]>
Commit | Line | Data |
---|---|---|
b49e97c9 | 1 | /* MIPS-specific support for ELF |
a2c58332 | 2 | Copyright (C) 1993-2022 Free Software Foundation, Inc. |
b49e97c9 TS |
3 | |
4 | Most of the information added by Ian Lance Taylor, Cygnus Support, | |
5 | <ian@cygnus.com>. | |
6 | N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC. | |
7 | <mark@codesourcery.com> | |
8 | Traditional MIPS targets support added by Koundinya.K, Dansk Data | |
9 | Elektronik & Operations Research Group. <kk@ddeorg.soft.net> | |
10 | ||
ae9a127f | 11 | This file is part of BFD, the Binary File Descriptor library. |
b49e97c9 | 12 | |
ae9a127f NC |
13 | This program is free software; you can redistribute it and/or modify |
14 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 15 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 16 | (at your option) any later version. |
b49e97c9 | 17 | |
ae9a127f NC |
18 | This program is distributed in the hope that it will be useful, |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
b49e97c9 | 22 | |
ae9a127f NC |
23 | You should have received a copy of the GNU General Public License |
24 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
25 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
26 | MA 02110-1301, USA. */ | |
27 | ||
b49e97c9 TS |
28 | |
29 | /* This file handles functionality common to the different MIPS ABI's. */ | |
30 | ||
b49e97c9 | 31 | #include "sysdep.h" |
3db64b00 | 32 | #include "bfd.h" |
b49e97c9 | 33 | #include "libbfd.h" |
64543e1a | 34 | #include "libiberty.h" |
b49e97c9 | 35 | #include "elf-bfd.h" |
0ba9378a | 36 | #include "ecoff-bfd.h" |
b49e97c9 TS |
37 | #include "elfxx-mips.h" |
38 | #include "elf/mips.h" | |
0a44bf69 | 39 | #include "elf-vxworks.h" |
2f0c68f2 | 40 | #include "dwarf2.h" |
b49e97c9 TS |
41 | |
42 | /* Get the ECOFF swapping routines. */ | |
43 | #include "coff/sym.h" | |
44 | #include "coff/symconst.h" | |
45 | #include "coff/ecoff.h" | |
46 | #include "coff/mips.h" | |
47 | ||
b15e6682 AO |
48 | #include "hashtab.h" |
49 | ||
9ab066b4 RS |
50 | /* Types of TLS GOT entry. */ |
51 | enum mips_got_tls_type { | |
52 | GOT_TLS_NONE, | |
53 | GOT_TLS_GD, | |
54 | GOT_TLS_LDM, | |
55 | GOT_TLS_IE | |
56 | }; | |
57 | ||
ead49a57 | 58 | /* This structure is used to hold information about one GOT entry. |
3dff0dd1 RS |
59 | There are four types of entry: |
60 | ||
61 | (1) an absolute address | |
62 | requires: abfd == NULL | |
63 | fields: d.address | |
64 | ||
65 | (2) a SYMBOL + OFFSET address, where SYMBOL is local to an input bfd | |
66 | requires: abfd != NULL, symndx >= 0, tls_type != GOT_TLS_LDM | |
67 | fields: abfd, symndx, d.addend, tls_type | |
68 | ||
69 | (3) a SYMBOL address, where SYMBOL is not local to an input bfd | |
70 | requires: abfd != NULL, symndx == -1 | |
71 | fields: d.h, tls_type | |
72 | ||
73 | (4) a TLS LDM slot | |
74 | requires: abfd != NULL, symndx == 0, tls_type == GOT_TLS_LDM | |
75 | fields: none; there's only one of these per GOT. */ | |
b15e6682 AO |
76 | struct mips_got_entry |
77 | { | |
3dff0dd1 | 78 | /* One input bfd that needs the GOT entry. */ |
b15e6682 | 79 | bfd *abfd; |
f4416af6 AO |
80 | /* The index of the symbol, as stored in the relocation r_info, if |
81 | we have a local symbol; -1 otherwise. */ | |
82 | long symndx; | |
83 | union | |
84 | { | |
85 | /* If abfd == NULL, an address that must be stored in the got. */ | |
86 | bfd_vma address; | |
87 | /* If abfd != NULL && symndx != -1, the addend of the relocation | |
88 | that should be added to the symbol value. */ | |
89 | bfd_vma addend; | |
90 | /* If abfd != NULL && symndx == -1, the hash table entry | |
3dff0dd1 | 91 | corresponding to a symbol in the GOT. The symbol's entry |
020d7251 RS |
92 | is in the local area if h->global_got_area is GGA_NONE, |
93 | otherwise it is in the global area. */ | |
f4416af6 AO |
94 | struct mips_elf_link_hash_entry *h; |
95 | } d; | |
0f20cc35 | 96 | |
9ab066b4 RS |
97 | /* The TLS type of this GOT entry. An LDM GOT entry will be a local |
98 | symbol entry with r_symndx == 0. */ | |
0f20cc35 DJ |
99 | unsigned char tls_type; |
100 | ||
9ab066b4 RS |
101 | /* True if we have filled in the GOT contents for a TLS entry, |
102 | and created the associated relocations. */ | |
103 | unsigned char tls_initialized; | |
104 | ||
b15e6682 | 105 | /* The offset from the beginning of the .got section to the entry |
f4416af6 AO |
106 | corresponding to this symbol+addend. If it's a global symbol |
107 | whose offset is yet to be decided, it's going to be -1. */ | |
108 | long gotidx; | |
b15e6682 AO |
109 | }; |
110 | ||
13db6b44 RS |
111 | /* This structure represents a GOT page reference from an input bfd. |
112 | Each instance represents a symbol + ADDEND, where the representation | |
113 | of the symbol depends on whether it is local to the input bfd. | |
114 | If it is, then SYMNDX >= 0, and the symbol has index SYMNDX in U.ABFD. | |
115 | Otherwise, SYMNDX < 0 and U.H points to the symbol's hash table entry. | |
116 | ||
117 | Page references with SYMNDX >= 0 always become page references | |
118 | in the output. Page references with SYMNDX < 0 only become page | |
119 | references if the symbol binds locally; in other cases, the page | |
120 | reference decays to a global GOT reference. */ | |
121 | struct mips_got_page_ref | |
122 | { | |
123 | long symndx; | |
124 | union | |
125 | { | |
126 | struct mips_elf_link_hash_entry *h; | |
127 | bfd *abfd; | |
128 | } u; | |
129 | bfd_vma addend; | |
130 | }; | |
131 | ||
c224138d RS |
132 | /* This structure describes a range of addends: [MIN_ADDEND, MAX_ADDEND]. |
133 | The structures form a non-overlapping list that is sorted by increasing | |
134 | MIN_ADDEND. */ | |
135 | struct mips_got_page_range | |
136 | { | |
137 | struct mips_got_page_range *next; | |
138 | bfd_signed_vma min_addend; | |
139 | bfd_signed_vma max_addend; | |
140 | }; | |
141 | ||
142 | /* This structure describes the range of addends that are applied to page | |
13db6b44 | 143 | relocations against a given section. */ |
c224138d RS |
144 | struct mips_got_page_entry |
145 | { | |
13db6b44 RS |
146 | /* The section that these entries are based on. */ |
147 | asection *sec; | |
c224138d RS |
148 | /* The ranges for this page entry. */ |
149 | struct mips_got_page_range *ranges; | |
150 | /* The maximum number of page entries needed for RANGES. */ | |
151 | bfd_vma num_pages; | |
152 | }; | |
153 | ||
f0abc2a1 | 154 | /* This structure is used to hold .got information when linking. */ |
b49e97c9 TS |
155 | |
156 | struct mips_got_info | |
157 | { | |
b49e97c9 TS |
158 | /* The number of global .got entries. */ |
159 | unsigned int global_gotno; | |
23cc69b6 RS |
160 | /* The number of global .got entries that are in the GGA_RELOC_ONLY area. */ |
161 | unsigned int reloc_only_gotno; | |
0f20cc35 DJ |
162 | /* The number of .got slots used for TLS. */ |
163 | unsigned int tls_gotno; | |
164 | /* The first unused TLS .got entry. Used only during | |
165 | mips_elf_initialize_tls_index. */ | |
166 | unsigned int tls_assigned_gotno; | |
c224138d | 167 | /* The number of local .got entries, eventually including page entries. */ |
b49e97c9 | 168 | unsigned int local_gotno; |
c224138d RS |
169 | /* The maximum number of page entries needed. */ |
170 | unsigned int page_gotno; | |
ab361d49 RS |
171 | /* The number of relocations needed for the GOT entries. */ |
172 | unsigned int relocs; | |
cb22ccf4 KCY |
173 | /* The first unused local .got entry. */ |
174 | unsigned int assigned_low_gotno; | |
175 | /* The last unused local .got entry. */ | |
176 | unsigned int assigned_high_gotno; | |
b15e6682 AO |
177 | /* A hash table holding members of the got. */ |
178 | struct htab *got_entries; | |
13db6b44 RS |
179 | /* A hash table holding mips_got_page_ref structures. */ |
180 | struct htab *got_page_refs; | |
c224138d RS |
181 | /* A hash table of mips_got_page_entry structures. */ |
182 | struct htab *got_page_entries; | |
f4416af6 AO |
183 | /* In multi-got links, a pointer to the next got (err, rather, most |
184 | of the time, it points to the previous got). */ | |
185 | struct mips_got_info *next; | |
186 | }; | |
187 | ||
d7206569 | 188 | /* Structure passed when merging bfds' gots. */ |
f4416af6 AO |
189 | |
190 | struct mips_elf_got_per_bfd_arg | |
191 | { | |
f4416af6 AO |
192 | /* The output bfd. */ |
193 | bfd *obfd; | |
194 | /* The link information. */ | |
195 | struct bfd_link_info *info; | |
196 | /* A pointer to the primary got, i.e., the one that's going to get | |
197 | the implicit relocations from DT_MIPS_LOCAL_GOTNO and | |
198 | DT_MIPS_GOTSYM. */ | |
199 | struct mips_got_info *primary; | |
200 | /* A non-primary got we're trying to merge with other input bfd's | |
201 | gots. */ | |
202 | struct mips_got_info *current; | |
203 | /* The maximum number of got entries that can be addressed with a | |
204 | 16-bit offset. */ | |
205 | unsigned int max_count; | |
c224138d RS |
206 | /* The maximum number of page entries needed by each got. */ |
207 | unsigned int max_pages; | |
0f20cc35 DJ |
208 | /* The total number of global entries which will live in the |
209 | primary got and be automatically relocated. This includes | |
210 | those not referenced by the primary GOT but included in | |
211 | the "master" GOT. */ | |
212 | unsigned int global_count; | |
f4416af6 AO |
213 | }; |
214 | ||
ab361d49 RS |
215 | /* A structure used to pass information to htab_traverse callbacks |
216 | when laying out the GOT. */ | |
f4416af6 | 217 | |
ab361d49 | 218 | struct mips_elf_traverse_got_arg |
f4416af6 | 219 | { |
ab361d49 | 220 | struct bfd_link_info *info; |
f4416af6 AO |
221 | struct mips_got_info *g; |
222 | int value; | |
0f20cc35 DJ |
223 | }; |
224 | ||
f0abc2a1 AM |
225 | struct _mips_elf_section_data |
226 | { | |
227 | struct bfd_elf_section_data elf; | |
228 | union | |
229 | { | |
f0abc2a1 AM |
230 | bfd_byte *tdata; |
231 | } u; | |
232 | }; | |
233 | ||
234 | #define mips_elf_section_data(sec) \ | |
68bfbfcc | 235 | ((struct _mips_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 | 236 | |
d5eaccd7 RS |
237 | #define is_mips_elf(bfd) \ |
238 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
239 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 240 | && elf_object_id (bfd) == MIPS_ELF_DATA) |
d5eaccd7 | 241 | |
634835ae RS |
242 | /* The ABI says that every symbol used by dynamic relocations must have |
243 | a global GOT entry. Among other things, this provides the dynamic | |
244 | linker with a free, directly-indexed cache. The GOT can therefore | |
245 | contain symbols that are not referenced by GOT relocations themselves | |
246 | (in other words, it may have symbols that are not referenced by things | |
247 | like R_MIPS_GOT16 and R_MIPS_GOT_PAGE). | |
248 | ||
249 | GOT relocations are less likely to overflow if we put the associated | |
250 | GOT entries towards the beginning. We therefore divide the global | |
251 | GOT entries into two areas: "normal" and "reloc-only". Entries in | |
252 | the first area can be used for both dynamic relocations and GP-relative | |
253 | accesses, while those in the "reloc-only" area are for dynamic | |
254 | relocations only. | |
255 | ||
256 | These GGA_* ("Global GOT Area") values are organised so that lower | |
257 | values are more general than higher values. Also, non-GGA_NONE | |
258 | values are ordered by the position of the area in the GOT. */ | |
259 | #define GGA_NORMAL 0 | |
260 | #define GGA_RELOC_ONLY 1 | |
261 | #define GGA_NONE 2 | |
262 | ||
861fb55a DJ |
263 | /* Information about a non-PIC interface to a PIC function. There are |
264 | two ways of creating these interfaces. The first is to add: | |
265 | ||
266 | lui $25,%hi(func) | |
267 | addiu $25,$25,%lo(func) | |
268 | ||
269 | immediately before a PIC function "func". The second is to add: | |
270 | ||
271 | lui $25,%hi(func) | |
272 | j func | |
273 | addiu $25,$25,%lo(func) | |
274 | ||
275 | to a separate trampoline section. | |
276 | ||
277 | Stubs of the first kind go in a new section immediately before the | |
278 | target function. Stubs of the second kind go in a single section | |
279 | pointed to by the hash table's "strampoline" field. */ | |
280 | struct mips_elf_la25_stub { | |
281 | /* The generated section that contains this stub. */ | |
282 | asection *stub_section; | |
283 | ||
284 | /* The offset of the stub from the start of STUB_SECTION. */ | |
285 | bfd_vma offset; | |
286 | ||
287 | /* One symbol for the original function. Its location is available | |
288 | in H->root.root.u.def. */ | |
289 | struct mips_elf_link_hash_entry *h; | |
290 | }; | |
291 | ||
292 | /* Macros for populating a mips_elf_la25_stub. */ | |
293 | ||
294 | #define LA25_LUI(VAL) (0x3c190000 | (VAL)) /* lui t9,VAL */ | |
295 | #define LA25_J(VAL) (0x08000000 | (((VAL) >> 2) & 0x3ffffff)) /* j VAL */ | |
3734320d | 296 | #define LA25_BC(VAL) (0xc8000000 | (((VAL) >> 2) & 0x3ffffff)) /* bc VAL */ |
861fb55a | 297 | #define LA25_ADDIU(VAL) (0x27390000 | (VAL)) /* addiu t9,t9,VAL */ |
d21911ea MR |
298 | #define LA25_LUI_MICROMIPS(VAL) \ |
299 | (0x41b90000 | (VAL)) /* lui t9,VAL */ | |
300 | #define LA25_J_MICROMIPS(VAL) \ | |
301 | (0xd4000000 | (((VAL) >> 1) & 0x3ffffff)) /* j VAL */ | |
302 | #define LA25_ADDIU_MICROMIPS(VAL) \ | |
303 | (0x33390000 | (VAL)) /* addiu t9,t9,VAL */ | |
861fb55a | 304 | |
b49e97c9 TS |
305 | /* This structure is passed to mips_elf_sort_hash_table_f when sorting |
306 | the dynamic symbols. */ | |
307 | ||
308 | struct mips_elf_hash_sort_data | |
309 | { | |
310 | /* The symbol in the global GOT with the lowest dynamic symbol table | |
311 | index. */ | |
312 | struct elf_link_hash_entry *low; | |
0f20cc35 DJ |
313 | /* The least dynamic symbol table index corresponding to a non-TLS |
314 | symbol with a GOT entry. */ | |
55f8b9d2 | 315 | bfd_size_type min_got_dynindx; |
f4416af6 AO |
316 | /* The greatest dynamic symbol table index corresponding to a symbol |
317 | with a GOT entry that is not referenced (e.g., a dynamic symbol | |
9e4aeb93 | 318 | with dynamic relocations pointing to it from non-primary GOTs). */ |
55f8b9d2 | 319 | bfd_size_type max_unref_got_dynindx; |
e17b0c35 MR |
320 | /* The greatest dynamic symbol table index corresponding to a local |
321 | symbol. */ | |
322 | bfd_size_type max_local_dynindx; | |
323 | /* The greatest dynamic symbol table index corresponding to an external | |
b49e97c9 | 324 | symbol without a GOT entry. */ |
55f8b9d2 | 325 | bfd_size_type max_non_got_dynindx; |
f16a9783 MS |
326 | /* If non-NULL, output BFD for .MIPS.xhash finalization. */ |
327 | bfd *output_bfd; | |
328 | /* If non-NULL, pointer to contents of .MIPS.xhash for filling in | |
329 | real final dynindx. */ | |
330 | bfd_byte *mipsxhash; | |
b49e97c9 TS |
331 | }; |
332 | ||
1bbce132 MR |
333 | /* We make up to two PLT entries if needed, one for standard MIPS code |
334 | and one for compressed code, either a MIPS16 or microMIPS one. We | |
335 | keep a separate record of traditional lazy-binding stubs, for easier | |
336 | processing. */ | |
337 | ||
338 | struct plt_entry | |
339 | { | |
340 | /* Traditional SVR4 stub offset, or -1 if none. */ | |
341 | bfd_vma stub_offset; | |
342 | ||
343 | /* Standard PLT entry offset, or -1 if none. */ | |
344 | bfd_vma mips_offset; | |
345 | ||
346 | /* Compressed PLT entry offset, or -1 if none. */ | |
347 | bfd_vma comp_offset; | |
348 | ||
349 | /* The corresponding .got.plt index, or -1 if none. */ | |
350 | bfd_vma gotplt_index; | |
351 | ||
352 | /* Whether we need a standard PLT entry. */ | |
353 | unsigned int need_mips : 1; | |
354 | ||
355 | /* Whether we need a compressed PLT entry. */ | |
356 | unsigned int need_comp : 1; | |
357 | }; | |
358 | ||
b49e97c9 TS |
359 | /* The MIPS ELF linker needs additional information for each symbol in |
360 | the global hash table. */ | |
361 | ||
362 | struct mips_elf_link_hash_entry | |
363 | { | |
364 | struct elf_link_hash_entry root; | |
365 | ||
366 | /* External symbol information. */ | |
367 | EXTR esym; | |
368 | ||
861fb55a DJ |
369 | /* The la25 stub we have created for ths symbol, if any. */ |
370 | struct mips_elf_la25_stub *la25_stub; | |
371 | ||
b49e97c9 TS |
372 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against |
373 | this symbol. */ | |
374 | unsigned int possibly_dynamic_relocs; | |
375 | ||
b49e97c9 TS |
376 | /* If there is a stub that 32 bit functions should use to call this |
377 | 16 bit function, this points to the section containing the stub. */ | |
378 | asection *fn_stub; | |
379 | ||
b49e97c9 TS |
380 | /* If there is a stub that 16 bit functions should use to call this |
381 | 32 bit function, this points to the section containing the stub. */ | |
382 | asection *call_stub; | |
383 | ||
384 | /* This is like the call_stub field, but it is used if the function | |
385 | being called returns a floating point value. */ | |
386 | asection *call_fp_stub; | |
7c5fcef7 | 387 | |
f16a9783 MS |
388 | /* If non-zero, location in .MIPS.xhash to write real final dynindx. */ |
389 | bfd_vma mipsxhash_loc; | |
390 | ||
634835ae RS |
391 | /* The highest GGA_* value that satisfies all references to this symbol. */ |
392 | unsigned int global_got_area : 2; | |
393 | ||
6ccf4795 RS |
394 | /* True if all GOT relocations against this symbol are for calls. This is |
395 | a looser condition than no_fn_stub below, because there may be other | |
396 | non-call non-GOT relocations against the symbol. */ | |
397 | unsigned int got_only_for_calls : 1; | |
398 | ||
71782a75 RS |
399 | /* True if one of the relocations described by possibly_dynamic_relocs |
400 | is against a readonly section. */ | |
401 | unsigned int readonly_reloc : 1; | |
402 | ||
861fb55a DJ |
403 | /* True if there is a relocation against this symbol that must be |
404 | resolved by the static linker (in other words, if the relocation | |
405 | cannot possibly be made dynamic). */ | |
406 | unsigned int has_static_relocs : 1; | |
407 | ||
71782a75 RS |
408 | /* True if we must not create a .MIPS.stubs entry for this symbol. |
409 | This is set, for example, if there are relocations related to | |
410 | taking the function's address, i.e. any but R_MIPS_CALL*16 ones. | |
411 | See "MIPS ABI Supplement, 3rd Edition", p. 4-20. */ | |
412 | unsigned int no_fn_stub : 1; | |
413 | ||
414 | /* Whether we need the fn_stub; this is true if this symbol appears | |
415 | in any relocs other than a 16 bit call. */ | |
416 | unsigned int need_fn_stub : 1; | |
417 | ||
861fb55a DJ |
418 | /* True if this symbol is referenced by branch relocations from |
419 | any non-PIC input file. This is used to determine whether an | |
420 | la25 stub is required. */ | |
421 | unsigned int has_nonpic_branches : 1; | |
33bb52fb RS |
422 | |
423 | /* Does this symbol need a traditional MIPS lazy-binding stub | |
424 | (as opposed to a PLT entry)? */ | |
425 | unsigned int needs_lazy_stub : 1; | |
1bbce132 MR |
426 | |
427 | /* Does this symbol resolve to a PLT entry? */ | |
428 | unsigned int use_plt_entry : 1; | |
b49e97c9 TS |
429 | }; |
430 | ||
431 | /* MIPS ELF linker hash table. */ | |
432 | ||
433 | struct mips_elf_link_hash_table | |
434 | { | |
435 | struct elf_link_hash_table root; | |
861fb55a | 436 | |
b49e97c9 TS |
437 | /* The number of .rtproc entries. */ |
438 | bfd_size_type procedure_count; | |
861fb55a | 439 | |
b49e97c9 TS |
440 | /* The size of the .compact_rel section (if SGI_COMPAT). */ |
441 | bfd_size_type compact_rel_size; | |
861fb55a | 442 | |
e6aea42d MR |
443 | /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic entry |
444 | is set to the address of __rld_obj_head as in IRIX5 and IRIX6. */ | |
0a1b45a2 | 445 | bool use_rld_obj_head; |
861fb55a | 446 | |
b4082c70 DD |
447 | /* The __rld_map or __rld_obj_head symbol. */ |
448 | struct elf_link_hash_entry *rld_symbol; | |
861fb55a | 449 | |
b49e97c9 | 450 | /* This is set if we see any mips16 stub sections. */ |
0a1b45a2 | 451 | bool mips16_stubs_seen; |
861fb55a DJ |
452 | |
453 | /* True if we can generate copy relocs and PLTs. */ | |
0a1b45a2 | 454 | bool use_plts_and_copy_relocs; |
861fb55a | 455 | |
833794fc | 456 | /* True if we can only use 32-bit microMIPS instructions. */ |
0a1b45a2 | 457 | bool insn32; |
833794fc | 458 | |
8b10b0b3 | 459 | /* True if we suppress checks for invalid branches between ISA modes. */ |
0a1b45a2 | 460 | bool ignore_branch_isa; |
8b10b0b3 | 461 | |
3734320d | 462 | /* True if we are targetting R6 compact branches. */ |
0a1b45a2 | 463 | bool compact_branches; |
3734320d | 464 | |
0e53d9da | 465 | /* True if we already reported the small-data section overflow. */ |
0a1b45a2 | 466 | bool small_data_overflow_reported; |
861fb55a | 467 | |
47275900 | 468 | /* True if we use the special `__gnu_absolute_zero' symbol. */ |
0a1b45a2 | 469 | bool use_absolute_zero; |
47275900 MR |
470 | |
471 | /* True if we have been configured for a GNU target. */ | |
0a1b45a2 | 472 | bool gnu_target; |
47275900 | 473 | |
0a44bf69 RS |
474 | /* Shortcuts to some dynamic sections, or NULL if they are not |
475 | being used. */ | |
0a44bf69 | 476 | asection *srelplt2; |
4e41d0d7 | 477 | asection *sstubs; |
861fb55a | 478 | |
a8028dd0 RS |
479 | /* The master GOT information. */ |
480 | struct mips_got_info *got_info; | |
861fb55a | 481 | |
d222d210 RS |
482 | /* The global symbol in the GOT with the lowest index in the dynamic |
483 | symbol table. */ | |
484 | struct elf_link_hash_entry *global_gotsym; | |
485 | ||
861fb55a | 486 | /* The size of the PLT header in bytes. */ |
0a44bf69 | 487 | bfd_vma plt_header_size; |
861fb55a | 488 | |
1bbce132 MR |
489 | /* The size of a standard PLT entry in bytes. */ |
490 | bfd_vma plt_mips_entry_size; | |
491 | ||
492 | /* The size of a compressed PLT entry in bytes. */ | |
493 | bfd_vma plt_comp_entry_size; | |
494 | ||
495 | /* The offset of the next standard PLT entry to create. */ | |
496 | bfd_vma plt_mips_offset; | |
497 | ||
498 | /* The offset of the next compressed PLT entry to create. */ | |
499 | bfd_vma plt_comp_offset; | |
500 | ||
501 | /* The index of the next .got.plt entry to create. */ | |
502 | bfd_vma plt_got_index; | |
861fb55a | 503 | |
33bb52fb RS |
504 | /* The number of functions that need a lazy-binding stub. */ |
505 | bfd_vma lazy_stub_count; | |
861fb55a | 506 | |
5108fc1b RS |
507 | /* The size of a function stub entry in bytes. */ |
508 | bfd_vma function_stub_size; | |
861fb55a DJ |
509 | |
510 | /* The number of reserved entries at the beginning of the GOT. */ | |
511 | unsigned int reserved_gotno; | |
512 | ||
513 | /* The section used for mips_elf_la25_stub trampolines. | |
514 | See the comment above that structure for details. */ | |
515 | asection *strampoline; | |
516 | ||
517 | /* A table of mips_elf_la25_stubs, indexed by (input_section, offset) | |
518 | pairs. */ | |
519 | htab_t la25_stubs; | |
520 | ||
521 | /* A function FN (NAME, IS, OS) that creates a new input section | |
522 | called NAME and links it to output section OS. If IS is nonnull, | |
523 | the new section should go immediately before it, otherwise it | |
524 | should go at the (current) beginning of OS. | |
525 | ||
526 | The function returns the new section on success, otherwise it | |
527 | returns null. */ | |
528 | asection *(*add_stub_section) (const char *, asection *, asection *); | |
13db6b44 | 529 | |
1bbce132 MR |
530 | /* Is the PLT header compressed? */ |
531 | unsigned int plt_header_is_comp : 1; | |
861fb55a DJ |
532 | }; |
533 | ||
4dfe6ac6 NC |
534 | /* Get the MIPS ELF linker hash table from a link_info structure. */ |
535 | ||
536 | #define mips_elf_hash_table(p) \ | |
0f55320b AM |
537 | ((is_elf_hash_table ((p)->hash) \ |
538 | && elf_hash_table_id (elf_hash_table (p)) == MIPS_ELF_DATA) \ | |
539 | ? (struct mips_elf_link_hash_table *) (p)->hash : NULL) | |
4dfe6ac6 | 540 | |
861fb55a | 541 | /* A structure used to communicate with htab_traverse callbacks. */ |
4dfe6ac6 NC |
542 | struct mips_htab_traverse_info |
543 | { | |
861fb55a DJ |
544 | /* The usual link-wide information. */ |
545 | struct bfd_link_info *info; | |
546 | bfd *output_bfd; | |
547 | ||
548 | /* Starts off FALSE and is set to TRUE if the link should be aborted. */ | |
0a1b45a2 | 549 | bool error; |
b49e97c9 TS |
550 | }; |
551 | ||
c799eddb AM |
552 | /* Used to store a REL high-part relocation such as R_MIPS_HI16 or |
553 | R_MIPS_GOT16. REL is the relocation, INPUT_SECTION is the section | |
554 | that contains the relocation field and DATA points to the start of | |
555 | INPUT_SECTION. */ | |
556 | ||
557 | struct mips_hi16 | |
558 | { | |
559 | struct mips_hi16 *next; | |
560 | bfd_byte *data; | |
561 | asection *input_section; | |
562 | arelent rel; | |
563 | }; | |
564 | ||
6ae68ba3 MR |
565 | /* MIPS ELF private object data. */ |
566 | ||
567 | struct mips_elf_obj_tdata | |
568 | { | |
569 | /* Generic ELF private object data. */ | |
570 | struct elf_obj_tdata root; | |
571 | ||
572 | /* Input BFD providing Tag_GNU_MIPS_ABI_FP attribute for output. */ | |
573 | bfd *abi_fp_bfd; | |
ee227692 | 574 | |
b60bf9be CF |
575 | /* Input BFD providing Tag_GNU_MIPS_ABI_MSA attribute for output. */ |
576 | bfd *abi_msa_bfd; | |
577 | ||
351cdf24 MF |
578 | /* The abiflags for this object. */ |
579 | Elf_Internal_ABIFlags_v0 abiflags; | |
0a1b45a2 | 580 | bool abiflags_valid; |
351cdf24 | 581 | |
ee227692 RS |
582 | /* The GOT requirements of input bfds. */ |
583 | struct mips_got_info *got; | |
698600e4 AM |
584 | |
585 | /* Used by _bfd_mips_elf_find_nearest_line. The structure could be | |
586 | included directly in this one, but there's no point to wasting | |
587 | the memory just for the infrequently called find_nearest_line. */ | |
588 | struct mips_elf_find_line *find_line_info; | |
589 | ||
590 | /* An array of stub sections indexed by symbol number. */ | |
591 | asection **local_stubs; | |
592 | asection **local_call_stubs; | |
593 | ||
594 | /* The Irix 5 support uses two virtual sections, which represent | |
595 | text/data symbols defined in dynamic objects. */ | |
596 | asymbol *elf_data_symbol; | |
597 | asymbol *elf_text_symbol; | |
598 | asection *elf_data_section; | |
599 | asection *elf_text_section; | |
c799eddb AM |
600 | |
601 | struct mips_hi16 *mips_hi16_list; | |
6ae68ba3 MR |
602 | }; |
603 | ||
604 | /* Get MIPS ELF private object data from BFD's tdata. */ | |
605 | ||
606 | #define mips_elf_tdata(bfd) \ | |
607 | ((struct mips_elf_obj_tdata *) (bfd)->tdata.any) | |
608 | ||
0f20cc35 DJ |
609 | #define TLS_RELOC_P(r_type) \ |
610 | (r_type == R_MIPS_TLS_DTPMOD32 \ | |
611 | || r_type == R_MIPS_TLS_DTPMOD64 \ | |
612 | || r_type == R_MIPS_TLS_DTPREL32 \ | |
613 | || r_type == R_MIPS_TLS_DTPREL64 \ | |
614 | || r_type == R_MIPS_TLS_GD \ | |
615 | || r_type == R_MIPS_TLS_LDM \ | |
616 | || r_type == R_MIPS_TLS_DTPREL_HI16 \ | |
617 | || r_type == R_MIPS_TLS_DTPREL_LO16 \ | |
618 | || r_type == R_MIPS_TLS_GOTTPREL \ | |
619 | || r_type == R_MIPS_TLS_TPREL32 \ | |
620 | || r_type == R_MIPS_TLS_TPREL64 \ | |
621 | || r_type == R_MIPS_TLS_TPREL_HI16 \ | |
df58fc94 | 622 | || r_type == R_MIPS_TLS_TPREL_LO16 \ |
d0f13682 CLT |
623 | || r_type == R_MIPS16_TLS_GD \ |
624 | || r_type == R_MIPS16_TLS_LDM \ | |
625 | || r_type == R_MIPS16_TLS_DTPREL_HI16 \ | |
626 | || r_type == R_MIPS16_TLS_DTPREL_LO16 \ | |
627 | || r_type == R_MIPS16_TLS_GOTTPREL \ | |
628 | || r_type == R_MIPS16_TLS_TPREL_HI16 \ | |
629 | || r_type == R_MIPS16_TLS_TPREL_LO16 \ | |
df58fc94 RS |
630 | || r_type == R_MICROMIPS_TLS_GD \ |
631 | || r_type == R_MICROMIPS_TLS_LDM \ | |
632 | || r_type == R_MICROMIPS_TLS_DTPREL_HI16 \ | |
633 | || r_type == R_MICROMIPS_TLS_DTPREL_LO16 \ | |
634 | || r_type == R_MICROMIPS_TLS_GOTTPREL \ | |
635 | || r_type == R_MICROMIPS_TLS_TPREL_HI16 \ | |
636 | || r_type == R_MICROMIPS_TLS_TPREL_LO16) | |
0f20cc35 | 637 | |
b49e97c9 TS |
638 | /* Structure used to pass information to mips_elf_output_extsym. */ |
639 | ||
640 | struct extsym_info | |
641 | { | |
9e4aeb93 RS |
642 | bfd *abfd; |
643 | struct bfd_link_info *info; | |
b49e97c9 TS |
644 | struct ecoff_debug_info *debug; |
645 | const struct ecoff_debug_swap *swap; | |
0a1b45a2 | 646 | bool failed; |
b49e97c9 TS |
647 | }; |
648 | ||
8dc1a139 | 649 | /* The names of the runtime procedure table symbols used on IRIX5. */ |
b49e97c9 TS |
650 | |
651 | static const char * const mips_elf_dynsym_rtproc_names[] = | |
652 | { | |
653 | "_procedure_table", | |
654 | "_procedure_string_table", | |
655 | "_procedure_table_size", | |
656 | NULL | |
657 | }; | |
658 | ||
659 | /* These structures are used to generate the .compact_rel section on | |
8dc1a139 | 660 | IRIX5. */ |
b49e97c9 TS |
661 | |
662 | typedef struct | |
663 | { | |
664 | unsigned long id1; /* Always one? */ | |
665 | unsigned long num; /* Number of compact relocation entries. */ | |
666 | unsigned long id2; /* Always two? */ | |
667 | unsigned long offset; /* The file offset of the first relocation. */ | |
668 | unsigned long reserved0; /* Zero? */ | |
669 | unsigned long reserved1; /* Zero? */ | |
670 | } Elf32_compact_rel; | |
671 | ||
672 | typedef struct | |
673 | { | |
674 | bfd_byte id1[4]; | |
675 | bfd_byte num[4]; | |
676 | bfd_byte id2[4]; | |
677 | bfd_byte offset[4]; | |
678 | bfd_byte reserved0[4]; | |
679 | bfd_byte reserved1[4]; | |
680 | } Elf32_External_compact_rel; | |
681 | ||
682 | typedef struct | |
683 | { | |
684 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
685 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
686 | unsigned int dist2to : 8; | |
687 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
688 | unsigned long konst; /* KONST field. See below. */ | |
689 | unsigned long vaddr; /* VADDR to be relocated. */ | |
690 | } Elf32_crinfo; | |
691 | ||
692 | typedef struct | |
693 | { | |
694 | unsigned int ctype : 1; /* 1: long 0: short format. See below. */ | |
695 | unsigned int rtype : 4; /* Relocation types. See below. */ | |
696 | unsigned int dist2to : 8; | |
697 | unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ | |
698 | unsigned long konst; /* KONST field. See below. */ | |
699 | } Elf32_crinfo2; | |
700 | ||
701 | typedef struct | |
702 | { | |
703 | bfd_byte info[4]; | |
704 | bfd_byte konst[4]; | |
705 | bfd_byte vaddr[4]; | |
706 | } Elf32_External_crinfo; | |
707 | ||
708 | typedef struct | |
709 | { | |
710 | bfd_byte info[4]; | |
711 | bfd_byte konst[4]; | |
712 | } Elf32_External_crinfo2; | |
713 | ||
714 | /* These are the constants used to swap the bitfields in a crinfo. */ | |
715 | ||
227d539b | 716 | #define CRINFO_CTYPE (0x1U) |
b49e97c9 | 717 | #define CRINFO_CTYPE_SH (31) |
227d539b | 718 | #define CRINFO_RTYPE (0xfU) |
b49e97c9 | 719 | #define CRINFO_RTYPE_SH (27) |
227d539b | 720 | #define CRINFO_DIST2TO (0xffU) |
b49e97c9 | 721 | #define CRINFO_DIST2TO_SH (19) |
227d539b | 722 | #define CRINFO_RELVADDR (0x7ffffU) |
b49e97c9 TS |
723 | #define CRINFO_RELVADDR_SH (0) |
724 | ||
725 | /* A compact relocation info has long (3 words) or short (2 words) | |
726 | formats. A short format doesn't have VADDR field and relvaddr | |
727 | fields contains ((VADDR - vaddr of the previous entry) >> 2). */ | |
728 | #define CRF_MIPS_LONG 1 | |
729 | #define CRF_MIPS_SHORT 0 | |
730 | ||
731 | /* There are 4 types of compact relocation at least. The value KONST | |
732 | has different meaning for each type: | |
733 | ||
734 | (type) (konst) | |
735 | CT_MIPS_REL32 Address in data | |
736 | CT_MIPS_WORD Address in word (XXX) | |
737 | CT_MIPS_GPHI_LO GP - vaddr | |
738 | CT_MIPS_JMPAD Address to jump | |
739 | */ | |
740 | ||
741 | #define CRT_MIPS_REL32 0xa | |
742 | #define CRT_MIPS_WORD 0xb | |
743 | #define CRT_MIPS_GPHI_LO 0xc | |
744 | #define CRT_MIPS_JMPAD 0xd | |
745 | ||
746 | #define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) | |
747 | #define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) | |
748 | #define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) | |
749 | #define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) | |
750 | \f | |
751 | /* The structure of the runtime procedure descriptor created by the | |
752 | loader for use by the static exception system. */ | |
753 | ||
754 | typedef struct runtime_pdr { | |
ae9a127f NC |
755 | bfd_vma adr; /* Memory address of start of procedure. */ |
756 | long regmask; /* Save register mask. */ | |
757 | long regoffset; /* Save register offset. */ | |
758 | long fregmask; /* Save floating point register mask. */ | |
759 | long fregoffset; /* Save floating point register offset. */ | |
760 | long frameoffset; /* Frame size. */ | |
761 | short framereg; /* Frame pointer register. */ | |
762 | short pcreg; /* Offset or reg of return pc. */ | |
763 | long irpss; /* Index into the runtime string table. */ | |
b49e97c9 | 764 | long reserved; |
ae9a127f | 765 | struct exception_info *exception_info;/* Pointer to exception array. */ |
b49e97c9 TS |
766 | } RPDR, *pRPDR; |
767 | #define cbRPDR sizeof (RPDR) | |
768 | #define rpdNil ((pRPDR) 0) | |
769 | \f | |
b15e6682 | 770 | static struct mips_got_entry *mips_elf_create_local_got_entry |
a8028dd0 RS |
771 | (bfd *, struct bfd_link_info *, bfd *, bfd_vma, unsigned long, |
772 | struct mips_elf_link_hash_entry *, int); | |
0a1b45a2 | 773 | static bool mips_elf_sort_hash_table_f |
9719ad41 | 774 | (struct mips_elf_link_hash_entry *, void *); |
9719ad41 RS |
775 | static bfd_vma mips_elf_high |
776 | (bfd_vma); | |
0a1b45a2 | 777 | static bool mips_elf_create_dynamic_relocation |
9719ad41 RS |
778 | (bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
779 | struct mips_elf_link_hash_entry *, asection *, bfd_vma, | |
780 | bfd_vma *, asection *); | |
f4416af6 | 781 | static bfd_vma mips_elf_adjust_gp |
9719ad41 | 782 | (bfd *, struct mips_got_info *, bfd *); |
f4416af6 | 783 | |
b49e97c9 TS |
784 | /* This will be used when we sort the dynamic relocation records. */ |
785 | static bfd *reldyn_sorting_bfd; | |
786 | ||
6d30f5b2 NC |
787 | /* True if ABFD is for CPUs with load interlocking that include |
788 | non-MIPS1 CPUs and R3900. */ | |
789 | #define LOAD_INTERLOCKS_P(abfd) \ | |
790 | ( ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) != E_MIPS_ARCH_1) \ | |
791 | || ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_3900)) | |
792 | ||
cd8d5a82 CF |
793 | /* True if ABFD is for CPUs that are faster if JAL is converted to BAL. |
794 | This should be safe for all architectures. We enable this predicate | |
795 | for RM9000 for now. */ | |
796 | #define JAL_TO_BAL_P(abfd) \ | |
797 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == E_MIPS_MACH_9000) | |
798 | ||
799 | /* True if ABFD is for CPUs that are faster if JALR is converted to BAL. | |
800 | This should be safe for all architectures. We enable this predicate for | |
801 | all CPUs. */ | |
802 | #define JALR_TO_BAL_P(abfd) 1 | |
803 | ||
38a7df63 CF |
804 | /* True if ABFD is for CPUs that are faster if JR is converted to B. |
805 | This should be safe for all architectures. We enable this predicate for | |
806 | all CPUs. */ | |
807 | #define JR_TO_B_P(abfd) 1 | |
808 | ||
861fb55a DJ |
809 | /* True if ABFD is a PIC object. */ |
810 | #define PIC_OBJECT_P(abfd) \ | |
811 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) != 0) | |
812 | ||
351cdf24 MF |
813 | /* Nonzero if ABFD is using the O32 ABI. */ |
814 | #define ABI_O32_P(abfd) \ | |
815 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
816 | ||
b49e97c9 | 817 | /* Nonzero if ABFD is using the N32 ABI. */ |
b49e97c9 TS |
818 | #define ABI_N32_P(abfd) \ |
819 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) | |
820 | ||
4a14403c | 821 | /* Nonzero if ABFD is using the N64 ABI. */ |
b49e97c9 | 822 | #define ABI_64_P(abfd) \ |
141ff970 | 823 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) |
b49e97c9 | 824 | |
4a14403c TS |
825 | /* Nonzero if ABFD is using NewABI conventions. */ |
826 | #define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd)) | |
827 | ||
e8faf7d1 MR |
828 | /* Nonzero if ABFD has microMIPS code. */ |
829 | #define MICROMIPS_P(abfd) \ | |
830 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) != 0) | |
831 | ||
7361da2c AB |
832 | /* Nonzero if ABFD is MIPS R6. */ |
833 | #define MIPSR6_P(abfd) \ | |
834 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6 \ | |
835 | || (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R6) | |
836 | ||
4a14403c | 837 | /* The IRIX compatibility level we are striving for. */ |
b49e97c9 TS |
838 | #define IRIX_COMPAT(abfd) \ |
839 | (get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd)) | |
840 | ||
b49e97c9 TS |
841 | /* Whether we are trying to be compatible with IRIX at all. */ |
842 | #define SGI_COMPAT(abfd) \ | |
843 | (IRIX_COMPAT (abfd) != ict_none) | |
844 | ||
845 | /* The name of the options section. */ | |
846 | #define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \ | |
d80dcc6a | 847 | (NEWABI_P (abfd) ? ".MIPS.options" : ".options") |
b49e97c9 | 848 | |
cc2e31b9 RS |
849 | /* True if NAME is the recognized name of any SHT_MIPS_OPTIONS section. |
850 | Some IRIX system files do not use MIPS_ELF_OPTIONS_SECTION_NAME. */ | |
851 | #define MIPS_ELF_OPTIONS_SECTION_NAME_P(NAME) \ | |
852 | (strcmp (NAME, ".MIPS.options") == 0 || strcmp (NAME, ".options") == 0) | |
853 | ||
351cdf24 MF |
854 | /* True if NAME is the recognized name of any SHT_MIPS_ABIFLAGS section. */ |
855 | #define MIPS_ELF_ABIFLAGS_SECTION_NAME_P(NAME) \ | |
856 | (strcmp (NAME, ".MIPS.abiflags") == 0) | |
857 | ||
943284cc DJ |
858 | /* Whether the section is readonly. */ |
859 | #define MIPS_ELF_READONLY_SECTION(sec) \ | |
860 | ((sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) \ | |
861 | == (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) | |
862 | ||
b49e97c9 | 863 | /* The name of the stub section. */ |
ca07892d | 864 | #define MIPS_ELF_STUB_SECTION_NAME(abfd) ".MIPS.stubs" |
b49e97c9 TS |
865 | |
866 | /* The size of an external REL relocation. */ | |
867 | #define MIPS_ELF_REL_SIZE(abfd) \ | |
868 | (get_elf_backend_data (abfd)->s->sizeof_rel) | |
869 | ||
0a44bf69 RS |
870 | /* The size of an external RELA relocation. */ |
871 | #define MIPS_ELF_RELA_SIZE(abfd) \ | |
872 | (get_elf_backend_data (abfd)->s->sizeof_rela) | |
873 | ||
b49e97c9 TS |
874 | /* The size of an external dynamic table entry. */ |
875 | #define MIPS_ELF_DYN_SIZE(abfd) \ | |
876 | (get_elf_backend_data (abfd)->s->sizeof_dyn) | |
877 | ||
878 | /* The size of a GOT entry. */ | |
879 | #define MIPS_ELF_GOT_SIZE(abfd) \ | |
880 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
881 | ||
b4082c70 DD |
882 | /* The size of the .rld_map section. */ |
883 | #define MIPS_ELF_RLD_MAP_SIZE(abfd) \ | |
884 | (get_elf_backend_data (abfd)->s->arch_size / 8) | |
885 | ||
b49e97c9 TS |
886 | /* The size of a symbol-table entry. */ |
887 | #define MIPS_ELF_SYM_SIZE(abfd) \ | |
888 | (get_elf_backend_data (abfd)->s->sizeof_sym) | |
889 | ||
890 | /* The default alignment for sections, as a power of two. */ | |
891 | #define MIPS_ELF_LOG_FILE_ALIGN(abfd) \ | |
45d6a902 | 892 | (get_elf_backend_data (abfd)->s->log_file_align) |
b49e97c9 TS |
893 | |
894 | /* Get word-sized data. */ | |
895 | #define MIPS_ELF_GET_WORD(abfd, ptr) \ | |
896 | (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr)) | |
897 | ||
898 | /* Put out word-sized data. */ | |
899 | #define MIPS_ELF_PUT_WORD(abfd, val, ptr) \ | |
07d6d2b8 AM |
900 | (ABI_64_P (abfd) \ |
901 | ? bfd_put_64 (abfd, val, ptr) \ | |
b49e97c9 TS |
902 | : bfd_put_32 (abfd, val, ptr)) |
903 | ||
861fb55a DJ |
904 | /* The opcode for word-sized loads (LW or LD). */ |
905 | #define MIPS_ELF_LOAD_WORD(abfd) \ | |
906 | (ABI_64_P (abfd) ? 0xdc000000 : 0x8c000000) | |
907 | ||
b49e97c9 | 908 | /* Add a dynamic symbol table-entry. */ |
9719ad41 | 909 | #define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ |
5a580b3a | 910 | _bfd_elf_add_dynamic_entry (info, tag, val) |
b49e97c9 TS |
911 | |
912 | #define MIPS_ELF_RTYPE_TO_HOWTO(abfd, rtype, rela) \ | |
0aa13fee | 913 | (get_elf_backend_data (abfd)->elf_backend_mips_rtype_to_howto (abfd, rtype, rela)) |
b49e97c9 | 914 | |
0a44bf69 RS |
915 | /* The name of the dynamic relocation section. */ |
916 | #define MIPS_ELF_REL_DYN_NAME(INFO) \ | |
90c14f0c L |
917 | (mips_elf_hash_table (INFO)->root.target_os == is_vxworks \ |
918 | ? ".rela.dyn" : ".rel.dyn") | |
0a44bf69 | 919 | |
b49e97c9 TS |
920 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
921 | from smaller values. Start with zero, widen, *then* decrement. */ | |
922 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
c5ae1840 | 923 | #define MINUS_TWO (((bfd_vma)0) - 2) |
b49e97c9 | 924 | |
51e38d68 RS |
925 | /* The value to write into got[1] for SVR4 targets, to identify it is |
926 | a GNU object. The dynamic linker can then use got[1] to store the | |
927 | module pointer. */ | |
928 | #define MIPS_ELF_GNU_GOT1_MASK(abfd) \ | |
929 | ((bfd_vma) 1 << (ABI_64_P (abfd) ? 63 : 31)) | |
930 | ||
f4416af6 | 931 | /* The offset of $gp from the beginning of the .got section. */ |
0a44bf69 | 932 | #define ELF_MIPS_GP_OFFSET(INFO) \ |
90c14f0c L |
933 | (mips_elf_hash_table (INFO)->root.target_os == is_vxworks \ |
934 | ? 0x0 : 0x7ff0) | |
f4416af6 AO |
935 | |
936 | /* The maximum size of the GOT for it to be addressable using 16-bit | |
937 | offsets from $gp. */ | |
0a44bf69 | 938 | #define MIPS_ELF_GOT_MAX_SIZE(INFO) (ELF_MIPS_GP_OFFSET (INFO) + 0x7fff) |
f4416af6 | 939 | |
6a691779 | 940 | /* Instructions which appear in a stub. */ |
3d6746ca DD |
941 | #define STUB_LW(abfd) \ |
942 | ((ABI_64_P (abfd) \ | |
943 | ? 0xdf998010 /* ld t9,0x8010(gp) */ \ | |
07d6d2b8 | 944 | : 0x8f998010)) /* lw t9,0x8010(gp) */ |
40fc1451 | 945 | #define STUB_MOVE 0x03e07825 /* or t7,ra,zero */ |
3d6746ca | 946 | #define STUB_LUI(VAL) (0x3c180000 + (VAL)) /* lui t8,VAL */ |
a18a2a34 | 947 | #define STUB_JALR 0x0320f809 /* jalr ra,t9 */ |
3734320d | 948 | #define STUB_JALRC 0xf8190000 /* jalrc ra,t9 */ |
5108fc1b RS |
949 | #define STUB_ORI(VAL) (0x37180000 + (VAL)) /* ori t8,t8,VAL */ |
950 | #define STUB_LI16U(VAL) (0x34180000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
3d6746ca DD |
951 | #define STUB_LI16S(abfd, VAL) \ |
952 | ((ABI_64_P (abfd) \ | |
953 | ? (0x64180000 + (VAL)) /* daddiu t8,zero,VAL sign extended */ \ | |
954 | : (0x24180000 + (VAL)))) /* addiu t8,zero,VAL sign extended */ | |
955 | ||
1bbce132 MR |
956 | /* Likewise for the microMIPS ASE. */ |
957 | #define STUB_LW_MICROMIPS(abfd) \ | |
958 | (ABI_64_P (abfd) \ | |
959 | ? 0xdf3c8010 /* ld t9,0x8010(gp) */ \ | |
960 | : 0xff3c8010) /* lw t9,0x8010(gp) */ | |
961 | #define STUB_MOVE_MICROMIPS 0x0dff /* move t7,ra */ | |
40fc1451 | 962 | #define STUB_MOVE32_MICROMIPS 0x001f7a90 /* or t7,ra,zero */ |
1bbce132 MR |
963 | #define STUB_LUI_MICROMIPS(VAL) \ |
964 | (0x41b80000 + (VAL)) /* lui t8,VAL */ | |
965 | #define STUB_JALR_MICROMIPS 0x45d9 /* jalr t9 */ | |
833794fc | 966 | #define STUB_JALR32_MICROMIPS 0x03f90f3c /* jalr ra,t9 */ |
1bbce132 MR |
967 | #define STUB_ORI_MICROMIPS(VAL) \ |
968 | (0x53180000 + (VAL)) /* ori t8,t8,VAL */ | |
969 | #define STUB_LI16U_MICROMIPS(VAL) \ | |
970 | (0x53000000 + (VAL)) /* ori t8,zero,VAL unsigned */ | |
971 | #define STUB_LI16S_MICROMIPS(abfd, VAL) \ | |
972 | (ABI_64_P (abfd) \ | |
973 | ? 0x5f000000 + (VAL) /* daddiu t8,zero,VAL sign extended */ \ | |
974 | : 0x33000000 + (VAL)) /* addiu t8,zero,VAL sign extended */ | |
975 | ||
5108fc1b RS |
976 | #define MIPS_FUNCTION_STUB_NORMAL_SIZE 16 |
977 | #define MIPS_FUNCTION_STUB_BIG_SIZE 20 | |
1bbce132 MR |
978 | #define MICROMIPS_FUNCTION_STUB_NORMAL_SIZE 12 |
979 | #define MICROMIPS_FUNCTION_STUB_BIG_SIZE 16 | |
833794fc MR |
980 | #define MICROMIPS_INSN32_FUNCTION_STUB_NORMAL_SIZE 16 |
981 | #define MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE 20 | |
b49e97c9 TS |
982 | |
983 | /* The name of the dynamic interpreter. This is put in the .interp | |
984 | section. */ | |
985 | ||
07d6d2b8 AM |
986 | #define ELF_DYNAMIC_INTERPRETER(abfd) \ |
987 | (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \ | |
988 | : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \ | |
b49e97c9 TS |
989 | : "/usr/lib/libc.so.1") |
990 | ||
991 | #ifdef BFD64 | |
ee6423ed AO |
992 | #define MNAME(bfd,pre,pos) \ |
993 | (ABI_64_P (bfd) ? CONCAT4 (pre,64,_,pos) : CONCAT4 (pre,32,_,pos)) | |
b49e97c9 TS |
994 | #define ELF_R_SYM(bfd, i) \ |
995 | (ABI_64_P (bfd) ? ELF64_R_SYM (i) : ELF32_R_SYM (i)) | |
996 | #define ELF_R_TYPE(bfd, i) \ | |
997 | (ABI_64_P (bfd) ? ELF64_MIPS_R_TYPE (i) : ELF32_R_TYPE (i)) | |
998 | #define ELF_R_INFO(bfd, s, t) \ | |
999 | (ABI_64_P (bfd) ? ELF64_R_INFO (s, t) : ELF32_R_INFO (s, t)) | |
1000 | #else | |
ee6423ed | 1001 | #define MNAME(bfd,pre,pos) CONCAT4 (pre,32,_,pos) |
b49e97c9 TS |
1002 | #define ELF_R_SYM(bfd, i) \ |
1003 | (ELF32_R_SYM (i)) | |
1004 | #define ELF_R_TYPE(bfd, i) \ | |
1005 | (ELF32_R_TYPE (i)) | |
1006 | #define ELF_R_INFO(bfd, s, t) \ | |
1007 | (ELF32_R_INFO (s, t)) | |
1008 | #endif | |
1009 | \f | |
1010 | /* The mips16 compiler uses a couple of special sections to handle | |
1011 | floating point arguments. | |
1012 | ||
1013 | Section names that look like .mips16.fn.FNNAME contain stubs that | |
1014 | copy floating point arguments from the fp regs to the gp regs and | |
1015 | then jump to FNNAME. If any 32 bit function calls FNNAME, the | |
1016 | call should be redirected to the stub instead. If no 32 bit | |
1017 | function calls FNNAME, the stub should be discarded. We need to | |
1018 | consider any reference to the function, not just a call, because | |
1019 | if the address of the function is taken we will need the stub, | |
1020 | since the address might be passed to a 32 bit function. | |
1021 | ||
1022 | Section names that look like .mips16.call.FNNAME contain stubs | |
1023 | that copy floating point arguments from the gp regs to the fp | |
1024 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, | |
1025 | then any 16 bit function that calls FNNAME should be redirected | |
1026 | to the stub instead. If FNNAME is not a 32 bit function, the | |
1027 | stub should be discarded. | |
1028 | ||
1029 | .mips16.call.fp.FNNAME sections are similar, but contain stubs | |
1030 | which call FNNAME and then copy the return value from the fp regs | |
1031 | to the gp regs. These stubs store the return value in $18 while | |
1032 | calling FNNAME; any function which might call one of these stubs | |
1033 | must arrange to save $18 around the call. (This case is not | |
1034 | needed for 32 bit functions that call 16 bit functions, because | |
1035 | 16 bit functions always return floating point values in both | |
1036 | $f0/$f1 and $2/$3.) | |
1037 | ||
1038 | Note that in all cases FNNAME might be defined statically. | |
1039 | Therefore, FNNAME is not used literally. Instead, the relocation | |
1040 | information will indicate which symbol the section is for. | |
1041 | ||
1042 | We record any stubs that we find in the symbol table. */ | |
1043 | ||
1044 | #define FN_STUB ".mips16.fn." | |
1045 | #define CALL_STUB ".mips16.call." | |
1046 | #define CALL_FP_STUB ".mips16.call.fp." | |
b9d58d71 | 1047 | |
08dedd66 ML |
1048 | #define FN_STUB_P(name) startswith (name, FN_STUB) |
1049 | #define CALL_STUB_P(name) startswith (name, CALL_STUB) | |
1050 | #define CALL_FP_STUB_P(name) startswith (name, CALL_FP_STUB) | |
b49e97c9 | 1051 | \f |
861fb55a | 1052 | /* The format of the first PLT entry in an O32 executable. */ |
6d30f5b2 NC |
1053 | static const bfd_vma mips_o32_exec_plt0_entry[] = |
1054 | { | |
861fb55a DJ |
1055 | 0x3c1c0000, /* lui $28, %hi(&GOTPLT[0]) */ |
1056 | 0x8f990000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
1057 | 0x279c0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
1058 | 0x031cc023, /* subu $24, $24, $28 */ | |
40fc1451 | 1059 | 0x03e07825, /* or t7, ra, zero */ |
861fb55a DJ |
1060 | 0x0018c082, /* srl $24, $24, 2 */ |
1061 | 0x0320f809, /* jalr $25 */ | |
1062 | 0x2718fffe /* subu $24, $24, 2 */ | |
1063 | }; | |
1064 | ||
3734320d MF |
1065 | /* The format of the first PLT entry in an O32 executable using compact |
1066 | jumps. */ | |
1067 | static const bfd_vma mipsr6_o32_exec_plt0_entry_compact[] = | |
1068 | { | |
1069 | 0x3c1c0000, /* lui $28, %hi(&GOTPLT[0]) */ | |
1070 | 0x8f990000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
1071 | 0x279c0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
1072 | 0x031cc023, /* subu $24, $24, $28 */ | |
1073 | 0x03e07821, /* move $15, $31 # 32-bit move (addu) */ | |
1074 | 0x0018c082, /* srl $24, $24, 2 */ | |
1075 | 0x2718fffe, /* subu $24, $24, 2 */ | |
1076 | 0xf8190000 /* jalrc $25 */ | |
1077 | }; | |
1078 | ||
861fb55a DJ |
1079 | /* The format of the first PLT entry in an N32 executable. Different |
1080 | because gp ($28) is not available; we use t2 ($14) instead. */ | |
6d30f5b2 NC |
1081 | static const bfd_vma mips_n32_exec_plt0_entry[] = |
1082 | { | |
861fb55a DJ |
1083 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
1084 | 0x8dd90000, /* lw $25, %lo(&GOTPLT[0])($14) */ | |
1085 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
1086 | 0x030ec023, /* subu $24, $24, $14 */ | |
40fc1451 | 1087 | 0x03e07825, /* or t7, ra, zero */ |
861fb55a DJ |
1088 | 0x0018c082, /* srl $24, $24, 2 */ |
1089 | 0x0320f809, /* jalr $25 */ | |
1090 | 0x2718fffe /* subu $24, $24, 2 */ | |
1091 | }; | |
1092 | ||
3734320d MF |
1093 | /* The format of the first PLT entry in an N32 executable using compact |
1094 | jumps. Different because gp ($28) is not available; we use t2 ($14) | |
1095 | instead. */ | |
1096 | static const bfd_vma mipsr6_n32_exec_plt0_entry_compact[] = | |
1097 | { | |
1098 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ | |
1099 | 0x8dd90000, /* lw $25, %lo(&GOTPLT[0])($14) */ | |
1100 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
1101 | 0x030ec023, /* subu $24, $24, $14 */ | |
1102 | 0x03e07821, /* move $15, $31 # 32-bit move (addu) */ | |
1103 | 0x0018c082, /* srl $24, $24, 2 */ | |
1104 | 0x2718fffe, /* subu $24, $24, 2 */ | |
1105 | 0xf8190000 /* jalrc $25 */ | |
1106 | }; | |
1107 | ||
861fb55a DJ |
1108 | /* The format of the first PLT entry in an N64 executable. Different |
1109 | from N32 because of the increased size of GOT entries. */ | |
6d30f5b2 NC |
1110 | static const bfd_vma mips_n64_exec_plt0_entry[] = |
1111 | { | |
861fb55a DJ |
1112 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ |
1113 | 0xddd90000, /* ld $25, %lo(&GOTPLT[0])($14) */ | |
1114 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
1115 | 0x030ec023, /* subu $24, $24, $14 */ | |
40fc1451 | 1116 | 0x03e07825, /* or t7, ra, zero */ |
861fb55a DJ |
1117 | 0x0018c0c2, /* srl $24, $24, 3 */ |
1118 | 0x0320f809, /* jalr $25 */ | |
1119 | 0x2718fffe /* subu $24, $24, 2 */ | |
1120 | }; | |
1121 | ||
3734320d MF |
1122 | /* The format of the first PLT entry in an N64 executable using compact |
1123 | jumps. Different from N32 because of the increased size of GOT | |
1124 | entries. */ | |
1125 | static const bfd_vma mipsr6_n64_exec_plt0_entry_compact[] = | |
1126 | { | |
1127 | 0x3c0e0000, /* lui $14, %hi(&GOTPLT[0]) */ | |
1128 | 0xddd90000, /* ld $25, %lo(&GOTPLT[0])($14) */ | |
1129 | 0x25ce0000, /* addiu $14, $14, %lo(&GOTPLT[0]) */ | |
1130 | 0x030ec023, /* subu $24, $24, $14 */ | |
1131 | 0x03e0782d, /* move $15, $31 # 64-bit move (daddu) */ | |
1132 | 0x0018c0c2, /* srl $24, $24, 3 */ | |
1133 | 0x2718fffe, /* subu $24, $24, 2 */ | |
1134 | 0xf8190000 /* jalrc $25 */ | |
1135 | }; | |
1136 | ||
1137 | ||
1bbce132 MR |
1138 | /* The format of the microMIPS first PLT entry in an O32 executable. |
1139 | We rely on v0 ($2) rather than t8 ($24) to contain the address | |
1140 | of the GOTPLT entry handled, so this stub may only be used when | |
1141 | all the subsequent PLT entries are microMIPS code too. | |
1142 | ||
1143 | The trailing NOP is for alignment and correct disassembly only. */ | |
1144 | static const bfd_vma micromips_o32_exec_plt0_entry[] = | |
1145 | { | |
1146 | 0x7980, 0x0000, /* addiupc $3, (&GOTPLT[0]) - . */ | |
1147 | 0xff23, 0x0000, /* lw $25, 0($3) */ | |
1148 | 0x0535, /* subu $2, $2, $3 */ | |
1149 | 0x2525, /* srl $2, $2, 2 */ | |
1150 | 0x3302, 0xfffe, /* subu $24, $2, 2 */ | |
1151 | 0x0dff, /* move $15, $31 */ | |
1152 | 0x45f9, /* jalrs $25 */ | |
1153 | 0x0f83, /* move $28, $3 */ | |
1154 | 0x0c00 /* nop */ | |
1155 | }; | |
1156 | ||
833794fc MR |
1157 | /* The format of the microMIPS first PLT entry in an O32 executable |
1158 | in the insn32 mode. */ | |
1159 | static const bfd_vma micromips_insn32_o32_exec_plt0_entry[] = | |
1160 | { | |
1161 | 0x41bc, 0x0000, /* lui $28, %hi(&GOTPLT[0]) */ | |
1162 | 0xff3c, 0x0000, /* lw $25, %lo(&GOTPLT[0])($28) */ | |
1163 | 0x339c, 0x0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */ | |
1164 | 0x0398, 0xc1d0, /* subu $24, $24, $28 */ | |
40fc1451 | 1165 | 0x001f, 0x7a90, /* or $15, $31, zero */ |
833794fc MR |
1166 | 0x0318, 0x1040, /* srl $24, $24, 2 */ |
1167 | 0x03f9, 0x0f3c, /* jalr $25 */ | |
1168 | 0x3318, 0xfffe /* subu $24, $24, 2 */ | |
1169 | }; | |
1170 | ||
1bbce132 | 1171 | /* The format of subsequent standard PLT entries. */ |
6d30f5b2 NC |
1172 | static const bfd_vma mips_exec_plt_entry[] = |
1173 | { | |
861fb55a DJ |
1174 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ |
1175 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
1176 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
1177 | 0x03200008 /* jr $25 */ | |
1178 | }; | |
1179 | ||
7361da2c AB |
1180 | static const bfd_vma mipsr6_exec_plt_entry[] = |
1181 | { | |
1182 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ | |
1183 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
1184 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
1185 | 0x03200009 /* jr $25 */ | |
1186 | }; | |
1187 | ||
3734320d MF |
1188 | static const bfd_vma mipsr6_exec_plt_entry_compact[] = |
1189 | { | |
1190 | 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */ | |
1191 | 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */ | |
1192 | 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */ | |
1193 | 0xd8190000 /* jic $25, 0 */ | |
1194 | }; | |
1195 | ||
1bbce132 MR |
1196 | /* The format of subsequent MIPS16 o32 PLT entries. We use v0 ($2) |
1197 | and v1 ($3) as temporaries because t8 ($24) and t9 ($25) are not | |
1198 | directly addressable. */ | |
1199 | static const bfd_vma mips16_o32_exec_plt_entry[] = | |
1200 | { | |
1201 | 0xb203, /* lw $2, 12($pc) */ | |
1202 | 0x9a60, /* lw $3, 0($2) */ | |
1203 | 0x651a, /* move $24, $2 */ | |
1204 | 0xeb00, /* jr $3 */ | |
1205 | 0x653b, /* move $25, $3 */ | |
1206 | 0x6500, /* nop */ | |
1207 | 0x0000, 0x0000 /* .word (.got.plt entry) */ | |
1208 | }; | |
1209 | ||
1210 | /* The format of subsequent microMIPS o32 PLT entries. We use v0 ($2) | |
1211 | as a temporary because t8 ($24) is not addressable with ADDIUPC. */ | |
1212 | static const bfd_vma micromips_o32_exec_plt_entry[] = | |
1213 | { | |
1214 | 0x7900, 0x0000, /* addiupc $2, (.got.plt entry) - . */ | |
1215 | 0xff22, 0x0000, /* lw $25, 0($2) */ | |
1216 | 0x4599, /* jr $25 */ | |
1217 | 0x0f02 /* move $24, $2 */ | |
1218 | }; | |
1219 | ||
833794fc MR |
1220 | /* The format of subsequent microMIPS o32 PLT entries in the insn32 mode. */ |
1221 | static const bfd_vma micromips_insn32_o32_exec_plt_entry[] = | |
1222 | { | |
1223 | 0x41af, 0x0000, /* lui $15, %hi(.got.plt entry) */ | |
1224 | 0xff2f, 0x0000, /* lw $25, %lo(.got.plt entry)($15) */ | |
1225 | 0x0019, 0x0f3c, /* jr $25 */ | |
1226 | 0x330f, 0x0000 /* addiu $24, $15, %lo(.got.plt entry) */ | |
1227 | }; | |
1228 | ||
0a44bf69 | 1229 | /* The format of the first PLT entry in a VxWorks executable. */ |
6d30f5b2 NC |
1230 | static const bfd_vma mips_vxworks_exec_plt0_entry[] = |
1231 | { | |
0a44bf69 RS |
1232 | 0x3c190000, /* lui t9, %hi(_GLOBAL_OFFSET_TABLE_) */ |
1233 | 0x27390000, /* addiu t9, t9, %lo(_GLOBAL_OFFSET_TABLE_) */ | |
1234 | 0x8f390008, /* lw t9, 8(t9) */ | |
1235 | 0x00000000, /* nop */ | |
1236 | 0x03200008, /* jr t9 */ | |
1237 | 0x00000000 /* nop */ | |
1238 | }; | |
1239 | ||
1240 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
1241 | static const bfd_vma mips_vxworks_exec_plt_entry[] = |
1242 | { | |
0a44bf69 RS |
1243 | 0x10000000, /* b .PLT_resolver */ |
1244 | 0x24180000, /* li t8, <pltindex> */ | |
1245 | 0x3c190000, /* lui t9, %hi(<.got.plt slot>) */ | |
1246 | 0x27390000, /* addiu t9, t9, %lo(<.got.plt slot>) */ | |
1247 | 0x8f390000, /* lw t9, 0(t9) */ | |
1248 | 0x00000000, /* nop */ | |
1249 | 0x03200008, /* jr t9 */ | |
1250 | 0x00000000 /* nop */ | |
1251 | }; | |
1252 | ||
1253 | /* The format of the first PLT entry in a VxWorks shared object. */ | |
6d30f5b2 NC |
1254 | static const bfd_vma mips_vxworks_shared_plt0_entry[] = |
1255 | { | |
0a44bf69 RS |
1256 | 0x8f990008, /* lw t9, 8(gp) */ |
1257 | 0x00000000, /* nop */ | |
1258 | 0x03200008, /* jr t9 */ | |
1259 | 0x00000000, /* nop */ | |
1260 | 0x00000000, /* nop */ | |
1261 | 0x00000000 /* nop */ | |
1262 | }; | |
1263 | ||
1264 | /* The format of subsequent PLT entries. */ | |
6d30f5b2 NC |
1265 | static const bfd_vma mips_vxworks_shared_plt_entry[] = |
1266 | { | |
0a44bf69 RS |
1267 | 0x10000000, /* b .PLT_resolver */ |
1268 | 0x24180000 /* li t8, <pltindex> */ | |
1269 | }; | |
1270 | \f | |
d21911ea MR |
1271 | /* microMIPS 32-bit opcode helper installer. */ |
1272 | ||
1273 | static void | |
1274 | bfd_put_micromips_32 (const bfd *abfd, bfd_vma opcode, bfd_byte *ptr) | |
1275 | { | |
1276 | bfd_put_16 (abfd, (opcode >> 16) & 0xffff, ptr); | |
07d6d2b8 | 1277 | bfd_put_16 (abfd, opcode & 0xffff, ptr + 2); |
d21911ea MR |
1278 | } |
1279 | ||
1280 | /* microMIPS 32-bit opcode helper retriever. */ | |
1281 | ||
1282 | static bfd_vma | |
1283 | bfd_get_micromips_32 (const bfd *abfd, const bfd_byte *ptr) | |
1284 | { | |
1285 | return (bfd_get_16 (abfd, ptr) << 16) | bfd_get_16 (abfd, ptr + 2); | |
1286 | } | |
1287 | \f | |
b49e97c9 TS |
1288 | /* Look up an entry in a MIPS ELF linker hash table. */ |
1289 | ||
1290 | #define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
1291 | ((struct mips_elf_link_hash_entry *) \ | |
1292 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
1293 | (copy), (follow))) | |
1294 | ||
1295 | /* Traverse a MIPS ELF linker hash table. */ | |
1296 | ||
1297 | #define mips_elf_link_hash_traverse(table, func, info) \ | |
1298 | (elf_link_hash_traverse \ | |
1299 | (&(table)->root, \ | |
0a1b45a2 | 1300 | (bool (*) (struct elf_link_hash_entry *, void *)) (func), \ |
b49e97c9 TS |
1301 | (info))) |
1302 | ||
0f20cc35 DJ |
1303 | /* Find the base offsets for thread-local storage in this object, |
1304 | for GD/LD and IE/LE respectively. */ | |
1305 | ||
1306 | #define TP_OFFSET 0x7000 | |
1307 | #define DTP_OFFSET 0x8000 | |
1308 | ||
1309 | static bfd_vma | |
1310 | dtprel_base (struct bfd_link_info *info) | |
1311 | { | |
1312 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1313 | if (elf_hash_table (info)->tls_sec == NULL) | |
1314 | return 0; | |
1315 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; | |
1316 | } | |
1317 | ||
1318 | static bfd_vma | |
1319 | tprel_base (struct bfd_link_info *info) | |
1320 | { | |
1321 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1322 | if (elf_hash_table (info)->tls_sec == NULL) | |
1323 | return 0; | |
1324 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; | |
1325 | } | |
1326 | ||
b49e97c9 TS |
1327 | /* Create an entry in a MIPS ELF linker hash table. */ |
1328 | ||
1329 | static struct bfd_hash_entry * | |
9719ad41 RS |
1330 | mips_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1331 | struct bfd_hash_table *table, const char *string) | |
b49e97c9 TS |
1332 | { |
1333 | struct mips_elf_link_hash_entry *ret = | |
1334 | (struct mips_elf_link_hash_entry *) entry; | |
1335 | ||
1336 | /* Allocate the structure if it has not already been allocated by a | |
1337 | subclass. */ | |
9719ad41 RS |
1338 | if (ret == NULL) |
1339 | ret = bfd_hash_allocate (table, sizeof (struct mips_elf_link_hash_entry)); | |
1340 | if (ret == NULL) | |
b49e97c9 TS |
1341 | return (struct bfd_hash_entry *) ret; |
1342 | ||
1343 | /* Call the allocation method of the superclass. */ | |
1344 | ret = ((struct mips_elf_link_hash_entry *) | |
1345 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1346 | table, string)); | |
9719ad41 | 1347 | if (ret != NULL) |
b49e97c9 TS |
1348 | { |
1349 | /* Set local fields. */ | |
1350 | memset (&ret->esym, 0, sizeof (EXTR)); | |
1351 | /* We use -2 as a marker to indicate that the information has | |
1352 | not been set. -1 means there is no associated ifd. */ | |
1353 | ret->esym.ifd = -2; | |
861fb55a | 1354 | ret->la25_stub = 0; |
b49e97c9 | 1355 | ret->possibly_dynamic_relocs = 0; |
b49e97c9 | 1356 | ret->fn_stub = NULL; |
b49e97c9 TS |
1357 | ret->call_stub = NULL; |
1358 | ret->call_fp_stub = NULL; | |
f16a9783 | 1359 | ret->mipsxhash_loc = 0; |
634835ae | 1360 | ret->global_got_area = GGA_NONE; |
0a1b45a2 AM |
1361 | ret->got_only_for_calls = true; |
1362 | ret->readonly_reloc = false; | |
1363 | ret->has_static_relocs = false; | |
1364 | ret->no_fn_stub = false; | |
1365 | ret->need_fn_stub = false; | |
1366 | ret->has_nonpic_branches = false; | |
1367 | ret->needs_lazy_stub = false; | |
1368 | ret->use_plt_entry = false; | |
b49e97c9 TS |
1369 | } |
1370 | ||
1371 | return (struct bfd_hash_entry *) ret; | |
1372 | } | |
f0abc2a1 | 1373 | |
6ae68ba3 MR |
1374 | /* Allocate MIPS ELF private object data. */ |
1375 | ||
0a1b45a2 | 1376 | bool |
6ae68ba3 MR |
1377 | _bfd_mips_elf_mkobject (bfd *abfd) |
1378 | { | |
1379 | return bfd_elf_allocate_object (abfd, sizeof (struct mips_elf_obj_tdata), | |
1380 | MIPS_ELF_DATA); | |
1381 | } | |
1382 | ||
c799eddb AM |
1383 | bool |
1384 | _bfd_mips_elf_close_and_cleanup (bfd *abfd) | |
1385 | { | |
1386 | struct mips_elf_obj_tdata *tdata = mips_elf_tdata (abfd); | |
1387 | if (tdata != NULL && bfd_get_format (abfd) == bfd_object) | |
1388 | { | |
1389 | BFD_ASSERT (tdata->root.object_id == MIPS_ELF_DATA); | |
1390 | while (tdata->mips_hi16_list != NULL) | |
1391 | { | |
1392 | struct mips_hi16 *hi = tdata->mips_hi16_list; | |
1393 | tdata->mips_hi16_list = hi->next; | |
1394 | free (hi); | |
1395 | } | |
1396 | } | |
1397 | return _bfd_elf_close_and_cleanup (abfd); | |
1398 | } | |
1399 | ||
0a1b45a2 | 1400 | bool |
9719ad41 | 1401 | _bfd_mips_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 1402 | { |
f592407e AM |
1403 | if (!sec->used_by_bfd) |
1404 | { | |
1405 | struct _mips_elf_section_data *sdata; | |
986f0783 | 1406 | size_t amt = sizeof (*sdata); |
f0abc2a1 | 1407 | |
f592407e AM |
1408 | sdata = bfd_zalloc (abfd, amt); |
1409 | if (sdata == NULL) | |
0a1b45a2 | 1410 | return false; |
f592407e AM |
1411 | sec->used_by_bfd = sdata; |
1412 | } | |
f0abc2a1 AM |
1413 | |
1414 | return _bfd_elf_new_section_hook (abfd, sec); | |
1415 | } | |
b49e97c9 TS |
1416 | \f |
1417 | /* Read ECOFF debugging information from a .mdebug section into a | |
1418 | ecoff_debug_info structure. */ | |
1419 | ||
0a1b45a2 | 1420 | bool |
9719ad41 RS |
1421 | _bfd_mips_elf_read_ecoff_info (bfd *abfd, asection *section, |
1422 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1423 | { |
1424 | HDRR *symhdr; | |
1425 | const struct ecoff_debug_swap *swap; | |
9719ad41 | 1426 | char *ext_hdr; |
b49e97c9 TS |
1427 | |
1428 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1429 | memset (debug, 0, sizeof (*debug)); | |
1430 | ||
9719ad41 | 1431 | ext_hdr = bfd_malloc (swap->external_hdr_size); |
b49e97c9 TS |
1432 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
1433 | goto error_return; | |
1434 | ||
9719ad41 | 1435 | if (! bfd_get_section_contents (abfd, section, ext_hdr, 0, |
82e51918 | 1436 | swap->external_hdr_size)) |
b49e97c9 TS |
1437 | goto error_return; |
1438 | ||
1439 | symhdr = &debug->symbolic_header; | |
1440 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
1441 | ||
1442 | /* The symbolic header contains absolute file offsets and sizes to | |
1443 | read. */ | |
1444 | #define READ(ptr, offset, count, size, type) \ | |
1f4361a7 | 1445 | do \ |
b49e97c9 | 1446 | { \ |
1f4361a7 AM |
1447 | size_t amt; \ |
1448 | debug->ptr = NULL; \ | |
1449 | if (symhdr->count == 0) \ | |
1450 | break; \ | |
1451 | if (_bfd_mul_overflow (size, symhdr->count, &amt)) \ | |
1452 | { \ | |
1453 | bfd_set_error (bfd_error_file_too_big); \ | |
1454 | goto error_return; \ | |
1455 | } \ | |
2bb3687b | 1456 | if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0) \ |
b49e97c9 | 1457 | goto error_return; \ |
2bb3687b AM |
1458 | debug->ptr = (type) _bfd_malloc_and_read (abfd, amt, amt); \ |
1459 | if (debug->ptr == NULL) \ | |
b49e97c9 | 1460 | goto error_return; \ |
1f4361a7 | 1461 | } while (0) |
b49e97c9 TS |
1462 | |
1463 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
9719ad41 RS |
1464 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); |
1465 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); | |
1466 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); | |
1467 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); | |
b49e97c9 TS |
1468 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
1469 | union aux_ext *); | |
1470 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1471 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
9719ad41 RS |
1472 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); |
1473 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); | |
1474 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); | |
b49e97c9 TS |
1475 | #undef READ |
1476 | ||
1477 | debug->fdr = NULL; | |
b49e97c9 | 1478 | |
0a1b45a2 | 1479 | return true; |
b49e97c9 TS |
1480 | |
1481 | error_return: | |
c9594989 AM |
1482 | free (ext_hdr); |
1483 | free (debug->line); | |
1484 | free (debug->external_dnr); | |
1485 | free (debug->external_pdr); | |
1486 | free (debug->external_sym); | |
1487 | free (debug->external_opt); | |
1488 | free (debug->external_aux); | |
1489 | free (debug->ss); | |
1490 | free (debug->ssext); | |
1491 | free (debug->external_fdr); | |
1492 | free (debug->external_rfd); | |
1493 | free (debug->external_ext); | |
0a1b45a2 | 1494 | return false; |
b49e97c9 TS |
1495 | } |
1496 | \f | |
1497 | /* Swap RPDR (runtime procedure table entry) for output. */ | |
1498 | ||
1499 | static void | |
9719ad41 | 1500 | ecoff_swap_rpdr_out (bfd *abfd, const RPDR *in, struct rpdr_ext *ex) |
b49e97c9 TS |
1501 | { |
1502 | H_PUT_S32 (abfd, in->adr, ex->p_adr); | |
1503 | H_PUT_32 (abfd, in->regmask, ex->p_regmask); | |
1504 | H_PUT_32 (abfd, in->regoffset, ex->p_regoffset); | |
1505 | H_PUT_32 (abfd, in->fregmask, ex->p_fregmask); | |
1506 | H_PUT_32 (abfd, in->fregoffset, ex->p_fregoffset); | |
1507 | H_PUT_32 (abfd, in->frameoffset, ex->p_frameoffset); | |
1508 | ||
1509 | H_PUT_16 (abfd, in->framereg, ex->p_framereg); | |
1510 | H_PUT_16 (abfd, in->pcreg, ex->p_pcreg); | |
1511 | ||
1512 | H_PUT_32 (abfd, in->irpss, ex->p_irpss); | |
b49e97c9 TS |
1513 | } |
1514 | ||
1515 | /* Create a runtime procedure table from the .mdebug section. */ | |
1516 | ||
0a1b45a2 | 1517 | static bool |
9719ad41 RS |
1518 | mips_elf_create_procedure_table (void *handle, bfd *abfd, |
1519 | struct bfd_link_info *info, asection *s, | |
1520 | struct ecoff_debug_info *debug) | |
b49e97c9 TS |
1521 | { |
1522 | const struct ecoff_debug_swap *swap; | |
1523 | HDRR *hdr = &debug->symbolic_header; | |
1524 | RPDR *rpdr, *rp; | |
1525 | struct rpdr_ext *erp; | |
9719ad41 | 1526 | void *rtproc; |
b49e97c9 TS |
1527 | struct pdr_ext *epdr; |
1528 | struct sym_ext *esym; | |
1529 | char *ss, **sv; | |
1530 | char *str; | |
1531 | bfd_size_type size; | |
1532 | bfd_size_type count; | |
1533 | unsigned long sindex; | |
1534 | unsigned long i; | |
1535 | PDR pdr; | |
1536 | SYMR sym; | |
1537 | const char *no_name_func = _("static procedure (no name)"); | |
1538 | ||
1539 | epdr = NULL; | |
1540 | rpdr = NULL; | |
1541 | esym = NULL; | |
1542 | ss = NULL; | |
1543 | sv = NULL; | |
1544 | ||
1545 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1546 | ||
1547 | sindex = strlen (no_name_func) + 1; | |
1548 | count = hdr->ipdMax; | |
1549 | if (count > 0) | |
1550 | { | |
1551 | size = swap->external_pdr_size; | |
1552 | ||
9719ad41 | 1553 | epdr = bfd_malloc (size * count); |
b49e97c9 TS |
1554 | if (epdr == NULL) |
1555 | goto error_return; | |
1556 | ||
9719ad41 | 1557 | if (! _bfd_ecoff_get_accumulated_pdr (handle, (bfd_byte *) epdr)) |
b49e97c9 TS |
1558 | goto error_return; |
1559 | ||
1560 | size = sizeof (RPDR); | |
9719ad41 | 1561 | rp = rpdr = bfd_malloc (size * count); |
b49e97c9 TS |
1562 | if (rpdr == NULL) |
1563 | goto error_return; | |
1564 | ||
1565 | size = sizeof (char *); | |
9719ad41 | 1566 | sv = bfd_malloc (size * count); |
b49e97c9 TS |
1567 | if (sv == NULL) |
1568 | goto error_return; | |
1569 | ||
1570 | count = hdr->isymMax; | |
1571 | size = swap->external_sym_size; | |
9719ad41 | 1572 | esym = bfd_malloc (size * count); |
b49e97c9 TS |
1573 | if (esym == NULL) |
1574 | goto error_return; | |
1575 | ||
9719ad41 | 1576 | if (! _bfd_ecoff_get_accumulated_sym (handle, (bfd_byte *) esym)) |
b49e97c9 TS |
1577 | goto error_return; |
1578 | ||
1579 | count = hdr->issMax; | |
9719ad41 | 1580 | ss = bfd_malloc (count); |
b49e97c9 TS |
1581 | if (ss == NULL) |
1582 | goto error_return; | |
f075ee0c | 1583 | if (! _bfd_ecoff_get_accumulated_ss (handle, (bfd_byte *) ss)) |
b49e97c9 TS |
1584 | goto error_return; |
1585 | ||
1586 | count = hdr->ipdMax; | |
1587 | for (i = 0; i < (unsigned long) count; i++, rp++) | |
1588 | { | |
9719ad41 RS |
1589 | (*swap->swap_pdr_in) (abfd, epdr + i, &pdr); |
1590 | (*swap->swap_sym_in) (abfd, &esym[pdr.isym], &sym); | |
b49e97c9 TS |
1591 | rp->adr = sym.value; |
1592 | rp->regmask = pdr.regmask; | |
1593 | rp->regoffset = pdr.regoffset; | |
1594 | rp->fregmask = pdr.fregmask; | |
1595 | rp->fregoffset = pdr.fregoffset; | |
1596 | rp->frameoffset = pdr.frameoffset; | |
1597 | rp->framereg = pdr.framereg; | |
1598 | rp->pcreg = pdr.pcreg; | |
1599 | rp->irpss = sindex; | |
1600 | sv[i] = ss + sym.iss; | |
1601 | sindex += strlen (sv[i]) + 1; | |
1602 | } | |
1603 | } | |
1604 | ||
1605 | size = sizeof (struct rpdr_ext) * (count + 2) + sindex; | |
1606 | size = BFD_ALIGN (size, 16); | |
9719ad41 | 1607 | rtproc = bfd_alloc (abfd, size); |
b49e97c9 TS |
1608 | if (rtproc == NULL) |
1609 | { | |
1610 | mips_elf_hash_table (info)->procedure_count = 0; | |
1611 | goto error_return; | |
1612 | } | |
1613 | ||
1614 | mips_elf_hash_table (info)->procedure_count = count + 2; | |
1615 | ||
9719ad41 | 1616 | erp = rtproc; |
b49e97c9 TS |
1617 | memset (erp, 0, sizeof (struct rpdr_ext)); |
1618 | erp++; | |
1619 | str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); | |
1620 | strcpy (str, no_name_func); | |
1621 | str += strlen (no_name_func) + 1; | |
1622 | for (i = 0; i < count; i++) | |
1623 | { | |
1624 | ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); | |
1625 | strcpy (str, sv[i]); | |
1626 | str += strlen (sv[i]) + 1; | |
1627 | } | |
1628 | H_PUT_S32 (abfd, -1, (erp + count)->p_adr); | |
1629 | ||
1630 | /* Set the size and contents of .rtproc section. */ | |
eea6121a | 1631 | s->size = size; |
9719ad41 | 1632 | s->contents = rtproc; |
b49e97c9 TS |
1633 | |
1634 | /* Skip this section later on (I don't think this currently | |
1635 | matters, but someday it might). */ | |
8423293d | 1636 | s->map_head.link_order = NULL; |
b49e97c9 | 1637 | |
c9594989 AM |
1638 | free (epdr); |
1639 | free (rpdr); | |
1640 | free (esym); | |
1641 | free (ss); | |
1642 | free (sv); | |
0a1b45a2 | 1643 | return true; |
b49e97c9 TS |
1644 | |
1645 | error_return: | |
c9594989 AM |
1646 | free (epdr); |
1647 | free (rpdr); | |
1648 | free (esym); | |
1649 | free (ss); | |
1650 | free (sv); | |
0a1b45a2 | 1651 | return false; |
b49e97c9 | 1652 | } |
738e5348 | 1653 | \f |
861fb55a DJ |
1654 | /* We're going to create a stub for H. Create a symbol for the stub's |
1655 | value and size, to help make the disassembly easier to read. */ | |
1656 | ||
0a1b45a2 | 1657 | static bool |
861fb55a DJ |
1658 | mips_elf_create_stub_symbol (struct bfd_link_info *info, |
1659 | struct mips_elf_link_hash_entry *h, | |
1660 | const char *prefix, asection *s, bfd_vma value, | |
1661 | bfd_vma size) | |
1662 | { | |
0a1b45a2 | 1663 | bool micromips_p = ELF_ST_IS_MICROMIPS (h->root.other); |
861fb55a DJ |
1664 | struct bfd_link_hash_entry *bh; |
1665 | struct elf_link_hash_entry *elfh; | |
e1fa0163 | 1666 | char *name; |
0a1b45a2 | 1667 | bool res; |
861fb55a | 1668 | |
a848a227 | 1669 | if (micromips_p) |
df58fc94 RS |
1670 | value |= 1; |
1671 | ||
861fb55a | 1672 | /* Create a new symbol. */ |
e1fa0163 | 1673 | name = concat (prefix, h->root.root.root.string, NULL); |
861fb55a | 1674 | bh = NULL; |
e1fa0163 NC |
1675 | res = _bfd_generic_link_add_one_symbol (info, s->owner, name, |
1676 | BSF_LOCAL, s, value, NULL, | |
0a1b45a2 | 1677 | true, false, &bh); |
e1fa0163 NC |
1678 | free (name); |
1679 | if (! res) | |
0a1b45a2 | 1680 | return false; |
861fb55a DJ |
1681 | |
1682 | /* Make it a local function. */ | |
1683 | elfh = (struct elf_link_hash_entry *) bh; | |
1684 | elfh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
1685 | elfh->size = size; | |
1686 | elfh->forced_local = 1; | |
a848a227 MR |
1687 | if (micromips_p) |
1688 | elfh->other = ELF_ST_SET_MICROMIPS (elfh->other); | |
0a1b45a2 | 1689 | return true; |
861fb55a DJ |
1690 | } |
1691 | ||
738e5348 RS |
1692 | /* We're about to redefine H. Create a symbol to represent H's |
1693 | current value and size, to help make the disassembly easier | |
1694 | to read. */ | |
1695 | ||
0a1b45a2 | 1696 | static bool |
738e5348 RS |
1697 | mips_elf_create_shadow_symbol (struct bfd_link_info *info, |
1698 | struct mips_elf_link_hash_entry *h, | |
1699 | const char *prefix) | |
1700 | { | |
1701 | struct bfd_link_hash_entry *bh; | |
1702 | struct elf_link_hash_entry *elfh; | |
e1fa0163 | 1703 | char *name; |
738e5348 RS |
1704 | asection *s; |
1705 | bfd_vma value; | |
0a1b45a2 | 1706 | bool res; |
738e5348 RS |
1707 | |
1708 | /* Read the symbol's value. */ | |
1709 | BFD_ASSERT (h->root.root.type == bfd_link_hash_defined | |
1710 | || h->root.root.type == bfd_link_hash_defweak); | |
1711 | s = h->root.root.u.def.section; | |
1712 | value = h->root.root.u.def.value; | |
1713 | ||
1714 | /* Create a new symbol. */ | |
e1fa0163 | 1715 | name = concat (prefix, h->root.root.root.string, NULL); |
738e5348 | 1716 | bh = NULL; |
e1fa0163 NC |
1717 | res = _bfd_generic_link_add_one_symbol (info, s->owner, name, |
1718 | BSF_LOCAL, s, value, NULL, | |
0a1b45a2 | 1719 | true, false, &bh); |
e1fa0163 NC |
1720 | free (name); |
1721 | if (! res) | |
0a1b45a2 | 1722 | return false; |
738e5348 RS |
1723 | |
1724 | /* Make it local and copy the other attributes from H. */ | |
1725 | elfh = (struct elf_link_hash_entry *) bh; | |
1726 | elfh->type = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (h->root.type)); | |
1727 | elfh->other = h->root.other; | |
1728 | elfh->size = h->root.size; | |
1729 | elfh->forced_local = 1; | |
0a1b45a2 | 1730 | return true; |
738e5348 RS |
1731 | } |
1732 | ||
1733 | /* Return TRUE if relocations in SECTION can refer directly to a MIPS16 | |
1734 | function rather than to a hard-float stub. */ | |
1735 | ||
0a1b45a2 | 1736 | static bool |
738e5348 RS |
1737 | section_allows_mips16_refs_p (asection *section) |
1738 | { | |
1739 | const char *name; | |
1740 | ||
fd361982 | 1741 | name = bfd_section_name (section); |
738e5348 RS |
1742 | return (FN_STUB_P (name) |
1743 | || CALL_STUB_P (name) | |
1744 | || CALL_FP_STUB_P (name) | |
1745 | || strcmp (name, ".pdr") == 0); | |
1746 | } | |
1747 | ||
1748 | /* [RELOCS, RELEND) are the relocations against SEC, which is a MIPS16 | |
1749 | stub section of some kind. Return the R_SYMNDX of the target | |
1750 | function, or 0 if we can't decide which function that is. */ | |
1751 | ||
1752 | static unsigned long | |
cb4437b8 MR |
1753 | mips16_stub_symndx (const struct elf_backend_data *bed, |
1754 | asection *sec ATTRIBUTE_UNUSED, | |
502e814e | 1755 | const Elf_Internal_Rela *relocs, |
738e5348 RS |
1756 | const Elf_Internal_Rela *relend) |
1757 | { | |
cb4437b8 | 1758 | int int_rels_per_ext_rel = bed->s->int_rels_per_ext_rel; |
738e5348 RS |
1759 | const Elf_Internal_Rela *rel; |
1760 | ||
cb4437b8 MR |
1761 | /* Trust the first R_MIPS_NONE relocation, if any, but not a subsequent |
1762 | one in a compound relocation. */ | |
1763 | for (rel = relocs; rel < relend; rel += int_rels_per_ext_rel) | |
738e5348 RS |
1764 | if (ELF_R_TYPE (sec->owner, rel->r_info) == R_MIPS_NONE) |
1765 | return ELF_R_SYM (sec->owner, rel->r_info); | |
1766 | ||
1767 | /* Otherwise trust the first relocation, whatever its kind. This is | |
1768 | the traditional behavior. */ | |
1769 | if (relocs < relend) | |
1770 | return ELF_R_SYM (sec->owner, relocs->r_info); | |
1771 | ||
1772 | return 0; | |
1773 | } | |
b49e97c9 TS |
1774 | |
1775 | /* Check the mips16 stubs for a particular symbol, and see if we can | |
1776 | discard them. */ | |
1777 | ||
861fb55a DJ |
1778 | static void |
1779 | mips_elf_check_mips16_stubs (struct bfd_link_info *info, | |
1780 | struct mips_elf_link_hash_entry *h) | |
b49e97c9 | 1781 | { |
738e5348 RS |
1782 | /* Dynamic symbols must use the standard call interface, in case other |
1783 | objects try to call them. */ | |
1784 | if (h->fn_stub != NULL | |
1785 | && h->root.dynindx != -1) | |
1786 | { | |
1787 | mips_elf_create_shadow_symbol (info, h, ".mips16."); | |
0a1b45a2 | 1788 | h->need_fn_stub = true; |
738e5348 RS |
1789 | } |
1790 | ||
b49e97c9 TS |
1791 | if (h->fn_stub != NULL |
1792 | && ! h->need_fn_stub) | |
1793 | { | |
1794 | /* We don't need the fn_stub; the only references to this symbol | |
07d6d2b8 AM |
1795 | are 16 bit calls. Clobber the size to 0 to prevent it from |
1796 | being included in the link. */ | |
eea6121a | 1797 | h->fn_stub->size = 0; |
b49e97c9 TS |
1798 | h->fn_stub->flags &= ~SEC_RELOC; |
1799 | h->fn_stub->reloc_count = 0; | |
1800 | h->fn_stub->flags |= SEC_EXCLUDE; | |
ca9584fb | 1801 | h->fn_stub->output_section = bfd_abs_section_ptr; |
b49e97c9 TS |
1802 | } |
1803 | ||
1804 | if (h->call_stub != NULL | |
30c09090 | 1805 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1806 | { |
1807 | /* We don't need the call_stub; this is a 16 bit function, so | |
07d6d2b8 AM |
1808 | calls from other 16 bit functions are OK. Clobber the size |
1809 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1810 | h->call_stub->size = 0; |
b49e97c9 TS |
1811 | h->call_stub->flags &= ~SEC_RELOC; |
1812 | h->call_stub->reloc_count = 0; | |
1813 | h->call_stub->flags |= SEC_EXCLUDE; | |
ca9584fb | 1814 | h->call_stub->output_section = bfd_abs_section_ptr; |
b49e97c9 TS |
1815 | } |
1816 | ||
1817 | if (h->call_fp_stub != NULL | |
30c09090 | 1818 | && ELF_ST_IS_MIPS16 (h->root.other)) |
b49e97c9 TS |
1819 | { |
1820 | /* We don't need the call_stub; this is a 16 bit function, so | |
07d6d2b8 AM |
1821 | calls from other 16 bit functions are OK. Clobber the size |
1822 | to 0 to prevent it from being included in the link. */ | |
eea6121a | 1823 | h->call_fp_stub->size = 0; |
b49e97c9 TS |
1824 | h->call_fp_stub->flags &= ~SEC_RELOC; |
1825 | h->call_fp_stub->reloc_count = 0; | |
1826 | h->call_fp_stub->flags |= SEC_EXCLUDE; | |
ca9584fb | 1827 | h->call_fp_stub->output_section = bfd_abs_section_ptr; |
b49e97c9 | 1828 | } |
861fb55a DJ |
1829 | } |
1830 | ||
1831 | /* Hashtable callbacks for mips_elf_la25_stubs. */ | |
1832 | ||
1833 | static hashval_t | |
1834 | mips_elf_la25_stub_hash (const void *entry_) | |
1835 | { | |
1836 | const struct mips_elf_la25_stub *entry; | |
1837 | ||
1838 | entry = (struct mips_elf_la25_stub *) entry_; | |
1839 | return entry->h->root.root.u.def.section->id | |
1840 | + entry->h->root.root.u.def.value; | |
1841 | } | |
1842 | ||
1843 | static int | |
1844 | mips_elf_la25_stub_eq (const void *entry1_, const void *entry2_) | |
1845 | { | |
1846 | const struct mips_elf_la25_stub *entry1, *entry2; | |
1847 | ||
1848 | entry1 = (struct mips_elf_la25_stub *) entry1_; | |
1849 | entry2 = (struct mips_elf_la25_stub *) entry2_; | |
1850 | return ((entry1->h->root.root.u.def.section | |
1851 | == entry2->h->root.root.u.def.section) | |
1852 | && (entry1->h->root.root.u.def.value | |
1853 | == entry2->h->root.root.u.def.value)); | |
1854 | } | |
1855 | ||
1856 | /* Called by the linker to set up the la25 stub-creation code. FN is | |
1857 | the linker's implementation of add_stub_function. Return true on | |
1858 | success. */ | |
1859 | ||
0a1b45a2 | 1860 | bool |
861fb55a DJ |
1861 | _bfd_mips_elf_init_stubs (struct bfd_link_info *info, |
1862 | asection *(*fn) (const char *, asection *, | |
1863 | asection *)) | |
1864 | { | |
1865 | struct mips_elf_link_hash_table *htab; | |
1866 | ||
1867 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 1868 | if (htab == NULL) |
0a1b45a2 | 1869 | return false; |
4dfe6ac6 | 1870 | |
861fb55a DJ |
1871 | htab->add_stub_section = fn; |
1872 | htab->la25_stubs = htab_try_create (1, mips_elf_la25_stub_hash, | |
1873 | mips_elf_la25_stub_eq, NULL); | |
1874 | if (htab->la25_stubs == NULL) | |
0a1b45a2 | 1875 | return false; |
861fb55a | 1876 | |
0a1b45a2 | 1877 | return true; |
861fb55a DJ |
1878 | } |
1879 | ||
1880 | /* Return true if H is a locally-defined PIC function, in the sense | |
8f0c309a CLT |
1881 | that it or its fn_stub might need $25 to be valid on entry. |
1882 | Note that MIPS16 functions set up $gp using PC-relative instructions, | |
1883 | so they themselves never need $25 to be valid. Only non-MIPS16 | |
1884 | entry points are of interest here. */ | |
861fb55a | 1885 | |
0a1b45a2 | 1886 | static bool |
861fb55a DJ |
1887 | mips_elf_local_pic_function_p (struct mips_elf_link_hash_entry *h) |
1888 | { | |
1889 | return ((h->root.root.type == bfd_link_hash_defined | |
1890 | || h->root.root.type == bfd_link_hash_defweak) | |
1891 | && h->root.def_regular | |
1892 | && !bfd_is_abs_section (h->root.root.u.def.section) | |
f02cb058 | 1893 | && !bfd_is_und_section (h->root.root.u.def.section) |
8f0c309a CLT |
1894 | && (!ELF_ST_IS_MIPS16 (h->root.other) |
1895 | || (h->fn_stub && h->need_fn_stub)) | |
861fb55a DJ |
1896 | && (PIC_OBJECT_P (h->root.root.u.def.section->owner) |
1897 | || ELF_ST_IS_MIPS_PIC (h->root.other))); | |
1898 | } | |
1899 | ||
8f0c309a CLT |
1900 | /* Set *SEC to the input section that contains the target of STUB. |
1901 | Return the offset of the target from the start of that section. */ | |
1902 | ||
1903 | static bfd_vma | |
1904 | mips_elf_get_la25_target (struct mips_elf_la25_stub *stub, | |
1905 | asection **sec) | |
1906 | { | |
1907 | if (ELF_ST_IS_MIPS16 (stub->h->root.other)) | |
1908 | { | |
1909 | BFD_ASSERT (stub->h->need_fn_stub); | |
1910 | *sec = stub->h->fn_stub; | |
1911 | return 0; | |
1912 | } | |
1913 | else | |
1914 | { | |
1915 | *sec = stub->h->root.root.u.def.section; | |
1916 | return stub->h->root.root.u.def.value; | |
1917 | } | |
1918 | } | |
1919 | ||
861fb55a DJ |
1920 | /* STUB describes an la25 stub that we have decided to implement |
1921 | by inserting an LUI/ADDIU pair before the target function. | |
1922 | Create the section and redirect the function symbol to it. */ | |
1923 | ||
0a1b45a2 | 1924 | static bool |
861fb55a DJ |
1925 | mips_elf_add_la25_intro (struct mips_elf_la25_stub *stub, |
1926 | struct bfd_link_info *info) | |
1927 | { | |
1928 | struct mips_elf_link_hash_table *htab; | |
1929 | char *name; | |
1930 | asection *s, *input_section; | |
1931 | unsigned int align; | |
1932 | ||
1933 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 1934 | if (htab == NULL) |
0a1b45a2 | 1935 | return false; |
861fb55a DJ |
1936 | |
1937 | /* Create a unique name for the new section. */ | |
1938 | name = bfd_malloc (11 + sizeof (".text.stub.")); | |
1939 | if (name == NULL) | |
0a1b45a2 | 1940 | return false; |
861fb55a DJ |
1941 | sprintf (name, ".text.stub.%d", (int) htab_elements (htab->la25_stubs)); |
1942 | ||
1943 | /* Create the section. */ | |
8f0c309a | 1944 | mips_elf_get_la25_target (stub, &input_section); |
861fb55a DJ |
1945 | s = htab->add_stub_section (name, input_section, |
1946 | input_section->output_section); | |
1947 | if (s == NULL) | |
0a1b45a2 | 1948 | return false; |
861fb55a DJ |
1949 | |
1950 | /* Make sure that any padding goes before the stub. */ | |
1951 | align = input_section->alignment_power; | |
fd361982 | 1952 | if (!bfd_set_section_alignment (s, align)) |
0a1b45a2 | 1953 | return false; |
861fb55a DJ |
1954 | if (align > 3) |
1955 | s->size = (1 << align) - 8; | |
1956 | ||
1957 | /* Create a symbol for the stub. */ | |
1958 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 8); | |
1959 | stub->stub_section = s; | |
1960 | stub->offset = s->size; | |
1961 | ||
1962 | /* Allocate room for it. */ | |
1963 | s->size += 8; | |
0a1b45a2 | 1964 | return true; |
861fb55a DJ |
1965 | } |
1966 | ||
1967 | /* STUB describes an la25 stub that we have decided to implement | |
1968 | with a separate trampoline. Allocate room for it and redirect | |
1969 | the function symbol to it. */ | |
1970 | ||
0a1b45a2 | 1971 | static bool |
861fb55a DJ |
1972 | mips_elf_add_la25_trampoline (struct mips_elf_la25_stub *stub, |
1973 | struct bfd_link_info *info) | |
1974 | { | |
1975 | struct mips_elf_link_hash_table *htab; | |
1976 | asection *s; | |
1977 | ||
1978 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 1979 | if (htab == NULL) |
0a1b45a2 | 1980 | return false; |
861fb55a DJ |
1981 | |
1982 | /* Create a trampoline section, if we haven't already. */ | |
1983 | s = htab->strampoline; | |
1984 | if (s == NULL) | |
1985 | { | |
1986 | asection *input_section = stub->h->root.root.u.def.section; | |
1987 | s = htab->add_stub_section (".text", NULL, | |
1988 | input_section->output_section); | |
fd361982 | 1989 | if (s == NULL || !bfd_set_section_alignment (s, 4)) |
0a1b45a2 | 1990 | return false; |
861fb55a DJ |
1991 | htab->strampoline = s; |
1992 | } | |
1993 | ||
1994 | /* Create a symbol for the stub. */ | |
1995 | mips_elf_create_stub_symbol (info, stub->h, ".pic.", s, s->size, 16); | |
1996 | stub->stub_section = s; | |
1997 | stub->offset = s->size; | |
1998 | ||
1999 | /* Allocate room for it. */ | |
2000 | s->size += 16; | |
0a1b45a2 | 2001 | return true; |
861fb55a DJ |
2002 | } |
2003 | ||
2004 | /* H describes a symbol that needs an la25 stub. Make sure that an | |
2005 | appropriate stub exists and point H at it. */ | |
2006 | ||
0a1b45a2 | 2007 | static bool |
861fb55a DJ |
2008 | mips_elf_add_la25_stub (struct bfd_link_info *info, |
2009 | struct mips_elf_link_hash_entry *h) | |
2010 | { | |
2011 | struct mips_elf_link_hash_table *htab; | |
2012 | struct mips_elf_la25_stub search, *stub; | |
0a1b45a2 | 2013 | bool use_trampoline_p; |
861fb55a DJ |
2014 | asection *s; |
2015 | bfd_vma value; | |
2016 | void **slot; | |
2017 | ||
861fb55a DJ |
2018 | /* Describe the stub we want. */ |
2019 | search.stub_section = NULL; | |
2020 | search.offset = 0; | |
2021 | search.h = h; | |
2022 | ||
2023 | /* See if we've already created an equivalent stub. */ | |
2024 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 2025 | if (htab == NULL) |
0a1b45a2 | 2026 | return false; |
4dfe6ac6 | 2027 | |
861fb55a DJ |
2028 | slot = htab_find_slot (htab->la25_stubs, &search, INSERT); |
2029 | if (slot == NULL) | |
0a1b45a2 | 2030 | return false; |
861fb55a DJ |
2031 | |
2032 | stub = (struct mips_elf_la25_stub *) *slot; | |
2033 | if (stub != NULL) | |
2034 | { | |
2035 | /* We can reuse the existing stub. */ | |
2036 | h->la25_stub = stub; | |
0a1b45a2 | 2037 | return true; |
861fb55a DJ |
2038 | } |
2039 | ||
2040 | /* Create a permanent copy of ENTRY and add it to the hash table. */ | |
2041 | stub = bfd_malloc (sizeof (search)); | |
2042 | if (stub == NULL) | |
0a1b45a2 | 2043 | return false; |
861fb55a DJ |
2044 | *stub = search; |
2045 | *slot = stub; | |
2046 | ||
8f0c309a CLT |
2047 | /* Prefer to use LUI/ADDIU stubs if the function is at the beginning |
2048 | of the section and if we would need no more than 2 nops. */ | |
2049 | value = mips_elf_get_la25_target (stub, &s); | |
fe152e64 MR |
2050 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
2051 | value &= ~1; | |
8f0c309a CLT |
2052 | use_trampoline_p = (value != 0 || s->alignment_power > 4); |
2053 | ||
861fb55a DJ |
2054 | h->la25_stub = stub; |
2055 | return (use_trampoline_p | |
2056 | ? mips_elf_add_la25_trampoline (stub, info) | |
2057 | : mips_elf_add_la25_intro (stub, info)); | |
2058 | } | |
2059 | ||
2060 | /* A mips_elf_link_hash_traverse callback that is called before sizing | |
2061 | sections. DATA points to a mips_htab_traverse_info structure. */ | |
2062 | ||
0a1b45a2 | 2063 | static bool |
861fb55a DJ |
2064 | mips_elf_check_symbols (struct mips_elf_link_hash_entry *h, void *data) |
2065 | { | |
2066 | struct mips_htab_traverse_info *hti; | |
2067 | ||
2068 | hti = (struct mips_htab_traverse_info *) data; | |
0e1862bb | 2069 | if (!bfd_link_relocatable (hti->info)) |
861fb55a | 2070 | mips_elf_check_mips16_stubs (hti->info, h); |
b49e97c9 | 2071 | |
861fb55a DJ |
2072 | if (mips_elf_local_pic_function_p (h)) |
2073 | { | |
ba85c43e NC |
2074 | /* PR 12845: If H is in a section that has been garbage |
2075 | collected it will have its output section set to *ABS*. */ | |
2076 | if (bfd_is_abs_section (h->root.root.u.def.section->output_section)) | |
0a1b45a2 | 2077 | return true; |
ba85c43e | 2078 | |
861fb55a DJ |
2079 | /* H is a function that might need $25 to be valid on entry. |
2080 | If we're creating a non-PIC relocatable object, mark H as | |
2081 | being PIC. If we're creating a non-relocatable object with | |
2082 | non-PIC branches and jumps to H, make sure that H has an la25 | |
2083 | stub. */ | |
0e1862bb | 2084 | if (bfd_link_relocatable (hti->info)) |
861fb55a DJ |
2085 | { |
2086 | if (!PIC_OBJECT_P (hti->output_bfd)) | |
2087 | h->root.other = ELF_ST_SET_MIPS_PIC (h->root.other); | |
2088 | } | |
2089 | else if (h->has_nonpic_branches && !mips_elf_add_la25_stub (hti->info, h)) | |
2090 | { | |
0a1b45a2 AM |
2091 | hti->error = true; |
2092 | return false; | |
861fb55a DJ |
2093 | } |
2094 | } | |
0a1b45a2 | 2095 | return true; |
b49e97c9 TS |
2096 | } |
2097 | \f | |
d6f16593 MR |
2098 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. |
2099 | Most mips16 instructions are 16 bits, but these instructions | |
2100 | are 32 bits. | |
2101 | ||
2102 | The format of these instructions is: | |
2103 | ||
2104 | +--------------+--------------------------------+ | |
2105 | | JALX | X| Imm 20:16 | Imm 25:21 | | |
2106 | +--------------+--------------------------------+ | |
07d6d2b8 | 2107 | | Immediate 15:0 | |
d6f16593 MR |
2108 | +-----------------------------------------------+ |
2109 | ||
2110 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. | |
2111 | Note that the immediate value in the first word is swapped. | |
2112 | ||
2113 | When producing a relocatable object file, R_MIPS16_26 is | |
2114 | handled mostly like R_MIPS_26. In particular, the addend is | |
2115 | stored as a straight 26-bit value in a 32-bit instruction. | |
2116 | (gas makes life simpler for itself by never adjusting a | |
2117 | R_MIPS16_26 reloc to be against a section, so the addend is | |
2118 | always zero). However, the 32 bit instruction is stored as 2 | |
2119 | 16-bit values, rather than a single 32-bit value. In a | |
2120 | big-endian file, the result is the same; in a little-endian | |
2121 | file, the two 16-bit halves of the 32 bit value are swapped. | |
2122 | This is so that a disassembler can recognize the jal | |
2123 | instruction. | |
2124 | ||
2125 | When doing a final link, R_MIPS16_26 is treated as a 32 bit | |
2126 | instruction stored as two 16-bit values. The addend A is the | |
2127 | contents of the targ26 field. The calculation is the same as | |
2128 | R_MIPS_26. When storing the calculated value, reorder the | |
2129 | immediate value as shown above, and don't forget to store the | |
2130 | value as two 16-bit values. | |
2131 | ||
2132 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, | |
2133 | defined as | |
2134 | ||
2135 | big-endian: | |
2136 | +--------+----------------------+ | |
07d6d2b8 AM |
2137 | | | | |
2138 | | | targ26-16 | | |
2139 | |31 26|25 0| | |
d6f16593 MR |
2140 | +--------+----------------------+ |
2141 | ||
2142 | little-endian: | |
2143 | +----------+------+-------------+ | |
07d6d2b8 AM |
2144 | | | | | |
2145 | | sub1 | | sub2 | | |
2146 | |0 9|10 15|16 31| | |
d6f16593 MR |
2147 | +----------+--------------------+ |
2148 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is | |
2149 | ((sub1 << 16) | sub2)). | |
2150 | ||
2151 | When producing a relocatable object file, the calculation is | |
2152 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
2153 | When producing a fully linked file, the calculation is | |
2154 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) | |
2155 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) | |
2156 | ||
738e5348 RS |
2157 | The table below lists the other MIPS16 instruction relocations. |
2158 | Each one is calculated in the same way as the non-MIPS16 relocation | |
2159 | given on the right, but using the extended MIPS16 layout of 16-bit | |
2160 | immediate fields: | |
2161 | ||
2162 | R_MIPS16_GPREL R_MIPS_GPREL16 | |
2163 | R_MIPS16_GOT16 R_MIPS_GOT16 | |
2164 | R_MIPS16_CALL16 R_MIPS_CALL16 | |
2165 | R_MIPS16_HI16 R_MIPS_HI16 | |
2166 | R_MIPS16_LO16 R_MIPS_LO16 | |
2167 | ||
2168 | A typical instruction will have a format like this: | |
d6f16593 MR |
2169 | |
2170 | +--------------+--------------------------------+ | |
2171 | | EXTEND | Imm 10:5 | Imm 15:11 | | |
2172 | +--------------+--------------------------------+ | |
2173 | | Major | rx | ry | Imm 4:0 | | |
2174 | +--------------+--------------------------------+ | |
2175 | ||
2176 | EXTEND is the five bit value 11110. Major is the instruction | |
2177 | opcode. | |
2178 | ||
738e5348 RS |
2179 | All we need to do here is shuffle the bits appropriately. |
2180 | As above, the two 16-bit halves must be swapped on a | |
c9775dde MR |
2181 | little-endian system. |
2182 | ||
2183 | Finally R_MIPS16_PC16_S1 corresponds to R_MIPS_PC16, however the | |
2184 | relocatable field is shifted by 1 rather than 2 and the same bit | |
2185 | shuffling is done as with the relocations above. */ | |
738e5348 | 2186 | |
0a1b45a2 | 2187 | static inline bool |
738e5348 RS |
2188 | mips16_reloc_p (int r_type) |
2189 | { | |
2190 | switch (r_type) | |
2191 | { | |
2192 | case R_MIPS16_26: | |
2193 | case R_MIPS16_GPREL: | |
2194 | case R_MIPS16_GOT16: | |
2195 | case R_MIPS16_CALL16: | |
2196 | case R_MIPS16_HI16: | |
2197 | case R_MIPS16_LO16: | |
d0f13682 CLT |
2198 | case R_MIPS16_TLS_GD: |
2199 | case R_MIPS16_TLS_LDM: | |
2200 | case R_MIPS16_TLS_DTPREL_HI16: | |
2201 | case R_MIPS16_TLS_DTPREL_LO16: | |
2202 | case R_MIPS16_TLS_GOTTPREL: | |
2203 | case R_MIPS16_TLS_TPREL_HI16: | |
2204 | case R_MIPS16_TLS_TPREL_LO16: | |
c9775dde | 2205 | case R_MIPS16_PC16_S1: |
0a1b45a2 | 2206 | return true; |
738e5348 RS |
2207 | |
2208 | default: | |
0a1b45a2 | 2209 | return false; |
738e5348 RS |
2210 | } |
2211 | } | |
2212 | ||
df58fc94 RS |
2213 | /* Check if a microMIPS reloc. */ |
2214 | ||
0a1b45a2 | 2215 | static inline bool |
df58fc94 RS |
2216 | micromips_reloc_p (unsigned int r_type) |
2217 | { | |
2218 | return r_type >= R_MICROMIPS_min && r_type < R_MICROMIPS_max; | |
2219 | } | |
2220 | ||
2221 | /* Similar to MIPS16, the two 16-bit halves in microMIPS must be swapped | |
2222 | on a little-endian system. This does not apply to R_MICROMIPS_PC7_S1 | |
2223 | and R_MICROMIPS_PC10_S1 relocs that apply to 16-bit instructions. */ | |
2224 | ||
0a1b45a2 | 2225 | static inline bool |
df58fc94 RS |
2226 | micromips_reloc_shuffle_p (unsigned int r_type) |
2227 | { | |
2228 | return (micromips_reloc_p (r_type) | |
2229 | && r_type != R_MICROMIPS_PC7_S1 | |
2230 | && r_type != R_MICROMIPS_PC10_S1); | |
2231 | } | |
2232 | ||
0a1b45a2 | 2233 | static inline bool |
738e5348 RS |
2234 | got16_reloc_p (int r_type) |
2235 | { | |
df58fc94 RS |
2236 | return (r_type == R_MIPS_GOT16 |
2237 | || r_type == R_MIPS16_GOT16 | |
2238 | || r_type == R_MICROMIPS_GOT16); | |
738e5348 RS |
2239 | } |
2240 | ||
0a1b45a2 | 2241 | static inline bool |
738e5348 RS |
2242 | call16_reloc_p (int r_type) |
2243 | { | |
df58fc94 RS |
2244 | return (r_type == R_MIPS_CALL16 |
2245 | || r_type == R_MIPS16_CALL16 | |
2246 | || r_type == R_MICROMIPS_CALL16); | |
2247 | } | |
2248 | ||
0a1b45a2 | 2249 | static inline bool |
df58fc94 RS |
2250 | got_disp_reloc_p (unsigned int r_type) |
2251 | { | |
2252 | return r_type == R_MIPS_GOT_DISP || r_type == R_MICROMIPS_GOT_DISP; | |
2253 | } | |
2254 | ||
0a1b45a2 | 2255 | static inline bool |
df58fc94 RS |
2256 | got_page_reloc_p (unsigned int r_type) |
2257 | { | |
2258 | return r_type == R_MIPS_GOT_PAGE || r_type == R_MICROMIPS_GOT_PAGE; | |
2259 | } | |
2260 | ||
0a1b45a2 | 2261 | static inline bool |
df58fc94 RS |
2262 | got_lo16_reloc_p (unsigned int r_type) |
2263 | { | |
2264 | return r_type == R_MIPS_GOT_LO16 || r_type == R_MICROMIPS_GOT_LO16; | |
2265 | } | |
2266 | ||
0a1b45a2 | 2267 | static inline bool |
df58fc94 RS |
2268 | call_hi16_reloc_p (unsigned int r_type) |
2269 | { | |
2270 | return r_type == R_MIPS_CALL_HI16 || r_type == R_MICROMIPS_CALL_HI16; | |
2271 | } | |
2272 | ||
0a1b45a2 | 2273 | static inline bool |
df58fc94 RS |
2274 | call_lo16_reloc_p (unsigned int r_type) |
2275 | { | |
2276 | return r_type == R_MIPS_CALL_LO16 || r_type == R_MICROMIPS_CALL_LO16; | |
738e5348 RS |
2277 | } |
2278 | ||
0a1b45a2 | 2279 | static inline bool |
738e5348 RS |
2280 | hi16_reloc_p (int r_type) |
2281 | { | |
df58fc94 RS |
2282 | return (r_type == R_MIPS_HI16 |
2283 | || r_type == R_MIPS16_HI16 | |
7361da2c AB |
2284 | || r_type == R_MICROMIPS_HI16 |
2285 | || r_type == R_MIPS_PCHI16); | |
738e5348 | 2286 | } |
d6f16593 | 2287 | |
0a1b45a2 | 2288 | static inline bool |
738e5348 RS |
2289 | lo16_reloc_p (int r_type) |
2290 | { | |
df58fc94 RS |
2291 | return (r_type == R_MIPS_LO16 |
2292 | || r_type == R_MIPS16_LO16 | |
7361da2c AB |
2293 | || r_type == R_MICROMIPS_LO16 |
2294 | || r_type == R_MIPS_PCLO16); | |
738e5348 RS |
2295 | } |
2296 | ||
0a1b45a2 | 2297 | static inline bool |
738e5348 RS |
2298 | mips16_call_reloc_p (int r_type) |
2299 | { | |
2300 | return r_type == R_MIPS16_26 || r_type == R_MIPS16_CALL16; | |
2301 | } | |
d6f16593 | 2302 | |
0a1b45a2 | 2303 | static inline bool |
38a7df63 CF |
2304 | jal_reloc_p (int r_type) |
2305 | { | |
df58fc94 RS |
2306 | return (r_type == R_MIPS_26 |
2307 | || r_type == R_MIPS16_26 | |
2308 | || r_type == R_MICROMIPS_26_S1); | |
2309 | } | |
2310 | ||
0a1b45a2 | 2311 | static inline bool |
99aefae6 MR |
2312 | b_reloc_p (int r_type) |
2313 | { | |
2314 | return (r_type == R_MIPS_PC26_S2 | |
2315 | || r_type == R_MIPS_PC21_S2 | |
2316 | || r_type == R_MIPS_PC16 | |
c9775dde | 2317 | || r_type == R_MIPS_GNU_REL16_S2 |
9d862524 MR |
2318 | || r_type == R_MIPS16_PC16_S1 |
2319 | || r_type == R_MICROMIPS_PC16_S1 | |
2320 | || r_type == R_MICROMIPS_PC10_S1 | |
2321 | || r_type == R_MICROMIPS_PC7_S1); | |
99aefae6 MR |
2322 | } |
2323 | ||
0a1b45a2 | 2324 | static inline bool |
7361da2c AB |
2325 | aligned_pcrel_reloc_p (int r_type) |
2326 | { | |
2327 | return (r_type == R_MIPS_PC18_S3 | |
2328 | || r_type == R_MIPS_PC19_S2); | |
2329 | } | |
2330 | ||
0a1b45a2 | 2331 | static inline bool |
9d862524 MR |
2332 | branch_reloc_p (int r_type) |
2333 | { | |
2334 | return (r_type == R_MIPS_26 | |
2335 | || r_type == R_MIPS_PC26_S2 | |
2336 | || r_type == R_MIPS_PC21_S2 | |
2337 | || r_type == R_MIPS_PC16 | |
2338 | || r_type == R_MIPS_GNU_REL16_S2); | |
2339 | } | |
2340 | ||
0a1b45a2 | 2341 | static inline bool |
c9775dde MR |
2342 | mips16_branch_reloc_p (int r_type) |
2343 | { | |
2344 | return (r_type == R_MIPS16_26 | |
2345 | || r_type == R_MIPS16_PC16_S1); | |
2346 | } | |
2347 | ||
0a1b45a2 | 2348 | static inline bool |
df58fc94 RS |
2349 | micromips_branch_reloc_p (int r_type) |
2350 | { | |
2351 | return (r_type == R_MICROMIPS_26_S1 | |
2352 | || r_type == R_MICROMIPS_PC16_S1 | |
2353 | || r_type == R_MICROMIPS_PC10_S1 | |
2354 | || r_type == R_MICROMIPS_PC7_S1); | |
2355 | } | |
2356 | ||
0a1b45a2 | 2357 | static inline bool |
df58fc94 RS |
2358 | tls_gd_reloc_p (unsigned int r_type) |
2359 | { | |
d0f13682 CLT |
2360 | return (r_type == R_MIPS_TLS_GD |
2361 | || r_type == R_MIPS16_TLS_GD | |
2362 | || r_type == R_MICROMIPS_TLS_GD); | |
df58fc94 RS |
2363 | } |
2364 | ||
0a1b45a2 | 2365 | static inline bool |
df58fc94 RS |
2366 | tls_ldm_reloc_p (unsigned int r_type) |
2367 | { | |
d0f13682 CLT |
2368 | return (r_type == R_MIPS_TLS_LDM |
2369 | || r_type == R_MIPS16_TLS_LDM | |
2370 | || r_type == R_MICROMIPS_TLS_LDM); | |
df58fc94 RS |
2371 | } |
2372 | ||
0a1b45a2 | 2373 | static inline bool |
df58fc94 RS |
2374 | tls_gottprel_reloc_p (unsigned int r_type) |
2375 | { | |
d0f13682 CLT |
2376 | return (r_type == R_MIPS_TLS_GOTTPREL |
2377 | || r_type == R_MIPS16_TLS_GOTTPREL | |
2378 | || r_type == R_MICROMIPS_TLS_GOTTPREL); | |
38a7df63 CF |
2379 | } |
2380 | ||
73425813 AM |
2381 | static inline bool |
2382 | needs_shuffle (int r_type) | |
2383 | { | |
2384 | return mips16_reloc_p (r_type) || micromips_reloc_shuffle_p (r_type); | |
2385 | } | |
2386 | ||
d6f16593 | 2387 | void |
df58fc94 | 2388 | _bfd_mips_elf_reloc_unshuffle (bfd *abfd, int r_type, |
0a1b45a2 | 2389 | bool jal_shuffle, bfd_byte *data) |
d6f16593 | 2390 | { |
df58fc94 | 2391 | bfd_vma first, second, val; |
d6f16593 | 2392 | |
73425813 | 2393 | if (!needs_shuffle (r_type)) |
d6f16593 MR |
2394 | return; |
2395 | ||
df58fc94 RS |
2396 | /* Pick up the first and second halfwords of the instruction. */ |
2397 | first = bfd_get_16 (abfd, data); | |
2398 | second = bfd_get_16 (abfd, data + 2); | |
2399 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) | |
2400 | val = first << 16 | second; | |
2401 | else if (r_type != R_MIPS16_26) | |
2402 | val = (((first & 0xf800) << 16) | ((second & 0xffe0) << 11) | |
2403 | | ((first & 0x1f) << 11) | (first & 0x7e0) | (second & 0x1f)); | |
d6f16593 | 2404 | else |
df58fc94 RS |
2405 | val = (((first & 0xfc00) << 16) | ((first & 0x3e0) << 11) |
2406 | | ((first & 0x1f) << 21) | second); | |
d6f16593 MR |
2407 | bfd_put_32 (abfd, val, data); |
2408 | } | |
2409 | ||
2410 | void | |
df58fc94 | 2411 | _bfd_mips_elf_reloc_shuffle (bfd *abfd, int r_type, |
0a1b45a2 | 2412 | bool jal_shuffle, bfd_byte *data) |
d6f16593 | 2413 | { |
df58fc94 | 2414 | bfd_vma first, second, val; |
d6f16593 | 2415 | |
73425813 | 2416 | if (!needs_shuffle (r_type)) |
d6f16593 MR |
2417 | return; |
2418 | ||
2419 | val = bfd_get_32 (abfd, data); | |
df58fc94 | 2420 | if (micromips_reloc_p (r_type) || (r_type == R_MIPS16_26 && !jal_shuffle)) |
d6f16593 | 2421 | { |
df58fc94 RS |
2422 | second = val & 0xffff; |
2423 | first = val >> 16; | |
2424 | } | |
2425 | else if (r_type != R_MIPS16_26) | |
2426 | { | |
2427 | second = ((val >> 11) & 0xffe0) | (val & 0x1f); | |
2428 | first = ((val >> 16) & 0xf800) | ((val >> 11) & 0x1f) | (val & 0x7e0); | |
d6f16593 MR |
2429 | } |
2430 | else | |
2431 | { | |
df58fc94 RS |
2432 | second = val & 0xffff; |
2433 | first = ((val >> 16) & 0xfc00) | ((val >> 11) & 0x3e0) | |
2434 | | ((val >> 21) & 0x1f); | |
d6f16593 | 2435 | } |
df58fc94 RS |
2436 | bfd_put_16 (abfd, second, data + 2); |
2437 | bfd_put_16 (abfd, first, data); | |
d6f16593 MR |
2438 | } |
2439 | ||
73425813 AM |
2440 | /* Perform reloc offset checking. |
2441 | We can only use bfd_reloc_offset_in_range, which takes into account | |
2442 | the size of the field being relocated, when section contents will | |
2443 | be accessed because mips object files may use relocations that seem | |
2444 | to access beyond section limits. | |
2445 | gas/testsuite/gas/mips/dla-reloc.s is an example that puts | |
2446 | R_MIPS_SUB, a 64-bit relocation, on the last instruction in the | |
2447 | section. The R_MIPS_SUB applies to the addend for the next reloc | |
2448 | rather than the section contents. | |
2449 | ||
2450 | CHECK is CHECK_STD for the standard bfd_reloc_offset_in_range check, | |
2451 | CHECK_INPLACE to only check partial_inplace relocs, and | |
2452 | CHECK_SHUFFLE to only check relocs that shuffle/unshuffle. */ | |
2453 | ||
2454 | bool | |
2455 | _bfd_mips_reloc_offset_in_range (bfd *abfd, asection *input_section, | |
2456 | arelent *reloc_entry, enum reloc_check check) | |
2457 | { | |
2458 | if (check == check_inplace && !reloc_entry->howto->partial_inplace) | |
2459 | return true; | |
2460 | if (check == check_shuffle && !needs_shuffle (reloc_entry->howto->type)) | |
2461 | return true; | |
2462 | return bfd_reloc_offset_in_range (reloc_entry->howto, abfd, | |
2463 | input_section, reloc_entry->address); | |
2464 | } | |
2465 | ||
b49e97c9 | 2466 | bfd_reloc_status_type |
9719ad41 RS |
2467 | _bfd_mips_elf_gprel16_with_gp (bfd *abfd, asymbol *symbol, |
2468 | arelent *reloc_entry, asection *input_section, | |
0a1b45a2 | 2469 | bool relocatable, void *data, bfd_vma gp) |
b49e97c9 TS |
2470 | { |
2471 | bfd_vma relocation; | |
a7ebbfdf | 2472 | bfd_signed_vma val; |
30ac9238 | 2473 | bfd_reloc_status_type status; |
b49e97c9 TS |
2474 | |
2475 | if (bfd_is_com_section (symbol->section)) | |
2476 | relocation = 0; | |
2477 | else | |
2478 | relocation = symbol->value; | |
2479 | ||
2480 | relocation += symbol->section->output_section->vma; | |
2481 | relocation += symbol->section->output_offset; | |
2482 | ||
b49e97c9 | 2483 | /* Set val to the offset into the section or symbol. */ |
a7ebbfdf TS |
2484 | val = reloc_entry->addend; |
2485 | ||
30ac9238 | 2486 | _bfd_mips_elf_sign_extend (val, 16); |
a7ebbfdf | 2487 | |
b49e97c9 | 2488 | /* Adjust val for the final section location and GP value. If we |
1049f94e | 2489 | are producing relocatable output, we don't want to do this for |
b49e97c9 | 2490 | an external symbol. */ |
1049f94e | 2491 | if (! relocatable |
b49e97c9 TS |
2492 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
2493 | val += relocation - gp; | |
2494 | ||
a7ebbfdf TS |
2495 | if (reloc_entry->howto->partial_inplace) |
2496 | { | |
73425813 AM |
2497 | if (!bfd_reloc_offset_in_range (reloc_entry->howto, abfd, input_section, |
2498 | reloc_entry->address)) | |
2499 | return bfd_reloc_outofrange; | |
2500 | ||
30ac9238 RS |
2501 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
2502 | (bfd_byte *) data | |
2503 | + reloc_entry->address); | |
2504 | if (status != bfd_reloc_ok) | |
2505 | return status; | |
a7ebbfdf TS |
2506 | } |
2507 | else | |
2508 | reloc_entry->addend = val; | |
b49e97c9 | 2509 | |
1049f94e | 2510 | if (relocatable) |
b49e97c9 | 2511 | reloc_entry->address += input_section->output_offset; |
30ac9238 RS |
2512 | |
2513 | return bfd_reloc_ok; | |
2514 | } | |
2515 | ||
30ac9238 RS |
2516 | /* A howto special_function for REL *HI16 relocations. We can only |
2517 | calculate the correct value once we've seen the partnering | |
2518 | *LO16 relocation, so just save the information for later. | |
2519 | ||
2520 | The ABI requires that the *LO16 immediately follow the *HI16. | |
2521 | However, as a GNU extension, we permit an arbitrary number of | |
2522 | *HI16s to be associated with a single *LO16. This significantly | |
2523 | simplies the relocation handling in gcc. */ | |
2524 | ||
2525 | bfd_reloc_status_type | |
c799eddb | 2526 | _bfd_mips_elf_hi16_reloc (bfd *abfd, arelent *reloc_entry, |
30ac9238 RS |
2527 | asymbol *symbol ATTRIBUTE_UNUSED, void *data, |
2528 | asection *input_section, bfd *output_bfd, | |
2529 | char **error_message ATTRIBUTE_UNUSED) | |
2530 | { | |
2531 | struct mips_hi16 *n; | |
c799eddb | 2532 | struct mips_elf_obj_tdata *tdata; |
30ac9238 | 2533 | |
07515404 | 2534 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
30ac9238 RS |
2535 | return bfd_reloc_outofrange; |
2536 | ||
2537 | n = bfd_malloc (sizeof *n); | |
2538 | if (n == NULL) | |
2539 | return bfd_reloc_outofrange; | |
2540 | ||
c799eddb AM |
2541 | tdata = mips_elf_tdata (abfd); |
2542 | n->next = tdata->mips_hi16_list; | |
30ac9238 RS |
2543 | n->data = data; |
2544 | n->input_section = input_section; | |
2545 | n->rel = *reloc_entry; | |
c799eddb | 2546 | tdata->mips_hi16_list = n; |
30ac9238 RS |
2547 | |
2548 | if (output_bfd != NULL) | |
2549 | reloc_entry->address += input_section->output_offset; | |
2550 | ||
2551 | return bfd_reloc_ok; | |
2552 | } | |
2553 | ||
738e5348 | 2554 | /* A howto special_function for REL R_MIPS*_GOT16 relocations. This is just |
30ac9238 RS |
2555 | like any other 16-bit relocation when applied to global symbols, but is |
2556 | treated in the same as R_MIPS_HI16 when applied to local symbols. */ | |
2557 | ||
2558 | bfd_reloc_status_type | |
2559 | _bfd_mips_elf_got16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2560 | void *data, asection *input_section, | |
2561 | bfd *output_bfd, char **error_message) | |
2562 | { | |
2563 | if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
e6f7f6d1 AM |
2564 | || bfd_is_und_section (bfd_asymbol_section (symbol)) |
2565 | || bfd_is_com_section (bfd_asymbol_section (symbol))) | |
30ac9238 RS |
2566 | /* The relocation is against a global symbol. */ |
2567 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2568 | input_section, output_bfd, | |
2569 | error_message); | |
2570 | ||
2571 | return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, | |
2572 | input_section, output_bfd, error_message); | |
2573 | } | |
2574 | ||
2575 | /* A howto special_function for REL *LO16 relocations. The *LO16 itself | |
2576 | is a straightforward 16 bit inplace relocation, but we must deal with | |
2577 | any partnering high-part relocations as well. */ | |
2578 | ||
2579 | bfd_reloc_status_type | |
2580 | _bfd_mips_elf_lo16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2581 | void *data, asection *input_section, | |
2582 | bfd *output_bfd, char **error_message) | |
2583 | { | |
2584 | bfd_vma vallo; | |
d6f16593 | 2585 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
c799eddb | 2586 | struct mips_elf_obj_tdata *tdata; |
30ac9238 | 2587 | |
73425813 AM |
2588 | if (!bfd_reloc_offset_in_range (reloc_entry->howto, abfd, input_section, |
2589 | reloc_entry->address)) | |
30ac9238 RS |
2590 | return bfd_reloc_outofrange; |
2591 | ||
0a1b45a2 | 2592 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, false, |
d6f16593 | 2593 | location); |
df58fc94 | 2594 | vallo = bfd_get_32 (abfd, location); |
0a1b45a2 | 2595 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, false, |
df58fc94 | 2596 | location); |
d6f16593 | 2597 | |
c799eddb AM |
2598 | tdata = mips_elf_tdata (abfd); |
2599 | while (tdata->mips_hi16_list != NULL) | |
30ac9238 RS |
2600 | { |
2601 | bfd_reloc_status_type ret; | |
2602 | struct mips_hi16 *hi; | |
2603 | ||
c799eddb | 2604 | hi = tdata->mips_hi16_list; |
30ac9238 | 2605 | |
738e5348 RS |
2606 | /* R_MIPS*_GOT16 relocations are something of a special case. We |
2607 | want to install the addend in the same way as for a R_MIPS*_HI16 | |
30ac9238 RS |
2608 | relocation (with a rightshift of 16). However, since GOT16 |
2609 | relocations can also be used with global symbols, their howto | |
2610 | has a rightshift of 0. */ | |
2611 | if (hi->rel.howto->type == R_MIPS_GOT16) | |
0a1b45a2 | 2612 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS_HI16, false); |
738e5348 | 2613 | else if (hi->rel.howto->type == R_MIPS16_GOT16) |
0a1b45a2 | 2614 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MIPS16_HI16, false); |
df58fc94 | 2615 | else if (hi->rel.howto->type == R_MICROMIPS_GOT16) |
0a1b45a2 | 2616 | hi->rel.howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, R_MICROMIPS_HI16, false); |
30ac9238 RS |
2617 | |
2618 | /* VALLO is a signed 16-bit number. Bias it by 0x8000 so that any | |
2619 | carry or borrow will induce a change of +1 or -1 in the high part. */ | |
2620 | hi->rel.addend += (vallo + 0x8000) & 0xffff; | |
2621 | ||
30ac9238 RS |
2622 | ret = _bfd_mips_elf_generic_reloc (abfd, &hi->rel, symbol, hi->data, |
2623 | hi->input_section, output_bfd, | |
2624 | error_message); | |
2625 | if (ret != bfd_reloc_ok) | |
2626 | return ret; | |
2627 | ||
c799eddb | 2628 | tdata->mips_hi16_list = hi->next; |
30ac9238 RS |
2629 | free (hi); |
2630 | } | |
2631 | ||
2632 | return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2633 | input_section, output_bfd, | |
2634 | error_message); | |
2635 | } | |
2636 | ||
2637 | /* A generic howto special_function. This calculates and installs the | |
2638 | relocation itself, thus avoiding the oft-discussed problems in | |
2639 | bfd_perform_relocation and bfd_install_relocation. */ | |
2640 | ||
2641 | bfd_reloc_status_type | |
2642 | _bfd_mips_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2643 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
2644 | asection *input_section, bfd *output_bfd, | |
2645 | char **error_message ATTRIBUTE_UNUSED) | |
2646 | { | |
2647 | bfd_signed_vma val; | |
2648 | bfd_reloc_status_type status; | |
0a1b45a2 | 2649 | bool relocatable; |
30ac9238 RS |
2650 | |
2651 | relocatable = (output_bfd != NULL); | |
2652 | ||
73425813 AM |
2653 | if (!_bfd_mips_reloc_offset_in_range (abfd, input_section, reloc_entry, |
2654 | (relocatable | |
2655 | ? check_inplace : check_std))) | |
30ac9238 RS |
2656 | return bfd_reloc_outofrange; |
2657 | ||
2658 | /* Build up the field adjustment in VAL. */ | |
2659 | val = 0; | |
2660 | if (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0) | |
2661 | { | |
2662 | /* Either we're calculating the final field value or we have a | |
2663 | relocation against a section symbol. Add in the section's | |
2664 | offset or address. */ | |
2665 | val += symbol->section->output_section->vma; | |
2666 | val += symbol->section->output_offset; | |
2667 | } | |
2668 | ||
2669 | if (!relocatable) | |
2670 | { | |
2671 | /* We're calculating the final field value. Add in the symbol's value | |
2672 | and, if pc-relative, subtract the address of the field itself. */ | |
2673 | val += symbol->value; | |
2674 | if (reloc_entry->howto->pc_relative) | |
2675 | { | |
2676 | val -= input_section->output_section->vma; | |
2677 | val -= input_section->output_offset; | |
2678 | val -= reloc_entry->address; | |
2679 | } | |
2680 | } | |
2681 | ||
2682 | /* VAL is now the final adjustment. If we're keeping this relocation | |
2683 | in the output file, and if the relocation uses a separate addend, | |
2684 | we just need to add VAL to that addend. Otherwise we need to add | |
2685 | VAL to the relocation field itself. */ | |
2686 | if (relocatable && !reloc_entry->howto->partial_inplace) | |
2687 | reloc_entry->addend += val; | |
2688 | else | |
2689 | { | |
d6f16593 MR |
2690 | bfd_byte *location = (bfd_byte *) data + reloc_entry->address; |
2691 | ||
30ac9238 RS |
2692 | /* Add in the separate addend, if any. */ |
2693 | val += reloc_entry->addend; | |
2694 | ||
2695 | /* Add VAL to the relocation field. */ | |
0a1b45a2 | 2696 | _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, false, |
df58fc94 | 2697 | location); |
30ac9238 | 2698 | status = _bfd_relocate_contents (reloc_entry->howto, abfd, val, |
d6f16593 | 2699 | location); |
0a1b45a2 | 2700 | _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, false, |
df58fc94 | 2701 | location); |
d6f16593 | 2702 | |
30ac9238 RS |
2703 | if (status != bfd_reloc_ok) |
2704 | return status; | |
2705 | } | |
2706 | ||
2707 | if (relocatable) | |
2708 | reloc_entry->address += input_section->output_offset; | |
b49e97c9 TS |
2709 | |
2710 | return bfd_reloc_ok; | |
2711 | } | |
2712 | \f | |
2713 | /* Swap an entry in a .gptab section. Note that these routines rely | |
2714 | on the equivalence of the two elements of the union. */ | |
2715 | ||
2716 | static void | |
9719ad41 RS |
2717 | bfd_mips_elf32_swap_gptab_in (bfd *abfd, const Elf32_External_gptab *ex, |
2718 | Elf32_gptab *in) | |
b49e97c9 TS |
2719 | { |
2720 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); | |
2721 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); | |
2722 | } | |
2723 | ||
2724 | static void | |
9719ad41 RS |
2725 | bfd_mips_elf32_swap_gptab_out (bfd *abfd, const Elf32_gptab *in, |
2726 | Elf32_External_gptab *ex) | |
b49e97c9 TS |
2727 | { |
2728 | H_PUT_32 (abfd, in->gt_entry.gt_g_value, ex->gt_entry.gt_g_value); | |
2729 | H_PUT_32 (abfd, in->gt_entry.gt_bytes, ex->gt_entry.gt_bytes); | |
2730 | } | |
2731 | ||
2732 | static void | |
9719ad41 RS |
2733 | bfd_elf32_swap_compact_rel_out (bfd *abfd, const Elf32_compact_rel *in, |
2734 | Elf32_External_compact_rel *ex) | |
b49e97c9 TS |
2735 | { |
2736 | H_PUT_32 (abfd, in->id1, ex->id1); | |
2737 | H_PUT_32 (abfd, in->num, ex->num); | |
2738 | H_PUT_32 (abfd, in->id2, ex->id2); | |
2739 | H_PUT_32 (abfd, in->offset, ex->offset); | |
2740 | H_PUT_32 (abfd, in->reserved0, ex->reserved0); | |
2741 | H_PUT_32 (abfd, in->reserved1, ex->reserved1); | |
2742 | } | |
2743 | ||
2744 | static void | |
9719ad41 RS |
2745 | bfd_elf32_swap_crinfo_out (bfd *abfd, const Elf32_crinfo *in, |
2746 | Elf32_External_crinfo *ex) | |
b49e97c9 TS |
2747 | { |
2748 | unsigned long l; | |
2749 | ||
2750 | l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) | |
2751 | | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) | |
2752 | | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) | |
2753 | | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); | |
2754 | H_PUT_32 (abfd, l, ex->info); | |
2755 | H_PUT_32 (abfd, in->konst, ex->konst); | |
2756 | H_PUT_32 (abfd, in->vaddr, ex->vaddr); | |
2757 | } | |
b49e97c9 TS |
2758 | \f |
2759 | /* A .reginfo section holds a single Elf32_RegInfo structure. These | |
2760 | routines swap this structure in and out. They are used outside of | |
2761 | BFD, so they are globally visible. */ | |
2762 | ||
2763 | void | |
9719ad41 RS |
2764 | bfd_mips_elf32_swap_reginfo_in (bfd *abfd, const Elf32_External_RegInfo *ex, |
2765 | Elf32_RegInfo *in) | |
b49e97c9 TS |
2766 | { |
2767 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2768 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2769 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2770 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2771 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2772 | in->ri_gp_value = H_GET_32 (abfd, ex->ri_gp_value); | |
2773 | } | |
2774 | ||
2775 | void | |
9719ad41 RS |
2776 | bfd_mips_elf32_swap_reginfo_out (bfd *abfd, const Elf32_RegInfo *in, |
2777 | Elf32_External_RegInfo *ex) | |
b49e97c9 TS |
2778 | { |
2779 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2780 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2781 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2782 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2783 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2784 | H_PUT_32 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2785 | } | |
2786 | ||
2787 | /* In the 64 bit ABI, the .MIPS.options section holds register | |
2788 | information in an Elf64_Reginfo structure. These routines swap | |
2789 | them in and out. They are globally visible because they are used | |
2790 | outside of BFD. These routines are here so that gas can call them | |
2791 | without worrying about whether the 64 bit ABI has been included. */ | |
2792 | ||
2793 | void | |
9719ad41 RS |
2794 | bfd_mips_elf64_swap_reginfo_in (bfd *abfd, const Elf64_External_RegInfo *ex, |
2795 | Elf64_Internal_RegInfo *in) | |
b49e97c9 TS |
2796 | { |
2797 | in->ri_gprmask = H_GET_32 (abfd, ex->ri_gprmask); | |
2798 | in->ri_pad = H_GET_32 (abfd, ex->ri_pad); | |
2799 | in->ri_cprmask[0] = H_GET_32 (abfd, ex->ri_cprmask[0]); | |
2800 | in->ri_cprmask[1] = H_GET_32 (abfd, ex->ri_cprmask[1]); | |
2801 | in->ri_cprmask[2] = H_GET_32 (abfd, ex->ri_cprmask[2]); | |
2802 | in->ri_cprmask[3] = H_GET_32 (abfd, ex->ri_cprmask[3]); | |
2803 | in->ri_gp_value = H_GET_64 (abfd, ex->ri_gp_value); | |
2804 | } | |
2805 | ||
2806 | void | |
9719ad41 RS |
2807 | bfd_mips_elf64_swap_reginfo_out (bfd *abfd, const Elf64_Internal_RegInfo *in, |
2808 | Elf64_External_RegInfo *ex) | |
b49e97c9 TS |
2809 | { |
2810 | H_PUT_32 (abfd, in->ri_gprmask, ex->ri_gprmask); | |
2811 | H_PUT_32 (abfd, in->ri_pad, ex->ri_pad); | |
2812 | H_PUT_32 (abfd, in->ri_cprmask[0], ex->ri_cprmask[0]); | |
2813 | H_PUT_32 (abfd, in->ri_cprmask[1], ex->ri_cprmask[1]); | |
2814 | H_PUT_32 (abfd, in->ri_cprmask[2], ex->ri_cprmask[2]); | |
2815 | H_PUT_32 (abfd, in->ri_cprmask[3], ex->ri_cprmask[3]); | |
2816 | H_PUT_64 (abfd, in->ri_gp_value, ex->ri_gp_value); | |
2817 | } | |
2818 | ||
2819 | /* Swap in an options header. */ | |
2820 | ||
2821 | void | |
9719ad41 RS |
2822 | bfd_mips_elf_swap_options_in (bfd *abfd, const Elf_External_Options *ex, |
2823 | Elf_Internal_Options *in) | |
b49e97c9 TS |
2824 | { |
2825 | in->kind = H_GET_8 (abfd, ex->kind); | |
2826 | in->size = H_GET_8 (abfd, ex->size); | |
2827 | in->section = H_GET_16 (abfd, ex->section); | |
2828 | in->info = H_GET_32 (abfd, ex->info); | |
2829 | } | |
2830 | ||
2831 | /* Swap out an options header. */ | |
2832 | ||
2833 | void | |
9719ad41 RS |
2834 | bfd_mips_elf_swap_options_out (bfd *abfd, const Elf_Internal_Options *in, |
2835 | Elf_External_Options *ex) | |
b49e97c9 TS |
2836 | { |
2837 | H_PUT_8 (abfd, in->kind, ex->kind); | |
2838 | H_PUT_8 (abfd, in->size, ex->size); | |
2839 | H_PUT_16 (abfd, in->section, ex->section); | |
2840 | H_PUT_32 (abfd, in->info, ex->info); | |
2841 | } | |
351cdf24 MF |
2842 | |
2843 | /* Swap in an abiflags structure. */ | |
2844 | ||
2845 | void | |
2846 | bfd_mips_elf_swap_abiflags_v0_in (bfd *abfd, | |
2847 | const Elf_External_ABIFlags_v0 *ex, | |
2848 | Elf_Internal_ABIFlags_v0 *in) | |
2849 | { | |
2850 | in->version = H_GET_16 (abfd, ex->version); | |
2851 | in->isa_level = H_GET_8 (abfd, ex->isa_level); | |
2852 | in->isa_rev = H_GET_8 (abfd, ex->isa_rev); | |
2853 | in->gpr_size = H_GET_8 (abfd, ex->gpr_size); | |
2854 | in->cpr1_size = H_GET_8 (abfd, ex->cpr1_size); | |
2855 | in->cpr2_size = H_GET_8 (abfd, ex->cpr2_size); | |
2856 | in->fp_abi = H_GET_8 (abfd, ex->fp_abi); | |
2857 | in->isa_ext = H_GET_32 (abfd, ex->isa_ext); | |
2858 | in->ases = H_GET_32 (abfd, ex->ases); | |
2859 | in->flags1 = H_GET_32 (abfd, ex->flags1); | |
2860 | in->flags2 = H_GET_32 (abfd, ex->flags2); | |
2861 | } | |
2862 | ||
2863 | /* Swap out an abiflags structure. */ | |
2864 | ||
2865 | void | |
2866 | bfd_mips_elf_swap_abiflags_v0_out (bfd *abfd, | |
2867 | const Elf_Internal_ABIFlags_v0 *in, | |
2868 | Elf_External_ABIFlags_v0 *ex) | |
2869 | { | |
2870 | H_PUT_16 (abfd, in->version, ex->version); | |
2871 | H_PUT_8 (abfd, in->isa_level, ex->isa_level); | |
2872 | H_PUT_8 (abfd, in->isa_rev, ex->isa_rev); | |
2873 | H_PUT_8 (abfd, in->gpr_size, ex->gpr_size); | |
2874 | H_PUT_8 (abfd, in->cpr1_size, ex->cpr1_size); | |
2875 | H_PUT_8 (abfd, in->cpr2_size, ex->cpr2_size); | |
2876 | H_PUT_8 (abfd, in->fp_abi, ex->fp_abi); | |
2877 | H_PUT_32 (abfd, in->isa_ext, ex->isa_ext); | |
2878 | H_PUT_32 (abfd, in->ases, ex->ases); | |
2879 | H_PUT_32 (abfd, in->flags1, ex->flags1); | |
2880 | H_PUT_32 (abfd, in->flags2, ex->flags2); | |
2881 | } | |
b49e97c9 TS |
2882 | \f |
2883 | /* This function is called via qsort() to sort the dynamic relocation | |
2884 | entries by increasing r_symndx value. */ | |
2885 | ||
2886 | static int | |
9719ad41 | 2887 | sort_dynamic_relocs (const void *arg1, const void *arg2) |
b49e97c9 | 2888 | { |
947216bf AM |
2889 | Elf_Internal_Rela int_reloc1; |
2890 | Elf_Internal_Rela int_reloc2; | |
6870500c | 2891 | int diff; |
b49e97c9 | 2892 | |
947216bf AM |
2893 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1); |
2894 | bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2); | |
b49e97c9 | 2895 | |
6870500c RS |
2896 | diff = ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info); |
2897 | if (diff != 0) | |
2898 | return diff; | |
2899 | ||
2900 | if (int_reloc1.r_offset < int_reloc2.r_offset) | |
2901 | return -1; | |
2902 | if (int_reloc1.r_offset > int_reloc2.r_offset) | |
2903 | return 1; | |
2904 | return 0; | |
b49e97c9 TS |
2905 | } |
2906 | ||
f4416af6 AO |
2907 | /* Like sort_dynamic_relocs, but used for elf64 relocations. */ |
2908 | ||
2909 | static int | |
7e3102a7 AM |
2910 | sort_dynamic_relocs_64 (const void *arg1 ATTRIBUTE_UNUSED, |
2911 | const void *arg2 ATTRIBUTE_UNUSED) | |
f4416af6 | 2912 | { |
7e3102a7 | 2913 | #ifdef BFD64 |
f4416af6 AO |
2914 | Elf_Internal_Rela int_reloc1[3]; |
2915 | Elf_Internal_Rela int_reloc2[3]; | |
2916 | ||
2917 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2918 | (reldyn_sorting_bfd, arg1, int_reloc1); | |
2919 | (*get_elf_backend_data (reldyn_sorting_bfd)->s->swap_reloc_in) | |
2920 | (reldyn_sorting_bfd, arg2, int_reloc2); | |
2921 | ||
6870500c RS |
2922 | if (ELF64_R_SYM (int_reloc1[0].r_info) < ELF64_R_SYM (int_reloc2[0].r_info)) |
2923 | return -1; | |
2924 | if (ELF64_R_SYM (int_reloc1[0].r_info) > ELF64_R_SYM (int_reloc2[0].r_info)) | |
2925 | return 1; | |
2926 | ||
2927 | if (int_reloc1[0].r_offset < int_reloc2[0].r_offset) | |
2928 | return -1; | |
2929 | if (int_reloc1[0].r_offset > int_reloc2[0].r_offset) | |
2930 | return 1; | |
2931 | return 0; | |
7e3102a7 AM |
2932 | #else |
2933 | abort (); | |
2934 | #endif | |
f4416af6 AO |
2935 | } |
2936 | ||
2937 | ||
b49e97c9 TS |
2938 | /* This routine is used to write out ECOFF debugging external symbol |
2939 | information. It is called via mips_elf_link_hash_traverse. The | |
2940 | ECOFF external symbol information must match the ELF external | |
2941 | symbol information. Unfortunately, at this point we don't know | |
2942 | whether a symbol is required by reloc information, so the two | |
2943 | tables may wind up being different. We must sort out the external | |
2944 | symbol information before we can set the final size of the .mdebug | |
2945 | section, and we must set the size of the .mdebug section before we | |
2946 | can relocate any sections, and we can't know which symbols are | |
2947 | required by relocation until we relocate the sections. | |
2948 | Fortunately, it is relatively unlikely that any symbol will be | |
2949 | stripped but required by a reloc. In particular, it can not happen | |
2950 | when generating a final executable. */ | |
2951 | ||
0a1b45a2 | 2952 | static bool |
9719ad41 | 2953 | mips_elf_output_extsym (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 2954 | { |
9719ad41 | 2955 | struct extsym_info *einfo = data; |
0a1b45a2 | 2956 | bool strip; |
b49e97c9 TS |
2957 | asection *sec, *output_section; |
2958 | ||
b49e97c9 | 2959 | if (h->root.indx == -2) |
0a1b45a2 | 2960 | strip = false; |
f5385ebf | 2961 | else if ((h->root.def_dynamic |
77cfaee6 AM |
2962 | || h->root.ref_dynamic |
2963 | || h->root.type == bfd_link_hash_new) | |
f5385ebf AM |
2964 | && !h->root.def_regular |
2965 | && !h->root.ref_regular) | |
0a1b45a2 | 2966 | strip = true; |
b49e97c9 TS |
2967 | else if (einfo->info->strip == strip_all |
2968 | || (einfo->info->strip == strip_some | |
2969 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2970 | h->root.root.root.string, | |
0a1b45a2 AM |
2971 | false, false) == NULL)) |
2972 | strip = true; | |
b49e97c9 | 2973 | else |
0a1b45a2 | 2974 | strip = false; |
b49e97c9 TS |
2975 | |
2976 | if (strip) | |
0a1b45a2 | 2977 | return true; |
b49e97c9 TS |
2978 | |
2979 | if (h->esym.ifd == -2) | |
2980 | { | |
2981 | h->esym.jmptbl = 0; | |
2982 | h->esym.cobol_main = 0; | |
2983 | h->esym.weakext = 0; | |
2984 | h->esym.reserved = 0; | |
2985 | h->esym.ifd = ifdNil; | |
2986 | h->esym.asym.value = 0; | |
2987 | h->esym.asym.st = stGlobal; | |
2988 | ||
2989 | if (h->root.root.type == bfd_link_hash_undefined | |
2990 | || h->root.root.type == bfd_link_hash_undefweak) | |
2991 | { | |
2992 | const char *name; | |
2993 | ||
2994 | /* Use undefined class. Also, set class and type for some | |
07d6d2b8 | 2995 | special symbols. */ |
b49e97c9 TS |
2996 | name = h->root.root.root.string; |
2997 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
2998 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
2999 | { | |
3000 | h->esym.asym.sc = scData; | |
3001 | h->esym.asym.st = stLabel; | |
3002 | h->esym.asym.value = 0; | |
3003 | } | |
3004 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
3005 | { | |
3006 | h->esym.asym.sc = scAbs; | |
3007 | h->esym.asym.st = stLabel; | |
3008 | h->esym.asym.value = | |
3009 | mips_elf_hash_table (einfo->info)->procedure_count; | |
3010 | } | |
b49e97c9 TS |
3011 | else |
3012 | h->esym.asym.sc = scUndefined; | |
3013 | } | |
3014 | else if (h->root.root.type != bfd_link_hash_defined | |
3015 | && h->root.root.type != bfd_link_hash_defweak) | |
3016 | h->esym.asym.sc = scAbs; | |
3017 | else | |
3018 | { | |
3019 | const char *name; | |
3020 | ||
3021 | sec = h->root.root.u.def.section; | |
3022 | output_section = sec->output_section; | |
3023 | ||
3024 | /* When making a shared library and symbol h is the one from | |
3025 | the another shared library, OUTPUT_SECTION may be null. */ | |
3026 | if (output_section == NULL) | |
3027 | h->esym.asym.sc = scUndefined; | |
3028 | else | |
3029 | { | |
fd361982 | 3030 | name = bfd_section_name (output_section); |
b49e97c9 TS |
3031 | |
3032 | if (strcmp (name, ".text") == 0) | |
3033 | h->esym.asym.sc = scText; | |
3034 | else if (strcmp (name, ".data") == 0) | |
3035 | h->esym.asym.sc = scData; | |
3036 | else if (strcmp (name, ".sdata") == 0) | |
3037 | h->esym.asym.sc = scSData; | |
3038 | else if (strcmp (name, ".rodata") == 0 | |
3039 | || strcmp (name, ".rdata") == 0) | |
3040 | h->esym.asym.sc = scRData; | |
3041 | else if (strcmp (name, ".bss") == 0) | |
3042 | h->esym.asym.sc = scBss; | |
3043 | else if (strcmp (name, ".sbss") == 0) | |
3044 | h->esym.asym.sc = scSBss; | |
3045 | else if (strcmp (name, ".init") == 0) | |
3046 | h->esym.asym.sc = scInit; | |
3047 | else if (strcmp (name, ".fini") == 0) | |
3048 | h->esym.asym.sc = scFini; | |
3049 | else | |
3050 | h->esym.asym.sc = scAbs; | |
3051 | } | |
3052 | } | |
3053 | ||
3054 | h->esym.asym.reserved = 0; | |
3055 | h->esym.asym.index = indexNil; | |
3056 | } | |
3057 | ||
3058 | if (h->root.root.type == bfd_link_hash_common) | |
3059 | h->esym.asym.value = h->root.root.u.c.size; | |
3060 | else if (h->root.root.type == bfd_link_hash_defined | |
3061 | || h->root.root.type == bfd_link_hash_defweak) | |
3062 | { | |
3063 | if (h->esym.asym.sc == scCommon) | |
3064 | h->esym.asym.sc = scBss; | |
3065 | else if (h->esym.asym.sc == scSCommon) | |
3066 | h->esym.asym.sc = scSBss; | |
3067 | ||
3068 | sec = h->root.root.u.def.section; | |
3069 | output_section = sec->output_section; | |
3070 | if (output_section != NULL) | |
3071 | h->esym.asym.value = (h->root.root.u.def.value | |
3072 | + sec->output_offset | |
3073 | + output_section->vma); | |
3074 | else | |
3075 | h->esym.asym.value = 0; | |
3076 | } | |
33bb52fb | 3077 | else |
b49e97c9 TS |
3078 | { |
3079 | struct mips_elf_link_hash_entry *hd = h; | |
b49e97c9 TS |
3080 | |
3081 | while (hd->root.root.type == bfd_link_hash_indirect) | |
33bb52fb | 3082 | hd = (struct mips_elf_link_hash_entry *)h->root.root.u.i.link; |
b49e97c9 | 3083 | |
33bb52fb | 3084 | if (hd->needs_lazy_stub) |
b49e97c9 | 3085 | { |
1bbce132 MR |
3086 | BFD_ASSERT (hd->root.plt.plist != NULL); |
3087 | BFD_ASSERT (hd->root.plt.plist->stub_offset != MINUS_ONE); | |
b49e97c9 TS |
3088 | /* Set type and value for a symbol with a function stub. */ |
3089 | h->esym.asym.st = stProc; | |
3090 | sec = hd->root.root.u.def.section; | |
3091 | if (sec == NULL) | |
3092 | h->esym.asym.value = 0; | |
3093 | else | |
3094 | { | |
3095 | output_section = sec->output_section; | |
3096 | if (output_section != NULL) | |
1bbce132 | 3097 | h->esym.asym.value = (hd->root.plt.plist->stub_offset |
b49e97c9 TS |
3098 | + sec->output_offset |
3099 | + output_section->vma); | |
3100 | else | |
3101 | h->esym.asym.value = 0; | |
3102 | } | |
b49e97c9 TS |
3103 | } |
3104 | } | |
3105 | ||
3106 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
3107 | h->root.root.root.string, | |
3108 | &h->esym)) | |
3109 | { | |
0a1b45a2 AM |
3110 | einfo->failed = true; |
3111 | return false; | |
b49e97c9 TS |
3112 | } |
3113 | ||
0a1b45a2 | 3114 | return true; |
b49e97c9 TS |
3115 | } |
3116 | ||
3117 | /* A comparison routine used to sort .gptab entries. */ | |
3118 | ||
3119 | static int | |
9719ad41 | 3120 | gptab_compare (const void *p1, const void *p2) |
b49e97c9 | 3121 | { |
9719ad41 RS |
3122 | const Elf32_gptab *a1 = p1; |
3123 | const Elf32_gptab *a2 = p2; | |
b49e97c9 TS |
3124 | |
3125 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; | |
3126 | } | |
3127 | \f | |
b15e6682 | 3128 | /* Functions to manage the got entry hash table. */ |
f4416af6 AO |
3129 | |
3130 | /* Use all 64 bits of a bfd_vma for the computation of a 32-bit | |
3131 | hash number. */ | |
3132 | ||
42eec46f | 3133 | static inline hashval_t |
9719ad41 | 3134 | mips_elf_hash_bfd_vma (bfd_vma addr) |
f4416af6 AO |
3135 | { |
3136 | #ifdef BFD64 | |
3137 | return addr + (addr >> 32); | |
3138 | #else | |
3139 | return addr; | |
3140 | #endif | |
3141 | } | |
3142 | ||
f4416af6 | 3143 | static hashval_t |
d9bf376d | 3144 | mips_elf_got_entry_hash (const void *entry_) |
f4416af6 AO |
3145 | { |
3146 | const struct mips_got_entry *entry = (struct mips_got_entry *)entry_; | |
3147 | ||
e641e783 | 3148 | return (entry->symndx |
9ab066b4 RS |
3149 | + ((entry->tls_type == GOT_TLS_LDM) << 18) |
3150 | + (entry->tls_type == GOT_TLS_LDM ? 0 | |
e641e783 RS |
3151 | : !entry->abfd ? mips_elf_hash_bfd_vma (entry->d.address) |
3152 | : entry->symndx >= 0 ? (entry->abfd->id | |
3153 | + mips_elf_hash_bfd_vma (entry->d.addend)) | |
3154 | : entry->d.h->root.root.root.hash)); | |
f4416af6 AO |
3155 | } |
3156 | ||
3157 | static int | |
3dff0dd1 | 3158 | mips_elf_got_entry_eq (const void *entry1, const void *entry2) |
f4416af6 AO |
3159 | { |
3160 | const struct mips_got_entry *e1 = (struct mips_got_entry *)entry1; | |
3161 | const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2; | |
3162 | ||
e641e783 | 3163 | return (e1->symndx == e2->symndx |
9ab066b4 | 3164 | && e1->tls_type == e2->tls_type |
0a1b45a2 | 3165 | && (e1->tls_type == GOT_TLS_LDM ? true |
e641e783 RS |
3166 | : !e1->abfd ? !e2->abfd && e1->d.address == e2->d.address |
3167 | : e1->symndx >= 0 ? (e1->abfd == e2->abfd | |
3168 | && e1->d.addend == e2->d.addend) | |
3169 | : e2->abfd && e1->d.h == e2->d.h)); | |
b15e6682 | 3170 | } |
c224138d | 3171 | |
13db6b44 RS |
3172 | static hashval_t |
3173 | mips_got_page_ref_hash (const void *ref_) | |
3174 | { | |
3175 | const struct mips_got_page_ref *ref; | |
3176 | ||
3177 | ref = (const struct mips_got_page_ref *) ref_; | |
3178 | return ((ref->symndx >= 0 | |
3179 | ? (hashval_t) (ref->u.abfd->id + ref->symndx) | |
3180 | : ref->u.h->root.root.root.hash) | |
3181 | + mips_elf_hash_bfd_vma (ref->addend)); | |
3182 | } | |
3183 | ||
3184 | static int | |
3185 | mips_got_page_ref_eq (const void *ref1_, const void *ref2_) | |
3186 | { | |
3187 | const struct mips_got_page_ref *ref1, *ref2; | |
3188 | ||
3189 | ref1 = (const struct mips_got_page_ref *) ref1_; | |
3190 | ref2 = (const struct mips_got_page_ref *) ref2_; | |
3191 | return (ref1->symndx == ref2->symndx | |
3192 | && (ref1->symndx < 0 | |
3193 | ? ref1->u.h == ref2->u.h | |
3194 | : ref1->u.abfd == ref2->u.abfd) | |
3195 | && ref1->addend == ref2->addend); | |
3196 | } | |
3197 | ||
c224138d RS |
3198 | static hashval_t |
3199 | mips_got_page_entry_hash (const void *entry_) | |
3200 | { | |
3201 | const struct mips_got_page_entry *entry; | |
3202 | ||
3203 | entry = (const struct mips_got_page_entry *) entry_; | |
13db6b44 | 3204 | return entry->sec->id; |
c224138d RS |
3205 | } |
3206 | ||
3207 | static int | |
3208 | mips_got_page_entry_eq (const void *entry1_, const void *entry2_) | |
3209 | { | |
3210 | const struct mips_got_page_entry *entry1, *entry2; | |
3211 | ||
3212 | entry1 = (const struct mips_got_page_entry *) entry1_; | |
3213 | entry2 = (const struct mips_got_page_entry *) entry2_; | |
13db6b44 | 3214 | return entry1->sec == entry2->sec; |
c224138d | 3215 | } |
b15e6682 | 3216 | \f |
3dff0dd1 | 3217 | /* Create and return a new mips_got_info structure. */ |
5334aa52 RS |
3218 | |
3219 | static struct mips_got_info * | |
3dff0dd1 | 3220 | mips_elf_create_got_info (bfd *abfd) |
5334aa52 RS |
3221 | { |
3222 | struct mips_got_info *g; | |
3223 | ||
3224 | g = bfd_zalloc (abfd, sizeof (struct mips_got_info)); | |
3225 | if (g == NULL) | |
3226 | return NULL; | |
3227 | ||
3dff0dd1 RS |
3228 | g->got_entries = htab_try_create (1, mips_elf_got_entry_hash, |
3229 | mips_elf_got_entry_eq, NULL); | |
5334aa52 RS |
3230 | if (g->got_entries == NULL) |
3231 | return NULL; | |
3232 | ||
13db6b44 RS |
3233 | g->got_page_refs = htab_try_create (1, mips_got_page_ref_hash, |
3234 | mips_got_page_ref_eq, NULL); | |
3235 | if (g->got_page_refs == NULL) | |
5334aa52 RS |
3236 | return NULL; |
3237 | ||
3238 | return g; | |
3239 | } | |
3240 | ||
ee227692 RS |
3241 | /* Return the GOT info for input bfd ABFD, trying to create a new one if |
3242 | CREATE_P and if ABFD doesn't already have a GOT. */ | |
3243 | ||
3244 | static struct mips_got_info * | |
0a1b45a2 | 3245 | mips_elf_bfd_got (bfd *abfd, bool create_p) |
ee227692 RS |
3246 | { |
3247 | struct mips_elf_obj_tdata *tdata; | |
3248 | ||
3249 | if (!is_mips_elf (abfd)) | |
3250 | return NULL; | |
3251 | ||
3252 | tdata = mips_elf_tdata (abfd); | |
3253 | if (!tdata->got && create_p) | |
3dff0dd1 | 3254 | tdata->got = mips_elf_create_got_info (abfd); |
ee227692 RS |
3255 | return tdata->got; |
3256 | } | |
3257 | ||
d7206569 RS |
3258 | /* Record that ABFD should use output GOT G. */ |
3259 | ||
3260 | static void | |
3261 | mips_elf_replace_bfd_got (bfd *abfd, struct mips_got_info *g) | |
3262 | { | |
3263 | struct mips_elf_obj_tdata *tdata; | |
3264 | ||
3265 | BFD_ASSERT (is_mips_elf (abfd)); | |
3266 | tdata = mips_elf_tdata (abfd); | |
3267 | if (tdata->got) | |
3268 | { | |
3269 | /* The GOT structure itself and the hash table entries are | |
3270 | allocated to a bfd, but the hash tables aren't. */ | |
3271 | htab_delete (tdata->got->got_entries); | |
13db6b44 RS |
3272 | htab_delete (tdata->got->got_page_refs); |
3273 | if (tdata->got->got_page_entries) | |
3274 | htab_delete (tdata->got->got_page_entries); | |
d7206569 RS |
3275 | } |
3276 | tdata->got = g; | |
3277 | } | |
3278 | ||
0a44bf69 RS |
3279 | /* Return the dynamic relocation section. If it doesn't exist, try to |
3280 | create a new it if CREATE_P, otherwise return NULL. Also return NULL | |
3281 | if creation fails. */ | |
f4416af6 AO |
3282 | |
3283 | static asection * | |
0a1b45a2 | 3284 | mips_elf_rel_dyn_section (struct bfd_link_info *info, bool create_p) |
f4416af6 | 3285 | { |
0a44bf69 | 3286 | const char *dname; |
f4416af6 | 3287 | asection *sreloc; |
0a44bf69 | 3288 | bfd *dynobj; |
f4416af6 | 3289 | |
0a44bf69 RS |
3290 | dname = MIPS_ELF_REL_DYN_NAME (info); |
3291 | dynobj = elf_hash_table (info)->dynobj; | |
3d4d4302 | 3292 | sreloc = bfd_get_linker_section (dynobj, dname); |
f4416af6 AO |
3293 | if (sreloc == NULL && create_p) |
3294 | { | |
3d4d4302 AM |
3295 | sreloc = bfd_make_section_anyway_with_flags (dynobj, dname, |
3296 | (SEC_ALLOC | |
3297 | | SEC_LOAD | |
3298 | | SEC_HAS_CONTENTS | |
3299 | | SEC_IN_MEMORY | |
3300 | | SEC_LINKER_CREATED | |
3301 | | SEC_READONLY)); | |
f4416af6 | 3302 | if (sreloc == NULL |
fd361982 AM |
3303 | || !bfd_set_section_alignment (sreloc, |
3304 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) | |
f4416af6 AO |
3305 | return NULL; |
3306 | } | |
3307 | return sreloc; | |
3308 | } | |
3309 | ||
e641e783 RS |
3310 | /* Return the GOT_TLS_* type required by relocation type R_TYPE. */ |
3311 | ||
3312 | static int | |
3313 | mips_elf_reloc_tls_type (unsigned int r_type) | |
3314 | { | |
3315 | if (tls_gd_reloc_p (r_type)) | |
3316 | return GOT_TLS_GD; | |
3317 | ||
3318 | if (tls_ldm_reloc_p (r_type)) | |
3319 | return GOT_TLS_LDM; | |
3320 | ||
3321 | if (tls_gottprel_reloc_p (r_type)) | |
3322 | return GOT_TLS_IE; | |
3323 | ||
9ab066b4 | 3324 | return GOT_TLS_NONE; |
e641e783 RS |
3325 | } |
3326 | ||
3327 | /* Return the number of GOT slots needed for GOT TLS type TYPE. */ | |
3328 | ||
3329 | static int | |
3330 | mips_tls_got_entries (unsigned int type) | |
3331 | { | |
3332 | switch (type) | |
3333 | { | |
3334 | case GOT_TLS_GD: | |
3335 | case GOT_TLS_LDM: | |
3336 | return 2; | |
3337 | ||
3338 | case GOT_TLS_IE: | |
3339 | return 1; | |
3340 | ||
9ab066b4 | 3341 | case GOT_TLS_NONE: |
e641e783 RS |
3342 | return 0; |
3343 | } | |
3344 | abort (); | |
3345 | } | |
3346 | ||
0f20cc35 DJ |
3347 | /* Count the number of relocations needed for a TLS GOT entry, with |
3348 | access types from TLS_TYPE, and symbol H (or a local symbol if H | |
3349 | is NULL). */ | |
3350 | ||
3351 | static int | |
3352 | mips_tls_got_relocs (struct bfd_link_info *info, unsigned char tls_type, | |
3353 | struct elf_link_hash_entry *h) | |
3354 | { | |
3355 | int indx = 0; | |
0a1b45a2 AM |
3356 | bool need_relocs = false; |
3357 | bool dyn = elf_hash_table (info)->dynamic_sections_created; | |
0f20cc35 | 3358 | |
1cb83cac MR |
3359 | if (h != NULL |
3360 | && h->dynindx != -1 | |
3361 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) | |
3362 | && (bfd_link_dll (info) || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
0f20cc35 DJ |
3363 | indx = h->dynindx; |
3364 | ||
9143e72c | 3365 | if ((bfd_link_dll (info) || indx != 0) |
0f20cc35 DJ |
3366 | && (h == NULL |
3367 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3368 | || h->root.type != bfd_link_hash_undefweak)) | |
0a1b45a2 | 3369 | need_relocs = true; |
0f20cc35 DJ |
3370 | |
3371 | if (!need_relocs) | |
e641e783 | 3372 | return 0; |
0f20cc35 | 3373 | |
9ab066b4 | 3374 | switch (tls_type) |
0f20cc35 | 3375 | { |
e641e783 RS |
3376 | case GOT_TLS_GD: |
3377 | return indx != 0 ? 2 : 1; | |
0f20cc35 | 3378 | |
e641e783 RS |
3379 | case GOT_TLS_IE: |
3380 | return 1; | |
0f20cc35 | 3381 | |
e641e783 | 3382 | case GOT_TLS_LDM: |
9143e72c | 3383 | return bfd_link_dll (info) ? 1 : 0; |
0f20cc35 | 3384 | |
e641e783 RS |
3385 | default: |
3386 | return 0; | |
3387 | } | |
0f20cc35 DJ |
3388 | } |
3389 | ||
ab361d49 RS |
3390 | /* Add the number of GOT entries and TLS relocations required by ENTRY |
3391 | to G. */ | |
0f20cc35 | 3392 | |
ab361d49 RS |
3393 | static void |
3394 | mips_elf_count_got_entry (struct bfd_link_info *info, | |
3395 | struct mips_got_info *g, | |
3396 | struct mips_got_entry *entry) | |
0f20cc35 | 3397 | { |
9ab066b4 | 3398 | if (entry->tls_type) |
ab361d49 | 3399 | { |
9ab066b4 RS |
3400 | g->tls_gotno += mips_tls_got_entries (entry->tls_type); |
3401 | g->relocs += mips_tls_got_relocs (info, entry->tls_type, | |
ab361d49 RS |
3402 | entry->symndx < 0 |
3403 | ? &entry->d.h->root : NULL); | |
3404 | } | |
3405 | else if (entry->symndx >= 0 || entry->d.h->global_got_area == GGA_NONE) | |
3406 | g->local_gotno += 1; | |
3407 | else | |
3408 | g->global_gotno += 1; | |
0f20cc35 DJ |
3409 | } |
3410 | ||
0f20cc35 DJ |
3411 | /* Output a simple dynamic relocation into SRELOC. */ |
3412 | ||
3413 | static void | |
3414 | mips_elf_output_dynamic_relocation (bfd *output_bfd, | |
3415 | asection *sreloc, | |
861fb55a | 3416 | unsigned long reloc_index, |
0f20cc35 DJ |
3417 | unsigned long indx, |
3418 | int r_type, | |
3419 | bfd_vma offset) | |
3420 | { | |
3421 | Elf_Internal_Rela rel[3]; | |
3422 | ||
3423 | memset (rel, 0, sizeof (rel)); | |
3424 | ||
3425 | rel[0].r_info = ELF_R_INFO (output_bfd, indx, r_type); | |
3426 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
3427 | ||
3428 | if (ABI_64_P (output_bfd)) | |
3429 | { | |
3430 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
3431 | (output_bfd, &rel[0], | |
3432 | (sreloc->contents | |
861fb55a | 3433 | + reloc_index * sizeof (Elf64_Mips_External_Rel))); |
0f20cc35 DJ |
3434 | } |
3435 | else | |
3436 | bfd_elf32_swap_reloc_out | |
3437 | (output_bfd, &rel[0], | |
3438 | (sreloc->contents | |
861fb55a | 3439 | + reloc_index * sizeof (Elf32_External_Rel))); |
0f20cc35 DJ |
3440 | } |
3441 | ||
3442 | /* Initialize a set of TLS GOT entries for one symbol. */ | |
3443 | ||
3444 | static void | |
9ab066b4 RS |
3445 | mips_elf_initialize_tls_slots (bfd *abfd, struct bfd_link_info *info, |
3446 | struct mips_got_entry *entry, | |
0f20cc35 DJ |
3447 | struct mips_elf_link_hash_entry *h, |
3448 | bfd_vma value) | |
3449 | { | |
0a1b45a2 | 3450 | bool dyn = elf_hash_table (info)->dynamic_sections_created; |
23cc69b6 | 3451 | struct mips_elf_link_hash_table *htab; |
0f20cc35 DJ |
3452 | int indx; |
3453 | asection *sreloc, *sgot; | |
9ab066b4 | 3454 | bfd_vma got_offset, got_offset2; |
0a1b45a2 | 3455 | bool need_relocs = false; |
0f20cc35 | 3456 | |
23cc69b6 | 3457 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3458 | if (htab == NULL) |
3459 | return; | |
3460 | ||
ce558b89 | 3461 | sgot = htab->root.sgot; |
0f20cc35 DJ |
3462 | |
3463 | indx = 0; | |
1cb83cac MR |
3464 | if (h != NULL |
3465 | && h->root.dynindx != -1 | |
3466 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), &h->root) | |
3467 | && (bfd_link_dll (info) || !SYMBOL_REFERENCES_LOCAL (info, &h->root))) | |
3468 | indx = h->root.dynindx; | |
0f20cc35 | 3469 | |
9ab066b4 | 3470 | if (entry->tls_initialized) |
0f20cc35 DJ |
3471 | return; |
3472 | ||
9143e72c | 3473 | if ((bfd_link_dll (info) || indx != 0) |
0f20cc35 DJ |
3474 | && (h == NULL |
3475 | || ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT | |
3476 | || h->root.type != bfd_link_hash_undefweak)) | |
0a1b45a2 | 3477 | need_relocs = true; |
0f20cc35 DJ |
3478 | |
3479 | /* MINUS_ONE means the symbol is not defined in this object. It may not | |
3480 | be defined at all; assume that the value doesn't matter in that | |
3481 | case. Otherwise complain if we would use the value. */ | |
3482 | BFD_ASSERT (value != MINUS_ONE || (indx != 0 && need_relocs) | |
3483 | || h->root.root.type == bfd_link_hash_undefweak); | |
3484 | ||
3485 | /* Emit necessary relocations. */ | |
0a1b45a2 | 3486 | sreloc = mips_elf_rel_dyn_section (info, false); |
9ab066b4 | 3487 | got_offset = entry->gotidx; |
0f20cc35 | 3488 | |
9ab066b4 | 3489 | switch (entry->tls_type) |
0f20cc35 | 3490 | { |
e641e783 RS |
3491 | case GOT_TLS_GD: |
3492 | /* General Dynamic. */ | |
3493 | got_offset2 = got_offset + MIPS_ELF_GOT_SIZE (abfd); | |
0f20cc35 DJ |
3494 | |
3495 | if (need_relocs) | |
3496 | { | |
3497 | mips_elf_output_dynamic_relocation | |
861fb55a | 3498 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3499 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
e641e783 | 3500 | sgot->output_offset + sgot->output_section->vma + got_offset); |
0f20cc35 DJ |
3501 | |
3502 | if (indx) | |
3503 | mips_elf_output_dynamic_relocation | |
861fb55a | 3504 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3505 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPREL64 : R_MIPS_TLS_DTPREL32, |
e641e783 | 3506 | sgot->output_offset + sgot->output_section->vma + got_offset2); |
0f20cc35 DJ |
3507 | else |
3508 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), | |
e641e783 | 3509 | sgot->contents + got_offset2); |
0f20cc35 DJ |
3510 | } |
3511 | else | |
3512 | { | |
3513 | MIPS_ELF_PUT_WORD (abfd, 1, | |
e641e783 | 3514 | sgot->contents + got_offset); |
0f20cc35 | 3515 | MIPS_ELF_PUT_WORD (abfd, value - dtprel_base (info), |
e641e783 | 3516 | sgot->contents + got_offset2); |
0f20cc35 | 3517 | } |
e641e783 | 3518 | break; |
0f20cc35 | 3519 | |
e641e783 RS |
3520 | case GOT_TLS_IE: |
3521 | /* Initial Exec model. */ | |
0f20cc35 DJ |
3522 | if (need_relocs) |
3523 | { | |
3524 | if (indx == 0) | |
3525 | MIPS_ELF_PUT_WORD (abfd, value - elf_hash_table (info)->tls_sec->vma, | |
e641e783 | 3526 | sgot->contents + got_offset); |
0f20cc35 DJ |
3527 | else |
3528 | MIPS_ELF_PUT_WORD (abfd, 0, | |
e641e783 | 3529 | sgot->contents + got_offset); |
0f20cc35 DJ |
3530 | |
3531 | mips_elf_output_dynamic_relocation | |
861fb55a | 3532 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 | 3533 | ABI_64_P (abfd) ? R_MIPS_TLS_TPREL64 : R_MIPS_TLS_TPREL32, |
e641e783 | 3534 | sgot->output_offset + sgot->output_section->vma + got_offset); |
0f20cc35 DJ |
3535 | } |
3536 | else | |
3537 | MIPS_ELF_PUT_WORD (abfd, value - tprel_base (info), | |
e641e783 RS |
3538 | sgot->contents + got_offset); |
3539 | break; | |
0f20cc35 | 3540 | |
e641e783 | 3541 | case GOT_TLS_LDM: |
0f20cc35 DJ |
3542 | /* The initial offset is zero, and the LD offsets will include the |
3543 | bias by DTP_OFFSET. */ | |
3544 | MIPS_ELF_PUT_WORD (abfd, 0, | |
3545 | sgot->contents + got_offset | |
3546 | + MIPS_ELF_GOT_SIZE (abfd)); | |
3547 | ||
9143e72c | 3548 | if (!bfd_link_dll (info)) |
0f20cc35 DJ |
3549 | MIPS_ELF_PUT_WORD (abfd, 1, |
3550 | sgot->contents + got_offset); | |
3551 | else | |
3552 | mips_elf_output_dynamic_relocation | |
861fb55a | 3553 | (abfd, sreloc, sreloc->reloc_count++, indx, |
0f20cc35 DJ |
3554 | ABI_64_P (abfd) ? R_MIPS_TLS_DTPMOD64 : R_MIPS_TLS_DTPMOD32, |
3555 | sgot->output_offset + sgot->output_section->vma + got_offset); | |
e641e783 RS |
3556 | break; |
3557 | ||
3558 | default: | |
3559 | abort (); | |
0f20cc35 DJ |
3560 | } |
3561 | ||
0a1b45a2 | 3562 | entry->tls_initialized = true; |
e641e783 | 3563 | } |
0f20cc35 | 3564 | |
0a44bf69 RS |
3565 | /* Return the offset from _GLOBAL_OFFSET_TABLE_ of the .got.plt entry |
3566 | for global symbol H. .got.plt comes before the GOT, so the offset | |
3567 | will be negative. */ | |
3568 | ||
3569 | static bfd_vma | |
3570 | mips_elf_gotplt_index (struct bfd_link_info *info, | |
3571 | struct elf_link_hash_entry *h) | |
3572 | { | |
1bbce132 | 3573 | bfd_vma got_address, got_value; |
0a44bf69 RS |
3574 | struct mips_elf_link_hash_table *htab; |
3575 | ||
3576 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
3577 | BFD_ASSERT (htab != NULL); |
3578 | ||
1bbce132 MR |
3579 | BFD_ASSERT (h->plt.plist != NULL); |
3580 | BFD_ASSERT (h->plt.plist->gotplt_index != MINUS_ONE); | |
0a44bf69 RS |
3581 | |
3582 | /* Calculate the address of the associated .got.plt entry. */ | |
ce558b89 AM |
3583 | got_address = (htab->root.sgotplt->output_section->vma |
3584 | + htab->root.sgotplt->output_offset | |
1bbce132 MR |
3585 | + (h->plt.plist->gotplt_index |
3586 | * MIPS_ELF_GOT_SIZE (info->output_bfd))); | |
0a44bf69 RS |
3587 | |
3588 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
3589 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
3590 | + htab->root.hgot->root.u.def.section->output_offset | |
3591 | + htab->root.hgot->root.u.def.value); | |
3592 | ||
3593 | return got_address - got_value; | |
3594 | } | |
3595 | ||
5c18022e | 3596 | /* Return the GOT offset for address VALUE. If there is not yet a GOT |
0a44bf69 RS |
3597 | entry for this value, create one. If R_SYMNDX refers to a TLS symbol, |
3598 | create a TLS GOT entry instead. Return -1 if no satisfactory GOT | |
3599 | offset can be found. */ | |
b49e97c9 TS |
3600 | |
3601 | static bfd_vma | |
9719ad41 | 3602 | mips_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3603 | bfd_vma value, unsigned long r_symndx, |
0f20cc35 | 3604 | struct mips_elf_link_hash_entry *h, int r_type) |
b49e97c9 | 3605 | { |
a8028dd0 | 3606 | struct mips_elf_link_hash_table *htab; |
b15e6682 | 3607 | struct mips_got_entry *entry; |
b49e97c9 | 3608 | |
a8028dd0 | 3609 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3610 | BFD_ASSERT (htab != NULL); |
3611 | ||
a8028dd0 RS |
3612 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, |
3613 | r_symndx, h, r_type); | |
0f20cc35 | 3614 | if (!entry) |
b15e6682 | 3615 | return MINUS_ONE; |
0f20cc35 | 3616 | |
e641e783 | 3617 | if (entry->tls_type) |
9ab066b4 RS |
3618 | mips_elf_initialize_tls_slots (abfd, info, entry, h, value); |
3619 | return entry->gotidx; | |
b49e97c9 TS |
3620 | } |
3621 | ||
13fbec83 | 3622 | /* Return the GOT index of global symbol H in the primary GOT. */ |
b49e97c9 TS |
3623 | |
3624 | static bfd_vma | |
13fbec83 RS |
3625 | mips_elf_primary_global_got_index (bfd *obfd, struct bfd_link_info *info, |
3626 | struct elf_link_hash_entry *h) | |
3627 | { | |
3628 | struct mips_elf_link_hash_table *htab; | |
3629 | long global_got_dynindx; | |
3630 | struct mips_got_info *g; | |
3631 | bfd_vma got_index; | |
3632 | ||
3633 | htab = mips_elf_hash_table (info); | |
3634 | BFD_ASSERT (htab != NULL); | |
3635 | ||
3636 | global_got_dynindx = 0; | |
3637 | if (htab->global_gotsym != NULL) | |
3638 | global_got_dynindx = htab->global_gotsym->dynindx; | |
3639 | ||
3640 | /* Once we determine the global GOT entry with the lowest dynamic | |
3641 | symbol table index, we must put all dynamic symbols with greater | |
3642 | indices into the primary GOT. That makes it easy to calculate the | |
3643 | GOT offset. */ | |
3644 | BFD_ASSERT (h->dynindx >= global_got_dynindx); | |
0a1b45a2 | 3645 | g = mips_elf_bfd_got (obfd, false); |
13fbec83 RS |
3646 | got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) |
3647 | * MIPS_ELF_GOT_SIZE (obfd)); | |
ce558b89 | 3648 | BFD_ASSERT (got_index < htab->root.sgot->size); |
13fbec83 RS |
3649 | |
3650 | return got_index; | |
3651 | } | |
3652 | ||
3653 | /* Return the GOT index for the global symbol indicated by H, which is | |
3654 | referenced by a relocation of type R_TYPE in IBFD. */ | |
3655 | ||
3656 | static bfd_vma | |
3657 | mips_elf_global_got_index (bfd *obfd, struct bfd_link_info *info, bfd *ibfd, | |
3658 | struct elf_link_hash_entry *h, int r_type) | |
b49e97c9 | 3659 | { |
a8028dd0 | 3660 | struct mips_elf_link_hash_table *htab; |
6c42ddb9 RS |
3661 | struct mips_got_info *g; |
3662 | struct mips_got_entry lookup, *entry; | |
3663 | bfd_vma gotidx; | |
b49e97c9 | 3664 | |
a8028dd0 | 3665 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3666 | BFD_ASSERT (htab != NULL); |
3667 | ||
0a1b45a2 | 3668 | g = mips_elf_bfd_got (ibfd, false); |
6c42ddb9 | 3669 | BFD_ASSERT (g); |
f4416af6 | 3670 | |
6c42ddb9 | 3671 | lookup.tls_type = mips_elf_reloc_tls_type (r_type); |
0a1b45a2 | 3672 | if (!lookup.tls_type && g == mips_elf_bfd_got (obfd, false)) |
6c42ddb9 | 3673 | return mips_elf_primary_global_got_index (obfd, info, h); |
f4416af6 | 3674 | |
6c42ddb9 RS |
3675 | lookup.abfd = ibfd; |
3676 | lookup.symndx = -1; | |
3677 | lookup.d.h = (struct mips_elf_link_hash_entry *) h; | |
3678 | entry = htab_find (g->got_entries, &lookup); | |
3679 | BFD_ASSERT (entry); | |
0f20cc35 | 3680 | |
6c42ddb9 | 3681 | gotidx = entry->gotidx; |
ce558b89 | 3682 | BFD_ASSERT (gotidx > 0 && gotidx < htab->root.sgot->size); |
f4416af6 | 3683 | |
6c42ddb9 | 3684 | if (lookup.tls_type) |
0f20cc35 | 3685 | { |
0f20cc35 DJ |
3686 | bfd_vma value = MINUS_ONE; |
3687 | ||
3688 | if ((h->root.type == bfd_link_hash_defined | |
3689 | || h->root.type == bfd_link_hash_defweak) | |
3690 | && h->root.u.def.section->output_section) | |
3691 | value = (h->root.u.def.value | |
3692 | + h->root.u.def.section->output_offset | |
3693 | + h->root.u.def.section->output_section->vma); | |
3694 | ||
9ab066b4 | 3695 | mips_elf_initialize_tls_slots (obfd, info, entry, lookup.d.h, value); |
0f20cc35 | 3696 | } |
6c42ddb9 | 3697 | return gotidx; |
b49e97c9 TS |
3698 | } |
3699 | ||
5c18022e RS |
3700 | /* Find a GOT page entry that points to within 32KB of VALUE. These |
3701 | entries are supposed to be placed at small offsets in the GOT, i.e., | |
3702 | within 32KB of GP. Return the index of the GOT entry, or -1 if no | |
3703 | entry could be created. If OFFSETP is nonnull, use it to return the | |
0a44bf69 | 3704 | offset of the GOT entry from VALUE. */ |
b49e97c9 TS |
3705 | |
3706 | static bfd_vma | |
9719ad41 | 3707 | mips_elf_got_page (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
5c18022e | 3708 | bfd_vma value, bfd_vma *offsetp) |
b49e97c9 | 3709 | { |
91d6fa6a | 3710 | bfd_vma page, got_index; |
b15e6682 | 3711 | struct mips_got_entry *entry; |
b49e97c9 | 3712 | |
0a44bf69 | 3713 | page = (value + 0x8000) & ~(bfd_vma) 0xffff; |
a8028dd0 RS |
3714 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, page, 0, |
3715 | NULL, R_MIPS_GOT_PAGE); | |
b49e97c9 | 3716 | |
b15e6682 AO |
3717 | if (!entry) |
3718 | return MINUS_ONE; | |
143d77c5 | 3719 | |
91d6fa6a | 3720 | got_index = entry->gotidx; |
b49e97c9 TS |
3721 | |
3722 | if (offsetp) | |
f4416af6 | 3723 | *offsetp = value - entry->d.address; |
b49e97c9 | 3724 | |
91d6fa6a | 3725 | return got_index; |
b49e97c9 TS |
3726 | } |
3727 | ||
738e5348 | 3728 | /* Find a local GOT entry for an R_MIPS*_GOT16 relocation against VALUE. |
020d7251 RS |
3729 | EXTERNAL is true if the relocation was originally against a global |
3730 | symbol that binds locally. */ | |
b49e97c9 TS |
3731 | |
3732 | static bfd_vma | |
9719ad41 | 3733 | mips_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, |
0a1b45a2 | 3734 | bfd_vma value, bool external) |
b49e97c9 | 3735 | { |
b15e6682 | 3736 | struct mips_got_entry *entry; |
b49e97c9 | 3737 | |
0a44bf69 RS |
3738 | /* GOT16 relocations against local symbols are followed by a LO16 |
3739 | relocation; those against global symbols are not. Thus if the | |
3740 | symbol was originally local, the GOT16 relocation should load the | |
3741 | equivalent of %hi(VALUE), otherwise it should load VALUE itself. */ | |
b49e97c9 | 3742 | if (! external) |
0a44bf69 | 3743 | value = mips_elf_high (value) << 16; |
b49e97c9 | 3744 | |
738e5348 RS |
3745 | /* It doesn't matter whether the original relocation was R_MIPS_GOT16, |
3746 | R_MIPS16_GOT16, R_MIPS_CALL16, etc. The format of the entry is the | |
3747 | same in all cases. */ | |
a8028dd0 RS |
3748 | entry = mips_elf_create_local_got_entry (abfd, info, ibfd, value, 0, |
3749 | NULL, R_MIPS_GOT16); | |
b15e6682 AO |
3750 | if (entry) |
3751 | return entry->gotidx; | |
3752 | else | |
3753 | return MINUS_ONE; | |
b49e97c9 TS |
3754 | } |
3755 | ||
3756 | /* Returns the offset for the entry at the INDEXth position | |
3757 | in the GOT. */ | |
3758 | ||
3759 | static bfd_vma | |
a8028dd0 | 3760 | mips_elf_got_offset_from_index (struct bfd_link_info *info, bfd *output_bfd, |
91d6fa6a | 3761 | bfd *input_bfd, bfd_vma got_index) |
b49e97c9 | 3762 | { |
a8028dd0 | 3763 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3764 | asection *sgot; |
3765 | bfd_vma gp; | |
3766 | ||
a8028dd0 | 3767 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3768 | BFD_ASSERT (htab != NULL); |
3769 | ||
ce558b89 | 3770 | sgot = htab->root.sgot; |
f4416af6 | 3771 | gp = _bfd_get_gp_value (output_bfd) |
a8028dd0 | 3772 | + mips_elf_adjust_gp (output_bfd, htab->got_info, input_bfd); |
143d77c5 | 3773 | |
91d6fa6a | 3774 | return sgot->output_section->vma + sgot->output_offset + got_index - gp; |
b49e97c9 TS |
3775 | } |
3776 | ||
0a44bf69 RS |
3777 | /* Create and return a local GOT entry for VALUE, which was calculated |
3778 | from a symbol belonging to INPUT_SECTON. Return NULL if it could not | |
3779 | be created. If R_SYMNDX refers to a TLS symbol, create a TLS entry | |
3780 | instead. */ | |
b49e97c9 | 3781 | |
b15e6682 | 3782 | static struct mips_got_entry * |
0a44bf69 | 3783 | mips_elf_create_local_got_entry (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 3784 | bfd *ibfd, bfd_vma value, |
5c18022e | 3785 | unsigned long r_symndx, |
0f20cc35 DJ |
3786 | struct mips_elf_link_hash_entry *h, |
3787 | int r_type) | |
b49e97c9 | 3788 | { |
ebc53538 RS |
3789 | struct mips_got_entry lookup, *entry; |
3790 | void **loc; | |
f4416af6 | 3791 | struct mips_got_info *g; |
0a44bf69 | 3792 | struct mips_elf_link_hash_table *htab; |
6c42ddb9 | 3793 | bfd_vma gotidx; |
0a44bf69 RS |
3794 | |
3795 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 3796 | BFD_ASSERT (htab != NULL); |
b15e6682 | 3797 | |
0a1b45a2 | 3798 | g = mips_elf_bfd_got (ibfd, false); |
f4416af6 AO |
3799 | if (g == NULL) |
3800 | { | |
0a1b45a2 | 3801 | g = mips_elf_bfd_got (abfd, false); |
f4416af6 AO |
3802 | BFD_ASSERT (g != NULL); |
3803 | } | |
b15e6682 | 3804 | |
020d7251 RS |
3805 | /* This function shouldn't be called for symbols that live in the global |
3806 | area of the GOT. */ | |
3807 | BFD_ASSERT (h == NULL || h->global_got_area == GGA_NONE); | |
0f20cc35 | 3808 | |
ebc53538 RS |
3809 | lookup.tls_type = mips_elf_reloc_tls_type (r_type); |
3810 | if (lookup.tls_type) | |
3811 | { | |
3812 | lookup.abfd = ibfd; | |
df58fc94 | 3813 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 | 3814 | { |
ebc53538 RS |
3815 | lookup.symndx = 0; |
3816 | lookup.d.addend = 0; | |
0f20cc35 DJ |
3817 | } |
3818 | else if (h == NULL) | |
3819 | { | |
ebc53538 RS |
3820 | lookup.symndx = r_symndx; |
3821 | lookup.d.addend = 0; | |
0f20cc35 DJ |
3822 | } |
3823 | else | |
ebc53538 RS |
3824 | { |
3825 | lookup.symndx = -1; | |
3826 | lookup.d.h = h; | |
3827 | } | |
0f20cc35 | 3828 | |
ebc53538 RS |
3829 | entry = (struct mips_got_entry *) htab_find (g->got_entries, &lookup); |
3830 | BFD_ASSERT (entry); | |
0f20cc35 | 3831 | |
6c42ddb9 | 3832 | gotidx = entry->gotidx; |
ce558b89 | 3833 | BFD_ASSERT (gotidx > 0 && gotidx < htab->root.sgot->size); |
6c42ddb9 | 3834 | |
ebc53538 | 3835 | return entry; |
0f20cc35 DJ |
3836 | } |
3837 | ||
ebc53538 RS |
3838 | lookup.abfd = NULL; |
3839 | lookup.symndx = -1; | |
3840 | lookup.d.address = value; | |
3841 | loc = htab_find_slot (g->got_entries, &lookup, INSERT); | |
3842 | if (!loc) | |
b15e6682 | 3843 | return NULL; |
143d77c5 | 3844 | |
ebc53538 RS |
3845 | entry = (struct mips_got_entry *) *loc; |
3846 | if (entry) | |
3847 | return entry; | |
b15e6682 | 3848 | |
cb22ccf4 | 3849 | if (g->assigned_low_gotno > g->assigned_high_gotno) |
b49e97c9 TS |
3850 | { |
3851 | /* We didn't allocate enough space in the GOT. */ | |
4eca0228 | 3852 | _bfd_error_handler |
b49e97c9 TS |
3853 | (_("not enough GOT space for local GOT entries")); |
3854 | bfd_set_error (bfd_error_bad_value); | |
b15e6682 | 3855 | return NULL; |
b49e97c9 TS |
3856 | } |
3857 | ||
ebc53538 RS |
3858 | entry = (struct mips_got_entry *) bfd_alloc (abfd, sizeof (*entry)); |
3859 | if (!entry) | |
3860 | return NULL; | |
3861 | ||
cb22ccf4 KCY |
3862 | if (got16_reloc_p (r_type) |
3863 | || call16_reloc_p (r_type) | |
3864 | || got_page_reloc_p (r_type) | |
3865 | || got_disp_reloc_p (r_type)) | |
3866 | lookup.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_low_gotno++; | |
3867 | else | |
3868 | lookup.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_high_gotno--; | |
3869 | ||
ebc53538 RS |
3870 | *entry = lookup; |
3871 | *loc = entry; | |
3872 | ||
ce558b89 | 3873 | MIPS_ELF_PUT_WORD (abfd, value, htab->root.sgot->contents + entry->gotidx); |
b15e6682 | 3874 | |
5c18022e | 3875 | /* These GOT entries need a dynamic relocation on VxWorks. */ |
90c14f0c | 3876 | if (htab->root.target_os == is_vxworks) |
0a44bf69 RS |
3877 | { |
3878 | Elf_Internal_Rela outrel; | |
5c18022e | 3879 | asection *s; |
91d6fa6a | 3880 | bfd_byte *rloc; |
0a44bf69 | 3881 | bfd_vma got_address; |
0a44bf69 | 3882 | |
0a1b45a2 | 3883 | s = mips_elf_rel_dyn_section (info, false); |
ce558b89 AM |
3884 | got_address = (htab->root.sgot->output_section->vma |
3885 | + htab->root.sgot->output_offset | |
ebc53538 | 3886 | + entry->gotidx); |
0a44bf69 | 3887 | |
91d6fa6a | 3888 | rloc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); |
0a44bf69 | 3889 | outrel.r_offset = got_address; |
5c18022e RS |
3890 | outrel.r_info = ELF32_R_INFO (STN_UNDEF, R_MIPS_32); |
3891 | outrel.r_addend = value; | |
91d6fa6a | 3892 | bfd_elf32_swap_reloca_out (abfd, &outrel, rloc); |
0a44bf69 RS |
3893 | } |
3894 | ||
ebc53538 | 3895 | return entry; |
b49e97c9 TS |
3896 | } |
3897 | ||
d4596a51 RS |
3898 | /* Return the number of dynamic section symbols required by OUTPUT_BFD. |
3899 | The number might be exact or a worst-case estimate, depending on how | |
3900 | much information is available to elf_backend_omit_section_dynsym at | |
3901 | the current linking stage. */ | |
3902 | ||
3903 | static bfd_size_type | |
3904 | count_section_dynsyms (bfd *output_bfd, struct bfd_link_info *info) | |
3905 | { | |
3906 | bfd_size_type count; | |
3907 | ||
3908 | count = 0; | |
0e1862bb L |
3909 | if (bfd_link_pic (info) |
3910 | || elf_hash_table (info)->is_relocatable_executable) | |
d4596a51 RS |
3911 | { |
3912 | asection *p; | |
3913 | const struct elf_backend_data *bed; | |
3914 | ||
3915 | bed = get_elf_backend_data (output_bfd); | |
3916 | for (p = output_bfd->sections; p ; p = p->next) | |
3917 | if ((p->flags & SEC_EXCLUDE) == 0 | |
3918 | && (p->flags & SEC_ALLOC) != 0 | |
7f923b7f | 3919 | && elf_hash_table (info)->dynamic_relocs |
d4596a51 RS |
3920 | && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) |
3921 | ++count; | |
3922 | } | |
3923 | return count; | |
3924 | } | |
3925 | ||
b49e97c9 | 3926 | /* Sort the dynamic symbol table so that symbols that need GOT entries |
d4596a51 | 3927 | appear towards the end. */ |
b49e97c9 | 3928 | |
0a1b45a2 | 3929 | static bool |
d4596a51 | 3930 | mips_elf_sort_hash_table (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 3931 | { |
a8028dd0 | 3932 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
3933 | struct mips_elf_hash_sort_data hsd; |
3934 | struct mips_got_info *g; | |
b49e97c9 | 3935 | |
a8028dd0 | 3936 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
3937 | BFD_ASSERT (htab != NULL); |
3938 | ||
0f8c4b60 | 3939 | if (htab->root.dynsymcount == 0) |
0a1b45a2 | 3940 | return true; |
17a80fa8 | 3941 | |
a8028dd0 | 3942 | g = htab->got_info; |
d4596a51 | 3943 | if (g == NULL) |
0a1b45a2 | 3944 | return true; |
f4416af6 | 3945 | |
b49e97c9 | 3946 | hsd.low = NULL; |
23cc69b6 RS |
3947 | hsd.max_unref_got_dynindx |
3948 | = hsd.min_got_dynindx | |
0f8c4b60 | 3949 | = (htab->root.dynsymcount - g->reloc_only_gotno); |
e17b0c35 MR |
3950 | /* Add 1 to local symbol indices to account for the mandatory NULL entry |
3951 | at the head of the table; see `_bfd_elf_link_renumber_dynsyms'. */ | |
3952 | hsd.max_local_dynindx = count_section_dynsyms (abfd, info) + 1; | |
3953 | hsd.max_non_got_dynindx = htab->root.local_dynsymcount + 1; | |
f16a9783 MS |
3954 | hsd.output_bfd = abfd; |
3955 | if (htab->root.dynobj != NULL | |
3956 | && htab->root.dynamic_sections_created | |
3957 | && info->emit_gnu_hash) | |
3958 | { | |
3959 | asection *s = bfd_get_linker_section (htab->root.dynobj, ".MIPS.xhash"); | |
3960 | BFD_ASSERT (s != NULL); | |
3961 | hsd.mipsxhash = s->contents; | |
3962 | BFD_ASSERT (hsd.mipsxhash != NULL); | |
3963 | } | |
3964 | else | |
3965 | hsd.mipsxhash = NULL; | |
0f8c4b60 | 3966 | mips_elf_link_hash_traverse (htab, mips_elf_sort_hash_table_f, &hsd); |
b49e97c9 TS |
3967 | |
3968 | /* There should have been enough room in the symbol table to | |
44c410de | 3969 | accommodate both the GOT and non-GOT symbols. */ |
e17b0c35 | 3970 | BFD_ASSERT (hsd.max_local_dynindx <= htab->root.local_dynsymcount + 1); |
b49e97c9 | 3971 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); |
55f8b9d2 | 3972 | BFD_ASSERT (hsd.max_unref_got_dynindx == htab->root.dynsymcount); |
0f8c4b60 | 3973 | BFD_ASSERT (htab->root.dynsymcount - hsd.min_got_dynindx == g->global_gotno); |
b49e97c9 TS |
3974 | |
3975 | /* Now we know which dynamic symbol has the lowest dynamic symbol | |
3976 | table index in the GOT. */ | |
d222d210 | 3977 | htab->global_gotsym = hsd.low; |
b49e97c9 | 3978 | |
0a1b45a2 | 3979 | return true; |
b49e97c9 TS |
3980 | } |
3981 | ||
3982 | /* If H needs a GOT entry, assign it the highest available dynamic | |
3983 | index. Otherwise, assign it the lowest available dynamic | |
3984 | index. */ | |
3985 | ||
0a1b45a2 | 3986 | static bool |
9719ad41 | 3987 | mips_elf_sort_hash_table_f (struct mips_elf_link_hash_entry *h, void *data) |
b49e97c9 | 3988 | { |
9719ad41 | 3989 | struct mips_elf_hash_sort_data *hsd = data; |
b49e97c9 | 3990 | |
b49e97c9 TS |
3991 | /* Symbols without dynamic symbol table entries aren't interesting |
3992 | at all. */ | |
3993 | if (h->root.dynindx == -1) | |
0a1b45a2 | 3994 | return true; |
b49e97c9 | 3995 | |
634835ae | 3996 | switch (h->global_got_area) |
f4416af6 | 3997 | { |
634835ae | 3998 | case GGA_NONE: |
e17b0c35 MR |
3999 | if (h->root.forced_local) |
4000 | h->root.dynindx = hsd->max_local_dynindx++; | |
4001 | else | |
4002 | h->root.dynindx = hsd->max_non_got_dynindx++; | |
634835ae | 4003 | break; |
0f20cc35 | 4004 | |
634835ae | 4005 | case GGA_NORMAL: |
b49e97c9 TS |
4006 | h->root.dynindx = --hsd->min_got_dynindx; |
4007 | hsd->low = (struct elf_link_hash_entry *) h; | |
634835ae RS |
4008 | break; |
4009 | ||
4010 | case GGA_RELOC_ONLY: | |
634835ae RS |
4011 | if (hsd->max_unref_got_dynindx == hsd->min_got_dynindx) |
4012 | hsd->low = (struct elf_link_hash_entry *) h; | |
4013 | h->root.dynindx = hsd->max_unref_got_dynindx++; | |
4014 | break; | |
b49e97c9 TS |
4015 | } |
4016 | ||
f16a9783 MS |
4017 | /* Populate the .MIPS.xhash translation table entry with |
4018 | the symbol dynindx. */ | |
4019 | if (h->mipsxhash_loc != 0 && hsd->mipsxhash != NULL) | |
4020 | bfd_put_32 (hsd->output_bfd, h->root.dynindx, | |
4021 | hsd->mipsxhash + h->mipsxhash_loc); | |
4022 | ||
0a1b45a2 | 4023 | return true; |
b49e97c9 TS |
4024 | } |
4025 | ||
ee227692 RS |
4026 | /* Record that input bfd ABFD requires a GOT entry like *LOOKUP |
4027 | (which is owned by the caller and shouldn't be added to the | |
4028 | hash table directly). */ | |
4029 | ||
0a1b45a2 | 4030 | static bool |
ee227692 RS |
4031 | mips_elf_record_got_entry (struct bfd_link_info *info, bfd *abfd, |
4032 | struct mips_got_entry *lookup) | |
4033 | { | |
4034 | struct mips_elf_link_hash_table *htab; | |
4035 | struct mips_got_entry *entry; | |
4036 | struct mips_got_info *g; | |
4037 | void **loc, **bfd_loc; | |
4038 | ||
4039 | /* Make sure there's a slot for this entry in the master GOT. */ | |
4040 | htab = mips_elf_hash_table (info); | |
4041 | g = htab->got_info; | |
4042 | loc = htab_find_slot (g->got_entries, lookup, INSERT); | |
4043 | if (!loc) | |
0a1b45a2 | 4044 | return false; |
ee227692 RS |
4045 | |
4046 | /* Populate the entry if it isn't already. */ | |
4047 | entry = (struct mips_got_entry *) *loc; | |
4048 | if (!entry) | |
4049 | { | |
4050 | entry = (struct mips_got_entry *) bfd_alloc (abfd, sizeof (*entry)); | |
4051 | if (!entry) | |
0a1b45a2 | 4052 | return false; |
ee227692 | 4053 | |
0a1b45a2 | 4054 | lookup->tls_initialized = false; |
ee227692 RS |
4055 | lookup->gotidx = -1; |
4056 | *entry = *lookup; | |
4057 | *loc = entry; | |
4058 | } | |
4059 | ||
4060 | /* Reuse the same GOT entry for the BFD's GOT. */ | |
0a1b45a2 | 4061 | g = mips_elf_bfd_got (abfd, true); |
ee227692 | 4062 | if (!g) |
0a1b45a2 | 4063 | return false; |
ee227692 RS |
4064 | |
4065 | bfd_loc = htab_find_slot (g->got_entries, lookup, INSERT); | |
4066 | if (!bfd_loc) | |
0a1b45a2 | 4067 | return false; |
ee227692 RS |
4068 | |
4069 | if (!*bfd_loc) | |
4070 | *bfd_loc = entry; | |
0a1b45a2 | 4071 | return true; |
ee227692 RS |
4072 | } |
4073 | ||
e641e783 RS |
4074 | /* ABFD has a GOT relocation of type R_TYPE against H. Reserve a GOT |
4075 | entry for it. FOR_CALL is true if the caller is only interested in | |
6ccf4795 | 4076 | using the GOT entry for calls. */ |
b49e97c9 | 4077 | |
0a1b45a2 | 4078 | static bool |
9719ad41 RS |
4079 | mips_elf_record_global_got_symbol (struct elf_link_hash_entry *h, |
4080 | bfd *abfd, struct bfd_link_info *info, | |
0a1b45a2 | 4081 | bool for_call, int r_type) |
b49e97c9 | 4082 | { |
a8028dd0 | 4083 | struct mips_elf_link_hash_table *htab; |
634835ae | 4084 | struct mips_elf_link_hash_entry *hmips; |
ee227692 RS |
4085 | struct mips_got_entry entry; |
4086 | unsigned char tls_type; | |
a8028dd0 RS |
4087 | |
4088 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
4089 | BFD_ASSERT (htab != NULL); |
4090 | ||
634835ae | 4091 | hmips = (struct mips_elf_link_hash_entry *) h; |
6ccf4795 | 4092 | if (!for_call) |
0a1b45a2 | 4093 | hmips->got_only_for_calls = false; |
f4416af6 | 4094 | |
b49e97c9 TS |
4095 | /* A global symbol in the GOT must also be in the dynamic symbol |
4096 | table. */ | |
7c5fcef7 L |
4097 | if (h->dynindx == -1) |
4098 | { | |
4099 | switch (ELF_ST_VISIBILITY (h->other)) | |
4100 | { | |
4101 | case STV_INTERNAL: | |
4102 | case STV_HIDDEN: | |
0a1b45a2 | 4103 | _bfd_mips_elf_hide_symbol (info, h, true); |
7c5fcef7 L |
4104 | break; |
4105 | } | |
c152c796 | 4106 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
0a1b45a2 | 4107 | return false; |
7c5fcef7 | 4108 | } |
b49e97c9 | 4109 | |
ee227692 | 4110 | tls_type = mips_elf_reloc_tls_type (r_type); |
9ab066b4 | 4111 | if (tls_type == GOT_TLS_NONE && hmips->global_got_area > GGA_NORMAL) |
ee227692 | 4112 | hmips->global_got_area = GGA_NORMAL; |
86324f90 | 4113 | |
f4416af6 AO |
4114 | entry.abfd = abfd; |
4115 | entry.symndx = -1; | |
4116 | entry.d.h = (struct mips_elf_link_hash_entry *) h; | |
ee227692 RS |
4117 | entry.tls_type = tls_type; |
4118 | return mips_elf_record_got_entry (info, abfd, &entry); | |
b49e97c9 | 4119 | } |
f4416af6 | 4120 | |
e641e783 RS |
4121 | /* ABFD has a GOT relocation of type R_TYPE against symbol SYMNDX + ADDEND, |
4122 | where SYMNDX is a local symbol. Reserve a GOT entry for it. */ | |
f4416af6 | 4123 | |
0a1b45a2 | 4124 | static bool |
9719ad41 | 4125 | mips_elf_record_local_got_symbol (bfd *abfd, long symndx, bfd_vma addend, |
e641e783 | 4126 | struct bfd_link_info *info, int r_type) |
f4416af6 | 4127 | { |
a8028dd0 RS |
4128 | struct mips_elf_link_hash_table *htab; |
4129 | struct mips_got_info *g; | |
ee227692 | 4130 | struct mips_got_entry entry; |
f4416af6 | 4131 | |
a8028dd0 | 4132 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4133 | BFD_ASSERT (htab != NULL); |
4134 | ||
a8028dd0 RS |
4135 | g = htab->got_info; |
4136 | BFD_ASSERT (g != NULL); | |
4137 | ||
f4416af6 AO |
4138 | entry.abfd = abfd; |
4139 | entry.symndx = symndx; | |
4140 | entry.d.addend = addend; | |
e641e783 | 4141 | entry.tls_type = mips_elf_reloc_tls_type (r_type); |
ee227692 | 4142 | return mips_elf_record_got_entry (info, abfd, &entry); |
f4416af6 | 4143 | } |
c224138d | 4144 | |
13db6b44 RS |
4145 | /* Record that ABFD has a page relocation against SYMNDX + ADDEND. |
4146 | H is the symbol's hash table entry, or null if SYMNDX is local | |
4147 | to ABFD. */ | |
c224138d | 4148 | |
0a1b45a2 | 4149 | static bool |
13db6b44 RS |
4150 | mips_elf_record_got_page_ref (struct bfd_link_info *info, bfd *abfd, |
4151 | long symndx, struct elf_link_hash_entry *h, | |
4152 | bfd_signed_vma addend) | |
c224138d | 4153 | { |
a8028dd0 | 4154 | struct mips_elf_link_hash_table *htab; |
ee227692 | 4155 | struct mips_got_info *g1, *g2; |
13db6b44 | 4156 | struct mips_got_page_ref lookup, *entry; |
ee227692 | 4157 | void **loc, **bfd_loc; |
c224138d | 4158 | |
a8028dd0 | 4159 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4160 | BFD_ASSERT (htab != NULL); |
4161 | ||
ee227692 RS |
4162 | g1 = htab->got_info; |
4163 | BFD_ASSERT (g1 != NULL); | |
a8028dd0 | 4164 | |
13db6b44 RS |
4165 | if (h) |
4166 | { | |
4167 | lookup.symndx = -1; | |
4168 | lookup.u.h = (struct mips_elf_link_hash_entry *) h; | |
4169 | } | |
4170 | else | |
4171 | { | |
4172 | lookup.symndx = symndx; | |
4173 | lookup.u.abfd = abfd; | |
4174 | } | |
4175 | lookup.addend = addend; | |
4176 | loc = htab_find_slot (g1->got_page_refs, &lookup, INSERT); | |
c224138d | 4177 | if (loc == NULL) |
0a1b45a2 | 4178 | return false; |
c224138d | 4179 | |
13db6b44 | 4180 | entry = (struct mips_got_page_ref *) *loc; |
c224138d RS |
4181 | if (!entry) |
4182 | { | |
4183 | entry = bfd_alloc (abfd, sizeof (*entry)); | |
4184 | if (!entry) | |
0a1b45a2 | 4185 | return false; |
c224138d | 4186 | |
13db6b44 | 4187 | *entry = lookup; |
c224138d RS |
4188 | *loc = entry; |
4189 | } | |
4190 | ||
ee227692 | 4191 | /* Add the same entry to the BFD's GOT. */ |
0a1b45a2 | 4192 | g2 = mips_elf_bfd_got (abfd, true); |
ee227692 | 4193 | if (!g2) |
0a1b45a2 | 4194 | return false; |
ee227692 | 4195 | |
13db6b44 | 4196 | bfd_loc = htab_find_slot (g2->got_page_refs, &lookup, INSERT); |
ee227692 | 4197 | if (!bfd_loc) |
0a1b45a2 | 4198 | return false; |
ee227692 RS |
4199 | |
4200 | if (!*bfd_loc) | |
4201 | *bfd_loc = entry; | |
4202 | ||
0a1b45a2 | 4203 | return true; |
c224138d | 4204 | } |
33bb52fb RS |
4205 | |
4206 | /* Add room for N relocations to the .rel(a).dyn section in ABFD. */ | |
4207 | ||
4208 | static void | |
4209 | mips_elf_allocate_dynamic_relocations (bfd *abfd, struct bfd_link_info *info, | |
4210 | unsigned int n) | |
4211 | { | |
4212 | asection *s; | |
4213 | struct mips_elf_link_hash_table *htab; | |
4214 | ||
4215 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
4216 | BFD_ASSERT (htab != NULL); |
4217 | ||
0a1b45a2 | 4218 | s = mips_elf_rel_dyn_section (info, false); |
33bb52fb RS |
4219 | BFD_ASSERT (s != NULL); |
4220 | ||
90c14f0c | 4221 | if (htab->root.target_os == is_vxworks) |
33bb52fb RS |
4222 | s->size += n * MIPS_ELF_RELA_SIZE (abfd); |
4223 | else | |
4224 | { | |
4225 | if (s->size == 0) | |
4226 | { | |
4227 | /* Make room for a null element. */ | |
4228 | s->size += MIPS_ELF_REL_SIZE (abfd); | |
4229 | ++s->reloc_count; | |
4230 | } | |
4231 | s->size += n * MIPS_ELF_REL_SIZE (abfd); | |
4232 | } | |
4233 | } | |
4234 | \f | |
476366af RS |
4235 | /* A htab_traverse callback for GOT entries, with DATA pointing to a |
4236 | mips_elf_traverse_got_arg structure. Count the number of GOT | |
4237 | entries and TLS relocs. Set DATA->value to true if we need | |
4238 | to resolve indirect or warning symbols and then recreate the GOT. */ | |
33bb52fb RS |
4239 | |
4240 | static int | |
4241 | mips_elf_check_recreate_got (void **entryp, void *data) | |
4242 | { | |
4243 | struct mips_got_entry *entry; | |
476366af | 4244 | struct mips_elf_traverse_got_arg *arg; |
33bb52fb RS |
4245 | |
4246 | entry = (struct mips_got_entry *) *entryp; | |
476366af | 4247 | arg = (struct mips_elf_traverse_got_arg *) data; |
33bb52fb RS |
4248 | if (entry->abfd != NULL && entry->symndx == -1) |
4249 | { | |
4250 | struct mips_elf_link_hash_entry *h; | |
4251 | ||
4252 | h = entry->d.h; | |
4253 | if (h->root.root.type == bfd_link_hash_indirect | |
4254 | || h->root.root.type == bfd_link_hash_warning) | |
4255 | { | |
0a1b45a2 | 4256 | arg->value = true; |
33bb52fb RS |
4257 | return 0; |
4258 | } | |
4259 | } | |
476366af | 4260 | mips_elf_count_got_entry (arg->info, arg->g, entry); |
33bb52fb RS |
4261 | return 1; |
4262 | } | |
4263 | ||
476366af RS |
4264 | /* A htab_traverse callback for GOT entries, with DATA pointing to a |
4265 | mips_elf_traverse_got_arg structure. Add all entries to DATA->g, | |
4266 | converting entries for indirect and warning symbols into entries | |
4267 | for the target symbol. Set DATA->g to null on error. */ | |
33bb52fb RS |
4268 | |
4269 | static int | |
4270 | mips_elf_recreate_got (void **entryp, void *data) | |
4271 | { | |
72e7511a | 4272 | struct mips_got_entry new_entry, *entry; |
476366af | 4273 | struct mips_elf_traverse_got_arg *arg; |
33bb52fb RS |
4274 | void **slot; |
4275 | ||
33bb52fb | 4276 | entry = (struct mips_got_entry *) *entryp; |
476366af | 4277 | arg = (struct mips_elf_traverse_got_arg *) data; |
72e7511a RS |
4278 | if (entry->abfd != NULL |
4279 | && entry->symndx == -1 | |
4280 | && (entry->d.h->root.root.type == bfd_link_hash_indirect | |
4281 | || entry->d.h->root.root.type == bfd_link_hash_warning)) | |
33bb52fb RS |
4282 | { |
4283 | struct mips_elf_link_hash_entry *h; | |
4284 | ||
72e7511a RS |
4285 | new_entry = *entry; |
4286 | entry = &new_entry; | |
33bb52fb | 4287 | h = entry->d.h; |
72e7511a | 4288 | do |
634835ae RS |
4289 | { |
4290 | BFD_ASSERT (h->global_got_area == GGA_NONE); | |
4291 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
4292 | } | |
72e7511a RS |
4293 | while (h->root.root.type == bfd_link_hash_indirect |
4294 | || h->root.root.type == bfd_link_hash_warning); | |
33bb52fb RS |
4295 | entry->d.h = h; |
4296 | } | |
476366af | 4297 | slot = htab_find_slot (arg->g->got_entries, entry, INSERT); |
33bb52fb RS |
4298 | if (slot == NULL) |
4299 | { | |
476366af | 4300 | arg->g = NULL; |
33bb52fb RS |
4301 | return 0; |
4302 | } | |
4303 | if (*slot == NULL) | |
72e7511a RS |
4304 | { |
4305 | if (entry == &new_entry) | |
4306 | { | |
4307 | entry = bfd_alloc (entry->abfd, sizeof (*entry)); | |
4308 | if (!entry) | |
4309 | { | |
476366af | 4310 | arg->g = NULL; |
72e7511a RS |
4311 | return 0; |
4312 | } | |
4313 | *entry = new_entry; | |
4314 | } | |
4315 | *slot = entry; | |
476366af | 4316 | mips_elf_count_got_entry (arg->info, arg->g, entry); |
72e7511a | 4317 | } |
33bb52fb RS |
4318 | return 1; |
4319 | } | |
4320 | ||
13db6b44 RS |
4321 | /* Return the maximum number of GOT page entries required for RANGE. */ |
4322 | ||
4323 | static bfd_vma | |
4324 | mips_elf_pages_for_range (const struct mips_got_page_range *range) | |
4325 | { | |
4326 | return (range->max_addend - range->min_addend + 0x1ffff) >> 16; | |
4327 | } | |
4328 | ||
4329 | /* Record that G requires a page entry that can reach SEC + ADDEND. */ | |
4330 | ||
0a1b45a2 | 4331 | static bool |
b75d42bc | 4332 | mips_elf_record_got_page_entry (struct mips_elf_traverse_got_arg *arg, |
13db6b44 RS |
4333 | asection *sec, bfd_signed_vma addend) |
4334 | { | |
b75d42bc | 4335 | struct mips_got_info *g = arg->g; |
13db6b44 RS |
4336 | struct mips_got_page_entry lookup, *entry; |
4337 | struct mips_got_page_range **range_ptr, *range; | |
4338 | bfd_vma old_pages, new_pages; | |
4339 | void **loc; | |
4340 | ||
4341 | /* Find the mips_got_page_entry hash table entry for this section. */ | |
4342 | lookup.sec = sec; | |
4343 | loc = htab_find_slot (g->got_page_entries, &lookup, INSERT); | |
4344 | if (loc == NULL) | |
0a1b45a2 | 4345 | return false; |
13db6b44 RS |
4346 | |
4347 | /* Create a mips_got_page_entry if this is the first time we've | |
4348 | seen the section. */ | |
4349 | entry = (struct mips_got_page_entry *) *loc; | |
4350 | if (!entry) | |
4351 | { | |
b75d42bc | 4352 | entry = bfd_zalloc (arg->info->output_bfd, sizeof (*entry)); |
13db6b44 | 4353 | if (!entry) |
0a1b45a2 | 4354 | return false; |
13db6b44 RS |
4355 | |
4356 | entry->sec = sec; | |
4357 | *loc = entry; | |
4358 | } | |
4359 | ||
4360 | /* Skip over ranges whose maximum extent cannot share a page entry | |
4361 | with ADDEND. */ | |
4362 | range_ptr = &entry->ranges; | |
4363 | while (*range_ptr && addend > (*range_ptr)->max_addend + 0xffff) | |
4364 | range_ptr = &(*range_ptr)->next; | |
4365 | ||
4366 | /* If we scanned to the end of the list, or found a range whose | |
4367 | minimum extent cannot share a page entry with ADDEND, create | |
4368 | a new singleton range. */ | |
4369 | range = *range_ptr; | |
4370 | if (!range || addend < range->min_addend - 0xffff) | |
4371 | { | |
b75d42bc | 4372 | range = bfd_zalloc (arg->info->output_bfd, sizeof (*range)); |
13db6b44 | 4373 | if (!range) |
0a1b45a2 | 4374 | return false; |
13db6b44 RS |
4375 | |
4376 | range->next = *range_ptr; | |
4377 | range->min_addend = addend; | |
4378 | range->max_addend = addend; | |
4379 | ||
4380 | *range_ptr = range; | |
4381 | entry->num_pages++; | |
4382 | g->page_gotno++; | |
0a1b45a2 | 4383 | return true; |
13db6b44 RS |
4384 | } |
4385 | ||
4386 | /* Remember how many pages the old range contributed. */ | |
4387 | old_pages = mips_elf_pages_for_range (range); | |
4388 | ||
4389 | /* Update the ranges. */ | |
4390 | if (addend < range->min_addend) | |
4391 | range->min_addend = addend; | |
4392 | else if (addend > range->max_addend) | |
4393 | { | |
4394 | if (range->next && addend >= range->next->min_addend - 0xffff) | |
4395 | { | |
4396 | old_pages += mips_elf_pages_for_range (range->next); | |
4397 | range->max_addend = range->next->max_addend; | |
4398 | range->next = range->next->next; | |
4399 | } | |
4400 | else | |
4401 | range->max_addend = addend; | |
4402 | } | |
4403 | ||
4404 | /* Record any change in the total estimate. */ | |
4405 | new_pages = mips_elf_pages_for_range (range); | |
4406 | if (old_pages != new_pages) | |
4407 | { | |
4408 | entry->num_pages += new_pages - old_pages; | |
4409 | g->page_gotno += new_pages - old_pages; | |
4410 | } | |
4411 | ||
0a1b45a2 | 4412 | return true; |
13db6b44 RS |
4413 | } |
4414 | ||
4415 | /* A htab_traverse callback for which *REFP points to a mips_got_page_ref | |
4416 | and for which DATA points to a mips_elf_traverse_got_arg. Work out | |
4417 | whether the page reference described by *REFP needs a GOT page entry, | |
4418 | and record that entry in DATA->g if so. Set DATA->g to null on failure. */ | |
4419 | ||
1201fda6 | 4420 | static int |
13db6b44 RS |
4421 | mips_elf_resolve_got_page_ref (void **refp, void *data) |
4422 | { | |
4423 | struct mips_got_page_ref *ref; | |
4424 | struct mips_elf_traverse_got_arg *arg; | |
4425 | struct mips_elf_link_hash_table *htab; | |
4426 | asection *sec; | |
4427 | bfd_vma addend; | |
4428 | ||
4429 | ref = (struct mips_got_page_ref *) *refp; | |
4430 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4431 | htab = mips_elf_hash_table (arg->info); | |
4432 | ||
4433 | if (ref->symndx < 0) | |
4434 | { | |
4435 | struct mips_elf_link_hash_entry *h; | |
4436 | ||
4437 | /* Global GOT_PAGEs decay to GOT_DISP and so don't need page entries. */ | |
4438 | h = ref->u.h; | |
4439 | if (!SYMBOL_REFERENCES_LOCAL (arg->info, &h->root)) | |
4440 | return 1; | |
4441 | ||
4442 | /* Ignore undefined symbols; we'll issue an error later if | |
4443 | appropriate. */ | |
4444 | if (!((h->root.root.type == bfd_link_hash_defined | |
4445 | || h->root.root.type == bfd_link_hash_defweak) | |
4446 | && h->root.root.u.def.section)) | |
4447 | return 1; | |
4448 | ||
4449 | sec = h->root.root.u.def.section; | |
4450 | addend = h->root.root.u.def.value + ref->addend; | |
4451 | } | |
4452 | else | |
4453 | { | |
4454 | Elf_Internal_Sym *isym; | |
4455 | ||
4456 | /* Read in the symbol. */ | |
f1dfbfdb | 4457 | isym = bfd_sym_from_r_symndx (&htab->root.sym_cache, ref->u.abfd, |
13db6b44 RS |
4458 | ref->symndx); |
4459 | if (isym == NULL) | |
4460 | { | |
4461 | arg->g = NULL; | |
4462 | return 0; | |
4463 | } | |
4464 | ||
4465 | /* Get the associated input section. */ | |
4466 | sec = bfd_section_from_elf_index (ref->u.abfd, isym->st_shndx); | |
4467 | if (sec == NULL) | |
4468 | { | |
4469 | arg->g = NULL; | |
4470 | return 0; | |
4471 | } | |
4472 | ||
4473 | /* If this is a mergable section, work out the section and offset | |
4474 | of the merged data. For section symbols, the addend specifies | |
4475 | of the offset _of_ the first byte in the data, otherwise it | |
4476 | specifies the offset _from_ the first byte. */ | |
4477 | if (sec->flags & SEC_MERGE) | |
4478 | { | |
4479 | void *secinfo; | |
4480 | ||
4481 | secinfo = elf_section_data (sec)->sec_info; | |
4482 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
4483 | addend = _bfd_merged_section_offset (ref->u.abfd, &sec, secinfo, | |
4484 | isym->st_value + ref->addend); | |
4485 | else | |
4486 | addend = _bfd_merged_section_offset (ref->u.abfd, &sec, secinfo, | |
4487 | isym->st_value) + ref->addend; | |
4488 | } | |
4489 | else | |
4490 | addend = isym->st_value + ref->addend; | |
4491 | } | |
b75d42bc | 4492 | if (!mips_elf_record_got_page_entry (arg, sec, addend)) |
13db6b44 RS |
4493 | { |
4494 | arg->g = NULL; | |
4495 | return 0; | |
4496 | } | |
4497 | return 1; | |
4498 | } | |
4499 | ||
33bb52fb | 4500 | /* If any entries in G->got_entries are for indirect or warning symbols, |
13db6b44 RS |
4501 | replace them with entries for the target symbol. Convert g->got_page_refs |
4502 | into got_page_entry structures and estimate the number of page entries | |
4503 | that they require. */ | |
33bb52fb | 4504 | |
0a1b45a2 | 4505 | static bool |
476366af RS |
4506 | mips_elf_resolve_final_got_entries (struct bfd_link_info *info, |
4507 | struct mips_got_info *g) | |
33bb52fb | 4508 | { |
476366af RS |
4509 | struct mips_elf_traverse_got_arg tga; |
4510 | struct mips_got_info oldg; | |
4511 | ||
4512 | oldg = *g; | |
33bb52fb | 4513 | |
476366af RS |
4514 | tga.info = info; |
4515 | tga.g = g; | |
0a1b45a2 | 4516 | tga.value = false; |
476366af RS |
4517 | htab_traverse (g->got_entries, mips_elf_check_recreate_got, &tga); |
4518 | if (tga.value) | |
33bb52fb | 4519 | { |
476366af RS |
4520 | *g = oldg; |
4521 | g->got_entries = htab_create (htab_size (oldg.got_entries), | |
4522 | mips_elf_got_entry_hash, | |
4523 | mips_elf_got_entry_eq, NULL); | |
4524 | if (!g->got_entries) | |
0a1b45a2 | 4525 | return false; |
33bb52fb | 4526 | |
476366af RS |
4527 | htab_traverse (oldg.got_entries, mips_elf_recreate_got, &tga); |
4528 | if (!tga.g) | |
0a1b45a2 | 4529 | return false; |
476366af RS |
4530 | |
4531 | htab_delete (oldg.got_entries); | |
33bb52fb | 4532 | } |
13db6b44 RS |
4533 | |
4534 | g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash, | |
4535 | mips_got_page_entry_eq, NULL); | |
4536 | if (g->got_page_entries == NULL) | |
0a1b45a2 | 4537 | return false; |
13db6b44 RS |
4538 | |
4539 | tga.info = info; | |
4540 | tga.g = g; | |
4541 | htab_traverse (g->got_page_refs, mips_elf_resolve_got_page_ref, &tga); | |
4542 | ||
0a1b45a2 | 4543 | return true; |
33bb52fb RS |
4544 | } |
4545 | ||
c5d6fa44 RS |
4546 | /* Return true if a GOT entry for H should live in the local rather than |
4547 | global GOT area. */ | |
4548 | ||
0a1b45a2 | 4549 | static bool |
c5d6fa44 RS |
4550 | mips_use_local_got_p (struct bfd_link_info *info, |
4551 | struct mips_elf_link_hash_entry *h) | |
4552 | { | |
4553 | /* Symbols that aren't in the dynamic symbol table must live in the | |
4554 | local GOT. This includes symbols that are completely undefined | |
4555 | and which therefore don't bind locally. We'll report undefined | |
4556 | symbols later if appropriate. */ | |
4557 | if (h->root.dynindx == -1) | |
0a1b45a2 | 4558 | return true; |
c5d6fa44 | 4559 | |
47275900 MR |
4560 | /* Absolute symbols, if ever they need a GOT entry, cannot ever go |
4561 | to the local GOT, as they would be implicitly relocated by the | |
4562 | base address by the dynamic loader. */ | |
4563 | if (bfd_is_abs_symbol (&h->root.root)) | |
0a1b45a2 | 4564 | return false; |
47275900 | 4565 | |
c5d6fa44 RS |
4566 | /* Symbols that bind locally can (and in the case of forced-local |
4567 | symbols, must) live in the local GOT. */ | |
4568 | if (h->got_only_for_calls | |
4569 | ? SYMBOL_CALLS_LOCAL (info, &h->root) | |
4570 | : SYMBOL_REFERENCES_LOCAL (info, &h->root)) | |
0a1b45a2 | 4571 | return true; |
c5d6fa44 RS |
4572 | |
4573 | /* If this is an executable that must provide a definition of the symbol, | |
4574 | either though PLTs or copy relocations, then that address should go in | |
4575 | the local rather than global GOT. */ | |
0e1862bb | 4576 | if (bfd_link_executable (info) && h->has_static_relocs) |
0a1b45a2 | 4577 | return true; |
c5d6fa44 | 4578 | |
0a1b45a2 | 4579 | return false; |
c5d6fa44 RS |
4580 | } |
4581 | ||
6c42ddb9 RS |
4582 | /* A mips_elf_link_hash_traverse callback for which DATA points to the |
4583 | link_info structure. Decide whether the hash entry needs an entry in | |
4584 | the global part of the primary GOT, setting global_got_area accordingly. | |
4585 | Count the number of global symbols that are in the primary GOT only | |
4586 | because they have relocations against them (reloc_only_gotno). */ | |
33bb52fb | 4587 | |
0a1b45a2 | 4588 | static bool |
d4596a51 | 4589 | mips_elf_count_got_symbols (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb | 4590 | { |
020d7251 | 4591 | struct bfd_link_info *info; |
6ccf4795 | 4592 | struct mips_elf_link_hash_table *htab; |
33bb52fb RS |
4593 | struct mips_got_info *g; |
4594 | ||
020d7251 | 4595 | info = (struct bfd_link_info *) data; |
6ccf4795 RS |
4596 | htab = mips_elf_hash_table (info); |
4597 | g = htab->got_info; | |
d4596a51 | 4598 | if (h->global_got_area != GGA_NONE) |
33bb52fb | 4599 | { |
020d7251 | 4600 | /* Make a final decision about whether the symbol belongs in the |
c5d6fa44 RS |
4601 | local or global GOT. */ |
4602 | if (mips_use_local_got_p (info, h)) | |
6c42ddb9 RS |
4603 | /* The symbol belongs in the local GOT. We no longer need this |
4604 | entry if it was only used for relocations; those relocations | |
4605 | will be against the null or section symbol instead of H. */ | |
4606 | h->global_got_area = GGA_NONE; | |
90c14f0c | 4607 | else if (htab->root.target_os == is_vxworks |
6ccf4795 | 4608 | && h->got_only_for_calls |
1bbce132 | 4609 | && h->root.plt.plist->mips_offset != MINUS_ONE) |
6ccf4795 RS |
4610 | /* On VxWorks, calls can refer directly to the .got.plt entry; |
4611 | they don't need entries in the regular GOT. .got.plt entries | |
4612 | will be allocated by _bfd_mips_elf_adjust_dynamic_symbol. */ | |
4613 | h->global_got_area = GGA_NONE; | |
6c42ddb9 | 4614 | else if (h->global_got_area == GGA_RELOC_ONLY) |
23cc69b6 | 4615 | { |
6c42ddb9 | 4616 | g->reloc_only_gotno++; |
23cc69b6 | 4617 | g->global_gotno++; |
23cc69b6 | 4618 | } |
33bb52fb RS |
4619 | } |
4620 | return 1; | |
4621 | } | |
f4416af6 | 4622 | \f |
d7206569 RS |
4623 | /* A htab_traverse callback for GOT entries. Add each one to the GOT |
4624 | given in mips_elf_traverse_got_arg DATA. Clear DATA->G on error. */ | |
f4416af6 AO |
4625 | |
4626 | static int | |
d7206569 | 4627 | mips_elf_add_got_entry (void **entryp, void *data) |
f4416af6 | 4628 | { |
d7206569 RS |
4629 | struct mips_got_entry *entry; |
4630 | struct mips_elf_traverse_got_arg *arg; | |
4631 | void **slot; | |
f4416af6 | 4632 | |
d7206569 RS |
4633 | entry = (struct mips_got_entry *) *entryp; |
4634 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4635 | slot = htab_find_slot (arg->g->got_entries, entry, INSERT); | |
4636 | if (!slot) | |
f4416af6 | 4637 | { |
d7206569 RS |
4638 | arg->g = NULL; |
4639 | return 0; | |
f4416af6 | 4640 | } |
d7206569 | 4641 | if (!*slot) |
c224138d | 4642 | { |
d7206569 RS |
4643 | *slot = entry; |
4644 | mips_elf_count_got_entry (arg->info, arg->g, entry); | |
c224138d | 4645 | } |
f4416af6 AO |
4646 | return 1; |
4647 | } | |
4648 | ||
d7206569 RS |
4649 | /* A htab_traverse callback for GOT page entries. Add each one to the GOT |
4650 | given in mips_elf_traverse_got_arg DATA. Clear DATA->G on error. */ | |
c224138d RS |
4651 | |
4652 | static int | |
d7206569 | 4653 | mips_elf_add_got_page_entry (void **entryp, void *data) |
c224138d | 4654 | { |
d7206569 RS |
4655 | struct mips_got_page_entry *entry; |
4656 | struct mips_elf_traverse_got_arg *arg; | |
4657 | void **slot; | |
c224138d | 4658 | |
d7206569 RS |
4659 | entry = (struct mips_got_page_entry *) *entryp; |
4660 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4661 | slot = htab_find_slot (arg->g->got_page_entries, entry, INSERT); | |
4662 | if (!slot) | |
c224138d | 4663 | { |
d7206569 | 4664 | arg->g = NULL; |
c224138d RS |
4665 | return 0; |
4666 | } | |
d7206569 RS |
4667 | if (!*slot) |
4668 | { | |
4669 | *slot = entry; | |
4670 | arg->g->page_gotno += entry->num_pages; | |
4671 | } | |
c224138d RS |
4672 | return 1; |
4673 | } | |
4674 | ||
d7206569 RS |
4675 | /* Consider merging FROM, which is ABFD's GOT, into TO. Return -1 if |
4676 | this would lead to overflow, 1 if they were merged successfully, | |
4677 | and 0 if a merge failed due to lack of memory. (These values are chosen | |
4678 | so that nonnegative return values can be returned by a htab_traverse | |
4679 | callback.) */ | |
c224138d RS |
4680 | |
4681 | static int | |
d7206569 | 4682 | mips_elf_merge_got_with (bfd *abfd, struct mips_got_info *from, |
c224138d RS |
4683 | struct mips_got_info *to, |
4684 | struct mips_elf_got_per_bfd_arg *arg) | |
4685 | { | |
d7206569 | 4686 | struct mips_elf_traverse_got_arg tga; |
c224138d RS |
4687 | unsigned int estimate; |
4688 | ||
4689 | /* Work out how many page entries we would need for the combined GOT. */ | |
4690 | estimate = arg->max_pages; | |
4691 | if (estimate >= from->page_gotno + to->page_gotno) | |
4692 | estimate = from->page_gotno + to->page_gotno; | |
4693 | ||
e2ece73c | 4694 | /* And conservatively estimate how many local and TLS entries |
c224138d | 4695 | would be needed. */ |
e2ece73c RS |
4696 | estimate += from->local_gotno + to->local_gotno; |
4697 | estimate += from->tls_gotno + to->tls_gotno; | |
4698 | ||
17214937 RS |
4699 | /* If we're merging with the primary got, any TLS relocations will |
4700 | come after the full set of global entries. Otherwise estimate those | |
e2ece73c | 4701 | conservatively as well. */ |
17214937 | 4702 | if (to == arg->primary && from->tls_gotno + to->tls_gotno) |
e2ece73c RS |
4703 | estimate += arg->global_count; |
4704 | else | |
4705 | estimate += from->global_gotno + to->global_gotno; | |
c224138d RS |
4706 | |
4707 | /* Bail out if the combined GOT might be too big. */ | |
4708 | if (estimate > arg->max_count) | |
4709 | return -1; | |
4710 | ||
c224138d | 4711 | /* Transfer the bfd's got information from FROM to TO. */ |
d7206569 RS |
4712 | tga.info = arg->info; |
4713 | tga.g = to; | |
4714 | htab_traverse (from->got_entries, mips_elf_add_got_entry, &tga); | |
4715 | if (!tga.g) | |
c224138d RS |
4716 | return 0; |
4717 | ||
d7206569 RS |
4718 | htab_traverse (from->got_page_entries, mips_elf_add_got_page_entry, &tga); |
4719 | if (!tga.g) | |
c224138d RS |
4720 | return 0; |
4721 | ||
d7206569 | 4722 | mips_elf_replace_bfd_got (abfd, to); |
c224138d RS |
4723 | return 1; |
4724 | } | |
4725 | ||
d7206569 | 4726 | /* Attempt to merge GOT G, which belongs to ABFD. Try to use as much |
f4416af6 AO |
4727 | as possible of the primary got, since it doesn't require explicit |
4728 | dynamic relocations, but don't use bfds that would reference global | |
4729 | symbols out of the addressable range. Failing the primary got, | |
4730 | attempt to merge with the current got, or finish the current got | |
4731 | and then make make the new got current. */ | |
4732 | ||
0a1b45a2 | 4733 | static bool |
d7206569 RS |
4734 | mips_elf_merge_got (bfd *abfd, struct mips_got_info *g, |
4735 | struct mips_elf_got_per_bfd_arg *arg) | |
f4416af6 | 4736 | { |
c224138d RS |
4737 | unsigned int estimate; |
4738 | int result; | |
4739 | ||
476366af | 4740 | if (!mips_elf_resolve_final_got_entries (arg->info, g)) |
0a1b45a2 | 4741 | return false; |
d7206569 | 4742 | |
c224138d RS |
4743 | /* Work out the number of page, local and TLS entries. */ |
4744 | estimate = arg->max_pages; | |
4745 | if (estimate > g->page_gotno) | |
4746 | estimate = g->page_gotno; | |
4747 | estimate += g->local_gotno + g->tls_gotno; | |
0f20cc35 DJ |
4748 | |
4749 | /* We place TLS GOT entries after both locals and globals. The globals | |
4750 | for the primary GOT may overflow the normal GOT size limit, so be | |
4751 | sure not to merge a GOT which requires TLS with the primary GOT in that | |
4752 | case. This doesn't affect non-primary GOTs. */ | |
c224138d | 4753 | estimate += (g->tls_gotno > 0 ? arg->global_count : g->global_gotno); |
143d77c5 | 4754 | |
c224138d | 4755 | if (estimate <= arg->max_count) |
f4416af6 | 4756 | { |
c224138d RS |
4757 | /* If we don't have a primary GOT, use it as |
4758 | a starting point for the primary GOT. */ | |
4759 | if (!arg->primary) | |
4760 | { | |
d7206569 | 4761 | arg->primary = g; |
0a1b45a2 | 4762 | return true; |
c224138d | 4763 | } |
f4416af6 | 4764 | |
c224138d | 4765 | /* Try merging with the primary GOT. */ |
d7206569 | 4766 | result = mips_elf_merge_got_with (abfd, g, arg->primary, arg); |
c224138d RS |
4767 | if (result >= 0) |
4768 | return result; | |
f4416af6 | 4769 | } |
c224138d | 4770 | |
f4416af6 | 4771 | /* If we can merge with the last-created got, do it. */ |
c224138d | 4772 | if (arg->current) |
f4416af6 | 4773 | { |
d7206569 | 4774 | result = mips_elf_merge_got_with (abfd, g, arg->current, arg); |
c224138d RS |
4775 | if (result >= 0) |
4776 | return result; | |
f4416af6 | 4777 | } |
c224138d | 4778 | |
f4416af6 AO |
4779 | /* Well, we couldn't merge, so create a new GOT. Don't check if it |
4780 | fits; if it turns out that it doesn't, we'll get relocation | |
4781 | overflows anyway. */ | |
c224138d RS |
4782 | g->next = arg->current; |
4783 | arg->current = g; | |
0f20cc35 | 4784 | |
0a1b45a2 | 4785 | return true; |
0f20cc35 DJ |
4786 | } |
4787 | ||
72e7511a RS |
4788 | /* ENTRYP is a hash table entry for a mips_got_entry. Set its gotidx |
4789 | to GOTIDX, duplicating the entry if it has already been assigned | |
4790 | an index in a different GOT. */ | |
4791 | ||
0a1b45a2 | 4792 | static bool |
72e7511a RS |
4793 | mips_elf_set_gotidx (void **entryp, long gotidx) |
4794 | { | |
4795 | struct mips_got_entry *entry; | |
4796 | ||
4797 | entry = (struct mips_got_entry *) *entryp; | |
4798 | if (entry->gotidx > 0) | |
4799 | { | |
4800 | struct mips_got_entry *new_entry; | |
4801 | ||
4802 | new_entry = bfd_alloc (entry->abfd, sizeof (*entry)); | |
4803 | if (!new_entry) | |
0a1b45a2 | 4804 | return false; |
72e7511a RS |
4805 | |
4806 | *new_entry = *entry; | |
4807 | *entryp = new_entry; | |
4808 | entry = new_entry; | |
4809 | } | |
4810 | entry->gotidx = gotidx; | |
0a1b45a2 | 4811 | return true; |
72e7511a RS |
4812 | } |
4813 | ||
4814 | /* Set the TLS GOT index for the GOT entry in ENTRYP. DATA points to a | |
4815 | mips_elf_traverse_got_arg in which DATA->value is the size of one | |
4816 | GOT entry. Set DATA->g to null on failure. */ | |
0f20cc35 DJ |
4817 | |
4818 | static int | |
72e7511a | 4819 | mips_elf_initialize_tls_index (void **entryp, void *data) |
0f20cc35 | 4820 | { |
72e7511a RS |
4821 | struct mips_got_entry *entry; |
4822 | struct mips_elf_traverse_got_arg *arg; | |
0f20cc35 DJ |
4823 | |
4824 | /* We're only interested in TLS symbols. */ | |
72e7511a | 4825 | entry = (struct mips_got_entry *) *entryp; |
9ab066b4 | 4826 | if (entry->tls_type == GOT_TLS_NONE) |
0f20cc35 DJ |
4827 | return 1; |
4828 | ||
72e7511a | 4829 | arg = (struct mips_elf_traverse_got_arg *) data; |
6c42ddb9 | 4830 | if (!mips_elf_set_gotidx (entryp, arg->value * arg->g->tls_assigned_gotno)) |
ead49a57 | 4831 | { |
6c42ddb9 RS |
4832 | arg->g = NULL; |
4833 | return 0; | |
f4416af6 AO |
4834 | } |
4835 | ||
ead49a57 | 4836 | /* Account for the entries we've just allocated. */ |
9ab066b4 | 4837 | arg->g->tls_assigned_gotno += mips_tls_got_entries (entry->tls_type); |
f4416af6 AO |
4838 | return 1; |
4839 | } | |
4840 | ||
ab361d49 RS |
4841 | /* A htab_traverse callback for GOT entries, where DATA points to a |
4842 | mips_elf_traverse_got_arg. Set the global_got_area of each global | |
4843 | symbol to DATA->value. */ | |
f4416af6 | 4844 | |
f4416af6 | 4845 | static int |
ab361d49 | 4846 | mips_elf_set_global_got_area (void **entryp, void *data) |
f4416af6 | 4847 | { |
ab361d49 RS |
4848 | struct mips_got_entry *entry; |
4849 | struct mips_elf_traverse_got_arg *arg; | |
f4416af6 | 4850 | |
ab361d49 RS |
4851 | entry = (struct mips_got_entry *) *entryp; |
4852 | arg = (struct mips_elf_traverse_got_arg *) data; | |
4853 | if (entry->abfd != NULL | |
4854 | && entry->symndx == -1 | |
4855 | && entry->d.h->global_got_area != GGA_NONE) | |
4856 | entry->d.h->global_got_area = arg->value; | |
4857 | return 1; | |
4858 | } | |
4859 | ||
4860 | /* A htab_traverse callback for secondary GOT entries, where DATA points | |
4861 | to a mips_elf_traverse_got_arg. Assign GOT indices to global entries | |
4862 | and record the number of relocations they require. DATA->value is | |
72e7511a | 4863 | the size of one GOT entry. Set DATA->g to null on failure. */ |
ab361d49 RS |
4864 | |
4865 | static int | |
4866 | mips_elf_set_global_gotidx (void **entryp, void *data) | |
4867 | { | |
4868 | struct mips_got_entry *entry; | |
4869 | struct mips_elf_traverse_got_arg *arg; | |
0f20cc35 | 4870 | |
ab361d49 RS |
4871 | entry = (struct mips_got_entry *) *entryp; |
4872 | arg = (struct mips_elf_traverse_got_arg *) data; | |
634835ae RS |
4873 | if (entry->abfd != NULL |
4874 | && entry->symndx == -1 | |
4875 | && entry->d.h->global_got_area != GGA_NONE) | |
f4416af6 | 4876 | { |
cb22ccf4 | 4877 | if (!mips_elf_set_gotidx (entryp, arg->value * arg->g->assigned_low_gotno)) |
72e7511a RS |
4878 | { |
4879 | arg->g = NULL; | |
4880 | return 0; | |
4881 | } | |
cb22ccf4 | 4882 | arg->g->assigned_low_gotno += 1; |
72e7511a | 4883 | |
0e1862bb | 4884 | if (bfd_link_pic (arg->info) |
ab361d49 RS |
4885 | || (elf_hash_table (arg->info)->dynamic_sections_created |
4886 | && entry->d.h->root.def_dynamic | |
4887 | && !entry->d.h->root.def_regular)) | |
4888 | arg->g->relocs += 1; | |
f4416af6 AO |
4889 | } |
4890 | ||
4891 | return 1; | |
4892 | } | |
4893 | ||
33bb52fb RS |
4894 | /* A htab_traverse callback for GOT entries for which DATA is the |
4895 | bfd_link_info. Forbid any global symbols from having traditional | |
4896 | lazy-binding stubs. */ | |
4897 | ||
0626d451 | 4898 | static int |
33bb52fb | 4899 | mips_elf_forbid_lazy_stubs (void **entryp, void *data) |
0626d451 | 4900 | { |
33bb52fb RS |
4901 | struct bfd_link_info *info; |
4902 | struct mips_elf_link_hash_table *htab; | |
4903 | struct mips_got_entry *entry; | |
0626d451 | 4904 | |
33bb52fb RS |
4905 | entry = (struct mips_got_entry *) *entryp; |
4906 | info = (struct bfd_link_info *) data; | |
4907 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
4908 | BFD_ASSERT (htab != NULL); |
4909 | ||
0626d451 RS |
4910 | if (entry->abfd != NULL |
4911 | && entry->symndx == -1 | |
33bb52fb | 4912 | && entry->d.h->needs_lazy_stub) |
f4416af6 | 4913 | { |
0a1b45a2 | 4914 | entry->d.h->needs_lazy_stub = false; |
33bb52fb | 4915 | htab->lazy_stub_count--; |
f4416af6 | 4916 | } |
143d77c5 | 4917 | |
f4416af6 AO |
4918 | return 1; |
4919 | } | |
4920 | ||
f4416af6 AO |
4921 | /* Return the offset of an input bfd IBFD's GOT from the beginning of |
4922 | the primary GOT. */ | |
4923 | static bfd_vma | |
9719ad41 | 4924 | mips_elf_adjust_gp (bfd *abfd, struct mips_got_info *g, bfd *ibfd) |
f4416af6 | 4925 | { |
d7206569 | 4926 | if (!g->next) |
f4416af6 AO |
4927 | return 0; |
4928 | ||
0a1b45a2 | 4929 | g = mips_elf_bfd_got (ibfd, false); |
f4416af6 AO |
4930 | if (! g) |
4931 | return 0; | |
4932 | ||
4933 | BFD_ASSERT (g->next); | |
4934 | ||
4935 | g = g->next; | |
143d77c5 | 4936 | |
0f20cc35 DJ |
4937 | return (g->local_gotno + g->global_gotno + g->tls_gotno) |
4938 | * MIPS_ELF_GOT_SIZE (abfd); | |
f4416af6 AO |
4939 | } |
4940 | ||
4941 | /* Turn a single GOT that is too big for 16-bit addressing into | |
4942 | a sequence of GOTs, each one 16-bit addressable. */ | |
4943 | ||
0a1b45a2 | 4944 | static bool |
9719ad41 | 4945 | mips_elf_multi_got (bfd *abfd, struct bfd_link_info *info, |
a8028dd0 | 4946 | asection *got, bfd_size_type pages) |
f4416af6 | 4947 | { |
a8028dd0 | 4948 | struct mips_elf_link_hash_table *htab; |
f4416af6 | 4949 | struct mips_elf_got_per_bfd_arg got_per_bfd_arg; |
ab361d49 | 4950 | struct mips_elf_traverse_got_arg tga; |
a8028dd0 | 4951 | struct mips_got_info *g, *gg; |
33bb52fb | 4952 | unsigned int assign, needed_relocs; |
d7206569 | 4953 | bfd *dynobj, *ibfd; |
f4416af6 | 4954 | |
33bb52fb | 4955 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 | 4956 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
4957 | BFD_ASSERT (htab != NULL); |
4958 | ||
a8028dd0 | 4959 | g = htab->got_info; |
f4416af6 | 4960 | |
f4416af6 AO |
4961 | got_per_bfd_arg.obfd = abfd; |
4962 | got_per_bfd_arg.info = info; | |
f4416af6 AO |
4963 | got_per_bfd_arg.current = NULL; |
4964 | got_per_bfd_arg.primary = NULL; | |
0a44bf69 | 4965 | got_per_bfd_arg.max_count = ((MIPS_ELF_GOT_MAX_SIZE (info) |
f4416af6 | 4966 | / MIPS_ELF_GOT_SIZE (abfd)) |
861fb55a | 4967 | - htab->reserved_gotno); |
c224138d | 4968 | got_per_bfd_arg.max_pages = pages; |
0f20cc35 | 4969 | /* The number of globals that will be included in the primary GOT. |
ab361d49 | 4970 | See the calls to mips_elf_set_global_got_area below for more |
0f20cc35 DJ |
4971 | information. */ |
4972 | got_per_bfd_arg.global_count = g->global_gotno; | |
f4416af6 AO |
4973 | |
4974 | /* Try to merge the GOTs of input bfds together, as long as they | |
4975 | don't seem to exceed the maximum GOT size, choosing one of them | |
4976 | to be the primary GOT. */ | |
c72f2fb2 | 4977 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
d7206569 | 4978 | { |
0a1b45a2 | 4979 | gg = mips_elf_bfd_got (ibfd, false); |
d7206569 | 4980 | if (gg && !mips_elf_merge_got (ibfd, gg, &got_per_bfd_arg)) |
0a1b45a2 | 4981 | return false; |
d7206569 | 4982 | } |
f4416af6 | 4983 | |
0f20cc35 | 4984 | /* If we do not find any suitable primary GOT, create an empty one. */ |
f4416af6 | 4985 | if (got_per_bfd_arg.primary == NULL) |
3dff0dd1 | 4986 | g->next = mips_elf_create_got_info (abfd); |
f4416af6 AO |
4987 | else |
4988 | g->next = got_per_bfd_arg.primary; | |
4989 | g->next->next = got_per_bfd_arg.current; | |
4990 | ||
4991 | /* GG is now the master GOT, and G is the primary GOT. */ | |
4992 | gg = g; | |
4993 | g = g->next; | |
4994 | ||
4995 | /* Map the output bfd to the primary got. That's what we're going | |
4996 | to use for bfds that use GOT16 or GOT_PAGE relocations that we | |
4997 | didn't mark in check_relocs, and we want a quick way to find it. | |
4998 | We can't just use gg->next because we're going to reverse the | |
4999 | list. */ | |
d7206569 | 5000 | mips_elf_replace_bfd_got (abfd, g); |
f4416af6 | 5001 | |
634835ae RS |
5002 | /* Every symbol that is referenced in a dynamic relocation must be |
5003 | present in the primary GOT, so arrange for them to appear after | |
5004 | those that are actually referenced. */ | |
23cc69b6 | 5005 | gg->reloc_only_gotno = gg->global_gotno - g->global_gotno; |
634835ae | 5006 | g->global_gotno = gg->global_gotno; |
f4416af6 | 5007 | |
ab361d49 RS |
5008 | tga.info = info; |
5009 | tga.value = GGA_RELOC_ONLY; | |
5010 | htab_traverse (gg->got_entries, mips_elf_set_global_got_area, &tga); | |
5011 | tga.value = GGA_NORMAL; | |
5012 | htab_traverse (g->got_entries, mips_elf_set_global_got_area, &tga); | |
f4416af6 AO |
5013 | |
5014 | /* Now go through the GOTs assigning them offset ranges. | |
cb22ccf4 | 5015 | [assigned_low_gotno, local_gotno[ will be set to the range of local |
f4416af6 AO |
5016 | entries in each GOT. We can then compute the end of a GOT by |
5017 | adding local_gotno to global_gotno. We reverse the list and make | |
5018 | it circular since then we'll be able to quickly compute the | |
5019 | beginning of a GOT, by computing the end of its predecessor. To | |
5020 | avoid special cases for the primary GOT, while still preserving | |
5021 | assertions that are valid for both single- and multi-got links, | |
5022 | we arrange for the main got struct to have the right number of | |
5023 | global entries, but set its local_gotno such that the initial | |
5024 | offset of the primary GOT is zero. Remember that the primary GOT | |
5025 | will become the last item in the circular linked list, so it | |
5026 | points back to the master GOT. */ | |
5027 | gg->local_gotno = -g->global_gotno; | |
5028 | gg->global_gotno = g->global_gotno; | |
0f20cc35 | 5029 | gg->tls_gotno = 0; |
f4416af6 AO |
5030 | assign = 0; |
5031 | gg->next = gg; | |
5032 | ||
5033 | do | |
5034 | { | |
5035 | struct mips_got_info *gn; | |
5036 | ||
861fb55a | 5037 | assign += htab->reserved_gotno; |
cb22ccf4 | 5038 | g->assigned_low_gotno = assign; |
c224138d RS |
5039 | g->local_gotno += assign; |
5040 | g->local_gotno += (pages < g->page_gotno ? pages : g->page_gotno); | |
cb22ccf4 | 5041 | g->assigned_high_gotno = g->local_gotno - 1; |
0f20cc35 DJ |
5042 | assign = g->local_gotno + g->global_gotno + g->tls_gotno; |
5043 | ||
ead49a57 RS |
5044 | /* Take g out of the direct list, and push it onto the reversed |
5045 | list that gg points to. g->next is guaranteed to be nonnull after | |
5046 | this operation, as required by mips_elf_initialize_tls_index. */ | |
5047 | gn = g->next; | |
5048 | g->next = gg->next; | |
5049 | gg->next = g; | |
5050 | ||
0f20cc35 DJ |
5051 | /* Set up any TLS entries. We always place the TLS entries after |
5052 | all non-TLS entries. */ | |
5053 | g->tls_assigned_gotno = g->local_gotno + g->global_gotno; | |
72e7511a RS |
5054 | tga.g = g; |
5055 | tga.value = MIPS_ELF_GOT_SIZE (abfd); | |
5056 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, &tga); | |
5057 | if (!tga.g) | |
0a1b45a2 | 5058 | return false; |
1fd20d70 | 5059 | BFD_ASSERT (g->tls_assigned_gotno == assign); |
f4416af6 | 5060 | |
ead49a57 | 5061 | /* Move onto the next GOT. It will be a secondary GOT if nonull. */ |
f4416af6 | 5062 | g = gn; |
0626d451 | 5063 | |
33bb52fb RS |
5064 | /* Forbid global symbols in every non-primary GOT from having |
5065 | lazy-binding stubs. */ | |
0626d451 | 5066 | if (g) |
33bb52fb | 5067 | htab_traverse (g->got_entries, mips_elf_forbid_lazy_stubs, info); |
f4416af6 AO |
5068 | } |
5069 | while (g); | |
5070 | ||
59b08994 | 5071 | got->size = assign * MIPS_ELF_GOT_SIZE (abfd); |
33bb52fb RS |
5072 | |
5073 | needed_relocs = 0; | |
33bb52fb RS |
5074 | for (g = gg->next; g && g->next != gg; g = g->next) |
5075 | { | |
5076 | unsigned int save_assign; | |
5077 | ||
ab361d49 RS |
5078 | /* Assign offsets to global GOT entries and count how many |
5079 | relocations they need. */ | |
cb22ccf4 KCY |
5080 | save_assign = g->assigned_low_gotno; |
5081 | g->assigned_low_gotno = g->local_gotno; | |
ab361d49 RS |
5082 | tga.info = info; |
5083 | tga.value = MIPS_ELF_GOT_SIZE (abfd); | |
5084 | tga.g = g; | |
5085 | htab_traverse (g->got_entries, mips_elf_set_global_gotidx, &tga); | |
72e7511a | 5086 | if (!tga.g) |
0a1b45a2 | 5087 | return false; |
cb22ccf4 KCY |
5088 | BFD_ASSERT (g->assigned_low_gotno == g->local_gotno + g->global_gotno); |
5089 | g->assigned_low_gotno = save_assign; | |
72e7511a | 5090 | |
0e1862bb | 5091 | if (bfd_link_pic (info)) |
33bb52fb | 5092 | { |
cb22ccf4 KCY |
5093 | g->relocs += g->local_gotno - g->assigned_low_gotno; |
5094 | BFD_ASSERT (g->assigned_low_gotno == g->next->local_gotno | |
33bb52fb RS |
5095 | + g->next->global_gotno |
5096 | + g->next->tls_gotno | |
861fb55a | 5097 | + htab->reserved_gotno); |
33bb52fb | 5098 | } |
ab361d49 | 5099 | needed_relocs += g->relocs; |
33bb52fb | 5100 | } |
ab361d49 | 5101 | needed_relocs += g->relocs; |
33bb52fb RS |
5102 | |
5103 | if (needed_relocs) | |
5104 | mips_elf_allocate_dynamic_relocations (dynobj, info, | |
5105 | needed_relocs); | |
143d77c5 | 5106 | |
0a1b45a2 | 5107 | return true; |
f4416af6 | 5108 | } |
143d77c5 | 5109 | |
b49e97c9 TS |
5110 | \f |
5111 | /* Returns the first relocation of type r_type found, beginning with | |
5112 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ | |
5113 | ||
5114 | static const Elf_Internal_Rela * | |
9719ad41 RS |
5115 | mips_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type, |
5116 | const Elf_Internal_Rela *relocation, | |
5117 | const Elf_Internal_Rela *relend) | |
b49e97c9 | 5118 | { |
c000e262 TS |
5119 | unsigned long r_symndx = ELF_R_SYM (abfd, relocation->r_info); |
5120 | ||
b49e97c9 TS |
5121 | while (relocation < relend) |
5122 | { | |
c000e262 TS |
5123 | if (ELF_R_TYPE (abfd, relocation->r_info) == r_type |
5124 | && ELF_R_SYM (abfd, relocation->r_info) == r_symndx) | |
b49e97c9 TS |
5125 | return relocation; |
5126 | ||
5127 | ++relocation; | |
5128 | } | |
5129 | ||
5130 | /* We didn't find it. */ | |
b49e97c9 TS |
5131 | return NULL; |
5132 | } | |
5133 | ||
020d7251 | 5134 | /* Return whether an input relocation is against a local symbol. */ |
b49e97c9 | 5135 | |
0a1b45a2 | 5136 | static bool |
9719ad41 RS |
5137 | mips_elf_local_relocation_p (bfd *input_bfd, |
5138 | const Elf_Internal_Rela *relocation, | |
020d7251 | 5139 | asection **local_sections) |
b49e97c9 TS |
5140 | { |
5141 | unsigned long r_symndx; | |
5142 | Elf_Internal_Shdr *symtab_hdr; | |
b49e97c9 TS |
5143 | size_t extsymoff; |
5144 | ||
5145 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
5146 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5147 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; | |
5148 | ||
5149 | if (r_symndx < extsymoff) | |
0a1b45a2 | 5150 | return true; |
b49e97c9 | 5151 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) |
0a1b45a2 | 5152 | return true; |
b49e97c9 | 5153 | |
0a1b45a2 | 5154 | return false; |
b49e97c9 TS |
5155 | } |
5156 | \f | |
5157 | /* Sign-extend VALUE, which has the indicated number of BITS. */ | |
5158 | ||
a7ebbfdf | 5159 | bfd_vma |
9719ad41 | 5160 | _bfd_mips_elf_sign_extend (bfd_vma value, int bits) |
b49e97c9 TS |
5161 | { |
5162 | if (value & ((bfd_vma) 1 << (bits - 1))) | |
5163 | /* VALUE is negative. */ | |
5164 | value |= ((bfd_vma) - 1) << bits; | |
5165 | ||
5166 | return value; | |
5167 | } | |
5168 | ||
5169 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
4cc11e76 | 5170 | range expressible by a signed number with the indicated number of |
b49e97c9 TS |
5171 | BITS. */ |
5172 | ||
0a1b45a2 | 5173 | static bool |
9719ad41 | 5174 | mips_elf_overflow_p (bfd_vma value, int bits) |
b49e97c9 TS |
5175 | { |
5176 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
5177 | ||
5178 | if (svalue > (1 << (bits - 1)) - 1) | |
5179 | /* The value is too big. */ | |
0a1b45a2 | 5180 | return true; |
b49e97c9 TS |
5181 | else if (svalue < -(1 << (bits - 1))) |
5182 | /* The value is too small. */ | |
0a1b45a2 | 5183 | return true; |
b49e97c9 TS |
5184 | |
5185 | /* All is well. */ | |
0a1b45a2 | 5186 | return false; |
b49e97c9 TS |
5187 | } |
5188 | ||
5189 | /* Calculate the %high function. */ | |
5190 | ||
5191 | static bfd_vma | |
9719ad41 | 5192 | mips_elf_high (bfd_vma value) |
b49e97c9 TS |
5193 | { |
5194 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; | |
5195 | } | |
5196 | ||
5197 | /* Calculate the %higher function. */ | |
5198 | ||
5199 | static bfd_vma | |
9719ad41 | 5200 | mips_elf_higher (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
5201 | { |
5202 | #ifdef BFD64 | |
5203 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; | |
5204 | #else | |
5205 | abort (); | |
c5ae1840 | 5206 | return MINUS_ONE; |
b49e97c9 TS |
5207 | #endif |
5208 | } | |
5209 | ||
5210 | /* Calculate the %highest function. */ | |
5211 | ||
5212 | static bfd_vma | |
9719ad41 | 5213 | mips_elf_highest (bfd_vma value ATTRIBUTE_UNUSED) |
b49e97c9 TS |
5214 | { |
5215 | #ifdef BFD64 | |
b15e6682 | 5216 | return ((value + (((bfd_vma) 0x8000 << 32) | 0x80008000)) >> 48) & 0xffff; |
b49e97c9 TS |
5217 | #else |
5218 | abort (); | |
c5ae1840 | 5219 | return MINUS_ONE; |
b49e97c9 TS |
5220 | #endif |
5221 | } | |
5222 | \f | |
5223 | /* Create the .compact_rel section. */ | |
5224 | ||
0a1b45a2 | 5225 | static bool |
9719ad41 RS |
5226 | mips_elf_create_compact_rel_section |
5227 | (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
5228 | { |
5229 | flagword flags; | |
5230 | register asection *s; | |
5231 | ||
3d4d4302 | 5232 | if (bfd_get_linker_section (abfd, ".compact_rel") == NULL) |
b49e97c9 TS |
5233 | { |
5234 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
5235 | | SEC_READONLY); | |
5236 | ||
3d4d4302 | 5237 | s = bfd_make_section_anyway_with_flags (abfd, ".compact_rel", flags); |
b49e97c9 | 5238 | if (s == NULL |
fd361982 | 5239 | || !bfd_set_section_alignment (s, MIPS_ELF_LOG_FILE_ALIGN (abfd))) |
0a1b45a2 | 5240 | return false; |
b49e97c9 | 5241 | |
eea6121a | 5242 | s->size = sizeof (Elf32_External_compact_rel); |
b49e97c9 TS |
5243 | } |
5244 | ||
0a1b45a2 | 5245 | return true; |
b49e97c9 TS |
5246 | } |
5247 | ||
5248 | /* Create the .got section to hold the global offset table. */ | |
5249 | ||
0a1b45a2 | 5250 | static bool |
23cc69b6 | 5251 | mips_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
5252 | { |
5253 | flagword flags; | |
5254 | register asection *s; | |
5255 | struct elf_link_hash_entry *h; | |
14a793b2 | 5256 | struct bfd_link_hash_entry *bh; |
0a44bf69 RS |
5257 | struct mips_elf_link_hash_table *htab; |
5258 | ||
5259 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 5260 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
5261 | |
5262 | /* This function may be called more than once. */ | |
ce558b89 | 5263 | if (htab->root.sgot) |
0a1b45a2 | 5264 | return true; |
b49e97c9 TS |
5265 | |
5266 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
5267 | | SEC_LINKER_CREATED); | |
5268 | ||
72b4917c TS |
5269 | /* We have to use an alignment of 2**4 here because this is hardcoded |
5270 | in the function stub generation and in the linker script. */ | |
87e0a731 | 5271 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
b49e97c9 | 5272 | if (s == NULL |
fd361982 | 5273 | || !bfd_set_section_alignment (s, 4)) |
0a1b45a2 | 5274 | return false; |
ce558b89 | 5275 | htab->root.sgot = s; |
b49e97c9 TS |
5276 | |
5277 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the | |
5278 | linker script because we don't want to define the symbol if we | |
5279 | are not creating a global offset table. */ | |
14a793b2 | 5280 | bh = NULL; |
b49e97c9 TS |
5281 | if (! (_bfd_generic_link_add_one_symbol |
5282 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
0a1b45a2 AM |
5283 | 0, NULL, false, get_elf_backend_data (abfd)->collect, &bh))) |
5284 | return false; | |
14a793b2 AM |
5285 | |
5286 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
5287 | h->non_elf = 0; |
5288 | h->def_regular = 1; | |
b49e97c9 | 5289 | h->type = STT_OBJECT; |
2f9efdfc | 5290 | h->other = (h->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; |
d329bcd1 | 5291 | elf_hash_table (info)->hgot = h; |
b49e97c9 | 5292 | |
0e1862bb | 5293 | if (bfd_link_pic (info) |
c152c796 | 5294 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
0a1b45a2 | 5295 | return false; |
b49e97c9 | 5296 | |
3dff0dd1 | 5297 | htab->got_info = mips_elf_create_got_info (abfd); |
f0abc2a1 | 5298 | mips_elf_section_data (s)->elf.this_hdr.sh_flags |
b49e97c9 TS |
5299 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
5300 | ||
861fb55a | 5301 | /* We also need a .got.plt section when generating PLTs. */ |
87e0a731 AM |
5302 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", |
5303 | SEC_ALLOC | SEC_LOAD | |
5304 | | SEC_HAS_CONTENTS | |
5305 | | SEC_IN_MEMORY | |
5306 | | SEC_LINKER_CREATED); | |
861fb55a | 5307 | if (s == NULL) |
0a1b45a2 | 5308 | return false; |
ce558b89 | 5309 | htab->root.sgotplt = s; |
0a44bf69 | 5310 | |
0a1b45a2 | 5311 | return true; |
b49e97c9 | 5312 | } |
b49e97c9 | 5313 | \f |
0a44bf69 RS |
5314 | /* Return true if H refers to the special VxWorks __GOTT_BASE__ or |
5315 | __GOTT_INDEX__ symbols. These symbols are only special for | |
5316 | shared objects; they are not used in executables. */ | |
5317 | ||
0a1b45a2 | 5318 | static bool |
0a44bf69 RS |
5319 | is_gott_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *h) |
5320 | { | |
90c14f0c | 5321 | return (mips_elf_hash_table (info)->root.target_os == is_vxworks |
0e1862bb | 5322 | && bfd_link_pic (info) |
0a44bf69 RS |
5323 | && (strcmp (h->root.root.string, "__GOTT_BASE__") == 0 |
5324 | || strcmp (h->root.root.string, "__GOTT_INDEX__") == 0)); | |
5325 | } | |
861fb55a DJ |
5326 | |
5327 | /* Return TRUE if a relocation of type R_TYPE from INPUT_BFD might | |
5328 | require an la25 stub. See also mips_elf_local_pic_function_p, | |
5329 | which determines whether the destination function ever requires a | |
5330 | stub. */ | |
5331 | ||
0a1b45a2 | 5332 | static bool |
8f0c309a | 5333 | mips_elf_relocation_needs_la25_stub (bfd *input_bfd, int r_type, |
0a1b45a2 | 5334 | bool target_is_16_bit_code_p) |
861fb55a DJ |
5335 | { |
5336 | /* We specifically ignore branches and jumps from EF_PIC objects, | |
5337 | where the onus is on the compiler or programmer to perform any | |
5338 | necessary initialization of $25. Sometimes such initialization | |
5339 | is unnecessary; for example, -mno-shared functions do not use | |
5340 | the incoming value of $25, and may therefore be called directly. */ | |
5341 | if (PIC_OBJECT_P (input_bfd)) | |
0a1b45a2 | 5342 | return false; |
861fb55a DJ |
5343 | |
5344 | switch (r_type) | |
5345 | { | |
5346 | case R_MIPS_26: | |
5347 | case R_MIPS_PC16: | |
7361da2c AB |
5348 | case R_MIPS_PC21_S2: |
5349 | case R_MIPS_PC26_S2: | |
df58fc94 RS |
5350 | case R_MICROMIPS_26_S1: |
5351 | case R_MICROMIPS_PC7_S1: | |
5352 | case R_MICROMIPS_PC10_S1: | |
5353 | case R_MICROMIPS_PC16_S1: | |
5354 | case R_MICROMIPS_PC23_S2: | |
0a1b45a2 | 5355 | return true; |
861fb55a | 5356 | |
8f0c309a CLT |
5357 | case R_MIPS16_26: |
5358 | return !target_is_16_bit_code_p; | |
5359 | ||
861fb55a | 5360 | default: |
0a1b45a2 | 5361 | return false; |
861fb55a DJ |
5362 | } |
5363 | } | |
0a44bf69 | 5364 | \f |
47275900 MR |
5365 | /* Obtain the field relocated by RELOCATION. */ |
5366 | ||
5367 | static bfd_vma | |
5368 | mips_elf_obtain_contents (reloc_howto_type *howto, | |
5369 | const Elf_Internal_Rela *relocation, | |
5370 | bfd *input_bfd, bfd_byte *contents) | |
5371 | { | |
5372 | bfd_vma x = 0; | |
5373 | bfd_byte *location = contents + relocation->r_offset; | |
5374 | unsigned int size = bfd_get_reloc_size (howto); | |
5375 | ||
5376 | /* Obtain the bytes. */ | |
5377 | if (size != 0) | |
5378 | x = bfd_get (8 * size, input_bfd, location); | |
5379 | ||
5380 | return x; | |
5381 | } | |
5382 | ||
98e10ffa MR |
5383 | /* Store the field relocated by RELOCATION. */ |
5384 | ||
5385 | static void | |
5386 | mips_elf_store_contents (reloc_howto_type *howto, | |
5387 | const Elf_Internal_Rela *relocation, | |
5388 | bfd *input_bfd, bfd_byte *contents, bfd_vma x) | |
5389 | { | |
5390 | bfd_byte *location = contents + relocation->r_offset; | |
5391 | unsigned int size = bfd_get_reloc_size (howto); | |
5392 | ||
5393 | /* Put the value into the output. */ | |
5394 | if (size != 0) | |
5395 | bfd_put (8 * size, input_bfd, x, location); | |
5396 | } | |
5397 | ||
47275900 MR |
5398 | /* Try to patch a load from GOT instruction in CONTENTS pointed to by |
5399 | RELOCATION described by HOWTO, with a move of 0 to the load target | |
5400 | register, returning TRUE if that is successful and FALSE otherwise. | |
5401 | If DOIT is FALSE, then only determine it patching is possible and | |
5402 | return status without actually changing CONTENTS. | |
5403 | */ | |
5404 | ||
0a1b45a2 | 5405 | static bool |
47275900 MR |
5406 | mips_elf_nullify_got_load (bfd *input_bfd, bfd_byte *contents, |
5407 | const Elf_Internal_Rela *relocation, | |
0a1b45a2 | 5408 | reloc_howto_type *howto, bool doit) |
47275900 MR |
5409 | { |
5410 | int r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5411 | bfd_byte *location = contents + relocation->r_offset; | |
0a1b45a2 | 5412 | bool nullified = true; |
47275900 MR |
5413 | bfd_vma x; |
5414 | ||
0a1b45a2 | 5415 | _bfd_mips_elf_reloc_unshuffle (input_bfd, r_type, false, location); |
47275900 MR |
5416 | |
5417 | /* Obtain the current value. */ | |
5418 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
5419 | ||
5420 | /* Note that in the unshuffled MIPS16 encoding RX is at bits [21:19] | |
5421 | while RY is at bits [18:16] of the combined 32-bit instruction word. */ | |
5422 | if (mips16_reloc_p (r_type) | |
5423 | && (((x >> 22) & 0x3ff) == 0x3d3 /* LW */ | |
5424 | || ((x >> 22) & 0x3ff) == 0x3c7)) /* LD */ | |
227d539b | 5425 | x = (0x3cdU << 22) | (x & (7 << 16)) << 3; /* LI */ |
47275900 MR |
5426 | else if (micromips_reloc_p (r_type) |
5427 | && ((x >> 26) & 0x37) == 0x37) /* LW/LD */ | |
5428 | x = (0xc << 26) | (x & (0x1f << 21)); /* ADDIU */ | |
5429 | else if (((x >> 26) & 0x3f) == 0x23 /* LW */ | |
5430 | || ((x >> 26) & 0x3f) == 0x37) /* LD */ | |
5431 | x = (0x9 << 26) | (x & (0x1f << 16)); /* ADDIU */ | |
5432 | else | |
0a1b45a2 | 5433 | nullified = false; |
47275900 MR |
5434 | |
5435 | /* Put the value into the output. */ | |
5436 | if (doit && nullified) | |
5437 | mips_elf_store_contents (howto, relocation, input_bfd, contents, x); | |
5438 | ||
0a1b45a2 | 5439 | _bfd_mips_elf_reloc_shuffle (input_bfd, r_type, false, location); |
47275900 MR |
5440 | |
5441 | return nullified; | |
5442 | } | |
5443 | ||
b49e97c9 TS |
5444 | /* Calculate the value produced by the RELOCATION (which comes from |
5445 | the INPUT_BFD). The ADDEND is the addend to use for this | |
5446 | RELOCATION; RELOCATION->R_ADDEND is ignored. | |
5447 | ||
5448 | The result of the relocation calculation is stored in VALUEP. | |
38a7df63 | 5449 | On exit, set *CROSS_MODE_JUMP_P to true if the relocation field |
df58fc94 | 5450 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 TS |
5451 | |
5452 | This function returns bfd_reloc_continue if the caller need take no | |
5453 | further action regarding this relocation, bfd_reloc_notsupported if | |
5454 | something goes dramatically wrong, bfd_reloc_overflow if an | |
5455 | overflow occurs, and bfd_reloc_ok to indicate success. */ | |
5456 | ||
5457 | static bfd_reloc_status_type | |
9719ad41 | 5458 | mips_elf_calculate_relocation (bfd *abfd, bfd *input_bfd, |
47275900 | 5459 | asection *input_section, bfd_byte *contents, |
9719ad41 RS |
5460 | struct bfd_link_info *info, |
5461 | const Elf_Internal_Rela *relocation, | |
5462 | bfd_vma addend, reloc_howto_type *howto, | |
5463 | Elf_Internal_Sym *local_syms, | |
5464 | asection **local_sections, bfd_vma *valuep, | |
38a7df63 | 5465 | const char **namep, |
0a1b45a2 AM |
5466 | bool *cross_mode_jump_p, |
5467 | bool save_addend) | |
b49e97c9 TS |
5468 | { |
5469 | /* The eventual value we will return. */ | |
5470 | bfd_vma value; | |
5471 | /* The address of the symbol against which the relocation is | |
5472 | occurring. */ | |
5473 | bfd_vma symbol = 0; | |
5474 | /* The final GP value to be used for the relocatable, executable, or | |
5475 | shared object file being produced. */ | |
0a61c8c2 | 5476 | bfd_vma gp; |
b49e97c9 TS |
5477 | /* The place (section offset or address) of the storage unit being |
5478 | relocated. */ | |
5479 | bfd_vma p; | |
5480 | /* The value of GP used to create the relocatable object. */ | |
0a61c8c2 | 5481 | bfd_vma gp0; |
b49e97c9 TS |
5482 | /* The offset into the global offset table at which the address of |
5483 | the relocation entry symbol, adjusted by the addend, resides | |
5484 | during execution. */ | |
5485 | bfd_vma g = MINUS_ONE; | |
5486 | /* The section in which the symbol referenced by the relocation is | |
5487 | located. */ | |
5488 | asection *sec = NULL; | |
5489 | struct mips_elf_link_hash_entry *h = NULL; | |
b34976b6 | 5490 | /* TRUE if the symbol referred to by this relocation is a local |
b49e97c9 | 5491 | symbol. */ |
0a1b45a2 | 5492 | bool local_p, was_local_p; |
77434823 MR |
5493 | /* TRUE if the symbol referred to by this relocation is a section |
5494 | symbol. */ | |
0a1b45a2 | 5495 | bool section_p = false; |
b34976b6 | 5496 | /* TRUE if the symbol referred to by this relocation is "_gp_disp". */ |
0a1b45a2 | 5497 | bool gp_disp_p = false; |
bbe506e8 TS |
5498 | /* TRUE if the symbol referred to by this relocation is |
5499 | "__gnu_local_gp". */ | |
0a1b45a2 | 5500 | bool gnu_local_gp_p = false; |
b49e97c9 TS |
5501 | Elf_Internal_Shdr *symtab_hdr; |
5502 | size_t extsymoff; | |
5503 | unsigned long r_symndx; | |
5504 | int r_type; | |
b34976b6 | 5505 | /* TRUE if overflow occurred during the calculation of the |
b49e97c9 | 5506 | relocation value. */ |
0a1b45a2 | 5507 | bool overflowed_p; |
b34976b6 | 5508 | /* TRUE if this relocation refers to a MIPS16 function. */ |
0a1b45a2 AM |
5509 | bool target_is_16_bit_code_p = false; |
5510 | bool target_is_micromips_code_p = false; | |
0a44bf69 RS |
5511 | struct mips_elf_link_hash_table *htab; |
5512 | bfd *dynobj; | |
0a1b45a2 | 5513 | bool resolved_to_zero; |
0a44bf69 RS |
5514 | |
5515 | dynobj = elf_hash_table (info)->dynobj; | |
5516 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 5517 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
5518 | |
5519 | /* Parse the relocation. */ | |
5520 | r_symndx = ELF_R_SYM (input_bfd, relocation->r_info); | |
5521 | r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
5522 | p = (input_section->output_section->vma | |
5523 | + input_section->output_offset | |
5524 | + relocation->r_offset); | |
5525 | ||
5526 | /* Assume that there will be no overflow. */ | |
0a1b45a2 | 5527 | overflowed_p = false; |
b49e97c9 TS |
5528 | |
5529 | /* Figure out whether or not the symbol is local, and get the offset | |
5530 | used in the array of hash table entries. */ | |
5531 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5532 | local_p = mips_elf_local_relocation_p (input_bfd, relocation, | |
020d7251 | 5533 | local_sections); |
bce03d3d | 5534 | was_local_p = local_p; |
b49e97c9 TS |
5535 | if (! elf_bad_symtab (input_bfd)) |
5536 | extsymoff = symtab_hdr->sh_info; | |
5537 | else | |
5538 | { | |
5539 | /* The symbol table does not follow the rule that local symbols | |
5540 | must come before globals. */ | |
5541 | extsymoff = 0; | |
5542 | } | |
5543 | ||
5544 | /* Figure out the value of the symbol. */ | |
5545 | if (local_p) | |
5546 | { | |
0a1b45a2 | 5547 | bool micromips_p = MICROMIPS_P (abfd); |
b49e97c9 TS |
5548 | Elf_Internal_Sym *sym; |
5549 | ||
5550 | sym = local_syms + r_symndx; | |
5551 | sec = local_sections[r_symndx]; | |
5552 | ||
77434823 MR |
5553 | section_p = ELF_ST_TYPE (sym->st_info) == STT_SECTION; |
5554 | ||
b49e97c9 | 5555 | symbol = sec->output_section->vma + sec->output_offset; |
77434823 | 5556 | if (!section_p || (sec->flags & SEC_MERGE)) |
b49e97c9 | 5557 | symbol += sym->st_value; |
77434823 | 5558 | if ((sec->flags & SEC_MERGE) && section_p) |
d4df96e6 L |
5559 | { |
5560 | addend = _bfd_elf_rel_local_sym (abfd, sym, &sec, addend); | |
5561 | addend -= symbol; | |
5562 | addend += sec->output_section->vma + sec->output_offset; | |
5563 | } | |
b49e97c9 | 5564 | |
df58fc94 RS |
5565 | /* MIPS16/microMIPS text labels should be treated as odd. */ |
5566 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
b49e97c9 TS |
5567 | ++symbol; |
5568 | ||
5569 | /* Record the name of this symbol, for our caller. */ | |
5570 | *namep = bfd_elf_string_from_elf_section (input_bfd, | |
5571 | symtab_hdr->sh_link, | |
5572 | sym->st_name); | |
ceab86af | 5573 | if (*namep == NULL || **namep == '\0') |
fd361982 | 5574 | *namep = bfd_section_name (sec); |
b49e97c9 | 5575 | |
9d862524 | 5576 | /* For relocations against a section symbol and ones against no |
07d6d2b8 | 5577 | symbol (absolute relocations) infer the ISA mode from the addend. */ |
9d862524 MR |
5578 | if (section_p || r_symndx == STN_UNDEF) |
5579 | { | |
5580 | target_is_16_bit_code_p = (addend & 1) && !micromips_p; | |
5581 | target_is_micromips_code_p = (addend & 1) && micromips_p; | |
5582 | } | |
5583 | /* For relocations against an absolute symbol infer the ISA mode | |
07d6d2b8 | 5584 | from the value of the symbol plus addend. */ |
9d862524 MR |
5585 | else if (bfd_is_abs_section (sec)) |
5586 | { | |
5587 | target_is_16_bit_code_p = ((symbol + addend) & 1) && !micromips_p; | |
5588 | target_is_micromips_code_p = ((symbol + addend) & 1) && micromips_p; | |
5589 | } | |
5590 | /* Otherwise just use the regular symbol annotation available. */ | |
5591 | else | |
5592 | { | |
5593 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (sym->st_other); | |
5594 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (sym->st_other); | |
5595 | } | |
b49e97c9 TS |
5596 | } |
5597 | else | |
5598 | { | |
560e09e9 NC |
5599 | /* ??? Could we use RELOC_FOR_GLOBAL_SYMBOL here ? */ |
5600 | ||
b49e97c9 TS |
5601 | /* For global symbols we look up the symbol in the hash-table. */ |
5602 | h = ((struct mips_elf_link_hash_entry *) | |
5603 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); | |
5604 | /* Find the real hash-table entry for this symbol. */ | |
5605 | while (h->root.root.type == bfd_link_hash_indirect | |
5606 | || h->root.root.type == bfd_link_hash_warning) | |
5607 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
5608 | ||
5609 | /* Record the name of this symbol, for our caller. */ | |
5610 | *namep = h->root.root.root.string; | |
5611 | ||
5612 | /* See if this is the special _gp_disp symbol. Note that such a | |
5613 | symbol must always be a global symbol. */ | |
560e09e9 | 5614 | if (strcmp (*namep, "_gp_disp") == 0 |
b49e97c9 TS |
5615 | && ! NEWABI_P (input_bfd)) |
5616 | { | |
5617 | /* Relocations against _gp_disp are permitted only with | |
5618 | R_MIPS_HI16 and R_MIPS_LO16 relocations. */ | |
738e5348 | 5619 | if (!hi16_reloc_p (r_type) && !lo16_reloc_p (r_type)) |
b49e97c9 TS |
5620 | return bfd_reloc_notsupported; |
5621 | ||
0a1b45a2 | 5622 | gp_disp_p = true; |
b49e97c9 | 5623 | } |
bbe506e8 TS |
5624 | /* See if this is the special _gp symbol. Note that such a |
5625 | symbol must always be a global symbol. */ | |
5626 | else if (strcmp (*namep, "__gnu_local_gp") == 0) | |
0a1b45a2 | 5627 | gnu_local_gp_p = true; |
bbe506e8 TS |
5628 | |
5629 | ||
b49e97c9 TS |
5630 | /* If this symbol is defined, calculate its address. Note that |
5631 | _gp_disp is a magic symbol, always implicitly defined by the | |
5632 | linker, so it's inappropriate to check to see whether or not | |
5633 | its defined. */ | |
5634 | else if ((h->root.root.type == bfd_link_hash_defined | |
5635 | || h->root.root.type == bfd_link_hash_defweak) | |
5636 | && h->root.root.u.def.section) | |
5637 | { | |
5638 | sec = h->root.root.u.def.section; | |
5639 | if (sec->output_section) | |
5640 | symbol = (h->root.root.u.def.value | |
5641 | + sec->output_section->vma | |
5642 | + sec->output_offset); | |
5643 | else | |
5644 | symbol = h->root.root.u.def.value; | |
5645 | } | |
5646 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
5647 | /* We allow relocations against undefined weak symbols, giving | |
5648 | it the value zero, so that you can undefined weak functions | |
5649 | and check to see if they exist by looking at their | |
5650 | addresses. */ | |
5651 | symbol = 0; | |
59c2e50f | 5652 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
b49e97c9 TS |
5653 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
5654 | symbol = 0; | |
a4d0f181 TS |
5655 | else if (strcmp (*namep, SGI_COMPAT (input_bfd) |
5656 | ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING") == 0) | |
b49e97c9 TS |
5657 | { |
5658 | /* If this is a dynamic link, we should have created a | |
5659 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol | |
de194d85 | 5660 | in _bfd_mips_elf_create_dynamic_sections. |
b49e97c9 TS |
5661 | Otherwise, we should define the symbol with a value of 0. |
5662 | FIXME: It should probably get into the symbol table | |
5663 | somehow as well. */ | |
0e1862bb | 5664 | BFD_ASSERT (! bfd_link_pic (info)); |
b49e97c9 TS |
5665 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); |
5666 | symbol = 0; | |
5667 | } | |
5e2b0d47 NC |
5668 | else if (ELF_MIPS_IS_OPTIONAL (h->root.other)) |
5669 | { | |
5670 | /* This is an optional symbol - an Irix specific extension to the | |
5671 | ELF spec. Ignore it for now. | |
5672 | XXX - FIXME - there is more to the spec for OPTIONAL symbols | |
5673 | than simply ignoring them, but we do not handle this for now. | |
5674 | For information see the "64-bit ELF Object File Specification" | |
5675 | which is available from here: | |
5676 | http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf */ | |
5677 | symbol = 0; | |
5678 | } | |
b49e97c9 TS |
5679 | else |
5680 | { | |
0a1b45a2 AM |
5681 | bool reject_undefined |
5682 | = ((info->unresolved_syms_in_objects == RM_DIAGNOSE | |
5683 | && !info->warn_unresolved_syms) | |
5684 | || ELF_ST_VISIBILITY (h->root.other) != STV_DEFAULT); | |
dfb93f11 | 5685 | |
95a51568 | 5686 | info->callbacks->undefined_symbol |
1a72702b | 5687 | (info, h->root.root.root.string, input_bfd, |
dfb93f11 JC |
5688 | input_section, relocation->r_offset, reject_undefined); |
5689 | ||
5690 | if (reject_undefined) | |
5691 | return bfd_reloc_undefined; | |
5692 | ||
5693 | symbol = 0; | |
b49e97c9 TS |
5694 | } |
5695 | ||
30c09090 | 5696 | target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (h->root.other); |
1bbce132 | 5697 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (h->root.other); |
b49e97c9 TS |
5698 | } |
5699 | ||
738e5348 RS |
5700 | /* If this is a reference to a 16-bit function with a stub, we need |
5701 | to redirect the relocation to the stub unless: | |
5702 | ||
5703 | (a) the relocation is for a MIPS16 JAL; | |
5704 | ||
5705 | (b) the relocation is for a MIPS16 PIC call, and there are no | |
5706 | non-MIPS16 uses of the GOT slot; or | |
5707 | ||
5708 | (c) the section allows direct references to MIPS16 functions. */ | |
5709 | if (r_type != R_MIPS16_26 | |
0e1862bb | 5710 | && !bfd_link_relocatable (info) |
738e5348 RS |
5711 | && ((h != NULL |
5712 | && h->fn_stub != NULL | |
5713 | && (r_type != R_MIPS16_CALL16 || h->need_fn_stub)) | |
b9d58d71 | 5714 | || (local_p |
698600e4 AM |
5715 | && mips_elf_tdata (input_bfd)->local_stubs != NULL |
5716 | && mips_elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) | |
738e5348 | 5717 | && !section_allows_mips16_refs_p (input_section)) |
b49e97c9 TS |
5718 | { |
5719 | /* This is a 32- or 64-bit call to a 16-bit function. We should | |
5720 | have already noticed that we were going to need the | |
5721 | stub. */ | |
5722 | if (local_p) | |
8f0c309a | 5723 | { |
698600e4 | 5724 | sec = mips_elf_tdata (input_bfd)->local_stubs[r_symndx]; |
8f0c309a CLT |
5725 | value = 0; |
5726 | } | |
b49e97c9 TS |
5727 | else |
5728 | { | |
5729 | BFD_ASSERT (h->need_fn_stub); | |
8f0c309a CLT |
5730 | if (h->la25_stub) |
5731 | { | |
5732 | /* If a LA25 header for the stub itself exists, point to the | |
5733 | prepended LUI/ADDIU sequence. */ | |
5734 | sec = h->la25_stub->stub_section; | |
5735 | value = h->la25_stub->offset; | |
5736 | } | |
5737 | else | |
5738 | { | |
5739 | sec = h->fn_stub; | |
5740 | value = 0; | |
5741 | } | |
b49e97c9 TS |
5742 | } |
5743 | ||
8f0c309a | 5744 | symbol = sec->output_section->vma + sec->output_offset + value; |
f38c2df5 | 5745 | /* The target is 16-bit, but the stub isn't. */ |
0a1b45a2 | 5746 | target_is_16_bit_code_p = false; |
b49e97c9 | 5747 | } |
1bbce132 MR |
5748 | /* If this is a MIPS16 call with a stub, that is made through the PLT or |
5749 | to a standard MIPS function, we need to redirect the call to the stub. | |
5750 | Note that we specifically exclude R_MIPS16_CALL16 from this behavior; | |
5751 | indirect calls should use an indirect stub instead. */ | |
0e1862bb | 5752 | else if (r_type == R_MIPS16_26 && !bfd_link_relocatable (info) |
b314ec0e | 5753 | && ((h != NULL && (h->call_stub != NULL || h->call_fp_stub != NULL)) |
b9d58d71 | 5754 | || (local_p |
698600e4 AM |
5755 | && mips_elf_tdata (input_bfd)->local_call_stubs != NULL |
5756 | && mips_elf_tdata (input_bfd)->local_call_stubs[r_symndx] != NULL)) | |
1bbce132 | 5757 | && ((h != NULL && h->use_plt_entry) || !target_is_16_bit_code_p)) |
b49e97c9 | 5758 | { |
b9d58d71 | 5759 | if (local_p) |
698600e4 | 5760 | sec = mips_elf_tdata (input_bfd)->local_call_stubs[r_symndx]; |
b9d58d71 | 5761 | else |
b49e97c9 | 5762 | { |
b9d58d71 TS |
5763 | /* If both call_stub and call_fp_stub are defined, we can figure |
5764 | out which one to use by checking which one appears in the input | |
5765 | file. */ | |
5766 | if (h->call_stub != NULL && h->call_fp_stub != NULL) | |
b49e97c9 | 5767 | { |
b9d58d71 | 5768 | asection *o; |
68ffbac6 | 5769 | |
b9d58d71 TS |
5770 | sec = NULL; |
5771 | for (o = input_bfd->sections; o != NULL; o = o->next) | |
b49e97c9 | 5772 | { |
fd361982 | 5773 | if (CALL_FP_STUB_P (bfd_section_name (o))) |
b9d58d71 TS |
5774 | { |
5775 | sec = h->call_fp_stub; | |
5776 | break; | |
5777 | } | |
b49e97c9 | 5778 | } |
b9d58d71 TS |
5779 | if (sec == NULL) |
5780 | sec = h->call_stub; | |
b49e97c9 | 5781 | } |
b9d58d71 | 5782 | else if (h->call_stub != NULL) |
b49e97c9 | 5783 | sec = h->call_stub; |
b9d58d71 TS |
5784 | else |
5785 | sec = h->call_fp_stub; | |
07d6d2b8 | 5786 | } |
b49e97c9 | 5787 | |
eea6121a | 5788 | BFD_ASSERT (sec->size > 0); |
b49e97c9 TS |
5789 | symbol = sec->output_section->vma + sec->output_offset; |
5790 | } | |
861fb55a DJ |
5791 | /* If this is a direct call to a PIC function, redirect to the |
5792 | non-PIC stub. */ | |
5793 | else if (h != NULL && h->la25_stub | |
8f0c309a CLT |
5794 | && mips_elf_relocation_needs_la25_stub (input_bfd, r_type, |
5795 | target_is_16_bit_code_p)) | |
c7318def MR |
5796 | { |
5797 | symbol = (h->la25_stub->stub_section->output_section->vma | |
5798 | + h->la25_stub->stub_section->output_offset | |
5799 | + h->la25_stub->offset); | |
5800 | if (ELF_ST_IS_MICROMIPS (h->root.other)) | |
5801 | symbol |= 1; | |
5802 | } | |
1bbce132 MR |
5803 | /* For direct MIPS16 and microMIPS calls make sure the compressed PLT |
5804 | entry is used if a standard PLT entry has also been made. In this | |
5805 | case the symbol will have been set by mips_elf_set_plt_sym_value | |
5806 | to point to the standard PLT entry, so redirect to the compressed | |
5807 | one. */ | |
54806ffa MR |
5808 | else if ((mips16_branch_reloc_p (r_type) |
5809 | || micromips_branch_reloc_p (r_type)) | |
0e1862bb | 5810 | && !bfd_link_relocatable (info) |
1bbce132 MR |
5811 | && h != NULL |
5812 | && h->use_plt_entry | |
5813 | && h->root.plt.plist->comp_offset != MINUS_ONE | |
5814 | && h->root.plt.plist->mips_offset != MINUS_ONE) | |
5815 | { | |
0a1b45a2 | 5816 | bool micromips_p = MICROMIPS_P (abfd); |
1bbce132 | 5817 | |
ce558b89 | 5818 | sec = htab->root.splt; |
1bbce132 MR |
5819 | symbol = (sec->output_section->vma |
5820 | + sec->output_offset | |
5821 | + htab->plt_header_size | |
5822 | + htab->plt_mips_offset | |
5823 | + h->root.plt.plist->comp_offset | |
5824 | + 1); | |
5825 | ||
5826 | target_is_16_bit_code_p = !micromips_p; | |
5827 | target_is_micromips_code_p = micromips_p; | |
5828 | } | |
b49e97c9 | 5829 | |
df58fc94 | 5830 | /* Make sure MIPS16 and microMIPS are not used together. */ |
c9775dde | 5831 | if ((mips16_branch_reloc_p (r_type) && target_is_micromips_code_p) |
df58fc94 RS |
5832 | || (micromips_branch_reloc_p (r_type) && target_is_16_bit_code_p)) |
5833 | { | |
4eca0228 | 5834 | _bfd_error_handler |
df58fc94 RS |
5835 | (_("MIPS16 and microMIPS functions cannot call each other")); |
5836 | return bfd_reloc_notsupported; | |
5837 | } | |
5838 | ||
b49e97c9 | 5839 | /* Calls from 16-bit code to 32-bit code and vice versa require the |
df58fc94 RS |
5840 | mode change. However, we can ignore calls to undefined weak symbols, |
5841 | which should never be executed at runtime. This exception is important | |
5842 | because the assembly writer may have "known" that any definition of the | |
5843 | symbol would be 16-bit code, and that direct jumps were therefore | |
5844 | acceptable. */ | |
0e1862bb | 5845 | *cross_mode_jump_p = (!bfd_link_relocatable (info) |
df58fc94 | 5846 | && !(h && h->root.root.type == bfd_link_hash_undefweak) |
9d862524 MR |
5847 | && ((mips16_branch_reloc_p (r_type) |
5848 | && !target_is_16_bit_code_p) | |
5849 | || (micromips_branch_reloc_p (r_type) | |
df58fc94 | 5850 | && !target_is_micromips_code_p) |
9d862524 MR |
5851 | || ((branch_reloc_p (r_type) |
5852 | || r_type == R_MIPS_JALR) | |
df58fc94 RS |
5853 | && (target_is_16_bit_code_p |
5854 | || target_is_micromips_code_p)))); | |
b49e97c9 | 5855 | |
47275900 MR |
5856 | resolved_to_zero = (h != NULL |
5857 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->root)); | |
5858 | ||
5859 | switch (r_type) | |
5860 | { | |
5861 | case R_MIPS16_CALL16: | |
5862 | case R_MIPS16_GOT16: | |
5863 | case R_MIPS_CALL16: | |
5864 | case R_MIPS_GOT16: | |
5865 | case R_MIPS_GOT_PAGE: | |
5866 | case R_MIPS_GOT_DISP: | |
5867 | case R_MIPS_GOT_LO16: | |
5868 | case R_MIPS_CALL_LO16: | |
5869 | case R_MICROMIPS_CALL16: | |
5870 | case R_MICROMIPS_GOT16: | |
5871 | case R_MICROMIPS_GOT_PAGE: | |
5872 | case R_MICROMIPS_GOT_DISP: | |
5873 | case R_MICROMIPS_GOT_LO16: | |
5874 | case R_MICROMIPS_CALL_LO16: | |
5875 | if (resolved_to_zero | |
5876 | && !bfd_link_relocatable (info) | |
73425813 AM |
5877 | && bfd_reloc_offset_in_range (howto, input_bfd, input_section, |
5878 | relocation->r_offset) | |
47275900 | 5879 | && mips_elf_nullify_got_load (input_bfd, contents, |
0a1b45a2 | 5880 | relocation, howto, true)) |
47275900 MR |
5881 | return bfd_reloc_continue; |
5882 | ||
5883 | /* Fall through. */ | |
5884 | case R_MIPS_GOT_HI16: | |
5885 | case R_MIPS_CALL_HI16: | |
5886 | case R_MICROMIPS_GOT_HI16: | |
5887 | case R_MICROMIPS_CALL_HI16: | |
5888 | if (resolved_to_zero | |
5889 | && htab->use_absolute_zero | |
5890 | && bfd_link_pic (info)) | |
5891 | { | |
5892 | /* Redirect to the special `__gnu_absolute_zero' symbol. */ | |
5893 | h = mips_elf_link_hash_lookup (htab, "__gnu_absolute_zero", | |
0a1b45a2 | 5894 | false, false, false); |
47275900 MR |
5895 | BFD_ASSERT (h != NULL); |
5896 | } | |
5897 | break; | |
5898 | } | |
5899 | ||
c5d6fa44 | 5900 | local_p = (h == NULL || mips_use_local_got_p (info, h)); |
b49e97c9 | 5901 | |
0a61c8c2 RS |
5902 | gp0 = _bfd_get_gp_value (input_bfd); |
5903 | gp = _bfd_get_gp_value (abfd); | |
23cc69b6 | 5904 | if (htab->got_info) |
a8028dd0 | 5905 | gp += mips_elf_adjust_gp (abfd, htab->got_info, input_bfd); |
0a61c8c2 RS |
5906 | |
5907 | if (gnu_local_gp_p) | |
5908 | symbol = gp; | |
5909 | ||
df58fc94 RS |
5910 | /* Global R_MIPS_GOT_PAGE/R_MICROMIPS_GOT_PAGE relocations are equivalent |
5911 | to R_MIPS_GOT_DISP/R_MICROMIPS_GOT_DISP. The addend is applied by the | |
5912 | corresponding R_MIPS_GOT_OFST/R_MICROMIPS_GOT_OFST. */ | |
5913 | if (got_page_reloc_p (r_type) && !local_p) | |
020d7251 | 5914 | { |
df58fc94 RS |
5915 | r_type = (micromips_reloc_p (r_type) |
5916 | ? R_MICROMIPS_GOT_DISP : R_MIPS_GOT_DISP); | |
020d7251 RS |
5917 | addend = 0; |
5918 | } | |
5919 | ||
e77760d2 | 5920 | /* If we haven't already determined the GOT offset, and we're going |
0a61c8c2 | 5921 | to need it, get it now. */ |
b49e97c9 TS |
5922 | switch (r_type) |
5923 | { | |
738e5348 RS |
5924 | case R_MIPS16_CALL16: |
5925 | case R_MIPS16_GOT16: | |
b49e97c9 TS |
5926 | case R_MIPS_CALL16: |
5927 | case R_MIPS_GOT16: | |
5928 | case R_MIPS_GOT_DISP: | |
5929 | case R_MIPS_GOT_HI16: | |
5930 | case R_MIPS_CALL_HI16: | |
5931 | case R_MIPS_GOT_LO16: | |
5932 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
5933 | case R_MICROMIPS_CALL16: |
5934 | case R_MICROMIPS_GOT16: | |
5935 | case R_MICROMIPS_GOT_DISP: | |
5936 | case R_MICROMIPS_GOT_HI16: | |
5937 | case R_MICROMIPS_CALL_HI16: | |
5938 | case R_MICROMIPS_GOT_LO16: | |
5939 | case R_MICROMIPS_CALL_LO16: | |
0f20cc35 DJ |
5940 | case R_MIPS_TLS_GD: |
5941 | case R_MIPS_TLS_GOTTPREL: | |
5942 | case R_MIPS_TLS_LDM: | |
d0f13682 CLT |
5943 | case R_MIPS16_TLS_GD: |
5944 | case R_MIPS16_TLS_GOTTPREL: | |
5945 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
5946 | case R_MICROMIPS_TLS_GD: |
5947 | case R_MICROMIPS_TLS_GOTTPREL: | |
5948 | case R_MICROMIPS_TLS_LDM: | |
b49e97c9 | 5949 | /* Find the index into the GOT where this value is located. */ |
df58fc94 | 5950 | if (tls_ldm_reloc_p (r_type)) |
0f20cc35 | 5951 | { |
0a44bf69 | 5952 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
5c18022e | 5953 | 0, 0, NULL, r_type); |
0f20cc35 DJ |
5954 | if (g == MINUS_ONE) |
5955 | return bfd_reloc_outofrange; | |
5956 | } | |
5957 | else if (!local_p) | |
b49e97c9 | 5958 | { |
0a44bf69 RS |
5959 | /* On VxWorks, CALL relocations should refer to the .got.plt |
5960 | entry, which is initialized to point at the PLT stub. */ | |
90c14f0c | 5961 | if (htab->root.target_os == is_vxworks |
df58fc94 RS |
5962 | && (call_hi16_reloc_p (r_type) |
5963 | || call_lo16_reloc_p (r_type) | |
738e5348 | 5964 | || call16_reloc_p (r_type))) |
0a44bf69 RS |
5965 | { |
5966 | BFD_ASSERT (addend == 0); | |
5967 | BFD_ASSERT (h->root.needs_plt); | |
5968 | g = mips_elf_gotplt_index (info, &h->root); | |
5969 | } | |
5970 | else | |
b49e97c9 | 5971 | { |
020d7251 | 5972 | BFD_ASSERT (addend == 0); |
13fbec83 RS |
5973 | g = mips_elf_global_got_index (abfd, info, input_bfd, |
5974 | &h->root, r_type); | |
e641e783 | 5975 | if (!TLS_RELOC_P (r_type) |
020d7251 RS |
5976 | && !elf_hash_table (info)->dynamic_sections_created) |
5977 | /* This is a static link. We must initialize the GOT entry. */ | |
ce558b89 | 5978 | MIPS_ELF_PUT_WORD (dynobj, symbol, htab->root.sgot->contents + g); |
b49e97c9 TS |
5979 | } |
5980 | } | |
90c14f0c | 5981 | else if (htab->root.target_os != is_vxworks |
738e5348 | 5982 | && (call16_reloc_p (r_type) || got16_reloc_p (r_type))) |
0a44bf69 | 5983 | /* The calculation below does not involve "g". */ |
b49e97c9 TS |
5984 | break; |
5985 | else | |
5986 | { | |
5c18022e | 5987 | g = mips_elf_local_got_index (abfd, input_bfd, info, |
0a44bf69 | 5988 | symbol + addend, r_symndx, h, r_type); |
b49e97c9 TS |
5989 | if (g == MINUS_ONE) |
5990 | return bfd_reloc_outofrange; | |
5991 | } | |
5992 | ||
5993 | /* Convert GOT indices to actual offsets. */ | |
a8028dd0 | 5994 | g = mips_elf_got_offset_from_index (info, abfd, input_bfd, g); |
b49e97c9 | 5995 | break; |
b49e97c9 TS |
5996 | } |
5997 | ||
0a44bf69 RS |
5998 | /* Relocations against the VxWorks __GOTT_BASE__ and __GOTT_INDEX__ |
5999 | symbols are resolved by the loader. Add them to .rela.dyn. */ | |
6000 | if (h != NULL && is_gott_symbol (info, &h->root)) | |
6001 | { | |
6002 | Elf_Internal_Rela outrel; | |
6003 | bfd_byte *loc; | |
6004 | asection *s; | |
6005 | ||
0a1b45a2 | 6006 | s = mips_elf_rel_dyn_section (info, false); |
0a44bf69 RS |
6007 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
6008 | ||
6009 | outrel.r_offset = (input_section->output_section->vma | |
6010 | + input_section->output_offset | |
6011 | + relocation->r_offset); | |
6012 | outrel.r_info = ELF32_R_INFO (h->root.dynindx, r_type); | |
6013 | outrel.r_addend = addend; | |
6014 | bfd_elf32_swap_reloca_out (abfd, &outrel, loc); | |
9e3313ae RS |
6015 | |
6016 | /* If we've written this relocation for a readonly section, | |
6017 | we need to set DF_TEXTREL again, so that we do not delete the | |
6018 | DT_TEXTREL tag. */ | |
6019 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
6020 | info->flags |= DF_TEXTREL; | |
6021 | ||
0a44bf69 RS |
6022 | *valuep = 0; |
6023 | return bfd_reloc_ok; | |
6024 | } | |
6025 | ||
b49e97c9 TS |
6026 | /* Figure out what kind of relocation is being performed. */ |
6027 | switch (r_type) | |
6028 | { | |
6029 | case R_MIPS_NONE: | |
6030 | return bfd_reloc_continue; | |
6031 | ||
6032 | case R_MIPS_16: | |
c3eb94b4 MF |
6033 | if (howto->partial_inplace) |
6034 | addend = _bfd_mips_elf_sign_extend (addend, 16); | |
6035 | value = symbol + addend; | |
b49e97c9 TS |
6036 | overflowed_p = mips_elf_overflow_p (value, 16); |
6037 | break; | |
6038 | ||
6039 | case R_MIPS_32: | |
6040 | case R_MIPS_REL32: | |
6041 | case R_MIPS_64: | |
0e1862bb | 6042 | if ((bfd_link_pic (info) |
861fb55a | 6043 | || (htab->root.dynamic_sections_created |
b49e97c9 | 6044 | && h != NULL |
f5385ebf | 6045 | && h->root.def_dynamic |
861fb55a DJ |
6046 | && !h->root.def_regular |
6047 | && !h->has_static_relocs)) | |
cf35638d | 6048 | && r_symndx != STN_UNDEF |
9a59ad6b DJ |
6049 | && (h == NULL |
6050 | || h->root.root.type != bfd_link_hash_undefweak | |
ad951203 L |
6051 | || (ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT |
6052 | && !resolved_to_zero)) | |
b49e97c9 TS |
6053 | && (input_section->flags & SEC_ALLOC) != 0) |
6054 | { | |
861fb55a | 6055 | /* If we're creating a shared library, then we can't know |
b49e97c9 TS |
6056 | where the symbol will end up. So, we create a relocation |
6057 | record in the output, and leave the job up to the dynamic | |
861fb55a DJ |
6058 | linker. We must do the same for executable references to |
6059 | shared library symbols, unless we've decided to use copy | |
6060 | relocs or PLTs instead. */ | |
b49e97c9 TS |
6061 | value = addend; |
6062 | if (!mips_elf_create_dynamic_relocation (abfd, | |
6063 | info, | |
6064 | relocation, | |
6065 | h, | |
6066 | sec, | |
6067 | symbol, | |
6068 | &value, | |
6069 | input_section)) | |
6070 | return bfd_reloc_undefined; | |
6071 | } | |
6072 | else | |
6073 | { | |
6074 | if (r_type != R_MIPS_REL32) | |
6075 | value = symbol + addend; | |
6076 | else | |
6077 | value = addend; | |
6078 | } | |
6079 | value &= howto->dst_mask; | |
092dcd75 CD |
6080 | break; |
6081 | ||
6082 | case R_MIPS_PC32: | |
6083 | value = symbol + addend - p; | |
6084 | value &= howto->dst_mask; | |
b49e97c9 TS |
6085 | break; |
6086 | ||
b49e97c9 TS |
6087 | case R_MIPS16_26: |
6088 | /* The calculation for R_MIPS16_26 is just the same as for an | |
6089 | R_MIPS_26. It's only the storage of the relocated field into | |
6090 | the output file that's different. That's handled in | |
6091 | mips_elf_perform_relocation. So, we just fall through to the | |
6092 | R_MIPS_26 case here. */ | |
6093 | case R_MIPS_26: | |
df58fc94 RS |
6094 | case R_MICROMIPS_26_S1: |
6095 | { | |
6096 | unsigned int shift; | |
6097 | ||
df58fc94 RS |
6098 | /* Shift is 2, unusually, for microMIPS JALX. */ |
6099 | shift = (!*cross_mode_jump_p && r_type == R_MICROMIPS_26_S1) ? 1 : 2; | |
6100 | ||
77434823 | 6101 | if (howto->partial_inplace && !section_p) |
df58fc94 | 6102 | value = _bfd_mips_elf_sign_extend (addend, 26 + shift); |
c3eb94b4 MF |
6103 | else |
6104 | value = addend; | |
bc27bb05 MR |
6105 | value += symbol; |
6106 | ||
9d862524 MR |
6107 | /* Make sure the target of a jump is suitably aligned. Bit 0 must |
6108 | be the correct ISA mode selector except for weak undefined | |
6109 | symbols. */ | |
6110 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6111 | && (*cross_mode_jump_p | |
6112 | ? (value & 3) != (r_type == R_MIPS_26) | |
07d6d2b8 | 6113 | : (value & ((1 << shift) - 1)) != (r_type != R_MIPS_26))) |
bc27bb05 MR |
6114 | return bfd_reloc_outofrange; |
6115 | ||
6116 | value >>= shift; | |
77434823 | 6117 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
df58fc94 RS |
6118 | overflowed_p = (value >> 26) != ((p + 4) >> (26 + shift)); |
6119 | value &= howto->dst_mask; | |
6120 | } | |
b49e97c9 TS |
6121 | break; |
6122 | ||
0f20cc35 | 6123 | case R_MIPS_TLS_DTPREL_HI16: |
d0f13682 | 6124 | case R_MIPS16_TLS_DTPREL_HI16: |
df58fc94 | 6125 | case R_MICROMIPS_TLS_DTPREL_HI16: |
0f20cc35 DJ |
6126 | value = (mips_elf_high (addend + symbol - dtprel_base (info)) |
6127 | & howto->dst_mask); | |
6128 | break; | |
6129 | ||
6130 | case R_MIPS_TLS_DTPREL_LO16: | |
741d6ea8 JM |
6131 | case R_MIPS_TLS_DTPREL32: |
6132 | case R_MIPS_TLS_DTPREL64: | |
d0f13682 | 6133 | case R_MIPS16_TLS_DTPREL_LO16: |
df58fc94 | 6134 | case R_MICROMIPS_TLS_DTPREL_LO16: |
0f20cc35 DJ |
6135 | value = (symbol + addend - dtprel_base (info)) & howto->dst_mask; |
6136 | break; | |
6137 | ||
6138 | case R_MIPS_TLS_TPREL_HI16: | |
d0f13682 | 6139 | case R_MIPS16_TLS_TPREL_HI16: |
df58fc94 | 6140 | case R_MICROMIPS_TLS_TPREL_HI16: |
0f20cc35 DJ |
6141 | value = (mips_elf_high (addend + symbol - tprel_base (info)) |
6142 | & howto->dst_mask); | |
6143 | break; | |
6144 | ||
6145 | case R_MIPS_TLS_TPREL_LO16: | |
d0f13682 CLT |
6146 | case R_MIPS_TLS_TPREL32: |
6147 | case R_MIPS_TLS_TPREL64: | |
6148 | case R_MIPS16_TLS_TPREL_LO16: | |
df58fc94 | 6149 | case R_MICROMIPS_TLS_TPREL_LO16: |
0f20cc35 DJ |
6150 | value = (symbol + addend - tprel_base (info)) & howto->dst_mask; |
6151 | break; | |
6152 | ||
b49e97c9 | 6153 | case R_MIPS_HI16: |
d6f16593 | 6154 | case R_MIPS16_HI16: |
df58fc94 | 6155 | case R_MICROMIPS_HI16: |
b49e97c9 TS |
6156 | if (!gp_disp_p) |
6157 | { | |
6158 | value = mips_elf_high (addend + symbol); | |
6159 | value &= howto->dst_mask; | |
6160 | } | |
6161 | else | |
6162 | { | |
d6f16593 | 6163 | /* For MIPS16 ABI code we generate this sequence |
07d6d2b8 AM |
6164 | 0: li $v0,%hi(_gp_disp) |
6165 | 4: addiupc $v1,%lo(_gp_disp) | |
6166 | 8: sll $v0,16 | |
d6f16593 MR |
6167 | 12: addu $v0,$v1 |
6168 | 14: move $gp,$v0 | |
6169 | So the offsets of hi and lo relocs are the same, but the | |
888b9c01 CLT |
6170 | base $pc is that used by the ADDIUPC instruction at $t9 + 4. |
6171 | ADDIUPC clears the low two bits of the instruction address, | |
6172 | so the base is ($t9 + 4) & ~3. */ | |
d6f16593 | 6173 | if (r_type == R_MIPS16_HI16) |
888b9c01 | 6174 | value = mips_elf_high (addend + gp - ((p + 4) & ~(bfd_vma) 0x3)); |
df58fc94 RS |
6175 | /* The microMIPS .cpload sequence uses the same assembly |
6176 | instructions as the traditional psABI version, but the | |
6177 | incoming $t9 has the low bit set. */ | |
6178 | else if (r_type == R_MICROMIPS_HI16) | |
6179 | value = mips_elf_high (addend + gp - p - 1); | |
d6f16593 MR |
6180 | else |
6181 | value = mips_elf_high (addend + gp - p); | |
b49e97c9 TS |
6182 | } |
6183 | break; | |
6184 | ||
6185 | case R_MIPS_LO16: | |
d6f16593 | 6186 | case R_MIPS16_LO16: |
df58fc94 RS |
6187 | case R_MICROMIPS_LO16: |
6188 | case R_MICROMIPS_HI0_LO16: | |
b49e97c9 TS |
6189 | if (!gp_disp_p) |
6190 | value = (symbol + addend) & howto->dst_mask; | |
6191 | else | |
6192 | { | |
d6f16593 MR |
6193 | /* See the comment for R_MIPS16_HI16 above for the reason |
6194 | for this conditional. */ | |
6195 | if (r_type == R_MIPS16_LO16) | |
888b9c01 | 6196 | value = addend + gp - (p & ~(bfd_vma) 0x3); |
df58fc94 RS |
6197 | else if (r_type == R_MICROMIPS_LO16 |
6198 | || r_type == R_MICROMIPS_HI0_LO16) | |
6199 | value = addend + gp - p + 3; | |
d6f16593 MR |
6200 | else |
6201 | value = addend + gp - p + 4; | |
b49e97c9 | 6202 | /* The MIPS ABI requires checking the R_MIPS_LO16 relocation |
8dc1a139 | 6203 | for overflow. But, on, say, IRIX5, relocations against |
b49e97c9 TS |
6204 | _gp_disp are normally generated from the .cpload |
6205 | pseudo-op. It generates code that normally looks like | |
6206 | this: | |
6207 | ||
6208 | lui $gp,%hi(_gp_disp) | |
6209 | addiu $gp,$gp,%lo(_gp_disp) | |
6210 | addu $gp,$gp,$t9 | |
6211 | ||
6212 | Here $t9 holds the address of the function being called, | |
6213 | as required by the MIPS ELF ABI. The R_MIPS_LO16 | |
6214 | relocation can easily overflow in this situation, but the | |
6215 | R_MIPS_HI16 relocation will handle the overflow. | |
6216 | Therefore, we consider this a bug in the MIPS ABI, and do | |
6217 | not check for overflow here. */ | |
6218 | } | |
6219 | break; | |
6220 | ||
6221 | case R_MIPS_LITERAL: | |
df58fc94 | 6222 | case R_MICROMIPS_LITERAL: |
b49e97c9 TS |
6223 | /* Because we don't merge literal sections, we can handle this |
6224 | just like R_MIPS_GPREL16. In the long run, we should merge | |
6225 | shared literals, and then we will need to additional work | |
6226 | here. */ | |
6227 | ||
6228 | /* Fall through. */ | |
6229 | ||
6230 | case R_MIPS16_GPREL: | |
6231 | /* The R_MIPS16_GPREL performs the same calculation as | |
6232 | R_MIPS_GPREL16, but stores the relocated bits in a different | |
6233 | order. We don't need to do anything special here; the | |
6234 | differences are handled in mips_elf_perform_relocation. */ | |
6235 | case R_MIPS_GPREL16: | |
df58fc94 RS |
6236 | case R_MICROMIPS_GPREL7_S2: |
6237 | case R_MICROMIPS_GPREL16: | |
bce03d3d AO |
6238 | /* Only sign-extend the addend if it was extracted from the |
6239 | instruction. If the addend was separate, leave it alone, | |
6240 | otherwise we may lose significant bits. */ | |
6241 | if (howto->partial_inplace) | |
a7ebbfdf | 6242 | addend = _bfd_mips_elf_sign_extend (addend, 16); |
bce03d3d AO |
6243 | value = symbol + addend - gp; |
6244 | /* If the symbol was local, any earlier relocatable links will | |
6245 | have adjusted its addend with the gp offset, so compensate | |
6246 | for that now. Don't do it for symbols forced local in this | |
6247 | link, though, since they won't have had the gp offset applied | |
6248 | to them before. */ | |
6249 | if (was_local_p) | |
6250 | value += gp0; | |
538baf8b AB |
6251 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6252 | overflowed_p = mips_elf_overflow_p (value, 16); | |
b49e97c9 TS |
6253 | break; |
6254 | ||
738e5348 RS |
6255 | case R_MIPS16_GOT16: |
6256 | case R_MIPS16_CALL16: | |
b49e97c9 TS |
6257 | case R_MIPS_GOT16: |
6258 | case R_MIPS_CALL16: | |
df58fc94 RS |
6259 | case R_MICROMIPS_GOT16: |
6260 | case R_MICROMIPS_CALL16: | |
0a44bf69 | 6261 | /* VxWorks does not have separate local and global semantics for |
738e5348 | 6262 | R_MIPS*_GOT16; every relocation evaluates to "G". */ |
90c14f0c | 6263 | if (htab->root.target_os != is_vxworks && local_p) |
b49e97c9 | 6264 | { |
5c18022e | 6265 | value = mips_elf_got16_entry (abfd, input_bfd, info, |
020d7251 | 6266 | symbol + addend, !was_local_p); |
b49e97c9 TS |
6267 | if (value == MINUS_ONE) |
6268 | return bfd_reloc_outofrange; | |
6269 | value | |
a8028dd0 | 6270 | = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
6271 | overflowed_p = mips_elf_overflow_p (value, 16); |
6272 | break; | |
6273 | } | |
6274 | ||
6275 | /* Fall through. */ | |
6276 | ||
0f20cc35 DJ |
6277 | case R_MIPS_TLS_GD: |
6278 | case R_MIPS_TLS_GOTTPREL: | |
6279 | case R_MIPS_TLS_LDM: | |
b49e97c9 | 6280 | case R_MIPS_GOT_DISP: |
d0f13682 CLT |
6281 | case R_MIPS16_TLS_GD: |
6282 | case R_MIPS16_TLS_GOTTPREL: | |
6283 | case R_MIPS16_TLS_LDM: | |
df58fc94 RS |
6284 | case R_MICROMIPS_TLS_GD: |
6285 | case R_MICROMIPS_TLS_GOTTPREL: | |
6286 | case R_MICROMIPS_TLS_LDM: | |
6287 | case R_MICROMIPS_GOT_DISP: | |
b49e97c9 TS |
6288 | value = g; |
6289 | overflowed_p = mips_elf_overflow_p (value, 16); | |
6290 | break; | |
6291 | ||
6292 | case R_MIPS_GPREL32: | |
bce03d3d AO |
6293 | value = (addend + symbol + gp0 - gp); |
6294 | if (!save_addend) | |
6295 | value &= howto->dst_mask; | |
b49e97c9 TS |
6296 | break; |
6297 | ||
6298 | case R_MIPS_PC16: | |
bad36eac | 6299 | case R_MIPS_GNU_REL16_S2: |
c3eb94b4 MF |
6300 | if (howto->partial_inplace) |
6301 | addend = _bfd_mips_elf_sign_extend (addend, 18); | |
6302 | ||
9d862524 | 6303 | /* No need to exclude weak undefined symbols here as they resolve |
07d6d2b8 AM |
6304 | to 0 and never set `*cross_mode_jump_p', so this alignment check |
6305 | will never trigger for them. */ | |
9d862524 MR |
6306 | if (*cross_mode_jump_p |
6307 | ? ((symbol + addend) & 3) != 1 | |
6308 | : ((symbol + addend) & 3) != 0) | |
c3eb94b4 MF |
6309 | return bfd_reloc_outofrange; |
6310 | ||
6311 | value = symbol + addend - p; | |
538baf8b AB |
6312 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6313 | overflowed_p = mips_elf_overflow_p (value, 18); | |
37caec6b TS |
6314 | value >>= howto->rightshift; |
6315 | value &= howto->dst_mask; | |
b49e97c9 TS |
6316 | break; |
6317 | ||
c9775dde MR |
6318 | case R_MIPS16_PC16_S1: |
6319 | if (howto->partial_inplace) | |
6320 | addend = _bfd_mips_elf_sign_extend (addend, 17); | |
6321 | ||
6322 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
9d862524 MR |
6323 | && (*cross_mode_jump_p |
6324 | ? ((symbol + addend) & 3) != 0 | |
6325 | : ((symbol + addend) & 1) == 0)) | |
c9775dde MR |
6326 | return bfd_reloc_outofrange; |
6327 | ||
6328 | value = symbol + addend - p; | |
6329 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6330 | overflowed_p = mips_elf_overflow_p (value, 17); | |
6331 | value >>= howto->rightshift; | |
6332 | value &= howto->dst_mask; | |
6333 | break; | |
6334 | ||
7361da2c AB |
6335 | case R_MIPS_PC21_S2: |
6336 | if (howto->partial_inplace) | |
6337 | addend = _bfd_mips_elf_sign_extend (addend, 23); | |
6338 | ||
6339 | if ((symbol + addend) & 3) | |
6340 | return bfd_reloc_outofrange; | |
6341 | ||
6342 | value = symbol + addend - p; | |
538baf8b AB |
6343 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6344 | overflowed_p = mips_elf_overflow_p (value, 23); | |
7361da2c AB |
6345 | value >>= howto->rightshift; |
6346 | value &= howto->dst_mask; | |
6347 | break; | |
6348 | ||
6349 | case R_MIPS_PC26_S2: | |
6350 | if (howto->partial_inplace) | |
6351 | addend = _bfd_mips_elf_sign_extend (addend, 28); | |
6352 | ||
6353 | if ((symbol + addend) & 3) | |
6354 | return bfd_reloc_outofrange; | |
6355 | ||
6356 | value = symbol + addend - p; | |
538baf8b AB |
6357 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6358 | overflowed_p = mips_elf_overflow_p (value, 28); | |
7361da2c AB |
6359 | value >>= howto->rightshift; |
6360 | value &= howto->dst_mask; | |
6361 | break; | |
6362 | ||
6363 | case R_MIPS_PC18_S3: | |
6364 | if (howto->partial_inplace) | |
6365 | addend = _bfd_mips_elf_sign_extend (addend, 21); | |
6366 | ||
6367 | if ((symbol + addend) & 7) | |
6368 | return bfd_reloc_outofrange; | |
6369 | ||
6370 | value = symbol + addend - ((p | 7) ^ 7); | |
538baf8b AB |
6371 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6372 | overflowed_p = mips_elf_overflow_p (value, 21); | |
7361da2c AB |
6373 | value >>= howto->rightshift; |
6374 | value &= howto->dst_mask; | |
6375 | break; | |
6376 | ||
6377 | case R_MIPS_PC19_S2: | |
6378 | if (howto->partial_inplace) | |
6379 | addend = _bfd_mips_elf_sign_extend (addend, 21); | |
6380 | ||
6381 | if ((symbol + addend) & 3) | |
6382 | return bfd_reloc_outofrange; | |
6383 | ||
6384 | value = symbol + addend - p; | |
538baf8b AB |
6385 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6386 | overflowed_p = mips_elf_overflow_p (value, 21); | |
7361da2c AB |
6387 | value >>= howto->rightshift; |
6388 | value &= howto->dst_mask; | |
6389 | break; | |
6390 | ||
6391 | case R_MIPS_PCHI16: | |
6392 | value = mips_elf_high (symbol + addend - p); | |
7361da2c AB |
6393 | value &= howto->dst_mask; |
6394 | break; | |
6395 | ||
6396 | case R_MIPS_PCLO16: | |
6397 | if (howto->partial_inplace) | |
6398 | addend = _bfd_mips_elf_sign_extend (addend, 16); | |
6399 | value = symbol + addend - p; | |
6400 | value &= howto->dst_mask; | |
6401 | break; | |
6402 | ||
df58fc94 | 6403 | case R_MICROMIPS_PC7_S1: |
c3eb94b4 MF |
6404 | if (howto->partial_inplace) |
6405 | addend = _bfd_mips_elf_sign_extend (addend, 8); | |
9d862524 MR |
6406 | |
6407 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6408 | && (*cross_mode_jump_p | |
6409 | ? ((symbol + addend + 2) & 3) != 0 | |
6410 | : ((symbol + addend + 2) & 1) == 0)) | |
6411 | return bfd_reloc_outofrange; | |
6412 | ||
c3eb94b4 | 6413 | value = symbol + addend - p; |
538baf8b AB |
6414 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6415 | overflowed_p = mips_elf_overflow_p (value, 8); | |
df58fc94 RS |
6416 | value >>= howto->rightshift; |
6417 | value &= howto->dst_mask; | |
6418 | break; | |
6419 | ||
6420 | case R_MICROMIPS_PC10_S1: | |
c3eb94b4 MF |
6421 | if (howto->partial_inplace) |
6422 | addend = _bfd_mips_elf_sign_extend (addend, 11); | |
9d862524 MR |
6423 | |
6424 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6425 | && (*cross_mode_jump_p | |
6426 | ? ((symbol + addend + 2) & 3) != 0 | |
6427 | : ((symbol + addend + 2) & 1) == 0)) | |
6428 | return bfd_reloc_outofrange; | |
6429 | ||
c3eb94b4 | 6430 | value = symbol + addend - p; |
538baf8b AB |
6431 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6432 | overflowed_p = mips_elf_overflow_p (value, 11); | |
df58fc94 RS |
6433 | value >>= howto->rightshift; |
6434 | value &= howto->dst_mask; | |
6435 | break; | |
6436 | ||
6437 | case R_MICROMIPS_PC16_S1: | |
c3eb94b4 MF |
6438 | if (howto->partial_inplace) |
6439 | addend = _bfd_mips_elf_sign_extend (addend, 17); | |
9d862524 MR |
6440 | |
6441 | if ((was_local_p || h->root.root.type != bfd_link_hash_undefweak) | |
6442 | && (*cross_mode_jump_p | |
6443 | ? ((symbol + addend) & 3) != 0 | |
6444 | : ((symbol + addend) & 1) == 0)) | |
6445 | return bfd_reloc_outofrange; | |
6446 | ||
c3eb94b4 | 6447 | value = symbol + addend - p; |
538baf8b AB |
6448 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6449 | overflowed_p = mips_elf_overflow_p (value, 17); | |
df58fc94 RS |
6450 | value >>= howto->rightshift; |
6451 | value &= howto->dst_mask; | |
6452 | break; | |
6453 | ||
6454 | case R_MICROMIPS_PC23_S2: | |
c3eb94b4 MF |
6455 | if (howto->partial_inplace) |
6456 | addend = _bfd_mips_elf_sign_extend (addend, 25); | |
6457 | value = symbol + addend - ((p | 3) ^ 3); | |
538baf8b AB |
6458 | if (was_local_p || h->root.root.type != bfd_link_hash_undefweak) |
6459 | overflowed_p = mips_elf_overflow_p (value, 25); | |
df58fc94 RS |
6460 | value >>= howto->rightshift; |
6461 | value &= howto->dst_mask; | |
6462 | break; | |
6463 | ||
b49e97c9 TS |
6464 | case R_MIPS_GOT_HI16: |
6465 | case R_MIPS_CALL_HI16: | |
df58fc94 RS |
6466 | case R_MICROMIPS_GOT_HI16: |
6467 | case R_MICROMIPS_CALL_HI16: | |
b49e97c9 TS |
6468 | /* We're allowed to handle these two relocations identically. |
6469 | The dynamic linker is allowed to handle the CALL relocations | |
6470 | differently by creating a lazy evaluation stub. */ | |
6471 | value = g; | |
6472 | value = mips_elf_high (value); | |
6473 | value &= howto->dst_mask; | |
6474 | break; | |
6475 | ||
6476 | case R_MIPS_GOT_LO16: | |
6477 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
6478 | case R_MICROMIPS_GOT_LO16: |
6479 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
6480 | value = g & howto->dst_mask; |
6481 | break; | |
6482 | ||
6483 | case R_MIPS_GOT_PAGE: | |
df58fc94 | 6484 | case R_MICROMIPS_GOT_PAGE: |
5c18022e | 6485 | value = mips_elf_got_page (abfd, input_bfd, info, symbol + addend, NULL); |
b49e97c9 TS |
6486 | if (value == MINUS_ONE) |
6487 | return bfd_reloc_outofrange; | |
a8028dd0 | 6488 | value = mips_elf_got_offset_from_index (info, abfd, input_bfd, value); |
b49e97c9 TS |
6489 | overflowed_p = mips_elf_overflow_p (value, 16); |
6490 | break; | |
6491 | ||
6492 | case R_MIPS_GOT_OFST: | |
df58fc94 | 6493 | case R_MICROMIPS_GOT_OFST: |
93a2b7ae | 6494 | if (local_p) |
5c18022e | 6495 | mips_elf_got_page (abfd, input_bfd, info, symbol + addend, &value); |
0fdc1bf1 AO |
6496 | else |
6497 | value = addend; | |
b49e97c9 TS |
6498 | overflowed_p = mips_elf_overflow_p (value, 16); |
6499 | break; | |
6500 | ||
6501 | case R_MIPS_SUB: | |
df58fc94 | 6502 | case R_MICROMIPS_SUB: |
b49e97c9 TS |
6503 | value = symbol - addend; |
6504 | value &= howto->dst_mask; | |
6505 | break; | |
6506 | ||
6507 | case R_MIPS_HIGHER: | |
df58fc94 | 6508 | case R_MICROMIPS_HIGHER: |
b49e97c9 TS |
6509 | value = mips_elf_higher (addend + symbol); |
6510 | value &= howto->dst_mask; | |
6511 | break; | |
6512 | ||
6513 | case R_MIPS_HIGHEST: | |
df58fc94 | 6514 | case R_MICROMIPS_HIGHEST: |
b49e97c9 TS |
6515 | value = mips_elf_highest (addend + symbol); |
6516 | value &= howto->dst_mask; | |
6517 | break; | |
6518 | ||
6519 | case R_MIPS_SCN_DISP: | |
df58fc94 | 6520 | case R_MICROMIPS_SCN_DISP: |
b49e97c9 TS |
6521 | value = symbol + addend - sec->output_offset; |
6522 | value &= howto->dst_mask; | |
6523 | break; | |
6524 | ||
b49e97c9 | 6525 | case R_MIPS_JALR: |
df58fc94 | 6526 | case R_MICROMIPS_JALR: |
1367d393 ILT |
6527 | /* This relocation is only a hint. In some cases, we optimize |
6528 | it into a bal instruction. But we don't try to optimize | |
5bbc5ae7 AN |
6529 | when the symbol does not resolve locally. */ |
6530 | if (h != NULL && !SYMBOL_CALLS_LOCAL (info, &h->root)) | |
1367d393 | 6531 | return bfd_reloc_continue; |
c1556ecd MR |
6532 | /* We can't optimize cross-mode jumps either. */ |
6533 | if (*cross_mode_jump_p) | |
6534 | return bfd_reloc_continue; | |
1367d393 | 6535 | value = symbol + addend; |
c1556ecd MR |
6536 | /* Neither we can non-instruction-aligned targets. */ |
6537 | if (r_type == R_MIPS_JALR ? (value & 3) != 0 : (value & 1) == 0) | |
6538 | return bfd_reloc_continue; | |
1367d393 | 6539 | break; |
b49e97c9 | 6540 | |
1367d393 | 6541 | case R_MIPS_PJUMP: |
b49e97c9 TS |
6542 | case R_MIPS_GNU_VTINHERIT: |
6543 | case R_MIPS_GNU_VTENTRY: | |
6544 | /* We don't do anything with these at present. */ | |
6545 | return bfd_reloc_continue; | |
6546 | ||
6547 | default: | |
6548 | /* An unrecognized relocation type. */ | |
6549 | return bfd_reloc_notsupported; | |
6550 | } | |
6551 | ||
6552 | /* Store the VALUE for our caller. */ | |
6553 | *valuep = value; | |
6554 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; | |
6555 | } | |
6556 | ||
b49e97c9 TS |
6557 | /* It has been determined that the result of the RELOCATION is the |
6558 | VALUE. Use HOWTO to place VALUE into the output file at the | |
6559 | appropriate position. The SECTION is the section to which the | |
68ffbac6 | 6560 | relocation applies. |
38a7df63 | 6561 | CROSS_MODE_JUMP_P is true if the relocation field |
df58fc94 | 6562 | is a MIPS16 or microMIPS jump to standard MIPS code, or vice versa. |
b49e97c9 | 6563 | |
b34976b6 | 6564 | Returns FALSE if anything goes wrong. */ |
b49e97c9 | 6565 | |
0a1b45a2 | 6566 | static bool |
9719ad41 RS |
6567 | mips_elf_perform_relocation (struct bfd_link_info *info, |
6568 | reloc_howto_type *howto, | |
6569 | const Elf_Internal_Rela *relocation, | |
6570 | bfd_vma value, bfd *input_bfd, | |
6571 | asection *input_section, bfd_byte *contents, | |
0a1b45a2 | 6572 | bool cross_mode_jump_p) |
b49e97c9 TS |
6573 | { |
6574 | bfd_vma x; | |
6575 | bfd_byte *location; | |
6576 | int r_type = ELF_R_TYPE (input_bfd, relocation->r_info); | |
6577 | ||
6578 | /* Figure out where the relocation is occurring. */ | |
6579 | location = contents + relocation->r_offset; | |
6580 | ||
0a1b45a2 | 6581 | _bfd_mips_elf_reloc_unshuffle (input_bfd, r_type, false, location); |
d6f16593 | 6582 | |
b49e97c9 TS |
6583 | /* Obtain the current value. */ |
6584 | x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents); | |
6585 | ||
6586 | /* Clear the field we are setting. */ | |
6587 | x &= ~howto->dst_mask; | |
6588 | ||
b49e97c9 TS |
6589 | /* Set the field. */ |
6590 | x |= (value & howto->dst_mask); | |
6591 | ||
a6ebf616 | 6592 | /* Detect incorrect JALX usage. If required, turn JAL or BAL into JALX. */ |
9d862524 MR |
6593 | if (!cross_mode_jump_p && jal_reloc_p (r_type)) |
6594 | { | |
6595 | bfd_vma opcode = x >> 26; | |
6596 | ||
6597 | if (r_type == R_MIPS16_26 ? opcode == 0x7 | |
6598 | : r_type == R_MICROMIPS_26_S1 ? opcode == 0x3c | |
6599 | : opcode == 0x1d) | |
6600 | { | |
6601 | info->callbacks->einfo | |
2c1c9679 | 6602 | (_("%X%H: unsupported JALX to the same ISA mode\n"), |
9d862524 | 6603 | input_bfd, input_section, relocation->r_offset); |
0a1b45a2 | 6604 | return true; |
9d862524 MR |
6605 | } |
6606 | } | |
38a7df63 | 6607 | if (cross_mode_jump_p && jal_reloc_p (r_type)) |
b49e97c9 | 6608 | { |
0a1b45a2 | 6609 | bool ok; |
b49e97c9 TS |
6610 | bfd_vma opcode = x >> 26; |
6611 | bfd_vma jalx_opcode; | |
6612 | ||
6613 | /* Check to see if the opcode is already JAL or JALX. */ | |
6614 | if (r_type == R_MIPS16_26) | |
6615 | { | |
6616 | ok = ((opcode == 0x6) || (opcode == 0x7)); | |
6617 | jalx_opcode = 0x7; | |
6618 | } | |
df58fc94 RS |
6619 | else if (r_type == R_MICROMIPS_26_S1) |
6620 | { | |
6621 | ok = ((opcode == 0x3d) || (opcode == 0x3c)); | |
6622 | jalx_opcode = 0x3c; | |
6623 | } | |
b49e97c9 TS |
6624 | else |
6625 | { | |
6626 | ok = ((opcode == 0x3) || (opcode == 0x1d)); | |
6627 | jalx_opcode = 0x1d; | |
6628 | } | |
6629 | ||
3bdf9505 | 6630 | /* If the opcode is not JAL or JALX, there's a problem. We cannot |
07d6d2b8 | 6631 | convert J or JALS to JALX. */ |
b49e97c9 TS |
6632 | if (!ok) |
6633 | { | |
5f68df25 | 6634 | info->callbacks->einfo |
2c1c9679 | 6635 | (_("%X%H: unsupported jump between ISA modes; " |
5f68df25 MR |
6636 | "consider recompiling with interlinking enabled\n"), |
6637 | input_bfd, input_section, relocation->r_offset); | |
0a1b45a2 | 6638 | return true; |
b49e97c9 TS |
6639 | } |
6640 | ||
6641 | /* Make this the JALX opcode. */ | |
2365f8d7 | 6642 | x = (x & ~(0x3fu << 26)) | (jalx_opcode << 26); |
b49e97c9 | 6643 | } |
9d862524 MR |
6644 | else if (cross_mode_jump_p && b_reloc_p (r_type)) |
6645 | { | |
0a1b45a2 | 6646 | bool ok = false; |
a6ebf616 MR |
6647 | bfd_vma opcode = x >> 16; |
6648 | bfd_vma jalx_opcode = 0; | |
70e65ca8 | 6649 | bfd_vma sign_bit = 0; |
a6ebf616 MR |
6650 | bfd_vma addr; |
6651 | bfd_vma dest; | |
6652 | ||
6653 | if (r_type == R_MICROMIPS_PC16_S1) | |
6654 | { | |
6655 | ok = opcode == 0x4060; | |
6656 | jalx_opcode = 0x3c; | |
70e65ca8 | 6657 | sign_bit = 0x10000; |
a6ebf616 MR |
6658 | value <<= 1; |
6659 | } | |
6660 | else if (r_type == R_MIPS_PC16 || r_type == R_MIPS_GNU_REL16_S2) | |
6661 | { | |
6662 | ok = opcode == 0x411; | |
6663 | jalx_opcode = 0x1d; | |
70e65ca8 | 6664 | sign_bit = 0x20000; |
a6ebf616 MR |
6665 | value <<= 2; |
6666 | } | |
6667 | ||
8b10b0b3 | 6668 | if (ok && !bfd_link_pic (info)) |
a6ebf616 | 6669 | { |
8b10b0b3 MR |
6670 | addr = (input_section->output_section->vma |
6671 | + input_section->output_offset | |
6672 | + relocation->r_offset | |
6673 | + 4); | |
70e65ca8 MR |
6674 | dest = (addr |
6675 | + (((value & ((sign_bit << 1) - 1)) ^ sign_bit) - sign_bit)); | |
a6ebf616 | 6676 | |
8b10b0b3 MR |
6677 | if ((addr >> 28) << 28 != (dest >> 28) << 28) |
6678 | { | |
6679 | info->callbacks->einfo | |
2c1c9679 | 6680 | (_("%X%H: cannot convert branch between ISA modes " |
8b10b0b3 MR |
6681 | "to JALX: relocation out of range\n"), |
6682 | input_bfd, input_section, relocation->r_offset); | |
0a1b45a2 | 6683 | return true; |
8b10b0b3 | 6684 | } |
a6ebf616 | 6685 | |
8b10b0b3 MR |
6686 | /* Make this the JALX opcode. */ |
6687 | x = ((dest >> 2) & 0x3ffffff) | jalx_opcode << 26; | |
6688 | } | |
6689 | else if (!mips_elf_hash_table (info)->ignore_branch_isa) | |
a6ebf616 MR |
6690 | { |
6691 | info->callbacks->einfo | |
2c1c9679 | 6692 | (_("%X%H: unsupported branch between ISA modes\n"), |
a6ebf616 | 6693 | input_bfd, input_section, relocation->r_offset); |
0a1b45a2 | 6694 | return true; |
a6ebf616 | 6695 | } |
9d862524 | 6696 | } |
b49e97c9 | 6697 | |
38a7df63 CF |
6698 | /* Try converting JAL to BAL and J(AL)R to B(AL), if the target is in |
6699 | range. */ | |
0e1862bb | 6700 | if (!bfd_link_relocatable (info) |
38a7df63 | 6701 | && !cross_mode_jump_p |
cd8d5a82 CF |
6702 | && ((JAL_TO_BAL_P (input_bfd) |
6703 | && r_type == R_MIPS_26 | |
0e392101 | 6704 | && (x >> 26) == 0x3) /* jal addr */ |
cd8d5a82 CF |
6705 | || (JALR_TO_BAL_P (input_bfd) |
6706 | && r_type == R_MIPS_JALR | |
0e392101 | 6707 | && x == 0x0320f809) /* jalr t9 */ |
38a7df63 CF |
6708 | || (JR_TO_B_P (input_bfd) |
6709 | && r_type == R_MIPS_JALR | |
0e392101 | 6710 | && (x & ~1) == 0x03200008))) /* jr t9 / jalr zero, t9 */ |
1367d393 ILT |
6711 | { |
6712 | bfd_vma addr; | |
6713 | bfd_vma dest; | |
6714 | bfd_signed_vma off; | |
6715 | ||
6716 | addr = (input_section->output_section->vma | |
6717 | + input_section->output_offset | |
6718 | + relocation->r_offset | |
6719 | + 4); | |
6720 | if (r_type == R_MIPS_26) | |
6721 | dest = (value << 2) | ((addr >> 28) << 28); | |
6722 | else | |
6723 | dest = value; | |
6724 | off = dest - addr; | |
6725 | if (off <= 0x1ffff && off >= -0x20000) | |
38a7df63 | 6726 | { |
0e392101 | 6727 | if ((x & ~1) == 0x03200008) /* jr t9 / jalr zero, t9 */ |
38a7df63 CF |
6728 | x = 0x10000000 | (((bfd_vma) off >> 2) & 0xffff); /* b addr */ |
6729 | else | |
6730 | x = 0x04110000 | (((bfd_vma) off >> 2) & 0xffff); /* bal addr */ | |
6731 | } | |
1367d393 ILT |
6732 | } |
6733 | ||
b49e97c9 | 6734 | /* Put the value into the output. */ |
98e10ffa | 6735 | mips_elf_store_contents (howto, relocation, input_bfd, contents, x); |
d6f16593 | 6736 | |
0e1862bb | 6737 | _bfd_mips_elf_reloc_shuffle (input_bfd, r_type, !bfd_link_relocatable (info), |
df58fc94 | 6738 | location); |
d6f16593 | 6739 | |
0a1b45a2 | 6740 | return true; |
b49e97c9 | 6741 | } |
b49e97c9 | 6742 | \f |
b49e97c9 TS |
6743 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL |
6744 | is the original relocation, which is now being transformed into a | |
6745 | dynamic relocation. The ADDENDP is adjusted if necessary; the | |
6746 | caller should store the result in place of the original addend. */ | |
6747 | ||
0a1b45a2 | 6748 | static bool |
9719ad41 RS |
6749 | mips_elf_create_dynamic_relocation (bfd *output_bfd, |
6750 | struct bfd_link_info *info, | |
6751 | const Elf_Internal_Rela *rel, | |
6752 | struct mips_elf_link_hash_entry *h, | |
6753 | asection *sec, bfd_vma symbol, | |
6754 | bfd_vma *addendp, asection *input_section) | |
b49e97c9 | 6755 | { |
947216bf | 6756 | Elf_Internal_Rela outrel[3]; |
b49e97c9 TS |
6757 | asection *sreloc; |
6758 | bfd *dynobj; | |
6759 | int r_type; | |
5d41f0b6 | 6760 | long indx; |
0a1b45a2 | 6761 | bool defined_p; |
0a44bf69 | 6762 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 6763 | |
0a44bf69 | 6764 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
6765 | BFD_ASSERT (htab != NULL); |
6766 | ||
b49e97c9 TS |
6767 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
6768 | dynobj = elf_hash_table (info)->dynobj; | |
0a1b45a2 | 6769 | sreloc = mips_elf_rel_dyn_section (info, false); |
b49e97c9 TS |
6770 | BFD_ASSERT (sreloc != NULL); |
6771 | BFD_ASSERT (sreloc->contents != NULL); | |
6772 | BFD_ASSERT (sreloc->reloc_count * MIPS_ELF_REL_SIZE (output_bfd) | |
eea6121a | 6773 | < sreloc->size); |
b49e97c9 | 6774 | |
b49e97c9 TS |
6775 | outrel[0].r_offset = |
6776 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset); | |
9ddf8309 TS |
6777 | if (ABI_64_P (output_bfd)) |
6778 | { | |
6779 | outrel[1].r_offset = | |
6780 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset); | |
6781 | outrel[2].r_offset = | |
6782 | _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset); | |
6783 | } | |
b49e97c9 | 6784 | |
c5ae1840 | 6785 | if (outrel[0].r_offset == MINUS_ONE) |
0d591ff7 | 6786 | /* The relocation field has been deleted. */ |
0a1b45a2 | 6787 | return true; |
5d41f0b6 RS |
6788 | |
6789 | if (outrel[0].r_offset == MINUS_TWO) | |
0d591ff7 RS |
6790 | { |
6791 | /* The relocation field has been converted into a relative value of | |
6792 | some sort. Functions like _bfd_elf_write_section_eh_frame expect | |
6793 | the field to be fully relocated, so add in the symbol's value. */ | |
0d591ff7 | 6794 | *addendp += symbol; |
0a1b45a2 | 6795 | return true; |
0d591ff7 | 6796 | } |
b49e97c9 | 6797 | |
5d41f0b6 RS |
6798 | /* We must now calculate the dynamic symbol table index to use |
6799 | in the relocation. */ | |
d4a77f3f | 6800 | if (h != NULL && ! SYMBOL_REFERENCES_LOCAL (info, &h->root)) |
5d41f0b6 | 6801 | { |
90c14f0c L |
6802 | BFD_ASSERT (htab->root.target_os == is_vxworks |
6803 | || h->global_got_area != GGA_NONE); | |
5d41f0b6 RS |
6804 | indx = h->root.dynindx; |
6805 | if (SGI_COMPAT (output_bfd)) | |
6806 | defined_p = h->root.def_regular; | |
6807 | else | |
6808 | /* ??? glibc's ld.so just adds the final GOT entry to the | |
6809 | relocation field. It therefore treats relocs against | |
6810 | defined symbols in the same way as relocs against | |
6811 | undefined symbols. */ | |
0a1b45a2 | 6812 | defined_p = false; |
5d41f0b6 | 6813 | } |
b49e97c9 TS |
6814 | else |
6815 | { | |
5d41f0b6 RS |
6816 | if (sec != NULL && bfd_is_abs_section (sec)) |
6817 | indx = 0; | |
6818 | else if (sec == NULL || sec->owner == NULL) | |
fdd07405 | 6819 | { |
5d41f0b6 | 6820 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 6821 | return false; |
b49e97c9 TS |
6822 | } |
6823 | else | |
6824 | { | |
5d41f0b6 | 6825 | indx = elf_section_data (sec->output_section)->dynindx; |
74541ad4 AM |
6826 | if (indx == 0) |
6827 | { | |
6828 | asection *osec = htab->root.text_index_section; | |
6829 | indx = elf_section_data (osec)->dynindx; | |
6830 | } | |
5d41f0b6 RS |
6831 | if (indx == 0) |
6832 | abort (); | |
b49e97c9 TS |
6833 | } |
6834 | ||
5d41f0b6 RS |
6835 | /* Instead of generating a relocation using the section |
6836 | symbol, we may as well make it a fully relative | |
6837 | relocation. We want to avoid generating relocations to | |
6838 | local symbols because we used to generate them | |
6839 | incorrectly, without adding the original symbol value, | |
6840 | which is mandated by the ABI for section symbols. In | |
6841 | order to give dynamic loaders and applications time to | |
6842 | phase out the incorrect use, we refrain from emitting | |
6843 | section-relative relocations. It's not like they're | |
6844 | useful, after all. This should be a bit more efficient | |
6845 | as well. */ | |
6846 | /* ??? Although this behavior is compatible with glibc's ld.so, | |
6847 | the ABI says that relocations against STN_UNDEF should have | |
6848 | a symbol value of 0. Irix rld honors this, so relocations | |
6849 | against STN_UNDEF have no effect. */ | |
6850 | if (!SGI_COMPAT (output_bfd)) | |
6851 | indx = 0; | |
0a1b45a2 | 6852 | defined_p = true; |
b49e97c9 TS |
6853 | } |
6854 | ||
5d41f0b6 RS |
6855 | /* If the relocation was previously an absolute relocation and |
6856 | this symbol will not be referred to by the relocation, we must | |
6857 | adjust it by the value we give it in the dynamic symbol table. | |
6858 | Otherwise leave the job up to the dynamic linker. */ | |
6859 | if (defined_p && r_type != R_MIPS_REL32) | |
6860 | *addendp += symbol; | |
6861 | ||
90c14f0c | 6862 | if (htab->root.target_os == is_vxworks) |
0a44bf69 RS |
6863 | /* VxWorks uses non-relative relocations for this. */ |
6864 | outrel[0].r_info = ELF32_R_INFO (indx, R_MIPS_32); | |
6865 | else | |
6866 | /* The relocation is always an REL32 relocation because we don't | |
6867 | know where the shared library will wind up at load-time. */ | |
6868 | outrel[0].r_info = ELF_R_INFO (output_bfd, (unsigned long) indx, | |
6869 | R_MIPS_REL32); | |
6870 | ||
5d41f0b6 RS |
6871 | /* For strict adherence to the ABI specification, we should |
6872 | generate a R_MIPS_64 relocation record by itself before the | |
6873 | _REL32/_64 record as well, such that the addend is read in as | |
6874 | a 64-bit value (REL32 is a 32-bit relocation, after all). | |
6875 | However, since none of the existing ELF64 MIPS dynamic | |
6876 | loaders seems to care, we don't waste space with these | |
6877 | artificial relocations. If this turns out to not be true, | |
6878 | mips_elf_allocate_dynamic_relocation() should be tweaked so | |
6879 | as to make room for a pair of dynamic relocations per | |
6880 | invocation if ABI_64_P, and here we should generate an | |
6881 | additional relocation record with R_MIPS_64 by itself for a | |
6882 | NULL symbol before this relocation record. */ | |
6883 | outrel[1].r_info = ELF_R_INFO (output_bfd, 0, | |
6884 | ABI_64_P (output_bfd) | |
6885 | ? R_MIPS_64 | |
6886 | : R_MIPS_NONE); | |
6887 | outrel[2].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_NONE); | |
6888 | ||
6889 | /* Adjust the output offset of the relocation to reference the | |
6890 | correct location in the output file. */ | |
6891 | outrel[0].r_offset += (input_section->output_section->vma | |
6892 | + input_section->output_offset); | |
6893 | outrel[1].r_offset += (input_section->output_section->vma | |
6894 | + input_section->output_offset); | |
6895 | outrel[2].r_offset += (input_section->output_section->vma | |
6896 | + input_section->output_offset); | |
6897 | ||
b49e97c9 TS |
6898 | /* Put the relocation back out. We have to use the special |
6899 | relocation outputter in the 64-bit case since the 64-bit | |
6900 | relocation format is non-standard. */ | |
6901 | if (ABI_64_P (output_bfd)) | |
6902 | { | |
6903 | (*get_elf_backend_data (output_bfd)->s->swap_reloc_out) | |
6904 | (output_bfd, &outrel[0], | |
6905 | (sreloc->contents | |
6906 | + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel))); | |
6907 | } | |
90c14f0c | 6908 | else if (htab->root.target_os == is_vxworks) |
0a44bf69 RS |
6909 | { |
6910 | /* VxWorks uses RELA rather than REL dynamic relocations. */ | |
6911 | outrel[0].r_addend = *addendp; | |
6912 | bfd_elf32_swap_reloca_out | |
6913 | (output_bfd, &outrel[0], | |
6914 | (sreloc->contents | |
6915 | + sreloc->reloc_count * sizeof (Elf32_External_Rela))); | |
6916 | } | |
b49e97c9 | 6917 | else |
947216bf AM |
6918 | bfd_elf32_swap_reloc_out |
6919 | (output_bfd, &outrel[0], | |
6920 | (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel))); | |
b49e97c9 | 6921 | |
b49e97c9 TS |
6922 | /* We've now added another relocation. */ |
6923 | ++sreloc->reloc_count; | |
6924 | ||
6925 | /* Make sure the output section is writable. The dynamic linker | |
6926 | will be writing to it. */ | |
6927 | elf_section_data (input_section->output_section)->this_hdr.sh_flags | |
6928 | |= SHF_WRITE; | |
6929 | ||
6930 | /* On IRIX5, make an entry of compact relocation info. */ | |
5d41f0b6 | 6931 | if (IRIX_COMPAT (output_bfd) == ict_irix5) |
b49e97c9 | 6932 | { |
3d4d4302 | 6933 | asection *scpt = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
6934 | bfd_byte *cr; |
6935 | ||
6936 | if (scpt) | |
6937 | { | |
6938 | Elf32_crinfo cptrel; | |
6939 | ||
6940 | mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); | |
6941 | cptrel.vaddr = (rel->r_offset | |
6942 | + input_section->output_section->vma | |
6943 | + input_section->output_offset); | |
6944 | if (r_type == R_MIPS_REL32) | |
6945 | mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); | |
6946 | else | |
6947 | mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); | |
6948 | mips_elf_set_cr_dist2to (cptrel, 0); | |
6949 | cptrel.konst = *addendp; | |
6950 | ||
6951 | cr = (scpt->contents | |
6952 | + sizeof (Elf32_External_compact_rel)); | |
abc0f8d0 | 6953 | mips_elf_set_cr_relvaddr (cptrel, 0); |
b49e97c9 TS |
6954 | bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, |
6955 | ((Elf32_External_crinfo *) cr | |
6956 | + scpt->reloc_count)); | |
6957 | ++scpt->reloc_count; | |
6958 | } | |
6959 | } | |
6960 | ||
943284cc DJ |
6961 | /* If we've written this relocation for a readonly section, |
6962 | we need to set DF_TEXTREL again, so that we do not delete the | |
6963 | DT_TEXTREL tag. */ | |
6964 | if (MIPS_ELF_READONLY_SECTION (input_section)) | |
6965 | info->flags |= DF_TEXTREL; | |
6966 | ||
0a1b45a2 | 6967 | return true; |
b49e97c9 TS |
6968 | } |
6969 | \f | |
b49e97c9 TS |
6970 | /* Return the MACH for a MIPS e_flags value. */ |
6971 | ||
6972 | unsigned long | |
9719ad41 | 6973 | _bfd_elf_mips_mach (flagword flags) |
b49e97c9 TS |
6974 | { |
6975 | switch (flags & EF_MIPS_MACH) | |
6976 | { | |
6977 | case E_MIPS_MACH_3900: | |
6978 | return bfd_mach_mips3900; | |
6979 | ||
6980 | case E_MIPS_MACH_4010: | |
6981 | return bfd_mach_mips4010; | |
6982 | ||
6983 | case E_MIPS_MACH_4100: | |
6984 | return bfd_mach_mips4100; | |
6985 | ||
6986 | case E_MIPS_MACH_4111: | |
6987 | return bfd_mach_mips4111; | |
6988 | ||
00707a0e RS |
6989 | case E_MIPS_MACH_4120: |
6990 | return bfd_mach_mips4120; | |
6991 | ||
b49e97c9 TS |
6992 | case E_MIPS_MACH_4650: |
6993 | return bfd_mach_mips4650; | |
6994 | ||
00707a0e RS |
6995 | case E_MIPS_MACH_5400: |
6996 | return bfd_mach_mips5400; | |
6997 | ||
6998 | case E_MIPS_MACH_5500: | |
6999 | return bfd_mach_mips5500; | |
7000 | ||
e407c74b NC |
7001 | case E_MIPS_MACH_5900: |
7002 | return bfd_mach_mips5900; | |
7003 | ||
0d2e43ed ILT |
7004 | case E_MIPS_MACH_9000: |
7005 | return bfd_mach_mips9000; | |
7006 | ||
b49e97c9 TS |
7007 | case E_MIPS_MACH_SB1: |
7008 | return bfd_mach_mips_sb1; | |
7009 | ||
350cc38d MS |
7010 | case E_MIPS_MACH_LS2E: |
7011 | return bfd_mach_mips_loongson_2e; | |
7012 | ||
7013 | case E_MIPS_MACH_LS2F: | |
7014 | return bfd_mach_mips_loongson_2f; | |
7015 | ||
ac8cb70f CX |
7016 | case E_MIPS_MACH_GS464: |
7017 | return bfd_mach_mips_gs464; | |
fd503541 | 7018 | |
bd782c07 CX |
7019 | case E_MIPS_MACH_GS464E: |
7020 | return bfd_mach_mips_gs464e; | |
7021 | ||
9108bc33 CX |
7022 | case E_MIPS_MACH_GS264E: |
7023 | return bfd_mach_mips_gs264e; | |
7024 | ||
2c629856 N |
7025 | case E_MIPS_MACH_OCTEON3: |
7026 | return bfd_mach_mips_octeon3; | |
7027 | ||
432233b3 AP |
7028 | case E_MIPS_MACH_OCTEON2: |
7029 | return bfd_mach_mips_octeon2; | |
7030 | ||
6f179bd0 AN |
7031 | case E_MIPS_MACH_OCTEON: |
7032 | return bfd_mach_mips_octeon; | |
7033 | ||
52b6b6b9 JM |
7034 | case E_MIPS_MACH_XLR: |
7035 | return bfd_mach_mips_xlr; | |
7036 | ||
38bf472a MR |
7037 | case E_MIPS_MACH_IAMR2: |
7038 | return bfd_mach_mips_interaptiv_mr2; | |
7039 | ||
b49e97c9 TS |
7040 | default: |
7041 | switch (flags & EF_MIPS_ARCH) | |
7042 | { | |
7043 | default: | |
7044 | case E_MIPS_ARCH_1: | |
7045 | return bfd_mach_mips3000; | |
b49e97c9 TS |
7046 | |
7047 | case E_MIPS_ARCH_2: | |
7048 | return bfd_mach_mips6000; | |
b49e97c9 TS |
7049 | |
7050 | case E_MIPS_ARCH_3: | |
7051 | return bfd_mach_mips4000; | |
b49e97c9 TS |
7052 | |
7053 | case E_MIPS_ARCH_4: | |
7054 | return bfd_mach_mips8000; | |
b49e97c9 TS |
7055 | |
7056 | case E_MIPS_ARCH_5: | |
7057 | return bfd_mach_mips5; | |
b49e97c9 TS |
7058 | |
7059 | case E_MIPS_ARCH_32: | |
7060 | return bfd_mach_mipsisa32; | |
b49e97c9 TS |
7061 | |
7062 | case E_MIPS_ARCH_64: | |
7063 | return bfd_mach_mipsisa64; | |
af7ee8bf CD |
7064 | |
7065 | case E_MIPS_ARCH_32R2: | |
7066 | return bfd_mach_mipsisa32r2; | |
5f74bc13 CD |
7067 | |
7068 | case E_MIPS_ARCH_64R2: | |
7069 | return bfd_mach_mipsisa64r2; | |
7361da2c AB |
7070 | |
7071 | case E_MIPS_ARCH_32R6: | |
7072 | return bfd_mach_mipsisa32r6; | |
7073 | ||
7074 | case E_MIPS_ARCH_64R6: | |
7075 | return bfd_mach_mipsisa64r6; | |
b49e97c9 TS |
7076 | } |
7077 | } | |
7078 | ||
7079 | return 0; | |
7080 | } | |
7081 | ||
7082 | /* Return printable name for ABI. */ | |
7083 | ||
42eec46f | 7084 | static inline char * |
9719ad41 | 7085 | elf_mips_abi_name (bfd *abfd) |
b49e97c9 TS |
7086 | { |
7087 | flagword flags; | |
7088 | ||
7089 | flags = elf_elfheader (abfd)->e_flags; | |
7090 | switch (flags & EF_MIPS_ABI) | |
7091 | { | |
7092 | case 0: | |
7093 | if (ABI_N32_P (abfd)) | |
7094 | return "N32"; | |
7095 | else if (ABI_64_P (abfd)) | |
7096 | return "64"; | |
7097 | else | |
7098 | return "none"; | |
7099 | case E_MIPS_ABI_O32: | |
7100 | return "O32"; | |
7101 | case E_MIPS_ABI_O64: | |
7102 | return "O64"; | |
7103 | case E_MIPS_ABI_EABI32: | |
7104 | return "EABI32"; | |
7105 | case E_MIPS_ABI_EABI64: | |
7106 | return "EABI64"; | |
7107 | default: | |
7108 | return "unknown abi"; | |
7109 | } | |
7110 | } | |
7111 | \f | |
7112 | /* MIPS ELF uses two common sections. One is the usual one, and the | |
7113 | other is for small objects. All the small objects are kept | |
7114 | together, and then referenced via the gp pointer, which yields | |
7115 | faster assembler code. This is what we use for the small common | |
7116 | section. This approach is copied from ecoff.c. */ | |
7117 | static asection mips_elf_scom_section; | |
7f3a18cf AM |
7118 | static const asymbol mips_elf_scom_symbol = |
7119 | GLOBAL_SYM_INIT (".scommon", &mips_elf_scom_section); | |
7120 | static asection mips_elf_scom_section = | |
7121 | BFD_FAKE_SECTION (mips_elf_scom_section, &mips_elf_scom_symbol, | |
7122 | ".scommon", 0, SEC_IS_COMMON | SEC_SMALL_DATA); | |
b49e97c9 TS |
7123 | |
7124 | /* MIPS ELF also uses an acommon section, which represents an | |
7125 | allocated common symbol which may be overridden by a | |
7126 | definition in a shared library. */ | |
7127 | static asection mips_elf_acom_section; | |
7f3a18cf AM |
7128 | static const asymbol mips_elf_acom_symbol = |
7129 | GLOBAL_SYM_INIT (".acommon", &mips_elf_acom_section); | |
7130 | static asection mips_elf_acom_section = | |
7131 | BFD_FAKE_SECTION (mips_elf_acom_section, &mips_elf_acom_symbol, | |
7132 | ".acommon", 0, SEC_ALLOC); | |
b49e97c9 | 7133 | |
738e5348 | 7134 | /* This is used for both the 32-bit and the 64-bit ABI. */ |
b49e97c9 TS |
7135 | |
7136 | void | |
9719ad41 | 7137 | _bfd_mips_elf_symbol_processing (bfd *abfd, asymbol *asym) |
b49e97c9 TS |
7138 | { |
7139 | elf_symbol_type *elfsym; | |
7140 | ||
738e5348 | 7141 | /* Handle the special MIPS section numbers that a symbol may use. */ |
b49e97c9 TS |
7142 | elfsym = (elf_symbol_type *) asym; |
7143 | switch (elfsym->internal_elf_sym.st_shndx) | |
7144 | { | |
7145 | case SHN_MIPS_ACOMMON: | |
7146 | /* This section is used in a dynamically linked executable file. | |
7147 | It is an allocated common section. The dynamic linker can | |
7148 | either resolve these symbols to something in a shared | |
7149 | library, or it can just leave them here. For our purposes, | |
7150 | we can consider these symbols to be in a new section. */ | |
b49e97c9 TS |
7151 | asym->section = &mips_elf_acom_section; |
7152 | break; | |
7153 | ||
7154 | case SHN_COMMON: | |
7155 | /* Common symbols less than the GP size are automatically | |
7156 | treated as SHN_MIPS_SCOMMON symbols on IRIX5. */ | |
7157 | if (asym->value > elf_gp_size (abfd) | |
b59eed79 | 7158 | || ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_TLS |
b49e97c9 TS |
7159 | || IRIX_COMPAT (abfd) == ict_irix6) |
7160 | break; | |
7161 | /* Fall through. */ | |
7162 | case SHN_MIPS_SCOMMON: | |
b49e97c9 TS |
7163 | asym->section = &mips_elf_scom_section; |
7164 | asym->value = elfsym->internal_elf_sym.st_size; | |
7165 | break; | |
7166 | ||
7167 | case SHN_MIPS_SUNDEFINED: | |
7168 | asym->section = bfd_und_section_ptr; | |
7169 | break; | |
7170 | ||
b49e97c9 | 7171 | case SHN_MIPS_TEXT: |
00b4930b TS |
7172 | { |
7173 | asection *section = bfd_get_section_by_name (abfd, ".text"); | |
7174 | ||
00b4930b TS |
7175 | if (section != NULL) |
7176 | { | |
7177 | asym->section = section; | |
7178 | /* MIPS_TEXT is a bit special, the address is not an offset | |
de194d85 | 7179 | to the base of the .text section. So subtract the section |
00b4930b TS |
7180 | base address to make it an offset. */ |
7181 | asym->value -= section->vma; | |
7182 | } | |
7183 | } | |
b49e97c9 TS |
7184 | break; |
7185 | ||
7186 | case SHN_MIPS_DATA: | |
00b4930b TS |
7187 | { |
7188 | asection *section = bfd_get_section_by_name (abfd, ".data"); | |
7189 | ||
00b4930b TS |
7190 | if (section != NULL) |
7191 | { | |
7192 | asym->section = section; | |
7193 | /* MIPS_DATA is a bit special, the address is not an offset | |
de194d85 | 7194 | to the base of the .data section. So subtract the section |
00b4930b TS |
7195 | base address to make it an offset. */ |
7196 | asym->value -= section->vma; | |
7197 | } | |
7198 | } | |
b49e97c9 | 7199 | break; |
b49e97c9 | 7200 | } |
738e5348 | 7201 | |
df58fc94 RS |
7202 | /* If this is an odd-valued function symbol, assume it's a MIPS16 |
7203 | or microMIPS one. */ | |
738e5348 RS |
7204 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_FUNC |
7205 | && (asym->value & 1) != 0) | |
7206 | { | |
7207 | asym->value--; | |
e8faf7d1 | 7208 | if (MICROMIPS_P (abfd)) |
df58fc94 RS |
7209 | elfsym->internal_elf_sym.st_other |
7210 | = ELF_ST_SET_MICROMIPS (elfsym->internal_elf_sym.st_other); | |
7211 | else | |
7212 | elfsym->internal_elf_sym.st_other | |
7213 | = ELF_ST_SET_MIPS16 (elfsym->internal_elf_sym.st_other); | |
738e5348 | 7214 | } |
b49e97c9 TS |
7215 | } |
7216 | \f | |
8c946ed5 RS |
7217 | /* Implement elf_backend_eh_frame_address_size. This differs from |
7218 | the default in the way it handles EABI64. | |
7219 | ||
7220 | EABI64 was originally specified as an LP64 ABI, and that is what | |
7221 | -mabi=eabi normally gives on a 64-bit target. However, gcc has | |
7222 | historically accepted the combination of -mabi=eabi and -mlong32, | |
7223 | and this ILP32 variation has become semi-official over time. | |
7224 | Both forms use elf32 and have pointer-sized FDE addresses. | |
7225 | ||
7226 | If an EABI object was generated by GCC 4.0 or above, it will have | |
7227 | an empty .gcc_compiled_longXX section, where XX is the size of longs | |
7228 | in bits. Unfortunately, ILP32 objects generated by earlier compilers | |
7229 | have no special marking to distinguish them from LP64 objects. | |
7230 | ||
7231 | We don't want users of the official LP64 ABI to be punished for the | |
7232 | existence of the ILP32 variant, but at the same time, we don't want | |
7233 | to mistakenly interpret pre-4.0 ILP32 objects as being LP64 objects. | |
7234 | We therefore take the following approach: | |
7235 | ||
7236 | - If ABFD contains a .gcc_compiled_longXX section, use it to | |
07d6d2b8 | 7237 | determine the pointer size. |
8c946ed5 RS |
7238 | |
7239 | - Otherwise check the type of the first relocation. Assume that | |
07d6d2b8 | 7240 | the LP64 ABI is being used if the relocation is of type R_MIPS_64. |
8c946ed5 RS |
7241 | |
7242 | - Otherwise punt. | |
7243 | ||
7244 | The second check is enough to detect LP64 objects generated by pre-4.0 | |
7245 | compilers because, in the kind of output generated by those compilers, | |
7246 | the first relocation will be associated with either a CIE personality | |
7247 | routine or an FDE start address. Furthermore, the compilers never | |
7248 | used a special (non-pointer) encoding for this ABI. | |
7249 | ||
7250 | Checking the relocation type should also be safe because there is no | |
7251 | reason to use R_MIPS_64 in an ILP32 object. Pre-4.0 compilers never | |
7252 | did so. */ | |
7253 | ||
7254 | unsigned int | |
76c20d54 | 7255 | _bfd_mips_elf_eh_frame_address_size (bfd *abfd, const asection *sec) |
8c946ed5 RS |
7256 | { |
7257 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) | |
7258 | return 8; | |
7259 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
7260 | { | |
0a1b45a2 | 7261 | bool long32_p, long64_p; |
8c946ed5 RS |
7262 | |
7263 | long32_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long32") != 0; | |
7264 | long64_p = bfd_get_section_by_name (abfd, ".gcc_compiled_long64") != 0; | |
7265 | if (long32_p && long64_p) | |
7266 | return 0; | |
7267 | if (long32_p) | |
7268 | return 4; | |
7269 | if (long64_p) | |
7270 | return 8; | |
7271 | ||
7272 | if (sec->reloc_count > 0 | |
7273 | && elf_section_data (sec)->relocs != NULL | |
7274 | && (ELF32_R_TYPE (elf_section_data (sec)->relocs[0].r_info) | |
7275 | == R_MIPS_64)) | |
7276 | return 8; | |
7277 | ||
7278 | return 0; | |
7279 | } | |
7280 | return 4; | |
7281 | } | |
7282 | \f | |
174fd7f9 RS |
7283 | /* There appears to be a bug in the MIPSpro linker that causes GOT_DISP |
7284 | relocations against two unnamed section symbols to resolve to the | |
7285 | same address. For example, if we have code like: | |
7286 | ||
7287 | lw $4,%got_disp(.data)($gp) | |
7288 | lw $25,%got_disp(.text)($gp) | |
7289 | jalr $25 | |
7290 | ||
7291 | then the linker will resolve both relocations to .data and the program | |
7292 | will jump there rather than to .text. | |
7293 | ||
7294 | We can work around this problem by giving names to local section symbols. | |
7295 | This is also what the MIPSpro tools do. */ | |
7296 | ||
0a1b45a2 | 7297 | bool |
174fd7f9 RS |
7298 | _bfd_mips_elf_name_local_section_symbols (bfd *abfd) |
7299 | { | |
c77cb2a0 | 7300 | return elf_elfheader (abfd)->e_type == ET_REL && SGI_COMPAT (abfd); |
174fd7f9 RS |
7301 | } |
7302 | \f | |
b49e97c9 TS |
7303 | /* Work over a section just before writing it out. This routine is |
7304 | used by both the 32-bit and the 64-bit ABI. FIXME: We recognize | |
7305 | sections that need the SHF_MIPS_GPREL flag by name; there has to be | |
7306 | a better way. */ | |
7307 | ||
0a1b45a2 | 7308 | bool |
9719ad41 | 7309 | _bfd_mips_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *hdr) |
b49e97c9 TS |
7310 | { |
7311 | if (hdr->sh_type == SHT_MIPS_REGINFO | |
7312 | && hdr->sh_size > 0) | |
7313 | { | |
7314 | bfd_byte buf[4]; | |
7315 | ||
b49e97c9 TS |
7316 | BFD_ASSERT (hdr->contents == NULL); |
7317 | ||
2d6dda71 MR |
7318 | if (hdr->sh_size != sizeof (Elf32_External_RegInfo)) |
7319 | { | |
7320 | _bfd_error_handler | |
2c1c9679 | 7321 | (_("%pB: incorrect `.reginfo' section size; " |
2dcf00ce AM |
7322 | "expected %" PRIu64 ", got %" PRIu64), |
7323 | abfd, (uint64_t) sizeof (Elf32_External_RegInfo), | |
7324 | (uint64_t) hdr->sh_size); | |
2d6dda71 | 7325 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 7326 | return false; |
2d6dda71 MR |
7327 | } |
7328 | ||
b49e97c9 TS |
7329 | if (bfd_seek (abfd, |
7330 | hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, | |
7331 | SEEK_SET) != 0) | |
0a1b45a2 | 7332 | return false; |
b49e97c9 | 7333 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 7334 | if (bfd_bwrite (buf, 4, abfd) != 4) |
0a1b45a2 | 7335 | return false; |
b49e97c9 TS |
7336 | } |
7337 | ||
7338 | if (hdr->sh_type == SHT_MIPS_OPTIONS | |
7339 | && hdr->bfd_section != NULL | |
f0abc2a1 AM |
7340 | && mips_elf_section_data (hdr->bfd_section) != NULL |
7341 | && mips_elf_section_data (hdr->bfd_section)->u.tdata != NULL) | |
b49e97c9 TS |
7342 | { |
7343 | bfd_byte *contents, *l, *lend; | |
7344 | ||
f0abc2a1 AM |
7345 | /* We stored the section contents in the tdata field in the |
7346 | set_section_contents routine. We save the section contents | |
7347 | so that we don't have to read them again. | |
b49e97c9 TS |
7348 | At this point we know that elf_gp is set, so we can look |
7349 | through the section contents to see if there is an | |
7350 | ODK_REGINFO structure. */ | |
7351 | ||
f0abc2a1 | 7352 | contents = mips_elf_section_data (hdr->bfd_section)->u.tdata; |
b49e97c9 TS |
7353 | l = contents; |
7354 | lend = contents + hdr->sh_size; | |
7355 | while (l + sizeof (Elf_External_Options) <= lend) | |
7356 | { | |
7357 | Elf_Internal_Options intopt; | |
7358 | ||
7359 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
7360 | &intopt); | |
1bc8074d MR |
7361 | if (intopt.size < sizeof (Elf_External_Options)) |
7362 | { | |
4eca0228 | 7363 | _bfd_error_handler |
695344c0 | 7364 | /* xgettext:c-format */ |
2c1c9679 | 7365 | (_("%pB: warning: bad `%s' option size %u smaller than" |
63a5468a | 7366 | " its header"), |
1bc8074d MR |
7367 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd), intopt.size); |
7368 | break; | |
7369 | } | |
b49e97c9 TS |
7370 | if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO) |
7371 | { | |
7372 | bfd_byte buf[8]; | |
7373 | ||
7374 | if (bfd_seek (abfd, | |
7375 | (hdr->sh_offset | |
7376 | + (l - contents) | |
7377 | + sizeof (Elf_External_Options) | |
7378 | + (sizeof (Elf64_External_RegInfo) - 8)), | |
7379 | SEEK_SET) != 0) | |
0a1b45a2 | 7380 | return false; |
b49e97c9 | 7381 | H_PUT_64 (abfd, elf_gp (abfd), buf); |
9719ad41 | 7382 | if (bfd_bwrite (buf, 8, abfd) != 8) |
0a1b45a2 | 7383 | return false; |
b49e97c9 TS |
7384 | } |
7385 | else if (intopt.kind == ODK_REGINFO) | |
7386 | { | |
7387 | bfd_byte buf[4]; | |
7388 | ||
7389 | if (bfd_seek (abfd, | |
7390 | (hdr->sh_offset | |
7391 | + (l - contents) | |
7392 | + sizeof (Elf_External_Options) | |
7393 | + (sizeof (Elf32_External_RegInfo) - 4)), | |
7394 | SEEK_SET) != 0) | |
0a1b45a2 | 7395 | return false; |
b49e97c9 | 7396 | H_PUT_32 (abfd, elf_gp (abfd), buf); |
9719ad41 | 7397 | if (bfd_bwrite (buf, 4, abfd) != 4) |
0a1b45a2 | 7398 | return false; |
b49e97c9 TS |
7399 | } |
7400 | l += intopt.size; | |
7401 | } | |
7402 | } | |
7403 | ||
7404 | if (hdr->bfd_section != NULL) | |
7405 | { | |
fd361982 | 7406 | const char *name = bfd_section_name (hdr->bfd_section); |
b49e97c9 | 7407 | |
2d0f9ad9 JM |
7408 | /* .sbss is not handled specially here because the GNU/Linux |
7409 | prelinker can convert .sbss from NOBITS to PROGBITS and | |
7410 | changing it back to NOBITS breaks the binary. The entry in | |
7411 | _bfd_mips_elf_special_sections will ensure the correct flags | |
7412 | are set on .sbss if BFD creates it without reading it from an | |
7413 | input file, and without special handling here the flags set | |
7414 | on it in an input file will be followed. */ | |
b49e97c9 TS |
7415 | if (strcmp (name, ".sdata") == 0 |
7416 | || strcmp (name, ".lit8") == 0 | |
7417 | || strcmp (name, ".lit4") == 0) | |
fd6f9d17 | 7418 | hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
b49e97c9 | 7419 | else if (strcmp (name, ".srdata") == 0) |
fd6f9d17 | 7420 | hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL; |
b49e97c9 | 7421 | else if (strcmp (name, ".compact_rel") == 0) |
fd6f9d17 | 7422 | hdr->sh_flags = 0; |
b49e97c9 TS |
7423 | else if (strcmp (name, ".rtproc") == 0) |
7424 | { | |
7425 | if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) | |
7426 | { | |
7427 | unsigned int adjust; | |
7428 | ||
7429 | adjust = hdr->sh_size % hdr->sh_addralign; | |
7430 | if (adjust != 0) | |
7431 | hdr->sh_size += hdr->sh_addralign - adjust; | |
7432 | } | |
7433 | } | |
7434 | } | |
7435 | ||
0a1b45a2 | 7436 | return true; |
b49e97c9 TS |
7437 | } |
7438 | ||
7439 | /* Handle a MIPS specific section when reading an object file. This | |
7440 | is called when elfcode.h finds a section with an unknown type. | |
bf577467 | 7441 | This routine supports both the 32-bit and 64-bit ELF ABI. */ |
b49e97c9 | 7442 | |
0a1b45a2 | 7443 | bool |
6dc132d9 L |
7444 | _bfd_mips_elf_section_from_shdr (bfd *abfd, |
7445 | Elf_Internal_Shdr *hdr, | |
7446 | const char *name, | |
7447 | int shindex) | |
b49e97c9 TS |
7448 | { |
7449 | flagword flags = 0; | |
7450 | ||
7451 | /* There ought to be a place to keep ELF backend specific flags, but | |
7452 | at the moment there isn't one. We just keep track of the | |
7453 | sections by their name, instead. Fortunately, the ABI gives | |
7454 | suggested names for all the MIPS specific sections, so we will | |
7455 | probably get away with this. */ | |
7456 | switch (hdr->sh_type) | |
7457 | { | |
7458 | case SHT_MIPS_LIBLIST: | |
7459 | if (strcmp (name, ".liblist") != 0) | |
0a1b45a2 | 7460 | return false; |
b49e97c9 TS |
7461 | break; |
7462 | case SHT_MIPS_MSYM: | |
7463 | if (strcmp (name, ".msym") != 0) | |
0a1b45a2 | 7464 | return false; |
b49e97c9 TS |
7465 | break; |
7466 | case SHT_MIPS_CONFLICT: | |
7467 | if (strcmp (name, ".conflict") != 0) | |
0a1b45a2 | 7468 | return false; |
b49e97c9 TS |
7469 | break; |
7470 | case SHT_MIPS_GPTAB: | |
08dedd66 | 7471 | if (! startswith (name, ".gptab.")) |
0a1b45a2 | 7472 | return false; |
b49e97c9 TS |
7473 | break; |
7474 | case SHT_MIPS_UCODE: | |
7475 | if (strcmp (name, ".ucode") != 0) | |
0a1b45a2 | 7476 | return false; |
b49e97c9 TS |
7477 | break; |
7478 | case SHT_MIPS_DEBUG: | |
7479 | if (strcmp (name, ".mdebug") != 0) | |
0a1b45a2 | 7480 | return false; |
b49e97c9 TS |
7481 | flags = SEC_DEBUGGING; |
7482 | break; | |
7483 | case SHT_MIPS_REGINFO: | |
7484 | if (strcmp (name, ".reginfo") != 0 | |
7485 | || hdr->sh_size != sizeof (Elf32_External_RegInfo)) | |
0a1b45a2 | 7486 | return false; |
b49e97c9 TS |
7487 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); |
7488 | break; | |
7489 | case SHT_MIPS_IFACE: | |
7490 | if (strcmp (name, ".MIPS.interfaces") != 0) | |
0a1b45a2 | 7491 | return false; |
b49e97c9 TS |
7492 | break; |
7493 | case SHT_MIPS_CONTENT: | |
08dedd66 | 7494 | if (! startswith (name, ".MIPS.content")) |
0a1b45a2 | 7495 | return false; |
b49e97c9 TS |
7496 | break; |
7497 | case SHT_MIPS_OPTIONS: | |
cc2e31b9 | 7498 | if (!MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
0a1b45a2 | 7499 | return false; |
b49e97c9 | 7500 | break; |
351cdf24 MF |
7501 | case SHT_MIPS_ABIFLAGS: |
7502 | if (!MIPS_ELF_ABIFLAGS_SECTION_NAME_P (name)) | |
0a1b45a2 | 7503 | return false; |
351cdf24 MF |
7504 | flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); |
7505 | break; | |
b49e97c9 | 7506 | case SHT_MIPS_DWARF: |
08dedd66 | 7507 | if (! startswith (name, ".debug_") |
9a39f738 YS |
7508 | && ! startswith (name, ".gnu.debuglto_.debug_") |
7509 | && ! startswith (name, ".zdebug_") | |
7510 | && ! startswith (name, ".gnu.debuglto_.zdebug_")) | |
0a1b45a2 | 7511 | return false; |
b49e97c9 TS |
7512 | break; |
7513 | case SHT_MIPS_SYMBOL_LIB: | |
7514 | if (strcmp (name, ".MIPS.symlib") != 0) | |
0a1b45a2 | 7515 | return false; |
b49e97c9 TS |
7516 | break; |
7517 | case SHT_MIPS_EVENTS: | |
08dedd66 ML |
7518 | if (! startswith (name, ".MIPS.events") |
7519 | && ! startswith (name, ".MIPS.post_rel")) | |
0a1b45a2 | 7520 | return false; |
b49e97c9 | 7521 | break; |
f16a9783 MS |
7522 | case SHT_MIPS_XHASH: |
7523 | if (strcmp (name, ".MIPS.xhash") != 0) | |
0a1b45a2 | 7524 | return false; |
b49e97c9 | 7525 | default: |
cc2e31b9 | 7526 | break; |
b49e97c9 TS |
7527 | } |
7528 | ||
6dc132d9 | 7529 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
0a1b45a2 | 7530 | return false; |
b49e97c9 | 7531 | |
bf577467 AM |
7532 | if (hdr->sh_flags & SHF_MIPS_GPREL) |
7533 | flags |= SEC_SMALL_DATA; | |
7534 | ||
b49e97c9 TS |
7535 | if (flags) |
7536 | { | |
fd361982 AM |
7537 | if (!bfd_set_section_flags (hdr->bfd_section, |
7538 | (bfd_section_flags (hdr->bfd_section) | |
7539 | | flags))) | |
0a1b45a2 | 7540 | return false; |
b49e97c9 TS |
7541 | } |
7542 | ||
351cdf24 MF |
7543 | if (hdr->sh_type == SHT_MIPS_ABIFLAGS) |
7544 | { | |
7545 | Elf_External_ABIFlags_v0 ext; | |
7546 | ||
7547 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, | |
7548 | &ext, 0, sizeof ext)) | |
0a1b45a2 | 7549 | return false; |
351cdf24 MF |
7550 | bfd_mips_elf_swap_abiflags_v0_in (abfd, &ext, |
7551 | &mips_elf_tdata (abfd)->abiflags); | |
7552 | if (mips_elf_tdata (abfd)->abiflags.version != 0) | |
0a1b45a2 AM |
7553 | return false; |
7554 | mips_elf_tdata (abfd)->abiflags_valid = true; | |
351cdf24 MF |
7555 | } |
7556 | ||
b49e97c9 TS |
7557 | /* FIXME: We should record sh_info for a .gptab section. */ |
7558 | ||
7559 | /* For a .reginfo section, set the gp value in the tdata information | |
7560 | from the contents of this section. We need the gp value while | |
7561 | processing relocs, so we just get it now. The .reginfo section | |
7562 | is not used in the 64-bit MIPS ELF ABI. */ | |
7563 | if (hdr->sh_type == SHT_MIPS_REGINFO) | |
7564 | { | |
7565 | Elf32_External_RegInfo ext; | |
7566 | Elf32_RegInfo s; | |
7567 | ||
9719ad41 RS |
7568 | if (! bfd_get_section_contents (abfd, hdr->bfd_section, |
7569 | &ext, 0, sizeof ext)) | |
0a1b45a2 | 7570 | return false; |
b49e97c9 TS |
7571 | bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); |
7572 | elf_gp (abfd) = s.ri_gp_value; | |
7573 | } | |
7574 | ||
7575 | /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and | |
7576 | set the gp value based on what we find. We may see both | |
7577 | SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, | |
7578 | they should agree. */ | |
7579 | if (hdr->sh_type == SHT_MIPS_OPTIONS) | |
7580 | { | |
7581 | bfd_byte *contents, *l, *lend; | |
7582 | ||
d0e5049d | 7583 | if (!bfd_malloc_and_get_section (abfd, hdr->bfd_section, &contents)) |
b49e97c9 TS |
7584 | { |
7585 | free (contents); | |
0a1b45a2 | 7586 | return false; |
b49e97c9 TS |
7587 | } |
7588 | l = contents; | |
7589 | lend = contents + hdr->sh_size; | |
7590 | while (l + sizeof (Elf_External_Options) <= lend) | |
7591 | { | |
7592 | Elf_Internal_Options intopt; | |
7593 | ||
7594 | bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, | |
7595 | &intopt); | |
1bc8074d MR |
7596 | if (intopt.size < sizeof (Elf_External_Options)) |
7597 | { | |
3dc8d5ea | 7598 | bad_opt: |
4eca0228 | 7599 | _bfd_error_handler |
695344c0 | 7600 | /* xgettext:c-format */ |
3dc8d5ea AM |
7601 | (_("%pB: warning: truncated `%s' option"), |
7602 | abfd, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)); | |
1bc8074d MR |
7603 | break; |
7604 | } | |
3dc8d5ea | 7605 | if (intopt.kind == ODK_REGINFO) |
b49e97c9 | 7606 | { |
3dc8d5ea AM |
7607 | if (ABI_64_P (abfd)) |
7608 | { | |
7609 | Elf64_Internal_RegInfo intreg; | |
7610 | size_t needed = (sizeof (Elf_External_Options) | |
7611 | + sizeof (Elf64_External_RegInfo)); | |
7612 | if (intopt.size < needed || (size_t) (lend - l) < needed) | |
7613 | goto bad_opt; | |
7614 | bfd_mips_elf64_swap_reginfo_in | |
7615 | (abfd, | |
7616 | ((Elf64_External_RegInfo *) | |
7617 | (l + sizeof (Elf_External_Options))), | |
7618 | &intreg); | |
7619 | elf_gp (abfd) = intreg.ri_gp_value; | |
7620 | } | |
7621 | else | |
7622 | { | |
7623 | Elf32_RegInfo intreg; | |
7624 | size_t needed = (sizeof (Elf_External_Options) | |
7625 | + sizeof (Elf32_External_RegInfo)); | |
7626 | if (intopt.size < needed || (size_t) (lend - l) < needed) | |
7627 | goto bad_opt; | |
7628 | bfd_mips_elf32_swap_reginfo_in | |
7629 | (abfd, | |
7630 | ((Elf32_External_RegInfo *) | |
7631 | (l + sizeof (Elf_External_Options))), | |
7632 | &intreg); | |
7633 | elf_gp (abfd) = intreg.ri_gp_value; | |
7634 | } | |
b49e97c9 TS |
7635 | } |
7636 | l += intopt.size; | |
7637 | } | |
7638 | free (contents); | |
7639 | } | |
7640 | ||
0a1b45a2 | 7641 | return true; |
b49e97c9 TS |
7642 | } |
7643 | ||
7644 | /* Set the correct type for a MIPS ELF section. We do this by the | |
7645 | section name, which is a hack, but ought to work. This routine is | |
7646 | used by both the 32-bit and the 64-bit ABI. */ | |
7647 | ||
0a1b45a2 | 7648 | bool |
9719ad41 | 7649 | _bfd_mips_elf_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) |
b49e97c9 | 7650 | { |
fd361982 | 7651 | const char *name = bfd_section_name (sec); |
b49e97c9 TS |
7652 | |
7653 | if (strcmp (name, ".liblist") == 0) | |
7654 | { | |
7655 | hdr->sh_type = SHT_MIPS_LIBLIST; | |
eea6121a | 7656 | hdr->sh_info = sec->size / sizeof (Elf32_Lib); |
b49e97c9 TS |
7657 | /* The sh_link field is set in final_write_processing. */ |
7658 | } | |
7659 | else if (strcmp (name, ".conflict") == 0) | |
7660 | hdr->sh_type = SHT_MIPS_CONFLICT; | |
08dedd66 | 7661 | else if (startswith (name, ".gptab.")) |
b49e97c9 TS |
7662 | { |
7663 | hdr->sh_type = SHT_MIPS_GPTAB; | |
7664 | hdr->sh_entsize = sizeof (Elf32_External_gptab); | |
7665 | /* The sh_info field is set in final_write_processing. */ | |
7666 | } | |
7667 | else if (strcmp (name, ".ucode") == 0) | |
7668 | hdr->sh_type = SHT_MIPS_UCODE; | |
7669 | else if (strcmp (name, ".mdebug") == 0) | |
7670 | { | |
7671 | hdr->sh_type = SHT_MIPS_DEBUG; | |
8dc1a139 | 7672 | /* In a shared object on IRIX 5.3, the .mdebug section has an |
07d6d2b8 | 7673 | entsize of 0. FIXME: Does this matter? */ |
b49e97c9 TS |
7674 | if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) |
7675 | hdr->sh_entsize = 0; | |
7676 | else | |
7677 | hdr->sh_entsize = 1; | |
7678 | } | |
7679 | else if (strcmp (name, ".reginfo") == 0) | |
7680 | { | |
7681 | hdr->sh_type = SHT_MIPS_REGINFO; | |
8dc1a139 | 7682 | /* In a shared object on IRIX 5.3, the .reginfo section has an |
07d6d2b8 | 7683 | entsize of 0x18. FIXME: Does this matter? */ |
b49e97c9 TS |
7684 | if (SGI_COMPAT (abfd)) |
7685 | { | |
7686 | if ((abfd->flags & DYNAMIC) != 0) | |
7687 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
7688 | else | |
7689 | hdr->sh_entsize = 1; | |
7690 | } | |
7691 | else | |
7692 | hdr->sh_entsize = sizeof (Elf32_External_RegInfo); | |
7693 | } | |
7694 | else if (SGI_COMPAT (abfd) | |
7695 | && (strcmp (name, ".hash") == 0 | |
7696 | || strcmp (name, ".dynamic") == 0 | |
7697 | || strcmp (name, ".dynstr") == 0)) | |
7698 | { | |
7699 | if (SGI_COMPAT (abfd)) | |
7700 | hdr->sh_entsize = 0; | |
7701 | #if 0 | |
8dc1a139 | 7702 | /* This isn't how the IRIX6 linker behaves. */ |
b49e97c9 TS |
7703 | hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; |
7704 | #endif | |
7705 | } | |
7706 | else if (strcmp (name, ".got") == 0 | |
7707 | || strcmp (name, ".srdata") == 0 | |
7708 | || strcmp (name, ".sdata") == 0 | |
7709 | || strcmp (name, ".sbss") == 0 | |
7710 | || strcmp (name, ".lit4") == 0 | |
7711 | || strcmp (name, ".lit8") == 0) | |
7712 | hdr->sh_flags |= SHF_MIPS_GPREL; | |
7713 | else if (strcmp (name, ".MIPS.interfaces") == 0) | |
7714 | { | |
7715 | hdr->sh_type = SHT_MIPS_IFACE; | |
7716 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7717 | } | |
08dedd66 | 7718 | else if (startswith (name, ".MIPS.content")) |
b49e97c9 TS |
7719 | { |
7720 | hdr->sh_type = SHT_MIPS_CONTENT; | |
7721 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7722 | /* The sh_info field is set in final_write_processing. */ | |
7723 | } | |
cc2e31b9 | 7724 | else if (MIPS_ELF_OPTIONS_SECTION_NAME_P (name)) |
b49e97c9 TS |
7725 | { |
7726 | hdr->sh_type = SHT_MIPS_OPTIONS; | |
7727 | hdr->sh_entsize = 1; | |
7728 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7729 | } | |
08dedd66 | 7730 | else if (startswith (name, ".MIPS.abiflags")) |
351cdf24 MF |
7731 | { |
7732 | hdr->sh_type = SHT_MIPS_ABIFLAGS; | |
7733 | hdr->sh_entsize = sizeof (Elf_External_ABIFlags_v0); | |
7734 | } | |
08dedd66 | 7735 | else if (startswith (name, ".debug_") |
9a39f738 YS |
7736 | || startswith (name, ".gnu.debuglto_.debug_") |
7737 | || startswith (name, ".zdebug_") | |
7738 | || startswith (name, ".gnu.debuglto_.zdebug_")) | |
b5482f21 NC |
7739 | { |
7740 | hdr->sh_type = SHT_MIPS_DWARF; | |
7741 | ||
7742 | /* Irix facilities such as libexc expect a single .debug_frame | |
7743 | per executable, the system ones have NOSTRIP set and the linker | |
7744 | doesn't merge sections with different flags so ... */ | |
08dedd66 | 7745 | if (SGI_COMPAT (abfd) && startswith (name, ".debug_frame")) |
b5482f21 NC |
7746 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; |
7747 | } | |
b49e97c9 TS |
7748 | else if (strcmp (name, ".MIPS.symlib") == 0) |
7749 | { | |
7750 | hdr->sh_type = SHT_MIPS_SYMBOL_LIB; | |
7751 | /* The sh_link and sh_info fields are set in | |
07d6d2b8 | 7752 | final_write_processing. */ |
b49e97c9 | 7753 | } |
08dedd66 ML |
7754 | else if (startswith (name, ".MIPS.events") |
7755 | || startswith (name, ".MIPS.post_rel")) | |
b49e97c9 TS |
7756 | { |
7757 | hdr->sh_type = SHT_MIPS_EVENTS; | |
7758 | hdr->sh_flags |= SHF_MIPS_NOSTRIP; | |
7759 | /* The sh_link field is set in final_write_processing. */ | |
7760 | } | |
7761 | else if (strcmp (name, ".msym") == 0) | |
7762 | { | |
7763 | hdr->sh_type = SHT_MIPS_MSYM; | |
7764 | hdr->sh_flags |= SHF_ALLOC; | |
7765 | hdr->sh_entsize = 8; | |
7766 | } | |
f16a9783 MS |
7767 | else if (strcmp (name, ".MIPS.xhash") == 0) |
7768 | { | |
7769 | hdr->sh_type = SHT_MIPS_XHASH; | |
7770 | hdr->sh_flags |= SHF_ALLOC; | |
7771 | hdr->sh_entsize = get_elf_backend_data(abfd)->s->arch_size == 64 ? 0 : 4; | |
7772 | } | |
b49e97c9 | 7773 | |
7a79a000 TS |
7774 | /* The generic elf_fake_sections will set up REL_HDR using the default |
7775 | kind of relocations. We used to set up a second header for the | |
7776 | non-default kind of relocations here, but only NewABI would use | |
7777 | these, and the IRIX ld doesn't like resulting empty RELA sections. | |
7778 | Thus we create those header only on demand now. */ | |
b49e97c9 | 7779 | |
0a1b45a2 | 7780 | return true; |
b49e97c9 TS |
7781 | } |
7782 | ||
7783 | /* Given a BFD section, try to locate the corresponding ELF section | |
7784 | index. This is used by both the 32-bit and the 64-bit ABI. | |
7785 | Actually, it's not clear to me that the 64-bit ABI supports these, | |
7786 | but for non-PIC objects we will certainly want support for at least | |
7787 | the .scommon section. */ | |
7788 | ||
0a1b45a2 | 7789 | bool |
9719ad41 RS |
7790 | _bfd_mips_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
7791 | asection *sec, int *retval) | |
b49e97c9 | 7792 | { |
fd361982 | 7793 | if (strcmp (bfd_section_name (sec), ".scommon") == 0) |
b49e97c9 TS |
7794 | { |
7795 | *retval = SHN_MIPS_SCOMMON; | |
0a1b45a2 | 7796 | return true; |
b49e97c9 | 7797 | } |
fd361982 | 7798 | if (strcmp (bfd_section_name (sec), ".acommon") == 0) |
b49e97c9 TS |
7799 | { |
7800 | *retval = SHN_MIPS_ACOMMON; | |
0a1b45a2 | 7801 | return true; |
b49e97c9 | 7802 | } |
0a1b45a2 | 7803 | return false; |
b49e97c9 TS |
7804 | } |
7805 | \f | |
7806 | /* Hook called by the linker routine which adds symbols from an object | |
7807 | file. We must handle the special MIPS section numbers here. */ | |
7808 | ||
0a1b45a2 | 7809 | bool |
9719ad41 | 7810 | _bfd_mips_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, |
555cd476 | 7811 | Elf_Internal_Sym *sym, const char **namep, |
9719ad41 RS |
7812 | flagword *flagsp ATTRIBUTE_UNUSED, |
7813 | asection **secp, bfd_vma *valp) | |
b49e97c9 TS |
7814 | { |
7815 | if (SGI_COMPAT (abfd) | |
7816 | && (abfd->flags & DYNAMIC) != 0 | |
7817 | && strcmp (*namep, "_rld_new_interface") == 0) | |
7818 | { | |
8dc1a139 | 7819 | /* Skip IRIX5 rld entry name. */ |
b49e97c9 | 7820 | *namep = NULL; |
0a1b45a2 | 7821 | return true; |
b49e97c9 TS |
7822 | } |
7823 | ||
eedecc07 DD |
7824 | /* Shared objects may have a dynamic symbol '_gp_disp' defined as |
7825 | a SECTION *ABS*. This causes ld to think it can resolve _gp_disp | |
7826 | by setting a DT_NEEDED for the shared object. Since _gp_disp is | |
7827 | a magic symbol resolved by the linker, we ignore this bogus definition | |
7828 | of _gp_disp. New ABI objects do not suffer from this problem so this | |
7829 | is not done for them. */ | |
7830 | if (!NEWABI_P(abfd) | |
7831 | && (sym->st_shndx == SHN_ABS) | |
7832 | && (strcmp (*namep, "_gp_disp") == 0)) | |
7833 | { | |
7834 | *namep = NULL; | |
0a1b45a2 | 7835 | return true; |
eedecc07 DD |
7836 | } |
7837 | ||
b49e97c9 TS |
7838 | switch (sym->st_shndx) |
7839 | { | |
7840 | case SHN_COMMON: | |
7841 | /* Common symbols less than the GP size are automatically | |
7842 | treated as SHN_MIPS_SCOMMON symbols. */ | |
7843 | if (sym->st_size > elf_gp_size (abfd) | |
b59eed79 | 7844 | || ELF_ST_TYPE (sym->st_info) == STT_TLS |
b49e97c9 TS |
7845 | || IRIX_COMPAT (abfd) == ict_irix6) |
7846 | break; | |
7847 | /* Fall through. */ | |
7848 | case SHN_MIPS_SCOMMON: | |
7849 | *secp = bfd_make_section_old_way (abfd, ".scommon"); | |
10885e24 | 7850 | (*secp)->flags |= SEC_IS_COMMON | SEC_SMALL_DATA; |
b49e97c9 TS |
7851 | *valp = sym->st_size; |
7852 | break; | |
7853 | ||
7854 | case SHN_MIPS_TEXT: | |
7855 | /* This section is used in a shared object. */ | |
698600e4 | 7856 | if (mips_elf_tdata (abfd)->elf_text_section == NULL) |
b49e97c9 TS |
7857 | { |
7858 | asymbol *elf_text_symbol; | |
7859 | asection *elf_text_section; | |
986f0783 | 7860 | size_t amt = sizeof (asection); |
b49e97c9 TS |
7861 | |
7862 | elf_text_section = bfd_zalloc (abfd, amt); | |
7863 | if (elf_text_section == NULL) | |
0a1b45a2 | 7864 | return false; |
b49e97c9 TS |
7865 | |
7866 | amt = sizeof (asymbol); | |
7867 | elf_text_symbol = bfd_zalloc (abfd, amt); | |
7868 | if (elf_text_symbol == NULL) | |
0a1b45a2 | 7869 | return false; |
b49e97c9 TS |
7870 | |
7871 | /* Initialize the section. */ | |
7872 | ||
698600e4 AM |
7873 | mips_elf_tdata (abfd)->elf_text_section = elf_text_section; |
7874 | mips_elf_tdata (abfd)->elf_text_symbol = elf_text_symbol; | |
b49e97c9 TS |
7875 | |
7876 | elf_text_section->symbol = elf_text_symbol; | |
698600e4 | 7877 | elf_text_section->symbol_ptr_ptr = &mips_elf_tdata (abfd)->elf_text_symbol; |
b49e97c9 TS |
7878 | |
7879 | elf_text_section->name = ".text"; | |
7880 | elf_text_section->flags = SEC_NO_FLAGS; | |
7881 | elf_text_section->output_section = NULL; | |
7882 | elf_text_section->owner = abfd; | |
7883 | elf_text_symbol->name = ".text"; | |
7884 | elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7885 | elf_text_symbol->section = elf_text_section; | |
7886 | } | |
7887 | /* This code used to do *secp = bfd_und_section_ptr if | |
07d6d2b8 AM |
7888 | bfd_link_pic (info). I don't know why, and that doesn't make sense, |
7889 | so I took it out. */ | |
698600e4 | 7890 | *secp = mips_elf_tdata (abfd)->elf_text_section; |
b49e97c9 TS |
7891 | break; |
7892 | ||
7893 | case SHN_MIPS_ACOMMON: | |
7894 | /* Fall through. XXX Can we treat this as allocated data? */ | |
7895 | case SHN_MIPS_DATA: | |
7896 | /* This section is used in a shared object. */ | |
698600e4 | 7897 | if (mips_elf_tdata (abfd)->elf_data_section == NULL) |
b49e97c9 TS |
7898 | { |
7899 | asymbol *elf_data_symbol; | |
7900 | asection *elf_data_section; | |
986f0783 | 7901 | size_t amt = sizeof (asection); |
b49e97c9 TS |
7902 | |
7903 | elf_data_section = bfd_zalloc (abfd, amt); | |
7904 | if (elf_data_section == NULL) | |
0a1b45a2 | 7905 | return false; |
b49e97c9 TS |
7906 | |
7907 | amt = sizeof (asymbol); | |
7908 | elf_data_symbol = bfd_zalloc (abfd, amt); | |
7909 | if (elf_data_symbol == NULL) | |
0a1b45a2 | 7910 | return false; |
b49e97c9 TS |
7911 | |
7912 | /* Initialize the section. */ | |
7913 | ||
698600e4 AM |
7914 | mips_elf_tdata (abfd)->elf_data_section = elf_data_section; |
7915 | mips_elf_tdata (abfd)->elf_data_symbol = elf_data_symbol; | |
b49e97c9 TS |
7916 | |
7917 | elf_data_section->symbol = elf_data_symbol; | |
698600e4 | 7918 | elf_data_section->symbol_ptr_ptr = &mips_elf_tdata (abfd)->elf_data_symbol; |
b49e97c9 TS |
7919 | |
7920 | elf_data_section->name = ".data"; | |
7921 | elf_data_section->flags = SEC_NO_FLAGS; | |
7922 | elf_data_section->output_section = NULL; | |
7923 | elf_data_section->owner = abfd; | |
7924 | elf_data_symbol->name = ".data"; | |
7925 | elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC; | |
7926 | elf_data_symbol->section = elf_data_section; | |
7927 | } | |
7928 | /* This code used to do *secp = bfd_und_section_ptr if | |
07d6d2b8 AM |
7929 | bfd_link_pic (info). I don't know why, and that doesn't make sense, |
7930 | so I took it out. */ | |
698600e4 | 7931 | *secp = mips_elf_tdata (abfd)->elf_data_section; |
b49e97c9 TS |
7932 | break; |
7933 | ||
7934 | case SHN_MIPS_SUNDEFINED: | |
7935 | *secp = bfd_und_section_ptr; | |
7936 | break; | |
7937 | } | |
7938 | ||
7939 | if (SGI_COMPAT (abfd) | |
0e1862bb | 7940 | && ! bfd_link_pic (info) |
f13a99db | 7941 | && info->output_bfd->xvec == abfd->xvec |
b49e97c9 TS |
7942 | && strcmp (*namep, "__rld_obj_head") == 0) |
7943 | { | |
7944 | struct elf_link_hash_entry *h; | |
14a793b2 | 7945 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
7946 | |
7947 | /* Mark __rld_obj_head as dynamic. */ | |
14a793b2 | 7948 | bh = NULL; |
b49e97c9 | 7949 | if (! (_bfd_generic_link_add_one_symbol |
0a1b45a2 | 7950 | (info, abfd, *namep, BSF_GLOBAL, *secp, *valp, NULL, false, |
14a793b2 | 7951 | get_elf_backend_data (abfd)->collect, &bh))) |
0a1b45a2 | 7952 | return false; |
14a793b2 AM |
7953 | |
7954 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
7955 | h->non_elf = 0; |
7956 | h->def_regular = 1; | |
b49e97c9 TS |
7957 | h->type = STT_OBJECT; |
7958 | ||
c152c796 | 7959 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
0a1b45a2 | 7960 | return false; |
b49e97c9 | 7961 | |
0a1b45a2 | 7962 | mips_elf_hash_table (info)->use_rld_obj_head = true; |
b4082c70 | 7963 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
7964 | } |
7965 | ||
7966 | /* If this is a mips16 text symbol, add 1 to the value to make it | |
7967 | odd. This will cause something like .word SYM to come up with | |
7968 | the right value when it is loaded into the PC. */ | |
df58fc94 | 7969 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
b49e97c9 TS |
7970 | ++*valp; |
7971 | ||
0a1b45a2 | 7972 | return true; |
b49e97c9 TS |
7973 | } |
7974 | ||
7975 | /* This hook function is called before the linker writes out a global | |
7976 | symbol. We mark symbols as small common if appropriate. This is | |
7977 | also where we undo the increment of the value for a mips16 symbol. */ | |
7978 | ||
6e0b88f1 | 7979 | int |
9719ad41 RS |
7980 | _bfd_mips_elf_link_output_symbol_hook |
7981 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
7982 | const char *name ATTRIBUTE_UNUSED, Elf_Internal_Sym *sym, | |
7983 | asection *input_sec, struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
7984 | { |
7985 | /* If we see a common symbol, which implies a relocatable link, then | |
7986 | if a symbol was small common in an input file, mark it as small | |
7987 | common in the output file. */ | |
7988 | if (sym->st_shndx == SHN_COMMON | |
7989 | && strcmp (input_sec->name, ".scommon") == 0) | |
7990 | sym->st_shndx = SHN_MIPS_SCOMMON; | |
7991 | ||
df58fc94 | 7992 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) |
79cda7cf | 7993 | sym->st_value &= ~1; |
b49e97c9 | 7994 | |
6e0b88f1 | 7995 | return 1; |
b49e97c9 TS |
7996 | } |
7997 | \f | |
7998 | /* Functions for the dynamic linker. */ | |
7999 | ||
8000 | /* Create dynamic sections when linking against a dynamic object. */ | |
8001 | ||
0a1b45a2 | 8002 | bool |
9719ad41 | 8003 | _bfd_mips_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 TS |
8004 | { |
8005 | struct elf_link_hash_entry *h; | |
14a793b2 | 8006 | struct bfd_link_hash_entry *bh; |
b49e97c9 TS |
8007 | flagword flags; |
8008 | register asection *s; | |
8009 | const char * const *namep; | |
0a44bf69 | 8010 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 8011 | |
0a44bf69 | 8012 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
8013 | BFD_ASSERT (htab != NULL); |
8014 | ||
b49e97c9 TS |
8015 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
8016 | | SEC_LINKER_CREATED | SEC_READONLY); | |
8017 | ||
0a44bf69 RS |
8018 | /* The psABI requires a read-only .dynamic section, but the VxWorks |
8019 | EABI doesn't. */ | |
90c14f0c | 8020 | if (htab->root.target_os != is_vxworks) |
b49e97c9 | 8021 | { |
3d4d4302 | 8022 | s = bfd_get_linker_section (abfd, ".dynamic"); |
0a44bf69 RS |
8023 | if (s != NULL) |
8024 | { | |
fd361982 | 8025 | if (!bfd_set_section_flags (s, flags)) |
0a1b45a2 | 8026 | return false; |
0a44bf69 | 8027 | } |
b49e97c9 TS |
8028 | } |
8029 | ||
8030 | /* We need to create .got section. */ | |
23cc69b6 | 8031 | if (!mips_elf_create_got_section (abfd, info)) |
0a1b45a2 | 8032 | return false; |
f4416af6 | 8033 | |
0a1b45a2 AM |
8034 | if (! mips_elf_rel_dyn_section (info, true)) |
8035 | return false; | |
b49e97c9 | 8036 | |
b49e97c9 | 8037 | /* Create .stub section. */ |
3d4d4302 AM |
8038 | s = bfd_make_section_anyway_with_flags (abfd, |
8039 | MIPS_ELF_STUB_SECTION_NAME (abfd), | |
8040 | flags | SEC_CODE); | |
4e41d0d7 | 8041 | if (s == NULL |
fd361982 | 8042 | || !bfd_set_section_alignment (s, MIPS_ELF_LOG_FILE_ALIGN (abfd))) |
0a1b45a2 | 8043 | return false; |
4e41d0d7 | 8044 | htab->sstubs = s; |
b49e97c9 | 8045 | |
e6aea42d | 8046 | if (!mips_elf_hash_table (info)->use_rld_obj_head |
0e1862bb | 8047 | && bfd_link_executable (info) |
3d4d4302 | 8048 | && bfd_get_linker_section (abfd, ".rld_map") == NULL) |
b49e97c9 | 8049 | { |
3d4d4302 AM |
8050 | s = bfd_make_section_anyway_with_flags (abfd, ".rld_map", |
8051 | flags &~ (flagword) SEC_READONLY); | |
b49e97c9 | 8052 | if (s == NULL |
fd361982 | 8053 | || !bfd_set_section_alignment (s, MIPS_ELF_LOG_FILE_ALIGN (abfd))) |
0a1b45a2 | 8054 | return false; |
b49e97c9 TS |
8055 | } |
8056 | ||
f16a9783 MS |
8057 | /* Create .MIPS.xhash section. */ |
8058 | if (info->emit_gnu_hash) | |
8059 | s = bfd_make_section_anyway_with_flags (abfd, ".MIPS.xhash", | |
8060 | flags | SEC_READONLY); | |
8061 | ||
b49e97c9 TS |
8062 | /* On IRIX5, we adjust add some additional symbols and change the |
8063 | alignments of several sections. There is no ABI documentation | |
8064 | indicating that this is necessary on IRIX6, nor any evidence that | |
8065 | the linker takes such action. */ | |
8066 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
8067 | { | |
8068 | for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) | |
8069 | { | |
14a793b2 | 8070 | bh = NULL; |
b49e97c9 | 8071 | if (! (_bfd_generic_link_add_one_symbol |
9719ad41 | 8072 | (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, 0, |
0a1b45a2 AM |
8073 | NULL, false, get_elf_backend_data (abfd)->collect, &bh))) |
8074 | return false; | |
14a793b2 AM |
8075 | |
8076 | h = (struct elf_link_hash_entry *) bh; | |
12f09816 | 8077 | h->mark = 1; |
f5385ebf AM |
8078 | h->non_elf = 0; |
8079 | h->def_regular = 1; | |
b49e97c9 TS |
8080 | h->type = STT_SECTION; |
8081 | ||
c152c796 | 8082 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
0a1b45a2 | 8083 | return false; |
b49e97c9 TS |
8084 | } |
8085 | ||
8086 | /* We need to create a .compact_rel section. */ | |
8087 | if (SGI_COMPAT (abfd)) | |
8088 | { | |
8089 | if (!mips_elf_create_compact_rel_section (abfd, info)) | |
0a1b45a2 | 8090 | return false; |
b49e97c9 TS |
8091 | } |
8092 | ||
44c410de | 8093 | /* Change alignments of some sections. */ |
3d4d4302 | 8094 | s = bfd_get_linker_section (abfd, ".hash"); |
b49e97c9 | 8095 | if (s != NULL) |
fd361982 | 8096 | bfd_set_section_alignment (s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
a253d456 | 8097 | |
3d4d4302 | 8098 | s = bfd_get_linker_section (abfd, ".dynsym"); |
b49e97c9 | 8099 | if (s != NULL) |
fd361982 | 8100 | bfd_set_section_alignment (s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
a253d456 | 8101 | |
3d4d4302 | 8102 | s = bfd_get_linker_section (abfd, ".dynstr"); |
b49e97c9 | 8103 | if (s != NULL) |
fd361982 | 8104 | bfd_set_section_alignment (s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
a253d456 | 8105 | |
3d4d4302 | 8106 | /* ??? */ |
b49e97c9 TS |
8107 | s = bfd_get_section_by_name (abfd, ".reginfo"); |
8108 | if (s != NULL) | |
fd361982 | 8109 | bfd_set_section_alignment (s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
a253d456 | 8110 | |
3d4d4302 | 8111 | s = bfd_get_linker_section (abfd, ".dynamic"); |
b49e97c9 | 8112 | if (s != NULL) |
fd361982 | 8113 | bfd_set_section_alignment (s, MIPS_ELF_LOG_FILE_ALIGN (abfd)); |
b49e97c9 TS |
8114 | } |
8115 | ||
0e1862bb | 8116 | if (bfd_link_executable (info)) |
b49e97c9 | 8117 | { |
14a793b2 AM |
8118 | const char *name; |
8119 | ||
8120 | name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING"; | |
8121 | bh = NULL; | |
8122 | if (!(_bfd_generic_link_add_one_symbol | |
9719ad41 | 8123 | (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0, |
0a1b45a2 AM |
8124 | NULL, false, get_elf_backend_data (abfd)->collect, &bh))) |
8125 | return false; | |
14a793b2 AM |
8126 | |
8127 | h = (struct elf_link_hash_entry *) bh; | |
f5385ebf AM |
8128 | h->non_elf = 0; |
8129 | h->def_regular = 1; | |
b49e97c9 TS |
8130 | h->type = STT_SECTION; |
8131 | ||
c152c796 | 8132 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
0a1b45a2 | 8133 | return false; |
b49e97c9 TS |
8134 | |
8135 | if (! mips_elf_hash_table (info)->use_rld_obj_head) | |
8136 | { | |
8137 | /* __rld_map is a four byte word located in the .data section | |
8138 | and is filled in by the rtld to contain a pointer to | |
8139 | the _r_debug structure. Its symbol value will be set in | |
8140 | _bfd_mips_elf_finish_dynamic_symbol. */ | |
3d4d4302 | 8141 | s = bfd_get_linker_section (abfd, ".rld_map"); |
0abfb97a | 8142 | BFD_ASSERT (s != NULL); |
14a793b2 | 8143 | |
0abfb97a L |
8144 | name = SGI_COMPAT (abfd) ? "__rld_map" : "__RLD_MAP"; |
8145 | bh = NULL; | |
8146 | if (!(_bfd_generic_link_add_one_symbol | |
0a1b45a2 | 8147 | (info, abfd, name, BSF_GLOBAL, s, 0, NULL, false, |
0abfb97a | 8148 | get_elf_backend_data (abfd)->collect, &bh))) |
0a1b45a2 | 8149 | return false; |
b49e97c9 | 8150 | |
0abfb97a L |
8151 | h = (struct elf_link_hash_entry *) bh; |
8152 | h->non_elf = 0; | |
8153 | h->def_regular = 1; | |
8154 | h->type = STT_OBJECT; | |
8155 | ||
8156 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 8157 | return false; |
b4082c70 | 8158 | mips_elf_hash_table (info)->rld_symbol = h; |
b49e97c9 TS |
8159 | } |
8160 | } | |
8161 | ||
861fb55a | 8162 | /* Create the .plt, .rel(a).plt, .dynbss and .rel(a).bss sections. |
c164a95d | 8163 | Also, on VxWorks, create the _PROCEDURE_LINKAGE_TABLE_ symbol. */ |
861fb55a | 8164 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
0a1b45a2 | 8165 | return false; |
861fb55a | 8166 | |
1bbce132 | 8167 | /* Do the usual VxWorks handling. */ |
90c14f0c | 8168 | if (htab->root.target_os == is_vxworks |
1bbce132 | 8169 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) |
0a1b45a2 | 8170 | return false; |
0a44bf69 | 8171 | |
0a1b45a2 | 8172 | return true; |
b49e97c9 TS |
8173 | } |
8174 | \f | |
c224138d RS |
8175 | /* Return true if relocation REL against section SEC is a REL rather than |
8176 | RELA relocation. RELOCS is the first relocation in the section and | |
8177 | ABFD is the bfd that contains SEC. */ | |
8178 | ||
0a1b45a2 | 8179 | static bool |
c224138d RS |
8180 | mips_elf_rel_relocation_p (bfd *abfd, asection *sec, |
8181 | const Elf_Internal_Rela *relocs, | |
8182 | const Elf_Internal_Rela *rel) | |
8183 | { | |
8184 | Elf_Internal_Shdr *rel_hdr; | |
8185 | const struct elf_backend_data *bed; | |
8186 | ||
d4730f92 BS |
8187 | /* To determine which flavor of relocation this is, we depend on the |
8188 | fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */ | |
8189 | rel_hdr = elf_section_data (sec)->rel.hdr; | |
8190 | if (rel_hdr == NULL) | |
0a1b45a2 | 8191 | return false; |
c224138d | 8192 | bed = get_elf_backend_data (abfd); |
d4730f92 BS |
8193 | return ((size_t) (rel - relocs) |
8194 | < NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel); | |
c224138d RS |
8195 | } |
8196 | ||
8197 | /* Read the addend for REL relocation REL, which belongs to bfd ABFD. | |
8198 | HOWTO is the relocation's howto and CONTENTS points to the contents | |
8199 | of the section that REL is against. */ | |
8200 | ||
8201 | static bfd_vma | |
73425813 AM |
8202 | mips_elf_read_rel_addend (bfd *abfd, asection *sec, |
8203 | const Elf_Internal_Rela *rel, | |
c224138d RS |
8204 | reloc_howto_type *howto, bfd_byte *contents) |
8205 | { | |
8206 | bfd_byte *location; | |
8207 | unsigned int r_type; | |
8208 | bfd_vma addend; | |
17c6c9d9 | 8209 | bfd_vma bytes; |
c224138d | 8210 | |
73425813 AM |
8211 | if (!bfd_reloc_offset_in_range (howto, abfd, sec, rel->r_offset)) |
8212 | return 0; | |
8213 | ||
c224138d RS |
8214 | r_type = ELF_R_TYPE (abfd, rel->r_info); |
8215 | location = contents + rel->r_offset; | |
8216 | ||
8217 | /* Get the addend, which is stored in the input file. */ | |
0a1b45a2 | 8218 | _bfd_mips_elf_reloc_unshuffle (abfd, r_type, false, location); |
17c6c9d9 | 8219 | bytes = mips_elf_obtain_contents (howto, rel, abfd, contents); |
0a1b45a2 | 8220 | _bfd_mips_elf_reloc_shuffle (abfd, r_type, false, location); |
c224138d | 8221 | |
17c6c9d9 MR |
8222 | addend = bytes & howto->src_mask; |
8223 | ||
8224 | /* Shift is 2, unusually, for microMIPS JALX. Adjust the addend | |
8225 | accordingly. */ | |
8226 | if (r_type == R_MICROMIPS_26_S1 && (bytes >> 26) == 0x3c) | |
8227 | addend <<= 1; | |
8228 | ||
8229 | return addend; | |
c224138d RS |
8230 | } |
8231 | ||
8232 | /* REL is a relocation in ABFD that needs a partnering LO16 relocation | |
8233 | and *ADDEND is the addend for REL itself. Look for the LO16 relocation | |
8234 | and update *ADDEND with the final addend. Return true on success | |
8235 | or false if the LO16 could not be found. RELEND is the exclusive | |
8236 | upper bound on the relocations for REL's section. */ | |
8237 | ||
0a1b45a2 | 8238 | static bool |
c224138d | 8239 | mips_elf_add_lo16_rel_addend (bfd *abfd, |
73425813 | 8240 | asection *sec, |
c224138d RS |
8241 | const Elf_Internal_Rela *rel, |
8242 | const Elf_Internal_Rela *relend, | |
8243 | bfd_byte *contents, bfd_vma *addend) | |
8244 | { | |
8245 | unsigned int r_type, lo16_type; | |
8246 | const Elf_Internal_Rela *lo16_relocation; | |
8247 | reloc_howto_type *lo16_howto; | |
8248 | bfd_vma l; | |
8249 | ||
8250 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
738e5348 | 8251 | if (mips16_reloc_p (r_type)) |
c224138d | 8252 | lo16_type = R_MIPS16_LO16; |
df58fc94 RS |
8253 | else if (micromips_reloc_p (r_type)) |
8254 | lo16_type = R_MICROMIPS_LO16; | |
7361da2c AB |
8255 | else if (r_type == R_MIPS_PCHI16) |
8256 | lo16_type = R_MIPS_PCLO16; | |
c224138d RS |
8257 | else |
8258 | lo16_type = R_MIPS_LO16; | |
8259 | ||
8260 | /* The combined value is the sum of the HI16 addend, left-shifted by | |
8261 | sixteen bits, and the LO16 addend, sign extended. (Usually, the | |
8262 | code does a `lui' of the HI16 value, and then an `addiu' of the | |
8263 | LO16 value.) | |
8264 | ||
8265 | Scan ahead to find a matching LO16 relocation. | |
8266 | ||
8267 | According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must | |
8268 | be immediately following. However, for the IRIX6 ABI, the next | |
8269 | relocation may be a composed relocation consisting of several | |
8270 | relocations for the same address. In that case, the R_MIPS_LO16 | |
8271 | relocation may occur as one of these. We permit a similar | |
8272 | extension in general, as that is useful for GCC. | |
8273 | ||
8274 | In some cases GCC dead code elimination removes the LO16 but keeps | |
8275 | the corresponding HI16. This is strictly speaking a violation of | |
8276 | the ABI but not immediately harmful. */ | |
8277 | lo16_relocation = mips_elf_next_relocation (abfd, lo16_type, rel, relend); | |
8278 | if (lo16_relocation == NULL) | |
0a1b45a2 | 8279 | return false; |
c224138d RS |
8280 | |
8281 | /* Obtain the addend kept there. */ | |
0a1b45a2 | 8282 | lo16_howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, lo16_type, false); |
73425813 AM |
8283 | l = mips_elf_read_rel_addend (abfd, sec, lo16_relocation, lo16_howto, |
8284 | contents); | |
c224138d RS |
8285 | |
8286 | l <<= lo16_howto->rightshift; | |
8287 | l = _bfd_mips_elf_sign_extend (l, 16); | |
8288 | ||
8289 | *addend <<= 16; | |
8290 | *addend += l; | |
0a1b45a2 | 8291 | return true; |
c224138d RS |
8292 | } |
8293 | ||
8294 | /* Try to read the contents of section SEC in bfd ABFD. Return true and | |
8295 | store the contents in *CONTENTS on success. Assume that *CONTENTS | |
8296 | already holds the contents if it is nonull on entry. */ | |
8297 | ||
0a1b45a2 | 8298 | static bool |
c224138d RS |
8299 | mips_elf_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents) |
8300 | { | |
8301 | if (*contents) | |
0a1b45a2 | 8302 | return true; |
c224138d RS |
8303 | |
8304 | /* Get cached copy if it exists. */ | |
8305 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
8306 | { | |
8307 | *contents = elf_section_data (sec)->this_hdr.contents; | |
0a1b45a2 | 8308 | return true; |
c224138d RS |
8309 | } |
8310 | ||
8311 | return bfd_malloc_and_get_section (abfd, sec, contents); | |
8312 | } | |
8313 | ||
1bbce132 MR |
8314 | /* Make a new PLT record to keep internal data. */ |
8315 | ||
8316 | static struct plt_entry * | |
8317 | mips_elf_make_plt_record (bfd *abfd) | |
8318 | { | |
8319 | struct plt_entry *entry; | |
8320 | ||
8321 | entry = bfd_zalloc (abfd, sizeof (*entry)); | |
8322 | if (entry == NULL) | |
8323 | return NULL; | |
8324 | ||
8325 | entry->stub_offset = MINUS_ONE; | |
8326 | entry->mips_offset = MINUS_ONE; | |
8327 | entry->comp_offset = MINUS_ONE; | |
8328 | entry->gotplt_index = MINUS_ONE; | |
8329 | return entry; | |
8330 | } | |
8331 | ||
47275900 MR |
8332 | /* Define the special `__gnu_absolute_zero' symbol. We only need this |
8333 | for PIC code, as otherwise there is no load-time relocation involved | |
8334 | and local GOT entries whose value is zero at static link time will | |
8335 | retain their value at load time. */ | |
8336 | ||
0a1b45a2 | 8337 | static bool |
47275900 MR |
8338 | mips_elf_define_absolute_zero (bfd *abfd, struct bfd_link_info *info, |
8339 | struct mips_elf_link_hash_table *htab, | |
8340 | unsigned int r_type) | |
8341 | { | |
8342 | union | |
8343 | { | |
8344 | struct elf_link_hash_entry *eh; | |
8345 | struct bfd_link_hash_entry *bh; | |
8346 | } | |
8347 | hzero; | |
8348 | ||
8349 | BFD_ASSERT (!htab->use_absolute_zero); | |
8350 | BFD_ASSERT (bfd_link_pic (info)); | |
8351 | ||
8352 | hzero.bh = NULL; | |
8353 | if (!_bfd_generic_link_add_one_symbol (info, abfd, "__gnu_absolute_zero", | |
8354 | BSF_GLOBAL, bfd_abs_section_ptr, 0, | |
0a1b45a2 AM |
8355 | NULL, false, false, &hzero.bh)) |
8356 | return false; | |
47275900 MR |
8357 | |
8358 | BFD_ASSERT (hzero.bh != NULL); | |
8359 | hzero.eh->size = 0; | |
8360 | hzero.eh->type = STT_NOTYPE; | |
8361 | hzero.eh->other = STV_PROTECTED; | |
8362 | hzero.eh->def_regular = 1; | |
8363 | hzero.eh->non_elf = 0; | |
8364 | ||
0a1b45a2 AM |
8365 | if (!mips_elf_record_global_got_symbol (hzero.eh, abfd, info, true, r_type)) |
8366 | return false; | |
47275900 | 8367 | |
0a1b45a2 | 8368 | htab->use_absolute_zero = true; |
47275900 | 8369 | |
0a1b45a2 | 8370 | return true; |
47275900 MR |
8371 | } |
8372 | ||
b49e97c9 | 8373 | /* Look through the relocs for a section during the first phase, and |
1bbce132 MR |
8374 | allocate space in the global offset table and record the need for |
8375 | standard MIPS and compressed procedure linkage table entries. */ | |
b49e97c9 | 8376 | |
0a1b45a2 | 8377 | bool |
9719ad41 RS |
8378 | _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
8379 | asection *sec, const Elf_Internal_Rela *relocs) | |
b49e97c9 TS |
8380 | { |
8381 | const char *name; | |
8382 | bfd *dynobj; | |
8383 | Elf_Internal_Shdr *symtab_hdr; | |
8384 | struct elf_link_hash_entry **sym_hashes; | |
b49e97c9 TS |
8385 | size_t extsymoff; |
8386 | const Elf_Internal_Rela *rel; | |
8387 | const Elf_Internal_Rela *rel_end; | |
b49e97c9 | 8388 | asection *sreloc; |
9c5bfbb7 | 8389 | const struct elf_backend_data *bed; |
0a44bf69 | 8390 | struct mips_elf_link_hash_table *htab; |
c224138d RS |
8391 | bfd_byte *contents; |
8392 | bfd_vma addend; | |
8393 | reloc_howto_type *howto; | |
b49e97c9 | 8394 | |
0e1862bb | 8395 | if (bfd_link_relocatable (info)) |
0a1b45a2 | 8396 | return true; |
b49e97c9 | 8397 | |
0a44bf69 | 8398 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
8399 | BFD_ASSERT (htab != NULL); |
8400 | ||
b49e97c9 TS |
8401 | dynobj = elf_hash_table (info)->dynobj; |
8402 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8403 | sym_hashes = elf_sym_hashes (abfd); | |
8404 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; | |
8405 | ||
738e5348 | 8406 | bed = get_elf_backend_data (abfd); |
056bafd4 | 8407 | rel_end = relocs + sec->reloc_count; |
738e5348 | 8408 | |
b49e97c9 TS |
8409 | /* Check for the mips16 stub sections. */ |
8410 | ||
fd361982 | 8411 | name = bfd_section_name (sec); |
b9d58d71 | 8412 | if (FN_STUB_P (name)) |
b49e97c9 TS |
8413 | { |
8414 | unsigned long r_symndx; | |
8415 | ||
8416 | /* Look at the relocation information to figure out which symbol | |
07d6d2b8 | 8417 | this is for. */ |
b49e97c9 | 8418 | |
cb4437b8 | 8419 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
8420 | if (r_symndx == 0) |
8421 | { | |
4eca0228 | 8422 | _bfd_error_handler |
695344c0 | 8423 | /* xgettext:c-format */ |
2c1c9679 | 8424 | (_("%pB: warning: cannot determine the target function for" |
738e5348 RS |
8425 | " stub section `%s'"), |
8426 | abfd, name); | |
8427 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 8428 | return false; |
738e5348 | 8429 | } |
b49e97c9 TS |
8430 | |
8431 | if (r_symndx < extsymoff | |
8432 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
8433 | { | |
8434 | asection *o; | |
8435 | ||
8436 | /* This stub is for a local symbol. This stub will only be | |
07d6d2b8 AM |
8437 | needed if there is some relocation in this BFD, other |
8438 | than a 16 bit function call, which refers to this symbol. */ | |
b49e97c9 TS |
8439 | for (o = abfd->sections; o != NULL; o = o->next) |
8440 | { | |
8441 | Elf_Internal_Rela *sec_relocs; | |
8442 | const Elf_Internal_Rela *r, *rend; | |
8443 | ||
8444 | /* We can ignore stub sections when looking for relocs. */ | |
8445 | if ((o->flags & SEC_RELOC) == 0 | |
8446 | || o->reloc_count == 0 | |
738e5348 | 8447 | || section_allows_mips16_refs_p (o)) |
b49e97c9 TS |
8448 | continue; |
8449 | ||
45d6a902 | 8450 | sec_relocs |
9719ad41 | 8451 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 8452 | info->keep_memory); |
b49e97c9 | 8453 | if (sec_relocs == NULL) |
0a1b45a2 | 8454 | return false; |
b49e97c9 TS |
8455 | |
8456 | rend = sec_relocs + o->reloc_count; | |
8457 | for (r = sec_relocs; r < rend; r++) | |
8458 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
738e5348 | 8459 | && !mips16_call_reloc_p (ELF_R_TYPE (abfd, r->r_info))) |
b49e97c9 TS |
8460 | break; |
8461 | ||
6cdc0ccc | 8462 | if (elf_section_data (o)->relocs != sec_relocs) |
b49e97c9 TS |
8463 | free (sec_relocs); |
8464 | ||
8465 | if (r < rend) | |
8466 | break; | |
8467 | } | |
8468 | ||
8469 | if (o == NULL) | |
8470 | { | |
8471 | /* There is no non-call reloc for this stub, so we do | |
07d6d2b8 AM |
8472 | not need it. Since this function is called before |
8473 | the linker maps input sections to output sections, we | |
8474 | can easily discard it by setting the SEC_EXCLUDE | |
8475 | flag. */ | |
b49e97c9 | 8476 | sec->flags |= SEC_EXCLUDE; |
0a1b45a2 | 8477 | return true; |
b49e97c9 TS |
8478 | } |
8479 | ||
8480 | /* Record this stub in an array of local symbol stubs for | |
07d6d2b8 | 8481 | this BFD. */ |
698600e4 | 8482 | if (mips_elf_tdata (abfd)->local_stubs == NULL) |
b49e97c9 TS |
8483 | { |
8484 | unsigned long symcount; | |
8485 | asection **n; | |
8486 | bfd_size_type amt; | |
8487 | ||
8488 | if (elf_bad_symtab (abfd)) | |
8489 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
8490 | else | |
8491 | symcount = symtab_hdr->sh_info; | |
8492 | amt = symcount * sizeof (asection *); | |
9719ad41 | 8493 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 8494 | if (n == NULL) |
0a1b45a2 | 8495 | return false; |
698600e4 | 8496 | mips_elf_tdata (abfd)->local_stubs = n; |
b49e97c9 TS |
8497 | } |
8498 | ||
b9d58d71 | 8499 | sec->flags |= SEC_KEEP; |
698600e4 | 8500 | mips_elf_tdata (abfd)->local_stubs[r_symndx] = sec; |
b49e97c9 TS |
8501 | |
8502 | /* We don't need to set mips16_stubs_seen in this case. | |
07d6d2b8 AM |
8503 | That flag is used to see whether we need to look through |
8504 | the global symbol table for stubs. We don't need to set | |
8505 | it here, because we just have a local stub. */ | |
b49e97c9 TS |
8506 | } |
8507 | else | |
8508 | { | |
8509 | struct mips_elf_link_hash_entry *h; | |
8510 | ||
8511 | h = ((struct mips_elf_link_hash_entry *) | |
8512 | sym_hashes[r_symndx - extsymoff]); | |
8513 | ||
973a3492 L |
8514 | while (h->root.root.type == bfd_link_hash_indirect |
8515 | || h->root.root.type == bfd_link_hash_warning) | |
8516 | h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link; | |
8517 | ||
b49e97c9 TS |
8518 | /* H is the symbol this stub is for. */ |
8519 | ||
b9d58d71 TS |
8520 | /* If we already have an appropriate stub for this function, we |
8521 | don't need another one, so we can discard this one. Since | |
8522 | this function is called before the linker maps input sections | |
8523 | to output sections, we can easily discard it by setting the | |
8524 | SEC_EXCLUDE flag. */ | |
8525 | if (h->fn_stub != NULL) | |
8526 | { | |
8527 | sec->flags |= SEC_EXCLUDE; | |
0a1b45a2 | 8528 | return true; |
b9d58d71 TS |
8529 | } |
8530 | ||
8531 | sec->flags |= SEC_KEEP; | |
b49e97c9 | 8532 | h->fn_stub = sec; |
0a1b45a2 | 8533 | mips_elf_hash_table (info)->mips16_stubs_seen = true; |
b49e97c9 TS |
8534 | } |
8535 | } | |
b9d58d71 | 8536 | else if (CALL_STUB_P (name) || CALL_FP_STUB_P (name)) |
b49e97c9 TS |
8537 | { |
8538 | unsigned long r_symndx; | |
8539 | struct mips_elf_link_hash_entry *h; | |
8540 | asection **loc; | |
8541 | ||
8542 | /* Look at the relocation information to figure out which symbol | |
07d6d2b8 | 8543 | this is for. */ |
b49e97c9 | 8544 | |
cb4437b8 | 8545 | r_symndx = mips16_stub_symndx (bed, sec, relocs, rel_end); |
738e5348 RS |
8546 | if (r_symndx == 0) |
8547 | { | |
4eca0228 | 8548 | _bfd_error_handler |
695344c0 | 8549 | /* xgettext:c-format */ |
2c1c9679 | 8550 | (_("%pB: warning: cannot determine the target function for" |
738e5348 RS |
8551 | " stub section `%s'"), |
8552 | abfd, name); | |
8553 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 8554 | return false; |
738e5348 | 8555 | } |
b49e97c9 TS |
8556 | |
8557 | if (r_symndx < extsymoff | |
8558 | || sym_hashes[r_symndx - extsymoff] == NULL) | |
8559 | { | |
b9d58d71 | 8560 | asection *o; |
b49e97c9 | 8561 | |
b9d58d71 | 8562 | /* This stub is for a local symbol. This stub will only be |
07d6d2b8 AM |
8563 | needed if there is some relocation (R_MIPS16_26) in this BFD |
8564 | that refers to this symbol. */ | |
b9d58d71 TS |
8565 | for (o = abfd->sections; o != NULL; o = o->next) |
8566 | { | |
8567 | Elf_Internal_Rela *sec_relocs; | |
8568 | const Elf_Internal_Rela *r, *rend; | |
8569 | ||
8570 | /* We can ignore stub sections when looking for relocs. */ | |
8571 | if ((o->flags & SEC_RELOC) == 0 | |
8572 | || o->reloc_count == 0 | |
738e5348 | 8573 | || section_allows_mips16_refs_p (o)) |
b9d58d71 TS |
8574 | continue; |
8575 | ||
8576 | sec_relocs | |
8577 | = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, | |
8578 | info->keep_memory); | |
8579 | if (sec_relocs == NULL) | |
0a1b45a2 | 8580 | return false; |
b9d58d71 TS |
8581 | |
8582 | rend = sec_relocs + o->reloc_count; | |
8583 | for (r = sec_relocs; r < rend; r++) | |
8584 | if (ELF_R_SYM (abfd, r->r_info) == r_symndx | |
8585 | && ELF_R_TYPE (abfd, r->r_info) == R_MIPS16_26) | |
8586 | break; | |
8587 | ||
8588 | if (elf_section_data (o)->relocs != sec_relocs) | |
8589 | free (sec_relocs); | |
8590 | ||
8591 | if (r < rend) | |
8592 | break; | |
8593 | } | |
8594 | ||
8595 | if (o == NULL) | |
8596 | { | |
8597 | /* There is no non-call reloc for this stub, so we do | |
07d6d2b8 AM |
8598 | not need it. Since this function is called before |
8599 | the linker maps input sections to output sections, we | |
8600 | can easily discard it by setting the SEC_EXCLUDE | |
8601 | flag. */ | |
b9d58d71 | 8602 | sec->flags |= SEC_EXCLUDE; |
0a1b45a2 | 8603 | return true; |
b9d58d71 TS |
8604 | } |
8605 | ||
8606 | /* Record this stub in an array of local symbol call_stubs for | |
07d6d2b8 | 8607 | this BFD. */ |
698600e4 | 8608 | if (mips_elf_tdata (abfd)->local_call_stubs == NULL) |
b9d58d71 TS |
8609 | { |
8610 | unsigned long symcount; | |
8611 | asection **n; | |
8612 | bfd_size_type amt; | |
8613 | ||
8614 | if (elf_bad_symtab (abfd)) | |
8615 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); | |
8616 | else | |
8617 | symcount = symtab_hdr->sh_info; | |
8618 | amt = symcount * sizeof (asection *); | |
8619 | n = bfd_zalloc (abfd, amt); | |
8620 | if (n == NULL) | |
0a1b45a2 | 8621 | return false; |
698600e4 | 8622 | mips_elf_tdata (abfd)->local_call_stubs = n; |
b9d58d71 | 8623 | } |
b49e97c9 | 8624 | |
b9d58d71 | 8625 | sec->flags |= SEC_KEEP; |
698600e4 | 8626 | mips_elf_tdata (abfd)->local_call_stubs[r_symndx] = sec; |
b49e97c9 | 8627 | |
b9d58d71 | 8628 | /* We don't need to set mips16_stubs_seen in this case. |
07d6d2b8 AM |
8629 | That flag is used to see whether we need to look through |
8630 | the global symbol table for stubs. We don't need to set | |
8631 | it here, because we just have a local stub. */ | |
b9d58d71 | 8632 | } |
b49e97c9 | 8633 | else |
b49e97c9 | 8634 | { |
b9d58d71 TS |
8635 | h = ((struct mips_elf_link_hash_entry *) |
8636 | sym_hashes[r_symndx - extsymoff]); | |
68ffbac6 | 8637 | |
b9d58d71 | 8638 | /* H is the symbol this stub is for. */ |
68ffbac6 | 8639 | |
b9d58d71 TS |
8640 | if (CALL_FP_STUB_P (name)) |
8641 | loc = &h->call_fp_stub; | |
8642 | else | |
8643 | loc = &h->call_stub; | |
68ffbac6 | 8644 | |
b9d58d71 TS |
8645 | /* If we already have an appropriate stub for this function, we |
8646 | don't need another one, so we can discard this one. Since | |
8647 | this function is called before the linker maps input sections | |
8648 | to output sections, we can easily discard it by setting the | |
8649 | SEC_EXCLUDE flag. */ | |
8650 | if (*loc != NULL) | |
8651 | { | |
8652 | sec->flags |= SEC_EXCLUDE; | |
0a1b45a2 | 8653 | return true; |
b9d58d71 | 8654 | } |
b49e97c9 | 8655 | |
b9d58d71 TS |
8656 | sec->flags |= SEC_KEEP; |
8657 | *loc = sec; | |
0a1b45a2 | 8658 | mips_elf_hash_table (info)->mips16_stubs_seen = true; |
b9d58d71 | 8659 | } |
b49e97c9 TS |
8660 | } |
8661 | ||
b49e97c9 | 8662 | sreloc = NULL; |
c224138d | 8663 | contents = NULL; |
b49e97c9 TS |
8664 | for (rel = relocs; rel < rel_end; ++rel) |
8665 | { | |
8666 | unsigned long r_symndx; | |
8667 | unsigned int r_type; | |
8668 | struct elf_link_hash_entry *h; | |
0a1b45a2 AM |
8669 | bool can_make_dynamic_p; |
8670 | bool call_reloc_p; | |
8671 | bool constrain_symbol_p; | |
b49e97c9 TS |
8672 | |
8673 | r_symndx = ELF_R_SYM (abfd, rel->r_info); | |
8674 | r_type = ELF_R_TYPE (abfd, rel->r_info); | |
8675 | ||
8676 | if (r_symndx < extsymoff) | |
8677 | h = NULL; | |
8678 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) | |
8679 | { | |
4eca0228 | 8680 | _bfd_error_handler |
695344c0 | 8681 | /* xgettext:c-format */ |
2c1c9679 | 8682 | (_("%pB: malformed reloc detected for section %s"), |
d003868e | 8683 | abfd, name); |
b49e97c9 | 8684 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 8685 | return false; |
b49e97c9 TS |
8686 | } |
8687 | else | |
8688 | { | |
8689 | h = sym_hashes[r_symndx - extsymoff]; | |
81fbe831 AM |
8690 | if (h != NULL) |
8691 | { | |
8692 | while (h->root.type == bfd_link_hash_indirect | |
8693 | || h->root.type == bfd_link_hash_warning) | |
8694 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 | 8695 | } |
861fb55a | 8696 | } |
b49e97c9 | 8697 | |
861fb55a DJ |
8698 | /* Set CAN_MAKE_DYNAMIC_P to true if we can convert this |
8699 | relocation into a dynamic one. */ | |
0a1b45a2 | 8700 | can_make_dynamic_p = false; |
c5d6fa44 RS |
8701 | |
8702 | /* Set CALL_RELOC_P to true if the relocation is for a call, | |
8703 | and if pointer equality therefore doesn't matter. */ | |
0a1b45a2 | 8704 | call_reloc_p = false; |
c5d6fa44 RS |
8705 | |
8706 | /* Set CONSTRAIN_SYMBOL_P if we need to take the relocation | |
c4b126b8 | 8707 | into account when deciding how to define the symbol. */ |
0a1b45a2 | 8708 | constrain_symbol_p = true; |
c5d6fa44 | 8709 | |
861fb55a DJ |
8710 | switch (r_type) |
8711 | { | |
861fb55a DJ |
8712 | case R_MIPS_CALL16: |
8713 | case R_MIPS_CALL_HI16: | |
8714 | case R_MIPS_CALL_LO16: | |
c5d6fa44 RS |
8715 | case R_MIPS16_CALL16: |
8716 | case R_MICROMIPS_CALL16: | |
8717 | case R_MICROMIPS_CALL_HI16: | |
8718 | case R_MICROMIPS_CALL_LO16: | |
0a1b45a2 | 8719 | call_reloc_p = true; |
c5d6fa44 RS |
8720 | /* Fall through. */ |
8721 | ||
8722 | case R_MIPS_GOT16: | |
861fb55a DJ |
8723 | case R_MIPS_GOT_LO16: |
8724 | case R_MIPS_GOT_PAGE: | |
861fb55a | 8725 | case R_MIPS_GOT_DISP: |
47275900 MR |
8726 | case R_MIPS16_GOT16: |
8727 | case R_MICROMIPS_GOT16: | |
8728 | case R_MICROMIPS_GOT_LO16: | |
8729 | case R_MICROMIPS_GOT_PAGE: | |
8730 | case R_MICROMIPS_GOT_DISP: | |
8731 | /* If we have a symbol that will resolve to zero at static link | |
8732 | time and it is used by a GOT relocation applied to code we | |
8733 | cannot relax to an immediate zero load, then we will be using | |
8734 | the special `__gnu_absolute_zero' symbol whose value is zero | |
8735 | at dynamic load time. We ignore HI16-type GOT relocations at | |
8736 | this stage, because their handling will depend entirely on | |
8737 | the corresponding LO16-type GOT relocation. */ | |
8738 | if (!call_hi16_reloc_p (r_type) | |
8739 | && h != NULL | |
8740 | && bfd_link_pic (info) | |
8741 | && !htab->use_absolute_zero | |
8742 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
8743 | { | |
0a1b45a2 | 8744 | bool rel_reloc; |
47275900 MR |
8745 | |
8746 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) | |
0a1b45a2 | 8747 | return false; |
47275900 MR |
8748 | |
8749 | rel_reloc = mips_elf_rel_relocation_p (abfd, sec, relocs, rel); | |
8750 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, !rel_reloc); | |
73425813 AM |
8751 | if (bfd_reloc_offset_in_range (howto, abfd, sec, rel->r_offset)) |
8752 | if (!mips_elf_nullify_got_load (abfd, contents, rel, howto, | |
8753 | false)) | |
8754 | if (!mips_elf_define_absolute_zero (abfd, info, htab, | |
8755 | r_type)) | |
8756 | return false; | |
47275900 MR |
8757 | } |
8758 | ||
8759 | /* Fall through. */ | |
8760 | case R_MIPS_GOT_HI16: | |
8761 | case R_MIPS_GOT_OFST: | |
861fb55a DJ |
8762 | case R_MIPS_TLS_GOTTPREL: |
8763 | case R_MIPS_TLS_GD: | |
8764 | case R_MIPS_TLS_LDM: | |
d0f13682 CLT |
8765 | case R_MIPS16_TLS_GOTTPREL: |
8766 | case R_MIPS16_TLS_GD: | |
8767 | case R_MIPS16_TLS_LDM: | |
df58fc94 | 8768 | case R_MICROMIPS_GOT_HI16: |
df58fc94 | 8769 | case R_MICROMIPS_GOT_OFST: |
df58fc94 RS |
8770 | case R_MICROMIPS_TLS_GOTTPREL: |
8771 | case R_MICROMIPS_TLS_GD: | |
8772 | case R_MICROMIPS_TLS_LDM: | |
861fb55a DJ |
8773 | if (dynobj == NULL) |
8774 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
8775 | if (!mips_elf_create_got_section (dynobj, info)) | |
0a1b45a2 | 8776 | return false; |
90c14f0c L |
8777 | if (htab->root.target_os == is_vxworks |
8778 | && !bfd_link_pic (info)) | |
b49e97c9 | 8779 | { |
4eca0228 | 8780 | _bfd_error_handler |
695344c0 | 8781 | /* xgettext:c-format */ |
2dcf00ce AM |
8782 | (_("%pB: GOT reloc at %#" PRIx64 " not expected in executables"), |
8783 | abfd, (uint64_t) rel->r_offset); | |
861fb55a | 8784 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 8785 | return false; |
b49e97c9 | 8786 | } |
0a1b45a2 | 8787 | can_make_dynamic_p = true; |
861fb55a | 8788 | break; |
b49e97c9 | 8789 | |
c5d6fa44 | 8790 | case R_MIPS_NONE: |
99da6b5f | 8791 | case R_MIPS_JALR: |
df58fc94 | 8792 | case R_MICROMIPS_JALR: |
c5d6fa44 RS |
8793 | /* These relocations have empty fields and are purely there to |
8794 | provide link information. The symbol value doesn't matter. */ | |
0a1b45a2 | 8795 | constrain_symbol_p = false; |
c5d6fa44 RS |
8796 | break; |
8797 | ||
8798 | case R_MIPS_GPREL16: | |
8799 | case R_MIPS_GPREL32: | |
8800 | case R_MIPS16_GPREL: | |
8801 | case R_MICROMIPS_GPREL16: | |
8802 | /* GP-relative relocations always resolve to a definition in a | |
8803 | regular input file, ignoring the one-definition rule. This is | |
8804 | important for the GP setup sequence in NewABI code, which | |
8805 | always resolves to a local function even if other relocations | |
8806 | against the symbol wouldn't. */ | |
0a1b45a2 | 8807 | constrain_symbol_p = false; |
99da6b5f AN |
8808 | break; |
8809 | ||
861fb55a DJ |
8810 | case R_MIPS_32: |
8811 | case R_MIPS_REL32: | |
8812 | case R_MIPS_64: | |
8813 | /* In VxWorks executables, references to external symbols | |
8814 | must be handled using copy relocs or PLT entries; it is not | |
8815 | possible to convert this relocation into a dynamic one. | |
8816 | ||
8817 | For executables that use PLTs and copy-relocs, we have a | |
8818 | choice between converting the relocation into a dynamic | |
8819 | one or using copy relocations or PLT entries. It is | |
8820 | usually better to do the former, unless the relocation is | |
8821 | against a read-only section. */ | |
0e1862bb | 8822 | if ((bfd_link_pic (info) |
861fb55a | 8823 | || (h != NULL |
90c14f0c | 8824 | && htab->root.target_os != is_vxworks |
861fb55a DJ |
8825 | && strcmp (h->root.root.string, "__gnu_local_gp") != 0 |
8826 | && !(!info->nocopyreloc | |
8827 | && !PIC_OBJECT_P (abfd) | |
8828 | && MIPS_ELF_READONLY_SECTION (sec)))) | |
8829 | && (sec->flags & SEC_ALLOC) != 0) | |
b49e97c9 | 8830 | { |
0a1b45a2 | 8831 | can_make_dynamic_p = true; |
b49e97c9 TS |
8832 | if (dynobj == NULL) |
8833 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
861fb55a | 8834 | } |
c5d6fa44 | 8835 | break; |
b49e97c9 | 8836 | |
861fb55a DJ |
8837 | case R_MIPS_26: |
8838 | case R_MIPS_PC16: | |
7361da2c AB |
8839 | case R_MIPS_PC21_S2: |
8840 | case R_MIPS_PC26_S2: | |
861fb55a | 8841 | case R_MIPS16_26: |
c9775dde | 8842 | case R_MIPS16_PC16_S1: |
df58fc94 RS |
8843 | case R_MICROMIPS_26_S1: |
8844 | case R_MICROMIPS_PC7_S1: | |
8845 | case R_MICROMIPS_PC10_S1: | |
8846 | case R_MICROMIPS_PC16_S1: | |
8847 | case R_MICROMIPS_PC23_S2: | |
0a1b45a2 | 8848 | call_reloc_p = true; |
861fb55a | 8849 | break; |
b49e97c9 TS |
8850 | } |
8851 | ||
0a44bf69 RS |
8852 | if (h) |
8853 | { | |
c5d6fa44 RS |
8854 | if (constrain_symbol_p) |
8855 | { | |
8856 | if (!can_make_dynamic_p) | |
8857 | ((struct mips_elf_link_hash_entry *) h)->has_static_relocs = 1; | |
8858 | ||
8859 | if (!call_reloc_p) | |
8860 | h->pointer_equality_needed = 1; | |
8861 | ||
8862 | /* We must not create a stub for a symbol that has | |
8863 | relocations related to taking the function's address. | |
8864 | This doesn't apply to VxWorks, where CALL relocs refer | |
8865 | to a .got.plt entry instead of a normal .got entry. */ | |
90c14f0c L |
8866 | if (htab->root.target_os != is_vxworks |
8867 | && (!can_make_dynamic_p || !call_reloc_p)) | |
0a1b45a2 | 8868 | ((struct mips_elf_link_hash_entry *) h)->no_fn_stub = true; |
c5d6fa44 RS |
8869 | } |
8870 | ||
0a44bf69 RS |
8871 | /* Relocations against the special VxWorks __GOTT_BASE__ and |
8872 | __GOTT_INDEX__ symbols must be left to the loader. Allocate | |
8873 | room for them in .rela.dyn. */ | |
8874 | if (is_gott_symbol (info, h)) | |
8875 | { | |
8876 | if (sreloc == NULL) | |
8877 | { | |
0a1b45a2 | 8878 | sreloc = mips_elf_rel_dyn_section (info, true); |
0a44bf69 | 8879 | if (sreloc == NULL) |
0a1b45a2 | 8880 | return false; |
0a44bf69 RS |
8881 | } |
8882 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
9e3313ae RS |
8883 | if (MIPS_ELF_READONLY_SECTION (sec)) |
8884 | /* We tell the dynamic linker that there are | |
8885 | relocations against the text segment. */ | |
8886 | info->flags |= DF_TEXTREL; | |
0a44bf69 RS |
8887 | } |
8888 | } | |
df58fc94 RS |
8889 | else if (call_lo16_reloc_p (r_type) |
8890 | || got_lo16_reloc_p (r_type) | |
8891 | || got_disp_reloc_p (r_type) | |
90c14f0c L |
8892 | || (got16_reloc_p (r_type) |
8893 | && htab->root.target_os == is_vxworks)) | |
b49e97c9 TS |
8894 | { |
8895 | /* We may need a local GOT entry for this relocation. We | |
8896 | don't count R_MIPS_GOT_PAGE because we can estimate the | |
8897 | maximum number of pages needed by looking at the size of | |
738e5348 RS |
8898 | the segment. Similar comments apply to R_MIPS*_GOT16 and |
8899 | R_MIPS*_CALL16, except on VxWorks, where GOT relocations | |
0a44bf69 | 8900 | always evaluate to "G". We don't count R_MIPS_GOT_HI16, or |
b49e97c9 | 8901 | R_MIPS_CALL_HI16 because these are always followed by an |
b15e6682 | 8902 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. */ |
a8028dd0 | 8903 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, |
e641e783 | 8904 | rel->r_addend, info, r_type)) |
0a1b45a2 | 8905 | return false; |
b49e97c9 TS |
8906 | } |
8907 | ||
8f0c309a CLT |
8908 | if (h != NULL |
8909 | && mips_elf_relocation_needs_la25_stub (abfd, r_type, | |
8910 | ELF_ST_IS_MIPS16 (h->other))) | |
0a1b45a2 | 8911 | ((struct mips_elf_link_hash_entry *) h)->has_nonpic_branches = true; |
861fb55a | 8912 | |
b49e97c9 TS |
8913 | switch (r_type) |
8914 | { | |
8915 | case R_MIPS_CALL16: | |
738e5348 | 8916 | case R_MIPS16_CALL16: |
df58fc94 | 8917 | case R_MICROMIPS_CALL16: |
b49e97c9 TS |
8918 | if (h == NULL) |
8919 | { | |
4eca0228 | 8920 | _bfd_error_handler |
695344c0 | 8921 | /* xgettext:c-format */ |
2dcf00ce AM |
8922 | (_("%pB: CALL16 reloc at %#" PRIx64 " not against global symbol"), |
8923 | abfd, (uint64_t) rel->r_offset); | |
b49e97c9 | 8924 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 8925 | return false; |
b49e97c9 TS |
8926 | } |
8927 | /* Fall through. */ | |
8928 | ||
8929 | case R_MIPS_CALL_HI16: | |
8930 | case R_MIPS_CALL_LO16: | |
df58fc94 RS |
8931 | case R_MICROMIPS_CALL_HI16: |
8932 | case R_MICROMIPS_CALL_LO16: | |
b49e97c9 TS |
8933 | if (h != NULL) |
8934 | { | |
6ccf4795 RS |
8935 | /* Make sure there is room in the regular GOT to hold the |
8936 | function's address. We may eliminate it in favour of | |
8937 | a .got.plt entry later; see mips_elf_count_got_symbols. */ | |
0a1b45a2 | 8938 | if (!mips_elf_record_global_got_symbol (h, abfd, info, true, |
e641e783 | 8939 | r_type)) |
0a1b45a2 | 8940 | return false; |
b49e97c9 TS |
8941 | |
8942 | /* We need a stub, not a plt entry for the undefined | |
8943 | function. But we record it as if it needs plt. See | |
c152c796 | 8944 | _bfd_elf_adjust_dynamic_symbol. */ |
f5385ebf | 8945 | h->needs_plt = 1; |
b49e97c9 TS |
8946 | h->type = STT_FUNC; |
8947 | } | |
8948 | break; | |
8949 | ||
0fdc1bf1 | 8950 | case R_MIPS_GOT_PAGE: |
df58fc94 | 8951 | case R_MICROMIPS_GOT_PAGE: |
738e5348 | 8952 | case R_MIPS16_GOT16: |
b49e97c9 TS |
8953 | case R_MIPS_GOT16: |
8954 | case R_MIPS_GOT_HI16: | |
8955 | case R_MIPS_GOT_LO16: | |
df58fc94 RS |
8956 | case R_MICROMIPS_GOT16: |
8957 | case R_MICROMIPS_GOT_HI16: | |
8958 | case R_MICROMIPS_GOT_LO16: | |
8959 | if (!h || got_page_reloc_p (r_type)) | |
c224138d | 8960 | { |
3a3b6725 DJ |
8961 | /* This relocation needs (or may need, if h != NULL) a |
8962 | page entry in the GOT. For R_MIPS_GOT_PAGE we do not | |
8963 | know for sure until we know whether the symbol is | |
8964 | preemptible. */ | |
c224138d RS |
8965 | if (mips_elf_rel_relocation_p (abfd, sec, relocs, rel)) |
8966 | { | |
8967 | if (!mips_elf_get_section_contents (abfd, sec, &contents)) | |
0a1b45a2 AM |
8968 | return false; |
8969 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, false); | |
73425813 | 8970 | addend = mips_elf_read_rel_addend (abfd, sec, rel, |
c224138d | 8971 | howto, contents); |
9684f078 | 8972 | if (got16_reloc_p (r_type)) |
73425813 | 8973 | mips_elf_add_lo16_rel_addend (abfd, sec, rel, rel_end, |
c224138d RS |
8974 | contents, &addend); |
8975 | else | |
8976 | addend <<= howto->rightshift; | |
8977 | } | |
8978 | else | |
8979 | addend = rel->r_addend; | |
13db6b44 RS |
8980 | if (!mips_elf_record_got_page_ref (info, abfd, r_symndx, |
8981 | h, addend)) | |
0a1b45a2 | 8982 | return false; |
13db6b44 RS |
8983 | |
8984 | if (h) | |
8985 | { | |
8986 | struct mips_elf_link_hash_entry *hmips = | |
8987 | (struct mips_elf_link_hash_entry *) h; | |
8988 | ||
8989 | /* This symbol is definitely not overridable. */ | |
8990 | if (hmips->root.def_regular | |
0e1862bb | 8991 | && ! (bfd_link_pic (info) && ! info->symbolic |
13db6b44 RS |
8992 | && ! hmips->root.forced_local)) |
8993 | h = NULL; | |
8994 | } | |
c224138d | 8995 | } |
13db6b44 RS |
8996 | /* If this is a global, overridable symbol, GOT_PAGE will |
8997 | decay to GOT_DISP, so we'll need a GOT entry for it. */ | |
c224138d RS |
8998 | /* Fall through. */ |
8999 | ||
b49e97c9 | 9000 | case R_MIPS_GOT_DISP: |
df58fc94 | 9001 | case R_MICROMIPS_GOT_DISP: |
6ccf4795 | 9002 | if (h && !mips_elf_record_global_got_symbol (h, abfd, info, |
0a1b45a2 AM |
9003 | false, r_type)) |
9004 | return false; | |
b49e97c9 TS |
9005 | break; |
9006 | ||
0f20cc35 | 9007 | case R_MIPS_TLS_GOTTPREL: |
d0f13682 | 9008 | case R_MIPS16_TLS_GOTTPREL: |
df58fc94 | 9009 | case R_MICROMIPS_TLS_GOTTPREL: |
0e1862bb | 9010 | if (bfd_link_pic (info)) |
0f20cc35 DJ |
9011 | info->flags |= DF_STATIC_TLS; |
9012 | /* Fall through */ | |
9013 | ||
9014 | case R_MIPS_TLS_LDM: | |
d0f13682 | 9015 | case R_MIPS16_TLS_LDM: |
df58fc94 RS |
9016 | case R_MICROMIPS_TLS_LDM: |
9017 | if (tls_ldm_reloc_p (r_type)) | |
0f20cc35 | 9018 | { |
cf35638d | 9019 | r_symndx = STN_UNDEF; |
0f20cc35 DJ |
9020 | h = NULL; |
9021 | } | |
9022 | /* Fall through */ | |
9023 | ||
9024 | case R_MIPS_TLS_GD: | |
d0f13682 | 9025 | case R_MIPS16_TLS_GD: |
df58fc94 | 9026 | case R_MICROMIPS_TLS_GD: |
0f20cc35 DJ |
9027 | /* This symbol requires a global offset table entry, or two |
9028 | for TLS GD relocations. */ | |
e641e783 RS |
9029 | if (h != NULL) |
9030 | { | |
9031 | if (!mips_elf_record_global_got_symbol (h, abfd, info, | |
0a1b45a2 AM |
9032 | false, r_type)) |
9033 | return false; | |
e641e783 RS |
9034 | } |
9035 | else | |
9036 | { | |
9037 | if (!mips_elf_record_local_got_symbol (abfd, r_symndx, | |
9038 | rel->r_addend, | |
9039 | info, r_type)) | |
0a1b45a2 | 9040 | return false; |
e641e783 | 9041 | } |
0f20cc35 DJ |
9042 | break; |
9043 | ||
b49e97c9 TS |
9044 | case R_MIPS_32: |
9045 | case R_MIPS_REL32: | |
9046 | case R_MIPS_64: | |
0a44bf69 RS |
9047 | /* In VxWorks executables, references to external symbols |
9048 | are handled using copy relocs or PLT stubs, so there's | |
9049 | no need to add a .rela.dyn entry for this relocation. */ | |
861fb55a | 9050 | if (can_make_dynamic_p) |
b49e97c9 TS |
9051 | { |
9052 | if (sreloc == NULL) | |
9053 | { | |
0a1b45a2 | 9054 | sreloc = mips_elf_rel_dyn_section (info, true); |
b49e97c9 | 9055 | if (sreloc == NULL) |
0a1b45a2 | 9056 | return false; |
b49e97c9 | 9057 | } |
0e1862bb | 9058 | if (bfd_link_pic (info) && h == NULL) |
82f0cfbd EC |
9059 | { |
9060 | /* When creating a shared object, we must copy these | |
9061 | reloc types into the output file as R_MIPS_REL32 | |
0a44bf69 RS |
9062 | relocs. Make room for this reloc in .rel(a).dyn. */ |
9063 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
943284cc | 9064 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
9065 | /* We tell the dynamic linker that there are |
9066 | relocations against the text segment. */ | |
9067 | info->flags |= DF_TEXTREL; | |
9068 | } | |
b49e97c9 TS |
9069 | else |
9070 | { | |
9071 | struct mips_elf_link_hash_entry *hmips; | |
82f0cfbd | 9072 | |
9a59ad6b DJ |
9073 | /* For a shared object, we must copy this relocation |
9074 | unless the symbol turns out to be undefined and | |
9075 | weak with non-default visibility, in which case | |
9076 | it will be left as zero. | |
9077 | ||
9078 | We could elide R_MIPS_REL32 for locally binding symbols | |
9079 | in shared libraries, but do not yet do so. | |
9080 | ||
9081 | For an executable, we only need to copy this | |
9082 | reloc if the symbol is defined in a dynamic | |
9083 | object. */ | |
b49e97c9 TS |
9084 | hmips = (struct mips_elf_link_hash_entry *) h; |
9085 | ++hmips->possibly_dynamic_relocs; | |
943284cc | 9086 | if (MIPS_ELF_READONLY_SECTION (sec)) |
82f0cfbd EC |
9087 | /* We need it to tell the dynamic linker if there |
9088 | are relocations against the text segment. */ | |
0a1b45a2 | 9089 | hmips->readonly_reloc = true; |
b49e97c9 | 9090 | } |
b49e97c9 TS |
9091 | } |
9092 | ||
9093 | if (SGI_COMPAT (abfd)) | |
9094 | mips_elf_hash_table (info)->compact_rel_size += | |
9095 | sizeof (Elf32_External_crinfo); | |
9096 | break; | |
9097 | ||
9098 | case R_MIPS_26: | |
9099 | case R_MIPS_GPREL16: | |
9100 | case R_MIPS_LITERAL: | |
9101 | case R_MIPS_GPREL32: | |
df58fc94 RS |
9102 | case R_MICROMIPS_26_S1: |
9103 | case R_MICROMIPS_GPREL16: | |
9104 | case R_MICROMIPS_LITERAL: | |
9105 | case R_MICROMIPS_GPREL7_S2: | |
b49e97c9 TS |
9106 | if (SGI_COMPAT (abfd)) |
9107 | mips_elf_hash_table (info)->compact_rel_size += | |
9108 | sizeof (Elf32_External_crinfo); | |
9109 | break; | |
9110 | ||
9111 | /* This relocation describes the C++ object vtable hierarchy. | |
9112 | Reconstruct it for later use during GC. */ | |
9113 | case R_MIPS_GNU_VTINHERIT: | |
c152c796 | 9114 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
0a1b45a2 | 9115 | return false; |
b49e97c9 TS |
9116 | break; |
9117 | ||
9118 | /* This relocation describes which C++ vtable entries are actually | |
9119 | used. Record for later use during GC. */ | |
9120 | case R_MIPS_GNU_VTENTRY: | |
a0ea3a14 | 9121 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
0a1b45a2 | 9122 | return false; |
b49e97c9 TS |
9123 | break; |
9124 | ||
9125 | default: | |
9126 | break; | |
9127 | } | |
9128 | ||
1bbce132 | 9129 | /* Record the need for a PLT entry. At this point we don't know |
07d6d2b8 AM |
9130 | yet if we are going to create a PLT in the first place, but |
9131 | we only record whether the relocation requires a standard MIPS | |
9132 | or a compressed code entry anyway. If we don't make a PLT after | |
9133 | all, then we'll just ignore these arrangements. Likewise if | |
9134 | a PLT entry is not created because the symbol is satisfied | |
9135 | locally. */ | |
1bbce132 | 9136 | if (h != NULL |
54806ffa MR |
9137 | && (branch_reloc_p (r_type) |
9138 | || mips16_branch_reloc_p (r_type) | |
9139 | || micromips_branch_reloc_p (r_type)) | |
1bbce132 MR |
9140 | && !SYMBOL_CALLS_LOCAL (info, h)) |
9141 | { | |
9142 | if (h->plt.plist == NULL) | |
9143 | h->plt.plist = mips_elf_make_plt_record (abfd); | |
9144 | if (h->plt.plist == NULL) | |
0a1b45a2 | 9145 | return false; |
1bbce132 | 9146 | |
54806ffa | 9147 | if (branch_reloc_p (r_type)) |
0a1b45a2 | 9148 | h->plt.plist->need_mips = true; |
1bbce132 | 9149 | else |
0a1b45a2 | 9150 | h->plt.plist->need_comp = true; |
1bbce132 MR |
9151 | } |
9152 | ||
738e5348 RS |
9153 | /* See if this reloc would need to refer to a MIPS16 hard-float stub, |
9154 | if there is one. We only need to handle global symbols here; | |
9155 | we decide whether to keep or delete stubs for local symbols | |
9156 | when processing the stub's relocations. */ | |
b49e97c9 | 9157 | if (h != NULL |
738e5348 RS |
9158 | && !mips16_call_reloc_p (r_type) |
9159 | && !section_allows_mips16_refs_p (sec)) | |
b49e97c9 TS |
9160 | { |
9161 | struct mips_elf_link_hash_entry *mh; | |
9162 | ||
9163 | mh = (struct mips_elf_link_hash_entry *) h; | |
0a1b45a2 | 9164 | mh->need_fn_stub = true; |
b49e97c9 | 9165 | } |
861fb55a DJ |
9166 | |
9167 | /* Refuse some position-dependent relocations when creating a | |
9168 | shared library. Do not refuse R_MIPS_32 / R_MIPS_64; they're | |
9169 | not PIC, but we can create dynamic relocations and the result | |
9170 | will be fine. Also do not refuse R_MIPS_LO16, which can be | |
9171 | combined with R_MIPS_GOT16. */ | |
0e1862bb | 9172 | if (bfd_link_pic (info)) |
861fb55a DJ |
9173 | { |
9174 | switch (r_type) | |
9175 | { | |
b474a202 FS |
9176 | case R_MIPS_TLS_TPREL_HI16: |
9177 | case R_MIPS16_TLS_TPREL_HI16: | |
9178 | case R_MICROMIPS_TLS_TPREL_HI16: | |
9179 | case R_MIPS_TLS_TPREL_LO16: | |
9180 | case R_MIPS16_TLS_TPREL_LO16: | |
9181 | case R_MICROMIPS_TLS_TPREL_LO16: | |
9182 | /* These are okay in PIE, but not in a shared library. */ | |
9183 | if (bfd_link_executable (info)) | |
9184 | break; | |
9185 | ||
9186 | /* FALLTHROUGH */ | |
9187 | ||
861fb55a DJ |
9188 | case R_MIPS16_HI16: |
9189 | case R_MIPS_HI16: | |
9190 | case R_MIPS_HIGHER: | |
9191 | case R_MIPS_HIGHEST: | |
df58fc94 RS |
9192 | case R_MICROMIPS_HI16: |
9193 | case R_MICROMIPS_HIGHER: | |
9194 | case R_MICROMIPS_HIGHEST: | |
861fb55a DJ |
9195 | /* Don't refuse a high part relocation if it's against |
9196 | no symbol (e.g. part of a compound relocation). */ | |
cf35638d | 9197 | if (r_symndx == STN_UNDEF) |
861fb55a DJ |
9198 | break; |
9199 | ||
3c7687b9 | 9200 | /* Likewise an absolute symbol. */ |
304f09d0 | 9201 | if (h != NULL && bfd_is_abs_symbol (&h->root)) |
3c7687b9 MR |
9202 | break; |
9203 | ||
861fb55a DJ |
9204 | /* R_MIPS_HI16 against _gp_disp is used for $gp setup, |
9205 | and has a special meaning. */ | |
9206 | if (!NEWABI_P (abfd) && h != NULL | |
9207 | && strcmp (h->root.root.string, "_gp_disp") == 0) | |
9208 | break; | |
9209 | ||
0fc1eb3c RS |
9210 | /* Likewise __GOTT_BASE__ and __GOTT_INDEX__ on VxWorks. */ |
9211 | if (is_gott_symbol (info, h)) | |
9212 | break; | |
9213 | ||
861fb55a DJ |
9214 | /* FALLTHROUGH */ |
9215 | ||
9216 | case R_MIPS16_26: | |
9217 | case R_MIPS_26: | |
df58fc94 | 9218 | case R_MICROMIPS_26_S1: |
304f09d0 FS |
9219 | howto = MIPS_ELF_RTYPE_TO_HOWTO (abfd, r_type, NEWABI_P (abfd)); |
9220 | /* An error for unsupported relocations is raised as part | |
9221 | of the above search, so we can skip the following. */ | |
9222 | if (howto != NULL) | |
9223 | info->callbacks->einfo | |
9224 | /* xgettext:c-format */ | |
9225 | (_("%X%H: relocation %s against `%s' cannot be used" | |
9226 | " when making a shared object; recompile with -fPIC\n"), | |
9227 | abfd, sec, rel->r_offset, howto->name, | |
9228 | (h) ? h->root.root.string : "a local symbol"); | |
aff68bd0 | 9229 | break; |
861fb55a DJ |
9230 | default: |
9231 | break; | |
9232 | } | |
9233 | } | |
b49e97c9 TS |
9234 | } |
9235 | ||
0a1b45a2 | 9236 | return true; |
b49e97c9 TS |
9237 | } |
9238 | \f | |
9a59ad6b DJ |
9239 | /* Allocate space for global sym dynamic relocs. */ |
9240 | ||
0a1b45a2 | 9241 | static bool |
9a59ad6b DJ |
9242 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
9243 | { | |
9244 | struct bfd_link_info *info = inf; | |
9245 | bfd *dynobj; | |
9246 | struct mips_elf_link_hash_entry *hmips; | |
9247 | struct mips_elf_link_hash_table *htab; | |
9248 | ||
9249 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9250 | BFD_ASSERT (htab != NULL); |
9251 | ||
9a59ad6b DJ |
9252 | dynobj = elf_hash_table (info)->dynobj; |
9253 | hmips = (struct mips_elf_link_hash_entry *) h; | |
9254 | ||
9255 | /* VxWorks executables are handled elsewhere; we only need to | |
9256 | allocate relocations in shared objects. */ | |
90c14f0c | 9257 | if (htab->root.target_os == is_vxworks && !bfd_link_pic (info)) |
0a1b45a2 | 9258 | return true; |
9a59ad6b | 9259 | |
7686d77d AM |
9260 | /* Ignore indirect symbols. All relocations against such symbols |
9261 | will be redirected to the target symbol. */ | |
9262 | if (h->root.type == bfd_link_hash_indirect) | |
0a1b45a2 | 9263 | return true; |
63897e2c | 9264 | |
9a59ad6b DJ |
9265 | /* If this symbol is defined in a dynamic object, or we are creating |
9266 | a shared library, we will need to copy any R_MIPS_32 or | |
9267 | R_MIPS_REL32 relocs against it into the output file. */ | |
0e1862bb | 9268 | if (! bfd_link_relocatable (info) |
9a59ad6b DJ |
9269 | && hmips->possibly_dynamic_relocs != 0 |
9270 | && (h->root.type == bfd_link_hash_defweak | |
625ef6dc | 9271 | || (!h->def_regular && !ELF_COMMON_DEF_P (h)) |
0e1862bb | 9272 | || bfd_link_pic (info))) |
9a59ad6b | 9273 | { |
0a1b45a2 | 9274 | bool do_copy = true; |
9a59ad6b DJ |
9275 | |
9276 | if (h->root.type == bfd_link_hash_undefweak) | |
9277 | { | |
262e07d0 MR |
9278 | /* Do not copy relocations for undefined weak symbols that |
9279 | we are not going to export. */ | |
9280 | if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
0a1b45a2 | 9281 | do_copy = false; |
9a59ad6b DJ |
9282 | |
9283 | /* Make sure undefined weak symbols are output as a dynamic | |
9284 | symbol in PIEs. */ | |
9285 | else if (h->dynindx == -1 && !h->forced_local) | |
9286 | { | |
9287 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 9288 | return false; |
9a59ad6b DJ |
9289 | } |
9290 | } | |
9291 | ||
9292 | if (do_copy) | |
9293 | { | |
aff469fa | 9294 | /* Even though we don't directly need a GOT entry for this symbol, |
f7ff1106 RS |
9295 | the SVR4 psABI requires it to have a dynamic symbol table |
9296 | index greater that DT_MIPS_GOTSYM if there are dynamic | |
9297 | relocations against it. | |
9298 | ||
9299 | VxWorks does not enforce the same mapping between the GOT | |
9300 | and the symbol table, so the same requirement does not | |
9301 | apply there. */ | |
90c14f0c | 9302 | if (htab->root.target_os != is_vxworks) |
6ccf4795 RS |
9303 | { |
9304 | if (hmips->global_got_area > GGA_RELOC_ONLY) | |
9305 | hmips->global_got_area = GGA_RELOC_ONLY; | |
0a1b45a2 | 9306 | hmips->got_only_for_calls = false; |
6ccf4795 | 9307 | } |
aff469fa | 9308 | |
9a59ad6b DJ |
9309 | mips_elf_allocate_dynamic_relocations |
9310 | (dynobj, info, hmips->possibly_dynamic_relocs); | |
9311 | if (hmips->readonly_reloc) | |
9312 | /* We tell the dynamic linker that there are relocations | |
9313 | against the text segment. */ | |
9314 | info->flags |= DF_TEXTREL; | |
9315 | } | |
9316 | } | |
9317 | ||
0a1b45a2 | 9318 | return true; |
9a59ad6b DJ |
9319 | } |
9320 | ||
b49e97c9 TS |
9321 | /* Adjust a symbol defined by a dynamic object and referenced by a |
9322 | regular object. The current definition is in some section of the | |
9323 | dynamic object, but we're not including those sections. We have to | |
9324 | change the definition to something the rest of the link can | |
9325 | understand. */ | |
9326 | ||
0a1b45a2 | 9327 | bool |
9719ad41 RS |
9328 | _bfd_mips_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
9329 | struct elf_link_hash_entry *h) | |
b49e97c9 TS |
9330 | { |
9331 | bfd *dynobj; | |
9332 | struct mips_elf_link_hash_entry *hmips; | |
5108fc1b | 9333 | struct mips_elf_link_hash_table *htab; |
5474d94f | 9334 | asection *s, *srel; |
b49e97c9 | 9335 | |
5108fc1b | 9336 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
9337 | BFD_ASSERT (htab != NULL); |
9338 | ||
b49e97c9 | 9339 | dynobj = elf_hash_table (info)->dynobj; |
861fb55a | 9340 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 TS |
9341 | |
9342 | /* Make sure we know what is going on here. */ | |
8e4979ac NC |
9343 | if (dynobj == NULL |
9344 | || (! h->needs_plt | |
9345 | && ! h->is_weakalias | |
9346 | && (! h->def_dynamic | |
9347 | || ! h->ref_regular | |
9348 | || h->def_regular))) | |
9349 | { | |
9350 | if (h->type == STT_GNU_IFUNC) | |
9351 | _bfd_error_handler (_("IFUNC symbol %s in dynamic symbol table - IFUNCS are not supported"), | |
9352 | h->root.root.string); | |
9353 | else | |
9354 | _bfd_error_handler (_("non-dynamic symbol %s in dynamic symbol table"), | |
9355 | h->root.root.string); | |
0a1b45a2 | 9356 | return true; |
8e4979ac | 9357 | } |
b49e97c9 | 9358 | |
b49e97c9 | 9359 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 9360 | |
861fb55a DJ |
9361 | /* If there are call relocations against an externally-defined symbol, |
9362 | see whether we can create a MIPS lazy-binding stub for it. We can | |
9363 | only do this if all references to the function are through call | |
9364 | relocations, and in that case, the traditional lazy-binding stubs | |
9365 | are much more efficient than PLT entries. | |
9366 | ||
9367 | Traditional stubs are only available on SVR4 psABI-based systems; | |
9368 | VxWorks always uses PLTs instead. */ | |
90c14f0c L |
9369 | if (htab->root.target_os != is_vxworks |
9370 | && h->needs_plt | |
9371 | && !hmips->no_fn_stub) | |
b49e97c9 TS |
9372 | { |
9373 | if (! elf_hash_table (info)->dynamic_sections_created) | |
0a1b45a2 | 9374 | return true; |
b49e97c9 TS |
9375 | |
9376 | /* If this symbol is not defined in a regular file, then set | |
9377 | the symbol to the stub location. This is required to make | |
9378 | function pointers compare as equal between the normal | |
9379 | executable and the shared library. */ | |
4b8377e7 MR |
9380 | if (!h->def_regular |
9381 | && !bfd_is_abs_section (htab->sstubs->output_section)) | |
b49e97c9 | 9382 | { |
0a1b45a2 | 9383 | hmips->needs_lazy_stub = true; |
33bb52fb | 9384 | htab->lazy_stub_count++; |
0a1b45a2 | 9385 | return true; |
b49e97c9 TS |
9386 | } |
9387 | } | |
861fb55a DJ |
9388 | /* As above, VxWorks requires PLT entries for externally-defined |
9389 | functions that are only accessed through call relocations. | |
b49e97c9 | 9390 | |
861fb55a DJ |
9391 | Both VxWorks and non-VxWorks targets also need PLT entries if there |
9392 | are static-only relocations against an externally-defined function. | |
9393 | This can technically occur for shared libraries if there are | |
9394 | branches to the symbol, although it is unlikely that this will be | |
9395 | used in practice due to the short ranges involved. It can occur | |
9396 | for any relative or absolute relocation in executables; in that | |
9397 | case, the PLT entry becomes the function's canonical address. */ | |
9398 | else if (((h->needs_plt && !hmips->no_fn_stub) | |
9399 | || (h->type == STT_FUNC && hmips->has_static_relocs)) | |
9400 | && htab->use_plts_and_copy_relocs | |
9401 | && !SYMBOL_CALLS_LOCAL (info, h) | |
9402 | && !(ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
9403 | && h->root.type == bfd_link_hash_undefweak)) | |
b49e97c9 | 9404 | { |
0a1b45a2 AM |
9405 | bool micromips_p = MICROMIPS_P (info->output_bfd); |
9406 | bool newabi_p = NEWABI_P (info->output_bfd); | |
1bbce132 MR |
9407 | |
9408 | /* If this is the first symbol to need a PLT entry, then make some | |
07d6d2b8 AM |
9409 | basic setup. Also work out PLT entry sizes. We'll need them |
9410 | for PLT offset calculations. */ | |
1bbce132 | 9411 | if (htab->plt_mips_offset + htab->plt_comp_offset == 0) |
861fb55a | 9412 | { |
ce558b89 | 9413 | BFD_ASSERT (htab->root.sgotplt->size == 0); |
1bbce132 | 9414 | BFD_ASSERT (htab->plt_got_index == 0); |
0a44bf69 | 9415 | |
861fb55a DJ |
9416 | /* If we're using the PLT additions to the psABI, each PLT |
9417 | entry is 16 bytes and the PLT0 entry is 32 bytes. | |
9418 | Encourage better cache usage by aligning. We do this | |
9419 | lazily to avoid pessimizing traditional objects. */ | |
90c14f0c | 9420 | if (htab->root.target_os != is_vxworks |
fd361982 | 9421 | && !bfd_set_section_alignment (htab->root.splt, 5)) |
0a1b45a2 | 9422 | return false; |
0a44bf69 | 9423 | |
861fb55a DJ |
9424 | /* Make sure that .got.plt is word-aligned. We do this lazily |
9425 | for the same reason as above. */ | |
fd361982 | 9426 | if (!bfd_set_section_alignment (htab->root.sgotplt, |
861fb55a | 9427 | MIPS_ELF_LOG_FILE_ALIGN (dynobj))) |
0a1b45a2 | 9428 | return false; |
0a44bf69 | 9429 | |
861fb55a DJ |
9430 | /* On non-VxWorks targets, the first two entries in .got.plt |
9431 | are reserved. */ | |
90c14f0c | 9432 | if (htab->root.target_os != is_vxworks) |
1bbce132 MR |
9433 | htab->plt_got_index |
9434 | += (get_elf_backend_data (dynobj)->got_header_size | |
9435 | / MIPS_ELF_GOT_SIZE (dynobj)); | |
0a44bf69 | 9436 | |
861fb55a DJ |
9437 | /* On VxWorks, also allocate room for the header's |
9438 | .rela.plt.unloaded entries. */ | |
90c14f0c L |
9439 | if (htab->root.target_os == is_vxworks |
9440 | && !bfd_link_pic (info)) | |
0a44bf69 | 9441 | htab->srelplt2->size += 2 * sizeof (Elf32_External_Rela); |
1bbce132 MR |
9442 | |
9443 | /* Now work out the sizes of individual PLT entries. */ | |
90c14f0c L |
9444 | if (htab->root.target_os == is_vxworks |
9445 | && bfd_link_pic (info)) | |
1bbce132 MR |
9446 | htab->plt_mips_entry_size |
9447 | = 4 * ARRAY_SIZE (mips_vxworks_shared_plt_entry); | |
90c14f0c | 9448 | else if (htab->root.target_os == is_vxworks) |
1bbce132 MR |
9449 | htab->plt_mips_entry_size |
9450 | = 4 * ARRAY_SIZE (mips_vxworks_exec_plt_entry); | |
9451 | else if (newabi_p) | |
9452 | htab->plt_mips_entry_size | |
9453 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
833794fc | 9454 | else if (!micromips_p) |
1bbce132 MR |
9455 | { |
9456 | htab->plt_mips_entry_size | |
9457 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
9458 | htab->plt_comp_entry_size | |
833794fc MR |
9459 | = 2 * ARRAY_SIZE (mips16_o32_exec_plt_entry); |
9460 | } | |
9461 | else if (htab->insn32) | |
9462 | { | |
9463 | htab->plt_mips_entry_size | |
9464 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
9465 | htab->plt_comp_entry_size | |
9466 | = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt_entry); | |
1bbce132 MR |
9467 | } |
9468 | else | |
9469 | { | |
9470 | htab->plt_mips_entry_size | |
9471 | = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
9472 | htab->plt_comp_entry_size | |
833794fc | 9473 | = 2 * ARRAY_SIZE (micromips_o32_exec_plt_entry); |
1bbce132 | 9474 | } |
0a44bf69 RS |
9475 | } |
9476 | ||
1bbce132 MR |
9477 | if (h->plt.plist == NULL) |
9478 | h->plt.plist = mips_elf_make_plt_record (dynobj); | |
9479 | if (h->plt.plist == NULL) | |
0a1b45a2 | 9480 | return false; |
1bbce132 MR |
9481 | |
9482 | /* There are no defined MIPS16 or microMIPS PLT entries for VxWorks, | |
07d6d2b8 | 9483 | n32 or n64, so always use a standard entry there. |
1bbce132 | 9484 | |
07d6d2b8 AM |
9485 | If the symbol has a MIPS16 call stub and gets a PLT entry, then |
9486 | all MIPS16 calls will go via that stub, and there is no benefit | |
9487 | to having a MIPS16 entry. And in the case of call_stub a | |
9488 | standard entry actually has to be used as the stub ends with a J | |
9489 | instruction. */ | |
1bbce132 | 9490 | if (newabi_p |
90c14f0c | 9491 | || htab->root.target_os == is_vxworks |
1bbce132 MR |
9492 | || hmips->call_stub |
9493 | || hmips->call_fp_stub) | |
9494 | { | |
0a1b45a2 AM |
9495 | h->plt.plist->need_mips = true; |
9496 | h->plt.plist->need_comp = false; | |
1bbce132 MR |
9497 | } |
9498 | ||
9499 | /* Otherwise, if there are no direct calls to the function, we | |
07d6d2b8 AM |
9500 | have a free choice of whether to use standard or compressed |
9501 | entries. Prefer microMIPS entries if the object is known to | |
9502 | contain microMIPS code, so that it becomes possible to create | |
9503 | pure microMIPS binaries. Prefer standard entries otherwise, | |
9504 | because MIPS16 ones are no smaller and are usually slower. */ | |
1bbce132 MR |
9505 | if (!h->plt.plist->need_mips && !h->plt.plist->need_comp) |
9506 | { | |
9507 | if (micromips_p) | |
0a1b45a2 | 9508 | h->plt.plist->need_comp = true; |
1bbce132 | 9509 | else |
0a1b45a2 | 9510 | h->plt.plist->need_mips = true; |
1bbce132 MR |
9511 | } |
9512 | ||
9513 | if (h->plt.plist->need_mips) | |
9514 | { | |
9515 | h->plt.plist->mips_offset = htab->plt_mips_offset; | |
9516 | htab->plt_mips_offset += htab->plt_mips_entry_size; | |
9517 | } | |
9518 | if (h->plt.plist->need_comp) | |
9519 | { | |
9520 | h->plt.plist->comp_offset = htab->plt_comp_offset; | |
9521 | htab->plt_comp_offset += htab->plt_comp_entry_size; | |
9522 | } | |
9523 | ||
9524 | /* Reserve the corresponding .got.plt entry now too. */ | |
9525 | h->plt.plist->gotplt_index = htab->plt_got_index++; | |
0a44bf69 RS |
9526 | |
9527 | /* If the output file has no definition of the symbol, set the | |
861fb55a | 9528 | symbol's value to the address of the stub. */ |
0e1862bb | 9529 | if (!bfd_link_pic (info) && !h->def_regular) |
0a1b45a2 | 9530 | hmips->use_plt_entry = true; |
0a44bf69 | 9531 | |
1bbce132 | 9532 | /* Make room for the R_MIPS_JUMP_SLOT relocation. */ |
90c14f0c | 9533 | htab->root.srelplt->size += (htab->root.target_os == is_vxworks |
ce558b89 AM |
9534 | ? MIPS_ELF_RELA_SIZE (dynobj) |
9535 | : MIPS_ELF_REL_SIZE (dynobj)); | |
0a44bf69 RS |
9536 | |
9537 | /* Make room for the .rela.plt.unloaded relocations. */ | |
90c14f0c | 9538 | if (htab->root.target_os == is_vxworks && !bfd_link_pic (info)) |
0a44bf69 RS |
9539 | htab->srelplt2->size += 3 * sizeof (Elf32_External_Rela); |
9540 | ||
861fb55a DJ |
9541 | /* All relocations against this symbol that could have been made |
9542 | dynamic will now refer to the PLT entry instead. */ | |
9543 | hmips->possibly_dynamic_relocs = 0; | |
0a44bf69 | 9544 | |
0a1b45a2 | 9545 | return true; |
0a44bf69 RS |
9546 | } |
9547 | ||
9548 | /* If this is a weak symbol, and there is a real definition, the | |
9549 | processor independent code will have arranged for us to see the | |
9550 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 9551 | if (h->is_weakalias) |
0a44bf69 | 9552 | { |
60d67dc8 AM |
9553 | struct elf_link_hash_entry *def = weakdef (h); |
9554 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
9555 | h->root.u.def.section = def->root.u.def.section; | |
9556 | h->root.u.def.value = def->root.u.def.value; | |
0a1b45a2 | 9557 | return true; |
0a44bf69 RS |
9558 | } |
9559 | ||
861fb55a DJ |
9560 | /* Otherwise, there is nothing further to do for symbols defined |
9561 | in regular objects. */ | |
9562 | if (h->def_regular) | |
0a1b45a2 | 9563 | return true; |
0a44bf69 | 9564 | |
861fb55a DJ |
9565 | /* There's also nothing more to do if we'll convert all relocations |
9566 | against this symbol into dynamic relocations. */ | |
9567 | if (!hmips->has_static_relocs) | |
0a1b45a2 | 9568 | return true; |
861fb55a DJ |
9569 | |
9570 | /* We're now relying on copy relocations. Complain if we have | |
9571 | some that we can't convert. */ | |
0e1862bb | 9572 | if (!htab->use_plts_and_copy_relocs || bfd_link_pic (info)) |
861fb55a | 9573 | { |
4eca0228 AM |
9574 | _bfd_error_handler (_("non-dynamic relocations refer to " |
9575 | "dynamic symbol %s"), | |
9576 | h->root.root.string); | |
861fb55a | 9577 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 9578 | return false; |
861fb55a DJ |
9579 | } |
9580 | ||
0a44bf69 RS |
9581 | /* We must allocate the symbol in our .dynbss section, which will |
9582 | become part of the .bss section of the executable. There will be | |
9583 | an entry for this symbol in the .dynsym section. The dynamic | |
9584 | object will contain position independent code, so all references | |
9585 | from the dynamic object to this symbol will go through the global | |
9586 | offset table. The dynamic linker will use the .dynsym entry to | |
9587 | determine the address it must put in the global offset table, so | |
9588 | both the dynamic object and the regular object will refer to the | |
9589 | same memory location for the variable. */ | |
9590 | ||
5474d94f AM |
9591 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
9592 | { | |
9593 | s = htab->root.sdynrelro; | |
9594 | srel = htab->root.sreldynrelro; | |
9595 | } | |
9596 | else | |
9597 | { | |
9598 | s = htab->root.sdynbss; | |
9599 | srel = htab->root.srelbss; | |
9600 | } | |
0a44bf69 RS |
9601 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
9602 | { | |
90c14f0c | 9603 | if (htab->root.target_os == is_vxworks) |
5474d94f | 9604 | srel->size += sizeof (Elf32_External_Rela); |
861fb55a DJ |
9605 | else |
9606 | mips_elf_allocate_dynamic_relocations (dynobj, info, 1); | |
0a44bf69 RS |
9607 | h->needs_copy = 1; |
9608 | } | |
9609 | ||
861fb55a DJ |
9610 | /* All relocations against this symbol that could have been made |
9611 | dynamic will now refer to the local copy instead. */ | |
9612 | hmips->possibly_dynamic_relocs = 0; | |
9613 | ||
5474d94f | 9614 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
0a44bf69 | 9615 | } |
b49e97c9 TS |
9616 | \f |
9617 | /* This function is called after all the input files have been read, | |
9618 | and the input sections have been assigned to output sections. We | |
9619 | check for any mips16 stub sections that we can discard. */ | |
9620 | ||
0a1b45a2 | 9621 | bool |
9719ad41 RS |
9622 | _bfd_mips_elf_always_size_sections (bfd *output_bfd, |
9623 | struct bfd_link_info *info) | |
b49e97c9 | 9624 | { |
351cdf24 | 9625 | asection *sect; |
0a44bf69 | 9626 | struct mips_elf_link_hash_table *htab; |
861fb55a | 9627 | struct mips_htab_traverse_info hti; |
0a44bf69 RS |
9628 | |
9629 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 9630 | BFD_ASSERT (htab != NULL); |
f4416af6 | 9631 | |
b49e97c9 | 9632 | /* The .reginfo section has a fixed size. */ |
351cdf24 MF |
9633 | sect = bfd_get_section_by_name (output_bfd, ".reginfo"); |
9634 | if (sect != NULL) | |
6798f8bf | 9635 | { |
fd361982 | 9636 | bfd_set_section_size (sect, sizeof (Elf32_External_RegInfo)); |
6798f8bf MR |
9637 | sect->flags |= SEC_FIXED_SIZE | SEC_HAS_CONTENTS; |
9638 | } | |
351cdf24 MF |
9639 | |
9640 | /* The .MIPS.abiflags section has a fixed size. */ | |
9641 | sect = bfd_get_section_by_name (output_bfd, ".MIPS.abiflags"); | |
9642 | if (sect != NULL) | |
6798f8bf | 9643 | { |
fd361982 | 9644 | bfd_set_section_size (sect, sizeof (Elf_External_ABIFlags_v0)); |
6798f8bf MR |
9645 | sect->flags |= SEC_FIXED_SIZE | SEC_HAS_CONTENTS; |
9646 | } | |
b49e97c9 | 9647 | |
861fb55a DJ |
9648 | hti.info = info; |
9649 | hti.output_bfd = output_bfd; | |
0a1b45a2 | 9650 | hti.error = false; |
861fb55a DJ |
9651 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
9652 | mips_elf_check_symbols, &hti); | |
9653 | if (hti.error) | |
0a1b45a2 | 9654 | return false; |
f4416af6 | 9655 | |
0a1b45a2 | 9656 | return true; |
33bb52fb RS |
9657 | } |
9658 | ||
9659 | /* If the link uses a GOT, lay it out and work out its size. */ | |
9660 | ||
0a1b45a2 | 9661 | static bool |
33bb52fb RS |
9662 | mips_elf_lay_out_got (bfd *output_bfd, struct bfd_link_info *info) |
9663 | { | |
9664 | bfd *dynobj; | |
9665 | asection *s; | |
9666 | struct mips_got_info *g; | |
33bb52fb RS |
9667 | bfd_size_type loadable_size = 0; |
9668 | bfd_size_type page_gotno; | |
d7206569 | 9669 | bfd *ibfd; |
ab361d49 | 9670 | struct mips_elf_traverse_got_arg tga; |
33bb52fb RS |
9671 | struct mips_elf_link_hash_table *htab; |
9672 | ||
9673 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9674 | BFD_ASSERT (htab != NULL); |
9675 | ||
ce558b89 | 9676 | s = htab->root.sgot; |
f4416af6 | 9677 | if (s == NULL) |
0a1b45a2 | 9678 | return true; |
b49e97c9 | 9679 | |
33bb52fb | 9680 | dynobj = elf_hash_table (info)->dynobj; |
a8028dd0 RS |
9681 | g = htab->got_info; |
9682 | ||
861fb55a DJ |
9683 | /* Allocate room for the reserved entries. VxWorks always reserves |
9684 | 3 entries; other objects only reserve 2 entries. */ | |
cb22ccf4 | 9685 | BFD_ASSERT (g->assigned_low_gotno == 0); |
90c14f0c | 9686 | if (htab->root.target_os == is_vxworks) |
861fb55a DJ |
9687 | htab->reserved_gotno = 3; |
9688 | else | |
9689 | htab->reserved_gotno = 2; | |
9690 | g->local_gotno += htab->reserved_gotno; | |
cb22ccf4 | 9691 | g->assigned_low_gotno = htab->reserved_gotno; |
861fb55a | 9692 | |
6c42ddb9 RS |
9693 | /* Decide which symbols need to go in the global part of the GOT and |
9694 | count the number of reloc-only GOT symbols. */ | |
020d7251 | 9695 | mips_elf_link_hash_traverse (htab, mips_elf_count_got_symbols, info); |
f4416af6 | 9696 | |
13db6b44 | 9697 | if (!mips_elf_resolve_final_got_entries (info, g)) |
0a1b45a2 | 9698 | return false; |
13db6b44 | 9699 | |
33bb52fb RS |
9700 | /* Calculate the total loadable size of the output. That |
9701 | will give us the maximum number of GOT_PAGE entries | |
9702 | required. */ | |
c72f2fb2 | 9703 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
33bb52fb RS |
9704 | { |
9705 | asection *subsection; | |
5108fc1b | 9706 | |
d7206569 | 9707 | for (subsection = ibfd->sections; |
33bb52fb RS |
9708 | subsection; |
9709 | subsection = subsection->next) | |
9710 | { | |
9711 | if ((subsection->flags & SEC_ALLOC) == 0) | |
9712 | continue; | |
9713 | loadable_size += ((subsection->size + 0xf) | |
9714 | &~ (bfd_size_type) 0xf); | |
9715 | } | |
9716 | } | |
f4416af6 | 9717 | |
90c14f0c | 9718 | if (htab->root.target_os == is_vxworks) |
738e5348 | 9719 | /* There's no need to allocate page entries for VxWorks; R_MIPS*_GOT16 |
0a44bf69 RS |
9720 | relocations against local symbols evaluate to "G", and the EABI does |
9721 | not include R_MIPS_GOT_PAGE. */ | |
c224138d | 9722 | page_gotno = 0; |
0a44bf69 RS |
9723 | else |
9724 | /* Assume there are two loadable segments consisting of contiguous | |
9725 | sections. Is 5 enough? */ | |
c224138d RS |
9726 | page_gotno = (loadable_size >> 16) + 5; |
9727 | ||
13db6b44 | 9728 | /* Choose the smaller of the two page estimates; both are intended to be |
c224138d RS |
9729 | conservative. */ |
9730 | if (page_gotno > g->page_gotno) | |
9731 | page_gotno = g->page_gotno; | |
f4416af6 | 9732 | |
c224138d | 9733 | g->local_gotno += page_gotno; |
cb22ccf4 | 9734 | g->assigned_high_gotno = g->local_gotno - 1; |
ab361d49 | 9735 | |
ab361d49 RS |
9736 | s->size += g->local_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
9737 | s->size += g->global_gotno * MIPS_ELF_GOT_SIZE (output_bfd); | |
0f20cc35 DJ |
9738 | s->size += g->tls_gotno * MIPS_ELF_GOT_SIZE (output_bfd); |
9739 | ||
0a44bf69 RS |
9740 | /* VxWorks does not support multiple GOTs. It initializes $gp to |
9741 | __GOTT_BASE__[__GOTT_INDEX__], the value of which is set by the | |
9742 | dynamic loader. */ | |
90c14f0c L |
9743 | if (htab->root.target_os != is_vxworks |
9744 | && s->size > MIPS_ELF_GOT_MAX_SIZE (info)) | |
0f20cc35 | 9745 | { |
a8028dd0 | 9746 | if (!mips_elf_multi_got (output_bfd, info, s, page_gotno)) |
0a1b45a2 | 9747 | return false; |
0f20cc35 DJ |
9748 | } |
9749 | else | |
9750 | { | |
d7206569 RS |
9751 | /* Record that all bfds use G. This also has the effect of freeing |
9752 | the per-bfd GOTs, which we no longer need. */ | |
c72f2fb2 | 9753 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
0a1b45a2 | 9754 | if (mips_elf_bfd_got (ibfd, false)) |
d7206569 RS |
9755 | mips_elf_replace_bfd_got (ibfd, g); |
9756 | mips_elf_replace_bfd_got (output_bfd, g); | |
9757 | ||
33bb52fb | 9758 | /* Set up TLS entries. */ |
0f20cc35 | 9759 | g->tls_assigned_gotno = g->global_gotno + g->local_gotno; |
72e7511a RS |
9760 | tga.info = info; |
9761 | tga.g = g; | |
9762 | tga.value = MIPS_ELF_GOT_SIZE (output_bfd); | |
9763 | htab_traverse (g->got_entries, mips_elf_initialize_tls_index, &tga); | |
9764 | if (!tga.g) | |
0a1b45a2 | 9765 | return false; |
1fd20d70 RS |
9766 | BFD_ASSERT (g->tls_assigned_gotno |
9767 | == g->global_gotno + g->local_gotno + g->tls_gotno); | |
33bb52fb | 9768 | |
57093f5e | 9769 | /* Each VxWorks GOT entry needs an explicit relocation. */ |
90c14f0c | 9770 | if (htab->root.target_os == is_vxworks && bfd_link_pic (info)) |
57093f5e RS |
9771 | g->relocs += g->global_gotno + g->local_gotno - htab->reserved_gotno; |
9772 | ||
33bb52fb | 9773 | /* Allocate room for the TLS relocations. */ |
ab361d49 RS |
9774 | if (g->relocs) |
9775 | mips_elf_allocate_dynamic_relocations (dynobj, info, g->relocs); | |
0f20cc35 | 9776 | } |
b49e97c9 | 9777 | |
0a1b45a2 | 9778 | return true; |
b49e97c9 TS |
9779 | } |
9780 | ||
33bb52fb RS |
9781 | /* Estimate the size of the .MIPS.stubs section. */ |
9782 | ||
9783 | static void | |
9784 | mips_elf_estimate_stub_size (bfd *output_bfd, struct bfd_link_info *info) | |
9785 | { | |
9786 | struct mips_elf_link_hash_table *htab; | |
9787 | bfd_size_type dynsymcount; | |
9788 | ||
9789 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9790 | BFD_ASSERT (htab != NULL); |
9791 | ||
33bb52fb RS |
9792 | if (htab->lazy_stub_count == 0) |
9793 | return; | |
9794 | ||
9795 | /* IRIX rld assumes that a function stub isn't at the end of the .text | |
9796 | section, so add a dummy entry to the end. */ | |
9797 | htab->lazy_stub_count++; | |
9798 | ||
9799 | /* Get a worst-case estimate of the number of dynamic symbols needed. | |
9800 | At this point, dynsymcount does not account for section symbols | |
9801 | and count_section_dynsyms may overestimate the number that will | |
9802 | be needed. */ | |
9803 | dynsymcount = (elf_hash_table (info)->dynsymcount | |
9804 | + count_section_dynsyms (output_bfd, info)); | |
9805 | ||
1bbce132 MR |
9806 | /* Determine the size of one stub entry. There's no disadvantage |
9807 | from using microMIPS code here, so for the sake of pure-microMIPS | |
9808 | binaries we prefer it whenever there's any microMIPS code in | |
9809 | output produced at all. This has a benefit of stubs being | |
833794fc MR |
9810 | shorter by 4 bytes each too, unless in the insn32 mode. */ |
9811 | if (!MICROMIPS_P (output_bfd)) | |
1bbce132 MR |
9812 | htab->function_stub_size = (dynsymcount > 0x10000 |
9813 | ? MIPS_FUNCTION_STUB_BIG_SIZE | |
9814 | : MIPS_FUNCTION_STUB_NORMAL_SIZE); | |
833794fc MR |
9815 | else if (htab->insn32) |
9816 | htab->function_stub_size = (dynsymcount > 0x10000 | |
9817 | ? MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE | |
9818 | : MICROMIPS_INSN32_FUNCTION_STUB_NORMAL_SIZE); | |
9819 | else | |
9820 | htab->function_stub_size = (dynsymcount > 0x10000 | |
9821 | ? MICROMIPS_FUNCTION_STUB_BIG_SIZE | |
9822 | : MICROMIPS_FUNCTION_STUB_NORMAL_SIZE); | |
33bb52fb RS |
9823 | |
9824 | htab->sstubs->size = htab->lazy_stub_count * htab->function_stub_size; | |
9825 | } | |
9826 | ||
1bbce132 MR |
9827 | /* A mips_elf_link_hash_traverse callback for which DATA points to a |
9828 | mips_htab_traverse_info. If H needs a traditional MIPS lazy-binding | |
9829 | stub, allocate an entry in the stubs section. */ | |
33bb52fb | 9830 | |
0a1b45a2 | 9831 | static bool |
af924177 | 9832 | mips_elf_allocate_lazy_stub (struct mips_elf_link_hash_entry *h, void *data) |
33bb52fb | 9833 | { |
1bbce132 | 9834 | struct mips_htab_traverse_info *hti = data; |
33bb52fb | 9835 | struct mips_elf_link_hash_table *htab; |
1bbce132 MR |
9836 | struct bfd_link_info *info; |
9837 | bfd *output_bfd; | |
9838 | ||
9839 | info = hti->info; | |
9840 | output_bfd = hti->output_bfd; | |
9841 | htab = mips_elf_hash_table (info); | |
9842 | BFD_ASSERT (htab != NULL); | |
33bb52fb | 9843 | |
33bb52fb RS |
9844 | if (h->needs_lazy_stub) |
9845 | { | |
0a1b45a2 | 9846 | bool micromips_p = MICROMIPS_P (output_bfd); |
1bbce132 MR |
9847 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; |
9848 | bfd_vma isa_bit = micromips_p; | |
9849 | ||
9850 | BFD_ASSERT (htab->root.dynobj != NULL); | |
9851 | if (h->root.plt.plist == NULL) | |
9852 | h->root.plt.plist = mips_elf_make_plt_record (htab->sstubs->owner); | |
9853 | if (h->root.plt.plist == NULL) | |
9854 | { | |
0a1b45a2 AM |
9855 | hti->error = true; |
9856 | return false; | |
1bbce132 | 9857 | } |
33bb52fb | 9858 | h->root.root.u.def.section = htab->sstubs; |
1bbce132 MR |
9859 | h->root.root.u.def.value = htab->sstubs->size + isa_bit; |
9860 | h->root.plt.plist->stub_offset = htab->sstubs->size; | |
9861 | h->root.other = other; | |
33bb52fb RS |
9862 | htab->sstubs->size += htab->function_stub_size; |
9863 | } | |
0a1b45a2 | 9864 | return true; |
33bb52fb RS |
9865 | } |
9866 | ||
9867 | /* Allocate offsets in the stubs section to each symbol that needs one. | |
9868 | Set the final size of the .MIPS.stub section. */ | |
9869 | ||
0a1b45a2 | 9870 | static bool |
33bb52fb RS |
9871 | mips_elf_lay_out_lazy_stubs (struct bfd_link_info *info) |
9872 | { | |
1bbce132 | 9873 | bfd *output_bfd = info->output_bfd; |
0a1b45a2 | 9874 | bool micromips_p = MICROMIPS_P (output_bfd); |
1bbce132 MR |
9875 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; |
9876 | bfd_vma isa_bit = micromips_p; | |
33bb52fb | 9877 | struct mips_elf_link_hash_table *htab; |
1bbce132 MR |
9878 | struct mips_htab_traverse_info hti; |
9879 | struct elf_link_hash_entry *h; | |
9880 | bfd *dynobj; | |
33bb52fb RS |
9881 | |
9882 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
9883 | BFD_ASSERT (htab != NULL); |
9884 | ||
33bb52fb | 9885 | if (htab->lazy_stub_count == 0) |
0a1b45a2 | 9886 | return true; |
33bb52fb RS |
9887 | |
9888 | htab->sstubs->size = 0; | |
1bbce132 MR |
9889 | hti.info = info; |
9890 | hti.output_bfd = output_bfd; | |
0a1b45a2 | 9891 | hti.error = false; |
1bbce132 MR |
9892 | mips_elf_link_hash_traverse (htab, mips_elf_allocate_lazy_stub, &hti); |
9893 | if (hti.error) | |
0a1b45a2 | 9894 | return false; |
33bb52fb RS |
9895 | htab->sstubs->size += htab->function_stub_size; |
9896 | BFD_ASSERT (htab->sstubs->size | |
9897 | == htab->lazy_stub_count * htab->function_stub_size); | |
1bbce132 MR |
9898 | |
9899 | dynobj = elf_hash_table (info)->dynobj; | |
9900 | BFD_ASSERT (dynobj != NULL); | |
9901 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->sstubs, "_MIPS_STUBS_"); | |
9902 | if (h == NULL) | |
0a1b45a2 | 9903 | return false; |
1bbce132 MR |
9904 | h->root.u.def.value = isa_bit; |
9905 | h->other = other; | |
9906 | h->type = STT_FUNC; | |
9907 | ||
0a1b45a2 | 9908 | return true; |
1bbce132 MR |
9909 | } |
9910 | ||
9911 | /* A mips_elf_link_hash_traverse callback for which DATA points to a | |
9912 | bfd_link_info. If H uses the address of a PLT entry as the value | |
9913 | of the symbol, then set the entry in the symbol table now. Prefer | |
9914 | a standard MIPS PLT entry. */ | |
9915 | ||
0a1b45a2 | 9916 | static bool |
1bbce132 MR |
9917 | mips_elf_set_plt_sym_value (struct mips_elf_link_hash_entry *h, void *data) |
9918 | { | |
9919 | struct bfd_link_info *info = data; | |
0a1b45a2 | 9920 | bool micromips_p = MICROMIPS_P (info->output_bfd); |
1bbce132 MR |
9921 | struct mips_elf_link_hash_table *htab; |
9922 | unsigned int other; | |
9923 | bfd_vma isa_bit; | |
9924 | bfd_vma val; | |
9925 | ||
9926 | htab = mips_elf_hash_table (info); | |
9927 | BFD_ASSERT (htab != NULL); | |
9928 | ||
9929 | if (h->use_plt_entry) | |
9930 | { | |
9931 | BFD_ASSERT (h->root.plt.plist != NULL); | |
9932 | BFD_ASSERT (h->root.plt.plist->mips_offset != MINUS_ONE | |
9933 | || h->root.plt.plist->comp_offset != MINUS_ONE); | |
9934 | ||
9935 | val = htab->plt_header_size; | |
9936 | if (h->root.plt.plist->mips_offset != MINUS_ONE) | |
9937 | { | |
9938 | isa_bit = 0; | |
9939 | val += h->root.plt.plist->mips_offset; | |
9940 | other = 0; | |
9941 | } | |
9942 | else | |
9943 | { | |
9944 | isa_bit = 1; | |
9945 | val += htab->plt_mips_offset + h->root.plt.plist->comp_offset; | |
9946 | other = micromips_p ? STO_MICROMIPS : STO_MIPS16; | |
9947 | } | |
9948 | val += isa_bit; | |
9949 | /* For VxWorks, point at the PLT load stub rather than the lazy | |
07d6d2b8 AM |
9950 | resolution stub; this stub will become the canonical function |
9951 | address. */ | |
90c14f0c | 9952 | if (htab->root.target_os == is_vxworks) |
1bbce132 MR |
9953 | val += 8; |
9954 | ||
ce558b89 | 9955 | h->root.root.u.def.section = htab->root.splt; |
1bbce132 MR |
9956 | h->root.root.u.def.value = val; |
9957 | h->root.other = other; | |
9958 | } | |
9959 | ||
0a1b45a2 | 9960 | return true; |
33bb52fb RS |
9961 | } |
9962 | ||
b49e97c9 TS |
9963 | /* Set the sizes of the dynamic sections. */ |
9964 | ||
0a1b45a2 | 9965 | bool |
9719ad41 RS |
9966 | _bfd_mips_elf_size_dynamic_sections (bfd *output_bfd, |
9967 | struct bfd_link_info *info) | |
b49e97c9 TS |
9968 | { |
9969 | bfd *dynobj; | |
861fb55a | 9970 | asection *s, *sreldyn; |
0a1b45a2 | 9971 | bool reltext; |
0a44bf69 | 9972 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 9973 | |
0a44bf69 | 9974 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 9975 | BFD_ASSERT (htab != NULL); |
b49e97c9 TS |
9976 | dynobj = elf_hash_table (info)->dynobj; |
9977 | BFD_ASSERT (dynobj != NULL); | |
9978 | ||
9979 | if (elf_hash_table (info)->dynamic_sections_created) | |
9980 | { | |
9981 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9982 | if (bfd_link_executable (info) && !info->nointerp) |
b49e97c9 | 9983 | { |
3d4d4302 | 9984 | s = bfd_get_linker_section (dynobj, ".interp"); |
b49e97c9 | 9985 | BFD_ASSERT (s != NULL); |
eea6121a | 9986 | s->size |
b49e97c9 TS |
9987 | = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1; |
9988 | s->contents | |
9989 | = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd); | |
9990 | } | |
861fb55a | 9991 | |
1bbce132 | 9992 | /* Figure out the size of the PLT header if we know that we |
07d6d2b8 AM |
9993 | are using it. For the sake of cache alignment always use |
9994 | a standard header whenever any standard entries are present | |
9995 | even if microMIPS entries are present as well. This also | |
9996 | lets the microMIPS header rely on the value of $v0 only set | |
9997 | by microMIPS entries, for a small size reduction. | |
1bbce132 | 9998 | |
07d6d2b8 AM |
9999 | Set symbol table entry values for symbols that use the |
10000 | address of their PLT entry now that we can calculate it. | |
1bbce132 | 10001 | |
07d6d2b8 AM |
10002 | Also create the _PROCEDURE_LINKAGE_TABLE_ symbol if we |
10003 | haven't already in _bfd_elf_create_dynamic_sections. */ | |
ce558b89 | 10004 | if (htab->root.splt && htab->plt_mips_offset + htab->plt_comp_offset != 0) |
861fb55a | 10005 | { |
0a1b45a2 | 10006 | bool micromips_p = (MICROMIPS_P (output_bfd) |
1bbce132 MR |
10007 | && !htab->plt_mips_offset); |
10008 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; | |
10009 | bfd_vma isa_bit = micromips_p; | |
861fb55a | 10010 | struct elf_link_hash_entry *h; |
1bbce132 | 10011 | bfd_vma size; |
861fb55a DJ |
10012 | |
10013 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
ce558b89 AM |
10014 | BFD_ASSERT (htab->root.sgotplt->size == 0); |
10015 | BFD_ASSERT (htab->root.splt->size == 0); | |
1bbce132 | 10016 | |
90c14f0c | 10017 | if (htab->root.target_os == is_vxworks && bfd_link_pic (info)) |
1bbce132 | 10018 | size = 4 * ARRAY_SIZE (mips_vxworks_shared_plt0_entry); |
90c14f0c | 10019 | else if (htab->root.target_os == is_vxworks) |
1bbce132 MR |
10020 | size = 4 * ARRAY_SIZE (mips_vxworks_exec_plt0_entry); |
10021 | else if (ABI_64_P (output_bfd)) | |
10022 | size = 4 * ARRAY_SIZE (mips_n64_exec_plt0_entry); | |
10023 | else if (ABI_N32_P (output_bfd)) | |
10024 | size = 4 * ARRAY_SIZE (mips_n32_exec_plt0_entry); | |
10025 | else if (!micromips_p) | |
10026 | size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry); | |
833794fc MR |
10027 | else if (htab->insn32) |
10028 | size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry); | |
1bbce132 MR |
10029 | else |
10030 | size = 2 * ARRAY_SIZE (micromips_o32_exec_plt0_entry); | |
861fb55a | 10031 | |
1bbce132 MR |
10032 | htab->plt_header_is_comp = micromips_p; |
10033 | htab->plt_header_size = size; | |
ce558b89 AM |
10034 | htab->root.splt->size = (size |
10035 | + htab->plt_mips_offset | |
10036 | + htab->plt_comp_offset); | |
10037 | htab->root.sgotplt->size = (htab->plt_got_index | |
10038 | * MIPS_ELF_GOT_SIZE (dynobj)); | |
1bbce132 MR |
10039 | |
10040 | mips_elf_link_hash_traverse (htab, mips_elf_set_plt_sym_value, info); | |
10041 | ||
10042 | if (htab->root.hplt == NULL) | |
10043 | { | |
ce558b89 | 10044 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->root.splt, |
1bbce132 MR |
10045 | "_PROCEDURE_LINKAGE_TABLE_"); |
10046 | htab->root.hplt = h; | |
10047 | if (h == NULL) | |
0a1b45a2 | 10048 | return false; |
1bbce132 MR |
10049 | } |
10050 | ||
10051 | h = htab->root.hplt; | |
10052 | h->root.u.def.value = isa_bit; | |
10053 | h->other = other; | |
861fb55a DJ |
10054 | h->type = STT_FUNC; |
10055 | } | |
10056 | } | |
4e41d0d7 | 10057 | |
9a59ad6b | 10058 | /* Allocate space for global sym dynamic relocs. */ |
2c3fc389 | 10059 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); |
9a59ad6b | 10060 | |
33bb52fb RS |
10061 | mips_elf_estimate_stub_size (output_bfd, info); |
10062 | ||
10063 | if (!mips_elf_lay_out_got (output_bfd, info)) | |
0a1b45a2 | 10064 | return false; |
33bb52fb RS |
10065 | |
10066 | mips_elf_lay_out_lazy_stubs (info); | |
10067 | ||
b49e97c9 TS |
10068 | /* The check_relocs and adjust_dynamic_symbol entry points have |
10069 | determined the sizes of the various dynamic sections. Allocate | |
10070 | memory for them. */ | |
0a1b45a2 | 10071 | reltext = false; |
b49e97c9 TS |
10072 | for (s = dynobj->sections; s != NULL; s = s->next) |
10073 | { | |
10074 | const char *name; | |
b49e97c9 TS |
10075 | |
10076 | /* It's OK to base decisions on the section name, because none | |
10077 | of the dynobj section names depend upon the input files. */ | |
fd361982 | 10078 | name = bfd_section_name (s); |
b49e97c9 TS |
10079 | |
10080 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10081 | continue; | |
10082 | ||
08dedd66 | 10083 | if (startswith (name, ".rel")) |
b49e97c9 | 10084 | { |
c456f082 | 10085 | if (s->size != 0) |
b49e97c9 TS |
10086 | { |
10087 | const char *outname; | |
10088 | asection *target; | |
10089 | ||
10090 | /* If this relocation section applies to a read only | |
07d6d2b8 AM |
10091 | section, then we probably need a DT_TEXTREL entry. |
10092 | If the relocation section is .rel(a).dyn, we always | |
10093 | assert a DT_TEXTREL entry rather than testing whether | |
10094 | there exists a relocation to a read only section or | |
10095 | not. */ | |
fd361982 | 10096 | outname = bfd_section_name (s->output_section); |
b49e97c9 TS |
10097 | target = bfd_get_section_by_name (output_bfd, outname + 4); |
10098 | if ((target != NULL | |
10099 | && (target->flags & SEC_READONLY) != 0 | |
10100 | && (target->flags & SEC_ALLOC) != 0) | |
0a44bf69 | 10101 | || strcmp (outname, MIPS_ELF_REL_DYN_NAME (info)) == 0) |
0a1b45a2 | 10102 | reltext = true; |
b49e97c9 TS |
10103 | |
10104 | /* We use the reloc_count field as a counter if we need | |
10105 | to copy relocs into the output file. */ | |
0a44bf69 | 10106 | if (strcmp (name, MIPS_ELF_REL_DYN_NAME (info)) != 0) |
b49e97c9 | 10107 | s->reloc_count = 0; |
f4416af6 AO |
10108 | |
10109 | /* If combreloc is enabled, elf_link_sort_relocs() will | |
10110 | sort relocations, but in a different way than we do, | |
10111 | and before we're done creating relocations. Also, it | |
10112 | will move them around between input sections' | |
10113 | relocation's contents, so our sorting would be | |
10114 | broken, so don't let it run. */ | |
10115 | info->combreloc = 0; | |
b49e97c9 TS |
10116 | } |
10117 | } | |
0e1862bb | 10118 | else if (bfd_link_executable (info) |
b49e97c9 | 10119 | && ! mips_elf_hash_table (info)->use_rld_obj_head |
08dedd66 | 10120 | && startswith (name, ".rld_map")) |
b49e97c9 | 10121 | { |
5108fc1b | 10122 | /* We add a room for __rld_map. It will be filled in by the |
b49e97c9 | 10123 | rtld to contain a pointer to the _r_debug structure. */ |
b4082c70 | 10124 | s->size += MIPS_ELF_RLD_MAP_SIZE (output_bfd); |
b49e97c9 TS |
10125 | } |
10126 | else if (SGI_COMPAT (output_bfd) | |
08dedd66 | 10127 | && startswith (name, ".compact_rel")) |
eea6121a | 10128 | s->size += mips_elf_hash_table (info)->compact_rel_size; |
ce558b89 | 10129 | else if (s == htab->root.splt) |
861fb55a DJ |
10130 | { |
10131 | /* If the last PLT entry has a branch delay slot, allocate | |
6d30f5b2 NC |
10132 | room for an extra nop to fill the delay slot. This is |
10133 | for CPUs without load interlocking. */ | |
10134 | if (! LOAD_INTERLOCKS_P (output_bfd) | |
90c14f0c L |
10135 | && htab->root.target_os != is_vxworks |
10136 | && s->size > 0) | |
861fb55a DJ |
10137 | s->size += 4; |
10138 | } | |
08dedd66 | 10139 | else if (! startswith (name, ".init") |
ce558b89 AM |
10140 | && s != htab->root.sgot |
10141 | && s != htab->root.sgotplt | |
861fb55a | 10142 | && s != htab->sstubs |
5474d94f AM |
10143 | && s != htab->root.sdynbss |
10144 | && s != htab->root.sdynrelro) | |
b49e97c9 TS |
10145 | { |
10146 | /* It's not one of our sections, so don't allocate space. */ | |
10147 | continue; | |
10148 | } | |
10149 | ||
c456f082 | 10150 | if (s->size == 0) |
b49e97c9 | 10151 | { |
8423293d | 10152 | s->flags |= SEC_EXCLUDE; |
b49e97c9 TS |
10153 | continue; |
10154 | } | |
10155 | ||
c456f082 AM |
10156 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
10157 | continue; | |
10158 | ||
b49e97c9 | 10159 | /* Allocate memory for the section contents. */ |
eea6121a | 10160 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 10161 | if (s->contents == NULL) |
b49e97c9 TS |
10162 | { |
10163 | bfd_set_error (bfd_error_no_memory); | |
0a1b45a2 | 10164 | return false; |
b49e97c9 TS |
10165 | } |
10166 | } | |
10167 | ||
10168 | if (elf_hash_table (info)->dynamic_sections_created) | |
10169 | { | |
10170 | /* Add some entries to the .dynamic section. We fill in the | |
10171 | values later, in _bfd_mips_elf_finish_dynamic_sections, but we | |
10172 | must add the entries now so that we get the correct size for | |
5750dcec | 10173 | the .dynamic section. */ |
af5978fb RS |
10174 | |
10175 | /* SGI object has the equivalence of DT_DEBUG in the | |
5750dcec | 10176 | DT_MIPS_RLD_MAP entry. This must come first because glibc |
6e6be592 MR |
10177 | only fills in DT_MIPS_RLD_MAP (not DT_DEBUG) and some tools |
10178 | may only look at the first one they see. */ | |
0e1862bb | 10179 | if (!bfd_link_pic (info) |
af5978fb | 10180 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0)) |
0a1b45a2 | 10181 | return false; |
b49e97c9 | 10182 | |
0e1862bb | 10183 | if (bfd_link_executable (info) |
a5499fa4 | 10184 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP_REL, 0)) |
0a1b45a2 | 10185 | return false; |
a5499fa4 | 10186 | |
5750dcec DJ |
10187 | /* The DT_DEBUG entry may be filled in by the dynamic linker and |
10188 | used by the debugger. */ | |
0e1862bb | 10189 | if (bfd_link_executable (info) |
5750dcec DJ |
10190 | && !SGI_COMPAT (output_bfd) |
10191 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) | |
0a1b45a2 | 10192 | return false; |
5750dcec | 10193 | |
90c14f0c L |
10194 | if (reltext |
10195 | && (SGI_COMPAT (output_bfd) | |
10196 | || htab->root.target_os == is_vxworks)) | |
b49e97c9 TS |
10197 | info->flags |= DF_TEXTREL; |
10198 | ||
10199 | if ((info->flags & DF_TEXTREL) != 0) | |
10200 | { | |
10201 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) | |
0a1b45a2 | 10202 | return false; |
943284cc DJ |
10203 | |
10204 | /* Clear the DF_TEXTREL flag. It will be set again if we | |
10205 | write out an actual text relocation; we may not, because | |
10206 | at this point we do not know whether e.g. any .eh_frame | |
10207 | absolute relocations have been converted to PC-relative. */ | |
10208 | info->flags &= ~DF_TEXTREL; | |
b49e97c9 TS |
10209 | } |
10210 | ||
10211 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) | |
0a1b45a2 | 10212 | return false; |
b49e97c9 | 10213 | |
0a1b45a2 | 10214 | sreldyn = mips_elf_rel_dyn_section (info, false); |
90c14f0c | 10215 | if (htab->root.target_os == is_vxworks) |
b49e97c9 | 10216 | { |
0a44bf69 RS |
10217 | /* VxWorks uses .rela.dyn instead of .rel.dyn. It does not |
10218 | use any of the DT_MIPS_* tags. */ | |
861fb55a | 10219 | if (sreldyn && sreldyn->size > 0) |
0a44bf69 RS |
10220 | { |
10221 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELA, 0)) | |
0a1b45a2 | 10222 | return false; |
b49e97c9 | 10223 | |
0a44bf69 | 10224 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELASZ, 0)) |
0a1b45a2 | 10225 | return false; |
b49e97c9 | 10226 | |
0a44bf69 | 10227 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELAENT, 0)) |
0a1b45a2 | 10228 | return false; |
0a44bf69 | 10229 | } |
b49e97c9 | 10230 | } |
0a44bf69 RS |
10231 | else |
10232 | { | |
db841b6f MR |
10233 | if (sreldyn && sreldyn->size > 0 |
10234 | && !bfd_is_abs_section (sreldyn->output_section)) | |
0a44bf69 RS |
10235 | { |
10236 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) | |
0a1b45a2 | 10237 | return false; |
b49e97c9 | 10238 | |
0a44bf69 | 10239 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) |
0a1b45a2 | 10240 | return false; |
b49e97c9 | 10241 | |
0a44bf69 | 10242 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) |
0a1b45a2 | 10243 | return false; |
0a44bf69 | 10244 | } |
b49e97c9 | 10245 | |
0a44bf69 | 10246 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0)) |
0a1b45a2 | 10247 | return false; |
b49e97c9 | 10248 | |
0a44bf69 | 10249 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0)) |
0a1b45a2 | 10250 | return false; |
b49e97c9 | 10251 | |
0a44bf69 | 10252 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0)) |
0a1b45a2 | 10253 | return false; |
b49e97c9 | 10254 | |
0a44bf69 | 10255 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0)) |
0a1b45a2 | 10256 | return false; |
b49e97c9 | 10257 | |
0a44bf69 | 10258 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0)) |
0a1b45a2 | 10259 | return false; |
b49e97c9 | 10260 | |
0a44bf69 | 10261 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0)) |
0a1b45a2 | 10262 | return false; |
b49e97c9 | 10263 | |
0a44bf69 | 10264 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0)) |
0a1b45a2 | 10265 | return false; |
0a44bf69 | 10266 | |
f16a9783 MS |
10267 | if (info->emit_gnu_hash |
10268 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_XHASH, 0)) | |
0a1b45a2 | 10269 | return false; |
f16a9783 | 10270 | |
0a44bf69 RS |
10271 | if (IRIX_COMPAT (dynobj) == ict_irix5 |
10272 | && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0)) | |
0a1b45a2 | 10273 | return false; |
0a44bf69 RS |
10274 | |
10275 | if (IRIX_COMPAT (dynobj) == ict_irix6 | |
10276 | && (bfd_get_section_by_name | |
af0edeb8 | 10277 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj))) |
0a44bf69 | 10278 | && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0)) |
0a1b45a2 | 10279 | return false; |
0a44bf69 | 10280 | } |
ce558b89 | 10281 | if (htab->root.splt->size > 0) |
861fb55a DJ |
10282 | { |
10283 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTREL, 0)) | |
0a1b45a2 | 10284 | return false; |
861fb55a DJ |
10285 | |
10286 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_JMPREL, 0)) | |
0a1b45a2 | 10287 | return false; |
861fb55a DJ |
10288 | |
10289 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTRELSZ, 0)) | |
0a1b45a2 | 10290 | return false; |
861fb55a DJ |
10291 | |
10292 | if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_PLTGOT, 0)) | |
0a1b45a2 | 10293 | return false; |
861fb55a | 10294 | } |
90c14f0c | 10295 | if (htab->root.target_os == is_vxworks |
7a2b07ff | 10296 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) |
0a1b45a2 | 10297 | return false; |
b49e97c9 TS |
10298 | } |
10299 | ||
0a1b45a2 | 10300 | return true; |
b49e97c9 TS |
10301 | } |
10302 | \f | |
81d43bff RS |
10303 | /* REL is a relocation in INPUT_BFD that is being copied to OUTPUT_BFD. |
10304 | Adjust its R_ADDEND field so that it is correct for the output file. | |
10305 | LOCAL_SYMS and LOCAL_SECTIONS are arrays of INPUT_BFD's local symbols | |
10306 | and sections respectively; both use symbol indexes. */ | |
10307 | ||
10308 | static void | |
10309 | mips_elf_adjust_addend (bfd *output_bfd, struct bfd_link_info *info, | |
10310 | bfd *input_bfd, Elf_Internal_Sym *local_syms, | |
10311 | asection **local_sections, Elf_Internal_Rela *rel) | |
10312 | { | |
10313 | unsigned int r_type, r_symndx; | |
10314 | Elf_Internal_Sym *sym; | |
10315 | asection *sec; | |
10316 | ||
020d7251 | 10317 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
81d43bff RS |
10318 | { |
10319 | r_type = ELF_R_TYPE (output_bfd, rel->r_info); | |
df58fc94 | 10320 | if (gprel16_reloc_p (r_type) |
81d43bff | 10321 | || r_type == R_MIPS_GPREL32 |
df58fc94 | 10322 | || literal_reloc_p (r_type)) |
81d43bff RS |
10323 | { |
10324 | rel->r_addend += _bfd_get_gp_value (input_bfd); | |
10325 | rel->r_addend -= _bfd_get_gp_value (output_bfd); | |
10326 | } | |
10327 | ||
10328 | r_symndx = ELF_R_SYM (output_bfd, rel->r_info); | |
10329 | sym = local_syms + r_symndx; | |
10330 | ||
10331 | /* Adjust REL's addend to account for section merging. */ | |
0e1862bb | 10332 | if (!bfd_link_relocatable (info)) |
81d43bff RS |
10333 | { |
10334 | sec = local_sections[r_symndx]; | |
10335 | _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
10336 | } | |
10337 | ||
10338 | /* This would normally be done by the rela_normal code in elflink.c. */ | |
10339 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
10340 | rel->r_addend += local_sections[r_symndx]->output_offset; | |
10341 | } | |
10342 | } | |
10343 | ||
545fd46b MR |
10344 | /* Handle relocations against symbols from removed linkonce sections, |
10345 | or sections discarded by a linker script. We use this wrapper around | |
10346 | RELOC_AGAINST_DISCARDED_SECTION to handle triplets of compound relocs | |
10347 | on 64-bit ELF targets. In this case for any relocation handled, which | |
10348 | always be the first in a triplet, the remaining two have to be processed | |
10349 | together with the first, even if they are R_MIPS_NONE. It is the symbol | |
10350 | index referred by the first reloc that applies to all the three and the | |
10351 | remaining two never refer to an object symbol. And it is the final | |
10352 | relocation (the last non-null one) that determines the output field of | |
10353 | the whole relocation so retrieve the corresponding howto structure for | |
10354 | the relocatable field to be cleared by RELOC_AGAINST_DISCARDED_SECTION. | |
10355 | ||
10356 | Note that RELOC_AGAINST_DISCARDED_SECTION is a macro that uses "continue" | |
10357 | and therefore requires to be pasted in a loop. It also defines a block | |
10358 | and does not protect any of its arguments, hence the extra brackets. */ | |
10359 | ||
10360 | static void | |
10361 | mips_reloc_against_discarded_section (bfd *output_bfd, | |
10362 | struct bfd_link_info *info, | |
10363 | bfd *input_bfd, asection *input_section, | |
10364 | Elf_Internal_Rela **rel, | |
10365 | const Elf_Internal_Rela **relend, | |
0a1b45a2 | 10366 | bool rel_reloc, |
545fd46b MR |
10367 | reloc_howto_type *howto, |
10368 | bfd_byte *contents) | |
10369 | { | |
10370 | const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); | |
10371 | int count = bed->s->int_rels_per_ext_rel; | |
10372 | unsigned int r_type; | |
10373 | int i; | |
10374 | ||
10375 | for (i = count - 1; i > 0; i--) | |
10376 | { | |
10377 | r_type = ELF_R_TYPE (output_bfd, (*rel)[i].r_info); | |
10378 | if (r_type != R_MIPS_NONE) | |
10379 | { | |
10380 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); | |
10381 | break; | |
10382 | } | |
10383 | } | |
10384 | do | |
10385 | { | |
10386 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
10387 | (*rel), count, (*relend), | |
10388 | howto, i, contents); | |
10389 | } | |
10390 | while (0); | |
10391 | } | |
10392 | ||
b49e97c9 TS |
10393 | /* Relocate a MIPS ELF section. */ |
10394 | ||
0f684201 | 10395 | int |
9719ad41 RS |
10396 | _bfd_mips_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
10397 | bfd *input_bfd, asection *input_section, | |
10398 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
10399 | Elf_Internal_Sym *local_syms, | |
10400 | asection **local_sections) | |
b49e97c9 TS |
10401 | { |
10402 | Elf_Internal_Rela *rel; | |
10403 | const Elf_Internal_Rela *relend; | |
10404 | bfd_vma addend = 0; | |
0a1b45a2 | 10405 | bool use_saved_addend_p = false; |
b49e97c9 | 10406 | |
056bafd4 | 10407 | relend = relocs + input_section->reloc_count; |
b49e97c9 TS |
10408 | for (rel = relocs; rel < relend; ++rel) |
10409 | { | |
10410 | const char *name; | |
c9adbffe | 10411 | bfd_vma value = 0; |
b49e97c9 | 10412 | reloc_howto_type *howto; |
0a1b45a2 | 10413 | bool cross_mode_jump_p = false; |
b34976b6 | 10414 | /* TRUE if the relocation is a RELA relocation, rather than a |
07d6d2b8 | 10415 | REL relocation. */ |
0a1b45a2 | 10416 | bool rela_relocation_p = true; |
b49e97c9 | 10417 | unsigned int r_type = ELF_R_TYPE (output_bfd, rel->r_info); |
9719ad41 | 10418 | const char *msg; |
ab96bf03 AM |
10419 | unsigned long r_symndx; |
10420 | asection *sec; | |
749b8d9d L |
10421 | Elf_Internal_Shdr *symtab_hdr; |
10422 | struct elf_link_hash_entry *h; | |
0a1b45a2 | 10423 | bool rel_reloc; |
b49e97c9 | 10424 | |
d4730f92 BS |
10425 | rel_reloc = (NEWABI_P (input_bfd) |
10426 | && mips_elf_rel_relocation_p (input_bfd, input_section, | |
10427 | relocs, rel)); | |
b49e97c9 | 10428 | /* Find the relocation howto for this relocation. */ |
d4730f92 | 10429 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, r_type, !rel_reloc); |
ab96bf03 AM |
10430 | |
10431 | r_symndx = ELF_R_SYM (input_bfd, rel->r_info); | |
749b8d9d | 10432 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
020d7251 | 10433 | if (mips_elf_local_relocation_p (input_bfd, rel, local_sections)) |
749b8d9d L |
10434 | { |
10435 | sec = local_sections[r_symndx]; | |
10436 | h = NULL; | |
10437 | } | |
ab96bf03 AM |
10438 | else |
10439 | { | |
ab96bf03 | 10440 | unsigned long extsymoff; |
ab96bf03 | 10441 | |
ab96bf03 AM |
10442 | extsymoff = 0; |
10443 | if (!elf_bad_symtab (input_bfd)) | |
10444 | extsymoff = symtab_hdr->sh_info; | |
10445 | h = elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; | |
10446 | while (h->root.type == bfd_link_hash_indirect | |
10447 | || h->root.type == bfd_link_hash_warning) | |
10448 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10449 | ||
10450 | sec = NULL; | |
10451 | if (h->root.type == bfd_link_hash_defined | |
10452 | || h->root.type == bfd_link_hash_defweak) | |
10453 | sec = h->root.u.def.section; | |
10454 | } | |
10455 | ||
dbaa2011 | 10456 | if (sec != NULL && discarded_section (sec)) |
545fd46b MR |
10457 | { |
10458 | mips_reloc_against_discarded_section (output_bfd, info, input_bfd, | |
10459 | input_section, &rel, &relend, | |
10460 | rel_reloc, howto, contents); | |
10461 | continue; | |
10462 | } | |
ab96bf03 | 10463 | |
4a14403c | 10464 | if (r_type == R_MIPS_64 && ! NEWABI_P (input_bfd)) |
b49e97c9 TS |
10465 | { |
10466 | /* Some 32-bit code uses R_MIPS_64. In particular, people use | |
10467 | 64-bit code, but make sure all their addresses are in the | |
10468 | lowermost or uppermost 32-bit section of the 64-bit address | |
10469 | space. Thus, when they use an R_MIPS_64 they mean what is | |
10470 | usually meant by R_MIPS_32, with the exception that the | |
10471 | stored value is sign-extended to 64 bits. */ | |
0a1b45a2 | 10472 | howto = MIPS_ELF_RTYPE_TO_HOWTO (input_bfd, R_MIPS_32, false); |
b49e97c9 TS |
10473 | |
10474 | /* On big-endian systems, we need to lie about the position | |
10475 | of the reloc. */ | |
10476 | if (bfd_big_endian (input_bfd)) | |
10477 | rel->r_offset += 4; | |
10478 | } | |
b49e97c9 TS |
10479 | |
10480 | if (!use_saved_addend_p) | |
10481 | { | |
b49e97c9 TS |
10482 | /* If these relocations were originally of the REL variety, |
10483 | we must pull the addend out of the field that will be | |
10484 | relocated. Otherwise, we simply use the contents of the | |
c224138d RS |
10485 | RELA relocation. */ |
10486 | if (mips_elf_rel_relocation_p (input_bfd, input_section, | |
10487 | relocs, rel)) | |
b49e97c9 | 10488 | { |
0a1b45a2 | 10489 | rela_relocation_p = false; |
73425813 AM |
10490 | addend = mips_elf_read_rel_addend (input_bfd, input_section, |
10491 | rel, howto, contents); | |
738e5348 RS |
10492 | if (hi16_reloc_p (r_type) |
10493 | || (got16_reloc_p (r_type) | |
b49e97c9 | 10494 | && mips_elf_local_relocation_p (input_bfd, rel, |
020d7251 | 10495 | local_sections))) |
b49e97c9 | 10496 | { |
73425813 AM |
10497 | if (!mips_elf_add_lo16_rel_addend (input_bfd, input_section, |
10498 | rel, relend, | |
c224138d | 10499 | contents, &addend)) |
749b8d9d | 10500 | { |
749b8d9d L |
10501 | if (h) |
10502 | name = h->root.root.string; | |
10503 | else | |
10504 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
10505 | local_syms + r_symndx, | |
10506 | sec); | |
4eca0228 | 10507 | _bfd_error_handler |
695344c0 | 10508 | /* xgettext:c-format */ |
2c1c9679 | 10509 | (_("%pB: can't find matching LO16 reloc against `%s'" |
2dcf00ce | 10510 | " for %s at %#" PRIx64 " in section `%pA'"), |
c08bb8dd | 10511 | input_bfd, name, |
2dcf00ce | 10512 | howto->name, (uint64_t) rel->r_offset, input_section); |
749b8d9d | 10513 | } |
b49e97c9 | 10514 | } |
30ac9238 RS |
10515 | else |
10516 | addend <<= howto->rightshift; | |
b49e97c9 TS |
10517 | } |
10518 | else | |
10519 | addend = rel->r_addend; | |
81d43bff RS |
10520 | mips_elf_adjust_addend (output_bfd, info, input_bfd, |
10521 | local_syms, local_sections, rel); | |
b49e97c9 TS |
10522 | } |
10523 | ||
0e1862bb | 10524 | if (bfd_link_relocatable (info)) |
b49e97c9 | 10525 | { |
4a14403c | 10526 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd) |
b49e97c9 TS |
10527 | && bfd_big_endian (input_bfd)) |
10528 | rel->r_offset -= 4; | |
10529 | ||
81d43bff | 10530 | if (!rela_relocation_p && rel->r_addend) |
5a659663 | 10531 | { |
81d43bff | 10532 | addend += rel->r_addend; |
738e5348 | 10533 | if (hi16_reloc_p (r_type) || got16_reloc_p (r_type)) |
5a659663 TS |
10534 | addend = mips_elf_high (addend); |
10535 | else if (r_type == R_MIPS_HIGHER) | |
10536 | addend = mips_elf_higher (addend); | |
10537 | else if (r_type == R_MIPS_HIGHEST) | |
10538 | addend = mips_elf_highest (addend); | |
30ac9238 RS |
10539 | else |
10540 | addend >>= howto->rightshift; | |
b49e97c9 | 10541 | |
30ac9238 RS |
10542 | /* We use the source mask, rather than the destination |
10543 | mask because the place to which we are writing will be | |
10544 | source of the addend in the final link. */ | |
b49e97c9 TS |
10545 | addend &= howto->src_mask; |
10546 | ||
5a659663 | 10547 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
10548 | /* See the comment above about using R_MIPS_64 in the 32-bit |
10549 | ABI. Here, we need to update the addend. It would be | |
10550 | possible to get away with just using the R_MIPS_32 reloc | |
10551 | but for endianness. */ | |
10552 | { | |
10553 | bfd_vma sign_bits; | |
10554 | bfd_vma low_bits; | |
10555 | bfd_vma high_bits; | |
10556 | ||
10557 | if (addend & ((bfd_vma) 1 << 31)) | |
10558 | #ifdef BFD64 | |
10559 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
10560 | #else | |
10561 | sign_bits = -1; | |
10562 | #endif | |
10563 | else | |
10564 | sign_bits = 0; | |
10565 | ||
10566 | /* If we don't know that we have a 64-bit type, | |
10567 | do two separate stores. */ | |
10568 | if (bfd_big_endian (input_bfd)) | |
10569 | { | |
10570 | /* Store the sign-bits (which are most significant) | |
10571 | first. */ | |
10572 | low_bits = sign_bits; | |
10573 | high_bits = addend; | |
10574 | } | |
10575 | else | |
10576 | { | |
10577 | low_bits = addend; | |
10578 | high_bits = sign_bits; | |
10579 | } | |
10580 | bfd_put_32 (input_bfd, low_bits, | |
10581 | contents + rel->r_offset); | |
10582 | bfd_put_32 (input_bfd, high_bits, | |
10583 | contents + rel->r_offset + 4); | |
10584 | continue; | |
10585 | } | |
10586 | ||
10587 | if (! mips_elf_perform_relocation (info, howto, rel, addend, | |
10588 | input_bfd, input_section, | |
0a1b45a2 AM |
10589 | contents, false)) |
10590 | return false; | |
b49e97c9 TS |
10591 | } |
10592 | ||
10593 | /* Go on to the next relocation. */ | |
10594 | continue; | |
10595 | } | |
10596 | ||
10597 | /* In the N32 and 64-bit ABIs there may be multiple consecutive | |
10598 | relocations for the same offset. In that case we are | |
10599 | supposed to treat the output of each relocation as the addend | |
10600 | for the next. */ | |
10601 | if (rel + 1 < relend | |
10602 | && rel->r_offset == rel[1].r_offset | |
10603 | && ELF_R_TYPE (input_bfd, rel[1].r_info) != R_MIPS_NONE) | |
0a1b45a2 | 10604 | use_saved_addend_p = true; |
b49e97c9 | 10605 | else |
0a1b45a2 | 10606 | use_saved_addend_p = false; |
b49e97c9 TS |
10607 | |
10608 | /* Figure out what value we are supposed to relocate. */ | |
10609 | switch (mips_elf_calculate_relocation (output_bfd, input_bfd, | |
47275900 MR |
10610 | input_section, contents, |
10611 | info, rel, addend, howto, | |
10612 | local_syms, local_sections, | |
10613 | &value, &name, &cross_mode_jump_p, | |
bce03d3d | 10614 | use_saved_addend_p)) |
b49e97c9 TS |
10615 | { |
10616 | case bfd_reloc_continue: | |
10617 | /* There's nothing to do. */ | |
10618 | continue; | |
10619 | ||
10620 | case bfd_reloc_undefined: | |
10621 | /* mips_elf_calculate_relocation already called the | |
10622 | undefined_symbol callback. There's no real point in | |
10623 | trying to perform the relocation at this point, so we | |
10624 | just skip ahead to the next relocation. */ | |
10625 | continue; | |
10626 | ||
10627 | case bfd_reloc_notsupported: | |
10628 | msg = _("internal error: unsupported relocation error"); | |
10629 | info->callbacks->warning | |
10630 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
0a1b45a2 | 10631 | return false; |
b49e97c9 TS |
10632 | |
10633 | case bfd_reloc_overflow: | |
10634 | if (use_saved_addend_p) | |
10635 | /* Ignore overflow until we reach the last relocation for | |
10636 | a given location. */ | |
10637 | ; | |
10638 | else | |
10639 | { | |
0e53d9da AN |
10640 | struct mips_elf_link_hash_table *htab; |
10641 | ||
10642 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 10643 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 10644 | BFD_ASSERT (name != NULL); |
0e53d9da | 10645 | if (!htab->small_data_overflow_reported |
9684f078 | 10646 | && (gprel16_reloc_p (howto->type) |
df58fc94 | 10647 | || literal_reloc_p (howto->type))) |
0e53d9da | 10648 | { |
91d6fa6a NC |
10649 | msg = _("small-data section exceeds 64KB;" |
10650 | " lower small-data size limit (see option -G)"); | |
0e53d9da | 10651 | |
0a1b45a2 | 10652 | htab->small_data_overflow_reported = true; |
0e53d9da AN |
10653 | (*info->callbacks->einfo) ("%P: %s\n", msg); |
10654 | } | |
1a72702b AM |
10655 | (*info->callbacks->reloc_overflow) |
10656 | (info, NULL, name, howto->name, (bfd_vma) 0, | |
10657 | input_bfd, input_section, rel->r_offset); | |
b49e97c9 TS |
10658 | } |
10659 | break; | |
10660 | ||
10661 | case bfd_reloc_ok: | |
10662 | break; | |
10663 | ||
df58fc94 | 10664 | case bfd_reloc_outofrange: |
7db9a74e | 10665 | msg = NULL; |
df58fc94 | 10666 | if (jal_reloc_p (howto->type)) |
9d862524 | 10667 | msg = (cross_mode_jump_p |
2c1c9679 | 10668 | ? _("cannot convert a jump to JALX " |
9d862524 MR |
10669 | "for a non-word-aligned address") |
10670 | : (howto->type == R_MIPS16_26 | |
2c1c9679 AM |
10671 | ? _("jump to a non-word-aligned address") |
10672 | : _("jump to a non-instruction-aligned address"))); | |
99aefae6 | 10673 | else if (b_reloc_p (howto->type)) |
a6ebf616 | 10674 | msg = (cross_mode_jump_p |
2c1c9679 | 10675 | ? _("cannot convert a branch to JALX " |
a6ebf616 | 10676 | "for a non-word-aligned address") |
2c1c9679 | 10677 | : _("branch to a non-instruction-aligned address")); |
7db9a74e MR |
10678 | else if (aligned_pcrel_reloc_p (howto->type)) |
10679 | msg = _("PC-relative load from unaligned address"); | |
10680 | if (msg) | |
df58fc94 | 10681 | { |
de341542 | 10682 | info->callbacks->einfo |
ed53407e MR |
10683 | ("%X%H: %s\n", input_bfd, input_section, rel->r_offset, msg); |
10684 | break; | |
7361da2c | 10685 | } |
df58fc94 RS |
10686 | /* Fall through. */ |
10687 | ||
b49e97c9 TS |
10688 | default: |
10689 | abort (); | |
10690 | break; | |
10691 | } | |
10692 | ||
10693 | /* If we've got another relocation for the address, keep going | |
10694 | until we reach the last one. */ | |
10695 | if (use_saved_addend_p) | |
10696 | { | |
10697 | addend = value; | |
10698 | continue; | |
10699 | } | |
10700 | ||
4a14403c | 10701 | if (r_type == R_MIPS_64 && ! NEWABI_P (output_bfd)) |
b49e97c9 TS |
10702 | /* See the comment above about using R_MIPS_64 in the 32-bit |
10703 | ABI. Until now, we've been using the HOWTO for R_MIPS_32; | |
10704 | that calculated the right value. Now, however, we | |
10705 | sign-extend the 32-bit result to 64-bits, and store it as a | |
10706 | 64-bit value. We are especially generous here in that we | |
10707 | go to extreme lengths to support this usage on systems with | |
10708 | only a 32-bit VMA. */ | |
10709 | { | |
10710 | bfd_vma sign_bits; | |
10711 | bfd_vma low_bits; | |
10712 | bfd_vma high_bits; | |
10713 | ||
10714 | if (value & ((bfd_vma) 1 << 31)) | |
10715 | #ifdef BFD64 | |
10716 | sign_bits = ((bfd_vma) 1 << 32) - 1; | |
10717 | #else | |
10718 | sign_bits = -1; | |
10719 | #endif | |
10720 | else | |
10721 | sign_bits = 0; | |
10722 | ||
10723 | /* If we don't know that we have a 64-bit type, | |
10724 | do two separate stores. */ | |
10725 | if (bfd_big_endian (input_bfd)) | |
10726 | { | |
10727 | /* Undo what we did above. */ | |
10728 | rel->r_offset -= 4; | |
10729 | /* Store the sign-bits (which are most significant) | |
10730 | first. */ | |
10731 | low_bits = sign_bits; | |
10732 | high_bits = value; | |
10733 | } | |
10734 | else | |
10735 | { | |
10736 | low_bits = value; | |
10737 | high_bits = sign_bits; | |
10738 | } | |
10739 | bfd_put_32 (input_bfd, low_bits, | |
10740 | contents + rel->r_offset); | |
10741 | bfd_put_32 (input_bfd, high_bits, | |
10742 | contents + rel->r_offset + 4); | |
10743 | continue; | |
10744 | } | |
10745 | ||
10746 | /* Actually perform the relocation. */ | |
10747 | if (! mips_elf_perform_relocation (info, howto, rel, value, | |
10748 | input_bfd, input_section, | |
38a7df63 | 10749 | contents, cross_mode_jump_p)) |
0a1b45a2 | 10750 | return false; |
b49e97c9 TS |
10751 | } |
10752 | ||
0a1b45a2 | 10753 | return true; |
b49e97c9 TS |
10754 | } |
10755 | \f | |
861fb55a DJ |
10756 | /* A function that iterates over each entry in la25_stubs and fills |
10757 | in the code for each one. DATA points to a mips_htab_traverse_info. */ | |
10758 | ||
10759 | static int | |
10760 | mips_elf_create_la25_stub (void **slot, void *data) | |
10761 | { | |
10762 | struct mips_htab_traverse_info *hti; | |
10763 | struct mips_elf_link_hash_table *htab; | |
10764 | struct mips_elf_la25_stub *stub; | |
10765 | asection *s; | |
10766 | bfd_byte *loc; | |
10767 | bfd_vma offset, target, target_high, target_low; | |
3734320d MF |
10768 | bfd_vma branch_pc; |
10769 | bfd_signed_vma pcrel_offset = 0; | |
861fb55a DJ |
10770 | |
10771 | stub = (struct mips_elf_la25_stub *) *slot; | |
10772 | hti = (struct mips_htab_traverse_info *) data; | |
10773 | htab = mips_elf_hash_table (hti->info); | |
4dfe6ac6 | 10774 | BFD_ASSERT (htab != NULL); |
861fb55a DJ |
10775 | |
10776 | /* Create the section contents, if we haven't already. */ | |
10777 | s = stub->stub_section; | |
10778 | loc = s->contents; | |
10779 | if (loc == NULL) | |
10780 | { | |
10781 | loc = bfd_malloc (s->size); | |
10782 | if (loc == NULL) | |
10783 | { | |
0a1b45a2 AM |
10784 | hti->error = true; |
10785 | return false; | |
861fb55a DJ |
10786 | } |
10787 | s->contents = loc; | |
10788 | } | |
10789 | ||
10790 | /* Work out where in the section this stub should go. */ | |
10791 | offset = stub->offset; | |
10792 | ||
3734320d MF |
10793 | /* We add 8 here to account for the LUI/ADDIU instructions |
10794 | before the branch instruction. This cannot be moved down to | |
10795 | where pcrel_offset is calculated as 's' is updated in | |
10796 | mips_elf_get_la25_target. */ | |
10797 | branch_pc = s->output_section->vma + s->output_offset + offset + 8; | |
10798 | ||
861fb55a | 10799 | /* Work out the target address. */ |
8f0c309a CLT |
10800 | target = mips_elf_get_la25_target (stub, &s); |
10801 | target += s->output_section->vma + s->output_offset; | |
10802 | ||
861fb55a DJ |
10803 | target_high = ((target + 0x8000) >> 16) & 0xffff; |
10804 | target_low = (target & 0xffff); | |
10805 | ||
3734320d MF |
10806 | /* Calculate the PC of the compact branch instruction (for the case where |
10807 | compact branches are used for either microMIPSR6 or MIPSR6 with | |
10808 | compact branches. Add 4-bytes to account for BC using the PC of the | |
10809 | next instruction as the base. */ | |
10810 | pcrel_offset = target - (branch_pc + 4); | |
10811 | ||
861fb55a DJ |
10812 | if (stub->stub_section != htab->strampoline) |
10813 | { | |
df58fc94 | 10814 | /* This is a simple LUI/ADDIU stub. Zero out the beginning |
861fb55a DJ |
10815 | of the section and write the two instructions at the end. */ |
10816 | memset (loc, 0, offset); | |
10817 | loc += offset; | |
df58fc94 RS |
10818 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
10819 | { | |
d21911ea MR |
10820 | bfd_put_micromips_32 (hti->output_bfd, |
10821 | LA25_LUI_MICROMIPS (target_high), | |
10822 | loc); | |
10823 | bfd_put_micromips_32 (hti->output_bfd, | |
10824 | LA25_ADDIU_MICROMIPS (target_low), | |
10825 | loc + 4); | |
df58fc94 RS |
10826 | } |
10827 | else | |
10828 | { | |
10829 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
10830 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 4); | |
10831 | } | |
861fb55a DJ |
10832 | } |
10833 | else | |
10834 | { | |
10835 | /* This is trampoline. */ | |
10836 | loc += offset; | |
df58fc94 RS |
10837 | if (ELF_ST_IS_MICROMIPS (stub->h->root.other)) |
10838 | { | |
d21911ea MR |
10839 | bfd_put_micromips_32 (hti->output_bfd, |
10840 | LA25_LUI_MICROMIPS (target_high), loc); | |
10841 | bfd_put_micromips_32 (hti->output_bfd, | |
10842 | LA25_J_MICROMIPS (target), loc + 4); | |
10843 | bfd_put_micromips_32 (hti->output_bfd, | |
10844 | LA25_ADDIU_MICROMIPS (target_low), loc + 8); | |
df58fc94 RS |
10845 | bfd_put_32 (hti->output_bfd, 0, loc + 12); |
10846 | } | |
10847 | else | |
10848 | { | |
10849 | bfd_put_32 (hti->output_bfd, LA25_LUI (target_high), loc); | |
3734320d MF |
10850 | if (MIPSR6_P (hti->output_bfd) && htab->compact_branches) |
10851 | { | |
10852 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 4); | |
10853 | bfd_put_32 (hti->output_bfd, LA25_BC (pcrel_offset), loc + 8); | |
10854 | } | |
10855 | else | |
10856 | { | |
10857 | bfd_put_32 (hti->output_bfd, LA25_J (target), loc + 4); | |
10858 | bfd_put_32 (hti->output_bfd, LA25_ADDIU (target_low), loc + 8); | |
10859 | } | |
df58fc94 RS |
10860 | bfd_put_32 (hti->output_bfd, 0, loc + 12); |
10861 | } | |
861fb55a | 10862 | } |
0a1b45a2 | 10863 | return true; |
861fb55a DJ |
10864 | } |
10865 | ||
b49e97c9 TS |
10866 | /* If NAME is one of the special IRIX6 symbols defined by the linker, |
10867 | adjust it appropriately now. */ | |
10868 | ||
10869 | static void | |
9719ad41 RS |
10870 | mips_elf_irix6_finish_dynamic_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
10871 | const char *name, Elf_Internal_Sym *sym) | |
b49e97c9 TS |
10872 | { |
10873 | /* The linker script takes care of providing names and values for | |
10874 | these, but we must place them into the right sections. */ | |
10875 | static const char* const text_section_symbols[] = { | |
10876 | "_ftext", | |
10877 | "_etext", | |
10878 | "__dso_displacement", | |
10879 | "__elf_header", | |
10880 | "__program_header_table", | |
10881 | NULL | |
10882 | }; | |
10883 | ||
10884 | static const char* const data_section_symbols[] = { | |
10885 | "_fdata", | |
10886 | "_edata", | |
10887 | "_end", | |
10888 | "_fbss", | |
10889 | NULL | |
10890 | }; | |
10891 | ||
10892 | const char* const *p; | |
10893 | int i; | |
10894 | ||
10895 | for (i = 0; i < 2; ++i) | |
10896 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; | |
10897 | *p; | |
10898 | ++p) | |
10899 | if (strcmp (*p, name) == 0) | |
10900 | { | |
10901 | /* All of these symbols are given type STT_SECTION by the | |
10902 | IRIX6 linker. */ | |
10903 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
e10609d3 | 10904 | sym->st_other = STO_PROTECTED; |
b49e97c9 TS |
10905 | |
10906 | /* The IRIX linker puts these symbols in special sections. */ | |
10907 | if (i == 0) | |
10908 | sym->st_shndx = SHN_MIPS_TEXT; | |
10909 | else | |
10910 | sym->st_shndx = SHN_MIPS_DATA; | |
10911 | ||
10912 | break; | |
10913 | } | |
10914 | } | |
10915 | ||
10916 | /* Finish up dynamic symbol handling. We set the contents of various | |
10917 | dynamic sections here. */ | |
10918 | ||
0a1b45a2 | 10919 | bool |
9719ad41 RS |
10920 | _bfd_mips_elf_finish_dynamic_symbol (bfd *output_bfd, |
10921 | struct bfd_link_info *info, | |
10922 | struct elf_link_hash_entry *h, | |
10923 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
10924 | { |
10925 | bfd *dynobj; | |
b49e97c9 | 10926 | asection *sgot; |
f4416af6 | 10927 | struct mips_got_info *g, *gg; |
b49e97c9 | 10928 | const char *name; |
3d6746ca | 10929 | int idx; |
5108fc1b | 10930 | struct mips_elf_link_hash_table *htab; |
738e5348 | 10931 | struct mips_elf_link_hash_entry *hmips; |
b49e97c9 | 10932 | |
5108fc1b | 10933 | htab = mips_elf_hash_table (info); |
4dfe6ac6 | 10934 | BFD_ASSERT (htab != NULL); |
b49e97c9 | 10935 | dynobj = elf_hash_table (info)->dynobj; |
738e5348 | 10936 | hmips = (struct mips_elf_link_hash_entry *) h; |
b49e97c9 | 10937 | |
90c14f0c | 10938 | BFD_ASSERT (htab->root.target_os != is_vxworks); |
861fb55a | 10939 | |
1bbce132 MR |
10940 | if (h->plt.plist != NULL |
10941 | && (h->plt.plist->mips_offset != MINUS_ONE | |
10942 | || h->plt.plist->comp_offset != MINUS_ONE)) | |
861fb55a DJ |
10943 | { |
10944 | /* We've decided to create a PLT entry for this symbol. */ | |
10945 | bfd_byte *loc; | |
1bbce132 | 10946 | bfd_vma header_address, got_address; |
861fb55a | 10947 | bfd_vma got_address_high, got_address_low, load; |
1bbce132 MR |
10948 | bfd_vma got_index; |
10949 | bfd_vma isa_bit; | |
10950 | ||
10951 | got_index = h->plt.plist->gotplt_index; | |
861fb55a DJ |
10952 | |
10953 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
10954 | BFD_ASSERT (h->dynindx != -1); | |
ce558b89 | 10955 | BFD_ASSERT (htab->root.splt != NULL); |
1bbce132 | 10956 | BFD_ASSERT (got_index != MINUS_ONE); |
861fb55a DJ |
10957 | BFD_ASSERT (!h->def_regular); |
10958 | ||
10959 | /* Calculate the address of the PLT header. */ | |
1bbce132 | 10960 | isa_bit = htab->plt_header_is_comp; |
ce558b89 AM |
10961 | header_address = (htab->root.splt->output_section->vma |
10962 | + htab->root.splt->output_offset + isa_bit); | |
861fb55a DJ |
10963 | |
10964 | /* Calculate the address of the .got.plt entry. */ | |
ce558b89 AM |
10965 | got_address = (htab->root.sgotplt->output_section->vma |
10966 | + htab->root.sgotplt->output_offset | |
1bbce132 MR |
10967 | + got_index * MIPS_ELF_GOT_SIZE (dynobj)); |
10968 | ||
861fb55a DJ |
10969 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; |
10970 | got_address_low = got_address & 0xffff; | |
10971 | ||
789ff5b6 MR |
10972 | /* The PLT sequence is not safe for N64 if .got.plt entry's address |
10973 | cannot be loaded in two instructions. */ | |
10974 | if (ABI_64_P (output_bfd) | |
10975 | && ((got_address + 0x80008000) & ~(bfd_vma) 0xffffffff) != 0) | |
10976 | { | |
10977 | _bfd_error_handler | |
10978 | /* xgettext:c-format */ | |
10979 | (_("%pB: `%pA' entry VMA of %#" PRIx64 " outside the 32-bit range " | |
10980 | "supported; consider using `-Ttext-segment=...'"), | |
10981 | output_bfd, | |
10982 | htab->root.sgotplt->output_section, | |
10983 | (int64_t) got_address); | |
10984 | bfd_set_error (bfd_error_no_error); | |
0a1b45a2 | 10985 | return false; |
789ff5b6 MR |
10986 | } |
10987 | ||
861fb55a | 10988 | /* Initially point the .got.plt entry at the PLT header. */ |
6a382bce MR |
10989 | loc = (htab->root.sgotplt->contents |
10990 | + got_index * MIPS_ELF_GOT_SIZE (dynobj)); | |
861fb55a DJ |
10991 | if (ABI_64_P (output_bfd)) |
10992 | bfd_put_64 (output_bfd, header_address, loc); | |
10993 | else | |
10994 | bfd_put_32 (output_bfd, header_address, loc); | |
10995 | ||
1bbce132 | 10996 | /* Now handle the PLT itself. First the standard entry (the order |
07d6d2b8 | 10997 | does not matter, we just have to pick one). */ |
1bbce132 MR |
10998 | if (h->plt.plist->mips_offset != MINUS_ONE) |
10999 | { | |
11000 | const bfd_vma *plt_entry; | |
11001 | bfd_vma plt_offset; | |
861fb55a | 11002 | |
1bbce132 | 11003 | plt_offset = htab->plt_header_size + h->plt.plist->mips_offset; |
861fb55a | 11004 | |
ce558b89 | 11005 | BFD_ASSERT (plt_offset <= htab->root.splt->size); |
6d30f5b2 | 11006 | |
1bbce132 | 11007 | /* Find out where the .plt entry should go. */ |
ce558b89 | 11008 | loc = htab->root.splt->contents + plt_offset; |
1bbce132 MR |
11009 | |
11010 | /* Pick the load opcode. */ | |
11011 | load = MIPS_ELF_LOAD_WORD (output_bfd); | |
11012 | ||
11013 | /* Fill in the PLT entry itself. */ | |
7361da2c AB |
11014 | |
11015 | if (MIPSR6_P (output_bfd)) | |
3734320d MF |
11016 | plt_entry = htab->compact_branches ? mipsr6_exec_plt_entry_compact |
11017 | : mipsr6_exec_plt_entry; | |
7361da2c AB |
11018 | else |
11019 | plt_entry = mips_exec_plt_entry; | |
1bbce132 MR |
11020 | bfd_put_32 (output_bfd, plt_entry[0] | got_address_high, loc); |
11021 | bfd_put_32 (output_bfd, plt_entry[1] | got_address_low | load, | |
11022 | loc + 4); | |
11023 | ||
3734320d MF |
11024 | if (! LOAD_INTERLOCKS_P (output_bfd) |
11025 | || (MIPSR6_P (output_bfd) && htab->compact_branches)) | |
1bbce132 MR |
11026 | { |
11027 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 8); | |
11028 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
11029 | } | |
11030 | else | |
11031 | { | |
11032 | bfd_put_32 (output_bfd, plt_entry[3], loc + 8); | |
11033 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, | |
11034 | loc + 12); | |
11035 | } | |
6d30f5b2 | 11036 | } |
1bbce132 MR |
11037 | |
11038 | /* Now the compressed entry. They come after any standard ones. */ | |
11039 | if (h->plt.plist->comp_offset != MINUS_ONE) | |
6d30f5b2 | 11040 | { |
1bbce132 MR |
11041 | bfd_vma plt_offset; |
11042 | ||
11043 | plt_offset = (htab->plt_header_size + htab->plt_mips_offset | |
11044 | + h->plt.plist->comp_offset); | |
11045 | ||
ce558b89 | 11046 | BFD_ASSERT (plt_offset <= htab->root.splt->size); |
1bbce132 MR |
11047 | |
11048 | /* Find out where the .plt entry should go. */ | |
ce558b89 | 11049 | loc = htab->root.splt->contents + plt_offset; |
1bbce132 MR |
11050 | |
11051 | /* Fill in the PLT entry itself. */ | |
833794fc MR |
11052 | if (!MICROMIPS_P (output_bfd)) |
11053 | { | |
11054 | const bfd_vma *plt_entry = mips16_o32_exec_plt_entry; | |
11055 | ||
11056 | bfd_put_16 (output_bfd, plt_entry[0], loc); | |
11057 | bfd_put_16 (output_bfd, plt_entry[1], loc + 2); | |
11058 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
11059 | bfd_put_16 (output_bfd, plt_entry[3], loc + 6); | |
11060 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
11061 | bfd_put_16 (output_bfd, plt_entry[5], loc + 10); | |
11062 | bfd_put_32 (output_bfd, got_address, loc + 12); | |
11063 | } | |
11064 | else if (htab->insn32) | |
11065 | { | |
11066 | const bfd_vma *plt_entry = micromips_insn32_o32_exec_plt_entry; | |
11067 | ||
11068 | bfd_put_16 (output_bfd, plt_entry[0], loc); | |
11069 | bfd_put_16 (output_bfd, got_address_high, loc + 2); | |
11070 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
11071 | bfd_put_16 (output_bfd, got_address_low, loc + 6); | |
11072 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
11073 | bfd_put_16 (output_bfd, plt_entry[5], loc + 10); | |
11074 | bfd_put_16 (output_bfd, plt_entry[6], loc + 12); | |
11075 | bfd_put_16 (output_bfd, got_address_low, loc + 14); | |
11076 | } | |
11077 | else | |
1bbce132 MR |
11078 | { |
11079 | const bfd_vma *plt_entry = micromips_o32_exec_plt_entry; | |
11080 | bfd_signed_vma gotpc_offset; | |
11081 | bfd_vma loc_address; | |
11082 | ||
11083 | BFD_ASSERT (got_address % 4 == 0); | |
11084 | ||
ce558b89 AM |
11085 | loc_address = (htab->root.splt->output_section->vma |
11086 | + htab->root.splt->output_offset + plt_offset); | |
1bbce132 MR |
11087 | gotpc_offset = got_address - ((loc_address | 3) ^ 3); |
11088 | ||
11089 | /* ADDIUPC has a span of +/-16MB, check we're in range. */ | |
11090 | if (gotpc_offset + 0x1000000 >= 0x2000000) | |
11091 | { | |
4eca0228 | 11092 | _bfd_error_handler |
695344c0 | 11093 | /* xgettext:c-format */ |
2dcf00ce | 11094 | (_("%pB: `%pA' offset of %" PRId64 " from `%pA' " |
1bbce132 MR |
11095 | "beyond the range of ADDIUPC"), |
11096 | output_bfd, | |
ce558b89 | 11097 | htab->root.sgotplt->output_section, |
2dcf00ce | 11098 | (int64_t) gotpc_offset, |
c08bb8dd | 11099 | htab->root.splt->output_section); |
1bbce132 | 11100 | bfd_set_error (bfd_error_no_error); |
0a1b45a2 | 11101 | return false; |
1bbce132 MR |
11102 | } |
11103 | bfd_put_16 (output_bfd, | |
11104 | plt_entry[0] | ((gotpc_offset >> 18) & 0x7f), loc); | |
11105 | bfd_put_16 (output_bfd, (gotpc_offset >> 2) & 0xffff, loc + 2); | |
11106 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
11107 | bfd_put_16 (output_bfd, plt_entry[3], loc + 6); | |
11108 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
11109 | bfd_put_16 (output_bfd, plt_entry[5], loc + 10); | |
11110 | } | |
6d30f5b2 | 11111 | } |
861fb55a DJ |
11112 | |
11113 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
ce558b89 | 11114 | mips_elf_output_dynamic_relocation (output_bfd, htab->root.srelplt, |
1bbce132 | 11115 | got_index - 2, h->dynindx, |
861fb55a DJ |
11116 | R_MIPS_JUMP_SLOT, got_address); |
11117 | ||
11118 | /* We distinguish between PLT entries and lazy-binding stubs by | |
11119 | giving the former an st_other value of STO_MIPS_PLT. Set the | |
11120 | flag and leave the value if there are any relocations in the | |
11121 | binary where pointer equality matters. */ | |
11122 | sym->st_shndx = SHN_UNDEF; | |
11123 | if (h->pointer_equality_needed) | |
1bbce132 | 11124 | sym->st_other = ELF_ST_SET_MIPS_PLT (sym->st_other); |
861fb55a | 11125 | else |
1bbce132 MR |
11126 | { |
11127 | sym->st_value = 0; | |
11128 | sym->st_other = 0; | |
11129 | } | |
861fb55a | 11130 | } |
1bbce132 MR |
11131 | |
11132 | if (h->plt.plist != NULL && h->plt.plist->stub_offset != MINUS_ONE) | |
b49e97c9 | 11133 | { |
861fb55a | 11134 | /* We've decided to create a lazy-binding stub. */ |
0a1b45a2 | 11135 | bool micromips_p = MICROMIPS_P (output_bfd); |
1bbce132 MR |
11136 | unsigned int other = micromips_p ? STO_MICROMIPS : 0; |
11137 | bfd_vma stub_size = htab->function_stub_size; | |
5108fc1b | 11138 | bfd_byte stub[MIPS_FUNCTION_STUB_BIG_SIZE]; |
1bbce132 MR |
11139 | bfd_vma isa_bit = micromips_p; |
11140 | bfd_vma stub_big_size; | |
11141 | ||
833794fc | 11142 | if (!micromips_p) |
1bbce132 | 11143 | stub_big_size = MIPS_FUNCTION_STUB_BIG_SIZE; |
833794fc MR |
11144 | else if (htab->insn32) |
11145 | stub_big_size = MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE; | |
11146 | else | |
11147 | stub_big_size = MICROMIPS_FUNCTION_STUB_BIG_SIZE; | |
b49e97c9 TS |
11148 | |
11149 | /* This symbol has a stub. Set it up. */ | |
11150 | ||
11151 | BFD_ASSERT (h->dynindx != -1); | |
11152 | ||
1bbce132 | 11153 | BFD_ASSERT (stub_size == stub_big_size || h->dynindx <= 0xffff); |
3d6746ca DD |
11154 | |
11155 | /* Values up to 2^31 - 1 are allowed. Larger values would cause | |
5108fc1b RS |
11156 | sign extension at runtime in the stub, resulting in a negative |
11157 | index value. */ | |
11158 | if (h->dynindx & ~0x7fffffff) | |
0a1b45a2 | 11159 | return false; |
b49e97c9 TS |
11160 | |
11161 | /* Fill the stub. */ | |
1bbce132 MR |
11162 | if (micromips_p) |
11163 | { | |
11164 | idx = 0; | |
11165 | bfd_put_micromips_32 (output_bfd, STUB_LW_MICROMIPS (output_bfd), | |
11166 | stub + idx); | |
11167 | idx += 4; | |
833794fc MR |
11168 | if (htab->insn32) |
11169 | { | |
11170 | bfd_put_micromips_32 (output_bfd, | |
40fc1451 | 11171 | STUB_MOVE32_MICROMIPS, stub + idx); |
833794fc MR |
11172 | idx += 4; |
11173 | } | |
11174 | else | |
11175 | { | |
11176 | bfd_put_16 (output_bfd, STUB_MOVE_MICROMIPS, stub + idx); | |
11177 | idx += 2; | |
11178 | } | |
1bbce132 MR |
11179 | if (stub_size == stub_big_size) |
11180 | { | |
11181 | long dynindx_hi = (h->dynindx >> 16) & 0x7fff; | |
11182 | ||
11183 | bfd_put_micromips_32 (output_bfd, | |
11184 | STUB_LUI_MICROMIPS (dynindx_hi), | |
11185 | stub + idx); | |
11186 | idx += 4; | |
11187 | } | |
833794fc MR |
11188 | if (htab->insn32) |
11189 | { | |
11190 | bfd_put_micromips_32 (output_bfd, STUB_JALR32_MICROMIPS, | |
11191 | stub + idx); | |
11192 | idx += 4; | |
11193 | } | |
11194 | else | |
11195 | { | |
11196 | bfd_put_16 (output_bfd, STUB_JALR_MICROMIPS, stub + idx); | |
11197 | idx += 2; | |
11198 | } | |
1bbce132 MR |
11199 | |
11200 | /* If a large stub is not required and sign extension is not a | |
11201 | problem, then use legacy code in the stub. */ | |
11202 | if (stub_size == stub_big_size) | |
11203 | bfd_put_micromips_32 (output_bfd, | |
11204 | STUB_ORI_MICROMIPS (h->dynindx & 0xffff), | |
11205 | stub + idx); | |
11206 | else if (h->dynindx & ~0x7fff) | |
11207 | bfd_put_micromips_32 (output_bfd, | |
11208 | STUB_LI16U_MICROMIPS (h->dynindx & 0xffff), | |
11209 | stub + idx); | |
11210 | else | |
11211 | bfd_put_micromips_32 (output_bfd, | |
11212 | STUB_LI16S_MICROMIPS (output_bfd, | |
11213 | h->dynindx), | |
11214 | stub + idx); | |
11215 | } | |
3d6746ca | 11216 | else |
1bbce132 MR |
11217 | { |
11218 | idx = 0; | |
11219 | bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx); | |
11220 | idx += 4; | |
40fc1451 | 11221 | bfd_put_32 (output_bfd, STUB_MOVE, stub + idx); |
1bbce132 MR |
11222 | idx += 4; |
11223 | if (stub_size == stub_big_size) | |
11224 | { | |
11225 | bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff), | |
11226 | stub + idx); | |
11227 | idx += 4; | |
11228 | } | |
3734320d MF |
11229 | |
11230 | if (!(MIPSR6_P (output_bfd) && htab->compact_branches)) | |
11231 | { | |
11232 | bfd_put_32 (output_bfd, STUB_JALR, stub + idx); | |
11233 | idx += 4; | |
11234 | } | |
1bbce132 MR |
11235 | |
11236 | /* If a large stub is not required and sign extension is not a | |
11237 | problem, then use legacy code in the stub. */ | |
11238 | if (stub_size == stub_big_size) | |
11239 | bfd_put_32 (output_bfd, STUB_ORI (h->dynindx & 0xffff), | |
11240 | stub + idx); | |
11241 | else if (h->dynindx & ~0x7fff) | |
11242 | bfd_put_32 (output_bfd, STUB_LI16U (h->dynindx & 0xffff), | |
11243 | stub + idx); | |
11244 | else | |
11245 | bfd_put_32 (output_bfd, STUB_LI16S (output_bfd, h->dynindx), | |
11246 | stub + idx); | |
3734320d MF |
11247 | idx += 4; |
11248 | ||
11249 | if (MIPSR6_P (output_bfd) && htab->compact_branches) | |
11250 | bfd_put_32 (output_bfd, STUB_JALRC, stub + idx); | |
1bbce132 | 11251 | } |
5108fc1b | 11252 | |
1bbce132 MR |
11253 | BFD_ASSERT (h->plt.plist->stub_offset <= htab->sstubs->size); |
11254 | memcpy (htab->sstubs->contents + h->plt.plist->stub_offset, | |
11255 | stub, stub_size); | |
b49e97c9 | 11256 | |
1bbce132 | 11257 | /* Mark the symbol as undefined. stub_offset != -1 occurs |
b49e97c9 TS |
11258 | only for the referenced symbol. */ |
11259 | sym->st_shndx = SHN_UNDEF; | |
11260 | ||
11261 | /* The run-time linker uses the st_value field of the symbol | |
11262 | to reset the global offset table entry for this external | |
11263 | to its stub address when unlinking a shared object. */ | |
4e41d0d7 RS |
11264 | sym->st_value = (htab->sstubs->output_section->vma |
11265 | + htab->sstubs->output_offset | |
1bbce132 MR |
11266 | + h->plt.plist->stub_offset |
11267 | + isa_bit); | |
11268 | sym->st_other = other; | |
b49e97c9 TS |
11269 | } |
11270 | ||
738e5348 RS |
11271 | /* If we have a MIPS16 function with a stub, the dynamic symbol must |
11272 | refer to the stub, since only the stub uses the standard calling | |
11273 | conventions. */ | |
11274 | if (h->dynindx != -1 && hmips->fn_stub != NULL) | |
11275 | { | |
11276 | BFD_ASSERT (hmips->need_fn_stub); | |
11277 | sym->st_value = (hmips->fn_stub->output_section->vma | |
11278 | + hmips->fn_stub->output_offset); | |
11279 | sym->st_size = hmips->fn_stub->size; | |
11280 | sym->st_other = ELF_ST_VISIBILITY (sym->st_other); | |
11281 | } | |
11282 | ||
b49e97c9 | 11283 | BFD_ASSERT (h->dynindx != -1 |
f5385ebf | 11284 | || h->forced_local); |
b49e97c9 | 11285 | |
ce558b89 | 11286 | sgot = htab->root.sgot; |
a8028dd0 | 11287 | g = htab->got_info; |
b49e97c9 TS |
11288 | BFD_ASSERT (g != NULL); |
11289 | ||
11290 | /* Run through the global symbol table, creating GOT entries for all | |
11291 | the symbols that need them. */ | |
020d7251 | 11292 | if (hmips->global_got_area != GGA_NONE) |
b49e97c9 TS |
11293 | { |
11294 | bfd_vma offset; | |
11295 | bfd_vma value; | |
11296 | ||
6eaa6adc | 11297 | value = sym->st_value; |
13fbec83 | 11298 | offset = mips_elf_primary_global_got_index (output_bfd, info, h); |
b49e97c9 TS |
11299 | MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset); |
11300 | } | |
11301 | ||
e641e783 | 11302 | if (hmips->global_got_area != GGA_NONE && g->next) |
f4416af6 AO |
11303 | { |
11304 | struct mips_got_entry e, *p; | |
0626d451 | 11305 | bfd_vma entry; |
f4416af6 | 11306 | bfd_vma offset; |
f4416af6 AO |
11307 | |
11308 | gg = g; | |
11309 | ||
11310 | e.abfd = output_bfd; | |
11311 | e.symndx = -1; | |
738e5348 | 11312 | e.d.h = hmips; |
9ab066b4 | 11313 | e.tls_type = GOT_TLS_NONE; |
143d77c5 | 11314 | |
f4416af6 AO |
11315 | for (g = g->next; g->next != gg; g = g->next) |
11316 | { | |
11317 | if (g->got_entries | |
11318 | && (p = (struct mips_got_entry *) htab_find (g->got_entries, | |
11319 | &e))) | |
11320 | { | |
11321 | offset = p->gotidx; | |
ce558b89 | 11322 | BFD_ASSERT (offset > 0 && offset < htab->root.sgot->size); |
0e1862bb | 11323 | if (bfd_link_pic (info) |
0626d451 RS |
11324 | || (elf_hash_table (info)->dynamic_sections_created |
11325 | && p->d.h != NULL | |
f5385ebf AM |
11326 | && p->d.h->root.def_dynamic |
11327 | && !p->d.h->root.def_regular)) | |
0626d451 RS |
11328 | { |
11329 | /* Create an R_MIPS_REL32 relocation for this entry. Due to | |
11330 | the various compatibility problems, it's easier to mock | |
11331 | up an R_MIPS_32 or R_MIPS_64 relocation and leave | |
11332 | mips_elf_create_dynamic_relocation to calculate the | |
11333 | appropriate addend. */ | |
11334 | Elf_Internal_Rela rel[3]; | |
11335 | ||
11336 | memset (rel, 0, sizeof (rel)); | |
11337 | if (ABI_64_P (output_bfd)) | |
11338 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_64); | |
11339 | else | |
11340 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_32); | |
11341 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset = offset; | |
11342 | ||
11343 | entry = 0; | |
11344 | if (! (mips_elf_create_dynamic_relocation | |
11345 | (output_bfd, info, rel, | |
11346 | e.d.h, NULL, sym->st_value, &entry, sgot))) | |
0a1b45a2 | 11347 | return false; |
0626d451 RS |
11348 | } |
11349 | else | |
11350 | entry = sym->st_value; | |
11351 | MIPS_ELF_PUT_WORD (output_bfd, entry, sgot->contents + offset); | |
f4416af6 AO |
11352 | } |
11353 | } | |
11354 | } | |
11355 | ||
b49e97c9 TS |
11356 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
11357 | name = h->root.root.string; | |
9637f6ef | 11358 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 | 11359 | || h == elf_hash_table (info)->hgot) |
b49e97c9 TS |
11360 | sym->st_shndx = SHN_ABS; |
11361 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 | |
11362 | || strcmp (name, "_DYNAMIC_LINKING") == 0) | |
11363 | { | |
11364 | sym->st_shndx = SHN_ABS; | |
11365 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
11366 | sym->st_value = 1; | |
11367 | } | |
b49e97c9 TS |
11368 | else if (SGI_COMPAT (output_bfd)) |
11369 | { | |
11370 | if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 | |
11371 | || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) | |
11372 | { | |
11373 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
11374 | sym->st_other = STO_PROTECTED; | |
11375 | sym->st_value = 0; | |
11376 | sym->st_shndx = SHN_MIPS_DATA; | |
11377 | } | |
11378 | else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) | |
11379 | { | |
11380 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
11381 | sym->st_other = STO_PROTECTED; | |
11382 | sym->st_value = mips_elf_hash_table (info)->procedure_count; | |
11383 | sym->st_shndx = SHN_ABS; | |
11384 | } | |
11385 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) | |
11386 | { | |
11387 | if (h->type == STT_FUNC) | |
11388 | sym->st_shndx = SHN_MIPS_TEXT; | |
11389 | else if (h->type == STT_OBJECT) | |
11390 | sym->st_shndx = SHN_MIPS_DATA; | |
11391 | } | |
11392 | } | |
11393 | ||
861fb55a DJ |
11394 | /* Emit a copy reloc, if needed. */ |
11395 | if (h->needs_copy) | |
11396 | { | |
11397 | asection *s; | |
11398 | bfd_vma symval; | |
11399 | ||
11400 | BFD_ASSERT (h->dynindx != -1); | |
11401 | BFD_ASSERT (htab->use_plts_and_copy_relocs); | |
11402 | ||
0a1b45a2 | 11403 | s = mips_elf_rel_dyn_section (info, false); |
861fb55a DJ |
11404 | symval = (h->root.u.def.section->output_section->vma |
11405 | + h->root.u.def.section->output_offset | |
11406 | + h->root.u.def.value); | |
11407 | mips_elf_output_dynamic_relocation (output_bfd, s, s->reloc_count++, | |
11408 | h->dynindx, R_MIPS_COPY, symval); | |
11409 | } | |
11410 | ||
b49e97c9 TS |
11411 | /* Handle the IRIX6-specific symbols. */ |
11412 | if (IRIX_COMPAT (output_bfd) == ict_irix6) | |
11413 | mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym); | |
11414 | ||
cbf8d970 MR |
11415 | /* Keep dynamic compressed symbols odd. This allows the dynamic linker |
11416 | to treat compressed symbols like any other. */ | |
30c09090 | 11417 | if (ELF_ST_IS_MIPS16 (sym->st_other)) |
738e5348 RS |
11418 | { |
11419 | BFD_ASSERT (sym->st_value & 1); | |
11420 | sym->st_other -= STO_MIPS16; | |
11421 | } | |
cbf8d970 MR |
11422 | else if (ELF_ST_IS_MICROMIPS (sym->st_other)) |
11423 | { | |
11424 | BFD_ASSERT (sym->st_value & 1); | |
11425 | sym->st_other -= STO_MICROMIPS; | |
11426 | } | |
b49e97c9 | 11427 | |
0a1b45a2 | 11428 | return true; |
b49e97c9 TS |
11429 | } |
11430 | ||
0a44bf69 RS |
11431 | /* Likewise, for VxWorks. */ |
11432 | ||
0a1b45a2 | 11433 | bool |
0a44bf69 RS |
11434 | _bfd_mips_vxworks_finish_dynamic_symbol (bfd *output_bfd, |
11435 | struct bfd_link_info *info, | |
11436 | struct elf_link_hash_entry *h, | |
11437 | Elf_Internal_Sym *sym) | |
11438 | { | |
11439 | bfd *dynobj; | |
11440 | asection *sgot; | |
11441 | struct mips_got_info *g; | |
11442 | struct mips_elf_link_hash_table *htab; | |
020d7251 | 11443 | struct mips_elf_link_hash_entry *hmips; |
0a44bf69 RS |
11444 | |
11445 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 11446 | BFD_ASSERT (htab != NULL); |
0a44bf69 | 11447 | dynobj = elf_hash_table (info)->dynobj; |
020d7251 | 11448 | hmips = (struct mips_elf_link_hash_entry *) h; |
0a44bf69 | 11449 | |
1bbce132 | 11450 | if (h->plt.plist != NULL && h->plt.plist->mips_offset != MINUS_ONE) |
0a44bf69 | 11451 | { |
6d79d2ed | 11452 | bfd_byte *loc; |
1bbce132 | 11453 | bfd_vma plt_address, got_address, got_offset, branch_offset; |
0a44bf69 RS |
11454 | Elf_Internal_Rela rel; |
11455 | static const bfd_vma *plt_entry; | |
1bbce132 MR |
11456 | bfd_vma gotplt_index; |
11457 | bfd_vma plt_offset; | |
11458 | ||
11459 | plt_offset = htab->plt_header_size + h->plt.plist->mips_offset; | |
11460 | gotplt_index = h->plt.plist->gotplt_index; | |
0a44bf69 RS |
11461 | |
11462 | BFD_ASSERT (h->dynindx != -1); | |
ce558b89 | 11463 | BFD_ASSERT (htab->root.splt != NULL); |
1bbce132 | 11464 | BFD_ASSERT (gotplt_index != MINUS_ONE); |
ce558b89 | 11465 | BFD_ASSERT (plt_offset <= htab->root.splt->size); |
0a44bf69 RS |
11466 | |
11467 | /* Calculate the address of the .plt entry. */ | |
ce558b89 AM |
11468 | plt_address = (htab->root.splt->output_section->vma |
11469 | + htab->root.splt->output_offset | |
1bbce132 | 11470 | + plt_offset); |
0a44bf69 RS |
11471 | |
11472 | /* Calculate the address of the .got.plt entry. */ | |
ce558b89 AM |
11473 | got_address = (htab->root.sgotplt->output_section->vma |
11474 | + htab->root.sgotplt->output_offset | |
1bbce132 | 11475 | + gotplt_index * MIPS_ELF_GOT_SIZE (output_bfd)); |
0a44bf69 RS |
11476 | |
11477 | /* Calculate the offset of the .got.plt entry from | |
11478 | _GLOBAL_OFFSET_TABLE_. */ | |
11479 | got_offset = mips_elf_gotplt_index (info, h); | |
11480 | ||
11481 | /* Calculate the offset for the branch at the start of the PLT | |
11482 | entry. The branch jumps to the beginning of .plt. */ | |
1bbce132 | 11483 | branch_offset = -(plt_offset / 4 + 1) & 0xffff; |
0a44bf69 RS |
11484 | |
11485 | /* Fill in the initial value of the .got.plt entry. */ | |
11486 | bfd_put_32 (output_bfd, plt_address, | |
ce558b89 | 11487 | (htab->root.sgotplt->contents |
1bbce132 | 11488 | + gotplt_index * MIPS_ELF_GOT_SIZE (output_bfd))); |
0a44bf69 RS |
11489 | |
11490 | /* Find out where the .plt entry should go. */ | |
ce558b89 | 11491 | loc = htab->root.splt->contents + plt_offset; |
0a44bf69 | 11492 | |
0e1862bb | 11493 | if (bfd_link_pic (info)) |
0a44bf69 RS |
11494 | { |
11495 | plt_entry = mips_vxworks_shared_plt_entry; | |
11496 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
1bbce132 | 11497 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_index, loc + 4); |
0a44bf69 RS |
11498 | } |
11499 | else | |
11500 | { | |
11501 | bfd_vma got_address_high, got_address_low; | |
11502 | ||
11503 | plt_entry = mips_vxworks_exec_plt_entry; | |
11504 | got_address_high = ((got_address + 0x8000) >> 16) & 0xffff; | |
11505 | got_address_low = got_address & 0xffff; | |
11506 | ||
11507 | bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc); | |
1bbce132 | 11508 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_index, loc + 4); |
0a44bf69 RS |
11509 | bfd_put_32 (output_bfd, plt_entry[2] | got_address_high, loc + 8); |
11510 | bfd_put_32 (output_bfd, plt_entry[3] | got_address_low, loc + 12); | |
11511 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
11512 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
11513 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
11514 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
11515 | ||
11516 | loc = (htab->srelplt2->contents | |
1bbce132 | 11517 | + (gotplt_index * 3 + 2) * sizeof (Elf32_External_Rela)); |
0a44bf69 RS |
11518 | |
11519 | /* Emit a relocation for the .got.plt entry. */ | |
11520 | rel.r_offset = got_address; | |
11521 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
1bbce132 | 11522 | rel.r_addend = plt_offset; |
0a44bf69 RS |
11523 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); |
11524 | ||
11525 | /* Emit a relocation for the lui of %hi(<.got.plt slot>). */ | |
11526 | loc += sizeof (Elf32_External_Rela); | |
11527 | rel.r_offset = plt_address + 8; | |
11528 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
11529 | rel.r_addend = got_offset; | |
11530 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11531 | ||
11532 | /* Emit a relocation for the addiu of %lo(<.got.plt slot>). */ | |
11533 | loc += sizeof (Elf32_External_Rela); | |
11534 | rel.r_offset += 4; | |
11535 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
11536 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11537 | } | |
11538 | ||
11539 | /* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */ | |
ce558b89 | 11540 | loc = (htab->root.srelplt->contents |
1bbce132 | 11541 | + gotplt_index * sizeof (Elf32_External_Rela)); |
0a44bf69 RS |
11542 | rel.r_offset = got_address; |
11543 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_JUMP_SLOT); | |
11544 | rel.r_addend = 0; | |
11545 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11546 | ||
11547 | if (!h->def_regular) | |
11548 | sym->st_shndx = SHN_UNDEF; | |
11549 | } | |
11550 | ||
11551 | BFD_ASSERT (h->dynindx != -1 || h->forced_local); | |
11552 | ||
ce558b89 | 11553 | sgot = htab->root.sgot; |
a8028dd0 | 11554 | g = htab->got_info; |
0a44bf69 RS |
11555 | BFD_ASSERT (g != NULL); |
11556 | ||
11557 | /* See if this symbol has an entry in the GOT. */ | |
020d7251 | 11558 | if (hmips->global_got_area != GGA_NONE) |
0a44bf69 RS |
11559 | { |
11560 | bfd_vma offset; | |
11561 | Elf_Internal_Rela outrel; | |
11562 | bfd_byte *loc; | |
11563 | asection *s; | |
11564 | ||
11565 | /* Install the symbol value in the GOT. */ | |
13fbec83 | 11566 | offset = mips_elf_primary_global_got_index (output_bfd, info, h); |
0a44bf69 RS |
11567 | MIPS_ELF_PUT_WORD (output_bfd, sym->st_value, sgot->contents + offset); |
11568 | ||
11569 | /* Add a dynamic relocation for it. */ | |
0a1b45a2 | 11570 | s = mips_elf_rel_dyn_section (info, false); |
0a44bf69 RS |
11571 | loc = s->contents + (s->reloc_count++ * sizeof (Elf32_External_Rela)); |
11572 | outrel.r_offset = (sgot->output_section->vma | |
11573 | + sgot->output_offset | |
11574 | + offset); | |
11575 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_32); | |
11576 | outrel.r_addend = 0; | |
11577 | bfd_elf32_swap_reloca_out (dynobj, &outrel, loc); | |
11578 | } | |
11579 | ||
11580 | /* Emit a copy reloc, if needed. */ | |
11581 | if (h->needs_copy) | |
11582 | { | |
11583 | Elf_Internal_Rela rel; | |
5474d94f AM |
11584 | asection *srel; |
11585 | bfd_byte *loc; | |
0a44bf69 RS |
11586 | |
11587 | BFD_ASSERT (h->dynindx != -1); | |
11588 | ||
11589 | rel.r_offset = (h->root.u.def.section->output_section->vma | |
11590 | + h->root.u.def.section->output_offset | |
11591 | + h->root.u.def.value); | |
11592 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_COPY); | |
11593 | rel.r_addend = 0; | |
afbf7e8e | 11594 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
11595 | srel = htab->root.sreldynrelro; |
11596 | else | |
11597 | srel = htab->root.srelbss; | |
11598 | loc = srel->contents + srel->reloc_count * sizeof (Elf32_External_Rela); | |
11599 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11600 | ++srel->reloc_count; | |
0a44bf69 RS |
11601 | } |
11602 | ||
df58fc94 RS |
11603 | /* If this is a mips16/microMIPS symbol, force the value to be even. */ |
11604 | if (ELF_ST_IS_COMPRESSED (sym->st_other)) | |
0a44bf69 RS |
11605 | sym->st_value &= ~1; |
11606 | ||
0a1b45a2 | 11607 | return true; |
0a44bf69 RS |
11608 | } |
11609 | ||
861fb55a DJ |
11610 | /* Write out a plt0 entry to the beginning of .plt. */ |
11611 | ||
0a1b45a2 | 11612 | static bool |
861fb55a DJ |
11613 | mips_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) |
11614 | { | |
11615 | bfd_byte *loc; | |
11616 | bfd_vma gotplt_value, gotplt_value_high, gotplt_value_low; | |
11617 | static const bfd_vma *plt_entry; | |
11618 | struct mips_elf_link_hash_table *htab; | |
11619 | ||
11620 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
11621 | BFD_ASSERT (htab != NULL); |
11622 | ||
861fb55a | 11623 | if (ABI_64_P (output_bfd)) |
3734320d MF |
11624 | plt_entry = (htab->compact_branches |
11625 | ? mipsr6_n64_exec_plt0_entry_compact | |
11626 | : mips_n64_exec_plt0_entry); | |
861fb55a | 11627 | else if (ABI_N32_P (output_bfd)) |
3734320d MF |
11628 | plt_entry = (htab->compact_branches |
11629 | ? mipsr6_n32_exec_plt0_entry_compact | |
11630 | : mips_n32_exec_plt0_entry); | |
833794fc | 11631 | else if (!htab->plt_header_is_comp) |
3734320d MF |
11632 | plt_entry = (htab->compact_branches |
11633 | ? mipsr6_o32_exec_plt0_entry_compact | |
11634 | : mips_o32_exec_plt0_entry); | |
833794fc MR |
11635 | else if (htab->insn32) |
11636 | plt_entry = micromips_insn32_o32_exec_plt0_entry; | |
11637 | else | |
11638 | plt_entry = micromips_o32_exec_plt0_entry; | |
861fb55a DJ |
11639 | |
11640 | /* Calculate the value of .got.plt. */ | |
ce558b89 AM |
11641 | gotplt_value = (htab->root.sgotplt->output_section->vma |
11642 | + htab->root.sgotplt->output_offset); | |
861fb55a DJ |
11643 | gotplt_value_high = ((gotplt_value + 0x8000) >> 16) & 0xffff; |
11644 | gotplt_value_low = gotplt_value & 0xffff; | |
11645 | ||
11646 | /* The PLT sequence is not safe for N64 if .got.plt's address can | |
11647 | not be loaded in two instructions. */ | |
789ff5b6 MR |
11648 | if (ABI_64_P (output_bfd) |
11649 | && ((gotplt_value + 0x80008000) & ~(bfd_vma) 0xffffffff) != 0) | |
11650 | { | |
11651 | _bfd_error_handler | |
11652 | /* xgettext:c-format */ | |
11653 | (_("%pB: `%pA' start VMA of %#" PRIx64 " outside the 32-bit range " | |
11654 | "supported; consider using `-Ttext-segment=...'"), | |
11655 | output_bfd, | |
11656 | htab->root.sgotplt->output_section, | |
11657 | (int64_t) gotplt_value); | |
11658 | bfd_set_error (bfd_error_no_error); | |
0a1b45a2 | 11659 | return false; |
789ff5b6 | 11660 | } |
861fb55a DJ |
11661 | |
11662 | /* Install the PLT header. */ | |
ce558b89 | 11663 | loc = htab->root.splt->contents; |
1bbce132 MR |
11664 | if (plt_entry == micromips_o32_exec_plt0_entry) |
11665 | { | |
11666 | bfd_vma gotpc_offset; | |
11667 | bfd_vma loc_address; | |
11668 | size_t i; | |
11669 | ||
11670 | BFD_ASSERT (gotplt_value % 4 == 0); | |
11671 | ||
ce558b89 AM |
11672 | loc_address = (htab->root.splt->output_section->vma |
11673 | + htab->root.splt->output_offset); | |
1bbce132 MR |
11674 | gotpc_offset = gotplt_value - ((loc_address | 3) ^ 3); |
11675 | ||
11676 | /* ADDIUPC has a span of +/-16MB, check we're in range. */ | |
11677 | if (gotpc_offset + 0x1000000 >= 0x2000000) | |
11678 | { | |
4eca0228 | 11679 | _bfd_error_handler |
695344c0 | 11680 | /* xgettext:c-format */ |
2dcf00ce AM |
11681 | (_("%pB: `%pA' offset of %" PRId64 " from `%pA' " |
11682 | "beyond the range of ADDIUPC"), | |
1bbce132 | 11683 | output_bfd, |
ce558b89 | 11684 | htab->root.sgotplt->output_section, |
2dcf00ce | 11685 | (int64_t) gotpc_offset, |
c08bb8dd | 11686 | htab->root.splt->output_section); |
1bbce132 | 11687 | bfd_set_error (bfd_error_no_error); |
0a1b45a2 | 11688 | return false; |
1bbce132 MR |
11689 | } |
11690 | bfd_put_16 (output_bfd, | |
11691 | plt_entry[0] | ((gotpc_offset >> 18) & 0x7f), loc); | |
11692 | bfd_put_16 (output_bfd, (gotpc_offset >> 2) & 0xffff, loc + 2); | |
11693 | for (i = 2; i < ARRAY_SIZE (micromips_o32_exec_plt0_entry); i++) | |
11694 | bfd_put_16 (output_bfd, plt_entry[i], loc + (i * 2)); | |
11695 | } | |
833794fc MR |
11696 | else if (plt_entry == micromips_insn32_o32_exec_plt0_entry) |
11697 | { | |
11698 | size_t i; | |
11699 | ||
11700 | bfd_put_16 (output_bfd, plt_entry[0], loc); | |
11701 | bfd_put_16 (output_bfd, gotplt_value_high, loc + 2); | |
11702 | bfd_put_16 (output_bfd, plt_entry[2], loc + 4); | |
11703 | bfd_put_16 (output_bfd, gotplt_value_low, loc + 6); | |
11704 | bfd_put_16 (output_bfd, plt_entry[4], loc + 8); | |
11705 | bfd_put_16 (output_bfd, gotplt_value_low, loc + 10); | |
11706 | for (i = 6; i < ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry); i++) | |
11707 | bfd_put_16 (output_bfd, plt_entry[i], loc + (i * 2)); | |
11708 | } | |
1bbce132 MR |
11709 | else |
11710 | { | |
11711 | bfd_put_32 (output_bfd, plt_entry[0] | gotplt_value_high, loc); | |
11712 | bfd_put_32 (output_bfd, plt_entry[1] | gotplt_value_low, loc + 4); | |
11713 | bfd_put_32 (output_bfd, plt_entry[2] | gotplt_value_low, loc + 8); | |
11714 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
11715 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
11716 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
11717 | bfd_put_32 (output_bfd, plt_entry[6], loc + 24); | |
11718 | bfd_put_32 (output_bfd, plt_entry[7], loc + 28); | |
11719 | } | |
11720 | ||
0a1b45a2 | 11721 | return true; |
861fb55a DJ |
11722 | } |
11723 | ||
0a44bf69 RS |
11724 | /* Install the PLT header for a VxWorks executable and finalize the |
11725 | contents of .rela.plt.unloaded. */ | |
11726 | ||
11727 | static void | |
11728 | mips_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info) | |
11729 | { | |
11730 | Elf_Internal_Rela rela; | |
11731 | bfd_byte *loc; | |
11732 | bfd_vma got_value, got_value_high, got_value_low, plt_address; | |
11733 | static const bfd_vma *plt_entry; | |
11734 | struct mips_elf_link_hash_table *htab; | |
11735 | ||
11736 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 NC |
11737 | BFD_ASSERT (htab != NULL); |
11738 | ||
0a44bf69 RS |
11739 | plt_entry = mips_vxworks_exec_plt0_entry; |
11740 | ||
11741 | /* Calculate the value of _GLOBAL_OFFSET_TABLE_. */ | |
11742 | got_value = (htab->root.hgot->root.u.def.section->output_section->vma | |
11743 | + htab->root.hgot->root.u.def.section->output_offset | |
11744 | + htab->root.hgot->root.u.def.value); | |
11745 | ||
11746 | got_value_high = ((got_value + 0x8000) >> 16) & 0xffff; | |
11747 | got_value_low = got_value & 0xffff; | |
11748 | ||
11749 | /* Calculate the address of the PLT header. */ | |
ce558b89 AM |
11750 | plt_address = (htab->root.splt->output_section->vma |
11751 | + htab->root.splt->output_offset); | |
0a44bf69 RS |
11752 | |
11753 | /* Install the PLT header. */ | |
ce558b89 | 11754 | loc = htab->root.splt->contents; |
0a44bf69 RS |
11755 | bfd_put_32 (output_bfd, plt_entry[0] | got_value_high, loc); |
11756 | bfd_put_32 (output_bfd, plt_entry[1] | got_value_low, loc + 4); | |
11757 | bfd_put_32 (output_bfd, plt_entry[2], loc + 8); | |
11758 | bfd_put_32 (output_bfd, plt_entry[3], loc + 12); | |
11759 | bfd_put_32 (output_bfd, plt_entry[4], loc + 16); | |
11760 | bfd_put_32 (output_bfd, plt_entry[5], loc + 20); | |
11761 | ||
11762 | /* Output the relocation for the lui of %hi(_GLOBAL_OFFSET_TABLE_). */ | |
11763 | loc = htab->srelplt2->contents; | |
11764 | rela.r_offset = plt_address; | |
11765 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
11766 | rela.r_addend = 0; | |
11767 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
11768 | loc += sizeof (Elf32_External_Rela); | |
11769 | ||
11770 | /* Output the relocation for the following addiu of | |
11771 | %lo(_GLOBAL_OFFSET_TABLE_). */ | |
11772 | rela.r_offset += 4; | |
11773 | rela.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
11774 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
11775 | loc += sizeof (Elf32_External_Rela); | |
11776 | ||
11777 | /* Fix up the remaining relocations. They may have the wrong | |
11778 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
11779 | in which symbols were output. */ | |
11780 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
11781 | { | |
11782 | Elf_Internal_Rela rel; | |
11783 | ||
11784 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
11785 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32); | |
11786 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11787 | loc += sizeof (Elf32_External_Rela); | |
11788 | ||
11789 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
11790 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_HI16); | |
11791 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11792 | loc += sizeof (Elf32_External_Rela); | |
11793 | ||
11794 | bfd_elf32_swap_reloca_in (output_bfd, loc, &rel); | |
11795 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_MIPS_LO16); | |
11796 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
11797 | loc += sizeof (Elf32_External_Rela); | |
11798 | } | |
11799 | } | |
11800 | ||
11801 | /* Install the PLT header for a VxWorks shared library. */ | |
11802 | ||
11803 | static void | |
11804 | mips_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info) | |
11805 | { | |
11806 | unsigned int i; | |
11807 | struct mips_elf_link_hash_table *htab; | |
11808 | ||
11809 | htab = mips_elf_hash_table (info); | |
4dfe6ac6 | 11810 | BFD_ASSERT (htab != NULL); |
0a44bf69 RS |
11811 | |
11812 | /* We just need to copy the entry byte-by-byte. */ | |
11813 | for (i = 0; i < ARRAY_SIZE (mips_vxworks_shared_plt0_entry); i++) | |
11814 | bfd_put_32 (output_bfd, mips_vxworks_shared_plt0_entry[i], | |
ce558b89 | 11815 | htab->root.splt->contents + i * 4); |
0a44bf69 RS |
11816 | } |
11817 | ||
b49e97c9 TS |
11818 | /* Finish up the dynamic sections. */ |
11819 | ||
0a1b45a2 | 11820 | bool |
9719ad41 RS |
11821 | _bfd_mips_elf_finish_dynamic_sections (bfd *output_bfd, |
11822 | struct bfd_link_info *info) | |
b49e97c9 TS |
11823 | { |
11824 | bfd *dynobj; | |
11825 | asection *sdyn; | |
11826 | asection *sgot; | |
f4416af6 | 11827 | struct mips_got_info *gg, *g; |
0a44bf69 | 11828 | struct mips_elf_link_hash_table *htab; |
b49e97c9 | 11829 | |
0a44bf69 | 11830 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
11831 | BFD_ASSERT (htab != NULL); |
11832 | ||
b49e97c9 TS |
11833 | dynobj = elf_hash_table (info)->dynobj; |
11834 | ||
3d4d4302 | 11835 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
b49e97c9 | 11836 | |
ce558b89 | 11837 | sgot = htab->root.sgot; |
23cc69b6 | 11838 | gg = htab->got_info; |
b49e97c9 TS |
11839 | |
11840 | if (elf_hash_table (info)->dynamic_sections_created) | |
11841 | { | |
11842 | bfd_byte *b; | |
943284cc | 11843 | int dyn_to_skip = 0, dyn_skipped = 0; |
b49e97c9 TS |
11844 | |
11845 | BFD_ASSERT (sdyn != NULL); | |
23cc69b6 RS |
11846 | BFD_ASSERT (gg != NULL); |
11847 | ||
0a1b45a2 | 11848 | g = mips_elf_bfd_got (output_bfd, false); |
b49e97c9 TS |
11849 | BFD_ASSERT (g != NULL); |
11850 | ||
11851 | for (b = sdyn->contents; | |
eea6121a | 11852 | b < sdyn->contents + sdyn->size; |
b49e97c9 TS |
11853 | b += MIPS_ELF_DYN_SIZE (dynobj)) |
11854 | { | |
11855 | Elf_Internal_Dyn dyn; | |
11856 | const char *name; | |
11857 | size_t elemsize; | |
11858 | asection *s; | |
0a1b45a2 | 11859 | bool swap_out_p; |
b49e97c9 TS |
11860 | |
11861 | /* Read in the current dynamic entry. */ | |
11862 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
11863 | ||
11864 | /* Assume that we're going to modify it and write it out. */ | |
0a1b45a2 | 11865 | swap_out_p = true; |
b49e97c9 TS |
11866 | |
11867 | switch (dyn.d_tag) | |
11868 | { | |
11869 | case DT_RELENT: | |
b49e97c9 TS |
11870 | dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj); |
11871 | break; | |
11872 | ||
0a44bf69 | 11873 | case DT_RELAENT: |
90c14f0c | 11874 | BFD_ASSERT (htab->root.target_os == is_vxworks); |
0a44bf69 RS |
11875 | dyn.d_un.d_val = MIPS_ELF_RELA_SIZE (dynobj); |
11876 | break; | |
11877 | ||
b49e97c9 TS |
11878 | case DT_STRSZ: |
11879 | /* Rewrite DT_STRSZ. */ | |
11880 | dyn.d_un.d_val = | |
11881 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); | |
11882 | break; | |
11883 | ||
11884 | case DT_PLTGOT: | |
ce558b89 | 11885 | s = htab->root.sgot; |
861fb55a DJ |
11886 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
11887 | break; | |
11888 | ||
11889 | case DT_MIPS_PLTGOT: | |
ce558b89 | 11890 | s = htab->root.sgotplt; |
861fb55a | 11891 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
b49e97c9 TS |
11892 | break; |
11893 | ||
11894 | case DT_MIPS_RLD_VERSION: | |
11895 | dyn.d_un.d_val = 1; /* XXX */ | |
11896 | break; | |
11897 | ||
11898 | case DT_MIPS_FLAGS: | |
11899 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ | |
11900 | break; | |
11901 | ||
b49e97c9 | 11902 | case DT_MIPS_TIME_STAMP: |
6edfbbad DJ |
11903 | { |
11904 | time_t t; | |
11905 | time (&t); | |
11906 | dyn.d_un.d_val = t; | |
11907 | } | |
b49e97c9 TS |
11908 | break; |
11909 | ||
11910 | case DT_MIPS_ICHECKSUM: | |
11911 | /* XXX FIXME: */ | |
0a1b45a2 | 11912 | swap_out_p = false; |
b49e97c9 TS |
11913 | break; |
11914 | ||
11915 | case DT_MIPS_IVERSION: | |
11916 | /* XXX FIXME: */ | |
0a1b45a2 | 11917 | swap_out_p = false; |
b49e97c9 TS |
11918 | break; |
11919 | ||
11920 | case DT_MIPS_BASE_ADDRESS: | |
11921 | s = output_bfd->sections; | |
11922 | BFD_ASSERT (s != NULL); | |
11923 | dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; | |
11924 | break; | |
11925 | ||
11926 | case DT_MIPS_LOCAL_GOTNO: | |
11927 | dyn.d_un.d_val = g->local_gotno; | |
11928 | break; | |
11929 | ||
11930 | case DT_MIPS_UNREFEXTNO: | |
11931 | /* The index into the dynamic symbol table which is the | |
11932 | entry of the first external symbol that is not | |
11933 | referenced within the same object. */ | |
11934 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; | |
11935 | break; | |
11936 | ||
11937 | case DT_MIPS_GOTSYM: | |
d222d210 | 11938 | if (htab->global_gotsym) |
b49e97c9 | 11939 | { |
d222d210 | 11940 | dyn.d_un.d_val = htab->global_gotsym->dynindx; |
b49e97c9 TS |
11941 | break; |
11942 | } | |
11943 | /* In case if we don't have global got symbols we default | |
11944 | to setting DT_MIPS_GOTSYM to the same value as | |
1a0670f3 AM |
11945 | DT_MIPS_SYMTABNO. */ |
11946 | /* Fall through. */ | |
b49e97c9 TS |
11947 | |
11948 | case DT_MIPS_SYMTABNO: | |
11949 | name = ".dynsym"; | |
11950 | elemsize = MIPS_ELF_SYM_SIZE (output_bfd); | |
4ade44b7 | 11951 | s = bfd_get_linker_section (dynobj, name); |
b49e97c9 | 11952 | |
131e2f8e MF |
11953 | if (s != NULL) |
11954 | dyn.d_un.d_val = s->size / elemsize; | |
11955 | else | |
11956 | dyn.d_un.d_val = 0; | |
b49e97c9 TS |
11957 | break; |
11958 | ||
11959 | case DT_MIPS_HIPAGENO: | |
861fb55a | 11960 | dyn.d_un.d_val = g->local_gotno - htab->reserved_gotno; |
b49e97c9 TS |
11961 | break; |
11962 | ||
11963 | case DT_MIPS_RLD_MAP: | |
b4082c70 DD |
11964 | { |
11965 | struct elf_link_hash_entry *h; | |
11966 | h = mips_elf_hash_table (info)->rld_symbol; | |
11967 | if (!h) | |
11968 | { | |
11969 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
0a1b45a2 | 11970 | swap_out_p = false; |
b4082c70 DD |
11971 | break; |
11972 | } | |
11973 | s = h->root.u.def.section; | |
a5499fa4 MF |
11974 | |
11975 | /* The MIPS_RLD_MAP tag stores the absolute address of the | |
11976 | debug pointer. */ | |
b4082c70 DD |
11977 | dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset |
11978 | + h->root.u.def.value); | |
11979 | } | |
b49e97c9 TS |
11980 | break; |
11981 | ||
a5499fa4 MF |
11982 | case DT_MIPS_RLD_MAP_REL: |
11983 | { | |
11984 | struct elf_link_hash_entry *h; | |
11985 | bfd_vma dt_addr, rld_addr; | |
11986 | h = mips_elf_hash_table (info)->rld_symbol; | |
11987 | if (!h) | |
11988 | { | |
11989 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
0a1b45a2 | 11990 | swap_out_p = false; |
a5499fa4 MF |
11991 | break; |
11992 | } | |
11993 | s = h->root.u.def.section; | |
11994 | ||
11995 | /* The MIPS_RLD_MAP_REL tag stores the offset to the debug | |
11996 | pointer, relative to the address of the tag. */ | |
11997 | dt_addr = (sdyn->output_section->vma + sdyn->output_offset | |
d5cff5df | 11998 | + (b - sdyn->contents)); |
a5499fa4 MF |
11999 | rld_addr = (s->output_section->vma + s->output_offset |
12000 | + h->root.u.def.value); | |
12001 | dyn.d_un.d_ptr = rld_addr - dt_addr; | |
12002 | } | |
12003 | break; | |
12004 | ||
b49e97c9 TS |
12005 | case DT_MIPS_OPTIONS: |
12006 | s = (bfd_get_section_by_name | |
12007 | (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd))); | |
12008 | dyn.d_un.d_ptr = s->vma; | |
12009 | break; | |
12010 | ||
0a44bf69 | 12011 | case DT_PLTREL: |
861fb55a | 12012 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
90c14f0c | 12013 | if (htab->root.target_os == is_vxworks) |
861fb55a DJ |
12014 | dyn.d_un.d_val = DT_RELA; |
12015 | else | |
12016 | dyn.d_un.d_val = DT_REL; | |
0a44bf69 RS |
12017 | break; |
12018 | ||
12019 | case DT_PLTRELSZ: | |
861fb55a | 12020 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
ce558b89 | 12021 | dyn.d_un.d_val = htab->root.srelplt->size; |
0a44bf69 RS |
12022 | break; |
12023 | ||
12024 | case DT_JMPREL: | |
861fb55a | 12025 | BFD_ASSERT (htab->use_plts_and_copy_relocs); |
ce558b89 AM |
12026 | dyn.d_un.d_ptr = (htab->root.srelplt->output_section->vma |
12027 | + htab->root.srelplt->output_offset); | |
0a44bf69 RS |
12028 | break; |
12029 | ||
943284cc DJ |
12030 | case DT_TEXTREL: |
12031 | /* If we didn't need any text relocations after all, delete | |
12032 | the dynamic tag. */ | |
12033 | if (!(info->flags & DF_TEXTREL)) | |
12034 | { | |
12035 | dyn_to_skip = MIPS_ELF_DYN_SIZE (dynobj); | |
0a1b45a2 | 12036 | swap_out_p = false; |
943284cc DJ |
12037 | } |
12038 | break; | |
12039 | ||
12040 | case DT_FLAGS: | |
12041 | /* If we didn't need any text relocations after all, clear | |
12042 | DF_TEXTREL from DT_FLAGS. */ | |
12043 | if (!(info->flags & DF_TEXTREL)) | |
12044 | dyn.d_un.d_val &= ~DF_TEXTREL; | |
12045 | else | |
0a1b45a2 | 12046 | swap_out_p = false; |
943284cc DJ |
12047 | break; |
12048 | ||
f16a9783 MS |
12049 | case DT_MIPS_XHASH: |
12050 | name = ".MIPS.xhash"; | |
12051 | s = bfd_get_linker_section (dynobj, name); | |
12052 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
12053 | break; | |
12054 | ||
b49e97c9 | 12055 | default: |
0a1b45a2 | 12056 | swap_out_p = false; |
90c14f0c | 12057 | if (htab->root.target_os == is_vxworks |
7a2b07ff | 12058 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) |
0a1b45a2 | 12059 | swap_out_p = true; |
b49e97c9 TS |
12060 | break; |
12061 | } | |
12062 | ||
943284cc | 12063 | if (swap_out_p || dyn_skipped) |
b49e97c9 | 12064 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) |
943284cc DJ |
12065 | (dynobj, &dyn, b - dyn_skipped); |
12066 | ||
12067 | if (dyn_to_skip) | |
12068 | { | |
12069 | dyn_skipped += dyn_to_skip; | |
12070 | dyn_to_skip = 0; | |
12071 | } | |
b49e97c9 | 12072 | } |
943284cc DJ |
12073 | |
12074 | /* Wipe out any trailing entries if we shifted down a dynamic tag. */ | |
12075 | if (dyn_skipped > 0) | |
12076 | memset (b - dyn_skipped, 0, dyn_skipped); | |
b49e97c9 TS |
12077 | } |
12078 | ||
b55fd4d4 DJ |
12079 | if (sgot != NULL && sgot->size > 0 |
12080 | && !bfd_is_abs_section (sgot->output_section)) | |
b49e97c9 | 12081 | { |
90c14f0c | 12082 | if (htab->root.target_os == is_vxworks) |
0a44bf69 RS |
12083 | { |
12084 | /* The first entry of the global offset table points to the | |
12085 | ".dynamic" section. The second is initialized by the | |
12086 | loader and contains the shared library identifier. | |
12087 | The third is also initialized by the loader and points | |
12088 | to the lazy resolution stub. */ | |
12089 | MIPS_ELF_PUT_WORD (output_bfd, | |
12090 | sdyn->output_offset + sdyn->output_section->vma, | |
12091 | sgot->contents); | |
12092 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
12093 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); | |
12094 | MIPS_ELF_PUT_WORD (output_bfd, 0, | |
12095 | sgot->contents | |
12096 | + 2 * MIPS_ELF_GOT_SIZE (output_bfd)); | |
12097 | } | |
12098 | else | |
12099 | { | |
12100 | /* The first entry of the global offset table will be filled at | |
12101 | runtime. The second entry will be used by some runtime loaders. | |
12102 | This isn't the case of IRIX rld. */ | |
12103 | MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents); | |
51e38d68 | 12104 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
0a44bf69 RS |
12105 | sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd)); |
12106 | } | |
b49e97c9 | 12107 | |
54938e2a TS |
12108 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize |
12109 | = MIPS_ELF_GOT_SIZE (output_bfd); | |
12110 | } | |
b49e97c9 | 12111 | |
f4416af6 AO |
12112 | /* Generate dynamic relocations for the non-primary gots. */ |
12113 | if (gg != NULL && gg->next) | |
12114 | { | |
12115 | Elf_Internal_Rela rel[3]; | |
12116 | bfd_vma addend = 0; | |
12117 | ||
12118 | memset (rel, 0, sizeof (rel)); | |
12119 | rel[0].r_info = ELF_R_INFO (output_bfd, 0, R_MIPS_REL32); | |
12120 | ||
12121 | for (g = gg->next; g->next != gg; g = g->next) | |
12122 | { | |
91d6fa6a | 12123 | bfd_vma got_index = g->next->local_gotno + g->next->global_gotno |
0f20cc35 | 12124 | + g->next->tls_gotno; |
f4416af6 | 12125 | |
9719ad41 | 12126 | MIPS_ELF_PUT_WORD (output_bfd, 0, sgot->contents |
91d6fa6a | 12127 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
51e38d68 RS |
12128 | MIPS_ELF_PUT_WORD (output_bfd, MIPS_ELF_GNU_GOT1_MASK (output_bfd), |
12129 | sgot->contents | |
91d6fa6a | 12130 | + got_index++ * MIPS_ELF_GOT_SIZE (output_bfd)); |
f4416af6 | 12131 | |
0e1862bb | 12132 | if (! bfd_link_pic (info)) |
f4416af6 AO |
12133 | continue; |
12134 | ||
cb22ccf4 | 12135 | for (; got_index < g->local_gotno; got_index++) |
f4416af6 | 12136 | { |
cb22ccf4 KCY |
12137 | if (got_index >= g->assigned_low_gotno |
12138 | && got_index <= g->assigned_high_gotno) | |
12139 | continue; | |
12140 | ||
f4416af6 | 12141 | rel[0].r_offset = rel[1].r_offset = rel[2].r_offset |
cb22ccf4 | 12142 | = got_index * MIPS_ELF_GOT_SIZE (output_bfd); |
f4416af6 AO |
12143 | if (!(mips_elf_create_dynamic_relocation |
12144 | (output_bfd, info, rel, NULL, | |
12145 | bfd_abs_section_ptr, | |
12146 | 0, &addend, sgot))) | |
0a1b45a2 | 12147 | return false; |
f4416af6 AO |
12148 | BFD_ASSERT (addend == 0); |
12149 | } | |
12150 | } | |
12151 | } | |
12152 | ||
3133ddbf DJ |
12153 | /* The generation of dynamic relocations for the non-primary gots |
12154 | adds more dynamic relocations. We cannot count them until | |
12155 | here. */ | |
12156 | ||
12157 | if (elf_hash_table (info)->dynamic_sections_created) | |
12158 | { | |
12159 | bfd_byte *b; | |
0a1b45a2 | 12160 | bool swap_out_p; |
3133ddbf DJ |
12161 | |
12162 | BFD_ASSERT (sdyn != NULL); | |
12163 | ||
12164 | for (b = sdyn->contents; | |
12165 | b < sdyn->contents + sdyn->size; | |
12166 | b += MIPS_ELF_DYN_SIZE (dynobj)) | |
12167 | { | |
12168 | Elf_Internal_Dyn dyn; | |
12169 | asection *s; | |
12170 | ||
12171 | /* Read in the current dynamic entry. */ | |
12172 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); | |
12173 | ||
12174 | /* Assume that we're going to modify it and write it out. */ | |
0a1b45a2 | 12175 | swap_out_p = true; |
3133ddbf DJ |
12176 | |
12177 | switch (dyn.d_tag) | |
12178 | { | |
12179 | case DT_RELSZ: | |
12180 | /* Reduce DT_RELSZ to account for any relocations we | |
12181 | decided not to make. This is for the n64 irix rld, | |
12182 | which doesn't seem to apply any relocations if there | |
12183 | are trailing null entries. */ | |
0a1b45a2 | 12184 | s = mips_elf_rel_dyn_section (info, false); |
3133ddbf DJ |
12185 | dyn.d_un.d_val = (s->reloc_count |
12186 | * (ABI_64_P (output_bfd) | |
12187 | ? sizeof (Elf64_Mips_External_Rel) | |
12188 | : sizeof (Elf32_External_Rel))); | |
bcfdf036 RS |
12189 | /* Adjust the section size too. Tools like the prelinker |
12190 | can reasonably expect the values to the same. */ | |
db841b6f | 12191 | BFD_ASSERT (!bfd_is_abs_section (s->output_section)); |
bcfdf036 RS |
12192 | elf_section_data (s->output_section)->this_hdr.sh_size |
12193 | = dyn.d_un.d_val; | |
3133ddbf DJ |
12194 | break; |
12195 | ||
12196 | default: | |
0a1b45a2 | 12197 | swap_out_p = false; |
3133ddbf DJ |
12198 | break; |
12199 | } | |
12200 | ||
12201 | if (swap_out_p) | |
12202 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) | |
12203 | (dynobj, &dyn, b); | |
12204 | } | |
12205 | } | |
12206 | ||
b49e97c9 | 12207 | { |
b49e97c9 TS |
12208 | asection *s; |
12209 | Elf32_compact_rel cpt; | |
12210 | ||
b49e97c9 TS |
12211 | if (SGI_COMPAT (output_bfd)) |
12212 | { | |
12213 | /* Write .compact_rel section out. */ | |
3d4d4302 | 12214 | s = bfd_get_linker_section (dynobj, ".compact_rel"); |
b49e97c9 TS |
12215 | if (s != NULL) |
12216 | { | |
12217 | cpt.id1 = 1; | |
12218 | cpt.num = s->reloc_count; | |
12219 | cpt.id2 = 2; | |
12220 | cpt.offset = (s->output_section->filepos | |
12221 | + sizeof (Elf32_External_compact_rel)); | |
12222 | cpt.reserved0 = 0; | |
12223 | cpt.reserved1 = 0; | |
12224 | bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, | |
12225 | ((Elf32_External_compact_rel *) | |
12226 | s->contents)); | |
12227 | ||
12228 | /* Clean up a dummy stub function entry in .text. */ | |
55e61b8a AM |
12229 | if (htab->sstubs != NULL |
12230 | && htab->sstubs->contents != NULL) | |
b49e97c9 TS |
12231 | { |
12232 | file_ptr dummy_offset; | |
12233 | ||
4e41d0d7 RS |
12234 | BFD_ASSERT (htab->sstubs->size >= htab->function_stub_size); |
12235 | dummy_offset = htab->sstubs->size - htab->function_stub_size; | |
12236 | memset (htab->sstubs->contents + dummy_offset, 0, | |
5108fc1b | 12237 | htab->function_stub_size); |
b49e97c9 TS |
12238 | } |
12239 | } | |
12240 | } | |
12241 | ||
0a44bf69 RS |
12242 | /* The psABI says that the dynamic relocations must be sorted in |
12243 | increasing order of r_symndx. The VxWorks EABI doesn't require | |
12244 | this, and because the code below handles REL rather than RELA | |
12245 | relocations, using it for VxWorks would be outright harmful. */ | |
90c14f0c | 12246 | if (htab->root.target_os != is_vxworks) |
b49e97c9 | 12247 | { |
0a1b45a2 | 12248 | s = mips_elf_rel_dyn_section (info, false); |
0a44bf69 RS |
12249 | if (s != NULL |
12250 | && s->size > (bfd_vma)2 * MIPS_ELF_REL_SIZE (output_bfd)) | |
12251 | { | |
12252 | reldyn_sorting_bfd = output_bfd; | |
b49e97c9 | 12253 | |
0a44bf69 RS |
12254 | if (ABI_64_P (output_bfd)) |
12255 | qsort ((Elf64_External_Rel *) s->contents + 1, | |
12256 | s->reloc_count - 1, sizeof (Elf64_Mips_External_Rel), | |
12257 | sort_dynamic_relocs_64); | |
12258 | else | |
12259 | qsort ((Elf32_External_Rel *) s->contents + 1, | |
12260 | s->reloc_count - 1, sizeof (Elf32_External_Rel), | |
12261 | sort_dynamic_relocs); | |
12262 | } | |
b49e97c9 | 12263 | } |
b49e97c9 TS |
12264 | } |
12265 | ||
ce558b89 | 12266 | if (htab->root.splt && htab->root.splt->size > 0) |
0a44bf69 | 12267 | { |
90c14f0c | 12268 | if (htab->root.target_os == is_vxworks) |
861fb55a | 12269 | { |
0e1862bb | 12270 | if (bfd_link_pic (info)) |
861fb55a DJ |
12271 | mips_vxworks_finish_shared_plt (output_bfd, info); |
12272 | else | |
12273 | mips_vxworks_finish_exec_plt (output_bfd, info); | |
12274 | } | |
0a44bf69 | 12275 | else |
861fb55a | 12276 | { |
0e1862bb | 12277 | BFD_ASSERT (!bfd_link_pic (info)); |
1bbce132 | 12278 | if (!mips_finish_exec_plt (output_bfd, info)) |
0a1b45a2 | 12279 | return false; |
861fb55a | 12280 | } |
0a44bf69 | 12281 | } |
0a1b45a2 | 12282 | return true; |
b49e97c9 TS |
12283 | } |
12284 | ||
b49e97c9 | 12285 | |
64543e1a RS |
12286 | /* Set ABFD's EF_MIPS_ARCH and EF_MIPS_MACH flags. */ |
12287 | ||
12288 | static void | |
9719ad41 | 12289 | mips_set_isa_flags (bfd *abfd) |
b49e97c9 | 12290 | { |
64543e1a | 12291 | flagword val; |
b49e97c9 TS |
12292 | |
12293 | switch (bfd_get_mach (abfd)) | |
12294 | { | |
12295 | default: | |
c7c860d2 YS |
12296 | if (ABI_N32_P (abfd) || ABI_64_P (abfd)) |
12297 | val = E_MIPS_ARCH_3; | |
12298 | else | |
12299 | val = E_MIPS_ARCH_1; | |
12300 | break; | |
12301 | ||
b49e97c9 TS |
12302 | case bfd_mach_mips3000: |
12303 | val = E_MIPS_ARCH_1; | |
12304 | break; | |
12305 | ||
12306 | case bfd_mach_mips3900: | |
12307 | val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; | |
12308 | break; | |
12309 | ||
12310 | case bfd_mach_mips6000: | |
12311 | val = E_MIPS_ARCH_2; | |
12312 | break; | |
12313 | ||
b417536f MR |
12314 | case bfd_mach_mips4010: |
12315 | val = E_MIPS_ARCH_2 | E_MIPS_MACH_4010; | |
12316 | break; | |
12317 | ||
b49e97c9 TS |
12318 | case bfd_mach_mips4000: |
12319 | case bfd_mach_mips4300: | |
12320 | case bfd_mach_mips4400: | |
12321 | case bfd_mach_mips4600: | |
12322 | val = E_MIPS_ARCH_3; | |
12323 | break; | |
12324 | ||
b49e97c9 TS |
12325 | case bfd_mach_mips4100: |
12326 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; | |
12327 | break; | |
12328 | ||
12329 | case bfd_mach_mips4111: | |
12330 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; | |
12331 | break; | |
12332 | ||
00707a0e RS |
12333 | case bfd_mach_mips4120: |
12334 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120; | |
12335 | break; | |
12336 | ||
b49e97c9 TS |
12337 | case bfd_mach_mips4650: |
12338 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; | |
12339 | break; | |
12340 | ||
00707a0e RS |
12341 | case bfd_mach_mips5400: |
12342 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400; | |
12343 | break; | |
12344 | ||
12345 | case bfd_mach_mips5500: | |
12346 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500; | |
12347 | break; | |
12348 | ||
e407c74b NC |
12349 | case bfd_mach_mips5900: |
12350 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_5900; | |
12351 | break; | |
12352 | ||
0d2e43ed ILT |
12353 | case bfd_mach_mips9000: |
12354 | val = E_MIPS_ARCH_4 | E_MIPS_MACH_9000; | |
12355 | break; | |
12356 | ||
b49e97c9 | 12357 | case bfd_mach_mips5000: |
5a7ea749 | 12358 | case bfd_mach_mips7000: |
b49e97c9 TS |
12359 | case bfd_mach_mips8000: |
12360 | case bfd_mach_mips10000: | |
12361 | case bfd_mach_mips12000: | |
3aa3176b TS |
12362 | case bfd_mach_mips14000: |
12363 | case bfd_mach_mips16000: | |
b49e97c9 TS |
12364 | val = E_MIPS_ARCH_4; |
12365 | break; | |
12366 | ||
12367 | case bfd_mach_mips5: | |
12368 | val = E_MIPS_ARCH_5; | |
12369 | break; | |
12370 | ||
350cc38d MS |
12371 | case bfd_mach_mips_loongson_2e: |
12372 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2E; | |
12373 | break; | |
12374 | ||
12375 | case bfd_mach_mips_loongson_2f: | |
12376 | val = E_MIPS_ARCH_3 | E_MIPS_MACH_LS2F; | |
12377 | break; | |
12378 | ||
b49e97c9 TS |
12379 | case bfd_mach_mips_sb1: |
12380 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1; | |
12381 | break; | |
12382 | ||
ac8cb70f CX |
12383 | case bfd_mach_mips_gs464: |
12384 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_GS464; | |
d051516a NC |
12385 | break; |
12386 | ||
bd782c07 CX |
12387 | case bfd_mach_mips_gs464e: |
12388 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_GS464E; | |
12389 | break; | |
12390 | ||
9108bc33 CX |
12391 | case bfd_mach_mips_gs264e: |
12392 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_GS264E; | |
12393 | break; | |
12394 | ||
6f179bd0 | 12395 | case bfd_mach_mips_octeon: |
dd6a37e7 | 12396 | case bfd_mach_mips_octeonp: |
6f179bd0 AN |
12397 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON; |
12398 | break; | |
12399 | ||
2c629856 N |
12400 | case bfd_mach_mips_octeon3: |
12401 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON3; | |
12402 | break; | |
12403 | ||
52b6b6b9 JM |
12404 | case bfd_mach_mips_xlr: |
12405 | val = E_MIPS_ARCH_64 | E_MIPS_MACH_XLR; | |
12406 | break; | |
12407 | ||
432233b3 AP |
12408 | case bfd_mach_mips_octeon2: |
12409 | val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_OCTEON2; | |
12410 | break; | |
12411 | ||
b49e97c9 TS |
12412 | case bfd_mach_mipsisa32: |
12413 | val = E_MIPS_ARCH_32; | |
12414 | break; | |
12415 | ||
12416 | case bfd_mach_mipsisa64: | |
12417 | val = E_MIPS_ARCH_64; | |
af7ee8bf CD |
12418 | break; |
12419 | ||
12420 | case bfd_mach_mipsisa32r2: | |
ae52f483 AB |
12421 | case bfd_mach_mipsisa32r3: |
12422 | case bfd_mach_mipsisa32r5: | |
af7ee8bf CD |
12423 | val = E_MIPS_ARCH_32R2; |
12424 | break; | |
5f74bc13 | 12425 | |
38bf472a MR |
12426 | case bfd_mach_mips_interaptiv_mr2: |
12427 | val = E_MIPS_ARCH_32R2 | E_MIPS_MACH_IAMR2; | |
12428 | break; | |
12429 | ||
5f74bc13 | 12430 | case bfd_mach_mipsisa64r2: |
ae52f483 AB |
12431 | case bfd_mach_mipsisa64r3: |
12432 | case bfd_mach_mipsisa64r5: | |
5f74bc13 CD |
12433 | val = E_MIPS_ARCH_64R2; |
12434 | break; | |
7361da2c AB |
12435 | |
12436 | case bfd_mach_mipsisa32r6: | |
12437 | val = E_MIPS_ARCH_32R6; | |
12438 | break; | |
12439 | ||
12440 | case bfd_mach_mipsisa64r6: | |
12441 | val = E_MIPS_ARCH_64R6; | |
12442 | break; | |
b49e97c9 | 12443 | } |
b49e97c9 TS |
12444 | elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); |
12445 | elf_elfheader (abfd)->e_flags |= val; | |
12446 | ||
64543e1a RS |
12447 | } |
12448 | ||
12449 | ||
28dbcedc AM |
12450 | /* Whether to sort relocs output by ld -r or ld --emit-relocs, by r_offset. |
12451 | Don't do so for code sections. We want to keep ordering of HI16/LO16 | |
12452 | as is. On the other hand, elf-eh-frame.c processing requires .eh_frame | |
12453 | relocs to be sorted. */ | |
12454 | ||
0a1b45a2 | 12455 | bool |
28dbcedc AM |
12456 | _bfd_mips_elf_sort_relocs_p (asection *sec) |
12457 | { | |
12458 | return (sec->flags & SEC_CODE) == 0; | |
12459 | } | |
12460 | ||
12461 | ||
64543e1a RS |
12462 | /* The final processing done just before writing out a MIPS ELF object |
12463 | file. This gets the MIPS architecture right based on the machine | |
12464 | number. This is used by both the 32-bit and the 64-bit ABI. */ | |
12465 | ||
12466 | void | |
cc364be6 | 12467 | _bfd_mips_final_write_processing (bfd *abfd) |
64543e1a RS |
12468 | { |
12469 | unsigned int i; | |
12470 | Elf_Internal_Shdr **hdrpp; | |
12471 | const char *name; | |
12472 | asection *sec; | |
12473 | ||
12474 | /* Keep the existing EF_MIPS_MACH and EF_MIPS_ARCH flags if the former | |
12475 | is nonzero. This is for compatibility with old objects, which used | |
12476 | a combination of a 32-bit EF_MIPS_ARCH and a 64-bit EF_MIPS_MACH. */ | |
12477 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_MACH) == 0) | |
12478 | mips_set_isa_flags (abfd); | |
12479 | ||
b49e97c9 TS |
12480 | /* Set the sh_info field for .gptab sections and other appropriate |
12481 | info for each special section. */ | |
12482 | for (i = 1, hdrpp = elf_elfsections (abfd) + 1; | |
12483 | i < elf_numsections (abfd); | |
12484 | i++, hdrpp++) | |
12485 | { | |
12486 | switch ((*hdrpp)->sh_type) | |
12487 | { | |
12488 | case SHT_MIPS_MSYM: | |
12489 | case SHT_MIPS_LIBLIST: | |
12490 | sec = bfd_get_section_by_name (abfd, ".dynstr"); | |
12491 | if (sec != NULL) | |
12492 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12493 | break; | |
12494 | ||
12495 | case SHT_MIPS_GPTAB: | |
12496 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
fd361982 | 12497 | name = bfd_section_name ((*hdrpp)->bfd_section); |
b49e97c9 | 12498 | BFD_ASSERT (name != NULL |
08dedd66 | 12499 | && startswith (name, ".gptab.")); |
b49e97c9 TS |
12500 | sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); |
12501 | BFD_ASSERT (sec != NULL); | |
12502 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
12503 | break; | |
12504 | ||
12505 | case SHT_MIPS_CONTENT: | |
12506 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
fd361982 | 12507 | name = bfd_section_name ((*hdrpp)->bfd_section); |
b49e97c9 | 12508 | BFD_ASSERT (name != NULL |
08dedd66 | 12509 | && startswith (name, ".MIPS.content")); |
b49e97c9 TS |
12510 | sec = bfd_get_section_by_name (abfd, |
12511 | name + sizeof ".MIPS.content" - 1); | |
12512 | BFD_ASSERT (sec != NULL); | |
12513 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12514 | break; | |
12515 | ||
12516 | case SHT_MIPS_SYMBOL_LIB: | |
12517 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
12518 | if (sec != NULL) | |
12519 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12520 | sec = bfd_get_section_by_name (abfd, ".liblist"); | |
12521 | if (sec != NULL) | |
12522 | (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; | |
12523 | break; | |
12524 | ||
12525 | case SHT_MIPS_EVENTS: | |
12526 | BFD_ASSERT ((*hdrpp)->bfd_section != NULL); | |
fd361982 | 12527 | name = bfd_section_name ((*hdrpp)->bfd_section); |
b49e97c9 | 12528 | BFD_ASSERT (name != NULL); |
08dedd66 | 12529 | if (startswith (name, ".MIPS.events")) |
b49e97c9 TS |
12530 | sec = bfd_get_section_by_name (abfd, |
12531 | name + sizeof ".MIPS.events" - 1); | |
12532 | else | |
12533 | { | |
08dedd66 | 12534 | BFD_ASSERT (startswith (name, ".MIPS.post_rel")); |
b49e97c9 TS |
12535 | sec = bfd_get_section_by_name (abfd, |
12536 | (name | |
12537 | + sizeof ".MIPS.post_rel" - 1)); | |
12538 | } | |
12539 | BFD_ASSERT (sec != NULL); | |
12540 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
12541 | break; | |
12542 | ||
f16a9783 MS |
12543 | case SHT_MIPS_XHASH: |
12544 | sec = bfd_get_section_by_name (abfd, ".dynsym"); | |
12545 | if (sec != NULL) | |
12546 | (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; | |
b49e97c9 TS |
12547 | } |
12548 | } | |
12549 | } | |
06f44071 | 12550 | |
0a1b45a2 | 12551 | bool |
cc364be6 | 12552 | _bfd_mips_elf_final_write_processing (bfd *abfd) |
06f44071 | 12553 | { |
cc364be6 AM |
12554 | _bfd_mips_final_write_processing (abfd); |
12555 | return _bfd_elf_final_write_processing (abfd); | |
06f44071 | 12556 | } |
b49e97c9 | 12557 | \f |
8dc1a139 | 12558 | /* When creating an IRIX5 executable, we need REGINFO and RTPROC |
b49e97c9 TS |
12559 | segments. */ |
12560 | ||
12561 | int | |
a6b96beb AM |
12562 | _bfd_mips_elf_additional_program_headers (bfd *abfd, |
12563 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b49e97c9 TS |
12564 | { |
12565 | asection *s; | |
12566 | int ret = 0; | |
12567 | ||
12568 | /* See if we need a PT_MIPS_REGINFO segment. */ | |
12569 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
12570 | if (s && (s->flags & SEC_LOAD)) | |
12571 | ++ret; | |
12572 | ||
351cdf24 MF |
12573 | /* See if we need a PT_MIPS_ABIFLAGS segment. */ |
12574 | if (bfd_get_section_by_name (abfd, ".MIPS.abiflags")) | |
12575 | ++ret; | |
12576 | ||
b49e97c9 TS |
12577 | /* See if we need a PT_MIPS_OPTIONS segment. */ |
12578 | if (IRIX_COMPAT (abfd) == ict_irix6 | |
12579 | && bfd_get_section_by_name (abfd, | |
12580 | MIPS_ELF_OPTIONS_SECTION_NAME (abfd))) | |
12581 | ++ret; | |
12582 | ||
12583 | /* See if we need a PT_MIPS_RTPROC segment. */ | |
12584 | if (IRIX_COMPAT (abfd) == ict_irix5 | |
12585 | && bfd_get_section_by_name (abfd, ".dynamic") | |
12586 | && bfd_get_section_by_name (abfd, ".mdebug")) | |
12587 | ++ret; | |
12588 | ||
98c904a8 RS |
12589 | /* Allocate a PT_NULL header in dynamic objects. See |
12590 | _bfd_mips_elf_modify_segment_map for details. */ | |
12591 | if (!SGI_COMPAT (abfd) | |
12592 | && bfd_get_section_by_name (abfd, ".dynamic")) | |
12593 | ++ret; | |
12594 | ||
b49e97c9 TS |
12595 | return ret; |
12596 | } | |
12597 | ||
8dc1a139 | 12598 | /* Modify the segment map for an IRIX5 executable. */ |
b49e97c9 | 12599 | |
0a1b45a2 | 12600 | bool |
9719ad41 | 12601 | _bfd_mips_elf_modify_segment_map (bfd *abfd, |
7c8b76cc | 12602 | struct bfd_link_info *info) |
b49e97c9 TS |
12603 | { |
12604 | asection *s; | |
12605 | struct elf_segment_map *m, **pm; | |
986f0783 | 12606 | size_t amt; |
b49e97c9 TS |
12607 | |
12608 | /* If there is a .reginfo section, we need a PT_MIPS_REGINFO | |
12609 | segment. */ | |
12610 | s = bfd_get_section_by_name (abfd, ".reginfo"); | |
12611 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
12612 | { | |
12bd6957 | 12613 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b49e97c9 TS |
12614 | if (m->p_type == PT_MIPS_REGINFO) |
12615 | break; | |
12616 | if (m == NULL) | |
12617 | { | |
12618 | amt = sizeof *m; | |
9719ad41 | 12619 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 12620 | if (m == NULL) |
0a1b45a2 | 12621 | return false; |
b49e97c9 TS |
12622 | |
12623 | m->p_type = PT_MIPS_REGINFO; | |
12624 | m->count = 1; | |
12625 | m->sections[0] = s; | |
12626 | ||
12627 | /* We want to put it after the PHDR and INTERP segments. */ | |
12bd6957 | 12628 | pm = &elf_seg_map (abfd); |
b49e97c9 TS |
12629 | while (*pm != NULL |
12630 | && ((*pm)->p_type == PT_PHDR | |
12631 | || (*pm)->p_type == PT_INTERP)) | |
12632 | pm = &(*pm)->next; | |
12633 | ||
12634 | m->next = *pm; | |
12635 | *pm = m; | |
12636 | } | |
12637 | } | |
12638 | ||
351cdf24 MF |
12639 | /* If there is a .MIPS.abiflags section, we need a PT_MIPS_ABIFLAGS |
12640 | segment. */ | |
12641 | s = bfd_get_section_by_name (abfd, ".MIPS.abiflags"); | |
12642 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
12643 | { | |
12644 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) | |
12645 | if (m->p_type == PT_MIPS_ABIFLAGS) | |
12646 | break; | |
12647 | if (m == NULL) | |
12648 | { | |
12649 | amt = sizeof *m; | |
12650 | m = bfd_zalloc (abfd, amt); | |
12651 | if (m == NULL) | |
0a1b45a2 | 12652 | return false; |
351cdf24 MF |
12653 | |
12654 | m->p_type = PT_MIPS_ABIFLAGS; | |
12655 | m->count = 1; | |
12656 | m->sections[0] = s; | |
12657 | ||
12658 | /* We want to put it after the PHDR and INTERP segments. */ | |
12659 | pm = &elf_seg_map (abfd); | |
12660 | while (*pm != NULL | |
12661 | && ((*pm)->p_type == PT_PHDR | |
12662 | || (*pm)->p_type == PT_INTERP)) | |
12663 | pm = &(*pm)->next; | |
12664 | ||
12665 | m->next = *pm; | |
12666 | *pm = m; | |
12667 | } | |
12668 | } | |
12669 | ||
b49e97c9 TS |
12670 | /* For IRIX 6, we don't have .mdebug sections, nor does anything but |
12671 | .dynamic end up in PT_DYNAMIC. However, we do have to insert a | |
98a8deaf | 12672 | PT_MIPS_OPTIONS segment immediately following the program header |
b49e97c9 | 12673 | table. */ |
c1fd6598 AO |
12674 | if (NEWABI_P (abfd) |
12675 | /* On non-IRIX6 new abi, we'll have already created a segment | |
12676 | for this section, so don't create another. I'm not sure this | |
12677 | is not also the case for IRIX 6, but I can't test it right | |
12678 | now. */ | |
12679 | && IRIX_COMPAT (abfd) == ict_irix6) | |
b49e97c9 TS |
12680 | { |
12681 | for (s = abfd->sections; s; s = s->next) | |
12682 | if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS) | |
12683 | break; | |
12684 | ||
12685 | if (s) | |
12686 | { | |
12687 | struct elf_segment_map *options_segment; | |
12688 | ||
12bd6957 | 12689 | pm = &elf_seg_map (abfd); |
98a8deaf RS |
12690 | while (*pm != NULL |
12691 | && ((*pm)->p_type == PT_PHDR | |
12692 | || (*pm)->p_type == PT_INTERP)) | |
12693 | pm = &(*pm)->next; | |
b49e97c9 | 12694 | |
8ded5a0f AM |
12695 | if (*pm == NULL || (*pm)->p_type != PT_MIPS_OPTIONS) |
12696 | { | |
12697 | amt = sizeof (struct elf_segment_map); | |
12698 | options_segment = bfd_zalloc (abfd, amt); | |
12699 | options_segment->next = *pm; | |
12700 | options_segment->p_type = PT_MIPS_OPTIONS; | |
12701 | options_segment->p_flags = PF_R; | |
0a1b45a2 | 12702 | options_segment->p_flags_valid = true; |
8ded5a0f AM |
12703 | options_segment->count = 1; |
12704 | options_segment->sections[0] = s; | |
12705 | *pm = options_segment; | |
12706 | } | |
b49e97c9 TS |
12707 | } |
12708 | } | |
12709 | else | |
12710 | { | |
12711 | if (IRIX_COMPAT (abfd) == ict_irix5) | |
12712 | { | |
12713 | /* If there are .dynamic and .mdebug sections, we make a room | |
12714 | for the RTPROC header. FIXME: Rewrite without section names. */ | |
12715 | if (bfd_get_section_by_name (abfd, ".interp") == NULL | |
12716 | && bfd_get_section_by_name (abfd, ".dynamic") != NULL | |
12717 | && bfd_get_section_by_name (abfd, ".mdebug") != NULL) | |
12718 | { | |
12bd6957 | 12719 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b49e97c9 TS |
12720 | if (m->p_type == PT_MIPS_RTPROC) |
12721 | break; | |
12722 | if (m == NULL) | |
12723 | { | |
12724 | amt = sizeof *m; | |
9719ad41 | 12725 | m = bfd_zalloc (abfd, amt); |
b49e97c9 | 12726 | if (m == NULL) |
0a1b45a2 | 12727 | return false; |
b49e97c9 TS |
12728 | |
12729 | m->p_type = PT_MIPS_RTPROC; | |
12730 | ||
12731 | s = bfd_get_section_by_name (abfd, ".rtproc"); | |
12732 | if (s == NULL) | |
12733 | { | |
12734 | m->count = 0; | |
12735 | m->p_flags = 0; | |
12736 | m->p_flags_valid = 1; | |
12737 | } | |
12738 | else | |
12739 | { | |
12740 | m->count = 1; | |
12741 | m->sections[0] = s; | |
12742 | } | |
12743 | ||
12744 | /* We want to put it after the DYNAMIC segment. */ | |
12bd6957 | 12745 | pm = &elf_seg_map (abfd); |
b49e97c9 TS |
12746 | while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) |
12747 | pm = &(*pm)->next; | |
12748 | if (*pm != NULL) | |
12749 | pm = &(*pm)->next; | |
12750 | ||
12751 | m->next = *pm; | |
12752 | *pm = m; | |
12753 | } | |
12754 | } | |
12755 | } | |
8dc1a139 | 12756 | /* On IRIX5, the PT_DYNAMIC segment includes the .dynamic, |
b49e97c9 TS |
12757 | .dynstr, .dynsym, and .hash sections, and everything in |
12758 | between. */ | |
12bd6957 | 12759 | for (pm = &elf_seg_map (abfd); *pm != NULL; |
b49e97c9 TS |
12760 | pm = &(*pm)->next) |
12761 | if ((*pm)->p_type == PT_DYNAMIC) | |
12762 | break; | |
12763 | m = *pm; | |
f6f62d6f RS |
12764 | /* GNU/Linux binaries do not need the extended PT_DYNAMIC section. |
12765 | glibc's dynamic linker has traditionally derived the number of | |
12766 | tags from the p_filesz field, and sometimes allocates stack | |
12767 | arrays of that size. An overly-big PT_DYNAMIC segment can | |
12768 | be actively harmful in such cases. Making PT_DYNAMIC contain | |
12769 | other sections can also make life hard for the prelinker, | |
12770 | which might move one of the other sections to a different | |
12771 | PT_LOAD segment. */ | |
12772 | if (SGI_COMPAT (abfd) | |
12773 | && m != NULL | |
12774 | && m->count == 1 | |
12775 | && strcmp (m->sections[0]->name, ".dynamic") == 0) | |
b49e97c9 TS |
12776 | { |
12777 | static const char *sec_names[] = | |
12778 | { | |
12779 | ".dynamic", ".dynstr", ".dynsym", ".hash" | |
12780 | }; | |
12781 | bfd_vma low, high; | |
12782 | unsigned int i, c; | |
12783 | struct elf_segment_map *n; | |
12784 | ||
792b4a53 | 12785 | low = ~(bfd_vma) 0; |
b49e97c9 TS |
12786 | high = 0; |
12787 | for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) | |
12788 | { | |
12789 | s = bfd_get_section_by_name (abfd, sec_names[i]); | |
12790 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
12791 | { | |
12792 | bfd_size_type sz; | |
12793 | ||
12794 | if (low > s->vma) | |
12795 | low = s->vma; | |
eea6121a | 12796 | sz = s->size; |
b49e97c9 TS |
12797 | if (high < s->vma + sz) |
12798 | high = s->vma + sz; | |
12799 | } | |
12800 | } | |
12801 | ||
12802 | c = 0; | |
12803 | for (s = abfd->sections; s != NULL; s = s->next) | |
12804 | if ((s->flags & SEC_LOAD) != 0 | |
12805 | && s->vma >= low | |
eea6121a | 12806 | && s->vma + s->size <= high) |
b49e97c9 TS |
12807 | ++c; |
12808 | ||
986f0783 | 12809 | amt = sizeof *n - sizeof (asection *) + c * sizeof (asection *); |
9719ad41 | 12810 | n = bfd_zalloc (abfd, amt); |
b49e97c9 | 12811 | if (n == NULL) |
0a1b45a2 | 12812 | return false; |
b49e97c9 TS |
12813 | *n = *m; |
12814 | n->count = c; | |
12815 | ||
12816 | i = 0; | |
12817 | for (s = abfd->sections; s != NULL; s = s->next) | |
12818 | { | |
12819 | if ((s->flags & SEC_LOAD) != 0 | |
12820 | && s->vma >= low | |
eea6121a | 12821 | && s->vma + s->size <= high) |
b49e97c9 TS |
12822 | { |
12823 | n->sections[i] = s; | |
12824 | ++i; | |
12825 | } | |
12826 | } | |
12827 | ||
12828 | *pm = n; | |
12829 | } | |
12830 | } | |
12831 | ||
98c904a8 RS |
12832 | /* Allocate a spare program header in dynamic objects so that tools |
12833 | like the prelinker can add an extra PT_LOAD entry. | |
12834 | ||
12835 | If the prelinker needs to make room for a new PT_LOAD entry, its | |
12836 | standard procedure is to move the first (read-only) sections into | |
12837 | the new (writable) segment. However, the MIPS ABI requires | |
12838 | .dynamic to be in a read-only segment, and the section will often | |
12839 | start within sizeof (ElfNN_Phdr) bytes of the last program header. | |
12840 | ||
12841 | Although the prelinker could in principle move .dynamic to a | |
12842 | writable segment, it seems better to allocate a spare program | |
12843 | header instead, and avoid the need to move any sections. | |
12844 | There is a long tradition of allocating spare dynamic tags, | |
12845 | so allocating a spare program header seems like a natural | |
7c8b76cc JM |
12846 | extension. |
12847 | ||
12848 | If INFO is NULL, we may be copying an already prelinked binary | |
12849 | with objcopy or strip, so do not add this header. */ | |
12850 | if (info != NULL | |
12851 | && !SGI_COMPAT (abfd) | |
98c904a8 RS |
12852 | && bfd_get_section_by_name (abfd, ".dynamic")) |
12853 | { | |
12bd6957 | 12854 | for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next) |
98c904a8 RS |
12855 | if ((*pm)->p_type == PT_NULL) |
12856 | break; | |
12857 | if (*pm == NULL) | |
12858 | { | |
12859 | m = bfd_zalloc (abfd, sizeof (*m)); | |
12860 | if (m == NULL) | |
0a1b45a2 | 12861 | return false; |
98c904a8 RS |
12862 | |
12863 | m->p_type = PT_NULL; | |
12864 | *pm = m; | |
12865 | } | |
12866 | } | |
12867 | ||
0a1b45a2 | 12868 | return true; |
b49e97c9 TS |
12869 | } |
12870 | \f | |
12871 | /* Return the section that should be marked against GC for a given | |
12872 | relocation. */ | |
12873 | ||
12874 | asection * | |
9719ad41 | 12875 | _bfd_mips_elf_gc_mark_hook (asection *sec, |
07adf181 | 12876 | struct bfd_link_info *info, |
9719ad41 RS |
12877 | Elf_Internal_Rela *rel, |
12878 | struct elf_link_hash_entry *h, | |
12879 | Elf_Internal_Sym *sym) | |
b49e97c9 TS |
12880 | { |
12881 | /* ??? Do mips16 stub sections need to be handled special? */ | |
12882 | ||
12883 | if (h != NULL) | |
07adf181 AM |
12884 | switch (ELF_R_TYPE (sec->owner, rel->r_info)) |
12885 | { | |
12886 | case R_MIPS_GNU_VTINHERIT: | |
12887 | case R_MIPS_GNU_VTENTRY: | |
12888 | return NULL; | |
12889 | } | |
b49e97c9 | 12890 | |
07adf181 | 12891 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
b49e97c9 TS |
12892 | } |
12893 | ||
351cdf24 MF |
12894 | /* Prevent .MIPS.abiflags from being discarded with --gc-sections. */ |
12895 | ||
0a1b45a2 | 12896 | bool |
351cdf24 MF |
12897 | _bfd_mips_elf_gc_mark_extra_sections (struct bfd_link_info *info, |
12898 | elf_gc_mark_hook_fn gc_mark_hook) | |
12899 | { | |
12900 | bfd *sub; | |
12901 | ||
12902 | _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook); | |
12903 | ||
12904 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) | |
12905 | { | |
12906 | asection *o; | |
12907 | ||
12908 | if (! is_mips_elf (sub)) | |
12909 | continue; | |
12910 | ||
12911 | for (o = sub->sections; o != NULL; o = o->next) | |
12912 | if (!o->gc_mark | |
fd361982 | 12913 | && MIPS_ELF_ABIFLAGS_SECTION_NAME_P (bfd_section_name (o))) |
351cdf24 MF |
12914 | { |
12915 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) | |
0a1b45a2 | 12916 | return false; |
351cdf24 MF |
12917 | } |
12918 | } | |
12919 | ||
0a1b45a2 | 12920 | return true; |
351cdf24 | 12921 | } |
b49e97c9 TS |
12922 | \f |
12923 | /* Copy data from a MIPS ELF indirect symbol to its direct symbol, | |
12924 | hiding the old indirect symbol. Process additional relocation | |
12925 | information. Also called for weakdefs, in which case we just let | |
12926 | _bfd_elf_link_hash_copy_indirect copy the flags for us. */ | |
12927 | ||
12928 | void | |
fcfa13d2 | 12929 | _bfd_mips_elf_copy_indirect_symbol (struct bfd_link_info *info, |
9719ad41 RS |
12930 | struct elf_link_hash_entry *dir, |
12931 | struct elf_link_hash_entry *ind) | |
b49e97c9 TS |
12932 | { |
12933 | struct mips_elf_link_hash_entry *dirmips, *indmips; | |
12934 | ||
fcfa13d2 | 12935 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
b49e97c9 | 12936 | |
861fb55a DJ |
12937 | dirmips = (struct mips_elf_link_hash_entry *) dir; |
12938 | indmips = (struct mips_elf_link_hash_entry *) ind; | |
12939 | /* Any absolute non-dynamic relocations against an indirect or weak | |
12940 | definition will be against the target symbol. */ | |
12941 | if (indmips->has_static_relocs) | |
0a1b45a2 | 12942 | dirmips->has_static_relocs = true; |
861fb55a | 12943 | |
b49e97c9 TS |
12944 | if (ind->root.type != bfd_link_hash_indirect) |
12945 | return; | |
12946 | ||
b49e97c9 TS |
12947 | dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs; |
12948 | if (indmips->readonly_reloc) | |
0a1b45a2 | 12949 | dirmips->readonly_reloc = true; |
b49e97c9 | 12950 | if (indmips->no_fn_stub) |
0a1b45a2 | 12951 | dirmips->no_fn_stub = true; |
61b0a4af RS |
12952 | if (indmips->fn_stub) |
12953 | { | |
12954 | dirmips->fn_stub = indmips->fn_stub; | |
12955 | indmips->fn_stub = NULL; | |
12956 | } | |
12957 | if (indmips->need_fn_stub) | |
12958 | { | |
0a1b45a2 AM |
12959 | dirmips->need_fn_stub = true; |
12960 | indmips->need_fn_stub = false; | |
61b0a4af RS |
12961 | } |
12962 | if (indmips->call_stub) | |
12963 | { | |
12964 | dirmips->call_stub = indmips->call_stub; | |
12965 | indmips->call_stub = NULL; | |
12966 | } | |
12967 | if (indmips->call_fp_stub) | |
12968 | { | |
12969 | dirmips->call_fp_stub = indmips->call_fp_stub; | |
12970 | indmips->call_fp_stub = NULL; | |
12971 | } | |
634835ae RS |
12972 | if (indmips->global_got_area < dirmips->global_got_area) |
12973 | dirmips->global_got_area = indmips->global_got_area; | |
12974 | if (indmips->global_got_area < GGA_NONE) | |
12975 | indmips->global_got_area = GGA_NONE; | |
861fb55a | 12976 | if (indmips->has_nonpic_branches) |
0a1b45a2 | 12977 | dirmips->has_nonpic_branches = true; |
b49e97c9 | 12978 | } |
47275900 MR |
12979 | |
12980 | /* Take care of the special `__gnu_absolute_zero' symbol and ignore attempts | |
12981 | to hide it. It has to remain global (it will also be protected) so as to | |
12982 | be assigned a global GOT entry, which will then remain unchanged at load | |
12983 | time. */ | |
12984 | ||
12985 | void | |
12986 | _bfd_mips_elf_hide_symbol (struct bfd_link_info *info, | |
12987 | struct elf_link_hash_entry *entry, | |
0a1b45a2 | 12988 | bool force_local) |
47275900 MR |
12989 | { |
12990 | struct mips_elf_link_hash_table *htab; | |
12991 | ||
12992 | htab = mips_elf_hash_table (info); | |
12993 | BFD_ASSERT (htab != NULL); | |
12994 | if (htab->use_absolute_zero | |
12995 | && strcmp (entry->root.root.string, "__gnu_absolute_zero") == 0) | |
12996 | return; | |
12997 | ||
12998 | _bfd_elf_link_hash_hide_symbol (info, entry, force_local); | |
12999 | } | |
b49e97c9 | 13000 | \f |
d01414a5 TS |
13001 | #define PDR_SIZE 32 |
13002 | ||
0a1b45a2 | 13003 | bool |
9719ad41 RS |
13004 | _bfd_mips_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, |
13005 | struct bfd_link_info *info) | |
d01414a5 TS |
13006 | { |
13007 | asection *o; | |
0a1b45a2 | 13008 | bool ret = false; |
d01414a5 TS |
13009 | unsigned char *tdata; |
13010 | size_t i, skip; | |
13011 | ||
13012 | o = bfd_get_section_by_name (abfd, ".pdr"); | |
13013 | if (! o) | |
0a1b45a2 | 13014 | return false; |
eea6121a | 13015 | if (o->size == 0) |
0a1b45a2 | 13016 | return false; |
eea6121a | 13017 | if (o->size % PDR_SIZE != 0) |
0a1b45a2 | 13018 | return false; |
d01414a5 TS |
13019 | if (o->output_section != NULL |
13020 | && bfd_is_abs_section (o->output_section)) | |
0a1b45a2 | 13021 | return false; |
d01414a5 | 13022 | |
eea6121a | 13023 | tdata = bfd_zmalloc (o->size / PDR_SIZE); |
d01414a5 | 13024 | if (! tdata) |
0a1b45a2 | 13025 | return false; |
d01414a5 | 13026 | |
9719ad41 | 13027 | cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
45d6a902 | 13028 | info->keep_memory); |
d01414a5 TS |
13029 | if (!cookie->rels) |
13030 | { | |
13031 | free (tdata); | |
0a1b45a2 | 13032 | return false; |
d01414a5 TS |
13033 | } |
13034 | ||
13035 | cookie->rel = cookie->rels; | |
13036 | cookie->relend = cookie->rels + o->reloc_count; | |
13037 | ||
eea6121a | 13038 | for (i = 0, skip = 0; i < o->size / PDR_SIZE; i ++) |
d01414a5 | 13039 | { |
c152c796 | 13040 | if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) |
d01414a5 TS |
13041 | { |
13042 | tdata[i] = 1; | |
13043 | skip ++; | |
13044 | } | |
13045 | } | |
13046 | ||
13047 | if (skip != 0) | |
13048 | { | |
f0abc2a1 | 13049 | mips_elf_section_data (o)->u.tdata = tdata; |
e034b2cc MR |
13050 | if (o->rawsize == 0) |
13051 | o->rawsize = o->size; | |
eea6121a | 13052 | o->size -= skip * PDR_SIZE; |
0a1b45a2 | 13053 | ret = true; |
d01414a5 TS |
13054 | } |
13055 | else | |
13056 | free (tdata); | |
13057 | ||
13058 | if (! info->keep_memory) | |
13059 | free (cookie->rels); | |
13060 | ||
13061 | return ret; | |
13062 | } | |
13063 | ||
0a1b45a2 | 13064 | bool |
9719ad41 | 13065 | _bfd_mips_elf_ignore_discarded_relocs (asection *sec) |
53bfd6b4 MR |
13066 | { |
13067 | if (strcmp (sec->name, ".pdr") == 0) | |
0a1b45a2 AM |
13068 | return true; |
13069 | return false; | |
53bfd6b4 | 13070 | } |
d01414a5 | 13071 | |
0a1b45a2 | 13072 | bool |
c7b8f16e JB |
13073 | _bfd_mips_elf_write_section (bfd *output_bfd, |
13074 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, | |
07d6d2b8 | 13075 | asection *sec, bfd_byte *contents) |
d01414a5 TS |
13076 | { |
13077 | bfd_byte *to, *from, *end; | |
13078 | int i; | |
13079 | ||
13080 | if (strcmp (sec->name, ".pdr") != 0) | |
0a1b45a2 | 13081 | return false; |
d01414a5 | 13082 | |
f0abc2a1 | 13083 | if (mips_elf_section_data (sec)->u.tdata == NULL) |
0a1b45a2 | 13084 | return false; |
d01414a5 TS |
13085 | |
13086 | to = contents; | |
eea6121a | 13087 | end = contents + sec->size; |
d01414a5 TS |
13088 | for (from = contents, i = 0; |
13089 | from < end; | |
13090 | from += PDR_SIZE, i++) | |
13091 | { | |
f0abc2a1 | 13092 | if ((mips_elf_section_data (sec)->u.tdata)[i] == 1) |
d01414a5 TS |
13093 | continue; |
13094 | if (to != from) | |
13095 | memcpy (to, from, PDR_SIZE); | |
13096 | to += PDR_SIZE; | |
13097 | } | |
13098 | bfd_set_section_contents (output_bfd, sec->output_section, contents, | |
eea6121a | 13099 | sec->output_offset, sec->size); |
0a1b45a2 | 13100 | return true; |
d01414a5 | 13101 | } |
53bfd6b4 | 13102 | \f |
df58fc94 RS |
13103 | /* microMIPS code retains local labels for linker relaxation. Omit them |
13104 | from output by default for clarity. */ | |
13105 | ||
0a1b45a2 | 13106 | bool |
df58fc94 RS |
13107 | _bfd_mips_elf_is_target_special_symbol (bfd *abfd, asymbol *sym) |
13108 | { | |
13109 | return _bfd_elf_is_local_label_name (abfd, sym->name); | |
13110 | } | |
13111 | ||
b49e97c9 TS |
13112 | /* MIPS ELF uses a special find_nearest_line routine in order the |
13113 | handle the ECOFF debugging information. */ | |
13114 | ||
13115 | struct mips_elf_find_line | |
13116 | { | |
13117 | struct ecoff_debug_info d; | |
13118 | struct ecoff_find_line i; | |
13119 | }; | |
13120 | ||
0a1b45a2 | 13121 | bool |
fb167eb2 AM |
13122 | _bfd_mips_elf_find_nearest_line (bfd *abfd, asymbol **symbols, |
13123 | asection *section, bfd_vma offset, | |
9719ad41 RS |
13124 | const char **filename_ptr, |
13125 | const char **functionname_ptr, | |
fb167eb2 AM |
13126 | unsigned int *line_ptr, |
13127 | unsigned int *discriminator_ptr) | |
b49e97c9 TS |
13128 | { |
13129 | asection *msec; | |
13130 | ||
fb167eb2 | 13131 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
b49e97c9 | 13132 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
13133 | line_ptr, discriminator_ptr, |
13134 | dwarf_debug_sections, | |
7f3bf384 AM |
13135 | &elf_tdata (abfd)->dwarf2_find_line_info) |
13136 | == 1) | |
0a1b45a2 | 13137 | return true; |
46d09186 | 13138 | |
e7679060 AM |
13139 | if (_bfd_dwarf1_find_nearest_line (abfd, symbols, section, offset, |
13140 | filename_ptr, functionname_ptr, | |
13141 | line_ptr)) | |
13142 | { | |
13143 | if (!*functionname_ptr) | |
13144 | _bfd_elf_find_function (abfd, symbols, section, offset, | |
13145 | *filename_ptr ? NULL : filename_ptr, | |
13146 | functionname_ptr); | |
0a1b45a2 | 13147 | return true; |
46d09186 | 13148 | } |
b49e97c9 TS |
13149 | |
13150 | msec = bfd_get_section_by_name (abfd, ".mdebug"); | |
13151 | if (msec != NULL) | |
13152 | { | |
13153 | flagword origflags; | |
13154 | struct mips_elf_find_line *fi; | |
13155 | const struct ecoff_debug_swap * const swap = | |
13156 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
13157 | ||
13158 | /* If we are called during a link, mips_elf_final_link may have | |
13159 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
13160 | if appropriate (which it normally will be). */ | |
13161 | origflags = msec->flags; | |
13162 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
13163 | msec->flags |= SEC_HAS_CONTENTS; | |
13164 | ||
698600e4 | 13165 | fi = mips_elf_tdata (abfd)->find_line_info; |
b49e97c9 TS |
13166 | if (fi == NULL) |
13167 | { | |
13168 | bfd_size_type external_fdr_size; | |
13169 | char *fraw_src; | |
13170 | char *fraw_end; | |
13171 | struct fdr *fdr_ptr; | |
13172 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
13173 | ||
9719ad41 | 13174 | fi = bfd_zalloc (abfd, amt); |
b49e97c9 TS |
13175 | if (fi == NULL) |
13176 | { | |
13177 | msec->flags = origflags; | |
0a1b45a2 | 13178 | return false; |
b49e97c9 TS |
13179 | } |
13180 | ||
13181 | if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) | |
13182 | { | |
13183 | msec->flags = origflags; | |
0a1b45a2 | 13184 | return false; |
b49e97c9 TS |
13185 | } |
13186 | ||
13187 | /* Swap in the FDR information. */ | |
13188 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
9719ad41 | 13189 | fi->d.fdr = bfd_alloc (abfd, amt); |
b49e97c9 TS |
13190 | if (fi->d.fdr == NULL) |
13191 | { | |
13192 | msec->flags = origflags; | |
0a1b45a2 | 13193 | return false; |
b49e97c9 TS |
13194 | } |
13195 | external_fdr_size = swap->external_fdr_size; | |
13196 | fdr_ptr = fi->d.fdr; | |
13197 | fraw_src = (char *) fi->d.external_fdr; | |
13198 | fraw_end = (fraw_src | |
13199 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
13200 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
9719ad41 | 13201 | (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); |
b49e97c9 | 13202 | |
698600e4 | 13203 | mips_elf_tdata (abfd)->find_line_info = fi; |
b49e97c9 TS |
13204 | |
13205 | /* Note that we don't bother to ever free this information. | |
07d6d2b8 AM |
13206 | find_nearest_line is either called all the time, as in |
13207 | objdump -l, so the information should be saved, or it is | |
13208 | rarely called, as in ld error messages, so the memory | |
13209 | wasted is unimportant. Still, it would probably be a | |
13210 | good idea for free_cached_info to throw it away. */ | |
b49e97c9 TS |
13211 | } |
13212 | ||
13213 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
13214 | &fi->i, filename_ptr, functionname_ptr, | |
13215 | line_ptr)) | |
13216 | { | |
13217 | msec->flags = origflags; | |
0a1b45a2 | 13218 | return true; |
b49e97c9 TS |
13219 | } |
13220 | ||
13221 | msec->flags = origflags; | |
13222 | } | |
13223 | ||
13224 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
13225 | ||
fb167eb2 | 13226 | return _bfd_elf_find_nearest_line (abfd, symbols, section, offset, |
b49e97c9 | 13227 | filename_ptr, functionname_ptr, |
fb167eb2 | 13228 | line_ptr, discriminator_ptr); |
b49e97c9 | 13229 | } |
4ab527b0 | 13230 | |
0a1b45a2 | 13231 | bool |
4ab527b0 FF |
13232 | _bfd_mips_elf_find_inliner_info (bfd *abfd, |
13233 | const char **filename_ptr, | |
13234 | const char **functionname_ptr, | |
13235 | unsigned int *line_ptr) | |
13236 | { | |
0a1b45a2 | 13237 | bool found; |
4ab527b0 FF |
13238 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, |
13239 | functionname_ptr, line_ptr, | |
13240 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
13241 | return found; | |
13242 | } | |
13243 | ||
b49e97c9 TS |
13244 | \f |
13245 | /* When are writing out the .options or .MIPS.options section, | |
13246 | remember the bytes we are writing out, so that we can install the | |
13247 | GP value in the section_processing routine. */ | |
13248 | ||
0a1b45a2 | 13249 | bool |
9719ad41 RS |
13250 | _bfd_mips_elf_set_section_contents (bfd *abfd, sec_ptr section, |
13251 | const void *location, | |
13252 | file_ptr offset, bfd_size_type count) | |
b49e97c9 | 13253 | { |
cc2e31b9 | 13254 | if (MIPS_ELF_OPTIONS_SECTION_NAME_P (section->name)) |
b49e97c9 TS |
13255 | { |
13256 | bfd_byte *c; | |
13257 | ||
13258 | if (elf_section_data (section) == NULL) | |
13259 | { | |
986f0783 | 13260 | size_t amt = sizeof (struct bfd_elf_section_data); |
9719ad41 | 13261 | section->used_by_bfd = bfd_zalloc (abfd, amt); |
b49e97c9 | 13262 | if (elf_section_data (section) == NULL) |
0a1b45a2 | 13263 | return false; |
b49e97c9 | 13264 | } |
f0abc2a1 | 13265 | c = mips_elf_section_data (section)->u.tdata; |
b49e97c9 TS |
13266 | if (c == NULL) |
13267 | { | |
eea6121a | 13268 | c = bfd_zalloc (abfd, section->size); |
b49e97c9 | 13269 | if (c == NULL) |
0a1b45a2 | 13270 | return false; |
f0abc2a1 | 13271 | mips_elf_section_data (section)->u.tdata = c; |
b49e97c9 TS |
13272 | } |
13273 | ||
9719ad41 | 13274 | memcpy (c + offset, location, count); |
b49e97c9 TS |
13275 | } |
13276 | ||
13277 | return _bfd_elf_set_section_contents (abfd, section, location, offset, | |
13278 | count); | |
13279 | } | |
13280 | ||
13281 | /* This is almost identical to bfd_generic_get_... except that some | |
13282 | MIPS relocations need to be handled specially. Sigh. */ | |
13283 | ||
13284 | bfd_byte * | |
9719ad41 RS |
13285 | _bfd_elf_mips_get_relocated_section_contents |
13286 | (bfd *abfd, | |
13287 | struct bfd_link_info *link_info, | |
13288 | struct bfd_link_order *link_order, | |
13289 | bfd_byte *data, | |
0a1b45a2 | 13290 | bool relocatable, |
9719ad41 | 13291 | asymbol **symbols) |
b49e97c9 | 13292 | { |
b49e97c9 TS |
13293 | bfd *input_bfd = link_order->u.indirect.section->owner; |
13294 | asection *input_section = link_order->u.indirect.section; | |
d7a7af8f AM |
13295 | long reloc_size; |
13296 | arelent **reloc_vector; | |
b49e97c9 TS |
13297 | long reloc_count; |
13298 | ||
d7a7af8f | 13299 | reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); |
b49e97c9 | 13300 | if (reloc_size < 0) |
d7a7af8f | 13301 | return NULL; |
b49e97c9 | 13302 | |
d7a7af8f | 13303 | /* Read in the section. */ |
56ba7527 | 13304 | bfd_byte *orig_data = data; |
d7a7af8f AM |
13305 | if (!bfd_get_full_section_contents (input_bfd, input_section, &data)) |
13306 | return NULL; | |
b49e97c9 | 13307 | |
d7a7af8f AM |
13308 | if (data == NULL) |
13309 | return NULL; | |
13310 | ||
13311 | if (reloc_size == 0) | |
13312 | return data; | |
13313 | ||
13314 | reloc_vector = (arelent **) bfd_malloc (reloc_size); | |
13315 | if (reloc_vector == NULL) | |
7ebf6ed0 | 13316 | { |
c799eddb | 13317 | struct mips_elf_obj_tdata *tdata; |
7ebf6ed0 AM |
13318 | struct mips_hi16 **hip, *hi; |
13319 | error_return: | |
13320 | /* If we are going to return an error, remove entries on | |
13321 | mips_hi16_list that point into this section's data. Data | |
13322 | will typically be freed on return from this function. */ | |
c799eddb AM |
13323 | tdata = mips_elf_tdata (abfd); |
13324 | hip = &tdata->mips_hi16_list; | |
7ebf6ed0 AM |
13325 | while ((hi = *hip) != NULL) |
13326 | { | |
13327 | if (hi->input_section == input_section) | |
13328 | { | |
13329 | *hip = hi->next; | |
13330 | free (hi); | |
13331 | } | |
13332 | else | |
13333 | hip = &hi->next; | |
13334 | } | |
56ba7527 AM |
13335 | if (orig_data == NULL) |
13336 | free (data); | |
7ebf6ed0 AM |
13337 | data = NULL; |
13338 | goto out; | |
13339 | } | |
b49e97c9 | 13340 | |
b49e97c9 TS |
13341 | reloc_count = bfd_canonicalize_reloc (input_bfd, |
13342 | input_section, | |
13343 | reloc_vector, | |
13344 | symbols); | |
13345 | if (reloc_count < 0) | |
13346 | goto error_return; | |
13347 | ||
13348 | if (reloc_count > 0) | |
13349 | { | |
13350 | arelent **parent; | |
13351 | /* for mips */ | |
13352 | int gp_found; | |
13353 | bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ | |
13354 | ||
13355 | { | |
13356 | struct bfd_hash_entry *h; | |
13357 | struct bfd_link_hash_entry *lh; | |
13358 | /* Skip all this stuff if we aren't mixing formats. */ | |
13359 | if (abfd && input_bfd | |
13360 | && abfd->xvec == input_bfd->xvec) | |
13361 | lh = 0; | |
13362 | else | |
13363 | { | |
0a1b45a2 | 13364 | h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false); |
b49e97c9 TS |
13365 | lh = (struct bfd_link_hash_entry *) h; |
13366 | } | |
13367 | lookup: | |
13368 | if (lh) | |
13369 | { | |
13370 | switch (lh->type) | |
13371 | { | |
13372 | case bfd_link_hash_undefined: | |
13373 | case bfd_link_hash_undefweak: | |
13374 | case bfd_link_hash_common: | |
13375 | gp_found = 0; | |
13376 | break; | |
13377 | case bfd_link_hash_defined: | |
13378 | case bfd_link_hash_defweak: | |
13379 | gp_found = 1; | |
13380 | gp = lh->u.def.value; | |
13381 | break; | |
13382 | case bfd_link_hash_indirect: | |
13383 | case bfd_link_hash_warning: | |
13384 | lh = lh->u.i.link; | |
13385 | /* @@FIXME ignoring warning for now */ | |
13386 | goto lookup; | |
13387 | case bfd_link_hash_new: | |
13388 | default: | |
13389 | abort (); | |
13390 | } | |
13391 | } | |
13392 | else | |
13393 | gp_found = 0; | |
13394 | } | |
13395 | /* end mips */ | |
d7a7af8f | 13396 | |
9719ad41 | 13397 | for (parent = reloc_vector; *parent != NULL; parent++) |
b49e97c9 | 13398 | { |
9719ad41 | 13399 | char *error_message = NULL; |
d7a7af8f | 13400 | asymbol *symbol; |
b49e97c9 TS |
13401 | bfd_reloc_status_type r; |
13402 | ||
d7a7af8f AM |
13403 | symbol = *(*parent)->sym_ptr_ptr; |
13404 | /* PR ld/19628: A specially crafted input file | |
13405 | can result in a NULL symbol pointer here. */ | |
13406 | if (symbol == NULL) | |
13407 | { | |
13408 | link_info->callbacks->einfo | |
13409 | /* xgettext:c-format */ | |
13410 | (_("%X%P: %pB(%pA): error: relocation for offset %V has no value\n"), | |
13411 | abfd, input_section, (* parent)->address); | |
13412 | goto error_return; | |
13413 | } | |
13414 | ||
13415 | /* Zap reloc field when the symbol is from a discarded | |
13416 | section, ignoring any addend. Do the same when called | |
13417 | from bfd_simple_get_relocated_section_contents for | |
13418 | undefined symbols in debug sections. This is to keep | |
13419 | debug info reasonably sane, in particular so that | |
13420 | DW_FORM_ref_addr to another file's .debug_info isn't | |
13421 | confused with an offset into the current file's | |
13422 | .debug_info. */ | |
13423 | if ((symbol->section != NULL && discarded_section (symbol->section)) | |
13424 | || (symbol->section == bfd_und_section_ptr | |
13425 | && (input_section->flags & SEC_DEBUGGING) != 0 | |
13426 | && link_info->input_bfds == link_info->output_bfd)) | |
13427 | { | |
13428 | bfd_vma off; | |
13429 | static reloc_howto_type none_howto | |
c94cb026 | 13430 | = HOWTO (0, 0, 0, 0, false, 0, complain_overflow_dont, NULL, |
0a1b45a2 | 13431 | "unused", false, 0, 0, false); |
d7a7af8f AM |
13432 | |
13433 | off = ((*parent)->address | |
13434 | * bfd_octets_per_byte (input_bfd, input_section)); | |
13435 | _bfd_clear_contents ((*parent)->howto, input_bfd, | |
13436 | input_section, data, off); | |
13437 | (*parent)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
13438 | (*parent)->addend = 0; | |
13439 | (*parent)->howto = &none_howto; | |
13440 | r = bfd_reloc_ok; | |
13441 | } | |
13442 | ||
b49e97c9 TS |
13443 | /* Specific to MIPS: Deal with relocation types that require |
13444 | knowing the gp of the output bfd. */ | |
b49e97c9 | 13445 | |
8236346f EC |
13446 | /* If we've managed to find the gp and have a special |
13447 | function for the relocation then go ahead, else default | |
13448 | to the generic handling. */ | |
d7a7af8f AM |
13449 | else if (gp_found |
13450 | && ((*parent)->howto->special_function | |
13451 | == _bfd_mips_elf32_gprel16_reloc)) | |
13452 | r = _bfd_mips_elf_gprel16_with_gp (input_bfd, symbol, *parent, | |
8236346f EC |
13453 | input_section, relocatable, |
13454 | data, gp); | |
13455 | else | |
d7a7af8f AM |
13456 | r = bfd_perform_relocation (input_bfd, |
13457 | *parent, | |
13458 | data, | |
8236346f EC |
13459 | input_section, |
13460 | relocatable ? abfd : NULL, | |
13461 | &error_message); | |
b49e97c9 | 13462 | |
1049f94e | 13463 | if (relocatable) |
b49e97c9 TS |
13464 | { |
13465 | asection *os = input_section->output_section; | |
13466 | ||
d7a7af8f | 13467 | /* A partial link, so keep the relocs. */ |
b49e97c9 TS |
13468 | os->orelocation[os->reloc_count] = *parent; |
13469 | os->reloc_count++; | |
13470 | } | |
13471 | ||
13472 | if (r != bfd_reloc_ok) | |
13473 | { | |
13474 | switch (r) | |
13475 | { | |
13476 | case bfd_reloc_undefined: | |
1a72702b AM |
13477 | (*link_info->callbacks->undefined_symbol) |
13478 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
0a1b45a2 | 13479 | input_bfd, input_section, (*parent)->address, true); |
b49e97c9 TS |
13480 | break; |
13481 | case bfd_reloc_dangerous: | |
9719ad41 | 13482 | BFD_ASSERT (error_message != NULL); |
1a72702b AM |
13483 | (*link_info->callbacks->reloc_dangerous) |
13484 | (link_info, error_message, | |
13485 | input_bfd, input_section, (*parent)->address); | |
b49e97c9 TS |
13486 | break; |
13487 | case bfd_reloc_overflow: | |
1a72702b AM |
13488 | (*link_info->callbacks->reloc_overflow) |
13489 | (link_info, NULL, | |
13490 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
13491 | (*parent)->howto->name, (*parent)->addend, | |
13492 | input_bfd, input_section, (*parent)->address); | |
b49e97c9 TS |
13493 | break; |
13494 | case bfd_reloc_outofrange: | |
d7a7af8f AM |
13495 | /* PR ld/13730: |
13496 | This error can result when processing some partially | |
13497 | complete binaries. Do not abort, but issue an error | |
13498 | message instead. */ | |
13499 | link_info->callbacks->einfo | |
13500 | /* xgettext:c-format */ | |
13501 | (_("%X%P: %pB(%pA): relocation \"%pR\" goes out of range\n"), | |
13502 | abfd, input_section, * parent); | |
13503 | goto error_return; | |
13504 | ||
13505 | case bfd_reloc_notsupported: | |
13506 | /* PR ld/17512 | |
13507 | This error can result when processing a corrupt binary. | |
13508 | Do not abort. Issue an error message instead. */ | |
13509 | link_info->callbacks->einfo | |
13510 | /* xgettext:c-format */ | |
13511 | (_("%X%P: %pB(%pA): relocation \"%pR\" is not supported\n"), | |
13512 | abfd, input_section, * parent); | |
13513 | goto error_return; | |
13514 | ||
b49e97c9 | 13515 | default: |
d7a7af8f AM |
13516 | /* PR 17512; file: 90c2a92e. |
13517 | Report unexpected results, without aborting. */ | |
13518 | link_info->callbacks->einfo | |
13519 | /* xgettext:c-format */ | |
13520 | (_("%X%P: %pB(%pA): relocation \"%pR\" returns an unrecognized value %x\n"), | |
13521 | abfd, input_section, * parent, r); | |
b49e97c9 TS |
13522 | break; |
13523 | } | |
13524 | ||
13525 | } | |
13526 | } | |
13527 | } | |
d7a7af8f | 13528 | |
7ebf6ed0 | 13529 | out: |
c9594989 | 13530 | free (reloc_vector); |
b49e97c9 | 13531 | return data; |
b49e97c9 TS |
13532 | } |
13533 | \f | |
0a1b45a2 | 13534 | static bool |
df58fc94 RS |
13535 | mips_elf_relax_delete_bytes (bfd *abfd, |
13536 | asection *sec, bfd_vma addr, int count) | |
13537 | { | |
13538 | Elf_Internal_Shdr *symtab_hdr; | |
13539 | unsigned int sec_shndx; | |
13540 | bfd_byte *contents; | |
13541 | Elf_Internal_Rela *irel, *irelend; | |
13542 | Elf_Internal_Sym *isym; | |
13543 | Elf_Internal_Sym *isymend; | |
13544 | struct elf_link_hash_entry **sym_hashes; | |
13545 | struct elf_link_hash_entry **end_hashes; | |
13546 | struct elf_link_hash_entry **start_hashes; | |
13547 | unsigned int symcount; | |
13548 | ||
13549 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
13550 | contents = elf_section_data (sec)->this_hdr.contents; | |
13551 | ||
13552 | irel = elf_section_data (sec)->relocs; | |
13553 | irelend = irel + sec->reloc_count; | |
13554 | ||
13555 | /* Actually delete the bytes. */ | |
13556 | memmove (contents + addr, contents + addr + count, | |
13557 | (size_t) (sec->size - addr - count)); | |
13558 | sec->size -= count; | |
13559 | ||
13560 | /* Adjust all the relocs. */ | |
13561 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
13562 | { | |
13563 | /* Get the new reloc address. */ | |
13564 | if (irel->r_offset > addr) | |
13565 | irel->r_offset -= count; | |
13566 | } | |
13567 | ||
13568 | BFD_ASSERT (addr % 2 == 0); | |
13569 | BFD_ASSERT (count % 2 == 0); | |
13570 | ||
13571 | /* Adjust the local symbols defined in this section. */ | |
13572 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
13573 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
13574 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
2309ddf2 | 13575 | if (isym->st_shndx == sec_shndx && isym->st_value > addr) |
df58fc94 RS |
13576 | isym->st_value -= count; |
13577 | ||
13578 | /* Now adjust the global symbols defined in this section. */ | |
13579 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
13580 | - symtab_hdr->sh_info); | |
13581 | sym_hashes = start_hashes = elf_sym_hashes (abfd); | |
13582 | end_hashes = sym_hashes + symcount; | |
13583 | ||
13584 | for (; sym_hashes < end_hashes; sym_hashes++) | |
13585 | { | |
13586 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
13587 | ||
13588 | if ((sym_hash->root.type == bfd_link_hash_defined | |
13589 | || sym_hash->root.type == bfd_link_hash_defweak) | |
13590 | && sym_hash->root.u.def.section == sec) | |
13591 | { | |
2309ddf2 | 13592 | bfd_vma value = sym_hash->root.u.def.value; |
df58fc94 | 13593 | |
df58fc94 RS |
13594 | if (ELF_ST_IS_MICROMIPS (sym_hash->other)) |
13595 | value &= MINUS_TWO; | |
13596 | if (value > addr) | |
13597 | sym_hash->root.u.def.value -= count; | |
13598 | } | |
13599 | } | |
13600 | ||
0a1b45a2 | 13601 | return true; |
df58fc94 RS |
13602 | } |
13603 | ||
13604 | ||
13605 | /* Opcodes needed for microMIPS relaxation as found in | |
13606 | opcodes/micromips-opc.c. */ | |
13607 | ||
13608 | struct opcode_descriptor { | |
13609 | unsigned long match; | |
13610 | unsigned long mask; | |
13611 | }; | |
13612 | ||
13613 | /* The $ra register aka $31. */ | |
13614 | ||
13615 | #define RA 31 | |
13616 | ||
13617 | /* 32-bit instruction format register fields. */ | |
13618 | ||
13619 | #define OP32_SREG(opcode) (((opcode) >> 16) & 0x1f) | |
13620 | #define OP32_TREG(opcode) (((opcode) >> 21) & 0x1f) | |
13621 | ||
13622 | /* Check if a 5-bit register index can be abbreviated to 3 bits. */ | |
13623 | ||
13624 | #define OP16_VALID_REG(r) \ | |
13625 | ((2 <= (r) && (r) <= 7) || (16 <= (r) && (r) <= 17)) | |
13626 | ||
13627 | ||
13628 | /* 32-bit and 16-bit branches. */ | |
13629 | ||
13630 | static const struct opcode_descriptor b_insns_32[] = { | |
13631 | { /* "b", "p", */ 0x40400000, 0xffff0000 }, /* bgez 0 */ | |
13632 | { /* "b", "p", */ 0x94000000, 0xffff0000 }, /* beq 0, 0 */ | |
13633 | { 0, 0 } /* End marker for find_match(). */ | |
13634 | }; | |
13635 | ||
13636 | static const struct opcode_descriptor bc_insn_32 = | |
13637 | { /* "bc(1|2)(ft)", "N,p", */ 0x42800000, 0xfec30000 }; | |
13638 | ||
13639 | static const struct opcode_descriptor bz_insn_32 = | |
13640 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }; | |
13641 | ||
13642 | static const struct opcode_descriptor bzal_insn_32 = | |
13643 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }; | |
13644 | ||
13645 | static const struct opcode_descriptor beq_insn_32 = | |
13646 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }; | |
13647 | ||
13648 | static const struct opcode_descriptor b_insn_16 = | |
13649 | { /* "b", "mD", */ 0xcc00, 0xfc00 }; | |
13650 | ||
13651 | static const struct opcode_descriptor bz_insn_16 = | |
c088dedf | 13652 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }; |
df58fc94 RS |
13653 | |
13654 | ||
13655 | /* 32-bit and 16-bit branch EQ and NE zero. */ | |
13656 | ||
13657 | /* NOTE: All opcode tables have BEQ/BNE in the same order: first the | |
13658 | eq and second the ne. This convention is used when replacing a | |
13659 | 32-bit BEQ/BNE with the 16-bit version. */ | |
13660 | ||
13661 | #define BZC32_REG_FIELD(r) (((r) & 0x1f) << 16) | |
13662 | ||
13663 | static const struct opcode_descriptor bz_rs_insns_32[] = { | |
13664 | { /* "beqz", "s,p", */ 0x94000000, 0xffe00000 }, | |
13665 | { /* "bnez", "s,p", */ 0xb4000000, 0xffe00000 }, | |
13666 | { 0, 0 } /* End marker for find_match(). */ | |
13667 | }; | |
13668 | ||
13669 | static const struct opcode_descriptor bz_rt_insns_32[] = { | |
13670 | { /* "beqz", "t,p", */ 0x94000000, 0xfc01f000 }, | |
13671 | { /* "bnez", "t,p", */ 0xb4000000, 0xfc01f000 }, | |
13672 | { 0, 0 } /* End marker for find_match(). */ | |
13673 | }; | |
13674 | ||
13675 | static const struct opcode_descriptor bzc_insns_32[] = { | |
13676 | { /* "beqzc", "s,p", */ 0x40e00000, 0xffe00000 }, | |
13677 | { /* "bnezc", "s,p", */ 0x40a00000, 0xffe00000 }, | |
13678 | { 0, 0 } /* End marker for find_match(). */ | |
13679 | }; | |
13680 | ||
13681 | static const struct opcode_descriptor bz_insns_16[] = { | |
13682 | { /* "beqz", "md,mE", */ 0x8c00, 0xfc00 }, | |
13683 | { /* "bnez", "md,mE", */ 0xac00, 0xfc00 }, | |
13684 | { 0, 0 } /* End marker for find_match(). */ | |
13685 | }; | |
13686 | ||
13687 | /* Switch between a 5-bit register index and its 3-bit shorthand. */ | |
13688 | ||
e67f83e5 | 13689 | #define BZ16_REG(opcode) ((((((opcode) >> 7) & 7) + 0x1e) & 0xf) + 2) |
eb6b0cf4 | 13690 | #define BZ16_REG_FIELD(r) (((r) & 7) << 7) |
df58fc94 RS |
13691 | |
13692 | ||
13693 | /* 32-bit instructions with a delay slot. */ | |
13694 | ||
13695 | static const struct opcode_descriptor jal_insn_32_bd16 = | |
13696 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }; | |
13697 | ||
13698 | static const struct opcode_descriptor jal_insn_32_bd32 = | |
13699 | { /* "jal", "a", */ 0xf4000000, 0xfc000000 }; | |
13700 | ||
13701 | static const struct opcode_descriptor jal_x_insn_32_bd32 = | |
13702 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }; | |
13703 | ||
13704 | static const struct opcode_descriptor j_insn_32 = | |
13705 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }; | |
13706 | ||
13707 | static const struct opcode_descriptor jalr_insn_32 = | |
13708 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }; | |
13709 | ||
13710 | /* This table can be compacted, because no opcode replacement is made. */ | |
13711 | ||
13712 | static const struct opcode_descriptor ds_insns_32_bd16[] = { | |
13713 | { /* "jals", "a", */ 0x74000000, 0xfc000000 }, | |
13714 | ||
13715 | { /* "jalrs[.hb]", "t,s", */ 0x00004f3c, 0xfc00efff }, | |
13716 | { /* "b(ge|lt)zals", "s,p", */ 0x42200000, 0xffa00000 }, | |
13717 | ||
13718 | { /* "b(g|l)(e|t)z", "s,p", */ 0x40000000, 0xff200000 }, | |
13719 | { /* "b(eq|ne)", "s,t,p", */ 0x94000000, 0xdc000000 }, | |
13720 | { /* "j", "a", */ 0xd4000000, 0xfc000000 }, | |
13721 | { 0, 0 } /* End marker for find_match(). */ | |
13722 | }; | |
13723 | ||
13724 | /* This table can be compacted, because no opcode replacement is made. */ | |
13725 | ||
13726 | static const struct opcode_descriptor ds_insns_32_bd32[] = { | |
13727 | { /* "jal[x]", "a", */ 0xf0000000, 0xf8000000 }, | |
13728 | ||
13729 | { /* "jalr[.hb]", "t,s", */ 0x00000f3c, 0xfc00efff }, | |
13730 | { /* "b(ge|lt)zal", "s,p", */ 0x40200000, 0xffa00000 }, | |
13731 | { 0, 0 } /* End marker for find_match(). */ | |
13732 | }; | |
13733 | ||
13734 | ||
13735 | /* 16-bit instructions with a delay slot. */ | |
13736 | ||
13737 | static const struct opcode_descriptor jalr_insn_16_bd16 = | |
13738 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }; | |
13739 | ||
13740 | static const struct opcode_descriptor jalr_insn_16_bd32 = | |
13741 | { /* "jalr", "my,mj", */ 0x45c0, 0xffe0 }; | |
13742 | ||
13743 | static const struct opcode_descriptor jr_insn_16 = | |
13744 | { /* "jr", "mj", */ 0x4580, 0xffe0 }; | |
13745 | ||
13746 | #define JR16_REG(opcode) ((opcode) & 0x1f) | |
13747 | ||
13748 | /* This table can be compacted, because no opcode replacement is made. */ | |
13749 | ||
13750 | static const struct opcode_descriptor ds_insns_16_bd16[] = { | |
13751 | { /* "jalrs", "my,mj", */ 0x45e0, 0xffe0 }, | |
13752 | ||
13753 | { /* "b", "mD", */ 0xcc00, 0xfc00 }, | |
13754 | { /* "b(eq|ne)z", "md,mE", */ 0x8c00, 0xdc00 }, | |
13755 | { /* "jr", "mj", */ 0x4580, 0xffe0 }, | |
13756 | { 0, 0 } /* End marker for find_match(). */ | |
13757 | }; | |
13758 | ||
13759 | ||
13760 | /* LUI instruction. */ | |
13761 | ||
13762 | static const struct opcode_descriptor lui_insn = | |
13763 | { /* "lui", "s,u", */ 0x41a00000, 0xffe00000 }; | |
13764 | ||
13765 | ||
13766 | /* ADDIU instruction. */ | |
13767 | ||
13768 | static const struct opcode_descriptor addiu_insn = | |
13769 | { /* "addiu", "t,r,j", */ 0x30000000, 0xfc000000 }; | |
13770 | ||
13771 | static const struct opcode_descriptor addiupc_insn = | |
13772 | { /* "addiu", "mb,$pc,mQ", */ 0x78000000, 0xfc000000 }; | |
13773 | ||
13774 | #define ADDIUPC_REG_FIELD(r) \ | |
13775 | (((2 <= (r) && (r) <= 7) ? (r) : ((r) - 16)) << 23) | |
13776 | ||
13777 | ||
13778 | /* Relaxable instructions in a JAL delay slot: MOVE. */ | |
13779 | ||
13780 | /* The 16-bit move has rd in 9:5 and rs in 4:0. The 32-bit moves | |
13781 | (ADDU, OR) have rd in 15:11 and rs in 10:16. */ | |
13782 | #define MOVE32_RD(opcode) (((opcode) >> 11) & 0x1f) | |
13783 | #define MOVE32_RS(opcode) (((opcode) >> 16) & 0x1f) | |
13784 | ||
13785 | #define MOVE16_RD_FIELD(r) (((r) & 0x1f) << 5) | |
13786 | #define MOVE16_RS_FIELD(r) (((r) & 0x1f) ) | |
13787 | ||
13788 | static const struct opcode_descriptor move_insns_32[] = { | |
df58fc94 | 13789 | { /* "move", "d,s", */ 0x00000290, 0xffe007ff }, /* or d,s,$0 */ |
40fc1451 | 13790 | { /* "move", "d,s", */ 0x00000150, 0xffe007ff }, /* addu d,s,$0 */ |
df58fc94 RS |
13791 | { 0, 0 } /* End marker for find_match(). */ |
13792 | }; | |
13793 | ||
13794 | static const struct opcode_descriptor move_insn_16 = | |
13795 | { /* "move", "mp,mj", */ 0x0c00, 0xfc00 }; | |
13796 | ||
13797 | ||
13798 | /* NOP instructions. */ | |
13799 | ||
13800 | static const struct opcode_descriptor nop_insn_32 = | |
13801 | { /* "nop", "", */ 0x00000000, 0xffffffff }; | |
13802 | ||
13803 | static const struct opcode_descriptor nop_insn_16 = | |
13804 | { /* "nop", "", */ 0x0c00, 0xffff }; | |
13805 | ||
13806 | ||
13807 | /* Instruction match support. */ | |
13808 | ||
13809 | #define MATCH(opcode, insn) ((opcode & insn.mask) == insn.match) | |
13810 | ||
13811 | static int | |
13812 | find_match (unsigned long opcode, const struct opcode_descriptor insn[]) | |
13813 | { | |
13814 | unsigned long indx; | |
13815 | ||
13816 | for (indx = 0; insn[indx].mask != 0; indx++) | |
13817 | if (MATCH (opcode, insn[indx])) | |
13818 | return indx; | |
13819 | ||
13820 | return -1; | |
13821 | } | |
13822 | ||
13823 | ||
13824 | /* Branch and delay slot decoding support. */ | |
13825 | ||
13826 | /* If PTR points to what *might* be a 16-bit branch or jump, then | |
13827 | return the minimum length of its delay slot, otherwise return 0. | |
13828 | Non-zero results are not definitive as we might be checking against | |
13829 | the second half of another instruction. */ | |
13830 | ||
13831 | static int | |
13832 | check_br16_dslot (bfd *abfd, bfd_byte *ptr) | |
13833 | { | |
13834 | unsigned long opcode; | |
13835 | int bdsize; | |
13836 | ||
13837 | opcode = bfd_get_16 (abfd, ptr); | |
13838 | if (MATCH (opcode, jalr_insn_16_bd32) != 0) | |
13839 | /* 16-bit branch/jump with a 32-bit delay slot. */ | |
13840 | bdsize = 4; | |
13841 | else if (MATCH (opcode, jalr_insn_16_bd16) != 0 | |
13842 | || find_match (opcode, ds_insns_16_bd16) >= 0) | |
13843 | /* 16-bit branch/jump with a 16-bit delay slot. */ | |
13844 | bdsize = 2; | |
13845 | else | |
13846 | /* No delay slot. */ | |
13847 | bdsize = 0; | |
13848 | ||
13849 | return bdsize; | |
13850 | } | |
13851 | ||
13852 | /* If PTR points to what *might* be a 32-bit branch or jump, then | |
13853 | return the minimum length of its delay slot, otherwise return 0. | |
13854 | Non-zero results are not definitive as we might be checking against | |
13855 | the second half of another instruction. */ | |
13856 | ||
13857 | static int | |
13858 | check_br32_dslot (bfd *abfd, bfd_byte *ptr) | |
13859 | { | |
13860 | unsigned long opcode; | |
13861 | int bdsize; | |
13862 | ||
d21911ea | 13863 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
13864 | if (find_match (opcode, ds_insns_32_bd32) >= 0) |
13865 | /* 32-bit branch/jump with a 32-bit delay slot. */ | |
13866 | bdsize = 4; | |
13867 | else if (find_match (opcode, ds_insns_32_bd16) >= 0) | |
13868 | /* 32-bit branch/jump with a 16-bit delay slot. */ | |
13869 | bdsize = 2; | |
13870 | else | |
13871 | /* No delay slot. */ | |
13872 | bdsize = 0; | |
13873 | ||
13874 | return bdsize; | |
13875 | } | |
13876 | ||
13877 | /* If PTR points to a 16-bit branch or jump with a 32-bit delay slot | |
13878 | that doesn't fiddle with REG, then return TRUE, otherwise FALSE. */ | |
13879 | ||
0a1b45a2 | 13880 | static bool |
df58fc94 RS |
13881 | check_br16 (bfd *abfd, bfd_byte *ptr, unsigned long reg) |
13882 | { | |
13883 | unsigned long opcode; | |
13884 | ||
13885 | opcode = bfd_get_16 (abfd, ptr); | |
13886 | if (MATCH (opcode, b_insn_16) | |
13887 | /* B16 */ | |
13888 | || (MATCH (opcode, jr_insn_16) && reg != JR16_REG (opcode)) | |
13889 | /* JR16 */ | |
13890 | || (MATCH (opcode, bz_insn_16) && reg != BZ16_REG (opcode)) | |
13891 | /* BEQZ16, BNEZ16 */ | |
13892 | || (MATCH (opcode, jalr_insn_16_bd32) | |
13893 | /* JALR16 */ | |
13894 | && reg != JR16_REG (opcode) && reg != RA)) | |
0a1b45a2 | 13895 | return true; |
df58fc94 | 13896 | |
0a1b45a2 | 13897 | return false; |
df58fc94 RS |
13898 | } |
13899 | ||
13900 | /* If PTR points to a 32-bit branch or jump that doesn't fiddle with REG, | |
13901 | then return TRUE, otherwise FALSE. */ | |
13902 | ||
0a1b45a2 | 13903 | static bool |
df58fc94 RS |
13904 | check_br32 (bfd *abfd, bfd_byte *ptr, unsigned long reg) |
13905 | { | |
13906 | unsigned long opcode; | |
13907 | ||
d21911ea | 13908 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
13909 | if (MATCH (opcode, j_insn_32) |
13910 | /* J */ | |
13911 | || MATCH (opcode, bc_insn_32) | |
13912 | /* BC1F, BC1T, BC2F, BC2T */ | |
13913 | || (MATCH (opcode, jal_x_insn_32_bd32) && reg != RA) | |
13914 | /* JAL, JALX */ | |
13915 | || (MATCH (opcode, bz_insn_32) && reg != OP32_SREG (opcode)) | |
13916 | /* BGEZ, BGTZ, BLEZ, BLTZ */ | |
13917 | || (MATCH (opcode, bzal_insn_32) | |
13918 | /* BGEZAL, BLTZAL */ | |
13919 | && reg != OP32_SREG (opcode) && reg != RA) | |
13920 | || ((MATCH (opcode, jalr_insn_32) || MATCH (opcode, beq_insn_32)) | |
13921 | /* JALR, JALR.HB, BEQ, BNE */ | |
13922 | && reg != OP32_SREG (opcode) && reg != OP32_TREG (opcode))) | |
0a1b45a2 | 13923 | return true; |
df58fc94 | 13924 | |
0a1b45a2 | 13925 | return false; |
df58fc94 RS |
13926 | } |
13927 | ||
80cab405 MR |
13928 | /* If the instruction encoding at PTR and relocations [INTERNAL_RELOCS, |
13929 | IRELEND) at OFFSET indicate that there must be a compact branch there, | |
13930 | then return TRUE, otherwise FALSE. */ | |
df58fc94 | 13931 | |
0a1b45a2 | 13932 | static bool |
80cab405 MR |
13933 | check_relocated_bzc (bfd *abfd, const bfd_byte *ptr, bfd_vma offset, |
13934 | const Elf_Internal_Rela *internal_relocs, | |
13935 | const Elf_Internal_Rela *irelend) | |
df58fc94 | 13936 | { |
80cab405 MR |
13937 | const Elf_Internal_Rela *irel; |
13938 | unsigned long opcode; | |
13939 | ||
d21911ea | 13940 | opcode = bfd_get_micromips_32 (abfd, ptr); |
80cab405 | 13941 | if (find_match (opcode, bzc_insns_32) < 0) |
0a1b45a2 | 13942 | return false; |
df58fc94 RS |
13943 | |
13944 | for (irel = internal_relocs; irel < irelend; irel++) | |
80cab405 MR |
13945 | if (irel->r_offset == offset |
13946 | && ELF32_R_TYPE (irel->r_info) == R_MICROMIPS_PC16_S1) | |
0a1b45a2 | 13947 | return true; |
80cab405 | 13948 | |
0a1b45a2 | 13949 | return false; |
df58fc94 | 13950 | } |
80cab405 MR |
13951 | |
13952 | /* Bitsize checking. */ | |
13953 | #define IS_BITSIZE(val, N) \ | |
13954 | (((((val) & ((1ULL << (N)) - 1)) ^ (1ULL << ((N) - 1))) \ | |
13955 | - (1ULL << ((N) - 1))) == (val)) | |
13956 | ||
df58fc94 | 13957 | \f |
0a1b45a2 | 13958 | bool |
df58fc94 RS |
13959 | _bfd_mips_elf_relax_section (bfd *abfd, asection *sec, |
13960 | struct bfd_link_info *link_info, | |
0a1b45a2 | 13961 | bool *again) |
df58fc94 | 13962 | { |
0a1b45a2 | 13963 | bool insn32 = mips_elf_hash_table (link_info)->insn32; |
df58fc94 RS |
13964 | Elf_Internal_Shdr *symtab_hdr; |
13965 | Elf_Internal_Rela *internal_relocs; | |
13966 | Elf_Internal_Rela *irel, *irelend; | |
13967 | bfd_byte *contents = NULL; | |
13968 | Elf_Internal_Sym *isymbuf = NULL; | |
13969 | ||
13970 | /* Assume nothing changes. */ | |
0a1b45a2 | 13971 | *again = false; |
df58fc94 RS |
13972 | |
13973 | /* We don't have to do anything for a relocatable link, if | |
13974 | this section does not have relocs, or if this is not a | |
13975 | code section. */ | |
13976 | ||
0e1862bb | 13977 | if (bfd_link_relocatable (link_info) |
df58fc94 RS |
13978 | || (sec->flags & SEC_RELOC) == 0 |
13979 | || sec->reloc_count == 0 | |
13980 | || (sec->flags & SEC_CODE) == 0) | |
0a1b45a2 | 13981 | return true; |
df58fc94 RS |
13982 | |
13983 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
13984 | ||
13985 | /* Get a copy of the native relocations. */ | |
13986 | internal_relocs = (_bfd_elf_link_read_relocs | |
2c3fc389 | 13987 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
df58fc94 RS |
13988 | link_info->keep_memory)); |
13989 | if (internal_relocs == NULL) | |
13990 | goto error_return; | |
13991 | ||
13992 | /* Walk through them looking for relaxing opportunities. */ | |
13993 | irelend = internal_relocs + sec->reloc_count; | |
13994 | for (irel = internal_relocs; irel < irelend; irel++) | |
13995 | { | |
13996 | unsigned long r_symndx = ELF32_R_SYM (irel->r_info); | |
13997 | unsigned int r_type = ELF32_R_TYPE (irel->r_info); | |
0a1b45a2 | 13998 | bool target_is_micromips_code_p; |
df58fc94 RS |
13999 | unsigned long opcode; |
14000 | bfd_vma symval; | |
14001 | bfd_vma pcrval; | |
2309ddf2 | 14002 | bfd_byte *ptr; |
df58fc94 RS |
14003 | int fndopc; |
14004 | ||
14005 | /* The number of bytes to delete for relaxation and from where | |
07d6d2b8 | 14006 | to delete these bytes starting at irel->r_offset. */ |
df58fc94 RS |
14007 | int delcnt = 0; |
14008 | int deloff = 0; | |
14009 | ||
14010 | /* If this isn't something that can be relaxed, then ignore | |
07d6d2b8 | 14011 | this reloc. */ |
df58fc94 RS |
14012 | if (r_type != R_MICROMIPS_HI16 |
14013 | && r_type != R_MICROMIPS_PC16_S1 | |
2309ddf2 | 14014 | && r_type != R_MICROMIPS_26_S1) |
df58fc94 RS |
14015 | continue; |
14016 | ||
14017 | /* Get the section contents if we haven't done so already. */ | |
14018 | if (contents == NULL) | |
14019 | { | |
14020 | /* Get cached copy if it exists. */ | |
14021 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
14022 | contents = elf_section_data (sec)->this_hdr.contents; | |
14023 | /* Go get them off disk. */ | |
14024 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
14025 | goto error_return; | |
14026 | } | |
2309ddf2 | 14027 | ptr = contents + irel->r_offset; |
df58fc94 RS |
14028 | |
14029 | /* Read this BFD's local symbols if we haven't done so already. */ | |
14030 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) | |
14031 | { | |
14032 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
14033 | if (isymbuf == NULL) | |
14034 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
14035 | symtab_hdr->sh_info, 0, | |
14036 | NULL, NULL, NULL); | |
14037 | if (isymbuf == NULL) | |
14038 | goto error_return; | |
14039 | } | |
14040 | ||
14041 | /* Get the value of the symbol referred to by the reloc. */ | |
14042 | if (r_symndx < symtab_hdr->sh_info) | |
14043 | { | |
14044 | /* A local symbol. */ | |
14045 | Elf_Internal_Sym *isym; | |
14046 | asection *sym_sec; | |
14047 | ||
14048 | isym = isymbuf + r_symndx; | |
14049 | if (isym->st_shndx == SHN_UNDEF) | |
14050 | sym_sec = bfd_und_section_ptr; | |
14051 | else if (isym->st_shndx == SHN_ABS) | |
14052 | sym_sec = bfd_abs_section_ptr; | |
14053 | else if (isym->st_shndx == SHN_COMMON) | |
14054 | sym_sec = bfd_com_section_ptr; | |
14055 | else | |
14056 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
14057 | symval = (isym->st_value | |
14058 | + sym_sec->output_section->vma | |
14059 | + sym_sec->output_offset); | |
14060 | target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (isym->st_other); | |
14061 | } | |
14062 | else | |
14063 | { | |
14064 | unsigned long indx; | |
14065 | struct elf_link_hash_entry *h; | |
14066 | ||
14067 | /* An external symbol. */ | |
14068 | indx = r_symndx - symtab_hdr->sh_info; | |
14069 | h = elf_sym_hashes (abfd)[indx]; | |
14070 | BFD_ASSERT (h != NULL); | |
14071 | ||
14072 | if (h->root.type != bfd_link_hash_defined | |
14073 | && h->root.type != bfd_link_hash_defweak) | |
14074 | /* This appears to be a reference to an undefined | |
14075 | symbol. Just ignore it -- it will be caught by the | |
14076 | regular reloc processing. */ | |
14077 | continue; | |
14078 | ||
14079 | symval = (h->root.u.def.value | |
14080 | + h->root.u.def.section->output_section->vma | |
14081 | + h->root.u.def.section->output_offset); | |
14082 | target_is_micromips_code_p = (!h->needs_plt | |
14083 | && ELF_ST_IS_MICROMIPS (h->other)); | |
14084 | } | |
14085 | ||
14086 | ||
14087 | /* For simplicity of coding, we are going to modify the | |
07d6d2b8 AM |
14088 | section contents, the section relocs, and the BFD symbol |
14089 | table. We must tell the rest of the code not to free up this | |
14090 | information. It would be possible to instead create a table | |
14091 | of changes which have to be made, as is done in coff-mips.c; | |
14092 | that would be more work, but would require less memory when | |
14093 | the linker is run. */ | |
df58fc94 RS |
14094 | |
14095 | /* Only 32-bit instructions relaxed. */ | |
14096 | if (irel->r_offset + 4 > sec->size) | |
14097 | continue; | |
14098 | ||
d21911ea | 14099 | opcode = bfd_get_micromips_32 (abfd, ptr); |
df58fc94 RS |
14100 | |
14101 | /* This is the pc-relative distance from the instruction the | |
07d6d2b8 | 14102 | relocation is applied to, to the symbol referred. */ |
df58fc94 RS |
14103 | pcrval = (symval |
14104 | - (sec->output_section->vma + sec->output_offset) | |
14105 | - irel->r_offset); | |
14106 | ||
14107 | /* R_MICROMIPS_HI16 / LUI relaxation to nil, performing relaxation | |
07d6d2b8 AM |
14108 | of corresponding R_MICROMIPS_LO16 to R_MICROMIPS_HI0_LO16 or |
14109 | R_MICROMIPS_PC23_S2. The R_MICROMIPS_PC23_S2 condition is | |
df58fc94 | 14110 | |
07d6d2b8 | 14111 | (symval % 4 == 0 && IS_BITSIZE (pcrval, 25)) |
df58fc94 | 14112 | |
07d6d2b8 AM |
14113 | where pcrval has first to be adjusted to apply against the LO16 |
14114 | location (we make the adjustment later on, when we have figured | |
14115 | out the offset). */ | |
df58fc94 RS |
14116 | if (r_type == R_MICROMIPS_HI16 && MATCH (opcode, lui_insn)) |
14117 | { | |
0a1b45a2 | 14118 | bool bzc = false; |
df58fc94 RS |
14119 | unsigned long nextopc; |
14120 | unsigned long reg; | |
14121 | bfd_vma offset; | |
14122 | ||
14123 | /* Give up if the previous reloc was a HI16 against this symbol | |
14124 | too. */ | |
14125 | if (irel > internal_relocs | |
14126 | && ELF32_R_TYPE (irel[-1].r_info) == R_MICROMIPS_HI16 | |
14127 | && ELF32_R_SYM (irel[-1].r_info) == r_symndx) | |
14128 | continue; | |
14129 | ||
14130 | /* Or if the next reloc is not a LO16 against this symbol. */ | |
14131 | if (irel + 1 >= irelend | |
14132 | || ELF32_R_TYPE (irel[1].r_info) != R_MICROMIPS_LO16 | |
14133 | || ELF32_R_SYM (irel[1].r_info) != r_symndx) | |
14134 | continue; | |
14135 | ||
14136 | /* Or if the second next reloc is a LO16 against this symbol too. */ | |
14137 | if (irel + 2 >= irelend | |
14138 | && ELF32_R_TYPE (irel[2].r_info) == R_MICROMIPS_LO16 | |
14139 | && ELF32_R_SYM (irel[2].r_info) == r_symndx) | |
14140 | continue; | |
14141 | ||
80cab405 MR |
14142 | /* See if the LUI instruction *might* be in a branch delay slot. |
14143 | We check whether what looks like a 16-bit branch or jump is | |
14144 | actually an immediate argument to a compact branch, and let | |
14145 | it through if so. */ | |
df58fc94 | 14146 | if (irel->r_offset >= 2 |
2309ddf2 | 14147 | && check_br16_dslot (abfd, ptr - 2) |
df58fc94 | 14148 | && !(irel->r_offset >= 4 |
80cab405 MR |
14149 | && (bzc = check_relocated_bzc (abfd, |
14150 | ptr - 4, irel->r_offset - 4, | |
14151 | internal_relocs, irelend)))) | |
df58fc94 RS |
14152 | continue; |
14153 | if (irel->r_offset >= 4 | |
80cab405 | 14154 | && !bzc |
2309ddf2 | 14155 | && check_br32_dslot (abfd, ptr - 4)) |
df58fc94 RS |
14156 | continue; |
14157 | ||
14158 | reg = OP32_SREG (opcode); | |
14159 | ||
14160 | /* We only relax adjacent instructions or ones separated with | |
14161 | a branch or jump that has a delay slot. The branch or jump | |
14162 | must not fiddle with the register used to hold the address. | |
14163 | Subtract 4 for the LUI itself. */ | |
14164 | offset = irel[1].r_offset - irel[0].r_offset; | |
14165 | switch (offset - 4) | |
14166 | { | |
14167 | case 0: | |
14168 | break; | |
14169 | case 2: | |
2309ddf2 | 14170 | if (check_br16 (abfd, ptr + 4, reg)) |
df58fc94 RS |
14171 | break; |
14172 | continue; | |
14173 | case 4: | |
2309ddf2 | 14174 | if (check_br32 (abfd, ptr + 4, reg)) |
df58fc94 RS |
14175 | break; |
14176 | continue; | |
14177 | default: | |
14178 | continue; | |
14179 | } | |
14180 | ||
d21911ea | 14181 | nextopc = bfd_get_micromips_32 (abfd, contents + irel[1].r_offset); |
df58fc94 RS |
14182 | |
14183 | /* Give up unless the same register is used with both | |
14184 | relocations. */ | |
14185 | if (OP32_SREG (nextopc) != reg) | |
14186 | continue; | |
14187 | ||
14188 | /* Now adjust pcrval, subtracting the offset to the LO16 reloc | |
14189 | and rounding up to take masking of the two LSBs into account. */ | |
14190 | pcrval = ((pcrval - offset + 3) | 3) ^ 3; | |
14191 | ||
14192 | /* R_MICROMIPS_LO16 relaxation to R_MICROMIPS_HI0_LO16. */ | |
14193 | if (IS_BITSIZE (symval, 16)) | |
14194 | { | |
14195 | /* Fix the relocation's type. */ | |
14196 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_HI0_LO16); | |
14197 | ||
14198 | /* Instructions using R_MICROMIPS_LO16 have the base or | |
07d6d2b8 AM |
14199 | source register in bits 20:16. This register becomes $0 |
14200 | (zero) as the result of the R_MICROMIPS_HI16 being 0. */ | |
df58fc94 RS |
14201 | nextopc &= ~0x001f0000; |
14202 | bfd_put_16 (abfd, (nextopc >> 16) & 0xffff, | |
14203 | contents + irel[1].r_offset); | |
14204 | } | |
14205 | ||
14206 | /* R_MICROMIPS_LO16 / ADDIU relaxation to R_MICROMIPS_PC23_S2. | |
14207 | We add 4 to take LUI deletion into account while checking | |
14208 | the PC-relative distance. */ | |
14209 | else if (symval % 4 == 0 | |
14210 | && IS_BITSIZE (pcrval + 4, 25) | |
14211 | && MATCH (nextopc, addiu_insn) | |
14212 | && OP32_TREG (nextopc) == OP32_SREG (nextopc) | |
14213 | && OP16_VALID_REG (OP32_TREG (nextopc))) | |
14214 | { | |
14215 | /* Fix the relocation's type. */ | |
14216 | irel[1].r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC23_S2); | |
14217 | ||
14218 | /* Replace ADDIU with the ADDIUPC version. */ | |
14219 | nextopc = (addiupc_insn.match | |
14220 | | ADDIUPC_REG_FIELD (OP32_TREG (nextopc))); | |
14221 | ||
d21911ea MR |
14222 | bfd_put_micromips_32 (abfd, nextopc, |
14223 | contents + irel[1].r_offset); | |
df58fc94 RS |
14224 | } |
14225 | ||
14226 | /* Can't do anything, give up, sigh... */ | |
14227 | else | |
14228 | continue; | |
14229 | ||
14230 | /* Fix the relocation's type. */ | |
14231 | irel->r_info = ELF32_R_INFO (r_symndx, R_MIPS_NONE); | |
14232 | ||
14233 | /* Delete the LUI instruction: 4 bytes at irel->r_offset. */ | |
14234 | delcnt = 4; | |
14235 | deloff = 0; | |
14236 | } | |
14237 | ||
14238 | /* Compact branch relaxation -- due to the multitude of macros | |
07d6d2b8 AM |
14239 | employed by the compiler/assembler, compact branches are not |
14240 | always generated. Obviously, this can/will be fixed elsewhere, | |
14241 | but there is no drawback in double checking it here. */ | |
df58fc94 RS |
14242 | else if (r_type == R_MICROMIPS_PC16_S1 |
14243 | && irel->r_offset + 5 < sec->size | |
14244 | && ((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
14245 | || (fndopc = find_match (opcode, bz_rt_insns_32)) >= 0) | |
833794fc MR |
14246 | && ((!insn32 |
14247 | && (delcnt = MATCH (bfd_get_16 (abfd, ptr + 4), | |
14248 | nop_insn_16) ? 2 : 0)) | |
14249 | || (irel->r_offset + 7 < sec->size | |
14250 | && (delcnt = MATCH (bfd_get_micromips_32 (abfd, | |
14251 | ptr + 4), | |
14252 | nop_insn_32) ? 4 : 0)))) | |
df58fc94 RS |
14253 | { |
14254 | unsigned long reg; | |
14255 | ||
14256 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
14257 | ||
14258 | /* Replace BEQZ/BNEZ with the compact version. */ | |
14259 | opcode = (bzc_insns_32[fndopc].match | |
14260 | | BZC32_REG_FIELD (reg) | |
14261 | | (opcode & 0xffff)); /* Addend value. */ | |
14262 | ||
d21911ea | 14263 | bfd_put_micromips_32 (abfd, opcode, ptr); |
df58fc94 | 14264 | |
833794fc MR |
14265 | /* Delete the delay slot NOP: two or four bytes from |
14266 | irel->offset + 4; delcnt has already been set above. */ | |
df58fc94 RS |
14267 | deloff = 4; |
14268 | } | |
14269 | ||
14270 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC10_S1. We need | |
07d6d2b8 | 14271 | to check the distance from the next instruction, so subtract 2. */ |
833794fc MR |
14272 | else if (!insn32 |
14273 | && r_type == R_MICROMIPS_PC16_S1 | |
df58fc94 RS |
14274 | && IS_BITSIZE (pcrval - 2, 11) |
14275 | && find_match (opcode, b_insns_32) >= 0) | |
14276 | { | |
14277 | /* Fix the relocation's type. */ | |
14278 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC10_S1); | |
14279 | ||
a8685210 | 14280 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
14281 | bfd_put_16 (abfd, |
14282 | (b_insn_16.match | |
14283 | | (opcode & 0x3ff)), /* Addend value. */ | |
2309ddf2 | 14284 | ptr); |
df58fc94 RS |
14285 | |
14286 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
14287 | delcnt = 2; | |
14288 | deloff = 2; | |
14289 | } | |
14290 | ||
14291 | /* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC7_S1. We need | |
07d6d2b8 | 14292 | to check the distance from the next instruction, so subtract 2. */ |
833794fc MR |
14293 | else if (!insn32 |
14294 | && r_type == R_MICROMIPS_PC16_S1 | |
df58fc94 RS |
14295 | && IS_BITSIZE (pcrval - 2, 8) |
14296 | && (((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0 | |
14297 | && OP16_VALID_REG (OP32_SREG (opcode))) | |
14298 | || ((fndopc = find_match (opcode, bz_rt_insns_32)) >= 0 | |
14299 | && OP16_VALID_REG (OP32_TREG (opcode))))) | |
14300 | { | |
14301 | unsigned long reg; | |
14302 | ||
14303 | reg = OP32_SREG (opcode) ? OP32_SREG (opcode) : OP32_TREG (opcode); | |
14304 | ||
14305 | /* Fix the relocation's type. */ | |
14306 | irel->r_info = ELF32_R_INFO (r_symndx, R_MICROMIPS_PC7_S1); | |
14307 | ||
a8685210 | 14308 | /* Replace the 32-bit opcode with a 16-bit opcode. */ |
df58fc94 RS |
14309 | bfd_put_16 (abfd, |
14310 | (bz_insns_16[fndopc].match | |
14311 | | BZ16_REG_FIELD (reg) | |
14312 | | (opcode & 0x7f)), /* Addend value. */ | |
2309ddf2 | 14313 | ptr); |
df58fc94 RS |
14314 | |
14315 | /* Delete 2 bytes from irel->r_offset + 2. */ | |
14316 | delcnt = 2; | |
14317 | deloff = 2; | |
14318 | } | |
14319 | ||
14320 | /* R_MICROMIPS_26_S1 -- JAL to JALS relaxation for microMIPS targets. */ | |
833794fc MR |
14321 | else if (!insn32 |
14322 | && r_type == R_MICROMIPS_26_S1 | |
df58fc94 RS |
14323 | && target_is_micromips_code_p |
14324 | && irel->r_offset + 7 < sec->size | |
14325 | && MATCH (opcode, jal_insn_32_bd32)) | |
14326 | { | |
14327 | unsigned long n32opc; | |
0a1b45a2 | 14328 | bool relaxed = false; |
df58fc94 | 14329 | |
d21911ea | 14330 | n32opc = bfd_get_micromips_32 (abfd, ptr + 4); |
df58fc94 RS |
14331 | |
14332 | if (MATCH (n32opc, nop_insn_32)) | |
14333 | { | |
14334 | /* Replace delay slot 32-bit NOP with a 16-bit NOP. */ | |
2309ddf2 | 14335 | bfd_put_16 (abfd, nop_insn_16.match, ptr + 4); |
df58fc94 | 14336 | |
0a1b45a2 | 14337 | relaxed = true; |
df58fc94 RS |
14338 | } |
14339 | else if (find_match (n32opc, move_insns_32) >= 0) | |
14340 | { | |
14341 | /* Replace delay slot 32-bit MOVE with 16-bit MOVE. */ | |
14342 | bfd_put_16 (abfd, | |
14343 | (move_insn_16.match | |
14344 | | MOVE16_RD_FIELD (MOVE32_RD (n32opc)) | |
14345 | | MOVE16_RS_FIELD (MOVE32_RS (n32opc))), | |
2309ddf2 | 14346 | ptr + 4); |
df58fc94 | 14347 | |
0a1b45a2 | 14348 | relaxed = true; |
df58fc94 RS |
14349 | } |
14350 | /* Other 32-bit instructions relaxable to 16-bit | |
14351 | instructions will be handled here later. */ | |
14352 | ||
14353 | if (relaxed) | |
14354 | { | |
14355 | /* JAL with 32-bit delay slot that is changed to a JALS | |
07d6d2b8 | 14356 | with 16-bit delay slot. */ |
d21911ea | 14357 | bfd_put_micromips_32 (abfd, jal_insn_32_bd16.match, ptr); |
df58fc94 RS |
14358 | |
14359 | /* Delete 2 bytes from irel->r_offset + 6. */ | |
14360 | delcnt = 2; | |
14361 | deloff = 6; | |
14362 | } | |
14363 | } | |
14364 | ||
14365 | if (delcnt != 0) | |
14366 | { | |
14367 | /* Note that we've changed the relocs, section contents, etc. */ | |
14368 | elf_section_data (sec)->relocs = internal_relocs; | |
14369 | elf_section_data (sec)->this_hdr.contents = contents; | |
14370 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
14371 | ||
14372 | /* Delete bytes depending on the delcnt and deloff. */ | |
14373 | if (!mips_elf_relax_delete_bytes (abfd, sec, | |
14374 | irel->r_offset + deloff, delcnt)) | |
14375 | goto error_return; | |
14376 | ||
14377 | /* That will change things, so we should relax again. | |
14378 | Note that this is not required, and it may be slow. */ | |
0a1b45a2 | 14379 | *again = true; |
df58fc94 RS |
14380 | } |
14381 | } | |
14382 | ||
14383 | if (isymbuf != NULL | |
14384 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
14385 | { | |
14386 | if (! link_info->keep_memory) | |
14387 | free (isymbuf); | |
14388 | else | |
14389 | { | |
14390 | /* Cache the symbols for elf_link_input_bfd. */ | |
14391 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
14392 | } | |
14393 | } | |
14394 | ||
14395 | if (contents != NULL | |
14396 | && elf_section_data (sec)->this_hdr.contents != contents) | |
14397 | { | |
14398 | if (! link_info->keep_memory) | |
14399 | free (contents); | |
14400 | else | |
14401 | { | |
14402 | /* Cache the section contents for elf_link_input_bfd. */ | |
14403 | elf_section_data (sec)->this_hdr.contents = contents; | |
14404 | } | |
14405 | } | |
14406 | ||
c9594989 | 14407 | if (elf_section_data (sec)->relocs != internal_relocs) |
df58fc94 RS |
14408 | free (internal_relocs); |
14409 | ||
0a1b45a2 | 14410 | return true; |
df58fc94 RS |
14411 | |
14412 | error_return: | |
c9594989 | 14413 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
df58fc94 | 14414 | free (isymbuf); |
c9594989 | 14415 | if (elf_section_data (sec)->this_hdr.contents != contents) |
df58fc94 | 14416 | free (contents); |
c9594989 | 14417 | if (elf_section_data (sec)->relocs != internal_relocs) |
df58fc94 RS |
14418 | free (internal_relocs); |
14419 | ||
0a1b45a2 | 14420 | return false; |
df58fc94 RS |
14421 | } |
14422 | \f | |
b49e97c9 TS |
14423 | /* Create a MIPS ELF linker hash table. */ |
14424 | ||
14425 | struct bfd_link_hash_table * | |
9719ad41 | 14426 | _bfd_mips_elf_link_hash_table_create (bfd *abfd) |
b49e97c9 TS |
14427 | { |
14428 | struct mips_elf_link_hash_table *ret; | |
986f0783 | 14429 | size_t amt = sizeof (struct mips_elf_link_hash_table); |
b49e97c9 | 14430 | |
7bf52ea2 | 14431 | ret = bfd_zmalloc (amt); |
9719ad41 | 14432 | if (ret == NULL) |
b49e97c9 TS |
14433 | return NULL; |
14434 | ||
66eb6687 AM |
14435 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
14436 | mips_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
14437 | sizeof (struct mips_elf_link_hash_entry), |
14438 | MIPS_ELF_DATA)) | |
b49e97c9 | 14439 | { |
e2d34d7d | 14440 | free (ret); |
b49e97c9 TS |
14441 | return NULL; |
14442 | } | |
1bbce132 MR |
14443 | ret->root.init_plt_refcount.plist = NULL; |
14444 | ret->root.init_plt_offset.plist = NULL; | |
b49e97c9 | 14445 | |
b49e97c9 TS |
14446 | return &ret->root.root; |
14447 | } | |
0a44bf69 RS |
14448 | |
14449 | /* Likewise, but indicate that the target is VxWorks. */ | |
14450 | ||
14451 | struct bfd_link_hash_table * | |
14452 | _bfd_mips_vxworks_link_hash_table_create (bfd *abfd) | |
14453 | { | |
14454 | struct bfd_link_hash_table *ret; | |
14455 | ||
14456 | ret = _bfd_mips_elf_link_hash_table_create (abfd); | |
14457 | if (ret) | |
14458 | { | |
14459 | struct mips_elf_link_hash_table *htab; | |
14460 | ||
14461 | htab = (struct mips_elf_link_hash_table *) ret; | |
0a1b45a2 | 14462 | htab->use_plts_and_copy_relocs = true; |
0a44bf69 RS |
14463 | } |
14464 | return ret; | |
14465 | } | |
861fb55a DJ |
14466 | |
14467 | /* A function that the linker calls if we are allowed to use PLTs | |
14468 | and copy relocs. */ | |
14469 | ||
14470 | void | |
14471 | _bfd_mips_elf_use_plts_and_copy_relocs (struct bfd_link_info *info) | |
14472 | { | |
0a1b45a2 | 14473 | mips_elf_hash_table (info)->use_plts_and_copy_relocs = true; |
861fb55a | 14474 | } |
833794fc MR |
14475 | |
14476 | /* A function that the linker calls to select between all or only | |
8b10b0b3 | 14477 | 32-bit microMIPS instructions, and between making or ignoring |
47275900 MR |
14478 | branch relocation checks for invalid transitions between ISA modes. |
14479 | Also record whether we have been configured for a GNU target. */ | |
833794fc MR |
14480 | |
14481 | void | |
0a1b45a2 AM |
14482 | _bfd_mips_elf_linker_flags (struct bfd_link_info *info, bool insn32, |
14483 | bool ignore_branch_isa, | |
14484 | bool gnu_target) | |
833794fc | 14485 | { |
8b10b0b3 MR |
14486 | mips_elf_hash_table (info)->insn32 = insn32; |
14487 | mips_elf_hash_table (info)->ignore_branch_isa = ignore_branch_isa; | |
47275900 | 14488 | mips_elf_hash_table (info)->gnu_target = gnu_target; |
833794fc | 14489 | } |
3734320d MF |
14490 | |
14491 | /* A function that the linker calls to enable use of compact branches in | |
14492 | linker generated code for MIPSR6. */ | |
14493 | ||
14494 | void | |
0a1b45a2 | 14495 | _bfd_mips_elf_compact_branches (struct bfd_link_info *info, bool on) |
3734320d MF |
14496 | { |
14497 | mips_elf_hash_table (info)->compact_branches = on; | |
14498 | } | |
14499 | ||
b49e97c9 | 14500 | \f |
c97c330b MF |
14501 | /* Structure for saying that BFD machine EXTENSION extends BASE. */ |
14502 | ||
14503 | struct mips_mach_extension | |
14504 | { | |
14505 | unsigned long extension, base; | |
14506 | }; | |
14507 | ||
14508 | ||
14509 | /* An array describing how BFD machines relate to one another. The entries | |
14510 | are ordered topologically with MIPS I extensions listed last. */ | |
14511 | ||
14512 | static const struct mips_mach_extension mips_mach_extensions[] = | |
14513 | { | |
14514 | /* MIPS64r2 extensions. */ | |
14515 | { bfd_mach_mips_octeon3, bfd_mach_mips_octeon2 }, | |
14516 | { bfd_mach_mips_octeon2, bfd_mach_mips_octeonp }, | |
14517 | { bfd_mach_mips_octeonp, bfd_mach_mips_octeon }, | |
14518 | { bfd_mach_mips_octeon, bfd_mach_mipsisa64r2 }, | |
9108bc33 | 14519 | { bfd_mach_mips_gs264e, bfd_mach_mips_gs464e }, |
bd782c07 | 14520 | { bfd_mach_mips_gs464e, bfd_mach_mips_gs464 }, |
ac8cb70f | 14521 | { bfd_mach_mips_gs464, bfd_mach_mipsisa64r2 }, |
c97c330b MF |
14522 | |
14523 | /* MIPS64 extensions. */ | |
14524 | { bfd_mach_mipsisa64r2, bfd_mach_mipsisa64 }, | |
14525 | { bfd_mach_mips_sb1, bfd_mach_mipsisa64 }, | |
14526 | { bfd_mach_mips_xlr, bfd_mach_mipsisa64 }, | |
14527 | ||
14528 | /* MIPS V extensions. */ | |
14529 | { bfd_mach_mipsisa64, bfd_mach_mips5 }, | |
14530 | ||
14531 | /* R10000 extensions. */ | |
14532 | { bfd_mach_mips12000, bfd_mach_mips10000 }, | |
14533 | { bfd_mach_mips14000, bfd_mach_mips10000 }, | |
14534 | { bfd_mach_mips16000, bfd_mach_mips10000 }, | |
14535 | ||
14536 | /* R5000 extensions. Note: the vr5500 ISA is an extension of the core | |
14537 | vr5400 ISA, but doesn't include the multimedia stuff. It seems | |
14538 | better to allow vr5400 and vr5500 code to be merged anyway, since | |
14539 | many libraries will just use the core ISA. Perhaps we could add | |
14540 | some sort of ASE flag if this ever proves a problem. */ | |
14541 | { bfd_mach_mips5500, bfd_mach_mips5400 }, | |
14542 | { bfd_mach_mips5400, bfd_mach_mips5000 }, | |
14543 | ||
14544 | /* MIPS IV extensions. */ | |
14545 | { bfd_mach_mips5, bfd_mach_mips8000 }, | |
14546 | { bfd_mach_mips10000, bfd_mach_mips8000 }, | |
14547 | { bfd_mach_mips5000, bfd_mach_mips8000 }, | |
14548 | { bfd_mach_mips7000, bfd_mach_mips8000 }, | |
14549 | { bfd_mach_mips9000, bfd_mach_mips8000 }, | |
14550 | ||
14551 | /* VR4100 extensions. */ | |
14552 | { bfd_mach_mips4120, bfd_mach_mips4100 }, | |
14553 | { bfd_mach_mips4111, bfd_mach_mips4100 }, | |
14554 | ||
14555 | /* MIPS III extensions. */ | |
14556 | { bfd_mach_mips_loongson_2e, bfd_mach_mips4000 }, | |
14557 | { bfd_mach_mips_loongson_2f, bfd_mach_mips4000 }, | |
14558 | { bfd_mach_mips8000, bfd_mach_mips4000 }, | |
14559 | { bfd_mach_mips4650, bfd_mach_mips4000 }, | |
14560 | { bfd_mach_mips4600, bfd_mach_mips4000 }, | |
14561 | { bfd_mach_mips4400, bfd_mach_mips4000 }, | |
14562 | { bfd_mach_mips4300, bfd_mach_mips4000 }, | |
14563 | { bfd_mach_mips4100, bfd_mach_mips4000 }, | |
c97c330b MF |
14564 | { bfd_mach_mips5900, bfd_mach_mips4000 }, |
14565 | ||
38bf472a MR |
14566 | /* MIPS32r3 extensions. */ |
14567 | { bfd_mach_mips_interaptiv_mr2, bfd_mach_mipsisa32r3 }, | |
14568 | ||
14569 | /* MIPS32r2 extensions. */ | |
14570 | { bfd_mach_mipsisa32r3, bfd_mach_mipsisa32r2 }, | |
14571 | ||
c97c330b MF |
14572 | /* MIPS32 extensions. */ |
14573 | { bfd_mach_mipsisa32r2, bfd_mach_mipsisa32 }, | |
14574 | ||
14575 | /* MIPS II extensions. */ | |
14576 | { bfd_mach_mips4000, bfd_mach_mips6000 }, | |
14577 | { bfd_mach_mipsisa32, bfd_mach_mips6000 }, | |
b417536f | 14578 | { bfd_mach_mips4010, bfd_mach_mips6000 }, |
c97c330b MF |
14579 | |
14580 | /* MIPS I extensions. */ | |
14581 | { bfd_mach_mips6000, bfd_mach_mips3000 }, | |
14582 | { bfd_mach_mips3900, bfd_mach_mips3000 } | |
14583 | }; | |
14584 | ||
14585 | /* Return true if bfd machine EXTENSION is an extension of machine BASE. */ | |
14586 | ||
0a1b45a2 | 14587 | static bool |
c97c330b MF |
14588 | mips_mach_extends_p (unsigned long base, unsigned long extension) |
14589 | { | |
14590 | size_t i; | |
14591 | ||
14592 | if (extension == base) | |
0a1b45a2 | 14593 | return true; |
c97c330b MF |
14594 | |
14595 | if (base == bfd_mach_mipsisa32 | |
14596 | && mips_mach_extends_p (bfd_mach_mipsisa64, extension)) | |
0a1b45a2 | 14597 | return true; |
c97c330b MF |
14598 | |
14599 | if (base == bfd_mach_mipsisa32r2 | |
14600 | && mips_mach_extends_p (bfd_mach_mipsisa64r2, extension)) | |
0a1b45a2 | 14601 | return true; |
c97c330b MF |
14602 | |
14603 | for (i = 0; i < ARRAY_SIZE (mips_mach_extensions); i++) | |
14604 | if (extension == mips_mach_extensions[i].extension) | |
14605 | { | |
14606 | extension = mips_mach_extensions[i].base; | |
14607 | if (extension == base) | |
0a1b45a2 | 14608 | return true; |
c97c330b MF |
14609 | } |
14610 | ||
0a1b45a2 | 14611 | return false; |
c97c330b MF |
14612 | } |
14613 | ||
14614 | /* Return the BFD mach for each .MIPS.abiflags ISA Extension. */ | |
14615 | ||
14616 | static unsigned long | |
14617 | bfd_mips_isa_ext_mach (unsigned int isa_ext) | |
14618 | { | |
14619 | switch (isa_ext) | |
14620 | { | |
07d6d2b8 AM |
14621 | case AFL_EXT_3900: return bfd_mach_mips3900; |
14622 | case AFL_EXT_4010: return bfd_mach_mips4010; | |
14623 | case AFL_EXT_4100: return bfd_mach_mips4100; | |
14624 | case AFL_EXT_4111: return bfd_mach_mips4111; | |
14625 | case AFL_EXT_4120: return bfd_mach_mips4120; | |
14626 | case AFL_EXT_4650: return bfd_mach_mips4650; | |
14627 | case AFL_EXT_5400: return bfd_mach_mips5400; | |
14628 | case AFL_EXT_5500: return bfd_mach_mips5500; | |
14629 | case AFL_EXT_5900: return bfd_mach_mips5900; | |
14630 | case AFL_EXT_10000: return bfd_mach_mips10000; | |
c97c330b MF |
14631 | case AFL_EXT_LOONGSON_2E: return bfd_mach_mips_loongson_2e; |
14632 | case AFL_EXT_LOONGSON_2F: return bfd_mach_mips_loongson_2f; | |
07d6d2b8 | 14633 | case AFL_EXT_SB1: return bfd_mach_mips_sb1; |
c97c330b MF |
14634 | case AFL_EXT_OCTEON: return bfd_mach_mips_octeon; |
14635 | case AFL_EXT_OCTEONP: return bfd_mach_mips_octeonp; | |
14636 | case AFL_EXT_OCTEON2: return bfd_mach_mips_octeon2; | |
07d6d2b8 AM |
14637 | case AFL_EXT_XLR: return bfd_mach_mips_xlr; |
14638 | default: return bfd_mach_mips3000; | |
c97c330b MF |
14639 | } |
14640 | } | |
14641 | ||
351cdf24 MF |
14642 | /* Return the .MIPS.abiflags value representing each ISA Extension. */ |
14643 | ||
14644 | unsigned int | |
14645 | bfd_mips_isa_ext (bfd *abfd) | |
14646 | { | |
14647 | switch (bfd_get_mach (abfd)) | |
14648 | { | |
07d6d2b8 AM |
14649 | case bfd_mach_mips3900: return AFL_EXT_3900; |
14650 | case bfd_mach_mips4010: return AFL_EXT_4010; | |
14651 | case bfd_mach_mips4100: return AFL_EXT_4100; | |
14652 | case bfd_mach_mips4111: return AFL_EXT_4111; | |
14653 | case bfd_mach_mips4120: return AFL_EXT_4120; | |
14654 | case bfd_mach_mips4650: return AFL_EXT_4650; | |
14655 | case bfd_mach_mips5400: return AFL_EXT_5400; | |
14656 | case bfd_mach_mips5500: return AFL_EXT_5500; | |
14657 | case bfd_mach_mips5900: return AFL_EXT_5900; | |
14658 | case bfd_mach_mips10000: return AFL_EXT_10000; | |
c97c330b MF |
14659 | case bfd_mach_mips_loongson_2e: return AFL_EXT_LOONGSON_2E; |
14660 | case bfd_mach_mips_loongson_2f: return AFL_EXT_LOONGSON_2F; | |
07d6d2b8 AM |
14661 | case bfd_mach_mips_sb1: return AFL_EXT_SB1; |
14662 | case bfd_mach_mips_octeon: return AFL_EXT_OCTEON; | |
14663 | case bfd_mach_mips_octeonp: return AFL_EXT_OCTEONP; | |
14664 | case bfd_mach_mips_octeon3: return AFL_EXT_OCTEON3; | |
14665 | case bfd_mach_mips_octeon2: return AFL_EXT_OCTEON2; | |
14666 | case bfd_mach_mips_xlr: return AFL_EXT_XLR; | |
38bf472a MR |
14667 | case bfd_mach_mips_interaptiv_mr2: |
14668 | return AFL_EXT_INTERAPTIV_MR2; | |
07d6d2b8 | 14669 | default: return 0; |
c97c330b MF |
14670 | } |
14671 | } | |
14672 | ||
14673 | /* Encode ISA level and revision as a single value. */ | |
14674 | #define LEVEL_REV(LEV,REV) ((LEV) << 3 | (REV)) | |
14675 | ||
14676 | /* Decode a single value into level and revision. */ | |
14677 | #define ISA_LEVEL(LEVREV) ((LEVREV) >> 3) | |
14678 | #define ISA_REV(LEVREV) ((LEVREV) & 0x7) | |
351cdf24 MF |
14679 | |
14680 | /* Update the isa_level, isa_rev, isa_ext fields of abiflags. */ | |
14681 | ||
14682 | static void | |
14683 | update_mips_abiflags_isa (bfd *abfd, Elf_Internal_ABIFlags_v0 *abiflags) | |
14684 | { | |
c97c330b | 14685 | int new_isa = 0; |
351cdf24 MF |
14686 | switch (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) |
14687 | { | |
c97c330b MF |
14688 | case E_MIPS_ARCH_1: new_isa = LEVEL_REV (1, 0); break; |
14689 | case E_MIPS_ARCH_2: new_isa = LEVEL_REV (2, 0); break; | |
14690 | case E_MIPS_ARCH_3: new_isa = LEVEL_REV (3, 0); break; | |
14691 | case E_MIPS_ARCH_4: new_isa = LEVEL_REV (4, 0); break; | |
14692 | case E_MIPS_ARCH_5: new_isa = LEVEL_REV (5, 0); break; | |
14693 | case E_MIPS_ARCH_32: new_isa = LEVEL_REV (32, 1); break; | |
14694 | case E_MIPS_ARCH_32R2: new_isa = LEVEL_REV (32, 2); break; | |
14695 | case E_MIPS_ARCH_32R6: new_isa = LEVEL_REV (32, 6); break; | |
14696 | case E_MIPS_ARCH_64: new_isa = LEVEL_REV (64, 1); break; | |
14697 | case E_MIPS_ARCH_64R2: new_isa = LEVEL_REV (64, 2); break; | |
14698 | case E_MIPS_ARCH_64R6: new_isa = LEVEL_REV (64, 6); break; | |
351cdf24 | 14699 | default: |
4eca0228 | 14700 | _bfd_error_handler |
695344c0 | 14701 | /* xgettext:c-format */ |
2c1c9679 | 14702 | (_("%pB: unknown architecture %s"), |
351cdf24 MF |
14703 | abfd, bfd_printable_name (abfd)); |
14704 | } | |
14705 | ||
c97c330b MF |
14706 | if (new_isa > LEVEL_REV (abiflags->isa_level, abiflags->isa_rev)) |
14707 | { | |
14708 | abiflags->isa_level = ISA_LEVEL (new_isa); | |
14709 | abiflags->isa_rev = ISA_REV (new_isa); | |
14710 | } | |
14711 | ||
14712 | /* Update the isa_ext if ABFD describes a further extension. */ | |
14713 | if (mips_mach_extends_p (bfd_mips_isa_ext_mach (abiflags->isa_ext), | |
14714 | bfd_get_mach (abfd))) | |
14715 | abiflags->isa_ext = bfd_mips_isa_ext (abfd); | |
351cdf24 MF |
14716 | } |
14717 | ||
14718 | /* Return true if the given ELF header flags describe a 32-bit binary. */ | |
14719 | ||
0a1b45a2 | 14720 | static bool |
351cdf24 MF |
14721 | mips_32bit_flags_p (flagword flags) |
14722 | { | |
14723 | return ((flags & EF_MIPS_32BITMODE) != 0 | |
14724 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32 | |
14725 | || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32 | |
14726 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1 | |
14727 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2 | |
14728 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32 | |
7361da2c AB |
14729 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2 |
14730 | || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6); | |
351cdf24 MF |
14731 | } |
14732 | ||
14733 | /* Infer the content of the ABI flags based on the elf header. */ | |
14734 | ||
14735 | static void | |
14736 | infer_mips_abiflags (bfd *abfd, Elf_Internal_ABIFlags_v0* abiflags) | |
14737 | { | |
14738 | obj_attribute *in_attr; | |
14739 | ||
14740 | memset (abiflags, 0, sizeof (Elf_Internal_ABIFlags_v0)); | |
14741 | update_mips_abiflags_isa (abfd, abiflags); | |
14742 | ||
14743 | if (mips_32bit_flags_p (elf_elfheader (abfd)->e_flags)) | |
14744 | abiflags->gpr_size = AFL_REG_32; | |
14745 | else | |
14746 | abiflags->gpr_size = AFL_REG_64; | |
14747 | ||
14748 | abiflags->cpr1_size = AFL_REG_NONE; | |
14749 | ||
14750 | in_attr = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU]; | |
14751 | abiflags->fp_abi = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
14752 | ||
14753 | if (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_SINGLE | |
14754 | || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_XX | |
14755 | || (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_DOUBLE | |
14756 | && abiflags->gpr_size == AFL_REG_32)) | |
14757 | abiflags->cpr1_size = AFL_REG_32; | |
14758 | else if (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_DOUBLE | |
14759 | || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_64 | |
14760 | || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_64A) | |
14761 | abiflags->cpr1_size = AFL_REG_64; | |
14762 | ||
14763 | abiflags->cpr2_size = AFL_REG_NONE; | |
14764 | ||
14765 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) | |
14766 | abiflags->ases |= AFL_ASE_MDMX; | |
14767 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
14768 | abiflags->ases |= AFL_ASE_MIPS16; | |
14769 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) | |
14770 | abiflags->ases |= AFL_ASE_MICROMIPS; | |
14771 | ||
14772 | if (abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_ANY | |
14773 | && abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_SOFT | |
14774 | && abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_64A | |
14775 | && abiflags->isa_level >= 32 | |
bdc6c06e | 14776 | && abiflags->ases != AFL_ASE_LOONGSON_EXT) |
351cdf24 MF |
14777 | abiflags->flags1 |= AFL_FLAGS1_ODDSPREG; |
14778 | } | |
14779 | ||
b49e97c9 TS |
14780 | /* We need to use a special link routine to handle the .reginfo and |
14781 | the .mdebug sections. We need to merge all instances of these | |
14782 | sections together, not write them all out sequentially. */ | |
14783 | ||
0a1b45a2 | 14784 | bool |
9719ad41 | 14785 | _bfd_mips_elf_final_link (bfd *abfd, struct bfd_link_info *info) |
b49e97c9 | 14786 | { |
b49e97c9 TS |
14787 | asection *o; |
14788 | struct bfd_link_order *p; | |
14789 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; | |
351cdf24 | 14790 | asection *rtproc_sec, *abiflags_sec; |
b49e97c9 TS |
14791 | Elf32_RegInfo reginfo; |
14792 | struct ecoff_debug_info debug; | |
861fb55a | 14793 | struct mips_htab_traverse_info hti; |
7a2a6943 NC |
14794 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
14795 | const struct ecoff_debug_swap *swap = bed->elf_backend_ecoff_debug_swap; | |
b49e97c9 | 14796 | HDRR *symhdr = &debug.symbolic_header; |
9719ad41 | 14797 | void *mdebug_handle = NULL; |
b49e97c9 TS |
14798 | asection *s; |
14799 | EXTR esym; | |
14800 | unsigned int i; | |
14801 | bfd_size_type amt; | |
0a44bf69 | 14802 | struct mips_elf_link_hash_table *htab; |
b49e97c9 TS |
14803 | |
14804 | static const char * const secname[] = | |
14805 | { | |
14806 | ".text", ".init", ".fini", ".data", | |
14807 | ".rodata", ".sdata", ".sbss", ".bss" | |
14808 | }; | |
14809 | static const int sc[] = | |
14810 | { | |
14811 | scText, scInit, scFini, scData, | |
14812 | scRData, scSData, scSBss, scBss | |
14813 | }; | |
14814 | ||
0a44bf69 | 14815 | htab = mips_elf_hash_table (info); |
4dfe6ac6 NC |
14816 | BFD_ASSERT (htab != NULL); |
14817 | ||
64575f78 MR |
14818 | /* Sort the dynamic symbols so that those with GOT entries come after |
14819 | those without. */ | |
d4596a51 | 14820 | if (!mips_elf_sort_hash_table (abfd, info)) |
0a1b45a2 | 14821 | return false; |
b49e97c9 | 14822 | |
861fb55a DJ |
14823 | /* Create any scheduled LA25 stubs. */ |
14824 | hti.info = info; | |
14825 | hti.output_bfd = abfd; | |
0a1b45a2 | 14826 | hti.error = false; |
861fb55a DJ |
14827 | htab_traverse (htab->la25_stubs, mips_elf_create_la25_stub, &hti); |
14828 | if (hti.error) | |
0a1b45a2 | 14829 | return false; |
861fb55a | 14830 | |
b49e97c9 TS |
14831 | /* Get a value for the GP register. */ |
14832 | if (elf_gp (abfd) == 0) | |
14833 | { | |
14834 | struct bfd_link_hash_entry *h; | |
14835 | ||
0a1b45a2 | 14836 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); |
9719ad41 | 14837 | if (h != NULL && h->type == bfd_link_hash_defined) |
b49e97c9 TS |
14838 | elf_gp (abfd) = (h->u.def.value |
14839 | + h->u.def.section->output_section->vma | |
14840 | + h->u.def.section->output_offset); | |
90c14f0c | 14841 | else if (htab->root.target_os == is_vxworks |
0a44bf69 RS |
14842 | && (h = bfd_link_hash_lookup (info->hash, |
14843 | "_GLOBAL_OFFSET_TABLE_", | |
0a1b45a2 | 14844 | false, false, true)) |
0a44bf69 RS |
14845 | && h->type == bfd_link_hash_defined) |
14846 | elf_gp (abfd) = (h->u.def.section->output_section->vma | |
14847 | + h->u.def.section->output_offset | |
14848 | + h->u.def.value); | |
0e1862bb | 14849 | else if (bfd_link_relocatable (info)) |
b49e97c9 TS |
14850 | { |
14851 | bfd_vma lo = MINUS_ONE; | |
14852 | ||
14853 | /* Find the GP-relative section with the lowest offset. */ | |
9719ad41 | 14854 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 TS |
14855 | if (o->vma < lo |
14856 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) | |
14857 | lo = o->vma; | |
14858 | ||
14859 | /* And calculate GP relative to that. */ | |
0a44bf69 | 14860 | elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (info); |
b49e97c9 TS |
14861 | } |
14862 | else | |
14863 | { | |
14864 | /* If the relocate_section function needs to do a reloc | |
14865 | involving the GP value, it should make a reloc_dangerous | |
14866 | callback to warn that GP is not defined. */ | |
14867 | } | |
14868 | } | |
14869 | ||
14870 | /* Go through the sections and collect the .reginfo and .mdebug | |
14871 | information. */ | |
351cdf24 | 14872 | abiflags_sec = NULL; |
b49e97c9 TS |
14873 | reginfo_sec = NULL; |
14874 | mdebug_sec = NULL; | |
14875 | gptab_data_sec = NULL; | |
14876 | gptab_bss_sec = NULL; | |
9719ad41 | 14877 | for (o = abfd->sections; o != NULL; o = o->next) |
b49e97c9 | 14878 | { |
351cdf24 MF |
14879 | if (strcmp (o->name, ".MIPS.abiflags") == 0) |
14880 | { | |
14881 | /* We have found the .MIPS.abiflags section in the output file. | |
14882 | Look through all the link_orders comprising it and remove them. | |
14883 | The data is merged in _bfd_mips_elf_merge_private_bfd_data. */ | |
14884 | for (p = o->map_head.link_order; p != NULL; p = p->next) | |
14885 | { | |
14886 | asection *input_section; | |
14887 | ||
14888 | if (p->type != bfd_indirect_link_order) | |
14889 | { | |
14890 | if (p->type == bfd_data_link_order) | |
14891 | continue; | |
14892 | abort (); | |
14893 | } | |
14894 | ||
14895 | input_section = p->u.indirect.section; | |
14896 | ||
14897 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
14898 | elf_link_input_bfd ignores this section. */ | |
14899 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
14900 | } | |
14901 | ||
14902 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
14903 | BFD_ASSERT(o->size == sizeof (Elf_External_ABIFlags_v0)); | |
14904 | ||
14905 | /* Skip this section later on (I don't think this currently | |
14906 | matters, but someday it might). */ | |
14907 | o->map_head.link_order = NULL; | |
14908 | ||
14909 | abiflags_sec = o; | |
14910 | } | |
14911 | ||
b49e97c9 TS |
14912 | if (strcmp (o->name, ".reginfo") == 0) |
14913 | { | |
14914 | memset (®info, 0, sizeof reginfo); | |
14915 | ||
14916 | /* We have found the .reginfo section in the output file. | |
14917 | Look through all the link_orders comprising it and merge | |
14918 | the information together. */ | |
8423293d | 14919 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
14920 | { |
14921 | asection *input_section; | |
14922 | bfd *input_bfd; | |
14923 | Elf32_External_RegInfo ext; | |
14924 | Elf32_RegInfo sub; | |
6798f8bf | 14925 | bfd_size_type sz; |
b49e97c9 TS |
14926 | |
14927 | if (p->type != bfd_indirect_link_order) | |
14928 | { | |
14929 | if (p->type == bfd_data_link_order) | |
14930 | continue; | |
14931 | abort (); | |
14932 | } | |
14933 | ||
14934 | input_section = p->u.indirect.section; | |
14935 | input_bfd = input_section->owner; | |
14936 | ||
6798f8bf MR |
14937 | sz = (input_section->size < sizeof (ext) |
14938 | ? input_section->size : sizeof (ext)); | |
14939 | memset (&ext, 0, sizeof (ext)); | |
b49e97c9 | 14940 | if (! bfd_get_section_contents (input_bfd, input_section, |
6798f8bf | 14941 | &ext, 0, sz)) |
0a1b45a2 | 14942 | return false; |
b49e97c9 TS |
14943 | |
14944 | bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); | |
14945 | ||
14946 | reginfo.ri_gprmask |= sub.ri_gprmask; | |
14947 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; | |
14948 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; | |
14949 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; | |
14950 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; | |
14951 | ||
14952 | /* ri_gp_value is set by the function | |
1c5e4ee9 | 14953 | `_bfd_mips_elf_section_processing' when the section is |
b49e97c9 TS |
14954 | finally written out. */ |
14955 | ||
14956 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
14957 | elf_link_input_bfd ignores this section. */ | |
14958 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
14959 | } | |
14960 | ||
14961 | /* Size has been set in _bfd_mips_elf_always_size_sections. */ | |
b248d650 | 14962 | BFD_ASSERT(o->size == sizeof (Elf32_External_RegInfo)); |
b49e97c9 TS |
14963 | |
14964 | /* Skip this section later on (I don't think this currently | |
14965 | matters, but someday it might). */ | |
8423293d | 14966 | o->map_head.link_order = NULL; |
b49e97c9 TS |
14967 | |
14968 | reginfo_sec = o; | |
14969 | } | |
14970 | ||
14971 | if (strcmp (o->name, ".mdebug") == 0) | |
14972 | { | |
14973 | struct extsym_info einfo; | |
14974 | bfd_vma last; | |
14975 | ||
14976 | /* We have found the .mdebug section in the output file. | |
14977 | Look through all the link_orders comprising it and merge | |
14978 | the information together. */ | |
14979 | symhdr->magic = swap->sym_magic; | |
14980 | /* FIXME: What should the version stamp be? */ | |
14981 | symhdr->vstamp = 0; | |
14982 | symhdr->ilineMax = 0; | |
14983 | symhdr->cbLine = 0; | |
14984 | symhdr->idnMax = 0; | |
14985 | symhdr->ipdMax = 0; | |
14986 | symhdr->isymMax = 0; | |
14987 | symhdr->ioptMax = 0; | |
14988 | symhdr->iauxMax = 0; | |
14989 | symhdr->issMax = 0; | |
14990 | symhdr->issExtMax = 0; | |
14991 | symhdr->ifdMax = 0; | |
14992 | symhdr->crfd = 0; | |
14993 | symhdr->iextMax = 0; | |
14994 | ||
14995 | /* We accumulate the debugging information itself in the | |
14996 | debug_info structure. */ | |
14997 | debug.line = NULL; | |
14998 | debug.external_dnr = NULL; | |
14999 | debug.external_pdr = NULL; | |
15000 | debug.external_sym = NULL; | |
15001 | debug.external_opt = NULL; | |
15002 | debug.external_aux = NULL; | |
15003 | debug.ss = NULL; | |
15004 | debug.ssext = debug.ssext_end = NULL; | |
15005 | debug.external_fdr = NULL; | |
15006 | debug.external_rfd = NULL; | |
15007 | debug.external_ext = debug.external_ext_end = NULL; | |
15008 | ||
15009 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
9719ad41 | 15010 | if (mdebug_handle == NULL) |
0a1b45a2 | 15011 | return false; |
b49e97c9 TS |
15012 | |
15013 | esym.jmptbl = 0; | |
15014 | esym.cobol_main = 0; | |
15015 | esym.weakext = 0; | |
15016 | esym.reserved = 0; | |
15017 | esym.ifd = ifdNil; | |
15018 | esym.asym.iss = issNil; | |
15019 | esym.asym.st = stLocal; | |
15020 | esym.asym.reserved = 0; | |
15021 | esym.asym.index = indexNil; | |
15022 | last = 0; | |
15023 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) | |
15024 | { | |
15025 | esym.asym.sc = sc[i]; | |
15026 | s = bfd_get_section_by_name (abfd, secname[i]); | |
15027 | if (s != NULL) | |
15028 | { | |
15029 | esym.asym.value = s->vma; | |
eea6121a | 15030 | last = s->vma + s->size; |
b49e97c9 TS |
15031 | } |
15032 | else | |
15033 | esym.asym.value = last; | |
15034 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
15035 | secname[i], &esym)) | |
0a1b45a2 | 15036 | return false; |
b49e97c9 TS |
15037 | } |
15038 | ||
8423293d | 15039 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
15040 | { |
15041 | asection *input_section; | |
15042 | bfd *input_bfd; | |
15043 | const struct ecoff_debug_swap *input_swap; | |
15044 | struct ecoff_debug_info input_debug; | |
15045 | char *eraw_src; | |
15046 | char *eraw_end; | |
15047 | ||
15048 | if (p->type != bfd_indirect_link_order) | |
15049 | { | |
15050 | if (p->type == bfd_data_link_order) | |
15051 | continue; | |
15052 | abort (); | |
15053 | } | |
15054 | ||
15055 | input_section = p->u.indirect.section; | |
15056 | input_bfd = input_section->owner; | |
15057 | ||
d5eaccd7 | 15058 | if (!is_mips_elf (input_bfd)) |
b49e97c9 TS |
15059 | { |
15060 | /* I don't know what a non MIPS ELF bfd would be | |
15061 | doing with a .mdebug section, but I don't really | |
15062 | want to deal with it. */ | |
15063 | continue; | |
15064 | } | |
15065 | ||
15066 | input_swap = (get_elf_backend_data (input_bfd) | |
15067 | ->elf_backend_ecoff_debug_swap); | |
15068 | ||
eea6121a | 15069 | BFD_ASSERT (p->size == input_section->size); |
b49e97c9 TS |
15070 | |
15071 | /* The ECOFF linking code expects that we have already | |
15072 | read in the debugging information and set up an | |
15073 | ecoff_debug_info structure, so we do that now. */ | |
15074 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, | |
15075 | &input_debug)) | |
0a1b45a2 | 15076 | return false; |
b49e97c9 TS |
15077 | |
15078 | if (! (bfd_ecoff_debug_accumulate | |
15079 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
15080 | &input_debug, input_swap, info))) | |
0a1b45a2 | 15081 | return false; |
b49e97c9 TS |
15082 | |
15083 | /* Loop through the external symbols. For each one with | |
15084 | interesting information, try to find the symbol in | |
15085 | the linker global hash table and save the information | |
15086 | for the output external symbols. */ | |
15087 | eraw_src = input_debug.external_ext; | |
15088 | eraw_end = (eraw_src | |
15089 | + (input_debug.symbolic_header.iextMax | |
15090 | * input_swap->external_ext_size)); | |
15091 | for (; | |
15092 | eraw_src < eraw_end; | |
15093 | eraw_src += input_swap->external_ext_size) | |
15094 | { | |
15095 | EXTR ext; | |
15096 | const char *name; | |
15097 | struct mips_elf_link_hash_entry *h; | |
15098 | ||
9719ad41 | 15099 | (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); |
b49e97c9 TS |
15100 | if (ext.asym.sc == scNil |
15101 | || ext.asym.sc == scUndefined | |
15102 | || ext.asym.sc == scSUndefined) | |
15103 | continue; | |
15104 | ||
15105 | name = input_debug.ssext + ext.asym.iss; | |
15106 | h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), | |
0a1b45a2 | 15107 | name, false, false, true); |
b49e97c9 TS |
15108 | if (h == NULL || h->esym.ifd != -2) |
15109 | continue; | |
15110 | ||
15111 | if (ext.ifd != -1) | |
15112 | { | |
15113 | BFD_ASSERT (ext.ifd | |
15114 | < input_debug.symbolic_header.ifdMax); | |
15115 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
15116 | } | |
15117 | ||
15118 | h->esym = ext; | |
15119 | } | |
15120 | ||
15121 | /* Free up the information we just read. */ | |
15122 | free (input_debug.line); | |
15123 | free (input_debug.external_dnr); | |
15124 | free (input_debug.external_pdr); | |
15125 | free (input_debug.external_sym); | |
15126 | free (input_debug.external_opt); | |
15127 | free (input_debug.external_aux); | |
15128 | free (input_debug.ss); | |
15129 | free (input_debug.ssext); | |
15130 | free (input_debug.external_fdr); | |
15131 | free (input_debug.external_rfd); | |
15132 | free (input_debug.external_ext); | |
15133 | ||
15134 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
15135 | elf_link_input_bfd ignores this section. */ | |
15136 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
15137 | } | |
15138 | ||
0e1862bb | 15139 | if (SGI_COMPAT (abfd) && bfd_link_pic (info)) |
b49e97c9 TS |
15140 | { |
15141 | /* Create .rtproc section. */ | |
87e0a731 | 15142 | rtproc_sec = bfd_get_linker_section (abfd, ".rtproc"); |
b49e97c9 TS |
15143 | if (rtproc_sec == NULL) |
15144 | { | |
15145 | flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
15146 | | SEC_LINKER_CREATED | SEC_READONLY); | |
15147 | ||
87e0a731 AM |
15148 | rtproc_sec = bfd_make_section_anyway_with_flags (abfd, |
15149 | ".rtproc", | |
15150 | flags); | |
b49e97c9 | 15151 | if (rtproc_sec == NULL |
fd361982 | 15152 | || !bfd_set_section_alignment (rtproc_sec, 4)) |
0a1b45a2 | 15153 | return false; |
b49e97c9 TS |
15154 | } |
15155 | ||
15156 | if (! mips_elf_create_procedure_table (mdebug_handle, abfd, | |
15157 | info, rtproc_sec, | |
15158 | &debug)) | |
0a1b45a2 | 15159 | return false; |
b49e97c9 TS |
15160 | } |
15161 | ||
15162 | /* Build the external symbol information. */ | |
15163 | einfo.abfd = abfd; | |
15164 | einfo.info = info; | |
15165 | einfo.debug = &debug; | |
15166 | einfo.swap = swap; | |
0a1b45a2 | 15167 | einfo.failed = false; |
b49e97c9 | 15168 | mips_elf_link_hash_traverse (mips_elf_hash_table (info), |
9719ad41 | 15169 | mips_elf_output_extsym, &einfo); |
b49e97c9 | 15170 | if (einfo.failed) |
0a1b45a2 | 15171 | return false; |
b49e97c9 TS |
15172 | |
15173 | /* Set the size of the .mdebug section. */ | |
eea6121a | 15174 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
b49e97c9 TS |
15175 | |
15176 | /* Skip this section later on (I don't think this currently | |
15177 | matters, but someday it might). */ | |
8423293d | 15178 | o->map_head.link_order = NULL; |
b49e97c9 TS |
15179 | |
15180 | mdebug_sec = o; | |
15181 | } | |
15182 | ||
08dedd66 | 15183 | if (startswith (o->name, ".gptab.")) |
b49e97c9 TS |
15184 | { |
15185 | const char *subname; | |
15186 | unsigned int c; | |
15187 | Elf32_gptab *tab; | |
15188 | Elf32_External_gptab *ext_tab; | |
15189 | unsigned int j; | |
15190 | ||
15191 | /* The .gptab.sdata and .gptab.sbss sections hold | |
15192 | information describing how the small data area would | |
15193 | change depending upon the -G switch. These sections | |
15194 | not used in executables files. */ | |
0e1862bb | 15195 | if (! bfd_link_relocatable (info)) |
b49e97c9 | 15196 | { |
8423293d | 15197 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
15198 | { |
15199 | asection *input_section; | |
15200 | ||
15201 | if (p->type != bfd_indirect_link_order) | |
15202 | { | |
15203 | if (p->type == bfd_data_link_order) | |
15204 | continue; | |
15205 | abort (); | |
15206 | } | |
15207 | ||
15208 | input_section = p->u.indirect.section; | |
15209 | ||
15210 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
15211 | elf_link_input_bfd ignores this section. */ | |
15212 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
15213 | } | |
15214 | ||
15215 | /* Skip this section later on (I don't think this | |
15216 | currently matters, but someday it might). */ | |
8423293d | 15217 | o->map_head.link_order = NULL; |
b49e97c9 TS |
15218 | |
15219 | /* Really remove the section. */ | |
5daa8fe7 | 15220 | bfd_section_list_remove (abfd, o); |
b49e97c9 TS |
15221 | --abfd->section_count; |
15222 | ||
15223 | continue; | |
15224 | } | |
15225 | ||
15226 | /* There is one gptab for initialized data, and one for | |
15227 | uninitialized data. */ | |
15228 | if (strcmp (o->name, ".gptab.sdata") == 0) | |
15229 | gptab_data_sec = o; | |
15230 | else if (strcmp (o->name, ".gptab.sbss") == 0) | |
15231 | gptab_bss_sec = o; | |
15232 | else | |
15233 | { | |
4eca0228 | 15234 | _bfd_error_handler |
695344c0 | 15235 | /* xgettext:c-format */ |
871b3ab2 | 15236 | (_("%pB: illegal section name `%pA'"), abfd, o); |
b49e97c9 | 15237 | bfd_set_error (bfd_error_nonrepresentable_section); |
0a1b45a2 | 15238 | return false; |
b49e97c9 TS |
15239 | } |
15240 | ||
15241 | /* The linker script always combines .gptab.data and | |
15242 | .gptab.sdata into .gptab.sdata, and likewise for | |
15243 | .gptab.bss and .gptab.sbss. It is possible that there is | |
15244 | no .sdata or .sbss section in the output file, in which | |
15245 | case we must change the name of the output section. */ | |
15246 | subname = o->name + sizeof ".gptab" - 1; | |
15247 | if (bfd_get_section_by_name (abfd, subname) == NULL) | |
15248 | { | |
15249 | if (o == gptab_data_sec) | |
15250 | o->name = ".gptab.data"; | |
15251 | else | |
15252 | o->name = ".gptab.bss"; | |
15253 | subname = o->name + sizeof ".gptab" - 1; | |
15254 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); | |
15255 | } | |
15256 | ||
15257 | /* Set up the first entry. */ | |
15258 | c = 1; | |
15259 | amt = c * sizeof (Elf32_gptab); | |
9719ad41 | 15260 | tab = bfd_malloc (amt); |
b49e97c9 | 15261 | if (tab == NULL) |
0a1b45a2 | 15262 | return false; |
b49e97c9 TS |
15263 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
15264 | tab[0].gt_header.gt_unused = 0; | |
15265 | ||
15266 | /* Combine the input sections. */ | |
8423293d | 15267 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
b49e97c9 TS |
15268 | { |
15269 | asection *input_section; | |
15270 | bfd *input_bfd; | |
15271 | bfd_size_type size; | |
15272 | unsigned long last; | |
15273 | bfd_size_type gpentry; | |
15274 | ||
15275 | if (p->type != bfd_indirect_link_order) | |
15276 | { | |
15277 | if (p->type == bfd_data_link_order) | |
15278 | continue; | |
15279 | abort (); | |
15280 | } | |
15281 | ||
15282 | input_section = p->u.indirect.section; | |
15283 | input_bfd = input_section->owner; | |
15284 | ||
15285 | /* Combine the gptab entries for this input section one | |
15286 | by one. We know that the input gptab entries are | |
15287 | sorted by ascending -G value. */ | |
eea6121a | 15288 | size = input_section->size; |
b49e97c9 TS |
15289 | last = 0; |
15290 | for (gpentry = sizeof (Elf32_External_gptab); | |
15291 | gpentry < size; | |
15292 | gpentry += sizeof (Elf32_External_gptab)) | |
15293 | { | |
15294 | Elf32_External_gptab ext_gptab; | |
15295 | Elf32_gptab int_gptab; | |
15296 | unsigned long val; | |
15297 | unsigned long add; | |
0a1b45a2 | 15298 | bool exact; |
b49e97c9 TS |
15299 | unsigned int look; |
15300 | ||
15301 | if (! (bfd_get_section_contents | |
9719ad41 RS |
15302 | (input_bfd, input_section, &ext_gptab, gpentry, |
15303 | sizeof (Elf32_External_gptab)))) | |
b49e97c9 TS |
15304 | { |
15305 | free (tab); | |
0a1b45a2 | 15306 | return false; |
b49e97c9 TS |
15307 | } |
15308 | ||
15309 | bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, | |
15310 | &int_gptab); | |
15311 | val = int_gptab.gt_entry.gt_g_value; | |
15312 | add = int_gptab.gt_entry.gt_bytes - last; | |
15313 | ||
0a1b45a2 | 15314 | exact = false; |
b49e97c9 TS |
15315 | for (look = 1; look < c; look++) |
15316 | { | |
15317 | if (tab[look].gt_entry.gt_g_value >= val) | |
15318 | tab[look].gt_entry.gt_bytes += add; | |
15319 | ||
15320 | if (tab[look].gt_entry.gt_g_value == val) | |
0a1b45a2 | 15321 | exact = true; |
b49e97c9 TS |
15322 | } |
15323 | ||
15324 | if (! exact) | |
15325 | { | |
15326 | Elf32_gptab *new_tab; | |
15327 | unsigned int max; | |
15328 | ||
15329 | /* We need a new table entry. */ | |
15330 | amt = (bfd_size_type) (c + 1) * sizeof (Elf32_gptab); | |
9719ad41 | 15331 | new_tab = bfd_realloc (tab, amt); |
b49e97c9 TS |
15332 | if (new_tab == NULL) |
15333 | { | |
15334 | free (tab); | |
0a1b45a2 | 15335 | return false; |
b49e97c9 TS |
15336 | } |
15337 | tab = new_tab; | |
15338 | tab[c].gt_entry.gt_g_value = val; | |
15339 | tab[c].gt_entry.gt_bytes = add; | |
15340 | ||
15341 | /* Merge in the size for the next smallest -G | |
15342 | value, since that will be implied by this new | |
15343 | value. */ | |
15344 | max = 0; | |
15345 | for (look = 1; look < c; look++) | |
15346 | { | |
15347 | if (tab[look].gt_entry.gt_g_value < val | |
15348 | && (max == 0 | |
15349 | || (tab[look].gt_entry.gt_g_value | |
15350 | > tab[max].gt_entry.gt_g_value))) | |
15351 | max = look; | |
15352 | } | |
15353 | if (max != 0) | |
15354 | tab[c].gt_entry.gt_bytes += | |
15355 | tab[max].gt_entry.gt_bytes; | |
15356 | ||
15357 | ++c; | |
15358 | } | |
15359 | ||
15360 | last = int_gptab.gt_entry.gt_bytes; | |
15361 | } | |
15362 | ||
15363 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
15364 | elf_link_input_bfd ignores this section. */ | |
15365 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
15366 | } | |
15367 | ||
15368 | /* The table must be sorted by -G value. */ | |
15369 | if (c > 2) | |
15370 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); | |
15371 | ||
15372 | /* Swap out the table. */ | |
15373 | amt = (bfd_size_type) c * sizeof (Elf32_External_gptab); | |
9719ad41 | 15374 | ext_tab = bfd_alloc (abfd, amt); |
b49e97c9 TS |
15375 | if (ext_tab == NULL) |
15376 | { | |
15377 | free (tab); | |
0a1b45a2 | 15378 | return false; |
b49e97c9 TS |
15379 | } |
15380 | ||
15381 | for (j = 0; j < c; j++) | |
15382 | bfd_mips_elf32_swap_gptab_out (abfd, tab + j, ext_tab + j); | |
15383 | free (tab); | |
15384 | ||
eea6121a | 15385 | o->size = c * sizeof (Elf32_External_gptab); |
b49e97c9 TS |
15386 | o->contents = (bfd_byte *) ext_tab; |
15387 | ||
15388 | /* Skip this section later on (I don't think this currently | |
15389 | matters, but someday it might). */ | |
8423293d | 15390 | o->map_head.link_order = NULL; |
b49e97c9 TS |
15391 | } |
15392 | } | |
15393 | ||
15394 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 15395 | if (!bfd_elf_final_link (abfd, info)) |
0a1b45a2 | 15396 | return false; |
b49e97c9 TS |
15397 | |
15398 | /* Now write out the computed sections. */ | |
15399 | ||
351cdf24 MF |
15400 | if (abiflags_sec != NULL) |
15401 | { | |
15402 | Elf_External_ABIFlags_v0 ext; | |
15403 | Elf_Internal_ABIFlags_v0 *abiflags; | |
15404 | ||
15405 | abiflags = &mips_elf_tdata (abfd)->abiflags; | |
15406 | ||
15407 | /* Set up the abiflags if no valid input sections were found. */ | |
15408 | if (!mips_elf_tdata (abfd)->abiflags_valid) | |
15409 | { | |
15410 | infer_mips_abiflags (abfd, abiflags); | |
0a1b45a2 | 15411 | mips_elf_tdata (abfd)->abiflags_valid = true; |
351cdf24 MF |
15412 | } |
15413 | bfd_mips_elf_swap_abiflags_v0_out (abfd, abiflags, &ext); | |
15414 | if (! bfd_set_section_contents (abfd, abiflags_sec, &ext, 0, sizeof ext)) | |
0a1b45a2 | 15415 | return false; |
351cdf24 MF |
15416 | } |
15417 | ||
9719ad41 | 15418 | if (reginfo_sec != NULL) |
b49e97c9 TS |
15419 | { |
15420 | Elf32_External_RegInfo ext; | |
15421 | ||
15422 | bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); | |
9719ad41 | 15423 | if (! bfd_set_section_contents (abfd, reginfo_sec, &ext, 0, sizeof ext)) |
0a1b45a2 | 15424 | return false; |
b49e97c9 TS |
15425 | } |
15426 | ||
9719ad41 | 15427 | if (mdebug_sec != NULL) |
b49e97c9 TS |
15428 | { |
15429 | BFD_ASSERT (abfd->output_has_begun); | |
15430 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
15431 | swap, info, | |
15432 | mdebug_sec->filepos)) | |
0a1b45a2 | 15433 | return false; |
b49e97c9 TS |
15434 | |
15435 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
15436 | } | |
15437 | ||
9719ad41 | 15438 | if (gptab_data_sec != NULL) |
b49e97c9 TS |
15439 | { |
15440 | if (! bfd_set_section_contents (abfd, gptab_data_sec, | |
15441 | gptab_data_sec->contents, | |
eea6121a | 15442 | 0, gptab_data_sec->size)) |
0a1b45a2 | 15443 | return false; |
b49e97c9 TS |
15444 | } |
15445 | ||
9719ad41 | 15446 | if (gptab_bss_sec != NULL) |
b49e97c9 TS |
15447 | { |
15448 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, | |
15449 | gptab_bss_sec->contents, | |
eea6121a | 15450 | 0, gptab_bss_sec->size)) |
0a1b45a2 | 15451 | return false; |
b49e97c9 TS |
15452 | } |
15453 | ||
15454 | if (SGI_COMPAT (abfd)) | |
15455 | { | |
15456 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); | |
15457 | if (rtproc_sec != NULL) | |
15458 | { | |
15459 | if (! bfd_set_section_contents (abfd, rtproc_sec, | |
15460 | rtproc_sec->contents, | |
eea6121a | 15461 | 0, rtproc_sec->size)) |
0a1b45a2 | 15462 | return false; |
b49e97c9 TS |
15463 | } |
15464 | } | |
15465 | ||
0a1b45a2 | 15466 | return true; |
b49e97c9 TS |
15467 | } |
15468 | \f | |
b2e9744f MR |
15469 | /* Merge object file header flags from IBFD into OBFD. Raise an error |
15470 | if there are conflicting settings. */ | |
15471 | ||
0a1b45a2 | 15472 | static bool |
50e03d47 | 15473 | mips_elf_merge_obj_e_flags (bfd *ibfd, struct bfd_link_info *info) |
b2e9744f | 15474 | { |
50e03d47 | 15475 | bfd *obfd = info->output_bfd; |
b2e9744f MR |
15476 | struct mips_elf_obj_tdata *out_tdata = mips_elf_tdata (obfd); |
15477 | flagword old_flags; | |
15478 | flagword new_flags; | |
0a1b45a2 | 15479 | bool ok; |
b2e9744f MR |
15480 | |
15481 | new_flags = elf_elfheader (ibfd)->e_flags; | |
15482 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; | |
15483 | old_flags = elf_elfheader (obfd)->e_flags; | |
15484 | ||
15485 | /* Check flag compatibility. */ | |
15486 | ||
15487 | new_flags &= ~EF_MIPS_NOREORDER; | |
15488 | old_flags &= ~EF_MIPS_NOREORDER; | |
15489 | ||
15490 | /* Some IRIX 6 BSD-compatibility objects have this bit set. It | |
15491 | doesn't seem to matter. */ | |
15492 | new_flags &= ~EF_MIPS_XGOT; | |
15493 | old_flags &= ~EF_MIPS_XGOT; | |
15494 | ||
15495 | /* MIPSpro generates ucode info in n64 objects. Again, we should | |
15496 | just be able to ignore this. */ | |
15497 | new_flags &= ~EF_MIPS_UCODE; | |
15498 | old_flags &= ~EF_MIPS_UCODE; | |
15499 | ||
15500 | /* DSOs should only be linked with CPIC code. */ | |
15501 | if ((ibfd->flags & DYNAMIC) != 0) | |
15502 | new_flags |= EF_MIPS_PIC | EF_MIPS_CPIC; | |
15503 | ||
15504 | if (new_flags == old_flags) | |
0a1b45a2 | 15505 | return true; |
b2e9744f | 15506 | |
0a1b45a2 | 15507 | ok = true; |
b2e9744f MR |
15508 | |
15509 | if (((new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0) | |
15510 | != ((old_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0)) | |
15511 | { | |
4eca0228 | 15512 | _bfd_error_handler |
871b3ab2 | 15513 | (_("%pB: warning: linking abicalls files with non-abicalls files"), |
b2e9744f | 15514 | ibfd); |
0a1b45a2 | 15515 | ok = true; |
b2e9744f MR |
15516 | } |
15517 | ||
15518 | if (new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) | |
15519 | elf_elfheader (obfd)->e_flags |= EF_MIPS_CPIC; | |
15520 | if (! (new_flags & EF_MIPS_PIC)) | |
15521 | elf_elfheader (obfd)->e_flags &= ~EF_MIPS_PIC; | |
15522 | ||
15523 | new_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
15524 | old_flags &= ~ (EF_MIPS_PIC | EF_MIPS_CPIC); | |
15525 | ||
15526 | /* Compare the ISAs. */ | |
15527 | if (mips_32bit_flags_p (old_flags) != mips_32bit_flags_p (new_flags)) | |
15528 | { | |
4eca0228 | 15529 | _bfd_error_handler |
871b3ab2 | 15530 | (_("%pB: linking 32-bit code with 64-bit code"), |
b2e9744f | 15531 | ibfd); |
0a1b45a2 | 15532 | ok = false; |
b2e9744f MR |
15533 | } |
15534 | else if (!mips_mach_extends_p (bfd_get_mach (ibfd), bfd_get_mach (obfd))) | |
15535 | { | |
15536 | /* OBFD's ISA isn't the same as, or an extension of, IBFD's. */ | |
15537 | if (mips_mach_extends_p (bfd_get_mach (obfd), bfd_get_mach (ibfd))) | |
15538 | { | |
15539 | /* Copy the architecture info from IBFD to OBFD. Also copy | |
15540 | the 32-bit flag (if set) so that we continue to recognise | |
15541 | OBFD as a 32-bit binary. */ | |
15542 | bfd_set_arch_info (obfd, bfd_get_arch_info (ibfd)); | |
15543 | elf_elfheader (obfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH); | |
15544 | elf_elfheader (obfd)->e_flags | |
15545 | |= new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
15546 | ||
15547 | /* Update the ABI flags isa_level, isa_rev, isa_ext fields. */ | |
15548 | update_mips_abiflags_isa (obfd, &out_tdata->abiflags); | |
15549 | ||
15550 | /* Copy across the ABI flags if OBFD doesn't use them | |
15551 | and if that was what caused us to treat IBFD as 32-bit. */ | |
15552 | if ((old_flags & EF_MIPS_ABI) == 0 | |
15553 | && mips_32bit_flags_p (new_flags) | |
15554 | && !mips_32bit_flags_p (new_flags & ~EF_MIPS_ABI)) | |
15555 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ABI; | |
15556 | } | |
15557 | else | |
15558 | { | |
15559 | /* The ISAs aren't compatible. */ | |
4eca0228 | 15560 | _bfd_error_handler |
695344c0 | 15561 | /* xgettext:c-format */ |
871b3ab2 | 15562 | (_("%pB: linking %s module with previous %s modules"), |
b2e9744f MR |
15563 | ibfd, |
15564 | bfd_printable_name (ibfd), | |
15565 | bfd_printable_name (obfd)); | |
0a1b45a2 | 15566 | ok = false; |
b2e9744f MR |
15567 | } |
15568 | } | |
15569 | ||
15570 | new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
15571 | old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE); | |
15572 | ||
15573 | /* Compare ABIs. The 64-bit ABI does not use EF_MIPS_ABI. But, it | |
15574 | does set EI_CLASS differently from any 32-bit ABI. */ | |
15575 | if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI) | |
15576 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
15577 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
15578 | { | |
15579 | /* Only error if both are set (to different values). */ | |
15580 | if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI)) | |
15581 | || (elf_elfheader (ibfd)->e_ident[EI_CLASS] | |
15582 | != elf_elfheader (obfd)->e_ident[EI_CLASS])) | |
15583 | { | |
4eca0228 | 15584 | _bfd_error_handler |
695344c0 | 15585 | /* xgettext:c-format */ |
871b3ab2 | 15586 | (_("%pB: ABI mismatch: linking %s module with previous %s modules"), |
b2e9744f MR |
15587 | ibfd, |
15588 | elf_mips_abi_name (ibfd), | |
15589 | elf_mips_abi_name (obfd)); | |
0a1b45a2 | 15590 | ok = false; |
b2e9744f MR |
15591 | } |
15592 | new_flags &= ~EF_MIPS_ABI; | |
15593 | old_flags &= ~EF_MIPS_ABI; | |
15594 | } | |
15595 | ||
15596 | /* Compare ASEs. Forbid linking MIPS16 and microMIPS ASE modules together | |
15597 | and allow arbitrary mixing of the remaining ASEs (retain the union). */ | |
15598 | if ((new_flags & EF_MIPS_ARCH_ASE) != (old_flags & EF_MIPS_ARCH_ASE)) | |
15599 | { | |
15600 | int old_micro = old_flags & EF_MIPS_ARCH_ASE_MICROMIPS; | |
15601 | int new_micro = new_flags & EF_MIPS_ARCH_ASE_MICROMIPS; | |
15602 | int old_m16 = old_flags & EF_MIPS_ARCH_ASE_M16; | |
15603 | int new_m16 = new_flags & EF_MIPS_ARCH_ASE_M16; | |
15604 | int micro_mis = old_m16 && new_micro; | |
15605 | int m16_mis = old_micro && new_m16; | |
15606 | ||
15607 | if (m16_mis || micro_mis) | |
15608 | { | |
4eca0228 | 15609 | _bfd_error_handler |
695344c0 | 15610 | /* xgettext:c-format */ |
871b3ab2 | 15611 | (_("%pB: ASE mismatch: linking %s module with previous %s modules"), |
b2e9744f MR |
15612 | ibfd, |
15613 | m16_mis ? "MIPS16" : "microMIPS", | |
15614 | m16_mis ? "microMIPS" : "MIPS16"); | |
0a1b45a2 | 15615 | ok = false; |
b2e9744f MR |
15616 | } |
15617 | ||
15618 | elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_ARCH_ASE; | |
15619 | ||
15620 | new_flags &= ~ EF_MIPS_ARCH_ASE; | |
15621 | old_flags &= ~ EF_MIPS_ARCH_ASE; | |
15622 | } | |
15623 | ||
15624 | /* Compare NaN encodings. */ | |
15625 | if ((new_flags & EF_MIPS_NAN2008) != (old_flags & EF_MIPS_NAN2008)) | |
15626 | { | |
695344c0 | 15627 | /* xgettext:c-format */ |
871b3ab2 | 15628 | _bfd_error_handler (_("%pB: linking %s module with previous %s modules"), |
b2e9744f MR |
15629 | ibfd, |
15630 | (new_flags & EF_MIPS_NAN2008 | |
15631 | ? "-mnan=2008" : "-mnan=legacy"), | |
15632 | (old_flags & EF_MIPS_NAN2008 | |
15633 | ? "-mnan=2008" : "-mnan=legacy")); | |
0a1b45a2 | 15634 | ok = false; |
b2e9744f MR |
15635 | new_flags &= ~EF_MIPS_NAN2008; |
15636 | old_flags &= ~EF_MIPS_NAN2008; | |
15637 | } | |
15638 | ||
15639 | /* Compare FP64 state. */ | |
15640 | if ((new_flags & EF_MIPS_FP64) != (old_flags & EF_MIPS_FP64)) | |
15641 | { | |
695344c0 | 15642 | /* xgettext:c-format */ |
871b3ab2 | 15643 | _bfd_error_handler (_("%pB: linking %s module with previous %s modules"), |
b2e9744f MR |
15644 | ibfd, |
15645 | (new_flags & EF_MIPS_FP64 | |
15646 | ? "-mfp64" : "-mfp32"), | |
15647 | (old_flags & EF_MIPS_FP64 | |
15648 | ? "-mfp64" : "-mfp32")); | |
0a1b45a2 | 15649 | ok = false; |
b2e9744f MR |
15650 | new_flags &= ~EF_MIPS_FP64; |
15651 | old_flags &= ~EF_MIPS_FP64; | |
15652 | } | |
15653 | ||
15654 | /* Warn about any other mismatches */ | |
15655 | if (new_flags != old_flags) | |
15656 | { | |
695344c0 | 15657 | /* xgettext:c-format */ |
4eca0228 | 15658 | _bfd_error_handler |
871b3ab2 | 15659 | (_("%pB: uses different e_flags (%#x) fields than previous modules " |
d42c267e AM |
15660 | "(%#x)"), |
15661 | ibfd, new_flags, old_flags); | |
0a1b45a2 | 15662 | ok = false; |
b2e9744f MR |
15663 | } |
15664 | ||
15665 | return ok; | |
15666 | } | |
15667 | ||
2cf19d5c JM |
15668 | /* Merge object attributes from IBFD into OBFD. Raise an error if |
15669 | there are conflicting attributes. */ | |
0a1b45a2 | 15670 | static bool |
50e03d47 | 15671 | mips_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info) |
2cf19d5c | 15672 | { |
50e03d47 | 15673 | bfd *obfd = info->output_bfd; |
2cf19d5c JM |
15674 | obj_attribute *in_attr; |
15675 | obj_attribute *out_attr; | |
6ae68ba3 | 15676 | bfd *abi_fp_bfd; |
b60bf9be | 15677 | bfd *abi_msa_bfd; |
6ae68ba3 MR |
15678 | |
15679 | abi_fp_bfd = mips_elf_tdata (obfd)->abi_fp_bfd; | |
15680 | in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
d929bc19 | 15681 | if (!abi_fp_bfd && in_attr[Tag_GNU_MIPS_ABI_FP].i != Val_GNU_MIPS_ABI_FP_ANY) |
6ae68ba3 | 15682 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; |
2cf19d5c | 15683 | |
b60bf9be CF |
15684 | abi_msa_bfd = mips_elf_tdata (obfd)->abi_msa_bfd; |
15685 | if (!abi_msa_bfd | |
15686 | && in_attr[Tag_GNU_MIPS_ABI_MSA].i != Val_GNU_MIPS_ABI_MSA_ANY) | |
15687 | mips_elf_tdata (obfd)->abi_msa_bfd = ibfd; | |
15688 | ||
2cf19d5c JM |
15689 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
15690 | { | |
15691 | /* This is the first object. Copy the attributes. */ | |
15692 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
15693 | ||
15694 | /* Use the Tag_null value to indicate the attributes have been | |
15695 | initialized. */ | |
15696 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
15697 | ||
0a1b45a2 | 15698 | return true; |
2cf19d5c JM |
15699 | } |
15700 | ||
15701 | /* Check for conflicting Tag_GNU_MIPS_ABI_FP attributes and merge | |
15702 | non-conflicting ones. */ | |
2cf19d5c JM |
15703 | out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; |
15704 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i != out_attr[Tag_GNU_MIPS_ABI_FP].i) | |
15705 | { | |
757a636f | 15706 | int out_fp, in_fp; |
6ae68ba3 | 15707 | |
757a636f RS |
15708 | out_fp = out_attr[Tag_GNU_MIPS_ABI_FP].i; |
15709 | in_fp = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15710 | out_attr[Tag_GNU_MIPS_ABI_FP].type = 1; | |
15711 | if (out_fp == Val_GNU_MIPS_ABI_FP_ANY) | |
15712 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_fp; | |
351cdf24 MF |
15713 | else if (out_fp == Val_GNU_MIPS_ABI_FP_XX |
15714 | && (in_fp == Val_GNU_MIPS_ABI_FP_DOUBLE | |
15715 | || in_fp == Val_GNU_MIPS_ABI_FP_64 | |
15716 | || in_fp == Val_GNU_MIPS_ABI_FP_64A)) | |
15717 | { | |
15718 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; | |
15719 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15720 | } | |
15721 | else if (in_fp == Val_GNU_MIPS_ABI_FP_XX | |
15722 | && (out_fp == Val_GNU_MIPS_ABI_FP_DOUBLE | |
15723 | || out_fp == Val_GNU_MIPS_ABI_FP_64 | |
15724 | || out_fp == Val_GNU_MIPS_ABI_FP_64A)) | |
15725 | /* Keep the current setting. */; | |
15726 | else if (out_fp == Val_GNU_MIPS_ABI_FP_64A | |
15727 | && in_fp == Val_GNU_MIPS_ABI_FP_64) | |
15728 | { | |
15729 | mips_elf_tdata (obfd)->abi_fp_bfd = ibfd; | |
15730 | out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15731 | } | |
15732 | else if (in_fp == Val_GNU_MIPS_ABI_FP_64A | |
15733 | && out_fp == Val_GNU_MIPS_ABI_FP_64) | |
15734 | /* Keep the current setting. */; | |
757a636f RS |
15735 | else if (in_fp != Val_GNU_MIPS_ABI_FP_ANY) |
15736 | { | |
15737 | const char *out_string, *in_string; | |
6ae68ba3 | 15738 | |
757a636f RS |
15739 | out_string = _bfd_mips_fp_abi_string (out_fp); |
15740 | in_string = _bfd_mips_fp_abi_string (in_fp); | |
15741 | /* First warn about cases involving unrecognised ABIs. */ | |
15742 | if (!out_string && !in_string) | |
695344c0 | 15743 | /* xgettext:c-format */ |
757a636f | 15744 | _bfd_error_handler |
2c1c9679 | 15745 | (_("warning: %pB uses unknown floating point ABI %d " |
871b3ab2 | 15746 | "(set by %pB), %pB uses unknown floating point ABI %d"), |
c08bb8dd | 15747 | obfd, out_fp, abi_fp_bfd, ibfd, in_fp); |
757a636f RS |
15748 | else if (!out_string) |
15749 | _bfd_error_handler | |
695344c0 | 15750 | /* xgettext:c-format */ |
2c1c9679 | 15751 | (_("warning: %pB uses unknown floating point ABI %d " |
871b3ab2 | 15752 | "(set by %pB), %pB uses %s"), |
c08bb8dd | 15753 | obfd, out_fp, abi_fp_bfd, ibfd, in_string); |
757a636f RS |
15754 | else if (!in_string) |
15755 | _bfd_error_handler | |
695344c0 | 15756 | /* xgettext:c-format */ |
2c1c9679 | 15757 | (_("warning: %pB uses %s (set by %pB), " |
871b3ab2 | 15758 | "%pB uses unknown floating point ABI %d"), |
c08bb8dd | 15759 | obfd, out_string, abi_fp_bfd, ibfd, in_fp); |
757a636f RS |
15760 | else |
15761 | { | |
15762 | /* If one of the bfds is soft-float, the other must be | |
15763 | hard-float. The exact choice of hard-float ABI isn't | |
15764 | really relevant to the error message. */ | |
15765 | if (in_fp == Val_GNU_MIPS_ABI_FP_SOFT) | |
15766 | out_string = "-mhard-float"; | |
15767 | else if (out_fp == Val_GNU_MIPS_ABI_FP_SOFT) | |
15768 | in_string = "-mhard-float"; | |
15769 | _bfd_error_handler | |
695344c0 | 15770 | /* xgettext:c-format */ |
2c1c9679 | 15771 | (_("warning: %pB uses %s (set by %pB), %pB uses %s"), |
c08bb8dd | 15772 | obfd, out_string, abi_fp_bfd, ibfd, in_string); |
757a636f RS |
15773 | } |
15774 | } | |
2cf19d5c JM |
15775 | } |
15776 | ||
b60bf9be CF |
15777 | /* Check for conflicting Tag_GNU_MIPS_ABI_MSA attributes and merge |
15778 | non-conflicting ones. */ | |
15779 | if (in_attr[Tag_GNU_MIPS_ABI_MSA].i != out_attr[Tag_GNU_MIPS_ABI_MSA].i) | |
15780 | { | |
15781 | out_attr[Tag_GNU_MIPS_ABI_MSA].type = 1; | |
15782 | if (out_attr[Tag_GNU_MIPS_ABI_MSA].i == Val_GNU_MIPS_ABI_MSA_ANY) | |
15783 | out_attr[Tag_GNU_MIPS_ABI_MSA].i = in_attr[Tag_GNU_MIPS_ABI_MSA].i; | |
15784 | else if (in_attr[Tag_GNU_MIPS_ABI_MSA].i != Val_GNU_MIPS_ABI_MSA_ANY) | |
15785 | switch (out_attr[Tag_GNU_MIPS_ABI_MSA].i) | |
15786 | { | |
15787 | case Val_GNU_MIPS_ABI_MSA_128: | |
15788 | _bfd_error_handler | |
695344c0 | 15789 | /* xgettext:c-format */ |
2c1c9679 | 15790 | (_("warning: %pB uses %s (set by %pB), " |
871b3ab2 | 15791 | "%pB uses unknown MSA ABI %d"), |
c08bb8dd AM |
15792 | obfd, "-mmsa", abi_msa_bfd, |
15793 | ibfd, in_attr[Tag_GNU_MIPS_ABI_MSA].i); | |
b60bf9be CF |
15794 | break; |
15795 | ||
15796 | default: | |
15797 | switch (in_attr[Tag_GNU_MIPS_ABI_MSA].i) | |
15798 | { | |
15799 | case Val_GNU_MIPS_ABI_MSA_128: | |
15800 | _bfd_error_handler | |
695344c0 | 15801 | /* xgettext:c-format */ |
2c1c9679 | 15802 | (_("warning: %pB uses unknown MSA ABI %d " |
871b3ab2 | 15803 | "(set by %pB), %pB uses %s"), |
c08bb8dd AM |
15804 | obfd, out_attr[Tag_GNU_MIPS_ABI_MSA].i, |
15805 | abi_msa_bfd, ibfd, "-mmsa"); | |
b60bf9be CF |
15806 | break; |
15807 | ||
15808 | default: | |
15809 | _bfd_error_handler | |
695344c0 | 15810 | /* xgettext:c-format */ |
2c1c9679 | 15811 | (_("warning: %pB uses unknown MSA ABI %d " |
871b3ab2 | 15812 | "(set by %pB), %pB uses unknown MSA ABI %d"), |
c08bb8dd AM |
15813 | obfd, out_attr[Tag_GNU_MIPS_ABI_MSA].i, |
15814 | abi_msa_bfd, ibfd, in_attr[Tag_GNU_MIPS_ABI_MSA].i); | |
b60bf9be CF |
15815 | break; |
15816 | } | |
15817 | } | |
15818 | } | |
15819 | ||
2cf19d5c | 15820 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 15821 | return _bfd_elf_merge_object_attributes (ibfd, info); |
2cf19d5c JM |
15822 | } |
15823 | ||
a3dc0a7f MR |
15824 | /* Merge object ABI flags from IBFD into OBFD. Raise an error if |
15825 | there are conflicting settings. */ | |
15826 | ||
0a1b45a2 | 15827 | static bool |
a3dc0a7f MR |
15828 | mips_elf_merge_obj_abiflags (bfd *ibfd, bfd *obfd) |
15829 | { | |
15830 | obj_attribute *out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
15831 | struct mips_elf_obj_tdata *out_tdata = mips_elf_tdata (obfd); | |
15832 | struct mips_elf_obj_tdata *in_tdata = mips_elf_tdata (ibfd); | |
15833 | ||
15834 | /* Update the output abiflags fp_abi using the computed fp_abi. */ | |
15835 | out_tdata->abiflags.fp_abi = out_attr[Tag_GNU_MIPS_ABI_FP].i; | |
15836 | ||
15837 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
15838 | /* Merge abiflags. */ | |
15839 | out_tdata->abiflags.isa_level = max (out_tdata->abiflags.isa_level, | |
15840 | in_tdata->abiflags.isa_level); | |
15841 | out_tdata->abiflags.isa_rev = max (out_tdata->abiflags.isa_rev, | |
15842 | in_tdata->abiflags.isa_rev); | |
15843 | out_tdata->abiflags.gpr_size = max (out_tdata->abiflags.gpr_size, | |
15844 | in_tdata->abiflags.gpr_size); | |
15845 | out_tdata->abiflags.cpr1_size = max (out_tdata->abiflags.cpr1_size, | |
15846 | in_tdata->abiflags.cpr1_size); | |
15847 | out_tdata->abiflags.cpr2_size = max (out_tdata->abiflags.cpr2_size, | |
15848 | in_tdata->abiflags.cpr2_size); | |
15849 | #undef max | |
15850 | out_tdata->abiflags.ases |= in_tdata->abiflags.ases; | |
15851 | out_tdata->abiflags.flags1 |= in_tdata->abiflags.flags1; | |
15852 | ||
0a1b45a2 | 15853 | return true; |
a3dc0a7f MR |
15854 | } |
15855 | ||
b49e97c9 TS |
15856 | /* Merge backend specific data from an object file to the output |
15857 | object file when linking. */ | |
15858 | ||
0a1b45a2 | 15859 | bool |
50e03d47 | 15860 | _bfd_mips_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
b49e97c9 | 15861 | { |
50e03d47 | 15862 | bfd *obfd = info->output_bfd; |
cf8502c1 MR |
15863 | struct mips_elf_obj_tdata *out_tdata; |
15864 | struct mips_elf_obj_tdata *in_tdata; | |
0a1b45a2 | 15865 | bool null_input_bfd = true; |
b49e97c9 | 15866 | asection *sec; |
0a1b45a2 | 15867 | bool ok; |
b49e97c9 | 15868 | |
58238693 | 15869 | /* Check if we have the same endianness. */ |
50e03d47 | 15870 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
aa701218 | 15871 | { |
4eca0228 | 15872 | _bfd_error_handler |
871b3ab2 | 15873 | (_("%pB: endianness incompatible with that of the selected emulation"), |
d003868e | 15874 | ibfd); |
0a1b45a2 | 15875 | return false; |
aa701218 | 15876 | } |
b49e97c9 | 15877 | |
d5eaccd7 | 15878 | if (!is_mips_elf (ibfd) || !is_mips_elf (obfd)) |
0a1b45a2 | 15879 | return true; |
b49e97c9 | 15880 | |
cf8502c1 MR |
15881 | in_tdata = mips_elf_tdata (ibfd); |
15882 | out_tdata = mips_elf_tdata (obfd); | |
15883 | ||
aa701218 AO |
15884 | if (strcmp (bfd_get_target (ibfd), bfd_get_target (obfd)) != 0) |
15885 | { | |
4eca0228 | 15886 | _bfd_error_handler |
871b3ab2 | 15887 | (_("%pB: ABI is incompatible with that of the selected emulation"), |
d003868e | 15888 | ibfd); |
0a1b45a2 | 15889 | return false; |
aa701218 AO |
15890 | } |
15891 | ||
23ba6f18 MR |
15892 | /* Check to see if the input BFD actually contains any sections. If not, |
15893 | then it has no attributes, and its flags may not have been initialized | |
15894 | either, but it cannot actually cause any incompatibility. */ | |
6b728d32 | 15895 | /* FIXME: This excludes any input shared library from consideration. */ |
351cdf24 MF |
15896 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
15897 | { | |
15898 | /* Ignore synthetic sections and empty .text, .data and .bss sections | |
15899 | which are automatically generated by gas. Also ignore fake | |
15900 | (s)common sections, since merely defining a common symbol does | |
15901 | not affect compatibility. */ | |
15902 | if ((sec->flags & SEC_IS_COMMON) == 0 | |
15903 | && strcmp (sec->name, ".reginfo") | |
15904 | && strcmp (sec->name, ".mdebug") | |
15905 | && (sec->size != 0 | |
15906 | || (strcmp (sec->name, ".text") | |
15907 | && strcmp (sec->name, ".data") | |
15908 | && strcmp (sec->name, ".bss")))) | |
15909 | { | |
0a1b45a2 | 15910 | null_input_bfd = false; |
351cdf24 MF |
15911 | break; |
15912 | } | |
15913 | } | |
15914 | if (null_input_bfd) | |
0a1b45a2 | 15915 | return true; |
351cdf24 | 15916 | |
28d45e28 | 15917 | /* Populate abiflags using existing information. */ |
23ba6f18 MR |
15918 | if (in_tdata->abiflags_valid) |
15919 | { | |
15920 | obj_attribute *in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
28d45e28 MR |
15921 | Elf_Internal_ABIFlags_v0 in_abiflags; |
15922 | Elf_Internal_ABIFlags_v0 abiflags; | |
15923 | ||
15924 | /* Set up the FP ABI attribute from the abiflags if it is not already | |
07d6d2b8 | 15925 | set. */ |
23ba6f18 | 15926 | if (in_attr[Tag_GNU_MIPS_ABI_FP].i == Val_GNU_MIPS_ABI_FP_ANY) |
07d6d2b8 | 15927 | in_attr[Tag_GNU_MIPS_ABI_FP].i = in_tdata->abiflags.fp_abi; |
23ba6f18 | 15928 | |
351cdf24 | 15929 | infer_mips_abiflags (ibfd, &abiflags); |
cf8502c1 | 15930 | in_abiflags = in_tdata->abiflags; |
351cdf24 MF |
15931 | |
15932 | /* It is not possible to infer the correct ISA revision | |
07d6d2b8 | 15933 | for R3 or R5 so drop down to R2 for the checks. */ |
351cdf24 MF |
15934 | if (in_abiflags.isa_rev == 3 || in_abiflags.isa_rev == 5) |
15935 | in_abiflags.isa_rev = 2; | |
15936 | ||
c97c330b MF |
15937 | if (LEVEL_REV (in_abiflags.isa_level, in_abiflags.isa_rev) |
15938 | < LEVEL_REV (abiflags.isa_level, abiflags.isa_rev)) | |
4eca0228 | 15939 | _bfd_error_handler |
2c1c9679 | 15940 | (_("%pB: warning: inconsistent ISA between e_flags and " |
351cdf24 MF |
15941 | ".MIPS.abiflags"), ibfd); |
15942 | if (abiflags.fp_abi != Val_GNU_MIPS_ABI_FP_ANY | |
15943 | && in_abiflags.fp_abi != abiflags.fp_abi) | |
4eca0228 | 15944 | _bfd_error_handler |
2c1c9679 | 15945 | (_("%pB: warning: inconsistent FP ABI between .gnu.attributes and " |
351cdf24 MF |
15946 | ".MIPS.abiflags"), ibfd); |
15947 | if ((in_abiflags.ases & abiflags.ases) != abiflags.ases) | |
4eca0228 | 15948 | _bfd_error_handler |
2c1c9679 | 15949 | (_("%pB: warning: inconsistent ASEs between e_flags and " |
351cdf24 | 15950 | ".MIPS.abiflags"), ibfd); |
c97c330b MF |
15951 | /* The isa_ext is allowed to be an extension of what can be inferred |
15952 | from e_flags. */ | |
15953 | if (!mips_mach_extends_p (bfd_mips_isa_ext_mach (abiflags.isa_ext), | |
15954 | bfd_mips_isa_ext_mach (in_abiflags.isa_ext))) | |
4eca0228 | 15955 | _bfd_error_handler |
2c1c9679 | 15956 | (_("%pB: warning: inconsistent ISA extensions between e_flags and " |
351cdf24 MF |
15957 | ".MIPS.abiflags"), ibfd); |
15958 | if (in_abiflags.flags2 != 0) | |
4eca0228 | 15959 | _bfd_error_handler |
2c1c9679 | 15960 | (_("%pB: warning: unexpected flag in the flags2 field of " |
351cdf24 | 15961 | ".MIPS.abiflags (0x%lx)"), ibfd, |
d42c267e | 15962 | in_abiflags.flags2); |
351cdf24 | 15963 | } |
28d45e28 MR |
15964 | else |
15965 | { | |
15966 | infer_mips_abiflags (ibfd, &in_tdata->abiflags); | |
0a1b45a2 | 15967 | in_tdata->abiflags_valid = true; |
28d45e28 MR |
15968 | } |
15969 | ||
cf8502c1 | 15970 | if (!out_tdata->abiflags_valid) |
351cdf24 MF |
15971 | { |
15972 | /* Copy input abiflags if output abiflags are not already valid. */ | |
cf8502c1 | 15973 | out_tdata->abiflags = in_tdata->abiflags; |
0a1b45a2 | 15974 | out_tdata->abiflags_valid = true; |
351cdf24 | 15975 | } |
b49e97c9 TS |
15976 | |
15977 | if (! elf_flags_init (obfd)) | |
15978 | { | |
0a1b45a2 | 15979 | elf_flags_init (obfd) = true; |
351cdf24 | 15980 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b49e97c9 TS |
15981 | elf_elfheader (obfd)->e_ident[EI_CLASS] |
15982 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
15983 | ||
15984 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2907b861 | 15985 | && (bfd_get_arch_info (obfd)->the_default |
68ffbac6 | 15986 | || mips_mach_extends_p (bfd_get_mach (obfd), |
2907b861 | 15987 | bfd_get_mach (ibfd)))) |
b49e97c9 TS |
15988 | { |
15989 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
15990 | bfd_get_mach (ibfd))) | |
0a1b45a2 | 15991 | return false; |
351cdf24 MF |
15992 | |
15993 | /* Update the ABI flags isa_level, isa_rev and isa_ext fields. */ | |
cf8502c1 | 15994 | update_mips_abiflags_isa (obfd, &out_tdata->abiflags); |
b49e97c9 TS |
15995 | } |
15996 | ||
0a1b45a2 | 15997 | ok = true; |
b49e97c9 | 15998 | } |
d537eeb5 | 15999 | else |
50e03d47 | 16000 | ok = mips_elf_merge_obj_e_flags (ibfd, info); |
d537eeb5 | 16001 | |
50e03d47 | 16002 | ok = mips_elf_merge_obj_attributes (ibfd, info) && ok; |
b49e97c9 | 16003 | |
a3dc0a7f | 16004 | ok = mips_elf_merge_obj_abiflags (ibfd, obfd) && ok; |
351cdf24 | 16005 | |
d537eeb5 | 16006 | if (!ok) |
b49e97c9 TS |
16007 | { |
16008 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 16009 | return false; |
b49e97c9 TS |
16010 | } |
16011 | ||
0a1b45a2 | 16012 | return true; |
b49e97c9 TS |
16013 | } |
16014 | ||
16015 | /* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ | |
16016 | ||
0a1b45a2 | 16017 | bool |
9719ad41 | 16018 | _bfd_mips_elf_set_private_flags (bfd *abfd, flagword flags) |
b49e97c9 TS |
16019 | { |
16020 | BFD_ASSERT (!elf_flags_init (abfd) | |
16021 | || elf_elfheader (abfd)->e_flags == flags); | |
16022 | ||
16023 | elf_elfheader (abfd)->e_flags = flags; | |
0a1b45a2 AM |
16024 | elf_flags_init (abfd) = true; |
16025 | return true; | |
b49e97c9 TS |
16026 | } |
16027 | ||
ad9563d6 CM |
16028 | char * |
16029 | _bfd_mips_elf_get_target_dtag (bfd_vma dtag) | |
16030 | { | |
16031 | switch (dtag) | |
16032 | { | |
16033 | default: return ""; | |
16034 | case DT_MIPS_RLD_VERSION: | |
16035 | return "MIPS_RLD_VERSION"; | |
16036 | case DT_MIPS_TIME_STAMP: | |
16037 | return "MIPS_TIME_STAMP"; | |
16038 | case DT_MIPS_ICHECKSUM: | |
16039 | return "MIPS_ICHECKSUM"; | |
16040 | case DT_MIPS_IVERSION: | |
16041 | return "MIPS_IVERSION"; | |
16042 | case DT_MIPS_FLAGS: | |
16043 | return "MIPS_FLAGS"; | |
16044 | case DT_MIPS_BASE_ADDRESS: | |
16045 | return "MIPS_BASE_ADDRESS"; | |
16046 | case DT_MIPS_MSYM: | |
16047 | return "MIPS_MSYM"; | |
16048 | case DT_MIPS_CONFLICT: | |
16049 | return "MIPS_CONFLICT"; | |
16050 | case DT_MIPS_LIBLIST: | |
16051 | return "MIPS_LIBLIST"; | |
16052 | case DT_MIPS_LOCAL_GOTNO: | |
16053 | return "MIPS_LOCAL_GOTNO"; | |
16054 | case DT_MIPS_CONFLICTNO: | |
16055 | return "MIPS_CONFLICTNO"; | |
16056 | case DT_MIPS_LIBLISTNO: | |
16057 | return "MIPS_LIBLISTNO"; | |
16058 | case DT_MIPS_SYMTABNO: | |
16059 | return "MIPS_SYMTABNO"; | |
16060 | case DT_MIPS_UNREFEXTNO: | |
16061 | return "MIPS_UNREFEXTNO"; | |
16062 | case DT_MIPS_GOTSYM: | |
16063 | return "MIPS_GOTSYM"; | |
16064 | case DT_MIPS_HIPAGENO: | |
16065 | return "MIPS_HIPAGENO"; | |
16066 | case DT_MIPS_RLD_MAP: | |
16067 | return "MIPS_RLD_MAP"; | |
a5499fa4 MF |
16068 | case DT_MIPS_RLD_MAP_REL: |
16069 | return "MIPS_RLD_MAP_REL"; | |
ad9563d6 CM |
16070 | case DT_MIPS_DELTA_CLASS: |
16071 | return "MIPS_DELTA_CLASS"; | |
16072 | case DT_MIPS_DELTA_CLASS_NO: | |
16073 | return "MIPS_DELTA_CLASS_NO"; | |
16074 | case DT_MIPS_DELTA_INSTANCE: | |
16075 | return "MIPS_DELTA_INSTANCE"; | |
16076 | case DT_MIPS_DELTA_INSTANCE_NO: | |
16077 | return "MIPS_DELTA_INSTANCE_NO"; | |
16078 | case DT_MIPS_DELTA_RELOC: | |
16079 | return "MIPS_DELTA_RELOC"; | |
16080 | case DT_MIPS_DELTA_RELOC_NO: | |
16081 | return "MIPS_DELTA_RELOC_NO"; | |
16082 | case DT_MIPS_DELTA_SYM: | |
16083 | return "MIPS_DELTA_SYM"; | |
16084 | case DT_MIPS_DELTA_SYM_NO: | |
16085 | return "MIPS_DELTA_SYM_NO"; | |
16086 | case DT_MIPS_DELTA_CLASSSYM: | |
16087 | return "MIPS_DELTA_CLASSSYM"; | |
16088 | case DT_MIPS_DELTA_CLASSSYM_NO: | |
16089 | return "MIPS_DELTA_CLASSSYM_NO"; | |
16090 | case DT_MIPS_CXX_FLAGS: | |
16091 | return "MIPS_CXX_FLAGS"; | |
16092 | case DT_MIPS_PIXIE_INIT: | |
16093 | return "MIPS_PIXIE_INIT"; | |
16094 | case DT_MIPS_SYMBOL_LIB: | |
16095 | return "MIPS_SYMBOL_LIB"; | |
16096 | case DT_MIPS_LOCALPAGE_GOTIDX: | |
16097 | return "MIPS_LOCALPAGE_GOTIDX"; | |
16098 | case DT_MIPS_LOCAL_GOTIDX: | |
16099 | return "MIPS_LOCAL_GOTIDX"; | |
16100 | case DT_MIPS_HIDDEN_GOTIDX: | |
16101 | return "MIPS_HIDDEN_GOTIDX"; | |
16102 | case DT_MIPS_PROTECTED_GOTIDX: | |
16103 | return "MIPS_PROTECTED_GOT_IDX"; | |
16104 | case DT_MIPS_OPTIONS: | |
16105 | return "MIPS_OPTIONS"; | |
16106 | case DT_MIPS_INTERFACE: | |
16107 | return "MIPS_INTERFACE"; | |
16108 | case DT_MIPS_DYNSTR_ALIGN: | |
16109 | return "DT_MIPS_DYNSTR_ALIGN"; | |
16110 | case DT_MIPS_INTERFACE_SIZE: | |
16111 | return "DT_MIPS_INTERFACE_SIZE"; | |
16112 | case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: | |
16113 | return "DT_MIPS_RLD_TEXT_RESOLVE_ADDR"; | |
16114 | case DT_MIPS_PERF_SUFFIX: | |
16115 | return "DT_MIPS_PERF_SUFFIX"; | |
16116 | case DT_MIPS_COMPACT_SIZE: | |
16117 | return "DT_MIPS_COMPACT_SIZE"; | |
16118 | case DT_MIPS_GP_VALUE: | |
16119 | return "DT_MIPS_GP_VALUE"; | |
16120 | case DT_MIPS_AUX_DYNAMIC: | |
16121 | return "DT_MIPS_AUX_DYNAMIC"; | |
861fb55a DJ |
16122 | case DT_MIPS_PLTGOT: |
16123 | return "DT_MIPS_PLTGOT"; | |
16124 | case DT_MIPS_RWPLT: | |
16125 | return "DT_MIPS_RWPLT"; | |
f16a9783 MS |
16126 | case DT_MIPS_XHASH: |
16127 | return "DT_MIPS_XHASH"; | |
ad9563d6 CM |
16128 | } |
16129 | } | |
16130 | ||
757a636f RS |
16131 | /* Return the meaning of Tag_GNU_MIPS_ABI_FP value FP, or null if |
16132 | not known. */ | |
16133 | ||
16134 | const char * | |
16135 | _bfd_mips_fp_abi_string (int fp) | |
16136 | { | |
16137 | switch (fp) | |
16138 | { | |
16139 | /* These strings aren't translated because they're simply | |
16140 | option lists. */ | |
16141 | case Val_GNU_MIPS_ABI_FP_DOUBLE: | |
16142 | return "-mdouble-float"; | |
16143 | ||
16144 | case Val_GNU_MIPS_ABI_FP_SINGLE: | |
16145 | return "-msingle-float"; | |
16146 | ||
16147 | case Val_GNU_MIPS_ABI_FP_SOFT: | |
16148 | return "-msoft-float"; | |
16149 | ||
351cdf24 MF |
16150 | case Val_GNU_MIPS_ABI_FP_OLD_64: |
16151 | return _("-mips32r2 -mfp64 (12 callee-saved)"); | |
16152 | ||
16153 | case Val_GNU_MIPS_ABI_FP_XX: | |
16154 | return "-mfpxx"; | |
16155 | ||
757a636f | 16156 | case Val_GNU_MIPS_ABI_FP_64: |
351cdf24 MF |
16157 | return "-mgp32 -mfp64"; |
16158 | ||
16159 | case Val_GNU_MIPS_ABI_FP_64A: | |
16160 | return "-mgp32 -mfp64 -mno-odd-spreg"; | |
757a636f RS |
16161 | |
16162 | default: | |
16163 | return 0; | |
16164 | } | |
16165 | } | |
16166 | ||
351cdf24 MF |
16167 | static void |
16168 | print_mips_ases (FILE *file, unsigned int mask) | |
16169 | { | |
16170 | if (mask & AFL_ASE_DSP) | |
16171 | fputs ("\n\tDSP ASE", file); | |
16172 | if (mask & AFL_ASE_DSPR2) | |
16173 | fputs ("\n\tDSP R2 ASE", file); | |
8f4f9071 MF |
16174 | if (mask & AFL_ASE_DSPR3) |
16175 | fputs ("\n\tDSP R3 ASE", file); | |
351cdf24 MF |
16176 | if (mask & AFL_ASE_EVA) |
16177 | fputs ("\n\tEnhanced VA Scheme", file); | |
16178 | if (mask & AFL_ASE_MCU) | |
16179 | fputs ("\n\tMCU (MicroController) ASE", file); | |
16180 | if (mask & AFL_ASE_MDMX) | |
16181 | fputs ("\n\tMDMX ASE", file); | |
16182 | if (mask & AFL_ASE_MIPS3D) | |
16183 | fputs ("\n\tMIPS-3D ASE", file); | |
16184 | if (mask & AFL_ASE_MT) | |
16185 | fputs ("\n\tMT ASE", file); | |
16186 | if (mask & AFL_ASE_SMARTMIPS) | |
16187 | fputs ("\n\tSmartMIPS ASE", file); | |
16188 | if (mask & AFL_ASE_VIRT) | |
16189 | fputs ("\n\tVZ ASE", file); | |
16190 | if (mask & AFL_ASE_MSA) | |
16191 | fputs ("\n\tMSA ASE", file); | |
16192 | if (mask & AFL_ASE_MIPS16) | |
16193 | fputs ("\n\tMIPS16 ASE", file); | |
16194 | if (mask & AFL_ASE_MICROMIPS) | |
16195 | fputs ("\n\tMICROMIPS ASE", file); | |
16196 | if (mask & AFL_ASE_XPA) | |
16197 | fputs ("\n\tXPA ASE", file); | |
25499ac7 MR |
16198 | if (mask & AFL_ASE_MIPS16E2) |
16199 | fputs ("\n\tMIPS16e2 ASE", file); | |
730c3174 SE |
16200 | if (mask & AFL_ASE_CRC) |
16201 | fputs ("\n\tCRC ASE", file); | |
6f20c942 FS |
16202 | if (mask & AFL_ASE_GINV) |
16203 | fputs ("\n\tGINV ASE", file); | |
8095d2f7 CX |
16204 | if (mask & AFL_ASE_LOONGSON_MMI) |
16205 | fputs ("\n\tLoongson MMI ASE", file); | |
716c08de CX |
16206 | if (mask & AFL_ASE_LOONGSON_CAM) |
16207 | fputs ("\n\tLoongson CAM ASE", file); | |
bdc6c06e CX |
16208 | if (mask & AFL_ASE_LOONGSON_EXT) |
16209 | fputs ("\n\tLoongson EXT ASE", file); | |
a693765e CX |
16210 | if (mask & AFL_ASE_LOONGSON_EXT2) |
16211 | fputs ("\n\tLoongson EXT2 ASE", file); | |
351cdf24 MF |
16212 | if (mask == 0) |
16213 | fprintf (file, "\n\t%s", _("None")); | |
00ac7aa0 MF |
16214 | else if ((mask & ~AFL_ASE_MASK) != 0) |
16215 | fprintf (stdout, "\n\t%s (%x)", _("Unknown"), mask & ~AFL_ASE_MASK); | |
351cdf24 MF |
16216 | } |
16217 | ||
16218 | static void | |
16219 | print_mips_isa_ext (FILE *file, unsigned int isa_ext) | |
16220 | { | |
16221 | switch (isa_ext) | |
16222 | { | |
16223 | case 0: | |
16224 | fputs (_("None"), file); | |
16225 | break; | |
16226 | case AFL_EXT_XLR: | |
16227 | fputs ("RMI XLR", file); | |
16228 | break; | |
2c629856 N |
16229 | case AFL_EXT_OCTEON3: |
16230 | fputs ("Cavium Networks Octeon3", file); | |
16231 | break; | |
351cdf24 MF |
16232 | case AFL_EXT_OCTEON2: |
16233 | fputs ("Cavium Networks Octeon2", file); | |
16234 | break; | |
16235 | case AFL_EXT_OCTEONP: | |
16236 | fputs ("Cavium Networks OcteonP", file); | |
16237 | break; | |
351cdf24 MF |
16238 | case AFL_EXT_OCTEON: |
16239 | fputs ("Cavium Networks Octeon", file); | |
16240 | break; | |
16241 | case AFL_EXT_5900: | |
16242 | fputs ("Toshiba R5900", file); | |
16243 | break; | |
16244 | case AFL_EXT_4650: | |
16245 | fputs ("MIPS R4650", file); | |
16246 | break; | |
16247 | case AFL_EXT_4010: | |
16248 | fputs ("LSI R4010", file); | |
16249 | break; | |
16250 | case AFL_EXT_4100: | |
16251 | fputs ("NEC VR4100", file); | |
16252 | break; | |
16253 | case AFL_EXT_3900: | |
16254 | fputs ("Toshiba R3900", file); | |
16255 | break; | |
16256 | case AFL_EXT_10000: | |
16257 | fputs ("MIPS R10000", file); | |
16258 | break; | |
16259 | case AFL_EXT_SB1: | |
16260 | fputs ("Broadcom SB-1", file); | |
16261 | break; | |
16262 | case AFL_EXT_4111: | |
16263 | fputs ("NEC VR4111/VR4181", file); | |
16264 | break; | |
16265 | case AFL_EXT_4120: | |
16266 | fputs ("NEC VR4120", file); | |
16267 | break; | |
16268 | case AFL_EXT_5400: | |
16269 | fputs ("NEC VR5400", file); | |
16270 | break; | |
16271 | case AFL_EXT_5500: | |
16272 | fputs ("NEC VR5500", file); | |
16273 | break; | |
16274 | case AFL_EXT_LOONGSON_2E: | |
16275 | fputs ("ST Microelectronics Loongson 2E", file); | |
16276 | break; | |
16277 | case AFL_EXT_LOONGSON_2F: | |
16278 | fputs ("ST Microelectronics Loongson 2F", file); | |
16279 | break; | |
38bf472a MR |
16280 | case AFL_EXT_INTERAPTIV_MR2: |
16281 | fputs ("Imagination interAptiv MR2", file); | |
16282 | break; | |
351cdf24 | 16283 | default: |
00ac7aa0 | 16284 | fprintf (file, "%s (%d)", _("Unknown"), isa_ext); |
351cdf24 MF |
16285 | break; |
16286 | } | |
16287 | } | |
16288 | ||
16289 | static void | |
16290 | print_mips_fp_abi_value (FILE *file, int val) | |
16291 | { | |
16292 | switch (val) | |
16293 | { | |
16294 | case Val_GNU_MIPS_ABI_FP_ANY: | |
16295 | fprintf (file, _("Hard or soft float\n")); | |
16296 | break; | |
16297 | case Val_GNU_MIPS_ABI_FP_DOUBLE: | |
16298 | fprintf (file, _("Hard float (double precision)\n")); | |
16299 | break; | |
16300 | case Val_GNU_MIPS_ABI_FP_SINGLE: | |
16301 | fprintf (file, _("Hard float (single precision)\n")); | |
16302 | break; | |
16303 | case Val_GNU_MIPS_ABI_FP_SOFT: | |
16304 | fprintf (file, _("Soft float\n")); | |
16305 | break; | |
16306 | case Val_GNU_MIPS_ABI_FP_OLD_64: | |
16307 | fprintf (file, _("Hard float (MIPS32r2 64-bit FPU 12 callee-saved)\n")); | |
16308 | break; | |
16309 | case Val_GNU_MIPS_ABI_FP_XX: | |
16310 | fprintf (file, _("Hard float (32-bit CPU, Any FPU)\n")); | |
16311 | break; | |
16312 | case Val_GNU_MIPS_ABI_FP_64: | |
16313 | fprintf (file, _("Hard float (32-bit CPU, 64-bit FPU)\n")); | |
16314 | break; | |
16315 | case Val_GNU_MIPS_ABI_FP_64A: | |
16316 | fprintf (file, _("Hard float compat (32-bit CPU, 64-bit FPU)\n")); | |
16317 | break; | |
16318 | default: | |
16319 | fprintf (file, "??? (%d)\n", val); | |
16320 | break; | |
16321 | } | |
16322 | } | |
16323 | ||
16324 | static int | |
16325 | get_mips_reg_size (int reg_size) | |
16326 | { | |
16327 | return (reg_size == AFL_REG_NONE) ? 0 | |
16328 | : (reg_size == AFL_REG_32) ? 32 | |
16329 | : (reg_size == AFL_REG_64) ? 64 | |
16330 | : (reg_size == AFL_REG_128) ? 128 | |
16331 | : -1; | |
16332 | } | |
16333 | ||
0a1b45a2 | 16334 | bool |
9719ad41 | 16335 | _bfd_mips_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
b49e97c9 | 16336 | { |
9719ad41 | 16337 | FILE *file = ptr; |
b49e97c9 TS |
16338 | |
16339 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
16340 | ||
16341 | /* Print normal ELF private data. */ | |
16342 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
16343 | ||
16344 | /* xgettext:c-format */ | |
16345 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
16346 | ||
16347 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) | |
16348 | fprintf (file, _(" [abi=O32]")); | |
16349 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) | |
16350 | fprintf (file, _(" [abi=O64]")); | |
16351 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) | |
16352 | fprintf (file, _(" [abi=EABI32]")); | |
16353 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) | |
16354 | fprintf (file, _(" [abi=EABI64]")); | |
16355 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) | |
16356 | fprintf (file, _(" [abi unknown]")); | |
16357 | else if (ABI_N32_P (abfd)) | |
16358 | fprintf (file, _(" [abi=N32]")); | |
16359 | else if (ABI_64_P (abfd)) | |
16360 | fprintf (file, _(" [abi=64]")); | |
16361 | else | |
16362 | fprintf (file, _(" [no abi set]")); | |
16363 | ||
16364 | if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) | |
ae0d2616 | 16365 | fprintf (file, " [mips1]"); |
b49e97c9 | 16366 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) |
ae0d2616 | 16367 | fprintf (file, " [mips2]"); |
b49e97c9 | 16368 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) |
ae0d2616 | 16369 | fprintf (file, " [mips3]"); |
b49e97c9 | 16370 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) |
ae0d2616 | 16371 | fprintf (file, " [mips4]"); |
b49e97c9 | 16372 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5) |
ae0d2616 | 16373 | fprintf (file, " [mips5]"); |
b49e97c9 | 16374 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32) |
ae0d2616 | 16375 | fprintf (file, " [mips32]"); |
b49e97c9 | 16376 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64) |
ae0d2616 | 16377 | fprintf (file, " [mips64]"); |
af7ee8bf | 16378 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2) |
ae0d2616 | 16379 | fprintf (file, " [mips32r2]"); |
5f74bc13 | 16380 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R2) |
ae0d2616 | 16381 | fprintf (file, " [mips64r2]"); |
7361da2c AB |
16382 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6) |
16383 | fprintf (file, " [mips32r6]"); | |
16384 | else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R6) | |
16385 | fprintf (file, " [mips64r6]"); | |
b49e97c9 TS |
16386 | else |
16387 | fprintf (file, _(" [unknown ISA]")); | |
16388 | ||
40d32fc6 | 16389 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX) |
ae0d2616 | 16390 | fprintf (file, " [mdmx]"); |
40d32fc6 CD |
16391 | |
16392 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16) | |
ae0d2616 | 16393 | fprintf (file, " [mips16]"); |
40d32fc6 | 16394 | |
df58fc94 RS |
16395 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) |
16396 | fprintf (file, " [micromips]"); | |
16397 | ||
ba92f887 MR |
16398 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NAN2008) |
16399 | fprintf (file, " [nan2008]"); | |
16400 | ||
5baf5e34 | 16401 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_FP64) |
351cdf24 | 16402 | fprintf (file, " [old fp64]"); |
5baf5e34 | 16403 | |
b49e97c9 | 16404 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) |
ae0d2616 | 16405 | fprintf (file, " [32bitmode]"); |
b49e97c9 TS |
16406 | else |
16407 | fprintf (file, _(" [not 32bitmode]")); | |
16408 | ||
c0e3f241 | 16409 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_NOREORDER) |
ae0d2616 | 16410 | fprintf (file, " [noreorder]"); |
c0e3f241 CD |
16411 | |
16412 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) | |
ae0d2616 | 16413 | fprintf (file, " [PIC]"); |
c0e3f241 CD |
16414 | |
16415 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_CPIC) | |
ae0d2616 | 16416 | fprintf (file, " [CPIC]"); |
c0e3f241 CD |
16417 | |
16418 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_XGOT) | |
ae0d2616 | 16419 | fprintf (file, " [XGOT]"); |
c0e3f241 CD |
16420 | |
16421 | if (elf_elfheader (abfd)->e_flags & EF_MIPS_UCODE) | |
ae0d2616 | 16422 | fprintf (file, " [UCODE]"); |
c0e3f241 | 16423 | |
b49e97c9 TS |
16424 | fputc ('\n', file); |
16425 | ||
351cdf24 MF |
16426 | if (mips_elf_tdata (abfd)->abiflags_valid) |
16427 | { | |
16428 | Elf_Internal_ABIFlags_v0 *abiflags = &mips_elf_tdata (abfd)->abiflags; | |
16429 | fprintf (file, "\nMIPS ABI Flags Version: %d\n", abiflags->version); | |
16430 | fprintf (file, "\nISA: MIPS%d", abiflags->isa_level); | |
16431 | if (abiflags->isa_rev > 1) | |
16432 | fprintf (file, "r%d", abiflags->isa_rev); | |
16433 | fprintf (file, "\nGPR size: %d", | |
16434 | get_mips_reg_size (abiflags->gpr_size)); | |
16435 | fprintf (file, "\nCPR1 size: %d", | |
16436 | get_mips_reg_size (abiflags->cpr1_size)); | |
16437 | fprintf (file, "\nCPR2 size: %d", | |
16438 | get_mips_reg_size (abiflags->cpr2_size)); | |
16439 | fputs ("\nFP ABI: ", file); | |
16440 | print_mips_fp_abi_value (file, abiflags->fp_abi); | |
16441 | fputs ("ISA Extension: ", file); | |
16442 | print_mips_isa_ext (file, abiflags->isa_ext); | |
16443 | fputs ("\nASEs:", file); | |
16444 | print_mips_ases (file, abiflags->ases); | |
16445 | fprintf (file, "\nFLAGS 1: %8.8lx", abiflags->flags1); | |
16446 | fprintf (file, "\nFLAGS 2: %8.8lx", abiflags->flags2); | |
16447 | fputc ('\n', file); | |
16448 | } | |
16449 | ||
0a1b45a2 | 16450 | return true; |
b49e97c9 | 16451 | } |
2f89ff8d | 16452 | |
b35d266b | 16453 | const struct bfd_elf_special_section _bfd_mips_elf_special_sections[] = |
2f89ff8d | 16454 | { |
07d6d2b8 AM |
16455 | { STRING_COMMA_LEN (".lit4"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
16456 | { STRING_COMMA_LEN (".lit8"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, | |
0112cd26 | 16457 | { STRING_COMMA_LEN (".mdebug"), 0, SHT_MIPS_DEBUG, 0 }, |
07d6d2b8 | 16458 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
0112cd26 NC |
16459 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, |
16460 | { STRING_COMMA_LEN (".ucode"), 0, SHT_MIPS_UCODE, 0 }, | |
f16a9783 | 16461 | { STRING_COMMA_LEN (".MIPS.xhash"), 0, SHT_MIPS_XHASH, SHF_ALLOC }, |
07d6d2b8 | 16462 | { NULL, 0, 0, 0, 0 } |
2f89ff8d | 16463 | }; |
5e2b0d47 | 16464 | |
8992f0d7 TS |
16465 | /* Merge non visibility st_other attributes. Ensure that the |
16466 | STO_OPTIONAL flag is copied into h->other, even if this is not a | |
16467 | definiton of the symbol. */ | |
5e2b0d47 NC |
16468 | void |
16469 | _bfd_mips_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5160d0f3 | 16470 | unsigned int st_other, |
0a1b45a2 AM |
16471 | bool definition, |
16472 | bool dynamic ATTRIBUTE_UNUSED) | |
5e2b0d47 | 16473 | { |
5160d0f3 | 16474 | if ((st_other & ~ELF_ST_VISIBILITY (-1)) != 0) |
8992f0d7 TS |
16475 | { |
16476 | unsigned char other; | |
16477 | ||
5160d0f3 | 16478 | other = (definition ? st_other : h->other); |
8992f0d7 TS |
16479 | other &= ~ELF_ST_VISIBILITY (-1); |
16480 | h->other = other | ELF_ST_VISIBILITY (h->other); | |
16481 | } | |
16482 | ||
16483 | if (!definition | |
5160d0f3 | 16484 | && ELF_MIPS_IS_OPTIONAL (st_other)) |
5e2b0d47 NC |
16485 | h->other |= STO_OPTIONAL; |
16486 | } | |
12ac1cf5 NC |
16487 | |
16488 | /* Decide whether an undefined symbol is special and can be ignored. | |
16489 | This is the case for OPTIONAL symbols on IRIX. */ | |
0a1b45a2 | 16490 | bool |
12ac1cf5 NC |
16491 | _bfd_mips_elf_ignore_undef_symbol (struct elf_link_hash_entry *h) |
16492 | { | |
63b4cc53 | 16493 | return ELF_MIPS_IS_OPTIONAL (h->other) != 0; |
12ac1cf5 | 16494 | } |
e0764319 | 16495 | |
0a1b45a2 | 16496 | bool |
e0764319 NC |
16497 | _bfd_mips_elf_common_definition (Elf_Internal_Sym *sym) |
16498 | { | |
16499 | return (sym->st_shndx == SHN_COMMON | |
16500 | || sym->st_shndx == SHN_MIPS_ACOMMON | |
16501 | || sym->st_shndx == SHN_MIPS_SCOMMON); | |
16502 | } | |
861fb55a DJ |
16503 | |
16504 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
16505 | or (bfd_vma) -1 if it should not be included. */ | |
16506 | ||
16507 | bfd_vma | |
16508 | _bfd_mips_elf_plt_sym_val (bfd_vma i, const asection *plt, | |
16509 | const arelent *rel ATTRIBUTE_UNUSED) | |
16510 | { | |
16511 | return (plt->vma | |
16512 | + 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry) | |
16513 | + i * 4 * ARRAY_SIZE (mips_exec_plt_entry)); | |
16514 | } | |
16515 | ||
1bbce132 MR |
16516 | /* Build a table of synthetic symbols to represent the PLT. As with MIPS16 |
16517 | and microMIPS PLT slots we may have a many-to-one mapping between .plt | |
16518 | and .got.plt and also the slots may be of a different size each we walk | |
16519 | the PLT manually fetching instructions and matching them against known | |
16520 | patterns. To make things easier standard MIPS slots, if any, always come | |
16521 | first. As we don't create proper ELF symbols we use the UDATA.I member | |
16522 | of ASYMBOL to carry ISA annotation. The encoding used is the same as | |
16523 | with the ST_OTHER member of the ELF symbol. */ | |
16524 | ||
16525 | long | |
16526 | _bfd_mips_elf_get_synthetic_symtab (bfd *abfd, | |
16527 | long symcount ATTRIBUTE_UNUSED, | |
16528 | asymbol **syms ATTRIBUTE_UNUSED, | |
16529 | long dynsymcount, asymbol **dynsyms, | |
16530 | asymbol **ret) | |
16531 | { | |
16532 | static const char pltname[] = "_PROCEDURE_LINKAGE_TABLE_"; | |
16533 | static const char microsuffix[] = "@micromipsplt"; | |
16534 | static const char m16suffix[] = "@mips16plt"; | |
16535 | static const char mipssuffix[] = "@plt"; | |
16536 | ||
0a1b45a2 | 16537 | bool (*slurp_relocs) (bfd *, asection *, asymbol **, bool); |
1bbce132 | 16538 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
0a1b45a2 | 16539 | bool micromips_p = MICROMIPS_P (abfd); |
1bbce132 MR |
16540 | Elf_Internal_Shdr *hdr; |
16541 | bfd_byte *plt_data; | |
16542 | bfd_vma plt_offset; | |
16543 | unsigned int other; | |
16544 | bfd_vma entry_size; | |
16545 | bfd_vma plt0_size; | |
16546 | asection *relplt; | |
16547 | bfd_vma opcode; | |
16548 | asection *plt; | |
16549 | asymbol *send; | |
16550 | size_t size; | |
16551 | char *names; | |
16552 | long counti; | |
16553 | arelent *p; | |
16554 | asymbol *s; | |
16555 | char *nend; | |
16556 | long count; | |
16557 | long pi; | |
16558 | long i; | |
16559 | long n; | |
16560 | ||
16561 | *ret = NULL; | |
16562 | ||
16563 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0 || dynsymcount <= 0) | |
16564 | return 0; | |
16565 | ||
16566 | relplt = bfd_get_section_by_name (abfd, ".rel.plt"); | |
16567 | if (relplt == NULL) | |
16568 | return 0; | |
16569 | ||
16570 | hdr = &elf_section_data (relplt)->this_hdr; | |
16571 | if (hdr->sh_link != elf_dynsymtab (abfd) || hdr->sh_type != SHT_REL) | |
16572 | return 0; | |
16573 | ||
16574 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
16575 | if (plt == NULL) | |
16576 | return 0; | |
16577 | ||
16578 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
0a1b45a2 | 16579 | if (!(*slurp_relocs) (abfd, relplt, dynsyms, true)) |
1bbce132 MR |
16580 | return -1; |
16581 | p = relplt->relocation; | |
16582 | ||
16583 | /* Calculating the exact amount of space required for symbols would | |
16584 | require two passes over the PLT, so just pessimise assuming two | |
16585 | PLT slots per relocation. */ | |
16586 | count = relplt->size / hdr->sh_entsize; | |
16587 | counti = count * bed->s->int_rels_per_ext_rel; | |
16588 | size = 2 * count * sizeof (asymbol); | |
16589 | size += count * (sizeof (mipssuffix) + | |
16590 | (micromips_p ? sizeof (microsuffix) : sizeof (m16suffix))); | |
16591 | for (pi = 0; pi < counti; pi += bed->s->int_rels_per_ext_rel) | |
16592 | size += 2 * strlen ((*p[pi].sym_ptr_ptr)->name); | |
16593 | ||
16594 | /* Add the size of "_PROCEDURE_LINKAGE_TABLE_" too. */ | |
16595 | size += sizeof (asymbol) + sizeof (pltname); | |
16596 | ||
16597 | if (!bfd_malloc_and_get_section (abfd, plt, &plt_data)) | |
16598 | return -1; | |
16599 | ||
16600 | if (plt->size < 16) | |
16601 | return -1; | |
16602 | ||
16603 | s = *ret = bfd_malloc (size); | |
16604 | if (s == NULL) | |
16605 | return -1; | |
16606 | send = s + 2 * count + 1; | |
16607 | ||
16608 | names = (char *) send; | |
16609 | nend = (char *) s + size; | |
16610 | n = 0; | |
16611 | ||
16612 | opcode = bfd_get_micromips_32 (abfd, plt_data + 12); | |
16613 | if (opcode == 0x3302fffe) | |
16614 | { | |
16615 | if (!micromips_p) | |
16616 | return -1; | |
16617 | plt0_size = 2 * ARRAY_SIZE (micromips_o32_exec_plt0_entry); | |
16618 | other = STO_MICROMIPS; | |
16619 | } | |
833794fc MR |
16620 | else if (opcode == 0x0398c1d0) |
16621 | { | |
16622 | if (!micromips_p) | |
16623 | return -1; | |
16624 | plt0_size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry); | |
16625 | other = STO_MICROMIPS; | |
16626 | } | |
1bbce132 MR |
16627 | else |
16628 | { | |
16629 | plt0_size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry); | |
16630 | other = 0; | |
16631 | } | |
16632 | ||
16633 | s->the_bfd = abfd; | |
16634 | s->flags = BSF_SYNTHETIC | BSF_FUNCTION | BSF_LOCAL; | |
16635 | s->section = plt; | |
16636 | s->value = 0; | |
16637 | s->name = names; | |
16638 | s->udata.i = other; | |
16639 | memcpy (names, pltname, sizeof (pltname)); | |
16640 | names += sizeof (pltname); | |
16641 | ++s, ++n; | |
16642 | ||
16643 | pi = 0; | |
16644 | for (plt_offset = plt0_size; | |
16645 | plt_offset + 8 <= plt->size && s < send; | |
16646 | plt_offset += entry_size) | |
16647 | { | |
16648 | bfd_vma gotplt_addr; | |
16649 | const char *suffix; | |
16650 | bfd_vma gotplt_hi; | |
16651 | bfd_vma gotplt_lo; | |
16652 | size_t suffixlen; | |
16653 | ||
16654 | opcode = bfd_get_micromips_32 (abfd, plt_data + plt_offset + 4); | |
16655 | ||
16656 | /* Check if the second word matches the expected MIPS16 instruction. */ | |
16657 | if (opcode == 0x651aeb00) | |
16658 | { | |
16659 | if (micromips_p) | |
16660 | return -1; | |
16661 | /* Truncated table??? */ | |
16662 | if (plt_offset + 16 > plt->size) | |
16663 | break; | |
16664 | gotplt_addr = bfd_get_32 (abfd, plt_data + plt_offset + 12); | |
16665 | entry_size = 2 * ARRAY_SIZE (mips16_o32_exec_plt_entry); | |
16666 | suffixlen = sizeof (m16suffix); | |
16667 | suffix = m16suffix; | |
16668 | other = STO_MIPS16; | |
16669 | } | |
833794fc | 16670 | /* Likewise the expected microMIPS instruction (no insn32 mode). */ |
1bbce132 MR |
16671 | else if (opcode == 0xff220000) |
16672 | { | |
16673 | if (!micromips_p) | |
16674 | return -1; | |
16675 | gotplt_hi = bfd_get_16 (abfd, plt_data + plt_offset) & 0x7f; | |
16676 | gotplt_lo = bfd_get_16 (abfd, plt_data + plt_offset + 2) & 0xffff; | |
16677 | gotplt_hi = ((gotplt_hi ^ 0x40) - 0x40) << 18; | |
16678 | gotplt_lo <<= 2; | |
16679 | gotplt_addr = gotplt_hi + gotplt_lo; | |
16680 | gotplt_addr += ((plt->vma + plt_offset) | 3) ^ 3; | |
16681 | entry_size = 2 * ARRAY_SIZE (micromips_o32_exec_plt_entry); | |
16682 | suffixlen = sizeof (microsuffix); | |
16683 | suffix = microsuffix; | |
16684 | other = STO_MICROMIPS; | |
16685 | } | |
833794fc MR |
16686 | /* Likewise the expected microMIPS instruction (insn32 mode). */ |
16687 | else if ((opcode & 0xffff0000) == 0xff2f0000) | |
16688 | { | |
16689 | gotplt_hi = bfd_get_16 (abfd, plt_data + plt_offset + 2) & 0xffff; | |
16690 | gotplt_lo = bfd_get_16 (abfd, plt_data + plt_offset + 6) & 0xffff; | |
16691 | gotplt_hi = ((gotplt_hi ^ 0x8000) - 0x8000) << 16; | |
16692 | gotplt_lo = (gotplt_lo ^ 0x8000) - 0x8000; | |
16693 | gotplt_addr = gotplt_hi + gotplt_lo; | |
16694 | entry_size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt_entry); | |
16695 | suffixlen = sizeof (microsuffix); | |
16696 | suffix = microsuffix; | |
16697 | other = STO_MICROMIPS; | |
16698 | } | |
1bbce132 MR |
16699 | /* Otherwise assume standard MIPS code. */ |
16700 | else | |
16701 | { | |
16702 | gotplt_hi = bfd_get_32 (abfd, plt_data + plt_offset) & 0xffff; | |
16703 | gotplt_lo = bfd_get_32 (abfd, plt_data + plt_offset + 4) & 0xffff; | |
16704 | gotplt_hi = ((gotplt_hi ^ 0x8000) - 0x8000) << 16; | |
16705 | gotplt_lo = (gotplt_lo ^ 0x8000) - 0x8000; | |
16706 | gotplt_addr = gotplt_hi + gotplt_lo; | |
16707 | entry_size = 4 * ARRAY_SIZE (mips_exec_plt_entry); | |
16708 | suffixlen = sizeof (mipssuffix); | |
16709 | suffix = mipssuffix; | |
16710 | other = 0; | |
16711 | } | |
16712 | /* Truncated table??? */ | |
16713 | if (plt_offset + entry_size > plt->size) | |
16714 | break; | |
16715 | ||
16716 | for (i = 0; | |
16717 | i < count && p[pi].address != gotplt_addr; | |
16718 | i++, pi = (pi + bed->s->int_rels_per_ext_rel) % counti); | |
16719 | ||
16720 | if (i < count) | |
16721 | { | |
16722 | size_t namelen; | |
16723 | size_t len; | |
16724 | ||
16725 | *s = **p[pi].sym_ptr_ptr; | |
16726 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
16727 | we are defining a symbol, ensure one of them is set. */ | |
16728 | if ((s->flags & BSF_LOCAL) == 0) | |
16729 | s->flags |= BSF_GLOBAL; | |
16730 | s->flags |= BSF_SYNTHETIC; | |
16731 | s->section = plt; | |
16732 | s->value = plt_offset; | |
16733 | s->name = names; | |
16734 | s->udata.i = other; | |
16735 | ||
16736 | len = strlen ((*p[pi].sym_ptr_ptr)->name); | |
16737 | namelen = len + suffixlen; | |
16738 | if (names + namelen > nend) | |
16739 | break; | |
16740 | ||
16741 | memcpy (names, (*p[pi].sym_ptr_ptr)->name, len); | |
16742 | names += len; | |
16743 | memcpy (names, suffix, suffixlen); | |
16744 | names += suffixlen; | |
16745 | ||
16746 | ++s, ++n; | |
16747 | pi = (pi + bed->s->int_rels_per_ext_rel) % counti; | |
16748 | } | |
16749 | } | |
16750 | ||
16751 | free (plt_data); | |
16752 | ||
16753 | return n; | |
16754 | } | |
16755 | ||
5e7fc731 MR |
16756 | /* Return the ABI flags associated with ABFD if available. */ |
16757 | ||
16758 | Elf_Internal_ABIFlags_v0 * | |
16759 | bfd_mips_elf_get_abiflags (bfd *abfd) | |
16760 | { | |
16761 | struct mips_elf_obj_tdata *tdata = mips_elf_tdata (abfd); | |
16762 | ||
16763 | return tdata->abiflags_valid ? &tdata->abiflags : NULL; | |
16764 | } | |
16765 | ||
bb29b84d MR |
16766 | /* MIPS libc ABI versions, used with the EI_ABIVERSION ELF file header |
16767 | field. Taken from `libc-abis.h' generated at GNU libc build time. | |
16768 | Using a MIPS_ prefix as other libc targets use different values. */ | |
16769 | enum | |
16770 | { | |
16771 | MIPS_LIBC_ABI_DEFAULT = 0, | |
16772 | MIPS_LIBC_ABI_MIPS_PLT, | |
16773 | MIPS_LIBC_ABI_UNIQUE, | |
16774 | MIPS_LIBC_ABI_MIPS_O32_FP64, | |
47275900 | 16775 | MIPS_LIBC_ABI_ABSOLUTE, |
f16a9783 | 16776 | MIPS_LIBC_ABI_XHASH, |
bb29b84d MR |
16777 | MIPS_LIBC_ABI_MAX |
16778 | }; | |
16779 | ||
0a1b45a2 | 16780 | bool |
ed7e9d0b | 16781 | _bfd_mips_init_file_header (bfd *abfd, struct bfd_link_info *link_info) |
861fb55a | 16782 | { |
47275900 | 16783 | struct mips_elf_link_hash_table *htab = NULL; |
861fb55a DJ |
16784 | Elf_Internal_Ehdr *i_ehdrp; |
16785 | ||
ed7e9d0b | 16786 | if (!_bfd_elf_init_file_header (abfd, link_info)) |
0a1b45a2 | 16787 | return false; |
ed7e9d0b | 16788 | |
861fb55a DJ |
16789 | i_ehdrp = elf_elfheader (abfd); |
16790 | if (link_info) | |
16791 | { | |
16792 | htab = mips_elf_hash_table (link_info); | |
4dfe6ac6 | 16793 | BFD_ASSERT (htab != NULL); |
861fb55a | 16794 | } |
0af03126 | 16795 | |
90c14f0c L |
16796 | if (htab != NULL |
16797 | && htab->use_plts_and_copy_relocs | |
16798 | && htab->root.target_os != is_vxworks) | |
47275900 MR |
16799 | i_ehdrp->e_ident[EI_ABIVERSION] = MIPS_LIBC_ABI_MIPS_PLT; |
16800 | ||
351cdf24 MF |
16801 | if (mips_elf_tdata (abfd)->abiflags.fp_abi == Val_GNU_MIPS_ABI_FP_64 |
16802 | || mips_elf_tdata (abfd)->abiflags.fp_abi == Val_GNU_MIPS_ABI_FP_64A) | |
bb29b84d | 16803 | i_ehdrp->e_ident[EI_ABIVERSION] = MIPS_LIBC_ABI_MIPS_O32_FP64; |
334cd8a7 | 16804 | |
47275900 MR |
16805 | /* Mark that we need support for absolute symbols in the dynamic loader. */ |
16806 | if (htab != NULL && htab->use_absolute_zero && htab->gnu_target) | |
16807 | i_ehdrp->e_ident[EI_ABIVERSION] = MIPS_LIBC_ABI_ABSOLUTE; | |
16808 | ||
f16a9783 MS |
16809 | /* Mark that we need support for .MIPS.xhash in the dynamic linker, |
16810 | if it is the only hash section that will be created. */ | |
16811 | if (link_info && link_info->emit_gnu_hash && !link_info->emit_hash) | |
16812 | i_ehdrp->e_ident[EI_ABIVERSION] = MIPS_LIBC_ABI_XHASH; | |
0a1b45a2 | 16813 | return true; |
861fb55a | 16814 | } |
2f0c68f2 CM |
16815 | |
16816 | int | |
1ced1a5f MR |
16817 | _bfd_mips_elf_compact_eh_encoding |
16818 | (struct bfd_link_info *link_info ATTRIBUTE_UNUSED) | |
2f0c68f2 CM |
16819 | { |
16820 | return DW_EH_PE_pcrel | DW_EH_PE_sdata4; | |
16821 | } | |
16822 | ||
16823 | /* Return the opcode for can't unwind. */ | |
16824 | ||
16825 | int | |
1ced1a5f MR |
16826 | _bfd_mips_elf_cant_unwind_opcode |
16827 | (struct bfd_link_info *link_info ATTRIBUTE_UNUSED) | |
2f0c68f2 CM |
16828 | { |
16829 | return COMPACT_EH_CANT_UNWIND_OPCODE; | |
16830 | } | |
f16a9783 MS |
16831 | |
16832 | /* Record a position XLAT_LOC in the xlat translation table, associated with | |
16833 | the hash entry H. The entry in the translation table will later be | |
16834 | populated with the real symbol dynindx. */ | |
16835 | ||
16836 | void | |
16837 | _bfd_mips_elf_record_xhash_symbol (struct elf_link_hash_entry *h, | |
16838 | bfd_vma xlat_loc) | |
16839 | { | |
16840 | struct mips_elf_link_hash_entry *hmips; | |
16841 | ||
16842 | hmips = (struct mips_elf_link_hash_entry *) h; | |
16843 | hmips->mipsxhash_loc = xlat_loc; | |
16844 | } |