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252b5132 | 1 | /* Alpha specific support for 64-bit ELF |
77cfaee6 | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
7898deda | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by Richard Henderson <rth@tamu.edu>. |
5 | ||
571fe01f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
571fe01f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
571fe01f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
571fe01f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 RH |
21 | |
22 | /* We need a published ABI spec for this. Until one comes out, don't | |
23 | assume this'll remain unchanged forever. */ | |
24 | ||
25 | #include "bfd.h" | |
26 | #include "sysdep.h" | |
27 | #include "libbfd.h" | |
28 | #include "elf-bfd.h" | |
29 | ||
30 | #include "elf/alpha.h" | |
31 | ||
32 | #define ALPHAECOFF | |
33 | ||
34 | #define NO_COFF_RELOCS | |
35 | #define NO_COFF_SYMBOLS | |
36 | #define NO_COFF_LINENOS | |
37 | ||
fe8bc63d | 38 | /* Get the ECOFF swapping routines. Needed for the debug information. */ |
252b5132 RH |
39 | #include "coff/internal.h" |
40 | #include "coff/sym.h" | |
41 | #include "coff/symconst.h" | |
42 | #include "coff/ecoff.h" | |
43 | #include "coff/alpha.h" | |
44 | #include "aout/ar.h" | |
45 | #include "libcoff.h" | |
46 | #include "libecoff.h" | |
47 | #define ECOFF_64 | |
48 | #include "ecoffswap.h" | |
49 | ||
6ec7057a RH |
50 | \f |
51 | /* Instruction data for plt generation and relaxation. */ | |
52 | ||
53 | #define OP_LDA 0x08 | |
54 | #define OP_LDAH 0x09 | |
55 | #define OP_LDQ 0x29 | |
56 | #define OP_BR 0x30 | |
57 | #define OP_BSR 0x34 | |
58 | ||
59 | #define INSN_LDA (OP_LDA << 26) | |
60 | #define INSN_LDAH (OP_LDAH << 26) | |
61 | #define INSN_LDQ (OP_LDQ << 26) | |
62 | #define INSN_BR (OP_BR << 26) | |
63 | ||
64 | #define INSN_ADDQ 0x40000400 | |
65 | #define INSN_RDUNIQ 0x0000009e | |
66 | #define INSN_SUBQ 0x40000520 | |
67 | #define INSN_S4SUBQ 0x40000560 | |
68 | #define INSN_UNOP 0x2ffe0000 | |
69 | ||
70 | #define INSN_JSR 0x68004000 | |
71 | #define INSN_JMP 0x68000000 | |
72 | #define INSN_JSR_MASK 0xfc00c000 | |
73 | ||
74 | #define INSN_A(I,A) (I | (A << 21)) | |
75 | #define INSN_AB(I,A,B) (I | (A << 21) | (B << 16)) | |
76 | #define INSN_ABC(I,A,B,C) (I | (A << 21) | (B << 16) | C) | |
77 | #define INSN_ABO(I,A,B,O) (I | (A << 21) | (B << 16) | ((O) & 0xffff)) | |
78 | #define INSN_AD(I,A,D) (I | (A << 21) | (((D) >> 2) & 0x1fffff)) | |
79 | ||
80 | /* PLT/GOT Stuff */ | |
81 | ||
82 | /* Set by ld emulation. Putting this into the link_info or hash structure | |
83 | is simply working too hard. */ | |
84 | #ifdef USE_SECUREPLT | |
85 | bfd_boolean elf64_alpha_use_secureplt = TRUE; | |
86 | #else | |
87 | bfd_boolean elf64_alpha_use_secureplt = FALSE; | |
88 | #endif | |
89 | ||
90 | #define OLD_PLT_HEADER_SIZE 32 | |
91 | #define OLD_PLT_ENTRY_SIZE 12 | |
92 | #define NEW_PLT_HEADER_SIZE 36 | |
93 | #define NEW_PLT_ENTRY_SIZE 4 | |
94 | ||
95 | #define PLT_HEADER_SIZE \ | |
96 | (elf64_alpha_use_secureplt ? NEW_PLT_HEADER_SIZE : OLD_PLT_HEADER_SIZE) | |
97 | #define PLT_ENTRY_SIZE \ | |
98 | (elf64_alpha_use_secureplt ? NEW_PLT_ENTRY_SIZE : OLD_PLT_ENTRY_SIZE) | |
99 | ||
100 | #define MAX_GOT_SIZE (64*1024) | |
101 | ||
102 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" | |
252b5132 RH |
103 | \f |
104 | struct alpha_elf_link_hash_entry | |
105 | { | |
106 | struct elf_link_hash_entry root; | |
107 | ||
108 | /* External symbol information. */ | |
109 | EXTR esym; | |
110 | ||
111 | /* Cumulative flags for all the .got entries. */ | |
112 | int flags; | |
113 | ||
9e756d64 | 114 | /* Contexts in which a literal was referenced. */ |
3765b1be RH |
115 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
116 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
117 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
118 | #define ALPHA_ELF_LINK_HASH_LU_JSR 0x08 | |
119 | #define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10 | |
120 | #define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20 | |
121 | #define ALPHA_ELF_LINK_HASH_LU_FUNC 0x38 | |
9e756d64 | 122 | #define ALPHA_ELF_LINK_HASH_TLS_IE 0x40 |
cc03ec80 | 123 | |
252b5132 RH |
124 | /* Used to implement multiple .got subsections. */ |
125 | struct alpha_elf_got_entry | |
126 | { | |
127 | struct alpha_elf_got_entry *next; | |
128 | ||
571fe01f | 129 | /* Which .got subsection? */ |
252b5132 RH |
130 | bfd *gotobj; |
131 | ||
571fe01f | 132 | /* The addend in effect for this entry. */ |
dc810e39 | 133 | bfd_vma addend; |
252b5132 | 134 | |
571fe01f | 135 | /* The .got offset for this entry. */ |
252b5132 RH |
136 | int got_offset; |
137 | ||
6ec7057a RH |
138 | /* The .plt offset for this entry. */ |
139 | int plt_offset; | |
140 | ||
3765b1be RH |
141 | /* How many references to this entry? */ |
142 | int use_count; | |
252b5132 | 143 | |
3765b1be RH |
144 | /* The relocation type of this entry. */ |
145 | unsigned char reloc_type; | |
252b5132 | 146 | |
3765b1be RH |
147 | /* How a LITERAL is used. */ |
148 | unsigned char flags; | |
149 | ||
150 | /* Have we initialized the dynamic relocation for this entry? */ | |
151 | unsigned char reloc_done; | |
152 | ||
153 | /* Have we adjusted this entry for SEC_MERGE? */ | |
154 | unsigned char reloc_xlated; | |
252b5132 RH |
155 | } *got_entries; |
156 | ||
571fe01f | 157 | /* Used to count non-got, non-plt relocations for delayed sizing |
252b5132 RH |
158 | of relocation sections. */ |
159 | struct alpha_elf_reloc_entry | |
160 | { | |
161 | struct alpha_elf_reloc_entry *next; | |
162 | ||
571fe01f | 163 | /* Which .reloc section? */ |
252b5132 RH |
164 | asection *srel; |
165 | ||
571fe01f | 166 | /* What kind of relocation? */ |
fcfbdf31 JJ |
167 | unsigned int rtype; |
168 | ||
571fe01f | 169 | /* Is this against read-only section? */ |
fcfbdf31 | 170 | unsigned int reltext : 1; |
252b5132 | 171 | |
571fe01f | 172 | /* How many did we find? */ |
252b5132 RH |
173 | unsigned long count; |
174 | } *reloc_entries; | |
175 | }; | |
176 | ||
177 | /* Alpha ELF linker hash table. */ | |
178 | ||
179 | struct alpha_elf_link_hash_table | |
180 | { | |
181 | struct elf_link_hash_table root; | |
182 | ||
183 | /* The head of a list of .got subsections linked through | |
184 | alpha_elf_tdata(abfd)->got_link_next. */ | |
185 | bfd *got_list; | |
186 | }; | |
187 | ||
188 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
189 | ||
190 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
191 | ((struct alpha_elf_link_hash_entry *) \ | |
192 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
193 | (copy), (follow))) | |
194 | ||
195 | /* Traverse a Alpha ELF linker hash table. */ | |
196 | ||
197 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
198 | (elf_link_hash_traverse \ | |
199 | (&(table)->root, \ | |
a7519a3c | 200 | (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \ |
252b5132 RH |
201 | (info))) |
202 | ||
203 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
204 | ||
205 | #define alpha_elf_hash_table(p) \ | |
206 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) | |
207 | ||
208 | /* Get the object's symbols as our own entry type. */ | |
209 | ||
210 | #define alpha_elf_sym_hashes(abfd) \ | |
211 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
212 | ||
986a241f RH |
213 | /* Should we do dynamic things to this symbol? This differs from the |
214 | generic version in that we never need to consider function pointer | |
215 | equality wrt PLT entries -- we don't create a PLT entry if a symbol's | |
216 | address is ever taken. */ | |
252b5132 | 217 | |
986a241f | 218 | static inline bfd_boolean |
a7519a3c RH |
219 | alpha_elf_dynamic_symbol_p (struct elf_link_hash_entry *h, |
220 | struct bfd_link_info *info) | |
8fb35fed | 221 | { |
986a241f | 222 | return _bfd_elf_dynamic_symbol_p (h, info, 0); |
8fb35fed | 223 | } |
252b5132 RH |
224 | |
225 | /* Create an entry in a Alpha ELF linker hash table. */ | |
226 | ||
227 | static struct bfd_hash_entry * | |
a7519a3c RH |
228 | elf64_alpha_link_hash_newfunc (struct bfd_hash_entry *entry, |
229 | struct bfd_hash_table *table, | |
230 | const char *string) | |
252b5132 RH |
231 | { |
232 | struct alpha_elf_link_hash_entry *ret = | |
233 | (struct alpha_elf_link_hash_entry *) entry; | |
234 | ||
235 | /* Allocate the structure if it has not already been allocated by a | |
236 | subclass. */ | |
237 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
238 | ret = ((struct alpha_elf_link_hash_entry *) | |
239 | bfd_hash_allocate (table, | |
240 | sizeof (struct alpha_elf_link_hash_entry))); | |
241 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
242 | return (struct bfd_hash_entry *) ret; | |
243 | ||
244 | /* Call the allocation method of the superclass. */ | |
245 | ret = ((struct alpha_elf_link_hash_entry *) | |
246 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
247 | table, string)); | |
248 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
249 | { | |
250 | /* Set local fields. */ | |
251 | memset (&ret->esym, 0, sizeof (EXTR)); | |
252 | /* We use -2 as a marker to indicate that the information has | |
253 | not been set. -1 means there is no associated ifd. */ | |
254 | ret->esym.ifd = -2; | |
255 | ret->flags = 0; | |
256 | ret->got_entries = NULL; | |
257 | ret->reloc_entries = NULL; | |
258 | } | |
259 | ||
260 | return (struct bfd_hash_entry *) ret; | |
261 | } | |
262 | ||
263 | /* Create a Alpha ELF linker hash table. */ | |
264 | ||
265 | static struct bfd_link_hash_table * | |
a7519a3c | 266 | elf64_alpha_bfd_link_hash_table_create (bfd *abfd) |
252b5132 RH |
267 | { |
268 | struct alpha_elf_link_hash_table *ret; | |
dc810e39 | 269 | bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table); |
252b5132 | 270 | |
e2d34d7d | 271 | ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
272 | if (ret == (struct alpha_elf_link_hash_table *) NULL) |
273 | return NULL; | |
274 | ||
275 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
276 | elf64_alpha_link_hash_newfunc)) | |
277 | { | |
e2d34d7d | 278 | free (ret); |
252b5132 RH |
279 | return NULL; |
280 | } | |
281 | ||
282 | return &ret->root.root; | |
283 | } | |
284 | \f | |
285 | /* We have some private fields hanging off of the elf_tdata structure. */ | |
286 | ||
287 | struct alpha_elf_obj_tdata | |
288 | { | |
289 | struct elf_obj_tdata root; | |
290 | ||
291 | /* For every input file, these are the got entries for that object's | |
292 | local symbols. */ | |
293 | struct alpha_elf_got_entry ** local_got_entries; | |
294 | ||
295 | /* For every input file, this is the object that owns the got that | |
296 | this input file uses. */ | |
297 | bfd *gotobj; | |
298 | ||
299 | /* For every got, this is a linked list through the objects using this got */ | |
300 | bfd *in_got_link_next; | |
301 | ||
302 | /* For every got, this is a link to the next got subsegment. */ | |
303 | bfd *got_link_next; | |
304 | ||
305 | /* For every got, this is the section. */ | |
306 | asection *got; | |
307 | ||
3765b1be RH |
308 | /* For every got, this is it's total number of words. */ |
309 | int total_got_size; | |
252b5132 | 310 | |
3765b1be | 311 | /* For every got, this is the sum of the number of words required |
252b5132 | 312 | to hold all of the member object's local got. */ |
3765b1be | 313 | int local_got_size; |
252b5132 RH |
314 | }; |
315 | ||
316 | #define alpha_elf_tdata(abfd) \ | |
317 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
318 | ||
b34976b6 | 319 | static bfd_boolean |
a7519a3c | 320 | elf64_alpha_mkobject (bfd *abfd) |
252b5132 | 321 | { |
dc810e39 AM |
322 | bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata); |
323 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
252b5132 | 324 | if (abfd->tdata.any == NULL) |
b34976b6 AM |
325 | return FALSE; |
326 | return TRUE; | |
252b5132 RH |
327 | } |
328 | ||
b34976b6 | 329 | static bfd_boolean |
a7519a3c | 330 | elf64_alpha_object_p (bfd *abfd) |
252b5132 | 331 | { |
252b5132 RH |
332 | /* Set the right machine number for an Alpha ELF file. */ |
333 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
334 | } | |
335 | \f | |
a7519a3c RH |
336 | /* A relocation function which doesn't do anything. */ |
337 | ||
338 | static bfd_reloc_status_type | |
339 | elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
340 | asymbol *sym ATTRIBUTE_UNUSED, | |
341 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
342 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
343 | { | |
344 | if (output_bfd) | |
345 | reloc->address += sec->output_offset; | |
346 | return bfd_reloc_ok; | |
347 | } | |
348 | ||
349 | /* A relocation function used for an unsupported reloc. */ | |
350 | ||
351 | static bfd_reloc_status_type | |
352 | elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
353 | asymbol *sym ATTRIBUTE_UNUSED, | |
354 | PTR data ATTRIBUTE_UNUSED, asection *sec, | |
355 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
356 | { | |
357 | if (output_bfd) | |
358 | reloc->address += sec->output_offset; | |
359 | return bfd_reloc_notsupported; | |
360 | } | |
361 | ||
362 | /* Do the work of the GPDISP relocation. */ | |
363 | ||
364 | static bfd_reloc_status_type | |
365 | elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah, | |
366 | bfd_byte *p_lda) | |
367 | { | |
368 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
369 | bfd_vma addend; | |
370 | unsigned long i_ldah, i_lda; | |
371 | ||
372 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
373 | i_lda = bfd_get_32 (abfd, p_lda); | |
374 | ||
375 | /* Complain if the instructions are not correct. */ | |
376 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
377 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
378 | ret = bfd_reloc_dangerous; | |
379 | ||
380 | /* Extract the user-supplied offset, mirroring the sign extensions | |
381 | that the instructions perform. */ | |
382 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
383 | addend = (addend ^ 0x80008000) - 0x80008000; | |
384 | ||
385 | gpdisp += addend; | |
386 | ||
387 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
388 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
389 | ret = bfd_reloc_overflow; | |
390 | ||
391 | /* compensate for the sign extension again. */ | |
392 | i_ldah = ((i_ldah & 0xffff0000) | |
393 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
394 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
395 | ||
396 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); | |
397 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
398 | ||
399 | return ret; | |
400 | } | |
401 | ||
402 | /* The special function for the GPDISP reloc. */ | |
403 | ||
404 | static bfd_reloc_status_type | |
405 | elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry, | |
406 | asymbol *sym ATTRIBUTE_UNUSED, PTR data, | |
407 | asection *input_section, bfd *output_bfd, | |
408 | char **err_msg) | |
409 | { | |
410 | bfd_reloc_status_type ret; | |
411 | bfd_vma gp, relocation; | |
412 | bfd_vma high_address; | |
413 | bfd_byte *p_ldah, *p_lda; | |
414 | ||
415 | /* Don't do anything if we're not doing a final link. */ | |
416 | if (output_bfd) | |
417 | { | |
418 | reloc_entry->address += input_section->output_offset; | |
419 | return bfd_reloc_ok; | |
420 | } | |
421 | ||
422 | high_address = bfd_get_section_limit (abfd, input_section); | |
423 | if (reloc_entry->address > high_address | |
424 | || reloc_entry->address + reloc_entry->addend > high_address) | |
425 | return bfd_reloc_outofrange; | |
426 | ||
427 | /* The gp used in the portion of the output object to which this | |
428 | input object belongs is cached on the input bfd. */ | |
429 | gp = _bfd_get_gp_value (abfd); | |
430 | ||
431 | relocation = (input_section->output_section->vma | |
432 | + input_section->output_offset | |
433 | + reloc_entry->address); | |
434 | ||
435 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
436 | p_lda = p_ldah + reloc_entry->addend; | |
437 | ||
438 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
439 | ||
440 | /* Complain if the instructions are not correct. */ | |
441 | if (ret == bfd_reloc_dangerous) | |
442 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
443 | ||
444 | return ret; | |
445 | } | |
446 | ||
252b5132 RH |
447 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
448 | from smaller values. Start with zero, widen, *then* decrement. */ | |
449 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
450 | ||
dfe57ca0 RH |
451 | #define SKIP_HOWTO(N) \ |
452 | HOWTO(N, 0, 0, 0, 0, 0, 0, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) | |
453 | ||
252b5132 RH |
454 | static reloc_howto_type elf64_alpha_howto_table[] = |
455 | { | |
456 | HOWTO (R_ALPHA_NONE, /* type */ | |
457 | 0, /* rightshift */ | |
458 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
459 | 8, /* bitsize */ | |
b34976b6 | 460 | TRUE, /* pc_relative */ |
252b5132 RH |
461 | 0, /* bitpos */ |
462 | complain_overflow_dont, /* complain_on_overflow */ | |
463 | elf64_alpha_reloc_nil, /* special_function */ | |
464 | "NONE", /* name */ | |
b34976b6 | 465 | FALSE, /* partial_inplace */ |
252b5132 RH |
466 | 0, /* src_mask */ |
467 | 0, /* dst_mask */ | |
b34976b6 | 468 | TRUE), /* pcrel_offset */ |
252b5132 RH |
469 | |
470 | /* A 32 bit reference to a symbol. */ | |
471 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
472 | 0, /* rightshift */ | |
473 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
474 | 32, /* bitsize */ | |
b34976b6 | 475 | FALSE, /* pc_relative */ |
252b5132 RH |
476 | 0, /* bitpos */ |
477 | complain_overflow_bitfield, /* complain_on_overflow */ | |
478 | 0, /* special_function */ | |
479 | "REFLONG", /* name */ | |
b34976b6 | 480 | FALSE, /* partial_inplace */ |
252b5132 RH |
481 | 0xffffffff, /* src_mask */ |
482 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 483 | FALSE), /* pcrel_offset */ |
252b5132 RH |
484 | |
485 | /* A 64 bit reference to a symbol. */ | |
486 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
487 | 0, /* rightshift */ | |
488 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
489 | 64, /* bitsize */ | |
b34976b6 | 490 | FALSE, /* pc_relative */ |
252b5132 RH |
491 | 0, /* bitpos */ |
492 | complain_overflow_bitfield, /* complain_on_overflow */ | |
493 | 0, /* special_function */ | |
494 | "REFQUAD", /* name */ | |
b34976b6 | 495 | FALSE, /* partial_inplace */ |
252b5132 RH |
496 | MINUS_ONE, /* src_mask */ |
497 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 498 | FALSE), /* pcrel_offset */ |
252b5132 RH |
499 | |
500 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
501 | that when the value is used the value of the gp register will be | |
502 | added in. */ | |
503 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
504 | 0, /* rightshift */ | |
505 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
506 | 32, /* bitsize */ | |
b34976b6 | 507 | FALSE, /* pc_relative */ |
252b5132 RH |
508 | 0, /* bitpos */ |
509 | complain_overflow_bitfield, /* complain_on_overflow */ | |
510 | 0, /* special_function */ | |
511 | "GPREL32", /* name */ | |
b34976b6 | 512 | FALSE, /* partial_inplace */ |
252b5132 RH |
513 | 0xffffffff, /* src_mask */ |
514 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 515 | FALSE), /* pcrel_offset */ |
252b5132 RH |
516 | |
517 | /* Used for an instruction that refers to memory off the GP register. */ | |
518 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
519 | 0, /* rightshift */ | |
dfe57ca0 | 520 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 521 | 16, /* bitsize */ |
b34976b6 | 522 | FALSE, /* pc_relative */ |
252b5132 RH |
523 | 0, /* bitpos */ |
524 | complain_overflow_signed, /* complain_on_overflow */ | |
525 | 0, /* special_function */ | |
526 | "ELF_LITERAL", /* name */ | |
b34976b6 | 527 | FALSE, /* partial_inplace */ |
252b5132 RH |
528 | 0xffff, /* src_mask */ |
529 | 0xffff, /* dst_mask */ | |
b34976b6 | 530 | FALSE), /* pcrel_offset */ |
252b5132 RH |
531 | |
532 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
533 | It identifies a use of the literal. The symbol index is special: | |
534 | 1 means the literal address is in the base register of a memory | |
535 | format instruction; 2 means the literal address is in the byte | |
536 | offset register of a byte-manipulation instruction; 3 means the | |
537 | literal address is in the target register of a jsr instruction. | |
538 | This does not actually do any relocation. */ | |
539 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
540 | 0, /* rightshift */ | |
dfe57ca0 | 541 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 542 | 32, /* bitsize */ |
b34976b6 | 543 | FALSE, /* pc_relative */ |
252b5132 RH |
544 | 0, /* bitpos */ |
545 | complain_overflow_dont, /* complain_on_overflow */ | |
546 | elf64_alpha_reloc_nil, /* special_function */ | |
547 | "LITUSE", /* name */ | |
b34976b6 | 548 | FALSE, /* partial_inplace */ |
252b5132 RH |
549 | 0, /* src_mask */ |
550 | 0, /* dst_mask */ | |
b34976b6 | 551 | FALSE), /* pcrel_offset */ |
252b5132 RH |
552 | |
553 | /* Load the gp register. This is always used for a ldah instruction | |
554 | which loads the upper 16 bits of the gp register. The symbol | |
555 | index of the GPDISP instruction is an offset in bytes to the lda | |
556 | instruction that loads the lower 16 bits. The value to use for | |
557 | the relocation is the difference between the GP value and the | |
558 | current location; the load will always be done against a register | |
559 | holding the current address. | |
560 | ||
561 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
562 | any offset is present in the instructions, it is an offset from | |
563 | the register to the ldah instruction. This lets us avoid any | |
564 | stupid hackery like inventing a gp value to do partial relocation | |
565 | against. Also unlike ECOFF, we do the whole relocation off of | |
566 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
567 | space consuming bit, that, since all the information was present | |
568 | in the GPDISP_HI16 reloc. */ | |
569 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
570 | 16, /* rightshift */ | |
571 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
572 | 16, /* bitsize */ | |
b34976b6 | 573 | FALSE, /* pc_relative */ |
252b5132 RH |
574 | 0, /* bitpos */ |
575 | complain_overflow_dont, /* complain_on_overflow */ | |
576 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
577 | "GPDISP", /* name */ | |
b34976b6 | 578 | FALSE, /* partial_inplace */ |
252b5132 RH |
579 | 0xffff, /* src_mask */ |
580 | 0xffff, /* dst_mask */ | |
b34976b6 | 581 | TRUE), /* pcrel_offset */ |
252b5132 RH |
582 | |
583 | /* A 21 bit branch. */ | |
584 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
585 | 2, /* rightshift */ | |
586 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
587 | 21, /* bitsize */ | |
b34976b6 | 588 | TRUE, /* pc_relative */ |
252b5132 RH |
589 | 0, /* bitpos */ |
590 | complain_overflow_signed, /* complain_on_overflow */ | |
591 | 0, /* special_function */ | |
592 | "BRADDR", /* name */ | |
b34976b6 | 593 | FALSE, /* partial_inplace */ |
252b5132 RH |
594 | 0x1fffff, /* src_mask */ |
595 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 596 | TRUE), /* pcrel_offset */ |
252b5132 RH |
597 | |
598 | /* A hint for a jump to a register. */ | |
599 | HOWTO (R_ALPHA_HINT, /* type */ | |
600 | 2, /* rightshift */ | |
dfe57ca0 | 601 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 602 | 14, /* bitsize */ |
b34976b6 | 603 | TRUE, /* pc_relative */ |
252b5132 RH |
604 | 0, /* bitpos */ |
605 | complain_overflow_dont, /* complain_on_overflow */ | |
606 | 0, /* special_function */ | |
607 | "HINT", /* name */ | |
b34976b6 | 608 | FALSE, /* partial_inplace */ |
252b5132 RH |
609 | 0x3fff, /* src_mask */ |
610 | 0x3fff, /* dst_mask */ | |
b34976b6 | 611 | TRUE), /* pcrel_offset */ |
252b5132 RH |
612 | |
613 | /* 16 bit PC relative offset. */ | |
614 | HOWTO (R_ALPHA_SREL16, /* type */ | |
615 | 0, /* rightshift */ | |
616 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
617 | 16, /* bitsize */ | |
b34976b6 | 618 | TRUE, /* pc_relative */ |
252b5132 RH |
619 | 0, /* bitpos */ |
620 | complain_overflow_signed, /* complain_on_overflow */ | |
621 | 0, /* special_function */ | |
622 | "SREL16", /* name */ | |
b34976b6 | 623 | FALSE, /* partial_inplace */ |
252b5132 RH |
624 | 0xffff, /* src_mask */ |
625 | 0xffff, /* dst_mask */ | |
b34976b6 | 626 | TRUE), /* pcrel_offset */ |
252b5132 RH |
627 | |
628 | /* 32 bit PC relative offset. */ | |
629 | HOWTO (R_ALPHA_SREL32, /* type */ | |
630 | 0, /* rightshift */ | |
631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
632 | 32, /* bitsize */ | |
b34976b6 | 633 | TRUE, /* pc_relative */ |
252b5132 RH |
634 | 0, /* bitpos */ |
635 | complain_overflow_signed, /* complain_on_overflow */ | |
636 | 0, /* special_function */ | |
637 | "SREL32", /* name */ | |
b34976b6 | 638 | FALSE, /* partial_inplace */ |
252b5132 RH |
639 | 0xffffffff, /* src_mask */ |
640 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 641 | TRUE), /* pcrel_offset */ |
252b5132 RH |
642 | |
643 | /* A 64 bit PC relative offset. */ | |
644 | HOWTO (R_ALPHA_SREL64, /* type */ | |
645 | 0, /* rightshift */ | |
646 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
647 | 64, /* bitsize */ | |
b34976b6 | 648 | TRUE, /* pc_relative */ |
252b5132 RH |
649 | 0, /* bitpos */ |
650 | complain_overflow_signed, /* complain_on_overflow */ | |
651 | 0, /* special_function */ | |
652 | "SREL64", /* name */ | |
b34976b6 | 653 | FALSE, /* partial_inplace */ |
252b5132 RH |
654 | MINUS_ONE, /* src_mask */ |
655 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 656 | TRUE), /* pcrel_offset */ |
252b5132 | 657 | |
dfe57ca0 RH |
658 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
659 | SKIP_HOWTO (12), | |
660 | SKIP_HOWTO (13), | |
661 | SKIP_HOWTO (14), | |
662 | SKIP_HOWTO (15), | |
663 | SKIP_HOWTO (16), | |
252b5132 RH |
664 | |
665 | /* The high 16 bits of the displacement from GP to the target. */ | |
666 | HOWTO (R_ALPHA_GPRELHIGH, | |
667 | 0, /* rightshift */ | |
dfe57ca0 | 668 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 669 | 16, /* bitsize */ |
b34976b6 | 670 | FALSE, /* pc_relative */ |
252b5132 RH |
671 | 0, /* bitpos */ |
672 | complain_overflow_signed, /* complain_on_overflow */ | |
dfe57ca0 | 673 | 0, /* special_function */ |
252b5132 | 674 | "GPRELHIGH", /* name */ |
b34976b6 | 675 | FALSE, /* partial_inplace */ |
252b5132 RH |
676 | 0xffff, /* src_mask */ |
677 | 0xffff, /* dst_mask */ | |
b34976b6 | 678 | FALSE), /* pcrel_offset */ |
252b5132 RH |
679 | |
680 | /* The low 16 bits of the displacement from GP to the target. */ | |
681 | HOWTO (R_ALPHA_GPRELLOW, | |
682 | 0, /* rightshift */ | |
dfe57ca0 | 683 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 684 | 16, /* bitsize */ |
b34976b6 | 685 | FALSE, /* pc_relative */ |
252b5132 RH |
686 | 0, /* bitpos */ |
687 | complain_overflow_dont, /* complain_on_overflow */ | |
dfe57ca0 | 688 | 0, /* special_function */ |
252b5132 | 689 | "GPRELLOW", /* name */ |
b34976b6 | 690 | FALSE, /* partial_inplace */ |
252b5132 RH |
691 | 0xffff, /* src_mask */ |
692 | 0xffff, /* dst_mask */ | |
b34976b6 | 693 | FALSE), /* pcrel_offset */ |
252b5132 RH |
694 | |
695 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 696 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 697 | 0, /* rightshift */ |
dfe57ca0 | 698 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 699 | 16, /* bitsize */ |
b34976b6 | 700 | FALSE, /* pc_relative */ |
252b5132 RH |
701 | 0, /* bitpos */ |
702 | complain_overflow_signed, /* complain_on_overflow */ | |
703 | 0, /* special_function */ | |
dfe57ca0 | 704 | "GPREL16", /* name */ |
b34976b6 | 705 | FALSE, /* partial_inplace */ |
252b5132 RH |
706 | 0xffff, /* src_mask */ |
707 | 0xffff, /* dst_mask */ | |
b34976b6 | 708 | FALSE), /* pcrel_offset */ |
252b5132 | 709 | |
dfe57ca0 RH |
710 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
711 | SKIP_HOWTO (20), | |
712 | SKIP_HOWTO (21), | |
713 | SKIP_HOWTO (22), | |
714 | SKIP_HOWTO (23), | |
252b5132 | 715 | |
fe8bc63d | 716 | /* Misc ELF relocations. */ |
252b5132 RH |
717 | |
718 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
719 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
720 | is present because every other ELF has one, but should not be used | |
721 | because .dynbss is an ugly thing. */ | |
722 | HOWTO (R_ALPHA_COPY, | |
723 | 0, | |
724 | 0, | |
725 | 0, | |
b34976b6 | 726 | FALSE, |
252b5132 RH |
727 | 0, |
728 | complain_overflow_dont, | |
729 | bfd_elf_generic_reloc, | |
730 | "COPY", | |
b34976b6 | 731 | FALSE, |
252b5132 RH |
732 | 0, |
733 | 0, | |
b34976b6 | 734 | TRUE), |
252b5132 RH |
735 | |
736 | /* A dynamic relocation for a .got entry. */ | |
737 | HOWTO (R_ALPHA_GLOB_DAT, | |
738 | 0, | |
739 | 0, | |
740 | 0, | |
b34976b6 | 741 | FALSE, |
252b5132 RH |
742 | 0, |
743 | complain_overflow_dont, | |
744 | bfd_elf_generic_reloc, | |
745 | "GLOB_DAT", | |
b34976b6 | 746 | FALSE, |
252b5132 RH |
747 | 0, |
748 | 0, | |
b34976b6 | 749 | TRUE), |
252b5132 RH |
750 | |
751 | /* A dynamic relocation for a .plt entry. */ | |
752 | HOWTO (R_ALPHA_JMP_SLOT, | |
753 | 0, | |
754 | 0, | |
755 | 0, | |
b34976b6 | 756 | FALSE, |
252b5132 RH |
757 | 0, |
758 | complain_overflow_dont, | |
759 | bfd_elf_generic_reloc, | |
760 | "JMP_SLOT", | |
b34976b6 | 761 | FALSE, |
252b5132 RH |
762 | 0, |
763 | 0, | |
b34976b6 | 764 | TRUE), |
252b5132 RH |
765 | |
766 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
767 | HOWTO (R_ALPHA_RELATIVE, | |
768 | 0, | |
769 | 0, | |
770 | 0, | |
b34976b6 | 771 | FALSE, |
252b5132 RH |
772 | 0, |
773 | complain_overflow_dont, | |
774 | bfd_elf_generic_reloc, | |
775 | "RELATIVE", | |
b34976b6 | 776 | FALSE, |
252b5132 RH |
777 | 0, |
778 | 0, | |
b34976b6 | 779 | TRUE), |
7793f4d0 RH |
780 | |
781 | /* A 21 bit branch that adjusts for gp loads. */ | |
782 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
783 | 2, /* rightshift */ | |
784 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
785 | 21, /* bitsize */ | |
b34976b6 | 786 | TRUE, /* pc_relative */ |
7793f4d0 RH |
787 | 0, /* bitpos */ |
788 | complain_overflow_signed, /* complain_on_overflow */ | |
789 | 0, /* special_function */ | |
790 | "BRSGP", /* name */ | |
b34976b6 | 791 | FALSE, /* partial_inplace */ |
7793f4d0 RH |
792 | 0x1fffff, /* src_mask */ |
793 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 794 | TRUE), /* pcrel_offset */ |
3765b1be RH |
795 | |
796 | /* Creates a tls_index for the symbol in the got. */ | |
797 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
798 | 0, /* rightshift */ | |
799 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
800 | 16, /* bitsize */ | |
b34976b6 | 801 | FALSE, /* pc_relative */ |
3765b1be RH |
802 | 0, /* bitpos */ |
803 | complain_overflow_signed, /* complain_on_overflow */ | |
804 | 0, /* special_function */ | |
805 | "TLSGD", /* name */ | |
b34976b6 | 806 | FALSE, /* partial_inplace */ |
3765b1be RH |
807 | 0xffff, /* src_mask */ |
808 | 0xffff, /* dst_mask */ | |
b34976b6 | 809 | FALSE), /* pcrel_offset */ |
3765b1be RH |
810 | |
811 | /* Creates a tls_index for the (current) module in the got. */ | |
812 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
813 | 0, /* rightshift */ | |
814 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
815 | 16, /* bitsize */ | |
b34976b6 | 816 | FALSE, /* pc_relative */ |
3765b1be RH |
817 | 0, /* bitpos */ |
818 | complain_overflow_signed, /* complain_on_overflow */ | |
819 | 0, /* special_function */ | |
820 | "TLSLDM", /* name */ | |
b34976b6 | 821 | FALSE, /* partial_inplace */ |
3765b1be RH |
822 | 0xffff, /* src_mask */ |
823 | 0xffff, /* dst_mask */ | |
b34976b6 | 824 | FALSE), /* pcrel_offset */ |
3765b1be RH |
825 | |
826 | /* A dynamic relocation for a DTP module entry. */ | |
827 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
828 | 0, /* rightshift */ | |
829 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
830 | 64, /* bitsize */ | |
b34976b6 | 831 | FALSE, /* pc_relative */ |
3765b1be RH |
832 | 0, /* bitpos */ |
833 | complain_overflow_bitfield, /* complain_on_overflow */ | |
834 | 0, /* special_function */ | |
835 | "DTPMOD64", /* name */ | |
b34976b6 | 836 | FALSE, /* partial_inplace */ |
3765b1be RH |
837 | MINUS_ONE, /* src_mask */ |
838 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 839 | FALSE), /* pcrel_offset */ |
3765b1be RH |
840 | |
841 | /* Creates a 64-bit offset in the got for the displacement | |
842 | from DTP to the target. */ | |
843 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
844 | 0, /* rightshift */ | |
845 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
846 | 16, /* bitsize */ | |
b34976b6 | 847 | FALSE, /* pc_relative */ |
3765b1be RH |
848 | 0, /* bitpos */ |
849 | complain_overflow_signed, /* complain_on_overflow */ | |
850 | 0, /* special_function */ | |
851 | "GOTDTPREL", /* name */ | |
b34976b6 | 852 | FALSE, /* partial_inplace */ |
3765b1be RH |
853 | 0xffff, /* src_mask */ |
854 | 0xffff, /* dst_mask */ | |
b34976b6 | 855 | FALSE), /* pcrel_offset */ |
3765b1be RH |
856 | |
857 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
858 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
859 | 0, /* rightshift */ | |
860 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
861 | 64, /* bitsize */ | |
b34976b6 | 862 | FALSE, /* pc_relative */ |
3765b1be RH |
863 | 0, /* bitpos */ |
864 | complain_overflow_bitfield, /* complain_on_overflow */ | |
865 | 0, /* special_function */ | |
866 | "DTPREL64", /* name */ | |
b34976b6 | 867 | FALSE, /* partial_inplace */ |
3765b1be RH |
868 | MINUS_ONE, /* src_mask */ |
869 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 870 | FALSE), /* pcrel_offset */ |
3765b1be RH |
871 | |
872 | /* The high 16 bits of the displacement from DTP to the target. */ | |
873 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
874 | 0, /* rightshift */ | |
875 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
876 | 16, /* bitsize */ | |
b34976b6 | 877 | FALSE, /* pc_relative */ |
3765b1be RH |
878 | 0, /* bitpos */ |
879 | complain_overflow_signed, /* complain_on_overflow */ | |
880 | 0, /* special_function */ | |
881 | "DTPRELHI", /* name */ | |
b34976b6 | 882 | FALSE, /* partial_inplace */ |
3765b1be RH |
883 | 0xffff, /* src_mask */ |
884 | 0xffff, /* dst_mask */ | |
b34976b6 | 885 | FALSE), /* pcrel_offset */ |
3765b1be RH |
886 | |
887 | /* The low 16 bits of the displacement from DTP to the target. */ | |
888 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
889 | 0, /* rightshift */ | |
890 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
891 | 16, /* bitsize */ | |
b34976b6 | 892 | FALSE, /* pc_relative */ |
3765b1be RH |
893 | 0, /* bitpos */ |
894 | complain_overflow_dont, /* complain_on_overflow */ | |
895 | 0, /* special_function */ | |
896 | "DTPRELLO", /* name */ | |
b34976b6 | 897 | FALSE, /* partial_inplace */ |
3765b1be RH |
898 | 0xffff, /* src_mask */ |
899 | 0xffff, /* dst_mask */ | |
b34976b6 | 900 | FALSE), /* pcrel_offset */ |
3765b1be RH |
901 | |
902 | /* A 16-bit displacement from DTP to the target. */ | |
903 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
904 | 0, /* rightshift */ | |
905 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
906 | 16, /* bitsize */ | |
b34976b6 | 907 | FALSE, /* pc_relative */ |
3765b1be RH |
908 | 0, /* bitpos */ |
909 | complain_overflow_signed, /* complain_on_overflow */ | |
910 | 0, /* special_function */ | |
911 | "DTPREL16", /* name */ | |
b34976b6 | 912 | FALSE, /* partial_inplace */ |
3765b1be RH |
913 | 0xffff, /* src_mask */ |
914 | 0xffff, /* dst_mask */ | |
b34976b6 | 915 | FALSE), /* pcrel_offset */ |
3765b1be RH |
916 | |
917 | /* Creates a 64-bit offset in the got for the displacement | |
918 | from TP to the target. */ | |
919 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
920 | 0, /* rightshift */ | |
921 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
922 | 16, /* bitsize */ | |
b34976b6 | 923 | FALSE, /* pc_relative */ |
3765b1be RH |
924 | 0, /* bitpos */ |
925 | complain_overflow_signed, /* complain_on_overflow */ | |
926 | 0, /* special_function */ | |
927 | "GOTTPREL", /* name */ | |
b34976b6 | 928 | FALSE, /* partial_inplace */ |
3765b1be RH |
929 | 0xffff, /* src_mask */ |
930 | 0xffff, /* dst_mask */ | |
b34976b6 | 931 | FALSE), /* pcrel_offset */ |
3765b1be RH |
932 | |
933 | /* A dynamic relocation for a displacement from TP to the target. */ | |
934 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
935 | 0, /* rightshift */ | |
936 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
937 | 64, /* bitsize */ | |
b34976b6 | 938 | FALSE, /* pc_relative */ |
3765b1be RH |
939 | 0, /* bitpos */ |
940 | complain_overflow_bitfield, /* complain_on_overflow */ | |
941 | 0, /* special_function */ | |
942 | "TPREL64", /* name */ | |
b34976b6 | 943 | FALSE, /* partial_inplace */ |
3765b1be RH |
944 | MINUS_ONE, /* src_mask */ |
945 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 946 | FALSE), /* pcrel_offset */ |
3765b1be RH |
947 | |
948 | /* The high 16 bits of the displacement from TP to the target. */ | |
949 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
950 | 0, /* rightshift */ | |
951 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
952 | 16, /* bitsize */ | |
b34976b6 | 953 | FALSE, /* pc_relative */ |
3765b1be RH |
954 | 0, /* bitpos */ |
955 | complain_overflow_signed, /* complain_on_overflow */ | |
956 | 0, /* special_function */ | |
957 | "TPRELHI", /* name */ | |
b34976b6 | 958 | FALSE, /* partial_inplace */ |
3765b1be RH |
959 | 0xffff, /* src_mask */ |
960 | 0xffff, /* dst_mask */ | |
b34976b6 | 961 | FALSE), /* pcrel_offset */ |
3765b1be RH |
962 | |
963 | /* The low 16 bits of the displacement from TP to the target. */ | |
964 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
965 | 0, /* rightshift */ | |
966 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
967 | 16, /* bitsize */ | |
b34976b6 | 968 | FALSE, /* pc_relative */ |
3765b1be RH |
969 | 0, /* bitpos */ |
970 | complain_overflow_dont, /* complain_on_overflow */ | |
971 | 0, /* special_function */ | |
972 | "TPRELLO", /* name */ | |
b34976b6 | 973 | FALSE, /* partial_inplace */ |
3765b1be RH |
974 | 0xffff, /* src_mask */ |
975 | 0xffff, /* dst_mask */ | |
b34976b6 | 976 | FALSE), /* pcrel_offset */ |
3765b1be RH |
977 | |
978 | /* A 16-bit displacement from TP to the target. */ | |
979 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
980 | 0, /* rightshift */ | |
981 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
982 | 16, /* bitsize */ | |
b34976b6 | 983 | FALSE, /* pc_relative */ |
3765b1be RH |
984 | 0, /* bitpos */ |
985 | complain_overflow_signed, /* complain_on_overflow */ | |
986 | 0, /* special_function */ | |
987 | "TPREL16", /* name */ | |
b34976b6 | 988 | FALSE, /* partial_inplace */ |
3765b1be RH |
989 | 0xffff, /* src_mask */ |
990 | 0xffff, /* dst_mask */ | |
b34976b6 | 991 | FALSE), /* pcrel_offset */ |
252b5132 RH |
992 | }; |
993 | ||
252b5132 RH |
994 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
995 | ||
996 | struct elf_reloc_map | |
997 | { | |
998 | bfd_reloc_code_real_type bfd_reloc_val; | |
999 | int elf_reloc_val; | |
1000 | }; | |
1001 | ||
1002 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
1003 | { | |
dfe57ca0 RH |
1004 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
1005 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
1006 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
1007 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
1008 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
1009 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
1010 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
1011 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
1012 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
1013 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
1014 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
1015 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
1016 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
1017 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
1018 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
1019 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 1020 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
1021 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
1022 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
1023 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
1024 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
1025 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
1026 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
1027 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
1028 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
1029 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
1030 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
1031 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
1032 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
1033 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
1034 | }; |
1035 | ||
1036 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
1037 | ||
1038 | static reloc_howto_type * | |
a7519a3c RH |
1039 | elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1040 | bfd_reloc_code_real_type code) | |
252b5132 RH |
1041 | { |
1042 | const struct elf_reloc_map *i, *e; | |
1043 | i = e = elf64_alpha_reloc_map; | |
1044 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
1045 | for (; i != e; ++i) | |
1046 | { | |
1047 | if (i->bfd_reloc_val == code) | |
1048 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
1049 | } | |
1050 | return 0; | |
1051 | } | |
1052 | ||
1053 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ | |
1054 | ||
1055 | static void | |
a7519a3c RH |
1056 | elf64_alpha_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
1057 | Elf_Internal_Rela *dst) | |
252b5132 | 1058 | { |
a7519a3c | 1059 | unsigned r_type = ELF64_R_TYPE(dst->r_info); |
252b5132 RH |
1060 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); |
1061 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
1062 | } | |
3765b1be RH |
1063 | |
1064 | /* These two relocations create a two-word entry in the got. */ | |
1065 | #define alpha_got_entry_size(r_type) \ | |
1066 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1067 | |
1068 | /* This is PT_TLS segment p_vaddr. */ | |
e1918d23 AM |
1069 | #define alpha_get_dtprel_base(info) \ |
1070 | (elf_hash_table (info)->tls_sec->vma) | |
9e756d64 RH |
1071 | |
1072 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1073 | is assigned offset round(16, PT_TLS p_align). */ | |
e1918d23 AM |
1074 | #define alpha_get_tprel_base(info) \ |
1075 | (elf_hash_table (info)->tls_sec->vma \ | |
1076 | - align_power ((bfd_vma) 16, \ | |
1077 | elf_hash_table (info)->tls_sec->alignment_power)) | |
252b5132 | 1078 | \f |
a7519a3c RH |
1079 | /* Handle an Alpha specific section when reading an object file. This |
1080 | is called when bfd_section_from_shdr finds a section with an unknown | |
1081 | type. | |
1082 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure | |
1083 | how to. */ | |
252b5132 | 1084 | |
a7519a3c RH |
1085 | static bfd_boolean |
1086 | elf64_alpha_section_from_shdr (bfd *abfd, | |
1087 | Elf_Internal_Shdr *hdr, | |
1088 | const char *name, | |
1089 | int shindex) | |
252b5132 | 1090 | { |
a7519a3c RH |
1091 | asection *newsect; |
1092 | ||
1093 | /* There ought to be a place to keep ELF backend specific flags, but | |
1094 | at the moment there isn't one. We just keep track of the | |
1095 | sections by their name, instead. Fortunately, the ABI gives | |
1096 | suggested names for all the MIPS specific sections, so we will | |
1097 | probably get away with this. */ | |
1098 | switch (hdr->sh_type) | |
1099 | { | |
1100 | case SHT_ALPHA_DEBUG: | |
1101 | if (strcmp (name, ".mdebug") != 0) | |
1102 | return FALSE; | |
1103 | break; | |
1104 | default: | |
1105 | return FALSE; | |
1106 | } | |
252b5132 | 1107 | |
a7519a3c RH |
1108 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
1109 | return FALSE; | |
1110 | newsect = hdr->bfd_section; | |
252b5132 | 1111 | |
a7519a3c | 1112 | if (hdr->sh_type == SHT_ALPHA_DEBUG) |
252b5132 | 1113 | { |
a7519a3c RH |
1114 | if (! bfd_set_section_flags (abfd, newsect, |
1115 | (bfd_get_section_flags (abfd, newsect) | |
1116 | | SEC_DEBUGGING))) | |
1117 | return FALSE; | |
252b5132 | 1118 | } |
a7519a3c RH |
1119 | |
1120 | return TRUE; | |
252b5132 RH |
1121 | } |
1122 | ||
a7519a3c RH |
1123 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
1124 | ||
b34976b6 | 1125 | static bfd_boolean |
a7519a3c | 1126 | elf64_alpha_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
252b5132 | 1127 | { |
a7519a3c RH |
1128 | if (hdr->sh_flags & SHF_ALPHA_GPREL) |
1129 | *flags |= SEC_SMALL_DATA; | |
252b5132 | 1130 | |
a7519a3c RH |
1131 | return TRUE; |
1132 | } | |
252b5132 | 1133 | |
a7519a3c RH |
1134 | /* Set the correct type for an Alpha ELF section. We do this by the |
1135 | section name, which is a hack, but ought to work. */ | |
9e756d64 | 1136 | |
a7519a3c RH |
1137 | static bfd_boolean |
1138 | elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) | |
1139 | { | |
1140 | register const char *name; | |
1141 | ||
1142 | name = bfd_get_section_name (abfd, sec); | |
1143 | ||
1144 | if (strcmp (name, ".mdebug") == 0) | |
252b5132 | 1145 | { |
a7519a3c RH |
1146 | hdr->sh_type = SHT_ALPHA_DEBUG; |
1147 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
1148 | entsize of 0. FIXME: Does this matter? */ | |
1149 | if ((abfd->flags & DYNAMIC) != 0 ) | |
1150 | hdr->sh_entsize = 0; | |
1151 | else | |
1152 | hdr->sh_entsize = 1; | |
252b5132 | 1153 | } |
a7519a3c RH |
1154 | else if ((sec->flags & SEC_SMALL_DATA) |
1155 | || strcmp (name, ".sdata") == 0 | |
1156 | || strcmp (name, ".sbss") == 0 | |
1157 | || strcmp (name, ".lit4") == 0 | |
1158 | || strcmp (name, ".lit8") == 0) | |
1159 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
252b5132 | 1160 | |
a7519a3c RH |
1161 | return TRUE; |
1162 | } | |
252b5132 | 1163 | |
a7519a3c RH |
1164 | /* Hook called by the linker routine which adds symbols from an object |
1165 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1166 | ||
1167 | static bfd_boolean | |
1168 | elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
1169 | Elf_Internal_Sym *sym, | |
1170 | const char **namep ATTRIBUTE_UNUSED, | |
1171 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1172 | asection **secp, bfd_vma *valp) | |
1173 | { | |
1174 | if (sym->st_shndx == SHN_COMMON | |
1175 | && !info->relocatable | |
1176 | && sym->st_size <= elf_gp_size (abfd)) | |
252b5132 | 1177 | { |
a7519a3c RH |
1178 | /* Common symbols less than or equal to -G nn bytes are |
1179 | automatically put into .sbss. */ | |
ffcb7aff | 1180 | |
a7519a3c | 1181 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
252b5132 | 1182 | |
a7519a3c | 1183 | if (scomm == NULL) |
252b5132 | 1184 | { |
a7519a3c RH |
1185 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
1186 | (SEC_ALLOC | |
1187 | | SEC_IS_COMMON | |
1188 | | SEC_LINKER_CREATED)); | |
1189 | if (scomm == NULL) | |
1190 | return FALSE; | |
1191 | } | |
ffcb7aff | 1192 | |
a7519a3c RH |
1193 | *secp = scomm; |
1194 | *valp = sym->st_size; | |
1195 | } | |
ffcb7aff | 1196 | |
a7519a3c RH |
1197 | return TRUE; |
1198 | } | |
252b5132 | 1199 | |
a7519a3c | 1200 | /* Create the .got section. */ |
252b5132 | 1201 | |
a7519a3c RH |
1202 | static bfd_boolean |
1203 | elf64_alpha_create_got_section (bfd *abfd, | |
1204 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1205 | { | |
1206 | asection *s; | |
252b5132 | 1207 | |
a7519a3c RH |
1208 | if ((s = bfd_get_section_by_name (abfd, ".got"))) |
1209 | { | |
1210 | /* Check for a non-linker created .got? */ | |
1211 | if (alpha_elf_tdata (abfd)->got == NULL) | |
1212 | alpha_elf_tdata (abfd)->got = s; | |
1213 | return TRUE; | |
1214 | } | |
252b5132 | 1215 | |
a7519a3c RH |
1216 | s = bfd_make_section_with_flags (abfd, ".got", (SEC_ALLOC | SEC_LOAD |
1217 | | SEC_HAS_CONTENTS | |
1218 | | SEC_IN_MEMORY | |
1219 | | SEC_LINKER_CREATED)); | |
1220 | if (s == NULL | |
1221 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1222 | return FALSE; | |
252b5132 | 1223 | |
a7519a3c | 1224 | alpha_elf_tdata (abfd)->got = s; |
252b5132 | 1225 | |
a7519a3c RH |
1226 | return TRUE; |
1227 | } | |
252b5132 | 1228 | |
a7519a3c | 1229 | /* Create all the dynamic sections. */ |
252b5132 | 1230 | |
a7519a3c RH |
1231 | static bfd_boolean |
1232 | elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
1233 | { | |
1234 | asection *s; | |
1235 | struct elf_link_hash_entry *h; | |
1236 | struct bfd_link_hash_entry *bh; | |
252b5132 | 1237 | |
a7519a3c | 1238 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ |
252b5132 | 1239 | |
a7519a3c | 1240 | s = bfd_make_section_with_flags (abfd, ".plt", |
6ec7057a | 1241 | (SEC_ALLOC | SEC_LOAD | SEC_CODE |
a7519a3c RH |
1242 | | SEC_HAS_CONTENTS |
1243 | | SEC_IN_MEMORY | |
1244 | | SEC_LINKER_CREATED | |
6ec7057a RH |
1245 | | (elf64_alpha_use_secureplt |
1246 | ? SEC_READONLY : 0))); | |
1247 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 4)) | |
a7519a3c | 1248 | return FALSE; |
252b5132 | 1249 | |
a7519a3c RH |
1250 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
1251 | .plt section. */ | |
1252 | bh = NULL; | |
1253 | if (! (_bfd_generic_link_add_one_symbol | |
1254 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
1255 | (bfd_vma) 0, (const char *) NULL, FALSE, | |
1256 | get_elf_backend_data (abfd)->collect, &bh))) | |
1257 | return FALSE; | |
1258 | h = (struct elf_link_hash_entry *) bh; | |
1259 | h->def_regular = 1; | |
1260 | h->type = STT_OBJECT; | |
d6ad34f6 | 1261 | |
6ec7057a | 1262 | if (info->shared && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
a7519a3c | 1263 | return FALSE; |
d6ad34f6 | 1264 | |
a7519a3c RH |
1265 | s = bfd_make_section_with_flags (abfd, ".rela.plt", |
1266 | (SEC_ALLOC | SEC_LOAD | |
1267 | | SEC_HAS_CONTENTS | |
1268 | | SEC_IN_MEMORY | |
1269 | | SEC_LINKER_CREATED | |
1270 | | SEC_READONLY)); | |
6ec7057a | 1271 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) |
a7519a3c | 1272 | return FALSE; |
252b5132 | 1273 | |
6ec7057a RH |
1274 | if (elf64_alpha_use_secureplt) |
1275 | { | |
1276 | s = bfd_make_section_with_flags (abfd, ".got.plt", | |
1277 | SEC_ALLOC | SEC_LINKER_CREATED); | |
1278 | if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) | |
1279 | return FALSE; | |
1280 | } | |
1281 | ||
a7519a3c RH |
1282 | /* We may or may not have created a .got section for this object, but |
1283 | we definitely havn't done the rest of the work. */ | |
1cd6895c | 1284 | |
a7519a3c RH |
1285 | if (!elf64_alpha_create_got_section (abfd, info)) |
1286 | return FALSE; | |
1cd6895c | 1287 | |
a7519a3c RH |
1288 | s = bfd_make_section_with_flags (abfd, ".rela.got", |
1289 | (SEC_ALLOC | SEC_LOAD | |
1290 | | SEC_HAS_CONTENTS | |
1291 | | SEC_IN_MEMORY | |
1292 | | SEC_LINKER_CREATED | |
1293 | | SEC_READONLY)); | |
1294 | if (s == NULL | |
1295 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1296 | return FALSE; | |
252b5132 | 1297 | |
a7519a3c RH |
1298 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
1299 | dynobj's .got section. We don't do this in the linker script | |
1300 | because we don't want to define the symbol if we are not creating | |
1301 | a global offset table. */ | |
1302 | bh = NULL; | |
1303 | if (!(_bfd_generic_link_add_one_symbol | |
1304 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, | |
1305 | alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, | |
1306 | FALSE, get_elf_backend_data (abfd)->collect, &bh))) | |
1307 | return FALSE; | |
1308 | h = (struct elf_link_hash_entry *) bh; | |
1309 | h->def_regular = 1; | |
1310 | h->type = STT_OBJECT; | |
252b5132 | 1311 | |
a7519a3c RH |
1312 | if (info->shared |
1313 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1314 | return FALSE; | |
252b5132 | 1315 | |
a7519a3c | 1316 | elf_hash_table (info)->hgot = h; |
252b5132 | 1317 | |
a7519a3c | 1318 | return TRUE; |
252b5132 | 1319 | } |
a7519a3c RH |
1320 | \f |
1321 | /* Read ECOFF debugging information from a .mdebug section into a | |
1322 | ecoff_debug_info structure. */ | |
252b5132 | 1323 | |
a7519a3c RH |
1324 | static bfd_boolean |
1325 | elf64_alpha_read_ecoff_info (bfd *abfd, asection *section, | |
1326 | struct ecoff_debug_info *debug) | |
252b5132 | 1327 | { |
a7519a3c RH |
1328 | HDRR *symhdr; |
1329 | const struct ecoff_debug_swap *swap; | |
1330 | char *ext_hdr = NULL; | |
252b5132 | 1331 | |
a7519a3c RH |
1332 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
1333 | memset (debug, 0, sizeof (*debug)); | |
252b5132 | 1334 | |
a7519a3c RH |
1335 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
1336 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1337 | goto error_return; | |
252b5132 | 1338 | |
a7519a3c RH |
1339 | if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
1340 | swap->external_hdr_size)) | |
1341 | goto error_return; | |
252b5132 | 1342 | |
a7519a3c RH |
1343 | symhdr = &debug->symbolic_header; |
1344 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
252b5132 | 1345 | |
a7519a3c RH |
1346 | /* The symbolic header contains absolute file offsets and sizes to |
1347 | read. */ | |
1348 | #define READ(ptr, offset, count, size, type) \ | |
1349 | if (symhdr->count == 0) \ | |
1350 | debug->ptr = NULL; \ | |
1351 | else \ | |
1352 | { \ | |
1353 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ | |
1354 | debug->ptr = (type) bfd_malloc (amt); \ | |
1355 | if (debug->ptr == NULL) \ | |
1356 | goto error_return; \ | |
1357 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
1358 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ | |
1359 | goto error_return; \ | |
1360 | } | |
fe8bc63d | 1361 | |
a7519a3c RH |
1362 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); |
1363 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
1364 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
1365 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
1366 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
1367 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
1368 | union aux_ext *); | |
1369 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1370 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
1371 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
1372 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
1373 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
1374 | #undef READ | |
252b5132 | 1375 | |
a7519a3c | 1376 | debug->fdr = NULL; |
252b5132 | 1377 | |
a7519a3c | 1378 | return TRUE; |
252b5132 | 1379 | |
a7519a3c RH |
1380 | error_return: |
1381 | if (ext_hdr != NULL) | |
1382 | free (ext_hdr); | |
1383 | if (debug->line != NULL) | |
1384 | free (debug->line); | |
1385 | if (debug->external_dnr != NULL) | |
1386 | free (debug->external_dnr); | |
1387 | if (debug->external_pdr != NULL) | |
1388 | free (debug->external_pdr); | |
1389 | if (debug->external_sym != NULL) | |
1390 | free (debug->external_sym); | |
1391 | if (debug->external_opt != NULL) | |
1392 | free (debug->external_opt); | |
1393 | if (debug->external_aux != NULL) | |
1394 | free (debug->external_aux); | |
1395 | if (debug->ss != NULL) | |
1396 | free (debug->ss); | |
1397 | if (debug->ssext != NULL) | |
1398 | free (debug->ssext); | |
1399 | if (debug->external_fdr != NULL) | |
1400 | free (debug->external_fdr); | |
1401 | if (debug->external_rfd != NULL) | |
1402 | free (debug->external_rfd); | |
1403 | if (debug->external_ext != NULL) | |
1404 | free (debug->external_ext); | |
1405 | return FALSE; | |
252b5132 RH |
1406 | } |
1407 | ||
a7519a3c RH |
1408 | /* Alpha ELF local labels start with '$'. */ |
1409 | ||
b34976b6 | 1410 | static bfd_boolean |
a7519a3c | 1411 | elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
252b5132 | 1412 | { |
a7519a3c RH |
1413 | return name[0] == '$'; |
1414 | } | |
9e756d64 | 1415 | |
a7519a3c RH |
1416 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line |
1417 | routine in order to handle the ECOFF debugging information. We | |
1418 | still call this mips_elf_find_line because of the slot | |
1419 | find_line_info in elf_obj_tdata is declared that way. */ | |
d6ad34f6 | 1420 | |
a7519a3c RH |
1421 | struct mips_elf_find_line |
1422 | { | |
1423 | struct ecoff_debug_info d; | |
1424 | struct ecoff_find_line i; | |
1425 | }; | |
d6ad34f6 | 1426 | |
a7519a3c RH |
1427 | static bfd_boolean |
1428 | elf64_alpha_find_nearest_line (bfd *abfd, asection *section, asymbol **symbols, | |
1429 | bfd_vma offset, const char **filename_ptr, | |
1430 | const char **functionname_ptr, | |
1431 | unsigned int *line_ptr) | |
1432 | { | |
1433 | asection *msec; | |
252b5132 | 1434 | |
a7519a3c RH |
1435 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
1436 | filename_ptr, functionname_ptr, | |
1437 | line_ptr, 0, | |
1438 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
b34976b6 | 1439 | return TRUE; |
9e756d64 | 1440 | |
a7519a3c RH |
1441 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
1442 | if (msec != NULL) | |
1bbc9cec | 1443 | { |
a7519a3c RH |
1444 | flagword origflags; |
1445 | struct mips_elf_find_line *fi; | |
1446 | const struct ecoff_debug_swap * const swap = | |
1447 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
252b5132 | 1448 | |
a7519a3c RH |
1449 | /* If we are called during a link, alpha_elf_final_link may have |
1450 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
1451 | if appropriate (which it normally will be). */ | |
1452 | origflags = msec->flags; | |
1453 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
1454 | msec->flags |= SEC_HAS_CONTENTS; | |
9e756d64 | 1455 | |
a7519a3c RH |
1456 | fi = elf_tdata (abfd)->find_line_info; |
1457 | if (fi == NULL) | |
1458 | { | |
1459 | bfd_size_type external_fdr_size; | |
1460 | char *fraw_src; | |
1461 | char *fraw_end; | |
1462 | struct fdr *fdr_ptr; | |
1463 | bfd_size_type amt = sizeof (struct mips_elf_find_line); | |
9e756d64 | 1464 | |
a7519a3c RH |
1465 | fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt); |
1466 | if (fi == NULL) | |
1467 | { | |
1468 | msec->flags = origflags; | |
1469 | return FALSE; | |
1470 | } | |
9e756d64 | 1471 | |
a7519a3c RH |
1472 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) |
1473 | { | |
1474 | msec->flags = origflags; | |
1475 | return FALSE; | |
1476 | } | |
9e756d64 | 1477 | |
a7519a3c RH |
1478 | /* Swap in the FDR information. */ |
1479 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
1480 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
1481 | if (fi->d.fdr == NULL) | |
1482 | { | |
1483 | msec->flags = origflags; | |
1484 | return FALSE; | |
1485 | } | |
1486 | external_fdr_size = swap->external_fdr_size; | |
1487 | fdr_ptr = fi->d.fdr; | |
1488 | fraw_src = (char *) fi->d.external_fdr; | |
1489 | fraw_end = (fraw_src | |
1490 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
1491 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
1492 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
9e756d64 | 1493 | |
a7519a3c | 1494 | elf_tdata (abfd)->find_line_info = fi; |
9e756d64 | 1495 | |
a7519a3c RH |
1496 | /* Note that we don't bother to ever free this information. |
1497 | find_nearest_line is either called all the time, as in | |
1498 | objdump -l, so the information should be saved, or it is | |
1499 | rarely called, as in ld error messages, so the memory | |
1500 | wasted is unimportant. Still, it would probably be a | |
1501 | good idea for free_cached_info to throw it away. */ | |
1502 | } | |
9e756d64 | 1503 | |
a7519a3c RH |
1504 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, |
1505 | &fi->i, filename_ptr, functionname_ptr, | |
1506 | line_ptr)) | |
1507 | { | |
1508 | msec->flags = origflags; | |
1509 | return TRUE; | |
1510 | } | |
9e756d64 | 1511 | |
a7519a3c | 1512 | msec->flags = origflags; |
9e756d64 | 1513 | } |
9e756d64 | 1514 | |
a7519a3c | 1515 | /* Fall back on the generic ELF find_nearest_line routine. */ |
9e756d64 | 1516 | |
a7519a3c RH |
1517 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, |
1518 | filename_ptr, functionname_ptr, | |
1519 | line_ptr); | |
9e756d64 | 1520 | } |
a7519a3c RH |
1521 | \f |
1522 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
9e756d64 | 1523 | |
a7519a3c | 1524 | struct extsym_info |
9e756d64 | 1525 | { |
a7519a3c RH |
1526 | bfd *abfd; |
1527 | struct bfd_link_info *info; | |
1528 | struct ecoff_debug_info *debug; | |
1529 | const struct ecoff_debug_swap *swap; | |
1530 | bfd_boolean failed; | |
1531 | }; | |
9e756d64 | 1532 | |
a7519a3c RH |
1533 | static bfd_boolean |
1534 | elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, PTR data) | |
1535 | { | |
1536 | struct extsym_info *einfo = (struct extsym_info *) data; | |
1537 | bfd_boolean strip; | |
1538 | asection *sec, *output_section; | |
9e756d64 | 1539 | |
a7519a3c RH |
1540 | if (h->root.root.type == bfd_link_hash_warning) |
1541 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
9e756d64 | 1542 | |
a7519a3c RH |
1543 | if (h->root.indx == -2) |
1544 | strip = FALSE; | |
1545 | else if ((h->root.def_dynamic | |
1546 | || h->root.ref_dynamic | |
1547 | || h->root.root.type == bfd_link_hash_new) | |
1548 | && !h->root.def_regular | |
1549 | && !h->root.ref_regular) | |
1550 | strip = TRUE; | |
1551 | else if (einfo->info->strip == strip_all | |
1552 | || (einfo->info->strip == strip_some | |
1553 | && bfd_hash_lookup (einfo->info->keep_hash, | |
1554 | h->root.root.root.string, | |
1555 | FALSE, FALSE) == NULL)) | |
1556 | strip = TRUE; | |
1557 | else | |
1558 | strip = FALSE; | |
9e756d64 | 1559 | |
a7519a3c | 1560 | if (strip) |
b34976b6 | 1561 | return TRUE; |
9e756d64 | 1562 | |
a7519a3c | 1563 | if (h->esym.ifd == -2) |
9e756d64 | 1564 | { |
a7519a3c RH |
1565 | h->esym.jmptbl = 0; |
1566 | h->esym.cobol_main = 0; | |
1567 | h->esym.weakext = 0; | |
1568 | h->esym.reserved = 0; | |
1569 | h->esym.ifd = ifdNil; | |
1570 | h->esym.asym.value = 0; | |
1571 | h->esym.asym.st = stGlobal; | |
9e756d64 | 1572 | |
a7519a3c RH |
1573 | if (h->root.root.type != bfd_link_hash_defined |
1574 | && h->root.root.type != bfd_link_hash_defweak) | |
1575 | h->esym.asym.sc = scAbs; | |
1576 | else | |
1577 | { | |
1578 | const char *name; | |
9e756d64 | 1579 | |
a7519a3c RH |
1580 | sec = h->root.root.u.def.section; |
1581 | output_section = sec->output_section; | |
9e756d64 | 1582 | |
a7519a3c RH |
1583 | /* When making a shared library and symbol h is the one from |
1584 | the another shared library, OUTPUT_SECTION may be null. */ | |
1585 | if (output_section == NULL) | |
1586 | h->esym.asym.sc = scUndefined; | |
1587 | else | |
1588 | { | |
1589 | name = bfd_section_name (output_section->owner, output_section); | |
9e756d64 | 1590 | |
a7519a3c RH |
1591 | if (strcmp (name, ".text") == 0) |
1592 | h->esym.asym.sc = scText; | |
1593 | else if (strcmp (name, ".data") == 0) | |
1594 | h->esym.asym.sc = scData; | |
1595 | else if (strcmp (name, ".sdata") == 0) | |
1596 | h->esym.asym.sc = scSData; | |
1597 | else if (strcmp (name, ".rodata") == 0 | |
1598 | || strcmp (name, ".rdata") == 0) | |
1599 | h->esym.asym.sc = scRData; | |
1600 | else if (strcmp (name, ".bss") == 0) | |
1601 | h->esym.asym.sc = scBss; | |
1602 | else if (strcmp (name, ".sbss") == 0) | |
1603 | h->esym.asym.sc = scSBss; | |
1604 | else if (strcmp (name, ".init") == 0) | |
1605 | h->esym.asym.sc = scInit; | |
1606 | else if (strcmp (name, ".fini") == 0) | |
1607 | h->esym.asym.sc = scFini; | |
1608 | else | |
1609 | h->esym.asym.sc = scAbs; | |
1610 | } | |
1611 | } | |
9e756d64 | 1612 | |
a7519a3c RH |
1613 | h->esym.asym.reserved = 0; |
1614 | h->esym.asym.index = indexNil; | |
1615 | } | |
9e756d64 | 1616 | |
a7519a3c RH |
1617 | if (h->root.root.type == bfd_link_hash_common) |
1618 | h->esym.asym.value = h->root.root.u.c.size; | |
1619 | else if (h->root.root.type == bfd_link_hash_defined | |
1620 | || h->root.root.type == bfd_link_hash_defweak) | |
1621 | { | |
1622 | if (h->esym.asym.sc == scCommon) | |
1623 | h->esym.asym.sc = scBss; | |
1624 | else if (h->esym.asym.sc == scSCommon) | |
1625 | h->esym.asym.sc = scSBss; | |
9e756d64 | 1626 | |
a7519a3c RH |
1627 | sec = h->root.root.u.def.section; |
1628 | output_section = sec->output_section; | |
1629 | if (output_section != NULL) | |
1630 | h->esym.asym.value = (h->root.root.u.def.value | |
1631 | + sec->output_offset | |
1632 | + output_section->vma); | |
1633 | else | |
1634 | h->esym.asym.value = 0; | |
1635 | } | |
9e756d64 | 1636 | |
a7519a3c RH |
1637 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
1638 | h->root.root.root.string, | |
1639 | &h->esym)) | |
1640 | { | |
1641 | einfo->failed = TRUE; | |
1642 | return FALSE; | |
9e756d64 RH |
1643 | } |
1644 | ||
a7519a3c RH |
1645 | return TRUE; |
1646 | } | |
1647 | \f | |
1648 | /* Search for and possibly create a got entry. */ | |
9e756d64 | 1649 | |
a7519a3c RH |
1650 | static struct alpha_elf_got_entry * |
1651 | get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h, | |
1652 | unsigned long r_type, unsigned long r_symndx, | |
1653 | bfd_vma r_addend) | |
1654 | { | |
1655 | struct alpha_elf_got_entry *gotent; | |
1656 | struct alpha_elf_got_entry **slot; | |
9e756d64 | 1657 | |
a7519a3c RH |
1658 | if (h) |
1659 | slot = &h->got_entries; | |
1660 | else | |
1661 | { | |
1662 | /* This is a local .got entry -- record for merge. */ | |
9e756d64 | 1663 | |
a7519a3c | 1664 | struct alpha_elf_got_entry **local_got_entries; |
9e756d64 | 1665 | |
a7519a3c RH |
1666 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
1667 | if (!local_got_entries) | |
1668 | { | |
1669 | bfd_size_type size; | |
1670 | Elf_Internal_Shdr *symtab_hdr; | |
9e756d64 | 1671 | |
a7519a3c RH |
1672 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; |
1673 | size = symtab_hdr->sh_info; | |
1674 | size *= sizeof (struct alpha_elf_got_entry *); | |
9e756d64 | 1675 | |
a7519a3c RH |
1676 | local_got_entries |
1677 | = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); | |
1678 | if (!local_got_entries) | |
1679 | return NULL; | |
1680 | ||
1681 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; | |
1682 | } | |
1683 | ||
1684 | slot = &local_got_entries[r_symndx]; | |
9e756d64 RH |
1685 | } |
1686 | ||
a7519a3c RH |
1687 | for (gotent = *slot; gotent ; gotent = gotent->next) |
1688 | if (gotent->gotobj == abfd | |
1689 | && gotent->reloc_type == r_type | |
1690 | && gotent->addend == r_addend) | |
1691 | break; | |
1692 | ||
1693 | if (!gotent) | |
9e756d64 | 1694 | { |
a7519a3c RH |
1695 | int entry_size; |
1696 | bfd_size_type amt; | |
9e756d64 | 1697 | |
a7519a3c RH |
1698 | amt = sizeof (struct alpha_elf_got_entry); |
1699 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
1700 | if (!gotent) | |
1701 | return NULL; | |
9e756d64 | 1702 | |
a7519a3c RH |
1703 | gotent->gotobj = abfd; |
1704 | gotent->addend = r_addend; | |
1705 | gotent->got_offset = -1; | |
6ec7057a | 1706 | gotent->plt_offset = -1; |
a7519a3c RH |
1707 | gotent->use_count = 1; |
1708 | gotent->reloc_type = r_type; | |
1709 | gotent->reloc_done = 0; | |
1710 | gotent->reloc_xlated = 0; | |
9e756d64 | 1711 | |
a7519a3c RH |
1712 | gotent->next = *slot; |
1713 | *slot = gotent; | |
9e756d64 | 1714 | |
a7519a3c RH |
1715 | entry_size = alpha_got_entry_size (r_type); |
1716 | alpha_elf_tdata (abfd)->total_got_size += entry_size; | |
1717 | if (!h) | |
1718 | alpha_elf_tdata(abfd)->local_got_size += entry_size; | |
9e756d64 | 1719 | } |
a7519a3c RH |
1720 | else |
1721 | gotent->use_count += 1; | |
9e756d64 | 1722 | |
a7519a3c | 1723 | return gotent; |
9e756d64 RH |
1724 | } |
1725 | ||
6ec7057a RH |
1726 | static bfd_boolean |
1727 | elf64_alpha_want_plt (struct alpha_elf_link_hash_entry *ah) | |
1728 | { | |
1729 | return ((ah->root.type == STT_FUNC | |
1730 | || ah->root.root.type == bfd_link_hash_undefweak | |
1731 | || ah->root.root.type == bfd_link_hash_undefined) | |
1732 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_FUNC) != 0 | |
1733 | && (ah->flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC) == 0); | |
1734 | } | |
1735 | ||
a7519a3c RH |
1736 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
1737 | ||
b34976b6 | 1738 | static bfd_boolean |
a7519a3c RH |
1739 | elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1740 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 1741 | { |
a7519a3c RH |
1742 | bfd *dynobj; |
1743 | asection *sreloc; | |
1744 | const char *rel_sec_name; | |
252b5132 | 1745 | Elf_Internal_Shdr *symtab_hdr; |
a7519a3c RH |
1746 | struct alpha_elf_link_hash_entry **sym_hashes; |
1747 | const Elf_Internal_Rela *rel, *relend; | |
1748 | bfd_boolean got_created; | |
1749 | bfd_size_type amt; | |
252b5132 | 1750 | |
a7519a3c RH |
1751 | if (info->relocatable) |
1752 | return TRUE; | |
252b5132 | 1753 | |
a7519a3c RH |
1754 | /* Don't do anything special with non-loaded, non-alloced sections. |
1755 | In particular, any relocs in such sections should not affect GOT | |
1756 | and PLT reference counting (ie. we don't allow them to create GOT | |
1757 | or PLT entries), there's no possibility or desire to optimize TLS | |
1758 | relocs, and there's not much point in propagating relocs to shared | |
1759 | libs that the dynamic linker won't relocate. */ | |
1760 | if ((sec->flags & SEC_ALLOC) == 0) | |
b34976b6 | 1761 | return TRUE; |
252b5132 | 1762 | |
a7519a3c RH |
1763 | dynobj = elf_hash_table(info)->dynobj; |
1764 | if (dynobj == NULL) | |
1765 | elf_hash_table(info)->dynobj = dynobj = abfd; | |
252b5132 | 1766 | |
a7519a3c RH |
1767 | sreloc = NULL; |
1768 | rel_sec_name = NULL; | |
1769 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
1770 | sym_hashes = alpha_elf_sym_hashes(abfd); | |
1771 | got_created = FALSE; | |
1772 | ||
1773 | relend = relocs + sec->reloc_count; | |
1774 | for (rel = relocs; rel < relend; ++rel) | |
1775 | { | |
1776 | enum { | |
1777 | NEED_GOT = 1, | |
1778 | NEED_GOT_ENTRY = 2, | |
1779 | NEED_DYNREL = 4 | |
1780 | }; | |
1781 | ||
1782 | unsigned long r_symndx, r_type; | |
1783 | struct alpha_elf_link_hash_entry *h; | |
1784 | unsigned int gotent_flags; | |
1785 | bfd_boolean maybe_dynamic; | |
1786 | unsigned int need; | |
1787 | bfd_vma addend; | |
1788 | ||
1789 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1790 | if (r_symndx < symtab_hdr->sh_info) | |
1791 | h = NULL; | |
1792 | else | |
1793 | { | |
1794 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
252b5132 | 1795 | |
a7519a3c RH |
1796 | while (h->root.root.type == bfd_link_hash_indirect |
1797 | || h->root.root.type == bfd_link_hash_warning) | |
1798 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 1799 | |
a7519a3c RH |
1800 | h->root.ref_regular = 1; |
1801 | } | |
252b5132 | 1802 | |
a7519a3c RH |
1803 | /* We can only get preliminary data on whether a symbol is |
1804 | locally or externally defined, as not all of the input files | |
1805 | have yet been processed. Do something with what we know, as | |
1806 | this may help reduce memory usage and processing time later. */ | |
1807 | maybe_dynamic = FALSE; | |
1808 | if (h && ((info->shared | |
1809 | && (!info->symbolic | |
1810 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
1811 | || !h->root.def_regular | |
1812 | || h->root.root.type == bfd_link_hash_defweak)) | |
1813 | maybe_dynamic = TRUE; | |
252b5132 | 1814 | |
a7519a3c RH |
1815 | need = 0; |
1816 | gotent_flags = 0; | |
1817 | r_type = ELF64_R_TYPE (rel->r_info); | |
1818 | addend = rel->r_addend; | |
9e756d64 | 1819 | |
9e756d64 RH |
1820 | switch (r_type) |
1821 | { | |
1822 | case R_ALPHA_LITERAL: | |
a7519a3c RH |
1823 | need = NEED_GOT | NEED_GOT_ENTRY; |
1824 | ||
1825 | /* Remember how this literal is used from its LITUSEs. | |
1826 | This will be important when it comes to decide if we can | |
1827 | create a .plt entry for a function symbol. */ | |
1828 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
1829 | if (rel->r_addend >= 1 && rel->r_addend <= 5) | |
1830 | gotent_flags |= 1 << rel->r_addend; | |
1831 | --rel; | |
1832 | ||
1833 | /* No LITUSEs -- presumably the address is used somehow. */ | |
1834 | if (gotent_flags == 0) | |
1835 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
1836 | break; | |
1837 | ||
1838 | case R_ALPHA_GPDISP: | |
1839 | case R_ALPHA_GPREL16: | |
1840 | case R_ALPHA_GPREL32: | |
9e756d64 RH |
1841 | case R_ALPHA_GPRELHIGH: |
1842 | case R_ALPHA_GPRELLOW: | |
a7519a3c RH |
1843 | case R_ALPHA_BRSGP: |
1844 | need = NEED_GOT; | |
1845 | break; | |
1846 | ||
1847 | case R_ALPHA_REFLONG: | |
1848 | case R_ALPHA_REFQUAD: | |
1849 | if (info->shared || maybe_dynamic) | |
1850 | need = NEED_DYNREL; | |
cc03ec80 RH |
1851 | break; |
1852 | ||
9e756d64 | 1853 | case R_ALPHA_TLSLDM: |
cc03ec80 | 1854 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
a7519a3c | 1855 | reloc to the 0 symbol so that they all match. */ |
cc03ec80 | 1856 | r_symndx = 0; |
a7519a3c RH |
1857 | h = 0; |
1858 | maybe_dynamic = FALSE; | |
1859 | /* FALLTHRU */ | |
1860 | ||
1861 | case R_ALPHA_TLSGD: | |
1862 | case R_ALPHA_GOTDTPREL: | |
1863 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 1864 | break; |
cc03ec80 | 1865 | |
a7519a3c RH |
1866 | case R_ALPHA_GOTTPREL: |
1867 | need = NEED_GOT | NEED_GOT_ENTRY; | |
1868 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; | |
1869 | if (info->shared) | |
1870 | info->flags |= DF_STATIC_TLS; | |
1871 | break; | |
1872 | ||
1873 | case R_ALPHA_TPREL64: | |
1874 | if (info->shared || maybe_dynamic) | |
1875 | need = NEED_DYNREL; | |
1876 | if (info->shared) | |
1877 | info->flags |= DF_STATIC_TLS; | |
1878 | break; | |
252b5132 RH |
1879 | } |
1880 | ||
a7519a3c | 1881 | if (need & NEED_GOT) |
252b5132 | 1882 | { |
a7519a3c | 1883 | if (!got_created) |
6cdc0ccc | 1884 | { |
a7519a3c RH |
1885 | if (!elf64_alpha_create_got_section (abfd, info)) |
1886 | return FALSE; | |
cc03ec80 | 1887 | |
a7519a3c RH |
1888 | /* Make sure the object's gotobj is set to itself so |
1889 | that we default to every object with its own .got. | |
1890 | We'll merge .gots later once we've collected each | |
1891 | object's info. */ | |
1892 | alpha_elf_tdata(abfd)->gotobj = abfd; | |
252b5132 | 1893 | |
a7519a3c | 1894 | got_created = 1; |
c328dc3f | 1895 | } |
252b5132 | 1896 | } |
252b5132 | 1897 | |
a7519a3c RH |
1898 | if (need & NEED_GOT_ENTRY) |
1899 | { | |
1900 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 1901 | |
a7519a3c RH |
1902 | gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); |
1903 | if (!gotent) | |
1904 | return FALSE; | |
4a67a098 | 1905 | |
a7519a3c | 1906 | if (gotent_flags) |
cc03ec80 | 1907 | { |
a7519a3c RH |
1908 | gotent->flags |= gotent_flags; |
1909 | if (h) | |
1910 | { | |
1911 | gotent_flags |= h->flags; | |
1912 | h->flags = gotent_flags; | |
4a67a098 | 1913 | |
a7519a3c | 1914 | /* Make a guess as to whether a .plt entry is needed. */ |
6ec7057a RH |
1915 | /* ??? It appears that we won't make it into |
1916 | adjust_dynamic_symbol for symbols that remain | |
1917 | totally undefined. Copying this check here means | |
1918 | we can create a plt entry for them too. */ | |
1919 | h->root.needs_plt | |
1920 | = (maybe_dynamic && elf64_alpha_want_plt (h)); | |
1921 | } | |
a7519a3c | 1922 | } |
252b5132 RH |
1923 | } |
1924 | ||
a7519a3c | 1925 | if (need & NEED_DYNREL) |
9e756d64 | 1926 | { |
a7519a3c | 1927 | if (rel_sec_name == NULL) |
9e756d64 | 1928 | { |
a7519a3c RH |
1929 | rel_sec_name = (bfd_elf_string_from_elf_section |
1930 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
1931 | elf_section_data(sec)->rel_hdr.sh_name)); | |
1932 | if (rel_sec_name == NULL) | |
1933 | return FALSE; | |
1934 | ||
1935 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 | |
1936 | && strcmp (bfd_get_section_name (abfd, sec), | |
1937 | rel_sec_name+5) == 0); | |
9e756d64 | 1938 | } |
a7519a3c RH |
1939 | |
1940 | /* We need to create the section here now whether we eventually | |
1941 | use it or not so that it gets mapped to an output section by | |
1942 | the linker. If not used, we'll kill it in | |
1943 | size_dynamic_sections. */ | |
1944 | if (sreloc == NULL) | |
9e756d64 | 1945 | { |
a7519a3c RH |
1946 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); |
1947 | if (sreloc == NULL) | |
1948 | { | |
1949 | flagword flags; | |
1950 | ||
1951 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
1952 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1953 | if (sec->flags & SEC_ALLOC) | |
1954 | flags |= SEC_ALLOC | SEC_LOAD; | |
1955 | sreloc = bfd_make_section_with_flags (dynobj, | |
1956 | rel_sec_name, | |
1957 | flags); | |
1958 | if (sreloc == NULL | |
1959 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) | |
1960 | return FALSE; | |
1961 | } | |
9e756d64 | 1962 | } |
252b5132 | 1963 | |
a7519a3c RH |
1964 | if (h) |
1965 | { | |
1966 | /* Since we havn't seen all of the input symbols yet, we | |
1967 | don't know whether we'll actually need a dynamic relocation | |
1968 | entry for this reloc. So make a record of it. Once we | |
1969 | find out if this thing needs dynamic relocation we'll | |
1970 | expand the relocation sections by the appropriate amount. */ | |
9e756d64 | 1971 | |
a7519a3c | 1972 | struct alpha_elf_reloc_entry *rent; |
9e756d64 | 1973 | |
a7519a3c RH |
1974 | for (rent = h->reloc_entries; rent; rent = rent->next) |
1975 | if (rent->rtype == r_type && rent->srel == sreloc) | |
1976 | break; | |
252b5132 | 1977 | |
a7519a3c RH |
1978 | if (!rent) |
1979 | { | |
1980 | amt = sizeof (struct alpha_elf_reloc_entry); | |
1981 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); | |
1982 | if (!rent) | |
1983 | return FALSE; | |
252b5132 | 1984 | |
a7519a3c RH |
1985 | rent->srel = sreloc; |
1986 | rent->rtype = r_type; | |
1987 | rent->count = 1; | |
1988 | rent->reltext = (sec->flags & SEC_READONLY) != 0; | |
252b5132 | 1989 | |
a7519a3c RH |
1990 | rent->next = h->reloc_entries; |
1991 | h->reloc_entries = rent; | |
1992 | } | |
1993 | else | |
1994 | rent->count++; | |
1995 | } | |
1996 | else if (info->shared) | |
1997 | { | |
1998 | /* If this is a shared library, and the section is to be | |
1999 | loaded into memory, we need a RELATIVE reloc. */ | |
2000 | sreloc->size += sizeof (Elf64_External_Rela); | |
2001 | if (sec->flags & SEC_READONLY) | |
2002 | info->flags |= DF_TEXTREL; | |
2003 | } | |
252b5132 RH |
2004 | } |
2005 | } | |
2006 | ||
b34976b6 | 2007 | return TRUE; |
252b5132 | 2008 | } |
252b5132 | 2009 | |
a7519a3c RH |
2010 | /* Adjust a symbol defined by a dynamic object and referenced by a |
2011 | regular object. The current definition is in some section of the | |
2012 | dynamic object, but we're not including those sections. We have to | |
2013 | change the definition to something the rest of the link can | |
2014 | understand. */ | |
252b5132 | 2015 | |
b34976b6 | 2016 | static bfd_boolean |
a7519a3c RH |
2017 | elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info, |
2018 | struct elf_link_hash_entry *h) | |
252b5132 | 2019 | { |
a7519a3c RH |
2020 | bfd *dynobj; |
2021 | asection *s; | |
2022 | struct alpha_elf_link_hash_entry *ah; | |
252b5132 | 2023 | |
a7519a3c RH |
2024 | dynobj = elf_hash_table(info)->dynobj; |
2025 | ah = (struct alpha_elf_link_hash_entry *)h; | |
252b5132 | 2026 | |
a7519a3c | 2027 | /* Now that we've seen all of the input symbols, finalize our decision |
6ec7057a RH |
2028 | about whether this symbol should get a .plt entry. Irritatingly, it |
2029 | is common for folk to leave undefined symbols in shared libraries, | |
2030 | and they still expect lazy binding; accept undefined symbols in lieu | |
2031 | of STT_FUNC. */ | |
2032 | if (alpha_elf_dynamic_symbol_p (h, info) && elf64_alpha_want_plt (ah)) | |
252b5132 | 2033 | { |
6ec7057a | 2034 | h->needs_plt = TRUE; |
252b5132 | 2035 | |
a7519a3c RH |
2036 | s = bfd_get_section_by_name(dynobj, ".plt"); |
2037 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
2038 | return FALSE; | |
204692d7 | 2039 | |
6ec7057a RH |
2040 | /* We need one plt entry per got subsection. Delay allocation of |
2041 | the actual plt entries until size_plt_section, called from | |
2042 | size_dynamic_sections or during relaxation. */ | |
252b5132 | 2043 | |
a7519a3c RH |
2044 | return TRUE; |
2045 | } | |
2046 | else | |
6ec7057a | 2047 | h->needs_plt = FALSE; |
252b5132 | 2048 | |
a7519a3c RH |
2049 | /* If this is a weak symbol, and there is a real definition, the |
2050 | processor independent code will have arranged for us to see the | |
2051 | real definition first, and we can just use the same value. */ | |
2052 | if (h->u.weakdef != NULL) | |
252b5132 | 2053 | { |
a7519a3c RH |
2054 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2055 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2056 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2057 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2058 | return TRUE; | |
252b5132 | 2059 | } |
a7519a3c RH |
2060 | |
2061 | /* This is a reference to a symbol defined by a dynamic object which | |
2062 | is not a function. The Alpha, since it uses .got entries for all | |
2063 | symbols even in regular objects, does not need the hackery of a | |
2064 | .dynbss section and COPY dynamic relocations. */ | |
252b5132 | 2065 | |
b34976b6 | 2066 | return TRUE; |
252b5132 RH |
2067 | } |
2068 | ||
a7519a3c RH |
2069 | /* Symbol versioning can create new symbols, and make our old symbols |
2070 | indirect to the new ones. Consolidate the got and reloc information | |
2071 | in these situations. */ | |
252b5132 | 2072 | |
b34976b6 | 2073 | static bfd_boolean |
a7519a3c RH |
2074 | elf64_alpha_merge_ind_symbols (struct alpha_elf_link_hash_entry *hi, |
2075 | PTR dummy ATTRIBUTE_UNUSED) | |
252b5132 | 2076 | { |
a7519a3c | 2077 | struct alpha_elf_link_hash_entry *hs; |
252b5132 | 2078 | |
a7519a3c RH |
2079 | if (hi->root.root.type != bfd_link_hash_indirect) |
2080 | return TRUE; | |
2081 | hs = hi; | |
2082 | do { | |
2083 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
2084 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
252b5132 | 2085 | |
a7519a3c RH |
2086 | /* Merge the flags. Whee. */ |
2087 | ||
2088 | hs->flags |= hi->flags; | |
2089 | ||
2090 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
2091 | doing so, since we don't need it anymore. */ | |
2092 | ||
2093 | if (hs->got_entries == NULL) | |
2094 | hs->got_entries = hi->got_entries; | |
2095 | else | |
2096 | { | |
2097 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
2098 | ||
2099 | gsh = hs->got_entries; | |
2100 | for (gi = hi->got_entries; gi ; gi = gin) | |
252b5132 | 2101 | { |
a7519a3c RH |
2102 | gin = gi->next; |
2103 | for (gs = gsh; gs ; gs = gs->next) | |
2104 | if (gi->gotobj == gs->gotobj | |
2105 | && gi->reloc_type == gs->reloc_type | |
2106 | && gi->addend == gs->addend) | |
2107 | { | |
2108 | gi->use_count += gs->use_count; | |
2109 | goto got_found; | |
2110 | } | |
2111 | gi->next = hs->got_entries; | |
2112 | hs->got_entries = gi; | |
2113 | got_found:; | |
252b5132 | 2114 | } |
a7519a3c RH |
2115 | } |
2116 | hi->got_entries = NULL; | |
252b5132 | 2117 | |
a7519a3c RH |
2118 | /* And similar for the reloc entries. */ |
2119 | ||
2120 | if (hs->reloc_entries == NULL) | |
2121 | hs->reloc_entries = hi->reloc_entries; | |
2122 | else | |
2123 | { | |
2124 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
2125 | ||
2126 | rsh = hs->reloc_entries; | |
2127 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
2128 | { | |
2129 | rin = ri->next; | |
2130 | for (rs = rsh; rs ; rs = rs->next) | |
2131 | if (ri->rtype == rs->rtype && ri->srel == rs->srel) | |
2132 | { | |
2133 | rs->count += ri->count; | |
2134 | goto found_reloc; | |
2135 | } | |
2136 | ri->next = hs->reloc_entries; | |
2137 | hs->reloc_entries = ri; | |
2138 | found_reloc:; | |
2139 | } | |
252b5132 | 2140 | } |
a7519a3c | 2141 | hi->reloc_entries = NULL; |
252b5132 | 2142 | |
b34976b6 | 2143 | return TRUE; |
252b5132 RH |
2144 | } |
2145 | ||
a7519a3c | 2146 | /* Is it possible to merge two object file's .got tables? */ |
252b5132 | 2147 | |
b34976b6 | 2148 | static bfd_boolean |
a7519a3c | 2149 | elf64_alpha_can_merge_gots (bfd *a, bfd *b) |
252b5132 | 2150 | { |
a7519a3c RH |
2151 | int total = alpha_elf_tdata (a)->total_got_size; |
2152 | bfd *bsub; | |
252b5132 | 2153 | |
a7519a3c RH |
2154 | /* Trivial quick fallout test. */ |
2155 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) | |
2156 | return TRUE; | |
252b5132 | 2157 | |
a7519a3c RH |
2158 | /* By their nature, local .got entries cannot be merged. */ |
2159 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) | |
b34976b6 | 2160 | return FALSE; |
252b5132 | 2161 | |
a7519a3c RH |
2162 | /* Failing the common trivial comparison, we must effectively |
2163 | perform the merge. Not actually performing the merge means that | |
2164 | we don't have to store undo information in case we fail. */ | |
2165 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
2166 | { | |
2167 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
2168 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
2169 | int i, n; | |
2170 | ||
2171 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; | |
2172 | for (i = 0; i < n; ++i) | |
2173 | { | |
2174 | struct alpha_elf_got_entry *ae, *be; | |
2175 | struct alpha_elf_link_hash_entry *h; | |
2176 | ||
2177 | h = hashes[i]; | |
2178 | while (h->root.root.type == bfd_link_hash_indirect | |
2179 | || h->root.root.type == bfd_link_hash_warning) | |
2180 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2181 | ||
2182 | for (be = h->got_entries; be ; be = be->next) | |
2183 | { | |
2184 | if (be->use_count == 0) | |
2185 | continue; | |
2186 | if (be->gotobj != b) | |
2187 | continue; | |
2188 | ||
2189 | for (ae = h->got_entries; ae ; ae = ae->next) | |
2190 | if (ae->gotobj == a | |
2191 | && ae->reloc_type == be->reloc_type | |
2192 | && ae->addend == be->addend) | |
2193 | goto global_found; | |
2194 | ||
2195 | total += alpha_got_entry_size (be->reloc_type); | |
2196 | if (total > MAX_GOT_SIZE) | |
2197 | return FALSE; | |
2198 | global_found:; | |
2199 | } | |
2200 | } | |
2201 | } | |
252b5132 | 2202 | |
b34976b6 | 2203 | return TRUE; |
252b5132 RH |
2204 | } |
2205 | ||
a7519a3c | 2206 | /* Actually merge two .got tables. */ |
252b5132 | 2207 | |
a7519a3c RH |
2208 | static void |
2209 | elf64_alpha_merge_gots (bfd *a, bfd *b) | |
252b5132 | 2210 | { |
a7519a3c RH |
2211 | int total = alpha_elf_tdata (a)->total_got_size; |
2212 | bfd *bsub; | |
252b5132 | 2213 | |
a7519a3c RH |
2214 | /* Remember local expansion. */ |
2215 | { | |
2216 | int e = alpha_elf_tdata (b)->local_got_size; | |
2217 | total += e; | |
2218 | alpha_elf_tdata (a)->local_got_size += e; | |
2219 | } | |
252b5132 | 2220 | |
a7519a3c RH |
2221 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) |
2222 | { | |
2223 | struct alpha_elf_got_entry **local_got_entries; | |
2224 | struct alpha_elf_link_hash_entry **hashes; | |
2225 | Elf_Internal_Shdr *symtab_hdr; | |
2226 | int i, n; | |
252b5132 | 2227 | |
a7519a3c RH |
2228 | /* Let the local .got entries know they are part of a new subsegment. */ |
2229 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
2230 | if (local_got_entries) | |
2231 | { | |
2232 | n = elf_tdata (bsub)->symtab_hdr.sh_info; | |
2233 | for (i = 0; i < n; ++i) | |
2234 | { | |
2235 | struct alpha_elf_got_entry *ent; | |
2236 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
2237 | ent->gotobj = a; | |
2238 | } | |
2239 | } | |
252b5132 | 2240 | |
a7519a3c RH |
2241 | /* Merge the global .got entries. */ |
2242 | hashes = alpha_elf_sym_hashes (bsub); | |
2243 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
252b5132 | 2244 | |
a7519a3c RH |
2245 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
2246 | for (i = 0; i < n; ++i) | |
2247 | { | |
2248 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
2249 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 2250 | |
a7519a3c RH |
2251 | h = hashes[i]; |
2252 | while (h->root.root.type == bfd_link_hash_indirect | |
2253 | || h->root.root.type == bfd_link_hash_warning) | |
2254 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 2255 | |
a7519a3c RH |
2256 | pbe = start = &h->got_entries; |
2257 | while ((be = *pbe) != NULL) | |
2258 | { | |
2259 | if (be->use_count == 0) | |
2260 | { | |
2261 | *pbe = be->next; | |
2262 | memset (be, 0xa5, sizeof (*be)); | |
2263 | goto kill; | |
2264 | } | |
2265 | if (be->gotobj != b) | |
2266 | goto next; | |
2267 | ||
2268 | for (ae = *start; ae ; ae = ae->next) | |
2269 | if (ae->gotobj == a | |
2270 | && ae->reloc_type == be->reloc_type | |
2271 | && ae->addend == be->addend) | |
2272 | { | |
2273 | ae->flags |= be->flags; | |
2274 | ae->use_count += be->use_count; | |
2275 | *pbe = be->next; | |
2276 | memset (be, 0xa5, sizeof (*be)); | |
2277 | goto kill; | |
2278 | } | |
2279 | be->gotobj = a; | |
2280 | total += alpha_got_entry_size (be->reloc_type); | |
252b5132 | 2281 | |
a7519a3c RH |
2282 | next:; |
2283 | pbe = &be->next; | |
2284 | kill:; | |
2285 | } | |
2286 | } | |
252b5132 | 2287 | |
a7519a3c RH |
2288 | alpha_elf_tdata (bsub)->gotobj = a; |
2289 | } | |
2290 | alpha_elf_tdata (a)->total_got_size = total; | |
252b5132 | 2291 | |
a7519a3c RH |
2292 | /* Merge the two in_got chains. */ |
2293 | { | |
2294 | bfd *next; | |
252b5132 | 2295 | |
a7519a3c RH |
2296 | bsub = a; |
2297 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
2298 | bsub = next; | |
252b5132 | 2299 | |
a7519a3c RH |
2300 | alpha_elf_tdata (bsub)->in_got_link_next = b; |
2301 | } | |
252b5132 | 2302 | } |
a7519a3c RH |
2303 | |
2304 | /* Calculate the offsets for the got entries. */ | |
252b5132 | 2305 | |
b34976b6 | 2306 | static bfd_boolean |
a7519a3c RH |
2307 | elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h, |
2308 | PTR arg ATTRIBUTE_UNUSED) | |
252b5132 | 2309 | { |
a7519a3c | 2310 | struct alpha_elf_got_entry *gotent; |
252b5132 | 2311 | |
a7519a3c RH |
2312 | if (h->root.root.type == bfd_link_hash_warning) |
2313 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
252b5132 | 2314 | |
a7519a3c RH |
2315 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
2316 | if (gotent->use_count > 0) | |
2317 | { | |
2318 | struct alpha_elf_obj_tdata *td; | |
2319 | bfd_size_type *plge; | |
252b5132 | 2320 | |
a7519a3c | 2321 | td = alpha_elf_tdata (gotent->gotobj); |
a7519a3c RH |
2322 | plge = &td->got->size; |
2323 | gotent->got_offset = *plge; | |
2324 | *plge += alpha_got_entry_size (gotent->reloc_type); | |
2325 | } | |
252b5132 | 2326 | |
6ec7057a | 2327 | return TRUE; |
a7519a3c | 2328 | } |
252b5132 | 2329 | |
a7519a3c RH |
2330 | static void |
2331 | elf64_alpha_calc_got_offsets (struct bfd_link_info *info) | |
2332 | { | |
2333 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; | |
252b5132 | 2334 | |
a7519a3c RH |
2335 | /* First, zero out the .got sizes, as we may be recalculating the |
2336 | .got after optimizing it. */ | |
2337 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2338 | alpha_elf_tdata(i)->got->size = 0; | |
252b5132 | 2339 | |
a7519a3c RH |
2340 | /* Next, fill in the offsets for all the global entries. */ |
2341 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2342 | elf64_alpha_calc_got_offsets_for_symbol, | |
2343 | NULL); | |
252b5132 | 2344 | |
a7519a3c RH |
2345 | /* Finally, fill in the offsets for the local entries. */ |
2346 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2347 | { | |
2348 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->size; | |
2349 | bfd *j; | |
252b5132 | 2350 | |
a7519a3c RH |
2351 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2352 | { | |
2353 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2354 | int k, n; | |
252b5132 | 2355 | |
a7519a3c RH |
2356 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2357 | if (!local_got_entries) | |
2358 | continue; | |
252b5132 | 2359 | |
a7519a3c RH |
2360 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2361 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
2362 | if (gotent->use_count > 0) | |
2363 | { | |
2364 | gotent->got_offset = got_offset; | |
2365 | got_offset += alpha_got_entry_size (gotent->reloc_type); | |
2366 | } | |
2367 | } | |
252b5132 | 2368 | |
a7519a3c RH |
2369 | alpha_elf_tdata(i)->got->size = got_offset; |
2370 | } | |
2371 | } | |
252b5132 | 2372 | |
a7519a3c | 2373 | /* Constructs the gots. */ |
252b5132 | 2374 | |
b34976b6 | 2375 | static bfd_boolean |
a7519a3c | 2376 | elf64_alpha_size_got_sections (struct bfd_link_info *info) |
252b5132 | 2377 | { |
a7519a3c RH |
2378 | bfd *i, *got_list, *cur_got_obj = NULL; |
2379 | int something_changed = 0; | |
252b5132 | 2380 | |
a7519a3c | 2381 | got_list = alpha_elf_hash_table (info)->got_list; |
95404643 | 2382 | |
a7519a3c RH |
2383 | /* On the first time through, pretend we have an existing got list |
2384 | consisting of all of the input files. */ | |
2385 | if (got_list == NULL) | |
252b5132 | 2386 | { |
a7519a3c | 2387 | for (i = info->input_bfds; i ; i = i->link_next) |
252b5132 | 2388 | { |
a7519a3c RH |
2389 | bfd *this_got = alpha_elf_tdata (i)->gotobj; |
2390 | if (this_got == NULL) | |
2391 | continue; | |
252b5132 | 2392 | |
a7519a3c RH |
2393 | /* We are assuming no merging has yet occurred. */ |
2394 | BFD_ASSERT (this_got == i); | |
252b5132 | 2395 | |
a7519a3c | 2396 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 | 2397 | { |
a7519a3c RH |
2398 | /* Yikes! A single object file has too many entries. */ |
2399 | (*_bfd_error_handler) | |
2400 | (_("%B: .got subsegment exceeds 64K (size %d)"), | |
2401 | i, alpha_elf_tdata (this_got)->total_got_size); | |
b34976b6 | 2402 | return FALSE; |
252b5132 | 2403 | } |
252b5132 | 2404 | |
a7519a3c RH |
2405 | if (got_list == NULL) |
2406 | got_list = this_got; | |
2407 | else | |
2408 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
2409 | cur_got_obj = this_got; | |
252b5132 RH |
2410 | } |
2411 | ||
a7519a3c RH |
2412 | /* Strange degenerate case of no got references. */ |
2413 | if (got_list == NULL) | |
2414 | return TRUE; | |
2415 | ||
2416 | alpha_elf_hash_table (info)->got_list = got_list; | |
2417 | ||
2418 | /* Force got offsets to be recalculated. */ | |
2419 | something_changed = 1; | |
2420 | } | |
2421 | ||
2422 | cur_got_obj = got_list; | |
2423 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; | |
2424 | while (i != NULL) | |
2425 | { | |
2426 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
252b5132 | 2427 | { |
a7519a3c | 2428 | elf64_alpha_merge_gots (cur_got_obj, i); |
252b5132 | 2429 | |
a7519a3c RH |
2430 | alpha_elf_tdata(i)->got->size = 0; |
2431 | i = alpha_elf_tdata(i)->got_link_next; | |
2432 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
2433 | ||
2434 | something_changed = 1; | |
2435 | } | |
2436 | else | |
2437 | { | |
2438 | cur_got_obj = i; | |
2439 | i = alpha_elf_tdata(i)->got_link_next; | |
2440 | } | |
252b5132 RH |
2441 | } |
2442 | ||
a7519a3c RH |
2443 | /* Once the gots have been merged, fill in the got offsets for |
2444 | everything therein. */ | |
2445 | if (1 || something_changed) | |
2446 | elf64_alpha_calc_got_offsets (info); | |
252b5132 | 2447 | |
a7519a3c | 2448 | return TRUE; |
252b5132 | 2449 | } |
252b5132 | 2450 | |
b34976b6 | 2451 | static bfd_boolean |
a7519a3c | 2452 | elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, PTR data) |
252b5132 | 2453 | { |
a7519a3c RH |
2454 | asection *splt = (asection *) data; |
2455 | struct alpha_elf_got_entry *gotent; | |
6ec7057a | 2456 | bfd_boolean saw_one = FALSE; |
252b5132 | 2457 | |
a7519a3c RH |
2458 | /* If we didn't need an entry before, we still don't. */ |
2459 | if (!h->root.needs_plt) | |
2460 | return TRUE; | |
e92d460e | 2461 | |
6ec7057a | 2462 | /* For each LITERAL got entry still in use, allocate a plt entry. */ |
a7519a3c RH |
2463 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) |
2464 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
2465 | && gotent->use_count > 0) | |
6ec7057a RH |
2466 | { |
2467 | if (splt->size == 0) | |
2468 | splt->size = PLT_HEADER_SIZE; | |
2469 | gotent->plt_offset = splt->size; | |
2470 | splt->size += PLT_ENTRY_SIZE; | |
2471 | saw_one = TRUE; | |
2472 | } | |
a7519a3c | 2473 | |
6ec7057a RH |
2474 | /* If there weren't any, there's no longer a need for the PLT entry. */ |
2475 | if (!saw_one) | |
2476 | h->root.needs_plt = FALSE; | |
a7519a3c RH |
2477 | |
2478 | return TRUE; | |
2479 | } | |
2480 | ||
2481 | /* Called from relax_section to rebuild the PLT in light of | |
2482 | potential changes in the function's status. */ | |
2483 | ||
2484 | static bfd_boolean | |
2485 | elf64_alpha_size_plt_section (struct bfd_link_info *info) | |
2486 | { | |
6ec7057a | 2487 | asection *splt, *spltrel, *sgotplt; |
a7519a3c RH |
2488 | unsigned long entries; |
2489 | bfd *dynobj; | |
2490 | ||
2491 | dynobj = elf_hash_table(info)->dynobj; | |
6ec7057a | 2492 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
a7519a3c | 2493 | if (splt == NULL) |
b34976b6 | 2494 | return TRUE; |
252b5132 | 2495 | |
a7519a3c | 2496 | splt->size = 0; |
252b5132 | 2497 | |
a7519a3c RH |
2498 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), |
2499 | elf64_alpha_size_plt_section_1, splt); | |
e92d460e | 2500 | |
a7519a3c RH |
2501 | /* Every plt entry requires a JMP_SLOT relocation. */ |
2502 | spltrel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2503 | if (splt->size) | |
6ec7057a RH |
2504 | { |
2505 | if (elf64_alpha_use_secureplt) | |
2506 | entries = (splt->size - NEW_PLT_HEADER_SIZE) / NEW_PLT_ENTRY_SIZE; | |
2507 | else | |
2508 | entries = (splt->size - OLD_PLT_HEADER_SIZE) / OLD_PLT_ENTRY_SIZE; | |
2509 | } | |
a7519a3c RH |
2510 | else |
2511 | entries = 0; | |
2512 | spltrel->size = entries * sizeof (Elf64_External_Rela); | |
e92d460e | 2513 | |
6ec7057a RH |
2514 | /* When using the secureplt, we need two words somewhere in the data |
2515 | segment for the dynamic linker to tell us where to go. This is the | |
2516 | entire contents of the .got.plt section. */ | |
2517 | if (elf64_alpha_use_secureplt) | |
2518 | { | |
2519 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2520 | sgotplt->size = entries ? 16 : 0; | |
2521 | } | |
2522 | ||
a7519a3c RH |
2523 | return TRUE; |
2524 | } | |
e92d460e | 2525 | |
a7519a3c RH |
2526 | static bfd_boolean |
2527 | elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2528 | struct bfd_link_info *info) | |
2529 | { | |
2530 | bfd *i; | |
252b5132 | 2531 | |
a7519a3c RH |
2532 | if (info->relocatable) |
2533 | return TRUE; | |
252b5132 | 2534 | |
a7519a3c RH |
2535 | /* First, take care of the indirect symbols created by versioning. */ |
2536 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2537 | elf64_alpha_merge_ind_symbols, | |
2538 | NULL); | |
252b5132 | 2539 | |
a7519a3c RH |
2540 | if (!elf64_alpha_size_got_sections (info)) |
2541 | return FALSE; | |
252b5132 | 2542 | |
a7519a3c RH |
2543 | /* Allocate space for all of the .got subsections. */ |
2544 | i = alpha_elf_hash_table (info)->got_list; | |
2545 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) | |
252b5132 | 2546 | { |
a7519a3c RH |
2547 | asection *s = alpha_elf_tdata(i)->got; |
2548 | if (s->size > 0) | |
2549 | { | |
2550 | s->contents = (bfd_byte *) bfd_zalloc (i, s->size); | |
2551 | if (s->contents == NULL) | |
2552 | return FALSE; | |
2553 | } | |
252b5132 RH |
2554 | } |
2555 | ||
b34976b6 | 2556 | return TRUE; |
252b5132 | 2557 | } |
3765b1be | 2558 | |
a7519a3c | 2559 | /* The number of dynamic relocations required by a static relocation. */ |
3765b1be | 2560 | |
a7519a3c RH |
2561 | static int |
2562 | alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared) | |
2563 | { | |
2564 | switch (r_type) | |
3765b1be | 2565 | { |
a7519a3c RH |
2566 | /* May appear in GOT entries. */ |
2567 | case R_ALPHA_TLSGD: | |
2568 | return (dynamic ? 2 : shared ? 1 : 0); | |
2569 | case R_ALPHA_TLSLDM: | |
2570 | return shared; | |
2571 | case R_ALPHA_LITERAL: | |
2572 | case R_ALPHA_GOTTPREL: | |
2573 | return dynamic || shared; | |
2574 | case R_ALPHA_GOTDTPREL: | |
2575 | return dynamic; | |
3765b1be | 2576 | |
a7519a3c RH |
2577 | /* May appear in data sections. */ |
2578 | case R_ALPHA_REFLONG: | |
2579 | case R_ALPHA_REFQUAD: | |
2580 | case R_ALPHA_TPREL64: | |
2581 | return dynamic || shared; | |
3765b1be | 2582 | |
a7519a3c RH |
2583 | /* Everything else is illegal. We'll issue an error during |
2584 | relocate_section. */ | |
2585 | default: | |
2586 | return 0; | |
2587 | } | |
2588 | } | |
3765b1be | 2589 | |
a7519a3c | 2590 | /* Work out the sizes of the dynamic relocation entries. */ |
3765b1be | 2591 | |
a7519a3c RH |
2592 | static bfd_boolean |
2593 | elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h, | |
2594 | struct bfd_link_info *info) | |
2595 | { | |
2596 | bfd_boolean dynamic; | |
2597 | struct alpha_elf_reloc_entry *relent; | |
2598 | unsigned long entries; | |
3765b1be | 2599 | |
a7519a3c RH |
2600 | if (h->root.root.type == bfd_link_hash_warning) |
2601 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3765b1be | 2602 | |
a7519a3c RH |
2603 | /* If the symbol was defined as a common symbol in a regular object |
2604 | file, and there was no definition in any dynamic object, then the | |
2605 | linker will have allocated space for the symbol in a common | |
2606 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
2607 | set. This is done for dynamic symbols in | |
2608 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
2609 | symbols, somehow. */ | |
2610 | if (!h->root.def_regular | |
2611 | && h->root.ref_regular | |
2612 | && !h->root.def_dynamic | |
2613 | && (h->root.root.type == bfd_link_hash_defined | |
2614 | || h->root.root.type == bfd_link_hash_defweak) | |
2615 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
2616 | h->root.def_regular = 1; | |
3765b1be | 2617 | |
a7519a3c RH |
2618 | /* If the symbol is dynamic, we'll need all the relocations in their |
2619 | natural form. If this is a shared object, and it has been forced | |
2620 | local, we'll need the same number of RELATIVE relocations. */ | |
2621 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
3765b1be | 2622 | |
a7519a3c RH |
2623 | /* If the symbol is a hidden undefined weak, then we never have any |
2624 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2625 | based on info->shared. */ | |
2626 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2627 | return TRUE; | |
2628 | ||
2629 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
3765b1be | 2630 | { |
a7519a3c RH |
2631 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, |
2632 | info->shared); | |
2633 | if (entries) | |
2634 | { | |
2635 | relent->srel->size += | |
2636 | entries * sizeof (Elf64_External_Rela) * relent->count; | |
2637 | if (relent->reltext) | |
2638 | info->flags |= DT_TEXTREL; | |
2639 | } | |
2640 | } | |
3765b1be | 2641 | |
a7519a3c RH |
2642 | return TRUE; |
2643 | } | |
3765b1be | 2644 | |
a7519a3c RH |
2645 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the |
2646 | global symbols. */ | |
3765b1be | 2647 | |
a7519a3c RH |
2648 | static bfd_boolean |
2649 | elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h, | |
2650 | struct bfd_link_info *info) | |
2651 | { | |
2652 | bfd_boolean dynamic; | |
2653 | struct alpha_elf_got_entry *gotent; | |
2654 | unsigned long entries; | |
3765b1be | 2655 | |
a7519a3c RH |
2656 | if (h->root.root.type == bfd_link_hash_warning) |
2657 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
2658 | ||
6ec7057a RH |
2659 | /* If we're using a plt for this symbol, then all of its relocations |
2660 | for its got entries go into .rela.plt. */ | |
2661 | if (h->root.needs_plt) | |
2662 | return TRUE; | |
2663 | ||
a7519a3c RH |
2664 | /* If the symbol is dynamic, we'll need all the relocations in their |
2665 | natural form. If this is a shared object, and it has been forced | |
2666 | local, we'll need the same number of RELATIVE relocations. */ | |
2667 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
2668 | ||
2669 | /* If the symbol is a hidden undefined weak, then we never have any | |
2670 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
2671 | based on info->shared. */ | |
2672 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) | |
2673 | return TRUE; | |
2674 | ||
2675 | entries = 0; | |
2676 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2677 | if (gotent->use_count > 0) | |
2678 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, | |
2679 | dynamic, info->shared); | |
2680 | ||
a7519a3c RH |
2681 | if (entries > 0) |
2682 | { | |
2683 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
2684 | asection *srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2685 | BFD_ASSERT (srel != NULL); | |
2686 | srel->size += sizeof (Elf64_External_Rela) * entries; | |
3765b1be | 2687 | } |
3765b1be | 2688 | |
a7519a3c | 2689 | return TRUE; |
3765b1be RH |
2690 | } |
2691 | ||
a7519a3c | 2692 | /* Set the sizes of the dynamic relocation sections. */ |
252b5132 | 2693 | |
b34976b6 | 2694 | static bfd_boolean |
a7519a3c | 2695 | elf64_alpha_size_rela_got_section (struct bfd_link_info *info) |
252b5132 | 2696 | { |
a7519a3c RH |
2697 | unsigned long entries; |
2698 | bfd *i, *dynobj; | |
2699 | asection *srel; | |
252b5132 | 2700 | |
a7519a3c RH |
2701 | /* Shared libraries often require RELATIVE relocs, and some relocs |
2702 | require attention for the main application as well. */ | |
252b5132 | 2703 | |
a7519a3c RH |
2704 | entries = 0; |
2705 | for (i = alpha_elf_hash_table(info)->got_list; | |
2706 | i ; i = alpha_elf_tdata(i)->got_link_next) | |
2707 | { | |
2708 | bfd *j; | |
3241278a | 2709 | |
a7519a3c RH |
2710 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2711 | { | |
2712 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2713 | int k, n; | |
252b5132 | 2714 | |
a7519a3c RH |
2715 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2716 | if (!local_got_entries) | |
2717 | continue; | |
252b5132 | 2718 | |
a7519a3c RH |
2719 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2720 | for (gotent = local_got_entries[k]; | |
2721 | gotent ; gotent = gotent->next) | |
2722 | if (gotent->use_count > 0) | |
2723 | entries += (alpha_dynamic_entries_for_reloc | |
2724 | (gotent->reloc_type, 0, info->shared)); | |
2725 | } | |
2726 | } | |
3765b1be | 2727 | |
a7519a3c RH |
2728 | dynobj = elf_hash_table(info)->dynobj; |
2729 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2730 | if (!srel) | |
2731 | { | |
2732 | BFD_ASSERT (entries == 0); | |
2733 | return TRUE; | |
2734 | } | |
2735 | srel->size = sizeof (Elf64_External_Rela) * entries; | |
252b5132 | 2736 | |
a7519a3c RH |
2737 | /* Now do the non-local symbols. */ |
2738 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2739 | elf64_alpha_size_rela_got_1, info); | |
252b5132 | 2740 | |
a7519a3c RH |
2741 | return TRUE; |
2742 | } | |
252b5132 | 2743 | |
a7519a3c | 2744 | /* Set the sizes of the dynamic sections. */ |
3765b1be | 2745 | |
a7519a3c RH |
2746 | static bfd_boolean |
2747 | elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2748 | struct bfd_link_info *info) | |
2749 | { | |
2750 | bfd *dynobj; | |
2751 | asection *s; | |
2752 | bfd_boolean relplt; | |
3765b1be | 2753 | |
a7519a3c RH |
2754 | dynobj = elf_hash_table(info)->dynobj; |
2755 | BFD_ASSERT(dynobj != NULL); | |
252b5132 | 2756 | |
a7519a3c RH |
2757 | if (elf_hash_table (info)->dynamic_sections_created) |
2758 | { | |
2759 | /* Set the contents of the .interp section to the interpreter. */ | |
2760 | if (info->executable) | |
252b5132 | 2761 | { |
a7519a3c RH |
2762 | s = bfd_get_section_by_name (dynobj, ".interp"); |
2763 | BFD_ASSERT (s != NULL); | |
2764 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2765 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2766 | } | |
3765b1be | 2767 | |
a7519a3c RH |
2768 | /* Now that we've seen all of the input files, we can decide which |
2769 | symbols need dynamic relocation entries and which don't. We've | |
2770 | collected information in check_relocs that we can now apply to | |
2771 | size the dynamic relocation sections. */ | |
2772 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2773 | elf64_alpha_calc_dynrel_sizes, info); | |
252b5132 | 2774 | |
a7519a3c | 2775 | elf64_alpha_size_rela_got_section (info); |
6ec7057a | 2776 | elf64_alpha_size_plt_section (info); |
a7519a3c RH |
2777 | } |
2778 | /* else we're not dynamic and by definition we don't need such things. */ | |
3765b1be | 2779 | |
a7519a3c RH |
2780 | /* The check_relocs and adjust_dynamic_symbol entry points have |
2781 | determined the sizes of the various dynamic sections. Allocate | |
2782 | memory for them. */ | |
2783 | relplt = FALSE; | |
2784 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2785 | { | |
2786 | const char *name; | |
2787 | bfd_boolean strip; | |
3765b1be | 2788 | |
a7519a3c RH |
2789 | if (!(s->flags & SEC_LINKER_CREATED)) |
2790 | continue; | |
cc03ec80 | 2791 | |
a7519a3c RH |
2792 | /* It's OK to base decisions on the section name, because none |
2793 | of the dynobj section names depend upon the input files. */ | |
2794 | name = bfd_get_section_name (dynobj, s); | |
3765b1be | 2795 | |
a7519a3c RH |
2796 | /* If we don't need this section, strip it from the output file. |
2797 | This is to handle .rela.bss and .rela.plt. We must create it | |
2798 | in create_dynamic_sections, because it must be created before | |
2799 | the linker maps input sections to output sections. The | |
2800 | linker does that before adjust_dynamic_symbol is called, and | |
2801 | it is that function which decides whether anything needs to | |
2802 | go into these sections. */ | |
3765b1be | 2803 | |
a7519a3c | 2804 | strip = FALSE; |
3765b1be | 2805 | |
a7519a3c | 2806 | if (strncmp (name, ".rela", 5) == 0) |
3765b1be | 2807 | { |
a7519a3c | 2808 | strip = (s->size == 0); |
252b5132 | 2809 | |
a7519a3c RH |
2810 | if (!strip) |
2811 | { | |
2812 | if (strcmp(name, ".rela.plt") == 0) | |
2813 | relplt = TRUE; | |
252b5132 | 2814 | |
a7519a3c RH |
2815 | /* We use the reloc_count field as a counter if we need |
2816 | to copy relocs into the output file. */ | |
2817 | s->reloc_count = 0; | |
252b5132 | 2818 | } |
3765b1be | 2819 | } |
a7519a3c | 2820 | else if (strcmp (name, ".plt") != 0) |
3765b1be | 2821 | { |
a7519a3c RH |
2822 | /* It's not one of our dynamic sections, so don't allocate space. */ |
2823 | continue; | |
2824 | } | |
252b5132 | 2825 | |
a7519a3c RH |
2826 | if (strip) |
2827 | s->flags |= SEC_EXCLUDE; | |
2828 | else | |
2829 | { | |
2830 | /* Allocate memory for the section contents. */ | |
2831 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
2832 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 2833 | return FALSE; |
a7519a3c RH |
2834 | } |
2835 | } | |
3765b1be | 2836 | |
a7519a3c RH |
2837 | if (elf_hash_table (info)->dynamic_sections_created) |
2838 | { | |
2839 | /* Add some entries to the .dynamic section. We fill in the | |
2840 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
2841 | must add the entries now so that we get the correct size for | |
2842 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2843 | dynamic linker and used by the debugger. */ | |
2844 | #define add_dynamic_entry(TAG, VAL) \ | |
2845 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3765b1be | 2846 | |
a7519a3c RH |
2847 | if (info->executable) |
2848 | { | |
2849 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
2850 | return FALSE; | |
3765b1be RH |
2851 | } |
2852 | ||
a7519a3c | 2853 | if (relplt) |
3765b1be | 2854 | { |
a7519a3c RH |
2855 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2856 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2857 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2858 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
2859 | return FALSE; | |
6ec7057a RH |
2860 | |
2861 | if (elf64_alpha_use_secureplt | |
2862 | && !add_dynamic_entry (DT_ALPHA_PLTRO, 1)) | |
2863 | return FALSE; | |
a7519a3c | 2864 | } |
252b5132 | 2865 | |
a7519a3c RH |
2866 | if (!add_dynamic_entry (DT_RELA, 0) |
2867 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2868 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
2869 | return FALSE; | |
2870 | ||
2871 | if (info->flags & DF_TEXTREL) | |
2872 | { | |
2873 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2874 | return FALSE; | |
252b5132 RH |
2875 | } |
2876 | } | |
a7519a3c | 2877 | #undef add_dynamic_entry |
252b5132 | 2878 | |
b34976b6 | 2879 | return TRUE; |
252b5132 | 2880 | } |
a7519a3c RH |
2881 | \f |
2882 | /* These functions do relaxation for Alpha ELF. | |
252b5132 | 2883 | |
a7519a3c RH |
2884 | Currently I'm only handling what I can do with existing compiler |
2885 | and assembler support, which means no instructions are removed, | |
2886 | though some may be nopped. At this time GCC does not emit enough | |
2887 | information to do all of the relaxing that is possible. It will | |
2888 | take some not small amount of work for that to happen. | |
252b5132 | 2889 | |
a7519a3c RH |
2890 | There are a couple of interesting papers that I once read on this |
2891 | subject, that I cannot find references to at the moment, that | |
2892 | related to Alpha in particular. They are by David Wall, then of | |
2893 | DEC WRL. */ | |
252b5132 | 2894 | |
a7519a3c RH |
2895 | struct alpha_relax_info |
2896 | { | |
2897 | bfd *abfd; | |
2898 | asection *sec; | |
2899 | bfd_byte *contents; | |
2900 | Elf_Internal_Shdr *symtab_hdr; | |
2901 | Elf_Internal_Rela *relocs, *relend; | |
2902 | struct bfd_link_info *link_info; | |
2903 | bfd_vma gp; | |
2904 | bfd *gotobj; | |
2905 | asection *tsec; | |
2906 | struct alpha_elf_link_hash_entry *h; | |
2907 | struct alpha_elf_got_entry **first_gotent; | |
2908 | struct alpha_elf_got_entry *gotent; | |
2909 | bfd_boolean changed_contents; | |
2910 | bfd_boolean changed_relocs; | |
2911 | unsigned char other; | |
2912 | }; | |
252b5132 | 2913 | |
a7519a3c RH |
2914 | static Elf_Internal_Rela * |
2915 | elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel, | |
2916 | Elf_Internal_Rela *relend, | |
2917 | bfd_vma offset, int type) | |
2918 | { | |
2919 | while (rel < relend) | |
252b5132 | 2920 | { |
a7519a3c RH |
2921 | if (rel->r_offset == offset |
2922 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
2923 | return rel; | |
2924 | ++rel; | |
2925 | } | |
2926 | return NULL; | |
2927 | } | |
252b5132 | 2928 | |
a7519a3c RH |
2929 | static bfd_boolean |
2930 | elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval, | |
2931 | Elf_Internal_Rela *irel, unsigned long r_type) | |
2932 | { | |
2933 | unsigned int insn; | |
2934 | bfd_signed_vma disp; | |
252b5132 | 2935 | |
a7519a3c RH |
2936 | /* Get the instruction. */ |
2937 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
252b5132 | 2938 | |
a7519a3c RH |
2939 | if (insn >> 26 != OP_LDQ) |
2940 | { | |
2941 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; | |
2942 | ((*_bfd_error_handler) | |
2943 | ("%B: %A+0x%lx: warning: %s relocation against unexpected insn", | |
2944 | info->abfd, info->sec, | |
2945 | (unsigned long) irel->r_offset, howto->name)); | |
2946 | return TRUE; | |
2947 | } | |
252b5132 | 2948 | |
a7519a3c RH |
2949 | /* Can't relax dynamic symbols. */ |
2950 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
2951 | return TRUE; | |
252b5132 | 2952 | |
a7519a3c RH |
2953 | /* Can't use local-exec relocations in shared libraries. */ |
2954 | if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared) | |
2955 | return TRUE; | |
252b5132 | 2956 | |
a7519a3c RH |
2957 | if (r_type == R_ALPHA_LITERAL) |
2958 | { | |
2959 | /* Look for nice constant addresses. This includes the not-uncommon | |
2960 | special case of 0 for undefweak symbols. */ | |
2961 | if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
2962 | || (!info->link_info->shared | |
2963 | && (symval >= (bfd_vma)-0x8000 || symval < 0x8000))) | |
2964 | { | |
2965 | disp = 0; | |
2966 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
2967 | insn |= (symval & 0xffff); | |
2968 | r_type = R_ALPHA_NONE; | |
2969 | } | |
2970 | else | |
2971 | { | |
2972 | disp = symval - info->gp; | |
2973 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
2974 | r_type = R_ALPHA_GPREL16; | |
2975 | } | |
252b5132 RH |
2976 | } |
2977 | else | |
252b5132 | 2978 | { |
a7519a3c | 2979 | bfd_vma dtp_base, tp_base; |
252b5132 | 2980 | |
a7519a3c RH |
2981 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
2982 | dtp_base = alpha_get_dtprel_base (info->link_info); | |
2983 | tp_base = alpha_get_tprel_base (info->link_info); | |
2984 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
252b5132 | 2985 | |
a7519a3c | 2986 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); |
252b5132 | 2987 | |
a7519a3c RH |
2988 | switch (r_type) |
2989 | { | |
2990 | case R_ALPHA_GOTDTPREL: | |
2991 | r_type = R_ALPHA_DTPREL16; | |
2992 | break; | |
2993 | case R_ALPHA_GOTTPREL: | |
2994 | r_type = R_ALPHA_TPREL16; | |
2995 | break; | |
2996 | default: | |
2997 | BFD_ASSERT (0); | |
2998 | return FALSE; | |
2999 | } | |
3000 | } | |
252b5132 | 3001 | |
a7519a3c | 3002 | if (disp < -0x8000 || disp >= 0x8000) |
b34976b6 | 3003 | return TRUE; |
252b5132 | 3004 | |
a7519a3c RH |
3005 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
3006 | info->changed_contents = TRUE; | |
252b5132 | 3007 | |
a7519a3c RH |
3008 | /* Reduce the use count on this got entry by one, possibly |
3009 | eliminating it. */ | |
3010 | if (--info->gotent->use_count == 0) | |
252b5132 | 3011 | { |
a7519a3c RH |
3012 | int sz = alpha_got_entry_size (r_type); |
3013 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3014 | if (!info->h) | |
3015 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3016 | } |
252b5132 | 3017 | |
a7519a3c RH |
3018 | /* Smash the existing GOT relocation for its 16-bit immediate pair. */ |
3019 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); | |
3020 | info->changed_relocs = TRUE; | |
3021 | ||
3022 | /* ??? Search forward through this basic block looking for insns | |
3023 | that use the target register. Stop after an insn modifying the | |
3024 | register is seen, or after a branch or call. | |
252b5132 | 3025 | |
a7519a3c RH |
3026 | Any such memory load insn may be substituted by a load directly |
3027 | off the GP. This allows the memory load insn to be issued before | |
3028 | the calculated GP register would otherwise be ready. | |
252b5132 | 3029 | |
a7519a3c RH |
3030 | Any such jsr insn can be replaced by a bsr if it is in range. |
3031 | ||
3032 | This would mean that we'd have to _add_ relocations, the pain of | |
3033 | which gives one pause. */ | |
252b5132 | 3034 | |
b34976b6 | 3035 | return TRUE; |
252b5132 RH |
3036 | } |
3037 | ||
a7519a3c RH |
3038 | static bfd_vma |
3039 | elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval) | |
252b5132 | 3040 | { |
a7519a3c RH |
3041 | /* If the function has the same gp, and we can identify that the |
3042 | function does not use its function pointer, we can eliminate the | |
3043 | address load. */ | |
252b5132 | 3044 | |
a7519a3c RH |
3045 | /* If the symbol is marked NOPV, we are being told the function never |
3046 | needs its procedure value. */ | |
3047 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) | |
3048 | return symval; | |
252b5132 | 3049 | |
a7519a3c RH |
3050 | /* If the symbol is marked STD_GP, we are being told the function does |
3051 | a normal ldgp in the first two words. */ | |
3052 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) | |
3053 | ; | |
252b5132 | 3054 | |
a7519a3c RH |
3055 | /* Otherwise, we may be able to identify a GP load in the first two |
3056 | words, which we can then skip. */ | |
3057 | else | |
252b5132 | 3058 | { |
a7519a3c RH |
3059 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; |
3060 | bfd_vma ofs; | |
252b5132 | 3061 | |
a7519a3c RH |
3062 | /* Load the relocations from the section that the target symbol is in. */ |
3063 | if (info->sec == info->tsec) | |
252b5132 | 3064 | { |
a7519a3c RH |
3065 | tsec_relocs = info->relocs; |
3066 | tsec_relend = info->relend; | |
3067 | tsec_free = NULL; | |
3068 | } | |
3069 | else | |
3070 | { | |
3071 | tsec_relocs = (_bfd_elf_link_read_relocs | |
3072 | (info->abfd, info->tsec, (PTR) NULL, | |
3073 | (Elf_Internal_Rela *) NULL, | |
3074 | info->link_info->keep_memory)); | |
3075 | if (tsec_relocs == NULL) | |
3076 | return 0; | |
3077 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
3078 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); | |
3079 | } | |
252b5132 | 3080 | |
a7519a3c RH |
3081 | /* Recover the symbol's offset within the section. */ |
3082 | ofs = (symval - info->tsec->output_section->vma | |
3083 | - info->tsec->output_offset); | |
252b5132 | 3084 | |
a7519a3c RH |
3085 | /* Look for a GPDISP reloc. */ |
3086 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
3087 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
252b5132 | 3088 | |
a7519a3c RH |
3089 | if (!gpdisp || gpdisp->r_addend != 4) |
3090 | { | |
3091 | if (tsec_free) | |
3092 | free (tsec_free); | |
3093 | return 0; | |
252b5132 | 3094 | } |
a7519a3c RH |
3095 | if (tsec_free) |
3096 | free (tsec_free); | |
252b5132 RH |
3097 | } |
3098 | ||
a7519a3c RH |
3099 | /* We've now determined that we can skip an initial gp load. Verify |
3100 | that the call and the target use the same gp. */ | |
3101 | if (info->link_info->hash->creator != info->tsec->owner->xvec | |
3102 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) | |
3103 | return 0; | |
252b5132 | 3104 | |
a7519a3c RH |
3105 | return symval + 8; |
3106 | } | |
252b5132 | 3107 | |
a7519a3c RH |
3108 | static bfd_boolean |
3109 | elf64_alpha_relax_with_lituse (struct alpha_relax_info *info, | |
3110 | bfd_vma symval, Elf_Internal_Rela *irel) | |
252b5132 | 3111 | { |
a7519a3c RH |
3112 | Elf_Internal_Rela *urel, *irelend = info->relend; |
3113 | int flags, count, i; | |
3114 | bfd_signed_vma disp; | |
3115 | bfd_boolean fits16; | |
3116 | bfd_boolean fits32; | |
3117 | bfd_boolean lit_reused = FALSE; | |
3118 | bfd_boolean all_optimized = TRUE; | |
3119 | unsigned int lit_insn; | |
252b5132 | 3120 | |
a7519a3c RH |
3121 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); |
3122 | if (lit_insn >> 26 != OP_LDQ) | |
3123 | { | |
3124 | ((*_bfd_error_handler) | |
3125 | ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn", | |
3126 | info->abfd, info->sec, | |
3127 | (unsigned long) irel->r_offset)); | |
3128 | return TRUE; | |
3129 | } | |
252b5132 | 3130 | |
a7519a3c RH |
3131 | /* Can't relax dynamic symbols. */ |
3132 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
3133 | return TRUE; | |
3134 | ||
3135 | /* Summarize how this particular LITERAL is used. */ | |
3136 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
252b5132 | 3137 | { |
a7519a3c RH |
3138 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) |
3139 | break; | |
3140 | if (urel->r_addend <= 3) | |
3141 | flags |= 1 << urel->r_addend; | |
3142 | } | |
252b5132 | 3143 | |
a7519a3c RH |
3144 | /* A little preparation for the loop... */ |
3145 | disp = symval - info->gp; | |
252b5132 | 3146 | |
a7519a3c RH |
3147 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) |
3148 | { | |
3149 | unsigned int insn; | |
3150 | int insn_disp; | |
3151 | bfd_signed_vma xdisp; | |
252b5132 | 3152 | |
a7519a3c | 3153 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
252b5132 | 3154 | |
a7519a3c RH |
3155 | switch (urel->r_addend) |
3156 | { | |
3157 | case LITUSE_ALPHA_ADDR: | |
3158 | default: | |
3159 | /* This type is really just a placeholder to note that all | |
3160 | uses cannot be optimized, but to still allow some. */ | |
3161 | all_optimized = FALSE; | |
3162 | break; | |
252b5132 | 3163 | |
a7519a3c RH |
3164 | case LITUSE_ALPHA_BASE: |
3165 | /* We can always optimize 16-bit displacements. */ | |
252b5132 | 3166 | |
a7519a3c RH |
3167 | /* Extract the displacement from the instruction, sign-extending |
3168 | it if necessary, then test whether it is within 16 or 32 bits | |
3169 | displacement from GP. */ | |
3170 | insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
3171 | ||
3172 | xdisp = disp + insn_disp; | |
3173 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); | |
3174 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
3175 | && xdisp < 0x7fff8000); | |
3176 | ||
3177 | if (fits16) | |
3178 | { | |
3179 | /* Take the op code and dest from this insn, take the base | |
3180 | register from the literal insn. Leave the offset alone. */ | |
3181 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); | |
3182 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
3183 | R_ALPHA_GPREL16); | |
3184 | urel->r_addend = irel->r_addend; | |
3185 | info->changed_relocs = TRUE; | |
252b5132 | 3186 | |
a7519a3c RH |
3187 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3188 | info->contents + urel->r_offset); | |
3189 | info->changed_contents = TRUE; | |
252b5132 | 3190 | } |
252b5132 | 3191 | |
a7519a3c RH |
3192 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ |
3193 | else if (fits32 && !(flags & ~6)) | |
3194 | { | |
3195 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ | |
252b5132 | 3196 | |
a7519a3c RH |
3197 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3198 | R_ALPHA_GPRELHIGH); | |
3199 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
3200 | bfd_put_32 (info->abfd, (bfd_vma) lit_insn, | |
3201 | info->contents + irel->r_offset); | |
3202 | lit_reused = TRUE; | |
3203 | info->changed_contents = TRUE; | |
252b5132 | 3204 | |
a7519a3c RH |
3205 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3206 | R_ALPHA_GPRELLOW); | |
3207 | urel->r_addend = irel->r_addend; | |
3208 | info->changed_relocs = TRUE; | |
3209 | } | |
3210 | else | |
3211 | all_optimized = FALSE; | |
3212 | break; | |
252b5132 | 3213 | |
a7519a3c RH |
3214 | case LITUSE_ALPHA_BYTOFF: |
3215 | /* We can always optimize byte instructions. */ | |
252b5132 | 3216 | |
a7519a3c RH |
3217 | /* FIXME: sanity check the insn for byte op. Check that the |
3218 | literal dest reg is indeed Rb in the byte insn. */ | |
252b5132 | 3219 | |
a7519a3c RH |
3220 | insn &= ~ (unsigned) 0x001ff000; |
3221 | insn |= ((symval & 7) << 13) | 0x1000; | |
252b5132 | 3222 | |
a7519a3c RH |
3223 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3224 | urel->r_addend = 0; | |
3225 | info->changed_relocs = TRUE; | |
e92d460e | 3226 | |
a7519a3c RH |
3227 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3228 | info->contents + urel->r_offset); | |
3229 | info->changed_contents = TRUE; | |
3230 | break; | |
252b5132 | 3231 | |
a7519a3c RH |
3232 | case LITUSE_ALPHA_JSR: |
3233 | case LITUSE_ALPHA_TLSGD: | |
3234 | case LITUSE_ALPHA_TLSLDM: | |
0d5f9994 | 3235 | { |
a7519a3c RH |
3236 | bfd_vma optdest, org; |
3237 | bfd_signed_vma odisp; | |
252b5132 | 3238 | |
a7519a3c RH |
3239 | /* For undefined weak symbols, we're mostly interested in getting |
3240 | rid of the got entry whenever possible, so optimize this to a | |
3241 | use of the zero register. */ | |
3242 | if (info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
3243 | { | |
3244 | insn |= 31 << 16; | |
3245 | bfd_put_32 (info->abfd, (bfd_vma) insn, | |
3246 | info->contents + urel->r_offset); | |
252b5132 | 3247 | |
a7519a3c RH |
3248 | info->changed_contents = TRUE; |
3249 | break; | |
3250 | } | |
252b5132 | 3251 | |
a7519a3c RH |
3252 | /* If not zero, place to jump without needing pv. */ |
3253 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
3254 | org = (info->sec->output_section->vma | |
3255 | + info->sec->output_offset | |
3256 | + urel->r_offset + 4); | |
3257 | odisp = (optdest ? optdest : symval) - org; | |
252b5132 | 3258 | |
a7519a3c RH |
3259 | if (odisp >= -0x400000 && odisp < 0x400000) |
3260 | { | |
3261 | Elf_Internal_Rela *xrel; | |
252b5132 | 3262 | |
a7519a3c RH |
3263 | /* Preserve branch prediction call stack when possible. */ |
3264 | if ((insn & INSN_JSR_MASK) == INSN_JSR) | |
3265 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
3266 | else | |
3267 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
252b5132 | 3268 | |
a7519a3c RH |
3269 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3270 | R_ALPHA_BRADDR); | |
3271 | urel->r_addend = irel->r_addend; | |
252b5132 | 3272 | |
a7519a3c RH |
3273 | if (optdest) |
3274 | urel->r_addend += optdest - symval; | |
3275 | else | |
3276 | all_optimized = FALSE; | |
252b5132 | 3277 | |
a7519a3c RH |
3278 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
3279 | info->contents + urel->r_offset); | |
252b5132 | 3280 | |
a7519a3c RH |
3281 | /* Kill any HINT reloc that might exist for this insn. */ |
3282 | xrel = (elf64_alpha_find_reloc_at_ofs | |
3283 | (info->relocs, info->relend, urel->r_offset, | |
3284 | R_ALPHA_HINT)); | |
3285 | if (xrel) | |
3286 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3287 | |
a7519a3c RH |
3288 | info->changed_contents = TRUE; |
3289 | info->changed_relocs = TRUE; | |
3290 | } | |
3291 | else | |
3292 | all_optimized = FALSE; | |
252b5132 | 3293 | |
a7519a3c RH |
3294 | /* Even if the target is not in range for a direct branch, |
3295 | if we share a GP, we can eliminate the gp reload. */ | |
3296 | if (optdest) | |
3297 | { | |
3298 | Elf_Internal_Rela *gpdisp | |
3299 | = (elf64_alpha_find_reloc_at_ofs | |
3300 | (info->relocs, irelend, urel->r_offset + 4, | |
3301 | R_ALPHA_GPDISP)); | |
3302 | if (gpdisp) | |
3303 | { | |
3304 | bfd_byte *p_ldah = info->contents + gpdisp->r_offset; | |
3305 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; | |
3306 | unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); | |
3307 | unsigned int lda = bfd_get_32 (info->abfd, p_lda); | |
252b5132 | 3308 | |
a7519a3c RH |
3309 | /* Verify that the instruction is "ldah $29,0($26)". |
3310 | Consider a function that ends in a noreturn call, | |
3311 | and that the next function begins with an ldgp, | |
3312 | and that by accident there is no padding between. | |
3313 | In that case the insn would use $27 as the base. */ | |
3314 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
3315 | { | |
3316 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah); | |
3317 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda); | |
252b5132 | 3318 | |
a7519a3c RH |
3319 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3320 | info->changed_contents = TRUE; | |
3321 | info->changed_relocs = TRUE; | |
3322 | } | |
3323 | } | |
3324 | } | |
3325 | } | |
3326 | break; | |
252b5132 | 3327 | } |
252b5132 RH |
3328 | } |
3329 | ||
a7519a3c RH |
3330 | /* If all cases were optimized, we can reduce the use count on this |
3331 | got entry by one, possibly eliminating it. */ | |
3332 | if (all_optimized) | |
252b5132 | 3333 | { |
a7519a3c | 3334 | if (--info->gotent->use_count == 0) |
252b5132 | 3335 | { |
a7519a3c RH |
3336 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
3337 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3338 | if (!info->h) | |
3339 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3340 | } |
a7519a3c RH |
3341 | |
3342 | /* If the literal instruction is no longer needed (it may have been | |
3343 | reused. We can eliminate it. */ | |
3344 | /* ??? For now, I don't want to deal with compacting the section, | |
3345 | so just nop it out. */ | |
3346 | if (!lit_reused) | |
252b5132 | 3347 | { |
a7519a3c RH |
3348 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3349 | info->changed_relocs = TRUE; | |
252b5132 | 3350 | |
a7519a3c RH |
3351 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, |
3352 | info->contents + irel->r_offset); | |
3353 | info->changed_contents = TRUE; | |
3354 | } | |
252b5132 | 3355 | |
a7519a3c RH |
3356 | return TRUE; |
3357 | } | |
3358 | else | |
3359 | return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL); | |
252b5132 RH |
3360 | } |
3361 | ||
b34976b6 | 3362 | static bfd_boolean |
a7519a3c RH |
3363 | elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval, |
3364 | Elf_Internal_Rela *irel, bfd_boolean is_gd) | |
f44f99a5 | 3365 | { |
a7519a3c RH |
3366 | bfd_byte *pos[5]; |
3367 | unsigned int insn; | |
3368 | Elf_Internal_Rela *gpdisp, *hint; | |
3369 | bfd_boolean dynamic, use_gottprel, pos1_unusable; | |
3370 | unsigned long new_symndx; | |
f44f99a5 | 3371 | |
a7519a3c | 3372 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); |
f44f99a5 | 3373 | |
a7519a3c RH |
3374 | /* If a TLS symbol is accessed using IE at least once, there is no point |
3375 | to use dynamic model for it. */ | |
3376 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
3377 | ; | |
f44f99a5 | 3378 | |
a7519a3c RH |
3379 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, |
3380 | then we might as well relax to IE. */ | |
3381 | else if (info->link_info->shared && !dynamic | |
3382 | && (info->link_info->flags & DF_STATIC_TLS)) | |
3383 | ; | |
f44f99a5 | 3384 | |
a7519a3c RH |
3385 | /* Otherwise we must be building an executable to do anything. */ |
3386 | else if (info->link_info->shared) | |
3387 | return TRUE; | |
f44f99a5 | 3388 | |
a7519a3c RH |
3389 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and |
3390 | the matching LITUSE_TLS relocations. */ | |
3391 | if (irel + 2 >= info->relend) | |
3392 | return TRUE; | |
3393 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL | |
3394 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
3395 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
3396 | return TRUE; | |
f44f99a5 | 3397 | |
a7519a3c RH |
3398 | /* There must be a GPDISP relocation positioned immediately after the |
3399 | LITUSE relocation. */ | |
3400 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
3401 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
3402 | if (!gpdisp) | |
b34976b6 | 3403 | return TRUE; |
f44f99a5 | 3404 | |
a7519a3c RH |
3405 | pos[0] = info->contents + irel[0].r_offset; |
3406 | pos[1] = info->contents + irel[1].r_offset; | |
3407 | pos[2] = info->contents + irel[2].r_offset; | |
3408 | pos[3] = info->contents + gpdisp->r_offset; | |
3409 | pos[4] = pos[3] + gpdisp->r_addend; | |
3410 | pos1_unusable = FALSE; | |
f44f99a5 | 3411 | |
a7519a3c RH |
3412 | /* Generally, the positions are not allowed to be out of order, lest the |
3413 | modified insn sequence have different register lifetimes. We can make | |
3414 | an exception when pos 1 is adjacent to pos 0. */ | |
3415 | if (pos[1] + 4 == pos[0]) | |
f44f99a5 | 3416 | { |
a7519a3c RH |
3417 | bfd_byte *tmp = pos[0]; |
3418 | pos[0] = pos[1]; | |
3419 | pos[1] = tmp; | |
f44f99a5 | 3420 | } |
a7519a3c RH |
3421 | else if (pos[1] < pos[0]) |
3422 | pos1_unusable = TRUE; | |
3423 | if (pos[1] >= pos[2] || pos[2] >= pos[3]) | |
3424 | return TRUE; | |
cc03ec80 | 3425 | |
a7519a3c RH |
3426 | /* Reduce the use count on the LITERAL relocation. Do this before we |
3427 | smash the symndx when we adjust the relocations below. */ | |
3428 | { | |
3429 | struct alpha_elf_got_entry *lit_gotent; | |
3430 | struct alpha_elf_link_hash_entry *lit_h; | |
3431 | unsigned long indx; | |
f44f99a5 | 3432 | |
a7519a3c RH |
3433 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); |
3434 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
3435 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
f44f99a5 | 3436 | |
a7519a3c RH |
3437 | while (lit_h->root.root.type == bfd_link_hash_indirect |
3438 | || lit_h->root.root.type == bfd_link_hash_warning) | |
3439 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
252b5132 | 3440 | |
a7519a3c RH |
3441 | for (lit_gotent = lit_h->got_entries; lit_gotent ; |
3442 | lit_gotent = lit_gotent->next) | |
3443 | if (lit_gotent->gotobj == info->gotobj | |
3444 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
3445 | && lit_gotent->addend == irel[1].r_addend) | |
3446 | break; | |
3447 | BFD_ASSERT (lit_gotent); | |
252b5132 | 3448 | |
a7519a3c RH |
3449 | if (--lit_gotent->use_count == 0) |
3450 | { | |
3451 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
3452 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3453 | } | |
3454 | } | |
252b5132 | 3455 | |
a7519a3c | 3456 | /* Change |
252b5132 | 3457 | |
a7519a3c RH |
3458 | lda $16,x($gp) !tlsgd!1 |
3459 | ldq $27,__tls_get_addr($gp) !literal!1 | |
3460 | jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 | |
3461 | ldah $29,0($26) !gpdisp!2 | |
3462 | lda $29,0($29) !gpdisp!2 | |
3463 | to | |
3464 | ldq $16,x($gp) !gottprel | |
3465 | unop | |
3466 | call_pal rduniq | |
3467 | addq $16,$0,$0 | |
3468 | unop | |
3469 | or the first pair to | |
3470 | lda $16,x($gp) !tprel | |
3471 | unop | |
3472 | or | |
3473 | ldah $16,x($gp) !tprelhi | |
3474 | lda $16,x($16) !tprello | |
3475 | ||
3476 | as appropriate. */ | |
3477 | ||
3478 | use_gottprel = FALSE; | |
3479 | new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : 0; | |
3480 | switch (!dynamic && !info->link_info->shared) | |
252b5132 | 3481 | { |
a7519a3c RH |
3482 | case 1: |
3483 | { | |
3484 | bfd_vma tp_base; | |
3485 | bfd_signed_vma disp; | |
252b5132 | 3486 | |
a7519a3c RH |
3487 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
3488 | tp_base = alpha_get_tprel_base (info->link_info); | |
3489 | disp = symval - tp_base; | |
252b5132 | 3490 | |
a7519a3c RH |
3491 | if (disp >= -0x8000 && disp < 0x8000) |
3492 | { | |
3493 | insn = (OP_LDA << 26) | (16 << 21) | (31 << 16); | |
3494 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3495 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3765b1be | 3496 | |
a7519a3c RH |
3497 | irel[0].r_offset = pos[0] - info->contents; |
3498 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); | |
3499 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3500 | break; | |
3501 | } | |
3502 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
3503 | && disp < (bfd_signed_vma) 0x7fff8000 | |
3504 | && !pos1_unusable) | |
3505 | { | |
3506 | insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16); | |
3507 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3508 | insn = (OP_LDA << 26) | (16 << 21) | (16 << 16); | |
3509 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); | |
3765b1be | 3510 | |
a7519a3c RH |
3511 | irel[0].r_offset = pos[0] - info->contents; |
3512 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); | |
3513 | irel[1].r_offset = pos[1] - info->contents; | |
3514 | irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); | |
3515 | break; | |
3516 | } | |
3517 | } | |
3518 | /* FALLTHRU */ | |
3765b1be | 3519 | |
3765b1be | 3520 | default: |
a7519a3c RH |
3521 | use_gottprel = TRUE; |
3522 | ||
3523 | insn = (OP_LDQ << 26) | (16 << 21) | (29 << 16); | |
3524 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
3525 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3526 | ||
3527 | irel[0].r_offset = pos[0] - info->contents; | |
3528 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); | |
3529 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3530 | break; | |
3765b1be | 3531 | } |
3765b1be | 3532 | |
a7519a3c | 3533 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); |
252b5132 | 3534 | |
a7519a3c RH |
3535 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); |
3536 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
3765b1be | 3537 | |
a7519a3c | 3538 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); |
e92d460e | 3539 | |
a7519a3c RH |
3540 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3541 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3542 | |
a7519a3c RH |
3543 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, |
3544 | irel[2].r_offset, R_ALPHA_HINT); | |
3545 | if (hint) | |
3546 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3547 | |
a7519a3c RH |
3548 | info->changed_contents = TRUE; |
3549 | info->changed_relocs = TRUE; | |
d6ad34f6 | 3550 | |
a7519a3c RH |
3551 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ |
3552 | if (--info->gotent->use_count == 0) | |
3765b1be | 3553 | { |
a7519a3c RH |
3554 | int sz = alpha_got_entry_size (info->gotent->reloc_type); |
3555 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3556 | if (!info->h) | |
3557 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
3765b1be | 3558 | } |
252b5132 | 3559 | |
a7519a3c RH |
3560 | /* If we've switched to a GOTTPREL relocation, increment the reference |
3561 | count on that got entry. */ | |
3562 | if (use_gottprel) | |
f44f99a5 | 3563 | { |
a7519a3c | 3564 | struct alpha_elf_got_entry *tprel_gotent; |
f44f99a5 | 3565 | |
a7519a3c RH |
3566 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; |
3567 | tprel_gotent = tprel_gotent->next) | |
3568 | if (tprel_gotent->gotobj == info->gotobj | |
3569 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
3570 | && tprel_gotent->addend == irel->r_addend) | |
3571 | break; | |
3572 | if (tprel_gotent) | |
3573 | tprel_gotent->use_count++; | |
3574 | else | |
f44f99a5 | 3575 | { |
a7519a3c RH |
3576 | if (info->gotent->use_count == 0) |
3577 | tprel_gotent = info->gotent; | |
3578 | else | |
3579 | { | |
3580 | tprel_gotent = (struct alpha_elf_got_entry *) | |
3581 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
3582 | if (!tprel_gotent) | |
3583 | return FALSE; | |
f44f99a5 | 3584 | |
a7519a3c RH |
3585 | tprel_gotent->next = *info->first_gotent; |
3586 | *info->first_gotent = tprel_gotent; | |
f44f99a5 | 3587 | |
a7519a3c RH |
3588 | tprel_gotent->gotobj = info->gotobj; |
3589 | tprel_gotent->addend = irel->r_addend; | |
3590 | tprel_gotent->got_offset = -1; | |
3591 | tprel_gotent->reloc_done = 0; | |
3592 | tprel_gotent->reloc_xlated = 0; | |
3593 | } | |
f44f99a5 | 3594 | |
a7519a3c RH |
3595 | tprel_gotent->use_count = 1; |
3596 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
3597 | } | |
f44f99a5 | 3598 | } |
f44f99a5 | 3599 | |
b34976b6 | 3600 | return TRUE; |
f44f99a5 RH |
3601 | } |
3602 | ||
b34976b6 | 3603 | static bfd_boolean |
a7519a3c RH |
3604 | elf64_alpha_relax_section (bfd *abfd, asection *sec, |
3605 | struct bfd_link_info *link_info, bfd_boolean *again) | |
f44f99a5 | 3606 | { |
a7519a3c RH |
3607 | Elf_Internal_Shdr *symtab_hdr; |
3608 | Elf_Internal_Rela *internal_relocs; | |
3609 | Elf_Internal_Rela *irel, *irelend; | |
3610 | Elf_Internal_Sym *isymbuf = NULL; | |
3611 | struct alpha_elf_got_entry **local_got_entries; | |
3612 | struct alpha_relax_info info; | |
f44f99a5 | 3613 | |
a7519a3c RH |
3614 | /* We are not currently changing any sizes, so only one pass. */ |
3615 | *again = FALSE; | |
f44f99a5 | 3616 | |
a7519a3c RH |
3617 | if (link_info->relocatable |
3618 | || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3619 | != (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3620 | || sec->reloc_count == 0) | |
d6ad34f6 RH |
3621 | return TRUE; |
3622 | ||
a7519a3c RH |
3623 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3624 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
252b5132 | 3625 | |
a7519a3c RH |
3626 | /* Load the relocations for this section. */ |
3627 | internal_relocs = (_bfd_elf_link_read_relocs | |
3628 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
3629 | link_info->keep_memory)); | |
3630 | if (internal_relocs == NULL) | |
3631 | return FALSE; | |
252b5132 | 3632 | |
a7519a3c RH |
3633 | memset(&info, 0, sizeof (info)); |
3634 | info.abfd = abfd; | |
3635 | info.sec = sec; | |
3636 | info.link_info = link_info; | |
3637 | info.symtab_hdr = symtab_hdr; | |
3638 | info.relocs = internal_relocs; | |
3639 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
3640 | ||
3641 | /* Find the GP for this object. Do not store the result back via | |
3642 | _bfd_set_gp_value, since this could change again before final. */ | |
3643 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; | |
3644 | if (info.gotobj) | |
3765b1be | 3645 | { |
a7519a3c RH |
3646 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; |
3647 | info.gp = (sgot->output_section->vma | |
3648 | + sgot->output_offset | |
3649 | + 0x8000); | |
252b5132 RH |
3650 | } |
3651 | ||
a7519a3c RH |
3652 | /* Get the section contents. */ |
3653 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3654 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
3655 | else | |
3656 | { | |
3657 | if (!bfd_malloc_and_get_section (abfd, sec, &info.contents)) | |
3658 | goto error_return; | |
3659 | } | |
252b5132 | 3660 | |
a7519a3c RH |
3661 | for (irel = internal_relocs; irel < irelend; irel++) |
3662 | { | |
3663 | bfd_vma symval; | |
3664 | struct alpha_elf_got_entry *gotent; | |
3665 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
3666 | unsigned long r_symndx = ELF64_R_SYM (irel->r_info); | |
3667 | ||
3668 | /* Early exit for unhandled or unrelaxable relocations. */ | |
3669 | switch (r_type) | |
3670 | { | |
3671 | case R_ALPHA_LITERAL: | |
3672 | case R_ALPHA_GPRELHIGH: | |
3673 | case R_ALPHA_GPRELLOW: | |
3674 | case R_ALPHA_GOTDTPREL: | |
3675 | case R_ALPHA_GOTTPREL: | |
3676 | case R_ALPHA_TLSGD: | |
3677 | break; | |
3678 | ||
3679 | case R_ALPHA_TLSLDM: | |
3680 | /* The symbol for a TLSLDM reloc is ignored. Collapse the | |
3681 | reloc to the 0 symbol so that they all match. */ | |
3682 | r_symndx = 0; | |
3683 | break; | |
3684 | ||
3685 | default: | |
3686 | continue; | |
3687 | } | |
3688 | ||
3689 | /* Get the value of the symbol referred to by the reloc. */ | |
3690 | if (r_symndx < symtab_hdr->sh_info) | |
3691 | { | |
3692 | /* A local symbol. */ | |
3693 | Elf_Internal_Sym *isym; | |
3694 | ||
3695 | /* Read this BFD's local symbols. */ | |
3696 | if (isymbuf == NULL) | |
3697 | { | |
3698 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3699 | if (isymbuf == NULL) | |
3700 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
3701 | symtab_hdr->sh_info, 0, | |
3702 | NULL, NULL, NULL); | |
3703 | if (isymbuf == NULL) | |
3704 | goto error_return; | |
3705 | } | |
252b5132 | 3706 | |
a7519a3c | 3707 | isym = isymbuf + r_symndx; |
252b5132 | 3708 | |
a7519a3c RH |
3709 | /* Given the symbol for a TLSLDM reloc is ignored, this also |
3710 | means forcing the symbol value to the tp base. */ | |
3711 | if (r_type == R_ALPHA_TLSLDM) | |
3712 | { | |
3713 | info.tsec = bfd_abs_section_ptr; | |
3714 | symval = alpha_get_tprel_base (info.link_info); | |
3715 | } | |
3716 | else | |
3717 | { | |
3718 | symval = isym->st_value; | |
3719 | if (isym->st_shndx == SHN_UNDEF) | |
3720 | continue; | |
3721 | else if (isym->st_shndx == SHN_ABS) | |
3722 | info.tsec = bfd_abs_section_ptr; | |
3723 | else if (isym->st_shndx == SHN_COMMON) | |
3724 | info.tsec = bfd_com_section_ptr; | |
3725 | else | |
3726 | info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3727 | } | |
252b5132 | 3728 | |
a7519a3c RH |
3729 | info.h = NULL; |
3730 | info.other = isym->st_other; | |
3731 | if (local_got_entries) | |
3732 | info.first_gotent = &local_got_entries[r_symndx]; | |
3733 | else | |
3734 | { | |
3735 | info.first_gotent = &info.gotent; | |
3736 | info.gotent = NULL; | |
3737 | } | |
252b5132 | 3738 | } |
a7519a3c RH |
3739 | else |
3740 | { | |
3741 | unsigned long indx; | |
3742 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 3743 | |
a7519a3c RH |
3744 | indx = r_symndx - symtab_hdr->sh_info; |
3745 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
3746 | BFD_ASSERT (h != NULL); | |
252b5132 | 3747 | |
a7519a3c RH |
3748 | while (h->root.root.type == bfd_link_hash_indirect |
3749 | || h->root.root.type == bfd_link_hash_warning) | |
3750 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 3751 | |
a7519a3c RH |
3752 | /* If the symbol is undefined, we can't do anything with it. */ |
3753 | if (h->root.root.type == bfd_link_hash_undefined) | |
3754 | continue; | |
252b5132 | 3755 | |
a7519a3c RH |
3756 | /* If the symbol isn't defined in the current module, |
3757 | again we can't do anything. */ | |
3758 | if (h->root.root.type == bfd_link_hash_undefweak) | |
3759 | { | |
3760 | info.tsec = bfd_abs_section_ptr; | |
3761 | symval = 0; | |
3762 | } | |
3763 | else if (!h->root.def_regular) | |
3764 | { | |
3765 | /* Except for TLSGD relocs, which can sometimes be | |
3766 | relaxed to GOTTPREL relocs. */ | |
3767 | if (r_type != R_ALPHA_TLSGD) | |
3768 | continue; | |
3769 | info.tsec = bfd_abs_section_ptr; | |
3770 | symval = 0; | |
3771 | } | |
3772 | else | |
3773 | { | |
3774 | info.tsec = h->root.root.u.def.section; | |
3775 | symval = h->root.root.u.def.value; | |
3776 | } | |
252b5132 | 3777 | |
a7519a3c RH |
3778 | info.h = h; |
3779 | info.other = h->root.other; | |
3780 | info.first_gotent = &h->got_entries; | |
3781 | } | |
252b5132 | 3782 | |
a7519a3c RH |
3783 | /* Search for the got entry to be used by this relocation. */ |
3784 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) | |
3785 | if (gotent->gotobj == info.gotobj | |
3786 | && gotent->reloc_type == r_type | |
3787 | && gotent->addend == irel->r_addend) | |
3788 | break; | |
3789 | info.gotent = gotent; | |
252b5132 | 3790 | |
a7519a3c RH |
3791 | symval += info.tsec->output_section->vma + info.tsec->output_offset; |
3792 | symval += irel->r_addend; | |
252b5132 | 3793 | |
a7519a3c | 3794 | switch (r_type) |
252b5132 | 3795 | { |
a7519a3c RH |
3796 | case R_ALPHA_LITERAL: |
3797 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 3798 | |
a7519a3c RH |
3799 | /* If there exist LITUSE relocations immediately following, this |
3800 | opens up all sorts of interesting optimizations, because we | |
3801 | now know every location that this address load is used. */ | |
3802 | if (irel+1 < irelend | |
3803 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
252b5132 | 3804 | { |
a7519a3c RH |
3805 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) |
3806 | goto error_return; | |
252b5132 | 3807 | } |
a7519a3c RH |
3808 | else |
3809 | { | |
3810 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3811 | goto error_return; | |
3812 | } | |
3813 | break; | |
252b5132 | 3814 | |
a7519a3c RH |
3815 | case R_ALPHA_GOTDTPREL: |
3816 | case R_ALPHA_GOTTPREL: | |
3817 | BFD_ASSERT(info.gotent != NULL); | |
3818 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3819 | goto error_return; | |
3820 | break; | |
3821 | ||
3822 | case R_ALPHA_TLSGD: | |
3823 | case R_ALPHA_TLSLDM: | |
3824 | BFD_ASSERT(info.gotent != NULL); | |
3825 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
3826 | r_type == R_ALPHA_TLSGD)) | |
3827 | goto error_return; | |
3828 | break; | |
252b5132 RH |
3829 | } |
3830 | } | |
3831 | ||
a7519a3c RH |
3832 | if (!elf64_alpha_size_plt_section (link_info)) |
3833 | return FALSE; | |
3834 | if (!elf64_alpha_size_got_sections (link_info)) | |
3835 | return FALSE; | |
3836 | if (!elf64_alpha_size_rela_got_section (link_info)) | |
3837 | return FALSE; | |
dc810e39 | 3838 | |
a7519a3c RH |
3839 | if (isymbuf != NULL |
3840 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3841 | { | |
3842 | if (!link_info->keep_memory) | |
3843 | free (isymbuf); | |
3844 | else | |
252b5132 | 3845 | { |
a7519a3c RH |
3846 | /* Cache the symbols for elf_link_input_bfd. */ |
3847 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3848 | } |
a7519a3c | 3849 | } |
252b5132 | 3850 | |
a7519a3c RH |
3851 | if (info.contents != NULL |
3852 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3853 | { | |
3854 | if (!info.changed_contents && !link_info->keep_memory) | |
3855 | free (info.contents); | |
3856 | else | |
252b5132 | 3857 | { |
a7519a3c RH |
3858 | /* Cache the section contents for elf_link_input_bfd. */ |
3859 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
252b5132 | 3860 | } |
a7519a3c | 3861 | } |
252b5132 | 3862 | |
a7519a3c RH |
3863 | if (elf_section_data (sec)->relocs != internal_relocs) |
3864 | { | |
3865 | if (!info.changed_relocs) | |
3866 | free (internal_relocs); | |
3867 | else | |
3868 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3869 | } |
a7519a3c RH |
3870 | |
3871 | *again = info.changed_contents || info.changed_relocs; | |
252b5132 | 3872 | |
b34976b6 | 3873 | return TRUE; |
252b5132 | 3874 | |
a7519a3c RH |
3875 | error_return: |
3876 | if (isymbuf != NULL | |
3877 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3878 | free (isymbuf); | |
3879 | if (info.contents != NULL | |
3880 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
3881 | free (info.contents); | |
3882 | if (internal_relocs != NULL | |
3883 | && elf_section_data (sec)->relocs != internal_relocs) | |
3884 | free (internal_relocs); | |
3885 | return FALSE; | |
3886 | } | |
3887 | \f | |
1bbc9cec RH |
3888 | /* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) |
3889 | into the next available slot in SREL. */ | |
3890 | ||
3891 | static void | |
a7519a3c RH |
3892 | elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info, |
3893 | asection *sec, asection *srel, bfd_vma offset, | |
3894 | long dynindx, long rtype, bfd_vma addend) | |
1bbc9cec RH |
3895 | { |
3896 | Elf_Internal_Rela outrel; | |
3897 | bfd_byte *loc; | |
3898 | ||
3899 | BFD_ASSERT (srel != NULL); | |
3900 | ||
3901 | outrel.r_info = ELF64_R_INFO (dynindx, rtype); | |
3902 | outrel.r_addend = addend; | |
3903 | ||
3904 | offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
3905 | if ((offset | 1) != (bfd_vma) -1) | |
3906 | outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; | |
3907 | else | |
3908 | memset (&outrel, 0, sizeof (outrel)); | |
3909 | ||
3910 | loc = srel->contents; | |
3911 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
3912 | bfd_elf64_swap_reloca_out (abfd, &outrel, loc); | |
eea6121a | 3913 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size); |
1bbc9cec RH |
3914 | } |
3915 | ||
4a67a098 RH |
3916 | /* Relocate an Alpha ELF section for a relocatable link. |
3917 | ||
3918 | We don't have to change anything unless the reloc is against a section | |
3919 | symbol, in which case we have to adjust according to where the section | |
3920 | symbol winds up in the output section. */ | |
3921 | ||
b34976b6 | 3922 | static bfd_boolean |
a7519a3c RH |
3923 | elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED, |
3924 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3925 | bfd *input_bfd, asection *input_section, | |
3926 | bfd_byte *contents ATTRIBUTE_UNUSED, | |
3927 | Elf_Internal_Rela *relocs, | |
3928 | Elf_Internal_Sym *local_syms, | |
3929 | asection **local_sections) | |
4a67a098 RH |
3930 | { |
3931 | unsigned long symtab_hdr_sh_info; | |
3932 | Elf_Internal_Rela *rel; | |
3933 | Elf_Internal_Rela *relend; | |
b34976b6 | 3934 | bfd_boolean ret_val = TRUE; |
4a67a098 RH |
3935 | |
3936 | symtab_hdr_sh_info = elf_tdata (input_bfd)->symtab_hdr.sh_info; | |
3937 | ||
3938 | relend = relocs + input_section->reloc_count; | |
3939 | for (rel = relocs; rel < relend; rel++) | |
3940 | { | |
3941 | unsigned long r_symndx; | |
3942 | Elf_Internal_Sym *sym; | |
3943 | asection *sec; | |
3944 | unsigned long r_type; | |
3945 | ||
3946 | r_type = ELF64_R_TYPE(rel->r_info); | |
3947 | if (r_type >= R_ALPHA_max) | |
3948 | { | |
3949 | (*_bfd_error_handler) | |
d003868e AM |
3950 | (_("%B: unknown relocation type %d"), |
3951 | input_bfd, (int) r_type); | |
4a67a098 | 3952 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3953 | ret_val = FALSE; |
4a67a098 RH |
3954 | continue; |
3955 | } | |
3956 | ||
3957 | r_symndx = ELF64_R_SYM(rel->r_info); | |
3958 | ||
3959 | /* The symbol associated with GPDISP and LITUSE is | |
3960 | immaterial. Only the addend is significant. */ | |
3961 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
3962 | continue; | |
3963 | ||
3964 | if (r_symndx < symtab_hdr_sh_info) | |
3965 | { | |
3966 | sym = local_syms + r_symndx; | |
3967 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) | |
3968 | { | |
3969 | sec = local_sections[r_symndx]; | |
3970 | rel->r_addend += sec->output_offset + sym->st_value; | |
3971 | } | |
3972 | } | |
3973 | } | |
3974 | ||
3975 | return ret_val; | |
3976 | } | |
3977 | ||
252b5132 RH |
3978 | /* Relocate an Alpha ELF section. */ |
3979 | ||
b34976b6 | 3980 | static bfd_boolean |
a7519a3c RH |
3981 | elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
3982 | bfd *input_bfd, asection *input_section, | |
3983 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
3984 | Elf_Internal_Sym *local_syms, | |
3985 | asection **local_sections) | |
252b5132 | 3986 | { |
4a67a098 | 3987 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
3988 | Elf_Internal_Rela *rel; |
3989 | Elf_Internal_Rela *relend; | |
4a67a098 RH |
3990 | asection *sgot, *srel, *srelgot; |
3991 | bfd *dynobj, *gotobj; | |
3992 | bfd_vma gp, tp_base, dtp_base; | |
3993 | struct alpha_elf_got_entry **local_got_entries; | |
b34976b6 | 3994 | bfd_boolean ret_val; |
252b5132 | 3995 | |
4a67a098 | 3996 | /* Handle relocatable links with a smaller loop. */ |
1049f94e | 3997 | if (info->relocatable) |
4a67a098 RH |
3998 | return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, |
3999 | input_section, contents, relocs, | |
4000 | local_syms, local_sections); | |
4001 | ||
4002 | /* This is a final link. */ | |
4003 | ||
b34976b6 | 4004 | ret_val = TRUE; |
252b5132 | 4005 | |
4a67a098 | 4006 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3765b1be | 4007 | |
4a67a098 RH |
4008 | dynobj = elf_hash_table (info)->dynobj; |
4009 | if (dynobj) | |
4010 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4011 | else | |
4012 | srelgot = NULL; | |
4013 | ||
3241278a RH |
4014 | if (input_section->flags & SEC_ALLOC) |
4015 | { | |
4016 | const char *section_name; | |
4017 | section_name = (bfd_elf_string_from_elf_section | |
4018 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
4019 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
4020 | BFD_ASSERT(section_name != NULL); | |
4021 | srel = bfd_get_section_by_name (dynobj, section_name); | |
4022 | } | |
4023 | else | |
4024 | srel = NULL; | |
3765b1be | 4025 | |
4a67a098 RH |
4026 | /* Find the gp value for this input bfd. */ |
4027 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
4028 | if (gotobj) | |
4029 | { | |
4030 | sgot = alpha_elf_tdata (gotobj)->got; | |
4031 | gp = _bfd_get_gp_value (gotobj); | |
4032 | if (gp == 0) | |
252b5132 | 4033 | { |
4a67a098 RH |
4034 | gp = (sgot->output_section->vma |
4035 | + sgot->output_offset | |
4036 | + 0x8000); | |
4037 | _bfd_set_gp_value (gotobj, gp); | |
4038 | } | |
4039 | } | |
4040 | else | |
4041 | { | |
4042 | sgot = NULL; | |
4043 | gp = 0; | |
4044 | } | |
3765b1be | 4045 | |
4a67a098 RH |
4046 | local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; |
4047 | ||
e1918d23 | 4048 | if (elf_hash_table (info)->tls_sec != NULL) |
4a67a098 | 4049 | { |
e1918d23 AM |
4050 | dtp_base = alpha_get_dtprel_base (info); |
4051 | tp_base = alpha_get_tprel_base (info); | |
252b5132 | 4052 | } |
4a67a098 RH |
4053 | else |
4054 | dtp_base = tp_base = 0; | |
252b5132 | 4055 | |
252b5132 | 4056 | relend = relocs + input_section->reloc_count; |
4a67a098 | 4057 | for (rel = relocs; rel < relend; rel++) |
252b5132 | 4058 | { |
4a67a098 | 4059 | struct alpha_elf_link_hash_entry *h = NULL; |
3765b1be RH |
4060 | struct alpha_elf_got_entry *gotent; |
4061 | bfd_reloc_status_type r; | |
252b5132 RH |
4062 | reloc_howto_type *howto; |
4063 | unsigned long r_symndx; | |
4a67a098 RH |
4064 | Elf_Internal_Sym *sym = NULL; |
4065 | asection *sec = NULL; | |
3765b1be | 4066 | bfd_vma value; |
dc810e39 | 4067 | bfd_vma addend; |
b34976b6 AM |
4068 | bfd_boolean dynamic_symbol_p; |
4069 | bfd_boolean undef_weak_ref = FALSE; | |
3765b1be | 4070 | unsigned long r_type; |
252b5132 RH |
4071 | |
4072 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4073 | if (r_type >= R_ALPHA_max) |
252b5132 | 4074 | { |
3765b1be | 4075 | (*_bfd_error_handler) |
d003868e AM |
4076 | (_("%B: unknown relocation type %d"), |
4077 | input_bfd, (int) r_type); | |
252b5132 | 4078 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4079 | ret_val = FALSE; |
3765b1be | 4080 | continue; |
252b5132 | 4081 | } |
252b5132 | 4082 | |
3765b1be | 4083 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4084 | r_symndx = ELF64_R_SYM(rel->r_info); |
4085 | ||
cc03ec80 RH |
4086 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
4087 | reloc to the 0 symbol so that they all match. */ | |
4088 | if (r_type == R_ALPHA_TLSLDM) | |
4089 | r_symndx = 0; | |
4090 | ||
252b5132 RH |
4091 | if (r_symndx < symtab_hdr->sh_info) |
4092 | { | |
8517fae7 | 4093 | asection *msec; |
252b5132 RH |
4094 | sym = local_syms + r_symndx; |
4095 | sec = local_sections[r_symndx]; | |
8517fae7 AM |
4096 | msec = sec; |
4097 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3765b1be | 4098 | |
cc03ec80 RH |
4099 | /* If this is a tp-relative relocation against sym 0, |
4100 | this is hackery from relax_section. Force the value to | |
4101 | be the tls base. */ | |
4102 | if (r_symndx == 0 | |
4103 | && (r_type == R_ALPHA_TLSLDM | |
4104 | || r_type == R_ALPHA_GOTTPREL | |
4105 | || r_type == R_ALPHA_TPREL64 | |
4106 | || r_type == R_ALPHA_TPRELHI | |
4107 | || r_type == R_ALPHA_TPRELLO | |
4108 | || r_type == R_ALPHA_TPREL16)) | |
4109 | value = tp_base; | |
4110 | ||
4a67a098 RH |
4111 | if (local_got_entries) |
4112 | gotent = local_got_entries[r_symndx]; | |
4113 | else | |
4114 | gotent = NULL; | |
3765b1be RH |
4115 | |
4116 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4117 | unless it has been done already. */ | |
4118 | if ((sec->flags & SEC_MERGE) | |
048d873d | 4119 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 4120 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE |
048d873d RH |
4121 | && gotent |
4122 | && !gotent->reloc_xlated) | |
3765b1be RH |
4123 | { |
4124 | struct alpha_elf_got_entry *ent; | |
3765b1be RH |
4125 | |
4126 | for (ent = gotent; ent; ent = ent->next) | |
4127 | { | |
4128 | ent->reloc_xlated = 1; | |
4129 | if (ent->use_count == 0) | |
4130 | continue; | |
4131 | msec = sec; | |
4132 | ent->addend = | |
4133 | _bfd_merged_section_offset (output_bfd, &msec, | |
4134 | elf_section_data (sec)-> | |
4135 | sec_info, | |
753731ee | 4136 | sym->st_value + ent->addend); |
3765b1be RH |
4137 | ent->addend -= sym->st_value; |
4138 | ent->addend += msec->output_section->vma | |
4139 | + msec->output_offset | |
4140 | - sec->output_section->vma | |
4141 | - sec->output_offset; | |
4142 | } | |
4143 | } | |
4144 | ||
b34976b6 | 4145 | dynamic_symbol_p = FALSE; |
252b5132 RH |
4146 | } |
4147 | else | |
4148 | { | |
560e09e9 NC |
4149 | bfd_boolean warned; |
4150 | bfd_boolean unresolved_reloc; | |
4151 | struct elf_link_hash_entry *hh; | |
b2a8e766 AM |
4152 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
4153 | ||
4154 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4155 | r_symndx, symtab_hdr, sym_hashes, | |
4156 | hh, sec, value, | |
4157 | unresolved_reloc, warned); | |
560e09e9 NC |
4158 | |
4159 | if (warned) | |
4160 | continue; | |
252b5132 | 4161 | |
560e09e9 NC |
4162 | if (value == 0 |
4163 | && ! unresolved_reloc | |
4164 | && hh->root.type == bfd_link_hash_undefweak) | |
b34976b6 | 4165 | undef_weak_ref = TRUE; |
3765b1be | 4166 | |
560e09e9 | 4167 | h = (struct alpha_elf_link_hash_entry *) hh; |
3765b1be RH |
4168 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); |
4169 | gotent = h->got_entries; | |
252b5132 | 4170 | } |
3765b1be | 4171 | |
252b5132 | 4172 | addend = rel->r_addend; |
3765b1be RH |
4173 | value += addend; |
4174 | ||
4175 | /* Search for the proper got entry. */ | |
4176 | for (; gotent ; gotent = gotent->next) | |
4177 | if (gotent->gotobj == gotobj | |
4178 | && gotent->reloc_type == r_type | |
4179 | && gotent->addend == addend) | |
4180 | break; | |
252b5132 RH |
4181 | |
4182 | switch (r_type) | |
4183 | { | |
4184 | case R_ALPHA_GPDISP: | |
4185 | { | |
4186 | bfd_byte *p_ldah, *p_lda; | |
4187 | ||
4188 | BFD_ASSERT(gp != 0); | |
4189 | ||
3765b1be RH |
4190 | value = (input_section->output_section->vma |
4191 | + input_section->output_offset | |
4192 | + rel->r_offset); | |
252b5132 | 4193 | |
3765b1be | 4194 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4195 | p_lda = p_ldah + rel->r_addend; |
4196 | ||
3765b1be | 4197 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4198 | p_ldah, p_lda); |
4199 | } | |
4200 | break; | |
4201 | ||
252b5132 | 4202 | case R_ALPHA_LITERAL: |
3765b1be RH |
4203 | BFD_ASSERT(sgot != NULL); |
4204 | BFD_ASSERT(gp != 0); | |
4205 | BFD_ASSERT(gotent != NULL); | |
4206 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4207 | |
3765b1be RH |
4208 | if (!gotent->reloc_done) |
4209 | { | |
4210 | gotent->reloc_done = 1; | |
252b5132 | 4211 | |
3765b1be RH |
4212 | bfd_put_64 (output_bfd, value, |
4213 | sgot->contents + gotent->got_offset); | |
252b5132 | 4214 | |
3765b1be RH |
4215 | /* If the symbol has been forced local, output a |
4216 | RELATIVE reloc, otherwise it will be handled in | |
4217 | finish_dynamic_symbol. */ | |
d6ad34f6 | 4218 | if (info->shared && !dynamic_symbol_p && !undef_weak_ref) |
1bbc9cec RH |
4219 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4220 | gotent->got_offset, 0, | |
4221 | R_ALPHA_RELATIVE, value); | |
3765b1be | 4222 | } |
252b5132 | 4223 | |
3765b1be RH |
4224 | value = (sgot->output_section->vma |
4225 | + sgot->output_offset | |
4226 | + gotent->got_offset); | |
4227 | value -= gp; | |
252b5132 RH |
4228 | goto default_reloc; |
4229 | ||
4230 | case R_ALPHA_GPREL32: | |
ec1659c8 RH |
4231 | /* If the target section was a removed linkonce section, |
4232 | r_symndx will be zero. In this case, assume that the | |
4233 | switch will not be used, so don't fill it in. If we | |
4234 | do nothing here, we'll get relocation truncated messages, | |
4235 | due to the placement of the application above 4GB. */ | |
4236 | if (r_symndx == 0) | |
4237 | { | |
4238 | r = bfd_reloc_ok; | |
4239 | break; | |
4240 | } | |
4241 | /* FALLTHRU */ | |
4242 | ||
4243 | case R_ALPHA_GPREL16: | |
252b5132 | 4244 | case R_ALPHA_GPRELLOW: |
3765b1be | 4245 | if (dynamic_symbol_p) |
f16fbd61 RH |
4246 | { |
4247 | (*_bfd_error_handler) | |
d003868e AM |
4248 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4249 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4250 | ret_val = FALSE; |
f16fbd61 | 4251 | } |
252b5132 | 4252 | BFD_ASSERT(gp != 0); |
3765b1be | 4253 | value -= gp; |
252b5132 RH |
4254 | goto default_reloc; |
4255 | ||
4256 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4257 | if (dynamic_symbol_p) |
f16fbd61 RH |
4258 | { |
4259 | (*_bfd_error_handler) | |
d003868e AM |
4260 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4261 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4262 | ret_val = FALSE; |
f16fbd61 | 4263 | } |
252b5132 | 4264 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4265 | value -= gp; |
4266 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4267 | goto default_reloc; |
4268 | ||
252b5132 | 4269 | case R_ALPHA_HINT: |
f94952df RH |
4270 | /* A call to a dynamic symbol is definitely out of range of |
4271 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4272 | if (dynamic_symbol_p) |
f94952df RH |
4273 | { |
4274 | r = bfd_reloc_ok; | |
4275 | break; | |
4276 | } | |
3765b1be RH |
4277 | /* The regular PC-relative stuff measures from the start of |
4278 | the instruction rather than the end. */ | |
4279 | value -= 4; | |
4280 | goto default_reloc; | |
f94952df RH |
4281 | |
4282 | case R_ALPHA_BRADDR: | |
3765b1be RH |
4283 | if (dynamic_symbol_p) |
4284 | { | |
4285 | (*_bfd_error_handler) | |
d003868e AM |
4286 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4287 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4288 | ret_val = FALSE; |
3765b1be | 4289 | } |
252b5132 RH |
4290 | /* The regular PC-relative stuff measures from the start of |
4291 | the instruction rather than the end. */ | |
3765b1be | 4292 | value -= 4; |
252b5132 RH |
4293 | goto default_reloc; |
4294 | ||
7793f4d0 RH |
4295 | case R_ALPHA_BRSGP: |
4296 | { | |
4297 | int other; | |
4298 | const char *name; | |
4299 | ||
4300 | /* The regular PC-relative stuff measures from the start of | |
4301 | the instruction rather than the end. */ | |
3765b1be | 4302 | value -= 4; |
7793f4d0 | 4303 | |
ccf00ab6 RH |
4304 | /* The source and destination gp must be the same. Note that |
4305 | the source will always have an assigned gp, since we forced | |
4306 | one in check_relocs, but that the destination may not, as | |
cedb70c5 | 4307 | it might not have had any relocations at all. Also take |
ccf00ab6 RH |
4308 | care not to crash if H is an undefined symbol. */ |
4309 | if (h != NULL && sec != NULL | |
4310 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4311 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4312 | { | |
7793f4d0 | 4313 | (*_bfd_error_handler) |
d003868e AM |
4314 | (_("%B: change in gp: BRSGP %s"), |
4315 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4316 | ret_val = FALSE; |
7793f4d0 RH |
4317 | } |
4318 | ||
4319 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4320 | if (h != NULL) | |
4321 | other = h->root.other; | |
4322 | else | |
4323 | other = sym->st_other; | |
4324 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4325 | { | |
4326 | case STO_ALPHA_NOPV: | |
4327 | break; | |
4328 | case STO_ALPHA_STD_GPLOAD: | |
64e04ecd | 4329 | value += 8; |
7793f4d0 RH |
4330 | break; |
4331 | default: | |
4332 | if (h != NULL) | |
4333 | name = h->root.root.root.string; | |
4334 | else | |
4335 | { | |
4336 | name = (bfd_elf_string_from_elf_section | |
4337 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4338 | if (name == NULL) | |
4339 | name = _("<unknown>"); | |
4340 | else if (name[0] == 0) | |
4341 | name = bfd_section_name (input_bfd, sec); | |
4342 | } | |
4343 | (*_bfd_error_handler) | |
d003868e AM |
4344 | (_("%B: !samegp reloc against symbol without .prologue: %s"), |
4345 | input_bfd, name); | |
b34976b6 | 4346 | ret_val = FALSE; |
7793f4d0 RH |
4347 | break; |
4348 | } | |
4349 | ||
4350 | goto default_reloc; | |
4351 | } | |
4352 | ||
252b5132 RH |
4353 | case R_ALPHA_REFLONG: |
4354 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4355 | case R_ALPHA_DTPREL64: |
4356 | case R_ALPHA_TPREL64: | |
252b5132 | 4357 | { |
1bbc9cec RH |
4358 | long dynindx, dyntype = r_type; |
4359 | bfd_vma dynaddend; | |
252b5132 RH |
4360 | |
4361 | /* Careful here to remember RELATIVE relocations for global | |
4362 | variables for symbolic shared objects. */ | |
4363 | ||
3765b1be | 4364 | if (dynamic_symbol_p) |
252b5132 RH |
4365 | { |
4366 | BFD_ASSERT(h->root.dynindx != -1); | |
1bbc9cec RH |
4367 | dynindx = h->root.dynindx; |
4368 | dynaddend = addend; | |
3765b1be RH |
4369 | addend = 0, value = 0; |
4370 | } | |
4371 | else if (r_type == R_ALPHA_DTPREL64) | |
4372 | { | |
e1918d23 | 4373 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4374 | value -= dtp_base; |
4375 | goto default_reloc; | |
4376 | } | |
4377 | else if (r_type == R_ALPHA_TPREL64) | |
4378 | { | |
e1918d23 | 4379 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4380 | if (!info->shared) |
4381 | { | |
4382 | value -= tp_base; | |
4383 | goto default_reloc; | |
4384 | } | |
4385 | dynindx = 0; | |
4386 | dynaddend = value - dtp_base; | |
252b5132 | 4387 | } |
ec338859 AM |
4388 | else if (info->shared |
4389 | && r_symndx != 0 | |
d6ad34f6 RH |
4390 | && (input_section->flags & SEC_ALLOC) |
4391 | && !undef_weak_ref) | |
252b5132 | 4392 | { |
3765b1be RH |
4393 | if (r_type == R_ALPHA_REFLONG) |
4394 | { | |
4395 | (*_bfd_error_handler) | |
d003868e AM |
4396 | (_("%B: unhandled dynamic relocation against %s"), |
4397 | input_bfd, | |
3765b1be | 4398 | h->root.root.root.string); |
b34976b6 | 4399 | ret_val = FALSE; |
3765b1be | 4400 | } |
1bbc9cec RH |
4401 | dynindx = 0; |
4402 | dyntype = R_ALPHA_RELATIVE; | |
4403 | dynaddend = value; | |
252b5132 RH |
4404 | } |
4405 | else | |
4406 | goto default_reloc; | |
4407 | ||
3241278a RH |
4408 | if (input_section->flags & SEC_ALLOC) |
4409 | elf64_alpha_emit_dynrel (output_bfd, info, input_section, | |
4410 | srel, rel->r_offset, dynindx, | |
4411 | dyntype, dynaddend); | |
252b5132 RH |
4412 | } |
4413 | goto default_reloc; | |
4414 | ||
3765b1be | 4415 | case R_ALPHA_SREL16: |
84de6048 RH |
4416 | case R_ALPHA_SREL32: |
4417 | case R_ALPHA_SREL64: | |
3765b1be RH |
4418 | if (dynamic_symbol_p) |
4419 | { | |
4420 | (*_bfd_error_handler) | |
d003868e AM |
4421 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4422 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4423 | ret_val = FALSE; |
3765b1be | 4424 | } |
d6ad34f6 RH |
4425 | else if ((info->shared || info->pie) && undef_weak_ref) |
4426 | { | |
4427 | (*_bfd_error_handler) | |
4428 | (_("%B: pc-relative relocation against undefined weak symbol %s"), | |
4429 | input_bfd, h->root.root.root.string); | |
4430 | ret_val = FALSE; | |
4431 | } | |
4432 | ||
3765b1be | 4433 | |
84de6048 RH |
4434 | /* ??? .eh_frame references to discarded sections will be smashed |
4435 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4436 | NULL to be encoded as 0 in any format, so this works here. */ | |
4437 | if (r_symndx == 0) | |
4438 | howto = (elf64_alpha_howto_table | |
4439 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4440 | goto default_reloc; | |
4441 | ||
3765b1be RH |
4442 | case R_ALPHA_TLSLDM: |
4443 | /* Ignore the symbol for the relocation. The result is always | |
4444 | the current module. */ | |
4445 | dynamic_symbol_p = 0; | |
4446 | /* FALLTHRU */ | |
4447 | ||
4448 | case R_ALPHA_TLSGD: | |
4449 | if (!gotent->reloc_done) | |
4450 | { | |
4451 | gotent->reloc_done = 1; | |
4452 | ||
4453 | /* Note that the module index for the main program is 1. */ | |
4454 | bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p, | |
4455 | sgot->contents + gotent->got_offset); | |
4456 | ||
4457 | /* If the symbol has been forced local, output a | |
4458 | DTPMOD64 reloc, otherwise it will be handled in | |
4459 | finish_dynamic_symbol. */ | |
4460 | if (info->shared && !dynamic_symbol_p) | |
1bbc9cec RH |
4461 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4462 | gotent->got_offset, 0, | |
4463 | R_ALPHA_DTPMOD64, 0); | |
3765b1be RH |
4464 | |
4465 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4466 | value = 0; | |
4467 | else | |
4468 | { | |
e1918d23 | 4469 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4470 | value -= dtp_base; |
4471 | } | |
4472 | bfd_put_64 (output_bfd, value, | |
4473 | sgot->contents + gotent->got_offset + 8); | |
4474 | } | |
4475 | ||
4476 | value = (sgot->output_section->vma | |
4477 | + sgot->output_offset | |
4478 | + gotent->got_offset); | |
4479 | value -= gp; | |
4480 | goto default_reloc; | |
4481 | ||
4482 | case R_ALPHA_DTPRELHI: | |
4483 | case R_ALPHA_DTPRELLO: | |
4484 | case R_ALPHA_DTPREL16: | |
4485 | if (dynamic_symbol_p) | |
4486 | { | |
4487 | (*_bfd_error_handler) | |
d003868e AM |
4488 | (_("%B: dtp-relative relocation against dynamic symbol %s"), |
4489 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4490 | ret_val = FALSE; |
3765b1be | 4491 | } |
e1918d23 | 4492 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4493 | value -= dtp_base; |
9e756d64 RH |
4494 | if (r_type == R_ALPHA_DTPRELHI) |
4495 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4496 | goto default_reloc; |
4497 | ||
4498 | case R_ALPHA_TPRELHI: | |
4499 | case R_ALPHA_TPRELLO: | |
4500 | case R_ALPHA_TPREL16: | |
9e756d64 RH |
4501 | if (info->shared) |
4502 | { | |
4503 | (*_bfd_error_handler) | |
d003868e AM |
4504 | (_("%B: TLS local exec code cannot be linked into shared objects"), |
4505 | input_bfd); | |
b34976b6 | 4506 | ret_val = FALSE; |
9e756d64 RH |
4507 | } |
4508 | else if (dynamic_symbol_p) | |
3765b1be RH |
4509 | { |
4510 | (*_bfd_error_handler) | |
d003868e AM |
4511 | (_("%B: tp-relative relocation against dynamic symbol %s"), |
4512 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4513 | ret_val = FALSE; |
3765b1be | 4514 | } |
e1918d23 | 4515 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4516 | value -= tp_base; |
9e756d64 RH |
4517 | if (r_type == R_ALPHA_TPRELHI) |
4518 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4519 | goto default_reloc; |
4520 | ||
4521 | case R_ALPHA_GOTDTPREL: | |
4522 | case R_ALPHA_GOTTPREL: | |
4523 | BFD_ASSERT(sgot != NULL); | |
4524 | BFD_ASSERT(gp != 0); | |
4525 | BFD_ASSERT(gotent != NULL); | |
4526 | BFD_ASSERT(gotent->use_count >= 1); | |
4527 | ||
4528 | if (!gotent->reloc_done) | |
4529 | { | |
4530 | gotent->reloc_done = 1; | |
4531 | ||
4532 | if (dynamic_symbol_p) | |
4533 | value = 0; | |
4534 | else | |
4535 | { | |
e1918d23 | 4536 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4537 | if (r_type == R_ALPHA_GOTDTPREL) |
4538 | value -= dtp_base; | |
4539 | else if (!info->shared) | |
4540 | value -= tp_base; | |
4541 | else | |
4542 | { | |
4543 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, | |
4544 | gotent->got_offset, 0, | |
4545 | R_ALPHA_TPREL64, | |
4546 | value - dtp_base); | |
4547 | value = 0; | |
4548 | } | |
3765b1be RH |
4549 | } |
4550 | bfd_put_64 (output_bfd, value, | |
4551 | sgot->contents + gotent->got_offset); | |
4552 | } | |
4553 | ||
4554 | value = (sgot->output_section->vma | |
4555 | + sgot->output_offset | |
4556 | + gotent->got_offset); | |
4557 | value -= gp; | |
4558 | goto default_reloc; | |
4559 | ||
252b5132 RH |
4560 | default: |
4561 | default_reloc: | |
4562 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4563 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4564 | break; |
4565 | } | |
4566 | ||
4567 | switch (r) | |
4568 | { | |
4569 | case bfd_reloc_ok: | |
4570 | break; | |
4571 | ||
4572 | case bfd_reloc_overflow: | |
4573 | { | |
4574 | const char *name; | |
4575 | ||
ed4de5e2 JJ |
4576 | /* Don't warn if the overflow is due to pc relative reloc |
4577 | against discarded section. Section optimization code should | |
4578 | handle it. */ | |
4579 | ||
4580 | if (r_symndx < symtab_hdr->sh_info | |
4581 | && sec != NULL && howto->pc_relative | |
4582 | && elf_discarded_section (sec)) | |
4583 | break; | |
4584 | ||
252b5132 | 4585 | if (h != NULL) |
dfeffb9f | 4586 | name = NULL; |
252b5132 RH |
4587 | else |
4588 | { | |
4589 | name = (bfd_elf_string_from_elf_section | |
4590 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4591 | if (name == NULL) | |
b34976b6 | 4592 | return FALSE; |
252b5132 RH |
4593 | if (*name == '\0') |
4594 | name = bfd_section_name (input_bfd, sec); | |
4595 | } | |
4596 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
4597 | (info, (h ? &h->root.root : NULL), name, howto->name, |
4598 | (bfd_vma) 0, input_bfd, input_section, | |
4599 | rel->r_offset))) | |
b34976b6 | 4600 | ret_val = FALSE; |
252b5132 RH |
4601 | } |
4602 | break; | |
4603 | ||
4604 | default: | |
4605 | case bfd_reloc_outofrange: | |
4606 | abort (); | |
4607 | } | |
4608 | } | |
4609 | ||
f16fbd61 | 4610 | return ret_val; |
252b5132 RH |
4611 | } |
4612 | ||
4613 | /* Finish up dynamic symbol handling. We set the contents of various | |
4614 | dynamic sections here. */ | |
4615 | ||
b34976b6 | 4616 | static bfd_boolean |
a7519a3c RH |
4617 | elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
4618 | struct elf_link_hash_entry *h, | |
4619 | Elf_Internal_Sym *sym) | |
252b5132 | 4620 | { |
6ec7057a | 4621 | struct alpha_elf_link_hash_entry *ah = (struct alpha_elf_link_hash_entry *)h; |
252b5132 RH |
4622 | bfd *dynobj = elf_hash_table(info)->dynobj; |
4623 | ||
6ec7057a | 4624 | if (h->needs_plt) |
252b5132 RH |
4625 | { |
4626 | /* Fill in the .plt entry for this symbol. */ | |
4627 | asection *splt, *sgot, *srel; | |
4628 | Elf_Internal_Rela outrel; | |
947216bf | 4629 | bfd_byte *loc; |
252b5132 RH |
4630 | bfd_vma got_addr, plt_addr; |
4631 | bfd_vma plt_index; | |
4632 | struct alpha_elf_got_entry *gotent; | |
4633 | ||
4634 | BFD_ASSERT (h->dynindx != -1); | |
4635 | ||
252b5132 RH |
4636 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
4637 | BFD_ASSERT (splt != NULL); | |
4638 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4639 | BFD_ASSERT (srel != NULL); | |
252b5132 | 4640 | |
6ec7057a RH |
4641 | for (gotent = ah->got_entries; gotent ; gotent = gotent->next) |
4642 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
4643 | && gotent->use_count > 0) | |
4644 | { | |
4645 | unsigned int insn; | |
4646 | int disp; | |
252b5132 | 4647 | |
6ec7057a RH |
4648 | sgot = alpha_elf_tdata (gotent->gotobj)->got; |
4649 | BFD_ASSERT (sgot != NULL); | |
252b5132 | 4650 | |
6ec7057a RH |
4651 | BFD_ASSERT (gotent->got_offset != -1); |
4652 | BFD_ASSERT (gotent->plt_offset != -1); | |
252b5132 | 4653 | |
6ec7057a RH |
4654 | got_addr = (sgot->output_section->vma |
4655 | + sgot->output_offset | |
4656 | + gotent->got_offset); | |
4657 | plt_addr = (splt->output_section->vma | |
4658 | + splt->output_offset | |
4659 | + gotent->plt_offset); | |
252b5132 | 4660 | |
6ec7057a | 4661 | plt_index = (gotent->plt_offset-PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; |
252b5132 | 4662 | |
6ec7057a RH |
4663 | /* Fill in the entry in the procedure linkage table. */ |
4664 | if (elf64_alpha_use_secureplt) | |
4665 | { | |
4666 | disp = (PLT_HEADER_SIZE - 4) - (gotent->plt_offset + 4); | |
4667 | insn = INSN_AD (INSN_BR, 31, disp); | |
4668 | bfd_put_32 (output_bfd, insn, | |
4669 | splt->contents + gotent->plt_offset); | |
252b5132 | 4670 | |
6ec7057a RH |
4671 | plt_index = ((gotent->plt_offset - NEW_PLT_HEADER_SIZE) |
4672 | / NEW_PLT_ENTRY_SIZE); | |
4673 | } | |
4674 | else | |
4675 | { | |
4676 | disp = -(gotent->plt_offset + 4); | |
4677 | insn = INSN_AD (INSN_BR, 28, disp); | |
4678 | bfd_put_32 (output_bfd, insn, | |
4679 | splt->contents + gotent->plt_offset); | |
4680 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4681 | splt->contents + gotent->plt_offset + 4); | |
4682 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4683 | splt->contents + gotent->plt_offset + 8); | |
4684 | ||
4685 | plt_index = ((gotent->plt_offset - OLD_PLT_HEADER_SIZE) | |
4686 | / OLD_PLT_ENTRY_SIZE); | |
4687 | } | |
252b5132 | 4688 | |
6ec7057a RH |
4689 | /* Fill in the entry in the .rela.plt section. */ |
4690 | outrel.r_offset = got_addr; | |
4691 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4692 | outrel.r_addend = 0; | |
252b5132 | 4693 | |
6ec7057a RH |
4694 | loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); |
4695 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 4696 | |
6ec7057a RH |
4697 | /* Fill in the entry in the .got. */ |
4698 | bfd_put_64 (output_bfd, plt_addr, | |
4699 | sgot->contents + gotent->got_offset); | |
4700 | } | |
252b5132 RH |
4701 | } |
4702 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
4703 | { | |
4704 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
4705 | asection *srel; | |
252b5132 RH |
4706 | struct alpha_elf_got_entry *gotent; |
4707 | ||
4708 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4709 | BFD_ASSERT (srel != NULL); | |
4710 | ||
252b5132 RH |
4711 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
4712 | gotent != NULL; | |
4713 | gotent = gotent->next) | |
4714 | { | |
f44f99a5 | 4715 | asection *sgot; |
1bbc9cec | 4716 | long r_type; |
3765b1be | 4717 | |
f44f99a5 RH |
4718 | if (gotent->use_count == 0) |
4719 | continue; | |
4720 | ||
4721 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3765b1be RH |
4722 | |
4723 | r_type = gotent->reloc_type; | |
4724 | switch (r_type) | |
4725 | { | |
4726 | case R_ALPHA_LITERAL: | |
4727 | r_type = R_ALPHA_GLOB_DAT; | |
4728 | break; | |
4729 | case R_ALPHA_TLSGD: | |
4730 | r_type = R_ALPHA_DTPMOD64; | |
4731 | break; | |
4732 | case R_ALPHA_GOTDTPREL: | |
4733 | r_type = R_ALPHA_DTPREL64; | |
4734 | break; | |
4735 | case R_ALPHA_GOTTPREL: | |
4736 | r_type = R_ALPHA_TPREL64; | |
4737 | break; | |
4738 | case R_ALPHA_TLSLDM: | |
4739 | default: | |
4740 | abort (); | |
4741 | } | |
4742 | ||
1bbc9cec RH |
4743 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4744 | gotent->got_offset, h->dynindx, | |
4745 | r_type, gotent->addend); | |
3765b1be RH |
4746 | |
4747 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
1bbc9cec RH |
4748 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4749 | gotent->got_offset + 8, h->dynindx, | |
4750 | R_ALPHA_DTPREL64, gotent->addend); | |
252b5132 RH |
4751 | } |
4752 | } | |
4753 | ||
4754 | /* Mark some specially defined symbols as absolute. */ | |
4755 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4756 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
4757 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
4758 | sym->st_shndx = SHN_ABS; | |
4759 | ||
b34976b6 | 4760 | return TRUE; |
252b5132 RH |
4761 | } |
4762 | ||
4763 | /* Finish up the dynamic sections. */ | |
4764 | ||
b34976b6 | 4765 | static bfd_boolean |
a7519a3c RH |
4766 | elf64_alpha_finish_dynamic_sections (bfd *output_bfd, |
4767 | struct bfd_link_info *info) | |
252b5132 RH |
4768 | { |
4769 | bfd *dynobj; | |
4770 | asection *sdyn; | |
4771 | ||
4772 | dynobj = elf_hash_table (info)->dynobj; | |
4773 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4774 | ||
4775 | if (elf_hash_table (info)->dynamic_sections_created) | |
4776 | { | |
6ec7057a | 4777 | asection *splt, *sgotplt, *srelaplt; |
252b5132 | 4778 | Elf64_External_Dyn *dyncon, *dynconend; |
6ec7057a | 4779 | bfd_vma plt_vma, gotplt_vma; |
252b5132 RH |
4780 | |
4781 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
6ec7057a | 4782 | srelaplt = bfd_get_section_by_name (output_bfd, ".rela.plt"); |
252b5132 RH |
4783 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
4784 | ||
6ec7057a RH |
4785 | plt_vma = splt->output_section->vma + splt->output_offset; |
4786 | ||
4787 | gotplt_vma = 0; | |
4788 | if (elf64_alpha_use_secureplt) | |
4789 | { | |
4790 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4791 | BFD_ASSERT (sgotplt != NULL); | |
4792 | if (sgotplt->size > 0) | |
4793 | gotplt_vma = sgotplt->output_section->vma + sgotplt->output_offset; | |
4794 | } | |
4795 | ||
252b5132 | 4796 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
eea6121a | 4797 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4798 | for (; dyncon < dynconend; dyncon++) |
4799 | { | |
4800 | Elf_Internal_Dyn dyn; | |
252b5132 RH |
4801 | |
4802 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
4803 | ||
4804 | switch (dyn.d_tag) | |
4805 | { | |
4806 | case DT_PLTGOT: | |
6ec7057a RH |
4807 | dyn.d_un.d_ptr |
4808 | = elf64_alpha_use_secureplt ? gotplt_vma : plt_vma; | |
4809 | break; | |
252b5132 | 4810 | case DT_PLTRELSZ: |
6ec7057a RH |
4811 | dyn.d_un.d_val = srelaplt ? srelaplt->size : 0; |
4812 | break; | |
252b5132 | 4813 | case DT_JMPREL: |
6ec7057a RH |
4814 | dyn.d_un.d_ptr = srelaplt ? srelaplt->vma : 0; |
4815 | break; | |
252b5132 RH |
4816 | |
4817 | case DT_RELASZ: | |
4818 | /* My interpretation of the TIS v1.1 ELF document indicates | |
4819 | that RELASZ should not include JMPREL. This is not what | |
4820 | the rest of the BFD does. It is, however, what the | |
4821 | glibc ld.so wants. Do this fixup here until we found | |
4822 | out who is right. */ | |
6ec7057a RH |
4823 | if (srelaplt) |
4824 | dyn.d_un.d_val -= srelaplt->size; | |
252b5132 RH |
4825 | break; |
4826 | } | |
4827 | ||
4828 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4829 | } | |
4830 | ||
6ec7057a | 4831 | /* Initialize the plt header. */ |
eea6121a | 4832 | if (splt->size > 0) |
252b5132 | 4833 | { |
6ec7057a RH |
4834 | unsigned int insn; |
4835 | int ofs; | |
4836 | ||
4837 | if (elf64_alpha_use_secureplt) | |
4838 | { | |
4839 | ofs = gotplt_vma - (plt_vma + PLT_HEADER_SIZE); | |
4840 | ||
4841 | insn = INSN_ABC (INSN_SUBQ, 27, 28, 25); | |
4842 | bfd_put_32 (output_bfd, insn, splt->contents); | |
4843 | ||
4844 | insn = INSN_ABO (INSN_LDAH, 28, 28, (ofs + 0x8000) >> 16); | |
4845 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
4846 | ||
4847 | insn = INSN_ABC (INSN_S4SUBQ, 25, 25, 25); | |
4848 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
4849 | ||
4850 | insn = INSN_ABO (INSN_LDA, 28, 28, ofs); | |
4851 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
4852 | ||
4853 | insn = INSN_ABO (INSN_LDQ, 27, 28, 0); | |
4854 | bfd_put_32 (output_bfd, insn, splt->contents + 16); | |
4855 | ||
4856 | insn = INSN_ABC (INSN_ADDQ, 25, 25, 25); | |
4857 | bfd_put_32 (output_bfd, insn, splt->contents + 20); | |
4858 | ||
4859 | insn = INSN_ABO (INSN_LDQ, 28, 28, 8); | |
4860 | bfd_put_32 (output_bfd, insn, splt->contents + 24); | |
4861 | ||
4862 | insn = INSN_AB (INSN_JMP, 31, 27); | |
4863 | bfd_put_32 (output_bfd, insn, splt->contents + 28); | |
4864 | ||
4865 | insn = INSN_AD (INSN_BR, 28, -PLT_HEADER_SIZE); | |
4866 | bfd_put_32 (output_bfd, insn, splt->contents + 32); | |
4867 | } | |
4868 | else | |
4869 | { | |
4870 | insn = INSN_AD (INSN_BR, 27, 0); /* br $27, .+4 */ | |
4871 | bfd_put_32 (output_bfd, insn, splt->contents); | |
4872 | ||
4873 | insn = INSN_ABO (INSN_LDQ, 27, 27, 12); | |
4874 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
4875 | ||
4876 | insn = INSN_UNOP; | |
4877 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
4878 | ||
4879 | insn = INSN_AB (INSN_JMP, 27, 27); | |
4880 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
4881 | ||
4882 | /* The next two words will be filled in by ld.so. */ | |
4883 | bfd_put_64 (output_bfd, 0, splt->contents + 16); | |
4884 | bfd_put_64 (output_bfd, 0, splt->contents + 24); | |
4885 | } | |
252b5132 | 4886 | |
eecdbe52 | 4887 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; |
252b5132 RH |
4888 | } |
4889 | } | |
4890 | ||
b34976b6 | 4891 | return TRUE; |
252b5132 RH |
4892 | } |
4893 | ||
96e2734b RH |
4894 | /* We need to use a special link routine to handle the .mdebug section. |
4895 | We need to merge all instances of these sections together, not write | |
4896 | them all out sequentially. */ | |
252b5132 | 4897 | |
b34976b6 | 4898 | static bfd_boolean |
a7519a3c | 4899 | elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
4900 | { |
4901 | asection *o; | |
4902 | struct bfd_link_order *p; | |
96e2734b | 4903 | asection *mdebug_sec; |
252b5132 RH |
4904 | struct ecoff_debug_info debug; |
4905 | const struct ecoff_debug_swap *swap | |
4906 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
4907 | HDRR *symhdr = &debug.symbolic_header; | |
4908 | PTR mdebug_handle = NULL; | |
4909 | ||
96e2734b | 4910 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 4911 | mdebug_sec = NULL; |
252b5132 RH |
4912 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
4913 | { | |
252b5132 RH |
4914 | if (strcmp (o->name, ".mdebug") == 0) |
4915 | { | |
4916 | struct extsym_info einfo; | |
4917 | ||
4918 | /* We have found the .mdebug section in the output file. | |
4919 | Look through all the link_orders comprising it and merge | |
4920 | the information together. */ | |
4921 | symhdr->magic = swap->sym_magic; | |
4922 | /* FIXME: What should the version stamp be? */ | |
4923 | symhdr->vstamp = 0; | |
4924 | symhdr->ilineMax = 0; | |
4925 | symhdr->cbLine = 0; | |
4926 | symhdr->idnMax = 0; | |
4927 | symhdr->ipdMax = 0; | |
4928 | symhdr->isymMax = 0; | |
4929 | symhdr->ioptMax = 0; | |
4930 | symhdr->iauxMax = 0; | |
4931 | symhdr->issMax = 0; | |
4932 | symhdr->issExtMax = 0; | |
4933 | symhdr->ifdMax = 0; | |
4934 | symhdr->crfd = 0; | |
4935 | symhdr->iextMax = 0; | |
4936 | ||
4937 | /* We accumulate the debugging information itself in the | |
4938 | debug_info structure. */ | |
4939 | debug.line = NULL; | |
4940 | debug.external_dnr = NULL; | |
4941 | debug.external_pdr = NULL; | |
4942 | debug.external_sym = NULL; | |
4943 | debug.external_opt = NULL; | |
4944 | debug.external_aux = NULL; | |
4945 | debug.ss = NULL; | |
4946 | debug.ssext = debug.ssext_end = NULL; | |
4947 | debug.external_fdr = NULL; | |
4948 | debug.external_rfd = NULL; | |
4949 | debug.external_ext = debug.external_ext_end = NULL; | |
4950 | ||
4951 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
4952 | if (mdebug_handle == (PTR) NULL) | |
b34976b6 | 4953 | return FALSE; |
252b5132 RH |
4954 | |
4955 | if (1) | |
4956 | { | |
4957 | asection *s; | |
4958 | EXTR esym; | |
52b9d213 | 4959 | bfd_vma last = 0; |
252b5132 RH |
4960 | unsigned int i; |
4961 | static const char * const name[] = | |
4962 | { | |
4963 | ".text", ".init", ".fini", ".data", | |
4964 | ".rodata", ".sdata", ".sbss", ".bss" | |
4965 | }; | |
4966 | static const int sc[] = { scText, scInit, scFini, scData, | |
4967 | scRData, scSData, scSBss, scBss }; | |
4968 | ||
4969 | esym.jmptbl = 0; | |
4970 | esym.cobol_main = 0; | |
4971 | esym.weakext = 0; | |
4972 | esym.reserved = 0; | |
4973 | esym.ifd = ifdNil; | |
4974 | esym.asym.iss = issNil; | |
4975 | esym.asym.st = stLocal; | |
4976 | esym.asym.reserved = 0; | |
4977 | esym.asym.index = indexNil; | |
4978 | for (i = 0; i < 8; i++) | |
4979 | { | |
4980 | esym.asym.sc = sc[i]; | |
4981 | s = bfd_get_section_by_name (abfd, name[i]); | |
4982 | if (s != NULL) | |
4983 | { | |
4984 | esym.asym.value = s->vma; | |
eea6121a | 4985 | last = s->vma + s->size; |
252b5132 RH |
4986 | } |
4987 | else | |
4988 | esym.asym.value = last; | |
4989 | ||
4990 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
4991 | name[i], &esym)) | |
b34976b6 | 4992 | return FALSE; |
252b5132 RH |
4993 | } |
4994 | } | |
4995 | ||
8423293d | 4996 | for (p = o->map_head.link_order; |
252b5132 RH |
4997 | p != (struct bfd_link_order *) NULL; |
4998 | p = p->next) | |
4999 | { | |
5000 | asection *input_section; | |
5001 | bfd *input_bfd; | |
5002 | const struct ecoff_debug_swap *input_swap; | |
5003 | struct ecoff_debug_info input_debug; | |
5004 | char *eraw_src; | |
5005 | char *eraw_end; | |
5006 | ||
5007 | if (p->type != bfd_indirect_link_order) | |
5008 | { | |
fd96f80f | 5009 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5010 | continue; |
5011 | abort (); | |
5012 | } | |
5013 | ||
5014 | input_section = p->u.indirect.section; | |
5015 | input_bfd = input_section->owner; | |
5016 | ||
5017 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
5018 | || (get_elf_backend_data (input_bfd) | |
5019 | ->elf_backend_ecoff_debug_swap) == NULL) | |
5020 | { | |
5021 | /* I don't know what a non ALPHA ELF bfd would be | |
5022 | doing with a .mdebug section, but I don't really | |
5023 | want to deal with it. */ | |
5024 | continue; | |
5025 | } | |
5026 | ||
5027 | input_swap = (get_elf_backend_data (input_bfd) | |
5028 | ->elf_backend_ecoff_debug_swap); | |
5029 | ||
eea6121a | 5030 | BFD_ASSERT (p->size == input_section->size); |
252b5132 RH |
5031 | |
5032 | /* The ECOFF linking code expects that we have already | |
5033 | read in the debugging information and set up an | |
5034 | ecoff_debug_info structure, so we do that now. */ | |
5035 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
5036 | &input_debug)) | |
b34976b6 | 5037 | return FALSE; |
252b5132 RH |
5038 | |
5039 | if (! (bfd_ecoff_debug_accumulate | |
5040 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5041 | &input_debug, input_swap, info))) | |
b34976b6 | 5042 | return FALSE; |
252b5132 RH |
5043 | |
5044 | /* Loop through the external symbols. For each one with | |
5045 | interesting information, try to find the symbol in | |
5046 | the linker global hash table and save the information | |
5047 | for the output external symbols. */ | |
5048 | eraw_src = input_debug.external_ext; | |
5049 | eraw_end = (eraw_src | |
5050 | + (input_debug.symbolic_header.iextMax | |
5051 | * input_swap->external_ext_size)); | |
5052 | for (; | |
5053 | eraw_src < eraw_end; | |
5054 | eraw_src += input_swap->external_ext_size) | |
5055 | { | |
5056 | EXTR ext; | |
5057 | const char *name; | |
5058 | struct alpha_elf_link_hash_entry *h; | |
5059 | ||
5060 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
5061 | if (ext.asym.sc == scNil | |
5062 | || ext.asym.sc == scUndefined | |
5063 | || ext.asym.sc == scSUndefined) | |
5064 | continue; | |
5065 | ||
5066 | name = input_debug.ssext + ext.asym.iss; | |
5067 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
b34976b6 | 5068 | name, FALSE, FALSE, TRUE); |
252b5132 RH |
5069 | if (h == NULL || h->esym.ifd != -2) |
5070 | continue; | |
5071 | ||
5072 | if (ext.ifd != -1) | |
5073 | { | |
5074 | BFD_ASSERT (ext.ifd | |
5075 | < input_debug.symbolic_header.ifdMax); | |
5076 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5077 | } | |
5078 | ||
5079 | h->esym = ext; | |
5080 | } | |
5081 | ||
5082 | /* Free up the information we just read. */ | |
5083 | free (input_debug.line); | |
5084 | free (input_debug.external_dnr); | |
5085 | free (input_debug.external_pdr); | |
5086 | free (input_debug.external_sym); | |
5087 | free (input_debug.external_opt); | |
5088 | free (input_debug.external_aux); | |
5089 | free (input_debug.ss); | |
5090 | free (input_debug.ssext); | |
5091 | free (input_debug.external_fdr); | |
5092 | free (input_debug.external_rfd); | |
5093 | free (input_debug.external_ext); | |
5094 | ||
5095 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5096 | elf_link_input_bfd ignores this section. */ | |
5097 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5098 | } | |
5099 | ||
252b5132 RH |
5100 | /* Build the external symbol information. */ |
5101 | einfo.abfd = abfd; | |
5102 | einfo.info = info; | |
5103 | einfo.debug = &debug; | |
5104 | einfo.swap = swap; | |
b34976b6 | 5105 | einfo.failed = FALSE; |
252b5132 RH |
5106 | elf_link_hash_traverse (elf_hash_table (info), |
5107 | elf64_alpha_output_extsym, | |
5108 | (PTR) &einfo); | |
5109 | if (einfo.failed) | |
b34976b6 | 5110 | return FALSE; |
252b5132 RH |
5111 | |
5112 | /* Set the size of the .mdebug section. */ | |
eea6121a | 5113 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
252b5132 RH |
5114 | |
5115 | /* Skip this section later on (I don't think this currently | |
5116 | matters, but someday it might). */ | |
8423293d | 5117 | o->map_head.link_order = (struct bfd_link_order *) NULL; |
252b5132 RH |
5118 | |
5119 | mdebug_sec = o; | |
5120 | } | |
252b5132 RH |
5121 | } |
5122 | ||
5123 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 5124 | if (! bfd_elf_final_link (abfd, info)) |
b34976b6 | 5125 | return FALSE; |
252b5132 RH |
5126 | |
5127 | /* Now write out the computed sections. */ | |
5128 | ||
5129 | /* The .got subsections... */ | |
5130 | { | |
5131 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
5132 | for (i = alpha_elf_hash_table(info)->got_list; | |
5133 | i != NULL; | |
5134 | i = alpha_elf_tdata(i)->got_link_next) | |
5135 | { | |
5136 | asection *sgot; | |
5137 | ||
5138 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5139 | if (i == dynobj) | |
5140 | continue; | |
5141 | ||
5142 | sgot = alpha_elf_tdata(i)->got; | |
5143 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5144 | sgot->contents, |
5145 | (file_ptr) sgot->output_offset, | |
eea6121a | 5146 | sgot->size)) |
b34976b6 | 5147 | return FALSE; |
252b5132 RH |
5148 | } |
5149 | } | |
5150 | ||
252b5132 RH |
5151 | if (mdebug_sec != (asection *) NULL) |
5152 | { | |
5153 | BFD_ASSERT (abfd->output_has_begun); | |
5154 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5155 | swap, info, | |
5156 | mdebug_sec->filepos)) | |
b34976b6 | 5157 | return FALSE; |
252b5132 RH |
5158 | |
5159 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5160 | } | |
5161 | ||
b34976b6 | 5162 | return TRUE; |
252b5132 | 5163 | } |
fcfbdf31 JJ |
5164 | |
5165 | static enum elf_reloc_type_class | |
a7519a3c | 5166 | elf64_alpha_reloc_type_class (const Elf_Internal_Rela *rela) |
fcfbdf31 | 5167 | { |
f51e552e | 5168 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5169 | { |
5170 | case R_ALPHA_RELATIVE: | |
5171 | return reloc_class_relative; | |
5172 | case R_ALPHA_JMP_SLOT: | |
5173 | return reloc_class_plt; | |
5174 | case R_ALPHA_COPY: | |
5175 | return reloc_class_copy; | |
5176 | default: | |
5177 | return reloc_class_normal; | |
5178 | } | |
5179 | } | |
252b5132 | 5180 | \f |
7f4d3958 L |
5181 | static struct bfd_elf_special_section const |
5182 | alpha_special_sections_s[]= | |
2f89ff8d | 5183 | { |
7dcb9820 AM |
5184 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
5185 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, | |
5186 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
5187 | }; |
5188 | ||
7f4d3958 L |
5189 | static struct bfd_elf_special_section const * |
5190 | elf64_alpha_special_sections[27] = | |
5191 | { | |
5192 | NULL, /* 'a' */ | |
5193 | NULL, /* 'b' */ | |
5194 | NULL, /* 'c' */ | |
5195 | NULL, /* 'd' */ | |
5196 | NULL, /* 'e' */ | |
5197 | NULL, /* 'f' */ | |
5198 | NULL, /* 'g' */ | |
5199 | NULL, /* 'h' */ | |
5200 | NULL, /* 'i' */ | |
5201 | NULL, /* 'j' */ | |
5202 | NULL, /* 'k' */ | |
5203 | NULL, /* 'l' */ | |
5204 | NULL, /* 'm' */ | |
5205 | NULL, /* 'n' */ | |
5206 | NULL, /* 'o' */ | |
5207 | NULL, /* 'p' */ | |
5208 | NULL, /* 'q' */ | |
5209 | NULL, /* 'r' */ | |
5210 | alpha_special_sections_s, /* 's' */ | |
5211 | NULL, /* 't' */ | |
5212 | NULL, /* 'u' */ | |
5213 | NULL, /* 'v' */ | |
5214 | NULL, /* 'w' */ | |
5215 | NULL, /* 'x' */ | |
5216 | NULL, /* 'y' */ | |
5217 | NULL, /* 'z' */ | |
5218 | NULL /* other */ | |
5219 | }; | |
5220 | ||
252b5132 RH |
5221 | /* ECOFF swapping routines. These are used when dealing with the |
5222 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5223 | from elf32-mips.c. */ |
252b5132 RH |
5224 | static const struct ecoff_debug_swap |
5225 | elf64_alpha_ecoff_debug_swap = | |
5226 | { | |
5227 | /* Symbol table magic number. */ | |
5228 | magicSym2, | |
5229 | /* Alignment of debugging information. E.g., 4. */ | |
5230 | 8, | |
5231 | /* Sizes of external symbolic information. */ | |
5232 | sizeof (struct hdr_ext), | |
5233 | sizeof (struct dnr_ext), | |
5234 | sizeof (struct pdr_ext), | |
5235 | sizeof (struct sym_ext), | |
5236 | sizeof (struct opt_ext), | |
5237 | sizeof (struct fdr_ext), | |
5238 | sizeof (struct rfd_ext), | |
5239 | sizeof (struct ext_ext), | |
5240 | /* Functions to swap in external symbolic data. */ | |
5241 | ecoff_swap_hdr_in, | |
5242 | ecoff_swap_dnr_in, | |
5243 | ecoff_swap_pdr_in, | |
5244 | ecoff_swap_sym_in, | |
5245 | ecoff_swap_opt_in, | |
5246 | ecoff_swap_fdr_in, | |
5247 | ecoff_swap_rfd_in, | |
5248 | ecoff_swap_ext_in, | |
5249 | _bfd_ecoff_swap_tir_in, | |
5250 | _bfd_ecoff_swap_rndx_in, | |
5251 | /* Functions to swap out external symbolic data. */ | |
5252 | ecoff_swap_hdr_out, | |
5253 | ecoff_swap_dnr_out, | |
5254 | ecoff_swap_pdr_out, | |
5255 | ecoff_swap_sym_out, | |
5256 | ecoff_swap_opt_out, | |
5257 | ecoff_swap_fdr_out, | |
5258 | ecoff_swap_rfd_out, | |
5259 | ecoff_swap_ext_out, | |
5260 | _bfd_ecoff_swap_tir_out, | |
5261 | _bfd_ecoff_swap_rndx_out, | |
5262 | /* Function to read in symbolic data. */ | |
5263 | elf64_alpha_read_ecoff_info | |
5264 | }; | |
5265 | \f | |
70bcb145 JW |
5266 | /* Use a non-standard hash bucket size of 8. */ |
5267 | ||
562ace6b | 5268 | static const struct elf_size_info alpha_elf_size_info = |
70bcb145 JW |
5269 | { |
5270 | sizeof (Elf64_External_Ehdr), | |
5271 | sizeof (Elf64_External_Phdr), | |
5272 | sizeof (Elf64_External_Shdr), | |
5273 | sizeof (Elf64_External_Rel), | |
5274 | sizeof (Elf64_External_Rela), | |
5275 | sizeof (Elf64_External_Sym), | |
5276 | sizeof (Elf64_External_Dyn), | |
5277 | sizeof (Elf_External_Note), | |
5278 | 8, | |
5279 | 1, | |
45d6a902 | 5280 | 64, 3, |
70bcb145 JW |
5281 | ELFCLASS64, EV_CURRENT, |
5282 | bfd_elf64_write_out_phdrs, | |
5283 | bfd_elf64_write_shdrs_and_ehdr, | |
5284 | bfd_elf64_write_relocs, | |
73ff0d56 | 5285 | bfd_elf64_swap_symbol_in, |
70bcb145 JW |
5286 | bfd_elf64_swap_symbol_out, |
5287 | bfd_elf64_slurp_reloc_table, | |
5288 | bfd_elf64_slurp_symbol_table, | |
5289 | bfd_elf64_swap_dyn_in, | |
5290 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
5291 | bfd_elf64_swap_reloc_in, |
5292 | bfd_elf64_swap_reloc_out, | |
5293 | bfd_elf64_swap_reloca_in, | |
5294 | bfd_elf64_swap_reloca_out | |
70bcb145 JW |
5295 | }; |
5296 | ||
252b5132 RH |
5297 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
5298 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
5299 | #define ELF_ARCH bfd_arch_alpha | |
56fc028e AJ |
5300 | #define ELF_MACHINE_CODE EM_ALPHA |
5301 | #define ELF_MAXPAGESIZE 0x10000 | |
252b5132 RH |
5302 | |
5303 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5304 | elf64_alpha_bfd_link_hash_table_create | |
5305 | ||
5306 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5307 | elf64_alpha_bfd_reloc_type_lookup | |
5308 | #define elf_info_to_howto \ | |
5309 | elf64_alpha_info_to_howto | |
5310 | ||
5311 | #define bfd_elf64_mkobject \ | |
5312 | elf64_alpha_mkobject | |
5313 | #define elf_backend_object_p \ | |
5314 | elf64_alpha_object_p | |
5315 | ||
5316 | #define elf_backend_section_from_shdr \ | |
5317 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5318 | #define elf_backend_section_flags \ |
5319 | elf64_alpha_section_flags | |
252b5132 RH |
5320 | #define elf_backend_fake_sections \ |
5321 | elf64_alpha_fake_sections | |
5322 | ||
5323 | #define bfd_elf64_bfd_is_local_label_name \ | |
5324 | elf64_alpha_is_local_label_name | |
5325 | #define bfd_elf64_find_nearest_line \ | |
5326 | elf64_alpha_find_nearest_line | |
5327 | #define bfd_elf64_bfd_relax_section \ | |
5328 | elf64_alpha_relax_section | |
5329 | ||
5330 | #define elf_backend_add_symbol_hook \ | |
5331 | elf64_alpha_add_symbol_hook | |
5332 | #define elf_backend_check_relocs \ | |
5333 | elf64_alpha_check_relocs | |
5334 | #define elf_backend_create_dynamic_sections \ | |
5335 | elf64_alpha_create_dynamic_sections | |
5336 | #define elf_backend_adjust_dynamic_symbol \ | |
5337 | elf64_alpha_adjust_dynamic_symbol | |
5338 | #define elf_backend_always_size_sections \ | |
5339 | elf64_alpha_always_size_sections | |
5340 | #define elf_backend_size_dynamic_sections \ | |
5341 | elf64_alpha_size_dynamic_sections | |
5342 | #define elf_backend_relocate_section \ | |
5343 | elf64_alpha_relocate_section | |
5344 | #define elf_backend_finish_dynamic_symbol \ | |
5345 | elf64_alpha_finish_dynamic_symbol | |
5346 | #define elf_backend_finish_dynamic_sections \ | |
5347 | elf64_alpha_finish_dynamic_sections | |
5348 | #define bfd_elf64_bfd_final_link \ | |
5349 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5350 | #define elf_backend_reloc_type_class \ |
5351 | elf64_alpha_reloc_type_class | |
252b5132 RH |
5352 | |
5353 | #define elf_backend_ecoff_debug_swap \ | |
5354 | &elf64_alpha_ecoff_debug_swap | |
5355 | ||
70bcb145 JW |
5356 | #define elf_backend_size_info \ |
5357 | alpha_elf_size_info | |
5358 | ||
2f89ff8d L |
5359 | #define elf_backend_special_sections \ |
5360 | elf64_alpha_special_sections | |
5361 | ||
38b1a46c | 5362 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5363 | #define elf_backend_want_got_plt 0 |
5364 | #define elf_backend_plt_readonly 0 | |
5365 | #define elf_backend_want_plt_sym 1 | |
5366 | #define elf_backend_got_header_size 0 | |
252b5132 RH |
5367 | |
5368 | #include "elf64-target.h" | |
2238051f RH |
5369 | \f |
5370 | /* FreeBSD support. */ | |
5371 | ||
5372 | #undef TARGET_LITTLE_SYM | |
5373 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_freebsd_vec | |
5374 | #undef TARGET_LITTLE_NAME | |
5375 | #define TARGET_LITTLE_NAME "elf64-alpha-freebsd" | |
5376 | ||
5377 | /* The kernel recognizes executables as valid only if they carry a | |
5378 | "FreeBSD" label in the ELF header. So we put this label on all | |
5379 | executables and (for simplicity) also all other object files. */ | |
5380 | ||
2238051f | 5381 | static void |
a7519a3c RH |
5382 | elf64_alpha_fbsd_post_process_headers (bfd * abfd, |
5383 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
2238051f RH |
5384 | { |
5385 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
5386 | ||
5387 | i_ehdrp = elf_elfheader (abfd); | |
5388 | ||
5389 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
5390 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
5391 | #ifdef OLD_FREEBSD_ABI_LABEL | |
5392 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5393 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
5394 | #endif | |
5395 | } | |
5396 | ||
5397 | #undef elf_backend_post_process_headers | |
5398 | #define elf_backend_post_process_headers \ | |
5399 | elf64_alpha_fbsd_post_process_headers | |
5400 | ||
571fe01f | 5401 | #undef elf64_bed |
2238051f RH |
5402 | #define elf64_bed elf64_alpha_fbsd_bed |
5403 | ||
5404 | #include "elf64-target.h" |