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252b5132 | 1 | /* Alpha specific support for 64-bit ELF |
b3adc24a | 2 | Copyright (C) 1996-2020 Free Software Foundation, Inc. |
252b5132 RH |
3 | Contributed by Richard Henderson <rth@tamu.edu>. |
4 | ||
571fe01f | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
571fe01f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
571fe01f | 10 | (at your option) any later version. |
252b5132 | 11 | |
571fe01f NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
571fe01f NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
21 | ||
252b5132 RH |
22 | |
23 | /* We need a published ABI spec for this. Until one comes out, don't | |
24 | assume this'll remain unchanged forever. */ | |
25 | ||
252b5132 | 26 | #include "sysdep.h" |
3db64b00 | 27 | #include "bfd.h" |
252b5132 RH |
28 | #include "libbfd.h" |
29 | #include "elf-bfd.h" | |
0ba9378a | 30 | #include "ecoff-bfd.h" |
252b5132 RH |
31 | |
32 | #include "elf/alpha.h" | |
33 | ||
34 | #define ALPHAECOFF | |
35 | ||
36 | #define NO_COFF_RELOCS | |
37 | #define NO_COFF_SYMBOLS | |
38 | #define NO_COFF_LINENOS | |
39 | ||
fe8bc63d | 40 | /* Get the ECOFF swapping routines. Needed for the debug information. */ |
252b5132 RH |
41 | #include "coff/internal.h" |
42 | #include "coff/sym.h" | |
43 | #include "coff/symconst.h" | |
44 | #include "coff/ecoff.h" | |
45 | #include "coff/alpha.h" | |
46 | #include "aout/ar.h" | |
47 | #include "libcoff.h" | |
48 | #include "libecoff.h" | |
49 | #define ECOFF_64 | |
50 | #include "ecoffswap.h" | |
51 | ||
6ec7057a RH |
52 | \f |
53 | /* Instruction data for plt generation and relaxation. */ | |
54 | ||
55 | #define OP_LDA 0x08 | |
56 | #define OP_LDAH 0x09 | |
57 | #define OP_LDQ 0x29 | |
58 | #define OP_BR 0x30 | |
59 | #define OP_BSR 0x34 | |
60 | ||
61 | #define INSN_LDA (OP_LDA << 26) | |
62 | #define INSN_LDAH (OP_LDAH << 26) | |
63 | #define INSN_LDQ (OP_LDQ << 26) | |
64 | #define INSN_BR (OP_BR << 26) | |
65 | ||
66 | #define INSN_ADDQ 0x40000400 | |
67 | #define INSN_RDUNIQ 0x0000009e | |
68 | #define INSN_SUBQ 0x40000520 | |
69 | #define INSN_S4SUBQ 0x40000560 | |
70 | #define INSN_UNOP 0x2ffe0000 | |
71 | ||
72 | #define INSN_JSR 0x68004000 | |
73 | #define INSN_JMP 0x68000000 | |
74 | #define INSN_JSR_MASK 0xfc00c000 | |
75 | ||
76 | #define INSN_A(I,A) (I | (A << 21)) | |
77 | #define INSN_AB(I,A,B) (I | (A << 21) | (B << 16)) | |
78 | #define INSN_ABC(I,A,B,C) (I | (A << 21) | (B << 16) | C) | |
79 | #define INSN_ABO(I,A,B,O) (I | (A << 21) | (B << 16) | ((O) & 0xffff)) | |
80 | #define INSN_AD(I,A,D) (I | (A << 21) | (((D) >> 2) & 0x1fffff)) | |
81 | ||
82 | /* PLT/GOT Stuff */ | |
83 | ||
84 | /* Set by ld emulation. Putting this into the link_info or hash structure | |
85 | is simply working too hard. */ | |
86 | #ifdef USE_SECUREPLT | |
87 | bfd_boolean elf64_alpha_use_secureplt = TRUE; | |
88 | #else | |
89 | bfd_boolean elf64_alpha_use_secureplt = FALSE; | |
90 | #endif | |
91 | ||
92 | #define OLD_PLT_HEADER_SIZE 32 | |
93 | #define OLD_PLT_ENTRY_SIZE 12 | |
94 | #define NEW_PLT_HEADER_SIZE 36 | |
95 | #define NEW_PLT_ENTRY_SIZE 4 | |
96 | ||
97 | #define PLT_HEADER_SIZE \ | |
98 | (elf64_alpha_use_secureplt ? NEW_PLT_HEADER_SIZE : OLD_PLT_HEADER_SIZE) | |
99 | #define PLT_ENTRY_SIZE \ | |
100 | (elf64_alpha_use_secureplt ? NEW_PLT_ENTRY_SIZE : OLD_PLT_ENTRY_SIZE) | |
101 | ||
102 | #define MAX_GOT_SIZE (64*1024) | |
103 | ||
104 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" | |
252b5132 | 105 | \f |
21d799b5 NC |
106 | |
107 | /* Used to implement multiple .got subsections. */ | |
108 | struct alpha_elf_got_entry | |
109 | { | |
110 | struct alpha_elf_got_entry *next; | |
111 | ||
112 | /* Which .got subsection? */ | |
113 | bfd *gotobj; | |
114 | ||
115 | /* The addend in effect for this entry. */ | |
116 | bfd_vma addend; | |
117 | ||
118 | /* The .got offset for this entry. */ | |
119 | int got_offset; | |
120 | ||
121 | /* The .plt offset for this entry. */ | |
122 | int plt_offset; | |
123 | ||
124 | /* How many references to this entry? */ | |
125 | int use_count; | |
126 | ||
127 | /* The relocation type of this entry. */ | |
128 | unsigned char reloc_type; | |
129 | ||
130 | /* How a LITERAL is used. */ | |
131 | unsigned char flags; | |
132 | ||
133 | /* Have we initialized the dynamic relocation for this entry? */ | |
134 | unsigned char reloc_done; | |
135 | ||
136 | /* Have we adjusted this entry for SEC_MERGE? */ | |
137 | unsigned char reloc_xlated; | |
138 | }; | |
139 | ||
140 | struct alpha_elf_reloc_entry | |
141 | { | |
142 | struct alpha_elf_reloc_entry *next; | |
143 | ||
144 | /* Which .reloc section? */ | |
145 | asection *srel; | |
146 | ||
147 | /* What kind of relocation? */ | |
148 | unsigned int rtype; | |
149 | ||
150 | /* Is this against read-only section? */ | |
151 | unsigned int reltext : 1; | |
152 | ||
153 | /* How many did we find? */ | |
154 | unsigned long count; | |
155 | }; | |
156 | ||
252b5132 RH |
157 | struct alpha_elf_link_hash_entry |
158 | { | |
159 | struct elf_link_hash_entry root; | |
160 | ||
161 | /* External symbol information. */ | |
162 | EXTR esym; | |
163 | ||
164 | /* Cumulative flags for all the .got entries. */ | |
165 | int flags; | |
166 | ||
9e756d64 | 167 | /* Contexts in which a literal was referenced. */ |
8288a39e RH |
168 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
169 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
170 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
171 | #define ALPHA_ELF_LINK_HASH_LU_JSR 0x08 | |
172 | #define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10 | |
173 | #define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20 | |
174 | #define ALPHA_ELF_LINK_HASH_LU_JSRDIRECT 0x40 | |
175 | #define ALPHA_ELF_LINK_HASH_LU_PLT 0x38 | |
176 | #define ALPHA_ELF_LINK_HASH_TLS_IE 0x80 | |
cc03ec80 | 177 | |
252b5132 | 178 | /* Used to implement multiple .got subsections. */ |
21d799b5 | 179 | struct alpha_elf_got_entry *got_entries; |
252b5132 | 180 | |
571fe01f | 181 | /* Used to count non-got, non-plt relocations for delayed sizing |
252b5132 | 182 | of relocation sections. */ |
21d799b5 | 183 | struct alpha_elf_reloc_entry *reloc_entries; |
252b5132 RH |
184 | }; |
185 | ||
186 | /* Alpha ELF linker hash table. */ | |
187 | ||
188 | struct alpha_elf_link_hash_table | |
189 | { | |
190 | struct elf_link_hash_table root; | |
191 | ||
192 | /* The head of a list of .got subsections linked through | |
193 | alpha_elf_tdata(abfd)->got_link_next. */ | |
194 | bfd *got_list; | |
4a828aab RH |
195 | |
196 | /* The most recent relax pass that we've seen. The GOTs | |
197 | should be regenerated if this doesn't match. */ | |
198 | int relax_trip; | |
252b5132 RH |
199 | }; |
200 | ||
201 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
202 | ||
203 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
204 | ((struct alpha_elf_link_hash_entry *) \ | |
205 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
206 | (copy), (follow))) | |
207 | ||
208 | /* Traverse a Alpha ELF linker hash table. */ | |
209 | ||
210 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
211 | (elf_link_hash_traverse \ | |
212 | (&(table)->root, \ | |
2c3fc389 | 213 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
214 | (info))) |
215 | ||
216 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
217 | ||
218 | #define alpha_elf_hash_table(p) \ | |
4dfe6ac6 NC |
219 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
220 | == ALPHA_ELF_DATA ? ((struct alpha_elf_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 RH |
221 | |
222 | /* Get the object's symbols as our own entry type. */ | |
223 | ||
224 | #define alpha_elf_sym_hashes(abfd) \ | |
225 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
226 | ||
68ffbac6 | 227 | /* Should we do dynamic things to this symbol? This differs from the |
986a241f RH |
228 | generic version in that we never need to consider function pointer |
229 | equality wrt PLT entries -- we don't create a PLT entry if a symbol's | |
230 | address is ever taken. */ | |
252b5132 | 231 | |
986a241f | 232 | static inline bfd_boolean |
a7519a3c RH |
233 | alpha_elf_dynamic_symbol_p (struct elf_link_hash_entry *h, |
234 | struct bfd_link_info *info) | |
8fb35fed | 235 | { |
986a241f | 236 | return _bfd_elf_dynamic_symbol_p (h, info, 0); |
8fb35fed | 237 | } |
252b5132 RH |
238 | |
239 | /* Create an entry in a Alpha ELF linker hash table. */ | |
240 | ||
241 | static struct bfd_hash_entry * | |
a7519a3c RH |
242 | elf64_alpha_link_hash_newfunc (struct bfd_hash_entry *entry, |
243 | struct bfd_hash_table *table, | |
244 | const char *string) | |
252b5132 RH |
245 | { |
246 | struct alpha_elf_link_hash_entry *ret = | |
247 | (struct alpha_elf_link_hash_entry *) entry; | |
248 | ||
249 | /* Allocate the structure if it has not already been allocated by a | |
250 | subclass. */ | |
251 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
252 | ret = ((struct alpha_elf_link_hash_entry *) | |
253 | bfd_hash_allocate (table, | |
254 | sizeof (struct alpha_elf_link_hash_entry))); | |
255 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
256 | return (struct bfd_hash_entry *) ret; | |
257 | ||
258 | /* Call the allocation method of the superclass. */ | |
259 | ret = ((struct alpha_elf_link_hash_entry *) | |
260 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
261 | table, string)); | |
262 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
263 | { | |
264 | /* Set local fields. */ | |
265 | memset (&ret->esym, 0, sizeof (EXTR)); | |
266 | /* We use -2 as a marker to indicate that the information has | |
267 | not been set. -1 means there is no associated ifd. */ | |
268 | ret->esym.ifd = -2; | |
269 | ret->flags = 0; | |
270 | ret->got_entries = NULL; | |
271 | ret->reloc_entries = NULL; | |
272 | } | |
273 | ||
274 | return (struct bfd_hash_entry *) ret; | |
275 | } | |
276 | ||
277 | /* Create a Alpha ELF linker hash table. */ | |
278 | ||
279 | static struct bfd_link_hash_table * | |
a7519a3c | 280 | elf64_alpha_bfd_link_hash_table_create (bfd *abfd) |
252b5132 RH |
281 | { |
282 | struct alpha_elf_link_hash_table *ret; | |
986f0783 | 283 | size_t amt = sizeof (struct alpha_elf_link_hash_table); |
252b5132 | 284 | |
e2d34d7d | 285 | ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
286 | if (ret == (struct alpha_elf_link_hash_table *) NULL) |
287 | return NULL; | |
288 | ||
66eb6687 AM |
289 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
290 | elf64_alpha_link_hash_newfunc, | |
4dfe6ac6 NC |
291 | sizeof (struct alpha_elf_link_hash_entry), |
292 | ALPHA_ELF_DATA)) | |
252b5132 | 293 | { |
e2d34d7d | 294 | free (ret); |
252b5132 RH |
295 | return NULL; |
296 | } | |
297 | ||
298 | return &ret->root.root; | |
299 | } | |
300 | \f | |
698600e4 AM |
301 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line |
302 | routine in order to handle the ECOFF debugging information. */ | |
303 | ||
304 | struct alpha_elf_find_line | |
305 | { | |
306 | struct ecoff_debug_info d; | |
307 | struct ecoff_find_line i; | |
308 | }; | |
309 | ||
252b5132 RH |
310 | /* We have some private fields hanging off of the elf_tdata structure. */ |
311 | ||
312 | struct alpha_elf_obj_tdata | |
313 | { | |
314 | struct elf_obj_tdata root; | |
315 | ||
316 | /* For every input file, these are the got entries for that object's | |
317 | local symbols. */ | |
318 | struct alpha_elf_got_entry ** local_got_entries; | |
319 | ||
320 | /* For every input file, this is the object that owns the got that | |
321 | this input file uses. */ | |
322 | bfd *gotobj; | |
323 | ||
324 | /* For every got, this is a linked list through the objects using this got */ | |
325 | bfd *in_got_link_next; | |
326 | ||
327 | /* For every got, this is a link to the next got subsegment. */ | |
328 | bfd *got_link_next; | |
329 | ||
330 | /* For every got, this is the section. */ | |
331 | asection *got; | |
332 | ||
3765b1be RH |
333 | /* For every got, this is it's total number of words. */ |
334 | int total_got_size; | |
252b5132 | 335 | |
3765b1be | 336 | /* For every got, this is the sum of the number of words required |
252b5132 | 337 | to hold all of the member object's local got. */ |
3765b1be | 338 | int local_got_size; |
698600e4 AM |
339 | |
340 | /* Used by elf64_alpha_find_nearest_line entry point. */ | |
341 | struct alpha_elf_find_line *find_line_info; | |
342 | ||
252b5132 RH |
343 | }; |
344 | ||
345 | #define alpha_elf_tdata(abfd) \ | |
346 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
347 | ||
0ffa91dd NC |
348 | #define is_alpha_elf(bfd) \ |
349 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
350 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 351 | && elf_object_id (bfd) == ALPHA_ELF_DATA) |
0ffa91dd | 352 | |
b34976b6 | 353 | static bfd_boolean |
a7519a3c | 354 | elf64_alpha_mkobject (bfd *abfd) |
252b5132 | 355 | { |
0ffa91dd | 356 | return bfd_elf_allocate_object (abfd, sizeof (struct alpha_elf_obj_tdata), |
4dfe6ac6 | 357 | ALPHA_ELF_DATA); |
252b5132 RH |
358 | } |
359 | ||
b34976b6 | 360 | static bfd_boolean |
a7519a3c | 361 | elf64_alpha_object_p (bfd *abfd) |
252b5132 | 362 | { |
252b5132 RH |
363 | /* Set the right machine number for an Alpha ELF file. */ |
364 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
365 | } | |
366 | \f | |
a7519a3c RH |
367 | /* A relocation function which doesn't do anything. */ |
368 | ||
369 | static bfd_reloc_status_type | |
370 | elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
371 | asymbol *sym ATTRIBUTE_UNUSED, | |
2c3fc389 | 372 | void * data ATTRIBUTE_UNUSED, asection *sec, |
a7519a3c RH |
373 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) |
374 | { | |
375 | if (output_bfd) | |
376 | reloc->address += sec->output_offset; | |
377 | return bfd_reloc_ok; | |
378 | } | |
379 | ||
380 | /* A relocation function used for an unsupported reloc. */ | |
381 | ||
382 | static bfd_reloc_status_type | |
383 | elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, | |
384 | asymbol *sym ATTRIBUTE_UNUSED, | |
2c3fc389 | 385 | void * data ATTRIBUTE_UNUSED, asection *sec, |
a7519a3c RH |
386 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) |
387 | { | |
388 | if (output_bfd) | |
389 | reloc->address += sec->output_offset; | |
390 | return bfd_reloc_notsupported; | |
391 | } | |
392 | ||
393 | /* Do the work of the GPDISP relocation. */ | |
394 | ||
395 | static bfd_reloc_status_type | |
396 | elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah, | |
397 | bfd_byte *p_lda) | |
398 | { | |
399 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
400 | bfd_vma addend; | |
401 | unsigned long i_ldah, i_lda; | |
402 | ||
403 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
404 | i_lda = bfd_get_32 (abfd, p_lda); | |
405 | ||
406 | /* Complain if the instructions are not correct. */ | |
407 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
408 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
409 | ret = bfd_reloc_dangerous; | |
410 | ||
411 | /* Extract the user-supplied offset, mirroring the sign extensions | |
412 | that the instructions perform. */ | |
413 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
414 | addend = (addend ^ 0x80008000) - 0x80008000; | |
415 | ||
416 | gpdisp += addend; | |
417 | ||
418 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
419 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
420 | ret = bfd_reloc_overflow; | |
421 | ||
422 | /* compensate for the sign extension again. */ | |
423 | i_ldah = ((i_ldah & 0xffff0000) | |
424 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
425 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
426 | ||
427 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); | |
428 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
429 | ||
430 | return ret; | |
431 | } | |
432 | ||
433 | /* The special function for the GPDISP reloc. */ | |
434 | ||
435 | static bfd_reloc_status_type | |
436 | elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry, | |
2c3fc389 | 437 | asymbol *sym ATTRIBUTE_UNUSED, void * data, |
a7519a3c RH |
438 | asection *input_section, bfd *output_bfd, |
439 | char **err_msg) | |
440 | { | |
441 | bfd_reloc_status_type ret; | |
442 | bfd_vma gp, relocation; | |
443 | bfd_vma high_address; | |
444 | bfd_byte *p_ldah, *p_lda; | |
445 | ||
446 | /* Don't do anything if we're not doing a final link. */ | |
447 | if (output_bfd) | |
448 | { | |
449 | reloc_entry->address += input_section->output_offset; | |
450 | return bfd_reloc_ok; | |
451 | } | |
452 | ||
453 | high_address = bfd_get_section_limit (abfd, input_section); | |
454 | if (reloc_entry->address > high_address | |
455 | || reloc_entry->address + reloc_entry->addend > high_address) | |
456 | return bfd_reloc_outofrange; | |
457 | ||
458 | /* The gp used in the portion of the output object to which this | |
459 | input object belongs is cached on the input bfd. */ | |
460 | gp = _bfd_get_gp_value (abfd); | |
461 | ||
462 | relocation = (input_section->output_section->vma | |
463 | + input_section->output_offset | |
464 | + reloc_entry->address); | |
465 | ||
466 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
467 | p_lda = p_ldah + reloc_entry->addend; | |
468 | ||
469 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
470 | ||
471 | /* Complain if the instructions are not correct. */ | |
472 | if (ret == bfd_reloc_dangerous) | |
473 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
474 | ||
475 | return ret; | |
476 | } | |
477 | ||
252b5132 RH |
478 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
479 | from smaller values. Start with zero, widen, *then* decrement. */ | |
480 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
481 | ||
21d799b5 | 482 | |
dfe57ca0 | 483 | #define SKIP_HOWTO(N) \ |
21d799b5 | 484 | HOWTO(N, 0, 0, 0, 0, 0, complain_overflow_dont, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) |
dfe57ca0 | 485 | |
252b5132 RH |
486 | static reloc_howto_type elf64_alpha_howto_table[] = |
487 | { | |
488 | HOWTO (R_ALPHA_NONE, /* type */ | |
489 | 0, /* rightshift */ | |
6346d5ca AM |
490 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
491 | 0, /* bitsize */ | |
b34976b6 | 492 | TRUE, /* pc_relative */ |
252b5132 RH |
493 | 0, /* bitpos */ |
494 | complain_overflow_dont, /* complain_on_overflow */ | |
495 | elf64_alpha_reloc_nil, /* special_function */ | |
496 | "NONE", /* name */ | |
b34976b6 | 497 | FALSE, /* partial_inplace */ |
252b5132 RH |
498 | 0, /* src_mask */ |
499 | 0, /* dst_mask */ | |
b34976b6 | 500 | TRUE), /* pcrel_offset */ |
252b5132 RH |
501 | |
502 | /* A 32 bit reference to a symbol. */ | |
503 | HOWTO (R_ALPHA_REFLONG, /* 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 */ | |
bc1bc43f | 510 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 511 | "REFLONG", /* 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 | /* A 64 bit reference to a symbol. */ | |
518 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
519 | 0, /* rightshift */ | |
520 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
521 | 64, /* bitsize */ | |
b34976b6 | 522 | FALSE, /* pc_relative */ |
252b5132 RH |
523 | 0, /* bitpos */ |
524 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 525 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 526 | "REFQUAD", /* name */ |
b34976b6 | 527 | FALSE, /* partial_inplace */ |
252b5132 RH |
528 | MINUS_ONE, /* src_mask */ |
529 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 530 | FALSE), /* pcrel_offset */ |
252b5132 RH |
531 | |
532 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
533 | that when the value is used the value of the gp register will be | |
534 | added in. */ | |
535 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
536 | 0, /* rightshift */ | |
537 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
538 | 32, /* bitsize */ | |
b34976b6 | 539 | FALSE, /* pc_relative */ |
252b5132 RH |
540 | 0, /* bitpos */ |
541 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 542 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 543 | "GPREL32", /* name */ |
b34976b6 | 544 | FALSE, /* partial_inplace */ |
252b5132 RH |
545 | 0xffffffff, /* src_mask */ |
546 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 547 | FALSE), /* pcrel_offset */ |
252b5132 RH |
548 | |
549 | /* Used for an instruction that refers to memory off the GP register. */ | |
550 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
551 | 0, /* rightshift */ | |
dfe57ca0 | 552 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 553 | 16, /* bitsize */ |
b34976b6 | 554 | FALSE, /* pc_relative */ |
252b5132 RH |
555 | 0, /* bitpos */ |
556 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 557 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 558 | "ELF_LITERAL", /* name */ |
b34976b6 | 559 | FALSE, /* partial_inplace */ |
252b5132 RH |
560 | 0xffff, /* src_mask */ |
561 | 0xffff, /* dst_mask */ | |
b34976b6 | 562 | FALSE), /* pcrel_offset */ |
252b5132 RH |
563 | |
564 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
565 | It identifies a use of the literal. The symbol index is special: | |
566 | 1 means the literal address is in the base register of a memory | |
567 | format instruction; 2 means the literal address is in the byte | |
568 | offset register of a byte-manipulation instruction; 3 means the | |
569 | literal address is in the target register of a jsr instruction. | |
570 | This does not actually do any relocation. */ | |
571 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
572 | 0, /* rightshift */ | |
dfe57ca0 | 573 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 574 | 32, /* bitsize */ |
b34976b6 | 575 | FALSE, /* pc_relative */ |
252b5132 RH |
576 | 0, /* bitpos */ |
577 | complain_overflow_dont, /* complain_on_overflow */ | |
578 | elf64_alpha_reloc_nil, /* special_function */ | |
579 | "LITUSE", /* name */ | |
b34976b6 | 580 | FALSE, /* partial_inplace */ |
252b5132 RH |
581 | 0, /* src_mask */ |
582 | 0, /* dst_mask */ | |
b34976b6 | 583 | FALSE), /* pcrel_offset */ |
252b5132 RH |
584 | |
585 | /* Load the gp register. This is always used for a ldah instruction | |
586 | which loads the upper 16 bits of the gp register. The symbol | |
587 | index of the GPDISP instruction is an offset in bytes to the lda | |
588 | instruction that loads the lower 16 bits. The value to use for | |
589 | the relocation is the difference between the GP value and the | |
590 | current location; the load will always be done against a register | |
591 | holding the current address. | |
592 | ||
593 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
594 | any offset is present in the instructions, it is an offset from | |
595 | the register to the ldah instruction. This lets us avoid any | |
596 | stupid hackery like inventing a gp value to do partial relocation | |
597 | against. Also unlike ECOFF, we do the whole relocation off of | |
598 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
599 | space consuming bit, that, since all the information was present | |
600 | in the GPDISP_HI16 reloc. */ | |
601 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
602 | 16, /* rightshift */ | |
603 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
604 | 16, /* bitsize */ | |
b34976b6 | 605 | FALSE, /* pc_relative */ |
252b5132 RH |
606 | 0, /* bitpos */ |
607 | complain_overflow_dont, /* complain_on_overflow */ | |
608 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
609 | "GPDISP", /* name */ | |
b34976b6 | 610 | FALSE, /* partial_inplace */ |
252b5132 RH |
611 | 0xffff, /* src_mask */ |
612 | 0xffff, /* dst_mask */ | |
b34976b6 | 613 | TRUE), /* pcrel_offset */ |
252b5132 RH |
614 | |
615 | /* A 21 bit branch. */ | |
616 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
617 | 2, /* rightshift */ | |
618 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
619 | 21, /* bitsize */ | |
b34976b6 | 620 | TRUE, /* pc_relative */ |
252b5132 RH |
621 | 0, /* bitpos */ |
622 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 623 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 624 | "BRADDR", /* name */ |
b34976b6 | 625 | FALSE, /* partial_inplace */ |
252b5132 RH |
626 | 0x1fffff, /* src_mask */ |
627 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 628 | TRUE), /* pcrel_offset */ |
252b5132 RH |
629 | |
630 | /* A hint for a jump to a register. */ | |
631 | HOWTO (R_ALPHA_HINT, /* type */ | |
632 | 2, /* rightshift */ | |
dfe57ca0 | 633 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 634 | 14, /* bitsize */ |
b34976b6 | 635 | TRUE, /* pc_relative */ |
252b5132 RH |
636 | 0, /* bitpos */ |
637 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 638 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 639 | "HINT", /* name */ |
b34976b6 | 640 | FALSE, /* partial_inplace */ |
252b5132 RH |
641 | 0x3fff, /* src_mask */ |
642 | 0x3fff, /* dst_mask */ | |
b34976b6 | 643 | TRUE), /* pcrel_offset */ |
252b5132 RH |
644 | |
645 | /* 16 bit PC relative offset. */ | |
646 | HOWTO (R_ALPHA_SREL16, /* type */ | |
647 | 0, /* rightshift */ | |
648 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
649 | 16, /* bitsize */ | |
b34976b6 | 650 | TRUE, /* pc_relative */ |
252b5132 RH |
651 | 0, /* bitpos */ |
652 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 653 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 654 | "SREL16", /* name */ |
b34976b6 | 655 | FALSE, /* partial_inplace */ |
252b5132 RH |
656 | 0xffff, /* src_mask */ |
657 | 0xffff, /* dst_mask */ | |
b34976b6 | 658 | TRUE), /* pcrel_offset */ |
252b5132 RH |
659 | |
660 | /* 32 bit PC relative offset. */ | |
661 | HOWTO (R_ALPHA_SREL32, /* type */ | |
662 | 0, /* rightshift */ | |
663 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
664 | 32, /* bitsize */ | |
b34976b6 | 665 | TRUE, /* pc_relative */ |
252b5132 RH |
666 | 0, /* bitpos */ |
667 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 668 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 669 | "SREL32", /* name */ |
b34976b6 | 670 | FALSE, /* partial_inplace */ |
252b5132 RH |
671 | 0xffffffff, /* src_mask */ |
672 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 673 | TRUE), /* pcrel_offset */ |
252b5132 RH |
674 | |
675 | /* A 64 bit PC relative offset. */ | |
676 | HOWTO (R_ALPHA_SREL64, /* type */ | |
677 | 0, /* rightshift */ | |
678 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
679 | 64, /* bitsize */ | |
b34976b6 | 680 | TRUE, /* pc_relative */ |
252b5132 RH |
681 | 0, /* bitpos */ |
682 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 683 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 684 | "SREL64", /* name */ |
b34976b6 | 685 | FALSE, /* partial_inplace */ |
252b5132 RH |
686 | MINUS_ONE, /* src_mask */ |
687 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 688 | TRUE), /* pcrel_offset */ |
252b5132 | 689 | |
dfe57ca0 RH |
690 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
691 | SKIP_HOWTO (12), | |
692 | SKIP_HOWTO (13), | |
693 | SKIP_HOWTO (14), | |
694 | SKIP_HOWTO (15), | |
695 | SKIP_HOWTO (16), | |
252b5132 RH |
696 | |
697 | /* The high 16 bits of the displacement from GP to the target. */ | |
698 | HOWTO (R_ALPHA_GPRELHIGH, | |
699 | 0, /* rightshift */ | |
dfe57ca0 | 700 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 701 | 16, /* bitsize */ |
b34976b6 | 702 | FALSE, /* pc_relative */ |
252b5132 RH |
703 | 0, /* bitpos */ |
704 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 705 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 706 | "GPRELHIGH", /* name */ |
b34976b6 | 707 | FALSE, /* partial_inplace */ |
252b5132 RH |
708 | 0xffff, /* src_mask */ |
709 | 0xffff, /* dst_mask */ | |
b34976b6 | 710 | FALSE), /* pcrel_offset */ |
252b5132 RH |
711 | |
712 | /* The low 16 bits of the displacement from GP to the target. */ | |
713 | HOWTO (R_ALPHA_GPRELLOW, | |
714 | 0, /* rightshift */ | |
dfe57ca0 | 715 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 716 | 16, /* bitsize */ |
b34976b6 | 717 | FALSE, /* pc_relative */ |
252b5132 RH |
718 | 0, /* bitpos */ |
719 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 720 | bfd_elf_generic_reloc, /* special_function */ |
252b5132 | 721 | "GPRELLOW", /* name */ |
b34976b6 | 722 | FALSE, /* partial_inplace */ |
252b5132 RH |
723 | 0xffff, /* src_mask */ |
724 | 0xffff, /* dst_mask */ | |
b34976b6 | 725 | FALSE), /* pcrel_offset */ |
252b5132 RH |
726 | |
727 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 728 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 729 | 0, /* rightshift */ |
dfe57ca0 | 730 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 731 | 16, /* bitsize */ |
b34976b6 | 732 | FALSE, /* pc_relative */ |
252b5132 RH |
733 | 0, /* bitpos */ |
734 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 735 | bfd_elf_generic_reloc, /* special_function */ |
dfe57ca0 | 736 | "GPREL16", /* name */ |
b34976b6 | 737 | FALSE, /* partial_inplace */ |
252b5132 RH |
738 | 0xffff, /* src_mask */ |
739 | 0xffff, /* dst_mask */ | |
b34976b6 | 740 | FALSE), /* pcrel_offset */ |
252b5132 | 741 | |
dfe57ca0 RH |
742 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
743 | SKIP_HOWTO (20), | |
744 | SKIP_HOWTO (21), | |
745 | SKIP_HOWTO (22), | |
746 | SKIP_HOWTO (23), | |
252b5132 | 747 | |
fe8bc63d | 748 | /* Misc ELF relocations. */ |
252b5132 RH |
749 | |
750 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
751 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
752 | is present because every other ELF has one, but should not be used | |
753 | because .dynbss is an ugly thing. */ | |
754 | HOWTO (R_ALPHA_COPY, | |
755 | 0, | |
756 | 0, | |
757 | 0, | |
b34976b6 | 758 | FALSE, |
252b5132 RH |
759 | 0, |
760 | complain_overflow_dont, | |
761 | bfd_elf_generic_reloc, | |
762 | "COPY", | |
b34976b6 | 763 | FALSE, |
252b5132 RH |
764 | 0, |
765 | 0, | |
b34976b6 | 766 | TRUE), |
252b5132 RH |
767 | |
768 | /* A dynamic relocation for a .got entry. */ | |
769 | HOWTO (R_ALPHA_GLOB_DAT, | |
770 | 0, | |
771 | 0, | |
772 | 0, | |
b34976b6 | 773 | FALSE, |
252b5132 RH |
774 | 0, |
775 | complain_overflow_dont, | |
776 | bfd_elf_generic_reloc, | |
777 | "GLOB_DAT", | |
b34976b6 | 778 | FALSE, |
252b5132 RH |
779 | 0, |
780 | 0, | |
b34976b6 | 781 | TRUE), |
252b5132 RH |
782 | |
783 | /* A dynamic relocation for a .plt entry. */ | |
784 | HOWTO (R_ALPHA_JMP_SLOT, | |
785 | 0, | |
786 | 0, | |
787 | 0, | |
b34976b6 | 788 | FALSE, |
252b5132 RH |
789 | 0, |
790 | complain_overflow_dont, | |
791 | bfd_elf_generic_reloc, | |
792 | "JMP_SLOT", | |
b34976b6 | 793 | FALSE, |
252b5132 RH |
794 | 0, |
795 | 0, | |
b34976b6 | 796 | TRUE), |
252b5132 RH |
797 | |
798 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
799 | HOWTO (R_ALPHA_RELATIVE, | |
800 | 0, | |
801 | 0, | |
802 | 0, | |
b34976b6 | 803 | FALSE, |
252b5132 RH |
804 | 0, |
805 | complain_overflow_dont, | |
806 | bfd_elf_generic_reloc, | |
807 | "RELATIVE", | |
b34976b6 | 808 | FALSE, |
252b5132 RH |
809 | 0, |
810 | 0, | |
b34976b6 | 811 | TRUE), |
7793f4d0 RH |
812 | |
813 | /* A 21 bit branch that adjusts for gp loads. */ | |
814 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
815 | 2, /* rightshift */ | |
816 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
817 | 21, /* bitsize */ | |
b34976b6 | 818 | TRUE, /* pc_relative */ |
7793f4d0 RH |
819 | 0, /* bitpos */ |
820 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 821 | bfd_elf_generic_reloc, /* special_function */ |
7793f4d0 | 822 | "BRSGP", /* name */ |
b34976b6 | 823 | FALSE, /* partial_inplace */ |
7793f4d0 RH |
824 | 0x1fffff, /* src_mask */ |
825 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 826 | TRUE), /* pcrel_offset */ |
3765b1be RH |
827 | |
828 | /* Creates a tls_index for the symbol in the got. */ | |
829 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
830 | 0, /* rightshift */ | |
831 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
832 | 16, /* bitsize */ | |
b34976b6 | 833 | FALSE, /* pc_relative */ |
3765b1be RH |
834 | 0, /* bitpos */ |
835 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 836 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 837 | "TLSGD", /* name */ |
b34976b6 | 838 | FALSE, /* partial_inplace */ |
3765b1be RH |
839 | 0xffff, /* src_mask */ |
840 | 0xffff, /* dst_mask */ | |
b34976b6 | 841 | FALSE), /* pcrel_offset */ |
3765b1be RH |
842 | |
843 | /* Creates a tls_index for the (current) module in the got. */ | |
844 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
845 | 0, /* rightshift */ | |
846 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
847 | 16, /* bitsize */ | |
b34976b6 | 848 | FALSE, /* pc_relative */ |
3765b1be RH |
849 | 0, /* bitpos */ |
850 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 851 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 852 | "TLSLDM", /* name */ |
b34976b6 | 853 | FALSE, /* partial_inplace */ |
3765b1be RH |
854 | 0xffff, /* src_mask */ |
855 | 0xffff, /* dst_mask */ | |
b34976b6 | 856 | FALSE), /* pcrel_offset */ |
3765b1be RH |
857 | |
858 | /* A dynamic relocation for a DTP module entry. */ | |
859 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
860 | 0, /* rightshift */ | |
861 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
862 | 64, /* bitsize */ | |
b34976b6 | 863 | FALSE, /* pc_relative */ |
3765b1be RH |
864 | 0, /* bitpos */ |
865 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 866 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 867 | "DTPMOD64", /* name */ |
b34976b6 | 868 | FALSE, /* partial_inplace */ |
3765b1be RH |
869 | MINUS_ONE, /* src_mask */ |
870 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 871 | FALSE), /* pcrel_offset */ |
3765b1be RH |
872 | |
873 | /* Creates a 64-bit offset in the got for the displacement | |
874 | from DTP to the target. */ | |
875 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
876 | 0, /* rightshift */ | |
877 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
878 | 16, /* bitsize */ | |
b34976b6 | 879 | FALSE, /* pc_relative */ |
3765b1be RH |
880 | 0, /* bitpos */ |
881 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 882 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 883 | "GOTDTPREL", /* name */ |
b34976b6 | 884 | FALSE, /* partial_inplace */ |
3765b1be RH |
885 | 0xffff, /* src_mask */ |
886 | 0xffff, /* dst_mask */ | |
b34976b6 | 887 | FALSE), /* pcrel_offset */ |
3765b1be RH |
888 | |
889 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
890 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
891 | 0, /* rightshift */ | |
892 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
893 | 64, /* bitsize */ | |
b34976b6 | 894 | FALSE, /* pc_relative */ |
3765b1be RH |
895 | 0, /* bitpos */ |
896 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 897 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 898 | "DTPREL64", /* name */ |
b34976b6 | 899 | FALSE, /* partial_inplace */ |
3765b1be RH |
900 | MINUS_ONE, /* src_mask */ |
901 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 902 | FALSE), /* pcrel_offset */ |
3765b1be RH |
903 | |
904 | /* The high 16 bits of the displacement from DTP to the target. */ | |
905 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
906 | 0, /* rightshift */ | |
907 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
908 | 16, /* bitsize */ | |
b34976b6 | 909 | FALSE, /* pc_relative */ |
3765b1be RH |
910 | 0, /* bitpos */ |
911 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 912 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 913 | "DTPRELHI", /* name */ |
b34976b6 | 914 | FALSE, /* partial_inplace */ |
3765b1be RH |
915 | 0xffff, /* src_mask */ |
916 | 0xffff, /* dst_mask */ | |
b34976b6 | 917 | FALSE), /* pcrel_offset */ |
3765b1be RH |
918 | |
919 | /* The low 16 bits of the displacement from DTP to the target. */ | |
920 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
921 | 0, /* rightshift */ | |
922 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
923 | 16, /* bitsize */ | |
b34976b6 | 924 | FALSE, /* pc_relative */ |
3765b1be RH |
925 | 0, /* bitpos */ |
926 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 927 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 928 | "DTPRELLO", /* name */ |
b34976b6 | 929 | FALSE, /* partial_inplace */ |
3765b1be RH |
930 | 0xffff, /* src_mask */ |
931 | 0xffff, /* dst_mask */ | |
b34976b6 | 932 | FALSE), /* pcrel_offset */ |
3765b1be RH |
933 | |
934 | /* A 16-bit displacement from DTP to the target. */ | |
935 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
936 | 0, /* rightshift */ | |
937 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
938 | 16, /* bitsize */ | |
b34976b6 | 939 | FALSE, /* pc_relative */ |
3765b1be RH |
940 | 0, /* bitpos */ |
941 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 942 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 943 | "DTPREL16", /* name */ |
b34976b6 | 944 | FALSE, /* partial_inplace */ |
3765b1be RH |
945 | 0xffff, /* src_mask */ |
946 | 0xffff, /* dst_mask */ | |
b34976b6 | 947 | FALSE), /* pcrel_offset */ |
3765b1be RH |
948 | |
949 | /* Creates a 64-bit offset in the got for the displacement | |
950 | from TP to the target. */ | |
951 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
952 | 0, /* rightshift */ | |
953 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
954 | 16, /* bitsize */ | |
b34976b6 | 955 | FALSE, /* pc_relative */ |
3765b1be RH |
956 | 0, /* bitpos */ |
957 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 958 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 959 | "GOTTPREL", /* name */ |
b34976b6 | 960 | FALSE, /* partial_inplace */ |
3765b1be RH |
961 | 0xffff, /* src_mask */ |
962 | 0xffff, /* dst_mask */ | |
b34976b6 | 963 | FALSE), /* pcrel_offset */ |
3765b1be RH |
964 | |
965 | /* A dynamic relocation for a displacement from TP to the target. */ | |
966 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
967 | 0, /* rightshift */ | |
968 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
969 | 64, /* bitsize */ | |
b34976b6 | 970 | FALSE, /* pc_relative */ |
3765b1be RH |
971 | 0, /* bitpos */ |
972 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bc1bc43f | 973 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 974 | "TPREL64", /* name */ |
b34976b6 | 975 | FALSE, /* partial_inplace */ |
3765b1be RH |
976 | MINUS_ONE, /* src_mask */ |
977 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 978 | FALSE), /* pcrel_offset */ |
3765b1be RH |
979 | |
980 | /* The high 16 bits of the displacement from TP to the target. */ | |
981 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
982 | 0, /* rightshift */ | |
983 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
984 | 16, /* bitsize */ | |
b34976b6 | 985 | FALSE, /* pc_relative */ |
3765b1be RH |
986 | 0, /* bitpos */ |
987 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 988 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 989 | "TPRELHI", /* name */ |
b34976b6 | 990 | FALSE, /* partial_inplace */ |
3765b1be RH |
991 | 0xffff, /* src_mask */ |
992 | 0xffff, /* dst_mask */ | |
b34976b6 | 993 | FALSE), /* pcrel_offset */ |
3765b1be RH |
994 | |
995 | /* The low 16 bits of the displacement from TP to the target. */ | |
996 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
997 | 0, /* rightshift */ | |
998 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
999 | 16, /* bitsize */ | |
b34976b6 | 1000 | FALSE, /* pc_relative */ |
3765b1be RH |
1001 | 0, /* bitpos */ |
1002 | complain_overflow_dont, /* complain_on_overflow */ | |
bc1bc43f | 1003 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 1004 | "TPRELLO", /* name */ |
b34976b6 | 1005 | FALSE, /* partial_inplace */ |
3765b1be RH |
1006 | 0xffff, /* src_mask */ |
1007 | 0xffff, /* dst_mask */ | |
b34976b6 | 1008 | FALSE), /* pcrel_offset */ |
3765b1be RH |
1009 | |
1010 | /* A 16-bit displacement from TP to the target. */ | |
1011 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
1012 | 0, /* rightshift */ | |
1013 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1014 | 16, /* bitsize */ | |
b34976b6 | 1015 | FALSE, /* pc_relative */ |
3765b1be RH |
1016 | 0, /* bitpos */ |
1017 | complain_overflow_signed, /* complain_on_overflow */ | |
bc1bc43f | 1018 | bfd_elf_generic_reloc, /* special_function */ |
3765b1be | 1019 | "TPREL16", /* name */ |
b34976b6 | 1020 | FALSE, /* partial_inplace */ |
3765b1be RH |
1021 | 0xffff, /* src_mask */ |
1022 | 0xffff, /* dst_mask */ | |
b34976b6 | 1023 | FALSE), /* pcrel_offset */ |
252b5132 RH |
1024 | }; |
1025 | ||
252b5132 RH |
1026 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
1027 | ||
1028 | struct elf_reloc_map | |
1029 | { | |
1030 | bfd_reloc_code_real_type bfd_reloc_val; | |
1031 | int elf_reloc_val; | |
1032 | }; | |
1033 | ||
1034 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
1035 | { | |
dfe57ca0 RH |
1036 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
1037 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
1038 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
1039 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
1040 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
1041 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
1042 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
1043 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
1044 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
1045 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
1046 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
1047 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
1048 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
1049 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
1050 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
1051 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 1052 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
1053 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
1054 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
1055 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
1056 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
1057 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
1058 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
1059 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
1060 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
1061 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
1062 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
1063 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
1064 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
1065 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
1066 | }; |
1067 | ||
1068 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
1069 | ||
1070 | static reloc_howto_type * | |
a7519a3c RH |
1071 | elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1072 | bfd_reloc_code_real_type code) | |
252b5132 RH |
1073 | { |
1074 | const struct elf_reloc_map *i, *e; | |
1075 | i = e = elf64_alpha_reloc_map; | |
1076 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
1077 | for (; i != e; ++i) | |
1078 | { | |
1079 | if (i->bfd_reloc_val == code) | |
1080 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
1081 | } | |
1082 | return 0; | |
1083 | } | |
1084 | ||
157090f7 AM |
1085 | static reloc_howto_type * |
1086 | elf64_alpha_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1087 | const char *r_name) | |
1088 | { | |
1089 | unsigned int i; | |
1090 | ||
1091 | for (i = 0; | |
1092 | i < (sizeof (elf64_alpha_howto_table) | |
1093 | / sizeof (elf64_alpha_howto_table[0])); | |
1094 | i++) | |
1095 | if (elf64_alpha_howto_table[i].name != NULL | |
1096 | && strcasecmp (elf64_alpha_howto_table[i].name, r_name) == 0) | |
1097 | return &elf64_alpha_howto_table[i]; | |
1098 | ||
1099 | return NULL; | |
1100 | } | |
1101 | ||
252b5132 RH |
1102 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ |
1103 | ||
f3185997 | 1104 | static bfd_boolean |
0aa13fee | 1105 | elf64_alpha_info_to_howto (bfd *abfd, arelent *cache_ptr, |
a7519a3c | 1106 | Elf_Internal_Rela *dst) |
252b5132 | 1107 | { |
a7519a3c | 1108 | unsigned r_type = ELF64_R_TYPE(dst->r_info); |
cd21f5da NC |
1109 | |
1110 | if (r_type >= R_ALPHA_max) | |
1111 | { | |
695344c0 | 1112 | /* xgettext:c-format */ |
0aa13fee | 1113 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 1114 | abfd, r_type); |
cd21f5da | 1115 | bfd_set_error (bfd_error_bad_value); |
f3185997 | 1116 | return FALSE; |
cd21f5da | 1117 | } |
252b5132 | 1118 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; |
f3185997 | 1119 | return TRUE; |
252b5132 | 1120 | } |
3765b1be RH |
1121 | |
1122 | /* These two relocations create a two-word entry in the got. */ | |
1123 | #define alpha_got_entry_size(r_type) \ | |
1124 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1125 | |
1126 | /* This is PT_TLS segment p_vaddr. */ | |
e1918d23 AM |
1127 | #define alpha_get_dtprel_base(info) \ |
1128 | (elf_hash_table (info)->tls_sec->vma) | |
9e756d64 RH |
1129 | |
1130 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1131 | is assigned offset round(16, PT_TLS p_align). */ | |
e1918d23 AM |
1132 | #define alpha_get_tprel_base(info) \ |
1133 | (elf_hash_table (info)->tls_sec->vma \ | |
1134 | - align_power ((bfd_vma) 16, \ | |
1135 | elf_hash_table (info)->tls_sec->alignment_power)) | |
252b5132 | 1136 | \f |
a7519a3c RH |
1137 | /* Handle an Alpha specific section when reading an object file. This |
1138 | is called when bfd_section_from_shdr finds a section with an unknown | |
1139 | type. | |
1140 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure | |
1141 | how to. */ | |
252b5132 | 1142 | |
a7519a3c RH |
1143 | static bfd_boolean |
1144 | elf64_alpha_section_from_shdr (bfd *abfd, | |
1145 | Elf_Internal_Shdr *hdr, | |
1146 | const char *name, | |
1147 | int shindex) | |
252b5132 | 1148 | { |
a7519a3c RH |
1149 | asection *newsect; |
1150 | ||
1151 | /* There ought to be a place to keep ELF backend specific flags, but | |
1152 | at the moment there isn't one. We just keep track of the | |
1153 | sections by their name, instead. Fortunately, the ABI gives | |
1154 | suggested names for all the MIPS specific sections, so we will | |
1155 | probably get away with this. */ | |
1156 | switch (hdr->sh_type) | |
1157 | { | |
1158 | case SHT_ALPHA_DEBUG: | |
1159 | if (strcmp (name, ".mdebug") != 0) | |
1160 | return FALSE; | |
1161 | break; | |
1162 | default: | |
1163 | return FALSE; | |
1164 | } | |
252b5132 | 1165 | |
a7519a3c RH |
1166 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
1167 | return FALSE; | |
1168 | newsect = hdr->bfd_section; | |
252b5132 | 1169 | |
a7519a3c | 1170 | if (hdr->sh_type == SHT_ALPHA_DEBUG) |
252b5132 | 1171 | { |
fd361982 AM |
1172 | if (!bfd_set_section_flags (newsect, |
1173 | bfd_section_flags (newsect) | SEC_DEBUGGING)) | |
a7519a3c | 1174 | return FALSE; |
252b5132 | 1175 | } |
a7519a3c RH |
1176 | |
1177 | return TRUE; | |
252b5132 RH |
1178 | } |
1179 | ||
a7519a3c RH |
1180 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
1181 | ||
b34976b6 | 1182 | static bfd_boolean |
8c803a2d | 1183 | elf64_alpha_section_flags (const Elf_Internal_Shdr *hdr) |
252b5132 | 1184 | { |
a7519a3c | 1185 | if (hdr->sh_flags & SHF_ALPHA_GPREL) |
8c803a2d | 1186 | hdr->bfd_section->flags |= SEC_SMALL_DATA; |
252b5132 | 1187 | |
a7519a3c RH |
1188 | return TRUE; |
1189 | } | |
252b5132 | 1190 | |
a7519a3c RH |
1191 | /* Set the correct type for an Alpha ELF section. We do this by the |
1192 | section name, which is a hack, but ought to work. */ | |
9e756d64 | 1193 | |
a7519a3c RH |
1194 | static bfd_boolean |
1195 | elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) | |
1196 | { | |
1197 | register const char *name; | |
1198 | ||
fd361982 | 1199 | name = bfd_section_name (sec); |
a7519a3c RH |
1200 | |
1201 | if (strcmp (name, ".mdebug") == 0) | |
252b5132 | 1202 | { |
a7519a3c RH |
1203 | hdr->sh_type = SHT_ALPHA_DEBUG; |
1204 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
07d6d2b8 | 1205 | entsize of 0. FIXME: Does this matter? */ |
a7519a3c RH |
1206 | if ((abfd->flags & DYNAMIC) != 0 ) |
1207 | hdr->sh_entsize = 0; | |
1208 | else | |
1209 | hdr->sh_entsize = 1; | |
252b5132 | 1210 | } |
a7519a3c RH |
1211 | else if ((sec->flags & SEC_SMALL_DATA) |
1212 | || strcmp (name, ".sdata") == 0 | |
1213 | || strcmp (name, ".sbss") == 0 | |
1214 | || strcmp (name, ".lit4") == 0 | |
1215 | || strcmp (name, ".lit8") == 0) | |
1216 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
252b5132 | 1217 | |
a7519a3c RH |
1218 | return TRUE; |
1219 | } | |
252b5132 | 1220 | |
a7519a3c RH |
1221 | /* Hook called by the linker routine which adds symbols from an object |
1222 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1223 | ||
1224 | static bfd_boolean | |
1225 | elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
1226 | Elf_Internal_Sym *sym, | |
1227 | const char **namep ATTRIBUTE_UNUSED, | |
1228 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1229 | asection **secp, bfd_vma *valp) | |
1230 | { | |
1231 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 1232 | && !bfd_link_relocatable (info) |
a7519a3c | 1233 | && sym->st_size <= elf_gp_size (abfd)) |
252b5132 | 1234 | { |
a7519a3c RH |
1235 | /* Common symbols less than or equal to -G nn bytes are |
1236 | automatically put into .sbss. */ | |
ffcb7aff | 1237 | |
a7519a3c | 1238 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
252b5132 | 1239 | |
a7519a3c | 1240 | if (scomm == NULL) |
252b5132 | 1241 | { |
a7519a3c RH |
1242 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
1243 | (SEC_ALLOC | |
1244 | | SEC_IS_COMMON | |
1245 | | SEC_LINKER_CREATED)); | |
1246 | if (scomm == NULL) | |
1247 | return FALSE; | |
1248 | } | |
ffcb7aff | 1249 | |
a7519a3c RH |
1250 | *secp = scomm; |
1251 | *valp = sym->st_size; | |
1252 | } | |
ffcb7aff | 1253 | |
a7519a3c RH |
1254 | return TRUE; |
1255 | } | |
252b5132 | 1256 | |
a7519a3c | 1257 | /* Create the .got section. */ |
252b5132 | 1258 | |
a7519a3c RH |
1259 | static bfd_boolean |
1260 | elf64_alpha_create_got_section (bfd *abfd, | |
1261 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1262 | { | |
85d162e6 | 1263 | flagword flags; |
a7519a3c | 1264 | asection *s; |
252b5132 | 1265 | |
0ffa91dd NC |
1266 | if (! is_alpha_elf (abfd)) |
1267 | return FALSE; | |
1268 | ||
85d162e6 AM |
1269 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1270 | | SEC_LINKER_CREATED); | |
1271 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
a7519a3c | 1272 | if (s == NULL |
fd361982 | 1273 | || !bfd_set_section_alignment (s, 3)) |
a7519a3c | 1274 | return FALSE; |
252b5132 | 1275 | |
a7519a3c | 1276 | alpha_elf_tdata (abfd)->got = s; |
252b5132 | 1277 | |
85d162e6 AM |
1278 | /* Make sure the object's gotobj is set to itself so that we default |
1279 | to every object with its own .got. We'll merge .gots later once | |
1280 | we've collected each object's info. */ | |
1281 | alpha_elf_tdata (abfd)->gotobj = abfd; | |
1282 | ||
a7519a3c RH |
1283 | return TRUE; |
1284 | } | |
252b5132 | 1285 | |
a7519a3c | 1286 | /* Create all the dynamic sections. */ |
252b5132 | 1287 | |
a7519a3c RH |
1288 | static bfd_boolean |
1289 | elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
1290 | { | |
1291 | asection *s; | |
85d162e6 | 1292 | flagword flags; |
a7519a3c | 1293 | struct elf_link_hash_entry *h; |
252b5132 | 1294 | |
0ffa91dd NC |
1295 | if (! is_alpha_elf (abfd)) |
1296 | return FALSE; | |
1297 | ||
a7519a3c | 1298 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ |
252b5132 | 1299 | |
85d162e6 AM |
1300 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1301 | | SEC_LINKER_CREATED | |
1302 | | (elf64_alpha_use_secureplt ? SEC_READONLY : 0)); | |
1303 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags); | |
ce558b89 | 1304 | elf_hash_table (info)->splt = s; |
fd361982 | 1305 | if (s == NULL || ! bfd_set_section_alignment (s, 4)) |
a7519a3c | 1306 | return FALSE; |
252b5132 | 1307 | |
a7519a3c RH |
1308 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
1309 | .plt section. */ | |
7325306f RS |
1310 | h = _bfd_elf_define_linkage_sym (abfd, info, s, |
1311 | "_PROCEDURE_LINKAGE_TABLE_"); | |
1312 | elf_hash_table (info)->hplt = h; | |
1313 | if (h == NULL) | |
a7519a3c | 1314 | return FALSE; |
d6ad34f6 | 1315 | |
85d162e6 AM |
1316 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1317 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1318 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.plt", flags); | |
ce558b89 | 1319 | elf_hash_table (info)->srelplt = s; |
fd361982 | 1320 | if (s == NULL || ! bfd_set_section_alignment (s, 3)) |
a7519a3c | 1321 | return FALSE; |
252b5132 | 1322 | |
6ec7057a RH |
1323 | if (elf64_alpha_use_secureplt) |
1324 | { | |
85d162e6 AM |
1325 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
1326 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
ce558b89 | 1327 | elf_hash_table (info)->sgotplt = s; |
fd361982 | 1328 | if (s == NULL || ! bfd_set_section_alignment (s, 3)) |
6ec7057a RH |
1329 | return FALSE; |
1330 | } | |
1331 | ||
a7519a3c RH |
1332 | /* We may or may not have created a .got section for this object, but |
1333 | we definitely havn't done the rest of the work. */ | |
1cd6895c | 1334 | |
85d162e6 AM |
1335 | if (alpha_elf_tdata(abfd)->gotobj == NULL) |
1336 | { | |
1337 | if (!elf64_alpha_create_got_section (abfd, info)) | |
1338 | return FALSE; | |
1339 | } | |
1cd6895c | 1340 | |
85d162e6 AM |
1341 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1342 | | SEC_LINKER_CREATED | SEC_READONLY); | |
1343 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.got", flags); | |
ce558b89 | 1344 | elf_hash_table (info)->srelgot = s; |
a7519a3c | 1345 | if (s == NULL |
fd361982 | 1346 | || !bfd_set_section_alignment (s, 3)) |
a7519a3c | 1347 | return FALSE; |
252b5132 | 1348 | |
a7519a3c RH |
1349 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
1350 | dynobj's .got section. We don't do this in the linker script | |
1351 | because we don't want to define the symbol if we are not creating | |
1352 | a global offset table. */ | |
d98685ac AM |
1353 | h = _bfd_elf_define_linkage_sym (abfd, info, alpha_elf_tdata(abfd)->got, |
1354 | "_GLOBAL_OFFSET_TABLE_"); | |
a7519a3c | 1355 | elf_hash_table (info)->hgot = h; |
d98685ac AM |
1356 | if (h == NULL) |
1357 | return FALSE; | |
252b5132 | 1358 | |
a7519a3c | 1359 | return TRUE; |
252b5132 | 1360 | } |
a7519a3c RH |
1361 | \f |
1362 | /* Read ECOFF debugging information from a .mdebug section into a | |
1363 | ecoff_debug_info structure. */ | |
252b5132 | 1364 | |
a7519a3c RH |
1365 | static bfd_boolean |
1366 | elf64_alpha_read_ecoff_info (bfd *abfd, asection *section, | |
1367 | struct ecoff_debug_info *debug) | |
252b5132 | 1368 | { |
a7519a3c RH |
1369 | HDRR *symhdr; |
1370 | const struct ecoff_debug_swap *swap; | |
1371 | char *ext_hdr = NULL; | |
252b5132 | 1372 | |
a7519a3c RH |
1373 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
1374 | memset (debug, 0, sizeof (*debug)); | |
252b5132 | 1375 | |
a7519a3c RH |
1376 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
1377 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1378 | goto error_return; | |
252b5132 | 1379 | |
a7519a3c RH |
1380 | if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
1381 | swap->external_hdr_size)) | |
1382 | goto error_return; | |
252b5132 | 1383 | |
a7519a3c RH |
1384 | symhdr = &debug->symbolic_header; |
1385 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
252b5132 | 1386 | |
a7519a3c RH |
1387 | /* The symbolic header contains absolute file offsets and sizes to |
1388 | read. */ | |
1389 | #define READ(ptr, offset, count, size, type) \ | |
1f4361a7 | 1390 | do \ |
a7519a3c | 1391 | { \ |
1f4361a7 AM |
1392 | size_t amt; \ |
1393 | debug->ptr = NULL; \ | |
1394 | if (symhdr->count == 0) \ | |
1395 | break; \ | |
1396 | if (_bfd_mul_overflow (size, symhdr->count, &amt)) \ | |
1397 | { \ | |
1398 | bfd_set_error (bfd_error_file_too_big); \ | |
1399 | goto error_return; \ | |
1400 | } \ | |
2bb3687b | 1401 | if (bfd_seek (abfd, symhdr->offset, SEEK_SET) != 0) \ |
a7519a3c | 1402 | goto error_return; \ |
2bb3687b AM |
1403 | debug->ptr = (type) _bfd_malloc_and_read (abfd, amt, amt); \ |
1404 | if (debug->ptr == NULL) \ | |
a7519a3c | 1405 | goto error_return; \ |
1f4361a7 | 1406 | } while (0) |
fe8bc63d | 1407 | |
a7519a3c | 1408 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); |
2c3fc389 NC |
1409 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); |
1410 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); | |
1411 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); | |
1412 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); | |
a7519a3c RH |
1413 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
1414 | union aux_ext *); | |
1415 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1416 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
2c3fc389 NC |
1417 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); |
1418 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); | |
1419 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); | |
a7519a3c | 1420 | #undef READ |
252b5132 | 1421 | |
a7519a3c | 1422 | debug->fdr = NULL; |
252b5132 | 1423 | |
a7519a3c | 1424 | return TRUE; |
252b5132 | 1425 | |
a7519a3c RH |
1426 | error_return: |
1427 | if (ext_hdr != NULL) | |
1428 | free (ext_hdr); | |
1429 | if (debug->line != NULL) | |
1430 | free (debug->line); | |
1431 | if (debug->external_dnr != NULL) | |
1432 | free (debug->external_dnr); | |
1433 | if (debug->external_pdr != NULL) | |
1434 | free (debug->external_pdr); | |
1435 | if (debug->external_sym != NULL) | |
1436 | free (debug->external_sym); | |
1437 | if (debug->external_opt != NULL) | |
1438 | free (debug->external_opt); | |
1439 | if (debug->external_aux != NULL) | |
1440 | free (debug->external_aux); | |
1441 | if (debug->ss != NULL) | |
1442 | free (debug->ss); | |
1443 | if (debug->ssext != NULL) | |
1444 | free (debug->ssext); | |
1445 | if (debug->external_fdr != NULL) | |
1446 | free (debug->external_fdr); | |
1447 | if (debug->external_rfd != NULL) | |
1448 | free (debug->external_rfd); | |
1449 | if (debug->external_ext != NULL) | |
1450 | free (debug->external_ext); | |
1451 | return FALSE; | |
252b5132 RH |
1452 | } |
1453 | ||
a7519a3c RH |
1454 | /* Alpha ELF local labels start with '$'. */ |
1455 | ||
b34976b6 | 1456 | static bfd_boolean |
a7519a3c | 1457 | elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
252b5132 | 1458 | { |
a7519a3c RH |
1459 | return name[0] == '$'; |
1460 | } | |
9e756d64 | 1461 | |
a7519a3c | 1462 | static bfd_boolean |
fb167eb2 AM |
1463 | elf64_alpha_find_nearest_line (bfd *abfd, asymbol **symbols, |
1464 | asection *section, bfd_vma offset, | |
1465 | const char **filename_ptr, | |
a7519a3c | 1466 | const char **functionname_ptr, |
fb167eb2 AM |
1467 | unsigned int *line_ptr, |
1468 | unsigned int *discriminator_ptr) | |
a7519a3c RH |
1469 | { |
1470 | asection *msec; | |
252b5132 | 1471 | |
fb167eb2 | 1472 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a7519a3c | 1473 | filename_ptr, functionname_ptr, |
fb167eb2 | 1474 | line_ptr, discriminator_ptr, |
9defd221 | 1475 | dwarf_debug_sections, |
7f3bf384 AM |
1476 | &elf_tdata (abfd)->dwarf2_find_line_info) |
1477 | == 1) | |
b34976b6 | 1478 | return TRUE; |
9e756d64 | 1479 | |
a7519a3c RH |
1480 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
1481 | if (msec != NULL) | |
1bbc9cec | 1482 | { |
a7519a3c | 1483 | flagword origflags; |
698600e4 | 1484 | struct alpha_elf_find_line *fi; |
a7519a3c RH |
1485 | const struct ecoff_debug_swap * const swap = |
1486 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
252b5132 | 1487 | |
a7519a3c RH |
1488 | /* If we are called during a link, alpha_elf_final_link may have |
1489 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
1490 | if appropriate (which it normally will be). */ | |
1491 | origflags = msec->flags; | |
1492 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
1493 | msec->flags |= SEC_HAS_CONTENTS; | |
9e756d64 | 1494 | |
698600e4 | 1495 | fi = alpha_elf_tdata (abfd)->find_line_info; |
a7519a3c RH |
1496 | if (fi == NULL) |
1497 | { | |
1498 | bfd_size_type external_fdr_size; | |
1499 | char *fraw_src; | |
1500 | char *fraw_end; | |
1501 | struct fdr *fdr_ptr; | |
698600e4 | 1502 | bfd_size_type amt = sizeof (struct alpha_elf_find_line); |
9e756d64 | 1503 | |
698600e4 | 1504 | fi = (struct alpha_elf_find_line *) bfd_zalloc (abfd, amt); |
a7519a3c RH |
1505 | if (fi == NULL) |
1506 | { | |
1507 | msec->flags = origflags; | |
1508 | return FALSE; | |
1509 | } | |
9e756d64 | 1510 | |
a7519a3c RH |
1511 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) |
1512 | { | |
1513 | msec->flags = origflags; | |
1514 | return FALSE; | |
1515 | } | |
9e756d64 | 1516 | |
a7519a3c RH |
1517 | /* Swap in the FDR information. */ |
1518 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); | |
1519 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
1520 | if (fi->d.fdr == NULL) | |
1521 | { | |
1522 | msec->flags = origflags; | |
1523 | return FALSE; | |
1524 | } | |
1525 | external_fdr_size = swap->external_fdr_size; | |
1526 | fdr_ptr = fi->d.fdr; | |
1527 | fraw_src = (char *) fi->d.external_fdr; | |
1528 | fraw_end = (fraw_src | |
1529 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
1530 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
2c3fc389 | 1531 | (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); |
9e756d64 | 1532 | |
698600e4 | 1533 | alpha_elf_tdata (abfd)->find_line_info = fi; |
9e756d64 | 1534 | |
a7519a3c | 1535 | /* Note that we don't bother to ever free this information. |
07d6d2b8 AM |
1536 | find_nearest_line is either called all the time, as in |
1537 | objdump -l, so the information should be saved, or it is | |
1538 | rarely called, as in ld error messages, so the memory | |
1539 | wasted is unimportant. Still, it would probably be a | |
1540 | good idea for free_cached_info to throw it away. */ | |
a7519a3c | 1541 | } |
9e756d64 | 1542 | |
a7519a3c RH |
1543 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, |
1544 | &fi->i, filename_ptr, functionname_ptr, | |
1545 | line_ptr)) | |
1546 | { | |
1547 | msec->flags = origflags; | |
1548 | return TRUE; | |
1549 | } | |
9e756d64 | 1550 | |
a7519a3c | 1551 | msec->flags = origflags; |
9e756d64 | 1552 | } |
9e756d64 | 1553 | |
a7519a3c | 1554 | /* Fall back on the generic ELF find_nearest_line routine. */ |
9e756d64 | 1555 | |
fb167eb2 | 1556 | return _bfd_elf_find_nearest_line (abfd, symbols, section, offset, |
a7519a3c | 1557 | filename_ptr, functionname_ptr, |
fb167eb2 | 1558 | line_ptr, discriminator_ptr); |
9e756d64 | 1559 | } |
a7519a3c RH |
1560 | \f |
1561 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
9e756d64 | 1562 | |
a7519a3c | 1563 | struct extsym_info |
9e756d64 | 1564 | { |
a7519a3c RH |
1565 | bfd *abfd; |
1566 | struct bfd_link_info *info; | |
1567 | struct ecoff_debug_info *debug; | |
1568 | const struct ecoff_debug_swap *swap; | |
1569 | bfd_boolean failed; | |
1570 | }; | |
9e756d64 | 1571 | |
a7519a3c | 1572 | static bfd_boolean |
2c3fc389 | 1573 | elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, void * data) |
a7519a3c RH |
1574 | { |
1575 | struct extsym_info *einfo = (struct extsym_info *) data; | |
1576 | bfd_boolean strip; | |
1577 | asection *sec, *output_section; | |
9e756d64 | 1578 | |
a7519a3c RH |
1579 | if (h->root.indx == -2) |
1580 | strip = FALSE; | |
1581 | else if ((h->root.def_dynamic | |
1582 | || h->root.ref_dynamic | |
1583 | || h->root.root.type == bfd_link_hash_new) | |
1584 | && !h->root.def_regular | |
1585 | && !h->root.ref_regular) | |
1586 | strip = TRUE; | |
1587 | else if (einfo->info->strip == strip_all | |
1588 | || (einfo->info->strip == strip_some | |
1589 | && bfd_hash_lookup (einfo->info->keep_hash, | |
1590 | h->root.root.root.string, | |
1591 | FALSE, FALSE) == NULL)) | |
1592 | strip = TRUE; | |
1593 | else | |
1594 | strip = FALSE; | |
9e756d64 | 1595 | |
a7519a3c | 1596 | if (strip) |
b34976b6 | 1597 | return TRUE; |
9e756d64 | 1598 | |
a7519a3c | 1599 | if (h->esym.ifd == -2) |
9e756d64 | 1600 | { |
a7519a3c RH |
1601 | h->esym.jmptbl = 0; |
1602 | h->esym.cobol_main = 0; | |
1603 | h->esym.weakext = 0; | |
1604 | h->esym.reserved = 0; | |
1605 | h->esym.ifd = ifdNil; | |
1606 | h->esym.asym.value = 0; | |
1607 | h->esym.asym.st = stGlobal; | |
9e756d64 | 1608 | |
a7519a3c RH |
1609 | if (h->root.root.type != bfd_link_hash_defined |
1610 | && h->root.root.type != bfd_link_hash_defweak) | |
1611 | h->esym.asym.sc = scAbs; | |
1612 | else | |
1613 | { | |
1614 | const char *name; | |
9e756d64 | 1615 | |
a7519a3c RH |
1616 | sec = h->root.root.u.def.section; |
1617 | output_section = sec->output_section; | |
9e756d64 | 1618 | |
a7519a3c RH |
1619 | /* When making a shared library and symbol h is the one from |
1620 | the another shared library, OUTPUT_SECTION may be null. */ | |
1621 | if (output_section == NULL) | |
1622 | h->esym.asym.sc = scUndefined; | |
1623 | else | |
1624 | { | |
fd361982 | 1625 | name = bfd_section_name (output_section); |
9e756d64 | 1626 | |
a7519a3c RH |
1627 | if (strcmp (name, ".text") == 0) |
1628 | h->esym.asym.sc = scText; | |
1629 | else if (strcmp (name, ".data") == 0) | |
1630 | h->esym.asym.sc = scData; | |
1631 | else if (strcmp (name, ".sdata") == 0) | |
1632 | h->esym.asym.sc = scSData; | |
1633 | else if (strcmp (name, ".rodata") == 0 | |
1634 | || strcmp (name, ".rdata") == 0) | |
1635 | h->esym.asym.sc = scRData; | |
1636 | else if (strcmp (name, ".bss") == 0) | |
1637 | h->esym.asym.sc = scBss; | |
1638 | else if (strcmp (name, ".sbss") == 0) | |
1639 | h->esym.asym.sc = scSBss; | |
1640 | else if (strcmp (name, ".init") == 0) | |
1641 | h->esym.asym.sc = scInit; | |
1642 | else if (strcmp (name, ".fini") == 0) | |
1643 | h->esym.asym.sc = scFini; | |
1644 | else | |
1645 | h->esym.asym.sc = scAbs; | |
1646 | } | |
1647 | } | |
9e756d64 | 1648 | |
a7519a3c RH |
1649 | h->esym.asym.reserved = 0; |
1650 | h->esym.asym.index = indexNil; | |
1651 | } | |
9e756d64 | 1652 | |
a7519a3c RH |
1653 | if (h->root.root.type == bfd_link_hash_common) |
1654 | h->esym.asym.value = h->root.root.u.c.size; | |
1655 | else if (h->root.root.type == bfd_link_hash_defined | |
1656 | || h->root.root.type == bfd_link_hash_defweak) | |
1657 | { | |
1658 | if (h->esym.asym.sc == scCommon) | |
1659 | h->esym.asym.sc = scBss; | |
1660 | else if (h->esym.asym.sc == scSCommon) | |
1661 | h->esym.asym.sc = scSBss; | |
9e756d64 | 1662 | |
a7519a3c RH |
1663 | sec = h->root.root.u.def.section; |
1664 | output_section = sec->output_section; | |
1665 | if (output_section != NULL) | |
1666 | h->esym.asym.value = (h->root.root.u.def.value | |
1667 | + sec->output_offset | |
1668 | + output_section->vma); | |
1669 | else | |
1670 | h->esym.asym.value = 0; | |
1671 | } | |
9e756d64 | 1672 | |
a7519a3c RH |
1673 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
1674 | h->root.root.root.string, | |
1675 | &h->esym)) | |
1676 | { | |
1677 | einfo->failed = TRUE; | |
1678 | return FALSE; | |
9e756d64 RH |
1679 | } |
1680 | ||
a7519a3c RH |
1681 | return TRUE; |
1682 | } | |
1683 | \f | |
1684 | /* Search for and possibly create a got entry. */ | |
9e756d64 | 1685 | |
a7519a3c RH |
1686 | static struct alpha_elf_got_entry * |
1687 | get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h, | |
1688 | unsigned long r_type, unsigned long r_symndx, | |
1689 | bfd_vma r_addend) | |
1690 | { | |
1691 | struct alpha_elf_got_entry *gotent; | |
1692 | struct alpha_elf_got_entry **slot; | |
9e756d64 | 1693 | |
a7519a3c RH |
1694 | if (h) |
1695 | slot = &h->got_entries; | |
1696 | else | |
1697 | { | |
1698 | /* This is a local .got entry -- record for merge. */ | |
9e756d64 | 1699 | |
a7519a3c | 1700 | struct alpha_elf_got_entry **local_got_entries; |
9e756d64 | 1701 | |
a7519a3c RH |
1702 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
1703 | if (!local_got_entries) | |
1704 | { | |
1705 | bfd_size_type size; | |
1706 | Elf_Internal_Shdr *symtab_hdr; | |
9e756d64 | 1707 | |
a7519a3c RH |
1708 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; |
1709 | size = symtab_hdr->sh_info; | |
1710 | size *= sizeof (struct alpha_elf_got_entry *); | |
9e756d64 | 1711 | |
a7519a3c RH |
1712 | local_got_entries |
1713 | = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); | |
1714 | if (!local_got_entries) | |
1715 | return NULL; | |
1716 | ||
1717 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; | |
1718 | } | |
1719 | ||
1720 | slot = &local_got_entries[r_symndx]; | |
9e756d64 RH |
1721 | } |
1722 | ||
a7519a3c RH |
1723 | for (gotent = *slot; gotent ; gotent = gotent->next) |
1724 | if (gotent->gotobj == abfd | |
1725 | && gotent->reloc_type == r_type | |
1726 | && gotent->addend == r_addend) | |
1727 | break; | |
1728 | ||
1729 | if (!gotent) | |
9e756d64 | 1730 | { |
a7519a3c | 1731 | int entry_size; |
986f0783 | 1732 | size_t amt; |
9e756d64 | 1733 | |
a7519a3c RH |
1734 | amt = sizeof (struct alpha_elf_got_entry); |
1735 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
1736 | if (!gotent) | |
1737 | return NULL; | |
9e756d64 | 1738 | |
a7519a3c RH |
1739 | gotent->gotobj = abfd; |
1740 | gotent->addend = r_addend; | |
1741 | gotent->got_offset = -1; | |
6ec7057a | 1742 | gotent->plt_offset = -1; |
a7519a3c RH |
1743 | gotent->use_count = 1; |
1744 | gotent->reloc_type = r_type; | |
1745 | gotent->reloc_done = 0; | |
1746 | gotent->reloc_xlated = 0; | |
9e756d64 | 1747 | |
a7519a3c RH |
1748 | gotent->next = *slot; |
1749 | *slot = gotent; | |
9e756d64 | 1750 | |
a7519a3c RH |
1751 | entry_size = alpha_got_entry_size (r_type); |
1752 | alpha_elf_tdata (abfd)->total_got_size += entry_size; | |
1753 | if (!h) | |
1754 | alpha_elf_tdata(abfd)->local_got_size += entry_size; | |
9e756d64 | 1755 | } |
a7519a3c RH |
1756 | else |
1757 | gotent->use_count += 1; | |
9e756d64 | 1758 | |
a7519a3c | 1759 | return gotent; |
9e756d64 RH |
1760 | } |
1761 | ||
6ec7057a RH |
1762 | static bfd_boolean |
1763 | elf64_alpha_want_plt (struct alpha_elf_link_hash_entry *ah) | |
1764 | { | |
1765 | return ((ah->root.type == STT_FUNC | |
1766 | || ah->root.root.type == bfd_link_hash_undefweak | |
1767 | || ah->root.root.type == bfd_link_hash_undefined) | |
8288a39e RH |
1768 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_PLT) != 0 |
1769 | && (ah->flags & ~ALPHA_ELF_LINK_HASH_LU_PLT) == 0); | |
6ec7057a RH |
1770 | } |
1771 | ||
6fc5bb57 AM |
1772 | /* Whether to sort relocs output by ld -r or ld --emit-relocs, by r_offset. |
1773 | Don't do so for code sections. We want to keep ordering of LITERAL/LITUSE | |
1774 | as is. On the other hand, elf-eh-frame.c processing requires .eh_frame | |
1775 | relocs to be sorted. */ | |
1776 | ||
1777 | static bfd_boolean | |
1778 | elf64_alpha_sort_relocs_p (asection *sec) | |
1779 | { | |
1780 | return (sec->flags & SEC_CODE) == 0; | |
1781 | } | |
1782 | ||
1783 | ||
a7519a3c RH |
1784 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
1785 | ||
b34976b6 | 1786 | static bfd_boolean |
a7519a3c RH |
1787 | elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info, |
1788 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 1789 | { |
a7519a3c RH |
1790 | bfd *dynobj; |
1791 | asection *sreloc; | |
252b5132 | 1792 | Elf_Internal_Shdr *symtab_hdr; |
a7519a3c RH |
1793 | struct alpha_elf_link_hash_entry **sym_hashes; |
1794 | const Elf_Internal_Rela *rel, *relend; | |
252b5132 | 1795 | |
0e1862bb | 1796 | if (bfd_link_relocatable (info)) |
a7519a3c | 1797 | return TRUE; |
252b5132 | 1798 | |
a7519a3c RH |
1799 | /* Don't do anything special with non-loaded, non-alloced sections. |
1800 | In particular, any relocs in such sections should not affect GOT | |
1801 | and PLT reference counting (ie. we don't allow them to create GOT | |
1802 | or PLT entries), there's no possibility or desire to optimize TLS | |
1803 | relocs, and there's not much point in propagating relocs to shared | |
1804 | libs that the dynamic linker won't relocate. */ | |
1805 | if ((sec->flags & SEC_ALLOC) == 0) | |
b34976b6 | 1806 | return TRUE; |
252b5132 | 1807 | |
0ffa91dd NC |
1808 | BFD_ASSERT (is_alpha_elf (abfd)); |
1809 | ||
1810 | dynobj = elf_hash_table (info)->dynobj; | |
a7519a3c | 1811 | if (dynobj == NULL) |
0ffa91dd | 1812 | elf_hash_table (info)->dynobj = dynobj = abfd; |
252b5132 | 1813 | |
a7519a3c | 1814 | sreloc = NULL; |
0ffa91dd NC |
1815 | symtab_hdr = &elf_symtab_hdr (abfd); |
1816 | sym_hashes = alpha_elf_sym_hashes (abfd); | |
a7519a3c RH |
1817 | |
1818 | relend = relocs + sec->reloc_count; | |
1819 | for (rel = relocs; rel < relend; ++rel) | |
1820 | { | |
1821 | enum { | |
1822 | NEED_GOT = 1, | |
1823 | NEED_GOT_ENTRY = 2, | |
1824 | NEED_DYNREL = 4 | |
1825 | }; | |
1826 | ||
1827 | unsigned long r_symndx, r_type; | |
1828 | struct alpha_elf_link_hash_entry *h; | |
1829 | unsigned int gotent_flags; | |
1830 | bfd_boolean maybe_dynamic; | |
1831 | unsigned int need; | |
1832 | bfd_vma addend; | |
1833 | ||
1834 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1835 | if (r_symndx < symtab_hdr->sh_info) | |
1836 | h = NULL; | |
1837 | else | |
1838 | { | |
1839 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
252b5132 | 1840 | |
a7519a3c RH |
1841 | while (h->root.root.type == bfd_link_hash_indirect |
1842 | || h->root.root.type == bfd_link_hash_warning) | |
1843 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 1844 | |
81fbe831 AM |
1845 | /* PR15323, ref flags aren't set for references in the same |
1846 | object. */ | |
a7519a3c RH |
1847 | h->root.ref_regular = 1; |
1848 | } | |
252b5132 | 1849 | |
a7519a3c | 1850 | /* We can only get preliminary data on whether a symbol is |
07d6d2b8 AM |
1851 | locally or externally defined, as not all of the input files |
1852 | have yet been processed. Do something with what we know, as | |
1853 | this may help reduce memory usage and processing time later. */ | |
a7519a3c | 1854 | maybe_dynamic = FALSE; |
0e1862bb | 1855 | if (h && ((bfd_link_pic (info) |
a7519a3c RH |
1856 | && (!info->symbolic |
1857 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
1858 | || !h->root.def_regular | |
1859 | || h->root.root.type == bfd_link_hash_defweak)) | |
07d6d2b8 | 1860 | maybe_dynamic = TRUE; |
252b5132 | 1861 | |
a7519a3c RH |
1862 | need = 0; |
1863 | gotent_flags = 0; | |
1864 | r_type = ELF64_R_TYPE (rel->r_info); | |
1865 | addend = rel->r_addend; | |
9e756d64 | 1866 | |
9e756d64 RH |
1867 | switch (r_type) |
1868 | { | |
1869 | case R_ALPHA_LITERAL: | |
a7519a3c RH |
1870 | need = NEED_GOT | NEED_GOT_ENTRY; |
1871 | ||
1872 | /* Remember how this literal is used from its LITUSEs. | |
1873 | This will be important when it comes to decide if we can | |
1874 | create a .plt entry for a function symbol. */ | |
1875 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
8288a39e | 1876 | if (rel->r_addend >= 1 && rel->r_addend <= 6) |
a7519a3c RH |
1877 | gotent_flags |= 1 << rel->r_addend; |
1878 | --rel; | |
1879 | ||
1880 | /* No LITUSEs -- presumably the address is used somehow. */ | |
1881 | if (gotent_flags == 0) | |
1882 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
1883 | break; | |
1884 | ||
1885 | case R_ALPHA_GPDISP: | |
1886 | case R_ALPHA_GPREL16: | |
1887 | case R_ALPHA_GPREL32: | |
9e756d64 RH |
1888 | case R_ALPHA_GPRELHIGH: |
1889 | case R_ALPHA_GPRELLOW: | |
a7519a3c RH |
1890 | case R_ALPHA_BRSGP: |
1891 | need = NEED_GOT; | |
1892 | break; | |
1893 | ||
1894 | case R_ALPHA_REFLONG: | |
1895 | case R_ALPHA_REFQUAD: | |
0e1862bb | 1896 | if (bfd_link_pic (info) || maybe_dynamic) |
a7519a3c | 1897 | need = NEED_DYNREL; |
cc03ec80 RH |
1898 | break; |
1899 | ||
9e756d64 | 1900 | case R_ALPHA_TLSLDM: |
cc03ec80 | 1901 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
cf35638d TS |
1902 | reloc to the STN_UNDEF (0) symbol so that they all match. */ |
1903 | r_symndx = STN_UNDEF; | |
a7519a3c RH |
1904 | h = 0; |
1905 | maybe_dynamic = FALSE; | |
1906 | /* FALLTHRU */ | |
1907 | ||
1908 | case R_ALPHA_TLSGD: | |
1909 | case R_ALPHA_GOTDTPREL: | |
1910 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 1911 | break; |
cc03ec80 | 1912 | |
a7519a3c RH |
1913 | case R_ALPHA_GOTTPREL: |
1914 | need = NEED_GOT | NEED_GOT_ENTRY; | |
1915 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; | |
0e1862bb | 1916 | if (bfd_link_pic (info)) |
a7519a3c RH |
1917 | info->flags |= DF_STATIC_TLS; |
1918 | break; | |
1919 | ||
1920 | case R_ALPHA_TPREL64: | |
3cbc1e5e | 1921 | if (bfd_link_dll (info)) |
e366eeae RH |
1922 | { |
1923 | info->flags |= DF_STATIC_TLS; | |
1924 | need = NEED_DYNREL; | |
1925 | } | |
1926 | else if (maybe_dynamic) | |
a7519a3c | 1927 | need = NEED_DYNREL; |
a7519a3c | 1928 | break; |
252b5132 RH |
1929 | } |
1930 | ||
a7519a3c | 1931 | if (need & NEED_GOT) |
252b5132 | 1932 | { |
85d162e6 | 1933 | if (alpha_elf_tdata(abfd)->gotobj == NULL) |
6cdc0ccc | 1934 | { |
a7519a3c RH |
1935 | if (!elf64_alpha_create_got_section (abfd, info)) |
1936 | return FALSE; | |
c328dc3f | 1937 | } |
252b5132 | 1938 | } |
252b5132 | 1939 | |
a7519a3c RH |
1940 | if (need & NEED_GOT_ENTRY) |
1941 | { | |
1942 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 1943 | |
a7519a3c RH |
1944 | gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); |
1945 | if (!gotent) | |
1946 | return FALSE; | |
4a67a098 | 1947 | |
a7519a3c | 1948 | if (gotent_flags) |
cc03ec80 | 1949 | { |
a7519a3c RH |
1950 | gotent->flags |= gotent_flags; |
1951 | if (h) | |
1952 | { | |
1953 | gotent_flags |= h->flags; | |
1954 | h->flags = gotent_flags; | |
4a67a098 | 1955 | |
a7519a3c | 1956 | /* Make a guess as to whether a .plt entry is needed. */ |
6ec7057a RH |
1957 | /* ??? It appears that we won't make it into |
1958 | adjust_dynamic_symbol for symbols that remain | |
1959 | totally undefined. Copying this check here means | |
1960 | we can create a plt entry for them too. */ | |
1961 | h->root.needs_plt | |
1962 | = (maybe_dynamic && elf64_alpha_want_plt (h)); | |
1963 | } | |
a7519a3c | 1964 | } |
252b5132 RH |
1965 | } |
1966 | ||
a7519a3c | 1967 | if (need & NEED_DYNREL) |
9e756d64 | 1968 | { |
a7519a3c RH |
1969 | /* We need to create the section here now whether we eventually |
1970 | use it or not so that it gets mapped to an output section by | |
83bac4b0 | 1971 | the linker. If not used, we'll kill it in size_dynamic_sections. */ |
a7519a3c | 1972 | if (sreloc == NULL) |
9e756d64 | 1973 | { |
83bac4b0 NC |
1974 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1975 | (sec, dynobj, 3, abfd, /*rela?*/ TRUE); | |
1976 | ||
a7519a3c | 1977 | if (sreloc == NULL) |
83bac4b0 | 1978 | return FALSE; |
9e756d64 | 1979 | } |
252b5132 | 1980 | |
a7519a3c RH |
1981 | if (h) |
1982 | { | |
1983 | /* Since we havn't seen all of the input symbols yet, we | |
1984 | don't know whether we'll actually need a dynamic relocation | |
1985 | entry for this reloc. So make a record of it. Once we | |
1986 | find out if this thing needs dynamic relocation we'll | |
1987 | expand the relocation sections by the appropriate amount. */ | |
9e756d64 | 1988 | |
a7519a3c | 1989 | struct alpha_elf_reloc_entry *rent; |
9e756d64 | 1990 | |
a7519a3c RH |
1991 | for (rent = h->reloc_entries; rent; rent = rent->next) |
1992 | if (rent->rtype == r_type && rent->srel == sreloc) | |
1993 | break; | |
252b5132 | 1994 | |
a7519a3c RH |
1995 | if (!rent) |
1996 | { | |
986f0783 | 1997 | size_t amt = sizeof (struct alpha_elf_reloc_entry); |
a7519a3c RH |
1998 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); |
1999 | if (!rent) | |
2000 | return FALSE; | |
252b5132 | 2001 | |
a7519a3c RH |
2002 | rent->srel = sreloc; |
2003 | rent->rtype = r_type; | |
2004 | rent->count = 1; | |
2005 | rent->reltext = (sec->flags & SEC_READONLY) != 0; | |
252b5132 | 2006 | |
a7519a3c RH |
2007 | rent->next = h->reloc_entries; |
2008 | h->reloc_entries = rent; | |
2009 | } | |
2010 | else | |
2011 | rent->count++; | |
2012 | } | |
0e1862bb | 2013 | else if (bfd_link_pic (info)) |
a7519a3c RH |
2014 | { |
2015 | /* If this is a shared library, and the section is to be | |
2016 | loaded into memory, we need a RELATIVE reloc. */ | |
2017 | sreloc->size += sizeof (Elf64_External_Rela); | |
2018 | if (sec->flags & SEC_READONLY) | |
2019 | info->flags |= DF_TEXTREL; | |
2020 | } | |
252b5132 RH |
2021 | } |
2022 | } | |
2023 | ||
b34976b6 | 2024 | return TRUE; |
252b5132 | 2025 | } |
252b5132 | 2026 | |
e117360e RH |
2027 | /* Return the section that should be marked against GC for a given |
2028 | relocation. */ | |
2029 | ||
2030 | static asection * | |
2031 | elf64_alpha_gc_mark_hook (asection *sec, struct bfd_link_info *info, | |
2032 | Elf_Internal_Rela *rel, | |
2033 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym) | |
2034 | { | |
2035 | /* These relocations don't really reference a symbol. Instead we store | |
2036 | extra data in their addend slot. Ignore the symbol. */ | |
2037 | switch (ELF64_R_TYPE (rel->r_info)) | |
2038 | { | |
2039 | case R_ALPHA_LITUSE: | |
2040 | case R_ALPHA_GPDISP: | |
2041 | case R_ALPHA_HINT: | |
2042 | return NULL; | |
2043 | } | |
2044 | ||
2045 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
2046 | } | |
2047 | ||
a7519a3c RH |
2048 | /* Adjust a symbol defined by a dynamic object and referenced by a |
2049 | regular object. The current definition is in some section of the | |
2050 | dynamic object, but we're not including those sections. We have to | |
2051 | change the definition to something the rest of the link can | |
2052 | understand. */ | |
252b5132 | 2053 | |
b34976b6 | 2054 | static bfd_boolean |
a7519a3c RH |
2055 | elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info, |
2056 | struct elf_link_hash_entry *h) | |
252b5132 | 2057 | { |
a7519a3c RH |
2058 | bfd *dynobj; |
2059 | asection *s; | |
2060 | struct alpha_elf_link_hash_entry *ah; | |
252b5132 | 2061 | |
a7519a3c RH |
2062 | dynobj = elf_hash_table(info)->dynobj; |
2063 | ah = (struct alpha_elf_link_hash_entry *)h; | |
252b5132 | 2064 | |
a7519a3c | 2065 | /* Now that we've seen all of the input symbols, finalize our decision |
6ec7057a RH |
2066 | about whether this symbol should get a .plt entry. Irritatingly, it |
2067 | is common for folk to leave undefined symbols in shared libraries, | |
2068 | and they still expect lazy binding; accept undefined symbols in lieu | |
2069 | of STT_FUNC. */ | |
2070 | if (alpha_elf_dynamic_symbol_p (h, info) && elf64_alpha_want_plt (ah)) | |
252b5132 | 2071 | { |
6ec7057a | 2072 | h->needs_plt = TRUE; |
252b5132 | 2073 | |
ce558b89 | 2074 | s = elf_hash_table(info)->splt; |
a7519a3c RH |
2075 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) |
2076 | return FALSE; | |
204692d7 | 2077 | |
6ec7057a RH |
2078 | /* We need one plt entry per got subsection. Delay allocation of |
2079 | the actual plt entries until size_plt_section, called from | |
2080 | size_dynamic_sections or during relaxation. */ | |
252b5132 | 2081 | |
a7519a3c RH |
2082 | return TRUE; |
2083 | } | |
2084 | else | |
6ec7057a | 2085 | h->needs_plt = FALSE; |
252b5132 | 2086 | |
a7519a3c RH |
2087 | /* If this is a weak symbol, and there is a real definition, the |
2088 | processor independent code will have arranged for us to see the | |
2089 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 2090 | if (h->is_weakalias) |
252b5132 | 2091 | { |
60d67dc8 AM |
2092 | struct elf_link_hash_entry *def = weakdef (h); |
2093 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
2094 | h->root.u.def.section = def->root.u.def.section; | |
2095 | h->root.u.def.value = def->root.u.def.value; | |
a7519a3c | 2096 | return TRUE; |
252b5132 | 2097 | } |
a7519a3c RH |
2098 | |
2099 | /* This is a reference to a symbol defined by a dynamic object which | |
2100 | is not a function. The Alpha, since it uses .got entries for all | |
2101 | symbols even in regular objects, does not need the hackery of a | |
2102 | .dynbss section and COPY dynamic relocations. */ | |
252b5132 | 2103 | |
b34976b6 | 2104 | return TRUE; |
252b5132 RH |
2105 | } |
2106 | ||
747ffa7b AM |
2107 | /* Record STO_ALPHA_NOPV and STO_ALPHA_STD_GPLOAD. */ |
2108 | ||
2109 | static void | |
2110 | elf64_alpha_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
2111 | const Elf_Internal_Sym *isym, | |
2112 | bfd_boolean definition, | |
2113 | bfd_boolean dynamic) | |
2114 | { | |
2115 | if (!dynamic && definition) | |
2116 | h->other = ((h->other & ELF_ST_VISIBILITY (-1)) | |
2117 | | (isym->st_other & ~ELF_ST_VISIBILITY (-1))); | |
2118 | } | |
2119 | ||
a7519a3c RH |
2120 | /* Symbol versioning can create new symbols, and make our old symbols |
2121 | indirect to the new ones. Consolidate the got and reloc information | |
2122 | in these situations. */ | |
252b5132 | 2123 | |
48f4b4f5 RH |
2124 | static void |
2125 | elf64_alpha_copy_indirect_symbol (struct bfd_link_info *info, | |
2126 | struct elf_link_hash_entry *dir, | |
2127 | struct elf_link_hash_entry *ind) | |
252b5132 | 2128 | { |
48f4b4f5 RH |
2129 | struct alpha_elf_link_hash_entry *hi |
2130 | = (struct alpha_elf_link_hash_entry *) ind; | |
2131 | struct alpha_elf_link_hash_entry *hs | |
2132 | = (struct alpha_elf_link_hash_entry *) dir; | |
252b5132 | 2133 | |
48f4b4f5 RH |
2134 | /* Do the merging in the superclass. */ |
2135 | _bfd_elf_link_hash_copy_indirect(info, dir, ind); | |
252b5132 | 2136 | |
a7519a3c | 2137 | /* Merge the flags. Whee. */ |
a7519a3c RH |
2138 | hs->flags |= hi->flags; |
2139 | ||
48f4b4f5 RH |
2140 | /* ??? It's unclear to me what's really supposed to happen when |
2141 | "merging" defweak and defined symbols, given that we don't | |
2142 | actually throw away the defweak. This more-or-less copies | |
2143 | the logic related to got and plt entries in the superclass. */ | |
2144 | if (ind->root.type != bfd_link_hash_indirect) | |
2145 | return; | |
2146 | ||
a7519a3c RH |
2147 | /* Merge the .got entries. Cannibalize the old symbol's list in |
2148 | doing so, since we don't need it anymore. */ | |
2149 | ||
2150 | if (hs->got_entries == NULL) | |
2151 | hs->got_entries = hi->got_entries; | |
2152 | else | |
2153 | { | |
2154 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
2155 | ||
2156 | gsh = hs->got_entries; | |
2157 | for (gi = hi->got_entries; gi ; gi = gin) | |
252b5132 | 2158 | { |
a7519a3c RH |
2159 | gin = gi->next; |
2160 | for (gs = gsh; gs ; gs = gs->next) | |
2161 | if (gi->gotobj == gs->gotobj | |
2162 | && gi->reloc_type == gs->reloc_type | |
2163 | && gi->addend == gs->addend) | |
2164 | { | |
68994ca2 | 2165 | gs->use_count += gi->use_count; |
07d6d2b8 | 2166 | goto got_found; |
a7519a3c RH |
2167 | } |
2168 | gi->next = hs->got_entries; | |
2169 | hs->got_entries = gi; | |
2170 | got_found:; | |
252b5132 | 2171 | } |
a7519a3c RH |
2172 | } |
2173 | hi->got_entries = NULL; | |
252b5132 | 2174 | |
a7519a3c RH |
2175 | /* And similar for the reloc entries. */ |
2176 | ||
2177 | if (hs->reloc_entries == NULL) | |
2178 | hs->reloc_entries = hi->reloc_entries; | |
2179 | else | |
2180 | { | |
2181 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
2182 | ||
2183 | rsh = hs->reloc_entries; | |
2184 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
2185 | { | |
2186 | rin = ri->next; | |
2187 | for (rs = rsh; rs ; rs = rs->next) | |
2188 | if (ri->rtype == rs->rtype && ri->srel == rs->srel) | |
2189 | { | |
2190 | rs->count += ri->count; | |
2191 | goto found_reloc; | |
2192 | } | |
2193 | ri->next = hs->reloc_entries; | |
2194 | hs->reloc_entries = ri; | |
2195 | found_reloc:; | |
2196 | } | |
252b5132 | 2197 | } |
a7519a3c | 2198 | hi->reloc_entries = NULL; |
252b5132 RH |
2199 | } |
2200 | ||
a7519a3c | 2201 | /* Is it possible to merge two object file's .got tables? */ |
252b5132 | 2202 | |
b34976b6 | 2203 | static bfd_boolean |
a7519a3c | 2204 | elf64_alpha_can_merge_gots (bfd *a, bfd *b) |
252b5132 | 2205 | { |
a7519a3c RH |
2206 | int total = alpha_elf_tdata (a)->total_got_size; |
2207 | bfd *bsub; | |
252b5132 | 2208 | |
a7519a3c RH |
2209 | /* Trivial quick fallout test. */ |
2210 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) | |
2211 | return TRUE; | |
252b5132 | 2212 | |
a7519a3c RH |
2213 | /* By their nature, local .got entries cannot be merged. */ |
2214 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) | |
b34976b6 | 2215 | return FALSE; |
252b5132 | 2216 | |
a7519a3c RH |
2217 | /* Failing the common trivial comparison, we must effectively |
2218 | perform the merge. Not actually performing the merge means that | |
2219 | we don't have to store undo information in case we fail. */ | |
2220 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
2221 | { | |
2222 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
2223 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
2224 | int i, n; | |
2225 | ||
2226 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; | |
2227 | for (i = 0; i < n; ++i) | |
2228 | { | |
2229 | struct alpha_elf_got_entry *ae, *be; | |
2230 | struct alpha_elf_link_hash_entry *h; | |
2231 | ||
2232 | h = hashes[i]; | |
2233 | while (h->root.root.type == bfd_link_hash_indirect | |
07d6d2b8 | 2234 | || h->root.root.type == bfd_link_hash_warning) |
a7519a3c RH |
2235 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; |
2236 | ||
2237 | for (be = h->got_entries; be ; be = be->next) | |
2238 | { | |
2239 | if (be->use_count == 0) | |
07d6d2b8 | 2240 | continue; |
a7519a3c | 2241 | if (be->gotobj != b) |
07d6d2b8 | 2242 | continue; |
a7519a3c RH |
2243 | |
2244 | for (ae = h->got_entries; ae ; ae = ae->next) | |
07d6d2b8 | 2245 | if (ae->gotobj == a |
a7519a3c RH |
2246 | && ae->reloc_type == be->reloc_type |
2247 | && ae->addend == be->addend) | |
2248 | goto global_found; | |
2249 | ||
2250 | total += alpha_got_entry_size (be->reloc_type); | |
2251 | if (total > MAX_GOT_SIZE) | |
07d6d2b8 | 2252 | return FALSE; |
a7519a3c RH |
2253 | global_found:; |
2254 | } | |
2255 | } | |
2256 | } | |
252b5132 | 2257 | |
b34976b6 | 2258 | return TRUE; |
252b5132 RH |
2259 | } |
2260 | ||
a7519a3c | 2261 | /* Actually merge two .got tables. */ |
252b5132 | 2262 | |
a7519a3c RH |
2263 | static void |
2264 | elf64_alpha_merge_gots (bfd *a, bfd *b) | |
252b5132 | 2265 | { |
a7519a3c RH |
2266 | int total = alpha_elf_tdata (a)->total_got_size; |
2267 | bfd *bsub; | |
252b5132 | 2268 | |
a7519a3c RH |
2269 | /* Remember local expansion. */ |
2270 | { | |
2271 | int e = alpha_elf_tdata (b)->local_got_size; | |
2272 | total += e; | |
2273 | alpha_elf_tdata (a)->local_got_size += e; | |
2274 | } | |
252b5132 | 2275 | |
a7519a3c RH |
2276 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) |
2277 | { | |
2278 | struct alpha_elf_got_entry **local_got_entries; | |
2279 | struct alpha_elf_link_hash_entry **hashes; | |
2280 | Elf_Internal_Shdr *symtab_hdr; | |
2281 | int i, n; | |
252b5132 | 2282 | |
a7519a3c RH |
2283 | /* Let the local .got entries know they are part of a new subsegment. */ |
2284 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
2285 | if (local_got_entries) | |
07d6d2b8 | 2286 | { |
a7519a3c RH |
2287 | n = elf_tdata (bsub)->symtab_hdr.sh_info; |
2288 | for (i = 0; i < n; ++i) | |
2289 | { | |
2290 | struct alpha_elf_got_entry *ent; | |
2291 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
07d6d2b8 | 2292 | ent->gotobj = a; |
a7519a3c | 2293 | } |
07d6d2b8 | 2294 | } |
252b5132 | 2295 | |
a7519a3c RH |
2296 | /* Merge the global .got entries. */ |
2297 | hashes = alpha_elf_sym_hashes (bsub); | |
2298 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
252b5132 | 2299 | |
a7519a3c RH |
2300 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
2301 | for (i = 0; i < n; ++i) | |
07d6d2b8 | 2302 | { |
a7519a3c RH |
2303 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; |
2304 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 2305 | |
a7519a3c RH |
2306 | h = hashes[i]; |
2307 | while (h->root.root.type == bfd_link_hash_indirect | |
07d6d2b8 | 2308 | || h->root.root.type == bfd_link_hash_warning) |
a7519a3c | 2309 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; |
252b5132 | 2310 | |
a7519a3c RH |
2311 | pbe = start = &h->got_entries; |
2312 | while ((be = *pbe) != NULL) | |
2313 | { | |
2314 | if (be->use_count == 0) | |
07d6d2b8 | 2315 | { |
a7519a3c RH |
2316 | *pbe = be->next; |
2317 | memset (be, 0xa5, sizeof (*be)); | |
2318 | goto kill; | |
07d6d2b8 | 2319 | } |
a7519a3c | 2320 | if (be->gotobj != b) |
07d6d2b8 | 2321 | goto next; |
a7519a3c RH |
2322 | |
2323 | for (ae = *start; ae ; ae = ae->next) | |
07d6d2b8 | 2324 | if (ae->gotobj == a |
a7519a3c RH |
2325 | && ae->reloc_type == be->reloc_type |
2326 | && ae->addend == be->addend) | |
2327 | { | |
2328 | ae->flags |= be->flags; | |
2329 | ae->use_count += be->use_count; | |
2330 | *pbe = be->next; | |
2331 | memset (be, 0xa5, sizeof (*be)); | |
2332 | goto kill; | |
2333 | } | |
2334 | be->gotobj = a; | |
2335 | total += alpha_got_entry_size (be->reloc_type); | |
252b5132 | 2336 | |
a7519a3c RH |
2337 | next:; |
2338 | pbe = &be->next; | |
2339 | kill:; | |
2340 | } | |
07d6d2b8 | 2341 | } |
252b5132 | 2342 | |
a7519a3c RH |
2343 | alpha_elf_tdata (bsub)->gotobj = a; |
2344 | } | |
2345 | alpha_elf_tdata (a)->total_got_size = total; | |
252b5132 | 2346 | |
a7519a3c RH |
2347 | /* Merge the two in_got chains. */ |
2348 | { | |
2349 | bfd *next; | |
252b5132 | 2350 | |
a7519a3c RH |
2351 | bsub = a; |
2352 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
2353 | bsub = next; | |
252b5132 | 2354 | |
a7519a3c RH |
2355 | alpha_elf_tdata (bsub)->in_got_link_next = b; |
2356 | } | |
252b5132 | 2357 | } |
a7519a3c RH |
2358 | |
2359 | /* Calculate the offsets for the got entries. */ | |
252b5132 | 2360 | |
b34976b6 | 2361 | static bfd_boolean |
a7519a3c | 2362 | elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h, |
2c3fc389 | 2363 | void * arg ATTRIBUTE_UNUSED) |
252b5132 | 2364 | { |
a7519a3c | 2365 | struct alpha_elf_got_entry *gotent; |
252b5132 | 2366 | |
a7519a3c RH |
2367 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
2368 | if (gotent->use_count > 0) | |
2369 | { | |
2370 | struct alpha_elf_obj_tdata *td; | |
2371 | bfd_size_type *plge; | |
252b5132 | 2372 | |
a7519a3c | 2373 | td = alpha_elf_tdata (gotent->gotobj); |
a7519a3c RH |
2374 | plge = &td->got->size; |
2375 | gotent->got_offset = *plge; | |
2376 | *plge += alpha_got_entry_size (gotent->reloc_type); | |
2377 | } | |
252b5132 | 2378 | |
6ec7057a | 2379 | return TRUE; |
a7519a3c | 2380 | } |
252b5132 | 2381 | |
a7519a3c RH |
2382 | static void |
2383 | elf64_alpha_calc_got_offsets (struct bfd_link_info *info) | |
2384 | { | |
4dfe6ac6 NC |
2385 | bfd *i, *got_list; |
2386 | struct alpha_elf_link_hash_table * htab; | |
2387 | ||
2388 | htab = alpha_elf_hash_table (info); | |
2389 | if (htab == NULL) | |
2390 | return; | |
2391 | got_list = htab->got_list; | |
252b5132 | 2392 | |
a7519a3c RH |
2393 | /* First, zero out the .got sizes, as we may be recalculating the |
2394 | .got after optimizing it. */ | |
2395 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2396 | alpha_elf_tdata(i)->got->size = 0; | |
252b5132 | 2397 | |
a7519a3c | 2398 | /* Next, fill in the offsets for all the global entries. */ |
4dfe6ac6 | 2399 | alpha_elf_link_hash_traverse (htab, |
a7519a3c RH |
2400 | elf64_alpha_calc_got_offsets_for_symbol, |
2401 | NULL); | |
252b5132 | 2402 | |
a7519a3c RH |
2403 | /* Finally, fill in the offsets for the local entries. */ |
2404 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2405 | { | |
2406 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->size; | |
2407 | bfd *j; | |
252b5132 | 2408 | |
a7519a3c RH |
2409 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2410 | { | |
2411 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2412 | int k, n; | |
252b5132 | 2413 | |
a7519a3c RH |
2414 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2415 | if (!local_got_entries) | |
2416 | continue; | |
252b5132 | 2417 | |
a7519a3c RH |
2418 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2419 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
2420 | if (gotent->use_count > 0) | |
07d6d2b8 | 2421 | { |
a7519a3c RH |
2422 | gotent->got_offset = got_offset; |
2423 | got_offset += alpha_got_entry_size (gotent->reloc_type); | |
07d6d2b8 | 2424 | } |
a7519a3c | 2425 | } |
252b5132 | 2426 | |
a7519a3c RH |
2427 | alpha_elf_tdata(i)->got->size = got_offset; |
2428 | } | |
2429 | } | |
252b5132 | 2430 | |
a7519a3c | 2431 | /* Constructs the gots. */ |
252b5132 | 2432 | |
b34976b6 | 2433 | static bfd_boolean |
d1c109de | 2434 | elf64_alpha_size_got_sections (struct bfd_link_info *info, |
07d6d2b8 | 2435 | bfd_boolean may_merge) |
252b5132 | 2436 | { |
a7519a3c | 2437 | bfd *i, *got_list, *cur_got_obj = NULL; |
4dfe6ac6 | 2438 | struct alpha_elf_link_hash_table * htab; |
252b5132 | 2439 | |
4dfe6ac6 NC |
2440 | htab = alpha_elf_hash_table (info); |
2441 | if (htab == NULL) | |
2442 | return FALSE; | |
2443 | got_list = htab->got_list; | |
95404643 | 2444 | |
a7519a3c RH |
2445 | /* On the first time through, pretend we have an existing got list |
2446 | consisting of all of the input files. */ | |
2447 | if (got_list == NULL) | |
252b5132 | 2448 | { |
c72f2fb2 | 2449 | for (i = info->input_bfds; i ; i = i->link.next) |
252b5132 | 2450 | { |
0ffa91dd NC |
2451 | bfd *this_got; |
2452 | ||
2453 | if (! is_alpha_elf (i)) | |
2454 | continue; | |
2455 | ||
2456 | this_got = alpha_elf_tdata (i)->gotobj; | |
a7519a3c RH |
2457 | if (this_got == NULL) |
2458 | continue; | |
252b5132 | 2459 | |
a7519a3c RH |
2460 | /* We are assuming no merging has yet occurred. */ |
2461 | BFD_ASSERT (this_got == i); | |
252b5132 | 2462 | |
07d6d2b8 | 2463 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 | 2464 | { |
a7519a3c | 2465 | /* Yikes! A single object file has too many entries. */ |
4eca0228 | 2466 | _bfd_error_handler |
695344c0 | 2467 | /* xgettext:c-format */ |
871b3ab2 | 2468 | (_("%pB: .got subsegment exceeds 64K (size %d)"), |
07d6d2b8 | 2469 | i, alpha_elf_tdata (this_got)->total_got_size); |
b34976b6 | 2470 | return FALSE; |
252b5132 | 2471 | } |
252b5132 | 2472 | |
a7519a3c RH |
2473 | if (got_list == NULL) |
2474 | got_list = this_got; | |
2475 | else | |
2476 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
2477 | cur_got_obj = this_got; | |
252b5132 RH |
2478 | } |
2479 | ||
a7519a3c RH |
2480 | /* Strange degenerate case of no got references. */ |
2481 | if (got_list == NULL) | |
2482 | return TRUE; | |
2483 | ||
4dfe6ac6 | 2484 | htab->got_list = got_list; |
a7519a3c RH |
2485 | } |
2486 | ||
2487 | cur_got_obj = got_list; | |
0ffa91dd NC |
2488 | if (cur_got_obj == NULL) |
2489 | return FALSE; | |
2490 | ||
d1c109de | 2491 | if (may_merge) |
a7519a3c | 2492 | { |
d1c109de RH |
2493 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; |
2494 | while (i != NULL) | |
252b5132 | 2495 | { |
d1c109de RH |
2496 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) |
2497 | { | |
2498 | elf64_alpha_merge_gots (cur_got_obj, i); | |
252b5132 | 2499 | |
d1c109de RH |
2500 | alpha_elf_tdata(i)->got->size = 0; |
2501 | i = alpha_elf_tdata(i)->got_link_next; | |
2502 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
2503 | } | |
2504 | else | |
2505 | { | |
2506 | cur_got_obj = i; | |
2507 | i = alpha_elf_tdata(i)->got_link_next; | |
2508 | } | |
a7519a3c | 2509 | } |
252b5132 RH |
2510 | } |
2511 | ||
a7519a3c RH |
2512 | /* Once the gots have been merged, fill in the got offsets for |
2513 | everything therein. */ | |
4a828aab | 2514 | elf64_alpha_calc_got_offsets (info); |
252b5132 | 2515 | |
a7519a3c | 2516 | return TRUE; |
252b5132 | 2517 | } |
252b5132 | 2518 | |
b34976b6 | 2519 | static bfd_boolean |
2c3fc389 NC |
2520 | elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, |
2521 | void * data) | |
252b5132 | 2522 | { |
a7519a3c RH |
2523 | asection *splt = (asection *) data; |
2524 | struct alpha_elf_got_entry *gotent; | |
6ec7057a | 2525 | bfd_boolean saw_one = FALSE; |
252b5132 | 2526 | |
a7519a3c RH |
2527 | /* If we didn't need an entry before, we still don't. */ |
2528 | if (!h->root.needs_plt) | |
2529 | return TRUE; | |
e92d460e | 2530 | |
6ec7057a | 2531 | /* For each LITERAL got entry still in use, allocate a plt entry. */ |
a7519a3c RH |
2532 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) |
2533 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
2534 | && gotent->use_count > 0) | |
6ec7057a RH |
2535 | { |
2536 | if (splt->size == 0) | |
2537 | splt->size = PLT_HEADER_SIZE; | |
2538 | gotent->plt_offset = splt->size; | |
2539 | splt->size += PLT_ENTRY_SIZE; | |
2540 | saw_one = TRUE; | |
2541 | } | |
a7519a3c | 2542 | |
6ec7057a RH |
2543 | /* If there weren't any, there's no longer a need for the PLT entry. */ |
2544 | if (!saw_one) | |
2545 | h->root.needs_plt = FALSE; | |
a7519a3c RH |
2546 | |
2547 | return TRUE; | |
2548 | } | |
2549 | ||
4a828aab RH |
2550 | /* Called from relax_section to rebuild the PLT in light of potential changes |
2551 | in the function's status. */ | |
a7519a3c | 2552 | |
4a828aab | 2553 | static void |
a7519a3c RH |
2554 | elf64_alpha_size_plt_section (struct bfd_link_info *info) |
2555 | { | |
6ec7057a | 2556 | asection *splt, *spltrel, *sgotplt; |
a7519a3c | 2557 | unsigned long entries; |
4dfe6ac6 NC |
2558 | struct alpha_elf_link_hash_table * htab; |
2559 | ||
2560 | htab = alpha_elf_hash_table (info); | |
2561 | if (htab == NULL) | |
2562 | return; | |
a7519a3c | 2563 | |
ce558b89 | 2564 | splt = elf_hash_table(info)->splt; |
a7519a3c | 2565 | if (splt == NULL) |
4a828aab | 2566 | return; |
252b5132 | 2567 | |
a7519a3c | 2568 | splt->size = 0; |
252b5132 | 2569 | |
4dfe6ac6 | 2570 | alpha_elf_link_hash_traverse (htab, |
a7519a3c | 2571 | elf64_alpha_size_plt_section_1, splt); |
e92d460e | 2572 | |
a7519a3c | 2573 | /* Every plt entry requires a JMP_SLOT relocation. */ |
ce558b89 | 2574 | spltrel = elf_hash_table(info)->srelplt; |
4a828aab | 2575 | entries = 0; |
a7519a3c | 2576 | if (splt->size) |
6ec7057a RH |
2577 | { |
2578 | if (elf64_alpha_use_secureplt) | |
2579 | entries = (splt->size - NEW_PLT_HEADER_SIZE) / NEW_PLT_ENTRY_SIZE; | |
2580 | else | |
2581 | entries = (splt->size - OLD_PLT_HEADER_SIZE) / OLD_PLT_ENTRY_SIZE; | |
2582 | } | |
a7519a3c | 2583 | spltrel->size = entries * sizeof (Elf64_External_Rela); |
e92d460e | 2584 | |
6ec7057a RH |
2585 | /* When using the secureplt, we need two words somewhere in the data |
2586 | segment for the dynamic linker to tell us where to go. This is the | |
2587 | entire contents of the .got.plt section. */ | |
2588 | if (elf64_alpha_use_secureplt) | |
2589 | { | |
ce558b89 | 2590 | sgotplt = elf_hash_table(info)->sgotplt; |
6ec7057a RH |
2591 | sgotplt->size = entries ? 16 : 0; |
2592 | } | |
a7519a3c | 2593 | } |
e92d460e | 2594 | |
a7519a3c RH |
2595 | static bfd_boolean |
2596 | elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2597 | struct bfd_link_info *info) | |
2598 | { | |
2599 | bfd *i; | |
4dfe6ac6 | 2600 | struct alpha_elf_link_hash_table * htab; |
252b5132 | 2601 | |
0e1862bb | 2602 | if (bfd_link_relocatable (info)) |
a7519a3c | 2603 | return TRUE; |
252b5132 | 2604 | |
4dfe6ac6 NC |
2605 | htab = alpha_elf_hash_table (info); |
2606 | if (htab == NULL) | |
2607 | return FALSE; | |
2608 | ||
d1c109de | 2609 | if (!elf64_alpha_size_got_sections (info, TRUE)) |
a7519a3c | 2610 | return FALSE; |
252b5132 | 2611 | |
a7519a3c | 2612 | /* Allocate space for all of the .got subsections. */ |
4dfe6ac6 | 2613 | i = htab->got_list; |
a7519a3c | 2614 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) |
252b5132 | 2615 | { |
a7519a3c RH |
2616 | asection *s = alpha_elf_tdata(i)->got; |
2617 | if (s->size > 0) | |
2618 | { | |
2619 | s->contents = (bfd_byte *) bfd_zalloc (i, s->size); | |
2620 | if (s->contents == NULL) | |
2621 | return FALSE; | |
2622 | } | |
252b5132 RH |
2623 | } |
2624 | ||
b34976b6 | 2625 | return TRUE; |
252b5132 | 2626 | } |
3765b1be | 2627 | |
a7519a3c | 2628 | /* The number of dynamic relocations required by a static relocation. */ |
3765b1be | 2629 | |
a7519a3c | 2630 | static int |
e366eeae | 2631 | alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared, int pie) |
a7519a3c RH |
2632 | { |
2633 | switch (r_type) | |
3765b1be | 2634 | { |
a7519a3c RH |
2635 | /* May appear in GOT entries. */ |
2636 | case R_ALPHA_TLSGD: | |
2637 | return (dynamic ? 2 : shared ? 1 : 0); | |
2638 | case R_ALPHA_TLSLDM: | |
2639 | return shared; | |
2640 | case R_ALPHA_LITERAL: | |
a7519a3c | 2641 | return dynamic || shared; |
e366eeae RH |
2642 | case R_ALPHA_GOTTPREL: |
2643 | return dynamic || (shared && !pie); | |
a7519a3c RH |
2644 | case R_ALPHA_GOTDTPREL: |
2645 | return dynamic; | |
3765b1be | 2646 | |
a7519a3c RH |
2647 | /* May appear in data sections. */ |
2648 | case R_ALPHA_REFLONG: | |
2649 | case R_ALPHA_REFQUAD: | |
a7519a3c | 2650 | return dynamic || shared; |
e366eeae RH |
2651 | case R_ALPHA_TPREL64: |
2652 | return dynamic || (shared && !pie); | |
3765b1be | 2653 | |
a7519a3c RH |
2654 | /* Everything else is illegal. We'll issue an error during |
2655 | relocate_section. */ | |
2656 | default: | |
2657 | return 0; | |
2658 | } | |
2659 | } | |
3765b1be | 2660 | |
a7519a3c | 2661 | /* Work out the sizes of the dynamic relocation entries. */ |
3765b1be | 2662 | |
a7519a3c RH |
2663 | static bfd_boolean |
2664 | elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h, | |
2665 | struct bfd_link_info *info) | |
2666 | { | |
2667 | bfd_boolean dynamic; | |
2668 | struct alpha_elf_reloc_entry *relent; | |
2669 | unsigned long entries; | |
3765b1be | 2670 | |
a7519a3c RH |
2671 | /* If the symbol was defined as a common symbol in a regular object |
2672 | file, and there was no definition in any dynamic object, then the | |
2673 | linker will have allocated space for the symbol in a common | |
2674 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
2675 | set. This is done for dynamic symbols in | |
2676 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
2677 | symbols, somehow. */ | |
2678 | if (!h->root.def_regular | |
2679 | && h->root.ref_regular | |
2680 | && !h->root.def_dynamic | |
2681 | && (h->root.root.type == bfd_link_hash_defined | |
2682 | || h->root.root.type == bfd_link_hash_defweak) | |
2683 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
2684 | h->root.def_regular = 1; | |
3765b1be | 2685 | |
a7519a3c RH |
2686 | /* If the symbol is dynamic, we'll need all the relocations in their |
2687 | natural form. If this is a shared object, and it has been forced | |
2688 | local, we'll need the same number of RELATIVE relocations. */ | |
2689 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
3765b1be | 2690 | |
a7519a3c RH |
2691 | /* If the symbol is a hidden undefined weak, then we never have any |
2692 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
0e1862bb | 2693 | based on bfd_link_pic (info). */ |
a7519a3c RH |
2694 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) |
2695 | return TRUE; | |
2696 | ||
2697 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
3765b1be | 2698 | { |
a7519a3c | 2699 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, |
3cbc1e5e AM |
2700 | bfd_link_pic (info), |
2701 | bfd_link_pie (info)); | |
a7519a3c RH |
2702 | if (entries) |
2703 | { | |
2704 | relent->srel->size += | |
2705 | entries * sizeof (Elf64_External_Rela) * relent->count; | |
2706 | if (relent->reltext) | |
2707 | info->flags |= DT_TEXTREL; | |
2708 | } | |
2709 | } | |
3765b1be | 2710 | |
a7519a3c RH |
2711 | return TRUE; |
2712 | } | |
3765b1be | 2713 | |
a7519a3c RH |
2714 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the |
2715 | global symbols. */ | |
3765b1be | 2716 | |
a7519a3c RH |
2717 | static bfd_boolean |
2718 | elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h, | |
2719 | struct bfd_link_info *info) | |
2720 | { | |
2721 | bfd_boolean dynamic; | |
2722 | struct alpha_elf_got_entry *gotent; | |
2723 | unsigned long entries; | |
3765b1be | 2724 | |
6ec7057a RH |
2725 | /* If we're using a plt for this symbol, then all of its relocations |
2726 | for its got entries go into .rela.plt. */ | |
2727 | if (h->root.needs_plt) | |
2728 | return TRUE; | |
2729 | ||
a7519a3c RH |
2730 | /* If the symbol is dynamic, we'll need all the relocations in their |
2731 | natural form. If this is a shared object, and it has been forced | |
2732 | local, we'll need the same number of RELATIVE relocations. */ | |
2733 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
2734 | ||
2735 | /* If the symbol is a hidden undefined weak, then we never have any | |
2736 | relocations. Avoid the loop which may want to add RELATIVE relocs | |
0e1862bb | 2737 | based on bfd_link_pic (info). */ |
a7519a3c RH |
2738 | if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) |
2739 | return TRUE; | |
2740 | ||
2741 | entries = 0; | |
2742 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2743 | if (gotent->use_count > 0) | |
e366eeae | 2744 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, dynamic, |
0e1862bb L |
2745 | bfd_link_pic (info), |
2746 | bfd_link_pie (info)); | |
a7519a3c | 2747 | |
a7519a3c RH |
2748 | if (entries > 0) |
2749 | { | |
ce558b89 | 2750 | asection *srel = elf_hash_table(info)->srelgot; |
a7519a3c RH |
2751 | BFD_ASSERT (srel != NULL); |
2752 | srel->size += sizeof (Elf64_External_Rela) * entries; | |
3765b1be | 2753 | } |
3765b1be | 2754 | |
a7519a3c | 2755 | return TRUE; |
3765b1be RH |
2756 | } |
2757 | ||
a7519a3c | 2758 | /* Set the sizes of the dynamic relocation sections. */ |
252b5132 | 2759 | |
4a828aab | 2760 | static void |
a7519a3c | 2761 | elf64_alpha_size_rela_got_section (struct bfd_link_info *info) |
252b5132 | 2762 | { |
a7519a3c | 2763 | unsigned long entries; |
ce558b89 | 2764 | bfd *i; |
a7519a3c | 2765 | asection *srel; |
4dfe6ac6 NC |
2766 | struct alpha_elf_link_hash_table * htab; |
2767 | ||
2768 | htab = alpha_elf_hash_table (info); | |
2769 | if (htab == NULL) | |
2770 | return; | |
252b5132 | 2771 | |
a7519a3c RH |
2772 | /* Shared libraries often require RELATIVE relocs, and some relocs |
2773 | require attention for the main application as well. */ | |
252b5132 | 2774 | |
a7519a3c | 2775 | entries = 0; |
4dfe6ac6 | 2776 | for (i = htab->got_list; |
a7519a3c RH |
2777 | i ; i = alpha_elf_tdata(i)->got_link_next) |
2778 | { | |
2779 | bfd *j; | |
3241278a | 2780 | |
a7519a3c RH |
2781 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
2782 | { | |
2783 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2784 | int k, n; | |
252b5132 | 2785 | |
a7519a3c RH |
2786 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
2787 | if (!local_got_entries) | |
2788 | continue; | |
252b5132 | 2789 | |
a7519a3c RH |
2790 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
2791 | for (gotent = local_got_entries[k]; | |
2792 | gotent ; gotent = gotent->next) | |
2793 | if (gotent->use_count > 0) | |
2794 | entries += (alpha_dynamic_entries_for_reloc | |
0e1862bb L |
2795 | (gotent->reloc_type, 0, bfd_link_pic (info), |
2796 | bfd_link_pie (info))); | |
a7519a3c RH |
2797 | } |
2798 | } | |
3765b1be | 2799 | |
ce558b89 | 2800 | srel = elf_hash_table(info)->srelgot; |
a7519a3c RH |
2801 | if (!srel) |
2802 | { | |
2803 | BFD_ASSERT (entries == 0); | |
4a828aab | 2804 | return; |
a7519a3c RH |
2805 | } |
2806 | srel->size = sizeof (Elf64_External_Rela) * entries; | |
252b5132 | 2807 | |
a7519a3c | 2808 | /* Now do the non-local symbols. */ |
4dfe6ac6 | 2809 | alpha_elf_link_hash_traverse (htab, |
a7519a3c | 2810 | elf64_alpha_size_rela_got_1, info); |
a7519a3c | 2811 | } |
252b5132 | 2812 | |
a7519a3c | 2813 | /* Set the sizes of the dynamic sections. */ |
3765b1be | 2814 | |
a7519a3c RH |
2815 | static bfd_boolean |
2816 | elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2817 | struct bfd_link_info *info) | |
2818 | { | |
2819 | bfd *dynobj; | |
2820 | asection *s; | |
24f1a751 | 2821 | bfd_boolean relplt, relocs; |
4dfe6ac6 NC |
2822 | struct alpha_elf_link_hash_table * htab; |
2823 | ||
2824 | htab = alpha_elf_hash_table (info); | |
2825 | if (htab == NULL) | |
2826 | return FALSE; | |
3765b1be | 2827 | |
a7519a3c RH |
2828 | dynobj = elf_hash_table(info)->dynobj; |
2829 | BFD_ASSERT(dynobj != NULL); | |
252b5132 | 2830 | |
a7519a3c RH |
2831 | if (elf_hash_table (info)->dynamic_sections_created) |
2832 | { | |
2833 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 2834 | if (bfd_link_executable (info) && !info->nointerp) |
252b5132 | 2835 | { |
3d4d4302 | 2836 | s = bfd_get_linker_section (dynobj, ".interp"); |
a7519a3c RH |
2837 | BFD_ASSERT (s != NULL); |
2838 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2839 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2840 | } | |
3765b1be | 2841 | |
a7519a3c RH |
2842 | /* Now that we've seen all of the input files, we can decide which |
2843 | symbols need dynamic relocation entries and which don't. We've | |
2844 | collected information in check_relocs that we can now apply to | |
2845 | size the dynamic relocation sections. */ | |
4dfe6ac6 | 2846 | alpha_elf_link_hash_traverse (htab, |
a7519a3c | 2847 | elf64_alpha_calc_dynrel_sizes, info); |
252b5132 | 2848 | |
a7519a3c | 2849 | elf64_alpha_size_rela_got_section (info); |
6ec7057a | 2850 | elf64_alpha_size_plt_section (info); |
a7519a3c RH |
2851 | } |
2852 | /* else we're not dynamic and by definition we don't need such things. */ | |
3765b1be | 2853 | |
a7519a3c RH |
2854 | /* The check_relocs and adjust_dynamic_symbol entry points have |
2855 | determined the sizes of the various dynamic sections. Allocate | |
2856 | memory for them. */ | |
2857 | relplt = FALSE; | |
24f1a751 | 2858 | relocs = FALSE; |
a7519a3c RH |
2859 | for (s = dynobj->sections; s != NULL; s = s->next) |
2860 | { | |
2861 | const char *name; | |
3765b1be | 2862 | |
a7519a3c RH |
2863 | if (!(s->flags & SEC_LINKER_CREATED)) |
2864 | continue; | |
cc03ec80 | 2865 | |
a7519a3c RH |
2866 | /* It's OK to base decisions on the section name, because none |
2867 | of the dynobj section names depend upon the input files. */ | |
fd361982 | 2868 | name = bfd_section_name (s); |
3765b1be | 2869 | |
0112cd26 | 2870 | if (CONST_STRNEQ (name, ".rela")) |
3765b1be | 2871 | { |
c456f082 | 2872 | if (s->size != 0) |
a7519a3c | 2873 | { |
c456f082 | 2874 | if (strcmp (name, ".rela.plt") == 0) |
a7519a3c | 2875 | relplt = TRUE; |
24f1a751 AM |
2876 | else |
2877 | relocs = TRUE; | |
252b5132 | 2878 | |
a7519a3c RH |
2879 | /* We use the reloc_count field as a counter if we need |
2880 | to copy relocs into the output file. */ | |
2881 | s->reloc_count = 0; | |
252b5132 | 2882 | } |
3765b1be | 2883 | } |
0112cd26 | 2884 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 AM |
2885 | && strcmp (name, ".plt") != 0 |
2886 | && strcmp (name, ".dynbss") != 0) | |
3765b1be | 2887 | { |
a7519a3c RH |
2888 | /* It's not one of our dynamic sections, so don't allocate space. */ |
2889 | continue; | |
2890 | } | |
252b5132 | 2891 | |
c456f082 AM |
2892 | if (s->size == 0) |
2893 | { | |
2894 | /* If we don't need this section, strip it from the output file. | |
2895 | This is to handle .rela.bss and .rela.plt. We must create it | |
2896 | in create_dynamic_sections, because it must be created before | |
2897 | the linker maps input sections to output sections. The | |
2898 | linker does that before adjust_dynamic_symbol is called, and | |
2899 | it is that function which decides whether anything needs to | |
2900 | go into these sections. */ | |
6452a567 RH |
2901 | if (!CONST_STRNEQ (name, ".got")) |
2902 | s->flags |= SEC_EXCLUDE; | |
c456f082 AM |
2903 | } |
2904 | else if ((s->flags & SEC_HAS_CONTENTS) != 0) | |
a7519a3c RH |
2905 | { |
2906 | /* Allocate memory for the section contents. */ | |
2907 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
c456f082 | 2908 | if (s->contents == NULL) |
b34976b6 | 2909 | return FALSE; |
a7519a3c RH |
2910 | } |
2911 | } | |
3765b1be | 2912 | |
a7519a3c RH |
2913 | if (elf_hash_table (info)->dynamic_sections_created) |
2914 | { | |
2915 | /* Add some entries to the .dynamic section. We fill in the | |
2916 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
2917 | must add the entries now so that we get the correct size for | |
2918 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2919 | dynamic linker and used by the debugger. */ | |
2920 | #define add_dynamic_entry(TAG, VAL) \ | |
2921 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3765b1be | 2922 | |
0e1862bb | 2923 | if (bfd_link_executable (info)) |
a7519a3c RH |
2924 | { |
2925 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
2926 | return FALSE; | |
3765b1be RH |
2927 | } |
2928 | ||
a7519a3c | 2929 | if (relplt) |
3765b1be | 2930 | { |
a7519a3c RH |
2931 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2932 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2933 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2934 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
2935 | return FALSE; | |
6ec7057a RH |
2936 | |
2937 | if (elf64_alpha_use_secureplt | |
2938 | && !add_dynamic_entry (DT_ALPHA_PLTRO, 1)) | |
2939 | return FALSE; | |
a7519a3c | 2940 | } |
252b5132 | 2941 | |
24f1a751 | 2942 | if (relocs) |
a7519a3c | 2943 | { |
24f1a751 AM |
2944 | if (!add_dynamic_entry (DT_RELA, 0) |
2945 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2946 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
a7519a3c | 2947 | return FALSE; |
24f1a751 AM |
2948 | |
2949 | if (info->flags & DF_TEXTREL) | |
2950 | { | |
2951 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2952 | return FALSE; | |
2953 | } | |
252b5132 RH |
2954 | } |
2955 | } | |
a7519a3c | 2956 | #undef add_dynamic_entry |
252b5132 | 2957 | |
b34976b6 | 2958 | return TRUE; |
252b5132 | 2959 | } |
a7519a3c RH |
2960 | \f |
2961 | /* These functions do relaxation for Alpha ELF. | |
252b5132 | 2962 | |
a7519a3c RH |
2963 | Currently I'm only handling what I can do with existing compiler |
2964 | and assembler support, which means no instructions are removed, | |
2965 | though some may be nopped. At this time GCC does not emit enough | |
2966 | information to do all of the relaxing that is possible. It will | |
2967 | take some not small amount of work for that to happen. | |
252b5132 | 2968 | |
a7519a3c RH |
2969 | There are a couple of interesting papers that I once read on this |
2970 | subject, that I cannot find references to at the moment, that | |
2971 | related to Alpha in particular. They are by David Wall, then of | |
2972 | DEC WRL. */ | |
252b5132 | 2973 | |
a7519a3c RH |
2974 | struct alpha_relax_info |
2975 | { | |
2976 | bfd *abfd; | |
2977 | asection *sec; | |
2978 | bfd_byte *contents; | |
2979 | Elf_Internal_Shdr *symtab_hdr; | |
2980 | Elf_Internal_Rela *relocs, *relend; | |
2981 | struct bfd_link_info *link_info; | |
2982 | bfd_vma gp; | |
2983 | bfd *gotobj; | |
2984 | asection *tsec; | |
2985 | struct alpha_elf_link_hash_entry *h; | |
2986 | struct alpha_elf_got_entry **first_gotent; | |
2987 | struct alpha_elf_got_entry *gotent; | |
2988 | bfd_boolean changed_contents; | |
2989 | bfd_boolean changed_relocs; | |
2990 | unsigned char other; | |
2991 | }; | |
252b5132 | 2992 | |
a7519a3c RH |
2993 | static Elf_Internal_Rela * |
2994 | elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel, | |
2995 | Elf_Internal_Rela *relend, | |
2996 | bfd_vma offset, int type) | |
2997 | { | |
2998 | while (rel < relend) | |
252b5132 | 2999 | { |
a7519a3c RH |
3000 | if (rel->r_offset == offset |
3001 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
3002 | return rel; | |
3003 | ++rel; | |
3004 | } | |
3005 | return NULL; | |
3006 | } | |
252b5132 | 3007 | |
a7519a3c RH |
3008 | static bfd_boolean |
3009 | elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval, | |
3010 | Elf_Internal_Rela *irel, unsigned long r_type) | |
3011 | { | |
3012 | unsigned int insn; | |
3013 | bfd_signed_vma disp; | |
252b5132 | 3014 | |
a7519a3c RH |
3015 | /* Get the instruction. */ |
3016 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
252b5132 | 3017 | |
a7519a3c RH |
3018 | if (insn >> 26 != OP_LDQ) |
3019 | { | |
3020 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; | |
4eca0228 | 3021 | _bfd_error_handler |
695344c0 | 3022 | /* xgettext:c-format */ |
2dcf00ce AM |
3023 | (_("%pB: %pA+%#" PRIx64 ": warning: " |
3024 | "%s relocation against unexpected insn"), | |
3025 | info->abfd, info->sec, (uint64_t) irel->r_offset, howto->name); | |
a7519a3c RH |
3026 | return TRUE; |
3027 | } | |
252b5132 | 3028 | |
a7519a3c RH |
3029 | /* Can't relax dynamic symbols. */ |
3030 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
3031 | return TRUE; | |
252b5132 | 3032 | |
a7519a3c | 3033 | /* Can't use local-exec relocations in shared libraries. */ |
e366eeae | 3034 | if (r_type == R_ALPHA_GOTTPREL |
3cbc1e5e | 3035 | && bfd_link_dll (info->link_info)) |
a7519a3c | 3036 | return TRUE; |
252b5132 | 3037 | |
a7519a3c RH |
3038 | if (r_type == R_ALPHA_LITERAL) |
3039 | { | |
3040 | /* Look for nice constant addresses. This includes the not-uncommon | |
3041 | special case of 0 for undefweak symbols. */ | |
3042 | if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
0e1862bb | 3043 | || (!bfd_link_pic (info->link_info) |
a7519a3c RH |
3044 | && (symval >= (bfd_vma)-0x8000 || symval < 0x8000))) |
3045 | { | |
3046 | disp = 0; | |
3047 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
3048 | insn |= (symval & 0xffff); | |
3049 | r_type = R_ALPHA_NONE; | |
3050 | } | |
3051 | else | |
3052 | { | |
d1c109de RH |
3053 | /* We may only create GPREL relocs during the second pass. */ |
3054 | if (info->link_info->relax_pass == 0) | |
3055 | return TRUE; | |
3056 | ||
a7519a3c RH |
3057 | disp = symval - info->gp; |
3058 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
3059 | r_type = R_ALPHA_GPREL16; | |
3060 | } | |
252b5132 RH |
3061 | } |
3062 | else | |
252b5132 | 3063 | { |
a7519a3c | 3064 | bfd_vma dtp_base, tp_base; |
252b5132 | 3065 | |
a7519a3c RH |
3066 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
3067 | dtp_base = alpha_get_dtprel_base (info->link_info); | |
3068 | tp_base = alpha_get_tprel_base (info->link_info); | |
3069 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
252b5132 | 3070 | |
a7519a3c | 3071 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); |
252b5132 | 3072 | |
a7519a3c RH |
3073 | switch (r_type) |
3074 | { | |
3075 | case R_ALPHA_GOTDTPREL: | |
3076 | r_type = R_ALPHA_DTPREL16; | |
3077 | break; | |
3078 | case R_ALPHA_GOTTPREL: | |
3079 | r_type = R_ALPHA_TPREL16; | |
3080 | break; | |
3081 | default: | |
3082 | BFD_ASSERT (0); | |
3083 | return FALSE; | |
3084 | } | |
3085 | } | |
252b5132 | 3086 | |
a7519a3c | 3087 | if (disp < -0x8000 || disp >= 0x8000) |
b34976b6 | 3088 | return TRUE; |
252b5132 | 3089 | |
a7519a3c RH |
3090 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
3091 | info->changed_contents = TRUE; | |
252b5132 | 3092 | |
a7519a3c RH |
3093 | /* Reduce the use count on this got entry by one, possibly |
3094 | eliminating it. */ | |
3095 | if (--info->gotent->use_count == 0) | |
252b5132 | 3096 | { |
a7519a3c RH |
3097 | int sz = alpha_got_entry_size (r_type); |
3098 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3099 | if (!info->h) | |
3100 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3101 | } |
252b5132 | 3102 | |
a7519a3c RH |
3103 | /* Smash the existing GOT relocation for its 16-bit immediate pair. */ |
3104 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); | |
3105 | info->changed_relocs = TRUE; | |
3106 | ||
3107 | /* ??? Search forward through this basic block looking for insns | |
3108 | that use the target register. Stop after an insn modifying the | |
3109 | register is seen, or after a branch or call. | |
252b5132 | 3110 | |
a7519a3c RH |
3111 | Any such memory load insn may be substituted by a load directly |
3112 | off the GP. This allows the memory load insn to be issued before | |
3113 | the calculated GP register would otherwise be ready. | |
252b5132 | 3114 | |
a7519a3c RH |
3115 | Any such jsr insn can be replaced by a bsr if it is in range. |
3116 | ||
3117 | This would mean that we'd have to _add_ relocations, the pain of | |
3118 | which gives one pause. */ | |
252b5132 | 3119 | |
b34976b6 | 3120 | return TRUE; |
252b5132 RH |
3121 | } |
3122 | ||
a7519a3c RH |
3123 | static bfd_vma |
3124 | elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval) | |
252b5132 | 3125 | { |
a7519a3c RH |
3126 | /* If the function has the same gp, and we can identify that the |
3127 | function does not use its function pointer, we can eliminate the | |
3128 | address load. */ | |
252b5132 | 3129 | |
a7519a3c RH |
3130 | /* If the symbol is marked NOPV, we are being told the function never |
3131 | needs its procedure value. */ | |
3132 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) | |
3133 | return symval; | |
252b5132 | 3134 | |
a7519a3c RH |
3135 | /* If the symbol is marked STD_GP, we are being told the function does |
3136 | a normal ldgp in the first two words. */ | |
3137 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) | |
3138 | ; | |
252b5132 | 3139 | |
a7519a3c RH |
3140 | /* Otherwise, we may be able to identify a GP load in the first two |
3141 | words, which we can then skip. */ | |
3142 | else | |
252b5132 | 3143 | { |
a7519a3c RH |
3144 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; |
3145 | bfd_vma ofs; | |
252b5132 | 3146 | |
a7519a3c RH |
3147 | /* Load the relocations from the section that the target symbol is in. */ |
3148 | if (info->sec == info->tsec) | |
252b5132 | 3149 | { |
a7519a3c RH |
3150 | tsec_relocs = info->relocs; |
3151 | tsec_relend = info->relend; | |
3152 | tsec_free = NULL; | |
3153 | } | |
3154 | else | |
3155 | { | |
3156 | tsec_relocs = (_bfd_elf_link_read_relocs | |
07d6d2b8 | 3157 | (info->abfd, info->tsec, NULL, |
a7519a3c RH |
3158 | (Elf_Internal_Rela *) NULL, |
3159 | info->link_info->keep_memory)); | |
3160 | if (tsec_relocs == NULL) | |
3161 | return 0; | |
3162 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
ae4fda66 JC |
3163 | tsec_free = (elf_section_data (info->tsec)->relocs == tsec_relocs |
3164 | ? NULL | |
3165 | : tsec_relocs); | |
a7519a3c | 3166 | } |
252b5132 | 3167 | |
a7519a3c RH |
3168 | /* Recover the symbol's offset within the section. */ |
3169 | ofs = (symval - info->tsec->output_section->vma | |
3170 | - info->tsec->output_offset); | |
252b5132 | 3171 | |
a7519a3c RH |
3172 | /* Look for a GPDISP reloc. */ |
3173 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
3174 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
252b5132 | 3175 | |
a7519a3c RH |
3176 | if (!gpdisp || gpdisp->r_addend != 4) |
3177 | { | |
3178 | if (tsec_free) | |
3179 | free (tsec_free); | |
3180 | return 0; | |
252b5132 | 3181 | } |
a7519a3c | 3182 | if (tsec_free) |
07d6d2b8 | 3183 | free (tsec_free); |
252b5132 RH |
3184 | } |
3185 | ||
a7519a3c RH |
3186 | /* We've now determined that we can skip an initial gp load. Verify |
3187 | that the call and the target use the same gp. */ | |
f13a99db | 3188 | if (info->link_info->output_bfd->xvec != info->tsec->owner->xvec |
a7519a3c RH |
3189 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) |
3190 | return 0; | |
252b5132 | 3191 | |
a7519a3c RH |
3192 | return symval + 8; |
3193 | } | |
252b5132 | 3194 | |
a7519a3c RH |
3195 | static bfd_boolean |
3196 | elf64_alpha_relax_with_lituse (struct alpha_relax_info *info, | |
3197 | bfd_vma symval, Elf_Internal_Rela *irel) | |
252b5132 | 3198 | { |
d1c109de RH |
3199 | Elf_Internal_Rela *urel, *erel, *irelend = info->relend; |
3200 | int flags; | |
a7519a3c RH |
3201 | bfd_signed_vma disp; |
3202 | bfd_boolean fits16; | |
3203 | bfd_boolean fits32; | |
3204 | bfd_boolean lit_reused = FALSE; | |
3205 | bfd_boolean all_optimized = TRUE; | |
d1c109de RH |
3206 | bfd_boolean changed_contents; |
3207 | bfd_boolean changed_relocs; | |
3208 | bfd_byte *contents = info->contents; | |
3209 | bfd *abfd = info->abfd; | |
3210 | bfd_vma sec_output_vma; | |
a7519a3c | 3211 | unsigned int lit_insn; |
d1c109de | 3212 | int relax_pass; |
252b5132 | 3213 | |
d1c109de | 3214 | lit_insn = bfd_get_32 (abfd, contents + irel->r_offset); |
a7519a3c RH |
3215 | if (lit_insn >> 26 != OP_LDQ) |
3216 | { | |
4eca0228 | 3217 | _bfd_error_handler |
695344c0 | 3218 | /* xgettext:c-format */ |
2dcf00ce | 3219 | (_("%pB: %pA+%#" PRIx64 ": warning: " |
38f14ab8 AM |
3220 | "%s relocation against unexpected insn"), |
3221 | abfd, info->sec, (uint64_t) irel->r_offset, "LITERAL"); | |
a7519a3c RH |
3222 | return TRUE; |
3223 | } | |
252b5132 | 3224 | |
a7519a3c RH |
3225 | /* Can't relax dynamic symbols. */ |
3226 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
3227 | return TRUE; | |
3228 | ||
d1c109de RH |
3229 | changed_contents = info->changed_contents; |
3230 | changed_relocs = info->changed_relocs; | |
3231 | sec_output_vma = info->sec->output_section->vma + info->sec->output_offset; | |
3232 | relax_pass = info->link_info->relax_pass; | |
3233 | ||
a7519a3c | 3234 | /* Summarize how this particular LITERAL is used. */ |
d1c109de | 3235 | for (erel = irel+1, flags = 0; erel < irelend; ++erel) |
252b5132 | 3236 | { |
d1c109de | 3237 | if (ELF64_R_TYPE (erel->r_info) != R_ALPHA_LITUSE) |
a7519a3c | 3238 | break; |
d1c109de RH |
3239 | if (erel->r_addend <= 6) |
3240 | flags |= 1 << erel->r_addend; | |
a7519a3c | 3241 | } |
252b5132 | 3242 | |
a7519a3c RH |
3243 | /* A little preparation for the loop... */ |
3244 | disp = symval - info->gp; | |
252b5132 | 3245 | |
d1c109de | 3246 | for (urel = irel+1; urel < erel; ++urel) |
a7519a3c | 3247 | { |
d1c109de | 3248 | bfd_vma urel_r_offset = urel->r_offset; |
a7519a3c RH |
3249 | unsigned int insn; |
3250 | int insn_disp; | |
3251 | bfd_signed_vma xdisp; | |
d1c109de | 3252 | Elf_Internal_Rela nrel; |
252b5132 | 3253 | |
d1c109de | 3254 | insn = bfd_get_32 (abfd, contents + urel_r_offset); |
252b5132 | 3255 | |
a7519a3c RH |
3256 | switch (urel->r_addend) |
3257 | { | |
3258 | case LITUSE_ALPHA_ADDR: | |
3259 | default: | |
3260 | /* This type is really just a placeholder to note that all | |
3261 | uses cannot be optimized, but to still allow some. */ | |
3262 | all_optimized = FALSE; | |
3263 | break; | |
252b5132 | 3264 | |
a7519a3c | 3265 | case LITUSE_ALPHA_BASE: |
d1c109de RH |
3266 | /* We may only create GPREL relocs during the second pass. */ |
3267 | if (relax_pass == 0) | |
3268 | { | |
3269 | all_optimized = FALSE; | |
3270 | break; | |
3271 | } | |
3272 | ||
a7519a3c | 3273 | /* We can always optimize 16-bit displacements. */ |
252b5132 | 3274 | |
a7519a3c RH |
3275 | /* Extract the displacement from the instruction, sign-extending |
3276 | it if necessary, then test whether it is within 16 or 32 bits | |
3277 | displacement from GP. */ | |
3278 | insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
3279 | ||
3280 | xdisp = disp + insn_disp; | |
3281 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); | |
3282 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
3283 | && xdisp < 0x7fff8000); | |
3284 | ||
3285 | if (fits16) | |
3286 | { | |
3287 | /* Take the op code and dest from this insn, take the base | |
3288 | register from the literal insn. Leave the offset alone. */ | |
3289 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); | |
d1c109de RH |
3290 | bfd_put_32 (abfd, (bfd_vma) insn, contents + urel_r_offset); |
3291 | changed_contents = TRUE; | |
3292 | ||
3293 | nrel = *urel; | |
3294 | nrel.r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
3295 | R_ALPHA_GPREL16); | |
3296 | nrel.r_addend = irel->r_addend; | |
3297 | ||
3298 | /* As we adjust, move the reloc to the end so that we don't | |
07d6d2b8 | 3299 | break the LITERAL+LITUSE chain. */ |
d1c109de | 3300 | if (urel < --erel) |
07d6d2b8 | 3301 | *urel-- = *erel; |
d1c109de RH |
3302 | *erel = nrel; |
3303 | changed_relocs = TRUE; | |
252b5132 | 3304 | } |
252b5132 | 3305 | |
a7519a3c RH |
3306 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ |
3307 | else if (fits32 && !(flags & ~6)) | |
3308 | { | |
3309 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ | |
252b5132 | 3310 | |
a7519a3c RH |
3311 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3312 | R_ALPHA_GPRELHIGH); | |
3313 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
d1c109de | 3314 | bfd_put_32 (abfd, (bfd_vma) lit_insn, contents + irel->r_offset); |
a7519a3c | 3315 | lit_reused = TRUE; |
d1c109de | 3316 | changed_contents = TRUE; |
252b5132 | 3317 | |
07d6d2b8 AM |
3318 | /* Since all relocs must be optimized, don't bother swapping |
3319 | this relocation to the end. */ | |
a7519a3c RH |
3320 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
3321 | R_ALPHA_GPRELLOW); | |
3322 | urel->r_addend = irel->r_addend; | |
d1c109de | 3323 | changed_relocs = TRUE; |
a7519a3c RH |
3324 | } |
3325 | else | |
3326 | all_optimized = FALSE; | |
3327 | break; | |
252b5132 | 3328 | |
a7519a3c RH |
3329 | case LITUSE_ALPHA_BYTOFF: |
3330 | /* We can always optimize byte instructions. */ | |
252b5132 | 3331 | |
a7519a3c RH |
3332 | /* FIXME: sanity check the insn for byte op. Check that the |
3333 | literal dest reg is indeed Rb in the byte insn. */ | |
252b5132 | 3334 | |
a7519a3c RH |
3335 | insn &= ~ (unsigned) 0x001ff000; |
3336 | insn |= ((symval & 7) << 13) | 0x1000; | |
d1c109de RH |
3337 | bfd_put_32 (abfd, (bfd_vma) insn, contents + urel_r_offset); |
3338 | changed_contents = TRUE; | |
3339 | ||
3340 | nrel = *urel; | |
3341 | nrel.r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3342 | nrel.r_addend = 0; | |
3343 | ||
3344 | /* As we adjust, move the reloc to the end so that we don't | |
3345 | break the LITERAL+LITUSE chain. */ | |
3346 | if (urel < --erel) | |
3347 | *urel-- = *erel; | |
3348 | *erel = nrel; | |
3349 | changed_relocs = TRUE; | |
a7519a3c | 3350 | break; |
252b5132 | 3351 | |
a7519a3c RH |
3352 | case LITUSE_ALPHA_JSR: |
3353 | case LITUSE_ALPHA_TLSGD: | |
3354 | case LITUSE_ALPHA_TLSLDM: | |
8288a39e | 3355 | case LITUSE_ALPHA_JSRDIRECT: |
0d5f9994 | 3356 | { |
a7519a3c RH |
3357 | bfd_vma optdest, org; |
3358 | bfd_signed_vma odisp; | |
252b5132 | 3359 | |
a7519a3c RH |
3360 | /* For undefined weak symbols, we're mostly interested in getting |
3361 | rid of the got entry whenever possible, so optimize this to a | |
3362 | use of the zero register. */ | |
3363 | if (info->h && info->h->root.root.type == bfd_link_hash_undefweak) | |
3364 | { | |
3365 | insn |= 31 << 16; | |
d1c109de | 3366 | bfd_put_32 (abfd, (bfd_vma) insn, contents + urel_r_offset); |
252b5132 | 3367 | |
d1c109de | 3368 | changed_contents = TRUE; |
a7519a3c RH |
3369 | break; |
3370 | } | |
252b5132 | 3371 | |
a7519a3c RH |
3372 | /* If not zero, place to jump without needing pv. */ |
3373 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
d1c109de | 3374 | org = sec_output_vma + urel_r_offset + 4; |
a7519a3c | 3375 | odisp = (optdest ? optdest : symval) - org; |
252b5132 | 3376 | |
a7519a3c RH |
3377 | if (odisp >= -0x400000 && odisp < 0x400000) |
3378 | { | |
3379 | Elf_Internal_Rela *xrel; | |
252b5132 | 3380 | |
a7519a3c RH |
3381 | /* Preserve branch prediction call stack when possible. */ |
3382 | if ((insn & INSN_JSR_MASK) == INSN_JSR) | |
3383 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
3384 | else | |
3385 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
d1c109de RH |
3386 | bfd_put_32 (abfd, (bfd_vma) insn, contents + urel_r_offset); |
3387 | changed_contents = TRUE; | |
252b5132 | 3388 | |
d1c109de RH |
3389 | nrel = *urel; |
3390 | nrel.r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
3391 | R_ALPHA_BRADDR); | |
3392 | nrel.r_addend = irel->r_addend; | |
252b5132 | 3393 | |
a7519a3c | 3394 | if (optdest) |
d1c109de | 3395 | nrel.r_addend += optdest - symval; |
a7519a3c RH |
3396 | else |
3397 | all_optimized = FALSE; | |
252b5132 | 3398 | |
a7519a3c RH |
3399 | /* Kill any HINT reloc that might exist for this insn. */ |
3400 | xrel = (elf64_alpha_find_reloc_at_ofs | |
d1c109de | 3401 | (info->relocs, info->relend, urel_r_offset, |
a7519a3c RH |
3402 | R_ALPHA_HINT)); |
3403 | if (xrel) | |
3404 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3405 | |
d1c109de RH |
3406 | /* As we adjust, move the reloc to the end so that we don't |
3407 | break the LITERAL+LITUSE chain. */ | |
3408 | if (urel < --erel) | |
3409 | *urel-- = *erel; | |
3410 | *erel = nrel; | |
3411 | ||
a7519a3c RH |
3412 | info->changed_relocs = TRUE; |
3413 | } | |
3414 | else | |
3415 | all_optimized = FALSE; | |
252b5132 | 3416 | |
a7519a3c RH |
3417 | /* Even if the target is not in range for a direct branch, |
3418 | if we share a GP, we can eliminate the gp reload. */ | |
3419 | if (optdest) | |
3420 | { | |
3421 | Elf_Internal_Rela *gpdisp | |
3422 | = (elf64_alpha_find_reloc_at_ofs | |
d1c109de | 3423 | (info->relocs, irelend, urel_r_offset + 4, |
a7519a3c RH |
3424 | R_ALPHA_GPDISP)); |
3425 | if (gpdisp) | |
3426 | { | |
d1c109de | 3427 | bfd_byte *p_ldah = contents + gpdisp->r_offset; |
a7519a3c | 3428 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; |
d1c109de RH |
3429 | unsigned int ldah = bfd_get_32 (abfd, p_ldah); |
3430 | unsigned int lda = bfd_get_32 (abfd, p_lda); | |
252b5132 | 3431 | |
a7519a3c RH |
3432 | /* Verify that the instruction is "ldah $29,0($26)". |
3433 | Consider a function that ends in a noreturn call, | |
3434 | and that the next function begins with an ldgp, | |
3435 | and that by accident there is no padding between. | |
3436 | In that case the insn would use $27 as the base. */ | |
3437 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
3438 | { | |
d1c109de RH |
3439 | bfd_put_32 (abfd, (bfd_vma) INSN_UNOP, p_ldah); |
3440 | bfd_put_32 (abfd, (bfd_vma) INSN_UNOP, p_lda); | |
252b5132 | 3441 | |
a7519a3c | 3442 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
d1c109de RH |
3443 | changed_contents = TRUE; |
3444 | changed_relocs = TRUE; | |
a7519a3c RH |
3445 | } |
3446 | } | |
3447 | } | |
3448 | } | |
3449 | break; | |
252b5132 | 3450 | } |
252b5132 RH |
3451 | } |
3452 | ||
d1c109de RH |
3453 | /* If we reused the literal instruction, we must have optimized all. */ |
3454 | BFD_ASSERT(!lit_reused || all_optimized); | |
3455 | ||
a7519a3c RH |
3456 | /* If all cases were optimized, we can reduce the use count on this |
3457 | got entry by one, possibly eliminating it. */ | |
3458 | if (all_optimized) | |
252b5132 | 3459 | { |
a7519a3c | 3460 | if (--info->gotent->use_count == 0) |
252b5132 | 3461 | { |
a7519a3c RH |
3462 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
3463 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3464 | if (!info->h) | |
3465 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
252b5132 | 3466 | } |
a7519a3c RH |
3467 | |
3468 | /* If the literal instruction is no longer needed (it may have been | |
3469 | reused. We can eliminate it. */ | |
3470 | /* ??? For now, I don't want to deal with compacting the section, | |
3471 | so just nop it out. */ | |
3472 | if (!lit_reused) | |
252b5132 | 3473 | { |
a7519a3c | 3474 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
d1c109de | 3475 | changed_relocs = TRUE; |
252b5132 | 3476 | |
d1c109de RH |
3477 | bfd_put_32 (abfd, (bfd_vma) INSN_UNOP, contents + irel->r_offset); |
3478 | changed_contents = TRUE; | |
a7519a3c | 3479 | } |
a7519a3c | 3480 | } |
d1c109de RH |
3481 | |
3482 | info->changed_contents = changed_contents; | |
3483 | info->changed_relocs = changed_relocs; | |
3484 | ||
3485 | if (all_optimized || relax_pass == 0) | |
3486 | return TRUE; | |
3487 | return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL); | |
252b5132 RH |
3488 | } |
3489 | ||
b34976b6 | 3490 | static bfd_boolean |
a7519a3c RH |
3491 | elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval, |
3492 | Elf_Internal_Rela *irel, bfd_boolean is_gd) | |
f44f99a5 | 3493 | { |
a7519a3c | 3494 | bfd_byte *pos[5]; |
891caa9b | 3495 | unsigned int insn, tlsgd_reg; |
a7519a3c | 3496 | Elf_Internal_Rela *gpdisp, *hint; |
891caa9b | 3497 | bfd_boolean dynamic, use_gottprel; |
a7519a3c | 3498 | unsigned long new_symndx; |
f44f99a5 | 3499 | |
a7519a3c | 3500 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); |
f44f99a5 | 3501 | |
a7519a3c RH |
3502 | /* If a TLS symbol is accessed using IE at least once, there is no point |
3503 | to use dynamic model for it. */ | |
3504 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
3505 | ; | |
f44f99a5 | 3506 | |
a7519a3c RH |
3507 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, |
3508 | then we might as well relax to IE. */ | |
0e1862bb | 3509 | else if (bfd_link_pic (info->link_info) && !dynamic |
a7519a3c RH |
3510 | && (info->link_info->flags & DF_STATIC_TLS)) |
3511 | ; | |
f44f99a5 | 3512 | |
a7519a3c | 3513 | /* Otherwise we must be building an executable to do anything. */ |
0e1862bb | 3514 | else if (bfd_link_pic (info->link_info)) |
a7519a3c | 3515 | return TRUE; |
f44f99a5 | 3516 | |
a7519a3c RH |
3517 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and |
3518 | the matching LITUSE_TLS relocations. */ | |
3519 | if (irel + 2 >= info->relend) | |
3520 | return TRUE; | |
3521 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL | |
3522 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
3523 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
3524 | return TRUE; | |
f44f99a5 | 3525 | |
a7519a3c RH |
3526 | /* There must be a GPDISP relocation positioned immediately after the |
3527 | LITUSE relocation. */ | |
3528 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
3529 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
3530 | if (!gpdisp) | |
b34976b6 | 3531 | return TRUE; |
f44f99a5 | 3532 | |
a7519a3c RH |
3533 | pos[0] = info->contents + irel[0].r_offset; |
3534 | pos[1] = info->contents + irel[1].r_offset; | |
3535 | pos[2] = info->contents + irel[2].r_offset; | |
3536 | pos[3] = info->contents + gpdisp->r_offset; | |
3537 | pos[4] = pos[3] + gpdisp->r_addend; | |
f44f99a5 | 3538 | |
7dbf3b76 RH |
3539 | /* Beware of the compiler hoisting part of the sequence out a loop |
3540 | and adjusting the destination register for the TLSGD insn. If this | |
3541 | happens, there will be a move into $16 before the JSR insn, so only | |
3542 | transformations of the first insn pair should use this register. */ | |
3543 | tlsgd_reg = bfd_get_32 (info->abfd, pos[0]); | |
3544 | tlsgd_reg = (tlsgd_reg >> 21) & 31; | |
3545 | ||
a7519a3c RH |
3546 | /* Generally, the positions are not allowed to be out of order, lest the |
3547 | modified insn sequence have different register lifetimes. We can make | |
3548 | an exception when pos 1 is adjacent to pos 0. */ | |
3549 | if (pos[1] + 4 == pos[0]) | |
f44f99a5 | 3550 | { |
a7519a3c RH |
3551 | bfd_byte *tmp = pos[0]; |
3552 | pos[0] = pos[1]; | |
3553 | pos[1] = tmp; | |
f44f99a5 | 3554 | } |
a7519a3c RH |
3555 | if (pos[1] >= pos[2] || pos[2] >= pos[3]) |
3556 | return TRUE; | |
cc03ec80 | 3557 | |
a7519a3c RH |
3558 | /* Reduce the use count on the LITERAL relocation. Do this before we |
3559 | smash the symndx when we adjust the relocations below. */ | |
3560 | { | |
3561 | struct alpha_elf_got_entry *lit_gotent; | |
3562 | struct alpha_elf_link_hash_entry *lit_h; | |
3563 | unsigned long indx; | |
f44f99a5 | 3564 | |
a7519a3c RH |
3565 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); |
3566 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
3567 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
f44f99a5 | 3568 | |
a7519a3c RH |
3569 | while (lit_h->root.root.type == bfd_link_hash_indirect |
3570 | || lit_h->root.root.type == bfd_link_hash_warning) | |
3571 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
252b5132 | 3572 | |
a7519a3c RH |
3573 | for (lit_gotent = lit_h->got_entries; lit_gotent ; |
3574 | lit_gotent = lit_gotent->next) | |
3575 | if (lit_gotent->gotobj == info->gotobj | |
3576 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
3577 | && lit_gotent->addend == irel[1].r_addend) | |
3578 | break; | |
3579 | BFD_ASSERT (lit_gotent); | |
252b5132 | 3580 | |
a7519a3c RH |
3581 | if (--lit_gotent->use_count == 0) |
3582 | { | |
3583 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
3584 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3585 | } | |
3586 | } | |
252b5132 | 3587 | |
a7519a3c | 3588 | /* Change |
252b5132 | 3589 | |
a7519a3c RH |
3590 | lda $16,x($gp) !tlsgd!1 |
3591 | ldq $27,__tls_get_addr($gp) !literal!1 | |
3592 | jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 | |
3593 | ldah $29,0($26) !gpdisp!2 | |
3594 | lda $29,0($29) !gpdisp!2 | |
3595 | to | |
3596 | ldq $16,x($gp) !gottprel | |
3597 | unop | |
3598 | call_pal rduniq | |
3599 | addq $16,$0,$0 | |
3600 | unop | |
3601 | or the first pair to | |
3602 | lda $16,x($gp) !tprel | |
3603 | unop | |
3604 | or | |
3605 | ldah $16,x($gp) !tprelhi | |
3606 | lda $16,x($16) !tprello | |
3607 | ||
3608 | as appropriate. */ | |
3609 | ||
3610 | use_gottprel = FALSE; | |
cf35638d | 3611 | new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : STN_UNDEF; |
891caa9b | 3612 | |
9a757e4d RM |
3613 | /* Some compilers warn about a Boolean-looking expression being |
3614 | used in a switch. The explicit cast silences them. */ | |
0e1862bb | 3615 | switch ((int) (!dynamic && !bfd_link_pic (info->link_info))) |
252b5132 | 3616 | { |
a7519a3c RH |
3617 | case 1: |
3618 | { | |
3619 | bfd_vma tp_base; | |
3620 | bfd_signed_vma disp; | |
252b5132 | 3621 | |
a7519a3c RH |
3622 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
3623 | tp_base = alpha_get_tprel_base (info->link_info); | |
3624 | disp = symval - tp_base; | |
252b5132 | 3625 | |
a7519a3c RH |
3626 | if (disp >= -0x8000 && disp < 0x8000) |
3627 | { | |
891caa9b | 3628 | insn = (OP_LDA << 26) | (tlsgd_reg << 21) | (31 << 16); |
a7519a3c RH |
3629 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); |
3630 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3765b1be | 3631 | |
a7519a3c RH |
3632 | irel[0].r_offset = pos[0] - info->contents; |
3633 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); | |
3634 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3635 | break; | |
3636 | } | |
3637 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
3638 | && disp < (bfd_signed_vma) 0x7fff8000 | |
891caa9b | 3639 | && pos[0] + 4 == pos[1]) |
a7519a3c | 3640 | { |
891caa9b | 3641 | insn = (OP_LDAH << 26) | (tlsgd_reg << 21) | (31 << 16); |
a7519a3c | 3642 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); |
891caa9b | 3643 | insn = (OP_LDA << 26) | (tlsgd_reg << 21) | (tlsgd_reg << 16); |
a7519a3c | 3644 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); |
3765b1be | 3645 | |
a7519a3c RH |
3646 | irel[0].r_offset = pos[0] - info->contents; |
3647 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); | |
3648 | irel[1].r_offset = pos[1] - info->contents; | |
3649 | irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); | |
3650 | break; | |
3651 | } | |
3652 | } | |
3653 | /* FALLTHRU */ | |
3765b1be | 3654 | |
3765b1be | 3655 | default: |
a7519a3c RH |
3656 | use_gottprel = TRUE; |
3657 | ||
891caa9b | 3658 | insn = (OP_LDQ << 26) | (tlsgd_reg << 21) | (29 << 16); |
a7519a3c RH |
3659 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); |
3660 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
3661 | ||
3662 | irel[0].r_offset = pos[0] - info->contents; | |
3663 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); | |
3664 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
3665 | break; | |
3765b1be | 3666 | } |
3765b1be | 3667 | |
a7519a3c | 3668 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); |
252b5132 | 3669 | |
a7519a3c RH |
3670 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); |
3671 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
3765b1be | 3672 | |
a7519a3c | 3673 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); |
e92d460e | 3674 | |
a7519a3c RH |
3675 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
3676 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3677 | |
a7519a3c RH |
3678 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, |
3679 | irel[2].r_offset, R_ALPHA_HINT); | |
3680 | if (hint) | |
3681 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
252b5132 | 3682 | |
a7519a3c RH |
3683 | info->changed_contents = TRUE; |
3684 | info->changed_relocs = TRUE; | |
d6ad34f6 | 3685 | |
a7519a3c RH |
3686 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ |
3687 | if (--info->gotent->use_count == 0) | |
3765b1be | 3688 | { |
a7519a3c RH |
3689 | int sz = alpha_got_entry_size (info->gotent->reloc_type); |
3690 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3691 | if (!info->h) | |
3692 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
3765b1be | 3693 | } |
252b5132 | 3694 | |
a7519a3c RH |
3695 | /* If we've switched to a GOTTPREL relocation, increment the reference |
3696 | count on that got entry. */ | |
3697 | if (use_gottprel) | |
f44f99a5 | 3698 | { |
a7519a3c | 3699 | struct alpha_elf_got_entry *tprel_gotent; |
f44f99a5 | 3700 | |
a7519a3c RH |
3701 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; |
3702 | tprel_gotent = tprel_gotent->next) | |
3703 | if (tprel_gotent->gotobj == info->gotobj | |
3704 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
3705 | && tprel_gotent->addend == irel->r_addend) | |
3706 | break; | |
3707 | if (tprel_gotent) | |
3708 | tprel_gotent->use_count++; | |
3709 | else | |
f44f99a5 | 3710 | { |
a7519a3c RH |
3711 | if (info->gotent->use_count == 0) |
3712 | tprel_gotent = info->gotent; | |
3713 | else | |
3714 | { | |
3715 | tprel_gotent = (struct alpha_elf_got_entry *) | |
3716 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
3717 | if (!tprel_gotent) | |
3718 | return FALSE; | |
f44f99a5 | 3719 | |
a7519a3c RH |
3720 | tprel_gotent->next = *info->first_gotent; |
3721 | *info->first_gotent = tprel_gotent; | |
f44f99a5 | 3722 | |
a7519a3c RH |
3723 | tprel_gotent->gotobj = info->gotobj; |
3724 | tprel_gotent->addend = irel->r_addend; | |
3725 | tprel_gotent->got_offset = -1; | |
3726 | tprel_gotent->reloc_done = 0; | |
3727 | tprel_gotent->reloc_xlated = 0; | |
3728 | } | |
f44f99a5 | 3729 | |
a7519a3c RH |
3730 | tprel_gotent->use_count = 1; |
3731 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
3732 | } | |
f44f99a5 | 3733 | } |
f44f99a5 | 3734 | |
b34976b6 | 3735 | return TRUE; |
f44f99a5 RH |
3736 | } |
3737 | ||
b34976b6 | 3738 | static bfd_boolean |
a7519a3c RH |
3739 | elf64_alpha_relax_section (bfd *abfd, asection *sec, |
3740 | struct bfd_link_info *link_info, bfd_boolean *again) | |
f44f99a5 | 3741 | { |
a7519a3c RH |
3742 | Elf_Internal_Shdr *symtab_hdr; |
3743 | Elf_Internal_Rela *internal_relocs; | |
3744 | Elf_Internal_Rela *irel, *irelend; | |
3745 | Elf_Internal_Sym *isymbuf = NULL; | |
3746 | struct alpha_elf_got_entry **local_got_entries; | |
3747 | struct alpha_relax_info info; | |
4dfe6ac6 | 3748 | struct alpha_elf_link_hash_table * htab; |
d1c109de | 3749 | int relax_pass; |
4dfe6ac6 NC |
3750 | |
3751 | htab = alpha_elf_hash_table (link_info); | |
3752 | if (htab == NULL) | |
3753 | return FALSE; | |
f44f99a5 | 3754 | |
4a828aab | 3755 | /* There's nothing to change, yet. */ |
a7519a3c | 3756 | *again = FALSE; |
f44f99a5 | 3757 | |
0e1862bb | 3758 | if (bfd_link_relocatable (link_info) |
a7519a3c RH |
3759 | || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC)) |
3760 | != (SEC_CODE | SEC_RELOC | SEC_ALLOC)) | |
3761 | || sec->reloc_count == 0) | |
d6ad34f6 RH |
3762 | return TRUE; |
3763 | ||
0ffa91dd | 3764 | BFD_ASSERT (is_alpha_elf (abfd)); |
d1c109de | 3765 | relax_pass = link_info->relax_pass; |
0ffa91dd | 3766 | |
4a828aab | 3767 | /* Make sure our GOT and PLT tables are up-to-date. */ |
4dfe6ac6 | 3768 | if (htab->relax_trip != link_info->relax_trip) |
4a828aab | 3769 | { |
4dfe6ac6 | 3770 | htab->relax_trip = link_info->relax_trip; |
4a828aab | 3771 | |
d1c109de | 3772 | /* This should never fail after the initial round, since the only error |
07d6d2b8 | 3773 | is GOT overflow, and relaxation only shrinks the table. However, we |
d1c109de RH |
3774 | may only merge got sections during the first pass. If we merge |
3775 | sections after we've created GPREL relocs, the GP for the merged | |
3776 | section backs up which may put the relocs out of range. */ | |
3777 | if (!elf64_alpha_size_got_sections (link_info, relax_pass == 0)) | |
4a828aab RH |
3778 | abort (); |
3779 | if (elf_hash_table (link_info)->dynamic_sections_created) | |
3780 | { | |
3781 | elf64_alpha_size_plt_section (link_info); | |
3782 | elf64_alpha_size_rela_got_section (link_info); | |
3783 | } | |
3784 | } | |
3785 | ||
0ffa91dd | 3786 | symtab_hdr = &elf_symtab_hdr (abfd); |
a7519a3c | 3787 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
252b5132 | 3788 | |
a7519a3c RH |
3789 | /* Load the relocations for this section. */ |
3790 | internal_relocs = (_bfd_elf_link_read_relocs | |
2c3fc389 | 3791 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
a7519a3c RH |
3792 | link_info->keep_memory)); |
3793 | if (internal_relocs == NULL) | |
3794 | return FALSE; | |
252b5132 | 3795 | |
a7519a3c RH |
3796 | memset(&info, 0, sizeof (info)); |
3797 | info.abfd = abfd; | |
3798 | info.sec = sec; | |
3799 | info.link_info = link_info; | |
3800 | info.symtab_hdr = symtab_hdr; | |
3801 | info.relocs = internal_relocs; | |
3802 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
3803 | ||
3804 | /* Find the GP for this object. Do not store the result back via | |
3805 | _bfd_set_gp_value, since this could change again before final. */ | |
3806 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; | |
3807 | if (info.gotobj) | |
3765b1be | 3808 | { |
a7519a3c RH |
3809 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; |
3810 | info.gp = (sgot->output_section->vma | |
3811 | + sgot->output_offset | |
3812 | + 0x8000); | |
252b5132 RH |
3813 | } |
3814 | ||
a7519a3c RH |
3815 | /* Get the section contents. */ |
3816 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3817 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
3818 | else | |
3819 | { | |
3820 | if (!bfd_malloc_and_get_section (abfd, sec, &info.contents)) | |
3821 | goto error_return; | |
3822 | } | |
252b5132 | 3823 | |
a7519a3c RH |
3824 | for (irel = internal_relocs; irel < irelend; irel++) |
3825 | { | |
3826 | bfd_vma symval; | |
3827 | struct alpha_elf_got_entry *gotent; | |
3828 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
3829 | unsigned long r_symndx = ELF64_R_SYM (irel->r_info); | |
3830 | ||
3831 | /* Early exit for unhandled or unrelaxable relocations. */ | |
d1c109de | 3832 | if (r_type != R_ALPHA_LITERAL) |
07d6d2b8 AM |
3833 | { |
3834 | /* We complete everything except LITERAL in the first pass. */ | |
d1c109de RH |
3835 | if (relax_pass != 0) |
3836 | continue; | |
3837 | if (r_type == R_ALPHA_TLSLDM) | |
3838 | { | |
3839 | /* The symbol for a TLSLDM reloc is ignored. Collapse the | |
07d6d2b8 | 3840 | reloc to the STN_UNDEF (0) symbol so that they all match. */ |
d1c109de RH |
3841 | r_symndx = STN_UNDEF; |
3842 | } | |
3843 | else if (r_type != R_ALPHA_GOTDTPREL | |
07d6d2b8 | 3844 | && r_type != R_ALPHA_GOTTPREL |
d1c109de RH |
3845 | && r_type != R_ALPHA_TLSGD) |
3846 | continue; | |
a7519a3c RH |
3847 | } |
3848 | ||
3849 | /* Get the value of the symbol referred to by the reloc. */ | |
3850 | if (r_symndx < symtab_hdr->sh_info) | |
3851 | { | |
3852 | /* A local symbol. */ | |
3853 | Elf_Internal_Sym *isym; | |
3854 | ||
3855 | /* Read this BFD's local symbols. */ | |
3856 | if (isymbuf == NULL) | |
3857 | { | |
3858 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3859 | if (isymbuf == NULL) | |
3860 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
3861 | symtab_hdr->sh_info, 0, | |
3862 | NULL, NULL, NULL); | |
3863 | if (isymbuf == NULL) | |
3864 | goto error_return; | |
3865 | } | |
252b5132 | 3866 | |
a7519a3c | 3867 | isym = isymbuf + r_symndx; |
252b5132 | 3868 | |
a7519a3c RH |
3869 | /* Given the symbol for a TLSLDM reloc is ignored, this also |
3870 | means forcing the symbol value to the tp base. */ | |
3871 | if (r_type == R_ALPHA_TLSLDM) | |
3872 | { | |
3873 | info.tsec = bfd_abs_section_ptr; | |
3874 | symval = alpha_get_tprel_base (info.link_info); | |
3875 | } | |
3876 | else | |
3877 | { | |
3878 | symval = isym->st_value; | |
3879 | if (isym->st_shndx == SHN_UNDEF) | |
07d6d2b8 | 3880 | continue; |
a7519a3c | 3881 | else if (isym->st_shndx == SHN_ABS) |
07d6d2b8 | 3882 | info.tsec = bfd_abs_section_ptr; |
a7519a3c | 3883 | else if (isym->st_shndx == SHN_COMMON) |
07d6d2b8 | 3884 | info.tsec = bfd_com_section_ptr; |
a7519a3c | 3885 | else |
07d6d2b8 | 3886 | info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
a7519a3c | 3887 | } |
252b5132 | 3888 | |
a7519a3c RH |
3889 | info.h = NULL; |
3890 | info.other = isym->st_other; | |
3891 | if (local_got_entries) | |
3892 | info.first_gotent = &local_got_entries[r_symndx]; | |
3893 | else | |
3894 | { | |
3895 | info.first_gotent = &info.gotent; | |
3896 | info.gotent = NULL; | |
3897 | } | |
252b5132 | 3898 | } |
a7519a3c RH |
3899 | else |
3900 | { | |
3901 | unsigned long indx; | |
3902 | struct alpha_elf_link_hash_entry *h; | |
252b5132 | 3903 | |
a7519a3c RH |
3904 | indx = r_symndx - symtab_hdr->sh_info; |
3905 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
3906 | BFD_ASSERT (h != NULL); | |
252b5132 | 3907 | |
a7519a3c RH |
3908 | while (h->root.root.type == bfd_link_hash_indirect |
3909 | || h->root.root.type == bfd_link_hash_warning) | |
3910 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
252b5132 | 3911 | |
a7519a3c RH |
3912 | /* If the symbol is undefined, we can't do anything with it. */ |
3913 | if (h->root.root.type == bfd_link_hash_undefined) | |
3914 | continue; | |
252b5132 | 3915 | |
a7519a3c RH |
3916 | /* If the symbol isn't defined in the current module, |
3917 | again we can't do anything. */ | |
3918 | if (h->root.root.type == bfd_link_hash_undefweak) | |
3919 | { | |
3920 | info.tsec = bfd_abs_section_ptr; | |
3921 | symval = 0; | |
3922 | } | |
3923 | else if (!h->root.def_regular) | |
3924 | { | |
3925 | /* Except for TLSGD relocs, which can sometimes be | |
3926 | relaxed to GOTTPREL relocs. */ | |
3927 | if (r_type != R_ALPHA_TLSGD) | |
3928 | continue; | |
3929 | info.tsec = bfd_abs_section_ptr; | |
3930 | symval = 0; | |
3931 | } | |
3932 | else | |
3933 | { | |
3934 | info.tsec = h->root.root.u.def.section; | |
3935 | symval = h->root.root.u.def.value; | |
3936 | } | |
252b5132 | 3937 | |
a7519a3c RH |
3938 | info.h = h; |
3939 | info.other = h->root.other; | |
3940 | info.first_gotent = &h->got_entries; | |
3941 | } | |
252b5132 | 3942 | |
a7519a3c RH |
3943 | /* Search for the got entry to be used by this relocation. */ |
3944 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) | |
3945 | if (gotent->gotobj == info.gotobj | |
3946 | && gotent->reloc_type == r_type | |
3947 | && gotent->addend == irel->r_addend) | |
3948 | break; | |
3949 | info.gotent = gotent; | |
252b5132 | 3950 | |
a7519a3c RH |
3951 | symval += info.tsec->output_section->vma + info.tsec->output_offset; |
3952 | symval += irel->r_addend; | |
252b5132 | 3953 | |
a7519a3c | 3954 | switch (r_type) |
252b5132 | 3955 | { |
a7519a3c RH |
3956 | case R_ALPHA_LITERAL: |
3957 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 3958 | |
a7519a3c RH |
3959 | /* If there exist LITUSE relocations immediately following, this |
3960 | opens up all sorts of interesting optimizations, because we | |
3961 | now know every location that this address load is used. */ | |
3962 | if (irel+1 < irelend | |
3963 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
252b5132 | 3964 | { |
a7519a3c RH |
3965 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) |
3966 | goto error_return; | |
252b5132 | 3967 | } |
a7519a3c RH |
3968 | else |
3969 | { | |
3970 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3971 | goto error_return; | |
3972 | } | |
3973 | break; | |
252b5132 | 3974 | |
a7519a3c RH |
3975 | case R_ALPHA_GOTDTPREL: |
3976 | case R_ALPHA_GOTTPREL: | |
3977 | BFD_ASSERT(info.gotent != NULL); | |
3978 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
3979 | goto error_return; | |
3980 | break; | |
3981 | ||
3982 | case R_ALPHA_TLSGD: | |
3983 | case R_ALPHA_TLSLDM: | |
3984 | BFD_ASSERT(info.gotent != NULL); | |
3985 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
3986 | r_type == R_ALPHA_TLSGD)) | |
3987 | goto error_return; | |
3988 | break; | |
252b5132 RH |
3989 | } |
3990 | } | |
3991 | ||
a7519a3c RH |
3992 | if (isymbuf != NULL |
3993 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3994 | { | |
3995 | if (!link_info->keep_memory) | |
3996 | free (isymbuf); | |
3997 | else | |
252b5132 | 3998 | { |
a7519a3c RH |
3999 | /* Cache the symbols for elf_link_input_bfd. */ |
4000 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 4001 | } |
a7519a3c | 4002 | } |
252b5132 | 4003 | |
a7519a3c RH |
4004 | if (info.contents != NULL |
4005 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
4006 | { | |
4007 | if (!info.changed_contents && !link_info->keep_memory) | |
4008 | free (info.contents); | |
4009 | else | |
252b5132 | 4010 | { |
a7519a3c RH |
4011 | /* Cache the section contents for elf_link_input_bfd. */ |
4012 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
252b5132 | 4013 | } |
a7519a3c | 4014 | } |
252b5132 | 4015 | |
a7519a3c RH |
4016 | if (elf_section_data (sec)->relocs != internal_relocs) |
4017 | { | |
4018 | if (!info.changed_relocs) | |
4019 | free (internal_relocs); | |
4020 | else | |
4021 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 4022 | } |
a7519a3c RH |
4023 | |
4024 | *again = info.changed_contents || info.changed_relocs; | |
252b5132 | 4025 | |
b34976b6 | 4026 | return TRUE; |
252b5132 | 4027 | |
a7519a3c RH |
4028 | error_return: |
4029 | if (isymbuf != NULL | |
4030 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
4031 | free (isymbuf); | |
4032 | if (info.contents != NULL | |
4033 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
4034 | free (info.contents); | |
4035 | if (internal_relocs != NULL | |
4036 | && elf_section_data (sec)->relocs != internal_relocs) | |
4037 | free (internal_relocs); | |
4038 | return FALSE; | |
4039 | } | |
4040 | \f | |
1bbc9cec RH |
4041 | /* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) |
4042 | into the next available slot in SREL. */ | |
4043 | ||
4044 | static void | |
a7519a3c RH |
4045 | elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info, |
4046 | asection *sec, asection *srel, bfd_vma offset, | |
4047 | long dynindx, long rtype, bfd_vma addend) | |
1bbc9cec RH |
4048 | { |
4049 | Elf_Internal_Rela outrel; | |
4050 | bfd_byte *loc; | |
4051 | ||
4052 | BFD_ASSERT (srel != NULL); | |
4053 | ||
4054 | outrel.r_info = ELF64_R_INFO (dynindx, rtype); | |
4055 | outrel.r_addend = addend; | |
4056 | ||
4057 | offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
4058 | if ((offset | 1) != (bfd_vma) -1) | |
4059 | outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; | |
4060 | else | |
4061 | memset (&outrel, 0, sizeof (outrel)); | |
4062 | ||
4063 | loc = srel->contents; | |
4064 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
4065 | bfd_elf64_swap_reloca_out (abfd, &outrel, loc); | |
eea6121a | 4066 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size); |
1bbc9cec RH |
4067 | } |
4068 | ||
4a67a098 RH |
4069 | /* Relocate an Alpha ELF section for a relocatable link. |
4070 | ||
4071 | We don't have to change anything unless the reloc is against a section | |
4072 | symbol, in which case we have to adjust according to where the section | |
4073 | symbol winds up in the output section. */ | |
4074 | ||
b34976b6 | 4075 | static bfd_boolean |
a7519a3c RH |
4076 | elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED, |
4077 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4078 | bfd *input_bfd, asection *input_section, | |
4079 | bfd_byte *contents ATTRIBUTE_UNUSED, | |
4080 | Elf_Internal_Rela *relocs, | |
4081 | Elf_Internal_Sym *local_syms, | |
4082 | asection **local_sections) | |
4a67a098 RH |
4083 | { |
4084 | unsigned long symtab_hdr_sh_info; | |
4085 | Elf_Internal_Rela *rel; | |
4086 | Elf_Internal_Rela *relend; | |
ab96bf03 | 4087 | struct elf_link_hash_entry **sym_hashes; |
b34976b6 | 4088 | bfd_boolean ret_val = TRUE; |
4a67a098 | 4089 | |
0ffa91dd | 4090 | symtab_hdr_sh_info = elf_symtab_hdr (input_bfd).sh_info; |
ab96bf03 | 4091 | sym_hashes = elf_sym_hashes (input_bfd); |
4a67a098 RH |
4092 | |
4093 | relend = relocs + input_section->reloc_count; | |
4094 | for (rel = relocs; rel < relend; rel++) | |
4095 | { | |
4096 | unsigned long r_symndx; | |
4097 | Elf_Internal_Sym *sym; | |
4098 | asection *sec; | |
4099 | unsigned long r_type; | |
4100 | ||
ab96bf03 | 4101 | r_type = ELF64_R_TYPE (rel->r_info); |
4a67a098 RH |
4102 | if (r_type >= R_ALPHA_max) |
4103 | { | |
4eca0228 | 4104 | _bfd_error_handler |
695344c0 | 4105 | /* xgettext:c-format */ |
0aa13fee | 4106 | (_("%pB: unsupported relocation type %#x"), |
d003868e | 4107 | input_bfd, (int) r_type); |
4a67a098 | 4108 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4109 | ret_val = FALSE; |
4a67a098 RH |
4110 | continue; |
4111 | } | |
4112 | ||
4a67a098 RH |
4113 | /* The symbol associated with GPDISP and LITUSE is |
4114 | immaterial. Only the addend is significant. */ | |
4115 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
4116 | continue; | |
4117 | ||
ab96bf03 | 4118 | r_symndx = ELF64_R_SYM (rel->r_info); |
4a67a098 RH |
4119 | if (r_symndx < symtab_hdr_sh_info) |
4120 | { | |
4121 | sym = local_syms + r_symndx; | |
ab96bf03 | 4122 | sec = local_sections[r_symndx]; |
4a67a098 | 4123 | } |
ab96bf03 AM |
4124 | else |
4125 | { | |
4126 | struct elf_link_hash_entry *h; | |
4127 | ||
4128 | h = sym_hashes[r_symndx - symtab_hdr_sh_info]; | |
4129 | ||
4130 | while (h->root.type == bfd_link_hash_indirect | |
4131 | || h->root.type == bfd_link_hash_warning) | |
4132 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4133 | ||
4134 | if (h->root.type != bfd_link_hash_defined | |
4135 | && h->root.type != bfd_link_hash_defweak) | |
4136 | continue; | |
4137 | ||
4138 | sym = NULL; | |
4139 | sec = h->root.u.def.section; | |
4140 | } | |
4141 | ||
dbaa2011 | 4142 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 4143 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b MR |
4144 | rel, 1, relend, |
4145 | elf64_alpha_howto_table + r_type, 0, | |
e4067dbb | 4146 | contents); |
ab96bf03 AM |
4147 | |
4148 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4149 | rel->r_addend += sec->output_offset; | |
4a67a098 RH |
4150 | } |
4151 | ||
4152 | return ret_val; | |
4153 | } | |
4154 | ||
252b5132 RH |
4155 | /* Relocate an Alpha ELF section. */ |
4156 | ||
b34976b6 | 4157 | static bfd_boolean |
a7519a3c RH |
4158 | elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
4159 | bfd *input_bfd, asection *input_section, | |
4160 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
4161 | Elf_Internal_Sym *local_syms, | |
4162 | asection **local_sections) | |
252b5132 | 4163 | { |
4a67a098 | 4164 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
4165 | Elf_Internal_Rela *rel; |
4166 | Elf_Internal_Rela *relend; | |
4a67a098 RH |
4167 | asection *sgot, *srel, *srelgot; |
4168 | bfd *dynobj, *gotobj; | |
4169 | bfd_vma gp, tp_base, dtp_base; | |
4170 | struct alpha_elf_got_entry **local_got_entries; | |
b34976b6 | 4171 | bfd_boolean ret_val; |
252b5132 | 4172 | |
0ffa91dd | 4173 | BFD_ASSERT (is_alpha_elf (input_bfd)); |
68ffbac6 | 4174 | |
4a67a098 | 4175 | /* Handle relocatable links with a smaller loop. */ |
0e1862bb | 4176 | if (bfd_link_relocatable (info)) |
4a67a098 RH |
4177 | return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, |
4178 | input_section, contents, relocs, | |
4179 | local_syms, local_sections); | |
4180 | ||
4181 | /* This is a final link. */ | |
4182 | ||
b34976b6 | 4183 | ret_val = TRUE; |
252b5132 | 4184 | |
0ffa91dd | 4185 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
3765b1be | 4186 | |
4a67a098 | 4187 | dynobj = elf_hash_table (info)->dynobj; |
ce558b89 | 4188 | srelgot = elf_hash_table (info)->srelgot; |
4a67a098 | 4189 | |
3241278a RH |
4190 | if (input_section->flags & SEC_ALLOC) |
4191 | { | |
4192 | const char *section_name; | |
4193 | section_name = (bfd_elf_string_from_elf_section | |
4194 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
d4730f92 | 4195 | _bfd_elf_single_rel_hdr (input_section)->sh_name)); |
3241278a | 4196 | BFD_ASSERT(section_name != NULL); |
3d4d4302 | 4197 | srel = bfd_get_linker_section (dynobj, section_name); |
3241278a RH |
4198 | } |
4199 | else | |
4200 | srel = NULL; | |
3765b1be | 4201 | |
4a67a098 RH |
4202 | /* Find the gp value for this input bfd. */ |
4203 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
4204 | if (gotobj) | |
4205 | { | |
4206 | sgot = alpha_elf_tdata (gotobj)->got; | |
4207 | gp = _bfd_get_gp_value (gotobj); | |
4208 | if (gp == 0) | |
252b5132 | 4209 | { |
4a67a098 RH |
4210 | gp = (sgot->output_section->vma |
4211 | + sgot->output_offset | |
4212 | + 0x8000); | |
4213 | _bfd_set_gp_value (gotobj, gp); | |
4214 | } | |
4215 | } | |
4216 | else | |
4217 | { | |
4218 | sgot = NULL; | |
4219 | gp = 0; | |
4220 | } | |
3765b1be | 4221 | |
4a67a098 RH |
4222 | local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; |
4223 | ||
e1918d23 | 4224 | if (elf_hash_table (info)->tls_sec != NULL) |
4a67a098 | 4225 | { |
e1918d23 AM |
4226 | dtp_base = alpha_get_dtprel_base (info); |
4227 | tp_base = alpha_get_tprel_base (info); | |
252b5132 | 4228 | } |
4a67a098 RH |
4229 | else |
4230 | dtp_base = tp_base = 0; | |
252b5132 | 4231 | |
252b5132 | 4232 | relend = relocs + input_section->reloc_count; |
4a67a098 | 4233 | for (rel = relocs; rel < relend; rel++) |
252b5132 | 4234 | { |
4a67a098 | 4235 | struct alpha_elf_link_hash_entry *h = NULL; |
3765b1be RH |
4236 | struct alpha_elf_got_entry *gotent; |
4237 | bfd_reloc_status_type r; | |
252b5132 RH |
4238 | reloc_howto_type *howto; |
4239 | unsigned long r_symndx; | |
4a67a098 RH |
4240 | Elf_Internal_Sym *sym = NULL; |
4241 | asection *sec = NULL; | |
3765b1be | 4242 | bfd_vma value; |
dc810e39 | 4243 | bfd_vma addend; |
b34976b6 | 4244 | bfd_boolean dynamic_symbol_p; |
1d5316ab | 4245 | bfd_boolean unresolved_reloc = FALSE; |
b34976b6 | 4246 | bfd_boolean undef_weak_ref = FALSE; |
3765b1be | 4247 | unsigned long r_type; |
252b5132 RH |
4248 | |
4249 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4250 | if (r_type >= R_ALPHA_max) |
252b5132 | 4251 | { |
4eca0228 | 4252 | _bfd_error_handler |
695344c0 | 4253 | /* xgettext:c-format */ |
0aa13fee | 4254 | (_("%pB: unsupported relocation type %#x"), |
d003868e | 4255 | input_bfd, (int) r_type); |
252b5132 | 4256 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4257 | ret_val = FALSE; |
3765b1be | 4258 | continue; |
252b5132 | 4259 | } |
252b5132 | 4260 | |
3765b1be | 4261 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4262 | r_symndx = ELF64_R_SYM(rel->r_info); |
4263 | ||
cc03ec80 | 4264 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
cf35638d | 4265 | reloc to the STN_UNDEF (0) symbol so that they all match. */ |
cc03ec80 | 4266 | if (r_type == R_ALPHA_TLSLDM) |
cf35638d | 4267 | r_symndx = STN_UNDEF; |
cc03ec80 | 4268 | |
252b5132 RH |
4269 | if (r_symndx < symtab_hdr->sh_info) |
4270 | { | |
8517fae7 | 4271 | asection *msec; |
252b5132 RH |
4272 | sym = local_syms + r_symndx; |
4273 | sec = local_sections[r_symndx]; | |
8517fae7 AM |
4274 | msec = sec; |
4275 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3765b1be | 4276 | |
cf35638d | 4277 | /* If this is a tp-relative relocation against sym STN_UNDEF (0), |
cc03ec80 | 4278 | this is hackery from relax_section. Force the value to |
f915360b | 4279 | be the tls module base. */ |
cf35638d | 4280 | if (r_symndx == STN_UNDEF |
cc03ec80 RH |
4281 | && (r_type == R_ALPHA_TLSLDM |
4282 | || r_type == R_ALPHA_GOTTPREL | |
4283 | || r_type == R_ALPHA_TPREL64 | |
4284 | || r_type == R_ALPHA_TPRELHI | |
4285 | || r_type == R_ALPHA_TPRELLO | |
4286 | || r_type == R_ALPHA_TPREL16)) | |
f915360b | 4287 | value = dtp_base; |
cc03ec80 | 4288 | |
4a67a098 RH |
4289 | if (local_got_entries) |
4290 | gotent = local_got_entries[r_symndx]; | |
4291 | else | |
4292 | gotent = NULL; | |
3765b1be RH |
4293 | |
4294 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4295 | unless it has been done already. */ | |
4296 | if ((sec->flags & SEC_MERGE) | |
048d873d | 4297 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
dbaa2011 | 4298 | && sec->sec_info_type == SEC_INFO_TYPE_MERGE |
048d873d RH |
4299 | && gotent |
4300 | && !gotent->reloc_xlated) | |
3765b1be RH |
4301 | { |
4302 | struct alpha_elf_got_entry *ent; | |
3765b1be RH |
4303 | |
4304 | for (ent = gotent; ent; ent = ent->next) | |
4305 | { | |
4306 | ent->reloc_xlated = 1; | |
4307 | if (ent->use_count == 0) | |
4308 | continue; | |
4309 | msec = sec; | |
4310 | ent->addend = | |
4311 | _bfd_merged_section_offset (output_bfd, &msec, | |
4312 | elf_section_data (sec)-> | |
4313 | sec_info, | |
753731ee | 4314 | sym->st_value + ent->addend); |
3765b1be RH |
4315 | ent->addend -= sym->st_value; |
4316 | ent->addend += msec->output_section->vma | |
4317 | + msec->output_offset | |
4318 | - sec->output_section->vma | |
4319 | - sec->output_offset; | |
4320 | } | |
4321 | } | |
4322 | ||
b34976b6 | 4323 | dynamic_symbol_p = FALSE; |
252b5132 RH |
4324 | } |
4325 | else | |
4326 | { | |
62d887d4 | 4327 | bfd_boolean warned, ignored; |
560e09e9 | 4328 | struct elf_link_hash_entry *hh; |
b2a8e766 AM |
4329 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
4330 | ||
4331 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4332 | r_symndx, symtab_hdr, sym_hashes, | |
4333 | hh, sec, value, | |
62d887d4 | 4334 | unresolved_reloc, warned, ignored); |
560e09e9 NC |
4335 | |
4336 | if (warned) | |
4337 | continue; | |
252b5132 | 4338 | |
560e09e9 NC |
4339 | if (value == 0 |
4340 | && ! unresolved_reloc | |
4341 | && hh->root.type == bfd_link_hash_undefweak) | |
b34976b6 | 4342 | undef_weak_ref = TRUE; |
3765b1be | 4343 | |
560e09e9 | 4344 | h = (struct alpha_elf_link_hash_entry *) hh; |
07d6d2b8 | 4345 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); |
3765b1be | 4346 | gotent = h->got_entries; |
252b5132 | 4347 | } |
3765b1be | 4348 | |
dbaa2011 | 4349 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 4350 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 4351 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 4352 | |
252b5132 | 4353 | addend = rel->r_addend; |
3765b1be RH |
4354 | value += addend; |
4355 | ||
4356 | /* Search for the proper got entry. */ | |
4357 | for (; gotent ; gotent = gotent->next) | |
4358 | if (gotent->gotobj == gotobj | |
4359 | && gotent->reloc_type == r_type | |
4360 | && gotent->addend == addend) | |
4361 | break; | |
252b5132 RH |
4362 | |
4363 | switch (r_type) | |
4364 | { | |
4365 | case R_ALPHA_GPDISP: | |
4366 | { | |
4367 | bfd_byte *p_ldah, *p_lda; | |
4368 | ||
4369 | BFD_ASSERT(gp != 0); | |
4370 | ||
3765b1be RH |
4371 | value = (input_section->output_section->vma |
4372 | + input_section->output_offset | |
4373 | + rel->r_offset); | |
252b5132 | 4374 | |
3765b1be | 4375 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4376 | p_lda = p_ldah + rel->r_addend; |
4377 | ||
3765b1be | 4378 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4379 | p_ldah, p_lda); |
4380 | } | |
4381 | break; | |
4382 | ||
252b5132 | 4383 | case R_ALPHA_LITERAL: |
3765b1be RH |
4384 | BFD_ASSERT(sgot != NULL); |
4385 | BFD_ASSERT(gp != 0); | |
4386 | BFD_ASSERT(gotent != NULL); | |
4387 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4388 | |
3765b1be RH |
4389 | if (!gotent->reloc_done) |
4390 | { | |
4391 | gotent->reloc_done = 1; | |
252b5132 | 4392 | |
3765b1be RH |
4393 | bfd_put_64 (output_bfd, value, |
4394 | sgot->contents + gotent->got_offset); | |
252b5132 | 4395 | |
3765b1be RH |
4396 | /* If the symbol has been forced local, output a |
4397 | RELATIVE reloc, otherwise it will be handled in | |
4398 | finish_dynamic_symbol. */ | |
0e1862bb L |
4399 | if (bfd_link_pic (info) |
4400 | && !dynamic_symbol_p | |
4401 | && !undef_weak_ref) | |
1bbc9cec RH |
4402 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4403 | gotent->got_offset, 0, | |
4404 | R_ALPHA_RELATIVE, value); | |
3765b1be | 4405 | } |
252b5132 | 4406 | |
3765b1be RH |
4407 | value = (sgot->output_section->vma |
4408 | + sgot->output_offset | |
4409 | + gotent->got_offset); | |
4410 | value -= gp; | |
252b5132 RH |
4411 | goto default_reloc; |
4412 | ||
4413 | case R_ALPHA_GPREL32: | |
ec1659c8 | 4414 | case R_ALPHA_GPREL16: |
252b5132 | 4415 | case R_ALPHA_GPRELLOW: |
3765b1be | 4416 | if (dynamic_symbol_p) |
07d6d2b8 | 4417 | { |
4eca0228 | 4418 | _bfd_error_handler |
695344c0 | 4419 | /* xgettext:c-format */ |
871b3ab2 | 4420 | (_("%pB: gp-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4421 | input_bfd, h->root.root.root.string); |
4422 | ret_val = FALSE; | |
4423 | } | |
252b5132 | 4424 | BFD_ASSERT(gp != 0); |
3765b1be | 4425 | value -= gp; |
252b5132 RH |
4426 | goto default_reloc; |
4427 | ||
4428 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4429 | if (dynamic_symbol_p) |
07d6d2b8 | 4430 | { |
4eca0228 | 4431 | _bfd_error_handler |
695344c0 | 4432 | /* xgettext:c-format */ |
871b3ab2 | 4433 | (_("%pB: gp-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4434 | input_bfd, h->root.root.root.string); |
4435 | ret_val = FALSE; | |
4436 | } | |
252b5132 | 4437 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4438 | value -= gp; |
4439 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4440 | goto default_reloc; |
4441 | ||
252b5132 | 4442 | case R_ALPHA_HINT: |
f94952df RH |
4443 | /* A call to a dynamic symbol is definitely out of range of |
4444 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4445 | if (dynamic_symbol_p) |
f94952df RH |
4446 | { |
4447 | r = bfd_reloc_ok; | |
4448 | break; | |
4449 | } | |
3765b1be RH |
4450 | /* The regular PC-relative stuff measures from the start of |
4451 | the instruction rather than the end. */ | |
4452 | value -= 4; | |
4453 | goto default_reloc; | |
f94952df RH |
4454 | |
4455 | case R_ALPHA_BRADDR: | |
3765b1be | 4456 | if (dynamic_symbol_p) |
07d6d2b8 | 4457 | { |
4eca0228 | 4458 | _bfd_error_handler |
695344c0 | 4459 | /* xgettext:c-format */ |
871b3ab2 | 4460 | (_("%pB: pc-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4461 | input_bfd, h->root.root.root.string); |
4462 | ret_val = FALSE; | |
4463 | } | |
252b5132 RH |
4464 | /* The regular PC-relative stuff measures from the start of |
4465 | the instruction rather than the end. */ | |
3765b1be | 4466 | value -= 4; |
252b5132 RH |
4467 | goto default_reloc; |
4468 | ||
7793f4d0 RH |
4469 | case R_ALPHA_BRSGP: |
4470 | { | |
4471 | int other; | |
4472 | const char *name; | |
4473 | ||
4474 | /* The regular PC-relative stuff measures from the start of | |
4475 | the instruction rather than the end. */ | |
3765b1be | 4476 | value -= 4; |
7793f4d0 | 4477 | |
ccf00ab6 RH |
4478 | /* The source and destination gp must be the same. Note that |
4479 | the source will always have an assigned gp, since we forced | |
4480 | one in check_relocs, but that the destination may not, as | |
cedb70c5 | 4481 | it might not have had any relocations at all. Also take |
ccf00ab6 RH |
4482 | care not to crash if H is an undefined symbol. */ |
4483 | if (h != NULL && sec != NULL | |
4484 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4485 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4486 | { | |
4eca0228 | 4487 | _bfd_error_handler |
695344c0 | 4488 | /* xgettext:c-format */ |
871b3ab2 | 4489 | (_("%pB: change in gp: BRSGP %s"), |
d003868e | 4490 | input_bfd, h->root.root.root.string); |
b34976b6 | 4491 | ret_val = FALSE; |
7793f4d0 RH |
4492 | } |
4493 | ||
4494 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4495 | if (h != NULL) | |
4496 | other = h->root.other; | |
4497 | else | |
4498 | other = sym->st_other; | |
4499 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4500 | { | |
4501 | case STO_ALPHA_NOPV: | |
07d6d2b8 | 4502 | break; |
7793f4d0 | 4503 | case STO_ALPHA_STD_GPLOAD: |
64e04ecd | 4504 | value += 8; |
7793f4d0 RH |
4505 | break; |
4506 | default: | |
4507 | if (h != NULL) | |
4508 | name = h->root.root.root.string; | |
4509 | else | |
4510 | { | |
4511 | name = (bfd_elf_string_from_elf_section | |
4512 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4513 | if (name == NULL) | |
4514 | name = _("<unknown>"); | |
4515 | else if (name[0] == 0) | |
fd361982 | 4516 | name = bfd_section_name (sec); |
7793f4d0 | 4517 | } |
4eca0228 | 4518 | _bfd_error_handler |
695344c0 | 4519 | /* xgettext:c-format */ |
871b3ab2 | 4520 | (_("%pB: !samegp reloc against symbol without .prologue: %s"), |
d003868e | 4521 | input_bfd, name); |
b34976b6 | 4522 | ret_val = FALSE; |
7793f4d0 RH |
4523 | break; |
4524 | } | |
4525 | ||
4526 | goto default_reloc; | |
4527 | } | |
4528 | ||
252b5132 RH |
4529 | case R_ALPHA_REFLONG: |
4530 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4531 | case R_ALPHA_DTPREL64: |
4532 | case R_ALPHA_TPREL64: | |
252b5132 | 4533 | { |
1bbc9cec RH |
4534 | long dynindx, dyntype = r_type; |
4535 | bfd_vma dynaddend; | |
252b5132 RH |
4536 | |
4537 | /* Careful here to remember RELATIVE relocations for global | |
4538 | variables for symbolic shared objects. */ | |
4539 | ||
3765b1be | 4540 | if (dynamic_symbol_p) |
252b5132 RH |
4541 | { |
4542 | BFD_ASSERT(h->root.dynindx != -1); | |
1bbc9cec RH |
4543 | dynindx = h->root.dynindx; |
4544 | dynaddend = addend; | |
3765b1be RH |
4545 | addend = 0, value = 0; |
4546 | } | |
4547 | else if (r_type == R_ALPHA_DTPREL64) | |
4548 | { | |
e1918d23 | 4549 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4550 | value -= dtp_base; |
4551 | goto default_reloc; | |
4552 | } | |
4553 | else if (r_type == R_ALPHA_TPREL64) | |
4554 | { | |
e1918d23 | 4555 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3cbc1e5e | 4556 | if (!bfd_link_dll (info)) |
1bbc9cec RH |
4557 | { |
4558 | value -= tp_base; | |
4559 | goto default_reloc; | |
4560 | } | |
4561 | dynindx = 0; | |
4562 | dynaddend = value - dtp_base; | |
252b5132 | 4563 | } |
0e1862bb | 4564 | else if (bfd_link_pic (info) |
cf35638d | 4565 | && r_symndx != STN_UNDEF |
d6ad34f6 | 4566 | && (input_section->flags & SEC_ALLOC) |
1d5316ab AM |
4567 | && !undef_weak_ref |
4568 | && !(unresolved_reloc | |
4569 | && (_bfd_elf_section_offset (output_bfd, info, | |
4570 | input_section, | |
4571 | rel->r_offset) | |
4572 | == (bfd_vma) -1))) | |
252b5132 | 4573 | { |
3765b1be RH |
4574 | if (r_type == R_ALPHA_REFLONG) |
4575 | { | |
4eca0228 | 4576 | _bfd_error_handler |
695344c0 | 4577 | /* xgettext:c-format */ |
871b3ab2 | 4578 | (_("%pB: unhandled dynamic relocation against %s"), |
d003868e | 4579 | input_bfd, |
3765b1be | 4580 | h->root.root.root.string); |
b34976b6 | 4581 | ret_val = FALSE; |
3765b1be | 4582 | } |
1bbc9cec RH |
4583 | dynindx = 0; |
4584 | dyntype = R_ALPHA_RELATIVE; | |
4585 | dynaddend = value; | |
252b5132 RH |
4586 | } |
4587 | else | |
4588 | goto default_reloc; | |
4589 | ||
3241278a RH |
4590 | if (input_section->flags & SEC_ALLOC) |
4591 | elf64_alpha_emit_dynrel (output_bfd, info, input_section, | |
4592 | srel, rel->r_offset, dynindx, | |
4593 | dyntype, dynaddend); | |
252b5132 RH |
4594 | } |
4595 | goto default_reloc; | |
4596 | ||
3765b1be | 4597 | case R_ALPHA_SREL16: |
84de6048 RH |
4598 | case R_ALPHA_SREL32: |
4599 | case R_ALPHA_SREL64: | |
3765b1be | 4600 | if (dynamic_symbol_p) |
07d6d2b8 | 4601 | { |
4eca0228 | 4602 | _bfd_error_handler |
695344c0 | 4603 | /* xgettext:c-format */ |
871b3ab2 | 4604 | (_("%pB: pc-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4605 | input_bfd, h->root.root.root.string); |
4606 | ret_val = FALSE; | |
4607 | } | |
3cbc1e5e | 4608 | else if (bfd_link_pic (info) |
0e1862bb | 4609 | && undef_weak_ref) |
07d6d2b8 | 4610 | { |
4eca0228 | 4611 | _bfd_error_handler |
695344c0 | 4612 | /* xgettext:c-format */ |
871b3ab2 | 4613 | (_("%pB: pc-relative relocation against undefined weak symbol %s"), |
07d6d2b8 AM |
4614 | input_bfd, h->root.root.root.string); |
4615 | ret_val = FALSE; | |
4616 | } | |
d6ad34f6 | 4617 | |
3765b1be | 4618 | |
84de6048 RH |
4619 | /* ??? .eh_frame references to discarded sections will be smashed |
4620 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4621 | NULL to be encoded as 0 in any format, so this works here. */ | |
1d5316ab AM |
4622 | if (r_symndx == STN_UNDEF |
4623 | || (unresolved_reloc | |
4624 | && _bfd_elf_section_offset (output_bfd, info, | |
4625 | input_section, | |
4626 | rel->r_offset) == (bfd_vma) -1)) | |
84de6048 RH |
4627 | howto = (elf64_alpha_howto_table |
4628 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4629 | goto default_reloc; | |
4630 | ||
3765b1be RH |
4631 | case R_ALPHA_TLSLDM: |
4632 | /* Ignore the symbol for the relocation. The result is always | |
4633 | the current module. */ | |
4634 | dynamic_symbol_p = 0; | |
4635 | /* FALLTHRU */ | |
4636 | ||
4637 | case R_ALPHA_TLSGD: | |
4638 | if (!gotent->reloc_done) | |
4639 | { | |
4640 | gotent->reloc_done = 1; | |
4641 | ||
4642 | /* Note that the module index for the main program is 1. */ | |
0e1862bb L |
4643 | bfd_put_64 (output_bfd, |
4644 | !bfd_link_pic (info) && !dynamic_symbol_p, | |
3765b1be RH |
4645 | sgot->contents + gotent->got_offset); |
4646 | ||
4647 | /* If the symbol has been forced local, output a | |
4648 | DTPMOD64 reloc, otherwise it will be handled in | |
4649 | finish_dynamic_symbol. */ | |
0e1862bb | 4650 | if (bfd_link_pic (info) && !dynamic_symbol_p) |
1bbc9cec RH |
4651 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4652 | gotent->got_offset, 0, | |
4653 | R_ALPHA_DTPMOD64, 0); | |
3765b1be RH |
4654 | |
4655 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4656 | value = 0; | |
4657 | else | |
4658 | { | |
e1918d23 | 4659 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
07d6d2b8 | 4660 | value -= dtp_base; |
3765b1be RH |
4661 | } |
4662 | bfd_put_64 (output_bfd, value, | |
4663 | sgot->contents + gotent->got_offset + 8); | |
4664 | } | |
4665 | ||
4666 | value = (sgot->output_section->vma | |
4667 | + sgot->output_offset | |
4668 | + gotent->got_offset); | |
4669 | value -= gp; | |
4670 | goto default_reloc; | |
4671 | ||
4672 | case R_ALPHA_DTPRELHI: | |
4673 | case R_ALPHA_DTPRELLO: | |
4674 | case R_ALPHA_DTPREL16: | |
4675 | if (dynamic_symbol_p) | |
07d6d2b8 | 4676 | { |
4eca0228 | 4677 | _bfd_error_handler |
695344c0 | 4678 | /* xgettext:c-format */ |
871b3ab2 | 4679 | (_("%pB: dtp-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4680 | input_bfd, h->root.root.root.string); |
4681 | ret_val = FALSE; | |
4682 | } | |
e1918d23 | 4683 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4684 | value -= dtp_base; |
9e756d64 RH |
4685 | if (r_type == R_ALPHA_DTPRELHI) |
4686 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4687 | goto default_reloc; |
4688 | ||
4689 | case R_ALPHA_TPRELHI: | |
4690 | case R_ALPHA_TPRELLO: | |
4691 | case R_ALPHA_TPREL16: | |
3cbc1e5e | 4692 | if (bfd_link_dll (info)) |
9e756d64 | 4693 | { |
4eca0228 | 4694 | _bfd_error_handler |
695344c0 | 4695 | /* xgettext:c-format */ |
871b3ab2 | 4696 | (_("%pB: TLS local exec code cannot be linked into shared objects"), |
d003868e | 4697 | input_bfd); |
07d6d2b8 | 4698 | ret_val = FALSE; |
9e756d64 RH |
4699 | } |
4700 | else if (dynamic_symbol_p) | |
07d6d2b8 | 4701 | { |
4eca0228 | 4702 | _bfd_error_handler |
695344c0 | 4703 | /* xgettext:c-format */ |
871b3ab2 | 4704 | (_("%pB: tp-relative relocation against dynamic symbol %s"), |
07d6d2b8 AM |
4705 | input_bfd, h->root.root.root.string); |
4706 | ret_val = FALSE; | |
4707 | } | |
e1918d23 | 4708 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4709 | value -= tp_base; |
9e756d64 RH |
4710 | if (r_type == R_ALPHA_TPRELHI) |
4711 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4712 | goto default_reloc; |
4713 | ||
4714 | case R_ALPHA_GOTDTPREL: | |
4715 | case R_ALPHA_GOTTPREL: | |
4716 | BFD_ASSERT(sgot != NULL); | |
4717 | BFD_ASSERT(gp != 0); | |
4718 | BFD_ASSERT(gotent != NULL); | |
4719 | BFD_ASSERT(gotent->use_count >= 1); | |
4720 | ||
4721 | if (!gotent->reloc_done) | |
4722 | { | |
4723 | gotent->reloc_done = 1; | |
4724 | ||
4725 | if (dynamic_symbol_p) | |
4726 | value = 0; | |
4727 | else | |
4728 | { | |
e1918d23 | 4729 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4730 | if (r_type == R_ALPHA_GOTDTPREL) |
4731 | value -= dtp_base; | |
28fbeab8 | 4732 | else if (bfd_link_executable (info)) |
1bbc9cec RH |
4733 | value -= tp_base; |
4734 | else | |
4735 | { | |
4736 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, | |
4737 | gotent->got_offset, 0, | |
4738 | R_ALPHA_TPREL64, | |
4739 | value - dtp_base); | |
4740 | value = 0; | |
4741 | } | |
3765b1be RH |
4742 | } |
4743 | bfd_put_64 (output_bfd, value, | |
4744 | sgot->contents + gotent->got_offset); | |
4745 | } | |
4746 | ||
4747 | value = (sgot->output_section->vma | |
4748 | + sgot->output_offset | |
4749 | + gotent->got_offset); | |
4750 | value -= gp; | |
4751 | goto default_reloc; | |
4752 | ||
252b5132 RH |
4753 | default: |
4754 | default_reloc: | |
4755 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4756 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4757 | break; |
4758 | } | |
4759 | ||
4760 | switch (r) | |
4761 | { | |
4762 | case bfd_reloc_ok: | |
4763 | break; | |
4764 | ||
4765 | case bfd_reloc_overflow: | |
4766 | { | |
4767 | const char *name; | |
4768 | ||
ed4de5e2 JJ |
4769 | /* Don't warn if the overflow is due to pc relative reloc |
4770 | against discarded section. Section optimization code should | |
4771 | handle it. */ | |
4772 | ||
4773 | if (r_symndx < symtab_hdr->sh_info | |
4774 | && sec != NULL && howto->pc_relative | |
dbaa2011 | 4775 | && discarded_section (sec)) |
ed4de5e2 JJ |
4776 | break; |
4777 | ||
252b5132 | 4778 | if (h != NULL) |
dfeffb9f | 4779 | name = NULL; |
252b5132 RH |
4780 | else |
4781 | { | |
4782 | name = (bfd_elf_string_from_elf_section | |
4783 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4784 | if (name == NULL) | |
b34976b6 | 4785 | return FALSE; |
252b5132 | 4786 | if (*name == '\0') |
fd361982 | 4787 | name = bfd_section_name (sec); |
252b5132 | 4788 | } |
1a72702b AM |
4789 | (*info->callbacks->reloc_overflow) |
4790 | (info, (h ? &h->root.root : NULL), name, howto->name, | |
4791 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
252b5132 RH |
4792 | } |
4793 | break; | |
4794 | ||
4795 | default: | |
4796 | case bfd_reloc_outofrange: | |
4797 | abort (); | |
4798 | } | |
4799 | } | |
4800 | ||
f16fbd61 | 4801 | return ret_val; |
252b5132 RH |
4802 | } |
4803 | ||
4804 | /* Finish up dynamic symbol handling. We set the contents of various | |
4805 | dynamic sections here. */ | |
4806 | ||
b34976b6 | 4807 | static bfd_boolean |
a7519a3c RH |
4808 | elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
4809 | struct elf_link_hash_entry *h, | |
4810 | Elf_Internal_Sym *sym) | |
252b5132 | 4811 | { |
6ec7057a | 4812 | struct alpha_elf_link_hash_entry *ah = (struct alpha_elf_link_hash_entry *)h; |
252b5132 | 4813 | |
6ec7057a | 4814 | if (h->needs_plt) |
252b5132 RH |
4815 | { |
4816 | /* Fill in the .plt entry for this symbol. */ | |
4817 | asection *splt, *sgot, *srel; | |
4818 | Elf_Internal_Rela outrel; | |
947216bf | 4819 | bfd_byte *loc; |
252b5132 RH |
4820 | bfd_vma got_addr, plt_addr; |
4821 | bfd_vma plt_index; | |
4822 | struct alpha_elf_got_entry *gotent; | |
4823 | ||
4824 | BFD_ASSERT (h->dynindx != -1); | |
4825 | ||
ce558b89 | 4826 | splt = elf_hash_table (info)->splt; |
252b5132 | 4827 | BFD_ASSERT (splt != NULL); |
ce558b89 | 4828 | srel = elf_hash_table (info)->srelplt; |
252b5132 | 4829 | BFD_ASSERT (srel != NULL); |
252b5132 | 4830 | |
6ec7057a RH |
4831 | for (gotent = ah->got_entries; gotent ; gotent = gotent->next) |
4832 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
4833 | && gotent->use_count > 0) | |
4834 | { | |
4835 | unsigned int insn; | |
4836 | int disp; | |
252b5132 | 4837 | |
6ec7057a RH |
4838 | sgot = alpha_elf_tdata (gotent->gotobj)->got; |
4839 | BFD_ASSERT (sgot != NULL); | |
252b5132 | 4840 | |
6ec7057a RH |
4841 | BFD_ASSERT (gotent->got_offset != -1); |
4842 | BFD_ASSERT (gotent->plt_offset != -1); | |
252b5132 | 4843 | |
6ec7057a RH |
4844 | got_addr = (sgot->output_section->vma |
4845 | + sgot->output_offset | |
4846 | + gotent->got_offset); | |
4847 | plt_addr = (splt->output_section->vma | |
4848 | + splt->output_offset | |
4849 | + gotent->plt_offset); | |
252b5132 | 4850 | |
6ec7057a | 4851 | plt_index = (gotent->plt_offset-PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; |
252b5132 | 4852 | |
6ec7057a RH |
4853 | /* Fill in the entry in the procedure linkage table. */ |
4854 | if (elf64_alpha_use_secureplt) | |
4855 | { | |
4856 | disp = (PLT_HEADER_SIZE - 4) - (gotent->plt_offset + 4); | |
4857 | insn = INSN_AD (INSN_BR, 31, disp); | |
4858 | bfd_put_32 (output_bfd, insn, | |
4859 | splt->contents + gotent->plt_offset); | |
252b5132 | 4860 | |
6ec7057a RH |
4861 | plt_index = ((gotent->plt_offset - NEW_PLT_HEADER_SIZE) |
4862 | / NEW_PLT_ENTRY_SIZE); | |
4863 | } | |
4864 | else | |
4865 | { | |
4866 | disp = -(gotent->plt_offset + 4); | |
4867 | insn = INSN_AD (INSN_BR, 28, disp); | |
4868 | bfd_put_32 (output_bfd, insn, | |
4869 | splt->contents + gotent->plt_offset); | |
4870 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4871 | splt->contents + gotent->plt_offset + 4); | |
4872 | bfd_put_32 (output_bfd, INSN_UNOP, | |
4873 | splt->contents + gotent->plt_offset + 8); | |
4874 | ||
4875 | plt_index = ((gotent->plt_offset - OLD_PLT_HEADER_SIZE) | |
4876 | / OLD_PLT_ENTRY_SIZE); | |
4877 | } | |
252b5132 | 4878 | |
6ec7057a RH |
4879 | /* Fill in the entry in the .rela.plt section. */ |
4880 | outrel.r_offset = got_addr; | |
4881 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4882 | outrel.r_addend = 0; | |
252b5132 | 4883 | |
6ec7057a RH |
4884 | loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); |
4885 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 4886 | |
6ec7057a RH |
4887 | /* Fill in the entry in the .got. */ |
4888 | bfd_put_64 (output_bfd, plt_addr, | |
4889 | sgot->contents + gotent->got_offset); | |
4890 | } | |
252b5132 RH |
4891 | } |
4892 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
4893 | { | |
4894 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
4895 | asection *srel; | |
252b5132 RH |
4896 | struct alpha_elf_got_entry *gotent; |
4897 | ||
ce558b89 | 4898 | srel = elf_hash_table (info)->srelgot; |
252b5132 RH |
4899 | BFD_ASSERT (srel != NULL); |
4900 | ||
252b5132 RH |
4901 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
4902 | gotent != NULL; | |
4903 | gotent = gotent->next) | |
4904 | { | |
f44f99a5 | 4905 | asection *sgot; |
1bbc9cec | 4906 | long r_type; |
3765b1be | 4907 | |
f44f99a5 RH |
4908 | if (gotent->use_count == 0) |
4909 | continue; | |
4910 | ||
4911 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3765b1be RH |
4912 | |
4913 | r_type = gotent->reloc_type; | |
4914 | switch (r_type) | |
4915 | { | |
4916 | case R_ALPHA_LITERAL: | |
4917 | r_type = R_ALPHA_GLOB_DAT; | |
4918 | break; | |
4919 | case R_ALPHA_TLSGD: | |
4920 | r_type = R_ALPHA_DTPMOD64; | |
4921 | break; | |
4922 | case R_ALPHA_GOTDTPREL: | |
4923 | r_type = R_ALPHA_DTPREL64; | |
4924 | break; | |
4925 | case R_ALPHA_GOTTPREL: | |
4926 | r_type = R_ALPHA_TPREL64; | |
4927 | break; | |
4928 | case R_ALPHA_TLSLDM: | |
4929 | default: | |
4930 | abort (); | |
4931 | } | |
4932 | ||
68ffbac6 | 4933 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
1bbc9cec RH |
4934 | gotent->got_offset, h->dynindx, |
4935 | r_type, gotent->addend); | |
3765b1be RH |
4936 | |
4937 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
68ffbac6 | 4938 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
1bbc9cec RH |
4939 | gotent->got_offset + 8, h->dynindx, |
4940 | R_ALPHA_DTPREL64, gotent->addend); | |
252b5132 RH |
4941 | } |
4942 | } | |
4943 | ||
4944 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 4945 | if (h == elf_hash_table (info)->hdynamic |
22edb2f1 RS |
4946 | || h == elf_hash_table (info)->hgot |
4947 | || h == elf_hash_table (info)->hplt) | |
252b5132 RH |
4948 | sym->st_shndx = SHN_ABS; |
4949 | ||
b34976b6 | 4950 | return TRUE; |
252b5132 RH |
4951 | } |
4952 | ||
4953 | /* Finish up the dynamic sections. */ | |
4954 | ||
b34976b6 | 4955 | static bfd_boolean |
a7519a3c RH |
4956 | elf64_alpha_finish_dynamic_sections (bfd *output_bfd, |
4957 | struct bfd_link_info *info) | |
252b5132 RH |
4958 | { |
4959 | bfd *dynobj; | |
4960 | asection *sdyn; | |
4961 | ||
4962 | dynobj = elf_hash_table (info)->dynobj; | |
3d4d4302 | 4963 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
252b5132 RH |
4964 | |
4965 | if (elf_hash_table (info)->dynamic_sections_created) | |
4966 | { | |
6ec7057a | 4967 | asection *splt, *sgotplt, *srelaplt; |
252b5132 | 4968 | Elf64_External_Dyn *dyncon, *dynconend; |
6ec7057a | 4969 | bfd_vma plt_vma, gotplt_vma; |
252b5132 | 4970 | |
ce558b89 AM |
4971 | splt = elf_hash_table (info)->splt; |
4972 | srelaplt = elf_hash_table (info)->srelplt; | |
252b5132 RH |
4973 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
4974 | ||
6ec7057a RH |
4975 | plt_vma = splt->output_section->vma + splt->output_offset; |
4976 | ||
4977 | gotplt_vma = 0; | |
4978 | if (elf64_alpha_use_secureplt) | |
4979 | { | |
ce558b89 | 4980 | sgotplt = elf_hash_table (info)->sgotplt; |
6ec7057a RH |
4981 | BFD_ASSERT (sgotplt != NULL); |
4982 | if (sgotplt->size > 0) | |
4983 | gotplt_vma = sgotplt->output_section->vma + sgotplt->output_offset; | |
4984 | } | |
4985 | ||
252b5132 | 4986 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
eea6121a | 4987 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4988 | for (; dyncon < dynconend; dyncon++) |
4989 | { | |
4990 | Elf_Internal_Dyn dyn; | |
252b5132 RH |
4991 | |
4992 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
4993 | ||
4994 | switch (dyn.d_tag) | |
4995 | { | |
4996 | case DT_PLTGOT: | |
6ec7057a RH |
4997 | dyn.d_un.d_ptr |
4998 | = elf64_alpha_use_secureplt ? gotplt_vma : plt_vma; | |
4999 | break; | |
252b5132 | 5000 | case DT_PLTRELSZ: |
6ec7057a RH |
5001 | dyn.d_un.d_val = srelaplt ? srelaplt->size : 0; |
5002 | break; | |
252b5132 | 5003 | case DT_JMPREL: |
4ade44b7 AM |
5004 | dyn.d_un.d_ptr = srelaplt ? (srelaplt->output_section->vma |
5005 | + srelaplt->output_offset) : 0; | |
6ec7057a | 5006 | break; |
252b5132 RH |
5007 | } |
5008 | ||
5009 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5010 | } | |
5011 | ||
6ec7057a | 5012 | /* Initialize the plt header. */ |
eea6121a | 5013 | if (splt->size > 0) |
252b5132 | 5014 | { |
6ec7057a RH |
5015 | unsigned int insn; |
5016 | int ofs; | |
5017 | ||
5018 | if (elf64_alpha_use_secureplt) | |
5019 | { | |
5020 | ofs = gotplt_vma - (plt_vma + PLT_HEADER_SIZE); | |
5021 | ||
5022 | insn = INSN_ABC (INSN_SUBQ, 27, 28, 25); | |
5023 | bfd_put_32 (output_bfd, insn, splt->contents); | |
5024 | ||
5025 | insn = INSN_ABO (INSN_LDAH, 28, 28, (ofs + 0x8000) >> 16); | |
5026 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
5027 | ||
5028 | insn = INSN_ABC (INSN_S4SUBQ, 25, 25, 25); | |
5029 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
5030 | ||
5031 | insn = INSN_ABO (INSN_LDA, 28, 28, ofs); | |
5032 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
5033 | ||
5034 | insn = INSN_ABO (INSN_LDQ, 27, 28, 0); | |
5035 | bfd_put_32 (output_bfd, insn, splt->contents + 16); | |
5036 | ||
5037 | insn = INSN_ABC (INSN_ADDQ, 25, 25, 25); | |
5038 | bfd_put_32 (output_bfd, insn, splt->contents + 20); | |
5039 | ||
5040 | insn = INSN_ABO (INSN_LDQ, 28, 28, 8); | |
5041 | bfd_put_32 (output_bfd, insn, splt->contents + 24); | |
5042 | ||
5043 | insn = INSN_AB (INSN_JMP, 31, 27); | |
5044 | bfd_put_32 (output_bfd, insn, splt->contents + 28); | |
5045 | ||
5046 | insn = INSN_AD (INSN_BR, 28, -PLT_HEADER_SIZE); | |
5047 | bfd_put_32 (output_bfd, insn, splt->contents + 32); | |
5048 | } | |
5049 | else | |
5050 | { | |
5051 | insn = INSN_AD (INSN_BR, 27, 0); /* br $27, .+4 */ | |
5052 | bfd_put_32 (output_bfd, insn, splt->contents); | |
5053 | ||
5054 | insn = INSN_ABO (INSN_LDQ, 27, 27, 12); | |
5055 | bfd_put_32 (output_bfd, insn, splt->contents + 4); | |
5056 | ||
5057 | insn = INSN_UNOP; | |
5058 | bfd_put_32 (output_bfd, insn, splt->contents + 8); | |
5059 | ||
5060 | insn = INSN_AB (INSN_JMP, 27, 27); | |
5061 | bfd_put_32 (output_bfd, insn, splt->contents + 12); | |
5062 | ||
5063 | /* The next two words will be filled in by ld.so. */ | |
5064 | bfd_put_64 (output_bfd, 0, splt->contents + 16); | |
5065 | bfd_put_64 (output_bfd, 0, splt->contents + 24); | |
5066 | } | |
252b5132 | 5067 | |
eecdbe52 | 5068 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; |
252b5132 RH |
5069 | } |
5070 | } | |
5071 | ||
b34976b6 | 5072 | return TRUE; |
252b5132 RH |
5073 | } |
5074 | ||
96e2734b RH |
5075 | /* We need to use a special link routine to handle the .mdebug section. |
5076 | We need to merge all instances of these sections together, not write | |
5077 | them all out sequentially. */ | |
252b5132 | 5078 | |
b34976b6 | 5079 | static bfd_boolean |
a7519a3c | 5080 | elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
5081 | { |
5082 | asection *o; | |
5083 | struct bfd_link_order *p; | |
96e2734b | 5084 | asection *mdebug_sec; |
252b5132 RH |
5085 | struct ecoff_debug_info debug; |
5086 | const struct ecoff_debug_swap *swap | |
5087 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
5088 | HDRR *symhdr = &debug.symbolic_header; | |
4dfe6ac6 NC |
5089 | void * mdebug_handle = NULL; |
5090 | struct alpha_elf_link_hash_table * htab; | |
5091 | ||
5092 | htab = alpha_elf_hash_table (info); | |
5093 | if (htab == NULL) | |
5094 | return FALSE; | |
252b5132 | 5095 | |
96e2734b | 5096 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 5097 | mdebug_sec = NULL; |
252b5132 RH |
5098 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
5099 | { | |
252b5132 RH |
5100 | if (strcmp (o->name, ".mdebug") == 0) |
5101 | { | |
5102 | struct extsym_info einfo; | |
5103 | ||
5104 | /* We have found the .mdebug section in the output file. | |
5105 | Look through all the link_orders comprising it and merge | |
5106 | the information together. */ | |
5107 | symhdr->magic = swap->sym_magic; | |
5108 | /* FIXME: What should the version stamp be? */ | |
5109 | symhdr->vstamp = 0; | |
5110 | symhdr->ilineMax = 0; | |
5111 | symhdr->cbLine = 0; | |
5112 | symhdr->idnMax = 0; | |
5113 | symhdr->ipdMax = 0; | |
5114 | symhdr->isymMax = 0; | |
5115 | symhdr->ioptMax = 0; | |
5116 | symhdr->iauxMax = 0; | |
5117 | symhdr->issMax = 0; | |
5118 | symhdr->issExtMax = 0; | |
5119 | symhdr->ifdMax = 0; | |
5120 | symhdr->crfd = 0; | |
5121 | symhdr->iextMax = 0; | |
5122 | ||
5123 | /* We accumulate the debugging information itself in the | |
5124 | debug_info structure. */ | |
5125 | debug.line = NULL; | |
5126 | debug.external_dnr = NULL; | |
5127 | debug.external_pdr = NULL; | |
5128 | debug.external_sym = NULL; | |
5129 | debug.external_opt = NULL; | |
5130 | debug.external_aux = NULL; | |
5131 | debug.ss = NULL; | |
5132 | debug.ssext = debug.ssext_end = NULL; | |
5133 | debug.external_fdr = NULL; | |
5134 | debug.external_rfd = NULL; | |
5135 | debug.external_ext = debug.external_ext_end = NULL; | |
5136 | ||
5137 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
2c3fc389 | 5138 | if (mdebug_handle == NULL) |
b34976b6 | 5139 | return FALSE; |
252b5132 RH |
5140 | |
5141 | if (1) | |
5142 | { | |
5143 | asection *s; | |
5144 | EXTR esym; | |
52b9d213 | 5145 | bfd_vma last = 0; |
252b5132 RH |
5146 | unsigned int i; |
5147 | static const char * const name[] = | |
5148 | { | |
5149 | ".text", ".init", ".fini", ".data", | |
5150 | ".rodata", ".sdata", ".sbss", ".bss" | |
5151 | }; | |
5152 | static const int sc[] = { scText, scInit, scFini, scData, | |
5153 | scRData, scSData, scSBss, scBss }; | |
5154 | ||
5155 | esym.jmptbl = 0; | |
5156 | esym.cobol_main = 0; | |
5157 | esym.weakext = 0; | |
5158 | esym.reserved = 0; | |
5159 | esym.ifd = ifdNil; | |
5160 | esym.asym.iss = issNil; | |
5161 | esym.asym.st = stLocal; | |
5162 | esym.asym.reserved = 0; | |
5163 | esym.asym.index = indexNil; | |
5164 | for (i = 0; i < 8; i++) | |
5165 | { | |
5166 | esym.asym.sc = sc[i]; | |
5167 | s = bfd_get_section_by_name (abfd, name[i]); | |
5168 | if (s != NULL) | |
5169 | { | |
5170 | esym.asym.value = s->vma; | |
eea6121a | 5171 | last = s->vma + s->size; |
252b5132 RH |
5172 | } |
5173 | else | |
5174 | esym.asym.value = last; | |
5175 | ||
5176 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
5177 | name[i], &esym)) | |
b34976b6 | 5178 | return FALSE; |
252b5132 RH |
5179 | } |
5180 | } | |
5181 | ||
8423293d | 5182 | for (p = o->map_head.link_order; |
252b5132 RH |
5183 | p != (struct bfd_link_order *) NULL; |
5184 | p = p->next) | |
5185 | { | |
5186 | asection *input_section; | |
5187 | bfd *input_bfd; | |
5188 | const struct ecoff_debug_swap *input_swap; | |
5189 | struct ecoff_debug_info input_debug; | |
5190 | char *eraw_src; | |
5191 | char *eraw_end; | |
5192 | ||
5193 | if (p->type != bfd_indirect_link_order) | |
5194 | { | |
fd96f80f | 5195 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5196 | continue; |
5197 | abort (); | |
5198 | } | |
5199 | ||
5200 | input_section = p->u.indirect.section; | |
5201 | input_bfd = input_section->owner; | |
5202 | ||
0ffa91dd NC |
5203 | if (! is_alpha_elf (input_bfd)) |
5204 | /* I don't know what a non ALPHA ELF bfd would be | |
5205 | doing with a .mdebug section, but I don't really | |
5206 | want to deal with it. */ | |
5207 | continue; | |
252b5132 RH |
5208 | |
5209 | input_swap = (get_elf_backend_data (input_bfd) | |
5210 | ->elf_backend_ecoff_debug_swap); | |
5211 | ||
eea6121a | 5212 | BFD_ASSERT (p->size == input_section->size); |
252b5132 RH |
5213 | |
5214 | /* The ECOFF linking code expects that we have already | |
5215 | read in the debugging information and set up an | |
5216 | ecoff_debug_info structure, so we do that now. */ | |
5217 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
5218 | &input_debug)) | |
b34976b6 | 5219 | return FALSE; |
252b5132 RH |
5220 | |
5221 | if (! (bfd_ecoff_debug_accumulate | |
5222 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5223 | &input_debug, input_swap, info))) | |
b34976b6 | 5224 | return FALSE; |
252b5132 RH |
5225 | |
5226 | /* Loop through the external symbols. For each one with | |
5227 | interesting information, try to find the symbol in | |
5228 | the linker global hash table and save the information | |
5229 | for the output external symbols. */ | |
21d799b5 | 5230 | eraw_src = (char *) input_debug.external_ext; |
252b5132 RH |
5231 | eraw_end = (eraw_src |
5232 | + (input_debug.symbolic_header.iextMax | |
5233 | * input_swap->external_ext_size)); | |
5234 | for (; | |
5235 | eraw_src < eraw_end; | |
5236 | eraw_src += input_swap->external_ext_size) | |
5237 | { | |
5238 | EXTR ext; | |
5239 | const char *name; | |
5240 | struct alpha_elf_link_hash_entry *h; | |
5241 | ||
2c3fc389 | 5242 | (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); |
252b5132 RH |
5243 | if (ext.asym.sc == scNil |
5244 | || ext.asym.sc == scUndefined | |
5245 | || ext.asym.sc == scSUndefined) | |
5246 | continue; | |
5247 | ||
5248 | name = input_debug.ssext + ext.asym.iss; | |
4dfe6ac6 | 5249 | h = alpha_elf_link_hash_lookup (htab, name, FALSE, FALSE, TRUE); |
252b5132 RH |
5250 | if (h == NULL || h->esym.ifd != -2) |
5251 | continue; | |
5252 | ||
5253 | if (ext.ifd != -1) | |
5254 | { | |
5255 | BFD_ASSERT (ext.ifd | |
5256 | < input_debug.symbolic_header.ifdMax); | |
5257 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5258 | } | |
5259 | ||
5260 | h->esym = ext; | |
5261 | } | |
5262 | ||
5263 | /* Free up the information we just read. */ | |
5264 | free (input_debug.line); | |
5265 | free (input_debug.external_dnr); | |
5266 | free (input_debug.external_pdr); | |
5267 | free (input_debug.external_sym); | |
5268 | free (input_debug.external_opt); | |
5269 | free (input_debug.external_aux); | |
5270 | free (input_debug.ss); | |
5271 | free (input_debug.ssext); | |
5272 | free (input_debug.external_fdr); | |
5273 | free (input_debug.external_rfd); | |
5274 | free (input_debug.external_ext); | |
5275 | ||
5276 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5277 | elf_link_input_bfd ignores this section. */ | |
5278 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5279 | } | |
5280 | ||
252b5132 RH |
5281 | /* Build the external symbol information. */ |
5282 | einfo.abfd = abfd; | |
5283 | einfo.info = info; | |
5284 | einfo.debug = &debug; | |
5285 | einfo.swap = swap; | |
b34976b6 | 5286 | einfo.failed = FALSE; |
252b5132 RH |
5287 | elf_link_hash_traverse (elf_hash_table (info), |
5288 | elf64_alpha_output_extsym, | |
2c3fc389 | 5289 | &einfo); |
252b5132 | 5290 | if (einfo.failed) |
b34976b6 | 5291 | return FALSE; |
252b5132 RH |
5292 | |
5293 | /* Set the size of the .mdebug section. */ | |
eea6121a | 5294 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
252b5132 RH |
5295 | |
5296 | /* Skip this section later on (I don't think this currently | |
5297 | matters, but someday it might). */ | |
8423293d | 5298 | o->map_head.link_order = (struct bfd_link_order *) NULL; |
252b5132 RH |
5299 | |
5300 | mdebug_sec = o; | |
5301 | } | |
252b5132 RH |
5302 | } |
5303 | ||
5304 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 5305 | if (! bfd_elf_final_link (abfd, info)) |
b34976b6 | 5306 | return FALSE; |
252b5132 RH |
5307 | |
5308 | /* Now write out the computed sections. */ | |
5309 | ||
5310 | /* The .got subsections... */ | |
5311 | { | |
5312 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
4dfe6ac6 | 5313 | for (i = htab->got_list; |
252b5132 RH |
5314 | i != NULL; |
5315 | i = alpha_elf_tdata(i)->got_link_next) | |
5316 | { | |
5317 | asection *sgot; | |
5318 | ||
5319 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5320 | if (i == dynobj) | |
5321 | continue; | |
5322 | ||
5323 | sgot = alpha_elf_tdata(i)->got; | |
5324 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5325 | sgot->contents, |
5326 | (file_ptr) sgot->output_offset, | |
eea6121a | 5327 | sgot->size)) |
b34976b6 | 5328 | return FALSE; |
252b5132 RH |
5329 | } |
5330 | } | |
5331 | ||
252b5132 RH |
5332 | if (mdebug_sec != (asection *) NULL) |
5333 | { | |
5334 | BFD_ASSERT (abfd->output_has_begun); | |
5335 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5336 | swap, info, | |
5337 | mdebug_sec->filepos)) | |
b34976b6 | 5338 | return FALSE; |
252b5132 RH |
5339 | |
5340 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5341 | } | |
5342 | ||
b34976b6 | 5343 | return TRUE; |
252b5132 | 5344 | } |
fcfbdf31 JJ |
5345 | |
5346 | static enum elf_reloc_type_class | |
7e612e98 AM |
5347 | elf64_alpha_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
5348 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
5349 | const Elf_Internal_Rela *rela) | |
fcfbdf31 | 5350 | { |
f51e552e | 5351 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5352 | { |
5353 | case R_ALPHA_RELATIVE: | |
5354 | return reloc_class_relative; | |
5355 | case R_ALPHA_JMP_SLOT: | |
5356 | return reloc_class_plt; | |
5357 | case R_ALPHA_COPY: | |
5358 | return reloc_class_copy; | |
5359 | default: | |
5360 | return reloc_class_normal; | |
5361 | } | |
5362 | } | |
252b5132 | 5363 | \f |
b35d266b | 5364 | static const struct bfd_elf_special_section elf64_alpha_special_sections[] = |
2f89ff8d | 5365 | { |
07d6d2b8 | 5366 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
0112cd26 | 5367 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
07d6d2b8 | 5368 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
5369 | }; |
5370 | ||
252b5132 RH |
5371 | /* ECOFF swapping routines. These are used when dealing with the |
5372 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5373 | from elf32-mips.c. */ |
252b5132 RH |
5374 | static const struct ecoff_debug_swap |
5375 | elf64_alpha_ecoff_debug_swap = | |
5376 | { | |
5377 | /* Symbol table magic number. */ | |
5378 | magicSym2, | |
5379 | /* Alignment of debugging information. E.g., 4. */ | |
5380 | 8, | |
5381 | /* Sizes of external symbolic information. */ | |
5382 | sizeof (struct hdr_ext), | |
5383 | sizeof (struct dnr_ext), | |
5384 | sizeof (struct pdr_ext), | |
5385 | sizeof (struct sym_ext), | |
5386 | sizeof (struct opt_ext), | |
5387 | sizeof (struct fdr_ext), | |
5388 | sizeof (struct rfd_ext), | |
5389 | sizeof (struct ext_ext), | |
5390 | /* Functions to swap in external symbolic data. */ | |
5391 | ecoff_swap_hdr_in, | |
5392 | ecoff_swap_dnr_in, | |
5393 | ecoff_swap_pdr_in, | |
5394 | ecoff_swap_sym_in, | |
5395 | ecoff_swap_opt_in, | |
5396 | ecoff_swap_fdr_in, | |
5397 | ecoff_swap_rfd_in, | |
5398 | ecoff_swap_ext_in, | |
5399 | _bfd_ecoff_swap_tir_in, | |
5400 | _bfd_ecoff_swap_rndx_in, | |
5401 | /* Functions to swap out external symbolic data. */ | |
5402 | ecoff_swap_hdr_out, | |
5403 | ecoff_swap_dnr_out, | |
5404 | ecoff_swap_pdr_out, | |
5405 | ecoff_swap_sym_out, | |
5406 | ecoff_swap_opt_out, | |
5407 | ecoff_swap_fdr_out, | |
5408 | ecoff_swap_rfd_out, | |
5409 | ecoff_swap_ext_out, | |
5410 | _bfd_ecoff_swap_tir_out, | |
5411 | _bfd_ecoff_swap_rndx_out, | |
5412 | /* Function to read in symbolic data. */ | |
5413 | elf64_alpha_read_ecoff_info | |
5414 | }; | |
5415 | \f | |
70bcb145 JW |
5416 | /* Use a non-standard hash bucket size of 8. */ |
5417 | ||
562ace6b | 5418 | static const struct elf_size_info alpha_elf_size_info = |
70bcb145 JW |
5419 | { |
5420 | sizeof (Elf64_External_Ehdr), | |
5421 | sizeof (Elf64_External_Phdr), | |
5422 | sizeof (Elf64_External_Shdr), | |
5423 | sizeof (Elf64_External_Rel), | |
5424 | sizeof (Elf64_External_Rela), | |
5425 | sizeof (Elf64_External_Sym), | |
5426 | sizeof (Elf64_External_Dyn), | |
5427 | sizeof (Elf_External_Note), | |
5428 | 8, | |
5429 | 1, | |
45d6a902 | 5430 | 64, 3, |
70bcb145 JW |
5431 | ELFCLASS64, EV_CURRENT, |
5432 | bfd_elf64_write_out_phdrs, | |
5433 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 5434 | bfd_elf64_checksum_contents, |
70bcb145 | 5435 | bfd_elf64_write_relocs, |
73ff0d56 | 5436 | bfd_elf64_swap_symbol_in, |
70bcb145 JW |
5437 | bfd_elf64_swap_symbol_out, |
5438 | bfd_elf64_slurp_reloc_table, | |
5439 | bfd_elf64_slurp_symbol_table, | |
5440 | bfd_elf64_swap_dyn_in, | |
5441 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
5442 | bfd_elf64_swap_reloc_in, |
5443 | bfd_elf64_swap_reloc_out, | |
5444 | bfd_elf64_swap_reloca_in, | |
5445 | bfd_elf64_swap_reloca_out | |
70bcb145 JW |
5446 | }; |
5447 | ||
6d00b590 | 5448 | #define TARGET_LITTLE_SYM alpha_elf64_vec |
252b5132 RH |
5449 | #define TARGET_LITTLE_NAME "elf64-alpha" |
5450 | #define ELF_ARCH bfd_arch_alpha | |
ae95ffa6 | 5451 | #define ELF_TARGET_ID ALPHA_ELF_DATA |
56fc028e AJ |
5452 | #define ELF_MACHINE_CODE EM_ALPHA |
5453 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 5454 | #define ELF_COMMONPAGESIZE 0x2000 |
252b5132 RH |
5455 | |
5456 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5457 | elf64_alpha_bfd_link_hash_table_create | |
5458 | ||
5459 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5460 | elf64_alpha_bfd_reloc_type_lookup | |
157090f7 AM |
5461 | #define bfd_elf64_bfd_reloc_name_lookup \ |
5462 | elf64_alpha_bfd_reloc_name_lookup | |
252b5132 RH |
5463 | #define elf_info_to_howto \ |
5464 | elf64_alpha_info_to_howto | |
5465 | ||
5466 | #define bfd_elf64_mkobject \ | |
5467 | elf64_alpha_mkobject | |
5468 | #define elf_backend_object_p \ | |
5469 | elf64_alpha_object_p | |
5470 | ||
5471 | #define elf_backend_section_from_shdr \ | |
5472 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5473 | #define elf_backend_section_flags \ |
5474 | elf64_alpha_section_flags | |
252b5132 RH |
5475 | #define elf_backend_fake_sections \ |
5476 | elf64_alpha_fake_sections | |
5477 | ||
5478 | #define bfd_elf64_bfd_is_local_label_name \ | |
5479 | elf64_alpha_is_local_label_name | |
5480 | #define bfd_elf64_find_nearest_line \ | |
5481 | elf64_alpha_find_nearest_line | |
5482 | #define bfd_elf64_bfd_relax_section \ | |
5483 | elf64_alpha_relax_section | |
5484 | ||
5485 | #define elf_backend_add_symbol_hook \ | |
5486 | elf64_alpha_add_symbol_hook | |
13285a1b AM |
5487 | #define elf_backend_relocs_compatible \ |
5488 | _bfd_elf_relocs_compatible | |
6fc5bb57 AM |
5489 | #define elf_backend_sort_relocs_p \ |
5490 | elf64_alpha_sort_relocs_p | |
252b5132 RH |
5491 | #define elf_backend_check_relocs \ |
5492 | elf64_alpha_check_relocs | |
5493 | #define elf_backend_create_dynamic_sections \ | |
5494 | elf64_alpha_create_dynamic_sections | |
5495 | #define elf_backend_adjust_dynamic_symbol \ | |
5496 | elf64_alpha_adjust_dynamic_symbol | |
747ffa7b AM |
5497 | #define elf_backend_merge_symbol_attribute \ |
5498 | elf64_alpha_merge_symbol_attribute | |
48f4b4f5 RH |
5499 | #define elf_backend_copy_indirect_symbol \ |
5500 | elf64_alpha_copy_indirect_symbol | |
252b5132 RH |
5501 | #define elf_backend_always_size_sections \ |
5502 | elf64_alpha_always_size_sections | |
5503 | #define elf_backend_size_dynamic_sections \ | |
5504 | elf64_alpha_size_dynamic_sections | |
74541ad4 | 5505 | #define elf_backend_omit_section_dynsym \ |
d00dd7dc | 5506 | _bfd_elf_omit_section_dynsym_all |
252b5132 RH |
5507 | #define elf_backend_relocate_section \ |
5508 | elf64_alpha_relocate_section | |
5509 | #define elf_backend_finish_dynamic_symbol \ | |
5510 | elf64_alpha_finish_dynamic_symbol | |
5511 | #define elf_backend_finish_dynamic_sections \ | |
5512 | elf64_alpha_finish_dynamic_sections | |
5513 | #define bfd_elf64_bfd_final_link \ | |
5514 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5515 | #define elf_backend_reloc_type_class \ |
5516 | elf64_alpha_reloc_type_class | |
252b5132 | 5517 | |
e117360e RH |
5518 | #define elf_backend_can_gc_sections 1 |
5519 | #define elf_backend_gc_mark_hook elf64_alpha_gc_mark_hook | |
e117360e | 5520 | |
252b5132 RH |
5521 | #define elf_backend_ecoff_debug_swap \ |
5522 | &elf64_alpha_ecoff_debug_swap | |
5523 | ||
70bcb145 JW |
5524 | #define elf_backend_size_info \ |
5525 | alpha_elf_size_info | |
5526 | ||
29ef7005 L |
5527 | #define elf_backend_special_sections \ |
5528 | elf64_alpha_special_sections | |
2f89ff8d | 5529 | |
38b1a46c | 5530 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5531 | #define elf_backend_want_got_plt 0 |
5532 | #define elf_backend_plt_readonly 0 | |
5533 | #define elf_backend_want_plt_sym 1 | |
5534 | #define elf_backend_got_header_size 0 | |
64f52338 | 5535 | #define elf_backend_dtrel_excludes_plt 1 |
252b5132 RH |
5536 | |
5537 | #include "elf64-target.h" | |
2238051f RH |
5538 | \f |
5539 | /* FreeBSD support. */ | |
5540 | ||
5541 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 5542 | #define TARGET_LITTLE_SYM alpha_elf64_fbsd_vec |
2238051f RH |
5543 | #undef TARGET_LITTLE_NAME |
5544 | #define TARGET_LITTLE_NAME "elf64-alpha-freebsd" | |
d1036acb L |
5545 | #undef ELF_OSABI |
5546 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2238051f RH |
5547 | |
5548 | /* The kernel recognizes executables as valid only if they carry a | |
5549 | "FreeBSD" label in the ELF header. So we put this label on all | |
5550 | executables and (for simplicity) also all other object files. */ | |
5551 | ||
ed7e9d0b AM |
5552 | static bfd_boolean |
5553 | elf64_alpha_fbsd_init_file_header (bfd *abfd, struct bfd_link_info *info) | |
2238051f RH |
5554 | { |
5555 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
5556 | ||
ed7e9d0b AM |
5557 | if (!_bfd_elf_init_file_header (abfd, info)) |
5558 | return FALSE; | |
5559 | ||
2238051f RH |
5560 | i_ehdrp = elf_elfheader (abfd); |
5561 | ||
5562 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
d1036acb | 5563 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; |
2238051f RH |
5564 | #ifdef OLD_FREEBSD_ABI_LABEL |
5565 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5566 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
5567 | #endif | |
ed7e9d0b | 5568 | return TRUE; |
2238051f RH |
5569 | } |
5570 | ||
ed7e9d0b AM |
5571 | #undef elf_backend_init_file_header |
5572 | #define elf_backend_init_file_header \ | |
5573 | elf64_alpha_fbsd_init_file_header | |
2238051f | 5574 | |
571fe01f | 5575 | #undef elf64_bed |
2238051f RH |
5576 | #define elf64_bed elf64_alpha_fbsd_bed |
5577 | ||
5578 | #include "elf64-target.h" |