Commit | Line | Data |
---|---|---|
cbe79dfe | 1 | /* IA-64 support for 64-bit ELF |
2571583a | 2 | Copyright (C) 1998-2017 Free Software Foundation, Inc. |
cbe79dfe TG |
3 | Contributed by David Mosberger-Tang <davidm@hpl.hp.com> |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
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 | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
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. | |
16 | ||
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 | |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
21 | ||
22 | #include "sysdep.h" | |
23 | #include "bfd.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "opcode/ia64.h" | |
27 | #include "elf/ia64.h" | |
28 | #include "objalloc.h" | |
29 | #include "hashtab.h" | |
30 | #include "bfd_stdint.h" | |
31 | #include "elfxx-ia64.h" | |
32 | ||
33 | #define ARCH_SIZE NN | |
34 | ||
35 | #if ARCH_SIZE == 64 | |
36 | #define LOG_SECTION_ALIGN 3 | |
37 | #endif | |
38 | ||
39 | #if ARCH_SIZE == 32 | |
40 | #define LOG_SECTION_ALIGN 2 | |
41 | #endif | |
42 | ||
cbe79dfe TG |
43 | typedef struct bfd_hash_entry *(*new_hash_entry_func) |
44 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); | |
45 | ||
46 | /* In dynamically (linker-) created sections, we generally need to keep track | |
47 | of the place a symbol or expression got allocated to. This is done via hash | |
48 | tables that store entries of the following type. */ | |
49 | ||
50 | struct elfNN_ia64_dyn_sym_info | |
51 | { | |
52 | /* The addend for which this entry is relevant. */ | |
53 | bfd_vma addend; | |
54 | ||
55 | bfd_vma got_offset; | |
56 | bfd_vma fptr_offset; | |
57 | bfd_vma pltoff_offset; | |
58 | bfd_vma plt_offset; | |
59 | bfd_vma plt2_offset; | |
60 | bfd_vma tprel_offset; | |
61 | bfd_vma dtpmod_offset; | |
62 | bfd_vma dtprel_offset; | |
63 | ||
64 | /* The symbol table entry, if any, that this was derived from. */ | |
65 | struct elf_link_hash_entry *h; | |
66 | ||
67 | /* Used to count non-got, non-plt relocations for delayed sizing | |
68 | of relocation sections. */ | |
69 | struct elfNN_ia64_dyn_reloc_entry | |
70 | { | |
71 | struct elfNN_ia64_dyn_reloc_entry *next; | |
72 | asection *srel; | |
73 | int type; | |
74 | int count; | |
75 | ||
76 | /* Is this reloc against readonly section? */ | |
77 | bfd_boolean reltext; | |
78 | } *reloc_entries; | |
79 | ||
80 | /* TRUE when the section contents have been updated. */ | |
81 | unsigned got_done : 1; | |
82 | unsigned fptr_done : 1; | |
83 | unsigned pltoff_done : 1; | |
84 | unsigned tprel_done : 1; | |
85 | unsigned dtpmod_done : 1; | |
86 | unsigned dtprel_done : 1; | |
87 | ||
88 | /* TRUE for the different kinds of linker data we want created. */ | |
89 | unsigned want_got : 1; | |
90 | unsigned want_gotx : 1; | |
91 | unsigned want_fptr : 1; | |
92 | unsigned want_ltoff_fptr : 1; | |
93 | unsigned want_plt : 1; | |
94 | unsigned want_plt2 : 1; | |
95 | unsigned want_pltoff : 1; | |
96 | unsigned want_tprel : 1; | |
97 | unsigned want_dtpmod : 1; | |
98 | unsigned want_dtprel : 1; | |
99 | }; | |
100 | ||
101 | struct elfNN_ia64_local_hash_entry | |
102 | { | |
103 | int id; | |
104 | unsigned int r_sym; | |
105 | /* The number of elements in elfNN_ia64_dyn_sym_info array. */ | |
106 | unsigned int count; | |
107 | /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ | |
108 | unsigned int sorted_count; | |
109 | /* The size of elfNN_ia64_dyn_sym_info array. */ | |
110 | unsigned int size; | |
111 | /* The array of elfNN_ia64_dyn_sym_info. */ | |
112 | struct elfNN_ia64_dyn_sym_info *info; | |
113 | ||
114 | /* TRUE if this hash entry's addends was translated for | |
115 | SHF_MERGE optimization. */ | |
116 | unsigned sec_merge_done : 1; | |
117 | }; | |
118 | ||
119 | struct elfNN_ia64_link_hash_entry | |
120 | { | |
121 | struct elf_link_hash_entry root; | |
122 | /* The number of elements in elfNN_ia64_dyn_sym_info array. */ | |
123 | unsigned int count; | |
124 | /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ | |
125 | unsigned int sorted_count; | |
126 | /* The size of elfNN_ia64_dyn_sym_info array. */ | |
127 | unsigned int size; | |
128 | /* The array of elfNN_ia64_dyn_sym_info. */ | |
129 | struct elfNN_ia64_dyn_sym_info *info; | |
130 | }; | |
131 | ||
132 | struct elfNN_ia64_link_hash_table | |
133 | { | |
134 | /* The main hash table. */ | |
135 | struct elf_link_hash_table root; | |
136 | ||
137 | asection *fptr_sec; /* Function descriptor table (or NULL). */ | |
138 | asection *rel_fptr_sec; /* Dynamic relocation section for same. */ | |
139 | asection *pltoff_sec; /* Private descriptors for plt (or NULL). */ | |
140 | asection *rel_pltoff_sec; /* Dynamic relocation section for same. */ | |
141 | ||
142 | bfd_size_type minplt_entries; /* Number of minplt entries. */ | |
143 | unsigned reltext : 1; /* Are there relocs against readonly sections? */ | |
144 | unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */ | |
145 | bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */ | |
146 | /* There are maybe R_IA64_GPREL22 relocations, including those | |
147 | optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT | |
148 | sections. We need to record those sections so that we can choose | |
149 | a proper GP to cover all R_IA64_GPREL22 relocations. */ | |
150 | asection *max_short_sec; /* Maximum short output section. */ | |
151 | bfd_vma max_short_offset; /* Maximum short offset. */ | |
152 | asection *min_short_sec; /* Minimum short output section. */ | |
153 | bfd_vma min_short_offset; /* Minimum short offset. */ | |
154 | ||
155 | htab_t loc_hash_table; | |
156 | void *loc_hash_memory; | |
157 | }; | |
158 | ||
159 | struct elfNN_ia64_allocate_data | |
160 | { | |
161 | struct bfd_link_info *info; | |
162 | bfd_size_type ofs; | |
163 | bfd_boolean only_got; | |
164 | }; | |
165 | ||
166 | #define elfNN_ia64_hash_table(p) \ | |
167 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
168 | == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL) | |
169 | ||
170 | static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info | |
171 | (struct elfNN_ia64_link_hash_table *ia64_info, | |
172 | struct elf_link_hash_entry *h, | |
173 | bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create); | |
174 | static bfd_boolean elfNN_ia64_dynamic_symbol_p | |
175 | (struct elf_link_hash_entry *h, struct bfd_link_info *info, int); | |
176 | static bfd_boolean elfNN_ia64_choose_gp | |
177 | (bfd *abfd, struct bfd_link_info *info, bfd_boolean final); | |
178 | static void elfNN_ia64_dyn_sym_traverse | |
179 | (struct elfNN_ia64_link_hash_table *ia64_info, | |
2c3fc389 NC |
180 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *), |
181 | void * info); | |
cbe79dfe | 182 | static bfd_boolean allocate_global_data_got |
2c3fc389 | 183 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe | 184 | static bfd_boolean allocate_global_fptr_got |
2c3fc389 | 185 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe | 186 | static bfd_boolean allocate_local_got |
2c3fc389 | 187 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe TG |
188 | static bfd_boolean elfNN_ia64_hpux_vec |
189 | (const bfd_target *vec); | |
190 | static bfd_boolean allocate_dynrel_entries | |
2c3fc389 | 191 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe TG |
192 | static asection *get_pltoff |
193 | (bfd *abfd, struct bfd_link_info *info, | |
194 | struct elfNN_ia64_link_hash_table *ia64_info); | |
195 | \f | |
196 | /* ia64-specific relocation. */ | |
197 | ||
198 | /* Given a ELF reloc, return the matching HOWTO structure. */ | |
199 | ||
200 | static void | |
201 | elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
202 | arelent *bfd_reloc, | |
203 | Elf_Internal_Rela *elf_reloc) | |
204 | { | |
205 | bfd_reloc->howto | |
206 | = ia64_elf_lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info)); | |
207 | } | |
208 | \f | |
209 | #define PLT_HEADER_SIZE (3 * 16) | |
210 | #define PLT_MIN_ENTRY_SIZE (1 * 16) | |
211 | #define PLT_FULL_ENTRY_SIZE (2 * 16) | |
212 | #define PLT_RESERVED_WORDS 3 | |
213 | ||
214 | static const bfd_byte plt_header[PLT_HEADER_SIZE] = | |
215 | { | |
216 | 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */ | |
217 | 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */ | |
218 | 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ | |
219 | 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */ | |
220 | 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */ | |
221 | 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ | |
222 | 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */ | |
223 | 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */ | |
224 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ | |
225 | }; | |
226 | ||
227 | static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] = | |
228 | { | |
229 | 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */ | |
230 | 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */ | |
231 | 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */ | |
232 | }; | |
233 | ||
234 | static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] = | |
235 | { | |
236 | 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */ | |
237 | 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/ | |
238 | 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */ | |
239 | 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */ | |
240 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ | |
241 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ | |
242 | }; | |
243 | ||
244 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
245 | ||
246 | static const bfd_byte oor_brl[16] = | |
247 | { | |
248 | 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ | |
249 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */ | |
250 | 0x00, 0x00, 0x00, 0xc0 | |
251 | }; | |
252 | ||
253 | static const bfd_byte oor_ip[48] = | |
254 | { | |
255 | 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ | |
256 | 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */ | |
257 | 0x01, 0x00, 0x00, 0x60, | |
258 | 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */ | |
259 | 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */ | |
260 | 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */ | |
261 | 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */ | |
262 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ | |
263 | 0x60, 0x00, 0x80, 0x00 /* br b6;; */ | |
264 | }; | |
265 | ||
266 | static size_t oor_branch_size = sizeof (oor_brl); | |
267 | ||
268 | void | |
269 | bfd_elfNN_ia64_after_parse (int itanium) | |
270 | { | |
271 | oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl); | |
272 | } | |
273 | \f | |
274 | ||
275 | /* Rename some of the generic section flags to better document how they | |
276 | are used here. */ | |
277 | #define skip_relax_pass_0 sec_flg0 | |
278 | #define skip_relax_pass_1 sec_flg1 | |
279 | ||
280 | /* These functions do relaxation for IA-64 ELF. */ | |
281 | ||
282 | static void | |
283 | elfNN_ia64_update_short_info (asection *sec, bfd_vma offset, | |
284 | struct elfNN_ia64_link_hash_table *ia64_info) | |
285 | { | |
286 | /* Skip ABS and SHF_IA_64_SHORT sections. */ | |
287 | if (sec == bfd_abs_section_ptr | |
288 | || (sec->flags & SEC_SMALL_DATA) != 0) | |
289 | return; | |
290 | ||
291 | if (!ia64_info->min_short_sec) | |
292 | { | |
293 | ia64_info->max_short_sec = sec; | |
294 | ia64_info->max_short_offset = offset; | |
295 | ia64_info->min_short_sec = sec; | |
296 | ia64_info->min_short_offset = offset; | |
297 | } | |
298 | else if (sec == ia64_info->max_short_sec | |
299 | && offset > ia64_info->max_short_offset) | |
300 | ia64_info->max_short_offset = offset; | |
301 | else if (sec == ia64_info->min_short_sec | |
302 | && offset < ia64_info->min_short_offset) | |
303 | ia64_info->min_short_offset = offset; | |
304 | else if (sec->output_section->vma | |
305 | > ia64_info->max_short_sec->vma) | |
306 | { | |
307 | ia64_info->max_short_sec = sec; | |
308 | ia64_info->max_short_offset = offset; | |
309 | } | |
310 | else if (sec->output_section->vma | |
311 | < ia64_info->min_short_sec->vma) | |
312 | { | |
313 | ia64_info->min_short_sec = sec; | |
314 | ia64_info->min_short_offset = offset; | |
315 | } | |
316 | } | |
317 | ||
318 | static bfd_boolean | |
319 | elfNN_ia64_relax_section (bfd *abfd, asection *sec, | |
320 | struct bfd_link_info *link_info, | |
321 | bfd_boolean *again) | |
322 | { | |
323 | struct one_fixup | |
324 | { | |
325 | struct one_fixup *next; | |
326 | asection *tsec; | |
327 | bfd_vma toff; | |
328 | bfd_vma trampoff; | |
329 | }; | |
330 | ||
331 | Elf_Internal_Shdr *symtab_hdr; | |
332 | Elf_Internal_Rela *internal_relocs; | |
333 | Elf_Internal_Rela *irel, *irelend; | |
334 | bfd_byte *contents; | |
335 | Elf_Internal_Sym *isymbuf = NULL; | |
336 | struct elfNN_ia64_link_hash_table *ia64_info; | |
337 | struct one_fixup *fixups = NULL; | |
338 | bfd_boolean changed_contents = FALSE; | |
339 | bfd_boolean changed_relocs = FALSE; | |
340 | bfd_boolean changed_got = FALSE; | |
341 | bfd_boolean skip_relax_pass_0 = TRUE; | |
342 | bfd_boolean skip_relax_pass_1 = TRUE; | |
343 | bfd_vma gp = 0; | |
344 | ||
345 | /* Assume we're not going to change any sizes, and we'll only need | |
346 | one pass. */ | |
347 | *again = FALSE; | |
348 | ||
0e1862bb | 349 | if (bfd_link_relocatable (link_info)) |
cbe79dfe TG |
350 | (*link_info->callbacks->einfo) |
351 | (_("%P%F: --relax and -r may not be used together\n")); | |
352 | ||
353 | /* Don't even try to relax for non-ELF outputs. */ | |
354 | if (!is_elf_hash_table (link_info->hash)) | |
355 | return FALSE; | |
356 | ||
357 | /* Nothing to do if there are no relocations or there is no need for | |
358 | the current pass. */ | |
359 | if ((sec->flags & SEC_RELOC) == 0 | |
360 | || sec->reloc_count == 0 | |
361 | || (link_info->relax_pass == 0 && sec->skip_relax_pass_0) | |
362 | || (link_info->relax_pass == 1 && sec->skip_relax_pass_1)) | |
363 | return TRUE; | |
364 | ||
365 | ia64_info = elfNN_ia64_hash_table (link_info); | |
366 | if (ia64_info == NULL) | |
367 | return FALSE; | |
368 | ||
369 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
370 | ||
371 | /* Load the relocations for this section. */ | |
372 | internal_relocs = (_bfd_elf_link_read_relocs | |
373 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, | |
374 | link_info->keep_memory)); | |
375 | if (internal_relocs == NULL) | |
376 | return FALSE; | |
377 | ||
378 | irelend = internal_relocs + sec->reloc_count; | |
379 | ||
380 | /* Get the section contents. */ | |
381 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
382 | contents = elf_section_data (sec)->this_hdr.contents; | |
383 | else | |
384 | { | |
385 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
386 | goto error_return; | |
387 | } | |
388 | ||
389 | for (irel = internal_relocs; irel < irelend; irel++) | |
390 | { | |
391 | unsigned long r_type = ELFNN_R_TYPE (irel->r_info); | |
392 | bfd_vma symaddr, reladdr, trampoff, toff, roff; | |
393 | asection *tsec; | |
394 | struct one_fixup *f; | |
395 | bfd_size_type amt; | |
396 | bfd_boolean is_branch; | |
397 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
398 | char symtype; | |
399 | ||
400 | switch (r_type) | |
401 | { | |
402 | case R_IA64_PCREL21B: | |
403 | case R_IA64_PCREL21BI: | |
404 | case R_IA64_PCREL21M: | |
405 | case R_IA64_PCREL21F: | |
406 | /* In pass 1, all br relaxations are done. We can skip it. */ | |
407 | if (link_info->relax_pass == 1) | |
408 | continue; | |
409 | skip_relax_pass_0 = FALSE; | |
410 | is_branch = TRUE; | |
411 | break; | |
412 | ||
413 | case R_IA64_PCREL60B: | |
414 | /* We can't optimize brl to br in pass 0 since br relaxations | |
415 | will increase the code size. Defer it to pass 1. */ | |
416 | if (link_info->relax_pass == 0) | |
417 | { | |
418 | skip_relax_pass_1 = FALSE; | |
419 | continue; | |
420 | } | |
421 | is_branch = TRUE; | |
422 | break; | |
423 | ||
424 | case R_IA64_GPREL22: | |
425 | /* Update max_short_sec/min_short_sec. */ | |
426 | ||
427 | case R_IA64_LTOFF22X: | |
428 | case R_IA64_LDXMOV: | |
429 | /* We can't relax ldx/mov in pass 0 since br relaxations will | |
430 | increase the code size. Defer it to pass 1. */ | |
431 | if (link_info->relax_pass == 0) | |
432 | { | |
433 | skip_relax_pass_1 = FALSE; | |
434 | continue; | |
435 | } | |
436 | is_branch = FALSE; | |
437 | break; | |
438 | ||
439 | default: | |
440 | continue; | |
441 | } | |
442 | ||
443 | /* Get the value of the symbol referred to by the reloc. */ | |
444 | if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
445 | { | |
446 | /* A local symbol. */ | |
447 | Elf_Internal_Sym *isym; | |
448 | ||
449 | /* Read this BFD's local symbols. */ | |
450 | if (isymbuf == NULL) | |
451 | { | |
452 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
453 | if (isymbuf == NULL) | |
454 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
455 | symtab_hdr->sh_info, 0, | |
456 | NULL, NULL, NULL); | |
457 | if (isymbuf == 0) | |
458 | goto error_return; | |
459 | } | |
460 | ||
461 | isym = isymbuf + ELFNN_R_SYM (irel->r_info); | |
462 | if (isym->st_shndx == SHN_UNDEF) | |
463 | continue; /* We can't do anything with undefined symbols. */ | |
464 | else if (isym->st_shndx == SHN_ABS) | |
465 | tsec = bfd_abs_section_ptr; | |
466 | else if (isym->st_shndx == SHN_COMMON) | |
467 | tsec = bfd_com_section_ptr; | |
468 | else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON) | |
469 | tsec = bfd_com_section_ptr; | |
470 | else | |
471 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
472 | ||
473 | toff = isym->st_value; | |
474 | dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE); | |
475 | symtype = ELF_ST_TYPE (isym->st_info); | |
476 | } | |
477 | else | |
478 | { | |
479 | unsigned long indx; | |
480 | struct elf_link_hash_entry *h; | |
481 | ||
482 | indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
483 | h = elf_sym_hashes (abfd)[indx]; | |
484 | BFD_ASSERT (h != NULL); | |
485 | ||
486 | while (h->root.type == bfd_link_hash_indirect | |
487 | || h->root.type == bfd_link_hash_warning) | |
488 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
489 | ||
490 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE); | |
491 | ||
492 | /* For branches to dynamic symbols, we're interested instead | |
493 | in a branch to the PLT entry. */ | |
494 | if (is_branch && dyn_i && dyn_i->want_plt2) | |
495 | { | |
496 | /* Internal branches shouldn't be sent to the PLT. | |
497 | Leave this for now and we'll give an error later. */ | |
498 | if (r_type != R_IA64_PCREL21B) | |
499 | continue; | |
500 | ||
501 | tsec = ia64_info->root.splt; | |
502 | toff = dyn_i->plt2_offset; | |
503 | BFD_ASSERT (irel->r_addend == 0); | |
504 | } | |
505 | ||
506 | /* Can't do anything else with dynamic symbols. */ | |
507 | else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type)) | |
508 | continue; | |
509 | ||
510 | else | |
511 | { | |
512 | /* We can't do anything with undefined symbols. */ | |
513 | if (h->root.type == bfd_link_hash_undefined | |
514 | || h->root.type == bfd_link_hash_undefweak) | |
515 | continue; | |
516 | ||
517 | tsec = h->root.u.def.section; | |
518 | toff = h->root.u.def.value; | |
519 | } | |
520 | ||
521 | symtype = h->type; | |
522 | } | |
523 | ||
dbaa2011 | 524 | if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE) |
cbe79dfe TG |
525 | { |
526 | /* At this stage in linking, no SEC_MERGE symbol has been | |
527 | adjusted, so all references to such symbols need to be | |
528 | passed through _bfd_merged_section_offset. (Later, in | |
529 | relocate_section, all SEC_MERGE symbols *except* for | |
530 | section symbols have been adjusted.) | |
531 | ||
532 | gas may reduce relocations against symbols in SEC_MERGE | |
533 | sections to a relocation against the section symbol when | |
534 | the original addend was zero. When the reloc is against | |
535 | a section symbol we should include the addend in the | |
536 | offset passed to _bfd_merged_section_offset, since the | |
537 | location of interest is the original symbol. On the | |
538 | other hand, an access to "sym+addend" where "sym" is not | |
539 | a section symbol should not include the addend; Such an | |
540 | access is presumed to be an offset from "sym"; The | |
541 | location of interest is just "sym". */ | |
542 | if (symtype == STT_SECTION) | |
543 | toff += irel->r_addend; | |
544 | ||
545 | toff = _bfd_merged_section_offset (abfd, &tsec, | |
546 | elf_section_data (tsec)->sec_info, | |
547 | toff); | |
548 | ||
549 | if (symtype != STT_SECTION) | |
550 | toff += irel->r_addend; | |
551 | } | |
552 | else | |
553 | toff += irel->r_addend; | |
554 | ||
555 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; | |
556 | ||
557 | roff = irel->r_offset; | |
558 | ||
559 | if (is_branch) | |
560 | { | |
561 | bfd_signed_vma offset; | |
562 | ||
563 | reladdr = (sec->output_section->vma | |
564 | + sec->output_offset | |
565 | + roff) & (bfd_vma) -4; | |
566 | ||
567 | /* The .plt section is aligned at 32byte and the .text section | |
568 | is aligned at 64byte. The .text section is right after the | |
569 | .plt section. After the first relaxation pass, linker may | |
570 | increase the gap between the .plt and .text sections up | |
571 | to 32byte. We assume linker will always insert 32byte | |
a8685210 | 572 | between the .plt and .text sections after the first |
cbe79dfe TG |
573 | relaxation pass. */ |
574 | if (tsec == ia64_info->root.splt) | |
575 | offset = -0x1000000 + 32; | |
576 | else | |
577 | offset = -0x1000000; | |
578 | ||
579 | /* If the branch is in range, no need to do anything. */ | |
d17fe7b7 | 580 | if ((bfd_signed_vma) (symaddr - reladdr) >= offset |
cbe79dfe TG |
581 | && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0) |
582 | { | |
583 | /* If the 60-bit branch is in 21-bit range, optimize it. */ | |
584 | if (r_type == R_IA64_PCREL60B) | |
585 | { | |
586 | ia64_elf_relax_brl (contents, roff); | |
587 | ||
588 | irel->r_info | |
589 | = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
590 | R_IA64_PCREL21B); | |
591 | ||
592 | /* If the original relocation offset points to slot | |
593 | 1, change it to slot 2. */ | |
594 | if ((irel->r_offset & 3) == 1) | |
595 | irel->r_offset += 1; | |
596 | } | |
597 | ||
598 | continue; | |
599 | } | |
600 | else if (r_type == R_IA64_PCREL60B) | |
601 | continue; | |
602 | else if (ia64_elf_relax_br (contents, roff)) | |
603 | { | |
604 | irel->r_info | |
605 | = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
606 | R_IA64_PCREL60B); | |
607 | ||
608 | /* Make the relocation offset point to slot 1. */ | |
609 | irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1; | |
610 | continue; | |
611 | } | |
612 | ||
613 | /* We can't put a trampoline in a .init/.fini section. Issue | |
614 | an error. */ | |
615 | if (strcmp (sec->output_section->name, ".init") == 0 | |
616 | || strcmp (sec->output_section->name, ".fini") == 0) | |
617 | { | |
4eca0228 | 618 | _bfd_error_handler |
695344c0 | 619 | /* xgettext:c-format */ |
d42c267e | 620 | (_("%B: Can't relax br at %#Lx in section `%A'." |
c08bb8dd | 621 | " Please use brl or indirect branch."), |
d42c267e | 622 | sec->owner, roff, sec); |
cbe79dfe TG |
623 | bfd_set_error (bfd_error_bad_value); |
624 | goto error_return; | |
625 | } | |
626 | ||
627 | /* If the branch and target are in the same section, you've | |
628 | got one honking big section and we can't help you unless | |
629 | you are branching backwards. You'll get an error message | |
630 | later. */ | |
631 | if (tsec == sec && toff > roff) | |
632 | continue; | |
633 | ||
634 | /* Look for an existing fixup to this address. */ | |
635 | for (f = fixups; f ; f = f->next) | |
636 | if (f->tsec == tsec && f->toff == toff) | |
637 | break; | |
638 | ||
639 | if (f == NULL) | |
640 | { | |
641 | /* Two alternatives: If it's a branch to a PLT entry, we can | |
642 | make a copy of the FULL_PLT entry. Otherwise, we'll have | |
643 | to use a `brl' insn to get where we're going. */ | |
644 | ||
645 | size_t size; | |
646 | ||
647 | if (tsec == ia64_info->root.splt) | |
648 | size = sizeof (plt_full_entry); | |
649 | else | |
650 | size = oor_branch_size; | |
651 | ||
652 | /* Resize the current section to make room for the new branch. */ | |
653 | trampoff = (sec->size + 15) & (bfd_vma) -16; | |
654 | ||
655 | /* If trampoline is out of range, there is nothing we | |
656 | can do. */ | |
657 | offset = trampoff - (roff & (bfd_vma) -4); | |
658 | if (offset < -0x1000000 || offset > 0x0FFFFF0) | |
659 | continue; | |
660 | ||
661 | amt = trampoff + size; | |
662 | contents = (bfd_byte *) bfd_realloc (contents, amt); | |
663 | if (contents == NULL) | |
664 | goto error_return; | |
665 | sec->size = amt; | |
666 | ||
667 | if (tsec == ia64_info->root.splt) | |
668 | { | |
669 | memcpy (contents + trampoff, plt_full_entry, size); | |
670 | ||
671 | /* Hijack the old relocation for use as the PLTOFF reloc. */ | |
672 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
673 | R_IA64_PLTOFF22); | |
674 | irel->r_offset = trampoff; | |
675 | } | |
676 | else | |
677 | { | |
678 | if (size == sizeof (oor_ip)) | |
679 | { | |
680 | memcpy (contents + trampoff, oor_ip, size); | |
681 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
682 | R_IA64_PCREL64I); | |
683 | irel->r_addend -= 16; | |
684 | irel->r_offset = trampoff + 2; | |
685 | } | |
686 | else | |
687 | { | |
688 | memcpy (contents + trampoff, oor_brl, size); | |
689 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
690 | R_IA64_PCREL60B); | |
691 | irel->r_offset = trampoff + 2; | |
692 | } | |
693 | ||
694 | } | |
695 | ||
696 | /* Record the fixup so we don't do it again this section. */ | |
697 | f = (struct one_fixup *) | |
698 | bfd_malloc ((bfd_size_type) sizeof (*f)); | |
699 | f->next = fixups; | |
700 | f->tsec = tsec; | |
701 | f->toff = toff; | |
702 | f->trampoff = trampoff; | |
703 | fixups = f; | |
704 | } | |
705 | else | |
706 | { | |
707 | /* If trampoline is out of range, there is nothing we | |
708 | can do. */ | |
709 | offset = f->trampoff - (roff & (bfd_vma) -4); | |
710 | if (offset < -0x1000000 || offset > 0x0FFFFF0) | |
711 | continue; | |
712 | ||
713 | /* Nop out the reloc, since we're finalizing things here. */ | |
714 | irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
715 | } | |
716 | ||
717 | /* Fix up the existing branch to hit the trampoline. */ | |
718 | if (ia64_elf_install_value (contents + roff, offset, r_type) | |
719 | != bfd_reloc_ok) | |
720 | goto error_return; | |
721 | ||
722 | changed_contents = TRUE; | |
723 | changed_relocs = TRUE; | |
724 | } | |
725 | else | |
726 | { | |
727 | /* Fetch the gp. */ | |
728 | if (gp == 0) | |
729 | { | |
730 | bfd *obfd = sec->output_section->owner; | |
731 | gp = _bfd_get_gp_value (obfd); | |
732 | if (gp == 0) | |
733 | { | |
734 | if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE)) | |
735 | goto error_return; | |
736 | gp = _bfd_get_gp_value (obfd); | |
737 | } | |
738 | } | |
739 | ||
740 | /* If the data is out of range, do nothing. */ | |
741 | if ((bfd_signed_vma) (symaddr - gp) >= 0x200000 | |
742 | ||(bfd_signed_vma) (symaddr - gp) < -0x200000) | |
743 | continue; | |
744 | ||
745 | if (r_type == R_IA64_GPREL22) | |
746 | elfNN_ia64_update_short_info (tsec->output_section, | |
747 | tsec->output_offset + toff, | |
748 | ia64_info); | |
749 | else if (r_type == R_IA64_LTOFF22X) | |
750 | { | |
751 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
752 | R_IA64_GPREL22); | |
753 | changed_relocs = TRUE; | |
754 | if (dyn_i->want_gotx) | |
755 | { | |
756 | dyn_i->want_gotx = 0; | |
757 | changed_got |= !dyn_i->want_got; | |
758 | } | |
759 | ||
760 | elfNN_ia64_update_short_info (tsec->output_section, | |
761 | tsec->output_offset + toff, | |
762 | ia64_info); | |
763 | } | |
764 | else | |
765 | { | |
766 | ia64_elf_relax_ldxmov (contents, roff); | |
767 | irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
768 | changed_contents = TRUE; | |
769 | changed_relocs = TRUE; | |
770 | } | |
771 | } | |
772 | } | |
773 | ||
774 | /* ??? If we created fixups, this may push the code segment large | |
775 | enough that the data segment moves, which will change the GP. | |
776 | Reset the GP so that we re-calculate next round. We need to | |
777 | do this at the _beginning_ of the next round; now will not do. */ | |
778 | ||
779 | /* Clean up and go home. */ | |
780 | while (fixups) | |
781 | { | |
782 | struct one_fixup *f = fixups; | |
783 | fixups = fixups->next; | |
784 | free (f); | |
785 | } | |
786 | ||
787 | if (isymbuf != NULL | |
788 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
789 | { | |
790 | if (! link_info->keep_memory) | |
791 | free (isymbuf); | |
792 | else | |
793 | { | |
794 | /* Cache the symbols for elf_link_input_bfd. */ | |
795 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
796 | } | |
797 | } | |
798 | ||
799 | if (contents != NULL | |
800 | && elf_section_data (sec)->this_hdr.contents != contents) | |
801 | { | |
802 | if (!changed_contents && !link_info->keep_memory) | |
803 | free (contents); | |
804 | else | |
805 | { | |
806 | /* Cache the section contents for elf_link_input_bfd. */ | |
807 | elf_section_data (sec)->this_hdr.contents = contents; | |
808 | } | |
809 | } | |
810 | ||
811 | if (elf_section_data (sec)->relocs != internal_relocs) | |
812 | { | |
813 | if (!changed_relocs) | |
814 | free (internal_relocs); | |
815 | else | |
816 | elf_section_data (sec)->relocs = internal_relocs; | |
817 | } | |
818 | ||
819 | if (changed_got) | |
820 | { | |
821 | struct elfNN_ia64_allocate_data data; | |
822 | data.info = link_info; | |
823 | data.ofs = 0; | |
824 | ia64_info->self_dtpmod_offset = (bfd_vma) -1; | |
825 | ||
826 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); | |
827 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); | |
828 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); | |
829 | ia64_info->root.sgot->size = data.ofs; | |
830 | ||
831 | if (ia64_info->root.dynamic_sections_created | |
832 | && ia64_info->root.srelgot != NULL) | |
833 | { | |
834 | /* Resize .rela.got. */ | |
835 | ia64_info->root.srelgot->size = 0; | |
0e1862bb | 836 | if (bfd_link_pic (link_info) |
cbe79dfe TG |
837 | && ia64_info->self_dtpmod_offset != (bfd_vma) -1) |
838 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
839 | data.only_got = TRUE; | |
840 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, | |
841 | &data); | |
842 | } | |
843 | } | |
844 | ||
845 | if (link_info->relax_pass == 0) | |
846 | { | |
847 | /* Pass 0 is only needed to relax br. */ | |
848 | sec->skip_relax_pass_0 = skip_relax_pass_0; | |
849 | sec->skip_relax_pass_1 = skip_relax_pass_1; | |
850 | } | |
851 | ||
852 | *again = changed_contents || changed_relocs; | |
853 | return TRUE; | |
854 | ||
855 | error_return: | |
856 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) | |
857 | free (isymbuf); | |
858 | if (contents != NULL | |
859 | && elf_section_data (sec)->this_hdr.contents != contents) | |
860 | free (contents); | |
861 | if (internal_relocs != NULL | |
862 | && elf_section_data (sec)->relocs != internal_relocs) | |
863 | free (internal_relocs); | |
864 | return FALSE; | |
865 | } | |
866 | #undef skip_relax_pass_0 | |
867 | #undef skip_relax_pass_1 | |
868 | \f | |
869 | /* Return TRUE if NAME is an unwind table section name. */ | |
870 | ||
871 | static inline bfd_boolean | |
872 | is_unwind_section_name (bfd *abfd, const char *name) | |
873 | { | |
874 | if (elfNN_ia64_hpux_vec (abfd->xvec) | |
875 | && !strcmp (name, ELF_STRING_ia64_unwind_hdr)) | |
876 | return FALSE; | |
877 | ||
878 | return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind) | |
879 | && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info)) | |
880 | || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once)); | |
881 | } | |
882 | ||
883 | /* Handle an IA-64 specific section when reading an object file. This | |
884 | is called when bfd_section_from_shdr finds a section with an unknown | |
885 | type. */ | |
886 | ||
887 | static bfd_boolean | |
888 | elfNN_ia64_section_from_shdr (bfd *abfd, | |
889 | Elf_Internal_Shdr *hdr, | |
890 | const char *name, | |
891 | int shindex) | |
892 | { | |
893 | /* There ought to be a place to keep ELF backend specific flags, but | |
894 | at the moment there isn't one. We just keep track of the | |
895 | sections by their name, instead. Fortunately, the ABI gives | |
896 | suggested names for all the MIPS specific sections, so we will | |
897 | probably get away with this. */ | |
898 | switch (hdr->sh_type) | |
899 | { | |
900 | case SHT_IA_64_UNWIND: | |
901 | case SHT_IA_64_HP_OPT_ANOT: | |
902 | break; | |
903 | ||
904 | case SHT_IA_64_EXT: | |
905 | if (strcmp (name, ELF_STRING_ia64_archext) != 0) | |
906 | return FALSE; | |
907 | break; | |
908 | ||
909 | default: | |
910 | return FALSE; | |
911 | } | |
912 | ||
913 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
914 | return FALSE; | |
915 | ||
916 | return TRUE; | |
917 | } | |
918 | ||
919 | /* Convert IA-64 specific section flags to bfd internal section flags. */ | |
920 | ||
921 | /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV | |
922 | flag. */ | |
923 | ||
924 | static bfd_boolean | |
925 | elfNN_ia64_section_flags (flagword *flags, | |
926 | const Elf_Internal_Shdr *hdr) | |
927 | { | |
928 | if (hdr->sh_flags & SHF_IA_64_SHORT) | |
929 | *flags |= SEC_SMALL_DATA; | |
930 | ||
931 | return TRUE; | |
932 | } | |
933 | ||
934 | /* Set the correct type for an IA-64 ELF section. We do this by the | |
935 | section name, which is a hack, but ought to work. */ | |
936 | ||
937 | static bfd_boolean | |
938 | elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, | |
939 | asection *sec) | |
940 | { | |
941 | const char *name; | |
942 | ||
943 | name = bfd_get_section_name (abfd, sec); | |
944 | ||
945 | if (is_unwind_section_name (abfd, name)) | |
946 | { | |
947 | /* We don't have the sections numbered at this point, so sh_info | |
948 | is set later, in elfNN_ia64_final_write_processing. */ | |
949 | hdr->sh_type = SHT_IA_64_UNWIND; | |
950 | hdr->sh_flags |= SHF_LINK_ORDER; | |
951 | } | |
952 | else if (strcmp (name, ELF_STRING_ia64_archext) == 0) | |
953 | hdr->sh_type = SHT_IA_64_EXT; | |
954 | else if (strcmp (name, ".HP.opt_annot") == 0) | |
955 | hdr->sh_type = SHT_IA_64_HP_OPT_ANOT; | |
956 | else if (strcmp (name, ".reloc") == 0) | |
957 | /* This is an ugly, but unfortunately necessary hack that is | |
958 | needed when producing EFI binaries on IA-64. It tells | |
959 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
960 | containing ELF relocation info. We need this hack in order to | |
961 | be able to generate ELF binaries that can be translated into | |
962 | EFI applications (which are essentially COFF objects). Those | |
963 | files contain a COFF ".reloc" section inside an ELFNN object, | |
964 | which would normally cause BFD to segfault because it would | |
965 | attempt to interpret this section as containing relocation | |
966 | entries for section "oc". With this hack enabled, ".reloc" | |
967 | will be treated as a normal data section, which will avoid the | |
968 | segfault. However, you won't be able to create an ELFNN binary | |
969 | with a section named "oc" that needs relocations, but that's | |
970 | the kind of ugly side-effects you get when detecting section | |
971 | types based on their names... In practice, this limitation is | |
972 | unlikely to bite. */ | |
973 | hdr->sh_type = SHT_PROGBITS; | |
974 | ||
975 | if (sec->flags & SEC_SMALL_DATA) | |
976 | hdr->sh_flags |= SHF_IA_64_SHORT; | |
977 | ||
978 | /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */ | |
979 | ||
980 | if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS)) | |
981 | hdr->sh_flags |= SHF_IA_64_HP_TLS; | |
982 | ||
983 | return TRUE; | |
984 | } | |
985 | ||
986 | /* The final processing done just before writing out an IA-64 ELF | |
987 | object file. */ | |
988 | ||
989 | static void | |
990 | elfNN_ia64_final_write_processing (bfd *abfd, | |
991 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
992 | { | |
993 | Elf_Internal_Shdr *hdr; | |
994 | asection *s; | |
995 | ||
996 | for (s = abfd->sections; s; s = s->next) | |
997 | { | |
998 | hdr = &elf_section_data (s)->this_hdr; | |
999 | switch (hdr->sh_type) | |
1000 | { | |
1001 | case SHT_IA_64_UNWIND: | |
1002 | /* The IA-64 processor-specific ABI requires setting sh_link | |
1003 | to the unwind section, whereas HP-UX requires sh_info to | |
1004 | do so. For maximum compatibility, we'll set both for | |
1005 | now... */ | |
1006 | hdr->sh_info = hdr->sh_link; | |
1007 | break; | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | if (! elf_flags_init (abfd)) | |
1012 | { | |
1013 | unsigned long flags = 0; | |
1014 | ||
1015 | if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) | |
1016 | flags |= EF_IA_64_BE; | |
1017 | if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) | |
1018 | flags |= EF_IA_64_ABI64; | |
1019 | ||
1020 | elf_elfheader(abfd)->e_flags = flags; | |
1021 | elf_flags_init (abfd) = TRUE; | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | /* Hook called by the linker routine which adds symbols from an object | |
1026 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1027 | ||
1028 | static bfd_boolean | |
1029 | elfNN_ia64_add_symbol_hook (bfd *abfd, | |
1030 | struct bfd_link_info *info, | |
1031 | Elf_Internal_Sym *sym, | |
1032 | const char **namep ATTRIBUTE_UNUSED, | |
1033 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1034 | asection **secp, | |
1035 | bfd_vma *valp) | |
1036 | { | |
1037 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 1038 | && !bfd_link_relocatable (info) |
cbe79dfe TG |
1039 | && sym->st_size <= elf_gp_size (abfd)) |
1040 | { | |
1041 | /* Common symbols less than or equal to -G nn bytes are | |
1042 | automatically put into .sbss. */ | |
1043 | ||
1044 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); | |
1045 | ||
1046 | if (scomm == NULL) | |
1047 | { | |
1048 | scomm = bfd_make_section_with_flags (abfd, ".scommon", | |
1049 | (SEC_ALLOC | |
1050 | | SEC_IS_COMMON | |
1051 | | SEC_LINKER_CREATED)); | |
1052 | if (scomm == NULL) | |
1053 | return FALSE; | |
1054 | } | |
1055 | ||
1056 | *secp = scomm; | |
1057 | *valp = sym->st_size; | |
1058 | } | |
1059 | ||
1060 | return TRUE; | |
1061 | } | |
1062 | ||
1063 | /* Return the number of additional phdrs we will need. */ | |
1064 | ||
1065 | static int | |
1066 | elfNN_ia64_additional_program_headers (bfd *abfd, | |
1067 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1068 | { | |
1069 | asection *s; | |
1070 | int ret = 0; | |
1071 | ||
1072 | /* See if we need a PT_IA_64_ARCHEXT segment. */ | |
1073 | s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); | |
1074 | if (s && (s->flags & SEC_LOAD)) | |
1075 | ++ret; | |
1076 | ||
1077 | /* Count how many PT_IA_64_UNWIND segments we need. */ | |
1078 | for (s = abfd->sections; s; s = s->next) | |
1079 | if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD)) | |
1080 | ++ret; | |
1081 | ||
1082 | return ret; | |
1083 | } | |
1084 | ||
1085 | static bfd_boolean | |
1086 | elfNN_ia64_modify_segment_map (bfd *abfd, | |
1087 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1088 | { | |
1089 | struct elf_segment_map *m, **pm; | |
1090 | Elf_Internal_Shdr *hdr; | |
1091 | asection *s; | |
1092 | ||
1093 | /* If we need a PT_IA_64_ARCHEXT segment, it must come before | |
1094 | all PT_LOAD segments. */ | |
1095 | s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); | |
1096 | if (s && (s->flags & SEC_LOAD)) | |
1097 | { | |
12bd6957 | 1098 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
cbe79dfe TG |
1099 | if (m->p_type == PT_IA_64_ARCHEXT) |
1100 | break; | |
1101 | if (m == NULL) | |
1102 | { | |
1103 | m = ((struct elf_segment_map *) | |
1104 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
1105 | if (m == NULL) | |
1106 | return FALSE; | |
1107 | ||
1108 | m->p_type = PT_IA_64_ARCHEXT; | |
1109 | m->count = 1; | |
1110 | m->sections[0] = s; | |
1111 | ||
1112 | /* We want to put it after the PHDR and INTERP segments. */ | |
12bd6957 | 1113 | pm = &elf_seg_map (abfd); |
cbe79dfe TG |
1114 | while (*pm != NULL |
1115 | && ((*pm)->p_type == PT_PHDR | |
1116 | || (*pm)->p_type == PT_INTERP)) | |
1117 | pm = &(*pm)->next; | |
1118 | ||
1119 | m->next = *pm; | |
1120 | *pm = m; | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | /* Install PT_IA_64_UNWIND segments, if needed. */ | |
1125 | for (s = abfd->sections; s; s = s->next) | |
1126 | { | |
1127 | hdr = &elf_section_data (s)->this_hdr; | |
1128 | if (hdr->sh_type != SHT_IA_64_UNWIND) | |
1129 | continue; | |
1130 | ||
1131 | if (s && (s->flags & SEC_LOAD)) | |
1132 | { | |
12bd6957 | 1133 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
cbe79dfe TG |
1134 | if (m->p_type == PT_IA_64_UNWIND) |
1135 | { | |
1136 | int i; | |
1137 | ||
1138 | /* Look through all sections in the unwind segment | |
1139 | for a match since there may be multiple sections | |
1140 | to a segment. */ | |
1141 | for (i = m->count - 1; i >= 0; --i) | |
1142 | if (m->sections[i] == s) | |
1143 | break; | |
1144 | ||
1145 | if (i >= 0) | |
1146 | break; | |
1147 | } | |
1148 | ||
1149 | if (m == NULL) | |
1150 | { | |
1151 | m = ((struct elf_segment_map *) | |
1152 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
1153 | if (m == NULL) | |
1154 | return FALSE; | |
1155 | ||
1156 | m->p_type = PT_IA_64_UNWIND; | |
1157 | m->count = 1; | |
1158 | m->sections[0] = s; | |
1159 | m->next = NULL; | |
1160 | ||
1161 | /* We want to put it last. */ | |
12bd6957 | 1162 | pm = &elf_seg_map (abfd); |
cbe79dfe TG |
1163 | while (*pm != NULL) |
1164 | pm = &(*pm)->next; | |
1165 | *pm = m; | |
1166 | } | |
1167 | } | |
1168 | } | |
1169 | ||
1170 | return TRUE; | |
1171 | } | |
1172 | ||
1173 | /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of | |
1174 | the input sections for each output section in the segment and testing | |
1175 | for SHF_IA_64_NORECOV on each. */ | |
1176 | ||
1177 | static bfd_boolean | |
1178 | elfNN_ia64_modify_program_headers (bfd *abfd, | |
1179 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1180 | { | |
1181 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
1182 | struct elf_segment_map *m; | |
1183 | Elf_Internal_Phdr *p; | |
1184 | ||
12bd6957 | 1185 | for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++) |
cbe79dfe TG |
1186 | if (m->p_type == PT_LOAD) |
1187 | { | |
1188 | int i; | |
1189 | for (i = m->count - 1; i >= 0; --i) | |
1190 | { | |
1191 | struct bfd_link_order *order = m->sections[i]->map_head.link_order; | |
1192 | ||
1193 | while (order != NULL) | |
1194 | { | |
1195 | if (order->type == bfd_indirect_link_order) | |
1196 | { | |
1197 | asection *is = order->u.indirect.section; | |
1198 | bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags; | |
1199 | if (flags & SHF_IA_64_NORECOV) | |
1200 | { | |
1201 | p->p_flags |= PF_IA_64_NORECOV; | |
1202 | goto found; | |
1203 | } | |
1204 | } | |
1205 | order = order->next; | |
1206 | } | |
1207 | } | |
1208 | found:; | |
1209 | } | |
1210 | ||
1211 | return TRUE; | |
1212 | } | |
1213 | ||
1214 | /* According to the Tahoe assembler spec, all labels starting with a | |
1215 | '.' are local. */ | |
1216 | ||
1217 | static bfd_boolean | |
1218 | elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, | |
1219 | const char *name) | |
1220 | { | |
1221 | return name[0] == '.'; | |
1222 | } | |
1223 | ||
1224 | /* Should we do dynamic things to this symbol? */ | |
1225 | ||
1226 | static bfd_boolean | |
1227 | elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h, | |
1228 | struct bfd_link_info *info, int r_type) | |
1229 | { | |
1230 | bfd_boolean ignore_protected | |
1231 | = ((r_type & 0xf8) == 0x40 /* FPTR relocs */ | |
1232 | || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */ | |
1233 | ||
1234 | return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected); | |
1235 | } | |
1236 | \f | |
1237 | static struct bfd_hash_entry* | |
1238 | elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry, | |
1239 | struct bfd_hash_table *table, | |
1240 | const char *string) | |
1241 | { | |
1242 | struct elfNN_ia64_link_hash_entry *ret; | |
1243 | ret = (struct elfNN_ia64_link_hash_entry *) entry; | |
1244 | ||
1245 | /* Allocate the structure if it has not already been allocated by a | |
1246 | subclass. */ | |
1247 | if (!ret) | |
1248 | ret = bfd_hash_allocate (table, sizeof (*ret)); | |
1249 | ||
1250 | if (!ret) | |
1251 | return 0; | |
1252 | ||
1253 | /* Call the allocation method of the superclass. */ | |
1254 | ret = ((struct elfNN_ia64_link_hash_entry *) | |
1255 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1256 | table, string)); | |
1257 | ||
1258 | ret->info = NULL; | |
1259 | ret->count = 0; | |
1260 | ret->sorted_count = 0; | |
1261 | ret->size = 0; | |
1262 | return (struct bfd_hash_entry *) ret; | |
1263 | } | |
1264 | ||
1265 | static void | |
1266 | elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info, | |
1267 | struct elf_link_hash_entry *xdir, | |
1268 | struct elf_link_hash_entry *xind) | |
1269 | { | |
1270 | struct elfNN_ia64_link_hash_entry *dir, *ind; | |
1271 | ||
1272 | dir = (struct elfNN_ia64_link_hash_entry *) xdir; | |
1273 | ind = (struct elfNN_ia64_link_hash_entry *) xind; | |
1274 | ||
1275 | /* Copy down any references that we may have already seen to the | |
1276 | symbol which just became indirect. */ | |
1277 | ||
e81830c5 AM |
1278 | if (dir->root.versioned != versioned_hidden) |
1279 | dir->root.ref_dynamic |= ind->root.ref_dynamic; | |
cbe79dfe TG |
1280 | dir->root.ref_regular |= ind->root.ref_regular; |
1281 | dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak; | |
1282 | dir->root.needs_plt |= ind->root.needs_plt; | |
1283 | ||
1284 | if (ind->root.root.type != bfd_link_hash_indirect) | |
1285 | return; | |
1286 | ||
1287 | /* Copy over the got and plt data. This would have been done | |
1288 | by check_relocs. */ | |
1289 | ||
1290 | if (ind->info != NULL) | |
1291 | { | |
1292 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1293 | unsigned int count; | |
1294 | ||
1295 | if (dir->info) | |
1296 | free (dir->info); | |
1297 | ||
1298 | dir->info = ind->info; | |
1299 | dir->count = ind->count; | |
1300 | dir->sorted_count = ind->sorted_count; | |
1301 | dir->size = ind->size; | |
1302 | ||
1303 | ind->info = NULL; | |
1304 | ind->count = 0; | |
1305 | ind->sorted_count = 0; | |
1306 | ind->size = 0; | |
1307 | ||
1308 | /* Fix up the dyn_sym_info pointers to the global symbol. */ | |
1309 | for (count = dir->count, dyn_i = dir->info; | |
1310 | count != 0; | |
1311 | count--, dyn_i++) | |
1312 | dyn_i->h = &dir->root; | |
1313 | } | |
1314 | ||
1315 | /* Copy over the dynindx. */ | |
1316 | ||
1317 | if (ind->root.dynindx != -1) | |
1318 | { | |
1319 | if (dir->root.dynindx != -1) | |
1320 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1321 | dir->root.dynstr_index); | |
1322 | dir->root.dynindx = ind->root.dynindx; | |
1323 | dir->root.dynstr_index = ind->root.dynstr_index; | |
1324 | ind->root.dynindx = -1; | |
1325 | ind->root.dynstr_index = 0; | |
1326 | } | |
1327 | } | |
1328 | ||
1329 | static void | |
1330 | elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info, | |
1331 | struct elf_link_hash_entry *xh, | |
1332 | bfd_boolean force_local) | |
1333 | { | |
1334 | struct elfNN_ia64_link_hash_entry *h; | |
1335 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1336 | unsigned int count; | |
1337 | ||
1338 | h = (struct elfNN_ia64_link_hash_entry *)xh; | |
1339 | ||
1340 | _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); | |
1341 | ||
1342 | for (count = h->count, dyn_i = h->info; | |
1343 | count != 0; | |
1344 | count--, dyn_i++) | |
1345 | { | |
1346 | dyn_i->want_plt2 = 0; | |
1347 | dyn_i->want_plt = 0; | |
1348 | } | |
1349 | } | |
1350 | ||
1351 | /* Compute a hash of a local hash entry. */ | |
1352 | ||
1353 | static hashval_t | |
1354 | elfNN_ia64_local_htab_hash (const void *ptr) | |
1355 | { | |
1356 | struct elfNN_ia64_local_hash_entry *entry | |
1357 | = (struct elfNN_ia64_local_hash_entry *) ptr; | |
1358 | ||
1359 | return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym); | |
1360 | } | |
1361 | ||
1362 | /* Compare local hash entries. */ | |
1363 | ||
1364 | static int | |
1365 | elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2) | |
1366 | { | |
1367 | struct elfNN_ia64_local_hash_entry *entry1 | |
1368 | = (struct elfNN_ia64_local_hash_entry *) ptr1; | |
1369 | struct elfNN_ia64_local_hash_entry *entry2 | |
1370 | = (struct elfNN_ia64_local_hash_entry *) ptr2; | |
1371 | ||
1372 | return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym; | |
1373 | } | |
1374 | ||
cbe79dfe TG |
1375 | /* Free the global elfNN_ia64_dyn_sym_info array. */ |
1376 | ||
1377 | static bfd_boolean | |
1378 | elfNN_ia64_global_dyn_info_free (void **xentry, | |
2c3fc389 | 1379 | void * unused ATTRIBUTE_UNUSED) |
cbe79dfe TG |
1380 | { |
1381 | struct elfNN_ia64_link_hash_entry *entry | |
1382 | = (struct elfNN_ia64_link_hash_entry *) xentry; | |
1383 | ||
cbe79dfe TG |
1384 | if (entry->info) |
1385 | { | |
1386 | free (entry->info); | |
1387 | entry->info = NULL; | |
1388 | entry->count = 0; | |
1389 | entry->sorted_count = 0; | |
1390 | entry->size = 0; | |
1391 | } | |
1392 | ||
1393 | return TRUE; | |
1394 | } | |
1395 | ||
1396 | /* Free the local elfNN_ia64_dyn_sym_info array. */ | |
1397 | ||
1398 | static bfd_boolean | |
1399 | elfNN_ia64_local_dyn_info_free (void **slot, | |
2c3fc389 | 1400 | void * unused ATTRIBUTE_UNUSED) |
cbe79dfe TG |
1401 | { |
1402 | struct elfNN_ia64_local_hash_entry *entry | |
1403 | = (struct elfNN_ia64_local_hash_entry *) *slot; | |
1404 | ||
1405 | if (entry->info) | |
1406 | { | |
1407 | free (entry->info); | |
1408 | entry->info = NULL; | |
1409 | entry->count = 0; | |
1410 | entry->sorted_count = 0; | |
1411 | entry->size = 0; | |
1412 | } | |
1413 | ||
1414 | return TRUE; | |
1415 | } | |
1416 | ||
1417 | /* Destroy IA-64 linker hash table. */ | |
1418 | ||
1419 | static void | |
d495ab0d | 1420 | elfNN_ia64_link_hash_table_free (bfd *obfd) |
cbe79dfe TG |
1421 | { |
1422 | struct elfNN_ia64_link_hash_table *ia64_info | |
d495ab0d | 1423 | = (struct elfNN_ia64_link_hash_table *) obfd->link.hash; |
cbe79dfe TG |
1424 | if (ia64_info->loc_hash_table) |
1425 | { | |
1426 | htab_traverse (ia64_info->loc_hash_table, | |
1427 | elfNN_ia64_local_dyn_info_free, NULL); | |
1428 | htab_delete (ia64_info->loc_hash_table); | |
1429 | } | |
1430 | if (ia64_info->loc_hash_memory) | |
1431 | objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory); | |
1432 | elf_link_hash_traverse (&ia64_info->root, | |
1433 | elfNN_ia64_global_dyn_info_free, NULL); | |
d495ab0d | 1434 | _bfd_elf_link_hash_table_free (obfd); |
cbe79dfe TG |
1435 | } |
1436 | ||
68faa637 AM |
1437 | /* Create the derived linker hash table. The IA-64 ELF port uses this |
1438 | derived hash table to keep information specific to the IA-64 ElF | |
1439 | linker (without using static variables). */ | |
1440 | ||
1441 | static struct bfd_link_hash_table * | |
1442 | elfNN_ia64_hash_table_create (bfd *abfd) | |
1443 | { | |
1444 | struct elfNN_ia64_link_hash_table *ret; | |
1445 | ||
1446 | ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret)); | |
1447 | if (!ret) | |
1448 | return NULL; | |
1449 | ||
1450 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
1451 | elfNN_ia64_new_elf_hash_entry, | |
1452 | sizeof (struct elfNN_ia64_link_hash_entry), | |
1453 | IA64_ELF_DATA)) | |
1454 | { | |
1455 | free (ret); | |
1456 | return NULL; | |
1457 | } | |
1458 | ||
1459 | ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash, | |
1460 | elfNN_ia64_local_htab_eq, NULL); | |
1461 | ret->loc_hash_memory = objalloc_create (); | |
1462 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
1463 | { | |
d495ab0d | 1464 | elfNN_ia64_link_hash_table_free (abfd); |
68faa637 AM |
1465 | return NULL; |
1466 | } | |
d495ab0d | 1467 | ret->root.root.hash_table_free = elfNN_ia64_link_hash_table_free; |
68faa637 AM |
1468 | |
1469 | return &ret->root.root; | |
1470 | } | |
1471 | ||
cbe79dfe TG |
1472 | /* Traverse both local and global hash tables. */ |
1473 | ||
1474 | struct elfNN_ia64_dyn_sym_traverse_data | |
1475 | { | |
2c3fc389 NC |
1476 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *); |
1477 | void * data; | |
cbe79dfe TG |
1478 | }; |
1479 | ||
1480 | static bfd_boolean | |
1481 | elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry, | |
2c3fc389 | 1482 | void * xdata) |
cbe79dfe TG |
1483 | { |
1484 | struct elfNN_ia64_link_hash_entry *entry | |
1485 | = (struct elfNN_ia64_link_hash_entry *) xentry; | |
1486 | struct elfNN_ia64_dyn_sym_traverse_data *data | |
1487 | = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; | |
1488 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1489 | unsigned int count; | |
1490 | ||
cbe79dfe TG |
1491 | for (count = entry->count, dyn_i = entry->info; |
1492 | count != 0; | |
1493 | count--, dyn_i++) | |
1494 | if (! (*data->func) (dyn_i, data->data)) | |
1495 | return FALSE; | |
1496 | return TRUE; | |
1497 | } | |
1498 | ||
1499 | static bfd_boolean | |
2c3fc389 | 1500 | elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata) |
cbe79dfe TG |
1501 | { |
1502 | struct elfNN_ia64_local_hash_entry *entry | |
1503 | = (struct elfNN_ia64_local_hash_entry *) *slot; | |
1504 | struct elfNN_ia64_dyn_sym_traverse_data *data | |
1505 | = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; | |
1506 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1507 | unsigned int count; | |
1508 | ||
1509 | for (count = entry->count, dyn_i = entry->info; | |
1510 | count != 0; | |
1511 | count--, dyn_i++) | |
1512 | if (! (*data->func) (dyn_i, data->data)) | |
1513 | return FALSE; | |
1514 | return TRUE; | |
1515 | } | |
1516 | ||
1517 | static void | |
1518 | elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info, | |
2c3fc389 NC |
1519 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *), |
1520 | void * data) | |
cbe79dfe TG |
1521 | { |
1522 | struct elfNN_ia64_dyn_sym_traverse_data xdata; | |
1523 | ||
1524 | xdata.func = func; | |
1525 | xdata.data = data; | |
1526 | ||
1527 | elf_link_hash_traverse (&ia64_info->root, | |
1528 | elfNN_ia64_global_dyn_sym_thunk, &xdata); | |
1529 | htab_traverse (ia64_info->loc_hash_table, | |
1530 | elfNN_ia64_local_dyn_sym_thunk, &xdata); | |
1531 | } | |
1532 | \f | |
1533 | static bfd_boolean | |
1534 | elfNN_ia64_create_dynamic_sections (bfd *abfd, | |
1535 | struct bfd_link_info *info) | |
1536 | { | |
1537 | struct elfNN_ia64_link_hash_table *ia64_info; | |
1538 | asection *s; | |
1539 | ||
1540 | if (! _bfd_elf_create_dynamic_sections (abfd, info)) | |
1541 | return FALSE; | |
1542 | ||
1543 | ia64_info = elfNN_ia64_hash_table (info); | |
1544 | if (ia64_info == NULL) | |
1545 | return FALSE; | |
1546 | ||
1547 | { | |
1548 | flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot); | |
1549 | bfd_set_section_flags (abfd, ia64_info->root.sgot, | |
1550 | SEC_SMALL_DATA | flags); | |
1551 | /* The .got section is always aligned at 8 bytes. */ | |
a253d456 NC |
1552 | if (! bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3)) |
1553 | return FALSE; | |
cbe79dfe TG |
1554 | } |
1555 | ||
1556 | if (!get_pltoff (abfd, info, ia64_info)) | |
1557 | return FALSE; | |
1558 | ||
3d4d4302 AM |
1559 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff", |
1560 | (SEC_ALLOC | SEC_LOAD | |
1561 | | SEC_HAS_CONTENTS | |
1562 | | SEC_IN_MEMORY | |
1563 | | SEC_LINKER_CREATED | |
1564 | | SEC_READONLY)); | |
cbe79dfe TG |
1565 | if (s == NULL |
1566 | || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN)) | |
1567 | return FALSE; | |
1568 | ia64_info->rel_pltoff_sec = s; | |
1569 | ||
1570 | return TRUE; | |
1571 | } | |
1572 | ||
1573 | /* Find and/or create a hash entry for local symbol. */ | |
1574 | static struct elfNN_ia64_local_hash_entry * | |
1575 | get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info, | |
1576 | bfd *abfd, const Elf_Internal_Rela *rel, | |
1577 | bfd_boolean create) | |
1578 | { | |
1579 | struct elfNN_ia64_local_hash_entry e, *ret; | |
1580 | asection *sec = abfd->sections; | |
1581 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
1582 | ELFNN_R_SYM (rel->r_info)); | |
1583 | void **slot; | |
1584 | ||
1585 | e.id = sec->id; | |
1586 | e.r_sym = ELFNN_R_SYM (rel->r_info); | |
1587 | slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h, | |
1588 | create ? INSERT : NO_INSERT); | |
1589 | ||
1590 | if (!slot) | |
1591 | return NULL; | |
1592 | ||
1593 | if (*slot) | |
1594 | return (struct elfNN_ia64_local_hash_entry *) *slot; | |
1595 | ||
1596 | ret = (struct elfNN_ia64_local_hash_entry *) | |
1597 | objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory, | |
1598 | sizeof (struct elfNN_ia64_local_hash_entry)); | |
1599 | if (ret) | |
1600 | { | |
1601 | memset (ret, 0, sizeof (*ret)); | |
1602 | ret->id = sec->id; | |
1603 | ret->r_sym = ELFNN_R_SYM (rel->r_info); | |
1604 | *slot = ret; | |
1605 | } | |
1606 | return ret; | |
1607 | } | |
1608 | ||
1609 | /* Used to sort elfNN_ia64_dyn_sym_info array. */ | |
1610 | ||
1611 | static int | |
1612 | addend_compare (const void *xp, const void *yp) | |
1613 | { | |
1614 | const struct elfNN_ia64_dyn_sym_info *x | |
1615 | = (const struct elfNN_ia64_dyn_sym_info *) xp; | |
1616 | const struct elfNN_ia64_dyn_sym_info *y | |
1617 | = (const struct elfNN_ia64_dyn_sym_info *) yp; | |
1618 | ||
1619 | return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0; | |
1620 | } | |
1621 | ||
1622 | /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */ | |
1623 | ||
1624 | static unsigned int | |
1625 | sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info, | |
1626 | unsigned int count) | |
1627 | { | |
1628 | bfd_vma curr, prev, got_offset; | |
1629 | unsigned int i, kept, dupes, diff, dest, src, len; | |
1630 | ||
1631 | qsort (info, count, sizeof (*info), addend_compare); | |
1632 | ||
1633 | /* Find the first duplicate. */ | |
1634 | prev = info [0].addend; | |
1635 | got_offset = info [0].got_offset; | |
1636 | for (i = 1; i < count; i++) | |
1637 | { | |
1638 | curr = info [i].addend; | |
1639 | if (curr == prev) | |
1640 | { | |
1641 | /* For duplicates, make sure that GOT_OFFSET is valid. */ | |
1642 | if (got_offset == (bfd_vma) -1) | |
1643 | got_offset = info [i].got_offset; | |
1644 | break; | |
1645 | } | |
1646 | got_offset = info [i].got_offset; | |
1647 | prev = curr; | |
1648 | } | |
1649 | ||
1650 | /* We may move a block of elements to here. */ | |
1651 | dest = i++; | |
1652 | ||
1653 | /* Remove duplicates. */ | |
1654 | if (i < count) | |
1655 | { | |
1656 | while (i < count) | |
1657 | { | |
1658 | /* For duplicates, make sure that the kept one has a valid | |
1659 | got_offset. */ | |
1660 | kept = dest - 1; | |
1661 | if (got_offset != (bfd_vma) -1) | |
1662 | info [kept].got_offset = got_offset; | |
1663 | ||
1664 | curr = info [i].addend; | |
1665 | got_offset = info [i].got_offset; | |
1666 | ||
1667 | /* Move a block of elements whose first one is different from | |
1668 | the previous. */ | |
1669 | if (curr == prev) | |
1670 | { | |
1671 | for (src = i + 1; src < count; src++) | |
1672 | { | |
1673 | if (info [src].addend != curr) | |
1674 | break; | |
1675 | /* For duplicates, make sure that GOT_OFFSET is | |
1676 | valid. */ | |
1677 | if (got_offset == (bfd_vma) -1) | |
1678 | got_offset = info [src].got_offset; | |
1679 | } | |
1680 | ||
1681 | /* Make sure that the kept one has a valid got_offset. */ | |
1682 | if (got_offset != (bfd_vma) -1) | |
1683 | info [kept].got_offset = got_offset; | |
1684 | } | |
1685 | else | |
1686 | src = i; | |
1687 | ||
1688 | if (src >= count) | |
1689 | break; | |
1690 | ||
1691 | /* Find the next duplicate. SRC will be kept. */ | |
1692 | prev = info [src].addend; | |
1693 | got_offset = info [src].got_offset; | |
1694 | for (dupes = src + 1; dupes < count; dupes ++) | |
1695 | { | |
1696 | curr = info [dupes].addend; | |
1697 | if (curr == prev) | |
1698 | { | |
1699 | /* Make sure that got_offset is valid. */ | |
1700 | if (got_offset == (bfd_vma) -1) | |
1701 | got_offset = info [dupes].got_offset; | |
1702 | ||
1703 | /* For duplicates, make sure that the kept one has | |
1704 | a valid got_offset. */ | |
1705 | if (got_offset != (bfd_vma) -1) | |
1706 | info [dupes - 1].got_offset = got_offset; | |
1707 | break; | |
1708 | } | |
1709 | got_offset = info [dupes].got_offset; | |
1710 | prev = curr; | |
1711 | } | |
1712 | ||
1713 | /* How much to move. */ | |
1714 | len = dupes - src; | |
1715 | i = dupes + 1; | |
1716 | ||
1717 | if (len == 1 && dupes < count) | |
1718 | { | |
1719 | /* If we only move 1 element, we combine it with the next | |
1720 | one. There must be at least a duplicate. Find the | |
1721 | next different one. */ | |
1722 | for (diff = dupes + 1, src++; diff < count; diff++, src++) | |
1723 | { | |
1724 | if (info [diff].addend != curr) | |
1725 | break; | |
1726 | /* Make sure that got_offset is valid. */ | |
1727 | if (got_offset == (bfd_vma) -1) | |
1728 | got_offset = info [diff].got_offset; | |
1729 | } | |
1730 | ||
1731 | /* Makre sure that the last duplicated one has an valid | |
1732 | offset. */ | |
1733 | BFD_ASSERT (curr == prev); | |
1734 | if (got_offset != (bfd_vma) -1) | |
1735 | info [diff - 1].got_offset = got_offset; | |
1736 | ||
1737 | if (diff < count) | |
1738 | { | |
1739 | /* Find the next duplicate. Track the current valid | |
1740 | offset. */ | |
1741 | prev = info [diff].addend; | |
1742 | got_offset = info [diff].got_offset; | |
1743 | for (dupes = diff + 1; dupes < count; dupes ++) | |
1744 | { | |
1745 | curr = info [dupes].addend; | |
1746 | if (curr == prev) | |
1747 | { | |
1748 | /* For duplicates, make sure that GOT_OFFSET | |
1749 | is valid. */ | |
1750 | if (got_offset == (bfd_vma) -1) | |
1751 | got_offset = info [dupes].got_offset; | |
1752 | break; | |
1753 | } | |
1754 | got_offset = info [dupes].got_offset; | |
1755 | prev = curr; | |
1756 | diff++; | |
1757 | } | |
1758 | ||
1759 | len = diff - src + 1; | |
1760 | i = diff + 1; | |
1761 | } | |
1762 | } | |
1763 | ||
1764 | memmove (&info [dest], &info [src], len * sizeof (*info)); | |
1765 | ||
1766 | dest += len; | |
1767 | } | |
1768 | ||
1769 | count = dest; | |
1770 | } | |
1771 | else | |
1772 | { | |
1773 | /* When we get here, either there is no duplicate at all or | |
1774 | the only duplicate is the last element. */ | |
1775 | if (dest < count) | |
1776 | { | |
1777 | /* If the last element is a duplicate, make sure that the | |
1778 | kept one has a valid got_offset. We also update count. */ | |
1779 | if (got_offset != (bfd_vma) -1) | |
1780 | info [dest - 1].got_offset = got_offset; | |
1781 | count = dest; | |
1782 | } | |
1783 | } | |
1784 | ||
1785 | return count; | |
1786 | } | |
1787 | ||
1788 | /* Find and/or create a descriptor for dynamic symbol info. This will | |
1789 | vary based on global or local symbol, and the addend to the reloc. | |
1790 | ||
1791 | We don't sort when inserting. Also, we sort and eliminate | |
1792 | duplicates if there is an unsorted section. Typically, this will | |
1793 | only happen once, because we do all insertions before lookups. We | |
1794 | then use bsearch to do a lookup. This also allows lookups to be | |
1795 | fast. So we have fast insertion (O(log N) due to duplicate check), | |
1796 | fast lookup (O(log N)) and one sort (O(N log N) expected time). | |
1797 | Previously, all lookups were O(N) because of the use of the linked | |
1798 | list and also all insertions were O(N) because of the check for | |
1799 | duplicates. There are some complications here because the array | |
1800 | size grows occasionally, which may add an O(N) factor, but this | |
1801 | should be rare. Also, we free the excess array allocation, which | |
1802 | requires a copy which is O(N), but this only happens once. */ | |
1803 | ||
1804 | static struct elfNN_ia64_dyn_sym_info * | |
1805 | get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info, | |
1806 | struct elf_link_hash_entry *h, bfd *abfd, | |
1807 | const Elf_Internal_Rela *rel, bfd_boolean create) | |
1808 | { | |
1809 | struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key; | |
1810 | unsigned int *count_p, *sorted_count_p, *size_p; | |
1811 | unsigned int count, sorted_count, size; | |
1812 | bfd_vma addend = rel ? rel->r_addend : 0; | |
1813 | bfd_size_type amt; | |
1814 | ||
1815 | if (h) | |
1816 | { | |
1817 | struct elfNN_ia64_link_hash_entry *global_h; | |
1818 | ||
1819 | global_h = (struct elfNN_ia64_link_hash_entry *) h; | |
1820 | info_p = &global_h->info; | |
1821 | count_p = &global_h->count; | |
1822 | sorted_count_p = &global_h->sorted_count; | |
1823 | size_p = &global_h->size; | |
1824 | } | |
1825 | else | |
1826 | { | |
1827 | struct elfNN_ia64_local_hash_entry *loc_h; | |
1828 | ||
1829 | loc_h = get_local_sym_hash (ia64_info, abfd, rel, create); | |
1830 | if (!loc_h) | |
1831 | { | |
1832 | BFD_ASSERT (!create); | |
1833 | return NULL; | |
1834 | } | |
1835 | ||
1836 | info_p = &loc_h->info; | |
1837 | count_p = &loc_h->count; | |
1838 | sorted_count_p = &loc_h->sorted_count; | |
1839 | size_p = &loc_h->size; | |
1840 | } | |
1841 | ||
1842 | count = *count_p; | |
1843 | sorted_count = *sorted_count_p; | |
1844 | size = *size_p; | |
1845 | info = *info_p; | |
1846 | if (create) | |
1847 | { | |
1848 | /* When we create the array, we don't check for duplicates, | |
1849 | except in the previously sorted section if one exists, and | |
1850 | against the last inserted entry. This allows insertions to | |
1851 | be fast. */ | |
1852 | if (info) | |
1853 | { | |
1854 | if (sorted_count) | |
1855 | { | |
1856 | /* Try bsearch first on the sorted section. */ | |
1857 | key.addend = addend; | |
1858 | dyn_i = bsearch (&key, info, sorted_count, | |
1859 | sizeof (*info), addend_compare); | |
1860 | ||
1861 | if (dyn_i) | |
1862 | { | |
1863 | return dyn_i; | |
1864 | } | |
1865 | } | |
1866 | ||
1867 | /* Do a quick check for the last inserted entry. */ | |
1868 | dyn_i = info + count - 1; | |
1869 | if (dyn_i->addend == addend) | |
1870 | { | |
1871 | return dyn_i; | |
1872 | } | |
1873 | } | |
1874 | ||
1875 | if (size == 0) | |
1876 | { | |
1877 | /* It is the very first element. We create the array of size | |
1878 | 1. */ | |
1879 | size = 1; | |
1880 | amt = size * sizeof (*info); | |
1881 | info = bfd_malloc (amt); | |
1882 | } | |
1883 | else if (size <= count) | |
1884 | { | |
1885 | /* We double the array size every time when we reach the | |
1886 | size limit. */ | |
1887 | size += size; | |
1888 | amt = size * sizeof (*info); | |
1889 | info = bfd_realloc (info, amt); | |
1890 | } | |
1891 | else | |
1892 | goto has_space; | |
1893 | ||
1894 | if (info == NULL) | |
1895 | return NULL; | |
1896 | *size_p = size; | |
1897 | *info_p = info; | |
1898 | ||
1899 | has_space: | |
1900 | /* Append the new one to the array. */ | |
1901 | dyn_i = info + count; | |
1902 | memset (dyn_i, 0, sizeof (*dyn_i)); | |
1903 | dyn_i->got_offset = (bfd_vma) -1; | |
1904 | dyn_i->addend = addend; | |
1905 | ||
1906 | /* We increment count only since the new ones are unsorted and | |
1907 | may have duplicate. */ | |
1908 | (*count_p)++; | |
1909 | } | |
1910 | else | |
1911 | { | |
1912 | /* It is a lookup without insertion. Sort array if part of the | |
1913 | array isn't sorted. */ | |
1914 | if (count != sorted_count) | |
1915 | { | |
1916 | count = sort_dyn_sym_info (info, count); | |
1917 | *count_p = count; | |
1918 | *sorted_count_p = count; | |
1919 | } | |
1920 | ||
1921 | /* Free unused memory. */ | |
1922 | if (size != count) | |
1923 | { | |
1924 | amt = count * sizeof (*info); | |
1925 | info = bfd_malloc (amt); | |
1926 | if (info != NULL) | |
1927 | { | |
1928 | memcpy (info, *info_p, amt); | |
1929 | free (*info_p); | |
1930 | *size_p = count; | |
1931 | *info_p = info; | |
1932 | } | |
1933 | } | |
1934 | ||
1935 | key.addend = addend; | |
1936 | dyn_i = bsearch (&key, info, count, | |
1937 | sizeof (*info), addend_compare); | |
1938 | } | |
1939 | ||
1940 | return dyn_i; | |
1941 | } | |
1942 | ||
1943 | static asection * | |
1944 | get_got (bfd *abfd, struct bfd_link_info *info, | |
1945 | struct elfNN_ia64_link_hash_table *ia64_info) | |
1946 | { | |
1947 | asection *got; | |
1948 | bfd *dynobj; | |
1949 | ||
1950 | got = ia64_info->root.sgot; | |
1951 | if (!got) | |
1952 | { | |
1953 | flagword flags; | |
1954 | ||
1955 | dynobj = ia64_info->root.dynobj; | |
1956 | if (!dynobj) | |
1957 | ia64_info->root.dynobj = dynobj = abfd; | |
1958 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
a253d456 | 1959 | return NULL; |
cbe79dfe TG |
1960 | |
1961 | got = ia64_info->root.sgot; | |
1962 | ||
1963 | /* The .got section is always aligned at 8 bytes. */ | |
1964 | if (!bfd_set_section_alignment (abfd, got, 3)) | |
a253d456 | 1965 | return NULL; |
cbe79dfe TG |
1966 | |
1967 | flags = bfd_get_section_flags (abfd, got); | |
a253d456 NC |
1968 | if (! bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags)) |
1969 | return NULL; | |
cbe79dfe TG |
1970 | } |
1971 | ||
1972 | return got; | |
1973 | } | |
1974 | ||
1975 | /* Create function descriptor section (.opd). This section is called .opd | |
1976 | because it contains "official procedure descriptors". The "official" | |
1977 | refers to the fact that these descriptors are used when taking the address | |
1978 | of a procedure, thus ensuring a unique address for each procedure. */ | |
1979 | ||
1980 | static asection * | |
1981 | get_fptr (bfd *abfd, struct bfd_link_info *info, | |
1982 | struct elfNN_ia64_link_hash_table *ia64_info) | |
1983 | { | |
1984 | asection *fptr; | |
1985 | bfd *dynobj; | |
1986 | ||
1987 | fptr = ia64_info->fptr_sec; | |
1988 | if (!fptr) | |
1989 | { | |
1990 | dynobj = ia64_info->root.dynobj; | |
1991 | if (!dynobj) | |
1992 | ia64_info->root.dynobj = dynobj = abfd; | |
1993 | ||
3d4d4302 AM |
1994 | fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd", |
1995 | (SEC_ALLOC | |
1996 | | SEC_LOAD | |
1997 | | SEC_HAS_CONTENTS | |
1998 | | SEC_IN_MEMORY | |
0e1862bb L |
1999 | | (bfd_link_pie (info) |
2000 | ? 0 : SEC_READONLY) | |
3d4d4302 | 2001 | | SEC_LINKER_CREATED)); |
cbe79dfe TG |
2002 | if (!fptr |
2003 | || !bfd_set_section_alignment (abfd, fptr, 4)) | |
2004 | { | |
2005 | BFD_ASSERT (0); | |
2006 | return NULL; | |
2007 | } | |
2008 | ||
2009 | ia64_info->fptr_sec = fptr; | |
2010 | ||
0e1862bb | 2011 | if (bfd_link_pie (info)) |
cbe79dfe TG |
2012 | { |
2013 | asection *fptr_rel; | |
3d4d4302 AM |
2014 | fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd", |
2015 | (SEC_ALLOC | SEC_LOAD | |
2016 | | SEC_HAS_CONTENTS | |
2017 | | SEC_IN_MEMORY | |
2018 | | SEC_LINKER_CREATED | |
2019 | | SEC_READONLY)); | |
cbe79dfe TG |
2020 | if (fptr_rel == NULL |
2021 | || !bfd_set_section_alignment (abfd, fptr_rel, | |
2022 | LOG_SECTION_ALIGN)) | |
2023 | { | |
2024 | BFD_ASSERT (0); | |
2025 | return NULL; | |
2026 | } | |
2027 | ||
2028 | ia64_info->rel_fptr_sec = fptr_rel; | |
2029 | } | |
2030 | } | |
2031 | ||
2032 | return fptr; | |
2033 | } | |
2034 | ||
2035 | static asection * | |
2036 | get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2037 | struct elfNN_ia64_link_hash_table *ia64_info) | |
2038 | { | |
2039 | asection *pltoff; | |
2040 | bfd *dynobj; | |
2041 | ||
2042 | pltoff = ia64_info->pltoff_sec; | |
2043 | if (!pltoff) | |
2044 | { | |
2045 | dynobj = ia64_info->root.dynobj; | |
2046 | if (!dynobj) | |
2047 | ia64_info->root.dynobj = dynobj = abfd; | |
2048 | ||
3d4d4302 AM |
2049 | pltoff = bfd_make_section_anyway_with_flags (dynobj, |
2050 | ELF_STRING_ia64_pltoff, | |
2051 | (SEC_ALLOC | |
2052 | | SEC_LOAD | |
2053 | | SEC_HAS_CONTENTS | |
2054 | | SEC_IN_MEMORY | |
2055 | | SEC_SMALL_DATA | |
2056 | | SEC_LINKER_CREATED)); | |
cbe79dfe TG |
2057 | if (!pltoff |
2058 | || !bfd_set_section_alignment (abfd, pltoff, 4)) | |
2059 | { | |
2060 | BFD_ASSERT (0); | |
2061 | return NULL; | |
2062 | } | |
2063 | ||
2064 | ia64_info->pltoff_sec = pltoff; | |
2065 | } | |
2066 | ||
2067 | return pltoff; | |
2068 | } | |
2069 | ||
2070 | static asection * | |
2071 | get_reloc_section (bfd *abfd, | |
2072 | struct elfNN_ia64_link_hash_table *ia64_info, | |
2073 | asection *sec, bfd_boolean create) | |
2074 | { | |
2075 | const char *srel_name; | |
2076 | asection *srel; | |
2077 | bfd *dynobj; | |
2078 | ||
2079 | srel_name = (bfd_elf_string_from_elf_section | |
2080 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
2081 | _bfd_elf_single_rel_hdr (sec)->sh_name)); | |
2082 | if (srel_name == NULL) | |
2083 | return NULL; | |
2084 | ||
2085 | dynobj = ia64_info->root.dynobj; | |
2086 | if (!dynobj) | |
2087 | ia64_info->root.dynobj = dynobj = abfd; | |
2088 | ||
3d4d4302 | 2089 | srel = bfd_get_linker_section (dynobj, srel_name); |
cbe79dfe TG |
2090 | if (srel == NULL && create) |
2091 | { | |
3d4d4302 AM |
2092 | srel = bfd_make_section_anyway_with_flags (dynobj, srel_name, |
2093 | (SEC_ALLOC | SEC_LOAD | |
2094 | | SEC_HAS_CONTENTS | |
2095 | | SEC_IN_MEMORY | |
2096 | | SEC_LINKER_CREATED | |
2097 | | SEC_READONLY)); | |
cbe79dfe TG |
2098 | if (srel == NULL |
2099 | || !bfd_set_section_alignment (dynobj, srel, | |
2100 | LOG_SECTION_ALIGN)) | |
2101 | return NULL; | |
2102 | } | |
2103 | ||
2104 | return srel; | |
2105 | } | |
2106 | ||
2107 | static bfd_boolean | |
2108 | count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2109 | asection *srel, int type, bfd_boolean reltext) | |
2110 | { | |
2111 | struct elfNN_ia64_dyn_reloc_entry *rent; | |
2112 | ||
2113 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) | |
2114 | if (rent->srel == srel && rent->type == type) | |
2115 | break; | |
2116 | ||
2117 | if (!rent) | |
2118 | { | |
2119 | rent = ((struct elfNN_ia64_dyn_reloc_entry *) | |
2120 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent))); | |
2121 | if (!rent) | |
2122 | return FALSE; | |
2123 | ||
2124 | rent->next = dyn_i->reloc_entries; | |
2125 | rent->srel = srel; | |
2126 | rent->type = type; | |
2127 | rent->count = 0; | |
2128 | dyn_i->reloc_entries = rent; | |
2129 | } | |
23ebcd30 | 2130 | rent->reltext = reltext; |
cbe79dfe TG |
2131 | rent->count++; |
2132 | ||
2133 | return TRUE; | |
2134 | } | |
2135 | ||
2136 | static bfd_boolean | |
2137 | elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
2138 | asection *sec, | |
2139 | const Elf_Internal_Rela *relocs) | |
2140 | { | |
2141 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2142 | const Elf_Internal_Rela *relend; | |
2143 | Elf_Internal_Shdr *symtab_hdr; | |
2144 | const Elf_Internal_Rela *rel; | |
2145 | asection *got, *fptr, *srel, *pltoff; | |
2146 | enum { | |
2147 | NEED_GOT = 1, | |
2148 | NEED_GOTX = 2, | |
2149 | NEED_FPTR = 4, | |
2150 | NEED_PLTOFF = 8, | |
2151 | NEED_MIN_PLT = 16, | |
2152 | NEED_FULL_PLT = 32, | |
2153 | NEED_DYNREL = 64, | |
2154 | NEED_LTOFF_FPTR = 128, | |
2155 | NEED_TPREL = 256, | |
2156 | NEED_DTPMOD = 512, | |
2157 | NEED_DTPREL = 1024 | |
2158 | }; | |
2159 | int need_entry; | |
2160 | struct elf_link_hash_entry *h; | |
2161 | unsigned long r_symndx; | |
2162 | bfd_boolean maybe_dynamic; | |
2163 | ||
0e1862bb | 2164 | if (bfd_link_relocatable (info)) |
cbe79dfe TG |
2165 | return TRUE; |
2166 | ||
2167 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2168 | ia64_info = elfNN_ia64_hash_table (info); | |
2169 | if (ia64_info == NULL) | |
2170 | return FALSE; | |
2171 | ||
2172 | got = fptr = srel = pltoff = NULL; | |
2173 | ||
2174 | relend = relocs + sec->reloc_count; | |
2175 | ||
2176 | /* We scan relocations first to create dynamic relocation arrays. We | |
2177 | modified get_dyn_sym_info to allow fast insertion and support fast | |
2178 | lookup in the next loop. */ | |
2179 | for (rel = relocs; rel < relend; ++rel) | |
2180 | { | |
2181 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
2182 | if (r_symndx >= symtab_hdr->sh_info) | |
2183 | { | |
2184 | long indx = r_symndx - symtab_hdr->sh_info; | |
2185 | h = elf_sym_hashes (abfd)[indx]; | |
2186 | while (h->root.type == bfd_link_hash_indirect | |
2187 | || h->root.type == bfd_link_hash_warning) | |
2188 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2189 | } | |
2190 | else | |
2191 | h = NULL; | |
2192 | ||
db41f6eb L |
2193 | if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
2194 | continue; | |
2195 | ||
cbe79dfe TG |
2196 | /* We can only get preliminary data on whether a symbol is |
2197 | locally or externally defined, as not all of the input files | |
2198 | have yet been processed. Do something with what we know, as | |
2199 | this may help reduce memory usage and processing time later. */ | |
0e1862bb | 2200 | maybe_dynamic = (h && ((!bfd_link_executable (info) |
cbe79dfe TG |
2201 | && (!SYMBOLIC_BIND (info, h) |
2202 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
2203 | || !h->def_regular | |
2204 | || h->root.type == bfd_link_hash_defweak)); | |
2205 | ||
2206 | need_entry = 0; | |
2207 | switch (ELFNN_R_TYPE (rel->r_info)) | |
2208 | { | |
2209 | case R_IA64_TPREL64MSB: | |
2210 | case R_IA64_TPREL64LSB: | |
0e1862bb | 2211 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2212 | need_entry = NEED_DYNREL; |
2213 | break; | |
2214 | ||
2215 | case R_IA64_LTOFF_TPREL22: | |
2216 | need_entry = NEED_TPREL; | |
0e1862bb | 2217 | if (bfd_link_pic (info)) |
cbe79dfe TG |
2218 | info->flags |= DF_STATIC_TLS; |
2219 | break; | |
2220 | ||
2221 | case R_IA64_DTPREL32MSB: | |
2222 | case R_IA64_DTPREL32LSB: | |
2223 | case R_IA64_DTPREL64MSB: | |
2224 | case R_IA64_DTPREL64LSB: | |
0e1862bb | 2225 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2226 | need_entry = NEED_DYNREL; |
2227 | break; | |
2228 | ||
2229 | case R_IA64_LTOFF_DTPREL22: | |
2230 | need_entry = NEED_DTPREL; | |
2231 | break; | |
2232 | ||
2233 | case R_IA64_DTPMOD64MSB: | |
2234 | case R_IA64_DTPMOD64LSB: | |
0e1862bb | 2235 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2236 | need_entry = NEED_DYNREL; |
2237 | break; | |
2238 | ||
2239 | case R_IA64_LTOFF_DTPMOD22: | |
2240 | need_entry = NEED_DTPMOD; | |
2241 | break; | |
2242 | ||
2243 | case R_IA64_LTOFF_FPTR22: | |
2244 | case R_IA64_LTOFF_FPTR64I: | |
2245 | case R_IA64_LTOFF_FPTR32MSB: | |
2246 | case R_IA64_LTOFF_FPTR32LSB: | |
2247 | case R_IA64_LTOFF_FPTR64MSB: | |
2248 | case R_IA64_LTOFF_FPTR64LSB: | |
2249 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; | |
2250 | break; | |
2251 | ||
2252 | case R_IA64_FPTR64I: | |
2253 | case R_IA64_FPTR32MSB: | |
2254 | case R_IA64_FPTR32LSB: | |
2255 | case R_IA64_FPTR64MSB: | |
2256 | case R_IA64_FPTR64LSB: | |
0e1862bb | 2257 | if (bfd_link_pic (info) || h) |
cbe79dfe TG |
2258 | need_entry = NEED_FPTR | NEED_DYNREL; |
2259 | else | |
2260 | need_entry = NEED_FPTR; | |
2261 | break; | |
2262 | ||
2263 | case R_IA64_LTOFF22: | |
2264 | case R_IA64_LTOFF64I: | |
2265 | need_entry = NEED_GOT; | |
2266 | break; | |
2267 | ||
2268 | case R_IA64_LTOFF22X: | |
2269 | need_entry = NEED_GOTX; | |
2270 | break; | |
2271 | ||
2272 | case R_IA64_PLTOFF22: | |
2273 | case R_IA64_PLTOFF64I: | |
2274 | case R_IA64_PLTOFF64MSB: | |
2275 | case R_IA64_PLTOFF64LSB: | |
2276 | need_entry = NEED_PLTOFF; | |
2277 | if (h) | |
2278 | { | |
2279 | if (maybe_dynamic) | |
2280 | need_entry |= NEED_MIN_PLT; | |
2281 | } | |
2282 | else | |
2283 | { | |
2284 | (*info->callbacks->warning) | |
2285 | (info, _("@pltoff reloc against local symbol"), 0, | |
2286 | abfd, 0, (bfd_vma) 0); | |
2287 | } | |
2288 | break; | |
2289 | ||
2290 | case R_IA64_PCREL21B: | |
2291 | case R_IA64_PCREL60B: | |
2292 | /* Depending on where this symbol is defined, we may or may not | |
2293 | need a full plt entry. Only skip if we know we'll not need | |
2294 | the entry -- static or symbolic, and the symbol definition | |
2295 | has already been seen. */ | |
2296 | if (maybe_dynamic && rel->r_addend == 0) | |
2297 | need_entry = NEED_FULL_PLT; | |
2298 | break; | |
2299 | ||
2300 | case R_IA64_IMM14: | |
2301 | case R_IA64_IMM22: | |
2302 | case R_IA64_IMM64: | |
2303 | case R_IA64_DIR32MSB: | |
2304 | case R_IA64_DIR32LSB: | |
2305 | case R_IA64_DIR64MSB: | |
2306 | case R_IA64_DIR64LSB: | |
2307 | /* Shared objects will always need at least a REL relocation. */ | |
0e1862bb | 2308 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2309 | need_entry = NEED_DYNREL; |
2310 | break; | |
2311 | ||
2312 | case R_IA64_IPLTMSB: | |
2313 | case R_IA64_IPLTLSB: | |
2314 | /* Shared objects will always need at least a REL relocation. */ | |
0e1862bb | 2315 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2316 | need_entry = NEED_DYNREL; |
2317 | break; | |
2318 | ||
2319 | case R_IA64_PCREL22: | |
2320 | case R_IA64_PCREL64I: | |
2321 | case R_IA64_PCREL32MSB: | |
2322 | case R_IA64_PCREL32LSB: | |
2323 | case R_IA64_PCREL64MSB: | |
2324 | case R_IA64_PCREL64LSB: | |
2325 | if (maybe_dynamic) | |
2326 | need_entry = NEED_DYNREL; | |
2327 | break; | |
2328 | } | |
2329 | ||
2330 | if (!need_entry) | |
2331 | continue; | |
2332 | ||
2333 | if ((need_entry & NEED_FPTR) != 0 | |
2334 | && rel->r_addend) | |
2335 | { | |
2336 | (*info->callbacks->warning) | |
2337 | (info, _("non-zero addend in @fptr reloc"), 0, | |
2338 | abfd, 0, (bfd_vma) 0); | |
2339 | } | |
2340 | ||
2341 | if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL) | |
2342 | return FALSE; | |
2343 | } | |
2344 | ||
2345 | /* Now, we only do lookup without insertion, which is very fast | |
2346 | with the modified get_dyn_sym_info. */ | |
2347 | for (rel = relocs; rel < relend; ++rel) | |
2348 | { | |
2349 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
2350 | int dynrel_type = R_IA64_NONE; | |
2351 | ||
2352 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
2353 | if (r_symndx >= symtab_hdr->sh_info) | |
2354 | { | |
2355 | /* We're dealing with a global symbol -- find its hash entry | |
2356 | and mark it as being referenced. */ | |
2357 | long indx = r_symndx - symtab_hdr->sh_info; | |
2358 | h = elf_sym_hashes (abfd)[indx]; | |
2359 | while (h->root.type == bfd_link_hash_indirect | |
2360 | || h->root.type == bfd_link_hash_warning) | |
2361 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2362 | ||
81fbe831 AM |
2363 | /* PR15323, ref flags aren't set for references in the same |
2364 | object. */ | |
cbe79dfe TG |
2365 | h->ref_regular = 1; |
2366 | } | |
2367 | else | |
2368 | h = NULL; | |
2369 | ||
db41f6eb L |
2370 | if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
2371 | continue; | |
2372 | ||
cbe79dfe TG |
2373 | /* We can only get preliminary data on whether a symbol is |
2374 | locally or externally defined, as not all of the input files | |
2375 | have yet been processed. Do something with what we know, as | |
2376 | this may help reduce memory usage and processing time later. */ | |
0e1862bb | 2377 | maybe_dynamic = (h && ((!bfd_link_executable (info) |
cbe79dfe TG |
2378 | && (!SYMBOLIC_BIND (info, h) |
2379 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
2380 | || !h->def_regular | |
2381 | || h->root.type == bfd_link_hash_defweak)); | |
2382 | ||
2383 | need_entry = 0; | |
2384 | switch (ELFNN_R_TYPE (rel->r_info)) | |
2385 | { | |
2386 | case R_IA64_TPREL64MSB: | |
2387 | case R_IA64_TPREL64LSB: | |
0e1862bb | 2388 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2389 | need_entry = NEED_DYNREL; |
2390 | dynrel_type = R_IA64_TPREL64LSB; | |
0e1862bb | 2391 | if (bfd_link_pic (info)) |
cbe79dfe TG |
2392 | info->flags |= DF_STATIC_TLS; |
2393 | break; | |
2394 | ||
2395 | case R_IA64_LTOFF_TPREL22: | |
2396 | need_entry = NEED_TPREL; | |
0e1862bb | 2397 | if (bfd_link_pic (info)) |
cbe79dfe TG |
2398 | info->flags |= DF_STATIC_TLS; |
2399 | break; | |
2400 | ||
2401 | case R_IA64_DTPREL32MSB: | |
2402 | case R_IA64_DTPREL32LSB: | |
2403 | case R_IA64_DTPREL64MSB: | |
2404 | case R_IA64_DTPREL64LSB: | |
0e1862bb | 2405 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2406 | need_entry = NEED_DYNREL; |
2407 | dynrel_type = R_IA64_DTPRELNNLSB; | |
2408 | break; | |
2409 | ||
2410 | case R_IA64_LTOFF_DTPREL22: | |
2411 | need_entry = NEED_DTPREL; | |
2412 | break; | |
2413 | ||
2414 | case R_IA64_DTPMOD64MSB: | |
2415 | case R_IA64_DTPMOD64LSB: | |
0e1862bb | 2416 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2417 | need_entry = NEED_DYNREL; |
2418 | dynrel_type = R_IA64_DTPMOD64LSB; | |
2419 | break; | |
2420 | ||
2421 | case R_IA64_LTOFF_DTPMOD22: | |
2422 | need_entry = NEED_DTPMOD; | |
2423 | break; | |
2424 | ||
2425 | case R_IA64_LTOFF_FPTR22: | |
2426 | case R_IA64_LTOFF_FPTR64I: | |
2427 | case R_IA64_LTOFF_FPTR32MSB: | |
2428 | case R_IA64_LTOFF_FPTR32LSB: | |
2429 | case R_IA64_LTOFF_FPTR64MSB: | |
2430 | case R_IA64_LTOFF_FPTR64LSB: | |
2431 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; | |
2432 | break; | |
2433 | ||
2434 | case R_IA64_FPTR64I: | |
2435 | case R_IA64_FPTR32MSB: | |
2436 | case R_IA64_FPTR32LSB: | |
2437 | case R_IA64_FPTR64MSB: | |
2438 | case R_IA64_FPTR64LSB: | |
0e1862bb | 2439 | if (bfd_link_pic (info) || h) |
cbe79dfe TG |
2440 | need_entry = NEED_FPTR | NEED_DYNREL; |
2441 | else | |
2442 | need_entry = NEED_FPTR; | |
2443 | dynrel_type = R_IA64_FPTRNNLSB; | |
2444 | break; | |
2445 | ||
2446 | case R_IA64_LTOFF22: | |
2447 | case R_IA64_LTOFF64I: | |
2448 | need_entry = NEED_GOT; | |
2449 | break; | |
2450 | ||
2451 | case R_IA64_LTOFF22X: | |
2452 | need_entry = NEED_GOTX; | |
2453 | break; | |
2454 | ||
2455 | case R_IA64_PLTOFF22: | |
2456 | case R_IA64_PLTOFF64I: | |
2457 | case R_IA64_PLTOFF64MSB: | |
2458 | case R_IA64_PLTOFF64LSB: | |
2459 | need_entry = NEED_PLTOFF; | |
2460 | if (h) | |
2461 | { | |
2462 | if (maybe_dynamic) | |
2463 | need_entry |= NEED_MIN_PLT; | |
2464 | } | |
2465 | break; | |
2466 | ||
2467 | case R_IA64_PCREL21B: | |
2468 | case R_IA64_PCREL60B: | |
2469 | /* Depending on where this symbol is defined, we may or may not | |
2470 | need a full plt entry. Only skip if we know we'll not need | |
2471 | the entry -- static or symbolic, and the symbol definition | |
2472 | has already been seen. */ | |
2473 | if (maybe_dynamic && rel->r_addend == 0) | |
2474 | need_entry = NEED_FULL_PLT; | |
2475 | break; | |
2476 | ||
2477 | case R_IA64_IMM14: | |
2478 | case R_IA64_IMM22: | |
2479 | case R_IA64_IMM64: | |
2480 | case R_IA64_DIR32MSB: | |
2481 | case R_IA64_DIR32LSB: | |
2482 | case R_IA64_DIR64MSB: | |
2483 | case R_IA64_DIR64LSB: | |
2484 | /* Shared objects will always need at least a REL relocation. */ | |
0e1862bb | 2485 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2486 | need_entry = NEED_DYNREL; |
2487 | dynrel_type = R_IA64_DIRNNLSB; | |
2488 | break; | |
2489 | ||
2490 | case R_IA64_IPLTMSB: | |
2491 | case R_IA64_IPLTLSB: | |
2492 | /* Shared objects will always need at least a REL relocation. */ | |
0e1862bb | 2493 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2494 | need_entry = NEED_DYNREL; |
2495 | dynrel_type = R_IA64_IPLTLSB; | |
2496 | break; | |
2497 | ||
2498 | case R_IA64_PCREL22: | |
2499 | case R_IA64_PCREL64I: | |
2500 | case R_IA64_PCREL32MSB: | |
2501 | case R_IA64_PCREL32LSB: | |
2502 | case R_IA64_PCREL64MSB: | |
2503 | case R_IA64_PCREL64LSB: | |
2504 | if (maybe_dynamic) | |
2505 | need_entry = NEED_DYNREL; | |
2506 | dynrel_type = R_IA64_PCRELNNLSB; | |
2507 | break; | |
2508 | } | |
2509 | ||
2510 | if (!need_entry) | |
2511 | continue; | |
2512 | ||
2513 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE); | |
2514 | ||
2515 | /* Record whether or not this is a local symbol. */ | |
2516 | dyn_i->h = h; | |
2517 | ||
2518 | /* Create what's needed. */ | |
2519 | if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL | |
2520 | | NEED_DTPMOD | NEED_DTPREL)) | |
2521 | { | |
2522 | if (!got) | |
2523 | { | |
2524 | got = get_got (abfd, info, ia64_info); | |
2525 | if (!got) | |
2526 | return FALSE; | |
2527 | } | |
2528 | if (need_entry & NEED_GOT) | |
2529 | dyn_i->want_got = 1; | |
2530 | if (need_entry & NEED_GOTX) | |
2531 | dyn_i->want_gotx = 1; | |
2532 | if (need_entry & NEED_TPREL) | |
2533 | dyn_i->want_tprel = 1; | |
2534 | if (need_entry & NEED_DTPMOD) | |
2535 | dyn_i->want_dtpmod = 1; | |
2536 | if (need_entry & NEED_DTPREL) | |
2537 | dyn_i->want_dtprel = 1; | |
2538 | } | |
2539 | if (need_entry & NEED_FPTR) | |
2540 | { | |
2541 | if (!fptr) | |
2542 | { | |
2543 | fptr = get_fptr (abfd, info, ia64_info); | |
2544 | if (!fptr) | |
2545 | return FALSE; | |
2546 | } | |
2547 | ||
2548 | /* FPTRs for shared libraries are allocated by the dynamic | |
2549 | linker. Make sure this local symbol will appear in the | |
2550 | dynamic symbol table. */ | |
0e1862bb | 2551 | if (!h && bfd_link_pic (info)) |
cbe79dfe TG |
2552 | { |
2553 | if (! (bfd_elf_link_record_local_dynamic_symbol | |
2554 | (info, abfd, (long) r_symndx))) | |
2555 | return FALSE; | |
2556 | } | |
2557 | ||
2558 | dyn_i->want_fptr = 1; | |
2559 | } | |
2560 | if (need_entry & NEED_LTOFF_FPTR) | |
2561 | dyn_i->want_ltoff_fptr = 1; | |
2562 | if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT)) | |
2563 | { | |
2564 | if (!ia64_info->root.dynobj) | |
2565 | ia64_info->root.dynobj = abfd; | |
2566 | h->needs_plt = 1; | |
2567 | dyn_i->want_plt = 1; | |
2568 | } | |
2569 | if (need_entry & NEED_FULL_PLT) | |
2570 | dyn_i->want_plt2 = 1; | |
2571 | if (need_entry & NEED_PLTOFF) | |
2572 | { | |
2573 | /* This is needed here, in case @pltoff is used in a non-shared | |
2574 | link. */ | |
2575 | if (!pltoff) | |
2576 | { | |
2577 | pltoff = get_pltoff (abfd, info, ia64_info); | |
2578 | if (!pltoff) | |
2579 | return FALSE; | |
2580 | } | |
2581 | ||
2582 | dyn_i->want_pltoff = 1; | |
2583 | } | |
2584 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) | |
2585 | { | |
2586 | if (!srel) | |
2587 | { | |
2588 | srel = get_reloc_section (abfd, ia64_info, sec, TRUE); | |
2589 | if (!srel) | |
2590 | return FALSE; | |
2591 | } | |
2592 | if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type, | |
2593 | (sec->flags & SEC_READONLY) != 0)) | |
2594 | return FALSE; | |
2595 | } | |
2596 | } | |
2597 | ||
2598 | return TRUE; | |
2599 | } | |
2600 | ||
2601 | /* For cleanliness, and potentially faster dynamic loading, allocate | |
2602 | external GOT entries first. */ | |
2603 | ||
2604 | static bfd_boolean | |
2605 | allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2606 | void * data) | |
2607 | { | |
2608 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2609 | ||
2610 | if ((dyn_i->want_got || dyn_i->want_gotx) | |
2611 | && ! dyn_i->want_fptr | |
2612 | && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2613 | { | |
2614 | dyn_i->got_offset = x->ofs; | |
2615 | x->ofs += 8; | |
2616 | } | |
2617 | if (dyn_i->want_tprel) | |
2618 | { | |
2619 | dyn_i->tprel_offset = x->ofs; | |
2620 | x->ofs += 8; | |
2621 | } | |
2622 | if (dyn_i->want_dtpmod) | |
2623 | { | |
2624 | if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2625 | { | |
2626 | dyn_i->dtpmod_offset = x->ofs; | |
2627 | x->ofs += 8; | |
2628 | } | |
2629 | else | |
2630 | { | |
2631 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2632 | ||
2633 | ia64_info = elfNN_ia64_hash_table (x->info); | |
2634 | if (ia64_info == NULL) | |
2635 | return FALSE; | |
2636 | ||
2637 | if (ia64_info->self_dtpmod_offset == (bfd_vma) -1) | |
2638 | { | |
2639 | ia64_info->self_dtpmod_offset = x->ofs; | |
2640 | x->ofs += 8; | |
2641 | } | |
2642 | dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset; | |
2643 | } | |
2644 | } | |
2645 | if (dyn_i->want_dtprel) | |
2646 | { | |
2647 | dyn_i->dtprel_offset = x->ofs; | |
2648 | x->ofs += 8; | |
2649 | } | |
2650 | return TRUE; | |
2651 | } | |
2652 | ||
2653 | /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */ | |
2654 | ||
2655 | static bfd_boolean | |
2656 | allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2657 | void * data) | |
2658 | { | |
2659 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2660 | ||
2661 | if (dyn_i->want_got | |
2662 | && dyn_i->want_fptr | |
2663 | && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB)) | |
2664 | { | |
2665 | dyn_i->got_offset = x->ofs; | |
2666 | x->ofs += 8; | |
2667 | } | |
2668 | return TRUE; | |
2669 | } | |
2670 | ||
2671 | /* Lastly, allocate all the GOT entries for local data. */ | |
2672 | ||
2673 | static bfd_boolean | |
2674 | allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2675 | void * data) |
cbe79dfe TG |
2676 | { |
2677 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2678 | ||
2679 | if ((dyn_i->want_got || dyn_i->want_gotx) | |
2680 | && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2681 | { | |
2682 | dyn_i->got_offset = x->ofs; | |
2683 | x->ofs += 8; | |
2684 | } | |
2685 | return TRUE; | |
2686 | } | |
2687 | ||
2688 | /* Search for the index of a global symbol in it's defining object file. */ | |
2689 | ||
2690 | static long | |
2691 | global_sym_index (struct elf_link_hash_entry *h) | |
2692 | { | |
2693 | struct elf_link_hash_entry **p; | |
2694 | bfd *obj; | |
2695 | ||
2696 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
2697 | || h->root.type == bfd_link_hash_defweak); | |
2698 | ||
2699 | obj = h->root.u.def.section->owner; | |
2700 | for (p = elf_sym_hashes (obj); *p != h; ++p) | |
2701 | continue; | |
2702 | ||
2703 | return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info; | |
2704 | } | |
2705 | ||
2706 | /* Allocate function descriptors. We can do these for every function | |
2707 | in a main executable that is not exported. */ | |
2708 | ||
2709 | static bfd_boolean | |
2c3fc389 | 2710 | allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data) |
cbe79dfe TG |
2711 | { |
2712 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2713 | ||
2714 | if (dyn_i->want_fptr) | |
2715 | { | |
2716 | struct elf_link_hash_entry *h = dyn_i->h; | |
2717 | ||
2718 | if (h) | |
2719 | while (h->root.type == bfd_link_hash_indirect | |
2720 | || h->root.type == bfd_link_hash_warning) | |
2721 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2722 | ||
0e1862bb | 2723 | if (!bfd_link_executable (x->info) |
cbe79dfe | 2724 | && (!h |
db41f6eb L |
2725 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2726 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (x->info, h)) | |
cbe79dfe TG |
2727 | || (h->root.type != bfd_link_hash_undefweak |
2728 | && h->root.type != bfd_link_hash_undefined))) | |
2729 | { | |
2730 | if (h && h->dynindx == -1) | |
2731 | { | |
2732 | BFD_ASSERT ((h->root.type == bfd_link_hash_defined) | |
2733 | || (h->root.type == bfd_link_hash_defweak)); | |
2734 | ||
2735 | if (!bfd_elf_link_record_local_dynamic_symbol | |
2736 | (x->info, h->root.u.def.section->owner, | |
2737 | global_sym_index (h))) | |
2738 | return FALSE; | |
2739 | } | |
2740 | ||
2741 | dyn_i->want_fptr = 0; | |
2742 | } | |
2743 | else if (h == NULL || h->dynindx == -1) | |
2744 | { | |
2745 | dyn_i->fptr_offset = x->ofs; | |
2746 | x->ofs += 16; | |
2747 | } | |
2748 | else | |
2749 | dyn_i->want_fptr = 0; | |
2750 | } | |
2751 | return TRUE; | |
2752 | } | |
2753 | ||
2754 | /* Allocate all the minimal PLT entries. */ | |
2755 | ||
2756 | static bfd_boolean | |
2757 | allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2758 | void * data) |
cbe79dfe TG |
2759 | { |
2760 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2761 | ||
2762 | if (dyn_i->want_plt) | |
2763 | { | |
2764 | struct elf_link_hash_entry *h = dyn_i->h; | |
2765 | ||
2766 | if (h) | |
2767 | while (h->root.type == bfd_link_hash_indirect | |
2768 | || h->root.type == bfd_link_hash_warning) | |
2769 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2770 | ||
2771 | /* ??? Versioned symbols seem to lose NEEDS_PLT. */ | |
2772 | if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0)) | |
2773 | { | |
2774 | bfd_size_type offset = x->ofs; | |
2775 | if (offset == 0) | |
2776 | offset = PLT_HEADER_SIZE; | |
2777 | dyn_i->plt_offset = offset; | |
2778 | x->ofs = offset + PLT_MIN_ENTRY_SIZE; | |
2779 | ||
2780 | dyn_i->want_pltoff = 1; | |
2781 | } | |
2782 | else | |
2783 | { | |
2784 | dyn_i->want_plt = 0; | |
2785 | dyn_i->want_plt2 = 0; | |
2786 | } | |
2787 | } | |
2788 | return TRUE; | |
2789 | } | |
2790 | ||
2791 | /* Allocate all the full PLT entries. */ | |
2792 | ||
2793 | static bfd_boolean | |
2794 | allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2795 | void * data) |
cbe79dfe TG |
2796 | { |
2797 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2798 | ||
2799 | if (dyn_i->want_plt2) | |
2800 | { | |
2801 | struct elf_link_hash_entry *h = dyn_i->h; | |
2802 | bfd_size_type ofs = x->ofs; | |
2803 | ||
2804 | dyn_i->plt2_offset = ofs; | |
2805 | x->ofs = ofs + PLT_FULL_ENTRY_SIZE; | |
2806 | ||
2807 | while (h->root.type == bfd_link_hash_indirect | |
2808 | || h->root.type == bfd_link_hash_warning) | |
2809 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2810 | dyn_i->h->plt.offset = ofs; | |
2811 | } | |
2812 | return TRUE; | |
2813 | } | |
2814 | ||
2815 | /* Allocate all the PLTOFF entries requested by relocations and | |
2816 | plt entries. We can't share space with allocated FPTR entries, | |
2817 | because the latter are not necessarily addressable by the GP. | |
2818 | ??? Relaxation might be able to determine that they are. */ | |
2819 | ||
2820 | static bfd_boolean | |
2821 | allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2822 | void * data) |
cbe79dfe TG |
2823 | { |
2824 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2825 | ||
2826 | if (dyn_i->want_pltoff) | |
2827 | { | |
2828 | dyn_i->pltoff_offset = x->ofs; | |
2829 | x->ofs += 16; | |
2830 | } | |
2831 | return TRUE; | |
2832 | } | |
2833 | ||
2834 | /* Allocate dynamic relocations for those symbols that turned out | |
2835 | to be dynamic. */ | |
2836 | ||
2837 | static bfd_boolean | |
2838 | allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2839 | void * data) |
cbe79dfe TG |
2840 | { |
2841 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2842 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2843 | struct elfNN_ia64_dyn_reloc_entry *rent; | |
2844 | bfd_boolean dynamic_symbol, shared, resolved_zero; | |
2845 | ||
2846 | ia64_info = elfNN_ia64_hash_table (x->info); | |
2847 | if (ia64_info == NULL) | |
2848 | return FALSE; | |
2849 | ||
2850 | /* Note that this can't be used in relation to FPTR relocs below. */ | |
2851 | dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0); | |
2852 | ||
0e1862bb | 2853 | shared = bfd_link_pic (x->info); |
cbe79dfe | 2854 | resolved_zero = (dyn_i->h |
db41f6eb L |
2855 | && UNDEFWEAK_NO_DYNAMIC_RELOC (x->info, |
2856 | dyn_i->h)); | |
cbe79dfe TG |
2857 | |
2858 | /* Take care of the GOT and PLT relocations. */ | |
2859 | ||
2860 | if ((!resolved_zero | |
2861 | && (dynamic_symbol || shared) | |
2862 | && (dyn_i->want_got || dyn_i->want_gotx)) | |
2863 | || (dyn_i->want_ltoff_fptr | |
2864 | && dyn_i->h | |
2865 | && dyn_i->h->dynindx != -1)) | |
2866 | { | |
2867 | if (!dyn_i->want_ltoff_fptr | |
0e1862bb | 2868 | || !bfd_link_pie (x->info) |
cbe79dfe TG |
2869 | || dyn_i->h == NULL |
2870 | || dyn_i->h->root.type != bfd_link_hash_undefweak) | |
2871 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2872 | } | |
2873 | if ((dynamic_symbol || shared) && dyn_i->want_tprel) | |
2874 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2875 | if (dynamic_symbol && dyn_i->want_dtpmod) | |
2876 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2877 | if (dynamic_symbol && dyn_i->want_dtprel) | |
2878 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2879 | ||
2880 | if (x->only_got) | |
2881 | return TRUE; | |
2882 | ||
2883 | if (ia64_info->rel_fptr_sec && dyn_i->want_fptr) | |
2884 | { | |
2885 | if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak) | |
2886 | ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela); | |
2887 | } | |
2888 | ||
2889 | if (!resolved_zero && dyn_i->want_pltoff) | |
2890 | { | |
2891 | bfd_size_type t = 0; | |
2892 | ||
2893 | /* Dynamic symbols get one IPLT relocation. Local symbols in | |
2894 | shared libraries get two REL relocations. Local symbols in | |
2895 | main applications get nothing. */ | |
2896 | if (dynamic_symbol) | |
2897 | t = sizeof (ElfNN_External_Rela); | |
2898 | else if (shared) | |
2899 | t = 2 * sizeof (ElfNN_External_Rela); | |
2900 | ||
2901 | ia64_info->rel_pltoff_sec->size += t; | |
2902 | } | |
2903 | ||
2904 | /* Take care of the normal data relocations. */ | |
2905 | ||
2906 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) | |
2907 | { | |
2908 | int count = rent->count; | |
2909 | ||
2910 | switch (rent->type) | |
2911 | { | |
2912 | case R_IA64_FPTR32LSB: | |
2913 | case R_IA64_FPTR64LSB: | |
2914 | /* Allocate one iff !want_fptr and not PIE, which by this point | |
2915 | will be true only if we're actually allocating one statically | |
2916 | in the main executable. Position independent executables | |
2917 | need a relative reloc. */ | |
0e1862bb | 2918 | if (dyn_i->want_fptr && !bfd_link_pie (x->info)) |
cbe79dfe TG |
2919 | continue; |
2920 | break; | |
2921 | case R_IA64_PCREL32LSB: | |
2922 | case R_IA64_PCREL64LSB: | |
2923 | if (!dynamic_symbol) | |
2924 | continue; | |
2925 | break; | |
2926 | case R_IA64_DIR32LSB: | |
2927 | case R_IA64_DIR64LSB: | |
2928 | if (!dynamic_symbol && !shared) | |
2929 | continue; | |
2930 | break; | |
2931 | case R_IA64_IPLTLSB: | |
2932 | if (!dynamic_symbol && !shared) | |
2933 | continue; | |
2934 | /* Use two REL relocations for IPLT relocations | |
2935 | against local symbols. */ | |
2936 | if (!dynamic_symbol) | |
2937 | count *= 2; | |
2938 | break; | |
2939 | case R_IA64_DTPREL32LSB: | |
2940 | case R_IA64_TPREL64LSB: | |
2941 | case R_IA64_DTPREL64LSB: | |
2942 | case R_IA64_DTPMOD64LSB: | |
2943 | break; | |
2944 | default: | |
2945 | abort (); | |
2946 | } | |
2947 | if (rent->reltext) | |
2948 | ia64_info->reltext = 1; | |
2949 | rent->srel->size += sizeof (ElfNN_External_Rela) * count; | |
2950 | } | |
2951 | ||
2952 | return TRUE; | |
2953 | } | |
2954 | ||
2955 | static bfd_boolean | |
2956 | elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2957 | struct elf_link_hash_entry *h) | |
2958 | { | |
2959 | /* ??? Undefined symbols with PLT entries should be re-defined | |
2960 | to be the PLT entry. */ | |
2961 | ||
2962 | /* If this is a weak symbol, and there is a real definition, the | |
2963 | processor independent code will have arranged for us to see the | |
2964 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 2965 | if (h->is_weakalias) |
cbe79dfe | 2966 | { |
60d67dc8 AM |
2967 | struct elf_link_hash_entry *def = weakdef (h); |
2968 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
2969 | h->root.u.def.section = def->root.u.def.section; | |
2970 | h->root.u.def.value = def->root.u.def.value; | |
cbe79dfe TG |
2971 | return TRUE; |
2972 | } | |
2973 | ||
2974 | /* If this is a reference to a symbol defined by a dynamic object which | |
2975 | is not a function, we might allocate the symbol in our .dynbss section | |
2976 | and allocate a COPY dynamic relocation. | |
2977 | ||
2978 | But IA-64 code is canonically PIC, so as a rule we can avoid this sort | |
2979 | of hackery. */ | |
2980 | ||
2981 | return TRUE; | |
2982 | } | |
2983 | ||
2984 | static bfd_boolean | |
2985 | elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2986 | struct bfd_link_info *info) | |
2987 | { | |
2988 | struct elfNN_ia64_allocate_data data; | |
2989 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2990 | asection *sec; | |
2991 | bfd *dynobj; | |
2992 | bfd_boolean relplt = FALSE; | |
2993 | ||
cbe79dfe TG |
2994 | ia64_info = elfNN_ia64_hash_table (info); |
2995 | if (ia64_info == NULL) | |
2996 | return FALSE; | |
ce558b89 | 2997 | dynobj = ia64_info->root.dynobj; |
cbe79dfe TG |
2998 | ia64_info->self_dtpmod_offset = (bfd_vma) -1; |
2999 | BFD_ASSERT(dynobj != NULL); | |
3000 | data.info = info; | |
3001 | ||
3002 | /* Set the contents of the .interp section to the interpreter. */ | |
3003 | if (ia64_info->root.dynamic_sections_created | |
9b8b325a | 3004 | && bfd_link_executable (info) && !info->nointerp) |
cbe79dfe | 3005 | { |
3d4d4302 | 3006 | sec = bfd_get_linker_section (dynobj, ".interp"); |
cbe79dfe TG |
3007 | BFD_ASSERT (sec != NULL); |
3008 | sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; | |
3009 | sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; | |
3010 | } | |
3011 | ||
3012 | /* Allocate the GOT entries. */ | |
3013 | ||
3014 | if (ia64_info->root.sgot) | |
3015 | { | |
3016 | data.ofs = 0; | |
3017 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); | |
3018 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); | |
3019 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); | |
3020 | ia64_info->root.sgot->size = data.ofs; | |
3021 | } | |
3022 | ||
3023 | /* Allocate the FPTR entries. */ | |
3024 | ||
3025 | if (ia64_info->fptr_sec) | |
3026 | { | |
3027 | data.ofs = 0; | |
3028 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data); | |
3029 | ia64_info->fptr_sec->size = data.ofs; | |
3030 | } | |
3031 | ||
3032 | /* Now that we've seen all of the input files, we can decide which | |
3033 | symbols need plt entries. Allocate the minimal PLT entries first. | |
3034 | We do this even though dynamic_sections_created may be FALSE, because | |
3035 | this has the side-effect of clearing want_plt and want_plt2. */ | |
3036 | ||
3037 | data.ofs = 0; | |
3038 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data); | |
3039 | ||
3040 | ia64_info->minplt_entries = 0; | |
3041 | if (data.ofs) | |
3042 | { | |
3043 | ia64_info->minplt_entries | |
3044 | = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; | |
3045 | } | |
3046 | ||
3047 | /* Align the pointer for the plt2 entries. */ | |
3048 | data.ofs = (data.ofs + 31) & (bfd_vma) -32; | |
3049 | ||
3050 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data); | |
3051 | if (data.ofs != 0 || ia64_info->root.dynamic_sections_created) | |
3052 | { | |
3053 | /* FIXME: we always reserve the memory for dynamic linker even if | |
3054 | there are no PLT entries since dynamic linker may assume the | |
3055 | reserved memory always exists. */ | |
3056 | ||
3057 | BFD_ASSERT (ia64_info->root.dynamic_sections_created); | |
3058 | ||
3059 | ia64_info->root.splt->size = data.ofs; | |
3060 | ||
3061 | /* If we've got a .plt, we need some extra memory for the dynamic | |
3062 | linker. We stuff these in .got.plt. */ | |
ce558b89 | 3063 | ia64_info->root.sgotplt->size = 8 * PLT_RESERVED_WORDS; |
cbe79dfe TG |
3064 | } |
3065 | ||
3066 | /* Allocate the PLTOFF entries. */ | |
3067 | ||
3068 | if (ia64_info->pltoff_sec) | |
3069 | { | |
3070 | data.ofs = 0; | |
3071 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data); | |
3072 | ia64_info->pltoff_sec->size = data.ofs; | |
3073 | } | |
3074 | ||
3075 | if (ia64_info->root.dynamic_sections_created) | |
3076 | { | |
3077 | /* Allocate space for the dynamic relocations that turned out to be | |
3078 | required. */ | |
3079 | ||
0e1862bb | 3080 | if (bfd_link_pic (info) && ia64_info->self_dtpmod_offset != (bfd_vma) -1) |
cbe79dfe TG |
3081 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); |
3082 | data.only_got = FALSE; | |
3083 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data); | |
3084 | } | |
3085 | ||
3086 | /* We have now determined the sizes of the various dynamic sections. | |
3087 | Allocate memory for them. */ | |
3088 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) | |
3089 | { | |
3090 | bfd_boolean strip; | |
3091 | ||
3092 | if (!(sec->flags & SEC_LINKER_CREATED)) | |
3093 | continue; | |
3094 | ||
3095 | /* If we don't need this section, strip it from the output file. | |
3096 | There were several sections primarily related to dynamic | |
3097 | linking that must be create before the linker maps input | |
3098 | sections to output sections. The linker does that before | |
3099 | bfd_elf_size_dynamic_sections is called, and it is that | |
3100 | function which decides whether anything needs to go into | |
3101 | these sections. */ | |
3102 | ||
3103 | strip = (sec->size == 0); | |
3104 | ||
3105 | if (sec == ia64_info->root.sgot) | |
3106 | strip = FALSE; | |
3107 | else if (sec == ia64_info->root.srelgot) | |
3108 | { | |
3109 | if (strip) | |
3110 | ia64_info->root.srelgot = NULL; | |
3111 | else | |
3112 | /* We use the reloc_count field as a counter if we need to | |
3113 | copy relocs into the output file. */ | |
3114 | sec->reloc_count = 0; | |
3115 | } | |
3116 | else if (sec == ia64_info->fptr_sec) | |
3117 | { | |
3118 | if (strip) | |
3119 | ia64_info->fptr_sec = NULL; | |
3120 | } | |
3121 | else if (sec == ia64_info->rel_fptr_sec) | |
3122 | { | |
3123 | if (strip) | |
3124 | ia64_info->rel_fptr_sec = NULL; | |
3125 | else | |
3126 | /* We use the reloc_count field as a counter if we need to | |
3127 | copy relocs into the output file. */ | |
3128 | sec->reloc_count = 0; | |
3129 | } | |
3130 | else if (sec == ia64_info->root.splt) | |
3131 | { | |
3132 | if (strip) | |
3133 | ia64_info->root.splt = NULL; | |
3134 | } | |
3135 | else if (sec == ia64_info->pltoff_sec) | |
3136 | { | |
3137 | if (strip) | |
3138 | ia64_info->pltoff_sec = NULL; | |
3139 | } | |
3140 | else if (sec == ia64_info->rel_pltoff_sec) | |
3141 | { | |
3142 | if (strip) | |
3143 | ia64_info->rel_pltoff_sec = NULL; | |
3144 | else | |
3145 | { | |
3146 | relplt = TRUE; | |
3147 | /* We use the reloc_count field as a counter if we need to | |
3148 | copy relocs into the output file. */ | |
3149 | sec->reloc_count = 0; | |
3150 | } | |
3151 | } | |
3152 | else | |
3153 | { | |
3154 | const char *name; | |
3155 | ||
3156 | /* It's OK to base decisions on the section name, because none | |
3157 | of the dynobj section names depend upon the input files. */ | |
3158 | name = bfd_get_section_name (dynobj, sec); | |
3159 | ||
3160 | if (strcmp (name, ".got.plt") == 0) | |
3161 | strip = FALSE; | |
3162 | else if (CONST_STRNEQ (name, ".rel")) | |
3163 | { | |
3164 | if (!strip) | |
3165 | { | |
3166 | /* We use the reloc_count field as a counter if we need to | |
3167 | copy relocs into the output file. */ | |
3168 | sec->reloc_count = 0; | |
3169 | } | |
3170 | } | |
3171 | else | |
3172 | continue; | |
3173 | } | |
3174 | ||
3175 | if (strip) | |
3176 | sec->flags |= SEC_EXCLUDE; | |
3177 | else | |
3178 | { | |
3179 | /* Allocate memory for the section contents. */ | |
3180 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); | |
3181 | if (sec->contents == NULL && sec->size != 0) | |
3182 | return FALSE; | |
3183 | } | |
3184 | } | |
3185 | ||
ce558b89 | 3186 | if (ia64_info->root.dynamic_sections_created) |
cbe79dfe TG |
3187 | { |
3188 | /* Add some entries to the .dynamic section. We fill in the values | |
3189 | later (in finish_dynamic_sections) but we must add the entries now | |
3190 | so that we get the correct size for the .dynamic section. */ | |
3191 | ||
0e1862bb | 3192 | if (bfd_link_executable (info)) |
cbe79dfe TG |
3193 | { |
3194 | /* The DT_DEBUG entry is filled in by the dynamic linker and used | |
3195 | by the debugger. */ | |
3196 | #define add_dynamic_entry(TAG, VAL) \ | |
3197 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3198 | ||
3199 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
3200 | return FALSE; | |
3201 | } | |
3202 | ||
3203 | if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0)) | |
3204 | return FALSE; | |
3205 | if (!add_dynamic_entry (DT_PLTGOT, 0)) | |
3206 | return FALSE; | |
3207 | ||
3208 | if (relplt) | |
3209 | { | |
3210 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) | |
3211 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3212 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
3213 | return FALSE; | |
3214 | } | |
3215 | ||
3216 | if (!add_dynamic_entry (DT_RELA, 0) | |
3217 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3218 | || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela))) | |
3219 | return FALSE; | |
3220 | ||
3221 | if (ia64_info->reltext) | |
3222 | { | |
3223 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
3224 | return FALSE; | |
3225 | info->flags |= DF_TEXTREL; | |
3226 | } | |
3227 | } | |
3228 | ||
3229 | /* ??? Perhaps force __gp local. */ | |
3230 | ||
3231 | return TRUE; | |
3232 | } | |
3233 | ||
3234 | static void | |
3235 | elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info, | |
3236 | asection *sec, asection *srel, | |
3237 | bfd_vma offset, unsigned int type, | |
3238 | long dynindx, bfd_vma addend) | |
3239 | { | |
3240 | Elf_Internal_Rela outrel; | |
3241 | bfd_byte *loc; | |
3242 | ||
3243 | BFD_ASSERT (dynindx != -1); | |
3244 | outrel.r_info = ELFNN_R_INFO (dynindx, type); | |
3245 | outrel.r_addend = addend; | |
3246 | outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
3247 | if (outrel.r_offset >= (bfd_vma) -2) | |
3248 | { | |
3249 | /* Run for the hills. We shouldn't be outputting a relocation | |
3250 | for this. So do what everyone else does and output a no-op. */ | |
3251 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
3252 | outrel.r_addend = 0; | |
3253 | outrel.r_offset = 0; | |
3254 | } | |
3255 | else | |
3256 | outrel.r_offset += sec->output_section->vma + sec->output_offset; | |
3257 | ||
3258 | loc = srel->contents; | |
3259 | loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela); | |
3260 | bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); | |
3261 | BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size); | |
3262 | } | |
3263 | ||
3264 | /* Store an entry for target address TARGET_ADDR in the linkage table | |
3265 | and return the gp-relative address of the linkage table entry. */ | |
3266 | ||
3267 | static bfd_vma | |
3268 | set_got_entry (bfd *abfd, struct bfd_link_info *info, | |
3269 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3270 | long dynindx, bfd_vma addend, bfd_vma value, | |
3271 | unsigned int dyn_r_type) | |
3272 | { | |
3273 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3274 | asection *got_sec; | |
3275 | bfd_boolean done; | |
3276 | bfd_vma got_offset; | |
3277 | ||
3278 | ia64_info = elfNN_ia64_hash_table (info); | |
3279 | if (ia64_info == NULL) | |
3280 | return 0; | |
3281 | ||
3282 | got_sec = ia64_info->root.sgot; | |
3283 | ||
3284 | switch (dyn_r_type) | |
3285 | { | |
3286 | case R_IA64_TPREL64LSB: | |
3287 | done = dyn_i->tprel_done; | |
3288 | dyn_i->tprel_done = TRUE; | |
3289 | got_offset = dyn_i->tprel_offset; | |
3290 | break; | |
3291 | case R_IA64_DTPMOD64LSB: | |
3292 | if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset) | |
3293 | { | |
3294 | done = dyn_i->dtpmod_done; | |
3295 | dyn_i->dtpmod_done = TRUE; | |
3296 | } | |
3297 | else | |
3298 | { | |
3299 | done = ia64_info->self_dtpmod_done; | |
3300 | ia64_info->self_dtpmod_done = TRUE; | |
3301 | dynindx = 0; | |
3302 | } | |
3303 | got_offset = dyn_i->dtpmod_offset; | |
3304 | break; | |
3305 | case R_IA64_DTPREL32LSB: | |
3306 | case R_IA64_DTPREL64LSB: | |
3307 | done = dyn_i->dtprel_done; | |
3308 | dyn_i->dtprel_done = TRUE; | |
3309 | got_offset = dyn_i->dtprel_offset; | |
3310 | break; | |
3311 | default: | |
3312 | done = dyn_i->got_done; | |
3313 | dyn_i->got_done = TRUE; | |
3314 | got_offset = dyn_i->got_offset; | |
3315 | break; | |
3316 | } | |
3317 | ||
3318 | BFD_ASSERT ((got_offset & 7) == 0); | |
3319 | ||
3320 | if (! done) | |
3321 | { | |
3322 | /* Store the target address in the linkage table entry. */ | |
3323 | bfd_put_64 (abfd, value, got_sec->contents + got_offset); | |
3324 | ||
3325 | /* Install a dynamic relocation if needed. */ | |
0e1862bb | 3326 | if (((bfd_link_pic (info) |
cbe79dfe | 3327 | && (!dyn_i->h |
db41f6eb L |
3328 | || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT |
3329 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h)) | |
cbe79dfe TG |
3330 | || dyn_i->h->root.type != bfd_link_hash_undefweak) |
3331 | && dyn_r_type != R_IA64_DTPREL32LSB | |
3332 | && dyn_r_type != R_IA64_DTPREL64LSB) | |
3333 | || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type) | |
3334 | || (dynindx != -1 | |
3335 | && (dyn_r_type == R_IA64_FPTR32LSB | |
3336 | || dyn_r_type == R_IA64_FPTR64LSB))) | |
3337 | && (!dyn_i->want_ltoff_fptr | |
0e1862bb | 3338 | || !bfd_link_pie (info) |
cbe79dfe TG |
3339 | || !dyn_i->h |
3340 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) | |
3341 | { | |
3342 | if (dynindx == -1 | |
3343 | && dyn_r_type != R_IA64_TPREL64LSB | |
3344 | && dyn_r_type != R_IA64_DTPMOD64LSB | |
3345 | && dyn_r_type != R_IA64_DTPREL32LSB | |
3346 | && dyn_r_type != R_IA64_DTPREL64LSB) | |
3347 | { | |
3348 | dyn_r_type = R_IA64_RELNNLSB; | |
3349 | dynindx = 0; | |
3350 | addend = value; | |
3351 | } | |
3352 | ||
3353 | if (bfd_big_endian (abfd)) | |
3354 | { | |
3355 | switch (dyn_r_type) | |
3356 | { | |
3357 | case R_IA64_REL32LSB: | |
3358 | dyn_r_type = R_IA64_REL32MSB; | |
3359 | break; | |
3360 | case R_IA64_DIR32LSB: | |
3361 | dyn_r_type = R_IA64_DIR32MSB; | |
3362 | break; | |
3363 | case R_IA64_FPTR32LSB: | |
3364 | dyn_r_type = R_IA64_FPTR32MSB; | |
3365 | break; | |
3366 | case R_IA64_DTPREL32LSB: | |
3367 | dyn_r_type = R_IA64_DTPREL32MSB; | |
3368 | break; | |
3369 | case R_IA64_REL64LSB: | |
3370 | dyn_r_type = R_IA64_REL64MSB; | |
3371 | break; | |
3372 | case R_IA64_DIR64LSB: | |
3373 | dyn_r_type = R_IA64_DIR64MSB; | |
3374 | break; | |
3375 | case R_IA64_FPTR64LSB: | |
3376 | dyn_r_type = R_IA64_FPTR64MSB; | |
3377 | break; | |
3378 | case R_IA64_TPREL64LSB: | |
3379 | dyn_r_type = R_IA64_TPREL64MSB; | |
3380 | break; | |
3381 | case R_IA64_DTPMOD64LSB: | |
3382 | dyn_r_type = R_IA64_DTPMOD64MSB; | |
3383 | break; | |
3384 | case R_IA64_DTPREL64LSB: | |
3385 | dyn_r_type = R_IA64_DTPREL64MSB; | |
3386 | break; | |
3387 | default: | |
3388 | BFD_ASSERT (FALSE); | |
3389 | break; | |
3390 | } | |
3391 | } | |
3392 | ||
3393 | elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec, | |
3394 | ia64_info->root.srelgot, | |
3395 | got_offset, dyn_r_type, | |
3396 | dynindx, addend); | |
3397 | } | |
3398 | } | |
3399 | ||
3400 | /* Return the address of the linkage table entry. */ | |
3401 | value = (got_sec->output_section->vma | |
3402 | + got_sec->output_offset | |
3403 | + got_offset); | |
3404 | ||
3405 | return value; | |
3406 | } | |
3407 | ||
3408 | /* Fill in a function descriptor consisting of the function's code | |
3409 | address and its global pointer. Return the descriptor's address. */ | |
3410 | ||
3411 | static bfd_vma | |
3412 | set_fptr_entry (bfd *abfd, struct bfd_link_info *info, | |
3413 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3414 | bfd_vma value) | |
3415 | { | |
3416 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3417 | asection *fptr_sec; | |
3418 | ||
3419 | ia64_info = elfNN_ia64_hash_table (info); | |
3420 | if (ia64_info == NULL) | |
3421 | return 0; | |
3422 | ||
3423 | fptr_sec = ia64_info->fptr_sec; | |
3424 | ||
3425 | if (!dyn_i->fptr_done) | |
3426 | { | |
3427 | dyn_i->fptr_done = 1; | |
3428 | ||
3429 | /* Fill in the function descriptor. */ | |
3430 | bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset); | |
3431 | bfd_put_64 (abfd, _bfd_get_gp_value (abfd), | |
3432 | fptr_sec->contents + dyn_i->fptr_offset + 8); | |
3433 | if (ia64_info->rel_fptr_sec) | |
3434 | { | |
3435 | Elf_Internal_Rela outrel; | |
3436 | bfd_byte *loc; | |
3437 | ||
3438 | if (bfd_little_endian (abfd)) | |
3439 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB); | |
3440 | else | |
3441 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB); | |
3442 | outrel.r_addend = value; | |
3443 | outrel.r_offset = (fptr_sec->output_section->vma | |
3444 | + fptr_sec->output_offset | |
3445 | + dyn_i->fptr_offset); | |
3446 | loc = ia64_info->rel_fptr_sec->contents; | |
3447 | loc += ia64_info->rel_fptr_sec->reloc_count++ | |
3448 | * sizeof (ElfNN_External_Rela); | |
3449 | bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); | |
3450 | } | |
3451 | } | |
3452 | ||
3453 | /* Return the descriptor's address. */ | |
3454 | value = (fptr_sec->output_section->vma | |
3455 | + fptr_sec->output_offset | |
3456 | + dyn_i->fptr_offset); | |
3457 | ||
3458 | return value; | |
3459 | } | |
3460 | ||
3461 | /* Fill in a PLTOFF entry consisting of the function's code address | |
3462 | and its global pointer. Return the descriptor's address. */ | |
3463 | ||
3464 | static bfd_vma | |
3465 | set_pltoff_entry (bfd *abfd, struct bfd_link_info *info, | |
3466 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3467 | bfd_vma value, bfd_boolean is_plt) | |
3468 | { | |
3469 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3470 | asection *pltoff_sec; | |
3471 | ||
3472 | ia64_info = elfNN_ia64_hash_table (info); | |
3473 | if (ia64_info == NULL) | |
3474 | return 0; | |
3475 | ||
3476 | pltoff_sec = ia64_info->pltoff_sec; | |
3477 | ||
3478 | /* Don't do anything if this symbol uses a real PLT entry. In | |
3479 | that case, we'll fill this in during finish_dynamic_symbol. */ | |
3480 | if ((! dyn_i->want_plt || is_plt) | |
3481 | && !dyn_i->pltoff_done) | |
3482 | { | |
3483 | bfd_vma gp = _bfd_get_gp_value (abfd); | |
3484 | ||
3485 | /* Fill in the function descriptor. */ | |
3486 | bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset); | |
3487 | bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8); | |
3488 | ||
3489 | /* Install dynamic relocations if needed. */ | |
3490 | if (!is_plt | |
0e1862bb | 3491 | && bfd_link_pic (info) |
cbe79dfe | 3492 | && (!dyn_i->h |
db41f6eb L |
3493 | || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT |
3494 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h)) | |
cbe79dfe TG |
3495 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) |
3496 | { | |
3497 | unsigned int dyn_r_type; | |
3498 | ||
3499 | if (bfd_big_endian (abfd)) | |
3500 | dyn_r_type = R_IA64_RELNNMSB; | |
3501 | else | |
3502 | dyn_r_type = R_IA64_RELNNLSB; | |
3503 | ||
3504 | elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, | |
3505 | ia64_info->rel_pltoff_sec, | |
3506 | dyn_i->pltoff_offset, | |
3507 | dyn_r_type, 0, value); | |
3508 | elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, | |
3509 | ia64_info->rel_pltoff_sec, | |
3510 | dyn_i->pltoff_offset + ARCH_SIZE / 8, | |
3511 | dyn_r_type, 0, gp); | |
3512 | } | |
3513 | ||
3514 | dyn_i->pltoff_done = 1; | |
3515 | } | |
3516 | ||
3517 | /* Return the descriptor's address. */ | |
3518 | value = (pltoff_sec->output_section->vma | |
3519 | + pltoff_sec->output_offset | |
3520 | + dyn_i->pltoff_offset); | |
3521 | ||
3522 | return value; | |
3523 | } | |
3524 | ||
3525 | /* Return the base VMA address which should be subtracted from real addresses | |
3526 | when resolving @tprel() relocation. | |
3527 | Main program TLS (whose template starts at PT_TLS p_vaddr) | |
3528 | is assigned offset round(2 * size of pointer, PT_TLS p_align). */ | |
3529 | ||
3530 | static bfd_vma | |
3531 | elfNN_ia64_tprel_base (struct bfd_link_info *info) | |
3532 | { | |
3533 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
3534 | return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4, | |
3535 | tls_sec->alignment_power); | |
3536 | } | |
3537 | ||
3538 | /* Return the base VMA address which should be subtracted from real addresses | |
3539 | when resolving @dtprel() relocation. | |
3540 | This is PT_TLS segment p_vaddr. */ | |
3541 | ||
3542 | static bfd_vma | |
3543 | elfNN_ia64_dtprel_base (struct bfd_link_info *info) | |
3544 | { | |
3545 | return elf_hash_table (info)->tls_sec->vma; | |
3546 | } | |
3547 | ||
3548 | /* Called through qsort to sort the .IA_64.unwind section during a | |
3549 | non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd | |
3550 | to the output bfd so we can do proper endianness frobbing. */ | |
3551 | ||
3552 | static bfd *elfNN_ia64_unwind_entry_compare_bfd; | |
3553 | ||
3554 | static int | |
2c3fc389 | 3555 | elfNN_ia64_unwind_entry_compare (const void * a, const void * b) |
cbe79dfe TG |
3556 | { |
3557 | bfd_vma av, bv; | |
3558 | ||
3559 | av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a); | |
3560 | bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b); | |
3561 | ||
3562 | return (av < bv ? -1 : av > bv ? 1 : 0); | |
3563 | } | |
3564 | ||
3565 | /* Make sure we've got ourselves a nice fat __gp value. */ | |
3566 | static bfd_boolean | |
3567 | elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final) | |
3568 | { | |
3569 | bfd_vma min_vma = (bfd_vma) -1, max_vma = 0; | |
3570 | bfd_vma min_short_vma = min_vma, max_short_vma = 0; | |
3571 | struct elf_link_hash_entry *gp; | |
3572 | bfd_vma gp_val; | |
3573 | asection *os; | |
3574 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3575 | ||
3576 | ia64_info = elfNN_ia64_hash_table (info); | |
3577 | if (ia64_info == NULL) | |
3578 | return FALSE; | |
3579 | ||
3580 | /* Find the min and max vma of all sections marked short. Also collect | |
3581 | min and max vma of any type, for use in selecting a nice gp. */ | |
3582 | for (os = abfd->sections; os ; os = os->next) | |
3583 | { | |
3584 | bfd_vma lo, hi; | |
3585 | ||
3586 | if ((os->flags & SEC_ALLOC) == 0) | |
3587 | continue; | |
3588 | ||
3589 | lo = os->vma; | |
3590 | /* When this function is called from elfNN_ia64_final_link | |
3591 | the correct value to use is os->size. When called from | |
3592 | elfNN_ia64_relax_section we are in the middle of section | |
3593 | sizing; some sections will already have os->size set, others | |
3594 | will have os->size zero and os->rawsize the previous size. */ | |
3595 | hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size); | |
3596 | if (hi < lo) | |
3597 | hi = (bfd_vma) -1; | |
3598 | ||
3599 | if (min_vma > lo) | |
3600 | min_vma = lo; | |
3601 | if (max_vma < hi) | |
3602 | max_vma = hi; | |
3603 | if (os->flags & SEC_SMALL_DATA) | |
3604 | { | |
3605 | if (min_short_vma > lo) | |
3606 | min_short_vma = lo; | |
3607 | if (max_short_vma < hi) | |
3608 | max_short_vma = hi; | |
3609 | } | |
3610 | } | |
3611 | ||
3612 | if (ia64_info->min_short_sec) | |
3613 | { | |
d17fe7b7 | 3614 | if (min_short_vma |
cbe79dfe TG |
3615 | > (ia64_info->min_short_sec->vma |
3616 | + ia64_info->min_short_offset)) | |
3617 | min_short_vma = (ia64_info->min_short_sec->vma | |
3618 | + ia64_info->min_short_offset); | |
3619 | if (max_short_vma | |
3620 | < (ia64_info->max_short_sec->vma | |
3621 | + ia64_info->max_short_offset)) | |
3622 | max_short_vma = (ia64_info->max_short_sec->vma | |
3623 | + ia64_info->max_short_offset); | |
3624 | } | |
3625 | ||
3626 | /* See if the user wants to force a value. */ | |
3627 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
3628 | FALSE, FALSE); | |
3629 | ||
3630 | if (gp | |
3631 | && (gp->root.type == bfd_link_hash_defined | |
3632 | || gp->root.type == bfd_link_hash_defweak)) | |
3633 | { | |
3634 | asection *gp_sec = gp->root.u.def.section; | |
3635 | gp_val = (gp->root.u.def.value | |
3636 | + gp_sec->output_section->vma | |
3637 | + gp_sec->output_offset); | |
3638 | } | |
3639 | else | |
3640 | { | |
3641 | /* Pick a sensible value. */ | |
3642 | ||
3643 | if (ia64_info->min_short_sec) | |
3644 | { | |
3645 | bfd_vma short_range = max_short_vma - min_short_vma; | |
3646 | ||
3647 | /* If min_short_sec is set, pick one in the middle bewteen | |
3648 | min_short_vma and max_short_vma. */ | |
3649 | if (short_range >= 0x400000) | |
3650 | goto overflow; | |
3651 | gp_val = min_short_vma + short_range / 2; | |
3652 | } | |
3653 | else | |
3654 | { | |
3655 | asection *got_sec = ia64_info->root.sgot; | |
3656 | ||
3657 | /* Start with just the address of the .got. */ | |
3658 | if (got_sec) | |
3659 | gp_val = got_sec->output_section->vma; | |
3660 | else if (max_short_vma != 0) | |
3661 | gp_val = min_short_vma; | |
3662 | else if (max_vma - min_vma < 0x200000) | |
3663 | gp_val = min_vma; | |
3664 | else | |
3665 | gp_val = max_vma - 0x200000 + 8; | |
3666 | } | |
3667 | ||
3668 | /* If it is possible to address the entire image, but we | |
3669 | don't with the choice above, adjust. */ | |
3670 | if (max_vma - min_vma < 0x400000 | |
3671 | && (max_vma - gp_val >= 0x200000 | |
3672 | || gp_val - min_vma > 0x200000)) | |
3673 | gp_val = min_vma + 0x200000; | |
3674 | else if (max_short_vma != 0) | |
3675 | { | |
3676 | /* If we don't cover all the short data, adjust. */ | |
3677 | if (max_short_vma - gp_val >= 0x200000) | |
3678 | gp_val = min_short_vma + 0x200000; | |
3679 | ||
3680 | /* If we're addressing stuff past the end, adjust back. */ | |
3681 | if (gp_val > max_vma) | |
3682 | gp_val = max_vma - 0x200000 + 8; | |
3683 | } | |
3684 | } | |
3685 | ||
3686 | /* Validate whether all SHF_IA_64_SHORT sections are within | |
3687 | range of the chosen GP. */ | |
3688 | ||
3689 | if (max_short_vma != 0) | |
3690 | { | |
3691 | if (max_short_vma - min_short_vma >= 0x400000) | |
3692 | { | |
3693 | overflow: | |
4eca0228 | 3694 | _bfd_error_handler |
695344c0 | 3695 | /* xgettext:c-format */ |
d42c267e AM |
3696 | (_("%B: short data segment overflowed (%#Lx >= 0x400000)"), |
3697 | abfd, max_short_vma - min_short_vma); | |
cbe79dfe TG |
3698 | return FALSE; |
3699 | } | |
3700 | else if ((gp_val > min_short_vma | |
3701 | && gp_val - min_short_vma > 0x200000) | |
3702 | || (gp_val < max_short_vma | |
3703 | && max_short_vma - gp_val >= 0x200000)) | |
3704 | { | |
4eca0228 | 3705 | _bfd_error_handler |
dae82561 | 3706 | (_("%B: __gp does not cover short data segment"), abfd); |
cbe79dfe TG |
3707 | return FALSE; |
3708 | } | |
3709 | } | |
3710 | ||
3711 | _bfd_set_gp_value (abfd, gp_val); | |
3712 | ||
3713 | return TRUE; | |
3714 | } | |
3715 | ||
3716 | static bfd_boolean | |
3717 | elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info) | |
3718 | { | |
3719 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3720 | asection *unwind_output_sec; | |
3721 | ||
3722 | ia64_info = elfNN_ia64_hash_table (info); | |
3723 | if (ia64_info == NULL) | |
3724 | return FALSE; | |
3725 | ||
3726 | /* Make sure we've got ourselves a nice fat __gp value. */ | |
0e1862bb | 3727 | if (!bfd_link_relocatable (info)) |
cbe79dfe TG |
3728 | { |
3729 | bfd_vma gp_val; | |
3730 | struct elf_link_hash_entry *gp; | |
3731 | ||
3732 | /* We assume after gp is set, section size will only decrease. We | |
3733 | need to adjust gp for it. */ | |
3734 | _bfd_set_gp_value (abfd, 0); | |
3735 | if (! elfNN_ia64_choose_gp (abfd, info, TRUE)) | |
3736 | return FALSE; | |
3737 | gp_val = _bfd_get_gp_value (abfd); | |
3738 | ||
3739 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
3740 | FALSE, FALSE); | |
3741 | if (gp) | |
3742 | { | |
3743 | gp->root.type = bfd_link_hash_defined; | |
3744 | gp->root.u.def.value = gp_val; | |
3745 | gp->root.u.def.section = bfd_abs_section_ptr; | |
3746 | } | |
3747 | } | |
3748 | ||
3749 | /* If we're producing a final executable, we need to sort the contents | |
3750 | of the .IA_64.unwind section. Force this section to be relocated | |
3751 | into memory rather than written immediately to the output file. */ | |
3752 | unwind_output_sec = NULL; | |
0e1862bb | 3753 | if (!bfd_link_relocatable (info)) |
cbe79dfe TG |
3754 | { |
3755 | asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); | |
3756 | if (s) | |
3757 | { | |
3758 | unwind_output_sec = s->output_section; | |
3759 | unwind_output_sec->contents | |
3760 | = bfd_malloc (unwind_output_sec->size); | |
3761 | if (unwind_output_sec->contents == NULL) | |
3762 | return FALSE; | |
3763 | } | |
3764 | } | |
3765 | ||
3766 | /* Invoke the regular ELF backend linker to do all the work. */ | |
3767 | if (!bfd_elf_final_link (abfd, info)) | |
3768 | return FALSE; | |
3769 | ||
3770 | if (unwind_output_sec) | |
3771 | { | |
3772 | elfNN_ia64_unwind_entry_compare_bfd = abfd; | |
3773 | qsort (unwind_output_sec->contents, | |
3774 | (size_t) (unwind_output_sec->size / 24), | |
3775 | 24, | |
3776 | elfNN_ia64_unwind_entry_compare); | |
3777 | ||
3778 | if (! bfd_set_section_contents (abfd, unwind_output_sec, | |
3779 | unwind_output_sec->contents, (bfd_vma) 0, | |
3780 | unwind_output_sec->size)) | |
3781 | return FALSE; | |
3782 | } | |
3783 | ||
3784 | return TRUE; | |
3785 | } | |
3786 | ||
3787 | static bfd_boolean | |
3788 | elfNN_ia64_relocate_section (bfd *output_bfd, | |
3789 | struct bfd_link_info *info, | |
3790 | bfd *input_bfd, | |
3791 | asection *input_section, | |
3792 | bfd_byte *contents, | |
3793 | Elf_Internal_Rela *relocs, | |
3794 | Elf_Internal_Sym *local_syms, | |
3795 | asection **local_sections) | |
3796 | { | |
3797 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3798 | Elf_Internal_Shdr *symtab_hdr; | |
3799 | Elf_Internal_Rela *rel; | |
3800 | Elf_Internal_Rela *relend; | |
3801 | asection *srel; | |
3802 | bfd_boolean ret_val = TRUE; /* for non-fatal errors */ | |
3803 | bfd_vma gp_val; | |
3804 | ||
3805 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3806 | ia64_info = elfNN_ia64_hash_table (info); | |
3807 | if (ia64_info == NULL) | |
3808 | return FALSE; | |
3809 | ||
3810 | /* Infect various flags from the input section to the output section. */ | |
0e1862bb | 3811 | if (bfd_link_relocatable (info)) |
cbe79dfe TG |
3812 | { |
3813 | bfd_vma flags; | |
3814 | ||
3815 | flags = elf_section_data(input_section)->this_hdr.sh_flags; | |
3816 | flags &= SHF_IA_64_NORECOV; | |
3817 | ||
3818 | elf_section_data(input_section->output_section) | |
3819 | ->this_hdr.sh_flags |= flags; | |
3820 | } | |
3821 | ||
3822 | gp_val = _bfd_get_gp_value (output_bfd); | |
3823 | srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE); | |
3824 | ||
3825 | rel = relocs; | |
3826 | relend = relocs + input_section->reloc_count; | |
3827 | for (; rel < relend; ++rel) | |
3828 | { | |
3829 | struct elf_link_hash_entry *h; | |
3830 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
3831 | bfd_reloc_status_type r; | |
3832 | reloc_howto_type *howto; | |
3833 | unsigned long r_symndx; | |
3834 | Elf_Internal_Sym *sym; | |
3835 | unsigned int r_type; | |
3836 | bfd_vma value; | |
3837 | asection *sym_sec; | |
3838 | bfd_byte *hit_addr; | |
3839 | bfd_boolean dynamic_symbol_p; | |
3840 | bfd_boolean undef_weak_ref; | |
3841 | ||
3842 | r_type = ELFNN_R_TYPE (rel->r_info); | |
3843 | if (r_type > R_IA64_MAX_RELOC_CODE) | |
3844 | { | |
4eca0228 | 3845 | _bfd_error_handler |
695344c0 | 3846 | /* xgettext:c-format */ |
63a5468a | 3847 | (_("%B: unknown relocation type %d"), input_bfd, (int) r_type); |
cbe79dfe TG |
3848 | bfd_set_error (bfd_error_bad_value); |
3849 | ret_val = FALSE; | |
3850 | continue; | |
3851 | } | |
3852 | ||
3853 | howto = ia64_elf_lookup_howto (r_type); | |
3854 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
3855 | h = NULL; | |
3856 | sym = NULL; | |
3857 | sym_sec = NULL; | |
3858 | undef_weak_ref = FALSE; | |
3859 | ||
3860 | if (r_symndx < symtab_hdr->sh_info) | |
3861 | { | |
3862 | /* Reloc against local symbol. */ | |
3863 | asection *msec; | |
3864 | sym = local_syms + r_symndx; | |
3865 | sym_sec = local_sections[r_symndx]; | |
3866 | msec = sym_sec; | |
3867 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
0e1862bb | 3868 | if (!bfd_link_relocatable (info) |
cbe79dfe TG |
3869 | && (sym_sec->flags & SEC_MERGE) != 0 |
3870 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
dbaa2011 | 3871 | && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE) |
d17fe7b7 | 3872 | { |
cbe79dfe TG |
3873 | struct elfNN_ia64_local_hash_entry *loc_h; |
3874 | ||
3875 | loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE); | |
3876 | if (loc_h && ! loc_h->sec_merge_done) | |
3877 | { | |
3878 | struct elfNN_ia64_dyn_sym_info *dynent; | |
3879 | unsigned int count; | |
3880 | ||
3881 | for (count = loc_h->count, dynent = loc_h->info; | |
3882 | count != 0; | |
3883 | count--, dynent++) | |
3884 | { | |
3885 | msec = sym_sec; | |
3886 | dynent->addend = | |
3887 | _bfd_merged_section_offset (output_bfd, &msec, | |
3888 | elf_section_data (msec)-> | |
3889 | sec_info, | |
3890 | sym->st_value | |
3891 | + dynent->addend); | |
3892 | dynent->addend -= sym->st_value; | |
3893 | dynent->addend += msec->output_section->vma | |
3894 | + msec->output_offset | |
3895 | - sym_sec->output_section->vma | |
3896 | - sym_sec->output_offset; | |
3897 | } | |
3898 | ||
3899 | /* We may have introduced duplicated entries. We need | |
3900 | to remove them properly. */ | |
3901 | count = sort_dyn_sym_info (loc_h->info, loc_h->count); | |
3902 | if (count != loc_h->count) | |
3903 | { | |
3904 | loc_h->count = count; | |
3905 | loc_h->sorted_count = count; | |
3906 | } | |
3907 | ||
3908 | loc_h->sec_merge_done = 1; | |
3909 | } | |
3910 | } | |
3911 | } | |
3912 | else | |
3913 | { | |
3914 | bfd_boolean unresolved_reloc; | |
62d887d4 | 3915 | bfd_boolean warned, ignored; |
cbe79dfe TG |
3916 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
3917 | ||
3918 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
3919 | r_symndx, symtab_hdr, sym_hashes, | |
3920 | h, sym_sec, value, | |
62d887d4 | 3921 | unresolved_reloc, warned, ignored); |
cbe79dfe TG |
3922 | |
3923 | if (h->root.type == bfd_link_hash_undefweak) | |
3924 | undef_weak_ref = TRUE; | |
0e1862bb | 3925 | else if (warned || (ignored && bfd_link_executable (info))) |
cbe79dfe TG |
3926 | continue; |
3927 | } | |
3928 | ||
dbaa2011 | 3929 | if (sym_sec != NULL && discarded_section (sym_sec)) |
cbe79dfe | 3930 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3931 | rel, 1, relend, howto, 0, contents); |
cbe79dfe | 3932 | |
0e1862bb | 3933 | if (bfd_link_relocatable (info)) |
cbe79dfe TG |
3934 | continue; |
3935 | ||
3936 | hit_addr = contents + rel->r_offset; | |
3937 | value += rel->r_addend; | |
3938 | dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type); | |
3939 | ||
3940 | switch (r_type) | |
3941 | { | |
3942 | case R_IA64_NONE: | |
3943 | case R_IA64_LDXMOV: | |
3944 | continue; | |
3945 | ||
3946 | case R_IA64_IMM14: | |
3947 | case R_IA64_IMM22: | |
3948 | case R_IA64_IMM64: | |
3949 | case R_IA64_DIR32MSB: | |
3950 | case R_IA64_DIR32LSB: | |
3951 | case R_IA64_DIR64MSB: | |
3952 | case R_IA64_DIR64LSB: | |
3953 | /* Install a dynamic relocation for this reloc. */ | |
0e1862bb | 3954 | if ((dynamic_symbol_p || bfd_link_pic (info)) |
db41f6eb | 3955 | && !(h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
cbe79dfe TG |
3956 | && r_symndx != STN_UNDEF |
3957 | && (input_section->flags & SEC_ALLOC) != 0) | |
3958 | { | |
3959 | unsigned int dyn_r_type; | |
3960 | long dynindx; | |
3961 | bfd_vma addend; | |
3962 | ||
3963 | BFD_ASSERT (srel != NULL); | |
3964 | ||
3965 | switch (r_type) | |
3966 | { | |
3967 | case R_IA64_IMM14: | |
3968 | case R_IA64_IMM22: | |
3969 | case R_IA64_IMM64: | |
3970 | /* ??? People shouldn't be doing non-pic code in | |
3971 | shared libraries nor dynamic executables. */ | |
4eca0228 | 3972 | _bfd_error_handler |
695344c0 | 3973 | /* xgettext:c-format */ |
cbe79dfe TG |
3974 | (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"), |
3975 | input_bfd, | |
3976 | h ? h->root.root.string | |
3977 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3978 | sym_sec)); | |
3979 | ret_val = FALSE; | |
3980 | continue; | |
3981 | ||
3982 | default: | |
3983 | break; | |
3984 | } | |
3985 | ||
3986 | /* If we don't need dynamic symbol lookup, find a | |
3987 | matching RELATIVE relocation. */ | |
3988 | dyn_r_type = r_type; | |
3989 | if (dynamic_symbol_p) | |
3990 | { | |
3991 | dynindx = h->dynindx; | |
3992 | addend = rel->r_addend; | |
3993 | value = 0; | |
3994 | } | |
3995 | else | |
3996 | { | |
3997 | switch (r_type) | |
3998 | { | |
3999 | case R_IA64_DIR32MSB: | |
4000 | dyn_r_type = R_IA64_REL32MSB; | |
4001 | break; | |
4002 | case R_IA64_DIR32LSB: | |
4003 | dyn_r_type = R_IA64_REL32LSB; | |
4004 | break; | |
4005 | case R_IA64_DIR64MSB: | |
4006 | dyn_r_type = R_IA64_REL64MSB; | |
4007 | break; | |
4008 | case R_IA64_DIR64LSB: | |
4009 | dyn_r_type = R_IA64_REL64LSB; | |
4010 | break; | |
4011 | ||
4012 | default: | |
4013 | break; | |
4014 | } | |
4015 | dynindx = 0; | |
4016 | addend = value; | |
4017 | } | |
4018 | ||
4019 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4020 | srel, rel->r_offset, dyn_r_type, | |
4021 | dynindx, addend); | |
4022 | } | |
4023 | /* Fall through. */ | |
4024 | ||
4025 | case R_IA64_LTV32MSB: | |
4026 | case R_IA64_LTV32LSB: | |
4027 | case R_IA64_LTV64MSB: | |
4028 | case R_IA64_LTV64LSB: | |
4029 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4030 | break; | |
4031 | ||
4032 | case R_IA64_GPREL22: | |
4033 | case R_IA64_GPREL64I: | |
4034 | case R_IA64_GPREL32MSB: | |
4035 | case R_IA64_GPREL32LSB: | |
4036 | case R_IA64_GPREL64MSB: | |
4037 | case R_IA64_GPREL64LSB: | |
4038 | if (dynamic_symbol_p) | |
4039 | { | |
4eca0228 | 4040 | _bfd_error_handler |
695344c0 | 4041 | /* xgettext:c-format */ |
cbe79dfe TG |
4042 | (_("%B: @gprel relocation against dynamic symbol %s"), |
4043 | input_bfd, | |
4044 | h ? h->root.root.string | |
4045 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4046 | sym_sec)); | |
4047 | ret_val = FALSE; | |
4048 | continue; | |
4049 | } | |
4050 | value -= gp_val; | |
4051 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4052 | break; | |
4053 | ||
4054 | case R_IA64_LTOFF22: | |
4055 | case R_IA64_LTOFF22X: | |
4056 | case R_IA64_LTOFF64I: | |
4057 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4058 | value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1), | |
4059 | rel->r_addend, value, R_IA64_DIRNNLSB); | |
4060 | value -= gp_val; | |
4061 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4062 | break; | |
4063 | ||
4064 | case R_IA64_PLTOFF22: | |
4065 | case R_IA64_PLTOFF64I: | |
4066 | case R_IA64_PLTOFF64MSB: | |
4067 | case R_IA64_PLTOFF64LSB: | |
4068 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4069 | value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE); | |
4070 | value -= gp_val; | |
4071 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4072 | break; | |
4073 | ||
4074 | case R_IA64_FPTR64I: | |
4075 | case R_IA64_FPTR32MSB: | |
4076 | case R_IA64_FPTR32LSB: | |
4077 | case R_IA64_FPTR64MSB: | |
4078 | case R_IA64_FPTR64LSB: | |
4079 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4080 | if (dyn_i->want_fptr) | |
4081 | { | |
4082 | if (!undef_weak_ref) | |
4083 | value = set_fptr_entry (output_bfd, info, dyn_i, value); | |
4084 | } | |
0e1862bb | 4085 | if (!dyn_i->want_fptr || bfd_link_pie (info)) |
cbe79dfe TG |
4086 | { |
4087 | long dynindx; | |
4088 | unsigned int dyn_r_type = r_type; | |
4089 | bfd_vma addend = rel->r_addend; | |
4090 | ||
4091 | /* Otherwise, we expect the dynamic linker to create | |
4092 | the entry. */ | |
4093 | ||
4094 | if (dyn_i->want_fptr) | |
4095 | { | |
4096 | if (r_type == R_IA64_FPTR64I) | |
4097 | { | |
4098 | /* We can't represent this without a dynamic symbol. | |
4099 | Adjust the relocation to be against an output | |
4100 | section symbol, which are always present in the | |
4101 | dynamic symbol table. */ | |
4102 | /* ??? People shouldn't be doing non-pic code in | |
4103 | shared libraries. Hork. */ | |
4eca0228 | 4104 | _bfd_error_handler |
cbe79dfe TG |
4105 | (_("%B: linking non-pic code in a position independent executable"), |
4106 | input_bfd); | |
4107 | ret_val = FALSE; | |
4108 | continue; | |
4109 | } | |
4110 | dynindx = 0; | |
4111 | addend = value; | |
4112 | dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB; | |
4113 | } | |
4114 | else if (h) | |
4115 | { | |
4116 | if (h->dynindx != -1) | |
4117 | dynindx = h->dynindx; | |
4118 | else | |
4119 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4120 | (info, h->root.u.def.section->owner, | |
4121 | global_sym_index (h))); | |
4122 | value = 0; | |
4123 | } | |
4124 | else | |
4125 | { | |
4126 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4127 | (info, input_bfd, (long) r_symndx)); | |
4128 | value = 0; | |
4129 | } | |
4130 | ||
4131 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4132 | srel, rel->r_offset, dyn_r_type, | |
4133 | dynindx, addend); | |
4134 | } | |
4135 | ||
4136 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4137 | break; | |
4138 | ||
4139 | case R_IA64_LTOFF_FPTR22: | |
4140 | case R_IA64_LTOFF_FPTR64I: | |
4141 | case R_IA64_LTOFF_FPTR32MSB: | |
4142 | case R_IA64_LTOFF_FPTR32LSB: | |
4143 | case R_IA64_LTOFF_FPTR64MSB: | |
4144 | case R_IA64_LTOFF_FPTR64LSB: | |
4145 | { | |
4146 | long dynindx; | |
4147 | ||
4148 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4149 | if (dyn_i->want_fptr) | |
4150 | { | |
4151 | BFD_ASSERT (h == NULL || h->dynindx == -1); | |
4152 | if (!undef_weak_ref) | |
4153 | value = set_fptr_entry (output_bfd, info, dyn_i, value); | |
4154 | dynindx = -1; | |
4155 | } | |
4156 | else | |
4157 | { | |
4158 | /* Otherwise, we expect the dynamic linker to create | |
4159 | the entry. */ | |
4160 | if (h) | |
4161 | { | |
4162 | if (h->dynindx != -1) | |
4163 | dynindx = h->dynindx; | |
4164 | else | |
4165 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4166 | (info, h->root.u.def.section->owner, | |
4167 | global_sym_index (h))); | |
4168 | } | |
4169 | else | |
4170 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4171 | (info, input_bfd, (long) r_symndx)); | |
4172 | value = 0; | |
4173 | } | |
4174 | ||
4175 | value = set_got_entry (output_bfd, info, dyn_i, dynindx, | |
4176 | rel->r_addend, value, R_IA64_FPTRNNLSB); | |
4177 | value -= gp_val; | |
4178 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4179 | } | |
4180 | break; | |
4181 | ||
4182 | case R_IA64_PCREL32MSB: | |
4183 | case R_IA64_PCREL32LSB: | |
4184 | case R_IA64_PCREL64MSB: | |
4185 | case R_IA64_PCREL64LSB: | |
4186 | /* Install a dynamic relocation for this reloc. */ | |
4187 | if (dynamic_symbol_p && r_symndx != STN_UNDEF) | |
4188 | { | |
4189 | BFD_ASSERT (srel != NULL); | |
4190 | ||
4191 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4192 | srel, rel->r_offset, r_type, | |
4193 | h->dynindx, rel->r_addend); | |
4194 | } | |
4195 | goto finish_pcrel; | |
4196 | ||
4197 | case R_IA64_PCREL21B: | |
4198 | case R_IA64_PCREL60B: | |
4199 | /* We should have created a PLT entry for any dynamic symbol. */ | |
4200 | dyn_i = NULL; | |
4201 | if (h) | |
4202 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); | |
4203 | ||
4204 | if (dyn_i && dyn_i->want_plt2) | |
4205 | { | |
4206 | /* Should have caught this earlier. */ | |
4207 | BFD_ASSERT (rel->r_addend == 0); | |
4208 | ||
4209 | value = (ia64_info->root.splt->output_section->vma | |
4210 | + ia64_info->root.splt->output_offset | |
4211 | + dyn_i->plt2_offset); | |
4212 | } | |
4213 | else | |
4214 | { | |
4215 | /* Since there's no PLT entry, Validate that this is | |
4216 | locally defined. */ | |
4217 | BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL); | |
4218 | ||
4219 | /* If the symbol is undef_weak, we shouldn't be trying | |
4220 | to call it. There's every chance that we'd wind up | |
4221 | with an out-of-range fixup here. Don't bother setting | |
4222 | any value at all. */ | |
4223 | if (undef_weak_ref) | |
4224 | continue; | |
4225 | } | |
4226 | goto finish_pcrel; | |
4227 | ||
4228 | case R_IA64_PCREL21BI: | |
4229 | case R_IA64_PCREL21F: | |
4230 | case R_IA64_PCREL21M: | |
4231 | case R_IA64_PCREL22: | |
4232 | case R_IA64_PCREL64I: | |
4233 | /* The PCREL21BI reloc is specifically not intended for use with | |
4234 | dynamic relocs. PCREL21F and PCREL21M are used for speculation | |
4235 | fixup code, and thus probably ought not be dynamic. The | |
4236 | PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */ | |
4237 | if (dynamic_symbol_p) | |
4238 | { | |
4239 | const char *msg; | |
4240 | ||
4241 | if (r_type == R_IA64_PCREL21BI) | |
695344c0 | 4242 | /* xgettext:c-format */ |
cbe79dfe TG |
4243 | msg = _("%B: @internal branch to dynamic symbol %s"); |
4244 | else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M) | |
695344c0 | 4245 | /* xgettext:c-format */ |
cbe79dfe TG |
4246 | msg = _("%B: speculation fixup to dynamic symbol %s"); |
4247 | else | |
695344c0 | 4248 | /* xgettext:c-format */ |
cbe79dfe | 4249 | msg = _("%B: @pcrel relocation against dynamic symbol %s"); |
4eca0228 AM |
4250 | _bfd_error_handler (msg, input_bfd, |
4251 | h ? h->root.root.string | |
4252 | : bfd_elf_sym_name (input_bfd, | |
4253 | symtab_hdr, | |
4254 | sym, | |
4255 | sym_sec)); | |
cbe79dfe TG |
4256 | ret_val = FALSE; |
4257 | continue; | |
4258 | } | |
4259 | goto finish_pcrel; | |
4260 | ||
4261 | finish_pcrel: | |
4262 | /* Make pc-relative. */ | |
4263 | value -= (input_section->output_section->vma | |
4264 | + input_section->output_offset | |
4265 | + rel->r_offset) & ~ (bfd_vma) 0x3; | |
4266 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4267 | break; | |
4268 | ||
4269 | case R_IA64_SEGREL32MSB: | |
4270 | case R_IA64_SEGREL32LSB: | |
4271 | case R_IA64_SEGREL64MSB: | |
4272 | case R_IA64_SEGREL64LSB: | |
4273 | { | |
4274 | /* Find the segment that contains the output_section. */ | |
4275 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section | |
4276 | (output_bfd, input_section->output_section); | |
4277 | ||
4278 | if (p == NULL) | |
4279 | { | |
4280 | r = bfd_reloc_notsupported; | |
4281 | } | |
4282 | else | |
4283 | { | |
4284 | /* The VMA of the segment is the vaddr of the associated | |
4285 | program header. */ | |
4286 | if (value > p->p_vaddr) | |
4287 | value -= p->p_vaddr; | |
4288 | else | |
4289 | value = 0; | |
4290 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4291 | } | |
4292 | break; | |
4293 | } | |
4294 | ||
4295 | case R_IA64_SECREL32MSB: | |
4296 | case R_IA64_SECREL32LSB: | |
4297 | case R_IA64_SECREL64MSB: | |
4298 | case R_IA64_SECREL64LSB: | |
4299 | /* Make output-section relative to section where the symbol | |
4300 | is defined. PR 475 */ | |
4301 | if (sym_sec) | |
4302 | value -= sym_sec->output_section->vma; | |
4303 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4304 | break; | |
4305 | ||
4306 | case R_IA64_IPLTMSB: | |
4307 | case R_IA64_IPLTLSB: | |
4308 | /* Install a dynamic relocation for this reloc. */ | |
0e1862bb | 4309 | if ((dynamic_symbol_p || bfd_link_pic (info)) |
cbe79dfe TG |
4310 | && (input_section->flags & SEC_ALLOC) != 0) |
4311 | { | |
4312 | BFD_ASSERT (srel != NULL); | |
4313 | ||
4314 | /* If we don't need dynamic symbol lookup, install two | |
4315 | RELATIVE relocations. */ | |
4316 | if (!dynamic_symbol_p) | |
4317 | { | |
4318 | unsigned int dyn_r_type; | |
4319 | ||
4320 | if (r_type == R_IA64_IPLTMSB) | |
4321 | dyn_r_type = R_IA64_REL64MSB; | |
4322 | else | |
4323 | dyn_r_type = R_IA64_REL64LSB; | |
4324 | ||
4325 | elfNN_ia64_install_dyn_reloc (output_bfd, info, | |
4326 | input_section, | |
4327 | srel, rel->r_offset, | |
4328 | dyn_r_type, 0, value); | |
4329 | elfNN_ia64_install_dyn_reloc (output_bfd, info, | |
4330 | input_section, | |
4331 | srel, rel->r_offset + 8, | |
4332 | dyn_r_type, 0, gp_val); | |
4333 | } | |
4334 | else | |
4335 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4336 | srel, rel->r_offset, r_type, | |
4337 | h->dynindx, rel->r_addend); | |
4338 | } | |
4339 | ||
4340 | if (r_type == R_IA64_IPLTMSB) | |
4341 | r_type = R_IA64_DIR64MSB; | |
4342 | else | |
4343 | r_type = R_IA64_DIR64LSB; | |
4344 | ia64_elf_install_value (hit_addr, value, r_type); | |
4345 | r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type); | |
4346 | break; | |
4347 | ||
4348 | case R_IA64_TPREL14: | |
4349 | case R_IA64_TPREL22: | |
4350 | case R_IA64_TPREL64I: | |
4351 | if (elf_hash_table (info)->tls_sec == NULL) | |
4352 | goto missing_tls_sec; | |
4353 | value -= elfNN_ia64_tprel_base (info); | |
4354 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4355 | break; | |
4356 | ||
4357 | case R_IA64_DTPREL14: | |
4358 | case R_IA64_DTPREL22: | |
4359 | case R_IA64_DTPREL64I: | |
4360 | case R_IA64_DTPREL32LSB: | |
4361 | case R_IA64_DTPREL32MSB: | |
4362 | case R_IA64_DTPREL64LSB: | |
4363 | case R_IA64_DTPREL64MSB: | |
4364 | if (elf_hash_table (info)->tls_sec == NULL) | |
4365 | goto missing_tls_sec; | |
4366 | value -= elfNN_ia64_dtprel_base (info); | |
4367 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4368 | break; | |
4369 | ||
4370 | case R_IA64_LTOFF_TPREL22: | |
4371 | case R_IA64_LTOFF_DTPMOD22: | |
4372 | case R_IA64_LTOFF_DTPREL22: | |
4373 | { | |
4374 | int got_r_type; | |
4375 | long dynindx = h ? h->dynindx : -1; | |
4376 | bfd_vma r_addend = rel->r_addend; | |
4377 | ||
4378 | switch (r_type) | |
4379 | { | |
4380 | default: | |
4381 | case R_IA64_LTOFF_TPREL22: | |
4382 | if (!dynamic_symbol_p) | |
4383 | { | |
4384 | if (elf_hash_table (info)->tls_sec == NULL) | |
4385 | goto missing_tls_sec; | |
0e1862bb | 4386 | if (!bfd_link_pic (info)) |
cbe79dfe TG |
4387 | value -= elfNN_ia64_tprel_base (info); |
4388 | else | |
4389 | { | |
4390 | r_addend += value - elfNN_ia64_dtprel_base (info); | |
4391 | dynindx = 0; | |
4392 | } | |
4393 | } | |
4394 | got_r_type = R_IA64_TPREL64LSB; | |
4395 | break; | |
4396 | case R_IA64_LTOFF_DTPMOD22: | |
0e1862bb | 4397 | if (!dynamic_symbol_p && !bfd_link_pic (info)) |
cbe79dfe TG |
4398 | value = 1; |
4399 | got_r_type = R_IA64_DTPMOD64LSB; | |
4400 | break; | |
4401 | case R_IA64_LTOFF_DTPREL22: | |
4402 | if (!dynamic_symbol_p) | |
4403 | { | |
4404 | if (elf_hash_table (info)->tls_sec == NULL) | |
4405 | goto missing_tls_sec; | |
4406 | value -= elfNN_ia64_dtprel_base (info); | |
4407 | } | |
4408 | got_r_type = R_IA64_DTPRELNNLSB; | |
4409 | break; | |
4410 | } | |
4411 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4412 | value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend, | |
4413 | value, got_r_type); | |
4414 | value -= gp_val; | |
4415 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4416 | } | |
4417 | break; | |
4418 | ||
4419 | default: | |
4420 | r = bfd_reloc_notsupported; | |
4421 | break; | |
4422 | } | |
4423 | ||
4424 | switch (r) | |
4425 | { | |
4426 | case bfd_reloc_ok: | |
4427 | break; | |
4428 | ||
4429 | case bfd_reloc_undefined: | |
4430 | /* This can happen for global table relative relocs if | |
4431 | __gp is undefined. This is a panic situation so we | |
4432 | don't try to continue. */ | |
4433 | (*info->callbacks->undefined_symbol) | |
4434 | (info, "__gp", input_bfd, input_section, rel->r_offset, 1); | |
4435 | return FALSE; | |
4436 | ||
4437 | case bfd_reloc_notsupported: | |
4438 | { | |
4439 | const char *name; | |
4440 | ||
4441 | if (h) | |
4442 | name = h->root.root.string; | |
4443 | else | |
4444 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4445 | sym_sec); | |
1a72702b AM |
4446 | (*info->callbacks->warning) (info, _("unsupported reloc"), |
4447 | name, input_bfd, | |
4448 | input_section, rel->r_offset); | |
cbe79dfe TG |
4449 | ret_val = FALSE; |
4450 | } | |
4451 | break; | |
4452 | ||
4453 | case bfd_reloc_dangerous: | |
4454 | case bfd_reloc_outofrange: | |
4455 | case bfd_reloc_overflow: | |
4456 | default: | |
4457 | missing_tls_sec: | |
4458 | { | |
4459 | const char *name; | |
4460 | ||
4461 | if (h) | |
4462 | name = h->root.root.string; | |
4463 | else | |
4464 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4465 | sym_sec); | |
4466 | ||
4467 | switch (r_type) | |
4468 | { | |
4469 | case R_IA64_TPREL14: | |
4470 | case R_IA64_TPREL22: | |
4471 | case R_IA64_TPREL64I: | |
4472 | case R_IA64_DTPREL14: | |
4473 | case R_IA64_DTPREL22: | |
4474 | case R_IA64_DTPREL64I: | |
4475 | case R_IA64_DTPREL32LSB: | |
4476 | case R_IA64_DTPREL32MSB: | |
4477 | case R_IA64_DTPREL64LSB: | |
4478 | case R_IA64_DTPREL64MSB: | |
4479 | case R_IA64_LTOFF_TPREL22: | |
4480 | case R_IA64_LTOFF_DTPMOD22: | |
4481 | case R_IA64_LTOFF_DTPREL22: | |
4eca0228 | 4482 | _bfd_error_handler |
695344c0 | 4483 | /* xgettext:c-format */ |
c08bb8dd | 4484 | (_("%B: missing TLS section for relocation %s against `%s'" |
d42c267e | 4485 | " at %#Lx in section `%A'."), |
c08bb8dd AM |
4486 | input_bfd, howto->name, name, |
4487 | rel->r_offset, input_section); | |
cbe79dfe TG |
4488 | break; |
4489 | ||
4490 | case R_IA64_PCREL21B: | |
4491 | case R_IA64_PCREL21BI: | |
4492 | case R_IA64_PCREL21M: | |
4493 | case R_IA64_PCREL21F: | |
4494 | if (is_elf_hash_table (info->hash)) | |
4495 | { | |
4496 | /* Relaxtion is always performed for ELF output. | |
4497 | Overflow failures for those relocations mean | |
4498 | that the section is too big to relax. */ | |
4eca0228 | 4499 | _bfd_error_handler |
695344c0 | 4500 | /* xgettext:c-format */ |
d42c267e AM |
4501 | (_("%B: Can't relax br (%s) to `%s' at %#Lx" |
4502 | " in section `%A' with size %#Lx (> 0x1000000)."), | |
c08bb8dd AM |
4503 | input_bfd, howto->name, name, rel->r_offset, |
4504 | input_section, input_section->size); | |
cbe79dfe TG |
4505 | break; |
4506 | } | |
1a0670f3 | 4507 | /* Fall through. */ |
cbe79dfe | 4508 | default: |
1a72702b AM |
4509 | (*info->callbacks->reloc_overflow) (info, |
4510 | &h->root, | |
4511 | name, | |
4512 | howto->name, | |
4513 | (bfd_vma) 0, | |
4514 | input_bfd, | |
4515 | input_section, | |
4516 | rel->r_offset); | |
cbe79dfe TG |
4517 | break; |
4518 | } | |
4519 | ||
4520 | ret_val = FALSE; | |
4521 | } | |
4522 | break; | |
4523 | } | |
4524 | } | |
4525 | ||
4526 | return ret_val; | |
4527 | } | |
4528 | ||
4529 | static bfd_boolean | |
4530 | elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd, | |
4531 | struct bfd_link_info *info, | |
4532 | struct elf_link_hash_entry *h, | |
4533 | Elf_Internal_Sym *sym) | |
4534 | { | |
4535 | struct elfNN_ia64_link_hash_table *ia64_info; | |
4536 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
4537 | ||
4538 | ia64_info = elfNN_ia64_hash_table (info); | |
4539 | if (ia64_info == NULL) | |
4540 | return FALSE; | |
4541 | ||
4542 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); | |
4543 | ||
4544 | /* Fill in the PLT data, if required. */ | |
4545 | if (dyn_i && dyn_i->want_plt) | |
4546 | { | |
4547 | Elf_Internal_Rela outrel; | |
4548 | bfd_byte *loc; | |
4549 | asection *plt_sec; | |
4550 | bfd_vma plt_addr, pltoff_addr, gp_val, plt_index; | |
4551 | ||
4552 | gp_val = _bfd_get_gp_value (output_bfd); | |
4553 | ||
4554 | /* Initialize the minimal PLT entry. */ | |
4555 | ||
4556 | plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; | |
4557 | plt_sec = ia64_info->root.splt; | |
4558 | loc = plt_sec->contents + dyn_i->plt_offset; | |
4559 | ||
4560 | memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE); | |
4561 | ia64_elf_install_value (loc, plt_index, R_IA64_IMM22); | |
4562 | ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B); | |
4563 | ||
4564 | plt_addr = (plt_sec->output_section->vma | |
4565 | + plt_sec->output_offset | |
4566 | + dyn_i->plt_offset); | |
4567 | pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE); | |
4568 | ||
4569 | /* Initialize the FULL PLT entry, if needed. */ | |
4570 | if (dyn_i->want_plt2) | |
4571 | { | |
4572 | loc = plt_sec->contents + dyn_i->plt2_offset; | |
4573 | ||
4574 | memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); | |
4575 | ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22); | |
4576 | ||
4577 | /* Mark the symbol as undefined, rather than as defined in the | |
4578 | plt section. Leave the value alone. */ | |
4579 | /* ??? We didn't redefine it in adjust_dynamic_symbol in the | |
4580 | first place. But perhaps elflink.c did some for us. */ | |
4581 | if (!h->def_regular) | |
4582 | sym->st_shndx = SHN_UNDEF; | |
4583 | } | |
4584 | ||
4585 | /* Create the dynamic relocation. */ | |
4586 | outrel.r_offset = pltoff_addr; | |
4587 | if (bfd_little_endian (output_bfd)) | |
4588 | outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB); | |
4589 | else | |
4590 | outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB); | |
4591 | outrel.r_addend = 0; | |
4592 | ||
4593 | /* This is fun. In the .IA_64.pltoff section, we've got entries | |
4594 | that correspond both to real PLT entries, and those that | |
4595 | happened to resolve to local symbols but need to be created | |
4596 | to satisfy @pltoff relocations. The .rela.IA_64.pltoff | |
4597 | relocations for the real PLT should come at the end of the | |
4598 | section, so that they can be indexed by plt entry at runtime. | |
4599 | ||
4600 | We emitted all of the relocations for the non-PLT @pltoff | |
4601 | entries during relocate_section. So we can consider the | |
4602 | existing sec->reloc_count to be the base of the array of | |
4603 | PLT relocations. */ | |
4604 | ||
4605 | loc = ia64_info->rel_pltoff_sec->contents; | |
4606 | loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index) | |
4607 | * sizeof (ElfNN_External_Rela)); | |
4608 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); | |
4609 | } | |
4610 | ||
4611 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 4612 | if (h == ia64_info->root.hdynamic |
cbe79dfe TG |
4613 | || h == ia64_info->root.hgot |
4614 | || h == ia64_info->root.hplt) | |
4615 | sym->st_shndx = SHN_ABS; | |
4616 | ||
4617 | return TRUE; | |
4618 | } | |
4619 | ||
4620 | static bfd_boolean | |
4621 | elfNN_ia64_finish_dynamic_sections (bfd *abfd, | |
4622 | struct bfd_link_info *info) | |
4623 | { | |
4624 | struct elfNN_ia64_link_hash_table *ia64_info; | |
4625 | bfd *dynobj; | |
4626 | ||
4627 | ia64_info = elfNN_ia64_hash_table (info); | |
4628 | if (ia64_info == NULL) | |
4629 | return FALSE; | |
4630 | ||
4631 | dynobj = ia64_info->root.dynobj; | |
4632 | ||
ce558b89 | 4633 | if (ia64_info->root.dynamic_sections_created) |
cbe79dfe TG |
4634 | { |
4635 | ElfNN_External_Dyn *dyncon, *dynconend; | |
4636 | asection *sdyn, *sgotplt; | |
4637 | bfd_vma gp_val; | |
4638 | ||
3d4d4302 | 4639 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
ce558b89 | 4640 | sgotplt = ia64_info->root.sgotplt; |
cbe79dfe TG |
4641 | BFD_ASSERT (sdyn != NULL); |
4642 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; | |
4643 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
4644 | ||
4645 | gp_val = _bfd_get_gp_value (abfd); | |
4646 | ||
4647 | for (; dyncon < dynconend; dyncon++) | |
4648 | { | |
4649 | Elf_Internal_Dyn dyn; | |
4650 | ||
4651 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); | |
4652 | ||
4653 | switch (dyn.d_tag) | |
4654 | { | |
4655 | case DT_PLTGOT: | |
4656 | dyn.d_un.d_ptr = gp_val; | |
4657 | break; | |
4658 | ||
4659 | case DT_PLTRELSZ: | |
4660 | dyn.d_un.d_val = (ia64_info->minplt_entries | |
4661 | * sizeof (ElfNN_External_Rela)); | |
4662 | break; | |
4663 | ||
4664 | case DT_JMPREL: | |
4665 | /* See the comment above in finish_dynamic_symbol. */ | |
4666 | dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma | |
4667 | + ia64_info->rel_pltoff_sec->output_offset | |
4668 | + (ia64_info->rel_pltoff_sec->reloc_count | |
4669 | * sizeof (ElfNN_External_Rela))); | |
4670 | break; | |
4671 | ||
4672 | case DT_IA_64_PLT_RESERVE: | |
4673 | dyn.d_un.d_ptr = (sgotplt->output_section->vma | |
4674 | + sgotplt->output_offset); | |
4675 | break; | |
cbe79dfe TG |
4676 | } |
4677 | ||
4678 | bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon); | |
4679 | } | |
4680 | ||
4681 | /* Initialize the PLT0 entry. */ | |
4682 | if (ia64_info->root.splt) | |
4683 | { | |
4684 | bfd_byte *loc = ia64_info->root.splt->contents; | |
4685 | bfd_vma pltres; | |
4686 | ||
4687 | memcpy (loc, plt_header, PLT_HEADER_SIZE); | |
4688 | ||
4689 | pltres = (sgotplt->output_section->vma | |
4690 | + sgotplt->output_offset | |
4691 | - gp_val); | |
4692 | ||
4693 | ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22); | |
4694 | } | |
4695 | } | |
4696 | ||
4697 | return TRUE; | |
4698 | } | |
4699 | \f | |
4700 | /* ELF file flag handling: */ | |
4701 | ||
4702 | /* Function to keep IA-64 specific file flags. */ | |
4703 | static bfd_boolean | |
4704 | elfNN_ia64_set_private_flags (bfd *abfd, flagword flags) | |
4705 | { | |
4706 | BFD_ASSERT (!elf_flags_init (abfd) | |
4707 | || elf_elfheader (abfd)->e_flags == flags); | |
4708 | ||
4709 | elf_elfheader (abfd)->e_flags = flags; | |
4710 | elf_flags_init (abfd) = TRUE; | |
4711 | return TRUE; | |
4712 | } | |
4713 | ||
4714 | /* Merge backend specific data from an object file to the output | |
4715 | object file when linking. */ | |
4716 | static bfd_boolean | |
50e03d47 | 4717 | elfNN_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
cbe79dfe | 4718 | { |
50e03d47 | 4719 | bfd *obfd = info->output_bfd; |
cbe79dfe TG |
4720 | flagword out_flags; |
4721 | flagword in_flags; | |
4722 | bfd_boolean ok = TRUE; | |
4723 | ||
4724 | /* Don't even pretend to support mixed-format linking. */ | |
4725 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4726 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
4727 | return FALSE; | |
4728 | ||
4729 | in_flags = elf_elfheader (ibfd)->e_flags; | |
4730 | out_flags = elf_elfheader (obfd)->e_flags; | |
4731 | ||
4732 | if (! elf_flags_init (obfd)) | |
4733 | { | |
4734 | elf_flags_init (obfd) = TRUE; | |
4735 | elf_elfheader (obfd)->e_flags = in_flags; | |
4736 | ||
4737 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
4738 | && bfd_get_arch_info (obfd)->the_default) | |
4739 | { | |
4740 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
4741 | bfd_get_mach (ibfd)); | |
4742 | } | |
4743 | ||
4744 | return TRUE; | |
4745 | } | |
4746 | ||
4747 | /* Check flag compatibility. */ | |
4748 | if (in_flags == out_flags) | |
4749 | return TRUE; | |
4750 | ||
4751 | /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ | |
4752 | if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) | |
4753 | elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; | |
4754 | ||
4755 | if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) | |
4756 | { | |
4eca0228 | 4757 | _bfd_error_handler |
cbe79dfe TG |
4758 | (_("%B: linking trap-on-NULL-dereference with non-trapping files"), |
4759 | ibfd); | |
4760 | ||
4761 | bfd_set_error (bfd_error_bad_value); | |
4762 | ok = FALSE; | |
4763 | } | |
4764 | if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) | |
4765 | { | |
4eca0228 | 4766 | _bfd_error_handler |
cbe79dfe TG |
4767 | (_("%B: linking big-endian files with little-endian files"), |
4768 | ibfd); | |
4769 | ||
4770 | bfd_set_error (bfd_error_bad_value); | |
4771 | ok = FALSE; | |
4772 | } | |
4773 | if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) | |
4774 | { | |
4eca0228 | 4775 | _bfd_error_handler |
cbe79dfe TG |
4776 | (_("%B: linking 64-bit files with 32-bit files"), |
4777 | ibfd); | |
4778 | ||
4779 | bfd_set_error (bfd_error_bad_value); | |
4780 | ok = FALSE; | |
4781 | } | |
4782 | if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) | |
4783 | { | |
4eca0228 | 4784 | _bfd_error_handler |
cbe79dfe TG |
4785 | (_("%B: linking constant-gp files with non-constant-gp files"), |
4786 | ibfd); | |
4787 | ||
4788 | bfd_set_error (bfd_error_bad_value); | |
4789 | ok = FALSE; | |
4790 | } | |
4791 | if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) | |
4792 | != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) | |
4793 | { | |
4eca0228 | 4794 | _bfd_error_handler |
cbe79dfe TG |
4795 | (_("%B: linking auto-pic files with non-auto-pic files"), |
4796 | ibfd); | |
4797 | ||
4798 | bfd_set_error (bfd_error_bad_value); | |
4799 | ok = FALSE; | |
4800 | } | |
4801 | ||
4802 | return ok; | |
4803 | } | |
4804 | ||
4805 | static bfd_boolean | |
2c3fc389 | 4806 | elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr) |
cbe79dfe TG |
4807 | { |
4808 | FILE *file = (FILE *) ptr; | |
4809 | flagword flags = elf_elfheader (abfd)->e_flags; | |
4810 | ||
4811 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
4812 | ||
4813 | fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", | |
4814 | (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", | |
4815 | (flags & EF_IA_64_EXT) ? "EXT, " : "", | |
4816 | (flags & EF_IA_64_BE) ? "BE, " : "LE, ", | |
4817 | (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", | |
4818 | (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", | |
4819 | (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", | |
4820 | (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", | |
4821 | (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); | |
4822 | ||
4823 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4824 | return TRUE; | |
4825 | } | |
4826 | ||
4827 | static enum elf_reloc_type_class | |
7e612e98 AM |
4828 | elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4829 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
4830 | const Elf_Internal_Rela *rela) | |
cbe79dfe TG |
4831 | { |
4832 | switch ((int) ELFNN_R_TYPE (rela->r_info)) | |
4833 | { | |
4834 | case R_IA64_REL32MSB: | |
4835 | case R_IA64_REL32LSB: | |
4836 | case R_IA64_REL64MSB: | |
4837 | case R_IA64_REL64LSB: | |
4838 | return reloc_class_relative; | |
4839 | case R_IA64_IPLTMSB: | |
4840 | case R_IA64_IPLTLSB: | |
4841 | return reloc_class_plt; | |
4842 | case R_IA64_COPY: | |
4843 | return reloc_class_copy; | |
4844 | default: | |
4845 | return reloc_class_normal; | |
4846 | } | |
4847 | } | |
4848 | ||
4849 | static const struct bfd_elf_special_section elfNN_ia64_special_sections[] = | |
4850 | { | |
4851 | { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, | |
4852 | { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, | |
4853 | { NULL, 0, 0, 0, 0 } | |
4854 | }; | |
4855 | ||
4856 | static bfd_boolean | |
4857 | elfNN_ia64_object_p (bfd *abfd) | |
4858 | { | |
4859 | asection *sec; | |
4860 | asection *group, *unwi, *unw; | |
4861 | flagword flags; | |
4862 | const char *name; | |
4863 | char *unwi_name, *unw_name; | |
4864 | bfd_size_type amt; | |
4865 | ||
4866 | if (abfd->flags & DYNAMIC) | |
4867 | return TRUE; | |
4868 | ||
4869 | /* Flags for fake group section. */ | |
4870 | flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE | |
4871 | | SEC_EXCLUDE); | |
4872 | ||
4873 | /* We add a fake section group for each .gnu.linkonce.t.* section, | |
4874 | which isn't in a section group, and its unwind sections. */ | |
4875 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
4876 | { | |
4877 | if (elf_sec_group (sec) == NULL | |
4878 | && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP)) | |
4879 | == (SEC_LINK_ONCE | SEC_CODE)) | |
4880 | && CONST_STRNEQ (sec->name, ".gnu.linkonce.t.")) | |
4881 | { | |
4882 | name = sec->name + 16; | |
4883 | ||
4884 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi."); | |
4885 | unwi_name = bfd_alloc (abfd, amt); | |
4886 | if (!unwi_name) | |
4887 | return FALSE; | |
4888 | ||
4889 | strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name); | |
4890 | unwi = bfd_get_section_by_name (abfd, unwi_name); | |
4891 | ||
4892 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw."); | |
4893 | unw_name = bfd_alloc (abfd, amt); | |
4894 | if (!unw_name) | |
4895 | return FALSE; | |
4896 | ||
4897 | strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name); | |
4898 | unw = bfd_get_section_by_name (abfd, unw_name); | |
4899 | ||
4900 | /* We need to create a fake group section for it and its | |
4901 | unwind sections. */ | |
4902 | group = bfd_make_section_anyway_with_flags (abfd, name, | |
4903 | flags); | |
4904 | if (group == NULL) | |
4905 | return FALSE; | |
4906 | ||
4907 | /* Move the fake group section to the beginning. */ | |
4908 | bfd_section_list_remove (abfd, group); | |
4909 | bfd_section_list_prepend (abfd, group); | |
4910 | ||
4911 | elf_next_in_group (group) = sec; | |
4912 | ||
4913 | elf_group_name (sec) = name; | |
4914 | elf_next_in_group (sec) = sec; | |
4915 | elf_sec_group (sec) = group; | |
4916 | ||
4917 | if (unwi) | |
4918 | { | |
4919 | elf_group_name (unwi) = name; | |
4920 | elf_next_in_group (unwi) = sec; | |
4921 | elf_next_in_group (sec) = unwi; | |
4922 | elf_sec_group (unwi) = group; | |
4923 | } | |
4924 | ||
4925 | if (unw) | |
4926 | { | |
4927 | elf_group_name (unw) = name; | |
4928 | if (unwi) | |
4929 | { | |
4930 | elf_next_in_group (unw) = elf_next_in_group (unwi); | |
4931 | elf_next_in_group (unwi) = unw; | |
4932 | } | |
4933 | else | |
4934 | { | |
4935 | elf_next_in_group (unw) = sec; | |
4936 | elf_next_in_group (sec) = unw; | |
4937 | } | |
4938 | elf_sec_group (unw) = group; | |
4939 | } | |
4940 | ||
4941 | /* Fake SHT_GROUP section header. */ | |
4942 | elf_section_data (group)->this_hdr.bfd_section = group; | |
4943 | elf_section_data (group)->this_hdr.sh_type = SHT_GROUP; | |
4944 | } | |
4945 | } | |
4946 | return TRUE; | |
4947 | } | |
4948 | ||
4949 | static bfd_boolean | |
4950 | elfNN_ia64_hpux_vec (const bfd_target *vec) | |
4951 | { | |
6d00b590 AM |
4952 | extern const bfd_target ia64_elfNN_hpux_be_vec; |
4953 | return (vec == &ia64_elfNN_hpux_be_vec); | |
cbe79dfe TG |
4954 | } |
4955 | ||
4956 | static void | |
4957 | elfNN_hpux_post_process_headers (bfd *abfd, | |
4958 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
4959 | { | |
4960 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
4961 | ||
4962 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
4963 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
4964 | } | |
4965 | ||
4966 | static bfd_boolean | |
4967 | elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, | |
4968 | asection *sec, int *retval) | |
4969 | { | |
4970 | if (bfd_is_com_section (sec)) | |
4971 | { | |
4972 | *retval = SHN_IA_64_ANSI_COMMON; | |
4973 | return TRUE; | |
4974 | } | |
4975 | return FALSE; | |
4976 | } | |
4977 | ||
4978 | static void | |
4979 | elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
4980 | asymbol *asym) | |
4981 | { | |
4982 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
4983 | ||
4984 | switch (elfsym->internal_elf_sym.st_shndx) | |
4985 | { | |
4986 | case SHN_IA_64_ANSI_COMMON: | |
4987 | asym->section = bfd_com_section_ptr; | |
4988 | asym->value = elfsym->internal_elf_sym.st_size; | |
4989 | asym->flags &= ~BSF_GLOBAL; | |
4990 | break; | |
4991 | } | |
4992 | } | |
cbe79dfe | 4993 | \f |
6d00b590 | 4994 | #define TARGET_LITTLE_SYM ia64_elfNN_le_vec |
cbe79dfe | 4995 | #define TARGET_LITTLE_NAME "elfNN-ia64-little" |
6d00b590 | 4996 | #define TARGET_BIG_SYM ia64_elfNN_be_vec |
cbe79dfe TG |
4997 | #define TARGET_BIG_NAME "elfNN-ia64-big" |
4998 | #define ELF_ARCH bfd_arch_ia64 | |
4999 | #define ELF_TARGET_ID IA64_ELF_DATA | |
5000 | #define ELF_MACHINE_CODE EM_IA_64 | |
5001 | #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */ | |
5002 | #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */ | |
5003 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ | |
5004 | #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */ | |
5005 | ||
5006 | #define elf_backend_section_from_shdr \ | |
5007 | elfNN_ia64_section_from_shdr | |
5008 | #define elf_backend_section_flags \ | |
5009 | elfNN_ia64_section_flags | |
5010 | #define elf_backend_fake_sections \ | |
5011 | elfNN_ia64_fake_sections | |
5012 | #define elf_backend_final_write_processing \ | |
5013 | elfNN_ia64_final_write_processing | |
5014 | #define elf_backend_add_symbol_hook \ | |
5015 | elfNN_ia64_add_symbol_hook | |
5016 | #define elf_backend_additional_program_headers \ | |
5017 | elfNN_ia64_additional_program_headers | |
5018 | #define elf_backend_modify_segment_map \ | |
5019 | elfNN_ia64_modify_segment_map | |
5020 | #define elf_backend_modify_program_headers \ | |
5021 | elfNN_ia64_modify_program_headers | |
5022 | #define elf_info_to_howto \ | |
5023 | elfNN_ia64_info_to_howto | |
5024 | ||
5025 | #define bfd_elfNN_bfd_reloc_type_lookup \ | |
5026 | ia64_elf_reloc_type_lookup | |
5027 | #define bfd_elfNN_bfd_reloc_name_lookup \ | |
5028 | ia64_elf_reloc_name_lookup | |
5029 | #define bfd_elfNN_bfd_is_local_label_name \ | |
5030 | elfNN_ia64_is_local_label_name | |
5031 | #define bfd_elfNN_bfd_relax_section \ | |
5032 | elfNN_ia64_relax_section | |
5033 | ||
5034 | #define elf_backend_object_p \ | |
5035 | elfNN_ia64_object_p | |
5036 | ||
5037 | /* Stuff for the BFD linker: */ | |
5038 | #define bfd_elfNN_bfd_link_hash_table_create \ | |
5039 | elfNN_ia64_hash_table_create | |
cbe79dfe TG |
5040 | #define elf_backend_create_dynamic_sections \ |
5041 | elfNN_ia64_create_dynamic_sections | |
5042 | #define elf_backend_check_relocs \ | |
5043 | elfNN_ia64_check_relocs | |
5044 | #define elf_backend_adjust_dynamic_symbol \ | |
5045 | elfNN_ia64_adjust_dynamic_symbol | |
5046 | #define elf_backend_size_dynamic_sections \ | |
5047 | elfNN_ia64_size_dynamic_sections | |
5048 | #define elf_backend_omit_section_dynsym \ | |
5049 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
5050 | #define elf_backend_relocate_section \ | |
5051 | elfNN_ia64_relocate_section | |
5052 | #define elf_backend_finish_dynamic_symbol \ | |
5053 | elfNN_ia64_finish_dynamic_symbol | |
5054 | #define elf_backend_finish_dynamic_sections \ | |
5055 | elfNN_ia64_finish_dynamic_sections | |
5056 | #define bfd_elfNN_bfd_final_link \ | |
5057 | elfNN_ia64_final_link | |
5058 | ||
5059 | #define bfd_elfNN_bfd_merge_private_bfd_data \ | |
5060 | elfNN_ia64_merge_private_bfd_data | |
5061 | #define bfd_elfNN_bfd_set_private_flags \ | |
5062 | elfNN_ia64_set_private_flags | |
5063 | #define bfd_elfNN_bfd_print_private_bfd_data \ | |
5064 | elfNN_ia64_print_private_bfd_data | |
5065 | ||
5066 | #define elf_backend_plt_readonly 1 | |
5067 | #define elf_backend_want_plt_sym 0 | |
5068 | #define elf_backend_plt_alignment 5 | |
5069 | #define elf_backend_got_header_size 0 | |
5070 | #define elf_backend_want_got_plt 1 | |
5071 | #define elf_backend_may_use_rel_p 1 | |
5072 | #define elf_backend_may_use_rela_p 1 | |
5073 | #define elf_backend_default_use_rela_p 1 | |
5074 | #define elf_backend_want_dynbss 0 | |
5075 | #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect | |
5076 | #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol | |
5077 | #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol | |
5078 | #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class | |
5079 | #define elf_backend_rela_normal 1 | |
64f52338 | 5080 | #define elf_backend_dtrel_excludes_plt 1 |
cbe79dfe TG |
5081 | #define elf_backend_special_sections elfNN_ia64_special_sections |
5082 | #define elf_backend_default_execstack 0 | |
5083 | ||
5084 | /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with | |
5085 | SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields. | |
5086 | We don't want to flood users with so many error messages. We turn | |
5087 | off the warning for now. It will be turned on later when the Intel | |
5088 | compiler is fixed. */ | |
5089 | #define elf_backend_link_order_error_handler NULL | |
5090 | ||
5091 | #include "elfNN-target.h" | |
5092 | ||
5093 | /* HPUX-specific vectors. */ | |
5094 | ||
5095 | #undef TARGET_LITTLE_SYM | |
5096 | #undef TARGET_LITTLE_NAME | |
5097 | #undef TARGET_BIG_SYM | |
6d00b590 | 5098 | #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec |
cbe79dfe TG |
5099 | #undef TARGET_BIG_NAME |
5100 | #define TARGET_BIG_NAME "elfNN-ia64-hpux-big" | |
5101 | ||
5102 | /* These are HP-UX specific functions. */ | |
5103 | ||
5104 | #undef elf_backend_post_process_headers | |
5105 | #define elf_backend_post_process_headers elfNN_hpux_post_process_headers | |
5106 | ||
5107 | #undef elf_backend_section_from_bfd_section | |
5108 | #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section | |
5109 | ||
5110 | #undef elf_backend_symbol_processing | |
5111 | #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing | |
5112 | ||
5113 | #undef elf_backend_want_p_paddr_set_to_zero | |
5114 | #define elf_backend_want_p_paddr_set_to_zero 1 | |
5115 | ||
5116 | #undef ELF_COMMONPAGESIZE | |
5117 | #undef ELF_OSABI | |
5118 | #define ELF_OSABI ELFOSABI_HPUX | |
5119 | ||
5120 | #undef elfNN_bed | |
5121 | #define elfNN_bed elfNN_ia64_hpux_bed | |
5122 | ||
5123 | #include "elfNN-target.h" |