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cbe79dfe TG |
1 | /* IA-64 support for 64-bit ELF |
2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, | |
3 | 2008, 2009, 2010, 2011 Free Software Foundation, Inc. | |
4 | Contributed by David Mosberger-Tang <davidm@hpl.hp.com> | |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | MA 02110-1301, USA. */ | |
22 | ||
23 | #include "sysdep.h" | |
24 | #include "bfd.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "opcode/ia64.h" | |
28 | #include "elf/ia64.h" | |
29 | #include "objalloc.h" | |
30 | #include "hashtab.h" | |
31 | #include "bfd_stdint.h" | |
32 | #include "elfxx-ia64.h" | |
33 | ||
34 | #define ARCH_SIZE NN | |
35 | ||
36 | #if ARCH_SIZE == 64 | |
37 | #define LOG_SECTION_ALIGN 3 | |
38 | #endif | |
39 | ||
40 | #if ARCH_SIZE == 32 | |
41 | #define LOG_SECTION_ALIGN 2 | |
42 | #endif | |
43 | ||
44 | /* Only add code for vms when the vms target is enabled. This is required | |
45 | because it depends on vms-lib.c for its archive format and we don't want | |
46 | to compile that code if it is not used. */ | |
47 | #if ARCH_SIZE == 64 && \ | |
48 | (defined (HAVE_bfd_elf64_ia64_vms_vec) || defined (HAVE_all_vecs)) | |
49 | #define INCLUDE_IA64_VMS | |
50 | #endif | |
51 | ||
52 | typedef struct bfd_hash_entry *(*new_hash_entry_func) | |
53 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); | |
54 | ||
55 | /* In dynamically (linker-) created sections, we generally need to keep track | |
56 | of the place a symbol or expression got allocated to. This is done via hash | |
57 | tables that store entries of the following type. */ | |
58 | ||
59 | struct elfNN_ia64_dyn_sym_info | |
60 | { | |
61 | /* The addend for which this entry is relevant. */ | |
62 | bfd_vma addend; | |
63 | ||
64 | bfd_vma got_offset; | |
65 | bfd_vma fptr_offset; | |
66 | bfd_vma pltoff_offset; | |
67 | bfd_vma plt_offset; | |
68 | bfd_vma plt2_offset; | |
69 | bfd_vma tprel_offset; | |
70 | bfd_vma dtpmod_offset; | |
71 | bfd_vma dtprel_offset; | |
72 | ||
73 | /* The symbol table entry, if any, that this was derived from. */ | |
74 | struct elf_link_hash_entry *h; | |
75 | ||
76 | /* Used to count non-got, non-plt relocations for delayed sizing | |
77 | of relocation sections. */ | |
78 | struct elfNN_ia64_dyn_reloc_entry | |
79 | { | |
80 | struct elfNN_ia64_dyn_reloc_entry *next; | |
81 | asection *srel; | |
82 | int type; | |
83 | int count; | |
84 | ||
85 | /* Is this reloc against readonly section? */ | |
86 | bfd_boolean reltext; | |
87 | } *reloc_entries; | |
88 | ||
89 | /* TRUE when the section contents have been updated. */ | |
90 | unsigned got_done : 1; | |
91 | unsigned fptr_done : 1; | |
92 | unsigned pltoff_done : 1; | |
93 | unsigned tprel_done : 1; | |
94 | unsigned dtpmod_done : 1; | |
95 | unsigned dtprel_done : 1; | |
96 | ||
97 | /* TRUE for the different kinds of linker data we want created. */ | |
98 | unsigned want_got : 1; | |
99 | unsigned want_gotx : 1; | |
100 | unsigned want_fptr : 1; | |
101 | unsigned want_ltoff_fptr : 1; | |
102 | unsigned want_plt : 1; | |
103 | unsigned want_plt2 : 1; | |
104 | unsigned want_pltoff : 1; | |
105 | unsigned want_tprel : 1; | |
106 | unsigned want_dtpmod : 1; | |
107 | unsigned want_dtprel : 1; | |
108 | }; | |
109 | ||
110 | struct elfNN_ia64_local_hash_entry | |
111 | { | |
112 | int id; | |
113 | unsigned int r_sym; | |
114 | /* The number of elements in elfNN_ia64_dyn_sym_info array. */ | |
115 | unsigned int count; | |
116 | /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ | |
117 | unsigned int sorted_count; | |
118 | /* The size of elfNN_ia64_dyn_sym_info array. */ | |
119 | unsigned int size; | |
120 | /* The array of elfNN_ia64_dyn_sym_info. */ | |
121 | struct elfNN_ia64_dyn_sym_info *info; | |
122 | ||
123 | /* TRUE if this hash entry's addends was translated for | |
124 | SHF_MERGE optimization. */ | |
125 | unsigned sec_merge_done : 1; | |
126 | }; | |
127 | ||
128 | struct elfNN_ia64_link_hash_entry | |
129 | { | |
130 | struct elf_link_hash_entry root; | |
131 | /* The number of elements in elfNN_ia64_dyn_sym_info array. */ | |
132 | unsigned int count; | |
133 | /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ | |
134 | unsigned int sorted_count; | |
135 | /* The size of elfNN_ia64_dyn_sym_info array. */ | |
136 | unsigned int size; | |
137 | /* The array of elfNN_ia64_dyn_sym_info. */ | |
138 | struct elfNN_ia64_dyn_sym_info *info; | |
139 | }; | |
140 | ||
141 | struct elfNN_ia64_link_hash_table | |
142 | { | |
143 | /* The main hash table. */ | |
144 | struct elf_link_hash_table root; | |
145 | ||
146 | asection *fptr_sec; /* Function descriptor table (or NULL). */ | |
147 | asection *rel_fptr_sec; /* Dynamic relocation section for same. */ | |
148 | asection *pltoff_sec; /* Private descriptors for plt (or NULL). */ | |
149 | asection *rel_pltoff_sec; /* Dynamic relocation section for same. */ | |
150 | ||
151 | bfd_size_type minplt_entries; /* Number of minplt entries. */ | |
152 | unsigned reltext : 1; /* Are there relocs against readonly sections? */ | |
153 | unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */ | |
154 | bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */ | |
155 | /* There are maybe R_IA64_GPREL22 relocations, including those | |
156 | optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT | |
157 | sections. We need to record those sections so that we can choose | |
158 | a proper GP to cover all R_IA64_GPREL22 relocations. */ | |
159 | asection *max_short_sec; /* Maximum short output section. */ | |
160 | bfd_vma max_short_offset; /* Maximum short offset. */ | |
161 | asection *min_short_sec; /* Minimum short output section. */ | |
162 | bfd_vma min_short_offset; /* Minimum short offset. */ | |
163 | ||
164 | htab_t loc_hash_table; | |
165 | void *loc_hash_memory; | |
166 | }; | |
167 | ||
168 | struct elfNN_ia64_allocate_data | |
169 | { | |
170 | struct bfd_link_info *info; | |
171 | bfd_size_type ofs; | |
172 | bfd_boolean only_got; | |
173 | }; | |
174 | ||
175 | #define elfNN_ia64_hash_table(p) \ | |
176 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
177 | == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL) | |
178 | ||
179 | static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info | |
180 | (struct elfNN_ia64_link_hash_table *ia64_info, | |
181 | struct elf_link_hash_entry *h, | |
182 | bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create); | |
183 | static bfd_boolean elfNN_ia64_dynamic_symbol_p | |
184 | (struct elf_link_hash_entry *h, struct bfd_link_info *info, int); | |
185 | static bfd_boolean elfNN_ia64_choose_gp | |
186 | (bfd *abfd, struct bfd_link_info *info, bfd_boolean final); | |
187 | static void elfNN_ia64_dyn_sym_traverse | |
188 | (struct elfNN_ia64_link_hash_table *ia64_info, | |
189 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR), | |
190 | PTR info); | |
191 | static bfd_boolean allocate_global_data_got | |
192 | (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data); | |
193 | static bfd_boolean allocate_global_fptr_got | |
194 | (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data); | |
195 | static bfd_boolean allocate_local_got | |
196 | (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data); | |
197 | static bfd_boolean elfNN_ia64_hpux_vec | |
198 | (const bfd_target *vec); | |
199 | static bfd_boolean allocate_dynrel_entries | |
200 | (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data); | |
201 | static asection *get_pltoff | |
202 | (bfd *abfd, struct bfd_link_info *info, | |
203 | struct elfNN_ia64_link_hash_table *ia64_info); | |
204 | \f | |
205 | /* ia64-specific relocation. */ | |
206 | ||
207 | /* Given a ELF reloc, return the matching HOWTO structure. */ | |
208 | ||
209 | static void | |
210 | elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
211 | arelent *bfd_reloc, | |
212 | Elf_Internal_Rela *elf_reloc) | |
213 | { | |
214 | bfd_reloc->howto | |
215 | = ia64_elf_lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info)); | |
216 | } | |
217 | \f | |
218 | #define PLT_HEADER_SIZE (3 * 16) | |
219 | #define PLT_MIN_ENTRY_SIZE (1 * 16) | |
220 | #define PLT_FULL_ENTRY_SIZE (2 * 16) | |
221 | #define PLT_RESERVED_WORDS 3 | |
222 | ||
223 | static const bfd_byte plt_header[PLT_HEADER_SIZE] = | |
224 | { | |
225 | 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */ | |
226 | 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */ | |
227 | 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ | |
228 | 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */ | |
229 | 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */ | |
230 | 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ | |
231 | 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */ | |
232 | 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */ | |
233 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ | |
234 | }; | |
235 | ||
236 | static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] = | |
237 | { | |
238 | 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */ | |
239 | 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */ | |
240 | 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */ | |
241 | }; | |
242 | ||
243 | static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] = | |
244 | { | |
245 | 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */ | |
246 | 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/ | |
247 | 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */ | |
248 | 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */ | |
249 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ | |
250 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ | |
251 | }; | |
252 | ||
253 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
254 | ||
255 | static const bfd_byte oor_brl[16] = | |
256 | { | |
257 | 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ | |
258 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */ | |
259 | 0x00, 0x00, 0x00, 0xc0 | |
260 | }; | |
261 | ||
262 | static const bfd_byte oor_ip[48] = | |
263 | { | |
264 | 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ | |
265 | 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */ | |
266 | 0x01, 0x00, 0x00, 0x60, | |
267 | 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */ | |
268 | 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */ | |
269 | 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */ | |
270 | 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */ | |
271 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ | |
272 | 0x60, 0x00, 0x80, 0x00 /* br b6;; */ | |
273 | }; | |
274 | ||
275 | static size_t oor_branch_size = sizeof (oor_brl); | |
276 | ||
277 | void | |
278 | bfd_elfNN_ia64_after_parse (int itanium) | |
279 | { | |
280 | oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl); | |
281 | } | |
282 | \f | |
283 | ||
284 | /* Rename some of the generic section flags to better document how they | |
285 | are used here. */ | |
286 | #define skip_relax_pass_0 sec_flg0 | |
287 | #define skip_relax_pass_1 sec_flg1 | |
288 | ||
289 | /* These functions do relaxation for IA-64 ELF. */ | |
290 | ||
291 | static void | |
292 | elfNN_ia64_update_short_info (asection *sec, bfd_vma offset, | |
293 | struct elfNN_ia64_link_hash_table *ia64_info) | |
294 | { | |
295 | /* Skip ABS and SHF_IA_64_SHORT sections. */ | |
296 | if (sec == bfd_abs_section_ptr | |
297 | || (sec->flags & SEC_SMALL_DATA) != 0) | |
298 | return; | |
299 | ||
300 | if (!ia64_info->min_short_sec) | |
301 | { | |
302 | ia64_info->max_short_sec = sec; | |
303 | ia64_info->max_short_offset = offset; | |
304 | ia64_info->min_short_sec = sec; | |
305 | ia64_info->min_short_offset = offset; | |
306 | } | |
307 | else if (sec == ia64_info->max_short_sec | |
308 | && offset > ia64_info->max_short_offset) | |
309 | ia64_info->max_short_offset = offset; | |
310 | else if (sec == ia64_info->min_short_sec | |
311 | && offset < ia64_info->min_short_offset) | |
312 | ia64_info->min_short_offset = offset; | |
313 | else if (sec->output_section->vma | |
314 | > ia64_info->max_short_sec->vma) | |
315 | { | |
316 | ia64_info->max_short_sec = sec; | |
317 | ia64_info->max_short_offset = offset; | |
318 | } | |
319 | else if (sec->output_section->vma | |
320 | < ia64_info->min_short_sec->vma) | |
321 | { | |
322 | ia64_info->min_short_sec = sec; | |
323 | ia64_info->min_short_offset = offset; | |
324 | } | |
325 | } | |
326 | ||
327 | static bfd_boolean | |
328 | elfNN_ia64_relax_section (bfd *abfd, asection *sec, | |
329 | struct bfd_link_info *link_info, | |
330 | bfd_boolean *again) | |
331 | { | |
332 | struct one_fixup | |
333 | { | |
334 | struct one_fixup *next; | |
335 | asection *tsec; | |
336 | bfd_vma toff; | |
337 | bfd_vma trampoff; | |
338 | }; | |
339 | ||
340 | Elf_Internal_Shdr *symtab_hdr; | |
341 | Elf_Internal_Rela *internal_relocs; | |
342 | Elf_Internal_Rela *irel, *irelend; | |
343 | bfd_byte *contents; | |
344 | Elf_Internal_Sym *isymbuf = NULL; | |
345 | struct elfNN_ia64_link_hash_table *ia64_info; | |
346 | struct one_fixup *fixups = NULL; | |
347 | bfd_boolean changed_contents = FALSE; | |
348 | bfd_boolean changed_relocs = FALSE; | |
349 | bfd_boolean changed_got = FALSE; | |
350 | bfd_boolean skip_relax_pass_0 = TRUE; | |
351 | bfd_boolean skip_relax_pass_1 = TRUE; | |
352 | bfd_vma gp = 0; | |
353 | ||
354 | /* Assume we're not going to change any sizes, and we'll only need | |
355 | one pass. */ | |
356 | *again = FALSE; | |
357 | ||
358 | if (link_info->relocatable) | |
359 | (*link_info->callbacks->einfo) | |
360 | (_("%P%F: --relax and -r may not be used together\n")); | |
361 | ||
362 | /* Don't even try to relax for non-ELF outputs. */ | |
363 | if (!is_elf_hash_table (link_info->hash)) | |
364 | return FALSE; | |
365 | ||
366 | /* Nothing to do if there are no relocations or there is no need for | |
367 | the current pass. */ | |
368 | if ((sec->flags & SEC_RELOC) == 0 | |
369 | || sec->reloc_count == 0 | |
370 | || (link_info->relax_pass == 0 && sec->skip_relax_pass_0) | |
371 | || (link_info->relax_pass == 1 && sec->skip_relax_pass_1)) | |
372 | return TRUE; | |
373 | ||
374 | ia64_info = elfNN_ia64_hash_table (link_info); | |
375 | if (ia64_info == NULL) | |
376 | return FALSE; | |
377 | ||
378 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
379 | ||
380 | /* Load the relocations for this section. */ | |
381 | internal_relocs = (_bfd_elf_link_read_relocs | |
382 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, | |
383 | link_info->keep_memory)); | |
384 | if (internal_relocs == NULL) | |
385 | return FALSE; | |
386 | ||
387 | irelend = internal_relocs + sec->reloc_count; | |
388 | ||
389 | /* Get the section contents. */ | |
390 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
391 | contents = elf_section_data (sec)->this_hdr.contents; | |
392 | else | |
393 | { | |
394 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
395 | goto error_return; | |
396 | } | |
397 | ||
398 | for (irel = internal_relocs; irel < irelend; irel++) | |
399 | { | |
400 | unsigned long r_type = ELFNN_R_TYPE (irel->r_info); | |
401 | bfd_vma symaddr, reladdr, trampoff, toff, roff; | |
402 | asection *tsec; | |
403 | struct one_fixup *f; | |
404 | bfd_size_type amt; | |
405 | bfd_boolean is_branch; | |
406 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
407 | char symtype; | |
408 | ||
409 | switch (r_type) | |
410 | { | |
411 | case R_IA64_PCREL21B: | |
412 | case R_IA64_PCREL21BI: | |
413 | case R_IA64_PCREL21M: | |
414 | case R_IA64_PCREL21F: | |
415 | /* In pass 1, all br relaxations are done. We can skip it. */ | |
416 | if (link_info->relax_pass == 1) | |
417 | continue; | |
418 | skip_relax_pass_0 = FALSE; | |
419 | is_branch = TRUE; | |
420 | break; | |
421 | ||
422 | case R_IA64_PCREL60B: | |
423 | /* We can't optimize brl to br in pass 0 since br relaxations | |
424 | will increase the code size. Defer it to pass 1. */ | |
425 | if (link_info->relax_pass == 0) | |
426 | { | |
427 | skip_relax_pass_1 = FALSE; | |
428 | continue; | |
429 | } | |
430 | is_branch = TRUE; | |
431 | break; | |
432 | ||
433 | case R_IA64_GPREL22: | |
434 | /* Update max_short_sec/min_short_sec. */ | |
435 | ||
436 | case R_IA64_LTOFF22X: | |
437 | case R_IA64_LDXMOV: | |
438 | /* We can't relax ldx/mov in pass 0 since br relaxations will | |
439 | increase the code size. Defer it to pass 1. */ | |
440 | if (link_info->relax_pass == 0) | |
441 | { | |
442 | skip_relax_pass_1 = FALSE; | |
443 | continue; | |
444 | } | |
445 | is_branch = FALSE; | |
446 | break; | |
447 | ||
448 | default: | |
449 | continue; | |
450 | } | |
451 | ||
452 | /* Get the value of the symbol referred to by the reloc. */ | |
453 | if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
454 | { | |
455 | /* A local symbol. */ | |
456 | Elf_Internal_Sym *isym; | |
457 | ||
458 | /* Read this BFD's local symbols. */ | |
459 | if (isymbuf == NULL) | |
460 | { | |
461 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
462 | if (isymbuf == NULL) | |
463 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
464 | symtab_hdr->sh_info, 0, | |
465 | NULL, NULL, NULL); | |
466 | if (isymbuf == 0) | |
467 | goto error_return; | |
468 | } | |
469 | ||
470 | isym = isymbuf + ELFNN_R_SYM (irel->r_info); | |
471 | if (isym->st_shndx == SHN_UNDEF) | |
472 | continue; /* We can't do anything with undefined symbols. */ | |
473 | else if (isym->st_shndx == SHN_ABS) | |
474 | tsec = bfd_abs_section_ptr; | |
475 | else if (isym->st_shndx == SHN_COMMON) | |
476 | tsec = bfd_com_section_ptr; | |
477 | else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON) | |
478 | tsec = bfd_com_section_ptr; | |
479 | else | |
480 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
481 | ||
482 | toff = isym->st_value; | |
483 | dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE); | |
484 | symtype = ELF_ST_TYPE (isym->st_info); | |
485 | } | |
486 | else | |
487 | { | |
488 | unsigned long indx; | |
489 | struct elf_link_hash_entry *h; | |
490 | ||
491 | indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
492 | h = elf_sym_hashes (abfd)[indx]; | |
493 | BFD_ASSERT (h != NULL); | |
494 | ||
495 | while (h->root.type == bfd_link_hash_indirect | |
496 | || h->root.type == bfd_link_hash_warning) | |
497 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
498 | ||
499 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE); | |
500 | ||
501 | /* For branches to dynamic symbols, we're interested instead | |
502 | in a branch to the PLT entry. */ | |
503 | if (is_branch && dyn_i && dyn_i->want_plt2) | |
504 | { | |
505 | /* Internal branches shouldn't be sent to the PLT. | |
506 | Leave this for now and we'll give an error later. */ | |
507 | if (r_type != R_IA64_PCREL21B) | |
508 | continue; | |
509 | ||
510 | tsec = ia64_info->root.splt; | |
511 | toff = dyn_i->plt2_offset; | |
512 | BFD_ASSERT (irel->r_addend == 0); | |
513 | } | |
514 | ||
515 | /* Can't do anything else with dynamic symbols. */ | |
516 | else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type)) | |
517 | continue; | |
518 | ||
519 | else | |
520 | { | |
521 | /* We can't do anything with undefined symbols. */ | |
522 | if (h->root.type == bfd_link_hash_undefined | |
523 | || h->root.type == bfd_link_hash_undefweak) | |
524 | continue; | |
525 | ||
526 | tsec = h->root.u.def.section; | |
527 | toff = h->root.u.def.value; | |
528 | } | |
529 | ||
530 | symtype = h->type; | |
531 | } | |
532 | ||
533 | if (tsec->sec_info_type == ELF_INFO_TYPE_MERGE) | |
534 | { | |
535 | /* At this stage in linking, no SEC_MERGE symbol has been | |
536 | adjusted, so all references to such symbols need to be | |
537 | passed through _bfd_merged_section_offset. (Later, in | |
538 | relocate_section, all SEC_MERGE symbols *except* for | |
539 | section symbols have been adjusted.) | |
540 | ||
541 | gas may reduce relocations against symbols in SEC_MERGE | |
542 | sections to a relocation against the section symbol when | |
543 | the original addend was zero. When the reloc is against | |
544 | a section symbol we should include the addend in the | |
545 | offset passed to _bfd_merged_section_offset, since the | |
546 | location of interest is the original symbol. On the | |
547 | other hand, an access to "sym+addend" where "sym" is not | |
548 | a section symbol should not include the addend; Such an | |
549 | access is presumed to be an offset from "sym"; The | |
550 | location of interest is just "sym". */ | |
551 | if (symtype == STT_SECTION) | |
552 | toff += irel->r_addend; | |
553 | ||
554 | toff = _bfd_merged_section_offset (abfd, &tsec, | |
555 | elf_section_data (tsec)->sec_info, | |
556 | toff); | |
557 | ||
558 | if (symtype != STT_SECTION) | |
559 | toff += irel->r_addend; | |
560 | } | |
561 | else | |
562 | toff += irel->r_addend; | |
563 | ||
564 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; | |
565 | ||
566 | roff = irel->r_offset; | |
567 | ||
568 | if (is_branch) | |
569 | { | |
570 | bfd_signed_vma offset; | |
571 | ||
572 | reladdr = (sec->output_section->vma | |
573 | + sec->output_offset | |
574 | + roff) & (bfd_vma) -4; | |
575 | ||
576 | /* The .plt section is aligned at 32byte and the .text section | |
577 | is aligned at 64byte. The .text section is right after the | |
578 | .plt section. After the first relaxation pass, linker may | |
579 | increase the gap between the .plt and .text sections up | |
580 | to 32byte. We assume linker will always insert 32byte | |
581 | between the .plt and .text sections after the the first | |
582 | relaxation pass. */ | |
583 | if (tsec == ia64_info->root.splt) | |
584 | offset = -0x1000000 + 32; | |
585 | else | |
586 | offset = -0x1000000; | |
587 | ||
588 | /* If the branch is in range, no need to do anything. */ | |
d17fe7b7 | 589 | if ((bfd_signed_vma) (symaddr - reladdr) >= offset |
cbe79dfe TG |
590 | && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0) |
591 | { | |
592 | /* If the 60-bit branch is in 21-bit range, optimize it. */ | |
593 | if (r_type == R_IA64_PCREL60B) | |
594 | { | |
595 | ia64_elf_relax_brl (contents, roff); | |
596 | ||
597 | irel->r_info | |
598 | = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
599 | R_IA64_PCREL21B); | |
600 | ||
601 | /* If the original relocation offset points to slot | |
602 | 1, change it to slot 2. */ | |
603 | if ((irel->r_offset & 3) == 1) | |
604 | irel->r_offset += 1; | |
605 | } | |
606 | ||
607 | continue; | |
608 | } | |
609 | else if (r_type == R_IA64_PCREL60B) | |
610 | continue; | |
611 | else if (ia64_elf_relax_br (contents, roff)) | |
612 | { | |
613 | irel->r_info | |
614 | = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
615 | R_IA64_PCREL60B); | |
616 | ||
617 | /* Make the relocation offset point to slot 1. */ | |
618 | irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1; | |
619 | continue; | |
620 | } | |
621 | ||
622 | /* We can't put a trampoline in a .init/.fini section. Issue | |
623 | an error. */ | |
624 | if (strcmp (sec->output_section->name, ".init") == 0 | |
625 | || strcmp (sec->output_section->name, ".fini") == 0) | |
626 | { | |
627 | (*_bfd_error_handler) | |
628 | (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."), | |
629 | sec->owner, sec, (unsigned long) roff); | |
630 | bfd_set_error (bfd_error_bad_value); | |
631 | goto error_return; | |
632 | } | |
633 | ||
634 | /* If the branch and target are in the same section, you've | |
635 | got one honking big section and we can't help you unless | |
636 | you are branching backwards. You'll get an error message | |
637 | later. */ | |
638 | if (tsec == sec && toff > roff) | |
639 | continue; | |
640 | ||
641 | /* Look for an existing fixup to this address. */ | |
642 | for (f = fixups; f ; f = f->next) | |
643 | if (f->tsec == tsec && f->toff == toff) | |
644 | break; | |
645 | ||
646 | if (f == NULL) | |
647 | { | |
648 | /* Two alternatives: If it's a branch to a PLT entry, we can | |
649 | make a copy of the FULL_PLT entry. Otherwise, we'll have | |
650 | to use a `brl' insn to get where we're going. */ | |
651 | ||
652 | size_t size; | |
653 | ||
654 | if (tsec == ia64_info->root.splt) | |
655 | size = sizeof (plt_full_entry); | |
656 | else | |
657 | size = oor_branch_size; | |
658 | ||
659 | /* Resize the current section to make room for the new branch. */ | |
660 | trampoff = (sec->size + 15) & (bfd_vma) -16; | |
661 | ||
662 | /* If trampoline is out of range, there is nothing we | |
663 | can do. */ | |
664 | offset = trampoff - (roff & (bfd_vma) -4); | |
665 | if (offset < -0x1000000 || offset > 0x0FFFFF0) | |
666 | continue; | |
667 | ||
668 | amt = trampoff + size; | |
669 | contents = (bfd_byte *) bfd_realloc (contents, amt); | |
670 | if (contents == NULL) | |
671 | goto error_return; | |
672 | sec->size = amt; | |
673 | ||
674 | if (tsec == ia64_info->root.splt) | |
675 | { | |
676 | memcpy (contents + trampoff, plt_full_entry, size); | |
677 | ||
678 | /* Hijack the old relocation for use as the PLTOFF reloc. */ | |
679 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
680 | R_IA64_PLTOFF22); | |
681 | irel->r_offset = trampoff; | |
682 | } | |
683 | else | |
684 | { | |
685 | if (size == sizeof (oor_ip)) | |
686 | { | |
687 | memcpy (contents + trampoff, oor_ip, size); | |
688 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
689 | R_IA64_PCREL64I); | |
690 | irel->r_addend -= 16; | |
691 | irel->r_offset = trampoff + 2; | |
692 | } | |
693 | else | |
694 | { | |
695 | memcpy (contents + trampoff, oor_brl, size); | |
696 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
697 | R_IA64_PCREL60B); | |
698 | irel->r_offset = trampoff + 2; | |
699 | } | |
700 | ||
701 | } | |
702 | ||
703 | /* Record the fixup so we don't do it again this section. */ | |
704 | f = (struct one_fixup *) | |
705 | bfd_malloc ((bfd_size_type) sizeof (*f)); | |
706 | f->next = fixups; | |
707 | f->tsec = tsec; | |
708 | f->toff = toff; | |
709 | f->trampoff = trampoff; | |
710 | fixups = f; | |
711 | } | |
712 | else | |
713 | { | |
714 | /* If trampoline is out of range, there is nothing we | |
715 | can do. */ | |
716 | offset = f->trampoff - (roff & (bfd_vma) -4); | |
717 | if (offset < -0x1000000 || offset > 0x0FFFFF0) | |
718 | continue; | |
719 | ||
720 | /* Nop out the reloc, since we're finalizing things here. */ | |
721 | irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
722 | } | |
723 | ||
724 | /* Fix up the existing branch to hit the trampoline. */ | |
725 | if (ia64_elf_install_value (contents + roff, offset, r_type) | |
726 | != bfd_reloc_ok) | |
727 | goto error_return; | |
728 | ||
729 | changed_contents = TRUE; | |
730 | changed_relocs = TRUE; | |
731 | } | |
732 | else | |
733 | { | |
734 | /* Fetch the gp. */ | |
735 | if (gp == 0) | |
736 | { | |
737 | bfd *obfd = sec->output_section->owner; | |
738 | gp = _bfd_get_gp_value (obfd); | |
739 | if (gp == 0) | |
740 | { | |
741 | if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE)) | |
742 | goto error_return; | |
743 | gp = _bfd_get_gp_value (obfd); | |
744 | } | |
745 | } | |
746 | ||
747 | /* If the data is out of range, do nothing. */ | |
748 | if ((bfd_signed_vma) (symaddr - gp) >= 0x200000 | |
749 | ||(bfd_signed_vma) (symaddr - gp) < -0x200000) | |
750 | continue; | |
751 | ||
752 | if (r_type == R_IA64_GPREL22) | |
753 | elfNN_ia64_update_short_info (tsec->output_section, | |
754 | tsec->output_offset + toff, | |
755 | ia64_info); | |
756 | else if (r_type == R_IA64_LTOFF22X) | |
757 | { | |
758 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
759 | R_IA64_GPREL22); | |
760 | changed_relocs = TRUE; | |
761 | if (dyn_i->want_gotx) | |
762 | { | |
763 | dyn_i->want_gotx = 0; | |
764 | changed_got |= !dyn_i->want_got; | |
765 | } | |
766 | ||
767 | elfNN_ia64_update_short_info (tsec->output_section, | |
768 | tsec->output_offset + toff, | |
769 | ia64_info); | |
770 | } | |
771 | else | |
772 | { | |
773 | ia64_elf_relax_ldxmov (contents, roff); | |
774 | irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
775 | changed_contents = TRUE; | |
776 | changed_relocs = TRUE; | |
777 | } | |
778 | } | |
779 | } | |
780 | ||
781 | /* ??? If we created fixups, this may push the code segment large | |
782 | enough that the data segment moves, which will change the GP. | |
783 | Reset the GP so that we re-calculate next round. We need to | |
784 | do this at the _beginning_ of the next round; now will not do. */ | |
785 | ||
786 | /* Clean up and go home. */ | |
787 | while (fixups) | |
788 | { | |
789 | struct one_fixup *f = fixups; | |
790 | fixups = fixups->next; | |
791 | free (f); | |
792 | } | |
793 | ||
794 | if (isymbuf != NULL | |
795 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
796 | { | |
797 | if (! link_info->keep_memory) | |
798 | free (isymbuf); | |
799 | else | |
800 | { | |
801 | /* Cache the symbols for elf_link_input_bfd. */ | |
802 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
803 | } | |
804 | } | |
805 | ||
806 | if (contents != NULL | |
807 | && elf_section_data (sec)->this_hdr.contents != contents) | |
808 | { | |
809 | if (!changed_contents && !link_info->keep_memory) | |
810 | free (contents); | |
811 | else | |
812 | { | |
813 | /* Cache the section contents for elf_link_input_bfd. */ | |
814 | elf_section_data (sec)->this_hdr.contents = contents; | |
815 | } | |
816 | } | |
817 | ||
818 | if (elf_section_data (sec)->relocs != internal_relocs) | |
819 | { | |
820 | if (!changed_relocs) | |
821 | free (internal_relocs); | |
822 | else | |
823 | elf_section_data (sec)->relocs = internal_relocs; | |
824 | } | |
825 | ||
826 | if (changed_got) | |
827 | { | |
828 | struct elfNN_ia64_allocate_data data; | |
829 | data.info = link_info; | |
830 | data.ofs = 0; | |
831 | ia64_info->self_dtpmod_offset = (bfd_vma) -1; | |
832 | ||
833 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); | |
834 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); | |
835 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); | |
836 | ia64_info->root.sgot->size = data.ofs; | |
837 | ||
838 | if (ia64_info->root.dynamic_sections_created | |
839 | && ia64_info->root.srelgot != NULL) | |
840 | { | |
841 | /* Resize .rela.got. */ | |
842 | ia64_info->root.srelgot->size = 0; | |
843 | if (link_info->shared | |
844 | && ia64_info->self_dtpmod_offset != (bfd_vma) -1) | |
845 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
846 | data.only_got = TRUE; | |
847 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, | |
848 | &data); | |
849 | } | |
850 | } | |
851 | ||
852 | if (link_info->relax_pass == 0) | |
853 | { | |
854 | /* Pass 0 is only needed to relax br. */ | |
855 | sec->skip_relax_pass_0 = skip_relax_pass_0; | |
856 | sec->skip_relax_pass_1 = skip_relax_pass_1; | |
857 | } | |
858 | ||
859 | *again = changed_contents || changed_relocs; | |
860 | return TRUE; | |
861 | ||
862 | error_return: | |
863 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) | |
864 | free (isymbuf); | |
865 | if (contents != NULL | |
866 | && elf_section_data (sec)->this_hdr.contents != contents) | |
867 | free (contents); | |
868 | if (internal_relocs != NULL | |
869 | && elf_section_data (sec)->relocs != internal_relocs) | |
870 | free (internal_relocs); | |
871 | return FALSE; | |
872 | } | |
873 | #undef skip_relax_pass_0 | |
874 | #undef skip_relax_pass_1 | |
875 | \f | |
876 | /* Return TRUE if NAME is an unwind table section name. */ | |
877 | ||
878 | static inline bfd_boolean | |
879 | is_unwind_section_name (bfd *abfd, const char *name) | |
880 | { | |
881 | if (elfNN_ia64_hpux_vec (abfd->xvec) | |
882 | && !strcmp (name, ELF_STRING_ia64_unwind_hdr)) | |
883 | return FALSE; | |
884 | ||
885 | return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind) | |
886 | && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info)) | |
887 | || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once)); | |
888 | } | |
889 | ||
890 | /* Handle an IA-64 specific section when reading an object file. This | |
891 | is called when bfd_section_from_shdr finds a section with an unknown | |
892 | type. */ | |
893 | ||
894 | static bfd_boolean | |
895 | elfNN_ia64_section_from_shdr (bfd *abfd, | |
896 | Elf_Internal_Shdr *hdr, | |
897 | const char *name, | |
898 | int shindex) | |
899 | { | |
900 | /* There ought to be a place to keep ELF backend specific flags, but | |
901 | at the moment there isn't one. We just keep track of the | |
902 | sections by their name, instead. Fortunately, the ABI gives | |
903 | suggested names for all the MIPS specific sections, so we will | |
904 | probably get away with this. */ | |
905 | switch (hdr->sh_type) | |
906 | { | |
907 | case SHT_IA_64_UNWIND: | |
908 | case SHT_IA_64_HP_OPT_ANOT: | |
909 | break; | |
910 | ||
911 | case SHT_IA_64_EXT: | |
912 | if (strcmp (name, ELF_STRING_ia64_archext) != 0) | |
913 | return FALSE; | |
914 | break; | |
915 | ||
916 | default: | |
917 | return FALSE; | |
918 | } | |
919 | ||
920 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
921 | return FALSE; | |
922 | ||
923 | return TRUE; | |
924 | } | |
925 | ||
926 | /* Convert IA-64 specific section flags to bfd internal section flags. */ | |
927 | ||
928 | /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV | |
929 | flag. */ | |
930 | ||
931 | static bfd_boolean | |
932 | elfNN_ia64_section_flags (flagword *flags, | |
933 | const Elf_Internal_Shdr *hdr) | |
934 | { | |
935 | if (hdr->sh_flags & SHF_IA_64_SHORT) | |
936 | *flags |= SEC_SMALL_DATA; | |
937 | ||
938 | return TRUE; | |
939 | } | |
940 | ||
941 | /* Set the correct type for an IA-64 ELF section. We do this by the | |
942 | section name, which is a hack, but ought to work. */ | |
943 | ||
944 | static bfd_boolean | |
945 | elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, | |
946 | asection *sec) | |
947 | { | |
948 | const char *name; | |
949 | ||
950 | name = bfd_get_section_name (abfd, sec); | |
951 | ||
952 | if (is_unwind_section_name (abfd, name)) | |
953 | { | |
954 | /* We don't have the sections numbered at this point, so sh_info | |
955 | is set later, in elfNN_ia64_final_write_processing. */ | |
956 | hdr->sh_type = SHT_IA_64_UNWIND; | |
957 | hdr->sh_flags |= SHF_LINK_ORDER; | |
958 | } | |
959 | else if (strcmp (name, ELF_STRING_ia64_archext) == 0) | |
960 | hdr->sh_type = SHT_IA_64_EXT; | |
961 | else if (strcmp (name, ".HP.opt_annot") == 0) | |
962 | hdr->sh_type = SHT_IA_64_HP_OPT_ANOT; | |
963 | else if (strcmp (name, ".reloc") == 0) | |
964 | /* This is an ugly, but unfortunately necessary hack that is | |
965 | needed when producing EFI binaries on IA-64. It tells | |
966 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
967 | containing ELF relocation info. We need this hack in order to | |
968 | be able to generate ELF binaries that can be translated into | |
969 | EFI applications (which are essentially COFF objects). Those | |
970 | files contain a COFF ".reloc" section inside an ELFNN object, | |
971 | which would normally cause BFD to segfault because it would | |
972 | attempt to interpret this section as containing relocation | |
973 | entries for section "oc". With this hack enabled, ".reloc" | |
974 | will be treated as a normal data section, which will avoid the | |
975 | segfault. However, you won't be able to create an ELFNN binary | |
976 | with a section named "oc" that needs relocations, but that's | |
977 | the kind of ugly side-effects you get when detecting section | |
978 | types based on their names... In practice, this limitation is | |
979 | unlikely to bite. */ | |
980 | hdr->sh_type = SHT_PROGBITS; | |
981 | ||
982 | if (sec->flags & SEC_SMALL_DATA) | |
983 | hdr->sh_flags |= SHF_IA_64_SHORT; | |
984 | ||
985 | /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */ | |
986 | ||
987 | if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS)) | |
988 | hdr->sh_flags |= SHF_IA_64_HP_TLS; | |
989 | ||
990 | return TRUE; | |
991 | } | |
992 | ||
993 | /* The final processing done just before writing out an IA-64 ELF | |
994 | object file. */ | |
995 | ||
996 | static void | |
997 | elfNN_ia64_final_write_processing (bfd *abfd, | |
998 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
999 | { | |
1000 | Elf_Internal_Shdr *hdr; | |
1001 | asection *s; | |
1002 | ||
1003 | for (s = abfd->sections; s; s = s->next) | |
1004 | { | |
1005 | hdr = &elf_section_data (s)->this_hdr; | |
1006 | switch (hdr->sh_type) | |
1007 | { | |
1008 | case SHT_IA_64_UNWIND: | |
1009 | /* The IA-64 processor-specific ABI requires setting sh_link | |
1010 | to the unwind section, whereas HP-UX requires sh_info to | |
1011 | do so. For maximum compatibility, we'll set both for | |
1012 | now... */ | |
1013 | hdr->sh_info = hdr->sh_link; | |
1014 | break; | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | if (! elf_flags_init (abfd)) | |
1019 | { | |
1020 | unsigned long flags = 0; | |
1021 | ||
1022 | if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) | |
1023 | flags |= EF_IA_64_BE; | |
1024 | if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) | |
1025 | flags |= EF_IA_64_ABI64; | |
1026 | ||
1027 | elf_elfheader(abfd)->e_flags = flags; | |
1028 | elf_flags_init (abfd) = TRUE; | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | /* Hook called by the linker routine which adds symbols from an object | |
1033 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1034 | ||
1035 | static bfd_boolean | |
1036 | elfNN_ia64_add_symbol_hook (bfd *abfd, | |
1037 | struct bfd_link_info *info, | |
1038 | Elf_Internal_Sym *sym, | |
1039 | const char **namep ATTRIBUTE_UNUSED, | |
1040 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1041 | asection **secp, | |
1042 | bfd_vma *valp) | |
1043 | { | |
1044 | if (sym->st_shndx == SHN_COMMON | |
1045 | && !info->relocatable | |
1046 | && sym->st_size <= elf_gp_size (abfd)) | |
1047 | { | |
1048 | /* Common symbols less than or equal to -G nn bytes are | |
1049 | automatically put into .sbss. */ | |
1050 | ||
1051 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); | |
1052 | ||
1053 | if (scomm == NULL) | |
1054 | { | |
1055 | scomm = bfd_make_section_with_flags (abfd, ".scommon", | |
1056 | (SEC_ALLOC | |
1057 | | SEC_IS_COMMON | |
1058 | | SEC_LINKER_CREATED)); | |
1059 | if (scomm == NULL) | |
1060 | return FALSE; | |
1061 | } | |
1062 | ||
1063 | *secp = scomm; | |
1064 | *valp = sym->st_size; | |
1065 | } | |
1066 | ||
1067 | return TRUE; | |
1068 | } | |
1069 | ||
1070 | /* Return the number of additional phdrs we will need. */ | |
1071 | ||
1072 | static int | |
1073 | elfNN_ia64_additional_program_headers (bfd *abfd, | |
1074 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1075 | { | |
1076 | asection *s; | |
1077 | int ret = 0; | |
1078 | ||
1079 | /* See if we need a PT_IA_64_ARCHEXT segment. */ | |
1080 | s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); | |
1081 | if (s && (s->flags & SEC_LOAD)) | |
1082 | ++ret; | |
1083 | ||
1084 | /* Count how many PT_IA_64_UNWIND segments we need. */ | |
1085 | for (s = abfd->sections; s; s = s->next) | |
1086 | if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD)) | |
1087 | ++ret; | |
1088 | ||
1089 | return ret; | |
1090 | } | |
1091 | ||
1092 | static bfd_boolean | |
1093 | elfNN_ia64_modify_segment_map (bfd *abfd, | |
1094 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1095 | { | |
1096 | struct elf_segment_map *m, **pm; | |
1097 | Elf_Internal_Shdr *hdr; | |
1098 | asection *s; | |
1099 | ||
1100 | /* If we need a PT_IA_64_ARCHEXT segment, it must come before | |
1101 | all PT_LOAD segments. */ | |
1102 | s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); | |
1103 | if (s && (s->flags & SEC_LOAD)) | |
1104 | { | |
1105 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
1106 | if (m->p_type == PT_IA_64_ARCHEXT) | |
1107 | break; | |
1108 | if (m == NULL) | |
1109 | { | |
1110 | m = ((struct elf_segment_map *) | |
1111 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
1112 | if (m == NULL) | |
1113 | return FALSE; | |
1114 | ||
1115 | m->p_type = PT_IA_64_ARCHEXT; | |
1116 | m->count = 1; | |
1117 | m->sections[0] = s; | |
1118 | ||
1119 | /* We want to put it after the PHDR and INTERP segments. */ | |
1120 | pm = &elf_tdata (abfd)->segment_map; | |
1121 | while (*pm != NULL | |
1122 | && ((*pm)->p_type == PT_PHDR | |
1123 | || (*pm)->p_type == PT_INTERP)) | |
1124 | pm = &(*pm)->next; | |
1125 | ||
1126 | m->next = *pm; | |
1127 | *pm = m; | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | /* Install PT_IA_64_UNWIND segments, if needed. */ | |
1132 | for (s = abfd->sections; s; s = s->next) | |
1133 | { | |
1134 | hdr = &elf_section_data (s)->this_hdr; | |
1135 | if (hdr->sh_type != SHT_IA_64_UNWIND) | |
1136 | continue; | |
1137 | ||
1138 | if (s && (s->flags & SEC_LOAD)) | |
1139 | { | |
1140 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
1141 | if (m->p_type == PT_IA_64_UNWIND) | |
1142 | { | |
1143 | int i; | |
1144 | ||
1145 | /* Look through all sections in the unwind segment | |
1146 | for a match since there may be multiple sections | |
1147 | to a segment. */ | |
1148 | for (i = m->count - 1; i >= 0; --i) | |
1149 | if (m->sections[i] == s) | |
1150 | break; | |
1151 | ||
1152 | if (i >= 0) | |
1153 | break; | |
1154 | } | |
1155 | ||
1156 | if (m == NULL) | |
1157 | { | |
1158 | m = ((struct elf_segment_map *) | |
1159 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
1160 | if (m == NULL) | |
1161 | return FALSE; | |
1162 | ||
1163 | m->p_type = PT_IA_64_UNWIND; | |
1164 | m->count = 1; | |
1165 | m->sections[0] = s; | |
1166 | m->next = NULL; | |
1167 | ||
1168 | /* We want to put it last. */ | |
1169 | pm = &elf_tdata (abfd)->segment_map; | |
1170 | while (*pm != NULL) | |
1171 | pm = &(*pm)->next; | |
1172 | *pm = m; | |
1173 | } | |
1174 | } | |
1175 | } | |
1176 | ||
1177 | return TRUE; | |
1178 | } | |
1179 | ||
1180 | /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of | |
1181 | the input sections for each output section in the segment and testing | |
1182 | for SHF_IA_64_NORECOV on each. */ | |
1183 | ||
1184 | static bfd_boolean | |
1185 | elfNN_ia64_modify_program_headers (bfd *abfd, | |
1186 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1187 | { | |
1188 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
1189 | struct elf_segment_map *m; | |
1190 | Elf_Internal_Phdr *p; | |
1191 | ||
1192 | for (p = tdata->phdr, m = tdata->segment_map; m != NULL; m = m->next, p++) | |
1193 | if (m->p_type == PT_LOAD) | |
1194 | { | |
1195 | int i; | |
1196 | for (i = m->count - 1; i >= 0; --i) | |
1197 | { | |
1198 | struct bfd_link_order *order = m->sections[i]->map_head.link_order; | |
1199 | ||
1200 | while (order != NULL) | |
1201 | { | |
1202 | if (order->type == bfd_indirect_link_order) | |
1203 | { | |
1204 | asection *is = order->u.indirect.section; | |
1205 | bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags; | |
1206 | if (flags & SHF_IA_64_NORECOV) | |
1207 | { | |
1208 | p->p_flags |= PF_IA_64_NORECOV; | |
1209 | goto found; | |
1210 | } | |
1211 | } | |
1212 | order = order->next; | |
1213 | } | |
1214 | } | |
1215 | found:; | |
1216 | } | |
1217 | ||
1218 | return TRUE; | |
1219 | } | |
1220 | ||
1221 | /* According to the Tahoe assembler spec, all labels starting with a | |
1222 | '.' are local. */ | |
1223 | ||
1224 | static bfd_boolean | |
1225 | elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, | |
1226 | const char *name) | |
1227 | { | |
1228 | return name[0] == '.'; | |
1229 | } | |
1230 | ||
1231 | /* Should we do dynamic things to this symbol? */ | |
1232 | ||
1233 | static bfd_boolean | |
1234 | elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h, | |
1235 | struct bfd_link_info *info, int r_type) | |
1236 | { | |
1237 | bfd_boolean ignore_protected | |
1238 | = ((r_type & 0xf8) == 0x40 /* FPTR relocs */ | |
1239 | || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */ | |
1240 | ||
1241 | return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected); | |
1242 | } | |
1243 | \f | |
1244 | static struct bfd_hash_entry* | |
1245 | elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry, | |
1246 | struct bfd_hash_table *table, | |
1247 | const char *string) | |
1248 | { | |
1249 | struct elfNN_ia64_link_hash_entry *ret; | |
1250 | ret = (struct elfNN_ia64_link_hash_entry *) entry; | |
1251 | ||
1252 | /* Allocate the structure if it has not already been allocated by a | |
1253 | subclass. */ | |
1254 | if (!ret) | |
1255 | ret = bfd_hash_allocate (table, sizeof (*ret)); | |
1256 | ||
1257 | if (!ret) | |
1258 | return 0; | |
1259 | ||
1260 | /* Call the allocation method of the superclass. */ | |
1261 | ret = ((struct elfNN_ia64_link_hash_entry *) | |
1262 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1263 | table, string)); | |
1264 | ||
1265 | ret->info = NULL; | |
1266 | ret->count = 0; | |
1267 | ret->sorted_count = 0; | |
1268 | ret->size = 0; | |
1269 | return (struct bfd_hash_entry *) ret; | |
1270 | } | |
1271 | ||
1272 | static void | |
1273 | elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info, | |
1274 | struct elf_link_hash_entry *xdir, | |
1275 | struct elf_link_hash_entry *xind) | |
1276 | { | |
1277 | struct elfNN_ia64_link_hash_entry *dir, *ind; | |
1278 | ||
1279 | dir = (struct elfNN_ia64_link_hash_entry *) xdir; | |
1280 | ind = (struct elfNN_ia64_link_hash_entry *) xind; | |
1281 | ||
1282 | /* Copy down any references that we may have already seen to the | |
1283 | symbol which just became indirect. */ | |
1284 | ||
1285 | dir->root.ref_dynamic |= ind->root.ref_dynamic; | |
1286 | dir->root.ref_regular |= ind->root.ref_regular; | |
1287 | dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak; | |
1288 | dir->root.needs_plt |= ind->root.needs_plt; | |
1289 | ||
1290 | if (ind->root.root.type != bfd_link_hash_indirect) | |
1291 | return; | |
1292 | ||
1293 | /* Copy over the got and plt data. This would have been done | |
1294 | by check_relocs. */ | |
1295 | ||
1296 | if (ind->info != NULL) | |
1297 | { | |
1298 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1299 | unsigned int count; | |
1300 | ||
1301 | if (dir->info) | |
1302 | free (dir->info); | |
1303 | ||
1304 | dir->info = ind->info; | |
1305 | dir->count = ind->count; | |
1306 | dir->sorted_count = ind->sorted_count; | |
1307 | dir->size = ind->size; | |
1308 | ||
1309 | ind->info = NULL; | |
1310 | ind->count = 0; | |
1311 | ind->sorted_count = 0; | |
1312 | ind->size = 0; | |
1313 | ||
1314 | /* Fix up the dyn_sym_info pointers to the global symbol. */ | |
1315 | for (count = dir->count, dyn_i = dir->info; | |
1316 | count != 0; | |
1317 | count--, dyn_i++) | |
1318 | dyn_i->h = &dir->root; | |
1319 | } | |
1320 | ||
1321 | /* Copy over the dynindx. */ | |
1322 | ||
1323 | if (ind->root.dynindx != -1) | |
1324 | { | |
1325 | if (dir->root.dynindx != -1) | |
1326 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1327 | dir->root.dynstr_index); | |
1328 | dir->root.dynindx = ind->root.dynindx; | |
1329 | dir->root.dynstr_index = ind->root.dynstr_index; | |
1330 | ind->root.dynindx = -1; | |
1331 | ind->root.dynstr_index = 0; | |
1332 | } | |
1333 | } | |
1334 | ||
1335 | static void | |
1336 | elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info, | |
1337 | struct elf_link_hash_entry *xh, | |
1338 | bfd_boolean force_local) | |
1339 | { | |
1340 | struct elfNN_ia64_link_hash_entry *h; | |
1341 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1342 | unsigned int count; | |
1343 | ||
1344 | h = (struct elfNN_ia64_link_hash_entry *)xh; | |
1345 | ||
1346 | _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); | |
1347 | ||
1348 | for (count = h->count, dyn_i = h->info; | |
1349 | count != 0; | |
1350 | count--, dyn_i++) | |
1351 | { | |
1352 | dyn_i->want_plt2 = 0; | |
1353 | dyn_i->want_plt = 0; | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | /* Compute a hash of a local hash entry. */ | |
1358 | ||
1359 | static hashval_t | |
1360 | elfNN_ia64_local_htab_hash (const void *ptr) | |
1361 | { | |
1362 | struct elfNN_ia64_local_hash_entry *entry | |
1363 | = (struct elfNN_ia64_local_hash_entry *) ptr; | |
1364 | ||
1365 | return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym); | |
1366 | } | |
1367 | ||
1368 | /* Compare local hash entries. */ | |
1369 | ||
1370 | static int | |
1371 | elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2) | |
1372 | { | |
1373 | struct elfNN_ia64_local_hash_entry *entry1 | |
1374 | = (struct elfNN_ia64_local_hash_entry *) ptr1; | |
1375 | struct elfNN_ia64_local_hash_entry *entry2 | |
1376 | = (struct elfNN_ia64_local_hash_entry *) ptr2; | |
1377 | ||
1378 | return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym; | |
1379 | } | |
1380 | ||
1381 | /* Create the derived linker hash table. The IA-64 ELF port uses this | |
1382 | derived hash table to keep information specific to the IA-64 ElF | |
1383 | linker (without using static variables). */ | |
1384 | ||
1385 | static struct bfd_link_hash_table * | |
1386 | elfNN_ia64_hash_table_create (bfd *abfd) | |
1387 | { | |
1388 | struct elfNN_ia64_link_hash_table *ret; | |
1389 | ||
1390 | ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret)); | |
1391 | if (!ret) | |
1392 | return NULL; | |
1393 | ||
1394 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
1395 | elfNN_ia64_new_elf_hash_entry, | |
1396 | sizeof (struct elfNN_ia64_link_hash_entry), | |
1397 | IA64_ELF_DATA)) | |
1398 | { | |
1399 | free (ret); | |
1400 | return NULL; | |
1401 | } | |
1402 | ||
1403 | ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash, | |
1404 | elfNN_ia64_local_htab_eq, NULL); | |
1405 | ret->loc_hash_memory = objalloc_create (); | |
1406 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
1407 | { | |
1408 | free (ret); | |
1409 | return NULL; | |
1410 | } | |
1411 | ||
1412 | return &ret->root.root; | |
1413 | } | |
1414 | ||
1415 | /* Free the global elfNN_ia64_dyn_sym_info array. */ | |
1416 | ||
1417 | static bfd_boolean | |
1418 | elfNN_ia64_global_dyn_info_free (void **xentry, | |
1419 | PTR unused ATTRIBUTE_UNUSED) | |
1420 | { | |
1421 | struct elfNN_ia64_link_hash_entry *entry | |
1422 | = (struct elfNN_ia64_link_hash_entry *) xentry; | |
1423 | ||
cbe79dfe TG |
1424 | if (entry->info) |
1425 | { | |
1426 | free (entry->info); | |
1427 | entry->info = NULL; | |
1428 | entry->count = 0; | |
1429 | entry->sorted_count = 0; | |
1430 | entry->size = 0; | |
1431 | } | |
1432 | ||
1433 | return TRUE; | |
1434 | } | |
1435 | ||
1436 | /* Free the local elfNN_ia64_dyn_sym_info array. */ | |
1437 | ||
1438 | static bfd_boolean | |
1439 | elfNN_ia64_local_dyn_info_free (void **slot, | |
1440 | PTR unused ATTRIBUTE_UNUSED) | |
1441 | { | |
1442 | struct elfNN_ia64_local_hash_entry *entry | |
1443 | = (struct elfNN_ia64_local_hash_entry *) *slot; | |
1444 | ||
1445 | if (entry->info) | |
1446 | { | |
1447 | free (entry->info); | |
1448 | entry->info = NULL; | |
1449 | entry->count = 0; | |
1450 | entry->sorted_count = 0; | |
1451 | entry->size = 0; | |
1452 | } | |
1453 | ||
1454 | return TRUE; | |
1455 | } | |
1456 | ||
1457 | /* Destroy IA-64 linker hash table. */ | |
1458 | ||
1459 | static void | |
1460 | elfNN_ia64_hash_table_free (struct bfd_link_hash_table *hash) | |
1461 | { | |
1462 | struct elfNN_ia64_link_hash_table *ia64_info | |
1463 | = (struct elfNN_ia64_link_hash_table *) hash; | |
1464 | if (ia64_info->loc_hash_table) | |
1465 | { | |
1466 | htab_traverse (ia64_info->loc_hash_table, | |
1467 | elfNN_ia64_local_dyn_info_free, NULL); | |
1468 | htab_delete (ia64_info->loc_hash_table); | |
1469 | } | |
1470 | if (ia64_info->loc_hash_memory) | |
1471 | objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory); | |
1472 | elf_link_hash_traverse (&ia64_info->root, | |
1473 | elfNN_ia64_global_dyn_info_free, NULL); | |
1474 | _bfd_generic_link_hash_table_free (hash); | |
1475 | } | |
1476 | ||
1477 | /* Traverse both local and global hash tables. */ | |
1478 | ||
1479 | struct elfNN_ia64_dyn_sym_traverse_data | |
1480 | { | |
1481 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR); | |
1482 | PTR data; | |
1483 | }; | |
1484 | ||
1485 | static bfd_boolean | |
1486 | elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry, | |
1487 | PTR xdata) | |
1488 | { | |
1489 | struct elfNN_ia64_link_hash_entry *entry | |
1490 | = (struct elfNN_ia64_link_hash_entry *) xentry; | |
1491 | struct elfNN_ia64_dyn_sym_traverse_data *data | |
1492 | = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; | |
1493 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1494 | unsigned int count; | |
1495 | ||
cbe79dfe TG |
1496 | for (count = entry->count, dyn_i = entry->info; |
1497 | count != 0; | |
1498 | count--, dyn_i++) | |
1499 | if (! (*data->func) (dyn_i, data->data)) | |
1500 | return FALSE; | |
1501 | return TRUE; | |
1502 | } | |
1503 | ||
1504 | static bfd_boolean | |
1505 | elfNN_ia64_local_dyn_sym_thunk (void **slot, PTR xdata) | |
1506 | { | |
1507 | struct elfNN_ia64_local_hash_entry *entry | |
1508 | = (struct elfNN_ia64_local_hash_entry *) *slot; | |
1509 | struct elfNN_ia64_dyn_sym_traverse_data *data | |
1510 | = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; | |
1511 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1512 | unsigned int count; | |
1513 | ||
1514 | for (count = entry->count, dyn_i = entry->info; | |
1515 | count != 0; | |
1516 | count--, dyn_i++) | |
1517 | if (! (*data->func) (dyn_i, data->data)) | |
1518 | return FALSE; | |
1519 | return TRUE; | |
1520 | } | |
1521 | ||
1522 | static void | |
1523 | elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info, | |
1524 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR), | |
1525 | PTR data) | |
1526 | { | |
1527 | struct elfNN_ia64_dyn_sym_traverse_data xdata; | |
1528 | ||
1529 | xdata.func = func; | |
1530 | xdata.data = data; | |
1531 | ||
1532 | elf_link_hash_traverse (&ia64_info->root, | |
1533 | elfNN_ia64_global_dyn_sym_thunk, &xdata); | |
1534 | htab_traverse (ia64_info->loc_hash_table, | |
1535 | elfNN_ia64_local_dyn_sym_thunk, &xdata); | |
1536 | } | |
1537 | \f | |
1538 | static bfd_boolean | |
1539 | elfNN_ia64_create_dynamic_sections (bfd *abfd, | |
1540 | struct bfd_link_info *info) | |
1541 | { | |
1542 | struct elfNN_ia64_link_hash_table *ia64_info; | |
1543 | asection *s; | |
1544 | ||
1545 | if (! _bfd_elf_create_dynamic_sections (abfd, info)) | |
1546 | return FALSE; | |
1547 | ||
1548 | ia64_info = elfNN_ia64_hash_table (info); | |
1549 | if (ia64_info == NULL) | |
1550 | return FALSE; | |
1551 | ||
1552 | { | |
1553 | flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot); | |
1554 | bfd_set_section_flags (abfd, ia64_info->root.sgot, | |
1555 | SEC_SMALL_DATA | flags); | |
1556 | /* The .got section is always aligned at 8 bytes. */ | |
1557 | bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3); | |
1558 | } | |
1559 | ||
1560 | if (!get_pltoff (abfd, info, ia64_info)) | |
1561 | return FALSE; | |
1562 | ||
1563 | s = bfd_make_section_with_flags (abfd, ".rela.IA_64.pltoff", | |
1564 | (SEC_ALLOC | SEC_LOAD | |
1565 | | SEC_HAS_CONTENTS | |
1566 | | SEC_IN_MEMORY | |
1567 | | SEC_LINKER_CREATED | |
1568 | | SEC_READONLY)); | |
1569 | if (s == NULL | |
1570 | || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN)) | |
1571 | return FALSE; | |
1572 | ia64_info->rel_pltoff_sec = s; | |
1573 | ||
1574 | return TRUE; | |
1575 | } | |
1576 | ||
1577 | /* Find and/or create a hash entry for local symbol. */ | |
1578 | static struct elfNN_ia64_local_hash_entry * | |
1579 | get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info, | |
1580 | bfd *abfd, const Elf_Internal_Rela *rel, | |
1581 | bfd_boolean create) | |
1582 | { | |
1583 | struct elfNN_ia64_local_hash_entry e, *ret; | |
1584 | asection *sec = abfd->sections; | |
1585 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
1586 | ELFNN_R_SYM (rel->r_info)); | |
1587 | void **slot; | |
1588 | ||
1589 | e.id = sec->id; | |
1590 | e.r_sym = ELFNN_R_SYM (rel->r_info); | |
1591 | slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h, | |
1592 | create ? INSERT : NO_INSERT); | |
1593 | ||
1594 | if (!slot) | |
1595 | return NULL; | |
1596 | ||
1597 | if (*slot) | |
1598 | return (struct elfNN_ia64_local_hash_entry *) *slot; | |
1599 | ||
1600 | ret = (struct elfNN_ia64_local_hash_entry *) | |
1601 | objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory, | |
1602 | sizeof (struct elfNN_ia64_local_hash_entry)); | |
1603 | if (ret) | |
1604 | { | |
1605 | memset (ret, 0, sizeof (*ret)); | |
1606 | ret->id = sec->id; | |
1607 | ret->r_sym = ELFNN_R_SYM (rel->r_info); | |
1608 | *slot = ret; | |
1609 | } | |
1610 | return ret; | |
1611 | } | |
1612 | ||
1613 | /* Used to sort elfNN_ia64_dyn_sym_info array. */ | |
1614 | ||
1615 | static int | |
1616 | addend_compare (const void *xp, const void *yp) | |
1617 | { | |
1618 | const struct elfNN_ia64_dyn_sym_info *x | |
1619 | = (const struct elfNN_ia64_dyn_sym_info *) xp; | |
1620 | const struct elfNN_ia64_dyn_sym_info *y | |
1621 | = (const struct elfNN_ia64_dyn_sym_info *) yp; | |
1622 | ||
1623 | return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0; | |
1624 | } | |
1625 | ||
1626 | /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */ | |
1627 | ||
1628 | static unsigned int | |
1629 | sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info, | |
1630 | unsigned int count) | |
1631 | { | |
1632 | bfd_vma curr, prev, got_offset; | |
1633 | unsigned int i, kept, dupes, diff, dest, src, len; | |
1634 | ||
1635 | qsort (info, count, sizeof (*info), addend_compare); | |
1636 | ||
1637 | /* Find the first duplicate. */ | |
1638 | prev = info [0].addend; | |
1639 | got_offset = info [0].got_offset; | |
1640 | for (i = 1; i < count; i++) | |
1641 | { | |
1642 | curr = info [i].addend; | |
1643 | if (curr == prev) | |
1644 | { | |
1645 | /* For duplicates, make sure that GOT_OFFSET is valid. */ | |
1646 | if (got_offset == (bfd_vma) -1) | |
1647 | got_offset = info [i].got_offset; | |
1648 | break; | |
1649 | } | |
1650 | got_offset = info [i].got_offset; | |
1651 | prev = curr; | |
1652 | } | |
1653 | ||
1654 | /* We may move a block of elements to here. */ | |
1655 | dest = i++; | |
1656 | ||
1657 | /* Remove duplicates. */ | |
1658 | if (i < count) | |
1659 | { | |
1660 | while (i < count) | |
1661 | { | |
1662 | /* For duplicates, make sure that the kept one has a valid | |
1663 | got_offset. */ | |
1664 | kept = dest - 1; | |
1665 | if (got_offset != (bfd_vma) -1) | |
1666 | info [kept].got_offset = got_offset; | |
1667 | ||
1668 | curr = info [i].addend; | |
1669 | got_offset = info [i].got_offset; | |
1670 | ||
1671 | /* Move a block of elements whose first one is different from | |
1672 | the previous. */ | |
1673 | if (curr == prev) | |
1674 | { | |
1675 | for (src = i + 1; src < count; src++) | |
1676 | { | |
1677 | if (info [src].addend != curr) | |
1678 | break; | |
1679 | /* For duplicates, make sure that GOT_OFFSET is | |
1680 | valid. */ | |
1681 | if (got_offset == (bfd_vma) -1) | |
1682 | got_offset = info [src].got_offset; | |
1683 | } | |
1684 | ||
1685 | /* Make sure that the kept one has a valid got_offset. */ | |
1686 | if (got_offset != (bfd_vma) -1) | |
1687 | info [kept].got_offset = got_offset; | |
1688 | } | |
1689 | else | |
1690 | src = i; | |
1691 | ||
1692 | if (src >= count) | |
1693 | break; | |
1694 | ||
1695 | /* Find the next duplicate. SRC will be kept. */ | |
1696 | prev = info [src].addend; | |
1697 | got_offset = info [src].got_offset; | |
1698 | for (dupes = src + 1; dupes < count; dupes ++) | |
1699 | { | |
1700 | curr = info [dupes].addend; | |
1701 | if (curr == prev) | |
1702 | { | |
1703 | /* Make sure that got_offset is valid. */ | |
1704 | if (got_offset == (bfd_vma) -1) | |
1705 | got_offset = info [dupes].got_offset; | |
1706 | ||
1707 | /* For duplicates, make sure that the kept one has | |
1708 | a valid got_offset. */ | |
1709 | if (got_offset != (bfd_vma) -1) | |
1710 | info [dupes - 1].got_offset = got_offset; | |
1711 | break; | |
1712 | } | |
1713 | got_offset = info [dupes].got_offset; | |
1714 | prev = curr; | |
1715 | } | |
1716 | ||
1717 | /* How much to move. */ | |
1718 | len = dupes - src; | |
1719 | i = dupes + 1; | |
1720 | ||
1721 | if (len == 1 && dupes < count) | |
1722 | { | |
1723 | /* If we only move 1 element, we combine it with the next | |
1724 | one. There must be at least a duplicate. Find the | |
1725 | next different one. */ | |
1726 | for (diff = dupes + 1, src++; diff < count; diff++, src++) | |
1727 | { | |
1728 | if (info [diff].addend != curr) | |
1729 | break; | |
1730 | /* Make sure that got_offset is valid. */ | |
1731 | if (got_offset == (bfd_vma) -1) | |
1732 | got_offset = info [diff].got_offset; | |
1733 | } | |
1734 | ||
1735 | /* Makre sure that the last duplicated one has an valid | |
1736 | offset. */ | |
1737 | BFD_ASSERT (curr == prev); | |
1738 | if (got_offset != (bfd_vma) -1) | |
1739 | info [diff - 1].got_offset = got_offset; | |
1740 | ||
1741 | if (diff < count) | |
1742 | { | |
1743 | /* Find the next duplicate. Track the current valid | |
1744 | offset. */ | |
1745 | prev = info [diff].addend; | |
1746 | got_offset = info [diff].got_offset; | |
1747 | for (dupes = diff + 1; dupes < count; dupes ++) | |
1748 | { | |
1749 | curr = info [dupes].addend; | |
1750 | if (curr == prev) | |
1751 | { | |
1752 | /* For duplicates, make sure that GOT_OFFSET | |
1753 | is valid. */ | |
1754 | if (got_offset == (bfd_vma) -1) | |
1755 | got_offset = info [dupes].got_offset; | |
1756 | break; | |
1757 | } | |
1758 | got_offset = info [dupes].got_offset; | |
1759 | prev = curr; | |
1760 | diff++; | |
1761 | } | |
1762 | ||
1763 | len = diff - src + 1; | |
1764 | i = diff + 1; | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | memmove (&info [dest], &info [src], len * sizeof (*info)); | |
1769 | ||
1770 | dest += len; | |
1771 | } | |
1772 | ||
1773 | count = dest; | |
1774 | } | |
1775 | else | |
1776 | { | |
1777 | /* When we get here, either there is no duplicate at all or | |
1778 | the only duplicate is the last element. */ | |
1779 | if (dest < count) | |
1780 | { | |
1781 | /* If the last element is a duplicate, make sure that the | |
1782 | kept one has a valid got_offset. We also update count. */ | |
1783 | if (got_offset != (bfd_vma) -1) | |
1784 | info [dest - 1].got_offset = got_offset; | |
1785 | count = dest; | |
1786 | } | |
1787 | } | |
1788 | ||
1789 | return count; | |
1790 | } | |
1791 | ||
1792 | /* Find and/or create a descriptor for dynamic symbol info. This will | |
1793 | vary based on global or local symbol, and the addend to the reloc. | |
1794 | ||
1795 | We don't sort when inserting. Also, we sort and eliminate | |
1796 | duplicates if there is an unsorted section. Typically, this will | |
1797 | only happen once, because we do all insertions before lookups. We | |
1798 | then use bsearch to do a lookup. This also allows lookups to be | |
1799 | fast. So we have fast insertion (O(log N) due to duplicate check), | |
1800 | fast lookup (O(log N)) and one sort (O(N log N) expected time). | |
1801 | Previously, all lookups were O(N) because of the use of the linked | |
1802 | list and also all insertions were O(N) because of the check for | |
1803 | duplicates. There are some complications here because the array | |
1804 | size grows occasionally, which may add an O(N) factor, but this | |
1805 | should be rare. Also, we free the excess array allocation, which | |
1806 | requires a copy which is O(N), but this only happens once. */ | |
1807 | ||
1808 | static struct elfNN_ia64_dyn_sym_info * | |
1809 | get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info, | |
1810 | struct elf_link_hash_entry *h, bfd *abfd, | |
1811 | const Elf_Internal_Rela *rel, bfd_boolean create) | |
1812 | { | |
1813 | struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key; | |
1814 | unsigned int *count_p, *sorted_count_p, *size_p; | |
1815 | unsigned int count, sorted_count, size; | |
1816 | bfd_vma addend = rel ? rel->r_addend : 0; | |
1817 | bfd_size_type amt; | |
1818 | ||
1819 | if (h) | |
1820 | { | |
1821 | struct elfNN_ia64_link_hash_entry *global_h; | |
1822 | ||
1823 | global_h = (struct elfNN_ia64_link_hash_entry *) h; | |
1824 | info_p = &global_h->info; | |
1825 | count_p = &global_h->count; | |
1826 | sorted_count_p = &global_h->sorted_count; | |
1827 | size_p = &global_h->size; | |
1828 | } | |
1829 | else | |
1830 | { | |
1831 | struct elfNN_ia64_local_hash_entry *loc_h; | |
1832 | ||
1833 | loc_h = get_local_sym_hash (ia64_info, abfd, rel, create); | |
1834 | if (!loc_h) | |
1835 | { | |
1836 | BFD_ASSERT (!create); | |
1837 | return NULL; | |
1838 | } | |
1839 | ||
1840 | info_p = &loc_h->info; | |
1841 | count_p = &loc_h->count; | |
1842 | sorted_count_p = &loc_h->sorted_count; | |
1843 | size_p = &loc_h->size; | |
1844 | } | |
1845 | ||
1846 | count = *count_p; | |
1847 | sorted_count = *sorted_count_p; | |
1848 | size = *size_p; | |
1849 | info = *info_p; | |
1850 | if (create) | |
1851 | { | |
1852 | /* When we create the array, we don't check for duplicates, | |
1853 | except in the previously sorted section if one exists, and | |
1854 | against the last inserted entry. This allows insertions to | |
1855 | be fast. */ | |
1856 | if (info) | |
1857 | { | |
1858 | if (sorted_count) | |
1859 | { | |
1860 | /* Try bsearch first on the sorted section. */ | |
1861 | key.addend = addend; | |
1862 | dyn_i = bsearch (&key, info, sorted_count, | |
1863 | sizeof (*info), addend_compare); | |
1864 | ||
1865 | if (dyn_i) | |
1866 | { | |
1867 | return dyn_i; | |
1868 | } | |
1869 | } | |
1870 | ||
1871 | /* Do a quick check for the last inserted entry. */ | |
1872 | dyn_i = info + count - 1; | |
1873 | if (dyn_i->addend == addend) | |
1874 | { | |
1875 | return dyn_i; | |
1876 | } | |
1877 | } | |
1878 | ||
1879 | if (size == 0) | |
1880 | { | |
1881 | /* It is the very first element. We create the array of size | |
1882 | 1. */ | |
1883 | size = 1; | |
1884 | amt = size * sizeof (*info); | |
1885 | info = bfd_malloc (amt); | |
1886 | } | |
1887 | else if (size <= count) | |
1888 | { | |
1889 | /* We double the array size every time when we reach the | |
1890 | size limit. */ | |
1891 | size += size; | |
1892 | amt = size * sizeof (*info); | |
1893 | info = bfd_realloc (info, amt); | |
1894 | } | |
1895 | else | |
1896 | goto has_space; | |
1897 | ||
1898 | if (info == NULL) | |
1899 | return NULL; | |
1900 | *size_p = size; | |
1901 | *info_p = info; | |
1902 | ||
1903 | has_space: | |
1904 | /* Append the new one to the array. */ | |
1905 | dyn_i = info + count; | |
1906 | memset (dyn_i, 0, sizeof (*dyn_i)); | |
1907 | dyn_i->got_offset = (bfd_vma) -1; | |
1908 | dyn_i->addend = addend; | |
1909 | ||
1910 | /* We increment count only since the new ones are unsorted and | |
1911 | may have duplicate. */ | |
1912 | (*count_p)++; | |
1913 | } | |
1914 | else | |
1915 | { | |
1916 | /* It is a lookup without insertion. Sort array if part of the | |
1917 | array isn't sorted. */ | |
1918 | if (count != sorted_count) | |
1919 | { | |
1920 | count = sort_dyn_sym_info (info, count); | |
1921 | *count_p = count; | |
1922 | *sorted_count_p = count; | |
1923 | } | |
1924 | ||
1925 | /* Free unused memory. */ | |
1926 | if (size != count) | |
1927 | { | |
1928 | amt = count * sizeof (*info); | |
1929 | info = bfd_malloc (amt); | |
1930 | if (info != NULL) | |
1931 | { | |
1932 | memcpy (info, *info_p, amt); | |
1933 | free (*info_p); | |
1934 | *size_p = count; | |
1935 | *info_p = info; | |
1936 | } | |
1937 | } | |
1938 | ||
1939 | key.addend = addend; | |
1940 | dyn_i = bsearch (&key, info, count, | |
1941 | sizeof (*info), addend_compare); | |
1942 | } | |
1943 | ||
1944 | return dyn_i; | |
1945 | } | |
1946 | ||
1947 | static asection * | |
1948 | get_got (bfd *abfd, struct bfd_link_info *info, | |
1949 | struct elfNN_ia64_link_hash_table *ia64_info) | |
1950 | { | |
1951 | asection *got; | |
1952 | bfd *dynobj; | |
1953 | ||
1954 | got = ia64_info->root.sgot; | |
1955 | if (!got) | |
1956 | { | |
1957 | flagword flags; | |
1958 | ||
1959 | dynobj = ia64_info->root.dynobj; | |
1960 | if (!dynobj) | |
1961 | ia64_info->root.dynobj = dynobj = abfd; | |
1962 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
1963 | return 0; | |
1964 | ||
1965 | got = ia64_info->root.sgot; | |
1966 | ||
1967 | /* The .got section is always aligned at 8 bytes. */ | |
1968 | if (!bfd_set_section_alignment (abfd, got, 3)) | |
1969 | return 0; | |
1970 | ||
1971 | flags = bfd_get_section_flags (abfd, got); | |
1972 | bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags); | |
1973 | } | |
1974 | ||
1975 | return got; | |
1976 | } | |
1977 | ||
1978 | /* Create function descriptor section (.opd). This section is called .opd | |
1979 | because it contains "official procedure descriptors". The "official" | |
1980 | refers to the fact that these descriptors are used when taking the address | |
1981 | of a procedure, thus ensuring a unique address for each procedure. */ | |
1982 | ||
1983 | static asection * | |
1984 | get_fptr (bfd *abfd, struct bfd_link_info *info, | |
1985 | struct elfNN_ia64_link_hash_table *ia64_info) | |
1986 | { | |
1987 | asection *fptr; | |
1988 | bfd *dynobj; | |
1989 | ||
1990 | fptr = ia64_info->fptr_sec; | |
1991 | if (!fptr) | |
1992 | { | |
1993 | dynobj = ia64_info->root.dynobj; | |
1994 | if (!dynobj) | |
1995 | ia64_info->root.dynobj = dynobj = abfd; | |
1996 | ||
1997 | fptr = bfd_make_section_with_flags (dynobj, ".opd", | |
1998 | (SEC_ALLOC | |
1999 | | SEC_LOAD | |
2000 | | SEC_HAS_CONTENTS | |
2001 | | SEC_IN_MEMORY | |
2002 | | (info->pie ? 0 : SEC_READONLY) | |
2003 | | SEC_LINKER_CREATED)); | |
2004 | if (!fptr | |
2005 | || !bfd_set_section_alignment (abfd, fptr, 4)) | |
2006 | { | |
2007 | BFD_ASSERT (0); | |
2008 | return NULL; | |
2009 | } | |
2010 | ||
2011 | ia64_info->fptr_sec = fptr; | |
2012 | ||
2013 | if (info->pie) | |
2014 | { | |
2015 | asection *fptr_rel; | |
2016 | fptr_rel = bfd_make_section_with_flags (dynobj, ".rela.opd", | |
2017 | (SEC_ALLOC | SEC_LOAD | |
2018 | | SEC_HAS_CONTENTS | |
2019 | | SEC_IN_MEMORY | |
2020 | | SEC_LINKER_CREATED | |
2021 | | SEC_READONLY)); | |
2022 | if (fptr_rel == NULL | |
2023 | || !bfd_set_section_alignment (abfd, fptr_rel, | |
2024 | LOG_SECTION_ALIGN)) | |
2025 | { | |
2026 | BFD_ASSERT (0); | |
2027 | return NULL; | |
2028 | } | |
2029 | ||
2030 | ia64_info->rel_fptr_sec = fptr_rel; | |
2031 | } | |
2032 | } | |
2033 | ||
2034 | return fptr; | |
2035 | } | |
2036 | ||
2037 | static asection * | |
2038 | get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2039 | struct elfNN_ia64_link_hash_table *ia64_info) | |
2040 | { | |
2041 | asection *pltoff; | |
2042 | bfd *dynobj; | |
2043 | ||
2044 | pltoff = ia64_info->pltoff_sec; | |
2045 | if (!pltoff) | |
2046 | { | |
2047 | dynobj = ia64_info->root.dynobj; | |
2048 | if (!dynobj) | |
2049 | ia64_info->root.dynobj = dynobj = abfd; | |
2050 | ||
2051 | pltoff = bfd_make_section_with_flags (dynobj, | |
2052 | ELF_STRING_ia64_pltoff, | |
2053 | (SEC_ALLOC | |
2054 | | SEC_LOAD | |
2055 | | SEC_HAS_CONTENTS | |
2056 | | SEC_IN_MEMORY | |
2057 | | SEC_SMALL_DATA | |
2058 | | SEC_LINKER_CREATED)); | |
2059 | if (!pltoff | |
2060 | || !bfd_set_section_alignment (abfd, pltoff, 4)) | |
2061 | { | |
2062 | BFD_ASSERT (0); | |
2063 | return NULL; | |
2064 | } | |
2065 | ||
2066 | ia64_info->pltoff_sec = pltoff; | |
2067 | } | |
2068 | ||
2069 | return pltoff; | |
2070 | } | |
2071 | ||
2072 | static asection * | |
2073 | get_reloc_section (bfd *abfd, | |
2074 | struct elfNN_ia64_link_hash_table *ia64_info, | |
2075 | asection *sec, bfd_boolean create) | |
2076 | { | |
2077 | const char *srel_name; | |
2078 | asection *srel; | |
2079 | bfd *dynobj; | |
2080 | ||
2081 | srel_name = (bfd_elf_string_from_elf_section | |
2082 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
2083 | _bfd_elf_single_rel_hdr (sec)->sh_name)); | |
2084 | if (srel_name == NULL) | |
2085 | return NULL; | |
2086 | ||
2087 | dynobj = ia64_info->root.dynobj; | |
2088 | if (!dynobj) | |
2089 | ia64_info->root.dynobj = dynobj = abfd; | |
2090 | ||
2091 | srel = bfd_get_section_by_name (dynobj, srel_name); | |
2092 | if (srel == NULL && create) | |
2093 | { | |
2094 | srel = bfd_make_section_with_flags (dynobj, srel_name, | |
2095 | (SEC_ALLOC | SEC_LOAD | |
2096 | | SEC_HAS_CONTENTS | |
2097 | | SEC_IN_MEMORY | |
2098 | | SEC_LINKER_CREATED | |
2099 | | SEC_READONLY)); | |
2100 | if (srel == NULL | |
2101 | || !bfd_set_section_alignment (dynobj, srel, | |
2102 | LOG_SECTION_ALIGN)) | |
2103 | return NULL; | |
2104 | } | |
2105 | ||
2106 | return srel; | |
2107 | } | |
2108 | ||
2109 | static bfd_boolean | |
2110 | count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2111 | asection *srel, int type, bfd_boolean reltext) | |
2112 | { | |
2113 | struct elfNN_ia64_dyn_reloc_entry *rent; | |
2114 | ||
2115 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) | |
2116 | if (rent->srel == srel && rent->type == type) | |
2117 | break; | |
2118 | ||
2119 | if (!rent) | |
2120 | { | |
2121 | rent = ((struct elfNN_ia64_dyn_reloc_entry *) | |
2122 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent))); | |
2123 | if (!rent) | |
2124 | return FALSE; | |
2125 | ||
2126 | rent->next = dyn_i->reloc_entries; | |
2127 | rent->srel = srel; | |
2128 | rent->type = type; | |
2129 | rent->count = 0; | |
2130 | dyn_i->reloc_entries = rent; | |
2131 | } | |
23ebcd30 | 2132 | rent->reltext = reltext; |
cbe79dfe TG |
2133 | rent->count++; |
2134 | ||
2135 | return TRUE; | |
2136 | } | |
2137 | ||
2138 | static bfd_boolean | |
2139 | elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
2140 | asection *sec, | |
2141 | const Elf_Internal_Rela *relocs) | |
2142 | { | |
2143 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2144 | const Elf_Internal_Rela *relend; | |
2145 | Elf_Internal_Shdr *symtab_hdr; | |
2146 | const Elf_Internal_Rela *rel; | |
2147 | asection *got, *fptr, *srel, *pltoff; | |
2148 | enum { | |
2149 | NEED_GOT = 1, | |
2150 | NEED_GOTX = 2, | |
2151 | NEED_FPTR = 4, | |
2152 | NEED_PLTOFF = 8, | |
2153 | NEED_MIN_PLT = 16, | |
2154 | NEED_FULL_PLT = 32, | |
2155 | NEED_DYNREL = 64, | |
2156 | NEED_LTOFF_FPTR = 128, | |
2157 | NEED_TPREL = 256, | |
2158 | NEED_DTPMOD = 512, | |
2159 | NEED_DTPREL = 1024 | |
2160 | }; | |
2161 | int need_entry; | |
2162 | struct elf_link_hash_entry *h; | |
2163 | unsigned long r_symndx; | |
2164 | bfd_boolean maybe_dynamic; | |
2165 | ||
2166 | if (info->relocatable) | |
2167 | return TRUE; | |
2168 | ||
2169 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2170 | ia64_info = elfNN_ia64_hash_table (info); | |
2171 | if (ia64_info == NULL) | |
2172 | return FALSE; | |
2173 | ||
2174 | got = fptr = srel = pltoff = NULL; | |
2175 | ||
2176 | relend = relocs + sec->reloc_count; | |
2177 | ||
2178 | /* We scan relocations first to create dynamic relocation arrays. We | |
2179 | modified get_dyn_sym_info to allow fast insertion and support fast | |
2180 | lookup in the next loop. */ | |
2181 | for (rel = relocs; rel < relend; ++rel) | |
2182 | { | |
2183 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
2184 | if (r_symndx >= symtab_hdr->sh_info) | |
2185 | { | |
2186 | long indx = r_symndx - symtab_hdr->sh_info; | |
2187 | h = elf_sym_hashes (abfd)[indx]; | |
2188 | while (h->root.type == bfd_link_hash_indirect | |
2189 | || h->root.type == bfd_link_hash_warning) | |
2190 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2191 | } | |
2192 | else | |
2193 | h = NULL; | |
2194 | ||
2195 | /* We can only get preliminary data on whether a symbol is | |
2196 | locally or externally defined, as not all of the input files | |
2197 | have yet been processed. Do something with what we know, as | |
2198 | this may help reduce memory usage and processing time later. */ | |
2199 | maybe_dynamic = (h && ((!info->executable | |
2200 | && (!SYMBOLIC_BIND (info, h) | |
2201 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
2202 | || !h->def_regular | |
2203 | || h->root.type == bfd_link_hash_defweak)); | |
2204 | ||
2205 | need_entry = 0; | |
2206 | switch (ELFNN_R_TYPE (rel->r_info)) | |
2207 | { | |
2208 | case R_IA64_TPREL64MSB: | |
2209 | case R_IA64_TPREL64LSB: | |
2210 | if (info->shared || maybe_dynamic) | |
2211 | need_entry = NEED_DYNREL; | |
2212 | break; | |
2213 | ||
2214 | case R_IA64_LTOFF_TPREL22: | |
2215 | need_entry = NEED_TPREL; | |
2216 | if (info->shared) | |
2217 | info->flags |= DF_STATIC_TLS; | |
2218 | break; | |
2219 | ||
2220 | case R_IA64_DTPREL32MSB: | |
2221 | case R_IA64_DTPREL32LSB: | |
2222 | case R_IA64_DTPREL64MSB: | |
2223 | case R_IA64_DTPREL64LSB: | |
2224 | if (info->shared || maybe_dynamic) | |
2225 | need_entry = NEED_DYNREL; | |
2226 | break; | |
2227 | ||
2228 | case R_IA64_LTOFF_DTPREL22: | |
2229 | need_entry = NEED_DTPREL; | |
2230 | break; | |
2231 | ||
2232 | case R_IA64_DTPMOD64MSB: | |
2233 | case R_IA64_DTPMOD64LSB: | |
2234 | if (info->shared || maybe_dynamic) | |
2235 | need_entry = NEED_DYNREL; | |
2236 | break; | |
2237 | ||
2238 | case R_IA64_LTOFF_DTPMOD22: | |
2239 | need_entry = NEED_DTPMOD; | |
2240 | break; | |
2241 | ||
2242 | case R_IA64_LTOFF_FPTR22: | |
2243 | case R_IA64_LTOFF_FPTR64I: | |
2244 | case R_IA64_LTOFF_FPTR32MSB: | |
2245 | case R_IA64_LTOFF_FPTR32LSB: | |
2246 | case R_IA64_LTOFF_FPTR64MSB: | |
2247 | case R_IA64_LTOFF_FPTR64LSB: | |
2248 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; | |
2249 | break; | |
2250 | ||
2251 | case R_IA64_FPTR64I: | |
2252 | case R_IA64_FPTR32MSB: | |
2253 | case R_IA64_FPTR32LSB: | |
2254 | case R_IA64_FPTR64MSB: | |
2255 | case R_IA64_FPTR64LSB: | |
2256 | if (info->shared || h) | |
2257 | need_entry = NEED_FPTR | NEED_DYNREL; | |
2258 | else | |
2259 | need_entry = NEED_FPTR; | |
2260 | break; | |
2261 | ||
2262 | case R_IA64_LTOFF22: | |
2263 | case R_IA64_LTOFF64I: | |
2264 | need_entry = NEED_GOT; | |
2265 | break; | |
2266 | ||
2267 | case R_IA64_LTOFF22X: | |
2268 | need_entry = NEED_GOTX; | |
2269 | break; | |
2270 | ||
2271 | case R_IA64_PLTOFF22: | |
2272 | case R_IA64_PLTOFF64I: | |
2273 | case R_IA64_PLTOFF64MSB: | |
2274 | case R_IA64_PLTOFF64LSB: | |
2275 | need_entry = NEED_PLTOFF; | |
2276 | if (h) | |
2277 | { | |
2278 | if (maybe_dynamic) | |
2279 | need_entry |= NEED_MIN_PLT; | |
2280 | } | |
2281 | else | |
2282 | { | |
2283 | (*info->callbacks->warning) | |
2284 | (info, _("@pltoff reloc against local symbol"), 0, | |
2285 | abfd, 0, (bfd_vma) 0); | |
2286 | } | |
2287 | break; | |
2288 | ||
2289 | case R_IA64_PCREL21B: | |
2290 | case R_IA64_PCREL60B: | |
2291 | /* Depending on where this symbol is defined, we may or may not | |
2292 | need a full plt entry. Only skip if we know we'll not need | |
2293 | the entry -- static or symbolic, and the symbol definition | |
2294 | has already been seen. */ | |
2295 | if (maybe_dynamic && rel->r_addend == 0) | |
2296 | need_entry = NEED_FULL_PLT; | |
2297 | break; | |
2298 | ||
2299 | case R_IA64_IMM14: | |
2300 | case R_IA64_IMM22: | |
2301 | case R_IA64_IMM64: | |
2302 | case R_IA64_DIR32MSB: | |
2303 | case R_IA64_DIR32LSB: | |
2304 | case R_IA64_DIR64MSB: | |
2305 | case R_IA64_DIR64LSB: | |
2306 | /* Shared objects will always need at least a REL relocation. */ | |
2307 | if (info->shared || maybe_dynamic) | |
2308 | need_entry = NEED_DYNREL; | |
2309 | break; | |
2310 | ||
2311 | case R_IA64_IPLTMSB: | |
2312 | case R_IA64_IPLTLSB: | |
2313 | /* Shared objects will always need at least a REL relocation. */ | |
2314 | if (info->shared || maybe_dynamic) | |
2315 | need_entry = NEED_DYNREL; | |
2316 | break; | |
2317 | ||
2318 | case R_IA64_PCREL22: | |
2319 | case R_IA64_PCREL64I: | |
2320 | case R_IA64_PCREL32MSB: | |
2321 | case R_IA64_PCREL32LSB: | |
2322 | case R_IA64_PCREL64MSB: | |
2323 | case R_IA64_PCREL64LSB: | |
2324 | if (maybe_dynamic) | |
2325 | need_entry = NEED_DYNREL; | |
2326 | break; | |
2327 | } | |
2328 | ||
2329 | if (!need_entry) | |
2330 | continue; | |
2331 | ||
2332 | if ((need_entry & NEED_FPTR) != 0 | |
2333 | && rel->r_addend) | |
2334 | { | |
2335 | (*info->callbacks->warning) | |
2336 | (info, _("non-zero addend in @fptr reloc"), 0, | |
2337 | abfd, 0, (bfd_vma) 0); | |
2338 | } | |
2339 | ||
2340 | if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL) | |
2341 | return FALSE; | |
2342 | } | |
2343 | ||
2344 | /* Now, we only do lookup without insertion, which is very fast | |
2345 | with the modified get_dyn_sym_info. */ | |
2346 | for (rel = relocs; rel < relend; ++rel) | |
2347 | { | |
2348 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
2349 | int dynrel_type = R_IA64_NONE; | |
2350 | ||
2351 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
2352 | if (r_symndx >= symtab_hdr->sh_info) | |
2353 | { | |
2354 | /* We're dealing with a global symbol -- find its hash entry | |
2355 | and mark it as being referenced. */ | |
2356 | long indx = r_symndx - symtab_hdr->sh_info; | |
2357 | h = elf_sym_hashes (abfd)[indx]; | |
2358 | while (h->root.type == bfd_link_hash_indirect | |
2359 | || h->root.type == bfd_link_hash_warning) | |
2360 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2361 | ||
2362 | h->ref_regular = 1; | |
2363 | } | |
2364 | else | |
2365 | h = NULL; | |
2366 | ||
2367 | /* We can only get preliminary data on whether a symbol is | |
2368 | locally or externally defined, as not all of the input files | |
2369 | have yet been processed. Do something with what we know, as | |
2370 | this may help reduce memory usage and processing time later. */ | |
2371 | maybe_dynamic = (h && ((!info->executable | |
2372 | && (!SYMBOLIC_BIND (info, h) | |
2373 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
2374 | || !h->def_regular | |
2375 | || h->root.type == bfd_link_hash_defweak)); | |
2376 | ||
2377 | need_entry = 0; | |
2378 | switch (ELFNN_R_TYPE (rel->r_info)) | |
2379 | { | |
2380 | case R_IA64_TPREL64MSB: | |
2381 | case R_IA64_TPREL64LSB: | |
2382 | if (info->shared || maybe_dynamic) | |
2383 | need_entry = NEED_DYNREL; | |
2384 | dynrel_type = R_IA64_TPREL64LSB; | |
2385 | if (info->shared) | |
2386 | info->flags |= DF_STATIC_TLS; | |
2387 | break; | |
2388 | ||
2389 | case R_IA64_LTOFF_TPREL22: | |
2390 | need_entry = NEED_TPREL; | |
2391 | if (info->shared) | |
2392 | info->flags |= DF_STATIC_TLS; | |
2393 | break; | |
2394 | ||
2395 | case R_IA64_DTPREL32MSB: | |
2396 | case R_IA64_DTPREL32LSB: | |
2397 | case R_IA64_DTPREL64MSB: | |
2398 | case R_IA64_DTPREL64LSB: | |
2399 | if (info->shared || maybe_dynamic) | |
2400 | need_entry = NEED_DYNREL; | |
2401 | dynrel_type = R_IA64_DTPRELNNLSB; | |
2402 | break; | |
2403 | ||
2404 | case R_IA64_LTOFF_DTPREL22: | |
2405 | need_entry = NEED_DTPREL; | |
2406 | break; | |
2407 | ||
2408 | case R_IA64_DTPMOD64MSB: | |
2409 | case R_IA64_DTPMOD64LSB: | |
2410 | if (info->shared || maybe_dynamic) | |
2411 | need_entry = NEED_DYNREL; | |
2412 | dynrel_type = R_IA64_DTPMOD64LSB; | |
2413 | break; | |
2414 | ||
2415 | case R_IA64_LTOFF_DTPMOD22: | |
2416 | need_entry = NEED_DTPMOD; | |
2417 | break; | |
2418 | ||
2419 | case R_IA64_LTOFF_FPTR22: | |
2420 | case R_IA64_LTOFF_FPTR64I: | |
2421 | case R_IA64_LTOFF_FPTR32MSB: | |
2422 | case R_IA64_LTOFF_FPTR32LSB: | |
2423 | case R_IA64_LTOFF_FPTR64MSB: | |
2424 | case R_IA64_LTOFF_FPTR64LSB: | |
2425 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; | |
2426 | break; | |
2427 | ||
2428 | case R_IA64_FPTR64I: | |
2429 | case R_IA64_FPTR32MSB: | |
2430 | case R_IA64_FPTR32LSB: | |
2431 | case R_IA64_FPTR64MSB: | |
2432 | case R_IA64_FPTR64LSB: | |
2433 | if (info->shared || h) | |
2434 | need_entry = NEED_FPTR | NEED_DYNREL; | |
2435 | else | |
2436 | need_entry = NEED_FPTR; | |
2437 | dynrel_type = R_IA64_FPTRNNLSB; | |
2438 | break; | |
2439 | ||
2440 | case R_IA64_LTOFF22: | |
2441 | case R_IA64_LTOFF64I: | |
2442 | need_entry = NEED_GOT; | |
2443 | break; | |
2444 | ||
2445 | case R_IA64_LTOFF22X: | |
2446 | need_entry = NEED_GOTX; | |
2447 | break; | |
2448 | ||
2449 | case R_IA64_PLTOFF22: | |
2450 | case R_IA64_PLTOFF64I: | |
2451 | case R_IA64_PLTOFF64MSB: | |
2452 | case R_IA64_PLTOFF64LSB: | |
2453 | need_entry = NEED_PLTOFF; | |
2454 | if (h) | |
2455 | { | |
2456 | if (maybe_dynamic) | |
2457 | need_entry |= NEED_MIN_PLT; | |
2458 | } | |
2459 | break; | |
2460 | ||
2461 | case R_IA64_PCREL21B: | |
2462 | case R_IA64_PCREL60B: | |
2463 | /* Depending on where this symbol is defined, we may or may not | |
2464 | need a full plt entry. Only skip if we know we'll not need | |
2465 | the entry -- static or symbolic, and the symbol definition | |
2466 | has already been seen. */ | |
2467 | if (maybe_dynamic && rel->r_addend == 0) | |
2468 | need_entry = NEED_FULL_PLT; | |
2469 | break; | |
2470 | ||
2471 | case R_IA64_IMM14: | |
2472 | case R_IA64_IMM22: | |
2473 | case R_IA64_IMM64: | |
2474 | case R_IA64_DIR32MSB: | |
2475 | case R_IA64_DIR32LSB: | |
2476 | case R_IA64_DIR64MSB: | |
2477 | case R_IA64_DIR64LSB: | |
2478 | /* Shared objects will always need at least a REL relocation. */ | |
2479 | if (info->shared || maybe_dynamic) | |
2480 | need_entry = NEED_DYNREL; | |
2481 | dynrel_type = R_IA64_DIRNNLSB; | |
2482 | break; | |
2483 | ||
2484 | case R_IA64_IPLTMSB: | |
2485 | case R_IA64_IPLTLSB: | |
2486 | /* Shared objects will always need at least a REL relocation. */ | |
2487 | if (info->shared || maybe_dynamic) | |
2488 | need_entry = NEED_DYNREL; | |
2489 | dynrel_type = R_IA64_IPLTLSB; | |
2490 | break; | |
2491 | ||
2492 | case R_IA64_PCREL22: | |
2493 | case R_IA64_PCREL64I: | |
2494 | case R_IA64_PCREL32MSB: | |
2495 | case R_IA64_PCREL32LSB: | |
2496 | case R_IA64_PCREL64MSB: | |
2497 | case R_IA64_PCREL64LSB: | |
2498 | if (maybe_dynamic) | |
2499 | need_entry = NEED_DYNREL; | |
2500 | dynrel_type = R_IA64_PCRELNNLSB; | |
2501 | break; | |
2502 | } | |
2503 | ||
2504 | if (!need_entry) | |
2505 | continue; | |
2506 | ||
2507 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE); | |
2508 | ||
2509 | /* Record whether or not this is a local symbol. */ | |
2510 | dyn_i->h = h; | |
2511 | ||
2512 | /* Create what's needed. */ | |
2513 | if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL | |
2514 | | NEED_DTPMOD | NEED_DTPREL)) | |
2515 | { | |
2516 | if (!got) | |
2517 | { | |
2518 | got = get_got (abfd, info, ia64_info); | |
2519 | if (!got) | |
2520 | return FALSE; | |
2521 | } | |
2522 | if (need_entry & NEED_GOT) | |
2523 | dyn_i->want_got = 1; | |
2524 | if (need_entry & NEED_GOTX) | |
2525 | dyn_i->want_gotx = 1; | |
2526 | if (need_entry & NEED_TPREL) | |
2527 | dyn_i->want_tprel = 1; | |
2528 | if (need_entry & NEED_DTPMOD) | |
2529 | dyn_i->want_dtpmod = 1; | |
2530 | if (need_entry & NEED_DTPREL) | |
2531 | dyn_i->want_dtprel = 1; | |
2532 | } | |
2533 | if (need_entry & NEED_FPTR) | |
2534 | { | |
2535 | if (!fptr) | |
2536 | { | |
2537 | fptr = get_fptr (abfd, info, ia64_info); | |
2538 | if (!fptr) | |
2539 | return FALSE; | |
2540 | } | |
2541 | ||
2542 | /* FPTRs for shared libraries are allocated by the dynamic | |
2543 | linker. Make sure this local symbol will appear in the | |
2544 | dynamic symbol table. */ | |
2545 | if (!h && info->shared) | |
2546 | { | |
2547 | if (! (bfd_elf_link_record_local_dynamic_symbol | |
2548 | (info, abfd, (long) r_symndx))) | |
2549 | return FALSE; | |
2550 | } | |
2551 | ||
2552 | dyn_i->want_fptr = 1; | |
2553 | } | |
2554 | if (need_entry & NEED_LTOFF_FPTR) | |
2555 | dyn_i->want_ltoff_fptr = 1; | |
2556 | if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT)) | |
2557 | { | |
2558 | if (!ia64_info->root.dynobj) | |
2559 | ia64_info->root.dynobj = abfd; | |
2560 | h->needs_plt = 1; | |
2561 | dyn_i->want_plt = 1; | |
2562 | } | |
2563 | if (need_entry & NEED_FULL_PLT) | |
2564 | dyn_i->want_plt2 = 1; | |
2565 | if (need_entry & NEED_PLTOFF) | |
2566 | { | |
2567 | /* This is needed here, in case @pltoff is used in a non-shared | |
2568 | link. */ | |
2569 | if (!pltoff) | |
2570 | { | |
2571 | pltoff = get_pltoff (abfd, info, ia64_info); | |
2572 | if (!pltoff) | |
2573 | return FALSE; | |
2574 | } | |
2575 | ||
2576 | dyn_i->want_pltoff = 1; | |
2577 | } | |
2578 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) | |
2579 | { | |
2580 | if (!srel) | |
2581 | { | |
2582 | srel = get_reloc_section (abfd, ia64_info, sec, TRUE); | |
2583 | if (!srel) | |
2584 | return FALSE; | |
2585 | } | |
2586 | if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type, | |
2587 | (sec->flags & SEC_READONLY) != 0)) | |
2588 | return FALSE; | |
2589 | } | |
2590 | } | |
2591 | ||
2592 | return TRUE; | |
2593 | } | |
2594 | ||
2595 | /* For cleanliness, and potentially faster dynamic loading, allocate | |
2596 | external GOT entries first. */ | |
2597 | ||
2598 | static bfd_boolean | |
2599 | allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2600 | void * data) | |
2601 | { | |
2602 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2603 | ||
2604 | if ((dyn_i->want_got || dyn_i->want_gotx) | |
2605 | && ! dyn_i->want_fptr | |
2606 | && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2607 | { | |
2608 | dyn_i->got_offset = x->ofs; | |
2609 | x->ofs += 8; | |
2610 | } | |
2611 | if (dyn_i->want_tprel) | |
2612 | { | |
2613 | dyn_i->tprel_offset = x->ofs; | |
2614 | x->ofs += 8; | |
2615 | } | |
2616 | if (dyn_i->want_dtpmod) | |
2617 | { | |
2618 | if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2619 | { | |
2620 | dyn_i->dtpmod_offset = x->ofs; | |
2621 | x->ofs += 8; | |
2622 | } | |
2623 | else | |
2624 | { | |
2625 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2626 | ||
2627 | ia64_info = elfNN_ia64_hash_table (x->info); | |
2628 | if (ia64_info == NULL) | |
2629 | return FALSE; | |
2630 | ||
2631 | if (ia64_info->self_dtpmod_offset == (bfd_vma) -1) | |
2632 | { | |
2633 | ia64_info->self_dtpmod_offset = x->ofs; | |
2634 | x->ofs += 8; | |
2635 | } | |
2636 | dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset; | |
2637 | } | |
2638 | } | |
2639 | if (dyn_i->want_dtprel) | |
2640 | { | |
2641 | dyn_i->dtprel_offset = x->ofs; | |
2642 | x->ofs += 8; | |
2643 | } | |
2644 | return TRUE; | |
2645 | } | |
2646 | ||
2647 | /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */ | |
2648 | ||
2649 | static bfd_boolean | |
2650 | allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2651 | void * data) | |
2652 | { | |
2653 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2654 | ||
2655 | if (dyn_i->want_got | |
2656 | && dyn_i->want_fptr | |
2657 | && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB)) | |
2658 | { | |
2659 | dyn_i->got_offset = x->ofs; | |
2660 | x->ofs += 8; | |
2661 | } | |
2662 | return TRUE; | |
2663 | } | |
2664 | ||
2665 | /* Lastly, allocate all the GOT entries for local data. */ | |
2666 | ||
2667 | static bfd_boolean | |
2668 | allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2669 | PTR data) | |
2670 | { | |
2671 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2672 | ||
2673 | if ((dyn_i->want_got || dyn_i->want_gotx) | |
2674 | && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2675 | { | |
2676 | dyn_i->got_offset = x->ofs; | |
2677 | x->ofs += 8; | |
2678 | } | |
2679 | return TRUE; | |
2680 | } | |
2681 | ||
2682 | /* Search for the index of a global symbol in it's defining object file. */ | |
2683 | ||
2684 | static long | |
2685 | global_sym_index (struct elf_link_hash_entry *h) | |
2686 | { | |
2687 | struct elf_link_hash_entry **p; | |
2688 | bfd *obj; | |
2689 | ||
2690 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
2691 | || h->root.type == bfd_link_hash_defweak); | |
2692 | ||
2693 | obj = h->root.u.def.section->owner; | |
2694 | for (p = elf_sym_hashes (obj); *p != h; ++p) | |
2695 | continue; | |
2696 | ||
2697 | return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info; | |
2698 | } | |
2699 | ||
2700 | /* Allocate function descriptors. We can do these for every function | |
2701 | in a main executable that is not exported. */ | |
2702 | ||
2703 | static bfd_boolean | |
2704 | allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data) | |
2705 | { | |
2706 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2707 | ||
2708 | if (dyn_i->want_fptr) | |
2709 | { | |
2710 | struct elf_link_hash_entry *h = dyn_i->h; | |
2711 | ||
2712 | if (h) | |
2713 | while (h->root.type == bfd_link_hash_indirect | |
2714 | || h->root.type == bfd_link_hash_warning) | |
2715 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2716 | ||
2717 | if (!x->info->executable | |
2718 | && (!h | |
2719 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2720 | || (h->root.type != bfd_link_hash_undefweak | |
2721 | && h->root.type != bfd_link_hash_undefined))) | |
2722 | { | |
2723 | if (h && h->dynindx == -1) | |
2724 | { | |
2725 | BFD_ASSERT ((h->root.type == bfd_link_hash_defined) | |
2726 | || (h->root.type == bfd_link_hash_defweak)); | |
2727 | ||
2728 | if (!bfd_elf_link_record_local_dynamic_symbol | |
2729 | (x->info, h->root.u.def.section->owner, | |
2730 | global_sym_index (h))) | |
2731 | return FALSE; | |
2732 | } | |
2733 | ||
2734 | dyn_i->want_fptr = 0; | |
2735 | } | |
2736 | else if (h == NULL || h->dynindx == -1) | |
2737 | { | |
2738 | dyn_i->fptr_offset = x->ofs; | |
2739 | x->ofs += 16; | |
2740 | } | |
2741 | else | |
2742 | dyn_i->want_fptr = 0; | |
2743 | } | |
2744 | return TRUE; | |
2745 | } | |
2746 | ||
2747 | /* Allocate all the minimal PLT entries. */ | |
2748 | ||
2749 | static bfd_boolean | |
2750 | allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2751 | PTR data) | |
2752 | { | |
2753 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2754 | ||
2755 | if (dyn_i->want_plt) | |
2756 | { | |
2757 | struct elf_link_hash_entry *h = dyn_i->h; | |
2758 | ||
2759 | if (h) | |
2760 | while (h->root.type == bfd_link_hash_indirect | |
2761 | || h->root.type == bfd_link_hash_warning) | |
2762 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2763 | ||
2764 | /* ??? Versioned symbols seem to lose NEEDS_PLT. */ | |
2765 | if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0)) | |
2766 | { | |
2767 | bfd_size_type offset = x->ofs; | |
2768 | if (offset == 0) | |
2769 | offset = PLT_HEADER_SIZE; | |
2770 | dyn_i->plt_offset = offset; | |
2771 | x->ofs = offset + PLT_MIN_ENTRY_SIZE; | |
2772 | ||
2773 | dyn_i->want_pltoff = 1; | |
2774 | } | |
2775 | else | |
2776 | { | |
2777 | dyn_i->want_plt = 0; | |
2778 | dyn_i->want_plt2 = 0; | |
2779 | } | |
2780 | } | |
2781 | return TRUE; | |
2782 | } | |
2783 | ||
2784 | /* Allocate all the full PLT entries. */ | |
2785 | ||
2786 | static bfd_boolean | |
2787 | allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2788 | PTR data) | |
2789 | { | |
2790 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2791 | ||
2792 | if (dyn_i->want_plt2) | |
2793 | { | |
2794 | struct elf_link_hash_entry *h = dyn_i->h; | |
2795 | bfd_size_type ofs = x->ofs; | |
2796 | ||
2797 | dyn_i->plt2_offset = ofs; | |
2798 | x->ofs = ofs + PLT_FULL_ENTRY_SIZE; | |
2799 | ||
2800 | while (h->root.type == bfd_link_hash_indirect | |
2801 | || h->root.type == bfd_link_hash_warning) | |
2802 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2803 | dyn_i->h->plt.offset = ofs; | |
2804 | } | |
2805 | return TRUE; | |
2806 | } | |
2807 | ||
2808 | /* Allocate all the PLTOFF entries requested by relocations and | |
2809 | plt entries. We can't share space with allocated FPTR entries, | |
2810 | because the latter are not necessarily addressable by the GP. | |
2811 | ??? Relaxation might be able to determine that they are. */ | |
2812 | ||
2813 | static bfd_boolean | |
2814 | allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2815 | PTR data) | |
2816 | { | |
2817 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2818 | ||
2819 | if (dyn_i->want_pltoff) | |
2820 | { | |
2821 | dyn_i->pltoff_offset = x->ofs; | |
2822 | x->ofs += 16; | |
2823 | } | |
2824 | return TRUE; | |
2825 | } | |
2826 | ||
2827 | /* Allocate dynamic relocations for those symbols that turned out | |
2828 | to be dynamic. */ | |
2829 | ||
2830 | static bfd_boolean | |
2831 | allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2832 | PTR data) | |
2833 | { | |
2834 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2835 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2836 | struct elfNN_ia64_dyn_reloc_entry *rent; | |
2837 | bfd_boolean dynamic_symbol, shared, resolved_zero; | |
2838 | ||
2839 | ia64_info = elfNN_ia64_hash_table (x->info); | |
2840 | if (ia64_info == NULL) | |
2841 | return FALSE; | |
2842 | ||
2843 | /* Note that this can't be used in relation to FPTR relocs below. */ | |
2844 | dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0); | |
2845 | ||
2846 | shared = x->info->shared; | |
2847 | resolved_zero = (dyn_i->h | |
2848 | && ELF_ST_VISIBILITY (dyn_i->h->other) | |
2849 | && dyn_i->h->root.type == bfd_link_hash_undefweak); | |
2850 | ||
2851 | /* Take care of the GOT and PLT relocations. */ | |
2852 | ||
2853 | if ((!resolved_zero | |
2854 | && (dynamic_symbol || shared) | |
2855 | && (dyn_i->want_got || dyn_i->want_gotx)) | |
2856 | || (dyn_i->want_ltoff_fptr | |
2857 | && dyn_i->h | |
2858 | && dyn_i->h->dynindx != -1)) | |
2859 | { | |
2860 | if (!dyn_i->want_ltoff_fptr | |
2861 | || !x->info->pie | |
2862 | || dyn_i->h == NULL | |
2863 | || dyn_i->h->root.type != bfd_link_hash_undefweak) | |
2864 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2865 | } | |
2866 | if ((dynamic_symbol || shared) && dyn_i->want_tprel) | |
2867 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2868 | if (dynamic_symbol && dyn_i->want_dtpmod) | |
2869 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2870 | if (dynamic_symbol && dyn_i->want_dtprel) | |
2871 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2872 | ||
2873 | if (x->only_got) | |
2874 | return TRUE; | |
2875 | ||
2876 | if (ia64_info->rel_fptr_sec && dyn_i->want_fptr) | |
2877 | { | |
2878 | if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak) | |
2879 | ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela); | |
2880 | } | |
2881 | ||
2882 | if (!resolved_zero && dyn_i->want_pltoff) | |
2883 | { | |
2884 | bfd_size_type t = 0; | |
2885 | ||
2886 | /* Dynamic symbols get one IPLT relocation. Local symbols in | |
2887 | shared libraries get two REL relocations. Local symbols in | |
2888 | main applications get nothing. */ | |
2889 | if (dynamic_symbol) | |
2890 | t = sizeof (ElfNN_External_Rela); | |
2891 | else if (shared) | |
2892 | t = 2 * sizeof (ElfNN_External_Rela); | |
2893 | ||
2894 | ia64_info->rel_pltoff_sec->size += t; | |
2895 | } | |
2896 | ||
2897 | /* Take care of the normal data relocations. */ | |
2898 | ||
2899 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) | |
2900 | { | |
2901 | int count = rent->count; | |
2902 | ||
2903 | switch (rent->type) | |
2904 | { | |
2905 | case R_IA64_FPTR32LSB: | |
2906 | case R_IA64_FPTR64LSB: | |
2907 | /* Allocate one iff !want_fptr and not PIE, which by this point | |
2908 | will be true only if we're actually allocating one statically | |
2909 | in the main executable. Position independent executables | |
2910 | need a relative reloc. */ | |
2911 | if (dyn_i->want_fptr && !x->info->pie) | |
2912 | continue; | |
2913 | break; | |
2914 | case R_IA64_PCREL32LSB: | |
2915 | case R_IA64_PCREL64LSB: | |
2916 | if (!dynamic_symbol) | |
2917 | continue; | |
2918 | break; | |
2919 | case R_IA64_DIR32LSB: | |
2920 | case R_IA64_DIR64LSB: | |
2921 | if (!dynamic_symbol && !shared) | |
2922 | continue; | |
2923 | break; | |
2924 | case R_IA64_IPLTLSB: | |
2925 | if (!dynamic_symbol && !shared) | |
2926 | continue; | |
2927 | /* Use two REL relocations for IPLT relocations | |
2928 | against local symbols. */ | |
2929 | if (!dynamic_symbol) | |
2930 | count *= 2; | |
2931 | break; | |
2932 | case R_IA64_DTPREL32LSB: | |
2933 | case R_IA64_TPREL64LSB: | |
2934 | case R_IA64_DTPREL64LSB: | |
2935 | case R_IA64_DTPMOD64LSB: | |
2936 | break; | |
2937 | default: | |
2938 | abort (); | |
2939 | } | |
2940 | if (rent->reltext) | |
2941 | ia64_info->reltext = 1; | |
2942 | rent->srel->size += sizeof (ElfNN_External_Rela) * count; | |
2943 | } | |
2944 | ||
2945 | return TRUE; | |
2946 | } | |
2947 | ||
2948 | static bfd_boolean | |
2949 | elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2950 | struct elf_link_hash_entry *h) | |
2951 | { | |
2952 | /* ??? Undefined symbols with PLT entries should be re-defined | |
2953 | to be the PLT entry. */ | |
2954 | ||
2955 | /* If this is a weak symbol, and there is a real definition, the | |
2956 | processor independent code will have arranged for us to see the | |
2957 | real definition first, and we can just use the same value. */ | |
2958 | if (h->u.weakdef != NULL) | |
2959 | { | |
2960 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
2961 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2962 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2963 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2964 | return TRUE; | |
2965 | } | |
2966 | ||
2967 | /* If this is a reference to a symbol defined by a dynamic object which | |
2968 | is not a function, we might allocate the symbol in our .dynbss section | |
2969 | and allocate a COPY dynamic relocation. | |
2970 | ||
2971 | But IA-64 code is canonically PIC, so as a rule we can avoid this sort | |
2972 | of hackery. */ | |
2973 | ||
2974 | return TRUE; | |
2975 | } | |
2976 | ||
2977 | static bfd_boolean | |
2978 | elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2979 | struct bfd_link_info *info) | |
2980 | { | |
2981 | struct elfNN_ia64_allocate_data data; | |
2982 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2983 | asection *sec; | |
2984 | bfd *dynobj; | |
2985 | bfd_boolean relplt = FALSE; | |
2986 | ||
2987 | dynobj = elf_hash_table(info)->dynobj; | |
2988 | ia64_info = elfNN_ia64_hash_table (info); | |
2989 | if (ia64_info == NULL) | |
2990 | return FALSE; | |
2991 | ia64_info->self_dtpmod_offset = (bfd_vma) -1; | |
2992 | BFD_ASSERT(dynobj != NULL); | |
2993 | data.info = info; | |
2994 | ||
2995 | /* Set the contents of the .interp section to the interpreter. */ | |
2996 | if (ia64_info->root.dynamic_sections_created | |
2997 | && info->executable) | |
2998 | { | |
2999 | sec = bfd_get_section_by_name (dynobj, ".interp"); | |
3000 | BFD_ASSERT (sec != NULL); | |
3001 | sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; | |
3002 | sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; | |
3003 | } | |
3004 | ||
3005 | /* Allocate the GOT entries. */ | |
3006 | ||
3007 | if (ia64_info->root.sgot) | |
3008 | { | |
3009 | data.ofs = 0; | |
3010 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); | |
3011 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); | |
3012 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); | |
3013 | ia64_info->root.sgot->size = data.ofs; | |
3014 | } | |
3015 | ||
3016 | /* Allocate the FPTR entries. */ | |
3017 | ||
3018 | if (ia64_info->fptr_sec) | |
3019 | { | |
3020 | data.ofs = 0; | |
3021 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data); | |
3022 | ia64_info->fptr_sec->size = data.ofs; | |
3023 | } | |
3024 | ||
3025 | /* Now that we've seen all of the input files, we can decide which | |
3026 | symbols need plt entries. Allocate the minimal PLT entries first. | |
3027 | We do this even though dynamic_sections_created may be FALSE, because | |
3028 | this has the side-effect of clearing want_plt and want_plt2. */ | |
3029 | ||
3030 | data.ofs = 0; | |
3031 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data); | |
3032 | ||
3033 | ia64_info->minplt_entries = 0; | |
3034 | if (data.ofs) | |
3035 | { | |
3036 | ia64_info->minplt_entries | |
3037 | = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; | |
3038 | } | |
3039 | ||
3040 | /* Align the pointer for the plt2 entries. */ | |
3041 | data.ofs = (data.ofs + 31) & (bfd_vma) -32; | |
3042 | ||
3043 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data); | |
3044 | if (data.ofs != 0 || ia64_info->root.dynamic_sections_created) | |
3045 | { | |
3046 | /* FIXME: we always reserve the memory for dynamic linker even if | |
3047 | there are no PLT entries since dynamic linker may assume the | |
3048 | reserved memory always exists. */ | |
3049 | ||
3050 | BFD_ASSERT (ia64_info->root.dynamic_sections_created); | |
3051 | ||
3052 | ia64_info->root.splt->size = data.ofs; | |
3053 | ||
3054 | /* If we've got a .plt, we need some extra memory for the dynamic | |
3055 | linker. We stuff these in .got.plt. */ | |
3056 | sec = bfd_get_section_by_name (dynobj, ".got.plt"); | |
3057 | sec->size = 8 * PLT_RESERVED_WORDS; | |
3058 | } | |
3059 | ||
3060 | /* Allocate the PLTOFF entries. */ | |
3061 | ||
3062 | if (ia64_info->pltoff_sec) | |
3063 | { | |
3064 | data.ofs = 0; | |
3065 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data); | |
3066 | ia64_info->pltoff_sec->size = data.ofs; | |
3067 | } | |
3068 | ||
3069 | if (ia64_info->root.dynamic_sections_created) | |
3070 | { | |
3071 | /* Allocate space for the dynamic relocations that turned out to be | |
3072 | required. */ | |
3073 | ||
3074 | if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1) | |
3075 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
3076 | data.only_got = FALSE; | |
3077 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data); | |
3078 | } | |
3079 | ||
3080 | /* We have now determined the sizes of the various dynamic sections. | |
3081 | Allocate memory for them. */ | |
3082 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) | |
3083 | { | |
3084 | bfd_boolean strip; | |
3085 | ||
3086 | if (!(sec->flags & SEC_LINKER_CREATED)) | |
3087 | continue; | |
3088 | ||
3089 | /* If we don't need this section, strip it from the output file. | |
3090 | There were several sections primarily related to dynamic | |
3091 | linking that must be create before the linker maps input | |
3092 | sections to output sections. The linker does that before | |
3093 | bfd_elf_size_dynamic_sections is called, and it is that | |
3094 | function which decides whether anything needs to go into | |
3095 | these sections. */ | |
3096 | ||
3097 | strip = (sec->size == 0); | |
3098 | ||
3099 | if (sec == ia64_info->root.sgot) | |
3100 | strip = FALSE; | |
3101 | else if (sec == ia64_info->root.srelgot) | |
3102 | { | |
3103 | if (strip) | |
3104 | ia64_info->root.srelgot = NULL; | |
3105 | else | |
3106 | /* We use the reloc_count field as a counter if we need to | |
3107 | copy relocs into the output file. */ | |
3108 | sec->reloc_count = 0; | |
3109 | } | |
3110 | else if (sec == ia64_info->fptr_sec) | |
3111 | { | |
3112 | if (strip) | |
3113 | ia64_info->fptr_sec = NULL; | |
3114 | } | |
3115 | else if (sec == ia64_info->rel_fptr_sec) | |
3116 | { | |
3117 | if (strip) | |
3118 | ia64_info->rel_fptr_sec = NULL; | |
3119 | else | |
3120 | /* We use the reloc_count field as a counter if we need to | |
3121 | copy relocs into the output file. */ | |
3122 | sec->reloc_count = 0; | |
3123 | } | |
3124 | else if (sec == ia64_info->root.splt) | |
3125 | { | |
3126 | if (strip) | |
3127 | ia64_info->root.splt = NULL; | |
3128 | } | |
3129 | else if (sec == ia64_info->pltoff_sec) | |
3130 | { | |
3131 | if (strip) | |
3132 | ia64_info->pltoff_sec = NULL; | |
3133 | } | |
3134 | else if (sec == ia64_info->rel_pltoff_sec) | |
3135 | { | |
3136 | if (strip) | |
3137 | ia64_info->rel_pltoff_sec = NULL; | |
3138 | else | |
3139 | { | |
3140 | relplt = TRUE; | |
3141 | /* We use the reloc_count field as a counter if we need to | |
3142 | copy relocs into the output file. */ | |
3143 | sec->reloc_count = 0; | |
3144 | } | |
3145 | } | |
3146 | else | |
3147 | { | |
3148 | const char *name; | |
3149 | ||
3150 | /* It's OK to base decisions on the section name, because none | |
3151 | of the dynobj section names depend upon the input files. */ | |
3152 | name = bfd_get_section_name (dynobj, sec); | |
3153 | ||
3154 | if (strcmp (name, ".got.plt") == 0) | |
3155 | strip = FALSE; | |
3156 | else if (CONST_STRNEQ (name, ".rel")) | |
3157 | { | |
3158 | if (!strip) | |
3159 | { | |
3160 | /* We use the reloc_count field as a counter if we need to | |
3161 | copy relocs into the output file. */ | |
3162 | sec->reloc_count = 0; | |
3163 | } | |
3164 | } | |
3165 | else | |
3166 | continue; | |
3167 | } | |
3168 | ||
3169 | if (strip) | |
3170 | sec->flags |= SEC_EXCLUDE; | |
3171 | else | |
3172 | { | |
3173 | /* Allocate memory for the section contents. */ | |
3174 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); | |
3175 | if (sec->contents == NULL && sec->size != 0) | |
3176 | return FALSE; | |
3177 | } | |
3178 | } | |
3179 | ||
3180 | if (elf_hash_table (info)->dynamic_sections_created) | |
3181 | { | |
3182 | /* Add some entries to the .dynamic section. We fill in the values | |
3183 | later (in finish_dynamic_sections) but we must add the entries now | |
3184 | so that we get the correct size for the .dynamic section. */ | |
3185 | ||
3186 | if (info->executable) | |
3187 | { | |
3188 | /* The DT_DEBUG entry is filled in by the dynamic linker and used | |
3189 | by the debugger. */ | |
3190 | #define add_dynamic_entry(TAG, VAL) \ | |
3191 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3192 | ||
3193 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
3194 | return FALSE; | |
3195 | } | |
3196 | ||
3197 | if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0)) | |
3198 | return FALSE; | |
3199 | if (!add_dynamic_entry (DT_PLTGOT, 0)) | |
3200 | return FALSE; | |
3201 | ||
3202 | if (relplt) | |
3203 | { | |
3204 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) | |
3205 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3206 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
3207 | return FALSE; | |
3208 | } | |
3209 | ||
3210 | if (!add_dynamic_entry (DT_RELA, 0) | |
3211 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3212 | || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela))) | |
3213 | return FALSE; | |
3214 | ||
3215 | if (ia64_info->reltext) | |
3216 | { | |
3217 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
3218 | return FALSE; | |
3219 | info->flags |= DF_TEXTREL; | |
3220 | } | |
3221 | } | |
3222 | ||
3223 | /* ??? Perhaps force __gp local. */ | |
3224 | ||
3225 | return TRUE; | |
3226 | } | |
3227 | ||
3228 | static void | |
3229 | elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info, | |
3230 | asection *sec, asection *srel, | |
3231 | bfd_vma offset, unsigned int type, | |
3232 | long dynindx, bfd_vma addend) | |
3233 | { | |
3234 | Elf_Internal_Rela outrel; | |
3235 | bfd_byte *loc; | |
3236 | ||
3237 | BFD_ASSERT (dynindx != -1); | |
3238 | outrel.r_info = ELFNN_R_INFO (dynindx, type); | |
3239 | outrel.r_addend = addend; | |
3240 | outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
3241 | if (outrel.r_offset >= (bfd_vma) -2) | |
3242 | { | |
3243 | /* Run for the hills. We shouldn't be outputting a relocation | |
3244 | for this. So do what everyone else does and output a no-op. */ | |
3245 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
3246 | outrel.r_addend = 0; | |
3247 | outrel.r_offset = 0; | |
3248 | } | |
3249 | else | |
3250 | outrel.r_offset += sec->output_section->vma + sec->output_offset; | |
3251 | ||
3252 | loc = srel->contents; | |
3253 | loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela); | |
3254 | bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); | |
3255 | BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size); | |
3256 | } | |
3257 | ||
3258 | /* Store an entry for target address TARGET_ADDR in the linkage table | |
3259 | and return the gp-relative address of the linkage table entry. */ | |
3260 | ||
3261 | static bfd_vma | |
3262 | set_got_entry (bfd *abfd, struct bfd_link_info *info, | |
3263 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3264 | long dynindx, bfd_vma addend, bfd_vma value, | |
3265 | unsigned int dyn_r_type) | |
3266 | { | |
3267 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3268 | asection *got_sec; | |
3269 | bfd_boolean done; | |
3270 | bfd_vma got_offset; | |
3271 | ||
3272 | ia64_info = elfNN_ia64_hash_table (info); | |
3273 | if (ia64_info == NULL) | |
3274 | return 0; | |
3275 | ||
3276 | got_sec = ia64_info->root.sgot; | |
3277 | ||
3278 | switch (dyn_r_type) | |
3279 | { | |
3280 | case R_IA64_TPREL64LSB: | |
3281 | done = dyn_i->tprel_done; | |
3282 | dyn_i->tprel_done = TRUE; | |
3283 | got_offset = dyn_i->tprel_offset; | |
3284 | break; | |
3285 | case R_IA64_DTPMOD64LSB: | |
3286 | if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset) | |
3287 | { | |
3288 | done = dyn_i->dtpmod_done; | |
3289 | dyn_i->dtpmod_done = TRUE; | |
3290 | } | |
3291 | else | |
3292 | { | |
3293 | done = ia64_info->self_dtpmod_done; | |
3294 | ia64_info->self_dtpmod_done = TRUE; | |
3295 | dynindx = 0; | |
3296 | } | |
3297 | got_offset = dyn_i->dtpmod_offset; | |
3298 | break; | |
3299 | case R_IA64_DTPREL32LSB: | |
3300 | case R_IA64_DTPREL64LSB: | |
3301 | done = dyn_i->dtprel_done; | |
3302 | dyn_i->dtprel_done = TRUE; | |
3303 | got_offset = dyn_i->dtprel_offset; | |
3304 | break; | |
3305 | default: | |
3306 | done = dyn_i->got_done; | |
3307 | dyn_i->got_done = TRUE; | |
3308 | got_offset = dyn_i->got_offset; | |
3309 | break; | |
3310 | } | |
3311 | ||
3312 | BFD_ASSERT ((got_offset & 7) == 0); | |
3313 | ||
3314 | if (! done) | |
3315 | { | |
3316 | /* Store the target address in the linkage table entry. */ | |
3317 | bfd_put_64 (abfd, value, got_sec->contents + got_offset); | |
3318 | ||
3319 | /* Install a dynamic relocation if needed. */ | |
3320 | if (((info->shared | |
3321 | && (!dyn_i->h | |
3322 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT | |
3323 | || dyn_i->h->root.type != bfd_link_hash_undefweak) | |
3324 | && dyn_r_type != R_IA64_DTPREL32LSB | |
3325 | && dyn_r_type != R_IA64_DTPREL64LSB) | |
3326 | || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type) | |
3327 | || (dynindx != -1 | |
3328 | && (dyn_r_type == R_IA64_FPTR32LSB | |
3329 | || dyn_r_type == R_IA64_FPTR64LSB))) | |
3330 | && (!dyn_i->want_ltoff_fptr | |
3331 | || !info->pie | |
3332 | || !dyn_i->h | |
3333 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) | |
3334 | { | |
3335 | if (dynindx == -1 | |
3336 | && dyn_r_type != R_IA64_TPREL64LSB | |
3337 | && dyn_r_type != R_IA64_DTPMOD64LSB | |
3338 | && dyn_r_type != R_IA64_DTPREL32LSB | |
3339 | && dyn_r_type != R_IA64_DTPREL64LSB) | |
3340 | { | |
3341 | dyn_r_type = R_IA64_RELNNLSB; | |
3342 | dynindx = 0; | |
3343 | addend = value; | |
3344 | } | |
3345 | ||
3346 | if (bfd_big_endian (abfd)) | |
3347 | { | |
3348 | switch (dyn_r_type) | |
3349 | { | |
3350 | case R_IA64_REL32LSB: | |
3351 | dyn_r_type = R_IA64_REL32MSB; | |
3352 | break; | |
3353 | case R_IA64_DIR32LSB: | |
3354 | dyn_r_type = R_IA64_DIR32MSB; | |
3355 | break; | |
3356 | case R_IA64_FPTR32LSB: | |
3357 | dyn_r_type = R_IA64_FPTR32MSB; | |
3358 | break; | |
3359 | case R_IA64_DTPREL32LSB: | |
3360 | dyn_r_type = R_IA64_DTPREL32MSB; | |
3361 | break; | |
3362 | case R_IA64_REL64LSB: | |
3363 | dyn_r_type = R_IA64_REL64MSB; | |
3364 | break; | |
3365 | case R_IA64_DIR64LSB: | |
3366 | dyn_r_type = R_IA64_DIR64MSB; | |
3367 | break; | |
3368 | case R_IA64_FPTR64LSB: | |
3369 | dyn_r_type = R_IA64_FPTR64MSB; | |
3370 | break; | |
3371 | case R_IA64_TPREL64LSB: | |
3372 | dyn_r_type = R_IA64_TPREL64MSB; | |
3373 | break; | |
3374 | case R_IA64_DTPMOD64LSB: | |
3375 | dyn_r_type = R_IA64_DTPMOD64MSB; | |
3376 | break; | |
3377 | case R_IA64_DTPREL64LSB: | |
3378 | dyn_r_type = R_IA64_DTPREL64MSB; | |
3379 | break; | |
3380 | default: | |
3381 | BFD_ASSERT (FALSE); | |
3382 | break; | |
3383 | } | |
3384 | } | |
3385 | ||
3386 | elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec, | |
3387 | ia64_info->root.srelgot, | |
3388 | got_offset, dyn_r_type, | |
3389 | dynindx, addend); | |
3390 | } | |
3391 | } | |
3392 | ||
3393 | /* Return the address of the linkage table entry. */ | |
3394 | value = (got_sec->output_section->vma | |
3395 | + got_sec->output_offset | |
3396 | + got_offset); | |
3397 | ||
3398 | return value; | |
3399 | } | |
3400 | ||
3401 | /* Fill in a function descriptor consisting of the function's code | |
3402 | address and its global pointer. Return the descriptor's address. */ | |
3403 | ||
3404 | static bfd_vma | |
3405 | set_fptr_entry (bfd *abfd, struct bfd_link_info *info, | |
3406 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3407 | bfd_vma value) | |
3408 | { | |
3409 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3410 | asection *fptr_sec; | |
3411 | ||
3412 | ia64_info = elfNN_ia64_hash_table (info); | |
3413 | if (ia64_info == NULL) | |
3414 | return 0; | |
3415 | ||
3416 | fptr_sec = ia64_info->fptr_sec; | |
3417 | ||
3418 | if (!dyn_i->fptr_done) | |
3419 | { | |
3420 | dyn_i->fptr_done = 1; | |
3421 | ||
3422 | /* Fill in the function descriptor. */ | |
3423 | bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset); | |
3424 | bfd_put_64 (abfd, _bfd_get_gp_value (abfd), | |
3425 | fptr_sec->contents + dyn_i->fptr_offset + 8); | |
3426 | if (ia64_info->rel_fptr_sec) | |
3427 | { | |
3428 | Elf_Internal_Rela outrel; | |
3429 | bfd_byte *loc; | |
3430 | ||
3431 | if (bfd_little_endian (abfd)) | |
3432 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB); | |
3433 | else | |
3434 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB); | |
3435 | outrel.r_addend = value; | |
3436 | outrel.r_offset = (fptr_sec->output_section->vma | |
3437 | + fptr_sec->output_offset | |
3438 | + dyn_i->fptr_offset); | |
3439 | loc = ia64_info->rel_fptr_sec->contents; | |
3440 | loc += ia64_info->rel_fptr_sec->reloc_count++ | |
3441 | * sizeof (ElfNN_External_Rela); | |
3442 | bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); | |
3443 | } | |
3444 | } | |
3445 | ||
3446 | /* Return the descriptor's address. */ | |
3447 | value = (fptr_sec->output_section->vma | |
3448 | + fptr_sec->output_offset | |
3449 | + dyn_i->fptr_offset); | |
3450 | ||
3451 | return value; | |
3452 | } | |
3453 | ||
3454 | /* Fill in a PLTOFF entry consisting of the function's code address | |
3455 | and its global pointer. Return the descriptor's address. */ | |
3456 | ||
3457 | static bfd_vma | |
3458 | set_pltoff_entry (bfd *abfd, struct bfd_link_info *info, | |
3459 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3460 | bfd_vma value, bfd_boolean is_plt) | |
3461 | { | |
3462 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3463 | asection *pltoff_sec; | |
3464 | ||
3465 | ia64_info = elfNN_ia64_hash_table (info); | |
3466 | if (ia64_info == NULL) | |
3467 | return 0; | |
3468 | ||
3469 | pltoff_sec = ia64_info->pltoff_sec; | |
3470 | ||
3471 | /* Don't do anything if this symbol uses a real PLT entry. In | |
3472 | that case, we'll fill this in during finish_dynamic_symbol. */ | |
3473 | if ((! dyn_i->want_plt || is_plt) | |
3474 | && !dyn_i->pltoff_done) | |
3475 | { | |
3476 | bfd_vma gp = _bfd_get_gp_value (abfd); | |
3477 | ||
3478 | /* Fill in the function descriptor. */ | |
3479 | bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset); | |
3480 | bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8); | |
3481 | ||
3482 | /* Install dynamic relocations if needed. */ | |
3483 | if (!is_plt | |
3484 | && info->shared | |
3485 | && (!dyn_i->h | |
3486 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT | |
3487 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) | |
3488 | { | |
3489 | unsigned int dyn_r_type; | |
3490 | ||
3491 | if (bfd_big_endian (abfd)) | |
3492 | dyn_r_type = R_IA64_RELNNMSB; | |
3493 | else | |
3494 | dyn_r_type = R_IA64_RELNNLSB; | |
3495 | ||
3496 | elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, | |
3497 | ia64_info->rel_pltoff_sec, | |
3498 | dyn_i->pltoff_offset, | |
3499 | dyn_r_type, 0, value); | |
3500 | elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, | |
3501 | ia64_info->rel_pltoff_sec, | |
3502 | dyn_i->pltoff_offset + ARCH_SIZE / 8, | |
3503 | dyn_r_type, 0, gp); | |
3504 | } | |
3505 | ||
3506 | dyn_i->pltoff_done = 1; | |
3507 | } | |
3508 | ||
3509 | /* Return the descriptor's address. */ | |
3510 | value = (pltoff_sec->output_section->vma | |
3511 | + pltoff_sec->output_offset | |
3512 | + dyn_i->pltoff_offset); | |
3513 | ||
3514 | return value; | |
3515 | } | |
3516 | ||
3517 | /* Return the base VMA address which should be subtracted from real addresses | |
3518 | when resolving @tprel() relocation. | |
3519 | Main program TLS (whose template starts at PT_TLS p_vaddr) | |
3520 | is assigned offset round(2 * size of pointer, PT_TLS p_align). */ | |
3521 | ||
3522 | static bfd_vma | |
3523 | elfNN_ia64_tprel_base (struct bfd_link_info *info) | |
3524 | { | |
3525 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
3526 | return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4, | |
3527 | tls_sec->alignment_power); | |
3528 | } | |
3529 | ||
3530 | /* Return the base VMA address which should be subtracted from real addresses | |
3531 | when resolving @dtprel() relocation. | |
3532 | This is PT_TLS segment p_vaddr. */ | |
3533 | ||
3534 | static bfd_vma | |
3535 | elfNN_ia64_dtprel_base (struct bfd_link_info *info) | |
3536 | { | |
3537 | return elf_hash_table (info)->tls_sec->vma; | |
3538 | } | |
3539 | ||
3540 | /* Called through qsort to sort the .IA_64.unwind section during a | |
3541 | non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd | |
3542 | to the output bfd so we can do proper endianness frobbing. */ | |
3543 | ||
3544 | static bfd *elfNN_ia64_unwind_entry_compare_bfd; | |
3545 | ||
3546 | static int | |
3547 | elfNN_ia64_unwind_entry_compare (const PTR a, const PTR b) | |
3548 | { | |
3549 | bfd_vma av, bv; | |
3550 | ||
3551 | av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a); | |
3552 | bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b); | |
3553 | ||
3554 | return (av < bv ? -1 : av > bv ? 1 : 0); | |
3555 | } | |
3556 | ||
3557 | /* Make sure we've got ourselves a nice fat __gp value. */ | |
3558 | static bfd_boolean | |
3559 | elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final) | |
3560 | { | |
3561 | bfd_vma min_vma = (bfd_vma) -1, max_vma = 0; | |
3562 | bfd_vma min_short_vma = min_vma, max_short_vma = 0; | |
3563 | struct elf_link_hash_entry *gp; | |
3564 | bfd_vma gp_val; | |
3565 | asection *os; | |
3566 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3567 | ||
3568 | ia64_info = elfNN_ia64_hash_table (info); | |
3569 | if (ia64_info == NULL) | |
3570 | return FALSE; | |
3571 | ||
3572 | /* Find the min and max vma of all sections marked short. Also collect | |
3573 | min and max vma of any type, for use in selecting a nice gp. */ | |
3574 | for (os = abfd->sections; os ; os = os->next) | |
3575 | { | |
3576 | bfd_vma lo, hi; | |
3577 | ||
3578 | if ((os->flags & SEC_ALLOC) == 0) | |
3579 | continue; | |
3580 | ||
3581 | lo = os->vma; | |
3582 | /* When this function is called from elfNN_ia64_final_link | |
3583 | the correct value to use is os->size. When called from | |
3584 | elfNN_ia64_relax_section we are in the middle of section | |
3585 | sizing; some sections will already have os->size set, others | |
3586 | will have os->size zero and os->rawsize the previous size. */ | |
3587 | hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size); | |
3588 | if (hi < lo) | |
3589 | hi = (bfd_vma) -1; | |
3590 | ||
3591 | if (min_vma > lo) | |
3592 | min_vma = lo; | |
3593 | if (max_vma < hi) | |
3594 | max_vma = hi; | |
3595 | if (os->flags & SEC_SMALL_DATA) | |
3596 | { | |
3597 | if (min_short_vma > lo) | |
3598 | min_short_vma = lo; | |
3599 | if (max_short_vma < hi) | |
3600 | max_short_vma = hi; | |
3601 | } | |
3602 | } | |
3603 | ||
3604 | if (ia64_info->min_short_sec) | |
3605 | { | |
d17fe7b7 | 3606 | if (min_short_vma |
cbe79dfe TG |
3607 | > (ia64_info->min_short_sec->vma |
3608 | + ia64_info->min_short_offset)) | |
3609 | min_short_vma = (ia64_info->min_short_sec->vma | |
3610 | + ia64_info->min_short_offset); | |
3611 | if (max_short_vma | |
3612 | < (ia64_info->max_short_sec->vma | |
3613 | + ia64_info->max_short_offset)) | |
3614 | max_short_vma = (ia64_info->max_short_sec->vma | |
3615 | + ia64_info->max_short_offset); | |
3616 | } | |
3617 | ||
3618 | /* See if the user wants to force a value. */ | |
3619 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
3620 | FALSE, FALSE); | |
3621 | ||
3622 | if (gp | |
3623 | && (gp->root.type == bfd_link_hash_defined | |
3624 | || gp->root.type == bfd_link_hash_defweak)) | |
3625 | { | |
3626 | asection *gp_sec = gp->root.u.def.section; | |
3627 | gp_val = (gp->root.u.def.value | |
3628 | + gp_sec->output_section->vma | |
3629 | + gp_sec->output_offset); | |
3630 | } | |
3631 | else | |
3632 | { | |
3633 | /* Pick a sensible value. */ | |
3634 | ||
3635 | if (ia64_info->min_short_sec) | |
3636 | { | |
3637 | bfd_vma short_range = max_short_vma - min_short_vma; | |
3638 | ||
3639 | /* If min_short_sec is set, pick one in the middle bewteen | |
3640 | min_short_vma and max_short_vma. */ | |
3641 | if (short_range >= 0x400000) | |
3642 | goto overflow; | |
3643 | gp_val = min_short_vma + short_range / 2; | |
3644 | } | |
3645 | else | |
3646 | { | |
3647 | asection *got_sec = ia64_info->root.sgot; | |
3648 | ||
3649 | /* Start with just the address of the .got. */ | |
3650 | if (got_sec) | |
3651 | gp_val = got_sec->output_section->vma; | |
3652 | else if (max_short_vma != 0) | |
3653 | gp_val = min_short_vma; | |
3654 | else if (max_vma - min_vma < 0x200000) | |
3655 | gp_val = min_vma; | |
3656 | else | |
3657 | gp_val = max_vma - 0x200000 + 8; | |
3658 | } | |
3659 | ||
3660 | /* If it is possible to address the entire image, but we | |
3661 | don't with the choice above, adjust. */ | |
3662 | if (max_vma - min_vma < 0x400000 | |
3663 | && (max_vma - gp_val >= 0x200000 | |
3664 | || gp_val - min_vma > 0x200000)) | |
3665 | gp_val = min_vma + 0x200000; | |
3666 | else if (max_short_vma != 0) | |
3667 | { | |
3668 | /* If we don't cover all the short data, adjust. */ | |
3669 | if (max_short_vma - gp_val >= 0x200000) | |
3670 | gp_val = min_short_vma + 0x200000; | |
3671 | ||
3672 | /* If we're addressing stuff past the end, adjust back. */ | |
3673 | if (gp_val > max_vma) | |
3674 | gp_val = max_vma - 0x200000 + 8; | |
3675 | } | |
3676 | } | |
3677 | ||
3678 | /* Validate whether all SHF_IA_64_SHORT sections are within | |
3679 | range of the chosen GP. */ | |
3680 | ||
3681 | if (max_short_vma != 0) | |
3682 | { | |
3683 | if (max_short_vma - min_short_vma >= 0x400000) | |
3684 | { | |
3685 | overflow: | |
3686 | (*_bfd_error_handler) | |
3687 | (_("%s: short data segment overflowed (0x%lx >= 0x400000)"), | |
3688 | bfd_get_filename (abfd), | |
3689 | (unsigned long) (max_short_vma - min_short_vma)); | |
3690 | return FALSE; | |
3691 | } | |
3692 | else if ((gp_val > min_short_vma | |
3693 | && gp_val - min_short_vma > 0x200000) | |
3694 | || (gp_val < max_short_vma | |
3695 | && max_short_vma - gp_val >= 0x200000)) | |
3696 | { | |
3697 | (*_bfd_error_handler) | |
3698 | (_("%s: __gp does not cover short data segment"), | |
3699 | bfd_get_filename (abfd)); | |
3700 | return FALSE; | |
3701 | } | |
3702 | } | |
3703 | ||
3704 | _bfd_set_gp_value (abfd, gp_val); | |
3705 | ||
3706 | return TRUE; | |
3707 | } | |
3708 | ||
3709 | static bfd_boolean | |
3710 | elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info) | |
3711 | { | |
3712 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3713 | asection *unwind_output_sec; | |
3714 | ||
3715 | ia64_info = elfNN_ia64_hash_table (info); | |
3716 | if (ia64_info == NULL) | |
3717 | return FALSE; | |
3718 | ||
3719 | /* Make sure we've got ourselves a nice fat __gp value. */ | |
3720 | if (!info->relocatable) | |
3721 | { | |
3722 | bfd_vma gp_val; | |
3723 | struct elf_link_hash_entry *gp; | |
3724 | ||
3725 | /* We assume after gp is set, section size will only decrease. We | |
3726 | need to adjust gp for it. */ | |
3727 | _bfd_set_gp_value (abfd, 0); | |
3728 | if (! elfNN_ia64_choose_gp (abfd, info, TRUE)) | |
3729 | return FALSE; | |
3730 | gp_val = _bfd_get_gp_value (abfd); | |
3731 | ||
3732 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
3733 | FALSE, FALSE); | |
3734 | if (gp) | |
3735 | { | |
3736 | gp->root.type = bfd_link_hash_defined; | |
3737 | gp->root.u.def.value = gp_val; | |
3738 | gp->root.u.def.section = bfd_abs_section_ptr; | |
3739 | } | |
3740 | } | |
3741 | ||
3742 | /* If we're producing a final executable, we need to sort the contents | |
3743 | of the .IA_64.unwind section. Force this section to be relocated | |
3744 | into memory rather than written immediately to the output file. */ | |
3745 | unwind_output_sec = NULL; | |
3746 | if (!info->relocatable) | |
3747 | { | |
3748 | asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); | |
3749 | if (s) | |
3750 | { | |
3751 | unwind_output_sec = s->output_section; | |
3752 | unwind_output_sec->contents | |
3753 | = bfd_malloc (unwind_output_sec->size); | |
3754 | if (unwind_output_sec->contents == NULL) | |
3755 | return FALSE; | |
3756 | } | |
3757 | } | |
3758 | ||
3759 | /* Invoke the regular ELF backend linker to do all the work. */ | |
3760 | if (!bfd_elf_final_link (abfd, info)) | |
3761 | return FALSE; | |
3762 | ||
3763 | if (unwind_output_sec) | |
3764 | { | |
3765 | elfNN_ia64_unwind_entry_compare_bfd = abfd; | |
3766 | qsort (unwind_output_sec->contents, | |
3767 | (size_t) (unwind_output_sec->size / 24), | |
3768 | 24, | |
3769 | elfNN_ia64_unwind_entry_compare); | |
3770 | ||
3771 | if (! bfd_set_section_contents (abfd, unwind_output_sec, | |
3772 | unwind_output_sec->contents, (bfd_vma) 0, | |
3773 | unwind_output_sec->size)) | |
3774 | return FALSE; | |
3775 | } | |
3776 | ||
3777 | return TRUE; | |
3778 | } | |
3779 | ||
3780 | static bfd_boolean | |
3781 | elfNN_ia64_relocate_section (bfd *output_bfd, | |
3782 | struct bfd_link_info *info, | |
3783 | bfd *input_bfd, | |
3784 | asection *input_section, | |
3785 | bfd_byte *contents, | |
3786 | Elf_Internal_Rela *relocs, | |
3787 | Elf_Internal_Sym *local_syms, | |
3788 | asection **local_sections) | |
3789 | { | |
3790 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3791 | Elf_Internal_Shdr *symtab_hdr; | |
3792 | Elf_Internal_Rela *rel; | |
3793 | Elf_Internal_Rela *relend; | |
3794 | asection *srel; | |
3795 | bfd_boolean ret_val = TRUE; /* for non-fatal errors */ | |
3796 | bfd_vma gp_val; | |
3797 | ||
3798 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3799 | ia64_info = elfNN_ia64_hash_table (info); | |
3800 | if (ia64_info == NULL) | |
3801 | return FALSE; | |
3802 | ||
3803 | /* Infect various flags from the input section to the output section. */ | |
3804 | if (info->relocatable) | |
3805 | { | |
3806 | bfd_vma flags; | |
3807 | ||
3808 | flags = elf_section_data(input_section)->this_hdr.sh_flags; | |
3809 | flags &= SHF_IA_64_NORECOV; | |
3810 | ||
3811 | elf_section_data(input_section->output_section) | |
3812 | ->this_hdr.sh_flags |= flags; | |
3813 | } | |
3814 | ||
3815 | gp_val = _bfd_get_gp_value (output_bfd); | |
3816 | srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE); | |
3817 | ||
3818 | rel = relocs; | |
3819 | relend = relocs + input_section->reloc_count; | |
3820 | for (; rel < relend; ++rel) | |
3821 | { | |
3822 | struct elf_link_hash_entry *h; | |
3823 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
3824 | bfd_reloc_status_type r; | |
3825 | reloc_howto_type *howto; | |
3826 | unsigned long r_symndx; | |
3827 | Elf_Internal_Sym *sym; | |
3828 | unsigned int r_type; | |
3829 | bfd_vma value; | |
3830 | asection *sym_sec; | |
3831 | bfd_byte *hit_addr; | |
3832 | bfd_boolean dynamic_symbol_p; | |
3833 | bfd_boolean undef_weak_ref; | |
3834 | ||
3835 | r_type = ELFNN_R_TYPE (rel->r_info); | |
3836 | if (r_type > R_IA64_MAX_RELOC_CODE) | |
3837 | { | |
3838 | (*_bfd_error_handler) | |
3839 | (_("%B: unknown relocation type %d"), | |
3840 | input_bfd, (int) r_type); | |
3841 | bfd_set_error (bfd_error_bad_value); | |
3842 | ret_val = FALSE; | |
3843 | continue; | |
3844 | } | |
3845 | ||
3846 | howto = ia64_elf_lookup_howto (r_type); | |
3847 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
3848 | h = NULL; | |
3849 | sym = NULL; | |
3850 | sym_sec = NULL; | |
3851 | undef_weak_ref = FALSE; | |
3852 | ||
3853 | if (r_symndx < symtab_hdr->sh_info) | |
3854 | { | |
3855 | /* Reloc against local symbol. */ | |
3856 | asection *msec; | |
3857 | sym = local_syms + r_symndx; | |
3858 | sym_sec = local_sections[r_symndx]; | |
3859 | msec = sym_sec; | |
3860 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3861 | if (!info->relocatable | |
3862 | && (sym_sec->flags & SEC_MERGE) != 0 | |
3863 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
3864 | && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE) | |
d17fe7b7 | 3865 | { |
cbe79dfe TG |
3866 | struct elfNN_ia64_local_hash_entry *loc_h; |
3867 | ||
3868 | loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE); | |
3869 | if (loc_h && ! loc_h->sec_merge_done) | |
3870 | { | |
3871 | struct elfNN_ia64_dyn_sym_info *dynent; | |
3872 | unsigned int count; | |
3873 | ||
3874 | for (count = loc_h->count, dynent = loc_h->info; | |
3875 | count != 0; | |
3876 | count--, dynent++) | |
3877 | { | |
3878 | msec = sym_sec; | |
3879 | dynent->addend = | |
3880 | _bfd_merged_section_offset (output_bfd, &msec, | |
3881 | elf_section_data (msec)-> | |
3882 | sec_info, | |
3883 | sym->st_value | |
3884 | + dynent->addend); | |
3885 | dynent->addend -= sym->st_value; | |
3886 | dynent->addend += msec->output_section->vma | |
3887 | + msec->output_offset | |
3888 | - sym_sec->output_section->vma | |
3889 | - sym_sec->output_offset; | |
3890 | } | |
3891 | ||
3892 | /* We may have introduced duplicated entries. We need | |
3893 | to remove them properly. */ | |
3894 | count = sort_dyn_sym_info (loc_h->info, loc_h->count); | |
3895 | if (count != loc_h->count) | |
3896 | { | |
3897 | loc_h->count = count; | |
3898 | loc_h->sorted_count = count; | |
3899 | } | |
3900 | ||
3901 | loc_h->sec_merge_done = 1; | |
3902 | } | |
3903 | } | |
3904 | } | |
3905 | else | |
3906 | { | |
3907 | bfd_boolean unresolved_reloc; | |
3908 | bfd_boolean warned; | |
3909 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); | |
3910 | ||
3911 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
3912 | r_symndx, symtab_hdr, sym_hashes, | |
3913 | h, sym_sec, value, | |
3914 | unresolved_reloc, warned); | |
3915 | ||
3916 | if (h->root.type == bfd_link_hash_undefweak) | |
3917 | undef_weak_ref = TRUE; | |
3918 | else if (warned) | |
3919 | continue; | |
3920 | } | |
3921 | ||
3922 | if (sym_sec != NULL && elf_discarded_section (sym_sec)) | |
3923 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
3924 | rel, relend, howto, contents); | |
3925 | ||
3926 | if (info->relocatable) | |
3927 | continue; | |
3928 | ||
3929 | hit_addr = contents + rel->r_offset; | |
3930 | value += rel->r_addend; | |
3931 | dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type); | |
3932 | ||
3933 | switch (r_type) | |
3934 | { | |
3935 | case R_IA64_NONE: | |
3936 | case R_IA64_LDXMOV: | |
3937 | continue; | |
3938 | ||
3939 | case R_IA64_IMM14: | |
3940 | case R_IA64_IMM22: | |
3941 | case R_IA64_IMM64: | |
3942 | case R_IA64_DIR32MSB: | |
3943 | case R_IA64_DIR32LSB: | |
3944 | case R_IA64_DIR64MSB: | |
3945 | case R_IA64_DIR64LSB: | |
3946 | /* Install a dynamic relocation for this reloc. */ | |
3947 | if ((dynamic_symbol_p || info->shared) | |
3948 | && r_symndx != STN_UNDEF | |
3949 | && (input_section->flags & SEC_ALLOC) != 0) | |
3950 | { | |
3951 | unsigned int dyn_r_type; | |
3952 | long dynindx; | |
3953 | bfd_vma addend; | |
3954 | ||
3955 | BFD_ASSERT (srel != NULL); | |
3956 | ||
3957 | switch (r_type) | |
3958 | { | |
3959 | case R_IA64_IMM14: | |
3960 | case R_IA64_IMM22: | |
3961 | case R_IA64_IMM64: | |
3962 | /* ??? People shouldn't be doing non-pic code in | |
3963 | shared libraries nor dynamic executables. */ | |
3964 | (*_bfd_error_handler) | |
3965 | (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"), | |
3966 | input_bfd, | |
3967 | h ? h->root.root.string | |
3968 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3969 | sym_sec)); | |
3970 | ret_val = FALSE; | |
3971 | continue; | |
3972 | ||
3973 | default: | |
3974 | break; | |
3975 | } | |
3976 | ||
3977 | /* If we don't need dynamic symbol lookup, find a | |
3978 | matching RELATIVE relocation. */ | |
3979 | dyn_r_type = r_type; | |
3980 | if (dynamic_symbol_p) | |
3981 | { | |
3982 | dynindx = h->dynindx; | |
3983 | addend = rel->r_addend; | |
3984 | value = 0; | |
3985 | } | |
3986 | else | |
3987 | { | |
3988 | switch (r_type) | |
3989 | { | |
3990 | case R_IA64_DIR32MSB: | |
3991 | dyn_r_type = R_IA64_REL32MSB; | |
3992 | break; | |
3993 | case R_IA64_DIR32LSB: | |
3994 | dyn_r_type = R_IA64_REL32LSB; | |
3995 | break; | |
3996 | case R_IA64_DIR64MSB: | |
3997 | dyn_r_type = R_IA64_REL64MSB; | |
3998 | break; | |
3999 | case R_IA64_DIR64LSB: | |
4000 | dyn_r_type = R_IA64_REL64LSB; | |
4001 | break; | |
4002 | ||
4003 | default: | |
4004 | break; | |
4005 | } | |
4006 | dynindx = 0; | |
4007 | addend = value; | |
4008 | } | |
4009 | ||
4010 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4011 | srel, rel->r_offset, dyn_r_type, | |
4012 | dynindx, addend); | |
4013 | } | |
4014 | /* Fall through. */ | |
4015 | ||
4016 | case R_IA64_LTV32MSB: | |
4017 | case R_IA64_LTV32LSB: | |
4018 | case R_IA64_LTV64MSB: | |
4019 | case R_IA64_LTV64LSB: | |
4020 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4021 | break; | |
4022 | ||
4023 | case R_IA64_GPREL22: | |
4024 | case R_IA64_GPREL64I: | |
4025 | case R_IA64_GPREL32MSB: | |
4026 | case R_IA64_GPREL32LSB: | |
4027 | case R_IA64_GPREL64MSB: | |
4028 | case R_IA64_GPREL64LSB: | |
4029 | if (dynamic_symbol_p) | |
4030 | { | |
4031 | (*_bfd_error_handler) | |
4032 | (_("%B: @gprel relocation against dynamic symbol %s"), | |
4033 | input_bfd, | |
4034 | h ? h->root.root.string | |
4035 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4036 | sym_sec)); | |
4037 | ret_val = FALSE; | |
4038 | continue; | |
4039 | } | |
4040 | value -= gp_val; | |
4041 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4042 | break; | |
4043 | ||
4044 | case R_IA64_LTOFF22: | |
4045 | case R_IA64_LTOFF22X: | |
4046 | case R_IA64_LTOFF64I: | |
4047 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4048 | value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1), | |
4049 | rel->r_addend, value, R_IA64_DIRNNLSB); | |
4050 | value -= gp_val; | |
4051 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4052 | break; | |
4053 | ||
4054 | case R_IA64_PLTOFF22: | |
4055 | case R_IA64_PLTOFF64I: | |
4056 | case R_IA64_PLTOFF64MSB: | |
4057 | case R_IA64_PLTOFF64LSB: | |
4058 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4059 | value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE); | |
4060 | value -= gp_val; | |
4061 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4062 | break; | |
4063 | ||
4064 | case R_IA64_FPTR64I: | |
4065 | case R_IA64_FPTR32MSB: | |
4066 | case R_IA64_FPTR32LSB: | |
4067 | case R_IA64_FPTR64MSB: | |
4068 | case R_IA64_FPTR64LSB: | |
4069 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4070 | if (dyn_i->want_fptr) | |
4071 | { | |
4072 | if (!undef_weak_ref) | |
4073 | value = set_fptr_entry (output_bfd, info, dyn_i, value); | |
4074 | } | |
4075 | if (!dyn_i->want_fptr || info->pie) | |
4076 | { | |
4077 | long dynindx; | |
4078 | unsigned int dyn_r_type = r_type; | |
4079 | bfd_vma addend = rel->r_addend; | |
4080 | ||
4081 | /* Otherwise, we expect the dynamic linker to create | |
4082 | the entry. */ | |
4083 | ||
4084 | if (dyn_i->want_fptr) | |
4085 | { | |
4086 | if (r_type == R_IA64_FPTR64I) | |
4087 | { | |
4088 | /* We can't represent this without a dynamic symbol. | |
4089 | Adjust the relocation to be against an output | |
4090 | section symbol, which are always present in the | |
4091 | dynamic symbol table. */ | |
4092 | /* ??? People shouldn't be doing non-pic code in | |
4093 | shared libraries. Hork. */ | |
4094 | (*_bfd_error_handler) | |
4095 | (_("%B: linking non-pic code in a position independent executable"), | |
4096 | input_bfd); | |
4097 | ret_val = FALSE; | |
4098 | continue; | |
4099 | } | |
4100 | dynindx = 0; | |
4101 | addend = value; | |
4102 | dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB; | |
4103 | } | |
4104 | else if (h) | |
4105 | { | |
4106 | if (h->dynindx != -1) | |
4107 | dynindx = h->dynindx; | |
4108 | else | |
4109 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4110 | (info, h->root.u.def.section->owner, | |
4111 | global_sym_index (h))); | |
4112 | value = 0; | |
4113 | } | |
4114 | else | |
4115 | { | |
4116 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4117 | (info, input_bfd, (long) r_symndx)); | |
4118 | value = 0; | |
4119 | } | |
4120 | ||
4121 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4122 | srel, rel->r_offset, dyn_r_type, | |
4123 | dynindx, addend); | |
4124 | } | |
4125 | ||
4126 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4127 | break; | |
4128 | ||
4129 | case R_IA64_LTOFF_FPTR22: | |
4130 | case R_IA64_LTOFF_FPTR64I: | |
4131 | case R_IA64_LTOFF_FPTR32MSB: | |
4132 | case R_IA64_LTOFF_FPTR32LSB: | |
4133 | case R_IA64_LTOFF_FPTR64MSB: | |
4134 | case R_IA64_LTOFF_FPTR64LSB: | |
4135 | { | |
4136 | long dynindx; | |
4137 | ||
4138 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4139 | if (dyn_i->want_fptr) | |
4140 | { | |
4141 | BFD_ASSERT (h == NULL || h->dynindx == -1); | |
4142 | if (!undef_weak_ref) | |
4143 | value = set_fptr_entry (output_bfd, info, dyn_i, value); | |
4144 | dynindx = -1; | |
4145 | } | |
4146 | else | |
4147 | { | |
4148 | /* Otherwise, we expect the dynamic linker to create | |
4149 | the entry. */ | |
4150 | if (h) | |
4151 | { | |
4152 | if (h->dynindx != -1) | |
4153 | dynindx = h->dynindx; | |
4154 | else | |
4155 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4156 | (info, h->root.u.def.section->owner, | |
4157 | global_sym_index (h))); | |
4158 | } | |
4159 | else | |
4160 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4161 | (info, input_bfd, (long) r_symndx)); | |
4162 | value = 0; | |
4163 | } | |
4164 | ||
4165 | value = set_got_entry (output_bfd, info, dyn_i, dynindx, | |
4166 | rel->r_addend, value, R_IA64_FPTRNNLSB); | |
4167 | value -= gp_val; | |
4168 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4169 | } | |
4170 | break; | |
4171 | ||
4172 | case R_IA64_PCREL32MSB: | |
4173 | case R_IA64_PCREL32LSB: | |
4174 | case R_IA64_PCREL64MSB: | |
4175 | case R_IA64_PCREL64LSB: | |
4176 | /* Install a dynamic relocation for this reloc. */ | |
4177 | if (dynamic_symbol_p && r_symndx != STN_UNDEF) | |
4178 | { | |
4179 | BFD_ASSERT (srel != NULL); | |
4180 | ||
4181 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4182 | srel, rel->r_offset, r_type, | |
4183 | h->dynindx, rel->r_addend); | |
4184 | } | |
4185 | goto finish_pcrel; | |
4186 | ||
4187 | case R_IA64_PCREL21B: | |
4188 | case R_IA64_PCREL60B: | |
4189 | /* We should have created a PLT entry for any dynamic symbol. */ | |
4190 | dyn_i = NULL; | |
4191 | if (h) | |
4192 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); | |
4193 | ||
4194 | if (dyn_i && dyn_i->want_plt2) | |
4195 | { | |
4196 | /* Should have caught this earlier. */ | |
4197 | BFD_ASSERT (rel->r_addend == 0); | |
4198 | ||
4199 | value = (ia64_info->root.splt->output_section->vma | |
4200 | + ia64_info->root.splt->output_offset | |
4201 | + dyn_i->plt2_offset); | |
4202 | } | |
4203 | else | |
4204 | { | |
4205 | /* Since there's no PLT entry, Validate that this is | |
4206 | locally defined. */ | |
4207 | BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL); | |
4208 | ||
4209 | /* If the symbol is undef_weak, we shouldn't be trying | |
4210 | to call it. There's every chance that we'd wind up | |
4211 | with an out-of-range fixup here. Don't bother setting | |
4212 | any value at all. */ | |
4213 | if (undef_weak_ref) | |
4214 | continue; | |
4215 | } | |
4216 | goto finish_pcrel; | |
4217 | ||
4218 | case R_IA64_PCREL21BI: | |
4219 | case R_IA64_PCREL21F: | |
4220 | case R_IA64_PCREL21M: | |
4221 | case R_IA64_PCREL22: | |
4222 | case R_IA64_PCREL64I: | |
4223 | /* The PCREL21BI reloc is specifically not intended for use with | |
4224 | dynamic relocs. PCREL21F and PCREL21M are used for speculation | |
4225 | fixup code, and thus probably ought not be dynamic. The | |
4226 | PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */ | |
4227 | if (dynamic_symbol_p) | |
4228 | { | |
4229 | const char *msg; | |
4230 | ||
4231 | if (r_type == R_IA64_PCREL21BI) | |
4232 | msg = _("%B: @internal branch to dynamic symbol %s"); | |
4233 | else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M) | |
4234 | msg = _("%B: speculation fixup to dynamic symbol %s"); | |
4235 | else | |
4236 | msg = _("%B: @pcrel relocation against dynamic symbol %s"); | |
4237 | (*_bfd_error_handler) (msg, input_bfd, | |
4238 | h ? h->root.root.string | |
4239 | : bfd_elf_sym_name (input_bfd, | |
4240 | symtab_hdr, | |
4241 | sym, | |
4242 | sym_sec)); | |
4243 | ret_val = FALSE; | |
4244 | continue; | |
4245 | } | |
4246 | goto finish_pcrel; | |
4247 | ||
4248 | finish_pcrel: | |
4249 | /* Make pc-relative. */ | |
4250 | value -= (input_section->output_section->vma | |
4251 | + input_section->output_offset | |
4252 | + rel->r_offset) & ~ (bfd_vma) 0x3; | |
4253 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4254 | break; | |
4255 | ||
4256 | case R_IA64_SEGREL32MSB: | |
4257 | case R_IA64_SEGREL32LSB: | |
4258 | case R_IA64_SEGREL64MSB: | |
4259 | case R_IA64_SEGREL64LSB: | |
4260 | { | |
4261 | /* Find the segment that contains the output_section. */ | |
4262 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section | |
4263 | (output_bfd, input_section->output_section); | |
4264 | ||
4265 | if (p == NULL) | |
4266 | { | |
4267 | r = bfd_reloc_notsupported; | |
4268 | } | |
4269 | else | |
4270 | { | |
4271 | /* The VMA of the segment is the vaddr of the associated | |
4272 | program header. */ | |
4273 | if (value > p->p_vaddr) | |
4274 | value -= p->p_vaddr; | |
4275 | else | |
4276 | value = 0; | |
4277 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4278 | } | |
4279 | break; | |
4280 | } | |
4281 | ||
4282 | case R_IA64_SECREL32MSB: | |
4283 | case R_IA64_SECREL32LSB: | |
4284 | case R_IA64_SECREL64MSB: | |
4285 | case R_IA64_SECREL64LSB: | |
4286 | /* Make output-section relative to section where the symbol | |
4287 | is defined. PR 475 */ | |
4288 | if (sym_sec) | |
4289 | value -= sym_sec->output_section->vma; | |
4290 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4291 | break; | |
4292 | ||
4293 | case R_IA64_IPLTMSB: | |
4294 | case R_IA64_IPLTLSB: | |
4295 | /* Install a dynamic relocation for this reloc. */ | |
4296 | if ((dynamic_symbol_p || info->shared) | |
4297 | && (input_section->flags & SEC_ALLOC) != 0) | |
4298 | { | |
4299 | BFD_ASSERT (srel != NULL); | |
4300 | ||
4301 | /* If we don't need dynamic symbol lookup, install two | |
4302 | RELATIVE relocations. */ | |
4303 | if (!dynamic_symbol_p) | |
4304 | { | |
4305 | unsigned int dyn_r_type; | |
4306 | ||
4307 | if (r_type == R_IA64_IPLTMSB) | |
4308 | dyn_r_type = R_IA64_REL64MSB; | |
4309 | else | |
4310 | dyn_r_type = R_IA64_REL64LSB; | |
4311 | ||
4312 | elfNN_ia64_install_dyn_reloc (output_bfd, info, | |
4313 | input_section, | |
4314 | srel, rel->r_offset, | |
4315 | dyn_r_type, 0, value); | |
4316 | elfNN_ia64_install_dyn_reloc (output_bfd, info, | |
4317 | input_section, | |
4318 | srel, rel->r_offset + 8, | |
4319 | dyn_r_type, 0, gp_val); | |
4320 | } | |
4321 | else | |
4322 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4323 | srel, rel->r_offset, r_type, | |
4324 | h->dynindx, rel->r_addend); | |
4325 | } | |
4326 | ||
4327 | if (r_type == R_IA64_IPLTMSB) | |
4328 | r_type = R_IA64_DIR64MSB; | |
4329 | else | |
4330 | r_type = R_IA64_DIR64LSB; | |
4331 | ia64_elf_install_value (hit_addr, value, r_type); | |
4332 | r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type); | |
4333 | break; | |
4334 | ||
4335 | case R_IA64_TPREL14: | |
4336 | case R_IA64_TPREL22: | |
4337 | case R_IA64_TPREL64I: | |
4338 | if (elf_hash_table (info)->tls_sec == NULL) | |
4339 | goto missing_tls_sec; | |
4340 | value -= elfNN_ia64_tprel_base (info); | |
4341 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4342 | break; | |
4343 | ||
4344 | case R_IA64_DTPREL14: | |
4345 | case R_IA64_DTPREL22: | |
4346 | case R_IA64_DTPREL64I: | |
4347 | case R_IA64_DTPREL32LSB: | |
4348 | case R_IA64_DTPREL32MSB: | |
4349 | case R_IA64_DTPREL64LSB: | |
4350 | case R_IA64_DTPREL64MSB: | |
4351 | if (elf_hash_table (info)->tls_sec == NULL) | |
4352 | goto missing_tls_sec; | |
4353 | value -= elfNN_ia64_dtprel_base (info); | |
4354 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4355 | break; | |
4356 | ||
4357 | case R_IA64_LTOFF_TPREL22: | |
4358 | case R_IA64_LTOFF_DTPMOD22: | |
4359 | case R_IA64_LTOFF_DTPREL22: | |
4360 | { | |
4361 | int got_r_type; | |
4362 | long dynindx = h ? h->dynindx : -1; | |
4363 | bfd_vma r_addend = rel->r_addend; | |
4364 | ||
4365 | switch (r_type) | |
4366 | { | |
4367 | default: | |
4368 | case R_IA64_LTOFF_TPREL22: | |
4369 | if (!dynamic_symbol_p) | |
4370 | { | |
4371 | if (elf_hash_table (info)->tls_sec == NULL) | |
4372 | goto missing_tls_sec; | |
4373 | if (!info->shared) | |
4374 | value -= elfNN_ia64_tprel_base (info); | |
4375 | else | |
4376 | { | |
4377 | r_addend += value - elfNN_ia64_dtprel_base (info); | |
4378 | dynindx = 0; | |
4379 | } | |
4380 | } | |
4381 | got_r_type = R_IA64_TPREL64LSB; | |
4382 | break; | |
4383 | case R_IA64_LTOFF_DTPMOD22: | |
4384 | if (!dynamic_symbol_p && !info->shared) | |
4385 | value = 1; | |
4386 | got_r_type = R_IA64_DTPMOD64LSB; | |
4387 | break; | |
4388 | case R_IA64_LTOFF_DTPREL22: | |
4389 | if (!dynamic_symbol_p) | |
4390 | { | |
4391 | if (elf_hash_table (info)->tls_sec == NULL) | |
4392 | goto missing_tls_sec; | |
4393 | value -= elfNN_ia64_dtprel_base (info); | |
4394 | } | |
4395 | got_r_type = R_IA64_DTPRELNNLSB; | |
4396 | break; | |
4397 | } | |
4398 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4399 | value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend, | |
4400 | value, got_r_type); | |
4401 | value -= gp_val; | |
4402 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4403 | } | |
4404 | break; | |
4405 | ||
4406 | default: | |
4407 | r = bfd_reloc_notsupported; | |
4408 | break; | |
4409 | } | |
4410 | ||
4411 | switch (r) | |
4412 | { | |
4413 | case bfd_reloc_ok: | |
4414 | break; | |
4415 | ||
4416 | case bfd_reloc_undefined: | |
4417 | /* This can happen for global table relative relocs if | |
4418 | __gp is undefined. This is a panic situation so we | |
4419 | don't try to continue. */ | |
4420 | (*info->callbacks->undefined_symbol) | |
4421 | (info, "__gp", input_bfd, input_section, rel->r_offset, 1); | |
4422 | return FALSE; | |
4423 | ||
4424 | case bfd_reloc_notsupported: | |
4425 | { | |
4426 | const char *name; | |
4427 | ||
4428 | if (h) | |
4429 | name = h->root.root.string; | |
4430 | else | |
4431 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4432 | sym_sec); | |
4433 | if (!(*info->callbacks->warning) (info, _("unsupported reloc"), | |
4434 | name, input_bfd, | |
4435 | input_section, rel->r_offset)) | |
4436 | return FALSE; | |
4437 | ret_val = FALSE; | |
4438 | } | |
4439 | break; | |
4440 | ||
4441 | case bfd_reloc_dangerous: | |
4442 | case bfd_reloc_outofrange: | |
4443 | case bfd_reloc_overflow: | |
4444 | default: | |
4445 | missing_tls_sec: | |
4446 | { | |
4447 | const char *name; | |
4448 | ||
4449 | if (h) | |
4450 | name = h->root.root.string; | |
4451 | else | |
4452 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4453 | sym_sec); | |
4454 | ||
4455 | switch (r_type) | |
4456 | { | |
4457 | case R_IA64_TPREL14: | |
4458 | case R_IA64_TPREL22: | |
4459 | case R_IA64_TPREL64I: | |
4460 | case R_IA64_DTPREL14: | |
4461 | case R_IA64_DTPREL22: | |
4462 | case R_IA64_DTPREL64I: | |
4463 | case R_IA64_DTPREL32LSB: | |
4464 | case R_IA64_DTPREL32MSB: | |
4465 | case R_IA64_DTPREL64LSB: | |
4466 | case R_IA64_DTPREL64MSB: | |
4467 | case R_IA64_LTOFF_TPREL22: | |
4468 | case R_IA64_LTOFF_DTPMOD22: | |
4469 | case R_IA64_LTOFF_DTPREL22: | |
4470 | (*_bfd_error_handler) | |
4471 | (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."), | |
4472 | input_bfd, input_section, howto->name, name, | |
4473 | rel->r_offset); | |
4474 | break; | |
4475 | ||
4476 | case R_IA64_PCREL21B: | |
4477 | case R_IA64_PCREL21BI: | |
4478 | case R_IA64_PCREL21M: | |
4479 | case R_IA64_PCREL21F: | |
4480 | if (is_elf_hash_table (info->hash)) | |
4481 | { | |
4482 | /* Relaxtion is always performed for ELF output. | |
4483 | Overflow failures for those relocations mean | |
4484 | that the section is too big to relax. */ | |
4485 | (*_bfd_error_handler) | |
4486 | (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."), | |
4487 | input_bfd, input_section, howto->name, name, | |
4488 | rel->r_offset, input_section->size); | |
4489 | break; | |
4490 | } | |
4491 | default: | |
4492 | if (!(*info->callbacks->reloc_overflow) (info, | |
4493 | &h->root, | |
4494 | name, | |
4495 | howto->name, | |
4496 | (bfd_vma) 0, | |
4497 | input_bfd, | |
4498 | input_section, | |
4499 | rel->r_offset)) | |
4500 | return FALSE; | |
4501 | break; | |
4502 | } | |
4503 | ||
4504 | ret_val = FALSE; | |
4505 | } | |
4506 | break; | |
4507 | } | |
4508 | } | |
4509 | ||
4510 | return ret_val; | |
4511 | } | |
4512 | ||
4513 | static bfd_boolean | |
4514 | elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd, | |
4515 | struct bfd_link_info *info, | |
4516 | struct elf_link_hash_entry *h, | |
4517 | Elf_Internal_Sym *sym) | |
4518 | { | |
4519 | struct elfNN_ia64_link_hash_table *ia64_info; | |
4520 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
4521 | ||
4522 | ia64_info = elfNN_ia64_hash_table (info); | |
4523 | if (ia64_info == NULL) | |
4524 | return FALSE; | |
4525 | ||
4526 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); | |
4527 | ||
4528 | /* Fill in the PLT data, if required. */ | |
4529 | if (dyn_i && dyn_i->want_plt) | |
4530 | { | |
4531 | Elf_Internal_Rela outrel; | |
4532 | bfd_byte *loc; | |
4533 | asection *plt_sec; | |
4534 | bfd_vma plt_addr, pltoff_addr, gp_val, plt_index; | |
4535 | ||
4536 | gp_val = _bfd_get_gp_value (output_bfd); | |
4537 | ||
4538 | /* Initialize the minimal PLT entry. */ | |
4539 | ||
4540 | plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; | |
4541 | plt_sec = ia64_info->root.splt; | |
4542 | loc = plt_sec->contents + dyn_i->plt_offset; | |
4543 | ||
4544 | memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE); | |
4545 | ia64_elf_install_value (loc, plt_index, R_IA64_IMM22); | |
4546 | ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B); | |
4547 | ||
4548 | plt_addr = (plt_sec->output_section->vma | |
4549 | + plt_sec->output_offset | |
4550 | + dyn_i->plt_offset); | |
4551 | pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE); | |
4552 | ||
4553 | /* Initialize the FULL PLT entry, if needed. */ | |
4554 | if (dyn_i->want_plt2) | |
4555 | { | |
4556 | loc = plt_sec->contents + dyn_i->plt2_offset; | |
4557 | ||
4558 | memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); | |
4559 | ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22); | |
4560 | ||
4561 | /* Mark the symbol as undefined, rather than as defined in the | |
4562 | plt section. Leave the value alone. */ | |
4563 | /* ??? We didn't redefine it in adjust_dynamic_symbol in the | |
4564 | first place. But perhaps elflink.c did some for us. */ | |
4565 | if (!h->def_regular) | |
4566 | sym->st_shndx = SHN_UNDEF; | |
4567 | } | |
4568 | ||
4569 | /* Create the dynamic relocation. */ | |
4570 | outrel.r_offset = pltoff_addr; | |
4571 | if (bfd_little_endian (output_bfd)) | |
4572 | outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB); | |
4573 | else | |
4574 | outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB); | |
4575 | outrel.r_addend = 0; | |
4576 | ||
4577 | /* This is fun. In the .IA_64.pltoff section, we've got entries | |
4578 | that correspond both to real PLT entries, and those that | |
4579 | happened to resolve to local symbols but need to be created | |
4580 | to satisfy @pltoff relocations. The .rela.IA_64.pltoff | |
4581 | relocations for the real PLT should come at the end of the | |
4582 | section, so that they can be indexed by plt entry at runtime. | |
4583 | ||
4584 | We emitted all of the relocations for the non-PLT @pltoff | |
4585 | entries during relocate_section. So we can consider the | |
4586 | existing sec->reloc_count to be the base of the array of | |
4587 | PLT relocations. */ | |
4588 | ||
4589 | loc = ia64_info->rel_pltoff_sec->contents; | |
4590 | loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index) | |
4591 | * sizeof (ElfNN_External_Rela)); | |
4592 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); | |
4593 | } | |
4594 | ||
4595 | /* Mark some specially defined symbols as absolute. */ | |
4596 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4597 | || h == ia64_info->root.hgot | |
4598 | || h == ia64_info->root.hplt) | |
4599 | sym->st_shndx = SHN_ABS; | |
4600 | ||
4601 | return TRUE; | |
4602 | } | |
4603 | ||
4604 | static bfd_boolean | |
4605 | elfNN_ia64_finish_dynamic_sections (bfd *abfd, | |
4606 | struct bfd_link_info *info) | |
4607 | { | |
4608 | struct elfNN_ia64_link_hash_table *ia64_info; | |
4609 | bfd *dynobj; | |
4610 | ||
4611 | ia64_info = elfNN_ia64_hash_table (info); | |
4612 | if (ia64_info == NULL) | |
4613 | return FALSE; | |
4614 | ||
4615 | dynobj = ia64_info->root.dynobj; | |
4616 | ||
4617 | if (elf_hash_table (info)->dynamic_sections_created) | |
4618 | { | |
4619 | ElfNN_External_Dyn *dyncon, *dynconend; | |
4620 | asection *sdyn, *sgotplt; | |
4621 | bfd_vma gp_val; | |
4622 | ||
4623 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4624 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4625 | BFD_ASSERT (sdyn != NULL); | |
4626 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; | |
4627 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
4628 | ||
4629 | gp_val = _bfd_get_gp_value (abfd); | |
4630 | ||
4631 | for (; dyncon < dynconend; dyncon++) | |
4632 | { | |
4633 | Elf_Internal_Dyn dyn; | |
4634 | ||
4635 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); | |
4636 | ||
4637 | switch (dyn.d_tag) | |
4638 | { | |
4639 | case DT_PLTGOT: | |
4640 | dyn.d_un.d_ptr = gp_val; | |
4641 | break; | |
4642 | ||
4643 | case DT_PLTRELSZ: | |
4644 | dyn.d_un.d_val = (ia64_info->minplt_entries | |
4645 | * sizeof (ElfNN_External_Rela)); | |
4646 | break; | |
4647 | ||
4648 | case DT_JMPREL: | |
4649 | /* See the comment above in finish_dynamic_symbol. */ | |
4650 | dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma | |
4651 | + ia64_info->rel_pltoff_sec->output_offset | |
4652 | + (ia64_info->rel_pltoff_sec->reloc_count | |
4653 | * sizeof (ElfNN_External_Rela))); | |
4654 | break; | |
4655 | ||
4656 | case DT_IA_64_PLT_RESERVE: | |
4657 | dyn.d_un.d_ptr = (sgotplt->output_section->vma | |
4658 | + sgotplt->output_offset); | |
4659 | break; | |
4660 | ||
4661 | case DT_RELASZ: | |
4662 | /* Do not have RELASZ include JMPREL. This makes things | |
4663 | easier on ld.so. This is not what the rest of BFD set up. */ | |
4664 | dyn.d_un.d_val -= (ia64_info->minplt_entries | |
4665 | * sizeof (ElfNN_External_Rela)); | |
4666 | break; | |
4667 | } | |
4668 | ||
4669 | bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon); | |
4670 | } | |
4671 | ||
4672 | /* Initialize the PLT0 entry. */ | |
4673 | if (ia64_info->root.splt) | |
4674 | { | |
4675 | bfd_byte *loc = ia64_info->root.splt->contents; | |
4676 | bfd_vma pltres; | |
4677 | ||
4678 | memcpy (loc, plt_header, PLT_HEADER_SIZE); | |
4679 | ||
4680 | pltres = (sgotplt->output_section->vma | |
4681 | + sgotplt->output_offset | |
4682 | - gp_val); | |
4683 | ||
4684 | ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22); | |
4685 | } | |
4686 | } | |
4687 | ||
4688 | return TRUE; | |
4689 | } | |
4690 | \f | |
4691 | /* ELF file flag handling: */ | |
4692 | ||
4693 | /* Function to keep IA-64 specific file flags. */ | |
4694 | static bfd_boolean | |
4695 | elfNN_ia64_set_private_flags (bfd *abfd, flagword flags) | |
4696 | { | |
4697 | BFD_ASSERT (!elf_flags_init (abfd) | |
4698 | || elf_elfheader (abfd)->e_flags == flags); | |
4699 | ||
4700 | elf_elfheader (abfd)->e_flags = flags; | |
4701 | elf_flags_init (abfd) = TRUE; | |
4702 | return TRUE; | |
4703 | } | |
4704 | ||
4705 | /* Merge backend specific data from an object file to the output | |
4706 | object file when linking. */ | |
4707 | static bfd_boolean | |
4708 | elfNN_ia64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
4709 | { | |
4710 | flagword out_flags; | |
4711 | flagword in_flags; | |
4712 | bfd_boolean ok = TRUE; | |
4713 | ||
4714 | /* Don't even pretend to support mixed-format linking. */ | |
4715 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4716 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
4717 | return FALSE; | |
4718 | ||
4719 | in_flags = elf_elfheader (ibfd)->e_flags; | |
4720 | out_flags = elf_elfheader (obfd)->e_flags; | |
4721 | ||
4722 | if (! elf_flags_init (obfd)) | |
4723 | { | |
4724 | elf_flags_init (obfd) = TRUE; | |
4725 | elf_elfheader (obfd)->e_flags = in_flags; | |
4726 | ||
4727 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
4728 | && bfd_get_arch_info (obfd)->the_default) | |
4729 | { | |
4730 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
4731 | bfd_get_mach (ibfd)); | |
4732 | } | |
4733 | ||
4734 | return TRUE; | |
4735 | } | |
4736 | ||
4737 | /* Check flag compatibility. */ | |
4738 | if (in_flags == out_flags) | |
4739 | return TRUE; | |
4740 | ||
4741 | /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ | |
4742 | if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) | |
4743 | elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; | |
4744 | ||
4745 | if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) | |
4746 | { | |
4747 | (*_bfd_error_handler) | |
4748 | (_("%B: linking trap-on-NULL-dereference with non-trapping files"), | |
4749 | ibfd); | |
4750 | ||
4751 | bfd_set_error (bfd_error_bad_value); | |
4752 | ok = FALSE; | |
4753 | } | |
4754 | if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) | |
4755 | { | |
4756 | (*_bfd_error_handler) | |
4757 | (_("%B: linking big-endian files with little-endian files"), | |
4758 | ibfd); | |
4759 | ||
4760 | bfd_set_error (bfd_error_bad_value); | |
4761 | ok = FALSE; | |
4762 | } | |
4763 | if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) | |
4764 | { | |
4765 | (*_bfd_error_handler) | |
4766 | (_("%B: linking 64-bit files with 32-bit files"), | |
4767 | ibfd); | |
4768 | ||
4769 | bfd_set_error (bfd_error_bad_value); | |
4770 | ok = FALSE; | |
4771 | } | |
4772 | if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) | |
4773 | { | |
4774 | (*_bfd_error_handler) | |
4775 | (_("%B: linking constant-gp files with non-constant-gp files"), | |
4776 | ibfd); | |
4777 | ||
4778 | bfd_set_error (bfd_error_bad_value); | |
4779 | ok = FALSE; | |
4780 | } | |
4781 | if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) | |
4782 | != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) | |
4783 | { | |
4784 | (*_bfd_error_handler) | |
4785 | (_("%B: linking auto-pic files with non-auto-pic files"), | |
4786 | ibfd); | |
4787 | ||
4788 | bfd_set_error (bfd_error_bad_value); | |
4789 | ok = FALSE; | |
4790 | } | |
4791 | ||
4792 | return ok; | |
4793 | } | |
4794 | ||
4795 | static bfd_boolean | |
4796 | elfNN_ia64_print_private_bfd_data (bfd *abfd, PTR ptr) | |
4797 | { | |
4798 | FILE *file = (FILE *) ptr; | |
4799 | flagword flags = elf_elfheader (abfd)->e_flags; | |
4800 | ||
4801 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
4802 | ||
4803 | fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", | |
4804 | (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", | |
4805 | (flags & EF_IA_64_EXT) ? "EXT, " : "", | |
4806 | (flags & EF_IA_64_BE) ? "BE, " : "LE, ", | |
4807 | (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", | |
4808 | (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", | |
4809 | (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", | |
4810 | (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", | |
4811 | (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); | |
4812 | ||
4813 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4814 | return TRUE; | |
4815 | } | |
4816 | ||
4817 | static enum elf_reloc_type_class | |
4818 | elfNN_ia64_reloc_type_class (const Elf_Internal_Rela *rela) | |
4819 | { | |
4820 | switch ((int) ELFNN_R_TYPE (rela->r_info)) | |
4821 | { | |
4822 | case R_IA64_REL32MSB: | |
4823 | case R_IA64_REL32LSB: | |
4824 | case R_IA64_REL64MSB: | |
4825 | case R_IA64_REL64LSB: | |
4826 | return reloc_class_relative; | |
4827 | case R_IA64_IPLTMSB: | |
4828 | case R_IA64_IPLTLSB: | |
4829 | return reloc_class_plt; | |
4830 | case R_IA64_COPY: | |
4831 | return reloc_class_copy; | |
4832 | default: | |
4833 | return reloc_class_normal; | |
4834 | } | |
4835 | } | |
4836 | ||
4837 | static const struct bfd_elf_special_section elfNN_ia64_special_sections[] = | |
4838 | { | |
4839 | { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, | |
4840 | { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, | |
4841 | { NULL, 0, 0, 0, 0 } | |
4842 | }; | |
4843 | ||
4844 | static bfd_boolean | |
4845 | elfNN_ia64_object_p (bfd *abfd) | |
4846 | { | |
4847 | asection *sec; | |
4848 | asection *group, *unwi, *unw; | |
4849 | flagword flags; | |
4850 | const char *name; | |
4851 | char *unwi_name, *unw_name; | |
4852 | bfd_size_type amt; | |
4853 | ||
4854 | if (abfd->flags & DYNAMIC) | |
4855 | return TRUE; | |
4856 | ||
4857 | /* Flags for fake group section. */ | |
4858 | flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE | |
4859 | | SEC_EXCLUDE); | |
4860 | ||
4861 | /* We add a fake section group for each .gnu.linkonce.t.* section, | |
4862 | which isn't in a section group, and its unwind sections. */ | |
4863 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
4864 | { | |
4865 | if (elf_sec_group (sec) == NULL | |
4866 | && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP)) | |
4867 | == (SEC_LINK_ONCE | SEC_CODE)) | |
4868 | && CONST_STRNEQ (sec->name, ".gnu.linkonce.t.")) | |
4869 | { | |
4870 | name = sec->name + 16; | |
4871 | ||
4872 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi."); | |
4873 | unwi_name = bfd_alloc (abfd, amt); | |
4874 | if (!unwi_name) | |
4875 | return FALSE; | |
4876 | ||
4877 | strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name); | |
4878 | unwi = bfd_get_section_by_name (abfd, unwi_name); | |
4879 | ||
4880 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw."); | |
4881 | unw_name = bfd_alloc (abfd, amt); | |
4882 | if (!unw_name) | |
4883 | return FALSE; | |
4884 | ||
4885 | strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name); | |
4886 | unw = bfd_get_section_by_name (abfd, unw_name); | |
4887 | ||
4888 | /* We need to create a fake group section for it and its | |
4889 | unwind sections. */ | |
4890 | group = bfd_make_section_anyway_with_flags (abfd, name, | |
4891 | flags); | |
4892 | if (group == NULL) | |
4893 | return FALSE; | |
4894 | ||
4895 | /* Move the fake group section to the beginning. */ | |
4896 | bfd_section_list_remove (abfd, group); | |
4897 | bfd_section_list_prepend (abfd, group); | |
4898 | ||
4899 | elf_next_in_group (group) = sec; | |
4900 | ||
4901 | elf_group_name (sec) = name; | |
4902 | elf_next_in_group (sec) = sec; | |
4903 | elf_sec_group (sec) = group; | |
4904 | ||
4905 | if (unwi) | |
4906 | { | |
4907 | elf_group_name (unwi) = name; | |
4908 | elf_next_in_group (unwi) = sec; | |
4909 | elf_next_in_group (sec) = unwi; | |
4910 | elf_sec_group (unwi) = group; | |
4911 | } | |
4912 | ||
4913 | if (unw) | |
4914 | { | |
4915 | elf_group_name (unw) = name; | |
4916 | if (unwi) | |
4917 | { | |
4918 | elf_next_in_group (unw) = elf_next_in_group (unwi); | |
4919 | elf_next_in_group (unwi) = unw; | |
4920 | } | |
4921 | else | |
4922 | { | |
4923 | elf_next_in_group (unw) = sec; | |
4924 | elf_next_in_group (sec) = unw; | |
4925 | } | |
4926 | elf_sec_group (unw) = group; | |
4927 | } | |
4928 | ||
4929 | /* Fake SHT_GROUP section header. */ | |
4930 | elf_section_data (group)->this_hdr.bfd_section = group; | |
4931 | elf_section_data (group)->this_hdr.sh_type = SHT_GROUP; | |
4932 | } | |
4933 | } | |
4934 | return TRUE; | |
4935 | } | |
4936 | ||
4937 | static bfd_boolean | |
4938 | elfNN_ia64_hpux_vec (const bfd_target *vec) | |
4939 | { | |
4940 | extern const bfd_target bfd_elfNN_ia64_hpux_big_vec; | |
4941 | return (vec == & bfd_elfNN_ia64_hpux_big_vec); | |
4942 | } | |
4943 | ||
4944 | static void | |
4945 | elfNN_hpux_post_process_headers (bfd *abfd, | |
4946 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
4947 | { | |
4948 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
4949 | ||
4950 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
4951 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
4952 | } | |
4953 | ||
4954 | static bfd_boolean | |
4955 | elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, | |
4956 | asection *sec, int *retval) | |
4957 | { | |
4958 | if (bfd_is_com_section (sec)) | |
4959 | { | |
4960 | *retval = SHN_IA_64_ANSI_COMMON; | |
4961 | return TRUE; | |
4962 | } | |
4963 | return FALSE; | |
4964 | } | |
4965 | ||
4966 | static void | |
4967 | elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
4968 | asymbol *asym) | |
4969 | { | |
4970 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
4971 | ||
4972 | switch (elfsym->internal_elf_sym.st_shndx) | |
4973 | { | |
4974 | case SHN_IA_64_ANSI_COMMON: | |
4975 | asym->section = bfd_com_section_ptr; | |
4976 | asym->value = elfsym->internal_elf_sym.st_size; | |
4977 | asym->flags &= ~BSF_GLOBAL; | |
4978 | break; | |
4979 | } | |
4980 | } | |
4981 | ||
4982 | #ifdef INCLUDE_IA64_VMS | |
4983 | ||
4984 | static bfd_boolean | |
4985 | elfNN_vms_section_from_shdr (bfd *abfd, | |
4986 | Elf_Internal_Shdr *hdr, | |
4987 | const char *name, | |
4988 | int shindex) | |
4989 | { | |
4990 | switch (hdr->sh_type) | |
4991 | { | |
4992 | case SHT_IA_64_VMS_TRACE: | |
4993 | case SHT_IA_64_VMS_DEBUG: | |
4994 | case SHT_IA_64_VMS_DEBUG_STR: | |
4995 | break; | |
4996 | ||
4997 | default: | |
4998 | return elfNN_ia64_section_from_shdr (abfd, hdr, name, shindex); | |
4999 | } | |
5000 | ||
5001 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
5002 | return FALSE; | |
5003 | ||
5004 | return TRUE; | |
5005 | } | |
5006 | ||
5007 | static bfd_boolean | |
5008 | elfNN_vms_object_p (bfd *abfd) | |
5009 | { | |
5010 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
5011 | Elf_Internal_Phdr *i_phdr = elf_tdata (abfd)->phdr; | |
5012 | unsigned int i; | |
5013 | unsigned int num_text = 0; | |
5014 | unsigned int num_data = 0; | |
5015 | unsigned int num_rodata = 0; | |
5016 | char name[16]; | |
5017 | ||
5018 | if (!elfNN_ia64_object_p (abfd)) | |
5019 | return FALSE; | |
5020 | ||
5021 | for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++) | |
5022 | { | |
5023 | /* Is there a section for this segment? */ | |
5024 | bfd_vma base_vma = i_phdr->p_vaddr; | |
5025 | bfd_vma limit_vma = base_vma + i_phdr->p_filesz; | |
5026 | ||
5027 | if (i_phdr->p_type != PT_LOAD) | |
5028 | continue; | |
5029 | ||
5030 | again: | |
5031 | while (base_vma < limit_vma) | |
5032 | { | |
5033 | bfd_vma next_vma = limit_vma; | |
5034 | asection *nsec; | |
5035 | asection *sec; | |
5036 | flagword flags; | |
5037 | char *nname = NULL; | |
5038 | ||
5039 | /* Find a section covering base_vma. */ | |
5040 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
5041 | { | |
5042 | if ((sec->flags & (SEC_ALLOC | SEC_LOAD)) == 0) | |
5043 | continue; | |
5044 | if (sec->vma <= base_vma && sec->vma + sec->size > base_vma) | |
5045 | { | |
5046 | base_vma = sec->vma + sec->size; | |
5047 | goto again; | |
5048 | } | |
5049 | if (sec->vma < next_vma && sec->vma + sec->size >= base_vma) | |
5050 | next_vma = sec->vma; | |
5051 | } | |
5052 | ||
5053 | /* No section covering [base_vma; next_vma). Create a fake one. */ | |
5054 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
5055 | if (i_phdr->p_flags & PF_X) | |
5056 | { | |
5057 | flags |= SEC_CODE; | |
5058 | if (num_text++ == 0) | |
5059 | nname = ".text"; | |
5060 | else | |
5061 | sprintf (name, ".text$%u", num_text); | |
5062 | } | |
5063 | else if ((i_phdr->p_flags & (PF_R | PF_W)) == PF_R) | |
5064 | { | |
5065 | flags |= SEC_READONLY; | |
5066 | sprintf (name, ".rodata$%u", num_rodata++); | |
5067 | } | |
5068 | else | |
5069 | { | |
5070 | flags |= SEC_DATA; | |
5071 | sprintf (name, ".data$%u", num_data++); | |
5072 | } | |
5073 | ||
5074 | /* Allocate name. */ | |
5075 | if (nname == NULL) | |
5076 | { | |
5077 | size_t name_len = strlen (name) + 1; | |
5078 | nname = bfd_alloc (abfd, name_len); | |
5079 | if (nname == NULL) | |
5080 | return FALSE; | |
5081 | memcpy (nname, name, name_len); | |
5082 | } | |
5083 | ||
5084 | /* Create and fill new section. */ | |
5085 | nsec = bfd_make_section_anyway_with_flags (abfd, nname, flags); | |
5086 | if (nsec == NULL) | |
5087 | return FALSE; | |
5088 | nsec->vma = base_vma; | |
5089 | nsec->size = next_vma - base_vma; | |
5090 | nsec->filepos = i_phdr->p_offset + (base_vma - i_phdr->p_vaddr); | |
d17fe7b7 | 5091 | |
cbe79dfe TG |
5092 | base_vma = next_vma; |
5093 | } | |
5094 | } | |
5095 | return TRUE; | |
5096 | } | |
5097 | ||
5098 | static void | |
5099 | elfNN_vms_post_process_headers (bfd *abfd, | |
5100 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
5101 | { | |
5102 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
5103 | ||
5104 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_OPENVMS; | |
5105 | i_ehdrp->e_ident[EI_ABIVERSION] = 2; | |
5106 | } | |
5107 | ||
5108 | static bfd_boolean | |
5109 | elfNN_vms_section_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
5110 | Elf_Internal_Shdr *hdr) | |
5111 | { | |
5112 | if (hdr->bfd_section != NULL) | |
5113 | { | |
5114 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
5115 | ||
5116 | if (strcmp (name, ".text") == 0) | |
5117 | hdr->sh_flags |= SHF_IA_64_VMS_SHARED; | |
5118 | else if ((strcmp (name, ".debug") == 0) | |
5119 | || (strcmp (name, ".debug_abbrev") == 0) | |
5120 | || (strcmp (name, ".debug_aranges") == 0) | |
5121 | || (strcmp (name, ".debug_frame") == 0) | |
5122 | || (strcmp (name, ".debug_info") == 0) | |
5123 | || (strcmp (name, ".debug_loc") == 0) | |
5124 | || (strcmp (name, ".debug_macinfo") == 0) | |
5125 | || (strcmp (name, ".debug_pubnames") == 0) | |
5126 | || (strcmp (name, ".debug_pubtypes") == 0)) | |
5127 | hdr->sh_type = SHT_IA_64_VMS_DEBUG; | |
5128 | else if ((strcmp (name, ".debug_line") == 0) | |
5129 | || (strcmp (name, ".debug_ranges") == 0)) | |
5130 | hdr->sh_type = SHT_IA_64_VMS_TRACE; | |
5131 | else if (strcmp (name, ".debug_str") == 0) | |
5132 | hdr->sh_type = SHT_IA_64_VMS_DEBUG_STR; | |
5133 | else if (strcmp (name, ".vms_display_name_info") == 0) | |
5134 | { | |
5135 | int idx, symcount; | |
5136 | asymbol **syms; | |
5137 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
5138 | int buf[2]; | |
5139 | int demangler_sym_idx = -1; | |
5140 | ||
5141 | symcount = bfd_get_symcount (abfd); | |
5142 | syms = bfd_get_outsymbols (abfd); | |
5143 | for (idx = 0; idx < symcount; idx++) | |
5144 | { | |
5145 | asymbol *sym; | |
5146 | sym = syms[idx]; | |
5147 | if ((sym->flags & (BSF_DEBUGGING | BSF_DYNAMIC)) | |
5148 | && strchr (sym->name, '@') | |
5149 | && (strcmp (sym->section->name, BFD_ABS_SECTION_NAME) == 0)) | |
5150 | { | |
5151 | demangler_sym_idx = sym->udata.i; | |
5152 | break; | |
5153 | } | |
5154 | } | |
5155 | ||
5156 | hdr->sh_type = SHT_IA_64_VMS_DISPLAY_NAME_INFO; | |
5157 | hdr->sh_entsize = 4; | |
5158 | hdr->sh_addralign = 0; | |
5159 | hdr->sh_link = t->symtab_section; | |
5160 | ||
5161 | /* Find symtab index of demangler routine and stuff it in | |
5162 | the second long word of section data. */ | |
5163 | ||
5164 | if (demangler_sym_idx > -1) | |
5165 | { | |
5166 | bfd_seek (abfd, hdr->sh_offset, SEEK_SET); | |
5167 | bfd_bread (buf, hdr->sh_size, abfd); | |
5168 | buf [1] = demangler_sym_idx; | |
5169 | bfd_seek (abfd, hdr->sh_offset, SEEK_SET); | |
5170 | bfd_bwrite (buf, hdr->sh_size, abfd); | |
5171 | } | |
5172 | } | |
5173 | } | |
5174 | ||
5175 | return TRUE; | |
5176 | } | |
5177 | ||
5178 | /* The final processing done just before writing out a VMS IA-64 ELF | |
5179 | object file. */ | |
5180 | ||
5181 | static void | |
5182 | elfNN_vms_final_write_processing (bfd *abfd, | |
5183 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
5184 | { | |
5185 | Elf_Internal_Shdr *hdr; | |
5186 | asection *s; | |
5187 | int unwind_info_sect_idx = 0; | |
5188 | ||
5189 | for (s = abfd->sections; s; s = s->next) | |
5190 | { | |
5191 | hdr = &elf_section_data (s)->this_hdr; | |
5192 | ||
5193 | if (strcmp (bfd_get_section_name (abfd, hdr->bfd_section), | |
5194 | ".IA_64.unwind_info") == 0) | |
5195 | unwind_info_sect_idx = elf_section_data (s)->this_idx; | |
5196 | ||
5197 | switch (hdr->sh_type) | |
5198 | { | |
5199 | case SHT_IA_64_UNWIND: | |
5200 | /* VMS requires sh_info to point to the unwind info section. */ | |
5201 | hdr->sh_info = unwind_info_sect_idx; | |
5202 | break; | |
5203 | } | |
5204 | } | |
5205 | ||
5206 | if (! elf_flags_init (abfd)) | |
5207 | { | |
5208 | unsigned long flags = 0; | |
5209 | ||
5210 | if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) | |
5211 | flags |= EF_IA_64_BE; | |
5212 | if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) | |
5213 | flags |= EF_IA_64_ABI64; | |
5214 | ||
5215 | elf_elfheader(abfd)->e_flags = flags; | |
5216 | elf_flags_init (abfd) = TRUE; | |
5217 | } | |
5218 | } | |
5219 | ||
5220 | static bfd_boolean | |
5221 | elfNN_vms_close_and_cleanup (bfd *abfd) | |
5222 | { | |
5223 | if (bfd_get_format (abfd) == bfd_object) | |
5224 | { | |
5225 | long isize, irsize; | |
5226 | ||
5227 | if (elf_shstrtab (abfd) != NULL) | |
5228 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); | |
5229 | ||
5230 | /* Pad to 8 byte boundary for IPF/VMS. */ | |
5231 | isize = bfd_get_size (abfd); | |
5232 | if ((irsize = isize/8*8) < isize) | |
5233 | { | |
5234 | int ishort = (irsize + 8) - isize; | |
5235 | bfd_seek (abfd, isize, SEEK_SET); | |
5236 | bfd_bwrite (bfd_zmalloc (ishort), ishort, abfd); | |
5237 | } | |
5238 | } | |
5239 | ||
5240 | return _bfd_generic_close_and_cleanup (abfd); | |
5241 | } | |
5242 | #endif /* INCLUDE_IA64_VMS */ | |
5243 | \f | |
5244 | #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec | |
5245 | #define TARGET_LITTLE_NAME "elfNN-ia64-little" | |
5246 | #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec | |
5247 | #define TARGET_BIG_NAME "elfNN-ia64-big" | |
5248 | #define ELF_ARCH bfd_arch_ia64 | |
5249 | #define ELF_TARGET_ID IA64_ELF_DATA | |
5250 | #define ELF_MACHINE_CODE EM_IA_64 | |
5251 | #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */ | |
5252 | #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */ | |
5253 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ | |
5254 | #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */ | |
5255 | ||
5256 | #define elf_backend_section_from_shdr \ | |
5257 | elfNN_ia64_section_from_shdr | |
5258 | #define elf_backend_section_flags \ | |
5259 | elfNN_ia64_section_flags | |
5260 | #define elf_backend_fake_sections \ | |
5261 | elfNN_ia64_fake_sections | |
5262 | #define elf_backend_final_write_processing \ | |
5263 | elfNN_ia64_final_write_processing | |
5264 | #define elf_backend_add_symbol_hook \ | |
5265 | elfNN_ia64_add_symbol_hook | |
5266 | #define elf_backend_additional_program_headers \ | |
5267 | elfNN_ia64_additional_program_headers | |
5268 | #define elf_backend_modify_segment_map \ | |
5269 | elfNN_ia64_modify_segment_map | |
5270 | #define elf_backend_modify_program_headers \ | |
5271 | elfNN_ia64_modify_program_headers | |
5272 | #define elf_info_to_howto \ | |
5273 | elfNN_ia64_info_to_howto | |
5274 | ||
5275 | #define bfd_elfNN_bfd_reloc_type_lookup \ | |
5276 | ia64_elf_reloc_type_lookup | |
5277 | #define bfd_elfNN_bfd_reloc_name_lookup \ | |
5278 | ia64_elf_reloc_name_lookup | |
5279 | #define bfd_elfNN_bfd_is_local_label_name \ | |
5280 | elfNN_ia64_is_local_label_name | |
5281 | #define bfd_elfNN_bfd_relax_section \ | |
5282 | elfNN_ia64_relax_section | |
5283 | ||
5284 | #define elf_backend_object_p \ | |
5285 | elfNN_ia64_object_p | |
5286 | ||
5287 | /* Stuff for the BFD linker: */ | |
5288 | #define bfd_elfNN_bfd_link_hash_table_create \ | |
5289 | elfNN_ia64_hash_table_create | |
5290 | #define bfd_elfNN_bfd_link_hash_table_free \ | |
5291 | elfNN_ia64_hash_table_free | |
5292 | #define elf_backend_create_dynamic_sections \ | |
5293 | elfNN_ia64_create_dynamic_sections | |
5294 | #define elf_backend_check_relocs \ | |
5295 | elfNN_ia64_check_relocs | |
5296 | #define elf_backend_adjust_dynamic_symbol \ | |
5297 | elfNN_ia64_adjust_dynamic_symbol | |
5298 | #define elf_backend_size_dynamic_sections \ | |
5299 | elfNN_ia64_size_dynamic_sections | |
5300 | #define elf_backend_omit_section_dynsym \ | |
5301 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
5302 | #define elf_backend_relocate_section \ | |
5303 | elfNN_ia64_relocate_section | |
5304 | #define elf_backend_finish_dynamic_symbol \ | |
5305 | elfNN_ia64_finish_dynamic_symbol | |
5306 | #define elf_backend_finish_dynamic_sections \ | |
5307 | elfNN_ia64_finish_dynamic_sections | |
5308 | #define bfd_elfNN_bfd_final_link \ | |
5309 | elfNN_ia64_final_link | |
5310 | ||
5311 | #define bfd_elfNN_bfd_merge_private_bfd_data \ | |
5312 | elfNN_ia64_merge_private_bfd_data | |
5313 | #define bfd_elfNN_bfd_set_private_flags \ | |
5314 | elfNN_ia64_set_private_flags | |
5315 | #define bfd_elfNN_bfd_print_private_bfd_data \ | |
5316 | elfNN_ia64_print_private_bfd_data | |
5317 | ||
5318 | #define elf_backend_plt_readonly 1 | |
5319 | #define elf_backend_want_plt_sym 0 | |
5320 | #define elf_backend_plt_alignment 5 | |
5321 | #define elf_backend_got_header_size 0 | |
5322 | #define elf_backend_want_got_plt 1 | |
5323 | #define elf_backend_may_use_rel_p 1 | |
5324 | #define elf_backend_may_use_rela_p 1 | |
5325 | #define elf_backend_default_use_rela_p 1 | |
5326 | #define elf_backend_want_dynbss 0 | |
5327 | #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect | |
5328 | #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol | |
5329 | #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol | |
5330 | #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class | |
5331 | #define elf_backend_rela_normal 1 | |
5332 | #define elf_backend_special_sections elfNN_ia64_special_sections | |
5333 | #define elf_backend_default_execstack 0 | |
5334 | ||
5335 | /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with | |
5336 | SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields. | |
5337 | We don't want to flood users with so many error messages. We turn | |
5338 | off the warning for now. It will be turned on later when the Intel | |
5339 | compiler is fixed. */ | |
5340 | #define elf_backend_link_order_error_handler NULL | |
5341 | ||
5342 | #include "elfNN-target.h" | |
5343 | ||
5344 | /* HPUX-specific vectors. */ | |
5345 | ||
5346 | #undef TARGET_LITTLE_SYM | |
5347 | #undef TARGET_LITTLE_NAME | |
5348 | #undef TARGET_BIG_SYM | |
5349 | #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec | |
5350 | #undef TARGET_BIG_NAME | |
5351 | #define TARGET_BIG_NAME "elfNN-ia64-hpux-big" | |
5352 | ||
5353 | /* These are HP-UX specific functions. */ | |
5354 | ||
5355 | #undef elf_backend_post_process_headers | |
5356 | #define elf_backend_post_process_headers elfNN_hpux_post_process_headers | |
5357 | ||
5358 | #undef elf_backend_section_from_bfd_section | |
5359 | #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section | |
5360 | ||
5361 | #undef elf_backend_symbol_processing | |
5362 | #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing | |
5363 | ||
5364 | #undef elf_backend_want_p_paddr_set_to_zero | |
5365 | #define elf_backend_want_p_paddr_set_to_zero 1 | |
5366 | ||
5367 | #undef ELF_COMMONPAGESIZE | |
5368 | #undef ELF_OSABI | |
5369 | #define ELF_OSABI ELFOSABI_HPUX | |
5370 | ||
5371 | #undef elfNN_bed | |
5372 | #define elfNN_bed elfNN_ia64_hpux_bed | |
5373 | ||
5374 | #include "elfNN-target.h" | |
5375 | ||
5376 | /* VMS-specific vectors. */ | |
5377 | #ifdef INCLUDE_IA64_VMS | |
5378 | ||
5379 | #undef TARGET_LITTLE_SYM | |
5380 | #define TARGET_LITTLE_SYM bfd_elfNN_ia64_vms_vec | |
5381 | #undef TARGET_LITTLE_NAME | |
5382 | #define TARGET_LITTLE_NAME "elfNN-ia64-vms" | |
5383 | #undef TARGET_BIG_SYM | |
5384 | #undef TARGET_BIG_NAME | |
5385 | ||
5386 | /* These are VMS specific functions. */ | |
5387 | ||
5388 | #undef elf_backend_object_p | |
5389 | #define elf_backend_object_p elfNN_vms_object_p | |
5390 | ||
5391 | #undef elf_backend_section_from_shdr | |
5392 | #define elf_backend_section_from_shdr elfNN_vms_section_from_shdr | |
5393 | ||
5394 | #undef elf_backend_post_process_headers | |
5395 | #define elf_backend_post_process_headers elfNN_vms_post_process_headers | |
5396 | ||
5397 | #undef elf_backend_section_processing | |
5398 | #define elf_backend_section_processing elfNN_vms_section_processing | |
5399 | ||
5400 | #undef elf_backend_final_write_processing | |
5401 | #define elf_backend_final_write_processing elfNN_vms_final_write_processing | |
5402 | ||
5403 | #undef bfd_elfNN_close_and_cleanup | |
5404 | #define bfd_elfNN_close_and_cleanup elfNN_vms_close_and_cleanup | |
5405 | ||
5406 | #undef elf_backend_section_from_bfd_section | |
5407 | ||
5408 | #undef elf_backend_symbol_processing | |
5409 | ||
5410 | #undef elf_backend_want_p_paddr_set_to_zero | |
5411 | ||
5412 | #undef ELF_OSABI | |
5413 | #define ELF_OSABI ELFOSABI_OPENVMS | |
5414 | ||
5415 | #undef ELF_MAXPAGESIZE | |
5416 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ | |
5417 | ||
5418 | #undef elfNN_bed | |
5419 | #define elfNN_bed elfNN_ia64_vms_bed | |
5420 | ||
5421 | /* Use VMS-style archives (in particular, don't use the standard coff | |
5422 | archive format). */ | |
5423 | #define bfd_elfNN_archive_functions | |
5424 | ||
5425 | #undef bfd_elfNN_archive_p | |
5426 | #define bfd_elfNN_archive_p _bfd_vms_lib_ia64_archive_p | |
5427 | #undef bfd_elfNN_write_archive_contents | |
5428 | #define bfd_elfNN_write_archive_contents _bfd_vms_lib_write_archive_contents | |
5429 | #undef bfd_elfNN_mkarchive | |
5430 | #define bfd_elfNN_mkarchive _bfd_vms_lib_ia64_mkarchive | |
5431 | ||
5432 | #define bfd_elfNN_archive_slurp_armap \ | |
5433 | _bfd_vms_lib_slurp_armap | |
5434 | #define bfd_elfNN_archive_slurp_extended_name_table \ | |
5435 | _bfd_vms_lib_slurp_extended_name_table | |
5436 | #define bfd_elfNN_archive_construct_extended_name_table \ | |
5437 | _bfd_vms_lib_construct_extended_name_table | |
5438 | #define bfd_elfNN_archive_truncate_arname \ | |
5439 | _bfd_vms_lib_truncate_arname | |
5440 | #define bfd_elfNN_archive_write_armap \ | |
5441 | _bfd_vms_lib_write_armap | |
5442 | #define bfd_elfNN_archive_read_ar_hdr \ | |
5443 | _bfd_vms_lib_read_ar_hdr | |
5444 | #define bfd_elfNN_archive_write_ar_hdr \ | |
5445 | _bfd_vms_lib_write_ar_hdr | |
5446 | #define bfd_elfNN_archive_openr_next_archived_file \ | |
5447 | _bfd_vms_lib_openr_next_archived_file | |
5448 | #define bfd_elfNN_archive_get_elt_at_index \ | |
5449 | _bfd_vms_lib_get_elt_at_index | |
5450 | #define bfd_elfNN_archive_generic_stat_arch_elt \ | |
5451 | _bfd_vms_lib_generic_stat_arch_elt | |
5452 | #define bfd_elfNN_archive_update_armap_timestamp \ | |
5453 | _bfd_vms_lib_update_armap_timestamp | |
5454 | ||
5455 | #include "elfNN-target.h" | |
5456 | ||
5457 | #endif /* INCLUDE_IA64_VMS */ |