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202e2356 | 1 | /* IA-64 support for OpenVMS |
4b95cf5c | 2 | Copyright (C) 1998-2014 Free Software Foundation, Inc. |
202e2356 NC |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
19 | MA 02110-1301, USA. */ | |
20 | ||
21 | #include "sysdep.h" | |
22 | #include "bfd.h" | |
23 | #include "libbfd.h" | |
24 | #include "elf-bfd.h" | |
25 | #include "opcode/ia64.h" | |
26 | #include "elf/ia64.h" | |
27 | #include "objalloc.h" | |
28 | #include "hashtab.h" | |
29 | #include "elfxx-ia64.h" | |
30 | #include "vms.h" | |
31 | #include "bfdver.h" | |
32 | ||
33 | /* THE RULES for all the stuff the linker creates -- | |
34 | ||
35 | GOT Entries created in response to LTOFF or LTOFF_FPTR | |
36 | relocations. Dynamic relocs created for dynamic | |
37 | symbols in an application; REL relocs for locals | |
38 | in a shared library. | |
39 | ||
40 | FPTR The canonical function descriptor. Created for local | |
41 | symbols in applications. Descriptors for dynamic symbols | |
42 | and local symbols in shared libraries are created by | |
43 | ld.so. Thus there are no dynamic relocs against these | |
44 | objects. The FPTR relocs for such _are_ passed through | |
45 | to the dynamic relocation tables. | |
46 | ||
47 | FULL_PLT Created for a PCREL21B relocation against a dynamic symbol. | |
48 | Requires the creation of a PLTOFF entry. This does not | |
49 | require any dynamic relocations. | |
50 | ||
51 | PLTOFF Created by PLTOFF relocations. For local symbols, this | |
52 | is an alternate function descriptor, and in shared libraries | |
53 | requires two REL relocations. Note that this cannot be | |
54 | transformed into an FPTR relocation, since it must be in | |
55 | range of the GP. For dynamic symbols, this is a function | |
56 | descriptor. */ | |
57 | ||
58 | typedef struct bfd_hash_entry *(*new_hash_entry_func) | |
59 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); | |
60 | ||
61 | /* In dynamically (linker-) created sections, we generally need to keep track | |
62 | of the place a symbol or expression got allocated to. This is done via hash | |
63 | tables that store entries of the following type. */ | |
64 | ||
65 | struct elf64_ia64_dyn_sym_info | |
66 | { | |
67 | /* The addend for which this entry is relevant. */ | |
68 | bfd_vma addend; | |
69 | ||
70 | bfd_vma got_offset; | |
71 | bfd_vma fptr_offset; | |
72 | bfd_vma pltoff_offset; | |
73 | bfd_vma plt_offset; | |
74 | bfd_vma plt2_offset; | |
75 | ||
76 | /* The symbol table entry, if any, that this was derived from. */ | |
77 | struct elf_link_hash_entry *h; | |
78 | ||
79 | /* Used to count non-got, non-plt relocations for delayed sizing | |
80 | of relocation sections. */ | |
81 | struct elf64_ia64_dyn_reloc_entry | |
82 | { | |
83 | struct elf64_ia64_dyn_reloc_entry *next; | |
84 | asection *srel; | |
85 | int type; | |
86 | int count; | |
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 | ||
94 | /* TRUE for the different kinds of linker data we want created. */ | |
95 | unsigned want_got : 1; | |
96 | unsigned want_gotx : 1; | |
97 | unsigned want_fptr : 1; | |
98 | unsigned want_ltoff_fptr : 1; | |
99 | unsigned want_plt : 1; /* A MIN_PLT entry. */ | |
100 | unsigned want_plt2 : 1; /* A FULL_PLT. */ | |
101 | unsigned want_pltoff : 1; | |
102 | }; | |
103 | ||
104 | struct elf64_ia64_local_hash_entry | |
105 | { | |
106 | int id; | |
107 | unsigned int r_sym; | |
108 | /* The number of elements in elf64_ia64_dyn_sym_info array. */ | |
109 | unsigned int count; | |
110 | /* The number of sorted elements in elf64_ia64_dyn_sym_info array. */ | |
111 | unsigned int sorted_count; | |
112 | /* The size of elf64_ia64_dyn_sym_info array. */ | |
113 | unsigned int size; | |
114 | /* The array of elf64_ia64_dyn_sym_info. */ | |
115 | struct elf64_ia64_dyn_sym_info *info; | |
116 | ||
117 | /* TRUE if this hash entry's addends was translated for | |
118 | SHF_MERGE optimization. */ | |
119 | unsigned sec_merge_done : 1; | |
120 | }; | |
121 | ||
122 | struct elf64_ia64_link_hash_entry | |
123 | { | |
124 | struct elf_link_hash_entry root; | |
125 | ||
126 | /* Set if this symbol is defined in a shared library. | |
127 | We can't use root.u.def.section->owner as the symbol is an absolute | |
128 | symbol. */ | |
129 | bfd *shl; | |
130 | ||
131 | /* The number of elements in elf64_ia64_dyn_sym_info array. */ | |
132 | unsigned int count; | |
133 | /* The number of sorted elements in elf64_ia64_dyn_sym_info array. */ | |
134 | unsigned int sorted_count; | |
135 | /* The size of elf64_ia64_dyn_sym_info array. */ | |
136 | unsigned int size; | |
137 | /* The array of elf64_ia64_dyn_sym_info. */ | |
138 | struct elf64_ia64_dyn_sym_info *info; | |
139 | }; | |
140 | ||
141 | struct elf64_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 *fixups_sec; /* Fixups section. */ | |
150 | asection *transfer_sec; /* Transfer vector section. */ | |
151 | asection *note_sec; /* .note section. */ | |
152 | ||
153 | /* There are maybe R_IA64_GPREL22 relocations, including those | |
154 | optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT | |
155 | sections. We need to record those sections so that we can choose | |
156 | a proper GP to cover all R_IA64_GPREL22 relocations. */ | |
157 | asection *max_short_sec; /* Maximum short output section. */ | |
158 | bfd_vma max_short_offset; /* Maximum short offset. */ | |
159 | asection *min_short_sec; /* Minimum short output section. */ | |
160 | bfd_vma min_short_offset; /* Minimum short offset. */ | |
161 | ||
162 | htab_t loc_hash_table; | |
163 | void *loc_hash_memory; | |
164 | }; | |
165 | ||
166 | struct elf64_ia64_allocate_data | |
167 | { | |
168 | struct bfd_link_info *info; | |
169 | bfd_size_type ofs; | |
170 | }; | |
171 | ||
172 | #define elf64_ia64_hash_table(p) \ | |
173 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
174 | == IA64_ELF_DATA ? ((struct elf64_ia64_link_hash_table *) ((p)->hash)) : NULL) | |
175 | ||
176 | struct elf64_ia64_vms_obj_tdata | |
177 | { | |
178 | struct elf_obj_tdata root; | |
179 | ||
180 | /* Ident for shared library. */ | |
181 | bfd_uint64_t ident; | |
182 | ||
183 | /* Used only during link: offset in the .fixups section for this bfd. */ | |
184 | bfd_vma fixups_off; | |
185 | ||
186 | /* Max number of shared libraries. */ | |
187 | unsigned int needed_count; | |
188 | }; | |
189 | ||
190 | #define elf_ia64_vms_tdata(abfd) \ | |
191 | ((struct elf64_ia64_vms_obj_tdata *)((abfd)->tdata.any)) | |
192 | #define elf_ia64_vms_ident(abfd) (elf_ia64_vms_tdata(abfd)->ident) | |
193 | ||
194 | struct elf64_vms_transfer | |
195 | { | |
196 | unsigned char size[4]; | |
197 | unsigned char spare[4]; | |
198 | unsigned char tfradr1[8]; | |
199 | unsigned char tfradr2[8]; | |
200 | unsigned char tfradr3[8]; | |
201 | unsigned char tfradr4[8]; | |
202 | unsigned char tfradr5[8]; | |
203 | ||
204 | /* Local function descriptor for tfr3. */ | |
205 | unsigned char tfr3_func[8]; | |
206 | unsigned char tfr3_gp[8]; | |
207 | }; | |
208 | ||
209 | typedef struct | |
210 | { | |
211 | Elf64_External_Ehdr ehdr; | |
212 | unsigned char vms_needed_count[8]; | |
213 | } Elf64_External_VMS_Ehdr; | |
214 | ||
215 | static struct elf64_ia64_dyn_sym_info * get_dyn_sym_info | |
216 | (struct elf64_ia64_link_hash_table *, | |
217 | struct elf_link_hash_entry *, | |
218 | bfd *, const Elf_Internal_Rela *, bfd_boolean); | |
219 | static bfd_boolean elf64_ia64_dynamic_symbol_p | |
220 | (struct elf_link_hash_entry *); | |
221 | static bfd_boolean elf64_ia64_choose_gp | |
222 | (bfd *, struct bfd_link_info *, bfd_boolean); | |
223 | static void elf64_ia64_dyn_sym_traverse | |
224 | (struct elf64_ia64_link_hash_table *, | |
225 | bfd_boolean (*) (struct elf64_ia64_dyn_sym_info *, void *), | |
226 | void *); | |
227 | static bfd_boolean allocate_global_data_got | |
228 | (struct elf64_ia64_dyn_sym_info *, void *); | |
229 | static bfd_boolean allocate_global_fptr_got | |
230 | (struct elf64_ia64_dyn_sym_info *, void *); | |
231 | static bfd_boolean allocate_local_got | |
232 | (struct elf64_ia64_dyn_sym_info *, void *); | |
233 | static bfd_boolean allocate_dynrel_entries | |
234 | (struct elf64_ia64_dyn_sym_info *, void *); | |
235 | static asection *get_pltoff | |
236 | (bfd *, struct elf64_ia64_link_hash_table *); | |
237 | static asection *get_got | |
238 | (bfd *, struct elf64_ia64_link_hash_table *); | |
239 | ||
240 | ||
241 | /* Given a ELF reloc, return the matching HOWTO structure. */ | |
242 | ||
243 | static void | |
244 | elf64_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
245 | arelent *bfd_reloc, | |
246 | Elf_Internal_Rela *elf_reloc) | |
247 | { | |
248 | bfd_reloc->howto | |
249 | = ia64_elf_lookup_howto ((unsigned int) ELF64_R_TYPE (elf_reloc->r_info)); | |
250 | } | |
251 | ||
252 | ||
253 | #define PLT_FULL_ENTRY_SIZE (2 * 16) | |
254 | ||
255 | static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] = | |
256 | { | |
257 | 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */ | |
258 | 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/ | |
259 | 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */ | |
260 | 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */ | |
261 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ | |
262 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ | |
263 | }; | |
264 | ||
265 | static const bfd_byte oor_brl[16] = | |
266 | { | |
267 | 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ | |
268 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;;*/ | |
269 | 0x00, 0x00, 0x00, 0xc0 | |
270 | }; | |
271 | ||
272 | ||
273 | /* These functions do relaxation for IA-64 ELF. */ | |
274 | ||
275 | /* Rename some of the generic section flags to better document how they | |
276 | are used here. */ | |
277 | #define skip_relax_pass_0 sec_flg0 | |
278 | #define skip_relax_pass_1 sec_flg1 | |
279 | ||
280 | static void | |
281 | elf64_ia64_update_short_info (asection *sec, bfd_vma offset, | |
282 | struct elf64_ia64_link_hash_table *ia64_info) | |
283 | { | |
284 | /* Skip ABS and SHF_IA_64_SHORT sections. */ | |
285 | if (sec == bfd_abs_section_ptr | |
286 | || (sec->flags & SEC_SMALL_DATA) != 0) | |
287 | return; | |
288 | ||
289 | if (!ia64_info->min_short_sec) | |
290 | { | |
291 | ia64_info->max_short_sec = sec; | |
292 | ia64_info->max_short_offset = offset; | |
293 | ia64_info->min_short_sec = sec; | |
294 | ia64_info->min_short_offset = offset; | |
295 | } | |
296 | else if (sec == ia64_info->max_short_sec | |
297 | && offset > ia64_info->max_short_offset) | |
298 | ia64_info->max_short_offset = offset; | |
299 | else if (sec == ia64_info->min_short_sec | |
300 | && offset < ia64_info->min_short_offset) | |
301 | ia64_info->min_short_offset = offset; | |
302 | else if (sec->output_section->vma | |
303 | > ia64_info->max_short_sec->vma) | |
304 | { | |
305 | ia64_info->max_short_sec = sec; | |
306 | ia64_info->max_short_offset = offset; | |
307 | } | |
308 | else if (sec->output_section->vma | |
309 | < ia64_info->min_short_sec->vma) | |
310 | { | |
311 | ia64_info->min_short_sec = sec; | |
312 | ia64_info->min_short_offset = offset; | |
313 | } | |
314 | } | |
315 | ||
316 | /* Use a two passes algorithm. In the first pass, branches are relaxed | |
317 | (which may increase the size of the section). In the second pass, | |
318 | the other relaxations are done. | |
319 | */ | |
320 | ||
321 | static bfd_boolean | |
322 | elf64_ia64_relax_section (bfd *abfd, asection *sec, | |
323 | struct bfd_link_info *link_info, | |
324 | bfd_boolean *again) | |
325 | { | |
326 | struct one_fixup | |
327 | { | |
328 | struct one_fixup *next; | |
329 | asection *tsec; | |
330 | bfd_vma toff; | |
331 | bfd_vma trampoff; | |
332 | }; | |
333 | ||
334 | Elf_Internal_Shdr *symtab_hdr; | |
335 | Elf_Internal_Rela *internal_relocs; | |
336 | Elf_Internal_Rela *irel, *irelend; | |
337 | bfd_byte *contents; | |
338 | Elf_Internal_Sym *isymbuf = NULL; | |
339 | struct elf64_ia64_link_hash_table *ia64_info; | |
340 | struct one_fixup *fixups = NULL; | |
341 | bfd_boolean changed_contents = FALSE; | |
342 | bfd_boolean changed_relocs = FALSE; | |
343 | bfd_boolean skip_relax_pass_0 = TRUE; | |
344 | bfd_boolean skip_relax_pass_1 = TRUE; | |
345 | bfd_vma gp = 0; | |
346 | ||
347 | /* Assume we're not going to change any sizes, and we'll only need | |
348 | one pass. */ | |
349 | *again = FALSE; | |
350 | ||
351 | if (link_info->relocatable) | |
352 | (*link_info->callbacks->einfo) | |
353 | (_("%P%F: --relax and -r may not be used together\n")); | |
354 | ||
355 | /* Don't even try to relax for non-ELF outputs. */ | |
356 | if (!is_elf_hash_table (link_info->hash)) | |
357 | return FALSE; | |
358 | ||
359 | /* Nothing to do if there are no relocations or there is no need for | |
360 | the current pass. */ | |
361 | if ((sec->flags & SEC_RELOC) == 0 | |
362 | || sec->reloc_count == 0 | |
363 | || (link_info->relax_pass == 0 && sec->skip_relax_pass_0) | |
364 | || (link_info->relax_pass == 1 && sec->skip_relax_pass_1)) | |
365 | return TRUE; | |
366 | ||
367 | ia64_info = elf64_ia64_hash_table (link_info); | |
368 | if (ia64_info == NULL) | |
369 | return FALSE; | |
370 | ||
371 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
372 | ||
373 | /* Load the relocations for this section. */ | |
374 | internal_relocs = (_bfd_elf_link_read_relocs | |
375 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, | |
376 | link_info->keep_memory)); | |
377 | if (internal_relocs == NULL) | |
378 | return FALSE; | |
379 | ||
380 | irelend = internal_relocs + sec->reloc_count; | |
381 | ||
382 | /* Get the section contents. */ | |
383 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
384 | contents = elf_section_data (sec)->this_hdr.contents; | |
385 | else | |
386 | { | |
387 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
388 | goto error_return; | |
389 | } | |
390 | ||
391 | for (irel = internal_relocs; irel < irelend; irel++) | |
392 | { | |
393 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
394 | bfd_vma symaddr, reladdr, trampoff, toff, roff; | |
395 | asection *tsec; | |
396 | struct one_fixup *f; | |
397 | bfd_size_type amt; | |
398 | bfd_boolean is_branch; | |
399 | struct elf64_ia64_dyn_sym_info *dyn_i; | |
400 | ||
401 | switch (r_type) | |
402 | { | |
403 | case R_IA64_PCREL21B: | |
404 | case R_IA64_PCREL21BI: | |
405 | case R_IA64_PCREL21M: | |
406 | case R_IA64_PCREL21F: | |
407 | /* In pass 1, all br relaxations are done. We can skip it. */ | |
408 | if (link_info->relax_pass == 1) | |
409 | continue; | |
410 | skip_relax_pass_0 = FALSE; | |
411 | is_branch = TRUE; | |
412 | break; | |
413 | ||
414 | case R_IA64_PCREL60B: | |
415 | /* We can't optimize brl to br in pass 0 since br relaxations | |
416 | will increase the code size. Defer it to pass 1. */ | |
417 | if (link_info->relax_pass == 0) | |
418 | { | |
419 | skip_relax_pass_1 = FALSE; | |
420 | continue; | |
421 | } | |
422 | is_branch = TRUE; | |
423 | break; | |
424 | ||
425 | case R_IA64_GPREL22: | |
426 | /* Update max_short_sec/min_short_sec. */ | |
427 | ||
428 | case R_IA64_LTOFF22X: | |
429 | case R_IA64_LDXMOV: | |
430 | /* We can't relax ldx/mov in pass 0 since br relaxations will | |
431 | increase the code size. Defer it to pass 1. */ | |
432 | if (link_info->relax_pass == 0) | |
433 | { | |
434 | skip_relax_pass_1 = FALSE; | |
435 | continue; | |
436 | } | |
437 | is_branch = FALSE; | |
438 | break; | |
439 | ||
440 | default: | |
441 | continue; | |
442 | } | |
443 | ||
444 | /* Get the value of the symbol referred to by the reloc. */ | |
445 | if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
446 | { | |
447 | /* A local symbol. */ | |
448 | Elf_Internal_Sym *isym; | |
449 | ||
450 | /* Read this BFD's local symbols. */ | |
451 | if (isymbuf == NULL) | |
452 | { | |
453 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
454 | if (isymbuf == NULL) | |
455 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
456 | symtab_hdr->sh_info, 0, | |
457 | NULL, NULL, NULL); | |
458 | if (isymbuf == 0) | |
459 | goto error_return; | |
460 | } | |
461 | ||
462 | isym = isymbuf + ELF64_R_SYM (irel->r_info); | |
463 | if (isym->st_shndx == SHN_UNDEF) | |
464 | continue; /* We can't do anything with undefined symbols. */ | |
465 | else if (isym->st_shndx == SHN_ABS) | |
466 | tsec = bfd_abs_section_ptr; | |
467 | else if (isym->st_shndx == SHN_COMMON) | |
468 | tsec = bfd_com_section_ptr; | |
469 | else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON) | |
470 | tsec = bfd_com_section_ptr; | |
471 | else | |
472 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
473 | ||
474 | toff = isym->st_value; | |
475 | dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE); | |
476 | } | |
477 | else | |
478 | { | |
479 | unsigned long indx; | |
480 | struct elf_link_hash_entry *h; | |
481 | ||
482 | indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
483 | h = elf_sym_hashes (abfd)[indx]; | |
484 | BFD_ASSERT (h != NULL); | |
485 | ||
486 | while (h->root.type == bfd_link_hash_indirect | |
487 | || h->root.type == bfd_link_hash_warning) | |
488 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
489 | ||
490 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE); | |
491 | ||
492 | /* For branches to dynamic symbols, we're interested instead | |
493 | in a branch to the PLT entry. */ | |
494 | if (is_branch && dyn_i && dyn_i->want_plt2) | |
495 | { | |
496 | /* Internal branches shouldn't be sent to the PLT. | |
497 | Leave this for now and we'll give an error later. */ | |
498 | if (r_type != R_IA64_PCREL21B) | |
499 | continue; | |
500 | ||
501 | tsec = ia64_info->root.splt; | |
502 | toff = dyn_i->plt2_offset; | |
503 | BFD_ASSERT (irel->r_addend == 0); | |
504 | } | |
505 | ||
506 | /* Can't do anything else with dynamic symbols. */ | |
507 | else if (elf64_ia64_dynamic_symbol_p (h)) | |
508 | continue; | |
509 | ||
510 | else | |
511 | { | |
512 | /* We can't do anything with undefined symbols. */ | |
513 | if (h->root.type == bfd_link_hash_undefined | |
514 | || h->root.type == bfd_link_hash_undefweak) | |
515 | continue; | |
516 | ||
517 | tsec = h->root.u.def.section; | |
518 | toff = h->root.u.def.value; | |
519 | } | |
520 | } | |
521 | ||
522 | toff += irel->r_addend; | |
523 | ||
524 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; | |
525 | ||
526 | roff = irel->r_offset; | |
527 | ||
528 | if (is_branch) | |
529 | { | |
530 | bfd_signed_vma offset; | |
531 | ||
532 | reladdr = (sec->output_section->vma | |
533 | + sec->output_offset | |
534 | + roff) & (bfd_vma) -4; | |
535 | ||
536 | /* The .plt section is aligned at 32byte and the .text section | |
537 | is aligned at 64byte. The .text section is right after the | |
538 | .plt section. After the first relaxation pass, linker may | |
539 | increase the gap between the .plt and .text sections up | |
540 | to 32byte. We assume linker will always insert 32byte | |
a8685210 | 541 | between the .plt and .text sections after the first |
202e2356 NC |
542 | relaxation pass. */ |
543 | if (tsec == ia64_info->root.splt) | |
544 | offset = -0x1000000 + 32; | |
545 | else | |
546 | offset = -0x1000000; | |
547 | ||
548 | /* If the branch is in range, no need to do anything. */ | |
549 | if ((bfd_signed_vma) (symaddr - reladdr) >= offset | |
550 | && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0) | |
551 | { | |
552 | /* If the 60-bit branch is in 21-bit range, optimize it. */ | |
553 | if (r_type == R_IA64_PCREL60B) | |
554 | { | |
555 | ia64_elf_relax_brl (contents, roff); | |
556 | ||
557 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
558 | R_IA64_PCREL21B); | |
559 | ||
560 | /* If the original relocation offset points to slot | |
561 | 1, change it to slot 2. */ | |
562 | if ((irel->r_offset & 3) == 1) | |
563 | irel->r_offset += 1; | |
564 | } | |
565 | ||
566 | continue; | |
567 | } | |
568 | else if (r_type == R_IA64_PCREL60B) | |
569 | continue; | |
570 | else if (ia64_elf_relax_br (contents, roff)) | |
571 | { | |
572 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
573 | R_IA64_PCREL60B); | |
574 | ||
575 | /* Make the relocation offset point to slot 1. */ | |
576 | irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1; | |
577 | continue; | |
578 | } | |
579 | ||
580 | /* We can't put a trampoline in a .init/.fini section. Issue | |
581 | an error. */ | |
582 | if (strcmp (sec->output_section->name, ".init") == 0 | |
583 | || strcmp (sec->output_section->name, ".fini") == 0) | |
584 | { | |
585 | (*_bfd_error_handler) | |
586 | (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."), | |
587 | sec->owner, sec, (unsigned long) roff); | |
588 | bfd_set_error (bfd_error_bad_value); | |
589 | goto error_return; | |
590 | } | |
591 | ||
592 | /* If the branch and target are in the same section, you've | |
593 | got one honking big section and we can't help you unless | |
594 | you are branching backwards. You'll get an error message | |
595 | later. */ | |
596 | if (tsec == sec && toff > roff) | |
597 | continue; | |
598 | ||
599 | /* Look for an existing fixup to this address. */ | |
600 | for (f = fixups; f ; f = f->next) | |
601 | if (f->tsec == tsec && f->toff == toff) | |
602 | break; | |
603 | ||
604 | if (f == NULL) | |
605 | { | |
606 | /* Two alternatives: If it's a branch to a PLT entry, we can | |
607 | make a copy of the FULL_PLT entry. Otherwise, we'll have | |
608 | to use a `brl' insn to get where we're going. */ | |
609 | ||
610 | size_t size; | |
611 | ||
612 | if (tsec == ia64_info->root.splt) | |
613 | size = sizeof (plt_full_entry); | |
614 | else | |
615 | size = sizeof (oor_brl); | |
616 | ||
617 | /* Resize the current section to make room for the new branch. */ | |
618 | trampoff = (sec->size + 15) & (bfd_vma) -16; | |
619 | ||
620 | /* If trampoline is out of range, there is nothing we | |
621 | can do. */ | |
622 | offset = trampoff - (roff & (bfd_vma) -4); | |
623 | if (offset < -0x1000000 || offset > 0x0FFFFF0) | |
624 | continue; | |
625 | ||
626 | amt = trampoff + size; | |
627 | contents = (bfd_byte *) bfd_realloc (contents, amt); | |
628 | if (contents == NULL) | |
629 | goto error_return; | |
630 | sec->size = amt; | |
631 | ||
632 | if (tsec == ia64_info->root.splt) | |
633 | { | |
634 | memcpy (contents + trampoff, plt_full_entry, size); | |
635 | ||
636 | /* Hijack the old relocation for use as the PLTOFF reloc. */ | |
637 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
638 | R_IA64_PLTOFF22); | |
639 | irel->r_offset = trampoff; | |
640 | } | |
641 | else | |
642 | { | |
643 | memcpy (contents + trampoff, oor_brl, size); | |
644 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
645 | R_IA64_PCREL60B); | |
646 | irel->r_offset = trampoff + 2; | |
647 | } | |
648 | ||
649 | /* Record the fixup so we don't do it again this section. */ | |
650 | f = (struct one_fixup *) | |
651 | bfd_malloc ((bfd_size_type) sizeof (*f)); | |
652 | f->next = fixups; | |
653 | f->tsec = tsec; | |
654 | f->toff = toff; | |
655 | f->trampoff = trampoff; | |
656 | fixups = f; | |
657 | } | |
658 | else | |
659 | { | |
660 | /* If trampoline is out of range, there is nothing we | |
661 | can do. */ | |
662 | offset = f->trampoff - (roff & (bfd_vma) -4); | |
663 | if (offset < -0x1000000 || offset > 0x0FFFFF0) | |
664 | continue; | |
665 | ||
666 | /* Nop out the reloc, since we're finalizing things here. */ | |
667 | irel->r_info = ELF64_R_INFO (0, R_IA64_NONE); | |
668 | } | |
669 | ||
670 | /* Fix up the existing branch to hit the trampoline. */ | |
671 | if (ia64_elf_install_value (contents + roff, offset, r_type) | |
672 | != bfd_reloc_ok) | |
673 | goto error_return; | |
674 | ||
675 | changed_contents = TRUE; | |
676 | changed_relocs = TRUE; | |
677 | } | |
678 | else | |
679 | { | |
680 | /* Fetch the gp. */ | |
681 | if (gp == 0) | |
682 | { | |
683 | bfd *obfd = sec->output_section->owner; | |
684 | gp = _bfd_get_gp_value (obfd); | |
685 | if (gp == 0) | |
686 | { | |
687 | if (!elf64_ia64_choose_gp (obfd, link_info, FALSE)) | |
688 | goto error_return; | |
689 | gp = _bfd_get_gp_value (obfd); | |
690 | } | |
691 | } | |
692 | ||
693 | /* If the data is out of range, do nothing. */ | |
694 | if ((bfd_signed_vma) (symaddr - gp) >= 0x200000 | |
695 | ||(bfd_signed_vma) (symaddr - gp) < -0x200000) | |
696 | continue; | |
697 | ||
698 | if (r_type == R_IA64_GPREL22) | |
699 | elf64_ia64_update_short_info (tsec->output_section, | |
700 | tsec->output_offset + toff, | |
701 | ia64_info); | |
702 | else if (r_type == R_IA64_LTOFF22X) | |
703 | { | |
704 | /* Can't deal yet correctly with ABS symbols. */ | |
705 | if (bfd_is_abs_section (tsec)) | |
706 | continue; | |
707 | ||
708 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
709 | R_IA64_GPREL22); | |
710 | changed_relocs = TRUE; | |
711 | ||
712 | elf64_ia64_update_short_info (tsec->output_section, | |
713 | tsec->output_offset + toff, | |
714 | ia64_info); | |
715 | } | |
716 | else | |
717 | { | |
718 | ia64_elf_relax_ldxmov (contents, roff); | |
719 | irel->r_info = ELF64_R_INFO (0, R_IA64_NONE); | |
720 | changed_contents = TRUE; | |
721 | changed_relocs = TRUE; | |
722 | } | |
723 | } | |
724 | } | |
725 | ||
726 | /* ??? If we created fixups, this may push the code segment large | |
727 | enough that the data segment moves, which will change the GP. | |
728 | Reset the GP so that we re-calculate next round. We need to | |
729 | do this at the _beginning_ of the next round; now will not do. */ | |
730 | ||
731 | /* Clean up and go home. */ | |
732 | while (fixups) | |
733 | { | |
734 | struct one_fixup *f = fixups; | |
735 | fixups = fixups->next; | |
736 | free (f); | |
737 | } | |
738 | ||
739 | if (isymbuf != NULL | |
740 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
741 | { | |
742 | if (! link_info->keep_memory) | |
743 | free (isymbuf); | |
744 | else | |
745 | { | |
746 | /* Cache the symbols for elf_link_input_bfd. */ | |
747 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
748 | } | |
749 | } | |
750 | ||
751 | if (contents != NULL | |
752 | && elf_section_data (sec)->this_hdr.contents != contents) | |
753 | { | |
754 | if (!changed_contents && !link_info->keep_memory) | |
755 | free (contents); | |
756 | else | |
757 | { | |
758 | /* Cache the section contents for elf_link_input_bfd. */ | |
759 | elf_section_data (sec)->this_hdr.contents = contents; | |
760 | } | |
761 | } | |
762 | ||
763 | if (elf_section_data (sec)->relocs != internal_relocs) | |
764 | { | |
765 | if (!changed_relocs) | |
766 | free (internal_relocs); | |
767 | else | |
768 | elf_section_data (sec)->relocs = internal_relocs; | |
769 | } | |
770 | ||
771 | if (link_info->relax_pass == 0) | |
772 | { | |
773 | /* Pass 0 is only needed to relax br. */ | |
774 | sec->skip_relax_pass_0 = skip_relax_pass_0; | |
775 | sec->skip_relax_pass_1 = skip_relax_pass_1; | |
776 | } | |
777 | ||
778 | *again = changed_contents || changed_relocs; | |
779 | return TRUE; | |
780 | ||
781 | error_return: | |
782 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) | |
783 | free (isymbuf); | |
784 | if (contents != NULL | |
785 | && elf_section_data (sec)->this_hdr.contents != contents) | |
786 | free (contents); | |
787 | if (internal_relocs != NULL | |
788 | && elf_section_data (sec)->relocs != internal_relocs) | |
789 | free (internal_relocs); | |
790 | return FALSE; | |
791 | } | |
792 | #undef skip_relax_pass_0 | |
793 | #undef skip_relax_pass_1 | |
794 | ||
795 | /* Return TRUE if NAME is an unwind table section name. */ | |
796 | ||
797 | static inline bfd_boolean | |
798 | is_unwind_section_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) | |
799 | { | |
800 | return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind) | |
801 | && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info)) | |
802 | || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once)); | |
803 | } | |
804 | ||
805 | ||
806 | /* Convert IA-64 specific section flags to bfd internal section flags. */ | |
807 | ||
808 | /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV | |
809 | flag. */ | |
810 | ||
811 | static bfd_boolean | |
812 | elf64_ia64_section_flags (flagword *flags, | |
813 | const Elf_Internal_Shdr *hdr) | |
814 | { | |
815 | if (hdr->sh_flags & SHF_IA_64_SHORT) | |
816 | *flags |= SEC_SMALL_DATA; | |
817 | ||
818 | return TRUE; | |
819 | } | |
820 | ||
821 | /* Set the correct type for an IA-64 ELF section. We do this by the | |
822 | section name, which is a hack, but ought to work. */ | |
823 | ||
824 | static bfd_boolean | |
825 | elf64_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, | |
826 | asection *sec) | |
827 | { | |
828 | const char *name; | |
829 | ||
830 | name = bfd_get_section_name (abfd, sec); | |
831 | ||
832 | if (is_unwind_section_name (abfd, name)) | |
833 | { | |
834 | /* We don't have the sections numbered at this point, so sh_info | |
835 | is set later, in elf64_ia64_final_write_processing. */ | |
836 | hdr->sh_type = SHT_IA_64_UNWIND; | |
837 | hdr->sh_flags |= SHF_LINK_ORDER; | |
838 | } | |
839 | else if (strcmp (name, ELF_STRING_ia64_archext) == 0) | |
840 | hdr->sh_type = SHT_IA_64_EXT; | |
841 | ||
842 | if (sec->flags & SEC_SMALL_DATA) | |
843 | hdr->sh_flags |= SHF_IA_64_SHORT; | |
844 | ||
845 | return TRUE; | |
846 | } | |
847 | ||
848 | /* Hook called by the linker routine which adds symbols from an object | |
849 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
850 | ||
851 | static bfd_boolean | |
852 | elf64_ia64_add_symbol_hook (bfd *abfd, | |
853 | struct bfd_link_info *info, | |
854 | Elf_Internal_Sym *sym, | |
855 | const char **namep ATTRIBUTE_UNUSED, | |
856 | flagword *flagsp ATTRIBUTE_UNUSED, | |
857 | asection **secp, | |
858 | bfd_vma *valp) | |
859 | { | |
860 | if (sym->st_shndx == SHN_COMMON | |
861 | && !info->relocatable | |
862 | && sym->st_size <= elf_gp_size (abfd)) | |
863 | { | |
864 | /* Common symbols less than or equal to -G nn bytes are | |
865 | automatically put into .sbss. */ | |
866 | ||
867 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); | |
868 | ||
869 | if (scomm == NULL) | |
870 | { | |
871 | scomm = bfd_make_section_with_flags (abfd, ".scommon", | |
872 | (SEC_ALLOC | |
873 | | SEC_IS_COMMON | |
874 | | SEC_LINKER_CREATED)); | |
875 | if (scomm == NULL) | |
876 | return FALSE; | |
877 | } | |
878 | ||
879 | *secp = scomm; | |
880 | *valp = sym->st_size; | |
881 | } | |
882 | ||
883 | return TRUE; | |
884 | } | |
885 | ||
886 | /* According to the Tahoe assembler spec, all labels starting with a | |
887 | '.' are local. */ | |
888 | ||
889 | static bfd_boolean | |
890 | elf64_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, | |
891 | const char *name) | |
892 | { | |
893 | return name[0] == '.'; | |
894 | } | |
895 | ||
896 | /* Should we do dynamic things to this symbol? */ | |
897 | ||
898 | static bfd_boolean | |
899 | elf64_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h) | |
900 | { | |
901 | return h != NULL && h->def_dynamic; | |
902 | } | |
903 | ||
904 | static struct bfd_hash_entry* | |
905 | elf64_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry, | |
906 | struct bfd_hash_table *table, | |
907 | const char *string) | |
908 | { | |
909 | struct elf64_ia64_link_hash_entry *ret; | |
910 | ret = (struct elf64_ia64_link_hash_entry *) entry; | |
911 | ||
912 | /* Allocate the structure if it has not already been allocated by a | |
913 | subclass. */ | |
914 | if (!ret) | |
915 | ret = bfd_hash_allocate (table, sizeof (*ret)); | |
916 | ||
917 | if (!ret) | |
918 | return 0; | |
919 | ||
920 | /* Call the allocation method of the superclass. */ | |
921 | ret = ((struct elf64_ia64_link_hash_entry *) | |
922 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
923 | table, string)); | |
924 | ||
925 | ret->info = NULL; | |
926 | ret->count = 0; | |
927 | ret->sorted_count = 0; | |
928 | ret->size = 0; | |
929 | return (struct bfd_hash_entry *) ret; | |
930 | } | |
931 | ||
932 | static void | |
933 | elf64_ia64_hash_hide_symbol (struct bfd_link_info *info, | |
934 | struct elf_link_hash_entry *xh, | |
935 | bfd_boolean force_local) | |
936 | { | |
937 | struct elf64_ia64_link_hash_entry *h; | |
938 | struct elf64_ia64_dyn_sym_info *dyn_i; | |
939 | unsigned int count; | |
940 | ||
941 | h = (struct elf64_ia64_link_hash_entry *)xh; | |
942 | ||
943 | _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); | |
944 | ||
945 | for (count = h->count, dyn_i = h->info; | |
946 | count != 0; | |
947 | count--, dyn_i++) | |
948 | { | |
949 | dyn_i->want_plt2 = 0; | |
950 | dyn_i->want_plt = 0; | |
951 | } | |
952 | } | |
953 | ||
954 | /* Compute a hash of a local hash entry. */ | |
955 | ||
956 | static hashval_t | |
957 | elf64_ia64_local_htab_hash (const void *ptr) | |
958 | { | |
959 | struct elf64_ia64_local_hash_entry *entry | |
960 | = (struct elf64_ia64_local_hash_entry *) ptr; | |
961 | ||
962 | return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym); | |
963 | } | |
964 | ||
965 | /* Compare local hash entries. */ | |
966 | ||
967 | static int | |
968 | elf64_ia64_local_htab_eq (const void *ptr1, const void *ptr2) | |
969 | { | |
970 | struct elf64_ia64_local_hash_entry *entry1 | |
971 | = (struct elf64_ia64_local_hash_entry *) ptr1; | |
972 | struct elf64_ia64_local_hash_entry *entry2 | |
973 | = (struct elf64_ia64_local_hash_entry *) ptr2; | |
974 | ||
975 | return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym; | |
976 | } | |
977 | ||
978 | /* Create the derived linker hash table. The IA-64 ELF port uses this | |
979 | derived hash table to keep information specific to the IA-64 ElF | |
980 | linker (without using static variables). */ | |
981 | ||
982 | static struct bfd_link_hash_table * | |
983 | elf64_ia64_hash_table_create (bfd *abfd) | |
984 | { | |
985 | struct elf64_ia64_link_hash_table *ret; | |
986 | ||
987 | ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret)); | |
988 | if (!ret) | |
989 | return NULL; | |
990 | ||
991 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
992 | elf64_ia64_new_elf_hash_entry, | |
993 | sizeof (struct elf64_ia64_link_hash_entry), | |
994 | IA64_ELF_DATA)) | |
995 | { | |
996 | free (ret); | |
997 | return NULL; | |
998 | } | |
999 | ||
1000 | ret->loc_hash_table = htab_try_create (1024, elf64_ia64_local_htab_hash, | |
1001 | elf64_ia64_local_htab_eq, NULL); | |
1002 | ret->loc_hash_memory = objalloc_create (); | |
1003 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
1004 | { | |
1005 | free (ret); | |
1006 | return NULL; | |
1007 | } | |
1008 | ||
1009 | return &ret->root.root; | |
1010 | } | |
1011 | ||
1012 | /* Free the global elf64_ia64_dyn_sym_info array. */ | |
1013 | ||
1014 | static bfd_boolean | |
1015 | elf64_ia64_global_dyn_info_free (void **xentry, | |
1016 | void * unused ATTRIBUTE_UNUSED) | |
1017 | { | |
1018 | struct elf64_ia64_link_hash_entry *entry | |
1019 | = (struct elf64_ia64_link_hash_entry *) xentry; | |
1020 | ||
1021 | if (entry->root.root.type == bfd_link_hash_warning) | |
1022 | entry = (struct elf64_ia64_link_hash_entry *) entry->root.root.u.i.link; | |
1023 | ||
1024 | if (entry->info) | |
1025 | { | |
1026 | free (entry->info); | |
1027 | entry->info = NULL; | |
1028 | entry->count = 0; | |
1029 | entry->sorted_count = 0; | |
1030 | entry->size = 0; | |
1031 | } | |
1032 | ||
1033 | return TRUE; | |
1034 | } | |
1035 | ||
1036 | /* Free the local elf64_ia64_dyn_sym_info array. */ | |
1037 | ||
1038 | static bfd_boolean | |
1039 | elf64_ia64_local_dyn_info_free (void **slot, | |
1040 | void * unused ATTRIBUTE_UNUSED) | |
1041 | { | |
1042 | struct elf64_ia64_local_hash_entry *entry | |
1043 | = (struct elf64_ia64_local_hash_entry *) *slot; | |
1044 | ||
1045 | if (entry->info) | |
1046 | { | |
1047 | free (entry->info); | |
1048 | entry->info = NULL; | |
1049 | entry->count = 0; | |
1050 | entry->sorted_count = 0; | |
1051 | entry->size = 0; | |
1052 | } | |
1053 | ||
1054 | return TRUE; | |
1055 | } | |
1056 | ||
1057 | /* Destroy IA-64 linker hash table. */ | |
1058 | ||
1059 | static void | |
1060 | elf64_ia64_hash_table_free (struct bfd_link_hash_table *hash) | |
1061 | { | |
1062 | struct elf64_ia64_link_hash_table *ia64_info | |
1063 | = (struct elf64_ia64_link_hash_table *) hash; | |
1064 | if (ia64_info->loc_hash_table) | |
1065 | { | |
1066 | htab_traverse (ia64_info->loc_hash_table, | |
1067 | elf64_ia64_local_dyn_info_free, NULL); | |
1068 | htab_delete (ia64_info->loc_hash_table); | |
1069 | } | |
1070 | if (ia64_info->loc_hash_memory) | |
1071 | objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory); | |
1072 | elf_link_hash_traverse (&ia64_info->root, | |
1073 | elf64_ia64_global_dyn_info_free, NULL); | |
9f7c3e5e | 1074 | _bfd_elf_link_hash_table_free (hash); |
202e2356 NC |
1075 | } |
1076 | ||
1077 | /* Traverse both local and global hash tables. */ | |
1078 | ||
1079 | struct elf64_ia64_dyn_sym_traverse_data | |
1080 | { | |
1081 | bfd_boolean (*func) (struct elf64_ia64_dyn_sym_info *, void *); | |
1082 | void * data; | |
1083 | }; | |
1084 | ||
1085 | static bfd_boolean | |
1086 | elf64_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry, | |
1087 | void * xdata) | |
1088 | { | |
1089 | struct elf64_ia64_link_hash_entry *entry | |
1090 | = (struct elf64_ia64_link_hash_entry *) xentry; | |
1091 | struct elf64_ia64_dyn_sym_traverse_data *data | |
1092 | = (struct elf64_ia64_dyn_sym_traverse_data *) xdata; | |
1093 | struct elf64_ia64_dyn_sym_info *dyn_i; | |
1094 | unsigned int count; | |
1095 | ||
1096 | if (entry->root.root.type == bfd_link_hash_warning) | |
1097 | entry = (struct elf64_ia64_link_hash_entry *) entry->root.root.u.i.link; | |
1098 | ||
1099 | for (count = entry->count, dyn_i = entry->info; | |
1100 | count != 0; | |
1101 | count--, dyn_i++) | |
1102 | if (! (*data->func) (dyn_i, data->data)) | |
1103 | return FALSE; | |
1104 | return TRUE; | |
1105 | } | |
1106 | ||
1107 | static bfd_boolean | |
1108 | elf64_ia64_local_dyn_sym_thunk (void **slot, void * xdata) | |
1109 | { | |
1110 | struct elf64_ia64_local_hash_entry *entry | |
1111 | = (struct elf64_ia64_local_hash_entry *) *slot; | |
1112 | struct elf64_ia64_dyn_sym_traverse_data *data | |
1113 | = (struct elf64_ia64_dyn_sym_traverse_data *) xdata; | |
1114 | struct elf64_ia64_dyn_sym_info *dyn_i; | |
1115 | unsigned int count; | |
1116 | ||
1117 | for (count = entry->count, dyn_i = entry->info; | |
1118 | count != 0; | |
1119 | count--, dyn_i++) | |
1120 | if (! (*data->func) (dyn_i, data->data)) | |
1121 | return FALSE; | |
1122 | return TRUE; | |
1123 | } | |
1124 | ||
1125 | static void | |
1126 | elf64_ia64_dyn_sym_traverse (struct elf64_ia64_link_hash_table *ia64_info, | |
1127 | bfd_boolean (*func) (struct elf64_ia64_dyn_sym_info *, void *), | |
1128 | void * data) | |
1129 | { | |
1130 | struct elf64_ia64_dyn_sym_traverse_data xdata; | |
1131 | ||
1132 | xdata.func = func; | |
1133 | xdata.data = data; | |
1134 | ||
1135 | elf_link_hash_traverse (&ia64_info->root, | |
1136 | elf64_ia64_global_dyn_sym_thunk, &xdata); | |
1137 | htab_traverse (ia64_info->loc_hash_table, | |
1138 | elf64_ia64_local_dyn_sym_thunk, &xdata); | |
1139 | } | |
1140 | ||
1141 | #define NOTE_NAME "IPF/VMS" | |
1142 | ||
1143 | static bfd_boolean | |
1144 | create_ia64_vms_notes (bfd *abfd, struct bfd_link_info *info, | |
1145 | unsigned int time_hi, unsigned int time_lo) | |
1146 | { | |
1147 | #define NBR_NOTES 7 | |
1148 | Elf_Internal_Note notes[NBR_NOTES]; | |
1149 | char *module_name; | |
1150 | int module_name_len; | |
1151 | unsigned char cur_time[8]; | |
1152 | Elf64_External_VMS_ORIG_DYN_Note *orig_dyn; | |
1153 | unsigned int orig_dyn_size; | |
1154 | unsigned int note_size; | |
1155 | int i; | |
1156 | unsigned char *noteptr; | |
1157 | unsigned char *note_contents; | |
1158 | struct elf64_ia64_link_hash_table *ia64_info; | |
1159 | ||
1160 | ia64_info = elf64_ia64_hash_table (info); | |
1161 | ||
1162 | module_name = vms_get_module_name (bfd_get_filename (abfd), TRUE); | |
1163 | module_name_len = strlen (module_name) + 1; | |
1164 | ||
1165 | bfd_putl32 (time_lo, cur_time + 0); | |
1166 | bfd_putl32 (time_hi, cur_time + 4); | |
1167 | ||
1168 | /* Note 0: IMGNAM. */ | |
1169 | notes[0].type = NT_VMS_IMGNAM; | |
1170 | notes[0].descdata = module_name; | |
1171 | notes[0].descsz = module_name_len; | |
1172 | ||
1173 | /* Note 1: GSTNAM. */ | |
1174 | notes[1].type = NT_VMS_GSTNAM; | |
1175 | notes[1].descdata = module_name; | |
1176 | notes[1].descsz = module_name_len; | |
1177 | ||
1178 | /* Note 2: IMGID. */ | |
1179 | #define IMG_ID "V1.0" | |
1180 | notes[2].type = NT_VMS_IMGID; | |
1181 | notes[2].descdata = IMG_ID; | |
1182 | notes[2].descsz = sizeof (IMG_ID); | |
1183 | ||
1184 | /* Note 3: Linktime. */ | |
1185 | notes[3].type = NT_VMS_LINKTIME; | |
1186 | notes[3].descdata = (char *)cur_time; | |
1187 | notes[3].descsz = sizeof (cur_time); | |
1188 | ||
1189 | /* Note 4: Linker id. */ | |
1190 | notes[4].type = NT_VMS_LINKID; | |
1191 | notes[4].descdata = "GNU ld " BFD_VERSION_STRING; | |
1192 | notes[4].descsz = strlen (notes[4].descdata) + 1; | |
1193 | ||
1194 | /* Note 5: Original dyn. */ | |
1195 | orig_dyn_size = (sizeof (*orig_dyn) + sizeof (IMG_ID) - 1 + 7) & ~7; | |
1196 | orig_dyn = bfd_zalloc (abfd, orig_dyn_size); | |
1197 | if (orig_dyn == NULL) | |
1198 | return FALSE; | |
1199 | bfd_putl32 (1, orig_dyn->major_id); | |
1200 | bfd_putl32 (3, orig_dyn->minor_id); | |
1201 | memcpy (orig_dyn->manipulation_date, cur_time, sizeof (cur_time)); | |
1202 | bfd_putl64 (VMS_LF_IMGSTA | VMS_LF_MAIN, orig_dyn->link_flags); | |
1203 | bfd_putl32 (EF_IA_64_ABI64, orig_dyn->elf_flags); | |
1204 | memcpy (orig_dyn->imgid, IMG_ID, sizeof (IMG_ID)); | |
1205 | notes[5].type = NT_VMS_ORIG_DYN; | |
1206 | notes[5].descdata = (char *)orig_dyn; | |
1207 | notes[5].descsz = orig_dyn_size; | |
1208 | ||
1209 | /* Note 3: Patchtime. */ | |
1210 | notes[6].type = NT_VMS_PATCHTIME; | |
1211 | notes[6].descdata = (char *)cur_time; | |
1212 | notes[6].descsz = sizeof (cur_time); | |
1213 | ||
1214 | /* Compute notes size. */ | |
1215 | note_size = 0; | |
1216 | for (i = 0; i < NBR_NOTES; i++) | |
1217 | note_size += sizeof (Elf64_External_VMS_Note) - 1 | |
1218 | + ((sizeof (NOTE_NAME) - 1 + 7) & ~7) | |
1219 | + ((notes[i].descsz + 7) & ~7); | |
1220 | ||
1221 | /* Malloc a temporary buffer large enough for most notes */ | |
1222 | note_contents = (unsigned char *) bfd_zalloc (abfd, note_size); | |
1223 | if (note_contents == NULL) | |
1224 | return FALSE; | |
1225 | noteptr = note_contents; | |
1226 | ||
1227 | /* Fill notes. */ | |
1228 | for (i = 0; i < NBR_NOTES; i++) | |
1229 | { | |
1230 | Elf64_External_VMS_Note *enote = (Elf64_External_VMS_Note *) noteptr; | |
1231 | ||
1232 | bfd_putl64 (sizeof (NOTE_NAME) - 1, enote->namesz); | |
1233 | bfd_putl64 (notes[i].descsz, enote->descsz); | |
1234 | bfd_putl64 (notes[i].type, enote->type); | |
1235 | ||
1236 | noteptr = (unsigned char *)enote->name; | |
1237 | memcpy (noteptr, NOTE_NAME, sizeof (NOTE_NAME) - 1); | |
1238 | noteptr += (sizeof (NOTE_NAME) - 1 + 7) & ~7; | |
1239 | memcpy (noteptr, notes[i].descdata, notes[i].descsz); | |
1240 | noteptr += (notes[i].descsz + 7) & ~7; | |
1241 | } | |
1242 | ||
1243 | ia64_info->note_sec->contents = note_contents; | |
1244 | ia64_info->note_sec->size = note_size; | |
1245 | ||
1246 | free (module_name); | |
1247 | ||
1248 | return TRUE; | |
1249 | } | |
1250 | ||
1251 | static bfd_boolean | |
1252 | elf64_ia64_create_dynamic_sections (bfd *abfd, | |
1253 | struct bfd_link_info *info) | |
1254 | { | |
1255 | struct elf64_ia64_link_hash_table *ia64_info; | |
1256 | asection *s; | |
1257 | flagword flags; | |
1258 | const struct elf_backend_data *bed; | |
1259 | ||
1260 | ia64_info = elf64_ia64_hash_table (info); | |
1261 | if (ia64_info == NULL) | |
1262 | return FALSE; | |
1263 | ||
1264 | if (elf_hash_table (info)->dynamic_sections_created) | |
1265 | return TRUE; | |
1266 | ||
1267 | abfd = elf_hash_table (info)->dynobj; | |
1268 | bed = get_elf_backend_data (abfd); | |
1269 | ||
1270 | flags = bed->dynamic_sec_flags; | |
1271 | ||
3d4d4302 AM |
1272 | s = bfd_make_section_anyway_with_flags (abfd, ".dynamic", |
1273 | flags | SEC_READONLY); | |
202e2356 NC |
1274 | if (s == NULL |
1275 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
1276 | return FALSE; | |
1277 | ||
3d4d4302 | 1278 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags | SEC_READONLY); |
202e2356 NC |
1279 | if (s == NULL |
1280 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) | |
1281 | return FALSE; | |
1282 | ia64_info->root.splt = s; | |
1283 | ||
1284 | if (!get_got (abfd, ia64_info)) | |
1285 | return FALSE; | |
1286 | ||
1287 | if (!get_pltoff (abfd, ia64_info)) | |
1288 | return FALSE; | |
1289 | ||
3d4d4302 AM |
1290 | s = bfd_make_section_anyway_with_flags (abfd, ".vmsdynstr", |
1291 | (SEC_ALLOC | |
1292 | | SEC_HAS_CONTENTS | |
1293 | | SEC_IN_MEMORY | |
1294 | | SEC_LINKER_CREATED)); | |
202e2356 NC |
1295 | if (s == NULL |
1296 | || !bfd_set_section_alignment (abfd, s, 0)) | |
1297 | return FALSE; | |
1298 | ||
1299 | /* Create a fixup section. */ | |
3d4d4302 AM |
1300 | s = bfd_make_section_anyway_with_flags (abfd, ".fixups", |
1301 | (SEC_ALLOC | |
1302 | | SEC_HAS_CONTENTS | |
1303 | | SEC_IN_MEMORY | |
1304 | | SEC_LINKER_CREATED)); | |
202e2356 NC |
1305 | if (s == NULL |
1306 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1307 | return FALSE; | |
1308 | ia64_info->fixups_sec = s; | |
1309 | ||
1310 | /* Create the transfer fixup section. */ | |
3d4d4302 AM |
1311 | s = bfd_make_section_anyway_with_flags (abfd, ".transfer", |
1312 | (SEC_ALLOC | |
1313 | | SEC_HAS_CONTENTS | |
1314 | | SEC_IN_MEMORY | |
1315 | | SEC_LINKER_CREATED)); | |
202e2356 NC |
1316 | if (s == NULL |
1317 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1318 | return FALSE; | |
1319 | s->size = sizeof (struct elf64_vms_transfer); | |
1320 | ia64_info->transfer_sec = s; | |
1321 | ||
1322 | /* Create note section. */ | |
1323 | s = bfd_make_section_anyway_with_flags (abfd, ".vms.note", | |
1324 | (SEC_LINKER_CREATED | |
1325 | | SEC_HAS_CONTENTS | |
1326 | | SEC_IN_MEMORY | |
1327 | | SEC_READONLY)); | |
1328 | if (s == NULL | |
1329 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1330 | return FALSE; | |
1331 | ia64_info->note_sec = s; | |
1332 | ||
1333 | elf_hash_table (info)->dynamic_sections_created = TRUE; | |
1334 | return TRUE; | |
1335 | } | |
1336 | ||
1337 | /* Find and/or create a hash entry for local symbol. */ | |
1338 | static struct elf64_ia64_local_hash_entry * | |
1339 | get_local_sym_hash (struct elf64_ia64_link_hash_table *ia64_info, | |
1340 | bfd *abfd, const Elf_Internal_Rela *rel, | |
1341 | bfd_boolean create) | |
1342 | { | |
1343 | struct elf64_ia64_local_hash_entry e, *ret; | |
1344 | asection *sec = abfd->sections; | |
1345 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
1346 | ELF64_R_SYM (rel->r_info)); | |
1347 | void **slot; | |
1348 | ||
1349 | e.id = sec->id; | |
1350 | e.r_sym = ELF64_R_SYM (rel->r_info); | |
1351 | slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h, | |
1352 | create ? INSERT : NO_INSERT); | |
1353 | ||
1354 | if (!slot) | |
1355 | return NULL; | |
1356 | ||
1357 | if (*slot) | |
1358 | return (struct elf64_ia64_local_hash_entry *) *slot; | |
1359 | ||
1360 | ret = (struct elf64_ia64_local_hash_entry *) | |
1361 | objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory, | |
1362 | sizeof (struct elf64_ia64_local_hash_entry)); | |
1363 | if (ret) | |
1364 | { | |
1365 | memset (ret, 0, sizeof (*ret)); | |
1366 | ret->id = sec->id; | |
1367 | ret->r_sym = ELF64_R_SYM (rel->r_info); | |
1368 | *slot = ret; | |
1369 | } | |
1370 | return ret; | |
1371 | } | |
1372 | ||
1373 | /* Used to sort elf64_ia64_dyn_sym_info array. */ | |
1374 | ||
1375 | static int | |
1376 | addend_compare (const void *xp, const void *yp) | |
1377 | { | |
1378 | const struct elf64_ia64_dyn_sym_info *x | |
1379 | = (const struct elf64_ia64_dyn_sym_info *) xp; | |
1380 | const struct elf64_ia64_dyn_sym_info *y | |
1381 | = (const struct elf64_ia64_dyn_sym_info *) yp; | |
1382 | ||
1383 | return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0; | |
1384 | } | |
1385 | ||
1386 | /* Sort elf64_ia64_dyn_sym_info array and remove duplicates. */ | |
1387 | ||
1388 | static unsigned int | |
1389 | sort_dyn_sym_info (struct elf64_ia64_dyn_sym_info *info, | |
1390 | unsigned int count) | |
1391 | { | |
1392 | bfd_vma curr, prev, got_offset; | |
1393 | unsigned int i, kept, dupes, diff, dest, src, len; | |
1394 | ||
1395 | qsort (info, count, sizeof (*info), addend_compare); | |
1396 | ||
1397 | /* Find the first duplicate. */ | |
1398 | prev = info [0].addend; | |
1399 | got_offset = info [0].got_offset; | |
1400 | for (i = 1; i < count; i++) | |
1401 | { | |
1402 | curr = info [i].addend; | |
1403 | if (curr == prev) | |
1404 | { | |
1405 | /* For duplicates, make sure that GOT_OFFSET is valid. */ | |
1406 | if (got_offset == (bfd_vma) -1) | |
1407 | got_offset = info [i].got_offset; | |
1408 | break; | |
1409 | } | |
1410 | got_offset = info [i].got_offset; | |
1411 | prev = curr; | |
1412 | } | |
1413 | ||
1414 | /* We may move a block of elements to here. */ | |
1415 | dest = i++; | |
1416 | ||
1417 | /* Remove duplicates. */ | |
1418 | if (i < count) | |
1419 | { | |
1420 | while (i < count) | |
1421 | { | |
1422 | /* For duplicates, make sure that the kept one has a valid | |
1423 | got_offset. */ | |
1424 | kept = dest - 1; | |
1425 | if (got_offset != (bfd_vma) -1) | |
1426 | info [kept].got_offset = got_offset; | |
1427 | ||
1428 | curr = info [i].addend; | |
1429 | got_offset = info [i].got_offset; | |
1430 | ||
1431 | /* Move a block of elements whose first one is different from | |
1432 | the previous. */ | |
1433 | if (curr == prev) | |
1434 | { | |
1435 | for (src = i + 1; src < count; src++) | |
1436 | { | |
1437 | if (info [src].addend != curr) | |
1438 | break; | |
1439 | /* For duplicates, make sure that GOT_OFFSET is | |
1440 | valid. */ | |
1441 | if (got_offset == (bfd_vma) -1) | |
1442 | got_offset = info [src].got_offset; | |
1443 | } | |
1444 | ||
1445 | /* Make sure that the kept one has a valid got_offset. */ | |
1446 | if (got_offset != (bfd_vma) -1) | |
1447 | info [kept].got_offset = got_offset; | |
1448 | } | |
1449 | else | |
1450 | src = i; | |
1451 | ||
1452 | if (src >= count) | |
1453 | break; | |
1454 | ||
1455 | /* Find the next duplicate. SRC will be kept. */ | |
1456 | prev = info [src].addend; | |
1457 | got_offset = info [src].got_offset; | |
1458 | for (dupes = src + 1; dupes < count; dupes ++) | |
1459 | { | |
1460 | curr = info [dupes].addend; | |
1461 | if (curr == prev) | |
1462 | { | |
1463 | /* Make sure that got_offset is valid. */ | |
1464 | if (got_offset == (bfd_vma) -1) | |
1465 | got_offset = info [dupes].got_offset; | |
1466 | ||
1467 | /* For duplicates, make sure that the kept one has | |
1468 | a valid got_offset. */ | |
1469 | if (got_offset != (bfd_vma) -1) | |
1470 | info [dupes - 1].got_offset = got_offset; | |
1471 | break; | |
1472 | } | |
1473 | got_offset = info [dupes].got_offset; | |
1474 | prev = curr; | |
1475 | } | |
1476 | ||
1477 | /* How much to move. */ | |
1478 | len = dupes - src; | |
1479 | i = dupes + 1; | |
1480 | ||
1481 | if (len == 1 && dupes < count) | |
1482 | { | |
1483 | /* If we only move 1 element, we combine it with the next | |
1484 | one. There must be at least a duplicate. Find the | |
1485 | next different one. */ | |
1486 | for (diff = dupes + 1, src++; diff < count; diff++, src++) | |
1487 | { | |
1488 | if (info [diff].addend != curr) | |
1489 | break; | |
1490 | /* Make sure that got_offset is valid. */ | |
1491 | if (got_offset == (bfd_vma) -1) | |
1492 | got_offset = info [diff].got_offset; | |
1493 | } | |
1494 | ||
1495 | /* Makre sure that the last duplicated one has an valid | |
1496 | offset. */ | |
1497 | BFD_ASSERT (curr == prev); | |
1498 | if (got_offset != (bfd_vma) -1) | |
1499 | info [diff - 1].got_offset = got_offset; | |
1500 | ||
1501 | if (diff < count) | |
1502 | { | |
1503 | /* Find the next duplicate. Track the current valid | |
1504 | offset. */ | |
1505 | prev = info [diff].addend; | |
1506 | got_offset = info [diff].got_offset; | |
1507 | for (dupes = diff + 1; dupes < count; dupes ++) | |
1508 | { | |
1509 | curr = info [dupes].addend; | |
1510 | if (curr == prev) | |
1511 | { | |
1512 | /* For duplicates, make sure that GOT_OFFSET | |
1513 | is valid. */ | |
1514 | if (got_offset == (bfd_vma) -1) | |
1515 | got_offset = info [dupes].got_offset; | |
1516 | break; | |
1517 | } | |
1518 | got_offset = info [dupes].got_offset; | |
1519 | prev = curr; | |
1520 | diff++; | |
1521 | } | |
1522 | ||
1523 | len = diff - src + 1; | |
1524 | i = diff + 1; | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | memmove (&info [dest], &info [src], len * sizeof (*info)); | |
1529 | ||
1530 | dest += len; | |
1531 | } | |
1532 | ||
1533 | count = dest; | |
1534 | } | |
1535 | else | |
1536 | { | |
1537 | /* When we get here, either there is no duplicate at all or | |
1538 | the only duplicate is the last element. */ | |
1539 | if (dest < count) | |
1540 | { | |
1541 | /* If the last element is a duplicate, make sure that the | |
1542 | kept one has a valid got_offset. We also update count. */ | |
1543 | if (got_offset != (bfd_vma) -1) | |
1544 | info [dest - 1].got_offset = got_offset; | |
1545 | count = dest; | |
1546 | } | |
1547 | } | |
1548 | ||
1549 | return count; | |
1550 | } | |
1551 | ||
1552 | /* Find and/or create a descriptor for dynamic symbol info. This will | |
1553 | vary based on global or local symbol, and the addend to the reloc. | |
1554 | ||
1555 | We don't sort when inserting. Also, we sort and eliminate | |
1556 | duplicates if there is an unsorted section. Typically, this will | |
1557 | only happen once, because we do all insertions before lookups. We | |
1558 | then use bsearch to do a lookup. This also allows lookups to be | |
1559 | fast. So we have fast insertion (O(log N) due to duplicate check), | |
1560 | fast lookup (O(log N)) and one sort (O(N log N) expected time). | |
1561 | Previously, all lookups were O(N) because of the use of the linked | |
1562 | list and also all insertions were O(N) because of the check for | |
1563 | duplicates. There are some complications here because the array | |
1564 | size grows occasionally, which may add an O(N) factor, but this | |
1565 | should be rare. Also, we free the excess array allocation, which | |
1566 | requires a copy which is O(N), but this only happens once. */ | |
1567 | ||
1568 | static struct elf64_ia64_dyn_sym_info * | |
1569 | get_dyn_sym_info (struct elf64_ia64_link_hash_table *ia64_info, | |
1570 | struct elf_link_hash_entry *h, bfd *abfd, | |
1571 | const Elf_Internal_Rela *rel, bfd_boolean create) | |
1572 | { | |
1573 | struct elf64_ia64_dyn_sym_info **info_p, *info, *dyn_i, key; | |
1574 | unsigned int *count_p, *sorted_count_p, *size_p; | |
1575 | unsigned int count, sorted_count, size; | |
1576 | bfd_vma addend = rel ? rel->r_addend : 0; | |
1577 | bfd_size_type amt; | |
1578 | ||
1579 | if (h) | |
1580 | { | |
1581 | struct elf64_ia64_link_hash_entry *global_h; | |
1582 | ||
1583 | global_h = (struct elf64_ia64_link_hash_entry *) h; | |
1584 | info_p = &global_h->info; | |
1585 | count_p = &global_h->count; | |
1586 | sorted_count_p = &global_h->sorted_count; | |
1587 | size_p = &global_h->size; | |
1588 | } | |
1589 | else | |
1590 | { | |
1591 | struct elf64_ia64_local_hash_entry *loc_h; | |
1592 | ||
1593 | loc_h = get_local_sym_hash (ia64_info, abfd, rel, create); | |
1594 | if (!loc_h) | |
1595 | { | |
1596 | BFD_ASSERT (!create); | |
1597 | return NULL; | |
1598 | } | |
1599 | ||
1600 | info_p = &loc_h->info; | |
1601 | count_p = &loc_h->count; | |
1602 | sorted_count_p = &loc_h->sorted_count; | |
1603 | size_p = &loc_h->size; | |
1604 | } | |
1605 | ||
1606 | count = *count_p; | |
1607 | sorted_count = *sorted_count_p; | |
1608 | size = *size_p; | |
1609 | info = *info_p; | |
1610 | if (create) | |
1611 | { | |
1612 | /* When we create the array, we don't check for duplicates, | |
1613 | except in the previously sorted section if one exists, and | |
1614 | against the last inserted entry. This allows insertions to | |
1615 | be fast. */ | |
1616 | if (info) | |
1617 | { | |
1618 | if (sorted_count) | |
1619 | { | |
1620 | /* Try bsearch first on the sorted section. */ | |
1621 | key.addend = addend; | |
1622 | dyn_i = bsearch (&key, info, sorted_count, | |
1623 | sizeof (*info), addend_compare); | |
1624 | ||
1625 | if (dyn_i) | |
1626 | { | |
1627 | return dyn_i; | |
1628 | } | |
1629 | } | |
1630 | ||
1631 | /* Do a quick check for the last inserted entry. */ | |
1632 | dyn_i = info + count - 1; | |
1633 | if (dyn_i->addend == addend) | |
1634 | { | |
1635 | return dyn_i; | |
1636 | } | |
1637 | } | |
1638 | ||
1639 | if (size == 0) | |
1640 | { | |
1641 | /* It is the very first element. We create the array of size | |
1642 | 1. */ | |
1643 | size = 1; | |
1644 | amt = size * sizeof (*info); | |
1645 | info = bfd_malloc (amt); | |
1646 | } | |
1647 | else if (size <= count) | |
1648 | { | |
1649 | /* We double the array size every time when we reach the | |
1650 | size limit. */ | |
1651 | size += size; | |
1652 | amt = size * sizeof (*info); | |
1653 | info = bfd_realloc (info, amt); | |
1654 | } | |
1655 | else | |
1656 | goto has_space; | |
1657 | ||
1658 | if (info == NULL) | |
1659 | return NULL; | |
1660 | *size_p = size; | |
1661 | *info_p = info; | |
1662 | ||
1663 | has_space: | |
1664 | /* Append the new one to the array. */ | |
1665 | dyn_i = info + count; | |
1666 | memset (dyn_i, 0, sizeof (*dyn_i)); | |
1667 | dyn_i->got_offset = (bfd_vma) -1; | |
1668 | dyn_i->addend = addend; | |
1669 | ||
1670 | /* We increment count only since the new ones are unsorted and | |
1671 | may have duplicate. */ | |
1672 | (*count_p)++; | |
1673 | } | |
1674 | else | |
1675 | { | |
1676 | /* It is a lookup without insertion. Sort array if part of the | |
1677 | array isn't sorted. */ | |
1678 | if (count != sorted_count) | |
1679 | { | |
1680 | count = sort_dyn_sym_info (info, count); | |
1681 | *count_p = count; | |
1682 | *sorted_count_p = count; | |
1683 | } | |
1684 | ||
1685 | /* Free unused memory. */ | |
1686 | if (size != count) | |
1687 | { | |
1688 | amt = count * sizeof (*info); | |
1689 | info = bfd_malloc (amt); | |
1690 | if (info != NULL) | |
1691 | { | |
1692 | memcpy (info, *info_p, amt); | |
1693 | free (*info_p); | |
1694 | *size_p = count; | |
1695 | *info_p = info; | |
1696 | } | |
1697 | } | |
1698 | ||
1699 | key.addend = addend; | |
1700 | dyn_i = bsearch (&key, info, count, | |
1701 | sizeof (*info), addend_compare); | |
1702 | } | |
1703 | ||
1704 | return dyn_i; | |
1705 | } | |
1706 | ||
1707 | static asection * | |
1708 | get_got (bfd *abfd, struct elf64_ia64_link_hash_table *ia64_info) | |
1709 | { | |
1710 | asection *got; | |
1711 | bfd *dynobj; | |
1712 | ||
1713 | got = ia64_info->root.sgot; | |
1714 | if (!got) | |
1715 | { | |
1716 | flagword flags; | |
1717 | ||
1718 | dynobj = ia64_info->root.dynobj; | |
1719 | if (!dynobj) | |
1720 | ia64_info->root.dynobj = dynobj = abfd; | |
1721 | ||
1722 | /* The .got section is always aligned at 8 bytes. */ | |
1723 | flags = get_elf_backend_data (dynobj)->dynamic_sec_flags; | |
3d4d4302 AM |
1724 | got = bfd_make_section_anyway_with_flags (dynobj, ".got", |
1725 | flags | SEC_SMALL_DATA); | |
202e2356 NC |
1726 | if (got == NULL |
1727 | || !bfd_set_section_alignment (dynobj, got, 3)) | |
1728 | return NULL; | |
1729 | ia64_info->root.sgot = got; | |
1730 | } | |
1731 | ||
1732 | return got; | |
1733 | } | |
1734 | ||
1735 | /* Create function descriptor section (.opd). This section is called .opd | |
1736 | because it contains "official procedure descriptors". The "official" | |
1737 | refers to the fact that these descriptors are used when taking the address | |
1738 | of a procedure, thus ensuring a unique address for each procedure. */ | |
1739 | ||
1740 | static asection * | |
1741 | get_fptr (bfd *abfd, struct bfd_link_info *info, | |
1742 | struct elf64_ia64_link_hash_table *ia64_info) | |
1743 | { | |
1744 | asection *fptr; | |
1745 | bfd *dynobj; | |
1746 | ||
1747 | fptr = ia64_info->fptr_sec; | |
1748 | if (!fptr) | |
1749 | { | |
1750 | dynobj = ia64_info->root.dynobj; | |
1751 | if (!dynobj) | |
1752 | ia64_info->root.dynobj = dynobj = abfd; | |
1753 | ||
3d4d4302 AM |
1754 | fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd", |
1755 | (SEC_ALLOC | |
1756 | | SEC_LOAD | |
1757 | | SEC_HAS_CONTENTS | |
1758 | | SEC_IN_MEMORY | |
1759 | | (info->pie ? 0 | |
1760 | : SEC_READONLY) | |
1761 | | SEC_LINKER_CREATED)); | |
202e2356 NC |
1762 | if (!fptr |
1763 | || !bfd_set_section_alignment (dynobj, fptr, 4)) | |
1764 | { | |
1765 | BFD_ASSERT (0); | |
1766 | return NULL; | |
1767 | } | |
1768 | ||
1769 | ia64_info->fptr_sec = fptr; | |
1770 | ||
1771 | if (info->pie) | |
1772 | { | |
1773 | asection *fptr_rel; | |
3d4d4302 AM |
1774 | fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd", |
1775 | (SEC_ALLOC | SEC_LOAD | |
1776 | | SEC_HAS_CONTENTS | |
1777 | | SEC_IN_MEMORY | |
1778 | | SEC_LINKER_CREATED | |
1779 | | SEC_READONLY)); | |
202e2356 NC |
1780 | if (fptr_rel == NULL |
1781 | || !bfd_set_section_alignment (dynobj, fptr_rel, 3)) | |
1782 | { | |
1783 | BFD_ASSERT (0); | |
1784 | return NULL; | |
1785 | } | |
1786 | ||
1787 | ia64_info->rel_fptr_sec = fptr_rel; | |
1788 | } | |
1789 | } | |
1790 | ||
1791 | return fptr; | |
1792 | } | |
1793 | ||
1794 | static asection * | |
1795 | get_pltoff (bfd *abfd, struct elf64_ia64_link_hash_table *ia64_info) | |
1796 | { | |
1797 | asection *pltoff; | |
1798 | bfd *dynobj; | |
1799 | ||
1800 | pltoff = ia64_info->pltoff_sec; | |
1801 | if (!pltoff) | |
1802 | { | |
1803 | dynobj = ia64_info->root.dynobj; | |
1804 | if (!dynobj) | |
1805 | ia64_info->root.dynobj = dynobj = abfd; | |
1806 | ||
3d4d4302 AM |
1807 | pltoff = bfd_make_section_anyway_with_flags (dynobj, |
1808 | ELF_STRING_ia64_pltoff, | |
1809 | (SEC_ALLOC | |
1810 | | SEC_LOAD | |
1811 | | SEC_HAS_CONTENTS | |
1812 | | SEC_IN_MEMORY | |
1813 | | SEC_SMALL_DATA | |
1814 | | SEC_LINKER_CREATED)); | |
202e2356 NC |
1815 | if (!pltoff |
1816 | || !bfd_set_section_alignment (dynobj, pltoff, 4)) | |
1817 | { | |
1818 | BFD_ASSERT (0); | |
1819 | return NULL; | |
1820 | } | |
1821 | ||
1822 | ia64_info->pltoff_sec = pltoff; | |
1823 | } | |
1824 | ||
1825 | return pltoff; | |
1826 | } | |
1827 | ||
1828 | static asection * | |
1829 | get_reloc_section (bfd *abfd, | |
1830 | struct elf64_ia64_link_hash_table *ia64_info, | |
1831 | asection *sec, bfd_boolean create) | |
1832 | { | |
1833 | const char *srel_name; | |
1834 | asection *srel; | |
1835 | bfd *dynobj; | |
1836 | ||
1837 | srel_name = (bfd_elf_string_from_elf_section | |
1838 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
1839 | _bfd_elf_single_rel_hdr (sec)->sh_name)); | |
1840 | if (srel_name == NULL) | |
1841 | return NULL; | |
1842 | ||
1843 | BFD_ASSERT ((CONST_STRNEQ (srel_name, ".rela") | |
1844 | && strcmp (bfd_get_section_name (abfd, sec), | |
1845 | srel_name+5) == 0) | |
1846 | || (CONST_STRNEQ (srel_name, ".rel") | |
1847 | && strcmp (bfd_get_section_name (abfd, sec), | |
1848 | srel_name+4) == 0)); | |
1849 | ||
1850 | dynobj = ia64_info->root.dynobj; | |
1851 | if (!dynobj) | |
1852 | ia64_info->root.dynobj = dynobj = abfd; | |
1853 | ||
3d4d4302 | 1854 | srel = bfd_get_linker_section (dynobj, srel_name); |
202e2356 NC |
1855 | if (srel == NULL && create) |
1856 | { | |
3d4d4302 AM |
1857 | srel = bfd_make_section_anyway_with_flags (dynobj, srel_name, |
1858 | (SEC_ALLOC | SEC_LOAD | |
1859 | | SEC_HAS_CONTENTS | |
1860 | | SEC_IN_MEMORY | |
1861 | | SEC_LINKER_CREATED | |
1862 | | SEC_READONLY)); | |
202e2356 NC |
1863 | if (srel == NULL |
1864 | || !bfd_set_section_alignment (dynobj, srel, 3)) | |
1865 | return NULL; | |
1866 | } | |
1867 | ||
1868 | return srel; | |
1869 | } | |
1870 | ||
1871 | static bfd_boolean | |
1872 | count_dyn_reloc (bfd *abfd, struct elf64_ia64_dyn_sym_info *dyn_i, | |
1873 | asection *srel, int type) | |
1874 | { | |
1875 | struct elf64_ia64_dyn_reloc_entry *rent; | |
1876 | ||
1877 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) | |
1878 | if (rent->srel == srel && rent->type == type) | |
1879 | break; | |
1880 | ||
1881 | if (!rent) | |
1882 | { | |
1883 | rent = ((struct elf64_ia64_dyn_reloc_entry *) | |
1884 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent))); | |
1885 | if (!rent) | |
1886 | return FALSE; | |
1887 | ||
1888 | rent->next = dyn_i->reloc_entries; | |
1889 | rent->srel = srel; | |
1890 | rent->type = type; | |
1891 | rent->count = 0; | |
1892 | dyn_i->reloc_entries = rent; | |
1893 | } | |
1894 | rent->count++; | |
1895 | ||
1896 | return TRUE; | |
1897 | } | |
1898 | ||
1899 | static bfd_boolean | |
1900 | elf64_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
1901 | asection *sec, | |
1902 | const Elf_Internal_Rela *relocs) | |
1903 | { | |
1904 | struct elf64_ia64_link_hash_table *ia64_info; | |
1905 | const Elf_Internal_Rela *relend; | |
1906 | Elf_Internal_Shdr *symtab_hdr; | |
1907 | const Elf_Internal_Rela *rel; | |
1908 | asection *got, *fptr, *srel, *pltoff; | |
1909 | enum { | |
1910 | NEED_GOT = 1, | |
1911 | NEED_GOTX = 2, | |
1912 | NEED_FPTR = 4, | |
1913 | NEED_PLTOFF = 8, | |
1914 | NEED_MIN_PLT = 16, | |
1915 | NEED_FULL_PLT = 32, | |
1916 | NEED_DYNREL = 64, | |
1917 | NEED_LTOFF_FPTR = 128 | |
1918 | }; | |
1919 | int need_entry; | |
1920 | struct elf_link_hash_entry *h; | |
1921 | unsigned long r_symndx; | |
1922 | bfd_boolean maybe_dynamic; | |
1923 | ||
1924 | if (info->relocatable) | |
1925 | return TRUE; | |
1926 | ||
1927 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1928 | ia64_info = elf64_ia64_hash_table (info); | |
1929 | if (ia64_info == NULL) | |
1930 | return FALSE; | |
1931 | ||
1932 | got = fptr = srel = pltoff = NULL; | |
1933 | ||
1934 | relend = relocs + sec->reloc_count; | |
1935 | ||
1936 | /* We scan relocations first to create dynamic relocation arrays. We | |
1937 | modified get_dyn_sym_info to allow fast insertion and support fast | |
1938 | lookup in the next loop. */ | |
1939 | for (rel = relocs; rel < relend; ++rel) | |
1940 | { | |
1941 | r_symndx = ELF64_R_SYM (rel->r_info); | |
1942 | if (r_symndx >= symtab_hdr->sh_info) | |
1943 | { | |
1944 | long indx = r_symndx - symtab_hdr->sh_info; | |
1945 | h = elf_sym_hashes (abfd)[indx]; | |
1946 | while (h->root.type == bfd_link_hash_indirect | |
1947 | || h->root.type == bfd_link_hash_warning) | |
1948 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1949 | } | |
1950 | else | |
1951 | h = NULL; | |
1952 | ||
1953 | /* We can only get preliminary data on whether a symbol is | |
1954 | locally or externally defined, as not all of the input files | |
1955 | have yet been processed. Do something with what we know, as | |
1956 | this may help reduce memory usage and processing time later. */ | |
1957 | maybe_dynamic = (h && ((!info->executable | |
1958 | && (!SYMBOLIC_BIND (info, h) | |
1959 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
1960 | || !h->def_regular | |
1961 | || h->root.type == bfd_link_hash_defweak)); | |
1962 | ||
1963 | need_entry = 0; | |
1964 | switch (ELF64_R_TYPE (rel->r_info)) | |
1965 | { | |
1966 | case R_IA64_TPREL64MSB: | |
1967 | case R_IA64_TPREL64LSB: | |
1968 | case R_IA64_LTOFF_TPREL22: | |
1969 | case R_IA64_DTPREL32MSB: | |
1970 | case R_IA64_DTPREL32LSB: | |
1971 | case R_IA64_DTPREL64MSB: | |
1972 | case R_IA64_DTPREL64LSB: | |
1973 | case R_IA64_LTOFF_DTPREL22: | |
1974 | case R_IA64_DTPMOD64MSB: | |
1975 | case R_IA64_DTPMOD64LSB: | |
1976 | case R_IA64_LTOFF_DTPMOD22: | |
1977 | abort (); | |
1978 | break; | |
1979 | ||
1980 | case R_IA64_IPLTMSB: | |
1981 | case R_IA64_IPLTLSB: | |
1982 | break; | |
1983 | ||
1984 | case R_IA64_LTOFF_FPTR22: | |
1985 | case R_IA64_LTOFF_FPTR64I: | |
1986 | case R_IA64_LTOFF_FPTR32MSB: | |
1987 | case R_IA64_LTOFF_FPTR32LSB: | |
1988 | case R_IA64_LTOFF_FPTR64MSB: | |
1989 | case R_IA64_LTOFF_FPTR64LSB: | |
1990 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; | |
1991 | break; | |
1992 | ||
1993 | case R_IA64_FPTR64I: | |
1994 | case R_IA64_FPTR32MSB: | |
1995 | case R_IA64_FPTR32LSB: | |
1996 | case R_IA64_FPTR64MSB: | |
1997 | case R_IA64_FPTR64LSB: | |
1998 | if (info->shared || h) | |
1999 | need_entry = NEED_FPTR | NEED_DYNREL; | |
2000 | else | |
2001 | need_entry = NEED_FPTR; | |
2002 | break; | |
2003 | ||
2004 | case R_IA64_LTOFF22: | |
2005 | case R_IA64_LTOFF64I: | |
2006 | need_entry = NEED_GOT; | |
2007 | break; | |
2008 | ||
2009 | case R_IA64_LTOFF22X: | |
2010 | need_entry = NEED_GOTX; | |
2011 | break; | |
2012 | ||
2013 | case R_IA64_PLTOFF22: | |
2014 | case R_IA64_PLTOFF64I: | |
2015 | case R_IA64_PLTOFF64MSB: | |
2016 | case R_IA64_PLTOFF64LSB: | |
2017 | need_entry = NEED_PLTOFF; | |
2018 | if (h) | |
2019 | { | |
2020 | if (maybe_dynamic) | |
2021 | need_entry |= NEED_MIN_PLT; | |
2022 | } | |
2023 | else | |
2024 | { | |
2025 | (*info->callbacks->warning) | |
2026 | (info, _("@pltoff reloc against local symbol"), 0, | |
2027 | abfd, 0, (bfd_vma) 0); | |
2028 | } | |
2029 | break; | |
2030 | ||
2031 | case R_IA64_PCREL21B: | |
2032 | case R_IA64_PCREL60B: | |
2033 | /* Depending on where this symbol is defined, we may or may not | |
2034 | need a full plt entry. Only skip if we know we'll not need | |
2035 | the entry -- static or symbolic, and the symbol definition | |
2036 | has already been seen. */ | |
2037 | if (maybe_dynamic && rel->r_addend == 0) | |
2038 | need_entry = NEED_FULL_PLT; | |
2039 | break; | |
2040 | ||
2041 | case R_IA64_IMM14: | |
2042 | case R_IA64_IMM22: | |
2043 | case R_IA64_IMM64: | |
2044 | case R_IA64_DIR32MSB: | |
2045 | case R_IA64_DIR32LSB: | |
2046 | case R_IA64_DIR64MSB: | |
2047 | case R_IA64_DIR64LSB: | |
2048 | /* Shared objects will always need at least a REL relocation. */ | |
2049 | if (info->shared || maybe_dynamic) | |
2050 | need_entry = NEED_DYNREL; | |
2051 | break; | |
2052 | ||
2053 | case R_IA64_PCREL22: | |
2054 | case R_IA64_PCREL64I: | |
2055 | case R_IA64_PCREL32MSB: | |
2056 | case R_IA64_PCREL32LSB: | |
2057 | case R_IA64_PCREL64MSB: | |
2058 | case R_IA64_PCREL64LSB: | |
2059 | if (maybe_dynamic) | |
2060 | need_entry = NEED_DYNREL; | |
2061 | break; | |
2062 | } | |
2063 | ||
2064 | if (!need_entry) | |
2065 | continue; | |
2066 | ||
2067 | if ((need_entry & NEED_FPTR) != 0 | |
2068 | && rel->r_addend) | |
2069 | { | |
2070 | (*info->callbacks->warning) | |
2071 | (info, _("non-zero addend in @fptr reloc"), 0, | |
2072 | abfd, 0, (bfd_vma) 0); | |
2073 | } | |
2074 | ||
2075 | if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL) | |
2076 | return FALSE; | |
2077 | } | |
2078 | ||
2079 | /* Now, we only do lookup without insertion, which is very fast | |
2080 | with the modified get_dyn_sym_info. */ | |
2081 | for (rel = relocs; rel < relend; ++rel) | |
2082 | { | |
2083 | struct elf64_ia64_dyn_sym_info *dyn_i; | |
2084 | int dynrel_type = R_IA64_NONE; | |
2085 | ||
2086 | r_symndx = ELF64_R_SYM (rel->r_info); | |
2087 | if (r_symndx >= symtab_hdr->sh_info) | |
2088 | { | |
2089 | /* We're dealing with a global symbol -- find its hash entry | |
2090 | and mark it as being referenced. */ | |
2091 | long indx = r_symndx - symtab_hdr->sh_info; | |
2092 | h = elf_sym_hashes (abfd)[indx]; | |
2093 | while (h->root.type == bfd_link_hash_indirect | |
2094 | || h->root.type == bfd_link_hash_warning) | |
2095 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2096 | ||
81fbe831 AM |
2097 | /* PR15323, ref flags aren't set for references in the same |
2098 | object. */ | |
2099 | h->root.non_ir_ref = 1; | |
202e2356 NC |
2100 | h->ref_regular = 1; |
2101 | } | |
2102 | else | |
2103 | h = NULL; | |
2104 | ||
2105 | /* We can only get preliminary data on whether a symbol is | |
2106 | locally or externally defined, as not all of the input files | |
2107 | have yet been processed. Do something with what we know, as | |
2108 | this may help reduce memory usage and processing time later. */ | |
2109 | maybe_dynamic = (h && ((!info->executable | |
2110 | && (!SYMBOLIC_BIND (info, h) | |
2111 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
2112 | || !h->def_regular | |
2113 | || h->root.type == bfd_link_hash_defweak)); | |
2114 | ||
2115 | need_entry = 0; | |
2116 | switch (ELF64_R_TYPE (rel->r_info)) | |
2117 | { | |
2118 | case R_IA64_TPREL64MSB: | |
2119 | case R_IA64_TPREL64LSB: | |
2120 | case R_IA64_LTOFF_TPREL22: | |
2121 | case R_IA64_DTPREL32MSB: | |
2122 | case R_IA64_DTPREL32LSB: | |
2123 | case R_IA64_DTPREL64MSB: | |
2124 | case R_IA64_DTPREL64LSB: | |
2125 | case R_IA64_LTOFF_DTPREL22: | |
2126 | case R_IA64_DTPMOD64MSB: | |
2127 | case R_IA64_DTPMOD64LSB: | |
2128 | case R_IA64_LTOFF_DTPMOD22: | |
2129 | abort (); | |
2130 | break; | |
2131 | ||
2132 | case R_IA64_LTOFF_FPTR22: | |
2133 | case R_IA64_LTOFF_FPTR64I: | |
2134 | case R_IA64_LTOFF_FPTR32MSB: | |
2135 | case R_IA64_LTOFF_FPTR32LSB: | |
2136 | case R_IA64_LTOFF_FPTR64MSB: | |
2137 | case R_IA64_LTOFF_FPTR64LSB: | |
2138 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; | |
2139 | break; | |
2140 | ||
2141 | case R_IA64_FPTR64I: | |
2142 | case R_IA64_FPTR32MSB: | |
2143 | case R_IA64_FPTR32LSB: | |
2144 | case R_IA64_FPTR64MSB: | |
2145 | case R_IA64_FPTR64LSB: | |
2146 | if (info->shared || h) | |
2147 | need_entry = NEED_FPTR | NEED_DYNREL; | |
2148 | else | |
2149 | need_entry = NEED_FPTR; | |
2150 | dynrel_type = R_IA64_FPTR64LSB; | |
2151 | break; | |
2152 | ||
2153 | case R_IA64_LTOFF22: | |
2154 | case R_IA64_LTOFF64I: | |
2155 | need_entry = NEED_GOT; | |
2156 | break; | |
2157 | ||
2158 | case R_IA64_LTOFF22X: | |
2159 | need_entry = NEED_GOTX; | |
2160 | break; | |
2161 | ||
2162 | case R_IA64_PLTOFF22: | |
2163 | case R_IA64_PLTOFF64I: | |
2164 | case R_IA64_PLTOFF64MSB: | |
2165 | case R_IA64_PLTOFF64LSB: | |
2166 | need_entry = NEED_PLTOFF; | |
2167 | if (h) | |
2168 | { | |
2169 | if (maybe_dynamic) | |
2170 | need_entry |= NEED_MIN_PLT; | |
2171 | } | |
2172 | break; | |
2173 | ||
2174 | case R_IA64_PCREL21B: | |
2175 | case R_IA64_PCREL60B: | |
2176 | /* Depending on where this symbol is defined, we may or may not | |
2177 | need a full plt entry. Only skip if we know we'll not need | |
2178 | the entry -- static or symbolic, and the symbol definition | |
2179 | has already been seen. */ | |
2180 | if (maybe_dynamic && rel->r_addend == 0) | |
2181 | need_entry = NEED_FULL_PLT; | |
2182 | break; | |
2183 | ||
2184 | case R_IA64_IMM14: | |
2185 | case R_IA64_IMM22: | |
2186 | case R_IA64_IMM64: | |
2187 | case R_IA64_DIR32MSB: | |
2188 | case R_IA64_DIR32LSB: | |
2189 | case R_IA64_DIR64MSB: | |
2190 | case R_IA64_DIR64LSB: | |
2191 | /* Shared objects will always need at least a REL relocation. */ | |
2192 | if (info->shared || maybe_dynamic) | |
2193 | need_entry = NEED_DYNREL; | |
2194 | dynrel_type = R_IA64_DIR64LSB; | |
2195 | break; | |
2196 | ||
2197 | case R_IA64_IPLTMSB: | |
2198 | case R_IA64_IPLTLSB: | |
2199 | break; | |
2200 | ||
2201 | case R_IA64_PCREL22: | |
2202 | case R_IA64_PCREL64I: | |
2203 | case R_IA64_PCREL32MSB: | |
2204 | case R_IA64_PCREL32LSB: | |
2205 | case R_IA64_PCREL64MSB: | |
2206 | case R_IA64_PCREL64LSB: | |
2207 | if (maybe_dynamic) | |
2208 | need_entry = NEED_DYNREL; | |
2209 | dynrel_type = R_IA64_PCREL64LSB; | |
2210 | break; | |
2211 | } | |
2212 | ||
2213 | if (!need_entry) | |
2214 | continue; | |
2215 | ||
2216 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE); | |
2217 | ||
2218 | /* Record whether or not this is a local symbol. */ | |
2219 | dyn_i->h = h; | |
2220 | ||
2221 | /* Create what's needed. */ | |
2222 | if (need_entry & (NEED_GOT | NEED_GOTX)) | |
2223 | { | |
2224 | if (!got) | |
2225 | { | |
2226 | got = get_got (abfd, ia64_info); | |
2227 | if (!got) | |
2228 | return FALSE; | |
2229 | } | |
2230 | if (need_entry & NEED_GOT) | |
2231 | dyn_i->want_got = 1; | |
2232 | if (need_entry & NEED_GOTX) | |
2233 | dyn_i->want_gotx = 1; | |
2234 | } | |
2235 | if (need_entry & NEED_FPTR) | |
2236 | { | |
2237 | /* Create the .opd section. */ | |
2238 | if (!fptr) | |
2239 | { | |
2240 | fptr = get_fptr (abfd, info, ia64_info); | |
2241 | if (!fptr) | |
2242 | return FALSE; | |
2243 | } | |
2244 | dyn_i->want_fptr = 1; | |
2245 | } | |
2246 | if (need_entry & NEED_LTOFF_FPTR) | |
2247 | dyn_i->want_ltoff_fptr = 1; | |
2248 | if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT)) | |
2249 | { | |
2250 | if (!ia64_info->root.dynobj) | |
2251 | ia64_info->root.dynobj = abfd; | |
2252 | h->needs_plt = 1; | |
2253 | dyn_i->want_plt = 1; | |
2254 | } | |
2255 | if (need_entry & NEED_FULL_PLT) | |
2256 | dyn_i->want_plt2 = 1; | |
2257 | if (need_entry & NEED_PLTOFF) | |
2258 | { | |
2259 | /* This is needed here, in case @pltoff is used in a non-shared | |
2260 | link. */ | |
2261 | if (!pltoff) | |
2262 | { | |
2263 | pltoff = get_pltoff (abfd, ia64_info); | |
2264 | if (!pltoff) | |
2265 | return FALSE; | |
2266 | } | |
2267 | ||
2268 | dyn_i->want_pltoff = 1; | |
2269 | } | |
2270 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) | |
2271 | { | |
2272 | if (!srel) | |
2273 | { | |
2274 | srel = get_reloc_section (abfd, ia64_info, sec, TRUE); | |
2275 | if (!srel) | |
2276 | return FALSE; | |
2277 | } | |
2278 | if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type)) | |
2279 | return FALSE; | |
2280 | } | |
2281 | } | |
2282 | ||
2283 | return TRUE; | |
2284 | } | |
2285 | ||
2286 | /* For cleanliness, and potentially faster dynamic loading, allocate | |
2287 | external GOT entries first. */ | |
2288 | ||
2289 | static bfd_boolean | |
2290 | allocate_global_data_got (struct elf64_ia64_dyn_sym_info *dyn_i, | |
2291 | void * data) | |
2292 | { | |
2293 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; | |
2294 | ||
2295 | if ((dyn_i->want_got || dyn_i->want_gotx) | |
2296 | && ! dyn_i->want_fptr | |
2297 | && elf64_ia64_dynamic_symbol_p (dyn_i->h)) | |
2298 | { | |
2299 | /* GOT entry with FPTR is done by allocate_global_fptr_got. */ | |
2300 | dyn_i->got_offset = x->ofs; | |
2301 | x->ofs += 8; | |
2302 | } | |
2303 | return TRUE; | |
2304 | } | |
2305 | ||
2306 | /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */ | |
2307 | ||
2308 | static bfd_boolean | |
2309 | allocate_global_fptr_got (struct elf64_ia64_dyn_sym_info *dyn_i, | |
2310 | void * data) | |
2311 | { | |
2312 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; | |
2313 | ||
2314 | if (dyn_i->want_got | |
2315 | && dyn_i->want_fptr | |
2316 | && elf64_ia64_dynamic_symbol_p (dyn_i->h)) | |
2317 | { | |
2318 | dyn_i->got_offset = x->ofs; | |
2319 | x->ofs += 8; | |
2320 | } | |
2321 | return TRUE; | |
2322 | } | |
2323 | ||
2324 | /* Lastly, allocate all the GOT entries for local data. */ | |
2325 | ||
2326 | static bfd_boolean | |
2327 | allocate_local_got (struct elf64_ia64_dyn_sym_info *dyn_i, | |
2328 | void * data) | |
2329 | { | |
2330 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *) data; | |
2331 | ||
2332 | if ((dyn_i->want_got || dyn_i->want_gotx) | |
2333 | && !elf64_ia64_dynamic_symbol_p (dyn_i->h)) | |
2334 | { | |
2335 | dyn_i->got_offset = x->ofs; | |
2336 | x->ofs += 8; | |
2337 | } | |
2338 | return TRUE; | |
2339 | } | |
2340 | ||
2341 | /* Allocate function descriptors. We can do these for every function | |
2342 | in a main executable that is not exported. */ | |
2343 | ||
2344 | static bfd_boolean | |
2345 | allocate_fptr (struct elf64_ia64_dyn_sym_info *dyn_i, void * data) | |
2346 | { | |
2347 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *) data; | |
2348 | ||
2349 | if (dyn_i->want_fptr) | |
2350 | { | |
2351 | struct elf_link_hash_entry *h = dyn_i->h; | |
2352 | ||
2353 | if (h) | |
2354 | while (h->root.type == bfd_link_hash_indirect | |
2355 | || h->root.type == bfd_link_hash_warning) | |
2356 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2357 | ||
2358 | if (h == NULL || !h->def_dynamic) | |
2359 | { | |
2360 | /* A non dynamic symbol. */ | |
2361 | dyn_i->fptr_offset = x->ofs; | |
2362 | x->ofs += 16; | |
2363 | } | |
2364 | else | |
2365 | dyn_i->want_fptr = 0; | |
2366 | } | |
2367 | return TRUE; | |
2368 | } | |
2369 | ||
2370 | /* Allocate all the minimal PLT entries. */ | |
2371 | ||
2372 | static bfd_boolean | |
2373 | allocate_plt_entries (struct elf64_ia64_dyn_sym_info *dyn_i, | |
2374 | void * data ATTRIBUTE_UNUSED) | |
2375 | { | |
2376 | if (dyn_i->want_plt) | |
2377 | { | |
2378 | struct elf_link_hash_entry *h = dyn_i->h; | |
2379 | ||
2380 | if (h) | |
2381 | while (h->root.type == bfd_link_hash_indirect | |
2382 | || h->root.type == bfd_link_hash_warning) | |
2383 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2384 | ||
2385 | /* ??? Versioned symbols seem to lose NEEDS_PLT. */ | |
2386 | if (elf64_ia64_dynamic_symbol_p (h)) | |
2387 | { | |
2388 | dyn_i->want_pltoff = 1; | |
2389 | } | |
2390 | else | |
2391 | { | |
2392 | dyn_i->want_plt = 0; | |
2393 | dyn_i->want_plt2 = 0; | |
2394 | } | |
2395 | } | |
2396 | return TRUE; | |
2397 | } | |
2398 | ||
2399 | /* Allocate all the full PLT entries. */ | |
2400 | ||
2401 | static bfd_boolean | |
2402 | allocate_plt2_entries (struct elf64_ia64_dyn_sym_info *dyn_i, | |
2403 | void * data) | |
2404 | { | |
2405 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; | |
2406 | ||
2407 | if (dyn_i->want_plt2) | |
2408 | { | |
2409 | struct elf_link_hash_entry *h = dyn_i->h; | |
2410 | bfd_size_type ofs = x->ofs; | |
2411 | ||
2412 | dyn_i->plt2_offset = ofs; | |
2413 | x->ofs = ofs + PLT_FULL_ENTRY_SIZE; | |
2414 | ||
2415 | while (h->root.type == bfd_link_hash_indirect | |
2416 | || h->root.type == bfd_link_hash_warning) | |
2417 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2418 | dyn_i->h->plt.offset = ofs; | |
2419 | } | |
2420 | return TRUE; | |
2421 | } | |
2422 | ||
2423 | /* Allocate all the PLTOFF entries requested by relocations and | |
2424 | plt entries. We can't share space with allocated FPTR entries, | |
2425 | because the latter are not necessarily addressable by the GP. | |
2426 | ??? Relaxation might be able to determine that they are. */ | |
2427 | ||
2428 | static bfd_boolean | |
2429 | allocate_pltoff_entries (struct elf64_ia64_dyn_sym_info *dyn_i, | |
2430 | void * data) | |
2431 | { | |
2432 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; | |
2433 | ||
2434 | if (dyn_i->want_pltoff) | |
2435 | { | |
2436 | dyn_i->pltoff_offset = x->ofs; | |
2437 | x->ofs += 16; | |
2438 | } | |
2439 | return TRUE; | |
2440 | } | |
2441 | ||
2442 | /* Allocate dynamic relocations for those symbols that turned out | |
2443 | to be dynamic. */ | |
2444 | ||
2445 | static bfd_boolean | |
2446 | allocate_dynrel_entries (struct elf64_ia64_dyn_sym_info *dyn_i, | |
2447 | void * data) | |
2448 | { | |
2449 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; | |
2450 | struct elf64_ia64_link_hash_table *ia64_info; | |
2451 | struct elf64_ia64_dyn_reloc_entry *rent; | |
2452 | bfd_boolean dynamic_symbol, shared, resolved_zero; | |
2453 | struct elf64_ia64_link_hash_entry *h_ia64; | |
2454 | ||
2455 | ia64_info = elf64_ia64_hash_table (x->info); | |
2456 | if (ia64_info == NULL) | |
2457 | return FALSE; | |
2458 | ||
2459 | /* Note that this can't be used in relation to FPTR relocs below. */ | |
2460 | dynamic_symbol = elf64_ia64_dynamic_symbol_p (dyn_i->h); | |
2461 | ||
2462 | shared = x->info->shared; | |
2463 | resolved_zero = (dyn_i->h | |
2464 | && ELF_ST_VISIBILITY (dyn_i->h->other) | |
2465 | && dyn_i->h->root.type == bfd_link_hash_undefweak); | |
2466 | ||
2467 | /* Take care of the GOT and PLT relocations. */ | |
2468 | ||
2469 | if ((!resolved_zero | |
2470 | && (dynamic_symbol || shared) | |
2471 | && (dyn_i->want_got || dyn_i->want_gotx)) | |
2472 | || (dyn_i->want_ltoff_fptr | |
2473 | && dyn_i->h | |
2474 | && dyn_i->h->def_dynamic)) | |
2475 | { | |
2476 | /* VMS: FIX64. */ | |
2477 | if (dyn_i->h != NULL && dyn_i->h->def_dynamic) | |
2478 | { | |
2479 | h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; | |
2480 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += | |
2481 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); | |
2482 | ia64_info->fixups_sec->size += | |
2483 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); | |
2484 | } | |
2485 | } | |
2486 | ||
2487 | if (ia64_info->rel_fptr_sec && dyn_i->want_fptr) | |
2488 | { | |
2489 | /* VMS: only image reloc. */ | |
2490 | if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak) | |
2491 | ia64_info->rel_fptr_sec->size += sizeof (Elf64_External_Rela); | |
2492 | } | |
2493 | ||
2494 | if (!resolved_zero && dyn_i->want_pltoff) | |
2495 | { | |
2496 | /* VMS: FIXFD. */ | |
2497 | if (dyn_i->h != NULL && dyn_i->h->def_dynamic) | |
2498 | { | |
2499 | h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; | |
2500 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += | |
2501 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); | |
2502 | ia64_info->fixups_sec->size += | |
2503 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); | |
2504 | } | |
2505 | } | |
2506 | ||
2507 | /* Take care of the normal data relocations. */ | |
2508 | ||
2509 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) | |
2510 | { | |
2511 | int count = rent->count; | |
2512 | ||
2513 | switch (rent->type) | |
2514 | { | |
2515 | case R_IA64_FPTR32LSB: | |
2516 | case R_IA64_FPTR64LSB: | |
2517 | /* Allocate one iff !want_fptr and not PIE, which by this point | |
2518 | will be true only if we're actually allocating one statically | |
2519 | in the main executable. Position independent executables | |
2520 | need a relative reloc. */ | |
2521 | if (dyn_i->want_fptr && !x->info->pie) | |
2522 | continue; | |
2523 | break; | |
2524 | case R_IA64_PCREL32LSB: | |
2525 | case R_IA64_PCREL64LSB: | |
2526 | if (!dynamic_symbol) | |
2527 | continue; | |
2528 | break; | |
2529 | case R_IA64_DIR32LSB: | |
2530 | case R_IA64_DIR64LSB: | |
2531 | if (!dynamic_symbol && !shared) | |
2532 | continue; | |
2533 | break; | |
2534 | case R_IA64_IPLTLSB: | |
2535 | if (!dynamic_symbol && !shared) | |
2536 | continue; | |
2537 | /* Use two REL relocations for IPLT relocations | |
2538 | against local symbols. */ | |
2539 | if (!dynamic_symbol) | |
2540 | count *= 2; | |
2541 | break; | |
2542 | case R_IA64_DTPREL32LSB: | |
2543 | case R_IA64_TPREL64LSB: | |
2544 | case R_IA64_DTPREL64LSB: | |
2545 | case R_IA64_DTPMOD64LSB: | |
2546 | break; | |
2547 | default: | |
2548 | abort (); | |
2549 | } | |
2550 | ||
2551 | /* Add a fixup. */ | |
2552 | if (!dynamic_symbol) | |
2553 | abort (); | |
2554 | ||
2555 | h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; | |
2556 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += | |
2557 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); | |
2558 | ia64_info->fixups_sec->size += | |
2559 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); | |
2560 | } | |
2561 | ||
2562 | return TRUE; | |
2563 | } | |
2564 | ||
2565 | static bfd_boolean | |
2566 | elf64_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2567 | struct elf_link_hash_entry *h) | |
2568 | { | |
2569 | /* ??? Undefined symbols with PLT entries should be re-defined | |
2570 | to be the PLT entry. */ | |
2571 | ||
2572 | /* If this is a weak symbol, and there is a real definition, the | |
2573 | processor independent code will have arranged for us to see the | |
2574 | real definition first, and we can just use the same value. */ | |
2575 | if (h->u.weakdef != NULL) | |
2576 | { | |
2577 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
2578 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2579 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2580 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2581 | return TRUE; | |
2582 | } | |
2583 | ||
2584 | /* If this is a reference to a symbol defined by a dynamic object which | |
2585 | is not a function, we might allocate the symbol in our .dynbss section | |
2586 | and allocate a COPY dynamic relocation. | |
2587 | ||
2588 | But IA-64 code is canonically PIC, so as a rule we can avoid this sort | |
2589 | of hackery. */ | |
2590 | ||
2591 | return TRUE; | |
2592 | } | |
2593 | ||
2594 | static bfd_boolean | |
2595 | elf64_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2596 | struct bfd_link_info *info) | |
2597 | { | |
2598 | struct elf64_ia64_allocate_data data; | |
2599 | struct elf64_ia64_link_hash_table *ia64_info; | |
2600 | asection *sec; | |
2601 | bfd *dynobj; | |
2602 | struct elf_link_hash_table *hash_table; | |
2603 | ||
2604 | hash_table = elf_hash_table (info); | |
2605 | dynobj = hash_table->dynobj; | |
2606 | ia64_info = elf64_ia64_hash_table (info); | |
2607 | if (ia64_info == NULL) | |
2608 | return FALSE; | |
2609 | BFD_ASSERT(dynobj != NULL); | |
2610 | data.info = info; | |
2611 | ||
2612 | /* Allocate the GOT entries. */ | |
2613 | ||
2614 | if (ia64_info->root.sgot) | |
2615 | { | |
2616 | data.ofs = 0; | |
2617 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); | |
2618 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); | |
2619 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); | |
2620 | ia64_info->root.sgot->size = data.ofs; | |
2621 | } | |
2622 | ||
2623 | /* Allocate the FPTR entries. */ | |
2624 | ||
2625 | if (ia64_info->fptr_sec) | |
2626 | { | |
2627 | data.ofs = 0; | |
2628 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data); | |
2629 | ia64_info->fptr_sec->size = data.ofs; | |
2630 | } | |
2631 | ||
2632 | /* Now that we've seen all of the input files, we can decide which | |
2633 | symbols need plt entries. Allocate the minimal PLT entries first. | |
2634 | We do this even though dynamic_sections_created may be FALSE, because | |
2635 | this has the side-effect of clearing want_plt and want_plt2. */ | |
2636 | ||
2637 | data.ofs = 0; | |
2638 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data); | |
2639 | ||
2640 | /* Align the pointer for the plt2 entries. */ | |
2641 | data.ofs = (data.ofs + 31) & (bfd_vma) -32; | |
2642 | ||
2643 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data); | |
2644 | if (data.ofs != 0 || ia64_info->root.dynamic_sections_created) | |
2645 | { | |
2646 | /* FIXME: we always reserve the memory for dynamic linker even if | |
2647 | there are no PLT entries since dynamic linker may assume the | |
2648 | reserved memory always exists. */ | |
2649 | ||
2650 | BFD_ASSERT (ia64_info->root.dynamic_sections_created); | |
2651 | ||
2652 | ia64_info->root.splt->size = data.ofs; | |
2653 | } | |
2654 | ||
2655 | /* Allocate the PLTOFF entries. */ | |
2656 | ||
2657 | if (ia64_info->pltoff_sec) | |
2658 | { | |
2659 | data.ofs = 0; | |
2660 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data); | |
2661 | ia64_info->pltoff_sec->size = data.ofs; | |
2662 | } | |
2663 | ||
2664 | if (ia64_info->root.dynamic_sections_created) | |
2665 | { | |
2666 | /* Allocate space for the dynamic relocations that turned out to be | |
2667 | required. */ | |
2668 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data); | |
2669 | } | |
2670 | ||
2671 | /* We have now determined the sizes of the various dynamic sections. | |
2672 | Allocate memory for them. */ | |
2673 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) | |
2674 | { | |
2675 | bfd_boolean strip; | |
2676 | ||
2677 | if (!(sec->flags & SEC_LINKER_CREATED)) | |
2678 | continue; | |
2679 | ||
2680 | /* If we don't need this section, strip it from the output file. | |
2681 | There were several sections primarily related to dynamic | |
2682 | linking that must be create before the linker maps input | |
2683 | sections to output sections. The linker does that before | |
2684 | bfd_elf_size_dynamic_sections is called, and it is that | |
2685 | function which decides whether anything needs to go into | |
2686 | these sections. */ | |
2687 | ||
2688 | strip = (sec->size == 0); | |
2689 | ||
2690 | if (sec == ia64_info->root.sgot) | |
2691 | strip = FALSE; | |
2692 | else if (sec == ia64_info->root.srelgot) | |
2693 | { | |
2694 | if (strip) | |
2695 | ia64_info->root.srelgot = NULL; | |
2696 | else | |
2697 | /* We use the reloc_count field as a counter if we need to | |
2698 | copy relocs into the output file. */ | |
2699 | sec->reloc_count = 0; | |
2700 | } | |
2701 | else if (sec == ia64_info->fptr_sec) | |
2702 | { | |
2703 | if (strip) | |
2704 | ia64_info->fptr_sec = NULL; | |
2705 | } | |
2706 | else if (sec == ia64_info->rel_fptr_sec) | |
2707 | { | |
2708 | if (strip) | |
2709 | ia64_info->rel_fptr_sec = NULL; | |
2710 | else | |
2711 | /* We use the reloc_count field as a counter if we need to | |
2712 | copy relocs into the output file. */ | |
2713 | sec->reloc_count = 0; | |
2714 | } | |
2715 | else if (sec == ia64_info->root.splt) | |
2716 | { | |
2717 | if (strip) | |
2718 | ia64_info->root.splt = NULL; | |
2719 | } | |
2720 | else if (sec == ia64_info->pltoff_sec) | |
2721 | { | |
2722 | if (strip) | |
2723 | ia64_info->pltoff_sec = NULL; | |
2724 | } | |
2725 | else if (sec == ia64_info->fixups_sec) | |
2726 | { | |
2727 | if (strip) | |
2728 | ia64_info->fixups_sec = NULL; | |
2729 | } | |
2730 | else if (sec == ia64_info->transfer_sec) | |
2731 | { | |
2732 | ; | |
2733 | } | |
2734 | else | |
2735 | { | |
2736 | const char *name; | |
2737 | ||
2738 | /* It's OK to base decisions on the section name, because none | |
2739 | of the dynobj section names depend upon the input files. */ | |
2740 | name = bfd_get_section_name (dynobj, sec); | |
2741 | ||
2742 | if (strcmp (name, ".got.plt") == 0) | |
2743 | strip = FALSE; | |
2744 | else if (CONST_STRNEQ (name, ".rel")) | |
2745 | { | |
2746 | if (!strip) | |
2747 | { | |
2748 | /* We use the reloc_count field as a counter if we need to | |
2749 | copy relocs into the output file. */ | |
2750 | sec->reloc_count = 0; | |
2751 | } | |
2752 | } | |
2753 | else | |
2754 | continue; | |
2755 | } | |
2756 | ||
2757 | if (strip) | |
2758 | sec->flags |= SEC_EXCLUDE; | |
2759 | else | |
2760 | { | |
2761 | /* Allocate memory for the section contents. */ | |
2762 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); | |
2763 | if (sec->contents == NULL && sec->size != 0) | |
2764 | return FALSE; | |
2765 | } | |
2766 | } | |
2767 | ||
2768 | if (elf_hash_table (info)->dynamic_sections_created) | |
2769 | { | |
2770 | bfd *abfd; | |
2771 | asection *dynsec; | |
2772 | asection *dynstrsec; | |
2773 | Elf_Internal_Dyn dyn; | |
2774 | const struct elf_backend_data *bed; | |
2775 | unsigned int shl_num = 0; | |
2776 | bfd_vma fixups_off = 0; | |
2777 | bfd_vma strdyn_off; | |
2778 | unsigned int time_hi, time_lo; | |
2779 | ||
2780 | /* The .dynamic section must exist and be empty. */ | |
3d4d4302 | 2781 | dynsec = bfd_get_linker_section (hash_table->dynobj, ".dynamic"); |
202e2356 NC |
2782 | BFD_ASSERT (dynsec != NULL); |
2783 | BFD_ASSERT (dynsec->size == 0); | |
2784 | ||
3d4d4302 | 2785 | dynstrsec = bfd_get_linker_section (hash_table->dynobj, ".vmsdynstr"); |
202e2356 NC |
2786 | BFD_ASSERT (dynstrsec != NULL); |
2787 | BFD_ASSERT (dynstrsec->size == 0); | |
2788 | dynstrsec->size = 1; /* Initial blank. */ | |
2789 | ||
2790 | /* Ident + link time. */ | |
2791 | vms_get_time (&time_hi, &time_lo); | |
2792 | ||
2793 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_IDENT, 0)) | |
2794 | return FALSE; | |
2795 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_LINKTIME, | |
2796 | (((bfd_uint64_t)time_hi) << 32) | |
2797 | + time_lo)) | |
2798 | return FALSE; | |
2799 | ||
2800 | /* Strtab. */ | |
2801 | strdyn_off = dynsec->size; | |
2802 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_STRTAB_OFFSET, 0)) | |
2803 | return FALSE; | |
2804 | if (!_bfd_elf_add_dynamic_entry (info, DT_STRSZ, 0)) | |
2805 | return FALSE; | |
2806 | ||
2807 | /* PLTGOT */ | |
2808 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_PLTGOT_SEG, 0)) | |
2809 | return FALSE; | |
2810 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_PLTGOT_OFFSET, 0)) | |
2811 | return FALSE; | |
2812 | ||
2813 | /* Misc. */ | |
2814 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FPMODE, 0x9800000)) | |
2815 | return FALSE; | |
2816 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_LNKFLAGS, | |
2817 | VMS_LF_IMGSTA | VMS_LF_MAIN)) | |
2818 | return FALSE; | |
2819 | ||
2820 | /* Add entries for shared libraries. */ | |
2821 | for (abfd = info->input_bfds; abfd; abfd = abfd->link_next) | |
2822 | { | |
2823 | char *soname; | |
2824 | size_t soname_len; | |
2825 | bfd_size_type strindex; | |
2826 | bfd_byte *newcontents; | |
2827 | bfd_vma fixups_shl_off; | |
2828 | ||
2829 | if (!(abfd->flags & DYNAMIC)) | |
2830 | continue; | |
2831 | BFD_ASSERT (abfd->xvec == output_bfd->xvec); | |
2832 | ||
2833 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_NEEDED_IDENT, | |
2834 | elf_ia64_vms_ident (abfd))) | |
2835 | return FALSE; | |
2836 | ||
2837 | soname = vms_get_module_name (abfd->filename, TRUE); | |
2838 | if (soname == NULL) | |
2839 | return FALSE; | |
2840 | strindex = dynstrsec->size; | |
2841 | soname_len = strlen (soname) + 1; | |
2842 | newcontents = (bfd_byte *) bfd_realloc (dynstrsec->contents, | |
2843 | strindex + soname_len); | |
2844 | if (newcontents == NULL) | |
2845 | return FALSE; | |
2846 | memcpy (newcontents + strindex, soname, soname_len); | |
2847 | dynstrsec->size += soname_len; | |
2848 | dynstrsec->contents = newcontents; | |
2849 | ||
2850 | if (!_bfd_elf_add_dynamic_entry (info, DT_NEEDED, strindex)) | |
2851 | return FALSE; | |
2852 | ||
2853 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FIXUP_NEEDED, | |
2854 | shl_num)) | |
2855 | return FALSE; | |
2856 | shl_num++; | |
2857 | ||
2858 | /* The fixups_off was in fact containing the size of the fixup | |
2859 | section. Remap into the offset. */ | |
2860 | fixups_shl_off = elf_ia64_vms_tdata (abfd)->fixups_off; | |
2861 | elf_ia64_vms_tdata (abfd)->fixups_off = fixups_off; | |
2862 | ||
2863 | if (!_bfd_elf_add_dynamic_entry | |
2864 | (info, DT_IA_64_VMS_FIXUP_RELA_CNT, | |
2865 | fixups_shl_off / sizeof (Elf64_External_VMS_IMAGE_FIXUP))) | |
2866 | return FALSE; | |
2867 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FIXUP_RELA_OFF, | |
2868 | fixups_off)) | |
2869 | return FALSE; | |
2870 | fixups_off += fixups_shl_off; | |
2871 | } | |
2872 | ||
2873 | /* Unwind. */ | |
2874 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWINDSZ, 0)) | |
2875 | return FALSE; | |
2876 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_CODSEG, 0)) | |
2877 | return FALSE; | |
2878 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_INFOSEG, 0)) | |
2879 | return FALSE; | |
2880 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_OFFSET, 0)) | |
2881 | return FALSE; | |
2882 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_SEG, 0)) | |
2883 | return FALSE; | |
2884 | ||
2885 | if (!_bfd_elf_add_dynamic_entry (info, DT_NULL, 0xdead)) | |
2886 | return FALSE; | |
2887 | ||
2888 | /* Fix the strtab entries. */ | |
2889 | bed = get_elf_backend_data (hash_table->dynobj); | |
2890 | ||
2891 | if (dynstrsec->size > 1) | |
2892 | dynstrsec->contents[0] = 0; | |
2893 | else | |
2894 | dynstrsec->size = 0; | |
2895 | ||
2896 | /* Note: one 'spare' (ie DT_NULL) entry is added by | |
2897 | bfd_elf_size_dynsym_hash_dynstr. */ | |
2898 | dyn.d_tag = DT_IA_64_VMS_STRTAB_OFFSET; | |
2899 | dyn.d_un.d_val = dynsec->size /* + sizeof (Elf64_External_Dyn) */; | |
2900 | bed->s->swap_dyn_out (hash_table->dynobj, &dyn, | |
2901 | dynsec->contents + strdyn_off); | |
2902 | ||
2903 | dyn.d_tag = DT_STRSZ; | |
2904 | dyn.d_un.d_val = dynstrsec->size; | |
2905 | bed->s->swap_dyn_out (hash_table->dynobj, &dyn, | |
2906 | dynsec->contents + strdyn_off + bed->s->sizeof_dyn); | |
2907 | ||
2908 | elf_ia64_vms_tdata (output_bfd)->needed_count = shl_num; | |
2909 | ||
2910 | /* Note section. */ | |
2911 | if (!create_ia64_vms_notes (output_bfd, info, time_hi, time_lo)) | |
2912 | return FALSE; | |
2913 | } | |
2914 | ||
2915 | /* ??? Perhaps force __gp local. */ | |
2916 | ||
2917 | return TRUE; | |
2918 | } | |
2919 | ||
2920 | static void | |
2921 | elf64_ia64_install_fixup (bfd *output_bfd, | |
2922 | struct elf64_ia64_link_hash_table *ia64_info, | |
2923 | struct elf_link_hash_entry *h, | |
2924 | unsigned int type, asection *sec, bfd_vma offset, | |
2925 | bfd_vma addend) | |
2926 | { | |
2927 | asection *relsec; | |
2928 | Elf64_External_VMS_IMAGE_FIXUP *fixup; | |
2929 | struct elf64_ia64_link_hash_entry *h_ia64; | |
2930 | bfd_vma fixoff; | |
2931 | Elf_Internal_Phdr *phdr; | |
2932 | ||
2933 | if (h == NULL || !h->def_dynamic) | |
2934 | abort (); | |
2935 | ||
2936 | h_ia64 = (struct elf64_ia64_link_hash_entry *) h; | |
2937 | fixoff = elf_ia64_vms_tdata (h_ia64->shl)->fixups_off; | |
2938 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += | |
2939 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); | |
2940 | relsec = ia64_info->fixups_sec; | |
2941 | ||
2942 | fixup = (Elf64_External_VMS_IMAGE_FIXUP *)(relsec->contents + fixoff); | |
2943 | offset += sec->output_section->vma + sec->output_offset; | |
2944 | ||
2945 | /* FIXME: this is slow. We should cache the last one used, or create a | |
2946 | map. */ | |
2947 | phdr = _bfd_elf_find_segment_containing_section | |
2948 | (output_bfd, sec->output_section); | |
2949 | BFD_ASSERT (phdr != NULL); | |
2950 | ||
2951 | bfd_putl64 (offset - phdr->p_vaddr, fixup->fixup_offset); | |
2952 | bfd_putl32 (type, fixup->type); | |
2953 | bfd_putl32 (phdr - elf_tdata (output_bfd)->phdr, fixup->fixup_seg); | |
2954 | bfd_putl64 (addend, fixup->addend); | |
2955 | bfd_putl32 (h->root.u.def.value, fixup->symvec_index); | |
2956 | bfd_putl32 (2, fixup->data_type); | |
2957 | } | |
2958 | ||
2959 | /* Store an entry for target address TARGET_ADDR in the linkage table | |
2960 | and return the gp-relative address of the linkage table entry. */ | |
2961 | ||
2962 | static bfd_vma | |
2963 | set_got_entry (bfd *abfd, struct bfd_link_info *info, | |
2964 | struct elf64_ia64_dyn_sym_info *dyn_i, | |
2965 | bfd_vma addend, bfd_vma value, unsigned int dyn_r_type) | |
2966 | { | |
2967 | struct elf64_ia64_link_hash_table *ia64_info; | |
2968 | asection *got_sec; | |
2969 | bfd_boolean done; | |
2970 | bfd_vma got_offset; | |
2971 | ||
2972 | ia64_info = elf64_ia64_hash_table (info); | |
2973 | if (ia64_info == NULL) | |
2974 | return 0; | |
2975 | ||
2976 | got_sec = ia64_info->root.sgot; | |
2977 | ||
2978 | switch (dyn_r_type) | |
2979 | { | |
2980 | case R_IA64_TPREL64LSB: | |
2981 | case R_IA64_DTPMOD64LSB: | |
2982 | case R_IA64_DTPREL32LSB: | |
2983 | case R_IA64_DTPREL64LSB: | |
2984 | abort (); | |
2985 | break; | |
2986 | default: | |
2987 | done = dyn_i->got_done; | |
2988 | dyn_i->got_done = TRUE; | |
2989 | got_offset = dyn_i->got_offset; | |
2990 | break; | |
2991 | } | |
2992 | ||
2993 | BFD_ASSERT ((got_offset & 7) == 0); | |
2994 | ||
2995 | if (! done) | |
2996 | { | |
2997 | /* Store the target address in the linkage table entry. */ | |
2998 | bfd_put_64 (abfd, value, got_sec->contents + got_offset); | |
2999 | ||
3000 | /* Install a dynamic relocation if needed. */ | |
3001 | if (((info->shared | |
3002 | && (!dyn_i->h | |
3003 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT | |
3004 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) | |
3005 | || elf64_ia64_dynamic_symbol_p (dyn_i->h)) | |
3006 | && (!dyn_i->want_ltoff_fptr | |
3007 | || !info->pie | |
3008 | || !dyn_i->h | |
3009 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) | |
3010 | { | |
3011 | if (!dyn_i->h || !dyn_i->h->def_dynamic) | |
3012 | { | |
3013 | dyn_r_type = R_IA64_REL64LSB; | |
3014 | addend = value; | |
3015 | } | |
3016 | ||
3017 | /* VMS: install a FIX32 or FIX64. */ | |
3018 | switch (dyn_r_type) | |
3019 | { | |
3020 | case R_IA64_DIR32LSB: | |
3021 | case R_IA64_FPTR32LSB: | |
3022 | dyn_r_type = R_IA64_VMS_FIX32; | |
3023 | break; | |
3024 | case R_IA64_DIR64LSB: | |
3025 | case R_IA64_FPTR64LSB: | |
3026 | dyn_r_type = R_IA64_VMS_FIX64; | |
3027 | break; | |
3028 | default: | |
3029 | BFD_ASSERT (FALSE); | |
3030 | break; | |
3031 | } | |
3032 | elf64_ia64_install_fixup | |
3033 | (info->output_bfd, ia64_info, dyn_i->h, | |
3034 | dyn_r_type, got_sec, got_offset, addend); | |
3035 | } | |
3036 | } | |
3037 | ||
3038 | /* Return the address of the linkage table entry. */ | |
3039 | value = (got_sec->output_section->vma | |
3040 | + got_sec->output_offset | |
3041 | + got_offset); | |
3042 | ||
3043 | return value; | |
3044 | } | |
3045 | ||
3046 | /* Fill in a function descriptor consisting of the function's code | |
3047 | address and its global pointer. Return the descriptor's address. */ | |
3048 | ||
3049 | static bfd_vma | |
3050 | set_fptr_entry (bfd *abfd, struct bfd_link_info *info, | |
3051 | struct elf64_ia64_dyn_sym_info *dyn_i, | |
3052 | bfd_vma value) | |
3053 | { | |
3054 | struct elf64_ia64_link_hash_table *ia64_info; | |
3055 | asection *fptr_sec; | |
3056 | ||
3057 | ia64_info = elf64_ia64_hash_table (info); | |
3058 | if (ia64_info == NULL) | |
3059 | return 0; | |
3060 | ||
3061 | fptr_sec = ia64_info->fptr_sec; | |
3062 | ||
3063 | if (!dyn_i->fptr_done) | |
3064 | { | |
3065 | dyn_i->fptr_done = 1; | |
3066 | ||
3067 | /* Fill in the function descriptor. */ | |
3068 | bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset); | |
3069 | bfd_put_64 (abfd, _bfd_get_gp_value (abfd), | |
3070 | fptr_sec->contents + dyn_i->fptr_offset + 8); | |
3071 | } | |
3072 | ||
3073 | /* Return the descriptor's address. */ | |
3074 | value = (fptr_sec->output_section->vma | |
3075 | + fptr_sec->output_offset | |
3076 | + dyn_i->fptr_offset); | |
3077 | ||
3078 | return value; | |
3079 | } | |
3080 | ||
3081 | /* Fill in a PLTOFF entry consisting of the function's code address | |
3082 | and its global pointer. Return the descriptor's address. */ | |
3083 | ||
3084 | static bfd_vma | |
3085 | set_pltoff_entry (bfd *abfd, struct bfd_link_info *info, | |
3086 | struct elf64_ia64_dyn_sym_info *dyn_i, | |
3087 | bfd_vma value, bfd_boolean is_plt) | |
3088 | { | |
3089 | struct elf64_ia64_link_hash_table *ia64_info; | |
3090 | asection *pltoff_sec; | |
3091 | ||
3092 | ia64_info = elf64_ia64_hash_table (info); | |
3093 | if (ia64_info == NULL) | |
3094 | return 0; | |
3095 | ||
3096 | pltoff_sec = ia64_info->pltoff_sec; | |
3097 | ||
3098 | /* Don't do anything if this symbol uses a real PLT entry. In | |
3099 | that case, we'll fill this in during finish_dynamic_symbol. */ | |
3100 | if ((! dyn_i->want_plt || is_plt) | |
3101 | && !dyn_i->pltoff_done) | |
3102 | { | |
3103 | bfd_vma gp = _bfd_get_gp_value (abfd); | |
3104 | ||
3105 | /* Fill in the function descriptor. */ | |
3106 | bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset); | |
3107 | bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8); | |
3108 | ||
3109 | /* Install dynamic relocations if needed. */ | |
3110 | if (!is_plt | |
3111 | && info->shared | |
3112 | && (!dyn_i->h | |
3113 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT | |
3114 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) | |
3115 | { | |
3116 | /* VMS: */ | |
3117 | abort (); | |
3118 | } | |
3119 | ||
3120 | dyn_i->pltoff_done = 1; | |
3121 | } | |
3122 | ||
3123 | /* Return the descriptor's address. */ | |
3124 | value = (pltoff_sec->output_section->vma | |
3125 | + pltoff_sec->output_offset | |
3126 | + dyn_i->pltoff_offset); | |
3127 | ||
3128 | return value; | |
3129 | } | |
3130 | ||
3131 | /* Called through qsort to sort the .IA_64.unwind section during a | |
3132 | non-relocatable link. Set elf64_ia64_unwind_entry_compare_bfd | |
3133 | to the output bfd so we can do proper endianness frobbing. */ | |
3134 | ||
3135 | static bfd *elf64_ia64_unwind_entry_compare_bfd; | |
3136 | ||
3137 | static int | |
3138 | elf64_ia64_unwind_entry_compare (const void * a, const void * b) | |
3139 | { | |
3140 | bfd_vma av, bv; | |
3141 | ||
3142 | av = bfd_get_64 (elf64_ia64_unwind_entry_compare_bfd, a); | |
3143 | bv = bfd_get_64 (elf64_ia64_unwind_entry_compare_bfd, b); | |
3144 | ||
3145 | return (av < bv ? -1 : av > bv ? 1 : 0); | |
3146 | } | |
3147 | ||
3148 | /* Make sure we've got ourselves a nice fat __gp value. */ | |
3149 | static bfd_boolean | |
3150 | elf64_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final) | |
3151 | { | |
3152 | bfd_vma min_vma = (bfd_vma) -1, max_vma = 0; | |
3153 | bfd_vma min_short_vma = min_vma, max_short_vma = 0; | |
3154 | struct elf_link_hash_entry *gp; | |
3155 | bfd_vma gp_val; | |
3156 | asection *os; | |
3157 | struct elf64_ia64_link_hash_table *ia64_info; | |
3158 | ||
3159 | ia64_info = elf64_ia64_hash_table (info); | |
3160 | if (ia64_info == NULL) | |
3161 | return FALSE; | |
3162 | ||
3163 | /* Find the min and max vma of all sections marked short. Also collect | |
3164 | min and max vma of any type, for use in selecting a nice gp. */ | |
3165 | for (os = abfd->sections; os ; os = os->next) | |
3166 | { | |
3167 | bfd_vma lo, hi; | |
3168 | ||
3169 | if ((os->flags & SEC_ALLOC) == 0) | |
3170 | continue; | |
3171 | ||
3172 | lo = os->vma; | |
3173 | /* When this function is called from elfNN_ia64_final_link | |
3174 | the correct value to use is os->size. When called from | |
3175 | elfNN_ia64_relax_section we are in the middle of section | |
3176 | sizing; some sections will already have os->size set, others | |
3177 | will have os->size zero and os->rawsize the previous size. */ | |
3178 | hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size); | |
3179 | if (hi < lo) | |
3180 | hi = (bfd_vma) -1; | |
3181 | ||
3182 | if (min_vma > lo) | |
3183 | min_vma = lo; | |
3184 | if (max_vma < hi) | |
3185 | max_vma = hi; | |
3186 | if (os->flags & SEC_SMALL_DATA) | |
3187 | { | |
3188 | if (min_short_vma > lo) | |
3189 | min_short_vma = lo; | |
3190 | if (max_short_vma < hi) | |
3191 | max_short_vma = hi; | |
3192 | } | |
3193 | } | |
3194 | ||
3195 | if (ia64_info->min_short_sec) | |
3196 | { | |
3197 | if (min_short_vma | |
3198 | > (ia64_info->min_short_sec->vma | |
3199 | + ia64_info->min_short_offset)) | |
3200 | min_short_vma = (ia64_info->min_short_sec->vma | |
3201 | + ia64_info->min_short_offset); | |
3202 | if (max_short_vma | |
3203 | < (ia64_info->max_short_sec->vma | |
3204 | + ia64_info->max_short_offset)) | |
3205 | max_short_vma = (ia64_info->max_short_sec->vma | |
3206 | + ia64_info->max_short_offset); | |
3207 | } | |
3208 | ||
3209 | /* See if the user wants to force a value. */ | |
3210 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
3211 | FALSE, FALSE); | |
3212 | ||
3213 | if (gp | |
3214 | && (gp->root.type == bfd_link_hash_defined | |
3215 | || gp->root.type == bfd_link_hash_defweak)) | |
3216 | { | |
3217 | asection *gp_sec = gp->root.u.def.section; | |
3218 | gp_val = (gp->root.u.def.value | |
3219 | + gp_sec->output_section->vma | |
3220 | + gp_sec->output_offset); | |
3221 | } | |
3222 | else | |
3223 | { | |
3224 | /* Pick a sensible value. */ | |
3225 | ||
3226 | if (ia64_info->min_short_sec) | |
3227 | { | |
3228 | bfd_vma short_range = max_short_vma - min_short_vma; | |
3229 | ||
3230 | /* If min_short_sec is set, pick one in the middle bewteen | |
3231 | min_short_vma and max_short_vma. */ | |
3232 | if (short_range >= 0x400000) | |
3233 | goto overflow; | |
3234 | gp_val = min_short_vma + short_range / 2; | |
3235 | } | |
3236 | else | |
3237 | { | |
3238 | asection *got_sec = ia64_info->root.sgot; | |
3239 | ||
3240 | /* Start with just the address of the .got. */ | |
3241 | if (got_sec) | |
3242 | gp_val = got_sec->output_section->vma; | |
3243 | else if (max_short_vma != 0) | |
3244 | gp_val = min_short_vma; | |
3245 | else if (max_vma - min_vma < 0x200000) | |
3246 | gp_val = min_vma; | |
3247 | else | |
3248 | gp_val = max_vma - 0x200000 + 8; | |
3249 | } | |
3250 | ||
3251 | /* If it is possible to address the entire image, but we | |
3252 | don't with the choice above, adjust. */ | |
3253 | if (max_vma - min_vma < 0x400000 | |
3254 | && (max_vma - gp_val >= 0x200000 | |
3255 | || gp_val - min_vma > 0x200000)) | |
3256 | gp_val = min_vma + 0x200000; | |
3257 | else if (max_short_vma != 0) | |
3258 | { | |
3259 | /* If we don't cover all the short data, adjust. */ | |
3260 | if (max_short_vma - gp_val >= 0x200000) | |
3261 | gp_val = min_short_vma + 0x200000; | |
3262 | ||
3263 | /* If we're addressing stuff past the end, adjust back. */ | |
3264 | if (gp_val > max_vma) | |
3265 | gp_val = max_vma - 0x200000 + 8; | |
3266 | } | |
3267 | } | |
3268 | ||
3269 | /* Validate whether all SHF_IA_64_SHORT sections are within | |
3270 | range of the chosen GP. */ | |
3271 | ||
3272 | if (max_short_vma != 0) | |
3273 | { | |
3274 | if (max_short_vma - min_short_vma >= 0x400000) | |
3275 | { | |
3276 | overflow: | |
3277 | (*_bfd_error_handler) | |
3278 | (_("%s: short data segment overflowed (0x%lx >= 0x400000)"), | |
3279 | bfd_get_filename (abfd), | |
3280 | (unsigned long) (max_short_vma - min_short_vma)); | |
3281 | return FALSE; | |
3282 | } | |
3283 | else if ((gp_val > min_short_vma | |
3284 | && gp_val - min_short_vma > 0x200000) | |
3285 | || (gp_val < max_short_vma | |
3286 | && max_short_vma - gp_val >= 0x200000)) | |
3287 | { | |
3288 | (*_bfd_error_handler) | |
3289 | (_("%s: __gp does not cover short data segment"), | |
3290 | bfd_get_filename (abfd)); | |
3291 | return FALSE; | |
3292 | } | |
3293 | } | |
3294 | ||
3295 | _bfd_set_gp_value (abfd, gp_val); | |
3296 | ||
3297 | return TRUE; | |
3298 | } | |
3299 | ||
3300 | static bfd_boolean | |
3301 | elf64_ia64_final_link (bfd *abfd, struct bfd_link_info *info) | |
3302 | { | |
3303 | struct elf64_ia64_link_hash_table *ia64_info; | |
3304 | asection *unwind_output_sec; | |
3305 | ||
3306 | ia64_info = elf64_ia64_hash_table (info); | |
3307 | if (ia64_info == NULL) | |
3308 | return FALSE; | |
3309 | ||
3310 | /* Make sure we've got ourselves a nice fat __gp value. */ | |
3311 | if (!info->relocatable) | |
3312 | { | |
3313 | bfd_vma gp_val; | |
3314 | struct elf_link_hash_entry *gp; | |
3315 | ||
3316 | /* We assume after gp is set, section size will only decrease. We | |
3317 | need to adjust gp for it. */ | |
3318 | _bfd_set_gp_value (abfd, 0); | |
3319 | if (! elf64_ia64_choose_gp (abfd, info, TRUE)) | |
3320 | return FALSE; | |
3321 | gp_val = _bfd_get_gp_value (abfd); | |
3322 | ||
3323 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
3324 | FALSE, FALSE); | |
3325 | if (gp) | |
3326 | { | |
3327 | gp->root.type = bfd_link_hash_defined; | |
3328 | gp->root.u.def.value = gp_val; | |
3329 | gp->root.u.def.section = bfd_abs_section_ptr; | |
3330 | } | |
3331 | } | |
3332 | ||
3333 | /* If we're producing a final executable, we need to sort the contents | |
3334 | of the .IA_64.unwind section. Force this section to be relocated | |
3335 | into memory rather than written immediately to the output file. */ | |
3336 | unwind_output_sec = NULL; | |
3337 | if (!info->relocatable) | |
3338 | { | |
3339 | asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); | |
3340 | if (s) | |
3341 | { | |
3342 | unwind_output_sec = s->output_section; | |
3343 | unwind_output_sec->contents | |
3344 | = bfd_malloc (unwind_output_sec->size); | |
3345 | if (unwind_output_sec->contents == NULL) | |
3346 | return FALSE; | |
3347 | } | |
3348 | } | |
3349 | ||
3350 | /* Invoke the regular ELF backend linker to do all the work. */ | |
3351 | if (!bfd_elf_final_link (abfd, info)) | |
3352 | return FALSE; | |
3353 | ||
3354 | if (unwind_output_sec) | |
3355 | { | |
3356 | elf64_ia64_unwind_entry_compare_bfd = abfd; | |
3357 | qsort (unwind_output_sec->contents, | |
3358 | (size_t) (unwind_output_sec->size / 24), | |
3359 | 24, | |
3360 | elf64_ia64_unwind_entry_compare); | |
3361 | ||
3362 | if (! bfd_set_section_contents (abfd, unwind_output_sec, | |
3363 | unwind_output_sec->contents, (bfd_vma) 0, | |
3364 | unwind_output_sec->size)) | |
3365 | return FALSE; | |
3366 | } | |
3367 | ||
3368 | return TRUE; | |
3369 | } | |
3370 | ||
3371 | static bfd_boolean | |
3372 | elf64_ia64_relocate_section (bfd *output_bfd, | |
3373 | struct bfd_link_info *info, | |
3374 | bfd *input_bfd, | |
3375 | asection *input_section, | |
3376 | bfd_byte *contents, | |
3377 | Elf_Internal_Rela *relocs, | |
3378 | Elf_Internal_Sym *local_syms, | |
3379 | asection **local_sections) | |
3380 | { | |
3381 | struct elf64_ia64_link_hash_table *ia64_info; | |
3382 | Elf_Internal_Shdr *symtab_hdr; | |
3383 | Elf_Internal_Rela *rel; | |
3384 | Elf_Internal_Rela *relend; | |
3385 | bfd_boolean ret_val = TRUE; /* for non-fatal errors */ | |
3386 | bfd_vma gp_val; | |
3387 | ||
3388 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3389 | ia64_info = elf64_ia64_hash_table (info); | |
3390 | if (ia64_info == NULL) | |
3391 | return FALSE; | |
3392 | ||
3393 | /* Infect various flags from the input section to the output section. */ | |
3394 | if (info->relocatable) | |
3395 | { | |
3396 | bfd_vma flags; | |
3397 | ||
3398 | flags = elf_section_data(input_section)->this_hdr.sh_flags; | |
3399 | flags &= SHF_IA_64_NORECOV; | |
3400 | ||
3401 | elf_section_data(input_section->output_section) | |
3402 | ->this_hdr.sh_flags |= flags; | |
3403 | } | |
3404 | ||
3405 | gp_val = _bfd_get_gp_value (output_bfd); | |
3406 | ||
3407 | rel = relocs; | |
3408 | relend = relocs + input_section->reloc_count; | |
3409 | for (; rel < relend; ++rel) | |
3410 | { | |
3411 | struct elf_link_hash_entry *h; | |
3412 | struct elf64_ia64_dyn_sym_info *dyn_i; | |
3413 | bfd_reloc_status_type r; | |
3414 | reloc_howto_type *howto; | |
3415 | unsigned long r_symndx; | |
3416 | Elf_Internal_Sym *sym; | |
3417 | unsigned int r_type; | |
3418 | bfd_vma value; | |
3419 | asection *sym_sec; | |
3420 | bfd_byte *hit_addr; | |
3421 | bfd_boolean dynamic_symbol_p; | |
3422 | bfd_boolean undef_weak_ref; | |
3423 | ||
3424 | r_type = ELF64_R_TYPE (rel->r_info); | |
3425 | if (r_type > R_IA64_MAX_RELOC_CODE) | |
3426 | { | |
3427 | (*_bfd_error_handler) | |
3428 | (_("%B: unknown relocation type %d"), | |
3429 | input_bfd, (int) r_type); | |
3430 | bfd_set_error (bfd_error_bad_value); | |
3431 | ret_val = FALSE; | |
3432 | continue; | |
3433 | } | |
3434 | ||
3435 | howto = ia64_elf_lookup_howto (r_type); | |
3436 | r_symndx = ELF64_R_SYM (rel->r_info); | |
3437 | h = NULL; | |
3438 | sym = NULL; | |
3439 | sym_sec = NULL; | |
3440 | undef_weak_ref = FALSE; | |
3441 | ||
3442 | if (r_symndx < symtab_hdr->sh_info) | |
3443 | { | |
3444 | /* Reloc against local symbol. */ | |
3445 | asection *msec; | |
3446 | sym = local_syms + r_symndx; | |
3447 | sym_sec = local_sections[r_symndx]; | |
3448 | msec = sym_sec; | |
3449 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3450 | if (!info->relocatable | |
3451 | && (sym_sec->flags & SEC_MERGE) != 0 | |
3452 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
dbaa2011 | 3453 | && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE) |
202e2356 NC |
3454 | { |
3455 | struct elf64_ia64_local_hash_entry *loc_h; | |
3456 | ||
3457 | loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE); | |
3458 | if (loc_h && ! loc_h->sec_merge_done) | |
3459 | { | |
3460 | struct elf64_ia64_dyn_sym_info *dynent; | |
3461 | unsigned int count; | |
3462 | ||
3463 | for (count = loc_h->count, dynent = loc_h->info; | |
3464 | count != 0; | |
3465 | count--, dynent++) | |
3466 | { | |
3467 | msec = sym_sec; | |
3468 | dynent->addend = | |
3469 | _bfd_merged_section_offset (output_bfd, &msec, | |
3470 | elf_section_data (msec)-> | |
3471 | sec_info, | |
3472 | sym->st_value | |
3473 | + dynent->addend); | |
3474 | dynent->addend -= sym->st_value; | |
3475 | dynent->addend += msec->output_section->vma | |
3476 | + msec->output_offset | |
3477 | - sym_sec->output_section->vma | |
3478 | - sym_sec->output_offset; | |
3479 | } | |
3480 | ||
3481 | /* We may have introduced duplicated entries. We need | |
3482 | to remove them properly. */ | |
3483 | count = sort_dyn_sym_info (loc_h->info, loc_h->count); | |
3484 | if (count != loc_h->count) | |
3485 | { | |
3486 | loc_h->count = count; | |
3487 | loc_h->sorted_count = count; | |
3488 | } | |
3489 | ||
3490 | loc_h->sec_merge_done = 1; | |
3491 | } | |
3492 | } | |
3493 | } | |
3494 | else | |
3495 | { | |
3496 | bfd_boolean unresolved_reloc; | |
62d887d4 | 3497 | bfd_boolean warned, ignored; |
202e2356 NC |
3498 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
3499 | ||
3500 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
3501 | r_symndx, symtab_hdr, sym_hashes, | |
3502 | h, sym_sec, value, | |
62d887d4 | 3503 | unresolved_reloc, warned, ignored); |
202e2356 NC |
3504 | |
3505 | if (h->root.type == bfd_link_hash_undefweak) | |
3506 | undef_weak_ref = TRUE; | |
3507 | else if (warned) | |
3508 | continue; | |
3509 | } | |
3510 | ||
3511 | /* For relocs against symbols from removed linkonce sections, | |
3512 | or sections discarded by a linker script, we just want the | |
3513 | section contents zeroed. Avoid any special processing. */ | |
dbaa2011 | 3514 | if (sym_sec != NULL && discarded_section (sym_sec)) |
202e2356 | 3515 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
2de5d135 | 3516 | rel, 1, relend, howto, 0, contents); |
202e2356 NC |
3517 | |
3518 | if (info->relocatable) | |
3519 | continue; | |
3520 | ||
3521 | hit_addr = contents + rel->r_offset; | |
3522 | value += rel->r_addend; | |
3523 | dynamic_symbol_p = elf64_ia64_dynamic_symbol_p (h); | |
3524 | ||
3525 | switch (r_type) | |
3526 | { | |
3527 | case R_IA64_NONE: | |
3528 | case R_IA64_LDXMOV: | |
3529 | continue; | |
3530 | ||
3531 | case R_IA64_IMM14: | |
3532 | case R_IA64_IMM22: | |
3533 | case R_IA64_IMM64: | |
3534 | case R_IA64_DIR32MSB: | |
3535 | case R_IA64_DIR32LSB: | |
3536 | case R_IA64_DIR64MSB: | |
3537 | case R_IA64_DIR64LSB: | |
3538 | /* Install a dynamic relocation for this reloc. */ | |
3539 | if ((dynamic_symbol_p || info->shared) | |
3540 | && r_symndx != 0 | |
3541 | && (input_section->flags & SEC_ALLOC) != 0) | |
3542 | { | |
3543 | unsigned int dyn_r_type; | |
3544 | bfd_vma addend; | |
3545 | ||
3546 | switch (r_type) | |
3547 | { | |
3548 | case R_IA64_IMM14: | |
3549 | case R_IA64_IMM22: | |
3550 | case R_IA64_IMM64: | |
3551 | /* ??? People shouldn't be doing non-pic code in | |
3552 | shared libraries nor dynamic executables. */ | |
3553 | (*_bfd_error_handler) | |
3554 | (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"), | |
3555 | input_bfd, | |
3556 | h ? h->root.root.string | |
3557 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3558 | sym_sec)); | |
3559 | ret_val = FALSE; | |
3560 | continue; | |
3561 | ||
3562 | default: | |
3563 | break; | |
3564 | } | |
3565 | ||
3566 | /* If we don't need dynamic symbol lookup, find a | |
3567 | matching RELATIVE relocation. */ | |
3568 | dyn_r_type = r_type; | |
3569 | if (dynamic_symbol_p) | |
3570 | { | |
3571 | addend = rel->r_addend; | |
3572 | value = 0; | |
3573 | } | |
3574 | else | |
3575 | { | |
3576 | addend = value; | |
3577 | } | |
3578 | ||
3579 | /* VMS: install a FIX64. */ | |
3580 | switch (dyn_r_type) | |
3581 | { | |
3582 | case R_IA64_DIR32LSB: | |
3583 | dyn_r_type = R_IA64_VMS_FIX32; | |
3584 | break; | |
3585 | case R_IA64_DIR64LSB: | |
3586 | dyn_r_type = R_IA64_VMS_FIX64; | |
3587 | break; | |
3588 | default: | |
3589 | BFD_ASSERT (FALSE); | |
3590 | break; | |
3591 | } | |
3592 | elf64_ia64_install_fixup | |
3593 | (output_bfd, ia64_info, h, | |
3594 | dyn_r_type, input_section, rel->r_offset, addend); | |
3595 | r = bfd_reloc_ok; | |
3596 | break; | |
3597 | } | |
3598 | /* Fall through. */ | |
3599 | ||
3600 | case R_IA64_LTV32MSB: | |
3601 | case R_IA64_LTV32LSB: | |
3602 | case R_IA64_LTV64MSB: | |
3603 | case R_IA64_LTV64LSB: | |
3604 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
3605 | break; | |
3606 | ||
3607 | case R_IA64_GPREL22: | |
3608 | case R_IA64_GPREL64I: | |
3609 | case R_IA64_GPREL32MSB: | |
3610 | case R_IA64_GPREL32LSB: | |
3611 | case R_IA64_GPREL64MSB: | |
3612 | case R_IA64_GPREL64LSB: | |
3613 | if (dynamic_symbol_p) | |
3614 | { | |
3615 | (*_bfd_error_handler) | |
3616 | (_("%B: @gprel relocation against dynamic symbol %s"), | |
3617 | input_bfd, | |
3618 | h ? h->root.root.string | |
3619 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3620 | sym_sec)); | |
3621 | ret_val = FALSE; | |
3622 | continue; | |
3623 | } | |
3624 | value -= gp_val; | |
3625 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
3626 | break; | |
3627 | ||
3628 | case R_IA64_LTOFF22: | |
3629 | case R_IA64_LTOFF22X: | |
3630 | case R_IA64_LTOFF64I: | |
3631 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
3632 | value = set_got_entry (input_bfd, info, dyn_i, | |
3633 | rel->r_addend, value, R_IA64_DIR64LSB); | |
3634 | value -= gp_val; | |
3635 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
3636 | break; | |
3637 | ||
3638 | case R_IA64_PLTOFF22: | |
3639 | case R_IA64_PLTOFF64I: | |
3640 | case R_IA64_PLTOFF64MSB: | |
3641 | case R_IA64_PLTOFF64LSB: | |
3642 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
3643 | value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE); | |
3644 | value -= gp_val; | |
3645 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
3646 | break; | |
3647 | ||
3648 | case R_IA64_FPTR64I: | |
3649 | case R_IA64_FPTR32MSB: | |
3650 | case R_IA64_FPTR32LSB: | |
3651 | case R_IA64_FPTR64MSB: | |
3652 | case R_IA64_FPTR64LSB: | |
3653 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
3654 | if (dyn_i->want_fptr) | |
3655 | { | |
3656 | if (!undef_weak_ref) | |
3657 | value = set_fptr_entry (output_bfd, info, dyn_i, value); | |
3658 | } | |
3659 | if (!dyn_i->want_fptr || info->pie) | |
3660 | { | |
3661 | /* Otherwise, we expect the dynamic linker to create | |
3662 | the entry. */ | |
3663 | ||
3664 | if (dyn_i->want_fptr) | |
3665 | { | |
3666 | if (r_type == R_IA64_FPTR64I) | |
3667 | { | |
3668 | /* We can't represent this without a dynamic symbol. | |
3669 | Adjust the relocation to be against an output | |
3670 | section symbol, which are always present in the | |
3671 | dynamic symbol table. */ | |
3672 | /* ??? People shouldn't be doing non-pic code in | |
3673 | shared libraries. Hork. */ | |
3674 | (*_bfd_error_handler) | |
3675 | (_("%B: linking non-pic code in a position independent executable"), | |
3676 | input_bfd); | |
3677 | ret_val = FALSE; | |
3678 | continue; | |
3679 | } | |
3680 | } | |
3681 | else | |
3682 | { | |
3683 | value = 0; | |
3684 | } | |
3685 | ||
3686 | /* VMS: FIXFD. */ | |
3687 | elf64_ia64_install_fixup | |
3688 | (output_bfd, ia64_info, h, R_IA64_VMS_FIXFD, | |
3689 | input_section, rel->r_offset, 0); | |
3690 | r = bfd_reloc_ok; | |
3691 | break; | |
3692 | } | |
3693 | ||
3694 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
3695 | break; | |
3696 | ||
3697 | case R_IA64_LTOFF_FPTR22: | |
3698 | case R_IA64_LTOFF_FPTR64I: | |
3699 | case R_IA64_LTOFF_FPTR32MSB: | |
3700 | case R_IA64_LTOFF_FPTR32LSB: | |
3701 | case R_IA64_LTOFF_FPTR64MSB: | |
3702 | case R_IA64_LTOFF_FPTR64LSB: | |
3703 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
3704 | if (dyn_i->want_fptr) | |
3705 | { | |
3706 | BFD_ASSERT (h == NULL || !h->def_dynamic); | |
3707 | if (!undef_weak_ref) | |
3708 | value = set_fptr_entry (output_bfd, info, dyn_i, value); | |
3709 | } | |
3710 | else | |
3711 | value = 0; | |
3712 | ||
3713 | value = set_got_entry (output_bfd, info, dyn_i, | |
3714 | rel->r_addend, value, R_IA64_FPTR64LSB); | |
3715 | value -= gp_val; | |
3716 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
3717 | break; | |
3718 | ||
3719 | case R_IA64_PCREL32MSB: | |
3720 | case R_IA64_PCREL32LSB: | |
3721 | case R_IA64_PCREL64MSB: | |
3722 | case R_IA64_PCREL64LSB: | |
3723 | /* Install a dynamic relocation for this reloc. */ | |
3724 | if (dynamic_symbol_p && r_symndx != 0) | |
3725 | { | |
3726 | /* VMS: doesn't exist ??? */ | |
3727 | abort (); | |
3728 | } | |
3729 | goto finish_pcrel; | |
3730 | ||
3731 | case R_IA64_PCREL21B: | |
3732 | case R_IA64_PCREL60B: | |
3733 | /* We should have created a PLT entry for any dynamic symbol. */ | |
3734 | dyn_i = NULL; | |
3735 | if (h) | |
3736 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); | |
3737 | ||
3738 | if (dyn_i && dyn_i->want_plt2) | |
3739 | { | |
3740 | /* Should have caught this earlier. */ | |
3741 | BFD_ASSERT (rel->r_addend == 0); | |
3742 | ||
3743 | value = (ia64_info->root.splt->output_section->vma | |
3744 | + ia64_info->root.splt->output_offset | |
3745 | + dyn_i->plt2_offset); | |
3746 | } | |
3747 | else | |
3748 | { | |
3749 | /* Since there's no PLT entry, Validate that this is | |
3750 | locally defined. */ | |
3751 | BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL); | |
3752 | ||
3753 | /* If the symbol is undef_weak, we shouldn't be trying | |
3754 | to call it. There's every chance that we'd wind up | |
3755 | with an out-of-range fixup here. Don't bother setting | |
3756 | any value at all. */ | |
3757 | if (undef_weak_ref) | |
3758 | continue; | |
3759 | } | |
3760 | goto finish_pcrel; | |
3761 | ||
3762 | case R_IA64_PCREL21BI: | |
3763 | case R_IA64_PCREL21F: | |
3764 | case R_IA64_PCREL21M: | |
3765 | case R_IA64_PCREL22: | |
3766 | case R_IA64_PCREL64I: | |
3767 | /* The PCREL21BI reloc is specifically not intended for use with | |
3768 | dynamic relocs. PCREL21F and PCREL21M are used for speculation | |
3769 | fixup code, and thus probably ought not be dynamic. The | |
3770 | PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */ | |
3771 | if (dynamic_symbol_p) | |
3772 | { | |
3773 | const char *msg; | |
3774 | ||
3775 | if (r_type == R_IA64_PCREL21BI) | |
3776 | msg = _("%B: @internal branch to dynamic symbol %s"); | |
3777 | else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M) | |
3778 | msg = _("%B: speculation fixup to dynamic symbol %s"); | |
3779 | else | |
3780 | msg = _("%B: @pcrel relocation against dynamic symbol %s"); | |
3781 | (*_bfd_error_handler) (msg, input_bfd, | |
3782 | h ? h->root.root.string | |
3783 | : bfd_elf_sym_name (input_bfd, | |
3784 | symtab_hdr, | |
3785 | sym, | |
3786 | sym_sec)); | |
3787 | ret_val = FALSE; | |
3788 | continue; | |
3789 | } | |
3790 | goto finish_pcrel; | |
3791 | ||
3792 | finish_pcrel: | |
3793 | /* Make pc-relative. */ | |
3794 | value -= (input_section->output_section->vma | |
3795 | + input_section->output_offset | |
3796 | + rel->r_offset) & ~ (bfd_vma) 0x3; | |
3797 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
3798 | break; | |
3799 | ||
3800 | case R_IA64_SEGREL32MSB: | |
3801 | case R_IA64_SEGREL32LSB: | |
3802 | case R_IA64_SEGREL64MSB: | |
3803 | case R_IA64_SEGREL64LSB: | |
3804 | { | |
3805 | /* Find the segment that contains the output_section. */ | |
3806 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section | |
3807 | (output_bfd, sym_sec->output_section); | |
3808 | ||
3809 | if (p == NULL) | |
3810 | { | |
3811 | r = bfd_reloc_notsupported; | |
3812 | } | |
3813 | else | |
3814 | { | |
3815 | /* The VMA of the segment is the vaddr of the associated | |
3816 | program header. */ | |
3817 | if (value > p->p_vaddr) | |
3818 | value -= p->p_vaddr; | |
3819 | else | |
3820 | value = 0; | |
3821 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
3822 | } | |
3823 | break; | |
3824 | } | |
3825 | ||
3826 | case R_IA64_SECREL32MSB: | |
3827 | case R_IA64_SECREL32LSB: | |
3828 | case R_IA64_SECREL64MSB: | |
3829 | case R_IA64_SECREL64LSB: | |
3830 | /* Make output-section relative to section where the symbol | |
3831 | is defined. PR 475 */ | |
3832 | if (sym_sec) | |
3833 | value -= sym_sec->output_section->vma; | |
3834 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
3835 | break; | |
3836 | ||
3837 | case R_IA64_IPLTMSB: | |
3838 | case R_IA64_IPLTLSB: | |
3839 | /* Install a dynamic relocation for this reloc. */ | |
3840 | if ((dynamic_symbol_p || info->shared) | |
3841 | && (input_section->flags & SEC_ALLOC) != 0) | |
3842 | { | |
3843 | /* VMS: FIXFD ?? */ | |
3844 | abort (); | |
3845 | } | |
3846 | ||
3847 | if (r_type == R_IA64_IPLTMSB) | |
3848 | r_type = R_IA64_DIR64MSB; | |
3849 | else | |
3850 | r_type = R_IA64_DIR64LSB; | |
3851 | ia64_elf_install_value (hit_addr, value, r_type); | |
3852 | r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type); | |
3853 | break; | |
3854 | ||
3855 | case R_IA64_TPREL14: | |
3856 | case R_IA64_TPREL22: | |
3857 | case R_IA64_TPREL64I: | |
3858 | r = bfd_reloc_notsupported; | |
3859 | break; | |
3860 | ||
3861 | case R_IA64_DTPREL14: | |
3862 | case R_IA64_DTPREL22: | |
3863 | case R_IA64_DTPREL64I: | |
3864 | case R_IA64_DTPREL32LSB: | |
3865 | case R_IA64_DTPREL32MSB: | |
3866 | case R_IA64_DTPREL64LSB: | |
3867 | case R_IA64_DTPREL64MSB: | |
3868 | r = bfd_reloc_notsupported; | |
3869 | break; | |
3870 | ||
3871 | case R_IA64_LTOFF_TPREL22: | |
3872 | case R_IA64_LTOFF_DTPMOD22: | |
3873 | case R_IA64_LTOFF_DTPREL22: | |
3874 | r = bfd_reloc_notsupported; | |
3875 | break; | |
3876 | ||
3877 | default: | |
3878 | r = bfd_reloc_notsupported; | |
3879 | break; | |
3880 | } | |
3881 | ||
3882 | switch (r) | |
3883 | { | |
3884 | case bfd_reloc_ok: | |
3885 | break; | |
3886 | ||
3887 | case bfd_reloc_undefined: | |
3888 | /* This can happen for global table relative relocs if | |
3889 | __gp is undefined. This is a panic situation so we | |
3890 | don't try to continue. */ | |
3891 | (*info->callbacks->undefined_symbol) | |
3892 | (info, "__gp", input_bfd, input_section, rel->r_offset, 1); | |
3893 | return FALSE; | |
3894 | ||
3895 | case bfd_reloc_notsupported: | |
3896 | { | |
3897 | const char *name; | |
3898 | ||
3899 | if (h) | |
3900 | name = h->root.root.string; | |
3901 | else | |
3902 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3903 | sym_sec); | |
3904 | if (!(*info->callbacks->warning) (info, _("unsupported reloc"), | |
3905 | name, input_bfd, | |
3906 | input_section, rel->r_offset)) | |
3907 | return FALSE; | |
3908 | ret_val = FALSE; | |
3909 | } | |
3910 | break; | |
3911 | ||
3912 | case bfd_reloc_dangerous: | |
3913 | case bfd_reloc_outofrange: | |
3914 | case bfd_reloc_overflow: | |
3915 | default: | |
3916 | { | |
3917 | const char *name; | |
3918 | ||
3919 | if (h) | |
3920 | name = h->root.root.string; | |
3921 | else | |
3922 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3923 | sym_sec); | |
3924 | ||
3925 | switch (r_type) | |
3926 | { | |
3927 | case R_IA64_TPREL14: | |
3928 | case R_IA64_TPREL22: | |
3929 | case R_IA64_TPREL64I: | |
3930 | case R_IA64_DTPREL14: | |
3931 | case R_IA64_DTPREL22: | |
3932 | case R_IA64_DTPREL64I: | |
3933 | case R_IA64_DTPREL32LSB: | |
3934 | case R_IA64_DTPREL32MSB: | |
3935 | case R_IA64_DTPREL64LSB: | |
3936 | case R_IA64_DTPREL64MSB: | |
3937 | case R_IA64_LTOFF_TPREL22: | |
3938 | case R_IA64_LTOFF_DTPMOD22: | |
3939 | case R_IA64_LTOFF_DTPREL22: | |
3940 | (*_bfd_error_handler) | |
3941 | (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."), | |
3942 | input_bfd, input_section, howto->name, name, | |
3943 | rel->r_offset); | |
3944 | break; | |
3945 | ||
3946 | case R_IA64_PCREL21B: | |
3947 | case R_IA64_PCREL21BI: | |
3948 | case R_IA64_PCREL21M: | |
3949 | case R_IA64_PCREL21F: | |
3950 | if (is_elf_hash_table (info->hash)) | |
3951 | { | |
3952 | /* Relaxtion is always performed for ELF output. | |
3953 | Overflow failures for those relocations mean | |
3954 | that the section is too big to relax. */ | |
3955 | (*_bfd_error_handler) | |
3956 | (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."), | |
3957 | input_bfd, input_section, howto->name, name, | |
3958 | rel->r_offset, input_section->size); | |
3959 | break; | |
3960 | } | |
3961 | default: | |
3962 | if (!(*info->callbacks->reloc_overflow) (info, | |
3963 | &h->root, | |
3964 | name, | |
3965 | howto->name, | |
3966 | (bfd_vma) 0, | |
3967 | input_bfd, | |
3968 | input_section, | |
3969 | rel->r_offset)) | |
3970 | return FALSE; | |
3971 | break; | |
3972 | } | |
3973 | ||
3974 | ret_val = FALSE; | |
3975 | } | |
3976 | break; | |
3977 | } | |
3978 | } | |
3979 | ||
3980 | return ret_val; | |
3981 | } | |
3982 | ||
3983 | static bfd_boolean | |
3984 | elf64_ia64_finish_dynamic_symbol (bfd *output_bfd, | |
3985 | struct bfd_link_info *info, | |
3986 | struct elf_link_hash_entry *h, | |
3987 | Elf_Internal_Sym *sym) | |
3988 | { | |
3989 | struct elf64_ia64_link_hash_table *ia64_info; | |
3990 | struct elf64_ia64_dyn_sym_info *dyn_i; | |
3991 | ||
3992 | ia64_info = elf64_ia64_hash_table (info); | |
3993 | if (ia64_info == NULL) | |
3994 | return FALSE; | |
3995 | ||
3996 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); | |
3997 | ||
3998 | /* Fill in the PLT data, if required. */ | |
3999 | if (dyn_i && dyn_i->want_plt) | |
4000 | { | |
4001 | bfd_byte *loc; | |
4002 | asection *plt_sec; | |
4003 | bfd_vma plt_addr, pltoff_addr, gp_val; | |
4004 | ||
4005 | gp_val = _bfd_get_gp_value (output_bfd); | |
4006 | ||
4007 | plt_sec = ia64_info->root.splt; | |
4008 | plt_addr = 0; /* Not used as overriden by FIXUPs. */ | |
4009 | pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE); | |
4010 | ||
4011 | /* Initialize the FULL PLT entry, if needed. */ | |
4012 | if (dyn_i->want_plt2) | |
4013 | { | |
4014 | loc = plt_sec->contents + dyn_i->plt2_offset; | |
4015 | ||
4016 | memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); | |
4017 | ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22); | |
4018 | ||
4019 | /* Mark the symbol as undefined, rather than as defined in the | |
4020 | plt section. Leave the value alone. */ | |
4021 | /* ??? We didn't redefine it in adjust_dynamic_symbol in the | |
4022 | first place. But perhaps elflink.c did some for us. */ | |
4023 | if (!h->def_regular) | |
4024 | sym->st_shndx = SHN_UNDEF; | |
4025 | } | |
4026 | ||
4027 | /* VMS: FIXFD. */ | |
4028 | elf64_ia64_install_fixup | |
4029 | (output_bfd, ia64_info, h, R_IA64_VMS_FIXFD, ia64_info->pltoff_sec, | |
4030 | pltoff_addr - (ia64_info->pltoff_sec->output_section->vma | |
4031 | + ia64_info->pltoff_sec->output_offset), 0); | |
4032 | } | |
4033 | ||
4034 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 4035 | if (h == ia64_info->root.hdynamic |
202e2356 NC |
4036 | || h == ia64_info->root.hgot |
4037 | || h == ia64_info->root.hplt) | |
4038 | sym->st_shndx = SHN_ABS; | |
4039 | ||
4040 | return TRUE; | |
4041 | } | |
4042 | ||
4043 | static bfd_boolean | |
4044 | elf64_ia64_finish_dynamic_sections (bfd *abfd, | |
4045 | struct bfd_link_info *info) | |
4046 | { | |
4047 | struct elf64_ia64_link_hash_table *ia64_info; | |
4048 | bfd *dynobj; | |
4049 | ||
4050 | ia64_info = elf64_ia64_hash_table (info); | |
4051 | if (ia64_info == NULL) | |
4052 | return FALSE; | |
4053 | ||
4054 | dynobj = ia64_info->root.dynobj; | |
4055 | ||
4056 | if (elf_hash_table (info)->dynamic_sections_created) | |
4057 | { | |
4058 | Elf64_External_Dyn *dyncon, *dynconend; | |
4059 | asection *sdyn; | |
4060 | asection *unwind_sec; | |
4061 | bfd_vma gp_val; | |
4062 | unsigned int gp_seg; | |
4063 | bfd_vma gp_off; | |
4064 | Elf_Internal_Phdr *phdr; | |
4065 | Elf_Internal_Phdr *base_phdr; | |
4066 | unsigned int unwind_seg = 0; | |
4067 | unsigned int code_seg = 0; | |
4068 | ||
3d4d4302 | 4069 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
202e2356 NC |
4070 | BFD_ASSERT (sdyn != NULL); |
4071 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
4072 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); | |
4073 | ||
4074 | gp_val = _bfd_get_gp_value (abfd); | |
4075 | phdr = _bfd_elf_find_segment_containing_section | |
4076 | (info->output_bfd, ia64_info->pltoff_sec->output_section); | |
4077 | BFD_ASSERT (phdr != NULL); | |
4078 | base_phdr = elf_tdata (info->output_bfd)->phdr; | |
4079 | gp_seg = phdr - base_phdr; | |
4080 | gp_off = gp_val - phdr->p_vaddr; | |
4081 | ||
4082 | unwind_sec = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); | |
4083 | if (unwind_sec != NULL) | |
4084 | { | |
4085 | asection *code_sec; | |
4086 | ||
4087 | phdr = _bfd_elf_find_segment_containing_section (abfd, unwind_sec); | |
4088 | BFD_ASSERT (phdr != NULL); | |
4089 | unwind_seg = phdr - base_phdr; | |
4090 | ||
4091 | code_sec = bfd_get_section_by_name (abfd, "$CODE$"); | |
4092 | phdr = _bfd_elf_find_segment_containing_section (abfd, code_sec); | |
4093 | BFD_ASSERT (phdr != NULL); | |
4094 | code_seg = phdr - base_phdr; | |
4095 | } | |
4096 | ||
4097 | for (; dyncon < dynconend; dyncon++) | |
4098 | { | |
4099 | Elf_Internal_Dyn dyn; | |
4100 | ||
4101 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
4102 | ||
4103 | switch (dyn.d_tag) | |
4104 | { | |
4105 | case DT_IA_64_VMS_FIXUP_RELA_OFF: | |
4106 | dyn.d_un.d_val += | |
4107 | (ia64_info->fixups_sec->output_section->vma | |
4108 | + ia64_info->fixups_sec->output_offset) | |
4109 | - (sdyn->output_section->vma + sdyn->output_offset); | |
4110 | break; | |
4111 | ||
4112 | case DT_IA_64_VMS_PLTGOT_OFFSET: | |
4113 | dyn.d_un.d_val = gp_off; | |
4114 | break; | |
4115 | ||
4116 | case DT_IA_64_VMS_PLTGOT_SEG: | |
4117 | dyn.d_un.d_val = gp_seg; | |
4118 | break; | |
4119 | ||
4120 | case DT_IA_64_VMS_UNWINDSZ: | |
4121 | if (unwind_sec == NULL) | |
4122 | { | |
4123 | dyn.d_tag = DT_NULL; | |
4124 | dyn.d_un.d_val = 0xdead; | |
4125 | } | |
4126 | else | |
4127 | dyn.d_un.d_val = unwind_sec->size; | |
4128 | break; | |
4129 | ||
4130 | case DT_IA_64_VMS_UNWIND_CODSEG: | |
4131 | dyn.d_un.d_val = code_seg; | |
4132 | break; | |
4133 | ||
4134 | case DT_IA_64_VMS_UNWIND_INFOSEG: | |
4135 | case DT_IA_64_VMS_UNWIND_SEG: | |
4136 | dyn.d_un.d_val = unwind_seg; | |
4137 | break; | |
4138 | ||
4139 | case DT_IA_64_VMS_UNWIND_OFFSET: | |
4140 | break; | |
4141 | ||
4142 | default: | |
4143 | /* No need to rewrite the entry. */ | |
4144 | continue; | |
4145 | } | |
4146 | ||
4147 | bfd_elf64_swap_dyn_out (abfd, &dyn, dyncon); | |
4148 | } | |
4149 | } | |
4150 | ||
4151 | /* Handle transfer addresses. */ | |
4152 | { | |
4153 | asection *tfr_sec = ia64_info->transfer_sec; | |
4154 | struct elf64_vms_transfer *tfr; | |
4155 | struct elf_link_hash_entry *tfr3; | |
4156 | ||
4157 | tfr = (struct elf64_vms_transfer *)tfr_sec->contents; | |
4158 | bfd_putl32 (6 * 8, tfr->size); | |
4159 | bfd_putl64 (tfr_sec->output_section->vma | |
4160 | + tfr_sec->output_offset | |
4161 | + 6 * 8, tfr->tfradr3); | |
4162 | ||
4163 | tfr3 = elf_link_hash_lookup (elf_hash_table (info), "ELF$TFRADR", FALSE, | |
4164 | FALSE, FALSE); | |
4165 | ||
4166 | if (tfr3 | |
4167 | && (tfr3->root.type == bfd_link_hash_defined | |
4168 | || tfr3->root.type == bfd_link_hash_defweak)) | |
4169 | { | |
4170 | asection *tfr3_sec = tfr3->root.u.def.section; | |
4171 | bfd_vma tfr3_val; | |
4172 | ||
4173 | tfr3_val = (tfr3->root.u.def.value | |
4174 | + tfr3_sec->output_section->vma | |
4175 | + tfr3_sec->output_offset); | |
4176 | ||
4177 | bfd_putl64 (tfr3_val, tfr->tfr3_func); | |
4178 | bfd_putl64 (_bfd_get_gp_value (info->output_bfd), tfr->tfr3_gp); | |
4179 | } | |
4180 | ||
4181 | /* FIXME: set linker flags, | |
4182 | handle lib$initialize. */ | |
4183 | } | |
4184 | ||
4185 | return TRUE; | |
4186 | } | |
4187 | ||
4188 | /* ELF file flag handling: */ | |
4189 | ||
4190 | /* Function to keep IA-64 specific file flags. */ | |
4191 | static bfd_boolean | |
4192 | elf64_ia64_set_private_flags (bfd *abfd, flagword flags) | |
4193 | { | |
4194 | BFD_ASSERT (!elf_flags_init (abfd) | |
4195 | || elf_elfheader (abfd)->e_flags == flags); | |
4196 | ||
4197 | elf_elfheader (abfd)->e_flags = flags; | |
4198 | elf_flags_init (abfd) = TRUE; | |
4199 | return TRUE; | |
4200 | } | |
4201 | ||
4202 | /* Merge backend specific data from an object file to the output | |
4203 | object file when linking. */ | |
4204 | static bfd_boolean | |
4205 | elf64_ia64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
4206 | { | |
4207 | flagword out_flags; | |
4208 | flagword in_flags; | |
4209 | bfd_boolean ok = TRUE; | |
4210 | ||
4211 | /* Don't even pretend to support mixed-format linking. */ | |
4212 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4213 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
4214 | return FALSE; | |
4215 | ||
4216 | in_flags = elf_elfheader (ibfd)->e_flags; | |
4217 | out_flags = elf_elfheader (obfd)->e_flags; | |
4218 | ||
4219 | if (! elf_flags_init (obfd)) | |
4220 | { | |
4221 | elf_flags_init (obfd) = TRUE; | |
4222 | elf_elfheader (obfd)->e_flags = in_flags; | |
4223 | ||
4224 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
4225 | && bfd_get_arch_info (obfd)->the_default) | |
4226 | { | |
4227 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
4228 | bfd_get_mach (ibfd)); | |
4229 | } | |
4230 | ||
4231 | return TRUE; | |
4232 | } | |
4233 | ||
4234 | /* Check flag compatibility. */ | |
4235 | if (in_flags == out_flags) | |
4236 | return TRUE; | |
4237 | ||
4238 | /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ | |
4239 | if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) | |
4240 | elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; | |
4241 | ||
4242 | if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) | |
4243 | { | |
4244 | (*_bfd_error_handler) | |
4245 | (_("%B: linking trap-on-NULL-dereference with non-trapping files"), | |
4246 | ibfd); | |
4247 | ||
4248 | bfd_set_error (bfd_error_bad_value); | |
4249 | ok = FALSE; | |
4250 | } | |
4251 | if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) | |
4252 | { | |
4253 | (*_bfd_error_handler) | |
4254 | (_("%B: linking big-endian files with little-endian files"), | |
4255 | ibfd); | |
4256 | ||
4257 | bfd_set_error (bfd_error_bad_value); | |
4258 | ok = FALSE; | |
4259 | } | |
4260 | if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) | |
4261 | { | |
4262 | (*_bfd_error_handler) | |
4263 | (_("%B: linking 64-bit files with 32-bit files"), | |
4264 | ibfd); | |
4265 | ||
4266 | bfd_set_error (bfd_error_bad_value); | |
4267 | ok = FALSE; | |
4268 | } | |
4269 | if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) | |
4270 | { | |
4271 | (*_bfd_error_handler) | |
4272 | (_("%B: linking constant-gp files with non-constant-gp files"), | |
4273 | ibfd); | |
4274 | ||
4275 | bfd_set_error (bfd_error_bad_value); | |
4276 | ok = FALSE; | |
4277 | } | |
4278 | if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) | |
4279 | != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) | |
4280 | { | |
4281 | (*_bfd_error_handler) | |
4282 | (_("%B: linking auto-pic files with non-auto-pic files"), | |
4283 | ibfd); | |
4284 | ||
4285 | bfd_set_error (bfd_error_bad_value); | |
4286 | ok = FALSE; | |
4287 | } | |
4288 | ||
4289 | return ok; | |
4290 | } | |
4291 | ||
4292 | static bfd_boolean | |
4293 | elf64_ia64_print_private_bfd_data (bfd *abfd, void * ptr) | |
4294 | { | |
4295 | FILE *file = (FILE *) ptr; | |
4296 | flagword flags = elf_elfheader (abfd)->e_flags; | |
4297 | ||
4298 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
4299 | ||
4300 | fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", | |
4301 | (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", | |
4302 | (flags & EF_IA_64_EXT) ? "EXT, " : "", | |
4303 | (flags & EF_IA_64_BE) ? "BE, " : "LE, ", | |
4304 | (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", | |
4305 | (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", | |
4306 | (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", | |
4307 | (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", | |
4308 | (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); | |
4309 | ||
4310 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4311 | return TRUE; | |
4312 | } | |
4313 | ||
4314 | static enum elf_reloc_type_class | |
7e612e98 AM |
4315 | elf64_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4316 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
4317 | const Elf_Internal_Rela *rela) | |
202e2356 NC |
4318 | { |
4319 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
4320 | { | |
4321 | case R_IA64_REL32MSB: | |
4322 | case R_IA64_REL32LSB: | |
4323 | case R_IA64_REL64MSB: | |
4324 | case R_IA64_REL64LSB: | |
4325 | return reloc_class_relative; | |
4326 | case R_IA64_IPLTMSB: | |
4327 | case R_IA64_IPLTLSB: | |
4328 | return reloc_class_plt; | |
4329 | case R_IA64_COPY: | |
4330 | return reloc_class_copy; | |
4331 | default: | |
4332 | return reloc_class_normal; | |
4333 | } | |
4334 | } | |
4335 | ||
4336 | static const struct bfd_elf_special_section elf64_ia64_special_sections[] = | |
4337 | { | |
4338 | { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, | |
4339 | { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, | |
4340 | { NULL, 0, 0, 0, 0 } | |
4341 | }; | |
4342 | ||
4343 | static bfd_boolean | |
4344 | elf64_ia64_object_p (bfd *abfd) | |
4345 | { | |
4346 | asection *sec; | |
4347 | asection *group, *unwi, *unw; | |
4348 | flagword flags; | |
4349 | const char *name; | |
4350 | char *unwi_name, *unw_name; | |
4351 | bfd_size_type amt; | |
4352 | ||
4353 | if (abfd->flags & DYNAMIC) | |
4354 | return TRUE; | |
4355 | ||
4356 | /* Flags for fake group section. */ | |
4357 | flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE | |
4358 | | SEC_EXCLUDE); | |
4359 | ||
4360 | /* We add a fake section group for each .gnu.linkonce.t.* section, | |
4361 | which isn't in a section group, and its unwind sections. */ | |
4362 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
4363 | { | |
4364 | if (elf_sec_group (sec) == NULL | |
4365 | && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP)) | |
4366 | == (SEC_LINK_ONCE | SEC_CODE)) | |
4367 | && CONST_STRNEQ (sec->name, ".gnu.linkonce.t.")) | |
4368 | { | |
4369 | name = sec->name + 16; | |
4370 | ||
4371 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi."); | |
4372 | unwi_name = bfd_alloc (abfd, amt); | |
4373 | if (!unwi_name) | |
4374 | return FALSE; | |
4375 | ||
4376 | strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name); | |
4377 | unwi = bfd_get_section_by_name (abfd, unwi_name); | |
4378 | ||
4379 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw."); | |
4380 | unw_name = bfd_alloc (abfd, amt); | |
4381 | if (!unw_name) | |
4382 | return FALSE; | |
4383 | ||
4384 | strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name); | |
4385 | unw = bfd_get_section_by_name (abfd, unw_name); | |
4386 | ||
4387 | /* We need to create a fake group section for it and its | |
4388 | unwind sections. */ | |
4389 | group = bfd_make_section_anyway_with_flags (abfd, name, | |
4390 | flags); | |
4391 | if (group == NULL) | |
4392 | return FALSE; | |
4393 | ||
4394 | /* Move the fake group section to the beginning. */ | |
4395 | bfd_section_list_remove (abfd, group); | |
4396 | bfd_section_list_prepend (abfd, group); | |
4397 | ||
4398 | elf_next_in_group (group) = sec; | |
4399 | ||
4400 | elf_group_name (sec) = name; | |
4401 | elf_next_in_group (sec) = sec; | |
4402 | elf_sec_group (sec) = group; | |
4403 | ||
4404 | if (unwi) | |
4405 | { | |
4406 | elf_group_name (unwi) = name; | |
4407 | elf_next_in_group (unwi) = sec; | |
4408 | elf_next_in_group (sec) = unwi; | |
4409 | elf_sec_group (unwi) = group; | |
4410 | } | |
4411 | ||
4412 | if (unw) | |
4413 | { | |
4414 | elf_group_name (unw) = name; | |
4415 | if (unwi) | |
4416 | { | |
4417 | elf_next_in_group (unw) = elf_next_in_group (unwi); | |
4418 | elf_next_in_group (unwi) = unw; | |
4419 | } | |
4420 | else | |
4421 | { | |
4422 | elf_next_in_group (unw) = sec; | |
4423 | elf_next_in_group (sec) = unw; | |
4424 | } | |
4425 | elf_sec_group (unw) = group; | |
4426 | } | |
4427 | ||
4428 | /* Fake SHT_GROUP section header. */ | |
4429 | elf_section_data (group)->this_hdr.bfd_section = group; | |
4430 | elf_section_data (group)->this_hdr.sh_type = SHT_GROUP; | |
4431 | } | |
4432 | } | |
4433 | return TRUE; | |
4434 | } | |
4435 | ||
4436 | /* Handle an IA-64 specific section when reading an object file. This | |
4437 | is called when bfd_section_from_shdr finds a section with an unknown | |
4438 | type. */ | |
4439 | ||
4440 | static bfd_boolean | |
4441 | elf64_vms_section_from_shdr (bfd *abfd, | |
4442 | Elf_Internal_Shdr *hdr, | |
4443 | const char *name, | |
4444 | int shindex) | |
4445 | { | |
4446 | flagword secflags = 0; | |
4447 | ||
4448 | switch (hdr->sh_type) | |
4449 | { | |
4450 | case SHT_IA_64_VMS_TRACE: | |
4451 | case SHT_IA_64_VMS_DEBUG: | |
4452 | case SHT_IA_64_VMS_DEBUG_STR: | |
4453 | secflags = SEC_DEBUGGING; | |
4454 | break; | |
4455 | ||
4456 | case SHT_IA_64_UNWIND: | |
4457 | case SHT_IA_64_HP_OPT_ANOT: | |
4458 | break; | |
4459 | ||
4460 | case SHT_IA_64_EXT: | |
4461 | if (strcmp (name, ELF_STRING_ia64_archext) != 0) | |
4462 | return FALSE; | |
4463 | break; | |
4464 | ||
4465 | default: | |
4466 | return FALSE; | |
4467 | } | |
4468 | ||
4469 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
4470 | return FALSE; | |
4471 | ||
4472 | if (secflags != 0) | |
4473 | { | |
4474 | asection *newsect = hdr->bfd_section; | |
4475 | ||
4476 | if (! bfd_set_section_flags | |
4477 | (abfd, newsect, bfd_get_section_flags (abfd, newsect) | secflags)) | |
4478 | return FALSE; | |
4479 | } | |
4480 | ||
4481 | return TRUE; | |
4482 | } | |
4483 | ||
4484 | static bfd_boolean | |
4485 | elf64_vms_object_p (bfd *abfd) | |
4486 | { | |
4487 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
4488 | Elf_Internal_Phdr *i_phdr = elf_tdata (abfd)->phdr; | |
4489 | unsigned int i; | |
4490 | unsigned int num_text = 0; | |
4491 | unsigned int num_data = 0; | |
4492 | unsigned int num_rodata = 0; | |
4493 | char name[16]; | |
4494 | ||
4495 | if (!elf64_ia64_object_p (abfd)) | |
4496 | return FALSE; | |
4497 | ||
4498 | /* Many VMS compilers do not generate sections for the corresponding | |
4499 | segment. This is boring as binutils tools won't be able to disassemble | |
4500 | the code. So we simply create all the missing sections. */ | |
4501 | for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++) | |
4502 | { | |
4503 | /* Is there a section for this segment? */ | |
4504 | bfd_vma base_vma = i_phdr->p_vaddr; | |
4505 | bfd_vma limit_vma = base_vma + i_phdr->p_filesz; | |
4506 | ||
4507 | if (i_phdr->p_type != PT_LOAD) | |
4508 | continue; | |
4509 | ||
4510 | /* We need to cover from base_vms to limit_vma. */ | |
4511 | again: | |
4512 | while (base_vma < limit_vma) | |
4513 | { | |
4514 | bfd_vma next_vma = limit_vma; | |
4515 | asection *nsec; | |
4516 | asection *sec; | |
4517 | flagword flags; | |
4518 | char *nname = NULL; | |
4519 | ||
4520 | /* Find a section covering [base_vma;limit_vma) */ | |
4521 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
4522 | { | |
4523 | /* Skip uninteresting sections (either not in memory or | |
4524 | below base_vma. */ | |
4525 | if ((sec->flags & (SEC_ALLOC | SEC_LOAD)) == 0 | |
4526 | || sec->vma + sec->size <= base_vma) | |
4527 | continue; | |
4528 | if (sec->vma <= base_vma) | |
4529 | { | |
4530 | /* This section covers (maybe partially) the beginning | |
4531 | of the range. */ | |
4532 | base_vma = sec->vma + sec->size; | |
4533 | goto again; | |
4534 | } | |
4535 | if (sec->vma < next_vma) | |
4536 | { | |
4537 | /* This section partially covers the end of the range. | |
4538 | Used to compute the size of the hole. */ | |
4539 | next_vma = sec->vma; | |
4540 | } | |
4541 | } | |
4542 | ||
4543 | /* No section covering [base_vma; next_vma). Create a fake one. */ | |
4544 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
4545 | if (i_phdr->p_flags & PF_X) | |
4546 | { | |
4547 | flags |= SEC_CODE; | |
4548 | if (num_text++ == 0) | |
4549 | nname = ".text"; | |
4550 | else | |
4551 | sprintf (name, ".text$%u", num_text); | |
4552 | } | |
4553 | else if ((i_phdr->p_flags & (PF_R | PF_W)) == PF_R) | |
4554 | { | |
4555 | flags |= SEC_READONLY; | |
4556 | sprintf (name, ".rodata$%u", num_rodata++); | |
4557 | } | |
4558 | else | |
4559 | { | |
4560 | flags |= SEC_DATA; | |
4561 | sprintf (name, ".data$%u", num_data++); | |
4562 | } | |
4563 | ||
4564 | /* Allocate name. */ | |
4565 | if (nname == NULL) | |
4566 | { | |
4567 | size_t name_len = strlen (name) + 1; | |
4568 | nname = bfd_alloc (abfd, name_len); | |
4569 | if (nname == NULL) | |
4570 | return FALSE; | |
4571 | memcpy (nname, name, name_len); | |
4572 | } | |
4573 | ||
4574 | /* Create and fill new section. */ | |
4575 | nsec = bfd_make_section_anyway_with_flags (abfd, nname, flags); | |
4576 | if (nsec == NULL) | |
4577 | return FALSE; | |
4578 | nsec->vma = base_vma; | |
4579 | nsec->size = next_vma - base_vma; | |
4580 | nsec->filepos = i_phdr->p_offset + (base_vma - i_phdr->p_vaddr); | |
4581 | ||
4582 | base_vma = next_vma; | |
4583 | } | |
4584 | } | |
4585 | return TRUE; | |
4586 | } | |
4587 | ||
4588 | static void | |
4589 | elf64_vms_post_process_headers (bfd *abfd, | |
4590 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
4591 | { | |
4592 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
4593 | ||
4594 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_OPENVMS; | |
4595 | i_ehdrp->e_ident[EI_ABIVERSION] = 2; | |
4596 | } | |
4597 | ||
4598 | static bfd_boolean | |
4599 | elf64_vms_section_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
4600 | Elf_Internal_Shdr *hdr) | |
4601 | { | |
4602 | if (hdr->bfd_section != NULL) | |
4603 | { | |
4604 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); | |
4605 | ||
4606 | if (strcmp (name, ".text") == 0) | |
4607 | hdr->sh_flags |= SHF_IA_64_VMS_SHARED; | |
4608 | else if ((strcmp (name, ".debug") == 0) | |
4609 | || (strcmp (name, ".debug_abbrev") == 0) | |
4610 | || (strcmp (name, ".debug_aranges") == 0) | |
4611 | || (strcmp (name, ".debug_frame") == 0) | |
4612 | || (strcmp (name, ".debug_info") == 0) | |
4613 | || (strcmp (name, ".debug_loc") == 0) | |
4614 | || (strcmp (name, ".debug_macinfo") == 0) | |
4615 | || (strcmp (name, ".debug_pubnames") == 0) | |
4616 | || (strcmp (name, ".debug_pubtypes") == 0)) | |
4617 | hdr->sh_type = SHT_IA_64_VMS_DEBUG; | |
4618 | else if ((strcmp (name, ".debug_line") == 0) | |
4619 | || (strcmp (name, ".debug_ranges") == 0) | |
4620 | || (strcmp (name, ".trace_info") == 0) | |
4621 | || (strcmp (name, ".trace_abbrev") == 0) | |
4622 | || (strcmp (name, ".trace_aranges") == 0)) | |
4623 | hdr->sh_type = SHT_IA_64_VMS_TRACE; | |
4624 | else if (strcmp (name, ".debug_str") == 0) | |
4625 | hdr->sh_type = SHT_IA_64_VMS_DEBUG_STR; | |
4626 | } | |
4627 | ||
4628 | return TRUE; | |
4629 | } | |
4630 | ||
4631 | /* The final processing done just before writing out a VMS IA-64 ELF | |
4632 | object file. */ | |
4633 | ||
4634 | static void | |
4635 | elf64_vms_final_write_processing (bfd *abfd, | |
4636 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
4637 | { | |
4638 | Elf_Internal_Shdr *hdr; | |
4639 | asection *s; | |
4640 | int unwind_info_sect_idx = 0; | |
4641 | ||
4642 | for (s = abfd->sections; s; s = s->next) | |
4643 | { | |
4644 | hdr = &elf_section_data (s)->this_hdr; | |
4645 | ||
4646 | if (strcmp (bfd_get_section_name (abfd, hdr->bfd_section), | |
4647 | ".IA_64.unwind_info") == 0) | |
4648 | unwind_info_sect_idx = elf_section_data (s)->this_idx; | |
4649 | ||
4650 | switch (hdr->sh_type) | |
4651 | { | |
4652 | case SHT_IA_64_UNWIND: | |
4653 | /* VMS requires sh_info to point to the unwind info section. */ | |
4654 | hdr->sh_info = unwind_info_sect_idx; | |
4655 | break; | |
4656 | } | |
4657 | } | |
4658 | ||
4659 | if (! elf_flags_init (abfd)) | |
4660 | { | |
4661 | unsigned long flags = 0; | |
4662 | ||
4663 | if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) | |
4664 | flags |= EF_IA_64_BE; | |
4665 | if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) | |
4666 | flags |= EF_IA_64_ABI64; | |
4667 | ||
4668 | elf_elfheader (abfd)->e_flags = flags; | |
4669 | elf_flags_init (abfd) = TRUE; | |
4670 | } | |
4671 | } | |
4672 | ||
4673 | static bfd_boolean | |
4674 | elf64_vms_write_shdrs_and_ehdr (bfd *abfd) | |
4675 | { | |
4676 | unsigned char needed_count[8]; | |
4677 | ||
4678 | if (!bfd_elf64_write_shdrs_and_ehdr (abfd)) | |
4679 | return FALSE; | |
4680 | ||
4681 | bfd_putl64 (elf_ia64_vms_tdata (abfd)->needed_count, needed_count); | |
4682 | ||
4683 | if (bfd_seek (abfd, sizeof (Elf64_External_Ehdr), SEEK_SET) != 0 | |
4684 | || bfd_bwrite (needed_count, 8, abfd) != 8) | |
4685 | return FALSE; | |
4686 | ||
4687 | return TRUE; | |
4688 | } | |
4689 | ||
4690 | static bfd_boolean | |
4691 | elf64_vms_close_and_cleanup (bfd *abfd) | |
4692 | { | |
4693 | if (bfd_get_format (abfd) == bfd_object) | |
4694 | { | |
4695 | long isize; | |
4696 | ||
4697 | /* Pad to 8 byte boundary for IPF/VMS. */ | |
4698 | isize = bfd_get_size (abfd); | |
4699 | if ((isize & 7) != 0) | |
4700 | { | |
4701 | int ishort = 8 - (isize & 7); | |
4702 | bfd_uint64_t pad = 0; | |
4703 | ||
4704 | bfd_seek (abfd, isize, SEEK_SET); | |
4705 | bfd_bwrite (&pad, ishort, abfd); | |
4706 | } | |
4707 | } | |
4708 | ||
4709 | return _bfd_elf_close_and_cleanup (abfd); | |
4710 | } | |
4711 | ||
4712 | /* Add symbols from an ELF object file to the linker hash table. */ | |
4713 | ||
4714 | static bfd_boolean | |
4715 | elf64_vms_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) | |
4716 | { | |
4717 | Elf_Internal_Shdr *hdr; | |
4718 | bfd_size_type symcount; | |
4719 | bfd_size_type extsymcount; | |
4720 | bfd_size_type extsymoff; | |
4721 | struct elf_link_hash_entry **sym_hash; | |
4722 | bfd_boolean dynamic; | |
4723 | Elf_Internal_Sym *isymbuf = NULL; | |
4724 | Elf_Internal_Sym *isym; | |
4725 | Elf_Internal_Sym *isymend; | |
4726 | const struct elf_backend_data *bed; | |
4727 | struct elf_link_hash_table *htab; | |
4728 | bfd_size_type amt; | |
4729 | ||
4730 | htab = elf_hash_table (info); | |
4731 | bed = get_elf_backend_data (abfd); | |
4732 | ||
4733 | if ((abfd->flags & DYNAMIC) == 0) | |
4734 | dynamic = FALSE; | |
4735 | else | |
4736 | { | |
4737 | dynamic = TRUE; | |
4738 | ||
4739 | /* You can't use -r against a dynamic object. Also, there's no | |
4740 | hope of using a dynamic object which does not exactly match | |
4741 | the format of the output file. */ | |
4742 | if (info->relocatable | |
4743 | || !is_elf_hash_table (htab) | |
4744 | || info->output_bfd->xvec != abfd->xvec) | |
4745 | { | |
4746 | if (info->relocatable) | |
4747 | bfd_set_error (bfd_error_invalid_operation); | |
4748 | else | |
4749 | bfd_set_error (bfd_error_wrong_format); | |
4750 | goto error_return; | |
4751 | } | |
4752 | } | |
4753 | ||
4754 | if (! dynamic) | |
4755 | { | |
4756 | /* If we are creating a shared library, create all the dynamic | |
4757 | sections immediately. We need to attach them to something, | |
4758 | so we attach them to this BFD, provided it is the right | |
4759 | format. FIXME: If there are no input BFD's of the same | |
4760 | format as the output, we can't make a shared library. */ | |
4761 | if (info->shared | |
4762 | && is_elf_hash_table (htab) | |
4763 | && info->output_bfd->xvec == abfd->xvec | |
4764 | && !htab->dynamic_sections_created) | |
4765 | { | |
4766 | if (! elf64_ia64_create_dynamic_sections (abfd, info)) | |
4767 | goto error_return; | |
4768 | } | |
4769 | } | |
4770 | else if (!is_elf_hash_table (htab)) | |
4771 | goto error_return; | |
4772 | else | |
4773 | { | |
4774 | asection *s; | |
4775 | bfd_byte *dynbuf; | |
4776 | bfd_byte *extdyn; | |
4777 | ||
4778 | /* ld --just-symbols and dynamic objects don't mix very well. | |
4779 | ld shouldn't allow it. */ | |
4780 | if ((s = abfd->sections) != NULL | |
dbaa2011 | 4781 | && s->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
202e2356 NC |
4782 | abort (); |
4783 | ||
4784 | /* Be sure there are dynamic sections. */ | |
4785 | if (! elf64_ia64_create_dynamic_sections (htab->dynobj, info)) | |
4786 | goto error_return; | |
4787 | ||
4788 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
4789 | if (s == NULL) | |
4790 | { | |
4791 | /* VMS libraries do not have dynamic sections. Create one from | |
4792 | the segment. */ | |
4793 | Elf_Internal_Phdr *phdr; | |
4794 | unsigned int i, phnum; | |
4795 | ||
4796 | phdr = elf_tdata (abfd)->phdr; | |
4797 | if (phdr == NULL) | |
4798 | goto error_return; | |
4799 | phnum = elf_elfheader (abfd)->e_phnum; | |
4800 | for (i = 0; i < phnum; phdr++) | |
4801 | if (phdr->p_type == PT_DYNAMIC) | |
4802 | { | |
4803 | s = bfd_make_section (abfd, ".dynamic"); | |
4804 | if (s == NULL) | |
4805 | goto error_return; | |
4806 | s->vma = phdr->p_vaddr; | |
4807 | s->lma = phdr->p_paddr; | |
4808 | s->size = phdr->p_filesz; | |
4809 | s->filepos = phdr->p_offset; | |
4810 | s->flags |= SEC_HAS_CONTENTS; | |
4811 | s->alignment_power = bfd_log2 (phdr->p_align); | |
4812 | break; | |
4813 | } | |
4814 | if (s == NULL) | |
4815 | goto error_return; | |
4816 | } | |
4817 | ||
4818 | /* Extract IDENT. */ | |
4819 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) | |
4820 | { | |
4821 | error_free_dyn: | |
4822 | free (dynbuf); | |
4823 | goto error_return; | |
4824 | } | |
4825 | ||
4826 | for (extdyn = dynbuf; | |
4827 | extdyn < dynbuf + s->size; | |
4828 | extdyn += bed->s->sizeof_dyn) | |
4829 | { | |
4830 | Elf_Internal_Dyn dyn; | |
4831 | ||
4832 | bed->s->swap_dyn_in (abfd, extdyn, &dyn); | |
4833 | if (dyn.d_tag == DT_IA_64_VMS_IDENT) | |
4834 | { | |
4835 | bfd_uint64_t tagv = dyn.d_un.d_val; | |
4836 | elf_ia64_vms_ident (abfd) = tagv; | |
4837 | break; | |
4838 | } | |
4839 | } | |
4840 | if (extdyn >= dynbuf + s->size) | |
4841 | { | |
4842 | /* Ident not found. */ | |
4843 | goto error_free_dyn; | |
4844 | } | |
4845 | free (dynbuf); | |
4846 | ||
4847 | /* We do not want to include any of the sections in a dynamic | |
4848 | object in the output file. We hack by simply clobbering the | |
4849 | list of sections in the BFD. This could be handled more | |
4850 | cleanly by, say, a new section flag; the existing | |
4851 | SEC_NEVER_LOAD flag is not the one we want, because that one | |
4852 | still implies that the section takes up space in the output | |
4853 | file. */ | |
4854 | bfd_section_list_clear (abfd); | |
4855 | ||
4856 | /* FIXME: should we detect if this library is already included ? | |
4857 | This should be harmless and shouldn't happen in practice. */ | |
4858 | } | |
4859 | ||
4860 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
4861 | symcount = hdr->sh_size / bed->s->sizeof_sym; | |
4862 | ||
4863 | /* The sh_info field of the symtab header tells us where the | |
4864 | external symbols start. We don't care about the local symbols at | |
4865 | this point. */ | |
4866 | extsymcount = symcount - hdr->sh_info; | |
4867 | extsymoff = hdr->sh_info; | |
4868 | ||
4869 | sym_hash = NULL; | |
4870 | if (extsymcount != 0) | |
4871 | { | |
4872 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff, | |
4873 | NULL, NULL, NULL); | |
4874 | if (isymbuf == NULL) | |
4875 | goto error_return; | |
4876 | ||
4877 | /* We store a pointer to the hash table entry for each external | |
4878 | symbol. */ | |
4879 | amt = extsymcount * sizeof (struct elf_link_hash_entry *); | |
4880 | sym_hash = (struct elf_link_hash_entry **) bfd_alloc (abfd, amt); | |
4881 | if (sym_hash == NULL) | |
4882 | goto error_free_sym; | |
4883 | elf_sym_hashes (abfd) = sym_hash; | |
4884 | } | |
4885 | ||
4886 | for (isym = isymbuf, isymend = isymbuf + extsymcount; | |
4887 | isym < isymend; | |
4888 | isym++, sym_hash++) | |
4889 | { | |
4890 | int bind; | |
4891 | bfd_vma value; | |
4892 | asection *sec, *new_sec; | |
4893 | flagword flags; | |
4894 | const char *name; | |
4895 | struct elf_link_hash_entry *h; | |
4896 | bfd_boolean definition; | |
4897 | bfd_boolean size_change_ok; | |
4898 | bfd_boolean type_change_ok; | |
4899 | bfd_boolean common; | |
4900 | unsigned int old_alignment; | |
4901 | bfd *old_bfd; | |
4902 | ||
4903 | flags = BSF_NO_FLAGS; | |
4904 | sec = NULL; | |
4905 | value = isym->st_value; | |
4906 | *sym_hash = NULL; | |
4907 | common = bed->common_definition (isym); | |
4908 | ||
4909 | bind = ELF_ST_BIND (isym->st_info); | |
4910 | switch (bind) | |
4911 | { | |
4912 | case STB_LOCAL: | |
4913 | /* This should be impossible, since ELF requires that all | |
4914 | global symbols follow all local symbols, and that sh_info | |
4915 | point to the first global symbol. Unfortunately, Irix 5 | |
4916 | screws this up. */ | |
4917 | continue; | |
4918 | ||
4919 | case STB_GLOBAL: | |
4920 | if (isym->st_shndx != SHN_UNDEF && !common) | |
4921 | flags = BSF_GLOBAL; | |
4922 | break; | |
4923 | ||
4924 | case STB_WEAK: | |
4925 | flags = BSF_WEAK; | |
4926 | break; | |
4927 | ||
4928 | case STB_GNU_UNIQUE: | |
4929 | flags = BSF_GNU_UNIQUE; | |
4930 | break; | |
4931 | ||
4932 | default: | |
4933 | /* Leave it up to the processor backend. */ | |
4934 | break; | |
4935 | } | |
4936 | ||
4937 | if (isym->st_shndx == SHN_UNDEF) | |
4938 | sec = bfd_und_section_ptr; | |
4939 | else if (isym->st_shndx == SHN_ABS) | |
4940 | sec = bfd_abs_section_ptr; | |
4941 | else if (isym->st_shndx == SHN_COMMON) | |
4942 | { | |
4943 | sec = bfd_com_section_ptr; | |
4944 | /* What ELF calls the size we call the value. What ELF | |
4945 | calls the value we call the alignment. */ | |
4946 | value = isym->st_size; | |
4947 | } | |
4948 | else | |
4949 | { | |
4950 | sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4951 | if (sec == NULL) | |
4952 | sec = bfd_abs_section_ptr; | |
4953 | else if (sec->kept_section) | |
4954 | { | |
4955 | /* Symbols from discarded section are undefined. We keep | |
4956 | its visibility. */ | |
4957 | sec = bfd_und_section_ptr; | |
4958 | isym->st_shndx = SHN_UNDEF; | |
4959 | } | |
4960 | else if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
4961 | value -= sec->vma; | |
4962 | } | |
4963 | ||
4964 | name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
4965 | isym->st_name); | |
4966 | if (name == NULL) | |
4967 | goto error_free_vers; | |
4968 | ||
4969 | if (bed->elf_add_symbol_hook) | |
4970 | { | |
4971 | if (! (*bed->elf_add_symbol_hook) (abfd, info, isym, &name, &flags, | |
4972 | &sec, &value)) | |
4973 | goto error_free_vers; | |
4974 | ||
4975 | /* The hook function sets the name to NULL if this symbol | |
4976 | should be skipped for some reason. */ | |
4977 | if (name == NULL) | |
4978 | continue; | |
4979 | } | |
4980 | ||
4981 | /* Sanity check that all possibilities were handled. */ | |
4982 | if (sec == NULL) | |
4983 | { | |
4984 | bfd_set_error (bfd_error_bad_value); | |
4985 | goto error_free_vers; | |
4986 | } | |
4987 | ||
4988 | if (bfd_is_und_section (sec) | |
4989 | || bfd_is_com_section (sec)) | |
4990 | definition = FALSE; | |
4991 | else | |
4992 | definition = TRUE; | |
4993 | ||
4994 | size_change_ok = FALSE; | |
4995 | type_change_ok = bed->type_change_ok; | |
4996 | old_alignment = 0; | |
4997 | old_bfd = NULL; | |
4998 | new_sec = sec; | |
4999 | ||
5000 | if (! bfd_is_und_section (sec)) | |
5001 | h = elf_link_hash_lookup (htab, name, TRUE, FALSE, FALSE); | |
5002 | else | |
5003 | h = ((struct elf_link_hash_entry *) bfd_wrapped_link_hash_lookup | |
5004 | (abfd, info, name, TRUE, FALSE, FALSE)); | |
5005 | if (h == NULL) | |
5006 | goto error_free_sym; | |
5007 | ||
5008 | *sym_hash = h; | |
5009 | ||
5010 | if (is_elf_hash_table (htab)) | |
5011 | { | |
5012 | while (h->root.type == bfd_link_hash_indirect | |
5013 | || h->root.type == bfd_link_hash_warning) | |
5014 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5015 | ||
5016 | /* Remember the old alignment if this is a common symbol, so | |
5017 | that we don't reduce the alignment later on. We can't | |
5018 | check later, because _bfd_generic_link_add_one_symbol | |
5019 | will set a default for the alignment which we want to | |
5020 | override. We also remember the old bfd where the existing | |
5021 | definition comes from. */ | |
5022 | switch (h->root.type) | |
5023 | { | |
5024 | default: | |
5025 | break; | |
5026 | ||
5027 | case bfd_link_hash_defined: | |
5028 | if (abfd->selective_search) | |
5029 | continue; | |
5030 | /* Fall-through. */ | |
5031 | case bfd_link_hash_defweak: | |
5032 | old_bfd = h->root.u.def.section->owner; | |
5033 | break; | |
5034 | ||
5035 | case bfd_link_hash_common: | |
5036 | old_bfd = h->root.u.c.p->section->owner; | |
5037 | old_alignment = h->root.u.c.p->alignment_power; | |
5038 | break; | |
5039 | } | |
5040 | } | |
5041 | ||
5042 | if (! (_bfd_generic_link_add_one_symbol | |
5043 | (info, abfd, name, flags, sec, value, NULL, FALSE, bed->collect, | |
5044 | (struct bfd_link_hash_entry **) sym_hash))) | |
5045 | goto error_free_vers; | |
5046 | ||
5047 | h = *sym_hash; | |
5048 | while (h->root.type == bfd_link_hash_indirect | |
5049 | || h->root.type == bfd_link_hash_warning) | |
5050 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5051 | ||
5052 | *sym_hash = h; | |
35399224 L |
5053 | if (definition) |
5054 | h->unique_global = (flags & BSF_GNU_UNIQUE) != 0; | |
202e2356 NC |
5055 | |
5056 | /* Set the alignment of a common symbol. */ | |
5057 | if ((common || bfd_is_com_section (sec)) | |
5058 | && h->root.type == bfd_link_hash_common) | |
5059 | { | |
5060 | unsigned int align; | |
5061 | ||
5062 | if (common) | |
5063 | align = bfd_log2 (isym->st_value); | |
5064 | else | |
5065 | { | |
5066 | /* The new symbol is a common symbol in a shared object. | |
5067 | We need to get the alignment from the section. */ | |
5068 | align = new_sec->alignment_power; | |
5069 | } | |
5070 | if (align > old_alignment | |
5071 | /* Permit an alignment power of zero if an alignment of one | |
5072 | is specified and no other alignments have been specified. */ | |
5073 | || (isym->st_value == 1 && old_alignment == 0)) | |
5074 | h->root.u.c.p->alignment_power = align; | |
5075 | else | |
5076 | h->root.u.c.p->alignment_power = old_alignment; | |
5077 | } | |
5078 | ||
5079 | if (is_elf_hash_table (htab)) | |
5080 | { | |
5081 | /* Check the alignment when a common symbol is involved. This | |
5082 | can change when a common symbol is overridden by a normal | |
5083 | definition or a common symbol is ignored due to the old | |
5084 | normal definition. We need to make sure the maximum | |
5085 | alignment is maintained. */ | |
5086 | if ((old_alignment || common) | |
5087 | && h->root.type != bfd_link_hash_common) | |
5088 | { | |
5089 | unsigned int common_align; | |
5090 | unsigned int normal_align; | |
5091 | unsigned int symbol_align; | |
5092 | bfd *normal_bfd; | |
5093 | bfd *common_bfd; | |
5094 | ||
5095 | symbol_align = ffs (h->root.u.def.value) - 1; | |
5096 | if (h->root.u.def.section->owner != NULL | |
5097 | && (h->root.u.def.section->owner->flags & DYNAMIC) == 0) | |
5098 | { | |
5099 | normal_align = h->root.u.def.section->alignment_power; | |
5100 | if (normal_align > symbol_align) | |
5101 | normal_align = symbol_align; | |
5102 | } | |
5103 | else | |
5104 | normal_align = symbol_align; | |
5105 | ||
5106 | if (old_alignment) | |
5107 | { | |
5108 | common_align = old_alignment; | |
5109 | common_bfd = old_bfd; | |
5110 | normal_bfd = abfd; | |
5111 | } | |
5112 | else | |
5113 | { | |
5114 | common_align = bfd_log2 (isym->st_value); | |
5115 | common_bfd = abfd; | |
5116 | normal_bfd = old_bfd; | |
5117 | } | |
5118 | ||
5119 | if (normal_align < common_align) | |
5120 | { | |
5121 | /* PR binutils/2735 */ | |
5122 | if (normal_bfd == NULL) | |
5123 | (*_bfd_error_handler) | |
5124 | (_("Warning: alignment %u of common symbol `%s' in %B" | |
5125 | " is greater than the alignment (%u) of its section %A"), | |
5126 | common_bfd, h->root.u.def.section, | |
5127 | 1 << common_align, name, 1 << normal_align); | |
5128 | else | |
5129 | (*_bfd_error_handler) | |
5130 | (_("Warning: alignment %u of symbol `%s' in %B" | |
5131 | " is smaller than %u in %B"), | |
5132 | normal_bfd, common_bfd, | |
5133 | 1 << normal_align, name, 1 << common_align); | |
5134 | } | |
5135 | } | |
5136 | ||
5137 | /* Remember the symbol size if it isn't undefined. */ | |
5138 | if ((isym->st_size != 0 && isym->st_shndx != SHN_UNDEF) | |
5139 | && (definition || h->size == 0)) | |
5140 | { | |
5141 | if (h->size != 0 | |
5142 | && h->size != isym->st_size | |
5143 | && ! size_change_ok) | |
5144 | (*_bfd_error_handler) | |
5145 | (_("Warning: size of symbol `%s' changed" | |
5146 | " from %lu in %B to %lu in %B"), | |
5147 | old_bfd, abfd, | |
5148 | name, (unsigned long) h->size, | |
5149 | (unsigned long) isym->st_size); | |
5150 | ||
5151 | h->size = isym->st_size; | |
5152 | } | |
5153 | ||
5154 | /* If this is a common symbol, then we always want H->SIZE | |
5155 | to be the size of the common symbol. The code just above | |
5156 | won't fix the size if a common symbol becomes larger. We | |
5157 | don't warn about a size change here, because that is | |
5158 | covered by --warn-common. Allow changed between different | |
5159 | function types. */ | |
5160 | if (h->root.type == bfd_link_hash_common) | |
5161 | h->size = h->root.u.c.size; | |
5162 | ||
5163 | if (ELF_ST_TYPE (isym->st_info) != STT_NOTYPE | |
5164 | && (definition || h->type == STT_NOTYPE)) | |
5165 | { | |
5166 | unsigned int type = ELF_ST_TYPE (isym->st_info); | |
5167 | ||
5168 | if (h->type != type) | |
5169 | { | |
5170 | if (h->type != STT_NOTYPE && ! type_change_ok) | |
5171 | (*_bfd_error_handler) | |
5172 | (_("Warning: type of symbol `%s' changed" | |
5173 | " from %d to %d in %B"), | |
5174 | abfd, name, h->type, type); | |
5175 | ||
5176 | h->type = type; | |
5177 | } | |
5178 | } | |
5179 | ||
5180 | /* Set a flag in the hash table entry indicating the type of | |
5181 | reference or definition we just found. Keep a count of | |
5182 | the number of dynamic symbols we find. A dynamic symbol | |
5183 | is one which is referenced or defined by both a regular | |
5184 | object and a shared object. */ | |
5185 | if (! dynamic) | |
5186 | { | |
5187 | if (! definition) | |
5188 | { | |
5189 | h->ref_regular = 1; | |
5190 | if (bind != STB_WEAK) | |
5191 | h->ref_regular_nonweak = 1; | |
5192 | } | |
5193 | else | |
5194 | { | |
5195 | BFD_ASSERT (!h->def_dynamic); | |
5196 | h->def_regular = 1; | |
5197 | } | |
5198 | } | |
5199 | else | |
5200 | { | |
5201 | BFD_ASSERT (definition); | |
5202 | h->def_dynamic = 1; | |
5203 | h->dynindx = -2; | |
5204 | ((struct elf64_ia64_link_hash_entry *)h)->shl = abfd; | |
5205 | } | |
5206 | } | |
5207 | } | |
5208 | ||
5209 | if (isymbuf != NULL) | |
5210 | { | |
5211 | free (isymbuf); | |
5212 | isymbuf = NULL; | |
5213 | } | |
5214 | ||
5215 | /* If this object is the same format as the output object, and it is | |
5216 | not a shared library, then let the backend look through the | |
5217 | relocs. | |
5218 | ||
5219 | This is required to build global offset table entries and to | |
5220 | arrange for dynamic relocs. It is not required for the | |
5221 | particular common case of linking non PIC code, even when linking | |
5222 | against shared libraries, but unfortunately there is no way of | |
5223 | knowing whether an object file has been compiled PIC or not. | |
5224 | Looking through the relocs is not particularly time consuming. | |
5225 | The problem is that we must either (1) keep the relocs in memory, | |
5226 | which causes the linker to require additional runtime memory or | |
5227 | (2) read the relocs twice from the input file, which wastes time. | |
5228 | This would be a good case for using mmap. | |
5229 | ||
5230 | I have no idea how to handle linking PIC code into a file of a | |
5231 | different format. It probably can't be done. */ | |
5232 | if (! dynamic | |
5233 | && is_elf_hash_table (htab) | |
5234 | && bed->check_relocs != NULL | |
5235 | && (*bed->relocs_compatible) (abfd->xvec, info->output_bfd->xvec)) | |
5236 | { | |
5237 | asection *o; | |
5238 | ||
5239 | for (o = abfd->sections; o != NULL; o = o->next) | |
5240 | { | |
5241 | Elf_Internal_Rela *internal_relocs; | |
5242 | bfd_boolean ok; | |
5243 | ||
5244 | if ((o->flags & SEC_RELOC) == 0 | |
5245 | || o->reloc_count == 0 | |
5246 | || ((info->strip == strip_all || info->strip == strip_debugger) | |
5247 | && (o->flags & SEC_DEBUGGING) != 0) | |
5248 | || bfd_is_abs_section (o->output_section)) | |
5249 | continue; | |
5250 | ||
5251 | internal_relocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, | |
5252 | info->keep_memory); | |
5253 | if (internal_relocs == NULL) | |
5254 | goto error_return; | |
5255 | ||
5256 | ok = (*bed->check_relocs) (abfd, info, o, internal_relocs); | |
5257 | ||
5258 | if (elf_section_data (o)->relocs != internal_relocs) | |
5259 | free (internal_relocs); | |
5260 | ||
5261 | if (! ok) | |
5262 | goto error_return; | |
5263 | } | |
5264 | } | |
5265 | ||
5266 | return TRUE; | |
5267 | ||
5268 | error_free_vers: | |
5269 | error_free_sym: | |
5270 | if (isymbuf != NULL) | |
5271 | free (isymbuf); | |
5272 | error_return: | |
5273 | return FALSE; | |
5274 | } | |
5275 | ||
5276 | static bfd_boolean | |
5277 | elf64_vms_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info) | |
5278 | { | |
5279 | int pass; | |
5280 | struct bfd_link_hash_entry **pundef; | |
5281 | struct bfd_link_hash_entry **next_pundef; | |
5282 | ||
5283 | /* We only accept VMS libraries. */ | |
5284 | if (info->output_bfd->xvec != abfd->xvec) | |
5285 | { | |
5286 | bfd_set_error (bfd_error_wrong_format); | |
5287 | return FALSE; | |
5288 | } | |
5289 | ||
5290 | /* The archive_pass field in the archive itself is used to | |
5291 | initialize PASS, since we may search the same archive multiple | |
5292 | times. */ | |
5293 | pass = ++abfd->archive_pass; | |
5294 | ||
5295 | /* Look through the list of undefined symbols. */ | |
5296 | for (pundef = &info->hash->undefs; *pundef != NULL; pundef = next_pundef) | |
5297 | { | |
5298 | struct bfd_link_hash_entry *h; | |
5299 | symindex symidx; | |
5300 | bfd *element; | |
5301 | bfd *orig_element; | |
5302 | ||
5303 | h = *pundef; | |
5304 | next_pundef = &(*pundef)->u.undef.next; | |
5305 | ||
5306 | /* When a symbol is defined, it is not necessarily removed from | |
5307 | the list. */ | |
5308 | if (h->type != bfd_link_hash_undefined | |
5309 | && h->type != bfd_link_hash_common) | |
5310 | { | |
5311 | /* Remove this entry from the list, for general cleanliness | |
5312 | and because we are going to look through the list again | |
5313 | if we search any more libraries. We can't remove the | |
5314 | entry if it is the tail, because that would lose any | |
5315 | entries we add to the list later on. */ | |
5316 | if (*pundef != info->hash->undefs_tail) | |
5317 | { | |
5318 | *pundef = *next_pundef; | |
5319 | next_pundef = pundef; | |
5320 | } | |
5321 | continue; | |
5322 | } | |
5323 | ||
5324 | /* Look for this symbol in the archive hash table. */ | |
5325 | symidx = _bfd_vms_lib_find_symbol (abfd, h->root.string); | |
5326 | if (symidx == BFD_NO_MORE_SYMBOLS) | |
5327 | { | |
5328 | /* Nothing in this slot. */ | |
5329 | continue; | |
5330 | } | |
5331 | ||
5332 | element = bfd_get_elt_at_index (abfd, symidx); | |
5333 | if (element == NULL) | |
5334 | return FALSE; | |
5335 | ||
5336 | if (element->archive_pass == -1 || element->archive_pass == pass) | |
5337 | { | |
5338 | /* Next symbol if this archive is wrong or already handled. */ | |
5339 | continue; | |
5340 | } | |
5341 | ||
5342 | orig_element = element; | |
5343 | if (bfd_is_thin_archive (abfd)) | |
5344 | { | |
5345 | element = _bfd_vms_lib_get_imagelib_file (element); | |
5346 | if (element == NULL || !bfd_check_format (element, bfd_object)) | |
5347 | { | |
5348 | orig_element->archive_pass = -1; | |
5349 | return FALSE; | |
5350 | } | |
5351 | } | |
5352 | else if (! bfd_check_format (element, bfd_object)) | |
5353 | { | |
5354 | element->archive_pass = -1; | |
5355 | return FALSE; | |
5356 | } | |
5357 | ||
5358 | /* Unlike the generic linker, we know that this element provides | |
5359 | a definition for an undefined symbol and we know that we want | |
5360 | to include it. We don't need to check anything. */ | |
5361 | if (! (*info->callbacks->add_archive_element) (info, element, | |
5362 | h->root.string, &element)) | |
5363 | return FALSE; | |
5364 | if (! elf64_vms_link_add_object_symbols (element, info)) | |
5365 | return FALSE; | |
5366 | ||
5367 | orig_element->archive_pass = pass; | |
5368 | } | |
5369 | ||
5370 | return TRUE; | |
5371 | } | |
5372 | ||
5373 | static bfd_boolean | |
5374 | elf64_vms_bfd_link_add_symbols (bfd *abfd, struct bfd_link_info *info) | |
5375 | { | |
5376 | switch (bfd_get_format (abfd)) | |
5377 | { | |
5378 | case bfd_object: | |
5379 | return elf64_vms_link_add_object_symbols (abfd, info); | |
5380 | break; | |
5381 | case bfd_archive: | |
5382 | return elf64_vms_link_add_archive_symbols (abfd, info); | |
5383 | break; | |
5384 | default: | |
5385 | bfd_set_error (bfd_error_wrong_format); | |
5386 | return FALSE; | |
5387 | } | |
5388 | } | |
5389 | ||
5390 | static bfd_boolean | |
5391 | elf64_ia64_vms_mkobject (bfd *abfd) | |
5392 | { | |
5393 | return bfd_elf_allocate_object | |
5394 | (abfd, sizeof (struct elf64_ia64_vms_obj_tdata), IA64_ELF_DATA); | |
5395 | } | |
5396 | ||
5397 | ||
5398 | /* Size-dependent data and functions. */ | |
5399 | static const struct elf_size_info elf64_ia64_vms_size_info = { | |
5400 | sizeof (Elf64_External_VMS_Ehdr), | |
5401 | sizeof (Elf64_External_Phdr), | |
5402 | sizeof (Elf64_External_Shdr), | |
5403 | sizeof (Elf64_External_Rel), | |
5404 | sizeof (Elf64_External_Rela), | |
5405 | sizeof (Elf64_External_Sym), | |
5406 | sizeof (Elf64_External_Dyn), | |
5407 | sizeof (Elf_External_Note), | |
5408 | 4, | |
5409 | 1, | |
5410 | 64, 3, /* ARCH_SIZE, LOG_FILE_ALIGN */ | |
5411 | ELFCLASS64, EV_CURRENT, | |
5412 | bfd_elf64_write_out_phdrs, | |
5413 | elf64_vms_write_shdrs_and_ehdr, | |
5414 | bfd_elf64_checksum_contents, | |
5415 | bfd_elf64_write_relocs, | |
5416 | bfd_elf64_swap_symbol_in, | |
5417 | bfd_elf64_swap_symbol_out, | |
5418 | bfd_elf64_slurp_reloc_table, | |
5419 | bfd_elf64_slurp_symbol_table, | |
5420 | bfd_elf64_swap_dyn_in, | |
5421 | bfd_elf64_swap_dyn_out, | |
5422 | bfd_elf64_swap_reloc_in, | |
5423 | bfd_elf64_swap_reloc_out, | |
5424 | bfd_elf64_swap_reloca_in, | |
5425 | bfd_elf64_swap_reloca_out | |
5426 | }; | |
5427 | ||
5428 | #define ELF_ARCH bfd_arch_ia64 | |
5429 | #define ELF_MACHINE_CODE EM_IA_64 | |
5430 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ | |
5431 | #define ELF_COMMONPAGESIZE 0x200 /* 16KB */ | |
5432 | ||
5433 | #define elf_backend_section_from_shdr \ | |
5434 | elf64_ia64_section_from_shdr | |
5435 | #define elf_backend_section_flags \ | |
5436 | elf64_ia64_section_flags | |
5437 | #define elf_backend_fake_sections \ | |
5438 | elf64_ia64_fake_sections | |
5439 | #define elf_backend_final_write_processing \ | |
5440 | elf64_ia64_final_write_processing | |
5441 | #define elf_backend_add_symbol_hook \ | |
5442 | elf64_ia64_add_symbol_hook | |
5443 | #define elf_info_to_howto \ | |
5444 | elf64_ia64_info_to_howto | |
5445 | ||
5446 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5447 | ia64_elf_reloc_type_lookup | |
5448 | #define bfd_elf64_bfd_reloc_name_lookup \ | |
5449 | ia64_elf_reloc_name_lookup | |
5450 | #define bfd_elf64_bfd_is_local_label_name \ | |
5451 | elf64_ia64_is_local_label_name | |
5452 | #define bfd_elf64_bfd_relax_section \ | |
5453 | elf64_ia64_relax_section | |
5454 | ||
5455 | #define elf_backend_object_p \ | |
5456 | elf64_ia64_object_p | |
5457 | ||
5458 | /* Stuff for the BFD linker: */ | |
5459 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5460 | elf64_ia64_hash_table_create | |
5461 | #define bfd_elf64_bfd_link_hash_table_free \ | |
5462 | elf64_ia64_hash_table_free | |
5463 | #define elf_backend_create_dynamic_sections \ | |
5464 | elf64_ia64_create_dynamic_sections | |
5465 | #define elf_backend_check_relocs \ | |
5466 | elf64_ia64_check_relocs | |
5467 | #define elf_backend_adjust_dynamic_symbol \ | |
5468 | elf64_ia64_adjust_dynamic_symbol | |
5469 | #define elf_backend_size_dynamic_sections \ | |
5470 | elf64_ia64_size_dynamic_sections | |
5471 | #define elf_backend_omit_section_dynsym \ | |
5472 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
5473 | #define elf_backend_relocate_section \ | |
5474 | elf64_ia64_relocate_section | |
5475 | #define elf_backend_finish_dynamic_symbol \ | |
5476 | elf64_ia64_finish_dynamic_symbol | |
5477 | #define elf_backend_finish_dynamic_sections \ | |
5478 | elf64_ia64_finish_dynamic_sections | |
5479 | #define bfd_elf64_bfd_final_link \ | |
5480 | elf64_ia64_final_link | |
5481 | ||
5482 | #define bfd_elf64_bfd_merge_private_bfd_data \ | |
5483 | elf64_ia64_merge_private_bfd_data | |
5484 | #define bfd_elf64_bfd_set_private_flags \ | |
5485 | elf64_ia64_set_private_flags | |
5486 | #define bfd_elf64_bfd_print_private_bfd_data \ | |
5487 | elf64_ia64_print_private_bfd_data | |
5488 | ||
5489 | #define elf_backend_plt_readonly 1 | |
5490 | #define elf_backend_want_plt_sym 0 | |
5491 | #define elf_backend_plt_alignment 5 | |
5492 | #define elf_backend_got_header_size 0 | |
5493 | #define elf_backend_want_got_plt 1 | |
5494 | #define elf_backend_may_use_rel_p 1 | |
5495 | #define elf_backend_may_use_rela_p 1 | |
5496 | #define elf_backend_default_use_rela_p 1 | |
5497 | #define elf_backend_want_dynbss 0 | |
5498 | #define elf_backend_hide_symbol elf64_ia64_hash_hide_symbol | |
5499 | #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol | |
5500 | #define elf_backend_reloc_type_class elf64_ia64_reloc_type_class | |
5501 | #define elf_backend_rela_normal 1 | |
5502 | #define elf_backend_special_sections elf64_ia64_special_sections | |
5503 | #define elf_backend_default_execstack 0 | |
5504 | ||
5505 | /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with | |
5506 | SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields. | |
5507 | We don't want to flood users with so many error messages. We turn | |
5508 | off the warning for now. It will be turned on later when the Intel | |
5509 | compiler is fixed. */ | |
5510 | #define elf_backend_link_order_error_handler NULL | |
5511 | ||
5512 | /* VMS-specific vectors. */ | |
5513 | ||
5514 | #undef TARGET_LITTLE_SYM | |
5515 | #define TARGET_LITTLE_SYM bfd_elf64_ia64_vms_vec | |
5516 | #undef TARGET_LITTLE_NAME | |
5517 | #define TARGET_LITTLE_NAME "elf64-ia64-vms" | |
5518 | #undef TARGET_BIG_SYM | |
5519 | #undef TARGET_BIG_NAME | |
5520 | ||
5521 | /* These are VMS specific functions. */ | |
5522 | ||
5523 | #undef elf_backend_object_p | |
5524 | #define elf_backend_object_p elf64_vms_object_p | |
5525 | ||
5526 | #undef elf_backend_section_from_shdr | |
5527 | #define elf_backend_section_from_shdr elf64_vms_section_from_shdr | |
5528 | ||
5529 | #undef elf_backend_post_process_headers | |
5530 | #define elf_backend_post_process_headers elf64_vms_post_process_headers | |
5531 | ||
5532 | #undef elf_backend_section_processing | |
5533 | #define elf_backend_section_processing elf64_vms_section_processing | |
5534 | ||
5535 | #undef elf_backend_final_write_processing | |
5536 | #define elf_backend_final_write_processing elf64_vms_final_write_processing | |
5537 | ||
5538 | #undef bfd_elf64_close_and_cleanup | |
5539 | #define bfd_elf64_close_and_cleanup elf64_vms_close_and_cleanup | |
5540 | ||
5541 | #undef elf_backend_section_from_bfd_section | |
5542 | ||
5543 | #undef elf_backend_symbol_processing | |
5544 | ||
5545 | #undef elf_backend_want_p_paddr_set_to_zero | |
5546 | ||
5547 | #undef ELF_OSABI | |
5548 | #define ELF_OSABI ELFOSABI_OPENVMS | |
5549 | ||
5550 | #undef ELF_MAXPAGESIZE | |
5551 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ | |
5552 | ||
5553 | #undef elf64_bed | |
5554 | #define elf64_bed elf64_ia64_vms_bed | |
5555 | ||
5556 | #define elf_backend_size_info elf64_ia64_vms_size_info | |
5557 | ||
5558 | /* Use VMS-style archives (in particular, don't use the standard coff | |
5559 | archive format). */ | |
5560 | #define bfd_elf64_archive_functions | |
5561 | ||
5562 | #undef bfd_elf64_archive_p | |
5563 | #define bfd_elf64_archive_p _bfd_vms_lib_ia64_archive_p | |
5564 | #undef bfd_elf64_write_archive_contents | |
5565 | #define bfd_elf64_write_archive_contents _bfd_vms_lib_write_archive_contents | |
5566 | #undef bfd_elf64_mkarchive | |
5567 | #define bfd_elf64_mkarchive _bfd_vms_lib_ia64_mkarchive | |
5568 | ||
5569 | #define bfd_elf64_archive_slurp_armap \ | |
5570 | _bfd_vms_lib_slurp_armap | |
5571 | #define bfd_elf64_archive_slurp_extended_name_table \ | |
5572 | _bfd_vms_lib_slurp_extended_name_table | |
5573 | #define bfd_elf64_archive_construct_extended_name_table \ | |
5574 | _bfd_vms_lib_construct_extended_name_table | |
5575 | #define bfd_elf64_archive_truncate_arname \ | |
5576 | _bfd_vms_lib_truncate_arname | |
5577 | #define bfd_elf64_archive_write_armap \ | |
5578 | _bfd_vms_lib_write_armap | |
5579 | #define bfd_elf64_archive_read_ar_hdr \ | |
5580 | _bfd_vms_lib_read_ar_hdr | |
5581 | #define bfd_elf64_archive_write_ar_hdr \ | |
5582 | _bfd_vms_lib_write_ar_hdr | |
5583 | #define bfd_elf64_archive_openr_next_archived_file \ | |
5584 | _bfd_vms_lib_openr_next_archived_file | |
5585 | #define bfd_elf64_archive_get_elt_at_index \ | |
5586 | _bfd_vms_lib_get_elt_at_index | |
5587 | #define bfd_elf64_archive_generic_stat_arch_elt \ | |
5588 | _bfd_vms_lib_generic_stat_arch_elt | |
5589 | #define bfd_elf64_archive_update_armap_timestamp \ | |
5590 | _bfd_vms_lib_update_armap_timestamp | |
5591 | ||
5592 | /* VMS link methods. */ | |
5593 | #undef bfd_elf64_bfd_link_add_symbols | |
5594 | #define bfd_elf64_bfd_link_add_symbols elf64_vms_bfd_link_add_symbols | |
5595 | ||
5596 | #undef elf_backend_want_got_sym | |
5597 | #define elf_backend_want_got_sym 0 | |
5598 | ||
5599 | #undef bfd_elf64_mkobject | |
5600 | #define bfd_elf64_mkobject elf64_ia64_vms_mkobject | |
5601 | ||
5602 | /* Redefine to align segments on block size. */ | |
5603 | #undef ELF_MAXPAGESIZE | |
5604 | #define ELF_MAXPAGESIZE 0x200 /* 512B */ | |
5605 | ||
5606 | #undef elf_backend_want_got_plt | |
5607 | #define elf_backend_want_got_plt 0 | |
5608 | ||
5609 | #include "elf64-target.h" |