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cbe79dfe | 1 | /* IA-64 support for 64-bit ELF |
82704155 | 2 | Copyright (C) 1998-2019 Free Software Foundation, Inc. |
cbe79dfe TG |
3 | Contributed by David Mosberger-Tang <davidm@hpl.hp.com> |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
21 | ||
22 | #include "sysdep.h" | |
23 | #include "bfd.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "opcode/ia64.h" | |
27 | #include "elf/ia64.h" | |
28 | #include "objalloc.h" | |
29 | #include "hashtab.h" | |
cbe79dfe TG |
30 | #include "elfxx-ia64.h" |
31 | ||
32 | #define ARCH_SIZE NN | |
33 | ||
34 | #if ARCH_SIZE == 64 | |
35 | #define LOG_SECTION_ALIGN 3 | |
36 | #endif | |
37 | ||
38 | #if ARCH_SIZE == 32 | |
39 | #define LOG_SECTION_ALIGN 2 | |
40 | #endif | |
41 | ||
cbe79dfe TG |
42 | typedef struct bfd_hash_entry *(*new_hash_entry_func) |
43 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); | |
44 | ||
45 | /* In dynamically (linker-) created sections, we generally need to keep track | |
46 | of the place a symbol or expression got allocated to. This is done via hash | |
47 | tables that store entries of the following type. */ | |
48 | ||
49 | struct elfNN_ia64_dyn_sym_info | |
50 | { | |
51 | /* The addend for which this entry is relevant. */ | |
52 | bfd_vma addend; | |
53 | ||
54 | bfd_vma got_offset; | |
55 | bfd_vma fptr_offset; | |
56 | bfd_vma pltoff_offset; | |
57 | bfd_vma plt_offset; | |
58 | bfd_vma plt2_offset; | |
59 | bfd_vma tprel_offset; | |
60 | bfd_vma dtpmod_offset; | |
61 | bfd_vma dtprel_offset; | |
62 | ||
63 | /* The symbol table entry, if any, that this was derived from. */ | |
64 | struct elf_link_hash_entry *h; | |
65 | ||
66 | /* Used to count non-got, non-plt relocations for delayed sizing | |
67 | of relocation sections. */ | |
68 | struct elfNN_ia64_dyn_reloc_entry | |
69 | { | |
70 | struct elfNN_ia64_dyn_reloc_entry *next; | |
71 | asection *srel; | |
72 | int type; | |
73 | int count; | |
74 | ||
75 | /* Is this reloc against readonly section? */ | |
76 | bfd_boolean reltext; | |
77 | } *reloc_entries; | |
78 | ||
79 | /* TRUE when the section contents have been updated. */ | |
80 | unsigned got_done : 1; | |
81 | unsigned fptr_done : 1; | |
82 | unsigned pltoff_done : 1; | |
83 | unsigned tprel_done : 1; | |
84 | unsigned dtpmod_done : 1; | |
85 | unsigned dtprel_done : 1; | |
86 | ||
87 | /* TRUE for the different kinds of linker data we want created. */ | |
88 | unsigned want_got : 1; | |
89 | unsigned want_gotx : 1; | |
90 | unsigned want_fptr : 1; | |
91 | unsigned want_ltoff_fptr : 1; | |
92 | unsigned want_plt : 1; | |
93 | unsigned want_plt2 : 1; | |
94 | unsigned want_pltoff : 1; | |
95 | unsigned want_tprel : 1; | |
96 | unsigned want_dtpmod : 1; | |
97 | unsigned want_dtprel : 1; | |
98 | }; | |
99 | ||
100 | struct elfNN_ia64_local_hash_entry | |
101 | { | |
102 | int id; | |
103 | unsigned int r_sym; | |
104 | /* The number of elements in elfNN_ia64_dyn_sym_info array. */ | |
105 | unsigned int count; | |
106 | /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ | |
107 | unsigned int sorted_count; | |
108 | /* The size of elfNN_ia64_dyn_sym_info array. */ | |
109 | unsigned int size; | |
110 | /* The array of elfNN_ia64_dyn_sym_info. */ | |
111 | struct elfNN_ia64_dyn_sym_info *info; | |
112 | ||
113 | /* TRUE if this hash entry's addends was translated for | |
114 | SHF_MERGE optimization. */ | |
115 | unsigned sec_merge_done : 1; | |
116 | }; | |
117 | ||
118 | struct elfNN_ia64_link_hash_entry | |
119 | { | |
120 | struct elf_link_hash_entry root; | |
121 | /* The number of elements in elfNN_ia64_dyn_sym_info array. */ | |
122 | unsigned int count; | |
123 | /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ | |
124 | unsigned int sorted_count; | |
125 | /* The size of elfNN_ia64_dyn_sym_info array. */ | |
126 | unsigned int size; | |
127 | /* The array of elfNN_ia64_dyn_sym_info. */ | |
128 | struct elfNN_ia64_dyn_sym_info *info; | |
129 | }; | |
130 | ||
131 | struct elfNN_ia64_link_hash_table | |
132 | { | |
133 | /* The main hash table. */ | |
134 | struct elf_link_hash_table root; | |
135 | ||
136 | asection *fptr_sec; /* Function descriptor table (or NULL). */ | |
137 | asection *rel_fptr_sec; /* Dynamic relocation section for same. */ | |
138 | asection *pltoff_sec; /* Private descriptors for plt (or NULL). */ | |
139 | asection *rel_pltoff_sec; /* Dynamic relocation section for same. */ | |
140 | ||
141 | bfd_size_type minplt_entries; /* Number of minplt entries. */ | |
142 | unsigned reltext : 1; /* Are there relocs against readonly sections? */ | |
143 | unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */ | |
144 | bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */ | |
145 | /* There are maybe R_IA64_GPREL22 relocations, including those | |
146 | optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT | |
147 | sections. We need to record those sections so that we can choose | |
148 | a proper GP to cover all R_IA64_GPREL22 relocations. */ | |
149 | asection *max_short_sec; /* Maximum short output section. */ | |
150 | bfd_vma max_short_offset; /* Maximum short offset. */ | |
151 | asection *min_short_sec; /* Minimum short output section. */ | |
152 | bfd_vma min_short_offset; /* Minimum short offset. */ | |
153 | ||
154 | htab_t loc_hash_table; | |
155 | void *loc_hash_memory; | |
156 | }; | |
157 | ||
158 | struct elfNN_ia64_allocate_data | |
159 | { | |
160 | struct bfd_link_info *info; | |
161 | bfd_size_type ofs; | |
162 | bfd_boolean only_got; | |
163 | }; | |
164 | ||
165 | #define elfNN_ia64_hash_table(p) \ | |
166 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
167 | == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL) | |
168 | ||
169 | static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info | |
170 | (struct elfNN_ia64_link_hash_table *ia64_info, | |
171 | struct elf_link_hash_entry *h, | |
172 | bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create); | |
173 | static bfd_boolean elfNN_ia64_dynamic_symbol_p | |
174 | (struct elf_link_hash_entry *h, struct bfd_link_info *info, int); | |
175 | static bfd_boolean elfNN_ia64_choose_gp | |
176 | (bfd *abfd, struct bfd_link_info *info, bfd_boolean final); | |
177 | static void elfNN_ia64_dyn_sym_traverse | |
178 | (struct elfNN_ia64_link_hash_table *ia64_info, | |
2c3fc389 NC |
179 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *), |
180 | void * info); | |
cbe79dfe | 181 | static bfd_boolean allocate_global_data_got |
2c3fc389 | 182 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe | 183 | static bfd_boolean allocate_global_fptr_got |
2c3fc389 | 184 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe | 185 | static bfd_boolean allocate_local_got |
2c3fc389 | 186 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe TG |
187 | static bfd_boolean elfNN_ia64_hpux_vec |
188 | (const bfd_target *vec); | |
189 | static bfd_boolean allocate_dynrel_entries | |
2c3fc389 | 190 | (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); |
cbe79dfe TG |
191 | static asection *get_pltoff |
192 | (bfd *abfd, struct bfd_link_info *info, | |
193 | struct elfNN_ia64_link_hash_table *ia64_info); | |
194 | \f | |
195 | /* ia64-specific relocation. */ | |
196 | ||
197 | /* Given a ELF reloc, return the matching HOWTO structure. */ | |
198 | ||
f3185997 | 199 | static bfd_boolean |
cbe79dfe TG |
200 | elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
201 | arelent *bfd_reloc, | |
202 | Elf_Internal_Rela *elf_reloc) | |
203 | { | |
f3185997 NC |
204 | unsigned int r_type = ELF32_R_TYPE (elf_reloc->r_info); |
205 | ||
206 | bfd_reloc->howto = ia64_elf_lookup_howto (r_type); | |
207 | if (bfd_reloc->howto == NULL) | |
208 | { | |
209 | /* xgettext:c-format */ | |
210 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
211 | abfd, r_type); | |
212 | bfd_set_error (bfd_error_bad_value); | |
213 | return FALSE; | |
214 | } | |
215 | ||
216 | return TRUE; | |
cbe79dfe TG |
217 | } |
218 | \f | |
219 | #define PLT_HEADER_SIZE (3 * 16) | |
220 | #define PLT_MIN_ENTRY_SIZE (1 * 16) | |
221 | #define PLT_FULL_ENTRY_SIZE (2 * 16) | |
222 | #define PLT_RESERVED_WORDS 3 | |
223 | ||
224 | static const bfd_byte plt_header[PLT_HEADER_SIZE] = | |
225 | { | |
07d6d2b8 AM |
226 | 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */ |
227 | 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */ | |
228 | 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ | |
229 | 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */ | |
230 | 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */ | |
231 | 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ | |
232 | 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */ | |
233 | 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */ | |
234 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ | |
cbe79dfe TG |
235 | }; |
236 | ||
237 | static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] = | |
238 | { | |
07d6d2b8 AM |
239 | 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */ |
240 | 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */ | |
241 | 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */ | |
cbe79dfe TG |
242 | }; |
243 | ||
244 | static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] = | |
245 | { | |
07d6d2b8 AM |
246 | 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */ |
247 | 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/ | |
248 | 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */ | |
249 | 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */ | |
250 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ | |
251 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ | |
cbe79dfe TG |
252 | }; |
253 | ||
254 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
255 | ||
256 | static const bfd_byte oor_brl[16] = | |
257 | { | |
07d6d2b8 AM |
258 | 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ |
259 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */ | |
cbe79dfe TG |
260 | 0x00, 0x00, 0x00, 0xc0 |
261 | }; | |
262 | ||
263 | static const bfd_byte oor_ip[48] = | |
264 | { | |
07d6d2b8 AM |
265 | 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ |
266 | 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */ | |
cbe79dfe | 267 | 0x01, 0x00, 0x00, 0x60, |
07d6d2b8 AM |
268 | 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */ |
269 | 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */ | |
270 | 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */ | |
271 | 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */ | |
272 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ | |
273 | 0x60, 0x00, 0x80, 0x00 /* br b6;; */ | |
cbe79dfe TG |
274 | }; |
275 | ||
276 | static size_t oor_branch_size = sizeof (oor_brl); | |
277 | ||
278 | void | |
279 | bfd_elfNN_ia64_after_parse (int itanium) | |
280 | { | |
281 | oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl); | |
282 | } | |
283 | \f | |
284 | ||
285 | /* Rename some of the generic section flags to better document how they | |
286 | are used here. */ | |
287 | #define skip_relax_pass_0 sec_flg0 | |
288 | #define skip_relax_pass_1 sec_flg1 | |
289 | ||
290 | /* These functions do relaxation for IA-64 ELF. */ | |
291 | ||
292 | static void | |
293 | elfNN_ia64_update_short_info (asection *sec, bfd_vma offset, | |
294 | struct elfNN_ia64_link_hash_table *ia64_info) | |
295 | { | |
296 | /* Skip ABS and SHF_IA_64_SHORT sections. */ | |
297 | if (sec == bfd_abs_section_ptr | |
298 | || (sec->flags & SEC_SMALL_DATA) != 0) | |
299 | return; | |
300 | ||
301 | if (!ia64_info->min_short_sec) | |
302 | { | |
303 | ia64_info->max_short_sec = sec; | |
304 | ia64_info->max_short_offset = offset; | |
305 | ia64_info->min_short_sec = sec; | |
306 | ia64_info->min_short_offset = offset; | |
307 | } | |
308 | else if (sec == ia64_info->max_short_sec | |
309 | && offset > ia64_info->max_short_offset) | |
310 | ia64_info->max_short_offset = offset; | |
311 | else if (sec == ia64_info->min_short_sec | |
312 | && offset < ia64_info->min_short_offset) | |
313 | ia64_info->min_short_offset = offset; | |
314 | else if (sec->output_section->vma | |
315 | > ia64_info->max_short_sec->vma) | |
316 | { | |
317 | ia64_info->max_short_sec = sec; | |
318 | ia64_info->max_short_offset = offset; | |
319 | } | |
320 | else if (sec->output_section->vma | |
321 | < ia64_info->min_short_sec->vma) | |
322 | { | |
323 | ia64_info->min_short_sec = sec; | |
324 | ia64_info->min_short_offset = offset; | |
325 | } | |
326 | } | |
327 | ||
328 | static bfd_boolean | |
329 | elfNN_ia64_relax_section (bfd *abfd, asection *sec, | |
330 | struct bfd_link_info *link_info, | |
331 | bfd_boolean *again) | |
332 | { | |
333 | struct one_fixup | |
334 | { | |
335 | struct one_fixup *next; | |
336 | asection *tsec; | |
337 | bfd_vma toff; | |
338 | bfd_vma trampoff; | |
339 | }; | |
340 | ||
341 | Elf_Internal_Shdr *symtab_hdr; | |
342 | Elf_Internal_Rela *internal_relocs; | |
343 | Elf_Internal_Rela *irel, *irelend; | |
344 | bfd_byte *contents; | |
345 | Elf_Internal_Sym *isymbuf = NULL; | |
346 | struct elfNN_ia64_link_hash_table *ia64_info; | |
347 | struct one_fixup *fixups = NULL; | |
348 | bfd_boolean changed_contents = FALSE; | |
349 | bfd_boolean changed_relocs = FALSE; | |
350 | bfd_boolean changed_got = FALSE; | |
351 | bfd_boolean skip_relax_pass_0 = TRUE; | |
352 | bfd_boolean skip_relax_pass_1 = TRUE; | |
353 | bfd_vma gp = 0; | |
354 | ||
355 | /* Assume we're not going to change any sizes, and we'll only need | |
356 | one pass. */ | |
357 | *again = FALSE; | |
358 | ||
0e1862bb | 359 | if (bfd_link_relocatable (link_info)) |
cbe79dfe TG |
360 | (*link_info->callbacks->einfo) |
361 | (_("%P%F: --relax and -r may not be used together\n")); | |
362 | ||
363 | /* Don't even try to relax for non-ELF outputs. */ | |
364 | if (!is_elf_hash_table (link_info->hash)) | |
365 | return FALSE; | |
366 | ||
367 | /* Nothing to do if there are no relocations or there is no need for | |
368 | the current pass. */ | |
369 | if ((sec->flags & SEC_RELOC) == 0 | |
370 | || sec->reloc_count == 0 | |
371 | || (link_info->relax_pass == 0 && sec->skip_relax_pass_0) | |
372 | || (link_info->relax_pass == 1 && sec->skip_relax_pass_1)) | |
373 | return TRUE; | |
374 | ||
375 | ia64_info = elfNN_ia64_hash_table (link_info); | |
376 | if (ia64_info == NULL) | |
377 | return FALSE; | |
378 | ||
379 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
380 | ||
381 | /* Load the relocations for this section. */ | |
382 | internal_relocs = (_bfd_elf_link_read_relocs | |
383 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, | |
384 | link_info->keep_memory)); | |
385 | if (internal_relocs == NULL) | |
386 | return FALSE; | |
387 | ||
388 | irelend = internal_relocs + sec->reloc_count; | |
389 | ||
390 | /* Get the section contents. */ | |
391 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
392 | contents = elf_section_data (sec)->this_hdr.contents; | |
393 | else | |
394 | { | |
395 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
396 | goto error_return; | |
397 | } | |
398 | ||
399 | for (irel = internal_relocs; irel < irelend; irel++) | |
400 | { | |
401 | unsigned long r_type = ELFNN_R_TYPE (irel->r_info); | |
402 | bfd_vma symaddr, reladdr, trampoff, toff, roff; | |
403 | asection *tsec; | |
404 | struct one_fixup *f; | |
405 | bfd_size_type amt; | |
406 | bfd_boolean is_branch; | |
407 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
408 | char symtype; | |
409 | ||
410 | switch (r_type) | |
411 | { | |
412 | case R_IA64_PCREL21B: | |
413 | case R_IA64_PCREL21BI: | |
414 | case R_IA64_PCREL21M: | |
415 | case R_IA64_PCREL21F: | |
416 | /* In pass 1, all br relaxations are done. We can skip it. */ | |
417 | if (link_info->relax_pass == 1) | |
418 | continue; | |
419 | skip_relax_pass_0 = FALSE; | |
420 | is_branch = TRUE; | |
421 | break; | |
422 | ||
423 | case R_IA64_PCREL60B: | |
424 | /* We can't optimize brl to br in pass 0 since br relaxations | |
425 | will increase the code size. Defer it to pass 1. */ | |
426 | if (link_info->relax_pass == 0) | |
427 | { | |
428 | skip_relax_pass_1 = FALSE; | |
429 | continue; | |
430 | } | |
431 | is_branch = TRUE; | |
432 | break; | |
433 | ||
434 | case R_IA64_GPREL22: | |
435 | /* Update max_short_sec/min_short_sec. */ | |
436 | ||
437 | case R_IA64_LTOFF22X: | |
438 | case R_IA64_LDXMOV: | |
439 | /* We can't relax ldx/mov in pass 0 since br relaxations will | |
440 | increase the code size. Defer it to pass 1. */ | |
441 | if (link_info->relax_pass == 0) | |
442 | { | |
443 | skip_relax_pass_1 = FALSE; | |
444 | continue; | |
445 | } | |
446 | is_branch = FALSE; | |
447 | break; | |
448 | ||
449 | default: | |
450 | continue; | |
451 | } | |
452 | ||
453 | /* Get the value of the symbol referred to by the reloc. */ | |
454 | if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
455 | { | |
456 | /* A local symbol. */ | |
457 | Elf_Internal_Sym *isym; | |
458 | ||
459 | /* Read this BFD's local symbols. */ | |
460 | if (isymbuf == NULL) | |
461 | { | |
462 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
463 | if (isymbuf == NULL) | |
464 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
465 | symtab_hdr->sh_info, 0, | |
466 | NULL, NULL, NULL); | |
467 | if (isymbuf == 0) | |
468 | goto error_return; | |
469 | } | |
470 | ||
471 | isym = isymbuf + ELFNN_R_SYM (irel->r_info); | |
472 | if (isym->st_shndx == SHN_UNDEF) | |
473 | continue; /* We can't do anything with undefined symbols. */ | |
474 | else if (isym->st_shndx == SHN_ABS) | |
475 | tsec = bfd_abs_section_ptr; | |
476 | else if (isym->st_shndx == SHN_COMMON) | |
477 | tsec = bfd_com_section_ptr; | |
478 | else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON) | |
479 | tsec = bfd_com_section_ptr; | |
480 | else | |
481 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
482 | ||
483 | toff = isym->st_value; | |
484 | dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE); | |
485 | symtype = ELF_ST_TYPE (isym->st_info); | |
486 | } | |
487 | else | |
488 | { | |
489 | unsigned long indx; | |
490 | struct elf_link_hash_entry *h; | |
491 | ||
492 | indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
493 | h = elf_sym_hashes (abfd)[indx]; | |
494 | BFD_ASSERT (h != NULL); | |
495 | ||
496 | while (h->root.type == bfd_link_hash_indirect | |
497 | || h->root.type == bfd_link_hash_warning) | |
498 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
499 | ||
500 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE); | |
501 | ||
502 | /* For branches to dynamic symbols, we're interested instead | |
503 | in a branch to the PLT entry. */ | |
504 | if (is_branch && dyn_i && dyn_i->want_plt2) | |
505 | { | |
506 | /* Internal branches shouldn't be sent to the PLT. | |
507 | Leave this for now and we'll give an error later. */ | |
508 | if (r_type != R_IA64_PCREL21B) | |
509 | continue; | |
510 | ||
511 | tsec = ia64_info->root.splt; | |
512 | toff = dyn_i->plt2_offset; | |
513 | BFD_ASSERT (irel->r_addend == 0); | |
514 | } | |
515 | ||
516 | /* Can't do anything else with dynamic symbols. */ | |
517 | else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type)) | |
518 | continue; | |
519 | ||
520 | else | |
521 | { | |
522 | /* We can't do anything with undefined symbols. */ | |
523 | if (h->root.type == bfd_link_hash_undefined | |
524 | || h->root.type == bfd_link_hash_undefweak) | |
525 | continue; | |
526 | ||
527 | tsec = h->root.u.def.section; | |
528 | toff = h->root.u.def.value; | |
529 | } | |
530 | ||
531 | symtype = h->type; | |
532 | } | |
533 | ||
dbaa2011 | 534 | if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE) |
cbe79dfe TG |
535 | { |
536 | /* At this stage in linking, no SEC_MERGE symbol has been | |
537 | adjusted, so all references to such symbols need to be | |
538 | passed through _bfd_merged_section_offset. (Later, in | |
539 | relocate_section, all SEC_MERGE symbols *except* for | |
540 | section symbols have been adjusted.) | |
541 | ||
542 | gas may reduce relocations against symbols in SEC_MERGE | |
543 | sections to a relocation against the section symbol when | |
544 | the original addend was zero. When the reloc is against | |
545 | a section symbol we should include the addend in the | |
546 | offset passed to _bfd_merged_section_offset, since the | |
547 | location of interest is the original symbol. On the | |
548 | other hand, an access to "sym+addend" where "sym" is not | |
549 | a section symbol should not include the addend; Such an | |
550 | access is presumed to be an offset from "sym"; The | |
551 | location of interest is just "sym". */ | |
552 | if (symtype == STT_SECTION) | |
553 | toff += irel->r_addend; | |
554 | ||
555 | toff = _bfd_merged_section_offset (abfd, &tsec, | |
556 | elf_section_data (tsec)->sec_info, | |
557 | toff); | |
558 | ||
559 | if (symtype != STT_SECTION) | |
560 | toff += irel->r_addend; | |
561 | } | |
562 | else | |
563 | toff += irel->r_addend; | |
564 | ||
565 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; | |
566 | ||
567 | roff = irel->r_offset; | |
568 | ||
569 | if (is_branch) | |
570 | { | |
571 | bfd_signed_vma offset; | |
572 | ||
573 | reladdr = (sec->output_section->vma | |
574 | + sec->output_offset | |
575 | + roff) & (bfd_vma) -4; | |
576 | ||
577 | /* The .plt section is aligned at 32byte and the .text section | |
578 | is aligned at 64byte. The .text section is right after the | |
579 | .plt section. After the first relaxation pass, linker may | |
580 | increase the gap between the .plt and .text sections up | |
581 | to 32byte. We assume linker will always insert 32byte | |
a8685210 | 582 | between the .plt and .text sections after the first |
cbe79dfe TG |
583 | relaxation pass. */ |
584 | if (tsec == ia64_info->root.splt) | |
585 | offset = -0x1000000 + 32; | |
586 | else | |
587 | offset = -0x1000000; | |
588 | ||
589 | /* If the branch is in range, no need to do anything. */ | |
d17fe7b7 | 590 | if ((bfd_signed_vma) (symaddr - reladdr) >= offset |
cbe79dfe TG |
591 | && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0) |
592 | { | |
593 | /* If the 60-bit branch is in 21-bit range, optimize it. */ | |
594 | if (r_type == R_IA64_PCREL60B) | |
595 | { | |
596 | ia64_elf_relax_brl (contents, roff); | |
597 | ||
598 | irel->r_info | |
599 | = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
600 | R_IA64_PCREL21B); | |
601 | ||
602 | /* If the original relocation offset points to slot | |
603 | 1, change it to slot 2. */ | |
604 | if ((irel->r_offset & 3) == 1) | |
605 | irel->r_offset += 1; | |
6f6372fa JW |
606 | |
607 | changed_contents = TRUE; | |
608 | changed_relocs = TRUE; | |
cbe79dfe TG |
609 | } |
610 | ||
611 | continue; | |
612 | } | |
613 | else if (r_type == R_IA64_PCREL60B) | |
614 | continue; | |
615 | else if (ia64_elf_relax_br (contents, roff)) | |
616 | { | |
617 | irel->r_info | |
618 | = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
619 | R_IA64_PCREL60B); | |
620 | ||
621 | /* Make the relocation offset point to slot 1. */ | |
622 | irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1; | |
6f6372fa JW |
623 | |
624 | changed_contents = TRUE; | |
625 | changed_relocs = TRUE; | |
cbe79dfe TG |
626 | continue; |
627 | } | |
628 | ||
629 | /* We can't put a trampoline in a .init/.fini section. Issue | |
630 | an error. */ | |
631 | if (strcmp (sec->output_section->name, ".init") == 0 | |
632 | || strcmp (sec->output_section->name, ".fini") == 0) | |
633 | { | |
4eca0228 | 634 | _bfd_error_handler |
695344c0 | 635 | /* xgettext:c-format */ |
38f14ab8 AM |
636 | (_("%pB: can't relax br at %#" PRIx64 " in section `%pA';" |
637 | " please use brl or indirect branch"), | |
2dcf00ce | 638 | sec->owner, (uint64_t) roff, sec); |
cbe79dfe TG |
639 | bfd_set_error (bfd_error_bad_value); |
640 | goto error_return; | |
641 | } | |
642 | ||
643 | /* If the branch and target are in the same section, you've | |
644 | got one honking big section and we can't help you unless | |
645 | you are branching backwards. You'll get an error message | |
646 | later. */ | |
647 | if (tsec == sec && toff > roff) | |
648 | continue; | |
649 | ||
650 | /* Look for an existing fixup to this address. */ | |
651 | for (f = fixups; f ; f = f->next) | |
652 | if (f->tsec == tsec && f->toff == toff) | |
653 | break; | |
654 | ||
655 | if (f == NULL) | |
656 | { | |
657 | /* Two alternatives: If it's a branch to a PLT entry, we can | |
658 | make a copy of the FULL_PLT entry. Otherwise, we'll have | |
659 | to use a `brl' insn to get where we're going. */ | |
660 | ||
661 | size_t size; | |
662 | ||
663 | if (tsec == ia64_info->root.splt) | |
664 | size = sizeof (plt_full_entry); | |
665 | else | |
666 | size = oor_branch_size; | |
667 | ||
668 | /* Resize the current section to make room for the new branch. */ | |
669 | trampoff = (sec->size + 15) & (bfd_vma) -16; | |
670 | ||
671 | /* If trampoline is out of range, there is nothing we | |
672 | can do. */ | |
673 | offset = trampoff - (roff & (bfd_vma) -4); | |
674 | if (offset < -0x1000000 || offset > 0x0FFFFF0) | |
675 | continue; | |
676 | ||
677 | amt = trampoff + size; | |
678 | contents = (bfd_byte *) bfd_realloc (contents, amt); | |
679 | if (contents == NULL) | |
680 | goto error_return; | |
681 | sec->size = amt; | |
682 | ||
683 | if (tsec == ia64_info->root.splt) | |
684 | { | |
685 | memcpy (contents + trampoff, plt_full_entry, size); | |
686 | ||
687 | /* Hijack the old relocation for use as the PLTOFF reloc. */ | |
688 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
689 | R_IA64_PLTOFF22); | |
690 | irel->r_offset = trampoff; | |
691 | } | |
692 | else | |
693 | { | |
694 | if (size == sizeof (oor_ip)) | |
695 | { | |
696 | memcpy (contents + trampoff, oor_ip, size); | |
697 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
698 | R_IA64_PCREL64I); | |
699 | irel->r_addend -= 16; | |
700 | irel->r_offset = trampoff + 2; | |
701 | } | |
702 | else | |
703 | { | |
704 | memcpy (contents + trampoff, oor_brl, size); | |
705 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
706 | R_IA64_PCREL60B); | |
707 | irel->r_offset = trampoff + 2; | |
708 | } | |
709 | ||
710 | } | |
711 | ||
712 | /* Record the fixup so we don't do it again this section. */ | |
713 | f = (struct one_fixup *) | |
714 | bfd_malloc ((bfd_size_type) sizeof (*f)); | |
715 | f->next = fixups; | |
716 | f->tsec = tsec; | |
717 | f->toff = toff; | |
718 | f->trampoff = trampoff; | |
719 | fixups = f; | |
720 | } | |
721 | else | |
722 | { | |
723 | /* If trampoline is out of range, there is nothing we | |
724 | can do. */ | |
725 | offset = f->trampoff - (roff & (bfd_vma) -4); | |
726 | if (offset < -0x1000000 || offset > 0x0FFFFF0) | |
727 | continue; | |
728 | ||
729 | /* Nop out the reloc, since we're finalizing things here. */ | |
730 | irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
731 | } | |
732 | ||
733 | /* Fix up the existing branch to hit the trampoline. */ | |
734 | if (ia64_elf_install_value (contents + roff, offset, r_type) | |
735 | != bfd_reloc_ok) | |
736 | goto error_return; | |
737 | ||
738 | changed_contents = TRUE; | |
739 | changed_relocs = TRUE; | |
740 | } | |
741 | else | |
742 | { | |
743 | /* Fetch the gp. */ | |
744 | if (gp == 0) | |
745 | { | |
746 | bfd *obfd = sec->output_section->owner; | |
747 | gp = _bfd_get_gp_value (obfd); | |
748 | if (gp == 0) | |
749 | { | |
750 | if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE)) | |
751 | goto error_return; | |
752 | gp = _bfd_get_gp_value (obfd); | |
753 | } | |
754 | } | |
755 | ||
756 | /* If the data is out of range, do nothing. */ | |
757 | if ((bfd_signed_vma) (symaddr - gp) >= 0x200000 | |
758 | ||(bfd_signed_vma) (symaddr - gp) < -0x200000) | |
759 | continue; | |
760 | ||
761 | if (r_type == R_IA64_GPREL22) | |
762 | elfNN_ia64_update_short_info (tsec->output_section, | |
763 | tsec->output_offset + toff, | |
764 | ia64_info); | |
765 | else if (r_type == R_IA64_LTOFF22X) | |
766 | { | |
767 | irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), | |
768 | R_IA64_GPREL22); | |
769 | changed_relocs = TRUE; | |
770 | if (dyn_i->want_gotx) | |
771 | { | |
772 | dyn_i->want_gotx = 0; | |
773 | changed_got |= !dyn_i->want_got; | |
774 | } | |
775 | ||
776 | elfNN_ia64_update_short_info (tsec->output_section, | |
777 | tsec->output_offset + toff, | |
778 | ia64_info); | |
779 | } | |
780 | else | |
781 | { | |
782 | ia64_elf_relax_ldxmov (contents, roff); | |
783 | irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
784 | changed_contents = TRUE; | |
785 | changed_relocs = TRUE; | |
786 | } | |
787 | } | |
788 | } | |
789 | ||
790 | /* ??? If we created fixups, this may push the code segment large | |
791 | enough that the data segment moves, which will change the GP. | |
792 | Reset the GP so that we re-calculate next round. We need to | |
793 | do this at the _beginning_ of the next round; now will not do. */ | |
794 | ||
795 | /* Clean up and go home. */ | |
796 | while (fixups) | |
797 | { | |
798 | struct one_fixup *f = fixups; | |
799 | fixups = fixups->next; | |
800 | free (f); | |
801 | } | |
802 | ||
803 | if (isymbuf != NULL | |
804 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
805 | { | |
806 | if (! link_info->keep_memory) | |
807 | free (isymbuf); | |
808 | else | |
809 | { | |
810 | /* Cache the symbols for elf_link_input_bfd. */ | |
811 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
812 | } | |
813 | } | |
814 | ||
815 | if (contents != NULL | |
816 | && elf_section_data (sec)->this_hdr.contents != contents) | |
817 | { | |
818 | if (!changed_contents && !link_info->keep_memory) | |
819 | free (contents); | |
820 | else | |
821 | { | |
822 | /* Cache the section contents for elf_link_input_bfd. */ | |
823 | elf_section_data (sec)->this_hdr.contents = contents; | |
824 | } | |
825 | } | |
826 | ||
827 | if (elf_section_data (sec)->relocs != internal_relocs) | |
828 | { | |
829 | if (!changed_relocs) | |
830 | free (internal_relocs); | |
831 | else | |
832 | elf_section_data (sec)->relocs = internal_relocs; | |
833 | } | |
834 | ||
835 | if (changed_got) | |
836 | { | |
837 | struct elfNN_ia64_allocate_data data; | |
838 | data.info = link_info; | |
839 | data.ofs = 0; | |
840 | ia64_info->self_dtpmod_offset = (bfd_vma) -1; | |
841 | ||
842 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); | |
843 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); | |
844 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); | |
845 | ia64_info->root.sgot->size = data.ofs; | |
846 | ||
847 | if (ia64_info->root.dynamic_sections_created | |
848 | && ia64_info->root.srelgot != NULL) | |
849 | { | |
850 | /* Resize .rela.got. */ | |
851 | ia64_info->root.srelgot->size = 0; | |
0e1862bb | 852 | if (bfd_link_pic (link_info) |
cbe79dfe TG |
853 | && ia64_info->self_dtpmod_offset != (bfd_vma) -1) |
854 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
855 | data.only_got = TRUE; | |
856 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, | |
857 | &data); | |
858 | } | |
859 | } | |
860 | ||
861 | if (link_info->relax_pass == 0) | |
862 | { | |
863 | /* Pass 0 is only needed to relax br. */ | |
864 | sec->skip_relax_pass_0 = skip_relax_pass_0; | |
865 | sec->skip_relax_pass_1 = skip_relax_pass_1; | |
866 | } | |
867 | ||
868 | *again = changed_contents || changed_relocs; | |
869 | return TRUE; | |
870 | ||
871 | error_return: | |
872 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) | |
873 | free (isymbuf); | |
874 | if (contents != NULL | |
875 | && elf_section_data (sec)->this_hdr.contents != contents) | |
876 | free (contents); | |
877 | if (internal_relocs != NULL | |
878 | && elf_section_data (sec)->relocs != internal_relocs) | |
879 | free (internal_relocs); | |
880 | return FALSE; | |
881 | } | |
882 | #undef skip_relax_pass_0 | |
883 | #undef skip_relax_pass_1 | |
884 | \f | |
885 | /* Return TRUE if NAME is an unwind table section name. */ | |
886 | ||
887 | static inline bfd_boolean | |
888 | is_unwind_section_name (bfd *abfd, const char *name) | |
889 | { | |
890 | if (elfNN_ia64_hpux_vec (abfd->xvec) | |
891 | && !strcmp (name, ELF_STRING_ia64_unwind_hdr)) | |
892 | return FALSE; | |
893 | ||
894 | return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind) | |
895 | && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info)) | |
896 | || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once)); | |
897 | } | |
898 | ||
899 | /* Handle an IA-64 specific section when reading an object file. This | |
900 | is called when bfd_section_from_shdr finds a section with an unknown | |
901 | type. */ | |
902 | ||
903 | static bfd_boolean | |
904 | elfNN_ia64_section_from_shdr (bfd *abfd, | |
905 | Elf_Internal_Shdr *hdr, | |
906 | const char *name, | |
907 | int shindex) | |
908 | { | |
909 | /* There ought to be a place to keep ELF backend specific flags, but | |
910 | at the moment there isn't one. We just keep track of the | |
911 | sections by their name, instead. Fortunately, the ABI gives | |
912 | suggested names for all the MIPS specific sections, so we will | |
913 | probably get away with this. */ | |
914 | switch (hdr->sh_type) | |
915 | { | |
916 | case SHT_IA_64_UNWIND: | |
917 | case SHT_IA_64_HP_OPT_ANOT: | |
918 | break; | |
919 | ||
920 | case SHT_IA_64_EXT: | |
921 | if (strcmp (name, ELF_STRING_ia64_archext) != 0) | |
922 | return FALSE; | |
923 | break; | |
924 | ||
925 | default: | |
926 | return FALSE; | |
927 | } | |
928 | ||
929 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
930 | return FALSE; | |
931 | ||
932 | return TRUE; | |
933 | } | |
934 | ||
935 | /* Convert IA-64 specific section flags to bfd internal section flags. */ | |
936 | ||
937 | /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV | |
938 | flag. */ | |
939 | ||
940 | static bfd_boolean | |
941 | elfNN_ia64_section_flags (flagword *flags, | |
942 | const Elf_Internal_Shdr *hdr) | |
943 | { | |
944 | if (hdr->sh_flags & SHF_IA_64_SHORT) | |
945 | *flags |= SEC_SMALL_DATA; | |
946 | ||
947 | return TRUE; | |
948 | } | |
949 | ||
950 | /* Set the correct type for an IA-64 ELF section. We do this by the | |
951 | section name, which is a hack, but ought to work. */ | |
952 | ||
953 | static bfd_boolean | |
954 | elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, | |
955 | asection *sec) | |
956 | { | |
957 | const char *name; | |
958 | ||
959 | name = bfd_get_section_name (abfd, sec); | |
960 | ||
961 | if (is_unwind_section_name (abfd, name)) | |
962 | { | |
963 | /* We don't have the sections numbered at this point, so sh_info | |
964 | is set later, in elfNN_ia64_final_write_processing. */ | |
965 | hdr->sh_type = SHT_IA_64_UNWIND; | |
966 | hdr->sh_flags |= SHF_LINK_ORDER; | |
967 | } | |
968 | else if (strcmp (name, ELF_STRING_ia64_archext) == 0) | |
969 | hdr->sh_type = SHT_IA_64_EXT; | |
970 | else if (strcmp (name, ".HP.opt_annot") == 0) | |
971 | hdr->sh_type = SHT_IA_64_HP_OPT_ANOT; | |
972 | else if (strcmp (name, ".reloc") == 0) | |
973 | /* This is an ugly, but unfortunately necessary hack that is | |
974 | needed when producing EFI binaries on IA-64. It tells | |
975 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
976 | containing ELF relocation info. We need this hack in order to | |
977 | be able to generate ELF binaries that can be translated into | |
978 | EFI applications (which are essentially COFF objects). Those | |
979 | files contain a COFF ".reloc" section inside an ELFNN object, | |
980 | which would normally cause BFD to segfault because it would | |
981 | attempt to interpret this section as containing relocation | |
982 | entries for section "oc". With this hack enabled, ".reloc" | |
983 | will be treated as a normal data section, which will avoid the | |
984 | segfault. However, you won't be able to create an ELFNN binary | |
985 | with a section named "oc" that needs relocations, but that's | |
986 | the kind of ugly side-effects you get when detecting section | |
987 | types based on their names... In practice, this limitation is | |
988 | unlikely to bite. */ | |
989 | hdr->sh_type = SHT_PROGBITS; | |
990 | ||
991 | if (sec->flags & SEC_SMALL_DATA) | |
992 | hdr->sh_flags |= SHF_IA_64_SHORT; | |
993 | ||
994 | /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */ | |
995 | ||
996 | if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS)) | |
997 | hdr->sh_flags |= SHF_IA_64_HP_TLS; | |
998 | ||
999 | return TRUE; | |
1000 | } | |
1001 | ||
1002 | /* The final processing done just before writing out an IA-64 ELF | |
1003 | object file. */ | |
1004 | ||
1005 | static void | |
1006 | elfNN_ia64_final_write_processing (bfd *abfd, | |
1007 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
1008 | { | |
1009 | Elf_Internal_Shdr *hdr; | |
1010 | asection *s; | |
1011 | ||
1012 | for (s = abfd->sections; s; s = s->next) | |
1013 | { | |
1014 | hdr = &elf_section_data (s)->this_hdr; | |
1015 | switch (hdr->sh_type) | |
1016 | { | |
1017 | case SHT_IA_64_UNWIND: | |
1018 | /* The IA-64 processor-specific ABI requires setting sh_link | |
1019 | to the unwind section, whereas HP-UX requires sh_info to | |
1020 | do so. For maximum compatibility, we'll set both for | |
1021 | now... */ | |
1022 | hdr->sh_info = hdr->sh_link; | |
1023 | break; | |
1024 | } | |
1025 | } | |
1026 | ||
1027 | if (! elf_flags_init (abfd)) | |
1028 | { | |
1029 | unsigned long flags = 0; | |
1030 | ||
1031 | if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) | |
1032 | flags |= EF_IA_64_BE; | |
1033 | if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) | |
1034 | flags |= EF_IA_64_ABI64; | |
1035 | ||
1036 | elf_elfheader(abfd)->e_flags = flags; | |
1037 | elf_flags_init (abfd) = TRUE; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | /* Hook called by the linker routine which adds symbols from an object | |
1042 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1043 | ||
1044 | static bfd_boolean | |
1045 | elfNN_ia64_add_symbol_hook (bfd *abfd, | |
1046 | struct bfd_link_info *info, | |
1047 | Elf_Internal_Sym *sym, | |
1048 | const char **namep ATTRIBUTE_UNUSED, | |
1049 | flagword *flagsp ATTRIBUTE_UNUSED, | |
1050 | asection **secp, | |
1051 | bfd_vma *valp) | |
1052 | { | |
1053 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 1054 | && !bfd_link_relocatable (info) |
cbe79dfe TG |
1055 | && sym->st_size <= elf_gp_size (abfd)) |
1056 | { | |
1057 | /* Common symbols less than or equal to -G nn bytes are | |
1058 | automatically put into .sbss. */ | |
1059 | ||
1060 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); | |
1061 | ||
1062 | if (scomm == NULL) | |
1063 | { | |
1064 | scomm = bfd_make_section_with_flags (abfd, ".scommon", | |
1065 | (SEC_ALLOC | |
1066 | | SEC_IS_COMMON | |
1067 | | SEC_LINKER_CREATED)); | |
1068 | if (scomm == NULL) | |
1069 | return FALSE; | |
1070 | } | |
1071 | ||
1072 | *secp = scomm; | |
1073 | *valp = sym->st_size; | |
1074 | } | |
1075 | ||
1076 | return TRUE; | |
1077 | } | |
1078 | ||
1079 | /* Return the number of additional phdrs we will need. */ | |
1080 | ||
1081 | static int | |
1082 | elfNN_ia64_additional_program_headers (bfd *abfd, | |
1083 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1084 | { | |
1085 | asection *s; | |
1086 | int ret = 0; | |
1087 | ||
1088 | /* See if we need a PT_IA_64_ARCHEXT segment. */ | |
1089 | s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); | |
1090 | if (s && (s->flags & SEC_LOAD)) | |
1091 | ++ret; | |
1092 | ||
1093 | /* Count how many PT_IA_64_UNWIND segments we need. */ | |
1094 | for (s = abfd->sections; s; s = s->next) | |
1095 | if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD)) | |
1096 | ++ret; | |
1097 | ||
1098 | return ret; | |
1099 | } | |
1100 | ||
1101 | static bfd_boolean | |
1102 | elfNN_ia64_modify_segment_map (bfd *abfd, | |
1103 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1104 | { | |
1105 | struct elf_segment_map *m, **pm; | |
1106 | Elf_Internal_Shdr *hdr; | |
1107 | asection *s; | |
1108 | ||
1109 | /* If we need a PT_IA_64_ARCHEXT segment, it must come before | |
1110 | all PT_LOAD segments. */ | |
1111 | s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); | |
1112 | if (s && (s->flags & SEC_LOAD)) | |
1113 | { | |
12bd6957 | 1114 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
cbe79dfe TG |
1115 | if (m->p_type == PT_IA_64_ARCHEXT) |
1116 | break; | |
1117 | if (m == NULL) | |
1118 | { | |
1119 | m = ((struct elf_segment_map *) | |
1120 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
1121 | if (m == NULL) | |
1122 | return FALSE; | |
1123 | ||
1124 | m->p_type = PT_IA_64_ARCHEXT; | |
1125 | m->count = 1; | |
1126 | m->sections[0] = s; | |
1127 | ||
1128 | /* We want to put it after the PHDR and INTERP segments. */ | |
12bd6957 | 1129 | pm = &elf_seg_map (abfd); |
cbe79dfe TG |
1130 | while (*pm != NULL |
1131 | && ((*pm)->p_type == PT_PHDR | |
1132 | || (*pm)->p_type == PT_INTERP)) | |
1133 | pm = &(*pm)->next; | |
1134 | ||
1135 | m->next = *pm; | |
1136 | *pm = m; | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | /* Install PT_IA_64_UNWIND segments, if needed. */ | |
1141 | for (s = abfd->sections; s; s = s->next) | |
1142 | { | |
1143 | hdr = &elf_section_data (s)->this_hdr; | |
1144 | if (hdr->sh_type != SHT_IA_64_UNWIND) | |
1145 | continue; | |
1146 | ||
1147 | if (s && (s->flags & SEC_LOAD)) | |
1148 | { | |
12bd6957 | 1149 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
cbe79dfe TG |
1150 | if (m->p_type == PT_IA_64_UNWIND) |
1151 | { | |
1152 | int i; | |
1153 | ||
1154 | /* Look through all sections in the unwind segment | |
1155 | for a match since there may be multiple sections | |
1156 | to a segment. */ | |
1157 | for (i = m->count - 1; i >= 0; --i) | |
1158 | if (m->sections[i] == s) | |
1159 | break; | |
1160 | ||
1161 | if (i >= 0) | |
1162 | break; | |
1163 | } | |
1164 | ||
1165 | if (m == NULL) | |
1166 | { | |
1167 | m = ((struct elf_segment_map *) | |
1168 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); | |
1169 | if (m == NULL) | |
1170 | return FALSE; | |
1171 | ||
1172 | m->p_type = PT_IA_64_UNWIND; | |
1173 | m->count = 1; | |
1174 | m->sections[0] = s; | |
1175 | m->next = NULL; | |
1176 | ||
1177 | /* We want to put it last. */ | |
12bd6957 | 1178 | pm = &elf_seg_map (abfd); |
cbe79dfe TG |
1179 | while (*pm != NULL) |
1180 | pm = &(*pm)->next; | |
1181 | *pm = m; | |
1182 | } | |
1183 | } | |
1184 | } | |
1185 | ||
1186 | return TRUE; | |
1187 | } | |
1188 | ||
1189 | /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of | |
1190 | the input sections for each output section in the segment and testing | |
1191 | for SHF_IA_64_NORECOV on each. */ | |
1192 | ||
1193 | static bfd_boolean | |
1194 | elfNN_ia64_modify_program_headers (bfd *abfd, | |
1195 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1196 | { | |
1197 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
1198 | struct elf_segment_map *m; | |
1199 | Elf_Internal_Phdr *p; | |
1200 | ||
12bd6957 | 1201 | for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++) |
cbe79dfe TG |
1202 | if (m->p_type == PT_LOAD) |
1203 | { | |
1204 | int i; | |
1205 | for (i = m->count - 1; i >= 0; --i) | |
1206 | { | |
1207 | struct bfd_link_order *order = m->sections[i]->map_head.link_order; | |
1208 | ||
1209 | while (order != NULL) | |
1210 | { | |
1211 | if (order->type == bfd_indirect_link_order) | |
1212 | { | |
1213 | asection *is = order->u.indirect.section; | |
1214 | bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags; | |
1215 | if (flags & SHF_IA_64_NORECOV) | |
1216 | { | |
1217 | p->p_flags |= PF_IA_64_NORECOV; | |
1218 | goto found; | |
1219 | } | |
1220 | } | |
1221 | order = order->next; | |
1222 | } | |
1223 | } | |
1224 | found:; | |
1225 | } | |
1226 | ||
1227 | return TRUE; | |
1228 | } | |
1229 | ||
1230 | /* According to the Tahoe assembler spec, all labels starting with a | |
1231 | '.' are local. */ | |
1232 | ||
1233 | static bfd_boolean | |
1234 | elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, | |
1235 | const char *name) | |
1236 | { | |
1237 | return name[0] == '.'; | |
1238 | } | |
1239 | ||
1240 | /* Should we do dynamic things to this symbol? */ | |
1241 | ||
1242 | static bfd_boolean | |
1243 | elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h, | |
1244 | struct bfd_link_info *info, int r_type) | |
1245 | { | |
1246 | bfd_boolean ignore_protected | |
1247 | = ((r_type & 0xf8) == 0x40 /* FPTR relocs */ | |
1248 | || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */ | |
1249 | ||
1250 | return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected); | |
1251 | } | |
1252 | \f | |
1253 | static struct bfd_hash_entry* | |
1254 | elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry, | |
1255 | struct bfd_hash_table *table, | |
1256 | const char *string) | |
1257 | { | |
1258 | struct elfNN_ia64_link_hash_entry *ret; | |
1259 | ret = (struct elfNN_ia64_link_hash_entry *) entry; | |
1260 | ||
1261 | /* Allocate the structure if it has not already been allocated by a | |
1262 | subclass. */ | |
1263 | if (!ret) | |
1264 | ret = bfd_hash_allocate (table, sizeof (*ret)); | |
1265 | ||
1266 | if (!ret) | |
1267 | return 0; | |
1268 | ||
1269 | /* Call the allocation method of the superclass. */ | |
1270 | ret = ((struct elfNN_ia64_link_hash_entry *) | |
1271 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1272 | table, string)); | |
1273 | ||
1274 | ret->info = NULL; | |
1275 | ret->count = 0; | |
1276 | ret->sorted_count = 0; | |
1277 | ret->size = 0; | |
1278 | return (struct bfd_hash_entry *) ret; | |
1279 | } | |
1280 | ||
1281 | static void | |
1282 | elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info, | |
1283 | struct elf_link_hash_entry *xdir, | |
1284 | struct elf_link_hash_entry *xind) | |
1285 | { | |
1286 | struct elfNN_ia64_link_hash_entry *dir, *ind; | |
1287 | ||
1288 | dir = (struct elfNN_ia64_link_hash_entry *) xdir; | |
1289 | ind = (struct elfNN_ia64_link_hash_entry *) xind; | |
1290 | ||
1291 | /* Copy down any references that we may have already seen to the | |
1292 | symbol which just became indirect. */ | |
1293 | ||
e81830c5 AM |
1294 | if (dir->root.versioned != versioned_hidden) |
1295 | dir->root.ref_dynamic |= ind->root.ref_dynamic; | |
cbe79dfe TG |
1296 | dir->root.ref_regular |= ind->root.ref_regular; |
1297 | dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak; | |
1298 | dir->root.needs_plt |= ind->root.needs_plt; | |
1299 | ||
1300 | if (ind->root.root.type != bfd_link_hash_indirect) | |
1301 | return; | |
1302 | ||
1303 | /* Copy over the got and plt data. This would have been done | |
1304 | by check_relocs. */ | |
1305 | ||
1306 | if (ind->info != NULL) | |
1307 | { | |
1308 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1309 | unsigned int count; | |
1310 | ||
1311 | if (dir->info) | |
1312 | free (dir->info); | |
1313 | ||
1314 | dir->info = ind->info; | |
1315 | dir->count = ind->count; | |
1316 | dir->sorted_count = ind->sorted_count; | |
1317 | dir->size = ind->size; | |
1318 | ||
1319 | ind->info = NULL; | |
1320 | ind->count = 0; | |
1321 | ind->sorted_count = 0; | |
1322 | ind->size = 0; | |
1323 | ||
1324 | /* Fix up the dyn_sym_info pointers to the global symbol. */ | |
1325 | for (count = dir->count, dyn_i = dir->info; | |
1326 | count != 0; | |
1327 | count--, dyn_i++) | |
1328 | dyn_i->h = &dir->root; | |
1329 | } | |
1330 | ||
1331 | /* Copy over the dynindx. */ | |
1332 | ||
1333 | if (ind->root.dynindx != -1) | |
1334 | { | |
1335 | if (dir->root.dynindx != -1) | |
1336 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1337 | dir->root.dynstr_index); | |
1338 | dir->root.dynindx = ind->root.dynindx; | |
1339 | dir->root.dynstr_index = ind->root.dynstr_index; | |
1340 | ind->root.dynindx = -1; | |
1341 | ind->root.dynstr_index = 0; | |
1342 | } | |
1343 | } | |
1344 | ||
1345 | static void | |
1346 | elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info, | |
1347 | struct elf_link_hash_entry *xh, | |
1348 | bfd_boolean force_local) | |
1349 | { | |
1350 | struct elfNN_ia64_link_hash_entry *h; | |
1351 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1352 | unsigned int count; | |
1353 | ||
1354 | h = (struct elfNN_ia64_link_hash_entry *)xh; | |
1355 | ||
1356 | _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); | |
1357 | ||
1358 | for (count = h->count, dyn_i = h->info; | |
1359 | count != 0; | |
1360 | count--, dyn_i++) | |
1361 | { | |
1362 | dyn_i->want_plt2 = 0; | |
1363 | dyn_i->want_plt = 0; | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | /* Compute a hash of a local hash entry. */ | |
1368 | ||
1369 | static hashval_t | |
1370 | elfNN_ia64_local_htab_hash (const void *ptr) | |
1371 | { | |
1372 | struct elfNN_ia64_local_hash_entry *entry | |
1373 | = (struct elfNN_ia64_local_hash_entry *) ptr; | |
1374 | ||
1375 | return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym); | |
1376 | } | |
1377 | ||
1378 | /* Compare local hash entries. */ | |
1379 | ||
1380 | static int | |
1381 | elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2) | |
1382 | { | |
1383 | struct elfNN_ia64_local_hash_entry *entry1 | |
1384 | = (struct elfNN_ia64_local_hash_entry *) ptr1; | |
1385 | struct elfNN_ia64_local_hash_entry *entry2 | |
1386 | = (struct elfNN_ia64_local_hash_entry *) ptr2; | |
1387 | ||
1388 | return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym; | |
1389 | } | |
1390 | ||
cbe79dfe TG |
1391 | /* Free the global elfNN_ia64_dyn_sym_info array. */ |
1392 | ||
1393 | static bfd_boolean | |
1394 | elfNN_ia64_global_dyn_info_free (void **xentry, | |
2c3fc389 | 1395 | void * unused ATTRIBUTE_UNUSED) |
cbe79dfe TG |
1396 | { |
1397 | struct elfNN_ia64_link_hash_entry *entry | |
1398 | = (struct elfNN_ia64_link_hash_entry *) xentry; | |
1399 | ||
cbe79dfe TG |
1400 | if (entry->info) |
1401 | { | |
1402 | free (entry->info); | |
1403 | entry->info = NULL; | |
1404 | entry->count = 0; | |
1405 | entry->sorted_count = 0; | |
1406 | entry->size = 0; | |
1407 | } | |
1408 | ||
1409 | return TRUE; | |
1410 | } | |
1411 | ||
1412 | /* Free the local elfNN_ia64_dyn_sym_info array. */ | |
1413 | ||
1414 | static bfd_boolean | |
1415 | elfNN_ia64_local_dyn_info_free (void **slot, | |
2c3fc389 | 1416 | void * unused ATTRIBUTE_UNUSED) |
cbe79dfe TG |
1417 | { |
1418 | struct elfNN_ia64_local_hash_entry *entry | |
1419 | = (struct elfNN_ia64_local_hash_entry *) *slot; | |
1420 | ||
1421 | if (entry->info) | |
1422 | { | |
1423 | free (entry->info); | |
1424 | entry->info = NULL; | |
1425 | entry->count = 0; | |
1426 | entry->sorted_count = 0; | |
1427 | entry->size = 0; | |
1428 | } | |
1429 | ||
1430 | return TRUE; | |
1431 | } | |
1432 | ||
1433 | /* Destroy IA-64 linker hash table. */ | |
1434 | ||
1435 | static void | |
d495ab0d | 1436 | elfNN_ia64_link_hash_table_free (bfd *obfd) |
cbe79dfe TG |
1437 | { |
1438 | struct elfNN_ia64_link_hash_table *ia64_info | |
d495ab0d | 1439 | = (struct elfNN_ia64_link_hash_table *) obfd->link.hash; |
cbe79dfe TG |
1440 | if (ia64_info->loc_hash_table) |
1441 | { | |
1442 | htab_traverse (ia64_info->loc_hash_table, | |
1443 | elfNN_ia64_local_dyn_info_free, NULL); | |
1444 | htab_delete (ia64_info->loc_hash_table); | |
1445 | } | |
1446 | if (ia64_info->loc_hash_memory) | |
1447 | objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory); | |
1448 | elf_link_hash_traverse (&ia64_info->root, | |
1449 | elfNN_ia64_global_dyn_info_free, NULL); | |
d495ab0d | 1450 | _bfd_elf_link_hash_table_free (obfd); |
cbe79dfe TG |
1451 | } |
1452 | ||
68faa637 AM |
1453 | /* Create the derived linker hash table. The IA-64 ELF port uses this |
1454 | derived hash table to keep information specific to the IA-64 ElF | |
1455 | linker (without using static variables). */ | |
1456 | ||
1457 | static struct bfd_link_hash_table * | |
1458 | elfNN_ia64_hash_table_create (bfd *abfd) | |
1459 | { | |
1460 | struct elfNN_ia64_link_hash_table *ret; | |
1461 | ||
1462 | ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret)); | |
1463 | if (!ret) | |
1464 | return NULL; | |
1465 | ||
1466 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
1467 | elfNN_ia64_new_elf_hash_entry, | |
1468 | sizeof (struct elfNN_ia64_link_hash_entry), | |
1469 | IA64_ELF_DATA)) | |
1470 | { | |
1471 | free (ret); | |
1472 | return NULL; | |
1473 | } | |
1474 | ||
1475 | ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash, | |
1476 | elfNN_ia64_local_htab_eq, NULL); | |
1477 | ret->loc_hash_memory = objalloc_create (); | |
1478 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
1479 | { | |
d495ab0d | 1480 | elfNN_ia64_link_hash_table_free (abfd); |
68faa637 AM |
1481 | return NULL; |
1482 | } | |
d495ab0d | 1483 | ret->root.root.hash_table_free = elfNN_ia64_link_hash_table_free; |
68faa637 AM |
1484 | |
1485 | return &ret->root.root; | |
1486 | } | |
1487 | ||
cbe79dfe TG |
1488 | /* Traverse both local and global hash tables. */ |
1489 | ||
1490 | struct elfNN_ia64_dyn_sym_traverse_data | |
1491 | { | |
2c3fc389 NC |
1492 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *); |
1493 | void * data; | |
cbe79dfe TG |
1494 | }; |
1495 | ||
1496 | static bfd_boolean | |
1497 | elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry, | |
2c3fc389 | 1498 | void * xdata) |
cbe79dfe TG |
1499 | { |
1500 | struct elfNN_ia64_link_hash_entry *entry | |
1501 | = (struct elfNN_ia64_link_hash_entry *) xentry; | |
1502 | struct elfNN_ia64_dyn_sym_traverse_data *data | |
1503 | = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; | |
1504 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1505 | unsigned int count; | |
1506 | ||
cbe79dfe TG |
1507 | for (count = entry->count, dyn_i = entry->info; |
1508 | count != 0; | |
1509 | count--, dyn_i++) | |
1510 | if (! (*data->func) (dyn_i, data->data)) | |
1511 | return FALSE; | |
1512 | return TRUE; | |
1513 | } | |
1514 | ||
1515 | static bfd_boolean | |
2c3fc389 | 1516 | elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata) |
cbe79dfe TG |
1517 | { |
1518 | struct elfNN_ia64_local_hash_entry *entry | |
1519 | = (struct elfNN_ia64_local_hash_entry *) *slot; | |
1520 | struct elfNN_ia64_dyn_sym_traverse_data *data | |
1521 | = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; | |
1522 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
1523 | unsigned int count; | |
1524 | ||
1525 | for (count = entry->count, dyn_i = entry->info; | |
1526 | count != 0; | |
1527 | count--, dyn_i++) | |
1528 | if (! (*data->func) (dyn_i, data->data)) | |
1529 | return FALSE; | |
1530 | return TRUE; | |
1531 | } | |
1532 | ||
1533 | static void | |
1534 | elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info, | |
2c3fc389 NC |
1535 | bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *), |
1536 | void * data) | |
cbe79dfe TG |
1537 | { |
1538 | struct elfNN_ia64_dyn_sym_traverse_data xdata; | |
1539 | ||
1540 | xdata.func = func; | |
1541 | xdata.data = data; | |
1542 | ||
1543 | elf_link_hash_traverse (&ia64_info->root, | |
1544 | elfNN_ia64_global_dyn_sym_thunk, &xdata); | |
1545 | htab_traverse (ia64_info->loc_hash_table, | |
1546 | elfNN_ia64_local_dyn_sym_thunk, &xdata); | |
1547 | } | |
1548 | \f | |
1549 | static bfd_boolean | |
1550 | elfNN_ia64_create_dynamic_sections (bfd *abfd, | |
1551 | struct bfd_link_info *info) | |
1552 | { | |
1553 | struct elfNN_ia64_link_hash_table *ia64_info; | |
1554 | asection *s; | |
1555 | ||
1556 | if (! _bfd_elf_create_dynamic_sections (abfd, info)) | |
1557 | return FALSE; | |
1558 | ||
1559 | ia64_info = elfNN_ia64_hash_table (info); | |
1560 | if (ia64_info == NULL) | |
1561 | return FALSE; | |
1562 | ||
1563 | { | |
1564 | flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot); | |
1565 | bfd_set_section_flags (abfd, ia64_info->root.sgot, | |
1566 | SEC_SMALL_DATA | flags); | |
1567 | /* The .got section is always aligned at 8 bytes. */ | |
a253d456 NC |
1568 | if (! bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3)) |
1569 | return FALSE; | |
cbe79dfe TG |
1570 | } |
1571 | ||
1572 | if (!get_pltoff (abfd, info, ia64_info)) | |
1573 | return FALSE; | |
1574 | ||
3d4d4302 AM |
1575 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff", |
1576 | (SEC_ALLOC | SEC_LOAD | |
1577 | | SEC_HAS_CONTENTS | |
1578 | | SEC_IN_MEMORY | |
1579 | | SEC_LINKER_CREATED | |
1580 | | SEC_READONLY)); | |
cbe79dfe TG |
1581 | if (s == NULL |
1582 | || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN)) | |
1583 | return FALSE; | |
1584 | ia64_info->rel_pltoff_sec = s; | |
1585 | ||
1586 | return TRUE; | |
1587 | } | |
1588 | ||
1589 | /* Find and/or create a hash entry for local symbol. */ | |
1590 | static struct elfNN_ia64_local_hash_entry * | |
1591 | get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info, | |
1592 | bfd *abfd, const Elf_Internal_Rela *rel, | |
1593 | bfd_boolean create) | |
1594 | { | |
1595 | struct elfNN_ia64_local_hash_entry e, *ret; | |
1596 | asection *sec = abfd->sections; | |
1597 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
1598 | ELFNN_R_SYM (rel->r_info)); | |
1599 | void **slot; | |
1600 | ||
1601 | e.id = sec->id; | |
1602 | e.r_sym = ELFNN_R_SYM (rel->r_info); | |
1603 | slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h, | |
1604 | create ? INSERT : NO_INSERT); | |
1605 | ||
1606 | if (!slot) | |
1607 | return NULL; | |
1608 | ||
1609 | if (*slot) | |
1610 | return (struct elfNN_ia64_local_hash_entry *) *slot; | |
1611 | ||
1612 | ret = (struct elfNN_ia64_local_hash_entry *) | |
1613 | objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory, | |
1614 | sizeof (struct elfNN_ia64_local_hash_entry)); | |
1615 | if (ret) | |
1616 | { | |
1617 | memset (ret, 0, sizeof (*ret)); | |
1618 | ret->id = sec->id; | |
1619 | ret->r_sym = ELFNN_R_SYM (rel->r_info); | |
1620 | *slot = ret; | |
1621 | } | |
1622 | return ret; | |
1623 | } | |
1624 | ||
1625 | /* Used to sort elfNN_ia64_dyn_sym_info array. */ | |
1626 | ||
1627 | static int | |
1628 | addend_compare (const void *xp, const void *yp) | |
1629 | { | |
1630 | const struct elfNN_ia64_dyn_sym_info *x | |
1631 | = (const struct elfNN_ia64_dyn_sym_info *) xp; | |
1632 | const struct elfNN_ia64_dyn_sym_info *y | |
1633 | = (const struct elfNN_ia64_dyn_sym_info *) yp; | |
1634 | ||
1635 | return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0; | |
1636 | } | |
1637 | ||
1638 | /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */ | |
1639 | ||
1640 | static unsigned int | |
1641 | sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info, | |
1642 | unsigned int count) | |
1643 | { | |
1644 | bfd_vma curr, prev, got_offset; | |
1645 | unsigned int i, kept, dupes, diff, dest, src, len; | |
1646 | ||
1647 | qsort (info, count, sizeof (*info), addend_compare); | |
1648 | ||
1649 | /* Find the first duplicate. */ | |
1650 | prev = info [0].addend; | |
1651 | got_offset = info [0].got_offset; | |
1652 | for (i = 1; i < count; i++) | |
1653 | { | |
1654 | curr = info [i].addend; | |
1655 | if (curr == prev) | |
1656 | { | |
1657 | /* For duplicates, make sure that GOT_OFFSET is valid. */ | |
1658 | if (got_offset == (bfd_vma) -1) | |
1659 | got_offset = info [i].got_offset; | |
1660 | break; | |
1661 | } | |
1662 | got_offset = info [i].got_offset; | |
1663 | prev = curr; | |
1664 | } | |
1665 | ||
1666 | /* We may move a block of elements to here. */ | |
1667 | dest = i++; | |
1668 | ||
1669 | /* Remove duplicates. */ | |
1670 | if (i < count) | |
1671 | { | |
1672 | while (i < count) | |
1673 | { | |
1674 | /* For duplicates, make sure that the kept one has a valid | |
1675 | got_offset. */ | |
1676 | kept = dest - 1; | |
1677 | if (got_offset != (bfd_vma) -1) | |
1678 | info [kept].got_offset = got_offset; | |
1679 | ||
1680 | curr = info [i].addend; | |
1681 | got_offset = info [i].got_offset; | |
1682 | ||
1683 | /* Move a block of elements whose first one is different from | |
1684 | the previous. */ | |
1685 | if (curr == prev) | |
1686 | { | |
1687 | for (src = i + 1; src < count; src++) | |
1688 | { | |
1689 | if (info [src].addend != curr) | |
1690 | break; | |
1691 | /* For duplicates, make sure that GOT_OFFSET is | |
1692 | valid. */ | |
1693 | if (got_offset == (bfd_vma) -1) | |
1694 | got_offset = info [src].got_offset; | |
1695 | } | |
1696 | ||
1697 | /* Make sure that the kept one has a valid got_offset. */ | |
1698 | if (got_offset != (bfd_vma) -1) | |
1699 | info [kept].got_offset = got_offset; | |
1700 | } | |
1701 | else | |
1702 | src = i; | |
1703 | ||
1704 | if (src >= count) | |
1705 | break; | |
1706 | ||
1707 | /* Find the next duplicate. SRC will be kept. */ | |
1708 | prev = info [src].addend; | |
1709 | got_offset = info [src].got_offset; | |
1710 | for (dupes = src + 1; dupes < count; dupes ++) | |
1711 | { | |
1712 | curr = info [dupes].addend; | |
1713 | if (curr == prev) | |
1714 | { | |
1715 | /* Make sure that got_offset is valid. */ | |
1716 | if (got_offset == (bfd_vma) -1) | |
1717 | got_offset = info [dupes].got_offset; | |
1718 | ||
1719 | /* For duplicates, make sure that the kept one has | |
1720 | a valid got_offset. */ | |
1721 | if (got_offset != (bfd_vma) -1) | |
1722 | info [dupes - 1].got_offset = got_offset; | |
1723 | break; | |
1724 | } | |
1725 | got_offset = info [dupes].got_offset; | |
1726 | prev = curr; | |
1727 | } | |
1728 | ||
1729 | /* How much to move. */ | |
1730 | len = dupes - src; | |
1731 | i = dupes + 1; | |
1732 | ||
1733 | if (len == 1 && dupes < count) | |
1734 | { | |
1735 | /* If we only move 1 element, we combine it with the next | |
1736 | one. There must be at least a duplicate. Find the | |
1737 | next different one. */ | |
1738 | for (diff = dupes + 1, src++; diff < count; diff++, src++) | |
1739 | { | |
1740 | if (info [diff].addend != curr) | |
1741 | break; | |
1742 | /* Make sure that got_offset is valid. */ | |
1743 | if (got_offset == (bfd_vma) -1) | |
1744 | got_offset = info [diff].got_offset; | |
1745 | } | |
1746 | ||
1747 | /* Makre sure that the last duplicated one has an valid | |
1748 | offset. */ | |
1749 | BFD_ASSERT (curr == prev); | |
1750 | if (got_offset != (bfd_vma) -1) | |
1751 | info [diff - 1].got_offset = got_offset; | |
1752 | ||
1753 | if (diff < count) | |
1754 | { | |
1755 | /* Find the next duplicate. Track the current valid | |
1756 | offset. */ | |
1757 | prev = info [diff].addend; | |
1758 | got_offset = info [diff].got_offset; | |
1759 | for (dupes = diff + 1; dupes < count; dupes ++) | |
1760 | { | |
1761 | curr = info [dupes].addend; | |
1762 | if (curr == prev) | |
1763 | { | |
1764 | /* For duplicates, make sure that GOT_OFFSET | |
1765 | is valid. */ | |
1766 | if (got_offset == (bfd_vma) -1) | |
1767 | got_offset = info [dupes].got_offset; | |
1768 | break; | |
1769 | } | |
1770 | got_offset = info [dupes].got_offset; | |
1771 | prev = curr; | |
1772 | diff++; | |
1773 | } | |
1774 | ||
1775 | len = diff - src + 1; | |
1776 | i = diff + 1; | |
1777 | } | |
1778 | } | |
1779 | ||
1780 | memmove (&info [dest], &info [src], len * sizeof (*info)); | |
1781 | ||
1782 | dest += len; | |
1783 | } | |
1784 | ||
1785 | count = dest; | |
1786 | } | |
1787 | else | |
1788 | { | |
1789 | /* When we get here, either there is no duplicate at all or | |
1790 | the only duplicate is the last element. */ | |
1791 | if (dest < count) | |
1792 | { | |
1793 | /* If the last element is a duplicate, make sure that the | |
1794 | kept one has a valid got_offset. We also update count. */ | |
1795 | if (got_offset != (bfd_vma) -1) | |
1796 | info [dest - 1].got_offset = got_offset; | |
1797 | count = dest; | |
1798 | } | |
1799 | } | |
1800 | ||
1801 | return count; | |
1802 | } | |
1803 | ||
1804 | /* Find and/or create a descriptor for dynamic symbol info. This will | |
1805 | vary based on global or local symbol, and the addend to the reloc. | |
1806 | ||
1807 | We don't sort when inserting. Also, we sort and eliminate | |
1808 | duplicates if there is an unsorted section. Typically, this will | |
1809 | only happen once, because we do all insertions before lookups. We | |
1810 | then use bsearch to do a lookup. This also allows lookups to be | |
1811 | fast. So we have fast insertion (O(log N) due to duplicate check), | |
1812 | fast lookup (O(log N)) and one sort (O(N log N) expected time). | |
1813 | Previously, all lookups were O(N) because of the use of the linked | |
1814 | list and also all insertions were O(N) because of the check for | |
1815 | duplicates. There are some complications here because the array | |
1816 | size grows occasionally, which may add an O(N) factor, but this | |
1817 | should be rare. Also, we free the excess array allocation, which | |
1818 | requires a copy which is O(N), but this only happens once. */ | |
1819 | ||
1820 | static struct elfNN_ia64_dyn_sym_info * | |
1821 | get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info, | |
1822 | struct elf_link_hash_entry *h, bfd *abfd, | |
1823 | const Elf_Internal_Rela *rel, bfd_boolean create) | |
1824 | { | |
1825 | struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key; | |
1826 | unsigned int *count_p, *sorted_count_p, *size_p; | |
1827 | unsigned int count, sorted_count, size; | |
1828 | bfd_vma addend = rel ? rel->r_addend : 0; | |
1829 | bfd_size_type amt; | |
1830 | ||
1831 | if (h) | |
1832 | { | |
1833 | struct elfNN_ia64_link_hash_entry *global_h; | |
1834 | ||
1835 | global_h = (struct elfNN_ia64_link_hash_entry *) h; | |
1836 | info_p = &global_h->info; | |
1837 | count_p = &global_h->count; | |
1838 | sorted_count_p = &global_h->sorted_count; | |
1839 | size_p = &global_h->size; | |
1840 | } | |
1841 | else | |
1842 | { | |
1843 | struct elfNN_ia64_local_hash_entry *loc_h; | |
1844 | ||
1845 | loc_h = get_local_sym_hash (ia64_info, abfd, rel, create); | |
1846 | if (!loc_h) | |
1847 | { | |
1848 | BFD_ASSERT (!create); | |
1849 | return NULL; | |
1850 | } | |
1851 | ||
1852 | info_p = &loc_h->info; | |
1853 | count_p = &loc_h->count; | |
1854 | sorted_count_p = &loc_h->sorted_count; | |
1855 | size_p = &loc_h->size; | |
1856 | } | |
1857 | ||
1858 | count = *count_p; | |
1859 | sorted_count = *sorted_count_p; | |
1860 | size = *size_p; | |
1861 | info = *info_p; | |
1862 | if (create) | |
1863 | { | |
1864 | /* When we create the array, we don't check for duplicates, | |
07d6d2b8 | 1865 | except in the previously sorted section if one exists, and |
cbe79dfe TG |
1866 | against the last inserted entry. This allows insertions to |
1867 | be fast. */ | |
1868 | if (info) | |
1869 | { | |
1870 | if (sorted_count) | |
1871 | { | |
1872 | /* Try bsearch first on the sorted section. */ | |
1873 | key.addend = addend; | |
1874 | dyn_i = bsearch (&key, info, sorted_count, | |
1875 | sizeof (*info), addend_compare); | |
1876 | ||
1877 | if (dyn_i) | |
1878 | { | |
1879 | return dyn_i; | |
1880 | } | |
1881 | } | |
1882 | ||
1883 | /* Do a quick check for the last inserted entry. */ | |
1884 | dyn_i = info + count - 1; | |
1885 | if (dyn_i->addend == addend) | |
1886 | { | |
1887 | return dyn_i; | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | if (size == 0) | |
1892 | { | |
1893 | /* It is the very first element. We create the array of size | |
1894 | 1. */ | |
1895 | size = 1; | |
1896 | amt = size * sizeof (*info); | |
1897 | info = bfd_malloc (amt); | |
1898 | } | |
1899 | else if (size <= count) | |
1900 | { | |
1901 | /* We double the array size every time when we reach the | |
1902 | size limit. */ | |
1903 | size += size; | |
1904 | amt = size * sizeof (*info); | |
1905 | info = bfd_realloc (info, amt); | |
1906 | } | |
1907 | else | |
1908 | goto has_space; | |
1909 | ||
1910 | if (info == NULL) | |
1911 | return NULL; | |
1912 | *size_p = size; | |
1913 | *info_p = info; | |
1914 | ||
1915 | has_space: | |
1916 | /* Append the new one to the array. */ | |
1917 | dyn_i = info + count; | |
1918 | memset (dyn_i, 0, sizeof (*dyn_i)); | |
1919 | dyn_i->got_offset = (bfd_vma) -1; | |
1920 | dyn_i->addend = addend; | |
1921 | ||
1922 | /* We increment count only since the new ones are unsorted and | |
1923 | may have duplicate. */ | |
1924 | (*count_p)++; | |
1925 | } | |
1926 | else | |
1927 | { | |
1928 | /* It is a lookup without insertion. Sort array if part of the | |
1929 | array isn't sorted. */ | |
1930 | if (count != sorted_count) | |
1931 | { | |
1932 | count = sort_dyn_sym_info (info, count); | |
1933 | *count_p = count; | |
1934 | *sorted_count_p = count; | |
1935 | } | |
1936 | ||
1937 | /* Free unused memory. */ | |
1938 | if (size != count) | |
1939 | { | |
1940 | amt = count * sizeof (*info); | |
1941 | info = bfd_malloc (amt); | |
1942 | if (info != NULL) | |
1943 | { | |
1944 | memcpy (info, *info_p, amt); | |
1945 | free (*info_p); | |
1946 | *size_p = count; | |
1947 | *info_p = info; | |
1948 | } | |
1949 | } | |
1950 | ||
1951 | key.addend = addend; | |
1952 | dyn_i = bsearch (&key, info, count, | |
1953 | sizeof (*info), addend_compare); | |
1954 | } | |
1955 | ||
1956 | return dyn_i; | |
1957 | } | |
1958 | ||
1959 | static asection * | |
1960 | get_got (bfd *abfd, struct bfd_link_info *info, | |
1961 | struct elfNN_ia64_link_hash_table *ia64_info) | |
1962 | { | |
1963 | asection *got; | |
1964 | bfd *dynobj; | |
1965 | ||
1966 | got = ia64_info->root.sgot; | |
1967 | if (!got) | |
1968 | { | |
1969 | flagword flags; | |
1970 | ||
1971 | dynobj = ia64_info->root.dynobj; | |
1972 | if (!dynobj) | |
1973 | ia64_info->root.dynobj = dynobj = abfd; | |
1974 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
a253d456 | 1975 | return NULL; |
cbe79dfe TG |
1976 | |
1977 | got = ia64_info->root.sgot; | |
1978 | ||
1979 | /* The .got section is always aligned at 8 bytes. */ | |
1980 | if (!bfd_set_section_alignment (abfd, got, 3)) | |
a253d456 | 1981 | return NULL; |
cbe79dfe TG |
1982 | |
1983 | flags = bfd_get_section_flags (abfd, got); | |
a253d456 NC |
1984 | if (! bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags)) |
1985 | return NULL; | |
cbe79dfe TG |
1986 | } |
1987 | ||
1988 | return got; | |
1989 | } | |
1990 | ||
1991 | /* Create function descriptor section (.opd). This section is called .opd | |
1992 | because it contains "official procedure descriptors". The "official" | |
1993 | refers to the fact that these descriptors are used when taking the address | |
1994 | of a procedure, thus ensuring a unique address for each procedure. */ | |
1995 | ||
1996 | static asection * | |
1997 | get_fptr (bfd *abfd, struct bfd_link_info *info, | |
1998 | struct elfNN_ia64_link_hash_table *ia64_info) | |
1999 | { | |
2000 | asection *fptr; | |
2001 | bfd *dynobj; | |
2002 | ||
2003 | fptr = ia64_info->fptr_sec; | |
2004 | if (!fptr) | |
2005 | { | |
2006 | dynobj = ia64_info->root.dynobj; | |
2007 | if (!dynobj) | |
2008 | ia64_info->root.dynobj = dynobj = abfd; | |
2009 | ||
3d4d4302 AM |
2010 | fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd", |
2011 | (SEC_ALLOC | |
2012 | | SEC_LOAD | |
2013 | | SEC_HAS_CONTENTS | |
2014 | | SEC_IN_MEMORY | |
0e1862bb L |
2015 | | (bfd_link_pie (info) |
2016 | ? 0 : SEC_READONLY) | |
3d4d4302 | 2017 | | SEC_LINKER_CREATED)); |
cbe79dfe TG |
2018 | if (!fptr |
2019 | || !bfd_set_section_alignment (abfd, fptr, 4)) | |
2020 | { | |
2021 | BFD_ASSERT (0); | |
2022 | return NULL; | |
2023 | } | |
2024 | ||
2025 | ia64_info->fptr_sec = fptr; | |
2026 | ||
0e1862bb | 2027 | if (bfd_link_pie (info)) |
cbe79dfe TG |
2028 | { |
2029 | asection *fptr_rel; | |
3d4d4302 AM |
2030 | fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd", |
2031 | (SEC_ALLOC | SEC_LOAD | |
2032 | | SEC_HAS_CONTENTS | |
2033 | | SEC_IN_MEMORY | |
2034 | | SEC_LINKER_CREATED | |
2035 | | SEC_READONLY)); | |
cbe79dfe TG |
2036 | if (fptr_rel == NULL |
2037 | || !bfd_set_section_alignment (abfd, fptr_rel, | |
2038 | LOG_SECTION_ALIGN)) | |
2039 | { | |
2040 | BFD_ASSERT (0); | |
2041 | return NULL; | |
2042 | } | |
2043 | ||
2044 | ia64_info->rel_fptr_sec = fptr_rel; | |
2045 | } | |
2046 | } | |
2047 | ||
2048 | return fptr; | |
2049 | } | |
2050 | ||
2051 | static asection * | |
2052 | get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2053 | struct elfNN_ia64_link_hash_table *ia64_info) | |
2054 | { | |
2055 | asection *pltoff; | |
2056 | bfd *dynobj; | |
2057 | ||
2058 | pltoff = ia64_info->pltoff_sec; | |
2059 | if (!pltoff) | |
2060 | { | |
2061 | dynobj = ia64_info->root.dynobj; | |
2062 | if (!dynobj) | |
2063 | ia64_info->root.dynobj = dynobj = abfd; | |
2064 | ||
3d4d4302 AM |
2065 | pltoff = bfd_make_section_anyway_with_flags (dynobj, |
2066 | ELF_STRING_ia64_pltoff, | |
2067 | (SEC_ALLOC | |
2068 | | SEC_LOAD | |
2069 | | SEC_HAS_CONTENTS | |
2070 | | SEC_IN_MEMORY | |
2071 | | SEC_SMALL_DATA | |
2072 | | SEC_LINKER_CREATED)); | |
cbe79dfe TG |
2073 | if (!pltoff |
2074 | || !bfd_set_section_alignment (abfd, pltoff, 4)) | |
2075 | { | |
2076 | BFD_ASSERT (0); | |
2077 | return NULL; | |
2078 | } | |
2079 | ||
2080 | ia64_info->pltoff_sec = pltoff; | |
2081 | } | |
2082 | ||
2083 | return pltoff; | |
2084 | } | |
2085 | ||
2086 | static asection * | |
2087 | get_reloc_section (bfd *abfd, | |
2088 | struct elfNN_ia64_link_hash_table *ia64_info, | |
2089 | asection *sec, bfd_boolean create) | |
2090 | { | |
2091 | const char *srel_name; | |
2092 | asection *srel; | |
2093 | bfd *dynobj; | |
2094 | ||
2095 | srel_name = (bfd_elf_string_from_elf_section | |
2096 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
2097 | _bfd_elf_single_rel_hdr (sec)->sh_name)); | |
2098 | if (srel_name == NULL) | |
2099 | return NULL; | |
2100 | ||
2101 | dynobj = ia64_info->root.dynobj; | |
2102 | if (!dynobj) | |
2103 | ia64_info->root.dynobj = dynobj = abfd; | |
2104 | ||
3d4d4302 | 2105 | srel = bfd_get_linker_section (dynobj, srel_name); |
cbe79dfe TG |
2106 | if (srel == NULL && create) |
2107 | { | |
3d4d4302 AM |
2108 | srel = bfd_make_section_anyway_with_flags (dynobj, srel_name, |
2109 | (SEC_ALLOC | SEC_LOAD | |
2110 | | SEC_HAS_CONTENTS | |
2111 | | SEC_IN_MEMORY | |
2112 | | SEC_LINKER_CREATED | |
2113 | | SEC_READONLY)); | |
cbe79dfe TG |
2114 | if (srel == NULL |
2115 | || !bfd_set_section_alignment (dynobj, srel, | |
2116 | LOG_SECTION_ALIGN)) | |
2117 | return NULL; | |
2118 | } | |
2119 | ||
2120 | return srel; | |
2121 | } | |
2122 | ||
2123 | static bfd_boolean | |
2124 | count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2125 | asection *srel, int type, bfd_boolean reltext) | |
2126 | { | |
2127 | struct elfNN_ia64_dyn_reloc_entry *rent; | |
2128 | ||
2129 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) | |
2130 | if (rent->srel == srel && rent->type == type) | |
2131 | break; | |
2132 | ||
2133 | if (!rent) | |
2134 | { | |
2135 | rent = ((struct elfNN_ia64_dyn_reloc_entry *) | |
2136 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent))); | |
2137 | if (!rent) | |
2138 | return FALSE; | |
2139 | ||
2140 | rent->next = dyn_i->reloc_entries; | |
2141 | rent->srel = srel; | |
2142 | rent->type = type; | |
2143 | rent->count = 0; | |
2144 | dyn_i->reloc_entries = rent; | |
2145 | } | |
23ebcd30 | 2146 | rent->reltext = reltext; |
cbe79dfe TG |
2147 | rent->count++; |
2148 | ||
2149 | return TRUE; | |
2150 | } | |
2151 | ||
2152 | static bfd_boolean | |
2153 | elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
2154 | asection *sec, | |
2155 | const Elf_Internal_Rela *relocs) | |
2156 | { | |
2157 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2158 | const Elf_Internal_Rela *relend; | |
2159 | Elf_Internal_Shdr *symtab_hdr; | |
2160 | const Elf_Internal_Rela *rel; | |
2161 | asection *got, *fptr, *srel, *pltoff; | |
2162 | enum { | |
2163 | NEED_GOT = 1, | |
2164 | NEED_GOTX = 2, | |
2165 | NEED_FPTR = 4, | |
2166 | NEED_PLTOFF = 8, | |
2167 | NEED_MIN_PLT = 16, | |
2168 | NEED_FULL_PLT = 32, | |
2169 | NEED_DYNREL = 64, | |
2170 | NEED_LTOFF_FPTR = 128, | |
2171 | NEED_TPREL = 256, | |
2172 | NEED_DTPMOD = 512, | |
2173 | NEED_DTPREL = 1024 | |
2174 | }; | |
2175 | int need_entry; | |
2176 | struct elf_link_hash_entry *h; | |
2177 | unsigned long r_symndx; | |
2178 | bfd_boolean maybe_dynamic; | |
2179 | ||
0e1862bb | 2180 | if (bfd_link_relocatable (info)) |
cbe79dfe TG |
2181 | return TRUE; |
2182 | ||
2183 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2184 | ia64_info = elfNN_ia64_hash_table (info); | |
2185 | if (ia64_info == NULL) | |
2186 | return FALSE; | |
2187 | ||
2188 | got = fptr = srel = pltoff = NULL; | |
2189 | ||
2190 | relend = relocs + sec->reloc_count; | |
2191 | ||
2192 | /* We scan relocations first to create dynamic relocation arrays. We | |
2193 | modified get_dyn_sym_info to allow fast insertion and support fast | |
2194 | lookup in the next loop. */ | |
2195 | for (rel = relocs; rel < relend; ++rel) | |
2196 | { | |
2197 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
2198 | if (r_symndx >= symtab_hdr->sh_info) | |
2199 | { | |
2200 | long indx = r_symndx - symtab_hdr->sh_info; | |
2201 | h = elf_sym_hashes (abfd)[indx]; | |
2202 | while (h->root.type == bfd_link_hash_indirect | |
2203 | || h->root.type == bfd_link_hash_warning) | |
2204 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2205 | } | |
2206 | else | |
2207 | h = NULL; | |
2208 | ||
db41f6eb L |
2209 | if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
2210 | continue; | |
2211 | ||
cbe79dfe TG |
2212 | /* We can only get preliminary data on whether a symbol is |
2213 | locally or externally defined, as not all of the input files | |
2214 | have yet been processed. Do something with what we know, as | |
2215 | this may help reduce memory usage and processing time later. */ | |
0e1862bb | 2216 | maybe_dynamic = (h && ((!bfd_link_executable (info) |
cbe79dfe TG |
2217 | && (!SYMBOLIC_BIND (info, h) |
2218 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
2219 | || !h->def_regular | |
2220 | || h->root.type == bfd_link_hash_defweak)); | |
2221 | ||
2222 | need_entry = 0; | |
2223 | switch (ELFNN_R_TYPE (rel->r_info)) | |
2224 | { | |
2225 | case R_IA64_TPREL64MSB: | |
2226 | case R_IA64_TPREL64LSB: | |
0e1862bb | 2227 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2228 | need_entry = NEED_DYNREL; |
2229 | break; | |
2230 | ||
2231 | case R_IA64_LTOFF_TPREL22: | |
2232 | need_entry = NEED_TPREL; | |
0e1862bb | 2233 | if (bfd_link_pic (info)) |
cbe79dfe TG |
2234 | info->flags |= DF_STATIC_TLS; |
2235 | break; | |
2236 | ||
2237 | case R_IA64_DTPREL32MSB: | |
2238 | case R_IA64_DTPREL32LSB: | |
2239 | case R_IA64_DTPREL64MSB: | |
2240 | case R_IA64_DTPREL64LSB: | |
0e1862bb | 2241 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2242 | need_entry = NEED_DYNREL; |
2243 | break; | |
2244 | ||
2245 | case R_IA64_LTOFF_DTPREL22: | |
2246 | need_entry = NEED_DTPREL; | |
2247 | break; | |
2248 | ||
2249 | case R_IA64_DTPMOD64MSB: | |
2250 | case R_IA64_DTPMOD64LSB: | |
0e1862bb | 2251 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2252 | need_entry = NEED_DYNREL; |
2253 | break; | |
2254 | ||
2255 | case R_IA64_LTOFF_DTPMOD22: | |
2256 | need_entry = NEED_DTPMOD; | |
2257 | break; | |
2258 | ||
2259 | case R_IA64_LTOFF_FPTR22: | |
2260 | case R_IA64_LTOFF_FPTR64I: | |
2261 | case R_IA64_LTOFF_FPTR32MSB: | |
2262 | case R_IA64_LTOFF_FPTR32LSB: | |
2263 | case R_IA64_LTOFF_FPTR64MSB: | |
2264 | case R_IA64_LTOFF_FPTR64LSB: | |
2265 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; | |
2266 | break; | |
2267 | ||
2268 | case R_IA64_FPTR64I: | |
2269 | case R_IA64_FPTR32MSB: | |
2270 | case R_IA64_FPTR32LSB: | |
2271 | case R_IA64_FPTR64MSB: | |
2272 | case R_IA64_FPTR64LSB: | |
0e1862bb | 2273 | if (bfd_link_pic (info) || h) |
cbe79dfe TG |
2274 | need_entry = NEED_FPTR | NEED_DYNREL; |
2275 | else | |
2276 | need_entry = NEED_FPTR; | |
2277 | break; | |
2278 | ||
2279 | case R_IA64_LTOFF22: | |
2280 | case R_IA64_LTOFF64I: | |
2281 | need_entry = NEED_GOT; | |
2282 | break; | |
2283 | ||
2284 | case R_IA64_LTOFF22X: | |
2285 | need_entry = NEED_GOTX; | |
2286 | break; | |
2287 | ||
2288 | case R_IA64_PLTOFF22: | |
2289 | case R_IA64_PLTOFF64I: | |
2290 | case R_IA64_PLTOFF64MSB: | |
2291 | case R_IA64_PLTOFF64LSB: | |
2292 | need_entry = NEED_PLTOFF; | |
2293 | if (h) | |
2294 | { | |
2295 | if (maybe_dynamic) | |
2296 | need_entry |= NEED_MIN_PLT; | |
2297 | } | |
2298 | else | |
2299 | { | |
2300 | (*info->callbacks->warning) | |
2301 | (info, _("@pltoff reloc against local symbol"), 0, | |
2302 | abfd, 0, (bfd_vma) 0); | |
2303 | } | |
2304 | break; | |
2305 | ||
2306 | case R_IA64_PCREL21B: | |
07d6d2b8 | 2307 | case R_IA64_PCREL60B: |
cbe79dfe TG |
2308 | /* Depending on where this symbol is defined, we may or may not |
2309 | need a full plt entry. Only skip if we know we'll not need | |
2310 | the entry -- static or symbolic, and the symbol definition | |
2311 | has already been seen. */ | |
2312 | if (maybe_dynamic && rel->r_addend == 0) | |
2313 | need_entry = NEED_FULL_PLT; | |
2314 | break; | |
2315 | ||
2316 | case R_IA64_IMM14: | |
2317 | case R_IA64_IMM22: | |
2318 | case R_IA64_IMM64: | |
2319 | case R_IA64_DIR32MSB: | |
2320 | case R_IA64_DIR32LSB: | |
2321 | case R_IA64_DIR64MSB: | |
2322 | case R_IA64_DIR64LSB: | |
2323 | /* Shared objects will always need at least a REL relocation. */ | |
0e1862bb | 2324 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2325 | need_entry = NEED_DYNREL; |
2326 | break; | |
2327 | ||
2328 | case R_IA64_IPLTMSB: | |
2329 | case R_IA64_IPLTLSB: | |
2330 | /* Shared objects will always need at least a REL relocation. */ | |
0e1862bb | 2331 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2332 | need_entry = NEED_DYNREL; |
2333 | break; | |
2334 | ||
2335 | case R_IA64_PCREL22: | |
2336 | case R_IA64_PCREL64I: | |
2337 | case R_IA64_PCREL32MSB: | |
2338 | case R_IA64_PCREL32LSB: | |
2339 | case R_IA64_PCREL64MSB: | |
2340 | case R_IA64_PCREL64LSB: | |
2341 | if (maybe_dynamic) | |
2342 | need_entry = NEED_DYNREL; | |
2343 | break; | |
2344 | } | |
2345 | ||
2346 | if (!need_entry) | |
2347 | continue; | |
2348 | ||
2349 | if ((need_entry & NEED_FPTR) != 0 | |
2350 | && rel->r_addend) | |
2351 | { | |
2352 | (*info->callbacks->warning) | |
2353 | (info, _("non-zero addend in @fptr reloc"), 0, | |
2354 | abfd, 0, (bfd_vma) 0); | |
2355 | } | |
2356 | ||
2357 | if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL) | |
2358 | return FALSE; | |
2359 | } | |
2360 | ||
2361 | /* Now, we only do lookup without insertion, which is very fast | |
2362 | with the modified get_dyn_sym_info. */ | |
2363 | for (rel = relocs; rel < relend; ++rel) | |
2364 | { | |
2365 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
2366 | int dynrel_type = R_IA64_NONE; | |
2367 | ||
2368 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
2369 | if (r_symndx >= symtab_hdr->sh_info) | |
2370 | { | |
2371 | /* We're dealing with a global symbol -- find its hash entry | |
2372 | and mark it as being referenced. */ | |
2373 | long indx = r_symndx - symtab_hdr->sh_info; | |
2374 | h = elf_sym_hashes (abfd)[indx]; | |
2375 | while (h->root.type == bfd_link_hash_indirect | |
2376 | || h->root.type == bfd_link_hash_warning) | |
2377 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2378 | ||
81fbe831 AM |
2379 | /* PR15323, ref flags aren't set for references in the same |
2380 | object. */ | |
cbe79dfe TG |
2381 | h->ref_regular = 1; |
2382 | } | |
2383 | else | |
2384 | h = NULL; | |
2385 | ||
db41f6eb L |
2386 | if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
2387 | continue; | |
2388 | ||
cbe79dfe TG |
2389 | /* We can only get preliminary data on whether a symbol is |
2390 | locally or externally defined, as not all of the input files | |
2391 | have yet been processed. Do something with what we know, as | |
2392 | this may help reduce memory usage and processing time later. */ | |
0e1862bb | 2393 | maybe_dynamic = (h && ((!bfd_link_executable (info) |
cbe79dfe TG |
2394 | && (!SYMBOLIC_BIND (info, h) |
2395 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) | |
2396 | || !h->def_regular | |
2397 | || h->root.type == bfd_link_hash_defweak)); | |
2398 | ||
2399 | need_entry = 0; | |
2400 | switch (ELFNN_R_TYPE (rel->r_info)) | |
2401 | { | |
2402 | case R_IA64_TPREL64MSB: | |
2403 | case R_IA64_TPREL64LSB: | |
0e1862bb | 2404 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2405 | need_entry = NEED_DYNREL; |
2406 | dynrel_type = R_IA64_TPREL64LSB; | |
0e1862bb | 2407 | if (bfd_link_pic (info)) |
cbe79dfe TG |
2408 | info->flags |= DF_STATIC_TLS; |
2409 | break; | |
2410 | ||
2411 | case R_IA64_LTOFF_TPREL22: | |
2412 | need_entry = NEED_TPREL; | |
0e1862bb | 2413 | if (bfd_link_pic (info)) |
cbe79dfe TG |
2414 | info->flags |= DF_STATIC_TLS; |
2415 | break; | |
2416 | ||
2417 | case R_IA64_DTPREL32MSB: | |
2418 | case R_IA64_DTPREL32LSB: | |
2419 | case R_IA64_DTPREL64MSB: | |
2420 | case R_IA64_DTPREL64LSB: | |
0e1862bb | 2421 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2422 | need_entry = NEED_DYNREL; |
2423 | dynrel_type = R_IA64_DTPRELNNLSB; | |
2424 | break; | |
2425 | ||
2426 | case R_IA64_LTOFF_DTPREL22: | |
2427 | need_entry = NEED_DTPREL; | |
2428 | break; | |
2429 | ||
2430 | case R_IA64_DTPMOD64MSB: | |
2431 | case R_IA64_DTPMOD64LSB: | |
0e1862bb | 2432 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2433 | need_entry = NEED_DYNREL; |
2434 | dynrel_type = R_IA64_DTPMOD64LSB; | |
2435 | break; | |
2436 | ||
2437 | case R_IA64_LTOFF_DTPMOD22: | |
2438 | need_entry = NEED_DTPMOD; | |
2439 | break; | |
2440 | ||
2441 | case R_IA64_LTOFF_FPTR22: | |
2442 | case R_IA64_LTOFF_FPTR64I: | |
2443 | case R_IA64_LTOFF_FPTR32MSB: | |
2444 | case R_IA64_LTOFF_FPTR32LSB: | |
2445 | case R_IA64_LTOFF_FPTR64MSB: | |
2446 | case R_IA64_LTOFF_FPTR64LSB: | |
2447 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; | |
2448 | break; | |
2449 | ||
2450 | case R_IA64_FPTR64I: | |
2451 | case R_IA64_FPTR32MSB: | |
2452 | case R_IA64_FPTR32LSB: | |
2453 | case R_IA64_FPTR64MSB: | |
2454 | case R_IA64_FPTR64LSB: | |
0e1862bb | 2455 | if (bfd_link_pic (info) || h) |
cbe79dfe TG |
2456 | need_entry = NEED_FPTR | NEED_DYNREL; |
2457 | else | |
2458 | need_entry = NEED_FPTR; | |
2459 | dynrel_type = R_IA64_FPTRNNLSB; | |
2460 | break; | |
2461 | ||
2462 | case R_IA64_LTOFF22: | |
2463 | case R_IA64_LTOFF64I: | |
2464 | need_entry = NEED_GOT; | |
2465 | break; | |
2466 | ||
2467 | case R_IA64_LTOFF22X: | |
2468 | need_entry = NEED_GOTX; | |
2469 | break; | |
2470 | ||
2471 | case R_IA64_PLTOFF22: | |
2472 | case R_IA64_PLTOFF64I: | |
2473 | case R_IA64_PLTOFF64MSB: | |
2474 | case R_IA64_PLTOFF64LSB: | |
2475 | need_entry = NEED_PLTOFF; | |
2476 | if (h) | |
2477 | { | |
2478 | if (maybe_dynamic) | |
2479 | need_entry |= NEED_MIN_PLT; | |
2480 | } | |
2481 | break; | |
2482 | ||
2483 | case R_IA64_PCREL21B: | |
07d6d2b8 | 2484 | case R_IA64_PCREL60B: |
cbe79dfe TG |
2485 | /* Depending on where this symbol is defined, we may or may not |
2486 | need a full plt entry. Only skip if we know we'll not need | |
2487 | the entry -- static or symbolic, and the symbol definition | |
2488 | has already been seen. */ | |
2489 | if (maybe_dynamic && rel->r_addend == 0) | |
2490 | need_entry = NEED_FULL_PLT; | |
2491 | break; | |
2492 | ||
2493 | case R_IA64_IMM14: | |
2494 | case R_IA64_IMM22: | |
2495 | case R_IA64_IMM64: | |
2496 | case R_IA64_DIR32MSB: | |
2497 | case R_IA64_DIR32LSB: | |
2498 | case R_IA64_DIR64MSB: | |
2499 | case R_IA64_DIR64LSB: | |
2500 | /* Shared objects will always need at least a REL relocation. */ | |
0e1862bb | 2501 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2502 | need_entry = NEED_DYNREL; |
2503 | dynrel_type = R_IA64_DIRNNLSB; | |
2504 | break; | |
2505 | ||
2506 | case R_IA64_IPLTMSB: | |
2507 | case R_IA64_IPLTLSB: | |
2508 | /* Shared objects will always need at least a REL relocation. */ | |
0e1862bb | 2509 | if (bfd_link_pic (info) || maybe_dynamic) |
cbe79dfe TG |
2510 | need_entry = NEED_DYNREL; |
2511 | dynrel_type = R_IA64_IPLTLSB; | |
2512 | break; | |
2513 | ||
2514 | case R_IA64_PCREL22: | |
2515 | case R_IA64_PCREL64I: | |
2516 | case R_IA64_PCREL32MSB: | |
2517 | case R_IA64_PCREL32LSB: | |
2518 | case R_IA64_PCREL64MSB: | |
2519 | case R_IA64_PCREL64LSB: | |
2520 | if (maybe_dynamic) | |
2521 | need_entry = NEED_DYNREL; | |
2522 | dynrel_type = R_IA64_PCRELNNLSB; | |
2523 | break; | |
2524 | } | |
2525 | ||
2526 | if (!need_entry) | |
2527 | continue; | |
2528 | ||
2529 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE); | |
2530 | ||
2531 | /* Record whether or not this is a local symbol. */ | |
2532 | dyn_i->h = h; | |
2533 | ||
2534 | /* Create what's needed. */ | |
2535 | if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL | |
2536 | | NEED_DTPMOD | NEED_DTPREL)) | |
2537 | { | |
2538 | if (!got) | |
2539 | { | |
2540 | got = get_got (abfd, info, ia64_info); | |
2541 | if (!got) | |
2542 | return FALSE; | |
2543 | } | |
2544 | if (need_entry & NEED_GOT) | |
2545 | dyn_i->want_got = 1; | |
2546 | if (need_entry & NEED_GOTX) | |
2547 | dyn_i->want_gotx = 1; | |
2548 | if (need_entry & NEED_TPREL) | |
2549 | dyn_i->want_tprel = 1; | |
2550 | if (need_entry & NEED_DTPMOD) | |
2551 | dyn_i->want_dtpmod = 1; | |
2552 | if (need_entry & NEED_DTPREL) | |
2553 | dyn_i->want_dtprel = 1; | |
2554 | } | |
2555 | if (need_entry & NEED_FPTR) | |
2556 | { | |
2557 | if (!fptr) | |
2558 | { | |
2559 | fptr = get_fptr (abfd, info, ia64_info); | |
2560 | if (!fptr) | |
2561 | return FALSE; | |
2562 | } | |
2563 | ||
2564 | /* FPTRs for shared libraries are allocated by the dynamic | |
2565 | linker. Make sure this local symbol will appear in the | |
2566 | dynamic symbol table. */ | |
0e1862bb | 2567 | if (!h && bfd_link_pic (info)) |
cbe79dfe TG |
2568 | { |
2569 | if (! (bfd_elf_link_record_local_dynamic_symbol | |
2570 | (info, abfd, (long) r_symndx))) | |
2571 | return FALSE; | |
2572 | } | |
2573 | ||
2574 | dyn_i->want_fptr = 1; | |
2575 | } | |
2576 | if (need_entry & NEED_LTOFF_FPTR) | |
2577 | dyn_i->want_ltoff_fptr = 1; | |
2578 | if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT)) | |
2579 | { | |
07d6d2b8 | 2580 | if (!ia64_info->root.dynobj) |
cbe79dfe TG |
2581 | ia64_info->root.dynobj = abfd; |
2582 | h->needs_plt = 1; | |
2583 | dyn_i->want_plt = 1; | |
2584 | } | |
2585 | if (need_entry & NEED_FULL_PLT) | |
2586 | dyn_i->want_plt2 = 1; | |
2587 | if (need_entry & NEED_PLTOFF) | |
2588 | { | |
2589 | /* This is needed here, in case @pltoff is used in a non-shared | |
2590 | link. */ | |
2591 | if (!pltoff) | |
2592 | { | |
2593 | pltoff = get_pltoff (abfd, info, ia64_info); | |
2594 | if (!pltoff) | |
2595 | return FALSE; | |
2596 | } | |
2597 | ||
2598 | dyn_i->want_pltoff = 1; | |
2599 | } | |
2600 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) | |
2601 | { | |
2602 | if (!srel) | |
2603 | { | |
2604 | srel = get_reloc_section (abfd, ia64_info, sec, TRUE); | |
2605 | if (!srel) | |
2606 | return FALSE; | |
2607 | } | |
2608 | if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type, | |
2609 | (sec->flags & SEC_READONLY) != 0)) | |
2610 | return FALSE; | |
2611 | } | |
2612 | } | |
2613 | ||
2614 | return TRUE; | |
2615 | } | |
2616 | ||
2617 | /* For cleanliness, and potentially faster dynamic loading, allocate | |
2618 | external GOT entries first. */ | |
2619 | ||
2620 | static bfd_boolean | |
2621 | allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2622 | void * data) | |
2623 | { | |
2624 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2625 | ||
2626 | if ((dyn_i->want_got || dyn_i->want_gotx) | |
2627 | && ! dyn_i->want_fptr | |
2628 | && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2629 | { | |
2630 | dyn_i->got_offset = x->ofs; | |
2631 | x->ofs += 8; | |
2632 | } | |
2633 | if (dyn_i->want_tprel) | |
2634 | { | |
2635 | dyn_i->tprel_offset = x->ofs; | |
2636 | x->ofs += 8; | |
2637 | } | |
2638 | if (dyn_i->want_dtpmod) | |
2639 | { | |
2640 | if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2641 | { | |
2642 | dyn_i->dtpmod_offset = x->ofs; | |
2643 | x->ofs += 8; | |
2644 | } | |
2645 | else | |
2646 | { | |
2647 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2648 | ||
2649 | ia64_info = elfNN_ia64_hash_table (x->info); | |
2650 | if (ia64_info == NULL) | |
2651 | return FALSE; | |
2652 | ||
2653 | if (ia64_info->self_dtpmod_offset == (bfd_vma) -1) | |
2654 | { | |
2655 | ia64_info->self_dtpmod_offset = x->ofs; | |
2656 | x->ofs += 8; | |
2657 | } | |
2658 | dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset; | |
2659 | } | |
2660 | } | |
2661 | if (dyn_i->want_dtprel) | |
2662 | { | |
2663 | dyn_i->dtprel_offset = x->ofs; | |
2664 | x->ofs += 8; | |
2665 | } | |
2666 | return TRUE; | |
2667 | } | |
2668 | ||
2669 | /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */ | |
2670 | ||
2671 | static bfd_boolean | |
2672 | allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2673 | void * data) | |
2674 | { | |
2675 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2676 | ||
2677 | if (dyn_i->want_got | |
2678 | && dyn_i->want_fptr | |
2679 | && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB)) | |
2680 | { | |
2681 | dyn_i->got_offset = x->ofs; | |
2682 | x->ofs += 8; | |
2683 | } | |
2684 | return TRUE; | |
2685 | } | |
2686 | ||
2687 | /* Lastly, allocate all the GOT entries for local data. */ | |
2688 | ||
2689 | static bfd_boolean | |
2690 | allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2691 | void * data) |
cbe79dfe TG |
2692 | { |
2693 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2694 | ||
2695 | if ((dyn_i->want_got || dyn_i->want_gotx) | |
2696 | && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) | |
2697 | { | |
2698 | dyn_i->got_offset = x->ofs; | |
2699 | x->ofs += 8; | |
2700 | } | |
2701 | return TRUE; | |
2702 | } | |
2703 | ||
2704 | /* Search for the index of a global symbol in it's defining object file. */ | |
2705 | ||
2706 | static long | |
2707 | global_sym_index (struct elf_link_hash_entry *h) | |
2708 | { | |
2709 | struct elf_link_hash_entry **p; | |
2710 | bfd *obj; | |
2711 | ||
2712 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
2713 | || h->root.type == bfd_link_hash_defweak); | |
2714 | ||
2715 | obj = h->root.u.def.section->owner; | |
2716 | for (p = elf_sym_hashes (obj); *p != h; ++p) | |
2717 | continue; | |
2718 | ||
2719 | return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info; | |
2720 | } | |
2721 | ||
2722 | /* Allocate function descriptors. We can do these for every function | |
2723 | in a main executable that is not exported. */ | |
2724 | ||
2725 | static bfd_boolean | |
2c3fc389 | 2726 | allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data) |
cbe79dfe TG |
2727 | { |
2728 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2729 | ||
2730 | if (dyn_i->want_fptr) | |
2731 | { | |
2732 | struct elf_link_hash_entry *h = dyn_i->h; | |
2733 | ||
2734 | if (h) | |
2735 | while (h->root.type == bfd_link_hash_indirect | |
2736 | || h->root.type == bfd_link_hash_warning) | |
2737 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2738 | ||
0e1862bb | 2739 | if (!bfd_link_executable (x->info) |
cbe79dfe | 2740 | && (!h |
db41f6eb L |
2741 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2742 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (x->info, h)) | |
cbe79dfe TG |
2743 | || (h->root.type != bfd_link_hash_undefweak |
2744 | && h->root.type != bfd_link_hash_undefined))) | |
2745 | { | |
2746 | if (h && h->dynindx == -1) | |
2747 | { | |
2748 | BFD_ASSERT ((h->root.type == bfd_link_hash_defined) | |
2749 | || (h->root.type == bfd_link_hash_defweak)); | |
2750 | ||
2751 | if (!bfd_elf_link_record_local_dynamic_symbol | |
2752 | (x->info, h->root.u.def.section->owner, | |
2753 | global_sym_index (h))) | |
2754 | return FALSE; | |
2755 | } | |
2756 | ||
2757 | dyn_i->want_fptr = 0; | |
2758 | } | |
2759 | else if (h == NULL || h->dynindx == -1) | |
2760 | { | |
2761 | dyn_i->fptr_offset = x->ofs; | |
2762 | x->ofs += 16; | |
2763 | } | |
2764 | else | |
2765 | dyn_i->want_fptr = 0; | |
2766 | } | |
2767 | return TRUE; | |
2768 | } | |
2769 | ||
2770 | /* Allocate all the minimal PLT entries. */ | |
2771 | ||
2772 | static bfd_boolean | |
2773 | allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2774 | void * data) |
cbe79dfe TG |
2775 | { |
2776 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2777 | ||
2778 | if (dyn_i->want_plt) | |
2779 | { | |
2780 | struct elf_link_hash_entry *h = dyn_i->h; | |
2781 | ||
2782 | if (h) | |
2783 | while (h->root.type == bfd_link_hash_indirect | |
2784 | || h->root.type == bfd_link_hash_warning) | |
2785 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2786 | ||
2787 | /* ??? Versioned symbols seem to lose NEEDS_PLT. */ | |
2788 | if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0)) | |
2789 | { | |
2790 | bfd_size_type offset = x->ofs; | |
2791 | if (offset == 0) | |
2792 | offset = PLT_HEADER_SIZE; | |
2793 | dyn_i->plt_offset = offset; | |
2794 | x->ofs = offset + PLT_MIN_ENTRY_SIZE; | |
2795 | ||
2796 | dyn_i->want_pltoff = 1; | |
2797 | } | |
2798 | else | |
2799 | { | |
2800 | dyn_i->want_plt = 0; | |
2801 | dyn_i->want_plt2 = 0; | |
2802 | } | |
2803 | } | |
2804 | return TRUE; | |
2805 | } | |
2806 | ||
2807 | /* Allocate all the full PLT entries. */ | |
2808 | ||
2809 | static bfd_boolean | |
2810 | allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2811 | void * data) |
cbe79dfe TG |
2812 | { |
2813 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2814 | ||
2815 | if (dyn_i->want_plt2) | |
2816 | { | |
2817 | struct elf_link_hash_entry *h = dyn_i->h; | |
2818 | bfd_size_type ofs = x->ofs; | |
2819 | ||
2820 | dyn_i->plt2_offset = ofs; | |
2821 | x->ofs = ofs + PLT_FULL_ENTRY_SIZE; | |
2822 | ||
2823 | while (h->root.type == bfd_link_hash_indirect | |
2824 | || h->root.type == bfd_link_hash_warning) | |
2825 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2826 | dyn_i->h->plt.offset = ofs; | |
2827 | } | |
2828 | return TRUE; | |
2829 | } | |
2830 | ||
2831 | /* Allocate all the PLTOFF entries requested by relocations and | |
2832 | plt entries. We can't share space with allocated FPTR entries, | |
2833 | because the latter are not necessarily addressable by the GP. | |
2834 | ??? Relaxation might be able to determine that they are. */ | |
2835 | ||
2836 | static bfd_boolean | |
2837 | allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2838 | void * data) |
cbe79dfe TG |
2839 | { |
2840 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2841 | ||
2842 | if (dyn_i->want_pltoff) | |
2843 | { | |
2844 | dyn_i->pltoff_offset = x->ofs; | |
2845 | x->ofs += 16; | |
2846 | } | |
2847 | return TRUE; | |
2848 | } | |
2849 | ||
2850 | /* Allocate dynamic relocations for those symbols that turned out | |
2851 | to be dynamic. */ | |
2852 | ||
2853 | static bfd_boolean | |
2854 | allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, | |
2c3fc389 | 2855 | void * data) |
cbe79dfe TG |
2856 | { |
2857 | struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; | |
2858 | struct elfNN_ia64_link_hash_table *ia64_info; | |
2859 | struct elfNN_ia64_dyn_reloc_entry *rent; | |
2860 | bfd_boolean dynamic_symbol, shared, resolved_zero; | |
2861 | ||
2862 | ia64_info = elfNN_ia64_hash_table (x->info); | |
2863 | if (ia64_info == NULL) | |
2864 | return FALSE; | |
2865 | ||
2866 | /* Note that this can't be used in relation to FPTR relocs below. */ | |
2867 | dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0); | |
2868 | ||
0e1862bb | 2869 | shared = bfd_link_pic (x->info); |
cbe79dfe | 2870 | resolved_zero = (dyn_i->h |
db41f6eb L |
2871 | && UNDEFWEAK_NO_DYNAMIC_RELOC (x->info, |
2872 | dyn_i->h)); | |
cbe79dfe TG |
2873 | |
2874 | /* Take care of the GOT and PLT relocations. */ | |
2875 | ||
2876 | if ((!resolved_zero | |
2877 | && (dynamic_symbol || shared) | |
2878 | && (dyn_i->want_got || dyn_i->want_gotx)) | |
2879 | || (dyn_i->want_ltoff_fptr | |
2880 | && dyn_i->h | |
2881 | && dyn_i->h->dynindx != -1)) | |
2882 | { | |
2883 | if (!dyn_i->want_ltoff_fptr | |
0e1862bb | 2884 | || !bfd_link_pie (x->info) |
cbe79dfe TG |
2885 | || dyn_i->h == NULL |
2886 | || dyn_i->h->root.type != bfd_link_hash_undefweak) | |
2887 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2888 | } | |
2889 | if ((dynamic_symbol || shared) && dyn_i->want_tprel) | |
2890 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2891 | if (dynamic_symbol && dyn_i->want_dtpmod) | |
2892 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2893 | if (dynamic_symbol && dyn_i->want_dtprel) | |
2894 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); | |
2895 | ||
2896 | if (x->only_got) | |
2897 | return TRUE; | |
2898 | ||
2899 | if (ia64_info->rel_fptr_sec && dyn_i->want_fptr) | |
2900 | { | |
2901 | if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak) | |
2902 | ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela); | |
2903 | } | |
2904 | ||
2905 | if (!resolved_zero && dyn_i->want_pltoff) | |
2906 | { | |
2907 | bfd_size_type t = 0; | |
2908 | ||
2909 | /* Dynamic symbols get one IPLT relocation. Local symbols in | |
2910 | shared libraries get two REL relocations. Local symbols in | |
2911 | main applications get nothing. */ | |
2912 | if (dynamic_symbol) | |
2913 | t = sizeof (ElfNN_External_Rela); | |
2914 | else if (shared) | |
2915 | t = 2 * sizeof (ElfNN_External_Rela); | |
2916 | ||
2917 | ia64_info->rel_pltoff_sec->size += t; | |
2918 | } | |
2919 | ||
2920 | /* Take care of the normal data relocations. */ | |
2921 | ||
2922 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) | |
2923 | { | |
2924 | int count = rent->count; | |
2925 | ||
2926 | switch (rent->type) | |
2927 | { | |
2928 | case R_IA64_FPTR32LSB: | |
2929 | case R_IA64_FPTR64LSB: | |
2930 | /* Allocate one iff !want_fptr and not PIE, which by this point | |
2931 | will be true only if we're actually allocating one statically | |
2932 | in the main executable. Position independent executables | |
2933 | need a relative reloc. */ | |
0e1862bb | 2934 | if (dyn_i->want_fptr && !bfd_link_pie (x->info)) |
cbe79dfe TG |
2935 | continue; |
2936 | break; | |
2937 | case R_IA64_PCREL32LSB: | |
2938 | case R_IA64_PCREL64LSB: | |
2939 | if (!dynamic_symbol) | |
2940 | continue; | |
2941 | break; | |
2942 | case R_IA64_DIR32LSB: | |
2943 | case R_IA64_DIR64LSB: | |
2944 | if (!dynamic_symbol && !shared) | |
2945 | continue; | |
2946 | break; | |
2947 | case R_IA64_IPLTLSB: | |
2948 | if (!dynamic_symbol && !shared) | |
2949 | continue; | |
2950 | /* Use two REL relocations for IPLT relocations | |
2951 | against local symbols. */ | |
2952 | if (!dynamic_symbol) | |
2953 | count *= 2; | |
2954 | break; | |
2955 | case R_IA64_DTPREL32LSB: | |
2956 | case R_IA64_TPREL64LSB: | |
2957 | case R_IA64_DTPREL64LSB: | |
2958 | case R_IA64_DTPMOD64LSB: | |
2959 | break; | |
2960 | default: | |
2961 | abort (); | |
2962 | } | |
2963 | if (rent->reltext) | |
2964 | ia64_info->reltext = 1; | |
2965 | rent->srel->size += sizeof (ElfNN_External_Rela) * count; | |
2966 | } | |
2967 | ||
2968 | return TRUE; | |
2969 | } | |
2970 | ||
2971 | static bfd_boolean | |
2972 | elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2973 | struct elf_link_hash_entry *h) | |
2974 | { | |
2975 | /* ??? Undefined symbols with PLT entries should be re-defined | |
2976 | to be the PLT entry. */ | |
2977 | ||
2978 | /* If this is a weak symbol, and there is a real definition, the | |
2979 | processor independent code will have arranged for us to see the | |
2980 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 2981 | if (h->is_weakalias) |
cbe79dfe | 2982 | { |
60d67dc8 AM |
2983 | struct elf_link_hash_entry *def = weakdef (h); |
2984 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
2985 | h->root.u.def.section = def->root.u.def.section; | |
2986 | h->root.u.def.value = def->root.u.def.value; | |
cbe79dfe TG |
2987 | return TRUE; |
2988 | } | |
2989 | ||
2990 | /* If this is a reference to a symbol defined by a dynamic object which | |
2991 | is not a function, we might allocate the symbol in our .dynbss section | |
2992 | and allocate a COPY dynamic relocation. | |
2993 | ||
2994 | But IA-64 code is canonically PIC, so as a rule we can avoid this sort | |
2995 | of hackery. */ | |
2996 | ||
2997 | return TRUE; | |
2998 | } | |
2999 | ||
3000 | static bfd_boolean | |
3001 | elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
3002 | struct bfd_link_info *info) | |
3003 | { | |
3004 | struct elfNN_ia64_allocate_data data; | |
3005 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3006 | asection *sec; | |
3007 | bfd *dynobj; | |
3008 | bfd_boolean relplt = FALSE; | |
3009 | ||
cbe79dfe TG |
3010 | ia64_info = elfNN_ia64_hash_table (info); |
3011 | if (ia64_info == NULL) | |
3012 | return FALSE; | |
ce558b89 | 3013 | dynobj = ia64_info->root.dynobj; |
cbe79dfe TG |
3014 | ia64_info->self_dtpmod_offset = (bfd_vma) -1; |
3015 | BFD_ASSERT(dynobj != NULL); | |
3016 | data.info = info; | |
3017 | ||
3018 | /* Set the contents of the .interp section to the interpreter. */ | |
3019 | if (ia64_info->root.dynamic_sections_created | |
9b8b325a | 3020 | && bfd_link_executable (info) && !info->nointerp) |
cbe79dfe | 3021 | { |
3d4d4302 | 3022 | sec = bfd_get_linker_section (dynobj, ".interp"); |
cbe79dfe TG |
3023 | BFD_ASSERT (sec != NULL); |
3024 | sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; | |
3025 | sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; | |
3026 | } | |
3027 | ||
3028 | /* Allocate the GOT entries. */ | |
3029 | ||
3030 | if (ia64_info->root.sgot) | |
3031 | { | |
3032 | data.ofs = 0; | |
3033 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); | |
3034 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); | |
3035 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); | |
3036 | ia64_info->root.sgot->size = data.ofs; | |
3037 | } | |
3038 | ||
3039 | /* Allocate the FPTR entries. */ | |
3040 | ||
3041 | if (ia64_info->fptr_sec) | |
3042 | { | |
3043 | data.ofs = 0; | |
3044 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data); | |
3045 | ia64_info->fptr_sec->size = data.ofs; | |
3046 | } | |
3047 | ||
3048 | /* Now that we've seen all of the input files, we can decide which | |
3049 | symbols need plt entries. Allocate the minimal PLT entries first. | |
3050 | We do this even though dynamic_sections_created may be FALSE, because | |
3051 | this has the side-effect of clearing want_plt and want_plt2. */ | |
3052 | ||
3053 | data.ofs = 0; | |
3054 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data); | |
3055 | ||
3056 | ia64_info->minplt_entries = 0; | |
3057 | if (data.ofs) | |
3058 | { | |
3059 | ia64_info->minplt_entries | |
3060 | = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; | |
3061 | } | |
3062 | ||
3063 | /* Align the pointer for the plt2 entries. */ | |
3064 | data.ofs = (data.ofs + 31) & (bfd_vma) -32; | |
3065 | ||
3066 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data); | |
3067 | if (data.ofs != 0 || ia64_info->root.dynamic_sections_created) | |
3068 | { | |
3069 | /* FIXME: we always reserve the memory for dynamic linker even if | |
3070 | there are no PLT entries since dynamic linker may assume the | |
3071 | reserved memory always exists. */ | |
3072 | ||
3073 | BFD_ASSERT (ia64_info->root.dynamic_sections_created); | |
3074 | ||
3075 | ia64_info->root.splt->size = data.ofs; | |
3076 | ||
3077 | /* If we've got a .plt, we need some extra memory for the dynamic | |
3078 | linker. We stuff these in .got.plt. */ | |
ce558b89 | 3079 | ia64_info->root.sgotplt->size = 8 * PLT_RESERVED_WORDS; |
cbe79dfe TG |
3080 | } |
3081 | ||
3082 | /* Allocate the PLTOFF entries. */ | |
3083 | ||
3084 | if (ia64_info->pltoff_sec) | |
3085 | { | |
3086 | data.ofs = 0; | |
3087 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data); | |
3088 | ia64_info->pltoff_sec->size = data.ofs; | |
3089 | } | |
3090 | ||
3091 | if (ia64_info->root.dynamic_sections_created) | |
3092 | { | |
3093 | /* Allocate space for the dynamic relocations that turned out to be | |
3094 | required. */ | |
3095 | ||
0e1862bb | 3096 | if (bfd_link_pic (info) && ia64_info->self_dtpmod_offset != (bfd_vma) -1) |
cbe79dfe TG |
3097 | ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); |
3098 | data.only_got = FALSE; | |
3099 | elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data); | |
3100 | } | |
3101 | ||
3102 | /* We have now determined the sizes of the various dynamic sections. | |
3103 | Allocate memory for them. */ | |
3104 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) | |
3105 | { | |
3106 | bfd_boolean strip; | |
3107 | ||
3108 | if (!(sec->flags & SEC_LINKER_CREATED)) | |
3109 | continue; | |
3110 | ||
3111 | /* If we don't need this section, strip it from the output file. | |
3112 | There were several sections primarily related to dynamic | |
3113 | linking that must be create before the linker maps input | |
3114 | sections to output sections. The linker does that before | |
3115 | bfd_elf_size_dynamic_sections is called, and it is that | |
3116 | function which decides whether anything needs to go into | |
3117 | these sections. */ | |
3118 | ||
3119 | strip = (sec->size == 0); | |
3120 | ||
3121 | if (sec == ia64_info->root.sgot) | |
3122 | strip = FALSE; | |
3123 | else if (sec == ia64_info->root.srelgot) | |
3124 | { | |
3125 | if (strip) | |
3126 | ia64_info->root.srelgot = NULL; | |
3127 | else | |
3128 | /* We use the reloc_count field as a counter if we need to | |
3129 | copy relocs into the output file. */ | |
3130 | sec->reloc_count = 0; | |
3131 | } | |
3132 | else if (sec == ia64_info->fptr_sec) | |
3133 | { | |
3134 | if (strip) | |
3135 | ia64_info->fptr_sec = NULL; | |
3136 | } | |
3137 | else if (sec == ia64_info->rel_fptr_sec) | |
3138 | { | |
3139 | if (strip) | |
3140 | ia64_info->rel_fptr_sec = NULL; | |
3141 | else | |
3142 | /* We use the reloc_count field as a counter if we need to | |
3143 | copy relocs into the output file. */ | |
3144 | sec->reloc_count = 0; | |
3145 | } | |
3146 | else if (sec == ia64_info->root.splt) | |
3147 | { | |
3148 | if (strip) | |
3149 | ia64_info->root.splt = NULL; | |
3150 | } | |
3151 | else if (sec == ia64_info->pltoff_sec) | |
3152 | { | |
3153 | if (strip) | |
3154 | ia64_info->pltoff_sec = NULL; | |
3155 | } | |
3156 | else if (sec == ia64_info->rel_pltoff_sec) | |
3157 | { | |
3158 | if (strip) | |
3159 | ia64_info->rel_pltoff_sec = NULL; | |
3160 | else | |
3161 | { | |
3162 | relplt = TRUE; | |
3163 | /* We use the reloc_count field as a counter if we need to | |
3164 | copy relocs into the output file. */ | |
3165 | sec->reloc_count = 0; | |
3166 | } | |
3167 | } | |
3168 | else | |
3169 | { | |
3170 | const char *name; | |
3171 | ||
3172 | /* It's OK to base decisions on the section name, because none | |
3173 | of the dynobj section names depend upon the input files. */ | |
3174 | name = bfd_get_section_name (dynobj, sec); | |
3175 | ||
3176 | if (strcmp (name, ".got.plt") == 0) | |
3177 | strip = FALSE; | |
3178 | else if (CONST_STRNEQ (name, ".rel")) | |
3179 | { | |
3180 | if (!strip) | |
3181 | { | |
3182 | /* We use the reloc_count field as a counter if we need to | |
3183 | copy relocs into the output file. */ | |
3184 | sec->reloc_count = 0; | |
3185 | } | |
3186 | } | |
3187 | else | |
3188 | continue; | |
3189 | } | |
3190 | ||
3191 | if (strip) | |
3192 | sec->flags |= SEC_EXCLUDE; | |
3193 | else | |
3194 | { | |
3195 | /* Allocate memory for the section contents. */ | |
3196 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); | |
3197 | if (sec->contents == NULL && sec->size != 0) | |
3198 | return FALSE; | |
3199 | } | |
3200 | } | |
3201 | ||
ce558b89 | 3202 | if (ia64_info->root.dynamic_sections_created) |
cbe79dfe TG |
3203 | { |
3204 | /* Add some entries to the .dynamic section. We fill in the values | |
3205 | later (in finish_dynamic_sections) but we must add the entries now | |
3206 | so that we get the correct size for the .dynamic section. */ | |
3207 | ||
0e1862bb | 3208 | if (bfd_link_executable (info)) |
cbe79dfe TG |
3209 | { |
3210 | /* The DT_DEBUG entry is filled in by the dynamic linker and used | |
3211 | by the debugger. */ | |
3212 | #define add_dynamic_entry(TAG, VAL) \ | |
3213 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3214 | ||
3215 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
3216 | return FALSE; | |
3217 | } | |
3218 | ||
3219 | if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0)) | |
3220 | return FALSE; | |
3221 | if (!add_dynamic_entry (DT_PLTGOT, 0)) | |
3222 | return FALSE; | |
3223 | ||
3224 | if (relplt) | |
3225 | { | |
3226 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) | |
3227 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3228 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
3229 | return FALSE; | |
3230 | } | |
3231 | ||
3232 | if (!add_dynamic_entry (DT_RELA, 0) | |
3233 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3234 | || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela))) | |
3235 | return FALSE; | |
3236 | ||
3237 | if (ia64_info->reltext) | |
3238 | { | |
3239 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
3240 | return FALSE; | |
3241 | info->flags |= DF_TEXTREL; | |
3242 | } | |
3243 | } | |
3244 | ||
3245 | /* ??? Perhaps force __gp local. */ | |
3246 | ||
3247 | return TRUE; | |
3248 | } | |
3249 | ||
3250 | static void | |
3251 | elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info, | |
3252 | asection *sec, asection *srel, | |
3253 | bfd_vma offset, unsigned int type, | |
3254 | long dynindx, bfd_vma addend) | |
3255 | { | |
3256 | Elf_Internal_Rela outrel; | |
3257 | bfd_byte *loc; | |
3258 | ||
3259 | BFD_ASSERT (dynindx != -1); | |
3260 | outrel.r_info = ELFNN_R_INFO (dynindx, type); | |
3261 | outrel.r_addend = addend; | |
3262 | outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
3263 | if (outrel.r_offset >= (bfd_vma) -2) | |
3264 | { | |
3265 | /* Run for the hills. We shouldn't be outputting a relocation | |
3266 | for this. So do what everyone else does and output a no-op. */ | |
3267 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE); | |
3268 | outrel.r_addend = 0; | |
3269 | outrel.r_offset = 0; | |
3270 | } | |
3271 | else | |
3272 | outrel.r_offset += sec->output_section->vma + sec->output_offset; | |
3273 | ||
3274 | loc = srel->contents; | |
3275 | loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela); | |
3276 | bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); | |
3277 | BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size); | |
3278 | } | |
3279 | ||
3280 | /* Store an entry for target address TARGET_ADDR in the linkage table | |
3281 | and return the gp-relative address of the linkage table entry. */ | |
3282 | ||
3283 | static bfd_vma | |
3284 | set_got_entry (bfd *abfd, struct bfd_link_info *info, | |
3285 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3286 | long dynindx, bfd_vma addend, bfd_vma value, | |
3287 | unsigned int dyn_r_type) | |
3288 | { | |
3289 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3290 | asection *got_sec; | |
3291 | bfd_boolean done; | |
3292 | bfd_vma got_offset; | |
3293 | ||
3294 | ia64_info = elfNN_ia64_hash_table (info); | |
3295 | if (ia64_info == NULL) | |
3296 | return 0; | |
3297 | ||
3298 | got_sec = ia64_info->root.sgot; | |
3299 | ||
3300 | switch (dyn_r_type) | |
3301 | { | |
3302 | case R_IA64_TPREL64LSB: | |
3303 | done = dyn_i->tprel_done; | |
3304 | dyn_i->tprel_done = TRUE; | |
3305 | got_offset = dyn_i->tprel_offset; | |
3306 | break; | |
3307 | case R_IA64_DTPMOD64LSB: | |
3308 | if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset) | |
3309 | { | |
3310 | done = dyn_i->dtpmod_done; | |
3311 | dyn_i->dtpmod_done = TRUE; | |
3312 | } | |
3313 | else | |
3314 | { | |
3315 | done = ia64_info->self_dtpmod_done; | |
3316 | ia64_info->self_dtpmod_done = TRUE; | |
3317 | dynindx = 0; | |
3318 | } | |
3319 | got_offset = dyn_i->dtpmod_offset; | |
3320 | break; | |
3321 | case R_IA64_DTPREL32LSB: | |
3322 | case R_IA64_DTPREL64LSB: | |
3323 | done = dyn_i->dtprel_done; | |
3324 | dyn_i->dtprel_done = TRUE; | |
3325 | got_offset = dyn_i->dtprel_offset; | |
3326 | break; | |
3327 | default: | |
3328 | done = dyn_i->got_done; | |
3329 | dyn_i->got_done = TRUE; | |
3330 | got_offset = dyn_i->got_offset; | |
3331 | break; | |
3332 | } | |
3333 | ||
3334 | BFD_ASSERT ((got_offset & 7) == 0); | |
3335 | ||
3336 | if (! done) | |
3337 | { | |
3338 | /* Store the target address in the linkage table entry. */ | |
3339 | bfd_put_64 (abfd, value, got_sec->contents + got_offset); | |
3340 | ||
3341 | /* Install a dynamic relocation if needed. */ | |
0e1862bb | 3342 | if (((bfd_link_pic (info) |
cbe79dfe | 3343 | && (!dyn_i->h |
db41f6eb L |
3344 | || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT |
3345 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h)) | |
cbe79dfe TG |
3346 | || dyn_i->h->root.type != bfd_link_hash_undefweak) |
3347 | && dyn_r_type != R_IA64_DTPREL32LSB | |
3348 | && dyn_r_type != R_IA64_DTPREL64LSB) | |
07d6d2b8 | 3349 | || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type) |
cbe79dfe TG |
3350 | || (dynindx != -1 |
3351 | && (dyn_r_type == R_IA64_FPTR32LSB | |
3352 | || dyn_r_type == R_IA64_FPTR64LSB))) | |
3353 | && (!dyn_i->want_ltoff_fptr | |
0e1862bb | 3354 | || !bfd_link_pie (info) |
cbe79dfe TG |
3355 | || !dyn_i->h |
3356 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) | |
3357 | { | |
3358 | if (dynindx == -1 | |
3359 | && dyn_r_type != R_IA64_TPREL64LSB | |
3360 | && dyn_r_type != R_IA64_DTPMOD64LSB | |
3361 | && dyn_r_type != R_IA64_DTPREL32LSB | |
3362 | && dyn_r_type != R_IA64_DTPREL64LSB) | |
3363 | { | |
3364 | dyn_r_type = R_IA64_RELNNLSB; | |
3365 | dynindx = 0; | |
3366 | addend = value; | |
3367 | } | |
3368 | ||
3369 | if (bfd_big_endian (abfd)) | |
3370 | { | |
3371 | switch (dyn_r_type) | |
3372 | { | |
3373 | case R_IA64_REL32LSB: | |
3374 | dyn_r_type = R_IA64_REL32MSB; | |
3375 | break; | |
3376 | case R_IA64_DIR32LSB: | |
3377 | dyn_r_type = R_IA64_DIR32MSB; | |
3378 | break; | |
3379 | case R_IA64_FPTR32LSB: | |
3380 | dyn_r_type = R_IA64_FPTR32MSB; | |
3381 | break; | |
3382 | case R_IA64_DTPREL32LSB: | |
3383 | dyn_r_type = R_IA64_DTPREL32MSB; | |
3384 | break; | |
3385 | case R_IA64_REL64LSB: | |
3386 | dyn_r_type = R_IA64_REL64MSB; | |
3387 | break; | |
3388 | case R_IA64_DIR64LSB: | |
3389 | dyn_r_type = R_IA64_DIR64MSB; | |
3390 | break; | |
3391 | case R_IA64_FPTR64LSB: | |
3392 | dyn_r_type = R_IA64_FPTR64MSB; | |
3393 | break; | |
3394 | case R_IA64_TPREL64LSB: | |
3395 | dyn_r_type = R_IA64_TPREL64MSB; | |
3396 | break; | |
3397 | case R_IA64_DTPMOD64LSB: | |
3398 | dyn_r_type = R_IA64_DTPMOD64MSB; | |
3399 | break; | |
3400 | case R_IA64_DTPREL64LSB: | |
3401 | dyn_r_type = R_IA64_DTPREL64MSB; | |
3402 | break; | |
3403 | default: | |
3404 | BFD_ASSERT (FALSE); | |
3405 | break; | |
3406 | } | |
3407 | } | |
3408 | ||
3409 | elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec, | |
3410 | ia64_info->root.srelgot, | |
3411 | got_offset, dyn_r_type, | |
3412 | dynindx, addend); | |
3413 | } | |
3414 | } | |
3415 | ||
3416 | /* Return the address of the linkage table entry. */ | |
3417 | value = (got_sec->output_section->vma | |
3418 | + got_sec->output_offset | |
3419 | + got_offset); | |
3420 | ||
3421 | return value; | |
3422 | } | |
3423 | ||
3424 | /* Fill in a function descriptor consisting of the function's code | |
3425 | address and its global pointer. Return the descriptor's address. */ | |
3426 | ||
3427 | static bfd_vma | |
3428 | set_fptr_entry (bfd *abfd, struct bfd_link_info *info, | |
3429 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3430 | bfd_vma value) | |
3431 | { | |
3432 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3433 | asection *fptr_sec; | |
3434 | ||
3435 | ia64_info = elfNN_ia64_hash_table (info); | |
3436 | if (ia64_info == NULL) | |
3437 | return 0; | |
3438 | ||
3439 | fptr_sec = ia64_info->fptr_sec; | |
3440 | ||
3441 | if (!dyn_i->fptr_done) | |
3442 | { | |
3443 | dyn_i->fptr_done = 1; | |
3444 | ||
3445 | /* Fill in the function descriptor. */ | |
3446 | bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset); | |
3447 | bfd_put_64 (abfd, _bfd_get_gp_value (abfd), | |
3448 | fptr_sec->contents + dyn_i->fptr_offset + 8); | |
3449 | if (ia64_info->rel_fptr_sec) | |
3450 | { | |
3451 | Elf_Internal_Rela outrel; | |
3452 | bfd_byte *loc; | |
3453 | ||
3454 | if (bfd_little_endian (abfd)) | |
3455 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB); | |
3456 | else | |
3457 | outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB); | |
3458 | outrel.r_addend = value; | |
3459 | outrel.r_offset = (fptr_sec->output_section->vma | |
3460 | + fptr_sec->output_offset | |
3461 | + dyn_i->fptr_offset); | |
3462 | loc = ia64_info->rel_fptr_sec->contents; | |
3463 | loc += ia64_info->rel_fptr_sec->reloc_count++ | |
3464 | * sizeof (ElfNN_External_Rela); | |
3465 | bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); | |
3466 | } | |
3467 | } | |
3468 | ||
3469 | /* Return the descriptor's address. */ | |
3470 | value = (fptr_sec->output_section->vma | |
3471 | + fptr_sec->output_offset | |
3472 | + dyn_i->fptr_offset); | |
3473 | ||
3474 | return value; | |
3475 | } | |
3476 | ||
3477 | /* Fill in a PLTOFF entry consisting of the function's code address | |
3478 | and its global pointer. Return the descriptor's address. */ | |
3479 | ||
3480 | static bfd_vma | |
3481 | set_pltoff_entry (bfd *abfd, struct bfd_link_info *info, | |
3482 | struct elfNN_ia64_dyn_sym_info *dyn_i, | |
3483 | bfd_vma value, bfd_boolean is_plt) | |
3484 | { | |
3485 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3486 | asection *pltoff_sec; | |
3487 | ||
3488 | ia64_info = elfNN_ia64_hash_table (info); | |
3489 | if (ia64_info == NULL) | |
3490 | return 0; | |
3491 | ||
3492 | pltoff_sec = ia64_info->pltoff_sec; | |
3493 | ||
3494 | /* Don't do anything if this symbol uses a real PLT entry. In | |
3495 | that case, we'll fill this in during finish_dynamic_symbol. */ | |
3496 | if ((! dyn_i->want_plt || is_plt) | |
3497 | && !dyn_i->pltoff_done) | |
3498 | { | |
3499 | bfd_vma gp = _bfd_get_gp_value (abfd); | |
3500 | ||
3501 | /* Fill in the function descriptor. */ | |
3502 | bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset); | |
3503 | bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8); | |
3504 | ||
3505 | /* Install dynamic relocations if needed. */ | |
3506 | if (!is_plt | |
0e1862bb | 3507 | && bfd_link_pic (info) |
cbe79dfe | 3508 | && (!dyn_i->h |
db41f6eb L |
3509 | || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT |
3510 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h)) | |
cbe79dfe TG |
3511 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) |
3512 | { | |
3513 | unsigned int dyn_r_type; | |
3514 | ||
3515 | if (bfd_big_endian (abfd)) | |
3516 | dyn_r_type = R_IA64_RELNNMSB; | |
3517 | else | |
3518 | dyn_r_type = R_IA64_RELNNLSB; | |
3519 | ||
3520 | elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, | |
3521 | ia64_info->rel_pltoff_sec, | |
3522 | dyn_i->pltoff_offset, | |
3523 | dyn_r_type, 0, value); | |
3524 | elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, | |
3525 | ia64_info->rel_pltoff_sec, | |
3526 | dyn_i->pltoff_offset + ARCH_SIZE / 8, | |
3527 | dyn_r_type, 0, gp); | |
3528 | } | |
3529 | ||
3530 | dyn_i->pltoff_done = 1; | |
3531 | } | |
3532 | ||
3533 | /* Return the descriptor's address. */ | |
3534 | value = (pltoff_sec->output_section->vma | |
3535 | + pltoff_sec->output_offset | |
3536 | + dyn_i->pltoff_offset); | |
3537 | ||
3538 | return value; | |
3539 | } | |
3540 | ||
3541 | /* Return the base VMA address which should be subtracted from real addresses | |
3542 | when resolving @tprel() relocation. | |
3543 | Main program TLS (whose template starts at PT_TLS p_vaddr) | |
3544 | is assigned offset round(2 * size of pointer, PT_TLS p_align). */ | |
3545 | ||
3546 | static bfd_vma | |
3547 | elfNN_ia64_tprel_base (struct bfd_link_info *info) | |
3548 | { | |
3549 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
3550 | return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4, | |
3551 | tls_sec->alignment_power); | |
3552 | } | |
3553 | ||
3554 | /* Return the base VMA address which should be subtracted from real addresses | |
3555 | when resolving @dtprel() relocation. | |
3556 | This is PT_TLS segment p_vaddr. */ | |
3557 | ||
3558 | static bfd_vma | |
3559 | elfNN_ia64_dtprel_base (struct bfd_link_info *info) | |
3560 | { | |
3561 | return elf_hash_table (info)->tls_sec->vma; | |
3562 | } | |
3563 | ||
3564 | /* Called through qsort to sort the .IA_64.unwind section during a | |
3565 | non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd | |
3566 | to the output bfd so we can do proper endianness frobbing. */ | |
3567 | ||
3568 | static bfd *elfNN_ia64_unwind_entry_compare_bfd; | |
3569 | ||
3570 | static int | |
2c3fc389 | 3571 | elfNN_ia64_unwind_entry_compare (const void * a, const void * b) |
cbe79dfe TG |
3572 | { |
3573 | bfd_vma av, bv; | |
3574 | ||
3575 | av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a); | |
3576 | bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b); | |
3577 | ||
3578 | return (av < bv ? -1 : av > bv ? 1 : 0); | |
3579 | } | |
3580 | ||
3581 | /* Make sure we've got ourselves a nice fat __gp value. */ | |
3582 | static bfd_boolean | |
3583 | elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final) | |
3584 | { | |
3585 | bfd_vma min_vma = (bfd_vma) -1, max_vma = 0; | |
3586 | bfd_vma min_short_vma = min_vma, max_short_vma = 0; | |
3587 | struct elf_link_hash_entry *gp; | |
3588 | bfd_vma gp_val; | |
3589 | asection *os; | |
3590 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3591 | ||
3592 | ia64_info = elfNN_ia64_hash_table (info); | |
3593 | if (ia64_info == NULL) | |
3594 | return FALSE; | |
3595 | ||
3596 | /* Find the min and max vma of all sections marked short. Also collect | |
3597 | min and max vma of any type, for use in selecting a nice gp. */ | |
3598 | for (os = abfd->sections; os ; os = os->next) | |
3599 | { | |
3600 | bfd_vma lo, hi; | |
3601 | ||
3602 | if ((os->flags & SEC_ALLOC) == 0) | |
3603 | continue; | |
3604 | ||
3605 | lo = os->vma; | |
3606 | /* When this function is called from elfNN_ia64_final_link | |
3607 | the correct value to use is os->size. When called from | |
3608 | elfNN_ia64_relax_section we are in the middle of section | |
3609 | sizing; some sections will already have os->size set, others | |
3610 | will have os->size zero and os->rawsize the previous size. */ | |
3611 | hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size); | |
3612 | if (hi < lo) | |
3613 | hi = (bfd_vma) -1; | |
3614 | ||
3615 | if (min_vma > lo) | |
3616 | min_vma = lo; | |
3617 | if (max_vma < hi) | |
3618 | max_vma = hi; | |
3619 | if (os->flags & SEC_SMALL_DATA) | |
3620 | { | |
3621 | if (min_short_vma > lo) | |
3622 | min_short_vma = lo; | |
3623 | if (max_short_vma < hi) | |
3624 | max_short_vma = hi; | |
3625 | } | |
3626 | } | |
3627 | ||
3628 | if (ia64_info->min_short_sec) | |
3629 | { | |
d17fe7b7 | 3630 | if (min_short_vma |
cbe79dfe TG |
3631 | > (ia64_info->min_short_sec->vma |
3632 | + ia64_info->min_short_offset)) | |
3633 | min_short_vma = (ia64_info->min_short_sec->vma | |
3634 | + ia64_info->min_short_offset); | |
3635 | if (max_short_vma | |
3636 | < (ia64_info->max_short_sec->vma | |
3637 | + ia64_info->max_short_offset)) | |
3638 | max_short_vma = (ia64_info->max_short_sec->vma | |
3639 | + ia64_info->max_short_offset); | |
3640 | } | |
3641 | ||
3642 | /* See if the user wants to force a value. */ | |
3643 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
3644 | FALSE, FALSE); | |
3645 | ||
3646 | if (gp | |
3647 | && (gp->root.type == bfd_link_hash_defined | |
3648 | || gp->root.type == bfd_link_hash_defweak)) | |
3649 | { | |
3650 | asection *gp_sec = gp->root.u.def.section; | |
3651 | gp_val = (gp->root.u.def.value | |
3652 | + gp_sec->output_section->vma | |
3653 | + gp_sec->output_offset); | |
3654 | } | |
3655 | else | |
3656 | { | |
3657 | /* Pick a sensible value. */ | |
3658 | ||
3659 | if (ia64_info->min_short_sec) | |
3660 | { | |
3661 | bfd_vma short_range = max_short_vma - min_short_vma; | |
3662 | ||
3663 | /* If min_short_sec is set, pick one in the middle bewteen | |
3664 | min_short_vma and max_short_vma. */ | |
3665 | if (short_range >= 0x400000) | |
3666 | goto overflow; | |
3667 | gp_val = min_short_vma + short_range / 2; | |
3668 | } | |
3669 | else | |
3670 | { | |
3671 | asection *got_sec = ia64_info->root.sgot; | |
3672 | ||
3673 | /* Start with just the address of the .got. */ | |
3674 | if (got_sec) | |
3675 | gp_val = got_sec->output_section->vma; | |
3676 | else if (max_short_vma != 0) | |
3677 | gp_val = min_short_vma; | |
3678 | else if (max_vma - min_vma < 0x200000) | |
3679 | gp_val = min_vma; | |
3680 | else | |
3681 | gp_val = max_vma - 0x200000 + 8; | |
3682 | } | |
3683 | ||
3684 | /* If it is possible to address the entire image, but we | |
3685 | don't with the choice above, adjust. */ | |
3686 | if (max_vma - min_vma < 0x400000 | |
3687 | && (max_vma - gp_val >= 0x200000 | |
3688 | || gp_val - min_vma > 0x200000)) | |
3689 | gp_val = min_vma + 0x200000; | |
3690 | else if (max_short_vma != 0) | |
3691 | { | |
3692 | /* If we don't cover all the short data, adjust. */ | |
3693 | if (max_short_vma - gp_val >= 0x200000) | |
3694 | gp_val = min_short_vma + 0x200000; | |
3695 | ||
3696 | /* If we're addressing stuff past the end, adjust back. */ | |
3697 | if (gp_val > max_vma) | |
3698 | gp_val = max_vma - 0x200000 + 8; | |
3699 | } | |
3700 | } | |
3701 | ||
3702 | /* Validate whether all SHF_IA_64_SHORT sections are within | |
3703 | range of the chosen GP. */ | |
3704 | ||
3705 | if (max_short_vma != 0) | |
3706 | { | |
3707 | if (max_short_vma - min_short_vma >= 0x400000) | |
3708 | { | |
3709 | overflow: | |
4eca0228 | 3710 | _bfd_error_handler |
695344c0 | 3711 | /* xgettext:c-format */ |
2dcf00ce AM |
3712 | (_("%pB: short data segment overflowed (%#" PRIx64 " >= 0x400000)"), |
3713 | abfd, (uint64_t) (max_short_vma - min_short_vma)); | |
cbe79dfe TG |
3714 | return FALSE; |
3715 | } | |
3716 | else if ((gp_val > min_short_vma | |
3717 | && gp_val - min_short_vma > 0x200000) | |
3718 | || (gp_val < max_short_vma | |
3719 | && max_short_vma - gp_val >= 0x200000)) | |
3720 | { | |
4eca0228 | 3721 | _bfd_error_handler |
871b3ab2 | 3722 | (_("%pB: __gp does not cover short data segment"), abfd); |
cbe79dfe TG |
3723 | return FALSE; |
3724 | } | |
3725 | } | |
3726 | ||
3727 | _bfd_set_gp_value (abfd, gp_val); | |
3728 | ||
3729 | return TRUE; | |
3730 | } | |
3731 | ||
3732 | static bfd_boolean | |
3733 | elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info) | |
3734 | { | |
3735 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3736 | asection *unwind_output_sec; | |
3737 | ||
3738 | ia64_info = elfNN_ia64_hash_table (info); | |
3739 | if (ia64_info == NULL) | |
3740 | return FALSE; | |
3741 | ||
3742 | /* Make sure we've got ourselves a nice fat __gp value. */ | |
0e1862bb | 3743 | if (!bfd_link_relocatable (info)) |
cbe79dfe TG |
3744 | { |
3745 | bfd_vma gp_val; | |
3746 | struct elf_link_hash_entry *gp; | |
3747 | ||
3748 | /* We assume after gp is set, section size will only decrease. We | |
3749 | need to adjust gp for it. */ | |
3750 | _bfd_set_gp_value (abfd, 0); | |
3751 | if (! elfNN_ia64_choose_gp (abfd, info, TRUE)) | |
3752 | return FALSE; | |
3753 | gp_val = _bfd_get_gp_value (abfd); | |
3754 | ||
3755 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, | |
07d6d2b8 | 3756 | FALSE, FALSE); |
cbe79dfe TG |
3757 | if (gp) |
3758 | { | |
3759 | gp->root.type = bfd_link_hash_defined; | |
3760 | gp->root.u.def.value = gp_val; | |
3761 | gp->root.u.def.section = bfd_abs_section_ptr; | |
3762 | } | |
3763 | } | |
3764 | ||
3765 | /* If we're producing a final executable, we need to sort the contents | |
3766 | of the .IA_64.unwind section. Force this section to be relocated | |
3767 | into memory rather than written immediately to the output file. */ | |
3768 | unwind_output_sec = NULL; | |
0e1862bb | 3769 | if (!bfd_link_relocatable (info)) |
cbe79dfe TG |
3770 | { |
3771 | asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); | |
3772 | if (s) | |
3773 | { | |
3774 | unwind_output_sec = s->output_section; | |
3775 | unwind_output_sec->contents | |
3776 | = bfd_malloc (unwind_output_sec->size); | |
3777 | if (unwind_output_sec->contents == NULL) | |
3778 | return FALSE; | |
3779 | } | |
3780 | } | |
3781 | ||
3782 | /* Invoke the regular ELF backend linker to do all the work. */ | |
3783 | if (!bfd_elf_final_link (abfd, info)) | |
3784 | return FALSE; | |
3785 | ||
3786 | if (unwind_output_sec) | |
3787 | { | |
3788 | elfNN_ia64_unwind_entry_compare_bfd = abfd; | |
3789 | qsort (unwind_output_sec->contents, | |
3790 | (size_t) (unwind_output_sec->size / 24), | |
3791 | 24, | |
3792 | elfNN_ia64_unwind_entry_compare); | |
3793 | ||
3794 | if (! bfd_set_section_contents (abfd, unwind_output_sec, | |
3795 | unwind_output_sec->contents, (bfd_vma) 0, | |
3796 | unwind_output_sec->size)) | |
3797 | return FALSE; | |
3798 | } | |
3799 | ||
3800 | return TRUE; | |
3801 | } | |
3802 | ||
3803 | static bfd_boolean | |
3804 | elfNN_ia64_relocate_section (bfd *output_bfd, | |
3805 | struct bfd_link_info *info, | |
3806 | bfd *input_bfd, | |
3807 | asection *input_section, | |
3808 | bfd_byte *contents, | |
3809 | Elf_Internal_Rela *relocs, | |
3810 | Elf_Internal_Sym *local_syms, | |
3811 | asection **local_sections) | |
3812 | { | |
3813 | struct elfNN_ia64_link_hash_table *ia64_info; | |
3814 | Elf_Internal_Shdr *symtab_hdr; | |
3815 | Elf_Internal_Rela *rel; | |
3816 | Elf_Internal_Rela *relend; | |
3817 | asection *srel; | |
3818 | bfd_boolean ret_val = TRUE; /* for non-fatal errors */ | |
3819 | bfd_vma gp_val; | |
3820 | ||
3821 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3822 | ia64_info = elfNN_ia64_hash_table (info); | |
3823 | if (ia64_info == NULL) | |
3824 | return FALSE; | |
3825 | ||
3826 | /* Infect various flags from the input section to the output section. */ | |
0e1862bb | 3827 | if (bfd_link_relocatable (info)) |
cbe79dfe TG |
3828 | { |
3829 | bfd_vma flags; | |
3830 | ||
3831 | flags = elf_section_data(input_section)->this_hdr.sh_flags; | |
3832 | flags &= SHF_IA_64_NORECOV; | |
3833 | ||
3834 | elf_section_data(input_section->output_section) | |
3835 | ->this_hdr.sh_flags |= flags; | |
3836 | } | |
3837 | ||
3838 | gp_val = _bfd_get_gp_value (output_bfd); | |
3839 | srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE); | |
3840 | ||
3841 | rel = relocs; | |
3842 | relend = relocs + input_section->reloc_count; | |
3843 | for (; rel < relend; ++rel) | |
3844 | { | |
3845 | struct elf_link_hash_entry *h; | |
3846 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
3847 | bfd_reloc_status_type r; | |
3848 | reloc_howto_type *howto; | |
3849 | unsigned long r_symndx; | |
3850 | Elf_Internal_Sym *sym; | |
3851 | unsigned int r_type; | |
3852 | bfd_vma value; | |
3853 | asection *sym_sec; | |
3854 | bfd_byte *hit_addr; | |
3855 | bfd_boolean dynamic_symbol_p; | |
3856 | bfd_boolean undef_weak_ref; | |
3857 | ||
3858 | r_type = ELFNN_R_TYPE (rel->r_info); | |
3859 | if (r_type > R_IA64_MAX_RELOC_CODE) | |
3860 | { | |
0aa13fee AM |
3861 | /* xgettext:c-format */ |
3862 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
3863 | input_bfd, (int) r_type); | |
cbe79dfe TG |
3864 | bfd_set_error (bfd_error_bad_value); |
3865 | ret_val = FALSE; | |
3866 | continue; | |
3867 | } | |
3868 | ||
3869 | howto = ia64_elf_lookup_howto (r_type); | |
f3185997 NC |
3870 | if (howto == NULL) |
3871 | { | |
3872 | ret_val = FALSE; | |
3873 | continue; | |
3874 | } | |
3875 | ||
cbe79dfe TG |
3876 | r_symndx = ELFNN_R_SYM (rel->r_info); |
3877 | h = NULL; | |
3878 | sym = NULL; | |
3879 | sym_sec = NULL; | |
3880 | undef_weak_ref = FALSE; | |
3881 | ||
3882 | if (r_symndx < symtab_hdr->sh_info) | |
3883 | { | |
3884 | /* Reloc against local symbol. */ | |
3885 | asection *msec; | |
3886 | sym = local_syms + r_symndx; | |
3887 | sym_sec = local_sections[r_symndx]; | |
3888 | msec = sym_sec; | |
3889 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
0e1862bb | 3890 | if (!bfd_link_relocatable (info) |
cbe79dfe TG |
3891 | && (sym_sec->flags & SEC_MERGE) != 0 |
3892 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
dbaa2011 | 3893 | && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE) |
d17fe7b7 | 3894 | { |
cbe79dfe TG |
3895 | struct elfNN_ia64_local_hash_entry *loc_h; |
3896 | ||
3897 | loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE); | |
3898 | if (loc_h && ! loc_h->sec_merge_done) | |
3899 | { | |
3900 | struct elfNN_ia64_dyn_sym_info *dynent; | |
3901 | unsigned int count; | |
3902 | ||
3903 | for (count = loc_h->count, dynent = loc_h->info; | |
3904 | count != 0; | |
3905 | count--, dynent++) | |
3906 | { | |
3907 | msec = sym_sec; | |
3908 | dynent->addend = | |
3909 | _bfd_merged_section_offset (output_bfd, &msec, | |
3910 | elf_section_data (msec)-> | |
3911 | sec_info, | |
3912 | sym->st_value | |
3913 | + dynent->addend); | |
3914 | dynent->addend -= sym->st_value; | |
3915 | dynent->addend += msec->output_section->vma | |
3916 | + msec->output_offset | |
3917 | - sym_sec->output_section->vma | |
3918 | - sym_sec->output_offset; | |
3919 | } | |
3920 | ||
3921 | /* We may have introduced duplicated entries. We need | |
3922 | to remove them properly. */ | |
3923 | count = sort_dyn_sym_info (loc_h->info, loc_h->count); | |
3924 | if (count != loc_h->count) | |
3925 | { | |
3926 | loc_h->count = count; | |
3927 | loc_h->sorted_count = count; | |
3928 | } | |
3929 | ||
3930 | loc_h->sec_merge_done = 1; | |
3931 | } | |
3932 | } | |
3933 | } | |
3934 | else | |
3935 | { | |
3936 | bfd_boolean unresolved_reloc; | |
62d887d4 | 3937 | bfd_boolean warned, ignored; |
cbe79dfe TG |
3938 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
3939 | ||
3940 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
3941 | r_symndx, symtab_hdr, sym_hashes, | |
3942 | h, sym_sec, value, | |
62d887d4 | 3943 | unresolved_reloc, warned, ignored); |
cbe79dfe TG |
3944 | |
3945 | if (h->root.type == bfd_link_hash_undefweak) | |
3946 | undef_weak_ref = TRUE; | |
0e1862bb | 3947 | else if (warned || (ignored && bfd_link_executable (info))) |
cbe79dfe TG |
3948 | continue; |
3949 | } | |
3950 | ||
dbaa2011 | 3951 | if (sym_sec != NULL && discarded_section (sym_sec)) |
cbe79dfe | 3952 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3953 | rel, 1, relend, howto, 0, contents); |
cbe79dfe | 3954 | |
0e1862bb | 3955 | if (bfd_link_relocatable (info)) |
cbe79dfe TG |
3956 | continue; |
3957 | ||
3958 | hit_addr = contents + rel->r_offset; | |
3959 | value += rel->r_addend; | |
3960 | dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type); | |
3961 | ||
3962 | switch (r_type) | |
3963 | { | |
3964 | case R_IA64_NONE: | |
3965 | case R_IA64_LDXMOV: | |
3966 | continue; | |
3967 | ||
3968 | case R_IA64_IMM14: | |
3969 | case R_IA64_IMM22: | |
3970 | case R_IA64_IMM64: | |
3971 | case R_IA64_DIR32MSB: | |
3972 | case R_IA64_DIR32LSB: | |
3973 | case R_IA64_DIR64MSB: | |
3974 | case R_IA64_DIR64LSB: | |
3975 | /* Install a dynamic relocation for this reloc. */ | |
0e1862bb | 3976 | if ((dynamic_symbol_p || bfd_link_pic (info)) |
db41f6eb | 3977 | && !(h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
cbe79dfe TG |
3978 | && r_symndx != STN_UNDEF |
3979 | && (input_section->flags & SEC_ALLOC) != 0) | |
3980 | { | |
3981 | unsigned int dyn_r_type; | |
3982 | long dynindx; | |
3983 | bfd_vma addend; | |
3984 | ||
3985 | BFD_ASSERT (srel != NULL); | |
3986 | ||
3987 | switch (r_type) | |
3988 | { | |
3989 | case R_IA64_IMM14: | |
3990 | case R_IA64_IMM22: | |
3991 | case R_IA64_IMM64: | |
3992 | /* ??? People shouldn't be doing non-pic code in | |
3993 | shared libraries nor dynamic executables. */ | |
4eca0228 | 3994 | _bfd_error_handler |
695344c0 | 3995 | /* xgettext:c-format */ |
871b3ab2 | 3996 | (_("%pB: non-pic code with imm relocation against dynamic symbol `%s'"), |
cbe79dfe TG |
3997 | input_bfd, |
3998 | h ? h->root.root.string | |
3999 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4000 | sym_sec)); | |
4001 | ret_val = FALSE; | |
4002 | continue; | |
4003 | ||
4004 | default: | |
4005 | break; | |
4006 | } | |
4007 | ||
4008 | /* If we don't need dynamic symbol lookup, find a | |
4009 | matching RELATIVE relocation. */ | |
4010 | dyn_r_type = r_type; | |
4011 | if (dynamic_symbol_p) | |
4012 | { | |
4013 | dynindx = h->dynindx; | |
4014 | addend = rel->r_addend; | |
4015 | value = 0; | |
4016 | } | |
4017 | else | |
4018 | { | |
4019 | switch (r_type) | |
4020 | { | |
4021 | case R_IA64_DIR32MSB: | |
4022 | dyn_r_type = R_IA64_REL32MSB; | |
4023 | break; | |
4024 | case R_IA64_DIR32LSB: | |
4025 | dyn_r_type = R_IA64_REL32LSB; | |
4026 | break; | |
4027 | case R_IA64_DIR64MSB: | |
4028 | dyn_r_type = R_IA64_REL64MSB; | |
4029 | break; | |
4030 | case R_IA64_DIR64LSB: | |
4031 | dyn_r_type = R_IA64_REL64LSB; | |
4032 | break; | |
4033 | ||
4034 | default: | |
4035 | break; | |
4036 | } | |
4037 | dynindx = 0; | |
4038 | addend = value; | |
4039 | } | |
4040 | ||
4041 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4042 | srel, rel->r_offset, dyn_r_type, | |
4043 | dynindx, addend); | |
4044 | } | |
4045 | /* Fall through. */ | |
4046 | ||
4047 | case R_IA64_LTV32MSB: | |
4048 | case R_IA64_LTV32LSB: | |
4049 | case R_IA64_LTV64MSB: | |
4050 | case R_IA64_LTV64LSB: | |
4051 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4052 | break; | |
4053 | ||
4054 | case R_IA64_GPREL22: | |
4055 | case R_IA64_GPREL64I: | |
4056 | case R_IA64_GPREL32MSB: | |
4057 | case R_IA64_GPREL32LSB: | |
4058 | case R_IA64_GPREL64MSB: | |
4059 | case R_IA64_GPREL64LSB: | |
4060 | if (dynamic_symbol_p) | |
4061 | { | |
4eca0228 | 4062 | _bfd_error_handler |
695344c0 | 4063 | /* xgettext:c-format */ |
871b3ab2 | 4064 | (_("%pB: @gprel relocation against dynamic symbol %s"), |
cbe79dfe TG |
4065 | input_bfd, |
4066 | h ? h->root.root.string | |
4067 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4068 | sym_sec)); | |
4069 | ret_val = FALSE; | |
4070 | continue; | |
4071 | } | |
4072 | value -= gp_val; | |
4073 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4074 | break; | |
4075 | ||
4076 | case R_IA64_LTOFF22: | |
4077 | case R_IA64_LTOFF22X: | |
4078 | case R_IA64_LTOFF64I: | |
07d6d2b8 | 4079 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
cbe79dfe TG |
4080 | value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1), |
4081 | rel->r_addend, value, R_IA64_DIRNNLSB); | |
4082 | value -= gp_val; | |
4083 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4084 | break; | |
4085 | ||
4086 | case R_IA64_PLTOFF22: | |
4087 | case R_IA64_PLTOFF64I: | |
4088 | case R_IA64_PLTOFF64MSB: | |
4089 | case R_IA64_PLTOFF64LSB: | |
07d6d2b8 | 4090 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
cbe79dfe TG |
4091 | value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE); |
4092 | value -= gp_val; | |
4093 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4094 | break; | |
4095 | ||
4096 | case R_IA64_FPTR64I: | |
4097 | case R_IA64_FPTR32MSB: | |
4098 | case R_IA64_FPTR32LSB: | |
4099 | case R_IA64_FPTR64MSB: | |
4100 | case R_IA64_FPTR64LSB: | |
07d6d2b8 | 4101 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
cbe79dfe TG |
4102 | if (dyn_i->want_fptr) |
4103 | { | |
4104 | if (!undef_weak_ref) | |
4105 | value = set_fptr_entry (output_bfd, info, dyn_i, value); | |
4106 | } | |
0e1862bb | 4107 | if (!dyn_i->want_fptr || bfd_link_pie (info)) |
cbe79dfe TG |
4108 | { |
4109 | long dynindx; | |
4110 | unsigned int dyn_r_type = r_type; | |
4111 | bfd_vma addend = rel->r_addend; | |
4112 | ||
4113 | /* Otherwise, we expect the dynamic linker to create | |
4114 | the entry. */ | |
4115 | ||
4116 | if (dyn_i->want_fptr) | |
4117 | { | |
4118 | if (r_type == R_IA64_FPTR64I) | |
4119 | { | |
4120 | /* We can't represent this without a dynamic symbol. | |
4121 | Adjust the relocation to be against an output | |
4122 | section symbol, which are always present in the | |
4123 | dynamic symbol table. */ | |
4124 | /* ??? People shouldn't be doing non-pic code in | |
4125 | shared libraries. Hork. */ | |
4eca0228 | 4126 | _bfd_error_handler |
871b3ab2 | 4127 | (_("%pB: linking non-pic code in a position independent executable"), |
cbe79dfe TG |
4128 | input_bfd); |
4129 | ret_val = FALSE; | |
4130 | continue; | |
4131 | } | |
4132 | dynindx = 0; | |
4133 | addend = value; | |
4134 | dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB; | |
4135 | } | |
4136 | else if (h) | |
4137 | { | |
4138 | if (h->dynindx != -1) | |
4139 | dynindx = h->dynindx; | |
4140 | else | |
4141 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4142 | (info, h->root.u.def.section->owner, | |
4143 | global_sym_index (h))); | |
4144 | value = 0; | |
4145 | } | |
4146 | else | |
4147 | { | |
4148 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4149 | (info, input_bfd, (long) r_symndx)); | |
4150 | value = 0; | |
4151 | } | |
4152 | ||
4153 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4154 | srel, rel->r_offset, dyn_r_type, | |
4155 | dynindx, addend); | |
4156 | } | |
4157 | ||
4158 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4159 | break; | |
4160 | ||
4161 | case R_IA64_LTOFF_FPTR22: | |
4162 | case R_IA64_LTOFF_FPTR64I: | |
4163 | case R_IA64_LTOFF_FPTR32MSB: | |
4164 | case R_IA64_LTOFF_FPTR32LSB: | |
4165 | case R_IA64_LTOFF_FPTR64MSB: | |
4166 | case R_IA64_LTOFF_FPTR64LSB: | |
4167 | { | |
4168 | long dynindx; | |
4169 | ||
4170 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4171 | if (dyn_i->want_fptr) | |
4172 | { | |
4173 | BFD_ASSERT (h == NULL || h->dynindx == -1); | |
07d6d2b8 AM |
4174 | if (!undef_weak_ref) |
4175 | value = set_fptr_entry (output_bfd, info, dyn_i, value); | |
cbe79dfe TG |
4176 | dynindx = -1; |
4177 | } | |
4178 | else | |
4179 | { | |
07d6d2b8 | 4180 | /* Otherwise, we expect the dynamic linker to create |
cbe79dfe | 4181 | the entry. */ |
07d6d2b8 | 4182 | if (h) |
cbe79dfe TG |
4183 | { |
4184 | if (h->dynindx != -1) | |
4185 | dynindx = h->dynindx; | |
4186 | else | |
4187 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4188 | (info, h->root.u.def.section->owner, | |
4189 | global_sym_index (h))); | |
4190 | } | |
4191 | else | |
4192 | dynindx = (_bfd_elf_link_lookup_local_dynindx | |
4193 | (info, input_bfd, (long) r_symndx)); | |
4194 | value = 0; | |
4195 | } | |
4196 | ||
4197 | value = set_got_entry (output_bfd, info, dyn_i, dynindx, | |
4198 | rel->r_addend, value, R_IA64_FPTRNNLSB); | |
4199 | value -= gp_val; | |
4200 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4201 | } | |
4202 | break; | |
4203 | ||
4204 | case R_IA64_PCREL32MSB: | |
4205 | case R_IA64_PCREL32LSB: | |
4206 | case R_IA64_PCREL64MSB: | |
4207 | case R_IA64_PCREL64LSB: | |
4208 | /* Install a dynamic relocation for this reloc. */ | |
4209 | if (dynamic_symbol_p && r_symndx != STN_UNDEF) | |
4210 | { | |
4211 | BFD_ASSERT (srel != NULL); | |
4212 | ||
4213 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4214 | srel, rel->r_offset, r_type, | |
4215 | h->dynindx, rel->r_addend); | |
4216 | } | |
4217 | goto finish_pcrel; | |
4218 | ||
4219 | case R_IA64_PCREL21B: | |
4220 | case R_IA64_PCREL60B: | |
4221 | /* We should have created a PLT entry for any dynamic symbol. */ | |
4222 | dyn_i = NULL; | |
4223 | if (h) | |
4224 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); | |
4225 | ||
4226 | if (dyn_i && dyn_i->want_plt2) | |
4227 | { | |
4228 | /* Should have caught this earlier. */ | |
4229 | BFD_ASSERT (rel->r_addend == 0); | |
4230 | ||
4231 | value = (ia64_info->root.splt->output_section->vma | |
4232 | + ia64_info->root.splt->output_offset | |
4233 | + dyn_i->plt2_offset); | |
4234 | } | |
4235 | else | |
4236 | { | |
4237 | /* Since there's no PLT entry, Validate that this is | |
4238 | locally defined. */ | |
4239 | BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL); | |
4240 | ||
4241 | /* If the symbol is undef_weak, we shouldn't be trying | |
4242 | to call it. There's every chance that we'd wind up | |
4243 | with an out-of-range fixup here. Don't bother setting | |
4244 | any value at all. */ | |
4245 | if (undef_weak_ref) | |
4246 | continue; | |
4247 | } | |
4248 | goto finish_pcrel; | |
4249 | ||
4250 | case R_IA64_PCREL21BI: | |
4251 | case R_IA64_PCREL21F: | |
4252 | case R_IA64_PCREL21M: | |
4253 | case R_IA64_PCREL22: | |
4254 | case R_IA64_PCREL64I: | |
4255 | /* The PCREL21BI reloc is specifically not intended for use with | |
4256 | dynamic relocs. PCREL21F and PCREL21M are used for speculation | |
4257 | fixup code, and thus probably ought not be dynamic. The | |
4258 | PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */ | |
4259 | if (dynamic_symbol_p) | |
4260 | { | |
4261 | const char *msg; | |
4262 | ||
4263 | if (r_type == R_IA64_PCREL21BI) | |
695344c0 | 4264 | /* xgettext:c-format */ |
871b3ab2 | 4265 | msg = _("%pB: @internal branch to dynamic symbol %s"); |
cbe79dfe | 4266 | else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M) |
695344c0 | 4267 | /* xgettext:c-format */ |
871b3ab2 | 4268 | msg = _("%pB: speculation fixup to dynamic symbol %s"); |
cbe79dfe | 4269 | else |
695344c0 | 4270 | /* xgettext:c-format */ |
871b3ab2 | 4271 | msg = _("%pB: @pcrel relocation against dynamic symbol %s"); |
4eca0228 AM |
4272 | _bfd_error_handler (msg, input_bfd, |
4273 | h ? h->root.root.string | |
4274 | : bfd_elf_sym_name (input_bfd, | |
4275 | symtab_hdr, | |
4276 | sym, | |
4277 | sym_sec)); | |
cbe79dfe TG |
4278 | ret_val = FALSE; |
4279 | continue; | |
4280 | } | |
4281 | goto finish_pcrel; | |
4282 | ||
4283 | finish_pcrel: | |
4284 | /* Make pc-relative. */ | |
4285 | value -= (input_section->output_section->vma | |
4286 | + input_section->output_offset | |
4287 | + rel->r_offset) & ~ (bfd_vma) 0x3; | |
4288 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4289 | break; | |
4290 | ||
4291 | case R_IA64_SEGREL32MSB: | |
4292 | case R_IA64_SEGREL32LSB: | |
4293 | case R_IA64_SEGREL64MSB: | |
4294 | case R_IA64_SEGREL64LSB: | |
4295 | { | |
4296 | /* Find the segment that contains the output_section. */ | |
4297 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section | |
4298 | (output_bfd, input_section->output_section); | |
4299 | ||
4300 | if (p == NULL) | |
4301 | { | |
4302 | r = bfd_reloc_notsupported; | |
4303 | } | |
4304 | else | |
4305 | { | |
4306 | /* The VMA of the segment is the vaddr of the associated | |
4307 | program header. */ | |
4308 | if (value > p->p_vaddr) | |
4309 | value -= p->p_vaddr; | |
4310 | else | |
4311 | value = 0; | |
4312 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4313 | } | |
4314 | break; | |
4315 | } | |
4316 | ||
4317 | case R_IA64_SECREL32MSB: | |
4318 | case R_IA64_SECREL32LSB: | |
4319 | case R_IA64_SECREL64MSB: | |
4320 | case R_IA64_SECREL64LSB: | |
4321 | /* Make output-section relative to section where the symbol | |
4322 | is defined. PR 475 */ | |
4323 | if (sym_sec) | |
4324 | value -= sym_sec->output_section->vma; | |
4325 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4326 | break; | |
4327 | ||
4328 | case R_IA64_IPLTMSB: | |
4329 | case R_IA64_IPLTLSB: | |
4330 | /* Install a dynamic relocation for this reloc. */ | |
0e1862bb | 4331 | if ((dynamic_symbol_p || bfd_link_pic (info)) |
cbe79dfe TG |
4332 | && (input_section->flags & SEC_ALLOC) != 0) |
4333 | { | |
4334 | BFD_ASSERT (srel != NULL); | |
4335 | ||
4336 | /* If we don't need dynamic symbol lookup, install two | |
4337 | RELATIVE relocations. */ | |
4338 | if (!dynamic_symbol_p) | |
4339 | { | |
4340 | unsigned int dyn_r_type; | |
4341 | ||
4342 | if (r_type == R_IA64_IPLTMSB) | |
4343 | dyn_r_type = R_IA64_REL64MSB; | |
4344 | else | |
4345 | dyn_r_type = R_IA64_REL64LSB; | |
4346 | ||
4347 | elfNN_ia64_install_dyn_reloc (output_bfd, info, | |
4348 | input_section, | |
4349 | srel, rel->r_offset, | |
4350 | dyn_r_type, 0, value); | |
4351 | elfNN_ia64_install_dyn_reloc (output_bfd, info, | |
4352 | input_section, | |
4353 | srel, rel->r_offset + 8, | |
4354 | dyn_r_type, 0, gp_val); | |
4355 | } | |
4356 | else | |
4357 | elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, | |
4358 | srel, rel->r_offset, r_type, | |
4359 | h->dynindx, rel->r_addend); | |
4360 | } | |
4361 | ||
4362 | if (r_type == R_IA64_IPLTMSB) | |
4363 | r_type = R_IA64_DIR64MSB; | |
4364 | else | |
4365 | r_type = R_IA64_DIR64LSB; | |
4366 | ia64_elf_install_value (hit_addr, value, r_type); | |
4367 | r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type); | |
4368 | break; | |
4369 | ||
4370 | case R_IA64_TPREL14: | |
4371 | case R_IA64_TPREL22: | |
4372 | case R_IA64_TPREL64I: | |
4373 | if (elf_hash_table (info)->tls_sec == NULL) | |
4374 | goto missing_tls_sec; | |
4375 | value -= elfNN_ia64_tprel_base (info); | |
4376 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4377 | break; | |
4378 | ||
4379 | case R_IA64_DTPREL14: | |
4380 | case R_IA64_DTPREL22: | |
4381 | case R_IA64_DTPREL64I: | |
4382 | case R_IA64_DTPREL32LSB: | |
4383 | case R_IA64_DTPREL32MSB: | |
4384 | case R_IA64_DTPREL64LSB: | |
4385 | case R_IA64_DTPREL64MSB: | |
4386 | if (elf_hash_table (info)->tls_sec == NULL) | |
4387 | goto missing_tls_sec; | |
4388 | value -= elfNN_ia64_dtprel_base (info); | |
4389 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4390 | break; | |
4391 | ||
4392 | case R_IA64_LTOFF_TPREL22: | |
4393 | case R_IA64_LTOFF_DTPMOD22: | |
4394 | case R_IA64_LTOFF_DTPREL22: | |
4395 | { | |
4396 | int got_r_type; | |
4397 | long dynindx = h ? h->dynindx : -1; | |
4398 | bfd_vma r_addend = rel->r_addend; | |
4399 | ||
4400 | switch (r_type) | |
4401 | { | |
4402 | default: | |
4403 | case R_IA64_LTOFF_TPREL22: | |
4404 | if (!dynamic_symbol_p) | |
4405 | { | |
4406 | if (elf_hash_table (info)->tls_sec == NULL) | |
4407 | goto missing_tls_sec; | |
0e1862bb | 4408 | if (!bfd_link_pic (info)) |
cbe79dfe TG |
4409 | value -= elfNN_ia64_tprel_base (info); |
4410 | else | |
4411 | { | |
4412 | r_addend += value - elfNN_ia64_dtprel_base (info); | |
4413 | dynindx = 0; | |
4414 | } | |
4415 | } | |
4416 | got_r_type = R_IA64_TPREL64LSB; | |
4417 | break; | |
4418 | case R_IA64_LTOFF_DTPMOD22: | |
0e1862bb | 4419 | if (!dynamic_symbol_p && !bfd_link_pic (info)) |
cbe79dfe TG |
4420 | value = 1; |
4421 | got_r_type = R_IA64_DTPMOD64LSB; | |
4422 | break; | |
4423 | case R_IA64_LTOFF_DTPREL22: | |
4424 | if (!dynamic_symbol_p) | |
4425 | { | |
4426 | if (elf_hash_table (info)->tls_sec == NULL) | |
4427 | goto missing_tls_sec; | |
4428 | value -= elfNN_ia64_dtprel_base (info); | |
4429 | } | |
4430 | got_r_type = R_IA64_DTPRELNNLSB; | |
4431 | break; | |
4432 | } | |
4433 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); | |
4434 | value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend, | |
4435 | value, got_r_type); | |
4436 | value -= gp_val; | |
4437 | r = ia64_elf_install_value (hit_addr, value, r_type); | |
4438 | } | |
4439 | break; | |
4440 | ||
4441 | default: | |
4442 | r = bfd_reloc_notsupported; | |
4443 | break; | |
4444 | } | |
4445 | ||
4446 | switch (r) | |
4447 | { | |
4448 | case bfd_reloc_ok: | |
4449 | break; | |
4450 | ||
4451 | case bfd_reloc_undefined: | |
4452 | /* This can happen for global table relative relocs if | |
4453 | __gp is undefined. This is a panic situation so we | |
4454 | don't try to continue. */ | |
4455 | (*info->callbacks->undefined_symbol) | |
4456 | (info, "__gp", input_bfd, input_section, rel->r_offset, 1); | |
4457 | return FALSE; | |
4458 | ||
4459 | case bfd_reloc_notsupported: | |
4460 | { | |
4461 | const char *name; | |
4462 | ||
4463 | if (h) | |
4464 | name = h->root.root.string; | |
4465 | else | |
4466 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4467 | sym_sec); | |
1a72702b AM |
4468 | (*info->callbacks->warning) (info, _("unsupported reloc"), |
4469 | name, input_bfd, | |
4470 | input_section, rel->r_offset); | |
cbe79dfe TG |
4471 | ret_val = FALSE; |
4472 | } | |
4473 | break; | |
4474 | ||
4475 | case bfd_reloc_dangerous: | |
4476 | case bfd_reloc_outofrange: | |
4477 | case bfd_reloc_overflow: | |
4478 | default: | |
4479 | missing_tls_sec: | |
4480 | { | |
4481 | const char *name; | |
4482 | ||
4483 | if (h) | |
4484 | name = h->root.root.string; | |
4485 | else | |
4486 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4487 | sym_sec); | |
4488 | ||
4489 | switch (r_type) | |
4490 | { | |
4491 | case R_IA64_TPREL14: | |
4492 | case R_IA64_TPREL22: | |
4493 | case R_IA64_TPREL64I: | |
4494 | case R_IA64_DTPREL14: | |
4495 | case R_IA64_DTPREL22: | |
4496 | case R_IA64_DTPREL64I: | |
4497 | case R_IA64_DTPREL32LSB: | |
4498 | case R_IA64_DTPREL32MSB: | |
4499 | case R_IA64_DTPREL64LSB: | |
4500 | case R_IA64_DTPREL64MSB: | |
4501 | case R_IA64_LTOFF_TPREL22: | |
4502 | case R_IA64_LTOFF_DTPMOD22: | |
4503 | case R_IA64_LTOFF_DTPREL22: | |
4eca0228 | 4504 | _bfd_error_handler |
695344c0 | 4505 | /* xgettext:c-format */ |
871b3ab2 | 4506 | (_("%pB: missing TLS section for relocation %s against `%s'" |
2dcf00ce | 4507 | " at %#" PRIx64 " in section `%pA'."), |
c08bb8dd | 4508 | input_bfd, howto->name, name, |
2dcf00ce | 4509 | (uint64_t) rel->r_offset, input_section); |
cbe79dfe TG |
4510 | break; |
4511 | ||
4512 | case R_IA64_PCREL21B: | |
4513 | case R_IA64_PCREL21BI: | |
4514 | case R_IA64_PCREL21M: | |
4515 | case R_IA64_PCREL21F: | |
4516 | if (is_elf_hash_table (info->hash)) | |
4517 | { | |
4518 | /* Relaxtion is always performed for ELF output. | |
4519 | Overflow failures for those relocations mean | |
4520 | that the section is too big to relax. */ | |
4eca0228 | 4521 | _bfd_error_handler |
695344c0 | 4522 | /* xgettext:c-format */ |
2dcf00ce AM |
4523 | (_("%pB: Can't relax br (%s) to `%s' at %#" PRIx64 |
4524 | " in section `%pA' with size %#" PRIx64 | |
4525 | " (> 0x1000000)."), | |
4526 | input_bfd, howto->name, name, (uint64_t) rel->r_offset, | |
4527 | input_section, (uint64_t) input_section->size); | |
cbe79dfe TG |
4528 | break; |
4529 | } | |
1a0670f3 | 4530 | /* Fall through. */ |
cbe79dfe | 4531 | default: |
1a72702b AM |
4532 | (*info->callbacks->reloc_overflow) (info, |
4533 | &h->root, | |
4534 | name, | |
4535 | howto->name, | |
4536 | (bfd_vma) 0, | |
4537 | input_bfd, | |
4538 | input_section, | |
4539 | rel->r_offset); | |
cbe79dfe TG |
4540 | break; |
4541 | } | |
4542 | ||
4543 | ret_val = FALSE; | |
4544 | } | |
4545 | break; | |
4546 | } | |
4547 | } | |
4548 | ||
4549 | return ret_val; | |
4550 | } | |
4551 | ||
4552 | static bfd_boolean | |
4553 | elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd, | |
4554 | struct bfd_link_info *info, | |
4555 | struct elf_link_hash_entry *h, | |
4556 | Elf_Internal_Sym *sym) | |
4557 | { | |
4558 | struct elfNN_ia64_link_hash_table *ia64_info; | |
4559 | struct elfNN_ia64_dyn_sym_info *dyn_i; | |
4560 | ||
4561 | ia64_info = elfNN_ia64_hash_table (info); | |
4562 | if (ia64_info == NULL) | |
4563 | return FALSE; | |
4564 | ||
4565 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); | |
4566 | ||
4567 | /* Fill in the PLT data, if required. */ | |
4568 | if (dyn_i && dyn_i->want_plt) | |
4569 | { | |
4570 | Elf_Internal_Rela outrel; | |
4571 | bfd_byte *loc; | |
4572 | asection *plt_sec; | |
4573 | bfd_vma plt_addr, pltoff_addr, gp_val, plt_index; | |
4574 | ||
4575 | gp_val = _bfd_get_gp_value (output_bfd); | |
4576 | ||
4577 | /* Initialize the minimal PLT entry. */ | |
4578 | ||
4579 | plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; | |
4580 | plt_sec = ia64_info->root.splt; | |
4581 | loc = plt_sec->contents + dyn_i->plt_offset; | |
4582 | ||
4583 | memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE); | |
4584 | ia64_elf_install_value (loc, plt_index, R_IA64_IMM22); | |
4585 | ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B); | |
4586 | ||
4587 | plt_addr = (plt_sec->output_section->vma | |
4588 | + plt_sec->output_offset | |
4589 | + dyn_i->plt_offset); | |
4590 | pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE); | |
4591 | ||
4592 | /* Initialize the FULL PLT entry, if needed. */ | |
4593 | if (dyn_i->want_plt2) | |
4594 | { | |
4595 | loc = plt_sec->contents + dyn_i->plt2_offset; | |
4596 | ||
4597 | memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); | |
4598 | ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22); | |
4599 | ||
4600 | /* Mark the symbol as undefined, rather than as defined in the | |
4601 | plt section. Leave the value alone. */ | |
4602 | /* ??? We didn't redefine it in adjust_dynamic_symbol in the | |
4603 | first place. But perhaps elflink.c did some for us. */ | |
4604 | if (!h->def_regular) | |
4605 | sym->st_shndx = SHN_UNDEF; | |
4606 | } | |
4607 | ||
4608 | /* Create the dynamic relocation. */ | |
4609 | outrel.r_offset = pltoff_addr; | |
4610 | if (bfd_little_endian (output_bfd)) | |
4611 | outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB); | |
4612 | else | |
4613 | outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB); | |
4614 | outrel.r_addend = 0; | |
4615 | ||
4616 | /* This is fun. In the .IA_64.pltoff section, we've got entries | |
4617 | that correspond both to real PLT entries, and those that | |
4618 | happened to resolve to local symbols but need to be created | |
4619 | to satisfy @pltoff relocations. The .rela.IA_64.pltoff | |
4620 | relocations for the real PLT should come at the end of the | |
4621 | section, so that they can be indexed by plt entry at runtime. | |
4622 | ||
4623 | We emitted all of the relocations for the non-PLT @pltoff | |
4624 | entries during relocate_section. So we can consider the | |
4625 | existing sec->reloc_count to be the base of the array of | |
4626 | PLT relocations. */ | |
4627 | ||
4628 | loc = ia64_info->rel_pltoff_sec->contents; | |
4629 | loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index) | |
4630 | * sizeof (ElfNN_External_Rela)); | |
4631 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); | |
4632 | } | |
4633 | ||
4634 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 4635 | if (h == ia64_info->root.hdynamic |
cbe79dfe TG |
4636 | || h == ia64_info->root.hgot |
4637 | || h == ia64_info->root.hplt) | |
4638 | sym->st_shndx = SHN_ABS; | |
4639 | ||
4640 | return TRUE; | |
4641 | } | |
4642 | ||
4643 | static bfd_boolean | |
4644 | elfNN_ia64_finish_dynamic_sections (bfd *abfd, | |
4645 | struct bfd_link_info *info) | |
4646 | { | |
4647 | struct elfNN_ia64_link_hash_table *ia64_info; | |
4648 | bfd *dynobj; | |
4649 | ||
4650 | ia64_info = elfNN_ia64_hash_table (info); | |
4651 | if (ia64_info == NULL) | |
4652 | return FALSE; | |
4653 | ||
4654 | dynobj = ia64_info->root.dynobj; | |
4655 | ||
ce558b89 | 4656 | if (ia64_info->root.dynamic_sections_created) |
cbe79dfe TG |
4657 | { |
4658 | ElfNN_External_Dyn *dyncon, *dynconend; | |
4659 | asection *sdyn, *sgotplt; | |
4660 | bfd_vma gp_val; | |
4661 | ||
3d4d4302 | 4662 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
ce558b89 | 4663 | sgotplt = ia64_info->root.sgotplt; |
cbe79dfe TG |
4664 | BFD_ASSERT (sdyn != NULL); |
4665 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; | |
4666 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
4667 | ||
4668 | gp_val = _bfd_get_gp_value (abfd); | |
4669 | ||
4670 | for (; dyncon < dynconend; dyncon++) | |
4671 | { | |
4672 | Elf_Internal_Dyn dyn; | |
4673 | ||
4674 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); | |
4675 | ||
4676 | switch (dyn.d_tag) | |
4677 | { | |
4678 | case DT_PLTGOT: | |
4679 | dyn.d_un.d_ptr = gp_val; | |
4680 | break; | |
4681 | ||
4682 | case DT_PLTRELSZ: | |
4683 | dyn.d_un.d_val = (ia64_info->minplt_entries | |
4684 | * sizeof (ElfNN_External_Rela)); | |
4685 | break; | |
4686 | ||
4687 | case DT_JMPREL: | |
4688 | /* See the comment above in finish_dynamic_symbol. */ | |
4689 | dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma | |
4690 | + ia64_info->rel_pltoff_sec->output_offset | |
4691 | + (ia64_info->rel_pltoff_sec->reloc_count | |
4692 | * sizeof (ElfNN_External_Rela))); | |
4693 | break; | |
4694 | ||
4695 | case DT_IA_64_PLT_RESERVE: | |
4696 | dyn.d_un.d_ptr = (sgotplt->output_section->vma | |
4697 | + sgotplt->output_offset); | |
4698 | break; | |
cbe79dfe TG |
4699 | } |
4700 | ||
4701 | bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon); | |
4702 | } | |
4703 | ||
4704 | /* Initialize the PLT0 entry. */ | |
4705 | if (ia64_info->root.splt) | |
4706 | { | |
4707 | bfd_byte *loc = ia64_info->root.splt->contents; | |
4708 | bfd_vma pltres; | |
4709 | ||
4710 | memcpy (loc, plt_header, PLT_HEADER_SIZE); | |
4711 | ||
4712 | pltres = (sgotplt->output_section->vma | |
4713 | + sgotplt->output_offset | |
4714 | - gp_val); | |
4715 | ||
4716 | ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22); | |
4717 | } | |
4718 | } | |
4719 | ||
4720 | return TRUE; | |
4721 | } | |
4722 | \f | |
4723 | /* ELF file flag handling: */ | |
4724 | ||
4725 | /* Function to keep IA-64 specific file flags. */ | |
4726 | static bfd_boolean | |
4727 | elfNN_ia64_set_private_flags (bfd *abfd, flagword flags) | |
4728 | { | |
4729 | BFD_ASSERT (!elf_flags_init (abfd) | |
4730 | || elf_elfheader (abfd)->e_flags == flags); | |
4731 | ||
4732 | elf_elfheader (abfd)->e_flags = flags; | |
4733 | elf_flags_init (abfd) = TRUE; | |
4734 | return TRUE; | |
4735 | } | |
4736 | ||
4737 | /* Merge backend specific data from an object file to the output | |
4738 | object file when linking. */ | |
4739 | static bfd_boolean | |
50e03d47 | 4740 | elfNN_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
cbe79dfe | 4741 | { |
50e03d47 | 4742 | bfd *obfd = info->output_bfd; |
cbe79dfe TG |
4743 | flagword out_flags; |
4744 | flagword in_flags; | |
4745 | bfd_boolean ok = TRUE; | |
4746 | ||
4747 | /* Don't even pretend to support mixed-format linking. */ | |
4748 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4749 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
4750 | return FALSE; | |
4751 | ||
4752 | in_flags = elf_elfheader (ibfd)->e_flags; | |
4753 | out_flags = elf_elfheader (obfd)->e_flags; | |
4754 | ||
4755 | if (! elf_flags_init (obfd)) | |
4756 | { | |
4757 | elf_flags_init (obfd) = TRUE; | |
4758 | elf_elfheader (obfd)->e_flags = in_flags; | |
4759 | ||
4760 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
4761 | && bfd_get_arch_info (obfd)->the_default) | |
4762 | { | |
4763 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
4764 | bfd_get_mach (ibfd)); | |
4765 | } | |
4766 | ||
4767 | return TRUE; | |
4768 | } | |
4769 | ||
4770 | /* Check flag compatibility. */ | |
4771 | if (in_flags == out_flags) | |
4772 | return TRUE; | |
4773 | ||
4774 | /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ | |
4775 | if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) | |
4776 | elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; | |
4777 | ||
4778 | if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) | |
4779 | { | |
4eca0228 | 4780 | _bfd_error_handler |
871b3ab2 | 4781 | (_("%pB: linking trap-on-NULL-dereference with non-trapping files"), |
cbe79dfe TG |
4782 | ibfd); |
4783 | ||
4784 | bfd_set_error (bfd_error_bad_value); | |
4785 | ok = FALSE; | |
4786 | } | |
4787 | if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) | |
4788 | { | |
4eca0228 | 4789 | _bfd_error_handler |
871b3ab2 | 4790 | (_("%pB: linking big-endian files with little-endian files"), |
cbe79dfe TG |
4791 | ibfd); |
4792 | ||
4793 | bfd_set_error (bfd_error_bad_value); | |
4794 | ok = FALSE; | |
4795 | } | |
4796 | if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) | |
4797 | { | |
4eca0228 | 4798 | _bfd_error_handler |
871b3ab2 | 4799 | (_("%pB: linking 64-bit files with 32-bit files"), |
cbe79dfe TG |
4800 | ibfd); |
4801 | ||
4802 | bfd_set_error (bfd_error_bad_value); | |
4803 | ok = FALSE; | |
4804 | } | |
4805 | if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) | |
4806 | { | |
4eca0228 | 4807 | _bfd_error_handler |
871b3ab2 | 4808 | (_("%pB: linking constant-gp files with non-constant-gp files"), |
cbe79dfe TG |
4809 | ibfd); |
4810 | ||
4811 | bfd_set_error (bfd_error_bad_value); | |
4812 | ok = FALSE; | |
4813 | } | |
4814 | if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) | |
4815 | != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) | |
4816 | { | |
4eca0228 | 4817 | _bfd_error_handler |
871b3ab2 | 4818 | (_("%pB: linking auto-pic files with non-auto-pic files"), |
cbe79dfe TG |
4819 | ibfd); |
4820 | ||
4821 | bfd_set_error (bfd_error_bad_value); | |
4822 | ok = FALSE; | |
4823 | } | |
4824 | ||
4825 | return ok; | |
4826 | } | |
4827 | ||
4828 | static bfd_boolean | |
2c3fc389 | 4829 | elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr) |
cbe79dfe TG |
4830 | { |
4831 | FILE *file = (FILE *) ptr; | |
4832 | flagword flags = elf_elfheader (abfd)->e_flags; | |
4833 | ||
4834 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
4835 | ||
4836 | fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", | |
4837 | (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", | |
4838 | (flags & EF_IA_64_EXT) ? "EXT, " : "", | |
4839 | (flags & EF_IA_64_BE) ? "BE, " : "LE, ", | |
4840 | (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", | |
4841 | (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", | |
4842 | (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", | |
4843 | (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", | |
4844 | (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); | |
4845 | ||
4846 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4847 | return TRUE; | |
4848 | } | |
4849 | ||
4850 | static enum elf_reloc_type_class | |
7e612e98 AM |
4851 | elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4852 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
4853 | const Elf_Internal_Rela *rela) | |
cbe79dfe TG |
4854 | { |
4855 | switch ((int) ELFNN_R_TYPE (rela->r_info)) | |
4856 | { | |
4857 | case R_IA64_REL32MSB: | |
4858 | case R_IA64_REL32LSB: | |
4859 | case R_IA64_REL64MSB: | |
4860 | case R_IA64_REL64LSB: | |
4861 | return reloc_class_relative; | |
4862 | case R_IA64_IPLTMSB: | |
4863 | case R_IA64_IPLTLSB: | |
4864 | return reloc_class_plt; | |
4865 | case R_IA64_COPY: | |
4866 | return reloc_class_copy; | |
4867 | default: | |
4868 | return reloc_class_normal; | |
4869 | } | |
4870 | } | |
4871 | ||
4872 | static const struct bfd_elf_special_section elfNN_ia64_special_sections[] = | |
4873 | { | |
07d6d2b8 | 4874 | { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, |
cbe79dfe | 4875 | { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, |
07d6d2b8 | 4876 | { NULL, 0, 0, 0, 0 } |
cbe79dfe TG |
4877 | }; |
4878 | ||
4879 | static bfd_boolean | |
4880 | elfNN_ia64_object_p (bfd *abfd) | |
4881 | { | |
4882 | asection *sec; | |
4883 | asection *group, *unwi, *unw; | |
4884 | flagword flags; | |
4885 | const char *name; | |
4886 | char *unwi_name, *unw_name; | |
4887 | bfd_size_type amt; | |
4888 | ||
4889 | if (abfd->flags & DYNAMIC) | |
4890 | return TRUE; | |
4891 | ||
4892 | /* Flags for fake group section. */ | |
4893 | flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE | |
4894 | | SEC_EXCLUDE); | |
4895 | ||
4896 | /* We add a fake section group for each .gnu.linkonce.t.* section, | |
4897 | which isn't in a section group, and its unwind sections. */ | |
4898 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
4899 | { | |
4900 | if (elf_sec_group (sec) == NULL | |
4901 | && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP)) | |
4902 | == (SEC_LINK_ONCE | SEC_CODE)) | |
4903 | && CONST_STRNEQ (sec->name, ".gnu.linkonce.t.")) | |
4904 | { | |
4905 | name = sec->name + 16; | |
4906 | ||
4907 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi."); | |
4908 | unwi_name = bfd_alloc (abfd, amt); | |
4909 | if (!unwi_name) | |
4910 | return FALSE; | |
4911 | ||
4912 | strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name); | |
4913 | unwi = bfd_get_section_by_name (abfd, unwi_name); | |
4914 | ||
4915 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw."); | |
4916 | unw_name = bfd_alloc (abfd, amt); | |
4917 | if (!unw_name) | |
4918 | return FALSE; | |
4919 | ||
4920 | strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name); | |
4921 | unw = bfd_get_section_by_name (abfd, unw_name); | |
4922 | ||
4923 | /* We need to create a fake group section for it and its | |
4924 | unwind sections. */ | |
4925 | group = bfd_make_section_anyway_with_flags (abfd, name, | |
4926 | flags); | |
4927 | if (group == NULL) | |
4928 | return FALSE; | |
4929 | ||
4930 | /* Move the fake group section to the beginning. */ | |
4931 | bfd_section_list_remove (abfd, group); | |
4932 | bfd_section_list_prepend (abfd, group); | |
4933 | ||
4934 | elf_next_in_group (group) = sec; | |
4935 | ||
4936 | elf_group_name (sec) = name; | |
4937 | elf_next_in_group (sec) = sec; | |
4938 | elf_sec_group (sec) = group; | |
4939 | ||
4940 | if (unwi) | |
4941 | { | |
4942 | elf_group_name (unwi) = name; | |
4943 | elf_next_in_group (unwi) = sec; | |
4944 | elf_next_in_group (sec) = unwi; | |
4945 | elf_sec_group (unwi) = group; | |
4946 | } | |
4947 | ||
4948 | if (unw) | |
4949 | { | |
4950 | elf_group_name (unw) = name; | |
4951 | if (unwi) | |
4952 | { | |
4953 | elf_next_in_group (unw) = elf_next_in_group (unwi); | |
4954 | elf_next_in_group (unwi) = unw; | |
4955 | } | |
4956 | else | |
4957 | { | |
4958 | elf_next_in_group (unw) = sec; | |
4959 | elf_next_in_group (sec) = unw; | |
4960 | } | |
4961 | elf_sec_group (unw) = group; | |
4962 | } | |
4963 | ||
4964 | /* Fake SHT_GROUP section header. */ | |
4965 | elf_section_data (group)->this_hdr.bfd_section = group; | |
4966 | elf_section_data (group)->this_hdr.sh_type = SHT_GROUP; | |
4967 | } | |
4968 | } | |
4969 | return TRUE; | |
4970 | } | |
4971 | ||
4972 | static bfd_boolean | |
4973 | elfNN_ia64_hpux_vec (const bfd_target *vec) | |
4974 | { | |
6d00b590 AM |
4975 | extern const bfd_target ia64_elfNN_hpux_be_vec; |
4976 | return (vec == &ia64_elfNN_hpux_be_vec); | |
cbe79dfe TG |
4977 | } |
4978 | ||
4979 | static void | |
4980 | elfNN_hpux_post_process_headers (bfd *abfd, | |
4981 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
4982 | { | |
4983 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
4984 | ||
4985 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
4986 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; | |
4987 | } | |
4988 | ||
4989 | static bfd_boolean | |
4990 | elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, | |
4991 | asection *sec, int *retval) | |
4992 | { | |
4993 | if (bfd_is_com_section (sec)) | |
4994 | { | |
4995 | *retval = SHN_IA_64_ANSI_COMMON; | |
4996 | return TRUE; | |
4997 | } | |
4998 | return FALSE; | |
4999 | } | |
5000 | ||
5001 | static void | |
5002 | elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
5003 | asymbol *asym) | |
5004 | { | |
5005 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
5006 | ||
5007 | switch (elfsym->internal_elf_sym.st_shndx) | |
5008 | { | |
5009 | case SHN_IA_64_ANSI_COMMON: | |
5010 | asym->section = bfd_com_section_ptr; | |
5011 | asym->value = elfsym->internal_elf_sym.st_size; | |
5012 | asym->flags &= ~BSF_GLOBAL; | |
5013 | break; | |
5014 | } | |
5015 | } | |
cbe79dfe | 5016 | \f |
6d00b590 | 5017 | #define TARGET_LITTLE_SYM ia64_elfNN_le_vec |
cbe79dfe | 5018 | #define TARGET_LITTLE_NAME "elfNN-ia64-little" |
6d00b590 | 5019 | #define TARGET_BIG_SYM ia64_elfNN_be_vec |
cbe79dfe TG |
5020 | #define TARGET_BIG_NAME "elfNN-ia64-big" |
5021 | #define ELF_ARCH bfd_arch_ia64 | |
5022 | #define ELF_TARGET_ID IA64_ELF_DATA | |
5023 | #define ELF_MACHINE_CODE EM_IA_64 | |
5024 | #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */ | |
5025 | #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */ | |
5026 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ | |
5027 | #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */ | |
5028 | ||
5029 | #define elf_backend_section_from_shdr \ | |
5030 | elfNN_ia64_section_from_shdr | |
5031 | #define elf_backend_section_flags \ | |
5032 | elfNN_ia64_section_flags | |
5033 | #define elf_backend_fake_sections \ | |
5034 | elfNN_ia64_fake_sections | |
5035 | #define elf_backend_final_write_processing \ | |
5036 | elfNN_ia64_final_write_processing | |
5037 | #define elf_backend_add_symbol_hook \ | |
5038 | elfNN_ia64_add_symbol_hook | |
5039 | #define elf_backend_additional_program_headers \ | |
5040 | elfNN_ia64_additional_program_headers | |
5041 | #define elf_backend_modify_segment_map \ | |
5042 | elfNN_ia64_modify_segment_map | |
5043 | #define elf_backend_modify_program_headers \ | |
5044 | elfNN_ia64_modify_program_headers | |
5045 | #define elf_info_to_howto \ | |
5046 | elfNN_ia64_info_to_howto | |
5047 | ||
5048 | #define bfd_elfNN_bfd_reloc_type_lookup \ | |
5049 | ia64_elf_reloc_type_lookup | |
5050 | #define bfd_elfNN_bfd_reloc_name_lookup \ | |
5051 | ia64_elf_reloc_name_lookup | |
5052 | #define bfd_elfNN_bfd_is_local_label_name \ | |
5053 | elfNN_ia64_is_local_label_name | |
5054 | #define bfd_elfNN_bfd_relax_section \ | |
5055 | elfNN_ia64_relax_section | |
5056 | ||
5057 | #define elf_backend_object_p \ | |
5058 | elfNN_ia64_object_p | |
5059 | ||
5060 | /* Stuff for the BFD linker: */ | |
5061 | #define bfd_elfNN_bfd_link_hash_table_create \ | |
5062 | elfNN_ia64_hash_table_create | |
cbe79dfe TG |
5063 | #define elf_backend_create_dynamic_sections \ |
5064 | elfNN_ia64_create_dynamic_sections | |
5065 | #define elf_backend_check_relocs \ | |
5066 | elfNN_ia64_check_relocs | |
5067 | #define elf_backend_adjust_dynamic_symbol \ | |
5068 | elfNN_ia64_adjust_dynamic_symbol | |
5069 | #define elf_backend_size_dynamic_sections \ | |
5070 | elfNN_ia64_size_dynamic_sections | |
5071 | #define elf_backend_omit_section_dynsym \ | |
d00dd7dc | 5072 | _bfd_elf_omit_section_dynsym_all |
cbe79dfe TG |
5073 | #define elf_backend_relocate_section \ |
5074 | elfNN_ia64_relocate_section | |
5075 | #define elf_backend_finish_dynamic_symbol \ | |
5076 | elfNN_ia64_finish_dynamic_symbol | |
5077 | #define elf_backend_finish_dynamic_sections \ | |
5078 | elfNN_ia64_finish_dynamic_sections | |
5079 | #define bfd_elfNN_bfd_final_link \ | |
5080 | elfNN_ia64_final_link | |
5081 | ||
5082 | #define bfd_elfNN_bfd_merge_private_bfd_data \ | |
5083 | elfNN_ia64_merge_private_bfd_data | |
5084 | #define bfd_elfNN_bfd_set_private_flags \ | |
5085 | elfNN_ia64_set_private_flags | |
5086 | #define bfd_elfNN_bfd_print_private_bfd_data \ | |
5087 | elfNN_ia64_print_private_bfd_data | |
5088 | ||
5089 | #define elf_backend_plt_readonly 1 | |
6e8d06db | 5090 | #define elf_backend_can_gc_sections 1 |
cbe79dfe TG |
5091 | #define elf_backend_want_plt_sym 0 |
5092 | #define elf_backend_plt_alignment 5 | |
5093 | #define elf_backend_got_header_size 0 | |
5094 | #define elf_backend_want_got_plt 1 | |
5095 | #define elf_backend_may_use_rel_p 1 | |
5096 | #define elf_backend_may_use_rela_p 1 | |
5097 | #define elf_backend_default_use_rela_p 1 | |
5098 | #define elf_backend_want_dynbss 0 | |
5099 | #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect | |
5100 | #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol | |
5101 | #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol | |
5102 | #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class | |
5103 | #define elf_backend_rela_normal 1 | |
64f52338 | 5104 | #define elf_backend_dtrel_excludes_plt 1 |
cbe79dfe TG |
5105 | #define elf_backend_special_sections elfNN_ia64_special_sections |
5106 | #define elf_backend_default_execstack 0 | |
5107 | ||
5108 | /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with | |
5109 | SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields. | |
5110 | We don't want to flood users with so many error messages. We turn | |
5111 | off the warning for now. It will be turned on later when the Intel | |
5112 | compiler is fixed. */ | |
5113 | #define elf_backend_link_order_error_handler NULL | |
5114 | ||
5115 | #include "elfNN-target.h" | |
5116 | ||
5117 | /* HPUX-specific vectors. */ | |
5118 | ||
5119 | #undef TARGET_LITTLE_SYM | |
5120 | #undef TARGET_LITTLE_NAME | |
5121 | #undef TARGET_BIG_SYM | |
07d6d2b8 AM |
5122 | #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec |
5123 | #undef TARGET_BIG_NAME | |
5124 | #define TARGET_BIG_NAME "elfNN-ia64-hpux-big" | |
cbe79dfe TG |
5125 | |
5126 | /* These are HP-UX specific functions. */ | |
5127 | ||
5128 | #undef elf_backend_post_process_headers | |
5129 | #define elf_backend_post_process_headers elfNN_hpux_post_process_headers | |
5130 | ||
5131 | #undef elf_backend_section_from_bfd_section | |
5132 | #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section | |
5133 | ||
5134 | #undef elf_backend_symbol_processing | |
5135 | #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing | |
5136 | ||
5137 | #undef elf_backend_want_p_paddr_set_to_zero | |
5138 | #define elf_backend_want_p_paddr_set_to_zero 1 | |
5139 | ||
5140 | #undef ELF_COMMONPAGESIZE | |
5141 | #undef ELF_OSABI | |
5142 | #define ELF_OSABI ELFOSABI_HPUX | |
5143 | ||
5144 | #undef elfNN_bed | |
5145 | #define elfNN_bed elfNN_ia64_hpux_bed | |
5146 | ||
5147 | #include "elfNN-target.h" |