elfnn-ia64.c revision 1.7 1 1.1 christos /* IA-64 support for 64-bit ELF
2 1.7 christos Copyright (C) 1998-2017 Free Software Foundation, Inc.
3 1.1 christos Contributed by David Mosberger-Tang <davidm (at) hpl.hp.com>
4 1.1 christos
5 1.1 christos This file is part of BFD, the Binary File Descriptor library.
6 1.1 christos
7 1.1 christos This program is free software; you can redistribute it and/or modify
8 1.1 christos it under the terms of the GNU General Public License as published by
9 1.1 christos the Free Software Foundation; either version 3 of the License, or
10 1.1 christos (at your option) any later version.
11 1.1 christos
12 1.1 christos This program is distributed in the hope that it will be useful,
13 1.1 christos but WITHOUT ANY WARRANTY; without even the implied warranty of
14 1.1 christos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 1.1 christos GNU General Public License for more details.
16 1.1 christos
17 1.1 christos You should have received a copy of the GNU General Public License
18 1.1 christos along with this program; if not, write to the Free Software
19 1.1 christos Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 1.1 christos MA 02110-1301, USA. */
21 1.1 christos
22 1.1 christos #include "sysdep.h"
23 1.1 christos #include "bfd.h"
24 1.1 christos #include "libbfd.h"
25 1.1 christos #include "elf-bfd.h"
26 1.1 christos #include "opcode/ia64.h"
27 1.1 christos #include "elf/ia64.h"
28 1.1 christos #include "objalloc.h"
29 1.1 christos #include "hashtab.h"
30 1.1 christos #include "bfd_stdint.h"
31 1.1 christos #include "elfxx-ia64.h"
32 1.1 christos
33 1.1 christos #define ARCH_SIZE NN
34 1.1 christos
35 1.1 christos #if ARCH_SIZE == 64
36 1.1 christos #define LOG_SECTION_ALIGN 3
37 1.1 christos #endif
38 1.1 christos
39 1.1 christos #if ARCH_SIZE == 32
40 1.1 christos #define LOG_SECTION_ALIGN 2
41 1.1 christos #endif
42 1.1 christos
43 1.1 christos typedef struct bfd_hash_entry *(*new_hash_entry_func)
44 1.1 christos (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
45 1.1 christos
46 1.1 christos /* In dynamically (linker-) created sections, we generally need to keep track
47 1.1 christos of the place a symbol or expression got allocated to. This is done via hash
48 1.1 christos tables that store entries of the following type. */
49 1.1 christos
50 1.1 christos struct elfNN_ia64_dyn_sym_info
51 1.1 christos {
52 1.1 christos /* The addend for which this entry is relevant. */
53 1.1 christos bfd_vma addend;
54 1.1 christos
55 1.1 christos bfd_vma got_offset;
56 1.1 christos bfd_vma fptr_offset;
57 1.1 christos bfd_vma pltoff_offset;
58 1.1 christos bfd_vma plt_offset;
59 1.1 christos bfd_vma plt2_offset;
60 1.1 christos bfd_vma tprel_offset;
61 1.1 christos bfd_vma dtpmod_offset;
62 1.1 christos bfd_vma dtprel_offset;
63 1.1 christos
64 1.1 christos /* The symbol table entry, if any, that this was derived from. */
65 1.1 christos struct elf_link_hash_entry *h;
66 1.1 christos
67 1.1 christos /* Used to count non-got, non-plt relocations for delayed sizing
68 1.1 christos of relocation sections. */
69 1.1 christos struct elfNN_ia64_dyn_reloc_entry
70 1.1 christos {
71 1.1 christos struct elfNN_ia64_dyn_reloc_entry *next;
72 1.1 christos asection *srel;
73 1.1 christos int type;
74 1.1 christos int count;
75 1.1 christos
76 1.1 christos /* Is this reloc against readonly section? */
77 1.1 christos bfd_boolean reltext;
78 1.1 christos } *reloc_entries;
79 1.1 christos
80 1.1 christos /* TRUE when the section contents have been updated. */
81 1.1 christos unsigned got_done : 1;
82 1.1 christos unsigned fptr_done : 1;
83 1.1 christos unsigned pltoff_done : 1;
84 1.1 christos unsigned tprel_done : 1;
85 1.1 christos unsigned dtpmod_done : 1;
86 1.1 christos unsigned dtprel_done : 1;
87 1.1 christos
88 1.1 christos /* TRUE for the different kinds of linker data we want created. */
89 1.1 christos unsigned want_got : 1;
90 1.1 christos unsigned want_gotx : 1;
91 1.1 christos unsigned want_fptr : 1;
92 1.1 christos unsigned want_ltoff_fptr : 1;
93 1.1 christos unsigned want_plt : 1;
94 1.1 christos unsigned want_plt2 : 1;
95 1.1 christos unsigned want_pltoff : 1;
96 1.1 christos unsigned want_tprel : 1;
97 1.1 christos unsigned want_dtpmod : 1;
98 1.1 christos unsigned want_dtprel : 1;
99 1.1 christos };
100 1.1 christos
101 1.1 christos struct elfNN_ia64_local_hash_entry
102 1.1 christos {
103 1.1 christos int id;
104 1.1 christos unsigned int r_sym;
105 1.1 christos /* The number of elements in elfNN_ia64_dyn_sym_info array. */
106 1.1 christos unsigned int count;
107 1.1 christos /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
108 1.1 christos unsigned int sorted_count;
109 1.1 christos /* The size of elfNN_ia64_dyn_sym_info array. */
110 1.1 christos unsigned int size;
111 1.1 christos /* The array of elfNN_ia64_dyn_sym_info. */
112 1.1 christos struct elfNN_ia64_dyn_sym_info *info;
113 1.1 christos
114 1.1 christos /* TRUE if this hash entry's addends was translated for
115 1.1 christos SHF_MERGE optimization. */
116 1.1 christos unsigned sec_merge_done : 1;
117 1.1 christos };
118 1.1 christos
119 1.1 christos struct elfNN_ia64_link_hash_entry
120 1.1 christos {
121 1.1 christos struct elf_link_hash_entry root;
122 1.1 christos /* The number of elements in elfNN_ia64_dyn_sym_info array. */
123 1.1 christos unsigned int count;
124 1.1 christos /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
125 1.1 christos unsigned int sorted_count;
126 1.1 christos /* The size of elfNN_ia64_dyn_sym_info array. */
127 1.1 christos unsigned int size;
128 1.1 christos /* The array of elfNN_ia64_dyn_sym_info. */
129 1.1 christos struct elfNN_ia64_dyn_sym_info *info;
130 1.1 christos };
131 1.1 christos
132 1.1 christos struct elfNN_ia64_link_hash_table
133 1.1 christos {
134 1.1 christos /* The main hash table. */
135 1.1 christos struct elf_link_hash_table root;
136 1.1 christos
137 1.1 christos asection *fptr_sec; /* Function descriptor table (or NULL). */
138 1.1 christos asection *rel_fptr_sec; /* Dynamic relocation section for same. */
139 1.1 christos asection *pltoff_sec; /* Private descriptors for plt (or NULL). */
140 1.1 christos asection *rel_pltoff_sec; /* Dynamic relocation section for same. */
141 1.1 christos
142 1.1 christos bfd_size_type minplt_entries; /* Number of minplt entries. */
143 1.1 christos unsigned reltext : 1; /* Are there relocs against readonly sections? */
144 1.1 christos unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */
145 1.1 christos bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */
146 1.1 christos /* There are maybe R_IA64_GPREL22 relocations, including those
147 1.1 christos optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
148 1.1 christos sections. We need to record those sections so that we can choose
149 1.1 christos a proper GP to cover all R_IA64_GPREL22 relocations. */
150 1.1 christos asection *max_short_sec; /* Maximum short output section. */
151 1.1 christos bfd_vma max_short_offset; /* Maximum short offset. */
152 1.1 christos asection *min_short_sec; /* Minimum short output section. */
153 1.1 christos bfd_vma min_short_offset; /* Minimum short offset. */
154 1.1 christos
155 1.1 christos htab_t loc_hash_table;
156 1.1 christos void *loc_hash_memory;
157 1.1 christos };
158 1.1 christos
159 1.1 christos struct elfNN_ia64_allocate_data
160 1.1 christos {
161 1.1 christos struct bfd_link_info *info;
162 1.1 christos bfd_size_type ofs;
163 1.1 christos bfd_boolean only_got;
164 1.1 christos };
165 1.1 christos
166 1.1 christos #define elfNN_ia64_hash_table(p) \
167 1.1 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
168 1.1 christos == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL)
169 1.1 christos
170 1.1 christos static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
171 1.1 christos (struct elfNN_ia64_link_hash_table *ia64_info,
172 1.1 christos struct elf_link_hash_entry *h,
173 1.1 christos bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create);
174 1.1 christos static bfd_boolean elfNN_ia64_dynamic_symbol_p
175 1.1 christos (struct elf_link_hash_entry *h, struct bfd_link_info *info, int);
176 1.1 christos static bfd_boolean elfNN_ia64_choose_gp
177 1.1 christos (bfd *abfd, struct bfd_link_info *info, bfd_boolean final);
178 1.1 christos static void elfNN_ia64_dyn_sym_traverse
179 1.1 christos (struct elfNN_ia64_link_hash_table *ia64_info,
180 1.1 christos bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
181 1.1 christos void * info);
182 1.1 christos static bfd_boolean allocate_global_data_got
183 1.1 christos (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
184 1.1 christos static bfd_boolean allocate_global_fptr_got
185 1.1 christos (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
186 1.1 christos static bfd_boolean allocate_local_got
187 1.1 christos (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
188 1.1 christos static bfd_boolean elfNN_ia64_hpux_vec
189 1.1 christos (const bfd_target *vec);
190 1.1 christos static bfd_boolean allocate_dynrel_entries
191 1.1 christos (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
192 1.1 christos static asection *get_pltoff
193 1.1 christos (bfd *abfd, struct bfd_link_info *info,
194 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info);
195 1.1 christos
196 1.1 christos /* ia64-specific relocation. */
198 1.1 christos
199 1.1 christos /* Given a ELF reloc, return the matching HOWTO structure. */
200 1.1 christos
201 1.1 christos static void
202 1.1 christos elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
203 1.1 christos arelent *bfd_reloc,
204 1.1 christos Elf_Internal_Rela *elf_reloc)
205 1.1 christos {
206 1.1 christos bfd_reloc->howto
207 1.1 christos = ia64_elf_lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info));
208 1.1 christos }
209 1.1 christos
210 1.1 christos #define PLT_HEADER_SIZE (3 * 16)
212 1.1 christos #define PLT_MIN_ENTRY_SIZE (1 * 16)
213 1.1 christos #define PLT_FULL_ENTRY_SIZE (2 * 16)
214 1.1 christos #define PLT_RESERVED_WORDS 3
215 1.1 christos
216 1.1 christos static const bfd_byte plt_header[PLT_HEADER_SIZE] =
217 1.1 christos {
218 1.1 christos 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
219 1.1 christos 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
220 1.1 christos 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
221 1.1 christos 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
222 1.1 christos 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
223 1.1 christos 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
224 1.1 christos 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
225 1.1 christos 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
226 1.1 christos 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
227 1.1 christos };
228 1.1 christos
229 1.1 christos static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
230 1.1 christos {
231 1.1 christos 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
232 1.1 christos 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
233 1.1 christos 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
234 1.1 christos };
235 1.1 christos
236 1.1 christos static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
237 1.1 christos {
238 1.1 christos 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
239 1.1 christos 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
240 1.1 christos 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
241 1.1 christos 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
242 1.1 christos 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
243 1.1 christos 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
244 1.1 christos };
245 1.1 christos
246 1.1 christos #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
247 1.1 christos
248 1.1 christos static const bfd_byte oor_brl[16] =
249 1.1 christos {
250 1.1 christos 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
251 1.1 christos 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
252 1.1 christos 0x00, 0x00, 0x00, 0xc0
253 1.1 christos };
254 1.1 christos
255 1.1 christos static const bfd_byte oor_ip[48] =
256 1.1 christos {
257 1.1 christos 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
258 1.1 christos 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
259 1.1 christos 0x01, 0x00, 0x00, 0x60,
260 1.1 christos 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
261 1.1 christos 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
262 1.1 christos 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
263 1.1 christos 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
264 1.1 christos 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
265 1.1 christos 0x60, 0x00, 0x80, 0x00 /* br b6;; */
266 1.1 christos };
267 1.1 christos
268 1.1 christos static size_t oor_branch_size = sizeof (oor_brl);
269 1.1 christos
270 1.1 christos void
271 1.1 christos bfd_elfNN_ia64_after_parse (int itanium)
272 1.1 christos {
273 1.1 christos oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
274 1.1 christos }
275 1.1 christos
276 1.1 christos
278 1.1 christos /* Rename some of the generic section flags to better document how they
279 1.1 christos are used here. */
280 1.1 christos #define skip_relax_pass_0 sec_flg0
281 1.1 christos #define skip_relax_pass_1 sec_flg1
282 1.1 christos
283 1.1 christos /* These functions do relaxation for IA-64 ELF. */
284 1.1 christos
285 1.1 christos static void
286 1.1 christos elfNN_ia64_update_short_info (asection *sec, bfd_vma offset,
287 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info)
288 1.1 christos {
289 1.1 christos /* Skip ABS and SHF_IA_64_SHORT sections. */
290 1.1 christos if (sec == bfd_abs_section_ptr
291 1.1 christos || (sec->flags & SEC_SMALL_DATA) != 0)
292 1.1 christos return;
293 1.1 christos
294 1.1 christos if (!ia64_info->min_short_sec)
295 1.1 christos {
296 1.1 christos ia64_info->max_short_sec = sec;
297 1.1 christos ia64_info->max_short_offset = offset;
298 1.1 christos ia64_info->min_short_sec = sec;
299 1.1 christos ia64_info->min_short_offset = offset;
300 1.1 christos }
301 1.1 christos else if (sec == ia64_info->max_short_sec
302 1.1 christos && offset > ia64_info->max_short_offset)
303 1.1 christos ia64_info->max_short_offset = offset;
304 1.1 christos else if (sec == ia64_info->min_short_sec
305 1.1 christos && offset < ia64_info->min_short_offset)
306 1.1 christos ia64_info->min_short_offset = offset;
307 1.1 christos else if (sec->output_section->vma
308 1.1 christos > ia64_info->max_short_sec->vma)
309 1.1 christos {
310 1.1 christos ia64_info->max_short_sec = sec;
311 1.1 christos ia64_info->max_short_offset = offset;
312 1.1 christos }
313 1.1 christos else if (sec->output_section->vma
314 1.1 christos < ia64_info->min_short_sec->vma)
315 1.1 christos {
316 1.1 christos ia64_info->min_short_sec = sec;
317 1.1 christos ia64_info->min_short_offset = offset;
318 1.1 christos }
319 1.1 christos }
320 1.1 christos
321 1.1 christos static bfd_boolean
322 1.1 christos elfNN_ia64_relax_section (bfd *abfd, asection *sec,
323 1.1 christos struct bfd_link_info *link_info,
324 1.1 christos bfd_boolean *again)
325 1.1 christos {
326 1.1 christos struct one_fixup
327 1.1 christos {
328 1.1 christos struct one_fixup *next;
329 1.1 christos asection *tsec;
330 1.1 christos bfd_vma toff;
331 1.1 christos bfd_vma trampoff;
332 1.1 christos };
333 1.1 christos
334 1.1 christos Elf_Internal_Shdr *symtab_hdr;
335 1.1 christos Elf_Internal_Rela *internal_relocs;
336 1.1 christos Elf_Internal_Rela *irel, *irelend;
337 1.1 christos bfd_byte *contents;
338 1.1 christos Elf_Internal_Sym *isymbuf = NULL;
339 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
340 1.1 christos struct one_fixup *fixups = NULL;
341 1.1 christos bfd_boolean changed_contents = FALSE;
342 1.1 christos bfd_boolean changed_relocs = FALSE;
343 1.1 christos bfd_boolean changed_got = FALSE;
344 1.1 christos bfd_boolean skip_relax_pass_0 = TRUE;
345 1.1 christos bfd_boolean skip_relax_pass_1 = TRUE;
346 1.1 christos bfd_vma gp = 0;
347 1.1 christos
348 1.1 christos /* Assume we're not going to change any sizes, and we'll only need
349 1.6 christos one pass. */
350 1.1 christos *again = FALSE;
351 1.1 christos
352 1.1 christos if (bfd_link_relocatable (link_info))
353 1.1 christos (*link_info->callbacks->einfo)
354 1.1 christos (_("%P%F: --relax and -r may not be used together\n"));
355 1.1 christos
356 1.1 christos /* Don't even try to relax for non-ELF outputs. */
357 1.1 christos if (!is_elf_hash_table (link_info->hash))
358 1.1 christos return FALSE;
359 1.1 christos
360 1.1 christos /* Nothing to do if there are no relocations or there is no need for
361 1.1 christos the current pass. */
362 1.1 christos if ((sec->flags & SEC_RELOC) == 0
363 1.1 christos || sec->reloc_count == 0
364 1.1 christos || (link_info->relax_pass == 0 && sec->skip_relax_pass_0)
365 1.1 christos || (link_info->relax_pass == 1 && sec->skip_relax_pass_1))
366 1.1 christos return TRUE;
367 1.1 christos
368 1.1 christos ia64_info = elfNN_ia64_hash_table (link_info);
369 1.1 christos if (ia64_info == NULL)
370 1.1 christos return FALSE;
371 1.1 christos
372 1.1 christos symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
373 1.1 christos
374 1.1 christos /* Load the relocations for this section. */
375 1.1 christos internal_relocs = (_bfd_elf_link_read_relocs
376 1.1 christos (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
377 1.1 christos link_info->keep_memory));
378 1.1 christos if (internal_relocs == NULL)
379 1.1 christos return FALSE;
380 1.1 christos
381 1.1 christos irelend = internal_relocs + sec->reloc_count;
382 1.1 christos
383 1.1 christos /* Get the section contents. */
384 1.1 christos if (elf_section_data (sec)->this_hdr.contents != NULL)
385 1.1 christos contents = elf_section_data (sec)->this_hdr.contents;
386 1.1 christos else
387 1.1 christos {
388 1.1 christos if (!bfd_malloc_and_get_section (abfd, sec, &contents))
389 1.1 christos goto error_return;
390 1.1 christos }
391 1.1 christos
392 1.1 christos for (irel = internal_relocs; irel < irelend; irel++)
393 1.1 christos {
394 1.1 christos unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
395 1.1 christos bfd_vma symaddr, reladdr, trampoff, toff, roff;
396 1.1 christos asection *tsec;
397 1.1 christos struct one_fixup *f;
398 1.1 christos bfd_size_type amt;
399 1.1 christos bfd_boolean is_branch;
400 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
401 1.1 christos char symtype;
402 1.1 christos
403 1.1 christos switch (r_type)
404 1.1 christos {
405 1.1 christos case R_IA64_PCREL21B:
406 1.1 christos case R_IA64_PCREL21BI:
407 1.1 christos case R_IA64_PCREL21M:
408 1.1 christos case R_IA64_PCREL21F:
409 1.1 christos /* In pass 1, all br relaxations are done. We can skip it. */
410 1.1 christos if (link_info->relax_pass == 1)
411 1.1 christos continue;
412 1.1 christos skip_relax_pass_0 = FALSE;
413 1.1 christos is_branch = TRUE;
414 1.1 christos break;
415 1.1 christos
416 1.1 christos case R_IA64_PCREL60B:
417 1.1 christos /* We can't optimize brl to br in pass 0 since br relaxations
418 1.1 christos will increase the code size. Defer it to pass 1. */
419 1.1 christos if (link_info->relax_pass == 0)
420 1.1 christos {
421 1.1 christos skip_relax_pass_1 = FALSE;
422 1.1 christos continue;
423 1.1 christos }
424 1.1 christos is_branch = TRUE;
425 1.1 christos break;
426 1.1 christos
427 1.1 christos case R_IA64_GPREL22:
428 1.1 christos /* Update max_short_sec/min_short_sec. */
429 1.1 christos
430 1.1 christos case R_IA64_LTOFF22X:
431 1.1 christos case R_IA64_LDXMOV:
432 1.1 christos /* We can't relax ldx/mov in pass 0 since br relaxations will
433 1.1 christos increase the code size. Defer it to pass 1. */
434 1.1 christos if (link_info->relax_pass == 0)
435 1.1 christos {
436 1.1 christos skip_relax_pass_1 = FALSE;
437 1.1 christos continue;
438 1.1 christos }
439 1.1 christos is_branch = FALSE;
440 1.1 christos break;
441 1.1 christos
442 1.1 christos default:
443 1.1 christos continue;
444 1.1 christos }
445 1.1 christos
446 1.1 christos /* Get the value of the symbol referred to by the reloc. */
447 1.1 christos if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
448 1.1 christos {
449 1.1 christos /* A local symbol. */
450 1.1 christos Elf_Internal_Sym *isym;
451 1.1 christos
452 1.1 christos /* Read this BFD's local symbols. */
453 1.1 christos if (isymbuf == NULL)
454 1.1 christos {
455 1.1 christos isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
456 1.1 christos if (isymbuf == NULL)
457 1.1 christos isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
458 1.1 christos symtab_hdr->sh_info, 0,
459 1.1 christos NULL, NULL, NULL);
460 1.1 christos if (isymbuf == 0)
461 1.1 christos goto error_return;
462 1.1 christos }
463 1.1 christos
464 1.1 christos isym = isymbuf + ELFNN_R_SYM (irel->r_info);
465 1.1 christos if (isym->st_shndx == SHN_UNDEF)
466 1.1 christos continue; /* We can't do anything with undefined symbols. */
467 1.1 christos else if (isym->st_shndx == SHN_ABS)
468 1.1 christos tsec = bfd_abs_section_ptr;
469 1.1 christos else if (isym->st_shndx == SHN_COMMON)
470 1.1 christos tsec = bfd_com_section_ptr;
471 1.1 christos else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
472 1.1 christos tsec = bfd_com_section_ptr;
473 1.1 christos else
474 1.1 christos tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
475 1.1 christos
476 1.1 christos toff = isym->st_value;
477 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
478 1.1 christos symtype = ELF_ST_TYPE (isym->st_info);
479 1.1 christos }
480 1.1 christos else
481 1.1 christos {
482 1.1 christos unsigned long indx;
483 1.1 christos struct elf_link_hash_entry *h;
484 1.1 christos
485 1.1 christos indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
486 1.1 christos h = elf_sym_hashes (abfd)[indx];
487 1.1 christos BFD_ASSERT (h != NULL);
488 1.1 christos
489 1.1 christos while (h->root.type == bfd_link_hash_indirect
490 1.1 christos || h->root.type == bfd_link_hash_warning)
491 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
492 1.1 christos
493 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
494 1.1 christos
495 1.1 christos /* For branches to dynamic symbols, we're interested instead
496 1.1 christos in a branch to the PLT entry. */
497 1.1 christos if (is_branch && dyn_i && dyn_i->want_plt2)
498 1.1 christos {
499 1.1 christos /* Internal branches shouldn't be sent to the PLT.
500 1.1 christos Leave this for now and we'll give an error later. */
501 1.1 christos if (r_type != R_IA64_PCREL21B)
502 1.1 christos continue;
503 1.1 christos
504 1.1 christos tsec = ia64_info->root.splt;
505 1.1 christos toff = dyn_i->plt2_offset;
506 1.1 christos BFD_ASSERT (irel->r_addend == 0);
507 1.1 christos }
508 1.1 christos
509 1.1 christos /* Can't do anything else with dynamic symbols. */
510 1.1 christos else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
511 1.1 christos continue;
512 1.1 christos
513 1.1 christos else
514 1.1 christos {
515 1.1 christos /* We can't do anything with undefined symbols. */
516 1.1 christos if (h->root.type == bfd_link_hash_undefined
517 1.1 christos || h->root.type == bfd_link_hash_undefweak)
518 1.1 christos continue;
519 1.1 christos
520 1.1 christos tsec = h->root.u.def.section;
521 1.1 christos toff = h->root.u.def.value;
522 1.1 christos }
523 1.1 christos
524 1.1 christos symtype = h->type;
525 1.1 christos }
526 1.1 christos
527 1.1 christos if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
528 1.1 christos {
529 1.1 christos /* At this stage in linking, no SEC_MERGE symbol has been
530 1.1 christos adjusted, so all references to such symbols need to be
531 1.1 christos passed through _bfd_merged_section_offset. (Later, in
532 1.1 christos relocate_section, all SEC_MERGE symbols *except* for
533 1.1 christos section symbols have been adjusted.)
534 1.1 christos
535 1.1 christos gas may reduce relocations against symbols in SEC_MERGE
536 1.1 christos sections to a relocation against the section symbol when
537 1.1 christos the original addend was zero. When the reloc is against
538 1.1 christos a section symbol we should include the addend in the
539 1.1 christos offset passed to _bfd_merged_section_offset, since the
540 1.1 christos location of interest is the original symbol. On the
541 1.1 christos other hand, an access to "sym+addend" where "sym" is not
542 1.1 christos a section symbol should not include the addend; Such an
543 1.1 christos access is presumed to be an offset from "sym"; The
544 1.1 christos location of interest is just "sym". */
545 1.1 christos if (symtype == STT_SECTION)
546 1.1 christos toff += irel->r_addend;
547 1.1 christos
548 1.1 christos toff = _bfd_merged_section_offset (abfd, &tsec,
549 1.1 christos elf_section_data (tsec)->sec_info,
550 1.1 christos toff);
551 1.1 christos
552 1.1 christos if (symtype != STT_SECTION)
553 1.1 christos toff += irel->r_addend;
554 1.1 christos }
555 1.1 christos else
556 1.1 christos toff += irel->r_addend;
557 1.1 christos
558 1.1 christos symaddr = tsec->output_section->vma + tsec->output_offset + toff;
559 1.1 christos
560 1.1 christos roff = irel->r_offset;
561 1.1 christos
562 1.1 christos if (is_branch)
563 1.1 christos {
564 1.1 christos bfd_signed_vma offset;
565 1.1 christos
566 1.1 christos reladdr = (sec->output_section->vma
567 1.1 christos + sec->output_offset
568 1.1 christos + roff) & (bfd_vma) -4;
569 1.1 christos
570 1.1 christos /* The .plt section is aligned at 32byte and the .text section
571 1.1 christos is aligned at 64byte. The .text section is right after the
572 1.1 christos .plt section. After the first relaxation pass, linker may
573 1.1 christos increase the gap between the .plt and .text sections up
574 1.1 christos to 32byte. We assume linker will always insert 32byte
575 1.1 christos between the .plt and .text sections after the first
576 1.1 christos relaxation pass. */
577 1.1 christos if (tsec == ia64_info->root.splt)
578 1.1 christos offset = -0x1000000 + 32;
579 1.1 christos else
580 1.1 christos offset = -0x1000000;
581 1.1 christos
582 1.1 christos /* If the branch is in range, no need to do anything. */
583 1.1 christos if ((bfd_signed_vma) (symaddr - reladdr) >= offset
584 1.1 christos && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
585 1.1 christos {
586 1.1 christos /* If the 60-bit branch is in 21-bit range, optimize it. */
587 1.1 christos if (r_type == R_IA64_PCREL60B)
588 1.1 christos {
589 1.1 christos ia64_elf_relax_brl (contents, roff);
590 1.1 christos
591 1.1 christos irel->r_info
592 1.1 christos = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
593 1.1 christos R_IA64_PCREL21B);
594 1.1 christos
595 1.1 christos /* If the original relocation offset points to slot
596 1.1 christos 1, change it to slot 2. */
597 1.1 christos if ((irel->r_offset & 3) == 1)
598 1.1 christos irel->r_offset += 1;
599 1.1 christos }
600 1.1 christos
601 1.1 christos continue;
602 1.1 christos }
603 1.1 christos else if (r_type == R_IA64_PCREL60B)
604 1.1 christos continue;
605 1.1 christos else if (ia64_elf_relax_br (contents, roff))
606 1.1 christos {
607 1.1 christos irel->r_info
608 1.1 christos = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
609 1.1 christos R_IA64_PCREL60B);
610 1.1 christos
611 1.1 christos /* Make the relocation offset point to slot 1. */
612 1.1 christos irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1;
613 1.1 christos continue;
614 1.1 christos }
615 1.1 christos
616 1.1 christos /* We can't put a trampoline in a .init/.fini section. Issue
617 1.1 christos an error. */
618 1.7 christos if (strcmp (sec->output_section->name, ".init") == 0
619 1.7 christos || strcmp (sec->output_section->name, ".fini") == 0)
620 1.7 christos {
621 1.7 christos _bfd_error_handler
622 1.7 christos /* xgettext:c-format */
623 1.1 christos (_("%B: Can't relax br at 0x%lx in section `%A'."
624 1.1 christos " Please use brl or indirect branch."),
625 1.1 christos sec->owner, (unsigned long) roff, sec);
626 1.1 christos bfd_set_error (bfd_error_bad_value);
627 1.1 christos goto error_return;
628 1.1 christos }
629 1.1 christos
630 1.1 christos /* If the branch and target are in the same section, you've
631 1.1 christos got one honking big section and we can't help you unless
632 1.1 christos you are branching backwards. You'll get an error message
633 1.1 christos later. */
634 1.1 christos if (tsec == sec && toff > roff)
635 1.1 christos continue;
636 1.1 christos
637 1.1 christos /* Look for an existing fixup to this address. */
638 1.1 christos for (f = fixups; f ; f = f->next)
639 1.1 christos if (f->tsec == tsec && f->toff == toff)
640 1.1 christos break;
641 1.1 christos
642 1.1 christos if (f == NULL)
643 1.1 christos {
644 1.1 christos /* Two alternatives: If it's a branch to a PLT entry, we can
645 1.1 christos make a copy of the FULL_PLT entry. Otherwise, we'll have
646 1.1 christos to use a `brl' insn to get where we're going. */
647 1.1 christos
648 1.1 christos size_t size;
649 1.1 christos
650 1.1 christos if (tsec == ia64_info->root.splt)
651 1.1 christos size = sizeof (plt_full_entry);
652 1.1 christos else
653 1.1 christos size = oor_branch_size;
654 1.1 christos
655 1.1 christos /* Resize the current section to make room for the new branch. */
656 1.1 christos trampoff = (sec->size + 15) & (bfd_vma) -16;
657 1.1 christos
658 1.1 christos /* If trampoline is out of range, there is nothing we
659 1.1 christos can do. */
660 1.1 christos offset = trampoff - (roff & (bfd_vma) -4);
661 1.1 christos if (offset < -0x1000000 || offset > 0x0FFFFF0)
662 1.1 christos continue;
663 1.1 christos
664 1.1 christos amt = trampoff + size;
665 1.1 christos contents = (bfd_byte *) bfd_realloc (contents, amt);
666 1.1 christos if (contents == NULL)
667 1.1 christos goto error_return;
668 1.1 christos sec->size = amt;
669 1.1 christos
670 1.1 christos if (tsec == ia64_info->root.splt)
671 1.1 christos {
672 1.1 christos memcpy (contents + trampoff, plt_full_entry, size);
673 1.1 christos
674 1.1 christos /* Hijack the old relocation for use as the PLTOFF reloc. */
675 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
676 1.1 christos R_IA64_PLTOFF22);
677 1.1 christos irel->r_offset = trampoff;
678 1.1 christos }
679 1.1 christos else
680 1.1 christos {
681 1.1 christos if (size == sizeof (oor_ip))
682 1.1 christos {
683 1.1 christos memcpy (contents + trampoff, oor_ip, size);
684 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
685 1.1 christos R_IA64_PCREL64I);
686 1.1 christos irel->r_addend -= 16;
687 1.1 christos irel->r_offset = trampoff + 2;
688 1.1 christos }
689 1.1 christos else
690 1.1 christos {
691 1.1 christos memcpy (contents + trampoff, oor_brl, size);
692 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
693 1.1 christos R_IA64_PCREL60B);
694 1.1 christos irel->r_offset = trampoff + 2;
695 1.1 christos }
696 1.1 christos
697 1.1 christos }
698 1.1 christos
699 1.1 christos /* Record the fixup so we don't do it again this section. */
700 1.1 christos f = (struct one_fixup *)
701 1.1 christos bfd_malloc ((bfd_size_type) sizeof (*f));
702 1.1 christos f->next = fixups;
703 1.1 christos f->tsec = tsec;
704 1.1 christos f->toff = toff;
705 1.1 christos f->trampoff = trampoff;
706 1.1 christos fixups = f;
707 1.1 christos }
708 1.1 christos else
709 1.1 christos {
710 1.1 christos /* If trampoline is out of range, there is nothing we
711 1.1 christos can do. */
712 1.1 christos offset = f->trampoff - (roff & (bfd_vma) -4);
713 1.1 christos if (offset < -0x1000000 || offset > 0x0FFFFF0)
714 1.1 christos continue;
715 1.1 christos
716 1.1 christos /* Nop out the reloc, since we're finalizing things here. */
717 1.1 christos irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
718 1.1 christos }
719 1.1 christos
720 1.1 christos /* Fix up the existing branch to hit the trampoline. */
721 1.1 christos if (ia64_elf_install_value (contents + roff, offset, r_type)
722 1.1 christos != bfd_reloc_ok)
723 1.1 christos goto error_return;
724 1.1 christos
725 1.1 christos changed_contents = TRUE;
726 1.1 christos changed_relocs = TRUE;
727 1.1 christos }
728 1.1 christos else
729 1.1 christos {
730 1.1 christos /* Fetch the gp. */
731 1.1 christos if (gp == 0)
732 1.1 christos {
733 1.1 christos bfd *obfd = sec->output_section->owner;
734 1.1 christos gp = _bfd_get_gp_value (obfd);
735 1.1 christos if (gp == 0)
736 1.1 christos {
737 1.1 christos if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE))
738 1.1 christos goto error_return;
739 1.1 christos gp = _bfd_get_gp_value (obfd);
740 1.1 christos }
741 1.1 christos }
742 1.1 christos
743 1.1 christos /* If the data is out of range, do nothing. */
744 1.1 christos if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
745 1.1 christos ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
746 1.1 christos continue;
747 1.1 christos
748 1.1 christos if (r_type == R_IA64_GPREL22)
749 1.1 christos elfNN_ia64_update_short_info (tsec->output_section,
750 1.1 christos tsec->output_offset + toff,
751 1.1 christos ia64_info);
752 1.1 christos else if (r_type == R_IA64_LTOFF22X)
753 1.1 christos {
754 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
755 1.1 christos R_IA64_GPREL22);
756 1.1 christos changed_relocs = TRUE;
757 1.1 christos if (dyn_i->want_gotx)
758 1.1 christos {
759 1.1 christos dyn_i->want_gotx = 0;
760 1.1 christos changed_got |= !dyn_i->want_got;
761 1.1 christos }
762 1.1 christos
763 1.1 christos elfNN_ia64_update_short_info (tsec->output_section,
764 1.1 christos tsec->output_offset + toff,
765 1.1 christos ia64_info);
766 1.1 christos }
767 1.1 christos else
768 1.1 christos {
769 1.1 christos ia64_elf_relax_ldxmov (contents, roff);
770 1.1 christos irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
771 1.1 christos changed_contents = TRUE;
772 1.1 christos changed_relocs = TRUE;
773 1.1 christos }
774 1.1 christos }
775 1.1 christos }
776 1.1 christos
777 1.1 christos /* ??? If we created fixups, this may push the code segment large
778 1.1 christos enough that the data segment moves, which will change the GP.
779 1.1 christos Reset the GP so that we re-calculate next round. We need to
780 1.1 christos do this at the _beginning_ of the next round; now will not do. */
781 1.1 christos
782 1.1 christos /* Clean up and go home. */
783 1.1 christos while (fixups)
784 1.1 christos {
785 1.1 christos struct one_fixup *f = fixups;
786 1.1 christos fixups = fixups->next;
787 1.1 christos free (f);
788 1.1 christos }
789 1.1 christos
790 1.1 christos if (isymbuf != NULL
791 1.1 christos && symtab_hdr->contents != (unsigned char *) isymbuf)
792 1.1 christos {
793 1.1 christos if (! link_info->keep_memory)
794 1.1 christos free (isymbuf);
795 1.1 christos else
796 1.1 christos {
797 1.1 christos /* Cache the symbols for elf_link_input_bfd. */
798 1.1 christos symtab_hdr->contents = (unsigned char *) isymbuf;
799 1.1 christos }
800 1.1 christos }
801 1.1 christos
802 1.1 christos if (contents != NULL
803 1.1 christos && elf_section_data (sec)->this_hdr.contents != contents)
804 1.1 christos {
805 1.1 christos if (!changed_contents && !link_info->keep_memory)
806 1.1 christos free (contents);
807 1.1 christos else
808 1.1 christos {
809 1.1 christos /* Cache the section contents for elf_link_input_bfd. */
810 1.1 christos elf_section_data (sec)->this_hdr.contents = contents;
811 1.1 christos }
812 1.1 christos }
813 1.1 christos
814 1.1 christos if (elf_section_data (sec)->relocs != internal_relocs)
815 1.1 christos {
816 1.1 christos if (!changed_relocs)
817 1.1 christos free (internal_relocs);
818 1.1 christos else
819 1.1 christos elf_section_data (sec)->relocs = internal_relocs;
820 1.1 christos }
821 1.1 christos
822 1.1 christos if (changed_got)
823 1.1 christos {
824 1.1 christos struct elfNN_ia64_allocate_data data;
825 1.1 christos data.info = link_info;
826 1.1 christos data.ofs = 0;
827 1.1 christos ia64_info->self_dtpmod_offset = (bfd_vma) -1;
828 1.1 christos
829 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
830 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
831 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
832 1.1 christos ia64_info->root.sgot->size = data.ofs;
833 1.1 christos
834 1.1 christos if (ia64_info->root.dynamic_sections_created
835 1.1 christos && ia64_info->root.srelgot != NULL)
836 1.6 christos {
837 1.1 christos /* Resize .rela.got. */
838 1.1 christos ia64_info->root.srelgot->size = 0;
839 1.1 christos if (bfd_link_pic (link_info)
840 1.1 christos && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
841 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
842 1.1 christos data.only_got = TRUE;
843 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries,
844 1.1 christos &data);
845 1.1 christos }
846 1.1 christos }
847 1.1 christos
848 1.1 christos if (link_info->relax_pass == 0)
849 1.1 christos {
850 1.1 christos /* Pass 0 is only needed to relax br. */
851 1.1 christos sec->skip_relax_pass_0 = skip_relax_pass_0;
852 1.1 christos sec->skip_relax_pass_1 = skip_relax_pass_1;
853 1.1 christos }
854 1.1 christos
855 1.1 christos *again = changed_contents || changed_relocs;
856 1.1 christos return TRUE;
857 1.1 christos
858 1.1 christos error_return:
859 1.1 christos if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
860 1.1 christos free (isymbuf);
861 1.1 christos if (contents != NULL
862 1.1 christos && elf_section_data (sec)->this_hdr.contents != contents)
863 1.1 christos free (contents);
864 1.1 christos if (internal_relocs != NULL
865 1.1 christos && elf_section_data (sec)->relocs != internal_relocs)
866 1.1 christos free (internal_relocs);
867 1.1 christos return FALSE;
868 1.1 christos }
869 1.1 christos #undef skip_relax_pass_0
870 1.1 christos #undef skip_relax_pass_1
871 1.1 christos
872 1.1 christos /* Return TRUE if NAME is an unwind table section name. */
874 1.1 christos
875 1.1 christos static inline bfd_boolean
876 1.1 christos is_unwind_section_name (bfd *abfd, const char *name)
877 1.1 christos {
878 1.1 christos if (elfNN_ia64_hpux_vec (abfd->xvec)
879 1.1 christos && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
880 1.1 christos return FALSE;
881 1.1 christos
882 1.1 christos return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind)
883 1.1 christos && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info))
884 1.1 christos || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once));
885 1.1 christos }
886 1.1 christos
887 1.1 christos /* Handle an IA-64 specific section when reading an object file. This
888 1.1 christos is called when bfd_section_from_shdr finds a section with an unknown
889 1.1 christos type. */
890 1.1 christos
891 1.1 christos static bfd_boolean
892 1.1 christos elfNN_ia64_section_from_shdr (bfd *abfd,
893 1.1 christos Elf_Internal_Shdr *hdr,
894 1.1 christos const char *name,
895 1.1 christos int shindex)
896 1.1 christos {
897 1.1 christos /* There ought to be a place to keep ELF backend specific flags, but
898 1.1 christos at the moment there isn't one. We just keep track of the
899 1.1 christos sections by their name, instead. Fortunately, the ABI gives
900 1.1 christos suggested names for all the MIPS specific sections, so we will
901 1.1 christos probably get away with this. */
902 1.1 christos switch (hdr->sh_type)
903 1.1 christos {
904 1.1 christos case SHT_IA_64_UNWIND:
905 1.1 christos case SHT_IA_64_HP_OPT_ANOT:
906 1.1 christos break;
907 1.1 christos
908 1.1 christos case SHT_IA_64_EXT:
909 1.1 christos if (strcmp (name, ELF_STRING_ia64_archext) != 0)
910 1.1 christos return FALSE;
911 1.1 christos break;
912 1.1 christos
913 1.1 christos default:
914 1.1 christos return FALSE;
915 1.1 christos }
916 1.1 christos
917 1.1 christos if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
918 1.1 christos return FALSE;
919 1.1 christos
920 1.1 christos return TRUE;
921 1.1 christos }
922 1.1 christos
923 1.1 christos /* Convert IA-64 specific section flags to bfd internal section flags. */
924 1.1 christos
925 1.1 christos /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
926 1.1 christos flag. */
927 1.1 christos
928 1.1 christos static bfd_boolean
929 1.1 christos elfNN_ia64_section_flags (flagword *flags,
930 1.1 christos const Elf_Internal_Shdr *hdr)
931 1.1 christos {
932 1.1 christos if (hdr->sh_flags & SHF_IA_64_SHORT)
933 1.1 christos *flags |= SEC_SMALL_DATA;
934 1.1 christos
935 1.1 christos return TRUE;
936 1.1 christos }
937 1.1 christos
938 1.1 christos /* Set the correct type for an IA-64 ELF section. We do this by the
939 1.1 christos section name, which is a hack, but ought to work. */
940 1.1 christos
941 1.1 christos static bfd_boolean
942 1.1 christos elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr,
943 1.1 christos asection *sec)
944 1.1 christos {
945 1.1 christos const char *name;
946 1.1 christos
947 1.1 christos name = bfd_get_section_name (abfd, sec);
948 1.1 christos
949 1.1 christos if (is_unwind_section_name (abfd, name))
950 1.1 christos {
951 1.1 christos /* We don't have the sections numbered at this point, so sh_info
952 1.1 christos is set later, in elfNN_ia64_final_write_processing. */
953 1.1 christos hdr->sh_type = SHT_IA_64_UNWIND;
954 1.1 christos hdr->sh_flags |= SHF_LINK_ORDER;
955 1.1 christos }
956 1.1 christos else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
957 1.1 christos hdr->sh_type = SHT_IA_64_EXT;
958 1.1 christos else if (strcmp (name, ".HP.opt_annot") == 0)
959 1.1 christos hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
960 1.1 christos else if (strcmp (name, ".reloc") == 0)
961 1.1 christos /* This is an ugly, but unfortunately necessary hack that is
962 1.1 christos needed when producing EFI binaries on IA-64. It tells
963 1.1 christos elf.c:elf_fake_sections() not to consider ".reloc" as a section
964 1.1 christos containing ELF relocation info. We need this hack in order to
965 1.1 christos be able to generate ELF binaries that can be translated into
966 1.1 christos EFI applications (which are essentially COFF objects). Those
967 1.1 christos files contain a COFF ".reloc" section inside an ELFNN object,
968 1.1 christos which would normally cause BFD to segfault because it would
969 1.1 christos attempt to interpret this section as containing relocation
970 1.1 christos entries for section "oc". With this hack enabled, ".reloc"
971 1.1 christos will be treated as a normal data section, which will avoid the
972 1.1 christos segfault. However, you won't be able to create an ELFNN binary
973 1.1 christos with a section named "oc" that needs relocations, but that's
974 1.1 christos the kind of ugly side-effects you get when detecting section
975 1.1 christos types based on their names... In practice, this limitation is
976 1.1 christos unlikely to bite. */
977 1.1 christos hdr->sh_type = SHT_PROGBITS;
978 1.1 christos
979 1.1 christos if (sec->flags & SEC_SMALL_DATA)
980 1.1 christos hdr->sh_flags |= SHF_IA_64_SHORT;
981 1.1 christos
982 1.1 christos /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
983 1.1 christos
984 1.1 christos if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS))
985 1.1 christos hdr->sh_flags |= SHF_IA_64_HP_TLS;
986 1.1 christos
987 1.1 christos return TRUE;
988 1.1 christos }
989 1.1 christos
990 1.1 christos /* The final processing done just before writing out an IA-64 ELF
991 1.1 christos object file. */
992 1.1 christos
993 1.1 christos static void
994 1.1 christos elfNN_ia64_final_write_processing (bfd *abfd,
995 1.1 christos bfd_boolean linker ATTRIBUTE_UNUSED)
996 1.1 christos {
997 1.1 christos Elf_Internal_Shdr *hdr;
998 1.1 christos asection *s;
999 1.1 christos
1000 1.1 christos for (s = abfd->sections; s; s = s->next)
1001 1.1 christos {
1002 1.1 christos hdr = &elf_section_data (s)->this_hdr;
1003 1.1 christos switch (hdr->sh_type)
1004 1.1 christos {
1005 1.1 christos case SHT_IA_64_UNWIND:
1006 1.1 christos /* The IA-64 processor-specific ABI requires setting sh_link
1007 1.1 christos to the unwind section, whereas HP-UX requires sh_info to
1008 1.1 christos do so. For maximum compatibility, we'll set both for
1009 1.1 christos now... */
1010 1.1 christos hdr->sh_info = hdr->sh_link;
1011 1.1 christos break;
1012 1.1 christos }
1013 1.1 christos }
1014 1.1 christos
1015 1.1 christos if (! elf_flags_init (abfd))
1016 1.1 christos {
1017 1.1 christos unsigned long flags = 0;
1018 1.1 christos
1019 1.1 christos if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1020 1.1 christos flags |= EF_IA_64_BE;
1021 1.1 christos if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1022 1.1 christos flags |= EF_IA_64_ABI64;
1023 1.1 christos
1024 1.1 christos elf_elfheader(abfd)->e_flags = flags;
1025 1.1 christos elf_flags_init (abfd) = TRUE;
1026 1.1 christos }
1027 1.1 christos }
1028 1.1 christos
1029 1.1 christos /* Hook called by the linker routine which adds symbols from an object
1030 1.1 christos file. We use it to put .comm items in .sbss, and not .bss. */
1031 1.1 christos
1032 1.1 christos static bfd_boolean
1033 1.1 christos elfNN_ia64_add_symbol_hook (bfd *abfd,
1034 1.1 christos struct bfd_link_info *info,
1035 1.1 christos Elf_Internal_Sym *sym,
1036 1.1 christos const char **namep ATTRIBUTE_UNUSED,
1037 1.1 christos flagword *flagsp ATTRIBUTE_UNUSED,
1038 1.6 christos asection **secp,
1039 1.1 christos bfd_vma *valp)
1040 1.1 christos {
1041 1.1 christos if (sym->st_shndx == SHN_COMMON
1042 1.1 christos && !bfd_link_relocatable (info)
1043 1.1 christos && sym->st_size <= elf_gp_size (abfd))
1044 1.1 christos {
1045 1.1 christos /* Common symbols less than or equal to -G nn bytes are
1046 1.1 christos automatically put into .sbss. */
1047 1.1 christos
1048 1.1 christos asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1049 1.1 christos
1050 1.1 christos if (scomm == NULL)
1051 1.1 christos {
1052 1.1 christos scomm = bfd_make_section_with_flags (abfd, ".scommon",
1053 1.1 christos (SEC_ALLOC
1054 1.1 christos | SEC_IS_COMMON
1055 1.1 christos | SEC_LINKER_CREATED));
1056 1.1 christos if (scomm == NULL)
1057 1.1 christos return FALSE;
1058 1.1 christos }
1059 1.1 christos
1060 1.1 christos *secp = scomm;
1061 1.1 christos *valp = sym->st_size;
1062 1.1 christos }
1063 1.1 christos
1064 1.1 christos return TRUE;
1065 1.1 christos }
1066 1.1 christos
1067 1.1 christos /* Return the number of additional phdrs we will need. */
1068 1.1 christos
1069 1.1 christos static int
1070 1.1 christos elfNN_ia64_additional_program_headers (bfd *abfd,
1071 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
1072 1.1 christos {
1073 1.1 christos asection *s;
1074 1.1 christos int ret = 0;
1075 1.1 christos
1076 1.1 christos /* See if we need a PT_IA_64_ARCHEXT segment. */
1077 1.1 christos s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1078 1.1 christos if (s && (s->flags & SEC_LOAD))
1079 1.1 christos ++ret;
1080 1.1 christos
1081 1.1 christos /* Count how many PT_IA_64_UNWIND segments we need. */
1082 1.1 christos for (s = abfd->sections; s; s = s->next)
1083 1.1 christos if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1084 1.1 christos ++ret;
1085 1.1 christos
1086 1.1 christos return ret;
1087 1.1 christos }
1088 1.1 christos
1089 1.1 christos static bfd_boolean
1090 1.1 christos elfNN_ia64_modify_segment_map (bfd *abfd,
1091 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
1092 1.1 christos {
1093 1.1 christos struct elf_segment_map *m, **pm;
1094 1.1 christos Elf_Internal_Shdr *hdr;
1095 1.1 christos asection *s;
1096 1.1 christos
1097 1.1 christos /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1098 1.1 christos all PT_LOAD segments. */
1099 1.1 christos s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1100 1.1 christos if (s && (s->flags & SEC_LOAD))
1101 1.1 christos {
1102 1.1 christos for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1103 1.1 christos if (m->p_type == PT_IA_64_ARCHEXT)
1104 1.1 christos break;
1105 1.1 christos if (m == NULL)
1106 1.1 christos {
1107 1.1 christos m = ((struct elf_segment_map *)
1108 1.1 christos bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1109 1.1 christos if (m == NULL)
1110 1.1 christos return FALSE;
1111 1.1 christos
1112 1.1 christos m->p_type = PT_IA_64_ARCHEXT;
1113 1.1 christos m->count = 1;
1114 1.1 christos m->sections[0] = s;
1115 1.1 christos
1116 1.1 christos /* We want to put it after the PHDR and INTERP segments. */
1117 1.1 christos pm = &elf_seg_map (abfd);
1118 1.1 christos while (*pm != NULL
1119 1.1 christos && ((*pm)->p_type == PT_PHDR
1120 1.1 christos || (*pm)->p_type == PT_INTERP))
1121 1.1 christos pm = &(*pm)->next;
1122 1.1 christos
1123 1.1 christos m->next = *pm;
1124 1.1 christos *pm = m;
1125 1.1 christos }
1126 1.1 christos }
1127 1.1 christos
1128 1.1 christos /* Install PT_IA_64_UNWIND segments, if needed. */
1129 1.1 christos for (s = abfd->sections; s; s = s->next)
1130 1.1 christos {
1131 1.1 christos hdr = &elf_section_data (s)->this_hdr;
1132 1.1 christos if (hdr->sh_type != SHT_IA_64_UNWIND)
1133 1.1 christos continue;
1134 1.1 christos
1135 1.1 christos if (s && (s->flags & SEC_LOAD))
1136 1.1 christos {
1137 1.1 christos for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1138 1.1 christos if (m->p_type == PT_IA_64_UNWIND)
1139 1.1 christos {
1140 1.1 christos int i;
1141 1.1 christos
1142 1.1 christos /* Look through all sections in the unwind segment
1143 1.1 christos for a match since there may be multiple sections
1144 1.1 christos to a segment. */
1145 1.1 christos for (i = m->count - 1; i >= 0; --i)
1146 1.1 christos if (m->sections[i] == s)
1147 1.1 christos break;
1148 1.1 christos
1149 1.1 christos if (i >= 0)
1150 1.1 christos break;
1151 1.1 christos }
1152 1.1 christos
1153 1.1 christos if (m == NULL)
1154 1.1 christos {
1155 1.1 christos m = ((struct elf_segment_map *)
1156 1.1 christos bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1157 1.1 christos if (m == NULL)
1158 1.1 christos return FALSE;
1159 1.1 christos
1160 1.1 christos m->p_type = PT_IA_64_UNWIND;
1161 1.1 christos m->count = 1;
1162 1.1 christos m->sections[0] = s;
1163 1.1 christos m->next = NULL;
1164 1.1 christos
1165 1.1 christos /* We want to put it last. */
1166 1.1 christos pm = &elf_seg_map (abfd);
1167 1.1 christos while (*pm != NULL)
1168 1.1 christos pm = &(*pm)->next;
1169 1.1 christos *pm = m;
1170 1.1 christos }
1171 1.1 christos }
1172 1.1 christos }
1173 1.1 christos
1174 1.1 christos return TRUE;
1175 1.1 christos }
1176 1.1 christos
1177 1.1 christos /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1178 1.1 christos the input sections for each output section in the segment and testing
1179 1.1 christos for SHF_IA_64_NORECOV on each. */
1180 1.1 christos
1181 1.1 christos static bfd_boolean
1182 1.1 christos elfNN_ia64_modify_program_headers (bfd *abfd,
1183 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
1184 1.1 christos {
1185 1.1 christos struct elf_obj_tdata *tdata = elf_tdata (abfd);
1186 1.1 christos struct elf_segment_map *m;
1187 1.1 christos Elf_Internal_Phdr *p;
1188 1.1 christos
1189 1.1 christos for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++)
1190 1.1 christos if (m->p_type == PT_LOAD)
1191 1.1 christos {
1192 1.1 christos int i;
1193 1.1 christos for (i = m->count - 1; i >= 0; --i)
1194 1.1 christos {
1195 1.1 christos struct bfd_link_order *order = m->sections[i]->map_head.link_order;
1196 1.1 christos
1197 1.1 christos while (order != NULL)
1198 1.1 christos {
1199 1.1 christos if (order->type == bfd_indirect_link_order)
1200 1.1 christos {
1201 1.1 christos asection *is = order->u.indirect.section;
1202 1.1 christos bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1203 1.1 christos if (flags & SHF_IA_64_NORECOV)
1204 1.1 christos {
1205 1.1 christos p->p_flags |= PF_IA_64_NORECOV;
1206 1.1 christos goto found;
1207 1.1 christos }
1208 1.1 christos }
1209 1.1 christos order = order->next;
1210 1.1 christos }
1211 1.1 christos }
1212 1.1 christos found:;
1213 1.1 christos }
1214 1.1 christos
1215 1.1 christos return TRUE;
1216 1.1 christos }
1217 1.1 christos
1218 1.1 christos /* According to the Tahoe assembler spec, all labels starting with a
1219 1.1 christos '.' are local. */
1220 1.1 christos
1221 1.1 christos static bfd_boolean
1222 1.1 christos elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
1223 1.1 christos const char *name)
1224 1.1 christos {
1225 1.1 christos return name[0] == '.';
1226 1.1 christos }
1227 1.1 christos
1228 1.1 christos /* Should we do dynamic things to this symbol? */
1229 1.1 christos
1230 1.1 christos static bfd_boolean
1231 1.1 christos elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h,
1232 1.1 christos struct bfd_link_info *info, int r_type)
1233 1.1 christos {
1234 1.1 christos bfd_boolean ignore_protected
1235 1.1 christos = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1236 1.1 christos || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1237 1.1 christos
1238 1.1 christos return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1239 1.1 christos }
1240 1.1 christos
1241 1.1 christos static struct bfd_hash_entry*
1243 1.1 christos elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry,
1244 1.1 christos struct bfd_hash_table *table,
1245 1.1 christos const char *string)
1246 1.1 christos {
1247 1.1 christos struct elfNN_ia64_link_hash_entry *ret;
1248 1.1 christos ret = (struct elfNN_ia64_link_hash_entry *) entry;
1249 1.1 christos
1250 1.1 christos /* Allocate the structure if it has not already been allocated by a
1251 1.1 christos subclass. */
1252 1.1 christos if (!ret)
1253 1.1 christos ret = bfd_hash_allocate (table, sizeof (*ret));
1254 1.1 christos
1255 1.1 christos if (!ret)
1256 1.1 christos return 0;
1257 1.1 christos
1258 1.1 christos /* Call the allocation method of the superclass. */
1259 1.1 christos ret = ((struct elfNN_ia64_link_hash_entry *)
1260 1.1 christos _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1261 1.1 christos table, string));
1262 1.1 christos
1263 1.1 christos ret->info = NULL;
1264 1.1 christos ret->count = 0;
1265 1.1 christos ret->sorted_count = 0;
1266 1.1 christos ret->size = 0;
1267 1.1 christos return (struct bfd_hash_entry *) ret;
1268 1.1 christos }
1269 1.1 christos
1270 1.1 christos static void
1271 1.1 christos elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info,
1272 1.1 christos struct elf_link_hash_entry *xdir,
1273 1.1 christos struct elf_link_hash_entry *xind)
1274 1.1 christos {
1275 1.1 christos struct elfNN_ia64_link_hash_entry *dir, *ind;
1276 1.1 christos
1277 1.1 christos dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1278 1.7 christos ind = (struct elfNN_ia64_link_hash_entry *) xind;
1279 1.7 christos
1280 1.1 christos /* Copy down any references that we may have already seen to the
1281 1.1 christos symbol which just became indirect. */
1282 1.1 christos
1283 1.1 christos if (dir->root.versioned != versioned_hidden)
1284 1.1 christos dir->root.ref_dynamic |= ind->root.ref_dynamic;
1285 1.1 christos dir->root.ref_regular |= ind->root.ref_regular;
1286 1.1 christos dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1287 1.1 christos dir->root.needs_plt |= ind->root.needs_plt;
1288 1.1 christos
1289 1.1 christos if (ind->root.root.type != bfd_link_hash_indirect)
1290 1.1 christos return;
1291 1.1 christos
1292 1.1 christos /* Copy over the got and plt data. This would have been done
1293 1.1 christos by check_relocs. */
1294 1.1 christos
1295 1.1 christos if (ind->info != NULL)
1296 1.1 christos {
1297 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1298 1.1 christos unsigned int count;
1299 1.1 christos
1300 1.1 christos if (dir->info)
1301 1.1 christos free (dir->info);
1302 1.1 christos
1303 1.1 christos dir->info = ind->info;
1304 1.1 christos dir->count = ind->count;
1305 1.1 christos dir->sorted_count = ind->sorted_count;
1306 1.1 christos dir->size = ind->size;
1307 1.1 christos
1308 1.1 christos ind->info = NULL;
1309 1.1 christos ind->count = 0;
1310 1.1 christos ind->sorted_count = 0;
1311 1.1 christos ind->size = 0;
1312 1.1 christos
1313 1.1 christos /* Fix up the dyn_sym_info pointers to the global symbol. */
1314 1.1 christos for (count = dir->count, dyn_i = dir->info;
1315 1.1 christos count != 0;
1316 1.1 christos count--, dyn_i++)
1317 1.1 christos dyn_i->h = &dir->root;
1318 1.1 christos }
1319 1.1 christos
1320 1.1 christos /* Copy over the dynindx. */
1321 1.1 christos
1322 1.1 christos if (ind->root.dynindx != -1)
1323 1.1 christos {
1324 1.1 christos if (dir->root.dynindx != -1)
1325 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1326 1.1 christos dir->root.dynstr_index);
1327 1.1 christos dir->root.dynindx = ind->root.dynindx;
1328 1.1 christos dir->root.dynstr_index = ind->root.dynstr_index;
1329 1.1 christos ind->root.dynindx = -1;
1330 1.1 christos ind->root.dynstr_index = 0;
1331 1.1 christos }
1332 1.1 christos }
1333 1.1 christos
1334 1.1 christos static void
1335 1.1 christos elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info,
1336 1.1 christos struct elf_link_hash_entry *xh,
1337 1.1 christos bfd_boolean force_local)
1338 1.1 christos {
1339 1.1 christos struct elfNN_ia64_link_hash_entry *h;
1340 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1341 1.1 christos unsigned int count;
1342 1.1 christos
1343 1.1 christos h = (struct elfNN_ia64_link_hash_entry *)xh;
1344 1.1 christos
1345 1.1 christos _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1346 1.1 christos
1347 1.1 christos for (count = h->count, dyn_i = h->info;
1348 1.1 christos count != 0;
1349 1.1 christos count--, dyn_i++)
1350 1.1 christos {
1351 1.1 christos dyn_i->want_plt2 = 0;
1352 1.1 christos dyn_i->want_plt = 0;
1353 1.1 christos }
1354 1.1 christos }
1355 1.1 christos
1356 1.1 christos /* Compute a hash of a local hash entry. */
1357 1.1 christos
1358 1.1 christos static hashval_t
1359 1.1 christos elfNN_ia64_local_htab_hash (const void *ptr)
1360 1.1 christos {
1361 1.1 christos struct elfNN_ia64_local_hash_entry *entry
1362 1.1 christos = (struct elfNN_ia64_local_hash_entry *) ptr;
1363 1.1 christos
1364 1.1 christos return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym);
1365 1.1 christos }
1366 1.1 christos
1367 1.1 christos /* Compare local hash entries. */
1368 1.1 christos
1369 1.1 christos static int
1370 1.1 christos elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2)
1371 1.1 christos {
1372 1.1 christos struct elfNN_ia64_local_hash_entry *entry1
1373 1.1 christos = (struct elfNN_ia64_local_hash_entry *) ptr1;
1374 1.1 christos struct elfNN_ia64_local_hash_entry *entry2
1375 1.1 christos = (struct elfNN_ia64_local_hash_entry *) ptr2;
1376 1.1 christos
1377 1.1 christos return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1378 1.1 christos }
1379 1.1 christos
1380 1.1 christos /* Free the global elfNN_ia64_dyn_sym_info array. */
1381 1.1 christos
1382 1.1 christos static bfd_boolean
1383 1.1 christos elfNN_ia64_global_dyn_info_free (void **xentry,
1384 1.1 christos void * unused ATTRIBUTE_UNUSED)
1385 1.1 christos {
1386 1.1 christos struct elfNN_ia64_link_hash_entry *entry
1387 1.1 christos = (struct elfNN_ia64_link_hash_entry *) xentry;
1388 1.1 christos
1389 1.1 christos if (entry->info)
1390 1.1 christos {
1391 1.1 christos free (entry->info);
1392 1.1 christos entry->info = NULL;
1393 1.1 christos entry->count = 0;
1394 1.1 christos entry->sorted_count = 0;
1395 1.1 christos entry->size = 0;
1396 1.1 christos }
1397 1.1 christos
1398 1.1 christos return TRUE;
1399 1.1 christos }
1400 1.1 christos
1401 1.1 christos /* Free the local elfNN_ia64_dyn_sym_info array. */
1402 1.1 christos
1403 1.1 christos static bfd_boolean
1404 1.1 christos elfNN_ia64_local_dyn_info_free (void **slot,
1405 1.1 christos void * unused ATTRIBUTE_UNUSED)
1406 1.1 christos {
1407 1.1 christos struct elfNN_ia64_local_hash_entry *entry
1408 1.1 christos = (struct elfNN_ia64_local_hash_entry *) *slot;
1409 1.1 christos
1410 1.1 christos if (entry->info)
1411 1.1 christos {
1412 1.1 christos free (entry->info);
1413 1.1 christos entry->info = NULL;
1414 1.1 christos entry->count = 0;
1415 1.1 christos entry->sorted_count = 0;
1416 1.1 christos entry->size = 0;
1417 1.1 christos }
1418 1.1 christos
1419 1.1 christos return TRUE;
1420 1.3 christos }
1421 1.1 christos
1422 1.1 christos /* Destroy IA-64 linker hash table. */
1423 1.3 christos
1424 1.1 christos static void
1425 1.1 christos elfNN_ia64_link_hash_table_free (bfd *obfd)
1426 1.1 christos {
1427 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info
1428 1.1 christos = (struct elfNN_ia64_link_hash_table *) obfd->link.hash;
1429 1.1 christos if (ia64_info->loc_hash_table)
1430 1.1 christos {
1431 1.1 christos htab_traverse (ia64_info->loc_hash_table,
1432 1.1 christos elfNN_ia64_local_dyn_info_free, NULL);
1433 1.1 christos htab_delete (ia64_info->loc_hash_table);
1434 1.3 christos }
1435 1.3 christos if (ia64_info->loc_hash_memory)
1436 1.3 christos objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1437 1.3 christos elf_link_hash_traverse (&ia64_info->root,
1438 1.3 christos elfNN_ia64_global_dyn_info_free, NULL);
1439 1.3 christos _bfd_elf_link_hash_table_free (obfd);
1440 1.3 christos }
1441 1.3 christos
1442 1.3 christos /* Create the derived linker hash table. The IA-64 ELF port uses this
1443 1.3 christos derived hash table to keep information specific to the IA-64 ElF
1444 1.3 christos linker (without using static variables). */
1445 1.3 christos
1446 1.3 christos static struct bfd_link_hash_table *
1447 1.3 christos elfNN_ia64_hash_table_create (bfd *abfd)
1448 1.3 christos {
1449 1.3 christos struct elfNN_ia64_link_hash_table *ret;
1450 1.3 christos
1451 1.3 christos ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1452 1.3 christos if (!ret)
1453 1.3 christos return NULL;
1454 1.3 christos
1455 1.3 christos if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1456 1.3 christos elfNN_ia64_new_elf_hash_entry,
1457 1.3 christos sizeof (struct elfNN_ia64_link_hash_entry),
1458 1.3 christos IA64_ELF_DATA))
1459 1.3 christos {
1460 1.3 christos free (ret);
1461 1.3 christos return NULL;
1462 1.3 christos }
1463 1.3 christos
1464 1.3 christos ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1465 1.3 christos elfNN_ia64_local_htab_eq, NULL);
1466 1.3 christos ret->loc_hash_memory = objalloc_create ();
1467 1.3 christos if (!ret->loc_hash_table || !ret->loc_hash_memory)
1468 1.3 christos {
1469 1.3 christos elfNN_ia64_link_hash_table_free (abfd);
1470 1.1 christos return NULL;
1471 1.1 christos }
1472 1.1 christos ret->root.root.hash_table_free = elfNN_ia64_link_hash_table_free;
1473 1.1 christos
1474 1.1 christos return &ret->root.root;
1475 1.1 christos }
1476 1.1 christos
1477 1.1 christos /* Traverse both local and global hash tables. */
1478 1.1 christos
1479 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data
1480 1.1 christos {
1481 1.1 christos bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *);
1482 1.1 christos void * data;
1483 1.1 christos };
1484 1.1 christos
1485 1.1 christos static bfd_boolean
1486 1.1 christos elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry,
1487 1.1 christos void * xdata)
1488 1.1 christos {
1489 1.1 christos struct elfNN_ia64_link_hash_entry *entry
1490 1.1 christos = (struct elfNN_ia64_link_hash_entry *) xentry;
1491 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data *data
1492 1.1 christos = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1493 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1494 1.1 christos unsigned int count;
1495 1.1 christos
1496 1.1 christos for (count = entry->count, dyn_i = entry->info;
1497 1.1 christos count != 0;
1498 1.1 christos count--, dyn_i++)
1499 1.1 christos if (! (*data->func) (dyn_i, data->data))
1500 1.1 christos return FALSE;
1501 1.1 christos return TRUE;
1502 1.1 christos }
1503 1.1 christos
1504 1.1 christos static bfd_boolean
1505 1.1 christos elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata)
1506 1.1 christos {
1507 1.1 christos struct elfNN_ia64_local_hash_entry *entry
1508 1.1 christos = (struct elfNN_ia64_local_hash_entry *) *slot;
1509 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data *data
1510 1.1 christos = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1511 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1512 1.1 christos unsigned int count;
1513 1.1 christos
1514 1.1 christos for (count = entry->count, dyn_i = entry->info;
1515 1.1 christos count != 0;
1516 1.1 christos count--, dyn_i++)
1517 1.1 christos if (! (*data->func) (dyn_i, data->data))
1518 1.1 christos return FALSE;
1519 1.1 christos return TRUE;
1520 1.1 christos }
1521 1.1 christos
1522 1.1 christos static void
1523 1.1 christos elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info,
1524 1.1 christos bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
1525 1.1 christos void * data)
1526 1.1 christos {
1527 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data xdata;
1528 1.1 christos
1529 1.1 christos xdata.func = func;
1530 1.1 christos xdata.data = data;
1531 1.1 christos
1532 1.1 christos elf_link_hash_traverse (&ia64_info->root,
1533 1.1 christos elfNN_ia64_global_dyn_sym_thunk, &xdata);
1534 1.1 christos htab_traverse (ia64_info->loc_hash_table,
1535 1.1 christos elfNN_ia64_local_dyn_sym_thunk, &xdata);
1536 1.1 christos }
1537 1.1 christos
1538 1.1 christos static bfd_boolean
1540 1.1 christos elfNN_ia64_create_dynamic_sections (bfd *abfd,
1541 1.1 christos struct bfd_link_info *info)
1542 1.1 christos {
1543 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
1544 1.1 christos asection *s;
1545 1.1 christos
1546 1.1 christos if (! _bfd_elf_create_dynamic_sections (abfd, info))
1547 1.1 christos return FALSE;
1548 1.1 christos
1549 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
1550 1.1 christos if (ia64_info == NULL)
1551 1.1 christos return FALSE;
1552 1.1 christos
1553 1.1 christos {
1554 1.1 christos flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot);
1555 1.1 christos bfd_set_section_flags (abfd, ia64_info->root.sgot,
1556 1.1 christos SEC_SMALL_DATA | flags);
1557 1.1 christos /* The .got section is always aligned at 8 bytes. */
1558 1.1 christos if (! bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3))
1559 1.1 christos return FALSE;
1560 1.1 christos }
1561 1.1 christos
1562 1.1 christos if (!get_pltoff (abfd, info, ia64_info))
1563 1.1 christos return FALSE;
1564 1.1 christos
1565 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff",
1566 1.1 christos (SEC_ALLOC | SEC_LOAD
1567 1.1 christos | SEC_HAS_CONTENTS
1568 1.1 christos | SEC_IN_MEMORY
1569 1.1 christos | SEC_LINKER_CREATED
1570 1.1 christos | SEC_READONLY));
1571 1.1 christos if (s == NULL
1572 1.1 christos || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN))
1573 1.1 christos return FALSE;
1574 1.1 christos ia64_info->rel_pltoff_sec = s;
1575 1.1 christos
1576 1.1 christos return TRUE;
1577 1.1 christos }
1578 1.1 christos
1579 1.1 christos /* Find and/or create a hash entry for local symbol. */
1580 1.1 christos static struct elfNN_ia64_local_hash_entry *
1581 1.1 christos get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info,
1582 1.1 christos bfd *abfd, const Elf_Internal_Rela *rel,
1583 1.1 christos bfd_boolean create)
1584 1.1 christos {
1585 1.1 christos struct elfNN_ia64_local_hash_entry e, *ret;
1586 1.1 christos asection *sec = abfd->sections;
1587 1.1 christos hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
1588 1.1 christos ELFNN_R_SYM (rel->r_info));
1589 1.1 christos void **slot;
1590 1.1 christos
1591 1.1 christos e.id = sec->id;
1592 1.1 christos e.r_sym = ELFNN_R_SYM (rel->r_info);
1593 1.1 christos slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
1594 1.1 christos create ? INSERT : NO_INSERT);
1595 1.1 christos
1596 1.1 christos if (!slot)
1597 1.1 christos return NULL;
1598 1.1 christos
1599 1.1 christos if (*slot)
1600 1.1 christos return (struct elfNN_ia64_local_hash_entry *) *slot;
1601 1.1 christos
1602 1.1 christos ret = (struct elfNN_ia64_local_hash_entry *)
1603 1.1 christos objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
1604 1.1 christos sizeof (struct elfNN_ia64_local_hash_entry));
1605 1.1 christos if (ret)
1606 1.1 christos {
1607 1.1 christos memset (ret, 0, sizeof (*ret));
1608 1.1 christos ret->id = sec->id;
1609 1.1 christos ret->r_sym = ELFNN_R_SYM (rel->r_info);
1610 1.1 christos *slot = ret;
1611 1.1 christos }
1612 1.1 christos return ret;
1613 1.1 christos }
1614 1.1 christos
1615 1.1 christos /* Used to sort elfNN_ia64_dyn_sym_info array. */
1616 1.1 christos
1617 1.1 christos static int
1618 1.1 christos addend_compare (const void *xp, const void *yp)
1619 1.1 christos {
1620 1.1 christos const struct elfNN_ia64_dyn_sym_info *x
1621 1.1 christos = (const struct elfNN_ia64_dyn_sym_info *) xp;
1622 1.1 christos const struct elfNN_ia64_dyn_sym_info *y
1623 1.1 christos = (const struct elfNN_ia64_dyn_sym_info *) yp;
1624 1.1 christos
1625 1.1 christos return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0;
1626 1.1 christos }
1627 1.1 christos
1628 1.1 christos /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1629 1.1 christos
1630 1.1 christos static unsigned int
1631 1.1 christos sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info,
1632 1.1 christos unsigned int count)
1633 1.1 christos {
1634 1.1 christos bfd_vma curr, prev, got_offset;
1635 1.1 christos unsigned int i, kept, dupes, diff, dest, src, len;
1636 1.1 christos
1637 1.1 christos qsort (info, count, sizeof (*info), addend_compare);
1638 1.1 christos
1639 1.1 christos /* Find the first duplicate. */
1640 1.1 christos prev = info [0].addend;
1641 1.1 christos got_offset = info [0].got_offset;
1642 1.1 christos for (i = 1; i < count; i++)
1643 1.1 christos {
1644 1.1 christos curr = info [i].addend;
1645 1.1 christos if (curr == prev)
1646 1.1 christos {
1647 1.1 christos /* For duplicates, make sure that GOT_OFFSET is valid. */
1648 1.1 christos if (got_offset == (bfd_vma) -1)
1649 1.1 christos got_offset = info [i].got_offset;
1650 1.1 christos break;
1651 1.1 christos }
1652 1.1 christos got_offset = info [i].got_offset;
1653 1.1 christos prev = curr;
1654 1.1 christos }
1655 1.1 christos
1656 1.1 christos /* We may move a block of elements to here. */
1657 1.1 christos dest = i++;
1658 1.1 christos
1659 1.1 christos /* Remove duplicates. */
1660 1.1 christos if (i < count)
1661 1.1 christos {
1662 1.1 christos while (i < count)
1663 1.1 christos {
1664 1.1 christos /* For duplicates, make sure that the kept one has a valid
1665 1.1 christos got_offset. */
1666 1.1 christos kept = dest - 1;
1667 1.1 christos if (got_offset != (bfd_vma) -1)
1668 1.1 christos info [kept].got_offset = got_offset;
1669 1.1 christos
1670 1.1 christos curr = info [i].addend;
1671 1.1 christos got_offset = info [i].got_offset;
1672 1.1 christos
1673 1.1 christos /* Move a block of elements whose first one is different from
1674 1.1 christos the previous. */
1675 1.1 christos if (curr == prev)
1676 1.1 christos {
1677 1.1 christos for (src = i + 1; src < count; src++)
1678 1.1 christos {
1679 1.1 christos if (info [src].addend != curr)
1680 1.1 christos break;
1681 1.1 christos /* For duplicates, make sure that GOT_OFFSET is
1682 1.1 christos valid. */
1683 1.1 christos if (got_offset == (bfd_vma) -1)
1684 1.1 christos got_offset = info [src].got_offset;
1685 1.1 christos }
1686 1.1 christos
1687 1.1 christos /* Make sure that the kept one has a valid got_offset. */
1688 1.1 christos if (got_offset != (bfd_vma) -1)
1689 1.1 christos info [kept].got_offset = got_offset;
1690 1.1 christos }
1691 1.1 christos else
1692 1.1 christos src = i;
1693 1.1 christos
1694 1.1 christos if (src >= count)
1695 1.1 christos break;
1696 1.1 christos
1697 1.1 christos /* Find the next duplicate. SRC will be kept. */
1698 1.1 christos prev = info [src].addend;
1699 1.1 christos got_offset = info [src].got_offset;
1700 1.1 christos for (dupes = src + 1; dupes < count; dupes ++)
1701 1.1 christos {
1702 1.1 christos curr = info [dupes].addend;
1703 1.1 christos if (curr == prev)
1704 1.1 christos {
1705 1.1 christos /* Make sure that got_offset is valid. */
1706 1.1 christos if (got_offset == (bfd_vma) -1)
1707 1.1 christos got_offset = info [dupes].got_offset;
1708 1.1 christos
1709 1.1 christos /* For duplicates, make sure that the kept one has
1710 1.1 christos a valid got_offset. */
1711 1.1 christos if (got_offset != (bfd_vma) -1)
1712 1.1 christos info [dupes - 1].got_offset = got_offset;
1713 1.1 christos break;
1714 1.1 christos }
1715 1.1 christos got_offset = info [dupes].got_offset;
1716 1.1 christos prev = curr;
1717 1.1 christos }
1718 1.1 christos
1719 1.1 christos /* How much to move. */
1720 1.1 christos len = dupes - src;
1721 1.1 christos i = dupes + 1;
1722 1.1 christos
1723 1.1 christos if (len == 1 && dupes < count)
1724 1.1 christos {
1725 1.1 christos /* If we only move 1 element, we combine it with the next
1726 1.1 christos one. There must be at least a duplicate. Find the
1727 1.1 christos next different one. */
1728 1.1 christos for (diff = dupes + 1, src++; diff < count; diff++, src++)
1729 1.1 christos {
1730 1.1 christos if (info [diff].addend != curr)
1731 1.1 christos break;
1732 1.1 christos /* Make sure that got_offset is valid. */
1733 1.1 christos if (got_offset == (bfd_vma) -1)
1734 1.1 christos got_offset = info [diff].got_offset;
1735 1.1 christos }
1736 1.1 christos
1737 1.1 christos /* Makre sure that the last duplicated one has an valid
1738 1.1 christos offset. */
1739 1.1 christos BFD_ASSERT (curr == prev);
1740 1.1 christos if (got_offset != (bfd_vma) -1)
1741 1.1 christos info [diff - 1].got_offset = got_offset;
1742 1.1 christos
1743 1.1 christos if (diff < count)
1744 1.1 christos {
1745 1.1 christos /* Find the next duplicate. Track the current valid
1746 1.1 christos offset. */
1747 1.1 christos prev = info [diff].addend;
1748 1.1 christos got_offset = info [diff].got_offset;
1749 1.1 christos for (dupes = diff + 1; dupes < count; dupes ++)
1750 1.1 christos {
1751 1.1 christos curr = info [dupes].addend;
1752 1.1 christos if (curr == prev)
1753 1.1 christos {
1754 1.1 christos /* For duplicates, make sure that GOT_OFFSET
1755 1.1 christos is valid. */
1756 1.1 christos if (got_offset == (bfd_vma) -1)
1757 1.1 christos got_offset = info [dupes].got_offset;
1758 1.1 christos break;
1759 1.1 christos }
1760 1.1 christos got_offset = info [dupes].got_offset;
1761 1.1 christos prev = curr;
1762 1.1 christos diff++;
1763 1.1 christos }
1764 1.1 christos
1765 1.1 christos len = diff - src + 1;
1766 1.1 christos i = diff + 1;
1767 1.1 christos }
1768 1.1 christos }
1769 1.1 christos
1770 1.1 christos memmove (&info [dest], &info [src], len * sizeof (*info));
1771 1.1 christos
1772 1.1 christos dest += len;
1773 1.1 christos }
1774 1.1 christos
1775 1.1 christos count = dest;
1776 1.1 christos }
1777 1.1 christos else
1778 1.1 christos {
1779 1.1 christos /* When we get here, either there is no duplicate at all or
1780 1.1 christos the only duplicate is the last element. */
1781 1.1 christos if (dest < count)
1782 1.1 christos {
1783 1.1 christos /* If the last element is a duplicate, make sure that the
1784 1.1 christos kept one has a valid got_offset. We also update count. */
1785 1.1 christos if (got_offset != (bfd_vma) -1)
1786 1.1 christos info [dest - 1].got_offset = got_offset;
1787 1.1 christos count = dest;
1788 1.1 christos }
1789 1.1 christos }
1790 1.1 christos
1791 1.1 christos return count;
1792 1.1 christos }
1793 1.1 christos
1794 1.1 christos /* Find and/or create a descriptor for dynamic symbol info. This will
1795 1.1 christos vary based on global or local symbol, and the addend to the reloc.
1796 1.1 christos
1797 1.1 christos We don't sort when inserting. Also, we sort and eliminate
1798 1.1 christos duplicates if there is an unsorted section. Typically, this will
1799 1.1 christos only happen once, because we do all insertions before lookups. We
1800 1.1 christos then use bsearch to do a lookup. This also allows lookups to be
1801 1.1 christos fast. So we have fast insertion (O(log N) due to duplicate check),
1802 1.1 christos fast lookup (O(log N)) and one sort (O(N log N) expected time).
1803 1.1 christos Previously, all lookups were O(N) because of the use of the linked
1804 1.1 christos list and also all insertions were O(N) because of the check for
1805 1.1 christos duplicates. There are some complications here because the array
1806 1.1 christos size grows occasionally, which may add an O(N) factor, but this
1807 1.1 christos should be rare. Also, we free the excess array allocation, which
1808 1.1 christos requires a copy which is O(N), but this only happens once. */
1809 1.1 christos
1810 1.1 christos static struct elfNN_ia64_dyn_sym_info *
1811 1.1 christos get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info,
1812 1.1 christos struct elf_link_hash_entry *h, bfd *abfd,
1813 1.1 christos const Elf_Internal_Rela *rel, bfd_boolean create)
1814 1.1 christos {
1815 1.1 christos struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key;
1816 1.1 christos unsigned int *count_p, *sorted_count_p, *size_p;
1817 1.1 christos unsigned int count, sorted_count, size;
1818 1.1 christos bfd_vma addend = rel ? rel->r_addend : 0;
1819 1.1 christos bfd_size_type amt;
1820 1.1 christos
1821 1.1 christos if (h)
1822 1.1 christos {
1823 1.1 christos struct elfNN_ia64_link_hash_entry *global_h;
1824 1.1 christos
1825 1.1 christos global_h = (struct elfNN_ia64_link_hash_entry *) h;
1826 1.1 christos info_p = &global_h->info;
1827 1.1 christos count_p = &global_h->count;
1828 1.1 christos sorted_count_p = &global_h->sorted_count;
1829 1.1 christos size_p = &global_h->size;
1830 1.1 christos }
1831 1.1 christos else
1832 1.1 christos {
1833 1.1 christos struct elfNN_ia64_local_hash_entry *loc_h;
1834 1.1 christos
1835 1.1 christos loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1836 1.1 christos if (!loc_h)
1837 1.1 christos {
1838 1.1 christos BFD_ASSERT (!create);
1839 1.1 christos return NULL;
1840 1.1 christos }
1841 1.1 christos
1842 1.1 christos info_p = &loc_h->info;
1843 1.1 christos count_p = &loc_h->count;
1844 1.1 christos sorted_count_p = &loc_h->sorted_count;
1845 1.1 christos size_p = &loc_h->size;
1846 1.1 christos }
1847 1.1 christos
1848 1.1 christos count = *count_p;
1849 1.1 christos sorted_count = *sorted_count_p;
1850 1.1 christos size = *size_p;
1851 1.1 christos info = *info_p;
1852 1.1 christos if (create)
1853 1.1 christos {
1854 1.1 christos /* When we create the array, we don't check for duplicates,
1855 1.1 christos except in the previously sorted section if one exists, and
1856 1.1 christos against the last inserted entry. This allows insertions to
1857 1.1 christos be fast. */
1858 1.1 christos if (info)
1859 1.1 christos {
1860 1.1 christos if (sorted_count)
1861 1.1 christos {
1862 1.1 christos /* Try bsearch first on the sorted section. */
1863 1.1 christos key.addend = addend;
1864 1.1 christos dyn_i = bsearch (&key, info, sorted_count,
1865 1.1 christos sizeof (*info), addend_compare);
1866 1.1 christos
1867 1.1 christos if (dyn_i)
1868 1.1 christos {
1869 1.1 christos return dyn_i;
1870 1.1 christos }
1871 1.1 christos }
1872 1.1 christos
1873 1.1 christos /* Do a quick check for the last inserted entry. */
1874 1.1 christos dyn_i = info + count - 1;
1875 1.1 christos if (dyn_i->addend == addend)
1876 1.1 christos {
1877 1.1 christos return dyn_i;
1878 1.1 christos }
1879 1.1 christos }
1880 1.1 christos
1881 1.1 christos if (size == 0)
1882 1.1 christos {
1883 1.1 christos /* It is the very first element. We create the array of size
1884 1.1 christos 1. */
1885 1.1 christos size = 1;
1886 1.1 christos amt = size * sizeof (*info);
1887 1.1 christos info = bfd_malloc (amt);
1888 1.1 christos }
1889 1.1 christos else if (size <= count)
1890 1.1 christos {
1891 1.1 christos /* We double the array size every time when we reach the
1892 1.1 christos size limit. */
1893 1.1 christos size += size;
1894 1.1 christos amt = size * sizeof (*info);
1895 1.1 christos info = bfd_realloc (info, amt);
1896 1.1 christos }
1897 1.1 christos else
1898 1.1 christos goto has_space;
1899 1.1 christos
1900 1.1 christos if (info == NULL)
1901 1.1 christos return NULL;
1902 1.1 christos *size_p = size;
1903 1.1 christos *info_p = info;
1904 1.1 christos
1905 1.1 christos has_space:
1906 1.1 christos /* Append the new one to the array. */
1907 1.1 christos dyn_i = info + count;
1908 1.1 christos memset (dyn_i, 0, sizeof (*dyn_i));
1909 1.1 christos dyn_i->got_offset = (bfd_vma) -1;
1910 1.1 christos dyn_i->addend = addend;
1911 1.1 christos
1912 1.1 christos /* We increment count only since the new ones are unsorted and
1913 1.1 christos may have duplicate. */
1914 1.1 christos (*count_p)++;
1915 1.1 christos }
1916 1.1 christos else
1917 1.1 christos {
1918 1.1 christos /* It is a lookup without insertion. Sort array if part of the
1919 1.1 christos array isn't sorted. */
1920 1.1 christos if (count != sorted_count)
1921 1.1 christos {
1922 1.1 christos count = sort_dyn_sym_info (info, count);
1923 1.1 christos *count_p = count;
1924 1.1 christos *sorted_count_p = count;
1925 1.1 christos }
1926 1.1 christos
1927 1.1 christos /* Free unused memory. */
1928 1.1 christos if (size != count)
1929 1.1 christos {
1930 1.1 christos amt = count * sizeof (*info);
1931 1.1 christos info = bfd_malloc (amt);
1932 1.1 christos if (info != NULL)
1933 1.1 christos {
1934 1.1 christos memcpy (info, *info_p, amt);
1935 1.1 christos free (*info_p);
1936 1.1 christos *size_p = count;
1937 1.1 christos *info_p = info;
1938 1.1 christos }
1939 1.1 christos }
1940 1.1 christos
1941 1.1 christos key.addend = addend;
1942 1.1 christos dyn_i = bsearch (&key, info, count,
1943 1.1 christos sizeof (*info), addend_compare);
1944 1.1 christos }
1945 1.1 christos
1946 1.1 christos return dyn_i;
1947 1.1 christos }
1948 1.1 christos
1949 1.1 christos static asection *
1950 1.1 christos get_got (bfd *abfd, struct bfd_link_info *info,
1951 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info)
1952 1.1 christos {
1953 1.1 christos asection *got;
1954 1.1 christos bfd *dynobj;
1955 1.1 christos
1956 1.1 christos got = ia64_info->root.sgot;
1957 1.1 christos if (!got)
1958 1.1 christos {
1959 1.1 christos flagword flags;
1960 1.1 christos
1961 1.1 christos dynobj = ia64_info->root.dynobj;
1962 1.1 christos if (!dynobj)
1963 1.1 christos ia64_info->root.dynobj = dynobj = abfd;
1964 1.1 christos if (!_bfd_elf_create_got_section (dynobj, info))
1965 1.1 christos return NULL;
1966 1.1 christos
1967 1.1 christos got = ia64_info->root.sgot;
1968 1.1 christos
1969 1.1 christos /* The .got section is always aligned at 8 bytes. */
1970 1.1 christos if (!bfd_set_section_alignment (abfd, got, 3))
1971 1.1 christos return NULL;
1972 1.1 christos
1973 1.1 christos flags = bfd_get_section_flags (abfd, got);
1974 1.1 christos if (! bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags))
1975 1.1 christos return NULL;
1976 1.1 christos }
1977 1.1 christos
1978 1.1 christos return got;
1979 1.1 christos }
1980 1.1 christos
1981 1.1 christos /* Create function descriptor section (.opd). This section is called .opd
1982 1.1 christos because it contains "official procedure descriptors". The "official"
1983 1.1 christos refers to the fact that these descriptors are used when taking the address
1984 1.1 christos of a procedure, thus ensuring a unique address for each procedure. */
1985 1.1 christos
1986 1.1 christos static asection *
1987 1.1 christos get_fptr (bfd *abfd, struct bfd_link_info *info,
1988 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info)
1989 1.1 christos {
1990 1.1 christos asection *fptr;
1991 1.1 christos bfd *dynobj;
1992 1.1 christos
1993 1.1 christos fptr = ia64_info->fptr_sec;
1994 1.1 christos if (!fptr)
1995 1.1 christos {
1996 1.1 christos dynobj = ia64_info->root.dynobj;
1997 1.1 christos if (!dynobj)
1998 1.1 christos ia64_info->root.dynobj = dynobj = abfd;
1999 1.6 christos
2000 1.6 christos fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd",
2001 1.1 christos (SEC_ALLOC
2002 1.1 christos | SEC_LOAD
2003 1.1 christos | SEC_HAS_CONTENTS
2004 1.1 christos | SEC_IN_MEMORY
2005 1.1 christos | (bfd_link_pie (info)
2006 1.1 christos ? 0 : SEC_READONLY)
2007 1.1 christos | SEC_LINKER_CREATED));
2008 1.1 christos if (!fptr
2009 1.1 christos || !bfd_set_section_alignment (abfd, fptr, 4))
2010 1.1 christos {
2011 1.6 christos BFD_ASSERT (0);
2012 1.1 christos return NULL;
2013 1.1 christos }
2014 1.1 christos
2015 1.1 christos ia64_info->fptr_sec = fptr;
2016 1.1 christos
2017 1.1 christos if (bfd_link_pie (info))
2018 1.1 christos {
2019 1.1 christos asection *fptr_rel;
2020 1.1 christos fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd",
2021 1.1 christos (SEC_ALLOC | SEC_LOAD
2022 1.1 christos | SEC_HAS_CONTENTS
2023 1.1 christos | SEC_IN_MEMORY
2024 1.1 christos | SEC_LINKER_CREATED
2025 1.1 christos | SEC_READONLY));
2026 1.1 christos if (fptr_rel == NULL
2027 1.1 christos || !bfd_set_section_alignment (abfd, fptr_rel,
2028 1.1 christos LOG_SECTION_ALIGN))
2029 1.1 christos {
2030 1.1 christos BFD_ASSERT (0);
2031 1.1 christos return NULL;
2032 1.1 christos }
2033 1.1 christos
2034 1.1 christos ia64_info->rel_fptr_sec = fptr_rel;
2035 1.1 christos }
2036 1.1 christos }
2037 1.1 christos
2038 1.1 christos return fptr;
2039 1.1 christos }
2040 1.1 christos
2041 1.1 christos static asection *
2042 1.1 christos get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED,
2043 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info)
2044 1.1 christos {
2045 1.1 christos asection *pltoff;
2046 1.1 christos bfd *dynobj;
2047 1.1 christos
2048 1.1 christos pltoff = ia64_info->pltoff_sec;
2049 1.1 christos if (!pltoff)
2050 1.1 christos {
2051 1.1 christos dynobj = ia64_info->root.dynobj;
2052 1.1 christos if (!dynobj)
2053 1.1 christos ia64_info->root.dynobj = dynobj = abfd;
2054 1.1 christos
2055 1.1 christos pltoff = bfd_make_section_anyway_with_flags (dynobj,
2056 1.1 christos ELF_STRING_ia64_pltoff,
2057 1.1 christos (SEC_ALLOC
2058 1.1 christos | SEC_LOAD
2059 1.1 christos | SEC_HAS_CONTENTS
2060 1.1 christos | SEC_IN_MEMORY
2061 1.1 christos | SEC_SMALL_DATA
2062 1.1 christos | SEC_LINKER_CREATED));
2063 1.1 christos if (!pltoff
2064 1.1 christos || !bfd_set_section_alignment (abfd, pltoff, 4))
2065 1.1 christos {
2066 1.1 christos BFD_ASSERT (0);
2067 1.1 christos return NULL;
2068 1.1 christos }
2069 1.1 christos
2070 1.1 christos ia64_info->pltoff_sec = pltoff;
2071 1.1 christos }
2072 1.1 christos
2073 1.1 christos return pltoff;
2074 1.1 christos }
2075 1.1 christos
2076 1.1 christos static asection *
2077 1.1 christos get_reloc_section (bfd *abfd,
2078 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info,
2079 1.1 christos asection *sec, bfd_boolean create)
2080 1.1 christos {
2081 1.1 christos const char *srel_name;
2082 1.1 christos asection *srel;
2083 1.1 christos bfd *dynobj;
2084 1.1 christos
2085 1.1 christos srel_name = (bfd_elf_string_from_elf_section
2086 1.1 christos (abfd, elf_elfheader(abfd)->e_shstrndx,
2087 1.1 christos _bfd_elf_single_rel_hdr (sec)->sh_name));
2088 1.1 christos if (srel_name == NULL)
2089 1.1 christos return NULL;
2090 1.1 christos
2091 1.1 christos dynobj = ia64_info->root.dynobj;
2092 1.1 christos if (!dynobj)
2093 1.1 christos ia64_info->root.dynobj = dynobj = abfd;
2094 1.1 christos
2095 1.1 christos srel = bfd_get_linker_section (dynobj, srel_name);
2096 1.1 christos if (srel == NULL && create)
2097 1.1 christos {
2098 1.1 christos srel = bfd_make_section_anyway_with_flags (dynobj, srel_name,
2099 1.1 christos (SEC_ALLOC | SEC_LOAD
2100 1.1 christos | SEC_HAS_CONTENTS
2101 1.1 christos | SEC_IN_MEMORY
2102 1.1 christos | SEC_LINKER_CREATED
2103 1.1 christos | SEC_READONLY));
2104 1.1 christos if (srel == NULL
2105 1.1 christos || !bfd_set_section_alignment (dynobj, srel,
2106 1.1 christos LOG_SECTION_ALIGN))
2107 1.1 christos return NULL;
2108 1.1 christos }
2109 1.1 christos
2110 1.1 christos return srel;
2111 1.1 christos }
2112 1.1 christos
2113 1.1 christos static bfd_boolean
2114 1.1 christos count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2115 1.1 christos asection *srel, int type, bfd_boolean reltext)
2116 1.1 christos {
2117 1.1 christos struct elfNN_ia64_dyn_reloc_entry *rent;
2118 1.1 christos
2119 1.1 christos for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2120 1.1 christos if (rent->srel == srel && rent->type == type)
2121 1.1 christos break;
2122 1.1 christos
2123 1.1 christos if (!rent)
2124 1.1 christos {
2125 1.1 christos rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2126 1.1 christos bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2127 1.1 christos if (!rent)
2128 1.1 christos return FALSE;
2129 1.1 christos
2130 1.1 christos rent->next = dyn_i->reloc_entries;
2131 1.1 christos rent->srel = srel;
2132 1.1 christos rent->type = type;
2133 1.1 christos rent->count = 0;
2134 1.1 christos dyn_i->reloc_entries = rent;
2135 1.1 christos }
2136 1.1 christos rent->reltext = reltext;
2137 1.1 christos rent->count++;
2138 1.1 christos
2139 1.1 christos return TRUE;
2140 1.1 christos }
2141 1.1 christos
2142 1.1 christos static bfd_boolean
2143 1.1 christos elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2144 1.1 christos asection *sec,
2145 1.1 christos const Elf_Internal_Rela *relocs)
2146 1.1 christos {
2147 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2148 1.1 christos const Elf_Internal_Rela *relend;
2149 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2150 1.1 christos const Elf_Internal_Rela *rel;
2151 1.1 christos asection *got, *fptr, *srel, *pltoff;
2152 1.1 christos enum {
2153 1.1 christos NEED_GOT = 1,
2154 1.1 christos NEED_GOTX = 2,
2155 1.1 christos NEED_FPTR = 4,
2156 1.1 christos NEED_PLTOFF = 8,
2157 1.1 christos NEED_MIN_PLT = 16,
2158 1.1 christos NEED_FULL_PLT = 32,
2159 1.1 christos NEED_DYNREL = 64,
2160 1.1 christos NEED_LTOFF_FPTR = 128,
2161 1.1 christos NEED_TPREL = 256,
2162 1.1 christos NEED_DTPMOD = 512,
2163 1.1 christos NEED_DTPREL = 1024
2164 1.6 christos };
2165 1.1 christos int need_entry;
2166 1.1 christos struct elf_link_hash_entry *h;
2167 1.1 christos unsigned long r_symndx;
2168 1.1 christos bfd_boolean maybe_dynamic;
2169 1.1 christos
2170 1.1 christos if (bfd_link_relocatable (info))
2171 1.1 christos return TRUE;
2172 1.1 christos
2173 1.1 christos symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2174 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
2175 1.1 christos if (ia64_info == NULL)
2176 1.1 christos return FALSE;
2177 1.1 christos
2178 1.1 christos got = fptr = srel = pltoff = NULL;
2179 1.1 christos
2180 1.1 christos relend = relocs + sec->reloc_count;
2181 1.1 christos
2182 1.1 christos /* We scan relocations first to create dynamic relocation arrays. We
2183 1.1 christos modified get_dyn_sym_info to allow fast insertion and support fast
2184 1.1 christos lookup in the next loop. */
2185 1.1 christos for (rel = relocs; rel < relend; ++rel)
2186 1.1 christos {
2187 1.1 christos r_symndx = ELFNN_R_SYM (rel->r_info);
2188 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
2189 1.1 christos {
2190 1.1 christos long indx = r_symndx - symtab_hdr->sh_info;
2191 1.1 christos h = elf_sym_hashes (abfd)[indx];
2192 1.1 christos while (h->root.type == bfd_link_hash_indirect
2193 1.1 christos || h->root.type == bfd_link_hash_warning)
2194 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2195 1.1 christos }
2196 1.1 christos else
2197 1.6 christos h = NULL;
2198 1.1 christos
2199 1.1 christos /* We can only get preliminary data on whether a symbol is
2200 1.1 christos locally or externally defined, as not all of the input files
2201 1.1 christos have yet been processed. Do something with what we know, as
2202 1.1 christos this may help reduce memory usage and processing time later. */
2203 1.1 christos maybe_dynamic = (h && ((!bfd_link_executable (info)
2204 1.1 christos && (!SYMBOLIC_BIND (info, h)
2205 1.1 christos || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2206 1.1 christos || !h->def_regular
2207 1.1 christos || h->root.type == bfd_link_hash_defweak));
2208 1.6 christos
2209 1.1 christos need_entry = 0;
2210 1.1 christos switch (ELFNN_R_TYPE (rel->r_info))
2211 1.1 christos {
2212 1.1 christos case R_IA64_TPREL64MSB:
2213 1.1 christos case R_IA64_TPREL64LSB:
2214 1.6 christos if (bfd_link_pic (info) || maybe_dynamic)
2215 1.1 christos need_entry = NEED_DYNREL;
2216 1.1 christos break;
2217 1.1 christos
2218 1.1 christos case R_IA64_LTOFF_TPREL22:
2219 1.1 christos need_entry = NEED_TPREL;
2220 1.1 christos if (bfd_link_pic (info))
2221 1.1 christos info->flags |= DF_STATIC_TLS;
2222 1.6 christos break;
2223 1.1 christos
2224 1.1 christos case R_IA64_DTPREL32MSB:
2225 1.1 christos case R_IA64_DTPREL32LSB:
2226 1.1 christos case R_IA64_DTPREL64MSB:
2227 1.1 christos case R_IA64_DTPREL64LSB:
2228 1.1 christos if (bfd_link_pic (info) || maybe_dynamic)
2229 1.1 christos need_entry = NEED_DYNREL;
2230 1.1 christos break;
2231 1.1 christos
2232 1.6 christos case R_IA64_LTOFF_DTPREL22:
2233 1.1 christos need_entry = NEED_DTPREL;
2234 1.1 christos break;
2235 1.1 christos
2236 1.1 christos case R_IA64_DTPMOD64MSB:
2237 1.1 christos case R_IA64_DTPMOD64LSB:
2238 1.1 christos if (bfd_link_pic (info) || maybe_dynamic)
2239 1.1 christos need_entry = NEED_DYNREL;
2240 1.1 christos break;
2241 1.1 christos
2242 1.1 christos case R_IA64_LTOFF_DTPMOD22:
2243 1.1 christos need_entry = NEED_DTPMOD;
2244 1.1 christos break;
2245 1.1 christos
2246 1.1 christos case R_IA64_LTOFF_FPTR22:
2247 1.1 christos case R_IA64_LTOFF_FPTR64I:
2248 1.1 christos case R_IA64_LTOFF_FPTR32MSB:
2249 1.1 christos case R_IA64_LTOFF_FPTR32LSB:
2250 1.1 christos case R_IA64_LTOFF_FPTR64MSB:
2251 1.1 christos case R_IA64_LTOFF_FPTR64LSB:
2252 1.1 christos need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2253 1.1 christos break;
2254 1.6 christos
2255 1.1 christos case R_IA64_FPTR64I:
2256 1.1 christos case R_IA64_FPTR32MSB:
2257 1.1 christos case R_IA64_FPTR32LSB:
2258 1.1 christos case R_IA64_FPTR64MSB:
2259 1.1 christos case R_IA64_FPTR64LSB:
2260 1.1 christos if (bfd_link_pic (info) || h)
2261 1.1 christos need_entry = NEED_FPTR | NEED_DYNREL;
2262 1.1 christos else
2263 1.1 christos need_entry = NEED_FPTR;
2264 1.1 christos break;
2265 1.1 christos
2266 1.1 christos case R_IA64_LTOFF22:
2267 1.1 christos case R_IA64_LTOFF64I:
2268 1.1 christos need_entry = NEED_GOT;
2269 1.1 christos break;
2270 1.1 christos
2271 1.1 christos case R_IA64_LTOFF22X:
2272 1.1 christos need_entry = NEED_GOTX;
2273 1.1 christos break;
2274 1.1 christos
2275 1.1 christos case R_IA64_PLTOFF22:
2276 1.1 christos case R_IA64_PLTOFF64I:
2277 1.1 christos case R_IA64_PLTOFF64MSB:
2278 1.1 christos case R_IA64_PLTOFF64LSB:
2279 1.1 christos need_entry = NEED_PLTOFF;
2280 1.1 christos if (h)
2281 1.1 christos {
2282 1.1 christos if (maybe_dynamic)
2283 1.1 christos need_entry |= NEED_MIN_PLT;
2284 1.1 christos }
2285 1.1 christos else
2286 1.1 christos {
2287 1.1 christos (*info->callbacks->warning)
2288 1.1 christos (info, _("@pltoff reloc against local symbol"), 0,
2289 1.1 christos abfd, 0, (bfd_vma) 0);
2290 1.1 christos }
2291 1.1 christos break;
2292 1.1 christos
2293 1.1 christos case R_IA64_PCREL21B:
2294 1.1 christos case R_IA64_PCREL60B:
2295 1.1 christos /* Depending on where this symbol is defined, we may or may not
2296 1.1 christos need a full plt entry. Only skip if we know we'll not need
2297 1.1 christos the entry -- static or symbolic, and the symbol definition
2298 1.1 christos has already been seen. */
2299 1.1 christos if (maybe_dynamic && rel->r_addend == 0)
2300 1.1 christos need_entry = NEED_FULL_PLT;
2301 1.1 christos break;
2302 1.1 christos
2303 1.1 christos case R_IA64_IMM14:
2304 1.1 christos case R_IA64_IMM22:
2305 1.6 christos case R_IA64_IMM64:
2306 1.1 christos case R_IA64_DIR32MSB:
2307 1.1 christos case R_IA64_DIR32LSB:
2308 1.1 christos case R_IA64_DIR64MSB:
2309 1.1 christos case R_IA64_DIR64LSB:
2310 1.1 christos /* Shared objects will always need at least a REL relocation. */
2311 1.1 christos if (bfd_link_pic (info) || maybe_dynamic)
2312 1.6 christos need_entry = NEED_DYNREL;
2313 1.1 christos break;
2314 1.1 christos
2315 1.1 christos case R_IA64_IPLTMSB:
2316 1.1 christos case R_IA64_IPLTLSB:
2317 1.1 christos /* Shared objects will always need at least a REL relocation. */
2318 1.1 christos if (bfd_link_pic (info) || maybe_dynamic)
2319 1.1 christos need_entry = NEED_DYNREL;
2320 1.1 christos break;
2321 1.1 christos
2322 1.1 christos case R_IA64_PCREL22:
2323 1.1 christos case R_IA64_PCREL64I:
2324 1.1 christos case R_IA64_PCREL32MSB:
2325 1.1 christos case R_IA64_PCREL32LSB:
2326 1.1 christos case R_IA64_PCREL64MSB:
2327 1.1 christos case R_IA64_PCREL64LSB:
2328 1.1 christos if (maybe_dynamic)
2329 1.1 christos need_entry = NEED_DYNREL;
2330 1.1 christos break;
2331 1.1 christos }
2332 1.1 christos
2333 1.1 christos if (!need_entry)
2334 1.1 christos continue;
2335 1.1 christos
2336 1.1 christos if ((need_entry & NEED_FPTR) != 0
2337 1.1 christos && rel->r_addend)
2338 1.1 christos {
2339 1.1 christos (*info->callbacks->warning)
2340 1.1 christos (info, _("non-zero addend in @fptr reloc"), 0,
2341 1.1 christos abfd, 0, (bfd_vma) 0);
2342 1.1 christos }
2343 1.1 christos
2344 1.1 christos if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL)
2345 1.1 christos return FALSE;
2346 1.1 christos }
2347 1.1 christos
2348 1.1 christos /* Now, we only do lookup without insertion, which is very fast
2349 1.1 christos with the modified get_dyn_sym_info. */
2350 1.1 christos for (rel = relocs; rel < relend; ++rel)
2351 1.1 christos {
2352 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
2353 1.1 christos int dynrel_type = R_IA64_NONE;
2354 1.1 christos
2355 1.1 christos r_symndx = ELFNN_R_SYM (rel->r_info);
2356 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
2357 1.1 christos {
2358 1.1 christos /* We're dealing with a global symbol -- find its hash entry
2359 1.1 christos and mark it as being referenced. */
2360 1.1 christos long indx = r_symndx - symtab_hdr->sh_info;
2361 1.1 christos h = elf_sym_hashes (abfd)[indx];
2362 1.1 christos while (h->root.type == bfd_link_hash_indirect
2363 1.1 christos || h->root.type == bfd_link_hash_warning)
2364 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2365 1.1 christos
2366 1.1 christos /* PR15323, ref flags aren't set for references in the same
2367 1.1 christos object. */
2368 1.1 christos h->root.non_ir_ref = 1;
2369 1.1 christos h->ref_regular = 1;
2370 1.1 christos }
2371 1.1 christos else
2372 1.6 christos h = NULL;
2373 1.1 christos
2374 1.1 christos /* We can only get preliminary data on whether a symbol is
2375 1.1 christos locally or externally defined, as not all of the input files
2376 1.1 christos have yet been processed. Do something with what we know, as
2377 1.1 christos this may help reduce memory usage and processing time later. */
2378 1.1 christos maybe_dynamic = (h && ((!bfd_link_executable (info)
2379 1.1 christos && (!SYMBOLIC_BIND (info, h)
2380 1.1 christos || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2381 1.1 christos || !h->def_regular
2382 1.1 christos || h->root.type == bfd_link_hash_defweak));
2383 1.6 christos
2384 1.1 christos need_entry = 0;
2385 1.1 christos switch (ELFNN_R_TYPE (rel->r_info))
2386 1.6 christos {
2387 1.1 christos case R_IA64_TPREL64MSB:
2388 1.1 christos case R_IA64_TPREL64LSB:
2389 1.1 christos if (bfd_link_pic (info) || maybe_dynamic)
2390 1.1 christos need_entry = NEED_DYNREL;
2391 1.1 christos dynrel_type = R_IA64_TPREL64LSB;
2392 1.6 christos if (bfd_link_pic (info))
2393 1.1 christos info->flags |= DF_STATIC_TLS;
2394 1.1 christos break;
2395 1.1 christos
2396 1.1 christos case R_IA64_LTOFF_TPREL22:
2397 1.1 christos need_entry = NEED_TPREL;
2398 1.1 christos if (bfd_link_pic (info))
2399 1.1 christos info->flags |= DF_STATIC_TLS;
2400 1.6 christos break;
2401 1.1 christos
2402 1.1 christos case R_IA64_DTPREL32MSB:
2403 1.1 christos case R_IA64_DTPREL32LSB:
2404 1.1 christos case R_IA64_DTPREL64MSB:
2405 1.1 christos case R_IA64_DTPREL64LSB:
2406 1.1 christos if (bfd_link_pic (info) || maybe_dynamic)
2407 1.1 christos need_entry = NEED_DYNREL;
2408 1.1 christos dynrel_type = R_IA64_DTPRELNNLSB;
2409 1.1 christos break;
2410 1.1 christos
2411 1.6 christos case R_IA64_LTOFF_DTPREL22:
2412 1.1 christos need_entry = NEED_DTPREL;
2413 1.1 christos break;
2414 1.1 christos
2415 1.1 christos case R_IA64_DTPMOD64MSB:
2416 1.1 christos case R_IA64_DTPMOD64LSB:
2417 1.1 christos if (bfd_link_pic (info) || maybe_dynamic)
2418 1.1 christos need_entry = NEED_DYNREL;
2419 1.1 christos dynrel_type = R_IA64_DTPMOD64LSB;
2420 1.1 christos break;
2421 1.1 christos
2422 1.1 christos case R_IA64_LTOFF_DTPMOD22:
2423 1.1 christos need_entry = NEED_DTPMOD;
2424 1.1 christos break;
2425 1.1 christos
2426 1.1 christos case R_IA64_LTOFF_FPTR22:
2427 1.1 christos case R_IA64_LTOFF_FPTR64I:
2428 1.1 christos case R_IA64_LTOFF_FPTR32MSB:
2429 1.1 christos case R_IA64_LTOFF_FPTR32LSB:
2430 1.1 christos case R_IA64_LTOFF_FPTR64MSB:
2431 1.1 christos case R_IA64_LTOFF_FPTR64LSB:
2432 1.1 christos need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2433 1.1 christos break;
2434 1.6 christos
2435 1.1 christos case R_IA64_FPTR64I:
2436 1.1 christos case R_IA64_FPTR32MSB:
2437 1.1 christos case R_IA64_FPTR32LSB:
2438 1.1 christos case R_IA64_FPTR64MSB:
2439 1.1 christos case R_IA64_FPTR64LSB:
2440 1.1 christos if (bfd_link_pic (info) || h)
2441 1.1 christos need_entry = NEED_FPTR | NEED_DYNREL;
2442 1.1 christos else
2443 1.1 christos need_entry = NEED_FPTR;
2444 1.1 christos dynrel_type = R_IA64_FPTRNNLSB;
2445 1.1 christos break;
2446 1.1 christos
2447 1.1 christos case R_IA64_LTOFF22:
2448 1.1 christos case R_IA64_LTOFF64I:
2449 1.1 christos need_entry = NEED_GOT;
2450 1.1 christos break;
2451 1.1 christos
2452 1.1 christos case R_IA64_LTOFF22X:
2453 1.1 christos need_entry = NEED_GOTX;
2454 1.1 christos break;
2455 1.1 christos
2456 1.1 christos case R_IA64_PLTOFF22:
2457 1.1 christos case R_IA64_PLTOFF64I:
2458 1.1 christos case R_IA64_PLTOFF64MSB:
2459 1.1 christos case R_IA64_PLTOFF64LSB:
2460 1.1 christos need_entry = NEED_PLTOFF;
2461 1.1 christos if (h)
2462 1.1 christos {
2463 1.1 christos if (maybe_dynamic)
2464 1.1 christos need_entry |= NEED_MIN_PLT;
2465 1.1 christos }
2466 1.1 christos break;
2467 1.1 christos
2468 1.1 christos case R_IA64_PCREL21B:
2469 1.1 christos case R_IA64_PCREL60B:
2470 1.1 christos /* Depending on where this symbol is defined, we may or may not
2471 1.1 christos need a full plt entry. Only skip if we know we'll not need
2472 1.1 christos the entry -- static or symbolic, and the symbol definition
2473 1.1 christos has already been seen. */
2474 1.1 christos if (maybe_dynamic && rel->r_addend == 0)
2475 1.1 christos need_entry = NEED_FULL_PLT;
2476 1.1 christos break;
2477 1.1 christos
2478 1.1 christos case R_IA64_IMM14:
2479 1.1 christos case R_IA64_IMM22:
2480 1.6 christos case R_IA64_IMM64:
2481 1.1 christos case R_IA64_DIR32MSB:
2482 1.1 christos case R_IA64_DIR32LSB:
2483 1.1 christos case R_IA64_DIR64MSB:
2484 1.1 christos case R_IA64_DIR64LSB:
2485 1.1 christos /* Shared objects will always need at least a REL relocation. */
2486 1.1 christos if (bfd_link_pic (info) || maybe_dynamic)
2487 1.1 christos need_entry = NEED_DYNREL;
2488 1.6 christos dynrel_type = R_IA64_DIRNNLSB;
2489 1.1 christos break;
2490 1.1 christos
2491 1.1 christos case R_IA64_IPLTMSB:
2492 1.1 christos case R_IA64_IPLTLSB:
2493 1.1 christos /* Shared objects will always need at least a REL relocation. */
2494 1.1 christos if (bfd_link_pic (info) || maybe_dynamic)
2495 1.1 christos need_entry = NEED_DYNREL;
2496 1.1 christos dynrel_type = R_IA64_IPLTLSB;
2497 1.1 christos break;
2498 1.1 christos
2499 1.1 christos case R_IA64_PCREL22:
2500 1.1 christos case R_IA64_PCREL64I:
2501 1.1 christos case R_IA64_PCREL32MSB:
2502 1.1 christos case R_IA64_PCREL32LSB:
2503 1.1 christos case R_IA64_PCREL64MSB:
2504 1.1 christos case R_IA64_PCREL64LSB:
2505 1.1 christos if (maybe_dynamic)
2506 1.1 christos need_entry = NEED_DYNREL;
2507 1.1 christos dynrel_type = R_IA64_PCRELNNLSB;
2508 1.1 christos break;
2509 1.1 christos }
2510 1.1 christos
2511 1.1 christos if (!need_entry)
2512 1.1 christos continue;
2513 1.1 christos
2514 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE);
2515 1.1 christos
2516 1.1 christos /* Record whether or not this is a local symbol. */
2517 1.1 christos dyn_i->h = h;
2518 1.1 christos
2519 1.1 christos /* Create what's needed. */
2520 1.1 christos if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2521 1.1 christos | NEED_DTPMOD | NEED_DTPREL))
2522 1.1 christos {
2523 1.1 christos if (!got)
2524 1.1 christos {
2525 1.1 christos got = get_got (abfd, info, ia64_info);
2526 1.1 christos if (!got)
2527 1.1 christos return FALSE;
2528 1.1 christos }
2529 1.1 christos if (need_entry & NEED_GOT)
2530 1.1 christos dyn_i->want_got = 1;
2531 1.1 christos if (need_entry & NEED_GOTX)
2532 1.1 christos dyn_i->want_gotx = 1;
2533 1.1 christos if (need_entry & NEED_TPREL)
2534 1.1 christos dyn_i->want_tprel = 1;
2535 1.1 christos if (need_entry & NEED_DTPMOD)
2536 1.1 christos dyn_i->want_dtpmod = 1;
2537 1.1 christos if (need_entry & NEED_DTPREL)
2538 1.1 christos dyn_i->want_dtprel = 1;
2539 1.1 christos }
2540 1.1 christos if (need_entry & NEED_FPTR)
2541 1.1 christos {
2542 1.1 christos if (!fptr)
2543 1.1 christos {
2544 1.1 christos fptr = get_fptr (abfd, info, ia64_info);
2545 1.1 christos if (!fptr)
2546 1.6 christos return FALSE;
2547 1.1 christos }
2548 1.1 christos
2549 1.1 christos /* FPTRs for shared libraries are allocated by the dynamic
2550 1.1 christos linker. Make sure this local symbol will appear in the
2551 1.1 christos dynamic symbol table. */
2552 1.1 christos if (!h && bfd_link_pic (info))
2553 1.1 christos {
2554 1.1 christos if (! (bfd_elf_link_record_local_dynamic_symbol
2555 1.1 christos (info, abfd, (long) r_symndx)))
2556 1.1 christos return FALSE;
2557 1.1 christos }
2558 1.1 christos
2559 1.1 christos dyn_i->want_fptr = 1;
2560 1.1 christos }
2561 1.1 christos if (need_entry & NEED_LTOFF_FPTR)
2562 1.1 christos dyn_i->want_ltoff_fptr = 1;
2563 1.1 christos if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2564 1.1 christos {
2565 1.1 christos if (!ia64_info->root.dynobj)
2566 1.1 christos ia64_info->root.dynobj = abfd;
2567 1.1 christos h->needs_plt = 1;
2568 1.1 christos dyn_i->want_plt = 1;
2569 1.1 christos }
2570 1.1 christos if (need_entry & NEED_FULL_PLT)
2571 1.1 christos dyn_i->want_plt2 = 1;
2572 1.1 christos if (need_entry & NEED_PLTOFF)
2573 1.1 christos {
2574 1.1 christos /* This is needed here, in case @pltoff is used in a non-shared
2575 1.1 christos link. */
2576 1.1 christos if (!pltoff)
2577 1.1 christos {
2578 1.1 christos pltoff = get_pltoff (abfd, info, ia64_info);
2579 1.1 christos if (!pltoff)
2580 1.1 christos return FALSE;
2581 1.1 christos }
2582 1.1 christos
2583 1.1 christos dyn_i->want_pltoff = 1;
2584 1.1 christos }
2585 1.1 christos if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2586 1.1 christos {
2587 1.1 christos if (!srel)
2588 1.1 christos {
2589 1.1 christos srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2590 1.1 christos if (!srel)
2591 1.1 christos return FALSE;
2592 1.1 christos }
2593 1.1 christos if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2594 1.1 christos (sec->flags & SEC_READONLY) != 0))
2595 1.1 christos return FALSE;
2596 1.1 christos }
2597 1.1 christos }
2598 1.1 christos
2599 1.1 christos return TRUE;
2600 1.1 christos }
2601 1.1 christos
2602 1.1 christos /* For cleanliness, and potentially faster dynamic loading, allocate
2603 1.1 christos external GOT entries first. */
2604 1.1 christos
2605 1.1 christos static bfd_boolean
2606 1.1 christos allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2607 1.1 christos void * data)
2608 1.1 christos {
2609 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2610 1.1 christos
2611 1.1 christos if ((dyn_i->want_got || dyn_i->want_gotx)
2612 1.1 christos && ! dyn_i->want_fptr
2613 1.1 christos && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2614 1.1 christos {
2615 1.1 christos dyn_i->got_offset = x->ofs;
2616 1.1 christos x->ofs += 8;
2617 1.1 christos }
2618 1.1 christos if (dyn_i->want_tprel)
2619 1.1 christos {
2620 1.1 christos dyn_i->tprel_offset = x->ofs;
2621 1.1 christos x->ofs += 8;
2622 1.1 christos }
2623 1.1 christos if (dyn_i->want_dtpmod)
2624 1.1 christos {
2625 1.1 christos if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2626 1.1 christos {
2627 1.1 christos dyn_i->dtpmod_offset = x->ofs;
2628 1.1 christos x->ofs += 8;
2629 1.1 christos }
2630 1.1 christos else
2631 1.1 christos {
2632 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2633 1.1 christos
2634 1.1 christos ia64_info = elfNN_ia64_hash_table (x->info);
2635 1.1 christos if (ia64_info == NULL)
2636 1.1 christos return FALSE;
2637 1.1 christos
2638 1.1 christos if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2639 1.1 christos {
2640 1.1 christos ia64_info->self_dtpmod_offset = x->ofs;
2641 1.1 christos x->ofs += 8;
2642 1.1 christos }
2643 1.1 christos dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2644 1.1 christos }
2645 1.1 christos }
2646 1.1 christos if (dyn_i->want_dtprel)
2647 1.1 christos {
2648 1.1 christos dyn_i->dtprel_offset = x->ofs;
2649 1.1 christos x->ofs += 8;
2650 1.1 christos }
2651 1.1 christos return TRUE;
2652 1.1 christos }
2653 1.1 christos
2654 1.1 christos /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2655 1.1 christos
2656 1.1 christos static bfd_boolean
2657 1.1 christos allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2658 1.1 christos void * data)
2659 1.1 christos {
2660 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2661 1.1 christos
2662 1.1 christos if (dyn_i->want_got
2663 1.1 christos && dyn_i->want_fptr
2664 1.1 christos && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
2665 1.1 christos {
2666 1.1 christos dyn_i->got_offset = x->ofs;
2667 1.1 christos x->ofs += 8;
2668 1.1 christos }
2669 1.1 christos return TRUE;
2670 1.1 christos }
2671 1.1 christos
2672 1.1 christos /* Lastly, allocate all the GOT entries for local data. */
2673 1.1 christos
2674 1.1 christos static bfd_boolean
2675 1.1 christos allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2676 1.1 christos void * data)
2677 1.1 christos {
2678 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2679 1.1 christos
2680 1.1 christos if ((dyn_i->want_got || dyn_i->want_gotx)
2681 1.1 christos && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2682 1.1 christos {
2683 1.1 christos dyn_i->got_offset = x->ofs;
2684 1.1 christos x->ofs += 8;
2685 1.1 christos }
2686 1.1 christos return TRUE;
2687 1.1 christos }
2688 1.1 christos
2689 1.1 christos /* Search for the index of a global symbol in it's defining object file. */
2690 1.1 christos
2691 1.1 christos static long
2692 1.1 christos global_sym_index (struct elf_link_hash_entry *h)
2693 1.1 christos {
2694 1.1 christos struct elf_link_hash_entry **p;
2695 1.1 christos bfd *obj;
2696 1.1 christos
2697 1.1 christos BFD_ASSERT (h->root.type == bfd_link_hash_defined
2698 1.1 christos || h->root.type == bfd_link_hash_defweak);
2699 1.1 christos
2700 1.1 christos obj = h->root.u.def.section->owner;
2701 1.1 christos for (p = elf_sym_hashes (obj); *p != h; ++p)
2702 1.1 christos continue;
2703 1.1 christos
2704 1.1 christos return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2705 1.1 christos }
2706 1.1 christos
2707 1.1 christos /* Allocate function descriptors. We can do these for every function
2708 1.1 christos in a main executable that is not exported. */
2709 1.1 christos
2710 1.1 christos static bfd_boolean
2711 1.1 christos allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data)
2712 1.1 christos {
2713 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2714 1.1 christos
2715 1.1 christos if (dyn_i->want_fptr)
2716 1.1 christos {
2717 1.1 christos struct elf_link_hash_entry *h = dyn_i->h;
2718 1.6 christos
2719 1.1 christos if (h)
2720 1.1 christos while (h->root.type == bfd_link_hash_indirect
2721 1.1 christos || h->root.type == bfd_link_hash_warning)
2722 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2723 1.1 christos
2724 1.1 christos if (!bfd_link_executable (x->info)
2725 1.1 christos && (!h
2726 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2727 1.1 christos || (h->root.type != bfd_link_hash_undefweak
2728 1.1 christos && h->root.type != bfd_link_hash_undefined)))
2729 1.1 christos {
2730 1.1 christos if (h && h->dynindx == -1)
2731 1.1 christos {
2732 1.1 christos BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2733 1.1 christos || (h->root.type == bfd_link_hash_defweak));
2734 1.1 christos
2735 1.1 christos if (!bfd_elf_link_record_local_dynamic_symbol
2736 1.1 christos (x->info, h->root.u.def.section->owner,
2737 1.1 christos global_sym_index (h)))
2738 1.1 christos return FALSE;
2739 1.1 christos }
2740 1.1 christos
2741 1.1 christos dyn_i->want_fptr = 0;
2742 1.1 christos }
2743 1.1 christos else if (h == NULL || h->dynindx == -1)
2744 1.1 christos {
2745 1.1 christos dyn_i->fptr_offset = x->ofs;
2746 1.1 christos x->ofs += 16;
2747 1.1 christos }
2748 1.1 christos else
2749 1.1 christos dyn_i->want_fptr = 0;
2750 1.1 christos }
2751 1.1 christos return TRUE;
2752 1.1 christos }
2753 1.1 christos
2754 1.1 christos /* Allocate all the minimal PLT entries. */
2755 1.1 christos
2756 1.1 christos static bfd_boolean
2757 1.1 christos allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2758 1.1 christos void * data)
2759 1.1 christos {
2760 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2761 1.1 christos
2762 1.1 christos if (dyn_i->want_plt)
2763 1.1 christos {
2764 1.1 christos struct elf_link_hash_entry *h = dyn_i->h;
2765 1.1 christos
2766 1.1 christos if (h)
2767 1.1 christos while (h->root.type == bfd_link_hash_indirect
2768 1.1 christos || h->root.type == bfd_link_hash_warning)
2769 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2770 1.1 christos
2771 1.1 christos /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2772 1.1 christos if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2773 1.1 christos {
2774 1.1 christos bfd_size_type offset = x->ofs;
2775 1.1 christos if (offset == 0)
2776 1.1 christos offset = PLT_HEADER_SIZE;
2777 1.1 christos dyn_i->plt_offset = offset;
2778 1.1 christos x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2779 1.1 christos
2780 1.1 christos dyn_i->want_pltoff = 1;
2781 1.1 christos }
2782 1.1 christos else
2783 1.1 christos {
2784 1.1 christos dyn_i->want_plt = 0;
2785 1.1 christos dyn_i->want_plt2 = 0;
2786 1.1 christos }
2787 1.1 christos }
2788 1.1 christos return TRUE;
2789 1.1 christos }
2790 1.1 christos
2791 1.1 christos /* Allocate all the full PLT entries. */
2792 1.1 christos
2793 1.1 christos static bfd_boolean
2794 1.1 christos allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2795 1.1 christos void * data)
2796 1.1 christos {
2797 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2798 1.1 christos
2799 1.1 christos if (dyn_i->want_plt2)
2800 1.1 christos {
2801 1.1 christos struct elf_link_hash_entry *h = dyn_i->h;
2802 1.1 christos bfd_size_type ofs = x->ofs;
2803 1.1 christos
2804 1.1 christos dyn_i->plt2_offset = ofs;
2805 1.1 christos x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2806 1.1 christos
2807 1.1 christos while (h->root.type == bfd_link_hash_indirect
2808 1.1 christos || h->root.type == bfd_link_hash_warning)
2809 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2810 1.1 christos dyn_i->h->plt.offset = ofs;
2811 1.1 christos }
2812 1.1 christos return TRUE;
2813 1.1 christos }
2814 1.1 christos
2815 1.1 christos /* Allocate all the PLTOFF entries requested by relocations and
2816 1.1 christos plt entries. We can't share space with allocated FPTR entries,
2817 1.1 christos because the latter are not necessarily addressable by the GP.
2818 1.1 christos ??? Relaxation might be able to determine that they are. */
2819 1.1 christos
2820 1.1 christos static bfd_boolean
2821 1.1 christos allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2822 1.1 christos void * data)
2823 1.1 christos {
2824 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2825 1.1 christos
2826 1.1 christos if (dyn_i->want_pltoff)
2827 1.1 christos {
2828 1.1 christos dyn_i->pltoff_offset = x->ofs;
2829 1.1 christos x->ofs += 16;
2830 1.1 christos }
2831 1.1 christos return TRUE;
2832 1.1 christos }
2833 1.1 christos
2834 1.1 christos /* Allocate dynamic relocations for those symbols that turned out
2835 1.1 christos to be dynamic. */
2836 1.1 christos
2837 1.1 christos static bfd_boolean
2838 1.1 christos allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2839 1.1 christos void * data)
2840 1.1 christos {
2841 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2842 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2843 1.1 christos struct elfNN_ia64_dyn_reloc_entry *rent;
2844 1.1 christos bfd_boolean dynamic_symbol, shared, resolved_zero;
2845 1.1 christos
2846 1.1 christos ia64_info = elfNN_ia64_hash_table (x->info);
2847 1.6 christos if (ia64_info == NULL)
2848 1.1 christos return FALSE;
2849 1.1 christos
2850 1.1 christos /* Note that this can't be used in relation to FPTR relocs below. */
2851 1.1 christos dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2852 1.1 christos
2853 1.1 christos shared = bfd_link_pic (x->info);
2854 1.1 christos resolved_zero = (dyn_i->h
2855 1.1 christos && ELF_ST_VISIBILITY (dyn_i->h->other)
2856 1.1 christos && dyn_i->h->root.type == bfd_link_hash_undefweak);
2857 1.1 christos
2858 1.1 christos /* Take care of the GOT and PLT relocations. */
2859 1.1 christos
2860 1.1 christos if ((!resolved_zero
2861 1.1 christos && (dynamic_symbol || shared)
2862 1.6 christos && (dyn_i->want_got || dyn_i->want_gotx))
2863 1.1 christos || (dyn_i->want_ltoff_fptr
2864 1.1 christos && dyn_i->h
2865 1.1 christos && dyn_i->h->dynindx != -1))
2866 1.1 christos {
2867 1.1 christos if (!dyn_i->want_ltoff_fptr
2868 1.1 christos || !bfd_link_pie (x->info)
2869 1.1 christos || dyn_i->h == NULL
2870 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak)
2871 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2872 1.1 christos }
2873 1.1 christos if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2874 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2875 1.1 christos if (dynamic_symbol && dyn_i->want_dtpmod)
2876 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2877 1.1 christos if (dynamic_symbol && dyn_i->want_dtprel)
2878 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2879 1.1 christos
2880 1.1 christos if (x->only_got)
2881 1.1 christos return TRUE;
2882 1.1 christos
2883 1.1 christos if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2884 1.1 christos {
2885 1.1 christos if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2886 1.1 christos ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2887 1.1 christos }
2888 1.1 christos
2889 1.1 christos if (!resolved_zero && dyn_i->want_pltoff)
2890 1.1 christos {
2891 1.1 christos bfd_size_type t = 0;
2892 1.1 christos
2893 1.1 christos /* Dynamic symbols get one IPLT relocation. Local symbols in
2894 1.1 christos shared libraries get two REL relocations. Local symbols in
2895 1.1 christos main applications get nothing. */
2896 1.1 christos if (dynamic_symbol)
2897 1.1 christos t = sizeof (ElfNN_External_Rela);
2898 1.1 christos else if (shared)
2899 1.1 christos t = 2 * sizeof (ElfNN_External_Rela);
2900 1.1 christos
2901 1.1 christos ia64_info->rel_pltoff_sec->size += t;
2902 1.1 christos }
2903 1.1 christos
2904 1.1 christos /* Take care of the normal data relocations. */
2905 1.1 christos
2906 1.1 christos for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2907 1.1 christos {
2908 1.1 christos int count = rent->count;
2909 1.1 christos
2910 1.1 christos switch (rent->type)
2911 1.1 christos {
2912 1.6 christos case R_IA64_FPTR32LSB:
2913 1.1 christos case R_IA64_FPTR64LSB:
2914 1.1 christos /* Allocate one iff !want_fptr and not PIE, which by this point
2915 1.1 christos will be true only if we're actually allocating one statically
2916 1.1 christos in the main executable. Position independent executables
2917 1.1 christos need a relative reloc. */
2918 1.1 christos if (dyn_i->want_fptr && !bfd_link_pie (x->info))
2919 1.1 christos continue;
2920 1.1 christos break;
2921 1.1 christos case R_IA64_PCREL32LSB:
2922 1.1 christos case R_IA64_PCREL64LSB:
2923 1.1 christos if (!dynamic_symbol)
2924 1.1 christos continue;
2925 1.1 christos break;
2926 1.1 christos case R_IA64_DIR32LSB:
2927 1.1 christos case R_IA64_DIR64LSB:
2928 1.1 christos if (!dynamic_symbol && !shared)
2929 1.1 christos continue;
2930 1.1 christos break;
2931 1.1 christos case R_IA64_IPLTLSB:
2932 1.1 christos if (!dynamic_symbol && !shared)
2933 1.1 christos continue;
2934 1.1 christos /* Use two REL relocations for IPLT relocations
2935 1.1 christos against local symbols. */
2936 1.1 christos if (!dynamic_symbol)
2937 1.1 christos count *= 2;
2938 1.1 christos break;
2939 1.1 christos case R_IA64_DTPREL32LSB:
2940 1.1 christos case R_IA64_TPREL64LSB:
2941 1.1 christos case R_IA64_DTPREL64LSB:
2942 1.1 christos case R_IA64_DTPMOD64LSB:
2943 1.1 christos break;
2944 1.1 christos default:
2945 1.1 christos abort ();
2946 1.1 christos }
2947 1.1 christos if (rent->reltext)
2948 1.1 christos ia64_info->reltext = 1;
2949 1.1 christos rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2950 1.1 christos }
2951 1.1 christos
2952 1.1 christos return TRUE;
2953 1.1 christos }
2954 1.1 christos
2955 1.1 christos static bfd_boolean
2956 1.1 christos elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2957 1.1 christos struct elf_link_hash_entry *h)
2958 1.1 christos {
2959 1.1 christos /* ??? Undefined symbols with PLT entries should be re-defined
2960 1.1 christos to be the PLT entry. */
2961 1.1 christos
2962 1.1 christos /* If this is a weak symbol, and there is a real definition, the
2963 1.1 christos processor independent code will have arranged for us to see the
2964 1.1 christos real definition first, and we can just use the same value. */
2965 1.1 christos if (h->u.weakdef != NULL)
2966 1.1 christos {
2967 1.1 christos BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2968 1.1 christos || h->u.weakdef->root.type == bfd_link_hash_defweak);
2969 1.1 christos h->root.u.def.section = h->u.weakdef->root.u.def.section;
2970 1.1 christos h->root.u.def.value = h->u.weakdef->root.u.def.value;
2971 1.1 christos return TRUE;
2972 1.1 christos }
2973 1.1 christos
2974 1.1 christos /* If this is a reference to a symbol defined by a dynamic object which
2975 1.1 christos is not a function, we might allocate the symbol in our .dynbss section
2976 1.1 christos and allocate a COPY dynamic relocation.
2977 1.1 christos
2978 1.1 christos But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2979 1.1 christos of hackery. */
2980 1.1 christos
2981 1.1 christos return TRUE;
2982 1.1 christos }
2983 1.1 christos
2984 1.1 christos static bfd_boolean
2985 1.1 christos elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2986 1.1 christos struct bfd_link_info *info)
2987 1.1 christos {
2988 1.1 christos struct elfNN_ia64_allocate_data data;
2989 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2990 1.1 christos asection *sec;
2991 1.7 christos bfd *dynobj;
2992 1.1 christos bfd_boolean relplt = FALSE;
2993 1.1 christos
2994 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
2995 1.1 christos if (ia64_info == NULL)
2996 1.1 christos return FALSE;
2997 1.1 christos dynobj = ia64_info->root.dynobj;
2998 1.6 christos ia64_info->self_dtpmod_offset = (bfd_vma) -1;
2999 1.1 christos BFD_ASSERT(dynobj != NULL);
3000 1.1 christos data.info = info;
3001 1.1 christos
3002 1.1 christos /* Set the contents of the .interp section to the interpreter. */
3003 1.1 christos if (ia64_info->root.dynamic_sections_created
3004 1.1 christos && bfd_link_executable (info) && !info->nointerp)
3005 1.1 christos {
3006 1.1 christos sec = bfd_get_linker_section (dynobj, ".interp");
3007 1.1 christos BFD_ASSERT (sec != NULL);
3008 1.1 christos sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3009 1.1 christos sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
3010 1.1 christos }
3011 1.1 christos
3012 1.1 christos /* Allocate the GOT entries. */
3013 1.1 christos
3014 1.1 christos if (ia64_info->root.sgot)
3015 1.1 christos {
3016 1.1 christos data.ofs = 0;
3017 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
3018 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
3019 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
3020 1.1 christos ia64_info->root.sgot->size = data.ofs;
3021 1.1 christos }
3022 1.1 christos
3023 1.1 christos /* Allocate the FPTR entries. */
3024 1.1 christos
3025 1.1 christos if (ia64_info->fptr_sec)
3026 1.1 christos {
3027 1.1 christos data.ofs = 0;
3028 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
3029 1.1 christos ia64_info->fptr_sec->size = data.ofs;
3030 1.1 christos }
3031 1.1 christos
3032 1.1 christos /* Now that we've seen all of the input files, we can decide which
3033 1.1 christos symbols need plt entries. Allocate the minimal PLT entries first.
3034 1.1 christos We do this even though dynamic_sections_created may be FALSE, because
3035 1.1 christos this has the side-effect of clearing want_plt and want_plt2. */
3036 1.1 christos
3037 1.1 christos data.ofs = 0;
3038 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
3039 1.1 christos
3040 1.1 christos ia64_info->minplt_entries = 0;
3041 1.1 christos if (data.ofs)
3042 1.1 christos {
3043 1.1 christos ia64_info->minplt_entries
3044 1.1 christos = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
3045 1.1 christos }
3046 1.1 christos
3047 1.1 christos /* Align the pointer for the plt2 entries. */
3048 1.1 christos data.ofs = (data.ofs + 31) & (bfd_vma) -32;
3049 1.1 christos
3050 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
3051 1.1 christos if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
3052 1.1 christos {
3053 1.1 christos /* FIXME: we always reserve the memory for dynamic linker even if
3054 1.1 christos there are no PLT entries since dynamic linker may assume the
3055 1.1 christos reserved memory always exists. */
3056 1.1 christos
3057 1.7 christos BFD_ASSERT (ia64_info->root.dynamic_sections_created);
3058 1.1 christos
3059 1.1 christos ia64_info->root.splt->size = data.ofs;
3060 1.1 christos
3061 1.1 christos /* If we've got a .plt, we need some extra memory for the dynamic
3062 1.1 christos linker. We stuff these in .got.plt. */
3063 1.1 christos ia64_info->root.sgotplt->size = 8 * PLT_RESERVED_WORDS;
3064 1.1 christos }
3065 1.1 christos
3066 1.1 christos /* Allocate the PLTOFF entries. */
3067 1.1 christos
3068 1.1 christos if (ia64_info->pltoff_sec)
3069 1.1 christos {
3070 1.1 christos data.ofs = 0;
3071 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
3072 1.1 christos ia64_info->pltoff_sec->size = data.ofs;
3073 1.1 christos }
3074 1.6 christos
3075 1.1 christos if (ia64_info->root.dynamic_sections_created)
3076 1.1 christos {
3077 1.1 christos /* Allocate space for the dynamic relocations that turned out to be
3078 1.1 christos required. */
3079 1.1 christos
3080 1.1 christos if (bfd_link_pic (info) && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
3081 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
3082 1.1 christos data.only_got = FALSE;
3083 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
3084 1.1 christos }
3085 1.1 christos
3086 1.1 christos /* We have now determined the sizes of the various dynamic sections.
3087 1.1 christos Allocate memory for them. */
3088 1.1 christos for (sec = dynobj->sections; sec != NULL; sec = sec->next)
3089 1.1 christos {
3090 1.1 christos bfd_boolean strip;
3091 1.1 christos
3092 1.1 christos if (!(sec->flags & SEC_LINKER_CREATED))
3093 1.1 christos continue;
3094 1.1 christos
3095 1.1 christos /* If we don't need this section, strip it from the output file.
3096 1.1 christos There were several sections primarily related to dynamic
3097 1.1 christos linking that must be create before the linker maps input
3098 1.1 christos sections to output sections. The linker does that before
3099 1.1 christos bfd_elf_size_dynamic_sections is called, and it is that
3100 1.1 christos function which decides whether anything needs to go into
3101 1.1 christos these sections. */
3102 1.1 christos
3103 1.1 christos strip = (sec->size == 0);
3104 1.1 christos
3105 1.1 christos if (sec == ia64_info->root.sgot)
3106 1.1 christos strip = FALSE;
3107 1.1 christos else if (sec == ia64_info->root.srelgot)
3108 1.1 christos {
3109 1.1 christos if (strip)
3110 1.1 christos ia64_info->root.srelgot = NULL;
3111 1.1 christos else
3112 1.1 christos /* We use the reloc_count field as a counter if we need to
3113 1.1 christos copy relocs into the output file. */
3114 1.1 christos sec->reloc_count = 0;
3115 1.1 christos }
3116 1.1 christos else if (sec == ia64_info->fptr_sec)
3117 1.1 christos {
3118 1.1 christos if (strip)
3119 1.1 christos ia64_info->fptr_sec = NULL;
3120 1.1 christos }
3121 1.1 christos else if (sec == ia64_info->rel_fptr_sec)
3122 1.1 christos {
3123 1.1 christos if (strip)
3124 1.1 christos ia64_info->rel_fptr_sec = NULL;
3125 1.1 christos else
3126 1.1 christos /* We use the reloc_count field as a counter if we need to
3127 1.1 christos copy relocs into the output file. */
3128 1.1 christos sec->reloc_count = 0;
3129 1.1 christos }
3130 1.1 christos else if (sec == ia64_info->root.splt)
3131 1.1 christos {
3132 1.1 christos if (strip)
3133 1.1 christos ia64_info->root.splt = NULL;
3134 1.1 christos }
3135 1.1 christos else if (sec == ia64_info->pltoff_sec)
3136 1.1 christos {
3137 1.1 christos if (strip)
3138 1.1 christos ia64_info->pltoff_sec = NULL;
3139 1.1 christos }
3140 1.1 christos else if (sec == ia64_info->rel_pltoff_sec)
3141 1.1 christos {
3142 1.1 christos if (strip)
3143 1.1 christos ia64_info->rel_pltoff_sec = NULL;
3144 1.1 christos else
3145 1.1 christos {
3146 1.1 christos relplt = TRUE;
3147 1.1 christos /* We use the reloc_count field as a counter if we need to
3148 1.1 christos copy relocs into the output file. */
3149 1.1 christos sec->reloc_count = 0;
3150 1.1 christos }
3151 1.1 christos }
3152 1.1 christos else
3153 1.1 christos {
3154 1.1 christos const char *name;
3155 1.1 christos
3156 1.1 christos /* It's OK to base decisions on the section name, because none
3157 1.1 christos of the dynobj section names depend upon the input files. */
3158 1.1 christos name = bfd_get_section_name (dynobj, sec);
3159 1.1 christos
3160 1.1 christos if (strcmp (name, ".got.plt") == 0)
3161 1.1 christos strip = FALSE;
3162 1.1 christos else if (CONST_STRNEQ (name, ".rel"))
3163 1.1 christos {
3164 1.1 christos if (!strip)
3165 1.1 christos {
3166 1.1 christos /* We use the reloc_count field as a counter if we need to
3167 1.1 christos copy relocs into the output file. */
3168 1.1 christos sec->reloc_count = 0;
3169 1.1 christos }
3170 1.1 christos }
3171 1.1 christos else
3172 1.1 christos continue;
3173 1.1 christos }
3174 1.1 christos
3175 1.1 christos if (strip)
3176 1.1 christos sec->flags |= SEC_EXCLUDE;
3177 1.1 christos else
3178 1.1 christos {
3179 1.1 christos /* Allocate memory for the section contents. */
3180 1.7 christos sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3181 1.1 christos if (sec->contents == NULL && sec->size != 0)
3182 1.1 christos return FALSE;
3183 1.1 christos }
3184 1.1 christos }
3185 1.1 christos
3186 1.6 christos if (ia64_info->root.dynamic_sections_created)
3187 1.1 christos {
3188 1.1 christos /* Add some entries to the .dynamic section. We fill in the values
3189 1.1 christos later (in finish_dynamic_sections) but we must add the entries now
3190 1.1 christos so that we get the correct size for the .dynamic section. */
3191 1.1 christos
3192 1.1 christos if (bfd_link_executable (info))
3193 1.1 christos {
3194 1.1 christos /* The DT_DEBUG entry is filled in by the dynamic linker and used
3195 1.1 christos by the debugger. */
3196 1.1 christos #define add_dynamic_entry(TAG, VAL) \
3197 1.1 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3198 1.1 christos
3199 1.1 christos if (!add_dynamic_entry (DT_DEBUG, 0))
3200 1.1 christos return FALSE;
3201 1.1 christos }
3202 1.1 christos
3203 1.1 christos if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3204 1.1 christos return FALSE;
3205 1.1 christos if (!add_dynamic_entry (DT_PLTGOT, 0))
3206 1.1 christos return FALSE;
3207 1.1 christos
3208 1.1 christos if (relplt)
3209 1.1 christos {
3210 1.1 christos if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3211 1.1 christos || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3212 1.1 christos || !add_dynamic_entry (DT_JMPREL, 0))
3213 1.1 christos return FALSE;
3214 1.1 christos }
3215 1.1 christos
3216 1.1 christos if (!add_dynamic_entry (DT_RELA, 0)
3217 1.1 christos || !add_dynamic_entry (DT_RELASZ, 0)
3218 1.1 christos || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3219 1.1 christos return FALSE;
3220 1.1 christos
3221 1.1 christos if (ia64_info->reltext)
3222 1.1 christos {
3223 1.1 christos if (!add_dynamic_entry (DT_TEXTREL, 0))
3224 1.1 christos return FALSE;
3225 1.1 christos info->flags |= DF_TEXTREL;
3226 1.1 christos }
3227 1.1 christos }
3228 1.1 christos
3229 1.1 christos /* ??? Perhaps force __gp local. */
3230 1.1 christos
3231 1.1 christos return TRUE;
3232 1.1 christos }
3233 1.1 christos
3234 1.1 christos static void
3235 1.1 christos elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info,
3236 1.1 christos asection *sec, asection *srel,
3237 1.1 christos bfd_vma offset, unsigned int type,
3238 1.1 christos long dynindx, bfd_vma addend)
3239 1.1 christos {
3240 1.1 christos Elf_Internal_Rela outrel;
3241 1.1 christos bfd_byte *loc;
3242 1.1 christos
3243 1.1 christos BFD_ASSERT (dynindx != -1);
3244 1.1 christos outrel.r_info = ELFNN_R_INFO (dynindx, type);
3245 1.1 christos outrel.r_addend = addend;
3246 1.1 christos outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3247 1.1 christos if (outrel.r_offset >= (bfd_vma) -2)
3248 1.1 christos {
3249 1.1 christos /* Run for the hills. We shouldn't be outputting a relocation
3250 1.1 christos for this. So do what everyone else does and output a no-op. */
3251 1.1 christos outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3252 1.1 christos outrel.r_addend = 0;
3253 1.1 christos outrel.r_offset = 0;
3254 1.1 christos }
3255 1.1 christos else
3256 1.1 christos outrel.r_offset += sec->output_section->vma + sec->output_offset;
3257 1.1 christos
3258 1.1 christos loc = srel->contents;
3259 1.1 christos loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3260 1.1 christos bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3261 1.1 christos BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3262 1.1 christos }
3263 1.1 christos
3264 1.1 christos /* Store an entry for target address TARGET_ADDR in the linkage table
3265 1.1 christos and return the gp-relative address of the linkage table entry. */
3266 1.1 christos
3267 1.1 christos static bfd_vma
3268 1.1 christos set_got_entry (bfd *abfd, struct bfd_link_info *info,
3269 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i,
3270 1.1 christos long dynindx, bfd_vma addend, bfd_vma value,
3271 1.1 christos unsigned int dyn_r_type)
3272 1.1 christos {
3273 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3274 1.1 christos asection *got_sec;
3275 1.1 christos bfd_boolean done;
3276 1.1 christos bfd_vma got_offset;
3277 1.1 christos
3278 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3279 1.1 christos if (ia64_info == NULL)
3280 1.1 christos return 0;
3281 1.1 christos
3282 1.1 christos got_sec = ia64_info->root.sgot;
3283 1.1 christos
3284 1.1 christos switch (dyn_r_type)
3285 1.1 christos {
3286 1.1 christos case R_IA64_TPREL64LSB:
3287 1.1 christos done = dyn_i->tprel_done;
3288 1.1 christos dyn_i->tprel_done = TRUE;
3289 1.1 christos got_offset = dyn_i->tprel_offset;
3290 1.1 christos break;
3291 1.1 christos case R_IA64_DTPMOD64LSB:
3292 1.1 christos if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3293 1.1 christos {
3294 1.1 christos done = dyn_i->dtpmod_done;
3295 1.1 christos dyn_i->dtpmod_done = TRUE;
3296 1.1 christos }
3297 1.1 christos else
3298 1.1 christos {
3299 1.1 christos done = ia64_info->self_dtpmod_done;
3300 1.1 christos ia64_info->self_dtpmod_done = TRUE;
3301 1.1 christos dynindx = 0;
3302 1.1 christos }
3303 1.1 christos got_offset = dyn_i->dtpmod_offset;
3304 1.1 christos break;
3305 1.1 christos case R_IA64_DTPREL32LSB:
3306 1.1 christos case R_IA64_DTPREL64LSB:
3307 1.1 christos done = dyn_i->dtprel_done;
3308 1.1 christos dyn_i->dtprel_done = TRUE;
3309 1.1 christos got_offset = dyn_i->dtprel_offset;
3310 1.1 christos break;
3311 1.1 christos default:
3312 1.1 christos done = dyn_i->got_done;
3313 1.1 christos dyn_i->got_done = TRUE;
3314 1.1 christos got_offset = dyn_i->got_offset;
3315 1.1 christos break;
3316 1.1 christos }
3317 1.1 christos
3318 1.1 christos BFD_ASSERT ((got_offset & 7) == 0);
3319 1.1 christos
3320 1.6 christos if (! done)
3321 1.1 christos {
3322 1.1 christos /* Store the target address in the linkage table entry. */
3323 1.1 christos bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3324 1.1 christos
3325 1.1 christos /* Install a dynamic relocation if needed. */
3326 1.1 christos if (((bfd_link_pic (info)
3327 1.1 christos && (!dyn_i->h
3328 1.1 christos || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3329 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak)
3330 1.1 christos && dyn_r_type != R_IA64_DTPREL32LSB
3331 1.6 christos && dyn_r_type != R_IA64_DTPREL64LSB)
3332 1.1 christos || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3333 1.1 christos || (dynindx != -1
3334 1.1 christos && (dyn_r_type == R_IA64_FPTR32LSB
3335 1.1 christos || dyn_r_type == R_IA64_FPTR64LSB)))
3336 1.1 christos && (!dyn_i->want_ltoff_fptr
3337 1.1 christos || !bfd_link_pie (info)
3338 1.1 christos || !dyn_i->h
3339 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak))
3340 1.1 christos {
3341 1.1 christos if (dynindx == -1
3342 1.1 christos && dyn_r_type != R_IA64_TPREL64LSB
3343 1.1 christos && dyn_r_type != R_IA64_DTPMOD64LSB
3344 1.1 christos && dyn_r_type != R_IA64_DTPREL32LSB
3345 1.1 christos && dyn_r_type != R_IA64_DTPREL64LSB)
3346 1.1 christos {
3347 1.1 christos dyn_r_type = R_IA64_RELNNLSB;
3348 1.1 christos dynindx = 0;
3349 1.1 christos addend = value;
3350 1.1 christos }
3351 1.1 christos
3352 1.1 christos if (bfd_big_endian (abfd))
3353 1.1 christos {
3354 1.1 christos switch (dyn_r_type)
3355 1.1 christos {
3356 1.1 christos case R_IA64_REL32LSB:
3357 1.1 christos dyn_r_type = R_IA64_REL32MSB;
3358 1.1 christos break;
3359 1.1 christos case R_IA64_DIR32LSB:
3360 1.1 christos dyn_r_type = R_IA64_DIR32MSB;
3361 1.1 christos break;
3362 1.1 christos case R_IA64_FPTR32LSB:
3363 1.1 christos dyn_r_type = R_IA64_FPTR32MSB;
3364 1.1 christos break;
3365 1.1 christos case R_IA64_DTPREL32LSB:
3366 1.1 christos dyn_r_type = R_IA64_DTPREL32MSB;
3367 1.1 christos break;
3368 1.1 christos case R_IA64_REL64LSB:
3369 1.1 christos dyn_r_type = R_IA64_REL64MSB;
3370 1.1 christos break;
3371 1.1 christos case R_IA64_DIR64LSB:
3372 1.1 christos dyn_r_type = R_IA64_DIR64MSB;
3373 1.1 christos break;
3374 1.1 christos case R_IA64_FPTR64LSB:
3375 1.1 christos dyn_r_type = R_IA64_FPTR64MSB;
3376 1.1 christos break;
3377 1.1 christos case R_IA64_TPREL64LSB:
3378 1.1 christos dyn_r_type = R_IA64_TPREL64MSB;
3379 1.1 christos break;
3380 1.1 christos case R_IA64_DTPMOD64LSB:
3381 1.1 christos dyn_r_type = R_IA64_DTPMOD64MSB;
3382 1.1 christos break;
3383 1.1 christos case R_IA64_DTPREL64LSB:
3384 1.1 christos dyn_r_type = R_IA64_DTPREL64MSB;
3385 1.1 christos break;
3386 1.1 christos default:
3387 1.1 christos BFD_ASSERT (FALSE);
3388 1.1 christos break;
3389 1.1 christos }
3390 1.1 christos }
3391 1.1 christos
3392 1.1 christos elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3393 1.1 christos ia64_info->root.srelgot,
3394 1.1 christos got_offset, dyn_r_type,
3395 1.1 christos dynindx, addend);
3396 1.1 christos }
3397 1.1 christos }
3398 1.1 christos
3399 1.1 christos /* Return the address of the linkage table entry. */
3400 1.1 christos value = (got_sec->output_section->vma
3401 1.1 christos + got_sec->output_offset
3402 1.1 christos + got_offset);
3403 1.1 christos
3404 1.1 christos return value;
3405 1.1 christos }
3406 1.1 christos
3407 1.1 christos /* Fill in a function descriptor consisting of the function's code
3408 1.1 christos address and its global pointer. Return the descriptor's address. */
3409 1.1 christos
3410 1.1 christos static bfd_vma
3411 1.1 christos set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
3412 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i,
3413 1.1 christos bfd_vma value)
3414 1.1 christos {
3415 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3416 1.1 christos asection *fptr_sec;
3417 1.1 christos
3418 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3419 1.1 christos if (ia64_info == NULL)
3420 1.1 christos return 0;
3421 1.1 christos
3422 1.1 christos fptr_sec = ia64_info->fptr_sec;
3423 1.1 christos
3424 1.1 christos if (!dyn_i->fptr_done)
3425 1.1 christos {
3426 1.1 christos dyn_i->fptr_done = 1;
3427 1.1 christos
3428 1.1 christos /* Fill in the function descriptor. */
3429 1.1 christos bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3430 1.1 christos bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3431 1.1 christos fptr_sec->contents + dyn_i->fptr_offset + 8);
3432 1.1 christos if (ia64_info->rel_fptr_sec)
3433 1.1 christos {
3434 1.1 christos Elf_Internal_Rela outrel;
3435 1.1 christos bfd_byte *loc;
3436 1.1 christos
3437 1.1 christos if (bfd_little_endian (abfd))
3438 1.1 christos outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3439 1.1 christos else
3440 1.1 christos outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3441 1.1 christos outrel.r_addend = value;
3442 1.1 christos outrel.r_offset = (fptr_sec->output_section->vma
3443 1.1 christos + fptr_sec->output_offset
3444 1.1 christos + dyn_i->fptr_offset);
3445 1.1 christos loc = ia64_info->rel_fptr_sec->contents;
3446 1.1 christos loc += ia64_info->rel_fptr_sec->reloc_count++
3447 1.1 christos * sizeof (ElfNN_External_Rela);
3448 1.1 christos bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3449 1.1 christos }
3450 1.1 christos }
3451 1.1 christos
3452 1.1 christos /* Return the descriptor's address. */
3453 1.1 christos value = (fptr_sec->output_section->vma
3454 1.1 christos + fptr_sec->output_offset
3455 1.1 christos + dyn_i->fptr_offset);
3456 1.1 christos
3457 1.1 christos return value;
3458 1.1 christos }
3459 1.1 christos
3460 1.1 christos /* Fill in a PLTOFF entry consisting of the function's code address
3461 1.1 christos and its global pointer. Return the descriptor's address. */
3462 1.1 christos
3463 1.1 christos static bfd_vma
3464 1.1 christos set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
3465 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i,
3466 1.1 christos bfd_vma value, bfd_boolean is_plt)
3467 1.1 christos {
3468 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3469 1.1 christos asection *pltoff_sec;
3470 1.1 christos
3471 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3472 1.1 christos if (ia64_info == NULL)
3473 1.1 christos return 0;
3474 1.1 christos
3475 1.1 christos pltoff_sec = ia64_info->pltoff_sec;
3476 1.1 christos
3477 1.1 christos /* Don't do anything if this symbol uses a real PLT entry. In
3478 1.1 christos that case, we'll fill this in during finish_dynamic_symbol. */
3479 1.1 christos if ((! dyn_i->want_plt || is_plt)
3480 1.1 christos && !dyn_i->pltoff_done)
3481 1.1 christos {
3482 1.1 christos bfd_vma gp = _bfd_get_gp_value (abfd);
3483 1.1 christos
3484 1.6 christos /* Fill in the function descriptor. */
3485 1.1 christos bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3486 1.1 christos bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3487 1.1 christos
3488 1.1 christos /* Install dynamic relocations if needed. */
3489 1.1 christos if (!is_plt
3490 1.1 christos && bfd_link_pic (info)
3491 1.1 christos && (!dyn_i->h
3492 1.1 christos || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3493 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak))
3494 1.1 christos {
3495 1.1 christos unsigned int dyn_r_type;
3496 1.1 christos
3497 1.1 christos if (bfd_big_endian (abfd))
3498 1.1 christos dyn_r_type = R_IA64_RELNNMSB;
3499 1.1 christos else
3500 1.1 christos dyn_r_type = R_IA64_RELNNLSB;
3501 1.1 christos
3502 1.1 christos elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3503 1.1 christos ia64_info->rel_pltoff_sec,
3504 1.1 christos dyn_i->pltoff_offset,
3505 1.1 christos dyn_r_type, 0, value);
3506 1.1 christos elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3507 1.1 christos ia64_info->rel_pltoff_sec,
3508 1.1 christos dyn_i->pltoff_offset + ARCH_SIZE / 8,
3509 1.1 christos dyn_r_type, 0, gp);
3510 1.1 christos }
3511 1.1 christos
3512 1.1 christos dyn_i->pltoff_done = 1;
3513 1.1 christos }
3514 1.1 christos
3515 1.1 christos /* Return the descriptor's address. */
3516 1.1 christos value = (pltoff_sec->output_section->vma
3517 1.1 christos + pltoff_sec->output_offset
3518 1.1 christos + dyn_i->pltoff_offset);
3519 1.1 christos
3520 1.1 christos return value;
3521 1.1 christos }
3522 1.1 christos
3523 1.1 christos /* Return the base VMA address which should be subtracted from real addresses
3524 1.1 christos when resolving @tprel() relocation.
3525 1.1 christos Main program TLS (whose template starts at PT_TLS p_vaddr)
3526 1.1 christos is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3527 1.1 christos
3528 1.1 christos static bfd_vma
3529 1.1 christos elfNN_ia64_tprel_base (struct bfd_link_info *info)
3530 1.1 christos {
3531 1.1 christos asection *tls_sec = elf_hash_table (info)->tls_sec;
3532 1.1 christos return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
3533 1.1 christos tls_sec->alignment_power);
3534 1.1 christos }
3535 1.1 christos
3536 1.1 christos /* Return the base VMA address which should be subtracted from real addresses
3537 1.1 christos when resolving @dtprel() relocation.
3538 1.1 christos This is PT_TLS segment p_vaddr. */
3539 1.1 christos
3540 1.1 christos static bfd_vma
3541 1.1 christos elfNN_ia64_dtprel_base (struct bfd_link_info *info)
3542 1.1 christos {
3543 1.1 christos return elf_hash_table (info)->tls_sec->vma;
3544 1.1 christos }
3545 1.1 christos
3546 1.1 christos /* Called through qsort to sort the .IA_64.unwind section during a
3547 1.1 christos non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3548 1.1 christos to the output bfd so we can do proper endianness frobbing. */
3549 1.1 christos
3550 1.1 christos static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3551 1.1 christos
3552 1.1 christos static int
3553 1.1 christos elfNN_ia64_unwind_entry_compare (const void * a, const void * b)
3554 1.1 christos {
3555 1.1 christos bfd_vma av, bv;
3556 1.1 christos
3557 1.1 christos av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3558 1.1 christos bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3559 1.1 christos
3560 1.1 christos return (av < bv ? -1 : av > bv ? 1 : 0);
3561 1.1 christos }
3562 1.1 christos
3563 1.1 christos /* Make sure we've got ourselves a nice fat __gp value. */
3564 1.1 christos static bfd_boolean
3565 1.1 christos elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final)
3566 1.1 christos {
3567 1.1 christos bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3568 1.1 christos bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3569 1.1 christos struct elf_link_hash_entry *gp;
3570 1.1 christos bfd_vma gp_val;
3571 1.1 christos asection *os;
3572 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3573 1.1 christos
3574 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3575 1.1 christos if (ia64_info == NULL)
3576 1.1 christos return FALSE;
3577 1.1 christos
3578 1.1 christos /* Find the min and max vma of all sections marked short. Also collect
3579 1.1 christos min and max vma of any type, for use in selecting a nice gp. */
3580 1.1 christos for (os = abfd->sections; os ; os = os->next)
3581 1.1 christos {
3582 1.1 christos bfd_vma lo, hi;
3583 1.1 christos
3584 1.1 christos if ((os->flags & SEC_ALLOC) == 0)
3585 1.1 christos continue;
3586 1.1 christos
3587 1.1 christos lo = os->vma;
3588 1.1 christos /* When this function is called from elfNN_ia64_final_link
3589 1.1 christos the correct value to use is os->size. When called from
3590 1.1 christos elfNN_ia64_relax_section we are in the middle of section
3591 1.1 christos sizing; some sections will already have os->size set, others
3592 1.1 christos will have os->size zero and os->rawsize the previous size. */
3593 1.1 christos hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
3594 1.1 christos if (hi < lo)
3595 1.1 christos hi = (bfd_vma) -1;
3596 1.1 christos
3597 1.1 christos if (min_vma > lo)
3598 1.1 christos min_vma = lo;
3599 1.1 christos if (max_vma < hi)
3600 1.1 christos max_vma = hi;
3601 1.1 christos if (os->flags & SEC_SMALL_DATA)
3602 1.1 christos {
3603 1.1 christos if (min_short_vma > lo)
3604 1.1 christos min_short_vma = lo;
3605 1.1 christos if (max_short_vma < hi)
3606 1.1 christos max_short_vma = hi;
3607 1.1 christos }
3608 1.1 christos }
3609 1.1 christos
3610 1.1 christos if (ia64_info->min_short_sec)
3611 1.1 christos {
3612 1.1 christos if (min_short_vma
3613 1.1 christos > (ia64_info->min_short_sec->vma
3614 1.1 christos + ia64_info->min_short_offset))
3615 1.1 christos min_short_vma = (ia64_info->min_short_sec->vma
3616 1.1 christos + ia64_info->min_short_offset);
3617 1.1 christos if (max_short_vma
3618 1.1 christos < (ia64_info->max_short_sec->vma
3619 1.1 christos + ia64_info->max_short_offset))
3620 1.1 christos max_short_vma = (ia64_info->max_short_sec->vma
3621 1.1 christos + ia64_info->max_short_offset);
3622 1.1 christos }
3623 1.1 christos
3624 1.1 christos /* See if the user wants to force a value. */
3625 1.1 christos gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3626 1.1 christos FALSE, FALSE);
3627 1.1 christos
3628 1.1 christos if (gp
3629 1.1 christos && (gp->root.type == bfd_link_hash_defined
3630 1.1 christos || gp->root.type == bfd_link_hash_defweak))
3631 1.1 christos {
3632 1.1 christos asection *gp_sec = gp->root.u.def.section;
3633 1.1 christos gp_val = (gp->root.u.def.value
3634 1.1 christos + gp_sec->output_section->vma
3635 1.1 christos + gp_sec->output_offset);
3636 1.1 christos }
3637 1.1 christos else
3638 1.1 christos {
3639 1.1 christos /* Pick a sensible value. */
3640 1.1 christos
3641 1.1 christos if (ia64_info->min_short_sec)
3642 1.1 christos {
3643 1.1 christos bfd_vma short_range = max_short_vma - min_short_vma;
3644 1.1 christos
3645 1.1 christos /* If min_short_sec is set, pick one in the middle bewteen
3646 1.1 christos min_short_vma and max_short_vma. */
3647 1.1 christos if (short_range >= 0x400000)
3648 1.1 christos goto overflow;
3649 1.1 christos gp_val = min_short_vma + short_range / 2;
3650 1.1 christos }
3651 1.1 christos else
3652 1.1 christos {
3653 1.1 christos asection *got_sec = ia64_info->root.sgot;
3654 1.1 christos
3655 1.1 christos /* Start with just the address of the .got. */
3656 1.1 christos if (got_sec)
3657 1.1 christos gp_val = got_sec->output_section->vma;
3658 1.1 christos else if (max_short_vma != 0)
3659 1.1 christos gp_val = min_short_vma;
3660 1.1 christos else if (max_vma - min_vma < 0x200000)
3661 1.1 christos gp_val = min_vma;
3662 1.1 christos else
3663 1.1 christos gp_val = max_vma - 0x200000 + 8;
3664 1.1 christos }
3665 1.1 christos
3666 1.1 christos /* If it is possible to address the entire image, but we
3667 1.1 christos don't with the choice above, adjust. */
3668 1.1 christos if (max_vma - min_vma < 0x400000
3669 1.1 christos && (max_vma - gp_val >= 0x200000
3670 1.1 christos || gp_val - min_vma > 0x200000))
3671 1.1 christos gp_val = min_vma + 0x200000;
3672 1.1 christos else if (max_short_vma != 0)
3673 1.1 christos {
3674 1.1 christos /* If we don't cover all the short data, adjust. */
3675 1.1 christos if (max_short_vma - gp_val >= 0x200000)
3676 1.1 christos gp_val = min_short_vma + 0x200000;
3677 1.1 christos
3678 1.1 christos /* If we're addressing stuff past the end, adjust back. */
3679 1.1 christos if (gp_val > max_vma)
3680 1.1 christos gp_val = max_vma - 0x200000 + 8;
3681 1.1 christos }
3682 1.1 christos }
3683 1.1 christos
3684 1.1 christos /* Validate whether all SHF_IA_64_SHORT sections are within
3685 1.1 christos range of the chosen GP. */
3686 1.7 christos
3687 1.7 christos if (max_short_vma != 0)
3688 1.7 christos {
3689 1.7 christos if (max_short_vma - min_short_vma >= 0x400000)
3690 1.1 christos {
3691 1.1 christos overflow:
3692 1.1 christos _bfd_error_handler
3693 1.1 christos /* xgettext:c-format */
3694 1.1 christos (_("%B: short data segment overflowed (0x%lx >= 0x400000)"),
3695 1.1 christos abfd, (unsigned long) (max_short_vma - min_short_vma));
3696 1.1 christos return FALSE;
3697 1.7 christos }
3698 1.7 christos else if ((gp_val > min_short_vma
3699 1.1 christos && gp_val - min_short_vma > 0x200000)
3700 1.1 christos || (gp_val < max_short_vma
3701 1.1 christos && max_short_vma - gp_val >= 0x200000))
3702 1.1 christos {
3703 1.1 christos _bfd_error_handler
3704 1.1 christos (_("%B: __gp does not cover short data segment"), abfd);
3705 1.1 christos return FALSE;
3706 1.1 christos }
3707 1.1 christos }
3708 1.1 christos
3709 1.1 christos _bfd_set_gp_value (abfd, gp_val);
3710 1.1 christos
3711 1.1 christos return TRUE;
3712 1.1 christos }
3713 1.1 christos
3714 1.1 christos static bfd_boolean
3715 1.1 christos elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
3716 1.1 christos {
3717 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3718 1.1 christos asection *unwind_output_sec;
3719 1.6 christos
3720 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3721 1.1 christos if (ia64_info == NULL)
3722 1.1 christos return FALSE;
3723 1.1 christos
3724 1.1 christos /* Make sure we've got ourselves a nice fat __gp value. */
3725 1.1 christos if (!bfd_link_relocatable (info))
3726 1.1 christos {
3727 1.1 christos bfd_vma gp_val;
3728 1.1 christos struct elf_link_hash_entry *gp;
3729 1.1 christos
3730 1.1 christos /* We assume after gp is set, section size will only decrease. We
3731 1.1 christos need to adjust gp for it. */
3732 1.1 christos _bfd_set_gp_value (abfd, 0);
3733 1.1 christos if (! elfNN_ia64_choose_gp (abfd, info, TRUE))
3734 1.1 christos return FALSE;
3735 1.1 christos gp_val = _bfd_get_gp_value (abfd);
3736 1.1 christos
3737 1.1 christos gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3738 1.1 christos FALSE, FALSE);
3739 1.1 christos if (gp)
3740 1.1 christos {
3741 1.1 christos gp->root.type = bfd_link_hash_defined;
3742 1.1 christos gp->root.u.def.value = gp_val;
3743 1.1 christos gp->root.u.def.section = bfd_abs_section_ptr;
3744 1.1 christos }
3745 1.6 christos }
3746 1.1 christos
3747 1.1 christos /* If we're producing a final executable, we need to sort the contents
3748 1.1 christos of the .IA_64.unwind section. Force this section to be relocated
3749 1.1 christos into memory rather than written immediately to the output file. */
3750 1.1 christos unwind_output_sec = NULL;
3751 1.1 christos if (!bfd_link_relocatable (info))
3752 1.1 christos {
3753 1.1 christos asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3754 1.1 christos if (s)
3755 1.1 christos {
3756 1.1 christos unwind_output_sec = s->output_section;
3757 1.1 christos unwind_output_sec->contents
3758 1.1 christos = bfd_malloc (unwind_output_sec->size);
3759 1.1 christos if (unwind_output_sec->contents == NULL)
3760 1.1 christos return FALSE;
3761 1.1 christos }
3762 1.1 christos }
3763 1.1 christos
3764 1.1 christos /* Invoke the regular ELF backend linker to do all the work. */
3765 1.1 christos if (!bfd_elf_final_link (abfd, info))
3766 1.1 christos return FALSE;
3767 1.1 christos
3768 1.1 christos if (unwind_output_sec)
3769 1.1 christos {
3770 1.1 christos elfNN_ia64_unwind_entry_compare_bfd = abfd;
3771 1.1 christos qsort (unwind_output_sec->contents,
3772 1.1 christos (size_t) (unwind_output_sec->size / 24),
3773 1.1 christos 24,
3774 1.1 christos elfNN_ia64_unwind_entry_compare);
3775 1.1 christos
3776 1.1 christos if (! bfd_set_section_contents (abfd, unwind_output_sec,
3777 1.1 christos unwind_output_sec->contents, (bfd_vma) 0,
3778 1.1 christos unwind_output_sec->size))
3779 1.1 christos return FALSE;
3780 1.1 christos }
3781 1.1 christos
3782 1.1 christos return TRUE;
3783 1.1 christos }
3784 1.1 christos
3785 1.1 christos static bfd_boolean
3786 1.1 christos elfNN_ia64_relocate_section (bfd *output_bfd,
3787 1.1 christos struct bfd_link_info *info,
3788 1.1 christos bfd *input_bfd,
3789 1.1 christos asection *input_section,
3790 1.1 christos bfd_byte *contents,
3791 1.1 christos Elf_Internal_Rela *relocs,
3792 1.1 christos Elf_Internal_Sym *local_syms,
3793 1.1 christos asection **local_sections)
3794 1.1 christos {
3795 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3796 1.1 christos Elf_Internal_Shdr *symtab_hdr;
3797 1.1 christos Elf_Internal_Rela *rel;
3798 1.1 christos Elf_Internal_Rela *relend;
3799 1.1 christos asection *srel;
3800 1.1 christos bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3801 1.1 christos bfd_vma gp_val;
3802 1.1 christos
3803 1.6 christos symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3804 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3805 1.1 christos if (ia64_info == NULL)
3806 1.1 christos return FALSE;
3807 1.1 christos
3808 1.1 christos /* Infect various flags from the input section to the output section. */
3809 1.1 christos if (bfd_link_relocatable (info))
3810 1.1 christos {
3811 1.1 christos bfd_vma flags;
3812 1.1 christos
3813 1.1 christos flags = elf_section_data(input_section)->this_hdr.sh_flags;
3814 1.1 christos flags &= SHF_IA_64_NORECOV;
3815 1.1 christos
3816 1.1 christos elf_section_data(input_section->output_section)
3817 1.1 christos ->this_hdr.sh_flags |= flags;
3818 1.1 christos }
3819 1.1 christos
3820 1.1 christos gp_val = _bfd_get_gp_value (output_bfd);
3821 1.1 christos srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3822 1.1 christos
3823 1.1 christos rel = relocs;
3824 1.1 christos relend = relocs + input_section->reloc_count;
3825 1.1 christos for (; rel < relend; ++rel)
3826 1.1 christos {
3827 1.1 christos struct elf_link_hash_entry *h;
3828 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
3829 1.1 christos bfd_reloc_status_type r;
3830 1.1 christos reloc_howto_type *howto;
3831 1.1 christos unsigned long r_symndx;
3832 1.1 christos Elf_Internal_Sym *sym;
3833 1.1 christos unsigned int r_type;
3834 1.1 christos bfd_vma value;
3835 1.1 christos asection *sym_sec;
3836 1.1 christos bfd_byte *hit_addr;
3837 1.7 christos bfd_boolean dynamic_symbol_p;
3838 1.7 christos bfd_boolean undef_weak_ref;
3839 1.7 christos
3840 1.1 christos r_type = ELFNN_R_TYPE (rel->r_info);
3841 1.1 christos if (r_type > R_IA64_MAX_RELOC_CODE)
3842 1.1 christos {
3843 1.1 christos _bfd_error_handler
3844 1.1 christos /* xgettext:c-format */
3845 1.1 christos (_("%B: unknown relocation type %d"), input_bfd, (int) r_type);
3846 1.1 christos bfd_set_error (bfd_error_bad_value);
3847 1.1 christos ret_val = FALSE;
3848 1.1 christos continue;
3849 1.1 christos }
3850 1.1 christos
3851 1.1 christos howto = ia64_elf_lookup_howto (r_type);
3852 1.1 christos r_symndx = ELFNN_R_SYM (rel->r_info);
3853 1.1 christos h = NULL;
3854 1.1 christos sym = NULL;
3855 1.1 christos sym_sec = NULL;
3856 1.1 christos undef_weak_ref = FALSE;
3857 1.1 christos
3858 1.1 christos if (r_symndx < symtab_hdr->sh_info)
3859 1.1 christos {
3860 1.6 christos /* Reloc against local symbol. */
3861 1.1 christos asection *msec;
3862 1.1 christos sym = local_syms + r_symndx;
3863 1.1 christos sym_sec = local_sections[r_symndx];
3864 1.1 christos msec = sym_sec;
3865 1.1 christos value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3866 1.1 christos if (!bfd_link_relocatable (info)
3867 1.1 christos && (sym_sec->flags & SEC_MERGE) != 0
3868 1.1 christos && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3869 1.1 christos && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
3870 1.1 christos {
3871 1.1 christos struct elfNN_ia64_local_hash_entry *loc_h;
3872 1.1 christos
3873 1.1 christos loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3874 1.1 christos if (loc_h && ! loc_h->sec_merge_done)
3875 1.1 christos {
3876 1.1 christos struct elfNN_ia64_dyn_sym_info *dynent;
3877 1.1 christos unsigned int count;
3878 1.1 christos
3879 1.1 christos for (count = loc_h->count, dynent = loc_h->info;
3880 1.1 christos count != 0;
3881 1.1 christos count--, dynent++)
3882 1.1 christos {
3883 1.1 christos msec = sym_sec;
3884 1.1 christos dynent->addend =
3885 1.1 christos _bfd_merged_section_offset (output_bfd, &msec,
3886 1.1 christos elf_section_data (msec)->
3887 1.1 christos sec_info,
3888 1.1 christos sym->st_value
3889 1.1 christos + dynent->addend);
3890 1.1 christos dynent->addend -= sym->st_value;
3891 1.1 christos dynent->addend += msec->output_section->vma
3892 1.1 christos + msec->output_offset
3893 1.1 christos - sym_sec->output_section->vma
3894 1.1 christos - sym_sec->output_offset;
3895 1.1 christos }
3896 1.1 christos
3897 1.1 christos /* We may have introduced duplicated entries. We need
3898 1.1 christos to remove them properly. */
3899 1.1 christos count = sort_dyn_sym_info (loc_h->info, loc_h->count);
3900 1.1 christos if (count != loc_h->count)
3901 1.1 christos {
3902 1.1 christos loc_h->count = count;
3903 1.1 christos loc_h->sorted_count = count;
3904 1.1 christos }
3905 1.1 christos
3906 1.1 christos loc_h->sec_merge_done = 1;
3907 1.1 christos }
3908 1.1 christos }
3909 1.1 christos }
3910 1.1 christos else
3911 1.1 christos {
3912 1.1 christos bfd_boolean unresolved_reloc;
3913 1.1 christos bfd_boolean warned, ignored;
3914 1.1 christos struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3915 1.1 christos
3916 1.1 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3917 1.6 christos r_symndx, symtab_hdr, sym_hashes,
3918 1.1 christos h, sym_sec, value,
3919 1.1 christos unresolved_reloc, warned, ignored);
3920 1.1 christos
3921 1.1 christos if (h->root.type == bfd_link_hash_undefweak)
3922 1.1 christos undef_weak_ref = TRUE;
3923 1.1 christos else if (warned || (ignored && bfd_link_executable (info)))
3924 1.1 christos continue;
3925 1.6 christos }
3926 1.1 christos
3927 1.1 christos if (sym_sec != NULL && discarded_section (sym_sec))
3928 1.1 christos RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3929 1.1 christos rel, 1, relend, howto, 0, contents);
3930 1.1 christos
3931 1.1 christos if (bfd_link_relocatable (info))
3932 1.1 christos continue;
3933 1.1 christos
3934 1.1 christos hit_addr = contents + rel->r_offset;
3935 1.1 christos value += rel->r_addend;
3936 1.1 christos dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3937 1.1 christos
3938 1.1 christos switch (r_type)
3939 1.1 christos {
3940 1.1 christos case R_IA64_NONE:
3941 1.1 christos case R_IA64_LDXMOV:
3942 1.1 christos continue;
3943 1.1 christos
3944 1.1 christos case R_IA64_IMM14:
3945 1.1 christos case R_IA64_IMM22:
3946 1.6 christos case R_IA64_IMM64:
3947 1.1 christos case R_IA64_DIR32MSB:
3948 1.1 christos case R_IA64_DIR32LSB:
3949 1.1 christos case R_IA64_DIR64MSB:
3950 1.1 christos case R_IA64_DIR64LSB:
3951 1.1 christos /* Install a dynamic relocation for this reloc. */
3952 1.1 christos if ((dynamic_symbol_p || bfd_link_pic (info))
3953 1.1 christos && r_symndx != STN_UNDEF
3954 1.1 christos && (input_section->flags & SEC_ALLOC) != 0)
3955 1.1 christos {
3956 1.1 christos unsigned int dyn_r_type;
3957 1.1 christos long dynindx;
3958 1.1 christos bfd_vma addend;
3959 1.1 christos
3960 1.1 christos BFD_ASSERT (srel != NULL);
3961 1.1 christos
3962 1.1 christos switch (r_type)
3963 1.7 christos {
3964 1.7 christos case R_IA64_IMM14:
3965 1.1 christos case R_IA64_IMM22:
3966 1.1 christos case R_IA64_IMM64:
3967 1.1 christos /* ??? People shouldn't be doing non-pic code in
3968 1.1 christos shared libraries nor dynamic executables. */
3969 1.1 christos _bfd_error_handler
3970 1.1 christos /* xgettext:c-format */
3971 1.1 christos (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
3972 1.1 christos input_bfd,
3973 1.1 christos h ? h->root.root.string
3974 1.1 christos : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3975 1.1 christos sym_sec));
3976 1.1 christos ret_val = FALSE;
3977 1.1 christos continue;
3978 1.1 christos
3979 1.1 christos default:
3980 1.1 christos break;
3981 1.1 christos }
3982 1.1 christos
3983 1.1 christos /* If we don't need dynamic symbol lookup, find a
3984 1.1 christos matching RELATIVE relocation. */
3985 1.1 christos dyn_r_type = r_type;
3986 1.1 christos if (dynamic_symbol_p)
3987 1.1 christos {
3988 1.1 christos dynindx = h->dynindx;
3989 1.1 christos addend = rel->r_addend;
3990 1.1 christos value = 0;
3991 1.1 christos }
3992 1.1 christos else
3993 1.1 christos {
3994 1.1 christos switch (r_type)
3995 1.1 christos {
3996 1.1 christos case R_IA64_DIR32MSB:
3997 1.1 christos dyn_r_type = R_IA64_REL32MSB;
3998 1.1 christos break;
3999 1.1 christos case R_IA64_DIR32LSB:
4000 1.1 christos dyn_r_type = R_IA64_REL32LSB;
4001 1.1 christos break;
4002 1.1 christos case R_IA64_DIR64MSB:
4003 1.1 christos dyn_r_type = R_IA64_REL64MSB;
4004 1.1 christos break;
4005 1.1 christos case R_IA64_DIR64LSB:
4006 1.1 christos dyn_r_type = R_IA64_REL64LSB;
4007 1.1 christos break;
4008 1.1 christos
4009 1.1 christos default:
4010 1.1 christos break;
4011 1.1 christos }
4012 1.1 christos dynindx = 0;
4013 1.1 christos addend = value;
4014 1.1 christos }
4015 1.1 christos
4016 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4017 1.1 christos srel, rel->r_offset, dyn_r_type,
4018 1.1 christos dynindx, addend);
4019 1.1 christos }
4020 1.1 christos /* Fall through. */
4021 1.1 christos
4022 1.1 christos case R_IA64_LTV32MSB:
4023 1.1 christos case R_IA64_LTV32LSB:
4024 1.1 christos case R_IA64_LTV64MSB:
4025 1.1 christos case R_IA64_LTV64LSB:
4026 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4027 1.1 christos break;
4028 1.1 christos
4029 1.1 christos case R_IA64_GPREL22:
4030 1.1 christos case R_IA64_GPREL64I:
4031 1.7 christos case R_IA64_GPREL32MSB:
4032 1.7 christos case R_IA64_GPREL32LSB:
4033 1.1 christos case R_IA64_GPREL64MSB:
4034 1.1 christos case R_IA64_GPREL64LSB:
4035 1.1 christos if (dynamic_symbol_p)
4036 1.1 christos {
4037 1.1 christos _bfd_error_handler
4038 1.1 christos /* xgettext:c-format */
4039 1.1 christos (_("%B: @gprel relocation against dynamic symbol %s"),
4040 1.1 christos input_bfd,
4041 1.1 christos h ? h->root.root.string
4042 1.1 christos : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4043 1.1 christos sym_sec));
4044 1.1 christos ret_val = FALSE;
4045 1.1 christos continue;
4046 1.1 christos }
4047 1.1 christos value -= gp_val;
4048 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4049 1.1 christos break;
4050 1.1 christos
4051 1.1 christos case R_IA64_LTOFF22:
4052 1.1 christos case R_IA64_LTOFF22X:
4053 1.1 christos case R_IA64_LTOFF64I:
4054 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4055 1.1 christos value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4056 1.1 christos rel->r_addend, value, R_IA64_DIRNNLSB);
4057 1.1 christos value -= gp_val;
4058 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4059 1.1 christos break;
4060 1.1 christos
4061 1.1 christos case R_IA64_PLTOFF22:
4062 1.1 christos case R_IA64_PLTOFF64I:
4063 1.1 christos case R_IA64_PLTOFF64MSB:
4064 1.1 christos case R_IA64_PLTOFF64LSB:
4065 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4066 1.1 christos value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4067 1.1 christos value -= gp_val;
4068 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4069 1.1 christos break;
4070 1.1 christos
4071 1.1 christos case R_IA64_FPTR64I:
4072 1.1 christos case R_IA64_FPTR32MSB:
4073 1.1 christos case R_IA64_FPTR32LSB:
4074 1.1 christos case R_IA64_FPTR64MSB:
4075 1.1 christos case R_IA64_FPTR64LSB:
4076 1.6 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4077 1.1 christos if (dyn_i->want_fptr)
4078 1.1 christos {
4079 1.1 christos if (!undef_weak_ref)
4080 1.1 christos value = set_fptr_entry (output_bfd, info, dyn_i, value);
4081 1.1 christos }
4082 1.1 christos if (!dyn_i->want_fptr || bfd_link_pie (info))
4083 1.1 christos {
4084 1.1 christos long dynindx;
4085 1.1 christos unsigned int dyn_r_type = r_type;
4086 1.1 christos bfd_vma addend = rel->r_addend;
4087 1.1 christos
4088 1.1 christos /* Otherwise, we expect the dynamic linker to create
4089 1.1 christos the entry. */
4090 1.1 christos
4091 1.1 christos if (dyn_i->want_fptr)
4092 1.1 christos {
4093 1.1 christos if (r_type == R_IA64_FPTR64I)
4094 1.1 christos {
4095 1.7 christos /* We can't represent this without a dynamic symbol.
4096 1.1 christos Adjust the relocation to be against an output
4097 1.1 christos section symbol, which are always present in the
4098 1.1 christos dynamic symbol table. */
4099 1.1 christos /* ??? People shouldn't be doing non-pic code in
4100 1.1 christos shared libraries. Hork. */
4101 1.1 christos _bfd_error_handler
4102 1.1 christos (_("%B: linking non-pic code in a position independent executable"),
4103 1.1 christos input_bfd);
4104 1.1 christos ret_val = FALSE;
4105 1.1 christos continue;
4106 1.1 christos }
4107 1.1 christos dynindx = 0;
4108 1.1 christos addend = value;
4109 1.1 christos dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
4110 1.1 christos }
4111 1.1 christos else if (h)
4112 1.1 christos {
4113 1.1 christos if (h->dynindx != -1)
4114 1.1 christos dynindx = h->dynindx;
4115 1.1 christos else
4116 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4117 1.1 christos (info, h->root.u.def.section->owner,
4118 1.1 christos global_sym_index (h)));
4119 1.1 christos value = 0;
4120 1.1 christos }
4121 1.1 christos else
4122 1.1 christos {
4123 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4124 1.1 christos (info, input_bfd, (long) r_symndx));
4125 1.1 christos value = 0;
4126 1.1 christos }
4127 1.1 christos
4128 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4129 1.1 christos srel, rel->r_offset, dyn_r_type,
4130 1.1 christos dynindx, addend);
4131 1.1 christos }
4132 1.1 christos
4133 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4134 1.1 christos break;
4135 1.1 christos
4136 1.1 christos case R_IA64_LTOFF_FPTR22:
4137 1.1 christos case R_IA64_LTOFF_FPTR64I:
4138 1.1 christos case R_IA64_LTOFF_FPTR32MSB:
4139 1.1 christos case R_IA64_LTOFF_FPTR32LSB:
4140 1.1 christos case R_IA64_LTOFF_FPTR64MSB:
4141 1.1 christos case R_IA64_LTOFF_FPTR64LSB:
4142 1.1 christos {
4143 1.1 christos long dynindx;
4144 1.1 christos
4145 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4146 1.1 christos if (dyn_i->want_fptr)
4147 1.1 christos {
4148 1.1 christos BFD_ASSERT (h == NULL || h->dynindx == -1);
4149 1.1 christos if (!undef_weak_ref)
4150 1.1 christos value = set_fptr_entry (output_bfd, info, dyn_i, value);
4151 1.1 christos dynindx = -1;
4152 1.1 christos }
4153 1.1 christos else
4154 1.1 christos {
4155 1.1 christos /* Otherwise, we expect the dynamic linker to create
4156 1.1 christos the entry. */
4157 1.1 christos if (h)
4158 1.1 christos {
4159 1.1 christos if (h->dynindx != -1)
4160 1.1 christos dynindx = h->dynindx;
4161 1.1 christos else
4162 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4163 1.1 christos (info, h->root.u.def.section->owner,
4164 1.1 christos global_sym_index (h)));
4165 1.1 christos }
4166 1.1 christos else
4167 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4168 1.1 christos (info, input_bfd, (long) r_symndx));
4169 1.1 christos value = 0;
4170 1.1 christos }
4171 1.1 christos
4172 1.1 christos value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4173 1.1 christos rel->r_addend, value, R_IA64_FPTRNNLSB);
4174 1.1 christos value -= gp_val;
4175 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4176 1.1 christos }
4177 1.1 christos break;
4178 1.1 christos
4179 1.1 christos case R_IA64_PCREL32MSB:
4180 1.1 christos case R_IA64_PCREL32LSB:
4181 1.1 christos case R_IA64_PCREL64MSB:
4182 1.1 christos case R_IA64_PCREL64LSB:
4183 1.1 christos /* Install a dynamic relocation for this reloc. */
4184 1.1 christos if (dynamic_symbol_p && r_symndx != STN_UNDEF)
4185 1.1 christos {
4186 1.1 christos BFD_ASSERT (srel != NULL);
4187 1.1 christos
4188 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4189 1.1 christos srel, rel->r_offset, r_type,
4190 1.1 christos h->dynindx, rel->r_addend);
4191 1.1 christos }
4192 1.1 christos goto finish_pcrel;
4193 1.1 christos
4194 1.1 christos case R_IA64_PCREL21B:
4195 1.1 christos case R_IA64_PCREL60B:
4196 1.1 christos /* We should have created a PLT entry for any dynamic symbol. */
4197 1.1 christos dyn_i = NULL;
4198 1.1 christos if (h)
4199 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4200 1.1 christos
4201 1.1 christos if (dyn_i && dyn_i->want_plt2)
4202 1.1 christos {
4203 1.1 christos /* Should have caught this earlier. */
4204 1.1 christos BFD_ASSERT (rel->r_addend == 0);
4205 1.1 christos
4206 1.1 christos value = (ia64_info->root.splt->output_section->vma
4207 1.1 christos + ia64_info->root.splt->output_offset
4208 1.1 christos + dyn_i->plt2_offset);
4209 1.1 christos }
4210 1.1 christos else
4211 1.1 christos {
4212 1.1 christos /* Since there's no PLT entry, Validate that this is
4213 1.1 christos locally defined. */
4214 1.1 christos BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4215 1.1 christos
4216 1.1 christos /* If the symbol is undef_weak, we shouldn't be trying
4217 1.1 christos to call it. There's every chance that we'd wind up
4218 1.1 christos with an out-of-range fixup here. Don't bother setting
4219 1.1 christos any value at all. */
4220 1.1 christos if (undef_weak_ref)
4221 1.1 christos continue;
4222 1.1 christos }
4223 1.1 christos goto finish_pcrel;
4224 1.1 christos
4225 1.1 christos case R_IA64_PCREL21BI:
4226 1.1 christos case R_IA64_PCREL21F:
4227 1.1 christos case R_IA64_PCREL21M:
4228 1.1 christos case R_IA64_PCREL22:
4229 1.1 christos case R_IA64_PCREL64I:
4230 1.1 christos /* The PCREL21BI reloc is specifically not intended for use with
4231 1.1 christos dynamic relocs. PCREL21F and PCREL21M are used for speculation
4232 1.1 christos fixup code, and thus probably ought not be dynamic. The
4233 1.7 christos PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4234 1.1 christos if (dynamic_symbol_p)
4235 1.1 christos {
4236 1.7 christos const char *msg;
4237 1.1 christos
4238 1.1 christos if (r_type == R_IA64_PCREL21BI)
4239 1.7 christos /* xgettext:c-format */
4240 1.1 christos msg = _("%B: @internal branch to dynamic symbol %s");
4241 1.7 christos else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4242 1.7 christos /* xgettext:c-format */
4243 1.7 christos msg = _("%B: speculation fixup to dynamic symbol %s");
4244 1.7 christos else
4245 1.7 christos /* xgettext:c-format */
4246 1.7 christos msg = _("%B: @pcrel relocation against dynamic symbol %s");
4247 1.1 christos _bfd_error_handler (msg, input_bfd,
4248 1.1 christos h ? h->root.root.string
4249 1.1 christos : bfd_elf_sym_name (input_bfd,
4250 1.1 christos symtab_hdr,
4251 1.1 christos sym,
4252 1.1 christos sym_sec));
4253 1.1 christos ret_val = FALSE;
4254 1.1 christos continue;
4255 1.1 christos }
4256 1.1 christos goto finish_pcrel;
4257 1.1 christos
4258 1.1 christos finish_pcrel:
4259 1.1 christos /* Make pc-relative. */
4260 1.1 christos value -= (input_section->output_section->vma
4261 1.1 christos + input_section->output_offset
4262 1.1 christos + rel->r_offset) & ~ (bfd_vma) 0x3;
4263 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4264 1.1 christos break;
4265 1.1 christos
4266 1.1 christos case R_IA64_SEGREL32MSB:
4267 1.1 christos case R_IA64_SEGREL32LSB:
4268 1.1 christos case R_IA64_SEGREL64MSB:
4269 1.1 christos case R_IA64_SEGREL64LSB:
4270 1.1 christos {
4271 1.1 christos /* Find the segment that contains the output_section. */
4272 1.1 christos Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
4273 1.1 christos (output_bfd, input_section->output_section);
4274 1.1 christos
4275 1.1 christos if (p == NULL)
4276 1.1 christos {
4277 1.1 christos r = bfd_reloc_notsupported;
4278 1.1 christos }
4279 1.1 christos else
4280 1.1 christos {
4281 1.1 christos /* The VMA of the segment is the vaddr of the associated
4282 1.1 christos program header. */
4283 1.1 christos if (value > p->p_vaddr)
4284 1.1 christos value -= p->p_vaddr;
4285 1.1 christos else
4286 1.1 christos value = 0;
4287 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4288 1.1 christos }
4289 1.1 christos break;
4290 1.1 christos }
4291 1.1 christos
4292 1.1 christos case R_IA64_SECREL32MSB:
4293 1.1 christos case R_IA64_SECREL32LSB:
4294 1.1 christos case R_IA64_SECREL64MSB:
4295 1.1 christos case R_IA64_SECREL64LSB:
4296 1.1 christos /* Make output-section relative to section where the symbol
4297 1.1 christos is defined. PR 475 */
4298 1.1 christos if (sym_sec)
4299 1.1 christos value -= sym_sec->output_section->vma;
4300 1.6 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4301 1.1 christos break;
4302 1.1 christos
4303 1.1 christos case R_IA64_IPLTMSB:
4304 1.1 christos case R_IA64_IPLTLSB:
4305 1.1 christos /* Install a dynamic relocation for this reloc. */
4306 1.1 christos if ((dynamic_symbol_p || bfd_link_pic (info))
4307 1.1 christos && (input_section->flags & SEC_ALLOC) != 0)
4308 1.1 christos {
4309 1.1 christos BFD_ASSERT (srel != NULL);
4310 1.1 christos
4311 1.1 christos /* If we don't need dynamic symbol lookup, install two
4312 1.1 christos RELATIVE relocations. */
4313 1.1 christos if (!dynamic_symbol_p)
4314 1.1 christos {
4315 1.1 christos unsigned int dyn_r_type;
4316 1.1 christos
4317 1.1 christos if (r_type == R_IA64_IPLTMSB)
4318 1.1 christos dyn_r_type = R_IA64_REL64MSB;
4319 1.1 christos else
4320 1.1 christos dyn_r_type = R_IA64_REL64LSB;
4321 1.1 christos
4322 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info,
4323 1.1 christos input_section,
4324 1.1 christos srel, rel->r_offset,
4325 1.1 christos dyn_r_type, 0, value);
4326 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info,
4327 1.1 christos input_section,
4328 1.1 christos srel, rel->r_offset + 8,
4329 1.1 christos dyn_r_type, 0, gp_val);
4330 1.1 christos }
4331 1.1 christos else
4332 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4333 1.1 christos srel, rel->r_offset, r_type,
4334 1.1 christos h->dynindx, rel->r_addend);
4335 1.1 christos }
4336 1.1 christos
4337 1.1 christos if (r_type == R_IA64_IPLTMSB)
4338 1.1 christos r_type = R_IA64_DIR64MSB;
4339 1.1 christos else
4340 1.1 christos r_type = R_IA64_DIR64LSB;
4341 1.1 christos ia64_elf_install_value (hit_addr, value, r_type);
4342 1.1 christos r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
4343 1.1 christos break;
4344 1.1 christos
4345 1.1 christos case R_IA64_TPREL14:
4346 1.1 christos case R_IA64_TPREL22:
4347 1.1 christos case R_IA64_TPREL64I:
4348 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4349 1.1 christos goto missing_tls_sec;
4350 1.1 christos value -= elfNN_ia64_tprel_base (info);
4351 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4352 1.1 christos break;
4353 1.1 christos
4354 1.1 christos case R_IA64_DTPREL14:
4355 1.1 christos case R_IA64_DTPREL22:
4356 1.1 christos case R_IA64_DTPREL64I:
4357 1.1 christos case R_IA64_DTPREL32LSB:
4358 1.1 christos case R_IA64_DTPREL32MSB:
4359 1.1 christos case R_IA64_DTPREL64LSB:
4360 1.1 christos case R_IA64_DTPREL64MSB:
4361 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4362 1.1 christos goto missing_tls_sec;
4363 1.1 christos value -= elfNN_ia64_dtprel_base (info);
4364 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4365 1.1 christos break;
4366 1.1 christos
4367 1.1 christos case R_IA64_LTOFF_TPREL22:
4368 1.1 christos case R_IA64_LTOFF_DTPMOD22:
4369 1.1 christos case R_IA64_LTOFF_DTPREL22:
4370 1.1 christos {
4371 1.1 christos int got_r_type;
4372 1.1 christos long dynindx = h ? h->dynindx : -1;
4373 1.1 christos bfd_vma r_addend = rel->r_addend;
4374 1.1 christos
4375 1.1 christos switch (r_type)
4376 1.1 christos {
4377 1.6 christos default:
4378 1.1 christos case R_IA64_LTOFF_TPREL22:
4379 1.1 christos if (!dynamic_symbol_p)
4380 1.1 christos {
4381 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4382 1.1 christos goto missing_tls_sec;
4383 1.1 christos if (!bfd_link_pic (info))
4384 1.1 christos value -= elfNN_ia64_tprel_base (info);
4385 1.1 christos else
4386 1.1 christos {
4387 1.1 christos r_addend += value - elfNN_ia64_dtprel_base (info);
4388 1.6 christos dynindx = 0;
4389 1.1 christos }
4390 1.1 christos }
4391 1.1 christos got_r_type = R_IA64_TPREL64LSB;
4392 1.1 christos break;
4393 1.1 christos case R_IA64_LTOFF_DTPMOD22:
4394 1.1 christos if (!dynamic_symbol_p && !bfd_link_pic (info))
4395 1.1 christos value = 1;
4396 1.1 christos got_r_type = R_IA64_DTPMOD64LSB;
4397 1.1 christos break;
4398 1.1 christos case R_IA64_LTOFF_DTPREL22:
4399 1.1 christos if (!dynamic_symbol_p)
4400 1.1 christos {
4401 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4402 1.1 christos goto missing_tls_sec;
4403 1.1 christos value -= elfNN_ia64_dtprel_base (info);
4404 1.1 christos }
4405 1.1 christos got_r_type = R_IA64_DTPRELNNLSB;
4406 1.1 christos break;
4407 1.1 christos }
4408 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4409 1.1 christos value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4410 1.1 christos value, got_r_type);
4411 1.1 christos value -= gp_val;
4412 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4413 1.1 christos }
4414 1.1 christos break;
4415 1.1 christos
4416 1.1 christos default:
4417 1.1 christos r = bfd_reloc_notsupported;
4418 1.1 christos break;
4419 1.1 christos }
4420 1.1 christos
4421 1.1 christos switch (r)
4422 1.1 christos {
4423 1.1 christos case bfd_reloc_ok:
4424 1.1 christos break;
4425 1.1 christos
4426 1.1 christos case bfd_reloc_undefined:
4427 1.1 christos /* This can happen for global table relative relocs if
4428 1.1 christos __gp is undefined. This is a panic situation so we
4429 1.1 christos don't try to continue. */
4430 1.1 christos (*info->callbacks->undefined_symbol)
4431 1.1 christos (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4432 1.1 christos return FALSE;
4433 1.1 christos
4434 1.1 christos case bfd_reloc_notsupported:
4435 1.1 christos {
4436 1.1 christos const char *name;
4437 1.6 christos
4438 1.6 christos if (h)
4439 1.6 christos name = h->root.root.string;
4440 1.1 christos else
4441 1.1 christos name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4442 1.1 christos sym_sec);
4443 1.1 christos (*info->callbacks->warning) (info, _("unsupported reloc"),
4444 1.1 christos name, input_bfd,
4445 1.1 christos input_section, rel->r_offset);
4446 1.1 christos ret_val = FALSE;
4447 1.1 christos }
4448 1.1 christos break;
4449 1.1 christos
4450 1.1 christos case bfd_reloc_dangerous:
4451 1.1 christos case bfd_reloc_outofrange:
4452 1.1 christos case bfd_reloc_overflow:
4453 1.1 christos default:
4454 1.1 christos missing_tls_sec:
4455 1.1 christos {
4456 1.1 christos const char *name;
4457 1.1 christos
4458 1.1 christos if (h)
4459 1.1 christos name = h->root.root.string;
4460 1.1 christos else
4461 1.1 christos name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4462 1.1 christos sym_sec);
4463 1.1 christos
4464 1.1 christos switch (r_type)
4465 1.1 christos {
4466 1.1 christos case R_IA64_TPREL14:
4467 1.1 christos case R_IA64_TPREL22:
4468 1.1 christos case R_IA64_TPREL64I:
4469 1.1 christos case R_IA64_DTPREL14:
4470 1.1 christos case R_IA64_DTPREL22:
4471 1.1 christos case R_IA64_DTPREL64I:
4472 1.1 christos case R_IA64_DTPREL32LSB:
4473 1.7 christos case R_IA64_DTPREL32MSB:
4474 1.7 christos case R_IA64_DTPREL64LSB:
4475 1.7 christos case R_IA64_DTPREL64MSB:
4476 1.7 christos case R_IA64_LTOFF_TPREL22:
4477 1.7 christos case R_IA64_LTOFF_DTPMOD22:
4478 1.7 christos case R_IA64_LTOFF_DTPREL22:
4479 1.1 christos _bfd_error_handler
4480 1.1 christos /* xgettext:c-format */
4481 1.1 christos (_("%B: missing TLS section for relocation %s against `%s'"
4482 1.1 christos " at 0x%lx in section `%A'."),
4483 1.1 christos input_bfd, howto->name, name,
4484 1.1 christos rel->r_offset, input_section);
4485 1.1 christos break;
4486 1.1 christos
4487 1.1 christos case R_IA64_PCREL21B:
4488 1.1 christos case R_IA64_PCREL21BI:
4489 1.1 christos case R_IA64_PCREL21M:
4490 1.7 christos case R_IA64_PCREL21F:
4491 1.7 christos if (is_elf_hash_table (info->hash))
4492 1.7 christos {
4493 1.7 christos /* Relaxtion is always performed for ELF output.
4494 1.7 christos Overflow failures for those relocations mean
4495 1.7 christos that the section is too big to relax. */
4496 1.1 christos _bfd_error_handler
4497 1.1 christos /* xgettext:c-format */
4498 1.7 christos (_("%B: Can't relax br (%s) to `%s' at 0x%lx"
4499 1.1 christos " in section `%A' with size 0x%lx (> 0x1000000)."),
4500 1.6 christos input_bfd, howto->name, name, rel->r_offset,
4501 1.6 christos input_section, input_section->size);
4502 1.6 christos break;
4503 1.6 christos }
4504 1.6 christos /* Fall through. */
4505 1.6 christos default:
4506 1.6 christos (*info->callbacks->reloc_overflow) (info,
4507 1.6 christos &h->root,
4508 1.1 christos name,
4509 1.1 christos howto->name,
4510 1.1 christos (bfd_vma) 0,
4511 1.1 christos input_bfd,
4512 1.1 christos input_section,
4513 1.1 christos rel->r_offset);
4514 1.1 christos break;
4515 1.1 christos }
4516 1.1 christos
4517 1.1 christos ret_val = FALSE;
4518 1.1 christos }
4519 1.1 christos break;
4520 1.1 christos }
4521 1.1 christos }
4522 1.1 christos
4523 1.1 christos return ret_val;
4524 1.1 christos }
4525 1.1 christos
4526 1.1 christos static bfd_boolean
4527 1.1 christos elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd,
4528 1.1 christos struct bfd_link_info *info,
4529 1.1 christos struct elf_link_hash_entry *h,
4530 1.1 christos Elf_Internal_Sym *sym)
4531 1.1 christos {
4532 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
4533 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
4534 1.1 christos
4535 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
4536 1.1 christos if (ia64_info == NULL)
4537 1.1 christos return FALSE;
4538 1.1 christos
4539 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4540 1.1 christos
4541 1.1 christos /* Fill in the PLT data, if required. */
4542 1.1 christos if (dyn_i && dyn_i->want_plt)
4543 1.1 christos {
4544 1.1 christos Elf_Internal_Rela outrel;
4545 1.1 christos bfd_byte *loc;
4546 1.1 christos asection *plt_sec;
4547 1.1 christos bfd_vma plt_addr, pltoff_addr, gp_val, plt_index;
4548 1.1 christos
4549 1.1 christos gp_val = _bfd_get_gp_value (output_bfd);
4550 1.1 christos
4551 1.1 christos /* Initialize the minimal PLT entry. */
4552 1.1 christos
4553 1.1 christos plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4554 1.1 christos plt_sec = ia64_info->root.splt;
4555 1.1 christos loc = plt_sec->contents + dyn_i->plt_offset;
4556 1.1 christos
4557 1.1 christos memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4558 1.1 christos ia64_elf_install_value (loc, plt_index, R_IA64_IMM22);
4559 1.1 christos ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4560 1.1 christos
4561 1.1 christos plt_addr = (plt_sec->output_section->vma
4562 1.1 christos + plt_sec->output_offset
4563 1.1 christos + dyn_i->plt_offset);
4564 1.1 christos pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4565 1.1 christos
4566 1.1 christos /* Initialize the FULL PLT entry, if needed. */
4567 1.1 christos if (dyn_i->want_plt2)
4568 1.1 christos {
4569 1.1 christos loc = plt_sec->contents + dyn_i->plt2_offset;
4570 1.1 christos
4571 1.1 christos memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4572 1.1 christos ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4573 1.1 christos
4574 1.1 christos /* Mark the symbol as undefined, rather than as defined in the
4575 1.1 christos plt section. Leave the value alone. */
4576 1.1 christos /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4577 1.1 christos first place. But perhaps elflink.c did some for us. */
4578 1.1 christos if (!h->def_regular)
4579 1.1 christos sym->st_shndx = SHN_UNDEF;
4580 1.1 christos }
4581 1.1 christos
4582 1.1 christos /* Create the dynamic relocation. */
4583 1.1 christos outrel.r_offset = pltoff_addr;
4584 1.1 christos if (bfd_little_endian (output_bfd))
4585 1.1 christos outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4586 1.1 christos else
4587 1.1 christos outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4588 1.1 christos outrel.r_addend = 0;
4589 1.1 christos
4590 1.1 christos /* This is fun. In the .IA_64.pltoff section, we've got entries
4591 1.1 christos that correspond both to real PLT entries, and those that
4592 1.1 christos happened to resolve to local symbols but need to be created
4593 1.1 christos to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4594 1.1 christos relocations for the real PLT should come at the end of the
4595 1.1 christos section, so that they can be indexed by plt entry at runtime.
4596 1.1 christos
4597 1.1 christos We emitted all of the relocations for the non-PLT @pltoff
4598 1.1 christos entries during relocate_section. So we can consider the
4599 1.1 christos existing sec->reloc_count to be the base of the array of
4600 1.1 christos PLT relocations. */
4601 1.1 christos
4602 1.1 christos loc = ia64_info->rel_pltoff_sec->contents;
4603 1.1 christos loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index)
4604 1.1 christos * sizeof (ElfNN_External_Rela));
4605 1.1 christos bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4606 1.1 christos }
4607 1.1 christos
4608 1.1 christos /* Mark some specially defined symbols as absolute. */
4609 1.1 christos if (h == ia64_info->root.hdynamic
4610 1.1 christos || h == ia64_info->root.hgot
4611 1.1 christos || h == ia64_info->root.hplt)
4612 1.1 christos sym->st_shndx = SHN_ABS;
4613 1.1 christos
4614 1.1 christos return TRUE;
4615 1.1 christos }
4616 1.1 christos
4617 1.1 christos static bfd_boolean
4618 1.1 christos elfNN_ia64_finish_dynamic_sections (bfd *abfd,
4619 1.1 christos struct bfd_link_info *info)
4620 1.1 christos {
4621 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
4622 1.1 christos bfd *dynobj;
4623 1.1 christos
4624 1.7 christos ia64_info = elfNN_ia64_hash_table (info);
4625 1.1 christos if (ia64_info == NULL)
4626 1.1 christos return FALSE;
4627 1.1 christos
4628 1.1 christos dynobj = ia64_info->root.dynobj;
4629 1.1 christos
4630 1.1 christos if (ia64_info->root.dynamic_sections_created)
4631 1.7 christos {
4632 1.1 christos ElfNN_External_Dyn *dyncon, *dynconend;
4633 1.1 christos asection *sdyn, *sgotplt;
4634 1.1 christos bfd_vma gp_val;
4635 1.1 christos
4636 1.1 christos sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4637 1.1 christos sgotplt = ia64_info->root.sgotplt;
4638 1.1 christos BFD_ASSERT (sdyn != NULL);
4639 1.1 christos dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4640 1.1 christos dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4641 1.1 christos
4642 1.1 christos gp_val = _bfd_get_gp_value (abfd);
4643 1.1 christos
4644 1.1 christos for (; dyncon < dynconend; dyncon++)
4645 1.1 christos {
4646 1.1 christos Elf_Internal_Dyn dyn;
4647 1.1 christos
4648 1.1 christos bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4649 1.1 christos
4650 1.1 christos switch (dyn.d_tag)
4651 1.1 christos {
4652 1.1 christos case DT_PLTGOT:
4653 1.1 christos dyn.d_un.d_ptr = gp_val;
4654 1.1 christos break;
4655 1.1 christos
4656 1.1 christos case DT_PLTRELSZ:
4657 1.1 christos dyn.d_un.d_val = (ia64_info->minplt_entries
4658 1.1 christos * sizeof (ElfNN_External_Rela));
4659 1.1 christos break;
4660 1.1 christos
4661 1.1 christos case DT_JMPREL:
4662 1.1 christos /* See the comment above in finish_dynamic_symbol. */
4663 1.1 christos dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4664 1.1 christos + ia64_info->rel_pltoff_sec->output_offset
4665 1.1 christos + (ia64_info->rel_pltoff_sec->reloc_count
4666 1.1 christos * sizeof (ElfNN_External_Rela)));
4667 1.1 christos break;
4668 1.1 christos
4669 1.1 christos case DT_IA_64_PLT_RESERVE:
4670 1.1 christos dyn.d_un.d_ptr = (sgotplt->output_section->vma
4671 1.1 christos + sgotplt->output_offset);
4672 1.1 christos break;
4673 1.1 christos }
4674 1.1 christos
4675 1.1 christos bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4676 1.1 christos }
4677 1.1 christos
4678 1.1 christos /* Initialize the PLT0 entry. */
4679 1.1 christos if (ia64_info->root.splt)
4680 1.1 christos {
4681 1.1 christos bfd_byte *loc = ia64_info->root.splt->contents;
4682 1.1 christos bfd_vma pltres;
4683 1.1 christos
4684 1.1 christos memcpy (loc, plt_header, PLT_HEADER_SIZE);
4685 1.1 christos
4686 1.1 christos pltres = (sgotplt->output_section->vma
4687 1.1 christos + sgotplt->output_offset
4688 1.1 christos - gp_val);
4689 1.1 christos
4690 1.1 christos ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22);
4691 1.1 christos }
4692 1.1 christos }
4693 1.1 christos
4694 1.1 christos return TRUE;
4695 1.1 christos }
4696 1.1 christos
4697 1.1 christos /* ELF file flag handling: */
4699 1.1 christos
4700 1.1 christos /* Function to keep IA-64 specific file flags. */
4701 1.1 christos static bfd_boolean
4702 1.1 christos elfNN_ia64_set_private_flags (bfd *abfd, flagword flags)
4703 1.1 christos {
4704 1.1 christos BFD_ASSERT (!elf_flags_init (abfd)
4705 1.1 christos || elf_elfheader (abfd)->e_flags == flags);
4706 1.1 christos
4707 1.1 christos elf_elfheader (abfd)->e_flags = flags;
4708 1.7 christos elf_flags_init (abfd) = TRUE;
4709 1.1 christos return TRUE;
4710 1.7 christos }
4711 1.1 christos
4712 1.1 christos /* Merge backend specific data from an object file to the output
4713 1.1 christos object file when linking. */
4714 1.1 christos static bfd_boolean
4715 1.1 christos elfNN_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4716 1.1 christos {
4717 1.1 christos bfd *obfd = info->output_bfd;
4718 1.1 christos flagword out_flags;
4719 1.1 christos flagword in_flags;
4720 1.1 christos bfd_boolean ok = TRUE;
4721 1.1 christos
4722 1.1 christos /* Don't even pretend to support mixed-format linking. */
4723 1.1 christos if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4724 1.1 christos || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4725 1.1 christos return FALSE;
4726 1.1 christos
4727 1.1 christos in_flags = elf_elfheader (ibfd)->e_flags;
4728 1.1 christos out_flags = elf_elfheader (obfd)->e_flags;
4729 1.1 christos
4730 1.1 christos if (! elf_flags_init (obfd))
4731 1.1 christos {
4732 1.1 christos elf_flags_init (obfd) = TRUE;
4733 1.1 christos elf_elfheader (obfd)->e_flags = in_flags;
4734 1.1 christos
4735 1.1 christos if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4736 1.1 christos && bfd_get_arch_info (obfd)->the_default)
4737 1.1 christos {
4738 1.1 christos return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4739 1.1 christos bfd_get_mach (ibfd));
4740 1.1 christos }
4741 1.1 christos
4742 1.1 christos return TRUE;
4743 1.1 christos }
4744 1.1 christos
4745 1.1 christos /* Check flag compatibility. */
4746 1.1 christos if (in_flags == out_flags)
4747 1.1 christos return TRUE;
4748 1.7 christos
4749 1.1 christos /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4750 1.1 christos if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4751 1.1 christos elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4752 1.1 christos
4753 1.1 christos if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4754 1.1 christos {
4755 1.1 christos _bfd_error_handler
4756 1.1 christos (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4757 1.7 christos ibfd);
4758 1.1 christos
4759 1.1 christos bfd_set_error (bfd_error_bad_value);
4760 1.1 christos ok = FALSE;
4761 1.1 christos }
4762 1.1 christos if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4763 1.1 christos {
4764 1.1 christos _bfd_error_handler
4765 1.1 christos (_("%B: linking big-endian files with little-endian files"),
4766 1.7 christos ibfd);
4767 1.1 christos
4768 1.1 christos bfd_set_error (bfd_error_bad_value);
4769 1.1 christos ok = FALSE;
4770 1.1 christos }
4771 1.1 christos if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4772 1.1 christos {
4773 1.1 christos _bfd_error_handler
4774 1.1 christos (_("%B: linking 64-bit files with 32-bit files"),
4775 1.7 christos ibfd);
4776 1.1 christos
4777 1.1 christos bfd_set_error (bfd_error_bad_value);
4778 1.1 christos ok = FALSE;
4779 1.1 christos }
4780 1.1 christos if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4781 1.1 christos {
4782 1.1 christos _bfd_error_handler
4783 1.1 christos (_("%B: linking constant-gp files with non-constant-gp files"),
4784 1.1 christos ibfd);
4785 1.7 christos
4786 1.1 christos bfd_set_error (bfd_error_bad_value);
4787 1.1 christos ok = FALSE;
4788 1.1 christos }
4789 1.1 christos if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4790 1.1 christos != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4791 1.1 christos {
4792 1.1 christos _bfd_error_handler
4793 1.1 christos (_("%B: linking auto-pic files with non-auto-pic files"),
4794 1.1 christos ibfd);
4795 1.1 christos
4796 1.1 christos bfd_set_error (bfd_error_bad_value);
4797 1.1 christos ok = FALSE;
4798 1.1 christos }
4799 1.1 christos
4800 1.1 christos return ok;
4801 1.1 christos }
4802 1.1 christos
4803 1.1 christos static bfd_boolean
4804 1.1 christos elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr)
4805 1.1 christos {
4806 1.1 christos FILE *file = (FILE *) ptr;
4807 1.1 christos flagword flags = elf_elfheader (abfd)->e_flags;
4808 1.1 christos
4809 1.1 christos BFD_ASSERT (abfd != NULL && ptr != NULL);
4810 1.1 christos
4811 1.1 christos fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4812 1.1 christos (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4813 1.1 christos (flags & EF_IA_64_EXT) ? "EXT, " : "",
4814 1.1 christos (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4815 1.1 christos (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4816 1.1 christos (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4817 1.1 christos (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4818 1.1 christos (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4819 1.1 christos (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4820 1.1 christos
4821 1.1 christos _bfd_elf_print_private_bfd_data (abfd, ptr);
4822 1.1 christos return TRUE;
4823 1.1 christos }
4824 1.1 christos
4825 1.1 christos static enum elf_reloc_type_class
4826 1.1 christos elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4827 1.1 christos const asection *rel_sec ATTRIBUTE_UNUSED,
4828 1.1 christos const Elf_Internal_Rela *rela)
4829 1.1 christos {
4830 1.1 christos switch ((int) ELFNN_R_TYPE (rela->r_info))
4831 1.1 christos {
4832 1.1 christos case R_IA64_REL32MSB:
4833 1.1 christos case R_IA64_REL32LSB:
4834 1.1 christos case R_IA64_REL64MSB:
4835 1.1 christos case R_IA64_REL64LSB:
4836 1.1 christos return reloc_class_relative;
4837 1.1 christos case R_IA64_IPLTMSB:
4838 1.1 christos case R_IA64_IPLTLSB:
4839 1.1 christos return reloc_class_plt;
4840 1.1 christos case R_IA64_COPY:
4841 1.1 christos return reloc_class_copy;
4842 1.1 christos default:
4843 1.1 christos return reloc_class_normal;
4844 1.1 christos }
4845 1.1 christos }
4846 1.1 christos
4847 1.1 christos static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
4848 1.1 christos {
4849 1.1 christos { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4850 1.1 christos { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4851 1.1 christos { NULL, 0, 0, 0, 0 }
4852 1.1 christos };
4853 1.1 christos
4854 1.1 christos static bfd_boolean
4855 1.1 christos elfNN_ia64_object_p (bfd *abfd)
4856 1.1 christos {
4857 1.1 christos asection *sec;
4858 1.1 christos asection *group, *unwi, *unw;
4859 1.1 christos flagword flags;
4860 1.1 christos const char *name;
4861 1.1 christos char *unwi_name, *unw_name;
4862 1.1 christos bfd_size_type amt;
4863 1.1 christos
4864 1.1 christos if (abfd->flags & DYNAMIC)
4865 1.1 christos return TRUE;
4866 1.1 christos
4867 1.1 christos /* Flags for fake group section. */
4868 1.1 christos flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
4869 1.1 christos | SEC_EXCLUDE);
4870 1.1 christos
4871 1.1 christos /* We add a fake section group for each .gnu.linkonce.t.* section,
4872 1.1 christos which isn't in a section group, and its unwind sections. */
4873 1.1 christos for (sec = abfd->sections; sec != NULL; sec = sec->next)
4874 1.1 christos {
4875 1.1 christos if (elf_sec_group (sec) == NULL
4876 1.1 christos && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
4877 1.1 christos == (SEC_LINK_ONCE | SEC_CODE))
4878 1.1 christos && CONST_STRNEQ (sec->name, ".gnu.linkonce.t."))
4879 1.1 christos {
4880 1.1 christos name = sec->name + 16;
4881 1.1 christos
4882 1.1 christos amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
4883 1.1 christos unwi_name = bfd_alloc (abfd, amt);
4884 1.1 christos if (!unwi_name)
4885 1.1 christos return FALSE;
4886 1.1 christos
4887 1.1 christos strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
4888 1.1 christos unwi = bfd_get_section_by_name (abfd, unwi_name);
4889 1.1 christos
4890 1.1 christos amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
4891 1.1 christos unw_name = bfd_alloc (abfd, amt);
4892 1.1 christos if (!unw_name)
4893 1.1 christos return FALSE;
4894 1.1 christos
4895 1.1 christos strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
4896 1.1 christos unw = bfd_get_section_by_name (abfd, unw_name);
4897 1.1 christos
4898 1.1 christos /* We need to create a fake group section for it and its
4899 1.1 christos unwind sections. */
4900 1.1 christos group = bfd_make_section_anyway_with_flags (abfd, name,
4901 1.1 christos flags);
4902 1.1 christos if (group == NULL)
4903 1.1 christos return FALSE;
4904 1.1 christos
4905 1.1 christos /* Move the fake group section to the beginning. */
4906 1.1 christos bfd_section_list_remove (abfd, group);
4907 1.1 christos bfd_section_list_prepend (abfd, group);
4908 1.1 christos
4909 1.1 christos elf_next_in_group (group) = sec;
4910 1.1 christos
4911 1.1 christos elf_group_name (sec) = name;
4912 1.1 christos elf_next_in_group (sec) = sec;
4913 1.1 christos elf_sec_group (sec) = group;
4914 1.1 christos
4915 1.1 christos if (unwi)
4916 1.1 christos {
4917 1.1 christos elf_group_name (unwi) = name;
4918 1.1 christos elf_next_in_group (unwi) = sec;
4919 1.1 christos elf_next_in_group (sec) = unwi;
4920 1.1 christos elf_sec_group (unwi) = group;
4921 1.1 christos }
4922 1.1 christos
4923 1.1 christos if (unw)
4924 1.1 christos {
4925 1.1 christos elf_group_name (unw) = name;
4926 1.1 christos if (unwi)
4927 1.1 christos {
4928 1.1 christos elf_next_in_group (unw) = elf_next_in_group (unwi);
4929 1.1 christos elf_next_in_group (unwi) = unw;
4930 1.1 christos }
4931 1.1 christos else
4932 1.1 christos {
4933 1.1 christos elf_next_in_group (unw) = sec;
4934 1.1 christos elf_next_in_group (sec) = unw;
4935 1.1 christos }
4936 1.1 christos elf_sec_group (unw) = group;
4937 1.1 christos }
4938 1.1 christos
4939 1.1 christos /* Fake SHT_GROUP section header. */
4940 1.1 christos elf_section_data (group)->this_hdr.bfd_section = group;
4941 1.1 christos elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
4942 1.1 christos }
4943 1.3 christos }
4944 1.3 christos return TRUE;
4945 1.1 christos }
4946 1.1 christos
4947 1.1 christos static bfd_boolean
4948 1.1 christos elfNN_ia64_hpux_vec (const bfd_target *vec)
4949 1.1 christos {
4950 1.1 christos extern const bfd_target ia64_elfNN_hpux_be_vec;
4951 1.1 christos return (vec == &ia64_elfNN_hpux_be_vec);
4952 1.1 christos }
4953 1.1 christos
4954 1.1 christos static void
4955 1.1 christos elfNN_hpux_post_process_headers (bfd *abfd,
4956 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
4957 1.1 christos {
4958 1.1 christos Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4959 1.1 christos
4960 1.1 christos i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
4961 1.1 christos i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4962 1.1 christos }
4963 1.1 christos
4964 1.1 christos static bfd_boolean
4965 1.1 christos elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4966 1.1 christos asection *sec, int *retval)
4967 1.1 christos {
4968 1.1 christos if (bfd_is_com_section (sec))
4969 1.1 christos {
4970 1.1 christos *retval = SHN_IA_64_ANSI_COMMON;
4971 1.1 christos return TRUE;
4972 1.1 christos }
4973 1.1 christos return FALSE;
4974 1.1 christos }
4975 1.1 christos
4976 1.1 christos static void
4977 1.1 christos elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4978 1.1 christos asymbol *asym)
4979 1.1 christos {
4980 1.1 christos elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4981 1.1 christos
4982 1.1 christos switch (elfsym->internal_elf_sym.st_shndx)
4983 1.1 christos {
4984 1.1 christos case SHN_IA_64_ANSI_COMMON:
4985 1.3 christos asym->section = bfd_com_section_ptr;
4986 1.1 christos asym->value = elfsym->internal_elf_sym.st_size;
4987 1.3 christos asym->flags &= ~BSF_GLOBAL;
4988 1.1 christos break;
4989 1.1 christos }
4990 1.1 christos }
4991 1.1 christos
4992 1.1 christos #define TARGET_LITTLE_SYM ia64_elfNN_le_vec
4994 1.1 christos #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4995 1.1 christos #define TARGET_BIG_SYM ia64_elfNN_be_vec
4996 1.1 christos #define TARGET_BIG_NAME "elfNN-ia64-big"
4997 1.1 christos #define ELF_ARCH bfd_arch_ia64
4998 1.1 christos #define ELF_TARGET_ID IA64_ELF_DATA
4999 1.1 christos #define ELF_MACHINE_CODE EM_IA_64
5000 1.1 christos #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
5001 1.1 christos #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
5002 1.1 christos #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
5003 1.1 christos #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
5004 1.1 christos
5005 1.1 christos #define elf_backend_section_from_shdr \
5006 1.1 christos elfNN_ia64_section_from_shdr
5007 1.1 christos #define elf_backend_section_flags \
5008 1.1 christos elfNN_ia64_section_flags
5009 1.1 christos #define elf_backend_fake_sections \
5010 1.1 christos elfNN_ia64_fake_sections
5011 1.1 christos #define elf_backend_final_write_processing \
5012 1.1 christos elfNN_ia64_final_write_processing
5013 1.1 christos #define elf_backend_add_symbol_hook \
5014 1.1 christos elfNN_ia64_add_symbol_hook
5015 1.1 christos #define elf_backend_additional_program_headers \
5016 1.1 christos elfNN_ia64_additional_program_headers
5017 1.1 christos #define elf_backend_modify_segment_map \
5018 1.1 christos elfNN_ia64_modify_segment_map
5019 1.1 christos #define elf_backend_modify_program_headers \
5020 1.1 christos elfNN_ia64_modify_program_headers
5021 1.1 christos #define elf_info_to_howto \
5022 1.1 christos elfNN_ia64_info_to_howto
5023 1.1 christos
5024 1.1 christos #define bfd_elfNN_bfd_reloc_type_lookup \
5025 1.1 christos ia64_elf_reloc_type_lookup
5026 1.1 christos #define bfd_elfNN_bfd_reloc_name_lookup \
5027 1.1 christos ia64_elf_reloc_name_lookup
5028 1.1 christos #define bfd_elfNN_bfd_is_local_label_name \
5029 1.1 christos elfNN_ia64_is_local_label_name
5030 1.1 christos #define bfd_elfNN_bfd_relax_section \
5031 1.1 christos elfNN_ia64_relax_section
5032 1.1 christos
5033 1.1 christos #define elf_backend_object_p \
5034 1.1 christos elfNN_ia64_object_p
5035 1.1 christos
5036 1.1 christos /* Stuff for the BFD linker: */
5037 1.1 christos #define bfd_elfNN_bfd_link_hash_table_create \
5038 1.1 christos elfNN_ia64_hash_table_create
5039 1.1 christos #define elf_backend_create_dynamic_sections \
5040 1.1 christos elfNN_ia64_create_dynamic_sections
5041 1.1 christos #define elf_backend_check_relocs \
5042 1.1 christos elfNN_ia64_check_relocs
5043 1.1 christos #define elf_backend_adjust_dynamic_symbol \
5044 1.1 christos elfNN_ia64_adjust_dynamic_symbol
5045 1.1 christos #define elf_backend_size_dynamic_sections \
5046 1.1 christos elfNN_ia64_size_dynamic_sections
5047 1.1 christos #define elf_backend_omit_section_dynsym \
5048 1.1 christos ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
5049 1.1 christos #define elf_backend_relocate_section \
5050 1.1 christos elfNN_ia64_relocate_section
5051 1.1 christos #define elf_backend_finish_dynamic_symbol \
5052 1.1 christos elfNN_ia64_finish_dynamic_symbol
5053 1.1 christos #define elf_backend_finish_dynamic_sections \
5054 1.1 christos elfNN_ia64_finish_dynamic_sections
5055 1.1 christos #define bfd_elfNN_bfd_final_link \
5056 1.1 christos elfNN_ia64_final_link
5057 1.1 christos
5058 1.1 christos #define bfd_elfNN_bfd_merge_private_bfd_data \
5059 1.1 christos elfNN_ia64_merge_private_bfd_data
5060 1.1 christos #define bfd_elfNN_bfd_set_private_flags \
5061 1.1 christos elfNN_ia64_set_private_flags
5062 1.1 christos #define bfd_elfNN_bfd_print_private_bfd_data \
5063 1.1 christos elfNN_ia64_print_private_bfd_data
5064 1.1 christos
5065 1.1 christos #define elf_backend_plt_readonly 1
5066 1.1 christos #define elf_backend_want_plt_sym 0
5067 1.1 christos #define elf_backend_plt_alignment 5
5068 1.1 christos #define elf_backend_got_header_size 0
5069 1.1 christos #define elf_backend_want_got_plt 1
5070 1.1 christos #define elf_backend_may_use_rel_p 1
5071 1.7 christos #define elf_backend_may_use_rela_p 1
5072 1.1 christos #define elf_backend_default_use_rela_p 1
5073 1.1 christos #define elf_backend_want_dynbss 0
5074 1.1 christos #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5075 1.1 christos #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5076 1.1 christos #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5077 1.1 christos #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5078 1.1 christos #define elf_backend_rela_normal 1
5079 1.1 christos #define elf_backend_dtrel_excludes_plt 1
5080 1.1 christos #define elf_backend_special_sections elfNN_ia64_special_sections
5081 1.1 christos #define elf_backend_default_execstack 0
5082 1.1 christos
5083 1.1 christos /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5084 1.1 christos SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5085 1.1 christos We don't want to flood users with so many error messages. We turn
5086 1.1 christos off the warning for now. It will be turned on later when the Intel
5087 1.1 christos compiler is fixed. */
5088 1.1 christos #define elf_backend_link_order_error_handler NULL
5089 1.3 christos
5090 1.1 christos #include "elfNN-target.h"
5091 1.1 christos
5092 1.1 christos /* HPUX-specific vectors. */
5093 1.1 christos
5094 1.1 christos #undef TARGET_LITTLE_SYM
5095 1.1 christos #undef TARGET_LITTLE_NAME
5096 1.1 christos #undef TARGET_BIG_SYM
5097 1.1 christos #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
5098 1.1 christos #undef TARGET_BIG_NAME
5099 1.1 christos #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5100 1.1 christos
5101 1.1 christos /* These are HP-UX specific functions. */
5102 1.1 christos
5103 1.1 christos #undef elf_backend_post_process_headers
5104 1.1 christos #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5105 1.1 christos
5106 1.1 christos #undef elf_backend_section_from_bfd_section
5107 1.1 christos #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5108 1.1 christos
5109 1.1 christos #undef elf_backend_symbol_processing
5110 1.1 christos #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5111 1.1 christos
5112 1.1 christos #undef elf_backend_want_p_paddr_set_to_zero
5113 1.1 christos #define elf_backend_want_p_paddr_set_to_zero 1
5114 1.1 christos
5115 #undef ELF_COMMONPAGESIZE
5116 #undef ELF_OSABI
5117 #define ELF_OSABI ELFOSABI_HPUX
5118
5119 #undef elfNN_bed
5120 #define elfNN_bed elfNN_ia64_hpux_bed
5121
5122 #include "elfNN-target.h"
5123