elfnn-ia64.c revision 1.1.1.2 1 1.1 christos /* IA-64 support for 64-bit ELF
2 1.1.1.2 christos Copyright 1998-2013 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 1.1 christos one pass. */
350 1.1 christos *again = FALSE;
351 1.1 christos
352 1.1 christos if (link_info->relocatable)
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 1.1 christos if (strcmp (sec->output_section->name, ".init") == 0
619 1.1 christos || strcmp (sec->output_section->name, ".fini") == 0)
620 1.1 christos {
621 1.1 christos (*_bfd_error_handler)
622 1.1 christos (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."),
623 1.1 christos sec->owner, sec, (unsigned long) roff);
624 1.1 christos bfd_set_error (bfd_error_bad_value);
625 1.1 christos goto error_return;
626 1.1 christos }
627 1.1 christos
628 1.1 christos /* If the branch and target are in the same section, you've
629 1.1 christos got one honking big section and we can't help you unless
630 1.1 christos you are branching backwards. You'll get an error message
631 1.1 christos later. */
632 1.1 christos if (tsec == sec && toff > roff)
633 1.1 christos continue;
634 1.1 christos
635 1.1 christos /* Look for an existing fixup to this address. */
636 1.1 christos for (f = fixups; f ; f = f->next)
637 1.1 christos if (f->tsec == tsec && f->toff == toff)
638 1.1 christos break;
639 1.1 christos
640 1.1 christos if (f == NULL)
641 1.1 christos {
642 1.1 christos /* Two alternatives: If it's a branch to a PLT entry, we can
643 1.1 christos make a copy of the FULL_PLT entry. Otherwise, we'll have
644 1.1 christos to use a `brl' insn to get where we're going. */
645 1.1 christos
646 1.1 christos size_t size;
647 1.1 christos
648 1.1 christos if (tsec == ia64_info->root.splt)
649 1.1 christos size = sizeof (plt_full_entry);
650 1.1 christos else
651 1.1 christos size = oor_branch_size;
652 1.1 christos
653 1.1 christos /* Resize the current section to make room for the new branch. */
654 1.1 christos trampoff = (sec->size + 15) & (bfd_vma) -16;
655 1.1 christos
656 1.1 christos /* If trampoline is out of range, there is nothing we
657 1.1 christos can do. */
658 1.1 christos offset = trampoff - (roff & (bfd_vma) -4);
659 1.1 christos if (offset < -0x1000000 || offset > 0x0FFFFF0)
660 1.1 christos continue;
661 1.1 christos
662 1.1 christos amt = trampoff + size;
663 1.1 christos contents = (bfd_byte *) bfd_realloc (contents, amt);
664 1.1 christos if (contents == NULL)
665 1.1 christos goto error_return;
666 1.1 christos sec->size = amt;
667 1.1 christos
668 1.1 christos if (tsec == ia64_info->root.splt)
669 1.1 christos {
670 1.1 christos memcpy (contents + trampoff, plt_full_entry, size);
671 1.1 christos
672 1.1 christos /* Hijack the old relocation for use as the PLTOFF reloc. */
673 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
674 1.1 christos R_IA64_PLTOFF22);
675 1.1 christos irel->r_offset = trampoff;
676 1.1 christos }
677 1.1 christos else
678 1.1 christos {
679 1.1 christos if (size == sizeof (oor_ip))
680 1.1 christos {
681 1.1 christos memcpy (contents + trampoff, oor_ip, size);
682 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
683 1.1 christos R_IA64_PCREL64I);
684 1.1 christos irel->r_addend -= 16;
685 1.1 christos irel->r_offset = trampoff + 2;
686 1.1 christos }
687 1.1 christos else
688 1.1 christos {
689 1.1 christos memcpy (contents + trampoff, oor_brl, size);
690 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
691 1.1 christos R_IA64_PCREL60B);
692 1.1 christos irel->r_offset = trampoff + 2;
693 1.1 christos }
694 1.1 christos
695 1.1 christos }
696 1.1 christos
697 1.1 christos /* Record the fixup so we don't do it again this section. */
698 1.1 christos f = (struct one_fixup *)
699 1.1 christos bfd_malloc ((bfd_size_type) sizeof (*f));
700 1.1 christos f->next = fixups;
701 1.1 christos f->tsec = tsec;
702 1.1 christos f->toff = toff;
703 1.1 christos f->trampoff = trampoff;
704 1.1 christos fixups = f;
705 1.1 christos }
706 1.1 christos else
707 1.1 christos {
708 1.1 christos /* If trampoline is out of range, there is nothing we
709 1.1 christos can do. */
710 1.1 christos offset = f->trampoff - (roff & (bfd_vma) -4);
711 1.1 christos if (offset < -0x1000000 || offset > 0x0FFFFF0)
712 1.1 christos continue;
713 1.1 christos
714 1.1 christos /* Nop out the reloc, since we're finalizing things here. */
715 1.1 christos irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
716 1.1 christos }
717 1.1 christos
718 1.1 christos /* Fix up the existing branch to hit the trampoline. */
719 1.1 christos if (ia64_elf_install_value (contents + roff, offset, r_type)
720 1.1 christos != bfd_reloc_ok)
721 1.1 christos goto error_return;
722 1.1 christos
723 1.1 christos changed_contents = TRUE;
724 1.1 christos changed_relocs = TRUE;
725 1.1 christos }
726 1.1 christos else
727 1.1 christos {
728 1.1 christos /* Fetch the gp. */
729 1.1 christos if (gp == 0)
730 1.1 christos {
731 1.1 christos bfd *obfd = sec->output_section->owner;
732 1.1 christos gp = _bfd_get_gp_value (obfd);
733 1.1 christos if (gp == 0)
734 1.1 christos {
735 1.1 christos if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE))
736 1.1 christos goto error_return;
737 1.1 christos gp = _bfd_get_gp_value (obfd);
738 1.1 christos }
739 1.1 christos }
740 1.1 christos
741 1.1 christos /* If the data is out of range, do nothing. */
742 1.1 christos if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
743 1.1 christos ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
744 1.1 christos continue;
745 1.1 christos
746 1.1 christos if (r_type == R_IA64_GPREL22)
747 1.1 christos elfNN_ia64_update_short_info (tsec->output_section,
748 1.1 christos tsec->output_offset + toff,
749 1.1 christos ia64_info);
750 1.1 christos else if (r_type == R_IA64_LTOFF22X)
751 1.1 christos {
752 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
753 1.1 christos R_IA64_GPREL22);
754 1.1 christos changed_relocs = TRUE;
755 1.1 christos if (dyn_i->want_gotx)
756 1.1 christos {
757 1.1 christos dyn_i->want_gotx = 0;
758 1.1 christos changed_got |= !dyn_i->want_got;
759 1.1 christos }
760 1.1 christos
761 1.1 christos elfNN_ia64_update_short_info (tsec->output_section,
762 1.1 christos tsec->output_offset + toff,
763 1.1 christos ia64_info);
764 1.1 christos }
765 1.1 christos else
766 1.1 christos {
767 1.1 christos ia64_elf_relax_ldxmov (contents, roff);
768 1.1 christos irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
769 1.1 christos changed_contents = TRUE;
770 1.1 christos changed_relocs = TRUE;
771 1.1 christos }
772 1.1 christos }
773 1.1 christos }
774 1.1 christos
775 1.1 christos /* ??? If we created fixups, this may push the code segment large
776 1.1 christos enough that the data segment moves, which will change the GP.
777 1.1 christos Reset the GP so that we re-calculate next round. We need to
778 1.1 christos do this at the _beginning_ of the next round; now will not do. */
779 1.1 christos
780 1.1 christos /* Clean up and go home. */
781 1.1 christos while (fixups)
782 1.1 christos {
783 1.1 christos struct one_fixup *f = fixups;
784 1.1 christos fixups = fixups->next;
785 1.1 christos free (f);
786 1.1 christos }
787 1.1 christos
788 1.1 christos if (isymbuf != NULL
789 1.1 christos && symtab_hdr->contents != (unsigned char *) isymbuf)
790 1.1 christos {
791 1.1 christos if (! link_info->keep_memory)
792 1.1 christos free (isymbuf);
793 1.1 christos else
794 1.1 christos {
795 1.1 christos /* Cache the symbols for elf_link_input_bfd. */
796 1.1 christos symtab_hdr->contents = (unsigned char *) isymbuf;
797 1.1 christos }
798 1.1 christos }
799 1.1 christos
800 1.1 christos if (contents != NULL
801 1.1 christos && elf_section_data (sec)->this_hdr.contents != contents)
802 1.1 christos {
803 1.1 christos if (!changed_contents && !link_info->keep_memory)
804 1.1 christos free (contents);
805 1.1 christos else
806 1.1 christos {
807 1.1 christos /* Cache the section contents for elf_link_input_bfd. */
808 1.1 christos elf_section_data (sec)->this_hdr.contents = contents;
809 1.1 christos }
810 1.1 christos }
811 1.1 christos
812 1.1 christos if (elf_section_data (sec)->relocs != internal_relocs)
813 1.1 christos {
814 1.1 christos if (!changed_relocs)
815 1.1 christos free (internal_relocs);
816 1.1 christos else
817 1.1 christos elf_section_data (sec)->relocs = internal_relocs;
818 1.1 christos }
819 1.1 christos
820 1.1 christos if (changed_got)
821 1.1 christos {
822 1.1 christos struct elfNN_ia64_allocate_data data;
823 1.1 christos data.info = link_info;
824 1.1 christos data.ofs = 0;
825 1.1 christos ia64_info->self_dtpmod_offset = (bfd_vma) -1;
826 1.1 christos
827 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
828 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
829 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
830 1.1 christos ia64_info->root.sgot->size = data.ofs;
831 1.1 christos
832 1.1 christos if (ia64_info->root.dynamic_sections_created
833 1.1 christos && ia64_info->root.srelgot != NULL)
834 1.1 christos {
835 1.1 christos /* Resize .rela.got. */
836 1.1 christos ia64_info->root.srelgot->size = 0;
837 1.1 christos if (link_info->shared
838 1.1 christos && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
839 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
840 1.1 christos data.only_got = TRUE;
841 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries,
842 1.1 christos &data);
843 1.1 christos }
844 1.1 christos }
845 1.1 christos
846 1.1 christos if (link_info->relax_pass == 0)
847 1.1 christos {
848 1.1 christos /* Pass 0 is only needed to relax br. */
849 1.1 christos sec->skip_relax_pass_0 = skip_relax_pass_0;
850 1.1 christos sec->skip_relax_pass_1 = skip_relax_pass_1;
851 1.1 christos }
852 1.1 christos
853 1.1 christos *again = changed_contents || changed_relocs;
854 1.1 christos return TRUE;
855 1.1 christos
856 1.1 christos error_return:
857 1.1 christos if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
858 1.1 christos free (isymbuf);
859 1.1 christos if (contents != NULL
860 1.1 christos && elf_section_data (sec)->this_hdr.contents != contents)
861 1.1 christos free (contents);
862 1.1 christos if (internal_relocs != NULL
863 1.1 christos && elf_section_data (sec)->relocs != internal_relocs)
864 1.1 christos free (internal_relocs);
865 1.1 christos return FALSE;
866 1.1 christos }
867 1.1 christos #undef skip_relax_pass_0
868 1.1 christos #undef skip_relax_pass_1
869 1.1 christos
870 1.1 christos /* Return TRUE if NAME is an unwind table section name. */
872 1.1 christos
873 1.1 christos static inline bfd_boolean
874 1.1 christos is_unwind_section_name (bfd *abfd, const char *name)
875 1.1 christos {
876 1.1 christos if (elfNN_ia64_hpux_vec (abfd->xvec)
877 1.1 christos && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
878 1.1 christos return FALSE;
879 1.1 christos
880 1.1 christos return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind)
881 1.1 christos && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info))
882 1.1 christos || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once));
883 1.1 christos }
884 1.1 christos
885 1.1 christos /* Handle an IA-64 specific section when reading an object file. This
886 1.1 christos is called when bfd_section_from_shdr finds a section with an unknown
887 1.1 christos type. */
888 1.1 christos
889 1.1 christos static bfd_boolean
890 1.1 christos elfNN_ia64_section_from_shdr (bfd *abfd,
891 1.1 christos Elf_Internal_Shdr *hdr,
892 1.1 christos const char *name,
893 1.1 christos int shindex)
894 1.1 christos {
895 1.1 christos /* There ought to be a place to keep ELF backend specific flags, but
896 1.1 christos at the moment there isn't one. We just keep track of the
897 1.1 christos sections by their name, instead. Fortunately, the ABI gives
898 1.1 christos suggested names for all the MIPS specific sections, so we will
899 1.1 christos probably get away with this. */
900 1.1 christos switch (hdr->sh_type)
901 1.1 christos {
902 1.1 christos case SHT_IA_64_UNWIND:
903 1.1 christos case SHT_IA_64_HP_OPT_ANOT:
904 1.1 christos break;
905 1.1 christos
906 1.1 christos case SHT_IA_64_EXT:
907 1.1 christos if (strcmp (name, ELF_STRING_ia64_archext) != 0)
908 1.1 christos return FALSE;
909 1.1 christos break;
910 1.1 christos
911 1.1 christos default:
912 1.1 christos return FALSE;
913 1.1 christos }
914 1.1 christos
915 1.1 christos if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
916 1.1 christos return FALSE;
917 1.1 christos
918 1.1 christos return TRUE;
919 1.1 christos }
920 1.1 christos
921 1.1 christos /* Convert IA-64 specific section flags to bfd internal section flags. */
922 1.1 christos
923 1.1 christos /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
924 1.1 christos flag. */
925 1.1 christos
926 1.1 christos static bfd_boolean
927 1.1 christos elfNN_ia64_section_flags (flagword *flags,
928 1.1 christos const Elf_Internal_Shdr *hdr)
929 1.1 christos {
930 1.1 christos if (hdr->sh_flags & SHF_IA_64_SHORT)
931 1.1 christos *flags |= SEC_SMALL_DATA;
932 1.1 christos
933 1.1 christos return TRUE;
934 1.1 christos }
935 1.1 christos
936 1.1 christos /* Set the correct type for an IA-64 ELF section. We do this by the
937 1.1 christos section name, which is a hack, but ought to work. */
938 1.1 christos
939 1.1 christos static bfd_boolean
940 1.1 christos elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr,
941 1.1 christos asection *sec)
942 1.1 christos {
943 1.1 christos const char *name;
944 1.1 christos
945 1.1 christos name = bfd_get_section_name (abfd, sec);
946 1.1 christos
947 1.1 christos if (is_unwind_section_name (abfd, name))
948 1.1 christos {
949 1.1 christos /* We don't have the sections numbered at this point, so sh_info
950 1.1 christos is set later, in elfNN_ia64_final_write_processing. */
951 1.1 christos hdr->sh_type = SHT_IA_64_UNWIND;
952 1.1 christos hdr->sh_flags |= SHF_LINK_ORDER;
953 1.1 christos }
954 1.1 christos else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
955 1.1 christos hdr->sh_type = SHT_IA_64_EXT;
956 1.1 christos else if (strcmp (name, ".HP.opt_annot") == 0)
957 1.1 christos hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
958 1.1 christos else if (strcmp (name, ".reloc") == 0)
959 1.1 christos /* This is an ugly, but unfortunately necessary hack that is
960 1.1 christos needed when producing EFI binaries on IA-64. It tells
961 1.1 christos elf.c:elf_fake_sections() not to consider ".reloc" as a section
962 1.1 christos containing ELF relocation info. We need this hack in order to
963 1.1 christos be able to generate ELF binaries that can be translated into
964 1.1 christos EFI applications (which are essentially COFF objects). Those
965 1.1 christos files contain a COFF ".reloc" section inside an ELFNN object,
966 1.1 christos which would normally cause BFD to segfault because it would
967 1.1 christos attempt to interpret this section as containing relocation
968 1.1 christos entries for section "oc". With this hack enabled, ".reloc"
969 1.1 christos will be treated as a normal data section, which will avoid the
970 1.1 christos segfault. However, you won't be able to create an ELFNN binary
971 1.1 christos with a section named "oc" that needs relocations, but that's
972 1.1 christos the kind of ugly side-effects you get when detecting section
973 1.1 christos types based on their names... In practice, this limitation is
974 1.1 christos unlikely to bite. */
975 1.1 christos hdr->sh_type = SHT_PROGBITS;
976 1.1 christos
977 1.1 christos if (sec->flags & SEC_SMALL_DATA)
978 1.1 christos hdr->sh_flags |= SHF_IA_64_SHORT;
979 1.1 christos
980 1.1 christos /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
981 1.1 christos
982 1.1 christos if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS))
983 1.1 christos hdr->sh_flags |= SHF_IA_64_HP_TLS;
984 1.1 christos
985 1.1 christos return TRUE;
986 1.1 christos }
987 1.1 christos
988 1.1 christos /* The final processing done just before writing out an IA-64 ELF
989 1.1 christos object file. */
990 1.1 christos
991 1.1 christos static void
992 1.1 christos elfNN_ia64_final_write_processing (bfd *abfd,
993 1.1 christos bfd_boolean linker ATTRIBUTE_UNUSED)
994 1.1 christos {
995 1.1 christos Elf_Internal_Shdr *hdr;
996 1.1 christos asection *s;
997 1.1 christos
998 1.1 christos for (s = abfd->sections; s; s = s->next)
999 1.1 christos {
1000 1.1 christos hdr = &elf_section_data (s)->this_hdr;
1001 1.1 christos switch (hdr->sh_type)
1002 1.1 christos {
1003 1.1 christos case SHT_IA_64_UNWIND:
1004 1.1 christos /* The IA-64 processor-specific ABI requires setting sh_link
1005 1.1 christos to the unwind section, whereas HP-UX requires sh_info to
1006 1.1 christos do so. For maximum compatibility, we'll set both for
1007 1.1 christos now... */
1008 1.1 christos hdr->sh_info = hdr->sh_link;
1009 1.1 christos break;
1010 1.1 christos }
1011 1.1 christos }
1012 1.1 christos
1013 1.1 christos if (! elf_flags_init (abfd))
1014 1.1 christos {
1015 1.1 christos unsigned long flags = 0;
1016 1.1 christos
1017 1.1 christos if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1018 1.1 christos flags |= EF_IA_64_BE;
1019 1.1 christos if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1020 1.1 christos flags |= EF_IA_64_ABI64;
1021 1.1 christos
1022 1.1 christos elf_elfheader(abfd)->e_flags = flags;
1023 1.1 christos elf_flags_init (abfd) = TRUE;
1024 1.1 christos }
1025 1.1 christos }
1026 1.1 christos
1027 1.1 christos /* Hook called by the linker routine which adds symbols from an object
1028 1.1 christos file. We use it to put .comm items in .sbss, and not .bss. */
1029 1.1 christos
1030 1.1 christos static bfd_boolean
1031 1.1 christos elfNN_ia64_add_symbol_hook (bfd *abfd,
1032 1.1 christos struct bfd_link_info *info,
1033 1.1 christos Elf_Internal_Sym *sym,
1034 1.1 christos const char **namep ATTRIBUTE_UNUSED,
1035 1.1 christos flagword *flagsp ATTRIBUTE_UNUSED,
1036 1.1 christos asection **secp,
1037 1.1 christos bfd_vma *valp)
1038 1.1 christos {
1039 1.1 christos if (sym->st_shndx == SHN_COMMON
1040 1.1 christos && !info->relocatable
1041 1.1 christos && sym->st_size <= elf_gp_size (abfd))
1042 1.1 christos {
1043 1.1 christos /* Common symbols less than or equal to -G nn bytes are
1044 1.1 christos automatically put into .sbss. */
1045 1.1 christos
1046 1.1 christos asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1047 1.1 christos
1048 1.1 christos if (scomm == NULL)
1049 1.1 christos {
1050 1.1 christos scomm = bfd_make_section_with_flags (abfd, ".scommon",
1051 1.1 christos (SEC_ALLOC
1052 1.1 christos | SEC_IS_COMMON
1053 1.1 christos | SEC_LINKER_CREATED));
1054 1.1 christos if (scomm == NULL)
1055 1.1 christos return FALSE;
1056 1.1 christos }
1057 1.1 christos
1058 1.1 christos *secp = scomm;
1059 1.1 christos *valp = sym->st_size;
1060 1.1 christos }
1061 1.1 christos
1062 1.1 christos return TRUE;
1063 1.1 christos }
1064 1.1 christos
1065 1.1 christos /* Return the number of additional phdrs we will need. */
1066 1.1 christos
1067 1.1 christos static int
1068 1.1 christos elfNN_ia64_additional_program_headers (bfd *abfd,
1069 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
1070 1.1 christos {
1071 1.1 christos asection *s;
1072 1.1 christos int ret = 0;
1073 1.1 christos
1074 1.1 christos /* See if we need a PT_IA_64_ARCHEXT segment. */
1075 1.1 christos s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1076 1.1 christos if (s && (s->flags & SEC_LOAD))
1077 1.1 christos ++ret;
1078 1.1 christos
1079 1.1 christos /* Count how many PT_IA_64_UNWIND segments we need. */
1080 1.1 christos for (s = abfd->sections; s; s = s->next)
1081 1.1 christos if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1082 1.1 christos ++ret;
1083 1.1 christos
1084 1.1 christos return ret;
1085 1.1 christos }
1086 1.1 christos
1087 1.1 christos static bfd_boolean
1088 1.1 christos elfNN_ia64_modify_segment_map (bfd *abfd,
1089 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
1090 1.1 christos {
1091 1.1 christos struct elf_segment_map *m, **pm;
1092 1.1 christos Elf_Internal_Shdr *hdr;
1093 1.1 christos asection *s;
1094 1.1 christos
1095 1.1 christos /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1096 1.1 christos all PT_LOAD segments. */
1097 1.1 christos s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1098 1.1 christos if (s && (s->flags & SEC_LOAD))
1099 1.1 christos {
1100 1.1 christos for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1101 1.1 christos if (m->p_type == PT_IA_64_ARCHEXT)
1102 1.1 christos break;
1103 1.1 christos if (m == NULL)
1104 1.1 christos {
1105 1.1 christos m = ((struct elf_segment_map *)
1106 1.1 christos bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1107 1.1 christos if (m == NULL)
1108 1.1 christos return FALSE;
1109 1.1 christos
1110 1.1 christos m->p_type = PT_IA_64_ARCHEXT;
1111 1.1 christos m->count = 1;
1112 1.1 christos m->sections[0] = s;
1113 1.1 christos
1114 1.1 christos /* We want to put it after the PHDR and INTERP segments. */
1115 1.1 christos pm = &elf_seg_map (abfd);
1116 1.1 christos while (*pm != NULL
1117 1.1 christos && ((*pm)->p_type == PT_PHDR
1118 1.1 christos || (*pm)->p_type == PT_INTERP))
1119 1.1 christos pm = &(*pm)->next;
1120 1.1 christos
1121 1.1 christos m->next = *pm;
1122 1.1 christos *pm = m;
1123 1.1 christos }
1124 1.1 christos }
1125 1.1 christos
1126 1.1 christos /* Install PT_IA_64_UNWIND segments, if needed. */
1127 1.1 christos for (s = abfd->sections; s; s = s->next)
1128 1.1 christos {
1129 1.1 christos hdr = &elf_section_data (s)->this_hdr;
1130 1.1 christos if (hdr->sh_type != SHT_IA_64_UNWIND)
1131 1.1 christos continue;
1132 1.1 christos
1133 1.1 christos if (s && (s->flags & SEC_LOAD))
1134 1.1 christos {
1135 1.1 christos for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1136 1.1 christos if (m->p_type == PT_IA_64_UNWIND)
1137 1.1 christos {
1138 1.1 christos int i;
1139 1.1 christos
1140 1.1 christos /* Look through all sections in the unwind segment
1141 1.1 christos for a match since there may be multiple sections
1142 1.1 christos to a segment. */
1143 1.1 christos for (i = m->count - 1; i >= 0; --i)
1144 1.1 christos if (m->sections[i] == s)
1145 1.1 christos break;
1146 1.1 christos
1147 1.1 christos if (i >= 0)
1148 1.1 christos break;
1149 1.1 christos }
1150 1.1 christos
1151 1.1 christos if (m == NULL)
1152 1.1 christos {
1153 1.1 christos m = ((struct elf_segment_map *)
1154 1.1 christos bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1155 1.1 christos if (m == NULL)
1156 1.1 christos return FALSE;
1157 1.1 christos
1158 1.1 christos m->p_type = PT_IA_64_UNWIND;
1159 1.1 christos m->count = 1;
1160 1.1 christos m->sections[0] = s;
1161 1.1 christos m->next = NULL;
1162 1.1 christos
1163 1.1 christos /* We want to put it last. */
1164 1.1 christos pm = &elf_seg_map (abfd);
1165 1.1 christos while (*pm != NULL)
1166 1.1 christos pm = &(*pm)->next;
1167 1.1 christos *pm = m;
1168 1.1 christos }
1169 1.1 christos }
1170 1.1 christos }
1171 1.1 christos
1172 1.1 christos return TRUE;
1173 1.1 christos }
1174 1.1 christos
1175 1.1 christos /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1176 1.1 christos the input sections for each output section in the segment and testing
1177 1.1 christos for SHF_IA_64_NORECOV on each. */
1178 1.1 christos
1179 1.1 christos static bfd_boolean
1180 1.1 christos elfNN_ia64_modify_program_headers (bfd *abfd,
1181 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
1182 1.1 christos {
1183 1.1 christos struct elf_obj_tdata *tdata = elf_tdata (abfd);
1184 1.1 christos struct elf_segment_map *m;
1185 1.1 christos Elf_Internal_Phdr *p;
1186 1.1 christos
1187 1.1 christos for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++)
1188 1.1 christos if (m->p_type == PT_LOAD)
1189 1.1 christos {
1190 1.1 christos int i;
1191 1.1 christos for (i = m->count - 1; i >= 0; --i)
1192 1.1 christos {
1193 1.1 christos struct bfd_link_order *order = m->sections[i]->map_head.link_order;
1194 1.1 christos
1195 1.1 christos while (order != NULL)
1196 1.1 christos {
1197 1.1 christos if (order->type == bfd_indirect_link_order)
1198 1.1 christos {
1199 1.1 christos asection *is = order->u.indirect.section;
1200 1.1 christos bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1201 1.1 christos if (flags & SHF_IA_64_NORECOV)
1202 1.1 christos {
1203 1.1 christos p->p_flags |= PF_IA_64_NORECOV;
1204 1.1 christos goto found;
1205 1.1 christos }
1206 1.1 christos }
1207 1.1 christos order = order->next;
1208 1.1 christos }
1209 1.1 christos }
1210 1.1 christos found:;
1211 1.1 christos }
1212 1.1 christos
1213 1.1 christos return TRUE;
1214 1.1 christos }
1215 1.1 christos
1216 1.1 christos /* According to the Tahoe assembler spec, all labels starting with a
1217 1.1 christos '.' are local. */
1218 1.1 christos
1219 1.1 christos static bfd_boolean
1220 1.1 christos elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
1221 1.1 christos const char *name)
1222 1.1 christos {
1223 1.1 christos return name[0] == '.';
1224 1.1 christos }
1225 1.1 christos
1226 1.1 christos /* Should we do dynamic things to this symbol? */
1227 1.1 christos
1228 1.1 christos static bfd_boolean
1229 1.1 christos elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h,
1230 1.1 christos struct bfd_link_info *info, int r_type)
1231 1.1 christos {
1232 1.1 christos bfd_boolean ignore_protected
1233 1.1 christos = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1234 1.1 christos || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1235 1.1 christos
1236 1.1 christos return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1237 1.1 christos }
1238 1.1 christos
1239 1.1 christos static struct bfd_hash_entry*
1241 1.1 christos elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry,
1242 1.1 christos struct bfd_hash_table *table,
1243 1.1 christos const char *string)
1244 1.1 christos {
1245 1.1 christos struct elfNN_ia64_link_hash_entry *ret;
1246 1.1 christos ret = (struct elfNN_ia64_link_hash_entry *) entry;
1247 1.1 christos
1248 1.1 christos /* Allocate the structure if it has not already been allocated by a
1249 1.1 christos subclass. */
1250 1.1 christos if (!ret)
1251 1.1 christos ret = bfd_hash_allocate (table, sizeof (*ret));
1252 1.1 christos
1253 1.1 christos if (!ret)
1254 1.1 christos return 0;
1255 1.1 christos
1256 1.1 christos /* Call the allocation method of the superclass. */
1257 1.1 christos ret = ((struct elfNN_ia64_link_hash_entry *)
1258 1.1 christos _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1259 1.1 christos table, string));
1260 1.1 christos
1261 1.1 christos ret->info = NULL;
1262 1.1 christos ret->count = 0;
1263 1.1 christos ret->sorted_count = 0;
1264 1.1 christos ret->size = 0;
1265 1.1 christos return (struct bfd_hash_entry *) ret;
1266 1.1 christos }
1267 1.1 christos
1268 1.1 christos static void
1269 1.1 christos elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info,
1270 1.1 christos struct elf_link_hash_entry *xdir,
1271 1.1 christos struct elf_link_hash_entry *xind)
1272 1.1 christos {
1273 1.1 christos struct elfNN_ia64_link_hash_entry *dir, *ind;
1274 1.1 christos
1275 1.1 christos dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1276 1.1 christos ind = (struct elfNN_ia64_link_hash_entry *) xind;
1277 1.1 christos
1278 1.1 christos /* Copy down any references that we may have already seen to the
1279 1.1 christos symbol which just became indirect. */
1280 1.1 christos
1281 1.1 christos dir->root.ref_dynamic |= ind->root.ref_dynamic;
1282 1.1 christos dir->root.ref_regular |= ind->root.ref_regular;
1283 1.1 christos dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1284 1.1 christos dir->root.needs_plt |= ind->root.needs_plt;
1285 1.1 christos
1286 1.1 christos if (ind->root.root.type != bfd_link_hash_indirect)
1287 1.1 christos return;
1288 1.1 christos
1289 1.1 christos /* Copy over the got and plt data. This would have been done
1290 1.1 christos by check_relocs. */
1291 1.1 christos
1292 1.1 christos if (ind->info != NULL)
1293 1.1 christos {
1294 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1295 1.1 christos unsigned int count;
1296 1.1 christos
1297 1.1 christos if (dir->info)
1298 1.1 christos free (dir->info);
1299 1.1 christos
1300 1.1 christos dir->info = ind->info;
1301 1.1 christos dir->count = ind->count;
1302 1.1 christos dir->sorted_count = ind->sorted_count;
1303 1.1 christos dir->size = ind->size;
1304 1.1 christos
1305 1.1 christos ind->info = NULL;
1306 1.1 christos ind->count = 0;
1307 1.1 christos ind->sorted_count = 0;
1308 1.1 christos ind->size = 0;
1309 1.1 christos
1310 1.1 christos /* Fix up the dyn_sym_info pointers to the global symbol. */
1311 1.1 christos for (count = dir->count, dyn_i = dir->info;
1312 1.1 christos count != 0;
1313 1.1 christos count--, dyn_i++)
1314 1.1 christos dyn_i->h = &dir->root;
1315 1.1 christos }
1316 1.1 christos
1317 1.1 christos /* Copy over the dynindx. */
1318 1.1 christos
1319 1.1 christos if (ind->root.dynindx != -1)
1320 1.1 christos {
1321 1.1 christos if (dir->root.dynindx != -1)
1322 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1323 1.1 christos dir->root.dynstr_index);
1324 1.1 christos dir->root.dynindx = ind->root.dynindx;
1325 1.1 christos dir->root.dynstr_index = ind->root.dynstr_index;
1326 1.1 christos ind->root.dynindx = -1;
1327 1.1 christos ind->root.dynstr_index = 0;
1328 1.1 christos }
1329 1.1 christos }
1330 1.1 christos
1331 1.1 christos static void
1332 1.1 christos elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info,
1333 1.1 christos struct elf_link_hash_entry *xh,
1334 1.1 christos bfd_boolean force_local)
1335 1.1 christos {
1336 1.1 christos struct elfNN_ia64_link_hash_entry *h;
1337 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1338 1.1 christos unsigned int count;
1339 1.1 christos
1340 1.1 christos h = (struct elfNN_ia64_link_hash_entry *)xh;
1341 1.1 christos
1342 1.1 christos _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1343 1.1 christos
1344 1.1 christos for (count = h->count, dyn_i = h->info;
1345 1.1 christos count != 0;
1346 1.1 christos count--, dyn_i++)
1347 1.1 christos {
1348 1.1 christos dyn_i->want_plt2 = 0;
1349 1.1 christos dyn_i->want_plt = 0;
1350 1.1 christos }
1351 1.1 christos }
1352 1.1 christos
1353 1.1 christos /* Compute a hash of a local hash entry. */
1354 1.1 christos
1355 1.1 christos static hashval_t
1356 1.1 christos elfNN_ia64_local_htab_hash (const void *ptr)
1357 1.1 christos {
1358 1.1 christos struct elfNN_ia64_local_hash_entry *entry
1359 1.1 christos = (struct elfNN_ia64_local_hash_entry *) ptr;
1360 1.1 christos
1361 1.1 christos return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym);
1362 1.1 christos }
1363 1.1 christos
1364 1.1 christos /* Compare local hash entries. */
1365 1.1 christos
1366 1.1 christos static int
1367 1.1 christos elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2)
1368 1.1 christos {
1369 1.1 christos struct elfNN_ia64_local_hash_entry *entry1
1370 1.1 christos = (struct elfNN_ia64_local_hash_entry *) ptr1;
1371 1.1 christos struct elfNN_ia64_local_hash_entry *entry2
1372 1.1 christos = (struct elfNN_ia64_local_hash_entry *) ptr2;
1373 1.1 christos
1374 1.1 christos return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1375 1.1 christos }
1376 1.1 christos
1377 1.1 christos /* Create the derived linker hash table. The IA-64 ELF port uses this
1378 1.1 christos derived hash table to keep information specific to the IA-64 ElF
1379 1.1 christos linker (without using static variables). */
1380 1.1 christos
1381 1.1 christos static struct bfd_link_hash_table *
1382 1.1 christos elfNN_ia64_hash_table_create (bfd *abfd)
1383 1.1 christos {
1384 1.1 christos struct elfNN_ia64_link_hash_table *ret;
1385 1.1 christos
1386 1.1 christos ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1387 1.1 christos if (!ret)
1388 1.1 christos return NULL;
1389 1.1 christos
1390 1.1 christos if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1391 1.1 christos elfNN_ia64_new_elf_hash_entry,
1392 1.1 christos sizeof (struct elfNN_ia64_link_hash_entry),
1393 1.1 christos IA64_ELF_DATA))
1394 1.1 christos {
1395 1.1 christos free (ret);
1396 1.1 christos return NULL;
1397 1.1 christos }
1398 1.1 christos
1399 1.1 christos ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1400 1.1 christos elfNN_ia64_local_htab_eq, NULL);
1401 1.1 christos ret->loc_hash_memory = objalloc_create ();
1402 1.1 christos if (!ret->loc_hash_table || !ret->loc_hash_memory)
1403 1.1 christos {
1404 1.1 christos free (ret);
1405 1.1 christos return NULL;
1406 1.1 christos }
1407 1.1 christos
1408 1.1 christos return &ret->root.root;
1409 1.1 christos }
1410 1.1 christos
1411 1.1 christos /* Free the global elfNN_ia64_dyn_sym_info array. */
1412 1.1 christos
1413 1.1 christos static bfd_boolean
1414 1.1 christos elfNN_ia64_global_dyn_info_free (void **xentry,
1415 1.1 christos void * unused ATTRIBUTE_UNUSED)
1416 1.1 christos {
1417 1.1 christos struct elfNN_ia64_link_hash_entry *entry
1418 1.1 christos = (struct elfNN_ia64_link_hash_entry *) xentry;
1419 1.1 christos
1420 1.1 christos if (entry->info)
1421 1.1 christos {
1422 1.1 christos free (entry->info);
1423 1.1 christos entry->info = NULL;
1424 1.1 christos entry->count = 0;
1425 1.1 christos entry->sorted_count = 0;
1426 1.1 christos entry->size = 0;
1427 1.1 christos }
1428 1.1 christos
1429 1.1 christos return TRUE;
1430 1.1 christos }
1431 1.1 christos
1432 1.1 christos /* Free the local elfNN_ia64_dyn_sym_info array. */
1433 1.1 christos
1434 1.1 christos static bfd_boolean
1435 1.1 christos elfNN_ia64_local_dyn_info_free (void **slot,
1436 1.1 christos void * unused ATTRIBUTE_UNUSED)
1437 1.1 christos {
1438 1.1 christos struct elfNN_ia64_local_hash_entry *entry
1439 1.1 christos = (struct elfNN_ia64_local_hash_entry *) *slot;
1440 1.1 christos
1441 1.1 christos if (entry->info)
1442 1.1 christos {
1443 1.1 christos free (entry->info);
1444 1.1 christos entry->info = NULL;
1445 1.1 christos entry->count = 0;
1446 1.1 christos entry->sorted_count = 0;
1447 1.1 christos entry->size = 0;
1448 1.1 christos }
1449 1.1 christos
1450 1.1 christos return TRUE;
1451 1.1 christos }
1452 1.1 christos
1453 1.1 christos /* Destroy IA-64 linker hash table. */
1454 1.1 christos
1455 1.1 christos static void
1456 1.1 christos elfNN_ia64_hash_table_free (struct bfd_link_hash_table *hash)
1457 1.1 christos {
1458 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info
1459 1.1 christos = (struct elfNN_ia64_link_hash_table *) hash;
1460 1.1 christos if (ia64_info->loc_hash_table)
1461 1.1 christos {
1462 1.1 christos htab_traverse (ia64_info->loc_hash_table,
1463 1.1 christos elfNN_ia64_local_dyn_info_free, NULL);
1464 1.1 christos htab_delete (ia64_info->loc_hash_table);
1465 1.1 christos }
1466 1.1 christos if (ia64_info->loc_hash_memory)
1467 1.1 christos objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1468 1.1 christos elf_link_hash_traverse (&ia64_info->root,
1469 1.1 christos elfNN_ia64_global_dyn_info_free, NULL);
1470 1.1 christos _bfd_elf_link_hash_table_free (hash);
1471 1.1 christos }
1472 1.1 christos
1473 1.1 christos /* Traverse both local and global hash tables. */
1474 1.1 christos
1475 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data
1476 1.1 christos {
1477 1.1 christos bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *);
1478 1.1 christos void * data;
1479 1.1 christos };
1480 1.1 christos
1481 1.1 christos static bfd_boolean
1482 1.1 christos elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry,
1483 1.1 christos void * xdata)
1484 1.1 christos {
1485 1.1 christos struct elfNN_ia64_link_hash_entry *entry
1486 1.1 christos = (struct elfNN_ia64_link_hash_entry *) xentry;
1487 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data *data
1488 1.1 christos = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1489 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1490 1.1 christos unsigned int count;
1491 1.1 christos
1492 1.1 christos for (count = entry->count, dyn_i = entry->info;
1493 1.1 christos count != 0;
1494 1.1 christos count--, dyn_i++)
1495 1.1 christos if (! (*data->func) (dyn_i, data->data))
1496 1.1 christos return FALSE;
1497 1.1 christos return TRUE;
1498 1.1 christos }
1499 1.1 christos
1500 1.1 christos static bfd_boolean
1501 1.1 christos elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata)
1502 1.1 christos {
1503 1.1 christos struct elfNN_ia64_local_hash_entry *entry
1504 1.1 christos = (struct elfNN_ia64_local_hash_entry *) *slot;
1505 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data *data
1506 1.1 christos = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1507 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1508 1.1 christos unsigned int count;
1509 1.1 christos
1510 1.1 christos for (count = entry->count, dyn_i = entry->info;
1511 1.1 christos count != 0;
1512 1.1 christos count--, dyn_i++)
1513 1.1 christos if (! (*data->func) (dyn_i, data->data))
1514 1.1 christos return FALSE;
1515 1.1 christos return TRUE;
1516 1.1 christos }
1517 1.1 christos
1518 1.1 christos static void
1519 1.1 christos elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info,
1520 1.1 christos bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
1521 1.1 christos void * data)
1522 1.1 christos {
1523 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data xdata;
1524 1.1 christos
1525 1.1 christos xdata.func = func;
1526 1.1 christos xdata.data = data;
1527 1.1 christos
1528 1.1 christos elf_link_hash_traverse (&ia64_info->root,
1529 1.1 christos elfNN_ia64_global_dyn_sym_thunk, &xdata);
1530 1.1 christos htab_traverse (ia64_info->loc_hash_table,
1531 1.1 christos elfNN_ia64_local_dyn_sym_thunk, &xdata);
1532 1.1 christos }
1533 1.1 christos
1534 1.1 christos static bfd_boolean
1536 1.1 christos elfNN_ia64_create_dynamic_sections (bfd *abfd,
1537 1.1 christos struct bfd_link_info *info)
1538 1.1 christos {
1539 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
1540 1.1 christos asection *s;
1541 1.1 christos
1542 1.1 christos if (! _bfd_elf_create_dynamic_sections (abfd, info))
1543 1.1 christos return FALSE;
1544 1.1 christos
1545 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
1546 1.1 christos if (ia64_info == NULL)
1547 1.1 christos return FALSE;
1548 1.1.1.2 christos
1549 1.1.1.2 christos {
1550 1.1 christos flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot);
1551 1.1 christos bfd_set_section_flags (abfd, ia64_info->root.sgot,
1552 1.1 christos SEC_SMALL_DATA | flags);
1553 1.1 christos /* The .got section is always aligned at 8 bytes. */
1554 1.1 christos if (! bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3))
1555 1.1 christos return FALSE;
1556 1.1 christos }
1557 1.1 christos
1558 1.1 christos if (!get_pltoff (abfd, info, ia64_info))
1559 1.1 christos return FALSE;
1560 1.1 christos
1561 1.1 christos s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff",
1562 1.1 christos (SEC_ALLOC | SEC_LOAD
1563 1.1 christos | SEC_HAS_CONTENTS
1564 1.1 christos | SEC_IN_MEMORY
1565 1.1 christos | SEC_LINKER_CREATED
1566 1.1 christos | SEC_READONLY));
1567 1.1 christos if (s == NULL
1568 1.1 christos || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN))
1569 1.1 christos return FALSE;
1570 1.1 christos ia64_info->rel_pltoff_sec = s;
1571 1.1 christos
1572 1.1 christos return TRUE;
1573 1.1 christos }
1574 1.1 christos
1575 1.1 christos /* Find and/or create a hash entry for local symbol. */
1576 1.1 christos static struct elfNN_ia64_local_hash_entry *
1577 1.1 christos get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info,
1578 1.1 christos bfd *abfd, const Elf_Internal_Rela *rel,
1579 1.1 christos bfd_boolean create)
1580 1.1 christos {
1581 1.1 christos struct elfNN_ia64_local_hash_entry e, *ret;
1582 1.1 christos asection *sec = abfd->sections;
1583 1.1 christos hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
1584 1.1 christos ELFNN_R_SYM (rel->r_info));
1585 1.1 christos void **slot;
1586 1.1 christos
1587 1.1 christos e.id = sec->id;
1588 1.1 christos e.r_sym = ELFNN_R_SYM (rel->r_info);
1589 1.1 christos slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
1590 1.1 christos create ? INSERT : NO_INSERT);
1591 1.1 christos
1592 1.1 christos if (!slot)
1593 1.1 christos return NULL;
1594 1.1 christos
1595 1.1 christos if (*slot)
1596 1.1 christos return (struct elfNN_ia64_local_hash_entry *) *slot;
1597 1.1 christos
1598 1.1 christos ret = (struct elfNN_ia64_local_hash_entry *)
1599 1.1 christos objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
1600 1.1 christos sizeof (struct elfNN_ia64_local_hash_entry));
1601 1.1 christos if (ret)
1602 1.1 christos {
1603 1.1 christos memset (ret, 0, sizeof (*ret));
1604 1.1 christos ret->id = sec->id;
1605 1.1 christos ret->r_sym = ELFNN_R_SYM (rel->r_info);
1606 1.1 christos *slot = ret;
1607 1.1 christos }
1608 1.1 christos return ret;
1609 1.1 christos }
1610 1.1 christos
1611 1.1 christos /* Used to sort elfNN_ia64_dyn_sym_info array. */
1612 1.1 christos
1613 1.1 christos static int
1614 1.1 christos addend_compare (const void *xp, const void *yp)
1615 1.1 christos {
1616 1.1 christos const struct elfNN_ia64_dyn_sym_info *x
1617 1.1 christos = (const struct elfNN_ia64_dyn_sym_info *) xp;
1618 1.1 christos const struct elfNN_ia64_dyn_sym_info *y
1619 1.1 christos = (const struct elfNN_ia64_dyn_sym_info *) yp;
1620 1.1 christos
1621 1.1 christos return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0;
1622 1.1 christos }
1623 1.1 christos
1624 1.1 christos /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
1625 1.1 christos
1626 1.1 christos static unsigned int
1627 1.1 christos sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info,
1628 1.1 christos unsigned int count)
1629 1.1 christos {
1630 1.1 christos bfd_vma curr, prev, got_offset;
1631 1.1 christos unsigned int i, kept, dupes, diff, dest, src, len;
1632 1.1 christos
1633 1.1 christos qsort (info, count, sizeof (*info), addend_compare);
1634 1.1 christos
1635 1.1 christos /* Find the first duplicate. */
1636 1.1 christos prev = info [0].addend;
1637 1.1 christos got_offset = info [0].got_offset;
1638 1.1 christos for (i = 1; i < count; i++)
1639 1.1 christos {
1640 1.1 christos curr = info [i].addend;
1641 1.1 christos if (curr == prev)
1642 1.1 christos {
1643 1.1 christos /* For duplicates, make sure that GOT_OFFSET is valid. */
1644 1.1 christos if (got_offset == (bfd_vma) -1)
1645 1.1 christos got_offset = info [i].got_offset;
1646 1.1 christos break;
1647 1.1 christos }
1648 1.1 christos got_offset = info [i].got_offset;
1649 1.1 christos prev = curr;
1650 1.1 christos }
1651 1.1 christos
1652 1.1 christos /* We may move a block of elements to here. */
1653 1.1 christos dest = i++;
1654 1.1 christos
1655 1.1 christos /* Remove duplicates. */
1656 1.1 christos if (i < count)
1657 1.1 christos {
1658 1.1 christos while (i < count)
1659 1.1 christos {
1660 1.1 christos /* For duplicates, make sure that the kept one has a valid
1661 1.1 christos got_offset. */
1662 1.1 christos kept = dest - 1;
1663 1.1 christos if (got_offset != (bfd_vma) -1)
1664 1.1 christos info [kept].got_offset = got_offset;
1665 1.1 christos
1666 1.1 christos curr = info [i].addend;
1667 1.1 christos got_offset = info [i].got_offset;
1668 1.1 christos
1669 1.1 christos /* Move a block of elements whose first one is different from
1670 1.1 christos the previous. */
1671 1.1 christos if (curr == prev)
1672 1.1 christos {
1673 1.1 christos for (src = i + 1; src < count; src++)
1674 1.1 christos {
1675 1.1 christos if (info [src].addend != curr)
1676 1.1 christos break;
1677 1.1 christos /* For duplicates, make sure that GOT_OFFSET is
1678 1.1 christos valid. */
1679 1.1 christos if (got_offset == (bfd_vma) -1)
1680 1.1 christos got_offset = info [src].got_offset;
1681 1.1 christos }
1682 1.1 christos
1683 1.1 christos /* Make sure that the kept one has a valid got_offset. */
1684 1.1 christos if (got_offset != (bfd_vma) -1)
1685 1.1 christos info [kept].got_offset = got_offset;
1686 1.1 christos }
1687 1.1 christos else
1688 1.1 christos src = i;
1689 1.1 christos
1690 1.1 christos if (src >= count)
1691 1.1 christos break;
1692 1.1 christos
1693 1.1 christos /* Find the next duplicate. SRC will be kept. */
1694 1.1 christos prev = info [src].addend;
1695 1.1 christos got_offset = info [src].got_offset;
1696 1.1 christos for (dupes = src + 1; dupes < count; dupes ++)
1697 1.1 christos {
1698 1.1 christos curr = info [dupes].addend;
1699 1.1 christos if (curr == prev)
1700 1.1 christos {
1701 1.1 christos /* Make sure that got_offset is valid. */
1702 1.1 christos if (got_offset == (bfd_vma) -1)
1703 1.1 christos got_offset = info [dupes].got_offset;
1704 1.1 christos
1705 1.1 christos /* For duplicates, make sure that the kept one has
1706 1.1 christos a valid got_offset. */
1707 1.1 christos if (got_offset != (bfd_vma) -1)
1708 1.1 christos info [dupes - 1].got_offset = got_offset;
1709 1.1 christos break;
1710 1.1 christos }
1711 1.1 christos got_offset = info [dupes].got_offset;
1712 1.1 christos prev = curr;
1713 1.1 christos }
1714 1.1 christos
1715 1.1 christos /* How much to move. */
1716 1.1 christos len = dupes - src;
1717 1.1 christos i = dupes + 1;
1718 1.1 christos
1719 1.1 christos if (len == 1 && dupes < count)
1720 1.1 christos {
1721 1.1 christos /* If we only move 1 element, we combine it with the next
1722 1.1 christos one. There must be at least a duplicate. Find the
1723 1.1 christos next different one. */
1724 1.1 christos for (diff = dupes + 1, src++; diff < count; diff++, src++)
1725 1.1 christos {
1726 1.1 christos if (info [diff].addend != curr)
1727 1.1 christos break;
1728 1.1 christos /* Make sure that got_offset is valid. */
1729 1.1 christos if (got_offset == (bfd_vma) -1)
1730 1.1 christos got_offset = info [diff].got_offset;
1731 1.1 christos }
1732 1.1 christos
1733 1.1 christos /* Makre sure that the last duplicated one has an valid
1734 1.1 christos offset. */
1735 1.1 christos BFD_ASSERT (curr == prev);
1736 1.1 christos if (got_offset != (bfd_vma) -1)
1737 1.1 christos info [diff - 1].got_offset = got_offset;
1738 1.1 christos
1739 1.1 christos if (diff < count)
1740 1.1 christos {
1741 1.1 christos /* Find the next duplicate. Track the current valid
1742 1.1 christos offset. */
1743 1.1 christos prev = info [diff].addend;
1744 1.1 christos got_offset = info [diff].got_offset;
1745 1.1 christos for (dupes = diff + 1; dupes < count; dupes ++)
1746 1.1 christos {
1747 1.1 christos curr = info [dupes].addend;
1748 1.1 christos if (curr == prev)
1749 1.1 christos {
1750 1.1 christos /* For duplicates, make sure that GOT_OFFSET
1751 1.1 christos is valid. */
1752 1.1 christos if (got_offset == (bfd_vma) -1)
1753 1.1 christos got_offset = info [dupes].got_offset;
1754 1.1 christos break;
1755 1.1 christos }
1756 1.1 christos got_offset = info [dupes].got_offset;
1757 1.1 christos prev = curr;
1758 1.1 christos diff++;
1759 1.1 christos }
1760 1.1 christos
1761 1.1 christos len = diff - src + 1;
1762 1.1 christos i = diff + 1;
1763 1.1 christos }
1764 1.1 christos }
1765 1.1 christos
1766 1.1 christos memmove (&info [dest], &info [src], len * sizeof (*info));
1767 1.1 christos
1768 1.1 christos dest += len;
1769 1.1 christos }
1770 1.1 christos
1771 1.1 christos count = dest;
1772 1.1 christos }
1773 1.1 christos else
1774 1.1 christos {
1775 1.1 christos /* When we get here, either there is no duplicate at all or
1776 1.1 christos the only duplicate is the last element. */
1777 1.1 christos if (dest < count)
1778 1.1 christos {
1779 1.1 christos /* If the last element is a duplicate, make sure that the
1780 1.1 christos kept one has a valid got_offset. We also update count. */
1781 1.1 christos if (got_offset != (bfd_vma) -1)
1782 1.1 christos info [dest - 1].got_offset = got_offset;
1783 1.1 christos count = dest;
1784 1.1 christos }
1785 1.1 christos }
1786 1.1 christos
1787 1.1 christos return count;
1788 1.1 christos }
1789 1.1 christos
1790 1.1 christos /* Find and/or create a descriptor for dynamic symbol info. This will
1791 1.1 christos vary based on global or local symbol, and the addend to the reloc.
1792 1.1 christos
1793 1.1 christos We don't sort when inserting. Also, we sort and eliminate
1794 1.1 christos duplicates if there is an unsorted section. Typically, this will
1795 1.1 christos only happen once, because we do all insertions before lookups. We
1796 1.1 christos then use bsearch to do a lookup. This also allows lookups to be
1797 1.1 christos fast. So we have fast insertion (O(log N) due to duplicate check),
1798 1.1 christos fast lookup (O(log N)) and one sort (O(N log N) expected time).
1799 1.1 christos Previously, all lookups were O(N) because of the use of the linked
1800 1.1 christos list and also all insertions were O(N) because of the check for
1801 1.1 christos duplicates. There are some complications here because the array
1802 1.1 christos size grows occasionally, which may add an O(N) factor, but this
1803 1.1 christos should be rare. Also, we free the excess array allocation, which
1804 1.1 christos requires a copy which is O(N), but this only happens once. */
1805 1.1 christos
1806 1.1 christos static struct elfNN_ia64_dyn_sym_info *
1807 1.1 christos get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info,
1808 1.1 christos struct elf_link_hash_entry *h, bfd *abfd,
1809 1.1 christos const Elf_Internal_Rela *rel, bfd_boolean create)
1810 1.1 christos {
1811 1.1 christos struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key;
1812 1.1 christos unsigned int *count_p, *sorted_count_p, *size_p;
1813 1.1 christos unsigned int count, sorted_count, size;
1814 1.1 christos bfd_vma addend = rel ? rel->r_addend : 0;
1815 1.1 christos bfd_size_type amt;
1816 1.1 christos
1817 1.1 christos if (h)
1818 1.1 christos {
1819 1.1 christos struct elfNN_ia64_link_hash_entry *global_h;
1820 1.1 christos
1821 1.1 christos global_h = (struct elfNN_ia64_link_hash_entry *) h;
1822 1.1 christos info_p = &global_h->info;
1823 1.1 christos count_p = &global_h->count;
1824 1.1 christos sorted_count_p = &global_h->sorted_count;
1825 1.1 christos size_p = &global_h->size;
1826 1.1 christos }
1827 1.1 christos else
1828 1.1 christos {
1829 1.1 christos struct elfNN_ia64_local_hash_entry *loc_h;
1830 1.1 christos
1831 1.1 christos loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1832 1.1 christos if (!loc_h)
1833 1.1 christos {
1834 1.1 christos BFD_ASSERT (!create);
1835 1.1 christos return NULL;
1836 1.1 christos }
1837 1.1 christos
1838 1.1 christos info_p = &loc_h->info;
1839 1.1 christos count_p = &loc_h->count;
1840 1.1 christos sorted_count_p = &loc_h->sorted_count;
1841 1.1 christos size_p = &loc_h->size;
1842 1.1 christos }
1843 1.1 christos
1844 1.1 christos count = *count_p;
1845 1.1 christos sorted_count = *sorted_count_p;
1846 1.1 christos size = *size_p;
1847 1.1 christos info = *info_p;
1848 1.1 christos if (create)
1849 1.1 christos {
1850 1.1 christos /* When we create the array, we don't check for duplicates,
1851 1.1 christos except in the previously sorted section if one exists, and
1852 1.1 christos against the last inserted entry. This allows insertions to
1853 1.1 christos be fast. */
1854 1.1 christos if (info)
1855 1.1 christos {
1856 1.1 christos if (sorted_count)
1857 1.1 christos {
1858 1.1 christos /* Try bsearch first on the sorted section. */
1859 1.1 christos key.addend = addend;
1860 1.1 christos dyn_i = bsearch (&key, info, sorted_count,
1861 1.1 christos sizeof (*info), addend_compare);
1862 1.1 christos
1863 1.1 christos if (dyn_i)
1864 1.1 christos {
1865 1.1 christos return dyn_i;
1866 1.1 christos }
1867 1.1 christos }
1868 1.1 christos
1869 1.1 christos /* Do a quick check for the last inserted entry. */
1870 1.1 christos dyn_i = info + count - 1;
1871 1.1 christos if (dyn_i->addend == addend)
1872 1.1 christos {
1873 1.1 christos return dyn_i;
1874 1.1 christos }
1875 1.1 christos }
1876 1.1 christos
1877 1.1 christos if (size == 0)
1878 1.1 christos {
1879 1.1 christos /* It is the very first element. We create the array of size
1880 1.1 christos 1. */
1881 1.1 christos size = 1;
1882 1.1 christos amt = size * sizeof (*info);
1883 1.1 christos info = bfd_malloc (amt);
1884 1.1 christos }
1885 1.1 christos else if (size <= count)
1886 1.1 christos {
1887 1.1 christos /* We double the array size every time when we reach the
1888 1.1 christos size limit. */
1889 1.1 christos size += size;
1890 1.1 christos amt = size * sizeof (*info);
1891 1.1 christos info = bfd_realloc (info, amt);
1892 1.1 christos }
1893 1.1 christos else
1894 1.1 christos goto has_space;
1895 1.1 christos
1896 1.1 christos if (info == NULL)
1897 1.1 christos return NULL;
1898 1.1 christos *size_p = size;
1899 1.1 christos *info_p = info;
1900 1.1 christos
1901 1.1 christos has_space:
1902 1.1 christos /* Append the new one to the array. */
1903 1.1 christos dyn_i = info + count;
1904 1.1 christos memset (dyn_i, 0, sizeof (*dyn_i));
1905 1.1 christos dyn_i->got_offset = (bfd_vma) -1;
1906 1.1 christos dyn_i->addend = addend;
1907 1.1 christos
1908 1.1 christos /* We increment count only since the new ones are unsorted and
1909 1.1 christos may have duplicate. */
1910 1.1 christos (*count_p)++;
1911 1.1 christos }
1912 1.1 christos else
1913 1.1 christos {
1914 1.1 christos /* It is a lookup without insertion. Sort array if part of the
1915 1.1 christos array isn't sorted. */
1916 1.1 christos if (count != sorted_count)
1917 1.1 christos {
1918 1.1 christos count = sort_dyn_sym_info (info, count);
1919 1.1 christos *count_p = count;
1920 1.1 christos *sorted_count_p = count;
1921 1.1 christos }
1922 1.1 christos
1923 1.1 christos /* Free unused memory. */
1924 1.1 christos if (size != count)
1925 1.1 christos {
1926 1.1 christos amt = count * sizeof (*info);
1927 1.1 christos info = bfd_malloc (amt);
1928 1.1 christos if (info != NULL)
1929 1.1 christos {
1930 1.1 christos memcpy (info, *info_p, amt);
1931 1.1 christos free (*info_p);
1932 1.1 christos *size_p = count;
1933 1.1 christos *info_p = info;
1934 1.1 christos }
1935 1.1 christos }
1936 1.1 christos
1937 1.1 christos key.addend = addend;
1938 1.1 christos dyn_i = bsearch (&key, info, count,
1939 1.1 christos sizeof (*info), addend_compare);
1940 1.1 christos }
1941 1.1 christos
1942 1.1 christos return dyn_i;
1943 1.1 christos }
1944 1.1 christos
1945 1.1 christos static asection *
1946 1.1 christos get_got (bfd *abfd, struct bfd_link_info *info,
1947 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info)
1948 1.1 christos {
1949 1.1 christos asection *got;
1950 1.1 christos bfd *dynobj;
1951 1.1 christos
1952 1.1 christos got = ia64_info->root.sgot;
1953 1.1 christos if (!got)
1954 1.1 christos {
1955 1.1.1.2 christos flagword flags;
1956 1.1 christos
1957 1.1 christos dynobj = ia64_info->root.dynobj;
1958 1.1 christos if (!dynobj)
1959 1.1 christos ia64_info->root.dynobj = dynobj = abfd;
1960 1.1 christos if (!_bfd_elf_create_got_section (dynobj, info))
1961 1.1.1.2 christos return NULL;
1962 1.1 christos
1963 1.1 christos got = ia64_info->root.sgot;
1964 1.1.1.2 christos
1965 1.1.1.2 christos /* The .got section is always aligned at 8 bytes. */
1966 1.1 christos if (!bfd_set_section_alignment (abfd, got, 3))
1967 1.1 christos return NULL;
1968 1.1 christos
1969 1.1 christos flags = bfd_get_section_flags (abfd, got);
1970 1.1 christos if (! bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags))
1971 1.1 christos return NULL;
1972 1.1 christos }
1973 1.1 christos
1974 1.1 christos return got;
1975 1.1 christos }
1976 1.1 christos
1977 1.1 christos /* Create function descriptor section (.opd). This section is called .opd
1978 1.1 christos because it contains "official procedure descriptors". The "official"
1979 1.1 christos refers to the fact that these descriptors are used when taking the address
1980 1.1 christos of a procedure, thus ensuring a unique address for each procedure. */
1981 1.1 christos
1982 1.1 christos static asection *
1983 1.1 christos get_fptr (bfd *abfd, struct bfd_link_info *info,
1984 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info)
1985 1.1 christos {
1986 1.1 christos asection *fptr;
1987 1.1 christos bfd *dynobj;
1988 1.1 christos
1989 1.1 christos fptr = ia64_info->fptr_sec;
1990 1.1 christos if (!fptr)
1991 1.1 christos {
1992 1.1 christos dynobj = ia64_info->root.dynobj;
1993 1.1 christos if (!dynobj)
1994 1.1 christos ia64_info->root.dynobj = dynobj = abfd;
1995 1.1 christos
1996 1.1 christos fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd",
1997 1.1 christos (SEC_ALLOC
1998 1.1 christos | SEC_LOAD
1999 1.1 christos | SEC_HAS_CONTENTS
2000 1.1 christos | SEC_IN_MEMORY
2001 1.1 christos | (info->pie ? 0
2002 1.1 christos : SEC_READONLY)
2003 1.1 christos | SEC_LINKER_CREATED));
2004 1.1 christos if (!fptr
2005 1.1 christos || !bfd_set_section_alignment (abfd, fptr, 4))
2006 1.1 christos {
2007 1.1 christos BFD_ASSERT (0);
2008 1.1 christos return NULL;
2009 1.1 christos }
2010 1.1 christos
2011 1.1 christos ia64_info->fptr_sec = fptr;
2012 1.1 christos
2013 1.1 christos if (info->pie)
2014 1.1 christos {
2015 1.1 christos asection *fptr_rel;
2016 1.1 christos fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd",
2017 1.1 christos (SEC_ALLOC | SEC_LOAD
2018 1.1 christos | SEC_HAS_CONTENTS
2019 1.1 christos | SEC_IN_MEMORY
2020 1.1 christos | SEC_LINKER_CREATED
2021 1.1 christos | SEC_READONLY));
2022 1.1 christos if (fptr_rel == NULL
2023 1.1 christos || !bfd_set_section_alignment (abfd, fptr_rel,
2024 1.1 christos LOG_SECTION_ALIGN))
2025 1.1 christos {
2026 1.1 christos BFD_ASSERT (0);
2027 1.1 christos return NULL;
2028 1.1 christos }
2029 1.1 christos
2030 1.1 christos ia64_info->rel_fptr_sec = fptr_rel;
2031 1.1 christos }
2032 1.1 christos }
2033 1.1 christos
2034 1.1 christos return fptr;
2035 1.1 christos }
2036 1.1 christos
2037 1.1 christos static asection *
2038 1.1 christos get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED,
2039 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info)
2040 1.1 christos {
2041 1.1 christos asection *pltoff;
2042 1.1 christos bfd *dynobj;
2043 1.1 christos
2044 1.1 christos pltoff = ia64_info->pltoff_sec;
2045 1.1 christos if (!pltoff)
2046 1.1 christos {
2047 1.1 christos dynobj = ia64_info->root.dynobj;
2048 1.1 christos if (!dynobj)
2049 1.1 christos ia64_info->root.dynobj = dynobj = abfd;
2050 1.1 christos
2051 1.1 christos pltoff = bfd_make_section_anyway_with_flags (dynobj,
2052 1.1 christos ELF_STRING_ia64_pltoff,
2053 1.1 christos (SEC_ALLOC
2054 1.1 christos | SEC_LOAD
2055 1.1 christos | SEC_HAS_CONTENTS
2056 1.1 christos | SEC_IN_MEMORY
2057 1.1 christos | SEC_SMALL_DATA
2058 1.1 christos | SEC_LINKER_CREATED));
2059 1.1 christos if (!pltoff
2060 1.1 christos || !bfd_set_section_alignment (abfd, pltoff, 4))
2061 1.1 christos {
2062 1.1 christos BFD_ASSERT (0);
2063 1.1 christos return NULL;
2064 1.1 christos }
2065 1.1 christos
2066 1.1 christos ia64_info->pltoff_sec = pltoff;
2067 1.1 christos }
2068 1.1 christos
2069 1.1 christos return pltoff;
2070 1.1 christos }
2071 1.1 christos
2072 1.1 christos static asection *
2073 1.1 christos get_reloc_section (bfd *abfd,
2074 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info,
2075 1.1 christos asection *sec, bfd_boolean create)
2076 1.1 christos {
2077 1.1 christos const char *srel_name;
2078 1.1 christos asection *srel;
2079 1.1 christos bfd *dynobj;
2080 1.1 christos
2081 1.1 christos srel_name = (bfd_elf_string_from_elf_section
2082 1.1 christos (abfd, elf_elfheader(abfd)->e_shstrndx,
2083 1.1 christos _bfd_elf_single_rel_hdr (sec)->sh_name));
2084 1.1 christos if (srel_name == NULL)
2085 1.1 christos return NULL;
2086 1.1 christos
2087 1.1 christos dynobj = ia64_info->root.dynobj;
2088 1.1 christos if (!dynobj)
2089 1.1 christos ia64_info->root.dynobj = dynobj = abfd;
2090 1.1 christos
2091 1.1 christos srel = bfd_get_linker_section (dynobj, srel_name);
2092 1.1 christos if (srel == NULL && create)
2093 1.1 christos {
2094 1.1 christos srel = bfd_make_section_anyway_with_flags (dynobj, srel_name,
2095 1.1 christos (SEC_ALLOC | SEC_LOAD
2096 1.1 christos | SEC_HAS_CONTENTS
2097 1.1 christos | SEC_IN_MEMORY
2098 1.1 christos | SEC_LINKER_CREATED
2099 1.1 christos | SEC_READONLY));
2100 1.1 christos if (srel == NULL
2101 1.1 christos || !bfd_set_section_alignment (dynobj, srel,
2102 1.1 christos LOG_SECTION_ALIGN))
2103 1.1 christos return NULL;
2104 1.1 christos }
2105 1.1 christos
2106 1.1 christos return srel;
2107 1.1 christos }
2108 1.1 christos
2109 1.1 christos static bfd_boolean
2110 1.1 christos count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2111 1.1 christos asection *srel, int type, bfd_boolean reltext)
2112 1.1 christos {
2113 1.1 christos struct elfNN_ia64_dyn_reloc_entry *rent;
2114 1.1 christos
2115 1.1 christos for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2116 1.1 christos if (rent->srel == srel && rent->type == type)
2117 1.1 christos break;
2118 1.1 christos
2119 1.1 christos if (!rent)
2120 1.1 christos {
2121 1.1 christos rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2122 1.1 christos bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2123 1.1 christos if (!rent)
2124 1.1 christos return FALSE;
2125 1.1 christos
2126 1.1 christos rent->next = dyn_i->reloc_entries;
2127 1.1 christos rent->srel = srel;
2128 1.1 christos rent->type = type;
2129 1.1 christos rent->count = 0;
2130 1.1 christos dyn_i->reloc_entries = rent;
2131 1.1 christos }
2132 1.1 christos rent->reltext = reltext;
2133 1.1 christos rent->count++;
2134 1.1 christos
2135 1.1 christos return TRUE;
2136 1.1 christos }
2137 1.1 christos
2138 1.1 christos static bfd_boolean
2139 1.1 christos elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2140 1.1 christos asection *sec,
2141 1.1 christos const Elf_Internal_Rela *relocs)
2142 1.1 christos {
2143 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2144 1.1 christos const Elf_Internal_Rela *relend;
2145 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2146 1.1 christos const Elf_Internal_Rela *rel;
2147 1.1 christos asection *got, *fptr, *srel, *pltoff;
2148 1.1 christos enum {
2149 1.1 christos NEED_GOT = 1,
2150 1.1 christos NEED_GOTX = 2,
2151 1.1 christos NEED_FPTR = 4,
2152 1.1 christos NEED_PLTOFF = 8,
2153 1.1 christos NEED_MIN_PLT = 16,
2154 1.1 christos NEED_FULL_PLT = 32,
2155 1.1 christos NEED_DYNREL = 64,
2156 1.1 christos NEED_LTOFF_FPTR = 128,
2157 1.1 christos NEED_TPREL = 256,
2158 1.1 christos NEED_DTPMOD = 512,
2159 1.1 christos NEED_DTPREL = 1024
2160 1.1 christos };
2161 1.1 christos int need_entry;
2162 1.1 christos struct elf_link_hash_entry *h;
2163 1.1 christos unsigned long r_symndx;
2164 1.1 christos bfd_boolean maybe_dynamic;
2165 1.1 christos
2166 1.1 christos if (info->relocatable)
2167 1.1 christos return TRUE;
2168 1.1 christos
2169 1.1 christos symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2170 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
2171 1.1 christos if (ia64_info == NULL)
2172 1.1 christos return FALSE;
2173 1.1 christos
2174 1.1 christos got = fptr = srel = pltoff = NULL;
2175 1.1 christos
2176 1.1 christos relend = relocs + sec->reloc_count;
2177 1.1 christos
2178 1.1 christos /* We scan relocations first to create dynamic relocation arrays. We
2179 1.1 christos modified get_dyn_sym_info to allow fast insertion and support fast
2180 1.1 christos lookup in the next loop. */
2181 1.1 christos for (rel = relocs; rel < relend; ++rel)
2182 1.1 christos {
2183 1.1 christos r_symndx = ELFNN_R_SYM (rel->r_info);
2184 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
2185 1.1 christos {
2186 1.1 christos long indx = r_symndx - symtab_hdr->sh_info;
2187 1.1 christos h = elf_sym_hashes (abfd)[indx];
2188 1.1 christos while (h->root.type == bfd_link_hash_indirect
2189 1.1 christos || h->root.type == bfd_link_hash_warning)
2190 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2191 1.1 christos }
2192 1.1 christos else
2193 1.1 christos h = NULL;
2194 1.1 christos
2195 1.1 christos /* We can only get preliminary data on whether a symbol is
2196 1.1 christos locally or externally defined, as not all of the input files
2197 1.1 christos have yet been processed. Do something with what we know, as
2198 1.1 christos this may help reduce memory usage and processing time later. */
2199 1.1 christos maybe_dynamic = (h && ((!info->executable
2200 1.1 christos && (!SYMBOLIC_BIND (info, h)
2201 1.1 christos || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2202 1.1 christos || !h->def_regular
2203 1.1 christos || h->root.type == bfd_link_hash_defweak));
2204 1.1 christos
2205 1.1 christos need_entry = 0;
2206 1.1 christos switch (ELFNN_R_TYPE (rel->r_info))
2207 1.1 christos {
2208 1.1 christos case R_IA64_TPREL64MSB:
2209 1.1 christos case R_IA64_TPREL64LSB:
2210 1.1 christos if (info->shared || maybe_dynamic)
2211 1.1 christos need_entry = NEED_DYNREL;
2212 1.1 christos break;
2213 1.1 christos
2214 1.1 christos case R_IA64_LTOFF_TPREL22:
2215 1.1 christos need_entry = NEED_TPREL;
2216 1.1 christos if (info->shared)
2217 1.1 christos info->flags |= DF_STATIC_TLS;
2218 1.1 christos break;
2219 1.1 christos
2220 1.1 christos case R_IA64_DTPREL32MSB:
2221 1.1 christos case R_IA64_DTPREL32LSB:
2222 1.1 christos case R_IA64_DTPREL64MSB:
2223 1.1 christos case R_IA64_DTPREL64LSB:
2224 1.1 christos if (info->shared || maybe_dynamic)
2225 1.1 christos need_entry = NEED_DYNREL;
2226 1.1 christos break;
2227 1.1 christos
2228 1.1 christos case R_IA64_LTOFF_DTPREL22:
2229 1.1 christos need_entry = NEED_DTPREL;
2230 1.1 christos break;
2231 1.1 christos
2232 1.1 christos case R_IA64_DTPMOD64MSB:
2233 1.1 christos case R_IA64_DTPMOD64LSB:
2234 1.1 christos if (info->shared || maybe_dynamic)
2235 1.1 christos need_entry = NEED_DYNREL;
2236 1.1 christos break;
2237 1.1 christos
2238 1.1 christos case R_IA64_LTOFF_DTPMOD22:
2239 1.1 christos need_entry = NEED_DTPMOD;
2240 1.1 christos break;
2241 1.1 christos
2242 1.1 christos case R_IA64_LTOFF_FPTR22:
2243 1.1 christos case R_IA64_LTOFF_FPTR64I:
2244 1.1 christos case R_IA64_LTOFF_FPTR32MSB:
2245 1.1 christos case R_IA64_LTOFF_FPTR32LSB:
2246 1.1 christos case R_IA64_LTOFF_FPTR64MSB:
2247 1.1 christos case R_IA64_LTOFF_FPTR64LSB:
2248 1.1 christos need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2249 1.1 christos break;
2250 1.1 christos
2251 1.1 christos case R_IA64_FPTR64I:
2252 1.1 christos case R_IA64_FPTR32MSB:
2253 1.1 christos case R_IA64_FPTR32LSB:
2254 1.1 christos case R_IA64_FPTR64MSB:
2255 1.1 christos case R_IA64_FPTR64LSB:
2256 1.1 christos if (info->shared || h)
2257 1.1 christos need_entry = NEED_FPTR | NEED_DYNREL;
2258 1.1 christos else
2259 1.1 christos need_entry = NEED_FPTR;
2260 1.1 christos break;
2261 1.1 christos
2262 1.1 christos case R_IA64_LTOFF22:
2263 1.1 christos case R_IA64_LTOFF64I:
2264 1.1 christos need_entry = NEED_GOT;
2265 1.1 christos break;
2266 1.1 christos
2267 1.1 christos case R_IA64_LTOFF22X:
2268 1.1 christos need_entry = NEED_GOTX;
2269 1.1 christos break;
2270 1.1 christos
2271 1.1 christos case R_IA64_PLTOFF22:
2272 1.1 christos case R_IA64_PLTOFF64I:
2273 1.1 christos case R_IA64_PLTOFF64MSB:
2274 1.1 christos case R_IA64_PLTOFF64LSB:
2275 1.1 christos need_entry = NEED_PLTOFF;
2276 1.1 christos if (h)
2277 1.1 christos {
2278 1.1 christos if (maybe_dynamic)
2279 1.1 christos need_entry |= NEED_MIN_PLT;
2280 1.1 christos }
2281 1.1 christos else
2282 1.1 christos {
2283 1.1 christos (*info->callbacks->warning)
2284 1.1 christos (info, _("@pltoff reloc against local symbol"), 0,
2285 1.1 christos abfd, 0, (bfd_vma) 0);
2286 1.1 christos }
2287 1.1 christos break;
2288 1.1 christos
2289 1.1 christos case R_IA64_PCREL21B:
2290 1.1 christos case R_IA64_PCREL60B:
2291 1.1 christos /* Depending on where this symbol is defined, we may or may not
2292 1.1 christos need a full plt entry. Only skip if we know we'll not need
2293 1.1 christos the entry -- static or symbolic, and the symbol definition
2294 1.1 christos has already been seen. */
2295 1.1 christos if (maybe_dynamic && rel->r_addend == 0)
2296 1.1 christos need_entry = NEED_FULL_PLT;
2297 1.1 christos break;
2298 1.1 christos
2299 1.1 christos case R_IA64_IMM14:
2300 1.1 christos case R_IA64_IMM22:
2301 1.1 christos case R_IA64_IMM64:
2302 1.1 christos case R_IA64_DIR32MSB:
2303 1.1 christos case R_IA64_DIR32LSB:
2304 1.1 christos case R_IA64_DIR64MSB:
2305 1.1 christos case R_IA64_DIR64LSB:
2306 1.1 christos /* Shared objects will always need at least a REL relocation. */
2307 1.1 christos if (info->shared || maybe_dynamic)
2308 1.1 christos need_entry = NEED_DYNREL;
2309 1.1 christos break;
2310 1.1 christos
2311 1.1 christos case R_IA64_IPLTMSB:
2312 1.1 christos case R_IA64_IPLTLSB:
2313 1.1 christos /* Shared objects will always need at least a REL relocation. */
2314 1.1 christos if (info->shared || maybe_dynamic)
2315 1.1 christos need_entry = NEED_DYNREL;
2316 1.1 christos break;
2317 1.1 christos
2318 1.1 christos case R_IA64_PCREL22:
2319 1.1 christos case R_IA64_PCREL64I:
2320 1.1 christos case R_IA64_PCREL32MSB:
2321 1.1 christos case R_IA64_PCREL32LSB:
2322 1.1 christos case R_IA64_PCREL64MSB:
2323 1.1 christos case R_IA64_PCREL64LSB:
2324 1.1 christos if (maybe_dynamic)
2325 1.1 christos need_entry = NEED_DYNREL;
2326 1.1 christos break;
2327 1.1 christos }
2328 1.1 christos
2329 1.1 christos if (!need_entry)
2330 1.1 christos continue;
2331 1.1 christos
2332 1.1 christos if ((need_entry & NEED_FPTR) != 0
2333 1.1 christos && rel->r_addend)
2334 1.1 christos {
2335 1.1 christos (*info->callbacks->warning)
2336 1.1 christos (info, _("non-zero addend in @fptr reloc"), 0,
2337 1.1 christos abfd, 0, (bfd_vma) 0);
2338 1.1 christos }
2339 1.1 christos
2340 1.1 christos if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL)
2341 1.1 christos return FALSE;
2342 1.1 christos }
2343 1.1 christos
2344 1.1 christos /* Now, we only do lookup without insertion, which is very fast
2345 1.1 christos with the modified get_dyn_sym_info. */
2346 1.1 christos for (rel = relocs; rel < relend; ++rel)
2347 1.1 christos {
2348 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
2349 1.1 christos int dynrel_type = R_IA64_NONE;
2350 1.1 christos
2351 1.1 christos r_symndx = ELFNN_R_SYM (rel->r_info);
2352 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
2353 1.1 christos {
2354 1.1 christos /* We're dealing with a global symbol -- find its hash entry
2355 1.1 christos and mark it as being referenced. */
2356 1.1.1.2 christos long indx = r_symndx - symtab_hdr->sh_info;
2357 1.1.1.2 christos h = elf_sym_hashes (abfd)[indx];
2358 1.1.1.2 christos while (h->root.type == bfd_link_hash_indirect
2359 1.1 christos || h->root.type == bfd_link_hash_warning)
2360 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2361 1.1 christos
2362 1.1 christos /* PR15323, ref flags aren't set for references in the same
2363 1.1 christos object. */
2364 1.1 christos h->root.non_ir_ref = 1;
2365 1.1 christos h->ref_regular = 1;
2366 1.1 christos }
2367 1.1 christos else
2368 1.1 christos h = NULL;
2369 1.1 christos
2370 1.1 christos /* We can only get preliminary data on whether a symbol is
2371 1.1 christos locally or externally defined, as not all of the input files
2372 1.1 christos have yet been processed. Do something with what we know, as
2373 1.1 christos this may help reduce memory usage and processing time later. */
2374 1.1 christos maybe_dynamic = (h && ((!info->executable
2375 1.1 christos && (!SYMBOLIC_BIND (info, h)
2376 1.1 christos || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2377 1.1 christos || !h->def_regular
2378 1.1 christos || h->root.type == bfd_link_hash_defweak));
2379 1.1 christos
2380 1.1 christos need_entry = 0;
2381 1.1 christos switch (ELFNN_R_TYPE (rel->r_info))
2382 1.1 christos {
2383 1.1 christos case R_IA64_TPREL64MSB:
2384 1.1 christos case R_IA64_TPREL64LSB:
2385 1.1 christos if (info->shared || maybe_dynamic)
2386 1.1 christos need_entry = NEED_DYNREL;
2387 1.1 christos dynrel_type = R_IA64_TPREL64LSB;
2388 1.1 christos if (info->shared)
2389 1.1 christos info->flags |= DF_STATIC_TLS;
2390 1.1 christos break;
2391 1.1 christos
2392 1.1 christos case R_IA64_LTOFF_TPREL22:
2393 1.1 christos need_entry = NEED_TPREL;
2394 1.1 christos if (info->shared)
2395 1.1 christos info->flags |= DF_STATIC_TLS;
2396 1.1 christos break;
2397 1.1 christos
2398 1.1 christos case R_IA64_DTPREL32MSB:
2399 1.1 christos case R_IA64_DTPREL32LSB:
2400 1.1 christos case R_IA64_DTPREL64MSB:
2401 1.1 christos case R_IA64_DTPREL64LSB:
2402 1.1 christos if (info->shared || maybe_dynamic)
2403 1.1 christos need_entry = NEED_DYNREL;
2404 1.1 christos dynrel_type = R_IA64_DTPRELNNLSB;
2405 1.1 christos break;
2406 1.1 christos
2407 1.1 christos case R_IA64_LTOFF_DTPREL22:
2408 1.1 christos need_entry = NEED_DTPREL;
2409 1.1 christos break;
2410 1.1 christos
2411 1.1 christos case R_IA64_DTPMOD64MSB:
2412 1.1 christos case R_IA64_DTPMOD64LSB:
2413 1.1 christos if (info->shared || maybe_dynamic)
2414 1.1 christos need_entry = NEED_DYNREL;
2415 1.1 christos dynrel_type = R_IA64_DTPMOD64LSB;
2416 1.1 christos break;
2417 1.1 christos
2418 1.1 christos case R_IA64_LTOFF_DTPMOD22:
2419 1.1 christos need_entry = NEED_DTPMOD;
2420 1.1 christos break;
2421 1.1 christos
2422 1.1 christos case R_IA64_LTOFF_FPTR22:
2423 1.1 christos case R_IA64_LTOFF_FPTR64I:
2424 1.1 christos case R_IA64_LTOFF_FPTR32MSB:
2425 1.1 christos case R_IA64_LTOFF_FPTR32LSB:
2426 1.1 christos case R_IA64_LTOFF_FPTR64MSB:
2427 1.1 christos case R_IA64_LTOFF_FPTR64LSB:
2428 1.1 christos need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2429 1.1 christos break;
2430 1.1 christos
2431 1.1 christos case R_IA64_FPTR64I:
2432 1.1 christos case R_IA64_FPTR32MSB:
2433 1.1 christos case R_IA64_FPTR32LSB:
2434 1.1 christos case R_IA64_FPTR64MSB:
2435 1.1 christos case R_IA64_FPTR64LSB:
2436 1.1 christos if (info->shared || h)
2437 1.1 christos need_entry = NEED_FPTR | NEED_DYNREL;
2438 1.1 christos else
2439 1.1 christos need_entry = NEED_FPTR;
2440 1.1 christos dynrel_type = R_IA64_FPTRNNLSB;
2441 1.1 christos break;
2442 1.1 christos
2443 1.1 christos case R_IA64_LTOFF22:
2444 1.1 christos case R_IA64_LTOFF64I:
2445 1.1 christos need_entry = NEED_GOT;
2446 1.1 christos break;
2447 1.1 christos
2448 1.1 christos case R_IA64_LTOFF22X:
2449 1.1 christos need_entry = NEED_GOTX;
2450 1.1 christos break;
2451 1.1 christos
2452 1.1 christos case R_IA64_PLTOFF22:
2453 1.1 christos case R_IA64_PLTOFF64I:
2454 1.1 christos case R_IA64_PLTOFF64MSB:
2455 1.1 christos case R_IA64_PLTOFF64LSB:
2456 1.1 christos need_entry = NEED_PLTOFF;
2457 1.1 christos if (h)
2458 1.1 christos {
2459 1.1 christos if (maybe_dynamic)
2460 1.1 christos need_entry |= NEED_MIN_PLT;
2461 1.1 christos }
2462 1.1 christos break;
2463 1.1 christos
2464 1.1 christos case R_IA64_PCREL21B:
2465 1.1 christos case R_IA64_PCREL60B:
2466 1.1 christos /* Depending on where this symbol is defined, we may or may not
2467 1.1 christos need a full plt entry. Only skip if we know we'll not need
2468 1.1 christos the entry -- static or symbolic, and the symbol definition
2469 1.1 christos has already been seen. */
2470 1.1 christos if (maybe_dynamic && rel->r_addend == 0)
2471 1.1 christos need_entry = NEED_FULL_PLT;
2472 1.1 christos break;
2473 1.1 christos
2474 1.1 christos case R_IA64_IMM14:
2475 1.1 christos case R_IA64_IMM22:
2476 1.1 christos case R_IA64_IMM64:
2477 1.1 christos case R_IA64_DIR32MSB:
2478 1.1 christos case R_IA64_DIR32LSB:
2479 1.1 christos case R_IA64_DIR64MSB:
2480 1.1 christos case R_IA64_DIR64LSB:
2481 1.1 christos /* Shared objects will always need at least a REL relocation. */
2482 1.1 christos if (info->shared || maybe_dynamic)
2483 1.1 christos need_entry = NEED_DYNREL;
2484 1.1 christos dynrel_type = R_IA64_DIRNNLSB;
2485 1.1 christos break;
2486 1.1 christos
2487 1.1 christos case R_IA64_IPLTMSB:
2488 1.1 christos case R_IA64_IPLTLSB:
2489 1.1 christos /* Shared objects will always need at least a REL relocation. */
2490 1.1 christos if (info->shared || maybe_dynamic)
2491 1.1 christos need_entry = NEED_DYNREL;
2492 1.1 christos dynrel_type = R_IA64_IPLTLSB;
2493 1.1 christos break;
2494 1.1 christos
2495 1.1 christos case R_IA64_PCREL22:
2496 1.1 christos case R_IA64_PCREL64I:
2497 1.1 christos case R_IA64_PCREL32MSB:
2498 1.1 christos case R_IA64_PCREL32LSB:
2499 1.1 christos case R_IA64_PCREL64MSB:
2500 1.1 christos case R_IA64_PCREL64LSB:
2501 1.1 christos if (maybe_dynamic)
2502 1.1 christos need_entry = NEED_DYNREL;
2503 1.1 christos dynrel_type = R_IA64_PCRELNNLSB;
2504 1.1 christos break;
2505 1.1 christos }
2506 1.1 christos
2507 1.1 christos if (!need_entry)
2508 1.1 christos continue;
2509 1.1 christos
2510 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE);
2511 1.1 christos
2512 1.1 christos /* Record whether or not this is a local symbol. */
2513 1.1 christos dyn_i->h = h;
2514 1.1 christos
2515 1.1 christos /* Create what's needed. */
2516 1.1 christos if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2517 1.1 christos | NEED_DTPMOD | NEED_DTPREL))
2518 1.1 christos {
2519 1.1 christos if (!got)
2520 1.1 christos {
2521 1.1 christos got = get_got (abfd, info, ia64_info);
2522 1.1 christos if (!got)
2523 1.1 christos return FALSE;
2524 1.1 christos }
2525 1.1 christos if (need_entry & NEED_GOT)
2526 1.1 christos dyn_i->want_got = 1;
2527 1.1 christos if (need_entry & NEED_GOTX)
2528 1.1 christos dyn_i->want_gotx = 1;
2529 1.1 christos if (need_entry & NEED_TPREL)
2530 1.1 christos dyn_i->want_tprel = 1;
2531 1.1 christos if (need_entry & NEED_DTPMOD)
2532 1.1 christos dyn_i->want_dtpmod = 1;
2533 1.1 christos if (need_entry & NEED_DTPREL)
2534 1.1 christos dyn_i->want_dtprel = 1;
2535 1.1 christos }
2536 1.1 christos if (need_entry & NEED_FPTR)
2537 1.1 christos {
2538 1.1 christos if (!fptr)
2539 1.1 christos {
2540 1.1 christos fptr = get_fptr (abfd, info, ia64_info);
2541 1.1 christos if (!fptr)
2542 1.1 christos return FALSE;
2543 1.1 christos }
2544 1.1 christos
2545 1.1 christos /* FPTRs for shared libraries are allocated by the dynamic
2546 1.1 christos linker. Make sure this local symbol will appear in the
2547 1.1 christos dynamic symbol table. */
2548 1.1 christos if (!h && info->shared)
2549 1.1 christos {
2550 1.1 christos if (! (bfd_elf_link_record_local_dynamic_symbol
2551 1.1 christos (info, abfd, (long) r_symndx)))
2552 1.1 christos return FALSE;
2553 1.1 christos }
2554 1.1 christos
2555 1.1 christos dyn_i->want_fptr = 1;
2556 1.1 christos }
2557 1.1 christos if (need_entry & NEED_LTOFF_FPTR)
2558 1.1 christos dyn_i->want_ltoff_fptr = 1;
2559 1.1 christos if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2560 1.1 christos {
2561 1.1 christos if (!ia64_info->root.dynobj)
2562 1.1 christos ia64_info->root.dynobj = abfd;
2563 1.1 christos h->needs_plt = 1;
2564 1.1 christos dyn_i->want_plt = 1;
2565 1.1 christos }
2566 1.1 christos if (need_entry & NEED_FULL_PLT)
2567 1.1 christos dyn_i->want_plt2 = 1;
2568 1.1 christos if (need_entry & NEED_PLTOFF)
2569 1.1 christos {
2570 1.1 christos /* This is needed here, in case @pltoff is used in a non-shared
2571 1.1 christos link. */
2572 1.1 christos if (!pltoff)
2573 1.1 christos {
2574 1.1 christos pltoff = get_pltoff (abfd, info, ia64_info);
2575 1.1 christos if (!pltoff)
2576 1.1 christos return FALSE;
2577 1.1 christos }
2578 1.1 christos
2579 1.1 christos dyn_i->want_pltoff = 1;
2580 1.1 christos }
2581 1.1 christos if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2582 1.1 christos {
2583 1.1 christos if (!srel)
2584 1.1 christos {
2585 1.1 christos srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2586 1.1 christos if (!srel)
2587 1.1 christos return FALSE;
2588 1.1 christos }
2589 1.1 christos if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2590 1.1 christos (sec->flags & SEC_READONLY) != 0))
2591 1.1 christos return FALSE;
2592 1.1 christos }
2593 1.1 christos }
2594 1.1 christos
2595 1.1 christos return TRUE;
2596 1.1 christos }
2597 1.1 christos
2598 1.1 christos /* For cleanliness, and potentially faster dynamic loading, allocate
2599 1.1 christos external GOT entries first. */
2600 1.1 christos
2601 1.1 christos static bfd_boolean
2602 1.1 christos allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2603 1.1 christos void * data)
2604 1.1 christos {
2605 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2606 1.1 christos
2607 1.1 christos if ((dyn_i->want_got || dyn_i->want_gotx)
2608 1.1 christos && ! dyn_i->want_fptr
2609 1.1 christos && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2610 1.1 christos {
2611 1.1 christos dyn_i->got_offset = x->ofs;
2612 1.1 christos x->ofs += 8;
2613 1.1 christos }
2614 1.1 christos if (dyn_i->want_tprel)
2615 1.1 christos {
2616 1.1 christos dyn_i->tprel_offset = x->ofs;
2617 1.1 christos x->ofs += 8;
2618 1.1 christos }
2619 1.1 christos if (dyn_i->want_dtpmod)
2620 1.1 christos {
2621 1.1 christos if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2622 1.1 christos {
2623 1.1 christos dyn_i->dtpmod_offset = x->ofs;
2624 1.1 christos x->ofs += 8;
2625 1.1 christos }
2626 1.1 christos else
2627 1.1 christos {
2628 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2629 1.1 christos
2630 1.1 christos ia64_info = elfNN_ia64_hash_table (x->info);
2631 1.1 christos if (ia64_info == NULL)
2632 1.1 christos return FALSE;
2633 1.1 christos
2634 1.1 christos if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2635 1.1 christos {
2636 1.1 christos ia64_info->self_dtpmod_offset = x->ofs;
2637 1.1 christos x->ofs += 8;
2638 1.1 christos }
2639 1.1 christos dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2640 1.1 christos }
2641 1.1 christos }
2642 1.1 christos if (dyn_i->want_dtprel)
2643 1.1 christos {
2644 1.1 christos dyn_i->dtprel_offset = x->ofs;
2645 1.1 christos x->ofs += 8;
2646 1.1 christos }
2647 1.1 christos return TRUE;
2648 1.1 christos }
2649 1.1 christos
2650 1.1 christos /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2651 1.1 christos
2652 1.1 christos static bfd_boolean
2653 1.1 christos allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2654 1.1 christos void * data)
2655 1.1 christos {
2656 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2657 1.1 christos
2658 1.1 christos if (dyn_i->want_got
2659 1.1 christos && dyn_i->want_fptr
2660 1.1 christos && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
2661 1.1 christos {
2662 1.1 christos dyn_i->got_offset = x->ofs;
2663 1.1 christos x->ofs += 8;
2664 1.1 christos }
2665 1.1 christos return TRUE;
2666 1.1 christos }
2667 1.1 christos
2668 1.1 christos /* Lastly, allocate all the GOT entries for local data. */
2669 1.1 christos
2670 1.1 christos static bfd_boolean
2671 1.1 christos allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2672 1.1 christos void * data)
2673 1.1 christos {
2674 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2675 1.1 christos
2676 1.1 christos if ((dyn_i->want_got || dyn_i->want_gotx)
2677 1.1 christos && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2678 1.1 christos {
2679 1.1 christos dyn_i->got_offset = x->ofs;
2680 1.1 christos x->ofs += 8;
2681 1.1 christos }
2682 1.1 christos return TRUE;
2683 1.1 christos }
2684 1.1 christos
2685 1.1 christos /* Search for the index of a global symbol in it's defining object file. */
2686 1.1 christos
2687 1.1 christos static long
2688 1.1 christos global_sym_index (struct elf_link_hash_entry *h)
2689 1.1 christos {
2690 1.1 christos struct elf_link_hash_entry **p;
2691 1.1 christos bfd *obj;
2692 1.1 christos
2693 1.1 christos BFD_ASSERT (h->root.type == bfd_link_hash_defined
2694 1.1 christos || h->root.type == bfd_link_hash_defweak);
2695 1.1 christos
2696 1.1 christos obj = h->root.u.def.section->owner;
2697 1.1 christos for (p = elf_sym_hashes (obj); *p != h; ++p)
2698 1.1 christos continue;
2699 1.1 christos
2700 1.1 christos return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2701 1.1 christos }
2702 1.1 christos
2703 1.1 christos /* Allocate function descriptors. We can do these for every function
2704 1.1 christos in a main executable that is not exported. */
2705 1.1 christos
2706 1.1 christos static bfd_boolean
2707 1.1 christos allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data)
2708 1.1 christos {
2709 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2710 1.1 christos
2711 1.1 christos if (dyn_i->want_fptr)
2712 1.1 christos {
2713 1.1 christos struct elf_link_hash_entry *h = dyn_i->h;
2714 1.1 christos
2715 1.1 christos if (h)
2716 1.1 christos while (h->root.type == bfd_link_hash_indirect
2717 1.1 christos || h->root.type == bfd_link_hash_warning)
2718 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2719 1.1 christos
2720 1.1 christos if (!x->info->executable
2721 1.1 christos && (!h
2722 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2723 1.1 christos || (h->root.type != bfd_link_hash_undefweak
2724 1.1 christos && h->root.type != bfd_link_hash_undefined)))
2725 1.1 christos {
2726 1.1 christos if (h && h->dynindx == -1)
2727 1.1 christos {
2728 1.1 christos BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2729 1.1 christos || (h->root.type == bfd_link_hash_defweak));
2730 1.1 christos
2731 1.1 christos if (!bfd_elf_link_record_local_dynamic_symbol
2732 1.1 christos (x->info, h->root.u.def.section->owner,
2733 1.1 christos global_sym_index (h)))
2734 1.1 christos return FALSE;
2735 1.1 christos }
2736 1.1 christos
2737 1.1 christos dyn_i->want_fptr = 0;
2738 1.1 christos }
2739 1.1 christos else if (h == NULL || h->dynindx == -1)
2740 1.1 christos {
2741 1.1 christos dyn_i->fptr_offset = x->ofs;
2742 1.1 christos x->ofs += 16;
2743 1.1 christos }
2744 1.1 christos else
2745 1.1 christos dyn_i->want_fptr = 0;
2746 1.1 christos }
2747 1.1 christos return TRUE;
2748 1.1 christos }
2749 1.1 christos
2750 1.1 christos /* Allocate all the minimal PLT entries. */
2751 1.1 christos
2752 1.1 christos static bfd_boolean
2753 1.1 christos allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2754 1.1 christos void * data)
2755 1.1 christos {
2756 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2757 1.1 christos
2758 1.1 christos if (dyn_i->want_plt)
2759 1.1 christos {
2760 1.1 christos struct elf_link_hash_entry *h = dyn_i->h;
2761 1.1 christos
2762 1.1 christos if (h)
2763 1.1 christos while (h->root.type == bfd_link_hash_indirect
2764 1.1 christos || h->root.type == bfd_link_hash_warning)
2765 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2766 1.1 christos
2767 1.1 christos /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2768 1.1 christos if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2769 1.1 christos {
2770 1.1 christos bfd_size_type offset = x->ofs;
2771 1.1 christos if (offset == 0)
2772 1.1 christos offset = PLT_HEADER_SIZE;
2773 1.1 christos dyn_i->plt_offset = offset;
2774 1.1 christos x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2775 1.1 christos
2776 1.1 christos dyn_i->want_pltoff = 1;
2777 1.1 christos }
2778 1.1 christos else
2779 1.1 christos {
2780 1.1 christos dyn_i->want_plt = 0;
2781 1.1 christos dyn_i->want_plt2 = 0;
2782 1.1 christos }
2783 1.1 christos }
2784 1.1 christos return TRUE;
2785 1.1 christos }
2786 1.1 christos
2787 1.1 christos /* Allocate all the full PLT entries. */
2788 1.1 christos
2789 1.1 christos static bfd_boolean
2790 1.1 christos allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2791 1.1 christos void * data)
2792 1.1 christos {
2793 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2794 1.1 christos
2795 1.1 christos if (dyn_i->want_plt2)
2796 1.1 christos {
2797 1.1 christos struct elf_link_hash_entry *h = dyn_i->h;
2798 1.1 christos bfd_size_type ofs = x->ofs;
2799 1.1 christos
2800 1.1 christos dyn_i->plt2_offset = ofs;
2801 1.1 christos x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2802 1.1 christos
2803 1.1 christos while (h->root.type == bfd_link_hash_indirect
2804 1.1 christos || h->root.type == bfd_link_hash_warning)
2805 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2806 1.1 christos dyn_i->h->plt.offset = ofs;
2807 1.1 christos }
2808 1.1 christos return TRUE;
2809 1.1 christos }
2810 1.1 christos
2811 1.1 christos /* Allocate all the PLTOFF entries requested by relocations and
2812 1.1 christos plt entries. We can't share space with allocated FPTR entries,
2813 1.1 christos because the latter are not necessarily addressable by the GP.
2814 1.1 christos ??? Relaxation might be able to determine that they are. */
2815 1.1 christos
2816 1.1 christos static bfd_boolean
2817 1.1 christos allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2818 1.1 christos void * data)
2819 1.1 christos {
2820 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2821 1.1 christos
2822 1.1 christos if (dyn_i->want_pltoff)
2823 1.1 christos {
2824 1.1 christos dyn_i->pltoff_offset = x->ofs;
2825 1.1 christos x->ofs += 16;
2826 1.1 christos }
2827 1.1 christos return TRUE;
2828 1.1 christos }
2829 1.1 christos
2830 1.1 christos /* Allocate dynamic relocations for those symbols that turned out
2831 1.1 christos to be dynamic. */
2832 1.1 christos
2833 1.1 christos static bfd_boolean
2834 1.1 christos allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2835 1.1 christos void * data)
2836 1.1 christos {
2837 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2838 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2839 1.1 christos struct elfNN_ia64_dyn_reloc_entry *rent;
2840 1.1 christos bfd_boolean dynamic_symbol, shared, resolved_zero;
2841 1.1 christos
2842 1.1 christos ia64_info = elfNN_ia64_hash_table (x->info);
2843 1.1 christos if (ia64_info == NULL)
2844 1.1 christos return FALSE;
2845 1.1 christos
2846 1.1 christos /* Note that this can't be used in relation to FPTR relocs below. */
2847 1.1 christos dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2848 1.1 christos
2849 1.1 christos shared = x->info->shared;
2850 1.1 christos resolved_zero = (dyn_i->h
2851 1.1 christos && ELF_ST_VISIBILITY (dyn_i->h->other)
2852 1.1 christos && dyn_i->h->root.type == bfd_link_hash_undefweak);
2853 1.1 christos
2854 1.1 christos /* Take care of the GOT and PLT relocations. */
2855 1.1 christos
2856 1.1 christos if ((!resolved_zero
2857 1.1 christos && (dynamic_symbol || shared)
2858 1.1 christos && (dyn_i->want_got || dyn_i->want_gotx))
2859 1.1 christos || (dyn_i->want_ltoff_fptr
2860 1.1 christos && dyn_i->h
2861 1.1 christos && dyn_i->h->dynindx != -1))
2862 1.1 christos {
2863 1.1 christos if (!dyn_i->want_ltoff_fptr
2864 1.1 christos || !x->info->pie
2865 1.1 christos || dyn_i->h == NULL
2866 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak)
2867 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2868 1.1 christos }
2869 1.1 christos if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2870 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2871 1.1 christos if (dynamic_symbol && dyn_i->want_dtpmod)
2872 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2873 1.1 christos if (dynamic_symbol && dyn_i->want_dtprel)
2874 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2875 1.1 christos
2876 1.1 christos if (x->only_got)
2877 1.1 christos return TRUE;
2878 1.1 christos
2879 1.1 christos if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2880 1.1 christos {
2881 1.1 christos if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2882 1.1 christos ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2883 1.1 christos }
2884 1.1 christos
2885 1.1 christos if (!resolved_zero && dyn_i->want_pltoff)
2886 1.1 christos {
2887 1.1 christos bfd_size_type t = 0;
2888 1.1 christos
2889 1.1 christos /* Dynamic symbols get one IPLT relocation. Local symbols in
2890 1.1 christos shared libraries get two REL relocations. Local symbols in
2891 1.1 christos main applications get nothing. */
2892 1.1 christos if (dynamic_symbol)
2893 1.1 christos t = sizeof (ElfNN_External_Rela);
2894 1.1 christos else if (shared)
2895 1.1 christos t = 2 * sizeof (ElfNN_External_Rela);
2896 1.1 christos
2897 1.1 christos ia64_info->rel_pltoff_sec->size += t;
2898 1.1 christos }
2899 1.1 christos
2900 1.1 christos /* Take care of the normal data relocations. */
2901 1.1 christos
2902 1.1 christos for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2903 1.1 christos {
2904 1.1 christos int count = rent->count;
2905 1.1 christos
2906 1.1 christos switch (rent->type)
2907 1.1 christos {
2908 1.1 christos case R_IA64_FPTR32LSB:
2909 1.1 christos case R_IA64_FPTR64LSB:
2910 1.1 christos /* Allocate one iff !want_fptr and not PIE, which by this point
2911 1.1 christos will be true only if we're actually allocating one statically
2912 1.1 christos in the main executable. Position independent executables
2913 1.1 christos need a relative reloc. */
2914 1.1 christos if (dyn_i->want_fptr && !x->info->pie)
2915 1.1 christos continue;
2916 1.1 christos break;
2917 1.1 christos case R_IA64_PCREL32LSB:
2918 1.1 christos case R_IA64_PCREL64LSB:
2919 1.1 christos if (!dynamic_symbol)
2920 1.1 christos continue;
2921 1.1 christos break;
2922 1.1 christos case R_IA64_DIR32LSB:
2923 1.1 christos case R_IA64_DIR64LSB:
2924 1.1 christos if (!dynamic_symbol && !shared)
2925 1.1 christos continue;
2926 1.1 christos break;
2927 1.1 christos case R_IA64_IPLTLSB:
2928 1.1 christos if (!dynamic_symbol && !shared)
2929 1.1 christos continue;
2930 1.1 christos /* Use two REL relocations for IPLT relocations
2931 1.1 christos against local symbols. */
2932 1.1 christos if (!dynamic_symbol)
2933 1.1 christos count *= 2;
2934 1.1 christos break;
2935 1.1 christos case R_IA64_DTPREL32LSB:
2936 1.1 christos case R_IA64_TPREL64LSB:
2937 1.1 christos case R_IA64_DTPREL64LSB:
2938 1.1 christos case R_IA64_DTPMOD64LSB:
2939 1.1 christos break;
2940 1.1 christos default:
2941 1.1 christos abort ();
2942 1.1 christos }
2943 1.1 christos if (rent->reltext)
2944 1.1 christos ia64_info->reltext = 1;
2945 1.1 christos rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2946 1.1 christos }
2947 1.1 christos
2948 1.1 christos return TRUE;
2949 1.1 christos }
2950 1.1 christos
2951 1.1 christos static bfd_boolean
2952 1.1 christos elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2953 1.1 christos struct elf_link_hash_entry *h)
2954 1.1 christos {
2955 1.1 christos /* ??? Undefined symbols with PLT entries should be re-defined
2956 1.1 christos to be the PLT entry. */
2957 1.1 christos
2958 1.1 christos /* If this is a weak symbol, and there is a real definition, the
2959 1.1 christos processor independent code will have arranged for us to see the
2960 1.1 christos real definition first, and we can just use the same value. */
2961 1.1 christos if (h->u.weakdef != NULL)
2962 1.1 christos {
2963 1.1 christos BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2964 1.1 christos || h->u.weakdef->root.type == bfd_link_hash_defweak);
2965 1.1 christos h->root.u.def.section = h->u.weakdef->root.u.def.section;
2966 1.1 christos h->root.u.def.value = h->u.weakdef->root.u.def.value;
2967 1.1 christos return TRUE;
2968 1.1 christos }
2969 1.1 christos
2970 1.1 christos /* If this is a reference to a symbol defined by a dynamic object which
2971 1.1 christos is not a function, we might allocate the symbol in our .dynbss section
2972 1.1 christos and allocate a COPY dynamic relocation.
2973 1.1 christos
2974 1.1 christos But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2975 1.1 christos of hackery. */
2976 1.1 christos
2977 1.1 christos return TRUE;
2978 1.1 christos }
2979 1.1 christos
2980 1.1 christos static bfd_boolean
2981 1.1 christos elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2982 1.1 christos struct bfd_link_info *info)
2983 1.1 christos {
2984 1.1 christos struct elfNN_ia64_allocate_data data;
2985 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2986 1.1 christos asection *sec;
2987 1.1 christos bfd *dynobj;
2988 1.1 christos bfd_boolean relplt = FALSE;
2989 1.1 christos
2990 1.1 christos dynobj = elf_hash_table(info)->dynobj;
2991 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
2992 1.1 christos if (ia64_info == NULL)
2993 1.1 christos return FALSE;
2994 1.1 christos ia64_info->self_dtpmod_offset = (bfd_vma) -1;
2995 1.1 christos BFD_ASSERT(dynobj != NULL);
2996 1.1 christos data.info = info;
2997 1.1 christos
2998 1.1 christos /* Set the contents of the .interp section to the interpreter. */
2999 1.1 christos if (ia64_info->root.dynamic_sections_created
3000 1.1 christos && info->executable)
3001 1.1 christos {
3002 1.1 christos sec = bfd_get_linker_section (dynobj, ".interp");
3003 1.1 christos BFD_ASSERT (sec != NULL);
3004 1.1 christos sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3005 1.1 christos sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
3006 1.1 christos }
3007 1.1 christos
3008 1.1 christos /* Allocate the GOT entries. */
3009 1.1 christos
3010 1.1 christos if (ia64_info->root.sgot)
3011 1.1 christos {
3012 1.1 christos data.ofs = 0;
3013 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
3014 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
3015 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
3016 1.1 christos ia64_info->root.sgot->size = data.ofs;
3017 1.1 christos }
3018 1.1 christos
3019 1.1 christos /* Allocate the FPTR entries. */
3020 1.1 christos
3021 1.1 christos if (ia64_info->fptr_sec)
3022 1.1 christos {
3023 1.1 christos data.ofs = 0;
3024 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
3025 1.1 christos ia64_info->fptr_sec->size = data.ofs;
3026 1.1 christos }
3027 1.1 christos
3028 1.1 christos /* Now that we've seen all of the input files, we can decide which
3029 1.1 christos symbols need plt entries. Allocate the minimal PLT entries first.
3030 1.1 christos We do this even though dynamic_sections_created may be FALSE, because
3031 1.1 christos this has the side-effect of clearing want_plt and want_plt2. */
3032 1.1 christos
3033 1.1 christos data.ofs = 0;
3034 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
3035 1.1 christos
3036 1.1 christos ia64_info->minplt_entries = 0;
3037 1.1 christos if (data.ofs)
3038 1.1 christos {
3039 1.1 christos ia64_info->minplt_entries
3040 1.1 christos = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
3041 1.1 christos }
3042 1.1 christos
3043 1.1 christos /* Align the pointer for the plt2 entries. */
3044 1.1 christos data.ofs = (data.ofs + 31) & (bfd_vma) -32;
3045 1.1 christos
3046 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
3047 1.1 christos if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
3048 1.1 christos {
3049 1.1 christos /* FIXME: we always reserve the memory for dynamic linker even if
3050 1.1 christos there are no PLT entries since dynamic linker may assume the
3051 1.1 christos reserved memory always exists. */
3052 1.1 christos
3053 1.1 christos BFD_ASSERT (ia64_info->root.dynamic_sections_created);
3054 1.1 christos
3055 1.1 christos ia64_info->root.splt->size = data.ofs;
3056 1.1 christos
3057 1.1 christos /* If we've got a .plt, we need some extra memory for the dynamic
3058 1.1 christos linker. We stuff these in .got.plt. */
3059 1.1 christos sec = bfd_get_linker_section (dynobj, ".got.plt");
3060 1.1 christos sec->size = 8 * PLT_RESERVED_WORDS;
3061 1.1 christos }
3062 1.1 christos
3063 1.1 christos /* Allocate the PLTOFF entries. */
3064 1.1 christos
3065 1.1 christos if (ia64_info->pltoff_sec)
3066 1.1 christos {
3067 1.1 christos data.ofs = 0;
3068 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
3069 1.1 christos ia64_info->pltoff_sec->size = data.ofs;
3070 1.1 christos }
3071 1.1 christos
3072 1.1 christos if (ia64_info->root.dynamic_sections_created)
3073 1.1 christos {
3074 1.1 christos /* Allocate space for the dynamic relocations that turned out to be
3075 1.1 christos required. */
3076 1.1 christos
3077 1.1 christos if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
3078 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
3079 1.1 christos data.only_got = FALSE;
3080 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
3081 1.1 christos }
3082 1.1 christos
3083 1.1 christos /* We have now determined the sizes of the various dynamic sections.
3084 1.1 christos Allocate memory for them. */
3085 1.1 christos for (sec = dynobj->sections; sec != NULL; sec = sec->next)
3086 1.1 christos {
3087 1.1 christos bfd_boolean strip;
3088 1.1 christos
3089 1.1 christos if (!(sec->flags & SEC_LINKER_CREATED))
3090 1.1 christos continue;
3091 1.1 christos
3092 1.1 christos /* If we don't need this section, strip it from the output file.
3093 1.1 christos There were several sections primarily related to dynamic
3094 1.1 christos linking that must be create before the linker maps input
3095 1.1 christos sections to output sections. The linker does that before
3096 1.1 christos bfd_elf_size_dynamic_sections is called, and it is that
3097 1.1 christos function which decides whether anything needs to go into
3098 1.1 christos these sections. */
3099 1.1 christos
3100 1.1 christos strip = (sec->size == 0);
3101 1.1 christos
3102 1.1 christos if (sec == ia64_info->root.sgot)
3103 1.1 christos strip = FALSE;
3104 1.1 christos else if (sec == ia64_info->root.srelgot)
3105 1.1 christos {
3106 1.1 christos if (strip)
3107 1.1 christos ia64_info->root.srelgot = NULL;
3108 1.1 christos else
3109 1.1 christos /* We use the reloc_count field as a counter if we need to
3110 1.1 christos copy relocs into the output file. */
3111 1.1 christos sec->reloc_count = 0;
3112 1.1 christos }
3113 1.1 christos else if (sec == ia64_info->fptr_sec)
3114 1.1 christos {
3115 1.1 christos if (strip)
3116 1.1 christos ia64_info->fptr_sec = NULL;
3117 1.1 christos }
3118 1.1 christos else if (sec == ia64_info->rel_fptr_sec)
3119 1.1 christos {
3120 1.1 christos if (strip)
3121 1.1 christos ia64_info->rel_fptr_sec = NULL;
3122 1.1 christos else
3123 1.1 christos /* We use the reloc_count field as a counter if we need to
3124 1.1 christos copy relocs into the output file. */
3125 1.1 christos sec->reloc_count = 0;
3126 1.1 christos }
3127 1.1 christos else if (sec == ia64_info->root.splt)
3128 1.1 christos {
3129 1.1 christos if (strip)
3130 1.1 christos ia64_info->root.splt = NULL;
3131 1.1 christos }
3132 1.1 christos else if (sec == ia64_info->pltoff_sec)
3133 1.1 christos {
3134 1.1 christos if (strip)
3135 1.1 christos ia64_info->pltoff_sec = NULL;
3136 1.1 christos }
3137 1.1 christos else if (sec == ia64_info->rel_pltoff_sec)
3138 1.1 christos {
3139 1.1 christos if (strip)
3140 1.1 christos ia64_info->rel_pltoff_sec = NULL;
3141 1.1 christos else
3142 1.1 christos {
3143 1.1 christos relplt = TRUE;
3144 1.1 christos /* We use the reloc_count field as a counter if we need to
3145 1.1 christos copy relocs into the output file. */
3146 1.1 christos sec->reloc_count = 0;
3147 1.1 christos }
3148 1.1 christos }
3149 1.1 christos else
3150 1.1 christos {
3151 1.1 christos const char *name;
3152 1.1 christos
3153 1.1 christos /* It's OK to base decisions on the section name, because none
3154 1.1 christos of the dynobj section names depend upon the input files. */
3155 1.1 christos name = bfd_get_section_name (dynobj, sec);
3156 1.1 christos
3157 1.1 christos if (strcmp (name, ".got.plt") == 0)
3158 1.1 christos strip = FALSE;
3159 1.1 christos else if (CONST_STRNEQ (name, ".rel"))
3160 1.1 christos {
3161 1.1 christos if (!strip)
3162 1.1 christos {
3163 1.1 christos /* We use the reloc_count field as a counter if we need to
3164 1.1 christos copy relocs into the output file. */
3165 1.1 christos sec->reloc_count = 0;
3166 1.1 christos }
3167 1.1 christos }
3168 1.1 christos else
3169 1.1 christos continue;
3170 1.1 christos }
3171 1.1 christos
3172 1.1 christos if (strip)
3173 1.1 christos sec->flags |= SEC_EXCLUDE;
3174 1.1 christos else
3175 1.1 christos {
3176 1.1 christos /* Allocate memory for the section contents. */
3177 1.1 christos sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3178 1.1 christos if (sec->contents == NULL && sec->size != 0)
3179 1.1 christos return FALSE;
3180 1.1 christos }
3181 1.1 christos }
3182 1.1 christos
3183 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
3184 1.1 christos {
3185 1.1 christos /* Add some entries to the .dynamic section. We fill in the values
3186 1.1 christos later (in finish_dynamic_sections) but we must add the entries now
3187 1.1 christos so that we get the correct size for the .dynamic section. */
3188 1.1 christos
3189 1.1 christos if (info->executable)
3190 1.1 christos {
3191 1.1 christos /* The DT_DEBUG entry is filled in by the dynamic linker and used
3192 1.1 christos by the debugger. */
3193 1.1 christos #define add_dynamic_entry(TAG, VAL) \
3194 1.1 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3195 1.1 christos
3196 1.1 christos if (!add_dynamic_entry (DT_DEBUG, 0))
3197 1.1 christos return FALSE;
3198 1.1 christos }
3199 1.1 christos
3200 1.1 christos if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3201 1.1 christos return FALSE;
3202 1.1 christos if (!add_dynamic_entry (DT_PLTGOT, 0))
3203 1.1 christos return FALSE;
3204 1.1 christos
3205 1.1 christos if (relplt)
3206 1.1 christos {
3207 1.1 christos if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3208 1.1 christos || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3209 1.1 christos || !add_dynamic_entry (DT_JMPREL, 0))
3210 1.1 christos return FALSE;
3211 1.1 christos }
3212 1.1 christos
3213 1.1 christos if (!add_dynamic_entry (DT_RELA, 0)
3214 1.1 christos || !add_dynamic_entry (DT_RELASZ, 0)
3215 1.1 christos || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3216 1.1 christos return FALSE;
3217 1.1 christos
3218 1.1 christos if (ia64_info->reltext)
3219 1.1 christos {
3220 1.1 christos if (!add_dynamic_entry (DT_TEXTREL, 0))
3221 1.1 christos return FALSE;
3222 1.1 christos info->flags |= DF_TEXTREL;
3223 1.1 christos }
3224 1.1 christos }
3225 1.1 christos
3226 1.1 christos /* ??? Perhaps force __gp local. */
3227 1.1 christos
3228 1.1 christos return TRUE;
3229 1.1 christos }
3230 1.1 christos
3231 1.1 christos static void
3232 1.1 christos elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info,
3233 1.1 christos asection *sec, asection *srel,
3234 1.1 christos bfd_vma offset, unsigned int type,
3235 1.1 christos long dynindx, bfd_vma addend)
3236 1.1 christos {
3237 1.1 christos Elf_Internal_Rela outrel;
3238 1.1 christos bfd_byte *loc;
3239 1.1 christos
3240 1.1 christos BFD_ASSERT (dynindx != -1);
3241 1.1 christos outrel.r_info = ELFNN_R_INFO (dynindx, type);
3242 1.1 christos outrel.r_addend = addend;
3243 1.1 christos outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3244 1.1 christos if (outrel.r_offset >= (bfd_vma) -2)
3245 1.1 christos {
3246 1.1 christos /* Run for the hills. We shouldn't be outputting a relocation
3247 1.1 christos for this. So do what everyone else does and output a no-op. */
3248 1.1 christos outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3249 1.1 christos outrel.r_addend = 0;
3250 1.1 christos outrel.r_offset = 0;
3251 1.1 christos }
3252 1.1 christos else
3253 1.1 christos outrel.r_offset += sec->output_section->vma + sec->output_offset;
3254 1.1 christos
3255 1.1 christos loc = srel->contents;
3256 1.1 christos loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3257 1.1 christos bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3258 1.1 christos BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3259 1.1 christos }
3260 1.1 christos
3261 1.1 christos /* Store an entry for target address TARGET_ADDR in the linkage table
3262 1.1 christos and return the gp-relative address of the linkage table entry. */
3263 1.1 christos
3264 1.1 christos static bfd_vma
3265 1.1 christos set_got_entry (bfd *abfd, struct bfd_link_info *info,
3266 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i,
3267 1.1 christos long dynindx, bfd_vma addend, bfd_vma value,
3268 1.1 christos unsigned int dyn_r_type)
3269 1.1 christos {
3270 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3271 1.1 christos asection *got_sec;
3272 1.1 christos bfd_boolean done;
3273 1.1 christos bfd_vma got_offset;
3274 1.1 christos
3275 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3276 1.1 christos if (ia64_info == NULL)
3277 1.1 christos return 0;
3278 1.1 christos
3279 1.1 christos got_sec = ia64_info->root.sgot;
3280 1.1 christos
3281 1.1 christos switch (dyn_r_type)
3282 1.1 christos {
3283 1.1 christos case R_IA64_TPREL64LSB:
3284 1.1 christos done = dyn_i->tprel_done;
3285 1.1 christos dyn_i->tprel_done = TRUE;
3286 1.1 christos got_offset = dyn_i->tprel_offset;
3287 1.1 christos break;
3288 1.1 christos case R_IA64_DTPMOD64LSB:
3289 1.1 christos if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3290 1.1 christos {
3291 1.1 christos done = dyn_i->dtpmod_done;
3292 1.1 christos dyn_i->dtpmod_done = TRUE;
3293 1.1 christos }
3294 1.1 christos else
3295 1.1 christos {
3296 1.1 christos done = ia64_info->self_dtpmod_done;
3297 1.1 christos ia64_info->self_dtpmod_done = TRUE;
3298 1.1 christos dynindx = 0;
3299 1.1 christos }
3300 1.1 christos got_offset = dyn_i->dtpmod_offset;
3301 1.1 christos break;
3302 1.1 christos case R_IA64_DTPREL32LSB:
3303 1.1 christos case R_IA64_DTPREL64LSB:
3304 1.1 christos done = dyn_i->dtprel_done;
3305 1.1 christos dyn_i->dtprel_done = TRUE;
3306 1.1 christos got_offset = dyn_i->dtprel_offset;
3307 1.1 christos break;
3308 1.1 christos default:
3309 1.1 christos done = dyn_i->got_done;
3310 1.1 christos dyn_i->got_done = TRUE;
3311 1.1 christos got_offset = dyn_i->got_offset;
3312 1.1 christos break;
3313 1.1 christos }
3314 1.1 christos
3315 1.1 christos BFD_ASSERT ((got_offset & 7) == 0);
3316 1.1 christos
3317 1.1 christos if (! done)
3318 1.1 christos {
3319 1.1 christos /* Store the target address in the linkage table entry. */
3320 1.1 christos bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3321 1.1 christos
3322 1.1 christos /* Install a dynamic relocation if needed. */
3323 1.1 christos if (((info->shared
3324 1.1 christos && (!dyn_i->h
3325 1.1 christos || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3326 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak)
3327 1.1 christos && dyn_r_type != R_IA64_DTPREL32LSB
3328 1.1 christos && dyn_r_type != R_IA64_DTPREL64LSB)
3329 1.1 christos || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3330 1.1 christos || (dynindx != -1
3331 1.1 christos && (dyn_r_type == R_IA64_FPTR32LSB
3332 1.1 christos || dyn_r_type == R_IA64_FPTR64LSB)))
3333 1.1 christos && (!dyn_i->want_ltoff_fptr
3334 1.1 christos || !info->pie
3335 1.1 christos || !dyn_i->h
3336 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak))
3337 1.1 christos {
3338 1.1 christos if (dynindx == -1
3339 1.1 christos && dyn_r_type != R_IA64_TPREL64LSB
3340 1.1 christos && dyn_r_type != R_IA64_DTPMOD64LSB
3341 1.1 christos && dyn_r_type != R_IA64_DTPREL32LSB
3342 1.1 christos && dyn_r_type != R_IA64_DTPREL64LSB)
3343 1.1 christos {
3344 1.1 christos dyn_r_type = R_IA64_RELNNLSB;
3345 1.1 christos dynindx = 0;
3346 1.1 christos addend = value;
3347 1.1 christos }
3348 1.1 christos
3349 1.1 christos if (bfd_big_endian (abfd))
3350 1.1 christos {
3351 1.1 christos switch (dyn_r_type)
3352 1.1 christos {
3353 1.1 christos case R_IA64_REL32LSB:
3354 1.1 christos dyn_r_type = R_IA64_REL32MSB;
3355 1.1 christos break;
3356 1.1 christos case R_IA64_DIR32LSB:
3357 1.1 christos dyn_r_type = R_IA64_DIR32MSB;
3358 1.1 christos break;
3359 1.1 christos case R_IA64_FPTR32LSB:
3360 1.1 christos dyn_r_type = R_IA64_FPTR32MSB;
3361 1.1 christos break;
3362 1.1 christos case R_IA64_DTPREL32LSB:
3363 1.1 christos dyn_r_type = R_IA64_DTPREL32MSB;
3364 1.1 christos break;
3365 1.1 christos case R_IA64_REL64LSB:
3366 1.1 christos dyn_r_type = R_IA64_REL64MSB;
3367 1.1 christos break;
3368 1.1 christos case R_IA64_DIR64LSB:
3369 1.1 christos dyn_r_type = R_IA64_DIR64MSB;
3370 1.1 christos break;
3371 1.1 christos case R_IA64_FPTR64LSB:
3372 1.1 christos dyn_r_type = R_IA64_FPTR64MSB;
3373 1.1 christos break;
3374 1.1 christos case R_IA64_TPREL64LSB:
3375 1.1 christos dyn_r_type = R_IA64_TPREL64MSB;
3376 1.1 christos break;
3377 1.1 christos case R_IA64_DTPMOD64LSB:
3378 1.1 christos dyn_r_type = R_IA64_DTPMOD64MSB;
3379 1.1 christos break;
3380 1.1 christos case R_IA64_DTPREL64LSB:
3381 1.1 christos dyn_r_type = R_IA64_DTPREL64MSB;
3382 1.1 christos break;
3383 1.1 christos default:
3384 1.1 christos BFD_ASSERT (FALSE);
3385 1.1 christos break;
3386 1.1 christos }
3387 1.1 christos }
3388 1.1 christos
3389 1.1 christos elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3390 1.1 christos ia64_info->root.srelgot,
3391 1.1 christos got_offset, dyn_r_type,
3392 1.1 christos dynindx, addend);
3393 1.1 christos }
3394 1.1 christos }
3395 1.1 christos
3396 1.1 christos /* Return the address of the linkage table entry. */
3397 1.1 christos value = (got_sec->output_section->vma
3398 1.1 christos + got_sec->output_offset
3399 1.1 christos + got_offset);
3400 1.1 christos
3401 1.1 christos return value;
3402 1.1 christos }
3403 1.1 christos
3404 1.1 christos /* Fill in a function descriptor consisting of the function's code
3405 1.1 christos address and its global pointer. Return the descriptor's address. */
3406 1.1 christos
3407 1.1 christos static bfd_vma
3408 1.1 christos set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
3409 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i,
3410 1.1 christos bfd_vma value)
3411 1.1 christos {
3412 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3413 1.1 christos asection *fptr_sec;
3414 1.1 christos
3415 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3416 1.1 christos if (ia64_info == NULL)
3417 1.1 christos return 0;
3418 1.1 christos
3419 1.1 christos fptr_sec = ia64_info->fptr_sec;
3420 1.1 christos
3421 1.1 christos if (!dyn_i->fptr_done)
3422 1.1 christos {
3423 1.1 christos dyn_i->fptr_done = 1;
3424 1.1 christos
3425 1.1 christos /* Fill in the function descriptor. */
3426 1.1 christos bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3427 1.1 christos bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3428 1.1 christos fptr_sec->contents + dyn_i->fptr_offset + 8);
3429 1.1 christos if (ia64_info->rel_fptr_sec)
3430 1.1 christos {
3431 1.1 christos Elf_Internal_Rela outrel;
3432 1.1 christos bfd_byte *loc;
3433 1.1 christos
3434 1.1 christos if (bfd_little_endian (abfd))
3435 1.1 christos outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3436 1.1 christos else
3437 1.1 christos outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3438 1.1 christos outrel.r_addend = value;
3439 1.1 christos outrel.r_offset = (fptr_sec->output_section->vma
3440 1.1 christos + fptr_sec->output_offset
3441 1.1 christos + dyn_i->fptr_offset);
3442 1.1 christos loc = ia64_info->rel_fptr_sec->contents;
3443 1.1 christos loc += ia64_info->rel_fptr_sec->reloc_count++
3444 1.1 christos * sizeof (ElfNN_External_Rela);
3445 1.1 christos bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3446 1.1 christos }
3447 1.1 christos }
3448 1.1 christos
3449 1.1 christos /* Return the descriptor's address. */
3450 1.1 christos value = (fptr_sec->output_section->vma
3451 1.1 christos + fptr_sec->output_offset
3452 1.1 christos + dyn_i->fptr_offset);
3453 1.1 christos
3454 1.1 christos return value;
3455 1.1 christos }
3456 1.1 christos
3457 1.1 christos /* Fill in a PLTOFF entry consisting of the function's code address
3458 1.1 christos and its global pointer. Return the descriptor's address. */
3459 1.1 christos
3460 1.1 christos static bfd_vma
3461 1.1 christos set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
3462 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i,
3463 1.1 christos bfd_vma value, bfd_boolean is_plt)
3464 1.1 christos {
3465 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3466 1.1 christos asection *pltoff_sec;
3467 1.1 christos
3468 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3469 1.1 christos if (ia64_info == NULL)
3470 1.1 christos return 0;
3471 1.1 christos
3472 1.1 christos pltoff_sec = ia64_info->pltoff_sec;
3473 1.1 christos
3474 1.1 christos /* Don't do anything if this symbol uses a real PLT entry. In
3475 1.1 christos that case, we'll fill this in during finish_dynamic_symbol. */
3476 1.1 christos if ((! dyn_i->want_plt || is_plt)
3477 1.1 christos && !dyn_i->pltoff_done)
3478 1.1 christos {
3479 1.1 christos bfd_vma gp = _bfd_get_gp_value (abfd);
3480 1.1 christos
3481 1.1 christos /* Fill in the function descriptor. */
3482 1.1 christos bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3483 1.1 christos bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3484 1.1 christos
3485 1.1 christos /* Install dynamic relocations if needed. */
3486 1.1 christos if (!is_plt
3487 1.1 christos && info->shared
3488 1.1 christos && (!dyn_i->h
3489 1.1 christos || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3490 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak))
3491 1.1 christos {
3492 1.1 christos unsigned int dyn_r_type;
3493 1.1 christos
3494 1.1 christos if (bfd_big_endian (abfd))
3495 1.1 christos dyn_r_type = R_IA64_RELNNMSB;
3496 1.1 christos else
3497 1.1 christos dyn_r_type = R_IA64_RELNNLSB;
3498 1.1 christos
3499 1.1 christos elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3500 1.1 christos ia64_info->rel_pltoff_sec,
3501 1.1 christos dyn_i->pltoff_offset,
3502 1.1 christos dyn_r_type, 0, value);
3503 1.1 christos elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3504 1.1 christos ia64_info->rel_pltoff_sec,
3505 1.1 christos dyn_i->pltoff_offset + ARCH_SIZE / 8,
3506 1.1 christos dyn_r_type, 0, gp);
3507 1.1 christos }
3508 1.1 christos
3509 1.1 christos dyn_i->pltoff_done = 1;
3510 1.1 christos }
3511 1.1 christos
3512 1.1 christos /* Return the descriptor's address. */
3513 1.1 christos value = (pltoff_sec->output_section->vma
3514 1.1 christos + pltoff_sec->output_offset
3515 1.1 christos + dyn_i->pltoff_offset);
3516 1.1 christos
3517 1.1 christos return value;
3518 1.1 christos }
3519 1.1 christos
3520 1.1 christos /* Return the base VMA address which should be subtracted from real addresses
3521 1.1 christos when resolving @tprel() relocation.
3522 1.1 christos Main program TLS (whose template starts at PT_TLS p_vaddr)
3523 1.1 christos is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3524 1.1 christos
3525 1.1 christos static bfd_vma
3526 1.1 christos elfNN_ia64_tprel_base (struct bfd_link_info *info)
3527 1.1 christos {
3528 1.1 christos asection *tls_sec = elf_hash_table (info)->tls_sec;
3529 1.1 christos return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
3530 1.1 christos tls_sec->alignment_power);
3531 1.1 christos }
3532 1.1 christos
3533 1.1 christos /* Return the base VMA address which should be subtracted from real addresses
3534 1.1 christos when resolving @dtprel() relocation.
3535 1.1 christos This is PT_TLS segment p_vaddr. */
3536 1.1 christos
3537 1.1 christos static bfd_vma
3538 1.1 christos elfNN_ia64_dtprel_base (struct bfd_link_info *info)
3539 1.1 christos {
3540 1.1 christos return elf_hash_table (info)->tls_sec->vma;
3541 1.1 christos }
3542 1.1 christos
3543 1.1 christos /* Called through qsort to sort the .IA_64.unwind section during a
3544 1.1 christos non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3545 1.1 christos to the output bfd so we can do proper endianness frobbing. */
3546 1.1 christos
3547 1.1 christos static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3548 1.1 christos
3549 1.1 christos static int
3550 1.1 christos elfNN_ia64_unwind_entry_compare (const void * a, const void * b)
3551 1.1 christos {
3552 1.1 christos bfd_vma av, bv;
3553 1.1 christos
3554 1.1 christos av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3555 1.1 christos bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3556 1.1 christos
3557 1.1 christos return (av < bv ? -1 : av > bv ? 1 : 0);
3558 1.1 christos }
3559 1.1 christos
3560 1.1 christos /* Make sure we've got ourselves a nice fat __gp value. */
3561 1.1 christos static bfd_boolean
3562 1.1 christos elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final)
3563 1.1 christos {
3564 1.1 christos bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3565 1.1 christos bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3566 1.1 christos struct elf_link_hash_entry *gp;
3567 1.1 christos bfd_vma gp_val;
3568 1.1 christos asection *os;
3569 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3570 1.1 christos
3571 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3572 1.1 christos if (ia64_info == NULL)
3573 1.1 christos return FALSE;
3574 1.1 christos
3575 1.1 christos /* Find the min and max vma of all sections marked short. Also collect
3576 1.1 christos min and max vma of any type, for use in selecting a nice gp. */
3577 1.1 christos for (os = abfd->sections; os ; os = os->next)
3578 1.1 christos {
3579 1.1 christos bfd_vma lo, hi;
3580 1.1 christos
3581 1.1 christos if ((os->flags & SEC_ALLOC) == 0)
3582 1.1 christos continue;
3583 1.1 christos
3584 1.1 christos lo = os->vma;
3585 1.1 christos /* When this function is called from elfNN_ia64_final_link
3586 1.1 christos the correct value to use is os->size. When called from
3587 1.1 christos elfNN_ia64_relax_section we are in the middle of section
3588 1.1 christos sizing; some sections will already have os->size set, others
3589 1.1 christos will have os->size zero and os->rawsize the previous size. */
3590 1.1 christos hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
3591 1.1 christos if (hi < lo)
3592 1.1 christos hi = (bfd_vma) -1;
3593 1.1 christos
3594 1.1 christos if (min_vma > lo)
3595 1.1 christos min_vma = lo;
3596 1.1 christos if (max_vma < hi)
3597 1.1 christos max_vma = hi;
3598 1.1 christos if (os->flags & SEC_SMALL_DATA)
3599 1.1 christos {
3600 1.1 christos if (min_short_vma > lo)
3601 1.1 christos min_short_vma = lo;
3602 1.1 christos if (max_short_vma < hi)
3603 1.1 christos max_short_vma = hi;
3604 1.1 christos }
3605 1.1 christos }
3606 1.1 christos
3607 1.1 christos if (ia64_info->min_short_sec)
3608 1.1 christos {
3609 1.1 christos if (min_short_vma
3610 1.1 christos > (ia64_info->min_short_sec->vma
3611 1.1 christos + ia64_info->min_short_offset))
3612 1.1 christos min_short_vma = (ia64_info->min_short_sec->vma
3613 1.1 christos + ia64_info->min_short_offset);
3614 1.1 christos if (max_short_vma
3615 1.1 christos < (ia64_info->max_short_sec->vma
3616 1.1 christos + ia64_info->max_short_offset))
3617 1.1 christos max_short_vma = (ia64_info->max_short_sec->vma
3618 1.1 christos + ia64_info->max_short_offset);
3619 1.1 christos }
3620 1.1 christos
3621 1.1 christos /* See if the user wants to force a value. */
3622 1.1 christos gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3623 1.1 christos FALSE, FALSE);
3624 1.1 christos
3625 1.1 christos if (gp
3626 1.1 christos && (gp->root.type == bfd_link_hash_defined
3627 1.1 christos || gp->root.type == bfd_link_hash_defweak))
3628 1.1 christos {
3629 1.1 christos asection *gp_sec = gp->root.u.def.section;
3630 1.1 christos gp_val = (gp->root.u.def.value
3631 1.1 christos + gp_sec->output_section->vma
3632 1.1 christos + gp_sec->output_offset);
3633 1.1 christos }
3634 1.1 christos else
3635 1.1 christos {
3636 1.1 christos /* Pick a sensible value. */
3637 1.1 christos
3638 1.1 christos if (ia64_info->min_short_sec)
3639 1.1 christos {
3640 1.1 christos bfd_vma short_range = max_short_vma - min_short_vma;
3641 1.1 christos
3642 1.1 christos /* If min_short_sec is set, pick one in the middle bewteen
3643 1.1 christos min_short_vma and max_short_vma. */
3644 1.1 christos if (short_range >= 0x400000)
3645 1.1 christos goto overflow;
3646 1.1 christos gp_val = min_short_vma + short_range / 2;
3647 1.1 christos }
3648 1.1 christos else
3649 1.1 christos {
3650 1.1 christos asection *got_sec = ia64_info->root.sgot;
3651 1.1 christos
3652 1.1 christos /* Start with just the address of the .got. */
3653 1.1 christos if (got_sec)
3654 1.1 christos gp_val = got_sec->output_section->vma;
3655 1.1 christos else if (max_short_vma != 0)
3656 1.1 christos gp_val = min_short_vma;
3657 1.1 christos else if (max_vma - min_vma < 0x200000)
3658 1.1 christos gp_val = min_vma;
3659 1.1 christos else
3660 1.1 christos gp_val = max_vma - 0x200000 + 8;
3661 1.1 christos }
3662 1.1 christos
3663 1.1 christos /* If it is possible to address the entire image, but we
3664 1.1 christos don't with the choice above, adjust. */
3665 1.1 christos if (max_vma - min_vma < 0x400000
3666 1.1 christos && (max_vma - gp_val >= 0x200000
3667 1.1 christos || gp_val - min_vma > 0x200000))
3668 1.1 christos gp_val = min_vma + 0x200000;
3669 1.1 christos else if (max_short_vma != 0)
3670 1.1 christos {
3671 1.1 christos /* If we don't cover all the short data, adjust. */
3672 1.1 christos if (max_short_vma - gp_val >= 0x200000)
3673 1.1 christos gp_val = min_short_vma + 0x200000;
3674 1.1 christos
3675 1.1 christos /* If we're addressing stuff past the end, adjust back. */
3676 1.1 christos if (gp_val > max_vma)
3677 1.1 christos gp_val = max_vma - 0x200000 + 8;
3678 1.1 christos }
3679 1.1 christos }
3680 1.1 christos
3681 1.1 christos /* Validate whether all SHF_IA_64_SHORT sections are within
3682 1.1 christos range of the chosen GP. */
3683 1.1 christos
3684 1.1 christos if (max_short_vma != 0)
3685 1.1 christos {
3686 1.1 christos if (max_short_vma - min_short_vma >= 0x400000)
3687 1.1 christos {
3688 1.1 christos overflow:
3689 1.1 christos (*_bfd_error_handler)
3690 1.1 christos (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3691 1.1 christos bfd_get_filename (abfd),
3692 1.1 christos (unsigned long) (max_short_vma - min_short_vma));
3693 1.1 christos return FALSE;
3694 1.1 christos }
3695 1.1 christos else if ((gp_val > min_short_vma
3696 1.1 christos && gp_val - min_short_vma > 0x200000)
3697 1.1 christos || (gp_val < max_short_vma
3698 1.1 christos && max_short_vma - gp_val >= 0x200000))
3699 1.1 christos {
3700 1.1 christos (*_bfd_error_handler)
3701 1.1 christos (_("%s: __gp does not cover short data segment"),
3702 1.1 christos bfd_get_filename (abfd));
3703 1.1 christos return FALSE;
3704 1.1 christos }
3705 1.1 christos }
3706 1.1 christos
3707 1.1 christos _bfd_set_gp_value (abfd, gp_val);
3708 1.1 christos
3709 1.1 christos return TRUE;
3710 1.1 christos }
3711 1.1 christos
3712 1.1 christos static bfd_boolean
3713 1.1 christos elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
3714 1.1 christos {
3715 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3716 1.1 christos asection *unwind_output_sec;
3717 1.1 christos
3718 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3719 1.1 christos if (ia64_info == NULL)
3720 1.1 christos return FALSE;
3721 1.1 christos
3722 1.1 christos /* Make sure we've got ourselves a nice fat __gp value. */
3723 1.1 christos if (!info->relocatable)
3724 1.1 christos {
3725 1.1 christos bfd_vma gp_val;
3726 1.1 christos struct elf_link_hash_entry *gp;
3727 1.1 christos
3728 1.1 christos /* We assume after gp is set, section size will only decrease. We
3729 1.1 christos need to adjust gp for it. */
3730 1.1 christos _bfd_set_gp_value (abfd, 0);
3731 1.1 christos if (! elfNN_ia64_choose_gp (abfd, info, TRUE))
3732 1.1 christos return FALSE;
3733 1.1 christos gp_val = _bfd_get_gp_value (abfd);
3734 1.1 christos
3735 1.1 christos gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3736 1.1 christos FALSE, FALSE);
3737 1.1 christos if (gp)
3738 1.1 christos {
3739 1.1 christos gp->root.type = bfd_link_hash_defined;
3740 1.1 christos gp->root.u.def.value = gp_val;
3741 1.1 christos gp->root.u.def.section = bfd_abs_section_ptr;
3742 1.1 christos }
3743 1.1 christos }
3744 1.1 christos
3745 1.1 christos /* If we're producing a final executable, we need to sort the contents
3746 1.1 christos of the .IA_64.unwind section. Force this section to be relocated
3747 1.1 christos into memory rather than written immediately to the output file. */
3748 1.1 christos unwind_output_sec = NULL;
3749 1.1 christos if (!info->relocatable)
3750 1.1 christos {
3751 1.1 christos asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3752 1.1 christos if (s)
3753 1.1 christos {
3754 1.1 christos unwind_output_sec = s->output_section;
3755 1.1 christos unwind_output_sec->contents
3756 1.1 christos = bfd_malloc (unwind_output_sec->size);
3757 1.1 christos if (unwind_output_sec->contents == NULL)
3758 1.1 christos return FALSE;
3759 1.1 christos }
3760 1.1 christos }
3761 1.1 christos
3762 1.1 christos /* Invoke the regular ELF backend linker to do all the work. */
3763 1.1 christos if (!bfd_elf_final_link (abfd, info))
3764 1.1 christos return FALSE;
3765 1.1 christos
3766 1.1 christos if (unwind_output_sec)
3767 1.1 christos {
3768 1.1 christos elfNN_ia64_unwind_entry_compare_bfd = abfd;
3769 1.1 christos qsort (unwind_output_sec->contents,
3770 1.1 christos (size_t) (unwind_output_sec->size / 24),
3771 1.1 christos 24,
3772 1.1 christos elfNN_ia64_unwind_entry_compare);
3773 1.1 christos
3774 1.1 christos if (! bfd_set_section_contents (abfd, unwind_output_sec,
3775 1.1 christos unwind_output_sec->contents, (bfd_vma) 0,
3776 1.1 christos unwind_output_sec->size))
3777 1.1 christos return FALSE;
3778 1.1 christos }
3779 1.1 christos
3780 1.1 christos return TRUE;
3781 1.1 christos }
3782 1.1 christos
3783 1.1 christos static bfd_boolean
3784 1.1 christos elfNN_ia64_relocate_section (bfd *output_bfd,
3785 1.1 christos struct bfd_link_info *info,
3786 1.1 christos bfd *input_bfd,
3787 1.1 christos asection *input_section,
3788 1.1 christos bfd_byte *contents,
3789 1.1 christos Elf_Internal_Rela *relocs,
3790 1.1 christos Elf_Internal_Sym *local_syms,
3791 1.1 christos asection **local_sections)
3792 1.1 christos {
3793 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3794 1.1 christos Elf_Internal_Shdr *symtab_hdr;
3795 1.1 christos Elf_Internal_Rela *rel;
3796 1.1 christos Elf_Internal_Rela *relend;
3797 1.1 christos asection *srel;
3798 1.1 christos bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3799 1.1 christos bfd_vma gp_val;
3800 1.1 christos
3801 1.1 christos symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3802 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3803 1.1 christos if (ia64_info == NULL)
3804 1.1 christos return FALSE;
3805 1.1 christos
3806 1.1 christos /* Infect various flags from the input section to the output section. */
3807 1.1 christos if (info->relocatable)
3808 1.1 christos {
3809 1.1 christos bfd_vma flags;
3810 1.1 christos
3811 1.1 christos flags = elf_section_data(input_section)->this_hdr.sh_flags;
3812 1.1 christos flags &= SHF_IA_64_NORECOV;
3813 1.1 christos
3814 1.1 christos elf_section_data(input_section->output_section)
3815 1.1 christos ->this_hdr.sh_flags |= flags;
3816 1.1 christos }
3817 1.1 christos
3818 1.1 christos gp_val = _bfd_get_gp_value (output_bfd);
3819 1.1 christos srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3820 1.1 christos
3821 1.1 christos rel = relocs;
3822 1.1 christos relend = relocs + input_section->reloc_count;
3823 1.1 christos for (; rel < relend; ++rel)
3824 1.1 christos {
3825 1.1 christos struct elf_link_hash_entry *h;
3826 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
3827 1.1 christos bfd_reloc_status_type r;
3828 1.1 christos reloc_howto_type *howto;
3829 1.1 christos unsigned long r_symndx;
3830 1.1 christos Elf_Internal_Sym *sym;
3831 1.1 christos unsigned int r_type;
3832 1.1 christos bfd_vma value;
3833 1.1 christos asection *sym_sec;
3834 1.1 christos bfd_byte *hit_addr;
3835 1.1 christos bfd_boolean dynamic_symbol_p;
3836 1.1 christos bfd_boolean undef_weak_ref;
3837 1.1 christos
3838 1.1 christos r_type = ELFNN_R_TYPE (rel->r_info);
3839 1.1 christos if (r_type > R_IA64_MAX_RELOC_CODE)
3840 1.1 christos {
3841 1.1 christos (*_bfd_error_handler)
3842 1.1 christos (_("%B: unknown relocation type %d"),
3843 1.1 christos input_bfd, (int) r_type);
3844 1.1 christos bfd_set_error (bfd_error_bad_value);
3845 1.1 christos ret_val = FALSE;
3846 1.1 christos continue;
3847 1.1 christos }
3848 1.1 christos
3849 1.1 christos howto = ia64_elf_lookup_howto (r_type);
3850 1.1 christos r_symndx = ELFNN_R_SYM (rel->r_info);
3851 1.1 christos h = NULL;
3852 1.1 christos sym = NULL;
3853 1.1 christos sym_sec = NULL;
3854 1.1 christos undef_weak_ref = FALSE;
3855 1.1 christos
3856 1.1 christos if (r_symndx < symtab_hdr->sh_info)
3857 1.1 christos {
3858 1.1 christos /* Reloc against local symbol. */
3859 1.1 christos asection *msec;
3860 1.1 christos sym = local_syms + r_symndx;
3861 1.1 christos sym_sec = local_sections[r_symndx];
3862 1.1 christos msec = sym_sec;
3863 1.1 christos value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3864 1.1 christos if (!info->relocatable
3865 1.1 christos && (sym_sec->flags & SEC_MERGE) != 0
3866 1.1 christos && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3867 1.1 christos && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
3868 1.1 christos {
3869 1.1 christos struct elfNN_ia64_local_hash_entry *loc_h;
3870 1.1 christos
3871 1.1 christos loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3872 1.1 christos if (loc_h && ! loc_h->sec_merge_done)
3873 1.1 christos {
3874 1.1 christos struct elfNN_ia64_dyn_sym_info *dynent;
3875 1.1 christos unsigned int count;
3876 1.1 christos
3877 1.1 christos for (count = loc_h->count, dynent = loc_h->info;
3878 1.1 christos count != 0;
3879 1.1 christos count--, dynent++)
3880 1.1 christos {
3881 1.1 christos msec = sym_sec;
3882 1.1 christos dynent->addend =
3883 1.1 christos _bfd_merged_section_offset (output_bfd, &msec,
3884 1.1 christos elf_section_data (msec)->
3885 1.1 christos sec_info,
3886 1.1 christos sym->st_value
3887 1.1 christos + dynent->addend);
3888 1.1 christos dynent->addend -= sym->st_value;
3889 1.1 christos dynent->addend += msec->output_section->vma
3890 1.1 christos + msec->output_offset
3891 1.1 christos - sym_sec->output_section->vma
3892 1.1 christos - sym_sec->output_offset;
3893 1.1 christos }
3894 1.1 christos
3895 1.1 christos /* We may have introduced duplicated entries. We need
3896 1.1 christos to remove them properly. */
3897 1.1 christos count = sort_dyn_sym_info (loc_h->info, loc_h->count);
3898 1.1 christos if (count != loc_h->count)
3899 1.1 christos {
3900 1.1 christos loc_h->count = count;
3901 1.1 christos loc_h->sorted_count = count;
3902 1.1 christos }
3903 1.1 christos
3904 1.1 christos loc_h->sec_merge_done = 1;
3905 1.1.1.2 christos }
3906 1.1 christos }
3907 1.1 christos }
3908 1.1 christos else
3909 1.1 christos {
3910 1.1 christos bfd_boolean unresolved_reloc;
3911 1.1.1.2 christos bfd_boolean warned, ignored;
3912 1.1 christos struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3913 1.1 christos
3914 1.1 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3915 1.1.1.2 christos r_symndx, symtab_hdr, sym_hashes,
3916 1.1 christos h, sym_sec, value,
3917 1.1 christos unresolved_reloc, warned, ignored);
3918 1.1 christos
3919 1.1 christos if (h->root.type == bfd_link_hash_undefweak)
3920 1.1 christos undef_weak_ref = TRUE;
3921 1.1 christos else if (warned || (ignored && info->executable))
3922 1.1 christos continue;
3923 1.1 christos }
3924 1.1 christos
3925 1.1 christos if (sym_sec != NULL && discarded_section (sym_sec))
3926 1.1 christos RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3927 1.1 christos rel, 1, relend, howto, 0, contents);
3928 1.1 christos
3929 1.1 christos if (info->relocatable)
3930 1.1 christos continue;
3931 1.1 christos
3932 1.1 christos hit_addr = contents + rel->r_offset;
3933 1.1 christos value += rel->r_addend;
3934 1.1 christos dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3935 1.1 christos
3936 1.1 christos switch (r_type)
3937 1.1 christos {
3938 1.1 christos case R_IA64_NONE:
3939 1.1 christos case R_IA64_LDXMOV:
3940 1.1 christos continue;
3941 1.1 christos
3942 1.1 christos case R_IA64_IMM14:
3943 1.1 christos case R_IA64_IMM22:
3944 1.1 christos case R_IA64_IMM64:
3945 1.1 christos case R_IA64_DIR32MSB:
3946 1.1 christos case R_IA64_DIR32LSB:
3947 1.1 christos case R_IA64_DIR64MSB:
3948 1.1 christos case R_IA64_DIR64LSB:
3949 1.1 christos /* Install a dynamic relocation for this reloc. */
3950 1.1 christos if ((dynamic_symbol_p || info->shared)
3951 1.1 christos && r_symndx != STN_UNDEF
3952 1.1 christos && (input_section->flags & SEC_ALLOC) != 0)
3953 1.1 christos {
3954 1.1 christos unsigned int dyn_r_type;
3955 1.1 christos long dynindx;
3956 1.1 christos bfd_vma addend;
3957 1.1 christos
3958 1.1 christos BFD_ASSERT (srel != NULL);
3959 1.1 christos
3960 1.1 christos switch (r_type)
3961 1.1 christos {
3962 1.1 christos case R_IA64_IMM14:
3963 1.1 christos case R_IA64_IMM22:
3964 1.1 christos case R_IA64_IMM64:
3965 1.1 christos /* ??? People shouldn't be doing non-pic code in
3966 1.1 christos shared libraries nor dynamic executables. */
3967 1.1 christos (*_bfd_error_handler)
3968 1.1 christos (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
3969 1.1 christos input_bfd,
3970 1.1 christos h ? h->root.root.string
3971 1.1 christos : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3972 1.1 christos sym_sec));
3973 1.1 christos ret_val = FALSE;
3974 1.1 christos continue;
3975 1.1 christos
3976 1.1 christos default:
3977 1.1 christos break;
3978 1.1 christos }
3979 1.1 christos
3980 1.1 christos /* If we don't need dynamic symbol lookup, find a
3981 1.1 christos matching RELATIVE relocation. */
3982 1.1 christos dyn_r_type = r_type;
3983 1.1 christos if (dynamic_symbol_p)
3984 1.1 christos {
3985 1.1 christos dynindx = h->dynindx;
3986 1.1 christos addend = rel->r_addend;
3987 1.1 christos value = 0;
3988 1.1 christos }
3989 1.1 christos else
3990 1.1 christos {
3991 1.1 christos switch (r_type)
3992 1.1 christos {
3993 1.1 christos case R_IA64_DIR32MSB:
3994 1.1 christos dyn_r_type = R_IA64_REL32MSB;
3995 1.1 christos break;
3996 1.1 christos case R_IA64_DIR32LSB:
3997 1.1 christos dyn_r_type = R_IA64_REL32LSB;
3998 1.1 christos break;
3999 1.1 christos case R_IA64_DIR64MSB:
4000 1.1 christos dyn_r_type = R_IA64_REL64MSB;
4001 1.1 christos break;
4002 1.1 christos case R_IA64_DIR64LSB:
4003 1.1 christos dyn_r_type = R_IA64_REL64LSB;
4004 1.1 christos break;
4005 1.1 christos
4006 1.1 christos default:
4007 1.1 christos break;
4008 1.1 christos }
4009 1.1 christos dynindx = 0;
4010 1.1 christos addend = value;
4011 1.1 christos }
4012 1.1 christos
4013 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4014 1.1 christos srel, rel->r_offset, dyn_r_type,
4015 1.1 christos dynindx, addend);
4016 1.1 christos }
4017 1.1 christos /* Fall through. */
4018 1.1 christos
4019 1.1 christos case R_IA64_LTV32MSB:
4020 1.1 christos case R_IA64_LTV32LSB:
4021 1.1 christos case R_IA64_LTV64MSB:
4022 1.1 christos case R_IA64_LTV64LSB:
4023 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4024 1.1 christos break;
4025 1.1 christos
4026 1.1 christos case R_IA64_GPREL22:
4027 1.1 christos case R_IA64_GPREL64I:
4028 1.1 christos case R_IA64_GPREL32MSB:
4029 1.1 christos case R_IA64_GPREL32LSB:
4030 1.1 christos case R_IA64_GPREL64MSB:
4031 1.1 christos case R_IA64_GPREL64LSB:
4032 1.1 christos if (dynamic_symbol_p)
4033 1.1 christos {
4034 1.1 christos (*_bfd_error_handler)
4035 1.1 christos (_("%B: @gprel relocation against dynamic symbol %s"),
4036 1.1 christos input_bfd,
4037 1.1 christos h ? h->root.root.string
4038 1.1 christos : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4039 1.1 christos sym_sec));
4040 1.1 christos ret_val = FALSE;
4041 1.1 christos continue;
4042 1.1 christos }
4043 1.1 christos value -= gp_val;
4044 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4045 1.1 christos break;
4046 1.1 christos
4047 1.1 christos case R_IA64_LTOFF22:
4048 1.1 christos case R_IA64_LTOFF22X:
4049 1.1 christos case R_IA64_LTOFF64I:
4050 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4051 1.1 christos value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4052 1.1 christos rel->r_addend, value, R_IA64_DIRNNLSB);
4053 1.1 christos value -= gp_val;
4054 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4055 1.1 christos break;
4056 1.1 christos
4057 1.1 christos case R_IA64_PLTOFF22:
4058 1.1 christos case R_IA64_PLTOFF64I:
4059 1.1 christos case R_IA64_PLTOFF64MSB:
4060 1.1 christos case R_IA64_PLTOFF64LSB:
4061 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4062 1.1 christos value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4063 1.1 christos value -= gp_val;
4064 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4065 1.1 christos break;
4066 1.1 christos
4067 1.1 christos case R_IA64_FPTR64I:
4068 1.1 christos case R_IA64_FPTR32MSB:
4069 1.1 christos case R_IA64_FPTR32LSB:
4070 1.1 christos case R_IA64_FPTR64MSB:
4071 1.1 christos case R_IA64_FPTR64LSB:
4072 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4073 1.1 christos if (dyn_i->want_fptr)
4074 1.1 christos {
4075 1.1 christos if (!undef_weak_ref)
4076 1.1 christos value = set_fptr_entry (output_bfd, info, dyn_i, value);
4077 1.1 christos }
4078 1.1 christos if (!dyn_i->want_fptr || info->pie)
4079 1.1 christos {
4080 1.1 christos long dynindx;
4081 1.1 christos unsigned int dyn_r_type = r_type;
4082 1.1 christos bfd_vma addend = rel->r_addend;
4083 1.1 christos
4084 1.1 christos /* Otherwise, we expect the dynamic linker to create
4085 1.1 christos the entry. */
4086 1.1 christos
4087 1.1 christos if (dyn_i->want_fptr)
4088 1.1 christos {
4089 1.1 christos if (r_type == R_IA64_FPTR64I)
4090 1.1 christos {
4091 1.1 christos /* We can't represent this without a dynamic symbol.
4092 1.1 christos Adjust the relocation to be against an output
4093 1.1 christos section symbol, which are always present in the
4094 1.1 christos dynamic symbol table. */
4095 1.1 christos /* ??? People shouldn't be doing non-pic code in
4096 1.1 christos shared libraries. Hork. */
4097 1.1 christos (*_bfd_error_handler)
4098 1.1 christos (_("%B: linking non-pic code in a position independent executable"),
4099 1.1 christos input_bfd);
4100 1.1 christos ret_val = FALSE;
4101 1.1 christos continue;
4102 1.1 christos }
4103 1.1 christos dynindx = 0;
4104 1.1 christos addend = value;
4105 1.1 christos dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
4106 1.1 christos }
4107 1.1 christos else if (h)
4108 1.1 christos {
4109 1.1 christos if (h->dynindx != -1)
4110 1.1 christos dynindx = h->dynindx;
4111 1.1 christos else
4112 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4113 1.1 christos (info, h->root.u.def.section->owner,
4114 1.1 christos global_sym_index (h)));
4115 1.1 christos value = 0;
4116 1.1 christos }
4117 1.1 christos else
4118 1.1 christos {
4119 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4120 1.1 christos (info, input_bfd, (long) r_symndx));
4121 1.1 christos value = 0;
4122 1.1 christos }
4123 1.1 christos
4124 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4125 1.1 christos srel, rel->r_offset, dyn_r_type,
4126 1.1 christos dynindx, addend);
4127 1.1 christos }
4128 1.1 christos
4129 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4130 1.1 christos break;
4131 1.1 christos
4132 1.1 christos case R_IA64_LTOFF_FPTR22:
4133 1.1 christos case R_IA64_LTOFF_FPTR64I:
4134 1.1 christos case R_IA64_LTOFF_FPTR32MSB:
4135 1.1 christos case R_IA64_LTOFF_FPTR32LSB:
4136 1.1 christos case R_IA64_LTOFF_FPTR64MSB:
4137 1.1 christos case R_IA64_LTOFF_FPTR64LSB:
4138 1.1 christos {
4139 1.1 christos long dynindx;
4140 1.1 christos
4141 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4142 1.1 christos if (dyn_i->want_fptr)
4143 1.1 christos {
4144 1.1 christos BFD_ASSERT (h == NULL || h->dynindx == -1);
4145 1.1 christos if (!undef_weak_ref)
4146 1.1 christos value = set_fptr_entry (output_bfd, info, dyn_i, value);
4147 1.1 christos dynindx = -1;
4148 1.1 christos }
4149 1.1 christos else
4150 1.1 christos {
4151 1.1 christos /* Otherwise, we expect the dynamic linker to create
4152 1.1 christos the entry. */
4153 1.1 christos if (h)
4154 1.1 christos {
4155 1.1 christos if (h->dynindx != -1)
4156 1.1 christos dynindx = h->dynindx;
4157 1.1 christos else
4158 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4159 1.1 christos (info, h->root.u.def.section->owner,
4160 1.1 christos global_sym_index (h)));
4161 1.1 christos }
4162 1.1 christos else
4163 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4164 1.1 christos (info, input_bfd, (long) r_symndx));
4165 1.1 christos value = 0;
4166 1.1 christos }
4167 1.1 christos
4168 1.1 christos value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4169 1.1 christos rel->r_addend, value, R_IA64_FPTRNNLSB);
4170 1.1 christos value -= gp_val;
4171 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4172 1.1 christos }
4173 1.1 christos break;
4174 1.1 christos
4175 1.1 christos case R_IA64_PCREL32MSB:
4176 1.1 christos case R_IA64_PCREL32LSB:
4177 1.1 christos case R_IA64_PCREL64MSB:
4178 1.1 christos case R_IA64_PCREL64LSB:
4179 1.1 christos /* Install a dynamic relocation for this reloc. */
4180 1.1 christos if (dynamic_symbol_p && r_symndx != STN_UNDEF)
4181 1.1 christos {
4182 1.1 christos BFD_ASSERT (srel != NULL);
4183 1.1 christos
4184 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4185 1.1 christos srel, rel->r_offset, r_type,
4186 1.1 christos h->dynindx, rel->r_addend);
4187 1.1 christos }
4188 1.1 christos goto finish_pcrel;
4189 1.1 christos
4190 1.1 christos case R_IA64_PCREL21B:
4191 1.1 christos case R_IA64_PCREL60B:
4192 1.1 christos /* We should have created a PLT entry for any dynamic symbol. */
4193 1.1 christos dyn_i = NULL;
4194 1.1 christos if (h)
4195 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4196 1.1 christos
4197 1.1 christos if (dyn_i && dyn_i->want_plt2)
4198 1.1 christos {
4199 1.1 christos /* Should have caught this earlier. */
4200 1.1 christos BFD_ASSERT (rel->r_addend == 0);
4201 1.1 christos
4202 1.1 christos value = (ia64_info->root.splt->output_section->vma
4203 1.1 christos + ia64_info->root.splt->output_offset
4204 1.1 christos + dyn_i->plt2_offset);
4205 1.1 christos }
4206 1.1 christos else
4207 1.1 christos {
4208 1.1 christos /* Since there's no PLT entry, Validate that this is
4209 1.1 christos locally defined. */
4210 1.1 christos BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4211 1.1 christos
4212 1.1 christos /* If the symbol is undef_weak, we shouldn't be trying
4213 1.1 christos to call it. There's every chance that we'd wind up
4214 1.1 christos with an out-of-range fixup here. Don't bother setting
4215 1.1 christos any value at all. */
4216 1.1 christos if (undef_weak_ref)
4217 1.1 christos continue;
4218 1.1 christos }
4219 1.1 christos goto finish_pcrel;
4220 1.1 christos
4221 1.1 christos case R_IA64_PCREL21BI:
4222 1.1 christos case R_IA64_PCREL21F:
4223 1.1 christos case R_IA64_PCREL21M:
4224 1.1 christos case R_IA64_PCREL22:
4225 1.1 christos case R_IA64_PCREL64I:
4226 1.1 christos /* The PCREL21BI reloc is specifically not intended for use with
4227 1.1 christos dynamic relocs. PCREL21F and PCREL21M are used for speculation
4228 1.1 christos fixup code, and thus probably ought not be dynamic. The
4229 1.1 christos PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4230 1.1 christos if (dynamic_symbol_p)
4231 1.1 christos {
4232 1.1 christos const char *msg;
4233 1.1 christos
4234 1.1 christos if (r_type == R_IA64_PCREL21BI)
4235 1.1 christos msg = _("%B: @internal branch to dynamic symbol %s");
4236 1.1 christos else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4237 1.1 christos msg = _("%B: speculation fixup to dynamic symbol %s");
4238 1.1 christos else
4239 1.1 christos msg = _("%B: @pcrel relocation against dynamic symbol %s");
4240 1.1 christos (*_bfd_error_handler) (msg, input_bfd,
4241 1.1 christos h ? h->root.root.string
4242 1.1 christos : bfd_elf_sym_name (input_bfd,
4243 1.1 christos symtab_hdr,
4244 1.1 christos sym,
4245 1.1 christos sym_sec));
4246 1.1 christos ret_val = FALSE;
4247 1.1 christos continue;
4248 1.1 christos }
4249 1.1 christos goto finish_pcrel;
4250 1.1 christos
4251 1.1 christos finish_pcrel:
4252 1.1 christos /* Make pc-relative. */
4253 1.1 christos value -= (input_section->output_section->vma
4254 1.1 christos + input_section->output_offset
4255 1.1 christos + rel->r_offset) & ~ (bfd_vma) 0x3;
4256 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4257 1.1 christos break;
4258 1.1 christos
4259 1.1 christos case R_IA64_SEGREL32MSB:
4260 1.1 christos case R_IA64_SEGREL32LSB:
4261 1.1 christos case R_IA64_SEGREL64MSB:
4262 1.1 christos case R_IA64_SEGREL64LSB:
4263 1.1 christos {
4264 1.1 christos /* Find the segment that contains the output_section. */
4265 1.1 christos Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
4266 1.1 christos (output_bfd, input_section->output_section);
4267 1.1 christos
4268 1.1 christos if (p == NULL)
4269 1.1 christos {
4270 1.1 christos r = bfd_reloc_notsupported;
4271 1.1 christos }
4272 1.1 christos else
4273 1.1 christos {
4274 1.1 christos /* The VMA of the segment is the vaddr of the associated
4275 1.1 christos program header. */
4276 1.1 christos if (value > p->p_vaddr)
4277 1.1 christos value -= p->p_vaddr;
4278 1.1 christos else
4279 1.1 christos value = 0;
4280 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4281 1.1 christos }
4282 1.1 christos break;
4283 1.1 christos }
4284 1.1 christos
4285 1.1 christos case R_IA64_SECREL32MSB:
4286 1.1 christos case R_IA64_SECREL32LSB:
4287 1.1 christos case R_IA64_SECREL64MSB:
4288 1.1 christos case R_IA64_SECREL64LSB:
4289 1.1 christos /* Make output-section relative to section where the symbol
4290 1.1 christos is defined. PR 475 */
4291 1.1 christos if (sym_sec)
4292 1.1 christos value -= sym_sec->output_section->vma;
4293 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4294 1.1 christos break;
4295 1.1 christos
4296 1.1 christos case R_IA64_IPLTMSB:
4297 1.1 christos case R_IA64_IPLTLSB:
4298 1.1 christos /* Install a dynamic relocation for this reloc. */
4299 1.1 christos if ((dynamic_symbol_p || info->shared)
4300 1.1 christos && (input_section->flags & SEC_ALLOC) != 0)
4301 1.1 christos {
4302 1.1 christos BFD_ASSERT (srel != NULL);
4303 1.1 christos
4304 1.1 christos /* If we don't need dynamic symbol lookup, install two
4305 1.1 christos RELATIVE relocations. */
4306 1.1 christos if (!dynamic_symbol_p)
4307 1.1 christos {
4308 1.1 christos unsigned int dyn_r_type;
4309 1.1 christos
4310 1.1 christos if (r_type == R_IA64_IPLTMSB)
4311 1.1 christos dyn_r_type = R_IA64_REL64MSB;
4312 1.1 christos else
4313 1.1 christos dyn_r_type = R_IA64_REL64LSB;
4314 1.1 christos
4315 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info,
4316 1.1 christos input_section,
4317 1.1 christos srel, rel->r_offset,
4318 1.1 christos dyn_r_type, 0, value);
4319 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info,
4320 1.1 christos input_section,
4321 1.1 christos srel, rel->r_offset + 8,
4322 1.1 christos dyn_r_type, 0, gp_val);
4323 1.1 christos }
4324 1.1 christos else
4325 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4326 1.1 christos srel, rel->r_offset, r_type,
4327 1.1 christos h->dynindx, rel->r_addend);
4328 1.1 christos }
4329 1.1 christos
4330 1.1 christos if (r_type == R_IA64_IPLTMSB)
4331 1.1 christos r_type = R_IA64_DIR64MSB;
4332 1.1 christos else
4333 1.1 christos r_type = R_IA64_DIR64LSB;
4334 1.1 christos ia64_elf_install_value (hit_addr, value, r_type);
4335 1.1 christos r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
4336 1.1 christos break;
4337 1.1 christos
4338 1.1 christos case R_IA64_TPREL14:
4339 1.1 christos case R_IA64_TPREL22:
4340 1.1 christos case R_IA64_TPREL64I:
4341 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4342 1.1 christos goto missing_tls_sec;
4343 1.1 christos value -= elfNN_ia64_tprel_base (info);
4344 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4345 1.1 christos break;
4346 1.1 christos
4347 1.1 christos case R_IA64_DTPREL14:
4348 1.1 christos case R_IA64_DTPREL22:
4349 1.1 christos case R_IA64_DTPREL64I:
4350 1.1 christos case R_IA64_DTPREL32LSB:
4351 1.1 christos case R_IA64_DTPREL32MSB:
4352 1.1 christos case R_IA64_DTPREL64LSB:
4353 1.1 christos case R_IA64_DTPREL64MSB:
4354 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4355 1.1 christos goto missing_tls_sec;
4356 1.1 christos value -= elfNN_ia64_dtprel_base (info);
4357 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4358 1.1 christos break;
4359 1.1 christos
4360 1.1 christos case R_IA64_LTOFF_TPREL22:
4361 1.1 christos case R_IA64_LTOFF_DTPMOD22:
4362 1.1 christos case R_IA64_LTOFF_DTPREL22:
4363 1.1 christos {
4364 1.1 christos int got_r_type;
4365 1.1 christos long dynindx = h ? h->dynindx : -1;
4366 1.1 christos bfd_vma r_addend = rel->r_addend;
4367 1.1 christos
4368 1.1 christos switch (r_type)
4369 1.1 christos {
4370 1.1 christos default:
4371 1.1 christos case R_IA64_LTOFF_TPREL22:
4372 1.1 christos if (!dynamic_symbol_p)
4373 1.1 christos {
4374 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4375 1.1 christos goto missing_tls_sec;
4376 1.1 christos if (!info->shared)
4377 1.1 christos value -= elfNN_ia64_tprel_base (info);
4378 1.1 christos else
4379 1.1 christos {
4380 1.1 christos r_addend += value - elfNN_ia64_dtprel_base (info);
4381 1.1 christos dynindx = 0;
4382 1.1 christos }
4383 1.1 christos }
4384 1.1 christos got_r_type = R_IA64_TPREL64LSB;
4385 1.1 christos break;
4386 1.1 christos case R_IA64_LTOFF_DTPMOD22:
4387 1.1 christos if (!dynamic_symbol_p && !info->shared)
4388 1.1 christos value = 1;
4389 1.1 christos got_r_type = R_IA64_DTPMOD64LSB;
4390 1.1 christos break;
4391 1.1 christos case R_IA64_LTOFF_DTPREL22:
4392 1.1 christos if (!dynamic_symbol_p)
4393 1.1 christos {
4394 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4395 1.1 christos goto missing_tls_sec;
4396 1.1 christos value -= elfNN_ia64_dtprel_base (info);
4397 1.1 christos }
4398 1.1 christos got_r_type = R_IA64_DTPRELNNLSB;
4399 1.1 christos break;
4400 1.1 christos }
4401 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4402 1.1 christos value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4403 1.1 christos value, got_r_type);
4404 1.1 christos value -= gp_val;
4405 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4406 1.1 christos }
4407 1.1 christos break;
4408 1.1 christos
4409 1.1 christos default:
4410 1.1 christos r = bfd_reloc_notsupported;
4411 1.1 christos break;
4412 1.1 christos }
4413 1.1 christos
4414 1.1 christos switch (r)
4415 1.1 christos {
4416 1.1 christos case bfd_reloc_ok:
4417 1.1 christos break;
4418 1.1 christos
4419 1.1 christos case bfd_reloc_undefined:
4420 1.1 christos /* This can happen for global table relative relocs if
4421 1.1 christos __gp is undefined. This is a panic situation so we
4422 1.1 christos don't try to continue. */
4423 1.1 christos (*info->callbacks->undefined_symbol)
4424 1.1 christos (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4425 1.1 christos return FALSE;
4426 1.1 christos
4427 1.1 christos case bfd_reloc_notsupported:
4428 1.1 christos {
4429 1.1 christos const char *name;
4430 1.1 christos
4431 1.1 christos if (h)
4432 1.1 christos name = h->root.root.string;
4433 1.1 christos else
4434 1.1 christos name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4435 1.1 christos sym_sec);
4436 1.1 christos if (!(*info->callbacks->warning) (info, _("unsupported reloc"),
4437 1.1 christos name, input_bfd,
4438 1.1 christos input_section, rel->r_offset))
4439 1.1 christos return FALSE;
4440 1.1 christos ret_val = FALSE;
4441 1.1 christos }
4442 1.1 christos break;
4443 1.1 christos
4444 1.1 christos case bfd_reloc_dangerous:
4445 1.1 christos case bfd_reloc_outofrange:
4446 1.1 christos case bfd_reloc_overflow:
4447 1.1 christos default:
4448 1.1 christos missing_tls_sec:
4449 1.1 christos {
4450 1.1 christos const char *name;
4451 1.1 christos
4452 1.1 christos if (h)
4453 1.1 christos name = h->root.root.string;
4454 1.1 christos else
4455 1.1 christos name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4456 1.1 christos sym_sec);
4457 1.1 christos
4458 1.1 christos switch (r_type)
4459 1.1 christos {
4460 1.1 christos case R_IA64_TPREL14:
4461 1.1 christos case R_IA64_TPREL22:
4462 1.1 christos case R_IA64_TPREL64I:
4463 1.1 christos case R_IA64_DTPREL14:
4464 1.1 christos case R_IA64_DTPREL22:
4465 1.1 christos case R_IA64_DTPREL64I:
4466 1.1 christos case R_IA64_DTPREL32LSB:
4467 1.1 christos case R_IA64_DTPREL32MSB:
4468 1.1 christos case R_IA64_DTPREL64LSB:
4469 1.1 christos case R_IA64_DTPREL64MSB:
4470 1.1 christos case R_IA64_LTOFF_TPREL22:
4471 1.1 christos case R_IA64_LTOFF_DTPMOD22:
4472 1.1 christos case R_IA64_LTOFF_DTPREL22:
4473 1.1 christos (*_bfd_error_handler)
4474 1.1 christos (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."),
4475 1.1 christos input_bfd, input_section, howto->name, name,
4476 1.1 christos rel->r_offset);
4477 1.1 christos break;
4478 1.1 christos
4479 1.1 christos case R_IA64_PCREL21B:
4480 1.1 christos case R_IA64_PCREL21BI:
4481 1.1 christos case R_IA64_PCREL21M:
4482 1.1 christos case R_IA64_PCREL21F:
4483 1.1 christos if (is_elf_hash_table (info->hash))
4484 1.1 christos {
4485 1.1 christos /* Relaxtion is always performed for ELF output.
4486 1.1 christos Overflow failures for those relocations mean
4487 1.1 christos that the section is too big to relax. */
4488 1.1 christos (*_bfd_error_handler)
4489 1.1 christos (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."),
4490 1.1 christos input_bfd, input_section, howto->name, name,
4491 1.1 christos rel->r_offset, input_section->size);
4492 1.1 christos break;
4493 1.1 christos }
4494 1.1 christos default:
4495 1.1 christos if (!(*info->callbacks->reloc_overflow) (info,
4496 1.1 christos &h->root,
4497 1.1 christos name,
4498 1.1 christos howto->name,
4499 1.1 christos (bfd_vma) 0,
4500 1.1 christos input_bfd,
4501 1.1 christos input_section,
4502 1.1 christos rel->r_offset))
4503 1.1 christos return FALSE;
4504 1.1 christos break;
4505 1.1 christos }
4506 1.1 christos
4507 1.1 christos ret_val = FALSE;
4508 1.1 christos }
4509 1.1 christos break;
4510 1.1 christos }
4511 1.1 christos }
4512 1.1 christos
4513 1.1 christos return ret_val;
4514 1.1 christos }
4515 1.1 christos
4516 1.1 christos static bfd_boolean
4517 1.1 christos elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd,
4518 1.1 christos struct bfd_link_info *info,
4519 1.1 christos struct elf_link_hash_entry *h,
4520 1.1 christos Elf_Internal_Sym *sym)
4521 1.1 christos {
4522 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
4523 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
4524 1.1 christos
4525 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
4526 1.1 christos if (ia64_info == NULL)
4527 1.1 christos return FALSE;
4528 1.1 christos
4529 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4530 1.1 christos
4531 1.1 christos /* Fill in the PLT data, if required. */
4532 1.1 christos if (dyn_i && dyn_i->want_plt)
4533 1.1 christos {
4534 1.1 christos Elf_Internal_Rela outrel;
4535 1.1 christos bfd_byte *loc;
4536 1.1 christos asection *plt_sec;
4537 1.1 christos bfd_vma plt_addr, pltoff_addr, gp_val, plt_index;
4538 1.1 christos
4539 1.1 christos gp_val = _bfd_get_gp_value (output_bfd);
4540 1.1 christos
4541 1.1 christos /* Initialize the minimal PLT entry. */
4542 1.1 christos
4543 1.1 christos plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4544 1.1 christos plt_sec = ia64_info->root.splt;
4545 1.1 christos loc = plt_sec->contents + dyn_i->plt_offset;
4546 1.1 christos
4547 1.1 christos memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4548 1.1 christos ia64_elf_install_value (loc, plt_index, R_IA64_IMM22);
4549 1.1 christos ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4550 1.1 christos
4551 1.1 christos plt_addr = (plt_sec->output_section->vma
4552 1.1 christos + plt_sec->output_offset
4553 1.1 christos + dyn_i->plt_offset);
4554 1.1 christos pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4555 1.1 christos
4556 1.1 christos /* Initialize the FULL PLT entry, if needed. */
4557 1.1 christos if (dyn_i->want_plt2)
4558 1.1 christos {
4559 1.1 christos loc = plt_sec->contents + dyn_i->plt2_offset;
4560 1.1 christos
4561 1.1 christos memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4562 1.1 christos ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4563 1.1 christos
4564 1.1 christos /* Mark the symbol as undefined, rather than as defined in the
4565 1.1 christos plt section. Leave the value alone. */
4566 1.1 christos /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4567 1.1 christos first place. But perhaps elflink.c did some for us. */
4568 1.1 christos if (!h->def_regular)
4569 1.1 christos sym->st_shndx = SHN_UNDEF;
4570 1.1 christos }
4571 1.1 christos
4572 1.1 christos /* Create the dynamic relocation. */
4573 1.1 christos outrel.r_offset = pltoff_addr;
4574 1.1 christos if (bfd_little_endian (output_bfd))
4575 1.1 christos outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4576 1.1 christos else
4577 1.1 christos outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4578 1.1 christos outrel.r_addend = 0;
4579 1.1 christos
4580 1.1 christos /* This is fun. In the .IA_64.pltoff section, we've got entries
4581 1.1 christos that correspond both to real PLT entries, and those that
4582 1.1 christos happened to resolve to local symbols but need to be created
4583 1.1 christos to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4584 1.1 christos relocations for the real PLT should come at the end of the
4585 1.1 christos section, so that they can be indexed by plt entry at runtime.
4586 1.1 christos
4587 1.1 christos We emitted all of the relocations for the non-PLT @pltoff
4588 1.1 christos entries during relocate_section. So we can consider the
4589 1.1 christos existing sec->reloc_count to be the base of the array of
4590 1.1 christos PLT relocations. */
4591 1.1 christos
4592 1.1 christos loc = ia64_info->rel_pltoff_sec->contents;
4593 1.1 christos loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index)
4594 1.1 christos * sizeof (ElfNN_External_Rela));
4595 1.1 christos bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4596 1.1 christos }
4597 1.1 christos
4598 1.1 christos /* Mark some specially defined symbols as absolute. */
4599 1.1 christos if (h == ia64_info->root.hdynamic
4600 1.1 christos || h == ia64_info->root.hgot
4601 1.1 christos || h == ia64_info->root.hplt)
4602 1.1 christos sym->st_shndx = SHN_ABS;
4603 1.1 christos
4604 1.1 christos return TRUE;
4605 1.1 christos }
4606 1.1 christos
4607 1.1 christos static bfd_boolean
4608 1.1 christos elfNN_ia64_finish_dynamic_sections (bfd *abfd,
4609 1.1 christos struct bfd_link_info *info)
4610 1.1 christos {
4611 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
4612 1.1 christos bfd *dynobj;
4613 1.1 christos
4614 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
4615 1.1 christos if (ia64_info == NULL)
4616 1.1 christos return FALSE;
4617 1.1 christos
4618 1.1 christos dynobj = ia64_info->root.dynobj;
4619 1.1 christos
4620 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
4621 1.1 christos {
4622 1.1 christos ElfNN_External_Dyn *dyncon, *dynconend;
4623 1.1 christos asection *sdyn, *sgotplt;
4624 1.1 christos bfd_vma gp_val;
4625 1.1 christos
4626 1.1 christos sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4627 1.1 christos sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
4628 1.1 christos BFD_ASSERT (sdyn != NULL);
4629 1.1 christos dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4630 1.1 christos dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4631 1.1 christos
4632 1.1 christos gp_val = _bfd_get_gp_value (abfd);
4633 1.1 christos
4634 1.1 christos for (; dyncon < dynconend; dyncon++)
4635 1.1 christos {
4636 1.1 christos Elf_Internal_Dyn dyn;
4637 1.1 christos
4638 1.1 christos bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4639 1.1 christos
4640 1.1 christos switch (dyn.d_tag)
4641 1.1 christos {
4642 1.1 christos case DT_PLTGOT:
4643 1.1 christos dyn.d_un.d_ptr = gp_val;
4644 1.1 christos break;
4645 1.1 christos
4646 1.1 christos case DT_PLTRELSZ:
4647 1.1 christos dyn.d_un.d_val = (ia64_info->minplt_entries
4648 1.1 christos * sizeof (ElfNN_External_Rela));
4649 1.1 christos break;
4650 1.1 christos
4651 1.1 christos case DT_JMPREL:
4652 1.1 christos /* See the comment above in finish_dynamic_symbol. */
4653 1.1 christos dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4654 1.1 christos + ia64_info->rel_pltoff_sec->output_offset
4655 1.1 christos + (ia64_info->rel_pltoff_sec->reloc_count
4656 1.1 christos * sizeof (ElfNN_External_Rela)));
4657 1.1 christos break;
4658 1.1 christos
4659 1.1 christos case DT_IA_64_PLT_RESERVE:
4660 1.1 christos dyn.d_un.d_ptr = (sgotplt->output_section->vma
4661 1.1 christos + sgotplt->output_offset);
4662 1.1 christos break;
4663 1.1 christos
4664 1.1 christos case DT_RELASZ:
4665 1.1 christos /* Do not have RELASZ include JMPREL. This makes things
4666 1.1 christos easier on ld.so. This is not what the rest of BFD set up. */
4667 1.1 christos dyn.d_un.d_val -= (ia64_info->minplt_entries
4668 1.1 christos * sizeof (ElfNN_External_Rela));
4669 1.1 christos break;
4670 1.1 christos }
4671 1.1 christos
4672 1.1 christos bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4673 1.1 christos }
4674 1.1 christos
4675 1.1 christos /* Initialize the PLT0 entry. */
4676 1.1 christos if (ia64_info->root.splt)
4677 1.1 christos {
4678 1.1 christos bfd_byte *loc = ia64_info->root.splt->contents;
4679 1.1 christos bfd_vma pltres;
4680 1.1 christos
4681 1.1 christos memcpy (loc, plt_header, PLT_HEADER_SIZE);
4682 1.1 christos
4683 1.1 christos pltres = (sgotplt->output_section->vma
4684 1.1 christos + sgotplt->output_offset
4685 1.1 christos - gp_val);
4686 1.1 christos
4687 1.1 christos ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22);
4688 1.1 christos }
4689 1.1 christos }
4690 1.1 christos
4691 1.1 christos return TRUE;
4692 1.1 christos }
4693 1.1 christos
4694 1.1 christos /* ELF file flag handling: */
4696 1.1 christos
4697 1.1 christos /* Function to keep IA-64 specific file flags. */
4698 1.1 christos static bfd_boolean
4699 1.1 christos elfNN_ia64_set_private_flags (bfd *abfd, flagword flags)
4700 1.1 christos {
4701 1.1 christos BFD_ASSERT (!elf_flags_init (abfd)
4702 1.1 christos || elf_elfheader (abfd)->e_flags == flags);
4703 1.1 christos
4704 1.1 christos elf_elfheader (abfd)->e_flags = flags;
4705 1.1 christos elf_flags_init (abfd) = TRUE;
4706 1.1 christos return TRUE;
4707 1.1 christos }
4708 1.1 christos
4709 1.1 christos /* Merge backend specific data from an object file to the output
4710 1.1 christos object file when linking. */
4711 1.1 christos static bfd_boolean
4712 1.1 christos elfNN_ia64_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4713 1.1 christos {
4714 1.1 christos flagword out_flags;
4715 1.1 christos flagword in_flags;
4716 1.1 christos bfd_boolean ok = TRUE;
4717 1.1 christos
4718 1.1 christos /* Don't even pretend to support mixed-format linking. */
4719 1.1 christos if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4720 1.1 christos || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4721 1.1 christos return FALSE;
4722 1.1 christos
4723 1.1 christos in_flags = elf_elfheader (ibfd)->e_flags;
4724 1.1 christos out_flags = elf_elfheader (obfd)->e_flags;
4725 1.1 christos
4726 1.1 christos if (! elf_flags_init (obfd))
4727 1.1 christos {
4728 1.1 christos elf_flags_init (obfd) = TRUE;
4729 1.1 christos elf_elfheader (obfd)->e_flags = in_flags;
4730 1.1 christos
4731 1.1 christos if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4732 1.1 christos && bfd_get_arch_info (obfd)->the_default)
4733 1.1 christos {
4734 1.1 christos return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4735 1.1 christos bfd_get_mach (ibfd));
4736 1.1 christos }
4737 1.1 christos
4738 1.1 christos return TRUE;
4739 1.1 christos }
4740 1.1 christos
4741 1.1 christos /* Check flag compatibility. */
4742 1.1 christos if (in_flags == out_flags)
4743 1.1 christos return TRUE;
4744 1.1 christos
4745 1.1 christos /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4746 1.1 christos if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4747 1.1 christos elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4748 1.1 christos
4749 1.1 christos if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4750 1.1 christos {
4751 1.1 christos (*_bfd_error_handler)
4752 1.1 christos (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4753 1.1 christos ibfd);
4754 1.1 christos
4755 1.1 christos bfd_set_error (bfd_error_bad_value);
4756 1.1 christos ok = FALSE;
4757 1.1 christos }
4758 1.1 christos if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4759 1.1 christos {
4760 1.1 christos (*_bfd_error_handler)
4761 1.1 christos (_("%B: linking big-endian files with little-endian files"),
4762 1.1 christos ibfd);
4763 1.1 christos
4764 1.1 christos bfd_set_error (bfd_error_bad_value);
4765 1.1 christos ok = FALSE;
4766 1.1 christos }
4767 1.1 christos if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4768 1.1 christos {
4769 1.1 christos (*_bfd_error_handler)
4770 1.1 christos (_("%B: linking 64-bit files with 32-bit files"),
4771 1.1 christos ibfd);
4772 1.1 christos
4773 1.1 christos bfd_set_error (bfd_error_bad_value);
4774 1.1 christos ok = FALSE;
4775 1.1 christos }
4776 1.1 christos if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4777 1.1 christos {
4778 1.1 christos (*_bfd_error_handler)
4779 1.1 christos (_("%B: linking constant-gp files with non-constant-gp files"),
4780 1.1 christos ibfd);
4781 1.1 christos
4782 1.1 christos bfd_set_error (bfd_error_bad_value);
4783 1.1 christos ok = FALSE;
4784 1.1 christos }
4785 1.1 christos if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4786 1.1 christos != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4787 1.1 christos {
4788 1.1 christos (*_bfd_error_handler)
4789 1.1 christos (_("%B: linking auto-pic files with non-auto-pic files"),
4790 1.1 christos ibfd);
4791 1.1 christos
4792 1.1 christos bfd_set_error (bfd_error_bad_value);
4793 1.1 christos ok = FALSE;
4794 1.1 christos }
4795 1.1 christos
4796 1.1 christos return ok;
4797 1.1 christos }
4798 1.1 christos
4799 1.1 christos static bfd_boolean
4800 1.1 christos elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr)
4801 1.1 christos {
4802 1.1 christos FILE *file = (FILE *) ptr;
4803 1.1 christos flagword flags = elf_elfheader (abfd)->e_flags;
4804 1.1 christos
4805 1.1 christos BFD_ASSERT (abfd != NULL && ptr != NULL);
4806 1.1 christos
4807 1.1 christos fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4808 1.1 christos (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4809 1.1 christos (flags & EF_IA_64_EXT) ? "EXT, " : "",
4810 1.1 christos (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4811 1.1 christos (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4812 1.1 christos (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4813 1.1 christos (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4814 1.1 christos (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4815 1.1.1.2 christos (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4816 1.1.1.2 christos
4817 1.1.1.2 christos _bfd_elf_print_private_bfd_data (abfd, ptr);
4818 1.1 christos return TRUE;
4819 1.1 christos }
4820 1.1 christos
4821 1.1 christos static enum elf_reloc_type_class
4822 1.1 christos elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4823 1.1 christos const asection *rel_sec ATTRIBUTE_UNUSED,
4824 1.1 christos const Elf_Internal_Rela *rela)
4825 1.1 christos {
4826 1.1 christos switch ((int) ELFNN_R_TYPE (rela->r_info))
4827 1.1 christos {
4828 1.1 christos case R_IA64_REL32MSB:
4829 1.1 christos case R_IA64_REL32LSB:
4830 1.1 christos case R_IA64_REL64MSB:
4831 1.1 christos case R_IA64_REL64LSB:
4832 1.1 christos return reloc_class_relative;
4833 1.1 christos case R_IA64_IPLTMSB:
4834 1.1 christos case R_IA64_IPLTLSB:
4835 1.1 christos return reloc_class_plt;
4836 1.1 christos case R_IA64_COPY:
4837 1.1 christos return reloc_class_copy;
4838 1.1 christos default:
4839 1.1 christos return reloc_class_normal;
4840 1.1 christos }
4841 1.1 christos }
4842 1.1 christos
4843 1.1 christos static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
4844 1.1 christos {
4845 1.1 christos { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4846 1.1 christos { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4847 1.1 christos { NULL, 0, 0, 0, 0 }
4848 1.1 christos };
4849 1.1 christos
4850 1.1 christos static bfd_boolean
4851 1.1 christos elfNN_ia64_object_p (bfd *abfd)
4852 1.1 christos {
4853 1.1 christos asection *sec;
4854 1.1 christos asection *group, *unwi, *unw;
4855 1.1 christos flagword flags;
4856 1.1 christos const char *name;
4857 1.1 christos char *unwi_name, *unw_name;
4858 1.1 christos bfd_size_type amt;
4859 1.1 christos
4860 1.1 christos if (abfd->flags & DYNAMIC)
4861 1.1 christos return TRUE;
4862 1.1 christos
4863 1.1 christos /* Flags for fake group section. */
4864 1.1 christos flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
4865 1.1 christos | SEC_EXCLUDE);
4866 1.1 christos
4867 1.1 christos /* We add a fake section group for each .gnu.linkonce.t.* section,
4868 1.1 christos which isn't in a section group, and its unwind sections. */
4869 1.1 christos for (sec = abfd->sections; sec != NULL; sec = sec->next)
4870 1.1 christos {
4871 1.1 christos if (elf_sec_group (sec) == NULL
4872 1.1 christos && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
4873 1.1 christos == (SEC_LINK_ONCE | SEC_CODE))
4874 1.1 christos && CONST_STRNEQ (sec->name, ".gnu.linkonce.t."))
4875 1.1 christos {
4876 1.1 christos name = sec->name + 16;
4877 1.1 christos
4878 1.1 christos amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
4879 1.1 christos unwi_name = bfd_alloc (abfd, amt);
4880 1.1 christos if (!unwi_name)
4881 1.1 christos return FALSE;
4882 1.1 christos
4883 1.1 christos strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
4884 1.1 christos unwi = bfd_get_section_by_name (abfd, unwi_name);
4885 1.1 christos
4886 1.1 christos amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
4887 1.1 christos unw_name = bfd_alloc (abfd, amt);
4888 1.1 christos if (!unw_name)
4889 1.1 christos return FALSE;
4890 1.1 christos
4891 1.1 christos strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
4892 1.1 christos unw = bfd_get_section_by_name (abfd, unw_name);
4893 1.1 christos
4894 1.1 christos /* We need to create a fake group section for it and its
4895 1.1 christos unwind sections. */
4896 1.1 christos group = bfd_make_section_anyway_with_flags (abfd, name,
4897 1.1 christos flags);
4898 1.1 christos if (group == NULL)
4899 1.1 christos return FALSE;
4900 1.1 christos
4901 1.1 christos /* Move the fake group section to the beginning. */
4902 1.1 christos bfd_section_list_remove (abfd, group);
4903 1.1 christos bfd_section_list_prepend (abfd, group);
4904 1.1 christos
4905 1.1 christos elf_next_in_group (group) = sec;
4906 1.1 christos
4907 1.1 christos elf_group_name (sec) = name;
4908 1.1 christos elf_next_in_group (sec) = sec;
4909 1.1 christos elf_sec_group (sec) = group;
4910 1.1 christos
4911 1.1 christos if (unwi)
4912 1.1 christos {
4913 1.1 christos elf_group_name (unwi) = name;
4914 1.1 christos elf_next_in_group (unwi) = sec;
4915 1.1 christos elf_next_in_group (sec) = unwi;
4916 1.1 christos elf_sec_group (unwi) = group;
4917 1.1 christos }
4918 1.1 christos
4919 1.1 christos if (unw)
4920 1.1 christos {
4921 1.1 christos elf_group_name (unw) = name;
4922 1.1 christos if (unwi)
4923 1.1 christos {
4924 1.1 christos elf_next_in_group (unw) = elf_next_in_group (unwi);
4925 1.1 christos elf_next_in_group (unwi) = unw;
4926 1.1 christos }
4927 1.1 christos else
4928 1.1 christos {
4929 1.1 christos elf_next_in_group (unw) = sec;
4930 1.1 christos elf_next_in_group (sec) = unw;
4931 1.1 christos }
4932 1.1 christos elf_sec_group (unw) = group;
4933 1.1 christos }
4934 1.1 christos
4935 1.1 christos /* Fake SHT_GROUP section header. */
4936 1.1 christos elf_section_data (group)->this_hdr.bfd_section = group;
4937 1.1 christos elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
4938 1.1 christos }
4939 1.1 christos }
4940 1.1 christos return TRUE;
4941 1.1 christos }
4942 1.1 christos
4943 1.1 christos static bfd_boolean
4944 1.1 christos elfNN_ia64_hpux_vec (const bfd_target *vec)
4945 1.1 christos {
4946 1.1 christos extern const bfd_target bfd_elfNN_ia64_hpux_big_vec;
4947 1.1 christos return (vec == & bfd_elfNN_ia64_hpux_big_vec);
4948 1.1 christos }
4949 1.1 christos
4950 1.1 christos static void
4951 1.1 christos elfNN_hpux_post_process_headers (bfd *abfd,
4952 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
4953 1.1 christos {
4954 1.1 christos Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4955 1.1 christos
4956 1.1 christos i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
4957 1.1 christos i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4958 1.1 christos }
4959 1.1 christos
4960 1.1 christos static bfd_boolean
4961 1.1 christos elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4962 1.1 christos asection *sec, int *retval)
4963 1.1 christos {
4964 1.1 christos if (bfd_is_com_section (sec))
4965 1.1 christos {
4966 1.1 christos *retval = SHN_IA_64_ANSI_COMMON;
4967 1.1 christos return TRUE;
4968 1.1 christos }
4969 1.1 christos return FALSE;
4970 1.1 christos }
4971 1.1 christos
4972 1.1 christos static void
4973 1.1 christos elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4974 1.1 christos asymbol *asym)
4975 1.1 christos {
4976 1.1 christos elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4977 1.1 christos
4978 1.1 christos switch (elfsym->internal_elf_sym.st_shndx)
4979 1.1 christos {
4980 1.1 christos case SHN_IA_64_ANSI_COMMON:
4981 1.1 christos asym->section = bfd_com_section_ptr;
4982 1.1 christos asym->value = elfsym->internal_elf_sym.st_size;
4983 1.1 christos asym->flags &= ~BSF_GLOBAL;
4984 1.1 christos break;
4985 1.1 christos }
4986 1.1 christos }
4987 1.1 christos
4988 1.1 christos #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec
4990 1.1 christos #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4991 1.1 christos #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec
4992 1.1 christos #define TARGET_BIG_NAME "elfNN-ia64-big"
4993 1.1 christos #define ELF_ARCH bfd_arch_ia64
4994 1.1 christos #define ELF_TARGET_ID IA64_ELF_DATA
4995 1.1 christos #define ELF_MACHINE_CODE EM_IA_64
4996 1.1 christos #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4997 1.1 christos #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4998 1.1 christos #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4999 1.1 christos #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
5000 1.1 christos
5001 1.1 christos #define elf_backend_section_from_shdr \
5002 1.1 christos elfNN_ia64_section_from_shdr
5003 1.1 christos #define elf_backend_section_flags \
5004 1.1 christos elfNN_ia64_section_flags
5005 1.1 christos #define elf_backend_fake_sections \
5006 1.1 christos elfNN_ia64_fake_sections
5007 1.1 christos #define elf_backend_final_write_processing \
5008 1.1 christos elfNN_ia64_final_write_processing
5009 1.1 christos #define elf_backend_add_symbol_hook \
5010 1.1 christos elfNN_ia64_add_symbol_hook
5011 1.1 christos #define elf_backend_additional_program_headers \
5012 1.1 christos elfNN_ia64_additional_program_headers
5013 1.1 christos #define elf_backend_modify_segment_map \
5014 1.1 christos elfNN_ia64_modify_segment_map
5015 1.1 christos #define elf_backend_modify_program_headers \
5016 1.1 christos elfNN_ia64_modify_program_headers
5017 1.1 christos #define elf_info_to_howto \
5018 1.1 christos elfNN_ia64_info_to_howto
5019 1.1 christos
5020 1.1 christos #define bfd_elfNN_bfd_reloc_type_lookup \
5021 1.1 christos ia64_elf_reloc_type_lookup
5022 1.1 christos #define bfd_elfNN_bfd_reloc_name_lookup \
5023 1.1 christos ia64_elf_reloc_name_lookup
5024 1.1 christos #define bfd_elfNN_bfd_is_local_label_name \
5025 1.1 christos elfNN_ia64_is_local_label_name
5026 1.1 christos #define bfd_elfNN_bfd_relax_section \
5027 1.1 christos elfNN_ia64_relax_section
5028 1.1 christos
5029 1.1 christos #define elf_backend_object_p \
5030 1.1 christos elfNN_ia64_object_p
5031 1.1 christos
5032 1.1 christos /* Stuff for the BFD linker: */
5033 1.1 christos #define bfd_elfNN_bfd_link_hash_table_create \
5034 1.1 christos elfNN_ia64_hash_table_create
5035 1.1 christos #define bfd_elfNN_bfd_link_hash_table_free \
5036 1.1 christos elfNN_ia64_hash_table_free
5037 1.1 christos #define elf_backend_create_dynamic_sections \
5038 1.1 christos elfNN_ia64_create_dynamic_sections
5039 1.1 christos #define elf_backend_check_relocs \
5040 1.1 christos elfNN_ia64_check_relocs
5041 1.1 christos #define elf_backend_adjust_dynamic_symbol \
5042 1.1 christos elfNN_ia64_adjust_dynamic_symbol
5043 1.1 christos #define elf_backend_size_dynamic_sections \
5044 1.1 christos elfNN_ia64_size_dynamic_sections
5045 1.1 christos #define elf_backend_omit_section_dynsym \
5046 1.1 christos ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
5047 1.1 christos #define elf_backend_relocate_section \
5048 1.1 christos elfNN_ia64_relocate_section
5049 1.1 christos #define elf_backend_finish_dynamic_symbol \
5050 1.1 christos elfNN_ia64_finish_dynamic_symbol
5051 1.1 christos #define elf_backend_finish_dynamic_sections \
5052 1.1 christos elfNN_ia64_finish_dynamic_sections
5053 1.1 christos #define bfd_elfNN_bfd_final_link \
5054 1.1 christos elfNN_ia64_final_link
5055 1.1 christos
5056 1.1 christos #define bfd_elfNN_bfd_merge_private_bfd_data \
5057 1.1 christos elfNN_ia64_merge_private_bfd_data
5058 1.1 christos #define bfd_elfNN_bfd_set_private_flags \
5059 1.1 christos elfNN_ia64_set_private_flags
5060 1.1 christos #define bfd_elfNN_bfd_print_private_bfd_data \
5061 1.1 christos elfNN_ia64_print_private_bfd_data
5062 1.1 christos
5063 1.1 christos #define elf_backend_plt_readonly 1
5064 1.1 christos #define elf_backend_want_plt_sym 0
5065 1.1 christos #define elf_backend_plt_alignment 5
5066 1.1 christos #define elf_backend_got_header_size 0
5067 1.1 christos #define elf_backend_want_got_plt 1
5068 1.1 christos #define elf_backend_may_use_rel_p 1
5069 1.1 christos #define elf_backend_may_use_rela_p 1
5070 1.1 christos #define elf_backend_default_use_rela_p 1
5071 1.1 christos #define elf_backend_want_dynbss 0
5072 1.1 christos #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5073 1.1 christos #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5074 1.1 christos #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5075 1.1 christos #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5076 1.1 christos #define elf_backend_rela_normal 1
5077 1.1 christos #define elf_backend_special_sections elfNN_ia64_special_sections
5078 1.1 christos #define elf_backend_default_execstack 0
5079 1.1 christos
5080 1.1 christos /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5081 1.1 christos SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5082 1.1 christos We don't want to flood users with so many error messages. We turn
5083 1.1 christos off the warning for now. It will be turned on later when the Intel
5084 1.1 christos compiler is fixed. */
5085 1.1 christos #define elf_backend_link_order_error_handler NULL
5086 1.1 christos
5087 1.1 christos #include "elfNN-target.h"
5088 1.1 christos
5089 1.1 christos /* HPUX-specific vectors. */
5090 1.1 christos
5091 1.1 christos #undef TARGET_LITTLE_SYM
5092 1.1 christos #undef TARGET_LITTLE_NAME
5093 1.1 christos #undef TARGET_BIG_SYM
5094 1.1 christos #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec
5095 1.1 christos #undef TARGET_BIG_NAME
5096 1.1 christos #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5097 1.1 christos
5098 1.1 christos /* These are HP-UX specific functions. */
5099 1.1 christos
5100 1.1 christos #undef elf_backend_post_process_headers
5101 1.1 christos #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5102 1.1 christos
5103 1.1 christos #undef elf_backend_section_from_bfd_section
5104 1.1 christos #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5105 1.1 christos
5106 1.1 christos #undef elf_backend_symbol_processing
5107 1.1 christos #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5108 1.1 christos
5109 1.1 christos #undef elf_backend_want_p_paddr_set_to_zero
5110 1.1 christos #define elf_backend_want_p_paddr_set_to_zero 1
5111 1.1 christos
5112 #undef ELF_COMMONPAGESIZE
5113 #undef ELF_OSABI
5114 #define ELF_OSABI ELFOSABI_HPUX
5115
5116 #undef elfNN_bed
5117 #define elfNN_bed elfNN_ia64_hpux_bed
5118
5119 #include "elfNN-target.h"
5120