elfnn-ia64.c revision 1.1.1.1 1 1.1 christos /* IA-64 support for 64-bit ELF
2 1.1 christos Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 1.1 christos 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 1.1 christos Contributed by David Mosberger-Tang <davidm (at) hpl.hp.com>
5 1.1 christos
6 1.1 christos This file is part of BFD, the Binary File Descriptor library.
7 1.1 christos
8 1.1 christos This program is free software; you can redistribute it and/or modify
9 1.1 christos it under the terms of the GNU General Public License as published by
10 1.1 christos the Free Software Foundation; either version 3 of the License, or
11 1.1 christos (at your option) any later version.
12 1.1 christos
13 1.1 christos This program is distributed in the hope that it will be useful,
14 1.1 christos but WITHOUT ANY WARRANTY; without even the implied warranty of
15 1.1 christos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 1.1 christos GNU General Public License for more details.
17 1.1 christos
18 1.1 christos You should have received a copy of the GNU General Public License
19 1.1 christos along with this program; if not, write to the Free Software
20 1.1 christos Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 1.1 christos MA 02110-1301, USA. */
22 1.1 christos
23 1.1 christos #include "sysdep.h"
24 1.1 christos #include "bfd.h"
25 1.1 christos #include "libbfd.h"
26 1.1 christos #include "elf-bfd.h"
27 1.1 christos #include "opcode/ia64.h"
28 1.1 christos #include "elf/ia64.h"
29 1.1 christos #include "objalloc.h"
30 1.1 christos #include "hashtab.h"
31 1.1 christos #include "bfd_stdint.h"
32 1.1 christos #include "elfxx-ia64.h"
33 1.1 christos
34 1.1 christos #define ARCH_SIZE NN
35 1.1 christos
36 1.1 christos #if ARCH_SIZE == 64
37 1.1 christos #define LOG_SECTION_ALIGN 3
38 1.1 christos #endif
39 1.1 christos
40 1.1 christos #if ARCH_SIZE == 32
41 1.1 christos #define LOG_SECTION_ALIGN 2
42 1.1 christos #endif
43 1.1 christos
44 1.1 christos typedef struct bfd_hash_entry *(*new_hash_entry_func)
45 1.1 christos (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
46 1.1 christos
47 1.1 christos /* In dynamically (linker-) created sections, we generally need to keep track
48 1.1 christos of the place a symbol or expression got allocated to. This is done via hash
49 1.1 christos tables that store entries of the following type. */
50 1.1 christos
51 1.1 christos struct elfNN_ia64_dyn_sym_info
52 1.1 christos {
53 1.1 christos /* The addend for which this entry is relevant. */
54 1.1 christos bfd_vma addend;
55 1.1 christos
56 1.1 christos bfd_vma got_offset;
57 1.1 christos bfd_vma fptr_offset;
58 1.1 christos bfd_vma pltoff_offset;
59 1.1 christos bfd_vma plt_offset;
60 1.1 christos bfd_vma plt2_offset;
61 1.1 christos bfd_vma tprel_offset;
62 1.1 christos bfd_vma dtpmod_offset;
63 1.1 christos bfd_vma dtprel_offset;
64 1.1 christos
65 1.1 christos /* The symbol table entry, if any, that this was derived from. */
66 1.1 christos struct elf_link_hash_entry *h;
67 1.1 christos
68 1.1 christos /* Used to count non-got, non-plt relocations for delayed sizing
69 1.1 christos of relocation sections. */
70 1.1 christos struct elfNN_ia64_dyn_reloc_entry
71 1.1 christos {
72 1.1 christos struct elfNN_ia64_dyn_reloc_entry *next;
73 1.1 christos asection *srel;
74 1.1 christos int type;
75 1.1 christos int count;
76 1.1 christos
77 1.1 christos /* Is this reloc against readonly section? */
78 1.1 christos bfd_boolean reltext;
79 1.1 christos } *reloc_entries;
80 1.1 christos
81 1.1 christos /* TRUE when the section contents have been updated. */
82 1.1 christos unsigned got_done : 1;
83 1.1 christos unsigned fptr_done : 1;
84 1.1 christos unsigned pltoff_done : 1;
85 1.1 christos unsigned tprel_done : 1;
86 1.1 christos unsigned dtpmod_done : 1;
87 1.1 christos unsigned dtprel_done : 1;
88 1.1 christos
89 1.1 christos /* TRUE for the different kinds of linker data we want created. */
90 1.1 christos unsigned want_got : 1;
91 1.1 christos unsigned want_gotx : 1;
92 1.1 christos unsigned want_fptr : 1;
93 1.1 christos unsigned want_ltoff_fptr : 1;
94 1.1 christos unsigned want_plt : 1;
95 1.1 christos unsigned want_plt2 : 1;
96 1.1 christos unsigned want_pltoff : 1;
97 1.1 christos unsigned want_tprel : 1;
98 1.1 christos unsigned want_dtpmod : 1;
99 1.1 christos unsigned want_dtprel : 1;
100 1.1 christos };
101 1.1 christos
102 1.1 christos struct elfNN_ia64_local_hash_entry
103 1.1 christos {
104 1.1 christos int id;
105 1.1 christos unsigned int r_sym;
106 1.1 christos /* The number of elements in elfNN_ia64_dyn_sym_info array. */
107 1.1 christos unsigned int count;
108 1.1 christos /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
109 1.1 christos unsigned int sorted_count;
110 1.1 christos /* The size of elfNN_ia64_dyn_sym_info array. */
111 1.1 christos unsigned int size;
112 1.1 christos /* The array of elfNN_ia64_dyn_sym_info. */
113 1.1 christos struct elfNN_ia64_dyn_sym_info *info;
114 1.1 christos
115 1.1 christos /* TRUE if this hash entry's addends was translated for
116 1.1 christos SHF_MERGE optimization. */
117 1.1 christos unsigned sec_merge_done : 1;
118 1.1 christos };
119 1.1 christos
120 1.1 christos struct elfNN_ia64_link_hash_entry
121 1.1 christos {
122 1.1 christos struct elf_link_hash_entry root;
123 1.1 christos /* The number of elements in elfNN_ia64_dyn_sym_info array. */
124 1.1 christos unsigned int count;
125 1.1 christos /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
126 1.1 christos unsigned int sorted_count;
127 1.1 christos /* The size of elfNN_ia64_dyn_sym_info array. */
128 1.1 christos unsigned int size;
129 1.1 christos /* The array of elfNN_ia64_dyn_sym_info. */
130 1.1 christos struct elfNN_ia64_dyn_sym_info *info;
131 1.1 christos };
132 1.1 christos
133 1.1 christos struct elfNN_ia64_link_hash_table
134 1.1 christos {
135 1.1 christos /* The main hash table. */
136 1.1 christos struct elf_link_hash_table root;
137 1.1 christos
138 1.1 christos asection *fptr_sec; /* Function descriptor table (or NULL). */
139 1.1 christos asection *rel_fptr_sec; /* Dynamic relocation section for same. */
140 1.1 christos asection *pltoff_sec; /* Private descriptors for plt (or NULL). */
141 1.1 christos asection *rel_pltoff_sec; /* Dynamic relocation section for same. */
142 1.1 christos
143 1.1 christos bfd_size_type minplt_entries; /* Number of minplt entries. */
144 1.1 christos unsigned reltext : 1; /* Are there relocs against readonly sections? */
145 1.1 christos unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */
146 1.1 christos bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */
147 1.1 christos /* There are maybe R_IA64_GPREL22 relocations, including those
148 1.1 christos optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
149 1.1 christos sections. We need to record those sections so that we can choose
150 1.1 christos a proper GP to cover all R_IA64_GPREL22 relocations. */
151 1.1 christos asection *max_short_sec; /* Maximum short output section. */
152 1.1 christos bfd_vma max_short_offset; /* Maximum short offset. */
153 1.1 christos asection *min_short_sec; /* Minimum short output section. */
154 1.1 christos bfd_vma min_short_offset; /* Minimum short offset. */
155 1.1 christos
156 1.1 christos htab_t loc_hash_table;
157 1.1 christos void *loc_hash_memory;
158 1.1 christos };
159 1.1 christos
160 1.1 christos struct elfNN_ia64_allocate_data
161 1.1 christos {
162 1.1 christos struct bfd_link_info *info;
163 1.1 christos bfd_size_type ofs;
164 1.1 christos bfd_boolean only_got;
165 1.1 christos };
166 1.1 christos
167 1.1 christos #define elfNN_ia64_hash_table(p) \
168 1.1 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
169 1.1 christos == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL)
170 1.1 christos
171 1.1 christos static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
172 1.1 christos (struct elfNN_ia64_link_hash_table *ia64_info,
173 1.1 christos struct elf_link_hash_entry *h,
174 1.1 christos bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create);
175 1.1 christos static bfd_boolean elfNN_ia64_dynamic_symbol_p
176 1.1 christos (struct elf_link_hash_entry *h, struct bfd_link_info *info, int);
177 1.1 christos static bfd_boolean elfNN_ia64_choose_gp
178 1.1 christos (bfd *abfd, struct bfd_link_info *info, bfd_boolean final);
179 1.1 christos static void elfNN_ia64_dyn_sym_traverse
180 1.1 christos (struct elfNN_ia64_link_hash_table *ia64_info,
181 1.1 christos bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
182 1.1 christos void * info);
183 1.1 christos static bfd_boolean allocate_global_data_got
184 1.1 christos (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
185 1.1 christos static bfd_boolean allocate_global_fptr_got
186 1.1 christos (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
187 1.1 christos static bfd_boolean allocate_local_got
188 1.1 christos (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
189 1.1 christos static bfd_boolean elfNN_ia64_hpux_vec
190 1.1 christos (const bfd_target *vec);
191 1.1 christos static bfd_boolean allocate_dynrel_entries
192 1.1 christos (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
193 1.1 christos static asection *get_pltoff
194 1.1 christos (bfd *abfd, struct bfd_link_info *info,
195 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info);
196 1.1 christos
197 1.1 christos /* ia64-specific relocation. */
199 1.1 christos
200 1.1 christos /* Given a ELF reloc, return the matching HOWTO structure. */
201 1.1 christos
202 1.1 christos static void
203 1.1 christos elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
204 1.1 christos arelent *bfd_reloc,
205 1.1 christos Elf_Internal_Rela *elf_reloc)
206 1.1 christos {
207 1.1 christos bfd_reloc->howto
208 1.1 christos = ia64_elf_lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info));
209 1.1 christos }
210 1.1 christos
211 1.1 christos #define PLT_HEADER_SIZE (3 * 16)
213 1.1 christos #define PLT_MIN_ENTRY_SIZE (1 * 16)
214 1.1 christos #define PLT_FULL_ENTRY_SIZE (2 * 16)
215 1.1 christos #define PLT_RESERVED_WORDS 3
216 1.1 christos
217 1.1 christos static const bfd_byte plt_header[PLT_HEADER_SIZE] =
218 1.1 christos {
219 1.1 christos 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
220 1.1 christos 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
221 1.1 christos 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
222 1.1 christos 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
223 1.1 christos 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
224 1.1 christos 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
225 1.1 christos 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
226 1.1 christos 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
227 1.1 christos 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
228 1.1 christos };
229 1.1 christos
230 1.1 christos static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
231 1.1 christos {
232 1.1 christos 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
233 1.1 christos 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
234 1.1 christos 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
235 1.1 christos };
236 1.1 christos
237 1.1 christos static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
238 1.1 christos {
239 1.1 christos 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
240 1.1 christos 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
241 1.1 christos 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
242 1.1 christos 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
243 1.1 christos 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
244 1.1 christos 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
245 1.1 christos };
246 1.1 christos
247 1.1 christos #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
248 1.1 christos
249 1.1 christos static const bfd_byte oor_brl[16] =
250 1.1 christos {
251 1.1 christos 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
252 1.1 christos 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
253 1.1 christos 0x00, 0x00, 0x00, 0xc0
254 1.1 christos };
255 1.1 christos
256 1.1 christos static const bfd_byte oor_ip[48] =
257 1.1 christos {
258 1.1 christos 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
259 1.1 christos 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
260 1.1 christos 0x01, 0x00, 0x00, 0x60,
261 1.1 christos 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
262 1.1 christos 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
263 1.1 christos 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
264 1.1 christos 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
265 1.1 christos 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
266 1.1 christos 0x60, 0x00, 0x80, 0x00 /* br b6;; */
267 1.1 christos };
268 1.1 christos
269 1.1 christos static size_t oor_branch_size = sizeof (oor_brl);
270 1.1 christos
271 1.1 christos void
272 1.1 christos bfd_elfNN_ia64_after_parse (int itanium)
273 1.1 christos {
274 1.1 christos oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
275 1.1 christos }
276 1.1 christos
277 1.1 christos
279 1.1 christos /* Rename some of the generic section flags to better document how they
280 1.1 christos are used here. */
281 1.1 christos #define skip_relax_pass_0 sec_flg0
282 1.1 christos #define skip_relax_pass_1 sec_flg1
283 1.1 christos
284 1.1 christos /* These functions do relaxation for IA-64 ELF. */
285 1.1 christos
286 1.1 christos static void
287 1.1 christos elfNN_ia64_update_short_info (asection *sec, bfd_vma offset,
288 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info)
289 1.1 christos {
290 1.1 christos /* Skip ABS and SHF_IA_64_SHORT sections. */
291 1.1 christos if (sec == bfd_abs_section_ptr
292 1.1 christos || (sec->flags & SEC_SMALL_DATA) != 0)
293 1.1 christos return;
294 1.1 christos
295 1.1 christos if (!ia64_info->min_short_sec)
296 1.1 christos {
297 1.1 christos ia64_info->max_short_sec = sec;
298 1.1 christos ia64_info->max_short_offset = offset;
299 1.1 christos ia64_info->min_short_sec = sec;
300 1.1 christos ia64_info->min_short_offset = offset;
301 1.1 christos }
302 1.1 christos else if (sec == ia64_info->max_short_sec
303 1.1 christos && offset > ia64_info->max_short_offset)
304 1.1 christos ia64_info->max_short_offset = offset;
305 1.1 christos else if (sec == ia64_info->min_short_sec
306 1.1 christos && offset < ia64_info->min_short_offset)
307 1.1 christos ia64_info->min_short_offset = offset;
308 1.1 christos else if (sec->output_section->vma
309 1.1 christos > ia64_info->max_short_sec->vma)
310 1.1 christos {
311 1.1 christos ia64_info->max_short_sec = sec;
312 1.1 christos ia64_info->max_short_offset = offset;
313 1.1 christos }
314 1.1 christos else if (sec->output_section->vma
315 1.1 christos < ia64_info->min_short_sec->vma)
316 1.1 christos {
317 1.1 christos ia64_info->min_short_sec = sec;
318 1.1 christos ia64_info->min_short_offset = offset;
319 1.1 christos }
320 1.1 christos }
321 1.1 christos
322 1.1 christos static bfd_boolean
323 1.1 christos elfNN_ia64_relax_section (bfd *abfd, asection *sec,
324 1.1 christos struct bfd_link_info *link_info,
325 1.1 christos bfd_boolean *again)
326 1.1 christos {
327 1.1 christos struct one_fixup
328 1.1 christos {
329 1.1 christos struct one_fixup *next;
330 1.1 christos asection *tsec;
331 1.1 christos bfd_vma toff;
332 1.1 christos bfd_vma trampoff;
333 1.1 christos };
334 1.1 christos
335 1.1 christos Elf_Internal_Shdr *symtab_hdr;
336 1.1 christos Elf_Internal_Rela *internal_relocs;
337 1.1 christos Elf_Internal_Rela *irel, *irelend;
338 1.1 christos bfd_byte *contents;
339 1.1 christos Elf_Internal_Sym *isymbuf = NULL;
340 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
341 1.1 christos struct one_fixup *fixups = NULL;
342 1.1 christos bfd_boolean changed_contents = FALSE;
343 1.1 christos bfd_boolean changed_relocs = FALSE;
344 1.1 christos bfd_boolean changed_got = FALSE;
345 1.1 christos bfd_boolean skip_relax_pass_0 = TRUE;
346 1.1 christos bfd_boolean skip_relax_pass_1 = TRUE;
347 1.1 christos bfd_vma gp = 0;
348 1.1 christos
349 1.1 christos /* Assume we're not going to change any sizes, and we'll only need
350 1.1 christos one pass. */
351 1.1 christos *again = FALSE;
352 1.1 christos
353 1.1 christos if (link_info->relocatable)
354 1.1 christos (*link_info->callbacks->einfo)
355 1.1 christos (_("%P%F: --relax and -r may not be used together\n"));
356 1.1 christos
357 1.1 christos /* Don't even try to relax for non-ELF outputs. */
358 1.1 christos if (!is_elf_hash_table (link_info->hash))
359 1.1 christos return FALSE;
360 1.1 christos
361 1.1 christos /* Nothing to do if there are no relocations or there is no need for
362 1.1 christos the current pass. */
363 1.1 christos if ((sec->flags & SEC_RELOC) == 0
364 1.1 christos || sec->reloc_count == 0
365 1.1 christos || (link_info->relax_pass == 0 && sec->skip_relax_pass_0)
366 1.1 christos || (link_info->relax_pass == 1 && sec->skip_relax_pass_1))
367 1.1 christos return TRUE;
368 1.1 christos
369 1.1 christos ia64_info = elfNN_ia64_hash_table (link_info);
370 1.1 christos if (ia64_info == NULL)
371 1.1 christos return FALSE;
372 1.1 christos
373 1.1 christos symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
374 1.1 christos
375 1.1 christos /* Load the relocations for this section. */
376 1.1 christos internal_relocs = (_bfd_elf_link_read_relocs
377 1.1 christos (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
378 1.1 christos link_info->keep_memory));
379 1.1 christos if (internal_relocs == NULL)
380 1.1 christos return FALSE;
381 1.1 christos
382 1.1 christos irelend = internal_relocs + sec->reloc_count;
383 1.1 christos
384 1.1 christos /* Get the section contents. */
385 1.1 christos if (elf_section_data (sec)->this_hdr.contents != NULL)
386 1.1 christos contents = elf_section_data (sec)->this_hdr.contents;
387 1.1 christos else
388 1.1 christos {
389 1.1 christos if (!bfd_malloc_and_get_section (abfd, sec, &contents))
390 1.1 christos goto error_return;
391 1.1 christos }
392 1.1 christos
393 1.1 christos for (irel = internal_relocs; irel < irelend; irel++)
394 1.1 christos {
395 1.1 christos unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
396 1.1 christos bfd_vma symaddr, reladdr, trampoff, toff, roff;
397 1.1 christos asection *tsec;
398 1.1 christos struct one_fixup *f;
399 1.1 christos bfd_size_type amt;
400 1.1 christos bfd_boolean is_branch;
401 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
402 1.1 christos char symtype;
403 1.1 christos
404 1.1 christos switch (r_type)
405 1.1 christos {
406 1.1 christos case R_IA64_PCREL21B:
407 1.1 christos case R_IA64_PCREL21BI:
408 1.1 christos case R_IA64_PCREL21M:
409 1.1 christos case R_IA64_PCREL21F:
410 1.1 christos /* In pass 1, all br relaxations are done. We can skip it. */
411 1.1 christos if (link_info->relax_pass == 1)
412 1.1 christos continue;
413 1.1 christos skip_relax_pass_0 = FALSE;
414 1.1 christos is_branch = TRUE;
415 1.1 christos break;
416 1.1 christos
417 1.1 christos case R_IA64_PCREL60B:
418 1.1 christos /* We can't optimize brl to br in pass 0 since br relaxations
419 1.1 christos will increase the code size. Defer it to pass 1. */
420 1.1 christos if (link_info->relax_pass == 0)
421 1.1 christos {
422 1.1 christos skip_relax_pass_1 = FALSE;
423 1.1 christos continue;
424 1.1 christos }
425 1.1 christos is_branch = TRUE;
426 1.1 christos break;
427 1.1 christos
428 1.1 christos case R_IA64_GPREL22:
429 1.1 christos /* Update max_short_sec/min_short_sec. */
430 1.1 christos
431 1.1 christos case R_IA64_LTOFF22X:
432 1.1 christos case R_IA64_LDXMOV:
433 1.1 christos /* We can't relax ldx/mov in pass 0 since br relaxations will
434 1.1 christos increase the code size. Defer it to pass 1. */
435 1.1 christos if (link_info->relax_pass == 0)
436 1.1 christos {
437 1.1 christos skip_relax_pass_1 = FALSE;
438 1.1 christos continue;
439 1.1 christos }
440 1.1 christos is_branch = FALSE;
441 1.1 christos break;
442 1.1 christos
443 1.1 christos default:
444 1.1 christos continue;
445 1.1 christos }
446 1.1 christos
447 1.1 christos /* Get the value of the symbol referred to by the reloc. */
448 1.1 christos if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
449 1.1 christos {
450 1.1 christos /* A local symbol. */
451 1.1 christos Elf_Internal_Sym *isym;
452 1.1 christos
453 1.1 christos /* Read this BFD's local symbols. */
454 1.1 christos if (isymbuf == NULL)
455 1.1 christos {
456 1.1 christos isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
457 1.1 christos if (isymbuf == NULL)
458 1.1 christos isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
459 1.1 christos symtab_hdr->sh_info, 0,
460 1.1 christos NULL, NULL, NULL);
461 1.1 christos if (isymbuf == 0)
462 1.1 christos goto error_return;
463 1.1 christos }
464 1.1 christos
465 1.1 christos isym = isymbuf + ELFNN_R_SYM (irel->r_info);
466 1.1 christos if (isym->st_shndx == SHN_UNDEF)
467 1.1 christos continue; /* We can't do anything with undefined symbols. */
468 1.1 christos else if (isym->st_shndx == SHN_ABS)
469 1.1 christos tsec = bfd_abs_section_ptr;
470 1.1 christos else if (isym->st_shndx == SHN_COMMON)
471 1.1 christos tsec = bfd_com_section_ptr;
472 1.1 christos else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
473 1.1 christos tsec = bfd_com_section_ptr;
474 1.1 christos else
475 1.1 christos tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
476 1.1 christos
477 1.1 christos toff = isym->st_value;
478 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
479 1.1 christos symtype = ELF_ST_TYPE (isym->st_info);
480 1.1 christos }
481 1.1 christos else
482 1.1 christos {
483 1.1 christos unsigned long indx;
484 1.1 christos struct elf_link_hash_entry *h;
485 1.1 christos
486 1.1 christos indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
487 1.1 christos h = elf_sym_hashes (abfd)[indx];
488 1.1 christos BFD_ASSERT (h != NULL);
489 1.1 christos
490 1.1 christos while (h->root.type == bfd_link_hash_indirect
491 1.1 christos || h->root.type == bfd_link_hash_warning)
492 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
493 1.1 christos
494 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
495 1.1 christos
496 1.1 christos /* For branches to dynamic symbols, we're interested instead
497 1.1 christos in a branch to the PLT entry. */
498 1.1 christos if (is_branch && dyn_i && dyn_i->want_plt2)
499 1.1 christos {
500 1.1 christos /* Internal branches shouldn't be sent to the PLT.
501 1.1 christos Leave this for now and we'll give an error later. */
502 1.1 christos if (r_type != R_IA64_PCREL21B)
503 1.1 christos continue;
504 1.1 christos
505 1.1 christos tsec = ia64_info->root.splt;
506 1.1 christos toff = dyn_i->plt2_offset;
507 1.1 christos BFD_ASSERT (irel->r_addend == 0);
508 1.1 christos }
509 1.1 christos
510 1.1 christos /* Can't do anything else with dynamic symbols. */
511 1.1 christos else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
512 1.1 christos continue;
513 1.1 christos
514 1.1 christos else
515 1.1 christos {
516 1.1 christos /* We can't do anything with undefined symbols. */
517 1.1 christos if (h->root.type == bfd_link_hash_undefined
518 1.1 christos || h->root.type == bfd_link_hash_undefweak)
519 1.1 christos continue;
520 1.1 christos
521 1.1 christos tsec = h->root.u.def.section;
522 1.1 christos toff = h->root.u.def.value;
523 1.1 christos }
524 1.1 christos
525 1.1 christos symtype = h->type;
526 1.1 christos }
527 1.1 christos
528 1.1 christos if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
529 1.1 christos {
530 1.1 christos /* At this stage in linking, no SEC_MERGE symbol has been
531 1.1 christos adjusted, so all references to such symbols need to be
532 1.1 christos passed through _bfd_merged_section_offset. (Later, in
533 1.1 christos relocate_section, all SEC_MERGE symbols *except* for
534 1.1 christos section symbols have been adjusted.)
535 1.1 christos
536 1.1 christos gas may reduce relocations against symbols in SEC_MERGE
537 1.1 christos sections to a relocation against the section symbol when
538 1.1 christos the original addend was zero. When the reloc is against
539 1.1 christos a section symbol we should include the addend in the
540 1.1 christos offset passed to _bfd_merged_section_offset, since the
541 1.1 christos location of interest is the original symbol. On the
542 1.1 christos other hand, an access to "sym+addend" where "sym" is not
543 1.1 christos a section symbol should not include the addend; Such an
544 1.1 christos access is presumed to be an offset from "sym"; The
545 1.1 christos location of interest is just "sym". */
546 1.1 christos if (symtype == STT_SECTION)
547 1.1 christos toff += irel->r_addend;
548 1.1 christos
549 1.1 christos toff = _bfd_merged_section_offset (abfd, &tsec,
550 1.1 christos elf_section_data (tsec)->sec_info,
551 1.1 christos toff);
552 1.1 christos
553 1.1 christos if (symtype != STT_SECTION)
554 1.1 christos toff += irel->r_addend;
555 1.1 christos }
556 1.1 christos else
557 1.1 christos toff += irel->r_addend;
558 1.1 christos
559 1.1 christos symaddr = tsec->output_section->vma + tsec->output_offset + toff;
560 1.1 christos
561 1.1 christos roff = irel->r_offset;
562 1.1 christos
563 1.1 christos if (is_branch)
564 1.1 christos {
565 1.1 christos bfd_signed_vma offset;
566 1.1 christos
567 1.1 christos reladdr = (sec->output_section->vma
568 1.1 christos + sec->output_offset
569 1.1 christos + roff) & (bfd_vma) -4;
570 1.1 christos
571 1.1 christos /* The .plt section is aligned at 32byte and the .text section
572 1.1 christos is aligned at 64byte. The .text section is right after the
573 1.1 christos .plt section. After the first relaxation pass, linker may
574 1.1 christos increase the gap between the .plt and .text sections up
575 1.1 christos to 32byte. We assume linker will always insert 32byte
576 1.1 christos between the .plt and .text sections after the first
577 1.1 christos relaxation pass. */
578 1.1 christos if (tsec == ia64_info->root.splt)
579 1.1 christos offset = -0x1000000 + 32;
580 1.1 christos else
581 1.1 christos offset = -0x1000000;
582 1.1 christos
583 1.1 christos /* If the branch is in range, no need to do anything. */
584 1.1 christos if ((bfd_signed_vma) (symaddr - reladdr) >= offset
585 1.1 christos && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
586 1.1 christos {
587 1.1 christos /* If the 60-bit branch is in 21-bit range, optimize it. */
588 1.1 christos if (r_type == R_IA64_PCREL60B)
589 1.1 christos {
590 1.1 christos ia64_elf_relax_brl (contents, roff);
591 1.1 christos
592 1.1 christos irel->r_info
593 1.1 christos = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
594 1.1 christos R_IA64_PCREL21B);
595 1.1 christos
596 1.1 christos /* If the original relocation offset points to slot
597 1.1 christos 1, change it to slot 2. */
598 1.1 christos if ((irel->r_offset & 3) == 1)
599 1.1 christos irel->r_offset += 1;
600 1.1 christos }
601 1.1 christos
602 1.1 christos continue;
603 1.1 christos }
604 1.1 christos else if (r_type == R_IA64_PCREL60B)
605 1.1 christos continue;
606 1.1 christos else if (ia64_elf_relax_br (contents, roff))
607 1.1 christos {
608 1.1 christos irel->r_info
609 1.1 christos = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
610 1.1 christos R_IA64_PCREL60B);
611 1.1 christos
612 1.1 christos /* Make the relocation offset point to slot 1. */
613 1.1 christos irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1;
614 1.1 christos continue;
615 1.1 christos }
616 1.1 christos
617 1.1 christos /* We can't put a trampoline in a .init/.fini section. Issue
618 1.1 christos an error. */
619 1.1 christos if (strcmp (sec->output_section->name, ".init") == 0
620 1.1 christos || strcmp (sec->output_section->name, ".fini") == 0)
621 1.1 christos {
622 1.1 christos (*_bfd_error_handler)
623 1.1 christos (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."),
624 1.1 christos sec->owner, sec, (unsigned long) roff);
625 1.1 christos bfd_set_error (bfd_error_bad_value);
626 1.1 christos goto error_return;
627 1.1 christos }
628 1.1 christos
629 1.1 christos /* If the branch and target are in the same section, you've
630 1.1 christos got one honking big section and we can't help you unless
631 1.1 christos you are branching backwards. You'll get an error message
632 1.1 christos later. */
633 1.1 christos if (tsec == sec && toff > roff)
634 1.1 christos continue;
635 1.1 christos
636 1.1 christos /* Look for an existing fixup to this address. */
637 1.1 christos for (f = fixups; f ; f = f->next)
638 1.1 christos if (f->tsec == tsec && f->toff == toff)
639 1.1 christos break;
640 1.1 christos
641 1.1 christos if (f == NULL)
642 1.1 christos {
643 1.1 christos /* Two alternatives: If it's a branch to a PLT entry, we can
644 1.1 christos make a copy of the FULL_PLT entry. Otherwise, we'll have
645 1.1 christos to use a `brl' insn to get where we're going. */
646 1.1 christos
647 1.1 christos size_t size;
648 1.1 christos
649 1.1 christos if (tsec == ia64_info->root.splt)
650 1.1 christos size = sizeof (plt_full_entry);
651 1.1 christos else
652 1.1 christos size = oor_branch_size;
653 1.1 christos
654 1.1 christos /* Resize the current section to make room for the new branch. */
655 1.1 christos trampoff = (sec->size + 15) & (bfd_vma) -16;
656 1.1 christos
657 1.1 christos /* If trampoline is out of range, there is nothing we
658 1.1 christos can do. */
659 1.1 christos offset = trampoff - (roff & (bfd_vma) -4);
660 1.1 christos if (offset < -0x1000000 || offset > 0x0FFFFF0)
661 1.1 christos continue;
662 1.1 christos
663 1.1 christos amt = trampoff + size;
664 1.1 christos contents = (bfd_byte *) bfd_realloc (contents, amt);
665 1.1 christos if (contents == NULL)
666 1.1 christos goto error_return;
667 1.1 christos sec->size = amt;
668 1.1 christos
669 1.1 christos if (tsec == ia64_info->root.splt)
670 1.1 christos {
671 1.1 christos memcpy (contents + trampoff, plt_full_entry, size);
672 1.1 christos
673 1.1 christos /* Hijack the old relocation for use as the PLTOFF reloc. */
674 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
675 1.1 christos R_IA64_PLTOFF22);
676 1.1 christos irel->r_offset = trampoff;
677 1.1 christos }
678 1.1 christos else
679 1.1 christos {
680 1.1 christos if (size == sizeof (oor_ip))
681 1.1 christos {
682 1.1 christos memcpy (contents + trampoff, oor_ip, size);
683 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
684 1.1 christos R_IA64_PCREL64I);
685 1.1 christos irel->r_addend -= 16;
686 1.1 christos irel->r_offset = trampoff + 2;
687 1.1 christos }
688 1.1 christos else
689 1.1 christos {
690 1.1 christos memcpy (contents + trampoff, oor_brl, size);
691 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
692 1.1 christos R_IA64_PCREL60B);
693 1.1 christos irel->r_offset = trampoff + 2;
694 1.1 christos }
695 1.1 christos
696 1.1 christos }
697 1.1 christos
698 1.1 christos /* Record the fixup so we don't do it again this section. */
699 1.1 christos f = (struct one_fixup *)
700 1.1 christos bfd_malloc ((bfd_size_type) sizeof (*f));
701 1.1 christos f->next = fixups;
702 1.1 christos f->tsec = tsec;
703 1.1 christos f->toff = toff;
704 1.1 christos f->trampoff = trampoff;
705 1.1 christos fixups = f;
706 1.1 christos }
707 1.1 christos else
708 1.1 christos {
709 1.1 christos /* If trampoline is out of range, there is nothing we
710 1.1 christos can do. */
711 1.1 christos offset = f->trampoff - (roff & (bfd_vma) -4);
712 1.1 christos if (offset < -0x1000000 || offset > 0x0FFFFF0)
713 1.1 christos continue;
714 1.1 christos
715 1.1 christos /* Nop out the reloc, since we're finalizing things here. */
716 1.1 christos irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
717 1.1 christos }
718 1.1 christos
719 1.1 christos /* Fix up the existing branch to hit the trampoline. */
720 1.1 christos if (ia64_elf_install_value (contents + roff, offset, r_type)
721 1.1 christos != bfd_reloc_ok)
722 1.1 christos goto error_return;
723 1.1 christos
724 1.1 christos changed_contents = TRUE;
725 1.1 christos changed_relocs = TRUE;
726 1.1 christos }
727 1.1 christos else
728 1.1 christos {
729 1.1 christos /* Fetch the gp. */
730 1.1 christos if (gp == 0)
731 1.1 christos {
732 1.1 christos bfd *obfd = sec->output_section->owner;
733 1.1 christos gp = _bfd_get_gp_value (obfd);
734 1.1 christos if (gp == 0)
735 1.1 christos {
736 1.1 christos if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE))
737 1.1 christos goto error_return;
738 1.1 christos gp = _bfd_get_gp_value (obfd);
739 1.1 christos }
740 1.1 christos }
741 1.1 christos
742 1.1 christos /* If the data is out of range, do nothing. */
743 1.1 christos if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
744 1.1 christos ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
745 1.1 christos continue;
746 1.1 christos
747 1.1 christos if (r_type == R_IA64_GPREL22)
748 1.1 christos elfNN_ia64_update_short_info (tsec->output_section,
749 1.1 christos tsec->output_offset + toff,
750 1.1 christos ia64_info);
751 1.1 christos else if (r_type == R_IA64_LTOFF22X)
752 1.1 christos {
753 1.1 christos irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
754 1.1 christos R_IA64_GPREL22);
755 1.1 christos changed_relocs = TRUE;
756 1.1 christos if (dyn_i->want_gotx)
757 1.1 christos {
758 1.1 christos dyn_i->want_gotx = 0;
759 1.1 christos changed_got |= !dyn_i->want_got;
760 1.1 christos }
761 1.1 christos
762 1.1 christos elfNN_ia64_update_short_info (tsec->output_section,
763 1.1 christos tsec->output_offset + toff,
764 1.1 christos ia64_info);
765 1.1 christos }
766 1.1 christos else
767 1.1 christos {
768 1.1 christos ia64_elf_relax_ldxmov (contents, roff);
769 1.1 christos irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
770 1.1 christos changed_contents = TRUE;
771 1.1 christos changed_relocs = TRUE;
772 1.1 christos }
773 1.1 christos }
774 1.1 christos }
775 1.1 christos
776 1.1 christos /* ??? If we created fixups, this may push the code segment large
777 1.1 christos enough that the data segment moves, which will change the GP.
778 1.1 christos Reset the GP so that we re-calculate next round. We need to
779 1.1 christos do this at the _beginning_ of the next round; now will not do. */
780 1.1 christos
781 1.1 christos /* Clean up and go home. */
782 1.1 christos while (fixups)
783 1.1 christos {
784 1.1 christos struct one_fixup *f = fixups;
785 1.1 christos fixups = fixups->next;
786 1.1 christos free (f);
787 1.1 christos }
788 1.1 christos
789 1.1 christos if (isymbuf != NULL
790 1.1 christos && symtab_hdr->contents != (unsigned char *) isymbuf)
791 1.1 christos {
792 1.1 christos if (! link_info->keep_memory)
793 1.1 christos free (isymbuf);
794 1.1 christos else
795 1.1 christos {
796 1.1 christos /* Cache the symbols for elf_link_input_bfd. */
797 1.1 christos symtab_hdr->contents = (unsigned char *) isymbuf;
798 1.1 christos }
799 1.1 christos }
800 1.1 christos
801 1.1 christos if (contents != NULL
802 1.1 christos && elf_section_data (sec)->this_hdr.contents != contents)
803 1.1 christos {
804 1.1 christos if (!changed_contents && !link_info->keep_memory)
805 1.1 christos free (contents);
806 1.1 christos else
807 1.1 christos {
808 1.1 christos /* Cache the section contents for elf_link_input_bfd. */
809 1.1 christos elf_section_data (sec)->this_hdr.contents = contents;
810 1.1 christos }
811 1.1 christos }
812 1.1 christos
813 1.1 christos if (elf_section_data (sec)->relocs != internal_relocs)
814 1.1 christos {
815 1.1 christos if (!changed_relocs)
816 1.1 christos free (internal_relocs);
817 1.1 christos else
818 1.1 christos elf_section_data (sec)->relocs = internal_relocs;
819 1.1 christos }
820 1.1 christos
821 1.1 christos if (changed_got)
822 1.1 christos {
823 1.1 christos struct elfNN_ia64_allocate_data data;
824 1.1 christos data.info = link_info;
825 1.1 christos data.ofs = 0;
826 1.1 christos ia64_info->self_dtpmod_offset = (bfd_vma) -1;
827 1.1 christos
828 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
829 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
830 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
831 1.1 christos ia64_info->root.sgot->size = data.ofs;
832 1.1 christos
833 1.1 christos if (ia64_info->root.dynamic_sections_created
834 1.1 christos && ia64_info->root.srelgot != NULL)
835 1.1 christos {
836 1.1 christos /* Resize .rela.got. */
837 1.1 christos ia64_info->root.srelgot->size = 0;
838 1.1 christos if (link_info->shared
839 1.1 christos && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
840 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
841 1.1 christos data.only_got = TRUE;
842 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries,
843 1.1 christos &data);
844 1.1 christos }
845 1.1 christos }
846 1.1 christos
847 1.1 christos if (link_info->relax_pass == 0)
848 1.1 christos {
849 1.1 christos /* Pass 0 is only needed to relax br. */
850 1.1 christos sec->skip_relax_pass_0 = skip_relax_pass_0;
851 1.1 christos sec->skip_relax_pass_1 = skip_relax_pass_1;
852 1.1 christos }
853 1.1 christos
854 1.1 christos *again = changed_contents || changed_relocs;
855 1.1 christos return TRUE;
856 1.1 christos
857 1.1 christos error_return:
858 1.1 christos if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
859 1.1 christos free (isymbuf);
860 1.1 christos if (contents != NULL
861 1.1 christos && elf_section_data (sec)->this_hdr.contents != contents)
862 1.1 christos free (contents);
863 1.1 christos if (internal_relocs != NULL
864 1.1 christos && elf_section_data (sec)->relocs != internal_relocs)
865 1.1 christos free (internal_relocs);
866 1.1 christos return FALSE;
867 1.1 christos }
868 1.1 christos #undef skip_relax_pass_0
869 1.1 christos #undef skip_relax_pass_1
870 1.1 christos
871 1.1 christos /* Return TRUE if NAME is an unwind table section name. */
873 1.1 christos
874 1.1 christos static inline bfd_boolean
875 1.1 christos is_unwind_section_name (bfd *abfd, const char *name)
876 1.1 christos {
877 1.1 christos if (elfNN_ia64_hpux_vec (abfd->xvec)
878 1.1 christos && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
879 1.1 christos return FALSE;
880 1.1 christos
881 1.1 christos return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind)
882 1.1 christos && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info))
883 1.1 christos || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once));
884 1.1 christos }
885 1.1 christos
886 1.1 christos /* Handle an IA-64 specific section when reading an object file. This
887 1.1 christos is called when bfd_section_from_shdr finds a section with an unknown
888 1.1 christos type. */
889 1.1 christos
890 1.1 christos static bfd_boolean
891 1.1 christos elfNN_ia64_section_from_shdr (bfd *abfd,
892 1.1 christos Elf_Internal_Shdr *hdr,
893 1.1 christos const char *name,
894 1.1 christos int shindex)
895 1.1 christos {
896 1.1 christos /* There ought to be a place to keep ELF backend specific flags, but
897 1.1 christos at the moment there isn't one. We just keep track of the
898 1.1 christos sections by their name, instead. Fortunately, the ABI gives
899 1.1 christos suggested names for all the MIPS specific sections, so we will
900 1.1 christos probably get away with this. */
901 1.1 christos switch (hdr->sh_type)
902 1.1 christos {
903 1.1 christos case SHT_IA_64_UNWIND:
904 1.1 christos case SHT_IA_64_HP_OPT_ANOT:
905 1.1 christos break;
906 1.1 christos
907 1.1 christos case SHT_IA_64_EXT:
908 1.1 christos if (strcmp (name, ELF_STRING_ia64_archext) != 0)
909 1.1 christos return FALSE;
910 1.1 christos break;
911 1.1 christos
912 1.1 christos default:
913 1.1 christos return FALSE;
914 1.1 christos }
915 1.1 christos
916 1.1 christos if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
917 1.1 christos return FALSE;
918 1.1 christos
919 1.1 christos return TRUE;
920 1.1 christos }
921 1.1 christos
922 1.1 christos /* Convert IA-64 specific section flags to bfd internal section flags. */
923 1.1 christos
924 1.1 christos /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
925 1.1 christos flag. */
926 1.1 christos
927 1.1 christos static bfd_boolean
928 1.1 christos elfNN_ia64_section_flags (flagword *flags,
929 1.1 christos const Elf_Internal_Shdr *hdr)
930 1.1 christos {
931 1.1 christos if (hdr->sh_flags & SHF_IA_64_SHORT)
932 1.1 christos *flags |= SEC_SMALL_DATA;
933 1.1 christos
934 1.1 christos return TRUE;
935 1.1 christos }
936 1.1 christos
937 1.1 christos /* Set the correct type for an IA-64 ELF section. We do this by the
938 1.1 christos section name, which is a hack, but ought to work. */
939 1.1 christos
940 1.1 christos static bfd_boolean
941 1.1 christos elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr,
942 1.1 christos asection *sec)
943 1.1 christos {
944 1.1 christos const char *name;
945 1.1 christos
946 1.1 christos name = bfd_get_section_name (abfd, sec);
947 1.1 christos
948 1.1 christos if (is_unwind_section_name (abfd, name))
949 1.1 christos {
950 1.1 christos /* We don't have the sections numbered at this point, so sh_info
951 1.1 christos is set later, in elfNN_ia64_final_write_processing. */
952 1.1 christos hdr->sh_type = SHT_IA_64_UNWIND;
953 1.1 christos hdr->sh_flags |= SHF_LINK_ORDER;
954 1.1 christos }
955 1.1 christos else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
956 1.1 christos hdr->sh_type = SHT_IA_64_EXT;
957 1.1 christos else if (strcmp (name, ".HP.opt_annot") == 0)
958 1.1 christos hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
959 1.1 christos else if (strcmp (name, ".reloc") == 0)
960 1.1 christos /* This is an ugly, but unfortunately necessary hack that is
961 1.1 christos needed when producing EFI binaries on IA-64. It tells
962 1.1 christos elf.c:elf_fake_sections() not to consider ".reloc" as a section
963 1.1 christos containing ELF relocation info. We need this hack in order to
964 1.1 christos be able to generate ELF binaries that can be translated into
965 1.1 christos EFI applications (which are essentially COFF objects). Those
966 1.1 christos files contain a COFF ".reloc" section inside an ELFNN object,
967 1.1 christos which would normally cause BFD to segfault because it would
968 1.1 christos attempt to interpret this section as containing relocation
969 1.1 christos entries for section "oc". With this hack enabled, ".reloc"
970 1.1 christos will be treated as a normal data section, which will avoid the
971 1.1 christos segfault. However, you won't be able to create an ELFNN binary
972 1.1 christos with a section named "oc" that needs relocations, but that's
973 1.1 christos the kind of ugly side-effects you get when detecting section
974 1.1 christos types based on their names... In practice, this limitation is
975 1.1 christos unlikely to bite. */
976 1.1 christos hdr->sh_type = SHT_PROGBITS;
977 1.1 christos
978 1.1 christos if (sec->flags & SEC_SMALL_DATA)
979 1.1 christos hdr->sh_flags |= SHF_IA_64_SHORT;
980 1.1 christos
981 1.1 christos /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
982 1.1 christos
983 1.1 christos if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS))
984 1.1 christos hdr->sh_flags |= SHF_IA_64_HP_TLS;
985 1.1 christos
986 1.1 christos return TRUE;
987 1.1 christos }
988 1.1 christos
989 1.1 christos /* The final processing done just before writing out an IA-64 ELF
990 1.1 christos object file. */
991 1.1 christos
992 1.1 christos static void
993 1.1 christos elfNN_ia64_final_write_processing (bfd *abfd,
994 1.1 christos bfd_boolean linker ATTRIBUTE_UNUSED)
995 1.1 christos {
996 1.1 christos Elf_Internal_Shdr *hdr;
997 1.1 christos asection *s;
998 1.1 christos
999 1.1 christos for (s = abfd->sections; s; s = s->next)
1000 1.1 christos {
1001 1.1 christos hdr = &elf_section_data (s)->this_hdr;
1002 1.1 christos switch (hdr->sh_type)
1003 1.1 christos {
1004 1.1 christos case SHT_IA_64_UNWIND:
1005 1.1 christos /* The IA-64 processor-specific ABI requires setting sh_link
1006 1.1 christos to the unwind section, whereas HP-UX requires sh_info to
1007 1.1 christos do so. For maximum compatibility, we'll set both for
1008 1.1 christos now... */
1009 1.1 christos hdr->sh_info = hdr->sh_link;
1010 1.1 christos break;
1011 1.1 christos }
1012 1.1 christos }
1013 1.1 christos
1014 1.1 christos if (! elf_flags_init (abfd))
1015 1.1 christos {
1016 1.1 christos unsigned long flags = 0;
1017 1.1 christos
1018 1.1 christos if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1019 1.1 christos flags |= EF_IA_64_BE;
1020 1.1 christos if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1021 1.1 christos flags |= EF_IA_64_ABI64;
1022 1.1 christos
1023 1.1 christos elf_elfheader(abfd)->e_flags = flags;
1024 1.1 christos elf_flags_init (abfd) = TRUE;
1025 1.1 christos }
1026 1.1 christos }
1027 1.1 christos
1028 1.1 christos /* Hook called by the linker routine which adds symbols from an object
1029 1.1 christos file. We use it to put .comm items in .sbss, and not .bss. */
1030 1.1 christos
1031 1.1 christos static bfd_boolean
1032 1.1 christos elfNN_ia64_add_symbol_hook (bfd *abfd,
1033 1.1 christos struct bfd_link_info *info,
1034 1.1 christos Elf_Internal_Sym *sym,
1035 1.1 christos const char **namep ATTRIBUTE_UNUSED,
1036 1.1 christos flagword *flagsp ATTRIBUTE_UNUSED,
1037 1.1 christos asection **secp,
1038 1.1 christos bfd_vma *valp)
1039 1.1 christos {
1040 1.1 christos if (sym->st_shndx == SHN_COMMON
1041 1.1 christos && !info->relocatable
1042 1.1 christos && sym->st_size <= elf_gp_size (abfd))
1043 1.1 christos {
1044 1.1 christos /* Common symbols less than or equal to -G nn bytes are
1045 1.1 christos automatically put into .sbss. */
1046 1.1 christos
1047 1.1 christos asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1048 1.1 christos
1049 1.1 christos if (scomm == NULL)
1050 1.1 christos {
1051 1.1 christos scomm = bfd_make_section_with_flags (abfd, ".scommon",
1052 1.1 christos (SEC_ALLOC
1053 1.1 christos | SEC_IS_COMMON
1054 1.1 christos | SEC_LINKER_CREATED));
1055 1.1 christos if (scomm == NULL)
1056 1.1 christos return FALSE;
1057 1.1 christos }
1058 1.1 christos
1059 1.1 christos *secp = scomm;
1060 1.1 christos *valp = sym->st_size;
1061 1.1 christos }
1062 1.1 christos
1063 1.1 christos return TRUE;
1064 1.1 christos }
1065 1.1 christos
1066 1.1 christos /* Return the number of additional phdrs we will need. */
1067 1.1 christos
1068 1.1 christos static int
1069 1.1 christos elfNN_ia64_additional_program_headers (bfd *abfd,
1070 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
1071 1.1 christos {
1072 1.1 christos asection *s;
1073 1.1 christos int ret = 0;
1074 1.1 christos
1075 1.1 christos /* See if we need a PT_IA_64_ARCHEXT segment. */
1076 1.1 christos s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1077 1.1 christos if (s && (s->flags & SEC_LOAD))
1078 1.1 christos ++ret;
1079 1.1 christos
1080 1.1 christos /* Count how many PT_IA_64_UNWIND segments we need. */
1081 1.1 christos for (s = abfd->sections; s; s = s->next)
1082 1.1 christos if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1083 1.1 christos ++ret;
1084 1.1 christos
1085 1.1 christos return ret;
1086 1.1 christos }
1087 1.1 christos
1088 1.1 christos static bfd_boolean
1089 1.1 christos elfNN_ia64_modify_segment_map (bfd *abfd,
1090 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
1091 1.1 christos {
1092 1.1 christos struct elf_segment_map *m, **pm;
1093 1.1 christos Elf_Internal_Shdr *hdr;
1094 1.1 christos asection *s;
1095 1.1 christos
1096 1.1 christos /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1097 1.1 christos all PT_LOAD segments. */
1098 1.1 christos s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1099 1.1 christos if (s && (s->flags & SEC_LOAD))
1100 1.1 christos {
1101 1.1 christos for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1102 1.1 christos if (m->p_type == PT_IA_64_ARCHEXT)
1103 1.1 christos break;
1104 1.1 christos if (m == NULL)
1105 1.1 christos {
1106 1.1 christos m = ((struct elf_segment_map *)
1107 1.1 christos bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1108 1.1 christos if (m == NULL)
1109 1.1 christos return FALSE;
1110 1.1 christos
1111 1.1 christos m->p_type = PT_IA_64_ARCHEXT;
1112 1.1 christos m->count = 1;
1113 1.1 christos m->sections[0] = s;
1114 1.1 christos
1115 1.1 christos /* We want to put it after the PHDR and INTERP segments. */
1116 1.1 christos pm = &elf_seg_map (abfd);
1117 1.1 christos while (*pm != NULL
1118 1.1 christos && ((*pm)->p_type == PT_PHDR
1119 1.1 christos || (*pm)->p_type == PT_INTERP))
1120 1.1 christos pm = &(*pm)->next;
1121 1.1 christos
1122 1.1 christos m->next = *pm;
1123 1.1 christos *pm = m;
1124 1.1 christos }
1125 1.1 christos }
1126 1.1 christos
1127 1.1 christos /* Install PT_IA_64_UNWIND segments, if needed. */
1128 1.1 christos for (s = abfd->sections; s; s = s->next)
1129 1.1 christos {
1130 1.1 christos hdr = &elf_section_data (s)->this_hdr;
1131 1.1 christos if (hdr->sh_type != SHT_IA_64_UNWIND)
1132 1.1 christos continue;
1133 1.1 christos
1134 1.1 christos if (s && (s->flags & SEC_LOAD))
1135 1.1 christos {
1136 1.1 christos for (m = elf_seg_map (abfd); m != NULL; m = m->next)
1137 1.1 christos if (m->p_type == PT_IA_64_UNWIND)
1138 1.1 christos {
1139 1.1 christos int i;
1140 1.1 christos
1141 1.1 christos /* Look through all sections in the unwind segment
1142 1.1 christos for a match since there may be multiple sections
1143 1.1 christos to a segment. */
1144 1.1 christos for (i = m->count - 1; i >= 0; --i)
1145 1.1 christos if (m->sections[i] == s)
1146 1.1 christos break;
1147 1.1 christos
1148 1.1 christos if (i >= 0)
1149 1.1 christos break;
1150 1.1 christos }
1151 1.1 christos
1152 1.1 christos if (m == NULL)
1153 1.1 christos {
1154 1.1 christos m = ((struct elf_segment_map *)
1155 1.1 christos bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1156 1.1 christos if (m == NULL)
1157 1.1 christos return FALSE;
1158 1.1 christos
1159 1.1 christos m->p_type = PT_IA_64_UNWIND;
1160 1.1 christos m->count = 1;
1161 1.1 christos m->sections[0] = s;
1162 1.1 christos m->next = NULL;
1163 1.1 christos
1164 1.1 christos /* We want to put it last. */
1165 1.1 christos pm = &elf_seg_map (abfd);
1166 1.1 christos while (*pm != NULL)
1167 1.1 christos pm = &(*pm)->next;
1168 1.1 christos *pm = m;
1169 1.1 christos }
1170 1.1 christos }
1171 1.1 christos }
1172 1.1 christos
1173 1.1 christos return TRUE;
1174 1.1 christos }
1175 1.1 christos
1176 1.1 christos /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1177 1.1 christos the input sections for each output section in the segment and testing
1178 1.1 christos for SHF_IA_64_NORECOV on each. */
1179 1.1 christos
1180 1.1 christos static bfd_boolean
1181 1.1 christos elfNN_ia64_modify_program_headers (bfd *abfd,
1182 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
1183 1.1 christos {
1184 1.1 christos struct elf_obj_tdata *tdata = elf_tdata (abfd);
1185 1.1 christos struct elf_segment_map *m;
1186 1.1 christos Elf_Internal_Phdr *p;
1187 1.1 christos
1188 1.1 christos for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++)
1189 1.1 christos if (m->p_type == PT_LOAD)
1190 1.1 christos {
1191 1.1 christos int i;
1192 1.1 christos for (i = m->count - 1; i >= 0; --i)
1193 1.1 christos {
1194 1.1 christos struct bfd_link_order *order = m->sections[i]->map_head.link_order;
1195 1.1 christos
1196 1.1 christos while (order != NULL)
1197 1.1 christos {
1198 1.1 christos if (order->type == bfd_indirect_link_order)
1199 1.1 christos {
1200 1.1 christos asection *is = order->u.indirect.section;
1201 1.1 christos bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1202 1.1 christos if (flags & SHF_IA_64_NORECOV)
1203 1.1 christos {
1204 1.1 christos p->p_flags |= PF_IA_64_NORECOV;
1205 1.1 christos goto found;
1206 1.1 christos }
1207 1.1 christos }
1208 1.1 christos order = order->next;
1209 1.1 christos }
1210 1.1 christos }
1211 1.1 christos found:;
1212 1.1 christos }
1213 1.1 christos
1214 1.1 christos return TRUE;
1215 1.1 christos }
1216 1.1 christos
1217 1.1 christos /* According to the Tahoe assembler spec, all labels starting with a
1218 1.1 christos '.' are local. */
1219 1.1 christos
1220 1.1 christos static bfd_boolean
1221 1.1 christos elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
1222 1.1 christos const char *name)
1223 1.1 christos {
1224 1.1 christos return name[0] == '.';
1225 1.1 christos }
1226 1.1 christos
1227 1.1 christos /* Should we do dynamic things to this symbol? */
1228 1.1 christos
1229 1.1 christos static bfd_boolean
1230 1.1 christos elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h,
1231 1.1 christos struct bfd_link_info *info, int r_type)
1232 1.1 christos {
1233 1.1 christos bfd_boolean ignore_protected
1234 1.1 christos = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1235 1.1 christos || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1236 1.1 christos
1237 1.1 christos return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1238 1.1 christos }
1239 1.1 christos
1240 1.1 christos static struct bfd_hash_entry*
1242 1.1 christos elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry,
1243 1.1 christos struct bfd_hash_table *table,
1244 1.1 christos const char *string)
1245 1.1 christos {
1246 1.1 christos struct elfNN_ia64_link_hash_entry *ret;
1247 1.1 christos ret = (struct elfNN_ia64_link_hash_entry *) entry;
1248 1.1 christos
1249 1.1 christos /* Allocate the structure if it has not already been allocated by a
1250 1.1 christos subclass. */
1251 1.1 christos if (!ret)
1252 1.1 christos ret = bfd_hash_allocate (table, sizeof (*ret));
1253 1.1 christos
1254 1.1 christos if (!ret)
1255 1.1 christos return 0;
1256 1.1 christos
1257 1.1 christos /* Call the allocation method of the superclass. */
1258 1.1 christos ret = ((struct elfNN_ia64_link_hash_entry *)
1259 1.1 christos _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1260 1.1 christos table, string));
1261 1.1 christos
1262 1.1 christos ret->info = NULL;
1263 1.1 christos ret->count = 0;
1264 1.1 christos ret->sorted_count = 0;
1265 1.1 christos ret->size = 0;
1266 1.1 christos return (struct bfd_hash_entry *) ret;
1267 1.1 christos }
1268 1.1 christos
1269 1.1 christos static void
1270 1.1 christos elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info,
1271 1.1 christos struct elf_link_hash_entry *xdir,
1272 1.1 christos struct elf_link_hash_entry *xind)
1273 1.1 christos {
1274 1.1 christos struct elfNN_ia64_link_hash_entry *dir, *ind;
1275 1.1 christos
1276 1.1 christos dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1277 1.1 christos ind = (struct elfNN_ia64_link_hash_entry *) xind;
1278 1.1 christos
1279 1.1 christos /* Copy down any references that we may have already seen to the
1280 1.1 christos symbol which just became indirect. */
1281 1.1 christos
1282 1.1 christos dir->root.ref_dynamic |= ind->root.ref_dynamic;
1283 1.1 christos dir->root.ref_regular |= ind->root.ref_regular;
1284 1.1 christos dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1285 1.1 christos dir->root.needs_plt |= ind->root.needs_plt;
1286 1.1 christos
1287 1.1 christos if (ind->root.root.type != bfd_link_hash_indirect)
1288 1.1 christos return;
1289 1.1 christos
1290 1.1 christos /* Copy over the got and plt data. This would have been done
1291 1.1 christos by check_relocs. */
1292 1.1 christos
1293 1.1 christos if (ind->info != NULL)
1294 1.1 christos {
1295 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1296 1.1 christos unsigned int count;
1297 1.1 christos
1298 1.1 christos if (dir->info)
1299 1.1 christos free (dir->info);
1300 1.1 christos
1301 1.1 christos dir->info = ind->info;
1302 1.1 christos dir->count = ind->count;
1303 1.1 christos dir->sorted_count = ind->sorted_count;
1304 1.1 christos dir->size = ind->size;
1305 1.1 christos
1306 1.1 christos ind->info = NULL;
1307 1.1 christos ind->count = 0;
1308 1.1 christos ind->sorted_count = 0;
1309 1.1 christos ind->size = 0;
1310 1.1 christos
1311 1.1 christos /* Fix up the dyn_sym_info pointers to the global symbol. */
1312 1.1 christos for (count = dir->count, dyn_i = dir->info;
1313 1.1 christos count != 0;
1314 1.1 christos count--, dyn_i++)
1315 1.1 christos dyn_i->h = &dir->root;
1316 1.1 christos }
1317 1.1 christos
1318 1.1 christos /* Copy over the dynindx. */
1319 1.1 christos
1320 1.1 christos if (ind->root.dynindx != -1)
1321 1.1 christos {
1322 1.1 christos if (dir->root.dynindx != -1)
1323 1.1 christos _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1324 1.1 christos dir->root.dynstr_index);
1325 1.1 christos dir->root.dynindx = ind->root.dynindx;
1326 1.1 christos dir->root.dynstr_index = ind->root.dynstr_index;
1327 1.1 christos ind->root.dynindx = -1;
1328 1.1 christos ind->root.dynstr_index = 0;
1329 1.1 christos }
1330 1.1 christos }
1331 1.1 christos
1332 1.1 christos static void
1333 1.1 christos elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info,
1334 1.1 christos struct elf_link_hash_entry *xh,
1335 1.1 christos bfd_boolean force_local)
1336 1.1 christos {
1337 1.1 christos struct elfNN_ia64_link_hash_entry *h;
1338 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1339 1.1 christos unsigned int count;
1340 1.1 christos
1341 1.1 christos h = (struct elfNN_ia64_link_hash_entry *)xh;
1342 1.1 christos
1343 1.1 christos _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1344 1.1 christos
1345 1.1 christos for (count = h->count, dyn_i = h->info;
1346 1.1 christos count != 0;
1347 1.1 christos count--, dyn_i++)
1348 1.1 christos {
1349 1.1 christos dyn_i->want_plt2 = 0;
1350 1.1 christos dyn_i->want_plt = 0;
1351 1.1 christos }
1352 1.1 christos }
1353 1.1 christos
1354 1.1 christos /* Compute a hash of a local hash entry. */
1355 1.1 christos
1356 1.1 christos static hashval_t
1357 1.1 christos elfNN_ia64_local_htab_hash (const void *ptr)
1358 1.1 christos {
1359 1.1 christos struct elfNN_ia64_local_hash_entry *entry
1360 1.1 christos = (struct elfNN_ia64_local_hash_entry *) ptr;
1361 1.1 christos
1362 1.1 christos return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym);
1363 1.1 christos }
1364 1.1 christos
1365 1.1 christos /* Compare local hash entries. */
1366 1.1 christos
1367 1.1 christos static int
1368 1.1 christos elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2)
1369 1.1 christos {
1370 1.1 christos struct elfNN_ia64_local_hash_entry *entry1
1371 1.1 christos = (struct elfNN_ia64_local_hash_entry *) ptr1;
1372 1.1 christos struct elfNN_ia64_local_hash_entry *entry2
1373 1.1 christos = (struct elfNN_ia64_local_hash_entry *) ptr2;
1374 1.1 christos
1375 1.1 christos return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1376 1.1 christos }
1377 1.1 christos
1378 1.1 christos /* Create the derived linker hash table. The IA-64 ELF port uses this
1379 1.1 christos derived hash table to keep information specific to the IA-64 ElF
1380 1.1 christos linker (without using static variables). */
1381 1.1 christos
1382 1.1 christos static struct bfd_link_hash_table *
1383 1.1 christos elfNN_ia64_hash_table_create (bfd *abfd)
1384 1.1 christos {
1385 1.1 christos struct elfNN_ia64_link_hash_table *ret;
1386 1.1 christos
1387 1.1 christos ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1388 1.1 christos if (!ret)
1389 1.1 christos return NULL;
1390 1.1 christos
1391 1.1 christos if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1392 1.1 christos elfNN_ia64_new_elf_hash_entry,
1393 1.1 christos sizeof (struct elfNN_ia64_link_hash_entry),
1394 1.1 christos IA64_ELF_DATA))
1395 1.1 christos {
1396 1.1 christos free (ret);
1397 1.1 christos return NULL;
1398 1.1 christos }
1399 1.1 christos
1400 1.1 christos ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1401 1.1 christos elfNN_ia64_local_htab_eq, NULL);
1402 1.1 christos ret->loc_hash_memory = objalloc_create ();
1403 1.1 christos if (!ret->loc_hash_table || !ret->loc_hash_memory)
1404 1.1 christos {
1405 1.1 christos free (ret);
1406 1.1 christos return NULL;
1407 1.1 christos }
1408 1.1 christos
1409 1.1 christos return &ret->root.root;
1410 1.1 christos }
1411 1.1 christos
1412 1.1 christos /* Free the global elfNN_ia64_dyn_sym_info array. */
1413 1.1 christos
1414 1.1 christos static bfd_boolean
1415 1.1 christos elfNN_ia64_global_dyn_info_free (void **xentry,
1416 1.1 christos void * unused ATTRIBUTE_UNUSED)
1417 1.1 christos {
1418 1.1 christos struct elfNN_ia64_link_hash_entry *entry
1419 1.1 christos = (struct elfNN_ia64_link_hash_entry *) xentry;
1420 1.1 christos
1421 1.1 christos if (entry->info)
1422 1.1 christos {
1423 1.1 christos free (entry->info);
1424 1.1 christos entry->info = NULL;
1425 1.1 christos entry->count = 0;
1426 1.1 christos entry->sorted_count = 0;
1427 1.1 christos entry->size = 0;
1428 1.1 christos }
1429 1.1 christos
1430 1.1 christos return TRUE;
1431 1.1 christos }
1432 1.1 christos
1433 1.1 christos /* Free the local elfNN_ia64_dyn_sym_info array. */
1434 1.1 christos
1435 1.1 christos static bfd_boolean
1436 1.1 christos elfNN_ia64_local_dyn_info_free (void **slot,
1437 1.1 christos void * unused ATTRIBUTE_UNUSED)
1438 1.1 christos {
1439 1.1 christos struct elfNN_ia64_local_hash_entry *entry
1440 1.1 christos = (struct elfNN_ia64_local_hash_entry *) *slot;
1441 1.1 christos
1442 1.1 christos if (entry->info)
1443 1.1 christos {
1444 1.1 christos free (entry->info);
1445 1.1 christos entry->info = NULL;
1446 1.1 christos entry->count = 0;
1447 1.1 christos entry->sorted_count = 0;
1448 1.1 christos entry->size = 0;
1449 1.1 christos }
1450 1.1 christos
1451 1.1 christos return TRUE;
1452 1.1 christos }
1453 1.1 christos
1454 1.1 christos /* Destroy IA-64 linker hash table. */
1455 1.1 christos
1456 1.1 christos static void
1457 1.1 christos elfNN_ia64_hash_table_free (struct bfd_link_hash_table *hash)
1458 1.1 christos {
1459 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info
1460 1.1 christos = (struct elfNN_ia64_link_hash_table *) hash;
1461 1.1 christos if (ia64_info->loc_hash_table)
1462 1.1 christos {
1463 1.1 christos htab_traverse (ia64_info->loc_hash_table,
1464 1.1 christos elfNN_ia64_local_dyn_info_free, NULL);
1465 1.1 christos htab_delete (ia64_info->loc_hash_table);
1466 1.1 christos }
1467 1.1 christos if (ia64_info->loc_hash_memory)
1468 1.1 christos objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1469 1.1 christos elf_link_hash_traverse (&ia64_info->root,
1470 1.1 christos elfNN_ia64_global_dyn_info_free, NULL);
1471 1.1 christos _bfd_elf_link_hash_table_free (hash);
1472 1.1 christos }
1473 1.1 christos
1474 1.1 christos /* Traverse both local and global hash tables. */
1475 1.1 christos
1476 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data
1477 1.1 christos {
1478 1.1 christos bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *);
1479 1.1 christos void * data;
1480 1.1 christos };
1481 1.1 christos
1482 1.1 christos static bfd_boolean
1483 1.1 christos elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry,
1484 1.1 christos void * xdata)
1485 1.1 christos {
1486 1.1 christos struct elfNN_ia64_link_hash_entry *entry
1487 1.1 christos = (struct elfNN_ia64_link_hash_entry *) xentry;
1488 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data *data
1489 1.1 christos = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1490 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1491 1.1 christos unsigned int count;
1492 1.1 christos
1493 1.1 christos for (count = entry->count, dyn_i = entry->info;
1494 1.1 christos count != 0;
1495 1.1 christos count--, dyn_i++)
1496 1.1 christos if (! (*data->func) (dyn_i, data->data))
1497 1.1 christos return FALSE;
1498 1.1 christos return TRUE;
1499 1.1 christos }
1500 1.1 christos
1501 1.1 christos static bfd_boolean
1502 1.1 christos elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata)
1503 1.1 christos {
1504 1.1 christos struct elfNN_ia64_local_hash_entry *entry
1505 1.1 christos = (struct elfNN_ia64_local_hash_entry *) *slot;
1506 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data *data
1507 1.1 christos = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1508 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
1509 1.1 christos unsigned int count;
1510 1.1 christos
1511 1.1 christos for (count = entry->count, dyn_i = entry->info;
1512 1.1 christos count != 0;
1513 1.1 christos count--, dyn_i++)
1514 1.1 christos if (! (*data->func) (dyn_i, data->data))
1515 1.1 christos return FALSE;
1516 1.1 christos return TRUE;
1517 1.1 christos }
1518 1.1 christos
1519 1.1 christos static void
1520 1.1 christos elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info,
1521 1.1 christos bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
1522 1.1 christos void * data)
1523 1.1 christos {
1524 1.1 christos struct elfNN_ia64_dyn_sym_traverse_data xdata;
1525 1.1 christos
1526 1.1 christos xdata.func = func;
1527 1.1 christos xdata.data = data;
1528 1.1 christos
1529 1.1 christos elf_link_hash_traverse (&ia64_info->root,
1530 1.1 christos elfNN_ia64_global_dyn_sym_thunk, &xdata);
1531 1.1 christos htab_traverse (ia64_info->loc_hash_table,
1532 1.1 christos elfNN_ia64_local_dyn_sym_thunk, &xdata);
1533 1.1 christos }
1534 1.1 christos
1535 1.1 christos static bfd_boolean
1537 1.1 christos elfNN_ia64_create_dynamic_sections (bfd *abfd,
1538 1.1 christos struct bfd_link_info *info)
1539 1.1 christos {
1540 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
1541 1.1 christos asection *s;
1542 1.1 christos
1543 1.1 christos if (! _bfd_elf_create_dynamic_sections (abfd, info))
1544 1.1 christos return FALSE;
1545 1.1 christos
1546 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
1547 1.1 christos if (ia64_info == NULL)
1548 1.1 christos return FALSE;
1549 1.1 christos
1550 1.1 christos {
1551 1.1 christos flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot);
1552 1.1 christos bfd_set_section_flags (abfd, ia64_info->root.sgot,
1553 1.1 christos SEC_SMALL_DATA | flags);
1554 1.1 christos /* The .got section is always aligned at 8 bytes. */
1555 1.1 christos bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3);
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 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 christos return 0;
1962 1.1 christos
1963 1.1 christos got = ia64_info->root.sgot;
1964 1.1 christos
1965 1.1 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 0;
1968 1.1 christos
1969 1.1 christos flags = bfd_get_section_flags (abfd, got);
1970 1.1 christos bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags);
1971 1.1 christos }
1972 1.1 christos
1973 1.1 christos return got;
1974 1.1 christos }
1975 1.1 christos
1976 1.1 christos /* Create function descriptor section (.opd). This section is called .opd
1977 1.1 christos because it contains "official procedure descriptors". The "official"
1978 1.1 christos refers to the fact that these descriptors are used when taking the address
1979 1.1 christos of a procedure, thus ensuring a unique address for each procedure. */
1980 1.1 christos
1981 1.1 christos static asection *
1982 1.1 christos get_fptr (bfd *abfd, struct bfd_link_info *info,
1983 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info)
1984 1.1 christos {
1985 1.1 christos asection *fptr;
1986 1.1 christos bfd *dynobj;
1987 1.1 christos
1988 1.1 christos fptr = ia64_info->fptr_sec;
1989 1.1 christos if (!fptr)
1990 1.1 christos {
1991 1.1 christos dynobj = ia64_info->root.dynobj;
1992 1.1 christos if (!dynobj)
1993 1.1 christos ia64_info->root.dynobj = dynobj = abfd;
1994 1.1 christos
1995 1.1 christos fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd",
1996 1.1 christos (SEC_ALLOC
1997 1.1 christos | SEC_LOAD
1998 1.1 christos | SEC_HAS_CONTENTS
1999 1.1 christos | SEC_IN_MEMORY
2000 1.1 christos | (info->pie ? 0
2001 1.1 christos : SEC_READONLY)
2002 1.1 christos | SEC_LINKER_CREATED));
2003 1.1 christos if (!fptr
2004 1.1 christos || !bfd_set_section_alignment (abfd, fptr, 4))
2005 1.1 christos {
2006 1.1 christos BFD_ASSERT (0);
2007 1.1 christos return NULL;
2008 1.1 christos }
2009 1.1 christos
2010 1.1 christos ia64_info->fptr_sec = fptr;
2011 1.1 christos
2012 1.1 christos if (info->pie)
2013 1.1 christos {
2014 1.1 christos asection *fptr_rel;
2015 1.1 christos fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd",
2016 1.1 christos (SEC_ALLOC | SEC_LOAD
2017 1.1 christos | SEC_HAS_CONTENTS
2018 1.1 christos | SEC_IN_MEMORY
2019 1.1 christos | SEC_LINKER_CREATED
2020 1.1 christos | SEC_READONLY));
2021 1.1 christos if (fptr_rel == NULL
2022 1.1 christos || !bfd_set_section_alignment (abfd, fptr_rel,
2023 1.1 christos LOG_SECTION_ALIGN))
2024 1.1 christos {
2025 1.1 christos BFD_ASSERT (0);
2026 1.1 christos return NULL;
2027 1.1 christos }
2028 1.1 christos
2029 1.1 christos ia64_info->rel_fptr_sec = fptr_rel;
2030 1.1 christos }
2031 1.1 christos }
2032 1.1 christos
2033 1.1 christos return fptr;
2034 1.1 christos }
2035 1.1 christos
2036 1.1 christos static asection *
2037 1.1 christos get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED,
2038 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info)
2039 1.1 christos {
2040 1.1 christos asection *pltoff;
2041 1.1 christos bfd *dynobj;
2042 1.1 christos
2043 1.1 christos pltoff = ia64_info->pltoff_sec;
2044 1.1 christos if (!pltoff)
2045 1.1 christos {
2046 1.1 christos dynobj = ia64_info->root.dynobj;
2047 1.1 christos if (!dynobj)
2048 1.1 christos ia64_info->root.dynobj = dynobj = abfd;
2049 1.1 christos
2050 1.1 christos pltoff = bfd_make_section_anyway_with_flags (dynobj,
2051 1.1 christos ELF_STRING_ia64_pltoff,
2052 1.1 christos (SEC_ALLOC
2053 1.1 christos | SEC_LOAD
2054 1.1 christos | SEC_HAS_CONTENTS
2055 1.1 christos | SEC_IN_MEMORY
2056 1.1 christos | SEC_SMALL_DATA
2057 1.1 christos | SEC_LINKER_CREATED));
2058 1.1 christos if (!pltoff
2059 1.1 christos || !bfd_set_section_alignment (abfd, pltoff, 4))
2060 1.1 christos {
2061 1.1 christos BFD_ASSERT (0);
2062 1.1 christos return NULL;
2063 1.1 christos }
2064 1.1 christos
2065 1.1 christos ia64_info->pltoff_sec = pltoff;
2066 1.1 christos }
2067 1.1 christos
2068 1.1 christos return pltoff;
2069 1.1 christos }
2070 1.1 christos
2071 1.1 christos static asection *
2072 1.1 christos get_reloc_section (bfd *abfd,
2073 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info,
2074 1.1 christos asection *sec, bfd_boolean create)
2075 1.1 christos {
2076 1.1 christos const char *srel_name;
2077 1.1 christos asection *srel;
2078 1.1 christos bfd *dynobj;
2079 1.1 christos
2080 1.1 christos srel_name = (bfd_elf_string_from_elf_section
2081 1.1 christos (abfd, elf_elfheader(abfd)->e_shstrndx,
2082 1.1 christos _bfd_elf_single_rel_hdr (sec)->sh_name));
2083 1.1 christos if (srel_name == NULL)
2084 1.1 christos return NULL;
2085 1.1 christos
2086 1.1 christos dynobj = ia64_info->root.dynobj;
2087 1.1 christos if (!dynobj)
2088 1.1 christos ia64_info->root.dynobj = dynobj = abfd;
2089 1.1 christos
2090 1.1 christos srel = bfd_get_linker_section (dynobj, srel_name);
2091 1.1 christos if (srel == NULL && create)
2092 1.1 christos {
2093 1.1 christos srel = bfd_make_section_anyway_with_flags (dynobj, srel_name,
2094 1.1 christos (SEC_ALLOC | SEC_LOAD
2095 1.1 christos | SEC_HAS_CONTENTS
2096 1.1 christos | SEC_IN_MEMORY
2097 1.1 christos | SEC_LINKER_CREATED
2098 1.1 christos | SEC_READONLY));
2099 1.1 christos if (srel == NULL
2100 1.1 christos || !bfd_set_section_alignment (dynobj, srel,
2101 1.1 christos LOG_SECTION_ALIGN))
2102 1.1 christos return NULL;
2103 1.1 christos }
2104 1.1 christos
2105 1.1 christos return srel;
2106 1.1 christos }
2107 1.1 christos
2108 1.1 christos static bfd_boolean
2109 1.1 christos count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2110 1.1 christos asection *srel, int type, bfd_boolean reltext)
2111 1.1 christos {
2112 1.1 christos struct elfNN_ia64_dyn_reloc_entry *rent;
2113 1.1 christos
2114 1.1 christos for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2115 1.1 christos if (rent->srel == srel && rent->type == type)
2116 1.1 christos break;
2117 1.1 christos
2118 1.1 christos if (!rent)
2119 1.1 christos {
2120 1.1 christos rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2121 1.1 christos bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2122 1.1 christos if (!rent)
2123 1.1 christos return FALSE;
2124 1.1 christos
2125 1.1 christos rent->next = dyn_i->reloc_entries;
2126 1.1 christos rent->srel = srel;
2127 1.1 christos rent->type = type;
2128 1.1 christos rent->count = 0;
2129 1.1 christos dyn_i->reloc_entries = rent;
2130 1.1 christos }
2131 1.1 christos rent->reltext = reltext;
2132 1.1 christos rent->count++;
2133 1.1 christos
2134 1.1 christos return TRUE;
2135 1.1 christos }
2136 1.1 christos
2137 1.1 christos static bfd_boolean
2138 1.1 christos elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2139 1.1 christos asection *sec,
2140 1.1 christos const Elf_Internal_Rela *relocs)
2141 1.1 christos {
2142 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2143 1.1 christos const Elf_Internal_Rela *relend;
2144 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2145 1.1 christos const Elf_Internal_Rela *rel;
2146 1.1 christos asection *got, *fptr, *srel, *pltoff;
2147 1.1 christos enum {
2148 1.1 christos NEED_GOT = 1,
2149 1.1 christos NEED_GOTX = 2,
2150 1.1 christos NEED_FPTR = 4,
2151 1.1 christos NEED_PLTOFF = 8,
2152 1.1 christos NEED_MIN_PLT = 16,
2153 1.1 christos NEED_FULL_PLT = 32,
2154 1.1 christos NEED_DYNREL = 64,
2155 1.1 christos NEED_LTOFF_FPTR = 128,
2156 1.1 christos NEED_TPREL = 256,
2157 1.1 christos NEED_DTPMOD = 512,
2158 1.1 christos NEED_DTPREL = 1024
2159 1.1 christos };
2160 1.1 christos int need_entry;
2161 1.1 christos struct elf_link_hash_entry *h;
2162 1.1 christos unsigned long r_symndx;
2163 1.1 christos bfd_boolean maybe_dynamic;
2164 1.1 christos
2165 1.1 christos if (info->relocatable)
2166 1.1 christos return TRUE;
2167 1.1 christos
2168 1.1 christos symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2169 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
2170 1.1 christos if (ia64_info == NULL)
2171 1.1 christos return FALSE;
2172 1.1 christos
2173 1.1 christos got = fptr = srel = pltoff = NULL;
2174 1.1 christos
2175 1.1 christos relend = relocs + sec->reloc_count;
2176 1.1 christos
2177 1.1 christos /* We scan relocations first to create dynamic relocation arrays. We
2178 1.1 christos modified get_dyn_sym_info to allow fast insertion and support fast
2179 1.1 christos lookup in the next loop. */
2180 1.1 christos for (rel = relocs; rel < relend; ++rel)
2181 1.1 christos {
2182 1.1 christos r_symndx = ELFNN_R_SYM (rel->r_info);
2183 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
2184 1.1 christos {
2185 1.1 christos long indx = r_symndx - symtab_hdr->sh_info;
2186 1.1 christos h = elf_sym_hashes (abfd)[indx];
2187 1.1 christos while (h->root.type == bfd_link_hash_indirect
2188 1.1 christos || h->root.type == bfd_link_hash_warning)
2189 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2190 1.1 christos }
2191 1.1 christos else
2192 1.1 christos h = NULL;
2193 1.1 christos
2194 1.1 christos /* We can only get preliminary data on whether a symbol is
2195 1.1 christos locally or externally defined, as not all of the input files
2196 1.1 christos have yet been processed. Do something with what we know, as
2197 1.1 christos this may help reduce memory usage and processing time later. */
2198 1.1 christos maybe_dynamic = (h && ((!info->executable
2199 1.1 christos && (!SYMBOLIC_BIND (info, h)
2200 1.1 christos || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2201 1.1 christos || !h->def_regular
2202 1.1 christos || h->root.type == bfd_link_hash_defweak));
2203 1.1 christos
2204 1.1 christos need_entry = 0;
2205 1.1 christos switch (ELFNN_R_TYPE (rel->r_info))
2206 1.1 christos {
2207 1.1 christos case R_IA64_TPREL64MSB:
2208 1.1 christos case R_IA64_TPREL64LSB:
2209 1.1 christos if (info->shared || maybe_dynamic)
2210 1.1 christos need_entry = NEED_DYNREL;
2211 1.1 christos break;
2212 1.1 christos
2213 1.1 christos case R_IA64_LTOFF_TPREL22:
2214 1.1 christos need_entry = NEED_TPREL;
2215 1.1 christos if (info->shared)
2216 1.1 christos info->flags |= DF_STATIC_TLS;
2217 1.1 christos break;
2218 1.1 christos
2219 1.1 christos case R_IA64_DTPREL32MSB:
2220 1.1 christos case R_IA64_DTPREL32LSB:
2221 1.1 christos case R_IA64_DTPREL64MSB:
2222 1.1 christos case R_IA64_DTPREL64LSB:
2223 1.1 christos if (info->shared || maybe_dynamic)
2224 1.1 christos need_entry = NEED_DYNREL;
2225 1.1 christos break;
2226 1.1 christos
2227 1.1 christos case R_IA64_LTOFF_DTPREL22:
2228 1.1 christos need_entry = NEED_DTPREL;
2229 1.1 christos break;
2230 1.1 christos
2231 1.1 christos case R_IA64_DTPMOD64MSB:
2232 1.1 christos case R_IA64_DTPMOD64LSB:
2233 1.1 christos if (info->shared || maybe_dynamic)
2234 1.1 christos need_entry = NEED_DYNREL;
2235 1.1 christos break;
2236 1.1 christos
2237 1.1 christos case R_IA64_LTOFF_DTPMOD22:
2238 1.1 christos need_entry = NEED_DTPMOD;
2239 1.1 christos break;
2240 1.1 christos
2241 1.1 christos case R_IA64_LTOFF_FPTR22:
2242 1.1 christos case R_IA64_LTOFF_FPTR64I:
2243 1.1 christos case R_IA64_LTOFF_FPTR32MSB:
2244 1.1 christos case R_IA64_LTOFF_FPTR32LSB:
2245 1.1 christos case R_IA64_LTOFF_FPTR64MSB:
2246 1.1 christos case R_IA64_LTOFF_FPTR64LSB:
2247 1.1 christos need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2248 1.1 christos break;
2249 1.1 christos
2250 1.1 christos case R_IA64_FPTR64I:
2251 1.1 christos case R_IA64_FPTR32MSB:
2252 1.1 christos case R_IA64_FPTR32LSB:
2253 1.1 christos case R_IA64_FPTR64MSB:
2254 1.1 christos case R_IA64_FPTR64LSB:
2255 1.1 christos if (info->shared || h)
2256 1.1 christos need_entry = NEED_FPTR | NEED_DYNREL;
2257 1.1 christos else
2258 1.1 christos need_entry = NEED_FPTR;
2259 1.1 christos break;
2260 1.1 christos
2261 1.1 christos case R_IA64_LTOFF22:
2262 1.1 christos case R_IA64_LTOFF64I:
2263 1.1 christos need_entry = NEED_GOT;
2264 1.1 christos break;
2265 1.1 christos
2266 1.1 christos case R_IA64_LTOFF22X:
2267 1.1 christos need_entry = NEED_GOTX;
2268 1.1 christos break;
2269 1.1 christos
2270 1.1 christos case R_IA64_PLTOFF22:
2271 1.1 christos case R_IA64_PLTOFF64I:
2272 1.1 christos case R_IA64_PLTOFF64MSB:
2273 1.1 christos case R_IA64_PLTOFF64LSB:
2274 1.1 christos need_entry = NEED_PLTOFF;
2275 1.1 christos if (h)
2276 1.1 christos {
2277 1.1 christos if (maybe_dynamic)
2278 1.1 christos need_entry |= NEED_MIN_PLT;
2279 1.1 christos }
2280 1.1 christos else
2281 1.1 christos {
2282 1.1 christos (*info->callbacks->warning)
2283 1.1 christos (info, _("@pltoff reloc against local symbol"), 0,
2284 1.1 christos abfd, 0, (bfd_vma) 0);
2285 1.1 christos }
2286 1.1 christos break;
2287 1.1 christos
2288 1.1 christos case R_IA64_PCREL21B:
2289 1.1 christos case R_IA64_PCREL60B:
2290 1.1 christos /* Depending on where this symbol is defined, we may or may not
2291 1.1 christos need a full plt entry. Only skip if we know we'll not need
2292 1.1 christos the entry -- static or symbolic, and the symbol definition
2293 1.1 christos has already been seen. */
2294 1.1 christos if (maybe_dynamic && rel->r_addend == 0)
2295 1.1 christos need_entry = NEED_FULL_PLT;
2296 1.1 christos break;
2297 1.1 christos
2298 1.1 christos case R_IA64_IMM14:
2299 1.1 christos case R_IA64_IMM22:
2300 1.1 christos case R_IA64_IMM64:
2301 1.1 christos case R_IA64_DIR32MSB:
2302 1.1 christos case R_IA64_DIR32LSB:
2303 1.1 christos case R_IA64_DIR64MSB:
2304 1.1 christos case R_IA64_DIR64LSB:
2305 1.1 christos /* Shared objects will always need at least a REL relocation. */
2306 1.1 christos if (info->shared || maybe_dynamic)
2307 1.1 christos need_entry = NEED_DYNREL;
2308 1.1 christos break;
2309 1.1 christos
2310 1.1 christos case R_IA64_IPLTMSB:
2311 1.1 christos case R_IA64_IPLTLSB:
2312 1.1 christos /* Shared objects will always need at least a REL relocation. */
2313 1.1 christos if (info->shared || maybe_dynamic)
2314 1.1 christos need_entry = NEED_DYNREL;
2315 1.1 christos break;
2316 1.1 christos
2317 1.1 christos case R_IA64_PCREL22:
2318 1.1 christos case R_IA64_PCREL64I:
2319 1.1 christos case R_IA64_PCREL32MSB:
2320 1.1 christos case R_IA64_PCREL32LSB:
2321 1.1 christos case R_IA64_PCREL64MSB:
2322 1.1 christos case R_IA64_PCREL64LSB:
2323 1.1 christos if (maybe_dynamic)
2324 1.1 christos need_entry = NEED_DYNREL;
2325 1.1 christos break;
2326 1.1 christos }
2327 1.1 christos
2328 1.1 christos if (!need_entry)
2329 1.1 christos continue;
2330 1.1 christos
2331 1.1 christos if ((need_entry & NEED_FPTR) != 0
2332 1.1 christos && rel->r_addend)
2333 1.1 christos {
2334 1.1 christos (*info->callbacks->warning)
2335 1.1 christos (info, _("non-zero addend in @fptr reloc"), 0,
2336 1.1 christos abfd, 0, (bfd_vma) 0);
2337 1.1 christos }
2338 1.1 christos
2339 1.1 christos if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL)
2340 1.1 christos return FALSE;
2341 1.1 christos }
2342 1.1 christos
2343 1.1 christos /* Now, we only do lookup without insertion, which is very fast
2344 1.1 christos with the modified get_dyn_sym_info. */
2345 1.1 christos for (rel = relocs; rel < relend; ++rel)
2346 1.1 christos {
2347 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
2348 1.1 christos int dynrel_type = R_IA64_NONE;
2349 1.1 christos
2350 1.1 christos r_symndx = ELFNN_R_SYM (rel->r_info);
2351 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
2352 1.1 christos {
2353 1.1 christos /* We're dealing with a global symbol -- find its hash entry
2354 1.1 christos and mark it as being referenced. */
2355 1.1 christos long indx = r_symndx - symtab_hdr->sh_info;
2356 1.1 christos h = elf_sym_hashes (abfd)[indx];
2357 1.1 christos while (h->root.type == bfd_link_hash_indirect
2358 1.1 christos || h->root.type == bfd_link_hash_warning)
2359 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2360 1.1 christos
2361 1.1 christos h->ref_regular = 1;
2362 1.1 christos }
2363 1.1 christos else
2364 1.1 christos h = NULL;
2365 1.1 christos
2366 1.1 christos /* We can only get preliminary data on whether a symbol is
2367 1.1 christos locally or externally defined, as not all of the input files
2368 1.1 christos have yet been processed. Do something with what we know, as
2369 1.1 christos this may help reduce memory usage and processing time later. */
2370 1.1 christos maybe_dynamic = (h && ((!info->executable
2371 1.1 christos && (!SYMBOLIC_BIND (info, h)
2372 1.1 christos || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2373 1.1 christos || !h->def_regular
2374 1.1 christos || h->root.type == bfd_link_hash_defweak));
2375 1.1 christos
2376 1.1 christos need_entry = 0;
2377 1.1 christos switch (ELFNN_R_TYPE (rel->r_info))
2378 1.1 christos {
2379 1.1 christos case R_IA64_TPREL64MSB:
2380 1.1 christos case R_IA64_TPREL64LSB:
2381 1.1 christos if (info->shared || maybe_dynamic)
2382 1.1 christos need_entry = NEED_DYNREL;
2383 1.1 christos dynrel_type = R_IA64_TPREL64LSB;
2384 1.1 christos if (info->shared)
2385 1.1 christos info->flags |= DF_STATIC_TLS;
2386 1.1 christos break;
2387 1.1 christos
2388 1.1 christos case R_IA64_LTOFF_TPREL22:
2389 1.1 christos need_entry = NEED_TPREL;
2390 1.1 christos if (info->shared)
2391 1.1 christos info->flags |= DF_STATIC_TLS;
2392 1.1 christos break;
2393 1.1 christos
2394 1.1 christos case R_IA64_DTPREL32MSB:
2395 1.1 christos case R_IA64_DTPREL32LSB:
2396 1.1 christos case R_IA64_DTPREL64MSB:
2397 1.1 christos case R_IA64_DTPREL64LSB:
2398 1.1 christos if (info->shared || maybe_dynamic)
2399 1.1 christos need_entry = NEED_DYNREL;
2400 1.1 christos dynrel_type = R_IA64_DTPRELNNLSB;
2401 1.1 christos break;
2402 1.1 christos
2403 1.1 christos case R_IA64_LTOFF_DTPREL22:
2404 1.1 christos need_entry = NEED_DTPREL;
2405 1.1 christos break;
2406 1.1 christos
2407 1.1 christos case R_IA64_DTPMOD64MSB:
2408 1.1 christos case R_IA64_DTPMOD64LSB:
2409 1.1 christos if (info->shared || maybe_dynamic)
2410 1.1 christos need_entry = NEED_DYNREL;
2411 1.1 christos dynrel_type = R_IA64_DTPMOD64LSB;
2412 1.1 christos break;
2413 1.1 christos
2414 1.1 christos case R_IA64_LTOFF_DTPMOD22:
2415 1.1 christos need_entry = NEED_DTPMOD;
2416 1.1 christos break;
2417 1.1 christos
2418 1.1 christos case R_IA64_LTOFF_FPTR22:
2419 1.1 christos case R_IA64_LTOFF_FPTR64I:
2420 1.1 christos case R_IA64_LTOFF_FPTR32MSB:
2421 1.1 christos case R_IA64_LTOFF_FPTR32LSB:
2422 1.1 christos case R_IA64_LTOFF_FPTR64MSB:
2423 1.1 christos case R_IA64_LTOFF_FPTR64LSB:
2424 1.1 christos need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2425 1.1 christos break;
2426 1.1 christos
2427 1.1 christos case R_IA64_FPTR64I:
2428 1.1 christos case R_IA64_FPTR32MSB:
2429 1.1 christos case R_IA64_FPTR32LSB:
2430 1.1 christos case R_IA64_FPTR64MSB:
2431 1.1 christos case R_IA64_FPTR64LSB:
2432 1.1 christos if (info->shared || h)
2433 1.1 christos need_entry = NEED_FPTR | NEED_DYNREL;
2434 1.1 christos else
2435 1.1 christos need_entry = NEED_FPTR;
2436 1.1 christos dynrel_type = R_IA64_FPTRNNLSB;
2437 1.1 christos break;
2438 1.1 christos
2439 1.1 christos case R_IA64_LTOFF22:
2440 1.1 christos case R_IA64_LTOFF64I:
2441 1.1 christos need_entry = NEED_GOT;
2442 1.1 christos break;
2443 1.1 christos
2444 1.1 christos case R_IA64_LTOFF22X:
2445 1.1 christos need_entry = NEED_GOTX;
2446 1.1 christos break;
2447 1.1 christos
2448 1.1 christos case R_IA64_PLTOFF22:
2449 1.1 christos case R_IA64_PLTOFF64I:
2450 1.1 christos case R_IA64_PLTOFF64MSB:
2451 1.1 christos case R_IA64_PLTOFF64LSB:
2452 1.1 christos need_entry = NEED_PLTOFF;
2453 1.1 christos if (h)
2454 1.1 christos {
2455 1.1 christos if (maybe_dynamic)
2456 1.1 christos need_entry |= NEED_MIN_PLT;
2457 1.1 christos }
2458 1.1 christos break;
2459 1.1 christos
2460 1.1 christos case R_IA64_PCREL21B:
2461 1.1 christos case R_IA64_PCREL60B:
2462 1.1 christos /* Depending on where this symbol is defined, we may or may not
2463 1.1 christos need a full plt entry. Only skip if we know we'll not need
2464 1.1 christos the entry -- static or symbolic, and the symbol definition
2465 1.1 christos has already been seen. */
2466 1.1 christos if (maybe_dynamic && rel->r_addend == 0)
2467 1.1 christos need_entry = NEED_FULL_PLT;
2468 1.1 christos break;
2469 1.1 christos
2470 1.1 christos case R_IA64_IMM14:
2471 1.1 christos case R_IA64_IMM22:
2472 1.1 christos case R_IA64_IMM64:
2473 1.1 christos case R_IA64_DIR32MSB:
2474 1.1 christos case R_IA64_DIR32LSB:
2475 1.1 christos case R_IA64_DIR64MSB:
2476 1.1 christos case R_IA64_DIR64LSB:
2477 1.1 christos /* Shared objects will always need at least a REL relocation. */
2478 1.1 christos if (info->shared || maybe_dynamic)
2479 1.1 christos need_entry = NEED_DYNREL;
2480 1.1 christos dynrel_type = R_IA64_DIRNNLSB;
2481 1.1 christos break;
2482 1.1 christos
2483 1.1 christos case R_IA64_IPLTMSB:
2484 1.1 christos case R_IA64_IPLTLSB:
2485 1.1 christos /* Shared objects will always need at least a REL relocation. */
2486 1.1 christos if (info->shared || maybe_dynamic)
2487 1.1 christos need_entry = NEED_DYNREL;
2488 1.1 christos dynrel_type = R_IA64_IPLTLSB;
2489 1.1 christos break;
2490 1.1 christos
2491 1.1 christos case R_IA64_PCREL22:
2492 1.1 christos case R_IA64_PCREL64I:
2493 1.1 christos case R_IA64_PCREL32MSB:
2494 1.1 christos case R_IA64_PCREL32LSB:
2495 1.1 christos case R_IA64_PCREL64MSB:
2496 1.1 christos case R_IA64_PCREL64LSB:
2497 1.1 christos if (maybe_dynamic)
2498 1.1 christos need_entry = NEED_DYNREL;
2499 1.1 christos dynrel_type = R_IA64_PCRELNNLSB;
2500 1.1 christos break;
2501 1.1 christos }
2502 1.1 christos
2503 1.1 christos if (!need_entry)
2504 1.1 christos continue;
2505 1.1 christos
2506 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE);
2507 1.1 christos
2508 1.1 christos /* Record whether or not this is a local symbol. */
2509 1.1 christos dyn_i->h = h;
2510 1.1 christos
2511 1.1 christos /* Create what's needed. */
2512 1.1 christos if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2513 1.1 christos | NEED_DTPMOD | NEED_DTPREL))
2514 1.1 christos {
2515 1.1 christos if (!got)
2516 1.1 christos {
2517 1.1 christos got = get_got (abfd, info, ia64_info);
2518 1.1 christos if (!got)
2519 1.1 christos return FALSE;
2520 1.1 christos }
2521 1.1 christos if (need_entry & NEED_GOT)
2522 1.1 christos dyn_i->want_got = 1;
2523 1.1 christos if (need_entry & NEED_GOTX)
2524 1.1 christos dyn_i->want_gotx = 1;
2525 1.1 christos if (need_entry & NEED_TPREL)
2526 1.1 christos dyn_i->want_tprel = 1;
2527 1.1 christos if (need_entry & NEED_DTPMOD)
2528 1.1 christos dyn_i->want_dtpmod = 1;
2529 1.1 christos if (need_entry & NEED_DTPREL)
2530 1.1 christos dyn_i->want_dtprel = 1;
2531 1.1 christos }
2532 1.1 christos if (need_entry & NEED_FPTR)
2533 1.1 christos {
2534 1.1 christos if (!fptr)
2535 1.1 christos {
2536 1.1 christos fptr = get_fptr (abfd, info, ia64_info);
2537 1.1 christos if (!fptr)
2538 1.1 christos return FALSE;
2539 1.1 christos }
2540 1.1 christos
2541 1.1 christos /* FPTRs for shared libraries are allocated by the dynamic
2542 1.1 christos linker. Make sure this local symbol will appear in the
2543 1.1 christos dynamic symbol table. */
2544 1.1 christos if (!h && info->shared)
2545 1.1 christos {
2546 1.1 christos if (! (bfd_elf_link_record_local_dynamic_symbol
2547 1.1 christos (info, abfd, (long) r_symndx)))
2548 1.1 christos return FALSE;
2549 1.1 christos }
2550 1.1 christos
2551 1.1 christos dyn_i->want_fptr = 1;
2552 1.1 christos }
2553 1.1 christos if (need_entry & NEED_LTOFF_FPTR)
2554 1.1 christos dyn_i->want_ltoff_fptr = 1;
2555 1.1 christos if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2556 1.1 christos {
2557 1.1 christos if (!ia64_info->root.dynobj)
2558 1.1 christos ia64_info->root.dynobj = abfd;
2559 1.1 christos h->needs_plt = 1;
2560 1.1 christos dyn_i->want_plt = 1;
2561 1.1 christos }
2562 1.1 christos if (need_entry & NEED_FULL_PLT)
2563 1.1 christos dyn_i->want_plt2 = 1;
2564 1.1 christos if (need_entry & NEED_PLTOFF)
2565 1.1 christos {
2566 1.1 christos /* This is needed here, in case @pltoff is used in a non-shared
2567 1.1 christos link. */
2568 1.1 christos if (!pltoff)
2569 1.1 christos {
2570 1.1 christos pltoff = get_pltoff (abfd, info, ia64_info);
2571 1.1 christos if (!pltoff)
2572 1.1 christos return FALSE;
2573 1.1 christos }
2574 1.1 christos
2575 1.1 christos dyn_i->want_pltoff = 1;
2576 1.1 christos }
2577 1.1 christos if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2578 1.1 christos {
2579 1.1 christos if (!srel)
2580 1.1 christos {
2581 1.1 christos srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2582 1.1 christos if (!srel)
2583 1.1 christos return FALSE;
2584 1.1 christos }
2585 1.1 christos if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2586 1.1 christos (sec->flags & SEC_READONLY) != 0))
2587 1.1 christos return FALSE;
2588 1.1 christos }
2589 1.1 christos }
2590 1.1 christos
2591 1.1 christos return TRUE;
2592 1.1 christos }
2593 1.1 christos
2594 1.1 christos /* For cleanliness, and potentially faster dynamic loading, allocate
2595 1.1 christos external GOT entries first. */
2596 1.1 christos
2597 1.1 christos static bfd_boolean
2598 1.1 christos allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2599 1.1 christos void * data)
2600 1.1 christos {
2601 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2602 1.1 christos
2603 1.1 christos if ((dyn_i->want_got || dyn_i->want_gotx)
2604 1.1 christos && ! dyn_i->want_fptr
2605 1.1 christos && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2606 1.1 christos {
2607 1.1 christos dyn_i->got_offset = x->ofs;
2608 1.1 christos x->ofs += 8;
2609 1.1 christos }
2610 1.1 christos if (dyn_i->want_tprel)
2611 1.1 christos {
2612 1.1 christos dyn_i->tprel_offset = x->ofs;
2613 1.1 christos x->ofs += 8;
2614 1.1 christos }
2615 1.1 christos if (dyn_i->want_dtpmod)
2616 1.1 christos {
2617 1.1 christos if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2618 1.1 christos {
2619 1.1 christos dyn_i->dtpmod_offset = x->ofs;
2620 1.1 christos x->ofs += 8;
2621 1.1 christos }
2622 1.1 christos else
2623 1.1 christos {
2624 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2625 1.1 christos
2626 1.1 christos ia64_info = elfNN_ia64_hash_table (x->info);
2627 1.1 christos if (ia64_info == NULL)
2628 1.1 christos return FALSE;
2629 1.1 christos
2630 1.1 christos if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2631 1.1 christos {
2632 1.1 christos ia64_info->self_dtpmod_offset = x->ofs;
2633 1.1 christos x->ofs += 8;
2634 1.1 christos }
2635 1.1 christos dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2636 1.1 christos }
2637 1.1 christos }
2638 1.1 christos if (dyn_i->want_dtprel)
2639 1.1 christos {
2640 1.1 christos dyn_i->dtprel_offset = x->ofs;
2641 1.1 christos x->ofs += 8;
2642 1.1 christos }
2643 1.1 christos return TRUE;
2644 1.1 christos }
2645 1.1 christos
2646 1.1 christos /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2647 1.1 christos
2648 1.1 christos static bfd_boolean
2649 1.1 christos allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2650 1.1 christos void * data)
2651 1.1 christos {
2652 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2653 1.1 christos
2654 1.1 christos if (dyn_i->want_got
2655 1.1 christos && dyn_i->want_fptr
2656 1.1 christos && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
2657 1.1 christos {
2658 1.1 christos dyn_i->got_offset = x->ofs;
2659 1.1 christos x->ofs += 8;
2660 1.1 christos }
2661 1.1 christos return TRUE;
2662 1.1 christos }
2663 1.1 christos
2664 1.1 christos /* Lastly, allocate all the GOT entries for local data. */
2665 1.1 christos
2666 1.1 christos static bfd_boolean
2667 1.1 christos allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
2668 1.1 christos void * data)
2669 1.1 christos {
2670 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2671 1.1 christos
2672 1.1 christos if ((dyn_i->want_got || dyn_i->want_gotx)
2673 1.1 christos && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2674 1.1 christos {
2675 1.1 christos dyn_i->got_offset = x->ofs;
2676 1.1 christos x->ofs += 8;
2677 1.1 christos }
2678 1.1 christos return TRUE;
2679 1.1 christos }
2680 1.1 christos
2681 1.1 christos /* Search for the index of a global symbol in it's defining object file. */
2682 1.1 christos
2683 1.1 christos static long
2684 1.1 christos global_sym_index (struct elf_link_hash_entry *h)
2685 1.1 christos {
2686 1.1 christos struct elf_link_hash_entry **p;
2687 1.1 christos bfd *obj;
2688 1.1 christos
2689 1.1 christos BFD_ASSERT (h->root.type == bfd_link_hash_defined
2690 1.1 christos || h->root.type == bfd_link_hash_defweak);
2691 1.1 christos
2692 1.1 christos obj = h->root.u.def.section->owner;
2693 1.1 christos for (p = elf_sym_hashes (obj); *p != h; ++p)
2694 1.1 christos continue;
2695 1.1 christos
2696 1.1 christos return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2697 1.1 christos }
2698 1.1 christos
2699 1.1 christos /* Allocate function descriptors. We can do these for every function
2700 1.1 christos in a main executable that is not exported. */
2701 1.1 christos
2702 1.1 christos static bfd_boolean
2703 1.1 christos allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data)
2704 1.1 christos {
2705 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2706 1.1 christos
2707 1.1 christos if (dyn_i->want_fptr)
2708 1.1 christos {
2709 1.1 christos struct elf_link_hash_entry *h = dyn_i->h;
2710 1.1 christos
2711 1.1 christos if (h)
2712 1.1 christos while (h->root.type == bfd_link_hash_indirect
2713 1.1 christos || h->root.type == bfd_link_hash_warning)
2714 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2715 1.1 christos
2716 1.1 christos if (!x->info->executable
2717 1.1 christos && (!h
2718 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2719 1.1 christos || (h->root.type != bfd_link_hash_undefweak
2720 1.1 christos && h->root.type != bfd_link_hash_undefined)))
2721 1.1 christos {
2722 1.1 christos if (h && h->dynindx == -1)
2723 1.1 christos {
2724 1.1 christos BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2725 1.1 christos || (h->root.type == bfd_link_hash_defweak));
2726 1.1 christos
2727 1.1 christos if (!bfd_elf_link_record_local_dynamic_symbol
2728 1.1 christos (x->info, h->root.u.def.section->owner,
2729 1.1 christos global_sym_index (h)))
2730 1.1 christos return FALSE;
2731 1.1 christos }
2732 1.1 christos
2733 1.1 christos dyn_i->want_fptr = 0;
2734 1.1 christos }
2735 1.1 christos else if (h == NULL || h->dynindx == -1)
2736 1.1 christos {
2737 1.1 christos dyn_i->fptr_offset = x->ofs;
2738 1.1 christos x->ofs += 16;
2739 1.1 christos }
2740 1.1 christos else
2741 1.1 christos dyn_i->want_fptr = 0;
2742 1.1 christos }
2743 1.1 christos return TRUE;
2744 1.1 christos }
2745 1.1 christos
2746 1.1 christos /* Allocate all the minimal PLT entries. */
2747 1.1 christos
2748 1.1 christos static bfd_boolean
2749 1.1 christos allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2750 1.1 christos void * data)
2751 1.1 christos {
2752 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2753 1.1 christos
2754 1.1 christos if (dyn_i->want_plt)
2755 1.1 christos {
2756 1.1 christos struct elf_link_hash_entry *h = dyn_i->h;
2757 1.1 christos
2758 1.1 christos if (h)
2759 1.1 christos while (h->root.type == bfd_link_hash_indirect
2760 1.1 christos || h->root.type == bfd_link_hash_warning)
2761 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2762 1.1 christos
2763 1.1 christos /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2764 1.1 christos if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2765 1.1 christos {
2766 1.1 christos bfd_size_type offset = x->ofs;
2767 1.1 christos if (offset == 0)
2768 1.1 christos offset = PLT_HEADER_SIZE;
2769 1.1 christos dyn_i->plt_offset = offset;
2770 1.1 christos x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2771 1.1 christos
2772 1.1 christos dyn_i->want_pltoff = 1;
2773 1.1 christos }
2774 1.1 christos else
2775 1.1 christos {
2776 1.1 christos dyn_i->want_plt = 0;
2777 1.1 christos dyn_i->want_plt2 = 0;
2778 1.1 christos }
2779 1.1 christos }
2780 1.1 christos return TRUE;
2781 1.1 christos }
2782 1.1 christos
2783 1.1 christos /* Allocate all the full PLT entries. */
2784 1.1 christos
2785 1.1 christos static bfd_boolean
2786 1.1 christos allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2787 1.1 christos void * data)
2788 1.1 christos {
2789 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2790 1.1 christos
2791 1.1 christos if (dyn_i->want_plt2)
2792 1.1 christos {
2793 1.1 christos struct elf_link_hash_entry *h = dyn_i->h;
2794 1.1 christos bfd_size_type ofs = x->ofs;
2795 1.1 christos
2796 1.1 christos dyn_i->plt2_offset = ofs;
2797 1.1 christos x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2798 1.1 christos
2799 1.1 christos while (h->root.type == bfd_link_hash_indirect
2800 1.1 christos || h->root.type == bfd_link_hash_warning)
2801 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2802 1.1 christos dyn_i->h->plt.offset = ofs;
2803 1.1 christos }
2804 1.1 christos return TRUE;
2805 1.1 christos }
2806 1.1 christos
2807 1.1 christos /* Allocate all the PLTOFF entries requested by relocations and
2808 1.1 christos plt entries. We can't share space with allocated FPTR entries,
2809 1.1 christos because the latter are not necessarily addressable by the GP.
2810 1.1 christos ??? Relaxation might be able to determine that they are. */
2811 1.1 christos
2812 1.1 christos static bfd_boolean
2813 1.1 christos allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2814 1.1 christos void * data)
2815 1.1 christos {
2816 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2817 1.1 christos
2818 1.1 christos if (dyn_i->want_pltoff)
2819 1.1 christos {
2820 1.1 christos dyn_i->pltoff_offset = x->ofs;
2821 1.1 christos x->ofs += 16;
2822 1.1 christos }
2823 1.1 christos return TRUE;
2824 1.1 christos }
2825 1.1 christos
2826 1.1 christos /* Allocate dynamic relocations for those symbols that turned out
2827 1.1 christos to be dynamic. */
2828 1.1 christos
2829 1.1 christos static bfd_boolean
2830 1.1 christos allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
2831 1.1 christos void * data)
2832 1.1 christos {
2833 1.1 christos struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2834 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2835 1.1 christos struct elfNN_ia64_dyn_reloc_entry *rent;
2836 1.1 christos bfd_boolean dynamic_symbol, shared, resolved_zero;
2837 1.1 christos
2838 1.1 christos ia64_info = elfNN_ia64_hash_table (x->info);
2839 1.1 christos if (ia64_info == NULL)
2840 1.1 christos return FALSE;
2841 1.1 christos
2842 1.1 christos /* Note that this can't be used in relation to FPTR relocs below. */
2843 1.1 christos dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2844 1.1 christos
2845 1.1 christos shared = x->info->shared;
2846 1.1 christos resolved_zero = (dyn_i->h
2847 1.1 christos && ELF_ST_VISIBILITY (dyn_i->h->other)
2848 1.1 christos && dyn_i->h->root.type == bfd_link_hash_undefweak);
2849 1.1 christos
2850 1.1 christos /* Take care of the GOT and PLT relocations. */
2851 1.1 christos
2852 1.1 christos if ((!resolved_zero
2853 1.1 christos && (dynamic_symbol || shared)
2854 1.1 christos && (dyn_i->want_got || dyn_i->want_gotx))
2855 1.1 christos || (dyn_i->want_ltoff_fptr
2856 1.1 christos && dyn_i->h
2857 1.1 christos && dyn_i->h->dynindx != -1))
2858 1.1 christos {
2859 1.1 christos if (!dyn_i->want_ltoff_fptr
2860 1.1 christos || !x->info->pie
2861 1.1 christos || dyn_i->h == NULL
2862 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak)
2863 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2864 1.1 christos }
2865 1.1 christos if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2866 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2867 1.1 christos if (dynamic_symbol && dyn_i->want_dtpmod)
2868 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2869 1.1 christos if (dynamic_symbol && dyn_i->want_dtprel)
2870 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
2871 1.1 christos
2872 1.1 christos if (x->only_got)
2873 1.1 christos return TRUE;
2874 1.1 christos
2875 1.1 christos if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2876 1.1 christos {
2877 1.1 christos if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2878 1.1 christos ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2879 1.1 christos }
2880 1.1 christos
2881 1.1 christos if (!resolved_zero && dyn_i->want_pltoff)
2882 1.1 christos {
2883 1.1 christos bfd_size_type t = 0;
2884 1.1 christos
2885 1.1 christos /* Dynamic symbols get one IPLT relocation. Local symbols in
2886 1.1 christos shared libraries get two REL relocations. Local symbols in
2887 1.1 christos main applications get nothing. */
2888 1.1 christos if (dynamic_symbol)
2889 1.1 christos t = sizeof (ElfNN_External_Rela);
2890 1.1 christos else if (shared)
2891 1.1 christos t = 2 * sizeof (ElfNN_External_Rela);
2892 1.1 christos
2893 1.1 christos ia64_info->rel_pltoff_sec->size += t;
2894 1.1 christos }
2895 1.1 christos
2896 1.1 christos /* Take care of the normal data relocations. */
2897 1.1 christos
2898 1.1 christos for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2899 1.1 christos {
2900 1.1 christos int count = rent->count;
2901 1.1 christos
2902 1.1 christos switch (rent->type)
2903 1.1 christos {
2904 1.1 christos case R_IA64_FPTR32LSB:
2905 1.1 christos case R_IA64_FPTR64LSB:
2906 1.1 christos /* Allocate one iff !want_fptr and not PIE, which by this point
2907 1.1 christos will be true only if we're actually allocating one statically
2908 1.1 christos in the main executable. Position independent executables
2909 1.1 christos need a relative reloc. */
2910 1.1 christos if (dyn_i->want_fptr && !x->info->pie)
2911 1.1 christos continue;
2912 1.1 christos break;
2913 1.1 christos case R_IA64_PCREL32LSB:
2914 1.1 christos case R_IA64_PCREL64LSB:
2915 1.1 christos if (!dynamic_symbol)
2916 1.1 christos continue;
2917 1.1 christos break;
2918 1.1 christos case R_IA64_DIR32LSB:
2919 1.1 christos case R_IA64_DIR64LSB:
2920 1.1 christos if (!dynamic_symbol && !shared)
2921 1.1 christos continue;
2922 1.1 christos break;
2923 1.1 christos case R_IA64_IPLTLSB:
2924 1.1 christos if (!dynamic_symbol && !shared)
2925 1.1 christos continue;
2926 1.1 christos /* Use two REL relocations for IPLT relocations
2927 1.1 christos against local symbols. */
2928 1.1 christos if (!dynamic_symbol)
2929 1.1 christos count *= 2;
2930 1.1 christos break;
2931 1.1 christos case R_IA64_DTPREL32LSB:
2932 1.1 christos case R_IA64_TPREL64LSB:
2933 1.1 christos case R_IA64_DTPREL64LSB:
2934 1.1 christos case R_IA64_DTPMOD64LSB:
2935 1.1 christos break;
2936 1.1 christos default:
2937 1.1 christos abort ();
2938 1.1 christos }
2939 1.1 christos if (rent->reltext)
2940 1.1 christos ia64_info->reltext = 1;
2941 1.1 christos rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2942 1.1 christos }
2943 1.1 christos
2944 1.1 christos return TRUE;
2945 1.1 christos }
2946 1.1 christos
2947 1.1 christos static bfd_boolean
2948 1.1 christos elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2949 1.1 christos struct elf_link_hash_entry *h)
2950 1.1 christos {
2951 1.1 christos /* ??? Undefined symbols with PLT entries should be re-defined
2952 1.1 christos to be the PLT entry. */
2953 1.1 christos
2954 1.1 christos /* If this is a weak symbol, and there is a real definition, the
2955 1.1 christos processor independent code will have arranged for us to see the
2956 1.1 christos real definition first, and we can just use the same value. */
2957 1.1 christos if (h->u.weakdef != NULL)
2958 1.1 christos {
2959 1.1 christos BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2960 1.1 christos || h->u.weakdef->root.type == bfd_link_hash_defweak);
2961 1.1 christos h->root.u.def.section = h->u.weakdef->root.u.def.section;
2962 1.1 christos h->root.u.def.value = h->u.weakdef->root.u.def.value;
2963 1.1 christos return TRUE;
2964 1.1 christos }
2965 1.1 christos
2966 1.1 christos /* If this is a reference to a symbol defined by a dynamic object which
2967 1.1 christos is not a function, we might allocate the symbol in our .dynbss section
2968 1.1 christos and allocate a COPY dynamic relocation.
2969 1.1 christos
2970 1.1 christos But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2971 1.1 christos of hackery. */
2972 1.1 christos
2973 1.1 christos return TRUE;
2974 1.1 christos }
2975 1.1 christos
2976 1.1 christos static bfd_boolean
2977 1.1 christos elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2978 1.1 christos struct bfd_link_info *info)
2979 1.1 christos {
2980 1.1 christos struct elfNN_ia64_allocate_data data;
2981 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
2982 1.1 christos asection *sec;
2983 1.1 christos bfd *dynobj;
2984 1.1 christos bfd_boolean relplt = FALSE;
2985 1.1 christos
2986 1.1 christos dynobj = elf_hash_table(info)->dynobj;
2987 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
2988 1.1 christos if (ia64_info == NULL)
2989 1.1 christos return FALSE;
2990 1.1 christos ia64_info->self_dtpmod_offset = (bfd_vma) -1;
2991 1.1 christos BFD_ASSERT(dynobj != NULL);
2992 1.1 christos data.info = info;
2993 1.1 christos
2994 1.1 christos /* Set the contents of the .interp section to the interpreter. */
2995 1.1 christos if (ia64_info->root.dynamic_sections_created
2996 1.1 christos && info->executable)
2997 1.1 christos {
2998 1.1 christos sec = bfd_get_linker_section (dynobj, ".interp");
2999 1.1 christos BFD_ASSERT (sec != NULL);
3000 1.1 christos sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3001 1.1 christos sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
3002 1.1 christos }
3003 1.1 christos
3004 1.1 christos /* Allocate the GOT entries. */
3005 1.1 christos
3006 1.1 christos if (ia64_info->root.sgot)
3007 1.1 christos {
3008 1.1 christos data.ofs = 0;
3009 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
3010 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
3011 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
3012 1.1 christos ia64_info->root.sgot->size = data.ofs;
3013 1.1 christos }
3014 1.1 christos
3015 1.1 christos /* Allocate the FPTR entries. */
3016 1.1 christos
3017 1.1 christos if (ia64_info->fptr_sec)
3018 1.1 christos {
3019 1.1 christos data.ofs = 0;
3020 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
3021 1.1 christos ia64_info->fptr_sec->size = data.ofs;
3022 1.1 christos }
3023 1.1 christos
3024 1.1 christos /* Now that we've seen all of the input files, we can decide which
3025 1.1 christos symbols need plt entries. Allocate the minimal PLT entries first.
3026 1.1 christos We do this even though dynamic_sections_created may be FALSE, because
3027 1.1 christos this has the side-effect of clearing want_plt and want_plt2. */
3028 1.1 christos
3029 1.1 christos data.ofs = 0;
3030 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
3031 1.1 christos
3032 1.1 christos ia64_info->minplt_entries = 0;
3033 1.1 christos if (data.ofs)
3034 1.1 christos {
3035 1.1 christos ia64_info->minplt_entries
3036 1.1 christos = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
3037 1.1 christos }
3038 1.1 christos
3039 1.1 christos /* Align the pointer for the plt2 entries. */
3040 1.1 christos data.ofs = (data.ofs + 31) & (bfd_vma) -32;
3041 1.1 christos
3042 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
3043 1.1 christos if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
3044 1.1 christos {
3045 1.1 christos /* FIXME: we always reserve the memory for dynamic linker even if
3046 1.1 christos there are no PLT entries since dynamic linker may assume the
3047 1.1 christos reserved memory always exists. */
3048 1.1 christos
3049 1.1 christos BFD_ASSERT (ia64_info->root.dynamic_sections_created);
3050 1.1 christos
3051 1.1 christos ia64_info->root.splt->size = data.ofs;
3052 1.1 christos
3053 1.1 christos /* If we've got a .plt, we need some extra memory for the dynamic
3054 1.1 christos linker. We stuff these in .got.plt. */
3055 1.1 christos sec = bfd_get_linker_section (dynobj, ".got.plt");
3056 1.1 christos sec->size = 8 * PLT_RESERVED_WORDS;
3057 1.1 christos }
3058 1.1 christos
3059 1.1 christos /* Allocate the PLTOFF entries. */
3060 1.1 christos
3061 1.1 christos if (ia64_info->pltoff_sec)
3062 1.1 christos {
3063 1.1 christos data.ofs = 0;
3064 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
3065 1.1 christos ia64_info->pltoff_sec->size = data.ofs;
3066 1.1 christos }
3067 1.1 christos
3068 1.1 christos if (ia64_info->root.dynamic_sections_created)
3069 1.1 christos {
3070 1.1 christos /* Allocate space for the dynamic relocations that turned out to be
3071 1.1 christos required. */
3072 1.1 christos
3073 1.1 christos if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
3074 1.1 christos ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
3075 1.1 christos data.only_got = FALSE;
3076 1.1 christos elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
3077 1.1 christos }
3078 1.1 christos
3079 1.1 christos /* We have now determined the sizes of the various dynamic sections.
3080 1.1 christos Allocate memory for them. */
3081 1.1 christos for (sec = dynobj->sections; sec != NULL; sec = sec->next)
3082 1.1 christos {
3083 1.1 christos bfd_boolean strip;
3084 1.1 christos
3085 1.1 christos if (!(sec->flags & SEC_LINKER_CREATED))
3086 1.1 christos continue;
3087 1.1 christos
3088 1.1 christos /* If we don't need this section, strip it from the output file.
3089 1.1 christos There were several sections primarily related to dynamic
3090 1.1 christos linking that must be create before the linker maps input
3091 1.1 christos sections to output sections. The linker does that before
3092 1.1 christos bfd_elf_size_dynamic_sections is called, and it is that
3093 1.1 christos function which decides whether anything needs to go into
3094 1.1 christos these sections. */
3095 1.1 christos
3096 1.1 christos strip = (sec->size == 0);
3097 1.1 christos
3098 1.1 christos if (sec == ia64_info->root.sgot)
3099 1.1 christos strip = FALSE;
3100 1.1 christos else if (sec == ia64_info->root.srelgot)
3101 1.1 christos {
3102 1.1 christos if (strip)
3103 1.1 christos ia64_info->root.srelgot = NULL;
3104 1.1 christos else
3105 1.1 christos /* We use the reloc_count field as a counter if we need to
3106 1.1 christos copy relocs into the output file. */
3107 1.1 christos sec->reloc_count = 0;
3108 1.1 christos }
3109 1.1 christos else if (sec == ia64_info->fptr_sec)
3110 1.1 christos {
3111 1.1 christos if (strip)
3112 1.1 christos ia64_info->fptr_sec = NULL;
3113 1.1 christos }
3114 1.1 christos else if (sec == ia64_info->rel_fptr_sec)
3115 1.1 christos {
3116 1.1 christos if (strip)
3117 1.1 christos ia64_info->rel_fptr_sec = NULL;
3118 1.1 christos else
3119 1.1 christos /* We use the reloc_count field as a counter if we need to
3120 1.1 christos copy relocs into the output file. */
3121 1.1 christos sec->reloc_count = 0;
3122 1.1 christos }
3123 1.1 christos else if (sec == ia64_info->root.splt)
3124 1.1 christos {
3125 1.1 christos if (strip)
3126 1.1 christos ia64_info->root.splt = NULL;
3127 1.1 christos }
3128 1.1 christos else if (sec == ia64_info->pltoff_sec)
3129 1.1 christos {
3130 1.1 christos if (strip)
3131 1.1 christos ia64_info->pltoff_sec = NULL;
3132 1.1 christos }
3133 1.1 christos else if (sec == ia64_info->rel_pltoff_sec)
3134 1.1 christos {
3135 1.1 christos if (strip)
3136 1.1 christos ia64_info->rel_pltoff_sec = NULL;
3137 1.1 christos else
3138 1.1 christos {
3139 1.1 christos relplt = TRUE;
3140 1.1 christos /* We use the reloc_count field as a counter if we need to
3141 1.1 christos copy relocs into the output file. */
3142 1.1 christos sec->reloc_count = 0;
3143 1.1 christos }
3144 1.1 christos }
3145 1.1 christos else
3146 1.1 christos {
3147 1.1 christos const char *name;
3148 1.1 christos
3149 1.1 christos /* It's OK to base decisions on the section name, because none
3150 1.1 christos of the dynobj section names depend upon the input files. */
3151 1.1 christos name = bfd_get_section_name (dynobj, sec);
3152 1.1 christos
3153 1.1 christos if (strcmp (name, ".got.plt") == 0)
3154 1.1 christos strip = FALSE;
3155 1.1 christos else if (CONST_STRNEQ (name, ".rel"))
3156 1.1 christos {
3157 1.1 christos if (!strip)
3158 1.1 christos {
3159 1.1 christos /* We use the reloc_count field as a counter if we need to
3160 1.1 christos copy relocs into the output file. */
3161 1.1 christos sec->reloc_count = 0;
3162 1.1 christos }
3163 1.1 christos }
3164 1.1 christos else
3165 1.1 christos continue;
3166 1.1 christos }
3167 1.1 christos
3168 1.1 christos if (strip)
3169 1.1 christos sec->flags |= SEC_EXCLUDE;
3170 1.1 christos else
3171 1.1 christos {
3172 1.1 christos /* Allocate memory for the section contents. */
3173 1.1 christos sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3174 1.1 christos if (sec->contents == NULL && sec->size != 0)
3175 1.1 christos return FALSE;
3176 1.1 christos }
3177 1.1 christos }
3178 1.1 christos
3179 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
3180 1.1 christos {
3181 1.1 christos /* Add some entries to the .dynamic section. We fill in the values
3182 1.1 christos later (in finish_dynamic_sections) but we must add the entries now
3183 1.1 christos so that we get the correct size for the .dynamic section. */
3184 1.1 christos
3185 1.1 christos if (info->executable)
3186 1.1 christos {
3187 1.1 christos /* The DT_DEBUG entry is filled in by the dynamic linker and used
3188 1.1 christos by the debugger. */
3189 1.1 christos #define add_dynamic_entry(TAG, VAL) \
3190 1.1 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3191 1.1 christos
3192 1.1 christos if (!add_dynamic_entry (DT_DEBUG, 0))
3193 1.1 christos return FALSE;
3194 1.1 christos }
3195 1.1 christos
3196 1.1 christos if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3197 1.1 christos return FALSE;
3198 1.1 christos if (!add_dynamic_entry (DT_PLTGOT, 0))
3199 1.1 christos return FALSE;
3200 1.1 christos
3201 1.1 christos if (relplt)
3202 1.1 christos {
3203 1.1 christos if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3204 1.1 christos || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3205 1.1 christos || !add_dynamic_entry (DT_JMPREL, 0))
3206 1.1 christos return FALSE;
3207 1.1 christos }
3208 1.1 christos
3209 1.1 christos if (!add_dynamic_entry (DT_RELA, 0)
3210 1.1 christos || !add_dynamic_entry (DT_RELASZ, 0)
3211 1.1 christos || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3212 1.1 christos return FALSE;
3213 1.1 christos
3214 1.1 christos if (ia64_info->reltext)
3215 1.1 christos {
3216 1.1 christos if (!add_dynamic_entry (DT_TEXTREL, 0))
3217 1.1 christos return FALSE;
3218 1.1 christos info->flags |= DF_TEXTREL;
3219 1.1 christos }
3220 1.1 christos }
3221 1.1 christos
3222 1.1 christos /* ??? Perhaps force __gp local. */
3223 1.1 christos
3224 1.1 christos return TRUE;
3225 1.1 christos }
3226 1.1 christos
3227 1.1 christos static void
3228 1.1 christos elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info,
3229 1.1 christos asection *sec, asection *srel,
3230 1.1 christos bfd_vma offset, unsigned int type,
3231 1.1 christos long dynindx, bfd_vma addend)
3232 1.1 christos {
3233 1.1 christos Elf_Internal_Rela outrel;
3234 1.1 christos bfd_byte *loc;
3235 1.1 christos
3236 1.1 christos BFD_ASSERT (dynindx != -1);
3237 1.1 christos outrel.r_info = ELFNN_R_INFO (dynindx, type);
3238 1.1 christos outrel.r_addend = addend;
3239 1.1 christos outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3240 1.1 christos if (outrel.r_offset >= (bfd_vma) -2)
3241 1.1 christos {
3242 1.1 christos /* Run for the hills. We shouldn't be outputting a relocation
3243 1.1 christos for this. So do what everyone else does and output a no-op. */
3244 1.1 christos outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3245 1.1 christos outrel.r_addend = 0;
3246 1.1 christos outrel.r_offset = 0;
3247 1.1 christos }
3248 1.1 christos else
3249 1.1 christos outrel.r_offset += sec->output_section->vma + sec->output_offset;
3250 1.1 christos
3251 1.1 christos loc = srel->contents;
3252 1.1 christos loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3253 1.1 christos bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3254 1.1 christos BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3255 1.1 christos }
3256 1.1 christos
3257 1.1 christos /* Store an entry for target address TARGET_ADDR in the linkage table
3258 1.1 christos and return the gp-relative address of the linkage table entry. */
3259 1.1 christos
3260 1.1 christos static bfd_vma
3261 1.1 christos set_got_entry (bfd *abfd, struct bfd_link_info *info,
3262 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i,
3263 1.1 christos long dynindx, bfd_vma addend, bfd_vma value,
3264 1.1 christos unsigned int dyn_r_type)
3265 1.1 christos {
3266 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3267 1.1 christos asection *got_sec;
3268 1.1 christos bfd_boolean done;
3269 1.1 christos bfd_vma got_offset;
3270 1.1 christos
3271 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3272 1.1 christos if (ia64_info == NULL)
3273 1.1 christos return 0;
3274 1.1 christos
3275 1.1 christos got_sec = ia64_info->root.sgot;
3276 1.1 christos
3277 1.1 christos switch (dyn_r_type)
3278 1.1 christos {
3279 1.1 christos case R_IA64_TPREL64LSB:
3280 1.1 christos done = dyn_i->tprel_done;
3281 1.1 christos dyn_i->tprel_done = TRUE;
3282 1.1 christos got_offset = dyn_i->tprel_offset;
3283 1.1 christos break;
3284 1.1 christos case R_IA64_DTPMOD64LSB:
3285 1.1 christos if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3286 1.1 christos {
3287 1.1 christos done = dyn_i->dtpmod_done;
3288 1.1 christos dyn_i->dtpmod_done = TRUE;
3289 1.1 christos }
3290 1.1 christos else
3291 1.1 christos {
3292 1.1 christos done = ia64_info->self_dtpmod_done;
3293 1.1 christos ia64_info->self_dtpmod_done = TRUE;
3294 1.1 christos dynindx = 0;
3295 1.1 christos }
3296 1.1 christos got_offset = dyn_i->dtpmod_offset;
3297 1.1 christos break;
3298 1.1 christos case R_IA64_DTPREL32LSB:
3299 1.1 christos case R_IA64_DTPREL64LSB:
3300 1.1 christos done = dyn_i->dtprel_done;
3301 1.1 christos dyn_i->dtprel_done = TRUE;
3302 1.1 christos got_offset = dyn_i->dtprel_offset;
3303 1.1 christos break;
3304 1.1 christos default:
3305 1.1 christos done = dyn_i->got_done;
3306 1.1 christos dyn_i->got_done = TRUE;
3307 1.1 christos got_offset = dyn_i->got_offset;
3308 1.1 christos break;
3309 1.1 christos }
3310 1.1 christos
3311 1.1 christos BFD_ASSERT ((got_offset & 7) == 0);
3312 1.1 christos
3313 1.1 christos if (! done)
3314 1.1 christos {
3315 1.1 christos /* Store the target address in the linkage table entry. */
3316 1.1 christos bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3317 1.1 christos
3318 1.1 christos /* Install a dynamic relocation if needed. */
3319 1.1 christos if (((info->shared
3320 1.1 christos && (!dyn_i->h
3321 1.1 christos || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3322 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak)
3323 1.1 christos && dyn_r_type != R_IA64_DTPREL32LSB
3324 1.1 christos && dyn_r_type != R_IA64_DTPREL64LSB)
3325 1.1 christos || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3326 1.1 christos || (dynindx != -1
3327 1.1 christos && (dyn_r_type == R_IA64_FPTR32LSB
3328 1.1 christos || dyn_r_type == R_IA64_FPTR64LSB)))
3329 1.1 christos && (!dyn_i->want_ltoff_fptr
3330 1.1 christos || !info->pie
3331 1.1 christos || !dyn_i->h
3332 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak))
3333 1.1 christos {
3334 1.1 christos if (dynindx == -1
3335 1.1 christos && dyn_r_type != R_IA64_TPREL64LSB
3336 1.1 christos && dyn_r_type != R_IA64_DTPMOD64LSB
3337 1.1 christos && dyn_r_type != R_IA64_DTPREL32LSB
3338 1.1 christos && dyn_r_type != R_IA64_DTPREL64LSB)
3339 1.1 christos {
3340 1.1 christos dyn_r_type = R_IA64_RELNNLSB;
3341 1.1 christos dynindx = 0;
3342 1.1 christos addend = value;
3343 1.1 christos }
3344 1.1 christos
3345 1.1 christos if (bfd_big_endian (abfd))
3346 1.1 christos {
3347 1.1 christos switch (dyn_r_type)
3348 1.1 christos {
3349 1.1 christos case R_IA64_REL32LSB:
3350 1.1 christos dyn_r_type = R_IA64_REL32MSB;
3351 1.1 christos break;
3352 1.1 christos case R_IA64_DIR32LSB:
3353 1.1 christos dyn_r_type = R_IA64_DIR32MSB;
3354 1.1 christos break;
3355 1.1 christos case R_IA64_FPTR32LSB:
3356 1.1 christos dyn_r_type = R_IA64_FPTR32MSB;
3357 1.1 christos break;
3358 1.1 christos case R_IA64_DTPREL32LSB:
3359 1.1 christos dyn_r_type = R_IA64_DTPREL32MSB;
3360 1.1 christos break;
3361 1.1 christos case R_IA64_REL64LSB:
3362 1.1 christos dyn_r_type = R_IA64_REL64MSB;
3363 1.1 christos break;
3364 1.1 christos case R_IA64_DIR64LSB:
3365 1.1 christos dyn_r_type = R_IA64_DIR64MSB;
3366 1.1 christos break;
3367 1.1 christos case R_IA64_FPTR64LSB:
3368 1.1 christos dyn_r_type = R_IA64_FPTR64MSB;
3369 1.1 christos break;
3370 1.1 christos case R_IA64_TPREL64LSB:
3371 1.1 christos dyn_r_type = R_IA64_TPREL64MSB;
3372 1.1 christos break;
3373 1.1 christos case R_IA64_DTPMOD64LSB:
3374 1.1 christos dyn_r_type = R_IA64_DTPMOD64MSB;
3375 1.1 christos break;
3376 1.1 christos case R_IA64_DTPREL64LSB:
3377 1.1 christos dyn_r_type = R_IA64_DTPREL64MSB;
3378 1.1 christos break;
3379 1.1 christos default:
3380 1.1 christos BFD_ASSERT (FALSE);
3381 1.1 christos break;
3382 1.1 christos }
3383 1.1 christos }
3384 1.1 christos
3385 1.1 christos elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3386 1.1 christos ia64_info->root.srelgot,
3387 1.1 christos got_offset, dyn_r_type,
3388 1.1 christos dynindx, addend);
3389 1.1 christos }
3390 1.1 christos }
3391 1.1 christos
3392 1.1 christos /* Return the address of the linkage table entry. */
3393 1.1 christos value = (got_sec->output_section->vma
3394 1.1 christos + got_sec->output_offset
3395 1.1 christos + got_offset);
3396 1.1 christos
3397 1.1 christos return value;
3398 1.1 christos }
3399 1.1 christos
3400 1.1 christos /* Fill in a function descriptor consisting of the function's code
3401 1.1 christos address and its global pointer. Return the descriptor's address. */
3402 1.1 christos
3403 1.1 christos static bfd_vma
3404 1.1 christos set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
3405 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i,
3406 1.1 christos bfd_vma value)
3407 1.1 christos {
3408 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3409 1.1 christos asection *fptr_sec;
3410 1.1 christos
3411 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3412 1.1 christos if (ia64_info == NULL)
3413 1.1 christos return 0;
3414 1.1 christos
3415 1.1 christos fptr_sec = ia64_info->fptr_sec;
3416 1.1 christos
3417 1.1 christos if (!dyn_i->fptr_done)
3418 1.1 christos {
3419 1.1 christos dyn_i->fptr_done = 1;
3420 1.1 christos
3421 1.1 christos /* Fill in the function descriptor. */
3422 1.1 christos bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3423 1.1 christos bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3424 1.1 christos fptr_sec->contents + dyn_i->fptr_offset + 8);
3425 1.1 christos if (ia64_info->rel_fptr_sec)
3426 1.1 christos {
3427 1.1 christos Elf_Internal_Rela outrel;
3428 1.1 christos bfd_byte *loc;
3429 1.1 christos
3430 1.1 christos if (bfd_little_endian (abfd))
3431 1.1 christos outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3432 1.1 christos else
3433 1.1 christos outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3434 1.1 christos outrel.r_addend = value;
3435 1.1 christos outrel.r_offset = (fptr_sec->output_section->vma
3436 1.1 christos + fptr_sec->output_offset
3437 1.1 christos + dyn_i->fptr_offset);
3438 1.1 christos loc = ia64_info->rel_fptr_sec->contents;
3439 1.1 christos loc += ia64_info->rel_fptr_sec->reloc_count++
3440 1.1 christos * sizeof (ElfNN_External_Rela);
3441 1.1 christos bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3442 1.1 christos }
3443 1.1 christos }
3444 1.1 christos
3445 1.1 christos /* Return the descriptor's address. */
3446 1.1 christos value = (fptr_sec->output_section->vma
3447 1.1 christos + fptr_sec->output_offset
3448 1.1 christos + dyn_i->fptr_offset);
3449 1.1 christos
3450 1.1 christos return value;
3451 1.1 christos }
3452 1.1 christos
3453 1.1 christos /* Fill in a PLTOFF entry consisting of the function's code address
3454 1.1 christos and its global pointer. Return the descriptor's address. */
3455 1.1 christos
3456 1.1 christos static bfd_vma
3457 1.1 christos set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
3458 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i,
3459 1.1 christos bfd_vma value, bfd_boolean is_plt)
3460 1.1 christos {
3461 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3462 1.1 christos asection *pltoff_sec;
3463 1.1 christos
3464 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3465 1.1 christos if (ia64_info == NULL)
3466 1.1 christos return 0;
3467 1.1 christos
3468 1.1 christos pltoff_sec = ia64_info->pltoff_sec;
3469 1.1 christos
3470 1.1 christos /* Don't do anything if this symbol uses a real PLT entry. In
3471 1.1 christos that case, we'll fill this in during finish_dynamic_symbol. */
3472 1.1 christos if ((! dyn_i->want_plt || is_plt)
3473 1.1 christos && !dyn_i->pltoff_done)
3474 1.1 christos {
3475 1.1 christos bfd_vma gp = _bfd_get_gp_value (abfd);
3476 1.1 christos
3477 1.1 christos /* Fill in the function descriptor. */
3478 1.1 christos bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3479 1.1 christos bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3480 1.1 christos
3481 1.1 christos /* Install dynamic relocations if needed. */
3482 1.1 christos if (!is_plt
3483 1.1 christos && info->shared
3484 1.1 christos && (!dyn_i->h
3485 1.1 christos || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3486 1.1 christos || dyn_i->h->root.type != bfd_link_hash_undefweak))
3487 1.1 christos {
3488 1.1 christos unsigned int dyn_r_type;
3489 1.1 christos
3490 1.1 christos if (bfd_big_endian (abfd))
3491 1.1 christos dyn_r_type = R_IA64_RELNNMSB;
3492 1.1 christos else
3493 1.1 christos dyn_r_type = R_IA64_RELNNLSB;
3494 1.1 christos
3495 1.1 christos elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3496 1.1 christos ia64_info->rel_pltoff_sec,
3497 1.1 christos dyn_i->pltoff_offset,
3498 1.1 christos dyn_r_type, 0, value);
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 + ARCH_SIZE / 8,
3502 1.1 christos dyn_r_type, 0, gp);
3503 1.1 christos }
3504 1.1 christos
3505 1.1 christos dyn_i->pltoff_done = 1;
3506 1.1 christos }
3507 1.1 christos
3508 1.1 christos /* Return the descriptor's address. */
3509 1.1 christos value = (pltoff_sec->output_section->vma
3510 1.1 christos + pltoff_sec->output_offset
3511 1.1 christos + dyn_i->pltoff_offset);
3512 1.1 christos
3513 1.1 christos return value;
3514 1.1 christos }
3515 1.1 christos
3516 1.1 christos /* Return the base VMA address which should be subtracted from real addresses
3517 1.1 christos when resolving @tprel() relocation.
3518 1.1 christos Main program TLS (whose template starts at PT_TLS p_vaddr)
3519 1.1 christos is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3520 1.1 christos
3521 1.1 christos static bfd_vma
3522 1.1 christos elfNN_ia64_tprel_base (struct bfd_link_info *info)
3523 1.1 christos {
3524 1.1 christos asection *tls_sec = elf_hash_table (info)->tls_sec;
3525 1.1 christos return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
3526 1.1 christos tls_sec->alignment_power);
3527 1.1 christos }
3528 1.1 christos
3529 1.1 christos /* Return the base VMA address which should be subtracted from real addresses
3530 1.1 christos when resolving @dtprel() relocation.
3531 1.1 christos This is PT_TLS segment p_vaddr. */
3532 1.1 christos
3533 1.1 christos static bfd_vma
3534 1.1 christos elfNN_ia64_dtprel_base (struct bfd_link_info *info)
3535 1.1 christos {
3536 1.1 christos return elf_hash_table (info)->tls_sec->vma;
3537 1.1 christos }
3538 1.1 christos
3539 1.1 christos /* Called through qsort to sort the .IA_64.unwind section during a
3540 1.1 christos non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3541 1.1 christos to the output bfd so we can do proper endianness frobbing. */
3542 1.1 christos
3543 1.1 christos static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3544 1.1 christos
3545 1.1 christos static int
3546 1.1 christos elfNN_ia64_unwind_entry_compare (const void * a, const void * b)
3547 1.1 christos {
3548 1.1 christos bfd_vma av, bv;
3549 1.1 christos
3550 1.1 christos av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3551 1.1 christos bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3552 1.1 christos
3553 1.1 christos return (av < bv ? -1 : av > bv ? 1 : 0);
3554 1.1 christos }
3555 1.1 christos
3556 1.1 christos /* Make sure we've got ourselves a nice fat __gp value. */
3557 1.1 christos static bfd_boolean
3558 1.1 christos elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final)
3559 1.1 christos {
3560 1.1 christos bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3561 1.1 christos bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3562 1.1 christos struct elf_link_hash_entry *gp;
3563 1.1 christos bfd_vma gp_val;
3564 1.1 christos asection *os;
3565 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3566 1.1 christos
3567 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3568 1.1 christos if (ia64_info == NULL)
3569 1.1 christos return FALSE;
3570 1.1 christos
3571 1.1 christos /* Find the min and max vma of all sections marked short. Also collect
3572 1.1 christos min and max vma of any type, for use in selecting a nice gp. */
3573 1.1 christos for (os = abfd->sections; os ; os = os->next)
3574 1.1 christos {
3575 1.1 christos bfd_vma lo, hi;
3576 1.1 christos
3577 1.1 christos if ((os->flags & SEC_ALLOC) == 0)
3578 1.1 christos continue;
3579 1.1 christos
3580 1.1 christos lo = os->vma;
3581 1.1 christos /* When this function is called from elfNN_ia64_final_link
3582 1.1 christos the correct value to use is os->size. When called from
3583 1.1 christos elfNN_ia64_relax_section we are in the middle of section
3584 1.1 christos sizing; some sections will already have os->size set, others
3585 1.1 christos will have os->size zero and os->rawsize the previous size. */
3586 1.1 christos hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
3587 1.1 christos if (hi < lo)
3588 1.1 christos hi = (bfd_vma) -1;
3589 1.1 christos
3590 1.1 christos if (min_vma > lo)
3591 1.1 christos min_vma = lo;
3592 1.1 christos if (max_vma < hi)
3593 1.1 christos max_vma = hi;
3594 1.1 christos if (os->flags & SEC_SMALL_DATA)
3595 1.1 christos {
3596 1.1 christos if (min_short_vma > lo)
3597 1.1 christos min_short_vma = lo;
3598 1.1 christos if (max_short_vma < hi)
3599 1.1 christos max_short_vma = hi;
3600 1.1 christos }
3601 1.1 christos }
3602 1.1 christos
3603 1.1 christos if (ia64_info->min_short_sec)
3604 1.1 christos {
3605 1.1 christos if (min_short_vma
3606 1.1 christos > (ia64_info->min_short_sec->vma
3607 1.1 christos + ia64_info->min_short_offset))
3608 1.1 christos min_short_vma = (ia64_info->min_short_sec->vma
3609 1.1 christos + ia64_info->min_short_offset);
3610 1.1 christos if (max_short_vma
3611 1.1 christos < (ia64_info->max_short_sec->vma
3612 1.1 christos + ia64_info->max_short_offset))
3613 1.1 christos max_short_vma = (ia64_info->max_short_sec->vma
3614 1.1 christos + ia64_info->max_short_offset);
3615 1.1 christos }
3616 1.1 christos
3617 1.1 christos /* See if the user wants to force a value. */
3618 1.1 christos gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3619 1.1 christos FALSE, FALSE);
3620 1.1 christos
3621 1.1 christos if (gp
3622 1.1 christos && (gp->root.type == bfd_link_hash_defined
3623 1.1 christos || gp->root.type == bfd_link_hash_defweak))
3624 1.1 christos {
3625 1.1 christos asection *gp_sec = gp->root.u.def.section;
3626 1.1 christos gp_val = (gp->root.u.def.value
3627 1.1 christos + gp_sec->output_section->vma
3628 1.1 christos + gp_sec->output_offset);
3629 1.1 christos }
3630 1.1 christos else
3631 1.1 christos {
3632 1.1 christos /* Pick a sensible value. */
3633 1.1 christos
3634 1.1 christos if (ia64_info->min_short_sec)
3635 1.1 christos {
3636 1.1 christos bfd_vma short_range = max_short_vma - min_short_vma;
3637 1.1 christos
3638 1.1 christos /* If min_short_sec is set, pick one in the middle bewteen
3639 1.1 christos min_short_vma and max_short_vma. */
3640 1.1 christos if (short_range >= 0x400000)
3641 1.1 christos goto overflow;
3642 1.1 christos gp_val = min_short_vma + short_range / 2;
3643 1.1 christos }
3644 1.1 christos else
3645 1.1 christos {
3646 1.1 christos asection *got_sec = ia64_info->root.sgot;
3647 1.1 christos
3648 1.1 christos /* Start with just the address of the .got. */
3649 1.1 christos if (got_sec)
3650 1.1 christos gp_val = got_sec->output_section->vma;
3651 1.1 christos else if (max_short_vma != 0)
3652 1.1 christos gp_val = min_short_vma;
3653 1.1 christos else if (max_vma - min_vma < 0x200000)
3654 1.1 christos gp_val = min_vma;
3655 1.1 christos else
3656 1.1 christos gp_val = max_vma - 0x200000 + 8;
3657 1.1 christos }
3658 1.1 christos
3659 1.1 christos /* If it is possible to address the entire image, but we
3660 1.1 christos don't with the choice above, adjust. */
3661 1.1 christos if (max_vma - min_vma < 0x400000
3662 1.1 christos && (max_vma - gp_val >= 0x200000
3663 1.1 christos || gp_val - min_vma > 0x200000))
3664 1.1 christos gp_val = min_vma + 0x200000;
3665 1.1 christos else if (max_short_vma != 0)
3666 1.1 christos {
3667 1.1 christos /* If we don't cover all the short data, adjust. */
3668 1.1 christos if (max_short_vma - gp_val >= 0x200000)
3669 1.1 christos gp_val = min_short_vma + 0x200000;
3670 1.1 christos
3671 1.1 christos /* If we're addressing stuff past the end, adjust back. */
3672 1.1 christos if (gp_val > max_vma)
3673 1.1 christos gp_val = max_vma - 0x200000 + 8;
3674 1.1 christos }
3675 1.1 christos }
3676 1.1 christos
3677 1.1 christos /* Validate whether all SHF_IA_64_SHORT sections are within
3678 1.1 christos range of the chosen GP. */
3679 1.1 christos
3680 1.1 christos if (max_short_vma != 0)
3681 1.1 christos {
3682 1.1 christos if (max_short_vma - min_short_vma >= 0x400000)
3683 1.1 christos {
3684 1.1 christos overflow:
3685 1.1 christos (*_bfd_error_handler)
3686 1.1 christos (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3687 1.1 christos bfd_get_filename (abfd),
3688 1.1 christos (unsigned long) (max_short_vma - min_short_vma));
3689 1.1 christos return FALSE;
3690 1.1 christos }
3691 1.1 christos else if ((gp_val > min_short_vma
3692 1.1 christos && gp_val - min_short_vma > 0x200000)
3693 1.1 christos || (gp_val < max_short_vma
3694 1.1 christos && max_short_vma - gp_val >= 0x200000))
3695 1.1 christos {
3696 1.1 christos (*_bfd_error_handler)
3697 1.1 christos (_("%s: __gp does not cover short data segment"),
3698 1.1 christos bfd_get_filename (abfd));
3699 1.1 christos return FALSE;
3700 1.1 christos }
3701 1.1 christos }
3702 1.1 christos
3703 1.1 christos _bfd_set_gp_value (abfd, gp_val);
3704 1.1 christos
3705 1.1 christos return TRUE;
3706 1.1 christos }
3707 1.1 christos
3708 1.1 christos static bfd_boolean
3709 1.1 christos elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
3710 1.1 christos {
3711 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3712 1.1 christos asection *unwind_output_sec;
3713 1.1 christos
3714 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3715 1.1 christos if (ia64_info == NULL)
3716 1.1 christos return FALSE;
3717 1.1 christos
3718 1.1 christos /* Make sure we've got ourselves a nice fat __gp value. */
3719 1.1 christos if (!info->relocatable)
3720 1.1 christos {
3721 1.1 christos bfd_vma gp_val;
3722 1.1 christos struct elf_link_hash_entry *gp;
3723 1.1 christos
3724 1.1 christos /* We assume after gp is set, section size will only decrease. We
3725 1.1 christos need to adjust gp for it. */
3726 1.1 christos _bfd_set_gp_value (abfd, 0);
3727 1.1 christos if (! elfNN_ia64_choose_gp (abfd, info, TRUE))
3728 1.1 christos return FALSE;
3729 1.1 christos gp_val = _bfd_get_gp_value (abfd);
3730 1.1 christos
3731 1.1 christos gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3732 1.1 christos FALSE, FALSE);
3733 1.1 christos if (gp)
3734 1.1 christos {
3735 1.1 christos gp->root.type = bfd_link_hash_defined;
3736 1.1 christos gp->root.u.def.value = gp_val;
3737 1.1 christos gp->root.u.def.section = bfd_abs_section_ptr;
3738 1.1 christos }
3739 1.1 christos }
3740 1.1 christos
3741 1.1 christos /* If we're producing a final executable, we need to sort the contents
3742 1.1 christos of the .IA_64.unwind section. Force this section to be relocated
3743 1.1 christos into memory rather than written immediately to the output file. */
3744 1.1 christos unwind_output_sec = NULL;
3745 1.1 christos if (!info->relocatable)
3746 1.1 christos {
3747 1.1 christos asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3748 1.1 christos if (s)
3749 1.1 christos {
3750 1.1 christos unwind_output_sec = s->output_section;
3751 1.1 christos unwind_output_sec->contents
3752 1.1 christos = bfd_malloc (unwind_output_sec->size);
3753 1.1 christos if (unwind_output_sec->contents == NULL)
3754 1.1 christos return FALSE;
3755 1.1 christos }
3756 1.1 christos }
3757 1.1 christos
3758 1.1 christos /* Invoke the regular ELF backend linker to do all the work. */
3759 1.1 christos if (!bfd_elf_final_link (abfd, info))
3760 1.1 christos return FALSE;
3761 1.1 christos
3762 1.1 christos if (unwind_output_sec)
3763 1.1 christos {
3764 1.1 christos elfNN_ia64_unwind_entry_compare_bfd = abfd;
3765 1.1 christos qsort (unwind_output_sec->contents,
3766 1.1 christos (size_t) (unwind_output_sec->size / 24),
3767 1.1 christos 24,
3768 1.1 christos elfNN_ia64_unwind_entry_compare);
3769 1.1 christos
3770 1.1 christos if (! bfd_set_section_contents (abfd, unwind_output_sec,
3771 1.1 christos unwind_output_sec->contents, (bfd_vma) 0,
3772 1.1 christos unwind_output_sec->size))
3773 1.1 christos return FALSE;
3774 1.1 christos }
3775 1.1 christos
3776 1.1 christos return TRUE;
3777 1.1 christos }
3778 1.1 christos
3779 1.1 christos static bfd_boolean
3780 1.1 christos elfNN_ia64_relocate_section (bfd *output_bfd,
3781 1.1 christos struct bfd_link_info *info,
3782 1.1 christos bfd *input_bfd,
3783 1.1 christos asection *input_section,
3784 1.1 christos bfd_byte *contents,
3785 1.1 christos Elf_Internal_Rela *relocs,
3786 1.1 christos Elf_Internal_Sym *local_syms,
3787 1.1 christos asection **local_sections)
3788 1.1 christos {
3789 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
3790 1.1 christos Elf_Internal_Shdr *symtab_hdr;
3791 1.1 christos Elf_Internal_Rela *rel;
3792 1.1 christos Elf_Internal_Rela *relend;
3793 1.1 christos asection *srel;
3794 1.1 christos bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3795 1.1 christos bfd_vma gp_val;
3796 1.1 christos
3797 1.1 christos symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3798 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
3799 1.1 christos if (ia64_info == NULL)
3800 1.1 christos return FALSE;
3801 1.1 christos
3802 1.1 christos /* Infect various flags from the input section to the output section. */
3803 1.1 christos if (info->relocatable)
3804 1.1 christos {
3805 1.1 christos bfd_vma flags;
3806 1.1 christos
3807 1.1 christos flags = elf_section_data(input_section)->this_hdr.sh_flags;
3808 1.1 christos flags &= SHF_IA_64_NORECOV;
3809 1.1 christos
3810 1.1 christos elf_section_data(input_section->output_section)
3811 1.1 christos ->this_hdr.sh_flags |= flags;
3812 1.1 christos }
3813 1.1 christos
3814 1.1 christos gp_val = _bfd_get_gp_value (output_bfd);
3815 1.1 christos srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3816 1.1 christos
3817 1.1 christos rel = relocs;
3818 1.1 christos relend = relocs + input_section->reloc_count;
3819 1.1 christos for (; rel < relend; ++rel)
3820 1.1 christos {
3821 1.1 christos struct elf_link_hash_entry *h;
3822 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
3823 1.1 christos bfd_reloc_status_type r;
3824 1.1 christos reloc_howto_type *howto;
3825 1.1 christos unsigned long r_symndx;
3826 1.1 christos Elf_Internal_Sym *sym;
3827 1.1 christos unsigned int r_type;
3828 1.1 christos bfd_vma value;
3829 1.1 christos asection *sym_sec;
3830 1.1 christos bfd_byte *hit_addr;
3831 1.1 christos bfd_boolean dynamic_symbol_p;
3832 1.1 christos bfd_boolean undef_weak_ref;
3833 1.1 christos
3834 1.1 christos r_type = ELFNN_R_TYPE (rel->r_info);
3835 1.1 christos if (r_type > R_IA64_MAX_RELOC_CODE)
3836 1.1 christos {
3837 1.1 christos (*_bfd_error_handler)
3838 1.1 christos (_("%B: unknown relocation type %d"),
3839 1.1 christos input_bfd, (int) r_type);
3840 1.1 christos bfd_set_error (bfd_error_bad_value);
3841 1.1 christos ret_val = FALSE;
3842 1.1 christos continue;
3843 1.1 christos }
3844 1.1 christos
3845 1.1 christos howto = ia64_elf_lookup_howto (r_type);
3846 1.1 christos r_symndx = ELFNN_R_SYM (rel->r_info);
3847 1.1 christos h = NULL;
3848 1.1 christos sym = NULL;
3849 1.1 christos sym_sec = NULL;
3850 1.1 christos undef_weak_ref = FALSE;
3851 1.1 christos
3852 1.1 christos if (r_symndx < symtab_hdr->sh_info)
3853 1.1 christos {
3854 1.1 christos /* Reloc against local symbol. */
3855 1.1 christos asection *msec;
3856 1.1 christos sym = local_syms + r_symndx;
3857 1.1 christos sym_sec = local_sections[r_symndx];
3858 1.1 christos msec = sym_sec;
3859 1.1 christos value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3860 1.1 christos if (!info->relocatable
3861 1.1 christos && (sym_sec->flags & SEC_MERGE) != 0
3862 1.1 christos && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3863 1.1 christos && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
3864 1.1 christos {
3865 1.1 christos struct elfNN_ia64_local_hash_entry *loc_h;
3866 1.1 christos
3867 1.1 christos loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3868 1.1 christos if (loc_h && ! loc_h->sec_merge_done)
3869 1.1 christos {
3870 1.1 christos struct elfNN_ia64_dyn_sym_info *dynent;
3871 1.1 christos unsigned int count;
3872 1.1 christos
3873 1.1 christos for (count = loc_h->count, dynent = loc_h->info;
3874 1.1 christos count != 0;
3875 1.1 christos count--, dynent++)
3876 1.1 christos {
3877 1.1 christos msec = sym_sec;
3878 1.1 christos dynent->addend =
3879 1.1 christos _bfd_merged_section_offset (output_bfd, &msec,
3880 1.1 christos elf_section_data (msec)->
3881 1.1 christos sec_info,
3882 1.1 christos sym->st_value
3883 1.1 christos + dynent->addend);
3884 1.1 christos dynent->addend -= sym->st_value;
3885 1.1 christos dynent->addend += msec->output_section->vma
3886 1.1 christos + msec->output_offset
3887 1.1 christos - sym_sec->output_section->vma
3888 1.1 christos - sym_sec->output_offset;
3889 1.1 christos }
3890 1.1 christos
3891 1.1 christos /* We may have introduced duplicated entries. We need
3892 1.1 christos to remove them properly. */
3893 1.1 christos count = sort_dyn_sym_info (loc_h->info, loc_h->count);
3894 1.1 christos if (count != loc_h->count)
3895 1.1 christos {
3896 1.1 christos loc_h->count = count;
3897 1.1 christos loc_h->sorted_count = count;
3898 1.1 christos }
3899 1.1 christos
3900 1.1 christos loc_h->sec_merge_done = 1;
3901 1.1 christos }
3902 1.1 christos }
3903 1.1 christos }
3904 1.1 christos else
3905 1.1 christos {
3906 1.1 christos bfd_boolean unresolved_reloc;
3907 1.1 christos bfd_boolean warned;
3908 1.1 christos struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3909 1.1 christos
3910 1.1 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3911 1.1 christos r_symndx, symtab_hdr, sym_hashes,
3912 1.1 christos h, sym_sec, value,
3913 1.1 christos unresolved_reloc, warned);
3914 1.1 christos
3915 1.1 christos if (h->root.type == bfd_link_hash_undefweak)
3916 1.1 christos undef_weak_ref = TRUE;
3917 1.1 christos else if (warned)
3918 1.1 christos continue;
3919 1.1 christos }
3920 1.1 christos
3921 1.1 christos if (sym_sec != NULL && discarded_section (sym_sec))
3922 1.1 christos RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3923 1.1 christos rel, 1, relend, howto, 0, contents);
3924 1.1 christos
3925 1.1 christos if (info->relocatable)
3926 1.1 christos continue;
3927 1.1 christos
3928 1.1 christos hit_addr = contents + rel->r_offset;
3929 1.1 christos value += rel->r_addend;
3930 1.1 christos dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3931 1.1 christos
3932 1.1 christos switch (r_type)
3933 1.1 christos {
3934 1.1 christos case R_IA64_NONE:
3935 1.1 christos case R_IA64_LDXMOV:
3936 1.1 christos continue;
3937 1.1 christos
3938 1.1 christos case R_IA64_IMM14:
3939 1.1 christos case R_IA64_IMM22:
3940 1.1 christos case R_IA64_IMM64:
3941 1.1 christos case R_IA64_DIR32MSB:
3942 1.1 christos case R_IA64_DIR32LSB:
3943 1.1 christos case R_IA64_DIR64MSB:
3944 1.1 christos case R_IA64_DIR64LSB:
3945 1.1 christos /* Install a dynamic relocation for this reloc. */
3946 1.1 christos if ((dynamic_symbol_p || info->shared)
3947 1.1 christos && r_symndx != STN_UNDEF
3948 1.1 christos && (input_section->flags & SEC_ALLOC) != 0)
3949 1.1 christos {
3950 1.1 christos unsigned int dyn_r_type;
3951 1.1 christos long dynindx;
3952 1.1 christos bfd_vma addend;
3953 1.1 christos
3954 1.1 christos BFD_ASSERT (srel != NULL);
3955 1.1 christos
3956 1.1 christos switch (r_type)
3957 1.1 christos {
3958 1.1 christos case R_IA64_IMM14:
3959 1.1 christos case R_IA64_IMM22:
3960 1.1 christos case R_IA64_IMM64:
3961 1.1 christos /* ??? People shouldn't be doing non-pic code in
3962 1.1 christos shared libraries nor dynamic executables. */
3963 1.1 christos (*_bfd_error_handler)
3964 1.1 christos (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
3965 1.1 christos input_bfd,
3966 1.1 christos h ? h->root.root.string
3967 1.1 christos : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3968 1.1 christos sym_sec));
3969 1.1 christos ret_val = FALSE;
3970 1.1 christos continue;
3971 1.1 christos
3972 1.1 christos default:
3973 1.1 christos break;
3974 1.1 christos }
3975 1.1 christos
3976 1.1 christos /* If we don't need dynamic symbol lookup, find a
3977 1.1 christos matching RELATIVE relocation. */
3978 1.1 christos dyn_r_type = r_type;
3979 1.1 christos if (dynamic_symbol_p)
3980 1.1 christos {
3981 1.1 christos dynindx = h->dynindx;
3982 1.1 christos addend = rel->r_addend;
3983 1.1 christos value = 0;
3984 1.1 christos }
3985 1.1 christos else
3986 1.1 christos {
3987 1.1 christos switch (r_type)
3988 1.1 christos {
3989 1.1 christos case R_IA64_DIR32MSB:
3990 1.1 christos dyn_r_type = R_IA64_REL32MSB;
3991 1.1 christos break;
3992 1.1 christos case R_IA64_DIR32LSB:
3993 1.1 christos dyn_r_type = R_IA64_REL32LSB;
3994 1.1 christos break;
3995 1.1 christos case R_IA64_DIR64MSB:
3996 1.1 christos dyn_r_type = R_IA64_REL64MSB;
3997 1.1 christos break;
3998 1.1 christos case R_IA64_DIR64LSB:
3999 1.1 christos dyn_r_type = R_IA64_REL64LSB;
4000 1.1 christos break;
4001 1.1 christos
4002 1.1 christos default:
4003 1.1 christos break;
4004 1.1 christos }
4005 1.1 christos dynindx = 0;
4006 1.1 christos addend = value;
4007 1.1 christos }
4008 1.1 christos
4009 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4010 1.1 christos srel, rel->r_offset, dyn_r_type,
4011 1.1 christos dynindx, addend);
4012 1.1 christos }
4013 1.1 christos /* Fall through. */
4014 1.1 christos
4015 1.1 christos case R_IA64_LTV32MSB:
4016 1.1 christos case R_IA64_LTV32LSB:
4017 1.1 christos case R_IA64_LTV64MSB:
4018 1.1 christos case R_IA64_LTV64LSB:
4019 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4020 1.1 christos break;
4021 1.1 christos
4022 1.1 christos case R_IA64_GPREL22:
4023 1.1 christos case R_IA64_GPREL64I:
4024 1.1 christos case R_IA64_GPREL32MSB:
4025 1.1 christos case R_IA64_GPREL32LSB:
4026 1.1 christos case R_IA64_GPREL64MSB:
4027 1.1 christos case R_IA64_GPREL64LSB:
4028 1.1 christos if (dynamic_symbol_p)
4029 1.1 christos {
4030 1.1 christos (*_bfd_error_handler)
4031 1.1 christos (_("%B: @gprel relocation against dynamic symbol %s"),
4032 1.1 christos input_bfd,
4033 1.1 christos h ? h->root.root.string
4034 1.1 christos : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4035 1.1 christos sym_sec));
4036 1.1 christos ret_val = FALSE;
4037 1.1 christos continue;
4038 1.1 christos }
4039 1.1 christos value -= gp_val;
4040 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4041 1.1 christos break;
4042 1.1 christos
4043 1.1 christos case R_IA64_LTOFF22:
4044 1.1 christos case R_IA64_LTOFF22X:
4045 1.1 christos case R_IA64_LTOFF64I:
4046 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4047 1.1 christos value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4048 1.1 christos rel->r_addend, value, R_IA64_DIRNNLSB);
4049 1.1 christos value -= gp_val;
4050 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4051 1.1 christos break;
4052 1.1 christos
4053 1.1 christos case R_IA64_PLTOFF22:
4054 1.1 christos case R_IA64_PLTOFF64I:
4055 1.1 christos case R_IA64_PLTOFF64MSB:
4056 1.1 christos case R_IA64_PLTOFF64LSB:
4057 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4058 1.1 christos value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4059 1.1 christos value -= gp_val;
4060 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4061 1.1 christos break;
4062 1.1 christos
4063 1.1 christos case R_IA64_FPTR64I:
4064 1.1 christos case R_IA64_FPTR32MSB:
4065 1.1 christos case R_IA64_FPTR32LSB:
4066 1.1 christos case R_IA64_FPTR64MSB:
4067 1.1 christos case R_IA64_FPTR64LSB:
4068 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4069 1.1 christos if (dyn_i->want_fptr)
4070 1.1 christos {
4071 1.1 christos if (!undef_weak_ref)
4072 1.1 christos value = set_fptr_entry (output_bfd, info, dyn_i, value);
4073 1.1 christos }
4074 1.1 christos if (!dyn_i->want_fptr || info->pie)
4075 1.1 christos {
4076 1.1 christos long dynindx;
4077 1.1 christos unsigned int dyn_r_type = r_type;
4078 1.1 christos bfd_vma addend = rel->r_addend;
4079 1.1 christos
4080 1.1 christos /* Otherwise, we expect the dynamic linker to create
4081 1.1 christos the entry. */
4082 1.1 christos
4083 1.1 christos if (dyn_i->want_fptr)
4084 1.1 christos {
4085 1.1 christos if (r_type == R_IA64_FPTR64I)
4086 1.1 christos {
4087 1.1 christos /* We can't represent this without a dynamic symbol.
4088 1.1 christos Adjust the relocation to be against an output
4089 1.1 christos section symbol, which are always present in the
4090 1.1 christos dynamic symbol table. */
4091 1.1 christos /* ??? People shouldn't be doing non-pic code in
4092 1.1 christos shared libraries. Hork. */
4093 1.1 christos (*_bfd_error_handler)
4094 1.1 christos (_("%B: linking non-pic code in a position independent executable"),
4095 1.1 christos input_bfd);
4096 1.1 christos ret_val = FALSE;
4097 1.1 christos continue;
4098 1.1 christos }
4099 1.1 christos dynindx = 0;
4100 1.1 christos addend = value;
4101 1.1 christos dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
4102 1.1 christos }
4103 1.1 christos else if (h)
4104 1.1 christos {
4105 1.1 christos if (h->dynindx != -1)
4106 1.1 christos dynindx = h->dynindx;
4107 1.1 christos else
4108 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4109 1.1 christos (info, h->root.u.def.section->owner,
4110 1.1 christos global_sym_index (h)));
4111 1.1 christos value = 0;
4112 1.1 christos }
4113 1.1 christos else
4114 1.1 christos {
4115 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4116 1.1 christos (info, input_bfd, (long) r_symndx));
4117 1.1 christos value = 0;
4118 1.1 christos }
4119 1.1 christos
4120 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4121 1.1 christos srel, rel->r_offset, dyn_r_type,
4122 1.1 christos dynindx, addend);
4123 1.1 christos }
4124 1.1 christos
4125 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4126 1.1 christos break;
4127 1.1 christos
4128 1.1 christos case R_IA64_LTOFF_FPTR22:
4129 1.1 christos case R_IA64_LTOFF_FPTR64I:
4130 1.1 christos case R_IA64_LTOFF_FPTR32MSB:
4131 1.1 christos case R_IA64_LTOFF_FPTR32LSB:
4132 1.1 christos case R_IA64_LTOFF_FPTR64MSB:
4133 1.1 christos case R_IA64_LTOFF_FPTR64LSB:
4134 1.1 christos {
4135 1.1 christos long dynindx;
4136 1.1 christos
4137 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4138 1.1 christos if (dyn_i->want_fptr)
4139 1.1 christos {
4140 1.1 christos BFD_ASSERT (h == NULL || h->dynindx == -1);
4141 1.1 christos if (!undef_weak_ref)
4142 1.1 christos value = set_fptr_entry (output_bfd, info, dyn_i, value);
4143 1.1 christos dynindx = -1;
4144 1.1 christos }
4145 1.1 christos else
4146 1.1 christos {
4147 1.1 christos /* Otherwise, we expect the dynamic linker to create
4148 1.1 christos the entry. */
4149 1.1 christos if (h)
4150 1.1 christos {
4151 1.1 christos if (h->dynindx != -1)
4152 1.1 christos dynindx = h->dynindx;
4153 1.1 christos else
4154 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4155 1.1 christos (info, h->root.u.def.section->owner,
4156 1.1 christos global_sym_index (h)));
4157 1.1 christos }
4158 1.1 christos else
4159 1.1 christos dynindx = (_bfd_elf_link_lookup_local_dynindx
4160 1.1 christos (info, input_bfd, (long) r_symndx));
4161 1.1 christos value = 0;
4162 1.1 christos }
4163 1.1 christos
4164 1.1 christos value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4165 1.1 christos rel->r_addend, value, R_IA64_FPTRNNLSB);
4166 1.1 christos value -= gp_val;
4167 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4168 1.1 christos }
4169 1.1 christos break;
4170 1.1 christos
4171 1.1 christos case R_IA64_PCREL32MSB:
4172 1.1 christos case R_IA64_PCREL32LSB:
4173 1.1 christos case R_IA64_PCREL64MSB:
4174 1.1 christos case R_IA64_PCREL64LSB:
4175 1.1 christos /* Install a dynamic relocation for this reloc. */
4176 1.1 christos if (dynamic_symbol_p && r_symndx != STN_UNDEF)
4177 1.1 christos {
4178 1.1 christos BFD_ASSERT (srel != NULL);
4179 1.1 christos
4180 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4181 1.1 christos srel, rel->r_offset, r_type,
4182 1.1 christos h->dynindx, rel->r_addend);
4183 1.1 christos }
4184 1.1 christos goto finish_pcrel;
4185 1.1 christos
4186 1.1 christos case R_IA64_PCREL21B:
4187 1.1 christos case R_IA64_PCREL60B:
4188 1.1 christos /* We should have created a PLT entry for any dynamic symbol. */
4189 1.1 christos dyn_i = NULL;
4190 1.1 christos if (h)
4191 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4192 1.1 christos
4193 1.1 christos if (dyn_i && dyn_i->want_plt2)
4194 1.1 christos {
4195 1.1 christos /* Should have caught this earlier. */
4196 1.1 christos BFD_ASSERT (rel->r_addend == 0);
4197 1.1 christos
4198 1.1 christos value = (ia64_info->root.splt->output_section->vma
4199 1.1 christos + ia64_info->root.splt->output_offset
4200 1.1 christos + dyn_i->plt2_offset);
4201 1.1 christos }
4202 1.1 christos else
4203 1.1 christos {
4204 1.1 christos /* Since there's no PLT entry, Validate that this is
4205 1.1 christos locally defined. */
4206 1.1 christos BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4207 1.1 christos
4208 1.1 christos /* If the symbol is undef_weak, we shouldn't be trying
4209 1.1 christos to call it. There's every chance that we'd wind up
4210 1.1 christos with an out-of-range fixup here. Don't bother setting
4211 1.1 christos any value at all. */
4212 1.1 christos if (undef_weak_ref)
4213 1.1 christos continue;
4214 1.1 christos }
4215 1.1 christos goto finish_pcrel;
4216 1.1 christos
4217 1.1 christos case R_IA64_PCREL21BI:
4218 1.1 christos case R_IA64_PCREL21F:
4219 1.1 christos case R_IA64_PCREL21M:
4220 1.1 christos case R_IA64_PCREL22:
4221 1.1 christos case R_IA64_PCREL64I:
4222 1.1 christos /* The PCREL21BI reloc is specifically not intended for use with
4223 1.1 christos dynamic relocs. PCREL21F and PCREL21M are used for speculation
4224 1.1 christos fixup code, and thus probably ought not be dynamic. The
4225 1.1 christos PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4226 1.1 christos if (dynamic_symbol_p)
4227 1.1 christos {
4228 1.1 christos const char *msg;
4229 1.1 christos
4230 1.1 christos if (r_type == R_IA64_PCREL21BI)
4231 1.1 christos msg = _("%B: @internal branch to dynamic symbol %s");
4232 1.1 christos else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4233 1.1 christos msg = _("%B: speculation fixup to dynamic symbol %s");
4234 1.1 christos else
4235 1.1 christos msg = _("%B: @pcrel relocation against dynamic symbol %s");
4236 1.1 christos (*_bfd_error_handler) (msg, input_bfd,
4237 1.1 christos h ? h->root.root.string
4238 1.1 christos : bfd_elf_sym_name (input_bfd,
4239 1.1 christos symtab_hdr,
4240 1.1 christos sym,
4241 1.1 christos sym_sec));
4242 1.1 christos ret_val = FALSE;
4243 1.1 christos continue;
4244 1.1 christos }
4245 1.1 christos goto finish_pcrel;
4246 1.1 christos
4247 1.1 christos finish_pcrel:
4248 1.1 christos /* Make pc-relative. */
4249 1.1 christos value -= (input_section->output_section->vma
4250 1.1 christos + input_section->output_offset
4251 1.1 christos + rel->r_offset) & ~ (bfd_vma) 0x3;
4252 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4253 1.1 christos break;
4254 1.1 christos
4255 1.1 christos case R_IA64_SEGREL32MSB:
4256 1.1 christos case R_IA64_SEGREL32LSB:
4257 1.1 christos case R_IA64_SEGREL64MSB:
4258 1.1 christos case R_IA64_SEGREL64LSB:
4259 1.1 christos {
4260 1.1 christos /* Find the segment that contains the output_section. */
4261 1.1 christos Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
4262 1.1 christos (output_bfd, input_section->output_section);
4263 1.1 christos
4264 1.1 christos if (p == NULL)
4265 1.1 christos {
4266 1.1 christos r = bfd_reloc_notsupported;
4267 1.1 christos }
4268 1.1 christos else
4269 1.1 christos {
4270 1.1 christos /* The VMA of the segment is the vaddr of the associated
4271 1.1 christos program header. */
4272 1.1 christos if (value > p->p_vaddr)
4273 1.1 christos value -= p->p_vaddr;
4274 1.1 christos else
4275 1.1 christos value = 0;
4276 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4277 1.1 christos }
4278 1.1 christos break;
4279 1.1 christos }
4280 1.1 christos
4281 1.1 christos case R_IA64_SECREL32MSB:
4282 1.1 christos case R_IA64_SECREL32LSB:
4283 1.1 christos case R_IA64_SECREL64MSB:
4284 1.1 christos case R_IA64_SECREL64LSB:
4285 1.1 christos /* Make output-section relative to section where the symbol
4286 1.1 christos is defined. PR 475 */
4287 1.1 christos if (sym_sec)
4288 1.1 christos value -= sym_sec->output_section->vma;
4289 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4290 1.1 christos break;
4291 1.1 christos
4292 1.1 christos case R_IA64_IPLTMSB:
4293 1.1 christos case R_IA64_IPLTLSB:
4294 1.1 christos /* Install a dynamic relocation for this reloc. */
4295 1.1 christos if ((dynamic_symbol_p || info->shared)
4296 1.1 christos && (input_section->flags & SEC_ALLOC) != 0)
4297 1.1 christos {
4298 1.1 christos BFD_ASSERT (srel != NULL);
4299 1.1 christos
4300 1.1 christos /* If we don't need dynamic symbol lookup, install two
4301 1.1 christos RELATIVE relocations. */
4302 1.1 christos if (!dynamic_symbol_p)
4303 1.1 christos {
4304 1.1 christos unsigned int dyn_r_type;
4305 1.1 christos
4306 1.1 christos if (r_type == R_IA64_IPLTMSB)
4307 1.1 christos dyn_r_type = R_IA64_REL64MSB;
4308 1.1 christos else
4309 1.1 christos dyn_r_type = R_IA64_REL64LSB;
4310 1.1 christos
4311 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info,
4312 1.1 christos input_section,
4313 1.1 christos srel, rel->r_offset,
4314 1.1 christos dyn_r_type, 0, value);
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 + 8,
4318 1.1 christos dyn_r_type, 0, gp_val);
4319 1.1 christos }
4320 1.1 christos else
4321 1.1 christos elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4322 1.1 christos srel, rel->r_offset, r_type,
4323 1.1 christos h->dynindx, rel->r_addend);
4324 1.1 christos }
4325 1.1 christos
4326 1.1 christos if (r_type == R_IA64_IPLTMSB)
4327 1.1 christos r_type = R_IA64_DIR64MSB;
4328 1.1 christos else
4329 1.1 christos r_type = R_IA64_DIR64LSB;
4330 1.1 christos ia64_elf_install_value (hit_addr, value, r_type);
4331 1.1 christos r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
4332 1.1 christos break;
4333 1.1 christos
4334 1.1 christos case R_IA64_TPREL14:
4335 1.1 christos case R_IA64_TPREL22:
4336 1.1 christos case R_IA64_TPREL64I:
4337 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4338 1.1 christos goto missing_tls_sec;
4339 1.1 christos value -= elfNN_ia64_tprel_base (info);
4340 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4341 1.1 christos break;
4342 1.1 christos
4343 1.1 christos case R_IA64_DTPREL14:
4344 1.1 christos case R_IA64_DTPREL22:
4345 1.1 christos case R_IA64_DTPREL64I:
4346 1.1 christos case R_IA64_DTPREL32LSB:
4347 1.1 christos case R_IA64_DTPREL32MSB:
4348 1.1 christos case R_IA64_DTPREL64LSB:
4349 1.1 christos case R_IA64_DTPREL64MSB:
4350 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4351 1.1 christos goto missing_tls_sec;
4352 1.1 christos value -= elfNN_ia64_dtprel_base (info);
4353 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4354 1.1 christos break;
4355 1.1 christos
4356 1.1 christos case R_IA64_LTOFF_TPREL22:
4357 1.1 christos case R_IA64_LTOFF_DTPMOD22:
4358 1.1 christos case R_IA64_LTOFF_DTPREL22:
4359 1.1 christos {
4360 1.1 christos int got_r_type;
4361 1.1 christos long dynindx = h ? h->dynindx : -1;
4362 1.1 christos bfd_vma r_addend = rel->r_addend;
4363 1.1 christos
4364 1.1 christos switch (r_type)
4365 1.1 christos {
4366 1.1 christos default:
4367 1.1 christos case R_IA64_LTOFF_TPREL22:
4368 1.1 christos if (!dynamic_symbol_p)
4369 1.1 christos {
4370 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4371 1.1 christos goto missing_tls_sec;
4372 1.1 christos if (!info->shared)
4373 1.1 christos value -= elfNN_ia64_tprel_base (info);
4374 1.1 christos else
4375 1.1 christos {
4376 1.1 christos r_addend += value - elfNN_ia64_dtprel_base (info);
4377 1.1 christos dynindx = 0;
4378 1.1 christos }
4379 1.1 christos }
4380 1.1 christos got_r_type = R_IA64_TPREL64LSB;
4381 1.1 christos break;
4382 1.1 christos case R_IA64_LTOFF_DTPMOD22:
4383 1.1 christos if (!dynamic_symbol_p && !info->shared)
4384 1.1 christos value = 1;
4385 1.1 christos got_r_type = R_IA64_DTPMOD64LSB;
4386 1.1 christos break;
4387 1.1 christos case R_IA64_LTOFF_DTPREL22:
4388 1.1 christos if (!dynamic_symbol_p)
4389 1.1 christos {
4390 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
4391 1.1 christos goto missing_tls_sec;
4392 1.1 christos value -= elfNN_ia64_dtprel_base (info);
4393 1.1 christos }
4394 1.1 christos got_r_type = R_IA64_DTPRELNNLSB;
4395 1.1 christos break;
4396 1.1 christos }
4397 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4398 1.1 christos value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4399 1.1 christos value, got_r_type);
4400 1.1 christos value -= gp_val;
4401 1.1 christos r = ia64_elf_install_value (hit_addr, value, r_type);
4402 1.1 christos }
4403 1.1 christos break;
4404 1.1 christos
4405 1.1 christos default:
4406 1.1 christos r = bfd_reloc_notsupported;
4407 1.1 christos break;
4408 1.1 christos }
4409 1.1 christos
4410 1.1 christos switch (r)
4411 1.1 christos {
4412 1.1 christos case bfd_reloc_ok:
4413 1.1 christos break;
4414 1.1 christos
4415 1.1 christos case bfd_reloc_undefined:
4416 1.1 christos /* This can happen for global table relative relocs if
4417 1.1 christos __gp is undefined. This is a panic situation so we
4418 1.1 christos don't try to continue. */
4419 1.1 christos (*info->callbacks->undefined_symbol)
4420 1.1 christos (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4421 1.1 christos return FALSE;
4422 1.1 christos
4423 1.1 christos case bfd_reloc_notsupported:
4424 1.1 christos {
4425 1.1 christos const char *name;
4426 1.1 christos
4427 1.1 christos if (h)
4428 1.1 christos name = h->root.root.string;
4429 1.1 christos else
4430 1.1 christos name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4431 1.1 christos sym_sec);
4432 1.1 christos if (!(*info->callbacks->warning) (info, _("unsupported reloc"),
4433 1.1 christos name, input_bfd,
4434 1.1 christos input_section, rel->r_offset))
4435 1.1 christos return FALSE;
4436 1.1 christos ret_val = FALSE;
4437 1.1 christos }
4438 1.1 christos break;
4439 1.1 christos
4440 1.1 christos case bfd_reloc_dangerous:
4441 1.1 christos case bfd_reloc_outofrange:
4442 1.1 christos case bfd_reloc_overflow:
4443 1.1 christos default:
4444 1.1 christos missing_tls_sec:
4445 1.1 christos {
4446 1.1 christos const char *name;
4447 1.1 christos
4448 1.1 christos if (h)
4449 1.1 christos name = h->root.root.string;
4450 1.1 christos else
4451 1.1 christos name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4452 1.1 christos sym_sec);
4453 1.1 christos
4454 1.1 christos switch (r_type)
4455 1.1 christos {
4456 1.1 christos case R_IA64_TPREL14:
4457 1.1 christos case R_IA64_TPREL22:
4458 1.1 christos case R_IA64_TPREL64I:
4459 1.1 christos case R_IA64_DTPREL14:
4460 1.1 christos case R_IA64_DTPREL22:
4461 1.1 christos case R_IA64_DTPREL64I:
4462 1.1 christos case R_IA64_DTPREL32LSB:
4463 1.1 christos case R_IA64_DTPREL32MSB:
4464 1.1 christos case R_IA64_DTPREL64LSB:
4465 1.1 christos case R_IA64_DTPREL64MSB:
4466 1.1 christos case R_IA64_LTOFF_TPREL22:
4467 1.1 christos case R_IA64_LTOFF_DTPMOD22:
4468 1.1 christos case R_IA64_LTOFF_DTPREL22:
4469 1.1 christos (*_bfd_error_handler)
4470 1.1 christos (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."),
4471 1.1 christos input_bfd, input_section, howto->name, name,
4472 1.1 christos rel->r_offset);
4473 1.1 christos break;
4474 1.1 christos
4475 1.1 christos case R_IA64_PCREL21B:
4476 1.1 christos case R_IA64_PCREL21BI:
4477 1.1 christos case R_IA64_PCREL21M:
4478 1.1 christos case R_IA64_PCREL21F:
4479 1.1 christos if (is_elf_hash_table (info->hash))
4480 1.1 christos {
4481 1.1 christos /* Relaxtion is always performed for ELF output.
4482 1.1 christos Overflow failures for those relocations mean
4483 1.1 christos that the section is too big to relax. */
4484 1.1 christos (*_bfd_error_handler)
4485 1.1 christos (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."),
4486 1.1 christos input_bfd, input_section, howto->name, name,
4487 1.1 christos rel->r_offset, input_section->size);
4488 1.1 christos break;
4489 1.1 christos }
4490 1.1 christos default:
4491 1.1 christos if (!(*info->callbacks->reloc_overflow) (info,
4492 1.1 christos &h->root,
4493 1.1 christos name,
4494 1.1 christos howto->name,
4495 1.1 christos (bfd_vma) 0,
4496 1.1 christos input_bfd,
4497 1.1 christos input_section,
4498 1.1 christos rel->r_offset))
4499 1.1 christos return FALSE;
4500 1.1 christos break;
4501 1.1 christos }
4502 1.1 christos
4503 1.1 christos ret_val = FALSE;
4504 1.1 christos }
4505 1.1 christos break;
4506 1.1 christos }
4507 1.1 christos }
4508 1.1 christos
4509 1.1 christos return ret_val;
4510 1.1 christos }
4511 1.1 christos
4512 1.1 christos static bfd_boolean
4513 1.1 christos elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd,
4514 1.1 christos struct bfd_link_info *info,
4515 1.1 christos struct elf_link_hash_entry *h,
4516 1.1 christos Elf_Internal_Sym *sym)
4517 1.1 christos {
4518 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
4519 1.1 christos struct elfNN_ia64_dyn_sym_info *dyn_i;
4520 1.1 christos
4521 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
4522 1.1 christos if (ia64_info == NULL)
4523 1.1 christos return FALSE;
4524 1.1 christos
4525 1.1 christos dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4526 1.1 christos
4527 1.1 christos /* Fill in the PLT data, if required. */
4528 1.1 christos if (dyn_i && dyn_i->want_plt)
4529 1.1 christos {
4530 1.1 christos Elf_Internal_Rela outrel;
4531 1.1 christos bfd_byte *loc;
4532 1.1 christos asection *plt_sec;
4533 1.1 christos bfd_vma plt_addr, pltoff_addr, gp_val, plt_index;
4534 1.1 christos
4535 1.1 christos gp_val = _bfd_get_gp_value (output_bfd);
4536 1.1 christos
4537 1.1 christos /* Initialize the minimal PLT entry. */
4538 1.1 christos
4539 1.1 christos plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4540 1.1 christos plt_sec = ia64_info->root.splt;
4541 1.1 christos loc = plt_sec->contents + dyn_i->plt_offset;
4542 1.1 christos
4543 1.1 christos memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4544 1.1 christos ia64_elf_install_value (loc, plt_index, R_IA64_IMM22);
4545 1.1 christos ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4546 1.1 christos
4547 1.1 christos plt_addr = (plt_sec->output_section->vma
4548 1.1 christos + plt_sec->output_offset
4549 1.1 christos + dyn_i->plt_offset);
4550 1.1 christos pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4551 1.1 christos
4552 1.1 christos /* Initialize the FULL PLT entry, if needed. */
4553 1.1 christos if (dyn_i->want_plt2)
4554 1.1 christos {
4555 1.1 christos loc = plt_sec->contents + dyn_i->plt2_offset;
4556 1.1 christos
4557 1.1 christos memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4558 1.1 christos ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4559 1.1 christos
4560 1.1 christos /* Mark the symbol as undefined, rather than as defined in the
4561 1.1 christos plt section. Leave the value alone. */
4562 1.1 christos /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4563 1.1 christos first place. But perhaps elflink.c did some for us. */
4564 1.1 christos if (!h->def_regular)
4565 1.1 christos sym->st_shndx = SHN_UNDEF;
4566 1.1 christos }
4567 1.1 christos
4568 1.1 christos /* Create the dynamic relocation. */
4569 1.1 christos outrel.r_offset = pltoff_addr;
4570 1.1 christos if (bfd_little_endian (output_bfd))
4571 1.1 christos outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4572 1.1 christos else
4573 1.1 christos outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4574 1.1 christos outrel.r_addend = 0;
4575 1.1 christos
4576 1.1 christos /* This is fun. In the .IA_64.pltoff section, we've got entries
4577 1.1 christos that correspond both to real PLT entries, and those that
4578 1.1 christos happened to resolve to local symbols but need to be created
4579 1.1 christos to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4580 1.1 christos relocations for the real PLT should come at the end of the
4581 1.1 christos section, so that they can be indexed by plt entry at runtime.
4582 1.1 christos
4583 1.1 christos We emitted all of the relocations for the non-PLT @pltoff
4584 1.1 christos entries during relocate_section. So we can consider the
4585 1.1 christos existing sec->reloc_count to be the base of the array of
4586 1.1 christos PLT relocations. */
4587 1.1 christos
4588 1.1 christos loc = ia64_info->rel_pltoff_sec->contents;
4589 1.1 christos loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index)
4590 1.1 christos * sizeof (ElfNN_External_Rela));
4591 1.1 christos bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4592 1.1 christos }
4593 1.1 christos
4594 1.1 christos /* Mark some specially defined symbols as absolute. */
4595 1.1 christos if (h == ia64_info->root.hdynamic
4596 1.1 christos || h == ia64_info->root.hgot
4597 1.1 christos || h == ia64_info->root.hplt)
4598 1.1 christos sym->st_shndx = SHN_ABS;
4599 1.1 christos
4600 1.1 christos return TRUE;
4601 1.1 christos }
4602 1.1 christos
4603 1.1 christos static bfd_boolean
4604 1.1 christos elfNN_ia64_finish_dynamic_sections (bfd *abfd,
4605 1.1 christos struct bfd_link_info *info)
4606 1.1 christos {
4607 1.1 christos struct elfNN_ia64_link_hash_table *ia64_info;
4608 1.1 christos bfd *dynobj;
4609 1.1 christos
4610 1.1 christos ia64_info = elfNN_ia64_hash_table (info);
4611 1.1 christos if (ia64_info == NULL)
4612 1.1 christos return FALSE;
4613 1.1 christos
4614 1.1 christos dynobj = ia64_info->root.dynobj;
4615 1.1 christos
4616 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
4617 1.1 christos {
4618 1.1 christos ElfNN_External_Dyn *dyncon, *dynconend;
4619 1.1 christos asection *sdyn, *sgotplt;
4620 1.1 christos bfd_vma gp_val;
4621 1.1 christos
4622 1.1 christos sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4623 1.1 christos sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
4624 1.1 christos BFD_ASSERT (sdyn != NULL);
4625 1.1 christos dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4626 1.1 christos dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4627 1.1 christos
4628 1.1 christos gp_val = _bfd_get_gp_value (abfd);
4629 1.1 christos
4630 1.1 christos for (; dyncon < dynconend; dyncon++)
4631 1.1 christos {
4632 1.1 christos Elf_Internal_Dyn dyn;
4633 1.1 christos
4634 1.1 christos bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4635 1.1 christos
4636 1.1 christos switch (dyn.d_tag)
4637 1.1 christos {
4638 1.1 christos case DT_PLTGOT:
4639 1.1 christos dyn.d_un.d_ptr = gp_val;
4640 1.1 christos break;
4641 1.1 christos
4642 1.1 christos case DT_PLTRELSZ:
4643 1.1 christos dyn.d_un.d_val = (ia64_info->minplt_entries
4644 1.1 christos * sizeof (ElfNN_External_Rela));
4645 1.1 christos break;
4646 1.1 christos
4647 1.1 christos case DT_JMPREL:
4648 1.1 christos /* See the comment above in finish_dynamic_symbol. */
4649 1.1 christos dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4650 1.1 christos + ia64_info->rel_pltoff_sec->output_offset
4651 1.1 christos + (ia64_info->rel_pltoff_sec->reloc_count
4652 1.1 christos * sizeof (ElfNN_External_Rela)));
4653 1.1 christos break;
4654 1.1 christos
4655 1.1 christos case DT_IA_64_PLT_RESERVE:
4656 1.1 christos dyn.d_un.d_ptr = (sgotplt->output_section->vma
4657 1.1 christos + sgotplt->output_offset);
4658 1.1 christos break;
4659 1.1 christos
4660 1.1 christos case DT_RELASZ:
4661 1.1 christos /* Do not have RELASZ include JMPREL. This makes things
4662 1.1 christos easier on ld.so. This is not what the rest of BFD set up. */
4663 1.1 christos dyn.d_un.d_val -= (ia64_info->minplt_entries
4664 1.1 christos * sizeof (ElfNN_External_Rela));
4665 1.1 christos break;
4666 1.1 christos }
4667 1.1 christos
4668 1.1 christos bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4669 1.1 christos }
4670 1.1 christos
4671 1.1 christos /* Initialize the PLT0 entry. */
4672 1.1 christos if (ia64_info->root.splt)
4673 1.1 christos {
4674 1.1 christos bfd_byte *loc = ia64_info->root.splt->contents;
4675 1.1 christos bfd_vma pltres;
4676 1.1 christos
4677 1.1 christos memcpy (loc, plt_header, PLT_HEADER_SIZE);
4678 1.1 christos
4679 1.1 christos pltres = (sgotplt->output_section->vma
4680 1.1 christos + sgotplt->output_offset
4681 1.1 christos - gp_val);
4682 1.1 christos
4683 1.1 christos ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22);
4684 1.1 christos }
4685 1.1 christos }
4686 1.1 christos
4687 1.1 christos return TRUE;
4688 1.1 christos }
4689 1.1 christos
4690 1.1 christos /* ELF file flag handling: */
4692 1.1 christos
4693 1.1 christos /* Function to keep IA-64 specific file flags. */
4694 1.1 christos static bfd_boolean
4695 1.1 christos elfNN_ia64_set_private_flags (bfd *abfd, flagword flags)
4696 1.1 christos {
4697 1.1 christos BFD_ASSERT (!elf_flags_init (abfd)
4698 1.1 christos || elf_elfheader (abfd)->e_flags == flags);
4699 1.1 christos
4700 1.1 christos elf_elfheader (abfd)->e_flags = flags;
4701 1.1 christos elf_flags_init (abfd) = TRUE;
4702 1.1 christos return TRUE;
4703 1.1 christos }
4704 1.1 christos
4705 1.1 christos /* Merge backend specific data from an object file to the output
4706 1.1 christos object file when linking. */
4707 1.1 christos static bfd_boolean
4708 1.1 christos elfNN_ia64_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4709 1.1 christos {
4710 1.1 christos flagword out_flags;
4711 1.1 christos flagword in_flags;
4712 1.1 christos bfd_boolean ok = TRUE;
4713 1.1 christos
4714 1.1 christos /* Don't even pretend to support mixed-format linking. */
4715 1.1 christos if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4716 1.1 christos || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4717 1.1 christos return FALSE;
4718 1.1 christos
4719 1.1 christos in_flags = elf_elfheader (ibfd)->e_flags;
4720 1.1 christos out_flags = elf_elfheader (obfd)->e_flags;
4721 1.1 christos
4722 1.1 christos if (! elf_flags_init (obfd))
4723 1.1 christos {
4724 1.1 christos elf_flags_init (obfd) = TRUE;
4725 1.1 christos elf_elfheader (obfd)->e_flags = in_flags;
4726 1.1 christos
4727 1.1 christos if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4728 1.1 christos && bfd_get_arch_info (obfd)->the_default)
4729 1.1 christos {
4730 1.1 christos return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4731 1.1 christos bfd_get_mach (ibfd));
4732 1.1 christos }
4733 1.1 christos
4734 1.1 christos return TRUE;
4735 1.1 christos }
4736 1.1 christos
4737 1.1 christos /* Check flag compatibility. */
4738 1.1 christos if (in_flags == out_flags)
4739 1.1 christos return TRUE;
4740 1.1 christos
4741 1.1 christos /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4742 1.1 christos if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4743 1.1 christos elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4744 1.1 christos
4745 1.1 christos if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4746 1.1 christos {
4747 1.1 christos (*_bfd_error_handler)
4748 1.1 christos (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4749 1.1 christos ibfd);
4750 1.1 christos
4751 1.1 christos bfd_set_error (bfd_error_bad_value);
4752 1.1 christos ok = FALSE;
4753 1.1 christos }
4754 1.1 christos if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4755 1.1 christos {
4756 1.1 christos (*_bfd_error_handler)
4757 1.1 christos (_("%B: linking big-endian files with little-endian files"),
4758 1.1 christos ibfd);
4759 1.1 christos
4760 1.1 christos bfd_set_error (bfd_error_bad_value);
4761 1.1 christos ok = FALSE;
4762 1.1 christos }
4763 1.1 christos if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4764 1.1 christos {
4765 1.1 christos (*_bfd_error_handler)
4766 1.1 christos (_("%B: linking 64-bit files with 32-bit files"),
4767 1.1 christos ibfd);
4768 1.1 christos
4769 1.1 christos bfd_set_error (bfd_error_bad_value);
4770 1.1 christos ok = FALSE;
4771 1.1 christos }
4772 1.1 christos if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4773 1.1 christos {
4774 1.1 christos (*_bfd_error_handler)
4775 1.1 christos (_("%B: linking constant-gp files with non-constant-gp files"),
4776 1.1 christos ibfd);
4777 1.1 christos
4778 1.1 christos bfd_set_error (bfd_error_bad_value);
4779 1.1 christos ok = FALSE;
4780 1.1 christos }
4781 1.1 christos if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4782 1.1 christos != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4783 1.1 christos {
4784 1.1 christos (*_bfd_error_handler)
4785 1.1 christos (_("%B: linking auto-pic files with non-auto-pic files"),
4786 1.1 christos ibfd);
4787 1.1 christos
4788 1.1 christos bfd_set_error (bfd_error_bad_value);
4789 1.1 christos ok = FALSE;
4790 1.1 christos }
4791 1.1 christos
4792 1.1 christos return ok;
4793 1.1 christos }
4794 1.1 christos
4795 1.1 christos static bfd_boolean
4796 1.1 christos elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr)
4797 1.1 christos {
4798 1.1 christos FILE *file = (FILE *) ptr;
4799 1.1 christos flagword flags = elf_elfheader (abfd)->e_flags;
4800 1.1 christos
4801 1.1 christos BFD_ASSERT (abfd != NULL && ptr != NULL);
4802 1.1 christos
4803 1.1 christos fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4804 1.1 christos (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4805 1.1 christos (flags & EF_IA_64_EXT) ? "EXT, " : "",
4806 1.1 christos (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4807 1.1 christos (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4808 1.1 christos (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4809 1.1 christos (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4810 1.1 christos (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4811 1.1 christos (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4812 1.1 christos
4813 1.1 christos _bfd_elf_print_private_bfd_data (abfd, ptr);
4814 1.1 christos return TRUE;
4815 1.1 christos }
4816 1.1 christos
4817 1.1 christos static enum elf_reloc_type_class
4818 1.1 christos elfNN_ia64_reloc_type_class (const Elf_Internal_Rela *rela)
4819 1.1 christos {
4820 1.1 christos switch ((int) ELFNN_R_TYPE (rela->r_info))
4821 1.1 christos {
4822 1.1 christos case R_IA64_REL32MSB:
4823 1.1 christos case R_IA64_REL32LSB:
4824 1.1 christos case R_IA64_REL64MSB:
4825 1.1 christos case R_IA64_REL64LSB:
4826 1.1 christos return reloc_class_relative;
4827 1.1 christos case R_IA64_IPLTMSB:
4828 1.1 christos case R_IA64_IPLTLSB:
4829 1.1 christos return reloc_class_plt;
4830 1.1 christos case R_IA64_COPY:
4831 1.1 christos return reloc_class_copy;
4832 1.1 christos default:
4833 1.1 christos return reloc_class_normal;
4834 1.1 christos }
4835 1.1 christos }
4836 1.1 christos
4837 1.1 christos static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
4838 1.1 christos {
4839 1.1 christos { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4840 1.1 christos { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4841 1.1 christos { NULL, 0, 0, 0, 0 }
4842 1.1 christos };
4843 1.1 christos
4844 1.1 christos static bfd_boolean
4845 1.1 christos elfNN_ia64_object_p (bfd *abfd)
4846 1.1 christos {
4847 1.1 christos asection *sec;
4848 1.1 christos asection *group, *unwi, *unw;
4849 1.1 christos flagword flags;
4850 1.1 christos const char *name;
4851 1.1 christos char *unwi_name, *unw_name;
4852 1.1 christos bfd_size_type amt;
4853 1.1 christos
4854 1.1 christos if (abfd->flags & DYNAMIC)
4855 1.1 christos return TRUE;
4856 1.1 christos
4857 1.1 christos /* Flags for fake group section. */
4858 1.1 christos flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
4859 1.1 christos | SEC_EXCLUDE);
4860 1.1 christos
4861 1.1 christos /* We add a fake section group for each .gnu.linkonce.t.* section,
4862 1.1 christos which isn't in a section group, and its unwind sections. */
4863 1.1 christos for (sec = abfd->sections; sec != NULL; sec = sec->next)
4864 1.1 christos {
4865 1.1 christos if (elf_sec_group (sec) == NULL
4866 1.1 christos && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
4867 1.1 christos == (SEC_LINK_ONCE | SEC_CODE))
4868 1.1 christos && CONST_STRNEQ (sec->name, ".gnu.linkonce.t."))
4869 1.1 christos {
4870 1.1 christos name = sec->name + 16;
4871 1.1 christos
4872 1.1 christos amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
4873 1.1 christos unwi_name = bfd_alloc (abfd, amt);
4874 1.1 christos if (!unwi_name)
4875 1.1 christos return FALSE;
4876 1.1 christos
4877 1.1 christos strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
4878 1.1 christos unwi = bfd_get_section_by_name (abfd, unwi_name);
4879 1.1 christos
4880 1.1 christos amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
4881 1.1 christos unw_name = bfd_alloc (abfd, amt);
4882 1.1 christos if (!unw_name)
4883 1.1 christos return FALSE;
4884 1.1 christos
4885 1.1 christos strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
4886 1.1 christos unw = bfd_get_section_by_name (abfd, unw_name);
4887 1.1 christos
4888 1.1 christos /* We need to create a fake group section for it and its
4889 1.1 christos unwind sections. */
4890 1.1 christos group = bfd_make_section_anyway_with_flags (abfd, name,
4891 1.1 christos flags);
4892 1.1 christos if (group == NULL)
4893 1.1 christos return FALSE;
4894 1.1 christos
4895 1.1 christos /* Move the fake group section to the beginning. */
4896 1.1 christos bfd_section_list_remove (abfd, group);
4897 1.1 christos bfd_section_list_prepend (abfd, group);
4898 1.1 christos
4899 1.1 christos elf_next_in_group (group) = sec;
4900 1.1 christos
4901 1.1 christos elf_group_name (sec) = name;
4902 1.1 christos elf_next_in_group (sec) = sec;
4903 1.1 christos elf_sec_group (sec) = group;
4904 1.1 christos
4905 1.1 christos if (unwi)
4906 1.1 christos {
4907 1.1 christos elf_group_name (unwi) = name;
4908 1.1 christos elf_next_in_group (unwi) = sec;
4909 1.1 christos elf_next_in_group (sec) = unwi;
4910 1.1 christos elf_sec_group (unwi) = group;
4911 1.1 christos }
4912 1.1 christos
4913 1.1 christos if (unw)
4914 1.1 christos {
4915 1.1 christos elf_group_name (unw) = name;
4916 1.1 christos if (unwi)
4917 1.1 christos {
4918 1.1 christos elf_next_in_group (unw) = elf_next_in_group (unwi);
4919 1.1 christos elf_next_in_group (unwi) = unw;
4920 1.1 christos }
4921 1.1 christos else
4922 1.1 christos {
4923 1.1 christos elf_next_in_group (unw) = sec;
4924 1.1 christos elf_next_in_group (sec) = unw;
4925 1.1 christos }
4926 1.1 christos elf_sec_group (unw) = group;
4927 1.1 christos }
4928 1.1 christos
4929 1.1 christos /* Fake SHT_GROUP section header. */
4930 1.1 christos elf_section_data (group)->this_hdr.bfd_section = group;
4931 1.1 christos elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
4932 1.1 christos }
4933 1.1 christos }
4934 1.1 christos return TRUE;
4935 1.1 christos }
4936 1.1 christos
4937 1.1 christos static bfd_boolean
4938 1.1 christos elfNN_ia64_hpux_vec (const bfd_target *vec)
4939 1.1 christos {
4940 1.1 christos extern const bfd_target bfd_elfNN_ia64_hpux_big_vec;
4941 1.1 christos return (vec == & bfd_elfNN_ia64_hpux_big_vec);
4942 1.1 christos }
4943 1.1 christos
4944 1.1 christos static void
4945 1.1 christos elfNN_hpux_post_process_headers (bfd *abfd,
4946 1.1 christos struct bfd_link_info *info ATTRIBUTE_UNUSED)
4947 1.1 christos {
4948 1.1 christos Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4949 1.1 christos
4950 1.1 christos i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
4951 1.1 christos i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4952 1.1 christos }
4953 1.1 christos
4954 1.1 christos static bfd_boolean
4955 1.1 christos elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4956 1.1 christos asection *sec, int *retval)
4957 1.1 christos {
4958 1.1 christos if (bfd_is_com_section (sec))
4959 1.1 christos {
4960 1.1 christos *retval = SHN_IA_64_ANSI_COMMON;
4961 1.1 christos return TRUE;
4962 1.1 christos }
4963 1.1 christos return FALSE;
4964 1.1 christos }
4965 1.1 christos
4966 1.1 christos static void
4967 1.1 christos elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4968 1.1 christos asymbol *asym)
4969 1.1 christos {
4970 1.1 christos elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4971 1.1 christos
4972 1.1 christos switch (elfsym->internal_elf_sym.st_shndx)
4973 1.1 christos {
4974 1.1 christos case SHN_IA_64_ANSI_COMMON:
4975 1.1 christos asym->section = bfd_com_section_ptr;
4976 1.1 christos asym->value = elfsym->internal_elf_sym.st_size;
4977 1.1 christos asym->flags &= ~BSF_GLOBAL;
4978 1.1 christos break;
4979 1.1 christos }
4980 1.1 christos }
4981 1.1 christos
4982 1.1 christos #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec
4984 1.1 christos #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4985 1.1 christos #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec
4986 1.1 christos #define TARGET_BIG_NAME "elfNN-ia64-big"
4987 1.1 christos #define ELF_ARCH bfd_arch_ia64
4988 1.1 christos #define ELF_TARGET_ID IA64_ELF_DATA
4989 1.1 christos #define ELF_MACHINE_CODE EM_IA_64
4990 1.1 christos #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4991 1.1 christos #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4992 1.1 christos #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4993 1.1 christos #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
4994 1.1 christos
4995 1.1 christos #define elf_backend_section_from_shdr \
4996 1.1 christos elfNN_ia64_section_from_shdr
4997 1.1 christos #define elf_backend_section_flags \
4998 1.1 christos elfNN_ia64_section_flags
4999 1.1 christos #define elf_backend_fake_sections \
5000 1.1 christos elfNN_ia64_fake_sections
5001 1.1 christos #define elf_backend_final_write_processing \
5002 1.1 christos elfNN_ia64_final_write_processing
5003 1.1 christos #define elf_backend_add_symbol_hook \
5004 1.1 christos elfNN_ia64_add_symbol_hook
5005 1.1 christos #define elf_backend_additional_program_headers \
5006 1.1 christos elfNN_ia64_additional_program_headers
5007 1.1 christos #define elf_backend_modify_segment_map \
5008 1.1 christos elfNN_ia64_modify_segment_map
5009 1.1 christos #define elf_backend_modify_program_headers \
5010 1.1 christos elfNN_ia64_modify_program_headers
5011 1.1 christos #define elf_info_to_howto \
5012 1.1 christos elfNN_ia64_info_to_howto
5013 1.1 christos
5014 1.1 christos #define bfd_elfNN_bfd_reloc_type_lookup \
5015 1.1 christos ia64_elf_reloc_type_lookup
5016 1.1 christos #define bfd_elfNN_bfd_reloc_name_lookup \
5017 1.1 christos ia64_elf_reloc_name_lookup
5018 1.1 christos #define bfd_elfNN_bfd_is_local_label_name \
5019 1.1 christos elfNN_ia64_is_local_label_name
5020 1.1 christos #define bfd_elfNN_bfd_relax_section \
5021 1.1 christos elfNN_ia64_relax_section
5022 1.1 christos
5023 1.1 christos #define elf_backend_object_p \
5024 1.1 christos elfNN_ia64_object_p
5025 1.1 christos
5026 1.1 christos /* Stuff for the BFD linker: */
5027 1.1 christos #define bfd_elfNN_bfd_link_hash_table_create \
5028 1.1 christos elfNN_ia64_hash_table_create
5029 1.1 christos #define bfd_elfNN_bfd_link_hash_table_free \
5030 1.1 christos elfNN_ia64_hash_table_free
5031 1.1 christos #define elf_backend_create_dynamic_sections \
5032 1.1 christos elfNN_ia64_create_dynamic_sections
5033 1.1 christos #define elf_backend_check_relocs \
5034 1.1 christos elfNN_ia64_check_relocs
5035 1.1 christos #define elf_backend_adjust_dynamic_symbol \
5036 1.1 christos elfNN_ia64_adjust_dynamic_symbol
5037 1.1 christos #define elf_backend_size_dynamic_sections \
5038 1.1 christos elfNN_ia64_size_dynamic_sections
5039 1.1 christos #define elf_backend_omit_section_dynsym \
5040 1.1 christos ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
5041 1.1 christos #define elf_backend_relocate_section \
5042 1.1 christos elfNN_ia64_relocate_section
5043 1.1 christos #define elf_backend_finish_dynamic_symbol \
5044 1.1 christos elfNN_ia64_finish_dynamic_symbol
5045 1.1 christos #define elf_backend_finish_dynamic_sections \
5046 1.1 christos elfNN_ia64_finish_dynamic_sections
5047 1.1 christos #define bfd_elfNN_bfd_final_link \
5048 1.1 christos elfNN_ia64_final_link
5049 1.1 christos
5050 1.1 christos #define bfd_elfNN_bfd_merge_private_bfd_data \
5051 1.1 christos elfNN_ia64_merge_private_bfd_data
5052 1.1 christos #define bfd_elfNN_bfd_set_private_flags \
5053 1.1 christos elfNN_ia64_set_private_flags
5054 1.1 christos #define bfd_elfNN_bfd_print_private_bfd_data \
5055 1.1 christos elfNN_ia64_print_private_bfd_data
5056 1.1 christos
5057 1.1 christos #define elf_backend_plt_readonly 1
5058 1.1 christos #define elf_backend_want_plt_sym 0
5059 1.1 christos #define elf_backend_plt_alignment 5
5060 1.1 christos #define elf_backend_got_header_size 0
5061 1.1 christos #define elf_backend_want_got_plt 1
5062 1.1 christos #define elf_backend_may_use_rel_p 1
5063 1.1 christos #define elf_backend_may_use_rela_p 1
5064 1.1 christos #define elf_backend_default_use_rela_p 1
5065 1.1 christos #define elf_backend_want_dynbss 0
5066 1.1 christos #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5067 1.1 christos #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5068 1.1 christos #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5069 1.1 christos #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5070 1.1 christos #define elf_backend_rela_normal 1
5071 1.1 christos #define elf_backend_special_sections elfNN_ia64_special_sections
5072 1.1 christos #define elf_backend_default_execstack 0
5073 1.1 christos
5074 1.1 christos /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5075 1.1 christos SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5076 1.1 christos We don't want to flood users with so many error messages. We turn
5077 1.1 christos off the warning for now. It will be turned on later when the Intel
5078 1.1 christos compiler is fixed. */
5079 1.1 christos #define elf_backend_link_order_error_handler NULL
5080 1.1 christos
5081 1.1 christos #include "elfNN-target.h"
5082 1.1 christos
5083 1.1 christos /* HPUX-specific vectors. */
5084 1.1 christos
5085 1.1 christos #undef TARGET_LITTLE_SYM
5086 1.1 christos #undef TARGET_LITTLE_NAME
5087 1.1 christos #undef TARGET_BIG_SYM
5088 1.1 christos #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec
5089 1.1 christos #undef TARGET_BIG_NAME
5090 1.1 christos #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5091 1.1 christos
5092 1.1 christos /* These are HP-UX specific functions. */
5093 1.1 christos
5094 1.1 christos #undef elf_backend_post_process_headers
5095 1.1 christos #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5096 1.1 christos
5097 1.1 christos #undef elf_backend_section_from_bfd_section
5098 1.1 christos #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5099 1.1 christos
5100 1.1 christos #undef elf_backend_symbol_processing
5101 1.1 christos #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5102 1.1 christos
5103 1.1 christos #undef elf_backend_want_p_paddr_set_to_zero
5104 1.1 christos #define elf_backend_want_p_paddr_set_to_zero 1
5105 1.1 christos
5106 #undef ELF_COMMONPAGESIZE
5107 #undef ELF_OSABI
5108 #define ELF_OSABI ELFOSABI_HPUX
5109
5110 #undef elfNN_bed
5111 #define elfNN_bed elfNN_ia64_hpux_bed
5112
5113 #include "elfNN-target.h"
5114