* elf.c (_bfd_elf_link_hash_copy_indirect): Copy
[binutils.git] / bfd / elfxx-ia64.c
blobdb4b8aca1503db33050b52109a7cdf8c28b7289b
1 /* IA-64 support for 64-bit ELF
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "opcode/ia64.h"
26 #include "elf/ia64.h"
27 #include "objalloc.h"
28 #include "hashtab.h"
30 /* THE RULES for all the stuff the linker creates --
32 GOT Entries created in response to LTOFF or LTOFF_FPTR
33 relocations. Dynamic relocs created for dynamic
34 symbols in an application; REL relocs for locals
35 in a shared library.
37 FPTR The canonical function descriptor. Created for local
38 symbols in applications. Descriptors for dynamic symbols
39 and local symbols in shared libraries are created by
40 ld.so. Thus there are no dynamic relocs against these
41 objects. The FPTR relocs for such _are_ passed through
42 to the dynamic relocation tables.
44 FULL_PLT Created for a PCREL21B relocation against a dynamic symbol.
45 Requires the creation of a PLTOFF entry. This does not
46 require any dynamic relocations.
48 PLTOFF Created by PLTOFF relocations. For local symbols, this
49 is an alternate function descriptor, and in shared libraries
50 requires two REL relocations. Note that this cannot be
51 transformed into an FPTR relocation, since it must be in
52 range of the GP. For dynamic symbols, this is a function
53 descriptor for a MIN_PLT entry, and requires one IPLT reloc.
55 MIN_PLT Created by PLTOFF entries against dynamic symbols. This
56 does not reqire dynamic relocations. */
58 #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
60 typedef struct bfd_hash_entry *(*new_hash_entry_func)
61 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
63 /* In dynamically (linker-) created sections, we generally need to keep track
64 of the place a symbol or expression got allocated to. This is done via hash
65 tables that store entries of the following type. */
67 struct elfNN_ia64_dyn_sym_info
69 /* The addend for which this entry is relevant. */
70 bfd_vma addend;
72 /* Next addend in the list. */
73 struct elfNN_ia64_dyn_sym_info *next;
75 bfd_vma got_offset;
76 bfd_vma fptr_offset;
77 bfd_vma pltoff_offset;
78 bfd_vma plt_offset;
79 bfd_vma plt2_offset;
80 bfd_vma tprel_offset;
81 bfd_vma dtpmod_offset;
82 bfd_vma dtprel_offset;
84 /* The symbol table entry, if any, that this was derrived from. */
85 struct elf_link_hash_entry *h;
87 /* Used to count non-got, non-plt relocations for delayed sizing
88 of relocation sections. */
89 struct elfNN_ia64_dyn_reloc_entry
91 struct elfNN_ia64_dyn_reloc_entry *next;
92 asection *srel;
93 int type;
94 int count;
95 } *reloc_entries;
97 /* TRUE when the section contents have been updated. */
98 unsigned got_done : 1;
99 unsigned fptr_done : 1;
100 unsigned pltoff_done : 1;
101 unsigned tprel_done : 1;
102 unsigned dtpmod_done : 1;
103 unsigned dtprel_done : 1;
105 /* TRUE for the different kinds of linker data we want created. */
106 unsigned want_got : 1;
107 unsigned want_gotx : 1;
108 unsigned want_fptr : 1;
109 unsigned want_ltoff_fptr : 1;
110 unsigned want_plt : 1;
111 unsigned want_plt2 : 1;
112 unsigned want_pltoff : 1;
113 unsigned want_tprel : 1;
114 unsigned want_dtpmod : 1;
115 unsigned want_dtprel : 1;
118 struct elfNN_ia64_local_hash_entry
120 int id;
121 unsigned int r_sym;
122 struct elfNN_ia64_dyn_sym_info *info;
124 /* TRUE if this hash entry's addends was translated for
125 SHF_MERGE optimization. */
126 unsigned sec_merge_done : 1;
129 struct elfNN_ia64_link_hash_entry
131 struct elf_link_hash_entry root;
132 struct elfNN_ia64_dyn_sym_info *info;
135 struct elfNN_ia64_link_hash_table
137 /* The main hash table. */
138 struct elf_link_hash_table root;
140 asection *got_sec; /* the linkage table section (or NULL) */
141 asection *rel_got_sec; /* dynamic relocation section for same */
142 asection *fptr_sec; /* function descriptor table (or NULL) */
143 asection *rel_fptr_sec; /* dynamic relocation section for same */
144 asection *plt_sec; /* the primary plt section (or NULL) */
145 asection *pltoff_sec; /* private descriptors for plt (or NULL) */
146 asection *rel_pltoff_sec; /* dynamic relocation section for same */
148 bfd_size_type minplt_entries; /* number of minplt entries */
149 unsigned reltext : 1; /* are there relocs against readonly sections? */
150 unsigned self_dtpmod_done : 1;/* has self DTPMOD entry been finished? */
151 bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry */
153 htab_t loc_hash_table;
154 void *loc_hash_memory;
157 struct elfNN_ia64_allocate_data
159 struct bfd_link_info *info;
160 bfd_size_type ofs;
163 #define elfNN_ia64_hash_table(p) \
164 ((struct elfNN_ia64_link_hash_table *) ((p)->hash))
166 static bfd_reloc_status_type elfNN_ia64_reloc
167 PARAMS ((bfd *abfd, arelent *reloc, asymbol *sym, PTR data,
168 asection *input_section, bfd *output_bfd, char **error_message));
169 static reloc_howto_type * lookup_howto
170 PARAMS ((unsigned int rtype));
171 static reloc_howto_type *elfNN_ia64_reloc_type_lookup
172 PARAMS ((bfd *abfd, bfd_reloc_code_real_type bfd_code));
173 static void elfNN_ia64_info_to_howto
174 PARAMS ((bfd *abfd, arelent *bfd_reloc, Elf_Internal_Rela *elf_reloc));
175 static bfd_boolean elfNN_ia64_relax_section
176 PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info,
177 bfd_boolean *again));
178 static void elfNN_ia64_relax_ldxmov
179 PARAMS((bfd *abfd, bfd_byte *contents, bfd_vma off));
180 static bfd_boolean is_unwind_section_name
181 PARAMS ((bfd *abfd, const char *));
182 static bfd_boolean elfNN_ia64_section_from_shdr
183 PARAMS ((bfd *, Elf_Internal_Shdr *, const char *));
184 static bfd_boolean elfNN_ia64_section_flags
185 PARAMS ((flagword *, Elf_Internal_Shdr *));
186 static bfd_boolean elfNN_ia64_fake_sections
187 PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec));
188 static void elfNN_ia64_final_write_processing
189 PARAMS ((bfd *abfd, bfd_boolean linker));
190 static bfd_boolean elfNN_ia64_add_symbol_hook
191 PARAMS ((bfd *abfd, struct bfd_link_info *info, const Elf_Internal_Sym *sym,
192 const char **namep, flagword *flagsp, asection **secp,
193 bfd_vma *valp));
194 static int elfNN_ia64_additional_program_headers
195 PARAMS ((bfd *abfd));
196 static bfd_boolean elfNN_ia64_modify_segment_map
197 PARAMS ((bfd *));
198 static bfd_boolean elfNN_ia64_is_local_label_name
199 PARAMS ((bfd *abfd, const char *name));
200 static bfd_boolean elfNN_ia64_dynamic_symbol_p
201 PARAMS ((struct elf_link_hash_entry *h, struct bfd_link_info *info, int));
202 static struct bfd_hash_entry *elfNN_ia64_new_elf_hash_entry
203 PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
204 const char *string));
205 static void elfNN_ia64_hash_copy_indirect
206 PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
207 struct elf_link_hash_entry *));
208 static void elfNN_ia64_hash_hide_symbol
209 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
210 static hashval_t elfNN_ia64_local_htab_hash PARAMS ((const void *));
211 static int elfNN_ia64_local_htab_eq PARAMS ((const void *ptr1,
212 const void *ptr2));
213 static struct bfd_link_hash_table *elfNN_ia64_hash_table_create
214 PARAMS ((bfd *abfd));
215 static void elfNN_ia64_hash_table_free
216 PARAMS ((struct bfd_link_hash_table *hash));
217 static bfd_boolean elfNN_ia64_global_dyn_sym_thunk
218 PARAMS ((struct bfd_hash_entry *, PTR));
219 static int elfNN_ia64_local_dyn_sym_thunk
220 PARAMS ((void **, PTR));
221 static void elfNN_ia64_dyn_sym_traverse
222 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
223 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR),
224 PTR info));
225 static bfd_boolean elfNN_ia64_create_dynamic_sections
226 PARAMS ((bfd *abfd, struct bfd_link_info *info));
227 static struct elfNN_ia64_local_hash_entry * get_local_sym_hash
228 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
229 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create));
230 static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
231 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
232 struct elf_link_hash_entry *h,
233 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create));
234 static asection *get_got
235 PARAMS ((bfd *abfd, struct bfd_link_info *info,
236 struct elfNN_ia64_link_hash_table *ia64_info));
237 static asection *get_fptr
238 PARAMS ((bfd *abfd, struct bfd_link_info *info,
239 struct elfNN_ia64_link_hash_table *ia64_info));
240 static asection *get_pltoff
241 PARAMS ((bfd *abfd, struct bfd_link_info *info,
242 struct elfNN_ia64_link_hash_table *ia64_info));
243 static asection *get_reloc_section
244 PARAMS ((bfd *abfd, struct elfNN_ia64_link_hash_table *ia64_info,
245 asection *sec, bfd_boolean create));
246 static bfd_boolean count_dyn_reloc
247 PARAMS ((bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
248 asection *srel, int type));
249 static bfd_boolean elfNN_ia64_check_relocs
250 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
251 const Elf_Internal_Rela *relocs));
252 static bfd_boolean elfNN_ia64_adjust_dynamic_symbol
253 PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
254 static long global_sym_index
255 PARAMS ((struct elf_link_hash_entry *h));
256 static bfd_boolean allocate_fptr
257 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
258 static bfd_boolean allocate_global_data_got
259 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
260 static bfd_boolean allocate_global_fptr_got
261 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
262 static bfd_boolean allocate_local_got
263 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
264 static bfd_boolean allocate_pltoff_entries
265 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
266 static bfd_boolean allocate_plt_entries
267 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
268 static bfd_boolean allocate_plt2_entries
269 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
270 static bfd_boolean allocate_dynrel_entries
271 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
272 static bfd_boolean elfNN_ia64_size_dynamic_sections
273 PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
274 static bfd_reloc_status_type elfNN_ia64_install_value
275 PARAMS ((bfd *abfd, bfd_byte *hit_addr, bfd_vma val, unsigned int r_type));
276 static void elfNN_ia64_install_dyn_reloc
277 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
278 asection *srel, bfd_vma offset, unsigned int type,
279 long dynindx, bfd_vma addend));
280 static bfd_vma set_got_entry
281 PARAMS ((bfd *abfd, struct bfd_link_info *info,
282 struct elfNN_ia64_dyn_sym_info *dyn_i, long dynindx,
283 bfd_vma addend, bfd_vma value, unsigned int dyn_r_type));
284 static bfd_vma set_fptr_entry
285 PARAMS ((bfd *abfd, struct bfd_link_info *info,
286 struct elfNN_ia64_dyn_sym_info *dyn_i,
287 bfd_vma value));
288 static bfd_vma set_pltoff_entry
289 PARAMS ((bfd *abfd, struct bfd_link_info *info,
290 struct elfNN_ia64_dyn_sym_info *dyn_i,
291 bfd_vma value, bfd_boolean));
292 static bfd_vma elfNN_ia64_tprel_base
293 PARAMS ((struct bfd_link_info *info));
294 static bfd_vma elfNN_ia64_dtprel_base
295 PARAMS ((struct bfd_link_info *info));
296 static int elfNN_ia64_unwind_entry_compare
297 PARAMS ((const PTR, const PTR));
298 static bfd_boolean elfNN_ia64_choose_gp
299 PARAMS ((bfd *abfd, struct bfd_link_info *info));
300 static bfd_boolean elfNN_ia64_final_link
301 PARAMS ((bfd *abfd, struct bfd_link_info *info));
302 static bfd_boolean elfNN_ia64_relocate_section
303 PARAMS ((bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd,
304 asection *input_section, bfd_byte *contents,
305 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
306 asection **local_sections));
307 static bfd_boolean elfNN_ia64_finish_dynamic_symbol
308 PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
309 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
310 static bfd_boolean elfNN_ia64_finish_dynamic_sections
311 PARAMS ((bfd *abfd, struct bfd_link_info *info));
312 static bfd_boolean elfNN_ia64_set_private_flags
313 PARAMS ((bfd *abfd, flagword flags));
314 static bfd_boolean elfNN_ia64_merge_private_bfd_data
315 PARAMS ((bfd *ibfd, bfd *obfd));
316 static bfd_boolean elfNN_ia64_print_private_bfd_data
317 PARAMS ((bfd *abfd, PTR ptr));
318 static enum elf_reloc_type_class elfNN_ia64_reloc_type_class
319 PARAMS ((const Elf_Internal_Rela *));
320 static bfd_boolean elfNN_ia64_hpux_vec
321 PARAMS ((const bfd_target *vec));
322 static void elfNN_hpux_post_process_headers
323 PARAMS ((bfd *abfd, struct bfd_link_info *info));
324 bfd_boolean elfNN_hpux_backend_section_from_bfd_section
325 PARAMS ((bfd *abfd, asection *sec, int *retval));
327 /* ia64-specific relocation. */
329 /* Perform a relocation. Not much to do here as all the hard work is
330 done in elfNN_ia64_final_link_relocate. */
331 static bfd_reloc_status_type
332 elfNN_ia64_reloc (abfd, reloc, sym, data, input_section,
333 output_bfd, error_message)
334 bfd *abfd ATTRIBUTE_UNUSED;
335 arelent *reloc;
336 asymbol *sym ATTRIBUTE_UNUSED;
337 PTR data ATTRIBUTE_UNUSED;
338 asection *input_section;
339 bfd *output_bfd;
340 char **error_message;
342 if (output_bfd)
344 reloc->address += input_section->output_offset;
345 return bfd_reloc_ok;
348 if (input_section->flags & SEC_DEBUGGING)
349 return bfd_reloc_continue;
351 *error_message = "Unsupported call to elfNN_ia64_reloc";
352 return bfd_reloc_notsupported;
355 #define IA64_HOWTO(TYPE, NAME, SIZE, PCREL, IN) \
356 HOWTO (TYPE, 0, SIZE, 0, PCREL, 0, complain_overflow_signed, \
357 elfNN_ia64_reloc, NAME, FALSE, 0, -1, IN)
359 /* This table has to be sorted according to increasing number of the
360 TYPE field. */
361 static reloc_howto_type ia64_howto_table[] =
363 IA64_HOWTO (R_IA64_NONE, "NONE", 0, FALSE, TRUE),
365 IA64_HOWTO (R_IA64_IMM14, "IMM14", 0, FALSE, TRUE),
366 IA64_HOWTO (R_IA64_IMM22, "IMM22", 0, FALSE, TRUE),
367 IA64_HOWTO (R_IA64_IMM64, "IMM64", 0, FALSE, TRUE),
368 IA64_HOWTO (R_IA64_DIR32MSB, "DIR32MSB", 2, FALSE, TRUE),
369 IA64_HOWTO (R_IA64_DIR32LSB, "DIR32LSB", 2, FALSE, TRUE),
370 IA64_HOWTO (R_IA64_DIR64MSB, "DIR64MSB", 4, FALSE, TRUE),
371 IA64_HOWTO (R_IA64_DIR64LSB, "DIR64LSB", 4, FALSE, TRUE),
373 IA64_HOWTO (R_IA64_GPREL22, "GPREL22", 0, FALSE, TRUE),
374 IA64_HOWTO (R_IA64_GPREL64I, "GPREL64I", 0, FALSE, TRUE),
375 IA64_HOWTO (R_IA64_GPREL32MSB, "GPREL32MSB", 2, FALSE, TRUE),
376 IA64_HOWTO (R_IA64_GPREL32LSB, "GPREL32LSB", 2, FALSE, TRUE),
377 IA64_HOWTO (R_IA64_GPREL64MSB, "GPREL64MSB", 4, FALSE, TRUE),
378 IA64_HOWTO (R_IA64_GPREL64LSB, "GPREL64LSB", 4, FALSE, TRUE),
380 IA64_HOWTO (R_IA64_LTOFF22, "LTOFF22", 0, FALSE, TRUE),
381 IA64_HOWTO (R_IA64_LTOFF64I, "LTOFF64I", 0, FALSE, TRUE),
383 IA64_HOWTO (R_IA64_PLTOFF22, "PLTOFF22", 0, FALSE, TRUE),
384 IA64_HOWTO (R_IA64_PLTOFF64I, "PLTOFF64I", 0, FALSE, TRUE),
385 IA64_HOWTO (R_IA64_PLTOFF64MSB, "PLTOFF64MSB", 4, FALSE, TRUE),
386 IA64_HOWTO (R_IA64_PLTOFF64LSB, "PLTOFF64LSB", 4, FALSE, TRUE),
388 IA64_HOWTO (R_IA64_FPTR64I, "FPTR64I", 0, FALSE, TRUE),
389 IA64_HOWTO (R_IA64_FPTR32MSB, "FPTR32MSB", 2, FALSE, TRUE),
390 IA64_HOWTO (R_IA64_FPTR32LSB, "FPTR32LSB", 2, FALSE, TRUE),
391 IA64_HOWTO (R_IA64_FPTR64MSB, "FPTR64MSB", 4, FALSE, TRUE),
392 IA64_HOWTO (R_IA64_FPTR64LSB, "FPTR64LSB", 4, FALSE, TRUE),
394 IA64_HOWTO (R_IA64_PCREL60B, "PCREL60B", 0, TRUE, TRUE),
395 IA64_HOWTO (R_IA64_PCREL21B, "PCREL21B", 0, TRUE, TRUE),
396 IA64_HOWTO (R_IA64_PCREL21M, "PCREL21M", 0, TRUE, TRUE),
397 IA64_HOWTO (R_IA64_PCREL21F, "PCREL21F", 0, TRUE, TRUE),
398 IA64_HOWTO (R_IA64_PCREL32MSB, "PCREL32MSB", 2, TRUE, TRUE),
399 IA64_HOWTO (R_IA64_PCREL32LSB, "PCREL32LSB", 2, TRUE, TRUE),
400 IA64_HOWTO (R_IA64_PCREL64MSB, "PCREL64MSB", 4, TRUE, TRUE),
401 IA64_HOWTO (R_IA64_PCREL64LSB, "PCREL64LSB", 4, TRUE, TRUE),
403 IA64_HOWTO (R_IA64_LTOFF_FPTR22, "LTOFF_FPTR22", 0, FALSE, TRUE),
404 IA64_HOWTO (R_IA64_LTOFF_FPTR64I, "LTOFF_FPTR64I", 0, FALSE, TRUE),
405 IA64_HOWTO (R_IA64_LTOFF_FPTR32MSB, "LTOFF_FPTR32MSB", 2, FALSE, TRUE),
406 IA64_HOWTO (R_IA64_LTOFF_FPTR32LSB, "LTOFF_FPTR32LSB", 2, FALSE, TRUE),
407 IA64_HOWTO (R_IA64_LTOFF_FPTR64MSB, "LTOFF_FPTR64MSB", 4, FALSE, TRUE),
408 IA64_HOWTO (R_IA64_LTOFF_FPTR64LSB, "LTOFF_FPTR64LSB", 4, FALSE, TRUE),
410 IA64_HOWTO (R_IA64_SEGREL32MSB, "SEGREL32MSB", 2, FALSE, TRUE),
411 IA64_HOWTO (R_IA64_SEGREL32LSB, "SEGREL32LSB", 2, FALSE, TRUE),
412 IA64_HOWTO (R_IA64_SEGREL64MSB, "SEGREL64MSB", 4, FALSE, TRUE),
413 IA64_HOWTO (R_IA64_SEGREL64LSB, "SEGREL64LSB", 4, FALSE, TRUE),
415 IA64_HOWTO (R_IA64_SECREL32MSB, "SECREL32MSB", 2, FALSE, TRUE),
416 IA64_HOWTO (R_IA64_SECREL32LSB, "SECREL32LSB", 2, FALSE, TRUE),
417 IA64_HOWTO (R_IA64_SECREL64MSB, "SECREL64MSB", 4, FALSE, TRUE),
418 IA64_HOWTO (R_IA64_SECREL64LSB, "SECREL64LSB", 4, FALSE, TRUE),
420 IA64_HOWTO (R_IA64_REL32MSB, "REL32MSB", 2, FALSE, TRUE),
421 IA64_HOWTO (R_IA64_REL32LSB, "REL32LSB", 2, FALSE, TRUE),
422 IA64_HOWTO (R_IA64_REL64MSB, "REL64MSB", 4, FALSE, TRUE),
423 IA64_HOWTO (R_IA64_REL64LSB, "REL64LSB", 4, FALSE, TRUE),
425 IA64_HOWTO (R_IA64_LTV32MSB, "LTV32MSB", 2, FALSE, TRUE),
426 IA64_HOWTO (R_IA64_LTV32LSB, "LTV32LSB", 2, FALSE, TRUE),
427 IA64_HOWTO (R_IA64_LTV64MSB, "LTV64MSB", 4, FALSE, TRUE),
428 IA64_HOWTO (R_IA64_LTV64LSB, "LTV64LSB", 4, FALSE, TRUE),
430 IA64_HOWTO (R_IA64_PCREL21BI, "PCREL21BI", 0, TRUE, TRUE),
431 IA64_HOWTO (R_IA64_PCREL22, "PCREL22", 0, TRUE, TRUE),
432 IA64_HOWTO (R_IA64_PCREL64I, "PCREL64I", 0, TRUE, TRUE),
434 IA64_HOWTO (R_IA64_IPLTMSB, "IPLTMSB", 4, FALSE, TRUE),
435 IA64_HOWTO (R_IA64_IPLTLSB, "IPLTLSB", 4, FALSE, TRUE),
436 IA64_HOWTO (R_IA64_COPY, "COPY", 4, FALSE, TRUE),
437 IA64_HOWTO (R_IA64_LTOFF22X, "LTOFF22X", 0, FALSE, TRUE),
438 IA64_HOWTO (R_IA64_LDXMOV, "LDXMOV", 0, FALSE, TRUE),
440 IA64_HOWTO (R_IA64_TPREL14, "TPREL14", 0, FALSE, FALSE),
441 IA64_HOWTO (R_IA64_TPREL22, "TPREL22", 0, FALSE, FALSE),
442 IA64_HOWTO (R_IA64_TPREL64I, "TPREL64I", 0, FALSE, FALSE),
443 IA64_HOWTO (R_IA64_TPREL64MSB, "TPREL64MSB", 4, FALSE, FALSE),
444 IA64_HOWTO (R_IA64_TPREL64LSB, "TPREL64LSB", 4, FALSE, FALSE),
445 IA64_HOWTO (R_IA64_LTOFF_TPREL22, "LTOFF_TPREL22", 0, FALSE, FALSE),
447 IA64_HOWTO (R_IA64_DTPMOD64MSB, "TPREL64MSB", 4, FALSE, FALSE),
448 IA64_HOWTO (R_IA64_DTPMOD64LSB, "TPREL64LSB", 4, FALSE, FALSE),
449 IA64_HOWTO (R_IA64_LTOFF_DTPMOD22, "LTOFF_DTPMOD22", 0, FALSE, FALSE),
451 IA64_HOWTO (R_IA64_DTPREL14, "DTPREL14", 0, FALSE, FALSE),
452 IA64_HOWTO (R_IA64_DTPREL22, "DTPREL22", 0, FALSE, FALSE),
453 IA64_HOWTO (R_IA64_DTPREL64I, "DTPREL64I", 0, FALSE, FALSE),
454 IA64_HOWTO (R_IA64_DTPREL32MSB, "DTPREL32MSB", 2, FALSE, FALSE),
455 IA64_HOWTO (R_IA64_DTPREL32LSB, "DTPREL32LSB", 2, FALSE, FALSE),
456 IA64_HOWTO (R_IA64_DTPREL64MSB, "DTPREL64MSB", 4, FALSE, FALSE),
457 IA64_HOWTO (R_IA64_DTPREL64LSB, "DTPREL64LSB", 4, FALSE, FALSE),
458 IA64_HOWTO (R_IA64_LTOFF_DTPREL22, "LTOFF_DTPREL22", 0, FALSE, FALSE),
461 static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1];
463 /* Given a BFD reloc type, return the matching HOWTO structure. */
465 static reloc_howto_type *
466 lookup_howto (rtype)
467 unsigned int rtype;
469 static int inited = 0;
470 int i;
472 if (!inited)
474 inited = 1;
476 memset (elf_code_to_howto_index, 0xff, sizeof (elf_code_to_howto_index));
477 for (i = 0; i < NELEMS (ia64_howto_table); ++i)
478 elf_code_to_howto_index[ia64_howto_table[i].type] = i;
481 BFD_ASSERT (rtype <= R_IA64_MAX_RELOC_CODE);
482 i = elf_code_to_howto_index[rtype];
483 if (i >= NELEMS (ia64_howto_table))
484 return 0;
485 return ia64_howto_table + i;
488 static reloc_howto_type*
489 elfNN_ia64_reloc_type_lookup (abfd, bfd_code)
490 bfd *abfd ATTRIBUTE_UNUSED;
491 bfd_reloc_code_real_type bfd_code;
493 unsigned int rtype;
495 switch (bfd_code)
497 case BFD_RELOC_NONE: rtype = R_IA64_NONE; break;
499 case BFD_RELOC_IA64_IMM14: rtype = R_IA64_IMM14; break;
500 case BFD_RELOC_IA64_IMM22: rtype = R_IA64_IMM22; break;
501 case BFD_RELOC_IA64_IMM64: rtype = R_IA64_IMM64; break;
503 case BFD_RELOC_IA64_DIR32MSB: rtype = R_IA64_DIR32MSB; break;
504 case BFD_RELOC_IA64_DIR32LSB: rtype = R_IA64_DIR32LSB; break;
505 case BFD_RELOC_IA64_DIR64MSB: rtype = R_IA64_DIR64MSB; break;
506 case BFD_RELOC_IA64_DIR64LSB: rtype = R_IA64_DIR64LSB; break;
508 case BFD_RELOC_IA64_GPREL22: rtype = R_IA64_GPREL22; break;
509 case BFD_RELOC_IA64_GPREL64I: rtype = R_IA64_GPREL64I; break;
510 case BFD_RELOC_IA64_GPREL32MSB: rtype = R_IA64_GPREL32MSB; break;
511 case BFD_RELOC_IA64_GPREL32LSB: rtype = R_IA64_GPREL32LSB; break;
512 case BFD_RELOC_IA64_GPREL64MSB: rtype = R_IA64_GPREL64MSB; break;
513 case BFD_RELOC_IA64_GPREL64LSB: rtype = R_IA64_GPREL64LSB; break;
515 case BFD_RELOC_IA64_LTOFF22: rtype = R_IA64_LTOFF22; break;
516 case BFD_RELOC_IA64_LTOFF64I: rtype = R_IA64_LTOFF64I; break;
518 case BFD_RELOC_IA64_PLTOFF22: rtype = R_IA64_PLTOFF22; break;
519 case BFD_RELOC_IA64_PLTOFF64I: rtype = R_IA64_PLTOFF64I; break;
520 case BFD_RELOC_IA64_PLTOFF64MSB: rtype = R_IA64_PLTOFF64MSB; break;
521 case BFD_RELOC_IA64_PLTOFF64LSB: rtype = R_IA64_PLTOFF64LSB; break;
522 case BFD_RELOC_IA64_FPTR64I: rtype = R_IA64_FPTR64I; break;
523 case BFD_RELOC_IA64_FPTR32MSB: rtype = R_IA64_FPTR32MSB; break;
524 case BFD_RELOC_IA64_FPTR32LSB: rtype = R_IA64_FPTR32LSB; break;
525 case BFD_RELOC_IA64_FPTR64MSB: rtype = R_IA64_FPTR64MSB; break;
526 case BFD_RELOC_IA64_FPTR64LSB: rtype = R_IA64_FPTR64LSB; break;
528 case BFD_RELOC_IA64_PCREL21B: rtype = R_IA64_PCREL21B; break;
529 case BFD_RELOC_IA64_PCREL21BI: rtype = R_IA64_PCREL21BI; break;
530 case BFD_RELOC_IA64_PCREL21M: rtype = R_IA64_PCREL21M; break;
531 case BFD_RELOC_IA64_PCREL21F: rtype = R_IA64_PCREL21F; break;
532 case BFD_RELOC_IA64_PCREL22: rtype = R_IA64_PCREL22; break;
533 case BFD_RELOC_IA64_PCREL60B: rtype = R_IA64_PCREL60B; break;
534 case BFD_RELOC_IA64_PCREL64I: rtype = R_IA64_PCREL64I; break;
535 case BFD_RELOC_IA64_PCREL32MSB: rtype = R_IA64_PCREL32MSB; break;
536 case BFD_RELOC_IA64_PCREL32LSB: rtype = R_IA64_PCREL32LSB; break;
537 case BFD_RELOC_IA64_PCREL64MSB: rtype = R_IA64_PCREL64MSB; break;
538 case BFD_RELOC_IA64_PCREL64LSB: rtype = R_IA64_PCREL64LSB; break;
540 case BFD_RELOC_IA64_LTOFF_FPTR22: rtype = R_IA64_LTOFF_FPTR22; break;
541 case BFD_RELOC_IA64_LTOFF_FPTR64I: rtype = R_IA64_LTOFF_FPTR64I; break;
542 case BFD_RELOC_IA64_LTOFF_FPTR32MSB: rtype = R_IA64_LTOFF_FPTR32MSB; break;
543 case BFD_RELOC_IA64_LTOFF_FPTR32LSB: rtype = R_IA64_LTOFF_FPTR32LSB; break;
544 case BFD_RELOC_IA64_LTOFF_FPTR64MSB: rtype = R_IA64_LTOFF_FPTR64MSB; break;
545 case BFD_RELOC_IA64_LTOFF_FPTR64LSB: rtype = R_IA64_LTOFF_FPTR64LSB; break;
547 case BFD_RELOC_IA64_SEGREL32MSB: rtype = R_IA64_SEGREL32MSB; break;
548 case BFD_RELOC_IA64_SEGREL32LSB: rtype = R_IA64_SEGREL32LSB; break;
549 case BFD_RELOC_IA64_SEGREL64MSB: rtype = R_IA64_SEGREL64MSB; break;
550 case BFD_RELOC_IA64_SEGREL64LSB: rtype = R_IA64_SEGREL64LSB; break;
552 case BFD_RELOC_IA64_SECREL32MSB: rtype = R_IA64_SECREL32MSB; break;
553 case BFD_RELOC_IA64_SECREL32LSB: rtype = R_IA64_SECREL32LSB; break;
554 case BFD_RELOC_IA64_SECREL64MSB: rtype = R_IA64_SECREL64MSB; break;
555 case BFD_RELOC_IA64_SECREL64LSB: rtype = R_IA64_SECREL64LSB; break;
557 case BFD_RELOC_IA64_REL32MSB: rtype = R_IA64_REL32MSB; break;
558 case BFD_RELOC_IA64_REL32LSB: rtype = R_IA64_REL32LSB; break;
559 case BFD_RELOC_IA64_REL64MSB: rtype = R_IA64_REL64MSB; break;
560 case BFD_RELOC_IA64_REL64LSB: rtype = R_IA64_REL64LSB; break;
562 case BFD_RELOC_IA64_LTV32MSB: rtype = R_IA64_LTV32MSB; break;
563 case BFD_RELOC_IA64_LTV32LSB: rtype = R_IA64_LTV32LSB; break;
564 case BFD_RELOC_IA64_LTV64MSB: rtype = R_IA64_LTV64MSB; break;
565 case BFD_RELOC_IA64_LTV64LSB: rtype = R_IA64_LTV64LSB; break;
567 case BFD_RELOC_IA64_IPLTMSB: rtype = R_IA64_IPLTMSB; break;
568 case BFD_RELOC_IA64_IPLTLSB: rtype = R_IA64_IPLTLSB; break;
569 case BFD_RELOC_IA64_COPY: rtype = R_IA64_COPY; break;
570 case BFD_RELOC_IA64_LTOFF22X: rtype = R_IA64_LTOFF22X; break;
571 case BFD_RELOC_IA64_LDXMOV: rtype = R_IA64_LDXMOV; break;
573 case BFD_RELOC_IA64_TPREL14: rtype = R_IA64_TPREL14; break;
574 case BFD_RELOC_IA64_TPREL22: rtype = R_IA64_TPREL22; break;
575 case BFD_RELOC_IA64_TPREL64I: rtype = R_IA64_TPREL64I; break;
576 case BFD_RELOC_IA64_TPREL64MSB: rtype = R_IA64_TPREL64MSB; break;
577 case BFD_RELOC_IA64_TPREL64LSB: rtype = R_IA64_TPREL64LSB; break;
578 case BFD_RELOC_IA64_LTOFF_TPREL22: rtype = R_IA64_LTOFF_TPREL22; break;
580 case BFD_RELOC_IA64_DTPMOD64MSB: rtype = R_IA64_DTPMOD64MSB; break;
581 case BFD_RELOC_IA64_DTPMOD64LSB: rtype = R_IA64_DTPMOD64LSB; break;
582 case BFD_RELOC_IA64_LTOFF_DTPMOD22: rtype = R_IA64_LTOFF_DTPMOD22; break;
584 case BFD_RELOC_IA64_DTPREL14: rtype = R_IA64_DTPREL14; break;
585 case BFD_RELOC_IA64_DTPREL22: rtype = R_IA64_DTPREL22; break;
586 case BFD_RELOC_IA64_DTPREL64I: rtype = R_IA64_DTPREL64I; break;
587 case BFD_RELOC_IA64_DTPREL32MSB: rtype = R_IA64_DTPREL32MSB; break;
588 case BFD_RELOC_IA64_DTPREL32LSB: rtype = R_IA64_DTPREL32LSB; break;
589 case BFD_RELOC_IA64_DTPREL64MSB: rtype = R_IA64_DTPREL64MSB; break;
590 case BFD_RELOC_IA64_DTPREL64LSB: rtype = R_IA64_DTPREL64LSB; break;
591 case BFD_RELOC_IA64_LTOFF_DTPREL22: rtype = R_IA64_LTOFF_DTPREL22; break;
593 default: return 0;
595 return lookup_howto (rtype);
598 /* Given a ELF reloc, return the matching HOWTO structure. */
600 static void
601 elfNN_ia64_info_to_howto (abfd, bfd_reloc, elf_reloc)
602 bfd *abfd ATTRIBUTE_UNUSED;
603 arelent *bfd_reloc;
604 Elf_Internal_Rela *elf_reloc;
606 bfd_reloc->howto
607 = lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info));
610 #define PLT_HEADER_SIZE (3 * 16)
611 #define PLT_MIN_ENTRY_SIZE (1 * 16)
612 #define PLT_FULL_ENTRY_SIZE (2 * 16)
613 #define PLT_RESERVED_WORDS 3
615 static const bfd_byte plt_header[PLT_HEADER_SIZE] =
617 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
618 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
619 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
620 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
621 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
622 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
623 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
624 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
625 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
628 static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
630 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
631 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
632 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
635 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
637 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
638 0x00, 0x41, 0x3c, 0x30, 0x28, 0xc0, /* ld8 r16=[r15],8 */
639 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
640 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
641 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
642 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
645 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
647 static const bfd_byte oor_brl[16] =
649 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
650 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
651 0x00, 0x00, 0x00, 0xc0
654 static const bfd_byte oor_ip[48] =
656 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
657 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
658 0x01, 0x00, 0x00, 0x60,
659 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
660 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
661 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
662 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
663 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
664 0x60, 0x00, 0x80, 0x00 /* br b6;; */
667 static size_t oor_branch_size = sizeof (oor_brl);
669 void
670 bfd_elfNN_ia64_after_parse (int itanium)
672 oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
676 /* These functions do relaxation for IA-64 ELF. */
678 static bfd_boolean
679 elfNN_ia64_relax_section (abfd, sec, link_info, again)
680 bfd *abfd;
681 asection *sec;
682 struct bfd_link_info *link_info;
683 bfd_boolean *again;
685 struct one_fixup
687 struct one_fixup *next;
688 asection *tsec;
689 bfd_vma toff;
690 bfd_vma trampoff;
693 Elf_Internal_Shdr *symtab_hdr;
694 Elf_Internal_Rela *internal_relocs;
695 Elf_Internal_Rela *irel, *irelend;
696 bfd_byte *contents;
697 Elf_Internal_Sym *isymbuf = NULL;
698 struct elfNN_ia64_link_hash_table *ia64_info;
699 struct one_fixup *fixups = NULL;
700 bfd_boolean changed_contents = FALSE;
701 bfd_boolean changed_relocs = FALSE;
702 bfd_boolean changed_got = FALSE;
703 bfd_vma gp = 0;
705 /* Assume we're not going to change any sizes, and we'll only need
706 one pass. */
707 *again = FALSE;
709 /* Don't even try to relax for non-ELF outputs. */
710 if (link_info->hash->creator->flavour != bfd_target_elf_flavour)
711 return FALSE;
713 /* Nothing to do if there are no relocations or there is no need for
714 the relax finalize pass. */
715 if ((sec->flags & SEC_RELOC) == 0
716 || sec->reloc_count == 0
717 || (link_info->relax_finalizing
718 && sec->need_finalize_relax == 0))
719 return TRUE;
721 /* If this is the first time we have been called for this section,
722 initialize the cooked size. */
723 if (sec->_cooked_size == 0)
724 sec->_cooked_size = sec->_raw_size;
726 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
728 /* Load the relocations for this section. */
729 internal_relocs = (_bfd_elf_link_read_relocs
730 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
731 link_info->keep_memory));
732 if (internal_relocs == NULL)
733 return FALSE;
735 ia64_info = elfNN_ia64_hash_table (link_info);
736 irelend = internal_relocs + sec->reloc_count;
738 /* Get the section contents. */
739 if (elf_section_data (sec)->this_hdr.contents != NULL)
740 contents = elf_section_data (sec)->this_hdr.contents;
741 else
743 contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
744 if (contents == NULL)
745 goto error_return;
747 if (! bfd_get_section_contents (abfd, sec, contents,
748 (file_ptr) 0, sec->_raw_size))
749 goto error_return;
752 for (irel = internal_relocs; irel < irelend; irel++)
754 unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
755 bfd_vma symaddr, reladdr, trampoff, toff, roff;
756 asection *tsec;
757 struct one_fixup *f;
758 bfd_size_type amt;
759 bfd_boolean is_branch;
760 struct elfNN_ia64_dyn_sym_info *dyn_i;
762 switch (r_type)
764 case R_IA64_PCREL21B:
765 case R_IA64_PCREL21BI:
766 case R_IA64_PCREL21M:
767 case R_IA64_PCREL21F:
768 if (link_info->relax_finalizing)
769 continue;
770 is_branch = TRUE;
771 break;
773 case R_IA64_LTOFF22X:
774 case R_IA64_LDXMOV:
775 if (!link_info->relax_finalizing)
777 sec->need_finalize_relax = 1;
778 continue;
780 is_branch = FALSE;
781 break;
783 default:
784 continue;
787 /* Get the value of the symbol referred to by the reloc. */
788 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
790 /* A local symbol. */
791 Elf_Internal_Sym *isym;
793 /* Read this BFD's local symbols. */
794 if (isymbuf == NULL)
796 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
797 if (isymbuf == NULL)
798 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
799 symtab_hdr->sh_info, 0,
800 NULL, NULL, NULL);
801 if (isymbuf == 0)
802 goto error_return;
805 isym = isymbuf + ELFNN_R_SYM (irel->r_info);
806 if (isym->st_shndx == SHN_UNDEF)
807 continue; /* We can't do anthing with undefined symbols. */
808 else if (isym->st_shndx == SHN_ABS)
809 tsec = bfd_abs_section_ptr;
810 else if (isym->st_shndx == SHN_COMMON)
811 tsec = bfd_com_section_ptr;
812 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
813 tsec = bfd_com_section_ptr;
814 else
815 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
817 toff = isym->st_value;
818 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
820 else
822 unsigned long indx;
823 struct elf_link_hash_entry *h;
825 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
826 h = elf_sym_hashes (abfd)[indx];
827 BFD_ASSERT (h != NULL);
829 while (h->root.type == bfd_link_hash_indirect
830 || h->root.type == bfd_link_hash_warning)
831 h = (struct elf_link_hash_entry *) h->root.u.i.link;
833 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
835 /* For branches to dynamic symbols, we're interested instead
836 in a branch to the PLT entry. */
837 if (is_branch && dyn_i && dyn_i->want_plt2)
839 /* Internal branches shouldn't be sent to the PLT.
840 Leave this for now and we'll give an error later. */
841 if (r_type != R_IA64_PCREL21B)
842 continue;
844 tsec = ia64_info->plt_sec;
845 toff = dyn_i->plt2_offset;
846 BFD_ASSERT (irel->r_addend == 0);
849 /* Can't do anything else with dynamic symbols. */
850 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
851 continue;
853 else
855 /* We can't do anthing with undefined symbols. */
856 if (h->root.type == bfd_link_hash_undefined
857 || h->root.type == bfd_link_hash_undefweak)
858 continue;
860 tsec = h->root.u.def.section;
861 toff = h->root.u.def.value;
865 if (tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
866 toff = _bfd_merged_section_offset (abfd, &tsec,
867 elf_section_data (tsec)->sec_info,
868 toff + irel->r_addend,
869 (bfd_vma) 0);
870 else
871 toff += irel->r_addend;
873 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
875 roff = irel->r_offset;
877 if (is_branch)
879 reladdr = (sec->output_section->vma
880 + sec->output_offset
881 + roff) & (bfd_vma) -4;
883 /* If the branch is in range, no need to do anything. */
884 if ((bfd_signed_vma) (symaddr - reladdr) >= -0x1000000
885 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
886 continue;
888 /* If the branch and target are in the same section, you've
889 got one honking big section and we can't help you. You'll
890 get an error message later. */
891 if (tsec == sec)
892 continue;
894 /* Look for an existing fixup to this address. */
895 for (f = fixups; f ; f = f->next)
896 if (f->tsec == tsec && f->toff == toff)
897 break;
899 if (f == NULL)
901 /* Two alternatives: If it's a branch to a PLT entry, we can
902 make a copy of the FULL_PLT entry. Otherwise, we'll have
903 to use a `brl' insn to get where we're going. */
905 size_t size;
907 if (tsec == ia64_info->plt_sec)
908 size = sizeof (plt_full_entry);
909 else
910 size = oor_branch_size;
912 /* Resize the current section to make room for the new branch. */
913 trampoff = (sec->_cooked_size + 15) & (bfd_vma) -16;
914 amt = trampoff + size;
915 contents = (bfd_byte *) bfd_realloc (contents, amt);
916 if (contents == NULL)
917 goto error_return;
918 sec->_cooked_size = amt;
920 if (tsec == ia64_info->plt_sec)
922 memcpy (contents + trampoff, plt_full_entry, size);
924 /* Hijack the old relocation for use as the PLTOFF reloc. */
925 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
926 R_IA64_PLTOFF22);
927 irel->r_offset = trampoff;
929 else
931 if (size == sizeof (oor_ip))
933 memcpy (contents + trampoff, oor_ip, size);
934 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
935 R_IA64_PCREL64I);
936 irel->r_addend -= 16;
937 irel->r_offset = trampoff + 2;
939 else
941 memcpy (contents + trampoff, oor_brl, size);
942 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
943 R_IA64_PCREL60B);
944 irel->r_offset = trampoff + 2;
949 /* Record the fixup so we don't do it again this section. */
950 f = (struct one_fixup *)
951 bfd_malloc ((bfd_size_type) sizeof (*f));
952 f->next = fixups;
953 f->tsec = tsec;
954 f->toff = toff;
955 f->trampoff = trampoff;
956 fixups = f;
958 else
960 /* Nop out the reloc, since we're finalizing things here. */
961 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
964 /* Fix up the existing branch to hit the trampoline. Hope like
965 hell this doesn't overflow too. */
966 if (elfNN_ia64_install_value (abfd, contents + roff,
967 f->trampoff - (roff & (bfd_vma) -4),
968 r_type) != bfd_reloc_ok)
969 goto error_return;
971 changed_contents = TRUE;
972 changed_relocs = TRUE;
974 else
976 /* Fetch the gp. */
977 if (gp == 0)
979 bfd *obfd = sec->output_section->owner;
980 gp = _bfd_get_gp_value (obfd);
981 if (gp == 0)
983 if (!elfNN_ia64_choose_gp (obfd, link_info))
984 goto error_return;
985 gp = _bfd_get_gp_value (obfd);
989 /* If the data is out of range, do nothing. */
990 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
991 ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
992 continue;
994 if (r_type == R_IA64_LTOFF22X)
996 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
997 R_IA64_GPREL22);
998 changed_relocs = TRUE;
999 if (dyn_i->want_gotx)
1001 dyn_i->want_gotx = 0;
1002 changed_got |= !dyn_i->want_got;
1005 else
1007 elfNN_ia64_relax_ldxmov (abfd, contents, roff);
1008 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
1009 changed_contents = TRUE;
1010 changed_relocs = TRUE;
1015 /* ??? If we created fixups, this may push the code segment large
1016 enough that the data segment moves, which will change the GP.
1017 Reset the GP so that we re-calculate next round. We need to
1018 do this at the _beginning_ of the next round; now will not do. */
1020 /* Clean up and go home. */
1021 while (fixups)
1023 struct one_fixup *f = fixups;
1024 fixups = fixups->next;
1025 free (f);
1028 if (isymbuf != NULL
1029 && symtab_hdr->contents != (unsigned char *) isymbuf)
1031 if (! link_info->keep_memory)
1032 free (isymbuf);
1033 else
1035 /* Cache the symbols for elf_link_input_bfd. */
1036 symtab_hdr->contents = (unsigned char *) isymbuf;
1040 if (contents != NULL
1041 && elf_section_data (sec)->this_hdr.contents != contents)
1043 if (!changed_contents && !link_info->keep_memory)
1044 free (contents);
1045 else
1047 /* Cache the section contents for elf_link_input_bfd. */
1048 elf_section_data (sec)->this_hdr.contents = contents;
1052 if (elf_section_data (sec)->relocs != internal_relocs)
1054 if (!changed_relocs)
1055 free (internal_relocs);
1056 else
1057 elf_section_data (sec)->relocs = internal_relocs;
1060 if (changed_got)
1062 struct elfNN_ia64_allocate_data data;
1063 data.info = link_info;
1064 data.ofs = 0;
1065 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
1067 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
1068 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
1069 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
1070 ia64_info->got_sec->_raw_size = data.ofs;
1071 ia64_info->got_sec->_cooked_size = data.ofs;
1073 /* ??? Resize .rela.got too. */
1076 if (link_info->relax_finalizing)
1077 sec->need_finalize_relax = 0;
1079 *again = changed_contents || changed_relocs;
1080 return TRUE;
1082 error_return:
1083 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
1084 free (isymbuf);
1085 if (contents != NULL
1086 && elf_section_data (sec)->this_hdr.contents != contents)
1087 free (contents);
1088 if (internal_relocs != NULL
1089 && elf_section_data (sec)->relocs != internal_relocs)
1090 free (internal_relocs);
1091 return FALSE;
1094 static void
1095 elfNN_ia64_relax_ldxmov (abfd, contents, off)
1096 bfd *abfd;
1097 bfd_byte *contents;
1098 bfd_vma off;
1100 int shift, r1, r3;
1101 bfd_vma dword, insn;
1103 switch ((int)off & 0x3)
1105 case 0: shift = 5; break;
1106 case 1: shift = 14; off += 3; break;
1107 case 2: shift = 23; off += 6; break;
1108 default:
1109 abort ();
1112 dword = bfd_get_64 (abfd, contents + off);
1113 insn = (dword >> shift) & 0x1ffffffffffLL;
1115 r1 = (insn >> 6) & 127;
1116 r3 = (insn >> 20) & 127;
1117 if (r1 == r3)
1118 insn = 0x8000000; /* nop */
1119 else
1120 insn = (insn & 0x7f01fff) | 0x10800000000LL; /* (qp) mov r1 = r3 */
1122 dword &= ~(0x1ffffffffffLL << shift);
1123 dword |= (insn << shift);
1124 bfd_put_64 (abfd, dword, contents + off);
1127 /* Return TRUE if NAME is an unwind table section name. */
1129 static inline bfd_boolean
1130 is_unwind_section_name (abfd, name)
1131 bfd *abfd;
1132 const char *name;
1134 size_t len1, len2, len3;
1136 if (elfNN_ia64_hpux_vec (abfd->xvec)
1137 && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
1138 return FALSE;
1140 len1 = sizeof (ELF_STRING_ia64_unwind) - 1;
1141 len2 = sizeof (ELF_STRING_ia64_unwind_info) - 1;
1142 len3 = sizeof (ELF_STRING_ia64_unwind_once) - 1;
1143 return ((strncmp (name, ELF_STRING_ia64_unwind, len1) == 0
1144 && strncmp (name, ELF_STRING_ia64_unwind_info, len2) != 0)
1145 || strncmp (name, ELF_STRING_ia64_unwind_once, len3) == 0);
1148 /* Handle an IA-64 specific section when reading an object file. This
1149 is called when elfcode.h finds a section with an unknown type. */
1151 static bfd_boolean
1152 elfNN_ia64_section_from_shdr (abfd, hdr, name)
1153 bfd *abfd;
1154 Elf_Internal_Shdr *hdr;
1155 const char *name;
1157 asection *newsect;
1159 /* There ought to be a place to keep ELF backend specific flags, but
1160 at the moment there isn't one. We just keep track of the
1161 sections by their name, instead. Fortunately, the ABI gives
1162 suggested names for all the MIPS specific sections, so we will
1163 probably get away with this. */
1164 switch (hdr->sh_type)
1166 case SHT_IA_64_UNWIND:
1167 case SHT_IA_64_HP_OPT_ANOT:
1168 break;
1170 case SHT_IA_64_EXT:
1171 if (strcmp (name, ELF_STRING_ia64_archext) != 0)
1172 return FALSE;
1173 break;
1175 default:
1176 return FALSE;
1179 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1180 return FALSE;
1181 newsect = hdr->bfd_section;
1183 return TRUE;
1186 /* Convert IA-64 specific section flags to bfd internal section flags. */
1188 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
1189 flag. */
1191 static bfd_boolean
1192 elfNN_ia64_section_flags (flags, hdr)
1193 flagword *flags;
1194 Elf_Internal_Shdr *hdr;
1196 if (hdr->sh_flags & SHF_IA_64_SHORT)
1197 *flags |= SEC_SMALL_DATA;
1199 return TRUE;
1202 /* Set the correct type for an IA-64 ELF section. We do this by the
1203 section name, which is a hack, but ought to work. */
1205 static bfd_boolean
1206 elfNN_ia64_fake_sections (abfd, hdr, sec)
1207 bfd *abfd ATTRIBUTE_UNUSED;
1208 Elf_Internal_Shdr *hdr;
1209 asection *sec;
1211 register const char *name;
1213 name = bfd_get_section_name (abfd, sec);
1215 if (is_unwind_section_name (abfd, name))
1217 /* We don't have the sections numbered at this point, so sh_info
1218 is set later, in elfNN_ia64_final_write_processing. */
1219 hdr->sh_type = SHT_IA_64_UNWIND;
1220 hdr->sh_flags |= SHF_LINK_ORDER;
1222 else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
1223 hdr->sh_type = SHT_IA_64_EXT;
1224 else if (strcmp (name, ".HP.opt_annot") == 0)
1225 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
1226 else if (strcmp (name, ".reloc") == 0)
1227 /* This is an ugly, but unfortunately necessary hack that is
1228 needed when producing EFI binaries on IA-64. It tells
1229 elf.c:elf_fake_sections() not to consider ".reloc" as a section
1230 containing ELF relocation info. We need this hack in order to
1231 be able to generate ELF binaries that can be translated into
1232 EFI applications (which are essentially COFF objects). Those
1233 files contain a COFF ".reloc" section inside an ELFNN object,
1234 which would normally cause BFD to segfault because it would
1235 attempt to interpret this section as containing relocation
1236 entries for section "oc". With this hack enabled, ".reloc"
1237 will be treated as a normal data section, which will avoid the
1238 segfault. However, you won't be able to create an ELFNN binary
1239 with a section named "oc" that needs relocations, but that's
1240 the kind of ugly side-effects you get when detecting section
1241 types based on their names... In practice, this limitation is
1242 unlikely to bite. */
1243 hdr->sh_type = SHT_PROGBITS;
1245 if (sec->flags & SEC_SMALL_DATA)
1246 hdr->sh_flags |= SHF_IA_64_SHORT;
1248 return TRUE;
1251 /* The final processing done just before writing out an IA-64 ELF
1252 object file. */
1254 static void
1255 elfNN_ia64_final_write_processing (abfd, linker)
1256 bfd *abfd;
1257 bfd_boolean linker ATTRIBUTE_UNUSED;
1259 Elf_Internal_Shdr *hdr;
1260 const char *sname;
1261 asection *text_sect, *s;
1262 size_t len;
1264 for (s = abfd->sections; s; s = s->next)
1266 hdr = &elf_section_data (s)->this_hdr;
1267 switch (hdr->sh_type)
1269 case SHT_IA_64_UNWIND:
1270 /* See comments in gas/config/tc-ia64.c:dot_endp on why we
1271 have to do this. */
1272 sname = bfd_get_section_name (abfd, s);
1273 len = sizeof (ELF_STRING_ia64_unwind) - 1;
1274 if (sname && strncmp (sname, ELF_STRING_ia64_unwind, len) == 0)
1276 sname += len;
1278 if (sname[0] == '\0')
1279 /* .IA_64.unwind -> .text */
1280 text_sect = bfd_get_section_by_name (abfd, ".text");
1281 else
1282 /* .IA_64.unwindFOO -> FOO */
1283 text_sect = bfd_get_section_by_name (abfd, sname);
1285 else if (sname
1286 && (len = sizeof (ELF_STRING_ia64_unwind_once) - 1,
1287 strncmp (sname, ELF_STRING_ia64_unwind_once, len)) == 0)
1289 /* .gnu.linkonce.ia64unw.FOO -> .gnu.linkonce.t.FOO */
1290 size_t len2 = sizeof (".gnu.linkonce.t.") - 1;
1291 char *once_name = bfd_malloc (len2 + strlen (sname + len) + 1);
1293 if (once_name != NULL)
1295 memcpy (once_name, ".gnu.linkonce.t.", len2);
1296 strcpy (once_name + len2, sname + len);
1297 text_sect = bfd_get_section_by_name (abfd, once_name);
1298 free (once_name);
1300 else
1301 /* Should only happen if we run out of memory, in
1302 which case we're probably toast anyway. Try to
1303 cope by finding the section the slow way. */
1304 for (text_sect = abfd->sections;
1305 text_sect != NULL;
1306 text_sect = text_sect->next)
1308 if (strncmp (bfd_section_name (abfd, text_sect),
1309 ".gnu.linkonce.t.", len2) == 0
1310 && strcmp (bfd_section_name (abfd, text_sect) + len2,
1311 sname + len) == 0)
1312 break;
1315 else
1316 /* last resort: fall back on .text */
1317 text_sect = bfd_get_section_by_name (abfd, ".text");
1319 if (text_sect)
1321 /* The IA-64 processor-specific ABI requires setting
1322 sh_link to the unwind section, whereas HP-UX requires
1323 sh_info to do so. For maximum compatibility, we'll
1324 set both for now... */
1325 hdr->sh_link = elf_section_data (text_sect)->this_idx;
1326 hdr->sh_info = elf_section_data (text_sect)->this_idx;
1328 break;
1332 if (! elf_flags_init (abfd))
1334 unsigned long flags = 0;
1336 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1337 flags |= EF_IA_64_BE;
1338 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1339 flags |= EF_IA_64_ABI64;
1341 elf_elfheader(abfd)->e_flags = flags;
1342 elf_flags_init (abfd) = TRUE;
1346 /* Hook called by the linker routine which adds symbols from an object
1347 file. We use it to put .comm items in .sbss, and not .bss. */
1349 static bfd_boolean
1350 elfNN_ia64_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1351 bfd *abfd;
1352 struct bfd_link_info *info;
1353 const Elf_Internal_Sym *sym;
1354 const char **namep ATTRIBUTE_UNUSED;
1355 flagword *flagsp ATTRIBUTE_UNUSED;
1356 asection **secp;
1357 bfd_vma *valp;
1359 if (sym->st_shndx == SHN_COMMON
1360 && !info->relocatable
1361 && sym->st_size <= elf_gp_size (abfd))
1363 /* Common symbols less than or equal to -G nn bytes are
1364 automatically put into .sbss. */
1366 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1368 if (scomm == NULL)
1370 scomm = bfd_make_section (abfd, ".scommon");
1371 if (scomm == NULL
1372 || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC
1373 | SEC_IS_COMMON
1374 | SEC_LINKER_CREATED)))
1375 return FALSE;
1378 *secp = scomm;
1379 *valp = sym->st_size;
1382 return TRUE;
1385 /* Return the number of additional phdrs we will need. */
1387 static int
1388 elfNN_ia64_additional_program_headers (abfd)
1389 bfd *abfd;
1391 asection *s;
1392 int ret = 0;
1394 /* See if we need a PT_IA_64_ARCHEXT segment. */
1395 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1396 if (s && (s->flags & SEC_LOAD))
1397 ++ret;
1399 /* Count how many PT_IA_64_UNWIND segments we need. */
1400 for (s = abfd->sections; s; s = s->next)
1401 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1402 ++ret;
1404 return ret;
1407 static bfd_boolean
1408 elfNN_ia64_modify_segment_map (abfd)
1409 bfd *abfd;
1411 struct elf_segment_map *m, **pm;
1412 Elf_Internal_Shdr *hdr;
1413 asection *s;
1415 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1416 all PT_LOAD segments. */
1417 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1418 if (s && (s->flags & SEC_LOAD))
1420 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1421 if (m->p_type == PT_IA_64_ARCHEXT)
1422 break;
1423 if (m == NULL)
1425 m = ((struct elf_segment_map *)
1426 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1427 if (m == NULL)
1428 return FALSE;
1430 m->p_type = PT_IA_64_ARCHEXT;
1431 m->count = 1;
1432 m->sections[0] = s;
1434 /* We want to put it after the PHDR and INTERP segments. */
1435 pm = &elf_tdata (abfd)->segment_map;
1436 while (*pm != NULL
1437 && ((*pm)->p_type == PT_PHDR
1438 || (*pm)->p_type == PT_INTERP))
1439 pm = &(*pm)->next;
1441 m->next = *pm;
1442 *pm = m;
1446 /* Install PT_IA_64_UNWIND segments, if needed. */
1447 for (s = abfd->sections; s; s = s->next)
1449 hdr = &elf_section_data (s)->this_hdr;
1450 if (hdr->sh_type != SHT_IA_64_UNWIND)
1451 continue;
1453 if (s && (s->flags & SEC_LOAD))
1455 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1456 if (m->p_type == PT_IA_64_UNWIND)
1458 int i;
1460 /* Look through all sections in the unwind segment
1461 for a match since there may be multiple sections
1462 to a segment. */
1463 for (i = m->count - 1; i >= 0; --i)
1464 if (m->sections[i] == s)
1465 break;
1467 if (i >= 0)
1468 break;
1471 if (m == NULL)
1473 m = ((struct elf_segment_map *)
1474 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1475 if (m == NULL)
1476 return FALSE;
1478 m->p_type = PT_IA_64_UNWIND;
1479 m->count = 1;
1480 m->sections[0] = s;
1481 m->next = NULL;
1483 /* We want to put it last. */
1484 pm = &elf_tdata (abfd)->segment_map;
1485 while (*pm != NULL)
1486 pm = &(*pm)->next;
1487 *pm = m;
1492 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1493 the input sections for each output section in the segment and testing
1494 for SHF_IA_64_NORECOV on each. */
1495 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1496 if (m->p_type == PT_LOAD)
1498 int i;
1499 for (i = m->count - 1; i >= 0; --i)
1501 struct bfd_link_order *order = m->sections[i]->link_order_head;
1502 while (order)
1504 if (order->type == bfd_indirect_link_order)
1506 asection *is = order->u.indirect.section;
1507 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1508 if (flags & SHF_IA_64_NORECOV)
1510 m->p_flags |= PF_IA_64_NORECOV;
1511 goto found;
1514 order = order->next;
1517 found:;
1520 return TRUE;
1523 /* According to the Tahoe assembler spec, all labels starting with a
1524 '.' are local. */
1526 static bfd_boolean
1527 elfNN_ia64_is_local_label_name (abfd, name)
1528 bfd *abfd ATTRIBUTE_UNUSED;
1529 const char *name;
1531 return name[0] == '.';
1534 /* Should we do dynamic things to this symbol? */
1536 static bfd_boolean
1537 elfNN_ia64_dynamic_symbol_p (h, info, r_type)
1538 struct elf_link_hash_entry *h;
1539 struct bfd_link_info *info;
1540 int r_type;
1542 bfd_boolean ignore_protected
1543 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1544 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1546 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1549 static struct bfd_hash_entry*
1550 elfNN_ia64_new_elf_hash_entry (entry, table, string)
1551 struct bfd_hash_entry *entry;
1552 struct bfd_hash_table *table;
1553 const char *string;
1555 struct elfNN_ia64_link_hash_entry *ret;
1556 ret = (struct elfNN_ia64_link_hash_entry *) entry;
1558 /* Allocate the structure if it has not already been allocated by a
1559 subclass. */
1560 if (!ret)
1561 ret = bfd_hash_allocate (table, sizeof (*ret));
1563 if (!ret)
1564 return 0;
1566 /* Initialize our local data. All zeros, and definitely easier
1567 than setting a handful of bit fields. */
1568 memset (ret, 0, sizeof (*ret));
1570 /* Call the allocation method of the superclass. */
1571 ret = ((struct elfNN_ia64_link_hash_entry *)
1572 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1573 table, string));
1575 return (struct bfd_hash_entry *) ret;
1578 static void
1579 elfNN_ia64_hash_copy_indirect (bed, xdir, xind)
1580 const struct elf_backend_data *bed ATTRIBUTE_UNUSED;
1581 struct elf_link_hash_entry *xdir, *xind;
1583 struct elfNN_ia64_link_hash_entry *dir, *ind;
1585 dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1586 ind = (struct elfNN_ia64_link_hash_entry *) xind;
1588 /* Copy down any references that we may have already seen to the
1589 symbol which just became indirect. */
1591 dir->root.elf_link_hash_flags |=
1592 (ind->root.elf_link_hash_flags
1593 & (ELF_LINK_HASH_REF_DYNAMIC
1594 | ELF_LINK_HASH_REF_REGULAR
1595 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
1596 | ELF_LINK_HASH_NEEDS_PLT));
1598 if (ind->root.root.type != bfd_link_hash_indirect)
1599 return;
1601 /* Copy over the got and plt data. This would have been done
1602 by check_relocs. */
1604 if (dir->info == NULL)
1606 struct elfNN_ia64_dyn_sym_info *dyn_i;
1608 dir->info = dyn_i = ind->info;
1609 ind->info = NULL;
1611 /* Fix up the dyn_sym_info pointers to the global symbol. */
1612 for (; dyn_i; dyn_i = dyn_i->next)
1613 dyn_i->h = &dir->root;
1615 BFD_ASSERT (ind->info == NULL);
1617 /* Copy over the dynindx. */
1619 if (dir->root.dynindx == -1)
1621 dir->root.dynindx = ind->root.dynindx;
1622 dir->root.dynstr_index = ind->root.dynstr_index;
1623 ind->root.dynindx = -1;
1624 ind->root.dynstr_index = 0;
1626 BFD_ASSERT (ind->root.dynindx == -1);
1629 static void
1630 elfNN_ia64_hash_hide_symbol (info, xh, force_local)
1631 struct bfd_link_info *info;
1632 struct elf_link_hash_entry *xh;
1633 bfd_boolean force_local;
1635 struct elfNN_ia64_link_hash_entry *h;
1636 struct elfNN_ia64_dyn_sym_info *dyn_i;
1638 h = (struct elfNN_ia64_link_hash_entry *)xh;
1640 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1642 for (dyn_i = h->info; dyn_i; dyn_i = dyn_i->next)
1644 dyn_i->want_plt2 = 0;
1645 dyn_i->want_plt = 0;
1649 /* Compute a hash of a local hash entry. */
1651 static hashval_t
1652 elfNN_ia64_local_htab_hash (ptr)
1653 const void *ptr;
1655 struct elfNN_ia64_local_hash_entry *entry
1656 = (struct elfNN_ia64_local_hash_entry *) ptr;
1658 return (((entry->id & 0xff) << 24) | ((entry->id & 0xff00) << 8))
1659 ^ entry->r_sym ^ (entry->id >> 16);
1662 /* Compare local hash entries. */
1664 static int
1665 elfNN_ia64_local_htab_eq (ptr1, ptr2)
1666 const void *ptr1, *ptr2;
1668 struct elfNN_ia64_local_hash_entry *entry1
1669 = (struct elfNN_ia64_local_hash_entry *) ptr1;
1670 struct elfNN_ia64_local_hash_entry *entry2
1671 = (struct elfNN_ia64_local_hash_entry *) ptr2;
1673 return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1676 /* Create the derived linker hash table. The IA-64 ELF port uses this
1677 derived hash table to keep information specific to the IA-64 ElF
1678 linker (without using static variables). */
1680 static struct bfd_link_hash_table*
1681 elfNN_ia64_hash_table_create (abfd)
1682 bfd *abfd;
1684 struct elfNN_ia64_link_hash_table *ret;
1686 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1687 if (!ret)
1688 return 0;
1690 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1691 elfNN_ia64_new_elf_hash_entry))
1693 free (ret);
1694 return 0;
1697 ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1698 elfNN_ia64_local_htab_eq, NULL);
1699 ret->loc_hash_memory = objalloc_create ();
1700 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1702 free (ret);
1703 return 0;
1706 return &ret->root.root;
1709 /* Destroy IA-64 linker hash table. */
1711 static void
1712 elfNN_ia64_hash_table_free (hash)
1713 struct bfd_link_hash_table *hash;
1715 struct elfNN_ia64_link_hash_table *ia64_info
1716 = (struct elfNN_ia64_link_hash_table *) hash;
1717 if (ia64_info->loc_hash_table)
1718 htab_delete (ia64_info->loc_hash_table);
1719 if (ia64_info->loc_hash_memory)
1720 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1721 _bfd_generic_link_hash_table_free (hash);
1724 /* Traverse both local and global hash tables. */
1726 struct elfNN_ia64_dyn_sym_traverse_data
1728 bfd_boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
1729 PTR data;
1732 static bfd_boolean
1733 elfNN_ia64_global_dyn_sym_thunk (xentry, xdata)
1734 struct bfd_hash_entry *xentry;
1735 PTR xdata;
1737 struct elfNN_ia64_link_hash_entry *entry
1738 = (struct elfNN_ia64_link_hash_entry *) xentry;
1739 struct elfNN_ia64_dyn_sym_traverse_data *data
1740 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1741 struct elfNN_ia64_dyn_sym_info *dyn_i;
1743 if (entry->root.root.type == bfd_link_hash_warning)
1744 entry = (struct elfNN_ia64_link_hash_entry *) entry->root.root.u.i.link;
1746 for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
1747 if (! (*data->func) (dyn_i, data->data))
1748 return FALSE;
1749 return TRUE;
1752 static bfd_boolean
1753 elfNN_ia64_local_dyn_sym_thunk (slot, xdata)
1754 void **slot;
1755 PTR xdata;
1757 struct elfNN_ia64_local_hash_entry *entry
1758 = (struct elfNN_ia64_local_hash_entry *) *slot;
1759 struct elfNN_ia64_dyn_sym_traverse_data *data
1760 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1761 struct elfNN_ia64_dyn_sym_info *dyn_i;
1763 for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
1764 if (! (*data->func) (dyn_i, data->data))
1765 return 0;
1766 return 1;
1769 static void
1770 elfNN_ia64_dyn_sym_traverse (ia64_info, func, data)
1771 struct elfNN_ia64_link_hash_table *ia64_info;
1772 bfd_boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
1773 PTR data;
1775 struct elfNN_ia64_dyn_sym_traverse_data xdata;
1777 xdata.func = func;
1778 xdata.data = data;
1780 elf_link_hash_traverse (&ia64_info->root,
1781 elfNN_ia64_global_dyn_sym_thunk, &xdata);
1782 htab_traverse (ia64_info->loc_hash_table,
1783 elfNN_ia64_local_dyn_sym_thunk, &xdata);
1786 static bfd_boolean
1787 elfNN_ia64_create_dynamic_sections (abfd, info)
1788 bfd *abfd;
1789 struct bfd_link_info *info;
1791 struct elfNN_ia64_link_hash_table *ia64_info;
1792 asection *s;
1794 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1795 return FALSE;
1797 ia64_info = elfNN_ia64_hash_table (info);
1799 ia64_info->plt_sec = bfd_get_section_by_name (abfd, ".plt");
1800 ia64_info->got_sec = bfd_get_section_by_name (abfd, ".got");
1803 flagword flags = bfd_get_section_flags (abfd, ia64_info->got_sec);
1804 bfd_set_section_flags (abfd, ia64_info->got_sec, SEC_SMALL_DATA | flags);
1805 /* The .got section is always aligned at 8 bytes. */
1806 bfd_set_section_alignment (abfd, ia64_info->got_sec, 3);
1809 if (!get_pltoff (abfd, info, ia64_info))
1810 return FALSE;
1812 s = bfd_make_section(abfd, ".rela.IA_64.pltoff");
1813 if (s == NULL
1814 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1815 | SEC_HAS_CONTENTS
1816 | SEC_IN_MEMORY
1817 | SEC_LINKER_CREATED
1818 | SEC_READONLY))
1819 || !bfd_set_section_alignment (abfd, s, 3))
1820 return FALSE;
1821 ia64_info->rel_pltoff_sec = s;
1823 s = bfd_make_section(abfd, ".rela.got");
1824 if (s == NULL
1825 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1826 | SEC_HAS_CONTENTS
1827 | SEC_IN_MEMORY
1828 | SEC_LINKER_CREATED
1829 | SEC_READONLY))
1830 || !bfd_set_section_alignment (abfd, s, 3))
1831 return FALSE;
1832 ia64_info->rel_got_sec = s;
1834 return TRUE;
1837 /* Find and/or create a hash entry for local symbol. */
1838 static struct elfNN_ia64_local_hash_entry *
1839 get_local_sym_hash (ia64_info, abfd, rel, create)
1840 struct elfNN_ia64_link_hash_table *ia64_info;
1841 bfd *abfd;
1842 const Elf_Internal_Rela *rel;
1843 bfd_boolean create;
1845 struct elfNN_ia64_local_hash_entry e, *ret;
1846 asection *sec = abfd->sections;
1847 hashval_t h = (((sec->id & 0xff) << 24) | ((sec->id & 0xff00) << 8))
1848 ^ ELFNN_R_SYM (rel->r_info) ^ (sec->id >> 16);
1849 void **slot;
1851 e.id = sec->id;
1852 e.r_sym = ELFNN_R_SYM (rel->r_info);
1853 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
1854 create ? INSERT : NO_INSERT);
1856 if (!slot)
1857 return NULL;
1859 if (*slot)
1860 return (struct elfNN_ia64_local_hash_entry *) *slot;
1862 ret = (struct elfNN_ia64_local_hash_entry *)
1863 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
1864 sizeof (struct elfNN_ia64_local_hash_entry));
1865 if (ret)
1867 memset (ret, 0, sizeof (*ret));
1868 ret->id = sec->id;
1869 ret->r_sym = ELFNN_R_SYM (rel->r_info);
1870 *slot = ret;
1872 return ret;
1875 /* Find and/or create a descriptor for dynamic symbol info. This will
1876 vary based on global or local symbol, and the addend to the reloc. */
1878 static struct elfNN_ia64_dyn_sym_info *
1879 get_dyn_sym_info (ia64_info, h, abfd, rel, create)
1880 struct elfNN_ia64_link_hash_table *ia64_info;
1881 struct elf_link_hash_entry *h;
1882 bfd *abfd;
1883 const Elf_Internal_Rela *rel;
1884 bfd_boolean create;
1886 struct elfNN_ia64_dyn_sym_info **pp;
1887 struct elfNN_ia64_dyn_sym_info *dyn_i;
1888 bfd_vma addend = rel ? rel->r_addend : 0;
1890 if (h)
1891 pp = &((struct elfNN_ia64_link_hash_entry *)h)->info;
1892 else
1894 struct elfNN_ia64_local_hash_entry *loc_h;
1896 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1897 if (!loc_h)
1899 BFD_ASSERT (!create);
1900 return NULL;
1903 pp = &loc_h->info;
1906 for (dyn_i = *pp; dyn_i && dyn_i->addend != addend; dyn_i = *pp)
1907 pp = &dyn_i->next;
1909 if (dyn_i == NULL && create)
1911 dyn_i = ((struct elfNN_ia64_dyn_sym_info *)
1912 bfd_zalloc (abfd, (bfd_size_type) sizeof *dyn_i));
1913 *pp = dyn_i;
1914 dyn_i->addend = addend;
1917 return dyn_i;
1920 static asection *
1921 get_got (abfd, info, ia64_info)
1922 bfd *abfd;
1923 struct bfd_link_info *info;
1924 struct elfNN_ia64_link_hash_table *ia64_info;
1926 asection *got;
1927 bfd *dynobj;
1929 got = ia64_info->got_sec;
1930 if (!got)
1932 flagword flags;
1934 dynobj = ia64_info->root.dynobj;
1935 if (!dynobj)
1936 ia64_info->root.dynobj = dynobj = abfd;
1937 if (!_bfd_elf_create_got_section (dynobj, info))
1938 return 0;
1940 got = bfd_get_section_by_name (dynobj, ".got");
1941 BFD_ASSERT (got);
1942 ia64_info->got_sec = got;
1944 /* The .got section is always aligned at 8 bytes. */
1945 if (!bfd_set_section_alignment (abfd, got, 3))
1946 return 0;
1948 flags = bfd_get_section_flags (abfd, got);
1949 bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags);
1952 return got;
1955 /* Create function descriptor section (.opd). This section is called .opd
1956 because it contains "official prodecure descriptors". The "official"
1957 refers to the fact that these descriptors are used when taking the address
1958 of a procedure, thus ensuring a unique address for each procedure. */
1960 static asection *
1961 get_fptr (abfd, info, ia64_info)
1962 bfd *abfd;
1963 struct bfd_link_info *info;
1964 struct elfNN_ia64_link_hash_table *ia64_info;
1966 asection *fptr;
1967 bfd *dynobj;
1969 fptr = ia64_info->fptr_sec;
1970 if (!fptr)
1972 dynobj = ia64_info->root.dynobj;
1973 if (!dynobj)
1974 ia64_info->root.dynobj = dynobj = abfd;
1976 fptr = bfd_make_section (dynobj, ".opd");
1977 if (!fptr
1978 || !bfd_set_section_flags (dynobj, fptr,
1979 (SEC_ALLOC
1980 | SEC_LOAD
1981 | SEC_HAS_CONTENTS
1982 | SEC_IN_MEMORY
1983 | (info->pie ? 0 : SEC_READONLY)
1984 | SEC_LINKER_CREATED))
1985 || !bfd_set_section_alignment (abfd, fptr, 4))
1987 BFD_ASSERT (0);
1988 return NULL;
1991 ia64_info->fptr_sec = fptr;
1993 if (info->pie)
1995 asection *fptr_rel;
1996 fptr_rel = bfd_make_section(abfd, ".rela.opd");
1997 if (fptr_rel == NULL
1998 || !bfd_set_section_flags (abfd, fptr_rel,
1999 (SEC_ALLOC | SEC_LOAD
2000 | SEC_HAS_CONTENTS
2001 | SEC_IN_MEMORY
2002 | SEC_LINKER_CREATED
2003 | SEC_READONLY))
2004 || !bfd_set_section_alignment (abfd, fptr_rel, 3))
2006 BFD_ASSERT (0);
2007 return NULL;
2010 ia64_info->rel_fptr_sec = fptr_rel;
2014 return fptr;
2017 static asection *
2018 get_pltoff (abfd, info, ia64_info)
2019 bfd *abfd;
2020 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2021 struct elfNN_ia64_link_hash_table *ia64_info;
2023 asection *pltoff;
2024 bfd *dynobj;
2026 pltoff = ia64_info->pltoff_sec;
2027 if (!pltoff)
2029 dynobj = ia64_info->root.dynobj;
2030 if (!dynobj)
2031 ia64_info->root.dynobj = dynobj = abfd;
2033 pltoff = bfd_make_section (dynobj, ELF_STRING_ia64_pltoff);
2034 if (!pltoff
2035 || !bfd_set_section_flags (dynobj, pltoff,
2036 (SEC_ALLOC
2037 | SEC_LOAD
2038 | SEC_HAS_CONTENTS
2039 | SEC_IN_MEMORY
2040 | SEC_SMALL_DATA
2041 | SEC_LINKER_CREATED))
2042 || !bfd_set_section_alignment (abfd, pltoff, 4))
2044 BFD_ASSERT (0);
2045 return NULL;
2048 ia64_info->pltoff_sec = pltoff;
2051 return pltoff;
2054 static asection *
2055 get_reloc_section (abfd, ia64_info, sec, create)
2056 bfd *abfd;
2057 struct elfNN_ia64_link_hash_table *ia64_info;
2058 asection *sec;
2059 bfd_boolean create;
2061 const char *srel_name;
2062 asection *srel;
2063 bfd *dynobj;
2065 srel_name = (bfd_elf_string_from_elf_section
2066 (abfd, elf_elfheader(abfd)->e_shstrndx,
2067 elf_section_data(sec)->rel_hdr.sh_name));
2068 if (srel_name == NULL)
2069 return NULL;
2071 BFD_ASSERT ((strncmp (srel_name, ".rela", 5) == 0
2072 && strcmp (bfd_get_section_name (abfd, sec),
2073 srel_name+5) == 0)
2074 || (strncmp (srel_name, ".rel", 4) == 0
2075 && strcmp (bfd_get_section_name (abfd, sec),
2076 srel_name+4) == 0));
2078 dynobj = ia64_info->root.dynobj;
2079 if (!dynobj)
2080 ia64_info->root.dynobj = dynobj = abfd;
2082 srel = bfd_get_section_by_name (dynobj, srel_name);
2083 if (srel == NULL && create)
2085 srel = bfd_make_section (dynobj, srel_name);
2086 if (srel == NULL
2087 || !bfd_set_section_flags (dynobj, srel,
2088 (SEC_ALLOC
2089 | SEC_LOAD
2090 | SEC_HAS_CONTENTS
2091 | SEC_IN_MEMORY
2092 | SEC_LINKER_CREATED
2093 | SEC_READONLY))
2094 || !bfd_set_section_alignment (dynobj, srel, 3))
2095 return NULL;
2098 if (sec->flags & SEC_READONLY)
2099 ia64_info->reltext = 1;
2101 return srel;
2104 static bfd_boolean
2105 count_dyn_reloc (abfd, dyn_i, srel, type)
2106 bfd *abfd;
2107 struct elfNN_ia64_dyn_sym_info *dyn_i;
2108 asection *srel;
2109 int type;
2111 struct elfNN_ia64_dyn_reloc_entry *rent;
2113 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2114 if (rent->srel == srel && rent->type == type)
2115 break;
2117 if (!rent)
2119 rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2120 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2121 if (!rent)
2122 return FALSE;
2124 rent->next = dyn_i->reloc_entries;
2125 rent->srel = srel;
2126 rent->type = type;
2127 rent->count = 0;
2128 dyn_i->reloc_entries = rent;
2130 rent->count++;
2132 return TRUE;
2135 static bfd_boolean
2136 elfNN_ia64_check_relocs (abfd, info, sec, relocs)
2137 bfd *abfd;
2138 struct bfd_link_info *info;
2139 asection *sec;
2140 const Elf_Internal_Rela *relocs;
2142 struct elfNN_ia64_link_hash_table *ia64_info;
2143 const Elf_Internal_Rela *relend;
2144 Elf_Internal_Shdr *symtab_hdr;
2145 const Elf_Internal_Rela *rel;
2146 asection *got, *fptr, *srel;
2148 if (info->relocatable)
2149 return TRUE;
2151 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2152 ia64_info = elfNN_ia64_hash_table (info);
2154 got = fptr = srel = NULL;
2156 relend = relocs + sec->reloc_count;
2157 for (rel = relocs; rel < relend; ++rel)
2159 enum {
2160 NEED_GOT = 1,
2161 NEED_GOTX = 2,
2162 NEED_FPTR = 4,
2163 NEED_PLTOFF = 8,
2164 NEED_MIN_PLT = 16,
2165 NEED_FULL_PLT = 32,
2166 NEED_DYNREL = 64,
2167 NEED_LTOFF_FPTR = 128,
2168 NEED_TPREL = 256,
2169 NEED_DTPMOD = 512,
2170 NEED_DTPREL = 1024
2173 struct elf_link_hash_entry *h = NULL;
2174 unsigned long r_symndx = ELFNN_R_SYM (rel->r_info);
2175 struct elfNN_ia64_dyn_sym_info *dyn_i;
2176 int need_entry;
2177 bfd_boolean maybe_dynamic;
2178 int dynrel_type = R_IA64_NONE;
2180 if (r_symndx >= symtab_hdr->sh_info)
2182 /* We're dealing with a global symbol -- find its hash entry
2183 and mark it as being referenced. */
2184 long indx = r_symndx - symtab_hdr->sh_info;
2185 h = elf_sym_hashes (abfd)[indx];
2186 while (h->root.type == bfd_link_hash_indirect
2187 || h->root.type == bfd_link_hash_warning)
2188 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2190 h->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
2193 /* We can only get preliminary data on whether a symbol is
2194 locally or externally defined, as not all of the input files
2195 have yet been processed. Do something with what we know, as
2196 this may help reduce memory usage and processing time later. */
2197 maybe_dynamic = FALSE;
2198 if (h && ((!info->executable
2199 && (!info->symbolic || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2200 || ! (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
2201 || h->root.type == bfd_link_hash_defweak))
2202 maybe_dynamic = TRUE;
2204 need_entry = 0;
2205 switch (ELFNN_R_TYPE (rel->r_info))
2207 case R_IA64_TPREL64MSB:
2208 case R_IA64_TPREL64LSB:
2209 if (info->shared || maybe_dynamic)
2210 need_entry = NEED_DYNREL;
2211 dynrel_type = R_IA64_TPREL64LSB;
2212 if (info->shared)
2213 info->flags |= DF_STATIC_TLS;
2214 break;
2216 case R_IA64_LTOFF_TPREL22:
2217 need_entry = NEED_TPREL;
2218 if (info->shared)
2219 info->flags |= DF_STATIC_TLS;
2220 break;
2222 case R_IA64_DTPREL64MSB:
2223 case R_IA64_DTPREL64LSB:
2224 if (info->shared || maybe_dynamic)
2225 need_entry = NEED_DYNREL;
2226 dynrel_type = R_IA64_DTPREL64LSB;
2227 break;
2229 case R_IA64_LTOFF_DTPREL22:
2230 need_entry = NEED_DTPREL;
2231 break;
2233 case R_IA64_DTPMOD64MSB:
2234 case R_IA64_DTPMOD64LSB:
2235 if (info->shared || maybe_dynamic)
2236 need_entry = NEED_DYNREL;
2237 dynrel_type = R_IA64_DTPMOD64LSB;
2238 break;
2240 case R_IA64_LTOFF_DTPMOD22:
2241 need_entry = NEED_DTPMOD;
2242 break;
2244 case R_IA64_LTOFF_FPTR22:
2245 case R_IA64_LTOFF_FPTR64I:
2246 case R_IA64_LTOFF_FPTR32MSB:
2247 case R_IA64_LTOFF_FPTR32LSB:
2248 case R_IA64_LTOFF_FPTR64MSB:
2249 case R_IA64_LTOFF_FPTR64LSB:
2250 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2251 break;
2253 case R_IA64_FPTR64I:
2254 case R_IA64_FPTR32MSB:
2255 case R_IA64_FPTR32LSB:
2256 case R_IA64_FPTR64MSB:
2257 case R_IA64_FPTR64LSB:
2258 if (info->shared || h)
2259 need_entry = NEED_FPTR | NEED_DYNREL;
2260 else
2261 need_entry = NEED_FPTR;
2262 dynrel_type = R_IA64_FPTR64LSB;
2263 break;
2265 case R_IA64_LTOFF22:
2266 case R_IA64_LTOFF64I:
2267 need_entry = NEED_GOT;
2268 break;
2270 case R_IA64_LTOFF22X:
2271 need_entry = NEED_GOTX;
2272 break;
2274 case R_IA64_PLTOFF22:
2275 case R_IA64_PLTOFF64I:
2276 case R_IA64_PLTOFF64MSB:
2277 case R_IA64_PLTOFF64LSB:
2278 need_entry = NEED_PLTOFF;
2279 if (h)
2281 if (maybe_dynamic)
2282 need_entry |= NEED_MIN_PLT;
2284 else
2286 (*info->callbacks->warning)
2287 (info, _("@pltoff reloc against local symbol"), 0,
2288 abfd, 0, (bfd_vma) 0);
2290 break;
2292 case R_IA64_PCREL21B:
2293 case R_IA64_PCREL60B:
2294 /* Depending on where this symbol is defined, we may or may not
2295 need a full plt entry. Only skip if we know we'll not need
2296 the entry -- static or symbolic, and the symbol definition
2297 has already been seen. */
2298 if (maybe_dynamic && rel->r_addend == 0)
2299 need_entry = NEED_FULL_PLT;
2300 break;
2302 case R_IA64_IMM14:
2303 case R_IA64_IMM22:
2304 case R_IA64_IMM64:
2305 case R_IA64_DIR32MSB:
2306 case R_IA64_DIR32LSB:
2307 case R_IA64_DIR64MSB:
2308 case R_IA64_DIR64LSB:
2309 /* Shared objects will always need at least a REL relocation. */
2310 if (info->shared || maybe_dynamic)
2311 need_entry = NEED_DYNREL;
2312 dynrel_type = R_IA64_DIR64LSB;
2313 break;
2315 case R_IA64_IPLTMSB:
2316 case R_IA64_IPLTLSB:
2317 /* Shared objects will always need at least a REL relocation. */
2318 if (info->shared || maybe_dynamic)
2319 need_entry = NEED_DYNREL;
2320 dynrel_type = R_IA64_IPLTLSB;
2321 break;
2323 case R_IA64_PCREL22:
2324 case R_IA64_PCREL64I:
2325 case R_IA64_PCREL32MSB:
2326 case R_IA64_PCREL32LSB:
2327 case R_IA64_PCREL64MSB:
2328 case R_IA64_PCREL64LSB:
2329 if (maybe_dynamic)
2330 need_entry = NEED_DYNREL;
2331 dynrel_type = R_IA64_PCREL64LSB;
2332 break;
2335 if (!need_entry)
2336 continue;
2338 if ((need_entry & NEED_FPTR) != 0
2339 && rel->r_addend)
2341 (*info->callbacks->warning)
2342 (info, _("non-zero addend in @fptr reloc"), 0,
2343 abfd, 0, (bfd_vma) 0);
2346 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE);
2348 /* Record whether or not this is a local symbol. */
2349 dyn_i->h = h;
2351 /* Create what's needed. */
2352 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2353 | NEED_DTPMOD | NEED_DTPREL))
2355 if (!got)
2357 got = get_got (abfd, info, ia64_info);
2358 if (!got)
2359 return FALSE;
2361 if (need_entry & NEED_GOT)
2362 dyn_i->want_got = 1;
2363 if (need_entry & NEED_GOTX)
2364 dyn_i->want_gotx = 1;
2365 if (need_entry & NEED_TPREL)
2366 dyn_i->want_tprel = 1;
2367 if (need_entry & NEED_DTPMOD)
2368 dyn_i->want_dtpmod = 1;
2369 if (need_entry & NEED_DTPREL)
2370 dyn_i->want_dtprel = 1;
2372 if (need_entry & NEED_FPTR)
2374 if (!fptr)
2376 fptr = get_fptr (abfd, info, ia64_info);
2377 if (!fptr)
2378 return FALSE;
2381 /* FPTRs for shared libraries are allocated by the dynamic
2382 linker. Make sure this local symbol will appear in the
2383 dynamic symbol table. */
2384 if (!h && info->shared)
2386 if (! (_bfd_elfNN_link_record_local_dynamic_symbol
2387 (info, abfd, (long) r_symndx)))
2388 return FALSE;
2391 dyn_i->want_fptr = 1;
2393 if (need_entry & NEED_LTOFF_FPTR)
2394 dyn_i->want_ltoff_fptr = 1;
2395 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2397 if (!ia64_info->root.dynobj)
2398 ia64_info->root.dynobj = abfd;
2399 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2400 dyn_i->want_plt = 1;
2402 if (need_entry & NEED_FULL_PLT)
2403 dyn_i->want_plt2 = 1;
2404 if (need_entry & NEED_PLTOFF)
2405 dyn_i->want_pltoff = 1;
2406 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2408 if (!srel)
2410 srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2411 if (!srel)
2412 return FALSE;
2414 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type))
2415 return FALSE;
2419 return TRUE;
2422 /* For cleanliness, and potentially faster dynamic loading, allocate
2423 external GOT entries first. */
2425 static bfd_boolean
2426 allocate_global_data_got (dyn_i, data)
2427 struct elfNN_ia64_dyn_sym_info *dyn_i;
2428 PTR data;
2430 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2432 if ((dyn_i->want_got || dyn_i->want_gotx)
2433 && ! dyn_i->want_fptr
2434 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2436 dyn_i->got_offset = x->ofs;
2437 x->ofs += 8;
2439 if (dyn_i->want_tprel)
2441 dyn_i->tprel_offset = x->ofs;
2442 x->ofs += 8;
2444 if (dyn_i->want_dtpmod)
2446 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2448 dyn_i->dtpmod_offset = x->ofs;
2449 x->ofs += 8;
2451 else
2453 struct elfNN_ia64_link_hash_table *ia64_info;
2455 ia64_info = elfNN_ia64_hash_table (x->info);
2456 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2458 ia64_info->self_dtpmod_offset = x->ofs;
2459 x->ofs += 8;
2461 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2464 if (dyn_i->want_dtprel)
2466 dyn_i->dtprel_offset = x->ofs;
2467 x->ofs += 8;
2469 return TRUE;
2472 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2474 static bfd_boolean
2475 allocate_global_fptr_got (dyn_i, data)
2476 struct elfNN_ia64_dyn_sym_info *dyn_i;
2477 PTR data;
2479 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2481 if (dyn_i->want_got
2482 && dyn_i->want_fptr
2483 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTR64LSB))
2485 dyn_i->got_offset = x->ofs;
2486 x->ofs += 8;
2488 return TRUE;
2491 /* Lastly, allocate all the GOT entries for local data. */
2493 static bfd_boolean
2494 allocate_local_got (dyn_i, data)
2495 struct elfNN_ia64_dyn_sym_info *dyn_i;
2496 PTR data;
2498 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2500 if ((dyn_i->want_got || dyn_i->want_gotx)
2501 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2503 dyn_i->got_offset = x->ofs;
2504 x->ofs += 8;
2506 return TRUE;
2509 /* Search for the index of a global symbol in it's defining object file. */
2511 static long
2512 global_sym_index (h)
2513 struct elf_link_hash_entry *h;
2515 struct elf_link_hash_entry **p;
2516 bfd *obj;
2518 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2519 || h->root.type == bfd_link_hash_defweak);
2521 obj = h->root.u.def.section->owner;
2522 for (p = elf_sym_hashes (obj); *p != h; ++p)
2523 continue;
2525 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2528 /* Allocate function descriptors. We can do these for every function
2529 in a main executable that is not exported. */
2531 static bfd_boolean
2532 allocate_fptr (dyn_i, data)
2533 struct elfNN_ia64_dyn_sym_info *dyn_i;
2534 PTR data;
2536 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2538 if (dyn_i->want_fptr)
2540 struct elf_link_hash_entry *h = dyn_i->h;
2542 if (h)
2543 while (h->root.type == bfd_link_hash_indirect
2544 || h->root.type == bfd_link_hash_warning)
2545 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2547 if (!x->info->executable
2548 && (!h
2549 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2550 || h->root.type != bfd_link_hash_undefweak))
2552 if (h && h->dynindx == -1)
2554 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2555 || (h->root.type == bfd_link_hash_defweak));
2557 if (!_bfd_elfNN_link_record_local_dynamic_symbol
2558 (x->info, h->root.u.def.section->owner,
2559 global_sym_index (h)))
2560 return FALSE;
2563 dyn_i->want_fptr = 0;
2565 else if (h == NULL || h->dynindx == -1)
2567 dyn_i->fptr_offset = x->ofs;
2568 x->ofs += 16;
2570 else
2571 dyn_i->want_fptr = 0;
2573 return TRUE;
2576 /* Allocate all the minimal PLT entries. */
2578 static bfd_boolean
2579 allocate_plt_entries (dyn_i, data)
2580 struct elfNN_ia64_dyn_sym_info *dyn_i;
2581 PTR data;
2583 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2585 if (dyn_i->want_plt)
2587 struct elf_link_hash_entry *h = dyn_i->h;
2589 if (h)
2590 while (h->root.type == bfd_link_hash_indirect
2591 || h->root.type == bfd_link_hash_warning)
2592 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2594 /* ??? Versioned symbols seem to lose ELF_LINK_HASH_NEEDS_PLT. */
2595 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2597 bfd_size_type offset = x->ofs;
2598 if (offset == 0)
2599 offset = PLT_HEADER_SIZE;
2600 dyn_i->plt_offset = offset;
2601 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2603 dyn_i->want_pltoff = 1;
2605 else
2607 dyn_i->want_plt = 0;
2608 dyn_i->want_plt2 = 0;
2611 return TRUE;
2614 /* Allocate all the full PLT entries. */
2616 static bfd_boolean
2617 allocate_plt2_entries (dyn_i, data)
2618 struct elfNN_ia64_dyn_sym_info *dyn_i;
2619 PTR data;
2621 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2623 if (dyn_i->want_plt2)
2625 struct elf_link_hash_entry *h = dyn_i->h;
2626 bfd_size_type ofs = x->ofs;
2628 dyn_i->plt2_offset = ofs;
2629 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2631 while (h->root.type == bfd_link_hash_indirect
2632 || h->root.type == bfd_link_hash_warning)
2633 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2634 dyn_i->h->plt.offset = ofs;
2636 return TRUE;
2639 /* Allocate all the PLTOFF entries requested by relocations and
2640 plt entries. We can't share space with allocated FPTR entries,
2641 because the latter are not necessarily addressable by the GP.
2642 ??? Relaxation might be able to determine that they are. */
2644 static bfd_boolean
2645 allocate_pltoff_entries (dyn_i, data)
2646 struct elfNN_ia64_dyn_sym_info *dyn_i;
2647 PTR data;
2649 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2651 if (dyn_i->want_pltoff)
2653 dyn_i->pltoff_offset = x->ofs;
2654 x->ofs += 16;
2656 return TRUE;
2659 /* Allocate dynamic relocations for those symbols that turned out
2660 to be dynamic. */
2662 static bfd_boolean
2663 allocate_dynrel_entries (dyn_i, data)
2664 struct elfNN_ia64_dyn_sym_info *dyn_i;
2665 PTR data;
2667 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2668 struct elfNN_ia64_link_hash_table *ia64_info;
2669 struct elfNN_ia64_dyn_reloc_entry *rent;
2670 bfd_boolean dynamic_symbol, shared, resolved_zero;
2672 ia64_info = elfNN_ia64_hash_table (x->info);
2674 /* Note that this can't be used in relation to FPTR relocs below. */
2675 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2677 shared = x->info->shared;
2678 resolved_zero = (dyn_i->h
2679 && ELF_ST_VISIBILITY (dyn_i->h->other)
2680 && dyn_i->h->root.type == bfd_link_hash_undefweak);
2682 /* Take care of the normal data relocations. */
2684 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2686 int count = rent->count;
2688 switch (rent->type)
2690 case R_IA64_FPTR64LSB:
2691 /* Allocate one iff !want_fptr and not PIE, which by this point
2692 will be true only if we're actually allocating one statically
2693 in the main executable. Position independent executables
2694 need a relative reloc. */
2695 if (dyn_i->want_fptr && !x->info->pie)
2696 continue;
2697 break;
2698 case R_IA64_PCREL64LSB:
2699 if (!dynamic_symbol)
2700 continue;
2701 break;
2702 case R_IA64_DIR64LSB:
2703 if (!dynamic_symbol && !shared)
2704 continue;
2705 break;
2706 case R_IA64_IPLTLSB:
2707 if (!dynamic_symbol && !shared)
2708 continue;
2709 /* Use two REL relocations for IPLT relocations
2710 against local symbols. */
2711 if (!dynamic_symbol)
2712 count *= 2;
2713 break;
2714 case R_IA64_TPREL64LSB:
2715 case R_IA64_DTPREL64LSB:
2716 case R_IA64_DTPMOD64LSB:
2717 break;
2718 default:
2719 abort ();
2721 rent->srel->_raw_size += sizeof (ElfNN_External_Rela) * count;
2724 /* Take care of the GOT and PLT relocations. */
2726 if ((!resolved_zero
2727 && (dynamic_symbol || shared)
2728 && (dyn_i->want_got || dyn_i->want_gotx))
2729 || (dyn_i->want_ltoff_fptr
2730 && dyn_i->h
2731 && dyn_i->h->dynindx != -1))
2733 if (!dyn_i->want_ltoff_fptr
2734 || !x->info->pie
2735 || dyn_i->h == NULL
2736 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2737 ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
2739 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2740 ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
2741 if (dynamic_symbol && dyn_i->want_dtpmod)
2742 ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
2743 if (dynamic_symbol && dyn_i->want_dtprel)
2744 ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
2745 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2747 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2748 ia64_info->rel_fptr_sec->_raw_size += sizeof (ElfNN_External_Rela);
2751 if (!resolved_zero && dyn_i->want_pltoff)
2753 bfd_size_type t = 0;
2755 /* Dynamic symbols get one IPLT relocation. Local symbols in
2756 shared libraries get two REL relocations. Local symbols in
2757 main applications get nothing. */
2758 if (dynamic_symbol)
2759 t = sizeof (ElfNN_External_Rela);
2760 else if (shared)
2761 t = 2 * sizeof (ElfNN_External_Rela);
2763 ia64_info->rel_pltoff_sec->_raw_size += t;
2766 return TRUE;
2769 static bfd_boolean
2770 elfNN_ia64_adjust_dynamic_symbol (info, h)
2771 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2772 struct elf_link_hash_entry *h;
2774 /* ??? Undefined symbols with PLT entries should be re-defined
2775 to be the PLT entry. */
2777 /* If this is a weak symbol, and there is a real definition, the
2778 processor independent code will have arranged for us to see the
2779 real definition first, and we can just use the same value. */
2780 if (h->weakdef != NULL)
2782 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2783 || h->weakdef->root.type == bfd_link_hash_defweak);
2784 h->root.u.def.section = h->weakdef->root.u.def.section;
2785 h->root.u.def.value = h->weakdef->root.u.def.value;
2786 return TRUE;
2789 /* If this is a reference to a symbol defined by a dynamic object which
2790 is not a function, we might allocate the symbol in our .dynbss section
2791 and allocate a COPY dynamic relocation.
2793 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2794 of hackery. */
2796 return TRUE;
2799 static bfd_boolean
2800 elfNN_ia64_size_dynamic_sections (output_bfd, info)
2801 bfd *output_bfd ATTRIBUTE_UNUSED;
2802 struct bfd_link_info *info;
2804 struct elfNN_ia64_allocate_data data;
2805 struct elfNN_ia64_link_hash_table *ia64_info;
2806 asection *sec;
2807 bfd *dynobj;
2808 bfd_boolean relplt = FALSE;
2810 dynobj = elf_hash_table(info)->dynobj;
2811 ia64_info = elfNN_ia64_hash_table (info);
2812 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
2813 BFD_ASSERT(dynobj != NULL);
2814 data.info = info;
2816 /* Set the contents of the .interp section to the interpreter. */
2817 if (ia64_info->root.dynamic_sections_created
2818 && info->executable)
2820 sec = bfd_get_section_by_name (dynobj, ".interp");
2821 BFD_ASSERT (sec != NULL);
2822 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
2823 sec->_raw_size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
2826 /* Allocate the GOT entries. */
2828 if (ia64_info->got_sec)
2830 data.ofs = 0;
2831 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
2832 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
2833 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
2834 ia64_info->got_sec->_raw_size = data.ofs;
2837 /* Allocate the FPTR entries. */
2839 if (ia64_info->fptr_sec)
2841 data.ofs = 0;
2842 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
2843 ia64_info->fptr_sec->_raw_size = data.ofs;
2846 /* Now that we've seen all of the input files, we can decide which
2847 symbols need plt entries. Allocate the minimal PLT entries first.
2848 We do this even though dynamic_sections_created may be FALSE, because
2849 this has the side-effect of clearing want_plt and want_plt2. */
2851 data.ofs = 0;
2852 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
2854 ia64_info->minplt_entries = 0;
2855 if (data.ofs)
2857 ia64_info->minplt_entries
2858 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
2861 /* Align the pointer for the plt2 entries. */
2862 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
2864 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
2865 if (data.ofs != 0)
2867 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
2869 ia64_info->plt_sec->_raw_size = data.ofs;
2871 /* If we've got a .plt, we need some extra memory for the dynamic
2872 linker. We stuff these in .got.plt. */
2873 sec = bfd_get_section_by_name (dynobj, ".got.plt");
2874 sec->_raw_size = 8 * PLT_RESERVED_WORDS;
2877 /* Allocate the PLTOFF entries. */
2879 if (ia64_info->pltoff_sec)
2881 data.ofs = 0;
2882 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
2883 ia64_info->pltoff_sec->_raw_size = data.ofs;
2886 if (ia64_info->root.dynamic_sections_created)
2888 /* Allocate space for the dynamic relocations that turned out to be
2889 required. */
2891 if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
2892 ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
2893 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
2896 /* We have now determined the sizes of the various dynamic sections.
2897 Allocate memory for them. */
2898 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2900 bfd_boolean strip;
2902 if (!(sec->flags & SEC_LINKER_CREATED))
2903 continue;
2905 /* If we don't need this section, strip it from the output file.
2906 There were several sections primarily related to dynamic
2907 linking that must be create before the linker maps input
2908 sections to output sections. The linker does that before
2909 bfd_elf_size_dynamic_sections is called, and it is that
2910 function which decides whether anything needs to go into
2911 these sections. */
2913 strip = (sec->_raw_size == 0);
2915 if (sec == ia64_info->got_sec)
2916 strip = FALSE;
2917 else if (sec == ia64_info->rel_got_sec)
2919 if (strip)
2920 ia64_info->rel_got_sec = NULL;
2921 else
2922 /* We use the reloc_count field as a counter if we need to
2923 copy relocs into the output file. */
2924 sec->reloc_count = 0;
2926 else if (sec == ia64_info->fptr_sec)
2928 if (strip)
2929 ia64_info->fptr_sec = NULL;
2931 else if (sec == ia64_info->plt_sec)
2933 if (strip)
2934 ia64_info->plt_sec = NULL;
2936 else if (sec == ia64_info->pltoff_sec)
2938 if (strip)
2939 ia64_info->pltoff_sec = NULL;
2941 else if (sec == ia64_info->rel_pltoff_sec)
2943 if (strip)
2944 ia64_info->rel_pltoff_sec = NULL;
2945 else
2947 relplt = TRUE;
2948 /* We use the reloc_count field as a counter if we need to
2949 copy relocs into the output file. */
2950 sec->reloc_count = 0;
2953 else
2955 const char *name;
2957 /* It's OK to base decisions on the section name, because none
2958 of the dynobj section names depend upon the input files. */
2959 name = bfd_get_section_name (dynobj, sec);
2961 if (strcmp (name, ".got.plt") == 0)
2962 strip = FALSE;
2963 else if (strncmp (name, ".rel", 4) == 0)
2965 if (!strip)
2967 /* We use the reloc_count field as a counter if we need to
2968 copy relocs into the output file. */
2969 sec->reloc_count = 0;
2972 else
2973 continue;
2976 if (strip)
2977 _bfd_strip_section_from_output (info, sec);
2978 else
2980 /* Allocate memory for the section contents. */
2981 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->_raw_size);
2982 if (sec->contents == NULL && sec->_raw_size != 0)
2983 return FALSE;
2987 if (elf_hash_table (info)->dynamic_sections_created)
2989 /* Add some entries to the .dynamic section. We fill in the values
2990 later (in finish_dynamic_sections) but we must add the entries now
2991 so that we get the correct size for the .dynamic section. */
2993 if (info->executable)
2995 /* The DT_DEBUG entry is filled in by the dynamic linker and used
2996 by the debugger. */
2997 #define add_dynamic_entry(TAG, VAL) \
2998 bfd_elfNN_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
3000 if (!add_dynamic_entry (DT_DEBUG, 0))
3001 return FALSE;
3004 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3005 return FALSE;
3006 if (!add_dynamic_entry (DT_PLTGOT, 0))
3007 return FALSE;
3009 if (relplt)
3011 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3012 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3013 || !add_dynamic_entry (DT_JMPREL, 0))
3014 return FALSE;
3017 if (!add_dynamic_entry (DT_RELA, 0)
3018 || !add_dynamic_entry (DT_RELASZ, 0)
3019 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3020 return FALSE;
3022 if (ia64_info->reltext)
3024 if (!add_dynamic_entry (DT_TEXTREL, 0))
3025 return FALSE;
3026 info->flags |= DF_TEXTREL;
3030 /* ??? Perhaps force __gp local. */
3032 return TRUE;
3035 static bfd_reloc_status_type
3036 elfNN_ia64_install_value (abfd, hit_addr, v, r_type)
3037 bfd *abfd;
3038 bfd_byte *hit_addr;
3039 bfd_vma v;
3040 unsigned int r_type;
3042 const struct ia64_operand *op;
3043 int bigendian = 0, shift = 0;
3044 bfd_vma t0, t1, insn, dword;
3045 enum ia64_opnd opnd;
3046 const char *err;
3047 size_t size = 8;
3048 #ifdef BFD_HOST_U_64_BIT
3049 BFD_HOST_U_64_BIT val = (BFD_HOST_U_64_BIT) v;
3050 #else
3051 bfd_vma val = v;
3052 #endif
3054 opnd = IA64_OPND_NIL;
3055 switch (r_type)
3057 case R_IA64_NONE:
3058 case R_IA64_LDXMOV:
3059 return bfd_reloc_ok;
3061 /* Instruction relocations. */
3063 case R_IA64_IMM14:
3064 case R_IA64_TPREL14:
3065 case R_IA64_DTPREL14:
3066 opnd = IA64_OPND_IMM14;
3067 break;
3069 case R_IA64_PCREL21F: opnd = IA64_OPND_TGT25; break;
3070 case R_IA64_PCREL21M: opnd = IA64_OPND_TGT25b; break;
3071 case R_IA64_PCREL60B: opnd = IA64_OPND_TGT64; break;
3072 case R_IA64_PCREL21B:
3073 case R_IA64_PCREL21BI:
3074 opnd = IA64_OPND_TGT25c;
3075 break;
3077 case R_IA64_IMM22:
3078 case R_IA64_GPREL22:
3079 case R_IA64_LTOFF22:
3080 case R_IA64_LTOFF22X:
3081 case R_IA64_PLTOFF22:
3082 case R_IA64_PCREL22:
3083 case R_IA64_LTOFF_FPTR22:
3084 case R_IA64_TPREL22:
3085 case R_IA64_DTPREL22:
3086 case R_IA64_LTOFF_TPREL22:
3087 case R_IA64_LTOFF_DTPMOD22:
3088 case R_IA64_LTOFF_DTPREL22:
3089 opnd = IA64_OPND_IMM22;
3090 break;
3092 case R_IA64_IMM64:
3093 case R_IA64_GPREL64I:
3094 case R_IA64_LTOFF64I:
3095 case R_IA64_PLTOFF64I:
3096 case R_IA64_PCREL64I:
3097 case R_IA64_FPTR64I:
3098 case R_IA64_LTOFF_FPTR64I:
3099 case R_IA64_TPREL64I:
3100 case R_IA64_DTPREL64I:
3101 opnd = IA64_OPND_IMMU64;
3102 break;
3104 /* Data relocations. */
3106 case R_IA64_DIR32MSB:
3107 case R_IA64_GPREL32MSB:
3108 case R_IA64_FPTR32MSB:
3109 case R_IA64_PCREL32MSB:
3110 case R_IA64_LTOFF_FPTR32MSB:
3111 case R_IA64_SEGREL32MSB:
3112 case R_IA64_SECREL32MSB:
3113 case R_IA64_LTV32MSB:
3114 case R_IA64_DTPREL32MSB:
3115 size = 4; bigendian = 1;
3116 break;
3118 case R_IA64_DIR32LSB:
3119 case R_IA64_GPREL32LSB:
3120 case R_IA64_FPTR32LSB:
3121 case R_IA64_PCREL32LSB:
3122 case R_IA64_LTOFF_FPTR32LSB:
3123 case R_IA64_SEGREL32LSB:
3124 case R_IA64_SECREL32LSB:
3125 case R_IA64_LTV32LSB:
3126 case R_IA64_DTPREL32LSB:
3127 size = 4; bigendian = 0;
3128 break;
3130 case R_IA64_DIR64MSB:
3131 case R_IA64_GPREL64MSB:
3132 case R_IA64_PLTOFF64MSB:
3133 case R_IA64_FPTR64MSB:
3134 case R_IA64_PCREL64MSB:
3135 case R_IA64_LTOFF_FPTR64MSB:
3136 case R_IA64_SEGREL64MSB:
3137 case R_IA64_SECREL64MSB:
3138 case R_IA64_LTV64MSB:
3139 case R_IA64_TPREL64MSB:
3140 case R_IA64_DTPMOD64MSB:
3141 case R_IA64_DTPREL64MSB:
3142 size = 8; bigendian = 1;
3143 break;
3145 case R_IA64_DIR64LSB:
3146 case R_IA64_GPREL64LSB:
3147 case R_IA64_PLTOFF64LSB:
3148 case R_IA64_FPTR64LSB:
3149 case R_IA64_PCREL64LSB:
3150 case R_IA64_LTOFF_FPTR64LSB:
3151 case R_IA64_SEGREL64LSB:
3152 case R_IA64_SECREL64LSB:
3153 case R_IA64_LTV64LSB:
3154 case R_IA64_TPREL64LSB:
3155 case R_IA64_DTPMOD64LSB:
3156 case R_IA64_DTPREL64LSB:
3157 size = 8; bigendian = 0;
3158 break;
3160 /* Unsupported / Dynamic relocations. */
3161 default:
3162 return bfd_reloc_notsupported;
3165 switch (opnd)
3167 case IA64_OPND_IMMU64:
3168 hit_addr -= (long) hit_addr & 0x3;
3169 t0 = bfd_get_64 (abfd, hit_addr);
3170 t1 = bfd_get_64 (abfd, hit_addr + 8);
3172 /* tmpl/s: bits 0.. 5 in t0
3173 slot 0: bits 5..45 in t0
3174 slot 1: bits 46..63 in t0, bits 0..22 in t1
3175 slot 2: bits 23..63 in t1 */
3177 /* First, clear the bits that form the 64 bit constant. */
3178 t0 &= ~(0x3ffffLL << 46);
3179 t1 &= ~(0x7fffffLL
3180 | (( (0x07fLL << 13) | (0x1ffLL << 27)
3181 | (0x01fLL << 22) | (0x001LL << 21)
3182 | (0x001LL << 36)) << 23));
3184 t0 |= ((val >> 22) & 0x03ffffLL) << 46; /* 18 lsbs of imm41 */
3185 t1 |= ((val >> 40) & 0x7fffffLL) << 0; /* 23 msbs of imm41 */
3186 t1 |= ( (((val >> 0) & 0x07f) << 13) /* imm7b */
3187 | (((val >> 7) & 0x1ff) << 27) /* imm9d */
3188 | (((val >> 16) & 0x01f) << 22) /* imm5c */
3189 | (((val >> 21) & 0x001) << 21) /* ic */
3190 | (((val >> 63) & 0x001) << 36)) << 23; /* i */
3192 bfd_put_64 (abfd, t0, hit_addr);
3193 bfd_put_64 (abfd, t1, hit_addr + 8);
3194 break;
3196 case IA64_OPND_TGT64:
3197 hit_addr -= (long) hit_addr & 0x3;
3198 t0 = bfd_get_64 (abfd, hit_addr);
3199 t1 = bfd_get_64 (abfd, hit_addr + 8);
3201 /* tmpl/s: bits 0.. 5 in t0
3202 slot 0: bits 5..45 in t0
3203 slot 1: bits 46..63 in t0, bits 0..22 in t1
3204 slot 2: bits 23..63 in t1 */
3206 /* First, clear the bits that form the 64 bit constant. */
3207 t0 &= ~(0x3ffffLL << 46);
3208 t1 &= ~(0x7fffffLL
3209 | ((1LL << 36 | 0xfffffLL << 13) << 23));
3211 val >>= 4;
3212 t0 |= ((val >> 20) & 0xffffLL) << 2 << 46; /* 16 lsbs of imm39 */
3213 t1 |= ((val >> 36) & 0x7fffffLL) << 0; /* 23 msbs of imm39 */
3214 t1 |= ((((val >> 0) & 0xfffffLL) << 13) /* imm20b */
3215 | (((val >> 59) & 0x1LL) << 36)) << 23; /* i */
3217 bfd_put_64 (abfd, t0, hit_addr);
3218 bfd_put_64 (abfd, t1, hit_addr + 8);
3219 break;
3221 default:
3222 switch ((long) hit_addr & 0x3)
3224 case 0: shift = 5; break;
3225 case 1: shift = 14; hit_addr += 3; break;
3226 case 2: shift = 23; hit_addr += 6; break;
3227 case 3: return bfd_reloc_notsupported; /* shouldn't happen... */
3229 dword = bfd_get_64 (abfd, hit_addr);
3230 insn = (dword >> shift) & 0x1ffffffffffLL;
3232 op = elf64_ia64_operands + opnd;
3233 err = (*op->insert) (op, val, (ia64_insn *)& insn);
3234 if (err)
3235 return bfd_reloc_overflow;
3237 dword &= ~(0x1ffffffffffLL << shift);
3238 dword |= (insn << shift);
3239 bfd_put_64 (abfd, dword, hit_addr);
3240 break;
3242 case IA64_OPND_NIL:
3243 /* A data relocation. */
3244 if (bigendian)
3245 if (size == 4)
3246 bfd_putb32 (val, hit_addr);
3247 else
3248 bfd_putb64 (val, hit_addr);
3249 else
3250 if (size == 4)
3251 bfd_putl32 (val, hit_addr);
3252 else
3253 bfd_putl64 (val, hit_addr);
3254 break;
3257 return bfd_reloc_ok;
3260 static void
3261 elfNN_ia64_install_dyn_reloc (abfd, info, sec, srel, offset, type,
3262 dynindx, addend)
3263 bfd *abfd;
3264 struct bfd_link_info *info;
3265 asection *sec;
3266 asection *srel;
3267 bfd_vma offset;
3268 unsigned int type;
3269 long dynindx;
3270 bfd_vma addend;
3272 Elf_Internal_Rela outrel;
3273 bfd_byte *loc;
3275 BFD_ASSERT (dynindx != -1);
3276 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3277 outrel.r_addend = addend;
3278 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3279 if (outrel.r_offset >= (bfd_vma) -2)
3281 /* Run for the hills. We shouldn't be outputting a relocation
3282 for this. So do what everyone else does and output a no-op. */
3283 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3284 outrel.r_addend = 0;
3285 outrel.r_offset = 0;
3287 else
3288 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3290 loc = srel->contents;
3291 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3292 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3293 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count
3294 <= srel->_cooked_size);
3297 /* Store an entry for target address TARGET_ADDR in the linkage table
3298 and return the gp-relative address of the linkage table entry. */
3300 static bfd_vma
3301 set_got_entry (abfd, info, dyn_i, dynindx, addend, value, dyn_r_type)
3302 bfd *abfd;
3303 struct bfd_link_info *info;
3304 struct elfNN_ia64_dyn_sym_info *dyn_i;
3305 long dynindx;
3306 bfd_vma addend;
3307 bfd_vma value;
3308 unsigned int dyn_r_type;
3310 struct elfNN_ia64_link_hash_table *ia64_info;
3311 asection *got_sec;
3312 bfd_boolean done;
3313 bfd_vma got_offset;
3315 ia64_info = elfNN_ia64_hash_table (info);
3316 got_sec = ia64_info->got_sec;
3318 switch (dyn_r_type)
3320 case R_IA64_TPREL64LSB:
3321 done = dyn_i->tprel_done;
3322 dyn_i->tprel_done = TRUE;
3323 got_offset = dyn_i->tprel_offset;
3324 break;
3325 case R_IA64_DTPMOD64LSB:
3326 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3328 done = dyn_i->dtpmod_done;
3329 dyn_i->dtpmod_done = TRUE;
3331 else
3333 done = ia64_info->self_dtpmod_done;
3334 ia64_info->self_dtpmod_done = TRUE;
3335 dynindx = 0;
3337 got_offset = dyn_i->dtpmod_offset;
3338 break;
3339 case R_IA64_DTPREL64LSB:
3340 done = dyn_i->dtprel_done;
3341 dyn_i->dtprel_done = TRUE;
3342 got_offset = dyn_i->dtprel_offset;
3343 break;
3344 default:
3345 done = dyn_i->got_done;
3346 dyn_i->got_done = TRUE;
3347 got_offset = dyn_i->got_offset;
3348 break;
3351 BFD_ASSERT ((got_offset & 7) == 0);
3353 if (! done)
3355 /* Store the target address in the linkage table entry. */
3356 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3358 /* Install a dynamic relocation if needed. */
3359 if (((info->shared
3360 && (!dyn_i->h
3361 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3362 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3363 && dyn_r_type != R_IA64_DTPREL64LSB)
3364 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3365 || (dynindx != -1 && dyn_r_type == R_IA64_FPTR64LSB))
3366 && (!dyn_i->want_ltoff_fptr
3367 || !info->pie
3368 || !dyn_i->h
3369 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3371 if (dynindx == -1
3372 && dyn_r_type != R_IA64_TPREL64LSB
3373 && dyn_r_type != R_IA64_DTPMOD64LSB
3374 && dyn_r_type != R_IA64_DTPREL64LSB)
3376 dyn_r_type = R_IA64_REL64LSB;
3377 dynindx = 0;
3378 addend = value;
3381 if (bfd_big_endian (abfd))
3383 switch (dyn_r_type)
3385 case R_IA64_REL64LSB:
3386 dyn_r_type = R_IA64_REL64MSB;
3387 break;
3388 case R_IA64_DIR64LSB:
3389 dyn_r_type = R_IA64_DIR64MSB;
3390 break;
3391 case R_IA64_FPTR64LSB:
3392 dyn_r_type = R_IA64_FPTR64MSB;
3393 break;
3394 case R_IA64_TPREL64LSB:
3395 dyn_r_type = R_IA64_TPREL64MSB;
3396 break;
3397 case R_IA64_DTPMOD64LSB:
3398 dyn_r_type = R_IA64_DTPMOD64MSB;
3399 break;
3400 case R_IA64_DTPREL64LSB:
3401 dyn_r_type = R_IA64_DTPREL64MSB;
3402 break;
3403 default:
3404 BFD_ASSERT (FALSE);
3405 break;
3409 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3410 ia64_info->rel_got_sec,
3411 got_offset, dyn_r_type,
3412 dynindx, addend);
3416 /* Return the address of the linkage table entry. */
3417 value = (got_sec->output_section->vma
3418 + got_sec->output_offset
3419 + got_offset);
3421 return value;
3424 /* Fill in a function descriptor consisting of the function's code
3425 address and its global pointer. Return the descriptor's address. */
3427 static bfd_vma
3428 set_fptr_entry (abfd, info, dyn_i, value)
3429 bfd *abfd;
3430 struct bfd_link_info *info;
3431 struct elfNN_ia64_dyn_sym_info *dyn_i;
3432 bfd_vma value;
3434 struct elfNN_ia64_link_hash_table *ia64_info;
3435 asection *fptr_sec;
3437 ia64_info = elfNN_ia64_hash_table (info);
3438 fptr_sec = ia64_info->fptr_sec;
3440 if (!dyn_i->fptr_done)
3442 dyn_i->fptr_done = 1;
3444 /* Fill in the function descriptor. */
3445 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3446 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3447 fptr_sec->contents + dyn_i->fptr_offset + 8);
3448 if (ia64_info->rel_fptr_sec)
3450 Elf_Internal_Rela outrel;
3451 bfd_byte *loc;
3453 if (bfd_little_endian (abfd))
3454 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3455 else
3456 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3457 outrel.r_addend = value;
3458 outrel.r_offset = (fptr_sec->output_section->vma
3459 + fptr_sec->output_offset
3460 + dyn_i->fptr_offset);
3461 loc = ia64_info->rel_fptr_sec->contents;
3462 loc += ia64_info->rel_fptr_sec->reloc_count++
3463 * sizeof (ElfNN_External_Rela);
3464 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3468 /* Return the descriptor's address. */
3469 value = (fptr_sec->output_section->vma
3470 + fptr_sec->output_offset
3471 + dyn_i->fptr_offset);
3473 return value;
3476 /* Fill in a PLTOFF entry consisting of the function's code address
3477 and its global pointer. Return the descriptor's address. */
3479 static bfd_vma
3480 set_pltoff_entry (abfd, info, dyn_i, value, is_plt)
3481 bfd *abfd;
3482 struct bfd_link_info *info;
3483 struct elfNN_ia64_dyn_sym_info *dyn_i;
3484 bfd_vma value;
3485 bfd_boolean is_plt;
3487 struct elfNN_ia64_link_hash_table *ia64_info;
3488 asection *pltoff_sec;
3490 ia64_info = elfNN_ia64_hash_table (info);
3491 pltoff_sec = ia64_info->pltoff_sec;
3493 /* Don't do anything if this symbol uses a real PLT entry. In
3494 that case, we'll fill this in during finish_dynamic_symbol. */
3495 if ((! dyn_i->want_plt || is_plt)
3496 && !dyn_i->pltoff_done)
3498 bfd_vma gp = _bfd_get_gp_value (abfd);
3500 /* Fill in the function descriptor. */
3501 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3502 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3504 /* Install dynamic relocations if needed. */
3505 if (!is_plt
3506 && info->shared
3507 && (!dyn_i->h
3508 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3509 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3511 unsigned int dyn_r_type;
3513 if (bfd_big_endian (abfd))
3514 dyn_r_type = R_IA64_REL64MSB;
3515 else
3516 dyn_r_type = R_IA64_REL64LSB;
3518 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3519 ia64_info->rel_pltoff_sec,
3520 dyn_i->pltoff_offset,
3521 dyn_r_type, 0, value);
3522 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3523 ia64_info->rel_pltoff_sec,
3524 dyn_i->pltoff_offset + 8,
3525 dyn_r_type, 0, gp);
3528 dyn_i->pltoff_done = 1;
3531 /* Return the descriptor's address. */
3532 value = (pltoff_sec->output_section->vma
3533 + pltoff_sec->output_offset
3534 + dyn_i->pltoff_offset);
3536 return value;
3539 /* Return the base VMA address which should be subtracted from real addresses
3540 when resolving @tprel() relocation.
3541 Main program TLS (whose template starts at PT_TLS p_vaddr)
3542 is assigned offset round(16, PT_TLS p_align). */
3544 static bfd_vma
3545 elfNN_ia64_tprel_base (info)
3546 struct bfd_link_info *info;
3548 asection *tls_sec = elf_hash_table (info)->tls_sec;
3550 BFD_ASSERT (tls_sec != NULL);
3551 return tls_sec->vma - align_power ((bfd_vma) 16, tls_sec->alignment_power);
3554 /* Return the base VMA address which should be subtracted from real addresses
3555 when resolving @dtprel() relocation.
3556 This is PT_TLS segment p_vaddr. */
3558 static bfd_vma
3559 elfNN_ia64_dtprel_base (info)
3560 struct bfd_link_info *info;
3562 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
3563 return elf_hash_table (info)->tls_sec->vma;
3566 /* Called through qsort to sort the .IA_64.unwind section during a
3567 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3568 to the output bfd so we can do proper endianness frobbing. */
3570 static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3572 static int
3573 elfNN_ia64_unwind_entry_compare (a, b)
3574 const PTR a;
3575 const PTR b;
3577 bfd_vma av, bv;
3579 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3580 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3582 return (av < bv ? -1 : av > bv ? 1 : 0);
3585 /* Make sure we've got ourselves a nice fat __gp value. */
3586 static bfd_boolean
3587 elfNN_ia64_choose_gp (abfd, info)
3588 bfd *abfd;
3589 struct bfd_link_info *info;
3591 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3592 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3593 struct elf_link_hash_entry *gp;
3594 bfd_vma gp_val;
3595 asection *os;
3596 struct elfNN_ia64_link_hash_table *ia64_info;
3598 ia64_info = elfNN_ia64_hash_table (info);
3600 /* Find the min and max vma of all sections marked short. Also collect
3601 min and max vma of any type, for use in selecting a nice gp. */
3602 for (os = abfd->sections; os ; os = os->next)
3604 bfd_vma lo, hi;
3606 if ((os->flags & SEC_ALLOC) == 0)
3607 continue;
3609 lo = os->vma;
3610 hi = os->vma + os->_raw_size;
3611 if (hi < lo)
3612 hi = (bfd_vma) -1;
3614 if (min_vma > lo)
3615 min_vma = lo;
3616 if (max_vma < hi)
3617 max_vma = hi;
3618 if (os->flags & SEC_SMALL_DATA)
3620 if (min_short_vma > lo)
3621 min_short_vma = lo;
3622 if (max_short_vma < hi)
3623 max_short_vma = hi;
3627 /* See if the user wants to force a value. */
3628 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3629 FALSE, FALSE);
3631 if (gp
3632 && (gp->root.type == bfd_link_hash_defined
3633 || gp->root.type == bfd_link_hash_defweak))
3635 asection *gp_sec = gp->root.u.def.section;
3636 gp_val = (gp->root.u.def.value
3637 + gp_sec->output_section->vma
3638 + gp_sec->output_offset);
3640 else
3642 /* Pick a sensible value. */
3644 asection *got_sec = ia64_info->got_sec;
3646 /* Start with just the address of the .got. */
3647 if (got_sec)
3648 gp_val = got_sec->output_section->vma;
3649 else if (max_short_vma != 0)
3650 gp_val = min_short_vma;
3651 else
3652 gp_val = min_vma;
3654 /* If it is possible to address the entire image, but we
3655 don't with the choice above, adjust. */
3656 if (max_vma - min_vma < 0x400000
3657 && max_vma - gp_val <= 0x200000
3658 && gp_val - min_vma > 0x200000)
3659 gp_val = min_vma + 0x200000;
3660 else if (max_short_vma != 0)
3662 /* If we don't cover all the short data, adjust. */
3663 if (max_short_vma - gp_val >= 0x200000)
3664 gp_val = min_short_vma + 0x200000;
3666 /* If we're addressing stuff past the end, adjust back. */
3667 if (gp_val > max_vma)
3668 gp_val = max_vma - 0x200000 + 8;
3672 /* Validate whether all SHF_IA_64_SHORT sections are within
3673 range of the chosen GP. */
3675 if (max_short_vma != 0)
3677 if (max_short_vma - min_short_vma >= 0x400000)
3679 (*_bfd_error_handler)
3680 (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3681 bfd_get_filename (abfd),
3682 (unsigned long) (max_short_vma - min_short_vma));
3683 return FALSE;
3685 else if ((gp_val > min_short_vma
3686 && gp_val - min_short_vma > 0x200000)
3687 || (gp_val < max_short_vma
3688 && max_short_vma - gp_val >= 0x200000))
3690 (*_bfd_error_handler)
3691 (_("%s: __gp does not cover short data segment"),
3692 bfd_get_filename (abfd));
3693 return FALSE;
3697 _bfd_set_gp_value (abfd, gp_val);
3699 return TRUE;
3702 static bfd_boolean
3703 elfNN_ia64_final_link (abfd, info)
3704 bfd *abfd;
3705 struct bfd_link_info *info;
3707 struct elfNN_ia64_link_hash_table *ia64_info;
3708 asection *unwind_output_sec;
3710 ia64_info = elfNN_ia64_hash_table (info);
3712 /* Make sure we've got ourselves a nice fat __gp value. */
3713 if (!info->relocatable)
3715 bfd_vma gp_val = _bfd_get_gp_value (abfd);
3716 struct elf_link_hash_entry *gp;
3718 if (gp_val == 0)
3720 if (! elfNN_ia64_choose_gp (abfd, info))
3721 return FALSE;
3722 gp_val = _bfd_get_gp_value (abfd);
3725 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3726 FALSE, FALSE);
3727 if (gp)
3729 gp->root.type = bfd_link_hash_defined;
3730 gp->root.u.def.value = gp_val;
3731 gp->root.u.def.section = bfd_abs_section_ptr;
3735 /* If we're producing a final executable, we need to sort the contents
3736 of the .IA_64.unwind section. Force this section to be relocated
3737 into memory rather than written immediately to the output file. */
3738 unwind_output_sec = NULL;
3739 if (!info->relocatable)
3741 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3742 if (s)
3744 unwind_output_sec = s->output_section;
3745 unwind_output_sec->contents
3746 = bfd_malloc (unwind_output_sec->_raw_size);
3747 if (unwind_output_sec->contents == NULL)
3748 return FALSE;
3752 /* Invoke the regular ELF backend linker to do all the work. */
3753 if (!bfd_elfNN_bfd_final_link (abfd, info))
3754 return FALSE;
3756 if (unwind_output_sec)
3758 elfNN_ia64_unwind_entry_compare_bfd = abfd;
3759 qsort (unwind_output_sec->contents,
3760 (size_t) (unwind_output_sec->_raw_size / 24),
3762 elfNN_ia64_unwind_entry_compare);
3764 if (! bfd_set_section_contents (abfd, unwind_output_sec,
3765 unwind_output_sec->contents, (bfd_vma) 0,
3766 unwind_output_sec->_raw_size))
3767 return FALSE;
3770 return TRUE;
3773 static bfd_boolean
3774 elfNN_ia64_relocate_section (output_bfd, info, input_bfd, input_section,
3775 contents, relocs, local_syms, local_sections)
3776 bfd *output_bfd;
3777 struct bfd_link_info *info;
3778 bfd *input_bfd;
3779 asection *input_section;
3780 bfd_byte *contents;
3781 Elf_Internal_Rela *relocs;
3782 Elf_Internal_Sym *local_syms;
3783 asection **local_sections;
3785 struct elfNN_ia64_link_hash_table *ia64_info;
3786 Elf_Internal_Shdr *symtab_hdr;
3787 Elf_Internal_Rela *rel;
3788 Elf_Internal_Rela *relend;
3789 asection *srel;
3790 bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3791 bfd_vma gp_val;
3793 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3794 ia64_info = elfNN_ia64_hash_table (info);
3796 /* Infect various flags from the input section to the output section. */
3797 if (info->relocatable)
3799 bfd_vma flags;
3801 flags = elf_section_data(input_section)->this_hdr.sh_flags;
3802 flags &= SHF_IA_64_NORECOV;
3804 elf_section_data(input_section->output_section)
3805 ->this_hdr.sh_flags |= flags;
3806 return TRUE;
3809 gp_val = _bfd_get_gp_value (output_bfd);
3810 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3812 rel = relocs;
3813 relend = relocs + input_section->reloc_count;
3814 for (; rel < relend; ++rel)
3816 struct elf_link_hash_entry *h;
3817 struct elfNN_ia64_dyn_sym_info *dyn_i;
3818 bfd_reloc_status_type r;
3819 reloc_howto_type *howto;
3820 unsigned long r_symndx;
3821 Elf_Internal_Sym *sym;
3822 unsigned int r_type;
3823 bfd_vma value;
3824 asection *sym_sec;
3825 bfd_byte *hit_addr;
3826 bfd_boolean dynamic_symbol_p;
3827 bfd_boolean undef_weak_ref;
3829 r_type = ELFNN_R_TYPE (rel->r_info);
3830 if (r_type > R_IA64_MAX_RELOC_CODE)
3832 (*_bfd_error_handler)
3833 (_("%s: unknown relocation type %d"),
3834 bfd_archive_filename (input_bfd), (int)r_type);
3835 bfd_set_error (bfd_error_bad_value);
3836 ret_val = FALSE;
3837 continue;
3840 howto = lookup_howto (r_type);
3841 r_symndx = ELFNN_R_SYM (rel->r_info);
3842 h = NULL;
3843 sym = NULL;
3844 sym_sec = NULL;
3845 undef_weak_ref = FALSE;
3847 if (r_symndx < symtab_hdr->sh_info)
3849 /* Reloc against local symbol. */
3850 asection *msec;
3851 sym = local_syms + r_symndx;
3852 sym_sec = local_sections[r_symndx];
3853 msec = sym_sec;
3854 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3855 if ((sym_sec->flags & SEC_MERGE)
3856 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3857 && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE)
3859 struct elfNN_ia64_local_hash_entry *loc_h;
3861 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3862 if (loc_h && ! loc_h->sec_merge_done)
3864 struct elfNN_ia64_dyn_sym_info *dynent;
3866 for (dynent = loc_h->info; dynent; dynent = dynent->next)
3868 msec = sym_sec;
3869 dynent->addend =
3870 _bfd_merged_section_offset (output_bfd, &msec,
3871 elf_section_data (msec)->
3872 sec_info,
3873 sym->st_value
3874 + dynent->addend,
3875 (bfd_vma) 0);
3876 dynent->addend -= sym->st_value;
3877 dynent->addend += msec->output_section->vma
3878 + msec->output_offset
3879 - sym_sec->output_section->vma
3880 - sym_sec->output_offset;
3882 loc_h->sec_merge_done = 1;
3886 else
3888 bfd_boolean unresolved_reloc;
3889 bfd_boolean warned;
3891 RELOC_FOR_GLOBAL_SYMBOL (h, elf_sym_hashes (input_bfd),
3892 r_symndx,
3893 symtab_hdr, value, sym_sec,
3894 unresolved_reloc, info,
3895 warned);
3897 if (h->root.type == bfd_link_hash_undefweak)
3898 undef_weak_ref = TRUE;
3899 else if (warned)
3900 continue;
3903 hit_addr = contents + rel->r_offset;
3904 value += rel->r_addend;
3905 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3907 switch (r_type)
3909 case R_IA64_NONE:
3910 case R_IA64_LDXMOV:
3911 continue;
3913 case R_IA64_IMM14:
3914 case R_IA64_IMM22:
3915 case R_IA64_IMM64:
3916 case R_IA64_DIR32MSB:
3917 case R_IA64_DIR32LSB:
3918 case R_IA64_DIR64MSB:
3919 case R_IA64_DIR64LSB:
3920 /* Install a dynamic relocation for this reloc. */
3921 if ((dynamic_symbol_p || info->shared)
3922 && r_symndx != 0
3923 && (input_section->flags & SEC_ALLOC) != 0)
3925 unsigned int dyn_r_type;
3926 long dynindx;
3927 bfd_vma addend;
3929 BFD_ASSERT (srel != NULL);
3931 /* If we don't need dynamic symbol lookup, find a
3932 matching RELATIVE relocation. */
3933 dyn_r_type = r_type;
3934 if (dynamic_symbol_p)
3936 dynindx = h->dynindx;
3937 addend = rel->r_addend;
3938 value = 0;
3940 else
3942 switch (r_type)
3944 case R_IA64_DIR32MSB:
3945 dyn_r_type = R_IA64_REL32MSB;
3946 break;
3947 case R_IA64_DIR32LSB:
3948 dyn_r_type = R_IA64_REL32LSB;
3949 break;
3950 case R_IA64_DIR64MSB:
3951 dyn_r_type = R_IA64_REL64MSB;
3952 break;
3953 case R_IA64_DIR64LSB:
3954 dyn_r_type = R_IA64_REL64LSB;
3955 break;
3957 default:
3958 /* We can't represent this without a dynamic symbol.
3959 Adjust the relocation to be against an output
3960 section symbol, which are always present in the
3961 dynamic symbol table. */
3962 /* ??? People shouldn't be doing non-pic code in
3963 shared libraries. Hork. */
3964 (*_bfd_error_handler)
3965 (_("%s: linking non-pic code in a shared library"),
3966 bfd_archive_filename (input_bfd));
3967 ret_val = FALSE;
3968 continue;
3970 dynindx = 0;
3971 addend = value;
3974 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
3975 srel, rel->r_offset, dyn_r_type,
3976 dynindx, addend);
3978 /* Fall through. */
3980 case R_IA64_LTV32MSB:
3981 case R_IA64_LTV32LSB:
3982 case R_IA64_LTV64MSB:
3983 case R_IA64_LTV64LSB:
3984 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
3985 break;
3987 case R_IA64_GPREL22:
3988 case R_IA64_GPREL64I:
3989 case R_IA64_GPREL32MSB:
3990 case R_IA64_GPREL32LSB:
3991 case R_IA64_GPREL64MSB:
3992 case R_IA64_GPREL64LSB:
3993 if (dynamic_symbol_p)
3995 (*_bfd_error_handler)
3996 (_("%s: @gprel relocation against dynamic symbol %s"),
3997 bfd_archive_filename (input_bfd), h->root.root.string);
3998 ret_val = FALSE;
3999 continue;
4001 value -= gp_val;
4002 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4003 break;
4005 case R_IA64_LTOFF22:
4006 case R_IA64_LTOFF22X:
4007 case R_IA64_LTOFF64I:
4008 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4009 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4010 rel->r_addend, value, R_IA64_DIR64LSB);
4011 value -= gp_val;
4012 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4013 break;
4015 case R_IA64_PLTOFF22:
4016 case R_IA64_PLTOFF64I:
4017 case R_IA64_PLTOFF64MSB:
4018 case R_IA64_PLTOFF64LSB:
4019 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4020 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4021 value -= gp_val;
4022 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4023 break;
4025 case R_IA64_FPTR64I:
4026 case R_IA64_FPTR32MSB:
4027 case R_IA64_FPTR32LSB:
4028 case R_IA64_FPTR64MSB:
4029 case R_IA64_FPTR64LSB:
4030 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4031 if (dyn_i->want_fptr)
4033 if (!undef_weak_ref)
4034 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4036 if (!dyn_i->want_fptr || info->pie)
4038 long dynindx;
4039 unsigned int dyn_r_type = r_type;
4040 bfd_vma addend = rel->r_addend;
4042 /* Otherwise, we expect the dynamic linker to create
4043 the entry. */
4045 if (dyn_i->want_fptr)
4047 if (r_type == R_IA64_FPTR64I)
4049 /* We can't represent this without a dynamic symbol.
4050 Adjust the relocation to be against an output
4051 section symbol, which are always present in the
4052 dynamic symbol table. */
4053 /* ??? People shouldn't be doing non-pic code in
4054 shared libraries. Hork. */
4055 (*_bfd_error_handler)
4056 (_("%s: linking non-pic code in a position independent executable"),
4057 bfd_archive_filename (input_bfd));
4058 ret_val = FALSE;
4059 continue;
4061 dynindx = 0;
4062 addend = value;
4063 dyn_r_type = r_type + R_IA64_REL64LSB - R_IA64_FPTR64LSB;
4065 else if (h)
4067 if (h->dynindx != -1)
4068 dynindx = h->dynindx;
4069 else
4070 dynindx = (_bfd_elf_link_lookup_local_dynindx
4071 (info, h->root.u.def.section->owner,
4072 global_sym_index (h)));
4073 value = 0;
4075 else
4077 dynindx = (_bfd_elf_link_lookup_local_dynindx
4078 (info, input_bfd, (long) r_symndx));
4079 value = 0;
4082 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4083 srel, rel->r_offset, dyn_r_type,
4084 dynindx, addend);
4087 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4088 break;
4090 case R_IA64_LTOFF_FPTR22:
4091 case R_IA64_LTOFF_FPTR64I:
4092 case R_IA64_LTOFF_FPTR32MSB:
4093 case R_IA64_LTOFF_FPTR32LSB:
4094 case R_IA64_LTOFF_FPTR64MSB:
4095 case R_IA64_LTOFF_FPTR64LSB:
4097 long dynindx;
4099 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4100 if (dyn_i->want_fptr)
4102 BFD_ASSERT (h == NULL || h->dynindx == -1)
4103 if (!undef_weak_ref)
4104 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4105 dynindx = -1;
4107 else
4109 /* Otherwise, we expect the dynamic linker to create
4110 the entry. */
4111 if (h)
4113 if (h->dynindx != -1)
4114 dynindx = h->dynindx;
4115 else
4116 dynindx = (_bfd_elf_link_lookup_local_dynindx
4117 (info, h->root.u.def.section->owner,
4118 global_sym_index (h)));
4120 else
4121 dynindx = (_bfd_elf_link_lookup_local_dynindx
4122 (info, input_bfd, (long) r_symndx));
4123 value = 0;
4126 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4127 rel->r_addend, value, R_IA64_FPTR64LSB);
4128 value -= gp_val;
4129 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4131 break;
4133 case R_IA64_PCREL32MSB:
4134 case R_IA64_PCREL32LSB:
4135 case R_IA64_PCREL64MSB:
4136 case R_IA64_PCREL64LSB:
4137 /* Install a dynamic relocation for this reloc. */
4138 if (dynamic_symbol_p && r_symndx != 0)
4140 BFD_ASSERT (srel != NULL);
4142 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4143 srel, rel->r_offset, r_type,
4144 h->dynindx, rel->r_addend);
4146 goto finish_pcrel;
4148 case R_IA64_PCREL21B:
4149 case R_IA64_PCREL60B:
4150 /* We should have created a PLT entry for any dynamic symbol. */
4151 dyn_i = NULL;
4152 if (h)
4153 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4155 if (dyn_i && dyn_i->want_plt2)
4157 /* Should have caught this earlier. */
4158 BFD_ASSERT (rel->r_addend == 0);
4160 value = (ia64_info->plt_sec->output_section->vma
4161 + ia64_info->plt_sec->output_offset
4162 + dyn_i->plt2_offset);
4164 else
4166 /* Since there's no PLT entry, Validate that this is
4167 locally defined. */
4168 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4170 /* If the symbol is undef_weak, we shouldn't be trying
4171 to call it. There's every chance that we'd wind up
4172 with an out-of-range fixup here. Don't bother setting
4173 any value at all. */
4174 if (undef_weak_ref)
4175 continue;
4177 goto finish_pcrel;
4179 case R_IA64_PCREL21BI:
4180 case R_IA64_PCREL21F:
4181 case R_IA64_PCREL21M:
4182 case R_IA64_PCREL22:
4183 case R_IA64_PCREL64I:
4184 /* The PCREL21BI reloc is specifically not intended for use with
4185 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4186 fixup code, and thus probably ought not be dynamic. The
4187 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4188 if (dynamic_symbol_p)
4190 const char *msg;
4192 if (r_type == R_IA64_PCREL21BI)
4193 msg = _("%s: @internal branch to dynamic symbol %s");
4194 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4195 msg = _("%s: speculation fixup to dynamic symbol %s");
4196 else
4197 msg = _("%s: @pcrel relocation against dynamic symbol %s");
4198 (*_bfd_error_handler) (msg, bfd_archive_filename (input_bfd),
4199 h->root.root.string);
4200 ret_val = FALSE;
4201 continue;
4203 goto finish_pcrel;
4205 finish_pcrel:
4206 /* Make pc-relative. */
4207 value -= (input_section->output_section->vma
4208 + input_section->output_offset
4209 + rel->r_offset) & ~ (bfd_vma) 0x3;
4210 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4211 break;
4213 case R_IA64_SEGREL32MSB:
4214 case R_IA64_SEGREL32LSB:
4215 case R_IA64_SEGREL64MSB:
4216 case R_IA64_SEGREL64LSB:
4217 if (r_symndx == 0)
4219 /* If the input section was discarded from the output, then
4220 do nothing. */
4221 r = bfd_reloc_ok;
4223 else
4225 struct elf_segment_map *m;
4226 Elf_Internal_Phdr *p;
4228 /* Find the segment that contains the output_section. */
4229 for (m = elf_tdata (output_bfd)->segment_map,
4230 p = elf_tdata (output_bfd)->phdr;
4231 m != NULL;
4232 m = m->next, p++)
4234 int i;
4235 for (i = m->count - 1; i >= 0; i--)
4236 if (m->sections[i] == input_section->output_section)
4237 break;
4238 if (i >= 0)
4239 break;
4242 if (m == NULL)
4244 r = bfd_reloc_notsupported;
4246 else
4248 /* The VMA of the segment is the vaddr of the associated
4249 program header. */
4250 if (value > p->p_vaddr)
4251 value -= p->p_vaddr;
4252 else
4253 value = 0;
4254 r = elfNN_ia64_install_value (output_bfd, hit_addr, value,
4255 r_type);
4257 break;
4260 case R_IA64_SECREL32MSB:
4261 case R_IA64_SECREL32LSB:
4262 case R_IA64_SECREL64MSB:
4263 case R_IA64_SECREL64LSB:
4264 /* Make output-section relative. */
4265 if (value > input_section->output_section->vma)
4266 value -= input_section->output_section->vma;
4267 else
4268 value = 0;
4269 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4270 break;
4272 case R_IA64_IPLTMSB:
4273 case R_IA64_IPLTLSB:
4274 /* Install a dynamic relocation for this reloc. */
4275 if ((dynamic_symbol_p || info->shared)
4276 && (input_section->flags & SEC_ALLOC) != 0)
4278 BFD_ASSERT (srel != NULL);
4280 /* If we don't need dynamic symbol lookup, install two
4281 RELATIVE relocations. */
4282 if (!dynamic_symbol_p)
4284 unsigned int dyn_r_type;
4286 if (r_type == R_IA64_IPLTMSB)
4287 dyn_r_type = R_IA64_REL64MSB;
4288 else
4289 dyn_r_type = R_IA64_REL64LSB;
4291 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4292 input_section,
4293 srel, rel->r_offset,
4294 dyn_r_type, 0, value);
4295 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4296 input_section,
4297 srel, rel->r_offset + 8,
4298 dyn_r_type, 0, gp_val);
4300 else
4301 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4302 srel, rel->r_offset, r_type,
4303 h->dynindx, rel->r_addend);
4306 if (r_type == R_IA64_IPLTMSB)
4307 r_type = R_IA64_DIR64MSB;
4308 else
4309 r_type = R_IA64_DIR64LSB;
4310 elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4311 r = elfNN_ia64_install_value (output_bfd, hit_addr + 8, gp_val,
4312 r_type);
4313 break;
4315 case R_IA64_TPREL14:
4316 case R_IA64_TPREL22:
4317 case R_IA64_TPREL64I:
4318 value -= elfNN_ia64_tprel_base (info);
4319 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4320 break;
4322 case R_IA64_DTPREL14:
4323 case R_IA64_DTPREL22:
4324 case R_IA64_DTPREL64I:
4325 case R_IA64_DTPREL64LSB:
4326 case R_IA64_DTPREL64MSB:
4327 value -= elfNN_ia64_dtprel_base (info);
4328 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4329 break;
4331 case R_IA64_LTOFF_TPREL22:
4332 case R_IA64_LTOFF_DTPMOD22:
4333 case R_IA64_LTOFF_DTPREL22:
4335 int got_r_type;
4336 long dynindx = h ? h->dynindx : -1;
4337 bfd_vma r_addend = rel->r_addend;
4339 switch (r_type)
4341 default:
4342 case R_IA64_LTOFF_TPREL22:
4343 if (!dynamic_symbol_p)
4345 if (!info->shared)
4346 value -= elfNN_ia64_tprel_base (info);
4347 else
4349 r_addend += value - elfNN_ia64_dtprel_base (info);
4350 dynindx = 0;
4353 got_r_type = R_IA64_TPREL64LSB;
4354 break;
4355 case R_IA64_LTOFF_DTPMOD22:
4356 if (!dynamic_symbol_p && !info->shared)
4357 value = 1;
4358 got_r_type = R_IA64_DTPMOD64LSB;
4359 break;
4360 case R_IA64_LTOFF_DTPREL22:
4361 if (!dynamic_symbol_p)
4362 value -= elfNN_ia64_dtprel_base (info);
4363 got_r_type = R_IA64_DTPREL64LSB;
4364 break;
4366 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4367 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4368 value, got_r_type);
4369 value -= gp_val;
4370 r = elfNN_ia64_install_value (output_bfd, hit_addr, value,
4371 r_type);
4373 break;
4375 default:
4376 r = bfd_reloc_notsupported;
4377 break;
4380 switch (r)
4382 case bfd_reloc_ok:
4383 break;
4385 case bfd_reloc_undefined:
4386 /* This can happen for global table relative relocs if
4387 __gp is undefined. This is a panic situation so we
4388 don't try to continue. */
4389 (*info->callbacks->undefined_symbol)
4390 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4391 return FALSE;
4393 case bfd_reloc_notsupported:
4395 const char *name;
4397 if (h)
4398 name = h->root.root.string;
4399 else
4401 name = bfd_elf_string_from_elf_section (input_bfd,
4402 symtab_hdr->sh_link,
4403 sym->st_name);
4404 if (name == NULL)
4405 return FALSE;
4406 if (*name == '\0')
4407 name = bfd_section_name (input_bfd, input_section);
4409 if (!(*info->callbacks->warning) (info, _("unsupported reloc"),
4410 name, input_bfd,
4411 input_section, rel->r_offset))
4412 return FALSE;
4413 ret_val = FALSE;
4415 break;
4417 case bfd_reloc_dangerous:
4418 case bfd_reloc_outofrange:
4419 case bfd_reloc_overflow:
4420 default:
4422 const char *name;
4424 if (h)
4425 name = h->root.root.string;
4426 else
4428 name = bfd_elf_string_from_elf_section (input_bfd,
4429 symtab_hdr->sh_link,
4430 sym->st_name);
4431 if (name == NULL)
4432 return FALSE;
4433 if (*name == '\0')
4434 name = bfd_section_name (input_bfd, input_section);
4436 if (!(*info->callbacks->reloc_overflow) (info, name,
4437 howto->name,
4438 (bfd_vma) 0,
4439 input_bfd,
4440 input_section,
4441 rel->r_offset))
4442 return FALSE;
4443 ret_val = FALSE;
4445 break;
4449 return ret_val;
4452 static bfd_boolean
4453 elfNN_ia64_finish_dynamic_symbol (output_bfd, info, h, sym)
4454 bfd *output_bfd;
4455 struct bfd_link_info *info;
4456 struct elf_link_hash_entry *h;
4457 Elf_Internal_Sym *sym;
4459 struct elfNN_ia64_link_hash_table *ia64_info;
4460 struct elfNN_ia64_dyn_sym_info *dyn_i;
4462 ia64_info = elfNN_ia64_hash_table (info);
4463 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4465 /* Fill in the PLT data, if required. */
4466 if (dyn_i && dyn_i->want_plt)
4468 Elf_Internal_Rela outrel;
4469 bfd_byte *loc;
4470 asection *plt_sec;
4471 bfd_vma plt_addr, pltoff_addr, gp_val, index;
4473 gp_val = _bfd_get_gp_value (output_bfd);
4475 /* Initialize the minimal PLT entry. */
4477 index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4478 plt_sec = ia64_info->plt_sec;
4479 loc = plt_sec->contents + dyn_i->plt_offset;
4481 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4482 elfNN_ia64_install_value (output_bfd, loc, index, R_IA64_IMM22);
4483 elfNN_ia64_install_value (output_bfd, loc+2, -dyn_i->plt_offset,
4484 R_IA64_PCREL21B);
4486 plt_addr = (plt_sec->output_section->vma
4487 + plt_sec->output_offset
4488 + dyn_i->plt_offset);
4489 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4491 /* Initialize the FULL PLT entry, if needed. */
4492 if (dyn_i->want_plt2)
4494 loc = plt_sec->contents + dyn_i->plt2_offset;
4496 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4497 elfNN_ia64_install_value (output_bfd, loc, pltoff_addr - gp_val,
4498 R_IA64_IMM22);
4500 /* Mark the symbol as undefined, rather than as defined in the
4501 plt section. Leave the value alone. */
4502 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4503 first place. But perhaps elflink.h did some for us. */
4504 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4505 sym->st_shndx = SHN_UNDEF;
4508 /* Create the dynamic relocation. */
4509 outrel.r_offset = pltoff_addr;
4510 if (bfd_little_endian (output_bfd))
4511 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4512 else
4513 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4514 outrel.r_addend = 0;
4516 /* This is fun. In the .IA_64.pltoff section, we've got entries
4517 that correspond both to real PLT entries, and those that
4518 happened to resolve to local symbols but need to be created
4519 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4520 relocations for the real PLT should come at the end of the
4521 section, so that they can be indexed by plt entry at runtime.
4523 We emitted all of the relocations for the non-PLT @pltoff
4524 entries during relocate_section. So we can consider the
4525 existing sec->reloc_count to be the base of the array of
4526 PLT relocations. */
4528 loc = ia64_info->rel_pltoff_sec->contents;
4529 loc += ((ia64_info->rel_pltoff_sec->reloc_count + index)
4530 * sizeof (ElfNN_External_Rela));
4531 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4534 /* Mark some specially defined symbols as absolute. */
4535 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4536 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
4537 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
4538 sym->st_shndx = SHN_ABS;
4540 return TRUE;
4543 static bfd_boolean
4544 elfNN_ia64_finish_dynamic_sections (abfd, info)
4545 bfd *abfd;
4546 struct bfd_link_info *info;
4548 struct elfNN_ia64_link_hash_table *ia64_info;
4549 bfd *dynobj;
4551 ia64_info = elfNN_ia64_hash_table (info);
4552 dynobj = ia64_info->root.dynobj;
4554 if (elf_hash_table (info)->dynamic_sections_created)
4556 ElfNN_External_Dyn *dyncon, *dynconend;
4557 asection *sdyn, *sgotplt;
4558 bfd_vma gp_val;
4560 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4561 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
4562 BFD_ASSERT (sdyn != NULL);
4563 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4564 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4566 gp_val = _bfd_get_gp_value (abfd);
4568 for (; dyncon < dynconend; dyncon++)
4570 Elf_Internal_Dyn dyn;
4572 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4574 switch (dyn.d_tag)
4576 case DT_PLTGOT:
4577 dyn.d_un.d_ptr = gp_val;
4578 break;
4580 case DT_PLTRELSZ:
4581 dyn.d_un.d_val = (ia64_info->minplt_entries
4582 * sizeof (ElfNN_External_Rela));
4583 break;
4585 case DT_JMPREL:
4586 /* See the comment above in finish_dynamic_symbol. */
4587 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4588 + ia64_info->rel_pltoff_sec->output_offset
4589 + (ia64_info->rel_pltoff_sec->reloc_count
4590 * sizeof (ElfNN_External_Rela)));
4591 break;
4593 case DT_IA_64_PLT_RESERVE:
4594 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4595 + sgotplt->output_offset);
4596 break;
4598 case DT_RELASZ:
4599 /* Do not have RELASZ include JMPREL. This makes things
4600 easier on ld.so. This is not what the rest of BFD set up. */
4601 dyn.d_un.d_val -= (ia64_info->minplt_entries
4602 * sizeof (ElfNN_External_Rela));
4603 break;
4606 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4609 /* Initialize the PLT0 entry. */
4610 if (ia64_info->plt_sec)
4612 bfd_byte *loc = ia64_info->plt_sec->contents;
4613 bfd_vma pltres;
4615 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4617 pltres = (sgotplt->output_section->vma
4618 + sgotplt->output_offset
4619 - gp_val);
4621 elfNN_ia64_install_value (abfd, loc+1, pltres, R_IA64_GPREL22);
4625 return TRUE;
4628 /* ELF file flag handling: */
4630 /* Function to keep IA-64 specific file flags. */
4631 static bfd_boolean
4632 elfNN_ia64_set_private_flags (abfd, flags)
4633 bfd *abfd;
4634 flagword flags;
4636 BFD_ASSERT (!elf_flags_init (abfd)
4637 || elf_elfheader (abfd)->e_flags == flags);
4639 elf_elfheader (abfd)->e_flags = flags;
4640 elf_flags_init (abfd) = TRUE;
4641 return TRUE;
4644 /* Merge backend specific data from an object file to the output
4645 object file when linking. */
4646 static bfd_boolean
4647 elfNN_ia64_merge_private_bfd_data (ibfd, obfd)
4648 bfd *ibfd, *obfd;
4650 flagword out_flags;
4651 flagword in_flags;
4652 bfd_boolean ok = TRUE;
4654 /* Don't even pretend to support mixed-format linking. */
4655 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4656 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4657 return FALSE;
4659 in_flags = elf_elfheader (ibfd)->e_flags;
4660 out_flags = elf_elfheader (obfd)->e_flags;
4662 if (! elf_flags_init (obfd))
4664 elf_flags_init (obfd) = TRUE;
4665 elf_elfheader (obfd)->e_flags = in_flags;
4667 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4668 && bfd_get_arch_info (obfd)->the_default)
4670 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4671 bfd_get_mach (ibfd));
4674 return TRUE;
4677 /* Check flag compatibility. */
4678 if (in_flags == out_flags)
4679 return TRUE;
4681 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4682 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4683 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4685 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4687 (*_bfd_error_handler)
4688 (_("%s: linking trap-on-NULL-dereference with non-trapping files"),
4689 bfd_archive_filename (ibfd));
4691 bfd_set_error (bfd_error_bad_value);
4692 ok = FALSE;
4694 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4696 (*_bfd_error_handler)
4697 (_("%s: linking big-endian files with little-endian files"),
4698 bfd_archive_filename (ibfd));
4700 bfd_set_error (bfd_error_bad_value);
4701 ok = FALSE;
4703 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4705 (*_bfd_error_handler)
4706 (_("%s: linking 64-bit files with 32-bit files"),
4707 bfd_archive_filename (ibfd));
4709 bfd_set_error (bfd_error_bad_value);
4710 ok = FALSE;
4712 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4714 (*_bfd_error_handler)
4715 (_("%s: linking constant-gp files with non-constant-gp files"),
4716 bfd_archive_filename (ibfd));
4718 bfd_set_error (bfd_error_bad_value);
4719 ok = FALSE;
4721 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4722 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4724 (*_bfd_error_handler)
4725 (_("%s: linking auto-pic files with non-auto-pic files"),
4726 bfd_archive_filename (ibfd));
4728 bfd_set_error (bfd_error_bad_value);
4729 ok = FALSE;
4732 return ok;
4735 static bfd_boolean
4736 elfNN_ia64_print_private_bfd_data (abfd, ptr)
4737 bfd *abfd;
4738 PTR ptr;
4740 FILE *file = (FILE *) ptr;
4741 flagword flags = elf_elfheader (abfd)->e_flags;
4743 BFD_ASSERT (abfd != NULL && ptr != NULL);
4745 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4746 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4747 (flags & EF_IA_64_EXT) ? "EXT, " : "",
4748 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4749 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4750 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4751 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4752 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4753 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4755 _bfd_elf_print_private_bfd_data (abfd, ptr);
4756 return TRUE;
4759 static enum elf_reloc_type_class
4760 elfNN_ia64_reloc_type_class (rela)
4761 const Elf_Internal_Rela *rela;
4763 switch ((int) ELFNN_R_TYPE (rela->r_info))
4765 case R_IA64_REL32MSB:
4766 case R_IA64_REL32LSB:
4767 case R_IA64_REL64MSB:
4768 case R_IA64_REL64LSB:
4769 return reloc_class_relative;
4770 case R_IA64_IPLTMSB:
4771 case R_IA64_IPLTLSB:
4772 return reloc_class_plt;
4773 case R_IA64_COPY:
4774 return reloc_class_copy;
4775 default:
4776 return reloc_class_normal;
4780 static struct bfd_elf_special_section const elfNN_ia64_special_sections[]=
4782 { ".sbss", 5, -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4783 { ".sdata", 6, -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4784 { NULL, 0, 0, 0, 0 }
4787 static bfd_boolean
4788 elfNN_ia64_hpux_vec (const bfd_target *vec)
4790 extern const bfd_target bfd_elfNN_ia64_hpux_big_vec;
4791 return (vec == & bfd_elfNN_ia64_hpux_big_vec);
4794 static void
4795 elfNN_hpux_post_process_headers (abfd, info)
4796 bfd *abfd;
4797 struct bfd_link_info *info ATTRIBUTE_UNUSED;
4799 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4801 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
4802 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4805 bfd_boolean
4806 elfNN_hpux_backend_section_from_bfd_section (abfd, sec, retval)
4807 bfd *abfd ATTRIBUTE_UNUSED;
4808 asection *sec;
4809 int *retval;
4811 if (bfd_is_com_section (sec))
4813 *retval = SHN_IA_64_ANSI_COMMON;
4814 return TRUE;
4816 return FALSE;
4819 static void
4820 elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4821 asymbol *asym)
4823 elf_symbol_type *elfsym = (elf_symbol_type *) asym;;
4825 switch (elfsym->internal_elf_sym.st_shndx)
4827 case SHN_IA_64_ANSI_COMMON:
4828 asym->section = bfd_com_section_ptr;
4829 asym->value = elfsym->internal_elf_sym.st_size;
4830 asym->flags &= ~BSF_GLOBAL;
4831 break;
4836 #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec
4837 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4838 #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec
4839 #define TARGET_BIG_NAME "elfNN-ia64-big"
4840 #define ELF_ARCH bfd_arch_ia64
4841 #define ELF_MACHINE_CODE EM_IA_64
4842 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4843 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4844 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4846 #define elf_backend_section_from_shdr \
4847 elfNN_ia64_section_from_shdr
4848 #define elf_backend_section_flags \
4849 elfNN_ia64_section_flags
4850 #define elf_backend_fake_sections \
4851 elfNN_ia64_fake_sections
4852 #define elf_backend_final_write_processing \
4853 elfNN_ia64_final_write_processing
4854 #define elf_backend_add_symbol_hook \
4855 elfNN_ia64_add_symbol_hook
4856 #define elf_backend_additional_program_headers \
4857 elfNN_ia64_additional_program_headers
4858 #define elf_backend_modify_segment_map \
4859 elfNN_ia64_modify_segment_map
4860 #define elf_info_to_howto \
4861 elfNN_ia64_info_to_howto
4863 #define bfd_elfNN_bfd_reloc_type_lookup \
4864 elfNN_ia64_reloc_type_lookup
4865 #define bfd_elfNN_bfd_is_local_label_name \
4866 elfNN_ia64_is_local_label_name
4867 #define bfd_elfNN_bfd_relax_section \
4868 elfNN_ia64_relax_section
4870 /* Stuff for the BFD linker: */
4871 #define bfd_elfNN_bfd_link_hash_table_create \
4872 elfNN_ia64_hash_table_create
4873 #define bfd_elfNN_bfd_link_hash_table_free \
4874 elfNN_ia64_hash_table_free
4875 #define elf_backend_create_dynamic_sections \
4876 elfNN_ia64_create_dynamic_sections
4877 #define elf_backend_check_relocs \
4878 elfNN_ia64_check_relocs
4879 #define elf_backend_adjust_dynamic_symbol \
4880 elfNN_ia64_adjust_dynamic_symbol
4881 #define elf_backend_size_dynamic_sections \
4882 elfNN_ia64_size_dynamic_sections
4883 #define elf_backend_relocate_section \
4884 elfNN_ia64_relocate_section
4885 #define elf_backend_finish_dynamic_symbol \
4886 elfNN_ia64_finish_dynamic_symbol
4887 #define elf_backend_finish_dynamic_sections \
4888 elfNN_ia64_finish_dynamic_sections
4889 #define bfd_elfNN_bfd_final_link \
4890 elfNN_ia64_final_link
4892 #define bfd_elfNN_bfd_merge_private_bfd_data \
4893 elfNN_ia64_merge_private_bfd_data
4894 #define bfd_elfNN_bfd_set_private_flags \
4895 elfNN_ia64_set_private_flags
4896 #define bfd_elfNN_bfd_print_private_bfd_data \
4897 elfNN_ia64_print_private_bfd_data
4899 #define elf_backend_plt_readonly 1
4900 #define elf_backend_want_plt_sym 0
4901 #define elf_backend_plt_alignment 5
4902 #define elf_backend_got_header_size 0
4903 #define elf_backend_want_got_plt 1
4904 #define elf_backend_may_use_rel_p 1
4905 #define elf_backend_may_use_rela_p 1
4906 #define elf_backend_default_use_rela_p 1
4907 #define elf_backend_want_dynbss 0
4908 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
4909 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
4910 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
4911 #define elf_backend_rela_normal 1
4912 #define elf_backend_special_sections elfNN_ia64_special_sections
4914 #include "elfNN-target.h"
4916 /* HPUX-specific vectors. */
4918 #undef TARGET_LITTLE_SYM
4919 #undef TARGET_LITTLE_NAME
4920 #undef TARGET_BIG_SYM
4921 #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec
4922 #undef TARGET_BIG_NAME
4923 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
4925 /* These are HP-UX specific functions. */
4927 #undef elf_backend_post_process_headers
4928 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
4930 #undef elf_backend_section_from_bfd_section
4931 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
4933 #undef elf_backend_symbol_processing
4934 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
4936 #undef elf_backend_want_p_paddr_set_to_zero
4937 #define elf_backend_want_p_paddr_set_to_zero 1
4939 #undef ELF_MAXPAGESIZE
4940 #define ELF_MAXPAGESIZE 0x1000 /* 1K */
4942 #undef elfNN_bed
4943 #define elfNN_bed elfNN_ia64_hpux_bed
4945 #include "elfNN-target.h"
4947 #undef elf_backend_want_p_paddr_set_to_zero