Do not ignore sections without the LOAD flag when disassemble_all is true.
[binutils.git] / bfd / elfxx-ia64.c
blob8d786d2c06404b467b4f1978b9ab908b38b36f71
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"
28 /* THE RULES for all the stuff the linker creates --
30 GOT Entries created in response to LTOFF or LTOFF_FPTR
31 relocations. Dynamic relocs created for dynamic
32 symbols in an application; REL relocs for locals
33 in a shared library.
35 FPTR The canonical function descriptor. Created for local
36 symbols in applications. Descriptors for dynamic symbols
37 and local symbols in shared libraries are created by
38 ld.so. Thus there are no dynamic relocs against these
39 objects. The FPTR relocs for such _are_ passed through
40 to the dynamic relocation tables.
42 FULL_PLT Created for a PCREL21B relocation against a dynamic symbol.
43 Requires the creation of a PLTOFF entry. This does not
44 require any dynamic relocations.
46 PLTOFF Created by PLTOFF relocations. For local symbols, this
47 is an alternate function descriptor, and in shared libraries
48 requires two REL relocations. Note that this cannot be
49 transformed into an FPTR relocation, since it must be in
50 range of the GP. For dynamic symbols, this is a function
51 descriptor for a MIN_PLT entry, and requires one IPLT reloc.
53 MIN_PLT Created by PLTOFF entries against dynamic symbols. This
54 does not reqire dynamic relocations. */
56 #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
58 typedef struct bfd_hash_entry *(*new_hash_entry_func)
59 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
61 /* In dynamically (linker-) created sections, we generally need to keep track
62 of the place a symbol or expression got allocated to. This is done via hash
63 tables that store entries of the following type. */
65 struct elfNN_ia64_dyn_sym_info
67 /* The addend for which this entry is relevant. */
68 bfd_vma addend;
70 /* Next addend in the list. */
71 struct elfNN_ia64_dyn_sym_info *next;
73 bfd_vma got_offset;
74 bfd_vma fptr_offset;
75 bfd_vma pltoff_offset;
76 bfd_vma plt_offset;
77 bfd_vma plt2_offset;
78 bfd_vma tprel_offset;
79 bfd_vma dtpmod_offset;
80 bfd_vma dtprel_offset;
82 /* The symbol table entry, if any, that this was derrived from. */
83 struct elf_link_hash_entry *h;
85 /* Used to count non-got, non-plt relocations for delayed sizing
86 of relocation sections. */
87 struct elfNN_ia64_dyn_reloc_entry
89 struct elfNN_ia64_dyn_reloc_entry *next;
90 asection *srel;
91 int type;
92 int count;
93 } *reloc_entries;
95 /* TRUE when the section contents have been updated. */
96 unsigned got_done : 1;
97 unsigned fptr_done : 1;
98 unsigned pltoff_done : 1;
99 unsigned tprel_done : 1;
100 unsigned dtpmod_done : 1;
101 unsigned dtprel_done : 1;
103 /* TRUE for the different kinds of linker data we want created. */
104 unsigned want_got : 1;
105 unsigned want_gotx : 1;
106 unsigned want_fptr : 1;
107 unsigned want_ltoff_fptr : 1;
108 unsigned want_plt : 1;
109 unsigned want_plt2 : 1;
110 unsigned want_pltoff : 1;
111 unsigned want_tprel : 1;
112 unsigned want_dtpmod : 1;
113 unsigned want_dtprel : 1;
116 struct elfNN_ia64_local_hash_entry
118 struct bfd_hash_entry root;
119 struct elfNN_ia64_dyn_sym_info *info;
121 /* TRUE if this hash entry's addends was translated for
122 SHF_MERGE optimization. */
123 unsigned sec_merge_done : 1;
126 struct elfNN_ia64_local_hash_table
128 struct bfd_hash_table root;
129 /* No additional fields for now. */
132 struct elfNN_ia64_link_hash_entry
134 struct elf_link_hash_entry root;
135 struct elfNN_ia64_dyn_sym_info *info;
138 struct elfNN_ia64_link_hash_table
140 /* The main hash table. */
141 struct elf_link_hash_table root;
143 asection *got_sec; /* the linkage table section (or NULL) */
144 asection *rel_got_sec; /* dynamic relocation section for same */
145 asection *fptr_sec; /* function descriptor table (or NULL) */
146 asection *rel_fptr_sec; /* dynamic relocation section for same */
147 asection *plt_sec; /* the primary plt section (or NULL) */
148 asection *pltoff_sec; /* private descriptors for plt (or NULL) */
149 asection *rel_pltoff_sec; /* dynamic relocation section for same */
151 bfd_size_type minplt_entries; /* number of minplt entries */
152 unsigned reltext : 1; /* are there relocs against readonly sections? */
153 unsigned self_dtpmod_done : 1;/* has self DTPMOD entry been finished? */
154 bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry */
156 struct elfNN_ia64_local_hash_table loc_hash_table;
159 struct elfNN_ia64_allocate_data
161 struct bfd_link_info *info;
162 bfd_size_type ofs;
165 #define elfNN_ia64_hash_table(p) \
166 ((struct elfNN_ia64_link_hash_table *) ((p)->hash))
168 static bfd_reloc_status_type elfNN_ia64_reloc
169 PARAMS ((bfd *abfd, arelent *reloc, asymbol *sym, PTR data,
170 asection *input_section, bfd *output_bfd, char **error_message));
171 static reloc_howto_type * lookup_howto
172 PARAMS ((unsigned int rtype));
173 static reloc_howto_type *elfNN_ia64_reloc_type_lookup
174 PARAMS ((bfd *abfd, bfd_reloc_code_real_type bfd_code));
175 static void elfNN_ia64_info_to_howto
176 PARAMS ((bfd *abfd, arelent *bfd_reloc, Elf_Internal_Rela *elf_reloc));
177 static bfd_boolean elfNN_ia64_relax_section
178 PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info,
179 bfd_boolean *again));
180 static void elfNN_ia64_relax_ldxmov
181 PARAMS((bfd *abfd, bfd_byte *contents, bfd_vma off));
182 static bfd_boolean is_unwind_section_name
183 PARAMS ((bfd *abfd, const char *));
184 static bfd_boolean elfNN_ia64_section_from_shdr
185 PARAMS ((bfd *, Elf_Internal_Shdr *, const char *));
186 static bfd_boolean elfNN_ia64_section_flags
187 PARAMS ((flagword *, Elf_Internal_Shdr *));
188 static bfd_boolean elfNN_ia64_fake_sections
189 PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec));
190 static void elfNN_ia64_final_write_processing
191 PARAMS ((bfd *abfd, bfd_boolean linker));
192 static bfd_boolean elfNN_ia64_add_symbol_hook
193 PARAMS ((bfd *abfd, struct bfd_link_info *info, const Elf_Internal_Sym *sym,
194 const char **namep, flagword *flagsp, asection **secp,
195 bfd_vma *valp));
196 static int elfNN_ia64_additional_program_headers
197 PARAMS ((bfd *abfd));
198 static bfd_boolean elfNN_ia64_modify_segment_map
199 PARAMS ((bfd *));
200 static bfd_boolean elfNN_ia64_is_local_label_name
201 PARAMS ((bfd *abfd, const char *name));
202 static bfd_boolean elfNN_ia64_dynamic_symbol_p
203 PARAMS ((struct elf_link_hash_entry *h, struct bfd_link_info *info, int));
204 static bfd_boolean elfNN_ia64_local_hash_table_init
205 PARAMS ((struct elfNN_ia64_local_hash_table *ht, bfd *abfd,
206 new_hash_entry_func new));
207 static struct bfd_hash_entry *elfNN_ia64_new_loc_hash_entry
208 PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
209 const char *string));
210 static struct bfd_hash_entry *elfNN_ia64_new_elf_hash_entry
211 PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
212 const char *string));
213 static void elfNN_ia64_hash_copy_indirect
214 PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
215 struct elf_link_hash_entry *));
216 static void elfNN_ia64_hash_hide_symbol
217 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
218 static struct bfd_link_hash_table *elfNN_ia64_hash_table_create
219 PARAMS ((bfd *abfd));
220 static struct elfNN_ia64_local_hash_entry *elfNN_ia64_local_hash_lookup
221 PARAMS ((struct elfNN_ia64_local_hash_table *table, const char *string,
222 bfd_boolean create, bfd_boolean copy));
223 static bfd_boolean elfNN_ia64_global_dyn_sym_thunk
224 PARAMS ((struct bfd_hash_entry *, PTR));
225 static bfd_boolean elfNN_ia64_local_dyn_sym_thunk
226 PARAMS ((struct bfd_hash_entry *, PTR));
227 static void elfNN_ia64_dyn_sym_traverse
228 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
229 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR),
230 PTR info));
231 static bfd_boolean elfNN_ia64_create_dynamic_sections
232 PARAMS ((bfd *abfd, struct bfd_link_info *info));
233 static struct elfNN_ia64_local_hash_entry * get_local_sym_hash
234 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
235 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create));
236 static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
237 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
238 struct elf_link_hash_entry *h,
239 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create));
240 static asection *get_got
241 PARAMS ((bfd *abfd, struct bfd_link_info *info,
242 struct elfNN_ia64_link_hash_table *ia64_info));
243 static asection *get_fptr
244 PARAMS ((bfd *abfd, struct bfd_link_info *info,
245 struct elfNN_ia64_link_hash_table *ia64_info));
246 static asection *get_pltoff
247 PARAMS ((bfd *abfd, struct bfd_link_info *info,
248 struct elfNN_ia64_link_hash_table *ia64_info));
249 static asection *get_reloc_section
250 PARAMS ((bfd *abfd, struct elfNN_ia64_link_hash_table *ia64_info,
251 asection *sec, bfd_boolean create));
252 static bfd_boolean count_dyn_reloc
253 PARAMS ((bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
254 asection *srel, int type));
255 static bfd_boolean elfNN_ia64_check_relocs
256 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
257 const Elf_Internal_Rela *relocs));
258 static bfd_boolean elfNN_ia64_adjust_dynamic_symbol
259 PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
260 static long global_sym_index
261 PARAMS ((struct elf_link_hash_entry *h));
262 static bfd_boolean allocate_fptr
263 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
264 static bfd_boolean allocate_global_data_got
265 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
266 static bfd_boolean allocate_global_fptr_got
267 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
268 static bfd_boolean allocate_local_got
269 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
270 static bfd_boolean allocate_pltoff_entries
271 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
272 static bfd_boolean allocate_plt_entries
273 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
274 static bfd_boolean allocate_plt2_entries
275 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
276 static bfd_boolean allocate_dynrel_entries
277 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
278 static bfd_boolean elfNN_ia64_size_dynamic_sections
279 PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
280 static bfd_reloc_status_type elfNN_ia64_install_value
281 PARAMS ((bfd *abfd, bfd_byte *hit_addr, bfd_vma val, unsigned int r_type));
282 static void elfNN_ia64_install_dyn_reloc
283 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
284 asection *srel, bfd_vma offset, unsigned int type,
285 long dynindx, bfd_vma addend));
286 static bfd_vma set_got_entry
287 PARAMS ((bfd *abfd, struct bfd_link_info *info,
288 struct elfNN_ia64_dyn_sym_info *dyn_i, long dynindx,
289 bfd_vma addend, bfd_vma value, unsigned int dyn_r_type));
290 static bfd_vma set_fptr_entry
291 PARAMS ((bfd *abfd, struct bfd_link_info *info,
292 struct elfNN_ia64_dyn_sym_info *dyn_i,
293 bfd_vma value));
294 static bfd_vma set_pltoff_entry
295 PARAMS ((bfd *abfd, struct bfd_link_info *info,
296 struct elfNN_ia64_dyn_sym_info *dyn_i,
297 bfd_vma value, bfd_boolean));
298 static bfd_vma elfNN_ia64_tprel_base
299 PARAMS ((struct bfd_link_info *info));
300 static bfd_vma elfNN_ia64_dtprel_base
301 PARAMS ((struct bfd_link_info *info));
302 static int elfNN_ia64_unwind_entry_compare
303 PARAMS ((const PTR, const PTR));
304 static bfd_boolean elfNN_ia64_choose_gp
305 PARAMS ((bfd *abfd, struct bfd_link_info *info));
306 static bfd_boolean elfNN_ia64_final_link
307 PARAMS ((bfd *abfd, struct bfd_link_info *info));
308 static bfd_boolean elfNN_ia64_relocate_section
309 PARAMS ((bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd,
310 asection *input_section, bfd_byte *contents,
311 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
312 asection **local_sections));
313 static bfd_boolean elfNN_ia64_finish_dynamic_symbol
314 PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
315 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
316 static bfd_boolean elfNN_ia64_finish_dynamic_sections
317 PARAMS ((bfd *abfd, struct bfd_link_info *info));
318 static bfd_boolean elfNN_ia64_set_private_flags
319 PARAMS ((bfd *abfd, flagword flags));
320 static bfd_boolean elfNN_ia64_merge_private_bfd_data
321 PARAMS ((bfd *ibfd, bfd *obfd));
322 static bfd_boolean elfNN_ia64_print_private_bfd_data
323 PARAMS ((bfd *abfd, PTR ptr));
324 static enum elf_reloc_type_class elfNN_ia64_reloc_type_class
325 PARAMS ((const Elf_Internal_Rela *));
326 static bfd_boolean elfNN_ia64_hpux_vec
327 PARAMS ((const bfd_target *vec));
328 static void elfNN_hpux_post_process_headers
329 PARAMS ((bfd *abfd, struct bfd_link_info *info));
330 bfd_boolean elfNN_hpux_backend_section_from_bfd_section
331 PARAMS ((bfd *abfd, asection *sec, int *retval));
333 /* ia64-specific relocation. */
335 /* Perform a relocation. Not much to do here as all the hard work is
336 done in elfNN_ia64_final_link_relocate. */
337 static bfd_reloc_status_type
338 elfNN_ia64_reloc (abfd, reloc, sym, data, input_section,
339 output_bfd, error_message)
340 bfd *abfd ATTRIBUTE_UNUSED;
341 arelent *reloc;
342 asymbol *sym ATTRIBUTE_UNUSED;
343 PTR data ATTRIBUTE_UNUSED;
344 asection *input_section;
345 bfd *output_bfd;
346 char **error_message;
348 if (output_bfd)
350 reloc->address += input_section->output_offset;
351 return bfd_reloc_ok;
354 if (input_section->flags & SEC_DEBUGGING)
355 return bfd_reloc_continue;
357 *error_message = "Unsupported call to elfNN_ia64_reloc";
358 return bfd_reloc_notsupported;
361 #define IA64_HOWTO(TYPE, NAME, SIZE, PCREL, IN) \
362 HOWTO (TYPE, 0, SIZE, 0, PCREL, 0, complain_overflow_signed, \
363 elfNN_ia64_reloc, NAME, FALSE, 0, -1, IN)
365 /* This table has to be sorted according to increasing number of the
366 TYPE field. */
367 static reloc_howto_type ia64_howto_table[] =
369 IA64_HOWTO (R_IA64_NONE, "NONE", 0, FALSE, TRUE),
371 IA64_HOWTO (R_IA64_IMM14, "IMM14", 0, FALSE, TRUE),
372 IA64_HOWTO (R_IA64_IMM22, "IMM22", 0, FALSE, TRUE),
373 IA64_HOWTO (R_IA64_IMM64, "IMM64", 0, FALSE, TRUE),
374 IA64_HOWTO (R_IA64_DIR32MSB, "DIR32MSB", 2, FALSE, TRUE),
375 IA64_HOWTO (R_IA64_DIR32LSB, "DIR32LSB", 2, FALSE, TRUE),
376 IA64_HOWTO (R_IA64_DIR64MSB, "DIR64MSB", 4, FALSE, TRUE),
377 IA64_HOWTO (R_IA64_DIR64LSB, "DIR64LSB", 4, FALSE, TRUE),
379 IA64_HOWTO (R_IA64_GPREL22, "GPREL22", 0, FALSE, TRUE),
380 IA64_HOWTO (R_IA64_GPREL64I, "GPREL64I", 0, FALSE, TRUE),
381 IA64_HOWTO (R_IA64_GPREL32MSB, "GPREL32MSB", 2, FALSE, TRUE),
382 IA64_HOWTO (R_IA64_GPREL32LSB, "GPREL32LSB", 2, FALSE, TRUE),
383 IA64_HOWTO (R_IA64_GPREL64MSB, "GPREL64MSB", 4, FALSE, TRUE),
384 IA64_HOWTO (R_IA64_GPREL64LSB, "GPREL64LSB", 4, FALSE, TRUE),
386 IA64_HOWTO (R_IA64_LTOFF22, "LTOFF22", 0, FALSE, TRUE),
387 IA64_HOWTO (R_IA64_LTOFF64I, "LTOFF64I", 0, FALSE, TRUE),
389 IA64_HOWTO (R_IA64_PLTOFF22, "PLTOFF22", 0, FALSE, TRUE),
390 IA64_HOWTO (R_IA64_PLTOFF64I, "PLTOFF64I", 0, FALSE, TRUE),
391 IA64_HOWTO (R_IA64_PLTOFF64MSB, "PLTOFF64MSB", 4, FALSE, TRUE),
392 IA64_HOWTO (R_IA64_PLTOFF64LSB, "PLTOFF64LSB", 4, FALSE, TRUE),
394 IA64_HOWTO (R_IA64_FPTR64I, "FPTR64I", 0, FALSE, TRUE),
395 IA64_HOWTO (R_IA64_FPTR32MSB, "FPTR32MSB", 2, FALSE, TRUE),
396 IA64_HOWTO (R_IA64_FPTR32LSB, "FPTR32LSB", 2, FALSE, TRUE),
397 IA64_HOWTO (R_IA64_FPTR64MSB, "FPTR64MSB", 4, FALSE, TRUE),
398 IA64_HOWTO (R_IA64_FPTR64LSB, "FPTR64LSB", 4, FALSE, TRUE),
400 IA64_HOWTO (R_IA64_PCREL60B, "PCREL60B", 0, TRUE, TRUE),
401 IA64_HOWTO (R_IA64_PCREL21B, "PCREL21B", 0, TRUE, TRUE),
402 IA64_HOWTO (R_IA64_PCREL21M, "PCREL21M", 0, TRUE, TRUE),
403 IA64_HOWTO (R_IA64_PCREL21F, "PCREL21F", 0, TRUE, TRUE),
404 IA64_HOWTO (R_IA64_PCREL32MSB, "PCREL32MSB", 2, TRUE, TRUE),
405 IA64_HOWTO (R_IA64_PCREL32LSB, "PCREL32LSB", 2, TRUE, TRUE),
406 IA64_HOWTO (R_IA64_PCREL64MSB, "PCREL64MSB", 4, TRUE, TRUE),
407 IA64_HOWTO (R_IA64_PCREL64LSB, "PCREL64LSB", 4, TRUE, TRUE),
409 IA64_HOWTO (R_IA64_LTOFF_FPTR22, "LTOFF_FPTR22", 0, FALSE, TRUE),
410 IA64_HOWTO (R_IA64_LTOFF_FPTR64I, "LTOFF_FPTR64I", 0, FALSE, TRUE),
411 IA64_HOWTO (R_IA64_LTOFF_FPTR32MSB, "LTOFF_FPTR32MSB", 2, FALSE, TRUE),
412 IA64_HOWTO (R_IA64_LTOFF_FPTR32LSB, "LTOFF_FPTR32LSB", 2, FALSE, TRUE),
413 IA64_HOWTO (R_IA64_LTOFF_FPTR64MSB, "LTOFF_FPTR64MSB", 4, FALSE, TRUE),
414 IA64_HOWTO (R_IA64_LTOFF_FPTR64LSB, "LTOFF_FPTR64LSB", 4, FALSE, TRUE),
416 IA64_HOWTO (R_IA64_SEGREL32MSB, "SEGREL32MSB", 2, FALSE, TRUE),
417 IA64_HOWTO (R_IA64_SEGREL32LSB, "SEGREL32LSB", 2, FALSE, TRUE),
418 IA64_HOWTO (R_IA64_SEGREL64MSB, "SEGREL64MSB", 4, FALSE, TRUE),
419 IA64_HOWTO (R_IA64_SEGREL64LSB, "SEGREL64LSB", 4, FALSE, TRUE),
421 IA64_HOWTO (R_IA64_SECREL32MSB, "SECREL32MSB", 2, FALSE, TRUE),
422 IA64_HOWTO (R_IA64_SECREL32LSB, "SECREL32LSB", 2, FALSE, TRUE),
423 IA64_HOWTO (R_IA64_SECREL64MSB, "SECREL64MSB", 4, FALSE, TRUE),
424 IA64_HOWTO (R_IA64_SECREL64LSB, "SECREL64LSB", 4, FALSE, TRUE),
426 IA64_HOWTO (R_IA64_REL32MSB, "REL32MSB", 2, FALSE, TRUE),
427 IA64_HOWTO (R_IA64_REL32LSB, "REL32LSB", 2, FALSE, TRUE),
428 IA64_HOWTO (R_IA64_REL64MSB, "REL64MSB", 4, FALSE, TRUE),
429 IA64_HOWTO (R_IA64_REL64LSB, "REL64LSB", 4, FALSE, TRUE),
431 IA64_HOWTO (R_IA64_LTV32MSB, "LTV32MSB", 2, FALSE, TRUE),
432 IA64_HOWTO (R_IA64_LTV32LSB, "LTV32LSB", 2, FALSE, TRUE),
433 IA64_HOWTO (R_IA64_LTV64MSB, "LTV64MSB", 4, FALSE, TRUE),
434 IA64_HOWTO (R_IA64_LTV64LSB, "LTV64LSB", 4, FALSE, TRUE),
436 IA64_HOWTO (R_IA64_PCREL21BI, "PCREL21BI", 0, TRUE, TRUE),
437 IA64_HOWTO (R_IA64_PCREL22, "PCREL22", 0, TRUE, TRUE),
438 IA64_HOWTO (R_IA64_PCREL64I, "PCREL64I", 0, TRUE, TRUE),
440 IA64_HOWTO (R_IA64_IPLTMSB, "IPLTMSB", 4, FALSE, TRUE),
441 IA64_HOWTO (R_IA64_IPLTLSB, "IPLTLSB", 4, FALSE, TRUE),
442 IA64_HOWTO (R_IA64_COPY, "COPY", 4, FALSE, TRUE),
443 IA64_HOWTO (R_IA64_LTOFF22X, "LTOFF22X", 0, FALSE, TRUE),
444 IA64_HOWTO (R_IA64_LDXMOV, "LDXMOV", 0, FALSE, TRUE),
446 IA64_HOWTO (R_IA64_TPREL14, "TPREL14", 0, FALSE, FALSE),
447 IA64_HOWTO (R_IA64_TPREL22, "TPREL22", 0, FALSE, FALSE),
448 IA64_HOWTO (R_IA64_TPREL64I, "TPREL64I", 0, FALSE, FALSE),
449 IA64_HOWTO (R_IA64_TPREL64MSB, "TPREL64MSB", 8, FALSE, FALSE),
450 IA64_HOWTO (R_IA64_TPREL64LSB, "TPREL64LSB", 8, FALSE, FALSE),
451 IA64_HOWTO (R_IA64_LTOFF_TPREL22, "LTOFF_TPREL22", 0, FALSE, FALSE),
453 IA64_HOWTO (R_IA64_DTPMOD64MSB, "TPREL64MSB", 8, FALSE, FALSE),
454 IA64_HOWTO (R_IA64_DTPMOD64LSB, "TPREL64LSB", 8, FALSE, FALSE),
455 IA64_HOWTO (R_IA64_LTOFF_DTPMOD22, "LTOFF_DTPMOD22", 0, FALSE, FALSE),
457 IA64_HOWTO (R_IA64_DTPREL14, "DTPREL14", 0, FALSE, FALSE),
458 IA64_HOWTO (R_IA64_DTPREL22, "DTPREL22", 0, FALSE, FALSE),
459 IA64_HOWTO (R_IA64_DTPREL64I, "DTPREL64I", 0, FALSE, FALSE),
460 IA64_HOWTO (R_IA64_DTPREL32MSB, "DTPREL32MSB", 4, FALSE, FALSE),
461 IA64_HOWTO (R_IA64_DTPREL32LSB, "DTPREL32LSB", 4, FALSE, FALSE),
462 IA64_HOWTO (R_IA64_DTPREL64MSB, "DTPREL64MSB", 8, FALSE, FALSE),
463 IA64_HOWTO (R_IA64_DTPREL64LSB, "DTPREL64LSB", 8, FALSE, FALSE),
464 IA64_HOWTO (R_IA64_LTOFF_DTPREL22, "LTOFF_DTPREL22", 0, FALSE, FALSE),
467 static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1];
469 /* Given a BFD reloc type, return the matching HOWTO structure. */
471 static reloc_howto_type *
472 lookup_howto (rtype)
473 unsigned int rtype;
475 static int inited = 0;
476 int i;
478 if (!inited)
480 inited = 1;
482 memset (elf_code_to_howto_index, 0xff, sizeof (elf_code_to_howto_index));
483 for (i = 0; i < NELEMS (ia64_howto_table); ++i)
484 elf_code_to_howto_index[ia64_howto_table[i].type] = i;
487 BFD_ASSERT (rtype <= R_IA64_MAX_RELOC_CODE);
488 i = elf_code_to_howto_index[rtype];
489 if (i >= NELEMS (ia64_howto_table))
490 return 0;
491 return ia64_howto_table + i;
494 static reloc_howto_type*
495 elfNN_ia64_reloc_type_lookup (abfd, bfd_code)
496 bfd *abfd ATTRIBUTE_UNUSED;
497 bfd_reloc_code_real_type bfd_code;
499 unsigned int rtype;
501 switch (bfd_code)
503 case BFD_RELOC_NONE: rtype = R_IA64_NONE; break;
505 case BFD_RELOC_IA64_IMM14: rtype = R_IA64_IMM14; break;
506 case BFD_RELOC_IA64_IMM22: rtype = R_IA64_IMM22; break;
507 case BFD_RELOC_IA64_IMM64: rtype = R_IA64_IMM64; break;
509 case BFD_RELOC_IA64_DIR32MSB: rtype = R_IA64_DIR32MSB; break;
510 case BFD_RELOC_IA64_DIR32LSB: rtype = R_IA64_DIR32LSB; break;
511 case BFD_RELOC_IA64_DIR64MSB: rtype = R_IA64_DIR64MSB; break;
512 case BFD_RELOC_IA64_DIR64LSB: rtype = R_IA64_DIR64LSB; break;
514 case BFD_RELOC_IA64_GPREL22: rtype = R_IA64_GPREL22; break;
515 case BFD_RELOC_IA64_GPREL64I: rtype = R_IA64_GPREL64I; break;
516 case BFD_RELOC_IA64_GPREL32MSB: rtype = R_IA64_GPREL32MSB; break;
517 case BFD_RELOC_IA64_GPREL32LSB: rtype = R_IA64_GPREL32LSB; break;
518 case BFD_RELOC_IA64_GPREL64MSB: rtype = R_IA64_GPREL64MSB; break;
519 case BFD_RELOC_IA64_GPREL64LSB: rtype = R_IA64_GPREL64LSB; break;
521 case BFD_RELOC_IA64_LTOFF22: rtype = R_IA64_LTOFF22; break;
522 case BFD_RELOC_IA64_LTOFF64I: rtype = R_IA64_LTOFF64I; break;
524 case BFD_RELOC_IA64_PLTOFF22: rtype = R_IA64_PLTOFF22; break;
525 case BFD_RELOC_IA64_PLTOFF64I: rtype = R_IA64_PLTOFF64I; break;
526 case BFD_RELOC_IA64_PLTOFF64MSB: rtype = R_IA64_PLTOFF64MSB; break;
527 case BFD_RELOC_IA64_PLTOFF64LSB: rtype = R_IA64_PLTOFF64LSB; break;
528 case BFD_RELOC_IA64_FPTR64I: rtype = R_IA64_FPTR64I; break;
529 case BFD_RELOC_IA64_FPTR32MSB: rtype = R_IA64_FPTR32MSB; break;
530 case BFD_RELOC_IA64_FPTR32LSB: rtype = R_IA64_FPTR32LSB; break;
531 case BFD_RELOC_IA64_FPTR64MSB: rtype = R_IA64_FPTR64MSB; break;
532 case BFD_RELOC_IA64_FPTR64LSB: rtype = R_IA64_FPTR64LSB; break;
534 case BFD_RELOC_IA64_PCREL21B: rtype = R_IA64_PCREL21B; break;
535 case BFD_RELOC_IA64_PCREL21BI: rtype = R_IA64_PCREL21BI; break;
536 case BFD_RELOC_IA64_PCREL21M: rtype = R_IA64_PCREL21M; break;
537 case BFD_RELOC_IA64_PCREL21F: rtype = R_IA64_PCREL21F; break;
538 case BFD_RELOC_IA64_PCREL22: rtype = R_IA64_PCREL22; break;
539 case BFD_RELOC_IA64_PCREL60B: rtype = R_IA64_PCREL60B; break;
540 case BFD_RELOC_IA64_PCREL64I: rtype = R_IA64_PCREL64I; break;
541 case BFD_RELOC_IA64_PCREL32MSB: rtype = R_IA64_PCREL32MSB; break;
542 case BFD_RELOC_IA64_PCREL32LSB: rtype = R_IA64_PCREL32LSB; break;
543 case BFD_RELOC_IA64_PCREL64MSB: rtype = R_IA64_PCREL64MSB; break;
544 case BFD_RELOC_IA64_PCREL64LSB: rtype = R_IA64_PCREL64LSB; break;
546 case BFD_RELOC_IA64_LTOFF_FPTR22: rtype = R_IA64_LTOFF_FPTR22; break;
547 case BFD_RELOC_IA64_LTOFF_FPTR64I: rtype = R_IA64_LTOFF_FPTR64I; break;
548 case BFD_RELOC_IA64_LTOFF_FPTR32MSB: rtype = R_IA64_LTOFF_FPTR32MSB; break;
549 case BFD_RELOC_IA64_LTOFF_FPTR32LSB: rtype = R_IA64_LTOFF_FPTR32LSB; break;
550 case BFD_RELOC_IA64_LTOFF_FPTR64MSB: rtype = R_IA64_LTOFF_FPTR64MSB; break;
551 case BFD_RELOC_IA64_LTOFF_FPTR64LSB: rtype = R_IA64_LTOFF_FPTR64LSB; break;
553 case BFD_RELOC_IA64_SEGREL32MSB: rtype = R_IA64_SEGREL32MSB; break;
554 case BFD_RELOC_IA64_SEGREL32LSB: rtype = R_IA64_SEGREL32LSB; break;
555 case BFD_RELOC_IA64_SEGREL64MSB: rtype = R_IA64_SEGREL64MSB; break;
556 case BFD_RELOC_IA64_SEGREL64LSB: rtype = R_IA64_SEGREL64LSB; break;
558 case BFD_RELOC_IA64_SECREL32MSB: rtype = R_IA64_SECREL32MSB; break;
559 case BFD_RELOC_IA64_SECREL32LSB: rtype = R_IA64_SECREL32LSB; break;
560 case BFD_RELOC_IA64_SECREL64MSB: rtype = R_IA64_SECREL64MSB; break;
561 case BFD_RELOC_IA64_SECREL64LSB: rtype = R_IA64_SECREL64LSB; break;
563 case BFD_RELOC_IA64_REL32MSB: rtype = R_IA64_REL32MSB; break;
564 case BFD_RELOC_IA64_REL32LSB: rtype = R_IA64_REL32LSB; break;
565 case BFD_RELOC_IA64_REL64MSB: rtype = R_IA64_REL64MSB; break;
566 case BFD_RELOC_IA64_REL64LSB: rtype = R_IA64_REL64LSB; break;
568 case BFD_RELOC_IA64_LTV32MSB: rtype = R_IA64_LTV32MSB; break;
569 case BFD_RELOC_IA64_LTV32LSB: rtype = R_IA64_LTV32LSB; break;
570 case BFD_RELOC_IA64_LTV64MSB: rtype = R_IA64_LTV64MSB; break;
571 case BFD_RELOC_IA64_LTV64LSB: rtype = R_IA64_LTV64LSB; break;
573 case BFD_RELOC_IA64_IPLTMSB: rtype = R_IA64_IPLTMSB; break;
574 case BFD_RELOC_IA64_IPLTLSB: rtype = R_IA64_IPLTLSB; break;
575 case BFD_RELOC_IA64_COPY: rtype = R_IA64_COPY; break;
576 case BFD_RELOC_IA64_LTOFF22X: rtype = R_IA64_LTOFF22X; break;
577 case BFD_RELOC_IA64_LDXMOV: rtype = R_IA64_LDXMOV; break;
579 case BFD_RELOC_IA64_TPREL14: rtype = R_IA64_TPREL14; break;
580 case BFD_RELOC_IA64_TPREL22: rtype = R_IA64_TPREL22; break;
581 case BFD_RELOC_IA64_TPREL64I: rtype = R_IA64_TPREL64I; break;
582 case BFD_RELOC_IA64_TPREL64MSB: rtype = R_IA64_TPREL64MSB; break;
583 case BFD_RELOC_IA64_TPREL64LSB: rtype = R_IA64_TPREL64LSB; break;
584 case BFD_RELOC_IA64_LTOFF_TPREL22: rtype = R_IA64_LTOFF_TPREL22; break;
586 case BFD_RELOC_IA64_DTPMOD64MSB: rtype = R_IA64_DTPMOD64MSB; break;
587 case BFD_RELOC_IA64_DTPMOD64LSB: rtype = R_IA64_DTPMOD64LSB; break;
588 case BFD_RELOC_IA64_LTOFF_DTPMOD22: rtype = R_IA64_LTOFF_DTPMOD22; break;
590 case BFD_RELOC_IA64_DTPREL14: rtype = R_IA64_DTPREL14; break;
591 case BFD_RELOC_IA64_DTPREL22: rtype = R_IA64_DTPREL22; break;
592 case BFD_RELOC_IA64_DTPREL64I: rtype = R_IA64_DTPREL64I; break;
593 case BFD_RELOC_IA64_DTPREL32MSB: rtype = R_IA64_DTPREL32MSB; break;
594 case BFD_RELOC_IA64_DTPREL32LSB: rtype = R_IA64_DTPREL32LSB; break;
595 case BFD_RELOC_IA64_DTPREL64MSB: rtype = R_IA64_DTPREL64MSB; break;
596 case BFD_RELOC_IA64_DTPREL64LSB: rtype = R_IA64_DTPREL64LSB; break;
597 case BFD_RELOC_IA64_LTOFF_DTPREL22: rtype = R_IA64_LTOFF_DTPREL22; break;
599 default: return 0;
601 return lookup_howto (rtype);
604 /* Given a ELF reloc, return the matching HOWTO structure. */
606 static void
607 elfNN_ia64_info_to_howto (abfd, bfd_reloc, elf_reloc)
608 bfd *abfd ATTRIBUTE_UNUSED;
609 arelent *bfd_reloc;
610 Elf_Internal_Rela *elf_reloc;
612 bfd_reloc->howto
613 = lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info));
616 #define PLT_HEADER_SIZE (3 * 16)
617 #define PLT_MIN_ENTRY_SIZE (1 * 16)
618 #define PLT_FULL_ENTRY_SIZE (2 * 16)
619 #define PLT_RESERVED_WORDS 3
621 static const bfd_byte plt_header[PLT_HEADER_SIZE] =
623 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
624 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
625 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
626 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
627 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
628 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
629 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
630 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
631 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
634 static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
636 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
637 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
638 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
641 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
643 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
644 0x00, 0x41, 0x3c, 0x30, 0x28, 0xc0, /* ld8 r16=[r15],8 */
645 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
646 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
647 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
648 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
651 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
653 static const bfd_byte oor_brl[16] =
655 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
656 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
657 0x00, 0x00, 0x00, 0xc0
660 /* These functions do relaxation for IA-64 ELF. */
662 static bfd_boolean
663 elfNN_ia64_relax_section (abfd, sec, link_info, again)
664 bfd *abfd;
665 asection *sec;
666 struct bfd_link_info *link_info;
667 bfd_boolean *again;
669 struct one_fixup
671 struct one_fixup *next;
672 asection *tsec;
673 bfd_vma toff;
674 bfd_vma trampoff;
677 Elf_Internal_Shdr *symtab_hdr;
678 Elf_Internal_Rela *internal_relocs;
679 Elf_Internal_Rela *irel, *irelend;
680 bfd_byte *contents;
681 Elf_Internal_Sym *isymbuf = NULL;
682 struct elfNN_ia64_link_hash_table *ia64_info;
683 struct one_fixup *fixups = NULL;
684 bfd_boolean changed_contents = FALSE;
685 bfd_boolean changed_relocs = FALSE;
686 bfd_boolean changed_got = FALSE;
687 bfd_vma gp = 0;
689 /* Assume we're not going to change any sizes, and we'll only need
690 one pass. */
691 *again = FALSE;
693 /* Don't even try to relax for non-ELF outputs. */
694 if (link_info->hash->creator->flavour != bfd_target_elf_flavour)
695 return FALSE;
697 /* Nothing to do if there are no relocations or there is no need for
698 the relax finalize pass. */
699 if ((sec->flags & SEC_RELOC) == 0
700 || sec->reloc_count == 0
701 || (link_info->relax_finalizing
702 && sec->need_finalize_relax == 0))
703 return TRUE;
705 /* If this is the first time we have been called for this section,
706 initialize the cooked size. */
707 if (sec->_cooked_size == 0)
708 sec->_cooked_size = sec->_raw_size;
710 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
712 /* Load the relocations for this section. */
713 internal_relocs = (_bfd_elf_link_read_relocs
714 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
715 link_info->keep_memory));
716 if (internal_relocs == NULL)
717 return FALSE;
719 ia64_info = elfNN_ia64_hash_table (link_info);
720 irelend = internal_relocs + sec->reloc_count;
722 /* Get the section contents. */
723 if (elf_section_data (sec)->this_hdr.contents != NULL)
724 contents = elf_section_data (sec)->this_hdr.contents;
725 else
727 contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
728 if (contents == NULL)
729 goto error_return;
731 if (! bfd_get_section_contents (abfd, sec, contents,
732 (file_ptr) 0, sec->_raw_size))
733 goto error_return;
736 for (irel = internal_relocs; irel < irelend; irel++)
738 unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
739 bfd_vma symaddr, reladdr, trampoff, toff, roff;
740 asection *tsec;
741 struct one_fixup *f;
742 bfd_size_type amt;
743 bfd_boolean is_branch;
744 struct elfNN_ia64_dyn_sym_info *dyn_i;
746 switch (r_type)
748 case R_IA64_PCREL21B:
749 case R_IA64_PCREL21BI:
750 case R_IA64_PCREL21M:
751 case R_IA64_PCREL21F:
752 if (link_info->relax_finalizing)
753 continue;
754 is_branch = TRUE;
755 break;
757 case R_IA64_LTOFF22X:
758 case R_IA64_LDXMOV:
759 if (!link_info->relax_finalizing)
761 sec->need_finalize_relax = 1;
762 continue;
764 is_branch = FALSE;
765 break;
767 default:
768 continue;
771 /* Get the value of the symbol referred to by the reloc. */
772 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
774 /* A local symbol. */
775 Elf_Internal_Sym *isym;
777 /* Read this BFD's local symbols. */
778 if (isymbuf == NULL)
780 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
781 if (isymbuf == NULL)
782 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
783 symtab_hdr->sh_info, 0,
784 NULL, NULL, NULL);
785 if (isymbuf == 0)
786 goto error_return;
789 isym = isymbuf + ELFNN_R_SYM (irel->r_info);
790 if (isym->st_shndx == SHN_UNDEF)
791 continue; /* We can't do anthing with undefined symbols. */
792 else if (isym->st_shndx == SHN_ABS)
793 tsec = bfd_abs_section_ptr;
794 else if (isym->st_shndx == SHN_COMMON)
795 tsec = bfd_com_section_ptr;
796 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
797 tsec = bfd_com_section_ptr;
798 else
799 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
801 toff = isym->st_value;
802 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
804 else
806 unsigned long indx;
807 struct elf_link_hash_entry *h;
809 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
810 h = elf_sym_hashes (abfd)[indx];
811 BFD_ASSERT (h != NULL);
813 while (h->root.type == bfd_link_hash_indirect
814 || h->root.type == bfd_link_hash_warning)
815 h = (struct elf_link_hash_entry *) h->root.u.i.link;
817 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
819 /* For branches to dynamic symbols, we're interested instead
820 in a branch to the PLT entry. */
821 if (is_branch && dyn_i && dyn_i->want_plt2)
823 /* Internal branches shouldn't be sent to the PLT.
824 Leave this for now and we'll give an error later. */
825 if (r_type != R_IA64_PCREL21B)
826 continue;
828 tsec = ia64_info->plt_sec;
829 toff = dyn_i->plt2_offset;
830 BFD_ASSERT (irel->r_addend == 0);
833 /* Can't do anything else with dynamic symbols. */
834 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
835 continue;
837 else
839 /* We can't do anthing with undefined symbols. */
840 if (h->root.type == bfd_link_hash_undefined
841 || h->root.type == bfd_link_hash_undefweak)
842 continue;
844 tsec = h->root.u.def.section;
845 toff = h->root.u.def.value;
849 if (tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
850 toff = _bfd_merged_section_offset (abfd, &tsec,
851 elf_section_data (tsec)->sec_info,
852 toff + irel->r_addend,
853 (bfd_vma) 0);
854 else
855 toff += irel->r_addend;
857 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
859 roff = irel->r_offset;
861 if (is_branch)
863 reladdr = (sec->output_section->vma
864 + sec->output_offset
865 + roff) & (bfd_vma) -4;
867 /* If the branch is in range, no need to do anything. */
868 if ((bfd_signed_vma) (symaddr - reladdr) >= -0x1000000
869 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
870 continue;
872 /* If the branch and target are in the same section, you've
873 got one honking big section and we can't help you. You'll
874 get an error message later. */
875 if (tsec == sec)
876 continue;
878 /* Look for an existing fixup to this address. */
879 for (f = fixups; f ; f = f->next)
880 if (f->tsec == tsec && f->toff == toff)
881 break;
883 if (f == NULL)
885 /* Two alternatives: If it's a branch to a PLT entry, we can
886 make a copy of the FULL_PLT entry. Otherwise, we'll have
887 to use a `brl' insn to get where we're going. */
889 size_t size;
891 if (tsec == ia64_info->plt_sec)
892 size = sizeof (plt_full_entry);
893 else
895 size = sizeof (oor_brl);
898 /* Resize the current section to make room for the new branch. */
899 trampoff = (sec->_cooked_size + 15) & (bfd_vma) -16;
900 amt = trampoff + size;
901 contents = (bfd_byte *) bfd_realloc (contents, amt);
902 if (contents == NULL)
903 goto error_return;
904 sec->_cooked_size = amt;
906 if (tsec == ia64_info->plt_sec)
908 memcpy (contents + trampoff, plt_full_entry, size);
910 /* Hijack the old relocation for use as the PLTOFF reloc. */
911 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
912 R_IA64_PLTOFF22);
913 irel->r_offset = trampoff;
915 else
917 memcpy (contents + trampoff, oor_brl, size);
918 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
919 R_IA64_PCREL60B);
920 irel->r_offset = trampoff + 2;
923 /* Record the fixup so we don't do it again this section. */
924 f = (struct one_fixup *)
925 bfd_malloc ((bfd_size_type) sizeof (*f));
926 f->next = fixups;
927 f->tsec = tsec;
928 f->toff = toff;
929 f->trampoff = trampoff;
930 fixups = f;
932 else
934 /* Nop out the reloc, since we're finalizing things here. */
935 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
938 /* Fix up the existing branch to hit the trampoline. Hope like
939 hell this doesn't overflow too. */
940 if (elfNN_ia64_install_value (abfd, contents + roff,
941 f->trampoff - (roff & (bfd_vma) -4),
942 r_type) != bfd_reloc_ok)
943 goto error_return;
945 changed_contents = TRUE;
946 changed_relocs = TRUE;
948 else
950 /* Fetch the gp. */
951 if (gp == 0)
953 bfd *obfd = sec->output_section->owner;
954 gp = _bfd_get_gp_value (obfd);
955 if (gp == 0)
957 if (!elfNN_ia64_choose_gp (obfd, link_info))
958 goto error_return;
959 gp = _bfd_get_gp_value (obfd);
963 /* If the data is out of range, do nothing. */
964 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
965 ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
966 continue;
968 if (r_type == R_IA64_LTOFF22X)
970 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
971 R_IA64_GPREL22);
972 changed_relocs = TRUE;
973 if (dyn_i->want_gotx)
975 dyn_i->want_gotx = 0;
976 changed_got |= !dyn_i->want_got;
979 else
981 elfNN_ia64_relax_ldxmov (abfd, contents, roff);
982 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
983 changed_contents = TRUE;
984 changed_relocs = TRUE;
989 /* ??? If we created fixups, this may push the code segment large
990 enough that the data segment moves, which will change the GP.
991 Reset the GP so that we re-calculate next round. We need to
992 do this at the _beginning_ of the next round; now will not do. */
994 /* Clean up and go home. */
995 while (fixups)
997 struct one_fixup *f = fixups;
998 fixups = fixups->next;
999 free (f);
1002 if (isymbuf != NULL
1003 && symtab_hdr->contents != (unsigned char *) isymbuf)
1005 if (! link_info->keep_memory)
1006 free (isymbuf);
1007 else
1009 /* Cache the symbols for elf_link_input_bfd. */
1010 symtab_hdr->contents = (unsigned char *) isymbuf;
1014 if (contents != NULL
1015 && elf_section_data (sec)->this_hdr.contents != contents)
1017 if (!changed_contents && !link_info->keep_memory)
1018 free (contents);
1019 else
1021 /* Cache the section contents for elf_link_input_bfd. */
1022 elf_section_data (sec)->this_hdr.contents = contents;
1026 if (elf_section_data (sec)->relocs != internal_relocs)
1028 if (!changed_relocs)
1029 free (internal_relocs);
1030 else
1031 elf_section_data (sec)->relocs = internal_relocs;
1034 if (changed_got)
1036 struct elfNN_ia64_allocate_data data;
1037 data.info = link_info;
1038 data.ofs = 0;
1039 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
1041 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
1042 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
1043 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
1044 ia64_info->got_sec->_raw_size = data.ofs;
1045 ia64_info->got_sec->_cooked_size = data.ofs;
1047 /* ??? Resize .rela.got too. */
1050 if (link_info->relax_finalizing)
1051 sec->need_finalize_relax = 0;
1053 *again = changed_contents || changed_relocs;
1054 return TRUE;
1056 error_return:
1057 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
1058 free (isymbuf);
1059 if (contents != NULL
1060 && elf_section_data (sec)->this_hdr.contents != contents)
1061 free (contents);
1062 if (internal_relocs != NULL
1063 && elf_section_data (sec)->relocs != internal_relocs)
1064 free (internal_relocs);
1065 return FALSE;
1068 static void
1069 elfNN_ia64_relax_ldxmov (abfd, contents, off)
1070 bfd *abfd;
1071 bfd_byte *contents;
1072 bfd_vma off;
1074 int shift, r1, r3;
1075 bfd_vma dword, insn;
1077 switch ((int)off & 0x3)
1079 case 0: shift = 5; break;
1080 case 1: shift = 14; off += 3; break;
1081 case 2: shift = 23; off += 6; break;
1082 default:
1083 abort ();
1086 dword = bfd_get_64 (abfd, contents + off);
1087 insn = (dword >> shift) & 0x1ffffffffffLL;
1089 r1 = (insn >> 6) & 127;
1090 r3 = (insn >> 20) & 127;
1091 if (r1 == r3)
1092 insn = 0x8000000; /* nop */
1093 else
1094 insn = (insn & 0x7f01fff) | 0x10800000000LL; /* (qp) mov r1 = r3 */
1096 dword &= ~(0x1ffffffffffLL << shift);
1097 dword |= (insn << shift);
1098 bfd_put_64 (abfd, dword, contents + off);
1101 /* Return TRUE if NAME is an unwind table section name. */
1103 static inline bfd_boolean
1104 is_unwind_section_name (abfd, name)
1105 bfd *abfd;
1106 const char *name;
1108 size_t len1, len2, len3;
1110 if (elfNN_ia64_hpux_vec (abfd->xvec)
1111 && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
1112 return FALSE;
1114 len1 = sizeof (ELF_STRING_ia64_unwind) - 1;
1115 len2 = sizeof (ELF_STRING_ia64_unwind_info) - 1;
1116 len3 = sizeof (ELF_STRING_ia64_unwind_once) - 1;
1117 return ((strncmp (name, ELF_STRING_ia64_unwind, len1) == 0
1118 && strncmp (name, ELF_STRING_ia64_unwind_info, len2) != 0)
1119 || strncmp (name, ELF_STRING_ia64_unwind_once, len3) == 0);
1122 /* Handle an IA-64 specific section when reading an object file. This
1123 is called when elfcode.h finds a section with an unknown type. */
1125 static bfd_boolean
1126 elfNN_ia64_section_from_shdr (abfd, hdr, name)
1127 bfd *abfd;
1128 Elf_Internal_Shdr *hdr;
1129 const char *name;
1131 asection *newsect;
1133 /* There ought to be a place to keep ELF backend specific flags, but
1134 at the moment there isn't one. We just keep track of the
1135 sections by their name, instead. Fortunately, the ABI gives
1136 suggested names for all the MIPS specific sections, so we will
1137 probably get away with this. */
1138 switch (hdr->sh_type)
1140 case SHT_IA_64_UNWIND:
1141 case SHT_IA_64_HP_OPT_ANOT:
1142 break;
1144 case SHT_IA_64_EXT:
1145 if (strcmp (name, ELF_STRING_ia64_archext) != 0)
1146 return FALSE;
1147 break;
1149 default:
1150 return FALSE;
1153 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1154 return FALSE;
1155 newsect = hdr->bfd_section;
1157 return TRUE;
1160 /* Convert IA-64 specific section flags to bfd internal section flags. */
1162 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
1163 flag. */
1165 static bfd_boolean
1166 elfNN_ia64_section_flags (flags, hdr)
1167 flagword *flags;
1168 Elf_Internal_Shdr *hdr;
1170 if (hdr->sh_flags & SHF_IA_64_SHORT)
1171 *flags |= SEC_SMALL_DATA;
1173 return TRUE;
1176 /* Set the correct type for an IA-64 ELF section. We do this by the
1177 section name, which is a hack, but ought to work. */
1179 static bfd_boolean
1180 elfNN_ia64_fake_sections (abfd, hdr, sec)
1181 bfd *abfd ATTRIBUTE_UNUSED;
1182 Elf_Internal_Shdr *hdr;
1183 asection *sec;
1185 register const char *name;
1187 name = bfd_get_section_name (abfd, sec);
1189 if (is_unwind_section_name (abfd, name))
1191 /* We don't have the sections numbered at this point, so sh_info
1192 is set later, in elfNN_ia64_final_write_processing. */
1193 hdr->sh_type = SHT_IA_64_UNWIND;
1194 hdr->sh_flags |= SHF_LINK_ORDER;
1196 else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
1197 hdr->sh_type = SHT_IA_64_EXT;
1198 else if (strcmp (name, ".HP.opt_annot") == 0)
1199 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
1200 else if (strcmp (name, ".reloc") == 0)
1201 /* This is an ugly, but unfortunately necessary hack that is
1202 needed when producing EFI binaries on IA-64. It tells
1203 elf.c:elf_fake_sections() not to consider ".reloc" as a section
1204 containing ELF relocation info. We need this hack in order to
1205 be able to generate ELF binaries that can be translated into
1206 EFI applications (which are essentially COFF objects). Those
1207 files contain a COFF ".reloc" section inside an ELFNN object,
1208 which would normally cause BFD to segfault because it would
1209 attempt to interpret this section as containing relocation
1210 entries for section "oc". With this hack enabled, ".reloc"
1211 will be treated as a normal data section, which will avoid the
1212 segfault. However, you won't be able to create an ELFNN binary
1213 with a section named "oc" that needs relocations, but that's
1214 the kind of ugly side-effects you get when detecting section
1215 types based on their names... In practice, this limitation is
1216 unlikely to bite. */
1217 hdr->sh_type = SHT_PROGBITS;
1219 if (sec->flags & SEC_SMALL_DATA)
1220 hdr->sh_flags |= SHF_IA_64_SHORT;
1222 return TRUE;
1225 /* The final processing done just before writing out an IA-64 ELF
1226 object file. */
1228 static void
1229 elfNN_ia64_final_write_processing (abfd, linker)
1230 bfd *abfd;
1231 bfd_boolean linker ATTRIBUTE_UNUSED;
1233 Elf_Internal_Shdr *hdr;
1234 const char *sname;
1235 asection *text_sect, *s;
1236 size_t len;
1238 for (s = abfd->sections; s; s = s->next)
1240 hdr = &elf_section_data (s)->this_hdr;
1241 switch (hdr->sh_type)
1243 case SHT_IA_64_UNWIND:
1244 /* See comments in gas/config/tc-ia64.c:dot_endp on why we
1245 have to do this. */
1246 sname = bfd_get_section_name (abfd, s);
1247 len = sizeof (ELF_STRING_ia64_unwind) - 1;
1248 if (sname && strncmp (sname, ELF_STRING_ia64_unwind, len) == 0)
1250 sname += len;
1252 if (sname[0] == '\0')
1253 /* .IA_64.unwind -> .text */
1254 text_sect = bfd_get_section_by_name (abfd, ".text");
1255 else
1256 /* .IA_64.unwindFOO -> FOO */
1257 text_sect = bfd_get_section_by_name (abfd, sname);
1259 else if (sname
1260 && (len = sizeof (ELF_STRING_ia64_unwind_once) - 1,
1261 strncmp (sname, ELF_STRING_ia64_unwind_once, len)) == 0)
1263 /* .gnu.linkonce.ia64unw.FOO -> .gnu.linkonce.t.FOO */
1264 size_t len2 = sizeof (".gnu.linkonce.t.") - 1;
1265 char *once_name = bfd_malloc (len2 + strlen (sname + len) + 1);
1267 if (once_name != NULL)
1269 memcpy (once_name, ".gnu.linkonce.t.", len2);
1270 strcpy (once_name + len2, sname + len);
1271 text_sect = bfd_get_section_by_name (abfd, once_name);
1272 free (once_name);
1274 else
1275 /* Should only happen if we run out of memory, in
1276 which case we're probably toast anyway. Try to
1277 cope by finding the section the slow way. */
1278 for (text_sect = abfd->sections;
1279 text_sect != NULL;
1280 text_sect = text_sect->next)
1282 if (strncmp (bfd_section_name (abfd, text_sect),
1283 ".gnu.linkonce.t.", len2) == 0
1284 && strcmp (bfd_section_name (abfd, text_sect) + len2,
1285 sname + len) == 0)
1286 break;
1289 else
1290 /* last resort: fall back on .text */
1291 text_sect = bfd_get_section_by_name (abfd, ".text");
1293 if (text_sect)
1295 /* The IA-64 processor-specific ABI requires setting
1296 sh_link to the unwind section, whereas HP-UX requires
1297 sh_info to do so. For maximum compatibility, we'll
1298 set both for now... */
1299 hdr->sh_link = elf_section_data (text_sect)->this_idx;
1300 hdr->sh_info = elf_section_data (text_sect)->this_idx;
1302 break;
1306 if (! elf_flags_init (abfd))
1308 unsigned long flags = 0;
1310 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1311 flags |= EF_IA_64_BE;
1312 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1313 flags |= EF_IA_64_ABI64;
1315 elf_elfheader(abfd)->e_flags = flags;
1316 elf_flags_init (abfd) = TRUE;
1320 /* Hook called by the linker routine which adds symbols from an object
1321 file. We use it to put .comm items in .sbss, and not .bss. */
1323 static bfd_boolean
1324 elfNN_ia64_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1325 bfd *abfd;
1326 struct bfd_link_info *info;
1327 const Elf_Internal_Sym *sym;
1328 const char **namep ATTRIBUTE_UNUSED;
1329 flagword *flagsp ATTRIBUTE_UNUSED;
1330 asection **secp;
1331 bfd_vma *valp;
1333 if (sym->st_shndx == SHN_COMMON
1334 && !info->relocatable
1335 && sym->st_size <= elf_gp_size (abfd))
1337 /* Common symbols less than or equal to -G nn bytes are
1338 automatically put into .sbss. */
1340 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1342 if (scomm == NULL)
1344 scomm = bfd_make_section (abfd, ".scommon");
1345 if (scomm == NULL
1346 || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC
1347 | SEC_IS_COMMON
1348 | SEC_LINKER_CREATED)))
1349 return FALSE;
1352 *secp = scomm;
1353 *valp = sym->st_size;
1356 return TRUE;
1359 /* Return the number of additional phdrs we will need. */
1361 static int
1362 elfNN_ia64_additional_program_headers (abfd)
1363 bfd *abfd;
1365 asection *s;
1366 int ret = 0;
1368 /* See if we need a PT_IA_64_ARCHEXT segment. */
1369 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1370 if (s && (s->flags & SEC_LOAD))
1371 ++ret;
1373 /* Count how many PT_IA_64_UNWIND segments we need. */
1374 for (s = abfd->sections; s; s = s->next)
1375 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1376 ++ret;
1378 return ret;
1381 static bfd_boolean
1382 elfNN_ia64_modify_segment_map (abfd)
1383 bfd *abfd;
1385 struct elf_segment_map *m, **pm;
1386 Elf_Internal_Shdr *hdr;
1387 asection *s;
1389 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1390 all PT_LOAD segments. */
1391 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1392 if (s && (s->flags & SEC_LOAD))
1394 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1395 if (m->p_type == PT_IA_64_ARCHEXT)
1396 break;
1397 if (m == NULL)
1399 m = ((struct elf_segment_map *)
1400 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1401 if (m == NULL)
1402 return FALSE;
1404 m->p_type = PT_IA_64_ARCHEXT;
1405 m->count = 1;
1406 m->sections[0] = s;
1408 /* We want to put it after the PHDR and INTERP segments. */
1409 pm = &elf_tdata (abfd)->segment_map;
1410 while (*pm != NULL
1411 && ((*pm)->p_type == PT_PHDR
1412 || (*pm)->p_type == PT_INTERP))
1413 pm = &(*pm)->next;
1415 m->next = *pm;
1416 *pm = m;
1420 /* Install PT_IA_64_UNWIND segments, if needed. */
1421 for (s = abfd->sections; s; s = s->next)
1423 hdr = &elf_section_data (s)->this_hdr;
1424 if (hdr->sh_type != SHT_IA_64_UNWIND)
1425 continue;
1427 if (s && (s->flags & SEC_LOAD))
1429 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1430 if (m->p_type == PT_IA_64_UNWIND)
1432 int i;
1434 /* Look through all sections in the unwind segment
1435 for a match since there may be multiple sections
1436 to a segment. */
1437 for (i = m->count - 1; i >= 0; --i)
1438 if (m->sections[i] == s)
1439 break;
1441 if (i >= 0)
1442 break;
1445 if (m == NULL)
1447 m = ((struct elf_segment_map *)
1448 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1449 if (m == NULL)
1450 return FALSE;
1452 m->p_type = PT_IA_64_UNWIND;
1453 m->count = 1;
1454 m->sections[0] = s;
1455 m->next = NULL;
1457 /* We want to put it last. */
1458 pm = &elf_tdata (abfd)->segment_map;
1459 while (*pm != NULL)
1460 pm = &(*pm)->next;
1461 *pm = m;
1466 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1467 the input sections for each output section in the segment and testing
1468 for SHF_IA_64_NORECOV on each. */
1469 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1470 if (m->p_type == PT_LOAD)
1472 int i;
1473 for (i = m->count - 1; i >= 0; --i)
1475 struct bfd_link_order *order = m->sections[i]->link_order_head;
1476 while (order)
1478 if (order->type == bfd_indirect_link_order)
1480 asection *is = order->u.indirect.section;
1481 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1482 if (flags & SHF_IA_64_NORECOV)
1484 m->p_flags |= PF_IA_64_NORECOV;
1485 goto found;
1488 order = order->next;
1491 found:;
1494 return TRUE;
1497 /* According to the Tahoe assembler spec, all labels starting with a
1498 '.' are local. */
1500 static bfd_boolean
1501 elfNN_ia64_is_local_label_name (abfd, name)
1502 bfd *abfd ATTRIBUTE_UNUSED;
1503 const char *name;
1505 return name[0] == '.';
1508 /* Should we do dynamic things to this symbol? */
1510 static bfd_boolean
1511 elfNN_ia64_dynamic_symbol_p (h, info, r_type)
1512 struct elf_link_hash_entry *h;
1513 struct bfd_link_info *info;
1514 int r_type;
1516 bfd_boolean ignore_protected
1517 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1518 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1520 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1523 static bfd_boolean
1524 elfNN_ia64_local_hash_table_init (ht, abfd, new)
1525 struct elfNN_ia64_local_hash_table *ht;
1526 bfd *abfd ATTRIBUTE_UNUSED;
1527 new_hash_entry_func new;
1529 memset (ht, 0, sizeof (*ht));
1530 return bfd_hash_table_init (&ht->root, new);
1533 static struct bfd_hash_entry*
1534 elfNN_ia64_new_loc_hash_entry (entry, table, string)
1535 struct bfd_hash_entry *entry;
1536 struct bfd_hash_table *table;
1537 const char *string;
1539 struct elfNN_ia64_local_hash_entry *ret;
1540 ret = (struct elfNN_ia64_local_hash_entry *) entry;
1542 /* Allocate the structure if it has not already been allocated by a
1543 subclass. */
1544 if (!ret)
1545 ret = bfd_hash_allocate (table, sizeof (*ret));
1547 if (!ret)
1548 return 0;
1550 /* Initialize our local data. All zeros, and definitely easier
1551 than setting a handful of bit fields. */
1552 memset (ret, 0, sizeof (*ret));
1554 /* Call the allocation method of the superclass. */
1555 ret = ((struct elfNN_ia64_local_hash_entry *)
1556 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
1558 return (struct bfd_hash_entry *) ret;
1561 static struct bfd_hash_entry*
1562 elfNN_ia64_new_elf_hash_entry (entry, table, string)
1563 struct bfd_hash_entry *entry;
1564 struct bfd_hash_table *table;
1565 const char *string;
1567 struct elfNN_ia64_link_hash_entry *ret;
1568 ret = (struct elfNN_ia64_link_hash_entry *) entry;
1570 /* Allocate the structure if it has not already been allocated by a
1571 subclass. */
1572 if (!ret)
1573 ret = bfd_hash_allocate (table, sizeof (*ret));
1575 if (!ret)
1576 return 0;
1578 /* Initialize our local data. All zeros, and definitely easier
1579 than setting a handful of bit fields. */
1580 memset (ret, 0, sizeof (*ret));
1582 /* Call the allocation method of the superclass. */
1583 ret = ((struct elfNN_ia64_link_hash_entry *)
1584 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1585 table, string));
1587 return (struct bfd_hash_entry *) ret;
1590 static void
1591 elfNN_ia64_hash_copy_indirect (bed, xdir, xind)
1592 struct elf_backend_data *bed ATTRIBUTE_UNUSED;
1593 struct elf_link_hash_entry *xdir, *xind;
1595 struct elfNN_ia64_link_hash_entry *dir, *ind;
1597 dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1598 ind = (struct elfNN_ia64_link_hash_entry *) xind;
1600 /* Copy down any references that we may have already seen to the
1601 symbol which just became indirect. */
1603 dir->root.elf_link_hash_flags |=
1604 (ind->root.elf_link_hash_flags
1605 & (ELF_LINK_HASH_REF_DYNAMIC
1606 | ELF_LINK_HASH_REF_REGULAR
1607 | ELF_LINK_HASH_REF_REGULAR_NONWEAK));
1609 if (ind->root.root.type != bfd_link_hash_indirect)
1610 return;
1612 /* Copy over the got and plt data. This would have been done
1613 by check_relocs. */
1615 if (dir->info == NULL)
1617 struct elfNN_ia64_dyn_sym_info *dyn_i;
1619 dir->info = dyn_i = ind->info;
1620 ind->info = NULL;
1622 /* Fix up the dyn_sym_info pointers to the global symbol. */
1623 for (; dyn_i; dyn_i = dyn_i->next)
1624 dyn_i->h = &dir->root;
1626 BFD_ASSERT (ind->info == NULL);
1628 /* Copy over the dynindx. */
1630 if (dir->root.dynindx == -1)
1632 dir->root.dynindx = ind->root.dynindx;
1633 dir->root.dynstr_index = ind->root.dynstr_index;
1634 ind->root.dynindx = -1;
1635 ind->root.dynstr_index = 0;
1637 BFD_ASSERT (ind->root.dynindx == -1);
1640 static void
1641 elfNN_ia64_hash_hide_symbol (info, xh, force_local)
1642 struct bfd_link_info *info;
1643 struct elf_link_hash_entry *xh;
1644 bfd_boolean force_local;
1646 struct elfNN_ia64_link_hash_entry *h;
1647 struct elfNN_ia64_dyn_sym_info *dyn_i;
1649 h = (struct elfNN_ia64_link_hash_entry *)xh;
1651 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1653 for (dyn_i = h->info; dyn_i; dyn_i = dyn_i->next)
1655 dyn_i->want_plt2 = 0;
1656 dyn_i->want_plt = 0;
1660 /* Create the derived linker hash table. The IA-64 ELF port uses this
1661 derived hash table to keep information specific to the IA-64 ElF
1662 linker (without using static variables). */
1664 static struct bfd_link_hash_table*
1665 elfNN_ia64_hash_table_create (abfd)
1666 bfd *abfd;
1668 struct elfNN_ia64_link_hash_table *ret;
1670 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1671 if (!ret)
1672 return 0;
1674 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1675 elfNN_ia64_new_elf_hash_entry))
1677 free (ret);
1678 return 0;
1681 if (!elfNN_ia64_local_hash_table_init (&ret->loc_hash_table, abfd,
1682 elfNN_ia64_new_loc_hash_entry))
1684 free (ret);
1685 return 0;
1688 return &ret->root.root;
1691 /* Look up an entry in a Alpha ELF linker hash table. */
1693 static INLINE struct elfNN_ia64_local_hash_entry *
1694 elfNN_ia64_local_hash_lookup(table, string, create, copy)
1695 struct elfNN_ia64_local_hash_table *table;
1696 const char *string;
1697 bfd_boolean create, copy;
1699 return ((struct elfNN_ia64_local_hash_entry *)
1700 bfd_hash_lookup (&table->root, string, create, copy));
1703 /* Traverse both local and global hash tables. */
1705 struct elfNN_ia64_dyn_sym_traverse_data
1707 bfd_boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
1708 PTR data;
1711 static bfd_boolean
1712 elfNN_ia64_global_dyn_sym_thunk (xentry, xdata)
1713 struct bfd_hash_entry *xentry;
1714 PTR xdata;
1716 struct elfNN_ia64_link_hash_entry *entry
1717 = (struct elfNN_ia64_link_hash_entry *) xentry;
1718 struct elfNN_ia64_dyn_sym_traverse_data *data
1719 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1720 struct elfNN_ia64_dyn_sym_info *dyn_i;
1722 if (entry->root.root.type == bfd_link_hash_warning)
1723 entry = (struct elfNN_ia64_link_hash_entry *) entry->root.root.u.i.link;
1725 for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
1726 if (! (*data->func) (dyn_i, data->data))
1727 return FALSE;
1728 return TRUE;
1731 static bfd_boolean
1732 elfNN_ia64_local_dyn_sym_thunk (xentry, xdata)
1733 struct bfd_hash_entry *xentry;
1734 PTR xdata;
1736 struct elfNN_ia64_local_hash_entry *entry
1737 = (struct elfNN_ia64_local_hash_entry *) xentry;
1738 struct elfNN_ia64_dyn_sym_traverse_data *data
1739 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1740 struct elfNN_ia64_dyn_sym_info *dyn_i;
1742 for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
1743 if (! (*data->func) (dyn_i, data->data))
1744 return FALSE;
1745 return TRUE;
1748 static void
1749 elfNN_ia64_dyn_sym_traverse (ia64_info, func, data)
1750 struct elfNN_ia64_link_hash_table *ia64_info;
1751 bfd_boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
1752 PTR data;
1754 struct elfNN_ia64_dyn_sym_traverse_data xdata;
1756 xdata.func = func;
1757 xdata.data = data;
1759 elf_link_hash_traverse (&ia64_info->root,
1760 elfNN_ia64_global_dyn_sym_thunk, &xdata);
1761 bfd_hash_traverse (&ia64_info->loc_hash_table.root,
1762 elfNN_ia64_local_dyn_sym_thunk, &xdata);
1765 static bfd_boolean
1766 elfNN_ia64_create_dynamic_sections (abfd, info)
1767 bfd *abfd;
1768 struct bfd_link_info *info;
1770 struct elfNN_ia64_link_hash_table *ia64_info;
1771 asection *s;
1773 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1774 return FALSE;
1776 ia64_info = elfNN_ia64_hash_table (info);
1778 ia64_info->plt_sec = bfd_get_section_by_name (abfd, ".plt");
1779 ia64_info->got_sec = bfd_get_section_by_name (abfd, ".got");
1782 flagword flags = bfd_get_section_flags (abfd, ia64_info->got_sec);
1783 bfd_set_section_flags (abfd, ia64_info->got_sec, SEC_SMALL_DATA | flags);
1786 if (!get_pltoff (abfd, info, ia64_info))
1787 return FALSE;
1789 s = bfd_make_section(abfd, ".rela.IA_64.pltoff");
1790 if (s == NULL
1791 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1792 | SEC_HAS_CONTENTS
1793 | SEC_IN_MEMORY
1794 | SEC_LINKER_CREATED
1795 | SEC_READONLY))
1796 || !bfd_set_section_alignment (abfd, s, 3))
1797 return FALSE;
1798 ia64_info->rel_pltoff_sec = s;
1800 s = bfd_make_section(abfd, ".rela.got");
1801 if (s == NULL
1802 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1803 | SEC_HAS_CONTENTS
1804 | SEC_IN_MEMORY
1805 | SEC_LINKER_CREATED
1806 | SEC_READONLY))
1807 || !bfd_set_section_alignment (abfd, s, 3))
1808 return FALSE;
1809 ia64_info->rel_got_sec = s;
1811 return TRUE;
1814 /* Find and/or create a hash entry for local symbol. */
1815 static struct elfNN_ia64_local_hash_entry *
1816 get_local_sym_hash (ia64_info, abfd, rel, create)
1817 struct elfNN_ia64_link_hash_table *ia64_info;
1818 bfd *abfd;
1819 const Elf_Internal_Rela *rel;
1820 bfd_boolean create;
1822 struct elfNN_ia64_local_hash_entry *ret;
1823 asection *sec = abfd->sections;
1824 char addr_name [34];
1826 BFD_ASSERT ((sizeof (sec->id)*2 + 1 + sizeof (unsigned long)*2 + 1) <= 34);
1827 BFD_ASSERT (sec);
1829 /* Construct a string for use in the elfNN_ia64_local_hash_table.
1830 name describes what was once anonymous memory. */
1832 sprintf (addr_name, "%x:%lx",
1833 sec->id, (unsigned long) ELFNN_R_SYM (rel->r_info));
1835 /* Collect the canonical entry data for this address. */
1836 ret = elfNN_ia64_local_hash_lookup (&ia64_info->loc_hash_table,
1837 addr_name, create, create);
1838 return ret;
1841 /* Find and/or create a descriptor for dynamic symbol info. This will
1842 vary based on global or local symbol, and the addend to the reloc. */
1844 static struct elfNN_ia64_dyn_sym_info *
1845 get_dyn_sym_info (ia64_info, h, abfd, rel, create)
1846 struct elfNN_ia64_link_hash_table *ia64_info;
1847 struct elf_link_hash_entry *h;
1848 bfd *abfd;
1849 const Elf_Internal_Rela *rel;
1850 bfd_boolean create;
1852 struct elfNN_ia64_dyn_sym_info **pp;
1853 struct elfNN_ia64_dyn_sym_info *dyn_i;
1854 bfd_vma addend = rel ? rel->r_addend : 0;
1856 if (h)
1857 pp = &((struct elfNN_ia64_link_hash_entry *)h)->info;
1858 else
1860 struct elfNN_ia64_local_hash_entry *loc_h;
1862 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1863 if (!loc_h)
1865 BFD_ASSERT (!create);
1866 return NULL;
1869 pp = &loc_h->info;
1872 for (dyn_i = *pp; dyn_i && dyn_i->addend != addend; dyn_i = *pp)
1873 pp = &dyn_i->next;
1875 if (dyn_i == NULL && create)
1877 dyn_i = ((struct elfNN_ia64_dyn_sym_info *)
1878 bfd_zalloc (abfd, (bfd_size_type) sizeof *dyn_i));
1879 *pp = dyn_i;
1880 dyn_i->addend = addend;
1883 return dyn_i;
1886 static asection *
1887 get_got (abfd, info, ia64_info)
1888 bfd *abfd;
1889 struct bfd_link_info *info;
1890 struct elfNN_ia64_link_hash_table *ia64_info;
1892 asection *got;
1893 bfd *dynobj;
1895 got = ia64_info->got_sec;
1896 if (!got)
1898 flagword flags;
1900 dynobj = ia64_info->root.dynobj;
1901 if (!dynobj)
1902 ia64_info->root.dynobj = dynobj = abfd;
1903 if (!_bfd_elf_create_got_section (dynobj, info))
1904 return 0;
1906 got = bfd_get_section_by_name (dynobj, ".got");
1907 BFD_ASSERT (got);
1908 ia64_info->got_sec = got;
1910 flags = bfd_get_section_flags (abfd, got);
1911 bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags);
1914 return got;
1917 /* Create function descriptor section (.opd). This section is called .opd
1918 because it contains "official prodecure descriptors". The "official"
1919 refers to the fact that these descriptors are used when taking the address
1920 of a procedure, thus ensuring a unique address for each procedure. */
1922 static asection *
1923 get_fptr (abfd, info, ia64_info)
1924 bfd *abfd;
1925 struct bfd_link_info *info;
1926 struct elfNN_ia64_link_hash_table *ia64_info;
1928 asection *fptr;
1929 bfd *dynobj;
1931 fptr = ia64_info->fptr_sec;
1932 if (!fptr)
1934 dynobj = ia64_info->root.dynobj;
1935 if (!dynobj)
1936 ia64_info->root.dynobj = dynobj = abfd;
1938 fptr = bfd_make_section (dynobj, ".opd");
1939 if (!fptr
1940 || !bfd_set_section_flags (dynobj, fptr,
1941 (SEC_ALLOC
1942 | SEC_LOAD
1943 | SEC_HAS_CONTENTS
1944 | SEC_IN_MEMORY
1945 | (info->pie ? 0 : SEC_READONLY)
1946 | SEC_LINKER_CREATED))
1947 || !bfd_set_section_alignment (abfd, fptr, 4))
1949 BFD_ASSERT (0);
1950 return NULL;
1953 ia64_info->fptr_sec = fptr;
1955 if (info->pie)
1957 asection *fptr_rel;
1958 fptr_rel = bfd_make_section(abfd, ".rela.opd");
1959 if (fptr_rel == NULL
1960 || !bfd_set_section_flags (abfd, fptr_rel,
1961 (SEC_ALLOC | SEC_LOAD
1962 | SEC_HAS_CONTENTS
1963 | SEC_IN_MEMORY
1964 | SEC_LINKER_CREATED
1965 | SEC_READONLY))
1966 || !bfd_set_section_alignment (abfd, fptr_rel, 3))
1968 BFD_ASSERT (0);
1969 return NULL;
1972 ia64_info->rel_fptr_sec = fptr_rel;
1976 return fptr;
1979 static asection *
1980 get_pltoff (abfd, info, ia64_info)
1981 bfd *abfd;
1982 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1983 struct elfNN_ia64_link_hash_table *ia64_info;
1985 asection *pltoff;
1986 bfd *dynobj;
1988 pltoff = ia64_info->pltoff_sec;
1989 if (!pltoff)
1991 dynobj = ia64_info->root.dynobj;
1992 if (!dynobj)
1993 ia64_info->root.dynobj = dynobj = abfd;
1995 pltoff = bfd_make_section (dynobj, ELF_STRING_ia64_pltoff);
1996 if (!pltoff
1997 || !bfd_set_section_flags (dynobj, pltoff,
1998 (SEC_ALLOC
1999 | SEC_LOAD
2000 | SEC_HAS_CONTENTS
2001 | SEC_IN_MEMORY
2002 | SEC_SMALL_DATA
2003 | SEC_LINKER_CREATED))
2004 || !bfd_set_section_alignment (abfd, pltoff, 4))
2006 BFD_ASSERT (0);
2007 return NULL;
2010 ia64_info->pltoff_sec = pltoff;
2013 return pltoff;
2016 static asection *
2017 get_reloc_section (abfd, ia64_info, sec, create)
2018 bfd *abfd;
2019 struct elfNN_ia64_link_hash_table *ia64_info;
2020 asection *sec;
2021 bfd_boolean create;
2023 const char *srel_name;
2024 asection *srel;
2025 bfd *dynobj;
2027 srel_name = (bfd_elf_string_from_elf_section
2028 (abfd, elf_elfheader(abfd)->e_shstrndx,
2029 elf_section_data(sec)->rel_hdr.sh_name));
2030 if (srel_name == NULL)
2031 return NULL;
2033 BFD_ASSERT ((strncmp (srel_name, ".rela", 5) == 0
2034 && strcmp (bfd_get_section_name (abfd, sec),
2035 srel_name+5) == 0)
2036 || (strncmp (srel_name, ".rel", 4) == 0
2037 && strcmp (bfd_get_section_name (abfd, sec),
2038 srel_name+4) == 0));
2040 dynobj = ia64_info->root.dynobj;
2041 if (!dynobj)
2042 ia64_info->root.dynobj = dynobj = abfd;
2044 srel = bfd_get_section_by_name (dynobj, srel_name);
2045 if (srel == NULL && create)
2047 srel = bfd_make_section (dynobj, srel_name);
2048 if (srel == NULL
2049 || !bfd_set_section_flags (dynobj, srel,
2050 (SEC_ALLOC
2051 | SEC_LOAD
2052 | SEC_HAS_CONTENTS
2053 | SEC_IN_MEMORY
2054 | SEC_LINKER_CREATED
2055 | SEC_READONLY))
2056 || !bfd_set_section_alignment (dynobj, srel, 3))
2057 return NULL;
2060 if (sec->flags & SEC_READONLY)
2061 ia64_info->reltext = 1;
2063 return srel;
2066 static bfd_boolean
2067 count_dyn_reloc (abfd, dyn_i, srel, type)
2068 bfd *abfd;
2069 struct elfNN_ia64_dyn_sym_info *dyn_i;
2070 asection *srel;
2071 int type;
2073 struct elfNN_ia64_dyn_reloc_entry *rent;
2075 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2076 if (rent->srel == srel && rent->type == type)
2077 break;
2079 if (!rent)
2081 rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2082 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2083 if (!rent)
2084 return FALSE;
2086 rent->next = dyn_i->reloc_entries;
2087 rent->srel = srel;
2088 rent->type = type;
2089 rent->count = 0;
2090 dyn_i->reloc_entries = rent;
2092 rent->count++;
2094 return TRUE;
2097 static bfd_boolean
2098 elfNN_ia64_check_relocs (abfd, info, sec, relocs)
2099 bfd *abfd;
2100 struct bfd_link_info *info;
2101 asection *sec;
2102 const Elf_Internal_Rela *relocs;
2104 struct elfNN_ia64_link_hash_table *ia64_info;
2105 const Elf_Internal_Rela *relend;
2106 Elf_Internal_Shdr *symtab_hdr;
2107 const Elf_Internal_Rela *rel;
2108 asection *got, *fptr, *srel;
2110 if (info->relocatable)
2111 return TRUE;
2113 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2114 ia64_info = elfNN_ia64_hash_table (info);
2116 got = fptr = srel = NULL;
2118 relend = relocs + sec->reloc_count;
2119 for (rel = relocs; rel < relend; ++rel)
2121 enum {
2122 NEED_GOT = 1,
2123 NEED_GOTX = 2,
2124 NEED_FPTR = 4,
2125 NEED_PLTOFF = 8,
2126 NEED_MIN_PLT = 16,
2127 NEED_FULL_PLT = 32,
2128 NEED_DYNREL = 64,
2129 NEED_LTOFF_FPTR = 128,
2130 NEED_TPREL = 256,
2131 NEED_DTPMOD = 512,
2132 NEED_DTPREL = 1024
2135 struct elf_link_hash_entry *h = NULL;
2136 unsigned long r_symndx = ELFNN_R_SYM (rel->r_info);
2137 struct elfNN_ia64_dyn_sym_info *dyn_i;
2138 int need_entry;
2139 bfd_boolean maybe_dynamic;
2140 int dynrel_type = R_IA64_NONE;
2142 if (r_symndx >= symtab_hdr->sh_info)
2144 /* We're dealing with a global symbol -- find its hash entry
2145 and mark it as being referenced. */
2146 long indx = r_symndx - symtab_hdr->sh_info;
2147 h = elf_sym_hashes (abfd)[indx];
2148 while (h->root.type == bfd_link_hash_indirect
2149 || h->root.type == bfd_link_hash_warning)
2150 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2152 h->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
2155 /* We can only get preliminary data on whether a symbol is
2156 locally or externally defined, as not all of the input files
2157 have yet been processed. Do something with what we know, as
2158 this may help reduce memory usage and processing time later. */
2159 maybe_dynamic = FALSE;
2160 if (h && ((!info->executable
2161 && (!info->symbolic || info->allow_shlib_undefined))
2162 || ! (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
2163 || h->root.type == bfd_link_hash_defweak))
2164 maybe_dynamic = TRUE;
2166 need_entry = 0;
2167 switch (ELFNN_R_TYPE (rel->r_info))
2169 case R_IA64_TPREL64MSB:
2170 case R_IA64_TPREL64LSB:
2171 if (info->shared || maybe_dynamic)
2172 need_entry = NEED_DYNREL;
2173 dynrel_type = R_IA64_TPREL64LSB;
2174 if (info->shared)
2175 info->flags |= DF_STATIC_TLS;
2176 break;
2178 case R_IA64_LTOFF_TPREL22:
2179 need_entry = NEED_TPREL;
2180 if (info->shared)
2181 info->flags |= DF_STATIC_TLS;
2182 break;
2184 case R_IA64_DTPREL64MSB:
2185 case R_IA64_DTPREL64LSB:
2186 if (info->shared || maybe_dynamic)
2187 need_entry = NEED_DYNREL;
2188 dynrel_type = R_IA64_DTPREL64LSB;
2189 break;
2191 case R_IA64_LTOFF_DTPREL22:
2192 need_entry = NEED_DTPREL;
2193 break;
2195 case R_IA64_DTPMOD64MSB:
2196 case R_IA64_DTPMOD64LSB:
2197 if (info->shared || maybe_dynamic)
2198 need_entry = NEED_DYNREL;
2199 dynrel_type = R_IA64_DTPMOD64LSB;
2200 break;
2202 case R_IA64_LTOFF_DTPMOD22:
2203 need_entry = NEED_DTPMOD;
2204 break;
2206 case R_IA64_LTOFF_FPTR22:
2207 case R_IA64_LTOFF_FPTR64I:
2208 case R_IA64_LTOFF_FPTR32MSB:
2209 case R_IA64_LTOFF_FPTR32LSB:
2210 case R_IA64_LTOFF_FPTR64MSB:
2211 case R_IA64_LTOFF_FPTR64LSB:
2212 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2213 break;
2215 case R_IA64_FPTR64I:
2216 case R_IA64_FPTR32MSB:
2217 case R_IA64_FPTR32LSB:
2218 case R_IA64_FPTR64MSB:
2219 case R_IA64_FPTR64LSB:
2220 if (info->shared || h)
2221 need_entry = NEED_FPTR | NEED_DYNREL;
2222 else
2223 need_entry = NEED_FPTR;
2224 dynrel_type = R_IA64_FPTR64LSB;
2225 break;
2227 case R_IA64_LTOFF22:
2228 case R_IA64_LTOFF64I:
2229 need_entry = NEED_GOT;
2230 break;
2232 case R_IA64_LTOFF22X:
2233 need_entry = NEED_GOTX;
2234 break;
2236 case R_IA64_PLTOFF22:
2237 case R_IA64_PLTOFF64I:
2238 case R_IA64_PLTOFF64MSB:
2239 case R_IA64_PLTOFF64LSB:
2240 need_entry = NEED_PLTOFF;
2241 if (h)
2243 if (maybe_dynamic)
2244 need_entry |= NEED_MIN_PLT;
2246 else
2248 (*info->callbacks->warning)
2249 (info, _("@pltoff reloc against local symbol"), 0,
2250 abfd, 0, (bfd_vma) 0);
2252 break;
2254 case R_IA64_PCREL21B:
2255 case R_IA64_PCREL60B:
2256 /* Depending on where this symbol is defined, we may or may not
2257 need a full plt entry. Only skip if we know we'll not need
2258 the entry -- static or symbolic, and the symbol definition
2259 has already been seen. */
2260 if (maybe_dynamic && rel->r_addend == 0)
2261 need_entry = NEED_FULL_PLT;
2262 break;
2264 case R_IA64_IMM14:
2265 case R_IA64_IMM22:
2266 case R_IA64_IMM64:
2267 case R_IA64_DIR32MSB:
2268 case R_IA64_DIR32LSB:
2269 case R_IA64_DIR64MSB:
2270 case R_IA64_DIR64LSB:
2271 /* Shared objects will always need at least a REL relocation. */
2272 if (info->shared || maybe_dynamic)
2273 need_entry = NEED_DYNREL;
2274 dynrel_type = R_IA64_DIR64LSB;
2275 break;
2277 case R_IA64_IPLTMSB:
2278 case R_IA64_IPLTLSB:
2279 /* Shared objects will always need at least a REL relocation. */
2280 if (info->shared || maybe_dynamic)
2281 need_entry = NEED_DYNREL;
2282 dynrel_type = R_IA64_IPLTLSB;
2283 break;
2285 case R_IA64_PCREL22:
2286 case R_IA64_PCREL64I:
2287 case R_IA64_PCREL32MSB:
2288 case R_IA64_PCREL32LSB:
2289 case R_IA64_PCREL64MSB:
2290 case R_IA64_PCREL64LSB:
2291 if (maybe_dynamic)
2292 need_entry = NEED_DYNREL;
2293 dynrel_type = R_IA64_PCREL64LSB;
2294 break;
2297 if (!need_entry)
2298 continue;
2300 if ((need_entry & NEED_FPTR) != 0
2301 && rel->r_addend)
2303 (*info->callbacks->warning)
2304 (info, _("non-zero addend in @fptr reloc"), 0,
2305 abfd, 0, (bfd_vma) 0);
2308 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE);
2310 /* Record whether or not this is a local symbol. */
2311 dyn_i->h = h;
2313 /* Create what's needed. */
2314 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2315 | NEED_DTPMOD | NEED_DTPREL))
2317 if (!got)
2319 got = get_got (abfd, info, ia64_info);
2320 if (!got)
2321 return FALSE;
2323 if (need_entry & NEED_GOT)
2324 dyn_i->want_got = 1;
2325 if (need_entry & NEED_GOTX)
2326 dyn_i->want_gotx = 1;
2327 if (need_entry & NEED_TPREL)
2328 dyn_i->want_tprel = 1;
2329 if (need_entry & NEED_DTPMOD)
2330 dyn_i->want_dtpmod = 1;
2331 if (need_entry & NEED_DTPREL)
2332 dyn_i->want_dtprel = 1;
2334 if (need_entry & NEED_FPTR)
2336 if (!fptr)
2338 fptr = get_fptr (abfd, info, ia64_info);
2339 if (!fptr)
2340 return FALSE;
2343 /* FPTRs for shared libraries are allocated by the dynamic
2344 linker. Make sure this local symbol will appear in the
2345 dynamic symbol table. */
2346 if (!h && info->shared)
2348 if (! (_bfd_elfNN_link_record_local_dynamic_symbol
2349 (info, abfd, (long) r_symndx)))
2350 return FALSE;
2353 dyn_i->want_fptr = 1;
2355 if (need_entry & NEED_LTOFF_FPTR)
2356 dyn_i->want_ltoff_fptr = 1;
2357 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2359 if (!ia64_info->root.dynobj)
2360 ia64_info->root.dynobj = abfd;
2361 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2362 dyn_i->want_plt = 1;
2364 if (need_entry & NEED_FULL_PLT)
2365 dyn_i->want_plt2 = 1;
2366 if (need_entry & NEED_PLTOFF)
2367 dyn_i->want_pltoff = 1;
2368 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2370 if (!srel)
2372 srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2373 if (!srel)
2374 return FALSE;
2376 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type))
2377 return FALSE;
2381 return TRUE;
2384 /* For cleanliness, and potentially faster dynamic loading, allocate
2385 external GOT entries first. */
2387 static bfd_boolean
2388 allocate_global_data_got (dyn_i, data)
2389 struct elfNN_ia64_dyn_sym_info *dyn_i;
2390 PTR data;
2392 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2394 if ((dyn_i->want_got || dyn_i->want_gotx)
2395 && ! dyn_i->want_fptr
2396 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2398 dyn_i->got_offset = x->ofs;
2399 x->ofs += 8;
2401 if (dyn_i->want_tprel)
2403 dyn_i->tprel_offset = x->ofs;
2404 x->ofs += 8;
2406 if (dyn_i->want_dtpmod)
2408 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2410 dyn_i->dtpmod_offset = x->ofs;
2411 x->ofs += 8;
2413 else
2415 struct elfNN_ia64_link_hash_table *ia64_info;
2417 ia64_info = elfNN_ia64_hash_table (x->info);
2418 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2420 ia64_info->self_dtpmod_offset = x->ofs;
2421 x->ofs += 8;
2423 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2426 if (dyn_i->want_dtprel)
2428 dyn_i->dtprel_offset = x->ofs;
2429 x->ofs += 8;
2431 return TRUE;
2434 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2436 static bfd_boolean
2437 allocate_global_fptr_got (dyn_i, data)
2438 struct elfNN_ia64_dyn_sym_info *dyn_i;
2439 PTR data;
2441 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2443 if (dyn_i->want_got
2444 && dyn_i->want_fptr
2445 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTR64LSB))
2447 dyn_i->got_offset = x->ofs;
2448 x->ofs += 8;
2450 return TRUE;
2453 /* Lastly, allocate all the GOT entries for local data. */
2455 static bfd_boolean
2456 allocate_local_got (dyn_i, data)
2457 struct elfNN_ia64_dyn_sym_info *dyn_i;
2458 PTR data;
2460 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2462 if ((dyn_i->want_got || dyn_i->want_gotx)
2463 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2465 dyn_i->got_offset = x->ofs;
2466 x->ofs += 8;
2468 return TRUE;
2471 /* Search for the index of a global symbol in it's defining object file. */
2473 static long
2474 global_sym_index (h)
2475 struct elf_link_hash_entry *h;
2477 struct elf_link_hash_entry **p;
2478 bfd *obj;
2480 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2481 || h->root.type == bfd_link_hash_defweak);
2483 obj = h->root.u.def.section->owner;
2484 for (p = elf_sym_hashes (obj); *p != h; ++p)
2485 continue;
2487 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2490 /* Allocate function descriptors. We can do these for every function
2491 in a main executable that is not exported. */
2493 static bfd_boolean
2494 allocate_fptr (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_fptr)
2502 struct elf_link_hash_entry *h = dyn_i->h;
2504 if (h)
2505 while (h->root.type == bfd_link_hash_indirect
2506 || h->root.type == bfd_link_hash_warning)
2507 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2509 if (!x->info->executable
2510 && (!h
2511 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2512 || h->root.type != bfd_link_hash_undefweak))
2514 if (h && h->dynindx == -1)
2516 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2517 || (h->root.type == bfd_link_hash_defweak));
2519 if (!_bfd_elfNN_link_record_local_dynamic_symbol
2520 (x->info, h->root.u.def.section->owner,
2521 global_sym_index (h)))
2522 return FALSE;
2525 dyn_i->want_fptr = 0;
2527 else if (h == NULL || h->dynindx == -1)
2529 dyn_i->fptr_offset = x->ofs;
2530 x->ofs += 16;
2532 else
2533 dyn_i->want_fptr = 0;
2535 return TRUE;
2538 /* Allocate all the minimal PLT entries. */
2540 static bfd_boolean
2541 allocate_plt_entries (dyn_i, data)
2542 struct elfNN_ia64_dyn_sym_info *dyn_i;
2543 PTR data;
2545 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2547 if (dyn_i->want_plt)
2549 struct elf_link_hash_entry *h = dyn_i->h;
2551 if (h)
2552 while (h->root.type == bfd_link_hash_indirect
2553 || h->root.type == bfd_link_hash_warning)
2554 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2556 /* ??? Versioned symbols seem to lose ELF_LINK_HASH_NEEDS_PLT. */
2557 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2559 bfd_size_type offset = x->ofs;
2560 if (offset == 0)
2561 offset = PLT_HEADER_SIZE;
2562 dyn_i->plt_offset = offset;
2563 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2565 dyn_i->want_pltoff = 1;
2567 else
2569 dyn_i->want_plt = 0;
2570 dyn_i->want_plt2 = 0;
2573 return TRUE;
2576 /* Allocate all the full PLT entries. */
2578 static bfd_boolean
2579 allocate_plt2_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_plt2)
2587 struct elf_link_hash_entry *h = dyn_i->h;
2588 bfd_size_type ofs = x->ofs;
2590 dyn_i->plt2_offset = ofs;
2591 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2593 while (h->root.type == bfd_link_hash_indirect
2594 || h->root.type == bfd_link_hash_warning)
2595 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2596 dyn_i->h->plt.offset = ofs;
2598 return TRUE;
2601 /* Allocate all the PLTOFF entries requested by relocations and
2602 plt entries. We can't share space with allocated FPTR entries,
2603 because the latter are not necessarily addressable by the GP.
2604 ??? Relaxation might be able to determine that they are. */
2606 static bfd_boolean
2607 allocate_pltoff_entries (dyn_i, data)
2608 struct elfNN_ia64_dyn_sym_info *dyn_i;
2609 PTR data;
2611 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2613 if (dyn_i->want_pltoff)
2615 dyn_i->pltoff_offset = x->ofs;
2616 x->ofs += 16;
2618 return TRUE;
2621 /* Allocate dynamic relocations for those symbols that turned out
2622 to be dynamic. */
2624 static bfd_boolean
2625 allocate_dynrel_entries (dyn_i, data)
2626 struct elfNN_ia64_dyn_sym_info *dyn_i;
2627 PTR data;
2629 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2630 struct elfNN_ia64_link_hash_table *ia64_info;
2631 struct elfNN_ia64_dyn_reloc_entry *rent;
2632 bfd_boolean dynamic_symbol, shared, resolved_zero;
2634 ia64_info = elfNN_ia64_hash_table (x->info);
2636 /* Note that this can't be used in relation to FPTR relocs below. */
2637 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2639 shared = x->info->shared;
2640 resolved_zero = (dyn_i->h
2641 && ELF_ST_VISIBILITY (dyn_i->h->other)
2642 && dyn_i->h->root.type == bfd_link_hash_undefweak);
2644 /* Take care of the normal data relocations. */
2646 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2648 int count = rent->count;
2650 switch (rent->type)
2652 case R_IA64_FPTR64LSB:
2653 /* Allocate one iff !want_fptr and not PIE, which by this point
2654 will be true only if we're actually allocating one statically
2655 in the main executable. Position independent executables
2656 need a relative reloc. */
2657 if (dyn_i->want_fptr && !x->info->pie)
2658 continue;
2659 break;
2660 case R_IA64_PCREL64LSB:
2661 if (!dynamic_symbol)
2662 continue;
2663 break;
2664 case R_IA64_DIR64LSB:
2665 if (!dynamic_symbol && !shared)
2666 continue;
2667 break;
2668 case R_IA64_IPLTLSB:
2669 if (!dynamic_symbol && !shared)
2670 continue;
2671 /* Use two REL relocations for IPLT relocations
2672 against local symbols. */
2673 if (!dynamic_symbol)
2674 count *= 2;
2675 break;
2676 case R_IA64_TPREL64LSB:
2677 case R_IA64_DTPREL64LSB:
2678 case R_IA64_DTPMOD64LSB:
2679 break;
2680 default:
2681 abort ();
2683 rent->srel->_raw_size += sizeof (ElfNN_External_Rela) * count;
2686 /* Take care of the GOT and PLT relocations. */
2688 if ((!resolved_zero
2689 && (dynamic_symbol || shared)
2690 && (dyn_i->want_got || dyn_i->want_gotx))
2691 || (dyn_i->want_ltoff_fptr
2692 && dyn_i->h
2693 && dyn_i->h->dynindx != -1))
2695 if (!dyn_i->want_ltoff_fptr
2696 || !x->info->pie
2697 || dyn_i->h == NULL
2698 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2699 ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
2701 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2702 ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
2703 if (dynamic_symbol && dyn_i->want_dtpmod)
2704 ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
2705 if (dynamic_symbol && dyn_i->want_dtprel)
2706 ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
2707 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2709 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2710 ia64_info->rel_fptr_sec->_raw_size += sizeof (ElfNN_External_Rela);
2713 if (!resolved_zero && dyn_i->want_pltoff)
2715 bfd_size_type t = 0;
2717 /* Dynamic symbols get one IPLT relocation. Local symbols in
2718 shared libraries get two REL relocations. Local symbols in
2719 main applications get nothing. */
2720 if (dynamic_symbol)
2721 t = sizeof (ElfNN_External_Rela);
2722 else if (shared)
2723 t = 2 * sizeof (ElfNN_External_Rela);
2725 ia64_info->rel_pltoff_sec->_raw_size += t;
2728 return TRUE;
2731 static bfd_boolean
2732 elfNN_ia64_adjust_dynamic_symbol (info, h)
2733 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2734 struct elf_link_hash_entry *h;
2736 /* ??? Undefined symbols with PLT entries should be re-defined
2737 to be the PLT entry. */
2739 /* If this is a weak symbol, and there is a real definition, the
2740 processor independent code will have arranged for us to see the
2741 real definition first, and we can just use the same value. */
2742 if (h->weakdef != NULL)
2744 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2745 || h->weakdef->root.type == bfd_link_hash_defweak);
2746 h->root.u.def.section = h->weakdef->root.u.def.section;
2747 h->root.u.def.value = h->weakdef->root.u.def.value;
2748 return TRUE;
2751 /* If this is a reference to a symbol defined by a dynamic object which
2752 is not a function, we might allocate the symbol in our .dynbss section
2753 and allocate a COPY dynamic relocation.
2755 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2756 of hackery. */
2758 return TRUE;
2761 static bfd_boolean
2762 elfNN_ia64_size_dynamic_sections (output_bfd, info)
2763 bfd *output_bfd ATTRIBUTE_UNUSED;
2764 struct bfd_link_info *info;
2766 struct elfNN_ia64_allocate_data data;
2767 struct elfNN_ia64_link_hash_table *ia64_info;
2768 asection *sec;
2769 bfd *dynobj;
2770 bfd_boolean relplt = FALSE;
2772 dynobj = elf_hash_table(info)->dynobj;
2773 ia64_info = elfNN_ia64_hash_table (info);
2774 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
2775 BFD_ASSERT(dynobj != NULL);
2776 data.info = info;
2778 /* Set the contents of the .interp section to the interpreter. */
2779 if (ia64_info->root.dynamic_sections_created
2780 && info->executable)
2782 sec = bfd_get_section_by_name (dynobj, ".interp");
2783 BFD_ASSERT (sec != NULL);
2784 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
2785 sec->_raw_size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
2788 /* Allocate the GOT entries. */
2790 if (ia64_info->got_sec)
2792 data.ofs = 0;
2793 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
2794 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
2795 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
2796 ia64_info->got_sec->_raw_size = data.ofs;
2799 /* Allocate the FPTR entries. */
2801 if (ia64_info->fptr_sec)
2803 data.ofs = 0;
2804 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
2805 ia64_info->fptr_sec->_raw_size = data.ofs;
2808 /* Now that we've seen all of the input files, we can decide which
2809 symbols need plt entries. Allocate the minimal PLT entries first.
2810 We do this even though dynamic_sections_created may be FALSE, because
2811 this has the side-effect of clearing want_plt and want_plt2. */
2813 data.ofs = 0;
2814 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
2816 ia64_info->minplt_entries = 0;
2817 if (data.ofs)
2819 ia64_info->minplt_entries
2820 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
2823 /* Align the pointer for the plt2 entries. */
2824 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
2826 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
2827 if (data.ofs != 0)
2829 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
2831 ia64_info->plt_sec->_raw_size = data.ofs;
2833 /* If we've got a .plt, we need some extra memory for the dynamic
2834 linker. We stuff these in .got.plt. */
2835 sec = bfd_get_section_by_name (dynobj, ".got.plt");
2836 sec->_raw_size = 8 * PLT_RESERVED_WORDS;
2839 /* Allocate the PLTOFF entries. */
2841 if (ia64_info->pltoff_sec)
2843 data.ofs = 0;
2844 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
2845 ia64_info->pltoff_sec->_raw_size = data.ofs;
2848 if (ia64_info->root.dynamic_sections_created)
2850 /* Allocate space for the dynamic relocations that turned out to be
2851 required. */
2853 if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
2854 ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
2855 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
2858 /* We have now determined the sizes of the various dynamic sections.
2859 Allocate memory for them. */
2860 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2862 bfd_boolean strip;
2864 if (!(sec->flags & SEC_LINKER_CREATED))
2865 continue;
2867 /* If we don't need this section, strip it from the output file.
2868 There were several sections primarily related to dynamic
2869 linking that must be create before the linker maps input
2870 sections to output sections. The linker does that before
2871 bfd_elf_size_dynamic_sections is called, and it is that
2872 function which decides whether anything needs to go into
2873 these sections. */
2875 strip = (sec->_raw_size == 0);
2877 if (sec == ia64_info->got_sec)
2878 strip = FALSE;
2879 else if (sec == ia64_info->rel_got_sec)
2881 if (strip)
2882 ia64_info->rel_got_sec = NULL;
2883 else
2884 /* We use the reloc_count field as a counter if we need to
2885 copy relocs into the output file. */
2886 sec->reloc_count = 0;
2888 else if (sec == ia64_info->fptr_sec)
2890 if (strip)
2891 ia64_info->fptr_sec = NULL;
2893 else if (sec == ia64_info->plt_sec)
2895 if (strip)
2896 ia64_info->plt_sec = NULL;
2898 else if (sec == ia64_info->pltoff_sec)
2900 if (strip)
2901 ia64_info->pltoff_sec = NULL;
2903 else if (sec == ia64_info->rel_pltoff_sec)
2905 if (strip)
2906 ia64_info->rel_pltoff_sec = NULL;
2907 else
2909 relplt = TRUE;
2910 /* We use the reloc_count field as a counter if we need to
2911 copy relocs into the output file. */
2912 sec->reloc_count = 0;
2915 else
2917 const char *name;
2919 /* It's OK to base decisions on the section name, because none
2920 of the dynobj section names depend upon the input files. */
2921 name = bfd_get_section_name (dynobj, sec);
2923 if (strcmp (name, ".got.plt") == 0)
2924 strip = FALSE;
2925 else if (strncmp (name, ".rel", 4) == 0)
2927 if (!strip)
2929 /* We use the reloc_count field as a counter if we need to
2930 copy relocs into the output file. */
2931 sec->reloc_count = 0;
2934 else
2935 continue;
2938 if (strip)
2939 _bfd_strip_section_from_output (info, sec);
2940 else
2942 /* Allocate memory for the section contents. */
2943 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->_raw_size);
2944 if (sec->contents == NULL && sec->_raw_size != 0)
2945 return FALSE;
2949 if (elf_hash_table (info)->dynamic_sections_created)
2951 /* Add some entries to the .dynamic section. We fill in the values
2952 later (in finish_dynamic_sections) but we must add the entries now
2953 so that we get the correct size for the .dynamic section. */
2955 if (info->executable)
2957 /* The DT_DEBUG entry is filled in by the dynamic linker and used
2958 by the debugger. */
2959 #define add_dynamic_entry(TAG, VAL) \
2960 bfd_elfNN_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2962 if (!add_dynamic_entry (DT_DEBUG, 0))
2963 return FALSE;
2966 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
2967 return FALSE;
2968 if (!add_dynamic_entry (DT_PLTGOT, 0))
2969 return FALSE;
2971 if (relplt)
2973 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2974 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2975 || !add_dynamic_entry (DT_JMPREL, 0))
2976 return FALSE;
2979 if (!add_dynamic_entry (DT_RELA, 0)
2980 || !add_dynamic_entry (DT_RELASZ, 0)
2981 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
2982 return FALSE;
2984 if (ia64_info->reltext)
2986 if (!add_dynamic_entry (DT_TEXTREL, 0))
2987 return FALSE;
2988 info->flags |= DF_TEXTREL;
2992 /* ??? Perhaps force __gp local. */
2994 return TRUE;
2997 static bfd_reloc_status_type
2998 elfNN_ia64_install_value (abfd, hit_addr, v, r_type)
2999 bfd *abfd;
3000 bfd_byte *hit_addr;
3001 bfd_vma v;
3002 unsigned int r_type;
3004 const struct ia64_operand *op;
3005 int bigendian = 0, shift = 0;
3006 bfd_vma t0, t1, insn, dword;
3007 enum ia64_opnd opnd;
3008 const char *err;
3009 size_t size = 8;
3010 #ifdef BFD_HOST_U_64_BIT
3011 BFD_HOST_U_64_BIT val = (BFD_HOST_U_64_BIT) v;
3012 #else
3013 bfd_vma val = v;
3014 #endif
3016 opnd = IA64_OPND_NIL;
3017 switch (r_type)
3019 case R_IA64_NONE:
3020 case R_IA64_LDXMOV:
3021 return bfd_reloc_ok;
3023 /* Instruction relocations. */
3025 case R_IA64_IMM14:
3026 case R_IA64_TPREL14:
3027 case R_IA64_DTPREL14:
3028 opnd = IA64_OPND_IMM14;
3029 break;
3031 case R_IA64_PCREL21F: opnd = IA64_OPND_TGT25; break;
3032 case R_IA64_PCREL21M: opnd = IA64_OPND_TGT25b; break;
3033 case R_IA64_PCREL60B: opnd = IA64_OPND_TGT64; break;
3034 case R_IA64_PCREL21B:
3035 case R_IA64_PCREL21BI:
3036 opnd = IA64_OPND_TGT25c;
3037 break;
3039 case R_IA64_IMM22:
3040 case R_IA64_GPREL22:
3041 case R_IA64_LTOFF22:
3042 case R_IA64_LTOFF22X:
3043 case R_IA64_PLTOFF22:
3044 case R_IA64_PCREL22:
3045 case R_IA64_LTOFF_FPTR22:
3046 case R_IA64_TPREL22:
3047 case R_IA64_DTPREL22:
3048 case R_IA64_LTOFF_TPREL22:
3049 case R_IA64_LTOFF_DTPMOD22:
3050 case R_IA64_LTOFF_DTPREL22:
3051 opnd = IA64_OPND_IMM22;
3052 break;
3054 case R_IA64_IMM64:
3055 case R_IA64_GPREL64I:
3056 case R_IA64_LTOFF64I:
3057 case R_IA64_PLTOFF64I:
3058 case R_IA64_PCREL64I:
3059 case R_IA64_FPTR64I:
3060 case R_IA64_LTOFF_FPTR64I:
3061 case R_IA64_TPREL64I:
3062 case R_IA64_DTPREL64I:
3063 opnd = IA64_OPND_IMMU64;
3064 break;
3066 /* Data relocations. */
3068 case R_IA64_DIR32MSB:
3069 case R_IA64_GPREL32MSB:
3070 case R_IA64_FPTR32MSB:
3071 case R_IA64_PCREL32MSB:
3072 case R_IA64_LTOFF_FPTR32MSB:
3073 case R_IA64_SEGREL32MSB:
3074 case R_IA64_SECREL32MSB:
3075 case R_IA64_LTV32MSB:
3076 case R_IA64_DTPREL32MSB:
3077 size = 4; bigendian = 1;
3078 break;
3080 case R_IA64_DIR32LSB:
3081 case R_IA64_GPREL32LSB:
3082 case R_IA64_FPTR32LSB:
3083 case R_IA64_PCREL32LSB:
3084 case R_IA64_LTOFF_FPTR32LSB:
3085 case R_IA64_SEGREL32LSB:
3086 case R_IA64_SECREL32LSB:
3087 case R_IA64_LTV32LSB:
3088 case R_IA64_DTPREL32LSB:
3089 size = 4; bigendian = 0;
3090 break;
3092 case R_IA64_DIR64MSB:
3093 case R_IA64_GPREL64MSB:
3094 case R_IA64_PLTOFF64MSB:
3095 case R_IA64_FPTR64MSB:
3096 case R_IA64_PCREL64MSB:
3097 case R_IA64_LTOFF_FPTR64MSB:
3098 case R_IA64_SEGREL64MSB:
3099 case R_IA64_SECREL64MSB:
3100 case R_IA64_LTV64MSB:
3101 case R_IA64_TPREL64MSB:
3102 case R_IA64_DTPMOD64MSB:
3103 case R_IA64_DTPREL64MSB:
3104 size = 8; bigendian = 1;
3105 break;
3107 case R_IA64_DIR64LSB:
3108 case R_IA64_GPREL64LSB:
3109 case R_IA64_PLTOFF64LSB:
3110 case R_IA64_FPTR64LSB:
3111 case R_IA64_PCREL64LSB:
3112 case R_IA64_LTOFF_FPTR64LSB:
3113 case R_IA64_SEGREL64LSB:
3114 case R_IA64_SECREL64LSB:
3115 case R_IA64_LTV64LSB:
3116 case R_IA64_TPREL64LSB:
3117 case R_IA64_DTPMOD64LSB:
3118 case R_IA64_DTPREL64LSB:
3119 size = 8; bigendian = 0;
3120 break;
3122 /* Unsupported / Dynamic relocations. */
3123 default:
3124 return bfd_reloc_notsupported;
3127 switch (opnd)
3129 case IA64_OPND_IMMU64:
3130 hit_addr -= (long) hit_addr & 0x3;
3131 t0 = bfd_get_64 (abfd, hit_addr);
3132 t1 = bfd_get_64 (abfd, hit_addr + 8);
3134 /* tmpl/s: bits 0.. 5 in t0
3135 slot 0: bits 5..45 in t0
3136 slot 1: bits 46..63 in t0, bits 0..22 in t1
3137 slot 2: bits 23..63 in t1 */
3139 /* First, clear the bits that form the 64 bit constant. */
3140 t0 &= ~(0x3ffffLL << 46);
3141 t1 &= ~(0x7fffffLL
3142 | (( (0x07fLL << 13) | (0x1ffLL << 27)
3143 | (0x01fLL << 22) | (0x001LL << 21)
3144 | (0x001LL << 36)) << 23));
3146 t0 |= ((val >> 22) & 0x03ffffLL) << 46; /* 18 lsbs of imm41 */
3147 t1 |= ((val >> 40) & 0x7fffffLL) << 0; /* 23 msbs of imm41 */
3148 t1 |= ( (((val >> 0) & 0x07f) << 13) /* imm7b */
3149 | (((val >> 7) & 0x1ff) << 27) /* imm9d */
3150 | (((val >> 16) & 0x01f) << 22) /* imm5c */
3151 | (((val >> 21) & 0x001) << 21) /* ic */
3152 | (((val >> 63) & 0x001) << 36)) << 23; /* i */
3154 bfd_put_64 (abfd, t0, hit_addr);
3155 bfd_put_64 (abfd, t1, hit_addr + 8);
3156 break;
3158 case IA64_OPND_TGT64:
3159 hit_addr -= (long) hit_addr & 0x3;
3160 t0 = bfd_get_64 (abfd, hit_addr);
3161 t1 = bfd_get_64 (abfd, hit_addr + 8);
3163 /* tmpl/s: bits 0.. 5 in t0
3164 slot 0: bits 5..45 in t0
3165 slot 1: bits 46..63 in t0, bits 0..22 in t1
3166 slot 2: bits 23..63 in t1 */
3168 /* First, clear the bits that form the 64 bit constant. */
3169 t0 &= ~(0x3ffffLL << 46);
3170 t1 &= ~(0x7fffffLL
3171 | ((1LL << 36 | 0xfffffLL << 13) << 23));
3173 val >>= 4;
3174 t0 |= ((val >> 20) & 0xffffLL) << 2 << 46; /* 16 lsbs of imm39 */
3175 t1 |= ((val >> 36) & 0x7fffffLL) << 0; /* 23 msbs of imm39 */
3176 t1 |= ((((val >> 0) & 0xfffffLL) << 13) /* imm20b */
3177 | (((val >> 59) & 0x1LL) << 36)) << 23; /* i */
3179 bfd_put_64 (abfd, t0, hit_addr);
3180 bfd_put_64 (abfd, t1, hit_addr + 8);
3181 break;
3183 default:
3184 switch ((long) hit_addr & 0x3)
3186 case 0: shift = 5; break;
3187 case 1: shift = 14; hit_addr += 3; break;
3188 case 2: shift = 23; hit_addr += 6; break;
3189 case 3: return bfd_reloc_notsupported; /* shouldn't happen... */
3191 dword = bfd_get_64 (abfd, hit_addr);
3192 insn = (dword >> shift) & 0x1ffffffffffLL;
3194 op = elf64_ia64_operands + opnd;
3195 err = (*op->insert) (op, val, (ia64_insn *)& insn);
3196 if (err)
3197 return bfd_reloc_overflow;
3199 dword &= ~(0x1ffffffffffLL << shift);
3200 dword |= (insn << shift);
3201 bfd_put_64 (abfd, dword, hit_addr);
3202 break;
3204 case IA64_OPND_NIL:
3205 /* A data relocation. */
3206 if (bigendian)
3207 if (size == 4)
3208 bfd_putb32 (val, hit_addr);
3209 else
3210 bfd_putb64 (val, hit_addr);
3211 else
3212 if (size == 4)
3213 bfd_putl32 (val, hit_addr);
3214 else
3215 bfd_putl64 (val, hit_addr);
3216 break;
3219 return bfd_reloc_ok;
3222 static void
3223 elfNN_ia64_install_dyn_reloc (abfd, info, sec, srel, offset, type,
3224 dynindx, addend)
3225 bfd *abfd;
3226 struct bfd_link_info *info;
3227 asection *sec;
3228 asection *srel;
3229 bfd_vma offset;
3230 unsigned int type;
3231 long dynindx;
3232 bfd_vma addend;
3234 Elf_Internal_Rela outrel;
3235 bfd_byte *loc;
3237 BFD_ASSERT (dynindx != -1);
3238 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3239 outrel.r_addend = addend;
3240 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3241 if (outrel.r_offset >= (bfd_vma) -2)
3243 /* Run for the hills. We shouldn't be outputting a relocation
3244 for this. So do what everyone else does and output a no-op. */
3245 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3246 outrel.r_addend = 0;
3247 outrel.r_offset = 0;
3249 else
3250 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3252 loc = srel->contents;
3253 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3254 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3255 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count
3256 <= srel->_cooked_size);
3259 /* Store an entry for target address TARGET_ADDR in the linkage table
3260 and return the gp-relative address of the linkage table entry. */
3262 static bfd_vma
3263 set_got_entry (abfd, info, dyn_i, dynindx, addend, value, dyn_r_type)
3264 bfd *abfd;
3265 struct bfd_link_info *info;
3266 struct elfNN_ia64_dyn_sym_info *dyn_i;
3267 long dynindx;
3268 bfd_vma addend;
3269 bfd_vma value;
3270 unsigned int dyn_r_type;
3272 struct elfNN_ia64_link_hash_table *ia64_info;
3273 asection *got_sec;
3274 bfd_boolean done;
3275 bfd_vma got_offset;
3277 ia64_info = elfNN_ia64_hash_table (info);
3278 got_sec = ia64_info->got_sec;
3280 switch (dyn_r_type)
3282 case R_IA64_TPREL64LSB:
3283 done = dyn_i->tprel_done;
3284 dyn_i->tprel_done = TRUE;
3285 got_offset = dyn_i->tprel_offset;
3286 break;
3287 case R_IA64_DTPMOD64LSB:
3288 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3290 done = dyn_i->dtpmod_done;
3291 dyn_i->dtpmod_done = TRUE;
3293 else
3295 done = ia64_info->self_dtpmod_done;
3296 ia64_info->self_dtpmod_done = TRUE;
3297 dynindx = 0;
3299 got_offset = dyn_i->dtpmod_offset;
3300 break;
3301 case R_IA64_DTPREL64LSB:
3302 done = dyn_i->dtprel_done;
3303 dyn_i->dtprel_done = TRUE;
3304 got_offset = dyn_i->dtprel_offset;
3305 break;
3306 default:
3307 done = dyn_i->got_done;
3308 dyn_i->got_done = TRUE;
3309 got_offset = dyn_i->got_offset;
3310 break;
3313 BFD_ASSERT ((got_offset & 7) == 0);
3315 if (! done)
3317 /* Store the target address in the linkage table entry. */
3318 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3320 /* Install a dynamic relocation if needed. */
3321 if (((info->shared
3322 && (!dyn_i->h
3323 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3324 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3325 && dyn_r_type != R_IA64_DTPREL64LSB)
3326 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3327 || (dynindx != -1 && dyn_r_type == R_IA64_FPTR64LSB))
3328 && (!dyn_i->want_ltoff_fptr
3329 || !info->pie
3330 || !dyn_i->h
3331 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3333 if (dynindx == -1
3334 && dyn_r_type != R_IA64_TPREL64LSB
3335 && dyn_r_type != R_IA64_DTPMOD64LSB
3336 && dyn_r_type != R_IA64_DTPREL64LSB)
3338 dyn_r_type = R_IA64_REL64LSB;
3339 dynindx = 0;
3340 addend = value;
3343 if (bfd_big_endian (abfd))
3345 switch (dyn_r_type)
3347 case R_IA64_REL64LSB:
3348 dyn_r_type = R_IA64_REL64MSB;
3349 break;
3350 case R_IA64_DIR64LSB:
3351 dyn_r_type = R_IA64_DIR64MSB;
3352 break;
3353 case R_IA64_FPTR64LSB:
3354 dyn_r_type = R_IA64_FPTR64MSB;
3355 break;
3356 case R_IA64_TPREL64LSB:
3357 dyn_r_type = R_IA64_TPREL64MSB;
3358 break;
3359 case R_IA64_DTPMOD64LSB:
3360 dyn_r_type = R_IA64_DTPMOD64MSB;
3361 break;
3362 case R_IA64_DTPREL64LSB:
3363 dyn_r_type = R_IA64_DTPREL64MSB;
3364 break;
3365 default:
3366 BFD_ASSERT (FALSE);
3367 break;
3371 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3372 ia64_info->rel_got_sec,
3373 got_offset, dyn_r_type,
3374 dynindx, addend);
3378 /* Return the address of the linkage table entry. */
3379 value = (got_sec->output_section->vma
3380 + got_sec->output_offset
3381 + got_offset);
3383 return value;
3386 /* Fill in a function descriptor consisting of the function's code
3387 address and its global pointer. Return the descriptor's address. */
3389 static bfd_vma
3390 set_fptr_entry (abfd, info, dyn_i, value)
3391 bfd *abfd;
3392 struct bfd_link_info *info;
3393 struct elfNN_ia64_dyn_sym_info *dyn_i;
3394 bfd_vma value;
3396 struct elfNN_ia64_link_hash_table *ia64_info;
3397 asection *fptr_sec;
3399 ia64_info = elfNN_ia64_hash_table (info);
3400 fptr_sec = ia64_info->fptr_sec;
3402 if (!dyn_i->fptr_done)
3404 dyn_i->fptr_done = 1;
3406 /* Fill in the function descriptor. */
3407 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3408 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3409 fptr_sec->contents + dyn_i->fptr_offset + 8);
3410 if (ia64_info->rel_fptr_sec)
3412 Elf_Internal_Rela outrel;
3413 bfd_byte *loc;
3415 if (bfd_little_endian (abfd))
3416 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3417 else
3418 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3419 outrel.r_addend = value;
3420 outrel.r_offset = (fptr_sec->output_section->vma
3421 + fptr_sec->output_offset
3422 + dyn_i->fptr_offset);
3423 loc = ia64_info->rel_fptr_sec->contents;
3424 loc += ia64_info->rel_fptr_sec->reloc_count++
3425 * sizeof (ElfNN_External_Rela);
3426 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3430 /* Return the descriptor's address. */
3431 value = (fptr_sec->output_section->vma
3432 + fptr_sec->output_offset
3433 + dyn_i->fptr_offset);
3435 return value;
3438 /* Fill in a PLTOFF entry consisting of the function's code address
3439 and its global pointer. Return the descriptor's address. */
3441 static bfd_vma
3442 set_pltoff_entry (abfd, info, dyn_i, value, is_plt)
3443 bfd *abfd;
3444 struct bfd_link_info *info;
3445 struct elfNN_ia64_dyn_sym_info *dyn_i;
3446 bfd_vma value;
3447 bfd_boolean is_plt;
3449 struct elfNN_ia64_link_hash_table *ia64_info;
3450 asection *pltoff_sec;
3452 ia64_info = elfNN_ia64_hash_table (info);
3453 pltoff_sec = ia64_info->pltoff_sec;
3455 /* Don't do anything if this symbol uses a real PLT entry. In
3456 that case, we'll fill this in during finish_dynamic_symbol. */
3457 if ((! dyn_i->want_plt || is_plt)
3458 && !dyn_i->pltoff_done)
3460 bfd_vma gp = _bfd_get_gp_value (abfd);
3462 /* Fill in the function descriptor. */
3463 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3464 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3466 /* Install dynamic relocations if needed. */
3467 if (!is_plt
3468 && info->shared
3469 && (!dyn_i->h
3470 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3471 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3473 unsigned int dyn_r_type;
3475 if (bfd_big_endian (abfd))
3476 dyn_r_type = R_IA64_REL64MSB;
3477 else
3478 dyn_r_type = R_IA64_REL64LSB;
3480 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3481 ia64_info->rel_pltoff_sec,
3482 dyn_i->pltoff_offset,
3483 dyn_r_type, 0, value);
3484 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3485 ia64_info->rel_pltoff_sec,
3486 dyn_i->pltoff_offset + 8,
3487 dyn_r_type, 0, gp);
3490 dyn_i->pltoff_done = 1;
3493 /* Return the descriptor's address. */
3494 value = (pltoff_sec->output_section->vma
3495 + pltoff_sec->output_offset
3496 + dyn_i->pltoff_offset);
3498 return value;
3501 /* Return the base VMA address which should be subtracted from real addresses
3502 when resolving @tprel() relocation.
3503 Main program TLS (whose template starts at PT_TLS p_vaddr)
3504 is assigned offset round(16, PT_TLS p_align). */
3506 static bfd_vma
3507 elfNN_ia64_tprel_base (info)
3508 struct bfd_link_info *info;
3510 struct elf_link_tls_segment *tls_segment
3511 = elf_hash_table (info)->tls_segment;
3513 BFD_ASSERT (tls_segment != NULL);
3514 return (tls_segment->start
3515 - align_power ((bfd_vma) 16, tls_segment->align));
3518 /* Return the base VMA address which should be subtracted from real addresses
3519 when resolving @dtprel() relocation.
3520 This is PT_TLS segment p_vaddr. */
3522 static bfd_vma
3523 elfNN_ia64_dtprel_base (info)
3524 struct bfd_link_info *info;
3526 BFD_ASSERT (elf_hash_table (info)->tls_segment != NULL);
3527 return elf_hash_table (info)->tls_segment->start;
3530 /* Called through qsort to sort the .IA_64.unwind section during a
3531 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3532 to the output bfd so we can do proper endianness frobbing. */
3534 static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3536 static int
3537 elfNN_ia64_unwind_entry_compare (a, b)
3538 const PTR a;
3539 const PTR b;
3541 bfd_vma av, bv;
3543 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3544 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3546 return (av < bv ? -1 : av > bv ? 1 : 0);
3549 /* Make sure we've got ourselves a nice fat __gp value. */
3550 static bfd_boolean
3551 elfNN_ia64_choose_gp (abfd, info)
3552 bfd *abfd;
3553 struct bfd_link_info *info;
3555 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3556 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3557 struct elf_link_hash_entry *gp;
3558 bfd_vma gp_val;
3559 asection *os;
3560 struct elfNN_ia64_link_hash_table *ia64_info;
3562 ia64_info = elfNN_ia64_hash_table (info);
3564 /* Find the min and max vma of all sections marked short. Also collect
3565 min and max vma of any type, for use in selecting a nice gp. */
3566 for (os = abfd->sections; os ; os = os->next)
3568 bfd_vma lo, hi;
3570 if ((os->flags & SEC_ALLOC) == 0)
3571 continue;
3573 lo = os->vma;
3574 hi = os->vma + os->_raw_size;
3575 if (hi < lo)
3576 hi = (bfd_vma) -1;
3578 if (min_vma > lo)
3579 min_vma = lo;
3580 if (max_vma < hi)
3581 max_vma = hi;
3582 if (os->flags & SEC_SMALL_DATA)
3584 if (min_short_vma > lo)
3585 min_short_vma = lo;
3586 if (max_short_vma < hi)
3587 max_short_vma = hi;
3591 /* See if the user wants to force a value. */
3592 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3593 FALSE, FALSE);
3595 if (gp
3596 && (gp->root.type == bfd_link_hash_defined
3597 || gp->root.type == bfd_link_hash_defweak))
3599 asection *gp_sec = gp->root.u.def.section;
3600 gp_val = (gp->root.u.def.value
3601 + gp_sec->output_section->vma
3602 + gp_sec->output_offset);
3604 else
3606 /* Pick a sensible value. */
3608 asection *got_sec = ia64_info->got_sec;
3610 /* Start with just the address of the .got. */
3611 if (got_sec)
3612 gp_val = got_sec->output_section->vma;
3613 else if (max_short_vma != 0)
3614 gp_val = min_short_vma;
3615 else
3616 gp_val = min_vma;
3618 /* If it is possible to address the entire image, but we
3619 don't with the choice above, adjust. */
3620 if (max_vma - min_vma < 0x400000
3621 && max_vma - gp_val <= 0x200000
3622 && gp_val - min_vma > 0x200000)
3623 gp_val = min_vma + 0x200000;
3624 else if (max_short_vma != 0)
3626 /* If we don't cover all the short data, adjust. */
3627 if (max_short_vma - gp_val >= 0x200000)
3628 gp_val = min_short_vma + 0x200000;
3630 /* If we're addressing stuff past the end, adjust back. */
3631 if (gp_val > max_vma)
3632 gp_val = max_vma - 0x200000 + 8;
3636 /* Validate whether all SHF_IA_64_SHORT sections are within
3637 range of the chosen GP. */
3639 if (max_short_vma != 0)
3641 if (max_short_vma - min_short_vma >= 0x400000)
3643 (*_bfd_error_handler)
3644 (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3645 bfd_get_filename (abfd),
3646 (unsigned long) (max_short_vma - min_short_vma));
3647 return FALSE;
3649 else if ((gp_val > min_short_vma
3650 && gp_val - min_short_vma > 0x200000)
3651 || (gp_val < max_short_vma
3652 && max_short_vma - gp_val >= 0x200000))
3654 (*_bfd_error_handler)
3655 (_("%s: __gp does not cover short data segment"),
3656 bfd_get_filename (abfd));
3657 return FALSE;
3661 _bfd_set_gp_value (abfd, gp_val);
3663 return TRUE;
3666 static bfd_boolean
3667 elfNN_ia64_final_link (abfd, info)
3668 bfd *abfd;
3669 struct bfd_link_info *info;
3671 struct elfNN_ia64_link_hash_table *ia64_info;
3672 asection *unwind_output_sec;
3674 ia64_info = elfNN_ia64_hash_table (info);
3676 /* Make sure we've got ourselves a nice fat __gp value. */
3677 if (!info->relocatable)
3679 bfd_vma gp_val = _bfd_get_gp_value (abfd);
3680 struct elf_link_hash_entry *gp;
3682 if (gp_val == 0)
3684 if (! elfNN_ia64_choose_gp (abfd, info))
3685 return FALSE;
3686 gp_val = _bfd_get_gp_value (abfd);
3689 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3690 FALSE, FALSE);
3691 if (gp)
3693 gp->root.type = bfd_link_hash_defined;
3694 gp->root.u.def.value = gp_val;
3695 gp->root.u.def.section = bfd_abs_section_ptr;
3699 /* If we're producing a final executable, we need to sort the contents
3700 of the .IA_64.unwind section. Force this section to be relocated
3701 into memory rather than written immediately to the output file. */
3702 unwind_output_sec = NULL;
3703 if (!info->relocatable)
3705 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3706 if (s)
3708 unwind_output_sec = s->output_section;
3709 unwind_output_sec->contents
3710 = bfd_malloc (unwind_output_sec->_raw_size);
3711 if (unwind_output_sec->contents == NULL)
3712 return FALSE;
3716 /* Invoke the regular ELF backend linker to do all the work. */
3717 if (!bfd_elfNN_bfd_final_link (abfd, info))
3718 return FALSE;
3720 if (unwind_output_sec)
3722 elfNN_ia64_unwind_entry_compare_bfd = abfd;
3723 qsort (unwind_output_sec->contents,
3724 (size_t) (unwind_output_sec->_raw_size / 24),
3726 elfNN_ia64_unwind_entry_compare);
3728 if (! bfd_set_section_contents (abfd, unwind_output_sec,
3729 unwind_output_sec->contents, (bfd_vma) 0,
3730 unwind_output_sec->_raw_size))
3731 return FALSE;
3734 return TRUE;
3737 static bfd_boolean
3738 elfNN_ia64_relocate_section (output_bfd, info, input_bfd, input_section,
3739 contents, relocs, local_syms, local_sections)
3740 bfd *output_bfd;
3741 struct bfd_link_info *info;
3742 bfd *input_bfd;
3743 asection *input_section;
3744 bfd_byte *contents;
3745 Elf_Internal_Rela *relocs;
3746 Elf_Internal_Sym *local_syms;
3747 asection **local_sections;
3749 struct elfNN_ia64_link_hash_table *ia64_info;
3750 Elf_Internal_Shdr *symtab_hdr;
3751 Elf_Internal_Rela *rel;
3752 Elf_Internal_Rela *relend;
3753 asection *srel;
3754 bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3755 bfd_vma gp_val;
3757 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3758 ia64_info = elfNN_ia64_hash_table (info);
3760 /* Infect various flags from the input section to the output section. */
3761 if (info->relocatable)
3763 bfd_vma flags;
3765 flags = elf_section_data(input_section)->this_hdr.sh_flags;
3766 flags &= SHF_IA_64_NORECOV;
3768 elf_section_data(input_section->output_section)
3769 ->this_hdr.sh_flags |= flags;
3770 return TRUE;
3773 gp_val = _bfd_get_gp_value (output_bfd);
3774 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3776 rel = relocs;
3777 relend = relocs + input_section->reloc_count;
3778 for (; rel < relend; ++rel)
3780 struct elf_link_hash_entry *h;
3781 struct elfNN_ia64_dyn_sym_info *dyn_i;
3782 bfd_reloc_status_type r;
3783 reloc_howto_type *howto;
3784 unsigned long r_symndx;
3785 Elf_Internal_Sym *sym;
3786 unsigned int r_type;
3787 bfd_vma value;
3788 asection *sym_sec;
3789 bfd_byte *hit_addr;
3790 bfd_boolean dynamic_symbol_p;
3791 bfd_boolean undef_weak_ref;
3793 r_type = ELFNN_R_TYPE (rel->r_info);
3794 if (r_type > R_IA64_MAX_RELOC_CODE)
3796 (*_bfd_error_handler)
3797 (_("%s: unknown relocation type %d"),
3798 bfd_archive_filename (input_bfd), (int)r_type);
3799 bfd_set_error (bfd_error_bad_value);
3800 ret_val = FALSE;
3801 continue;
3804 howto = lookup_howto (r_type);
3805 r_symndx = ELFNN_R_SYM (rel->r_info);
3806 h = NULL;
3807 sym = NULL;
3808 sym_sec = NULL;
3809 undef_weak_ref = FALSE;
3811 if (r_symndx < symtab_hdr->sh_info)
3813 /* Reloc against local symbol. */
3814 sym = local_syms + r_symndx;
3815 sym_sec = local_sections[r_symndx];
3816 value = _bfd_elf_rela_local_sym (output_bfd, sym, sym_sec, rel);
3817 if ((sym_sec->flags & SEC_MERGE)
3818 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3819 && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE)
3821 struct elfNN_ia64_local_hash_entry *loc_h;
3823 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3824 if (loc_h && ! loc_h->sec_merge_done)
3826 struct elfNN_ia64_dyn_sym_info *dynent;
3827 asection *msec;
3829 for (dynent = loc_h->info; dynent; dynent = dynent->next)
3831 msec = sym_sec;
3832 dynent->addend =
3833 _bfd_merged_section_offset (output_bfd, &msec,
3834 elf_section_data (msec)->
3835 sec_info,
3836 sym->st_value
3837 + dynent->addend,
3838 (bfd_vma) 0);
3839 dynent->addend -= sym->st_value;
3840 dynent->addend += msec->output_section->vma
3841 + msec->output_offset
3842 - sym_sec->output_section->vma
3843 - sym_sec->output_offset;
3845 loc_h->sec_merge_done = 1;
3849 else
3851 long indx;
3853 /* Reloc against global symbol. */
3854 indx = r_symndx - symtab_hdr->sh_info;
3855 h = elf_sym_hashes (input_bfd)[indx];
3856 while (h->root.type == bfd_link_hash_indirect
3857 || h->root.type == bfd_link_hash_warning)
3858 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3860 value = 0;
3861 if (h->root.type == bfd_link_hash_defined
3862 || h->root.type == bfd_link_hash_defweak)
3864 sym_sec = h->root.u.def.section;
3866 /* Detect the cases that sym_sec->output_section is
3867 expected to be NULL -- all cases in which the symbol
3868 is defined in another shared module. This includes
3869 PLT relocs for which we've created a PLT entry and
3870 other relocs for which we're prepared to create
3871 dynamic relocations. */
3872 /* ??? Just accept it NULL and continue. */
3874 if (sym_sec->output_section != NULL)
3876 value = (h->root.u.def.value
3877 + sym_sec->output_section->vma
3878 + sym_sec->output_offset);
3881 else if (h->root.type == bfd_link_hash_undefweak)
3882 undef_weak_ref = TRUE;
3883 else if (! info->executable
3884 && !info->no_undefined
3885 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3887 else
3889 if (! ((*info->callbacks->undefined_symbol)
3890 (info, h->root.root.string, input_bfd,
3891 input_section, rel->r_offset,
3892 (!info->shared || info->no_undefined
3893 || ELF_ST_VISIBILITY (h->other)))))
3894 return FALSE;
3895 continue;
3899 hit_addr = contents + rel->r_offset;
3900 value += rel->r_addend;
3901 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3903 switch (r_type)
3905 case R_IA64_NONE:
3906 case R_IA64_LDXMOV:
3907 continue;
3909 case R_IA64_IMM14:
3910 case R_IA64_IMM22:
3911 case R_IA64_IMM64:
3912 case R_IA64_DIR32MSB:
3913 case R_IA64_DIR32LSB:
3914 case R_IA64_DIR64MSB:
3915 case R_IA64_DIR64LSB:
3916 /* Install a dynamic relocation for this reloc. */
3917 if ((dynamic_symbol_p || info->shared)
3918 && r_symndx != 0
3919 && (input_section->flags & SEC_ALLOC) != 0)
3921 unsigned int dyn_r_type;
3922 long dynindx;
3923 bfd_vma addend;
3925 BFD_ASSERT (srel != NULL);
3927 /* If we don't need dynamic symbol lookup, find a
3928 matching RELATIVE relocation. */
3929 dyn_r_type = r_type;
3930 if (dynamic_symbol_p)
3932 dynindx = h->dynindx;
3933 addend = rel->r_addend;
3934 value = 0;
3936 else
3938 switch (r_type)
3940 case R_IA64_DIR32MSB:
3941 dyn_r_type = R_IA64_REL32MSB;
3942 break;
3943 case R_IA64_DIR32LSB:
3944 dyn_r_type = R_IA64_REL32LSB;
3945 break;
3946 case R_IA64_DIR64MSB:
3947 dyn_r_type = R_IA64_REL64MSB;
3948 break;
3949 case R_IA64_DIR64LSB:
3950 dyn_r_type = R_IA64_REL64LSB;
3951 break;
3953 default:
3954 /* We can't represent this without a dynamic symbol.
3955 Adjust the relocation to be against an output
3956 section symbol, which are always present in the
3957 dynamic symbol table. */
3958 /* ??? People shouldn't be doing non-pic code in
3959 shared libraries. Hork. */
3960 (*_bfd_error_handler)
3961 (_("%s: linking non-pic code in a shared library"),
3962 bfd_archive_filename (input_bfd));
3963 ret_val = FALSE;
3964 continue;
3966 dynindx = 0;
3967 addend = value;
3970 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
3971 srel, rel->r_offset, dyn_r_type,
3972 dynindx, addend);
3974 /* Fall through. */
3976 case R_IA64_LTV32MSB:
3977 case R_IA64_LTV32LSB:
3978 case R_IA64_LTV64MSB:
3979 case R_IA64_LTV64LSB:
3980 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
3981 break;
3983 case R_IA64_GPREL22:
3984 case R_IA64_GPREL64I:
3985 case R_IA64_GPREL32MSB:
3986 case R_IA64_GPREL32LSB:
3987 case R_IA64_GPREL64MSB:
3988 case R_IA64_GPREL64LSB:
3989 if (dynamic_symbol_p)
3991 (*_bfd_error_handler)
3992 (_("%s: @gprel relocation against dynamic symbol %s"),
3993 bfd_archive_filename (input_bfd), h->root.root.string);
3994 ret_val = FALSE;
3995 continue;
3997 value -= gp_val;
3998 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
3999 break;
4001 case R_IA64_LTOFF22:
4002 case R_IA64_LTOFF22X:
4003 case R_IA64_LTOFF64I:
4004 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4005 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4006 rel->r_addend, value, R_IA64_DIR64LSB);
4007 value -= gp_val;
4008 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4009 break;
4011 case R_IA64_PLTOFF22:
4012 case R_IA64_PLTOFF64I:
4013 case R_IA64_PLTOFF64MSB:
4014 case R_IA64_PLTOFF64LSB:
4015 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4016 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4017 value -= gp_val;
4018 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4019 break;
4021 case R_IA64_FPTR64I:
4022 case R_IA64_FPTR32MSB:
4023 case R_IA64_FPTR32LSB:
4024 case R_IA64_FPTR64MSB:
4025 case R_IA64_FPTR64LSB:
4026 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4027 if (dyn_i->want_fptr)
4029 if (!undef_weak_ref)
4030 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4032 if (!dyn_i->want_fptr || info->pie)
4034 long dynindx;
4035 unsigned int dyn_r_type = r_type;
4036 bfd_vma addend = rel->r_addend;
4038 /* Otherwise, we expect the dynamic linker to create
4039 the entry. */
4041 if (dyn_i->want_fptr)
4043 if (r_type == R_IA64_FPTR64I)
4045 /* We can't represent this without a dynamic symbol.
4046 Adjust the relocation to be against an output
4047 section symbol, which are always present in the
4048 dynamic symbol table. */
4049 /* ??? People shouldn't be doing non-pic code in
4050 shared libraries. Hork. */
4051 (*_bfd_error_handler)
4052 (_("%s: linking non-pic code in a position independent executable"),
4053 bfd_archive_filename (input_bfd));
4054 ret_val = FALSE;
4055 continue;
4057 dynindx = 0;
4058 addend = value;
4059 dyn_r_type = r_type + R_IA64_REL64LSB - R_IA64_FPTR64LSB;
4061 else if (h)
4063 if (h->dynindx != -1)
4064 dynindx = h->dynindx;
4065 else
4066 dynindx = (_bfd_elf_link_lookup_local_dynindx
4067 (info, h->root.u.def.section->owner,
4068 global_sym_index (h)));
4069 value = 0;
4071 else
4073 dynindx = (_bfd_elf_link_lookup_local_dynindx
4074 (info, input_bfd, (long) r_symndx));
4075 value = 0;
4078 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4079 srel, rel->r_offset, dyn_r_type,
4080 dynindx, addend);
4083 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4084 break;
4086 case R_IA64_LTOFF_FPTR22:
4087 case R_IA64_LTOFF_FPTR64I:
4088 case R_IA64_LTOFF_FPTR32MSB:
4089 case R_IA64_LTOFF_FPTR32LSB:
4090 case R_IA64_LTOFF_FPTR64MSB:
4091 case R_IA64_LTOFF_FPTR64LSB:
4093 long dynindx;
4095 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4096 if (dyn_i->want_fptr)
4098 BFD_ASSERT (h == NULL || h->dynindx == -1)
4099 if (!undef_weak_ref)
4100 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4101 dynindx = -1;
4103 else
4105 /* Otherwise, we expect the dynamic linker to create
4106 the entry. */
4107 if (h)
4109 if (h->dynindx != -1)
4110 dynindx = h->dynindx;
4111 else
4112 dynindx = (_bfd_elf_link_lookup_local_dynindx
4113 (info, h->root.u.def.section->owner,
4114 global_sym_index (h)));
4116 else
4117 dynindx = (_bfd_elf_link_lookup_local_dynindx
4118 (info, input_bfd, (long) r_symndx));
4119 value = 0;
4122 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4123 rel->r_addend, value, R_IA64_FPTR64LSB);
4124 value -= gp_val;
4125 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4127 break;
4129 case R_IA64_PCREL32MSB:
4130 case R_IA64_PCREL32LSB:
4131 case R_IA64_PCREL64MSB:
4132 case R_IA64_PCREL64LSB:
4133 /* Install a dynamic relocation for this reloc. */
4134 if (dynamic_symbol_p && r_symndx != 0)
4136 BFD_ASSERT (srel != NULL);
4138 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4139 srel, rel->r_offset, r_type,
4140 h->dynindx, rel->r_addend);
4142 goto finish_pcrel;
4144 case R_IA64_PCREL21B:
4145 case R_IA64_PCREL60B:
4146 /* We should have created a PLT entry for any dynamic symbol. */
4147 dyn_i = NULL;
4148 if (h)
4149 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4151 if (dyn_i && dyn_i->want_plt2)
4153 /* Should have caught this earlier. */
4154 BFD_ASSERT (rel->r_addend == 0);
4156 value = (ia64_info->plt_sec->output_section->vma
4157 + ia64_info->plt_sec->output_offset
4158 + dyn_i->plt2_offset);
4160 else
4162 /* Since there's no PLT entry, Validate that this is
4163 locally defined. */
4164 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4166 /* If the symbol is undef_weak, we shouldn't be trying
4167 to call it. There's every chance that we'd wind up
4168 with an out-of-range fixup here. Don't bother setting
4169 any value at all. */
4170 if (undef_weak_ref)
4171 continue;
4173 goto finish_pcrel;
4175 case R_IA64_PCREL21BI:
4176 case R_IA64_PCREL21F:
4177 case R_IA64_PCREL21M:
4178 case R_IA64_PCREL22:
4179 case R_IA64_PCREL64I:
4180 /* The PCREL21BI reloc is specifically not intended for use with
4181 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4182 fixup code, and thus probably ought not be dynamic. The
4183 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4184 if (dynamic_symbol_p)
4186 const char *msg;
4188 if (r_type == R_IA64_PCREL21BI)
4189 msg = _("%s: @internal branch to dynamic symbol %s");
4190 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4191 msg = _("%s: speculation fixup to dynamic symbol %s");
4192 else
4193 msg = _("%s: @pcrel relocation against dynamic symbol %s");
4194 (*_bfd_error_handler) (msg, bfd_archive_filename (input_bfd),
4195 h->root.root.string);
4196 ret_val = FALSE;
4197 continue;
4199 goto finish_pcrel;
4201 finish_pcrel:
4202 /* Make pc-relative. */
4203 value -= (input_section->output_section->vma
4204 + input_section->output_offset
4205 + rel->r_offset) & ~ (bfd_vma) 0x3;
4206 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4207 break;
4209 case R_IA64_SEGREL32MSB:
4210 case R_IA64_SEGREL32LSB:
4211 case R_IA64_SEGREL64MSB:
4212 case R_IA64_SEGREL64LSB:
4213 if (r_symndx == 0)
4215 /* If the input section was discarded from the output, then
4216 do nothing. */
4217 r = bfd_reloc_ok;
4219 else
4221 struct elf_segment_map *m;
4222 Elf_Internal_Phdr *p;
4224 /* Find the segment that contains the output_section. */
4225 for (m = elf_tdata (output_bfd)->segment_map,
4226 p = elf_tdata (output_bfd)->phdr;
4227 m != NULL;
4228 m = m->next, p++)
4230 int i;
4231 for (i = m->count - 1; i >= 0; i--)
4232 if (m->sections[i] == input_section->output_section)
4233 break;
4234 if (i >= 0)
4235 break;
4238 if (m == NULL)
4240 r = bfd_reloc_notsupported;
4242 else
4244 /* The VMA of the segment is the vaddr of the associated
4245 program header. */
4246 if (value > p->p_vaddr)
4247 value -= p->p_vaddr;
4248 else
4249 value = 0;
4250 r = elfNN_ia64_install_value (output_bfd, hit_addr, value,
4251 r_type);
4253 break;
4256 case R_IA64_SECREL32MSB:
4257 case R_IA64_SECREL32LSB:
4258 case R_IA64_SECREL64MSB:
4259 case R_IA64_SECREL64LSB:
4260 /* Make output-section relative. */
4261 if (value > input_section->output_section->vma)
4262 value -= input_section->output_section->vma;
4263 else
4264 value = 0;
4265 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4266 break;
4268 case R_IA64_IPLTMSB:
4269 case R_IA64_IPLTLSB:
4270 /* Install a dynamic relocation for this reloc. */
4271 if ((dynamic_symbol_p || info->shared)
4272 && (input_section->flags & SEC_ALLOC) != 0)
4274 BFD_ASSERT (srel != NULL);
4276 /* If we don't need dynamic symbol lookup, install two
4277 RELATIVE relocations. */
4278 if (!dynamic_symbol_p)
4280 unsigned int dyn_r_type;
4282 if (r_type == R_IA64_IPLTMSB)
4283 dyn_r_type = R_IA64_REL64MSB;
4284 else
4285 dyn_r_type = R_IA64_REL64LSB;
4287 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4288 input_section,
4289 srel, rel->r_offset,
4290 dyn_r_type, 0, value);
4291 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4292 input_section,
4293 srel, rel->r_offset + 8,
4294 dyn_r_type, 0, gp_val);
4296 else
4297 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4298 srel, rel->r_offset, r_type,
4299 h->dynindx, rel->r_addend);
4302 if (r_type == R_IA64_IPLTMSB)
4303 r_type = R_IA64_DIR64MSB;
4304 else
4305 r_type = R_IA64_DIR64LSB;
4306 elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4307 r = elfNN_ia64_install_value (output_bfd, hit_addr + 8, gp_val,
4308 r_type);
4309 break;
4311 case R_IA64_TPREL14:
4312 case R_IA64_TPREL22:
4313 case R_IA64_TPREL64I:
4314 value -= elfNN_ia64_tprel_base (info);
4315 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4316 break;
4318 case R_IA64_DTPREL14:
4319 case R_IA64_DTPREL22:
4320 case R_IA64_DTPREL64I:
4321 case R_IA64_DTPREL64LSB:
4322 case R_IA64_DTPREL64MSB:
4323 value -= elfNN_ia64_dtprel_base (info);
4324 r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
4325 break;
4327 case R_IA64_LTOFF_TPREL22:
4328 case R_IA64_LTOFF_DTPMOD22:
4329 case R_IA64_LTOFF_DTPREL22:
4331 int got_r_type;
4332 long dynindx = h ? h->dynindx : -1;
4333 bfd_vma r_addend = rel->r_addend;
4335 switch (r_type)
4337 default:
4338 case R_IA64_LTOFF_TPREL22:
4339 if (!dynamic_symbol_p)
4341 if (!info->shared)
4342 value -= elfNN_ia64_tprel_base (info);
4343 else
4345 r_addend += value - elfNN_ia64_dtprel_base (info);
4346 dynindx = 0;
4349 got_r_type = R_IA64_TPREL64LSB;
4350 break;
4351 case R_IA64_LTOFF_DTPMOD22:
4352 if (!dynamic_symbol_p && !info->shared)
4353 value = 1;
4354 got_r_type = R_IA64_DTPMOD64LSB;
4355 break;
4356 case R_IA64_LTOFF_DTPREL22:
4357 if (!dynamic_symbol_p)
4358 value -= elfNN_ia64_dtprel_base (info);
4359 got_r_type = R_IA64_DTPREL64LSB;
4360 break;
4362 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4363 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4364 value, got_r_type);
4365 value -= gp_val;
4366 r = elfNN_ia64_install_value (output_bfd, hit_addr, value,
4367 r_type);
4369 break;
4371 default:
4372 r = bfd_reloc_notsupported;
4373 break;
4376 switch (r)
4378 case bfd_reloc_ok:
4379 break;
4381 case bfd_reloc_undefined:
4382 /* This can happen for global table relative relocs if
4383 __gp is undefined. This is a panic situation so we
4384 don't try to continue. */
4385 (*info->callbacks->undefined_symbol)
4386 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4387 return FALSE;
4389 case bfd_reloc_notsupported:
4391 const char *name;
4393 if (h)
4394 name = h->root.root.string;
4395 else
4397 name = bfd_elf_string_from_elf_section (input_bfd,
4398 symtab_hdr->sh_link,
4399 sym->st_name);
4400 if (name == NULL)
4401 return FALSE;
4402 if (*name == '\0')
4403 name = bfd_section_name (input_bfd, input_section);
4405 if (!(*info->callbacks->warning) (info, _("unsupported reloc"),
4406 name, input_bfd,
4407 input_section, rel->r_offset))
4408 return FALSE;
4409 ret_val = FALSE;
4411 break;
4413 case bfd_reloc_dangerous:
4414 case bfd_reloc_outofrange:
4415 case bfd_reloc_overflow:
4416 default:
4418 const char *name;
4420 if (h)
4421 name = h->root.root.string;
4422 else
4424 name = bfd_elf_string_from_elf_section (input_bfd,
4425 symtab_hdr->sh_link,
4426 sym->st_name);
4427 if (name == NULL)
4428 return FALSE;
4429 if (*name == '\0')
4430 name = bfd_section_name (input_bfd, input_section);
4432 if (!(*info->callbacks->reloc_overflow) (info, name,
4433 howto->name,
4434 (bfd_vma) 0,
4435 input_bfd,
4436 input_section,
4437 rel->r_offset))
4438 return FALSE;
4439 ret_val = FALSE;
4441 break;
4445 return ret_val;
4448 static bfd_boolean
4449 elfNN_ia64_finish_dynamic_symbol (output_bfd, info, h, sym)
4450 bfd *output_bfd;
4451 struct bfd_link_info *info;
4452 struct elf_link_hash_entry *h;
4453 Elf_Internal_Sym *sym;
4455 struct elfNN_ia64_link_hash_table *ia64_info;
4456 struct elfNN_ia64_dyn_sym_info *dyn_i;
4458 ia64_info = elfNN_ia64_hash_table (info);
4459 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4461 /* Fill in the PLT data, if required. */
4462 if (dyn_i && dyn_i->want_plt)
4464 Elf_Internal_Rela outrel;
4465 bfd_byte *loc;
4466 asection *plt_sec;
4467 bfd_vma plt_addr, pltoff_addr, gp_val, index;
4469 gp_val = _bfd_get_gp_value (output_bfd);
4471 /* Initialize the minimal PLT entry. */
4473 index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4474 plt_sec = ia64_info->plt_sec;
4475 loc = plt_sec->contents + dyn_i->plt_offset;
4477 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4478 elfNN_ia64_install_value (output_bfd, loc, index, R_IA64_IMM22);
4479 elfNN_ia64_install_value (output_bfd, loc+2, -dyn_i->plt_offset,
4480 R_IA64_PCREL21B);
4482 plt_addr = (plt_sec->output_section->vma
4483 + plt_sec->output_offset
4484 + dyn_i->plt_offset);
4485 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4487 /* Initialize the FULL PLT entry, if needed. */
4488 if (dyn_i->want_plt2)
4490 loc = plt_sec->contents + dyn_i->plt2_offset;
4492 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4493 elfNN_ia64_install_value (output_bfd, loc, pltoff_addr - gp_val,
4494 R_IA64_IMM22);
4496 /* Mark the symbol as undefined, rather than as defined in the
4497 plt section. Leave the value alone. */
4498 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4499 first place. But perhaps elflink.h did some for us. */
4500 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4501 sym->st_shndx = SHN_UNDEF;
4504 /* Create the dynamic relocation. */
4505 outrel.r_offset = pltoff_addr;
4506 if (bfd_little_endian (output_bfd))
4507 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4508 else
4509 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4510 outrel.r_addend = 0;
4512 /* This is fun. In the .IA_64.pltoff section, we've got entries
4513 that correspond both to real PLT entries, and those that
4514 happened to resolve to local symbols but need to be created
4515 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4516 relocations for the real PLT should come at the end of the
4517 section, so that they can be indexed by plt entry at runtime.
4519 We emitted all of the relocations for the non-PLT @pltoff
4520 entries during relocate_section. So we can consider the
4521 existing sec->reloc_count to be the base of the array of
4522 PLT relocations. */
4524 loc = ia64_info->rel_pltoff_sec->contents;
4525 loc += ((ia64_info->rel_pltoff_sec->reloc_count + index)
4526 * sizeof (Elf64_External_Rela));
4527 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4530 /* Mark some specially defined symbols as absolute. */
4531 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4532 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
4533 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
4534 sym->st_shndx = SHN_ABS;
4536 return TRUE;
4539 static bfd_boolean
4540 elfNN_ia64_finish_dynamic_sections (abfd, info)
4541 bfd *abfd;
4542 struct bfd_link_info *info;
4544 struct elfNN_ia64_link_hash_table *ia64_info;
4545 bfd *dynobj;
4547 ia64_info = elfNN_ia64_hash_table (info);
4548 dynobj = ia64_info->root.dynobj;
4550 if (elf_hash_table (info)->dynamic_sections_created)
4552 ElfNN_External_Dyn *dyncon, *dynconend;
4553 asection *sdyn, *sgotplt;
4554 bfd_vma gp_val;
4556 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4557 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
4558 BFD_ASSERT (sdyn != NULL);
4559 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4560 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4562 gp_val = _bfd_get_gp_value (abfd);
4564 for (; dyncon < dynconend; dyncon++)
4566 Elf_Internal_Dyn dyn;
4568 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4570 switch (dyn.d_tag)
4572 case DT_PLTGOT:
4573 dyn.d_un.d_ptr = gp_val;
4574 break;
4576 case DT_PLTRELSZ:
4577 dyn.d_un.d_val = (ia64_info->minplt_entries
4578 * sizeof (ElfNN_External_Rela));
4579 break;
4581 case DT_JMPREL:
4582 /* See the comment above in finish_dynamic_symbol. */
4583 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4584 + ia64_info->rel_pltoff_sec->output_offset
4585 + (ia64_info->rel_pltoff_sec->reloc_count
4586 * sizeof (ElfNN_External_Rela)));
4587 break;
4589 case DT_IA_64_PLT_RESERVE:
4590 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4591 + sgotplt->output_offset);
4592 break;
4594 case DT_RELASZ:
4595 /* Do not have RELASZ include JMPREL. This makes things
4596 easier on ld.so. This is not what the rest of BFD set up. */
4597 dyn.d_un.d_val -= (ia64_info->minplt_entries
4598 * sizeof (ElfNN_External_Rela));
4599 break;
4602 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4605 /* Initialize the PLT0 entry. */
4606 if (ia64_info->plt_sec)
4608 bfd_byte *loc = ia64_info->plt_sec->contents;
4609 bfd_vma pltres;
4611 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4613 pltres = (sgotplt->output_section->vma
4614 + sgotplt->output_offset
4615 - gp_val);
4617 elfNN_ia64_install_value (abfd, loc+1, pltres, R_IA64_GPREL22);
4621 return TRUE;
4624 /* ELF file flag handling: */
4626 /* Function to keep IA-64 specific file flags. */
4627 static bfd_boolean
4628 elfNN_ia64_set_private_flags (abfd, flags)
4629 bfd *abfd;
4630 flagword flags;
4632 BFD_ASSERT (!elf_flags_init (abfd)
4633 || elf_elfheader (abfd)->e_flags == flags);
4635 elf_elfheader (abfd)->e_flags = flags;
4636 elf_flags_init (abfd) = TRUE;
4637 return TRUE;
4640 /* Merge backend specific data from an object file to the output
4641 object file when linking. */
4642 static bfd_boolean
4643 elfNN_ia64_merge_private_bfd_data (ibfd, obfd)
4644 bfd *ibfd, *obfd;
4646 flagword out_flags;
4647 flagword in_flags;
4648 bfd_boolean ok = TRUE;
4650 /* Don't even pretend to support mixed-format linking. */
4651 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4652 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4653 return FALSE;
4655 in_flags = elf_elfheader (ibfd)->e_flags;
4656 out_flags = elf_elfheader (obfd)->e_flags;
4658 if (! elf_flags_init (obfd))
4660 elf_flags_init (obfd) = TRUE;
4661 elf_elfheader (obfd)->e_flags = in_flags;
4663 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4664 && bfd_get_arch_info (obfd)->the_default)
4666 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4667 bfd_get_mach (ibfd));
4670 return TRUE;
4673 /* Check flag compatibility. */
4674 if (in_flags == out_flags)
4675 return TRUE;
4677 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4678 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4679 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4681 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4683 (*_bfd_error_handler)
4684 (_("%s: linking trap-on-NULL-dereference with non-trapping files"),
4685 bfd_archive_filename (ibfd));
4687 bfd_set_error (bfd_error_bad_value);
4688 ok = FALSE;
4690 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4692 (*_bfd_error_handler)
4693 (_("%s: linking big-endian files with little-endian files"),
4694 bfd_archive_filename (ibfd));
4696 bfd_set_error (bfd_error_bad_value);
4697 ok = FALSE;
4699 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4701 (*_bfd_error_handler)
4702 (_("%s: linking 64-bit files with 32-bit files"),
4703 bfd_archive_filename (ibfd));
4705 bfd_set_error (bfd_error_bad_value);
4706 ok = FALSE;
4708 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4710 (*_bfd_error_handler)
4711 (_("%s: linking constant-gp files with non-constant-gp files"),
4712 bfd_archive_filename (ibfd));
4714 bfd_set_error (bfd_error_bad_value);
4715 ok = FALSE;
4717 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4718 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4720 (*_bfd_error_handler)
4721 (_("%s: linking auto-pic files with non-auto-pic files"),
4722 bfd_archive_filename (ibfd));
4724 bfd_set_error (bfd_error_bad_value);
4725 ok = FALSE;
4728 return ok;
4731 static bfd_boolean
4732 elfNN_ia64_print_private_bfd_data (abfd, ptr)
4733 bfd *abfd;
4734 PTR ptr;
4736 FILE *file = (FILE *) ptr;
4737 flagword flags = elf_elfheader (abfd)->e_flags;
4739 BFD_ASSERT (abfd != NULL && ptr != NULL);
4741 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4742 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4743 (flags & EF_IA_64_EXT) ? "EXT, " : "",
4744 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4745 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4746 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4747 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4748 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4749 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4751 _bfd_elf_print_private_bfd_data (abfd, ptr);
4752 return TRUE;
4755 static enum elf_reloc_type_class
4756 elfNN_ia64_reloc_type_class (rela)
4757 const Elf_Internal_Rela *rela;
4759 switch ((int) ELFNN_R_TYPE (rela->r_info))
4761 case R_IA64_REL32MSB:
4762 case R_IA64_REL32LSB:
4763 case R_IA64_REL64MSB:
4764 case R_IA64_REL64LSB:
4765 return reloc_class_relative;
4766 case R_IA64_IPLTMSB:
4767 case R_IA64_IPLTLSB:
4768 return reloc_class_plt;
4769 case R_IA64_COPY:
4770 return reloc_class_copy;
4771 default:
4772 return reloc_class_normal;
4776 static bfd_boolean
4777 elfNN_ia64_hpux_vec (const bfd_target *vec)
4779 extern const bfd_target bfd_elfNN_ia64_hpux_big_vec;
4780 return (vec == & bfd_elfNN_ia64_hpux_big_vec);
4783 static void
4784 elfNN_hpux_post_process_headers (abfd, info)
4785 bfd *abfd;
4786 struct bfd_link_info *info ATTRIBUTE_UNUSED;
4788 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4790 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
4791 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4794 bfd_boolean
4795 elfNN_hpux_backend_section_from_bfd_section (abfd, sec, retval)
4796 bfd *abfd ATTRIBUTE_UNUSED;
4797 asection *sec;
4798 int *retval;
4800 if (bfd_is_com_section (sec))
4802 *retval = SHN_IA_64_ANSI_COMMON;
4803 return TRUE;
4805 return FALSE;
4808 #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec
4809 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4810 #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec
4811 #define TARGET_BIG_NAME "elfNN-ia64-big"
4812 #define ELF_ARCH bfd_arch_ia64
4813 #define ELF_MACHINE_CODE EM_IA_64
4814 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4815 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4816 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4818 #define elf_backend_section_from_shdr \
4819 elfNN_ia64_section_from_shdr
4820 #define elf_backend_section_flags \
4821 elfNN_ia64_section_flags
4822 #define elf_backend_fake_sections \
4823 elfNN_ia64_fake_sections
4824 #define elf_backend_final_write_processing \
4825 elfNN_ia64_final_write_processing
4826 #define elf_backend_add_symbol_hook \
4827 elfNN_ia64_add_symbol_hook
4828 #define elf_backend_additional_program_headers \
4829 elfNN_ia64_additional_program_headers
4830 #define elf_backend_modify_segment_map \
4831 elfNN_ia64_modify_segment_map
4832 #define elf_info_to_howto \
4833 elfNN_ia64_info_to_howto
4835 #define bfd_elfNN_bfd_reloc_type_lookup \
4836 elfNN_ia64_reloc_type_lookup
4837 #define bfd_elfNN_bfd_is_local_label_name \
4838 elfNN_ia64_is_local_label_name
4839 #define bfd_elfNN_bfd_relax_section \
4840 elfNN_ia64_relax_section
4842 /* Stuff for the BFD linker: */
4843 #define bfd_elfNN_bfd_link_hash_table_create \
4844 elfNN_ia64_hash_table_create
4845 #define elf_backend_create_dynamic_sections \
4846 elfNN_ia64_create_dynamic_sections
4847 #define elf_backend_check_relocs \
4848 elfNN_ia64_check_relocs
4849 #define elf_backend_adjust_dynamic_symbol \
4850 elfNN_ia64_adjust_dynamic_symbol
4851 #define elf_backend_size_dynamic_sections \
4852 elfNN_ia64_size_dynamic_sections
4853 #define elf_backend_relocate_section \
4854 elfNN_ia64_relocate_section
4855 #define elf_backend_finish_dynamic_symbol \
4856 elfNN_ia64_finish_dynamic_symbol
4857 #define elf_backend_finish_dynamic_sections \
4858 elfNN_ia64_finish_dynamic_sections
4859 #define bfd_elfNN_bfd_final_link \
4860 elfNN_ia64_final_link
4862 #define bfd_elfNN_bfd_merge_private_bfd_data \
4863 elfNN_ia64_merge_private_bfd_data
4864 #define bfd_elfNN_bfd_set_private_flags \
4865 elfNN_ia64_set_private_flags
4866 #define bfd_elfNN_bfd_print_private_bfd_data \
4867 elfNN_ia64_print_private_bfd_data
4869 #define elf_backend_plt_readonly 1
4870 #define elf_backend_want_plt_sym 0
4871 #define elf_backend_plt_alignment 5
4872 #define elf_backend_got_header_size 0
4873 #define elf_backend_plt_header_size PLT_HEADER_SIZE
4874 #define elf_backend_want_got_plt 1
4875 #define elf_backend_may_use_rel_p 1
4876 #define elf_backend_may_use_rela_p 1
4877 #define elf_backend_default_use_rela_p 1
4878 #define elf_backend_want_dynbss 0
4879 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
4880 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
4881 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
4882 #define elf_backend_rela_normal 1
4884 #include "elfNN-target.h"
4886 /* HPUX-specific vectors. */
4888 #undef TARGET_LITTLE_SYM
4889 #undef TARGET_LITTLE_NAME
4890 #undef TARGET_BIG_SYM
4891 #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec
4892 #undef TARGET_BIG_NAME
4893 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
4895 /* These are HP-UX specific functions. */
4897 #undef elf_backend_post_process_headers
4898 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
4900 #undef elf_backend_section_from_bfd_section
4901 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
4903 #undef elf_backend_want_p_paddr_set_to_zero
4904 #define elf_backend_want_p_paddr_set_to_zero 1
4906 #undef ELF_MAXPAGESIZE
4907 #define ELF_MAXPAGESIZE 0x1000 /* 1K */
4909 #undef elfNN_bed
4910 #define elfNN_bed elfNN_ia64_hpux_bed
4912 #include "elfNN-target.h"
4914 #undef elf_backend_want_p_paddr_set_to_zero