Update the address and phone number of the FSF organization in the GPL notices
[deliverable/binutils-gdb.git] / bfd / elfxx-ia64.c
1 /* IA-64 support for 64-bit ELF
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
4 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
21
22 #include "bfd.h"
23 #include "sysdep.h"
24 #include "libbfd.h"
25 #include "elf-bfd.h"
26 #include "opcode/ia64.h"
27 #include "elf/ia64.h"
28 #include "objalloc.h"
29 #include "hashtab.h"
30
31 /* THE RULES for all the stuff the linker creates --
32
33 GOT Entries created in response to LTOFF or LTOFF_FPTR
34 relocations. Dynamic relocs created for dynamic
35 symbols in an application; REL relocs for locals
36 in a shared library.
37
38 FPTR The canonical function descriptor. Created for local
39 symbols in applications. Descriptors for dynamic symbols
40 and local symbols in shared libraries are created by
41 ld.so. Thus there are no dynamic relocs against these
42 objects. The FPTR relocs for such _are_ passed through
43 to the dynamic relocation tables.
44
45 FULL_PLT Created for a PCREL21B relocation against a dynamic symbol.
46 Requires the creation of a PLTOFF entry. This does not
47 require any dynamic relocations.
48
49 PLTOFF Created by PLTOFF relocations. For local symbols, this
50 is an alternate function descriptor, and in shared libraries
51 requires two REL relocations. Note that this cannot be
52 transformed into an FPTR relocation, since it must be in
53 range of the GP. For dynamic symbols, this is a function
54 descriptor for a MIN_PLT entry, and requires one IPLT reloc.
55
56 MIN_PLT Created by PLTOFF entries against dynamic symbols. This
57 does not require dynamic relocations. */
58
59 #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
60
61 typedef struct bfd_hash_entry *(*new_hash_entry_func)
62 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
63
64 /* In dynamically (linker-) created sections, we generally need to keep track
65 of the place a symbol or expression got allocated to. This is done via hash
66 tables that store entries of the following type. */
67
68 struct elfNN_ia64_dyn_sym_info
69 {
70 /* The addend for which this entry is relevant. */
71 bfd_vma addend;
72
73 /* Next addend in the list. */
74 struct elfNN_ia64_dyn_sym_info *next;
75
76 bfd_vma got_offset;
77 bfd_vma fptr_offset;
78 bfd_vma pltoff_offset;
79 bfd_vma plt_offset;
80 bfd_vma plt2_offset;
81 bfd_vma tprel_offset;
82 bfd_vma dtpmod_offset;
83 bfd_vma dtprel_offset;
84
85 /* The symbol table entry, if any, that this was derived from. */
86 struct elf_link_hash_entry *h;
87
88 /* Used to count non-got, non-plt relocations for delayed sizing
89 of relocation sections. */
90 struct elfNN_ia64_dyn_reloc_entry
91 {
92 struct elfNN_ia64_dyn_reloc_entry *next;
93 asection *srel;
94 int type;
95 int count;
96
97 /* Is this reloc against readonly section? */
98 bfd_boolean reltext;
99 } *reloc_entries;
100
101 /* TRUE when the section contents have been updated. */
102 unsigned got_done : 1;
103 unsigned fptr_done : 1;
104 unsigned pltoff_done : 1;
105 unsigned tprel_done : 1;
106 unsigned dtpmod_done : 1;
107 unsigned dtprel_done : 1;
108
109 /* TRUE for the different kinds of linker data we want created. */
110 unsigned want_got : 1;
111 unsigned want_gotx : 1;
112 unsigned want_fptr : 1;
113 unsigned want_ltoff_fptr : 1;
114 unsigned want_plt : 1;
115 unsigned want_plt2 : 1;
116 unsigned want_pltoff : 1;
117 unsigned want_tprel : 1;
118 unsigned want_dtpmod : 1;
119 unsigned want_dtprel : 1;
120 };
121
122 struct elfNN_ia64_local_hash_entry
123 {
124 int id;
125 unsigned int r_sym;
126 struct elfNN_ia64_dyn_sym_info *info;
127
128 /* TRUE if this hash entry's addends was translated for
129 SHF_MERGE optimization. */
130 unsigned sec_merge_done : 1;
131 };
132
133 struct elfNN_ia64_link_hash_entry
134 {
135 struct elf_link_hash_entry root;
136 struct elfNN_ia64_dyn_sym_info *info;
137 };
138
139 struct elfNN_ia64_link_hash_table
140 {
141 /* The main hash table. */
142 struct elf_link_hash_table root;
143
144 asection *got_sec; /* the linkage table section (or NULL) */
145 asection *rel_got_sec; /* dynamic relocation section for same */
146 asection *fptr_sec; /* function descriptor table (or NULL) */
147 asection *rel_fptr_sec; /* dynamic relocation section for same */
148 asection *plt_sec; /* the primary plt section (or NULL) */
149 asection *pltoff_sec; /* private descriptors for plt (or NULL) */
150 asection *rel_pltoff_sec; /* dynamic relocation section for same */
151
152 bfd_size_type minplt_entries; /* number of minplt entries */
153 unsigned reltext : 1; /* are there relocs against readonly sections? */
154 unsigned self_dtpmod_done : 1;/* has self DTPMOD entry been finished? */
155 bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry */
156
157 htab_t loc_hash_table;
158 void *loc_hash_memory;
159 };
160
161 struct elfNN_ia64_allocate_data
162 {
163 struct bfd_link_info *info;
164 bfd_size_type ofs;
165 };
166
167 #define elfNN_ia64_hash_table(p) \
168 ((struct elfNN_ia64_link_hash_table *) ((p)->hash))
169
170 static bfd_reloc_status_type elfNN_ia64_reloc
171 PARAMS ((bfd *abfd, arelent *reloc, asymbol *sym, PTR data,
172 asection *input_section, bfd *output_bfd, char **error_message));
173 static reloc_howto_type * lookup_howto
174 PARAMS ((unsigned int rtype));
175 static reloc_howto_type *elfNN_ia64_reloc_type_lookup
176 PARAMS ((bfd *abfd, bfd_reloc_code_real_type bfd_code));
177 static void elfNN_ia64_info_to_howto
178 PARAMS ((bfd *abfd, arelent *bfd_reloc, Elf_Internal_Rela *elf_reloc));
179 static bfd_boolean elfNN_ia64_relax_section
180 PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info,
181 bfd_boolean *again));
182 static void elfNN_ia64_relax_ldxmov
183 PARAMS((bfd_byte *contents, bfd_vma off));
184 static bfd_boolean is_unwind_section_name
185 PARAMS ((bfd *abfd, const char *));
186 static bfd_boolean elfNN_ia64_section_flags
187 PARAMS ((flagword *, const 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, 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 *, struct bfd_link_info *));
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 struct bfd_hash_entry *elfNN_ia64_new_elf_hash_entry
205 PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
206 const char *string));
207 static void elfNN_ia64_hash_copy_indirect
208 PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
209 struct elf_link_hash_entry *));
210 static void elfNN_ia64_hash_hide_symbol
211 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
212 static hashval_t elfNN_ia64_local_htab_hash PARAMS ((const void *));
213 static int elfNN_ia64_local_htab_eq PARAMS ((const void *ptr1,
214 const void *ptr2));
215 static struct bfd_link_hash_table *elfNN_ia64_hash_table_create
216 PARAMS ((bfd *abfd));
217 static void elfNN_ia64_hash_table_free
218 PARAMS ((struct bfd_link_hash_table *hash));
219 static bfd_boolean elfNN_ia64_global_dyn_sym_thunk
220 PARAMS ((struct bfd_hash_entry *, PTR));
221 static int elfNN_ia64_local_dyn_sym_thunk
222 PARAMS ((void **, PTR));
223 static void elfNN_ia64_dyn_sym_traverse
224 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
225 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR),
226 PTR info));
227 static bfd_boolean elfNN_ia64_create_dynamic_sections
228 PARAMS ((bfd *abfd, struct bfd_link_info *info));
229 static struct elfNN_ia64_local_hash_entry * get_local_sym_hash
230 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
231 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create));
232 static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
233 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
234 struct elf_link_hash_entry *h,
235 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create));
236 static asection *get_got
237 PARAMS ((bfd *abfd, struct bfd_link_info *info,
238 struct elfNN_ia64_link_hash_table *ia64_info));
239 static asection *get_fptr
240 PARAMS ((bfd *abfd, struct bfd_link_info *info,
241 struct elfNN_ia64_link_hash_table *ia64_info));
242 static asection *get_pltoff
243 PARAMS ((bfd *abfd, struct bfd_link_info *info,
244 struct elfNN_ia64_link_hash_table *ia64_info));
245 static asection *get_reloc_section
246 PARAMS ((bfd *abfd, struct elfNN_ia64_link_hash_table *ia64_info,
247 asection *sec, bfd_boolean create));
248 static bfd_boolean elfNN_ia64_check_relocs
249 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
250 const Elf_Internal_Rela *relocs));
251 static bfd_boolean elfNN_ia64_adjust_dynamic_symbol
252 PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
253 static long global_sym_index
254 PARAMS ((struct elf_link_hash_entry *h));
255 static bfd_boolean allocate_fptr
256 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
257 static bfd_boolean allocate_global_data_got
258 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
259 static bfd_boolean allocate_global_fptr_got
260 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
261 static bfd_boolean allocate_local_got
262 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
263 static bfd_boolean allocate_pltoff_entries
264 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
265 static bfd_boolean allocate_plt_entries
266 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
267 static bfd_boolean allocate_plt2_entries
268 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
269 static bfd_boolean allocate_dynrel_entries
270 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
271 static bfd_boolean elfNN_ia64_size_dynamic_sections
272 PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
273 static bfd_reloc_status_type elfNN_ia64_install_value
274 PARAMS ((bfd_byte *hit_addr, bfd_vma val, unsigned int r_type));
275 static void elfNN_ia64_install_dyn_reloc
276 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
277 asection *srel, bfd_vma offset, unsigned int type,
278 long dynindx, bfd_vma addend));
279 static bfd_vma set_got_entry
280 PARAMS ((bfd *abfd, struct bfd_link_info *info,
281 struct elfNN_ia64_dyn_sym_info *dyn_i, long dynindx,
282 bfd_vma addend, bfd_vma value, unsigned int dyn_r_type));
283 static bfd_vma set_fptr_entry
284 PARAMS ((bfd *abfd, struct bfd_link_info *info,
285 struct elfNN_ia64_dyn_sym_info *dyn_i,
286 bfd_vma value));
287 static bfd_vma set_pltoff_entry
288 PARAMS ((bfd *abfd, struct bfd_link_info *info,
289 struct elfNN_ia64_dyn_sym_info *dyn_i,
290 bfd_vma value, bfd_boolean));
291 static bfd_vma elfNN_ia64_tprel_base
292 PARAMS ((struct bfd_link_info *info));
293 static bfd_vma elfNN_ia64_dtprel_base
294 PARAMS ((struct bfd_link_info *info));
295 static int elfNN_ia64_unwind_entry_compare
296 PARAMS ((const PTR, const PTR));
297 static bfd_boolean elfNN_ia64_choose_gp
298 PARAMS ((bfd *abfd, struct bfd_link_info *info));
299 static bfd_boolean elfNN_ia64_final_link
300 PARAMS ((bfd *abfd, struct bfd_link_info *info));
301 static bfd_boolean elfNN_ia64_relocate_section
302 PARAMS ((bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd,
303 asection *input_section, bfd_byte *contents,
304 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
305 asection **local_sections));
306 static bfd_boolean elfNN_ia64_finish_dynamic_symbol
307 PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
308 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
309 static bfd_boolean elfNN_ia64_finish_dynamic_sections
310 PARAMS ((bfd *abfd, struct bfd_link_info *info));
311 static bfd_boolean elfNN_ia64_set_private_flags
312 PARAMS ((bfd *abfd, flagword flags));
313 static bfd_boolean elfNN_ia64_merge_private_bfd_data
314 PARAMS ((bfd *ibfd, bfd *obfd));
315 static bfd_boolean elfNN_ia64_print_private_bfd_data
316 PARAMS ((bfd *abfd, PTR ptr));
317 static enum elf_reloc_type_class elfNN_ia64_reloc_type_class
318 PARAMS ((const Elf_Internal_Rela *));
319 static bfd_boolean elfNN_ia64_hpux_vec
320 PARAMS ((const bfd_target *vec));
321 static void elfNN_hpux_post_process_headers
322 PARAMS ((bfd *abfd, struct bfd_link_info *info));
323 bfd_boolean elfNN_hpux_backend_section_from_bfd_section
324 PARAMS ((bfd *abfd, asection *sec, int *retval));
325 \f
326 /* ia64-specific relocation. */
327
328 /* Perform a relocation. Not much to do here as all the hard work is
329 done in elfNN_ia64_final_link_relocate. */
330 static bfd_reloc_status_type
331 elfNN_ia64_reloc (abfd, reloc, sym, data, input_section,
332 output_bfd, error_message)
333 bfd *abfd ATTRIBUTE_UNUSED;
334 arelent *reloc;
335 asymbol *sym ATTRIBUTE_UNUSED;
336 PTR data ATTRIBUTE_UNUSED;
337 asection *input_section;
338 bfd *output_bfd;
339 char **error_message;
340 {
341 if (output_bfd)
342 {
343 reloc->address += input_section->output_offset;
344 return bfd_reloc_ok;
345 }
346
347 if (input_section->flags & SEC_DEBUGGING)
348 return bfd_reloc_continue;
349
350 *error_message = "Unsupported call to elfNN_ia64_reloc";
351 return bfd_reloc_notsupported;
352 }
353
354 #define IA64_HOWTO(TYPE, NAME, SIZE, PCREL, IN) \
355 HOWTO (TYPE, 0, SIZE, 0, PCREL, 0, complain_overflow_signed, \
356 elfNN_ia64_reloc, NAME, FALSE, 0, -1, IN)
357
358 /* This table has to be sorted according to increasing number of the
359 TYPE field. */
360 static reloc_howto_type ia64_howto_table[] =
361 {
362 IA64_HOWTO (R_IA64_NONE, "NONE", 0, FALSE, TRUE),
363
364 IA64_HOWTO (R_IA64_IMM14, "IMM14", 0, FALSE, TRUE),
365 IA64_HOWTO (R_IA64_IMM22, "IMM22", 0, FALSE, TRUE),
366 IA64_HOWTO (R_IA64_IMM64, "IMM64", 0, FALSE, TRUE),
367 IA64_HOWTO (R_IA64_DIR32MSB, "DIR32MSB", 2, FALSE, TRUE),
368 IA64_HOWTO (R_IA64_DIR32LSB, "DIR32LSB", 2, FALSE, TRUE),
369 IA64_HOWTO (R_IA64_DIR64MSB, "DIR64MSB", 4, FALSE, TRUE),
370 IA64_HOWTO (R_IA64_DIR64LSB, "DIR64LSB", 4, FALSE, TRUE),
371
372 IA64_HOWTO (R_IA64_GPREL22, "GPREL22", 0, FALSE, TRUE),
373 IA64_HOWTO (R_IA64_GPREL64I, "GPREL64I", 0, FALSE, TRUE),
374 IA64_HOWTO (R_IA64_GPREL32MSB, "GPREL32MSB", 2, FALSE, TRUE),
375 IA64_HOWTO (R_IA64_GPREL32LSB, "GPREL32LSB", 2, FALSE, TRUE),
376 IA64_HOWTO (R_IA64_GPREL64MSB, "GPREL64MSB", 4, FALSE, TRUE),
377 IA64_HOWTO (R_IA64_GPREL64LSB, "GPREL64LSB", 4, FALSE, TRUE),
378
379 IA64_HOWTO (R_IA64_LTOFF22, "LTOFF22", 0, FALSE, TRUE),
380 IA64_HOWTO (R_IA64_LTOFF64I, "LTOFF64I", 0, FALSE, TRUE),
381
382 IA64_HOWTO (R_IA64_PLTOFF22, "PLTOFF22", 0, FALSE, TRUE),
383 IA64_HOWTO (R_IA64_PLTOFF64I, "PLTOFF64I", 0, FALSE, TRUE),
384 IA64_HOWTO (R_IA64_PLTOFF64MSB, "PLTOFF64MSB", 4, FALSE, TRUE),
385 IA64_HOWTO (R_IA64_PLTOFF64LSB, "PLTOFF64LSB", 4, FALSE, TRUE),
386
387 IA64_HOWTO (R_IA64_FPTR64I, "FPTR64I", 0, FALSE, TRUE),
388 IA64_HOWTO (R_IA64_FPTR32MSB, "FPTR32MSB", 2, FALSE, TRUE),
389 IA64_HOWTO (R_IA64_FPTR32LSB, "FPTR32LSB", 2, FALSE, TRUE),
390 IA64_HOWTO (R_IA64_FPTR64MSB, "FPTR64MSB", 4, FALSE, TRUE),
391 IA64_HOWTO (R_IA64_FPTR64LSB, "FPTR64LSB", 4, FALSE, TRUE),
392
393 IA64_HOWTO (R_IA64_PCREL60B, "PCREL60B", 0, TRUE, TRUE),
394 IA64_HOWTO (R_IA64_PCREL21B, "PCREL21B", 0, TRUE, TRUE),
395 IA64_HOWTO (R_IA64_PCREL21M, "PCREL21M", 0, TRUE, TRUE),
396 IA64_HOWTO (R_IA64_PCREL21F, "PCREL21F", 0, TRUE, TRUE),
397 IA64_HOWTO (R_IA64_PCREL32MSB, "PCREL32MSB", 2, TRUE, TRUE),
398 IA64_HOWTO (R_IA64_PCREL32LSB, "PCREL32LSB", 2, TRUE, TRUE),
399 IA64_HOWTO (R_IA64_PCREL64MSB, "PCREL64MSB", 4, TRUE, TRUE),
400 IA64_HOWTO (R_IA64_PCREL64LSB, "PCREL64LSB", 4, TRUE, TRUE),
401
402 IA64_HOWTO (R_IA64_LTOFF_FPTR22, "LTOFF_FPTR22", 0, FALSE, TRUE),
403 IA64_HOWTO (R_IA64_LTOFF_FPTR64I, "LTOFF_FPTR64I", 0, FALSE, TRUE),
404 IA64_HOWTO (R_IA64_LTOFF_FPTR32MSB, "LTOFF_FPTR32MSB", 2, FALSE, TRUE),
405 IA64_HOWTO (R_IA64_LTOFF_FPTR32LSB, "LTOFF_FPTR32LSB", 2, FALSE, TRUE),
406 IA64_HOWTO (R_IA64_LTOFF_FPTR64MSB, "LTOFF_FPTR64MSB", 4, FALSE, TRUE),
407 IA64_HOWTO (R_IA64_LTOFF_FPTR64LSB, "LTOFF_FPTR64LSB", 4, FALSE, TRUE),
408
409 IA64_HOWTO (R_IA64_SEGREL32MSB, "SEGREL32MSB", 2, FALSE, TRUE),
410 IA64_HOWTO (R_IA64_SEGREL32LSB, "SEGREL32LSB", 2, FALSE, TRUE),
411 IA64_HOWTO (R_IA64_SEGREL64MSB, "SEGREL64MSB", 4, FALSE, TRUE),
412 IA64_HOWTO (R_IA64_SEGREL64LSB, "SEGREL64LSB", 4, FALSE, TRUE),
413
414 IA64_HOWTO (R_IA64_SECREL32MSB, "SECREL32MSB", 2, FALSE, TRUE),
415 IA64_HOWTO (R_IA64_SECREL32LSB, "SECREL32LSB", 2, FALSE, TRUE),
416 IA64_HOWTO (R_IA64_SECREL64MSB, "SECREL64MSB", 4, FALSE, TRUE),
417 IA64_HOWTO (R_IA64_SECREL64LSB, "SECREL64LSB", 4, FALSE, TRUE),
418
419 IA64_HOWTO (R_IA64_REL32MSB, "REL32MSB", 2, FALSE, TRUE),
420 IA64_HOWTO (R_IA64_REL32LSB, "REL32LSB", 2, FALSE, TRUE),
421 IA64_HOWTO (R_IA64_REL64MSB, "REL64MSB", 4, FALSE, TRUE),
422 IA64_HOWTO (R_IA64_REL64LSB, "REL64LSB", 4, FALSE, TRUE),
423
424 IA64_HOWTO (R_IA64_LTV32MSB, "LTV32MSB", 2, FALSE, TRUE),
425 IA64_HOWTO (R_IA64_LTV32LSB, "LTV32LSB", 2, FALSE, TRUE),
426 IA64_HOWTO (R_IA64_LTV64MSB, "LTV64MSB", 4, FALSE, TRUE),
427 IA64_HOWTO (R_IA64_LTV64LSB, "LTV64LSB", 4, FALSE, TRUE),
428
429 IA64_HOWTO (R_IA64_PCREL21BI, "PCREL21BI", 0, TRUE, TRUE),
430 IA64_HOWTO (R_IA64_PCREL22, "PCREL22", 0, TRUE, TRUE),
431 IA64_HOWTO (R_IA64_PCREL64I, "PCREL64I", 0, TRUE, TRUE),
432
433 IA64_HOWTO (R_IA64_IPLTMSB, "IPLTMSB", 4, FALSE, TRUE),
434 IA64_HOWTO (R_IA64_IPLTLSB, "IPLTLSB", 4, FALSE, TRUE),
435 IA64_HOWTO (R_IA64_COPY, "COPY", 4, FALSE, TRUE),
436 IA64_HOWTO (R_IA64_LTOFF22X, "LTOFF22X", 0, FALSE, TRUE),
437 IA64_HOWTO (R_IA64_LDXMOV, "LDXMOV", 0, FALSE, TRUE),
438
439 IA64_HOWTO (R_IA64_TPREL14, "TPREL14", 0, FALSE, FALSE),
440 IA64_HOWTO (R_IA64_TPREL22, "TPREL22", 0, FALSE, FALSE),
441 IA64_HOWTO (R_IA64_TPREL64I, "TPREL64I", 0, FALSE, FALSE),
442 IA64_HOWTO (R_IA64_TPREL64MSB, "TPREL64MSB", 4, FALSE, FALSE),
443 IA64_HOWTO (R_IA64_TPREL64LSB, "TPREL64LSB", 4, FALSE, FALSE),
444 IA64_HOWTO (R_IA64_LTOFF_TPREL22, "LTOFF_TPREL22", 0, FALSE, FALSE),
445
446 IA64_HOWTO (R_IA64_DTPMOD64MSB, "DTPMOD64MSB", 4, FALSE, FALSE),
447 IA64_HOWTO (R_IA64_DTPMOD64LSB, "DTPMOD64LSB", 4, FALSE, FALSE),
448 IA64_HOWTO (R_IA64_LTOFF_DTPMOD22, "LTOFF_DTPMOD22", 0, FALSE, FALSE),
449
450 IA64_HOWTO (R_IA64_DTPREL14, "DTPREL14", 0, FALSE, FALSE),
451 IA64_HOWTO (R_IA64_DTPREL22, "DTPREL22", 0, FALSE, FALSE),
452 IA64_HOWTO (R_IA64_DTPREL64I, "DTPREL64I", 0, FALSE, FALSE),
453 IA64_HOWTO (R_IA64_DTPREL32MSB, "DTPREL32MSB", 2, FALSE, FALSE),
454 IA64_HOWTO (R_IA64_DTPREL32LSB, "DTPREL32LSB", 2, FALSE, FALSE),
455 IA64_HOWTO (R_IA64_DTPREL64MSB, "DTPREL64MSB", 4, FALSE, FALSE),
456 IA64_HOWTO (R_IA64_DTPREL64LSB, "DTPREL64LSB", 4, FALSE, FALSE),
457 IA64_HOWTO (R_IA64_LTOFF_DTPREL22, "LTOFF_DTPREL22", 0, FALSE, FALSE),
458 };
459
460 static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1];
461
462 /* Given a BFD reloc type, return the matching HOWTO structure. */
463
464 static reloc_howto_type *
465 lookup_howto (rtype)
466 unsigned int rtype;
467 {
468 static int inited = 0;
469 int i;
470
471 if (!inited)
472 {
473 inited = 1;
474
475 memset (elf_code_to_howto_index, 0xff, sizeof (elf_code_to_howto_index));
476 for (i = 0; i < NELEMS (ia64_howto_table); ++i)
477 elf_code_to_howto_index[ia64_howto_table[i].type] = i;
478 }
479
480 BFD_ASSERT (rtype <= R_IA64_MAX_RELOC_CODE);
481 i = elf_code_to_howto_index[rtype];
482 if (i >= NELEMS (ia64_howto_table))
483 return 0;
484 return ia64_howto_table + i;
485 }
486
487 static reloc_howto_type*
488 elfNN_ia64_reloc_type_lookup (abfd, bfd_code)
489 bfd *abfd ATTRIBUTE_UNUSED;
490 bfd_reloc_code_real_type bfd_code;
491 {
492 unsigned int rtype;
493
494 switch (bfd_code)
495 {
496 case BFD_RELOC_NONE: rtype = R_IA64_NONE; break;
497
498 case BFD_RELOC_IA64_IMM14: rtype = R_IA64_IMM14; break;
499 case BFD_RELOC_IA64_IMM22: rtype = R_IA64_IMM22; break;
500 case BFD_RELOC_IA64_IMM64: rtype = R_IA64_IMM64; break;
501
502 case BFD_RELOC_IA64_DIR32MSB: rtype = R_IA64_DIR32MSB; break;
503 case BFD_RELOC_IA64_DIR32LSB: rtype = R_IA64_DIR32LSB; break;
504 case BFD_RELOC_IA64_DIR64MSB: rtype = R_IA64_DIR64MSB; break;
505 case BFD_RELOC_IA64_DIR64LSB: rtype = R_IA64_DIR64LSB; break;
506
507 case BFD_RELOC_IA64_GPREL22: rtype = R_IA64_GPREL22; break;
508 case BFD_RELOC_IA64_GPREL64I: rtype = R_IA64_GPREL64I; break;
509 case BFD_RELOC_IA64_GPREL32MSB: rtype = R_IA64_GPREL32MSB; break;
510 case BFD_RELOC_IA64_GPREL32LSB: rtype = R_IA64_GPREL32LSB; break;
511 case BFD_RELOC_IA64_GPREL64MSB: rtype = R_IA64_GPREL64MSB; break;
512 case BFD_RELOC_IA64_GPREL64LSB: rtype = R_IA64_GPREL64LSB; break;
513
514 case BFD_RELOC_IA64_LTOFF22: rtype = R_IA64_LTOFF22; break;
515 case BFD_RELOC_IA64_LTOFF64I: rtype = R_IA64_LTOFF64I; break;
516
517 case BFD_RELOC_IA64_PLTOFF22: rtype = R_IA64_PLTOFF22; break;
518 case BFD_RELOC_IA64_PLTOFF64I: rtype = R_IA64_PLTOFF64I; break;
519 case BFD_RELOC_IA64_PLTOFF64MSB: rtype = R_IA64_PLTOFF64MSB; break;
520 case BFD_RELOC_IA64_PLTOFF64LSB: rtype = R_IA64_PLTOFF64LSB; break;
521 case BFD_RELOC_IA64_FPTR64I: rtype = R_IA64_FPTR64I; break;
522 case BFD_RELOC_IA64_FPTR32MSB: rtype = R_IA64_FPTR32MSB; break;
523 case BFD_RELOC_IA64_FPTR32LSB: rtype = R_IA64_FPTR32LSB; break;
524 case BFD_RELOC_IA64_FPTR64MSB: rtype = R_IA64_FPTR64MSB; break;
525 case BFD_RELOC_IA64_FPTR64LSB: rtype = R_IA64_FPTR64LSB; break;
526
527 case BFD_RELOC_IA64_PCREL21B: rtype = R_IA64_PCREL21B; break;
528 case BFD_RELOC_IA64_PCREL21BI: rtype = R_IA64_PCREL21BI; break;
529 case BFD_RELOC_IA64_PCREL21M: rtype = R_IA64_PCREL21M; break;
530 case BFD_RELOC_IA64_PCREL21F: rtype = R_IA64_PCREL21F; break;
531 case BFD_RELOC_IA64_PCREL22: rtype = R_IA64_PCREL22; break;
532 case BFD_RELOC_IA64_PCREL60B: rtype = R_IA64_PCREL60B; break;
533 case BFD_RELOC_IA64_PCREL64I: rtype = R_IA64_PCREL64I; break;
534 case BFD_RELOC_IA64_PCREL32MSB: rtype = R_IA64_PCREL32MSB; break;
535 case BFD_RELOC_IA64_PCREL32LSB: rtype = R_IA64_PCREL32LSB; break;
536 case BFD_RELOC_IA64_PCREL64MSB: rtype = R_IA64_PCREL64MSB; break;
537 case BFD_RELOC_IA64_PCREL64LSB: rtype = R_IA64_PCREL64LSB; break;
538
539 case BFD_RELOC_IA64_LTOFF_FPTR22: rtype = R_IA64_LTOFF_FPTR22; break;
540 case BFD_RELOC_IA64_LTOFF_FPTR64I: rtype = R_IA64_LTOFF_FPTR64I; break;
541 case BFD_RELOC_IA64_LTOFF_FPTR32MSB: rtype = R_IA64_LTOFF_FPTR32MSB; break;
542 case BFD_RELOC_IA64_LTOFF_FPTR32LSB: rtype = R_IA64_LTOFF_FPTR32LSB; break;
543 case BFD_RELOC_IA64_LTOFF_FPTR64MSB: rtype = R_IA64_LTOFF_FPTR64MSB; break;
544 case BFD_RELOC_IA64_LTOFF_FPTR64LSB: rtype = R_IA64_LTOFF_FPTR64LSB; break;
545
546 case BFD_RELOC_IA64_SEGREL32MSB: rtype = R_IA64_SEGREL32MSB; break;
547 case BFD_RELOC_IA64_SEGREL32LSB: rtype = R_IA64_SEGREL32LSB; break;
548 case BFD_RELOC_IA64_SEGREL64MSB: rtype = R_IA64_SEGREL64MSB; break;
549 case BFD_RELOC_IA64_SEGREL64LSB: rtype = R_IA64_SEGREL64LSB; break;
550
551 case BFD_RELOC_IA64_SECREL32MSB: rtype = R_IA64_SECREL32MSB; break;
552 case BFD_RELOC_IA64_SECREL32LSB: rtype = R_IA64_SECREL32LSB; break;
553 case BFD_RELOC_IA64_SECREL64MSB: rtype = R_IA64_SECREL64MSB; break;
554 case BFD_RELOC_IA64_SECREL64LSB: rtype = R_IA64_SECREL64LSB; break;
555
556 case BFD_RELOC_IA64_REL32MSB: rtype = R_IA64_REL32MSB; break;
557 case BFD_RELOC_IA64_REL32LSB: rtype = R_IA64_REL32LSB; break;
558 case BFD_RELOC_IA64_REL64MSB: rtype = R_IA64_REL64MSB; break;
559 case BFD_RELOC_IA64_REL64LSB: rtype = R_IA64_REL64LSB; break;
560
561 case BFD_RELOC_IA64_LTV32MSB: rtype = R_IA64_LTV32MSB; break;
562 case BFD_RELOC_IA64_LTV32LSB: rtype = R_IA64_LTV32LSB; break;
563 case BFD_RELOC_IA64_LTV64MSB: rtype = R_IA64_LTV64MSB; break;
564 case BFD_RELOC_IA64_LTV64LSB: rtype = R_IA64_LTV64LSB; break;
565
566 case BFD_RELOC_IA64_IPLTMSB: rtype = R_IA64_IPLTMSB; break;
567 case BFD_RELOC_IA64_IPLTLSB: rtype = R_IA64_IPLTLSB; break;
568 case BFD_RELOC_IA64_COPY: rtype = R_IA64_COPY; break;
569 case BFD_RELOC_IA64_LTOFF22X: rtype = R_IA64_LTOFF22X; break;
570 case BFD_RELOC_IA64_LDXMOV: rtype = R_IA64_LDXMOV; break;
571
572 case BFD_RELOC_IA64_TPREL14: rtype = R_IA64_TPREL14; break;
573 case BFD_RELOC_IA64_TPREL22: rtype = R_IA64_TPREL22; break;
574 case BFD_RELOC_IA64_TPREL64I: rtype = R_IA64_TPREL64I; break;
575 case BFD_RELOC_IA64_TPREL64MSB: rtype = R_IA64_TPREL64MSB; break;
576 case BFD_RELOC_IA64_TPREL64LSB: rtype = R_IA64_TPREL64LSB; break;
577 case BFD_RELOC_IA64_LTOFF_TPREL22: rtype = R_IA64_LTOFF_TPREL22; break;
578
579 case BFD_RELOC_IA64_DTPMOD64MSB: rtype = R_IA64_DTPMOD64MSB; break;
580 case BFD_RELOC_IA64_DTPMOD64LSB: rtype = R_IA64_DTPMOD64LSB; break;
581 case BFD_RELOC_IA64_LTOFF_DTPMOD22: rtype = R_IA64_LTOFF_DTPMOD22; break;
582
583 case BFD_RELOC_IA64_DTPREL14: rtype = R_IA64_DTPREL14; break;
584 case BFD_RELOC_IA64_DTPREL22: rtype = R_IA64_DTPREL22; break;
585 case BFD_RELOC_IA64_DTPREL64I: rtype = R_IA64_DTPREL64I; break;
586 case BFD_RELOC_IA64_DTPREL32MSB: rtype = R_IA64_DTPREL32MSB; break;
587 case BFD_RELOC_IA64_DTPREL32LSB: rtype = R_IA64_DTPREL32LSB; break;
588 case BFD_RELOC_IA64_DTPREL64MSB: rtype = R_IA64_DTPREL64MSB; break;
589 case BFD_RELOC_IA64_DTPREL64LSB: rtype = R_IA64_DTPREL64LSB; break;
590 case BFD_RELOC_IA64_LTOFF_DTPREL22: rtype = R_IA64_LTOFF_DTPREL22; break;
591
592 default: return 0;
593 }
594 return lookup_howto (rtype);
595 }
596
597 /* Given a ELF reloc, return the matching HOWTO structure. */
598
599 static void
600 elfNN_ia64_info_to_howto (abfd, bfd_reloc, elf_reloc)
601 bfd *abfd ATTRIBUTE_UNUSED;
602 arelent *bfd_reloc;
603 Elf_Internal_Rela *elf_reloc;
604 {
605 bfd_reloc->howto
606 = lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info));
607 }
608 \f
609 #define PLT_HEADER_SIZE (3 * 16)
610 #define PLT_MIN_ENTRY_SIZE (1 * 16)
611 #define PLT_FULL_ENTRY_SIZE (2 * 16)
612 #define PLT_RESERVED_WORDS 3
613
614 static const bfd_byte plt_header[PLT_HEADER_SIZE] =
615 {
616 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
617 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
618 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
619 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
620 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
621 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
622 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
623 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
624 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
625 };
626
627 static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
628 {
629 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
630 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
631 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
632 };
633
634 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
635 {
636 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
637 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
638 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
639 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
640 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
641 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
642 };
643
644 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
645
646 static const bfd_byte oor_brl[16] =
647 {
648 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
649 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
650 0x00, 0x00, 0x00, 0xc0
651 };
652
653 static const bfd_byte oor_ip[48] =
654 {
655 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
656 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
657 0x01, 0x00, 0x00, 0x60,
658 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
659 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
660 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
661 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
662 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
663 0x60, 0x00, 0x80, 0x00 /* br b6;; */
664 };
665
666 static size_t oor_branch_size = sizeof (oor_brl);
667
668 void
669 bfd_elfNN_ia64_after_parse (int itanium)
670 {
671 oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
672 }
673
674 static void
675 elfNN_ia64_relax_brl (bfd_byte *contents, bfd_vma off)
676 {
677 unsigned int template, t0, t1, t2, t3;
678 bfd_byte *hit_addr;
679
680 hit_addr = (bfd_byte *) (contents + off);
681 hit_addr -= (long) hit_addr & 0x3;
682 t0 = bfd_getl32 (hit_addr + 0);
683 t1 = bfd_getl32 (hit_addr + 4);
684 t2 = bfd_getl32 (hit_addr + 8);
685 t3 = bfd_getl32 (hit_addr + 12);
686
687 /* Turn a MLX bundle into a MBB bundle with the same stop-bit
688 variety. */
689 template = 0x12;
690 if ((t0 & 0x1f) == 5)
691 template += 1;
692
693 /* Keep the instruction in slot 0. */
694 t0 &= 0xffffffe0;
695 t1 &= 0x3fff;
696
697 t0 |= template;
698
699 /* For slot 2, turn brl into br by masking out bit 40. */
700 t2 &= 0xff800000;
701 t3 &= 0x7fffffff;
702
703 /* Use nop.b for slot 1. */
704 t2 |= 0x100000;
705
706 bfd_putl32 (t0, hit_addr);
707 bfd_putl32 (t1, hit_addr + 4);
708 bfd_putl32 (t2, hit_addr + 8);
709 bfd_putl32 (t3, hit_addr + 12);
710 }
711 \f
712 /* These functions do relaxation for IA-64 ELF. */
713
714 static bfd_boolean
715 elfNN_ia64_relax_section (abfd, sec, link_info, again)
716 bfd *abfd;
717 asection *sec;
718 struct bfd_link_info *link_info;
719 bfd_boolean *again;
720 {
721 struct one_fixup
722 {
723 struct one_fixup *next;
724 asection *tsec;
725 bfd_vma toff;
726 bfd_vma trampoff;
727 };
728
729 Elf_Internal_Shdr *symtab_hdr;
730 Elf_Internal_Rela *internal_relocs;
731 Elf_Internal_Rela *irel, *irelend;
732 bfd_byte *contents;
733 Elf_Internal_Sym *isymbuf = NULL;
734 struct elfNN_ia64_link_hash_table *ia64_info;
735 struct one_fixup *fixups = NULL;
736 bfd_boolean changed_contents = FALSE;
737 bfd_boolean changed_relocs = FALSE;
738 bfd_boolean changed_got = FALSE;
739 bfd_vma gp = 0;
740
741 /* Assume we're not going to change any sizes, and we'll only need
742 one pass. */
743 *again = FALSE;
744
745 /* Don't even try to relax for non-ELF outputs. */
746 if (!is_elf_hash_table (link_info->hash))
747 return FALSE;
748
749 /* Nothing to do if there are no relocations or there is no need for
750 the relax finalize pass. */
751 if ((sec->flags & SEC_RELOC) == 0
752 || sec->reloc_count == 0
753 || (!link_info->need_relax_finalize
754 && sec->need_finalize_relax == 0))
755 return TRUE;
756
757 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
758
759 /* Load the relocations for this section. */
760 internal_relocs = (_bfd_elf_link_read_relocs
761 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
762 link_info->keep_memory));
763 if (internal_relocs == NULL)
764 return FALSE;
765
766 ia64_info = elfNN_ia64_hash_table (link_info);
767 irelend = internal_relocs + sec->reloc_count;
768
769 /* Get the section contents. */
770 if (elf_section_data (sec)->this_hdr.contents != NULL)
771 contents = elf_section_data (sec)->this_hdr.contents;
772 else
773 {
774 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
775 goto error_return;
776 }
777
778 for (irel = internal_relocs; irel < irelend; irel++)
779 {
780 unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
781 bfd_vma symaddr, reladdr, trampoff, toff, roff;
782 asection *tsec;
783 struct one_fixup *f;
784 bfd_size_type amt;
785 bfd_boolean is_branch;
786 struct elfNN_ia64_dyn_sym_info *dyn_i;
787 char symtype;
788
789 switch (r_type)
790 {
791 case R_IA64_PCREL21B:
792 case R_IA64_PCREL21BI:
793 case R_IA64_PCREL21M:
794 case R_IA64_PCREL21F:
795 /* In the finalize pass, all br relaxations are done. We can
796 skip it. */
797 if (!link_info->need_relax_finalize)
798 continue;
799 is_branch = TRUE;
800 break;
801
802 case R_IA64_PCREL60B:
803 /* We can't optimize brl to br before the finalize pass since
804 br relaxations will increase the code size. Defer it to
805 the finalize pass. */
806 if (link_info->need_relax_finalize)
807 {
808 sec->need_finalize_relax = 1;
809 continue;
810 }
811 is_branch = TRUE;
812 break;
813
814 case R_IA64_LTOFF22X:
815 case R_IA64_LDXMOV:
816 /* We can't relax ldx/mov before the finalize pass since
817 br relaxations will increase the code size. Defer it to
818 the finalize pass. */
819 if (link_info->need_relax_finalize)
820 {
821 sec->need_finalize_relax = 1;
822 continue;
823 }
824 is_branch = FALSE;
825 break;
826
827 default:
828 continue;
829 }
830
831 /* Get the value of the symbol referred to by the reloc. */
832 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
833 {
834 /* A local symbol. */
835 Elf_Internal_Sym *isym;
836
837 /* Read this BFD's local symbols. */
838 if (isymbuf == NULL)
839 {
840 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
841 if (isymbuf == NULL)
842 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
843 symtab_hdr->sh_info, 0,
844 NULL, NULL, NULL);
845 if (isymbuf == 0)
846 goto error_return;
847 }
848
849 isym = isymbuf + ELFNN_R_SYM (irel->r_info);
850 if (isym->st_shndx == SHN_UNDEF)
851 continue; /* We can't do anything with undefined symbols. */
852 else if (isym->st_shndx == SHN_ABS)
853 tsec = bfd_abs_section_ptr;
854 else if (isym->st_shndx == SHN_COMMON)
855 tsec = bfd_com_section_ptr;
856 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
857 tsec = bfd_com_section_ptr;
858 else
859 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
860
861 toff = isym->st_value;
862 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
863 symtype = ELF_ST_TYPE (isym->st_info);
864 }
865 else
866 {
867 unsigned long indx;
868 struct elf_link_hash_entry *h;
869
870 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
871 h = elf_sym_hashes (abfd)[indx];
872 BFD_ASSERT (h != NULL);
873
874 while (h->root.type == bfd_link_hash_indirect
875 || h->root.type == bfd_link_hash_warning)
876 h = (struct elf_link_hash_entry *) h->root.u.i.link;
877
878 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
879
880 /* For branches to dynamic symbols, we're interested instead
881 in a branch to the PLT entry. */
882 if (is_branch && dyn_i && dyn_i->want_plt2)
883 {
884 /* Internal branches shouldn't be sent to the PLT.
885 Leave this for now and we'll give an error later. */
886 if (r_type != R_IA64_PCREL21B)
887 continue;
888
889 tsec = ia64_info->plt_sec;
890 toff = dyn_i->plt2_offset;
891 BFD_ASSERT (irel->r_addend == 0);
892 }
893
894 /* Can't do anything else with dynamic symbols. */
895 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
896 continue;
897
898 else
899 {
900 /* We can't do anything with undefined symbols. */
901 if (h->root.type == bfd_link_hash_undefined
902 || h->root.type == bfd_link_hash_undefweak)
903 continue;
904
905 tsec = h->root.u.def.section;
906 toff = h->root.u.def.value;
907 }
908
909 symtype = h->type;
910 }
911
912 if (tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
913 {
914 /* At this stage in linking, no SEC_MERGE symbol has been
915 adjusted, so all references to such symbols need to be
916 passed through _bfd_merged_section_offset. (Later, in
917 relocate_section, all SEC_MERGE symbols *except* for
918 section symbols have been adjusted.)
919
920 gas may reduce relocations against symbols in SEC_MERGE
921 sections to a relocation against the section symbol when
922 the original addend was zero. When the reloc is against
923 a section symbol we should include the addend in the
924 offset passed to _bfd_merged_section_offset, since the
925 location of interest is the original symbol. On the
926 other hand, an access to "sym+addend" where "sym" is not
927 a section symbol should not include the addend; Such an
928 access is presumed to be an offset from "sym"; The
929 location of interest is just "sym". */
930 if (symtype == STT_SECTION)
931 toff += irel->r_addend;
932
933 toff = _bfd_merged_section_offset (abfd, &tsec,
934 elf_section_data (tsec)->sec_info,
935 toff);
936
937 if (symtype != STT_SECTION)
938 toff += irel->r_addend;
939 }
940 else
941 toff += irel->r_addend;
942
943 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
944
945 roff = irel->r_offset;
946
947 if (is_branch)
948 {
949 bfd_signed_vma offset;
950
951 reladdr = (sec->output_section->vma
952 + sec->output_offset
953 + roff) & (bfd_vma) -4;
954
955 /* If the branch is in range, no need to do anything. */
956 if ((bfd_signed_vma) (symaddr - reladdr) >= -0x1000000
957 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
958 {
959 /* If the 60-bit branch is in 21-bit range, optimize it. */
960 if (r_type == R_IA64_PCREL60B)
961 {
962 elfNN_ia64_relax_brl (contents, roff);
963
964 irel->r_info
965 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
966 R_IA64_PCREL21B);
967
968 /* If the original relocation offset points to slot
969 1, change it to slot 2. */
970 if ((irel->r_offset & 3) == 1)
971 irel->r_offset += 1;
972 }
973
974 continue;
975 }
976 else if (r_type == R_IA64_PCREL60B)
977 continue;
978
979 /* We can't put a trampoline in a .init/.fini section. Issue
980 an error. */
981 if (strcmp (sec->output_section->name, ".init") == 0
982 || strcmp (sec->output_section->name, ".fini") == 0)
983 {
984 (*_bfd_error_handler)
985 (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."),
986 sec->owner, sec, (unsigned long) roff);
987 bfd_set_error (bfd_error_bad_value);
988 goto error_return;
989 }
990
991 /* If the branch and target are in the same section, you've
992 got one honking big section and we can't help you unless
993 you are branching backwards. You'll get an error message
994 later. */
995 if (tsec == sec && toff > roff)
996 continue;
997
998 /* Look for an existing fixup to this address. */
999 for (f = fixups; f ; f = f->next)
1000 if (f->tsec == tsec && f->toff == toff)
1001 break;
1002
1003 if (f == NULL)
1004 {
1005 /* Two alternatives: If it's a branch to a PLT entry, we can
1006 make a copy of the FULL_PLT entry. Otherwise, we'll have
1007 to use a `brl' insn to get where we're going. */
1008
1009 size_t size;
1010
1011 if (tsec == ia64_info->plt_sec)
1012 size = sizeof (plt_full_entry);
1013 else
1014 size = oor_branch_size;
1015
1016 /* Resize the current section to make room for the new branch. */
1017 trampoff = (sec->size + 15) & (bfd_vma) -16;
1018
1019 /* If trampoline is out of range, there is nothing we
1020 can do. */
1021 offset = trampoff - (roff & (bfd_vma) -4);
1022 if (offset < -0x1000000 || offset > 0x0FFFFF0)
1023 continue;
1024
1025 amt = trampoff + size;
1026 contents = (bfd_byte *) bfd_realloc (contents, amt);
1027 if (contents == NULL)
1028 goto error_return;
1029 sec->size = amt;
1030
1031 if (tsec == ia64_info->plt_sec)
1032 {
1033 memcpy (contents + trampoff, plt_full_entry, size);
1034
1035 /* Hijack the old relocation for use as the PLTOFF reloc. */
1036 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1037 R_IA64_PLTOFF22);
1038 irel->r_offset = trampoff;
1039 }
1040 else
1041 {
1042 if (size == sizeof (oor_ip))
1043 {
1044 memcpy (contents + trampoff, oor_ip, size);
1045 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1046 R_IA64_PCREL64I);
1047 irel->r_addend -= 16;
1048 irel->r_offset = trampoff + 2;
1049 }
1050 else
1051 {
1052 memcpy (contents + trampoff, oor_brl, size);
1053 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1054 R_IA64_PCREL60B);
1055 irel->r_offset = trampoff + 2;
1056 }
1057
1058 }
1059
1060 /* Record the fixup so we don't do it again this section. */
1061 f = (struct one_fixup *)
1062 bfd_malloc ((bfd_size_type) sizeof (*f));
1063 f->next = fixups;
1064 f->tsec = tsec;
1065 f->toff = toff;
1066 f->trampoff = trampoff;
1067 fixups = f;
1068 }
1069 else
1070 {
1071 /* If trampoline is out of range, there is nothing we
1072 can do. */
1073 offset = f->trampoff - (roff & (bfd_vma) -4);
1074 if (offset < -0x1000000 || offset > 0x0FFFFF0)
1075 continue;
1076
1077 /* Nop out the reloc, since we're finalizing things here. */
1078 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
1079 }
1080
1081 /* Fix up the existing branch to hit the trampoline. */
1082 if (elfNN_ia64_install_value (contents + roff, offset, r_type)
1083 != bfd_reloc_ok)
1084 goto error_return;
1085
1086 changed_contents = TRUE;
1087 changed_relocs = TRUE;
1088 }
1089 else
1090 {
1091 /* Fetch the gp. */
1092 if (gp == 0)
1093 {
1094 bfd *obfd = sec->output_section->owner;
1095 gp = _bfd_get_gp_value (obfd);
1096 if (gp == 0)
1097 {
1098 if (!elfNN_ia64_choose_gp (obfd, link_info))
1099 goto error_return;
1100 gp = _bfd_get_gp_value (obfd);
1101 }
1102 }
1103
1104 /* If the data is out of range, do nothing. */
1105 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
1106 ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
1107 continue;
1108
1109 if (r_type == R_IA64_LTOFF22X)
1110 {
1111 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1112 R_IA64_GPREL22);
1113 changed_relocs = TRUE;
1114 if (dyn_i->want_gotx)
1115 {
1116 dyn_i->want_gotx = 0;
1117 changed_got |= !dyn_i->want_got;
1118 }
1119 }
1120 else
1121 {
1122 elfNN_ia64_relax_ldxmov (contents, roff);
1123 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
1124 changed_contents = TRUE;
1125 changed_relocs = TRUE;
1126 }
1127 }
1128 }
1129
1130 /* ??? If we created fixups, this may push the code segment large
1131 enough that the data segment moves, which will change the GP.
1132 Reset the GP so that we re-calculate next round. We need to
1133 do this at the _beginning_ of the next round; now will not do. */
1134
1135 /* Clean up and go home. */
1136 while (fixups)
1137 {
1138 struct one_fixup *f = fixups;
1139 fixups = fixups->next;
1140 free (f);
1141 }
1142
1143 if (isymbuf != NULL
1144 && symtab_hdr->contents != (unsigned char *) isymbuf)
1145 {
1146 if (! link_info->keep_memory)
1147 free (isymbuf);
1148 else
1149 {
1150 /* Cache the symbols for elf_link_input_bfd. */
1151 symtab_hdr->contents = (unsigned char *) isymbuf;
1152 }
1153 }
1154
1155 if (contents != NULL
1156 && elf_section_data (sec)->this_hdr.contents != contents)
1157 {
1158 if (!changed_contents && !link_info->keep_memory)
1159 free (contents);
1160 else
1161 {
1162 /* Cache the section contents for elf_link_input_bfd. */
1163 elf_section_data (sec)->this_hdr.contents = contents;
1164 }
1165 }
1166
1167 if (elf_section_data (sec)->relocs != internal_relocs)
1168 {
1169 if (!changed_relocs)
1170 free (internal_relocs);
1171 else
1172 elf_section_data (sec)->relocs = internal_relocs;
1173 }
1174
1175 if (changed_got)
1176 {
1177 struct elfNN_ia64_allocate_data data;
1178 data.info = link_info;
1179 data.ofs = 0;
1180 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
1181
1182 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
1183 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
1184 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
1185 ia64_info->got_sec->size = data.ofs;
1186
1187 /* ??? Resize .rela.got too. */
1188 }
1189
1190 if (!link_info->need_relax_finalize)
1191 sec->need_finalize_relax = 0;
1192
1193 *again = changed_contents || changed_relocs;
1194 return TRUE;
1195
1196 error_return:
1197 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
1198 free (isymbuf);
1199 if (contents != NULL
1200 && elf_section_data (sec)->this_hdr.contents != contents)
1201 free (contents);
1202 if (internal_relocs != NULL
1203 && elf_section_data (sec)->relocs != internal_relocs)
1204 free (internal_relocs);
1205 return FALSE;
1206 }
1207
1208 static void
1209 elfNN_ia64_relax_ldxmov (contents, off)
1210 bfd_byte *contents;
1211 bfd_vma off;
1212 {
1213 int shift, r1, r3;
1214 bfd_vma dword, insn;
1215
1216 switch ((int)off & 0x3)
1217 {
1218 case 0: shift = 5; break;
1219 case 1: shift = 14; off += 3; break;
1220 case 2: shift = 23; off += 6; break;
1221 default:
1222 abort ();
1223 }
1224
1225 dword = bfd_getl64 (contents + off);
1226 insn = (dword >> shift) & 0x1ffffffffffLL;
1227
1228 r1 = (insn >> 6) & 127;
1229 r3 = (insn >> 20) & 127;
1230 if (r1 == r3)
1231 insn = 0x8000000; /* nop */
1232 else
1233 insn = (insn & 0x7f01fff) | 0x10800000000LL; /* (qp) mov r1 = r3 */
1234
1235 dword &= ~(0x1ffffffffffLL << shift);
1236 dword |= (insn << shift);
1237 bfd_putl64 (dword, contents + off);
1238 }
1239 \f
1240 /* Return TRUE if NAME is an unwind table section name. */
1241
1242 static inline bfd_boolean
1243 is_unwind_section_name (abfd, name)
1244 bfd *abfd;
1245 const char *name;
1246 {
1247 size_t len1, len2, len3;
1248
1249 if (elfNN_ia64_hpux_vec (abfd->xvec)
1250 && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
1251 return FALSE;
1252
1253 len1 = sizeof (ELF_STRING_ia64_unwind) - 1;
1254 len2 = sizeof (ELF_STRING_ia64_unwind_info) - 1;
1255 len3 = sizeof (ELF_STRING_ia64_unwind_once) - 1;
1256 return ((strncmp (name, ELF_STRING_ia64_unwind, len1) == 0
1257 && strncmp (name, ELF_STRING_ia64_unwind_info, len2) != 0)
1258 || strncmp (name, ELF_STRING_ia64_unwind_once, len3) == 0);
1259 }
1260
1261 /* Handle an IA-64 specific section when reading an object file. This
1262 is called when bfd_section_from_shdr finds a section with an unknown
1263 type. */
1264
1265 static bfd_boolean
1266 elfNN_ia64_section_from_shdr (bfd *abfd,
1267 Elf_Internal_Shdr *hdr,
1268 const char *name,
1269 int shindex)
1270 {
1271 asection *newsect;
1272
1273 /* There ought to be a place to keep ELF backend specific flags, but
1274 at the moment there isn't one. We just keep track of the
1275 sections by their name, instead. Fortunately, the ABI gives
1276 suggested names for all the MIPS specific sections, so we will
1277 probably get away with this. */
1278 switch (hdr->sh_type)
1279 {
1280 case SHT_IA_64_UNWIND:
1281 case SHT_IA_64_HP_OPT_ANOT:
1282 break;
1283
1284 case SHT_IA_64_EXT:
1285 if (strcmp (name, ELF_STRING_ia64_archext) != 0)
1286 return FALSE;
1287 break;
1288
1289 default:
1290 return FALSE;
1291 }
1292
1293 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1294 return FALSE;
1295 newsect = hdr->bfd_section;
1296
1297 return TRUE;
1298 }
1299
1300 /* Convert IA-64 specific section flags to bfd internal section flags. */
1301
1302 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
1303 flag. */
1304
1305 static bfd_boolean
1306 elfNN_ia64_section_flags (flags, hdr)
1307 flagword *flags;
1308 const Elf_Internal_Shdr *hdr;
1309 {
1310 if (hdr->sh_flags & SHF_IA_64_SHORT)
1311 *flags |= SEC_SMALL_DATA;
1312
1313 return TRUE;
1314 }
1315
1316 /* Set the correct type for an IA-64 ELF section. We do this by the
1317 section name, which is a hack, but ought to work. */
1318
1319 static bfd_boolean
1320 elfNN_ia64_fake_sections (abfd, hdr, sec)
1321 bfd *abfd ATTRIBUTE_UNUSED;
1322 Elf_Internal_Shdr *hdr;
1323 asection *sec;
1324 {
1325 register const char *name;
1326
1327 name = bfd_get_section_name (abfd, sec);
1328
1329 if (is_unwind_section_name (abfd, name))
1330 {
1331 /* We don't have the sections numbered at this point, so sh_info
1332 is set later, in elfNN_ia64_final_write_processing. */
1333 hdr->sh_type = SHT_IA_64_UNWIND;
1334 hdr->sh_flags |= SHF_LINK_ORDER;
1335 }
1336 else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
1337 hdr->sh_type = SHT_IA_64_EXT;
1338 else if (strcmp (name, ".HP.opt_annot") == 0)
1339 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
1340 else if (strcmp (name, ".reloc") == 0)
1341 /* This is an ugly, but unfortunately necessary hack that is
1342 needed when producing EFI binaries on IA-64. It tells
1343 elf.c:elf_fake_sections() not to consider ".reloc" as a section
1344 containing ELF relocation info. We need this hack in order to
1345 be able to generate ELF binaries that can be translated into
1346 EFI applications (which are essentially COFF objects). Those
1347 files contain a COFF ".reloc" section inside an ELFNN object,
1348 which would normally cause BFD to segfault because it would
1349 attempt to interpret this section as containing relocation
1350 entries for section "oc". With this hack enabled, ".reloc"
1351 will be treated as a normal data section, which will avoid the
1352 segfault. However, you won't be able to create an ELFNN binary
1353 with a section named "oc" that needs relocations, but that's
1354 the kind of ugly side-effects you get when detecting section
1355 types based on their names... In practice, this limitation is
1356 unlikely to bite. */
1357 hdr->sh_type = SHT_PROGBITS;
1358
1359 if (sec->flags & SEC_SMALL_DATA)
1360 hdr->sh_flags |= SHF_IA_64_SHORT;
1361
1362 return TRUE;
1363 }
1364
1365 /* The final processing done just before writing out an IA-64 ELF
1366 object file. */
1367
1368 static void
1369 elfNN_ia64_final_write_processing (abfd, linker)
1370 bfd *abfd;
1371 bfd_boolean linker ATTRIBUTE_UNUSED;
1372 {
1373 Elf_Internal_Shdr *hdr;
1374 asection *s;
1375
1376 for (s = abfd->sections; s; s = s->next)
1377 {
1378 hdr = &elf_section_data (s)->this_hdr;
1379 switch (hdr->sh_type)
1380 {
1381 case SHT_IA_64_UNWIND:
1382 /* The IA-64 processor-specific ABI requires setting sh_link
1383 to the unwind section, whereas HP-UX requires sh_info to
1384 do so. For maximum compatibility, we'll set both for
1385 now... */
1386 hdr->sh_info = hdr->sh_link;
1387 break;
1388 }
1389 }
1390
1391 if (! elf_flags_init (abfd))
1392 {
1393 unsigned long flags = 0;
1394
1395 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1396 flags |= EF_IA_64_BE;
1397 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1398 flags |= EF_IA_64_ABI64;
1399
1400 elf_elfheader(abfd)->e_flags = flags;
1401 elf_flags_init (abfd) = TRUE;
1402 }
1403 }
1404
1405 /* Hook called by the linker routine which adds symbols from an object
1406 file. We use it to put .comm items in .sbss, and not .bss. */
1407
1408 static bfd_boolean
1409 elfNN_ia64_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1410 bfd *abfd;
1411 struct bfd_link_info *info;
1412 Elf_Internal_Sym *sym;
1413 const char **namep ATTRIBUTE_UNUSED;
1414 flagword *flagsp ATTRIBUTE_UNUSED;
1415 asection **secp;
1416 bfd_vma *valp;
1417 {
1418 if (sym->st_shndx == SHN_COMMON
1419 && !info->relocatable
1420 && sym->st_size <= elf_gp_size (abfd))
1421 {
1422 /* Common symbols less than or equal to -G nn bytes are
1423 automatically put into .sbss. */
1424
1425 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1426
1427 if (scomm == NULL)
1428 {
1429 scomm = bfd_make_section (abfd, ".scommon");
1430 if (scomm == NULL
1431 || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC
1432 | SEC_IS_COMMON
1433 | SEC_LINKER_CREATED)))
1434 return FALSE;
1435 }
1436
1437 *secp = scomm;
1438 *valp = sym->st_size;
1439 }
1440
1441 return TRUE;
1442 }
1443
1444 /* Return the number of additional phdrs we will need. */
1445
1446 static int
1447 elfNN_ia64_additional_program_headers (abfd)
1448 bfd *abfd;
1449 {
1450 asection *s;
1451 int ret = 0;
1452
1453 /* See if we need a PT_IA_64_ARCHEXT segment. */
1454 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1455 if (s && (s->flags & SEC_LOAD))
1456 ++ret;
1457
1458 /* Count how many PT_IA_64_UNWIND segments we need. */
1459 for (s = abfd->sections; s; s = s->next)
1460 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1461 ++ret;
1462
1463 return ret;
1464 }
1465
1466 static bfd_boolean
1467 elfNN_ia64_modify_segment_map (abfd, info)
1468 bfd *abfd;
1469 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1470 {
1471 struct elf_segment_map *m, **pm;
1472 Elf_Internal_Shdr *hdr;
1473 asection *s;
1474
1475 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1476 all PT_LOAD segments. */
1477 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1478 if (s && (s->flags & SEC_LOAD))
1479 {
1480 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1481 if (m->p_type == PT_IA_64_ARCHEXT)
1482 break;
1483 if (m == NULL)
1484 {
1485 m = ((struct elf_segment_map *)
1486 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1487 if (m == NULL)
1488 return FALSE;
1489
1490 m->p_type = PT_IA_64_ARCHEXT;
1491 m->count = 1;
1492 m->sections[0] = s;
1493
1494 /* We want to put it after the PHDR and INTERP segments. */
1495 pm = &elf_tdata (abfd)->segment_map;
1496 while (*pm != NULL
1497 && ((*pm)->p_type == PT_PHDR
1498 || (*pm)->p_type == PT_INTERP))
1499 pm = &(*pm)->next;
1500
1501 m->next = *pm;
1502 *pm = m;
1503 }
1504 }
1505
1506 /* Install PT_IA_64_UNWIND segments, if needed. */
1507 for (s = abfd->sections; s; s = s->next)
1508 {
1509 hdr = &elf_section_data (s)->this_hdr;
1510 if (hdr->sh_type != SHT_IA_64_UNWIND)
1511 continue;
1512
1513 if (s && (s->flags & SEC_LOAD))
1514 {
1515 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1516 if (m->p_type == PT_IA_64_UNWIND)
1517 {
1518 int i;
1519
1520 /* Look through all sections in the unwind segment
1521 for a match since there may be multiple sections
1522 to a segment. */
1523 for (i = m->count - 1; i >= 0; --i)
1524 if (m->sections[i] == s)
1525 break;
1526
1527 if (i >= 0)
1528 break;
1529 }
1530
1531 if (m == NULL)
1532 {
1533 m = ((struct elf_segment_map *)
1534 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1535 if (m == NULL)
1536 return FALSE;
1537
1538 m->p_type = PT_IA_64_UNWIND;
1539 m->count = 1;
1540 m->sections[0] = s;
1541 m->next = NULL;
1542
1543 /* We want to put it last. */
1544 pm = &elf_tdata (abfd)->segment_map;
1545 while (*pm != NULL)
1546 pm = &(*pm)->next;
1547 *pm = m;
1548 }
1549 }
1550 }
1551
1552 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1553 the input sections for each output section in the segment and testing
1554 for SHF_IA_64_NORECOV on each. */
1555 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1556 if (m->p_type == PT_LOAD)
1557 {
1558 int i;
1559 for (i = m->count - 1; i >= 0; --i)
1560 {
1561 struct bfd_link_order *order = m->sections[i]->map_head.link_order;
1562 while (order)
1563 {
1564 if (order->type == bfd_indirect_link_order)
1565 {
1566 asection *is = order->u.indirect.section;
1567 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1568 if (flags & SHF_IA_64_NORECOV)
1569 {
1570 m->p_flags |= PF_IA_64_NORECOV;
1571 goto found;
1572 }
1573 }
1574 order = order->next;
1575 }
1576 }
1577 found:;
1578 }
1579
1580 return TRUE;
1581 }
1582
1583 /* According to the Tahoe assembler spec, all labels starting with a
1584 '.' are local. */
1585
1586 static bfd_boolean
1587 elfNN_ia64_is_local_label_name (abfd, name)
1588 bfd *abfd ATTRIBUTE_UNUSED;
1589 const char *name;
1590 {
1591 return name[0] == '.';
1592 }
1593
1594 /* Should we do dynamic things to this symbol? */
1595
1596 static bfd_boolean
1597 elfNN_ia64_dynamic_symbol_p (h, info, r_type)
1598 struct elf_link_hash_entry *h;
1599 struct bfd_link_info *info;
1600 int r_type;
1601 {
1602 bfd_boolean ignore_protected
1603 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1604 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1605
1606 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1607 }
1608 \f
1609 static struct bfd_hash_entry*
1610 elfNN_ia64_new_elf_hash_entry (entry, table, string)
1611 struct bfd_hash_entry *entry;
1612 struct bfd_hash_table *table;
1613 const char *string;
1614 {
1615 struct elfNN_ia64_link_hash_entry *ret;
1616 ret = (struct elfNN_ia64_link_hash_entry *) entry;
1617
1618 /* Allocate the structure if it has not already been allocated by a
1619 subclass. */
1620 if (!ret)
1621 ret = bfd_hash_allocate (table, sizeof (*ret));
1622
1623 if (!ret)
1624 return 0;
1625
1626 /* Call the allocation method of the superclass. */
1627 ret = ((struct elfNN_ia64_link_hash_entry *)
1628 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1629 table, string));
1630
1631 ret->info = NULL;
1632 return (struct bfd_hash_entry *) ret;
1633 }
1634
1635 static void
1636 elfNN_ia64_hash_copy_indirect (bed, xdir, xind)
1637 const struct elf_backend_data *bed ATTRIBUTE_UNUSED;
1638 struct elf_link_hash_entry *xdir, *xind;
1639 {
1640 struct elfNN_ia64_link_hash_entry *dir, *ind;
1641
1642 dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1643 ind = (struct elfNN_ia64_link_hash_entry *) xind;
1644
1645 /* Copy down any references that we may have already seen to the
1646 symbol which just became indirect. */
1647
1648 dir->root.ref_dynamic |= ind->root.ref_dynamic;
1649 dir->root.ref_regular |= ind->root.ref_regular;
1650 dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1651 dir->root.needs_plt |= ind->root.needs_plt;
1652
1653 if (ind->root.root.type != bfd_link_hash_indirect)
1654 return;
1655
1656 /* Copy over the got and plt data. This would have been done
1657 by check_relocs. */
1658
1659 if (dir->info == NULL)
1660 {
1661 struct elfNN_ia64_dyn_sym_info *dyn_i;
1662
1663 dir->info = dyn_i = ind->info;
1664 ind->info = NULL;
1665
1666 /* Fix up the dyn_sym_info pointers to the global symbol. */
1667 for (; dyn_i; dyn_i = dyn_i->next)
1668 dyn_i->h = &dir->root;
1669 }
1670 BFD_ASSERT (ind->info == NULL);
1671
1672 /* Copy over the dynindx. */
1673
1674 if (dir->root.dynindx == -1)
1675 {
1676 dir->root.dynindx = ind->root.dynindx;
1677 dir->root.dynstr_index = ind->root.dynstr_index;
1678 ind->root.dynindx = -1;
1679 ind->root.dynstr_index = 0;
1680 }
1681 BFD_ASSERT (ind->root.dynindx == -1);
1682 }
1683
1684 static void
1685 elfNN_ia64_hash_hide_symbol (info, xh, force_local)
1686 struct bfd_link_info *info;
1687 struct elf_link_hash_entry *xh;
1688 bfd_boolean force_local;
1689 {
1690 struct elfNN_ia64_link_hash_entry *h;
1691 struct elfNN_ia64_dyn_sym_info *dyn_i;
1692
1693 h = (struct elfNN_ia64_link_hash_entry *)xh;
1694
1695 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1696
1697 for (dyn_i = h->info; dyn_i; dyn_i = dyn_i->next)
1698 {
1699 dyn_i->want_plt2 = 0;
1700 dyn_i->want_plt = 0;
1701 }
1702 }
1703
1704 /* Compute a hash of a local hash entry. */
1705
1706 static hashval_t
1707 elfNN_ia64_local_htab_hash (ptr)
1708 const void *ptr;
1709 {
1710 struct elfNN_ia64_local_hash_entry *entry
1711 = (struct elfNN_ia64_local_hash_entry *) ptr;
1712
1713 return (((entry->id & 0xff) << 24) | ((entry->id & 0xff00) << 8))
1714 ^ entry->r_sym ^ (entry->id >> 16);
1715 }
1716
1717 /* Compare local hash entries. */
1718
1719 static int
1720 elfNN_ia64_local_htab_eq (ptr1, ptr2)
1721 const void *ptr1, *ptr2;
1722 {
1723 struct elfNN_ia64_local_hash_entry *entry1
1724 = (struct elfNN_ia64_local_hash_entry *) ptr1;
1725 struct elfNN_ia64_local_hash_entry *entry2
1726 = (struct elfNN_ia64_local_hash_entry *) ptr2;
1727
1728 return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1729 }
1730
1731 /* Create the derived linker hash table. The IA-64 ELF port uses this
1732 derived hash table to keep information specific to the IA-64 ElF
1733 linker (without using static variables). */
1734
1735 static struct bfd_link_hash_table*
1736 elfNN_ia64_hash_table_create (abfd)
1737 bfd *abfd;
1738 {
1739 struct elfNN_ia64_link_hash_table *ret;
1740
1741 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1742 if (!ret)
1743 return 0;
1744
1745 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1746 elfNN_ia64_new_elf_hash_entry))
1747 {
1748 free (ret);
1749 return 0;
1750 }
1751
1752 ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1753 elfNN_ia64_local_htab_eq, NULL);
1754 ret->loc_hash_memory = objalloc_create ();
1755 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1756 {
1757 free (ret);
1758 return 0;
1759 }
1760
1761 return &ret->root.root;
1762 }
1763
1764 /* Destroy IA-64 linker hash table. */
1765
1766 static void
1767 elfNN_ia64_hash_table_free (hash)
1768 struct bfd_link_hash_table *hash;
1769 {
1770 struct elfNN_ia64_link_hash_table *ia64_info
1771 = (struct elfNN_ia64_link_hash_table *) hash;
1772 if (ia64_info->loc_hash_table)
1773 htab_delete (ia64_info->loc_hash_table);
1774 if (ia64_info->loc_hash_memory)
1775 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1776 _bfd_generic_link_hash_table_free (hash);
1777 }
1778
1779 /* Traverse both local and global hash tables. */
1780
1781 struct elfNN_ia64_dyn_sym_traverse_data
1782 {
1783 bfd_boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
1784 PTR data;
1785 };
1786
1787 static bfd_boolean
1788 elfNN_ia64_global_dyn_sym_thunk (xentry, xdata)
1789 struct bfd_hash_entry *xentry;
1790 PTR xdata;
1791 {
1792 struct elfNN_ia64_link_hash_entry *entry
1793 = (struct elfNN_ia64_link_hash_entry *) xentry;
1794 struct elfNN_ia64_dyn_sym_traverse_data *data
1795 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1796 struct elfNN_ia64_dyn_sym_info *dyn_i;
1797
1798 if (entry->root.root.type == bfd_link_hash_warning)
1799 entry = (struct elfNN_ia64_link_hash_entry *) entry->root.root.u.i.link;
1800
1801 for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
1802 if (! (*data->func) (dyn_i, data->data))
1803 return FALSE;
1804 return TRUE;
1805 }
1806
1807 static bfd_boolean
1808 elfNN_ia64_local_dyn_sym_thunk (slot, xdata)
1809 void **slot;
1810 PTR xdata;
1811 {
1812 struct elfNN_ia64_local_hash_entry *entry
1813 = (struct elfNN_ia64_local_hash_entry *) *slot;
1814 struct elfNN_ia64_dyn_sym_traverse_data *data
1815 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1816 struct elfNN_ia64_dyn_sym_info *dyn_i;
1817
1818 for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
1819 if (! (*data->func) (dyn_i, data->data))
1820 return 0;
1821 return 1;
1822 }
1823
1824 static void
1825 elfNN_ia64_dyn_sym_traverse (ia64_info, func, data)
1826 struct elfNN_ia64_link_hash_table *ia64_info;
1827 bfd_boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
1828 PTR data;
1829 {
1830 struct elfNN_ia64_dyn_sym_traverse_data xdata;
1831
1832 xdata.func = func;
1833 xdata.data = data;
1834
1835 elf_link_hash_traverse (&ia64_info->root,
1836 elfNN_ia64_global_dyn_sym_thunk, &xdata);
1837 htab_traverse (ia64_info->loc_hash_table,
1838 elfNN_ia64_local_dyn_sym_thunk, &xdata);
1839 }
1840 \f
1841 static bfd_boolean
1842 elfNN_ia64_create_dynamic_sections (abfd, info)
1843 bfd *abfd;
1844 struct bfd_link_info *info;
1845 {
1846 struct elfNN_ia64_link_hash_table *ia64_info;
1847 asection *s;
1848
1849 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1850 return FALSE;
1851
1852 ia64_info = elfNN_ia64_hash_table (info);
1853
1854 ia64_info->plt_sec = bfd_get_section_by_name (abfd, ".plt");
1855 ia64_info->got_sec = bfd_get_section_by_name (abfd, ".got");
1856
1857 {
1858 flagword flags = bfd_get_section_flags (abfd, ia64_info->got_sec);
1859 bfd_set_section_flags (abfd, ia64_info->got_sec, SEC_SMALL_DATA | flags);
1860 /* The .got section is always aligned at 8 bytes. */
1861 bfd_set_section_alignment (abfd, ia64_info->got_sec, 3);
1862 }
1863
1864 if (!get_pltoff (abfd, info, ia64_info))
1865 return FALSE;
1866
1867 s = bfd_make_section(abfd, ".rela.IA_64.pltoff");
1868 if (s == NULL
1869 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1870 | SEC_HAS_CONTENTS
1871 | SEC_IN_MEMORY
1872 | SEC_LINKER_CREATED
1873 | SEC_READONLY))
1874 || !bfd_set_section_alignment (abfd, s, 3))
1875 return FALSE;
1876 ia64_info->rel_pltoff_sec = s;
1877
1878 s = bfd_make_section(abfd, ".rela.got");
1879 if (s == NULL
1880 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1881 | SEC_HAS_CONTENTS
1882 | SEC_IN_MEMORY
1883 | SEC_LINKER_CREATED
1884 | SEC_READONLY))
1885 || !bfd_set_section_alignment (abfd, s, 3))
1886 return FALSE;
1887 ia64_info->rel_got_sec = s;
1888
1889 return TRUE;
1890 }
1891
1892 /* Find and/or create a hash entry for local symbol. */
1893 static struct elfNN_ia64_local_hash_entry *
1894 get_local_sym_hash (ia64_info, abfd, rel, create)
1895 struct elfNN_ia64_link_hash_table *ia64_info;
1896 bfd *abfd;
1897 const Elf_Internal_Rela *rel;
1898 bfd_boolean create;
1899 {
1900 struct elfNN_ia64_local_hash_entry e, *ret;
1901 asection *sec = abfd->sections;
1902 hashval_t h = (((sec->id & 0xff) << 24) | ((sec->id & 0xff00) << 8))
1903 ^ ELFNN_R_SYM (rel->r_info) ^ (sec->id >> 16);
1904 void **slot;
1905
1906 e.id = sec->id;
1907 e.r_sym = ELFNN_R_SYM (rel->r_info);
1908 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
1909 create ? INSERT : NO_INSERT);
1910
1911 if (!slot)
1912 return NULL;
1913
1914 if (*slot)
1915 return (struct elfNN_ia64_local_hash_entry *) *slot;
1916
1917 ret = (struct elfNN_ia64_local_hash_entry *)
1918 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
1919 sizeof (struct elfNN_ia64_local_hash_entry));
1920 if (ret)
1921 {
1922 memset (ret, 0, sizeof (*ret));
1923 ret->id = sec->id;
1924 ret->r_sym = ELFNN_R_SYM (rel->r_info);
1925 *slot = ret;
1926 }
1927 return ret;
1928 }
1929
1930 /* Find and/or create a descriptor for dynamic symbol info. This will
1931 vary based on global or local symbol, and the addend to the reloc. */
1932
1933 static struct elfNN_ia64_dyn_sym_info *
1934 get_dyn_sym_info (ia64_info, h, abfd, rel, create)
1935 struct elfNN_ia64_link_hash_table *ia64_info;
1936 struct elf_link_hash_entry *h;
1937 bfd *abfd;
1938 const Elf_Internal_Rela *rel;
1939 bfd_boolean create;
1940 {
1941 struct elfNN_ia64_dyn_sym_info **pp;
1942 struct elfNN_ia64_dyn_sym_info *dyn_i;
1943 bfd_vma addend = rel ? rel->r_addend : 0;
1944
1945 if (h)
1946 pp = &((struct elfNN_ia64_link_hash_entry *)h)->info;
1947 else
1948 {
1949 struct elfNN_ia64_local_hash_entry *loc_h;
1950
1951 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1952 if (!loc_h)
1953 {
1954 BFD_ASSERT (!create);
1955 return NULL;
1956 }
1957
1958 pp = &loc_h->info;
1959 }
1960
1961 for (dyn_i = *pp; dyn_i && dyn_i->addend != addend; dyn_i = *pp)
1962 pp = &dyn_i->next;
1963
1964 if (dyn_i == NULL && create)
1965 {
1966 dyn_i = ((struct elfNN_ia64_dyn_sym_info *)
1967 bfd_zalloc (abfd, (bfd_size_type) sizeof *dyn_i));
1968 *pp = dyn_i;
1969 dyn_i->addend = addend;
1970 }
1971
1972 return dyn_i;
1973 }
1974
1975 static asection *
1976 get_got (abfd, info, ia64_info)
1977 bfd *abfd;
1978 struct bfd_link_info *info;
1979 struct elfNN_ia64_link_hash_table *ia64_info;
1980 {
1981 asection *got;
1982 bfd *dynobj;
1983
1984 got = ia64_info->got_sec;
1985 if (!got)
1986 {
1987 flagword flags;
1988
1989 dynobj = ia64_info->root.dynobj;
1990 if (!dynobj)
1991 ia64_info->root.dynobj = dynobj = abfd;
1992 if (!_bfd_elf_create_got_section (dynobj, info))
1993 return 0;
1994
1995 got = bfd_get_section_by_name (dynobj, ".got");
1996 BFD_ASSERT (got);
1997 ia64_info->got_sec = got;
1998
1999 /* The .got section is always aligned at 8 bytes. */
2000 if (!bfd_set_section_alignment (abfd, got, 3))
2001 return 0;
2002
2003 flags = bfd_get_section_flags (abfd, got);
2004 bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags);
2005 }
2006
2007 return got;
2008 }
2009
2010 /* Create function descriptor section (.opd). This section is called .opd
2011 because it contains "official procedure descriptors". The "official"
2012 refers to the fact that these descriptors are used when taking the address
2013 of a procedure, thus ensuring a unique address for each procedure. */
2014
2015 static asection *
2016 get_fptr (abfd, info, ia64_info)
2017 bfd *abfd;
2018 struct bfd_link_info *info;
2019 struct elfNN_ia64_link_hash_table *ia64_info;
2020 {
2021 asection *fptr;
2022 bfd *dynobj;
2023
2024 fptr = ia64_info->fptr_sec;
2025 if (!fptr)
2026 {
2027 dynobj = ia64_info->root.dynobj;
2028 if (!dynobj)
2029 ia64_info->root.dynobj = dynobj = abfd;
2030
2031 fptr = bfd_make_section (dynobj, ".opd");
2032 if (!fptr
2033 || !bfd_set_section_flags (dynobj, fptr,
2034 (SEC_ALLOC
2035 | SEC_LOAD
2036 | SEC_HAS_CONTENTS
2037 | SEC_IN_MEMORY
2038 | (info->pie ? 0 : SEC_READONLY)
2039 | SEC_LINKER_CREATED))
2040 || !bfd_set_section_alignment (abfd, fptr, 4))
2041 {
2042 BFD_ASSERT (0);
2043 return NULL;
2044 }
2045
2046 ia64_info->fptr_sec = fptr;
2047
2048 if (info->pie)
2049 {
2050 asection *fptr_rel;
2051 fptr_rel = bfd_make_section(dynobj, ".rela.opd");
2052 if (fptr_rel == NULL
2053 || !bfd_set_section_flags (dynobj, fptr_rel,
2054 (SEC_ALLOC | SEC_LOAD
2055 | SEC_HAS_CONTENTS
2056 | SEC_IN_MEMORY
2057 | SEC_LINKER_CREATED
2058 | SEC_READONLY))
2059 || !bfd_set_section_alignment (abfd, fptr_rel, 3))
2060 {
2061 BFD_ASSERT (0);
2062 return NULL;
2063 }
2064
2065 ia64_info->rel_fptr_sec = fptr_rel;
2066 }
2067 }
2068
2069 return fptr;
2070 }
2071
2072 static asection *
2073 get_pltoff (abfd, info, ia64_info)
2074 bfd *abfd;
2075 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2076 struct elfNN_ia64_link_hash_table *ia64_info;
2077 {
2078 asection *pltoff;
2079 bfd *dynobj;
2080
2081 pltoff = ia64_info->pltoff_sec;
2082 if (!pltoff)
2083 {
2084 dynobj = ia64_info->root.dynobj;
2085 if (!dynobj)
2086 ia64_info->root.dynobj = dynobj = abfd;
2087
2088 pltoff = bfd_make_section (dynobj, ELF_STRING_ia64_pltoff);
2089 if (!pltoff
2090 || !bfd_set_section_flags (dynobj, pltoff,
2091 (SEC_ALLOC
2092 | SEC_LOAD
2093 | SEC_HAS_CONTENTS
2094 | SEC_IN_MEMORY
2095 | SEC_SMALL_DATA
2096 | SEC_LINKER_CREATED))
2097 || !bfd_set_section_alignment (abfd, pltoff, 4))
2098 {
2099 BFD_ASSERT (0);
2100 return NULL;
2101 }
2102
2103 ia64_info->pltoff_sec = pltoff;
2104 }
2105
2106 return pltoff;
2107 }
2108
2109 static asection *
2110 get_reloc_section (abfd, ia64_info, sec, create)
2111 bfd *abfd;
2112 struct elfNN_ia64_link_hash_table *ia64_info;
2113 asection *sec;
2114 bfd_boolean create;
2115 {
2116 const char *srel_name;
2117 asection *srel;
2118 bfd *dynobj;
2119
2120 srel_name = (bfd_elf_string_from_elf_section
2121 (abfd, elf_elfheader(abfd)->e_shstrndx,
2122 elf_section_data(sec)->rel_hdr.sh_name));
2123 if (srel_name == NULL)
2124 return NULL;
2125
2126 BFD_ASSERT ((strncmp (srel_name, ".rela", 5) == 0
2127 && strcmp (bfd_get_section_name (abfd, sec),
2128 srel_name+5) == 0)
2129 || (strncmp (srel_name, ".rel", 4) == 0
2130 && strcmp (bfd_get_section_name (abfd, sec),
2131 srel_name+4) == 0));
2132
2133 dynobj = ia64_info->root.dynobj;
2134 if (!dynobj)
2135 ia64_info->root.dynobj = dynobj = abfd;
2136
2137 srel = bfd_get_section_by_name (dynobj, srel_name);
2138 if (srel == NULL && create)
2139 {
2140 srel = bfd_make_section (dynobj, srel_name);
2141 if (srel == NULL
2142 || !bfd_set_section_flags (dynobj, srel,
2143 (SEC_ALLOC
2144 | SEC_LOAD
2145 | SEC_HAS_CONTENTS
2146 | SEC_IN_MEMORY
2147 | SEC_LINKER_CREATED
2148 | SEC_READONLY))
2149 || !bfd_set_section_alignment (dynobj, srel, 3))
2150 return NULL;
2151 }
2152
2153 return srel;
2154 }
2155
2156 static bfd_boolean
2157 count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2158 asection *srel, int type, bfd_boolean reltext)
2159 {
2160 struct elfNN_ia64_dyn_reloc_entry *rent;
2161
2162 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2163 if (rent->srel == srel && rent->type == type)
2164 break;
2165
2166 if (!rent)
2167 {
2168 rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2169 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2170 if (!rent)
2171 return FALSE;
2172
2173 rent->next = dyn_i->reloc_entries;
2174 rent->srel = srel;
2175 rent->type = type;
2176 rent->count = 0;
2177 dyn_i->reloc_entries = rent;
2178 }
2179 rent->reltext = reltext;
2180 rent->count++;
2181
2182 return TRUE;
2183 }
2184
2185 static bfd_boolean
2186 elfNN_ia64_check_relocs (abfd, info, sec, relocs)
2187 bfd *abfd;
2188 struct bfd_link_info *info;
2189 asection *sec;
2190 const Elf_Internal_Rela *relocs;
2191 {
2192 struct elfNN_ia64_link_hash_table *ia64_info;
2193 const Elf_Internal_Rela *relend;
2194 Elf_Internal_Shdr *symtab_hdr;
2195 const Elf_Internal_Rela *rel;
2196 asection *got, *fptr, *srel, *pltoff;
2197
2198 if (info->relocatable)
2199 return TRUE;
2200
2201 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2202 ia64_info = elfNN_ia64_hash_table (info);
2203
2204 got = fptr = srel = pltoff = NULL;
2205
2206 relend = relocs + sec->reloc_count;
2207 for (rel = relocs; rel < relend; ++rel)
2208 {
2209 enum {
2210 NEED_GOT = 1,
2211 NEED_GOTX = 2,
2212 NEED_FPTR = 4,
2213 NEED_PLTOFF = 8,
2214 NEED_MIN_PLT = 16,
2215 NEED_FULL_PLT = 32,
2216 NEED_DYNREL = 64,
2217 NEED_LTOFF_FPTR = 128,
2218 NEED_TPREL = 256,
2219 NEED_DTPMOD = 512,
2220 NEED_DTPREL = 1024
2221 };
2222
2223 struct elf_link_hash_entry *h = NULL;
2224 unsigned long r_symndx = ELFNN_R_SYM (rel->r_info);
2225 struct elfNN_ia64_dyn_sym_info *dyn_i;
2226 int need_entry;
2227 bfd_boolean maybe_dynamic;
2228 int dynrel_type = R_IA64_NONE;
2229
2230 if (r_symndx >= symtab_hdr->sh_info)
2231 {
2232 /* We're dealing with a global symbol -- find its hash entry
2233 and mark it as being referenced. */
2234 long indx = r_symndx - symtab_hdr->sh_info;
2235 h = elf_sym_hashes (abfd)[indx];
2236 while (h->root.type == bfd_link_hash_indirect
2237 || h->root.type == bfd_link_hash_warning)
2238 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2239
2240 h->ref_regular = 1;
2241 }
2242
2243 /* We can only get preliminary data on whether a symbol is
2244 locally or externally defined, as not all of the input files
2245 have yet been processed. Do something with what we know, as
2246 this may help reduce memory usage and processing time later. */
2247 maybe_dynamic = FALSE;
2248 if (h && ((!info->executable
2249 && (!info->symbolic
2250 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2251 || !h->def_regular
2252 || h->root.type == bfd_link_hash_defweak))
2253 maybe_dynamic = TRUE;
2254
2255 need_entry = 0;
2256 switch (ELFNN_R_TYPE (rel->r_info))
2257 {
2258 case R_IA64_TPREL64MSB:
2259 case R_IA64_TPREL64LSB:
2260 if (info->shared || maybe_dynamic)
2261 need_entry = NEED_DYNREL;
2262 dynrel_type = R_IA64_TPREL64LSB;
2263 if (info->shared)
2264 info->flags |= DF_STATIC_TLS;
2265 break;
2266
2267 case R_IA64_LTOFF_TPREL22:
2268 need_entry = NEED_TPREL;
2269 if (info->shared)
2270 info->flags |= DF_STATIC_TLS;
2271 break;
2272
2273 case R_IA64_DTPREL64MSB:
2274 case R_IA64_DTPREL64LSB:
2275 if (info->shared || maybe_dynamic)
2276 need_entry = NEED_DYNREL;
2277 dynrel_type = R_IA64_DTPREL64LSB;
2278 break;
2279
2280 case R_IA64_LTOFF_DTPREL22:
2281 need_entry = NEED_DTPREL;
2282 break;
2283
2284 case R_IA64_DTPMOD64MSB:
2285 case R_IA64_DTPMOD64LSB:
2286 if (info->shared || maybe_dynamic)
2287 need_entry = NEED_DYNREL;
2288 dynrel_type = R_IA64_DTPMOD64LSB;
2289 break;
2290
2291 case R_IA64_LTOFF_DTPMOD22:
2292 need_entry = NEED_DTPMOD;
2293 break;
2294
2295 case R_IA64_LTOFF_FPTR22:
2296 case R_IA64_LTOFF_FPTR64I:
2297 case R_IA64_LTOFF_FPTR32MSB:
2298 case R_IA64_LTOFF_FPTR32LSB:
2299 case R_IA64_LTOFF_FPTR64MSB:
2300 case R_IA64_LTOFF_FPTR64LSB:
2301 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2302 break;
2303
2304 case R_IA64_FPTR64I:
2305 case R_IA64_FPTR32MSB:
2306 case R_IA64_FPTR32LSB:
2307 case R_IA64_FPTR64MSB:
2308 case R_IA64_FPTR64LSB:
2309 if (info->shared || h)
2310 need_entry = NEED_FPTR | NEED_DYNREL;
2311 else
2312 need_entry = NEED_FPTR;
2313 dynrel_type = R_IA64_FPTR64LSB;
2314 break;
2315
2316 case R_IA64_LTOFF22:
2317 case R_IA64_LTOFF64I:
2318 need_entry = NEED_GOT;
2319 break;
2320
2321 case R_IA64_LTOFF22X:
2322 need_entry = NEED_GOTX;
2323 break;
2324
2325 case R_IA64_PLTOFF22:
2326 case R_IA64_PLTOFF64I:
2327 case R_IA64_PLTOFF64MSB:
2328 case R_IA64_PLTOFF64LSB:
2329 need_entry = NEED_PLTOFF;
2330 if (h)
2331 {
2332 if (maybe_dynamic)
2333 need_entry |= NEED_MIN_PLT;
2334 }
2335 else
2336 {
2337 (*info->callbacks->warning)
2338 (info, _("@pltoff reloc against local symbol"), 0,
2339 abfd, 0, (bfd_vma) 0);
2340 }
2341 break;
2342
2343 case R_IA64_PCREL21B:
2344 case R_IA64_PCREL60B:
2345 /* Depending on where this symbol is defined, we may or may not
2346 need a full plt entry. Only skip if we know we'll not need
2347 the entry -- static or symbolic, and the symbol definition
2348 has already been seen. */
2349 if (maybe_dynamic && rel->r_addend == 0)
2350 need_entry = NEED_FULL_PLT;
2351 break;
2352
2353 case R_IA64_IMM14:
2354 case R_IA64_IMM22:
2355 case R_IA64_IMM64:
2356 case R_IA64_DIR32MSB:
2357 case R_IA64_DIR32LSB:
2358 case R_IA64_DIR64MSB:
2359 case R_IA64_DIR64LSB:
2360 /* Shared objects will always need at least a REL relocation. */
2361 if (info->shared || maybe_dynamic)
2362 need_entry = NEED_DYNREL;
2363 dynrel_type = R_IA64_DIR64LSB;
2364 break;
2365
2366 case R_IA64_IPLTMSB:
2367 case R_IA64_IPLTLSB:
2368 /* Shared objects will always need at least a REL relocation. */
2369 if (info->shared || maybe_dynamic)
2370 need_entry = NEED_DYNREL;
2371 dynrel_type = R_IA64_IPLTLSB;
2372 break;
2373
2374 case R_IA64_PCREL22:
2375 case R_IA64_PCREL64I:
2376 case R_IA64_PCREL32MSB:
2377 case R_IA64_PCREL32LSB:
2378 case R_IA64_PCREL64MSB:
2379 case R_IA64_PCREL64LSB:
2380 if (maybe_dynamic)
2381 need_entry = NEED_DYNREL;
2382 dynrel_type = R_IA64_PCREL64LSB;
2383 break;
2384 }
2385
2386 if (!need_entry)
2387 continue;
2388
2389 if ((need_entry & NEED_FPTR) != 0
2390 && rel->r_addend)
2391 {
2392 (*info->callbacks->warning)
2393 (info, _("non-zero addend in @fptr reloc"), 0,
2394 abfd, 0, (bfd_vma) 0);
2395 }
2396
2397 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE);
2398
2399 /* Record whether or not this is a local symbol. */
2400 dyn_i->h = h;
2401
2402 /* Create what's needed. */
2403 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2404 | NEED_DTPMOD | NEED_DTPREL))
2405 {
2406 if (!got)
2407 {
2408 got = get_got (abfd, info, ia64_info);
2409 if (!got)
2410 return FALSE;
2411 }
2412 if (need_entry & NEED_GOT)
2413 dyn_i->want_got = 1;
2414 if (need_entry & NEED_GOTX)
2415 dyn_i->want_gotx = 1;
2416 if (need_entry & NEED_TPREL)
2417 dyn_i->want_tprel = 1;
2418 if (need_entry & NEED_DTPMOD)
2419 dyn_i->want_dtpmod = 1;
2420 if (need_entry & NEED_DTPREL)
2421 dyn_i->want_dtprel = 1;
2422 }
2423 if (need_entry & NEED_FPTR)
2424 {
2425 if (!fptr)
2426 {
2427 fptr = get_fptr (abfd, info, ia64_info);
2428 if (!fptr)
2429 return FALSE;
2430 }
2431
2432 /* FPTRs for shared libraries are allocated by the dynamic
2433 linker. Make sure this local symbol will appear in the
2434 dynamic symbol table. */
2435 if (!h && info->shared)
2436 {
2437 if (! (bfd_elf_link_record_local_dynamic_symbol
2438 (info, abfd, (long) r_symndx)))
2439 return FALSE;
2440 }
2441
2442 dyn_i->want_fptr = 1;
2443 }
2444 if (need_entry & NEED_LTOFF_FPTR)
2445 dyn_i->want_ltoff_fptr = 1;
2446 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2447 {
2448 if (!ia64_info->root.dynobj)
2449 ia64_info->root.dynobj = abfd;
2450 h->needs_plt = 1;
2451 dyn_i->want_plt = 1;
2452 }
2453 if (need_entry & NEED_FULL_PLT)
2454 dyn_i->want_plt2 = 1;
2455 if (need_entry & NEED_PLTOFF)
2456 {
2457 /* This is needed here, in case @pltoff is used in a non-shared
2458 link. */
2459 if (!pltoff)
2460 {
2461 pltoff = get_pltoff (abfd, info, ia64_info);
2462 if (!pltoff)
2463 return FALSE;
2464 }
2465
2466 dyn_i->want_pltoff = 1;
2467 }
2468 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2469 {
2470 if (!srel)
2471 {
2472 srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2473 if (!srel)
2474 return FALSE;
2475 }
2476 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2477 (sec->flags & SEC_READONLY) != 0))
2478 return FALSE;
2479 }
2480 }
2481
2482 return TRUE;
2483 }
2484
2485 /* For cleanliness, and potentially faster dynamic loading, allocate
2486 external GOT entries first. */
2487
2488 static bfd_boolean
2489 allocate_global_data_got (dyn_i, data)
2490 struct elfNN_ia64_dyn_sym_info *dyn_i;
2491 PTR data;
2492 {
2493 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2494
2495 if ((dyn_i->want_got || dyn_i->want_gotx)
2496 && ! dyn_i->want_fptr
2497 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2498 {
2499 dyn_i->got_offset = x->ofs;
2500 x->ofs += 8;
2501 }
2502 if (dyn_i->want_tprel)
2503 {
2504 dyn_i->tprel_offset = x->ofs;
2505 x->ofs += 8;
2506 }
2507 if (dyn_i->want_dtpmod)
2508 {
2509 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2510 {
2511 dyn_i->dtpmod_offset = x->ofs;
2512 x->ofs += 8;
2513 }
2514 else
2515 {
2516 struct elfNN_ia64_link_hash_table *ia64_info;
2517
2518 ia64_info = elfNN_ia64_hash_table (x->info);
2519 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2520 {
2521 ia64_info->self_dtpmod_offset = x->ofs;
2522 x->ofs += 8;
2523 }
2524 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2525 }
2526 }
2527 if (dyn_i->want_dtprel)
2528 {
2529 dyn_i->dtprel_offset = x->ofs;
2530 x->ofs += 8;
2531 }
2532 return TRUE;
2533 }
2534
2535 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2536
2537 static bfd_boolean
2538 allocate_global_fptr_got (dyn_i, data)
2539 struct elfNN_ia64_dyn_sym_info *dyn_i;
2540 PTR data;
2541 {
2542 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2543
2544 if (dyn_i->want_got
2545 && dyn_i->want_fptr
2546 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTR64LSB))
2547 {
2548 dyn_i->got_offset = x->ofs;
2549 x->ofs += 8;
2550 }
2551 return TRUE;
2552 }
2553
2554 /* Lastly, allocate all the GOT entries for local data. */
2555
2556 static bfd_boolean
2557 allocate_local_got (dyn_i, data)
2558 struct elfNN_ia64_dyn_sym_info *dyn_i;
2559 PTR data;
2560 {
2561 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2562
2563 if ((dyn_i->want_got || dyn_i->want_gotx)
2564 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2565 {
2566 dyn_i->got_offset = x->ofs;
2567 x->ofs += 8;
2568 }
2569 return TRUE;
2570 }
2571
2572 /* Search for the index of a global symbol in it's defining object file. */
2573
2574 static long
2575 global_sym_index (h)
2576 struct elf_link_hash_entry *h;
2577 {
2578 struct elf_link_hash_entry **p;
2579 bfd *obj;
2580
2581 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2582 || h->root.type == bfd_link_hash_defweak);
2583
2584 obj = h->root.u.def.section->owner;
2585 for (p = elf_sym_hashes (obj); *p != h; ++p)
2586 continue;
2587
2588 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2589 }
2590
2591 /* Allocate function descriptors. We can do these for every function
2592 in a main executable that is not exported. */
2593
2594 static bfd_boolean
2595 allocate_fptr (dyn_i, data)
2596 struct elfNN_ia64_dyn_sym_info *dyn_i;
2597 PTR data;
2598 {
2599 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2600
2601 if (dyn_i->want_fptr)
2602 {
2603 struct elf_link_hash_entry *h = dyn_i->h;
2604
2605 if (h)
2606 while (h->root.type == bfd_link_hash_indirect
2607 || h->root.type == bfd_link_hash_warning)
2608 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2609
2610 if (!x->info->executable
2611 && (!h
2612 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2613 || h->root.type != bfd_link_hash_undefweak))
2614 {
2615 if (h && h->dynindx == -1)
2616 {
2617 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2618 || (h->root.type == bfd_link_hash_defweak));
2619
2620 if (!bfd_elf_link_record_local_dynamic_symbol
2621 (x->info, h->root.u.def.section->owner,
2622 global_sym_index (h)))
2623 return FALSE;
2624 }
2625
2626 dyn_i->want_fptr = 0;
2627 }
2628 else if (h == NULL || h->dynindx == -1)
2629 {
2630 dyn_i->fptr_offset = x->ofs;
2631 x->ofs += 16;
2632 }
2633 else
2634 dyn_i->want_fptr = 0;
2635 }
2636 return TRUE;
2637 }
2638
2639 /* Allocate all the minimal PLT entries. */
2640
2641 static bfd_boolean
2642 allocate_plt_entries (dyn_i, data)
2643 struct elfNN_ia64_dyn_sym_info *dyn_i;
2644 PTR data;
2645 {
2646 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2647
2648 if (dyn_i->want_plt)
2649 {
2650 struct elf_link_hash_entry *h = dyn_i->h;
2651
2652 if (h)
2653 while (h->root.type == bfd_link_hash_indirect
2654 || h->root.type == bfd_link_hash_warning)
2655 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2656
2657 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2658 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2659 {
2660 bfd_size_type offset = x->ofs;
2661 if (offset == 0)
2662 offset = PLT_HEADER_SIZE;
2663 dyn_i->plt_offset = offset;
2664 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2665
2666 dyn_i->want_pltoff = 1;
2667 }
2668 else
2669 {
2670 dyn_i->want_plt = 0;
2671 dyn_i->want_plt2 = 0;
2672 }
2673 }
2674 return TRUE;
2675 }
2676
2677 /* Allocate all the full PLT entries. */
2678
2679 static bfd_boolean
2680 allocate_plt2_entries (dyn_i, data)
2681 struct elfNN_ia64_dyn_sym_info *dyn_i;
2682 PTR data;
2683 {
2684 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2685
2686 if (dyn_i->want_plt2)
2687 {
2688 struct elf_link_hash_entry *h = dyn_i->h;
2689 bfd_size_type ofs = x->ofs;
2690
2691 dyn_i->plt2_offset = ofs;
2692 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2693
2694 while (h->root.type == bfd_link_hash_indirect
2695 || h->root.type == bfd_link_hash_warning)
2696 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2697 dyn_i->h->plt.offset = ofs;
2698 }
2699 return TRUE;
2700 }
2701
2702 /* Allocate all the PLTOFF entries requested by relocations and
2703 plt entries. We can't share space with allocated FPTR entries,
2704 because the latter are not necessarily addressable by the GP.
2705 ??? Relaxation might be able to determine that they are. */
2706
2707 static bfd_boolean
2708 allocate_pltoff_entries (dyn_i, data)
2709 struct elfNN_ia64_dyn_sym_info *dyn_i;
2710 PTR data;
2711 {
2712 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2713
2714 if (dyn_i->want_pltoff)
2715 {
2716 dyn_i->pltoff_offset = x->ofs;
2717 x->ofs += 16;
2718 }
2719 return TRUE;
2720 }
2721
2722 /* Allocate dynamic relocations for those symbols that turned out
2723 to be dynamic. */
2724
2725 static bfd_boolean
2726 allocate_dynrel_entries (dyn_i, data)
2727 struct elfNN_ia64_dyn_sym_info *dyn_i;
2728 PTR data;
2729 {
2730 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2731 struct elfNN_ia64_link_hash_table *ia64_info;
2732 struct elfNN_ia64_dyn_reloc_entry *rent;
2733 bfd_boolean dynamic_symbol, shared, resolved_zero;
2734
2735 ia64_info = elfNN_ia64_hash_table (x->info);
2736
2737 /* Note that this can't be used in relation to FPTR relocs below. */
2738 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2739
2740 shared = x->info->shared;
2741 resolved_zero = (dyn_i->h
2742 && ELF_ST_VISIBILITY (dyn_i->h->other)
2743 && dyn_i->h->root.type == bfd_link_hash_undefweak);
2744
2745 /* Take care of the normal data relocations. */
2746
2747 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2748 {
2749 int count = rent->count;
2750
2751 switch (rent->type)
2752 {
2753 case R_IA64_FPTR64LSB:
2754 /* Allocate one iff !want_fptr and not PIE, which by this point
2755 will be true only if we're actually allocating one statically
2756 in the main executable. Position independent executables
2757 need a relative reloc. */
2758 if (dyn_i->want_fptr && !x->info->pie)
2759 continue;
2760 break;
2761 case R_IA64_PCREL64LSB:
2762 if (!dynamic_symbol)
2763 continue;
2764 break;
2765 case R_IA64_DIR64LSB:
2766 if (!dynamic_symbol && !shared)
2767 continue;
2768 break;
2769 case R_IA64_IPLTLSB:
2770 if (!dynamic_symbol && !shared)
2771 continue;
2772 /* Use two REL relocations for IPLT relocations
2773 against local symbols. */
2774 if (!dynamic_symbol)
2775 count *= 2;
2776 break;
2777 case R_IA64_TPREL64LSB:
2778 case R_IA64_DTPREL64LSB:
2779 case R_IA64_DTPMOD64LSB:
2780 break;
2781 default:
2782 abort ();
2783 }
2784 if (rent->reltext)
2785 ia64_info->reltext = 1;
2786 rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2787 }
2788
2789 /* Take care of the GOT and PLT relocations. */
2790
2791 if ((!resolved_zero
2792 && (dynamic_symbol || shared)
2793 && (dyn_i->want_got || dyn_i->want_gotx))
2794 || (dyn_i->want_ltoff_fptr
2795 && dyn_i->h
2796 && dyn_i->h->dynindx != -1))
2797 {
2798 if (!dyn_i->want_ltoff_fptr
2799 || !x->info->pie
2800 || dyn_i->h == NULL
2801 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2802 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2803 }
2804 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2805 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2806 if (dynamic_symbol && dyn_i->want_dtpmod)
2807 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2808 if (dynamic_symbol && dyn_i->want_dtprel)
2809 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2810 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2811 {
2812 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2813 ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2814 }
2815
2816 if (!resolved_zero && dyn_i->want_pltoff)
2817 {
2818 bfd_size_type t = 0;
2819
2820 /* Dynamic symbols get one IPLT relocation. Local symbols in
2821 shared libraries get two REL relocations. Local symbols in
2822 main applications get nothing. */
2823 if (dynamic_symbol)
2824 t = sizeof (ElfNN_External_Rela);
2825 else if (shared)
2826 t = 2 * sizeof (ElfNN_External_Rela);
2827
2828 ia64_info->rel_pltoff_sec->size += t;
2829 }
2830
2831 return TRUE;
2832 }
2833
2834 static bfd_boolean
2835 elfNN_ia64_adjust_dynamic_symbol (info, h)
2836 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2837 struct elf_link_hash_entry *h;
2838 {
2839 /* ??? Undefined symbols with PLT entries should be re-defined
2840 to be the PLT entry. */
2841
2842 /* If this is a weak symbol, and there is a real definition, the
2843 processor independent code will have arranged for us to see the
2844 real definition first, and we can just use the same value. */
2845 if (h->u.weakdef != NULL)
2846 {
2847 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2848 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2849 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2850 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2851 return TRUE;
2852 }
2853
2854 /* If this is a reference to a symbol defined by a dynamic object which
2855 is not a function, we might allocate the symbol in our .dynbss section
2856 and allocate a COPY dynamic relocation.
2857
2858 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2859 of hackery. */
2860
2861 return TRUE;
2862 }
2863
2864 static bfd_boolean
2865 elfNN_ia64_size_dynamic_sections (output_bfd, info)
2866 bfd *output_bfd ATTRIBUTE_UNUSED;
2867 struct bfd_link_info *info;
2868 {
2869 struct elfNN_ia64_allocate_data data;
2870 struct elfNN_ia64_link_hash_table *ia64_info;
2871 asection *sec;
2872 bfd *dynobj;
2873 bfd_boolean relplt = FALSE;
2874
2875 dynobj = elf_hash_table(info)->dynobj;
2876 ia64_info = elfNN_ia64_hash_table (info);
2877 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
2878 BFD_ASSERT(dynobj != NULL);
2879 data.info = info;
2880
2881 /* Set the contents of the .interp section to the interpreter. */
2882 if (ia64_info->root.dynamic_sections_created
2883 && info->executable)
2884 {
2885 sec = bfd_get_section_by_name (dynobj, ".interp");
2886 BFD_ASSERT (sec != NULL);
2887 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
2888 sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
2889 }
2890
2891 /* Allocate the GOT entries. */
2892
2893 if (ia64_info->got_sec)
2894 {
2895 data.ofs = 0;
2896 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
2897 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
2898 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
2899 ia64_info->got_sec->size = data.ofs;
2900 }
2901
2902 /* Allocate the FPTR entries. */
2903
2904 if (ia64_info->fptr_sec)
2905 {
2906 data.ofs = 0;
2907 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
2908 ia64_info->fptr_sec->size = data.ofs;
2909 }
2910
2911 /* Now that we've seen all of the input files, we can decide which
2912 symbols need plt entries. Allocate the minimal PLT entries first.
2913 We do this even though dynamic_sections_created may be FALSE, because
2914 this has the side-effect of clearing want_plt and want_plt2. */
2915
2916 data.ofs = 0;
2917 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
2918
2919 ia64_info->minplt_entries = 0;
2920 if (data.ofs)
2921 {
2922 ia64_info->minplt_entries
2923 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
2924 }
2925
2926 /* Align the pointer for the plt2 entries. */
2927 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
2928
2929 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
2930 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
2931 {
2932 /* FIXME: we always reserve the memory for dynamic linker even if
2933 there are no PLT entries since dynamic linker may assume the
2934 reserved memory always exists. */
2935
2936 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
2937
2938 ia64_info->plt_sec->size = data.ofs;
2939
2940 /* If we've got a .plt, we need some extra memory for the dynamic
2941 linker. We stuff these in .got.plt. */
2942 sec = bfd_get_section_by_name (dynobj, ".got.plt");
2943 sec->size = 8 * PLT_RESERVED_WORDS;
2944 }
2945
2946 /* Allocate the PLTOFF entries. */
2947
2948 if (ia64_info->pltoff_sec)
2949 {
2950 data.ofs = 0;
2951 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
2952 ia64_info->pltoff_sec->size = data.ofs;
2953 }
2954
2955 if (ia64_info->root.dynamic_sections_created)
2956 {
2957 /* Allocate space for the dynamic relocations that turned out to be
2958 required. */
2959
2960 if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
2961 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2962 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
2963 }
2964
2965 /* We have now determined the sizes of the various dynamic sections.
2966 Allocate memory for them. */
2967 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2968 {
2969 bfd_boolean strip;
2970
2971 if (!(sec->flags & SEC_LINKER_CREATED))
2972 continue;
2973
2974 /* If we don't need this section, strip it from the output file.
2975 There were several sections primarily related to dynamic
2976 linking that must be create before the linker maps input
2977 sections to output sections. The linker does that before
2978 bfd_elf_size_dynamic_sections is called, and it is that
2979 function which decides whether anything needs to go into
2980 these sections. */
2981
2982 strip = (sec->size == 0);
2983
2984 if (sec == ia64_info->got_sec)
2985 strip = FALSE;
2986 else if (sec == ia64_info->rel_got_sec)
2987 {
2988 if (strip)
2989 ia64_info->rel_got_sec = NULL;
2990 else
2991 /* We use the reloc_count field as a counter if we need to
2992 copy relocs into the output file. */
2993 sec->reloc_count = 0;
2994 }
2995 else if (sec == ia64_info->fptr_sec)
2996 {
2997 if (strip)
2998 ia64_info->fptr_sec = NULL;
2999 }
3000 else if (sec == ia64_info->rel_fptr_sec)
3001 {
3002 if (strip)
3003 ia64_info->rel_fptr_sec = NULL;
3004 else
3005 /* We use the reloc_count field as a counter if we need to
3006 copy relocs into the output file. */
3007 sec->reloc_count = 0;
3008 }
3009 else if (sec == ia64_info->plt_sec)
3010 {
3011 if (strip)
3012 ia64_info->plt_sec = NULL;
3013 }
3014 else if (sec == ia64_info->pltoff_sec)
3015 {
3016 if (strip)
3017 ia64_info->pltoff_sec = NULL;
3018 }
3019 else if (sec == ia64_info->rel_pltoff_sec)
3020 {
3021 if (strip)
3022 ia64_info->rel_pltoff_sec = NULL;
3023 else
3024 {
3025 relplt = TRUE;
3026 /* We use the reloc_count field as a counter if we need to
3027 copy relocs into the output file. */
3028 sec->reloc_count = 0;
3029 }
3030 }
3031 else
3032 {
3033 const char *name;
3034
3035 /* It's OK to base decisions on the section name, because none
3036 of the dynobj section names depend upon the input files. */
3037 name = bfd_get_section_name (dynobj, sec);
3038
3039 if (strcmp (name, ".got.plt") == 0)
3040 strip = FALSE;
3041 else if (strncmp (name, ".rel", 4) == 0)
3042 {
3043 if (!strip)
3044 {
3045 /* We use the reloc_count field as a counter if we need to
3046 copy relocs into the output file. */
3047 sec->reloc_count = 0;
3048 }
3049 }
3050 else
3051 continue;
3052 }
3053
3054 if (strip)
3055 sec->flags |= SEC_EXCLUDE;
3056 else
3057 {
3058 /* Allocate memory for the section contents. */
3059 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3060 if (sec->contents == NULL && sec->size != 0)
3061 return FALSE;
3062 }
3063 }
3064
3065 if (elf_hash_table (info)->dynamic_sections_created)
3066 {
3067 /* Add some entries to the .dynamic section. We fill in the values
3068 later (in finish_dynamic_sections) but we must add the entries now
3069 so that we get the correct size for the .dynamic section. */
3070
3071 if (info->executable)
3072 {
3073 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3074 by the debugger. */
3075 #define add_dynamic_entry(TAG, VAL) \
3076 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3077
3078 if (!add_dynamic_entry (DT_DEBUG, 0))
3079 return FALSE;
3080 }
3081
3082 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3083 return FALSE;
3084 if (!add_dynamic_entry (DT_PLTGOT, 0))
3085 return FALSE;
3086
3087 if (relplt)
3088 {
3089 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3090 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3091 || !add_dynamic_entry (DT_JMPREL, 0))
3092 return FALSE;
3093 }
3094
3095 if (!add_dynamic_entry (DT_RELA, 0)
3096 || !add_dynamic_entry (DT_RELASZ, 0)
3097 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3098 return FALSE;
3099
3100 if (ia64_info->reltext)
3101 {
3102 if (!add_dynamic_entry (DT_TEXTREL, 0))
3103 return FALSE;
3104 info->flags |= DF_TEXTREL;
3105 }
3106 }
3107
3108 /* ??? Perhaps force __gp local. */
3109
3110 return TRUE;
3111 }
3112
3113 static bfd_reloc_status_type
3114 elfNN_ia64_install_value (hit_addr, v, r_type)
3115 bfd_byte *hit_addr;
3116 bfd_vma v;
3117 unsigned int r_type;
3118 {
3119 const struct ia64_operand *op;
3120 int bigendian = 0, shift = 0;
3121 bfd_vma t0, t1, dword;
3122 ia64_insn insn;
3123 enum ia64_opnd opnd;
3124 const char *err;
3125 size_t size = 8;
3126 #ifdef BFD_HOST_U_64_BIT
3127 BFD_HOST_U_64_BIT val = (BFD_HOST_U_64_BIT) v;
3128 #else
3129 bfd_vma val = v;
3130 #endif
3131
3132 opnd = IA64_OPND_NIL;
3133 switch (r_type)
3134 {
3135 case R_IA64_NONE:
3136 case R_IA64_LDXMOV:
3137 return bfd_reloc_ok;
3138
3139 /* Instruction relocations. */
3140
3141 case R_IA64_IMM14:
3142 case R_IA64_TPREL14:
3143 case R_IA64_DTPREL14:
3144 opnd = IA64_OPND_IMM14;
3145 break;
3146
3147 case R_IA64_PCREL21F: opnd = IA64_OPND_TGT25; break;
3148 case R_IA64_PCREL21M: opnd = IA64_OPND_TGT25b; break;
3149 case R_IA64_PCREL60B: opnd = IA64_OPND_TGT64; break;
3150 case R_IA64_PCREL21B:
3151 case R_IA64_PCREL21BI:
3152 opnd = IA64_OPND_TGT25c;
3153 break;
3154
3155 case R_IA64_IMM22:
3156 case R_IA64_GPREL22:
3157 case R_IA64_LTOFF22:
3158 case R_IA64_LTOFF22X:
3159 case R_IA64_PLTOFF22:
3160 case R_IA64_PCREL22:
3161 case R_IA64_LTOFF_FPTR22:
3162 case R_IA64_TPREL22:
3163 case R_IA64_DTPREL22:
3164 case R_IA64_LTOFF_TPREL22:
3165 case R_IA64_LTOFF_DTPMOD22:
3166 case R_IA64_LTOFF_DTPREL22:
3167 opnd = IA64_OPND_IMM22;
3168 break;
3169
3170 case R_IA64_IMM64:
3171 case R_IA64_GPREL64I:
3172 case R_IA64_LTOFF64I:
3173 case R_IA64_PLTOFF64I:
3174 case R_IA64_PCREL64I:
3175 case R_IA64_FPTR64I:
3176 case R_IA64_LTOFF_FPTR64I:
3177 case R_IA64_TPREL64I:
3178 case R_IA64_DTPREL64I:
3179 opnd = IA64_OPND_IMMU64;
3180 break;
3181
3182 /* Data relocations. */
3183
3184 case R_IA64_DIR32MSB:
3185 case R_IA64_GPREL32MSB:
3186 case R_IA64_FPTR32MSB:
3187 case R_IA64_PCREL32MSB:
3188 case R_IA64_LTOFF_FPTR32MSB:
3189 case R_IA64_SEGREL32MSB:
3190 case R_IA64_SECREL32MSB:
3191 case R_IA64_LTV32MSB:
3192 case R_IA64_DTPREL32MSB:
3193 size = 4; bigendian = 1;
3194 break;
3195
3196 case R_IA64_DIR32LSB:
3197 case R_IA64_GPREL32LSB:
3198 case R_IA64_FPTR32LSB:
3199 case R_IA64_PCREL32LSB:
3200 case R_IA64_LTOFF_FPTR32LSB:
3201 case R_IA64_SEGREL32LSB:
3202 case R_IA64_SECREL32LSB:
3203 case R_IA64_LTV32LSB:
3204 case R_IA64_DTPREL32LSB:
3205 size = 4; bigendian = 0;
3206 break;
3207
3208 case R_IA64_DIR64MSB:
3209 case R_IA64_GPREL64MSB:
3210 case R_IA64_PLTOFF64MSB:
3211 case R_IA64_FPTR64MSB:
3212 case R_IA64_PCREL64MSB:
3213 case R_IA64_LTOFF_FPTR64MSB:
3214 case R_IA64_SEGREL64MSB:
3215 case R_IA64_SECREL64MSB:
3216 case R_IA64_LTV64MSB:
3217 case R_IA64_TPREL64MSB:
3218 case R_IA64_DTPMOD64MSB:
3219 case R_IA64_DTPREL64MSB:
3220 size = 8; bigendian = 1;
3221 break;
3222
3223 case R_IA64_DIR64LSB:
3224 case R_IA64_GPREL64LSB:
3225 case R_IA64_PLTOFF64LSB:
3226 case R_IA64_FPTR64LSB:
3227 case R_IA64_PCREL64LSB:
3228 case R_IA64_LTOFF_FPTR64LSB:
3229 case R_IA64_SEGREL64LSB:
3230 case R_IA64_SECREL64LSB:
3231 case R_IA64_LTV64LSB:
3232 case R_IA64_TPREL64LSB:
3233 case R_IA64_DTPMOD64LSB:
3234 case R_IA64_DTPREL64LSB:
3235 size = 8; bigendian = 0;
3236 break;
3237
3238 /* Unsupported / Dynamic relocations. */
3239 default:
3240 return bfd_reloc_notsupported;
3241 }
3242
3243 switch (opnd)
3244 {
3245 case IA64_OPND_IMMU64:
3246 hit_addr -= (long) hit_addr & 0x3;
3247 t0 = bfd_getl64 (hit_addr);
3248 t1 = bfd_getl64 (hit_addr + 8);
3249
3250 /* tmpl/s: bits 0.. 5 in t0
3251 slot 0: bits 5..45 in t0
3252 slot 1: bits 46..63 in t0, bits 0..22 in t1
3253 slot 2: bits 23..63 in t1 */
3254
3255 /* First, clear the bits that form the 64 bit constant. */
3256 t0 &= ~(0x3ffffLL << 46);
3257 t1 &= ~(0x7fffffLL
3258 | (( (0x07fLL << 13) | (0x1ffLL << 27)
3259 | (0x01fLL << 22) | (0x001LL << 21)
3260 | (0x001LL << 36)) << 23));
3261
3262 t0 |= ((val >> 22) & 0x03ffffLL) << 46; /* 18 lsbs of imm41 */
3263 t1 |= ((val >> 40) & 0x7fffffLL) << 0; /* 23 msbs of imm41 */
3264 t1 |= ( (((val >> 0) & 0x07f) << 13) /* imm7b */
3265 | (((val >> 7) & 0x1ff) << 27) /* imm9d */
3266 | (((val >> 16) & 0x01f) << 22) /* imm5c */
3267 | (((val >> 21) & 0x001) << 21) /* ic */
3268 | (((val >> 63) & 0x001) << 36)) << 23; /* i */
3269
3270 bfd_putl64 (t0, hit_addr);
3271 bfd_putl64 (t1, hit_addr + 8);
3272 break;
3273
3274 case IA64_OPND_TGT64:
3275 hit_addr -= (long) hit_addr & 0x3;
3276 t0 = bfd_getl64 (hit_addr);
3277 t1 = bfd_getl64 (hit_addr + 8);
3278
3279 /* tmpl/s: bits 0.. 5 in t0
3280 slot 0: bits 5..45 in t0
3281 slot 1: bits 46..63 in t0, bits 0..22 in t1
3282 slot 2: bits 23..63 in t1 */
3283
3284 /* First, clear the bits that form the 64 bit constant. */
3285 t0 &= ~(0x3ffffLL << 46);
3286 t1 &= ~(0x7fffffLL
3287 | ((1LL << 36 | 0xfffffLL << 13) << 23));
3288
3289 val >>= 4;
3290 t0 |= ((val >> 20) & 0xffffLL) << 2 << 46; /* 16 lsbs of imm39 */
3291 t1 |= ((val >> 36) & 0x7fffffLL) << 0; /* 23 msbs of imm39 */
3292 t1 |= ((((val >> 0) & 0xfffffLL) << 13) /* imm20b */
3293 | (((val >> 59) & 0x1LL) << 36)) << 23; /* i */
3294
3295 bfd_putl64 (t0, hit_addr);
3296 bfd_putl64 (t1, hit_addr + 8);
3297 break;
3298
3299 default:
3300 switch ((long) hit_addr & 0x3)
3301 {
3302 case 0: shift = 5; break;
3303 case 1: shift = 14; hit_addr += 3; break;
3304 case 2: shift = 23; hit_addr += 6; break;
3305 case 3: return bfd_reloc_notsupported; /* shouldn't happen... */
3306 }
3307 dword = bfd_getl64 (hit_addr);
3308 insn = (dword >> shift) & 0x1ffffffffffLL;
3309
3310 op = elf64_ia64_operands + opnd;
3311 err = (*op->insert) (op, val, &insn);
3312 if (err)
3313 return bfd_reloc_overflow;
3314
3315 dword &= ~(0x1ffffffffffLL << shift);
3316 dword |= (insn << shift);
3317 bfd_putl64 (dword, hit_addr);
3318 break;
3319
3320 case IA64_OPND_NIL:
3321 /* A data relocation. */
3322 if (bigendian)
3323 if (size == 4)
3324 bfd_putb32 (val, hit_addr);
3325 else
3326 bfd_putb64 (val, hit_addr);
3327 else
3328 if (size == 4)
3329 bfd_putl32 (val, hit_addr);
3330 else
3331 bfd_putl64 (val, hit_addr);
3332 break;
3333 }
3334
3335 return bfd_reloc_ok;
3336 }
3337
3338 static void
3339 elfNN_ia64_install_dyn_reloc (abfd, info, sec, srel, offset, type,
3340 dynindx, addend)
3341 bfd *abfd;
3342 struct bfd_link_info *info;
3343 asection *sec;
3344 asection *srel;
3345 bfd_vma offset;
3346 unsigned int type;
3347 long dynindx;
3348 bfd_vma addend;
3349 {
3350 Elf_Internal_Rela outrel;
3351 bfd_byte *loc;
3352
3353 BFD_ASSERT (dynindx != -1);
3354 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3355 outrel.r_addend = addend;
3356 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3357 if (outrel.r_offset >= (bfd_vma) -2)
3358 {
3359 /* Run for the hills. We shouldn't be outputting a relocation
3360 for this. So do what everyone else does and output a no-op. */
3361 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3362 outrel.r_addend = 0;
3363 outrel.r_offset = 0;
3364 }
3365 else
3366 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3367
3368 loc = srel->contents;
3369 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3370 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3371 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3372 }
3373
3374 /* Store an entry for target address TARGET_ADDR in the linkage table
3375 and return the gp-relative address of the linkage table entry. */
3376
3377 static bfd_vma
3378 set_got_entry (abfd, info, dyn_i, dynindx, addend, value, dyn_r_type)
3379 bfd *abfd;
3380 struct bfd_link_info *info;
3381 struct elfNN_ia64_dyn_sym_info *dyn_i;
3382 long dynindx;
3383 bfd_vma addend;
3384 bfd_vma value;
3385 unsigned int dyn_r_type;
3386 {
3387 struct elfNN_ia64_link_hash_table *ia64_info;
3388 asection *got_sec;
3389 bfd_boolean done;
3390 bfd_vma got_offset;
3391
3392 ia64_info = elfNN_ia64_hash_table (info);
3393 got_sec = ia64_info->got_sec;
3394
3395 switch (dyn_r_type)
3396 {
3397 case R_IA64_TPREL64LSB:
3398 done = dyn_i->tprel_done;
3399 dyn_i->tprel_done = TRUE;
3400 got_offset = dyn_i->tprel_offset;
3401 break;
3402 case R_IA64_DTPMOD64LSB:
3403 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3404 {
3405 done = dyn_i->dtpmod_done;
3406 dyn_i->dtpmod_done = TRUE;
3407 }
3408 else
3409 {
3410 done = ia64_info->self_dtpmod_done;
3411 ia64_info->self_dtpmod_done = TRUE;
3412 dynindx = 0;
3413 }
3414 got_offset = dyn_i->dtpmod_offset;
3415 break;
3416 case R_IA64_DTPREL64LSB:
3417 done = dyn_i->dtprel_done;
3418 dyn_i->dtprel_done = TRUE;
3419 got_offset = dyn_i->dtprel_offset;
3420 break;
3421 default:
3422 done = dyn_i->got_done;
3423 dyn_i->got_done = TRUE;
3424 got_offset = dyn_i->got_offset;
3425 break;
3426 }
3427
3428 BFD_ASSERT ((got_offset & 7) == 0);
3429
3430 if (! done)
3431 {
3432 /* Store the target address in the linkage table entry. */
3433 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3434
3435 /* Install a dynamic relocation if needed. */
3436 if (((info->shared
3437 && (!dyn_i->h
3438 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3439 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3440 && dyn_r_type != R_IA64_DTPREL64LSB)
3441 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3442 || (dynindx != -1 && dyn_r_type == R_IA64_FPTR64LSB))
3443 && (!dyn_i->want_ltoff_fptr
3444 || !info->pie
3445 || !dyn_i->h
3446 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3447 {
3448 if (dynindx == -1
3449 && dyn_r_type != R_IA64_TPREL64LSB
3450 && dyn_r_type != R_IA64_DTPMOD64LSB
3451 && dyn_r_type != R_IA64_DTPREL64LSB)
3452 {
3453 dyn_r_type = R_IA64_REL64LSB;
3454 dynindx = 0;
3455 addend = value;
3456 }
3457
3458 if (bfd_big_endian (abfd))
3459 {
3460 switch (dyn_r_type)
3461 {
3462 case R_IA64_REL64LSB:
3463 dyn_r_type = R_IA64_REL64MSB;
3464 break;
3465 case R_IA64_DIR64LSB:
3466 dyn_r_type = R_IA64_DIR64MSB;
3467 break;
3468 case R_IA64_FPTR64LSB:
3469 dyn_r_type = R_IA64_FPTR64MSB;
3470 break;
3471 case R_IA64_TPREL64LSB:
3472 dyn_r_type = R_IA64_TPREL64MSB;
3473 break;
3474 case R_IA64_DTPMOD64LSB:
3475 dyn_r_type = R_IA64_DTPMOD64MSB;
3476 break;
3477 case R_IA64_DTPREL64LSB:
3478 dyn_r_type = R_IA64_DTPREL64MSB;
3479 break;
3480 default:
3481 BFD_ASSERT (FALSE);
3482 break;
3483 }
3484 }
3485
3486 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3487 ia64_info->rel_got_sec,
3488 got_offset, dyn_r_type,
3489 dynindx, addend);
3490 }
3491 }
3492
3493 /* Return the address of the linkage table entry. */
3494 value = (got_sec->output_section->vma
3495 + got_sec->output_offset
3496 + got_offset);
3497
3498 return value;
3499 }
3500
3501 /* Fill in a function descriptor consisting of the function's code
3502 address and its global pointer. Return the descriptor's address. */
3503
3504 static bfd_vma
3505 set_fptr_entry (abfd, info, dyn_i, value)
3506 bfd *abfd;
3507 struct bfd_link_info *info;
3508 struct elfNN_ia64_dyn_sym_info *dyn_i;
3509 bfd_vma value;
3510 {
3511 struct elfNN_ia64_link_hash_table *ia64_info;
3512 asection *fptr_sec;
3513
3514 ia64_info = elfNN_ia64_hash_table (info);
3515 fptr_sec = ia64_info->fptr_sec;
3516
3517 if (!dyn_i->fptr_done)
3518 {
3519 dyn_i->fptr_done = 1;
3520
3521 /* Fill in the function descriptor. */
3522 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3523 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3524 fptr_sec->contents + dyn_i->fptr_offset + 8);
3525 if (ia64_info->rel_fptr_sec)
3526 {
3527 Elf_Internal_Rela outrel;
3528 bfd_byte *loc;
3529
3530 if (bfd_little_endian (abfd))
3531 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3532 else
3533 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3534 outrel.r_addend = value;
3535 outrel.r_offset = (fptr_sec->output_section->vma
3536 + fptr_sec->output_offset
3537 + dyn_i->fptr_offset);
3538 loc = ia64_info->rel_fptr_sec->contents;
3539 loc += ia64_info->rel_fptr_sec->reloc_count++
3540 * sizeof (ElfNN_External_Rela);
3541 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3542 }
3543 }
3544
3545 /* Return the descriptor's address. */
3546 value = (fptr_sec->output_section->vma
3547 + fptr_sec->output_offset
3548 + dyn_i->fptr_offset);
3549
3550 return value;
3551 }
3552
3553 /* Fill in a PLTOFF entry consisting of the function's code address
3554 and its global pointer. Return the descriptor's address. */
3555
3556 static bfd_vma
3557 set_pltoff_entry (abfd, info, dyn_i, value, is_plt)
3558 bfd *abfd;
3559 struct bfd_link_info *info;
3560 struct elfNN_ia64_dyn_sym_info *dyn_i;
3561 bfd_vma value;
3562 bfd_boolean is_plt;
3563 {
3564 struct elfNN_ia64_link_hash_table *ia64_info;
3565 asection *pltoff_sec;
3566
3567 ia64_info = elfNN_ia64_hash_table (info);
3568 pltoff_sec = ia64_info->pltoff_sec;
3569
3570 /* Don't do anything if this symbol uses a real PLT entry. In
3571 that case, we'll fill this in during finish_dynamic_symbol. */
3572 if ((! dyn_i->want_plt || is_plt)
3573 && !dyn_i->pltoff_done)
3574 {
3575 bfd_vma gp = _bfd_get_gp_value (abfd);
3576
3577 /* Fill in the function descriptor. */
3578 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3579 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3580
3581 /* Install dynamic relocations if needed. */
3582 if (!is_plt
3583 && info->shared
3584 && (!dyn_i->h
3585 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3586 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3587 {
3588 unsigned int dyn_r_type;
3589
3590 if (bfd_big_endian (abfd))
3591 dyn_r_type = R_IA64_REL64MSB;
3592 else
3593 dyn_r_type = R_IA64_REL64LSB;
3594
3595 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3596 ia64_info->rel_pltoff_sec,
3597 dyn_i->pltoff_offset,
3598 dyn_r_type, 0, value);
3599 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3600 ia64_info->rel_pltoff_sec,
3601 dyn_i->pltoff_offset + 8,
3602 dyn_r_type, 0, gp);
3603 }
3604
3605 dyn_i->pltoff_done = 1;
3606 }
3607
3608 /* Return the descriptor's address. */
3609 value = (pltoff_sec->output_section->vma
3610 + pltoff_sec->output_offset
3611 + dyn_i->pltoff_offset);
3612
3613 return value;
3614 }
3615
3616 /* Return the base VMA address which should be subtracted from real addresses
3617 when resolving @tprel() relocation.
3618 Main program TLS (whose template starts at PT_TLS p_vaddr)
3619 is assigned offset round(16, PT_TLS p_align). */
3620
3621 static bfd_vma
3622 elfNN_ia64_tprel_base (info)
3623 struct bfd_link_info *info;
3624 {
3625 asection *tls_sec = elf_hash_table (info)->tls_sec;
3626
3627 BFD_ASSERT (tls_sec != NULL);
3628 return tls_sec->vma - align_power ((bfd_vma) 16, tls_sec->alignment_power);
3629 }
3630
3631 /* Return the base VMA address which should be subtracted from real addresses
3632 when resolving @dtprel() relocation.
3633 This is PT_TLS segment p_vaddr. */
3634
3635 static bfd_vma
3636 elfNN_ia64_dtprel_base (info)
3637 struct bfd_link_info *info;
3638 {
3639 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
3640 return elf_hash_table (info)->tls_sec->vma;
3641 }
3642
3643 /* Called through qsort to sort the .IA_64.unwind section during a
3644 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3645 to the output bfd so we can do proper endianness frobbing. */
3646
3647 static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3648
3649 static int
3650 elfNN_ia64_unwind_entry_compare (a, b)
3651 const PTR a;
3652 const PTR b;
3653 {
3654 bfd_vma av, bv;
3655
3656 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3657 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3658
3659 return (av < bv ? -1 : av > bv ? 1 : 0);
3660 }
3661
3662 /* Make sure we've got ourselves a nice fat __gp value. */
3663 static bfd_boolean
3664 elfNN_ia64_choose_gp (abfd, info)
3665 bfd *abfd;
3666 struct bfd_link_info *info;
3667 {
3668 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3669 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3670 struct elf_link_hash_entry *gp;
3671 bfd_vma gp_val;
3672 asection *os;
3673 struct elfNN_ia64_link_hash_table *ia64_info;
3674
3675 ia64_info = elfNN_ia64_hash_table (info);
3676
3677 /* Find the min and max vma of all sections marked short. Also collect
3678 min and max vma of any type, for use in selecting a nice gp. */
3679 for (os = abfd->sections; os ; os = os->next)
3680 {
3681 bfd_vma lo, hi;
3682
3683 if ((os->flags & SEC_ALLOC) == 0)
3684 continue;
3685
3686 lo = os->vma;
3687 hi = os->vma + os->size;
3688 if (hi < lo)
3689 hi = (bfd_vma) -1;
3690
3691 if (min_vma > lo)
3692 min_vma = lo;
3693 if (max_vma < hi)
3694 max_vma = hi;
3695 if (os->flags & SEC_SMALL_DATA)
3696 {
3697 if (min_short_vma > lo)
3698 min_short_vma = lo;
3699 if (max_short_vma < hi)
3700 max_short_vma = hi;
3701 }
3702 }
3703
3704 /* See if the user wants to force a value. */
3705 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3706 FALSE, FALSE);
3707
3708 if (gp
3709 && (gp->root.type == bfd_link_hash_defined
3710 || gp->root.type == bfd_link_hash_defweak))
3711 {
3712 asection *gp_sec = gp->root.u.def.section;
3713 gp_val = (gp->root.u.def.value
3714 + gp_sec->output_section->vma
3715 + gp_sec->output_offset);
3716 }
3717 else
3718 {
3719 /* Pick a sensible value. */
3720
3721 asection *got_sec = ia64_info->got_sec;
3722
3723 /* Start with just the address of the .got. */
3724 if (got_sec)
3725 gp_val = got_sec->output_section->vma;
3726 else if (max_short_vma != 0)
3727 gp_val = min_short_vma;
3728 else
3729 gp_val = min_vma;
3730
3731 /* If it is possible to address the entire image, but we
3732 don't with the choice above, adjust. */
3733 if (max_vma - min_vma < 0x400000
3734 && max_vma - gp_val <= 0x200000
3735 && gp_val - min_vma > 0x200000)
3736 gp_val = min_vma + 0x200000;
3737 else if (max_short_vma != 0)
3738 {
3739 /* If we don't cover all the short data, adjust. */
3740 if (max_short_vma - gp_val >= 0x200000)
3741 gp_val = min_short_vma + 0x200000;
3742
3743 /* If we're addressing stuff past the end, adjust back. */
3744 if (gp_val > max_vma)
3745 gp_val = max_vma - 0x200000 + 8;
3746 }
3747 }
3748
3749 /* Validate whether all SHF_IA_64_SHORT sections are within
3750 range of the chosen GP. */
3751
3752 if (max_short_vma != 0)
3753 {
3754 if (max_short_vma - min_short_vma >= 0x400000)
3755 {
3756 (*_bfd_error_handler)
3757 (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3758 bfd_get_filename (abfd),
3759 (unsigned long) (max_short_vma - min_short_vma));
3760 return FALSE;
3761 }
3762 else if ((gp_val > min_short_vma
3763 && gp_val - min_short_vma > 0x200000)
3764 || (gp_val < max_short_vma
3765 && max_short_vma - gp_val >= 0x200000))
3766 {
3767 (*_bfd_error_handler)
3768 (_("%s: __gp does not cover short data segment"),
3769 bfd_get_filename (abfd));
3770 return FALSE;
3771 }
3772 }
3773
3774 _bfd_set_gp_value (abfd, gp_val);
3775
3776 return TRUE;
3777 }
3778
3779 static bfd_boolean
3780 elfNN_ia64_final_link (abfd, info)
3781 bfd *abfd;
3782 struct bfd_link_info *info;
3783 {
3784 struct elfNN_ia64_link_hash_table *ia64_info;
3785 asection *unwind_output_sec;
3786
3787 ia64_info = elfNN_ia64_hash_table (info);
3788
3789 /* Make sure we've got ourselves a nice fat __gp value. */
3790 if (!info->relocatable)
3791 {
3792 bfd_vma gp_val = _bfd_get_gp_value (abfd);
3793 struct elf_link_hash_entry *gp;
3794
3795 if (gp_val == 0)
3796 {
3797 if (! elfNN_ia64_choose_gp (abfd, info))
3798 return FALSE;
3799 gp_val = _bfd_get_gp_value (abfd);
3800 }
3801
3802 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3803 FALSE, FALSE);
3804 if (gp)
3805 {
3806 gp->root.type = bfd_link_hash_defined;
3807 gp->root.u.def.value = gp_val;
3808 gp->root.u.def.section = bfd_abs_section_ptr;
3809 }
3810 }
3811
3812 /* If we're producing a final executable, we need to sort the contents
3813 of the .IA_64.unwind section. Force this section to be relocated
3814 into memory rather than written immediately to the output file. */
3815 unwind_output_sec = NULL;
3816 if (!info->relocatable)
3817 {
3818 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3819 if (s)
3820 {
3821 unwind_output_sec = s->output_section;
3822 unwind_output_sec->contents
3823 = bfd_malloc (unwind_output_sec->size);
3824 if (unwind_output_sec->contents == NULL)
3825 return FALSE;
3826 }
3827 }
3828
3829 /* Invoke the regular ELF backend linker to do all the work. */
3830 if (!bfd_elf_final_link (abfd, info))
3831 return FALSE;
3832
3833 if (unwind_output_sec)
3834 {
3835 elfNN_ia64_unwind_entry_compare_bfd = abfd;
3836 qsort (unwind_output_sec->contents,
3837 (size_t) (unwind_output_sec->size / 24),
3838 24,
3839 elfNN_ia64_unwind_entry_compare);
3840
3841 if (! bfd_set_section_contents (abfd, unwind_output_sec,
3842 unwind_output_sec->contents, (bfd_vma) 0,
3843 unwind_output_sec->size))
3844 return FALSE;
3845 }
3846
3847 return TRUE;
3848 }
3849
3850 static bfd_boolean
3851 elfNN_ia64_relocate_section (output_bfd, info, input_bfd, input_section,
3852 contents, relocs, local_syms, local_sections)
3853 bfd *output_bfd;
3854 struct bfd_link_info *info;
3855 bfd *input_bfd;
3856 asection *input_section;
3857 bfd_byte *contents;
3858 Elf_Internal_Rela *relocs;
3859 Elf_Internal_Sym *local_syms;
3860 asection **local_sections;
3861 {
3862 struct elfNN_ia64_link_hash_table *ia64_info;
3863 Elf_Internal_Shdr *symtab_hdr;
3864 Elf_Internal_Rela *rel;
3865 Elf_Internal_Rela *relend;
3866 asection *srel;
3867 bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3868 bfd_vma gp_val;
3869
3870 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3871 ia64_info = elfNN_ia64_hash_table (info);
3872
3873 /* Infect various flags from the input section to the output section. */
3874 if (info->relocatable)
3875 {
3876 bfd_vma flags;
3877
3878 flags = elf_section_data(input_section)->this_hdr.sh_flags;
3879 flags &= SHF_IA_64_NORECOV;
3880
3881 elf_section_data(input_section->output_section)
3882 ->this_hdr.sh_flags |= flags;
3883 return TRUE;
3884 }
3885
3886 gp_val = _bfd_get_gp_value (output_bfd);
3887 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3888
3889 rel = relocs;
3890 relend = relocs + input_section->reloc_count;
3891 for (; rel < relend; ++rel)
3892 {
3893 struct elf_link_hash_entry *h;
3894 struct elfNN_ia64_dyn_sym_info *dyn_i;
3895 bfd_reloc_status_type r;
3896 reloc_howto_type *howto;
3897 unsigned long r_symndx;
3898 Elf_Internal_Sym *sym;
3899 unsigned int r_type;
3900 bfd_vma value;
3901 asection *sym_sec;
3902 bfd_byte *hit_addr;
3903 bfd_boolean dynamic_symbol_p;
3904 bfd_boolean undef_weak_ref;
3905
3906 r_type = ELFNN_R_TYPE (rel->r_info);
3907 if (r_type > R_IA64_MAX_RELOC_CODE)
3908 {
3909 (*_bfd_error_handler)
3910 (_("%B: unknown relocation type %d"),
3911 input_bfd, (int) r_type);
3912 bfd_set_error (bfd_error_bad_value);
3913 ret_val = FALSE;
3914 continue;
3915 }
3916
3917 howto = lookup_howto (r_type);
3918 r_symndx = ELFNN_R_SYM (rel->r_info);
3919 h = NULL;
3920 sym = NULL;
3921 sym_sec = NULL;
3922 undef_weak_ref = FALSE;
3923
3924 if (r_symndx < symtab_hdr->sh_info)
3925 {
3926 /* Reloc against local symbol. */
3927 asection *msec;
3928 sym = local_syms + r_symndx;
3929 sym_sec = local_sections[r_symndx];
3930 msec = sym_sec;
3931 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3932 if ((sym_sec->flags & SEC_MERGE)
3933 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3934 && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE)
3935 {
3936 struct elfNN_ia64_local_hash_entry *loc_h;
3937
3938 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3939 if (loc_h && ! loc_h->sec_merge_done)
3940 {
3941 struct elfNN_ia64_dyn_sym_info *dynent;
3942
3943 for (dynent = loc_h->info; dynent; dynent = dynent->next)
3944 {
3945 msec = sym_sec;
3946 dynent->addend =
3947 _bfd_merged_section_offset (output_bfd, &msec,
3948 elf_section_data (msec)->
3949 sec_info,
3950 sym->st_value
3951 + dynent->addend);
3952 dynent->addend -= sym->st_value;
3953 dynent->addend += msec->output_section->vma
3954 + msec->output_offset
3955 - sym_sec->output_section->vma
3956 - sym_sec->output_offset;
3957 }
3958 loc_h->sec_merge_done = 1;
3959 }
3960 }
3961 }
3962 else
3963 {
3964 bfd_boolean unresolved_reloc;
3965 bfd_boolean warned;
3966 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3967
3968 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3969 r_symndx, symtab_hdr, sym_hashes,
3970 h, sym_sec, value,
3971 unresolved_reloc, warned);
3972
3973 if (h->root.type == bfd_link_hash_undefweak)
3974 undef_weak_ref = TRUE;
3975 else if (warned)
3976 continue;
3977 }
3978
3979 hit_addr = contents + rel->r_offset;
3980 value += rel->r_addend;
3981 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3982
3983 switch (r_type)
3984 {
3985 case R_IA64_NONE:
3986 case R_IA64_LDXMOV:
3987 continue;
3988
3989 case R_IA64_IMM14:
3990 case R_IA64_IMM22:
3991 case R_IA64_IMM64:
3992 case R_IA64_DIR32MSB:
3993 case R_IA64_DIR32LSB:
3994 case R_IA64_DIR64MSB:
3995 case R_IA64_DIR64LSB:
3996 /* Install a dynamic relocation for this reloc. */
3997 if ((dynamic_symbol_p || info->shared)
3998 && r_symndx != 0
3999 && (input_section->flags & SEC_ALLOC) != 0)
4000 {
4001 unsigned int dyn_r_type;
4002 long dynindx;
4003 bfd_vma addend;
4004
4005 BFD_ASSERT (srel != NULL);
4006
4007 switch (r_type)
4008 {
4009 case R_IA64_IMM14:
4010 case R_IA64_IMM22:
4011 case R_IA64_IMM64:
4012 /* ??? People shouldn't be doing non-pic code in
4013 shared libraries nor dynamic executables. */
4014 (*_bfd_error_handler)
4015 (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
4016 input_bfd,
4017 h ? h->root.root.string
4018 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4019 sym_sec));
4020 ret_val = FALSE;
4021 continue;
4022
4023 default:
4024 break;
4025 }
4026
4027 /* If we don't need dynamic symbol lookup, find a
4028 matching RELATIVE relocation. */
4029 dyn_r_type = r_type;
4030 if (dynamic_symbol_p)
4031 {
4032 dynindx = h->dynindx;
4033 addend = rel->r_addend;
4034 value = 0;
4035 }
4036 else
4037 {
4038 switch (r_type)
4039 {
4040 case R_IA64_DIR32MSB:
4041 dyn_r_type = R_IA64_REL32MSB;
4042 break;
4043 case R_IA64_DIR32LSB:
4044 dyn_r_type = R_IA64_REL32LSB;
4045 break;
4046 case R_IA64_DIR64MSB:
4047 dyn_r_type = R_IA64_REL64MSB;
4048 break;
4049 case R_IA64_DIR64LSB:
4050 dyn_r_type = R_IA64_REL64LSB;
4051 break;
4052
4053 default:
4054 break;
4055 }
4056 dynindx = 0;
4057 addend = value;
4058 }
4059
4060 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4061 srel, rel->r_offset, dyn_r_type,
4062 dynindx, addend);
4063 }
4064 /* Fall through. */
4065
4066 case R_IA64_LTV32MSB:
4067 case R_IA64_LTV32LSB:
4068 case R_IA64_LTV64MSB:
4069 case R_IA64_LTV64LSB:
4070 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4071 break;
4072
4073 case R_IA64_GPREL22:
4074 case R_IA64_GPREL64I:
4075 case R_IA64_GPREL32MSB:
4076 case R_IA64_GPREL32LSB:
4077 case R_IA64_GPREL64MSB:
4078 case R_IA64_GPREL64LSB:
4079 if (dynamic_symbol_p)
4080 {
4081 (*_bfd_error_handler)
4082 (_("%B: @gprel relocation against dynamic symbol %s"),
4083 input_bfd,
4084 h ? h->root.root.string
4085 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4086 sym_sec));
4087 ret_val = FALSE;
4088 continue;
4089 }
4090 value -= gp_val;
4091 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4092 break;
4093
4094 case R_IA64_LTOFF22:
4095 case R_IA64_LTOFF22X:
4096 case R_IA64_LTOFF64I:
4097 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4098 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4099 rel->r_addend, value, R_IA64_DIR64LSB);
4100 value -= gp_val;
4101 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4102 break;
4103
4104 case R_IA64_PLTOFF22:
4105 case R_IA64_PLTOFF64I:
4106 case R_IA64_PLTOFF64MSB:
4107 case R_IA64_PLTOFF64LSB:
4108 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4109 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4110 value -= gp_val;
4111 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4112 break;
4113
4114 case R_IA64_FPTR64I:
4115 case R_IA64_FPTR32MSB:
4116 case R_IA64_FPTR32LSB:
4117 case R_IA64_FPTR64MSB:
4118 case R_IA64_FPTR64LSB:
4119 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4120 if (dyn_i->want_fptr)
4121 {
4122 if (!undef_weak_ref)
4123 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4124 }
4125 if (!dyn_i->want_fptr || info->pie)
4126 {
4127 long dynindx;
4128 unsigned int dyn_r_type = r_type;
4129 bfd_vma addend = rel->r_addend;
4130
4131 /* Otherwise, we expect the dynamic linker to create
4132 the entry. */
4133
4134 if (dyn_i->want_fptr)
4135 {
4136 if (r_type == R_IA64_FPTR64I)
4137 {
4138 /* We can't represent this without a dynamic symbol.
4139 Adjust the relocation to be against an output
4140 section symbol, which are always present in the
4141 dynamic symbol table. */
4142 /* ??? People shouldn't be doing non-pic code in
4143 shared libraries. Hork. */
4144 (*_bfd_error_handler)
4145 (_("%B: linking non-pic code in a position independent executable"),
4146 input_bfd);
4147 ret_val = FALSE;
4148 continue;
4149 }
4150 dynindx = 0;
4151 addend = value;
4152 dyn_r_type = r_type + R_IA64_REL64LSB - R_IA64_FPTR64LSB;
4153 }
4154 else if (h)
4155 {
4156 if (h->dynindx != -1)
4157 dynindx = h->dynindx;
4158 else
4159 dynindx = (_bfd_elf_link_lookup_local_dynindx
4160 (info, h->root.u.def.section->owner,
4161 global_sym_index (h)));
4162 value = 0;
4163 }
4164 else
4165 {
4166 dynindx = (_bfd_elf_link_lookup_local_dynindx
4167 (info, input_bfd, (long) r_symndx));
4168 value = 0;
4169 }
4170
4171 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4172 srel, rel->r_offset, dyn_r_type,
4173 dynindx, addend);
4174 }
4175
4176 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4177 break;
4178
4179 case R_IA64_LTOFF_FPTR22:
4180 case R_IA64_LTOFF_FPTR64I:
4181 case R_IA64_LTOFF_FPTR32MSB:
4182 case R_IA64_LTOFF_FPTR32LSB:
4183 case R_IA64_LTOFF_FPTR64MSB:
4184 case R_IA64_LTOFF_FPTR64LSB:
4185 {
4186 long dynindx;
4187
4188 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4189 if (dyn_i->want_fptr)
4190 {
4191 BFD_ASSERT (h == NULL || h->dynindx == -1);
4192 if (!undef_weak_ref)
4193 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4194 dynindx = -1;
4195 }
4196 else
4197 {
4198 /* Otherwise, we expect the dynamic linker to create
4199 the entry. */
4200 if (h)
4201 {
4202 if (h->dynindx != -1)
4203 dynindx = h->dynindx;
4204 else
4205 dynindx = (_bfd_elf_link_lookup_local_dynindx
4206 (info, h->root.u.def.section->owner,
4207 global_sym_index (h)));
4208 }
4209 else
4210 dynindx = (_bfd_elf_link_lookup_local_dynindx
4211 (info, input_bfd, (long) r_symndx));
4212 value = 0;
4213 }
4214
4215 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4216 rel->r_addend, value, R_IA64_FPTR64LSB);
4217 value -= gp_val;
4218 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4219 }
4220 break;
4221
4222 case R_IA64_PCREL32MSB:
4223 case R_IA64_PCREL32LSB:
4224 case R_IA64_PCREL64MSB:
4225 case R_IA64_PCREL64LSB:
4226 /* Install a dynamic relocation for this reloc. */
4227 if (dynamic_symbol_p && r_symndx != 0)
4228 {
4229 BFD_ASSERT (srel != NULL);
4230
4231 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4232 srel, rel->r_offset, r_type,
4233 h->dynindx, rel->r_addend);
4234 }
4235 goto finish_pcrel;
4236
4237 case R_IA64_PCREL21B:
4238 case R_IA64_PCREL60B:
4239 /* We should have created a PLT entry for any dynamic symbol. */
4240 dyn_i = NULL;
4241 if (h)
4242 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4243
4244 if (dyn_i && dyn_i->want_plt2)
4245 {
4246 /* Should have caught this earlier. */
4247 BFD_ASSERT (rel->r_addend == 0);
4248
4249 value = (ia64_info->plt_sec->output_section->vma
4250 + ia64_info->plt_sec->output_offset
4251 + dyn_i->plt2_offset);
4252 }
4253 else
4254 {
4255 /* Since there's no PLT entry, Validate that this is
4256 locally defined. */
4257 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4258
4259 /* If the symbol is undef_weak, we shouldn't be trying
4260 to call it. There's every chance that we'd wind up
4261 with an out-of-range fixup here. Don't bother setting
4262 any value at all. */
4263 if (undef_weak_ref)
4264 continue;
4265 }
4266 goto finish_pcrel;
4267
4268 case R_IA64_PCREL21BI:
4269 case R_IA64_PCREL21F:
4270 case R_IA64_PCREL21M:
4271 case R_IA64_PCREL22:
4272 case R_IA64_PCREL64I:
4273 /* The PCREL21BI reloc is specifically not intended for use with
4274 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4275 fixup code, and thus probably ought not be dynamic. The
4276 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4277 if (dynamic_symbol_p)
4278 {
4279 const char *msg;
4280
4281 if (r_type == R_IA64_PCREL21BI)
4282 msg = _("%B: @internal branch to dynamic symbol %s");
4283 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4284 msg = _("%B: speculation fixup to dynamic symbol %s");
4285 else
4286 msg = _("%B: @pcrel relocation against dynamic symbol %s");
4287 (*_bfd_error_handler) (msg, input_bfd,
4288 h ? h->root.root.string
4289 : bfd_elf_sym_name (input_bfd,
4290 symtab_hdr,
4291 sym,
4292 sym_sec));
4293 ret_val = FALSE;
4294 continue;
4295 }
4296 goto finish_pcrel;
4297
4298 finish_pcrel:
4299 /* Make pc-relative. */
4300 value -= (input_section->output_section->vma
4301 + input_section->output_offset
4302 + rel->r_offset) & ~ (bfd_vma) 0x3;
4303 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4304 break;
4305
4306 case R_IA64_SEGREL32MSB:
4307 case R_IA64_SEGREL32LSB:
4308 case R_IA64_SEGREL64MSB:
4309 case R_IA64_SEGREL64LSB:
4310 if (r_symndx == 0)
4311 {
4312 /* If the input section was discarded from the output, then
4313 do nothing. */
4314 r = bfd_reloc_ok;
4315 }
4316 else
4317 {
4318 struct elf_segment_map *m;
4319 Elf_Internal_Phdr *p;
4320
4321 /* Find the segment that contains the output_section. */
4322 for (m = elf_tdata (output_bfd)->segment_map,
4323 p = elf_tdata (output_bfd)->phdr;
4324 m != NULL;
4325 m = m->next, p++)
4326 {
4327 int i;
4328 for (i = m->count - 1; i >= 0; i--)
4329 if (m->sections[i] == input_section->output_section)
4330 break;
4331 if (i >= 0)
4332 break;
4333 }
4334
4335 if (m == NULL)
4336 {
4337 r = bfd_reloc_notsupported;
4338 }
4339 else
4340 {
4341 /* The VMA of the segment is the vaddr of the associated
4342 program header. */
4343 if (value > p->p_vaddr)
4344 value -= p->p_vaddr;
4345 else
4346 value = 0;
4347 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4348 }
4349 break;
4350 }
4351
4352 case R_IA64_SECREL32MSB:
4353 case R_IA64_SECREL32LSB:
4354 case R_IA64_SECREL64MSB:
4355 case R_IA64_SECREL64LSB:
4356 /* Make output-section relative to section where the symbol
4357 is defined. PR 475 */
4358 if (sym_sec)
4359 value -= sym_sec->output_section->vma;
4360 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4361 break;
4362
4363 case R_IA64_IPLTMSB:
4364 case R_IA64_IPLTLSB:
4365 /* Install a dynamic relocation for this reloc. */
4366 if ((dynamic_symbol_p || info->shared)
4367 && (input_section->flags & SEC_ALLOC) != 0)
4368 {
4369 BFD_ASSERT (srel != NULL);
4370
4371 /* If we don't need dynamic symbol lookup, install two
4372 RELATIVE relocations. */
4373 if (!dynamic_symbol_p)
4374 {
4375 unsigned int dyn_r_type;
4376
4377 if (r_type == R_IA64_IPLTMSB)
4378 dyn_r_type = R_IA64_REL64MSB;
4379 else
4380 dyn_r_type = R_IA64_REL64LSB;
4381
4382 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4383 input_section,
4384 srel, rel->r_offset,
4385 dyn_r_type, 0, value);
4386 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4387 input_section,
4388 srel, rel->r_offset + 8,
4389 dyn_r_type, 0, gp_val);
4390 }
4391 else
4392 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4393 srel, rel->r_offset, r_type,
4394 h->dynindx, rel->r_addend);
4395 }
4396
4397 if (r_type == R_IA64_IPLTMSB)
4398 r_type = R_IA64_DIR64MSB;
4399 else
4400 r_type = R_IA64_DIR64LSB;
4401 elfNN_ia64_install_value (hit_addr, value, r_type);
4402 r = elfNN_ia64_install_value (hit_addr + 8, gp_val, r_type);
4403 break;
4404
4405 case R_IA64_TPREL14:
4406 case R_IA64_TPREL22:
4407 case R_IA64_TPREL64I:
4408 value -= elfNN_ia64_tprel_base (info);
4409 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4410 break;
4411
4412 case R_IA64_DTPREL14:
4413 case R_IA64_DTPREL22:
4414 case R_IA64_DTPREL64I:
4415 case R_IA64_DTPREL64LSB:
4416 case R_IA64_DTPREL64MSB:
4417 value -= elfNN_ia64_dtprel_base (info);
4418 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4419 break;
4420
4421 case R_IA64_LTOFF_TPREL22:
4422 case R_IA64_LTOFF_DTPMOD22:
4423 case R_IA64_LTOFF_DTPREL22:
4424 {
4425 int got_r_type;
4426 long dynindx = h ? h->dynindx : -1;
4427 bfd_vma r_addend = rel->r_addend;
4428
4429 switch (r_type)
4430 {
4431 default:
4432 case R_IA64_LTOFF_TPREL22:
4433 if (!dynamic_symbol_p)
4434 {
4435 if (!info->shared)
4436 value -= elfNN_ia64_tprel_base (info);
4437 else
4438 {
4439 r_addend += value - elfNN_ia64_dtprel_base (info);
4440 dynindx = 0;
4441 }
4442 }
4443 got_r_type = R_IA64_TPREL64LSB;
4444 break;
4445 case R_IA64_LTOFF_DTPMOD22:
4446 if (!dynamic_symbol_p && !info->shared)
4447 value = 1;
4448 got_r_type = R_IA64_DTPMOD64LSB;
4449 break;
4450 case R_IA64_LTOFF_DTPREL22:
4451 if (!dynamic_symbol_p)
4452 value -= elfNN_ia64_dtprel_base (info);
4453 got_r_type = R_IA64_DTPREL64LSB;
4454 break;
4455 }
4456 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4457 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4458 value, got_r_type);
4459 value -= gp_val;
4460 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4461 }
4462 break;
4463
4464 default:
4465 r = bfd_reloc_notsupported;
4466 break;
4467 }
4468
4469 switch (r)
4470 {
4471 case bfd_reloc_ok:
4472 break;
4473
4474 case bfd_reloc_undefined:
4475 /* This can happen for global table relative relocs if
4476 __gp is undefined. This is a panic situation so we
4477 don't try to continue. */
4478 (*info->callbacks->undefined_symbol)
4479 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4480 return FALSE;
4481
4482 case bfd_reloc_notsupported:
4483 {
4484 const char *name;
4485
4486 if (h)
4487 name = h->root.root.string;
4488 else
4489 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4490 sym_sec);
4491 if (!(*info->callbacks->warning) (info, _("unsupported reloc"),
4492 name, input_bfd,
4493 input_section, rel->r_offset))
4494 return FALSE;
4495 ret_val = FALSE;
4496 }
4497 break;
4498
4499 case bfd_reloc_dangerous:
4500 case bfd_reloc_outofrange:
4501 case bfd_reloc_overflow:
4502 default:
4503 {
4504 const char *name;
4505
4506 if (h)
4507 name = h->root.root.string;
4508 else
4509 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4510 sym_sec);
4511
4512 switch (r_type)
4513 {
4514 case R_IA64_PCREL21B:
4515 case R_IA64_PCREL21BI:
4516 case R_IA64_PCREL21M:
4517 case R_IA64_PCREL21F:
4518 if (is_elf_hash_table (info->hash))
4519 {
4520 /* Relaxtion is always performed for ELF output.
4521 Overflow failures for those relocations mean
4522 that the section is too big to relax. */
4523 (*_bfd_error_handler)
4524 (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."),
4525 input_bfd, input_section, howto->name, name,
4526 rel->r_offset, input_section->size);
4527 break;
4528 }
4529 default:
4530 if (!(*info->callbacks->reloc_overflow) (info,
4531 &h->root,
4532 name,
4533 howto->name,
4534 (bfd_vma) 0,
4535 input_bfd,
4536 input_section,
4537 rel->r_offset))
4538 return FALSE;
4539 break;
4540 }
4541
4542 ret_val = FALSE;
4543 }
4544 break;
4545 }
4546 }
4547
4548 return ret_val;
4549 }
4550
4551 static bfd_boolean
4552 elfNN_ia64_finish_dynamic_symbol (output_bfd, info, h, sym)
4553 bfd *output_bfd;
4554 struct bfd_link_info *info;
4555 struct elf_link_hash_entry *h;
4556 Elf_Internal_Sym *sym;
4557 {
4558 struct elfNN_ia64_link_hash_table *ia64_info;
4559 struct elfNN_ia64_dyn_sym_info *dyn_i;
4560
4561 ia64_info = elfNN_ia64_hash_table (info);
4562 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4563
4564 /* Fill in the PLT data, if required. */
4565 if (dyn_i && dyn_i->want_plt)
4566 {
4567 Elf_Internal_Rela outrel;
4568 bfd_byte *loc;
4569 asection *plt_sec;
4570 bfd_vma plt_addr, pltoff_addr, gp_val, index;
4571
4572 gp_val = _bfd_get_gp_value (output_bfd);
4573
4574 /* Initialize the minimal PLT entry. */
4575
4576 index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4577 plt_sec = ia64_info->plt_sec;
4578 loc = plt_sec->contents + dyn_i->plt_offset;
4579
4580 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4581 elfNN_ia64_install_value (loc, index, R_IA64_IMM22);
4582 elfNN_ia64_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4583
4584 plt_addr = (plt_sec->output_section->vma
4585 + plt_sec->output_offset
4586 + dyn_i->plt_offset);
4587 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4588
4589 /* Initialize the FULL PLT entry, if needed. */
4590 if (dyn_i->want_plt2)
4591 {
4592 loc = plt_sec->contents + dyn_i->plt2_offset;
4593
4594 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4595 elfNN_ia64_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4596
4597 /* Mark the symbol as undefined, rather than as defined in the
4598 plt section. Leave the value alone. */
4599 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4600 first place. But perhaps elflink.c did some for us. */
4601 if (!h->def_regular)
4602 sym->st_shndx = SHN_UNDEF;
4603 }
4604
4605 /* Create the dynamic relocation. */
4606 outrel.r_offset = pltoff_addr;
4607 if (bfd_little_endian (output_bfd))
4608 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4609 else
4610 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4611 outrel.r_addend = 0;
4612
4613 /* This is fun. In the .IA_64.pltoff section, we've got entries
4614 that correspond both to real PLT entries, and those that
4615 happened to resolve to local symbols but need to be created
4616 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4617 relocations for the real PLT should come at the end of the
4618 section, so that they can be indexed by plt entry at runtime.
4619
4620 We emitted all of the relocations for the non-PLT @pltoff
4621 entries during relocate_section. So we can consider the
4622 existing sec->reloc_count to be the base of the array of
4623 PLT relocations. */
4624
4625 loc = ia64_info->rel_pltoff_sec->contents;
4626 loc += ((ia64_info->rel_pltoff_sec->reloc_count + index)
4627 * sizeof (ElfNN_External_Rela));
4628 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4629 }
4630
4631 /* Mark some specially defined symbols as absolute. */
4632 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4633 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
4634 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
4635 sym->st_shndx = SHN_ABS;
4636
4637 return TRUE;
4638 }
4639
4640 static bfd_boolean
4641 elfNN_ia64_finish_dynamic_sections (abfd, info)
4642 bfd *abfd;
4643 struct bfd_link_info *info;
4644 {
4645 struct elfNN_ia64_link_hash_table *ia64_info;
4646 bfd *dynobj;
4647
4648 ia64_info = elfNN_ia64_hash_table (info);
4649 dynobj = ia64_info->root.dynobj;
4650
4651 if (elf_hash_table (info)->dynamic_sections_created)
4652 {
4653 ElfNN_External_Dyn *dyncon, *dynconend;
4654 asection *sdyn, *sgotplt;
4655 bfd_vma gp_val;
4656
4657 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4658 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
4659 BFD_ASSERT (sdyn != NULL);
4660 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4661 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4662
4663 gp_val = _bfd_get_gp_value (abfd);
4664
4665 for (; dyncon < dynconend; dyncon++)
4666 {
4667 Elf_Internal_Dyn dyn;
4668
4669 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4670
4671 switch (dyn.d_tag)
4672 {
4673 case DT_PLTGOT:
4674 dyn.d_un.d_ptr = gp_val;
4675 break;
4676
4677 case DT_PLTRELSZ:
4678 dyn.d_un.d_val = (ia64_info->minplt_entries
4679 * sizeof (ElfNN_External_Rela));
4680 break;
4681
4682 case DT_JMPREL:
4683 /* See the comment above in finish_dynamic_symbol. */
4684 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4685 + ia64_info->rel_pltoff_sec->output_offset
4686 + (ia64_info->rel_pltoff_sec->reloc_count
4687 * sizeof (ElfNN_External_Rela)));
4688 break;
4689
4690 case DT_IA_64_PLT_RESERVE:
4691 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4692 + sgotplt->output_offset);
4693 break;
4694
4695 case DT_RELASZ:
4696 /* Do not have RELASZ include JMPREL. This makes things
4697 easier on ld.so. This is not what the rest of BFD set up. */
4698 dyn.d_un.d_val -= (ia64_info->minplt_entries
4699 * sizeof (ElfNN_External_Rela));
4700 break;
4701 }
4702
4703 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4704 }
4705
4706 /* Initialize the PLT0 entry. */
4707 if (ia64_info->plt_sec)
4708 {
4709 bfd_byte *loc = ia64_info->plt_sec->contents;
4710 bfd_vma pltres;
4711
4712 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4713
4714 pltres = (sgotplt->output_section->vma
4715 + sgotplt->output_offset
4716 - gp_val);
4717
4718 elfNN_ia64_install_value (loc+1, pltres, R_IA64_GPREL22);
4719 }
4720 }
4721
4722 return TRUE;
4723 }
4724 \f
4725 /* ELF file flag handling: */
4726
4727 /* Function to keep IA-64 specific file flags. */
4728 static bfd_boolean
4729 elfNN_ia64_set_private_flags (abfd, flags)
4730 bfd *abfd;
4731 flagword flags;
4732 {
4733 BFD_ASSERT (!elf_flags_init (abfd)
4734 || elf_elfheader (abfd)->e_flags == flags);
4735
4736 elf_elfheader (abfd)->e_flags = flags;
4737 elf_flags_init (abfd) = TRUE;
4738 return TRUE;
4739 }
4740
4741 /* Merge backend specific data from an object file to the output
4742 object file when linking. */
4743 static bfd_boolean
4744 elfNN_ia64_merge_private_bfd_data (ibfd, obfd)
4745 bfd *ibfd, *obfd;
4746 {
4747 flagword out_flags;
4748 flagword in_flags;
4749 bfd_boolean ok = TRUE;
4750
4751 /* Don't even pretend to support mixed-format linking. */
4752 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4753 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4754 return FALSE;
4755
4756 in_flags = elf_elfheader (ibfd)->e_flags;
4757 out_flags = elf_elfheader (obfd)->e_flags;
4758
4759 if (! elf_flags_init (obfd))
4760 {
4761 elf_flags_init (obfd) = TRUE;
4762 elf_elfheader (obfd)->e_flags = in_flags;
4763
4764 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4765 && bfd_get_arch_info (obfd)->the_default)
4766 {
4767 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4768 bfd_get_mach (ibfd));
4769 }
4770
4771 return TRUE;
4772 }
4773
4774 /* Check flag compatibility. */
4775 if (in_flags == out_flags)
4776 return TRUE;
4777
4778 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4779 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4780 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4781
4782 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4783 {
4784 (*_bfd_error_handler)
4785 (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4786 ibfd);
4787
4788 bfd_set_error (bfd_error_bad_value);
4789 ok = FALSE;
4790 }
4791 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4792 {
4793 (*_bfd_error_handler)
4794 (_("%B: linking big-endian files with little-endian files"),
4795 ibfd);
4796
4797 bfd_set_error (bfd_error_bad_value);
4798 ok = FALSE;
4799 }
4800 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4801 {
4802 (*_bfd_error_handler)
4803 (_("%B: linking 64-bit files with 32-bit files"),
4804 ibfd);
4805
4806 bfd_set_error (bfd_error_bad_value);
4807 ok = FALSE;
4808 }
4809 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4810 {
4811 (*_bfd_error_handler)
4812 (_("%B: linking constant-gp files with non-constant-gp files"),
4813 ibfd);
4814
4815 bfd_set_error (bfd_error_bad_value);
4816 ok = FALSE;
4817 }
4818 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4819 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4820 {
4821 (*_bfd_error_handler)
4822 (_("%B: linking auto-pic files with non-auto-pic files"),
4823 ibfd);
4824
4825 bfd_set_error (bfd_error_bad_value);
4826 ok = FALSE;
4827 }
4828
4829 return ok;
4830 }
4831
4832 static bfd_boolean
4833 elfNN_ia64_print_private_bfd_data (abfd, ptr)
4834 bfd *abfd;
4835 PTR ptr;
4836 {
4837 FILE *file = (FILE *) ptr;
4838 flagword flags = elf_elfheader (abfd)->e_flags;
4839
4840 BFD_ASSERT (abfd != NULL && ptr != NULL);
4841
4842 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4843 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4844 (flags & EF_IA_64_EXT) ? "EXT, " : "",
4845 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4846 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4847 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4848 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4849 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4850 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4851
4852 _bfd_elf_print_private_bfd_data (abfd, ptr);
4853 return TRUE;
4854 }
4855
4856 static enum elf_reloc_type_class
4857 elfNN_ia64_reloc_type_class (rela)
4858 const Elf_Internal_Rela *rela;
4859 {
4860 switch ((int) ELFNN_R_TYPE (rela->r_info))
4861 {
4862 case R_IA64_REL32MSB:
4863 case R_IA64_REL32LSB:
4864 case R_IA64_REL64MSB:
4865 case R_IA64_REL64LSB:
4866 return reloc_class_relative;
4867 case R_IA64_IPLTMSB:
4868 case R_IA64_IPLTLSB:
4869 return reloc_class_plt;
4870 case R_IA64_COPY:
4871 return reloc_class_copy;
4872 default:
4873 return reloc_class_normal;
4874 }
4875 }
4876
4877 static struct bfd_elf_special_section const elfNN_ia64_special_sections[]=
4878 {
4879 { ".sbss", 5, -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4880 { ".sdata", 6, -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4881 { NULL, 0, 0, 0, 0 }
4882 };
4883
4884 static bfd_boolean
4885 elfNN_ia64_object_p (bfd *abfd)
4886 {
4887 asection *sec;
4888 asection *group, *unwi, *unw;
4889 flagword flags;
4890 const char *name;
4891 char *unwi_name, *unw_name;
4892 bfd_size_type amt;
4893
4894 if (abfd->flags & DYNAMIC)
4895 return TRUE;
4896
4897 /* Flags for fake group section. */
4898 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
4899 | SEC_EXCLUDE);
4900
4901 /* We add a fake section group for each .gnu.linkonce.t.* section,
4902 which isn't in a section group, and its unwind sections. */
4903 for (sec = abfd->sections; sec != NULL; sec = sec->next)
4904 {
4905 if (elf_sec_group (sec) == NULL
4906 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
4907 == (SEC_LINK_ONCE | SEC_CODE))
4908 && strncmp (sec->name, ".gnu.linkonce.t.", 16) == 0)
4909 {
4910 name = sec->name + 16;
4911
4912 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
4913 unwi_name = bfd_alloc (abfd, amt);
4914 if (!unwi_name)
4915 return FALSE;
4916
4917 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
4918 unwi = bfd_get_section_by_name (abfd, unwi_name);
4919
4920 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
4921 unw_name = bfd_alloc (abfd, amt);
4922 if (!unw_name)
4923 return FALSE;
4924
4925 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
4926 unw = bfd_get_section_by_name (abfd, unw_name);
4927
4928 /* We need to create a fake group section for it and its
4929 unwind sections. */
4930 group = bfd_make_section_anyway (abfd, name);
4931 if (group == NULL
4932 || ! bfd_set_section_flags (abfd, group, flags))
4933 return FALSE;
4934
4935 /* Move the fake group section to the beginning. */
4936 bfd_section_list_remove (abfd, group);
4937 bfd_section_list_prepend (abfd, group);
4938
4939 elf_next_in_group (group) = sec;
4940
4941 elf_group_name (sec) = name;
4942 elf_next_in_group (sec) = sec;
4943 elf_sec_group (sec) = group;
4944
4945 if (unwi)
4946 {
4947 elf_group_name (unwi) = name;
4948 elf_next_in_group (unwi) = sec;
4949 elf_next_in_group (sec) = unwi;
4950 elf_sec_group (unwi) = group;
4951 }
4952
4953 if (unw)
4954 {
4955 elf_group_name (unw) = name;
4956 if (unwi)
4957 {
4958 elf_next_in_group (unw) = elf_next_in_group (unwi);
4959 elf_next_in_group (unwi) = unw;
4960 }
4961 else
4962 {
4963 elf_next_in_group (unw) = sec;
4964 elf_next_in_group (sec) = unw;
4965 }
4966 elf_sec_group (unw) = group;
4967 }
4968
4969 /* Fake SHT_GROUP section header. */
4970 elf_section_data (group)->this_hdr.bfd_section = group;
4971 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
4972 }
4973 }
4974 return TRUE;
4975 }
4976
4977 static bfd_boolean
4978 elfNN_ia64_hpux_vec (const bfd_target *vec)
4979 {
4980 extern const bfd_target bfd_elfNN_ia64_hpux_big_vec;
4981 return (vec == & bfd_elfNN_ia64_hpux_big_vec);
4982 }
4983
4984 static void
4985 elfNN_hpux_post_process_headers (abfd, info)
4986 bfd *abfd;
4987 struct bfd_link_info *info ATTRIBUTE_UNUSED;
4988 {
4989 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4990
4991 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
4992 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4993 }
4994
4995 bfd_boolean
4996 elfNN_hpux_backend_section_from_bfd_section (abfd, sec, retval)
4997 bfd *abfd ATTRIBUTE_UNUSED;
4998 asection *sec;
4999 int *retval;
5000 {
5001 if (bfd_is_com_section (sec))
5002 {
5003 *retval = SHN_IA_64_ANSI_COMMON;
5004 return TRUE;
5005 }
5006 return FALSE;
5007 }
5008
5009 static void
5010 elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
5011 asymbol *asym)
5012 {
5013 elf_symbol_type *elfsym = (elf_symbol_type *) asym;;
5014
5015 switch (elfsym->internal_elf_sym.st_shndx)
5016 {
5017 case SHN_IA_64_ANSI_COMMON:
5018 asym->section = bfd_com_section_ptr;
5019 asym->value = elfsym->internal_elf_sym.st_size;
5020 asym->flags &= ~BSF_GLOBAL;
5021 break;
5022 }
5023 }
5024
5025 \f
5026 #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec
5027 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
5028 #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec
5029 #define TARGET_BIG_NAME "elfNN-ia64-big"
5030 #define ELF_ARCH bfd_arch_ia64
5031 #define ELF_MACHINE_CODE EM_IA_64
5032 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
5033 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
5034 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
5035
5036 #define elf_backend_section_from_shdr \
5037 elfNN_ia64_section_from_shdr
5038 #define elf_backend_section_flags \
5039 elfNN_ia64_section_flags
5040 #define elf_backend_fake_sections \
5041 elfNN_ia64_fake_sections
5042 #define elf_backend_final_write_processing \
5043 elfNN_ia64_final_write_processing
5044 #define elf_backend_add_symbol_hook \
5045 elfNN_ia64_add_symbol_hook
5046 #define elf_backend_additional_program_headers \
5047 elfNN_ia64_additional_program_headers
5048 #define elf_backend_modify_segment_map \
5049 elfNN_ia64_modify_segment_map
5050 #define elf_info_to_howto \
5051 elfNN_ia64_info_to_howto
5052
5053 #define bfd_elfNN_bfd_reloc_type_lookup \
5054 elfNN_ia64_reloc_type_lookup
5055 #define bfd_elfNN_bfd_is_local_label_name \
5056 elfNN_ia64_is_local_label_name
5057 #define bfd_elfNN_bfd_relax_section \
5058 elfNN_ia64_relax_section
5059
5060 #define elf_backend_object_p \
5061 elfNN_ia64_object_p
5062
5063 /* Stuff for the BFD linker: */
5064 #define bfd_elfNN_bfd_link_hash_table_create \
5065 elfNN_ia64_hash_table_create
5066 #define bfd_elfNN_bfd_link_hash_table_free \
5067 elfNN_ia64_hash_table_free
5068 #define elf_backend_create_dynamic_sections \
5069 elfNN_ia64_create_dynamic_sections
5070 #define elf_backend_check_relocs \
5071 elfNN_ia64_check_relocs
5072 #define elf_backend_adjust_dynamic_symbol \
5073 elfNN_ia64_adjust_dynamic_symbol
5074 #define elf_backend_size_dynamic_sections \
5075 elfNN_ia64_size_dynamic_sections
5076 #define elf_backend_relocate_section \
5077 elfNN_ia64_relocate_section
5078 #define elf_backend_finish_dynamic_symbol \
5079 elfNN_ia64_finish_dynamic_symbol
5080 #define elf_backend_finish_dynamic_sections \
5081 elfNN_ia64_finish_dynamic_sections
5082 #define bfd_elfNN_bfd_final_link \
5083 elfNN_ia64_final_link
5084
5085 #define bfd_elfNN_bfd_merge_private_bfd_data \
5086 elfNN_ia64_merge_private_bfd_data
5087 #define bfd_elfNN_bfd_set_private_flags \
5088 elfNN_ia64_set_private_flags
5089 #define bfd_elfNN_bfd_print_private_bfd_data \
5090 elfNN_ia64_print_private_bfd_data
5091
5092 #define elf_backend_plt_readonly 1
5093 #define elf_backend_want_plt_sym 0
5094 #define elf_backend_plt_alignment 5
5095 #define elf_backend_got_header_size 0
5096 #define elf_backend_want_got_plt 1
5097 #define elf_backend_may_use_rel_p 1
5098 #define elf_backend_may_use_rela_p 1
5099 #define elf_backend_default_use_rela_p 1
5100 #define elf_backend_want_dynbss 0
5101 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5102 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5103 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5104 #define elf_backend_rela_normal 1
5105 #define elf_backend_special_sections elfNN_ia64_special_sections
5106
5107 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5108 SHF_LINK_ORDER. But it doesn't set theh sh_link or sh_info fields.
5109 We don't want to flood users with so many error messages. We turn
5110 off the warning for now. It will be turned on later when the Intel
5111 compiler is fixed. */
5112 #define elf_backend_link_order_error_handler NULL
5113
5114 #include "elfNN-target.h"
5115
5116 /* HPUX-specific vectors. */
5117
5118 #undef TARGET_LITTLE_SYM
5119 #undef TARGET_LITTLE_NAME
5120 #undef TARGET_BIG_SYM
5121 #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec
5122 #undef TARGET_BIG_NAME
5123 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5124
5125 /* These are HP-UX specific functions. */
5126
5127 #undef elf_backend_post_process_headers
5128 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5129
5130 #undef elf_backend_section_from_bfd_section
5131 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5132
5133 #undef elf_backend_symbol_processing
5134 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5135
5136 #undef elf_backend_want_p_paddr_set_to_zero
5137 #define elf_backend_want_p_paddr_set_to_zero 1
5138
5139 #undef ELF_MAXPAGESIZE
5140 #define ELF_MAXPAGESIZE 0x1000 /* 1K */
5141
5142 #undef elfNN_bed
5143 #define elfNN_bed elfNN_ia64_hpux_bed
5144
5145 #include "elfNN-target.h"
5146
5147 #undef elf_backend_want_p_paddr_set_to_zero
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