* elfxx-ia64.c (elfNN_ia64_new_elf_hash_entry): Don't clear
[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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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_from_shdr
187 PARAMS ((bfd *, Elf_Internal_Shdr *, const char *));
188 static bfd_boolean elfNN_ia64_section_flags
189 PARAMS ((flagword *, const Elf_Internal_Shdr *));
190 static bfd_boolean elfNN_ia64_fake_sections
191 PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec));
192 static void elfNN_ia64_final_write_processing
193 PARAMS ((bfd *abfd, bfd_boolean linker));
194 static bfd_boolean elfNN_ia64_add_symbol_hook
195 PARAMS ((bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *sym,
196 const char **namep, flagword *flagsp, asection **secp,
197 bfd_vma *valp));
198 static int elfNN_ia64_additional_program_headers
199 PARAMS ((bfd *abfd));
200 static bfd_boolean elfNN_ia64_modify_segment_map
201 PARAMS ((bfd *, struct bfd_link_info *));
202 static bfd_boolean elfNN_ia64_is_local_label_name
203 PARAMS ((bfd *abfd, const char *name));
204 static bfd_boolean elfNN_ia64_dynamic_symbol_p
205 PARAMS ((struct elf_link_hash_entry *h, struct bfd_link_info *info, int));
206 static struct bfd_hash_entry *elfNN_ia64_new_elf_hash_entry
207 PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
208 const char *string));
209 static void elfNN_ia64_hash_copy_indirect
210 PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
211 struct elf_link_hash_entry *));
212 static void elfNN_ia64_hash_hide_symbol
213 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
214 static hashval_t elfNN_ia64_local_htab_hash PARAMS ((const void *));
215 static int elfNN_ia64_local_htab_eq PARAMS ((const void *ptr1,
216 const void *ptr2));
217 static struct bfd_link_hash_table *elfNN_ia64_hash_table_create
218 PARAMS ((bfd *abfd));
219 static void elfNN_ia64_hash_table_free
220 PARAMS ((struct bfd_link_hash_table *hash));
221 static bfd_boolean elfNN_ia64_global_dyn_sym_thunk
222 PARAMS ((struct bfd_hash_entry *, PTR));
223 static int elfNN_ia64_local_dyn_sym_thunk
224 PARAMS ((void **, PTR));
225 static void elfNN_ia64_dyn_sym_traverse
226 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
227 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR),
228 PTR info));
229 static bfd_boolean elfNN_ia64_create_dynamic_sections
230 PARAMS ((bfd *abfd, struct bfd_link_info *info));
231 static struct elfNN_ia64_local_hash_entry * get_local_sym_hash
232 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
233 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create));
234 static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
235 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
236 struct elf_link_hash_entry *h,
237 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create));
238 static asection *get_got
239 PARAMS ((bfd *abfd, struct bfd_link_info *info,
240 struct elfNN_ia64_link_hash_table *ia64_info));
241 static asection *get_fptr
242 PARAMS ((bfd *abfd, struct bfd_link_info *info,
243 struct elfNN_ia64_link_hash_table *ia64_info));
244 static asection *get_pltoff
245 PARAMS ((bfd *abfd, struct bfd_link_info *info,
246 struct elfNN_ia64_link_hash_table *ia64_info));
247 static asection *get_reloc_section
248 PARAMS ((bfd *abfd, struct elfNN_ia64_link_hash_table *ia64_info,
249 asection *sec, bfd_boolean create));
250 static bfd_boolean elfNN_ia64_check_relocs
251 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
252 const Elf_Internal_Rela *relocs));
253 static bfd_boolean elfNN_ia64_adjust_dynamic_symbol
254 PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
255 static long global_sym_index
256 PARAMS ((struct elf_link_hash_entry *h));
257 static bfd_boolean allocate_fptr
258 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
259 static bfd_boolean allocate_global_data_got
260 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
261 static bfd_boolean allocate_global_fptr_got
262 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
263 static bfd_boolean allocate_local_got
264 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
265 static bfd_boolean allocate_pltoff_entries
266 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
267 static bfd_boolean allocate_plt_entries
268 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
269 static bfd_boolean allocate_plt2_entries
270 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
271 static bfd_boolean allocate_dynrel_entries
272 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
273 static bfd_boolean elfNN_ia64_size_dynamic_sections
274 PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
275 static bfd_reloc_status_type elfNN_ia64_install_value
276 PARAMS ((bfd_byte *hit_addr, bfd_vma val, unsigned int r_type));
277 static void elfNN_ia64_install_dyn_reloc
278 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
279 asection *srel, bfd_vma offset, unsigned int type,
280 long dynindx, bfd_vma addend));
281 static bfd_vma set_got_entry
282 PARAMS ((bfd *abfd, struct bfd_link_info *info,
283 struct elfNN_ia64_dyn_sym_info *dyn_i, long dynindx,
284 bfd_vma addend, bfd_vma value, unsigned int dyn_r_type));
285 static bfd_vma set_fptr_entry
286 PARAMS ((bfd *abfd, struct bfd_link_info *info,
287 struct elfNN_ia64_dyn_sym_info *dyn_i,
288 bfd_vma value));
289 static bfd_vma set_pltoff_entry
290 PARAMS ((bfd *abfd, struct bfd_link_info *info,
291 struct elfNN_ia64_dyn_sym_info *dyn_i,
292 bfd_vma value, bfd_boolean));
293 static bfd_vma elfNN_ia64_tprel_base
294 PARAMS ((struct bfd_link_info *info));
295 static bfd_vma elfNN_ia64_dtprel_base
296 PARAMS ((struct bfd_link_info *info));
297 static int elfNN_ia64_unwind_entry_compare
298 PARAMS ((const PTR, const PTR));
299 static bfd_boolean elfNN_ia64_choose_gp
300 PARAMS ((bfd *abfd, struct bfd_link_info *info));
301 static bfd_boolean elfNN_ia64_final_link
302 PARAMS ((bfd *abfd, struct bfd_link_info *info));
303 static bfd_boolean elfNN_ia64_relocate_section
304 PARAMS ((bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd,
305 asection *input_section, bfd_byte *contents,
306 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
307 asection **local_sections));
308 static bfd_boolean elfNN_ia64_finish_dynamic_symbol
309 PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
310 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
311 static bfd_boolean elfNN_ia64_finish_dynamic_sections
312 PARAMS ((bfd *abfd, struct bfd_link_info *info));
313 static bfd_boolean elfNN_ia64_set_private_flags
314 PARAMS ((bfd *abfd, flagword flags));
315 static bfd_boolean elfNN_ia64_merge_private_bfd_data
316 PARAMS ((bfd *ibfd, bfd *obfd));
317 static bfd_boolean elfNN_ia64_print_private_bfd_data
318 PARAMS ((bfd *abfd, PTR ptr));
319 static enum elf_reloc_type_class elfNN_ia64_reloc_type_class
320 PARAMS ((const Elf_Internal_Rela *));
321 static bfd_boolean elfNN_ia64_hpux_vec
322 PARAMS ((const bfd_target *vec));
323 static void elfNN_hpux_post_process_headers
324 PARAMS ((bfd *abfd, struct bfd_link_info *info));
325 bfd_boolean elfNN_hpux_backend_section_from_bfd_section
326 PARAMS ((bfd *abfd, asection *sec, int *retval));
327 \f
328 /* ia64-specific relocation. */
329
330 /* Perform a relocation. Not much to do here as all the hard work is
331 done in elfNN_ia64_final_link_relocate. */
332 static bfd_reloc_status_type
333 elfNN_ia64_reloc (abfd, reloc, sym, data, input_section,
334 output_bfd, error_message)
335 bfd *abfd ATTRIBUTE_UNUSED;
336 arelent *reloc;
337 asymbol *sym ATTRIBUTE_UNUSED;
338 PTR data ATTRIBUTE_UNUSED;
339 asection *input_section;
340 bfd *output_bfd;
341 char **error_message;
342 {
343 if (output_bfd)
344 {
345 reloc->address += input_section->output_offset;
346 return bfd_reloc_ok;
347 }
348
349 if (input_section->flags & SEC_DEBUGGING)
350 return bfd_reloc_continue;
351
352 *error_message = "Unsupported call to elfNN_ia64_reloc";
353 return bfd_reloc_notsupported;
354 }
355
356 #define IA64_HOWTO(TYPE, NAME, SIZE, PCREL, IN) \
357 HOWTO (TYPE, 0, SIZE, 0, PCREL, 0, complain_overflow_signed, \
358 elfNN_ia64_reloc, NAME, FALSE, 0, -1, IN)
359
360 /* This table has to be sorted according to increasing number of the
361 TYPE field. */
362 static reloc_howto_type ia64_howto_table[] =
363 {
364 IA64_HOWTO (R_IA64_NONE, "NONE", 0, FALSE, TRUE),
365
366 IA64_HOWTO (R_IA64_IMM14, "IMM14", 0, FALSE, TRUE),
367 IA64_HOWTO (R_IA64_IMM22, "IMM22", 0, FALSE, TRUE),
368 IA64_HOWTO (R_IA64_IMM64, "IMM64", 0, FALSE, TRUE),
369 IA64_HOWTO (R_IA64_DIR32MSB, "DIR32MSB", 2, FALSE, TRUE),
370 IA64_HOWTO (R_IA64_DIR32LSB, "DIR32LSB", 2, FALSE, TRUE),
371 IA64_HOWTO (R_IA64_DIR64MSB, "DIR64MSB", 4, FALSE, TRUE),
372 IA64_HOWTO (R_IA64_DIR64LSB, "DIR64LSB", 4, FALSE, TRUE),
373
374 IA64_HOWTO (R_IA64_GPREL22, "GPREL22", 0, FALSE, TRUE),
375 IA64_HOWTO (R_IA64_GPREL64I, "GPREL64I", 0, FALSE, TRUE),
376 IA64_HOWTO (R_IA64_GPREL32MSB, "GPREL32MSB", 2, FALSE, TRUE),
377 IA64_HOWTO (R_IA64_GPREL32LSB, "GPREL32LSB", 2, FALSE, TRUE),
378 IA64_HOWTO (R_IA64_GPREL64MSB, "GPREL64MSB", 4, FALSE, TRUE),
379 IA64_HOWTO (R_IA64_GPREL64LSB, "GPREL64LSB", 4, FALSE, TRUE),
380
381 IA64_HOWTO (R_IA64_LTOFF22, "LTOFF22", 0, FALSE, TRUE),
382 IA64_HOWTO (R_IA64_LTOFF64I, "LTOFF64I", 0, FALSE, TRUE),
383
384 IA64_HOWTO (R_IA64_PLTOFF22, "PLTOFF22", 0, FALSE, TRUE),
385 IA64_HOWTO (R_IA64_PLTOFF64I, "PLTOFF64I", 0, FALSE, TRUE),
386 IA64_HOWTO (R_IA64_PLTOFF64MSB, "PLTOFF64MSB", 4, FALSE, TRUE),
387 IA64_HOWTO (R_IA64_PLTOFF64LSB, "PLTOFF64LSB", 4, FALSE, TRUE),
388
389 IA64_HOWTO (R_IA64_FPTR64I, "FPTR64I", 0, FALSE, TRUE),
390 IA64_HOWTO (R_IA64_FPTR32MSB, "FPTR32MSB", 2, FALSE, TRUE),
391 IA64_HOWTO (R_IA64_FPTR32LSB, "FPTR32LSB", 2, FALSE, TRUE),
392 IA64_HOWTO (R_IA64_FPTR64MSB, "FPTR64MSB", 4, FALSE, TRUE),
393 IA64_HOWTO (R_IA64_FPTR64LSB, "FPTR64LSB", 4, FALSE, TRUE),
394
395 IA64_HOWTO (R_IA64_PCREL60B, "PCREL60B", 0, TRUE, TRUE),
396 IA64_HOWTO (R_IA64_PCREL21B, "PCREL21B", 0, TRUE, TRUE),
397 IA64_HOWTO (R_IA64_PCREL21M, "PCREL21M", 0, TRUE, TRUE),
398 IA64_HOWTO (R_IA64_PCREL21F, "PCREL21F", 0, TRUE, TRUE),
399 IA64_HOWTO (R_IA64_PCREL32MSB, "PCREL32MSB", 2, TRUE, TRUE),
400 IA64_HOWTO (R_IA64_PCREL32LSB, "PCREL32LSB", 2, TRUE, TRUE),
401 IA64_HOWTO (R_IA64_PCREL64MSB, "PCREL64MSB", 4, TRUE, TRUE),
402 IA64_HOWTO (R_IA64_PCREL64LSB, "PCREL64LSB", 4, TRUE, TRUE),
403
404 IA64_HOWTO (R_IA64_LTOFF_FPTR22, "LTOFF_FPTR22", 0, FALSE, TRUE),
405 IA64_HOWTO (R_IA64_LTOFF_FPTR64I, "LTOFF_FPTR64I", 0, FALSE, TRUE),
406 IA64_HOWTO (R_IA64_LTOFF_FPTR32MSB, "LTOFF_FPTR32MSB", 2, FALSE, TRUE),
407 IA64_HOWTO (R_IA64_LTOFF_FPTR32LSB, "LTOFF_FPTR32LSB", 2, FALSE, TRUE),
408 IA64_HOWTO (R_IA64_LTOFF_FPTR64MSB, "LTOFF_FPTR64MSB", 4, FALSE, TRUE),
409 IA64_HOWTO (R_IA64_LTOFF_FPTR64LSB, "LTOFF_FPTR64LSB", 4, FALSE, TRUE),
410
411 IA64_HOWTO (R_IA64_SEGREL32MSB, "SEGREL32MSB", 2, FALSE, TRUE),
412 IA64_HOWTO (R_IA64_SEGREL32LSB, "SEGREL32LSB", 2, FALSE, TRUE),
413 IA64_HOWTO (R_IA64_SEGREL64MSB, "SEGREL64MSB", 4, FALSE, TRUE),
414 IA64_HOWTO (R_IA64_SEGREL64LSB, "SEGREL64LSB", 4, FALSE, TRUE),
415
416 IA64_HOWTO (R_IA64_SECREL32MSB, "SECREL32MSB", 2, FALSE, TRUE),
417 IA64_HOWTO (R_IA64_SECREL32LSB, "SECREL32LSB", 2, FALSE, TRUE),
418 IA64_HOWTO (R_IA64_SECREL64MSB, "SECREL64MSB", 4, FALSE, TRUE),
419 IA64_HOWTO (R_IA64_SECREL64LSB, "SECREL64LSB", 4, FALSE, TRUE),
420
421 IA64_HOWTO (R_IA64_REL32MSB, "REL32MSB", 2, FALSE, TRUE),
422 IA64_HOWTO (R_IA64_REL32LSB, "REL32LSB", 2, FALSE, TRUE),
423 IA64_HOWTO (R_IA64_REL64MSB, "REL64MSB", 4, FALSE, TRUE),
424 IA64_HOWTO (R_IA64_REL64LSB, "REL64LSB", 4, FALSE, TRUE),
425
426 IA64_HOWTO (R_IA64_LTV32MSB, "LTV32MSB", 2, FALSE, TRUE),
427 IA64_HOWTO (R_IA64_LTV32LSB, "LTV32LSB", 2, FALSE, TRUE),
428 IA64_HOWTO (R_IA64_LTV64MSB, "LTV64MSB", 4, FALSE, TRUE),
429 IA64_HOWTO (R_IA64_LTV64LSB, "LTV64LSB", 4, FALSE, TRUE),
430
431 IA64_HOWTO (R_IA64_PCREL21BI, "PCREL21BI", 0, TRUE, TRUE),
432 IA64_HOWTO (R_IA64_PCREL22, "PCREL22", 0, TRUE, TRUE),
433 IA64_HOWTO (R_IA64_PCREL64I, "PCREL64I", 0, TRUE, TRUE),
434
435 IA64_HOWTO (R_IA64_IPLTMSB, "IPLTMSB", 4, FALSE, TRUE),
436 IA64_HOWTO (R_IA64_IPLTLSB, "IPLTLSB", 4, FALSE, TRUE),
437 IA64_HOWTO (R_IA64_COPY, "COPY", 4, FALSE, TRUE),
438 IA64_HOWTO (R_IA64_LTOFF22X, "LTOFF22X", 0, FALSE, TRUE),
439 IA64_HOWTO (R_IA64_LDXMOV, "LDXMOV", 0, FALSE, TRUE),
440
441 IA64_HOWTO (R_IA64_TPREL14, "TPREL14", 0, FALSE, FALSE),
442 IA64_HOWTO (R_IA64_TPREL22, "TPREL22", 0, FALSE, FALSE),
443 IA64_HOWTO (R_IA64_TPREL64I, "TPREL64I", 0, FALSE, FALSE),
444 IA64_HOWTO (R_IA64_TPREL64MSB, "TPREL64MSB", 4, FALSE, FALSE),
445 IA64_HOWTO (R_IA64_TPREL64LSB, "TPREL64LSB", 4, FALSE, FALSE),
446 IA64_HOWTO (R_IA64_LTOFF_TPREL22, "LTOFF_TPREL22", 0, FALSE, FALSE),
447
448 IA64_HOWTO (R_IA64_DTPMOD64MSB, "TPREL64MSB", 4, FALSE, FALSE),
449 IA64_HOWTO (R_IA64_DTPMOD64LSB, "TPREL64LSB", 4, FALSE, FALSE),
450 IA64_HOWTO (R_IA64_LTOFF_DTPMOD22, "LTOFF_DTPMOD22", 0, FALSE, FALSE),
451
452 IA64_HOWTO (R_IA64_DTPREL14, "DTPREL14", 0, FALSE, FALSE),
453 IA64_HOWTO (R_IA64_DTPREL22, "DTPREL22", 0, FALSE, FALSE),
454 IA64_HOWTO (R_IA64_DTPREL64I, "DTPREL64I", 0, FALSE, FALSE),
455 IA64_HOWTO (R_IA64_DTPREL32MSB, "DTPREL32MSB", 2, FALSE, FALSE),
456 IA64_HOWTO (R_IA64_DTPREL32LSB, "DTPREL32LSB", 2, FALSE, FALSE),
457 IA64_HOWTO (R_IA64_DTPREL64MSB, "DTPREL64MSB", 4, FALSE, FALSE),
458 IA64_HOWTO (R_IA64_DTPREL64LSB, "DTPREL64LSB", 4, FALSE, FALSE),
459 IA64_HOWTO (R_IA64_LTOFF_DTPREL22, "LTOFF_DTPREL22", 0, FALSE, FALSE),
460 };
461
462 static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1];
463
464 /* Given a BFD reloc type, return the matching HOWTO structure. */
465
466 static reloc_howto_type *
467 lookup_howto (rtype)
468 unsigned int rtype;
469 {
470 static int inited = 0;
471 int i;
472
473 if (!inited)
474 {
475 inited = 1;
476
477 memset (elf_code_to_howto_index, 0xff, sizeof (elf_code_to_howto_index));
478 for (i = 0; i < NELEMS (ia64_howto_table); ++i)
479 elf_code_to_howto_index[ia64_howto_table[i].type] = i;
480 }
481
482 BFD_ASSERT (rtype <= R_IA64_MAX_RELOC_CODE);
483 i = elf_code_to_howto_index[rtype];
484 if (i >= NELEMS (ia64_howto_table))
485 return 0;
486 return ia64_howto_table + i;
487 }
488
489 static reloc_howto_type*
490 elfNN_ia64_reloc_type_lookup (abfd, bfd_code)
491 bfd *abfd ATTRIBUTE_UNUSED;
492 bfd_reloc_code_real_type bfd_code;
493 {
494 unsigned int rtype;
495
496 switch (bfd_code)
497 {
498 case BFD_RELOC_NONE: rtype = R_IA64_NONE; break;
499
500 case BFD_RELOC_IA64_IMM14: rtype = R_IA64_IMM14; break;
501 case BFD_RELOC_IA64_IMM22: rtype = R_IA64_IMM22; break;
502 case BFD_RELOC_IA64_IMM64: rtype = R_IA64_IMM64; break;
503
504 case BFD_RELOC_IA64_DIR32MSB: rtype = R_IA64_DIR32MSB; break;
505 case BFD_RELOC_IA64_DIR32LSB: rtype = R_IA64_DIR32LSB; break;
506 case BFD_RELOC_IA64_DIR64MSB: rtype = R_IA64_DIR64MSB; break;
507 case BFD_RELOC_IA64_DIR64LSB: rtype = R_IA64_DIR64LSB; break;
508
509 case BFD_RELOC_IA64_GPREL22: rtype = R_IA64_GPREL22; break;
510 case BFD_RELOC_IA64_GPREL64I: rtype = R_IA64_GPREL64I; break;
511 case BFD_RELOC_IA64_GPREL32MSB: rtype = R_IA64_GPREL32MSB; break;
512 case BFD_RELOC_IA64_GPREL32LSB: rtype = R_IA64_GPREL32LSB; break;
513 case BFD_RELOC_IA64_GPREL64MSB: rtype = R_IA64_GPREL64MSB; break;
514 case BFD_RELOC_IA64_GPREL64LSB: rtype = R_IA64_GPREL64LSB; break;
515
516 case BFD_RELOC_IA64_LTOFF22: rtype = R_IA64_LTOFF22; break;
517 case BFD_RELOC_IA64_LTOFF64I: rtype = R_IA64_LTOFF64I; break;
518
519 case BFD_RELOC_IA64_PLTOFF22: rtype = R_IA64_PLTOFF22; break;
520 case BFD_RELOC_IA64_PLTOFF64I: rtype = R_IA64_PLTOFF64I; break;
521 case BFD_RELOC_IA64_PLTOFF64MSB: rtype = R_IA64_PLTOFF64MSB; break;
522 case BFD_RELOC_IA64_PLTOFF64LSB: rtype = R_IA64_PLTOFF64LSB; break;
523 case BFD_RELOC_IA64_FPTR64I: rtype = R_IA64_FPTR64I; break;
524 case BFD_RELOC_IA64_FPTR32MSB: rtype = R_IA64_FPTR32MSB; break;
525 case BFD_RELOC_IA64_FPTR32LSB: rtype = R_IA64_FPTR32LSB; break;
526 case BFD_RELOC_IA64_FPTR64MSB: rtype = R_IA64_FPTR64MSB; break;
527 case BFD_RELOC_IA64_FPTR64LSB: rtype = R_IA64_FPTR64LSB; break;
528
529 case BFD_RELOC_IA64_PCREL21B: rtype = R_IA64_PCREL21B; break;
530 case BFD_RELOC_IA64_PCREL21BI: rtype = R_IA64_PCREL21BI; break;
531 case BFD_RELOC_IA64_PCREL21M: rtype = R_IA64_PCREL21M; break;
532 case BFD_RELOC_IA64_PCREL21F: rtype = R_IA64_PCREL21F; break;
533 case BFD_RELOC_IA64_PCREL22: rtype = R_IA64_PCREL22; break;
534 case BFD_RELOC_IA64_PCREL60B: rtype = R_IA64_PCREL60B; break;
535 case BFD_RELOC_IA64_PCREL64I: rtype = R_IA64_PCREL64I; break;
536 case BFD_RELOC_IA64_PCREL32MSB: rtype = R_IA64_PCREL32MSB; break;
537 case BFD_RELOC_IA64_PCREL32LSB: rtype = R_IA64_PCREL32LSB; break;
538 case BFD_RELOC_IA64_PCREL64MSB: rtype = R_IA64_PCREL64MSB; break;
539 case BFD_RELOC_IA64_PCREL64LSB: rtype = R_IA64_PCREL64LSB; break;
540
541 case BFD_RELOC_IA64_LTOFF_FPTR22: rtype = R_IA64_LTOFF_FPTR22; break;
542 case BFD_RELOC_IA64_LTOFF_FPTR64I: rtype = R_IA64_LTOFF_FPTR64I; break;
543 case BFD_RELOC_IA64_LTOFF_FPTR32MSB: rtype = R_IA64_LTOFF_FPTR32MSB; break;
544 case BFD_RELOC_IA64_LTOFF_FPTR32LSB: rtype = R_IA64_LTOFF_FPTR32LSB; break;
545 case BFD_RELOC_IA64_LTOFF_FPTR64MSB: rtype = R_IA64_LTOFF_FPTR64MSB; break;
546 case BFD_RELOC_IA64_LTOFF_FPTR64LSB: rtype = R_IA64_LTOFF_FPTR64LSB; break;
547
548 case BFD_RELOC_IA64_SEGREL32MSB: rtype = R_IA64_SEGREL32MSB; break;
549 case BFD_RELOC_IA64_SEGREL32LSB: rtype = R_IA64_SEGREL32LSB; break;
550 case BFD_RELOC_IA64_SEGREL64MSB: rtype = R_IA64_SEGREL64MSB; break;
551 case BFD_RELOC_IA64_SEGREL64LSB: rtype = R_IA64_SEGREL64LSB; break;
552
553 case BFD_RELOC_IA64_SECREL32MSB: rtype = R_IA64_SECREL32MSB; break;
554 case BFD_RELOC_IA64_SECREL32LSB: rtype = R_IA64_SECREL32LSB; break;
555 case BFD_RELOC_IA64_SECREL64MSB: rtype = R_IA64_SECREL64MSB; break;
556 case BFD_RELOC_IA64_SECREL64LSB: rtype = R_IA64_SECREL64LSB; break;
557
558 case BFD_RELOC_IA64_REL32MSB: rtype = R_IA64_REL32MSB; break;
559 case BFD_RELOC_IA64_REL32LSB: rtype = R_IA64_REL32LSB; break;
560 case BFD_RELOC_IA64_REL64MSB: rtype = R_IA64_REL64MSB; break;
561 case BFD_RELOC_IA64_REL64LSB: rtype = R_IA64_REL64LSB; break;
562
563 case BFD_RELOC_IA64_LTV32MSB: rtype = R_IA64_LTV32MSB; break;
564 case BFD_RELOC_IA64_LTV32LSB: rtype = R_IA64_LTV32LSB; break;
565 case BFD_RELOC_IA64_LTV64MSB: rtype = R_IA64_LTV64MSB; break;
566 case BFD_RELOC_IA64_LTV64LSB: rtype = R_IA64_LTV64LSB; break;
567
568 case BFD_RELOC_IA64_IPLTMSB: rtype = R_IA64_IPLTMSB; break;
569 case BFD_RELOC_IA64_IPLTLSB: rtype = R_IA64_IPLTLSB; break;
570 case BFD_RELOC_IA64_COPY: rtype = R_IA64_COPY; break;
571 case BFD_RELOC_IA64_LTOFF22X: rtype = R_IA64_LTOFF22X; break;
572 case BFD_RELOC_IA64_LDXMOV: rtype = R_IA64_LDXMOV; break;
573
574 case BFD_RELOC_IA64_TPREL14: rtype = R_IA64_TPREL14; break;
575 case BFD_RELOC_IA64_TPREL22: rtype = R_IA64_TPREL22; break;
576 case BFD_RELOC_IA64_TPREL64I: rtype = R_IA64_TPREL64I; break;
577 case BFD_RELOC_IA64_TPREL64MSB: rtype = R_IA64_TPREL64MSB; break;
578 case BFD_RELOC_IA64_TPREL64LSB: rtype = R_IA64_TPREL64LSB; break;
579 case BFD_RELOC_IA64_LTOFF_TPREL22: rtype = R_IA64_LTOFF_TPREL22; break;
580
581 case BFD_RELOC_IA64_DTPMOD64MSB: rtype = R_IA64_DTPMOD64MSB; break;
582 case BFD_RELOC_IA64_DTPMOD64LSB: rtype = R_IA64_DTPMOD64LSB; break;
583 case BFD_RELOC_IA64_LTOFF_DTPMOD22: rtype = R_IA64_LTOFF_DTPMOD22; break;
584
585 case BFD_RELOC_IA64_DTPREL14: rtype = R_IA64_DTPREL14; break;
586 case BFD_RELOC_IA64_DTPREL22: rtype = R_IA64_DTPREL22; break;
587 case BFD_RELOC_IA64_DTPREL64I: rtype = R_IA64_DTPREL64I; break;
588 case BFD_RELOC_IA64_DTPREL32MSB: rtype = R_IA64_DTPREL32MSB; break;
589 case BFD_RELOC_IA64_DTPREL32LSB: rtype = R_IA64_DTPREL32LSB; break;
590 case BFD_RELOC_IA64_DTPREL64MSB: rtype = R_IA64_DTPREL64MSB; break;
591 case BFD_RELOC_IA64_DTPREL64LSB: rtype = R_IA64_DTPREL64LSB; break;
592 case BFD_RELOC_IA64_LTOFF_DTPREL22: rtype = R_IA64_LTOFF_DTPREL22; break;
593
594 default: return 0;
595 }
596 return lookup_howto (rtype);
597 }
598
599 /* Given a ELF reloc, return the matching HOWTO structure. */
600
601 static void
602 elfNN_ia64_info_to_howto (abfd, bfd_reloc, elf_reloc)
603 bfd *abfd ATTRIBUTE_UNUSED;
604 arelent *bfd_reloc;
605 Elf_Internal_Rela *elf_reloc;
606 {
607 bfd_reloc->howto
608 = lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info));
609 }
610 \f
611 #define PLT_HEADER_SIZE (3 * 16)
612 #define PLT_MIN_ENTRY_SIZE (1 * 16)
613 #define PLT_FULL_ENTRY_SIZE (2 * 16)
614 #define PLT_RESERVED_WORDS 3
615
616 static const bfd_byte plt_header[PLT_HEADER_SIZE] =
617 {
618 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
619 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
620 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
621 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
622 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
623 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
624 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
625 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
626 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
627 };
628
629 static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
630 {
631 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
632 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
633 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
634 };
635
636 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
637 {
638 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
639 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
640 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
641 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
642 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
643 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
644 };
645
646 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
647
648 static const bfd_byte oor_brl[16] =
649 {
650 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
651 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
652 0x00, 0x00, 0x00, 0xc0
653 };
654
655 static const bfd_byte oor_ip[48] =
656 {
657 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
658 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
659 0x01, 0x00, 0x00, 0x60,
660 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
661 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
662 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
663 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
664 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
665 0x60, 0x00, 0x80, 0x00 /* br b6;; */
666 };
667
668 static size_t oor_branch_size = sizeof (oor_brl);
669
670 void
671 bfd_elfNN_ia64_after_parse (int itanium)
672 {
673 oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
674 }
675
676 static void
677 elfNN_ia64_relax_brl (bfd_byte *contents, bfd_vma off)
678 {
679 int template;
680 bfd_byte *hit_addr;
681 bfd_vma t0, t1, i0, i1, i2;
682
683 hit_addr = (bfd_byte *) (contents + off);
684 hit_addr -= (long) hit_addr & 0x3;
685 t0 = bfd_getl64 (hit_addr);
686 t1 = bfd_getl64 (hit_addr + 8);
687
688 /* Keep the instruction in slot 0. */
689 i0 = (t0 >> 5) & 0x1ffffffffffLL;
690 /* Use nop.b for slot 1. */
691 i1 = 0x4000000000LL;
692 /* For slot 2, turn brl into br by masking out bit 40. */
693 i2 = (t1 >> 23) & 0x0ffffffffffLL;
694
695 /* Turn a MLX bundle into a MBB bundle with the same stop-bit
696 variety. */
697 template = 0x12;
698 if ((t0 & 0x1fLL) == 5)
699 template += 1;
700 t0 = (i1 << 46) | (i0 << 5) | template;
701 t1 = (i2 << 23) | (i1 >> 18);
702
703 bfd_putl64 (t0, hit_addr);
704 bfd_putl64 (t1, hit_addr + 8);
705 }
706 \f
707 /* These functions do relaxation for IA-64 ELF. */
708
709 static bfd_boolean
710 elfNN_ia64_relax_section (abfd, sec, link_info, again)
711 bfd *abfd;
712 asection *sec;
713 struct bfd_link_info *link_info;
714 bfd_boolean *again;
715 {
716 struct one_fixup
717 {
718 struct one_fixup *next;
719 asection *tsec;
720 bfd_vma toff;
721 bfd_vma trampoff;
722 };
723
724 Elf_Internal_Shdr *symtab_hdr;
725 Elf_Internal_Rela *internal_relocs;
726 Elf_Internal_Rela *irel, *irelend;
727 bfd_byte *contents;
728 Elf_Internal_Sym *isymbuf = NULL;
729 struct elfNN_ia64_link_hash_table *ia64_info;
730 struct one_fixup *fixups = NULL;
731 bfd_boolean changed_contents = FALSE;
732 bfd_boolean changed_relocs = FALSE;
733 bfd_boolean changed_got = FALSE;
734 bfd_vma gp = 0;
735
736 /* Assume we're not going to change any sizes, and we'll only need
737 one pass. */
738 *again = FALSE;
739
740 /* Don't even try to relax for non-ELF outputs. */
741 if (!is_elf_hash_table (link_info->hash))
742 return FALSE;
743
744 /* Nothing to do if there are no relocations or there is no need for
745 the relax finalize pass. */
746 if ((sec->flags & SEC_RELOC) == 0
747 || sec->reloc_count == 0
748 || (!link_info->need_relax_finalize
749 && sec->need_finalize_relax == 0))
750 return TRUE;
751
752 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
753
754 /* Load the relocations for this section. */
755 internal_relocs = (_bfd_elf_link_read_relocs
756 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
757 link_info->keep_memory));
758 if (internal_relocs == NULL)
759 return FALSE;
760
761 ia64_info = elfNN_ia64_hash_table (link_info);
762 irelend = internal_relocs + sec->reloc_count;
763
764 /* Get the section contents. */
765 if (elf_section_data (sec)->this_hdr.contents != NULL)
766 contents = elf_section_data (sec)->this_hdr.contents;
767 else
768 {
769 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
770 goto error_return;
771 }
772
773 for (irel = internal_relocs; irel < irelend; irel++)
774 {
775 unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
776 bfd_vma symaddr, reladdr, trampoff, toff, roff;
777 asection *tsec;
778 struct one_fixup *f;
779 bfd_size_type amt;
780 bfd_boolean is_branch;
781 struct elfNN_ia64_dyn_sym_info *dyn_i;
782 char symtype;
783
784 switch (r_type)
785 {
786 case R_IA64_PCREL21B:
787 case R_IA64_PCREL21BI:
788 case R_IA64_PCREL21M:
789 case R_IA64_PCREL21F:
790 /* In the finalize pass, all br relaxations are done. We can
791 skip it. */
792 if (!link_info->need_relax_finalize)
793 continue;
794 is_branch = TRUE;
795 break;
796
797 case R_IA64_PCREL60B:
798 /* We can't optimize brl to br before the finalize pass since
799 br relaxations will increase the code size. Defer it to
800 the finalize pass. */
801 if (link_info->need_relax_finalize)
802 {
803 sec->need_finalize_relax = 1;
804 continue;
805 }
806 is_branch = TRUE;
807 break;
808
809 case R_IA64_LTOFF22X:
810 case R_IA64_LDXMOV:
811 /* We can't relax ldx/mov before the finalize pass since
812 br relaxations will increase the code size. Defer it to
813 the finalize pass. */
814 if (link_info->need_relax_finalize)
815 {
816 sec->need_finalize_relax = 1;
817 continue;
818 }
819 is_branch = FALSE;
820 break;
821
822 default:
823 continue;
824 }
825
826 /* Get the value of the symbol referred to by the reloc. */
827 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
828 {
829 /* A local symbol. */
830 Elf_Internal_Sym *isym;
831
832 /* Read this BFD's local symbols. */
833 if (isymbuf == NULL)
834 {
835 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
836 if (isymbuf == NULL)
837 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
838 symtab_hdr->sh_info, 0,
839 NULL, NULL, NULL);
840 if (isymbuf == 0)
841 goto error_return;
842 }
843
844 isym = isymbuf + ELFNN_R_SYM (irel->r_info);
845 if (isym->st_shndx == SHN_UNDEF)
846 continue; /* We can't do anything with undefined symbols. */
847 else if (isym->st_shndx == SHN_ABS)
848 tsec = bfd_abs_section_ptr;
849 else if (isym->st_shndx == SHN_COMMON)
850 tsec = bfd_com_section_ptr;
851 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
852 tsec = bfd_com_section_ptr;
853 else
854 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
855
856 toff = isym->st_value;
857 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
858 symtype = ELF_ST_TYPE (isym->st_info);
859 }
860 else
861 {
862 unsigned long indx;
863 struct elf_link_hash_entry *h;
864
865 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
866 h = elf_sym_hashes (abfd)[indx];
867 BFD_ASSERT (h != NULL);
868
869 while (h->root.type == bfd_link_hash_indirect
870 || h->root.type == bfd_link_hash_warning)
871 h = (struct elf_link_hash_entry *) h->root.u.i.link;
872
873 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
874
875 /* For branches to dynamic symbols, we're interested instead
876 in a branch to the PLT entry. */
877 if (is_branch && dyn_i && dyn_i->want_plt2)
878 {
879 /* Internal branches shouldn't be sent to the PLT.
880 Leave this for now and we'll give an error later. */
881 if (r_type != R_IA64_PCREL21B)
882 continue;
883
884 tsec = ia64_info->plt_sec;
885 toff = dyn_i->plt2_offset;
886 BFD_ASSERT (irel->r_addend == 0);
887 }
888
889 /* Can't do anything else with dynamic symbols. */
890 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
891 continue;
892
893 else
894 {
895 /* We can't do anything with undefined symbols. */
896 if (h->root.type == bfd_link_hash_undefined
897 || h->root.type == bfd_link_hash_undefweak)
898 continue;
899
900 tsec = h->root.u.def.section;
901 toff = h->root.u.def.value;
902 }
903
904 symtype = h->type;
905 }
906
907 if (tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
908 {
909 /* At this stage in linking, no SEC_MERGE symbol has been
910 adjusted, so all references to such symbols need to be
911 passed through _bfd_merged_section_offset. (Later, in
912 relocate_section, all SEC_MERGE symbols *except* for
913 section symbols have been adjusted.)
914
915 gas may reduce relocations against symbols in SEC_MERGE
916 sections to a relocation against the section symbol when
917 the original addend was zero. When the reloc is against
918 a section symbol we should include the addend in the
919 offset passed to _bfd_merged_section_offset, since the
920 location of interest is the original symbol. On the
921 other hand, an access to "sym+addend" where "sym" is not
922 a section symbol should not include the addend; Such an
923 access is presumed to be an offset from "sym"; The
924 location of interest is just "sym". */
925 if (symtype == STT_SECTION)
926 toff += irel->r_addend;
927
928 toff = _bfd_merged_section_offset (abfd, &tsec,
929 elf_section_data (tsec)->sec_info,
930 toff);
931
932 if (symtype != STT_SECTION)
933 toff += irel->r_addend;
934 }
935 else
936 toff += irel->r_addend;
937
938 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
939
940 roff = irel->r_offset;
941
942 if (is_branch)
943 {
944 bfd_signed_vma offset;
945
946 reladdr = (sec->output_section->vma
947 + sec->output_offset
948 + roff) & (bfd_vma) -4;
949
950 /* If the branch is in range, no need to do anything. */
951 if ((bfd_signed_vma) (symaddr - reladdr) >= -0x1000000
952 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
953 {
954 /* If the 60-bit branch is in 21-bit range, optimize it. */
955 if (r_type == R_IA64_PCREL60B)
956 {
957 elfNN_ia64_relax_brl (contents, roff);
958
959 irel->r_info
960 = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
961 R_IA64_PCREL21B);
962
963 /* If the original relocation offset points to slot
964 1, change it to slot 2. */
965 if ((irel->r_offset & 3) == 1)
966 irel->r_offset += 1;
967 }
968
969 continue;
970 }
971 else if (r_type == R_IA64_PCREL60B)
972 continue;
973
974 /* We can't put a trampoline in a .init/.fini section. Issue
975 an error. */
976 if (strcmp (sec->output_section->name, ".init") == 0
977 || strcmp (sec->output_section->name, ".fini") == 0)
978 {
979 (*_bfd_error_handler)
980 (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."),
981 sec->owner, sec, (unsigned long) roff);
982 bfd_set_error (bfd_error_bad_value);
983 goto error_return;
984 }
985
986 /* If the branch and target are in the same section, you've
987 got one honking big section and we can't help you. You'll
988 get an error message later. */
989 if (tsec == sec)
990 continue;
991
992 /* Look for an existing fixup to this address. */
993 for (f = fixups; f ; f = f->next)
994 if (f->tsec == tsec && f->toff == toff)
995 break;
996
997 if (f == NULL)
998 {
999 /* Two alternatives: If it's a branch to a PLT entry, we can
1000 make a copy of the FULL_PLT entry. Otherwise, we'll have
1001 to use a `brl' insn to get where we're going. */
1002
1003 size_t size;
1004
1005 if (tsec == ia64_info->plt_sec)
1006 size = sizeof (plt_full_entry);
1007 else
1008 size = oor_branch_size;
1009
1010 /* Resize the current section to make room for the new branch. */
1011 trampoff = (sec->size + 15) & (bfd_vma) -16;
1012
1013 /* If trampoline is out of range, there is nothing we
1014 can do. */
1015 offset = trampoff - (roff & (bfd_vma) -4);
1016 if (offset < -0x1000000 || offset > 0x0FFFFF0)
1017 continue;
1018
1019 amt = trampoff + size;
1020 contents = (bfd_byte *) bfd_realloc (contents, amt);
1021 if (contents == NULL)
1022 goto error_return;
1023 sec->size = amt;
1024
1025 if (tsec == ia64_info->plt_sec)
1026 {
1027 memcpy (contents + trampoff, plt_full_entry, size);
1028
1029 /* Hijack the old relocation for use as the PLTOFF reloc. */
1030 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1031 R_IA64_PLTOFF22);
1032 irel->r_offset = trampoff;
1033 }
1034 else
1035 {
1036 if (size == sizeof (oor_ip))
1037 {
1038 memcpy (contents + trampoff, oor_ip, size);
1039 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1040 R_IA64_PCREL64I);
1041 irel->r_addend -= 16;
1042 irel->r_offset = trampoff + 2;
1043 }
1044 else
1045 {
1046 memcpy (contents + trampoff, oor_brl, size);
1047 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1048 R_IA64_PCREL60B);
1049 irel->r_offset = trampoff + 2;
1050 }
1051
1052 }
1053
1054 /* Record the fixup so we don't do it again this section. */
1055 f = (struct one_fixup *)
1056 bfd_malloc ((bfd_size_type) sizeof (*f));
1057 f->next = fixups;
1058 f->tsec = tsec;
1059 f->toff = toff;
1060 f->trampoff = trampoff;
1061 fixups = f;
1062 }
1063 else
1064 {
1065 /* If trampoline is out of range, there is nothing we
1066 can do. */
1067 offset = f->trampoff - (roff & (bfd_vma) -4);
1068 if (offset < -0x1000000 || offset > 0x0FFFFF0)
1069 continue;
1070
1071 /* Nop out the reloc, since we're finalizing things here. */
1072 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
1073 }
1074
1075 /* Fix up the existing branch to hit the trampoline. */
1076 if (elfNN_ia64_install_value (contents + roff, offset, r_type)
1077 != bfd_reloc_ok)
1078 goto error_return;
1079
1080 changed_contents = TRUE;
1081 changed_relocs = TRUE;
1082 }
1083 else
1084 {
1085 /* Fetch the gp. */
1086 if (gp == 0)
1087 {
1088 bfd *obfd = sec->output_section->owner;
1089 gp = _bfd_get_gp_value (obfd);
1090 if (gp == 0)
1091 {
1092 if (!elfNN_ia64_choose_gp (obfd, link_info))
1093 goto error_return;
1094 gp = _bfd_get_gp_value (obfd);
1095 }
1096 }
1097
1098 /* If the data is out of range, do nothing. */
1099 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
1100 ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
1101 continue;
1102
1103 if (r_type == R_IA64_LTOFF22X)
1104 {
1105 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1106 R_IA64_GPREL22);
1107 changed_relocs = TRUE;
1108 if (dyn_i->want_gotx)
1109 {
1110 dyn_i->want_gotx = 0;
1111 changed_got |= !dyn_i->want_got;
1112 }
1113 }
1114 else
1115 {
1116 elfNN_ia64_relax_ldxmov (contents, roff);
1117 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
1118 changed_contents = TRUE;
1119 changed_relocs = TRUE;
1120 }
1121 }
1122 }
1123
1124 /* ??? If we created fixups, this may push the code segment large
1125 enough that the data segment moves, which will change the GP.
1126 Reset the GP so that we re-calculate next round. We need to
1127 do this at the _beginning_ of the next round; now will not do. */
1128
1129 /* Clean up and go home. */
1130 while (fixups)
1131 {
1132 struct one_fixup *f = fixups;
1133 fixups = fixups->next;
1134 free (f);
1135 }
1136
1137 if (isymbuf != NULL
1138 && symtab_hdr->contents != (unsigned char *) isymbuf)
1139 {
1140 if (! link_info->keep_memory)
1141 free (isymbuf);
1142 else
1143 {
1144 /* Cache the symbols for elf_link_input_bfd. */
1145 symtab_hdr->contents = (unsigned char *) isymbuf;
1146 }
1147 }
1148
1149 if (contents != NULL
1150 && elf_section_data (sec)->this_hdr.contents != contents)
1151 {
1152 if (!changed_contents && !link_info->keep_memory)
1153 free (contents);
1154 else
1155 {
1156 /* Cache the section contents for elf_link_input_bfd. */
1157 elf_section_data (sec)->this_hdr.contents = contents;
1158 }
1159 }
1160
1161 if (elf_section_data (sec)->relocs != internal_relocs)
1162 {
1163 if (!changed_relocs)
1164 free (internal_relocs);
1165 else
1166 elf_section_data (sec)->relocs = internal_relocs;
1167 }
1168
1169 if (changed_got)
1170 {
1171 struct elfNN_ia64_allocate_data data;
1172 data.info = link_info;
1173 data.ofs = 0;
1174 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
1175
1176 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
1177 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
1178 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
1179 ia64_info->got_sec->size = data.ofs;
1180
1181 /* ??? Resize .rela.got too. */
1182 }
1183
1184 if (!link_info->need_relax_finalize)
1185 sec->need_finalize_relax = 0;
1186
1187 *again = changed_contents || changed_relocs;
1188 return TRUE;
1189
1190 error_return:
1191 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
1192 free (isymbuf);
1193 if (contents != NULL
1194 && elf_section_data (sec)->this_hdr.contents != contents)
1195 free (contents);
1196 if (internal_relocs != NULL
1197 && elf_section_data (sec)->relocs != internal_relocs)
1198 free (internal_relocs);
1199 return FALSE;
1200 }
1201
1202 static void
1203 elfNN_ia64_relax_ldxmov (contents, off)
1204 bfd_byte *contents;
1205 bfd_vma off;
1206 {
1207 int shift, r1, r3;
1208 bfd_vma dword, insn;
1209
1210 switch ((int)off & 0x3)
1211 {
1212 case 0: shift = 5; break;
1213 case 1: shift = 14; off += 3; break;
1214 case 2: shift = 23; off += 6; break;
1215 default:
1216 abort ();
1217 }
1218
1219 dword = bfd_getl64 (contents + off);
1220 insn = (dword >> shift) & 0x1ffffffffffLL;
1221
1222 r1 = (insn >> 6) & 127;
1223 r3 = (insn >> 20) & 127;
1224 if (r1 == r3)
1225 insn = 0x8000000; /* nop */
1226 else
1227 insn = (insn & 0x7f01fff) | 0x10800000000LL; /* (qp) mov r1 = r3 */
1228
1229 dword &= ~(0x1ffffffffffLL << shift);
1230 dword |= (insn << shift);
1231 bfd_putl64 (dword, contents + off);
1232 }
1233 \f
1234 /* Return TRUE if NAME is an unwind table section name. */
1235
1236 static inline bfd_boolean
1237 is_unwind_section_name (abfd, name)
1238 bfd *abfd;
1239 const char *name;
1240 {
1241 size_t len1, len2, len3;
1242
1243 if (elfNN_ia64_hpux_vec (abfd->xvec)
1244 && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
1245 return FALSE;
1246
1247 len1 = sizeof (ELF_STRING_ia64_unwind) - 1;
1248 len2 = sizeof (ELF_STRING_ia64_unwind_info) - 1;
1249 len3 = sizeof (ELF_STRING_ia64_unwind_once) - 1;
1250 return ((strncmp (name, ELF_STRING_ia64_unwind, len1) == 0
1251 && strncmp (name, ELF_STRING_ia64_unwind_info, len2) != 0)
1252 || strncmp (name, ELF_STRING_ia64_unwind_once, len3) == 0);
1253 }
1254
1255 /* Handle an IA-64 specific section when reading an object file. This
1256 is called when elfcode.h finds a section with an unknown type. */
1257
1258 static bfd_boolean
1259 elfNN_ia64_section_from_shdr (abfd, hdr, name)
1260 bfd *abfd;
1261 Elf_Internal_Shdr *hdr;
1262 const char *name;
1263 {
1264 asection *newsect;
1265
1266 /* There ought to be a place to keep ELF backend specific flags, but
1267 at the moment there isn't one. We just keep track of the
1268 sections by their name, instead. Fortunately, the ABI gives
1269 suggested names for all the MIPS specific sections, so we will
1270 probably get away with this. */
1271 switch (hdr->sh_type)
1272 {
1273 case SHT_IA_64_UNWIND:
1274 case SHT_IA_64_HP_OPT_ANOT:
1275 break;
1276
1277 case SHT_IA_64_EXT:
1278 if (strcmp (name, ELF_STRING_ia64_archext) != 0)
1279 return FALSE;
1280 break;
1281
1282 default:
1283 return FALSE;
1284 }
1285
1286 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1287 return FALSE;
1288 newsect = hdr->bfd_section;
1289
1290 return TRUE;
1291 }
1292
1293 /* Convert IA-64 specific section flags to bfd internal section flags. */
1294
1295 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
1296 flag. */
1297
1298 static bfd_boolean
1299 elfNN_ia64_section_flags (flags, hdr)
1300 flagword *flags;
1301 const Elf_Internal_Shdr *hdr;
1302 {
1303 if (hdr->sh_flags & SHF_IA_64_SHORT)
1304 *flags |= SEC_SMALL_DATA;
1305
1306 return TRUE;
1307 }
1308
1309 /* Set the correct type for an IA-64 ELF section. We do this by the
1310 section name, which is a hack, but ought to work. */
1311
1312 static bfd_boolean
1313 elfNN_ia64_fake_sections (abfd, hdr, sec)
1314 bfd *abfd ATTRIBUTE_UNUSED;
1315 Elf_Internal_Shdr *hdr;
1316 asection *sec;
1317 {
1318 register const char *name;
1319
1320 name = bfd_get_section_name (abfd, sec);
1321
1322 if (is_unwind_section_name (abfd, name))
1323 {
1324 /* We don't have the sections numbered at this point, so sh_info
1325 is set later, in elfNN_ia64_final_write_processing. */
1326 hdr->sh_type = SHT_IA_64_UNWIND;
1327 hdr->sh_flags |= SHF_LINK_ORDER;
1328 }
1329 else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
1330 hdr->sh_type = SHT_IA_64_EXT;
1331 else if (strcmp (name, ".HP.opt_annot") == 0)
1332 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
1333 else if (strcmp (name, ".reloc") == 0)
1334 /* This is an ugly, but unfortunately necessary hack that is
1335 needed when producing EFI binaries on IA-64. It tells
1336 elf.c:elf_fake_sections() not to consider ".reloc" as a section
1337 containing ELF relocation info. We need this hack in order to
1338 be able to generate ELF binaries that can be translated into
1339 EFI applications (which are essentially COFF objects). Those
1340 files contain a COFF ".reloc" section inside an ELFNN object,
1341 which would normally cause BFD to segfault because it would
1342 attempt to interpret this section as containing relocation
1343 entries for section "oc". With this hack enabled, ".reloc"
1344 will be treated as a normal data section, which will avoid the
1345 segfault. However, you won't be able to create an ELFNN binary
1346 with a section named "oc" that needs relocations, but that's
1347 the kind of ugly side-effects you get when detecting section
1348 types based on their names... In practice, this limitation is
1349 unlikely to bite. */
1350 hdr->sh_type = SHT_PROGBITS;
1351
1352 if (sec->flags & SEC_SMALL_DATA)
1353 hdr->sh_flags |= SHF_IA_64_SHORT;
1354
1355 return TRUE;
1356 }
1357
1358 /* The final processing done just before writing out an IA-64 ELF
1359 object file. */
1360
1361 static void
1362 elfNN_ia64_final_write_processing (abfd, linker)
1363 bfd *abfd;
1364 bfd_boolean linker ATTRIBUTE_UNUSED;
1365 {
1366 Elf_Internal_Shdr *hdr;
1367 asection *s;
1368
1369 for (s = abfd->sections; s; s = s->next)
1370 {
1371 hdr = &elf_section_data (s)->this_hdr;
1372 switch (hdr->sh_type)
1373 {
1374 case SHT_IA_64_UNWIND:
1375 /* The IA-64 processor-specific ABI requires setting sh_link
1376 to the unwind section, whereas HP-UX requires sh_info to
1377 do so. For maximum compatibility, we'll set both for
1378 now... */
1379 hdr->sh_info = hdr->sh_link;
1380 break;
1381 }
1382 }
1383
1384 if (! elf_flags_init (abfd))
1385 {
1386 unsigned long flags = 0;
1387
1388 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1389 flags |= EF_IA_64_BE;
1390 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1391 flags |= EF_IA_64_ABI64;
1392
1393 elf_elfheader(abfd)->e_flags = flags;
1394 elf_flags_init (abfd) = TRUE;
1395 }
1396 }
1397
1398 /* Hook called by the linker routine which adds symbols from an object
1399 file. We use it to put .comm items in .sbss, and not .bss. */
1400
1401 static bfd_boolean
1402 elfNN_ia64_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1403 bfd *abfd;
1404 struct bfd_link_info *info;
1405 Elf_Internal_Sym *sym;
1406 const char **namep ATTRIBUTE_UNUSED;
1407 flagword *flagsp ATTRIBUTE_UNUSED;
1408 asection **secp;
1409 bfd_vma *valp;
1410 {
1411 if (sym->st_shndx == SHN_COMMON
1412 && !info->relocatable
1413 && sym->st_size <= elf_gp_size (abfd))
1414 {
1415 /* Common symbols less than or equal to -G nn bytes are
1416 automatically put into .sbss. */
1417
1418 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1419
1420 if (scomm == NULL)
1421 {
1422 scomm = bfd_make_section (abfd, ".scommon");
1423 if (scomm == NULL
1424 || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC
1425 | SEC_IS_COMMON
1426 | SEC_LINKER_CREATED)))
1427 return FALSE;
1428 }
1429
1430 *secp = scomm;
1431 *valp = sym->st_size;
1432 }
1433
1434 return TRUE;
1435 }
1436
1437 /* Return the number of additional phdrs we will need. */
1438
1439 static int
1440 elfNN_ia64_additional_program_headers (abfd)
1441 bfd *abfd;
1442 {
1443 asection *s;
1444 int ret = 0;
1445
1446 /* See if we need a PT_IA_64_ARCHEXT segment. */
1447 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1448 if (s && (s->flags & SEC_LOAD))
1449 ++ret;
1450
1451 /* Count how many PT_IA_64_UNWIND segments we need. */
1452 for (s = abfd->sections; s; s = s->next)
1453 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1454 ++ret;
1455
1456 return ret;
1457 }
1458
1459 static bfd_boolean
1460 elfNN_ia64_modify_segment_map (abfd, info)
1461 bfd *abfd;
1462 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1463 {
1464 struct elf_segment_map *m, **pm;
1465 Elf_Internal_Shdr *hdr;
1466 asection *s;
1467
1468 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1469 all PT_LOAD segments. */
1470 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1471 if (s && (s->flags & SEC_LOAD))
1472 {
1473 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1474 if (m->p_type == PT_IA_64_ARCHEXT)
1475 break;
1476 if (m == NULL)
1477 {
1478 m = ((struct elf_segment_map *)
1479 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1480 if (m == NULL)
1481 return FALSE;
1482
1483 m->p_type = PT_IA_64_ARCHEXT;
1484 m->count = 1;
1485 m->sections[0] = s;
1486
1487 /* We want to put it after the PHDR and INTERP segments. */
1488 pm = &elf_tdata (abfd)->segment_map;
1489 while (*pm != NULL
1490 && ((*pm)->p_type == PT_PHDR
1491 || (*pm)->p_type == PT_INTERP))
1492 pm = &(*pm)->next;
1493
1494 m->next = *pm;
1495 *pm = m;
1496 }
1497 }
1498
1499 /* Install PT_IA_64_UNWIND segments, if needed. */
1500 for (s = abfd->sections; s; s = s->next)
1501 {
1502 hdr = &elf_section_data (s)->this_hdr;
1503 if (hdr->sh_type != SHT_IA_64_UNWIND)
1504 continue;
1505
1506 if (s && (s->flags & SEC_LOAD))
1507 {
1508 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1509 if (m->p_type == PT_IA_64_UNWIND)
1510 {
1511 int i;
1512
1513 /* Look through all sections in the unwind segment
1514 for a match since there may be multiple sections
1515 to a segment. */
1516 for (i = m->count - 1; i >= 0; --i)
1517 if (m->sections[i] == s)
1518 break;
1519
1520 if (i >= 0)
1521 break;
1522 }
1523
1524 if (m == NULL)
1525 {
1526 m = ((struct elf_segment_map *)
1527 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1528 if (m == NULL)
1529 return FALSE;
1530
1531 m->p_type = PT_IA_64_UNWIND;
1532 m->count = 1;
1533 m->sections[0] = s;
1534 m->next = NULL;
1535
1536 /* We want to put it last. */
1537 pm = &elf_tdata (abfd)->segment_map;
1538 while (*pm != NULL)
1539 pm = &(*pm)->next;
1540 *pm = m;
1541 }
1542 }
1543 }
1544
1545 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1546 the input sections for each output section in the segment and testing
1547 for SHF_IA_64_NORECOV on each. */
1548 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1549 if (m->p_type == PT_LOAD)
1550 {
1551 int i;
1552 for (i = m->count - 1; i >= 0; --i)
1553 {
1554 struct bfd_link_order *order = m->sections[i]->link_order_head;
1555 while (order)
1556 {
1557 if (order->type == bfd_indirect_link_order)
1558 {
1559 asection *is = order->u.indirect.section;
1560 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1561 if (flags & SHF_IA_64_NORECOV)
1562 {
1563 m->p_flags |= PF_IA_64_NORECOV;
1564 goto found;
1565 }
1566 }
1567 order = order->next;
1568 }
1569 }
1570 found:;
1571 }
1572
1573 return TRUE;
1574 }
1575
1576 /* According to the Tahoe assembler spec, all labels starting with a
1577 '.' are local. */
1578
1579 static bfd_boolean
1580 elfNN_ia64_is_local_label_name (abfd, name)
1581 bfd *abfd ATTRIBUTE_UNUSED;
1582 const char *name;
1583 {
1584 return name[0] == '.';
1585 }
1586
1587 /* Should we do dynamic things to this symbol? */
1588
1589 static bfd_boolean
1590 elfNN_ia64_dynamic_symbol_p (h, info, r_type)
1591 struct elf_link_hash_entry *h;
1592 struct bfd_link_info *info;
1593 int r_type;
1594 {
1595 bfd_boolean ignore_protected
1596 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1597 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1598
1599 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1600 }
1601 \f
1602 static struct bfd_hash_entry*
1603 elfNN_ia64_new_elf_hash_entry (entry, table, string)
1604 struct bfd_hash_entry *entry;
1605 struct bfd_hash_table *table;
1606 const char *string;
1607 {
1608 struct elfNN_ia64_link_hash_entry *ret;
1609 ret = (struct elfNN_ia64_link_hash_entry *) entry;
1610
1611 /* Allocate the structure if it has not already been allocated by a
1612 subclass. */
1613 if (!ret)
1614 ret = bfd_hash_allocate (table, sizeof (*ret));
1615
1616 if (!ret)
1617 return 0;
1618
1619 /* Call the allocation method of the superclass. */
1620 ret = ((struct elfNN_ia64_link_hash_entry *)
1621 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1622 table, string));
1623
1624 ret->info = NULL;
1625 return (struct bfd_hash_entry *) ret;
1626 }
1627
1628 static void
1629 elfNN_ia64_hash_copy_indirect (bed, xdir, xind)
1630 const struct elf_backend_data *bed ATTRIBUTE_UNUSED;
1631 struct elf_link_hash_entry *xdir, *xind;
1632 {
1633 struct elfNN_ia64_link_hash_entry *dir, *ind;
1634
1635 dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1636 ind = (struct elfNN_ia64_link_hash_entry *) xind;
1637
1638 /* Copy down any references that we may have already seen to the
1639 symbol which just became indirect. */
1640
1641 dir->root.ref_dynamic |= ind->root.ref_dynamic;
1642 dir->root.ref_regular |= ind->root.ref_regular;
1643 dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1644 dir->root.needs_plt |= ind->root.needs_plt;
1645
1646 if (ind->root.root.type != bfd_link_hash_indirect)
1647 return;
1648
1649 /* Copy over the got and plt data. This would have been done
1650 by check_relocs. */
1651
1652 if (dir->info == NULL)
1653 {
1654 struct elfNN_ia64_dyn_sym_info *dyn_i;
1655
1656 dir->info = dyn_i = ind->info;
1657 ind->info = NULL;
1658
1659 /* Fix up the dyn_sym_info pointers to the global symbol. */
1660 for (; dyn_i; dyn_i = dyn_i->next)
1661 dyn_i->h = &dir->root;
1662 }
1663 BFD_ASSERT (ind->info == NULL);
1664
1665 /* Copy over the dynindx. */
1666
1667 if (dir->root.dynindx == -1)
1668 {
1669 dir->root.dynindx = ind->root.dynindx;
1670 dir->root.dynstr_index = ind->root.dynstr_index;
1671 ind->root.dynindx = -1;
1672 ind->root.dynstr_index = 0;
1673 }
1674 BFD_ASSERT (ind->root.dynindx == -1);
1675 }
1676
1677 static void
1678 elfNN_ia64_hash_hide_symbol (info, xh, force_local)
1679 struct bfd_link_info *info;
1680 struct elf_link_hash_entry *xh;
1681 bfd_boolean force_local;
1682 {
1683 struct elfNN_ia64_link_hash_entry *h;
1684 struct elfNN_ia64_dyn_sym_info *dyn_i;
1685
1686 h = (struct elfNN_ia64_link_hash_entry *)xh;
1687
1688 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1689
1690 for (dyn_i = h->info; dyn_i; dyn_i = dyn_i->next)
1691 {
1692 dyn_i->want_plt2 = 0;
1693 dyn_i->want_plt = 0;
1694 }
1695 }
1696
1697 /* Compute a hash of a local hash entry. */
1698
1699 static hashval_t
1700 elfNN_ia64_local_htab_hash (ptr)
1701 const void *ptr;
1702 {
1703 struct elfNN_ia64_local_hash_entry *entry
1704 = (struct elfNN_ia64_local_hash_entry *) ptr;
1705
1706 return (((entry->id & 0xff) << 24) | ((entry->id & 0xff00) << 8))
1707 ^ entry->r_sym ^ (entry->id >> 16);
1708 }
1709
1710 /* Compare local hash entries. */
1711
1712 static int
1713 elfNN_ia64_local_htab_eq (ptr1, ptr2)
1714 const void *ptr1, *ptr2;
1715 {
1716 struct elfNN_ia64_local_hash_entry *entry1
1717 = (struct elfNN_ia64_local_hash_entry *) ptr1;
1718 struct elfNN_ia64_local_hash_entry *entry2
1719 = (struct elfNN_ia64_local_hash_entry *) ptr2;
1720
1721 return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1722 }
1723
1724 /* Create the derived linker hash table. The IA-64 ELF port uses this
1725 derived hash table to keep information specific to the IA-64 ElF
1726 linker (without using static variables). */
1727
1728 static struct bfd_link_hash_table*
1729 elfNN_ia64_hash_table_create (abfd)
1730 bfd *abfd;
1731 {
1732 struct elfNN_ia64_link_hash_table *ret;
1733
1734 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1735 if (!ret)
1736 return 0;
1737
1738 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1739 elfNN_ia64_new_elf_hash_entry))
1740 {
1741 free (ret);
1742 return 0;
1743 }
1744
1745 ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1746 elfNN_ia64_local_htab_eq, NULL);
1747 ret->loc_hash_memory = objalloc_create ();
1748 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1749 {
1750 free (ret);
1751 return 0;
1752 }
1753
1754 return &ret->root.root;
1755 }
1756
1757 /* Destroy IA-64 linker hash table. */
1758
1759 static void
1760 elfNN_ia64_hash_table_free (hash)
1761 struct bfd_link_hash_table *hash;
1762 {
1763 struct elfNN_ia64_link_hash_table *ia64_info
1764 = (struct elfNN_ia64_link_hash_table *) hash;
1765 if (ia64_info->loc_hash_table)
1766 htab_delete (ia64_info->loc_hash_table);
1767 if (ia64_info->loc_hash_memory)
1768 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1769 _bfd_generic_link_hash_table_free (hash);
1770 }
1771
1772 /* Traverse both local and global hash tables. */
1773
1774 struct elfNN_ia64_dyn_sym_traverse_data
1775 {
1776 bfd_boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
1777 PTR data;
1778 };
1779
1780 static bfd_boolean
1781 elfNN_ia64_global_dyn_sym_thunk (xentry, xdata)
1782 struct bfd_hash_entry *xentry;
1783 PTR xdata;
1784 {
1785 struct elfNN_ia64_link_hash_entry *entry
1786 = (struct elfNN_ia64_link_hash_entry *) xentry;
1787 struct elfNN_ia64_dyn_sym_traverse_data *data
1788 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1789 struct elfNN_ia64_dyn_sym_info *dyn_i;
1790
1791 if (entry->root.root.type == bfd_link_hash_warning)
1792 entry = (struct elfNN_ia64_link_hash_entry *) entry->root.root.u.i.link;
1793
1794 for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
1795 if (! (*data->func) (dyn_i, data->data))
1796 return FALSE;
1797 return TRUE;
1798 }
1799
1800 static bfd_boolean
1801 elfNN_ia64_local_dyn_sym_thunk (slot, xdata)
1802 void **slot;
1803 PTR xdata;
1804 {
1805 struct elfNN_ia64_local_hash_entry *entry
1806 = (struct elfNN_ia64_local_hash_entry *) *slot;
1807 struct elfNN_ia64_dyn_sym_traverse_data *data
1808 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1809 struct elfNN_ia64_dyn_sym_info *dyn_i;
1810
1811 for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
1812 if (! (*data->func) (dyn_i, data->data))
1813 return 0;
1814 return 1;
1815 }
1816
1817 static void
1818 elfNN_ia64_dyn_sym_traverse (ia64_info, func, data)
1819 struct elfNN_ia64_link_hash_table *ia64_info;
1820 bfd_boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
1821 PTR data;
1822 {
1823 struct elfNN_ia64_dyn_sym_traverse_data xdata;
1824
1825 xdata.func = func;
1826 xdata.data = data;
1827
1828 elf_link_hash_traverse (&ia64_info->root,
1829 elfNN_ia64_global_dyn_sym_thunk, &xdata);
1830 htab_traverse (ia64_info->loc_hash_table,
1831 elfNN_ia64_local_dyn_sym_thunk, &xdata);
1832 }
1833 \f
1834 static bfd_boolean
1835 elfNN_ia64_create_dynamic_sections (abfd, info)
1836 bfd *abfd;
1837 struct bfd_link_info *info;
1838 {
1839 struct elfNN_ia64_link_hash_table *ia64_info;
1840 asection *s;
1841
1842 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1843 return FALSE;
1844
1845 ia64_info = elfNN_ia64_hash_table (info);
1846
1847 ia64_info->plt_sec = bfd_get_section_by_name (abfd, ".plt");
1848 ia64_info->got_sec = bfd_get_section_by_name (abfd, ".got");
1849
1850 {
1851 flagword flags = bfd_get_section_flags (abfd, ia64_info->got_sec);
1852 bfd_set_section_flags (abfd, ia64_info->got_sec, SEC_SMALL_DATA | flags);
1853 /* The .got section is always aligned at 8 bytes. */
1854 bfd_set_section_alignment (abfd, ia64_info->got_sec, 3);
1855 }
1856
1857 if (!get_pltoff (abfd, info, ia64_info))
1858 return FALSE;
1859
1860 s = bfd_make_section(abfd, ".rela.IA_64.pltoff");
1861 if (s == NULL
1862 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1863 | SEC_HAS_CONTENTS
1864 | SEC_IN_MEMORY
1865 | SEC_LINKER_CREATED
1866 | SEC_READONLY))
1867 || !bfd_set_section_alignment (abfd, s, 3))
1868 return FALSE;
1869 ia64_info->rel_pltoff_sec = s;
1870
1871 s = bfd_make_section(abfd, ".rela.got");
1872 if (s == NULL
1873 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1874 | SEC_HAS_CONTENTS
1875 | SEC_IN_MEMORY
1876 | SEC_LINKER_CREATED
1877 | SEC_READONLY))
1878 || !bfd_set_section_alignment (abfd, s, 3))
1879 return FALSE;
1880 ia64_info->rel_got_sec = s;
1881
1882 return TRUE;
1883 }
1884
1885 /* Find and/or create a hash entry for local symbol. */
1886 static struct elfNN_ia64_local_hash_entry *
1887 get_local_sym_hash (ia64_info, abfd, rel, create)
1888 struct elfNN_ia64_link_hash_table *ia64_info;
1889 bfd *abfd;
1890 const Elf_Internal_Rela *rel;
1891 bfd_boolean create;
1892 {
1893 struct elfNN_ia64_local_hash_entry e, *ret;
1894 asection *sec = abfd->sections;
1895 hashval_t h = (((sec->id & 0xff) << 24) | ((sec->id & 0xff00) << 8))
1896 ^ ELFNN_R_SYM (rel->r_info) ^ (sec->id >> 16);
1897 void **slot;
1898
1899 e.id = sec->id;
1900 e.r_sym = ELFNN_R_SYM (rel->r_info);
1901 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
1902 create ? INSERT : NO_INSERT);
1903
1904 if (!slot)
1905 return NULL;
1906
1907 if (*slot)
1908 return (struct elfNN_ia64_local_hash_entry *) *slot;
1909
1910 ret = (struct elfNN_ia64_local_hash_entry *)
1911 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
1912 sizeof (struct elfNN_ia64_local_hash_entry));
1913 if (ret)
1914 {
1915 memset (ret, 0, sizeof (*ret));
1916 ret->id = sec->id;
1917 ret->r_sym = ELFNN_R_SYM (rel->r_info);
1918 *slot = ret;
1919 }
1920 return ret;
1921 }
1922
1923 /* Find and/or create a descriptor for dynamic symbol info. This will
1924 vary based on global or local symbol, and the addend to the reloc. */
1925
1926 static struct elfNN_ia64_dyn_sym_info *
1927 get_dyn_sym_info (ia64_info, h, abfd, rel, create)
1928 struct elfNN_ia64_link_hash_table *ia64_info;
1929 struct elf_link_hash_entry *h;
1930 bfd *abfd;
1931 const Elf_Internal_Rela *rel;
1932 bfd_boolean create;
1933 {
1934 struct elfNN_ia64_dyn_sym_info **pp;
1935 struct elfNN_ia64_dyn_sym_info *dyn_i;
1936 bfd_vma addend = rel ? rel->r_addend : 0;
1937
1938 if (h)
1939 pp = &((struct elfNN_ia64_link_hash_entry *)h)->info;
1940 else
1941 {
1942 struct elfNN_ia64_local_hash_entry *loc_h;
1943
1944 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
1945 if (!loc_h)
1946 {
1947 BFD_ASSERT (!create);
1948 return NULL;
1949 }
1950
1951 pp = &loc_h->info;
1952 }
1953
1954 for (dyn_i = *pp; dyn_i && dyn_i->addend != addend; dyn_i = *pp)
1955 pp = &dyn_i->next;
1956
1957 if (dyn_i == NULL && create)
1958 {
1959 dyn_i = ((struct elfNN_ia64_dyn_sym_info *)
1960 bfd_zalloc (abfd, (bfd_size_type) sizeof *dyn_i));
1961 *pp = dyn_i;
1962 dyn_i->addend = addend;
1963 }
1964
1965 return dyn_i;
1966 }
1967
1968 static asection *
1969 get_got (abfd, info, ia64_info)
1970 bfd *abfd;
1971 struct bfd_link_info *info;
1972 struct elfNN_ia64_link_hash_table *ia64_info;
1973 {
1974 asection *got;
1975 bfd *dynobj;
1976
1977 got = ia64_info->got_sec;
1978 if (!got)
1979 {
1980 flagword flags;
1981
1982 dynobj = ia64_info->root.dynobj;
1983 if (!dynobj)
1984 ia64_info->root.dynobj = dynobj = abfd;
1985 if (!_bfd_elf_create_got_section (dynobj, info))
1986 return 0;
1987
1988 got = bfd_get_section_by_name (dynobj, ".got");
1989 BFD_ASSERT (got);
1990 ia64_info->got_sec = got;
1991
1992 /* The .got section is always aligned at 8 bytes. */
1993 if (!bfd_set_section_alignment (abfd, got, 3))
1994 return 0;
1995
1996 flags = bfd_get_section_flags (abfd, got);
1997 bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags);
1998 }
1999
2000 return got;
2001 }
2002
2003 /* Create function descriptor section (.opd). This section is called .opd
2004 because it contains "official procedure descriptors". The "official"
2005 refers to the fact that these descriptors are used when taking the address
2006 of a procedure, thus ensuring a unique address for each procedure. */
2007
2008 static asection *
2009 get_fptr (abfd, info, ia64_info)
2010 bfd *abfd;
2011 struct bfd_link_info *info;
2012 struct elfNN_ia64_link_hash_table *ia64_info;
2013 {
2014 asection *fptr;
2015 bfd *dynobj;
2016
2017 fptr = ia64_info->fptr_sec;
2018 if (!fptr)
2019 {
2020 dynobj = ia64_info->root.dynobj;
2021 if (!dynobj)
2022 ia64_info->root.dynobj = dynobj = abfd;
2023
2024 fptr = bfd_make_section (dynobj, ".opd");
2025 if (!fptr
2026 || !bfd_set_section_flags (dynobj, fptr,
2027 (SEC_ALLOC
2028 | SEC_LOAD
2029 | SEC_HAS_CONTENTS
2030 | SEC_IN_MEMORY
2031 | (info->pie ? 0 : SEC_READONLY)
2032 | SEC_LINKER_CREATED))
2033 || !bfd_set_section_alignment (abfd, fptr, 4))
2034 {
2035 BFD_ASSERT (0);
2036 return NULL;
2037 }
2038
2039 ia64_info->fptr_sec = fptr;
2040
2041 if (info->pie)
2042 {
2043 asection *fptr_rel;
2044 fptr_rel = bfd_make_section(dynobj, ".rela.opd");
2045 if (fptr_rel == NULL
2046 || !bfd_set_section_flags (dynobj, fptr_rel,
2047 (SEC_ALLOC | SEC_LOAD
2048 | SEC_HAS_CONTENTS
2049 | SEC_IN_MEMORY
2050 | SEC_LINKER_CREATED
2051 | SEC_READONLY))
2052 || !bfd_set_section_alignment (abfd, fptr_rel, 3))
2053 {
2054 BFD_ASSERT (0);
2055 return NULL;
2056 }
2057
2058 ia64_info->rel_fptr_sec = fptr_rel;
2059 }
2060 }
2061
2062 return fptr;
2063 }
2064
2065 static asection *
2066 get_pltoff (abfd, info, ia64_info)
2067 bfd *abfd;
2068 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2069 struct elfNN_ia64_link_hash_table *ia64_info;
2070 {
2071 asection *pltoff;
2072 bfd *dynobj;
2073
2074 pltoff = ia64_info->pltoff_sec;
2075 if (!pltoff)
2076 {
2077 dynobj = ia64_info->root.dynobj;
2078 if (!dynobj)
2079 ia64_info->root.dynobj = dynobj = abfd;
2080
2081 pltoff = bfd_make_section (dynobj, ELF_STRING_ia64_pltoff);
2082 if (!pltoff
2083 || !bfd_set_section_flags (dynobj, pltoff,
2084 (SEC_ALLOC
2085 | SEC_LOAD
2086 | SEC_HAS_CONTENTS
2087 | SEC_IN_MEMORY
2088 | SEC_SMALL_DATA
2089 | SEC_LINKER_CREATED))
2090 || !bfd_set_section_alignment (abfd, pltoff, 4))
2091 {
2092 BFD_ASSERT (0);
2093 return NULL;
2094 }
2095
2096 ia64_info->pltoff_sec = pltoff;
2097 }
2098
2099 return pltoff;
2100 }
2101
2102 static asection *
2103 get_reloc_section (abfd, ia64_info, sec, create)
2104 bfd *abfd;
2105 struct elfNN_ia64_link_hash_table *ia64_info;
2106 asection *sec;
2107 bfd_boolean create;
2108 {
2109 const char *srel_name;
2110 asection *srel;
2111 bfd *dynobj;
2112
2113 srel_name = (bfd_elf_string_from_elf_section
2114 (abfd, elf_elfheader(abfd)->e_shstrndx,
2115 elf_section_data(sec)->rel_hdr.sh_name));
2116 if (srel_name == NULL)
2117 return NULL;
2118
2119 BFD_ASSERT ((strncmp (srel_name, ".rela", 5) == 0
2120 && strcmp (bfd_get_section_name (abfd, sec),
2121 srel_name+5) == 0)
2122 || (strncmp (srel_name, ".rel", 4) == 0
2123 && strcmp (bfd_get_section_name (abfd, sec),
2124 srel_name+4) == 0));
2125
2126 dynobj = ia64_info->root.dynobj;
2127 if (!dynobj)
2128 ia64_info->root.dynobj = dynobj = abfd;
2129
2130 srel = bfd_get_section_by_name (dynobj, srel_name);
2131 if (srel == NULL && create)
2132 {
2133 srel = bfd_make_section (dynobj, srel_name);
2134 if (srel == NULL
2135 || !bfd_set_section_flags (dynobj, srel,
2136 (SEC_ALLOC
2137 | SEC_LOAD
2138 | SEC_HAS_CONTENTS
2139 | SEC_IN_MEMORY
2140 | SEC_LINKER_CREATED
2141 | SEC_READONLY))
2142 || !bfd_set_section_alignment (dynobj, srel, 3))
2143 return NULL;
2144 }
2145
2146 return srel;
2147 }
2148
2149 static bfd_boolean
2150 count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2151 asection *srel, int type, bfd_boolean reltext)
2152 {
2153 struct elfNN_ia64_dyn_reloc_entry *rent;
2154
2155 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2156 if (rent->srel == srel && rent->type == type)
2157 break;
2158
2159 if (!rent)
2160 {
2161 rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2162 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2163 if (!rent)
2164 return FALSE;
2165
2166 rent->next = dyn_i->reloc_entries;
2167 rent->srel = srel;
2168 rent->type = type;
2169 rent->count = 0;
2170 dyn_i->reloc_entries = rent;
2171 }
2172 rent->reltext = reltext;
2173 rent->count++;
2174
2175 return TRUE;
2176 }
2177
2178 static bfd_boolean
2179 elfNN_ia64_check_relocs (abfd, info, sec, relocs)
2180 bfd *abfd;
2181 struct bfd_link_info *info;
2182 asection *sec;
2183 const Elf_Internal_Rela *relocs;
2184 {
2185 struct elfNN_ia64_link_hash_table *ia64_info;
2186 const Elf_Internal_Rela *relend;
2187 Elf_Internal_Shdr *symtab_hdr;
2188 const Elf_Internal_Rela *rel;
2189 asection *got, *fptr, *srel, *pltoff;
2190
2191 if (info->relocatable)
2192 return TRUE;
2193
2194 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2195 ia64_info = elfNN_ia64_hash_table (info);
2196
2197 got = fptr = srel = pltoff = NULL;
2198
2199 relend = relocs + sec->reloc_count;
2200 for (rel = relocs; rel < relend; ++rel)
2201 {
2202 enum {
2203 NEED_GOT = 1,
2204 NEED_GOTX = 2,
2205 NEED_FPTR = 4,
2206 NEED_PLTOFF = 8,
2207 NEED_MIN_PLT = 16,
2208 NEED_FULL_PLT = 32,
2209 NEED_DYNREL = 64,
2210 NEED_LTOFF_FPTR = 128,
2211 NEED_TPREL = 256,
2212 NEED_DTPMOD = 512,
2213 NEED_DTPREL = 1024
2214 };
2215
2216 struct elf_link_hash_entry *h = NULL;
2217 unsigned long r_symndx = ELFNN_R_SYM (rel->r_info);
2218 struct elfNN_ia64_dyn_sym_info *dyn_i;
2219 int need_entry;
2220 bfd_boolean maybe_dynamic;
2221 int dynrel_type = R_IA64_NONE;
2222
2223 if (r_symndx >= symtab_hdr->sh_info)
2224 {
2225 /* We're dealing with a global symbol -- find its hash entry
2226 and mark it as being referenced. */
2227 long indx = r_symndx - symtab_hdr->sh_info;
2228 h = elf_sym_hashes (abfd)[indx];
2229 while (h->root.type == bfd_link_hash_indirect
2230 || h->root.type == bfd_link_hash_warning)
2231 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2232
2233 h->ref_regular = 1;
2234 }
2235
2236 /* We can only get preliminary data on whether a symbol is
2237 locally or externally defined, as not all of the input files
2238 have yet been processed. Do something with what we know, as
2239 this may help reduce memory usage and processing time later. */
2240 maybe_dynamic = FALSE;
2241 if (h && ((!info->executable
2242 && (!info->symbolic
2243 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2244 || !h->def_regular
2245 || h->root.type == bfd_link_hash_defweak))
2246 maybe_dynamic = TRUE;
2247
2248 need_entry = 0;
2249 switch (ELFNN_R_TYPE (rel->r_info))
2250 {
2251 case R_IA64_TPREL64MSB:
2252 case R_IA64_TPREL64LSB:
2253 if (info->shared || maybe_dynamic)
2254 need_entry = NEED_DYNREL;
2255 dynrel_type = R_IA64_TPREL64LSB;
2256 if (info->shared)
2257 info->flags |= DF_STATIC_TLS;
2258 break;
2259
2260 case R_IA64_LTOFF_TPREL22:
2261 need_entry = NEED_TPREL;
2262 if (info->shared)
2263 info->flags |= DF_STATIC_TLS;
2264 break;
2265
2266 case R_IA64_DTPREL64MSB:
2267 case R_IA64_DTPREL64LSB:
2268 if (info->shared || maybe_dynamic)
2269 need_entry = NEED_DYNREL;
2270 dynrel_type = R_IA64_DTPREL64LSB;
2271 break;
2272
2273 case R_IA64_LTOFF_DTPREL22:
2274 need_entry = NEED_DTPREL;
2275 break;
2276
2277 case R_IA64_DTPMOD64MSB:
2278 case R_IA64_DTPMOD64LSB:
2279 if (info->shared || maybe_dynamic)
2280 need_entry = NEED_DYNREL;
2281 dynrel_type = R_IA64_DTPMOD64LSB;
2282 break;
2283
2284 case R_IA64_LTOFF_DTPMOD22:
2285 need_entry = NEED_DTPMOD;
2286 break;
2287
2288 case R_IA64_LTOFF_FPTR22:
2289 case R_IA64_LTOFF_FPTR64I:
2290 case R_IA64_LTOFF_FPTR32MSB:
2291 case R_IA64_LTOFF_FPTR32LSB:
2292 case R_IA64_LTOFF_FPTR64MSB:
2293 case R_IA64_LTOFF_FPTR64LSB:
2294 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2295 break;
2296
2297 case R_IA64_FPTR64I:
2298 case R_IA64_FPTR32MSB:
2299 case R_IA64_FPTR32LSB:
2300 case R_IA64_FPTR64MSB:
2301 case R_IA64_FPTR64LSB:
2302 if (info->shared || h)
2303 need_entry = NEED_FPTR | NEED_DYNREL;
2304 else
2305 need_entry = NEED_FPTR;
2306 dynrel_type = R_IA64_FPTR64LSB;
2307 break;
2308
2309 case R_IA64_LTOFF22:
2310 case R_IA64_LTOFF64I:
2311 need_entry = NEED_GOT;
2312 break;
2313
2314 case R_IA64_LTOFF22X:
2315 need_entry = NEED_GOTX;
2316 break;
2317
2318 case R_IA64_PLTOFF22:
2319 case R_IA64_PLTOFF64I:
2320 case R_IA64_PLTOFF64MSB:
2321 case R_IA64_PLTOFF64LSB:
2322 need_entry = NEED_PLTOFF;
2323 if (h)
2324 {
2325 if (maybe_dynamic)
2326 need_entry |= NEED_MIN_PLT;
2327 }
2328 else
2329 {
2330 (*info->callbacks->warning)
2331 (info, _("@pltoff reloc against local symbol"), 0,
2332 abfd, 0, (bfd_vma) 0);
2333 }
2334 break;
2335
2336 case R_IA64_PCREL21B:
2337 case R_IA64_PCREL60B:
2338 /* Depending on where this symbol is defined, we may or may not
2339 need a full plt entry. Only skip if we know we'll not need
2340 the entry -- static or symbolic, and the symbol definition
2341 has already been seen. */
2342 if (maybe_dynamic && rel->r_addend == 0)
2343 need_entry = NEED_FULL_PLT;
2344 break;
2345
2346 case R_IA64_IMM14:
2347 case R_IA64_IMM22:
2348 case R_IA64_IMM64:
2349 case R_IA64_DIR32MSB:
2350 case R_IA64_DIR32LSB:
2351 case R_IA64_DIR64MSB:
2352 case R_IA64_DIR64LSB:
2353 /* Shared objects will always need at least a REL relocation. */
2354 if (info->shared || maybe_dynamic)
2355 need_entry = NEED_DYNREL;
2356 dynrel_type = R_IA64_DIR64LSB;
2357 break;
2358
2359 case R_IA64_IPLTMSB:
2360 case R_IA64_IPLTLSB:
2361 /* Shared objects will always need at least a REL relocation. */
2362 if (info->shared || maybe_dynamic)
2363 need_entry = NEED_DYNREL;
2364 dynrel_type = R_IA64_IPLTLSB;
2365 break;
2366
2367 case R_IA64_PCREL22:
2368 case R_IA64_PCREL64I:
2369 case R_IA64_PCREL32MSB:
2370 case R_IA64_PCREL32LSB:
2371 case R_IA64_PCREL64MSB:
2372 case R_IA64_PCREL64LSB:
2373 if (maybe_dynamic)
2374 need_entry = NEED_DYNREL;
2375 dynrel_type = R_IA64_PCREL64LSB;
2376 break;
2377 }
2378
2379 if (!need_entry)
2380 continue;
2381
2382 if ((need_entry & NEED_FPTR) != 0
2383 && rel->r_addend)
2384 {
2385 (*info->callbacks->warning)
2386 (info, _("non-zero addend in @fptr reloc"), 0,
2387 abfd, 0, (bfd_vma) 0);
2388 }
2389
2390 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE);
2391
2392 /* Record whether or not this is a local symbol. */
2393 dyn_i->h = h;
2394
2395 /* Create what's needed. */
2396 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2397 | NEED_DTPMOD | NEED_DTPREL))
2398 {
2399 if (!got)
2400 {
2401 got = get_got (abfd, info, ia64_info);
2402 if (!got)
2403 return FALSE;
2404 }
2405 if (need_entry & NEED_GOT)
2406 dyn_i->want_got = 1;
2407 if (need_entry & NEED_GOTX)
2408 dyn_i->want_gotx = 1;
2409 if (need_entry & NEED_TPREL)
2410 dyn_i->want_tprel = 1;
2411 if (need_entry & NEED_DTPMOD)
2412 dyn_i->want_dtpmod = 1;
2413 if (need_entry & NEED_DTPREL)
2414 dyn_i->want_dtprel = 1;
2415 }
2416 if (need_entry & NEED_FPTR)
2417 {
2418 if (!fptr)
2419 {
2420 fptr = get_fptr (abfd, info, ia64_info);
2421 if (!fptr)
2422 return FALSE;
2423 }
2424
2425 /* FPTRs for shared libraries are allocated by the dynamic
2426 linker. Make sure this local symbol will appear in the
2427 dynamic symbol table. */
2428 if (!h && info->shared)
2429 {
2430 if (! (bfd_elf_link_record_local_dynamic_symbol
2431 (info, abfd, (long) r_symndx)))
2432 return FALSE;
2433 }
2434
2435 dyn_i->want_fptr = 1;
2436 }
2437 if (need_entry & NEED_LTOFF_FPTR)
2438 dyn_i->want_ltoff_fptr = 1;
2439 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2440 {
2441 if (!ia64_info->root.dynobj)
2442 ia64_info->root.dynobj = abfd;
2443 h->needs_plt = 1;
2444 dyn_i->want_plt = 1;
2445 }
2446 if (need_entry & NEED_FULL_PLT)
2447 dyn_i->want_plt2 = 1;
2448 if (need_entry & NEED_PLTOFF)
2449 {
2450 /* This is needed here, in case @pltoff is used in a non-shared
2451 link. */
2452 if (!pltoff)
2453 {
2454 pltoff = get_pltoff (abfd, info, ia64_info);
2455 if (!pltoff)
2456 return FALSE;
2457 }
2458
2459 dyn_i->want_pltoff = 1;
2460 }
2461 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2462 {
2463 if (!srel)
2464 {
2465 srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2466 if (!srel)
2467 return FALSE;
2468 }
2469 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2470 (sec->flags & SEC_READONLY) != 0))
2471 return FALSE;
2472 }
2473 }
2474
2475 return TRUE;
2476 }
2477
2478 /* For cleanliness, and potentially faster dynamic loading, allocate
2479 external GOT entries first. */
2480
2481 static bfd_boolean
2482 allocate_global_data_got (dyn_i, data)
2483 struct elfNN_ia64_dyn_sym_info *dyn_i;
2484 PTR data;
2485 {
2486 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2487
2488 if ((dyn_i->want_got || dyn_i->want_gotx)
2489 && ! dyn_i->want_fptr
2490 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2491 {
2492 dyn_i->got_offset = x->ofs;
2493 x->ofs += 8;
2494 }
2495 if (dyn_i->want_tprel)
2496 {
2497 dyn_i->tprel_offset = x->ofs;
2498 x->ofs += 8;
2499 }
2500 if (dyn_i->want_dtpmod)
2501 {
2502 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2503 {
2504 dyn_i->dtpmod_offset = x->ofs;
2505 x->ofs += 8;
2506 }
2507 else
2508 {
2509 struct elfNN_ia64_link_hash_table *ia64_info;
2510
2511 ia64_info = elfNN_ia64_hash_table (x->info);
2512 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2513 {
2514 ia64_info->self_dtpmod_offset = x->ofs;
2515 x->ofs += 8;
2516 }
2517 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2518 }
2519 }
2520 if (dyn_i->want_dtprel)
2521 {
2522 dyn_i->dtprel_offset = x->ofs;
2523 x->ofs += 8;
2524 }
2525 return TRUE;
2526 }
2527
2528 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2529
2530 static bfd_boolean
2531 allocate_global_fptr_got (dyn_i, data)
2532 struct elfNN_ia64_dyn_sym_info *dyn_i;
2533 PTR data;
2534 {
2535 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2536
2537 if (dyn_i->want_got
2538 && dyn_i->want_fptr
2539 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTR64LSB))
2540 {
2541 dyn_i->got_offset = x->ofs;
2542 x->ofs += 8;
2543 }
2544 return TRUE;
2545 }
2546
2547 /* Lastly, allocate all the GOT entries for local data. */
2548
2549 static bfd_boolean
2550 allocate_local_got (dyn_i, data)
2551 struct elfNN_ia64_dyn_sym_info *dyn_i;
2552 PTR data;
2553 {
2554 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2555
2556 if ((dyn_i->want_got || dyn_i->want_gotx)
2557 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2558 {
2559 dyn_i->got_offset = x->ofs;
2560 x->ofs += 8;
2561 }
2562 return TRUE;
2563 }
2564
2565 /* Search for the index of a global symbol in it's defining object file. */
2566
2567 static long
2568 global_sym_index (h)
2569 struct elf_link_hash_entry *h;
2570 {
2571 struct elf_link_hash_entry **p;
2572 bfd *obj;
2573
2574 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2575 || h->root.type == bfd_link_hash_defweak);
2576
2577 obj = h->root.u.def.section->owner;
2578 for (p = elf_sym_hashes (obj); *p != h; ++p)
2579 continue;
2580
2581 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2582 }
2583
2584 /* Allocate function descriptors. We can do these for every function
2585 in a main executable that is not exported. */
2586
2587 static bfd_boolean
2588 allocate_fptr (dyn_i, data)
2589 struct elfNN_ia64_dyn_sym_info *dyn_i;
2590 PTR data;
2591 {
2592 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2593
2594 if (dyn_i->want_fptr)
2595 {
2596 struct elf_link_hash_entry *h = dyn_i->h;
2597
2598 if (h)
2599 while (h->root.type == bfd_link_hash_indirect
2600 || h->root.type == bfd_link_hash_warning)
2601 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2602
2603 if (!x->info->executable
2604 && (!h
2605 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2606 || h->root.type != bfd_link_hash_undefweak))
2607 {
2608 if (h && h->dynindx == -1)
2609 {
2610 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2611 || (h->root.type == bfd_link_hash_defweak));
2612
2613 if (!bfd_elf_link_record_local_dynamic_symbol
2614 (x->info, h->root.u.def.section->owner,
2615 global_sym_index (h)))
2616 return FALSE;
2617 }
2618
2619 dyn_i->want_fptr = 0;
2620 }
2621 else if (h == NULL || h->dynindx == -1)
2622 {
2623 dyn_i->fptr_offset = x->ofs;
2624 x->ofs += 16;
2625 }
2626 else
2627 dyn_i->want_fptr = 0;
2628 }
2629 return TRUE;
2630 }
2631
2632 /* Allocate all the minimal PLT entries. */
2633
2634 static bfd_boolean
2635 allocate_plt_entries (dyn_i, data)
2636 struct elfNN_ia64_dyn_sym_info *dyn_i;
2637 PTR data;
2638 {
2639 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2640
2641 if (dyn_i->want_plt)
2642 {
2643 struct elf_link_hash_entry *h = dyn_i->h;
2644
2645 if (h)
2646 while (h->root.type == bfd_link_hash_indirect
2647 || h->root.type == bfd_link_hash_warning)
2648 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2649
2650 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2651 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2652 {
2653 bfd_size_type offset = x->ofs;
2654 if (offset == 0)
2655 offset = PLT_HEADER_SIZE;
2656 dyn_i->plt_offset = offset;
2657 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2658
2659 dyn_i->want_pltoff = 1;
2660 }
2661 else
2662 {
2663 dyn_i->want_plt = 0;
2664 dyn_i->want_plt2 = 0;
2665 }
2666 }
2667 return TRUE;
2668 }
2669
2670 /* Allocate all the full PLT entries. */
2671
2672 static bfd_boolean
2673 allocate_plt2_entries (dyn_i, data)
2674 struct elfNN_ia64_dyn_sym_info *dyn_i;
2675 PTR data;
2676 {
2677 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2678
2679 if (dyn_i->want_plt2)
2680 {
2681 struct elf_link_hash_entry *h = dyn_i->h;
2682 bfd_size_type ofs = x->ofs;
2683
2684 dyn_i->plt2_offset = ofs;
2685 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2686
2687 while (h->root.type == bfd_link_hash_indirect
2688 || h->root.type == bfd_link_hash_warning)
2689 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2690 dyn_i->h->plt.offset = ofs;
2691 }
2692 return TRUE;
2693 }
2694
2695 /* Allocate all the PLTOFF entries requested by relocations and
2696 plt entries. We can't share space with allocated FPTR entries,
2697 because the latter are not necessarily addressable by the GP.
2698 ??? Relaxation might be able to determine that they are. */
2699
2700 static bfd_boolean
2701 allocate_pltoff_entries (dyn_i, data)
2702 struct elfNN_ia64_dyn_sym_info *dyn_i;
2703 PTR data;
2704 {
2705 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2706
2707 if (dyn_i->want_pltoff)
2708 {
2709 dyn_i->pltoff_offset = x->ofs;
2710 x->ofs += 16;
2711 }
2712 return TRUE;
2713 }
2714
2715 /* Allocate dynamic relocations for those symbols that turned out
2716 to be dynamic. */
2717
2718 static bfd_boolean
2719 allocate_dynrel_entries (dyn_i, data)
2720 struct elfNN_ia64_dyn_sym_info *dyn_i;
2721 PTR data;
2722 {
2723 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2724 struct elfNN_ia64_link_hash_table *ia64_info;
2725 struct elfNN_ia64_dyn_reloc_entry *rent;
2726 bfd_boolean dynamic_symbol, shared, resolved_zero;
2727
2728 ia64_info = elfNN_ia64_hash_table (x->info);
2729
2730 /* Note that this can't be used in relation to FPTR relocs below. */
2731 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2732
2733 shared = x->info->shared;
2734 resolved_zero = (dyn_i->h
2735 && ELF_ST_VISIBILITY (dyn_i->h->other)
2736 && dyn_i->h->root.type == bfd_link_hash_undefweak);
2737
2738 /* Take care of the normal data relocations. */
2739
2740 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2741 {
2742 int count = rent->count;
2743
2744 switch (rent->type)
2745 {
2746 case R_IA64_FPTR64LSB:
2747 /* Allocate one iff !want_fptr and not PIE, which by this point
2748 will be true only if we're actually allocating one statically
2749 in the main executable. Position independent executables
2750 need a relative reloc. */
2751 if (dyn_i->want_fptr && !x->info->pie)
2752 continue;
2753 break;
2754 case R_IA64_PCREL64LSB:
2755 if (!dynamic_symbol)
2756 continue;
2757 break;
2758 case R_IA64_DIR64LSB:
2759 if (!dynamic_symbol && !shared)
2760 continue;
2761 break;
2762 case R_IA64_IPLTLSB:
2763 if (!dynamic_symbol && !shared)
2764 continue;
2765 /* Use two REL relocations for IPLT relocations
2766 against local symbols. */
2767 if (!dynamic_symbol)
2768 count *= 2;
2769 break;
2770 case R_IA64_TPREL64LSB:
2771 case R_IA64_DTPREL64LSB:
2772 case R_IA64_DTPMOD64LSB:
2773 break;
2774 default:
2775 abort ();
2776 }
2777 if (rent->reltext)
2778 ia64_info->reltext = 1;
2779 rent->srel->size += sizeof (ElfNN_External_Rela) * count;
2780 }
2781
2782 /* Take care of the GOT and PLT relocations. */
2783
2784 if ((!resolved_zero
2785 && (dynamic_symbol || shared)
2786 && (dyn_i->want_got || dyn_i->want_gotx))
2787 || (dyn_i->want_ltoff_fptr
2788 && dyn_i->h
2789 && dyn_i->h->dynindx != -1))
2790 {
2791 if (!dyn_i->want_ltoff_fptr
2792 || !x->info->pie
2793 || dyn_i->h == NULL
2794 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2795 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2796 }
2797 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2798 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2799 if (dynamic_symbol && dyn_i->want_dtpmod)
2800 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2801 if (dynamic_symbol && dyn_i->want_dtprel)
2802 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2803 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2804 {
2805 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2806 ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2807 }
2808
2809 if (!resolved_zero && dyn_i->want_pltoff)
2810 {
2811 bfd_size_type t = 0;
2812
2813 /* Dynamic symbols get one IPLT relocation. Local symbols in
2814 shared libraries get two REL relocations. Local symbols in
2815 main applications get nothing. */
2816 if (dynamic_symbol)
2817 t = sizeof (ElfNN_External_Rela);
2818 else if (shared)
2819 t = 2 * sizeof (ElfNN_External_Rela);
2820
2821 ia64_info->rel_pltoff_sec->size += t;
2822 }
2823
2824 return TRUE;
2825 }
2826
2827 static bfd_boolean
2828 elfNN_ia64_adjust_dynamic_symbol (info, h)
2829 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2830 struct elf_link_hash_entry *h;
2831 {
2832 /* ??? Undefined symbols with PLT entries should be re-defined
2833 to be the PLT entry. */
2834
2835 /* If this is a weak symbol, and there is a real definition, the
2836 processor independent code will have arranged for us to see the
2837 real definition first, and we can just use the same value. */
2838 if (h->u.weakdef != NULL)
2839 {
2840 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2841 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2842 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2843 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2844 return TRUE;
2845 }
2846
2847 /* If this is a reference to a symbol defined by a dynamic object which
2848 is not a function, we might allocate the symbol in our .dynbss section
2849 and allocate a COPY dynamic relocation.
2850
2851 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
2852 of hackery. */
2853
2854 return TRUE;
2855 }
2856
2857 static bfd_boolean
2858 elfNN_ia64_size_dynamic_sections (output_bfd, info)
2859 bfd *output_bfd ATTRIBUTE_UNUSED;
2860 struct bfd_link_info *info;
2861 {
2862 struct elfNN_ia64_allocate_data data;
2863 struct elfNN_ia64_link_hash_table *ia64_info;
2864 asection *sec;
2865 bfd *dynobj;
2866 bfd_boolean relplt = FALSE;
2867
2868 dynobj = elf_hash_table(info)->dynobj;
2869 ia64_info = elfNN_ia64_hash_table (info);
2870 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
2871 BFD_ASSERT(dynobj != NULL);
2872 data.info = info;
2873
2874 /* Set the contents of the .interp section to the interpreter. */
2875 if (ia64_info->root.dynamic_sections_created
2876 && info->executable)
2877 {
2878 sec = bfd_get_section_by_name (dynobj, ".interp");
2879 BFD_ASSERT (sec != NULL);
2880 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
2881 sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
2882 }
2883
2884 /* Allocate the GOT entries. */
2885
2886 if (ia64_info->got_sec)
2887 {
2888 data.ofs = 0;
2889 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
2890 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
2891 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
2892 ia64_info->got_sec->size = data.ofs;
2893 }
2894
2895 /* Allocate the FPTR entries. */
2896
2897 if (ia64_info->fptr_sec)
2898 {
2899 data.ofs = 0;
2900 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
2901 ia64_info->fptr_sec->size = data.ofs;
2902 }
2903
2904 /* Now that we've seen all of the input files, we can decide which
2905 symbols need plt entries. Allocate the minimal PLT entries first.
2906 We do this even though dynamic_sections_created may be FALSE, because
2907 this has the side-effect of clearing want_plt and want_plt2. */
2908
2909 data.ofs = 0;
2910 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
2911
2912 ia64_info->minplt_entries = 0;
2913 if (data.ofs)
2914 {
2915 ia64_info->minplt_entries
2916 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
2917 }
2918
2919 /* Align the pointer for the plt2 entries. */
2920 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
2921
2922 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
2923 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
2924 {
2925 /* FIXME: we always reserve the memory for dynamic linker even if
2926 there are no PLT entries since dynamic linker may assume the
2927 reserved memory always exists. */
2928
2929 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
2930
2931 ia64_info->plt_sec->size = data.ofs;
2932
2933 /* If we've got a .plt, we need some extra memory for the dynamic
2934 linker. We stuff these in .got.plt. */
2935 sec = bfd_get_section_by_name (dynobj, ".got.plt");
2936 sec->size = 8 * PLT_RESERVED_WORDS;
2937 }
2938
2939 /* Allocate the PLTOFF entries. */
2940
2941 if (ia64_info->pltoff_sec)
2942 {
2943 data.ofs = 0;
2944 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
2945 ia64_info->pltoff_sec->size = data.ofs;
2946 }
2947
2948 if (ia64_info->root.dynamic_sections_created)
2949 {
2950 /* Allocate space for the dynamic relocations that turned out to be
2951 required. */
2952
2953 if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
2954 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2955 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
2956 }
2957
2958 /* We have now determined the sizes of the various dynamic sections.
2959 Allocate memory for them. */
2960 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2961 {
2962 bfd_boolean strip;
2963
2964 if (!(sec->flags & SEC_LINKER_CREATED))
2965 continue;
2966
2967 /* If we don't need this section, strip it from the output file.
2968 There were several sections primarily related to dynamic
2969 linking that must be create before the linker maps input
2970 sections to output sections. The linker does that before
2971 bfd_elf_size_dynamic_sections is called, and it is that
2972 function which decides whether anything needs to go into
2973 these sections. */
2974
2975 strip = (sec->size == 0);
2976
2977 if (sec == ia64_info->got_sec)
2978 strip = FALSE;
2979 else if (sec == ia64_info->rel_got_sec)
2980 {
2981 if (strip)
2982 ia64_info->rel_got_sec = NULL;
2983 else
2984 /* We use the reloc_count field as a counter if we need to
2985 copy relocs into the output file. */
2986 sec->reloc_count = 0;
2987 }
2988 else if (sec == ia64_info->fptr_sec)
2989 {
2990 if (strip)
2991 ia64_info->fptr_sec = NULL;
2992 }
2993 else if (sec == ia64_info->rel_fptr_sec)
2994 {
2995 if (strip)
2996 ia64_info->rel_fptr_sec = NULL;
2997 else
2998 /* We use the reloc_count field as a counter if we need to
2999 copy relocs into the output file. */
3000 sec->reloc_count = 0;
3001 }
3002 else if (sec == ia64_info->plt_sec)
3003 {
3004 if (strip)
3005 ia64_info->plt_sec = NULL;
3006 }
3007 else if (sec == ia64_info->pltoff_sec)
3008 {
3009 if (strip)
3010 ia64_info->pltoff_sec = NULL;
3011 }
3012 else if (sec == ia64_info->rel_pltoff_sec)
3013 {
3014 if (strip)
3015 ia64_info->rel_pltoff_sec = NULL;
3016 else
3017 {
3018 relplt = TRUE;
3019 /* We use the reloc_count field as a counter if we need to
3020 copy relocs into the output file. */
3021 sec->reloc_count = 0;
3022 }
3023 }
3024 else
3025 {
3026 const char *name;
3027
3028 /* It's OK to base decisions on the section name, because none
3029 of the dynobj section names depend upon the input files. */
3030 name = bfd_get_section_name (dynobj, sec);
3031
3032 if (strcmp (name, ".got.plt") == 0)
3033 strip = FALSE;
3034 else if (strncmp (name, ".rel", 4) == 0)
3035 {
3036 if (!strip)
3037 {
3038 /* We use the reloc_count field as a counter if we need to
3039 copy relocs into the output file. */
3040 sec->reloc_count = 0;
3041 }
3042 }
3043 else
3044 continue;
3045 }
3046
3047 if (strip)
3048 _bfd_strip_section_from_output (info, sec);
3049 else
3050 {
3051 /* Allocate memory for the section contents. */
3052 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3053 if (sec->contents == NULL && sec->size != 0)
3054 return FALSE;
3055 }
3056 }
3057
3058 if (elf_hash_table (info)->dynamic_sections_created)
3059 {
3060 /* Add some entries to the .dynamic section. We fill in the values
3061 later (in finish_dynamic_sections) but we must add the entries now
3062 so that we get the correct size for the .dynamic section. */
3063
3064 if (info->executable)
3065 {
3066 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3067 by the debugger. */
3068 #define add_dynamic_entry(TAG, VAL) \
3069 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3070
3071 if (!add_dynamic_entry (DT_DEBUG, 0))
3072 return FALSE;
3073 }
3074
3075 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3076 return FALSE;
3077 if (!add_dynamic_entry (DT_PLTGOT, 0))
3078 return FALSE;
3079
3080 if (relplt)
3081 {
3082 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3083 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3084 || !add_dynamic_entry (DT_JMPREL, 0))
3085 return FALSE;
3086 }
3087
3088 if (!add_dynamic_entry (DT_RELA, 0)
3089 || !add_dynamic_entry (DT_RELASZ, 0)
3090 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3091 return FALSE;
3092
3093 if (ia64_info->reltext)
3094 {
3095 if (!add_dynamic_entry (DT_TEXTREL, 0))
3096 return FALSE;
3097 info->flags |= DF_TEXTREL;
3098 }
3099 }
3100
3101 /* ??? Perhaps force __gp local. */
3102
3103 return TRUE;
3104 }
3105
3106 static bfd_reloc_status_type
3107 elfNN_ia64_install_value (hit_addr, v, r_type)
3108 bfd_byte *hit_addr;
3109 bfd_vma v;
3110 unsigned int r_type;
3111 {
3112 const struct ia64_operand *op;
3113 int bigendian = 0, shift = 0;
3114 bfd_vma t0, t1, insn, dword;
3115 enum ia64_opnd opnd;
3116 const char *err;
3117 size_t size = 8;
3118 #ifdef BFD_HOST_U_64_BIT
3119 BFD_HOST_U_64_BIT val = (BFD_HOST_U_64_BIT) v;
3120 #else
3121 bfd_vma val = v;
3122 #endif
3123
3124 opnd = IA64_OPND_NIL;
3125 switch (r_type)
3126 {
3127 case R_IA64_NONE:
3128 case R_IA64_LDXMOV:
3129 return bfd_reloc_ok;
3130
3131 /* Instruction relocations. */
3132
3133 case R_IA64_IMM14:
3134 case R_IA64_TPREL14:
3135 case R_IA64_DTPREL14:
3136 opnd = IA64_OPND_IMM14;
3137 break;
3138
3139 case R_IA64_PCREL21F: opnd = IA64_OPND_TGT25; break;
3140 case R_IA64_PCREL21M: opnd = IA64_OPND_TGT25b; break;
3141 case R_IA64_PCREL60B: opnd = IA64_OPND_TGT64; break;
3142 case R_IA64_PCREL21B:
3143 case R_IA64_PCREL21BI:
3144 opnd = IA64_OPND_TGT25c;
3145 break;
3146
3147 case R_IA64_IMM22:
3148 case R_IA64_GPREL22:
3149 case R_IA64_LTOFF22:
3150 case R_IA64_LTOFF22X:
3151 case R_IA64_PLTOFF22:
3152 case R_IA64_PCREL22:
3153 case R_IA64_LTOFF_FPTR22:
3154 case R_IA64_TPREL22:
3155 case R_IA64_DTPREL22:
3156 case R_IA64_LTOFF_TPREL22:
3157 case R_IA64_LTOFF_DTPMOD22:
3158 case R_IA64_LTOFF_DTPREL22:
3159 opnd = IA64_OPND_IMM22;
3160 break;
3161
3162 case R_IA64_IMM64:
3163 case R_IA64_GPREL64I:
3164 case R_IA64_LTOFF64I:
3165 case R_IA64_PLTOFF64I:
3166 case R_IA64_PCREL64I:
3167 case R_IA64_FPTR64I:
3168 case R_IA64_LTOFF_FPTR64I:
3169 case R_IA64_TPREL64I:
3170 case R_IA64_DTPREL64I:
3171 opnd = IA64_OPND_IMMU64;
3172 break;
3173
3174 /* Data relocations. */
3175
3176 case R_IA64_DIR32MSB:
3177 case R_IA64_GPREL32MSB:
3178 case R_IA64_FPTR32MSB:
3179 case R_IA64_PCREL32MSB:
3180 case R_IA64_LTOFF_FPTR32MSB:
3181 case R_IA64_SEGREL32MSB:
3182 case R_IA64_SECREL32MSB:
3183 case R_IA64_LTV32MSB:
3184 case R_IA64_DTPREL32MSB:
3185 size = 4; bigendian = 1;
3186 break;
3187
3188 case R_IA64_DIR32LSB:
3189 case R_IA64_GPREL32LSB:
3190 case R_IA64_FPTR32LSB:
3191 case R_IA64_PCREL32LSB:
3192 case R_IA64_LTOFF_FPTR32LSB:
3193 case R_IA64_SEGREL32LSB:
3194 case R_IA64_SECREL32LSB:
3195 case R_IA64_LTV32LSB:
3196 case R_IA64_DTPREL32LSB:
3197 size = 4; bigendian = 0;
3198 break;
3199
3200 case R_IA64_DIR64MSB:
3201 case R_IA64_GPREL64MSB:
3202 case R_IA64_PLTOFF64MSB:
3203 case R_IA64_FPTR64MSB:
3204 case R_IA64_PCREL64MSB:
3205 case R_IA64_LTOFF_FPTR64MSB:
3206 case R_IA64_SEGREL64MSB:
3207 case R_IA64_SECREL64MSB:
3208 case R_IA64_LTV64MSB:
3209 case R_IA64_TPREL64MSB:
3210 case R_IA64_DTPMOD64MSB:
3211 case R_IA64_DTPREL64MSB:
3212 size = 8; bigendian = 1;
3213 break;
3214
3215 case R_IA64_DIR64LSB:
3216 case R_IA64_GPREL64LSB:
3217 case R_IA64_PLTOFF64LSB:
3218 case R_IA64_FPTR64LSB:
3219 case R_IA64_PCREL64LSB:
3220 case R_IA64_LTOFF_FPTR64LSB:
3221 case R_IA64_SEGREL64LSB:
3222 case R_IA64_SECREL64LSB:
3223 case R_IA64_LTV64LSB:
3224 case R_IA64_TPREL64LSB:
3225 case R_IA64_DTPMOD64LSB:
3226 case R_IA64_DTPREL64LSB:
3227 size = 8; bigendian = 0;
3228 break;
3229
3230 /* Unsupported / Dynamic relocations. */
3231 default:
3232 return bfd_reloc_notsupported;
3233 }
3234
3235 switch (opnd)
3236 {
3237 case IA64_OPND_IMMU64:
3238 hit_addr -= (long) hit_addr & 0x3;
3239 t0 = bfd_getl64 (hit_addr);
3240 t1 = bfd_getl64 (hit_addr + 8);
3241
3242 /* tmpl/s: bits 0.. 5 in t0
3243 slot 0: bits 5..45 in t0
3244 slot 1: bits 46..63 in t0, bits 0..22 in t1
3245 slot 2: bits 23..63 in t1 */
3246
3247 /* First, clear the bits that form the 64 bit constant. */
3248 t0 &= ~(0x3ffffLL << 46);
3249 t1 &= ~(0x7fffffLL
3250 | (( (0x07fLL << 13) | (0x1ffLL << 27)
3251 | (0x01fLL << 22) | (0x001LL << 21)
3252 | (0x001LL << 36)) << 23));
3253
3254 t0 |= ((val >> 22) & 0x03ffffLL) << 46; /* 18 lsbs of imm41 */
3255 t1 |= ((val >> 40) & 0x7fffffLL) << 0; /* 23 msbs of imm41 */
3256 t1 |= ( (((val >> 0) & 0x07f) << 13) /* imm7b */
3257 | (((val >> 7) & 0x1ff) << 27) /* imm9d */
3258 | (((val >> 16) & 0x01f) << 22) /* imm5c */
3259 | (((val >> 21) & 0x001) << 21) /* ic */
3260 | (((val >> 63) & 0x001) << 36)) << 23; /* i */
3261
3262 bfd_putl64 (t0, hit_addr);
3263 bfd_putl64 (t1, hit_addr + 8);
3264 break;
3265
3266 case IA64_OPND_TGT64:
3267 hit_addr -= (long) hit_addr & 0x3;
3268 t0 = bfd_getl64 (hit_addr);
3269 t1 = bfd_getl64 (hit_addr + 8);
3270
3271 /* tmpl/s: bits 0.. 5 in t0
3272 slot 0: bits 5..45 in t0
3273 slot 1: bits 46..63 in t0, bits 0..22 in t1
3274 slot 2: bits 23..63 in t1 */
3275
3276 /* First, clear the bits that form the 64 bit constant. */
3277 t0 &= ~(0x3ffffLL << 46);
3278 t1 &= ~(0x7fffffLL
3279 | ((1LL << 36 | 0xfffffLL << 13) << 23));
3280
3281 val >>= 4;
3282 t0 |= ((val >> 20) & 0xffffLL) << 2 << 46; /* 16 lsbs of imm39 */
3283 t1 |= ((val >> 36) & 0x7fffffLL) << 0; /* 23 msbs of imm39 */
3284 t1 |= ((((val >> 0) & 0xfffffLL) << 13) /* imm20b */
3285 | (((val >> 59) & 0x1LL) << 36)) << 23; /* i */
3286
3287 bfd_putl64 (t0, hit_addr);
3288 bfd_putl64 (t1, hit_addr + 8);
3289 break;
3290
3291 default:
3292 switch ((long) hit_addr & 0x3)
3293 {
3294 case 0: shift = 5; break;
3295 case 1: shift = 14; hit_addr += 3; break;
3296 case 2: shift = 23; hit_addr += 6; break;
3297 case 3: return bfd_reloc_notsupported; /* shouldn't happen... */
3298 }
3299 dword = bfd_getl64 (hit_addr);
3300 insn = (dword >> shift) & 0x1ffffffffffLL;
3301
3302 op = elf64_ia64_operands + opnd;
3303 err = (*op->insert) (op, val, (ia64_insn *)& insn);
3304 if (err)
3305 return bfd_reloc_overflow;
3306
3307 dword &= ~(0x1ffffffffffLL << shift);
3308 dword |= (insn << shift);
3309 bfd_putl64 (dword, hit_addr);
3310 break;
3311
3312 case IA64_OPND_NIL:
3313 /* A data relocation. */
3314 if (bigendian)
3315 if (size == 4)
3316 bfd_putb32 (val, hit_addr);
3317 else
3318 bfd_putb64 (val, hit_addr);
3319 else
3320 if (size == 4)
3321 bfd_putl32 (val, hit_addr);
3322 else
3323 bfd_putl64 (val, hit_addr);
3324 break;
3325 }
3326
3327 return bfd_reloc_ok;
3328 }
3329
3330 static void
3331 elfNN_ia64_install_dyn_reloc (abfd, info, sec, srel, offset, type,
3332 dynindx, addend)
3333 bfd *abfd;
3334 struct bfd_link_info *info;
3335 asection *sec;
3336 asection *srel;
3337 bfd_vma offset;
3338 unsigned int type;
3339 long dynindx;
3340 bfd_vma addend;
3341 {
3342 Elf_Internal_Rela outrel;
3343 bfd_byte *loc;
3344
3345 BFD_ASSERT (dynindx != -1);
3346 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3347 outrel.r_addend = addend;
3348 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3349 if (outrel.r_offset >= (bfd_vma) -2)
3350 {
3351 /* Run for the hills. We shouldn't be outputting a relocation
3352 for this. So do what everyone else does and output a no-op. */
3353 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3354 outrel.r_addend = 0;
3355 outrel.r_offset = 0;
3356 }
3357 else
3358 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3359
3360 loc = srel->contents;
3361 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3362 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3363 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3364 }
3365
3366 /* Store an entry for target address TARGET_ADDR in the linkage table
3367 and return the gp-relative address of the linkage table entry. */
3368
3369 static bfd_vma
3370 set_got_entry (abfd, info, dyn_i, dynindx, addend, value, dyn_r_type)
3371 bfd *abfd;
3372 struct bfd_link_info *info;
3373 struct elfNN_ia64_dyn_sym_info *dyn_i;
3374 long dynindx;
3375 bfd_vma addend;
3376 bfd_vma value;
3377 unsigned int dyn_r_type;
3378 {
3379 struct elfNN_ia64_link_hash_table *ia64_info;
3380 asection *got_sec;
3381 bfd_boolean done;
3382 bfd_vma got_offset;
3383
3384 ia64_info = elfNN_ia64_hash_table (info);
3385 got_sec = ia64_info->got_sec;
3386
3387 switch (dyn_r_type)
3388 {
3389 case R_IA64_TPREL64LSB:
3390 done = dyn_i->tprel_done;
3391 dyn_i->tprel_done = TRUE;
3392 got_offset = dyn_i->tprel_offset;
3393 break;
3394 case R_IA64_DTPMOD64LSB:
3395 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3396 {
3397 done = dyn_i->dtpmod_done;
3398 dyn_i->dtpmod_done = TRUE;
3399 }
3400 else
3401 {
3402 done = ia64_info->self_dtpmod_done;
3403 ia64_info->self_dtpmod_done = TRUE;
3404 dynindx = 0;
3405 }
3406 got_offset = dyn_i->dtpmod_offset;
3407 break;
3408 case R_IA64_DTPREL64LSB:
3409 done = dyn_i->dtprel_done;
3410 dyn_i->dtprel_done = TRUE;
3411 got_offset = dyn_i->dtprel_offset;
3412 break;
3413 default:
3414 done = dyn_i->got_done;
3415 dyn_i->got_done = TRUE;
3416 got_offset = dyn_i->got_offset;
3417 break;
3418 }
3419
3420 BFD_ASSERT ((got_offset & 7) == 0);
3421
3422 if (! done)
3423 {
3424 /* Store the target address in the linkage table entry. */
3425 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3426
3427 /* Install a dynamic relocation if needed. */
3428 if (((info->shared
3429 && (!dyn_i->h
3430 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3431 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3432 && dyn_r_type != R_IA64_DTPREL64LSB)
3433 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3434 || (dynindx != -1 && dyn_r_type == R_IA64_FPTR64LSB))
3435 && (!dyn_i->want_ltoff_fptr
3436 || !info->pie
3437 || !dyn_i->h
3438 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3439 {
3440 if (dynindx == -1
3441 && dyn_r_type != R_IA64_TPREL64LSB
3442 && dyn_r_type != R_IA64_DTPMOD64LSB
3443 && dyn_r_type != R_IA64_DTPREL64LSB)
3444 {
3445 dyn_r_type = R_IA64_REL64LSB;
3446 dynindx = 0;
3447 addend = value;
3448 }
3449
3450 if (bfd_big_endian (abfd))
3451 {
3452 switch (dyn_r_type)
3453 {
3454 case R_IA64_REL64LSB:
3455 dyn_r_type = R_IA64_REL64MSB;
3456 break;
3457 case R_IA64_DIR64LSB:
3458 dyn_r_type = R_IA64_DIR64MSB;
3459 break;
3460 case R_IA64_FPTR64LSB:
3461 dyn_r_type = R_IA64_FPTR64MSB;
3462 break;
3463 case R_IA64_TPREL64LSB:
3464 dyn_r_type = R_IA64_TPREL64MSB;
3465 break;
3466 case R_IA64_DTPMOD64LSB:
3467 dyn_r_type = R_IA64_DTPMOD64MSB;
3468 break;
3469 case R_IA64_DTPREL64LSB:
3470 dyn_r_type = R_IA64_DTPREL64MSB;
3471 break;
3472 default:
3473 BFD_ASSERT (FALSE);
3474 break;
3475 }
3476 }
3477
3478 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3479 ia64_info->rel_got_sec,
3480 got_offset, dyn_r_type,
3481 dynindx, addend);
3482 }
3483 }
3484
3485 /* Return the address of the linkage table entry. */
3486 value = (got_sec->output_section->vma
3487 + got_sec->output_offset
3488 + got_offset);
3489
3490 return value;
3491 }
3492
3493 /* Fill in a function descriptor consisting of the function's code
3494 address and its global pointer. Return the descriptor's address. */
3495
3496 static bfd_vma
3497 set_fptr_entry (abfd, info, dyn_i, value)
3498 bfd *abfd;
3499 struct bfd_link_info *info;
3500 struct elfNN_ia64_dyn_sym_info *dyn_i;
3501 bfd_vma value;
3502 {
3503 struct elfNN_ia64_link_hash_table *ia64_info;
3504 asection *fptr_sec;
3505
3506 ia64_info = elfNN_ia64_hash_table (info);
3507 fptr_sec = ia64_info->fptr_sec;
3508
3509 if (!dyn_i->fptr_done)
3510 {
3511 dyn_i->fptr_done = 1;
3512
3513 /* Fill in the function descriptor. */
3514 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3515 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3516 fptr_sec->contents + dyn_i->fptr_offset + 8);
3517 if (ia64_info->rel_fptr_sec)
3518 {
3519 Elf_Internal_Rela outrel;
3520 bfd_byte *loc;
3521
3522 if (bfd_little_endian (abfd))
3523 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3524 else
3525 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3526 outrel.r_addend = value;
3527 outrel.r_offset = (fptr_sec->output_section->vma
3528 + fptr_sec->output_offset
3529 + dyn_i->fptr_offset);
3530 loc = ia64_info->rel_fptr_sec->contents;
3531 loc += ia64_info->rel_fptr_sec->reloc_count++
3532 * sizeof (ElfNN_External_Rela);
3533 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3534 }
3535 }
3536
3537 /* Return the descriptor's address. */
3538 value = (fptr_sec->output_section->vma
3539 + fptr_sec->output_offset
3540 + dyn_i->fptr_offset);
3541
3542 return value;
3543 }
3544
3545 /* Fill in a PLTOFF entry consisting of the function's code address
3546 and its global pointer. Return the descriptor's address. */
3547
3548 static bfd_vma
3549 set_pltoff_entry (abfd, info, dyn_i, value, is_plt)
3550 bfd *abfd;
3551 struct bfd_link_info *info;
3552 struct elfNN_ia64_dyn_sym_info *dyn_i;
3553 bfd_vma value;
3554 bfd_boolean is_plt;
3555 {
3556 struct elfNN_ia64_link_hash_table *ia64_info;
3557 asection *pltoff_sec;
3558
3559 ia64_info = elfNN_ia64_hash_table (info);
3560 pltoff_sec = ia64_info->pltoff_sec;
3561
3562 /* Don't do anything if this symbol uses a real PLT entry. In
3563 that case, we'll fill this in during finish_dynamic_symbol. */
3564 if ((! dyn_i->want_plt || is_plt)
3565 && !dyn_i->pltoff_done)
3566 {
3567 bfd_vma gp = _bfd_get_gp_value (abfd);
3568
3569 /* Fill in the function descriptor. */
3570 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3571 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3572
3573 /* Install dynamic relocations if needed. */
3574 if (!is_plt
3575 && info->shared
3576 && (!dyn_i->h
3577 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3578 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3579 {
3580 unsigned int dyn_r_type;
3581
3582 if (bfd_big_endian (abfd))
3583 dyn_r_type = R_IA64_REL64MSB;
3584 else
3585 dyn_r_type = R_IA64_REL64LSB;
3586
3587 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3588 ia64_info->rel_pltoff_sec,
3589 dyn_i->pltoff_offset,
3590 dyn_r_type, 0, value);
3591 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3592 ia64_info->rel_pltoff_sec,
3593 dyn_i->pltoff_offset + 8,
3594 dyn_r_type, 0, gp);
3595 }
3596
3597 dyn_i->pltoff_done = 1;
3598 }
3599
3600 /* Return the descriptor's address. */
3601 value = (pltoff_sec->output_section->vma
3602 + pltoff_sec->output_offset
3603 + dyn_i->pltoff_offset);
3604
3605 return value;
3606 }
3607
3608 /* Return the base VMA address which should be subtracted from real addresses
3609 when resolving @tprel() relocation.
3610 Main program TLS (whose template starts at PT_TLS p_vaddr)
3611 is assigned offset round(16, PT_TLS p_align). */
3612
3613 static bfd_vma
3614 elfNN_ia64_tprel_base (info)
3615 struct bfd_link_info *info;
3616 {
3617 asection *tls_sec = elf_hash_table (info)->tls_sec;
3618
3619 BFD_ASSERT (tls_sec != NULL);
3620 return tls_sec->vma - align_power ((bfd_vma) 16, tls_sec->alignment_power);
3621 }
3622
3623 /* Return the base VMA address which should be subtracted from real addresses
3624 when resolving @dtprel() relocation.
3625 This is PT_TLS segment p_vaddr. */
3626
3627 static bfd_vma
3628 elfNN_ia64_dtprel_base (info)
3629 struct bfd_link_info *info;
3630 {
3631 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
3632 return elf_hash_table (info)->tls_sec->vma;
3633 }
3634
3635 /* Called through qsort to sort the .IA_64.unwind section during a
3636 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3637 to the output bfd so we can do proper endianness frobbing. */
3638
3639 static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3640
3641 static int
3642 elfNN_ia64_unwind_entry_compare (a, b)
3643 const PTR a;
3644 const PTR b;
3645 {
3646 bfd_vma av, bv;
3647
3648 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3649 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3650
3651 return (av < bv ? -1 : av > bv ? 1 : 0);
3652 }
3653
3654 /* Make sure we've got ourselves a nice fat __gp value. */
3655 static bfd_boolean
3656 elfNN_ia64_choose_gp (abfd, info)
3657 bfd *abfd;
3658 struct bfd_link_info *info;
3659 {
3660 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3661 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3662 struct elf_link_hash_entry *gp;
3663 bfd_vma gp_val;
3664 asection *os;
3665 struct elfNN_ia64_link_hash_table *ia64_info;
3666
3667 ia64_info = elfNN_ia64_hash_table (info);
3668
3669 /* Find the min and max vma of all sections marked short. Also collect
3670 min and max vma of any type, for use in selecting a nice gp. */
3671 for (os = abfd->sections; os ; os = os->next)
3672 {
3673 bfd_vma lo, hi;
3674
3675 if ((os->flags & SEC_ALLOC) == 0)
3676 continue;
3677
3678 lo = os->vma;
3679 hi = os->vma + os->size;
3680 if (hi < lo)
3681 hi = (bfd_vma) -1;
3682
3683 if (min_vma > lo)
3684 min_vma = lo;
3685 if (max_vma < hi)
3686 max_vma = hi;
3687 if (os->flags & SEC_SMALL_DATA)
3688 {
3689 if (min_short_vma > lo)
3690 min_short_vma = lo;
3691 if (max_short_vma < hi)
3692 max_short_vma = hi;
3693 }
3694 }
3695
3696 /* See if the user wants to force a value. */
3697 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3698 FALSE, FALSE);
3699
3700 if (gp
3701 && (gp->root.type == bfd_link_hash_defined
3702 || gp->root.type == bfd_link_hash_defweak))
3703 {
3704 asection *gp_sec = gp->root.u.def.section;
3705 gp_val = (gp->root.u.def.value
3706 + gp_sec->output_section->vma
3707 + gp_sec->output_offset);
3708 }
3709 else
3710 {
3711 /* Pick a sensible value. */
3712
3713 asection *got_sec = ia64_info->got_sec;
3714
3715 /* Start with just the address of the .got. */
3716 if (got_sec)
3717 gp_val = got_sec->output_section->vma;
3718 else if (max_short_vma != 0)
3719 gp_val = min_short_vma;
3720 else
3721 gp_val = min_vma;
3722
3723 /* If it is possible to address the entire image, but we
3724 don't with the choice above, adjust. */
3725 if (max_vma - min_vma < 0x400000
3726 && max_vma - gp_val <= 0x200000
3727 && gp_val - min_vma > 0x200000)
3728 gp_val = min_vma + 0x200000;
3729 else if (max_short_vma != 0)
3730 {
3731 /* If we don't cover all the short data, adjust. */
3732 if (max_short_vma - gp_val >= 0x200000)
3733 gp_val = min_short_vma + 0x200000;
3734
3735 /* If we're addressing stuff past the end, adjust back. */
3736 if (gp_val > max_vma)
3737 gp_val = max_vma - 0x200000 + 8;
3738 }
3739 }
3740
3741 /* Validate whether all SHF_IA_64_SHORT sections are within
3742 range of the chosen GP. */
3743
3744 if (max_short_vma != 0)
3745 {
3746 if (max_short_vma - min_short_vma >= 0x400000)
3747 {
3748 (*_bfd_error_handler)
3749 (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3750 bfd_get_filename (abfd),
3751 (unsigned long) (max_short_vma - min_short_vma));
3752 return FALSE;
3753 }
3754 else if ((gp_val > min_short_vma
3755 && gp_val - min_short_vma > 0x200000)
3756 || (gp_val < max_short_vma
3757 && max_short_vma - gp_val >= 0x200000))
3758 {
3759 (*_bfd_error_handler)
3760 (_("%s: __gp does not cover short data segment"),
3761 bfd_get_filename (abfd));
3762 return FALSE;
3763 }
3764 }
3765
3766 _bfd_set_gp_value (abfd, gp_val);
3767
3768 return TRUE;
3769 }
3770
3771 static bfd_boolean
3772 elfNN_ia64_final_link (abfd, info)
3773 bfd *abfd;
3774 struct bfd_link_info *info;
3775 {
3776 struct elfNN_ia64_link_hash_table *ia64_info;
3777 asection *unwind_output_sec;
3778
3779 ia64_info = elfNN_ia64_hash_table (info);
3780
3781 /* Make sure we've got ourselves a nice fat __gp value. */
3782 if (!info->relocatable)
3783 {
3784 bfd_vma gp_val = _bfd_get_gp_value (abfd);
3785 struct elf_link_hash_entry *gp;
3786
3787 if (gp_val == 0)
3788 {
3789 if (! elfNN_ia64_choose_gp (abfd, info))
3790 return FALSE;
3791 gp_val = _bfd_get_gp_value (abfd);
3792 }
3793
3794 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3795 FALSE, FALSE);
3796 if (gp)
3797 {
3798 gp->root.type = bfd_link_hash_defined;
3799 gp->root.u.def.value = gp_val;
3800 gp->root.u.def.section = bfd_abs_section_ptr;
3801 }
3802 }
3803
3804 /* If we're producing a final executable, we need to sort the contents
3805 of the .IA_64.unwind section. Force this section to be relocated
3806 into memory rather than written immediately to the output file. */
3807 unwind_output_sec = NULL;
3808 if (!info->relocatable)
3809 {
3810 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
3811 if (s)
3812 {
3813 unwind_output_sec = s->output_section;
3814 unwind_output_sec->contents
3815 = bfd_malloc (unwind_output_sec->size);
3816 if (unwind_output_sec->contents == NULL)
3817 return FALSE;
3818 }
3819 }
3820
3821 /* Invoke the regular ELF backend linker to do all the work. */
3822 if (!bfd_elf_final_link (abfd, info))
3823 return FALSE;
3824
3825 if (unwind_output_sec)
3826 {
3827 elfNN_ia64_unwind_entry_compare_bfd = abfd;
3828 qsort (unwind_output_sec->contents,
3829 (size_t) (unwind_output_sec->size / 24),
3830 24,
3831 elfNN_ia64_unwind_entry_compare);
3832
3833 if (! bfd_set_section_contents (abfd, unwind_output_sec,
3834 unwind_output_sec->contents, (bfd_vma) 0,
3835 unwind_output_sec->size))
3836 return FALSE;
3837 }
3838
3839 return TRUE;
3840 }
3841
3842 static bfd_boolean
3843 elfNN_ia64_relocate_section (output_bfd, info, input_bfd, input_section,
3844 contents, relocs, local_syms, local_sections)
3845 bfd *output_bfd;
3846 struct bfd_link_info *info;
3847 bfd *input_bfd;
3848 asection *input_section;
3849 bfd_byte *contents;
3850 Elf_Internal_Rela *relocs;
3851 Elf_Internal_Sym *local_syms;
3852 asection **local_sections;
3853 {
3854 struct elfNN_ia64_link_hash_table *ia64_info;
3855 Elf_Internal_Shdr *symtab_hdr;
3856 Elf_Internal_Rela *rel;
3857 Elf_Internal_Rela *relend;
3858 asection *srel;
3859 bfd_boolean ret_val = TRUE; /* for non-fatal errors */
3860 bfd_vma gp_val;
3861
3862 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3863 ia64_info = elfNN_ia64_hash_table (info);
3864
3865 /* Infect various flags from the input section to the output section. */
3866 if (info->relocatable)
3867 {
3868 bfd_vma flags;
3869
3870 flags = elf_section_data(input_section)->this_hdr.sh_flags;
3871 flags &= SHF_IA_64_NORECOV;
3872
3873 elf_section_data(input_section->output_section)
3874 ->this_hdr.sh_flags |= flags;
3875 return TRUE;
3876 }
3877
3878 gp_val = _bfd_get_gp_value (output_bfd);
3879 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
3880
3881 rel = relocs;
3882 relend = relocs + input_section->reloc_count;
3883 for (; rel < relend; ++rel)
3884 {
3885 struct elf_link_hash_entry *h;
3886 struct elfNN_ia64_dyn_sym_info *dyn_i;
3887 bfd_reloc_status_type r;
3888 reloc_howto_type *howto;
3889 unsigned long r_symndx;
3890 Elf_Internal_Sym *sym;
3891 unsigned int r_type;
3892 bfd_vma value;
3893 asection *sym_sec;
3894 bfd_byte *hit_addr;
3895 bfd_boolean dynamic_symbol_p;
3896 bfd_boolean undef_weak_ref;
3897
3898 r_type = ELFNN_R_TYPE (rel->r_info);
3899 if (r_type > R_IA64_MAX_RELOC_CODE)
3900 {
3901 (*_bfd_error_handler)
3902 (_("%B: unknown relocation type %d"),
3903 input_bfd, (int) r_type);
3904 bfd_set_error (bfd_error_bad_value);
3905 ret_val = FALSE;
3906 continue;
3907 }
3908
3909 howto = lookup_howto (r_type);
3910 r_symndx = ELFNN_R_SYM (rel->r_info);
3911 h = NULL;
3912 sym = NULL;
3913 sym_sec = NULL;
3914 undef_weak_ref = FALSE;
3915
3916 if (r_symndx < symtab_hdr->sh_info)
3917 {
3918 /* Reloc against local symbol. */
3919 asection *msec;
3920 sym = local_syms + r_symndx;
3921 sym_sec = local_sections[r_symndx];
3922 msec = sym_sec;
3923 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
3924 if ((sym_sec->flags & SEC_MERGE)
3925 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3926 && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE)
3927 {
3928 struct elfNN_ia64_local_hash_entry *loc_h;
3929
3930 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
3931 if (loc_h && ! loc_h->sec_merge_done)
3932 {
3933 struct elfNN_ia64_dyn_sym_info *dynent;
3934
3935 for (dynent = loc_h->info; dynent; dynent = dynent->next)
3936 {
3937 msec = sym_sec;
3938 dynent->addend =
3939 _bfd_merged_section_offset (output_bfd, &msec,
3940 elf_section_data (msec)->
3941 sec_info,
3942 sym->st_value
3943 + dynent->addend);
3944 dynent->addend -= sym->st_value;
3945 dynent->addend += msec->output_section->vma
3946 + msec->output_offset
3947 - sym_sec->output_section->vma
3948 - sym_sec->output_offset;
3949 }
3950 loc_h->sec_merge_done = 1;
3951 }
3952 }
3953 }
3954 else
3955 {
3956 bfd_boolean unresolved_reloc;
3957 bfd_boolean warned;
3958 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3959
3960 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3961 r_symndx, symtab_hdr, sym_hashes,
3962 h, sym_sec, value,
3963 unresolved_reloc, warned);
3964
3965 if (h->root.type == bfd_link_hash_undefweak)
3966 undef_weak_ref = TRUE;
3967 else if (warned)
3968 continue;
3969 }
3970
3971 hit_addr = contents + rel->r_offset;
3972 value += rel->r_addend;
3973 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
3974
3975 switch (r_type)
3976 {
3977 case R_IA64_NONE:
3978 case R_IA64_LDXMOV:
3979 continue;
3980
3981 case R_IA64_IMM14:
3982 case R_IA64_IMM22:
3983 case R_IA64_IMM64:
3984 case R_IA64_DIR32MSB:
3985 case R_IA64_DIR32LSB:
3986 case R_IA64_DIR64MSB:
3987 case R_IA64_DIR64LSB:
3988 /* Install a dynamic relocation for this reloc. */
3989 if ((dynamic_symbol_p || info->shared)
3990 && r_symndx != 0
3991 && (input_section->flags & SEC_ALLOC) != 0)
3992 {
3993 unsigned int dyn_r_type;
3994 long dynindx;
3995 bfd_vma addend;
3996
3997 BFD_ASSERT (srel != NULL);
3998
3999 switch (r_type)
4000 {
4001 case R_IA64_IMM14:
4002 case R_IA64_IMM22:
4003 case R_IA64_IMM64:
4004 /* ??? People shouldn't be doing non-pic code in
4005 shared libraries nor dynamic executables. */
4006 (*_bfd_error_handler)
4007 (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
4008 input_bfd,
4009 h->root.root.string);
4010 ret_val = FALSE;
4011 continue;
4012
4013 default:
4014 break;
4015 }
4016
4017 /* If we don't need dynamic symbol lookup, find a
4018 matching RELATIVE relocation. */
4019 dyn_r_type = r_type;
4020 if (dynamic_symbol_p)
4021 {
4022 dynindx = h->dynindx;
4023 addend = rel->r_addend;
4024 value = 0;
4025 }
4026 else
4027 {
4028 switch (r_type)
4029 {
4030 case R_IA64_DIR32MSB:
4031 dyn_r_type = R_IA64_REL32MSB;
4032 break;
4033 case R_IA64_DIR32LSB:
4034 dyn_r_type = R_IA64_REL32LSB;
4035 break;
4036 case R_IA64_DIR64MSB:
4037 dyn_r_type = R_IA64_REL64MSB;
4038 break;
4039 case R_IA64_DIR64LSB:
4040 dyn_r_type = R_IA64_REL64LSB;
4041 break;
4042
4043 default:
4044 break;
4045 }
4046 dynindx = 0;
4047 addend = value;
4048 }
4049
4050 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4051 srel, rel->r_offset, dyn_r_type,
4052 dynindx, addend);
4053 }
4054 /* Fall through. */
4055
4056 case R_IA64_LTV32MSB:
4057 case R_IA64_LTV32LSB:
4058 case R_IA64_LTV64MSB:
4059 case R_IA64_LTV64LSB:
4060 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4061 break;
4062
4063 case R_IA64_GPREL22:
4064 case R_IA64_GPREL64I:
4065 case R_IA64_GPREL32MSB:
4066 case R_IA64_GPREL32LSB:
4067 case R_IA64_GPREL64MSB:
4068 case R_IA64_GPREL64LSB:
4069 if (dynamic_symbol_p)
4070 {
4071 (*_bfd_error_handler)
4072 (_("%B: @gprel relocation against dynamic symbol %s"),
4073 input_bfd, h->root.root.string);
4074 ret_val = FALSE;
4075 continue;
4076 }
4077 value -= gp_val;
4078 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4079 break;
4080
4081 case R_IA64_LTOFF22:
4082 case R_IA64_LTOFF22X:
4083 case R_IA64_LTOFF64I:
4084 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4085 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4086 rel->r_addend, value, R_IA64_DIR64LSB);
4087 value -= gp_val;
4088 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4089 break;
4090
4091 case R_IA64_PLTOFF22:
4092 case R_IA64_PLTOFF64I:
4093 case R_IA64_PLTOFF64MSB:
4094 case R_IA64_PLTOFF64LSB:
4095 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4096 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4097 value -= gp_val;
4098 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4099 break;
4100
4101 case R_IA64_FPTR64I:
4102 case R_IA64_FPTR32MSB:
4103 case R_IA64_FPTR32LSB:
4104 case R_IA64_FPTR64MSB:
4105 case R_IA64_FPTR64LSB:
4106 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4107 if (dyn_i->want_fptr)
4108 {
4109 if (!undef_weak_ref)
4110 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4111 }
4112 if (!dyn_i->want_fptr || info->pie)
4113 {
4114 long dynindx;
4115 unsigned int dyn_r_type = r_type;
4116 bfd_vma addend = rel->r_addend;
4117
4118 /* Otherwise, we expect the dynamic linker to create
4119 the entry. */
4120
4121 if (dyn_i->want_fptr)
4122 {
4123 if (r_type == R_IA64_FPTR64I)
4124 {
4125 /* We can't represent this without a dynamic symbol.
4126 Adjust the relocation to be against an output
4127 section symbol, which are always present in the
4128 dynamic symbol table. */
4129 /* ??? People shouldn't be doing non-pic code in
4130 shared libraries. Hork. */
4131 (*_bfd_error_handler)
4132 (_("%B: linking non-pic code in a position independent executable"),
4133 input_bfd);
4134 ret_val = FALSE;
4135 continue;
4136 }
4137 dynindx = 0;
4138 addend = value;
4139 dyn_r_type = r_type + R_IA64_REL64LSB - R_IA64_FPTR64LSB;
4140 }
4141 else if (h)
4142 {
4143 if (h->dynindx != -1)
4144 dynindx = h->dynindx;
4145 else
4146 dynindx = (_bfd_elf_link_lookup_local_dynindx
4147 (info, h->root.u.def.section->owner,
4148 global_sym_index (h)));
4149 value = 0;
4150 }
4151 else
4152 {
4153 dynindx = (_bfd_elf_link_lookup_local_dynindx
4154 (info, input_bfd, (long) r_symndx));
4155 value = 0;
4156 }
4157
4158 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4159 srel, rel->r_offset, dyn_r_type,
4160 dynindx, addend);
4161 }
4162
4163 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4164 break;
4165
4166 case R_IA64_LTOFF_FPTR22:
4167 case R_IA64_LTOFF_FPTR64I:
4168 case R_IA64_LTOFF_FPTR32MSB:
4169 case R_IA64_LTOFF_FPTR32LSB:
4170 case R_IA64_LTOFF_FPTR64MSB:
4171 case R_IA64_LTOFF_FPTR64LSB:
4172 {
4173 long dynindx;
4174
4175 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4176 if (dyn_i->want_fptr)
4177 {
4178 BFD_ASSERT (h == NULL || h->dynindx == -1);
4179 if (!undef_weak_ref)
4180 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4181 dynindx = -1;
4182 }
4183 else
4184 {
4185 /* Otherwise, we expect the dynamic linker to create
4186 the entry. */
4187 if (h)
4188 {
4189 if (h->dynindx != -1)
4190 dynindx = h->dynindx;
4191 else
4192 dynindx = (_bfd_elf_link_lookup_local_dynindx
4193 (info, h->root.u.def.section->owner,
4194 global_sym_index (h)));
4195 }
4196 else
4197 dynindx = (_bfd_elf_link_lookup_local_dynindx
4198 (info, input_bfd, (long) r_symndx));
4199 value = 0;
4200 }
4201
4202 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4203 rel->r_addend, value, R_IA64_FPTR64LSB);
4204 value -= gp_val;
4205 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4206 }
4207 break;
4208
4209 case R_IA64_PCREL32MSB:
4210 case R_IA64_PCREL32LSB:
4211 case R_IA64_PCREL64MSB:
4212 case R_IA64_PCREL64LSB:
4213 /* Install a dynamic relocation for this reloc. */
4214 if (dynamic_symbol_p && r_symndx != 0)
4215 {
4216 BFD_ASSERT (srel != NULL);
4217
4218 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4219 srel, rel->r_offset, r_type,
4220 h->dynindx, rel->r_addend);
4221 }
4222 goto finish_pcrel;
4223
4224 case R_IA64_PCREL21B:
4225 case R_IA64_PCREL60B:
4226 /* We should have created a PLT entry for any dynamic symbol. */
4227 dyn_i = NULL;
4228 if (h)
4229 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4230
4231 if (dyn_i && dyn_i->want_plt2)
4232 {
4233 /* Should have caught this earlier. */
4234 BFD_ASSERT (rel->r_addend == 0);
4235
4236 value = (ia64_info->plt_sec->output_section->vma
4237 + ia64_info->plt_sec->output_offset
4238 + dyn_i->plt2_offset);
4239 }
4240 else
4241 {
4242 /* Since there's no PLT entry, Validate that this is
4243 locally defined. */
4244 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4245
4246 /* If the symbol is undef_weak, we shouldn't be trying
4247 to call it. There's every chance that we'd wind up
4248 with an out-of-range fixup here. Don't bother setting
4249 any value at all. */
4250 if (undef_weak_ref)
4251 continue;
4252 }
4253 goto finish_pcrel;
4254
4255 case R_IA64_PCREL21BI:
4256 case R_IA64_PCREL21F:
4257 case R_IA64_PCREL21M:
4258 case R_IA64_PCREL22:
4259 case R_IA64_PCREL64I:
4260 /* The PCREL21BI reloc is specifically not intended for use with
4261 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4262 fixup code, and thus probably ought not be dynamic. The
4263 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4264 if (dynamic_symbol_p)
4265 {
4266 const char *msg;
4267
4268 if (r_type == R_IA64_PCREL21BI)
4269 msg = _("%B: @internal branch to dynamic symbol %s");
4270 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4271 msg = _("%B: speculation fixup to dynamic symbol %s");
4272 else
4273 msg = _("%B: @pcrel relocation against dynamic symbol %s");
4274 (*_bfd_error_handler) (msg, input_bfd, h->root.root.string);
4275 ret_val = FALSE;
4276 continue;
4277 }
4278 goto finish_pcrel;
4279
4280 finish_pcrel:
4281 /* Make pc-relative. */
4282 value -= (input_section->output_section->vma
4283 + input_section->output_offset
4284 + rel->r_offset) & ~ (bfd_vma) 0x3;
4285 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4286 break;
4287
4288 case R_IA64_SEGREL32MSB:
4289 case R_IA64_SEGREL32LSB:
4290 case R_IA64_SEGREL64MSB:
4291 case R_IA64_SEGREL64LSB:
4292 if (r_symndx == 0)
4293 {
4294 /* If the input section was discarded from the output, then
4295 do nothing. */
4296 r = bfd_reloc_ok;
4297 }
4298 else
4299 {
4300 struct elf_segment_map *m;
4301 Elf_Internal_Phdr *p;
4302
4303 /* Find the segment that contains the output_section. */
4304 for (m = elf_tdata (output_bfd)->segment_map,
4305 p = elf_tdata (output_bfd)->phdr;
4306 m != NULL;
4307 m = m->next, p++)
4308 {
4309 int i;
4310 for (i = m->count - 1; i >= 0; i--)
4311 if (m->sections[i] == input_section->output_section)
4312 break;
4313 if (i >= 0)
4314 break;
4315 }
4316
4317 if (m == NULL)
4318 {
4319 r = bfd_reloc_notsupported;
4320 }
4321 else
4322 {
4323 /* The VMA of the segment is the vaddr of the associated
4324 program header. */
4325 if (value > p->p_vaddr)
4326 value -= p->p_vaddr;
4327 else
4328 value = 0;
4329 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4330 }
4331 break;
4332 }
4333
4334 case R_IA64_SECREL32MSB:
4335 case R_IA64_SECREL32LSB:
4336 case R_IA64_SECREL64MSB:
4337 case R_IA64_SECREL64LSB:
4338 /* Make output-section relative to section where the symbol
4339 is defined. PR 475 */
4340 if (sym_sec)
4341 value -= sym_sec->output_section->vma;
4342 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4343 break;
4344
4345 case R_IA64_IPLTMSB:
4346 case R_IA64_IPLTLSB:
4347 /* Install a dynamic relocation for this reloc. */
4348 if ((dynamic_symbol_p || info->shared)
4349 && (input_section->flags & SEC_ALLOC) != 0)
4350 {
4351 BFD_ASSERT (srel != NULL);
4352
4353 /* If we don't need dynamic symbol lookup, install two
4354 RELATIVE relocations. */
4355 if (!dynamic_symbol_p)
4356 {
4357 unsigned int dyn_r_type;
4358
4359 if (r_type == R_IA64_IPLTMSB)
4360 dyn_r_type = R_IA64_REL64MSB;
4361 else
4362 dyn_r_type = R_IA64_REL64LSB;
4363
4364 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4365 input_section,
4366 srel, rel->r_offset,
4367 dyn_r_type, 0, value);
4368 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4369 input_section,
4370 srel, rel->r_offset + 8,
4371 dyn_r_type, 0, gp_val);
4372 }
4373 else
4374 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4375 srel, rel->r_offset, r_type,
4376 h->dynindx, rel->r_addend);
4377 }
4378
4379 if (r_type == R_IA64_IPLTMSB)
4380 r_type = R_IA64_DIR64MSB;
4381 else
4382 r_type = R_IA64_DIR64LSB;
4383 elfNN_ia64_install_value (hit_addr, value, r_type);
4384 r = elfNN_ia64_install_value (hit_addr + 8, gp_val, r_type);
4385 break;
4386
4387 case R_IA64_TPREL14:
4388 case R_IA64_TPREL22:
4389 case R_IA64_TPREL64I:
4390 value -= elfNN_ia64_tprel_base (info);
4391 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4392 break;
4393
4394 case R_IA64_DTPREL14:
4395 case R_IA64_DTPREL22:
4396 case R_IA64_DTPREL64I:
4397 case R_IA64_DTPREL64LSB:
4398 case R_IA64_DTPREL64MSB:
4399 value -= elfNN_ia64_dtprel_base (info);
4400 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4401 break;
4402
4403 case R_IA64_LTOFF_TPREL22:
4404 case R_IA64_LTOFF_DTPMOD22:
4405 case R_IA64_LTOFF_DTPREL22:
4406 {
4407 int got_r_type;
4408 long dynindx = h ? h->dynindx : -1;
4409 bfd_vma r_addend = rel->r_addend;
4410
4411 switch (r_type)
4412 {
4413 default:
4414 case R_IA64_LTOFF_TPREL22:
4415 if (!dynamic_symbol_p)
4416 {
4417 if (!info->shared)
4418 value -= elfNN_ia64_tprel_base (info);
4419 else
4420 {
4421 r_addend += value - elfNN_ia64_dtprel_base (info);
4422 dynindx = 0;
4423 }
4424 }
4425 got_r_type = R_IA64_TPREL64LSB;
4426 break;
4427 case R_IA64_LTOFF_DTPMOD22:
4428 if (!dynamic_symbol_p && !info->shared)
4429 value = 1;
4430 got_r_type = R_IA64_DTPMOD64LSB;
4431 break;
4432 case R_IA64_LTOFF_DTPREL22:
4433 if (!dynamic_symbol_p)
4434 value -= elfNN_ia64_dtprel_base (info);
4435 got_r_type = R_IA64_DTPREL64LSB;
4436 break;
4437 }
4438 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4439 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4440 value, got_r_type);
4441 value -= gp_val;
4442 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4443 }
4444 break;
4445
4446 default:
4447 r = bfd_reloc_notsupported;
4448 break;
4449 }
4450
4451 switch (r)
4452 {
4453 case bfd_reloc_ok:
4454 break;
4455
4456 case bfd_reloc_undefined:
4457 /* This can happen for global table relative relocs if
4458 __gp is undefined. This is a panic situation so we
4459 don't try to continue. */
4460 (*info->callbacks->undefined_symbol)
4461 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4462 return FALSE;
4463
4464 case bfd_reloc_notsupported:
4465 {
4466 const char *name;
4467
4468 if (h)
4469 name = h->root.root.string;
4470 else
4471 {
4472 name = bfd_elf_string_from_elf_section (input_bfd,
4473 symtab_hdr->sh_link,
4474 sym->st_name);
4475 if (name == NULL)
4476 return FALSE;
4477 if (*name == '\0')
4478 name = bfd_section_name (input_bfd, input_section);
4479 }
4480 if (!(*info->callbacks->warning) (info, _("unsupported reloc"),
4481 name, input_bfd,
4482 input_section, rel->r_offset))
4483 return FALSE;
4484 ret_val = FALSE;
4485 }
4486 break;
4487
4488 case bfd_reloc_dangerous:
4489 case bfd_reloc_outofrange:
4490 case bfd_reloc_overflow:
4491 default:
4492 {
4493 const char *name;
4494
4495 if (h)
4496 name = NULL;
4497 else
4498 {
4499 name = bfd_elf_string_from_elf_section (input_bfd,
4500 symtab_hdr->sh_link,
4501 sym->st_name);
4502 if (name == NULL)
4503 return FALSE;
4504 if (*name == '\0')
4505 name = bfd_section_name (input_bfd, sym_sec);
4506 }
4507 if (!(*info->callbacks->reloc_overflow) (info, &h->root,
4508 name, howto->name,
4509 (bfd_vma) 0,
4510 input_bfd,
4511 input_section,
4512 rel->r_offset))
4513 return FALSE;
4514 ret_val = FALSE;
4515 }
4516 break;
4517 }
4518 }
4519
4520 return ret_val;
4521 }
4522
4523 static bfd_boolean
4524 elfNN_ia64_finish_dynamic_symbol (output_bfd, info, h, sym)
4525 bfd *output_bfd;
4526 struct bfd_link_info *info;
4527 struct elf_link_hash_entry *h;
4528 Elf_Internal_Sym *sym;
4529 {
4530 struct elfNN_ia64_link_hash_table *ia64_info;
4531 struct elfNN_ia64_dyn_sym_info *dyn_i;
4532
4533 ia64_info = elfNN_ia64_hash_table (info);
4534 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4535
4536 /* Fill in the PLT data, if required. */
4537 if (dyn_i && dyn_i->want_plt)
4538 {
4539 Elf_Internal_Rela outrel;
4540 bfd_byte *loc;
4541 asection *plt_sec;
4542 bfd_vma plt_addr, pltoff_addr, gp_val, index;
4543
4544 gp_val = _bfd_get_gp_value (output_bfd);
4545
4546 /* Initialize the minimal PLT entry. */
4547
4548 index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4549 plt_sec = ia64_info->plt_sec;
4550 loc = plt_sec->contents + dyn_i->plt_offset;
4551
4552 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4553 elfNN_ia64_install_value (loc, index, R_IA64_IMM22);
4554 elfNN_ia64_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4555
4556 plt_addr = (plt_sec->output_section->vma
4557 + plt_sec->output_offset
4558 + dyn_i->plt_offset);
4559 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4560
4561 /* Initialize the FULL PLT entry, if needed. */
4562 if (dyn_i->want_plt2)
4563 {
4564 loc = plt_sec->contents + dyn_i->plt2_offset;
4565
4566 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4567 elfNN_ia64_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4568
4569 /* Mark the symbol as undefined, rather than as defined in the
4570 plt section. Leave the value alone. */
4571 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4572 first place. But perhaps elflink.c did some for us. */
4573 if (!h->def_regular)
4574 sym->st_shndx = SHN_UNDEF;
4575 }
4576
4577 /* Create the dynamic relocation. */
4578 outrel.r_offset = pltoff_addr;
4579 if (bfd_little_endian (output_bfd))
4580 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4581 else
4582 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4583 outrel.r_addend = 0;
4584
4585 /* This is fun. In the .IA_64.pltoff section, we've got entries
4586 that correspond both to real PLT entries, and those that
4587 happened to resolve to local symbols but need to be created
4588 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4589 relocations for the real PLT should come at the end of the
4590 section, so that they can be indexed by plt entry at runtime.
4591
4592 We emitted all of the relocations for the non-PLT @pltoff
4593 entries during relocate_section. So we can consider the
4594 existing sec->reloc_count to be the base of the array of
4595 PLT relocations. */
4596
4597 loc = ia64_info->rel_pltoff_sec->contents;
4598 loc += ((ia64_info->rel_pltoff_sec->reloc_count + index)
4599 * sizeof (ElfNN_External_Rela));
4600 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4601 }
4602
4603 /* Mark some specially defined symbols as absolute. */
4604 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4605 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
4606 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
4607 sym->st_shndx = SHN_ABS;
4608
4609 return TRUE;
4610 }
4611
4612 static bfd_boolean
4613 elfNN_ia64_finish_dynamic_sections (abfd, info)
4614 bfd *abfd;
4615 struct bfd_link_info *info;
4616 {
4617 struct elfNN_ia64_link_hash_table *ia64_info;
4618 bfd *dynobj;
4619
4620 ia64_info = elfNN_ia64_hash_table (info);
4621 dynobj = ia64_info->root.dynobj;
4622
4623 if (elf_hash_table (info)->dynamic_sections_created)
4624 {
4625 ElfNN_External_Dyn *dyncon, *dynconend;
4626 asection *sdyn, *sgotplt;
4627 bfd_vma gp_val;
4628
4629 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4630 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
4631 BFD_ASSERT (sdyn != NULL);
4632 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4633 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4634
4635 gp_val = _bfd_get_gp_value (abfd);
4636
4637 for (; dyncon < dynconend; dyncon++)
4638 {
4639 Elf_Internal_Dyn dyn;
4640
4641 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4642
4643 switch (dyn.d_tag)
4644 {
4645 case DT_PLTGOT:
4646 dyn.d_un.d_ptr = gp_val;
4647 break;
4648
4649 case DT_PLTRELSZ:
4650 dyn.d_un.d_val = (ia64_info->minplt_entries
4651 * sizeof (ElfNN_External_Rela));
4652 break;
4653
4654 case DT_JMPREL:
4655 /* See the comment above in finish_dynamic_symbol. */
4656 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4657 + ia64_info->rel_pltoff_sec->output_offset
4658 + (ia64_info->rel_pltoff_sec->reloc_count
4659 * sizeof (ElfNN_External_Rela)));
4660 break;
4661
4662 case DT_IA_64_PLT_RESERVE:
4663 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4664 + sgotplt->output_offset);
4665 break;
4666
4667 case DT_RELASZ:
4668 /* Do not have RELASZ include JMPREL. This makes things
4669 easier on ld.so. This is not what the rest of BFD set up. */
4670 dyn.d_un.d_val -= (ia64_info->minplt_entries
4671 * sizeof (ElfNN_External_Rela));
4672 break;
4673 }
4674
4675 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4676 }
4677
4678 /* Initialize the PLT0 entry. */
4679 if (ia64_info->plt_sec)
4680 {
4681 bfd_byte *loc = ia64_info->plt_sec->contents;
4682 bfd_vma pltres;
4683
4684 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4685
4686 pltres = (sgotplt->output_section->vma
4687 + sgotplt->output_offset
4688 - gp_val);
4689
4690 elfNN_ia64_install_value (loc+1, pltres, R_IA64_GPREL22);
4691 }
4692 }
4693
4694 return TRUE;
4695 }
4696 \f
4697 /* ELF file flag handling: */
4698
4699 /* Function to keep IA-64 specific file flags. */
4700 static bfd_boolean
4701 elfNN_ia64_set_private_flags (abfd, flags)
4702 bfd *abfd;
4703 flagword flags;
4704 {
4705 BFD_ASSERT (!elf_flags_init (abfd)
4706 || elf_elfheader (abfd)->e_flags == flags);
4707
4708 elf_elfheader (abfd)->e_flags = flags;
4709 elf_flags_init (abfd) = TRUE;
4710 return TRUE;
4711 }
4712
4713 /* Merge backend specific data from an object file to the output
4714 object file when linking. */
4715 static bfd_boolean
4716 elfNN_ia64_merge_private_bfd_data (ibfd, obfd)
4717 bfd *ibfd, *obfd;
4718 {
4719 flagword out_flags;
4720 flagword in_flags;
4721 bfd_boolean ok = TRUE;
4722
4723 /* Don't even pretend to support mixed-format linking. */
4724 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4725 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4726 return FALSE;
4727
4728 in_flags = elf_elfheader (ibfd)->e_flags;
4729 out_flags = elf_elfheader (obfd)->e_flags;
4730
4731 if (! elf_flags_init (obfd))
4732 {
4733 elf_flags_init (obfd) = TRUE;
4734 elf_elfheader (obfd)->e_flags = in_flags;
4735
4736 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4737 && bfd_get_arch_info (obfd)->the_default)
4738 {
4739 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4740 bfd_get_mach (ibfd));
4741 }
4742
4743 return TRUE;
4744 }
4745
4746 /* Check flag compatibility. */
4747 if (in_flags == out_flags)
4748 return TRUE;
4749
4750 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4751 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4752 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4753
4754 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4755 {
4756 (*_bfd_error_handler)
4757 (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4758 ibfd);
4759
4760 bfd_set_error (bfd_error_bad_value);
4761 ok = FALSE;
4762 }
4763 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
4764 {
4765 (*_bfd_error_handler)
4766 (_("%B: linking big-endian files with little-endian files"),
4767 ibfd);
4768
4769 bfd_set_error (bfd_error_bad_value);
4770 ok = FALSE;
4771 }
4772 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
4773 {
4774 (*_bfd_error_handler)
4775 (_("%B: linking 64-bit files with 32-bit files"),
4776 ibfd);
4777
4778 bfd_set_error (bfd_error_bad_value);
4779 ok = FALSE;
4780 }
4781 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
4782 {
4783 (*_bfd_error_handler)
4784 (_("%B: linking constant-gp files with non-constant-gp files"),
4785 ibfd);
4786
4787 bfd_set_error (bfd_error_bad_value);
4788 ok = FALSE;
4789 }
4790 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
4791 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
4792 {
4793 (*_bfd_error_handler)
4794 (_("%B: linking auto-pic files with non-auto-pic files"),
4795 ibfd);
4796
4797 bfd_set_error (bfd_error_bad_value);
4798 ok = FALSE;
4799 }
4800
4801 return ok;
4802 }
4803
4804 static bfd_boolean
4805 elfNN_ia64_print_private_bfd_data (abfd, ptr)
4806 bfd *abfd;
4807 PTR ptr;
4808 {
4809 FILE *file = (FILE *) ptr;
4810 flagword flags = elf_elfheader (abfd)->e_flags;
4811
4812 BFD_ASSERT (abfd != NULL && ptr != NULL);
4813
4814 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
4815 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
4816 (flags & EF_IA_64_EXT) ? "EXT, " : "",
4817 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
4818 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
4819 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
4820 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
4821 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
4822 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
4823
4824 _bfd_elf_print_private_bfd_data (abfd, ptr);
4825 return TRUE;
4826 }
4827
4828 static enum elf_reloc_type_class
4829 elfNN_ia64_reloc_type_class (rela)
4830 const Elf_Internal_Rela *rela;
4831 {
4832 switch ((int) ELFNN_R_TYPE (rela->r_info))
4833 {
4834 case R_IA64_REL32MSB:
4835 case R_IA64_REL32LSB:
4836 case R_IA64_REL64MSB:
4837 case R_IA64_REL64LSB:
4838 return reloc_class_relative;
4839 case R_IA64_IPLTMSB:
4840 case R_IA64_IPLTLSB:
4841 return reloc_class_plt;
4842 case R_IA64_COPY:
4843 return reloc_class_copy;
4844 default:
4845 return reloc_class_normal;
4846 }
4847 }
4848
4849 static struct bfd_elf_special_section const elfNN_ia64_special_sections[]=
4850 {
4851 { ".sbss", 5, -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4852 { ".sdata", 6, -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
4853 { NULL, 0, 0, 0, 0 }
4854 };
4855
4856 static bfd_boolean
4857 elfNN_ia64_hpux_vec (const bfd_target *vec)
4858 {
4859 extern const bfd_target bfd_elfNN_ia64_hpux_big_vec;
4860 return (vec == & bfd_elfNN_ia64_hpux_big_vec);
4861 }
4862
4863 static void
4864 elfNN_hpux_post_process_headers (abfd, info)
4865 bfd *abfd;
4866 struct bfd_link_info *info ATTRIBUTE_UNUSED;
4867 {
4868 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4869
4870 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
4871 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
4872 }
4873
4874 bfd_boolean
4875 elfNN_hpux_backend_section_from_bfd_section (abfd, sec, retval)
4876 bfd *abfd ATTRIBUTE_UNUSED;
4877 asection *sec;
4878 int *retval;
4879 {
4880 if (bfd_is_com_section (sec))
4881 {
4882 *retval = SHN_IA_64_ANSI_COMMON;
4883 return TRUE;
4884 }
4885 return FALSE;
4886 }
4887
4888 static void
4889 elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4890 asymbol *asym)
4891 {
4892 elf_symbol_type *elfsym = (elf_symbol_type *) asym;;
4893
4894 switch (elfsym->internal_elf_sym.st_shndx)
4895 {
4896 case SHN_IA_64_ANSI_COMMON:
4897 asym->section = bfd_com_section_ptr;
4898 asym->value = elfsym->internal_elf_sym.st_size;
4899 asym->flags &= ~BSF_GLOBAL;
4900 break;
4901 }
4902 }
4903
4904 \f
4905 #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec
4906 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
4907 #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec
4908 #define TARGET_BIG_NAME "elfNN-ia64-big"
4909 #define ELF_ARCH bfd_arch_ia64
4910 #define ELF_MACHINE_CODE EM_IA_64
4911 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
4912 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
4913 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
4914
4915 #define elf_backend_section_from_shdr \
4916 elfNN_ia64_section_from_shdr
4917 #define elf_backend_section_flags \
4918 elfNN_ia64_section_flags
4919 #define elf_backend_fake_sections \
4920 elfNN_ia64_fake_sections
4921 #define elf_backend_final_write_processing \
4922 elfNN_ia64_final_write_processing
4923 #define elf_backend_add_symbol_hook \
4924 elfNN_ia64_add_symbol_hook
4925 #define elf_backend_additional_program_headers \
4926 elfNN_ia64_additional_program_headers
4927 #define elf_backend_modify_segment_map \
4928 elfNN_ia64_modify_segment_map
4929 #define elf_info_to_howto \
4930 elfNN_ia64_info_to_howto
4931
4932 #define bfd_elfNN_bfd_reloc_type_lookup \
4933 elfNN_ia64_reloc_type_lookup
4934 #define bfd_elfNN_bfd_is_local_label_name \
4935 elfNN_ia64_is_local_label_name
4936 #define bfd_elfNN_bfd_relax_section \
4937 elfNN_ia64_relax_section
4938
4939 /* Stuff for the BFD linker: */
4940 #define bfd_elfNN_bfd_link_hash_table_create \
4941 elfNN_ia64_hash_table_create
4942 #define bfd_elfNN_bfd_link_hash_table_free \
4943 elfNN_ia64_hash_table_free
4944 #define elf_backend_create_dynamic_sections \
4945 elfNN_ia64_create_dynamic_sections
4946 #define elf_backend_check_relocs \
4947 elfNN_ia64_check_relocs
4948 #define elf_backend_adjust_dynamic_symbol \
4949 elfNN_ia64_adjust_dynamic_symbol
4950 #define elf_backend_size_dynamic_sections \
4951 elfNN_ia64_size_dynamic_sections
4952 #define elf_backend_relocate_section \
4953 elfNN_ia64_relocate_section
4954 #define elf_backend_finish_dynamic_symbol \
4955 elfNN_ia64_finish_dynamic_symbol
4956 #define elf_backend_finish_dynamic_sections \
4957 elfNN_ia64_finish_dynamic_sections
4958 #define bfd_elfNN_bfd_final_link \
4959 elfNN_ia64_final_link
4960
4961 #define bfd_elfNN_bfd_merge_private_bfd_data \
4962 elfNN_ia64_merge_private_bfd_data
4963 #define bfd_elfNN_bfd_set_private_flags \
4964 elfNN_ia64_set_private_flags
4965 #define bfd_elfNN_bfd_print_private_bfd_data \
4966 elfNN_ia64_print_private_bfd_data
4967
4968 #define elf_backend_plt_readonly 1
4969 #define elf_backend_want_plt_sym 0
4970 #define elf_backend_plt_alignment 5
4971 #define elf_backend_got_header_size 0
4972 #define elf_backend_want_got_plt 1
4973 #define elf_backend_may_use_rel_p 1
4974 #define elf_backend_may_use_rela_p 1
4975 #define elf_backend_default_use_rela_p 1
4976 #define elf_backend_want_dynbss 0
4977 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
4978 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
4979 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
4980 #define elf_backend_rela_normal 1
4981 #define elf_backend_special_sections elfNN_ia64_special_sections
4982
4983 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
4984 SHF_LINK_ORDER. But it doesn't set theh sh_link or sh_info fields.
4985 We don't want to flood users with so many error messages. We turn
4986 off the warning for now. It will be turned on later when the Intel
4987 compiler is fixed. */
4988 #define elf_backend_link_order_error_handler NULL
4989
4990 #include "elfNN-target.h"
4991
4992 /* HPUX-specific vectors. */
4993
4994 #undef TARGET_LITTLE_SYM
4995 #undef TARGET_LITTLE_NAME
4996 #undef TARGET_BIG_SYM
4997 #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec
4998 #undef TARGET_BIG_NAME
4999 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5000
5001 /* These are HP-UX specific functions. */
5002
5003 #undef elf_backend_post_process_headers
5004 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5005
5006 #undef elf_backend_section_from_bfd_section
5007 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5008
5009 #undef elf_backend_symbol_processing
5010 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5011
5012 #undef elf_backend_want_p_paddr_set_to_zero
5013 #define elf_backend_want_p_paddr_set_to_zero 1
5014
5015 #undef ELF_MAXPAGESIZE
5016 #define ELF_MAXPAGESIZE 0x1000 /* 1K */
5017
5018 #undef elfNN_bed
5019 #define elfNN_bed elfNN_ia64_hpux_bed
5020
5021 #include "elfNN-target.h"
5022
5023 #undef elf_backend_want_p_paddr_set_to_zero
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