* elf.c (sym_is_global): Return a bfd_boolean.
[binutils.git] / bfd / elfxx-ia64.c
blobf0bb0fa60ad67e5bb16d311b4398d501ad027005
1 /* IA-64 support for 64-bit ELF
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
3 Free Software Foundation, Inc.
4 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
6 This file is part of BFD, the Binary File Descriptor library.
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.
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.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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"
31 #define ARCH_SIZE NN
33 #if ARCH_SIZE == 64
34 #define LOG_SECTION_ALIGN 3
35 #endif
37 #if ARCH_SIZE == 32
38 #define LOG_SECTION_ALIGN 2
39 #endif
41 /* THE RULES for all the stuff the linker creates --
43 GOT Entries created in response to LTOFF or LTOFF_FPTR
44 relocations. Dynamic relocs created for dynamic
45 symbols in an application; REL relocs for locals
46 in a shared library.
48 FPTR The canonical function descriptor. Created for local
49 symbols in applications. Descriptors for dynamic symbols
50 and local symbols in shared libraries are created by
51 ld.so. Thus there are no dynamic relocs against these
52 objects. The FPTR relocs for such _are_ passed through
53 to the dynamic relocation tables.
55 FULL_PLT Created for a PCREL21B relocation against a dynamic symbol.
56 Requires the creation of a PLTOFF entry. This does not
57 require any dynamic relocations.
59 PLTOFF Created by PLTOFF relocations. For local symbols, this
60 is an alternate function descriptor, and in shared libraries
61 requires two REL relocations. Note that this cannot be
62 transformed into an FPTR relocation, since it must be in
63 range of the GP. For dynamic symbols, this is a function
64 descriptor for a MIN_PLT entry, and requires one IPLT reloc.
66 MIN_PLT Created by PLTOFF entries against dynamic symbols. This
67 does not require dynamic relocations. */
69 #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
71 typedef struct bfd_hash_entry *(*new_hash_entry_func)
72 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
74 /* In dynamically (linker-) created sections, we generally need to keep track
75 of the place a symbol or expression got allocated to. This is done via hash
76 tables that store entries of the following type. */
78 struct elfNN_ia64_dyn_sym_info
80 /* The addend for which this entry is relevant. */
81 bfd_vma addend;
83 /* Next addend in the list. */
84 struct elfNN_ia64_dyn_sym_info *next;
86 bfd_vma got_offset;
87 bfd_vma fptr_offset;
88 bfd_vma pltoff_offset;
89 bfd_vma plt_offset;
90 bfd_vma plt2_offset;
91 bfd_vma tprel_offset;
92 bfd_vma dtpmod_offset;
93 bfd_vma dtprel_offset;
95 /* The symbol table entry, if any, that this was derived from. */
96 struct elf_link_hash_entry *h;
98 /* Used to count non-got, non-plt relocations for delayed sizing
99 of relocation sections. */
100 struct elfNN_ia64_dyn_reloc_entry
102 struct elfNN_ia64_dyn_reloc_entry *next;
103 asection *srel;
104 int type;
105 int count;
107 /* Is this reloc against readonly section? */
108 bfd_boolean reltext;
109 } *reloc_entries;
111 /* TRUE when the section contents have been updated. */
112 unsigned got_done : 1;
113 unsigned fptr_done : 1;
114 unsigned pltoff_done : 1;
115 unsigned tprel_done : 1;
116 unsigned dtpmod_done : 1;
117 unsigned dtprel_done : 1;
119 /* TRUE for the different kinds of linker data we want created. */
120 unsigned want_got : 1;
121 unsigned want_gotx : 1;
122 unsigned want_fptr : 1;
123 unsigned want_ltoff_fptr : 1;
124 unsigned want_plt : 1;
125 unsigned want_plt2 : 1;
126 unsigned want_pltoff : 1;
127 unsigned want_tprel : 1;
128 unsigned want_dtpmod : 1;
129 unsigned want_dtprel : 1;
132 struct elfNN_ia64_local_hash_entry
134 int id;
135 unsigned int r_sym;
136 struct elfNN_ia64_dyn_sym_info *info;
138 /* TRUE if this hash entry's addends was translated for
139 SHF_MERGE optimization. */
140 unsigned sec_merge_done : 1;
143 struct elfNN_ia64_link_hash_entry
145 struct elf_link_hash_entry root;
146 struct elfNN_ia64_dyn_sym_info *info;
149 struct elfNN_ia64_link_hash_table
151 /* The main hash table. */
152 struct elf_link_hash_table root;
154 asection *got_sec; /* the linkage table section (or NULL) */
155 asection *rel_got_sec; /* dynamic relocation section for same */
156 asection *fptr_sec; /* function descriptor table (or NULL) */
157 asection *rel_fptr_sec; /* dynamic relocation section for same */
158 asection *plt_sec; /* the primary plt section (or NULL) */
159 asection *pltoff_sec; /* private descriptors for plt (or NULL) */
160 asection *rel_pltoff_sec; /* dynamic relocation section for same */
162 bfd_size_type minplt_entries; /* number of minplt entries */
163 unsigned reltext : 1; /* are there relocs against readonly sections? */
164 unsigned self_dtpmod_done : 1;/* has self DTPMOD entry been finished? */
165 bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry */
167 htab_t loc_hash_table;
168 void *loc_hash_memory;
171 struct elfNN_ia64_allocate_data
173 struct bfd_link_info *info;
174 bfd_size_type ofs;
175 bfd_boolean only_got;
178 #define elfNN_ia64_hash_table(p) \
179 ((struct elfNN_ia64_link_hash_table *) ((p)->hash))
181 static bfd_reloc_status_type elfNN_ia64_reloc
182 PARAMS ((bfd *abfd, arelent *reloc, asymbol *sym, PTR data,
183 asection *input_section, bfd *output_bfd, char **error_message));
184 static reloc_howto_type * lookup_howto
185 PARAMS ((unsigned int rtype));
186 static reloc_howto_type *elfNN_ia64_reloc_type_lookup
187 PARAMS ((bfd *abfd, bfd_reloc_code_real_type bfd_code));
188 static void elfNN_ia64_info_to_howto
189 PARAMS ((bfd *abfd, arelent *bfd_reloc, Elf_Internal_Rela *elf_reloc));
190 static bfd_boolean elfNN_ia64_relax_section
191 PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info,
192 bfd_boolean *again));
193 static void elfNN_ia64_relax_ldxmov
194 PARAMS((bfd_byte *contents, bfd_vma off));
195 static bfd_boolean is_unwind_section_name
196 PARAMS ((bfd *abfd, const char *));
197 static bfd_boolean elfNN_ia64_section_flags
198 PARAMS ((flagword *, const Elf_Internal_Shdr *));
199 static bfd_boolean elfNN_ia64_fake_sections
200 PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec));
201 static void elfNN_ia64_final_write_processing
202 PARAMS ((bfd *abfd, bfd_boolean linker));
203 static bfd_boolean elfNN_ia64_add_symbol_hook
204 PARAMS ((bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *sym,
205 const char **namep, flagword *flagsp, asection **secp,
206 bfd_vma *valp));
207 static int elfNN_ia64_additional_program_headers
208 PARAMS ((bfd *abfd));
209 static bfd_boolean elfNN_ia64_modify_segment_map
210 PARAMS ((bfd *, struct bfd_link_info *));
211 static bfd_boolean elfNN_ia64_is_local_label_name
212 PARAMS ((bfd *abfd, const char *name));
213 static bfd_boolean elfNN_ia64_dynamic_symbol_p
214 PARAMS ((struct elf_link_hash_entry *h, struct bfd_link_info *info, int));
215 static struct bfd_hash_entry *elfNN_ia64_new_elf_hash_entry
216 PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
217 const char *string));
218 static void elfNN_ia64_hash_copy_indirect
219 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *,
220 struct elf_link_hash_entry *));
221 static void elfNN_ia64_hash_hide_symbol
222 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
223 static hashval_t elfNN_ia64_local_htab_hash PARAMS ((const void *));
224 static int elfNN_ia64_local_htab_eq PARAMS ((const void *ptr1,
225 const void *ptr2));
226 static struct bfd_link_hash_table *elfNN_ia64_hash_table_create
227 PARAMS ((bfd *abfd));
228 static void elfNN_ia64_hash_table_free
229 PARAMS ((struct bfd_link_hash_table *hash));
230 static bfd_boolean elfNN_ia64_global_dyn_sym_thunk
231 PARAMS ((struct bfd_hash_entry *, PTR));
232 static int elfNN_ia64_local_dyn_sym_thunk
233 PARAMS ((void **, PTR));
234 static void elfNN_ia64_dyn_sym_traverse
235 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
236 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR),
237 PTR info));
238 static bfd_boolean elfNN_ia64_create_dynamic_sections
239 PARAMS ((bfd *abfd, struct bfd_link_info *info));
240 static struct elfNN_ia64_local_hash_entry * get_local_sym_hash
241 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
242 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create));
243 static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
244 PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
245 struct elf_link_hash_entry *h,
246 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create));
247 static asection *get_got
248 PARAMS ((bfd *abfd, struct bfd_link_info *info,
249 struct elfNN_ia64_link_hash_table *ia64_info));
250 static asection *get_fptr
251 PARAMS ((bfd *abfd, struct bfd_link_info *info,
252 struct elfNN_ia64_link_hash_table *ia64_info));
253 static asection *get_pltoff
254 PARAMS ((bfd *abfd, struct bfd_link_info *info,
255 struct elfNN_ia64_link_hash_table *ia64_info));
256 static asection *get_reloc_section
257 PARAMS ((bfd *abfd, struct elfNN_ia64_link_hash_table *ia64_info,
258 asection *sec, bfd_boolean create));
259 static bfd_boolean elfNN_ia64_check_relocs
260 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
261 const Elf_Internal_Rela *relocs));
262 static bfd_boolean elfNN_ia64_adjust_dynamic_symbol
263 PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
264 static long global_sym_index
265 PARAMS ((struct elf_link_hash_entry *h));
266 static bfd_boolean allocate_fptr
267 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
268 static bfd_boolean allocate_global_data_got
269 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
270 static bfd_boolean allocate_global_fptr_got
271 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
272 static bfd_boolean allocate_local_got
273 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
274 static bfd_boolean allocate_pltoff_entries
275 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
276 static bfd_boolean allocate_plt_entries
277 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
278 static bfd_boolean allocate_plt2_entries
279 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
280 static bfd_boolean allocate_dynrel_entries
281 PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
282 static bfd_boolean elfNN_ia64_size_dynamic_sections
283 PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
284 static bfd_reloc_status_type elfNN_ia64_install_value
285 PARAMS ((bfd_byte *hit_addr, bfd_vma val, unsigned int r_type));
286 static void elfNN_ia64_install_dyn_reloc
287 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
288 asection *srel, bfd_vma offset, unsigned int type,
289 long dynindx, bfd_vma addend));
290 static bfd_vma set_got_entry
291 PARAMS ((bfd *abfd, struct bfd_link_info *info,
292 struct elfNN_ia64_dyn_sym_info *dyn_i, long dynindx,
293 bfd_vma addend, bfd_vma value, unsigned int dyn_r_type));
294 static bfd_vma set_fptr_entry
295 PARAMS ((bfd *abfd, struct bfd_link_info *info,
296 struct elfNN_ia64_dyn_sym_info *dyn_i,
297 bfd_vma value));
298 static bfd_vma set_pltoff_entry
299 PARAMS ((bfd *abfd, struct bfd_link_info *info,
300 struct elfNN_ia64_dyn_sym_info *dyn_i,
301 bfd_vma value, bfd_boolean));
302 static bfd_vma elfNN_ia64_tprel_base
303 PARAMS ((struct bfd_link_info *info));
304 static bfd_vma elfNN_ia64_dtprel_base
305 PARAMS ((struct bfd_link_info *info));
306 static int elfNN_ia64_unwind_entry_compare
307 PARAMS ((const PTR, const PTR));
308 static bfd_boolean elfNN_ia64_choose_gp
309 PARAMS ((bfd *abfd, struct bfd_link_info *info));
310 static bfd_boolean elfNN_ia64_final_link
311 PARAMS ((bfd *abfd, struct bfd_link_info *info));
312 static bfd_boolean elfNN_ia64_relocate_section
313 PARAMS ((bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd,
314 asection *input_section, bfd_byte *contents,
315 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
316 asection **local_sections));
317 static bfd_boolean elfNN_ia64_finish_dynamic_symbol
318 PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
319 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
320 static bfd_boolean elfNN_ia64_finish_dynamic_sections
321 PARAMS ((bfd *abfd, struct bfd_link_info *info));
322 static bfd_boolean elfNN_ia64_set_private_flags
323 PARAMS ((bfd *abfd, flagword flags));
324 static bfd_boolean elfNN_ia64_merge_private_bfd_data
325 PARAMS ((bfd *ibfd, bfd *obfd));
326 static bfd_boolean elfNN_ia64_print_private_bfd_data
327 PARAMS ((bfd *abfd, PTR ptr));
328 static enum elf_reloc_type_class elfNN_ia64_reloc_type_class
329 PARAMS ((const Elf_Internal_Rela *));
330 static bfd_boolean elfNN_ia64_hpux_vec
331 PARAMS ((const bfd_target *vec));
332 static void elfNN_hpux_post_process_headers
333 PARAMS ((bfd *abfd, struct bfd_link_info *info));
334 bfd_boolean elfNN_hpux_backend_section_from_bfd_section
335 PARAMS ((bfd *abfd, asection *sec, int *retval));
337 /* ia64-specific relocation. */
339 /* Perform a relocation. Not much to do here as all the hard work is
340 done in elfNN_ia64_final_link_relocate. */
341 static bfd_reloc_status_type
342 elfNN_ia64_reloc (abfd, reloc, sym, data, input_section,
343 output_bfd, error_message)
344 bfd *abfd ATTRIBUTE_UNUSED;
345 arelent *reloc;
346 asymbol *sym ATTRIBUTE_UNUSED;
347 PTR data ATTRIBUTE_UNUSED;
348 asection *input_section;
349 bfd *output_bfd;
350 char **error_message;
352 if (output_bfd)
354 reloc->address += input_section->output_offset;
355 return bfd_reloc_ok;
358 if (input_section->flags & SEC_DEBUGGING)
359 return bfd_reloc_continue;
361 *error_message = "Unsupported call to elfNN_ia64_reloc";
362 return bfd_reloc_notsupported;
365 #define IA64_HOWTO(TYPE, NAME, SIZE, PCREL, IN) \
366 HOWTO (TYPE, 0, SIZE, 0, PCREL, 0, complain_overflow_signed, \
367 elfNN_ia64_reloc, NAME, FALSE, 0, -1, IN)
369 /* This table has to be sorted according to increasing number of the
370 TYPE field. */
371 static reloc_howto_type ia64_howto_table[] =
373 IA64_HOWTO (R_IA64_NONE, "NONE", 0, FALSE, TRUE),
375 IA64_HOWTO (R_IA64_IMM14, "IMM14", 0, FALSE, TRUE),
376 IA64_HOWTO (R_IA64_IMM22, "IMM22", 0, FALSE, TRUE),
377 IA64_HOWTO (R_IA64_IMM64, "IMM64", 0, FALSE, TRUE),
378 IA64_HOWTO (R_IA64_DIR32MSB, "DIR32MSB", 2, FALSE, TRUE),
379 IA64_HOWTO (R_IA64_DIR32LSB, "DIR32LSB", 2, FALSE, TRUE),
380 IA64_HOWTO (R_IA64_DIR64MSB, "DIR64MSB", 4, FALSE, TRUE),
381 IA64_HOWTO (R_IA64_DIR64LSB, "DIR64LSB", 4, FALSE, TRUE),
383 IA64_HOWTO (R_IA64_GPREL22, "GPREL22", 0, FALSE, TRUE),
384 IA64_HOWTO (R_IA64_GPREL64I, "GPREL64I", 0, FALSE, TRUE),
385 IA64_HOWTO (R_IA64_GPREL32MSB, "GPREL32MSB", 2, FALSE, TRUE),
386 IA64_HOWTO (R_IA64_GPREL32LSB, "GPREL32LSB", 2, FALSE, TRUE),
387 IA64_HOWTO (R_IA64_GPREL64MSB, "GPREL64MSB", 4, FALSE, TRUE),
388 IA64_HOWTO (R_IA64_GPREL64LSB, "GPREL64LSB", 4, FALSE, TRUE),
390 IA64_HOWTO (R_IA64_LTOFF22, "LTOFF22", 0, FALSE, TRUE),
391 IA64_HOWTO (R_IA64_LTOFF64I, "LTOFF64I", 0, FALSE, TRUE),
393 IA64_HOWTO (R_IA64_PLTOFF22, "PLTOFF22", 0, FALSE, TRUE),
394 IA64_HOWTO (R_IA64_PLTOFF64I, "PLTOFF64I", 0, FALSE, TRUE),
395 IA64_HOWTO (R_IA64_PLTOFF64MSB, "PLTOFF64MSB", 4, FALSE, TRUE),
396 IA64_HOWTO (R_IA64_PLTOFF64LSB, "PLTOFF64LSB", 4, FALSE, TRUE),
398 IA64_HOWTO (R_IA64_FPTR64I, "FPTR64I", 0, FALSE, TRUE),
399 IA64_HOWTO (R_IA64_FPTR32MSB, "FPTR32MSB", 2, FALSE, TRUE),
400 IA64_HOWTO (R_IA64_FPTR32LSB, "FPTR32LSB", 2, FALSE, TRUE),
401 IA64_HOWTO (R_IA64_FPTR64MSB, "FPTR64MSB", 4, FALSE, TRUE),
402 IA64_HOWTO (R_IA64_FPTR64LSB, "FPTR64LSB", 4, FALSE, TRUE),
404 IA64_HOWTO (R_IA64_PCREL60B, "PCREL60B", 0, TRUE, TRUE),
405 IA64_HOWTO (R_IA64_PCREL21B, "PCREL21B", 0, TRUE, TRUE),
406 IA64_HOWTO (R_IA64_PCREL21M, "PCREL21M", 0, TRUE, TRUE),
407 IA64_HOWTO (R_IA64_PCREL21F, "PCREL21F", 0, TRUE, TRUE),
408 IA64_HOWTO (R_IA64_PCREL32MSB, "PCREL32MSB", 2, TRUE, TRUE),
409 IA64_HOWTO (R_IA64_PCREL32LSB, "PCREL32LSB", 2, TRUE, TRUE),
410 IA64_HOWTO (R_IA64_PCREL64MSB, "PCREL64MSB", 4, TRUE, TRUE),
411 IA64_HOWTO (R_IA64_PCREL64LSB, "PCREL64LSB", 4, TRUE, TRUE),
413 IA64_HOWTO (R_IA64_LTOFF_FPTR22, "LTOFF_FPTR22", 0, FALSE, TRUE),
414 IA64_HOWTO (R_IA64_LTOFF_FPTR64I, "LTOFF_FPTR64I", 0, FALSE, TRUE),
415 IA64_HOWTO (R_IA64_LTOFF_FPTR32MSB, "LTOFF_FPTR32MSB", 2, FALSE, TRUE),
416 IA64_HOWTO (R_IA64_LTOFF_FPTR32LSB, "LTOFF_FPTR32LSB", 2, FALSE, TRUE),
417 IA64_HOWTO (R_IA64_LTOFF_FPTR64MSB, "LTOFF_FPTR64MSB", 4, FALSE, TRUE),
418 IA64_HOWTO (R_IA64_LTOFF_FPTR64LSB, "LTOFF_FPTR64LSB", 4, FALSE, TRUE),
420 IA64_HOWTO (R_IA64_SEGREL32MSB, "SEGREL32MSB", 2, FALSE, TRUE),
421 IA64_HOWTO (R_IA64_SEGREL32LSB, "SEGREL32LSB", 2, FALSE, TRUE),
422 IA64_HOWTO (R_IA64_SEGREL64MSB, "SEGREL64MSB", 4, FALSE, TRUE),
423 IA64_HOWTO (R_IA64_SEGREL64LSB, "SEGREL64LSB", 4, FALSE, TRUE),
425 IA64_HOWTO (R_IA64_SECREL32MSB, "SECREL32MSB", 2, FALSE, TRUE),
426 IA64_HOWTO (R_IA64_SECREL32LSB, "SECREL32LSB", 2, FALSE, TRUE),
427 IA64_HOWTO (R_IA64_SECREL64MSB, "SECREL64MSB", 4, FALSE, TRUE),
428 IA64_HOWTO (R_IA64_SECREL64LSB, "SECREL64LSB", 4, FALSE, TRUE),
430 IA64_HOWTO (R_IA64_REL32MSB, "REL32MSB", 2, FALSE, TRUE),
431 IA64_HOWTO (R_IA64_REL32LSB, "REL32LSB", 2, FALSE, TRUE),
432 IA64_HOWTO (R_IA64_REL64MSB, "REL64MSB", 4, FALSE, TRUE),
433 IA64_HOWTO (R_IA64_REL64LSB, "REL64LSB", 4, FALSE, TRUE),
435 IA64_HOWTO (R_IA64_LTV32MSB, "LTV32MSB", 2, FALSE, TRUE),
436 IA64_HOWTO (R_IA64_LTV32LSB, "LTV32LSB", 2, FALSE, TRUE),
437 IA64_HOWTO (R_IA64_LTV64MSB, "LTV64MSB", 4, FALSE, TRUE),
438 IA64_HOWTO (R_IA64_LTV64LSB, "LTV64LSB", 4, FALSE, TRUE),
440 IA64_HOWTO (R_IA64_PCREL21BI, "PCREL21BI", 0, TRUE, TRUE),
441 IA64_HOWTO (R_IA64_PCREL22, "PCREL22", 0, TRUE, TRUE),
442 IA64_HOWTO (R_IA64_PCREL64I, "PCREL64I", 0, TRUE, TRUE),
444 IA64_HOWTO (R_IA64_IPLTMSB, "IPLTMSB", 4, FALSE, TRUE),
445 IA64_HOWTO (R_IA64_IPLTLSB, "IPLTLSB", 4, FALSE, TRUE),
446 IA64_HOWTO (R_IA64_COPY, "COPY", 4, FALSE, TRUE),
447 IA64_HOWTO (R_IA64_LTOFF22X, "LTOFF22X", 0, FALSE, TRUE),
448 IA64_HOWTO (R_IA64_LDXMOV, "LDXMOV", 0, FALSE, TRUE),
450 IA64_HOWTO (R_IA64_TPREL14, "TPREL14", 0, FALSE, FALSE),
451 IA64_HOWTO (R_IA64_TPREL22, "TPREL22", 0, FALSE, FALSE),
452 IA64_HOWTO (R_IA64_TPREL64I, "TPREL64I", 0, FALSE, FALSE),
453 IA64_HOWTO (R_IA64_TPREL64MSB, "TPREL64MSB", 4, FALSE, FALSE),
454 IA64_HOWTO (R_IA64_TPREL64LSB, "TPREL64LSB", 4, FALSE, FALSE),
455 IA64_HOWTO (R_IA64_LTOFF_TPREL22, "LTOFF_TPREL22", 0, FALSE, FALSE),
457 IA64_HOWTO (R_IA64_DTPMOD64MSB, "DTPMOD64MSB", 4, FALSE, FALSE),
458 IA64_HOWTO (R_IA64_DTPMOD64LSB, "DTPMOD64LSB", 4, FALSE, FALSE),
459 IA64_HOWTO (R_IA64_LTOFF_DTPMOD22, "LTOFF_DTPMOD22", 0, FALSE, FALSE),
461 IA64_HOWTO (R_IA64_DTPREL14, "DTPREL14", 0, FALSE, FALSE),
462 IA64_HOWTO (R_IA64_DTPREL22, "DTPREL22", 0, FALSE, FALSE),
463 IA64_HOWTO (R_IA64_DTPREL64I, "DTPREL64I", 0, FALSE, FALSE),
464 IA64_HOWTO (R_IA64_DTPREL32MSB, "DTPREL32MSB", 2, FALSE, FALSE),
465 IA64_HOWTO (R_IA64_DTPREL32LSB, "DTPREL32LSB", 2, FALSE, FALSE),
466 IA64_HOWTO (R_IA64_DTPREL64MSB, "DTPREL64MSB", 4, FALSE, FALSE),
467 IA64_HOWTO (R_IA64_DTPREL64LSB, "DTPREL64LSB", 4, FALSE, FALSE),
468 IA64_HOWTO (R_IA64_LTOFF_DTPREL22, "LTOFF_DTPREL22", 0, FALSE, FALSE),
471 static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1];
473 /* Given a BFD reloc type, return the matching HOWTO structure. */
475 static reloc_howto_type *
476 lookup_howto (rtype)
477 unsigned int rtype;
479 static int inited = 0;
480 int i;
482 if (!inited)
484 inited = 1;
486 memset (elf_code_to_howto_index, 0xff, sizeof (elf_code_to_howto_index));
487 for (i = 0; i < NELEMS (ia64_howto_table); ++i)
488 elf_code_to_howto_index[ia64_howto_table[i].type] = i;
491 if (rtype > R_IA64_MAX_RELOC_CODE)
492 return 0;
493 i = elf_code_to_howto_index[rtype];
494 if (i >= NELEMS (ia64_howto_table))
495 return 0;
496 return ia64_howto_table + i;
499 static reloc_howto_type*
500 elfNN_ia64_reloc_type_lookup (abfd, bfd_code)
501 bfd *abfd ATTRIBUTE_UNUSED;
502 bfd_reloc_code_real_type bfd_code;
504 unsigned int rtype;
506 switch (bfd_code)
508 case BFD_RELOC_NONE: rtype = R_IA64_NONE; break;
510 case BFD_RELOC_IA64_IMM14: rtype = R_IA64_IMM14; break;
511 case BFD_RELOC_IA64_IMM22: rtype = R_IA64_IMM22; break;
512 case BFD_RELOC_IA64_IMM64: rtype = R_IA64_IMM64; break;
514 case BFD_RELOC_IA64_DIR32MSB: rtype = R_IA64_DIR32MSB; break;
515 case BFD_RELOC_IA64_DIR32LSB: rtype = R_IA64_DIR32LSB; break;
516 case BFD_RELOC_IA64_DIR64MSB: rtype = R_IA64_DIR64MSB; break;
517 case BFD_RELOC_IA64_DIR64LSB: rtype = R_IA64_DIR64LSB; break;
519 case BFD_RELOC_IA64_GPREL22: rtype = R_IA64_GPREL22; break;
520 case BFD_RELOC_IA64_GPREL64I: rtype = R_IA64_GPREL64I; break;
521 case BFD_RELOC_IA64_GPREL32MSB: rtype = R_IA64_GPREL32MSB; break;
522 case BFD_RELOC_IA64_GPREL32LSB: rtype = R_IA64_GPREL32LSB; break;
523 case BFD_RELOC_IA64_GPREL64MSB: rtype = R_IA64_GPREL64MSB; break;
524 case BFD_RELOC_IA64_GPREL64LSB: rtype = R_IA64_GPREL64LSB; break;
526 case BFD_RELOC_IA64_LTOFF22: rtype = R_IA64_LTOFF22; break;
527 case BFD_RELOC_IA64_LTOFF64I: rtype = R_IA64_LTOFF64I; break;
529 case BFD_RELOC_IA64_PLTOFF22: rtype = R_IA64_PLTOFF22; break;
530 case BFD_RELOC_IA64_PLTOFF64I: rtype = R_IA64_PLTOFF64I; break;
531 case BFD_RELOC_IA64_PLTOFF64MSB: rtype = R_IA64_PLTOFF64MSB; break;
532 case BFD_RELOC_IA64_PLTOFF64LSB: rtype = R_IA64_PLTOFF64LSB; break;
533 case BFD_RELOC_IA64_FPTR64I: rtype = R_IA64_FPTR64I; break;
534 case BFD_RELOC_IA64_FPTR32MSB: rtype = R_IA64_FPTR32MSB; break;
535 case BFD_RELOC_IA64_FPTR32LSB: rtype = R_IA64_FPTR32LSB; break;
536 case BFD_RELOC_IA64_FPTR64MSB: rtype = R_IA64_FPTR64MSB; break;
537 case BFD_RELOC_IA64_FPTR64LSB: rtype = R_IA64_FPTR64LSB; break;
539 case BFD_RELOC_IA64_PCREL21B: rtype = R_IA64_PCREL21B; break;
540 case BFD_RELOC_IA64_PCREL21BI: rtype = R_IA64_PCREL21BI; break;
541 case BFD_RELOC_IA64_PCREL21M: rtype = R_IA64_PCREL21M; break;
542 case BFD_RELOC_IA64_PCREL21F: rtype = R_IA64_PCREL21F; break;
543 case BFD_RELOC_IA64_PCREL22: rtype = R_IA64_PCREL22; break;
544 case BFD_RELOC_IA64_PCREL60B: rtype = R_IA64_PCREL60B; break;
545 case BFD_RELOC_IA64_PCREL64I: rtype = R_IA64_PCREL64I; break;
546 case BFD_RELOC_IA64_PCREL32MSB: rtype = R_IA64_PCREL32MSB; break;
547 case BFD_RELOC_IA64_PCREL32LSB: rtype = R_IA64_PCREL32LSB; break;
548 case BFD_RELOC_IA64_PCREL64MSB: rtype = R_IA64_PCREL64MSB; break;
549 case BFD_RELOC_IA64_PCREL64LSB: rtype = R_IA64_PCREL64LSB; break;
551 case BFD_RELOC_IA64_LTOFF_FPTR22: rtype = R_IA64_LTOFF_FPTR22; break;
552 case BFD_RELOC_IA64_LTOFF_FPTR64I: rtype = R_IA64_LTOFF_FPTR64I; break;
553 case BFD_RELOC_IA64_LTOFF_FPTR32MSB: rtype = R_IA64_LTOFF_FPTR32MSB; break;
554 case BFD_RELOC_IA64_LTOFF_FPTR32LSB: rtype = R_IA64_LTOFF_FPTR32LSB; break;
555 case BFD_RELOC_IA64_LTOFF_FPTR64MSB: rtype = R_IA64_LTOFF_FPTR64MSB; break;
556 case BFD_RELOC_IA64_LTOFF_FPTR64LSB: rtype = R_IA64_LTOFF_FPTR64LSB; break;
558 case BFD_RELOC_IA64_SEGREL32MSB: rtype = R_IA64_SEGREL32MSB; break;
559 case BFD_RELOC_IA64_SEGREL32LSB: rtype = R_IA64_SEGREL32LSB; break;
560 case BFD_RELOC_IA64_SEGREL64MSB: rtype = R_IA64_SEGREL64MSB; break;
561 case BFD_RELOC_IA64_SEGREL64LSB: rtype = R_IA64_SEGREL64LSB; break;
563 case BFD_RELOC_IA64_SECREL32MSB: rtype = R_IA64_SECREL32MSB; break;
564 case BFD_RELOC_IA64_SECREL32LSB: rtype = R_IA64_SECREL32LSB; break;
565 case BFD_RELOC_IA64_SECREL64MSB: rtype = R_IA64_SECREL64MSB; break;
566 case BFD_RELOC_IA64_SECREL64LSB: rtype = R_IA64_SECREL64LSB; break;
568 case BFD_RELOC_IA64_REL32MSB: rtype = R_IA64_REL32MSB; break;
569 case BFD_RELOC_IA64_REL32LSB: rtype = R_IA64_REL32LSB; break;
570 case BFD_RELOC_IA64_REL64MSB: rtype = R_IA64_REL64MSB; break;
571 case BFD_RELOC_IA64_REL64LSB: rtype = R_IA64_REL64LSB; break;
573 case BFD_RELOC_IA64_LTV32MSB: rtype = R_IA64_LTV32MSB; break;
574 case BFD_RELOC_IA64_LTV32LSB: rtype = R_IA64_LTV32LSB; break;
575 case BFD_RELOC_IA64_LTV64MSB: rtype = R_IA64_LTV64MSB; break;
576 case BFD_RELOC_IA64_LTV64LSB: rtype = R_IA64_LTV64LSB; break;
578 case BFD_RELOC_IA64_IPLTMSB: rtype = R_IA64_IPLTMSB; break;
579 case BFD_RELOC_IA64_IPLTLSB: rtype = R_IA64_IPLTLSB; break;
580 case BFD_RELOC_IA64_COPY: rtype = R_IA64_COPY; break;
581 case BFD_RELOC_IA64_LTOFF22X: rtype = R_IA64_LTOFF22X; break;
582 case BFD_RELOC_IA64_LDXMOV: rtype = R_IA64_LDXMOV; break;
584 case BFD_RELOC_IA64_TPREL14: rtype = R_IA64_TPREL14; break;
585 case BFD_RELOC_IA64_TPREL22: rtype = R_IA64_TPREL22; break;
586 case BFD_RELOC_IA64_TPREL64I: rtype = R_IA64_TPREL64I; break;
587 case BFD_RELOC_IA64_TPREL64MSB: rtype = R_IA64_TPREL64MSB; break;
588 case BFD_RELOC_IA64_TPREL64LSB: rtype = R_IA64_TPREL64LSB; break;
589 case BFD_RELOC_IA64_LTOFF_TPREL22: rtype = R_IA64_LTOFF_TPREL22; break;
591 case BFD_RELOC_IA64_DTPMOD64MSB: rtype = R_IA64_DTPMOD64MSB; break;
592 case BFD_RELOC_IA64_DTPMOD64LSB: rtype = R_IA64_DTPMOD64LSB; break;
593 case BFD_RELOC_IA64_LTOFF_DTPMOD22: rtype = R_IA64_LTOFF_DTPMOD22; break;
595 case BFD_RELOC_IA64_DTPREL14: rtype = R_IA64_DTPREL14; break;
596 case BFD_RELOC_IA64_DTPREL22: rtype = R_IA64_DTPREL22; break;
597 case BFD_RELOC_IA64_DTPREL64I: rtype = R_IA64_DTPREL64I; break;
598 case BFD_RELOC_IA64_DTPREL32MSB: rtype = R_IA64_DTPREL32MSB; break;
599 case BFD_RELOC_IA64_DTPREL32LSB: rtype = R_IA64_DTPREL32LSB; break;
600 case BFD_RELOC_IA64_DTPREL64MSB: rtype = R_IA64_DTPREL64MSB; break;
601 case BFD_RELOC_IA64_DTPREL64LSB: rtype = R_IA64_DTPREL64LSB; break;
602 case BFD_RELOC_IA64_LTOFF_DTPREL22: rtype = R_IA64_LTOFF_DTPREL22; break;
604 default: return 0;
606 return lookup_howto (rtype);
609 /* Given a ELF reloc, return the matching HOWTO structure. */
611 static void
612 elfNN_ia64_info_to_howto (abfd, bfd_reloc, elf_reloc)
613 bfd *abfd ATTRIBUTE_UNUSED;
614 arelent *bfd_reloc;
615 Elf_Internal_Rela *elf_reloc;
617 bfd_reloc->howto
618 = lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info));
621 #define PLT_HEADER_SIZE (3 * 16)
622 #define PLT_MIN_ENTRY_SIZE (1 * 16)
623 #define PLT_FULL_ENTRY_SIZE (2 * 16)
624 #define PLT_RESERVED_WORDS 3
626 static const bfd_byte plt_header[PLT_HEADER_SIZE] =
628 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
629 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
630 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
631 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
632 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
633 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
634 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
635 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
636 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
639 static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
641 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
642 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
643 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
646 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
648 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
649 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
650 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
651 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
652 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
653 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
656 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
658 static const bfd_byte oor_brl[16] =
660 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
661 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
662 0x00, 0x00, 0x00, 0xc0
665 static const bfd_byte oor_ip[48] =
667 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
668 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
669 0x01, 0x00, 0x00, 0x60,
670 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
671 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
672 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
673 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
674 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
675 0x60, 0x00, 0x80, 0x00 /* br b6;; */
678 static size_t oor_branch_size = sizeof (oor_brl);
680 void
681 bfd_elfNN_ia64_after_parse (int itanium)
683 oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
686 #define BTYPE_SHIFT 6
687 #define Y_SHIFT 26
688 #define X6_SHIFT 27
689 #define X4_SHIFT 27
690 #define X3_SHIFT 33
691 #define X2_SHIFT 31
692 #define X_SHIFT 33
693 #define OPCODE_SHIFT 37
695 #define OPCODE_BITS (0xfLL << OPCODE_SHIFT)
696 #define X6_BITS (0x3fLL << X6_SHIFT)
697 #define X4_BITS (0xfLL << X4_SHIFT)
698 #define X3_BITS (0x7LL << X3_SHIFT)
699 #define X2_BITS (0x3LL << X2_SHIFT)
700 #define X_BITS (0x1LL << X_SHIFT)
701 #define Y_BITS (0x1LL << Y_SHIFT)
702 #define BTYPE_BITS (0x7LL << BTYPE_SHIFT)
703 #define PREDICATE_BITS (0x3fLL)
705 #define IS_NOP_B(i) \
706 (((i) & (OPCODE_BITS | X6_BITS)) == (2LL << OPCODE_SHIFT))
707 #define IS_NOP_F(i) \
708 (((i) & (OPCODE_BITS | X_BITS | X6_BITS | Y_BITS)) \
709 == (0x1LL << X6_SHIFT))
710 #define IS_NOP_I(i) \
711 (((i) & (OPCODE_BITS | X3_BITS | X6_BITS | Y_BITS)) \
712 == (0x1LL << X6_SHIFT))
713 #define IS_NOP_M(i) \
714 (((i) & (OPCODE_BITS | X3_BITS | X2_BITS | X4_BITS | Y_BITS)) \
715 == (0x1LL << X4_SHIFT))
716 #define IS_BR_COND(i) \
717 (((i) & (OPCODE_BITS | BTYPE_BITS)) == (0x4LL << OPCODE_SHIFT))
718 #define IS_BR_CALL(i) \
719 (((i) & OPCODE_BITS) == (0x5LL << OPCODE_SHIFT))
721 static bfd_boolean
722 elfNN_ia64_relax_br (bfd_byte *contents, bfd_vma off)
724 unsigned int template, mlx;
725 bfd_vma t0, t1, s0, s1, s2, br_code;
726 long br_slot;
727 bfd_byte *hit_addr;
729 hit_addr = (bfd_byte *) (contents + off);
730 br_slot = (long) hit_addr & 0x3;
731 hit_addr -= br_slot;
732 t0 = bfd_getl64 (hit_addr + 0);
733 t1 = bfd_getl64 (hit_addr + 8);
735 /* Check if we can turn br into brl. A label is always at the start
736 of the bundle. Even if there are predicates on NOPs, we still
737 perform this optimization. */
738 template = t0 & 0x1e;
739 s0 = (t0 >> 5) & 0x1ffffffffffLL;
740 s1 = ((t0 >> 46) | (t1 << 18)) & 0x1ffffffffffLL;
741 s2 = (t1 >> 23) & 0x1ffffffffffLL;
742 switch (br_slot)
744 case 0:
745 /* Check if slot 1 and slot 2 are NOPs. Possible template is
746 BBB. We only need to check nop.b. */
747 if (!(IS_NOP_B (s1) && IS_NOP_B (s2)))
748 return FALSE;
749 br_code = s0;
750 break;
751 case 1:
752 /* Check if slot 2 is NOP. Possible templates are MBB and BBB.
753 For BBB, slot 0 also has to be nop.b. */
754 if (!((template == 0x12 /* MBB */
755 && IS_NOP_B (s2))
756 || (template == 0x16 /* BBB */
757 && IS_NOP_B (s0)
758 && IS_NOP_B (s2))))
759 return FALSE;
760 br_code = s1;
761 break;
762 case 2:
763 /* Check if slot 1 is NOP. Possible templates are MIB, MBB, BBB,
764 MMB and MFB. For BBB, slot 0 also has to be nop.b. */
765 if (!((template == 0x10 /* MIB */
766 && IS_NOP_I (s1))
767 || (template == 0x12 /* MBB */
768 && IS_NOP_B (s1))
769 || (template == 0x16 /* BBB */
770 && IS_NOP_B (s0)
771 && IS_NOP_B (s1))
772 || (template == 0x18 /* MMB */
773 && IS_NOP_M (s1))
774 || (template == 0x1c /* MFB */
775 && IS_NOP_F (s1))))
776 return FALSE;
777 br_code = s2;
778 break;
779 default:
780 /* It should never happen. */
781 abort ();
784 /* We can turn br.cond/br.call into brl.cond/brl.call. */
785 if (!(IS_BR_COND (br_code) || IS_BR_CALL (br_code)))
786 return FALSE;
788 /* Turn br into brl by setting bit 40. */
789 br_code |= 0x1LL << 40;
791 /* Turn the old bundle into a MLX bundle with the same stop-bit
792 variety. */
793 if (t0 & 0x1)
794 mlx = 0x5;
795 else
796 mlx = 0x4;
798 if (template == 0x16)
800 /* For BBB, we need to put nop.m in slot 0. We keep the original
801 predicate only if slot 0 isn't br. */
802 if (br_slot == 0)
803 t0 = 0LL;
804 else
805 t0 &= PREDICATE_BITS << 5;
806 t0 |= 0x1LL << (X4_SHIFT + 5);
808 else
810 /* Keep the original instruction in slot 0. */
811 t0 &= 0x1ffffffffffLL << 5;
814 t0 |= mlx;
816 /* Put brl in slot 1. */
817 t1 = br_code << 23;
819 bfd_putl64 (t0, hit_addr);
820 bfd_putl64 (t1, hit_addr + 8);
821 return TRUE;
824 static void
825 elfNN_ia64_relax_brl (bfd_byte *contents, bfd_vma off)
827 int template;
828 bfd_byte *hit_addr;
829 bfd_vma t0, t1, i0, i1, i2;
831 hit_addr = (bfd_byte *) (contents + off);
832 hit_addr -= (long) hit_addr & 0x3;
833 t0 = bfd_getl64 (hit_addr);
834 t1 = bfd_getl64 (hit_addr + 8);
836 /* Keep the instruction in slot 0. */
837 i0 = (t0 >> 5) & 0x1ffffffffffLL;
838 /* Use nop.b for slot 1. */
839 i1 = 0x4000000000LL;
840 /* For slot 2, turn brl into br by masking out bit 40. */
841 i2 = (t1 >> 23) & 0x0ffffffffffLL;
843 /* Turn a MLX bundle into a MBB bundle with the same stop-bit
844 variety. */
845 if (t0 & 0x1)
846 template = 0x13;
847 else
848 template = 0x12;
849 t0 = (i1 << 46) | (i0 << 5) | template;
850 t1 = (i2 << 23) | (i1 >> 18);
852 bfd_putl64 (t0, hit_addr);
853 bfd_putl64 (t1, hit_addr + 8);
856 /* These functions do relaxation for IA-64 ELF. */
858 static bfd_boolean
859 elfNN_ia64_relax_section (abfd, sec, link_info, again)
860 bfd *abfd;
861 asection *sec;
862 struct bfd_link_info *link_info;
863 bfd_boolean *again;
865 struct one_fixup
867 struct one_fixup *next;
868 asection *tsec;
869 bfd_vma toff;
870 bfd_vma trampoff;
873 Elf_Internal_Shdr *symtab_hdr;
874 Elf_Internal_Rela *internal_relocs;
875 Elf_Internal_Rela *irel, *irelend;
876 bfd_byte *contents;
877 Elf_Internal_Sym *isymbuf = NULL;
878 struct elfNN_ia64_link_hash_table *ia64_info;
879 struct one_fixup *fixups = NULL;
880 bfd_boolean changed_contents = FALSE;
881 bfd_boolean changed_relocs = FALSE;
882 bfd_boolean changed_got = FALSE;
883 bfd_vma gp = 0;
885 /* Assume we're not going to change any sizes, and we'll only need
886 one pass. */
887 *again = FALSE;
889 /* Don't even try to relax for non-ELF outputs. */
890 if (!is_elf_hash_table (link_info->hash))
891 return FALSE;
893 /* Nothing to do if there are no relocations or there is no need for
894 the relax finalize pass. */
895 if ((sec->flags & SEC_RELOC) == 0
896 || sec->reloc_count == 0
897 || (!link_info->need_relax_finalize
898 && sec->need_finalize_relax == 0))
899 return TRUE;
901 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
903 /* Load the relocations for this section. */
904 internal_relocs = (_bfd_elf_link_read_relocs
905 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
906 link_info->keep_memory));
907 if (internal_relocs == NULL)
908 return FALSE;
910 ia64_info = elfNN_ia64_hash_table (link_info);
911 irelend = internal_relocs + sec->reloc_count;
913 /* Get the section contents. */
914 if (elf_section_data (sec)->this_hdr.contents != NULL)
915 contents = elf_section_data (sec)->this_hdr.contents;
916 else
918 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
919 goto error_return;
922 for (irel = internal_relocs; irel < irelend; irel++)
924 unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
925 bfd_vma symaddr, reladdr, trampoff, toff, roff;
926 asection *tsec;
927 struct one_fixup *f;
928 bfd_size_type amt;
929 bfd_boolean is_branch;
930 struct elfNN_ia64_dyn_sym_info *dyn_i;
931 char symtype;
933 switch (r_type)
935 case R_IA64_PCREL21B:
936 case R_IA64_PCREL21BI:
937 case R_IA64_PCREL21M:
938 case R_IA64_PCREL21F:
939 /* In the finalize pass, all br relaxations are done. We can
940 skip it. */
941 if (!link_info->need_relax_finalize)
942 continue;
943 is_branch = TRUE;
944 break;
946 case R_IA64_PCREL60B:
947 /* We can't optimize brl to br before the finalize pass since
948 br relaxations will increase the code size. Defer it to
949 the finalize pass. */
950 if (link_info->need_relax_finalize)
952 sec->need_finalize_relax = 1;
953 continue;
955 is_branch = TRUE;
956 break;
958 case R_IA64_LTOFF22X:
959 case R_IA64_LDXMOV:
960 /* We can't relax ldx/mov before the finalize pass since
961 br relaxations will increase the code size. Defer it to
962 the finalize pass. */
963 if (link_info->need_relax_finalize)
965 sec->need_finalize_relax = 1;
966 continue;
968 is_branch = FALSE;
969 break;
971 default:
972 continue;
975 /* Get the value of the symbol referred to by the reloc. */
976 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
978 /* A local symbol. */
979 Elf_Internal_Sym *isym;
981 /* Read this BFD's local symbols. */
982 if (isymbuf == NULL)
984 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
985 if (isymbuf == NULL)
986 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
987 symtab_hdr->sh_info, 0,
988 NULL, NULL, NULL);
989 if (isymbuf == 0)
990 goto error_return;
993 isym = isymbuf + ELFNN_R_SYM (irel->r_info);
994 if (isym->st_shndx == SHN_UNDEF)
995 continue; /* We can't do anything with undefined symbols. */
996 else if (isym->st_shndx == SHN_ABS)
997 tsec = bfd_abs_section_ptr;
998 else if (isym->st_shndx == SHN_COMMON)
999 tsec = bfd_com_section_ptr;
1000 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
1001 tsec = bfd_com_section_ptr;
1002 else
1003 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1005 toff = isym->st_value;
1006 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
1007 symtype = ELF_ST_TYPE (isym->st_info);
1009 else
1011 unsigned long indx;
1012 struct elf_link_hash_entry *h;
1014 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
1015 h = elf_sym_hashes (abfd)[indx];
1016 BFD_ASSERT (h != NULL);
1018 while (h->root.type == bfd_link_hash_indirect
1019 || h->root.type == bfd_link_hash_warning)
1020 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1022 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
1024 /* For branches to dynamic symbols, we're interested instead
1025 in a branch to the PLT entry. */
1026 if (is_branch && dyn_i && dyn_i->want_plt2)
1028 /* Internal branches shouldn't be sent to the PLT.
1029 Leave this for now and we'll give an error later. */
1030 if (r_type != R_IA64_PCREL21B)
1031 continue;
1033 tsec = ia64_info->plt_sec;
1034 toff = dyn_i->plt2_offset;
1035 BFD_ASSERT (irel->r_addend == 0);
1038 /* Can't do anything else with dynamic symbols. */
1039 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
1040 continue;
1042 else
1044 /* We can't do anything with undefined symbols. */
1045 if (h->root.type == bfd_link_hash_undefined
1046 || h->root.type == bfd_link_hash_undefweak)
1047 continue;
1049 tsec = h->root.u.def.section;
1050 toff = h->root.u.def.value;
1053 symtype = h->type;
1056 if (tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
1058 /* At this stage in linking, no SEC_MERGE symbol has been
1059 adjusted, so all references to such symbols need to be
1060 passed through _bfd_merged_section_offset. (Later, in
1061 relocate_section, all SEC_MERGE symbols *except* for
1062 section symbols have been adjusted.)
1064 gas may reduce relocations against symbols in SEC_MERGE
1065 sections to a relocation against the section symbol when
1066 the original addend was zero. When the reloc is against
1067 a section symbol we should include the addend in the
1068 offset passed to _bfd_merged_section_offset, since the
1069 location of interest is the original symbol. On the
1070 other hand, an access to "sym+addend" where "sym" is not
1071 a section symbol should not include the addend; Such an
1072 access is presumed to be an offset from "sym"; The
1073 location of interest is just "sym". */
1074 if (symtype == STT_SECTION)
1075 toff += irel->r_addend;
1077 toff = _bfd_merged_section_offset (abfd, &tsec,
1078 elf_section_data (tsec)->sec_info,
1079 toff);
1081 if (symtype != STT_SECTION)
1082 toff += irel->r_addend;
1084 else
1085 toff += irel->r_addend;
1087 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
1089 roff = irel->r_offset;
1091 if (is_branch)
1093 bfd_signed_vma offset;
1095 reladdr = (sec->output_section->vma
1096 + sec->output_offset
1097 + roff) & (bfd_vma) -4;
1099 /* If the branch is in range, no need to do anything. */
1100 if ((bfd_signed_vma) (symaddr - reladdr) >= -0x1000000
1101 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
1103 /* If the 60-bit branch is in 21-bit range, optimize it. */
1104 if (r_type == R_IA64_PCREL60B)
1106 elfNN_ia64_relax_brl (contents, roff);
1108 irel->r_info
1109 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1110 R_IA64_PCREL21B);
1112 /* If the original relocation offset points to slot
1113 1, change it to slot 2. */
1114 if ((irel->r_offset & 3) == 1)
1115 irel->r_offset += 1;
1118 continue;
1120 else if (r_type == R_IA64_PCREL60B)
1121 continue;
1122 else if (elfNN_ia64_relax_br (contents, roff))
1124 irel->r_info
1125 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1126 R_IA64_PCREL60B);
1128 /* Make the relocation offset point to slot 1. */
1129 irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1;
1130 continue;
1133 /* We can't put a trampoline in a .init/.fini section. Issue
1134 an error. */
1135 if (strcmp (sec->output_section->name, ".init") == 0
1136 || strcmp (sec->output_section->name, ".fini") == 0)
1138 (*_bfd_error_handler)
1139 (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."),
1140 sec->owner, sec, (unsigned long) roff);
1141 bfd_set_error (bfd_error_bad_value);
1142 goto error_return;
1145 /* If the branch and target are in the same section, you've
1146 got one honking big section and we can't help you unless
1147 you are branching backwards. You'll get an error message
1148 later. */
1149 if (tsec == sec && toff > roff)
1150 continue;
1152 /* Look for an existing fixup to this address. */
1153 for (f = fixups; f ; f = f->next)
1154 if (f->tsec == tsec && f->toff == toff)
1155 break;
1157 if (f == NULL)
1159 /* Two alternatives: If it's a branch to a PLT entry, we can
1160 make a copy of the FULL_PLT entry. Otherwise, we'll have
1161 to use a `brl' insn to get where we're going. */
1163 size_t size;
1165 if (tsec == ia64_info->plt_sec)
1166 size = sizeof (plt_full_entry);
1167 else
1168 size = oor_branch_size;
1170 /* Resize the current section to make room for the new branch. */
1171 trampoff = (sec->size + 15) & (bfd_vma) -16;
1173 /* If trampoline is out of range, there is nothing we
1174 can do. */
1175 offset = trampoff - (roff & (bfd_vma) -4);
1176 if (offset < -0x1000000 || offset > 0x0FFFFF0)
1177 continue;
1179 amt = trampoff + size;
1180 contents = (bfd_byte *) bfd_realloc (contents, amt);
1181 if (contents == NULL)
1182 goto error_return;
1183 sec->size = amt;
1185 if (tsec == ia64_info->plt_sec)
1187 memcpy (contents + trampoff, plt_full_entry, size);
1189 /* Hijack the old relocation for use as the PLTOFF reloc. */
1190 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1191 R_IA64_PLTOFF22);
1192 irel->r_offset = trampoff;
1194 else
1196 if (size == sizeof (oor_ip))
1198 memcpy (contents + trampoff, oor_ip, size);
1199 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1200 R_IA64_PCREL64I);
1201 irel->r_addend -= 16;
1202 irel->r_offset = trampoff + 2;
1204 else
1206 memcpy (contents + trampoff, oor_brl, size);
1207 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1208 R_IA64_PCREL60B);
1209 irel->r_offset = trampoff + 2;
1214 /* Record the fixup so we don't do it again this section. */
1215 f = (struct one_fixup *)
1216 bfd_malloc ((bfd_size_type) sizeof (*f));
1217 f->next = fixups;
1218 f->tsec = tsec;
1219 f->toff = toff;
1220 f->trampoff = trampoff;
1221 fixups = f;
1223 else
1225 /* If trampoline is out of range, there is nothing we
1226 can do. */
1227 offset = f->trampoff - (roff & (bfd_vma) -4);
1228 if (offset < -0x1000000 || offset > 0x0FFFFF0)
1229 continue;
1231 /* Nop out the reloc, since we're finalizing things here. */
1232 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
1235 /* Fix up the existing branch to hit the trampoline. */
1236 if (elfNN_ia64_install_value (contents + roff, offset, r_type)
1237 != bfd_reloc_ok)
1238 goto error_return;
1240 changed_contents = TRUE;
1241 changed_relocs = TRUE;
1243 else
1245 /* Fetch the gp. */
1246 if (gp == 0)
1248 bfd *obfd = sec->output_section->owner;
1249 gp = _bfd_get_gp_value (obfd);
1250 if (gp == 0)
1252 if (!elfNN_ia64_choose_gp (obfd, link_info))
1253 goto error_return;
1254 gp = _bfd_get_gp_value (obfd);
1258 /* If the data is out of range, do nothing. */
1259 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
1260 ||(bfd_signed_vma) (symaddr - gp) < -0x200000)
1261 continue;
1263 if (r_type == R_IA64_LTOFF22X)
1265 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
1266 R_IA64_GPREL22);
1267 changed_relocs = TRUE;
1268 if (dyn_i->want_gotx)
1270 dyn_i->want_gotx = 0;
1271 changed_got |= !dyn_i->want_got;
1274 else
1276 elfNN_ia64_relax_ldxmov (contents, roff);
1277 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
1278 changed_contents = TRUE;
1279 changed_relocs = TRUE;
1284 /* ??? If we created fixups, this may push the code segment large
1285 enough that the data segment moves, which will change the GP.
1286 Reset the GP so that we re-calculate next round. We need to
1287 do this at the _beginning_ of the next round; now will not do. */
1289 /* Clean up and go home. */
1290 while (fixups)
1292 struct one_fixup *f = fixups;
1293 fixups = fixups->next;
1294 free (f);
1297 if (isymbuf != NULL
1298 && symtab_hdr->contents != (unsigned char *) isymbuf)
1300 if (! link_info->keep_memory)
1301 free (isymbuf);
1302 else
1304 /* Cache the symbols for elf_link_input_bfd. */
1305 symtab_hdr->contents = (unsigned char *) isymbuf;
1309 if (contents != NULL
1310 && elf_section_data (sec)->this_hdr.contents != contents)
1312 if (!changed_contents && !link_info->keep_memory)
1313 free (contents);
1314 else
1316 /* Cache the section contents for elf_link_input_bfd. */
1317 elf_section_data (sec)->this_hdr.contents = contents;
1321 if (elf_section_data (sec)->relocs != internal_relocs)
1323 if (!changed_relocs)
1324 free (internal_relocs);
1325 else
1326 elf_section_data (sec)->relocs = internal_relocs;
1329 if (changed_got)
1331 struct elfNN_ia64_allocate_data data;
1332 data.info = link_info;
1333 data.ofs = 0;
1334 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
1336 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
1337 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
1338 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
1339 ia64_info->got_sec->size = data.ofs;
1341 if (ia64_info->root.dynamic_sections_created
1342 && ia64_info->rel_got_sec != NULL)
1344 /* Resize .rela.got. */
1345 ia64_info->rel_got_sec->size = 0;
1346 if (link_info->shared
1347 && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
1348 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
1349 data.only_got = TRUE;
1350 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries,
1351 &data);
1355 if (!link_info->need_relax_finalize)
1356 sec->need_finalize_relax = 0;
1358 *again = changed_contents || changed_relocs;
1359 return TRUE;
1361 error_return:
1362 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
1363 free (isymbuf);
1364 if (contents != NULL
1365 && elf_section_data (sec)->this_hdr.contents != contents)
1366 free (contents);
1367 if (internal_relocs != NULL
1368 && elf_section_data (sec)->relocs != internal_relocs)
1369 free (internal_relocs);
1370 return FALSE;
1373 static void
1374 elfNN_ia64_relax_ldxmov (contents, off)
1375 bfd_byte *contents;
1376 bfd_vma off;
1378 int shift, r1, r3;
1379 bfd_vma dword, insn;
1381 switch ((int)off & 0x3)
1383 case 0: shift = 5; break;
1384 case 1: shift = 14; off += 3; break;
1385 case 2: shift = 23; off += 6; break;
1386 default:
1387 abort ();
1390 dword = bfd_getl64 (contents + off);
1391 insn = (dword >> shift) & 0x1ffffffffffLL;
1393 r1 = (insn >> 6) & 127;
1394 r3 = (insn >> 20) & 127;
1395 if (r1 == r3)
1396 insn = 0x8000000; /* nop */
1397 else
1398 insn = (insn & 0x7f01fff) | 0x10800000000LL; /* (qp) mov r1 = r3 */
1400 dword &= ~(0x1ffffffffffLL << shift);
1401 dword |= (insn << shift);
1402 bfd_putl64 (dword, contents + off);
1405 /* Return TRUE if NAME is an unwind table section name. */
1407 static inline bfd_boolean
1408 is_unwind_section_name (abfd, name)
1409 bfd *abfd;
1410 const char *name;
1412 size_t len1, len2, len3;
1414 if (elfNN_ia64_hpux_vec (abfd->xvec)
1415 && !strcmp (name, ELF_STRING_ia64_unwind_hdr))
1416 return FALSE;
1418 len1 = sizeof (ELF_STRING_ia64_unwind) - 1;
1419 len2 = sizeof (ELF_STRING_ia64_unwind_info) - 1;
1420 len3 = sizeof (ELF_STRING_ia64_unwind_once) - 1;
1421 return ((strncmp (name, ELF_STRING_ia64_unwind, len1) == 0
1422 && strncmp (name, ELF_STRING_ia64_unwind_info, len2) != 0)
1423 || strncmp (name, ELF_STRING_ia64_unwind_once, len3) == 0);
1426 /* Handle an IA-64 specific section when reading an object file. This
1427 is called when bfd_section_from_shdr finds a section with an unknown
1428 type. */
1430 static bfd_boolean
1431 elfNN_ia64_section_from_shdr (bfd *abfd,
1432 Elf_Internal_Shdr *hdr,
1433 const char *name,
1434 int shindex)
1436 asection *newsect;
1438 /* There ought to be a place to keep ELF backend specific flags, but
1439 at the moment there isn't one. We just keep track of the
1440 sections by their name, instead. Fortunately, the ABI gives
1441 suggested names for all the MIPS specific sections, so we will
1442 probably get away with this. */
1443 switch (hdr->sh_type)
1445 case SHT_IA_64_UNWIND:
1446 case SHT_IA_64_HP_OPT_ANOT:
1447 break;
1449 case SHT_IA_64_EXT:
1450 if (strcmp (name, ELF_STRING_ia64_archext) != 0)
1451 return FALSE;
1452 break;
1454 default:
1455 return FALSE;
1458 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1459 return FALSE;
1460 newsect = hdr->bfd_section;
1462 return TRUE;
1465 /* Convert IA-64 specific section flags to bfd internal section flags. */
1467 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
1468 flag. */
1470 static bfd_boolean
1471 elfNN_ia64_section_flags (flags, hdr)
1472 flagword *flags;
1473 const Elf_Internal_Shdr *hdr;
1475 if (hdr->sh_flags & SHF_IA_64_SHORT)
1476 *flags |= SEC_SMALL_DATA;
1478 return TRUE;
1481 /* Set the correct type for an IA-64 ELF section. We do this by the
1482 section name, which is a hack, but ought to work. */
1484 static bfd_boolean
1485 elfNN_ia64_fake_sections (abfd, hdr, sec)
1486 bfd *abfd ATTRIBUTE_UNUSED;
1487 Elf_Internal_Shdr *hdr;
1488 asection *sec;
1490 register const char *name;
1492 name = bfd_get_section_name (abfd, sec);
1494 if (is_unwind_section_name (abfd, name))
1496 /* We don't have the sections numbered at this point, so sh_info
1497 is set later, in elfNN_ia64_final_write_processing. */
1498 hdr->sh_type = SHT_IA_64_UNWIND;
1499 hdr->sh_flags |= SHF_LINK_ORDER;
1501 else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
1502 hdr->sh_type = SHT_IA_64_EXT;
1503 else if (strcmp (name, ".HP.opt_annot") == 0)
1504 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
1505 else if (strcmp (name, ".reloc") == 0)
1506 /* This is an ugly, but unfortunately necessary hack that is
1507 needed when producing EFI binaries on IA-64. It tells
1508 elf.c:elf_fake_sections() not to consider ".reloc" as a section
1509 containing ELF relocation info. We need this hack in order to
1510 be able to generate ELF binaries that can be translated into
1511 EFI applications (which are essentially COFF objects). Those
1512 files contain a COFF ".reloc" section inside an ELFNN object,
1513 which would normally cause BFD to segfault because it would
1514 attempt to interpret this section as containing relocation
1515 entries for section "oc". With this hack enabled, ".reloc"
1516 will be treated as a normal data section, which will avoid the
1517 segfault. However, you won't be able to create an ELFNN binary
1518 with a section named "oc" that needs relocations, but that's
1519 the kind of ugly side-effects you get when detecting section
1520 types based on their names... In practice, this limitation is
1521 unlikely to bite. */
1522 hdr->sh_type = SHT_PROGBITS;
1524 if (sec->flags & SEC_SMALL_DATA)
1525 hdr->sh_flags |= SHF_IA_64_SHORT;
1527 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
1529 if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS))
1530 hdr->sh_flags |= SHF_IA_64_HP_TLS;
1532 return TRUE;
1535 /* The final processing done just before writing out an IA-64 ELF
1536 object file. */
1538 static void
1539 elfNN_ia64_final_write_processing (abfd, linker)
1540 bfd *abfd;
1541 bfd_boolean linker ATTRIBUTE_UNUSED;
1543 Elf_Internal_Shdr *hdr;
1544 asection *s;
1546 for (s = abfd->sections; s; s = s->next)
1548 hdr = &elf_section_data (s)->this_hdr;
1549 switch (hdr->sh_type)
1551 case SHT_IA_64_UNWIND:
1552 /* The IA-64 processor-specific ABI requires setting sh_link
1553 to the unwind section, whereas HP-UX requires sh_info to
1554 do so. For maximum compatibility, we'll set both for
1555 now... */
1556 hdr->sh_info = hdr->sh_link;
1557 break;
1561 if (! elf_flags_init (abfd))
1563 unsigned long flags = 0;
1565 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
1566 flags |= EF_IA_64_BE;
1567 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
1568 flags |= EF_IA_64_ABI64;
1570 elf_elfheader(abfd)->e_flags = flags;
1571 elf_flags_init (abfd) = TRUE;
1575 /* Hook called by the linker routine which adds symbols from an object
1576 file. We use it to put .comm items in .sbss, and not .bss. */
1578 static bfd_boolean
1579 elfNN_ia64_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1580 bfd *abfd;
1581 struct bfd_link_info *info;
1582 Elf_Internal_Sym *sym;
1583 const char **namep ATTRIBUTE_UNUSED;
1584 flagword *flagsp ATTRIBUTE_UNUSED;
1585 asection **secp;
1586 bfd_vma *valp;
1588 if (sym->st_shndx == SHN_COMMON
1589 && !info->relocatable
1590 && sym->st_size <= elf_gp_size (abfd))
1592 /* Common symbols less than or equal to -G nn bytes are
1593 automatically put into .sbss. */
1595 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1597 if (scomm == NULL)
1599 scomm = bfd_make_section_with_flags (abfd, ".scommon",
1600 (SEC_ALLOC
1601 | SEC_IS_COMMON
1602 | SEC_LINKER_CREATED));
1603 if (scomm == NULL)
1604 return FALSE;
1607 *secp = scomm;
1608 *valp = sym->st_size;
1611 return TRUE;
1614 /* Return the number of additional phdrs we will need. */
1616 static int
1617 elfNN_ia64_additional_program_headers (abfd)
1618 bfd *abfd;
1620 asection *s;
1621 int ret = 0;
1623 /* See if we need a PT_IA_64_ARCHEXT segment. */
1624 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1625 if (s && (s->flags & SEC_LOAD))
1626 ++ret;
1628 /* Count how many PT_IA_64_UNWIND segments we need. */
1629 for (s = abfd->sections; s; s = s->next)
1630 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
1631 ++ret;
1633 return ret;
1636 static bfd_boolean
1637 elfNN_ia64_modify_segment_map (abfd, info)
1638 bfd *abfd;
1639 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1641 struct elf_segment_map *m, **pm;
1642 Elf_Internal_Shdr *hdr;
1643 asection *s;
1645 /* If we need a PT_IA_64_ARCHEXT segment, it must come before
1646 all PT_LOAD segments. */
1647 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
1648 if (s && (s->flags & SEC_LOAD))
1650 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1651 if (m->p_type == PT_IA_64_ARCHEXT)
1652 break;
1653 if (m == NULL)
1655 m = ((struct elf_segment_map *)
1656 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1657 if (m == NULL)
1658 return FALSE;
1660 m->p_type = PT_IA_64_ARCHEXT;
1661 m->count = 1;
1662 m->sections[0] = s;
1664 /* We want to put it after the PHDR and INTERP segments. */
1665 pm = &elf_tdata (abfd)->segment_map;
1666 while (*pm != NULL
1667 && ((*pm)->p_type == PT_PHDR
1668 || (*pm)->p_type == PT_INTERP))
1669 pm = &(*pm)->next;
1671 m->next = *pm;
1672 *pm = m;
1676 /* Install PT_IA_64_UNWIND segments, if needed. */
1677 for (s = abfd->sections; s; s = s->next)
1679 hdr = &elf_section_data (s)->this_hdr;
1680 if (hdr->sh_type != SHT_IA_64_UNWIND)
1681 continue;
1683 if (s && (s->flags & SEC_LOAD))
1685 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1686 if (m->p_type == PT_IA_64_UNWIND)
1688 int i;
1690 /* Look through all sections in the unwind segment
1691 for a match since there may be multiple sections
1692 to a segment. */
1693 for (i = m->count - 1; i >= 0; --i)
1694 if (m->sections[i] == s)
1695 break;
1697 if (i >= 0)
1698 break;
1701 if (m == NULL)
1703 m = ((struct elf_segment_map *)
1704 bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
1705 if (m == NULL)
1706 return FALSE;
1708 m->p_type = PT_IA_64_UNWIND;
1709 m->count = 1;
1710 m->sections[0] = s;
1711 m->next = NULL;
1713 /* We want to put it last. */
1714 pm = &elf_tdata (abfd)->segment_map;
1715 while (*pm != NULL)
1716 pm = &(*pm)->next;
1717 *pm = m;
1722 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
1723 the input sections for each output section in the segment and testing
1724 for SHF_IA_64_NORECOV on each. */
1725 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
1726 if (m->p_type == PT_LOAD)
1728 int i;
1729 for (i = m->count - 1; i >= 0; --i)
1731 struct bfd_link_order *order = m->sections[i]->map_head.link_order;
1732 while (order)
1734 if (order->type == bfd_indirect_link_order)
1736 asection *is = order->u.indirect.section;
1737 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
1738 if (flags & SHF_IA_64_NORECOV)
1740 m->p_flags |= PF_IA_64_NORECOV;
1741 goto found;
1744 order = order->next;
1747 found:;
1750 return TRUE;
1753 /* According to the Tahoe assembler spec, all labels starting with a
1754 '.' are local. */
1756 static bfd_boolean
1757 elfNN_ia64_is_local_label_name (abfd, name)
1758 bfd *abfd ATTRIBUTE_UNUSED;
1759 const char *name;
1761 return name[0] == '.';
1764 /* Should we do dynamic things to this symbol? */
1766 static bfd_boolean
1767 elfNN_ia64_dynamic_symbol_p (h, info, r_type)
1768 struct elf_link_hash_entry *h;
1769 struct bfd_link_info *info;
1770 int r_type;
1772 bfd_boolean ignore_protected
1773 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */
1774 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
1776 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
1779 static struct bfd_hash_entry*
1780 elfNN_ia64_new_elf_hash_entry (entry, table, string)
1781 struct bfd_hash_entry *entry;
1782 struct bfd_hash_table *table;
1783 const char *string;
1785 struct elfNN_ia64_link_hash_entry *ret;
1786 ret = (struct elfNN_ia64_link_hash_entry *) entry;
1788 /* Allocate the structure if it has not already been allocated by a
1789 subclass. */
1790 if (!ret)
1791 ret = bfd_hash_allocate (table, sizeof (*ret));
1793 if (!ret)
1794 return 0;
1796 /* Call the allocation method of the superclass. */
1797 ret = ((struct elfNN_ia64_link_hash_entry *)
1798 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1799 table, string));
1801 ret->info = NULL;
1802 return (struct bfd_hash_entry *) ret;
1805 static void
1806 elfNN_ia64_hash_copy_indirect (info, xdir, xind)
1807 struct bfd_link_info *info;
1808 struct elf_link_hash_entry *xdir, *xind;
1810 struct elfNN_ia64_link_hash_entry *dir, *ind;
1812 dir = (struct elfNN_ia64_link_hash_entry *) xdir;
1813 ind = (struct elfNN_ia64_link_hash_entry *) xind;
1815 /* Copy down any references that we may have already seen to the
1816 symbol which just became indirect. */
1818 dir->root.ref_dynamic |= ind->root.ref_dynamic;
1819 dir->root.ref_regular |= ind->root.ref_regular;
1820 dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
1821 dir->root.needs_plt |= ind->root.needs_plt;
1823 if (ind->root.root.type != bfd_link_hash_indirect)
1824 return;
1826 /* Copy over the got and plt data. This would have been done
1827 by check_relocs. */
1829 if (ind->info != NULL)
1831 struct elfNN_ia64_dyn_sym_info *dyn_i;
1832 struct elfNN_ia64_dyn_sym_info **pdyn;
1834 pdyn = &dir->info;
1835 while ((dyn_i = *pdyn) != NULL)
1836 pdyn = &dyn_i->next;
1837 *pdyn = dyn_i = ind->info;
1838 ind->info = NULL;
1840 /* Fix up the dyn_sym_info pointers to the global symbol. */
1841 for (; dyn_i; dyn_i = dyn_i->next)
1842 dyn_i->h = &dir->root;
1845 /* Copy over the dynindx. */
1847 if (ind->root.dynindx != -1)
1849 if (dir->root.dynindx != -1)
1850 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1851 dir->root.dynstr_index);
1852 dir->root.dynindx = ind->root.dynindx;
1853 dir->root.dynstr_index = ind->root.dynstr_index;
1854 ind->root.dynindx = -1;
1855 ind->root.dynstr_index = 0;
1859 static void
1860 elfNN_ia64_hash_hide_symbol (info, xh, force_local)
1861 struct bfd_link_info *info;
1862 struct elf_link_hash_entry *xh;
1863 bfd_boolean force_local;
1865 struct elfNN_ia64_link_hash_entry *h;
1866 struct elfNN_ia64_dyn_sym_info *dyn_i;
1868 h = (struct elfNN_ia64_link_hash_entry *)xh;
1870 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
1872 for (dyn_i = h->info; dyn_i; dyn_i = dyn_i->next)
1874 dyn_i->want_plt2 = 0;
1875 dyn_i->want_plt = 0;
1879 /* Compute a hash of a local hash entry. */
1881 static hashval_t
1882 elfNN_ia64_local_htab_hash (ptr)
1883 const void *ptr;
1885 struct elfNN_ia64_local_hash_entry *entry
1886 = (struct elfNN_ia64_local_hash_entry *) ptr;
1888 return (((entry->id & 0xff) << 24) | ((entry->id & 0xff00) << 8))
1889 ^ entry->r_sym ^ (entry->id >> 16);
1892 /* Compare local hash entries. */
1894 static int
1895 elfNN_ia64_local_htab_eq (ptr1, ptr2)
1896 const void *ptr1, *ptr2;
1898 struct elfNN_ia64_local_hash_entry *entry1
1899 = (struct elfNN_ia64_local_hash_entry *) ptr1;
1900 struct elfNN_ia64_local_hash_entry *entry2
1901 = (struct elfNN_ia64_local_hash_entry *) ptr2;
1903 return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
1906 /* Create the derived linker hash table. The IA-64 ELF port uses this
1907 derived hash table to keep information specific to the IA-64 ElF
1908 linker (without using static variables). */
1910 static struct bfd_link_hash_table*
1911 elfNN_ia64_hash_table_create (abfd)
1912 bfd *abfd;
1914 struct elfNN_ia64_link_hash_table *ret;
1916 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
1917 if (!ret)
1918 return 0;
1920 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1921 elfNN_ia64_new_elf_hash_entry,
1922 sizeof (struct elfNN_ia64_link_hash_entry)))
1924 free (ret);
1925 return 0;
1928 ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
1929 elfNN_ia64_local_htab_eq, NULL);
1930 ret->loc_hash_memory = objalloc_create ();
1931 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1933 free (ret);
1934 return 0;
1937 return &ret->root.root;
1940 /* Destroy IA-64 linker hash table. */
1942 static void
1943 elfNN_ia64_hash_table_free (hash)
1944 struct bfd_link_hash_table *hash;
1946 struct elfNN_ia64_link_hash_table *ia64_info
1947 = (struct elfNN_ia64_link_hash_table *) hash;
1948 if (ia64_info->loc_hash_table)
1949 htab_delete (ia64_info->loc_hash_table);
1950 if (ia64_info->loc_hash_memory)
1951 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
1952 _bfd_generic_link_hash_table_free (hash);
1955 /* Traverse both local and global hash tables. */
1957 struct elfNN_ia64_dyn_sym_traverse_data
1959 bfd_boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
1960 PTR data;
1963 static bfd_boolean
1964 elfNN_ia64_global_dyn_sym_thunk (xentry, xdata)
1965 struct bfd_hash_entry *xentry;
1966 PTR xdata;
1968 struct elfNN_ia64_link_hash_entry *entry
1969 = (struct elfNN_ia64_link_hash_entry *) xentry;
1970 struct elfNN_ia64_dyn_sym_traverse_data *data
1971 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1972 struct elfNN_ia64_dyn_sym_info *dyn_i;
1974 if (entry->root.root.type == bfd_link_hash_warning)
1975 entry = (struct elfNN_ia64_link_hash_entry *) entry->root.root.u.i.link;
1977 for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
1978 if (! (*data->func) (dyn_i, data->data))
1979 return FALSE;
1980 return TRUE;
1983 static bfd_boolean
1984 elfNN_ia64_local_dyn_sym_thunk (slot, xdata)
1985 void **slot;
1986 PTR xdata;
1988 struct elfNN_ia64_local_hash_entry *entry
1989 = (struct elfNN_ia64_local_hash_entry *) *slot;
1990 struct elfNN_ia64_dyn_sym_traverse_data *data
1991 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
1992 struct elfNN_ia64_dyn_sym_info *dyn_i;
1994 for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
1995 if (! (*data->func) (dyn_i, data->data))
1996 return 0;
1997 return 1;
2000 static void
2001 elfNN_ia64_dyn_sym_traverse (ia64_info, func, data)
2002 struct elfNN_ia64_link_hash_table *ia64_info;
2003 bfd_boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
2004 PTR data;
2006 struct elfNN_ia64_dyn_sym_traverse_data xdata;
2008 xdata.func = func;
2009 xdata.data = data;
2011 elf_link_hash_traverse (&ia64_info->root,
2012 elfNN_ia64_global_dyn_sym_thunk, &xdata);
2013 htab_traverse (ia64_info->loc_hash_table,
2014 elfNN_ia64_local_dyn_sym_thunk, &xdata);
2017 static bfd_boolean
2018 elfNN_ia64_create_dynamic_sections (abfd, info)
2019 bfd *abfd;
2020 struct bfd_link_info *info;
2022 struct elfNN_ia64_link_hash_table *ia64_info;
2023 asection *s;
2025 if (! _bfd_elf_create_dynamic_sections (abfd, info))
2026 return FALSE;
2028 ia64_info = elfNN_ia64_hash_table (info);
2030 ia64_info->plt_sec = bfd_get_section_by_name (abfd, ".plt");
2031 ia64_info->got_sec = bfd_get_section_by_name (abfd, ".got");
2034 flagword flags = bfd_get_section_flags (abfd, ia64_info->got_sec);
2035 bfd_set_section_flags (abfd, ia64_info->got_sec, SEC_SMALL_DATA | flags);
2036 /* The .got section is always aligned at 8 bytes. */
2037 bfd_set_section_alignment (abfd, ia64_info->got_sec, 3);
2040 if (!get_pltoff (abfd, info, ia64_info))
2041 return FALSE;
2043 s = bfd_make_section_with_flags (abfd, ".rela.IA_64.pltoff",
2044 (SEC_ALLOC | SEC_LOAD
2045 | SEC_HAS_CONTENTS
2046 | SEC_IN_MEMORY
2047 | SEC_LINKER_CREATED
2048 | SEC_READONLY));
2049 if (s == NULL
2050 || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN))
2051 return FALSE;
2052 ia64_info->rel_pltoff_sec = s;
2054 s = bfd_make_section_with_flags (abfd, ".rela.got",
2055 (SEC_ALLOC | SEC_LOAD
2056 | SEC_HAS_CONTENTS
2057 | SEC_IN_MEMORY
2058 | SEC_LINKER_CREATED
2059 | SEC_READONLY));
2060 if (s == NULL
2061 || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN))
2062 return FALSE;
2063 ia64_info->rel_got_sec = s;
2065 return TRUE;
2068 /* Find and/or create a hash entry for local symbol. */
2069 static struct elfNN_ia64_local_hash_entry *
2070 get_local_sym_hash (ia64_info, abfd, rel, create)
2071 struct elfNN_ia64_link_hash_table *ia64_info;
2072 bfd *abfd;
2073 const Elf_Internal_Rela *rel;
2074 bfd_boolean create;
2076 struct elfNN_ia64_local_hash_entry e, *ret;
2077 asection *sec = abfd->sections;
2078 hashval_t h = (((sec->id & 0xff) << 24) | ((sec->id & 0xff00) << 8))
2079 ^ ELFNN_R_SYM (rel->r_info) ^ (sec->id >> 16);
2080 void **slot;
2082 e.id = sec->id;
2083 e.r_sym = ELFNN_R_SYM (rel->r_info);
2084 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
2085 create ? INSERT : NO_INSERT);
2087 if (!slot)
2088 return NULL;
2090 if (*slot)
2091 return (struct elfNN_ia64_local_hash_entry *) *slot;
2093 ret = (struct elfNN_ia64_local_hash_entry *)
2094 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
2095 sizeof (struct elfNN_ia64_local_hash_entry));
2096 if (ret)
2098 memset (ret, 0, sizeof (*ret));
2099 ret->id = sec->id;
2100 ret->r_sym = ELFNN_R_SYM (rel->r_info);
2101 *slot = ret;
2103 return ret;
2106 /* Find and/or create a descriptor for dynamic symbol info. This will
2107 vary based on global or local symbol, and the addend to the reloc. */
2109 static struct elfNN_ia64_dyn_sym_info *
2110 get_dyn_sym_info (ia64_info, h, abfd, rel, create)
2111 struct elfNN_ia64_link_hash_table *ia64_info;
2112 struct elf_link_hash_entry *h;
2113 bfd *abfd;
2114 const Elf_Internal_Rela *rel;
2115 bfd_boolean create;
2117 struct elfNN_ia64_dyn_sym_info **pp;
2118 struct elfNN_ia64_dyn_sym_info *dyn_i;
2119 bfd_vma addend = rel ? rel->r_addend : 0;
2121 if (h)
2122 pp = &((struct elfNN_ia64_link_hash_entry *)h)->info;
2123 else
2125 struct elfNN_ia64_local_hash_entry *loc_h;
2127 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
2128 if (!loc_h)
2130 BFD_ASSERT (!create);
2131 return NULL;
2134 pp = &loc_h->info;
2137 for (dyn_i = *pp; dyn_i && dyn_i->addend != addend; dyn_i = *pp)
2138 pp = &dyn_i->next;
2140 if (dyn_i == NULL && create)
2142 dyn_i = ((struct elfNN_ia64_dyn_sym_info *)
2143 bfd_zalloc (abfd, (bfd_size_type) sizeof *dyn_i));
2144 *pp = dyn_i;
2145 dyn_i->addend = addend;
2148 return dyn_i;
2151 static asection *
2152 get_got (abfd, info, ia64_info)
2153 bfd *abfd;
2154 struct bfd_link_info *info;
2155 struct elfNN_ia64_link_hash_table *ia64_info;
2157 asection *got;
2158 bfd *dynobj;
2160 got = ia64_info->got_sec;
2161 if (!got)
2163 flagword flags;
2165 dynobj = ia64_info->root.dynobj;
2166 if (!dynobj)
2167 ia64_info->root.dynobj = dynobj = abfd;
2168 if (!_bfd_elf_create_got_section (dynobj, info))
2169 return 0;
2171 got = bfd_get_section_by_name (dynobj, ".got");
2172 BFD_ASSERT (got);
2173 ia64_info->got_sec = got;
2175 /* The .got section is always aligned at 8 bytes. */
2176 if (!bfd_set_section_alignment (abfd, got, 3))
2177 return 0;
2179 flags = bfd_get_section_flags (abfd, got);
2180 bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags);
2183 return got;
2186 /* Create function descriptor section (.opd). This section is called .opd
2187 because it contains "official procedure descriptors". The "official"
2188 refers to the fact that these descriptors are used when taking the address
2189 of a procedure, thus ensuring a unique address for each procedure. */
2191 static asection *
2192 get_fptr (abfd, info, ia64_info)
2193 bfd *abfd;
2194 struct bfd_link_info *info;
2195 struct elfNN_ia64_link_hash_table *ia64_info;
2197 asection *fptr;
2198 bfd *dynobj;
2200 fptr = ia64_info->fptr_sec;
2201 if (!fptr)
2203 dynobj = ia64_info->root.dynobj;
2204 if (!dynobj)
2205 ia64_info->root.dynobj = dynobj = abfd;
2207 fptr = bfd_make_section_with_flags (dynobj, ".opd",
2208 (SEC_ALLOC
2209 | SEC_LOAD
2210 | SEC_HAS_CONTENTS
2211 | SEC_IN_MEMORY
2212 | (info->pie ? 0 : SEC_READONLY)
2213 | SEC_LINKER_CREATED));
2214 if (!fptr
2215 || !bfd_set_section_alignment (abfd, fptr, 4))
2217 BFD_ASSERT (0);
2218 return NULL;
2221 ia64_info->fptr_sec = fptr;
2223 if (info->pie)
2225 asection *fptr_rel;
2226 fptr_rel = bfd_make_section_with_flags (dynobj, ".rela.opd",
2227 (SEC_ALLOC | SEC_LOAD
2228 | SEC_HAS_CONTENTS
2229 | SEC_IN_MEMORY
2230 | SEC_LINKER_CREATED
2231 | SEC_READONLY));
2232 if (fptr_rel == NULL
2233 || !bfd_set_section_alignment (abfd, fptr_rel,
2234 LOG_SECTION_ALIGN))
2236 BFD_ASSERT (0);
2237 return NULL;
2240 ia64_info->rel_fptr_sec = fptr_rel;
2244 return fptr;
2247 static asection *
2248 get_pltoff (abfd, info, ia64_info)
2249 bfd *abfd;
2250 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2251 struct elfNN_ia64_link_hash_table *ia64_info;
2253 asection *pltoff;
2254 bfd *dynobj;
2256 pltoff = ia64_info->pltoff_sec;
2257 if (!pltoff)
2259 dynobj = ia64_info->root.dynobj;
2260 if (!dynobj)
2261 ia64_info->root.dynobj = dynobj = abfd;
2263 pltoff = bfd_make_section_with_flags (dynobj,
2264 ELF_STRING_ia64_pltoff,
2265 (SEC_ALLOC
2266 | SEC_LOAD
2267 | SEC_HAS_CONTENTS
2268 | SEC_IN_MEMORY
2269 | SEC_SMALL_DATA
2270 | SEC_LINKER_CREATED));
2271 if (!pltoff
2272 || !bfd_set_section_alignment (abfd, pltoff, 4))
2274 BFD_ASSERT (0);
2275 return NULL;
2278 ia64_info->pltoff_sec = pltoff;
2281 return pltoff;
2284 static asection *
2285 get_reloc_section (abfd, ia64_info, sec, create)
2286 bfd *abfd;
2287 struct elfNN_ia64_link_hash_table *ia64_info;
2288 asection *sec;
2289 bfd_boolean create;
2291 const char *srel_name;
2292 asection *srel;
2293 bfd *dynobj;
2295 srel_name = (bfd_elf_string_from_elf_section
2296 (abfd, elf_elfheader(abfd)->e_shstrndx,
2297 elf_section_data(sec)->rel_hdr.sh_name));
2298 if (srel_name == NULL)
2299 return NULL;
2301 BFD_ASSERT ((strncmp (srel_name, ".rela", 5) == 0
2302 && strcmp (bfd_get_section_name (abfd, sec),
2303 srel_name+5) == 0)
2304 || (strncmp (srel_name, ".rel", 4) == 0
2305 && strcmp (bfd_get_section_name (abfd, sec),
2306 srel_name+4) == 0));
2308 dynobj = ia64_info->root.dynobj;
2309 if (!dynobj)
2310 ia64_info->root.dynobj = dynobj = abfd;
2312 srel = bfd_get_section_by_name (dynobj, srel_name);
2313 if (srel == NULL && create)
2315 srel = bfd_make_section_with_flags (dynobj, srel_name,
2316 (SEC_ALLOC | SEC_LOAD
2317 | SEC_HAS_CONTENTS
2318 | SEC_IN_MEMORY
2319 | SEC_LINKER_CREATED
2320 | SEC_READONLY));
2321 if (srel == NULL
2322 || !bfd_set_section_alignment (dynobj, srel,
2323 LOG_SECTION_ALIGN))
2324 return NULL;
2327 return srel;
2330 static bfd_boolean
2331 count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
2332 asection *srel, int type, bfd_boolean reltext)
2334 struct elfNN_ia64_dyn_reloc_entry *rent;
2336 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2337 if (rent->srel == srel && rent->type == type)
2338 break;
2340 if (!rent)
2342 rent = ((struct elfNN_ia64_dyn_reloc_entry *)
2343 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
2344 if (!rent)
2345 return FALSE;
2347 rent->next = dyn_i->reloc_entries;
2348 rent->srel = srel;
2349 rent->type = type;
2350 rent->count = 0;
2351 dyn_i->reloc_entries = rent;
2353 rent->reltext = reltext;
2354 rent->count++;
2356 return TRUE;
2359 static bfd_boolean
2360 elfNN_ia64_check_relocs (abfd, info, sec, relocs)
2361 bfd *abfd;
2362 struct bfd_link_info *info;
2363 asection *sec;
2364 const Elf_Internal_Rela *relocs;
2366 struct elfNN_ia64_link_hash_table *ia64_info;
2367 const Elf_Internal_Rela *relend;
2368 Elf_Internal_Shdr *symtab_hdr;
2369 const Elf_Internal_Rela *rel;
2370 asection *got, *fptr, *srel, *pltoff;
2372 if (info->relocatable)
2373 return TRUE;
2375 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2376 ia64_info = elfNN_ia64_hash_table (info);
2378 got = fptr = srel = pltoff = NULL;
2380 relend = relocs + sec->reloc_count;
2381 for (rel = relocs; rel < relend; ++rel)
2383 enum {
2384 NEED_GOT = 1,
2385 NEED_GOTX = 2,
2386 NEED_FPTR = 4,
2387 NEED_PLTOFF = 8,
2388 NEED_MIN_PLT = 16,
2389 NEED_FULL_PLT = 32,
2390 NEED_DYNREL = 64,
2391 NEED_LTOFF_FPTR = 128,
2392 NEED_TPREL = 256,
2393 NEED_DTPMOD = 512,
2394 NEED_DTPREL = 1024
2397 struct elf_link_hash_entry *h = NULL;
2398 unsigned long r_symndx = ELFNN_R_SYM (rel->r_info);
2399 struct elfNN_ia64_dyn_sym_info *dyn_i;
2400 int need_entry;
2401 bfd_boolean maybe_dynamic;
2402 int dynrel_type = R_IA64_NONE;
2404 if (r_symndx >= symtab_hdr->sh_info)
2406 /* We're dealing with a global symbol -- find its hash entry
2407 and mark it as being referenced. */
2408 long indx = r_symndx - symtab_hdr->sh_info;
2409 h = elf_sym_hashes (abfd)[indx];
2410 while (h->root.type == bfd_link_hash_indirect
2411 || h->root.type == bfd_link_hash_warning)
2412 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2414 h->ref_regular = 1;
2417 /* We can only get preliminary data on whether a symbol is
2418 locally or externally defined, as not all of the input files
2419 have yet been processed. Do something with what we know, as
2420 this may help reduce memory usage and processing time later. */
2421 maybe_dynamic = FALSE;
2422 if (h && ((!info->executable
2423 && (!info->symbolic
2424 || info->unresolved_syms_in_shared_libs == RM_IGNORE))
2425 || !h->def_regular
2426 || h->root.type == bfd_link_hash_defweak))
2427 maybe_dynamic = TRUE;
2429 need_entry = 0;
2430 switch (ELFNN_R_TYPE (rel->r_info))
2432 case R_IA64_TPREL64MSB:
2433 case R_IA64_TPREL64LSB:
2434 if (info->shared || maybe_dynamic)
2435 need_entry = NEED_DYNREL;
2436 dynrel_type = R_IA64_TPREL64LSB;
2437 if (info->shared)
2438 info->flags |= DF_STATIC_TLS;
2439 break;
2441 case R_IA64_LTOFF_TPREL22:
2442 need_entry = NEED_TPREL;
2443 if (info->shared)
2444 info->flags |= DF_STATIC_TLS;
2445 break;
2447 case R_IA64_DTPREL32MSB:
2448 case R_IA64_DTPREL32LSB:
2449 case R_IA64_DTPREL64MSB:
2450 case R_IA64_DTPREL64LSB:
2451 if (info->shared || maybe_dynamic)
2452 need_entry = NEED_DYNREL;
2453 dynrel_type = R_IA64_DTPRELNNLSB;
2454 break;
2456 case R_IA64_LTOFF_DTPREL22:
2457 need_entry = NEED_DTPREL;
2458 break;
2460 case R_IA64_DTPMOD64MSB:
2461 case R_IA64_DTPMOD64LSB:
2462 if (info->shared || maybe_dynamic)
2463 need_entry = NEED_DYNREL;
2464 dynrel_type = R_IA64_DTPMOD64LSB;
2465 break;
2467 case R_IA64_LTOFF_DTPMOD22:
2468 need_entry = NEED_DTPMOD;
2469 break;
2471 case R_IA64_LTOFF_FPTR22:
2472 case R_IA64_LTOFF_FPTR64I:
2473 case R_IA64_LTOFF_FPTR32MSB:
2474 case R_IA64_LTOFF_FPTR32LSB:
2475 case R_IA64_LTOFF_FPTR64MSB:
2476 case R_IA64_LTOFF_FPTR64LSB:
2477 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
2478 break;
2480 case R_IA64_FPTR64I:
2481 case R_IA64_FPTR32MSB:
2482 case R_IA64_FPTR32LSB:
2483 case R_IA64_FPTR64MSB:
2484 case R_IA64_FPTR64LSB:
2485 if (info->shared || h)
2486 need_entry = NEED_FPTR | NEED_DYNREL;
2487 else
2488 need_entry = NEED_FPTR;
2489 dynrel_type = R_IA64_FPTRNNLSB;
2490 break;
2492 case R_IA64_LTOFF22:
2493 case R_IA64_LTOFF64I:
2494 need_entry = NEED_GOT;
2495 break;
2497 case R_IA64_LTOFF22X:
2498 need_entry = NEED_GOTX;
2499 break;
2501 case R_IA64_PLTOFF22:
2502 case R_IA64_PLTOFF64I:
2503 case R_IA64_PLTOFF64MSB:
2504 case R_IA64_PLTOFF64LSB:
2505 need_entry = NEED_PLTOFF;
2506 if (h)
2508 if (maybe_dynamic)
2509 need_entry |= NEED_MIN_PLT;
2511 else
2513 (*info->callbacks->warning)
2514 (info, _("@pltoff reloc against local symbol"), 0,
2515 abfd, 0, (bfd_vma) 0);
2517 break;
2519 case R_IA64_PCREL21B:
2520 case R_IA64_PCREL60B:
2521 /* Depending on where this symbol is defined, we may or may not
2522 need a full plt entry. Only skip if we know we'll not need
2523 the entry -- static or symbolic, and the symbol definition
2524 has already been seen. */
2525 if (maybe_dynamic && rel->r_addend == 0)
2526 need_entry = NEED_FULL_PLT;
2527 break;
2529 case R_IA64_IMM14:
2530 case R_IA64_IMM22:
2531 case R_IA64_IMM64:
2532 case R_IA64_DIR32MSB:
2533 case R_IA64_DIR32LSB:
2534 case R_IA64_DIR64MSB:
2535 case R_IA64_DIR64LSB:
2536 /* Shared objects will always need at least a REL relocation. */
2537 if (info->shared || maybe_dynamic)
2538 need_entry = NEED_DYNREL;
2539 dynrel_type = R_IA64_DIRNNLSB;
2540 break;
2542 case R_IA64_IPLTMSB:
2543 case R_IA64_IPLTLSB:
2544 /* Shared objects will always need at least a REL relocation. */
2545 if (info->shared || maybe_dynamic)
2546 need_entry = NEED_DYNREL;
2547 dynrel_type = R_IA64_IPLTLSB;
2548 break;
2550 case R_IA64_PCREL22:
2551 case R_IA64_PCREL64I:
2552 case R_IA64_PCREL32MSB:
2553 case R_IA64_PCREL32LSB:
2554 case R_IA64_PCREL64MSB:
2555 case R_IA64_PCREL64LSB:
2556 if (maybe_dynamic)
2557 need_entry = NEED_DYNREL;
2558 dynrel_type = R_IA64_PCRELNNLSB;
2559 break;
2562 if (!need_entry)
2563 continue;
2565 if ((need_entry & NEED_FPTR) != 0
2566 && rel->r_addend)
2568 (*info->callbacks->warning)
2569 (info, _("non-zero addend in @fptr reloc"), 0,
2570 abfd, 0, (bfd_vma) 0);
2573 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE);
2575 /* Record whether or not this is a local symbol. */
2576 dyn_i->h = h;
2578 /* Create what's needed. */
2579 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
2580 | NEED_DTPMOD | NEED_DTPREL))
2582 if (!got)
2584 got = get_got (abfd, info, ia64_info);
2585 if (!got)
2586 return FALSE;
2588 if (need_entry & NEED_GOT)
2589 dyn_i->want_got = 1;
2590 if (need_entry & NEED_GOTX)
2591 dyn_i->want_gotx = 1;
2592 if (need_entry & NEED_TPREL)
2593 dyn_i->want_tprel = 1;
2594 if (need_entry & NEED_DTPMOD)
2595 dyn_i->want_dtpmod = 1;
2596 if (need_entry & NEED_DTPREL)
2597 dyn_i->want_dtprel = 1;
2599 if (need_entry & NEED_FPTR)
2601 if (!fptr)
2603 fptr = get_fptr (abfd, info, ia64_info);
2604 if (!fptr)
2605 return FALSE;
2608 /* FPTRs for shared libraries are allocated by the dynamic
2609 linker. Make sure this local symbol will appear in the
2610 dynamic symbol table. */
2611 if (!h && info->shared)
2613 if (! (bfd_elf_link_record_local_dynamic_symbol
2614 (info, abfd, (long) r_symndx)))
2615 return FALSE;
2618 dyn_i->want_fptr = 1;
2620 if (need_entry & NEED_LTOFF_FPTR)
2621 dyn_i->want_ltoff_fptr = 1;
2622 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
2624 if (!ia64_info->root.dynobj)
2625 ia64_info->root.dynobj = abfd;
2626 h->needs_plt = 1;
2627 dyn_i->want_plt = 1;
2629 if (need_entry & NEED_FULL_PLT)
2630 dyn_i->want_plt2 = 1;
2631 if (need_entry & NEED_PLTOFF)
2633 /* This is needed here, in case @pltoff is used in a non-shared
2634 link. */
2635 if (!pltoff)
2637 pltoff = get_pltoff (abfd, info, ia64_info);
2638 if (!pltoff)
2639 return FALSE;
2642 dyn_i->want_pltoff = 1;
2644 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
2646 if (!srel)
2648 srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
2649 if (!srel)
2650 return FALSE;
2652 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
2653 (sec->flags & SEC_READONLY) != 0))
2654 return FALSE;
2658 return TRUE;
2661 /* For cleanliness, and potentially faster dynamic loading, allocate
2662 external GOT entries first. */
2664 static bfd_boolean
2665 allocate_global_data_got (dyn_i, data)
2666 struct elfNN_ia64_dyn_sym_info *dyn_i;
2667 PTR data;
2669 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2671 if ((dyn_i->want_got || dyn_i->want_gotx)
2672 && ! dyn_i->want_fptr
2673 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2675 dyn_i->got_offset = x->ofs;
2676 x->ofs += 8;
2678 if (dyn_i->want_tprel)
2680 dyn_i->tprel_offset = x->ofs;
2681 x->ofs += 8;
2683 if (dyn_i->want_dtpmod)
2685 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2687 dyn_i->dtpmod_offset = x->ofs;
2688 x->ofs += 8;
2690 else
2692 struct elfNN_ia64_link_hash_table *ia64_info;
2694 ia64_info = elfNN_ia64_hash_table (x->info);
2695 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
2697 ia64_info->self_dtpmod_offset = x->ofs;
2698 x->ofs += 8;
2700 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
2703 if (dyn_i->want_dtprel)
2705 dyn_i->dtprel_offset = x->ofs;
2706 x->ofs += 8;
2708 return TRUE;
2711 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
2713 static bfd_boolean
2714 allocate_global_fptr_got (dyn_i, data)
2715 struct elfNN_ia64_dyn_sym_info *dyn_i;
2716 PTR data;
2718 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2720 if (dyn_i->want_got
2721 && dyn_i->want_fptr
2722 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
2724 dyn_i->got_offset = x->ofs;
2725 x->ofs += 8;
2727 return TRUE;
2730 /* Lastly, allocate all the GOT entries for local data. */
2732 static bfd_boolean
2733 allocate_local_got (dyn_i, data)
2734 struct elfNN_ia64_dyn_sym_info *dyn_i;
2735 PTR data;
2737 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2739 if ((dyn_i->want_got || dyn_i->want_gotx)
2740 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
2742 dyn_i->got_offset = x->ofs;
2743 x->ofs += 8;
2745 return TRUE;
2748 /* Search for the index of a global symbol in it's defining object file. */
2750 static long
2751 global_sym_index (h)
2752 struct elf_link_hash_entry *h;
2754 struct elf_link_hash_entry **p;
2755 bfd *obj;
2757 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2758 || h->root.type == bfd_link_hash_defweak);
2760 obj = h->root.u.def.section->owner;
2761 for (p = elf_sym_hashes (obj); *p != h; ++p)
2762 continue;
2764 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
2767 /* Allocate function descriptors. We can do these for every function
2768 in a main executable that is not exported. */
2770 static bfd_boolean
2771 allocate_fptr (dyn_i, data)
2772 struct elfNN_ia64_dyn_sym_info *dyn_i;
2773 PTR data;
2775 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2777 if (dyn_i->want_fptr)
2779 struct elf_link_hash_entry *h = dyn_i->h;
2781 if (h)
2782 while (h->root.type == bfd_link_hash_indirect
2783 || h->root.type == bfd_link_hash_warning)
2784 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2786 if (!x->info->executable
2787 && (!h
2788 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2789 || (h->root.type != bfd_link_hash_undefweak
2790 && h->root.type != bfd_link_hash_undefined)))
2792 if (h && h->dynindx == -1)
2794 BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
2795 || (h->root.type == bfd_link_hash_defweak));
2797 if (!bfd_elf_link_record_local_dynamic_symbol
2798 (x->info, h->root.u.def.section->owner,
2799 global_sym_index (h)))
2800 return FALSE;
2803 dyn_i->want_fptr = 0;
2805 else if (h == NULL || h->dynindx == -1)
2807 dyn_i->fptr_offset = x->ofs;
2808 x->ofs += 16;
2810 else
2811 dyn_i->want_fptr = 0;
2813 return TRUE;
2816 /* Allocate all the minimal PLT entries. */
2818 static bfd_boolean
2819 allocate_plt_entries (dyn_i, data)
2820 struct elfNN_ia64_dyn_sym_info *dyn_i;
2821 PTR data;
2823 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2825 if (dyn_i->want_plt)
2827 struct elf_link_hash_entry *h = dyn_i->h;
2829 if (h)
2830 while (h->root.type == bfd_link_hash_indirect
2831 || h->root.type == bfd_link_hash_warning)
2832 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2834 /* ??? Versioned symbols seem to lose NEEDS_PLT. */
2835 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
2837 bfd_size_type offset = x->ofs;
2838 if (offset == 0)
2839 offset = PLT_HEADER_SIZE;
2840 dyn_i->plt_offset = offset;
2841 x->ofs = offset + PLT_MIN_ENTRY_SIZE;
2843 dyn_i->want_pltoff = 1;
2845 else
2847 dyn_i->want_plt = 0;
2848 dyn_i->want_plt2 = 0;
2851 return TRUE;
2854 /* Allocate all the full PLT entries. */
2856 static bfd_boolean
2857 allocate_plt2_entries (dyn_i, data)
2858 struct elfNN_ia64_dyn_sym_info *dyn_i;
2859 PTR data;
2861 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2863 if (dyn_i->want_plt2)
2865 struct elf_link_hash_entry *h = dyn_i->h;
2866 bfd_size_type ofs = x->ofs;
2868 dyn_i->plt2_offset = ofs;
2869 x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
2871 while (h->root.type == bfd_link_hash_indirect
2872 || h->root.type == bfd_link_hash_warning)
2873 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2874 dyn_i->h->plt.offset = ofs;
2876 return TRUE;
2879 /* Allocate all the PLTOFF entries requested by relocations and
2880 plt entries. We can't share space with allocated FPTR entries,
2881 because the latter are not necessarily addressable by the GP.
2882 ??? Relaxation might be able to determine that they are. */
2884 static bfd_boolean
2885 allocate_pltoff_entries (dyn_i, data)
2886 struct elfNN_ia64_dyn_sym_info *dyn_i;
2887 PTR data;
2889 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2891 if (dyn_i->want_pltoff)
2893 dyn_i->pltoff_offset = x->ofs;
2894 x->ofs += 16;
2896 return TRUE;
2899 /* Allocate dynamic relocations for those symbols that turned out
2900 to be dynamic. */
2902 static bfd_boolean
2903 allocate_dynrel_entries (dyn_i, data)
2904 struct elfNN_ia64_dyn_sym_info *dyn_i;
2905 PTR data;
2907 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
2908 struct elfNN_ia64_link_hash_table *ia64_info;
2909 struct elfNN_ia64_dyn_reloc_entry *rent;
2910 bfd_boolean dynamic_symbol, shared, resolved_zero;
2912 ia64_info = elfNN_ia64_hash_table (x->info);
2914 /* Note that this can't be used in relation to FPTR relocs below. */
2915 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
2917 shared = x->info->shared;
2918 resolved_zero = (dyn_i->h
2919 && ELF_ST_VISIBILITY (dyn_i->h->other)
2920 && dyn_i->h->root.type == bfd_link_hash_undefweak);
2922 /* Take care of the GOT and PLT relocations. */
2924 if ((!resolved_zero
2925 && (dynamic_symbol || shared)
2926 && (dyn_i->want_got || dyn_i->want_gotx))
2927 || (dyn_i->want_ltoff_fptr
2928 && dyn_i->h
2929 && dyn_i->h->dynindx != -1))
2931 if (!dyn_i->want_ltoff_fptr
2932 || !x->info->pie
2933 || dyn_i->h == NULL
2934 || dyn_i->h->root.type != bfd_link_hash_undefweak)
2935 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2937 if ((dynamic_symbol || shared) && dyn_i->want_tprel)
2938 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2939 if (dynamic_symbol && dyn_i->want_dtpmod)
2940 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2941 if (dynamic_symbol && dyn_i->want_dtprel)
2942 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
2944 if (x->only_got)
2945 return TRUE;
2947 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
2949 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
2950 ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
2953 if (!resolved_zero && dyn_i->want_pltoff)
2955 bfd_size_type t = 0;
2957 /* Dynamic symbols get one IPLT relocation. Local symbols in
2958 shared libraries get two REL relocations. Local symbols in
2959 main applications get nothing. */
2960 if (dynamic_symbol)
2961 t = sizeof (ElfNN_External_Rela);
2962 else if (shared)
2963 t = 2 * sizeof (ElfNN_External_Rela);
2965 ia64_info->rel_pltoff_sec->size += t;
2968 /* Take care of the normal data relocations. */
2970 for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
2972 int count = rent->count;
2974 switch (rent->type)
2976 case R_IA64_FPTR32LSB:
2977 case R_IA64_FPTR64LSB:
2978 /* Allocate one iff !want_fptr and not PIE, which by this point
2979 will be true only if we're actually allocating one statically
2980 in the main executable. Position independent executables
2981 need a relative reloc. */
2982 if (dyn_i->want_fptr && !x->info->pie)
2983 continue;
2984 break;
2985 case R_IA64_PCREL32LSB:
2986 case R_IA64_PCREL64LSB:
2987 if (!dynamic_symbol)
2988 continue;
2989 break;
2990 case R_IA64_DIR32LSB:
2991 case R_IA64_DIR64LSB:
2992 if (!dynamic_symbol && !shared)
2993 continue;
2994 break;
2995 case R_IA64_IPLTLSB:
2996 if (!dynamic_symbol && !shared)
2997 continue;
2998 /* Use two REL relocations for IPLT relocations
2999 against local symbols. */
3000 if (!dynamic_symbol)
3001 count *= 2;
3002 break;
3003 case R_IA64_DTPREL32LSB:
3004 case R_IA64_TPREL64LSB:
3005 case R_IA64_DTPREL64LSB:
3006 case R_IA64_DTPMOD64LSB:
3007 break;
3008 default:
3009 abort ();
3011 if (rent->reltext)
3012 ia64_info->reltext = 1;
3013 rent->srel->size += sizeof (ElfNN_External_Rela) * count;
3016 return TRUE;
3019 static bfd_boolean
3020 elfNN_ia64_adjust_dynamic_symbol (info, h)
3021 struct bfd_link_info *info ATTRIBUTE_UNUSED;
3022 struct elf_link_hash_entry *h;
3024 /* ??? Undefined symbols with PLT entries should be re-defined
3025 to be the PLT entry. */
3027 /* If this is a weak symbol, and there is a real definition, the
3028 processor independent code will have arranged for us to see the
3029 real definition first, and we can just use the same value. */
3030 if (h->u.weakdef != NULL)
3032 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3033 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3034 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3035 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3036 return TRUE;
3039 /* If this is a reference to a symbol defined by a dynamic object which
3040 is not a function, we might allocate the symbol in our .dynbss section
3041 and allocate a COPY dynamic relocation.
3043 But IA-64 code is canonically PIC, so as a rule we can avoid this sort
3044 of hackery. */
3046 return TRUE;
3049 static bfd_boolean
3050 elfNN_ia64_size_dynamic_sections (output_bfd, info)
3051 bfd *output_bfd ATTRIBUTE_UNUSED;
3052 struct bfd_link_info *info;
3054 struct elfNN_ia64_allocate_data data;
3055 struct elfNN_ia64_link_hash_table *ia64_info;
3056 asection *sec;
3057 bfd *dynobj;
3058 bfd_boolean relplt = FALSE;
3060 dynobj = elf_hash_table(info)->dynobj;
3061 ia64_info = elfNN_ia64_hash_table (info);
3062 ia64_info->self_dtpmod_offset = (bfd_vma) -1;
3063 BFD_ASSERT(dynobj != NULL);
3064 data.info = info;
3066 /* Set the contents of the .interp section to the interpreter. */
3067 if (ia64_info->root.dynamic_sections_created
3068 && info->executable)
3070 sec = bfd_get_section_by_name (dynobj, ".interp");
3071 BFD_ASSERT (sec != NULL);
3072 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3073 sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
3076 /* Allocate the GOT entries. */
3078 if (ia64_info->got_sec)
3080 data.ofs = 0;
3081 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
3082 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
3083 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
3084 ia64_info->got_sec->size = data.ofs;
3087 /* Allocate the FPTR entries. */
3089 if (ia64_info->fptr_sec)
3091 data.ofs = 0;
3092 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
3093 ia64_info->fptr_sec->size = data.ofs;
3096 /* Now that we've seen all of the input files, we can decide which
3097 symbols need plt entries. Allocate the minimal PLT entries first.
3098 We do this even though dynamic_sections_created may be FALSE, because
3099 this has the side-effect of clearing want_plt and want_plt2. */
3101 data.ofs = 0;
3102 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
3104 ia64_info->minplt_entries = 0;
3105 if (data.ofs)
3107 ia64_info->minplt_entries
3108 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
3111 /* Align the pointer for the plt2 entries. */
3112 data.ofs = (data.ofs + 31) & (bfd_vma) -32;
3114 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
3115 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
3117 /* FIXME: we always reserve the memory for dynamic linker even if
3118 there are no PLT entries since dynamic linker may assume the
3119 reserved memory always exists. */
3121 BFD_ASSERT (ia64_info->root.dynamic_sections_created);
3123 ia64_info->plt_sec->size = data.ofs;
3125 /* If we've got a .plt, we need some extra memory for the dynamic
3126 linker. We stuff these in .got.plt. */
3127 sec = bfd_get_section_by_name (dynobj, ".got.plt");
3128 sec->size = 8 * PLT_RESERVED_WORDS;
3131 /* Allocate the PLTOFF entries. */
3133 if (ia64_info->pltoff_sec)
3135 data.ofs = 0;
3136 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
3137 ia64_info->pltoff_sec->size = data.ofs;
3140 if (ia64_info->root.dynamic_sections_created)
3142 /* Allocate space for the dynamic relocations that turned out to be
3143 required. */
3145 if (info->shared && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
3146 ia64_info->rel_got_sec->size += sizeof (ElfNN_External_Rela);
3147 data.only_got = FALSE;
3148 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
3151 /* We have now determined the sizes of the various dynamic sections.
3152 Allocate memory for them. */
3153 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
3155 bfd_boolean strip;
3157 if (!(sec->flags & SEC_LINKER_CREATED))
3158 continue;
3160 /* If we don't need this section, strip it from the output file.
3161 There were several sections primarily related to dynamic
3162 linking that must be create before the linker maps input
3163 sections to output sections. The linker does that before
3164 bfd_elf_size_dynamic_sections is called, and it is that
3165 function which decides whether anything needs to go into
3166 these sections. */
3168 strip = (sec->size == 0);
3170 if (sec == ia64_info->got_sec)
3171 strip = FALSE;
3172 else if (sec == ia64_info->rel_got_sec)
3174 if (strip)
3175 ia64_info->rel_got_sec = NULL;
3176 else
3177 /* We use the reloc_count field as a counter if we need to
3178 copy relocs into the output file. */
3179 sec->reloc_count = 0;
3181 else if (sec == ia64_info->fptr_sec)
3183 if (strip)
3184 ia64_info->fptr_sec = NULL;
3186 else if (sec == ia64_info->rel_fptr_sec)
3188 if (strip)
3189 ia64_info->rel_fptr_sec = NULL;
3190 else
3191 /* We use the reloc_count field as a counter if we need to
3192 copy relocs into the output file. */
3193 sec->reloc_count = 0;
3195 else if (sec == ia64_info->plt_sec)
3197 if (strip)
3198 ia64_info->plt_sec = NULL;
3200 else if (sec == ia64_info->pltoff_sec)
3202 if (strip)
3203 ia64_info->pltoff_sec = NULL;
3205 else if (sec == ia64_info->rel_pltoff_sec)
3207 if (strip)
3208 ia64_info->rel_pltoff_sec = NULL;
3209 else
3211 relplt = TRUE;
3212 /* We use the reloc_count field as a counter if we need to
3213 copy relocs into the output file. */
3214 sec->reloc_count = 0;
3217 else
3219 const char *name;
3221 /* It's OK to base decisions on the section name, because none
3222 of the dynobj section names depend upon the input files. */
3223 name = bfd_get_section_name (dynobj, sec);
3225 if (strcmp (name, ".got.plt") == 0)
3226 strip = FALSE;
3227 else if (strncmp (name, ".rel", 4) == 0)
3229 if (!strip)
3231 /* We use the reloc_count field as a counter if we need to
3232 copy relocs into the output file. */
3233 sec->reloc_count = 0;
3236 else
3237 continue;
3240 if (strip)
3241 sec->flags |= SEC_EXCLUDE;
3242 else
3244 /* Allocate memory for the section contents. */
3245 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
3246 if (sec->contents == NULL && sec->size != 0)
3247 return FALSE;
3251 if (elf_hash_table (info)->dynamic_sections_created)
3253 /* Add some entries to the .dynamic section. We fill in the values
3254 later (in finish_dynamic_sections) but we must add the entries now
3255 so that we get the correct size for the .dynamic section. */
3257 if (info->executable)
3259 /* The DT_DEBUG entry is filled in by the dynamic linker and used
3260 by the debugger. */
3261 #define add_dynamic_entry(TAG, VAL) \
3262 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3264 if (!add_dynamic_entry (DT_DEBUG, 0))
3265 return FALSE;
3268 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
3269 return FALSE;
3270 if (!add_dynamic_entry (DT_PLTGOT, 0))
3271 return FALSE;
3273 if (relplt)
3275 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3276 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3277 || !add_dynamic_entry (DT_JMPREL, 0))
3278 return FALSE;
3281 if (!add_dynamic_entry (DT_RELA, 0)
3282 || !add_dynamic_entry (DT_RELASZ, 0)
3283 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
3284 return FALSE;
3286 if (ia64_info->reltext)
3288 if (!add_dynamic_entry (DT_TEXTREL, 0))
3289 return FALSE;
3290 info->flags |= DF_TEXTREL;
3294 /* ??? Perhaps force __gp local. */
3296 return TRUE;
3299 static bfd_reloc_status_type
3300 elfNN_ia64_install_value (hit_addr, v, r_type)
3301 bfd_byte *hit_addr;
3302 bfd_vma v;
3303 unsigned int r_type;
3305 const struct ia64_operand *op;
3306 int bigendian = 0, shift = 0;
3307 bfd_vma t0, t1, dword;
3308 ia64_insn insn;
3309 enum ia64_opnd opnd;
3310 const char *err;
3311 size_t size = 8;
3312 #ifdef BFD_HOST_U_64_BIT
3313 BFD_HOST_U_64_BIT val = (BFD_HOST_U_64_BIT) v;
3314 #else
3315 bfd_vma val = v;
3316 #endif
3318 opnd = IA64_OPND_NIL;
3319 switch (r_type)
3321 case R_IA64_NONE:
3322 case R_IA64_LDXMOV:
3323 return bfd_reloc_ok;
3325 /* Instruction relocations. */
3327 case R_IA64_IMM14:
3328 case R_IA64_TPREL14:
3329 case R_IA64_DTPREL14:
3330 opnd = IA64_OPND_IMM14;
3331 break;
3333 case R_IA64_PCREL21F: opnd = IA64_OPND_TGT25; break;
3334 case R_IA64_PCREL21M: opnd = IA64_OPND_TGT25b; break;
3335 case R_IA64_PCREL60B: opnd = IA64_OPND_TGT64; break;
3336 case R_IA64_PCREL21B:
3337 case R_IA64_PCREL21BI:
3338 opnd = IA64_OPND_TGT25c;
3339 break;
3341 case R_IA64_IMM22:
3342 case R_IA64_GPREL22:
3343 case R_IA64_LTOFF22:
3344 case R_IA64_LTOFF22X:
3345 case R_IA64_PLTOFF22:
3346 case R_IA64_PCREL22:
3347 case R_IA64_LTOFF_FPTR22:
3348 case R_IA64_TPREL22:
3349 case R_IA64_DTPREL22:
3350 case R_IA64_LTOFF_TPREL22:
3351 case R_IA64_LTOFF_DTPMOD22:
3352 case R_IA64_LTOFF_DTPREL22:
3353 opnd = IA64_OPND_IMM22;
3354 break;
3356 case R_IA64_IMM64:
3357 case R_IA64_GPREL64I:
3358 case R_IA64_LTOFF64I:
3359 case R_IA64_PLTOFF64I:
3360 case R_IA64_PCREL64I:
3361 case R_IA64_FPTR64I:
3362 case R_IA64_LTOFF_FPTR64I:
3363 case R_IA64_TPREL64I:
3364 case R_IA64_DTPREL64I:
3365 opnd = IA64_OPND_IMMU64;
3366 break;
3368 /* Data relocations. */
3370 case R_IA64_DIR32MSB:
3371 case R_IA64_GPREL32MSB:
3372 case R_IA64_FPTR32MSB:
3373 case R_IA64_PCREL32MSB:
3374 case R_IA64_LTOFF_FPTR32MSB:
3375 case R_IA64_SEGREL32MSB:
3376 case R_IA64_SECREL32MSB:
3377 case R_IA64_LTV32MSB:
3378 case R_IA64_DTPREL32MSB:
3379 size = 4; bigendian = 1;
3380 break;
3382 case R_IA64_DIR32LSB:
3383 case R_IA64_GPREL32LSB:
3384 case R_IA64_FPTR32LSB:
3385 case R_IA64_PCREL32LSB:
3386 case R_IA64_LTOFF_FPTR32LSB:
3387 case R_IA64_SEGREL32LSB:
3388 case R_IA64_SECREL32LSB:
3389 case R_IA64_LTV32LSB:
3390 case R_IA64_DTPREL32LSB:
3391 size = 4; bigendian = 0;
3392 break;
3394 case R_IA64_DIR64MSB:
3395 case R_IA64_GPREL64MSB:
3396 case R_IA64_PLTOFF64MSB:
3397 case R_IA64_FPTR64MSB:
3398 case R_IA64_PCREL64MSB:
3399 case R_IA64_LTOFF_FPTR64MSB:
3400 case R_IA64_SEGREL64MSB:
3401 case R_IA64_SECREL64MSB:
3402 case R_IA64_LTV64MSB:
3403 case R_IA64_TPREL64MSB:
3404 case R_IA64_DTPMOD64MSB:
3405 case R_IA64_DTPREL64MSB:
3406 size = 8; bigendian = 1;
3407 break;
3409 case R_IA64_DIR64LSB:
3410 case R_IA64_GPREL64LSB:
3411 case R_IA64_PLTOFF64LSB:
3412 case R_IA64_FPTR64LSB:
3413 case R_IA64_PCREL64LSB:
3414 case R_IA64_LTOFF_FPTR64LSB:
3415 case R_IA64_SEGREL64LSB:
3416 case R_IA64_SECREL64LSB:
3417 case R_IA64_LTV64LSB:
3418 case R_IA64_TPREL64LSB:
3419 case R_IA64_DTPMOD64LSB:
3420 case R_IA64_DTPREL64LSB:
3421 size = 8; bigendian = 0;
3422 break;
3424 /* Unsupported / Dynamic relocations. */
3425 default:
3426 return bfd_reloc_notsupported;
3429 switch (opnd)
3431 case IA64_OPND_IMMU64:
3432 hit_addr -= (long) hit_addr & 0x3;
3433 t0 = bfd_getl64 (hit_addr);
3434 t1 = bfd_getl64 (hit_addr + 8);
3436 /* tmpl/s: bits 0.. 5 in t0
3437 slot 0: bits 5..45 in t0
3438 slot 1: bits 46..63 in t0, bits 0..22 in t1
3439 slot 2: bits 23..63 in t1 */
3441 /* First, clear the bits that form the 64 bit constant. */
3442 t0 &= ~(0x3ffffLL << 46);
3443 t1 &= ~(0x7fffffLL
3444 | (( (0x07fLL << 13) | (0x1ffLL << 27)
3445 | (0x01fLL << 22) | (0x001LL << 21)
3446 | (0x001LL << 36)) << 23));
3448 t0 |= ((val >> 22) & 0x03ffffLL) << 46; /* 18 lsbs of imm41 */
3449 t1 |= ((val >> 40) & 0x7fffffLL) << 0; /* 23 msbs of imm41 */
3450 t1 |= ( (((val >> 0) & 0x07f) << 13) /* imm7b */
3451 | (((val >> 7) & 0x1ff) << 27) /* imm9d */
3452 | (((val >> 16) & 0x01f) << 22) /* imm5c */
3453 | (((val >> 21) & 0x001) << 21) /* ic */
3454 | (((val >> 63) & 0x001) << 36)) << 23; /* i */
3456 bfd_putl64 (t0, hit_addr);
3457 bfd_putl64 (t1, hit_addr + 8);
3458 break;
3460 case IA64_OPND_TGT64:
3461 hit_addr -= (long) hit_addr & 0x3;
3462 t0 = bfd_getl64 (hit_addr);
3463 t1 = bfd_getl64 (hit_addr + 8);
3465 /* tmpl/s: bits 0.. 5 in t0
3466 slot 0: bits 5..45 in t0
3467 slot 1: bits 46..63 in t0, bits 0..22 in t1
3468 slot 2: bits 23..63 in t1 */
3470 /* First, clear the bits that form the 64 bit constant. */
3471 t0 &= ~(0x3ffffLL << 46);
3472 t1 &= ~(0x7fffffLL
3473 | ((1LL << 36 | 0xfffffLL << 13) << 23));
3475 val >>= 4;
3476 t0 |= ((val >> 20) & 0xffffLL) << 2 << 46; /* 16 lsbs of imm39 */
3477 t1 |= ((val >> 36) & 0x7fffffLL) << 0; /* 23 msbs of imm39 */
3478 t1 |= ((((val >> 0) & 0xfffffLL) << 13) /* imm20b */
3479 | (((val >> 59) & 0x1LL) << 36)) << 23; /* i */
3481 bfd_putl64 (t0, hit_addr);
3482 bfd_putl64 (t1, hit_addr + 8);
3483 break;
3485 default:
3486 switch ((long) hit_addr & 0x3)
3488 case 0: shift = 5; break;
3489 case 1: shift = 14; hit_addr += 3; break;
3490 case 2: shift = 23; hit_addr += 6; break;
3491 case 3: return bfd_reloc_notsupported; /* shouldn't happen... */
3493 dword = bfd_getl64 (hit_addr);
3494 insn = (dword >> shift) & 0x1ffffffffffLL;
3496 op = elf64_ia64_operands + opnd;
3497 err = (*op->insert) (op, val, &insn);
3498 if (err)
3499 return bfd_reloc_overflow;
3501 dword &= ~(0x1ffffffffffLL << shift);
3502 dword |= (insn << shift);
3503 bfd_putl64 (dword, hit_addr);
3504 break;
3506 case IA64_OPND_NIL:
3507 /* A data relocation. */
3508 if (bigendian)
3509 if (size == 4)
3510 bfd_putb32 (val, hit_addr);
3511 else
3512 bfd_putb64 (val, hit_addr);
3513 else
3514 if (size == 4)
3515 bfd_putl32 (val, hit_addr);
3516 else
3517 bfd_putl64 (val, hit_addr);
3518 break;
3521 return bfd_reloc_ok;
3524 static void
3525 elfNN_ia64_install_dyn_reloc (abfd, info, sec, srel, offset, type,
3526 dynindx, addend)
3527 bfd *abfd;
3528 struct bfd_link_info *info;
3529 asection *sec;
3530 asection *srel;
3531 bfd_vma offset;
3532 unsigned int type;
3533 long dynindx;
3534 bfd_vma addend;
3536 Elf_Internal_Rela outrel;
3537 bfd_byte *loc;
3539 BFD_ASSERT (dynindx != -1);
3540 outrel.r_info = ELFNN_R_INFO (dynindx, type);
3541 outrel.r_addend = addend;
3542 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
3543 if (outrel.r_offset >= (bfd_vma) -2)
3545 /* Run for the hills. We shouldn't be outputting a relocation
3546 for this. So do what everyone else does and output a no-op. */
3547 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
3548 outrel.r_addend = 0;
3549 outrel.r_offset = 0;
3551 else
3552 outrel.r_offset += sec->output_section->vma + sec->output_offset;
3554 loc = srel->contents;
3555 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
3556 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3557 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
3560 /* Store an entry for target address TARGET_ADDR in the linkage table
3561 and return the gp-relative address of the linkage table entry. */
3563 static bfd_vma
3564 set_got_entry (abfd, info, dyn_i, dynindx, addend, value, dyn_r_type)
3565 bfd *abfd;
3566 struct bfd_link_info *info;
3567 struct elfNN_ia64_dyn_sym_info *dyn_i;
3568 long dynindx;
3569 bfd_vma addend;
3570 bfd_vma value;
3571 unsigned int dyn_r_type;
3573 struct elfNN_ia64_link_hash_table *ia64_info;
3574 asection *got_sec;
3575 bfd_boolean done;
3576 bfd_vma got_offset;
3578 ia64_info = elfNN_ia64_hash_table (info);
3579 got_sec = ia64_info->got_sec;
3581 switch (dyn_r_type)
3583 case R_IA64_TPREL64LSB:
3584 done = dyn_i->tprel_done;
3585 dyn_i->tprel_done = TRUE;
3586 got_offset = dyn_i->tprel_offset;
3587 break;
3588 case R_IA64_DTPMOD64LSB:
3589 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
3591 done = dyn_i->dtpmod_done;
3592 dyn_i->dtpmod_done = TRUE;
3594 else
3596 done = ia64_info->self_dtpmod_done;
3597 ia64_info->self_dtpmod_done = TRUE;
3598 dynindx = 0;
3600 got_offset = dyn_i->dtpmod_offset;
3601 break;
3602 case R_IA64_DTPREL32LSB:
3603 case R_IA64_DTPREL64LSB:
3604 done = dyn_i->dtprel_done;
3605 dyn_i->dtprel_done = TRUE;
3606 got_offset = dyn_i->dtprel_offset;
3607 break;
3608 default:
3609 done = dyn_i->got_done;
3610 dyn_i->got_done = TRUE;
3611 got_offset = dyn_i->got_offset;
3612 break;
3615 BFD_ASSERT ((got_offset & 7) == 0);
3617 if (! done)
3619 /* Store the target address in the linkage table entry. */
3620 bfd_put_64 (abfd, value, got_sec->contents + got_offset);
3622 /* Install a dynamic relocation if needed. */
3623 if (((info->shared
3624 && (!dyn_i->h
3625 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3626 || dyn_i->h->root.type != bfd_link_hash_undefweak)
3627 && dyn_r_type != R_IA64_DTPREL32LSB
3628 && dyn_r_type != R_IA64_DTPREL64LSB)
3629 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
3630 || (dynindx != -1
3631 && (dyn_r_type == R_IA64_FPTR32LSB
3632 || dyn_r_type == R_IA64_FPTR64LSB)))
3633 && (!dyn_i->want_ltoff_fptr
3634 || !info->pie
3635 || !dyn_i->h
3636 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3638 if (dynindx == -1
3639 && dyn_r_type != R_IA64_TPREL64LSB
3640 && dyn_r_type != R_IA64_DTPMOD64LSB
3641 && dyn_r_type != R_IA64_DTPREL32LSB
3642 && dyn_r_type != R_IA64_DTPREL64LSB)
3644 dyn_r_type = R_IA64_RELNNLSB;
3645 dynindx = 0;
3646 addend = value;
3649 if (bfd_big_endian (abfd))
3651 switch (dyn_r_type)
3653 case R_IA64_REL32LSB:
3654 dyn_r_type = R_IA64_REL32MSB;
3655 break;
3656 case R_IA64_DIR32LSB:
3657 dyn_r_type = R_IA64_DIR32MSB;
3658 break;
3659 case R_IA64_FPTR32LSB:
3660 dyn_r_type = R_IA64_FPTR32MSB;
3661 break;
3662 case R_IA64_DTPREL32LSB:
3663 dyn_r_type = R_IA64_DTPREL32MSB;
3664 break;
3665 case R_IA64_REL64LSB:
3666 dyn_r_type = R_IA64_REL64MSB;
3667 break;
3668 case R_IA64_DIR64LSB:
3669 dyn_r_type = R_IA64_DIR64MSB;
3670 break;
3671 case R_IA64_FPTR64LSB:
3672 dyn_r_type = R_IA64_FPTR64MSB;
3673 break;
3674 case R_IA64_TPREL64LSB:
3675 dyn_r_type = R_IA64_TPREL64MSB;
3676 break;
3677 case R_IA64_DTPMOD64LSB:
3678 dyn_r_type = R_IA64_DTPMOD64MSB;
3679 break;
3680 case R_IA64_DTPREL64LSB:
3681 dyn_r_type = R_IA64_DTPREL64MSB;
3682 break;
3683 default:
3684 BFD_ASSERT (FALSE);
3685 break;
3689 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
3690 ia64_info->rel_got_sec,
3691 got_offset, dyn_r_type,
3692 dynindx, addend);
3696 /* Return the address of the linkage table entry. */
3697 value = (got_sec->output_section->vma
3698 + got_sec->output_offset
3699 + got_offset);
3701 return value;
3704 /* Fill in a function descriptor consisting of the function's code
3705 address and its global pointer. Return the descriptor's address. */
3707 static bfd_vma
3708 set_fptr_entry (abfd, info, dyn_i, value)
3709 bfd *abfd;
3710 struct bfd_link_info *info;
3711 struct elfNN_ia64_dyn_sym_info *dyn_i;
3712 bfd_vma value;
3714 struct elfNN_ia64_link_hash_table *ia64_info;
3715 asection *fptr_sec;
3717 ia64_info = elfNN_ia64_hash_table (info);
3718 fptr_sec = ia64_info->fptr_sec;
3720 if (!dyn_i->fptr_done)
3722 dyn_i->fptr_done = 1;
3724 /* Fill in the function descriptor. */
3725 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
3726 bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
3727 fptr_sec->contents + dyn_i->fptr_offset + 8);
3728 if (ia64_info->rel_fptr_sec)
3730 Elf_Internal_Rela outrel;
3731 bfd_byte *loc;
3733 if (bfd_little_endian (abfd))
3734 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
3735 else
3736 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
3737 outrel.r_addend = value;
3738 outrel.r_offset = (fptr_sec->output_section->vma
3739 + fptr_sec->output_offset
3740 + dyn_i->fptr_offset);
3741 loc = ia64_info->rel_fptr_sec->contents;
3742 loc += ia64_info->rel_fptr_sec->reloc_count++
3743 * sizeof (ElfNN_External_Rela);
3744 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
3748 /* Return the descriptor's address. */
3749 value = (fptr_sec->output_section->vma
3750 + fptr_sec->output_offset
3751 + dyn_i->fptr_offset);
3753 return value;
3756 /* Fill in a PLTOFF entry consisting of the function's code address
3757 and its global pointer. Return the descriptor's address. */
3759 static bfd_vma
3760 set_pltoff_entry (abfd, info, dyn_i, value, is_plt)
3761 bfd *abfd;
3762 struct bfd_link_info *info;
3763 struct elfNN_ia64_dyn_sym_info *dyn_i;
3764 bfd_vma value;
3765 bfd_boolean is_plt;
3767 struct elfNN_ia64_link_hash_table *ia64_info;
3768 asection *pltoff_sec;
3770 ia64_info = elfNN_ia64_hash_table (info);
3771 pltoff_sec = ia64_info->pltoff_sec;
3773 /* Don't do anything if this symbol uses a real PLT entry. In
3774 that case, we'll fill this in during finish_dynamic_symbol. */
3775 if ((! dyn_i->want_plt || is_plt)
3776 && !dyn_i->pltoff_done)
3778 bfd_vma gp = _bfd_get_gp_value (abfd);
3780 /* Fill in the function descriptor. */
3781 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
3782 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
3784 /* Install dynamic relocations if needed. */
3785 if (!is_plt
3786 && info->shared
3787 && (!dyn_i->h
3788 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
3789 || dyn_i->h->root.type != bfd_link_hash_undefweak))
3791 unsigned int dyn_r_type;
3793 if (bfd_big_endian (abfd))
3794 dyn_r_type = R_IA64_RELNNMSB;
3795 else
3796 dyn_r_type = R_IA64_RELNNLSB;
3798 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3799 ia64_info->rel_pltoff_sec,
3800 dyn_i->pltoff_offset,
3801 dyn_r_type, 0, value);
3802 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
3803 ia64_info->rel_pltoff_sec,
3804 dyn_i->pltoff_offset + ARCH_SIZE / 8,
3805 dyn_r_type, 0, gp);
3808 dyn_i->pltoff_done = 1;
3811 /* Return the descriptor's address. */
3812 value = (pltoff_sec->output_section->vma
3813 + pltoff_sec->output_offset
3814 + dyn_i->pltoff_offset);
3816 return value;
3819 /* Return the base VMA address which should be subtracted from real addresses
3820 when resolving @tprel() relocation.
3821 Main program TLS (whose template starts at PT_TLS p_vaddr)
3822 is assigned offset round(2 * size of pointer, PT_TLS p_align). */
3824 static bfd_vma
3825 elfNN_ia64_tprel_base (info)
3826 struct bfd_link_info *info;
3828 asection *tls_sec = elf_hash_table (info)->tls_sec;
3830 BFD_ASSERT (tls_sec != NULL);
3831 return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
3832 tls_sec->alignment_power);
3835 /* Return the base VMA address which should be subtracted from real addresses
3836 when resolving @dtprel() relocation.
3837 This is PT_TLS segment p_vaddr. */
3839 static bfd_vma
3840 elfNN_ia64_dtprel_base (info)
3841 struct bfd_link_info *info;
3843 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
3844 return elf_hash_table (info)->tls_sec->vma;
3847 /* Called through qsort to sort the .IA_64.unwind section during a
3848 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
3849 to the output bfd so we can do proper endianness frobbing. */
3851 static bfd *elfNN_ia64_unwind_entry_compare_bfd;
3853 static int
3854 elfNN_ia64_unwind_entry_compare (a, b)
3855 const PTR a;
3856 const PTR b;
3858 bfd_vma av, bv;
3860 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
3861 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
3863 return (av < bv ? -1 : av > bv ? 1 : 0);
3866 /* Make sure we've got ourselves a nice fat __gp value. */
3867 static bfd_boolean
3868 elfNN_ia64_choose_gp (abfd, info)
3869 bfd *abfd;
3870 struct bfd_link_info *info;
3872 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
3873 bfd_vma min_short_vma = min_vma, max_short_vma = 0;
3874 struct elf_link_hash_entry *gp;
3875 bfd_vma gp_val;
3876 asection *os;
3877 struct elfNN_ia64_link_hash_table *ia64_info;
3879 ia64_info = elfNN_ia64_hash_table (info);
3881 /* Find the min and max vma of all sections marked short. Also collect
3882 min and max vma of any type, for use in selecting a nice gp. */
3883 for (os = abfd->sections; os ; os = os->next)
3885 bfd_vma lo, hi;
3887 if ((os->flags & SEC_ALLOC) == 0)
3888 continue;
3890 lo = os->vma;
3891 hi = os->vma + os->size;
3892 if (hi < lo)
3893 hi = (bfd_vma) -1;
3895 if (min_vma > lo)
3896 min_vma = lo;
3897 if (max_vma < hi)
3898 max_vma = hi;
3899 if (os->flags & SEC_SMALL_DATA)
3901 if (min_short_vma > lo)
3902 min_short_vma = lo;
3903 if (max_short_vma < hi)
3904 max_short_vma = hi;
3908 /* See if the user wants to force a value. */
3909 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
3910 FALSE, FALSE);
3912 if (gp
3913 && (gp->root.type == bfd_link_hash_defined
3914 || gp->root.type == bfd_link_hash_defweak))
3916 asection *gp_sec = gp->root.u.def.section;
3917 gp_val = (gp->root.u.def.value
3918 + gp_sec->output_section->vma
3919 + gp_sec->output_offset);
3921 else
3923 /* Pick a sensible value. */
3925 asection *got_sec = ia64_info->got_sec;
3927 /* Start with just the address of the .got. */
3928 if (got_sec)
3929 gp_val = got_sec->output_section->vma;
3930 else if (max_short_vma != 0)
3931 gp_val = min_short_vma;
3932 else if (max_vma - min_vma < 0x200000)
3933 gp_val = min_vma;
3934 else
3935 gp_val = max_vma - 0x200000 + 8;
3937 /* If it is possible to address the entire image, but we
3938 don't with the choice above, adjust. */
3939 if (max_vma - min_vma < 0x400000
3940 && (max_vma - gp_val >= 0x200000
3941 || gp_val - min_vma > 0x200000))
3942 gp_val = min_vma + 0x200000;
3943 else if (max_short_vma != 0)
3945 /* If we don't cover all the short data, adjust. */
3946 if (max_short_vma - gp_val >= 0x200000)
3947 gp_val = min_short_vma + 0x200000;
3949 /* If we're addressing stuff past the end, adjust back. */
3950 if (gp_val > max_vma)
3951 gp_val = max_vma - 0x200000 + 8;
3955 /* Validate whether all SHF_IA_64_SHORT sections are within
3956 range of the chosen GP. */
3958 if (max_short_vma != 0)
3960 if (max_short_vma - min_short_vma >= 0x400000)
3962 (*_bfd_error_handler)
3963 (_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
3964 bfd_get_filename (abfd),
3965 (unsigned long) (max_short_vma - min_short_vma));
3966 return FALSE;
3968 else if ((gp_val > min_short_vma
3969 && gp_val - min_short_vma > 0x200000)
3970 || (gp_val < max_short_vma
3971 && max_short_vma - gp_val >= 0x200000))
3973 (*_bfd_error_handler)
3974 (_("%s: __gp does not cover short data segment"),
3975 bfd_get_filename (abfd));
3976 return FALSE;
3980 _bfd_set_gp_value (abfd, gp_val);
3982 return TRUE;
3985 static bfd_boolean
3986 elfNN_ia64_final_link (abfd, info)
3987 bfd *abfd;
3988 struct bfd_link_info *info;
3990 struct elfNN_ia64_link_hash_table *ia64_info;
3991 asection *unwind_output_sec;
3993 ia64_info = elfNN_ia64_hash_table (info);
3995 /* Make sure we've got ourselves a nice fat __gp value. */
3996 if (!info->relocatable)
3998 bfd_vma gp_val;
3999 struct elf_link_hash_entry *gp;
4001 /* We assume after gp is set, section size will only decrease. We
4002 need to adjust gp for it. */
4003 _bfd_set_gp_value (abfd, 0);
4004 if (! elfNN_ia64_choose_gp (abfd, info))
4005 return FALSE;
4006 gp_val = _bfd_get_gp_value (abfd);
4008 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
4009 FALSE, FALSE);
4010 if (gp)
4012 gp->root.type = bfd_link_hash_defined;
4013 gp->root.u.def.value = gp_val;
4014 gp->root.u.def.section = bfd_abs_section_ptr;
4018 /* If we're producing a final executable, we need to sort the contents
4019 of the .IA_64.unwind section. Force this section to be relocated
4020 into memory rather than written immediately to the output file. */
4021 unwind_output_sec = NULL;
4022 if (!info->relocatable)
4024 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
4025 if (s)
4027 unwind_output_sec = s->output_section;
4028 unwind_output_sec->contents
4029 = bfd_malloc (unwind_output_sec->size);
4030 if (unwind_output_sec->contents == NULL)
4031 return FALSE;
4035 /* Invoke the regular ELF backend linker to do all the work. */
4036 if (!bfd_elf_final_link (abfd, info))
4037 return FALSE;
4039 if (unwind_output_sec)
4041 elfNN_ia64_unwind_entry_compare_bfd = abfd;
4042 qsort (unwind_output_sec->contents,
4043 (size_t) (unwind_output_sec->size / 24),
4045 elfNN_ia64_unwind_entry_compare);
4047 if (! bfd_set_section_contents (abfd, unwind_output_sec,
4048 unwind_output_sec->contents, (bfd_vma) 0,
4049 unwind_output_sec->size))
4050 return FALSE;
4053 return TRUE;
4056 static bfd_boolean
4057 elfNN_ia64_relocate_section (output_bfd, info, input_bfd, input_section,
4058 contents, relocs, local_syms, local_sections)
4059 bfd *output_bfd;
4060 struct bfd_link_info *info;
4061 bfd *input_bfd;
4062 asection *input_section;
4063 bfd_byte *contents;
4064 Elf_Internal_Rela *relocs;
4065 Elf_Internal_Sym *local_syms;
4066 asection **local_sections;
4068 struct elfNN_ia64_link_hash_table *ia64_info;
4069 Elf_Internal_Shdr *symtab_hdr;
4070 Elf_Internal_Rela *rel;
4071 Elf_Internal_Rela *relend;
4072 asection *srel;
4073 bfd_boolean ret_val = TRUE; /* for non-fatal errors */
4074 bfd_vma gp_val;
4076 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4077 ia64_info = elfNN_ia64_hash_table (info);
4079 /* Infect various flags from the input section to the output section. */
4080 if (info->relocatable)
4082 bfd_vma flags;
4084 flags = elf_section_data(input_section)->this_hdr.sh_flags;
4085 flags &= SHF_IA_64_NORECOV;
4087 elf_section_data(input_section->output_section)
4088 ->this_hdr.sh_flags |= flags;
4089 return TRUE;
4092 gp_val = _bfd_get_gp_value (output_bfd);
4093 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
4095 rel = relocs;
4096 relend = relocs + input_section->reloc_count;
4097 for (; rel < relend; ++rel)
4099 struct elf_link_hash_entry *h;
4100 struct elfNN_ia64_dyn_sym_info *dyn_i;
4101 bfd_reloc_status_type r;
4102 reloc_howto_type *howto;
4103 unsigned long r_symndx;
4104 Elf_Internal_Sym *sym;
4105 unsigned int r_type;
4106 bfd_vma value;
4107 asection *sym_sec;
4108 bfd_byte *hit_addr;
4109 bfd_boolean dynamic_symbol_p;
4110 bfd_boolean undef_weak_ref;
4112 r_type = ELFNN_R_TYPE (rel->r_info);
4113 if (r_type > R_IA64_MAX_RELOC_CODE)
4115 (*_bfd_error_handler)
4116 (_("%B: unknown relocation type %d"),
4117 input_bfd, (int) r_type);
4118 bfd_set_error (bfd_error_bad_value);
4119 ret_val = FALSE;
4120 continue;
4123 howto = lookup_howto (r_type);
4124 r_symndx = ELFNN_R_SYM (rel->r_info);
4125 h = NULL;
4126 sym = NULL;
4127 sym_sec = NULL;
4128 undef_weak_ref = FALSE;
4130 if (r_symndx < symtab_hdr->sh_info)
4132 /* Reloc against local symbol. */
4133 asection *msec;
4134 sym = local_syms + r_symndx;
4135 sym_sec = local_sections[r_symndx];
4136 msec = sym_sec;
4137 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
4138 if ((sym_sec->flags & SEC_MERGE)
4139 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
4140 && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE)
4142 struct elfNN_ia64_local_hash_entry *loc_h;
4144 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
4145 if (loc_h && ! loc_h->sec_merge_done)
4147 struct elfNN_ia64_dyn_sym_info *dynent;
4149 for (dynent = loc_h->info; dynent; dynent = dynent->next)
4151 msec = sym_sec;
4152 dynent->addend =
4153 _bfd_merged_section_offset (output_bfd, &msec,
4154 elf_section_data (msec)->
4155 sec_info,
4156 sym->st_value
4157 + dynent->addend);
4158 dynent->addend -= sym->st_value;
4159 dynent->addend += msec->output_section->vma
4160 + msec->output_offset
4161 - sym_sec->output_section->vma
4162 - sym_sec->output_offset;
4164 loc_h->sec_merge_done = 1;
4168 else
4170 bfd_boolean unresolved_reloc;
4171 bfd_boolean warned;
4172 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
4174 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4175 r_symndx, symtab_hdr, sym_hashes,
4176 h, sym_sec, value,
4177 unresolved_reloc, warned);
4179 if (h->root.type == bfd_link_hash_undefweak)
4180 undef_weak_ref = TRUE;
4181 else if (warned)
4182 continue;
4185 hit_addr = contents + rel->r_offset;
4186 value += rel->r_addend;
4187 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
4189 switch (r_type)
4191 case R_IA64_NONE:
4192 case R_IA64_LDXMOV:
4193 continue;
4195 case R_IA64_IMM14:
4196 case R_IA64_IMM22:
4197 case R_IA64_IMM64:
4198 case R_IA64_DIR32MSB:
4199 case R_IA64_DIR32LSB:
4200 case R_IA64_DIR64MSB:
4201 case R_IA64_DIR64LSB:
4202 /* Install a dynamic relocation for this reloc. */
4203 if ((dynamic_symbol_p || info->shared)
4204 && r_symndx != 0
4205 && (input_section->flags & SEC_ALLOC) != 0)
4207 unsigned int dyn_r_type;
4208 long dynindx;
4209 bfd_vma addend;
4211 BFD_ASSERT (srel != NULL);
4213 switch (r_type)
4215 case R_IA64_IMM14:
4216 case R_IA64_IMM22:
4217 case R_IA64_IMM64:
4218 /* ??? People shouldn't be doing non-pic code in
4219 shared libraries nor dynamic executables. */
4220 (*_bfd_error_handler)
4221 (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
4222 input_bfd,
4223 h ? h->root.root.string
4224 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4225 sym_sec));
4226 ret_val = FALSE;
4227 continue;
4229 default:
4230 break;
4233 /* If we don't need dynamic symbol lookup, find a
4234 matching RELATIVE relocation. */
4235 dyn_r_type = r_type;
4236 if (dynamic_symbol_p)
4238 dynindx = h->dynindx;
4239 addend = rel->r_addend;
4240 value = 0;
4242 else
4244 switch (r_type)
4246 case R_IA64_DIR32MSB:
4247 dyn_r_type = R_IA64_REL32MSB;
4248 break;
4249 case R_IA64_DIR32LSB:
4250 dyn_r_type = R_IA64_REL32LSB;
4251 break;
4252 case R_IA64_DIR64MSB:
4253 dyn_r_type = R_IA64_REL64MSB;
4254 break;
4255 case R_IA64_DIR64LSB:
4256 dyn_r_type = R_IA64_REL64LSB;
4257 break;
4259 default:
4260 break;
4262 dynindx = 0;
4263 addend = value;
4266 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4267 srel, rel->r_offset, dyn_r_type,
4268 dynindx, addend);
4270 /* Fall through. */
4272 case R_IA64_LTV32MSB:
4273 case R_IA64_LTV32LSB:
4274 case R_IA64_LTV64MSB:
4275 case R_IA64_LTV64LSB:
4276 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4277 break;
4279 case R_IA64_GPREL22:
4280 case R_IA64_GPREL64I:
4281 case R_IA64_GPREL32MSB:
4282 case R_IA64_GPREL32LSB:
4283 case R_IA64_GPREL64MSB:
4284 case R_IA64_GPREL64LSB:
4285 if (dynamic_symbol_p)
4287 (*_bfd_error_handler)
4288 (_("%B: @gprel relocation against dynamic symbol %s"),
4289 input_bfd,
4290 h ? h->root.root.string
4291 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4292 sym_sec));
4293 ret_val = FALSE;
4294 continue;
4296 value -= gp_val;
4297 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4298 break;
4300 case R_IA64_LTOFF22:
4301 case R_IA64_LTOFF22X:
4302 case R_IA64_LTOFF64I:
4303 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4304 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
4305 rel->r_addend, value, R_IA64_DIRNNLSB);
4306 value -= gp_val;
4307 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4308 break;
4310 case R_IA64_PLTOFF22:
4311 case R_IA64_PLTOFF64I:
4312 case R_IA64_PLTOFF64MSB:
4313 case R_IA64_PLTOFF64LSB:
4314 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4315 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
4316 value -= gp_val;
4317 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4318 break;
4320 case R_IA64_FPTR64I:
4321 case R_IA64_FPTR32MSB:
4322 case R_IA64_FPTR32LSB:
4323 case R_IA64_FPTR64MSB:
4324 case R_IA64_FPTR64LSB:
4325 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4326 if (dyn_i->want_fptr)
4328 if (!undef_weak_ref)
4329 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4331 if (!dyn_i->want_fptr || info->pie)
4333 long dynindx;
4334 unsigned int dyn_r_type = r_type;
4335 bfd_vma addend = rel->r_addend;
4337 /* Otherwise, we expect the dynamic linker to create
4338 the entry. */
4340 if (dyn_i->want_fptr)
4342 if (r_type == R_IA64_FPTR64I)
4344 /* We can't represent this without a dynamic symbol.
4345 Adjust the relocation to be against an output
4346 section symbol, which are always present in the
4347 dynamic symbol table. */
4348 /* ??? People shouldn't be doing non-pic code in
4349 shared libraries. Hork. */
4350 (*_bfd_error_handler)
4351 (_("%B: linking non-pic code in a position independent executable"),
4352 input_bfd);
4353 ret_val = FALSE;
4354 continue;
4356 dynindx = 0;
4357 addend = value;
4358 dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
4360 else if (h)
4362 if (h->dynindx != -1)
4363 dynindx = h->dynindx;
4364 else
4365 dynindx = (_bfd_elf_link_lookup_local_dynindx
4366 (info, h->root.u.def.section->owner,
4367 global_sym_index (h)));
4368 value = 0;
4370 else
4372 dynindx = (_bfd_elf_link_lookup_local_dynindx
4373 (info, input_bfd, (long) r_symndx));
4374 value = 0;
4377 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4378 srel, rel->r_offset, dyn_r_type,
4379 dynindx, addend);
4382 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4383 break;
4385 case R_IA64_LTOFF_FPTR22:
4386 case R_IA64_LTOFF_FPTR64I:
4387 case R_IA64_LTOFF_FPTR32MSB:
4388 case R_IA64_LTOFF_FPTR32LSB:
4389 case R_IA64_LTOFF_FPTR64MSB:
4390 case R_IA64_LTOFF_FPTR64LSB:
4392 long dynindx;
4394 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4395 if (dyn_i->want_fptr)
4397 BFD_ASSERT (h == NULL || h->dynindx == -1);
4398 if (!undef_weak_ref)
4399 value = set_fptr_entry (output_bfd, info, dyn_i, value);
4400 dynindx = -1;
4402 else
4404 /* Otherwise, we expect the dynamic linker to create
4405 the entry. */
4406 if (h)
4408 if (h->dynindx != -1)
4409 dynindx = h->dynindx;
4410 else
4411 dynindx = (_bfd_elf_link_lookup_local_dynindx
4412 (info, h->root.u.def.section->owner,
4413 global_sym_index (h)));
4415 else
4416 dynindx = (_bfd_elf_link_lookup_local_dynindx
4417 (info, input_bfd, (long) r_symndx));
4418 value = 0;
4421 value = set_got_entry (output_bfd, info, dyn_i, dynindx,
4422 rel->r_addend, value, R_IA64_FPTRNNLSB);
4423 value -= gp_val;
4424 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4426 break;
4428 case R_IA64_PCREL32MSB:
4429 case R_IA64_PCREL32LSB:
4430 case R_IA64_PCREL64MSB:
4431 case R_IA64_PCREL64LSB:
4432 /* Install a dynamic relocation for this reloc. */
4433 if (dynamic_symbol_p && r_symndx != 0)
4435 BFD_ASSERT (srel != NULL);
4437 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4438 srel, rel->r_offset, r_type,
4439 h->dynindx, rel->r_addend);
4441 goto finish_pcrel;
4443 case R_IA64_PCREL21B:
4444 case R_IA64_PCREL60B:
4445 /* We should have created a PLT entry for any dynamic symbol. */
4446 dyn_i = NULL;
4447 if (h)
4448 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4450 if (dyn_i && dyn_i->want_plt2)
4452 /* Should have caught this earlier. */
4453 BFD_ASSERT (rel->r_addend == 0);
4455 value = (ia64_info->plt_sec->output_section->vma
4456 + ia64_info->plt_sec->output_offset
4457 + dyn_i->plt2_offset);
4459 else
4461 /* Since there's no PLT entry, Validate that this is
4462 locally defined. */
4463 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
4465 /* If the symbol is undef_weak, we shouldn't be trying
4466 to call it. There's every chance that we'd wind up
4467 with an out-of-range fixup here. Don't bother setting
4468 any value at all. */
4469 if (undef_weak_ref)
4470 continue;
4472 goto finish_pcrel;
4474 case R_IA64_PCREL21BI:
4475 case R_IA64_PCREL21F:
4476 case R_IA64_PCREL21M:
4477 case R_IA64_PCREL22:
4478 case R_IA64_PCREL64I:
4479 /* The PCREL21BI reloc is specifically not intended for use with
4480 dynamic relocs. PCREL21F and PCREL21M are used for speculation
4481 fixup code, and thus probably ought not be dynamic. The
4482 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
4483 if (dynamic_symbol_p)
4485 const char *msg;
4487 if (r_type == R_IA64_PCREL21BI)
4488 msg = _("%B: @internal branch to dynamic symbol %s");
4489 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
4490 msg = _("%B: speculation fixup to dynamic symbol %s");
4491 else
4492 msg = _("%B: @pcrel relocation against dynamic symbol %s");
4493 (*_bfd_error_handler) (msg, input_bfd,
4494 h ? h->root.root.string
4495 : bfd_elf_sym_name (input_bfd,
4496 symtab_hdr,
4497 sym,
4498 sym_sec));
4499 ret_val = FALSE;
4500 continue;
4502 goto finish_pcrel;
4504 finish_pcrel:
4505 /* Make pc-relative. */
4506 value -= (input_section->output_section->vma
4507 + input_section->output_offset
4508 + rel->r_offset) & ~ (bfd_vma) 0x3;
4509 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4510 break;
4512 case R_IA64_SEGREL32MSB:
4513 case R_IA64_SEGREL32LSB:
4514 case R_IA64_SEGREL64MSB:
4515 case R_IA64_SEGREL64LSB:
4516 if (r_symndx == 0)
4518 /* If the input section was discarded from the output, then
4519 do nothing. */
4520 r = bfd_reloc_ok;
4522 else
4524 struct elf_segment_map *m;
4525 Elf_Internal_Phdr *p;
4527 /* Find the segment that contains the output_section. */
4528 for (m = elf_tdata (output_bfd)->segment_map,
4529 p = elf_tdata (output_bfd)->phdr;
4530 m != NULL;
4531 m = m->next, p++)
4533 int i;
4534 for (i = m->count - 1; i >= 0; i--)
4535 if (m->sections[i] == input_section->output_section)
4536 break;
4537 if (i >= 0)
4538 break;
4541 if (m == NULL)
4543 r = bfd_reloc_notsupported;
4545 else
4547 /* The VMA of the segment is the vaddr of the associated
4548 program header. */
4549 if (value > p->p_vaddr)
4550 value -= p->p_vaddr;
4551 else
4552 value = 0;
4553 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4555 break;
4558 case R_IA64_SECREL32MSB:
4559 case R_IA64_SECREL32LSB:
4560 case R_IA64_SECREL64MSB:
4561 case R_IA64_SECREL64LSB:
4562 /* Make output-section relative to section where the symbol
4563 is defined. PR 475 */
4564 if (sym_sec)
4565 value -= sym_sec->output_section->vma;
4566 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4567 break;
4569 case R_IA64_IPLTMSB:
4570 case R_IA64_IPLTLSB:
4571 /* Install a dynamic relocation for this reloc. */
4572 if ((dynamic_symbol_p || info->shared)
4573 && (input_section->flags & SEC_ALLOC) != 0)
4575 BFD_ASSERT (srel != NULL);
4577 /* If we don't need dynamic symbol lookup, install two
4578 RELATIVE relocations. */
4579 if (!dynamic_symbol_p)
4581 unsigned int dyn_r_type;
4583 if (r_type == R_IA64_IPLTMSB)
4584 dyn_r_type = R_IA64_REL64MSB;
4585 else
4586 dyn_r_type = R_IA64_REL64LSB;
4588 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4589 input_section,
4590 srel, rel->r_offset,
4591 dyn_r_type, 0, value);
4592 elfNN_ia64_install_dyn_reloc (output_bfd, info,
4593 input_section,
4594 srel, rel->r_offset + 8,
4595 dyn_r_type, 0, gp_val);
4597 else
4598 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
4599 srel, rel->r_offset, r_type,
4600 h->dynindx, rel->r_addend);
4603 if (r_type == R_IA64_IPLTMSB)
4604 r_type = R_IA64_DIR64MSB;
4605 else
4606 r_type = R_IA64_DIR64LSB;
4607 elfNN_ia64_install_value (hit_addr, value, r_type);
4608 r = elfNN_ia64_install_value (hit_addr + 8, gp_val, r_type);
4609 break;
4611 case R_IA64_TPREL14:
4612 case R_IA64_TPREL22:
4613 case R_IA64_TPREL64I:
4614 value -= elfNN_ia64_tprel_base (info);
4615 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4616 break;
4618 case R_IA64_DTPREL14:
4619 case R_IA64_DTPREL22:
4620 case R_IA64_DTPREL64I:
4621 case R_IA64_DTPREL32LSB:
4622 case R_IA64_DTPREL32MSB:
4623 case R_IA64_DTPREL64LSB:
4624 case R_IA64_DTPREL64MSB:
4625 value -= elfNN_ia64_dtprel_base (info);
4626 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4627 break;
4629 case R_IA64_LTOFF_TPREL22:
4630 case R_IA64_LTOFF_DTPMOD22:
4631 case R_IA64_LTOFF_DTPREL22:
4633 int got_r_type;
4634 long dynindx = h ? h->dynindx : -1;
4635 bfd_vma r_addend = rel->r_addend;
4637 switch (r_type)
4639 default:
4640 case R_IA64_LTOFF_TPREL22:
4641 if (!dynamic_symbol_p)
4643 if (!info->shared)
4644 value -= elfNN_ia64_tprel_base (info);
4645 else
4647 r_addend += value - elfNN_ia64_dtprel_base (info);
4648 dynindx = 0;
4651 got_r_type = R_IA64_TPREL64LSB;
4652 break;
4653 case R_IA64_LTOFF_DTPMOD22:
4654 if (!dynamic_symbol_p && !info->shared)
4655 value = 1;
4656 got_r_type = R_IA64_DTPMOD64LSB;
4657 break;
4658 case R_IA64_LTOFF_DTPREL22:
4659 if (!dynamic_symbol_p)
4660 value -= elfNN_ia64_dtprel_base (info);
4661 got_r_type = R_IA64_DTPRELNNLSB;
4662 break;
4664 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
4665 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
4666 value, got_r_type);
4667 value -= gp_val;
4668 r = elfNN_ia64_install_value (hit_addr, value, r_type);
4670 break;
4672 default:
4673 r = bfd_reloc_notsupported;
4674 break;
4677 switch (r)
4679 case bfd_reloc_ok:
4680 break;
4682 case bfd_reloc_undefined:
4683 /* This can happen for global table relative relocs if
4684 __gp is undefined. This is a panic situation so we
4685 don't try to continue. */
4686 (*info->callbacks->undefined_symbol)
4687 (info, "__gp", input_bfd, input_section, rel->r_offset, 1);
4688 return FALSE;
4690 case bfd_reloc_notsupported:
4692 const char *name;
4694 if (h)
4695 name = h->root.root.string;
4696 else
4697 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4698 sym_sec);
4699 if (!(*info->callbacks->warning) (info, _("unsupported reloc"),
4700 name, input_bfd,
4701 input_section, rel->r_offset))
4702 return FALSE;
4703 ret_val = FALSE;
4705 break;
4707 case bfd_reloc_dangerous:
4708 case bfd_reloc_outofrange:
4709 case bfd_reloc_overflow:
4710 default:
4712 const char *name;
4714 if (h)
4715 name = h->root.root.string;
4716 else
4717 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4718 sym_sec);
4720 switch (r_type)
4722 case R_IA64_PCREL21B:
4723 case R_IA64_PCREL21BI:
4724 case R_IA64_PCREL21M:
4725 case R_IA64_PCREL21F:
4726 if (is_elf_hash_table (info->hash))
4728 /* Relaxtion is always performed for ELF output.
4729 Overflow failures for those relocations mean
4730 that the section is too big to relax. */
4731 (*_bfd_error_handler)
4732 (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."),
4733 input_bfd, input_section, howto->name, name,
4734 rel->r_offset, input_section->size);
4735 break;
4737 default:
4738 if (!(*info->callbacks->reloc_overflow) (info,
4739 &h->root,
4740 name,
4741 howto->name,
4742 (bfd_vma) 0,
4743 input_bfd,
4744 input_section,
4745 rel->r_offset))
4746 return FALSE;
4747 break;
4750 ret_val = FALSE;
4752 break;
4756 return ret_val;
4759 static bfd_boolean
4760 elfNN_ia64_finish_dynamic_symbol (output_bfd, info, h, sym)
4761 bfd *output_bfd;
4762 struct bfd_link_info *info;
4763 struct elf_link_hash_entry *h;
4764 Elf_Internal_Sym *sym;
4766 struct elfNN_ia64_link_hash_table *ia64_info;
4767 struct elfNN_ia64_dyn_sym_info *dyn_i;
4769 ia64_info = elfNN_ia64_hash_table (info);
4770 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
4772 /* Fill in the PLT data, if required. */
4773 if (dyn_i && dyn_i->want_plt)
4775 Elf_Internal_Rela outrel;
4776 bfd_byte *loc;
4777 asection *plt_sec;
4778 bfd_vma plt_addr, pltoff_addr, gp_val, index;
4780 gp_val = _bfd_get_gp_value (output_bfd);
4782 /* Initialize the minimal PLT entry. */
4784 index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
4785 plt_sec = ia64_info->plt_sec;
4786 loc = plt_sec->contents + dyn_i->plt_offset;
4788 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
4789 elfNN_ia64_install_value (loc, index, R_IA64_IMM22);
4790 elfNN_ia64_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
4792 plt_addr = (plt_sec->output_section->vma
4793 + plt_sec->output_offset
4794 + dyn_i->plt_offset);
4795 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
4797 /* Initialize the FULL PLT entry, if needed. */
4798 if (dyn_i->want_plt2)
4800 loc = plt_sec->contents + dyn_i->plt2_offset;
4802 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
4803 elfNN_ia64_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
4805 /* Mark the symbol as undefined, rather than as defined in the
4806 plt section. Leave the value alone. */
4807 /* ??? We didn't redefine it in adjust_dynamic_symbol in the
4808 first place. But perhaps elflink.c did some for us. */
4809 if (!h->def_regular)
4810 sym->st_shndx = SHN_UNDEF;
4813 /* Create the dynamic relocation. */
4814 outrel.r_offset = pltoff_addr;
4815 if (bfd_little_endian (output_bfd))
4816 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
4817 else
4818 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
4819 outrel.r_addend = 0;
4821 /* This is fun. In the .IA_64.pltoff section, we've got entries
4822 that correspond both to real PLT entries, and those that
4823 happened to resolve to local symbols but need to be created
4824 to satisfy @pltoff relocations. The .rela.IA_64.pltoff
4825 relocations for the real PLT should come at the end of the
4826 section, so that they can be indexed by plt entry at runtime.
4828 We emitted all of the relocations for the non-PLT @pltoff
4829 entries during relocate_section. So we can consider the
4830 existing sec->reloc_count to be the base of the array of
4831 PLT relocations. */
4833 loc = ia64_info->rel_pltoff_sec->contents;
4834 loc += ((ia64_info->rel_pltoff_sec->reloc_count + index)
4835 * sizeof (ElfNN_External_Rela));
4836 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
4839 /* Mark some specially defined symbols as absolute. */
4840 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4841 || h == ia64_info->root.hgot
4842 || h == ia64_info->root.hplt)
4843 sym->st_shndx = SHN_ABS;
4845 return TRUE;
4848 static bfd_boolean
4849 elfNN_ia64_finish_dynamic_sections (abfd, info)
4850 bfd *abfd;
4851 struct bfd_link_info *info;
4853 struct elfNN_ia64_link_hash_table *ia64_info;
4854 bfd *dynobj;
4856 ia64_info = elfNN_ia64_hash_table (info);
4857 dynobj = ia64_info->root.dynobj;
4859 if (elf_hash_table (info)->dynamic_sections_created)
4861 ElfNN_External_Dyn *dyncon, *dynconend;
4862 asection *sdyn, *sgotplt;
4863 bfd_vma gp_val;
4865 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4866 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
4867 BFD_ASSERT (sdyn != NULL);
4868 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
4869 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
4871 gp_val = _bfd_get_gp_value (abfd);
4873 for (; dyncon < dynconend; dyncon++)
4875 Elf_Internal_Dyn dyn;
4877 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
4879 switch (dyn.d_tag)
4881 case DT_PLTGOT:
4882 dyn.d_un.d_ptr = gp_val;
4883 break;
4885 case DT_PLTRELSZ:
4886 dyn.d_un.d_val = (ia64_info->minplt_entries
4887 * sizeof (ElfNN_External_Rela));
4888 break;
4890 case DT_JMPREL:
4891 /* See the comment above in finish_dynamic_symbol. */
4892 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
4893 + ia64_info->rel_pltoff_sec->output_offset
4894 + (ia64_info->rel_pltoff_sec->reloc_count
4895 * sizeof (ElfNN_External_Rela)));
4896 break;
4898 case DT_IA_64_PLT_RESERVE:
4899 dyn.d_un.d_ptr = (sgotplt->output_section->vma
4900 + sgotplt->output_offset);
4901 break;
4903 case DT_RELASZ:
4904 /* Do not have RELASZ include JMPREL. This makes things
4905 easier on ld.so. This is not what the rest of BFD set up. */
4906 dyn.d_un.d_val -= (ia64_info->minplt_entries
4907 * sizeof (ElfNN_External_Rela));
4908 break;
4911 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
4914 /* Initialize the PLT0 entry. */
4915 if (ia64_info->plt_sec)
4917 bfd_byte *loc = ia64_info->plt_sec->contents;
4918 bfd_vma pltres;
4920 memcpy (loc, plt_header, PLT_HEADER_SIZE);
4922 pltres = (sgotplt->output_section->vma
4923 + sgotplt->output_offset
4924 - gp_val);
4926 elfNN_ia64_install_value (loc+1, pltres, R_IA64_GPREL22);
4930 return TRUE;
4933 /* ELF file flag handling: */
4935 /* Function to keep IA-64 specific file flags. */
4936 static bfd_boolean
4937 elfNN_ia64_set_private_flags (abfd, flags)
4938 bfd *abfd;
4939 flagword flags;
4941 BFD_ASSERT (!elf_flags_init (abfd)
4942 || elf_elfheader (abfd)->e_flags == flags);
4944 elf_elfheader (abfd)->e_flags = flags;
4945 elf_flags_init (abfd) = TRUE;
4946 return TRUE;
4949 /* Merge backend specific data from an object file to the output
4950 object file when linking. */
4951 static bfd_boolean
4952 elfNN_ia64_merge_private_bfd_data (ibfd, obfd)
4953 bfd *ibfd, *obfd;
4955 flagword out_flags;
4956 flagword in_flags;
4957 bfd_boolean ok = TRUE;
4959 /* Don't even pretend to support mixed-format linking. */
4960 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4961 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4962 return FALSE;
4964 in_flags = elf_elfheader (ibfd)->e_flags;
4965 out_flags = elf_elfheader (obfd)->e_flags;
4967 if (! elf_flags_init (obfd))
4969 elf_flags_init (obfd) = TRUE;
4970 elf_elfheader (obfd)->e_flags = in_flags;
4972 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4973 && bfd_get_arch_info (obfd)->the_default)
4975 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4976 bfd_get_mach (ibfd));
4979 return TRUE;
4982 /* Check flag compatibility. */
4983 if (in_flags == out_flags)
4984 return TRUE;
4986 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
4987 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
4988 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
4990 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
4992 (*_bfd_error_handler)
4993 (_("%B: linking trap-on-NULL-dereference with non-trapping files"),
4994 ibfd);
4996 bfd_set_error (bfd_error_bad_value);
4997 ok = FALSE;
4999 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
5001 (*_bfd_error_handler)
5002 (_("%B: linking big-endian files with little-endian files"),
5003 ibfd);
5005 bfd_set_error (bfd_error_bad_value);
5006 ok = FALSE;
5008 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
5010 (*_bfd_error_handler)
5011 (_("%B: linking 64-bit files with 32-bit files"),
5012 ibfd);
5014 bfd_set_error (bfd_error_bad_value);
5015 ok = FALSE;
5017 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
5019 (*_bfd_error_handler)
5020 (_("%B: linking constant-gp files with non-constant-gp files"),
5021 ibfd);
5023 bfd_set_error (bfd_error_bad_value);
5024 ok = FALSE;
5026 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
5027 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
5029 (*_bfd_error_handler)
5030 (_("%B: linking auto-pic files with non-auto-pic files"),
5031 ibfd);
5033 bfd_set_error (bfd_error_bad_value);
5034 ok = FALSE;
5037 return ok;
5040 static bfd_boolean
5041 elfNN_ia64_print_private_bfd_data (abfd, ptr)
5042 bfd *abfd;
5043 PTR ptr;
5045 FILE *file = (FILE *) ptr;
5046 flagword flags = elf_elfheader (abfd)->e_flags;
5048 BFD_ASSERT (abfd != NULL && ptr != NULL);
5050 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
5051 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
5052 (flags & EF_IA_64_EXT) ? "EXT, " : "",
5053 (flags & EF_IA_64_BE) ? "BE, " : "LE, ",
5054 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
5055 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
5056 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
5057 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
5058 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
5060 _bfd_elf_print_private_bfd_data (abfd, ptr);
5061 return TRUE;
5064 static enum elf_reloc_type_class
5065 elfNN_ia64_reloc_type_class (rela)
5066 const Elf_Internal_Rela *rela;
5068 switch ((int) ELFNN_R_TYPE (rela->r_info))
5070 case R_IA64_REL32MSB:
5071 case R_IA64_REL32LSB:
5072 case R_IA64_REL64MSB:
5073 case R_IA64_REL64LSB:
5074 return reloc_class_relative;
5075 case R_IA64_IPLTMSB:
5076 case R_IA64_IPLTLSB:
5077 return reloc_class_plt;
5078 case R_IA64_COPY:
5079 return reloc_class_copy;
5080 default:
5081 return reloc_class_normal;
5085 static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
5087 { ".sbss", 5, -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
5088 { ".sdata", 6, -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
5089 { NULL, 0, 0, 0, 0 }
5092 static bfd_boolean
5093 elfNN_ia64_object_p (bfd *abfd)
5095 asection *sec;
5096 asection *group, *unwi, *unw;
5097 flagword flags;
5098 const char *name;
5099 char *unwi_name, *unw_name;
5100 bfd_size_type amt;
5102 if (abfd->flags & DYNAMIC)
5103 return TRUE;
5105 /* Flags for fake group section. */
5106 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
5107 | SEC_EXCLUDE);
5109 /* We add a fake section group for each .gnu.linkonce.t.* section,
5110 which isn't in a section group, and its unwind sections. */
5111 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5113 if (elf_sec_group (sec) == NULL
5114 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
5115 == (SEC_LINK_ONCE | SEC_CODE))
5116 && strncmp (sec->name, ".gnu.linkonce.t.", 16) == 0)
5118 name = sec->name + 16;
5120 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
5121 unwi_name = bfd_alloc (abfd, amt);
5122 if (!unwi_name)
5123 return FALSE;
5125 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
5126 unwi = bfd_get_section_by_name (abfd, unwi_name);
5128 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
5129 unw_name = bfd_alloc (abfd, amt);
5130 if (!unw_name)
5131 return FALSE;
5133 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
5134 unw = bfd_get_section_by_name (abfd, unw_name);
5136 /* We need to create a fake group section for it and its
5137 unwind sections. */
5138 group = bfd_make_section_anyway_with_flags (abfd, name,
5139 flags);
5140 if (group == NULL)
5141 return FALSE;
5143 /* Move the fake group section to the beginning. */
5144 bfd_section_list_remove (abfd, group);
5145 bfd_section_list_prepend (abfd, group);
5147 elf_next_in_group (group) = sec;
5149 elf_group_name (sec) = name;
5150 elf_next_in_group (sec) = sec;
5151 elf_sec_group (sec) = group;
5153 if (unwi)
5155 elf_group_name (unwi) = name;
5156 elf_next_in_group (unwi) = sec;
5157 elf_next_in_group (sec) = unwi;
5158 elf_sec_group (unwi) = group;
5161 if (unw)
5163 elf_group_name (unw) = name;
5164 if (unwi)
5166 elf_next_in_group (unw) = elf_next_in_group (unwi);
5167 elf_next_in_group (unwi) = unw;
5169 else
5171 elf_next_in_group (unw) = sec;
5172 elf_next_in_group (sec) = unw;
5174 elf_sec_group (unw) = group;
5177 /* Fake SHT_GROUP section header. */
5178 elf_section_data (group)->this_hdr.bfd_section = group;
5179 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
5182 return TRUE;
5185 static bfd_boolean
5186 elfNN_ia64_hpux_vec (const bfd_target *vec)
5188 extern const bfd_target bfd_elfNN_ia64_hpux_big_vec;
5189 return (vec == & bfd_elfNN_ia64_hpux_big_vec);
5192 static void
5193 elfNN_hpux_post_process_headers (abfd, info)
5194 bfd *abfd;
5195 struct bfd_link_info *info ATTRIBUTE_UNUSED;
5197 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
5199 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
5200 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
5203 bfd_boolean
5204 elfNN_hpux_backend_section_from_bfd_section (abfd, sec, retval)
5205 bfd *abfd ATTRIBUTE_UNUSED;
5206 asection *sec;
5207 int *retval;
5209 if (bfd_is_com_section (sec))
5211 *retval = SHN_IA_64_ANSI_COMMON;
5212 return TRUE;
5214 return FALSE;
5217 static void
5218 elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
5219 asymbol *asym)
5221 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
5223 switch (elfsym->internal_elf_sym.st_shndx)
5225 case SHN_IA_64_ANSI_COMMON:
5226 asym->section = bfd_com_section_ptr;
5227 asym->value = elfsym->internal_elf_sym.st_size;
5228 asym->flags &= ~BSF_GLOBAL;
5229 break;
5234 #define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec
5235 #define TARGET_LITTLE_NAME "elfNN-ia64-little"
5236 #define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec
5237 #define TARGET_BIG_NAME "elfNN-ia64-big"
5238 #define ELF_ARCH bfd_arch_ia64
5239 #define ELF_MACHINE_CODE EM_IA_64
5240 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
5241 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
5242 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */
5244 #define elf_backend_section_from_shdr \
5245 elfNN_ia64_section_from_shdr
5246 #define elf_backend_section_flags \
5247 elfNN_ia64_section_flags
5248 #define elf_backend_fake_sections \
5249 elfNN_ia64_fake_sections
5250 #define elf_backend_final_write_processing \
5251 elfNN_ia64_final_write_processing
5252 #define elf_backend_add_symbol_hook \
5253 elfNN_ia64_add_symbol_hook
5254 #define elf_backend_additional_program_headers \
5255 elfNN_ia64_additional_program_headers
5256 #define elf_backend_modify_segment_map \
5257 elfNN_ia64_modify_segment_map
5258 #define elf_info_to_howto \
5259 elfNN_ia64_info_to_howto
5261 #define bfd_elfNN_bfd_reloc_type_lookup \
5262 elfNN_ia64_reloc_type_lookup
5263 #define bfd_elfNN_bfd_is_local_label_name \
5264 elfNN_ia64_is_local_label_name
5265 #define bfd_elfNN_bfd_relax_section \
5266 elfNN_ia64_relax_section
5268 #define elf_backend_object_p \
5269 elfNN_ia64_object_p
5271 /* Stuff for the BFD linker: */
5272 #define bfd_elfNN_bfd_link_hash_table_create \
5273 elfNN_ia64_hash_table_create
5274 #define bfd_elfNN_bfd_link_hash_table_free \
5275 elfNN_ia64_hash_table_free
5276 #define elf_backend_create_dynamic_sections \
5277 elfNN_ia64_create_dynamic_sections
5278 #define elf_backend_check_relocs \
5279 elfNN_ia64_check_relocs
5280 #define elf_backend_adjust_dynamic_symbol \
5281 elfNN_ia64_adjust_dynamic_symbol
5282 #define elf_backend_size_dynamic_sections \
5283 elfNN_ia64_size_dynamic_sections
5284 #define elf_backend_relocate_section \
5285 elfNN_ia64_relocate_section
5286 #define elf_backend_finish_dynamic_symbol \
5287 elfNN_ia64_finish_dynamic_symbol
5288 #define elf_backend_finish_dynamic_sections \
5289 elfNN_ia64_finish_dynamic_sections
5290 #define bfd_elfNN_bfd_final_link \
5291 elfNN_ia64_final_link
5293 #define bfd_elfNN_bfd_merge_private_bfd_data \
5294 elfNN_ia64_merge_private_bfd_data
5295 #define bfd_elfNN_bfd_set_private_flags \
5296 elfNN_ia64_set_private_flags
5297 #define bfd_elfNN_bfd_print_private_bfd_data \
5298 elfNN_ia64_print_private_bfd_data
5300 #define elf_backend_plt_readonly 1
5301 #define elf_backend_want_plt_sym 0
5302 #define elf_backend_plt_alignment 5
5303 #define elf_backend_got_header_size 0
5304 #define elf_backend_want_got_plt 1
5305 #define elf_backend_may_use_rel_p 1
5306 #define elf_backend_may_use_rela_p 1
5307 #define elf_backend_default_use_rela_p 1
5308 #define elf_backend_want_dynbss 0
5309 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
5310 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
5311 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
5312 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
5313 #define elf_backend_rela_normal 1
5314 #define elf_backend_special_sections elfNN_ia64_special_sections
5316 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
5317 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
5318 We don't want to flood users with so many error messages. We turn
5319 off the warning for now. It will be turned on later when the Intel
5320 compiler is fixed. */
5321 #define elf_backend_link_order_error_handler NULL
5323 #include "elfNN-target.h"
5325 /* HPUX-specific vectors. */
5327 #undef TARGET_LITTLE_SYM
5328 #undef TARGET_LITTLE_NAME
5329 #undef TARGET_BIG_SYM
5330 #define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec
5331 #undef TARGET_BIG_NAME
5332 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
5334 /* These are HP-UX specific functions. */
5336 #undef elf_backend_post_process_headers
5337 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers
5339 #undef elf_backend_section_from_bfd_section
5340 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
5342 #undef elf_backend_symbol_processing
5343 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
5345 #undef elf_backend_want_p_paddr_set_to_zero
5346 #define elf_backend_want_p_paddr_set_to_zero 1
5348 #undef ELF_MAXPAGESIZE
5349 #define ELF_MAXPAGESIZE 0x1000 /* 1K */
5351 #undef elfNN_bed
5352 #define elfNN_bed elfNN_ia64_hpux_bed
5354 #include "elfNN-target.h"
5356 #undef elf_backend_want_p_paddr_set_to_zero