1 /* ELF executable support for BFD.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001 Free Software Foundation, Inc.
5 Written by Fred Fish @ Cygnus Support, from information published
6 in "UNIX System V Release 4, Programmers Guide: ANSI C and
7 Programming Support Tools". Sufficient support for gdb.
9 Rewritten by Mark Eichin @ Cygnus Support, from information
10 published in "System V Application Binary Interface", chapters 4
11 and 5, as well as the various "Processor Supplement" documents
12 derived from it. Added support for assembler and other object file
13 utilities. Further work done by Ken Raeburn (Cygnus Support), Michael
14 Meissner (Open Software Foundation), and Peter Hoogenboom (University
15 of Utah) to finish and extend this.
17 This file is part of BFD, the Binary File Descriptor library.
19 This program is free software; you can redistribute it and/or modify
20 it under the terms of the GNU General Public License as published by
21 the Free Software Foundation; either version 2 of the License, or
22 (at your option) any later version.
24 This program is distributed in the hope that it will be useful,
25 but WITHOUT ANY WARRANTY; without even the implied warranty of
26 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 GNU General Public License for more details.
29 You should have received a copy of the GNU General Public License
30 along with this program; if not, write to the Free Software
31 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
33 /* Problems and other issues to resolve.
35 (1) BFD expects there to be some fixed number of "sections" in
36 the object file. I.E. there is a "section_count" variable in the
37 bfd structure which contains the number of sections. However, ELF
38 supports multiple "views" of a file. In particular, with current
39 implementations, executable files typically have two tables, a
40 program header table and a section header table, both of which
41 partition the executable.
43 In ELF-speak, the "linking view" of the file uses the section header
44 table to access "sections" within the file, and the "execution view"
45 uses the program header table to access "segments" within the file.
46 "Segments" typically may contain all the data from one or more
49 Note that the section header table is optional in ELF executables,
50 but it is this information that is most useful to gdb. If the
51 section header table is missing, then gdb should probably try
52 to make do with the program header table. (FIXME)
54 (2) The code in this file is compiled twice, once in 32-bit mode and
55 once in 64-bit mode. More of it should be made size-independent
58 (3) ELF section symbols are handled rather sloppily now. This should
59 be cleaned up, and ELF section symbols reconciled with BFD section
62 (4) We need a published spec for 64-bit ELF. We've got some stuff here
63 that we're using for SPARC V9 64-bit chips, but don't assume that
69 #include "libiberty.h"
74 /* Renaming structures, typedefs, macros and functions to be size-specific. */
75 #define Elf_External_Ehdr NAME(Elf,External_Ehdr)
76 #define Elf_External_Sym NAME(Elf,External_Sym)
77 #define Elf_External_Shdr NAME(Elf,External_Shdr)
78 #define Elf_External_Phdr NAME(Elf,External_Phdr)
79 #define Elf_External_Rel NAME(Elf,External_Rel)
80 #define Elf_External_Rela NAME(Elf,External_Rela)
81 #define Elf_External_Dyn NAME(Elf,External_Dyn)
83 #define elf_core_file_failing_command NAME(bfd_elf,core_file_failing_command)
84 #define elf_core_file_failing_signal NAME(bfd_elf,core_file_failing_signal)
85 #define elf_core_file_matches_executable_p \
86 NAME(bfd_elf,core_file_matches_executable_p)
87 #define elf_object_p NAME(bfd_elf,object_p)
88 #define elf_core_file_p NAME(bfd_elf,core_file_p)
89 #define elf_get_symtab_upper_bound NAME(bfd_elf,get_symtab_upper_bound)
90 #define elf_get_dynamic_symtab_upper_bound \
91 NAME(bfd_elf,get_dynamic_symtab_upper_bound)
92 #define elf_swap_reloc_in NAME(bfd_elf,swap_reloc_in)
93 #define elf_swap_reloca_in NAME(bfd_elf,swap_reloca_in)
94 #define elf_swap_reloc_out NAME(bfd_elf,swap_reloc_out)
95 #define elf_swap_reloca_out NAME(bfd_elf,swap_reloca_out)
96 #define elf_swap_symbol_in NAME(bfd_elf,swap_symbol_in)
97 #define elf_swap_symbol_out NAME(bfd_elf,swap_symbol_out)
98 #define elf_swap_phdr_in NAME(bfd_elf,swap_phdr_in)
99 #define elf_swap_phdr_out NAME(bfd_elf,swap_phdr_out)
100 #define elf_swap_dyn_in NAME(bfd_elf,swap_dyn_in)
101 #define elf_swap_dyn_out NAME(bfd_elf,swap_dyn_out)
102 #define elf_get_reloc_upper_bound NAME(bfd_elf,get_reloc_upper_bound)
103 #define elf_canonicalize_reloc NAME(bfd_elf,canonicalize_reloc)
104 #define elf_slurp_symbol_table NAME(bfd_elf,slurp_symbol_table)
105 #define elf_get_symtab NAME(bfd_elf,get_symtab)
106 #define elf_canonicalize_dynamic_symtab \
107 NAME(bfd_elf,canonicalize_dynamic_symtab)
108 #define elf_make_empty_symbol NAME(bfd_elf,make_empty_symbol)
109 #define elf_get_symbol_info NAME(bfd_elf,get_symbol_info)
110 #define elf_get_lineno NAME(bfd_elf,get_lineno)
111 #define elf_set_arch_mach NAME(bfd_elf,set_arch_mach)
112 #define elf_find_nearest_line NAME(bfd_elf,find_nearest_line)
113 #define elf_sizeof_headers NAME(bfd_elf,sizeof_headers)
114 #define elf_set_section_contents NAME(bfd_elf,set_section_contents)
115 #define elf_no_info_to_howto NAME(bfd_elf,no_info_to_howto)
116 #define elf_no_info_to_howto_rel NAME(bfd_elf,no_info_to_howto_rel)
117 #define elf_find_section NAME(bfd_elf,find_section)
118 #define elf_bfd_link_add_symbols NAME(bfd_elf,bfd_link_add_symbols)
119 #define elf_add_dynamic_entry NAME(bfd_elf,add_dynamic_entry)
120 #define elf_write_shdrs_and_ehdr NAME(bfd_elf,write_shdrs_and_ehdr)
121 #define elf_write_out_phdrs NAME(bfd_elf,write_out_phdrs)
122 #define elf_write_relocs NAME(bfd_elf,write_relocs)
123 #define elf_slurp_reloc_table NAME(bfd_elf,slurp_reloc_table)
124 #define elf_link_create_dynamic_sections \
125 NAME(bfd_elf,link_create_dynamic_sections)
126 #define elf_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol
127 #define elf_bfd_final_link NAME(bfd_elf,bfd_final_link)
128 #define elf_create_pointer_linker_section NAME(bfd_elf,create_pointer_linker_section)
129 #define elf_finish_pointer_linker_section NAME(bfd_elf,finish_pointer_linker_section)
130 #define elf_gc_sections NAME(_bfd_elf,gc_sections)
131 #define elf_gc_common_finalize_got_offsets \
132 NAME(_bfd_elf,gc_common_finalize_got_offsets)
133 #define elf_gc_common_final_link NAME(_bfd_elf,gc_common_final_link)
134 #define elf_gc_record_vtinherit NAME(_bfd_elf,gc_record_vtinherit)
135 #define elf_gc_record_vtentry NAME(_bfd_elf,gc_record_vtentry)
136 #define elf_link_record_local_dynamic_symbol \
137 NAME(_bfd_elf,link_record_local_dynamic_symbol)
140 #define ELF_R_INFO(X,Y) ELF64_R_INFO(X,Y)
141 #define ELF_R_SYM(X) ELF64_R_SYM(X)
142 #define ELF_R_TYPE(X) ELF64_R_TYPE(X)
143 #define ELFCLASS ELFCLASS64
145 #define LOG_FILE_ALIGN 3
148 #define ELF_R_INFO(X,Y) ELF32_R_INFO(X,Y)
149 #define ELF_R_SYM(X) ELF32_R_SYM(X)
150 #define ELF_R_TYPE(X) ELF32_R_TYPE(X)
151 #define ELFCLASS ELFCLASS32
153 #define LOG_FILE_ALIGN 2
156 /* Static functions */
158 static void elf_swap_ehdr_in
159 PARAMS ((bfd *, const Elf_External_Ehdr *, Elf_Internal_Ehdr *));
160 static void elf_swap_ehdr_out
161 PARAMS ((bfd *, const Elf_Internal_Ehdr *, Elf_External_Ehdr *));
162 static void elf_swap_shdr_in
163 PARAMS ((bfd *, const Elf_External_Shdr *, Elf_Internal_Shdr *));
164 static void elf_swap_shdr_out
165 PARAMS ((bfd *, const Elf_Internal_Shdr *, Elf_External_Shdr *));
167 #define elf_stringtab_init _bfd_elf_stringtab_init
169 #define section_from_elf_index bfd_section_from_elf_index
171 static boolean elf_slurp_reloc_table_from_section
172 PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, bfd_size_type,
173 arelent *, asymbol **, boolean));
175 static boolean elf_file_p PARAMS ((Elf_External_Ehdr *));
178 static void elf_debug_section PARAMS ((int, Elf_Internal_Shdr *));
179 static void elf_debug_file PARAMS ((Elf_Internal_Ehdr *));
180 static char *elf_symbol_flags PARAMS ((flagword));
183 /* Structure swapping routines */
185 /* Should perhaps use put_offset, put_word, etc. For now, the two versions
186 can be handled by explicitly specifying 32 bits or "the long type". */
188 #define H_PUT_WORD H_PUT_64
189 #define H_PUT_SIGNED_WORD H_PUT_S64
190 #define H_GET_WORD H_GET_64
191 #define H_GET_SIGNED_WORD H_GET_S64
194 #define H_PUT_WORD H_PUT_32
195 #define H_PUT_SIGNED_WORD H_PUT_S32
196 #define H_GET_WORD H_GET_32
197 #define H_GET_SIGNED_WORD H_GET_S32
200 /* Translate an ELF symbol in external format into an ELF symbol in internal
204 elf_swap_symbol_in (abfd, src, dst)
206 const Elf_External_Sym *src;
207 Elf_Internal_Sym *dst;
209 int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma;
211 dst->st_name = H_GET_32 (abfd, src->st_name);
213 dst->st_value = H_GET_SIGNED_WORD (abfd, src->st_value);
215 dst->st_value = H_GET_WORD (abfd, src->st_value);
216 dst->st_size = H_GET_WORD (abfd, src->st_size);
217 dst->st_info = H_GET_8 (abfd, src->st_info);
218 dst->st_other = H_GET_8 (abfd, src->st_other);
219 dst->st_shndx = H_GET_16 (abfd, src->st_shndx);
222 /* Translate an ELF symbol in internal format into an ELF symbol in external
226 elf_swap_symbol_out (abfd, src, cdst)
228 const Elf_Internal_Sym *src;
231 Elf_External_Sym *dst = (Elf_External_Sym *) cdst;
232 H_PUT_32 (abfd, src->st_name, dst->st_name);
233 H_PUT_WORD (abfd, src->st_value, dst->st_value);
234 H_PUT_WORD (abfd, src->st_size, dst->st_size);
235 H_PUT_8 (abfd, src->st_info, dst->st_info);
236 H_PUT_8 (abfd, src->st_other, dst->st_other);
237 H_PUT_16 (abfd, src->st_shndx, dst->st_shndx);
240 /* Translate an ELF file header in external format into an ELF file header in
244 elf_swap_ehdr_in (abfd, src, dst)
246 const Elf_External_Ehdr *src;
247 Elf_Internal_Ehdr *dst;
249 int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma;
250 memcpy (dst->e_ident, src->e_ident, EI_NIDENT);
251 dst->e_type = H_GET_16 (abfd, src->e_type);
252 dst->e_machine = H_GET_16 (abfd, src->e_machine);
253 dst->e_version = H_GET_32 (abfd, src->e_version);
255 dst->e_entry = H_GET_SIGNED_WORD (abfd, src->e_entry);
257 dst->e_entry = H_GET_WORD (abfd, src->e_entry);
258 dst->e_phoff = H_GET_WORD (abfd, src->e_phoff);
259 dst->e_shoff = H_GET_WORD (abfd, src->e_shoff);
260 dst->e_flags = H_GET_32 (abfd, src->e_flags);
261 dst->e_ehsize = H_GET_16 (abfd, src->e_ehsize);
262 dst->e_phentsize = H_GET_16 (abfd, src->e_phentsize);
263 dst->e_phnum = H_GET_16 (abfd, src->e_phnum);
264 dst->e_shentsize = H_GET_16 (abfd, src->e_shentsize);
265 dst->e_shnum = H_GET_16 (abfd, src->e_shnum);
266 dst->e_shstrndx = H_GET_16 (abfd, src->e_shstrndx);
269 /* Translate an ELF file header in internal format into an ELF file header in
273 elf_swap_ehdr_out (abfd, src, dst)
275 const Elf_Internal_Ehdr *src;
276 Elf_External_Ehdr *dst;
278 int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma;
279 memcpy (dst->e_ident, src->e_ident, EI_NIDENT);
280 /* note that all elements of dst are *arrays of unsigned char* already... */
281 H_PUT_16 (abfd, src->e_type, dst->e_type);
282 H_PUT_16 (abfd, src->e_machine, dst->e_machine);
283 H_PUT_32 (abfd, src->e_version, dst->e_version);
285 H_PUT_SIGNED_WORD (abfd, src->e_entry, dst->e_entry);
287 H_PUT_WORD (abfd, src->e_entry, dst->e_entry);
288 H_PUT_WORD (abfd, src->e_phoff, dst->e_phoff);
289 H_PUT_WORD (abfd, src->e_shoff, dst->e_shoff);
290 H_PUT_32 (abfd, src->e_flags, dst->e_flags);
291 H_PUT_16 (abfd, src->e_ehsize, dst->e_ehsize);
292 H_PUT_16 (abfd, src->e_phentsize, dst->e_phentsize);
293 H_PUT_16 (abfd, src->e_phnum, dst->e_phnum);
294 H_PUT_16 (abfd, src->e_shentsize, dst->e_shentsize);
295 H_PUT_16 (abfd, src->e_shnum, dst->e_shnum);
296 H_PUT_16 (abfd, src->e_shstrndx, dst->e_shstrndx);
299 /* Translate an ELF section header table entry in external format into an
300 ELF section header table entry in internal format. */
303 elf_swap_shdr_in (abfd, src, dst)
305 const Elf_External_Shdr *src;
306 Elf_Internal_Shdr *dst;
308 int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma;
310 dst->sh_name = H_GET_32 (abfd, src->sh_name);
311 dst->sh_type = H_GET_32 (abfd, src->sh_type);
312 dst->sh_flags = H_GET_WORD (abfd, src->sh_flags);
314 dst->sh_addr = H_GET_SIGNED_WORD (abfd, src->sh_addr);
316 dst->sh_addr = H_GET_WORD (abfd, src->sh_addr);
317 dst->sh_offset = H_GET_WORD (abfd, src->sh_offset);
318 dst->sh_size = H_GET_WORD (abfd, src->sh_size);
319 dst->sh_link = H_GET_32 (abfd, src->sh_link);
320 dst->sh_info = H_GET_32 (abfd, src->sh_info);
321 dst->sh_addralign = H_GET_WORD (abfd, src->sh_addralign);
322 dst->sh_entsize = H_GET_WORD (abfd, src->sh_entsize);
323 dst->bfd_section = NULL;
324 dst->contents = NULL;
327 /* Translate an ELF section header table entry in internal format into an
328 ELF section header table entry in external format. */
331 elf_swap_shdr_out (abfd, src, dst)
333 const Elf_Internal_Shdr *src;
334 Elf_External_Shdr *dst;
336 /* note that all elements of dst are *arrays of unsigned char* already... */
337 H_PUT_32 (abfd, src->sh_name, dst->sh_name);
338 H_PUT_32 (abfd, src->sh_type, dst->sh_type);
339 H_PUT_WORD (abfd, src->sh_flags, dst->sh_flags);
340 H_PUT_WORD (abfd, src->sh_addr, dst->sh_addr);
341 H_PUT_WORD (abfd, src->sh_offset, dst->sh_offset);
342 H_PUT_WORD (abfd, src->sh_size, dst->sh_size);
343 H_PUT_32 (abfd, src->sh_link, dst->sh_link);
344 H_PUT_32 (abfd, src->sh_info, dst->sh_info);
345 H_PUT_WORD (abfd, src->sh_addralign, dst->sh_addralign);
346 H_PUT_WORD (abfd, src->sh_entsize, dst->sh_entsize);
349 /* Translate an ELF program header table entry in external format into an
350 ELF program header table entry in internal format. */
353 elf_swap_phdr_in (abfd, src, dst)
355 const Elf_External_Phdr *src;
356 Elf_Internal_Phdr *dst;
358 int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma;
360 dst->p_type = H_GET_32 (abfd, src->p_type);
361 dst->p_flags = H_GET_32 (abfd, src->p_flags);
362 dst->p_offset = H_GET_WORD (abfd, src->p_offset);
365 dst->p_vaddr = H_GET_SIGNED_WORD (abfd, src->p_vaddr);
366 dst->p_paddr = H_GET_SIGNED_WORD (abfd, src->p_paddr);
370 dst->p_vaddr = H_GET_WORD (abfd, src->p_vaddr);
371 dst->p_paddr = H_GET_WORD (abfd, src->p_paddr);
373 dst->p_filesz = H_GET_WORD (abfd, src->p_filesz);
374 dst->p_memsz = H_GET_WORD (abfd, src->p_memsz);
375 dst->p_align = H_GET_WORD (abfd, src->p_align);
379 elf_swap_phdr_out (abfd, src, dst)
381 const Elf_Internal_Phdr *src;
382 Elf_External_Phdr *dst;
384 /* note that all elements of dst are *arrays of unsigned char* already... */
385 H_PUT_32 (abfd, src->p_type, dst->p_type);
386 H_PUT_WORD (abfd, src->p_offset, dst->p_offset);
387 H_PUT_WORD (abfd, src->p_vaddr, dst->p_vaddr);
388 H_PUT_WORD (abfd, src->p_paddr, dst->p_paddr);
389 H_PUT_WORD (abfd, src->p_filesz, dst->p_filesz);
390 H_PUT_WORD (abfd, src->p_memsz, dst->p_memsz);
391 H_PUT_32 (abfd, src->p_flags, dst->p_flags);
392 H_PUT_WORD (abfd, src->p_align, dst->p_align);
395 /* Translate an ELF reloc from external format to internal format. */
397 elf_swap_reloc_in (abfd, src, dst)
399 const Elf_External_Rel *src;
400 Elf_Internal_Rel *dst;
402 dst->r_offset = H_GET_WORD (abfd, src->r_offset);
403 dst->r_info = H_GET_WORD (abfd, src->r_info);
407 elf_swap_reloca_in (abfd, src, dst)
409 const Elf_External_Rela *src;
410 Elf_Internal_Rela *dst;
412 dst->r_offset = H_GET_WORD (abfd, src->r_offset);
413 dst->r_info = H_GET_WORD (abfd, src->r_info);
414 dst->r_addend = H_GET_SIGNED_WORD (abfd, src->r_addend);
417 /* Translate an ELF reloc from internal format to external format. */
419 elf_swap_reloc_out (abfd, src, dst)
421 const Elf_Internal_Rel *src;
422 Elf_External_Rel *dst;
424 H_PUT_WORD (abfd, src->r_offset, dst->r_offset);
425 H_PUT_WORD (abfd, src->r_info, dst->r_info);
429 elf_swap_reloca_out (abfd, src, dst)
431 const Elf_Internal_Rela *src;
432 Elf_External_Rela *dst;
434 H_PUT_WORD (abfd, src->r_offset, dst->r_offset);
435 H_PUT_WORD (abfd, src->r_info, dst->r_info);
436 H_PUT_SIGNED_WORD (abfd, src->r_addend, dst->r_addend);
440 elf_swap_dyn_in (abfd, p, dst)
443 Elf_Internal_Dyn *dst;
445 const Elf_External_Dyn *src = (const Elf_External_Dyn *) p;
447 dst->d_tag = H_GET_WORD (abfd, src->d_tag);
448 dst->d_un.d_val = H_GET_WORD (abfd, src->d_un.d_val);
452 elf_swap_dyn_out (abfd, src, p)
454 const Elf_Internal_Dyn *src;
457 Elf_External_Dyn *dst = (Elf_External_Dyn *) p;
459 H_PUT_WORD (abfd, src->d_tag, dst->d_tag);
460 H_PUT_WORD (abfd, src->d_un.d_val, dst->d_un.d_val);
463 /* ELF .o/exec file reading */
465 /* Begin processing a given object.
467 First we validate the file by reading in the ELF header and checking
470 static INLINE boolean
472 Elf_External_Ehdr *x_ehdrp;
474 return ((x_ehdrp->e_ident[EI_MAG0] == ELFMAG0)
475 && (x_ehdrp->e_ident[EI_MAG1] == ELFMAG1)
476 && (x_ehdrp->e_ident[EI_MAG2] == ELFMAG2)
477 && (x_ehdrp->e_ident[EI_MAG3] == ELFMAG3));
480 /* Check to see if the file associated with ABFD matches the target vector
483 Note that we may be called several times with the same ABFD, but different
484 target vectors, most of which will not match. We have to avoid leaving
485 any side effects in ABFD, or any data it points to (like tdata), if the
486 file does not match the target vector. */
492 Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
493 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
494 Elf_External_Shdr x_shdr; /* Section header table entry, external form */
495 Elf_Internal_Shdr *i_shdrp = NULL; /* Section header table, internal form */
496 unsigned int shindex;
497 char *shstrtab; /* Internal copy of section header stringtab */
498 struct elf_backend_data *ebd;
499 struct elf_obj_tdata *preserved_tdata = elf_tdata (abfd);
500 struct sec *preserved_sections = abfd->sections;
501 unsigned int preserved_section_count = abfd->section_count;
502 enum bfd_architecture previous_arch = bfd_get_arch (abfd);
503 unsigned long previous_mach = bfd_get_mach (abfd);
504 struct elf_obj_tdata *new_tdata = NULL;
508 /* Clear section information, since there might be a recognized bfd that
509 we now check if we can replace, and we don't want to append to it. */
510 abfd->sections = NULL;
511 abfd->section_count = 0;
513 /* Read in the ELF header in external format. */
515 if (bfd_bread ((PTR) & x_ehdr, (bfd_size_type) sizeof (x_ehdr), abfd)
518 if (bfd_get_error () != bfd_error_system_call)
519 goto got_wrong_format_error;
524 /* Now check to see if we have a valid ELF file, and one that BFD can
525 make use of. The magic number must match, the address size ('class')
526 and byte-swapping must match our XVEC entry, and it must have a
527 section header table (FIXME: See comments re sections at top of this
530 if ((elf_file_p (&x_ehdr) == false) ||
531 (x_ehdr.e_ident[EI_VERSION] != EV_CURRENT) ||
532 (x_ehdr.e_ident[EI_CLASS] != ELFCLASS))
533 goto got_wrong_format_error;
535 /* Check that file's byte order matches xvec's */
536 switch (x_ehdr.e_ident[EI_DATA])
538 case ELFDATA2MSB: /* Big-endian */
539 if (! bfd_header_big_endian (abfd))
540 goto got_wrong_format_error;
542 case ELFDATA2LSB: /* Little-endian */
543 if (! bfd_header_little_endian (abfd))
544 goto got_wrong_format_error;
546 case ELFDATANONE: /* No data encoding specified */
547 default: /* Unknown data encoding specified */
548 goto got_wrong_format_error;
551 /* Allocate an instance of the elf_obj_tdata structure and hook it up to
552 the tdata pointer in the bfd. */
554 amt = sizeof (struct elf_obj_tdata);
555 new_tdata = (struct elf_obj_tdata *) bfd_zalloc (abfd, amt);
556 if (new_tdata == NULL)
558 elf_tdata (abfd) = new_tdata;
560 /* Now that we know the byte order, swap in the rest of the header */
561 i_ehdrp = elf_elfheader (abfd);
562 elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp);
564 elf_debug_file (i_ehdrp);
567 /* Reject ET_CORE (header indicates core file, not object file) */
568 if (i_ehdrp->e_type == ET_CORE)
569 goto got_wrong_format_error;
571 /* If this is a relocatable file and there is no section header
572 table, then we're hosed. */
573 if (i_ehdrp->e_shoff == 0 && i_ehdrp->e_type == ET_REL)
574 goto got_wrong_format_error;
576 /* As a simple sanity check, verify that the what BFD thinks is the
577 size of each section header table entry actually matches the size
578 recorded in the file, but only if there are any sections. */
579 if (i_ehdrp->e_shentsize != sizeof (x_shdr) && i_ehdrp->e_shnum != 0)
580 goto got_wrong_format_error;
582 ebd = get_elf_backend_data (abfd);
584 /* Check that the ELF e_machine field matches what this particular
585 BFD format expects. */
586 if (ebd->elf_machine_code != i_ehdrp->e_machine
587 && (ebd->elf_machine_alt1 == 0 || i_ehdrp->e_machine != ebd->elf_machine_alt1)
588 && (ebd->elf_machine_alt2 == 0 || i_ehdrp->e_machine != ebd->elf_machine_alt2))
590 const bfd_target * const *target_ptr;
592 if (ebd->elf_machine_code != EM_NONE)
593 goto got_wrong_format_error;
595 /* This is the generic ELF target. Let it match any ELF target
596 for which we do not have a specific backend. */
597 for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++)
599 struct elf_backend_data *back;
601 if ((*target_ptr)->flavour != bfd_target_elf_flavour)
603 back = (struct elf_backend_data *) (*target_ptr)->backend_data;
604 if (back->elf_machine_code == i_ehdrp->e_machine
605 || (back->elf_machine_alt1 != 0
606 && back->elf_machine_alt1 == i_ehdrp->e_machine)
607 || (back->elf_machine_alt2 != 0
608 && back->elf_machine_alt2 == i_ehdrp->e_machine))
610 /* target_ptr is an ELF backend which matches this
611 object file, so reject the generic ELF target. */
612 goto got_wrong_format_error;
617 if (i_ehdrp->e_type == ET_EXEC)
618 abfd->flags |= EXEC_P;
619 else if (i_ehdrp->e_type == ET_DYN)
620 abfd->flags |= DYNAMIC;
622 if (i_ehdrp->e_phnum > 0)
623 abfd->flags |= D_PAGED;
625 if (! bfd_default_set_arch_mach (abfd, ebd->arch, 0))
627 /* It's OK if this fails for the generic target. */
628 if (ebd->elf_machine_code != EM_NONE)
632 /* Remember the entry point specified in the ELF file header. */
633 bfd_set_start_address (abfd, i_ehdrp->e_entry);
635 /* Allocate space for a copy of the section header table in
636 internal form, seek to the section header table in the file,
637 read it in, and convert it to internal form. */
638 if (i_ehdrp->e_shnum != 0)
640 amt = sizeof (*i_shdrp) * i_ehdrp->e_shnum;
641 i_shdrp = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt);
642 amt = sizeof (i_shdrp) * i_ehdrp->e_shnum;
643 elf_elfsections (abfd) = (Elf_Internal_Shdr **) bfd_alloc (abfd, amt);
644 if (!i_shdrp || !elf_elfsections (abfd))
646 if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_shoff, SEEK_SET) != 0)
649 for (shindex = 0; shindex < i_ehdrp->e_shnum; shindex++)
651 if (bfd_bread ((PTR) & x_shdr, (bfd_size_type) sizeof x_shdr, abfd)
654 elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex);
655 elf_elfsections (abfd)[shindex] = i_shdrp + shindex;
657 /* If the section is loaded, but not page aligned, clear
659 if (i_shdrp[shindex].sh_size != 0
660 && (i_shdrp[shindex].sh_flags & SHF_ALLOC) != 0
661 && i_shdrp[shindex].sh_type != SHT_NOBITS
662 && (((i_shdrp[shindex].sh_addr - i_shdrp[shindex].sh_offset)
665 abfd->flags &= ~D_PAGED;
667 if (i_ehdrp->e_shstrndx)
669 if (! bfd_section_from_shdr (abfd, i_ehdrp->e_shstrndx))
673 /* Read in the program headers. */
674 if (i_ehdrp->e_phnum == 0)
675 elf_tdata (abfd)->phdr = NULL;
678 Elf_Internal_Phdr *i_phdr;
681 amt = i_ehdrp->e_phnum * sizeof (Elf_Internal_Phdr);
682 elf_tdata (abfd)->phdr = (Elf_Internal_Phdr *) bfd_alloc (abfd, amt);
683 if (elf_tdata (abfd)->phdr == NULL)
685 if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_phoff, SEEK_SET) != 0)
687 i_phdr = elf_tdata (abfd)->phdr;
688 for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++)
690 Elf_External_Phdr x_phdr;
692 if (bfd_bread ((PTR) &x_phdr, (bfd_size_type) sizeof x_phdr, abfd)
695 elf_swap_phdr_in (abfd, &x_phdr, i_phdr);
699 /* Read in the string table containing the names of the sections. We
700 will need the base pointer to this table later. */
701 /* We read this inline now, so that we don't have to go through
702 bfd_section_from_shdr with it (since this particular strtab is
703 used to find all of the ELF section names.) */
705 if (i_ehdrp->e_shstrndx != 0)
707 shstrtab = bfd_elf_get_str_section (abfd, i_ehdrp->e_shstrndx);
711 /* Once all of the section headers have been read and converted, we
712 can start processing them. Note that the first section header is
713 a dummy placeholder entry, so we ignore it. */
715 for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++)
717 if (! bfd_section_from_shdr (abfd, shindex))
722 /* Let the backend double check the format and override global
724 if (ebd->elf_backend_object_p)
726 if ((*ebd->elf_backend_object_p) (abfd) == false)
727 goto got_wrong_format_error;
730 /* If we have created any reloc sections that are associated with
731 debugging sections, mark the reloc sections as debugging as well. */
732 for (s = abfd->sections; s != NULL; s = s->next)
734 if ((elf_section_data (s)->this_hdr.sh_type == SHT_REL
735 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)
736 && elf_section_data (s)->this_hdr.sh_info > 0)
738 unsigned long targ_index;
741 targ_index = elf_section_data (s)->this_hdr.sh_info;
742 targ_sec = bfd_section_from_elf_index (abfd, targ_index);
744 && (targ_sec->flags & SEC_DEBUGGING) != 0)
745 s->flags |= SEC_DEBUGGING;
751 got_wrong_format_error:
752 /* There is way too much undoing of half-known state here. The caller,
753 bfd_check_format_matches, really shouldn't iterate on live bfd's to
754 check match/no-match like it does. We have to rely on that a call to
755 bfd_default_set_arch_mach with the previously known mach, undoes what
756 was done by the first bfd_default_set_arch_mach (with mach 0) here.
757 For this to work, only elf-data and the mach may be changed by the
758 target-specific elf_backend_object_p function. Note that saving the
759 whole bfd here and restoring it would be even worse; the first thing
760 you notice is that the cached bfd file position gets out of sync. */
761 bfd_default_set_arch_mach (abfd, previous_arch, previous_mach);
762 bfd_set_error (bfd_error_wrong_format);
764 if (new_tdata != NULL
765 && new_tdata->elf_sect_ptr != NULL)
766 bfd_release (abfd, new_tdata->elf_sect_ptr);
768 bfd_release (abfd, i_shdrp);
769 if (new_tdata != NULL)
770 bfd_release (abfd, new_tdata);
771 elf_tdata (abfd) = preserved_tdata;
772 abfd->sections = preserved_sections;
773 abfd->section_count = preserved_section_count;
777 /* ELF .o/exec file writing */
779 /* Write out the relocs. */
782 elf_write_relocs (abfd, sec, data)
787 boolean *failedp = (boolean *) data;
788 Elf_Internal_Shdr *rela_hdr;
789 Elf_External_Rela *outbound_relocas;
790 Elf_External_Rel *outbound_relocs;
793 asymbol *last_sym = 0;
794 int last_sym_idx = 0;
796 /* If we have already failed, don't do anything. */
800 if ((sec->flags & SEC_RELOC) == 0)
803 /* The linker backend writes the relocs out itself, and sets the
804 reloc_count field to zero to inhibit writing them here. Also,
805 sometimes the SEC_RELOC flag gets set even when there aren't any
807 if (sec->reloc_count == 0)
810 rela_hdr = &elf_section_data (sec)->rel_hdr;
812 rela_hdr->sh_size = rela_hdr->sh_entsize * sec->reloc_count;
813 rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size);
814 if (rela_hdr->contents == NULL)
820 /* Figure out whether the relocations are RELA or REL relocations. */
821 if (rela_hdr->sh_type == SHT_RELA)
823 else if (rela_hdr->sh_type == SHT_REL)
826 /* Every relocation section should be either an SHT_RELA or an
830 /* orelocation has the data, reloc_count has the count... */
833 outbound_relocas = (Elf_External_Rela *) rela_hdr->contents;
835 for (idx = 0; idx < sec->reloc_count; idx++)
837 Elf_Internal_Rela dst_rela;
838 Elf_External_Rela *src_rela;
843 ptr = sec->orelocation[idx];
844 src_rela = outbound_relocas + idx;
846 /* The address of an ELF reloc is section relative for an object
847 file, and absolute for an executable file or shared library.
848 The address of a BFD reloc is always section relative. */
849 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
850 dst_rela.r_offset = ptr->address;
852 dst_rela.r_offset = ptr->address + sec->vma;
854 sym = *ptr->sym_ptr_ptr;
857 else if (bfd_is_abs_section (sym->section) && sym->value == 0)
862 n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
871 if ((*ptr->sym_ptr_ptr)->the_bfd != NULL
872 && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
873 && ! _bfd_elf_validate_reloc (abfd, ptr))
879 dst_rela.r_info = ELF_R_INFO (n, ptr->howto->type);
881 dst_rela.r_addend = ptr->addend;
882 elf_swap_reloca_out (abfd, &dst_rela, src_rela);
886 /* REL relocations */
888 outbound_relocs = (Elf_External_Rel *) rela_hdr->contents;
890 for (idx = 0; idx < sec->reloc_count; idx++)
892 Elf_Internal_Rel dst_rel;
893 Elf_External_Rel *src_rel;
898 ptr = sec->orelocation[idx];
899 sym = *ptr->sym_ptr_ptr;
900 src_rel = outbound_relocs + idx;
902 /* The address of an ELF reloc is section relative for an object
903 file, and absolute for an executable file or shared library.
904 The address of a BFD reloc is always section relative. */
905 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
906 dst_rel.r_offset = ptr->address;
908 dst_rel.r_offset = ptr->address + sec->vma;
912 else if (bfd_is_abs_section (sym->section) && sym->value == 0)
917 n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
926 if ((*ptr->sym_ptr_ptr)->the_bfd != NULL
927 && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
928 && ! _bfd_elf_validate_reloc (abfd, ptr))
934 dst_rel.r_info = ELF_R_INFO (n, ptr->howto->type);
936 elf_swap_reloc_out (abfd, &dst_rel, src_rel);
941 /* Write out the program headers. */
944 elf_write_out_phdrs (abfd, phdr, count)
946 const Elf_Internal_Phdr *phdr;
951 Elf_External_Phdr extphdr;
952 elf_swap_phdr_out (abfd, phdr, &extphdr);
953 if (bfd_bwrite (&extphdr, (bfd_size_type) sizeof (Elf_External_Phdr),
954 abfd) != sizeof (Elf_External_Phdr))
961 /* Write out the section headers and the ELF file header. */
964 elf_write_shdrs_and_ehdr (abfd)
967 Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
968 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
969 Elf_External_Shdr *x_shdrp; /* Section header table, external form */
970 Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
974 i_ehdrp = elf_elfheader (abfd);
975 i_shdrp = elf_elfsections (abfd);
977 /* swap the header before spitting it out... */
980 elf_debug_file (i_ehdrp);
982 elf_swap_ehdr_out (abfd, i_ehdrp, &x_ehdr);
983 amt = sizeof (x_ehdr);
984 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
985 || bfd_bwrite ((PTR) & x_ehdr, amt, abfd) != amt)
988 /* at this point we've concocted all the ELF sections... */
989 amt = sizeof (*x_shdrp) * i_ehdrp->e_shnum;
990 x_shdrp = (Elf_External_Shdr *) bfd_alloc (abfd, amt);
994 for (count = 0; count < i_ehdrp->e_shnum; count++)
997 elf_debug_section (count, i_shdrp[count]);
999 elf_swap_shdr_out (abfd, i_shdrp[count], x_shdrp + count);
1001 amt = i_ehdrp->e_shnum;
1002 amt *= sizeof (*x_shdrp);
1003 if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_shoff, SEEK_SET) != 0
1004 || bfd_bwrite ((PTR) x_shdrp, amt, abfd) != amt)
1007 /* need to dump the string table too... */
1013 elf_slurp_symbol_table (abfd, symptrs, dynamic)
1015 asymbol **symptrs; /* Buffer for generated bfd symbols */
1018 Elf_Internal_Shdr *hdr;
1019 Elf_Internal_Shdr *verhdr;
1020 unsigned long symcount; /* Number of external ELF symbols */
1021 elf_symbol_type *sym; /* Pointer to current bfd symbol */
1022 elf_symbol_type *symbase; /* Buffer for generated bfd symbols */
1023 Elf_Internal_Sym i_sym;
1024 Elf_External_Sym *x_symp = NULL;
1025 Elf_External_Versym *x_versymp = NULL;
1028 /* Read each raw ELF symbol, converting from external ELF form to
1029 internal ELF form, and then using the information to create a
1030 canonical bfd symbol table entry.
1032 Note that we allocate the initial bfd canonical symbol buffer
1033 based on a one-to-one mapping of the ELF symbols to canonical
1034 symbols. We actually use all the ELF symbols, so there will be no
1035 space left over at the end. When we have all the symbols, we
1036 build the caller's pointer vector. */
1040 hdr = &elf_tdata (abfd)->symtab_hdr;
1045 hdr = &elf_tdata (abfd)->dynsymtab_hdr;
1046 if (elf_dynversym (abfd) == 0)
1049 verhdr = &elf_tdata (abfd)->dynversym_hdr;
1050 if ((elf_tdata (abfd)->dynverdef_section != 0
1051 && elf_tdata (abfd)->verdef == NULL)
1052 || (elf_tdata (abfd)->dynverref_section != 0
1053 && elf_tdata (abfd)->verref == NULL))
1055 if (! _bfd_elf_slurp_version_tables (abfd))
1060 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0)
1063 symcount = hdr->sh_size / sizeof (Elf_External_Sym);
1066 sym = symbase = NULL;
1071 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0)
1075 amt *= sizeof (elf_symbol_type);
1076 symbase = (elf_symbol_type *) bfd_zalloc (abfd, amt);
1077 if (symbase == (elf_symbol_type *) NULL)
1081 /* Temporarily allocate room for the raw ELF symbols. */
1083 amt *= sizeof (Elf_External_Sym);
1084 x_symp = (Elf_External_Sym *) bfd_malloc (amt);
1085 if (x_symp == NULL && symcount != 0)
1088 if (bfd_bread ((PTR) x_symp, amt, abfd) != amt)
1091 /* Read the raw ELF version symbol information. */
1094 && verhdr->sh_size / sizeof (Elf_External_Versym) != symcount)
1096 (*_bfd_error_handler)
1097 (_("%s: version count (%ld) does not match symbol count (%ld)"),
1099 (long) (verhdr->sh_size / sizeof (Elf_External_Versym)),
1102 /* Slurp in the symbols without the version information,
1103 since that is more helpful than just quitting. */
1109 if (bfd_seek (abfd, verhdr->sh_offset, SEEK_SET) != 0)
1112 x_versymp = (Elf_External_Versym *) bfd_malloc (verhdr->sh_size);
1113 if (x_versymp == NULL && verhdr->sh_size != 0)
1116 if (bfd_bread ((PTR) x_versymp, verhdr->sh_size, abfd)
1121 /* Skip first symbol, which is a null dummy. */
1122 for (i = 1; i < symcount; i++)
1124 elf_swap_symbol_in (abfd, x_symp + i, &i_sym);
1125 memcpy (&sym->internal_elf_sym, &i_sym, sizeof (Elf_Internal_Sym));
1126 #ifdef ELF_KEEP_EXTSYM
1127 memcpy (&sym->native_elf_sym, x_symp + i, sizeof (Elf_External_Sym));
1129 sym->symbol.the_bfd = abfd;
1131 sym->symbol.name = bfd_elf_string_from_elf_section (abfd,
1135 sym->symbol.value = i_sym.st_value;
1137 if (i_sym.st_shndx > 0 && i_sym.st_shndx < SHN_LORESERVE)
1139 sym->symbol.section = section_from_elf_index (abfd,
1141 if (sym->symbol.section == NULL)
1143 /* This symbol is in a section for which we did not
1144 create a BFD section. Just use bfd_abs_section,
1145 although it is wrong. FIXME. */
1146 sym->symbol.section = bfd_abs_section_ptr;
1149 else if (i_sym.st_shndx == SHN_ABS)
1151 sym->symbol.section = bfd_abs_section_ptr;
1153 else if (i_sym.st_shndx == SHN_COMMON)
1155 sym->symbol.section = bfd_com_section_ptr;
1156 /* Elf puts the alignment into the `value' field, and
1157 the size into the `size' field. BFD wants to see the
1158 size in the value field, and doesn't care (at the
1159 moment) about the alignment. */
1160 sym->symbol.value = i_sym.st_size;
1162 else if (i_sym.st_shndx == SHN_UNDEF)
1164 sym->symbol.section = bfd_und_section_ptr;
1167 sym->symbol.section = bfd_abs_section_ptr;
1169 /* If this is a relocateable file, then the symbol value is
1170 already section relative. */
1171 if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
1172 sym->symbol.value -= sym->symbol.section->vma;
1174 switch (ELF_ST_BIND (i_sym.st_info))
1177 sym->symbol.flags |= BSF_LOCAL;
1180 if (i_sym.st_shndx != SHN_UNDEF
1181 && i_sym.st_shndx != SHN_COMMON)
1182 sym->symbol.flags |= BSF_GLOBAL;
1185 sym->symbol.flags |= BSF_WEAK;
1189 switch (ELF_ST_TYPE (i_sym.st_info))
1192 sym->symbol.flags |= BSF_SECTION_SYM | BSF_DEBUGGING;
1195 sym->symbol.flags |= BSF_FILE | BSF_DEBUGGING;
1198 sym->symbol.flags |= BSF_FUNCTION;
1201 sym->symbol.flags |= BSF_OBJECT;
1206 sym->symbol.flags |= BSF_DYNAMIC;
1208 if (x_versymp != NULL)
1210 Elf_Internal_Versym iversym;
1212 _bfd_elf_swap_versym_in (abfd, x_versymp + i, &iversym);
1213 sym->version = iversym.vs_vers;
1216 /* Do some backend-specific processing on this symbol. */
1218 struct elf_backend_data *ebd = get_elf_backend_data (abfd);
1219 if (ebd->elf_backend_symbol_processing)
1220 (*ebd->elf_backend_symbol_processing) (abfd, &sym->symbol);
1227 /* Do some backend-specific processing on this symbol table. */
1229 struct elf_backend_data *ebd = get_elf_backend_data (abfd);
1230 if (ebd->elf_backend_symbol_table_processing)
1231 (*ebd->elf_backend_symbol_table_processing) (abfd, symbase, symcount);
1234 /* We rely on the zalloc to clear out the final symbol entry. */
1236 symcount = sym - symbase;
1238 /* Fill in the user's symbol pointer vector if needed. */
1246 *symptrs++ = &sym->symbol;
1249 *symptrs = 0; /* Final null pointer */
1252 if (x_versymp != NULL)
1258 if (x_versymp != NULL)
1265 /* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of
1269 elf_slurp_reloc_table_from_section (abfd, asect, rel_hdr, reloc_count,
1270 relents, symbols, dynamic)
1273 Elf_Internal_Shdr *rel_hdr;
1274 bfd_size_type reloc_count;
1279 struct elf_backend_data * const ebd = get_elf_backend_data (abfd);
1280 PTR allocated = NULL;
1281 bfd_byte *native_relocs;
1286 allocated = (PTR) bfd_malloc (rel_hdr->sh_size);
1287 if (allocated == NULL)
1290 if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
1291 || (bfd_bread (allocated, rel_hdr->sh_size, abfd)
1292 != rel_hdr->sh_size))
1295 native_relocs = (bfd_byte *) allocated;
1297 entsize = rel_hdr->sh_entsize;
1298 BFD_ASSERT (entsize == sizeof (Elf_External_Rel)
1299 || entsize == sizeof (Elf_External_Rela));
1301 for (i = 0, relent = relents;
1303 i++, relent++, native_relocs += entsize)
1305 Elf_Internal_Rela rela;
1306 Elf_Internal_Rel rel;
1308 if (entsize == sizeof (Elf_External_Rela))
1309 elf_swap_reloca_in (abfd, (Elf_External_Rela *) native_relocs, &rela);
1312 elf_swap_reloc_in (abfd, (Elf_External_Rel *) native_relocs, &rel);
1313 rela.r_offset = rel.r_offset;
1314 rela.r_info = rel.r_info;
1318 /* The address of an ELF reloc is section relative for an object
1319 file, and absolute for an executable file or shared library.
1320 The address of a normal BFD reloc is always section relative,
1321 and the address of a dynamic reloc is absolute.. */
1322 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic)
1323 relent->address = rela.r_offset;
1325 relent->address = rela.r_offset - asect->vma;
1327 if (ELF_R_SYM (rela.r_info) == 0)
1328 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
1333 ps = symbols + ELF_R_SYM (rela.r_info) - 1;
1336 /* Canonicalize ELF section symbols. FIXME: Why? */
1337 if ((s->flags & BSF_SECTION_SYM) == 0)
1338 relent->sym_ptr_ptr = ps;
1340 relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
1343 relent->addend = rela.r_addend;
1345 if (entsize == sizeof (Elf_External_Rela))
1346 (*ebd->elf_info_to_howto) (abfd, relent, &rela);
1348 (*ebd->elf_info_to_howto_rel) (abfd, relent, &rel);
1351 if (allocated != NULL)
1357 if (allocated != NULL)
1362 /* Read in and swap the external relocs. */
1365 elf_slurp_reloc_table (abfd, asect, symbols, dynamic)
1371 struct bfd_elf_section_data * const d = elf_section_data (asect);
1372 Elf_Internal_Shdr *rel_hdr;
1373 Elf_Internal_Shdr *rel_hdr2;
1374 bfd_size_type reloc_count;
1375 bfd_size_type reloc_count2;
1379 if (asect->relocation != NULL)
1384 if ((asect->flags & SEC_RELOC) == 0
1385 || asect->reloc_count == 0)
1388 rel_hdr = &d->rel_hdr;
1389 reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
1390 rel_hdr2 = d->rel_hdr2;
1391 reloc_count2 = (rel_hdr2 ? NUM_SHDR_ENTRIES (rel_hdr2) : 0);
1393 BFD_ASSERT (asect->reloc_count == reloc_count + reloc_count2);
1394 BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset
1395 || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset));
1400 /* Note that ASECT->RELOC_COUNT tends not to be accurate in this
1401 case because relocations against this section may use the
1402 dynamic symbol table, and in that case bfd_section_from_shdr
1403 in elf.c does not update the RELOC_COUNT. */
1404 if (asect->_raw_size == 0)
1407 rel_hdr = &d->this_hdr;
1408 reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
1413 amt = (reloc_count + reloc_count2) * sizeof (arelent);
1414 relents = (arelent *) bfd_alloc (abfd, amt);
1415 if (relents == NULL)
1418 if (!elf_slurp_reloc_table_from_section (abfd, asect,
1419 rel_hdr, reloc_count,
1425 && !elf_slurp_reloc_table_from_section (abfd, asect,
1426 rel_hdr2, reloc_count2,
1427 relents + reloc_count,
1431 asect->relocation = relents;
1437 elf_debug_section (num, hdr)
1439 Elf_Internal_Shdr *hdr;
1441 fprintf (stderr, "\nSection#%d '%s' 0x%.8lx\n", num,
1442 hdr->bfd_section != NULL ? hdr->bfd_section->name : "",
1445 "sh_name = %ld\tsh_type = %ld\tsh_flags = %ld\n",
1446 (long) hdr->sh_name,
1447 (long) hdr->sh_type,
1448 (long) hdr->sh_flags);
1450 "sh_addr = %ld\tsh_offset = %ld\tsh_size = %ld\n",
1451 (long) hdr->sh_addr,
1452 (long) hdr->sh_offset,
1453 (long) hdr->sh_size);
1455 "sh_link = %ld\tsh_info = %ld\tsh_addralign = %ld\n",
1456 (long) hdr->sh_link,
1457 (long) hdr->sh_info,
1458 (long) hdr->sh_addralign);
1459 fprintf (stderr, "sh_entsize = %ld\n",
1460 (long) hdr->sh_entsize);
1465 elf_debug_file (ehdrp)
1466 Elf_Internal_Ehdr *ehdrp;
1468 fprintf (stderr, "e_entry = 0x%.8lx\n", (long) ehdrp->e_entry);
1469 fprintf (stderr, "e_phoff = %ld\n", (long) ehdrp->e_phoff);
1470 fprintf (stderr, "e_phnum = %ld\n", (long) ehdrp->e_phnum);
1471 fprintf (stderr, "e_phentsize = %ld\n", (long) ehdrp->e_phentsize);
1472 fprintf (stderr, "e_shoff = %ld\n", (long) ehdrp->e_shoff);
1473 fprintf (stderr, "e_shnum = %ld\n", (long) ehdrp->e_shnum);
1474 fprintf (stderr, "e_shentsize = %ld\n", (long) ehdrp->e_shentsize);
1478 elf_symbol_flags (flags)
1481 static char buffer[1024];
1484 if (flags & BSF_LOCAL)
1485 strcat (buffer, " local");
1487 if (flags & BSF_GLOBAL)
1488 strcat (buffer, " global");
1490 if (flags & BSF_DEBUGGING)
1491 strcat (buffer, " debug");
1493 if (flags & BSF_FUNCTION)
1494 strcat (buffer, " function");
1496 if (flags & BSF_KEEP)
1497 strcat (buffer, " keep");
1499 if (flags & BSF_KEEP_G)
1500 strcat (buffer, " keep_g");
1502 if (flags & BSF_WEAK)
1503 strcat (buffer, " weak");
1505 if (flags & BSF_SECTION_SYM)
1506 strcat (buffer, " section-sym");
1508 if (flags & BSF_OLD_COMMON)
1509 strcat (buffer, " old-common");
1511 if (flags & BSF_NOT_AT_END)
1512 strcat (buffer, " not-at-end");
1514 if (flags & BSF_CONSTRUCTOR)
1515 strcat (buffer, " constructor");
1517 if (flags & BSF_WARNING)
1518 strcat (buffer, " warning");
1520 if (flags & BSF_INDIRECT)
1521 strcat (buffer, " indirect");
1523 if (flags & BSF_FILE)
1524 strcat (buffer, " file");
1526 if (flags & DYNAMIC)
1527 strcat (buffer, " dynamic");
1529 if (flags & ~(BSF_LOCAL
1544 strcat (buffer, " unknown-bits");
1550 #include "elfcore.h"
1551 #include "elflink.h"
1553 /* Size-dependent data and functions. */
1554 const struct elf_size_info NAME(_bfd_elf,size_info) = {
1555 sizeof (Elf_External_Ehdr),
1556 sizeof (Elf_External_Phdr),
1557 sizeof (Elf_External_Shdr),
1558 sizeof (Elf_External_Rel),
1559 sizeof (Elf_External_Rela),
1560 sizeof (Elf_External_Sym),
1561 sizeof (Elf_External_Dyn),
1562 sizeof (Elf_External_Note),
1565 ARCH_SIZE, FILE_ALIGN,
1566 ELFCLASS, EV_CURRENT,
1567 elf_write_out_phdrs,
1568 elf_write_shdrs_and_ehdr,
1570 elf_swap_symbol_out,
1571 elf_slurp_reloc_table,
1572 elf_slurp_symbol_table,