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252b5132 | 1 | /* ELF executable support for BFD. |
7898deda | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
3db64b00 AM |
3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
4 | Free Software Foundation, Inc. | |
252b5132 RH |
5 | |
6 | Written by Fred Fish @ Cygnus Support, from information published | |
7 | in "UNIX System V Release 4, Programmers Guide: ANSI C and | |
8 | Programming Support Tools". Sufficient support for gdb. | |
9 | ||
10 | Rewritten by Mark Eichin @ Cygnus Support, from information | |
11 | published in "System V Application Binary Interface", chapters 4 | |
12 | and 5, as well as the various "Processor Supplement" documents | |
13 | derived from it. Added support for assembler and other object file | |
14 | utilities. Further work done by Ken Raeburn (Cygnus Support), Michael | |
15 | Meissner (Open Software Foundation), and Peter Hoogenboom (University | |
16 | of Utah) to finish and extend this. | |
17 | ||
18 | This file is part of BFD, the Binary File Descriptor library. | |
19 | ||
20 | This program is free software; you can redistribute it and/or modify | |
21 | it under the terms of the GNU General Public License as published by | |
22 | the Free Software Foundation; either version 2 of the License, or | |
23 | (at your option) any later version. | |
24 | ||
25 | This program is distributed in the hope that it will be useful, | |
26 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | GNU General Public License for more details. | |
29 | ||
30 | You should have received a copy of the GNU General Public License | |
31 | along with this program; if not, write to the Free Software | |
3e110533 | 32 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 RH |
33 | |
34 | /* Problems and other issues to resolve. | |
35 | ||
36 | (1) BFD expects there to be some fixed number of "sections" in | |
0560d0f7 | 37 | the object file. I.E. there is a "section_count" variable in the |
252b5132 RH |
38 | bfd structure which contains the number of sections. However, ELF |
39 | supports multiple "views" of a file. In particular, with current | |
40 | implementations, executable files typically have two tables, a | |
41 | program header table and a section header table, both of which | |
42 | partition the executable. | |
43 | ||
44 | In ELF-speak, the "linking view" of the file uses the section header | |
45 | table to access "sections" within the file, and the "execution view" | |
46 | uses the program header table to access "segments" within the file. | |
47 | "Segments" typically may contain all the data from one or more | |
48 | "sections". | |
49 | ||
50 | Note that the section header table is optional in ELF executables, | |
51 | but it is this information that is most useful to gdb. If the | |
52 | section header table is missing, then gdb should probably try | |
53 | to make do with the program header table. (FIXME) | |
54 | ||
55 | (2) The code in this file is compiled twice, once in 32-bit mode and | |
56 | once in 64-bit mode. More of it should be made size-independent | |
57 | and moved into elf.c. | |
58 | ||
59 | (3) ELF section symbols are handled rather sloppily now. This should | |
60 | be cleaned up, and ELF section symbols reconciled with BFD section | |
61 | symbols. | |
62 | ||
63 | (4) We need a published spec for 64-bit ELF. We've got some stuff here | |
64 | that we're using for SPARC V9 64-bit chips, but don't assume that | |
65 | it's cast in stone. | |
66 | */ | |
67 | ||
252b5132 | 68 | #include "sysdep.h" |
3db64b00 | 69 | #include "bfd.h" |
210ba1e8 | 70 | #include "libiberty.h" |
252b5132 RH |
71 | #include "bfdlink.h" |
72 | #include "libbfd.h" | |
73 | #include "elf-bfd.h" | |
74 | ||
75 | /* Renaming structures, typedefs, macros and functions to be size-specific. */ | |
76 | #define Elf_External_Ehdr NAME(Elf,External_Ehdr) | |
77 | #define Elf_External_Sym NAME(Elf,External_Sym) | |
78 | #define Elf_External_Shdr NAME(Elf,External_Shdr) | |
79 | #define Elf_External_Phdr NAME(Elf,External_Phdr) | |
80 | #define Elf_External_Rel NAME(Elf,External_Rel) | |
81 | #define Elf_External_Rela NAME(Elf,External_Rela) | |
82 | #define Elf_External_Dyn NAME(Elf,External_Dyn) | |
83 | ||
84 | #define elf_core_file_failing_command NAME(bfd_elf,core_file_failing_command) | |
85 | #define elf_core_file_failing_signal NAME(bfd_elf,core_file_failing_signal) | |
86 | #define elf_core_file_matches_executable_p \ | |
87 | NAME(bfd_elf,core_file_matches_executable_p) | |
88 | #define elf_object_p NAME(bfd_elf,object_p) | |
89 | #define elf_core_file_p NAME(bfd_elf,core_file_p) | |
90 | #define elf_get_symtab_upper_bound NAME(bfd_elf,get_symtab_upper_bound) | |
91 | #define elf_get_dynamic_symtab_upper_bound \ | |
92 | NAME(bfd_elf,get_dynamic_symtab_upper_bound) | |
93 | #define elf_swap_reloc_in NAME(bfd_elf,swap_reloc_in) | |
94 | #define elf_swap_reloca_in NAME(bfd_elf,swap_reloca_in) | |
95 | #define elf_swap_reloc_out NAME(bfd_elf,swap_reloc_out) | |
96 | #define elf_swap_reloca_out NAME(bfd_elf,swap_reloca_out) | |
97 | #define elf_swap_symbol_in NAME(bfd_elf,swap_symbol_in) | |
98 | #define elf_swap_symbol_out NAME(bfd_elf,swap_symbol_out) | |
99 | #define elf_swap_phdr_in NAME(bfd_elf,swap_phdr_in) | |
100 | #define elf_swap_phdr_out NAME(bfd_elf,swap_phdr_out) | |
101 | #define elf_swap_dyn_in NAME(bfd_elf,swap_dyn_in) | |
102 | #define elf_swap_dyn_out NAME(bfd_elf,swap_dyn_out) | |
103 | #define elf_get_reloc_upper_bound NAME(bfd_elf,get_reloc_upper_bound) | |
104 | #define elf_canonicalize_reloc NAME(bfd_elf,canonicalize_reloc) | |
105 | #define elf_slurp_symbol_table NAME(bfd_elf,slurp_symbol_table) | |
6cee3f79 | 106 | #define elf_canonicalize_symtab NAME(bfd_elf,canonicalize_symtab) |
252b5132 RH |
107 | #define elf_canonicalize_dynamic_symtab \ |
108 | NAME(bfd_elf,canonicalize_dynamic_symtab) | |
4c45e5c9 JJ |
109 | #define elf_get_synthetic_symtab \ |
110 | NAME(bfd_elf,get_synthetic_symtab) | |
252b5132 RH |
111 | #define elf_make_empty_symbol NAME(bfd_elf,make_empty_symbol) |
112 | #define elf_get_symbol_info NAME(bfd_elf,get_symbol_info) | |
113 | #define elf_get_lineno NAME(bfd_elf,get_lineno) | |
114 | #define elf_set_arch_mach NAME(bfd_elf,set_arch_mach) | |
115 | #define elf_find_nearest_line NAME(bfd_elf,find_nearest_line) | |
116 | #define elf_sizeof_headers NAME(bfd_elf,sizeof_headers) | |
117 | #define elf_set_section_contents NAME(bfd_elf,set_section_contents) | |
118 | #define elf_no_info_to_howto NAME(bfd_elf,no_info_to_howto) | |
119 | #define elf_no_info_to_howto_rel NAME(bfd_elf,no_info_to_howto_rel) | |
120 | #define elf_find_section NAME(bfd_elf,find_section) | |
252b5132 RH |
121 | #define elf_write_shdrs_and_ehdr NAME(bfd_elf,write_shdrs_and_ehdr) |
122 | #define elf_write_out_phdrs NAME(bfd_elf,write_out_phdrs) | |
b9f66672 JL |
123 | #define elf_write_relocs NAME(bfd_elf,write_relocs) |
124 | #define elf_slurp_reloc_table NAME(bfd_elf,slurp_reloc_table) | |
252b5132 RH |
125 | |
126 | #if ARCH_SIZE == 64 | |
127 | #define ELF_R_INFO(X,Y) ELF64_R_INFO(X,Y) | |
128 | #define ELF_R_SYM(X) ELF64_R_SYM(X) | |
129 | #define ELF_R_TYPE(X) ELF64_R_TYPE(X) | |
130 | #define ELFCLASS ELFCLASS64 | |
131 | #define FILE_ALIGN 8 | |
132 | #define LOG_FILE_ALIGN 3 | |
133 | #endif | |
134 | #if ARCH_SIZE == 32 | |
135 | #define ELF_R_INFO(X,Y) ELF32_R_INFO(X,Y) | |
136 | #define ELF_R_SYM(X) ELF32_R_SYM(X) | |
137 | #define ELF_R_TYPE(X) ELF32_R_TYPE(X) | |
138 | #define ELFCLASS ELFCLASS32 | |
139 | #define FILE_ALIGN 4 | |
140 | #define LOG_FILE_ALIGN 2 | |
141 | #endif | |
142 | ||
e460dd0d | 143 | #if DEBUG & 2 |
268b6b39 | 144 | static void elf_debug_section (int, Elf_Internal_Shdr *); |
e460dd0d AM |
145 | #endif |
146 | #if DEBUG & 1 | |
268b6b39 | 147 | static void elf_debug_file (Elf_Internal_Ehdr *); |
252b5132 RH |
148 | #endif |
149 | \f | |
150 | /* Structure swapping routines */ | |
151 | ||
152 | /* Should perhaps use put_offset, put_word, etc. For now, the two versions | |
153 | can be handled by explicitly specifying 32 bits or "the long type". */ | |
154 | #if ARCH_SIZE == 64 | |
dc810e39 AM |
155 | #define H_PUT_WORD H_PUT_64 |
156 | #define H_PUT_SIGNED_WORD H_PUT_S64 | |
157 | #define H_GET_WORD H_GET_64 | |
158 | #define H_GET_SIGNED_WORD H_GET_S64 | |
252b5132 RH |
159 | #endif |
160 | #if ARCH_SIZE == 32 | |
dc810e39 AM |
161 | #define H_PUT_WORD H_PUT_32 |
162 | #define H_PUT_SIGNED_WORD H_PUT_S32 | |
163 | #define H_GET_WORD H_GET_32 | |
164 | #define H_GET_SIGNED_WORD H_GET_S32 | |
252b5132 RH |
165 | #endif |
166 | ||
167 | /* Translate an ELF symbol in external format into an ELF symbol in internal | |
3e932841 | 168 | format. */ |
252b5132 | 169 | |
8384fb8f | 170 | bfd_boolean |
268b6b39 AM |
171 | elf_swap_symbol_in (bfd *abfd, |
172 | const void *psrc, | |
173 | const void *pshn, | |
174 | Elf_Internal_Sym *dst) | |
252b5132 | 175 | { |
268b6b39 AM |
176 | const Elf_External_Sym *src = psrc; |
177 | const Elf_External_Sym_Shndx *shndx = pshn; | |
86dc0f79 RH |
178 | int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma; |
179 | ||
dc810e39 | 180 | dst->st_name = H_GET_32 (abfd, src->st_name); |
86dc0f79 | 181 | if (signed_vma) |
dc810e39 | 182 | dst->st_value = H_GET_SIGNED_WORD (abfd, src->st_value); |
86dc0f79 | 183 | else |
dc810e39 AM |
184 | dst->st_value = H_GET_WORD (abfd, src->st_value); |
185 | dst->st_size = H_GET_WORD (abfd, src->st_size); | |
186 | dst->st_info = H_GET_8 (abfd, src->st_info); | |
187 | dst->st_other = H_GET_8 (abfd, src->st_other); | |
188 | dst->st_shndx = H_GET_16 (abfd, src->st_shndx); | |
9ad5cbcf AM |
189 | if (dst->st_shndx == SHN_XINDEX) |
190 | { | |
191 | if (shndx == NULL) | |
8384fb8f | 192 | return FALSE; |
9ad5cbcf AM |
193 | dst->st_shndx = H_GET_32 (abfd, shndx->est_shndx); |
194 | } | |
8384fb8f | 195 | return TRUE; |
252b5132 RH |
196 | } |
197 | ||
198 | /* Translate an ELF symbol in internal format into an ELF symbol in external | |
3e932841 | 199 | format. */ |
252b5132 RH |
200 | |
201 | void | |
268b6b39 AM |
202 | elf_swap_symbol_out (bfd *abfd, |
203 | const Elf_Internal_Sym *src, | |
204 | void *cdst, | |
205 | void *shndx) | |
252b5132 | 206 | { |
9ad5cbcf | 207 | unsigned int tmp; |
268b6b39 | 208 | Elf_External_Sym *dst = cdst; |
dc810e39 AM |
209 | H_PUT_32 (abfd, src->st_name, dst->st_name); |
210 | H_PUT_WORD (abfd, src->st_value, dst->st_value); | |
211 | H_PUT_WORD (abfd, src->st_size, dst->st_size); | |
212 | H_PUT_8 (abfd, src->st_info, dst->st_info); | |
213 | H_PUT_8 (abfd, src->st_other, dst->st_other); | |
9ad5cbcf AM |
214 | tmp = src->st_shndx; |
215 | if (tmp > SHN_HIRESERVE) | |
216 | { | |
217 | if (shndx == NULL) | |
218 | abort (); | |
219 | H_PUT_32 (abfd, tmp, shndx); | |
220 | tmp = SHN_XINDEX; | |
221 | } | |
222 | H_PUT_16 (abfd, tmp, dst->st_shndx); | |
252b5132 RH |
223 | } |
224 | ||
252b5132 | 225 | /* Translate an ELF file header in external format into an ELF file header in |
3e932841 | 226 | internal format. */ |
252b5132 RH |
227 | |
228 | static void | |
268b6b39 AM |
229 | elf_swap_ehdr_in (bfd *abfd, |
230 | const Elf_External_Ehdr *src, | |
231 | Elf_Internal_Ehdr *dst) | |
252b5132 | 232 | { |
448cafa4 | 233 | int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma; |
252b5132 | 234 | memcpy (dst->e_ident, src->e_ident, EI_NIDENT); |
dc810e39 AM |
235 | dst->e_type = H_GET_16 (abfd, src->e_type); |
236 | dst->e_machine = H_GET_16 (abfd, src->e_machine); | |
237 | dst->e_version = H_GET_32 (abfd, src->e_version); | |
448cafa4 | 238 | if (signed_vma) |
dc810e39 | 239 | dst->e_entry = H_GET_SIGNED_WORD (abfd, src->e_entry); |
448cafa4 | 240 | else |
dc810e39 AM |
241 | dst->e_entry = H_GET_WORD (abfd, src->e_entry); |
242 | dst->e_phoff = H_GET_WORD (abfd, src->e_phoff); | |
243 | dst->e_shoff = H_GET_WORD (abfd, src->e_shoff); | |
244 | dst->e_flags = H_GET_32 (abfd, src->e_flags); | |
245 | dst->e_ehsize = H_GET_16 (abfd, src->e_ehsize); | |
246 | dst->e_phentsize = H_GET_16 (abfd, src->e_phentsize); | |
247 | dst->e_phnum = H_GET_16 (abfd, src->e_phnum); | |
248 | dst->e_shentsize = H_GET_16 (abfd, src->e_shentsize); | |
249 | dst->e_shnum = H_GET_16 (abfd, src->e_shnum); | |
250 | dst->e_shstrndx = H_GET_16 (abfd, src->e_shstrndx); | |
252b5132 RH |
251 | } |
252 | ||
253 | /* Translate an ELF file header in internal format into an ELF file header in | |
3e932841 | 254 | external format. */ |
252b5132 RH |
255 | |
256 | static void | |
268b6b39 AM |
257 | elf_swap_ehdr_out (bfd *abfd, |
258 | const Elf_Internal_Ehdr *src, | |
259 | Elf_External_Ehdr *dst) | |
252b5132 | 260 | { |
5732c114 | 261 | unsigned int tmp; |
448cafa4 | 262 | int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma; |
252b5132 | 263 | memcpy (dst->e_ident, src->e_ident, EI_NIDENT); |
3e932841 | 264 | /* note that all elements of dst are *arrays of unsigned char* already... */ |
dc810e39 AM |
265 | H_PUT_16 (abfd, src->e_type, dst->e_type); |
266 | H_PUT_16 (abfd, src->e_machine, dst->e_machine); | |
267 | H_PUT_32 (abfd, src->e_version, dst->e_version); | |
448cafa4 | 268 | if (signed_vma) |
dc810e39 | 269 | H_PUT_SIGNED_WORD (abfd, src->e_entry, dst->e_entry); |
448cafa4 | 270 | else |
dc810e39 AM |
271 | H_PUT_WORD (abfd, src->e_entry, dst->e_entry); |
272 | H_PUT_WORD (abfd, src->e_phoff, dst->e_phoff); | |
273 | H_PUT_WORD (abfd, src->e_shoff, dst->e_shoff); | |
274 | H_PUT_32 (abfd, src->e_flags, dst->e_flags); | |
275 | H_PUT_16 (abfd, src->e_ehsize, dst->e_ehsize); | |
276 | H_PUT_16 (abfd, src->e_phentsize, dst->e_phentsize); | |
277 | H_PUT_16 (abfd, src->e_phnum, dst->e_phnum); | |
278 | H_PUT_16 (abfd, src->e_shentsize, dst->e_shentsize); | |
5732c114 AM |
279 | tmp = src->e_shnum; |
280 | if (tmp >= SHN_LORESERVE) | |
281 | tmp = SHN_UNDEF; | |
282 | H_PUT_16 (abfd, tmp, dst->e_shnum); | |
283 | tmp = src->e_shstrndx; | |
284 | if (tmp >= SHN_LORESERVE) | |
285 | tmp = SHN_XINDEX; | |
286 | H_PUT_16 (abfd, tmp, dst->e_shstrndx); | |
252b5132 RH |
287 | } |
288 | ||
252b5132 | 289 | /* Translate an ELF section header table entry in external format into an |
3e932841 | 290 | ELF section header table entry in internal format. */ |
252b5132 RH |
291 | |
292 | static void | |
268b6b39 AM |
293 | elf_swap_shdr_in (bfd *abfd, |
294 | const Elf_External_Shdr *src, | |
295 | Elf_Internal_Shdr *dst) | |
252b5132 | 296 | { |
86dc0f79 RH |
297 | int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma; |
298 | ||
dc810e39 AM |
299 | dst->sh_name = H_GET_32 (abfd, src->sh_name); |
300 | dst->sh_type = H_GET_32 (abfd, src->sh_type); | |
301 | dst->sh_flags = H_GET_WORD (abfd, src->sh_flags); | |
86dc0f79 | 302 | if (signed_vma) |
dc810e39 | 303 | dst->sh_addr = H_GET_SIGNED_WORD (abfd, src->sh_addr); |
86dc0f79 | 304 | else |
dc810e39 AM |
305 | dst->sh_addr = H_GET_WORD (abfd, src->sh_addr); |
306 | dst->sh_offset = H_GET_WORD (abfd, src->sh_offset); | |
307 | dst->sh_size = H_GET_WORD (abfd, src->sh_size); | |
308 | dst->sh_link = H_GET_32 (abfd, src->sh_link); | |
309 | dst->sh_info = H_GET_32 (abfd, src->sh_info); | |
310 | dst->sh_addralign = H_GET_WORD (abfd, src->sh_addralign); | |
311 | dst->sh_entsize = H_GET_WORD (abfd, src->sh_entsize); | |
252b5132 RH |
312 | dst->bfd_section = NULL; |
313 | dst->contents = NULL; | |
314 | } | |
315 | ||
316 | /* Translate an ELF section header table entry in internal format into an | |
3e932841 | 317 | ELF section header table entry in external format. */ |
252b5132 RH |
318 | |
319 | static void | |
268b6b39 AM |
320 | elf_swap_shdr_out (bfd *abfd, |
321 | const Elf_Internal_Shdr *src, | |
322 | Elf_External_Shdr *dst) | |
252b5132 | 323 | { |
3e932841 | 324 | /* note that all elements of dst are *arrays of unsigned char* already... */ |
dc810e39 AM |
325 | H_PUT_32 (abfd, src->sh_name, dst->sh_name); |
326 | H_PUT_32 (abfd, src->sh_type, dst->sh_type); | |
327 | H_PUT_WORD (abfd, src->sh_flags, dst->sh_flags); | |
328 | H_PUT_WORD (abfd, src->sh_addr, dst->sh_addr); | |
329 | H_PUT_WORD (abfd, src->sh_offset, dst->sh_offset); | |
330 | H_PUT_WORD (abfd, src->sh_size, dst->sh_size); | |
331 | H_PUT_32 (abfd, src->sh_link, dst->sh_link); | |
332 | H_PUT_32 (abfd, src->sh_info, dst->sh_info); | |
333 | H_PUT_WORD (abfd, src->sh_addralign, dst->sh_addralign); | |
334 | H_PUT_WORD (abfd, src->sh_entsize, dst->sh_entsize); | |
252b5132 RH |
335 | } |
336 | ||
252b5132 | 337 | /* Translate an ELF program header table entry in external format into an |
3e932841 | 338 | ELF program header table entry in internal format. */ |
252b5132 RH |
339 | |
340 | void | |
268b6b39 AM |
341 | elf_swap_phdr_in (bfd *abfd, |
342 | const Elf_External_Phdr *src, | |
343 | Elf_Internal_Phdr *dst) | |
252b5132 | 344 | { |
86dc0f79 RH |
345 | int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma; |
346 | ||
dc810e39 AM |
347 | dst->p_type = H_GET_32 (abfd, src->p_type); |
348 | dst->p_flags = H_GET_32 (abfd, src->p_flags); | |
349 | dst->p_offset = H_GET_WORD (abfd, src->p_offset); | |
86dc0f79 RH |
350 | if (signed_vma) |
351 | { | |
dc810e39 AM |
352 | dst->p_vaddr = H_GET_SIGNED_WORD (abfd, src->p_vaddr); |
353 | dst->p_paddr = H_GET_SIGNED_WORD (abfd, src->p_paddr); | |
86dc0f79 RH |
354 | } |
355 | else | |
356 | { | |
dc810e39 AM |
357 | dst->p_vaddr = H_GET_WORD (abfd, src->p_vaddr); |
358 | dst->p_paddr = H_GET_WORD (abfd, src->p_paddr); | |
86dc0f79 | 359 | } |
dc810e39 AM |
360 | dst->p_filesz = H_GET_WORD (abfd, src->p_filesz); |
361 | dst->p_memsz = H_GET_WORD (abfd, src->p_memsz); | |
362 | dst->p_align = H_GET_WORD (abfd, src->p_align); | |
252b5132 RH |
363 | } |
364 | ||
365 | void | |
268b6b39 AM |
366 | elf_swap_phdr_out (bfd *abfd, |
367 | const Elf_Internal_Phdr *src, | |
368 | Elf_External_Phdr *dst) | |
252b5132 | 369 | { |
3e932841 | 370 | /* note that all elements of dst are *arrays of unsigned char* already... */ |
dc810e39 AM |
371 | H_PUT_32 (abfd, src->p_type, dst->p_type); |
372 | H_PUT_WORD (abfd, src->p_offset, dst->p_offset); | |
373 | H_PUT_WORD (abfd, src->p_vaddr, dst->p_vaddr); | |
374 | H_PUT_WORD (abfd, src->p_paddr, dst->p_paddr); | |
375 | H_PUT_WORD (abfd, src->p_filesz, dst->p_filesz); | |
376 | H_PUT_WORD (abfd, src->p_memsz, dst->p_memsz); | |
377 | H_PUT_32 (abfd, src->p_flags, dst->p_flags); | |
378 | H_PUT_WORD (abfd, src->p_align, dst->p_align); | |
252b5132 RH |
379 | } |
380 | ||
3e932841 | 381 | /* Translate an ELF reloc from external format to internal format. */ |
947216bf | 382 | void |
268b6b39 AM |
383 | elf_swap_reloc_in (bfd *abfd, |
384 | const bfd_byte *s, | |
385 | Elf_Internal_Rela *dst) | |
252b5132 | 386 | { |
947216bf | 387 | const Elf_External_Rel *src = (const Elf_External_Rel *) s; |
dc810e39 AM |
388 | dst->r_offset = H_GET_WORD (abfd, src->r_offset); |
389 | dst->r_info = H_GET_WORD (abfd, src->r_info); | |
947216bf | 390 | dst->r_addend = 0; |
252b5132 RH |
391 | } |
392 | ||
947216bf | 393 | void |
268b6b39 AM |
394 | elf_swap_reloca_in (bfd *abfd, |
395 | const bfd_byte *s, | |
396 | Elf_Internal_Rela *dst) | |
252b5132 | 397 | { |
947216bf | 398 | const Elf_External_Rela *src = (const Elf_External_Rela *) s; |
dc810e39 AM |
399 | dst->r_offset = H_GET_WORD (abfd, src->r_offset); |
400 | dst->r_info = H_GET_WORD (abfd, src->r_info); | |
401 | dst->r_addend = H_GET_SIGNED_WORD (abfd, src->r_addend); | |
252b5132 RH |
402 | } |
403 | ||
3e932841 | 404 | /* Translate an ELF reloc from internal format to external format. */ |
947216bf | 405 | void |
268b6b39 AM |
406 | elf_swap_reloc_out (bfd *abfd, |
407 | const Elf_Internal_Rela *src, | |
408 | bfd_byte *d) | |
252b5132 | 409 | { |
947216bf | 410 | Elf_External_Rel *dst = (Elf_External_Rel *) d; |
dc810e39 AM |
411 | H_PUT_WORD (abfd, src->r_offset, dst->r_offset); |
412 | H_PUT_WORD (abfd, src->r_info, dst->r_info); | |
252b5132 RH |
413 | } |
414 | ||
947216bf | 415 | void |
268b6b39 AM |
416 | elf_swap_reloca_out (bfd *abfd, |
417 | const Elf_Internal_Rela *src, | |
418 | bfd_byte *d) | |
252b5132 | 419 | { |
947216bf | 420 | Elf_External_Rela *dst = (Elf_External_Rela *) d; |
dc810e39 AM |
421 | H_PUT_WORD (abfd, src->r_offset, dst->r_offset); |
422 | H_PUT_WORD (abfd, src->r_info, dst->r_info); | |
423 | H_PUT_SIGNED_WORD (abfd, src->r_addend, dst->r_addend); | |
252b5132 RH |
424 | } |
425 | ||
268b6b39 AM |
426 | void |
427 | elf_swap_dyn_in (bfd *abfd, | |
428 | const void *p, | |
429 | Elf_Internal_Dyn *dst) | |
252b5132 | 430 | { |
268b6b39 | 431 | const Elf_External_Dyn *src = p; |
252b5132 | 432 | |
dc810e39 AM |
433 | dst->d_tag = H_GET_WORD (abfd, src->d_tag); |
434 | dst->d_un.d_val = H_GET_WORD (abfd, src->d_un.d_val); | |
252b5132 RH |
435 | } |
436 | ||
268b6b39 AM |
437 | void |
438 | elf_swap_dyn_out (bfd *abfd, | |
439 | const Elf_Internal_Dyn *src, | |
440 | void *p) | |
252b5132 | 441 | { |
268b6b39 | 442 | Elf_External_Dyn *dst = p; |
c7ac6ff8 | 443 | |
dc810e39 AM |
444 | H_PUT_WORD (abfd, src->d_tag, dst->d_tag); |
445 | H_PUT_WORD (abfd, src->d_un.d_val, dst->d_un.d_val); | |
252b5132 RH |
446 | } |
447 | \f | |
448 | /* ELF .o/exec file reading */ | |
449 | ||
252b5132 RH |
450 | /* Begin processing a given object. |
451 | ||
452 | First we validate the file by reading in the ELF header and checking | |
453 | the magic number. */ | |
454 | ||
268b6b39 AM |
455 | static inline bfd_boolean |
456 | elf_file_p (Elf_External_Ehdr *x_ehdrp) | |
252b5132 RH |
457 | { |
458 | return ((x_ehdrp->e_ident[EI_MAG0] == ELFMAG0) | |
459 | && (x_ehdrp->e_ident[EI_MAG1] == ELFMAG1) | |
460 | && (x_ehdrp->e_ident[EI_MAG2] == ELFMAG2) | |
461 | && (x_ehdrp->e_ident[EI_MAG3] == ELFMAG3)); | |
462 | } | |
463 | ||
5e1b4a6d NC |
464 | /* Determines if a given section index is valid. */ |
465 | ||
466 | static inline bfd_boolean | |
467 | valid_section_index_p (unsigned index, unsigned num_sections) | |
468 | { | |
469 | /* Note: We allow SHN_UNDEF as a valid section index. */ | |
470 | if (index < SHN_LORESERVE || index > SHN_HIRESERVE) | |
471 | return index < num_sections; | |
472 | ||
473 | /* We disallow the use of reserved indcies, except for those | |
474 | with OS or Application specific meaning. The test make use | |
475 | of the knowledge that: | |
476 | SHN_LORESERVE == SHN_LOPROC | |
477 | and | |
478 | SHN_HIPROC == SHN_LOOS - 1 */ | |
479 | /* XXX - Should we allow SHN_XINDEX as a valid index here ? */ | |
480 | return (index >= SHN_LOPROC && index <= SHN_HIOS); | |
481 | } | |
482 | ||
252b5132 RH |
483 | /* Check to see if the file associated with ABFD matches the target vector |
484 | that ABFD points to. | |
485 | ||
486 | Note that we may be called several times with the same ABFD, but different | |
487 | target vectors, most of which will not match. We have to avoid leaving | |
488 | any side effects in ABFD, or any data it points to (like tdata), if the | |
489 | file does not match the target vector. */ | |
490 | ||
491 | const bfd_target * | |
268b6b39 | 492 | elf_object_p (bfd *abfd) |
252b5132 RH |
493 | { |
494 | Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ | |
495 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
496 | Elf_External_Shdr x_shdr; /* Section header table entry, external form */ | |
5732c114 | 497 | Elf_Internal_Shdr i_shdr; |
ed591155 | 498 | Elf_Internal_Shdr *i_shdrp; /* Section header table, internal form */ |
252b5132 | 499 | unsigned int shindex; |
9c5bfbb7 | 500 | const struct elf_backend_data *ebd; |
ed591155 | 501 | struct bfd_preserve preserve; |
252b5132 | 502 | asection *s; |
dc810e39 | 503 | bfd_size_type amt; |
d1036acb L |
504 | const bfd_target *target; |
505 | const bfd_target * const *target_ptr; | |
252b5132 | 506 | |
e84d6fca | 507 | preserve.marker = NULL; |
a17cc40f | 508 | |
252b5132 RH |
509 | /* Read in the ELF header in external format. */ |
510 | ||
268b6b39 | 511 | if (bfd_bread (&x_ehdr, sizeof (x_ehdr), abfd) != sizeof (x_ehdr)) |
252b5132 RH |
512 | { |
513 | if (bfd_get_error () != bfd_error_system_call) | |
514 | goto got_wrong_format_error; | |
515 | else | |
516 | goto got_no_match; | |
517 | } | |
518 | ||
519 | /* Now check to see if we have a valid ELF file, and one that BFD can | |
520 | make use of. The magic number must match, the address size ('class') | |
521 | and byte-swapping must match our XVEC entry, and it must have a | |
522 | section header table (FIXME: See comments re sections at top of this | |
3e932841 | 523 | file). */ |
252b5132 | 524 | |
82e51918 AM |
525 | if (! elf_file_p (&x_ehdr) |
526 | || x_ehdr.e_ident[EI_VERSION] != EV_CURRENT | |
527 | || x_ehdr.e_ident[EI_CLASS] != ELFCLASS) | |
252b5132 RH |
528 | goto got_wrong_format_error; |
529 | ||
530 | /* Check that file's byte order matches xvec's */ | |
531 | switch (x_ehdr.e_ident[EI_DATA]) | |
532 | { | |
533 | case ELFDATA2MSB: /* Big-endian */ | |
534 | if (! bfd_header_big_endian (abfd)) | |
535 | goto got_wrong_format_error; | |
536 | break; | |
537 | case ELFDATA2LSB: /* Little-endian */ | |
538 | if (! bfd_header_little_endian (abfd)) | |
539 | goto got_wrong_format_error; | |
540 | break; | |
541 | case ELFDATANONE: /* No data encoding specified */ | |
542 | default: /* Unknown data encoding specified */ | |
543 | goto got_wrong_format_error; | |
544 | } | |
545 | ||
0c83546a AM |
546 | if (!bfd_preserve_save (abfd, &preserve)) |
547 | goto got_no_match; | |
548 | ||
d1036acb L |
549 | target = abfd->xvec; |
550 | ||
252b5132 RH |
551 | /* Allocate an instance of the elf_obj_tdata structure and hook it up to |
552 | the tdata pointer in the bfd. */ | |
553 | ||
d1036acb | 554 | if (! (*target->_bfd_set_format[bfd_object]) (abfd)) |
252b5132 | 555 | goto got_no_match; |
0c83546a | 556 | preserve.marker = elf_tdata (abfd); |
e84d6fca | 557 | |
252b5132 RH |
558 | /* Now that we know the byte order, swap in the rest of the header */ |
559 | i_ehdrp = elf_elfheader (abfd); | |
560 | elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp); | |
561 | #if DEBUG & 1 | |
562 | elf_debug_file (i_ehdrp); | |
563 | #endif | |
564 | ||
565 | /* Reject ET_CORE (header indicates core file, not object file) */ | |
566 | if (i_ehdrp->e_type == ET_CORE) | |
567 | goto got_wrong_format_error; | |
568 | ||
0c35f01a AM |
569 | /* If this is a relocatable file and there is no section header |
570 | table, then we're hosed. */ | |
571 | if (i_ehdrp->e_shoff == 0 && i_ehdrp->e_type == ET_REL) | |
252b5132 RH |
572 | goto got_wrong_format_error; |
573 | ||
e460dd0d | 574 | /* As a simple sanity check, verify that what BFD thinks is the |
252b5132 | 575 | size of each section header table entry actually matches the size |
0c35f01a AM |
576 | recorded in the file, but only if there are any sections. */ |
577 | if (i_ehdrp->e_shentsize != sizeof (x_shdr) && i_ehdrp->e_shnum != 0) | |
252b5132 RH |
578 | goto got_wrong_format_error; |
579 | ||
7ece0d85 JJ |
580 | /* Further sanity check. */ |
581 | if (i_ehdrp->e_shoff == 0 && i_ehdrp->e_shnum != 0) | |
582 | goto got_wrong_format_error; | |
583 | ||
252b5132 RH |
584 | ebd = get_elf_backend_data (abfd); |
585 | ||
586 | /* Check that the ELF e_machine field matches what this particular | |
587 | BFD format expects. */ | |
588 | if (ebd->elf_machine_code != i_ehdrp->e_machine | |
e84d6fca AM |
589 | && (ebd->elf_machine_alt1 == 0 |
590 | || i_ehdrp->e_machine != ebd->elf_machine_alt1) | |
591 | && (ebd->elf_machine_alt2 == 0 | |
592 | || i_ehdrp->e_machine != ebd->elf_machine_alt2)) | |
252b5132 | 593 | { |
252b5132 RH |
594 | if (ebd->elf_machine_code != EM_NONE) |
595 | goto got_wrong_format_error; | |
596 | ||
597 | /* This is the generic ELF target. Let it match any ELF target | |
598 | for which we do not have a specific backend. */ | |
599 | for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++) | |
600 | { | |
9c5bfbb7 | 601 | const struct elf_backend_data *back; |
252b5132 RH |
602 | |
603 | if ((*target_ptr)->flavour != bfd_target_elf_flavour) | |
604 | continue; | |
9c5bfbb7 | 605 | back = (const struct elf_backend_data *) (*target_ptr)->backend_data; |
252b5132 RH |
606 | if (back->elf_machine_code == i_ehdrp->e_machine |
607 | || (back->elf_machine_alt1 != 0 | |
608 | && back->elf_machine_alt1 == i_ehdrp->e_machine) | |
609 | || (back->elf_machine_alt2 != 0 | |
610 | && back->elf_machine_alt2 == i_ehdrp->e_machine)) | |
611 | { | |
612 | /* target_ptr is an ELF backend which matches this | |
613 | object file, so reject the generic ELF target. */ | |
614 | goto got_wrong_format_error; | |
615 | } | |
616 | } | |
617 | } | |
618 | ||
619 | if (i_ehdrp->e_type == ET_EXEC) | |
620 | abfd->flags |= EXEC_P; | |
621 | else if (i_ehdrp->e_type == ET_DYN) | |
622 | abfd->flags |= DYNAMIC; | |
623 | ||
624 | if (i_ehdrp->e_phnum > 0) | |
625 | abfd->flags |= D_PAGED; | |
626 | ||
627 | if (! bfd_default_set_arch_mach (abfd, ebd->arch, 0)) | |
628 | { | |
629 | /* It's OK if this fails for the generic target. */ | |
630 | if (ebd->elf_machine_code != EM_NONE) | |
631 | goto got_no_match; | |
632 | } | |
633 | ||
d1036acb L |
634 | if (ebd->elf_machine_code != EM_NONE |
635 | && i_ehdrp->e_ident[EI_OSABI] != ebd->elf_osabi) | |
636 | { | |
637 | if (ebd->elf_osabi != ELFOSABI_NONE) | |
638 | goto got_wrong_format_error; | |
639 | ||
640 | /* This is an ELFOSABI_NONE ELF target. Let it match any ELF | |
641 | target of the compatible machine for which we do not have a | |
642 | backend with matching ELFOSABI. */ | |
643 | for (target_ptr = bfd_target_vector; | |
644 | *target_ptr != NULL; | |
645 | target_ptr++) | |
646 | { | |
647 | const struct elf_backend_data *back; | |
648 | ||
649 | /* Skip this target and targets with incompatible byte | |
650 | order. */ | |
651 | if (*target_ptr == target | |
652 | || (*target_ptr)->flavour != bfd_target_elf_flavour | |
653 | || (*target_ptr)->byteorder != target->byteorder | |
654 | || ((*target_ptr)->header_byteorder | |
655 | != target->header_byteorder)) | |
656 | continue; | |
657 | ||
658 | back = (const struct elf_backend_data *) (*target_ptr)->backend_data; | |
659 | if (back->elf_osabi == i_ehdrp->e_ident[EI_OSABI] | |
660 | && (back->elf_machine_code == i_ehdrp->e_machine | |
661 | || (back->elf_machine_alt1 != 0 | |
662 | && back->elf_machine_alt1 == i_ehdrp->e_machine) | |
663 | || (back->elf_machine_alt2 != 0 | |
664 | && back->elf_machine_alt2 == i_ehdrp->e_machine))) | |
665 | { | |
666 | /* target_ptr is an ELF backend which matches this | |
667 | object file, so reject the ELFOSABI_NONE ELF target. */ | |
668 | goto got_wrong_format_error; | |
669 | } | |
670 | } | |
671 | } | |
672 | ||
7ece0d85 JJ |
673 | if (i_ehdrp->e_shoff != 0) |
674 | { | |
0560d0f7 AM |
675 | bfd_signed_vma where = i_ehdrp->e_shoff; |
676 | ||
677 | if (where != (file_ptr) where) | |
678 | goto got_wrong_format_error; | |
679 | ||
7ece0d85 | 680 | /* Seek to the section header table in the file. */ |
0560d0f7 | 681 | if (bfd_seek (abfd, (file_ptr) where, SEEK_SET) != 0) |
7ece0d85 | 682 | goto got_no_match; |
5732c114 | 683 | |
7ece0d85 JJ |
684 | /* Read the first section header at index 0, and convert to internal |
685 | form. */ | |
268b6b39 | 686 | if (bfd_bread (&x_shdr, sizeof x_shdr, abfd) != sizeof (x_shdr)) |
7ece0d85 JJ |
687 | goto got_no_match; |
688 | elf_swap_shdr_in (abfd, &x_shdr, &i_shdr); | |
5732c114 | 689 | |
7ece0d85 JJ |
690 | /* If the section count is zero, the actual count is in the first |
691 | section header. */ | |
692 | if (i_ehdrp->e_shnum == SHN_UNDEF) | |
0560d0f7 AM |
693 | { |
694 | i_ehdrp->e_shnum = i_shdr.sh_size; | |
24639c7d JJ |
695 | if (i_ehdrp->e_shnum != i_shdr.sh_size |
696 | || i_ehdrp->e_shnum == 0) | |
0560d0f7 AM |
697 | goto got_wrong_format_error; |
698 | } | |
5732c114 | 699 | |
7ece0d85 JJ |
700 | /* And similarly for the string table index. */ |
701 | if (i_ehdrp->e_shstrndx == SHN_XINDEX) | |
0560d0f7 AM |
702 | { |
703 | i_ehdrp->e_shstrndx = i_shdr.sh_link; | |
704 | if (i_ehdrp->e_shstrndx != i_shdr.sh_link) | |
705 | goto got_wrong_format_error; | |
706 | } | |
707 | ||
708 | /* Sanity check that we can read all of the section headers. | |
709 | It ought to be good enough to just read the last one. */ | |
710 | if (i_ehdrp->e_shnum != 1) | |
711 | { | |
712 | /* Check that we don't have a totally silly number of sections. */ | |
24639c7d JJ |
713 | if (i_ehdrp->e_shnum > (unsigned int) -1 / sizeof (x_shdr) |
714 | || i_ehdrp->e_shnum > (unsigned int) -1 / sizeof (i_shdr)) | |
0560d0f7 AM |
715 | goto got_wrong_format_error; |
716 | ||
717 | where += (i_ehdrp->e_shnum - 1) * sizeof (x_shdr); | |
718 | if (where != (file_ptr) where) | |
719 | goto got_wrong_format_error; | |
720 | if ((bfd_size_type) where <= i_ehdrp->e_shoff) | |
721 | goto got_wrong_format_error; | |
722 | ||
723 | if (bfd_seek (abfd, (file_ptr) where, SEEK_SET) != 0) | |
724 | goto got_no_match; | |
725 | if (bfd_bread (&x_shdr, sizeof x_shdr, abfd) != sizeof (x_shdr)) | |
726 | goto got_no_match; | |
727 | ||
728 | /* Back to where we were. */ | |
729 | where = i_ehdrp->e_shoff + sizeof (x_shdr); | |
730 | if (bfd_seek (abfd, (file_ptr) where, SEEK_SET) != 0) | |
731 | goto got_no_match; | |
732 | } | |
7ece0d85 | 733 | } |
5732c114 | 734 | |
252b5132 | 735 | /* Allocate space for a copy of the section header table in |
5732c114 | 736 | internal form. */ |
0c35f01a AM |
737 | if (i_ehdrp->e_shnum != 0) |
738 | { | |
5732c114 | 739 | Elf_Internal_Shdr *shdrp; |
9ad5cbcf | 740 | unsigned int num_sec; |
5732c114 | 741 | |
0c35f01a | 742 | amt = sizeof (*i_shdrp) * i_ehdrp->e_shnum; |
268b6b39 | 743 | i_shdrp = bfd_alloc (abfd, amt); |
5732c114 AM |
744 | if (!i_shdrp) |
745 | goto got_no_match; | |
9ad5cbcf AM |
746 | num_sec = i_ehdrp->e_shnum; |
747 | if (num_sec > SHN_LORESERVE) | |
748 | num_sec += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
749 | elf_numsections (abfd) = num_sec; | |
750 | amt = sizeof (i_shdrp) * num_sec; | |
268b6b39 | 751 | elf_elfsections (abfd) = bfd_alloc (abfd, amt); |
5732c114 | 752 | if (!elf_elfsections (abfd)) |
0c35f01a | 753 | goto got_no_match; |
5732c114 AM |
754 | |
755 | memcpy (i_shdrp, &i_shdr, sizeof (*i_shdrp)); | |
756 | shdrp = i_shdrp; | |
757 | shindex = 0; | |
9ad5cbcf | 758 | if (num_sec > SHN_LORESERVE) |
5732c114 AM |
759 | { |
760 | for ( ; shindex < SHN_LORESERVE; shindex++) | |
761 | elf_elfsections (abfd)[shindex] = shdrp++; | |
762 | for ( ; shindex < SHN_HIRESERVE + 1; shindex++) | |
9ad5cbcf | 763 | elf_elfsections (abfd)[shindex] = i_shdrp; |
5732c114 | 764 | } |
9ad5cbcf | 765 | for ( ; shindex < num_sec; shindex++) |
5732c114 | 766 | elf_elfsections (abfd)[shindex] = shdrp++; |
5732c114 | 767 | |
ed591155 AM |
768 | /* Read in the rest of the section header table and convert it |
769 | to internal form. */ | |
770 | for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++) | |
771 | { | |
268b6b39 | 772 | if (bfd_bread (&x_shdr, sizeof x_shdr, abfd) != sizeof (x_shdr)) |
ed591155 AM |
773 | goto got_no_match; |
774 | elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex); | |
775 | ||
24639c7d | 776 | /* Sanity check sh_link and sh_info. */ |
5e1b4a6d | 777 | if (! valid_section_index_p (i_shdrp[shindex].sh_link, num_sec)) |
24639c7d JJ |
778 | goto got_wrong_format_error; |
779 | ||
780 | if (((i_shdrp[shindex].sh_flags & SHF_INFO_LINK) | |
781 | || i_shdrp[shindex].sh_type == SHT_RELA | |
782 | || i_shdrp[shindex].sh_type == SHT_REL) | |
5e1b4a6d | 783 | && ! valid_section_index_p (i_shdrp[shindex].sh_info, num_sec)) |
24639c7d JJ |
784 | goto got_wrong_format_error; |
785 | ||
ed591155 AM |
786 | /* If the section is loaded, but not page aligned, clear |
787 | D_PAGED. */ | |
788 | if (i_shdrp[shindex].sh_size != 0 | |
789 | && (i_shdrp[shindex].sh_flags & SHF_ALLOC) != 0 | |
790 | && i_shdrp[shindex].sh_type != SHT_NOBITS | |
791 | && (((i_shdrp[shindex].sh_addr - i_shdrp[shindex].sh_offset) | |
b1342370 | 792 | % ebd->minpagesize) |
ed591155 AM |
793 | != 0)) |
794 | abfd->flags &= ~D_PAGED; | |
795 | } | |
252b5132 | 796 | } |
ed591155 | 797 | |
24639c7d JJ |
798 | /* A further sanity check. */ |
799 | if (i_ehdrp->e_shnum != 0) | |
800 | { | |
5e1b4a6d | 801 | if (! valid_section_index_p (i_ehdrp->e_shstrndx, elf_numsections (abfd))) |
0b49d371 NC |
802 | { |
803 | /* PR 2257: | |
804 | We used to just goto got_wrong_format_error here | |
805 | but there are binaries in existance for which this test | |
806 | will prevent the binutils from working with them at all. | |
807 | So we are kind, and reset the string index value to 0 | |
808 | so that at least some processing can be done. */ | |
809 | i_ehdrp->e_shstrndx = SHN_UNDEF; | |
810 | _bfd_error_handler (_("warning: %s has a corrupt string table index - ignoring"), abfd->filename); | |
811 | } | |
24639c7d | 812 | } |
0b49d371 | 813 | else if (i_ehdrp->e_shstrndx != SHN_UNDEF) |
24639c7d JJ |
814 | goto got_wrong_format_error; |
815 | ||
252b5132 RH |
816 | /* Read in the program headers. */ |
817 | if (i_ehdrp->e_phnum == 0) | |
818 | elf_tdata (abfd)->phdr = NULL; | |
819 | else | |
820 | { | |
821 | Elf_Internal_Phdr *i_phdr; | |
822 | unsigned int i; | |
823 | ||
dc810e39 | 824 | amt = i_ehdrp->e_phnum * sizeof (Elf_Internal_Phdr); |
268b6b39 | 825 | elf_tdata (abfd)->phdr = bfd_alloc (abfd, amt); |
252b5132 RH |
826 | if (elf_tdata (abfd)->phdr == NULL) |
827 | goto got_no_match; | |
dc810e39 | 828 | if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_phoff, SEEK_SET) != 0) |
252b5132 RH |
829 | goto got_no_match; |
830 | i_phdr = elf_tdata (abfd)->phdr; | |
831 | for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++) | |
832 | { | |
833 | Elf_External_Phdr x_phdr; | |
834 | ||
268b6b39 | 835 | if (bfd_bread (&x_phdr, sizeof x_phdr, abfd) != sizeof x_phdr) |
252b5132 RH |
836 | goto got_no_match; |
837 | elf_swap_phdr_in (abfd, &x_phdr, i_phdr); | |
838 | } | |
839 | } | |
840 | ||
1b3a8575 | 841 | if (i_ehdrp->e_shstrndx != 0 && i_ehdrp->e_shoff != 0) |
252b5132 | 842 | { |
9ad5cbcf AM |
843 | unsigned int num_sec; |
844 | ||
0c35f01a AM |
845 | /* Once all of the section headers have been read and converted, we |
846 | can start processing them. Note that the first section header is | |
847 | a dummy placeholder entry, so we ignore it. */ | |
9ad5cbcf AM |
848 | num_sec = elf_numsections (abfd); |
849 | for (shindex = 1; shindex < num_sec; shindex++) | |
0c35f01a AM |
850 | { |
851 | if (! bfd_section_from_shdr (abfd, shindex)) | |
852 | goto got_no_match; | |
9ad5cbcf AM |
853 | if (shindex == SHN_LORESERVE - 1) |
854 | shindex += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
0c35f01a | 855 | } |
3d7f7666 | 856 | |
dd863624 L |
857 | /* Set up ELF sections for SHF_GROUP and SHF_LINK_ORDER. */ |
858 | if (! _bfd_elf_setup_sections (abfd)) | |
3d7f7666 | 859 | goto got_wrong_format_error; |
252b5132 RH |
860 | } |
861 | ||
862 | /* Let the backend double check the format and override global | |
863 | information. */ | |
864 | if (ebd->elf_backend_object_p) | |
865 | { | |
82e51918 | 866 | if (! (*ebd->elf_backend_object_p) (abfd)) |
252b5132 RH |
867 | goto got_wrong_format_error; |
868 | } | |
869 | ||
a14199db AM |
870 | /* Remember the entry point specified in the ELF file header. */ |
871 | bfd_set_start_address (abfd, i_ehdrp->e_entry); | |
872 | ||
252b5132 RH |
873 | /* If we have created any reloc sections that are associated with |
874 | debugging sections, mark the reloc sections as debugging as well. */ | |
875 | for (s = abfd->sections; s != NULL; s = s->next) | |
876 | { | |
877 | if ((elf_section_data (s)->this_hdr.sh_type == SHT_REL | |
878 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA) | |
879 | && elf_section_data (s)->this_hdr.sh_info > 0) | |
880 | { | |
881 | unsigned long targ_index; | |
882 | asection *targ_sec; | |
883 | ||
884 | targ_index = elf_section_data (s)->this_hdr.sh_info; | |
885 | targ_sec = bfd_section_from_elf_index (abfd, targ_index); | |
886 | if (targ_sec != NULL | |
887 | && (targ_sec->flags & SEC_DEBUGGING) != 0) | |
888 | s->flags |= SEC_DEBUGGING; | |
889 | } | |
890 | } | |
891 | ||
e84d6fca | 892 | bfd_preserve_finish (abfd, &preserve); |
d1036acb | 893 | return target; |
252b5132 RH |
894 | |
895 | got_wrong_format_error: | |
a77a9fef HPN |
896 | /* There is way too much undoing of half-known state here. The caller, |
897 | bfd_check_format_matches, really shouldn't iterate on live bfd's to | |
898 | check match/no-match like it does. We have to rely on that a call to | |
899 | bfd_default_set_arch_mach with the previously known mach, undoes what | |
900 | was done by the first bfd_default_set_arch_mach (with mach 0) here. | |
901 | For this to work, only elf-data and the mach may be changed by the | |
902 | target-specific elf_backend_object_p function. Note that saving the | |
903 | whole bfd here and restoring it would be even worse; the first thing | |
904 | you notice is that the cached bfd file position gets out of sync. */ | |
252b5132 | 905 | bfd_set_error (bfd_error_wrong_format); |
ed591155 | 906 | |
252b5132 | 907 | got_no_match: |
e84d6fca AM |
908 | if (preserve.marker != NULL) |
909 | bfd_preserve_restore (abfd, &preserve); | |
ed591155 | 910 | return NULL; |
252b5132 RH |
911 | } |
912 | \f | |
913 | /* ELF .o/exec file writing */ | |
914 | ||
915 | /* Write out the relocs. */ | |
916 | ||
b9f66672 | 917 | void |
268b6b39 | 918 | elf_write_relocs (bfd *abfd, asection *sec, void *data) |
252b5132 | 919 | { |
268b6b39 | 920 | bfd_boolean *failedp = data; |
252b5132 | 921 | Elf_Internal_Shdr *rela_hdr; |
947216bf | 922 | bfd_vma addr_offset; |
c39a58e6 | 923 | void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
947216bf AM |
924 | size_t extsize; |
925 | bfd_byte *dst_rela; | |
252b5132 | 926 | unsigned int idx; |
947216bf AM |
927 | asymbol *last_sym; |
928 | int last_sym_idx; | |
252b5132 RH |
929 | |
930 | /* If we have already failed, don't do anything. */ | |
931 | if (*failedp) | |
932 | return; | |
933 | ||
934 | if ((sec->flags & SEC_RELOC) == 0) | |
935 | return; | |
936 | ||
937 | /* The linker backend writes the relocs out itself, and sets the | |
938 | reloc_count field to zero to inhibit writing them here. Also, | |
939 | sometimes the SEC_RELOC flag gets set even when there aren't any | |
940 | relocs. */ | |
941 | if (sec->reloc_count == 0) | |
942 | return; | |
943 | ||
9a44bbd9 DJ |
944 | /* If we have opened an existing file for update, reloc_count may be |
945 | set even though we are not linking. In that case we have nothing | |
946 | to do. */ | |
947 | if (sec->orelocation == NULL) | |
948 | return; | |
949 | ||
252b5132 RH |
950 | rela_hdr = &elf_section_data (sec)->rel_hdr; |
951 | ||
952 | rela_hdr->sh_size = rela_hdr->sh_entsize * sec->reloc_count; | |
268b6b39 | 953 | rela_hdr->contents = bfd_alloc (abfd, rela_hdr->sh_size); |
252b5132 RH |
954 | if (rela_hdr->contents == NULL) |
955 | { | |
b34976b6 | 956 | *failedp = TRUE; |
252b5132 RH |
957 | return; |
958 | } | |
959 | ||
bf572ba0 MM |
960 | /* Figure out whether the relocations are RELA or REL relocations. */ |
961 | if (rela_hdr->sh_type == SHT_RELA) | |
947216bf AM |
962 | { |
963 | swap_out = elf_swap_reloca_out; | |
964 | extsize = sizeof (Elf_External_Rela); | |
965 | } | |
bf572ba0 | 966 | else if (rela_hdr->sh_type == SHT_REL) |
947216bf AM |
967 | { |
968 | swap_out = elf_swap_reloc_out; | |
969 | extsize = sizeof (Elf_External_Rel); | |
970 | } | |
bf572ba0 MM |
971 | else |
972 | /* Every relocation section should be either an SHT_RELA or an | |
973 | SHT_REL section. */ | |
974 | abort (); | |
975 | ||
947216bf AM |
976 | /* The address of an ELF reloc is section relative for an object |
977 | file, and absolute for an executable file or shared library. | |
978 | The address of a BFD reloc is always section relative. */ | |
979 | addr_offset = 0; | |
980 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
981 | addr_offset = sec->vma; | |
982 | ||
3e932841 | 983 | /* orelocation has the data, reloc_count has the count... */ |
947216bf AM |
984 | last_sym = 0; |
985 | last_sym_idx = 0; | |
986 | dst_rela = rela_hdr->contents; | |
252b5132 | 987 | |
947216bf AM |
988 | for (idx = 0; idx < sec->reloc_count; idx++, dst_rela += extsize) |
989 | { | |
990 | Elf_Internal_Rela src_rela; | |
991 | arelent *ptr; | |
992 | asymbol *sym; | |
993 | int n; | |
994 | ||
995 | ptr = sec->orelocation[idx]; | |
996 | sym = *ptr->sym_ptr_ptr; | |
997 | if (sym == last_sym) | |
998 | n = last_sym_idx; | |
999 | else if (bfd_is_abs_section (sym->section) && sym->value == 0) | |
1000 | n = STN_UNDEF; | |
1001 | else | |
252b5132 | 1002 | { |
947216bf AM |
1003 | last_sym = sym; |
1004 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); | |
1005 | if (n < 0) | |
252b5132 | 1006 | { |
b34976b6 | 1007 | *failedp = TRUE; |
252b5132 RH |
1008 | return; |
1009 | } | |
947216bf | 1010 | last_sym_idx = n; |
252b5132 | 1011 | } |
252b5132 | 1012 | |
947216bf AM |
1013 | if ((*ptr->sym_ptr_ptr)->the_bfd != NULL |
1014 | && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec | |
1015 | && ! _bfd_elf_validate_reloc (abfd, ptr)) | |
252b5132 | 1016 | { |
b34976b6 | 1017 | *failedp = TRUE; |
947216bf | 1018 | return; |
252b5132 | 1019 | } |
947216bf AM |
1020 | |
1021 | src_rela.r_offset = ptr->address + addr_offset; | |
1022 | src_rela.r_info = ELF_R_INFO (n, ptr->howto->type); | |
1023 | src_rela.r_addend = ptr->addend; | |
1024 | (*swap_out) (abfd, &src_rela, dst_rela); | |
252b5132 RH |
1025 | } |
1026 | } | |
1027 | ||
1028 | /* Write out the program headers. */ | |
1029 | ||
1030 | int | |
268b6b39 AM |
1031 | elf_write_out_phdrs (bfd *abfd, |
1032 | const Elf_Internal_Phdr *phdr, | |
1033 | unsigned int count) | |
252b5132 RH |
1034 | { |
1035 | while (count--) | |
1036 | { | |
1037 | Elf_External_Phdr extphdr; | |
1038 | elf_swap_phdr_out (abfd, phdr, &extphdr); | |
268b6b39 AM |
1039 | if (bfd_bwrite (&extphdr, sizeof (Elf_External_Phdr), abfd) |
1040 | != sizeof (Elf_External_Phdr)) | |
252b5132 RH |
1041 | return -1; |
1042 | phdr++; | |
1043 | } | |
1044 | return 0; | |
1045 | } | |
1046 | ||
1047 | /* Write out the section headers and the ELF file header. */ | |
1048 | ||
b34976b6 | 1049 | bfd_boolean |
268b6b39 | 1050 | elf_write_shdrs_and_ehdr (bfd *abfd) |
252b5132 RH |
1051 | { |
1052 | Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ | |
1053 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
1054 | Elf_External_Shdr *x_shdrp; /* Section header table, external form */ | |
1055 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
1056 | unsigned int count; | |
dc810e39 | 1057 | bfd_size_type amt; |
252b5132 RH |
1058 | |
1059 | i_ehdrp = elf_elfheader (abfd); | |
1060 | i_shdrp = elf_elfsections (abfd); | |
1061 | ||
3e932841 | 1062 | /* swap the header before spitting it out... */ |
252b5132 RH |
1063 | |
1064 | #if DEBUG & 1 | |
1065 | elf_debug_file (i_ehdrp); | |
1066 | #endif | |
1067 | elf_swap_ehdr_out (abfd, i_ehdrp, &x_ehdr); | |
dc810e39 | 1068 | amt = sizeof (x_ehdr); |
252b5132 | 1069 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 |
268b6b39 | 1070 | || bfd_bwrite (&x_ehdr, amt, abfd) != amt) |
b34976b6 | 1071 | return FALSE; |
252b5132 | 1072 | |
5732c114 AM |
1073 | /* Some fields in the first section header handle overflow of ehdr |
1074 | fields. */ | |
1075 | if (i_ehdrp->e_shnum >= SHN_LORESERVE) | |
1076 | i_shdrp[0]->sh_size = i_ehdrp->e_shnum; | |
1077 | if (i_ehdrp->e_shstrndx >= SHN_LORESERVE) | |
1078 | i_shdrp[0]->sh_link = i_ehdrp->e_shstrndx; | |
1079 | ||
3e932841 | 1080 | /* at this point we've concocted all the ELF sections... */ |
5732c114 AM |
1081 | amt = i_ehdrp->e_shnum; |
1082 | amt *= sizeof (*x_shdrp); | |
268b6b39 | 1083 | x_shdrp = bfd_alloc (abfd, amt); |
252b5132 | 1084 | if (!x_shdrp) |
b34976b6 | 1085 | return FALSE; |
252b5132 | 1086 | |
5732c114 | 1087 | for (count = 0; count < i_ehdrp->e_shnum; i_shdrp++, count++) |
252b5132 RH |
1088 | { |
1089 | #if DEBUG & 2 | |
5732c114 | 1090 | elf_debug_section (count, *i_shdrp); |
252b5132 | 1091 | #endif |
5732c114 | 1092 | elf_swap_shdr_out (abfd, *i_shdrp, x_shdrp + count); |
b34976b6 | 1093 | |
5732c114 AM |
1094 | if (count == SHN_LORESERVE - 1) |
1095 | i_shdrp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
1096 | } |
1097 | if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_shoff, SEEK_SET) != 0 | |
268b6b39 | 1098 | || bfd_bwrite (x_shdrp, amt, abfd) != amt) |
b34976b6 | 1099 | return FALSE; |
252b5132 | 1100 | |
3e932841 | 1101 | /* need to dump the string table too... */ |
252b5132 | 1102 | |
b34976b6 | 1103 | return TRUE; |
252b5132 RH |
1104 | } |
1105 | ||
1106 | long | |
268b6b39 | 1107 | elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) |
252b5132 RH |
1108 | { |
1109 | Elf_Internal_Shdr *hdr; | |
1110 | Elf_Internal_Shdr *verhdr; | |
1111 | unsigned long symcount; /* Number of external ELF symbols */ | |
1112 | elf_symbol_type *sym; /* Pointer to current bfd symbol */ | |
1113 | elf_symbol_type *symbase; /* Buffer for generated bfd symbols */ | |
6cdc0ccc AM |
1114 | Elf_Internal_Sym *isym; |
1115 | Elf_Internal_Sym *isymend; | |
1116 | Elf_Internal_Sym *isymbuf = NULL; | |
1117 | Elf_External_Versym *xver; | |
1118 | Elf_External_Versym *xverbuf = NULL; | |
9c5bfbb7 | 1119 | const struct elf_backend_data *ebd; |
dc810e39 | 1120 | bfd_size_type amt; |
252b5132 RH |
1121 | |
1122 | /* Read each raw ELF symbol, converting from external ELF form to | |
1123 | internal ELF form, and then using the information to create a | |
1124 | canonical bfd symbol table entry. | |
1125 | ||
1126 | Note that we allocate the initial bfd canonical symbol buffer | |
1127 | based on a one-to-one mapping of the ELF symbols to canonical | |
1128 | symbols. We actually use all the ELF symbols, so there will be no | |
1129 | space left over at the end. When we have all the symbols, we | |
3e932841 | 1130 | build the caller's pointer vector. */ |
252b5132 RH |
1131 | |
1132 | if (! dynamic) | |
1133 | { | |
1134 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
1135 | verhdr = NULL; | |
1136 | } | |
1137 | else | |
1138 | { | |
1139 | hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1140 | if (elf_dynversym (abfd) == 0) | |
1141 | verhdr = NULL; | |
1142 | else | |
1143 | verhdr = &elf_tdata (abfd)->dynversym_hdr; | |
1144 | if ((elf_tdata (abfd)->dynverdef_section != 0 | |
1145 | && elf_tdata (abfd)->verdef == NULL) | |
1146 | || (elf_tdata (abfd)->dynverref_section != 0 | |
1147 | && elf_tdata (abfd)->verref == NULL)) | |
1148 | { | |
fc0e6df6 | 1149 | if (!_bfd_elf_slurp_version_tables (abfd, FALSE)) |
252b5132 RH |
1150 | return -1; |
1151 | } | |
1152 | } | |
1153 | ||
6cdc0ccc | 1154 | ebd = get_elf_backend_data (abfd); |
252b5132 | 1155 | symcount = hdr->sh_size / sizeof (Elf_External_Sym); |
252b5132 RH |
1156 | if (symcount == 0) |
1157 | sym = symbase = NULL; | |
1158 | else | |
1159 | { | |
6cdc0ccc AM |
1160 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, symcount, 0, |
1161 | NULL, NULL, NULL); | |
1162 | if (isymbuf == NULL) | |
1163 | return -1; | |
252b5132 | 1164 | |
dc810e39 AM |
1165 | amt = symcount; |
1166 | amt *= sizeof (elf_symbol_type); | |
268b6b39 | 1167 | symbase = bfd_zalloc (abfd, amt); |
252b5132 | 1168 | if (symbase == (elf_symbol_type *) NULL) |
9ad5cbcf | 1169 | goto error_return; |
252b5132 RH |
1170 | |
1171 | /* Read the raw ELF version symbol information. */ | |
252b5132 RH |
1172 | if (verhdr != NULL |
1173 | && verhdr->sh_size / sizeof (Elf_External_Versym) != symcount) | |
1174 | { | |
1175 | (*_bfd_error_handler) | |
1176 | (_("%s: version count (%ld) does not match symbol count (%ld)"), | |
1177 | abfd->filename, | |
1178 | (long) (verhdr->sh_size / sizeof (Elf_External_Versym)), | |
1179 | symcount); | |
1180 | ||
1181 | /* Slurp in the symbols without the version information, | |
0560d0f7 | 1182 | since that is more helpful than just quitting. */ |
252b5132 RH |
1183 | verhdr = NULL; |
1184 | } | |
1185 | ||
1186 | if (verhdr != NULL) | |
1187 | { | |
1188 | if (bfd_seek (abfd, verhdr->sh_offset, SEEK_SET) != 0) | |
1189 | goto error_return; | |
1190 | ||
268b6b39 | 1191 | xverbuf = bfd_malloc (verhdr->sh_size); |
6cdc0ccc | 1192 | if (xverbuf == NULL && verhdr->sh_size != 0) |
252b5132 RH |
1193 | goto error_return; |
1194 | ||
268b6b39 | 1195 | if (bfd_bread (xverbuf, verhdr->sh_size, abfd) != verhdr->sh_size) |
252b5132 RH |
1196 | goto error_return; |
1197 | } | |
1198 | ||
1199 | /* Skip first symbol, which is a null dummy. */ | |
6cdc0ccc AM |
1200 | xver = xverbuf; |
1201 | if (xver != NULL) | |
1202 | ++xver; | |
1203 | isymend = isymbuf + symcount; | |
1204 | for (isym = isymbuf + 1, sym = symbase; isym < isymend; isym++, sym++) | |
252b5132 | 1205 | { |
6cdc0ccc | 1206 | memcpy (&sym->internal_elf_sym, isym, sizeof (Elf_Internal_Sym)); |
252b5132 RH |
1207 | sym->symbol.the_bfd = abfd; |
1208 | ||
26c61ae5 | 1209 | sym->symbol.name = bfd_elf_sym_name (abfd, hdr, isym, NULL); |
252b5132 | 1210 | |
6cdc0ccc | 1211 | sym->symbol.value = isym->st_value; |
252b5132 | 1212 | |
6cdc0ccc | 1213 | if (isym->st_shndx == SHN_UNDEF) |
9ad5cbcf AM |
1214 | { |
1215 | sym->symbol.section = bfd_und_section_ptr; | |
1216 | } | |
6cdc0ccc AM |
1217 | else if (isym->st_shndx < SHN_LORESERVE |
1218 | || isym->st_shndx > SHN_HIRESERVE) | |
252b5132 | 1219 | { |
140f6c8e AM |
1220 | sym->symbol.section = bfd_section_from_elf_index (abfd, |
1221 | isym->st_shndx); | |
252b5132 RH |
1222 | if (sym->symbol.section == NULL) |
1223 | { | |
1224 | /* This symbol is in a section for which we did not | |
1225 | create a BFD section. Just use bfd_abs_section, | |
1226 | although it is wrong. FIXME. */ | |
1227 | sym->symbol.section = bfd_abs_section_ptr; | |
1228 | } | |
1229 | } | |
6cdc0ccc | 1230 | else if (isym->st_shndx == SHN_ABS) |
252b5132 RH |
1231 | { |
1232 | sym->symbol.section = bfd_abs_section_ptr; | |
1233 | } | |
6cdc0ccc | 1234 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 RH |
1235 | { |
1236 | sym->symbol.section = bfd_com_section_ptr; | |
1237 | /* Elf puts the alignment into the `value' field, and | |
1238 | the size into the `size' field. BFD wants to see the | |
1239 | size in the value field, and doesn't care (at the | |
1240 | moment) about the alignment. */ | |
6cdc0ccc | 1241 | sym->symbol.value = isym->st_size; |
252b5132 | 1242 | } |
252b5132 RH |
1243 | else |
1244 | sym->symbol.section = bfd_abs_section_ptr; | |
1245 | ||
1049f94e | 1246 | /* If this is a relocatable file, then the symbol value is |
0560d0f7 | 1247 | already section relative. */ |
252b5132 RH |
1248 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) |
1249 | sym->symbol.value -= sym->symbol.section->vma; | |
1250 | ||
6cdc0ccc | 1251 | switch (ELF_ST_BIND (isym->st_info)) |
252b5132 RH |
1252 | { |
1253 | case STB_LOCAL: | |
1254 | sym->symbol.flags |= BSF_LOCAL; | |
1255 | break; | |
1256 | case STB_GLOBAL: | |
6cdc0ccc | 1257 | if (isym->st_shndx != SHN_UNDEF && isym->st_shndx != SHN_COMMON) |
252b5132 RH |
1258 | sym->symbol.flags |= BSF_GLOBAL; |
1259 | break; | |
1260 | case STB_WEAK: | |
1261 | sym->symbol.flags |= BSF_WEAK; | |
1262 | break; | |
1263 | } | |
1264 | ||
6cdc0ccc | 1265 | switch (ELF_ST_TYPE (isym->st_info)) |
252b5132 RH |
1266 | { |
1267 | case STT_SECTION: | |
1268 | sym->symbol.flags |= BSF_SECTION_SYM | BSF_DEBUGGING; | |
1269 | break; | |
1270 | case STT_FILE: | |
1271 | sym->symbol.flags |= BSF_FILE | BSF_DEBUGGING; | |
1272 | break; | |
1273 | case STT_FUNC: | |
1274 | sym->symbol.flags |= BSF_FUNCTION; | |
1275 | break; | |
1276 | case STT_OBJECT: | |
1277 | sym->symbol.flags |= BSF_OBJECT; | |
1278 | break; | |
0be9069d L |
1279 | case STT_TLS: |
1280 | sym->symbol.flags |= BSF_THREAD_LOCAL; | |
1281 | break; | |
d9352518 DB |
1282 | case STT_RELC: |
1283 | sym->symbol.flags |= BSF_RELC; | |
1284 | break; | |
1285 | case STT_SRELC: | |
1286 | sym->symbol.flags |= BSF_SRELC; | |
1287 | break; | |
252b5132 RH |
1288 | } |
1289 | ||
1290 | if (dynamic) | |
1291 | sym->symbol.flags |= BSF_DYNAMIC; | |
1292 | ||
6cdc0ccc | 1293 | if (xver != NULL) |
252b5132 RH |
1294 | { |
1295 | Elf_Internal_Versym iversym; | |
1296 | ||
6cdc0ccc | 1297 | _bfd_elf_swap_versym_in (abfd, xver, &iversym); |
252b5132 | 1298 | sym->version = iversym.vs_vers; |
6cdc0ccc | 1299 | xver++; |
252b5132 RH |
1300 | } |
1301 | ||
1302 | /* Do some backend-specific processing on this symbol. */ | |
6cdc0ccc AM |
1303 | if (ebd->elf_backend_symbol_processing) |
1304 | (*ebd->elf_backend_symbol_processing) (abfd, &sym->symbol); | |
252b5132 RH |
1305 | } |
1306 | } | |
1307 | ||
1308 | /* Do some backend-specific processing on this symbol table. */ | |
6cdc0ccc AM |
1309 | if (ebd->elf_backend_symbol_table_processing) |
1310 | (*ebd->elf_backend_symbol_table_processing) (abfd, symbase, symcount); | |
252b5132 RH |
1311 | |
1312 | /* We rely on the zalloc to clear out the final symbol entry. */ | |
1313 | ||
1314 | symcount = sym - symbase; | |
1315 | ||
1316 | /* Fill in the user's symbol pointer vector if needed. */ | |
1317 | if (symptrs) | |
1318 | { | |
1319 | long l = symcount; | |
1320 | ||
1321 | sym = symbase; | |
1322 | while (l-- > 0) | |
1323 | { | |
1324 | *symptrs++ = &sym->symbol; | |
1325 | sym++; | |
1326 | } | |
1327 | *symptrs = 0; /* Final null pointer */ | |
1328 | } | |
1329 | ||
6cdc0ccc AM |
1330 | if (xverbuf != NULL) |
1331 | free (xverbuf); | |
1332 | if (isymbuf != NULL && hdr->contents != (unsigned char *) isymbuf) | |
1333 | free (isymbuf); | |
252b5132 | 1334 | return symcount; |
9ad5cbcf | 1335 | |
252b5132 | 1336 | error_return: |
6cdc0ccc AM |
1337 | if (xverbuf != NULL) |
1338 | free (xverbuf); | |
1339 | if (isymbuf != NULL && hdr->contents != (unsigned char *) isymbuf) | |
1340 | free (isymbuf); | |
252b5132 RH |
1341 | return -1; |
1342 | } | |
1343 | ||
5c799c07 | 1344 | /* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of |
42fdc509 | 1345 | them. */ |
252b5132 | 1346 | |
b34976b6 | 1347 | static bfd_boolean |
268b6b39 AM |
1348 | elf_slurp_reloc_table_from_section (bfd *abfd, |
1349 | asection *asect, | |
1350 | Elf_Internal_Shdr *rel_hdr, | |
1351 | bfd_size_type reloc_count, | |
1352 | arelent *relents, | |
1353 | asymbol **symbols, | |
1354 | bfd_boolean dynamic) | |
252b5132 | 1355 | { |
9c5bfbb7 | 1356 | const struct elf_backend_data * const ebd = get_elf_backend_data (abfd); |
268b6b39 | 1357 | void *allocated = NULL; |
252b5132 | 1358 | bfd_byte *native_relocs; |
252b5132 RH |
1359 | arelent *relent; |
1360 | unsigned int i; | |
1361 | int entsize; | |
5ad8645c | 1362 | unsigned int symcount; |
252b5132 | 1363 | |
268b6b39 | 1364 | allocated = bfd_malloc (rel_hdr->sh_size); |
252b5132 RH |
1365 | if (allocated == NULL) |
1366 | goto error_return; | |
1367 | ||
1368 | if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 | |
dc810e39 | 1369 | || (bfd_bread (allocated, rel_hdr->sh_size, abfd) |
252b5132 RH |
1370 | != rel_hdr->sh_size)) |
1371 | goto error_return; | |
1372 | ||
268b6b39 | 1373 | native_relocs = allocated; |
252b5132 | 1374 | |
252b5132 RH |
1375 | entsize = rel_hdr->sh_entsize; |
1376 | BFD_ASSERT (entsize == sizeof (Elf_External_Rel) | |
1377 | || entsize == sizeof (Elf_External_Rela)); | |
1378 | ||
5ad8645c AM |
1379 | if (dynamic) |
1380 | symcount = bfd_get_dynamic_symcount (abfd); | |
1381 | else | |
1382 | symcount = bfd_get_symcount (abfd); | |
1383 | ||
252b5132 RH |
1384 | for (i = 0, relent = relents; |
1385 | i < reloc_count; | |
1386 | i++, relent++, native_relocs += entsize) | |
1387 | { | |
1388 | Elf_Internal_Rela rela; | |
252b5132 RH |
1389 | |
1390 | if (entsize == sizeof (Elf_External_Rela)) | |
947216bf | 1391 | elf_swap_reloca_in (abfd, native_relocs, &rela); |
252b5132 | 1392 | else |
947216bf | 1393 | elf_swap_reloc_in (abfd, native_relocs, &rela); |
252b5132 RH |
1394 | |
1395 | /* The address of an ELF reloc is section relative for an object | |
1396 | file, and absolute for an executable file or shared library. | |
1397 | The address of a normal BFD reloc is always section relative, | |
1398 | and the address of a dynamic reloc is absolute.. */ | |
1399 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) | |
1400 | relent->address = rela.r_offset; | |
1401 | else | |
1402 | relent->address = rela.r_offset - asect->vma; | |
1403 | ||
1404 | if (ELF_R_SYM (rela.r_info) == 0) | |
1405 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
05a487dc | 1406 | else if (ELF_R_SYM (rela.r_info) > symcount) |
1f70368c DJ |
1407 | { |
1408 | (*_bfd_error_handler) | |
1409 | (_("%s(%s): relocation %d has invalid symbol index %ld"), | |
1410 | abfd->filename, asect->name, i, ELF_R_SYM (rela.r_info)); | |
1411 | relent->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr; | |
1412 | } | |
252b5132 RH |
1413 | else |
1414 | { | |
b48c61bc | 1415 | asymbol **ps; |
28c9d252 | 1416 | |
252b5132 | 1417 | ps = symbols + ELF_R_SYM (rela.r_info) - 1; |
252b5132 | 1418 | |
f9cfae62 | 1419 | relent->sym_ptr_ptr = ps; |
252b5132 RH |
1420 | } |
1421 | ||
1422 | relent->addend = rela.r_addend; | |
1423 | ||
90fff0d4 DJ |
1424 | if ((entsize == sizeof (Elf_External_Rela) |
1425 | && ebd->elf_info_to_howto != NULL) | |
1426 | || ebd->elf_info_to_howto_rel == NULL) | |
252b5132 RH |
1427 | (*ebd->elf_info_to_howto) (abfd, relent, &rela); |
1428 | else | |
947216bf | 1429 | (*ebd->elf_info_to_howto_rel) (abfd, relent, &rela); |
252b5132 RH |
1430 | } |
1431 | ||
252b5132 RH |
1432 | if (allocated != NULL) |
1433 | free (allocated); | |
1434 | ||
b34976b6 | 1435 | return TRUE; |
252b5132 RH |
1436 | |
1437 | error_return: | |
1438 | if (allocated != NULL) | |
1439 | free (allocated); | |
b34976b6 | 1440 | return FALSE; |
252b5132 RH |
1441 | } |
1442 | ||
42fdc509 MM |
1443 | /* Read in and swap the external relocs. */ |
1444 | ||
b34976b6 | 1445 | bfd_boolean |
268b6b39 AM |
1446 | elf_slurp_reloc_table (bfd *abfd, |
1447 | asection *asect, | |
1448 | asymbol **symbols, | |
1449 | bfd_boolean dynamic) | |
42fdc509 MM |
1450 | { |
1451 | struct bfd_elf_section_data * const d = elf_section_data (asect); | |
1452 | Elf_Internal_Shdr *rel_hdr; | |
1453 | Elf_Internal_Shdr *rel_hdr2; | |
1454 | bfd_size_type reloc_count; | |
1455 | bfd_size_type reloc_count2; | |
1456 | arelent *relents; | |
dc810e39 | 1457 | bfd_size_type amt; |
42fdc509 MM |
1458 | |
1459 | if (asect->relocation != NULL) | |
b34976b6 | 1460 | return TRUE; |
42fdc509 MM |
1461 | |
1462 | if (! dynamic) | |
1463 | { | |
1464 | if ((asect->flags & SEC_RELOC) == 0 | |
1465 | || asect->reloc_count == 0) | |
b34976b6 | 1466 | return TRUE; |
42fdc509 MM |
1467 | |
1468 | rel_hdr = &d->rel_hdr; | |
d9bc7a44 | 1469 | reloc_count = NUM_SHDR_ENTRIES (rel_hdr); |
42fdc509 | 1470 | rel_hdr2 = d->rel_hdr2; |
d9bc7a44 | 1471 | reloc_count2 = (rel_hdr2 ? NUM_SHDR_ENTRIES (rel_hdr2) : 0); |
42fdc509 MM |
1472 | |
1473 | BFD_ASSERT (asect->reloc_count == reloc_count + reloc_count2); | |
1474 | BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset | |
1475 | || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset)); | |
1476 | ||
1477 | } | |
1478 | else | |
1479 | { | |
57e21bef MM |
1480 | /* Note that ASECT->RELOC_COUNT tends not to be accurate in this |
1481 | case because relocations against this section may use the | |
1482 | dynamic symbol table, and in that case bfd_section_from_shdr | |
1483 | in elf.c does not update the RELOC_COUNT. */ | |
eea6121a | 1484 | if (asect->size == 0) |
b34976b6 | 1485 | return TRUE; |
42fdc509 MM |
1486 | |
1487 | rel_hdr = &d->this_hdr; | |
d9bc7a44 | 1488 | reloc_count = NUM_SHDR_ENTRIES (rel_hdr); |
42fdc509 | 1489 | rel_hdr2 = NULL; |
57e21bef | 1490 | reloc_count2 = 0; |
42fdc509 MM |
1491 | } |
1492 | ||
dc810e39 | 1493 | amt = (reloc_count + reloc_count2) * sizeof (arelent); |
268b6b39 | 1494 | relents = bfd_alloc (abfd, amt); |
42fdc509 | 1495 | if (relents == NULL) |
b34976b6 | 1496 | return FALSE; |
42fdc509 MM |
1497 | |
1498 | if (!elf_slurp_reloc_table_from_section (abfd, asect, | |
1499 | rel_hdr, reloc_count, | |
1500 | relents, | |
1501 | symbols, dynamic)) | |
b34976b6 | 1502 | return FALSE; |
60bcf0fa NC |
1503 | |
1504 | if (rel_hdr2 | |
42fdc509 MM |
1505 | && !elf_slurp_reloc_table_from_section (abfd, asect, |
1506 | rel_hdr2, reloc_count2, | |
1507 | relents + reloc_count, | |
1508 | symbols, dynamic)) | |
b34976b6 | 1509 | return FALSE; |
42fdc509 | 1510 | |
42fdc509 | 1511 | asect->relocation = relents; |
b34976b6 | 1512 | return TRUE; |
42fdc509 MM |
1513 | } |
1514 | ||
e460dd0d | 1515 | #if DEBUG & 2 |
252b5132 | 1516 | static void |
268b6b39 | 1517 | elf_debug_section (int num, Elf_Internal_Shdr *hdr) |
252b5132 RH |
1518 | { |
1519 | fprintf (stderr, "\nSection#%d '%s' 0x%.8lx\n", num, | |
1520 | hdr->bfd_section != NULL ? hdr->bfd_section->name : "", | |
1521 | (long) hdr); | |
1522 | fprintf (stderr, | |
1523 | "sh_name = %ld\tsh_type = %ld\tsh_flags = %ld\n", | |
1524 | (long) hdr->sh_name, | |
1525 | (long) hdr->sh_type, | |
1526 | (long) hdr->sh_flags); | |
1527 | fprintf (stderr, | |
1528 | "sh_addr = %ld\tsh_offset = %ld\tsh_size = %ld\n", | |
1529 | (long) hdr->sh_addr, | |
1530 | (long) hdr->sh_offset, | |
1531 | (long) hdr->sh_size); | |
1532 | fprintf (stderr, | |
1533 | "sh_link = %ld\tsh_info = %ld\tsh_addralign = %ld\n", | |
1534 | (long) hdr->sh_link, | |
1535 | (long) hdr->sh_info, | |
1536 | (long) hdr->sh_addralign); | |
1537 | fprintf (stderr, "sh_entsize = %ld\n", | |
1538 | (long) hdr->sh_entsize); | |
1539 | fflush (stderr); | |
1540 | } | |
e460dd0d | 1541 | #endif |
252b5132 | 1542 | |
e460dd0d | 1543 | #if DEBUG & 1 |
252b5132 | 1544 | static void |
268b6b39 | 1545 | elf_debug_file (Elf_Internal_Ehdr *ehdrp) |
252b5132 RH |
1546 | { |
1547 | fprintf (stderr, "e_entry = 0x%.8lx\n", (long) ehdrp->e_entry); | |
1548 | fprintf (stderr, "e_phoff = %ld\n", (long) ehdrp->e_phoff); | |
1549 | fprintf (stderr, "e_phnum = %ld\n", (long) ehdrp->e_phnum); | |
1550 | fprintf (stderr, "e_phentsize = %ld\n", (long) ehdrp->e_phentsize); | |
1551 | fprintf (stderr, "e_shoff = %ld\n", (long) ehdrp->e_shoff); | |
1552 | fprintf (stderr, "e_shnum = %ld\n", (long) ehdrp->e_shnum); | |
1553 | fprintf (stderr, "e_shentsize = %ld\n", (long) ehdrp->e_shentsize); | |
1554 | } | |
252b5132 RH |
1555 | #endif |
1556 | \f | |
8d6337fe RM |
1557 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, |
1558 | reconstruct an ELF file by reading the segments out of remote memory | |
1559 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
1560 | points to. If not null, *LOADBASEP is filled in with the difference | |
1561 | between the VMAs from which the segments were read, and the VMAs the | |
1562 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
1563 | ||
1564 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
1565 | remote memory at target address VMA into the local buffer at MYADDR; it | |
1566 | should return zero on success or an `errno' code on failure. TEMPL must | |
1567 | be a BFD for a target with the word size and byte order found in the | |
1568 | remote memory. */ | |
1569 | ||
1570 | bfd * | |
268b6b39 AM |
1571 | NAME(_bfd_elf,bfd_from_remote_memory) |
1572 | (bfd *templ, | |
1573 | bfd_vma ehdr_vma, | |
1574 | bfd_vma *loadbasep, | |
f075ee0c | 1575 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
8d6337fe RM |
1576 | { |
1577 | Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ | |
1578 | Elf_Internal_Ehdr i_ehdr; /* Elf file header, internal form */ | |
1579 | Elf_External_Phdr *x_phdrs; | |
1580 | Elf_Internal_Phdr *i_phdrs, *last_phdr; | |
1581 | bfd *nbfd; | |
1582 | struct bfd_in_memory *bim; | |
1583 | int contents_size; | |
f075ee0c | 1584 | bfd_byte *contents; |
8d6337fe RM |
1585 | int err; |
1586 | unsigned int i; | |
1587 | bfd_vma loadbase; | |
1588 | ||
1589 | /* Read in the ELF header in external format. */ | |
f075ee0c | 1590 | err = target_read_memory (ehdr_vma, (bfd_byte *) &x_ehdr, sizeof x_ehdr); |
8d6337fe RM |
1591 | if (err) |
1592 | { | |
1593 | bfd_set_error (bfd_error_system_call); | |
1594 | errno = err; | |
1595 | return NULL; | |
1596 | } | |
1597 | ||
1598 | /* Now check to see if we have a valid ELF file, and one that BFD can | |
1599 | make use of. The magic number must match, the address size ('class') | |
1600 | and byte-swapping must match our XVEC entry. */ | |
1601 | ||
1602 | if (! elf_file_p (&x_ehdr) | |
1603 | || x_ehdr.e_ident[EI_VERSION] != EV_CURRENT | |
1604 | || x_ehdr.e_ident[EI_CLASS] != ELFCLASS) | |
1605 | { | |
1606 | bfd_set_error (bfd_error_wrong_format); | |
1607 | return NULL; | |
1608 | } | |
1609 | ||
1610 | /* Check that file's byte order matches xvec's */ | |
1611 | switch (x_ehdr.e_ident[EI_DATA]) | |
1612 | { | |
1613 | case ELFDATA2MSB: /* Big-endian */ | |
1614 | if (! bfd_header_big_endian (templ)) | |
1615 | { | |
1616 | bfd_set_error (bfd_error_wrong_format); | |
1617 | return NULL; | |
1618 | } | |
1619 | break; | |
1620 | case ELFDATA2LSB: /* Little-endian */ | |
1621 | if (! bfd_header_little_endian (templ)) | |
1622 | { | |
1623 | bfd_set_error (bfd_error_wrong_format); | |
1624 | return NULL; | |
1625 | } | |
1626 | break; | |
1627 | case ELFDATANONE: /* No data encoding specified */ | |
1628 | default: /* Unknown data encoding specified */ | |
1629 | bfd_set_error (bfd_error_wrong_format); | |
1630 | return NULL; | |
1631 | } | |
1632 | ||
1633 | elf_swap_ehdr_in (templ, &x_ehdr, &i_ehdr); | |
1634 | ||
1635 | /* The file header tells where to find the program headers. | |
1636 | These are what we use to actually choose what to read. */ | |
1637 | ||
1638 | if (i_ehdr.e_phentsize != sizeof (Elf_External_Phdr) || i_ehdr.e_phnum == 0) | |
1639 | { | |
1640 | bfd_set_error (bfd_error_wrong_format); | |
1641 | return NULL; | |
1642 | } | |
1643 | ||
268b6b39 | 1644 | x_phdrs = bfd_malloc (i_ehdr.e_phnum * (sizeof *x_phdrs + sizeof *i_phdrs)); |
8d6337fe RM |
1645 | if (x_phdrs == NULL) |
1646 | { | |
1647 | bfd_set_error (bfd_error_no_memory); | |
1648 | return NULL; | |
1649 | } | |
f075ee0c | 1650 | err = target_read_memory (ehdr_vma + i_ehdr.e_phoff, (bfd_byte *) x_phdrs, |
8d6337fe RM |
1651 | i_ehdr.e_phnum * sizeof x_phdrs[0]); |
1652 | if (err) | |
1653 | { | |
1654 | free (x_phdrs); | |
1655 | bfd_set_error (bfd_error_system_call); | |
1656 | errno = err; | |
1657 | return NULL; | |
1658 | } | |
1659 | i_phdrs = (Elf_Internal_Phdr *) &x_phdrs[i_ehdr.e_phnum]; | |
1660 | ||
1661 | contents_size = 0; | |
1662 | last_phdr = NULL; | |
1663 | loadbase = ehdr_vma; | |
1664 | for (i = 0; i < i_ehdr.e_phnum; ++i) | |
1665 | { | |
1666 | elf_swap_phdr_in (templ, &x_phdrs[i], &i_phdrs[i]); | |
653bb2de JW |
1667 | /* IA-64 vDSO may have two mappings for one segment, where one mapping |
1668 | is executable only, and one is read only. We must not use the | |
1669 | executable one. */ | |
1670 | if (i_phdrs[i].p_type == PT_LOAD && (i_phdrs[i].p_flags & PF_R)) | |
8d6337fe RM |
1671 | { |
1672 | bfd_vma segment_end; | |
1673 | segment_end = (i_phdrs[i].p_offset + i_phdrs[i].p_filesz | |
1674 | + i_phdrs[i].p_align - 1) & -i_phdrs[i].p_align; | |
1675 | if (segment_end > (bfd_vma) contents_size) | |
1676 | contents_size = segment_end; | |
1677 | ||
1678 | if ((i_phdrs[i].p_offset & -i_phdrs[i].p_align) == 0) | |
1679 | loadbase = ehdr_vma - (i_phdrs[i].p_vaddr & -i_phdrs[i].p_align); | |
1680 | ||
1681 | last_phdr = &i_phdrs[i]; | |
1682 | } | |
1683 | } | |
1684 | if (last_phdr == NULL) | |
1685 | { | |
1686 | /* There were no PT_LOAD segments, so we don't have anything to read. */ | |
1687 | free (x_phdrs); | |
1688 | bfd_set_error (bfd_error_wrong_format); | |
1689 | return NULL; | |
1690 | } | |
1691 | ||
1692 | /* Trim the last segment so we don't bother with zeros in the last page | |
1693 | that are off the end of the file. However, if the extra bit in that | |
1694 | page includes the section headers, keep them. */ | |
1695 | if ((bfd_vma) contents_size > last_phdr->p_offset + last_phdr->p_filesz | |
1696 | && (bfd_vma) contents_size >= (i_ehdr.e_shoff | |
1697 | + i_ehdr.e_shnum * i_ehdr.e_shentsize)) | |
1698 | { | |
1699 | contents_size = last_phdr->p_offset + last_phdr->p_filesz; | |
1700 | if ((bfd_vma) contents_size < (i_ehdr.e_shoff | |
1701 | + i_ehdr.e_shnum * i_ehdr.e_shentsize)) | |
1702 | contents_size = i_ehdr.e_shoff + i_ehdr.e_shnum * i_ehdr.e_shentsize; | |
1703 | } | |
1704 | else | |
1705 | contents_size = last_phdr->p_offset + last_phdr->p_filesz; | |
1706 | ||
1707 | /* Now we know the size of the whole image we want read in. */ | |
268b6b39 | 1708 | contents = bfd_zmalloc (contents_size); |
8d6337fe RM |
1709 | if (contents == NULL) |
1710 | { | |
1711 | free (x_phdrs); | |
1712 | bfd_set_error (bfd_error_no_memory); | |
1713 | return NULL; | |
1714 | } | |
1715 | ||
1716 | for (i = 0; i < i_ehdr.e_phnum; ++i) | |
653bb2de JW |
1717 | /* IA-64 vDSO may have two mappings for one segment, where one mapping |
1718 | is executable only, and one is read only. We must not use the | |
1719 | executable one. */ | |
1720 | if (i_phdrs[i].p_type == PT_LOAD && (i_phdrs[i].p_flags & PF_R)) | |
8d6337fe RM |
1721 | { |
1722 | bfd_vma start = i_phdrs[i].p_offset & -i_phdrs[i].p_align; | |
1723 | bfd_vma end = (i_phdrs[i].p_offset + i_phdrs[i].p_filesz | |
1724 | + i_phdrs[i].p_align - 1) & -i_phdrs[i].p_align; | |
1725 | if (end > (bfd_vma) contents_size) | |
1726 | end = contents_size; | |
1727 | err = target_read_memory ((loadbase + i_phdrs[i].p_vaddr) | |
1728 | & -i_phdrs[i].p_align, | |
1729 | contents + start, end - start); | |
1730 | if (err) | |
1731 | { | |
1732 | free (x_phdrs); | |
1733 | free (contents); | |
1734 | bfd_set_error (bfd_error_system_call); | |
1735 | errno = err; | |
1736 | return NULL; | |
1737 | } | |
1738 | } | |
1739 | free (x_phdrs); | |
1740 | ||
1741 | /* If the segments visible in memory didn't include the section headers, | |
1742 | then clear them from the file header. */ | |
1743 | if ((bfd_vma) contents_size < (i_ehdr.e_shoff | |
1744 | + i_ehdr.e_shnum * i_ehdr.e_shentsize)) | |
1745 | { | |
1746 | memset (&x_ehdr.e_shoff, 0, sizeof x_ehdr.e_shoff); | |
1747 | memset (&x_ehdr.e_shnum, 0, sizeof x_ehdr.e_shnum); | |
1748 | memset (&x_ehdr.e_shstrndx, 0, sizeof x_ehdr.e_shstrndx); | |
1749 | } | |
1750 | ||
1751 | /* This will normally have been in the first PT_LOAD segment. But it | |
1752 | conceivably could be missing, and we might have just changed it. */ | |
1753 | memcpy (contents, &x_ehdr, sizeof x_ehdr); | |
1754 | ||
1755 | /* Now we have a memory image of the ELF file contents. Make a BFD. */ | |
268b6b39 | 1756 | bim = bfd_malloc (sizeof (struct bfd_in_memory)); |
8d6337fe RM |
1757 | if (bim == NULL) |
1758 | { | |
1759 | free (contents); | |
1760 | bfd_set_error (bfd_error_no_memory); | |
1761 | return NULL; | |
1762 | } | |
1763 | nbfd = _bfd_new_bfd (); | |
1764 | if (nbfd == NULL) | |
1765 | { | |
1766 | free (bim); | |
1767 | free (contents); | |
1768 | bfd_set_error (bfd_error_no_memory); | |
1769 | return NULL; | |
1770 | } | |
1771 | nbfd->filename = "<in-memory>"; | |
1772 | nbfd->xvec = templ->xvec; | |
1773 | bim->size = contents_size; | |
1774 | bim->buffer = contents; | |
268b6b39 | 1775 | nbfd->iostream = bim; |
8d6337fe RM |
1776 | nbfd->flags = BFD_IN_MEMORY; |
1777 | nbfd->direction = read_direction; | |
1778 | nbfd->mtime = time (NULL); | |
1779 | nbfd->mtime_set = TRUE; | |
1780 | ||
1781 | if (loadbasep) | |
1782 | *loadbasep = loadbase; | |
1783 | return nbfd; | |
1784 | } | |
1785 | \f | |
252b5132 | 1786 | #include "elfcore.h" |
252b5132 RH |
1787 | \f |
1788 | /* Size-dependent data and functions. */ | |
1789 | const struct elf_size_info NAME(_bfd_elf,size_info) = { | |
1790 | sizeof (Elf_External_Ehdr), | |
1791 | sizeof (Elf_External_Phdr), | |
1792 | sizeof (Elf_External_Shdr), | |
1793 | sizeof (Elf_External_Rel), | |
1794 | sizeof (Elf_External_Rela), | |
1795 | sizeof (Elf_External_Sym), | |
1796 | sizeof (Elf_External_Dyn), | |
1797 | sizeof (Elf_External_Note), | |
70bcb145 | 1798 | 4, |
c7ac6ff8 | 1799 | 1, |
45d6a902 | 1800 | ARCH_SIZE, LOG_FILE_ALIGN, |
252b5132 RH |
1801 | ELFCLASS, EV_CURRENT, |
1802 | elf_write_out_phdrs, | |
1803 | elf_write_shdrs_and_ehdr, | |
b9f66672 | 1804 | elf_write_relocs, |
73ff0d56 | 1805 | elf_swap_symbol_in, |
252b5132 RH |
1806 | elf_swap_symbol_out, |
1807 | elf_slurp_reloc_table, | |
1808 | elf_slurp_symbol_table, | |
c7ac6ff8 MM |
1809 | elf_swap_dyn_in, |
1810 | elf_swap_dyn_out, | |
947216bf AM |
1811 | elf_swap_reloc_in, |
1812 | elf_swap_reloc_out, | |
1813 | elf_swap_reloca_in, | |
1814 | elf_swap_reloca_out | |
252b5132 | 1815 | }; |