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244ffee7 | 1 | /* ELF executable support for BFD. |
53d3ce37 | 2 | Copyright 1991, 92, 93, 94, 95, 96, 97, 1998 Free Software Foundation, Inc. |
244ffee7 JK |
3 | |
4 | Written by Fred Fish @ Cygnus Support, from information published | |
5 | in "UNIX System V Release 4, Programmers Guide: ANSI C and | |
6 | Programming Support Tools". Sufficient support for gdb. | |
7 | ||
8 | Rewritten by Mark Eichin @ Cygnus Support, from information | |
9 | published in "System V Application Binary Interface", chapters 4 | |
10 | and 5, as well as the various "Processor Supplement" documents | |
11 | derived from it. Added support for assembler and other object file | |
12 | utilities. Further work done by Ken Raeburn (Cygnus Support), Michael | |
13 | Meissner (Open Software Foundation), and Peter Hoogenboom (University | |
14 | of Utah) to finish and extend this. | |
15 | ||
16 | This file is part of BFD, the Binary File Descriptor library. | |
17 | ||
18 | This program is free software; you can redistribute it and/or modify | |
19 | it under the terms of the GNU General Public License as published by | |
20 | the Free Software Foundation; either version 2 of the License, or | |
21 | (at your option) any later version. | |
22 | ||
23 | This program is distributed in the hope that it will be useful, | |
24 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | GNU General Public License for more details. | |
27 | ||
28 | You should have received a copy of the GNU General Public License | |
29 | along with this program; if not, write to the Free Software | |
b818a325 | 30 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
244ffee7 | 31 | |
244ffee7 JK |
32 | /* Problems and other issues to resolve. |
33 | ||
34 | (1) BFD expects there to be some fixed number of "sections" in | |
35 | the object file. I.E. there is a "section_count" variable in the | |
36 | bfd structure which contains the number of sections. However, ELF | |
37 | supports multiple "views" of a file. In particular, with current | |
38 | implementations, executable files typically have two tables, a | |
39 | program header table and a section header table, both of which | |
40 | partition the executable. | |
41 | ||
42 | In ELF-speak, the "linking view" of the file uses the section header | |
43 | table to access "sections" within the file, and the "execution view" | |
44 | uses the program header table to access "segments" within the file. | |
45 | "Segments" typically may contain all the data from one or more | |
46 | "sections". | |
47 | ||
48 | Note that the section header table is optional in ELF executables, | |
49 | but it is this information that is most useful to gdb. If the | |
50 | section header table is missing, then gdb should probably try | |
51 | to make do with the program header table. (FIXME) | |
52 | ||
6a3eb9b6 KR |
53 | (2) The code in this file is compiled twice, once in 32-bit mode and |
54 | once in 64-bit mode. More of it should be made size-independent | |
55 | and moved into elf.c. | |
56 | ||
d24928c0 KR |
57 | (3) ELF section symbols are handled rather sloppily now. This should |
58 | be cleaned up, and ELF section symbols reconciled with BFD section | |
59 | symbols. | |
5546cc7e KR |
60 | |
61 | (4) We need a published spec for 64-bit ELF. We've got some stuff here | |
62 | that we're using for SPARC V9 64-bit chips, but don't assume that | |
63 | it's cast in stone. | |
d24928c0 | 64 | */ |
244ffee7 | 65 | |
244ffee7 JK |
66 | #include "bfd.h" |
67 | #include "sysdep.h" | |
6ec3bb6a | 68 | #include "bfdlink.h" |
244ffee7 | 69 | #include "libbfd.h" |
6ab826bd | 70 | #include "elf-bfd.h" |
e549b1d2 | 71 | #include "fnmatch.h" |
244ffee7 | 72 | |
32090b8e | 73 | /* Renaming structures, typedefs, macros and functions to be size-specific. */ |
244ffee7 | 74 | #define Elf_External_Ehdr NAME(Elf,External_Ehdr) |
244ffee7 | 75 | #define Elf_External_Sym NAME(Elf,External_Sym) |
244ffee7 | 76 | #define Elf_External_Shdr NAME(Elf,External_Shdr) |
244ffee7 | 77 | #define Elf_External_Phdr NAME(Elf,External_Phdr) |
244ffee7 JK |
78 | #define Elf_External_Rel NAME(Elf,External_Rel) |
79 | #define Elf_External_Rela NAME(Elf,External_Rela) | |
013dec1a | 80 | #define Elf_External_Dyn NAME(Elf,External_Dyn) |
244ffee7 | 81 | |
244ffee7 JK |
82 | #define elf_core_file_failing_command NAME(bfd_elf,core_file_failing_command) |
83 | #define elf_core_file_failing_signal NAME(bfd_elf,core_file_failing_signal) | |
cb71adf1 PS |
84 | #define elf_core_file_matches_executable_p \ |
85 | NAME(bfd_elf,core_file_matches_executable_p) | |
244ffee7 JK |
86 | #define elf_object_p NAME(bfd_elf,object_p) |
87 | #define elf_core_file_p NAME(bfd_elf,core_file_p) | |
244ffee7 | 88 | #define elf_get_symtab_upper_bound NAME(bfd_elf,get_symtab_upper_bound) |
cb71adf1 PS |
89 | #define elf_get_dynamic_symtab_upper_bound \ |
90 | NAME(bfd_elf,get_dynamic_symtab_upper_bound) | |
013dec1a ILT |
91 | #define elf_swap_reloc_in NAME(bfd_elf,swap_reloc_in) |
92 | #define elf_swap_reloca_in NAME(bfd_elf,swap_reloca_in) | |
93 | #define elf_swap_reloc_out NAME(bfd_elf,swap_reloc_out) | |
94 | #define elf_swap_reloca_out NAME(bfd_elf,swap_reloca_out) | |
71edd06d ILT |
95 | #define elf_swap_symbol_in NAME(bfd_elf,swap_symbol_in) |
96 | #define elf_swap_symbol_out NAME(bfd_elf,swap_symbol_out) | |
2b71e1e4 ILT |
97 | #define elf_swap_phdr_in NAME(bfd_elf,swap_phdr_in) |
98 | #define elf_swap_phdr_out NAME(bfd_elf,swap_phdr_out) | |
013dec1a ILT |
99 | #define elf_swap_dyn_in NAME(bfd_elf,swap_dyn_in) |
100 | #define elf_swap_dyn_out NAME(bfd_elf,swap_dyn_out) | |
244ffee7 JK |
101 | #define elf_get_reloc_upper_bound NAME(bfd_elf,get_reloc_upper_bound) |
102 | #define elf_canonicalize_reloc NAME(bfd_elf,canonicalize_reloc) | |
d1bf45aa | 103 | #define elf_slurp_symbol_table NAME(bfd_elf,slurp_symbol_table) |
244ffee7 | 104 | #define elf_get_symtab NAME(bfd_elf,get_symtab) |
cb71adf1 PS |
105 | #define elf_canonicalize_dynamic_symtab \ |
106 | NAME(bfd_elf,canonicalize_dynamic_symtab) | |
244ffee7 JK |
107 | #define elf_make_empty_symbol NAME(bfd_elf,make_empty_symbol) |
108 | #define elf_get_symbol_info NAME(bfd_elf,get_symbol_info) | |
244ffee7 JK |
109 | #define elf_get_lineno NAME(bfd_elf,get_lineno) |
110 | #define elf_set_arch_mach NAME(bfd_elf,set_arch_mach) | |
111 | #define elf_find_nearest_line NAME(bfd_elf,find_nearest_line) | |
112 | #define elf_sizeof_headers NAME(bfd_elf,sizeof_headers) | |
113 | #define elf_set_section_contents NAME(bfd_elf,set_section_contents) | |
114 | #define elf_no_info_to_howto NAME(bfd_elf,no_info_to_howto) | |
115 | #define elf_no_info_to_howto_rel NAME(bfd_elf,no_info_to_howto_rel) | |
f035cc47 | 116 | #define elf_find_section NAME(bfd_elf,find_section) |
6ec3bb6a | 117 | #define elf_bfd_link_add_symbols NAME(bfd_elf,bfd_link_add_symbols) |
013dec1a | 118 | #define elf_add_dynamic_entry NAME(bfd_elf,add_dynamic_entry) |
d1bf45aa ILT |
119 | #define elf_write_shdrs_and_ehdr NAME(bfd_elf,write_shdrs_and_ehdr) |
120 | #define elf_write_out_phdrs NAME(bfd_elf,write_out_phdrs) | |
374d2ef9 ILT |
121 | #define elf_link_create_dynamic_sections \ |
122 | NAME(bfd_elf,link_create_dynamic_sections) | |
ede4eed4 | 123 | #define elf_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol |
6ec3bb6a | 124 | #define elf_bfd_final_link NAME(bfd_elf,bfd_final_link) |
c9e5279f ILT |
125 | #define elf_create_pointer_linker_section NAME(bfd_elf,create_pointer_linker_section) |
126 | #define elf_finish_pointer_linker_section NAME(bfd_elf,finish_pointer_linker_section) | |
244ffee7 | 127 | |
6a3eb9b6 KR |
128 | #if ARCH_SIZE == 64 |
129 | #define ELF_R_INFO(X,Y) ELF64_R_INFO(X,Y) | |
130 | #define ELF_R_SYM(X) ELF64_R_SYM(X) | |
6ec3bb6a | 131 | #define ELF_R_TYPE(X) ELF64_R_TYPE(X) |
32090b8e | 132 | #define ELFCLASS ELFCLASS64 |
f035cc47 | 133 | #define FILE_ALIGN 8 |
013dec1a | 134 | #define LOG_FILE_ALIGN 3 |
6a3eb9b6 KR |
135 | #endif |
136 | #if ARCH_SIZE == 32 | |
137 | #define ELF_R_INFO(X,Y) ELF32_R_INFO(X,Y) | |
138 | #define ELF_R_SYM(X) ELF32_R_SYM(X) | |
6ec3bb6a | 139 | #define ELF_R_TYPE(X) ELF32_R_TYPE(X) |
32090b8e | 140 | #define ELFCLASS ELFCLASS32 |
f035cc47 | 141 | #define FILE_ALIGN 4 |
013dec1a | 142 | #define LOG_FILE_ALIGN 2 |
244ffee7 JK |
143 | #endif |
144 | ||
53d3ce37 | 145 | /* Static functions */ |
244ffee7 | 146 | |
d1bf45aa ILT |
147 | static void elf_swap_ehdr_in |
148 | PARAMS ((bfd *, const Elf_External_Ehdr *, Elf_Internal_Ehdr *)); | |
149 | static void elf_swap_ehdr_out | |
150 | PARAMS ((bfd *, const Elf_Internal_Ehdr *, Elf_External_Ehdr *)); | |
151 | static void elf_swap_shdr_in | |
152 | PARAMS ((bfd *, const Elf_External_Shdr *, Elf_Internal_Shdr *)); | |
153 | static void elf_swap_shdr_out | |
154 | PARAMS ((bfd *, const Elf_Internal_Shdr *, Elf_External_Shdr *)); | |
155 | ||
ede4eed4 | 156 | #define elf_stringtab_init _bfd_elf_stringtab_init |
244ffee7 | 157 | |
ede4eed4 | 158 | #define section_from_elf_index bfd_section_from_elf_index |
ede4eed4 | 159 | |
e35765a9 ILT |
160 | static boolean elf_slurp_reloc_table |
161 | PARAMS ((bfd *, asection *, asymbol **, boolean)); | |
ea617174 | 162 | |
0ef449df | 163 | static void write_relocs PARAMS ((bfd *, asection *, PTR)); |
ede4eed4 | 164 | |
53d3ce37 TT |
165 | static boolean elf_file_p PARAMS ((Elf_External_Ehdr *)); |
166 | ||
6a3eb9b6 | 167 | #ifdef DEBUG |
eb4267a3 | 168 | static void elf_debug_section PARAMS ((int, Elf_Internal_Shdr *)); |
6a3eb9b6 | 169 | static void elf_debug_file PARAMS ((Elf_Internal_Ehdr *)); |
0ef449df | 170 | static char *elf_symbol_flags PARAMS ((flagword)); |
6a3eb9b6 | 171 | #endif |
32090b8e KR |
172 | \f |
173 | /* Structure swapping routines */ | |
174 | ||
6a3eb9b6 KR |
175 | /* Should perhaps use put_offset, put_word, etc. For now, the two versions |
176 | can be handled by explicitly specifying 32 bits or "the long type". */ | |
238ac6ec KR |
177 | #if ARCH_SIZE == 64 |
178 | #define put_word bfd_h_put_64 | |
53d3ce37 | 179 | #define put_signed_word bfd_h_put_signed_64 |
238ac6ec | 180 | #define get_word bfd_h_get_64 |
53d3ce37 | 181 | #define get_signed_word bfd_h_get_signed_64 |
238ac6ec KR |
182 | #endif |
183 | #if ARCH_SIZE == 32 | |
184 | #define put_word bfd_h_put_32 | |
53d3ce37 | 185 | #define put_signed_word bfd_h_put_signed_32 |
238ac6ec | 186 | #define get_word bfd_h_get_32 |
53d3ce37 | 187 | #define get_signed_word bfd_h_get_signed_32 |
238ac6ec KR |
188 | #endif |
189 | ||
244ffee7 JK |
190 | /* Translate an ELF symbol in external format into an ELF symbol in internal |
191 | format. */ | |
192 | ||
71edd06d | 193 | void |
1c6042ee ILT |
194 | elf_swap_symbol_in (abfd, src, dst) |
195 | bfd *abfd; | |
d1bf45aa | 196 | const Elf_External_Sym *src; |
1c6042ee | 197 | Elf_Internal_Sym *dst; |
244ffee7 JK |
198 | { |
199 | dst->st_name = bfd_h_get_32 (abfd, (bfd_byte *) src->st_name); | |
238ac6ec KR |
200 | dst->st_value = get_word (abfd, (bfd_byte *) src->st_value); |
201 | dst->st_size = get_word (abfd, (bfd_byte *) src->st_size); | |
244ffee7 JK |
202 | dst->st_info = bfd_h_get_8 (abfd, (bfd_byte *) src->st_info); |
203 | dst->st_other = bfd_h_get_8 (abfd, (bfd_byte *) src->st_other); | |
204 | dst->st_shndx = bfd_h_get_16 (abfd, (bfd_byte *) src->st_shndx); | |
205 | } | |
206 | ||
207 | /* Translate an ELF symbol in internal format into an ELF symbol in external | |
208 | format. */ | |
209 | ||
71edd06d | 210 | void |
ede4eed4 | 211 | elf_swap_symbol_out (abfd, src, cdst) |
1c6042ee | 212 | bfd *abfd; |
d1bf45aa | 213 | const Elf_Internal_Sym *src; |
b818a325 | 214 | PTR cdst; |
244ffee7 | 215 | { |
ede4eed4 | 216 | Elf_External_Sym *dst = (Elf_External_Sym *) cdst; |
244ffee7 | 217 | bfd_h_put_32 (abfd, src->st_name, dst->st_name); |
238ac6ec KR |
218 | put_word (abfd, src->st_value, dst->st_value); |
219 | put_word (abfd, src->st_size, dst->st_size); | |
244ffee7 JK |
220 | bfd_h_put_8 (abfd, src->st_info, dst->st_info); |
221 | bfd_h_put_8 (abfd, src->st_other, dst->st_other); | |
222 | bfd_h_put_16 (abfd, src->st_shndx, dst->st_shndx); | |
223 | } | |
224 | ||
225 | ||
226 | /* Translate an ELF file header in external format into an ELF file header in | |
227 | internal format. */ | |
228 | ||
229 | static void | |
1c6042ee ILT |
230 | elf_swap_ehdr_in (abfd, src, dst) |
231 | bfd *abfd; | |
d1bf45aa | 232 | const Elf_External_Ehdr *src; |
1c6042ee | 233 | Elf_Internal_Ehdr *dst; |
244ffee7 JK |
234 | { |
235 | memcpy (dst->e_ident, src->e_ident, EI_NIDENT); | |
236 | dst->e_type = bfd_h_get_16 (abfd, (bfd_byte *) src->e_type); | |
237 | dst->e_machine = bfd_h_get_16 (abfd, (bfd_byte *) src->e_machine); | |
238 | dst->e_version = bfd_h_get_32 (abfd, (bfd_byte *) src->e_version); | |
238ac6ec KR |
239 | dst->e_entry = get_word (abfd, (bfd_byte *) src->e_entry); |
240 | dst->e_phoff = get_word (abfd, (bfd_byte *) src->e_phoff); | |
241 | dst->e_shoff = get_word (abfd, (bfd_byte *) src->e_shoff); | |
244ffee7 JK |
242 | dst->e_flags = bfd_h_get_32 (abfd, (bfd_byte *) src->e_flags); |
243 | dst->e_ehsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_ehsize); | |
244 | dst->e_phentsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_phentsize); | |
245 | dst->e_phnum = bfd_h_get_16 (abfd, (bfd_byte *) src->e_phnum); | |
246 | dst->e_shentsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shentsize); | |
247 | dst->e_shnum = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shnum); | |
248 | dst->e_shstrndx = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shstrndx); | |
249 | } | |
250 | ||
251 | /* Translate an ELF file header in internal format into an ELF file header in | |
252 | external format. */ | |
253 | ||
254 | static void | |
1c6042ee ILT |
255 | elf_swap_ehdr_out (abfd, src, dst) |
256 | bfd *abfd; | |
d1bf45aa | 257 | const Elf_Internal_Ehdr *src; |
1c6042ee | 258 | Elf_External_Ehdr *dst; |
244ffee7 JK |
259 | { |
260 | memcpy (dst->e_ident, src->e_ident, EI_NIDENT); | |
261 | /* note that all elements of dst are *arrays of unsigned char* already... */ | |
262 | bfd_h_put_16 (abfd, src->e_type, dst->e_type); | |
263 | bfd_h_put_16 (abfd, src->e_machine, dst->e_machine); | |
264 | bfd_h_put_32 (abfd, src->e_version, dst->e_version); | |
238ac6ec KR |
265 | put_word (abfd, src->e_entry, dst->e_entry); |
266 | put_word (abfd, src->e_phoff, dst->e_phoff); | |
267 | put_word (abfd, src->e_shoff, dst->e_shoff); | |
244ffee7 JK |
268 | bfd_h_put_32 (abfd, src->e_flags, dst->e_flags); |
269 | bfd_h_put_16 (abfd, src->e_ehsize, dst->e_ehsize); | |
270 | bfd_h_put_16 (abfd, src->e_phentsize, dst->e_phentsize); | |
271 | bfd_h_put_16 (abfd, src->e_phnum, dst->e_phnum); | |
272 | bfd_h_put_16 (abfd, src->e_shentsize, dst->e_shentsize); | |
273 | bfd_h_put_16 (abfd, src->e_shnum, dst->e_shnum); | |
274 | bfd_h_put_16 (abfd, src->e_shstrndx, dst->e_shstrndx); | |
275 | } | |
276 | ||
277 | ||
278 | /* Translate an ELF section header table entry in external format into an | |
279 | ELF section header table entry in internal format. */ | |
280 | ||
281 | static void | |
1c6042ee ILT |
282 | elf_swap_shdr_in (abfd, src, dst) |
283 | bfd *abfd; | |
d1bf45aa | 284 | const Elf_External_Shdr *src; |
1c6042ee | 285 | Elf_Internal_Shdr *dst; |
244ffee7 JK |
286 | { |
287 | dst->sh_name = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_name); | |
288 | dst->sh_type = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_type); | |
238ac6ec KR |
289 | dst->sh_flags = get_word (abfd, (bfd_byte *) src->sh_flags); |
290 | dst->sh_addr = get_word (abfd, (bfd_byte *) src->sh_addr); | |
291 | dst->sh_offset = get_word (abfd, (bfd_byte *) src->sh_offset); | |
292 | dst->sh_size = get_word (abfd, (bfd_byte *) src->sh_size); | |
244ffee7 JK |
293 | dst->sh_link = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_link); |
294 | dst->sh_info = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_info); | |
238ac6ec KR |
295 | dst->sh_addralign = get_word (abfd, (bfd_byte *) src->sh_addralign); |
296 | dst->sh_entsize = get_word (abfd, (bfd_byte *) src->sh_entsize); | |
24f13b03 ILT |
297 | dst->bfd_section = NULL; |
298 | dst->contents = NULL; | |
244ffee7 JK |
299 | } |
300 | ||
301 | /* Translate an ELF section header table entry in internal format into an | |
302 | ELF section header table entry in external format. */ | |
303 | ||
304 | static void | |
1c6042ee ILT |
305 | elf_swap_shdr_out (abfd, src, dst) |
306 | bfd *abfd; | |
d1bf45aa | 307 | const Elf_Internal_Shdr *src; |
1c6042ee | 308 | Elf_External_Shdr *dst; |
244ffee7 JK |
309 | { |
310 | /* note that all elements of dst are *arrays of unsigned char* already... */ | |
311 | bfd_h_put_32 (abfd, src->sh_name, dst->sh_name); | |
312 | bfd_h_put_32 (abfd, src->sh_type, dst->sh_type); | |
238ac6ec KR |
313 | put_word (abfd, src->sh_flags, dst->sh_flags); |
314 | put_word (abfd, src->sh_addr, dst->sh_addr); | |
315 | put_word (abfd, src->sh_offset, dst->sh_offset); | |
316 | put_word (abfd, src->sh_size, dst->sh_size); | |
244ffee7 JK |
317 | bfd_h_put_32 (abfd, src->sh_link, dst->sh_link); |
318 | bfd_h_put_32 (abfd, src->sh_info, dst->sh_info); | |
238ac6ec KR |
319 | put_word (abfd, src->sh_addralign, dst->sh_addralign); |
320 | put_word (abfd, src->sh_entsize, dst->sh_entsize); | |
244ffee7 JK |
321 | } |
322 | ||
323 | ||
324 | /* Translate an ELF program header table entry in external format into an | |
325 | ELF program header table entry in internal format. */ | |
326 | ||
2b71e1e4 | 327 | void |
1c6042ee ILT |
328 | elf_swap_phdr_in (abfd, src, dst) |
329 | bfd *abfd; | |
d1bf45aa | 330 | const Elf_External_Phdr *src; |
1c6042ee | 331 | Elf_Internal_Phdr *dst; |
244ffee7 JK |
332 | { |
333 | dst->p_type = bfd_h_get_32 (abfd, (bfd_byte *) src->p_type); | |
244ffee7 | 334 | dst->p_flags = bfd_h_get_32 (abfd, (bfd_byte *) src->p_flags); |
238ac6ec KR |
335 | dst->p_offset = get_word (abfd, (bfd_byte *) src->p_offset); |
336 | dst->p_vaddr = get_word (abfd, (bfd_byte *) src->p_vaddr); | |
337 | dst->p_paddr = get_word (abfd, (bfd_byte *) src->p_paddr); | |
338 | dst->p_filesz = get_word (abfd, (bfd_byte *) src->p_filesz); | |
339 | dst->p_memsz = get_word (abfd, (bfd_byte *) src->p_memsz); | |
340 | dst->p_align = get_word (abfd, (bfd_byte *) src->p_align); | |
244ffee7 JK |
341 | } |
342 | ||
2b71e1e4 | 343 | void |
1c6042ee ILT |
344 | elf_swap_phdr_out (abfd, src, dst) |
345 | bfd *abfd; | |
d1bf45aa | 346 | const Elf_Internal_Phdr *src; |
1c6042ee | 347 | Elf_External_Phdr *dst; |
244ffee7 JK |
348 | { |
349 | /* note that all elements of dst are *arrays of unsigned char* already... */ | |
350 | bfd_h_put_32 (abfd, src->p_type, dst->p_type); | |
94dbb655 KR |
351 | put_word (abfd, src->p_offset, dst->p_offset); |
352 | put_word (abfd, src->p_vaddr, dst->p_vaddr); | |
353 | put_word (abfd, src->p_paddr, dst->p_paddr); | |
354 | put_word (abfd, src->p_filesz, dst->p_filesz); | |
355 | put_word (abfd, src->p_memsz, dst->p_memsz); | |
244ffee7 | 356 | bfd_h_put_32 (abfd, src->p_flags, dst->p_flags); |
94dbb655 | 357 | put_word (abfd, src->p_align, dst->p_align); |
244ffee7 JK |
358 | } |
359 | ||
360 | /* Translate an ELF reloc from external format to internal format. */ | |
013dec1a | 361 | INLINE void |
1c6042ee ILT |
362 | elf_swap_reloc_in (abfd, src, dst) |
363 | bfd *abfd; | |
d1bf45aa | 364 | const Elf_External_Rel *src; |
1c6042ee | 365 | Elf_Internal_Rel *dst; |
244ffee7 | 366 | { |
94dbb655 KR |
367 | dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset); |
368 | dst->r_info = get_word (abfd, (bfd_byte *) src->r_info); | |
244ffee7 JK |
369 | } |
370 | ||
013dec1a | 371 | INLINE void |
1c6042ee ILT |
372 | elf_swap_reloca_in (abfd, src, dst) |
373 | bfd *abfd; | |
d1bf45aa | 374 | const Elf_External_Rela *src; |
1c6042ee | 375 | Elf_Internal_Rela *dst; |
244ffee7 | 376 | { |
94dbb655 KR |
377 | dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset); |
378 | dst->r_info = get_word (abfd, (bfd_byte *) src->r_info); | |
53d3ce37 | 379 | dst->r_addend = get_signed_word (abfd, (bfd_byte *) src->r_addend); |
244ffee7 JK |
380 | } |
381 | ||
382 | /* Translate an ELF reloc from internal format to external format. */ | |
013dec1a | 383 | INLINE void |
1c6042ee ILT |
384 | elf_swap_reloc_out (abfd, src, dst) |
385 | bfd *abfd; | |
d1bf45aa | 386 | const Elf_Internal_Rel *src; |
1c6042ee | 387 | Elf_External_Rel *dst; |
244ffee7 | 388 | { |
94dbb655 KR |
389 | put_word (abfd, src->r_offset, dst->r_offset); |
390 | put_word (abfd, src->r_info, dst->r_info); | |
244ffee7 JK |
391 | } |
392 | ||
013dec1a | 393 | INLINE void |
1c6042ee ILT |
394 | elf_swap_reloca_out (abfd, src, dst) |
395 | bfd *abfd; | |
d1bf45aa | 396 | const Elf_Internal_Rela *src; |
1c6042ee | 397 | Elf_External_Rela *dst; |
244ffee7 | 398 | { |
94dbb655 KR |
399 | put_word (abfd, src->r_offset, dst->r_offset); |
400 | put_word (abfd, src->r_info, dst->r_info); | |
53d3ce37 | 401 | put_signed_word (abfd, src->r_addend, dst->r_addend); |
244ffee7 | 402 | } |
32090b8e | 403 | |
013dec1a | 404 | INLINE void |
02fcd126 | 405 | elf_swap_dyn_in (abfd, p, dst) |
013dec1a | 406 | bfd *abfd; |
02fcd126 | 407 | const PTR p; |
013dec1a ILT |
408 | Elf_Internal_Dyn *dst; |
409 | { | |
02fcd126 ILT |
410 | const Elf_External_Dyn *src = (const Elf_External_Dyn *) p; |
411 | ||
013dec1a ILT |
412 | dst->d_tag = get_word (abfd, src->d_tag); |
413 | dst->d_un.d_val = get_word (abfd, src->d_un.d_val); | |
414 | } | |
1c6042ee | 415 | |
013dec1a ILT |
416 | INLINE void |
417 | elf_swap_dyn_out (abfd, src, dst) | |
418 | bfd *abfd; | |
419 | const Elf_Internal_Dyn *src; | |
420 | Elf_External_Dyn *dst; | |
421 | { | |
422 | put_word (abfd, src->d_tag, dst->d_tag); | |
423 | put_word (abfd, src->d_un.d_val, dst->d_un.d_val); | |
424 | } | |
425 | \f | |
32090b8e KR |
426 | /* ELF .o/exec file reading */ |
427 | ||
244ffee7 | 428 | |
32090b8e | 429 | /* Begin processing a given object. |
244ffee7 | 430 | |
32090b8e KR |
431 | First we validate the file by reading in the ELF header and checking |
432 | the magic number. */ | |
433 | ||
434 | static INLINE boolean | |
1c6042ee ILT |
435 | elf_file_p (x_ehdrp) |
436 | Elf_External_Ehdr *x_ehdrp; | |
244ffee7 | 437 | { |
32090b8e KR |
438 | return ((x_ehdrp->e_ident[EI_MAG0] == ELFMAG0) |
439 | && (x_ehdrp->e_ident[EI_MAG1] == ELFMAG1) | |
440 | && (x_ehdrp->e_ident[EI_MAG2] == ELFMAG2) | |
441 | && (x_ehdrp->e_ident[EI_MAG3] == ELFMAG3)); | |
442 | } | |
244ffee7 | 443 | |
d24928c0 KR |
444 | /* Check to see if the file associated with ABFD matches the target vector |
445 | that ABFD points to. | |
446 | ||
447 | Note that we may be called several times with the same ABFD, but different | |
448 | target vectors, most of which will not match. We have to avoid leaving | |
449 | any side effects in ABFD, or any data it points to (like tdata), if the | |
6ec3bb6a | 450 | file does not match the target vector. */ |
d24928c0 | 451 | |
2f3508ad | 452 | const bfd_target * |
1c6042ee ILT |
453 | elf_object_p (abfd) |
454 | bfd *abfd; | |
244ffee7 | 455 | { |
32090b8e KR |
456 | Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ |
457 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
458 | Elf_External_Shdr x_shdr; /* Section header table entry, external form */ | |
6ec3bb6a | 459 | Elf_Internal_Shdr *i_shdrp = NULL; /* Section header table, internal form */ |
68241b2b | 460 | unsigned int shindex; |
32090b8e | 461 | char *shstrtab; /* Internal copy of section header stringtab */ |
062189c6 | 462 | struct elf_backend_data *ebd; |
d24928c0 | 463 | struct elf_obj_tdata *preserved_tdata = elf_tdata (abfd); |
6ec3bb6a | 464 | struct elf_obj_tdata *new_tdata = NULL; |
e549b1d2 | 465 | asection *s; |
244ffee7 | 466 | |
32090b8e KR |
467 | /* Read in the ELF header in external format. */ |
468 | ||
469 | if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr)) | |
25057836 JL |
470 | { |
471 | if (bfd_get_error () != bfd_error_system_call) | |
472 | goto got_wrong_format_error; | |
473 | else | |
474 | goto got_no_match; | |
475 | } | |
244ffee7 | 476 | |
32090b8e KR |
477 | /* Now check to see if we have a valid ELF file, and one that BFD can |
478 | make use of. The magic number must match, the address size ('class') | |
479 | and byte-swapping must match our XVEC entry, and it must have a | |
480 | section header table (FIXME: See comments re sections at top of this | |
481 | file). */ | |
244ffee7 | 482 | |
d24928c0 KR |
483 | if ((elf_file_p (&x_ehdr) == false) || |
484 | (x_ehdr.e_ident[EI_VERSION] != EV_CURRENT) || | |
485 | (x_ehdr.e_ident[EI_CLASS] != ELFCLASS)) | |
486 | goto got_wrong_format_error; | |
244ffee7 | 487 | |
d24928c0 | 488 | /* Check that file's byte order matches xvec's */ |
32090b8e | 489 | switch (x_ehdr.e_ident[EI_DATA]) |
244ffee7 | 490 | { |
32090b8e | 491 | case ELFDATA2MSB: /* Big-endian */ |
02fcd126 | 492 | if (! bfd_header_big_endian (abfd)) |
d24928c0 | 493 | goto got_wrong_format_error; |
32090b8e KR |
494 | break; |
495 | case ELFDATA2LSB: /* Little-endian */ | |
02fcd126 | 496 | if (! bfd_header_little_endian (abfd)) |
d24928c0 | 497 | goto got_wrong_format_error; |
32090b8e KR |
498 | break; |
499 | case ELFDATANONE: /* No data encoding specified */ | |
500 | default: /* Unknown data encoding specified */ | |
d24928c0 | 501 | goto got_wrong_format_error; |
244ffee7 | 502 | } |
244ffee7 | 503 | |
32090b8e | 504 | /* Allocate an instance of the elf_obj_tdata structure and hook it up to |
6ec3bb6a | 505 | the tdata pointer in the bfd. */ |
244ffee7 | 506 | |
6ec3bb6a ILT |
507 | new_tdata = ((struct elf_obj_tdata *) |
508 | bfd_zalloc (abfd, sizeof (struct elf_obj_tdata))); | |
509 | if (new_tdata == NULL) | |
a9713b91 | 510 | goto got_no_match; |
6ec3bb6a | 511 | elf_tdata (abfd) = new_tdata; |
244ffee7 | 512 | |
32090b8e KR |
513 | /* Now that we know the byte order, swap in the rest of the header */ |
514 | i_ehdrp = elf_elfheader (abfd); | |
515 | elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp); | |
516 | #if DEBUG & 1 | |
517 | elf_debug_file (i_ehdrp); | |
244ffee7 JK |
518 | #endif |
519 | ||
32090b8e KR |
520 | /* If there is no section header table, we're hosed. */ |
521 | if (i_ehdrp->e_shoff == 0) | |
d24928c0 | 522 | goto got_wrong_format_error; |
244ffee7 | 523 | |
062189c6 ILT |
524 | /* As a simple sanity check, verify that the what BFD thinks is the |
525 | size of each section header table entry actually matches the size | |
526 | recorded in the file. */ | |
527 | if (i_ehdrp->e_shentsize != sizeof (x_shdr)) | |
528 | goto got_wrong_format_error; | |
529 | ||
530 | ebd = get_elf_backend_data (abfd); | |
531 | ||
532 | /* Check that the ELF e_machine field matches what this particular | |
533 | BFD format expects. */ | |
df168c35 DE |
534 | if (ebd->elf_machine_code != i_ehdrp->e_machine |
535 | && (ebd->elf_machine_alt1 == 0 || i_ehdrp->e_machine != ebd->elf_machine_alt1) | |
536 | && (ebd->elf_machine_alt2 == 0 || i_ehdrp->e_machine != ebd->elf_machine_alt2)) | |
062189c6 | 537 | { |
2f3508ad | 538 | const bfd_target * const *target_ptr; |
062189c6 ILT |
539 | |
540 | if (ebd->elf_machine_code != EM_NONE) | |
541 | goto got_wrong_format_error; | |
542 | ||
543 | /* This is the generic ELF target. Let it match any ELF target | |
544 | for which we do not have a specific backend. */ | |
f4bd7a8f | 545 | for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++) |
062189c6 ILT |
546 | { |
547 | struct elf_backend_data *back; | |
548 | ||
549 | if ((*target_ptr)->flavour != bfd_target_elf_flavour) | |
550 | continue; | |
551 | back = (struct elf_backend_data *) (*target_ptr)->backend_data; | |
d1bf45aa ILT |
552 | if (back->elf_machine_code == i_ehdrp->e_machine |
553 | || (back->elf_machine_alt1 != 0 | |
554 | && back->elf_machine_alt1 == i_ehdrp->e_machine) | |
555 | || (back->elf_machine_alt2 != 0 | |
556 | && back->elf_machine_alt2 == i_ehdrp->e_machine)) | |
062189c6 ILT |
557 | { |
558 | /* target_ptr is an ELF backend which matches this | |
559 | object file, so reject the generic ELF target. */ | |
560 | goto got_wrong_format_error; | |
561 | } | |
562 | } | |
563 | } | |
564 | ||
7b8106b4 | 565 | if (i_ehdrp->e_type == ET_EXEC) |
32090b8e | 566 | abfd->flags |= EXEC_P; |
7b8106b4 ILT |
567 | else if (i_ehdrp->e_type == ET_DYN) |
568 | abfd->flags |= DYNAMIC; | |
244ffee7 | 569 | |
fa15568a ILT |
570 | if (i_ehdrp->e_phnum > 0) |
571 | abfd->flags |= D_PAGED; | |
572 | ||
6ec3bb6a ILT |
573 | if (! bfd_default_set_arch_mach (abfd, ebd->arch, 0)) |
574 | goto got_no_match; | |
32090b8e | 575 | |
062189c6 ILT |
576 | /* Remember the entry point specified in the ELF file header. */ |
577 | bfd_get_start_address (abfd) = i_ehdrp->e_entry; | |
32090b8e KR |
578 | |
579 | /* Allocate space for a copy of the section header table in | |
580 | internal form, seek to the section header table in the file, | |
062189c6 | 581 | read it in, and convert it to internal form. */ |
6ec3bb6a ILT |
582 | i_shdrp = ((Elf_Internal_Shdr *) |
583 | bfd_alloc (abfd, sizeof (*i_shdrp) * i_ehdrp->e_shnum)); | |
584 | elf_elfsections (abfd) = ((Elf_Internal_Shdr **) | |
585 | bfd_alloc (abfd, | |
586 | sizeof (i_shdrp) * i_ehdrp->e_shnum)); | |
1c6042ee | 587 | if (!i_shdrp || !elf_elfsections (abfd)) |
a9713b91 | 588 | goto got_no_match; |
6ec3bb6a | 589 | if (bfd_seek (abfd, i_ehdrp->e_shoff, SEEK_SET) != 0) |
25057836 | 590 | goto got_no_match; |
32090b8e | 591 | for (shindex = 0; shindex < i_ehdrp->e_shnum; shindex++) |
244ffee7 | 592 | { |
d24928c0 | 593 | if (bfd_read ((PTR) & x_shdr, sizeof x_shdr, 1, abfd) != sizeof (x_shdr)) |
25057836 | 594 | goto got_no_match; |
32090b8e | 595 | elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex); |
1c6042ee | 596 | elf_elfsections (abfd)[shindex] = i_shdrp + shindex; |
e35765a9 ILT |
597 | |
598 | /* If the section is loaded, but not page aligned, clear | |
599 | D_PAGED. */ | |
600 | if ((i_shdrp[shindex].sh_flags & SHF_ALLOC) != 0 | |
601 | && i_shdrp[shindex].sh_type != SHT_NOBITS | |
602 | && (((i_shdrp[shindex].sh_addr - i_shdrp[shindex].sh_offset) | |
603 | % ebd->maxpagesize) | |
604 | != 0)) | |
605 | abfd->flags &= ~D_PAGED; | |
244ffee7 | 606 | } |
32090b8e | 607 | if (i_ehdrp->e_shstrndx) |
244ffee7 | 608 | { |
2e03ce18 ILT |
609 | if (! bfd_section_from_shdr (abfd, i_ehdrp->e_shstrndx)) |
610 | goto got_no_match; | |
244ffee7 JK |
611 | } |
612 | ||
a9713b91 ILT |
613 | /* Read in the program headers. */ |
614 | if (i_ehdrp->e_phnum == 0) | |
615 | elf_tdata (abfd)->phdr = NULL; | |
616 | else | |
617 | { | |
618 | Elf_Internal_Phdr *i_phdr; | |
619 | unsigned int i; | |
620 | ||
621 | elf_tdata (abfd)->phdr = ((Elf_Internal_Phdr *) | |
622 | bfd_alloc (abfd, | |
623 | (i_ehdrp->e_phnum | |
624 | * sizeof (Elf_Internal_Phdr)))); | |
625 | if (elf_tdata (abfd)->phdr == NULL) | |
626 | goto got_no_match; | |
627 | if (bfd_seek (abfd, i_ehdrp->e_phoff, SEEK_SET) != 0) | |
628 | goto got_no_match; | |
629 | i_phdr = elf_tdata (abfd)->phdr; | |
630 | for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++) | |
631 | { | |
632 | Elf_External_Phdr x_phdr; | |
633 | ||
634 | if (bfd_read ((PTR) &x_phdr, sizeof x_phdr, 1, abfd) | |
635 | != sizeof x_phdr) | |
636 | goto got_no_match; | |
637 | elf_swap_phdr_in (abfd, &x_phdr, i_phdr); | |
638 | } | |
639 | } | |
640 | ||
32090b8e KR |
641 | /* Read in the string table containing the names of the sections. We |
642 | will need the base pointer to this table later. */ | |
643 | /* We read this inline now, so that we don't have to go through | |
644 | bfd_section_from_shdr with it (since this particular strtab is | |
645 | used to find all of the ELF section names.) */ | |
244ffee7 | 646 | |
ede4eed4 | 647 | shstrtab = bfd_elf_get_str_section (abfd, i_ehdrp->e_shstrndx); |
32090b8e | 648 | if (!shstrtab) |
6ec3bb6a | 649 | goto got_no_match; |
244ffee7 | 650 | |
32090b8e KR |
651 | /* Once all of the section headers have been read and converted, we |
652 | can start processing them. Note that the first section header is | |
6ec3bb6a | 653 | a dummy placeholder entry, so we ignore it. */ |
244ffee7 | 654 | |
32090b8e KR |
655 | for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++) |
656 | { | |
2e03ce18 ILT |
657 | if (! bfd_section_from_shdr (abfd, shindex)) |
658 | goto got_no_match; | |
32090b8e | 659 | } |
244ffee7 | 660 | |
5315c428 ILT |
661 | /* Let the backend double check the format and override global |
662 | information. */ | |
663 | if (ebd->elf_backend_object_p) | |
664 | { | |
665 | if ((*ebd->elf_backend_object_p) (abfd) == false) | |
666 | goto got_wrong_format_error; | |
667 | } | |
668 | ||
e549b1d2 ILT |
669 | /* If we have created any reloc sections that are associated with |
670 | debugging sections, mark the reloc sections as debugging as well. */ | |
671 | for (s = abfd->sections; s != NULL; s = s->next) | |
672 | { | |
673 | if ((elf_section_data (s)->this_hdr.sh_type == SHT_REL | |
674 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA) | |
675 | && elf_section_data (s)->this_hdr.sh_info > 0) | |
676 | { | |
677 | unsigned long targ_index; | |
678 | asection *targ_sec; | |
679 | ||
680 | targ_index = elf_section_data (s)->this_hdr.sh_info; | |
681 | targ_sec = bfd_section_from_elf_index (abfd, targ_index); | |
682 | if (targ_sec != NULL | |
683 | && (targ_sec->flags & SEC_DEBUGGING) != 0) | |
684 | s->flags |= SEC_DEBUGGING; | |
685 | } | |
686 | } | |
687 | ||
d24928c0 KR |
688 | return (abfd->xvec); |
689 | ||
1c6042ee | 690 | got_wrong_format_error: |
d1ad85a6 | 691 | bfd_set_error (bfd_error_wrong_format); |
d24928c0 | 692 | goto got_no_match; |
1c6042ee | 693 | got_no_match: |
6ec3bb6a ILT |
694 | if (new_tdata != NULL |
695 | && new_tdata->elf_sect_ptr != NULL) | |
696 | bfd_release (abfd, new_tdata->elf_sect_ptr); | |
697 | if (i_shdrp != NULL) | |
698 | bfd_release (abfd, i_shdrp); | |
699 | if (new_tdata != NULL) | |
700 | bfd_release (abfd, new_tdata); | |
d24928c0 KR |
701 | elf_tdata (abfd) = preserved_tdata; |
702 | return (NULL); | |
32090b8e | 703 | } |
32090b8e KR |
704 | \f |
705 | /* ELF .o/exec file writing */ | |
706 | ||
c9e5279f ILT |
707 | /* Write out the relocs. */ |
708 | ||
0ef449df KR |
709 | static void |
710 | write_relocs (abfd, sec, data) | |
32090b8e KR |
711 | bfd *abfd; |
712 | asection *sec; | |
0ef449df | 713 | PTR data; |
32090b8e | 714 | { |
0ef449df | 715 | boolean *failedp = (boolean *) data; |
32090b8e KR |
716 | Elf_Internal_Shdr *rela_hdr; |
717 | Elf_External_Rela *outbound_relocas; | |
718 | Elf_External_Rel *outbound_relocs; | |
6ab826bd | 719 | unsigned int idx; |
32090b8e | 720 | int use_rela_p = get_elf_backend_data (abfd)->use_rela_p; |
300adb31 | 721 | asymbol *last_sym = 0; |
d1bf45aa | 722 | int last_sym_idx = 0; |
244ffee7 | 723 | |
0ef449df KR |
724 | /* If we have already failed, don't do anything. */ |
725 | if (*failedp) | |
726 | return; | |
727 | ||
32090b8e KR |
728 | if ((sec->flags & SEC_RELOC) == 0) |
729 | return; | |
6ec3bb6a ILT |
730 | |
731 | /* The linker backend writes the relocs out itself, and sets the | |
732 | reloc_count field to zero to inhibit writing them here. Also, | |
733 | sometimes the SEC_RELOC flag gets set even when there aren't any | |
734 | relocs. */ | |
32090b8e KR |
735 | if (sec->reloc_count == 0) |
736 | return; | |
244ffee7 | 737 | |
32090b8e | 738 | rela_hdr = &elf_section_data (sec)->rel_hdr; |
244ffee7 | 739 | |
32090b8e | 740 | rela_hdr->sh_size = rela_hdr->sh_entsize * sec->reloc_count; |
0ef449df KR |
741 | rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); |
742 | if (rela_hdr->contents == NULL) | |
9783e04a | 743 | { |
0ef449df KR |
744 | *failedp = true; |
745 | return; | |
9783e04a | 746 | } |
244ffee7 | 747 | |
32090b8e | 748 | /* orelocation has the data, reloc_count has the count... */ |
300adb31 KR |
749 | if (use_rela_p) |
750 | { | |
751 | outbound_relocas = (Elf_External_Rela *) rela_hdr->contents; | |
752 | ||
753 | for (idx = 0; idx < sec->reloc_count; idx++) | |
32090b8e | 754 | { |
300adb31 KR |
755 | Elf_Internal_Rela dst_rela; |
756 | Elf_External_Rela *src_rela; | |
757 | arelent *ptr; | |
758 | asymbol *sym; | |
759 | int n; | |
760 | ||
761 | ptr = sec->orelocation[idx]; | |
762 | src_rela = outbound_relocas + idx; | |
4c124191 ILT |
763 | |
764 | /* The address of an ELF reloc is section relative for an object | |
765 | file, and absolute for an executable file or shared library. | |
766 | The address of a BFD reloc is always section relative. */ | |
767 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
300adb31 | 768 | dst_rela.r_offset = ptr->address; |
4c124191 ILT |
769 | else |
770 | dst_rela.r_offset = ptr->address + sec->vma; | |
6a3eb9b6 | 771 | |
300adb31 KR |
772 | sym = *ptr->sym_ptr_ptr; |
773 | if (sym == last_sym) | |
774 | n = last_sym_idx; | |
e35765a9 ILT |
775 | else if (bfd_is_abs_section (sym->section) && sym->value == 0) |
776 | n = STN_UNDEF; | |
300adb31 | 777 | else |
32090b8e | 778 | { |
300adb31 | 779 | last_sym = sym; |
d1bf45aa ILT |
780 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); |
781 | if (n < 0) | |
782 | { | |
783 | *failedp = true; | |
784 | return; | |
785 | } | |
786 | last_sym_idx = n; | |
32090b8e | 787 | } |
c9e5279f | 788 | |
e35765a9 ILT |
789 | if ((*ptr->sym_ptr_ptr)->the_bfd != NULL |
790 | && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec | |
791 | && ! _bfd_elf_validate_reloc (abfd, ptr)) | |
c9e5279f ILT |
792 | { |
793 | *failedp = true; | |
794 | return; | |
795 | } | |
796 | ||
300adb31 KR |
797 | dst_rela.r_info = ELF_R_INFO (n, ptr->howto->type); |
798 | ||
799 | dst_rela.r_addend = ptr->addend; | |
800 | elf_swap_reloca_out (abfd, &dst_rela, src_rela); | |
244ffee7 | 801 | } |
300adb31 KR |
802 | } |
803 | else | |
804 | /* REL relocations */ | |
805 | { | |
806 | outbound_relocs = (Elf_External_Rel *) rela_hdr->contents; | |
807 | ||
808 | for (idx = 0; idx < sec->reloc_count; idx++) | |
32090b8e | 809 | { |
300adb31 KR |
810 | Elf_Internal_Rel dst_rel; |
811 | Elf_External_Rel *src_rel; | |
812 | arelent *ptr; | |
813 | int n; | |
814 | asymbol *sym; | |
815 | ||
816 | ptr = sec->orelocation[idx]; | |
817 | sym = *ptr->sym_ptr_ptr; | |
818 | src_rel = outbound_relocs + idx; | |
4c124191 ILT |
819 | |
820 | /* The address of an ELF reloc is section relative for an object | |
821 | file, and absolute for an executable file or shared library. | |
822 | The address of a BFD reloc is always section relative. */ | |
823 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
300adb31 | 824 | dst_rel.r_offset = ptr->address; |
4c124191 ILT |
825 | else |
826 | dst_rel.r_offset = ptr->address + sec->vma; | |
244ffee7 | 827 | |
300adb31 KR |
828 | if (sym == last_sym) |
829 | n = last_sym_idx; | |
830 | else | |
32090b8e | 831 | { |
300adb31 | 832 | last_sym = sym; |
d1bf45aa ILT |
833 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); |
834 | if (n < 0) | |
835 | { | |
836 | *failedp = true; | |
837 | return; | |
838 | } | |
839 | last_sym_idx = n; | |
32090b8e | 840 | } |
c9e5279f | 841 | |
d1bf45aa | 842 | if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec |
e35765a9 | 843 | && ! _bfd_elf_validate_reloc (abfd, ptr)) |
c9e5279f ILT |
844 | { |
845 | *failedp = true; | |
846 | return; | |
847 | } | |
848 | ||
300adb31 KR |
849 | dst_rel.r_info = ELF_R_INFO (n, ptr->howto->type); |
850 | ||
851 | elf_swap_reloc_out (abfd, &dst_rel, src_rel); | |
32090b8e | 852 | } |
300adb31 | 853 | } |
32090b8e | 854 | } |
244ffee7 | 855 | |
d1bf45aa ILT |
856 | /* Write out the program headers. */ |
857 | ||
858 | int | |
859 | elf_write_out_phdrs (abfd, phdr, count) | |
ede4eed4 | 860 | bfd *abfd; |
d1bf45aa | 861 | const Elf_Internal_Phdr *phdr; |
ede4eed4 KR |
862 | int count; |
863 | { | |
864 | while (count--) | |
fa15568a | 865 | { |
ede4eed4 KR |
866 | Elf_External_Phdr extphdr; |
867 | elf_swap_phdr_out (abfd, phdr, &extphdr); | |
868 | if (bfd_write (&extphdr, sizeof (Elf_External_Phdr), 1, abfd) | |
869 | != sizeof (Elf_External_Phdr)) | |
870 | return -1; | |
871 | phdr++; | |
fa15568a | 872 | } |
ede4eed4 | 873 | return 0; |
fa15568a | 874 | } |
244ffee7 | 875 | |
d1bf45aa ILT |
876 | /* Write out the section headers and the ELF file header. */ |
877 | ||
878 | boolean | |
879 | elf_write_shdrs_and_ehdr (abfd) | |
fa15568a ILT |
880 | bfd *abfd; |
881 | { | |
ede4eed4 KR |
882 | Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ |
883 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
884 | Elf_External_Shdr *x_shdrp; /* Section header table, external form */ | |
885 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
886 | unsigned int count; | |
7c726b66 | 887 | |
ede4eed4 KR |
888 | i_ehdrp = elf_elfheader (abfd); |
889 | i_shdrp = elf_elfsections (abfd); | |
7c726b66 | 890 | |
ede4eed4 | 891 | /* swap the header before spitting it out... */ |
fa15568a | 892 | |
ede4eed4 KR |
893 | #if DEBUG & 1 |
894 | elf_debug_file (i_ehdrp); | |
895 | #endif | |
896 | elf_swap_ehdr_out (abfd, i_ehdrp, &x_ehdr); | |
897 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 | |
898 | || (bfd_write ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) | |
899 | != sizeof (x_ehdr))) | |
900 | return false; | |
fa15568a | 901 | |
ede4eed4 KR |
902 | /* at this point we've concocted all the ELF sections... */ |
903 | x_shdrp = (Elf_External_Shdr *) | |
904 | bfd_alloc (abfd, sizeof (*x_shdrp) * (i_ehdrp->e_shnum)); | |
905 | if (!x_shdrp) | |
a9713b91 | 906 | return false; |
fa15568a | 907 | |
ede4eed4 | 908 | for (count = 0; count < i_ehdrp->e_shnum; count++) |
fa15568a | 909 | { |
ede4eed4 KR |
910 | #if DEBUG & 2 |
911 | elf_debug_section (count, i_shdrp[count]); | |
912 | #endif | |
913 | elf_swap_shdr_out (abfd, i_shdrp[count], x_shdrp + count); | |
fa15568a | 914 | } |
ede4eed4 KR |
915 | if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_shoff, SEEK_SET) != 0 |
916 | || (bfd_write ((PTR) x_shdrp, sizeof (*x_shdrp), i_ehdrp->e_shnum, abfd) | |
917 | != sizeof (*x_shdrp) * i_ehdrp->e_shnum)) | |
918 | return false; | |
fa15568a | 919 | |
ede4eed4 | 920 | /* need to dump the string table too... */ |
fa15568a ILT |
921 | |
922 | return true; | |
244ffee7 JK |
923 | } |
924 | ||
d1bf45aa | 925 | long |
ede4eed4 | 926 | elf_slurp_symbol_table (abfd, symptrs, dynamic) |
062189c6 | 927 | bfd *abfd; |
ede4eed4 KR |
928 | asymbol **symptrs; /* Buffer for generated bfd symbols */ |
929 | boolean dynamic; | |
32090b8e | 930 | { |
ede4eed4 | 931 | Elf_Internal_Shdr *hdr; |
e549b1d2 | 932 | Elf_Internal_Shdr *verhdr; |
53d3ce37 | 933 | unsigned long symcount; /* Number of external ELF symbols */ |
ede4eed4 KR |
934 | elf_symbol_type *sym; /* Pointer to current bfd symbol */ |
935 | elf_symbol_type *symbase; /* Buffer for generated bfd symbols */ | |
936 | Elf_Internal_Sym i_sym; | |
937 | Elf_External_Sym *x_symp = NULL; | |
e549b1d2 | 938 | Elf_External_Versym *x_versymp = NULL; |
244ffee7 | 939 | |
ede4eed4 KR |
940 | /* Read each raw ELF symbol, converting from external ELF form to |
941 | internal ELF form, and then using the information to create a | |
942 | canonical bfd symbol table entry. | |
6a3eb9b6 | 943 | |
ede4eed4 KR |
944 | Note that we allocate the initial bfd canonical symbol buffer |
945 | based on a one-to-one mapping of the ELF symbols to canonical | |
946 | symbols. We actually use all the ELF symbols, so there will be no | |
947 | space left over at the end. When we have all the symbols, we | |
948 | build the caller's pointer vector. */ | |
244ffee7 | 949 | |
e549b1d2 ILT |
950 | if (! dynamic) |
951 | { | |
952 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
953 | verhdr = NULL; | |
954 | } | |
ede4eed4 | 955 | else |
e549b1d2 ILT |
956 | { |
957 | hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
f56d634e ILT |
958 | if (elf_dynversym (abfd) == 0) |
959 | verhdr = NULL; | |
960 | else | |
961 | verhdr = &elf_tdata (abfd)->dynversym_hdr; | |
e549b1d2 ILT |
962 | if ((elf_tdata (abfd)->dynverdef_section != 0 |
963 | && elf_tdata (abfd)->verdef == NULL) | |
964 | || (elf_tdata (abfd)->dynverref_section != 0 | |
965 | && elf_tdata (abfd)->verref == NULL)) | |
966 | { | |
967 | if (! _bfd_elf_slurp_version_tables (abfd)) | |
968 | return -1; | |
969 | } | |
970 | } | |
971 | ||
ede4eed4 KR |
972 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1) |
973 | return -1; | |
244ffee7 | 974 | |
ede4eed4 | 975 | symcount = hdr->sh_size / sizeof (Elf_External_Sym); |
d24928c0 | 976 | |
ede4eed4 KR |
977 | if (symcount == 0) |
978 | sym = symbase = NULL; | |
979 | else | |
e621c5cc | 980 | { |
53d3ce37 | 981 | unsigned long i; |
24f13b03 | 982 | |
ede4eed4 KR |
983 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1) |
984 | return -1; | |
6ec3bb6a | 985 | |
ede4eed4 KR |
986 | symbase = ((elf_symbol_type *) |
987 | bfd_zalloc (abfd, symcount * sizeof (elf_symbol_type))); | |
988 | if (symbase == (elf_symbol_type *) NULL) | |
a9713b91 | 989 | return -1; |
ede4eed4 | 990 | sym = symbase; |
6ec3bb6a | 991 | |
ede4eed4 KR |
992 | /* Temporarily allocate room for the raw ELF symbols. */ |
993 | x_symp = ((Elf_External_Sym *) | |
58142f10 | 994 | bfd_malloc (symcount * sizeof (Elf_External_Sym))); |
ede4eed4 | 995 | if (x_symp == NULL && symcount != 0) |
58142f10 | 996 | goto error_return; |
1c640609 | 997 | |
ede4eed4 KR |
998 | if (bfd_read ((PTR) x_symp, sizeof (Elf_External_Sym), symcount, abfd) |
999 | != symcount * sizeof (Elf_External_Sym)) | |
1000 | goto error_return; | |
e549b1d2 ILT |
1001 | |
1002 | /* Read the raw ELF version symbol information. */ | |
1003 | ||
f56d634e | 1004 | if (verhdr != NULL |
e549b1d2 ILT |
1005 | && verhdr->sh_size / sizeof (Elf_External_Versym) != symcount) |
1006 | { | |
1007 | (*_bfd_error_handler) | |
53d3ce37 | 1008 | (_("%s: version count (%ld) does not match symbol count (%ld)"), |
e549b1d2 ILT |
1009 | abfd->filename, |
1010 | (long) (verhdr->sh_size / sizeof (Elf_External_Versym)), | |
1011 | symcount); | |
1012 | ||
1013 | /* Slurp in the symbols without the version information, | |
1014 | since that is more helpful than just quitting. */ | |
1015 | verhdr = NULL; | |
1016 | } | |
1017 | ||
1018 | if (verhdr != NULL) | |
1019 | { | |
1020 | if (bfd_seek (abfd, verhdr->sh_offset, SEEK_SET) != 0) | |
1021 | goto error_return; | |
1022 | ||
1023 | x_versymp = (Elf_External_Versym *) bfd_malloc (verhdr->sh_size); | |
f56d634e | 1024 | if (x_versymp == NULL && verhdr->sh_size != 0) |
e549b1d2 ILT |
1025 | goto error_return; |
1026 | ||
1027 | if (bfd_read ((PTR) x_versymp, 1, verhdr->sh_size, abfd) | |
1028 | != verhdr->sh_size) | |
1029 | goto error_return; | |
1030 | } | |
1031 | ||
ede4eed4 KR |
1032 | /* Skip first symbol, which is a null dummy. */ |
1033 | for (i = 1; i < symcount; i++) | |
6ec3bb6a | 1034 | { |
ede4eed4 KR |
1035 | elf_swap_symbol_in (abfd, x_symp + i, &i_sym); |
1036 | memcpy (&sym->internal_elf_sym, &i_sym, sizeof (Elf_Internal_Sym)); | |
1037 | #ifdef ELF_KEEP_EXTSYM | |
1038 | memcpy (&sym->native_elf_sym, x_symp + i, sizeof (Elf_External_Sym)); | |
6ec3bb6a | 1039 | #endif |
ede4eed4 | 1040 | sym->symbol.the_bfd = abfd; |
6ec3bb6a | 1041 | |
ede4eed4 KR |
1042 | sym->symbol.name = bfd_elf_string_from_elf_section (abfd, |
1043 | hdr->sh_link, | |
1044 | i_sym.st_name); | |
6ec3bb6a | 1045 | |
ede4eed4 | 1046 | sym->symbol.value = i_sym.st_value; |
6ec3bb6a | 1047 | |
ede4eed4 | 1048 | if (i_sym.st_shndx > 0 && i_sym.st_shndx < SHN_LORESERVE) |
6ec3bb6a | 1049 | { |
ede4eed4 KR |
1050 | sym->symbol.section = section_from_elf_index (abfd, |
1051 | i_sym.st_shndx); | |
1052 | if (sym->symbol.section == NULL) | |
6ec3bb6a | 1053 | { |
ede4eed4 KR |
1054 | /* This symbol is in a section for which we did not |
1055 | create a BFD section. Just use bfd_abs_section, | |
1056 | although it is wrong. FIXME. */ | |
1057 | sym->symbol.section = bfd_abs_section_ptr; | |
6ec3bb6a ILT |
1058 | } |
1059 | } | |
ede4eed4 | 1060 | else if (i_sym.st_shndx == SHN_ABS) |
6ec3bb6a | 1061 | { |
ede4eed4 | 1062 | sym->symbol.section = bfd_abs_section_ptr; |
6ec3bb6a | 1063 | } |
ede4eed4 | 1064 | else if (i_sym.st_shndx == SHN_COMMON) |
6ec3bb6a | 1065 | { |
ede4eed4 KR |
1066 | sym->symbol.section = bfd_com_section_ptr; |
1067 | /* Elf puts the alignment into the `value' field, and | |
1068 | the size into the `size' field. BFD wants to see the | |
1069 | size in the value field, and doesn't care (at the | |
1070 | moment) about the alignment. */ | |
1071 | sym->symbol.value = i_sym.st_size; | |
6ec3bb6a | 1072 | } |
ede4eed4 | 1073 | else if (i_sym.st_shndx == SHN_UNDEF) |
6ec3bb6a | 1074 | { |
ede4eed4 | 1075 | sym->symbol.section = bfd_und_section_ptr; |
6ec3bb6a ILT |
1076 | } |
1077 | else | |
ede4eed4 | 1078 | sym->symbol.section = bfd_abs_section_ptr; |
013dec1a | 1079 | |
53d3ce37 TT |
1080 | /* If this is a relocateable file, then the symbol value is |
1081 | already section relative. */ | |
1082 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
1083 | sym->symbol.value -= sym->symbol.section->vma; | |
013dec1a | 1084 | |
ede4eed4 | 1085 | switch (ELF_ST_BIND (i_sym.st_info)) |
013dec1a | 1086 | { |
ede4eed4 KR |
1087 | case STB_LOCAL: |
1088 | sym->symbol.flags |= BSF_LOCAL; | |
197e30e5 | 1089 | break; |
ede4eed4 KR |
1090 | case STB_GLOBAL: |
1091 | if (i_sym.st_shndx != SHN_UNDEF | |
1092 | && i_sym.st_shndx != SHN_COMMON) | |
1093 | sym->symbol.flags |= BSF_GLOBAL; | |
013dec1a | 1094 | break; |
ede4eed4 KR |
1095 | case STB_WEAK: |
1096 | sym->symbol.flags |= BSF_WEAK; | |
013dec1a ILT |
1097 | break; |
1098 | } | |
013dec1a | 1099 | |
ede4eed4 | 1100 | switch (ELF_ST_TYPE (i_sym.st_info)) |
eb4267a3 | 1101 | { |
ede4eed4 KR |
1102 | case STT_SECTION: |
1103 | sym->symbol.flags |= BSF_SECTION_SYM | BSF_DEBUGGING; | |
1104 | break; | |
1105 | case STT_FILE: | |
1106 | sym->symbol.flags |= BSF_FILE | BSF_DEBUGGING; | |
1107 | break; | |
1108 | case STT_FUNC: | |
1109 | sym->symbol.flags |= BSF_FUNCTION; | |
1110 | break; | |
c9e5279f ILT |
1111 | case STT_OBJECT: |
1112 | sym->symbol.flags |= BSF_OBJECT; | |
1113 | break; | |
eb4267a3 | 1114 | } |
6ec3bb6a | 1115 | |
ede4eed4 KR |
1116 | if (dynamic) |
1117 | sym->symbol.flags |= BSF_DYNAMIC; | |
3c9832f8 | 1118 | |
e549b1d2 ILT |
1119 | if (x_versymp != NULL) |
1120 | { | |
1121 | Elf_Internal_Versym iversym; | |
1122 | ||
1123 | _bfd_elf_swap_versym_in (abfd, x_versymp + i, &iversym); | |
1124 | sym->version = iversym.vs_vers; | |
1125 | } | |
1126 | ||
ede4eed4 KR |
1127 | /* Do some backend-specific processing on this symbol. */ |
1128 | { | |
1129 | struct elf_backend_data *ebd = get_elf_backend_data (abfd); | |
1130 | if (ebd->elf_backend_symbol_processing) | |
1131 | (*ebd->elf_backend_symbol_processing) (abfd, &sym->symbol); | |
1132 | } | |
6ec3bb6a | 1133 | |
ede4eed4 KR |
1134 | sym++; |
1135 | } | |
6ec3bb6a ILT |
1136 | } |
1137 | ||
ede4eed4 KR |
1138 | /* Do some backend-specific processing on this symbol table. */ |
1139 | { | |
1140 | struct elf_backend_data *ebd = get_elf_backend_data (abfd); | |
1141 | if (ebd->elf_backend_symbol_table_processing) | |
1142 | (*ebd->elf_backend_symbol_table_processing) (abfd, symbase, symcount); | |
1143 | } | |
6ec3bb6a | 1144 | |
ede4eed4 | 1145 | /* We rely on the zalloc to clear out the final symbol entry. */ |
6ec3bb6a | 1146 | |
ede4eed4 | 1147 | symcount = sym - symbase; |
71edd06d | 1148 | |
ede4eed4 KR |
1149 | /* Fill in the user's symbol pointer vector if needed. */ |
1150 | if (symptrs) | |
6ec3bb6a | 1151 | { |
ede4eed4 | 1152 | long l = symcount; |
6ec3bb6a | 1153 | |
ede4eed4 KR |
1154 | sym = symbase; |
1155 | while (l-- > 0) | |
1156 | { | |
1157 | *symptrs++ = &sym->symbol; | |
1158 | sym++; | |
1159 | } | |
1160 | *symptrs = 0; /* Final null pointer */ | |
6ec3bb6a ILT |
1161 | } |
1162 | ||
e549b1d2 ILT |
1163 | if (x_versymp != NULL) |
1164 | free (x_versymp); | |
ede4eed4 KR |
1165 | if (x_symp != NULL) |
1166 | free (x_symp); | |
1167 | return symcount; | |
1168 | error_return: | |
e549b1d2 ILT |
1169 | if (x_versymp != NULL) |
1170 | free (x_versymp); | |
ede4eed4 KR |
1171 | if (x_symp != NULL) |
1172 | free (x_symp); | |
1173 | return -1; | |
6ec3bb6a ILT |
1174 | } |
1175 | ||
ede4eed4 | 1176 | /* Read in and swap the external relocs. */ |
6ec3bb6a ILT |
1177 | |
1178 | static boolean | |
e35765a9 | 1179 | elf_slurp_reloc_table (abfd, asect, symbols, dynamic) |
ede4eed4 KR |
1180 | bfd *abfd; |
1181 | asection *asect; | |
1182 | asymbol **symbols; | |
e35765a9 | 1183 | boolean dynamic; |
6ec3bb6a | 1184 | { |
ede4eed4 KR |
1185 | struct elf_backend_data * const ebd = get_elf_backend_data (abfd); |
1186 | struct bfd_elf_section_data * const d = elf_section_data (asect); | |
e35765a9 ILT |
1187 | Elf_Internal_Shdr *rel_hdr; |
1188 | bfd_size_type reloc_count; | |
ede4eed4 KR |
1189 | PTR allocated = NULL; |
1190 | bfd_byte *native_relocs; | |
1191 | arelent *relents; | |
1192 | arelent *relent; | |
1193 | unsigned int i; | |
1194 | int entsize; | |
013dec1a | 1195 | |
e35765a9 | 1196 | if (asect->relocation != NULL) |
6ec3bb6a ILT |
1197 | return true; |
1198 | ||
e35765a9 ILT |
1199 | if (! dynamic) |
1200 | { | |
1201 | if ((asect->flags & SEC_RELOC) == 0 | |
1202 | || asect->reloc_count == 0) | |
1203 | return true; | |
1204 | ||
1205 | rel_hdr = &d->rel_hdr; | |
1206 | reloc_count = asect->reloc_count; | |
1207 | ||
1208 | BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset | |
1209 | && reloc_count == rel_hdr->sh_size / rel_hdr->sh_entsize); | |
1210 | } | |
1211 | else | |
1212 | { | |
1213 | if (asect->_raw_size == 0) | |
1214 | return true; | |
1215 | ||
1216 | rel_hdr = &d->this_hdr; | |
1217 | reloc_count = rel_hdr->sh_size / rel_hdr->sh_entsize; | |
1218 | } | |
6ec3bb6a | 1219 | |
e35765a9 | 1220 | allocated = (PTR) bfd_malloc ((size_t) rel_hdr->sh_size); |
ede4eed4 | 1221 | if (allocated == NULL) |
58142f10 | 1222 | goto error_return; |
6ec3bb6a | 1223 | |
e35765a9 ILT |
1224 | if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 |
1225 | || (bfd_read (allocated, 1, rel_hdr->sh_size, abfd) | |
1226 | != rel_hdr->sh_size)) | |
ede4eed4 | 1227 | goto error_return; |
6ec3bb6a | 1228 | |
ede4eed4 | 1229 | native_relocs = (bfd_byte *) allocated; |
6ec3bb6a | 1230 | |
e35765a9 | 1231 | relents = (arelent *) bfd_alloc (abfd, reloc_count * sizeof (arelent)); |
ede4eed4 | 1232 | if (relents == NULL) |
a9713b91 | 1233 | goto error_return; |
6ec3bb6a | 1234 | |
e35765a9 | 1235 | entsize = rel_hdr->sh_entsize; |
ede4eed4 KR |
1236 | BFD_ASSERT (entsize == sizeof (Elf_External_Rel) |
1237 | || entsize == sizeof (Elf_External_Rela)); | |
1238 | ||
1239 | for (i = 0, relent = relents; | |
e35765a9 | 1240 | i < reloc_count; |
ede4eed4 | 1241 | i++, relent++, native_relocs += entsize) |
013dec1a | 1242 | { |
ede4eed4 KR |
1243 | Elf_Internal_Rela rela; |
1244 | Elf_Internal_Rel rel; | |
1245 | ||
1246 | if (entsize == sizeof (Elf_External_Rela)) | |
1247 | elf_swap_reloca_in (abfd, (Elf_External_Rela *) native_relocs, &rela); | |
1248 | else | |
013dec1a | 1249 | { |
ede4eed4 KR |
1250 | elf_swap_reloc_in (abfd, (Elf_External_Rel *) native_relocs, &rel); |
1251 | rela.r_offset = rel.r_offset; | |
1252 | rela.r_info = rel.r_info; | |
1253 | rela.r_addend = 0; | |
013dec1a ILT |
1254 | } |
1255 | ||
ede4eed4 KR |
1256 | /* The address of an ELF reloc is section relative for an object |
1257 | file, and absolute for an executable file or shared library. | |
e35765a9 ILT |
1258 | The address of a normal BFD reloc is always section relative, |
1259 | and the address of a dynamic reloc is absolute.. */ | |
1260 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) | |
ede4eed4 KR |
1261 | relent->address = rela.r_offset; |
1262 | else | |
1263 | relent->address = rela.r_offset - asect->vma; | |
6ec3bb6a | 1264 | |
ede4eed4 KR |
1265 | if (ELF_R_SYM (rela.r_info) == 0) |
1266 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
1267 | else | |
1268 | { | |
1269 | asymbol **ps, *s; | |
6ec3bb6a | 1270 | |
ede4eed4 KR |
1271 | ps = symbols + ELF_R_SYM (rela.r_info) - 1; |
1272 | s = *ps; | |
6ec3bb6a | 1273 | |
ede4eed4 KR |
1274 | /* Canonicalize ELF section symbols. FIXME: Why? */ |
1275 | if ((s->flags & BSF_SECTION_SYM) == 0) | |
1276 | relent->sym_ptr_ptr = ps; | |
1277 | else | |
1278 | relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; | |
1279 | } | |
6ec3bb6a | 1280 | |
ede4eed4 | 1281 | relent->addend = rela.r_addend; |
013dec1a | 1282 | |
ede4eed4 KR |
1283 | if (entsize == sizeof (Elf_External_Rela)) |
1284 | (*ebd->elf_info_to_howto) (abfd, relent, &rela); | |
1285 | else | |
1286 | (*ebd->elf_info_to_howto_rel) (abfd, relent, &rel); | |
5315c428 ILT |
1287 | } |
1288 | ||
ede4eed4 | 1289 | asect->relocation = relents; |
6ec3bb6a | 1290 | |
ede4eed4 KR |
1291 | if (allocated != NULL) |
1292 | free (allocated); | |
6ec3bb6a | 1293 | |
ede4eed4 | 1294 | return true; |
6ec3bb6a | 1295 | |
ede4eed4 KR |
1296 | error_return: |
1297 | if (allocated != NULL) | |
1298 | free (allocated); | |
1299 | return false; | |
1300 | } | |
5315c428 | 1301 | |
ede4eed4 KR |
1302 | #ifdef DEBUG |
1303 | static void | |
1304 | elf_debug_section (num, hdr) | |
1305 | int num; | |
1306 | Elf_Internal_Shdr *hdr; | |
1307 | { | |
1308 | fprintf (stderr, "\nSection#%d '%s' 0x%.8lx\n", num, | |
1309 | hdr->bfd_section != NULL ? hdr->bfd_section->name : "", | |
1310 | (long) hdr); | |
1311 | fprintf (stderr, | |
1312 | "sh_name = %ld\tsh_type = %ld\tsh_flags = %ld\n", | |
1313 | (long) hdr->sh_name, | |
1314 | (long) hdr->sh_type, | |
1315 | (long) hdr->sh_flags); | |
1316 | fprintf (stderr, | |
1317 | "sh_addr = %ld\tsh_offset = %ld\tsh_size = %ld\n", | |
1318 | (long) hdr->sh_addr, | |
1319 | (long) hdr->sh_offset, | |
1320 | (long) hdr->sh_size); | |
1321 | fprintf (stderr, | |
1322 | "sh_link = %ld\tsh_info = %ld\tsh_addralign = %ld\n", | |
1323 | (long) hdr->sh_link, | |
1324 | (long) hdr->sh_info, | |
1325 | (long) hdr->sh_addralign); | |
1326 | fprintf (stderr, "sh_entsize = %ld\n", | |
1327 | (long) hdr->sh_entsize); | |
1328 | fflush (stderr); | |
1329 | } | |
6ec3bb6a | 1330 | |
ede4eed4 KR |
1331 | static void |
1332 | elf_debug_file (ehdrp) | |
1333 | Elf_Internal_Ehdr *ehdrp; | |
1334 | { | |
1335 | fprintf (stderr, "e_entry = 0x%.8lx\n", (long) ehdrp->e_entry); | |
1336 | fprintf (stderr, "e_phoff = %ld\n", (long) ehdrp->e_phoff); | |
1337 | fprintf (stderr, "e_phnum = %ld\n", (long) ehdrp->e_phnum); | |
1338 | fprintf (stderr, "e_phentsize = %ld\n", (long) ehdrp->e_phentsize); | |
1339 | fprintf (stderr, "e_shoff = %ld\n", (long) ehdrp->e_shoff); | |
1340 | fprintf (stderr, "e_shnum = %ld\n", (long) ehdrp->e_shnum); | |
1341 | fprintf (stderr, "e_shentsize = %ld\n", (long) ehdrp->e_shentsize); | |
1342 | } | |
6ec3bb6a | 1343 | |
ede4eed4 KR |
1344 | static char * |
1345 | elf_symbol_flags (flags) | |
1346 | flagword flags; | |
1347 | { | |
1348 | static char buffer[1024]; | |
6ec3bb6a | 1349 | |
ede4eed4 KR |
1350 | buffer[0] = '\0'; |
1351 | if (flags & BSF_LOCAL) | |
1352 | strcat (buffer, " local"); | |
8af74670 | 1353 | |
ede4eed4 KR |
1354 | if (flags & BSF_GLOBAL) |
1355 | strcat (buffer, " global"); | |
6ec3bb6a | 1356 | |
ede4eed4 KR |
1357 | if (flags & BSF_DEBUGGING) |
1358 | strcat (buffer, " debug"); | |
6ec3bb6a | 1359 | |
ede4eed4 KR |
1360 | if (flags & BSF_FUNCTION) |
1361 | strcat (buffer, " function"); | |
6ec3bb6a | 1362 | |
ede4eed4 KR |
1363 | if (flags & BSF_KEEP) |
1364 | strcat (buffer, " keep"); | |
6ec3bb6a | 1365 | |
ede4eed4 KR |
1366 | if (flags & BSF_KEEP_G) |
1367 | strcat (buffer, " keep_g"); | |
6ec3bb6a | 1368 | |
ede4eed4 KR |
1369 | if (flags & BSF_WEAK) |
1370 | strcat (buffer, " weak"); | |
6ec3bb6a | 1371 | |
ede4eed4 KR |
1372 | if (flags & BSF_SECTION_SYM) |
1373 | strcat (buffer, " section-sym"); | |
6ec3bb6a | 1374 | |
ede4eed4 KR |
1375 | if (flags & BSF_OLD_COMMON) |
1376 | strcat (buffer, " old-common"); | |
6ec3bb6a | 1377 | |
ede4eed4 KR |
1378 | if (flags & BSF_NOT_AT_END) |
1379 | strcat (buffer, " not-at-end"); | |
6ec3bb6a | 1380 | |
ede4eed4 KR |
1381 | if (flags & BSF_CONSTRUCTOR) |
1382 | strcat (buffer, " constructor"); | |
6ec3bb6a | 1383 | |
ede4eed4 KR |
1384 | if (flags & BSF_WARNING) |
1385 | strcat (buffer, " warning"); | |
6ec3bb6a | 1386 | |
ede4eed4 KR |
1387 | if (flags & BSF_INDIRECT) |
1388 | strcat (buffer, " indirect"); | |
6ec3bb6a | 1389 | |
ede4eed4 KR |
1390 | if (flags & BSF_FILE) |
1391 | strcat (buffer, " file"); | |
6ec3bb6a | 1392 | |
ede4eed4 KR |
1393 | if (flags & DYNAMIC) |
1394 | strcat (buffer, " dynamic"); | |
6ec3bb6a | 1395 | |
ede4eed4 KR |
1396 | if (flags & ~(BSF_LOCAL |
1397 | | BSF_GLOBAL | |
1398 | | BSF_DEBUGGING | |
1399 | | BSF_FUNCTION | |
1400 | | BSF_KEEP | |
1401 | | BSF_KEEP_G | |
1402 | | BSF_WEAK | |
1403 | | BSF_SECTION_SYM | |
1404 | | BSF_OLD_COMMON | |
1405 | | BSF_NOT_AT_END | |
1406 | | BSF_CONSTRUCTOR | |
1407 | | BSF_WARNING | |
1408 | | BSF_INDIRECT | |
1409 | | BSF_FILE | |
1410 | | BSF_DYNAMIC)) | |
1411 | strcat (buffer, " unknown-bits"); | |
6ec3bb6a | 1412 | |
ede4eed4 | 1413 | return buffer; |
6ec3bb6a | 1414 | } |
ede4eed4 KR |
1415 | #endif |
1416 | \f | |
1417 | #include "elfcore.h" | |
1418 | #include "elflink.h" | |
1419 | \f | |
1420 | /* Size-dependent data and functions. */ | |
1421 | const struct elf_size_info NAME(_bfd_elf,size_info) = { | |
1422 | sizeof (Elf_External_Ehdr), | |
1423 | sizeof (Elf_External_Phdr), | |
1424 | sizeof (Elf_External_Shdr), | |
1425 | sizeof (Elf_External_Rel), | |
1426 | sizeof (Elf_External_Rela), | |
1427 | sizeof (Elf_External_Sym), | |
1428 | sizeof (Elf_External_Dyn), | |
1429 | sizeof (Elf_External_Note), | |
1430 | ||
1431 | ARCH_SIZE, FILE_ALIGN, | |
1432 | ELFCLASS, EV_CURRENT, | |
d1bf45aa ILT |
1433 | elf_write_out_phdrs, |
1434 | elf_write_shdrs_and_ehdr, | |
b818a325 KR |
1435 | write_relocs, |
1436 | elf_swap_symbol_out, | |
1437 | elf_slurp_reloc_table, | |
1438 | elf_slurp_symbol_table, | |
02fcd126 | 1439 | elf_swap_dyn_in |
ede4eed4 | 1440 | }; |