Commit | Line | Data |
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252b5132 | 1 | /* BFD back-end data structures for a.out (and similar) files. |
7898deda | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
aca305d9 | 3 | 2000, 2001, 2002, 2003, 2004 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Cygnus Support. | |
6 | ||
e6af3a53 | 7 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 8 | |
e6af3a53 NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
252b5132 | 13 | |
e6af3a53 NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
252b5132 | 18 | |
e6af3a53 NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
252b5132 RH |
22 | |
23 | #ifndef LIBAOUT_H | |
24 | #define LIBAOUT_H | |
25 | ||
26 | /* We try to encapsulate the differences in the various a.out file | |
27 | variants in a few routines, and otherwise share large masses of code. | |
28 | This means we only have to fix bugs in one place, most of the time. */ | |
29 | ||
30 | #include "bfdlink.h" | |
31 | ||
dc810e39 AM |
32 | /* Macros for accessing components in an aout header. Saves cluttering |
33 | the source with (bfd_vma) and (bfd_byte *) casts. */ | |
34 | ||
35 | #define H_PUT_64(abfd, val, where) \ | |
36 | bfd_h_put_64 ((abfd), (bfd_vma) (val), (bfd_byte *) (where)) | |
37 | ||
38 | #define H_PUT_32(abfd, val, where) \ | |
39 | bfd_h_put_32 ((abfd), (bfd_vma) (val), (bfd_byte *) (where)) | |
40 | ||
41 | #define H_PUT_16(abfd, val, where) \ | |
42 | bfd_h_put_16 ((abfd), (bfd_vma) (val), (bfd_byte *) (where)) | |
43 | ||
44 | #define H_PUT_8 bfd_h_put_8 | |
45 | ||
46 | #define H_PUT_S64(abfd, val, where) \ | |
47 | bfd_h_put_signed_64 ((abfd), (bfd_vma) (val), (bfd_byte *) (where)) | |
48 | ||
49 | #define H_PUT_S32(abfd, val, where) \ | |
50 | bfd_h_put_signed_32 ((abfd), (bfd_vma) (val), (bfd_byte *) (where)) | |
51 | ||
52 | #define H_PUT_S16(abfd, val, where) \ | |
53 | bfd_h_put_signed_16 ((abfd), (bfd_vma) (val), (bfd_byte *) (where)) | |
54 | ||
55 | #define H_PUT_S8 bfd_h_put_signed_8 | |
56 | ||
57 | #define H_GET_64(abfd, where) \ | |
58 | bfd_h_get_64 ((abfd), (bfd_byte *) (where)) | |
59 | ||
60 | #define H_GET_32(abfd, where) \ | |
61 | bfd_h_get_32 ((abfd), (bfd_byte *) (where)) | |
62 | ||
63 | #define H_GET_16(abfd, where) \ | |
64 | bfd_h_get_16 ((abfd), (bfd_byte *) (where)) | |
65 | ||
66 | #define H_GET_8 bfd_h_get_8 | |
67 | ||
68 | #define H_GET_S64(abfd, where) \ | |
69 | bfd_h_get_signed_64 ((abfd), (bfd_byte *) (where)) | |
70 | ||
71 | #define H_GET_S32(abfd, where) \ | |
72 | bfd_h_get_signed_32 ((abfd), (bfd_byte *) (where)) | |
73 | ||
74 | #define H_GET_S16(abfd, where) \ | |
75 | bfd_h_get_signed_16 ((abfd), (bfd_byte *) (where)) | |
76 | ||
77 | #define H_GET_S8 bfd_h_get_signed_8 | |
78 | ||
252b5132 RH |
79 | /* Parameterize the a.out code based on whether it is being built |
80 | for a 32-bit architecture or a 64-bit architecture. */ | |
e43d48cc AM |
81 | /* Do not "beautify" the CONCAT* macro args. Traditional C will not |
82 | remove whitespace added here, and thus will fail to concatenate | |
83 | the tokens. */ | |
252b5132 | 84 | #if ARCH_SIZE==64 |
dc810e39 AM |
85 | #define GET_WORD H_GET_64 |
86 | #define GET_SWORD H_GET_S64 | |
87 | #define GET_MAGIC H_GET_32 | |
88 | #define PUT_WORD H_PUT_64 | |
89 | #define PUT_MAGIC H_PUT_32 | |
252b5132 | 90 | #ifndef NAME |
e43d48cc | 91 | #define NAME(x,y) CONCAT3 (x,_64_,y) |
252b5132 | 92 | #endif |
e43d48cc | 93 | #define JNAME(x) CONCAT2 (x,_64) |
252b5132 | 94 | #define BYTES_IN_WORD 8 |
e135f41b NC |
95 | #else |
96 | #if ARCH_SIZE==16 | |
dc810e39 AM |
97 | #define GET_WORD H_GET_16 |
98 | #define GET_SWORD H_GET_S16 | |
99 | #define GET_MAGIC H_GET_16 | |
100 | #define PUT_WORD H_PUT_16 | |
101 | #define PUT_MAGIC H_PUT_16 | |
e135f41b | 102 | #ifndef NAME |
e43d48cc | 103 | #define NAME(x,y) CONCAT3 (x,_16_,y) |
e135f41b | 104 | #endif |
e43d48cc | 105 | #define JNAME(x) CONCAT2 (x,_16) |
e135f41b | 106 | #define BYTES_IN_WORD 2 |
252b5132 | 107 | #else /* ARCH_SIZE == 32 */ |
dc810e39 AM |
108 | #define GET_WORD H_GET_32 |
109 | #define GET_SWORD H_GET_S32 | |
110 | #define GET_MAGIC H_GET_32 | |
111 | #define PUT_WORD H_PUT_32 | |
112 | #define PUT_MAGIC H_PUT_32 | |
252b5132 | 113 | #ifndef NAME |
e43d48cc | 114 | #define NAME(x,y) CONCAT3 (x,_32_,y) |
252b5132 | 115 | #endif |
e43d48cc | 116 | #define JNAME(x) CONCAT2 (x,_32) |
252b5132 RH |
117 | #define BYTES_IN_WORD 4 |
118 | #endif /* ARCH_SIZE==32 */ | |
e135f41b | 119 | #endif /* ARCH_SIZE==64 */ |
252b5132 RH |
120 | |
121 | /* Declare at file level, since used in parameter lists, which have | |
122 | weird scope. */ | |
123 | struct external_exec; | |
124 | struct external_nlist; | |
125 | struct reloc_ext_external; | |
126 | struct reloc_std_external; | |
127 | \f | |
128 | /* a.out backend linker hash table entries. */ | |
129 | ||
130 | struct aout_link_hash_entry | |
131 | { | |
132 | struct bfd_link_hash_entry root; | |
133 | /* Whether this symbol has been written out. */ | |
b34976b6 | 134 | bfd_boolean written; |
252b5132 RH |
135 | /* Symbol index in output file. */ |
136 | int indx; | |
137 | }; | |
138 | ||
139 | /* a.out backend linker hash table. */ | |
140 | ||
141 | struct aout_link_hash_table | |
142 | { | |
143 | struct bfd_link_hash_table root; | |
144 | }; | |
145 | ||
146 | /* Look up an entry in an a.out link hash table. */ | |
147 | ||
148 | #define aout_link_hash_lookup(table, string, create, copy, follow) \ | |
149 | ((struct aout_link_hash_entry *) \ | |
150 | bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow))) | |
151 | ||
152 | /* Traverse an a.out link hash table. */ | |
153 | ||
154 | #define aout_link_hash_traverse(table, func, info) \ | |
155 | (bfd_link_hash_traverse \ | |
156 | (&(table)->root, \ | |
b34976b6 | 157 | (bfd_boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ |
252b5132 RH |
158 | (info))) |
159 | ||
160 | /* Get the a.out link hash table from the info structure. This is | |
161 | just a cast. */ | |
162 | ||
163 | #define aout_hash_table(p) ((struct aout_link_hash_table *) ((p)->hash)) | |
164 | \f | |
165 | /* Back-end information for various a.out targets. */ | |
166 | struct aout_backend_data | |
167 | { | |
168 | /* Are ZMAGIC files mapped contiguously? If so, the text section may | |
169 | need more padding, if the segment size (granularity for memory access | |
170 | control) is larger than the page size. */ | |
171 | unsigned char zmagic_mapped_contiguous; | |
172 | /* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the | |
173 | text section, which starts immediately after the file header. | |
174 | If not, the text section starts on the next page. */ | |
175 | unsigned char text_includes_header; | |
176 | ||
177 | /* If this flag is set, then if the entry address is not in the | |
178 | first SEGMENT_SIZE bytes of the text section, it is taken to be | |
179 | the address of the start of the text section. This can be useful | |
180 | for kernels. */ | |
181 | unsigned char entry_is_text_address; | |
182 | ||
183 | /* The value to pass to N_SET_FLAGS. */ | |
184 | unsigned char exec_hdr_flags; | |
185 | ||
186 | /* If the text section VMA isn't specified, and we need an absolute | |
187 | address, use this as the default. If we're producing a relocatable | |
188 | file, zero is always used. */ | |
189 | /* ?? Perhaps a callback would be a better choice? Will this do anything | |
190 | reasonable for a format that handles multiple CPUs with different | |
191 | load addresses for each? */ | |
192 | bfd_vma default_text_vma; | |
193 | ||
194 | /* Callback for setting the page and segment sizes, if they can't be | |
195 | trivially determined from the architecture. */ | |
b34976b6 | 196 | bfd_boolean (*set_sizes) |
dc810e39 | 197 | PARAMS ((bfd *)); |
252b5132 RH |
198 | |
199 | /* zmagic files only. For go32, the length of the exec header contributes | |
200 | to the size of the text section in the file for alignment purposes but | |
201 | does *not* get counted in the length of the text section. */ | |
202 | unsigned char exec_header_not_counted; | |
203 | ||
204 | /* Callback from the add symbols phase of the linker code to handle | |
205 | a dynamic object. */ | |
b34976b6 | 206 | bfd_boolean (*add_dynamic_symbols) |
dc810e39 AM |
207 | PARAMS ((bfd *, struct bfd_link_info *, struct external_nlist **, |
208 | bfd_size_type *, char **)); | |
252b5132 RH |
209 | |
210 | /* Callback from the add symbols phase of the linker code to handle | |
211 | adding a single symbol to the global linker hash table. */ | |
b34976b6 | 212 | bfd_boolean (*add_one_symbol) |
dc810e39 | 213 | PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword, |
b34976b6 | 214 | asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean, |
dc810e39 | 215 | struct bfd_link_hash_entry **)); |
252b5132 RH |
216 | |
217 | /* Called to handle linking a dynamic object. */ | |
b34976b6 | 218 | bfd_boolean (*link_dynamic_object) |
dc810e39 | 219 | PARAMS ((struct bfd_link_info *, bfd *)); |
252b5132 RH |
220 | |
221 | /* Called for each global symbol being written out by the linker. | |
222 | This should write out the dynamic symbol information. */ | |
b34976b6 | 223 | bfd_boolean (*write_dynamic_symbol) |
dc810e39 | 224 | PARAMS ((bfd *, struct bfd_link_info *, struct aout_link_hash_entry *)); |
252b5132 RH |
225 | |
226 | /* If this callback is not NULL, the linker calls it for each reloc. | |
227 | RELOC is a pointer to the unswapped reloc. If *SKIP is set to | |
b34976b6 | 228 | TRUE, the reloc will be skipped. *RELOCATION may be changed to |
252b5132 | 229 | change the effects of the relocation. */ |
b34976b6 | 230 | bfd_boolean (*check_dynamic_reloc) |
dc810e39 AM |
231 | PARAMS ((struct bfd_link_info *info, bfd *input_bfd, |
232 | asection *input_section, struct aout_link_hash_entry *h, | |
b34976b6 | 233 | PTR reloc, bfd_byte *contents, bfd_boolean *skip, |
dc810e39 | 234 | bfd_vma *relocation)); |
252b5132 RH |
235 | |
236 | /* Called at the end of a link to finish up any dynamic linking | |
237 | information. */ | |
b34976b6 | 238 | bfd_boolean (*finish_dynamic_link) |
dc810e39 | 239 | PARAMS ((bfd *, struct bfd_link_info *)); |
252b5132 RH |
240 | }; |
241 | #define aout_backend_info(abfd) \ | |
dc810e39 | 242 | ((const struct aout_backend_data *)((abfd)->xvec->backend_data)) |
252b5132 RH |
243 | |
244 | /* This is the layout in memory of a "struct exec" while we process it. | |
245 | All 'lengths' are given as a number of bytes. | |
246 | All 'alignments' are for relinkable files only; an alignment of | |
247 | 'n' indicates the corresponding segment must begin at an | |
248 | address that is a multiple of (2**n). */ | |
249 | ||
250 | struct internal_exec | |
251 | { | |
aca305d9 NC |
252 | long a_info; /* Magic number and flags, packed. */ |
253 | bfd_vma a_text; /* Length of text, in bytes. */ | |
254 | bfd_vma a_data; /* Length of data, in bytes. */ | |
255 | bfd_vma a_bss; /* Length of uninitialized data area in mem. */ | |
256 | bfd_vma a_syms; /* Length of symbol table data in file. */ | |
257 | bfd_vma a_entry; /* Start address. */ | |
258 | bfd_vma a_trsize; /* Length of text's relocation info, in bytes. */ | |
259 | bfd_vma a_drsize; /* Length of data's relocation info, in bytes. */ | |
260 | /* Added for i960 */ | |
261 | bfd_vma a_tload; /* Text runtime load address. */ | |
262 | bfd_vma a_dload; /* Data runtime load address. */ | |
263 | unsigned char a_talign; /* Alignment of text segment. */ | |
264 | unsigned char a_dalign; /* Alignment of data segment. */ | |
265 | unsigned char a_balign; /* Alignment of bss segment. */ | |
266 | char a_relaxable; /* Enough info for linker relax. */ | |
252b5132 RH |
267 | }; |
268 | ||
dc810e39 | 269 | /* Magic number is written |
aca305d9 NC |
270 | < MSB > |
271 | 3130292827262524232221201918171615141312111009080706050403020100 | |
272 | < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */ | |
273 | ||
252b5132 | 274 | /* Magic number for NetBSD is |
aca305d9 NC |
275 | <MSB > |
276 | 3130292827262524232221201918171615141312111009080706050403020100 | |
277 | < FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */ | |
252b5132 | 278 | |
aca305d9 NC |
279 | enum machine_type |
280 | { | |
252b5132 RH |
281 | M_UNKNOWN = 0, |
282 | M_68010 = 1, | |
283 | M_68020 = 2, | |
284 | M_SPARC = 3, | |
e6af3a53 NC |
285 | /* Skip a bunch so we don't run into any of SUN's numbers. */ |
286 | /* Make these up for the ns32k. */ | |
aca305d9 NC |
287 | M_NS32032 = (64), /* NS32032 running ? */ |
288 | M_NS32532 = (64 + 5), /* NS32532 running mach. */ | |
252b5132 | 289 | M_386 = 100, |
aca305d9 NC |
290 | M_29K = 101, /* AMD 29000. */ |
291 | M_386_DYNIX = 102, /* Sequent running dynix. */ | |
292 | M_ARM = 103, /* Advanced Risc Machines ARM. */ | |
293 | M_SPARCLET = 131, /* SPARClet = M_SPARC + 128. */ | |
294 | M_386_NETBSD = 134, /* NetBSD/i386 binary. */ | |
295 | M_68K_NETBSD = 135, /* NetBSD/m68k binary. */ | |
296 | M_68K4K_NETBSD = 136, /* NetBSD/m68k4k binary. */ | |
297 | M_532_NETBSD = 137, /* NetBSD/ns32k binary. */ | |
298 | M_SPARC_NETBSD = 138, /* NetBSD/sparc binary. */ | |
299 | M_PMAX_NETBSD = 139, /* NetBSD/pmax (MIPS little-endian) binary. */ | |
300 | M_VAX_NETBSD = 140, /* NetBSD/vax binary. */ | |
301 | M_ALPHA_NETBSD = 141, /* NetBSD/alpha binary. */ | |
302 | M_ARM6_NETBSD = 143, /* NetBSD/arm32 binary. */ | |
303 | M_SPARCLET_1 = 147, /* 0x93, reserved. */ | |
304 | M_VAX4K_NETBSD = 150, /* NetBSD/vax 4K pages binary. */ | |
305 | M_MIPS1 = 151, /* MIPS R2000/R3000 binary. */ | |
306 | M_MIPS2 = 152, /* MIPS R4000/R6000 binary. */ | |
307 | M_SPARC64_NETBSD = 156, /* NetBSD/sparc64 binary. */ | |
308 | M_X86_64_NETBSD = 157, /* NetBSD/amd64 binary. */ | |
309 | M_SPARCLET_2 = 163, /* 0xa3, reserved. */ | |
310 | M_SPARCLET_3 = 179, /* 0xb3, reserved. */ | |
311 | M_SPARCLET_4 = 195, /* 0xc3, reserved. */ | |
312 | M_HP200 = 200, /* HP 200 (68010) BSD binary. */ | |
313 | M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary. */ | |
314 | M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary. */ | |
315 | M_SPARCLET_5 = 211, /* 0xd3, reserved. */ | |
316 | M_SPARCLET_6 = 227, /* 0xe3, reserved. */ | |
317 | /*M_SPARCLET_7 = 243 / * 0xf3, reserved. */ | |
06c15ad7 | 318 | M_SPARCLITE_LE = 243, |
aca305d9 | 319 | M_CRIS = 255 /* Axis CRIS binary. */ |
252b5132 RH |
320 | }; |
321 | ||
322 | #define N_DYNAMIC(exec) ((exec).a_info & 0x80000000) | |
323 | ||
324 | #ifndef N_MAGIC | |
325 | # define N_MAGIC(exec) ((exec).a_info & 0xffff) | |
326 | #endif | |
327 | ||
328 | #ifndef N_MACHTYPE | |
329 | # define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) | |
330 | #endif | |
331 | ||
332 | #ifndef N_FLAGS | |
333 | # define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff) | |
334 | #endif | |
335 | ||
336 | #ifndef N_SET_INFO | |
337 | # define N_SET_INFO(exec, magic, type, flags) \ | |
338 | ((exec).a_info = ((magic) & 0xffff) \ | |
339 | | (((int)(type) & 0xff) << 16) \ | |
340 | | (((flags) & 0xff) << 24)) | |
341 | #endif | |
342 | ||
343 | #ifndef N_SET_DYNAMIC | |
344 | # define N_SET_DYNAMIC(exec, dynamic) \ | |
67a374a5 | 345 | ((exec).a_info = (dynamic) ? (long) ((exec).a_info | 0x80000000) : \ |
252b5132 RH |
346 | ((exec).a_info & 0x7fffffff)) |
347 | #endif | |
348 | ||
349 | #ifndef N_SET_MAGIC | |
350 | # define N_SET_MAGIC(exec, magic) \ | |
351 | ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff))) | |
352 | #endif | |
353 | ||
354 | #ifndef N_SET_MACHTYPE | |
355 | # define N_SET_MACHTYPE(exec, machtype) \ | |
356 | ((exec).a_info = \ | |
357 | ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16)) | |
358 | #endif | |
359 | ||
360 | #ifndef N_SET_FLAGS | |
361 | # define N_SET_FLAGS(exec, flags) \ | |
362 | ((exec).a_info = \ | |
363 | ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24)) | |
364 | #endif | |
365 | ||
aca305d9 NC |
366 | typedef struct aout_symbol |
367 | { | |
252b5132 RH |
368 | asymbol symbol; |
369 | short desc; | |
370 | char other; | |
371 | unsigned char type; | |
372 | } aout_symbol_type; | |
373 | ||
374 | /* The `tdata' struct for all a.out-like object file formats. | |
375 | Various things depend on this struct being around any time an a.out | |
376 | file is being handled. An example is dbxread.c in GDB. */ | |
377 | ||
aca305d9 NC |
378 | struct aoutdata |
379 | { | |
380 | struct internal_exec *hdr; /* Exec file header. */ | |
381 | aout_symbol_type *symbols; /* Symtab for input bfd. */ | |
dc810e39 | 382 | |
e6af3a53 | 383 | /* For ease, we do this. */ |
252b5132 RH |
384 | asection *textsec; |
385 | asection *datasec; | |
386 | asection *bsssec; | |
387 | ||
388 | /* We remember these offsets so that after check_file_format, we have | |
389 | no dependencies on the particular format of the exec_hdr. */ | |
390 | file_ptr sym_filepos; | |
391 | file_ptr str_filepos; | |
392 | ||
e6af3a53 | 393 | /* Size of a relocation entry in external form. */ |
252b5132 RH |
394 | unsigned reloc_entry_size; |
395 | ||
e6af3a53 | 396 | /* Size of a symbol table entry in external form. */ |
252b5132 RH |
397 | unsigned symbol_entry_size; |
398 | ||
e6af3a53 | 399 | /* Page size - needed for alignment of demand paged files. */ |
252b5132 RH |
400 | unsigned long page_size; |
401 | ||
e6af3a53 | 402 | /* Segment size - needed for alignment of demand paged files. */ |
252b5132 RH |
403 | unsigned long segment_size; |
404 | ||
405 | /* Zmagic disk block size - need to align the start of the text | |
406 | section in ZMAGIC binaries. Normally the same as page_size. */ | |
407 | unsigned long zmagic_disk_block_size; | |
408 | ||
409 | unsigned exec_bytes_size; | |
410 | unsigned vma_adjusted : 1; | |
411 | ||
e6af3a53 | 412 | /* Used when a bfd supports several highly similar formats. */ |
252b5132 RH |
413 | enum |
414 | { | |
415 | default_format = 0, | |
416 | /* Used on HP 9000/300 running HP/UX. See hp300hpux.c. */ | |
417 | gnu_encap_format, | |
418 | /* Used on Linux, 386BSD, etc. See include/aout/aout64.h. */ | |
419 | q_magic_format | |
420 | } subformat; | |
421 | ||
422 | enum | |
423 | { | |
424 | undecided_magic = 0, | |
425 | z_magic, | |
426 | o_magic, | |
427 | n_magic | |
428 | } magic; | |
429 | ||
430 | /* A buffer for find_nearest_line. */ | |
431 | char *line_buf; | |
432 | ||
433 | /* The external symbol information. */ | |
434 | struct external_nlist *external_syms; | |
435 | bfd_size_type external_sym_count; | |
436 | bfd_window sym_window; | |
437 | char *external_strings; | |
438 | bfd_size_type external_string_size; | |
439 | bfd_window string_window; | |
440 | struct aout_link_hash_entry **sym_hashes; | |
441 | ||
442 | /* A pointer for shared library information. */ | |
443 | PTR dynamic_info; | |
444 | ||
445 | /* A mapping from local symbols to offsets into the global offset | |
446 | table, used when linking on SunOS. This is indexed by the symbol | |
447 | index. */ | |
448 | bfd_vma *local_got_offsets; | |
449 | }; | |
450 | ||
aca305d9 NC |
451 | struct aout_data_struct |
452 | { | |
453 | struct aoutdata a; | |
454 | struct internal_exec e; | |
252b5132 RH |
455 | }; |
456 | ||
aca305d9 NC |
457 | #define adata(bfd) ((bfd)->tdata.aout_data->a) |
458 | #define exec_hdr(bfd) (adata (bfd).hdr) | |
459 | #define obj_aout_symbols(bfd) (adata (bfd).symbols) | |
460 | #define obj_textsec(bfd) (adata (bfd).textsec) | |
461 | #define obj_datasec(bfd) (adata (bfd).datasec) | |
462 | #define obj_bsssec(bfd) (adata (bfd).bsssec) | |
463 | #define obj_sym_filepos(bfd) (adata (bfd).sym_filepos) | |
464 | #define obj_str_filepos(bfd) (adata (bfd).str_filepos) | |
465 | #define obj_reloc_entry_size(bfd) (adata (bfd).reloc_entry_size) | |
466 | #define obj_symbol_entry_size(bfd) (adata (bfd).symbol_entry_size) | |
467 | #define obj_aout_subformat(bfd) (adata (bfd).subformat) | |
468 | #define obj_aout_external_syms(bfd) (adata (bfd).external_syms) | |
469 | #define obj_aout_external_sym_count(bfd) (adata (bfd).external_sym_count) | |
470 | #define obj_aout_sym_window(bfd) (adata (bfd).sym_window) | |
471 | #define obj_aout_external_strings(bfd) (adata (bfd).external_strings) | |
472 | #define obj_aout_external_string_size(bfd) (adata (bfd).external_string_size) | |
473 | #define obj_aout_string_window(bfd) (adata (bfd).string_window) | |
474 | #define obj_aout_sym_hashes(bfd) (adata (bfd).sym_hashes) | |
475 | #define obj_aout_dynamic_info(bfd) (adata (bfd).dynamic_info) | |
252b5132 RH |
476 | |
477 | /* We take the address of the first element of an asymbol to ensure that the | |
e6af3a53 | 478 | macro is only ever applied to an asymbol. */ |
252b5132 RH |
479 | #define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd)) |
480 | ||
481 | /* Information we keep for each a.out section. This is currently only | |
482 | used by the a.out backend linker. */ | |
483 | ||
484 | struct aout_section_data_struct | |
485 | { | |
486 | /* The unswapped relocation entries for this section. */ | |
487 | PTR relocs; | |
488 | }; | |
489 | ||
490 | #define aout_section_data(s) \ | |
491 | ((struct aout_section_data_struct *) (s)->used_by_bfd) | |
492 | ||
493 | #define set_aout_section_data(s,v) \ | |
494 | ((s)->used_by_bfd = (PTR)&(v)->relocs) | |
495 | ||
e6af3a53 | 496 | /* Prototype declarations for functions defined in aoutx.h. */ |
252b5132 | 497 | |
b34976b6 | 498 | extern bfd_boolean NAME(aout,squirt_out_relocs) |
dc810e39 | 499 | PARAMS ((bfd *, asection *)); |
252b5132 | 500 | |
b34976b6 | 501 | extern bfd_boolean NAME(aout,make_sections) |
dc810e39 | 502 | PARAMS ((bfd *)); |
252b5132 | 503 | |
dc810e39 AM |
504 | extern const bfd_target * NAME(aout,some_aout_object_p) |
505 | PARAMS ((bfd *, struct internal_exec *, const bfd_target *(*) (bfd *))); | |
252b5132 | 506 | |
b34976b6 | 507 | extern bfd_boolean NAME(aout,mkobject) |
dc810e39 | 508 | PARAMS ((bfd *)); |
252b5132 | 509 | |
dc810e39 | 510 | extern enum machine_type NAME(aout,machine_type) |
b34976b6 | 511 | PARAMS ((enum bfd_architecture, unsigned long, bfd_boolean *)); |
252b5132 | 512 | |
b34976b6 | 513 | extern bfd_boolean NAME(aout,set_arch_mach) |
dc810e39 | 514 | PARAMS ((bfd *, enum bfd_architecture, unsigned long)); |
252b5132 | 515 | |
b34976b6 | 516 | extern bfd_boolean NAME(aout,new_section_hook) |
dc810e39 | 517 | PARAMS ((bfd *, asection *)); |
252b5132 | 518 | |
b34976b6 | 519 | extern bfd_boolean NAME(aout,set_section_contents) |
0f867abe | 520 | PARAMS ((bfd *, sec_ptr, const PTR, file_ptr, bfd_size_type)); |
252b5132 | 521 | |
dc810e39 AM |
522 | extern asymbol * NAME(aout,make_empty_symbol) |
523 | PARAMS ((bfd *)); | |
252b5132 | 524 | |
b34976b6 | 525 | extern bfd_boolean NAME(aout,translate_symbol_table) |
dc810e39 | 526 | PARAMS ((bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type, |
b34976b6 | 527 | char *, bfd_size_type, bfd_boolean)); |
252b5132 | 528 | |
b34976b6 | 529 | extern bfd_boolean NAME(aout,slurp_symbol_table) |
dc810e39 | 530 | PARAMS ((bfd *)); |
252b5132 | 531 | |
b34976b6 | 532 | extern bfd_boolean NAME(aout,write_syms) |
dc810e39 | 533 | PARAMS ((bfd *)); |
252b5132 | 534 | |
dc810e39 AM |
535 | extern void NAME(aout,reclaim_symbol_table) |
536 | PARAMS ((bfd *)); | |
252b5132 | 537 | |
dc810e39 AM |
538 | extern long NAME(aout,get_symtab_upper_bound) |
539 | PARAMS ((bfd *)); | |
252b5132 | 540 | |
6cee3f79 | 541 | extern long NAME(aout,canonicalize_symtab) |
dc810e39 | 542 | PARAMS ((bfd *, asymbol **)); |
252b5132 | 543 | |
dc810e39 AM |
544 | extern void NAME(aout,swap_ext_reloc_in) |
545 | PARAMS ((bfd *, struct reloc_ext_external *, arelent *, asymbol **, | |
546 | bfd_size_type)); | |
547 | extern void NAME(aout,swap_std_reloc_in) | |
548 | PARAMS ((bfd *, struct reloc_std_external *, arelent *, asymbol **, | |
549 | bfd_size_type)); | |
252b5132 | 550 | |
dc810e39 AM |
551 | extern reloc_howto_type * NAME(aout,reloc_type_lookup) |
552 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
252b5132 | 553 | |
b34976b6 | 554 | extern bfd_boolean NAME(aout,slurp_reloc_table) |
dc810e39 | 555 | PARAMS ((bfd *, sec_ptr, asymbol **)); |
252b5132 | 556 | |
dc810e39 AM |
557 | extern long NAME(aout,canonicalize_reloc) |
558 | PARAMS ((bfd *, sec_ptr, arelent **, asymbol **)); | |
252b5132 | 559 | |
dc810e39 AM |
560 | extern long NAME(aout,get_reloc_upper_bound) |
561 | PARAMS ((bfd *, sec_ptr)); | |
252b5132 | 562 | |
dc810e39 AM |
563 | extern void NAME(aout,reclaim_reloc) |
564 | PARAMS ((bfd *, sec_ptr)); | |
252b5132 | 565 | |
dc810e39 AM |
566 | extern alent * NAME(aout,get_lineno) |
567 | PARAMS ((bfd *, asymbol *)); | |
252b5132 | 568 | |
dc810e39 AM |
569 | extern void NAME(aout,print_symbol) |
570 | PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type)); | |
252b5132 | 571 | |
dc810e39 AM |
572 | extern void NAME(aout,get_symbol_info) |
573 | PARAMS ((bfd *, asymbol *, symbol_info *)); | |
252b5132 | 574 | |
b34976b6 | 575 | extern bfd_boolean NAME(aout,find_nearest_line) |
dc810e39 AM |
576 | PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **, |
577 | const char **, unsigned int *)); | |
252b5132 | 578 | |
dc810e39 | 579 | extern long NAME(aout,read_minisymbols) |
b34976b6 | 580 | PARAMS ((bfd *, bfd_boolean, PTR *, unsigned int *)); |
252b5132 | 581 | |
dc810e39 | 582 | extern asymbol * NAME(aout,minisymbol_to_symbol) |
b34976b6 | 583 | PARAMS ((bfd *, bfd_boolean, const PTR, asymbol *)); |
252b5132 | 584 | |
dc810e39 | 585 | extern int NAME(aout,sizeof_headers) |
b34976b6 | 586 | PARAMS ((bfd *, bfd_boolean)); |
252b5132 | 587 | |
b34976b6 | 588 | extern bfd_boolean NAME(aout,adjust_sizes_and_vmas) |
dc810e39 | 589 | PARAMS ((bfd *, bfd_size_type *, file_ptr *)); |
252b5132 | 590 | |
dc810e39 AM |
591 | extern void NAME(aout,swap_exec_header_in) |
592 | PARAMS ((bfd *, struct external_exec *, struct internal_exec *)); | |
252b5132 | 593 | |
dc810e39 AM |
594 | extern void NAME(aout,swap_exec_header_out) |
595 | PARAMS ((bfd *, struct internal_exec *, struct external_exec *)); | |
252b5132 | 596 | |
dc810e39 | 597 | extern struct bfd_hash_entry * NAME(aout,link_hash_newfunc) |
252b5132 RH |
598 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
599 | ||
b34976b6 | 600 | extern bfd_boolean NAME(aout,link_hash_table_init) |
dc810e39 AM |
601 | PARAMS ((struct aout_link_hash_table *, bfd *, |
602 | struct bfd_hash_entry *(*) (struct bfd_hash_entry *, | |
603 | struct bfd_hash_table *, | |
604 | const char *))); | |
252b5132 | 605 | |
dc810e39 AM |
606 | extern struct bfd_link_hash_table * NAME(aout,link_hash_table_create) |
607 | PARAMS ((bfd *)); | |
252b5132 | 608 | |
b34976b6 | 609 | extern bfd_boolean NAME(aout,link_add_symbols) |
dc810e39 | 610 | PARAMS ((bfd *, struct bfd_link_info *)); |
252b5132 | 611 | |
b34976b6 | 612 | extern bfd_boolean NAME(aout,final_link) |
dc810e39 AM |
613 | PARAMS ((bfd *, struct bfd_link_info *, |
614 | void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *))); | |
252b5132 | 615 | |
b34976b6 | 616 | extern bfd_boolean NAME(aout,bfd_free_cached_info) |
dc810e39 | 617 | PARAMS ((bfd *)); |
252b5132 | 618 | |
e6af3a53 | 619 | /* A.out uses the generic versions of these routines... */ |
252b5132 | 620 | |
e135f41b NC |
621 | #define aout_16_get_section_contents _bfd_generic_get_section_contents |
622 | ||
252b5132 RH |
623 | #define aout_32_get_section_contents _bfd_generic_get_section_contents |
624 | ||
625 | #define aout_64_get_section_contents _bfd_generic_get_section_contents | |
626 | #ifndef NO_WRITE_HEADER_KLUDGE | |
627 | #define NO_WRITE_HEADER_KLUDGE 0 | |
628 | #endif | |
629 | ||
630 | #ifndef aout_32_bfd_is_local_label_name | |
631 | #define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name | |
632 | #endif | |
633 | ||
634 | #ifndef WRITE_HEADERS | |
635 | #define WRITE_HEADERS(abfd, execp) \ | |
636 | { \ | |
aca305d9 | 637 | bfd_size_type text_size; /* Dummy vars. */ \ |
252b5132 RH |
638 | file_ptr text_end; \ |
639 | if (adata(abfd).magic == undecided_magic) \ | |
640 | NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); \ | |
641 | \ | |
642 | execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \ | |
643 | execp->a_entry = bfd_get_start_address (abfd); \ | |
644 | \ | |
645 | execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \ | |
646 | obj_reloc_entry_size (abfd)); \ | |
647 | execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \ | |
648 | obj_reloc_entry_size (abfd)); \ | |
649 | NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \ | |
650 | \ | |
dc810e39 | 651 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 \ |
aca305d9 | 652 | || bfd_bwrite ((PTR) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE,\ |
dc810e39 | 653 | abfd) != EXEC_BYTES_SIZE) \ |
b34976b6 | 654 | return FALSE; \ |
e6af3a53 | 655 | /* Now write out reloc info, followed by syms and strings. */ \ |
252b5132 RH |
656 | \ |
657 | if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \ | |
658 | && bfd_get_symcount (abfd) != 0) \ | |
659 | { \ | |
dc810e39 | 660 | if (bfd_seek (abfd, (file_ptr) (N_SYMOFF(*execp)), SEEK_SET) != 0)\ |
b34976b6 | 661 | return FALSE; \ |
252b5132 | 662 | \ |
dc810e39 | 663 | if (! NAME(aout,write_syms) (abfd)) \ |
b34976b6 | 664 | return FALSE; \ |
252b5132 RH |
665 | } \ |
666 | \ | |
aca305d9 | 667 | if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*execp)), SEEK_SET) != 0) \ |
b34976b6 | 668 | return FALSE; \ |
252b5132 | 669 | if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) \ |
b34976b6 | 670 | return FALSE; \ |
252b5132 | 671 | \ |
aca305d9 | 672 | if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp)), SEEK_SET) != 0) \ |
b34976b6 | 673 | return FALSE; \ |
dc810e39 | 674 | if (!NAME(aout,squirt_out_relocs) (abfd, obj_datasec (abfd))) \ |
b34976b6 | 675 | return FALSE; \ |
dc810e39 | 676 | } |
252b5132 RH |
677 | #endif |
678 | ||
e6af3a53 NC |
679 | /* Test if a read-only section can be merged with .text. This is |
680 | possible if: | |
681 | ||
682 | 1. Section has file contents and is read-only. | |
683 | 2. The VMA of the section is after the end of .text and before | |
684 | the start of .data. | |
685 | 3. The image is demand-pageable (otherwise, a_text in the header | |
686 | will not reflect the gap between .text and .data). */ | |
687 | ||
688 | #define aout_section_merge_with_text_p(abfd, sec) \ | |
689 | (((sec)->flags & (SEC_HAS_CONTENTS | SEC_READONLY)) == \ | |
690 | (SEC_HAS_CONTENTS | SEC_READONLY) \ | |
691 | && obj_textsec (abfd) != NULL \ | |
692 | && obj_datasec (abfd) != NULL \ | |
693 | && (sec)->vma >= (obj_textsec (abfd)->vma + \ | |
694 | obj_textsec (abfd)->_cooked_size) \ | |
695 | && ((sec)->vma + (sec)->_cooked_size) <= obj_datasec (abfd)->vma \ | |
696 | && ((abfd)->flags & D_PAGED) != 0) | |
697 | ||
252b5132 | 698 | #endif /* ! defined (LIBAOUT_H) */ |