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e135f41b | 1 | /* BFD back-end for PDP-11 a.out binaries. |
e92d460e | 2 | Copyright 2001, 2002 Free Software Foundation, Inc. |
e135f41b | 3 | |
42ef282f | 4 | This file is part of BFD, the Binary File Descriptor library. |
e135f41b | 5 | |
42ef282f NC |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
e135f41b | 10 | |
42ef282f NC |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
e135f41b | 15 | |
42ef282f NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
e135f41b NC |
19 | |
20 | /* BFD backend for PDP-11, running 2.11BSD in particular. | |
21 | ||
22 | This file was hacked up by looking hard at the existing vaxnetbsd | |
23 | back end and the header files in 2.11BSD. | |
24 | ||
25 | TODO | |
26 | * support for V7 file formats | |
27 | * support for overlay object files (see 2.11 a.out(5)) | |
28 | * support for old and very old archives | |
29 | (see 2.11 ar(5), historical section) | |
dc810e39 | 30 | |
e135f41b NC |
31 | Search for TODO to find other areas needing more work. */ |
32 | ||
33 | #define BYTES_IN_WORD 2 | |
34 | #define BYTES_IN_LONG 4 | |
35 | #define ARCH_SIZE 16 | |
36 | #undef TARGET_IS_BIG_ENDIAN_P | |
37 | ||
38 | #define TARGET_PAGE_SIZE 1024 | |
39 | #define SEGMENT__SIZE TARGET_PAGE_SIZE | |
40 | ||
41 | #define DEFAULT_ARCH bfd_arch_pdp11 | |
42 | #define DEFAULT_MID M_PDP11 | |
43 | ||
e43d48cc AM |
44 | /* Do not "beautify" the CONCAT* macro args. Traditional C will not |
45 | remove whitespace added here, and thus will fail to concatenate | |
46 | the tokens. */ | |
47 | #define MY(OP) CONCAT2 (pdp11_aout_,OP) | |
48 | ||
e135f41b NC |
49 | /* This needs to start with a.out so GDB knows it is an a.out variant. */ |
50 | #define TARGETNAME "a.out-pdp11" | |
51 | ||
52 | /* This is the normal load address for executables. */ | |
53 | #define TEXT_START_ADDR 0 | |
54 | ||
55 | /* The header is not included in the text segment. */ | |
56 | #define N_HEADER_IN_TEXT(x) 0 | |
57 | ||
58 | /* There are no shared libraries. */ | |
59 | #define N_SHARED_LIB(x) 0 | |
60 | ||
61 | /* There is no flags field. */ | |
62 | #define N_FLAGS(exec) 0 | |
63 | ||
64 | #define N_SET_FLAGS(exec, flags) do { } while (0) | |
65 | #define N_BADMAG(x) (((x).a_info != OMAGIC) && \ | |
66 | ((x).a_info != NMAGIC) && \ | |
67 | ((x).a_info != A_MAGIC3) && \ | |
68 | ((x).a_info != A_MAGIC4) && \ | |
69 | ((x).a_info != A_MAGIC5) && \ | |
70 | ((x).a_info != A_MAGIC6)) | |
71 | ||
72 | #include "bfd.h" | |
73 | ||
74 | #define external_exec pdp11_external_exec | |
75 | struct pdp11_external_exec | |
76 | { | |
77 | bfd_byte e_info[2]; /* magic number */ | |
78 | bfd_byte e_text[2]; /* length of text section in bytes */ | |
79 | bfd_byte e_data[2]; /* length of data section in bytes */ | |
80 | bfd_byte e_bss[2]; /* length of bss area in bytes */ | |
81 | bfd_byte e_syms[2]; /* length of symbol table in bytes */ | |
82 | bfd_byte e_entry[2]; /* start address */ | |
83 | bfd_byte e_unused[2]; /* not used */ | |
84 | bfd_byte e_flag[2]; /* relocation info stripped */ | |
85 | bfd_byte e_relocatable; /* ugly hack */ | |
86 | }; | |
87 | ||
88 | #define EXEC_BYTES_SIZE (8 * 2) | |
89 | ||
90 | #define A_MAGIC1 OMAGIC | |
91 | #define OMAGIC 0407 /* ...object file or impure executable. */ | |
92 | #define A_MAGIC2 NMAGIC | |
93 | #define NMAGIC 0410 /* pure executable. */ | |
94 | #define ZMAGIC 0413 /* demand-paged executable. */ | |
95 | #define A_MAGIC3 0411 /* separated I&D */ | |
96 | #define A_MAGIC4 0405 /* overlay */ | |
97 | #define A_MAGIC5 0430 /* auto-overlay (nonseparate) */ | |
98 | #define A_MAGIC6 0431 /* auto-overlay (separate) */ | |
99 | #define QMAGIC 0 | |
100 | #define BMAGIC 0 | |
101 | ||
102 | #define A_FLAG_RELOC_STRIPPED 0x0001 | |
103 | ||
104 | #define external_nlist pdp11_external_nlist | |
105 | struct pdp11_external_nlist | |
106 | { | |
107 | bfd_byte e_unused[2]; /* unused */ | |
108 | bfd_byte e_strx[2]; /* index into string table of name */ | |
109 | bfd_byte e_type[1]; /* type of symbol */ | |
110 | bfd_byte e_ovly[1]; /* overlay number */ | |
111 | bfd_byte e_value[2]; /* value of symbol */ | |
112 | }; | |
113 | ||
114 | #define EXTERNAL_NLIST_SIZE 8 | |
115 | ||
116 | #define N_TXTOFF(x) (EXEC_BYTES_SIZE) | |
117 | #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) | |
118 | #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) | |
119 | #define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize) | |
120 | #define N_SYMOFF(x) (N_DRELOFF(x) + (x).a_drsize) | |
121 | #define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms) | |
122 | ||
123 | #define WRITE_HEADERS(abfd, execp) pdp11_aout_write_headers (abfd, execp) | |
124 | ||
125 | #include "sysdep.h" | |
126 | #include "libbfd.h" | |
127 | #include "libaout.h" | |
128 | ||
129 | #define SWAP_MAGIC(ext) bfd_getl16 (ext) | |
130 | ||
131 | #define MY_entry_is_text_address 1 | |
132 | ||
133 | #define MY_write_object_contents MY(write_object_contents) | |
134 | static boolean MY(write_object_contents) PARAMS ((bfd *abfd)); | |
135 | #define MY_text_includes_header 1 | |
136 | ||
137 | bfd_vma bfd_getp32 PARAMS ((const bfd_byte *)); | |
138 | bfd_signed_vma bfd_getp_signed_32 PARAMS ((const bfd_byte *)); | |
139 | void bfd_putp32 PARAMS ((bfd_vma, bfd_byte *)); | |
140 | ||
141 | #define MY_BFD_TARGET | |
142 | ||
143 | #include "aout-target.h" | |
144 | ||
145 | const bfd_target MY(vec) = | |
146 | { | |
147 | TARGETNAME, /* name */ | |
148 | bfd_target_aout_flavour, | |
149 | BFD_ENDIAN_LITTLE, /* target byte order (little) */ | |
150 | BFD_ENDIAN_LITTLE, /* target headers byte order (little) */ | |
151 | (HAS_RELOC | EXEC_P | /* object flags */ | |
152 | HAS_LINENO | HAS_DEBUG | | |
153 | HAS_SYMS | HAS_LOCALS | WP_TEXT), | |
154 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA), | |
155 | MY_symbol_leading_char, | |
156 | AR_PAD_CHAR, /* ar_pad_char */ | |
157 | 15, /* ar_max_namelen */ | |
158 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
159 | bfd_getp32, bfd_getp_signed_32, bfd_putp32, | |
160 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ | |
161 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
162 | bfd_getp32, bfd_getp_signed_32, bfd_putp32, | |
163 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ | |
164 | {_bfd_dummy_target, MY_object_p, /* bfd_check_format */ | |
165 | bfd_generic_archive_p, MY_core_file_p}, | |
166 | {bfd_false, MY_mkobject, /* bfd_set_format */ | |
167 | _bfd_generic_mkarchive, bfd_false}, | |
168 | {bfd_false, MY_write_object_contents, /* bfd_write_contents */ | |
169 | _bfd_write_archive_contents, bfd_false}, | |
170 | ||
171 | BFD_JUMP_TABLE_GENERIC (MY), | |
172 | BFD_JUMP_TABLE_COPY (MY), | |
173 | BFD_JUMP_TABLE_CORE (MY), | |
174 | BFD_JUMP_TABLE_ARCHIVE (MY), | |
175 | BFD_JUMP_TABLE_SYMBOLS (MY), | |
176 | BFD_JUMP_TABLE_RELOCS (MY), | |
177 | BFD_JUMP_TABLE_WRITE (MY), | |
178 | BFD_JUMP_TABLE_LINK (MY), | |
179 | BFD_JUMP_TABLE_DYNAMIC (MY), | |
180 | ||
181 | /* Alternative_target */ | |
182 | NULL, | |
dc810e39 | 183 | |
e135f41b NC |
184 | (PTR) MY_backend_data, |
185 | }; | |
186 | ||
187 | /* start of modified aoutx.h */ | |
188 | /* BFD semi-generic back-end for a.out binaries. | |
189 | Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 1998 | |
190 | Free Software Foundation, Inc. | |
191 | Written by Cygnus Support. | |
192 | ||
193 | This file is part of BFD, the Binary File Descriptor library. | |
194 | ||
195 | This program is free software; you can redistribute it and/or modify | |
196 | it under the terms of the GNU General Public License as published by | |
197 | the Free Software Foundation; either version 2 of the License, or | |
198 | (at your option) any later version. | |
199 | ||
200 | This program is distributed in the hope that it will be useful, | |
201 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
202 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
203 | GNU General Public License for more details. | |
204 | ||
205 | You should have received a copy of the GNU General Public License | |
206 | along with this program; if not, write to the Free Software | |
207 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
208 | ||
209 | /* | |
210 | SECTION | |
211 | a.out backends | |
212 | ||
213 | ||
214 | DESCRIPTION | |
215 | ||
216 | BFD supports a number of different flavours of a.out format, | |
217 | though the major differences are only the sizes of the | |
218 | structures on disk, and the shape of the relocation | |
219 | information. | |
220 | ||
221 | The support is split into a basic support file @file{aoutx.h} | |
222 | and other files which derive functions from the base. One | |
223 | derivation file is @file{aoutf1.h} (for a.out flavour 1), and | |
224 | adds to the basic a.out functions support for sun3, sun4, 386 | |
225 | and 29k a.out files, to create a target jump vector for a | |
226 | specific target. | |
227 | ||
228 | This information is further split out into more specific files | |
229 | for each machine, including @file{sunos.c} for sun3 and sun4, | |
230 | @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a | |
231 | demonstration of a 64 bit a.out format. | |
232 | ||
233 | The base file @file{aoutx.h} defines general mechanisms for | |
234 | reading and writing records to and from disk and various | |
235 | other methods which BFD requires. It is included by | |
236 | @file{aout32.c} and @file{aout64.c} to form the names | |
237 | <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc. | |
238 | ||
239 | As an example, this is what goes on to make the back end for a | |
240 | sun4, from @file{aout32.c}: | |
241 | ||
242 | | #define ARCH_SIZE 32 | |
243 | | #include "aoutx.h" | |
244 | ||
245 | Which exports names: | |
246 | ||
247 | | ... | |
248 | | aout_32_canonicalize_reloc | |
249 | | aout_32_find_nearest_line | |
250 | | aout_32_get_lineno | |
251 | | aout_32_get_reloc_upper_bound | |
252 | | ... | |
253 | ||
254 | from @file{sunos.c}: | |
255 | ||
256 | | #define TARGET_NAME "a.out-sunos-big" | |
257 | | #define VECNAME sunos_big_vec | |
258 | | #include "aoutf1.h" | |
259 | ||
260 | requires all the names from @file{aout32.c}, and produces the jump vector | |
261 | ||
262 | | sunos_big_vec | |
263 | ||
264 | The file @file{host-aout.c} is a special case. It is for a large set | |
265 | of hosts that use ``more or less standard'' a.out files, and | |
266 | for which cross-debugging is not interesting. It uses the | |
267 | standard 32-bit a.out support routines, but determines the | |
268 | file offsets and addresses of the text, data, and BSS | |
269 | sections, the machine architecture and machine type, and the | |
270 | entry point address, in a host-dependent manner. Once these | |
271 | values have been determined, generic code is used to handle | |
272 | the object file. | |
273 | ||
274 | When porting it to run on a new system, you must supply: | |
275 | ||
276 | | HOST_PAGE_SIZE | |
277 | | HOST_SEGMENT_SIZE | |
278 | | HOST_MACHINE_ARCH (optional) | |
279 | | HOST_MACHINE_MACHINE (optional) | |
280 | | HOST_TEXT_START_ADDR | |
281 | | HOST_STACK_END_ADDR | |
282 | ||
283 | in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These | |
284 | values, plus the structures and macros defined in @file{a.out.h} on | |
285 | your host system, will produce a BFD target that will access | |
286 | ordinary a.out files on your host. To configure a new machine | |
287 | to use @file{host-aout.c}, specify: | |
288 | ||
289 | | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec | |
290 | | TDEPFILES= host-aout.o trad-core.o | |
291 | ||
292 | in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in} | |
293 | to use the | |
294 | @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your | |
295 | configuration is selected. | |
296 | ||
297 | */ | |
298 | ||
299 | /* Some assumptions: | |
300 | * Any BFD with D_PAGED set is ZMAGIC, and vice versa. | |
301 | Doesn't matter what the setting of WP_TEXT is on output, but it'll | |
302 | get set on input. | |
303 | * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC. | |
304 | * Any BFD with both flags clear is OMAGIC. | |
305 | (Just want to make these explicit, so the conditions tested in this | |
306 | file make sense if you're more familiar with a.out than with BFD.) */ | |
307 | ||
308 | #define KEEPIT udata.i | |
309 | ||
310 | #include <string.h> /* For strchr and friends */ | |
e135f41b NC |
311 | #include "bfd.h" |
312 | #include "sysdep.h" | |
3882b010 | 313 | #include "safe-ctype.h" |
e135f41b NC |
314 | #include "bfdlink.h" |
315 | ||
316 | #include "libaout.h" | |
317 | /*#include "libbfd.h"*/ | |
318 | #include "aout/aout64.h" | |
319 | #include "aout/stab_gnu.h" | |
320 | #include "aout/ar.h" | |
321 | ||
322 | #undef N_TYPE | |
323 | #undef N_UNDF | |
324 | #undef N_ABS | |
325 | #undef N_TEXT | |
326 | #undef N_DATA | |
327 | #undef N_BSS | |
328 | #undef N_REG | |
329 | #undef N_FN | |
330 | #undef N_EXT | |
331 | #define N_TYPE 0x1f /* type mask */ | |
332 | #define N_UNDF 0x00 /* undefined */ | |
333 | #define N_ABS 0x01 /* absolute */ | |
334 | #define N_TEXT 0x02 /* text segment */ | |
335 | #define N_DATA 0x03 /* data segment */ | |
336 | #define N_BSS 0x04 /* bss segment */ | |
337 | #define N_REG 0x14 /* register symbol */ | |
338 | #define N_FN 0x1f /* file name */ | |
339 | ||
340 | #define N_EXT 0x20 /* external flag */ | |
341 | ||
342 | #define RELOC_SIZE 2 | |
343 | ||
344 | struct pdp11_aout_reloc_external | |
345 | { | |
346 | bfd_byte e_reloc_entry[2]; | |
347 | }; | |
348 | ||
349 | #define RELFLG 0x0001 /* pc-relative flag */ | |
350 | #define RTYPE 0x000e /* type mask */ | |
351 | #define RIDXMASK 0xfff0 /* index mask */ | |
352 | ||
353 | #define RABS 0x00 /* absolute */ | |
354 | #define RTEXT 0x02 /* text */ | |
355 | #define RDATA 0x04 /* data */ | |
356 | #define RBSS 0x06 /* bss */ | |
357 | #define REXT 0x08 /* external */ | |
358 | ||
359 | #define RINDEX(x) (((x) & 0xfff0) >> 4) | |
360 | ||
361 | static boolean aout_get_external_symbols PARAMS ((bfd *)); | |
362 | static boolean translate_from_native_sym_flags | |
363 | PARAMS ((bfd *, aout_symbol_type *)); | |
364 | static boolean translate_to_native_sym_flags | |
365 | PARAMS ((bfd *, asymbol *, struct external_nlist *)); | |
366 | static void adjust_o_magic PARAMS ((bfd *, struct internal_exec *)); | |
367 | static void adjust_z_magic PARAMS ((bfd *, struct internal_exec *)); | |
368 | static void adjust_n_magic PARAMS ((bfd *, struct internal_exec *)); | |
369 | ||
42ef282f NC |
370 | static int pdp11_aout_write_headers PARAMS ((bfd *, struct internal_exec *)); |
371 | void pdp11_aout_swap_reloc_out PARAMS ((bfd *, arelent *, struct pdp11_aout_reloc_external *)); | |
372 | void pdp11_aout_swap_reloc_in | |
373 | PARAMS ((bfd *, struct pdp11_aout_reloc_external *, arelent *, | |
374 | bfd_size_type, asymbol **, bfd_size_type)); | |
375 | ||
e135f41b NC |
376 | /* |
377 | SUBSECTION | |
378 | Relocations | |
379 | ||
380 | DESCRIPTION | |
381 | The file @file{aoutx.h} provides for both the @emph{standard} | |
382 | and @emph{extended} forms of a.out relocation records. | |
383 | ||
384 | The standard records contain only an | |
385 | address, a symbol index, and a type field. The extended records | |
386 | (used on 29ks and sparcs) also have a full integer for an | |
387 | addend. | |
388 | ||
389 | */ | |
390 | ||
391 | #ifndef MY_final_link_relocate | |
392 | #define MY_final_link_relocate _bfd_final_link_relocate | |
393 | #endif | |
394 | ||
395 | #ifndef MY_relocate_contents | |
396 | #define MY_relocate_contents _bfd_relocate_contents | |
397 | #endif | |
398 | ||
399 | reloc_howto_type howto_table_pdp11[] = | |
400 | { | |
401 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ | |
402 | HOWTO( 0, 0, 1, 16, false, 0, complain_overflow_signed,0,"16", true, 0x0000ffff,0x0000ffff, false), | |
403 | HOWTO( 1, 0, 1, 16, true, 0, complain_overflow_signed,0,"DISP16", true, 0x0000ffff,0x0000ffff, false), | |
404 | }; | |
405 | ||
406 | #define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0])) | |
407 | ||
408 | reloc_howto_type * | |
409 | NAME(aout,reloc_type_lookup) (abfd,code) | |
410 | bfd * abfd ATTRIBUTE_UNUSED; | |
411 | bfd_reloc_code_real_type code; | |
412 | { | |
413 | switch (code) | |
414 | { | |
415 | case BFD_RELOC_16: | |
416 | return &howto_table_pdp11[0]; | |
417 | case BFD_RELOC_16_PCREL: | |
418 | return &howto_table_pdp11[1]; | |
419 | default: | |
420 | return (reloc_howto_type *)NULL; | |
421 | } | |
422 | } | |
423 | ||
424 | static int | |
425 | pdp11_aout_write_headers (abfd, execp) | |
426 | bfd *abfd; | |
427 | struct internal_exec *execp; | |
428 | { | |
429 | struct external_exec exec_bytes; | |
430 | bfd_size_type text_size; | |
431 | file_ptr text_end; | |
432 | ||
433 | if (adata(abfd).magic == undecided_magic) | |
434 | NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); | |
435 | ||
436 | execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; | |
437 | execp->a_entry = bfd_get_start_address (abfd); | |
438 | ||
439 | if (obj_textsec (abfd)->reloc_count > 0 || | |
440 | obj_datasec (abfd)->reloc_count > 0) | |
441 | { | |
442 | execp->a_trsize = execp->a_text; | |
443 | execp->a_drsize = execp->a_data; | |
444 | } | |
445 | else | |
446 | { | |
447 | execp->a_trsize = 0; | |
448 | execp->a_drsize = 0; | |
449 | } | |
450 | ||
451 | NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); | |
452 | ||
453 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) | |
454 | return false; | |
455 | ||
dc810e39 | 456 | if (bfd_bwrite ((PTR) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, abfd) |
e135f41b NC |
457 | != EXEC_BYTES_SIZE) |
458 | return false; | |
459 | ||
460 | /* Now write out reloc info, followed by syms and strings */ | |
461 | ||
462 | if (bfd_get_outsymbols (abfd) != (asymbol **) NULL | |
463 | && bfd_get_symcount (abfd) != 0) | |
464 | { | |
dc810e39 | 465 | if (bfd_seek (abfd, (file_ptr) (N_SYMOFF(*execp)), SEEK_SET) != 0) |
e135f41b NC |
466 | return false; |
467 | ||
dc810e39 AM |
468 | if (! NAME(aout,write_syms) (abfd)) |
469 | return false; | |
e135f41b NC |
470 | } |
471 | ||
472 | if (obj_textsec (abfd)->reloc_count > 0 || | |
473 | obj_datasec (abfd)->reloc_count > 0) | |
474 | { | |
dc810e39 | 475 | if (bfd_seek (abfd, (file_ptr) (N_TRELOFF(*execp)), SEEK_SET) != 0) |
e135f41b NC |
476 | return false; |
477 | if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) | |
478 | return false; | |
479 | ||
dc810e39 | 480 | if (bfd_seek (abfd, (file_ptr) (N_DRELOFF(*execp)), SEEK_SET) != 0) |
e135f41b | 481 | return false; |
dc810e39 | 482 | if (!NAME(aout,squirt_out_relocs) (abfd, obj_datasec (abfd))) |
e135f41b NC |
483 | return false; |
484 | } | |
485 | ||
486 | return true; | |
dc810e39 | 487 | } |
e135f41b NC |
488 | |
489 | /* Write an object file. | |
490 | Section contents have already been written. We write the | |
491 | file header, symbols, and relocation. */ | |
492 | ||
493 | static boolean | |
494 | MY(write_object_contents) (abfd) | |
495 | bfd *abfd; | |
496 | { | |
497 | struct internal_exec *execp = exec_hdr (abfd); | |
498 | ||
499 | /* We must make certain that the magic number has been set. This | |
500 | will normally have been done by set_section_contents, but only if | |
501 | there actually are some section contents. */ | |
502 | if (! abfd->output_has_begun) | |
503 | { | |
504 | bfd_size_type text_size; | |
505 | file_ptr text_end; | |
506 | ||
507 | NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); | |
508 | } | |
509 | ||
510 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
511 | ||
512 | return WRITE_HEADERS(abfd, execp); | |
513 | } | |
514 | ||
515 | /* | |
516 | SUBSECTION | |
517 | Internal entry points | |
518 | ||
519 | DESCRIPTION | |
520 | @file{aoutx.h} exports several routines for accessing the | |
521 | contents of an a.out file, which are gathered and exported in | |
522 | turn by various format specific files (eg sunos.c). | |
523 | ||
524 | */ | |
525 | ||
526 | /* | |
527 | FUNCTION | |
528 | aout_@var{size}_swap_exec_header_in | |
529 | ||
530 | SYNOPSIS | |
531 | void aout_@var{size}_swap_exec_header_in, | |
532 | (bfd *abfd, | |
533 | struct external_exec *raw_bytes, | |
534 | struct internal_exec *execp); | |
535 | ||
536 | DESCRIPTION | |
537 | Swap the information in an executable header @var{raw_bytes} taken | |
538 | from a raw byte stream memory image into the internal exec header | |
539 | structure @var{execp}. | |
540 | */ | |
541 | ||
542 | #ifndef NAME_swap_exec_header_in | |
543 | void | |
544 | NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp) | |
545 | bfd *abfd; | |
546 | struct external_exec *raw_bytes; | |
547 | struct internal_exec *execp; | |
548 | { | |
549 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
550 | ||
551 | /* The internal_exec structure has some fields that are unused in this | |
552 | configuration (IE for i960), so ensure that all such uninitialized | |
553 | fields are zero'd out. There are places where two of these structs | |
554 | are memcmp'd, and thus the contents do matter. */ | |
555 | memset ((PTR) execp, 0, sizeof (struct internal_exec)); | |
556 | /* Now fill in fields in the execp, from the bytes in the raw data. */ | |
557 | execp->a_info = GET_MAGIC (abfd, bytes->e_info); | |
558 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
559 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
560 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
561 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
562 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
563 | ||
564 | if (GET_WORD (abfd, bytes->e_flag) & A_FLAG_RELOC_STRIPPED) | |
565 | { | |
566 | execp->a_trsize = 0; | |
567 | execp->a_drsize = 0; | |
568 | } | |
569 | else | |
570 | { | |
571 | execp->a_trsize = execp->a_text; | |
572 | execp->a_drsize = execp->a_data; | |
573 | } | |
574 | } | |
575 | #define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in) | |
576 | #endif | |
577 | ||
578 | /* | |
579 | FUNCTION | |
580 | aout_@var{size}_swap_exec_header_out | |
581 | ||
582 | SYNOPSIS | |
583 | void aout_@var{size}_swap_exec_header_out | |
584 | (bfd *abfd, | |
585 | struct internal_exec *execp, | |
586 | struct external_exec *raw_bytes); | |
587 | ||
588 | DESCRIPTION | |
589 | Swap the information in an internal exec header structure | |
590 | @var{execp} into the buffer @var{raw_bytes} ready for writing to disk. | |
591 | */ | |
592 | void | |
593 | NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes) | |
594 | bfd *abfd; | |
595 | struct internal_exec *execp; | |
596 | struct external_exec *raw_bytes; | |
597 | { | |
598 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
599 | ||
600 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ | |
601 | PUT_MAGIC (abfd, execp->a_info, bytes->e_info); | |
602 | PUT_WORD (abfd, execp->a_text, bytes->e_text); | |
603 | PUT_WORD (abfd, execp->a_data, bytes->e_data); | |
604 | PUT_WORD (abfd, execp->a_bss, bytes->e_bss); | |
605 | PUT_WORD (abfd, execp->a_syms, bytes->e_syms); | |
606 | PUT_WORD (abfd, execp->a_entry, bytes->e_entry); | |
607 | PUT_WORD (abfd, 0, bytes->e_unused); | |
608 | ||
609 | if ((execp->a_trsize == 0 || execp->a_text == 0) && | |
610 | (execp->a_drsize == 0 || execp->a_data == 0)) | |
611 | PUT_WORD (abfd, A_FLAG_RELOC_STRIPPED, bytes->e_flag); | |
612 | else if (execp->a_trsize == execp->a_text && | |
613 | execp->a_drsize == execp->a_data) | |
614 | PUT_WORD (abfd, 0, bytes->e_flag); | |
615 | else | |
616 | { | |
617 | /* TODO: print a proper warning message */ | |
618 | fprintf (stderr, "BFD:%s:%d: internal error\n", __FILE__, __LINE__); | |
619 | PUT_WORD (abfd, 0, bytes->e_flag); | |
620 | } | |
621 | } | |
622 | ||
623 | /* Make all the section for an a.out file. */ | |
624 | ||
625 | boolean | |
626 | NAME(aout,make_sections) (abfd) | |
627 | bfd *abfd; | |
628 | { | |
629 | if (obj_textsec (abfd) == (asection *) NULL | |
630 | && bfd_make_section (abfd, ".text") == (asection *) NULL) | |
631 | return false; | |
632 | if (obj_datasec (abfd) == (asection *) NULL | |
633 | && bfd_make_section (abfd, ".data") == (asection *) NULL) | |
634 | return false; | |
635 | if (obj_bsssec (abfd) == (asection *) NULL | |
636 | && bfd_make_section (abfd, ".bss") == (asection *) NULL) | |
637 | return false; | |
638 | return true; | |
639 | } | |
640 | ||
641 | /* | |
642 | FUNCTION | |
643 | aout_@var{size}_some_aout_object_p | |
644 | ||
645 | SYNOPSIS | |
646 | const bfd_target *aout_@var{size}_some_aout_object_p | |
647 | (bfd *abfd, | |
648 | const bfd_target *(*callback_to_real_object_p)()); | |
649 | ||
650 | DESCRIPTION | |
651 | Some a.out variant thinks that the file open in @var{abfd} | |
652 | checking is an a.out file. Do some more checking, and set up | |
653 | for access if it really is. Call back to the calling | |
654 | environment's "finish up" function just before returning, to | |
655 | handle any last-minute setup. | |
656 | */ | |
657 | ||
658 | const bfd_target * | |
659 | NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p) | |
660 | bfd *abfd; | |
661 | struct internal_exec *execp; | |
662 | const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *)); | |
663 | { | |
664 | struct aout_data_struct *rawptr, *oldrawptr; | |
665 | const bfd_target *result; | |
dc810e39 | 666 | bfd_size_type amt = sizeof (struct aout_data_struct); |
e135f41b | 667 | |
dc810e39 | 668 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); |
e135f41b NC |
669 | if (rawptr == NULL) |
670 | return 0; | |
671 | ||
672 | oldrawptr = abfd->tdata.aout_data; | |
673 | abfd->tdata.aout_data = rawptr; | |
674 | ||
675 | /* Copy the contents of the old tdata struct. | |
676 | In particular, we want the subformat, since for hpux it was set in | |
677 | hp300hpux.c:swap_exec_header_in and will be used in | |
678 | hp300hpux.c:callback. */ | |
679 | if (oldrawptr != NULL) | |
680 | *abfd->tdata.aout_data = *oldrawptr; | |
681 | ||
682 | abfd->tdata.aout_data->a.hdr = &rawptr->e; | |
683 | *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */ | |
684 | execp = abfd->tdata.aout_data->a.hdr; | |
685 | ||
686 | /* Set the file flags */ | |
687 | abfd->flags = BFD_NO_FLAGS; | |
688 | if (execp->a_drsize || execp->a_trsize) | |
689 | abfd->flags |= HAS_RELOC; | |
690 | /* Setting of EXEC_P has been deferred to the bottom of this function */ | |
691 | if (execp->a_syms) | |
692 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
693 | if (N_DYNAMIC(*execp)) | |
694 | abfd->flags |= DYNAMIC; | |
695 | ||
696 | if (N_MAGIC (*execp) == ZMAGIC) | |
697 | { | |
698 | abfd->flags |= D_PAGED | WP_TEXT; | |
699 | adata (abfd).magic = z_magic; | |
700 | } | |
701 | else if (N_MAGIC (*execp) == QMAGIC) | |
702 | { | |
703 | abfd->flags |= D_PAGED | WP_TEXT; | |
704 | adata (abfd).magic = z_magic; | |
705 | adata (abfd).subformat = q_magic_format; | |
706 | } | |
707 | else if (N_MAGIC (*execp) == NMAGIC) | |
708 | { | |
709 | abfd->flags |= WP_TEXT; | |
710 | adata (abfd).magic = n_magic; | |
711 | } | |
712 | else if (N_MAGIC (*execp) == OMAGIC | |
713 | || N_MAGIC (*execp) == BMAGIC) | |
714 | adata (abfd).magic = o_magic; | |
715 | else | |
716 | { | |
717 | /* Should have been checked with N_BADMAG before this routine | |
718 | was called. */ | |
719 | abort (); | |
720 | } | |
721 | ||
722 | bfd_get_start_address (abfd) = execp->a_entry; | |
723 | ||
724 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; | |
725 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); | |
726 | ||
727 | /* The default relocation entry size is that of traditional V7 Unix. */ | |
728 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
729 | ||
730 | /* The default symbol entry size is that of traditional Unix. */ | |
731 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; | |
732 | ||
733 | #ifdef USE_MMAP | |
734 | bfd_init_window (&obj_aout_sym_window (abfd)); | |
735 | bfd_init_window (&obj_aout_string_window (abfd)); | |
736 | #endif | |
737 | obj_aout_external_syms (abfd) = NULL; | |
738 | obj_aout_external_strings (abfd) = NULL; | |
739 | obj_aout_sym_hashes (abfd) = NULL; | |
740 | ||
741 | if (! NAME(aout,make_sections) (abfd)) | |
742 | return NULL; | |
743 | ||
744 | obj_datasec (abfd)->_raw_size = execp->a_data; | |
745 | obj_bsssec (abfd)->_raw_size = execp->a_bss; | |
746 | ||
747 | obj_textsec (abfd)->flags = | |
748 | (execp->a_trsize != 0 | |
749 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) | |
750 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
751 | obj_datasec (abfd)->flags = | |
752 | (execp->a_drsize != 0 | |
753 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) | |
754 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
755 | obj_bsssec (abfd)->flags = SEC_ALLOC; | |
756 | ||
757 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
758 | /* The common code can't fill in these things because they depend | |
759 | on either the start address of the text segment, the rounding | |
760 | up of virtual addresses between segments, or the starting file | |
761 | position of the text segment -- all of which varies among different | |
762 | versions of a.out. */ | |
763 | ||
764 | /* Call back to the format-dependent code to fill in the rest of the | |
765 | fields and do any further cleanup. Things that should be filled | |
766 | in by the callback: */ | |
767 | ||
768 | struct exec *execp = exec_hdr (abfd); | |
769 | ||
770 | obj_textsec (abfd)->size = N_TXTSIZE(*execp); | |
771 | obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp); | |
772 | /* data and bss are already filled in since they're so standard */ | |
773 | ||
774 | /* The virtual memory addresses of the sections */ | |
775 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); | |
776 | obj_datasec (abfd)->vma = N_DATADDR(*execp); | |
777 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
778 | ||
779 | /* The file offsets of the sections */ | |
780 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); | |
781 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); | |
782 | ||
783 | /* The file offsets of the relocation info */ | |
784 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); | |
785 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
786 | ||
787 | /* The file offsets of the string table and symbol table. */ | |
788 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
789 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
790 | ||
791 | /* Determine the architecture and machine type of the object file. */ | |
792 | abfd->obj_arch = bfd_arch_obscure; | |
793 | ||
794 | adata(abfd)->page_size = TARGET_PAGE_SIZE; | |
795 | adata(abfd)->segment_size = SEGMENT_SIZE; | |
796 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
797 | ||
798 | return abfd->xvec; | |
799 | ||
800 | /* The architecture is encoded in various ways in various a.out variants, | |
801 | or is not encoded at all in some of them. The relocation size depends | |
802 | on the architecture and the a.out variant. Finally, the return value | |
803 | is the bfd_target vector in use. If an error occurs, return zero and | |
804 | set bfd_error to the appropriate error code. | |
805 | ||
806 | Formats such as b.out, which have additional fields in the a.out | |
807 | header, should cope with them in this callback as well. */ | |
808 | #endif /* DOCUMENTATION */ | |
809 | ||
810 | result = (*callback_to_real_object_p)(abfd); | |
811 | ||
812 | /* Now that the segment addresses have been worked out, take a better | |
813 | guess at whether the file is executable. If the entry point | |
814 | is within the text segment, assume it is. (This makes files | |
815 | executable even if their entry point address is 0, as long as | |
816 | their text starts at zero.). | |
817 | ||
818 | This test had to be changed to deal with systems where the text segment | |
819 | runs at a different location than the default. The problem is that the | |
820 | entry address can appear to be outside the text segment, thus causing an | |
821 | erroneous conclusion that the file isn't executable. | |
822 | ||
823 | To fix this, we now accept any non-zero entry point as an indication of | |
824 | executability. This will work most of the time, since only the linker | |
825 | sets the entry point, and that is likely to be non-zero for most systems. */ | |
826 | ||
827 | if (execp->a_entry != 0 | |
828 | || (execp->a_entry >= obj_textsec(abfd)->vma | |
829 | && execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size)) | |
830 | abfd->flags |= EXEC_P; | |
831 | #ifdef STAT_FOR_EXEC | |
832 | else | |
833 | { | |
834 | struct stat stat_buf; | |
835 | ||
836 | /* The original heuristic doesn't work in some important cases. | |
837 | The a.out file has no information about the text start | |
838 | address. For files (like kernels) linked to non-standard | |
839 | addresses (ld -Ttext nnn) the entry point may not be between | |
840 | the default text start (obj_textsec(abfd)->vma) and | |
841 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
842 | issue. Many kernels are loaded at non standard addresses. */ | |
843 | if (abfd->iostream != NULL | |
844 | && (abfd->flags & BFD_IN_MEMORY) == 0 | |
845 | && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0) | |
846 | && ((stat_buf.st_mode & 0111) != 0)) | |
847 | abfd->flags |= EXEC_P; | |
848 | } | |
849 | #endif /* STAT_FOR_EXEC */ | |
850 | ||
851 | if (result) | |
852 | { | |
853 | #if 0 /* These should be set correctly anyways. */ | |
854 | abfd->sections = obj_textsec (abfd); | |
855 | obj_textsec (abfd)->next = obj_datasec (abfd); | |
856 | obj_datasec (abfd)->next = obj_bsssec (abfd); | |
857 | #endif | |
858 | } | |
859 | else | |
860 | { | |
861 | free (rawptr); | |
862 | abfd->tdata.aout_data = oldrawptr; | |
863 | } | |
864 | return result; | |
865 | } | |
866 | ||
867 | /* | |
868 | FUNCTION | |
869 | aout_@var{size}_mkobject | |
870 | ||
871 | SYNOPSIS | |
872 | boolean aout_@var{size}_mkobject, (bfd *abfd); | |
873 | ||
874 | DESCRIPTION | |
875 | Initialize BFD @var{abfd} for use with a.out files. | |
876 | */ | |
877 | ||
878 | boolean | |
879 | NAME(aout,mkobject) (abfd) | |
880 | bfd *abfd; | |
881 | { | |
882 | struct aout_data_struct *rawptr; | |
dc810e39 | 883 | bfd_size_type amt = sizeof (struct aout_data_struct); |
e135f41b NC |
884 | |
885 | bfd_set_error (bfd_error_system_call); | |
886 | ||
887 | /* Use an intermediate variable for clarity */ | |
dc810e39 | 888 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); |
e135f41b NC |
889 | |
890 | if (rawptr == NULL) | |
891 | return false; | |
892 | ||
893 | abfd->tdata.aout_data = rawptr; | |
894 | exec_hdr (abfd) = &(rawptr->e); | |
895 | ||
896 | obj_textsec (abfd) = (asection *)NULL; | |
897 | obj_datasec (abfd) = (asection *)NULL; | |
898 | obj_bsssec (abfd) = (asection *)NULL; | |
899 | ||
900 | return true; | |
901 | } | |
902 | ||
903 | ||
904 | /* | |
905 | FUNCTION | |
906 | aout_@var{size}_machine_type | |
907 | ||
908 | SYNOPSIS | |
909 | enum machine_type aout_@var{size}_machine_type | |
910 | (enum bfd_architecture arch, | |
911 | unsigned long machine)); | |
912 | ||
913 | DESCRIPTION | |
914 | Keep track of machine architecture and machine type for | |
915 | a.out's. Return the <<machine_type>> for a particular | |
916 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
917 | and machine can't be represented in a.out format. | |
918 | ||
919 | If the architecture is understood, machine type 0 (default) | |
920 | is always understood. | |
921 | */ | |
922 | ||
923 | enum machine_type | |
924 | NAME(aout,machine_type) (arch, machine, unknown) | |
925 | enum bfd_architecture arch; | |
926 | unsigned long machine; | |
927 | boolean *unknown; | |
928 | { | |
929 | enum machine_type arch_flags; | |
930 | ||
931 | arch_flags = M_UNKNOWN; | |
932 | *unknown = true; | |
933 | ||
934 | switch (arch) | |
935 | { | |
936 | case bfd_arch_sparc: | |
937 | if (machine == 0 | |
938 | || machine == bfd_mach_sparc | |
939 | || machine == bfd_mach_sparc_sparclite | |
940 | || machine == bfd_mach_sparc_v9) | |
941 | arch_flags = M_SPARC; | |
942 | else if (machine == bfd_mach_sparc_sparclet) | |
943 | arch_flags = M_SPARCLET; | |
944 | break; | |
945 | ||
946 | case bfd_arch_m68k: | |
947 | switch (machine) | |
948 | { | |
949 | case 0: arch_flags = M_68010; break; | |
950 | case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = false; break; | |
951 | case bfd_mach_m68010: arch_flags = M_68010; break; | |
952 | case bfd_mach_m68020: arch_flags = M_68020; break; | |
953 | default: arch_flags = M_UNKNOWN; break; | |
954 | } | |
955 | break; | |
956 | ||
957 | case bfd_arch_i386: | |
958 | if (machine == 0) arch_flags = M_386; | |
959 | break; | |
960 | ||
961 | case bfd_arch_a29k: | |
962 | if (machine == 0) arch_flags = M_29K; | |
963 | break; | |
964 | ||
965 | case bfd_arch_arm: | |
966 | if (machine == 0) arch_flags = M_ARM; | |
967 | break; | |
968 | ||
969 | case bfd_arch_mips: | |
970 | switch (machine) | |
971 | { | |
972 | case 0: | |
973 | case 2000: | |
974 | case bfd_mach_mips3000: | |
975 | arch_flags = M_MIPS1; | |
976 | break; | |
977 | case bfd_mach_mips4000: /* mips3 */ | |
978 | case bfd_mach_mips4400: | |
979 | case bfd_mach_mips8000: /* mips4 */ | |
980 | case bfd_mach_mips6000: /* real mips2: */ | |
981 | arch_flags = M_MIPS2; | |
982 | break; | |
983 | default: | |
984 | arch_flags = M_UNKNOWN; | |
985 | break; | |
986 | } | |
987 | break; | |
988 | ||
989 | case bfd_arch_ns32k: | |
990 | switch (machine) | |
991 | { | |
992 | case 0: arch_flags = M_NS32532; break; | |
993 | case 32032: arch_flags = M_NS32032; break; | |
994 | case 32532: arch_flags = M_NS32532; break; | |
995 | default: arch_flags = M_UNKNOWN; break; | |
996 | } | |
997 | break; | |
998 | ||
999 | case bfd_arch_pdp11: | |
1000 | /* TODO: arch_flags = M_PDP11; */ | |
1001 | *unknown = false; | |
1002 | break; | |
1003 | ||
1004 | case bfd_arch_vax: | |
1005 | *unknown = false; | |
1006 | break; | |
dc810e39 | 1007 | |
e135f41b NC |
1008 | default: |
1009 | arch_flags = M_UNKNOWN; | |
1010 | } | |
1011 | ||
1012 | if (arch_flags != M_UNKNOWN) | |
1013 | *unknown = false; | |
1014 | ||
1015 | return arch_flags; | |
1016 | } | |
1017 | ||
1018 | ||
1019 | /* | |
1020 | FUNCTION | |
1021 | aout_@var{size}_set_arch_mach | |
1022 | ||
1023 | SYNOPSIS | |
1024 | boolean aout_@var{size}_set_arch_mach, | |
1025 | (bfd *, | |
1026 | enum bfd_architecture arch, | |
1027 | unsigned long machine)); | |
1028 | ||
1029 | DESCRIPTION | |
1030 | Set the architecture and the machine of the BFD @var{abfd} to the | |
1031 | values @var{arch} and @var{machine}. Verify that @var{abfd}'s format | |
1032 | can support the architecture required. | |
1033 | */ | |
1034 | ||
1035 | boolean | |
1036 | NAME(aout,set_arch_mach) (abfd, arch, machine) | |
1037 | bfd *abfd; | |
1038 | enum bfd_architecture arch; | |
1039 | unsigned long machine; | |
1040 | { | |
1041 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) | |
1042 | return false; | |
1043 | ||
1044 | if (arch != bfd_arch_unknown) | |
1045 | { | |
1046 | boolean unknown; | |
1047 | ||
1048 | NAME(aout,machine_type) (arch, machine, &unknown); | |
1049 | if (unknown) | |
1050 | return false; | |
1051 | } | |
1052 | ||
1053 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
1054 | ||
1055 | return (*aout_backend_info(abfd)->set_sizes) (abfd); | |
1056 | } | |
1057 | ||
1058 | static void | |
1059 | adjust_o_magic (abfd, execp) | |
1060 | bfd *abfd; | |
1061 | struct internal_exec *execp; | |
1062 | { | |
1063 | file_ptr pos = adata (abfd).exec_bytes_size; | |
1064 | bfd_vma vma = 0; | |
1065 | int pad = 0; | |
1066 | ||
1067 | /* Text. */ | |
1068 | obj_textsec (abfd)->filepos = pos; | |
1069 | if (! obj_textsec (abfd)->user_set_vma) | |
1070 | obj_textsec (abfd)->vma = vma; | |
1071 | else | |
1072 | vma = obj_textsec (abfd)->vma; | |
1073 | ||
1074 | pos += obj_textsec (abfd)->_raw_size; | |
1075 | vma += obj_textsec (abfd)->_raw_size; | |
1076 | ||
1077 | /* Data. */ | |
1078 | if (!obj_datasec (abfd)->user_set_vma) | |
1079 | { | |
1080 | #if 0 /* ?? Does alignment in the file image really matter? */ | |
1081 | pad = align_power (vma, obj_datasec (abfd)->alignment_power) - vma; | |
1082 | #endif | |
1083 | obj_textsec (abfd)->_raw_size += pad; | |
1084 | pos += pad; | |
1085 | vma += pad; | |
1086 | obj_datasec (abfd)->vma = vma; | |
1087 | } | |
1088 | else | |
1089 | vma = obj_datasec (abfd)->vma; | |
1090 | obj_datasec (abfd)->filepos = pos; | |
1091 | pos += obj_datasec (abfd)->_raw_size; | |
1092 | vma += obj_datasec (abfd)->_raw_size; | |
1093 | ||
1094 | /* BSS. */ | |
1095 | if (! obj_bsssec (abfd)->user_set_vma) | |
1096 | { | |
1097 | #if 0 | |
1098 | pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma; | |
1099 | #endif | |
1100 | obj_datasec (abfd)->_raw_size += pad; | |
1101 | pos += pad; | |
1102 | vma += pad; | |
1103 | obj_bsssec (abfd)->vma = vma; | |
1104 | } | |
1105 | else | |
1106 | { | |
08da05b0 | 1107 | /* The VMA of the .bss section is set by the VMA of the |
e135f41b NC |
1108 | .data section plus the size of the .data section. We may |
1109 | need to add padding bytes to make this true. */ | |
1110 | pad = obj_bsssec (abfd)->vma - vma; | |
1111 | if (pad > 0) | |
1112 | { | |
1113 | obj_datasec (abfd)->_raw_size += pad; | |
1114 | pos += pad; | |
1115 | } | |
1116 | } | |
1117 | obj_bsssec (abfd)->filepos = pos; | |
1118 | ||
1119 | /* Fix up the exec header. */ | |
1120 | execp->a_text = obj_textsec (abfd)->_raw_size; | |
1121 | execp->a_data = obj_datasec (abfd)->_raw_size; | |
1122 | execp->a_bss = obj_bsssec (abfd)->_raw_size; | |
1123 | N_SET_MAGIC (*execp, OMAGIC); | |
1124 | } | |
1125 | ||
1126 | static void | |
1127 | adjust_z_magic (abfd, execp) | |
1128 | bfd *abfd; | |
1129 | struct internal_exec *execp; | |
1130 | { | |
1131 | bfd_size_type data_pad, text_pad; | |
1132 | file_ptr text_end; | |
dc810e39 | 1133 | const struct aout_backend_data *abdp; |
e135f41b | 1134 | int ztih; /* Nonzero if text includes exec header. */ |
dc810e39 | 1135 | |
e135f41b NC |
1136 | abdp = aout_backend_info (abfd); |
1137 | ||
1138 | /* Text. */ | |
1139 | ztih = (abdp != NULL | |
1140 | && (abdp->text_includes_header | |
1141 | || obj_aout_subformat (abfd) == q_magic_format)); | |
1142 | obj_textsec(abfd)->filepos = (ztih | |
1143 | ? adata(abfd).exec_bytes_size | |
1144 | : adata(abfd).zmagic_disk_block_size); | |
1145 | if (! obj_textsec(abfd)->user_set_vma) | |
1146 | { | |
1147 | /* ?? Do we really need to check for relocs here? */ | |
1148 | obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC) | |
1149 | ? 0 | |
1150 | : (ztih | |
1151 | ? (abdp->default_text_vma | |
1152 | + adata (abfd).exec_bytes_size) | |
1153 | : abdp->default_text_vma)); | |
1154 | text_pad = 0; | |
1155 | } | |
1156 | else | |
1157 | { | |
1158 | /* The .text section is being loaded at an unusual address. We | |
1159 | may need to pad it such that the .data section starts at a page | |
1160 | boundary. */ | |
1161 | if (ztih) | |
1162 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
1163 | & (adata (abfd).page_size - 1)); | |
1164 | else | |
1165 | text_pad = ((- obj_textsec (abfd)->vma) | |
1166 | & (adata (abfd).page_size - 1)); | |
1167 | } | |
1168 | ||
1169 | /* Find start of data. */ | |
1170 | if (ztih) | |
1171 | { | |
1172 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size; | |
1173 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; | |
1174 | } | |
1175 | else | |
1176 | { | |
1177 | /* Note that if page_size == zmagic_disk_block_size, then | |
1178 | filepos == page_size, and this case is the same as the ztih | |
1179 | case. */ | |
1180 | text_end = obj_textsec (abfd)->_raw_size; | |
1181 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; | |
1182 | text_end += obj_textsec (abfd)->filepos; | |
1183 | } | |
1184 | ||
1185 | obj_textsec (abfd)->_raw_size += text_pad; | |
1186 | text_end += text_pad; | |
1187 | ||
1188 | /* Data. */ | |
1189 | if (!obj_datasec(abfd)->user_set_vma) | |
1190 | { | |
1191 | bfd_vma vma; | |
1192 | vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size; | |
1193 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
1194 | } | |
1195 | if (abdp && abdp->zmagic_mapped_contiguous) | |
1196 | { | |
1197 | text_pad = (obj_datasec(abfd)->vma | |
1198 | - obj_textsec(abfd)->vma | |
1199 | - obj_textsec(abfd)->_raw_size); | |
1200 | obj_textsec(abfd)->_raw_size += text_pad; | |
1201 | } | |
1202 | obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos | |
1203 | + obj_textsec (abfd)->_raw_size); | |
dc810e39 | 1204 | |
e135f41b NC |
1205 | /* Fix up exec header while we're at it. */ |
1206 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
1207 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) | |
1208 | execp->a_text += adata(abfd).exec_bytes_size; | |
1209 | if (obj_aout_subformat (abfd) == q_magic_format) | |
1210 | N_SET_MAGIC (*execp, QMAGIC); | |
1211 | else | |
1212 | N_SET_MAGIC (*execp, ZMAGIC); | |
1213 | ||
1214 | /* Spec says data section should be rounded up to page boundary. */ | |
1215 | obj_datasec(abfd)->_raw_size | |
1216 | = align_power (obj_datasec(abfd)->_raw_size, | |
1217 | obj_bsssec(abfd)->alignment_power); | |
1218 | execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size, | |
1219 | adata(abfd).page_size); | |
1220 | data_pad = execp->a_data - obj_datasec(abfd)->_raw_size; | |
1221 | ||
1222 | /* BSS. */ | |
1223 | if (!obj_bsssec(abfd)->user_set_vma) | |
1224 | obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma | |
1225 | + obj_datasec(abfd)->_raw_size); | |
1226 | /* If the BSS immediately follows the data section and extra space | |
1227 | in the page is left after the data section, fudge data | |
1228 | in the header so that the bss section looks smaller by that | |
1229 | amount. We'll start the bss section there, and lie to the OS. | |
1230 | (Note that a linker script, as well as the above assignment, | |
1231 | could have explicitly set the BSS vma to immediately follow | |
1232 | the data section.) */ | |
1233 | if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power) | |
1234 | == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size) | |
1235 | execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 : | |
1236 | obj_bsssec(abfd)->_raw_size - data_pad; | |
1237 | else | |
1238 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
1239 | } | |
1240 | ||
1241 | static void | |
1242 | adjust_n_magic (abfd, execp) | |
1243 | bfd *abfd; | |
1244 | struct internal_exec *execp; | |
1245 | { | |
1246 | file_ptr pos = adata(abfd).exec_bytes_size; | |
1247 | bfd_vma vma = 0; | |
1248 | int pad; | |
dc810e39 | 1249 | |
e135f41b NC |
1250 | /* Text. */ |
1251 | obj_textsec(abfd)->filepos = pos; | |
1252 | if (!obj_textsec(abfd)->user_set_vma) | |
1253 | obj_textsec(abfd)->vma = vma; | |
1254 | else | |
1255 | vma = obj_textsec(abfd)->vma; | |
1256 | pos += obj_textsec(abfd)->_raw_size; | |
1257 | vma += obj_textsec(abfd)->_raw_size; | |
1258 | ||
1259 | /* Data. */ | |
1260 | obj_datasec(abfd)->filepos = pos; | |
1261 | if (!obj_datasec(abfd)->user_set_vma) | |
1262 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
1263 | vma = obj_datasec(abfd)->vma; | |
dc810e39 | 1264 | |
e135f41b NC |
1265 | /* Since BSS follows data immediately, see if it needs alignment. */ |
1266 | vma += obj_datasec(abfd)->_raw_size; | |
1267 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
1268 | obj_datasec(abfd)->_raw_size += pad; | |
1269 | pos += obj_datasec(abfd)->_raw_size; | |
1270 | ||
1271 | /* BSS. */ | |
1272 | if (!obj_bsssec(abfd)->user_set_vma) | |
1273 | obj_bsssec(abfd)->vma = vma; | |
1274 | else | |
1275 | vma = obj_bsssec(abfd)->vma; | |
1276 | ||
1277 | /* Fix up exec header. */ | |
1278 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
1279 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
1280 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
1281 | N_SET_MAGIC (*execp, NMAGIC); | |
1282 | } | |
1283 | ||
1284 | boolean | |
1285 | NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end) | |
1286 | bfd *abfd; | |
1287 | bfd_size_type *text_size; | |
1288 | file_ptr * text_end ATTRIBUTE_UNUSED; | |
1289 | { | |
1290 | struct internal_exec *execp = exec_hdr (abfd); | |
1291 | ||
1292 | if (! NAME(aout,make_sections) (abfd)) | |
1293 | return false; | |
1294 | ||
1295 | if (adata(abfd).magic != undecided_magic) | |
1296 | return true; | |
1297 | ||
1298 | obj_textsec(abfd)->_raw_size = | |
1299 | align_power(obj_textsec(abfd)->_raw_size, | |
1300 | obj_textsec(abfd)->alignment_power); | |
1301 | ||
1302 | *text_size = obj_textsec (abfd)->_raw_size; | |
1303 | /* Rule (heuristic) for when to pad to a new page. Note that there | |
1304 | are (at least) two ways demand-paged (ZMAGIC) files have been | |
1305 | handled. Most Berkeley-based systems start the text segment at | |
1306 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text | |
1307 | segment right after the exec header; the latter is counted in the | |
1308 | text segment size, and is paged in by the kernel with the rest of | |
1309 | the text. */ | |
1310 | ||
1311 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1312 | to understand enough to implement it. Better would probably be to go | |
1313 | right from BFD flags to alignment/positioning characteristics. But the | |
1314 | old code was sloppy enough about handling the flags, and had enough | |
1315 | other magic, that it was a little hard for me to understand. I think | |
1316 | I understand it better now, but I haven't time to do the cleanup this | |
1317 | minute. */ | |
1318 | ||
1319 | if (abfd->flags & WP_TEXT) | |
1320 | adata(abfd).magic = n_magic; | |
1321 | else | |
1322 | adata(abfd).magic = o_magic; | |
1323 | ||
1324 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1325 | #if __GNUC__ >= 2 | |
1326 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1327 | ({ char *str; | |
1328 | switch (adata(abfd).magic) { | |
1329 | case n_magic: str = "NMAGIC"; break; | |
1330 | case o_magic: str = "OMAGIC"; break; | |
1331 | case z_magic: str = "ZMAGIC"; break; | |
1332 | default: abort (); | |
1333 | } | |
1334 | str; | |
1335 | }), | |
1336 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, | |
1337 | obj_textsec(abfd)->alignment_power, | |
1338 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, | |
1339 | obj_datasec(abfd)->alignment_power, | |
1340 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size, | |
1341 | obj_bsssec(abfd)->alignment_power); | |
1342 | #endif | |
1343 | #endif | |
1344 | ||
1345 | switch (adata(abfd).magic) | |
1346 | { | |
1347 | case o_magic: | |
1348 | adjust_o_magic (abfd, execp); | |
1349 | break; | |
1350 | case z_magic: | |
1351 | adjust_z_magic (abfd, execp); | |
1352 | break; | |
1353 | case n_magic: | |
1354 | adjust_n_magic (abfd, execp); | |
1355 | break; | |
1356 | default: | |
1357 | abort (); | |
1358 | } | |
1359 | ||
1360 | #ifdef BFD_AOUT_DEBUG | |
1361 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
1362 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, | |
1363 | obj_textsec(abfd)->filepos, | |
1364 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, | |
1365 | obj_datasec(abfd)->filepos, | |
1366 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size); | |
1367 | #endif | |
1368 | ||
1369 | return true; | |
1370 | } | |
1371 | ||
1372 | /* | |
1373 | FUNCTION | |
1374 | aout_@var{size}_new_section_hook | |
1375 | ||
1376 | SYNOPSIS | |
1377 | boolean aout_@var{size}_new_section_hook, | |
1378 | (bfd *abfd, | |
1379 | asection *newsect)); | |
1380 | ||
1381 | DESCRIPTION | |
1382 | Called by the BFD in response to a @code{bfd_make_section} | |
1383 | request. | |
1384 | */ | |
1385 | boolean | |
1386 | NAME(aout,new_section_hook) (abfd, newsect) | |
1387 | bfd *abfd; | |
1388 | asection *newsect; | |
1389 | { | |
1390 | /* align to double at least */ | |
1391 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; | |
1392 | ||
1393 | ||
1394 | if (bfd_get_format (abfd) == bfd_object) | |
1395 | { | |
1396 | if (obj_textsec (abfd) == NULL | |
1397 | && ! strcmp (newsect->name, ".text")) | |
1398 | { | |
1399 | obj_textsec(abfd)= newsect; | |
1400 | newsect->target_index = N_TEXT; | |
1401 | return true; | |
1402 | } | |
1403 | ||
1404 | if (obj_datasec (abfd) == NULL | |
1405 | && ! strcmp (newsect->name, ".data")) | |
1406 | { | |
1407 | obj_datasec (abfd) = newsect; | |
1408 | newsect->target_index = N_DATA; | |
1409 | return true; | |
1410 | } | |
1411 | ||
1412 | if (obj_bsssec (abfd) == NULL | |
1413 | && !strcmp (newsect->name, ".bss")) | |
1414 | { | |
1415 | obj_bsssec (abfd) = newsect; | |
1416 | newsect->target_index = N_BSS; | |
1417 | return true; | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | /* We allow more than three sections internally */ | |
1422 | return true; | |
1423 | } | |
1424 | ||
1425 | boolean | |
1426 | NAME(aout,set_section_contents) (abfd, section, location, offset, count) | |
1427 | bfd *abfd; | |
1428 | sec_ptr section; | |
1429 | PTR location; | |
1430 | file_ptr offset; | |
1431 | bfd_size_type count; | |
1432 | { | |
1433 | file_ptr text_end; | |
1434 | bfd_size_type text_size; | |
1435 | ||
1436 | if (! abfd->output_has_begun) | |
1437 | { | |
1438 | if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
1439 | return false; | |
1440 | } | |
1441 | ||
1442 | if (section == obj_bsssec (abfd)) | |
1443 | { | |
1444 | bfd_set_error (bfd_error_no_contents); | |
1445 | return false; | |
1446 | } | |
1447 | ||
1448 | if (section != obj_textsec (abfd) | |
1449 | && section != obj_datasec (abfd)) | |
1450 | { | |
1451 | (*_bfd_error_handler) | |
1452 | ("%s: can not represent section `%s' in a.out object file format", | |
1453 | bfd_get_filename (abfd), bfd_get_section_name (abfd, section)); | |
1454 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1455 | return false; | |
1456 | } | |
1457 | ||
1458 | if (count != 0) | |
1459 | { | |
1460 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 1461 | || bfd_bwrite (location, count, abfd) != count) |
e135f41b NC |
1462 | return false; |
1463 | } | |
1464 | ||
1465 | return true; | |
1466 | } | |
1467 | \f | |
1468 | /* Read the external symbols from an a.out file. */ | |
1469 | ||
1470 | static boolean | |
1471 | aout_get_external_symbols (abfd) | |
1472 | bfd *abfd; | |
1473 | { | |
1474 | if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL) | |
1475 | { | |
1476 | bfd_size_type count; | |
1477 | struct external_nlist *syms; | |
1478 | ||
1479 | count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; | |
1480 | ||
1481 | #ifdef USE_MMAP | |
1482 | if (bfd_get_file_window (abfd, | |
1483 | obj_sym_filepos (abfd), exec_hdr (abfd)->a_syms, | |
1484 | &obj_aout_sym_window (abfd), true) == false) | |
1485 | return false; | |
1486 | syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; | |
1487 | #else | |
1488 | /* We allocate using malloc to make the values easy to free | |
1489 | later on. If we put them on the objalloc it might not be | |
1490 | possible to free them. */ | |
dc810e39 | 1491 | syms = (struct external_nlist *) bfd_malloc (count * EXTERNAL_NLIST_SIZE); |
e135f41b NC |
1492 | if (syms == (struct external_nlist *) NULL && count != 0) |
1493 | return false; | |
1494 | ||
1495 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
dc810e39 | 1496 | || (bfd_bread (syms, exec_hdr (abfd)->a_syms, abfd) |
e135f41b NC |
1497 | != exec_hdr (abfd)->a_syms)) |
1498 | { | |
1499 | free (syms); | |
1500 | return false; | |
1501 | } | |
1502 | #endif | |
1503 | ||
1504 | obj_aout_external_syms (abfd) = syms; | |
1505 | obj_aout_external_sym_count (abfd) = count; | |
1506 | } | |
dc810e39 | 1507 | |
e135f41b NC |
1508 | if (obj_aout_external_strings (abfd) == NULL |
1509 | && exec_hdr (abfd)->a_syms != 0) | |
1510 | { | |
1511 | unsigned char string_chars[BYTES_IN_LONG]; | |
1512 | bfd_size_type stringsize; | |
1513 | char *strings; | |
1514 | ||
1515 | /* Get the size of the strings. */ | |
1516 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
dc810e39 AM |
1517 | || (bfd_bread ((PTR) string_chars, (bfd_size_type) BYTES_IN_LONG, |
1518 | abfd) != BYTES_IN_LONG)) | |
e135f41b | 1519 | return false; |
dc810e39 | 1520 | stringsize = H_GET_32 (abfd, string_chars); |
e135f41b NC |
1521 | |
1522 | #ifdef USE_MMAP | |
1523 | if (bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize, | |
1524 | &obj_aout_string_window (abfd), true) == false) | |
1525 | return false; | |
1526 | strings = (char *) obj_aout_string_window (abfd).data; | |
1527 | #else | |
dc810e39 | 1528 | strings = (char *) bfd_malloc (stringsize + 1); |
e135f41b NC |
1529 | if (strings == NULL) |
1530 | return false; | |
1531 | ||
1532 | /* Skip space for the string count in the buffer for convenience | |
1533 | when using indexes. */ | |
dc810e39 | 1534 | if (bfd_bread (strings + 4, stringsize - 4, abfd) != stringsize - 4) |
e135f41b NC |
1535 | { |
1536 | free (strings); | |
1537 | return false; | |
1538 | } | |
1539 | #endif | |
1540 | ||
1541 | /* Ensure that a zero index yields an empty string. */ | |
1542 | strings[0] = '\0'; | |
1543 | ||
1544 | strings[stringsize - 1] = 0; | |
1545 | ||
1546 | obj_aout_external_strings (abfd) = strings; | |
1547 | obj_aout_external_string_size (abfd) = stringsize; | |
1548 | } | |
1549 | ||
1550 | return true; | |
1551 | } | |
1552 | ||
1553 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type | |
1554 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1555 | nlist structure. This function is responsible for setting | |
1556 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
1557 | ||
1558 | static boolean | |
1559 | translate_from_native_sym_flags (abfd, cache_ptr) | |
1560 | bfd *abfd; | |
1561 | aout_symbol_type *cache_ptr; | |
1562 | { | |
1563 | flagword visible; | |
1564 | ||
1565 | if (cache_ptr->type == N_FN) | |
1566 | { | |
1567 | asection *sec; | |
1568 | ||
1569 | /* This is a debugging symbol. */ | |
1570 | ||
1571 | cache_ptr->symbol.flags = BSF_DEBUGGING; | |
1572 | ||
1573 | /* Work out the symbol section. */ | |
1574 | switch (cache_ptr->type & N_TYPE) | |
1575 | { | |
1576 | case N_TEXT: | |
1577 | case N_FN: | |
1578 | sec = obj_textsec (abfd); | |
1579 | break; | |
1580 | case N_DATA: | |
1581 | sec = obj_datasec (abfd); | |
1582 | break; | |
1583 | case N_BSS: | |
1584 | sec = obj_bsssec (abfd); | |
1585 | break; | |
1586 | default: | |
1587 | case N_ABS: | |
1588 | sec = bfd_abs_section_ptr; | |
1589 | break; | |
1590 | } | |
1591 | ||
1592 | cache_ptr->symbol.section = sec; | |
1593 | cache_ptr->symbol.value -= sec->vma; | |
1594 | ||
1595 | return true; | |
1596 | } | |
1597 | ||
1598 | /* Get the default visibility. This does not apply to all types, so | |
1599 | we just hold it in a local variable to use if wanted. */ | |
1600 | if ((cache_ptr->type & N_EXT) == 0) | |
1601 | visible = BSF_LOCAL; | |
1602 | else | |
1603 | visible = BSF_GLOBAL; | |
1604 | ||
1605 | switch (cache_ptr->type) | |
1606 | { | |
1607 | default: | |
1608 | case N_ABS: case N_ABS | N_EXT: | |
1609 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1610 | cache_ptr->symbol.flags = visible; | |
1611 | break; | |
1612 | ||
1613 | case N_UNDF | N_EXT: | |
1614 | if (cache_ptr->symbol.value != 0) | |
1615 | { | |
1616 | /* This is a common symbol. */ | |
1617 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
1618 | cache_ptr->symbol.section = bfd_com_section_ptr; | |
1619 | } | |
1620 | else | |
1621 | { | |
1622 | cache_ptr->symbol.flags = 0; | |
1623 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1624 | } | |
1625 | break; | |
1626 | ||
1627 | case N_TEXT: case N_TEXT | N_EXT: | |
1628 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1629 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1630 | cache_ptr->symbol.flags = visible; | |
1631 | break; | |
1632 | ||
1633 | case N_DATA: case N_DATA | N_EXT: | |
1634 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1635 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1636 | cache_ptr->symbol.flags = visible; | |
1637 | break; | |
1638 | ||
1639 | case N_BSS: case N_BSS | N_EXT: | |
1640 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1641 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1642 | cache_ptr->symbol.flags = visible; | |
1643 | break; | |
1644 | } | |
1645 | ||
1646 | return true; | |
1647 | } | |
1648 | ||
1649 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ | |
1650 | ||
1651 | static boolean | |
1652 | translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer) | |
1653 | bfd *abfd; | |
1654 | asymbol *cache_ptr; | |
1655 | struct external_nlist *sym_pointer; | |
1656 | { | |
1657 | bfd_vma value = cache_ptr->value; | |
1658 | asection *sec; | |
1659 | bfd_vma off; | |
1660 | ||
1661 | /* Mask out any existing type bits in case copying from one section | |
1662 | to another. */ | |
1663 | sym_pointer->e_type[0] &= ~N_TYPE; | |
1664 | ||
1665 | sec = bfd_get_section (cache_ptr); | |
1666 | off = 0; | |
1667 | ||
1668 | if (sec == NULL) | |
1669 | { | |
1670 | /* This case occurs, e.g., for the *DEBUG* section of a COFF | |
1671 | file. */ | |
1672 | (*_bfd_error_handler) | |
1673 | ("%s: can not represent section for symbol `%s' in a.out object file format", | |
8f615d07 | 1674 | bfd_archive_filename (abfd), |
e135f41b NC |
1675 | cache_ptr->name != NULL ? cache_ptr->name : "*unknown*"); |
1676 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1677 | return false; | |
1678 | } | |
1679 | ||
1680 | if (sec->output_section != NULL) | |
1681 | { | |
1682 | off = sec->output_offset; | |
1683 | sec = sec->output_section; | |
1684 | } | |
1685 | ||
1686 | if (bfd_is_abs_section (sec)) | |
1687 | sym_pointer->e_type[0] |= N_ABS; | |
1688 | else if (sec == obj_textsec (abfd)) | |
1689 | sym_pointer->e_type[0] |= N_TEXT; | |
1690 | else if (sec == obj_datasec (abfd)) | |
1691 | sym_pointer->e_type[0] |= N_DATA; | |
1692 | else if (sec == obj_bsssec (abfd)) | |
1693 | sym_pointer->e_type[0] |= N_BSS; | |
1694 | else if (bfd_is_und_section (sec)) | |
1695 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1696 | else if (bfd_is_com_section (sec)) | |
1697 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1698 | else | |
1699 | { | |
1700 | (*_bfd_error_handler) | |
1701 | ("%s: can not represent section `%s' in a.out object file format", | |
8f615d07 | 1702 | bfd_archive_filename (abfd), bfd_get_section_name (abfd, sec)); |
e135f41b NC |
1703 | bfd_set_error (bfd_error_nonrepresentable_section); |
1704 | return false; | |
1705 | } | |
1706 | ||
1707 | /* Turn the symbol from section relative to absolute again */ | |
1708 | value += sec->vma + off; | |
1709 | ||
1710 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) | |
1711 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1712 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
1713 | sym_pointer->e_type[0] |= N_EXT; | |
1714 | ||
1715 | #if 0 | |
1716 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1717 | { | |
1718 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
1719 | ||
1720 | ||
1721 | switch (type) | |
1722 | { | |
1723 | case N_ABS: type = N_SETA; break; | |
1724 | case N_TEXT: type = N_SETT; break; | |
1725 | case N_DATA: type = N_SETD; break; | |
1726 | case N_BSS: type = N_SETB; break; | |
1727 | } | |
1728 | sym_pointer->e_type[0] = type; | |
1729 | } | |
1730 | #endif | |
1731 | ||
1732 | #if 0 | |
1733 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1734 | { | |
1735 | int type; | |
1736 | ||
1737 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1738 | { | |
1739 | default: | |
1740 | case N_ABS: type = N_WEAKA; break; | |
1741 | case N_TEXT: type = N_WEAKT; break; | |
1742 | case N_DATA: type = N_WEAKD; break; | |
1743 | case N_BSS: type = N_WEAKB; break; | |
1744 | case N_UNDF: type = N_WEAKU; break; | |
1745 | } | |
1746 | sym_pointer->e_type[0] = type; | |
1747 | } | |
1748 | #endif | |
1749 | ||
1750 | PUT_WORD(abfd, value, sym_pointer->e_value); | |
1751 | ||
1752 | return true; | |
1753 | } | |
1754 | \f | |
1755 | /* Native-level interface to symbols. */ | |
1756 | ||
1757 | asymbol * | |
1758 | NAME(aout,make_empty_symbol) (abfd) | |
1759 | bfd *abfd; | |
1760 | { | |
dc810e39 AM |
1761 | bfd_size_type amt = sizeof (aout_symbol_type); |
1762 | aout_symbol_type *new = (aout_symbol_type *) bfd_zalloc (abfd, amt); | |
e135f41b NC |
1763 | if (!new) |
1764 | return NULL; | |
1765 | new->symbol.the_bfd = abfd; | |
1766 | ||
1767 | return &new->symbol; | |
1768 | } | |
1769 | ||
1770 | /* Translate a set of internal symbols into external symbols. */ | |
1771 | ||
1772 | boolean | |
1773 | NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic) | |
1774 | bfd *abfd; | |
1775 | aout_symbol_type *in; | |
1776 | struct external_nlist *ext; | |
1777 | bfd_size_type count; | |
1778 | char *str; | |
1779 | bfd_size_type strsize; | |
1780 | boolean dynamic; | |
1781 | { | |
1782 | struct external_nlist *ext_end; | |
1783 | ||
1784 | ext_end = ext + count; | |
1785 | for (; ext < ext_end; ext++, in++) | |
1786 | { | |
1787 | bfd_vma x; | |
1788 | ||
1789 | x = GET_WORD (abfd, ext->e_strx); | |
1790 | in->symbol.the_bfd = abfd; | |
1791 | ||
1792 | /* For the normal symbols, the zero index points at the number | |
1793 | of bytes in the string table but is to be interpreted as the | |
1794 | null string. For the dynamic symbols, the number of bytes in | |
1795 | the string table is stored in the __DYNAMIC structure and the | |
1796 | zero index points at an actual string. */ | |
1797 | if (x == 0 && ! dynamic) | |
1798 | in->symbol.name = ""; | |
1799 | else if (x < strsize) | |
1800 | in->symbol.name = str + x; | |
1801 | else | |
1802 | return false; | |
1803 | ||
1804 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
1805 | /* TODO: is 0 a safe value here? */ | |
1806 | in->desc = 0; | |
1807 | in->other = 0; | |
dc810e39 | 1808 | in->type = H_GET_8 (abfd, ext->e_type); |
e135f41b NC |
1809 | in->symbol.udata.p = NULL; |
1810 | ||
1811 | if (! translate_from_native_sym_flags (abfd, in)) | |
1812 | return false; | |
1813 | ||
1814 | if (dynamic) | |
1815 | in->symbol.flags |= BSF_DYNAMIC; | |
1816 | } | |
1817 | ||
1818 | return true; | |
1819 | } | |
1820 | ||
1821 | /* We read the symbols into a buffer, which is discarded when this | |
1822 | function exits. We read the strings into a buffer large enough to | |
1823 | hold them all plus all the cached symbol entries. */ | |
1824 | ||
1825 | boolean | |
1826 | NAME(aout,slurp_symbol_table) (abfd) | |
1827 | bfd *abfd; | |
1828 | { | |
1829 | struct external_nlist *old_external_syms; | |
1830 | aout_symbol_type *cached; | |
dc810e39 | 1831 | bfd_size_type cached_size; |
e135f41b NC |
1832 | |
1833 | /* If there's no work to be done, don't do any */ | |
1834 | if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) | |
1835 | return true; | |
1836 | ||
1837 | old_external_syms = obj_aout_external_syms (abfd); | |
1838 | ||
1839 | if (! aout_get_external_symbols (abfd)) | |
1840 | return false; | |
1841 | ||
dc810e39 AM |
1842 | cached_size = obj_aout_external_sym_count (abfd); |
1843 | cached_size *= sizeof (aout_symbol_type); | |
e135f41b NC |
1844 | cached = (aout_symbol_type *) bfd_malloc (cached_size); |
1845 | if (cached == NULL && cached_size != 0) | |
1846 | return false; | |
1847 | if (cached_size != 0) | |
dc810e39 | 1848 | memset (cached, 0, (size_t) cached_size); |
e135f41b NC |
1849 | |
1850 | /* Convert from external symbol information to internal. */ | |
1851 | if (! (NAME(aout,translate_symbol_table) | |
1852 | (abfd, cached, | |
1853 | obj_aout_external_syms (abfd), | |
1854 | obj_aout_external_sym_count (abfd), | |
1855 | obj_aout_external_strings (abfd), | |
1856 | obj_aout_external_string_size (abfd), | |
1857 | false))) | |
1858 | { | |
1859 | free (cached); | |
1860 | return false; | |
1861 | } | |
1862 | ||
1863 | bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); | |
1864 | ||
1865 | obj_aout_symbols (abfd) = cached; | |
1866 | ||
1867 | /* It is very likely that anybody who calls this function will not | |
1868 | want the external symbol information, so if it was allocated | |
1869 | because of our call to aout_get_external_symbols, we free it up | |
1870 | right away to save space. */ | |
1871 | if (old_external_syms == (struct external_nlist *) NULL | |
1872 | && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
1873 | { | |
1874 | #ifdef USE_MMAP | |
1875 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
1876 | #else | |
1877 | free (obj_aout_external_syms (abfd)); | |
1878 | #endif | |
1879 | obj_aout_external_syms (abfd) = NULL; | |
1880 | } | |
1881 | ||
1882 | return true; | |
1883 | } | |
1884 | \f | |
1885 | /* We use a hash table when writing out symbols so that we only write | |
1886 | out a particular string once. This helps particularly when the | |
1887 | linker writes out stabs debugging entries, because each different | |
1888 | contributing object file tends to have many duplicate stabs | |
1889 | strings. | |
1890 | ||
1891 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it | |
1892 | if BFD_TRADITIONAL_FORMAT is set. */ | |
1893 | ||
1894 | static bfd_size_type add_to_stringtab | |
1895 | PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean)); | |
1896 | static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *)); | |
1897 | ||
1898 | /* Get the index of a string in a strtab, adding it if it is not | |
1899 | already present. */ | |
1900 | ||
1901 | static INLINE bfd_size_type | |
1902 | add_to_stringtab (abfd, tab, str, copy) | |
1903 | bfd *abfd; | |
1904 | struct bfd_strtab_hash *tab; | |
1905 | const char *str; | |
1906 | boolean copy; | |
1907 | { | |
1908 | boolean hash; | |
1909 | bfd_size_type index; | |
1910 | ||
1911 | /* An index of 0 always means the empty string. */ | |
1912 | if (str == 0 || *str == '\0') | |
1913 | return 0; | |
1914 | ||
1915 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx | |
1916 | doesn't understand a hashed string table. */ | |
1917 | hash = true; | |
1918 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
1919 | hash = false; | |
1920 | ||
1921 | index = _bfd_stringtab_add (tab, str, hash, copy); | |
1922 | ||
1923 | if (index != (bfd_size_type) -1) | |
1924 | { | |
1925 | /* Add BYTES_IN_LONG to the return value to account for the | |
1926 | space taken up by the string table size. */ | |
1927 | index += BYTES_IN_LONG; | |
1928 | } | |
1929 | ||
1930 | return index; | |
1931 | } | |
1932 | ||
1933 | /* Write out a strtab. ABFD is already at the right location in the | |
1934 | file. */ | |
1935 | ||
1936 | static boolean | |
1937 | emit_stringtab (abfd, tab) | |
1938 | register bfd *abfd; | |
1939 | struct bfd_strtab_hash *tab; | |
1940 | { | |
1941 | bfd_byte buffer[BYTES_IN_LONG]; | |
1942 | ||
1943 | /* The string table starts with the size. */ | |
dc810e39 AM |
1944 | H_PUT_32 (abfd, _bfd_stringtab_size (tab) + BYTES_IN_LONG, buffer); |
1945 | if (bfd_bwrite ((PTR) buffer, (bfd_size_type) BYTES_IN_LONG, abfd) | |
1946 | != BYTES_IN_LONG) | |
e135f41b NC |
1947 | return false; |
1948 | ||
1949 | return _bfd_stringtab_emit (abfd, tab); | |
1950 | } | |
1951 | \f | |
1952 | boolean | |
1953 | NAME(aout,write_syms) (abfd) | |
1954 | bfd *abfd; | |
1955 | { | |
1956 | unsigned int count ; | |
1957 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1958 | struct bfd_strtab_hash *strtab; | |
1959 | ||
1960 | strtab = _bfd_stringtab_init (); | |
1961 | if (strtab == NULL) | |
1962 | return false; | |
1963 | ||
1964 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1965 | { | |
1966 | asymbol *g = generic[count]; | |
1967 | bfd_size_type indx; | |
1968 | struct external_nlist nsp; | |
1969 | ||
dc810e39 | 1970 | PUT_WORD (abfd, 0, nsp.e_unused); |
e135f41b NC |
1971 | |
1972 | indx = add_to_stringtab (abfd, strtab, g->name, false); | |
1973 | if (indx == (bfd_size_type) -1) | |
1974 | goto error_return; | |
dc810e39 | 1975 | PUT_WORD (abfd, indx, nsp.e_strx); |
e135f41b NC |
1976 | |
1977 | if (bfd_asymbol_flavour(g) == abfd->xvec->flavour) | |
dc810e39 | 1978 | H_PUT_8 (abfd, aout_symbol(g)->type, nsp.e_type); |
e135f41b | 1979 | else |
dc810e39 | 1980 | H_PUT_8 (abfd, 0, nsp.e_type); |
e135f41b NC |
1981 | |
1982 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) | |
1983 | goto error_return; | |
1984 | ||
dc810e39 | 1985 | H_PUT_8 (abfd, 0, nsp.e_ovly); |
e135f41b | 1986 | |
dc810e39 | 1987 | if (bfd_bwrite ((PTR)&nsp, (bfd_size_type) EXTERNAL_NLIST_SIZE, abfd) |
e135f41b NC |
1988 | != EXTERNAL_NLIST_SIZE) |
1989 | goto error_return; | |
1990 | ||
1991 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only | |
1992 | here, at the end. */ | |
1993 | g->KEEPIT = count; | |
1994 | } | |
1995 | ||
1996 | if (! emit_stringtab (abfd, strtab)) | |
1997 | goto error_return; | |
1998 | ||
1999 | _bfd_stringtab_free (strtab); | |
2000 | ||
2001 | return true; | |
2002 | ||
2003 | error_return: | |
2004 | _bfd_stringtab_free (strtab); | |
2005 | return false; | |
2006 | } | |
2007 | ||
2008 | \f | |
2009 | long | |
2010 | NAME(aout,get_symtab) (abfd, location) | |
2011 | bfd *abfd; | |
2012 | asymbol **location; | |
2013 | { | |
2014 | unsigned int counter = 0; | |
2015 | aout_symbol_type *symbase; | |
2016 | ||
2017 | if (!NAME(aout,slurp_symbol_table)(abfd)) | |
2018 | return -1; | |
2019 | ||
2020 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) | |
2021 | *(location++) = (asymbol *)( symbase++); | |
2022 | *location++ =0; | |
2023 | return bfd_get_symcount (abfd); | |
2024 | } | |
2025 | ||
2026 | \f | |
2027 | /* Standard reloc stuff */ | |
2028 | ||
2029 | /* Extended stuff */ | |
2030 | /* Output extended relocation information to a file in target byte order. */ | |
2031 | ||
2032 | void | |
2033 | pdp11_aout_swap_reloc_out (abfd, g, natptr) | |
2034 | bfd *abfd; | |
2035 | arelent *g; | |
2036 | register struct pdp11_aout_reloc_external *natptr; | |
2037 | { | |
2038 | int r_index; | |
2039 | int r_pcrel; | |
2040 | int reloc_entry; | |
2041 | int r_type; | |
2042 | asymbol *sym = *(g->sym_ptr_ptr); | |
2043 | asection *output_section = sym->section->output_section; | |
2044 | ||
2045 | if (g->addend != 0) | |
2046 | fprintf (stderr, "BFD: can't do this reloc addend stuff\n"); | |
2047 | ||
2048 | r_pcrel = g->howto->pc_relative; | |
2049 | ||
2050 | if (bfd_is_abs_section (output_section)) | |
2051 | r_type = RABS; | |
2052 | else if (output_section == obj_textsec (abfd)) | |
2053 | r_type = RTEXT; | |
2054 | else if (output_section == obj_datasec (abfd)) | |
2055 | r_type = RDATA; | |
2056 | else if (output_section == obj_bsssec (abfd)) | |
2057 | r_type = RBSS; | |
2058 | else if (bfd_is_und_section (output_section)) | |
2059 | r_type = REXT; | |
2060 | else if (bfd_is_com_section (output_section)) | |
2061 | r_type = REXT; | |
2062 | else | |
2063 | r_type = -1; | |
2064 | ||
2065 | BFD_ASSERT (r_type != -1); | |
2066 | ||
2067 | if (r_type == RABS) | |
2068 | r_index = 0; | |
2069 | else | |
2070 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
2071 | ||
2072 | #if 0 | |
2073 | if (bfd_is_abs_section (bfd_get_section (sym))) | |
2074 | { | |
2075 | r_extern = 0; | |
2076 | r_index = N_ABS; | |
2077 | r_type = RABS; | |
2078 | } | |
2079 | else if ((sym->flags & BSF_SECTION_SYM) == 0) | |
2080 | { | |
2081 | if (bfd_is_und_section (bfd_get_section (sym)) | |
2082 | || (sym->flags & BSF_GLOBAL) != 0) | |
2083 | r_extern = 1; | |
2084 | else | |
2085 | r_extern = 0; | |
2086 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
2087 | } | |
2088 | else | |
2089 | { | |
2090 | /* Just an ordinary section */ | |
2091 | r_extern = 0; | |
2092 | r_index = output_section->target_index; | |
2093 | } | |
2094 | #endif | |
2095 | ||
2096 | reloc_entry = r_index << 4 | r_type | r_pcrel; | |
2097 | ||
2098 | PUT_WORD (abfd, reloc_entry, natptr->e_reloc_entry); | |
2099 | } | |
2100 | ||
2101 | /* BFD deals internally with all things based from the section they're | |
2102 | in. so, something in 10 bytes into a text section with a base of | |
2103 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
2104 | ||
2105 | Aout keeps all it's symbols based from zero, so the symbol would | |
2106 | contain 60. This macro subs the base of each section from the value | |
2107 | to give the true offset from the section */ | |
2108 | ||
2109 | ||
2110 | #define MOVE_ADDRESS(ad) \ | |
2111 | if (r_extern) \ | |
2112 | { \ | |
2113 | /* Undefined symbol. */ \ | |
2114 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
2115 | cache_ptr->addend = ad; \ | |
2116 | } \ | |
2117 | else \ | |
2118 | { \ | |
2119 | /* Defined, section relative. replace symbol with pointer to \ | |
2120 | symbol which points to section. */ \ | |
2121 | switch (r_index) \ | |
2122 | { \ | |
2123 | case N_TEXT: \ | |
2124 | case N_TEXT | N_EXT: \ | |
2125 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ | |
2126 | cache_ptr->addend = ad - su->textsec->vma; \ | |
2127 | break; \ | |
2128 | case N_DATA: \ | |
2129 | case N_DATA | N_EXT: \ | |
2130 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ | |
2131 | cache_ptr->addend = ad - su->datasec->vma; \ | |
2132 | break; \ | |
2133 | case N_BSS: \ | |
2134 | case N_BSS | N_EXT: \ | |
2135 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ | |
2136 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
2137 | break; \ | |
2138 | default: \ | |
2139 | case N_ABS: \ | |
2140 | case N_ABS | N_EXT: \ | |
2141 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
2142 | cache_ptr->addend = ad; \ | |
2143 | break; \ | |
2144 | } \ | |
dc810e39 | 2145 | } |
e135f41b NC |
2146 | |
2147 | void | |
2148 | pdp11_aout_swap_reloc_in (abfd, bytes, cache_ptr, offset, | |
2149 | symbols, symcount) | |
2150 | bfd *abfd; | |
2151 | struct pdp11_aout_reloc_external *bytes; | |
2152 | arelent *cache_ptr; | |
2153 | bfd_size_type offset; | |
2154 | asymbol **symbols; | |
2155 | bfd_size_type symcount; | |
2156 | { | |
2157 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2158 | unsigned int r_index; | |
2159 | int reloc_entry; | |
2160 | int r_extern; | |
2161 | int r_pcrel; | |
2162 | ||
2163 | reloc_entry = GET_WORD (abfd, (PTR)bytes); | |
2164 | ||
2165 | r_pcrel = reloc_entry & RELFLG; | |
2166 | ||
2167 | cache_ptr->address = offset; | |
2168 | cache_ptr->howto = howto_table_pdp11 + (r_pcrel ? 1 : 0); | |
2169 | ||
2170 | if ((reloc_entry & RTYPE) == RABS) | |
2171 | r_index = N_ABS; | |
2172 | else | |
2173 | r_index = RINDEX (reloc_entry); | |
2174 | ||
2175 | /* r_extern reflects whether the symbol the reloc is against is | |
2176 | local or global. */ | |
2177 | r_extern = (reloc_entry & RTYPE) == REXT; | |
2178 | ||
2179 | if (r_extern && r_index > symcount) | |
2180 | { | |
2181 | /* We could arrange to return an error, but it might be useful | |
2182 | to see the file even if it is bad. */ | |
2183 | r_extern = 0; | |
2184 | r_index = N_ABS; | |
2185 | } | |
2186 | ||
2187 | MOVE_ADDRESS(0); | |
2188 | } | |
2189 | ||
2190 | /* Read and swap the relocs for a section. */ | |
2191 | ||
2192 | boolean | |
2193 | NAME(aout,slurp_reloc_table) (abfd, asect, symbols) | |
2194 | bfd *abfd; | |
2195 | sec_ptr asect; | |
2196 | asymbol **symbols; | |
2197 | { | |
2198 | struct pdp11_aout_reloc_external *rptr; | |
dc810e39 | 2199 | bfd_size_type count; |
e135f41b NC |
2200 | bfd_size_type reloc_size; |
2201 | PTR relocs; | |
2202 | arelent *reloc_cache; | |
2203 | size_t each_size; | |
2204 | unsigned int counter = 0; | |
2205 | arelent *cache_ptr; | |
2206 | ||
2207 | if (asect->relocation) | |
2208 | return true; | |
2209 | ||
2210 | if (asect->flags & SEC_CONSTRUCTOR) | |
2211 | return true; | |
2212 | ||
2213 | if (asect == obj_datasec (abfd)) | |
2214 | reloc_size = exec_hdr(abfd)->a_drsize; | |
2215 | else if (asect == obj_textsec (abfd)) | |
2216 | reloc_size = exec_hdr(abfd)->a_trsize; | |
2217 | else if (asect == obj_bsssec (abfd)) | |
2218 | reloc_size = 0; | |
2219 | else | |
2220 | { | |
2221 | bfd_set_error (bfd_error_invalid_operation); | |
2222 | return false; | |
2223 | } | |
2224 | ||
2225 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) | |
2226 | return false; | |
2227 | ||
2228 | each_size = obj_reloc_entry_size (abfd); | |
2229 | ||
dc810e39 | 2230 | relocs = bfd_malloc (reloc_size); |
e135f41b NC |
2231 | if (relocs == NULL && reloc_size != 0) |
2232 | return false; | |
2233 | ||
dc810e39 | 2234 | if (bfd_bread (relocs, reloc_size, abfd) != reloc_size) |
e135f41b NC |
2235 | { |
2236 | free (relocs); | |
2237 | return false; | |
2238 | } | |
2239 | ||
2240 | count = reloc_size / each_size; | |
2241 | ||
2242 | /* Count the number of NON-ZERO relocs, this is the count we want. */ | |
2243 | { | |
2244 | unsigned int real_count = 0; | |
2245 | ||
2246 | for (counter = 0; counter < count; counter++) | |
2247 | { | |
2248 | int x; | |
2249 | ||
973ffd63 | 2250 | x = GET_WORD (abfd, (char *) relocs + each_size * counter); |
e135f41b NC |
2251 | if (x != 0) |
2252 | real_count++; | |
2253 | } | |
2254 | ||
2255 | count = real_count; | |
2256 | } | |
2257 | ||
dc810e39 | 2258 | reloc_cache = (arelent *) bfd_malloc (count * sizeof (arelent)); |
e135f41b NC |
2259 | if (reloc_cache == NULL && count != 0) |
2260 | return false; | |
dc810e39 | 2261 | memset (reloc_cache, 0, (size_t) count * sizeof (arelent)); |
e135f41b NC |
2262 | |
2263 | cache_ptr = reloc_cache; | |
2264 | ||
2265 | rptr = (struct pdp11_aout_reloc_external *) relocs; | |
2266 | for (counter = 0; | |
2267 | counter < count; | |
2268 | counter++, ((char *)rptr) += RELOC_SIZE, cache_ptr++) | |
2269 | { | |
2270 | while (GET_WORD (abfd, (PTR)rptr) == 0) | |
2271 | { | |
2272 | rptr = | |
2273 | (struct pdp11_aout_reloc_external *) | |
dc810e39 AM |
2274 | ((char *) rptr + RELOC_SIZE); |
2275 | if ((char *) rptr >= (char *) relocs + reloc_size) | |
e135f41b NC |
2276 | goto done; |
2277 | } | |
2278 | ||
2279 | pdp11_aout_swap_reloc_in (abfd, rptr, cache_ptr, | |
dc810e39 AM |
2280 | (bfd_size_type) ((char *) rptr - (char *) relocs), |
2281 | symbols, | |
2282 | (bfd_size_type) bfd_get_symcount (abfd)); | |
e135f41b NC |
2283 | } |
2284 | done: | |
2285 | /* Just in case, if rptr >= relocs + reloc_size should happen | |
2286 | too early. */ | |
2287 | BFD_ASSERT (counter == count); | |
2288 | ||
2289 | free (relocs); | |
2290 | ||
2291 | asect->relocation = reloc_cache; | |
2292 | asect->reloc_count = cache_ptr - reloc_cache; | |
2293 | ||
2294 | return true; | |
2295 | } | |
2296 | ||
2297 | /* Write out a relocation section into an object file. */ | |
2298 | ||
2299 | boolean | |
2300 | NAME(aout,squirt_out_relocs) (abfd, section) | |
2301 | bfd *abfd; | |
2302 | asection *section; | |
2303 | { | |
2304 | arelent **generic; | |
2305 | unsigned char *native; | |
2306 | unsigned int count = section->reloc_count; | |
dc810e39 | 2307 | bfd_size_type natsize; |
e135f41b NC |
2308 | |
2309 | #if 0 | |
2310 | /* If we're writing an .o file, we must write | |
2311 | relocation information, even if there is none. */ | |
2312 | if ((count == 0 || section->orelocation == NULL) && | |
2313 | <writing_executable>) | |
2314 | return true; | |
2315 | #endif | |
2316 | ||
2317 | natsize = bfd_get_section_size_before_reloc (section); | |
2318 | native = (unsigned char *) bfd_zalloc (abfd, natsize); | |
2319 | if (!native) | |
2320 | return false; | |
2321 | ||
dc810e39 | 2322 | memset ((PTR)native, 0, (size_t) natsize); |
e135f41b NC |
2323 | |
2324 | generic = section->orelocation; | |
2325 | if (generic != NULL) | |
2326 | { | |
2327 | while (count > 0) | |
2328 | { | |
2329 | struct pdp11_aout_reloc_external *r; | |
2330 | ||
2331 | r = (struct pdp11_aout_reloc_external *) | |
2332 | (native + (*generic)->address); | |
2333 | pdp11_aout_swap_reloc_out (abfd, *generic, r); | |
2334 | count--; | |
2335 | generic++; | |
2336 | } | |
2337 | } | |
2338 | ||
dc810e39 | 2339 | if (bfd_bwrite ((PTR) native, natsize, abfd) != natsize) |
e135f41b | 2340 | { |
dc810e39 | 2341 | bfd_release (abfd, native); |
e135f41b NC |
2342 | return false; |
2343 | } | |
2344 | ||
2345 | bfd_release (abfd, native); | |
e135f41b NC |
2346 | return true; |
2347 | } | |
2348 | ||
2349 | /* This is stupid. This function should be a boolean predicate */ | |
2350 | long | |
2351 | NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols) | |
2352 | bfd *abfd; | |
2353 | sec_ptr section; | |
2354 | arelent **relptr; | |
2355 | asymbol **symbols; | |
2356 | { | |
2357 | arelent *tblptr = section->relocation; | |
2358 | unsigned int count; | |
2359 | ||
2360 | if (section == obj_bsssec (abfd)) | |
2361 | { | |
2362 | *relptr = NULL; | |
2363 | return 0; | |
2364 | } | |
2365 | ||
2366 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) | |
2367 | return -1; | |
2368 | ||
2369 | if (section->flags & SEC_CONSTRUCTOR) | |
2370 | { | |
2371 | arelent_chain *chain = section->constructor_chain; | |
2372 | ||
2373 | for (count = 0; count < section->reloc_count; count ++) | |
2374 | { | |
2375 | *relptr ++ = &chain->relent; | |
2376 | chain = chain->next; | |
2377 | } | |
2378 | } | |
2379 | else | |
2380 | { | |
2381 | tblptr = section->relocation; | |
2382 | ||
2383 | for (count = 0; count++ < section->reloc_count;) | |
2384 | *relptr++ = tblptr++; | |
2385 | } | |
2386 | ||
2387 | *relptr = 0; | |
2388 | ||
2389 | return section->reloc_count; | |
2390 | } | |
2391 | ||
2392 | long | |
2393 | NAME(aout,get_reloc_upper_bound) (abfd, asect) | |
2394 | bfd *abfd; | |
2395 | sec_ptr asect; | |
2396 | { | |
2397 | if (bfd_get_format (abfd) != bfd_object) | |
2398 | { | |
2399 | bfd_set_error (bfd_error_invalid_operation); | |
2400 | return -1; | |
2401 | } | |
2402 | ||
dc810e39 | 2403 | if (asect->flags & SEC_CONSTRUCTOR) |
e135f41b NC |
2404 | return (sizeof (arelent *) * (asect->reloc_count+1)); |
2405 | ||
2406 | if (asect == obj_datasec (abfd)) | |
2407 | return (sizeof (arelent *) | |
2408 | * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
2409 | + 1)); | |
2410 | ||
2411 | if (asect == obj_textsec (abfd)) | |
2412 | return (sizeof (arelent *) | |
2413 | * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
2414 | + 1)); | |
2415 | ||
2416 | /* TODO: why are there two if statements for obj_bsssec()? */ | |
2417 | ||
2418 | if (asect == obj_bsssec (abfd)) | |
2419 | return sizeof (arelent *); | |
2420 | ||
2421 | if (asect == obj_bsssec (abfd)) | |
2422 | return 0; | |
2423 | ||
2424 | bfd_set_error (bfd_error_invalid_operation); | |
2425 | return -1; | |
2426 | } | |
2427 | ||
2428 | \f | |
2429 | long | |
2430 | NAME(aout,get_symtab_upper_bound) (abfd) | |
2431 | bfd *abfd; | |
2432 | { | |
2433 | if (!NAME(aout,slurp_symbol_table)(abfd)) | |
2434 | return -1; | |
2435 | ||
2436 | return (bfd_get_symcount (abfd) + 1) * (sizeof (aout_symbol_type *)); | |
2437 | } | |
2438 | ||
2439 | alent * | |
2440 | NAME(aout,get_lineno) (abfd, symbol) | |
2441 | bfd * abfd ATTRIBUTE_UNUSED; | |
2442 | asymbol * symbol ATTRIBUTE_UNUSED; | |
2443 | { | |
2444 | return (alent *)NULL; | |
2445 | } | |
2446 | ||
2447 | void | |
2448 | NAME(aout,get_symbol_info) (abfd, symbol, ret) | |
2449 | bfd * abfd ATTRIBUTE_UNUSED; | |
2450 | asymbol *symbol; | |
2451 | symbol_info *ret; | |
2452 | { | |
2453 | bfd_symbol_info (symbol, ret); | |
2454 | ||
2455 | if (ret->type == '?') | |
2456 | { | |
2457 | int type_code = aout_symbol(symbol)->type & 0xff; | |
2458 | const char *stab_name = bfd_get_stab_name (type_code); | |
2459 | static char buf[10]; | |
2460 | ||
2461 | if (stab_name == NULL) | |
2462 | { | |
2463 | sprintf(buf, "(%d)", type_code); | |
2464 | stab_name = buf; | |
2465 | } | |
2466 | ret->type = '-'; | |
2467 | ret->stab_type = type_code; | |
2468 | ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff); | |
2469 | ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff); | |
2470 | ret->stab_name = stab_name; | |
2471 | } | |
2472 | } | |
2473 | ||
2474 | /*ARGSUSED*/ | |
2475 | void | |
2476 | NAME(aout,print_symbol) (abfd, afile, symbol, how) | |
60b89a18 | 2477 | bfd * abfd; |
e135f41b NC |
2478 | PTR afile; |
2479 | asymbol *symbol; | |
2480 | bfd_print_symbol_type how; | |
2481 | { | |
2482 | FILE *file = (FILE *)afile; | |
2483 | ||
2484 | switch (how) | |
2485 | { | |
2486 | case bfd_print_symbol_name: | |
2487 | if (symbol->name) | |
2488 | fprintf(file,"%s", symbol->name); | |
2489 | break; | |
2490 | case bfd_print_symbol_more: | |
2491 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
2492 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
2493 | (unsigned)(aout_symbol(symbol)->type)); | |
2494 | break; | |
2495 | case bfd_print_symbol_all: | |
2496 | { | |
dc810e39 | 2497 | const char *section_name = symbol->section->name; |
e135f41b | 2498 | |
60b89a18 | 2499 | bfd_print_symbol_vandf (abfd, (PTR)file, symbol); |
e135f41b NC |
2500 | |
2501 | fprintf (file," %-5s %04x %02x %02x", | |
2502 | section_name, | |
2503 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
2504 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
2505 | (unsigned)(aout_symbol(symbol)->type & 0xff)); | |
2506 | if (symbol->name) | |
2507 | fprintf(file," %s", symbol->name); | |
2508 | } | |
2509 | break; | |
2510 | } | |
2511 | } | |
2512 | ||
2513 | /* If we don't have to allocate more than 1MB to hold the generic | |
2514 | symbols, we use the generic minisymbol method: it's faster, since | |
2515 | it only translates the symbols once, not multiple times. */ | |
2516 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2517 | ||
2518 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2519 | symbols. The minisymbol_to_symbol function translates these into | |
2520 | BFD asymbol structures. */ | |
2521 | ||
2522 | long | |
2523 | NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep) | |
2524 | bfd *abfd; | |
2525 | boolean dynamic; | |
2526 | PTR *minisymsp; | |
2527 | unsigned int *sizep; | |
2528 | { | |
2529 | if (dynamic) | |
2530 | { | |
2531 | /* We could handle the dynamic symbols here as well, but it's | |
2532 | easier to hand them off. */ | |
2533 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2534 | } | |
2535 | ||
2536 | if (! aout_get_external_symbols (abfd)) | |
2537 | return -1; | |
2538 | ||
2539 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2540 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2541 | ||
2542 | *minisymsp = (PTR) obj_aout_external_syms (abfd); | |
2543 | ||
2544 | /* By passing the external symbols back from this routine, we are | |
2545 | giving up control over the memory block. Clear | |
2546 | obj_aout_external_syms, so that we do not try to free it | |
2547 | ourselves. */ | |
2548 | obj_aout_external_syms (abfd) = NULL; | |
2549 | ||
2550 | *sizep = EXTERNAL_NLIST_SIZE; | |
2551 | return obj_aout_external_sym_count (abfd); | |
2552 | } | |
2553 | ||
2554 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2555 | unmodified a.out symbol. The SYM argument is a structure returned | |
2556 | by bfd_make_empty_symbol, which we fill in here. */ | |
2557 | ||
2558 | asymbol * | |
2559 | NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym) | |
2560 | bfd *abfd; | |
2561 | boolean dynamic; | |
2562 | const PTR minisym; | |
2563 | asymbol *sym; | |
2564 | { | |
2565 | if (dynamic | |
2566 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2567 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2568 | ||
2569 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2570 | ||
2571 | /* We call translate_symbol_table to translate a single symbol. */ | |
2572 | if (! (NAME(aout,translate_symbol_table) | |
2573 | (abfd, | |
2574 | (aout_symbol_type *) sym, | |
2575 | (struct external_nlist *) minisym, | |
2576 | (bfd_size_type) 1, | |
2577 | obj_aout_external_strings (abfd), | |
2578 | obj_aout_external_string_size (abfd), | |
2579 | false))) | |
2580 | return NULL; | |
2581 | ||
2582 | return sym; | |
2583 | } | |
2584 | ||
2585 | /* | |
2586 | provided a BFD, a section and an offset into the section, calculate | |
2587 | and return the name of the source file and the line nearest to the | |
2588 | wanted location. | |
2589 | */ | |
2590 | ||
2591 | boolean | |
2592 | NAME(aout,find_nearest_line) | |
2593 | (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr) | |
2594 | bfd *abfd; | |
2595 | asection *section; | |
2596 | asymbol **symbols; | |
2597 | bfd_vma offset; | |
dc810e39 AM |
2598 | const char **filename_ptr; |
2599 | const char **functionname_ptr; | |
e135f41b NC |
2600 | unsigned int *line_ptr; |
2601 | { | |
2602 | /* Run down the file looking for the filename, function and linenumber */ | |
2603 | asymbol **p; | |
dc810e39 AM |
2604 | const char *directory_name = NULL; |
2605 | const char *main_file_name = NULL; | |
2606 | const char *current_file_name = NULL; | |
2607 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ | |
e135f41b NC |
2608 | bfd_vma low_line_vma = 0; |
2609 | bfd_vma low_func_vma = 0; | |
2610 | asymbol *func = 0; | |
2611 | size_t filelen, funclen; | |
2612 | char *buf; | |
2613 | ||
2614 | *filename_ptr = abfd->filename; | |
2615 | *functionname_ptr = 0; | |
2616 | *line_ptr = 0; | |
2617 | ||
2618 | if (symbols != (asymbol **)NULL) | |
2619 | { | |
2620 | for (p = symbols; *p; p++) | |
2621 | { | |
2622 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
2623 | next: | |
2624 | switch (q->type) | |
2625 | { | |
2626 | case N_TEXT: | |
2627 | /* If this looks like a file name symbol, and it comes after | |
2628 | the line number we have found so far, but before the | |
2629 | offset, then we have probably not found the right line | |
2630 | number. */ | |
2631 | if (q->symbol.value <= offset | |
2632 | && ((q->symbol.value > low_line_vma | |
2633 | && (line_file_name != NULL | |
2634 | || *line_ptr != 0)) | |
2635 | || (q->symbol.value > low_func_vma | |
2636 | && func != NULL))) | |
2637 | { | |
2638 | const char * symname; | |
2639 | ||
2640 | symname = q->symbol.name; | |
2641 | if (strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
2642 | { | |
2643 | if (q->symbol.value > low_line_vma) | |
2644 | { | |
2645 | *line_ptr = 0; | |
2646 | line_file_name = NULL; | |
2647 | } | |
2648 | if (q->symbol.value > low_func_vma) | |
2649 | func = NULL; | |
2650 | } | |
2651 | } | |
2652 | break; | |
2653 | ||
2654 | case N_SO: | |
2655 | /* If this symbol is less than the offset, but greater than | |
2656 | the line number we have found so far, then we have not | |
2657 | found the right line number. */ | |
2658 | if (q->symbol.value <= offset) | |
2659 | { | |
2660 | if (q->symbol.value > low_line_vma) | |
2661 | { | |
2662 | *line_ptr = 0; | |
2663 | line_file_name = NULL; | |
2664 | } | |
2665 | if (q->symbol.value > low_func_vma) | |
2666 | func = NULL; | |
2667 | } | |
2668 | ||
2669 | main_file_name = current_file_name = q->symbol.name; | |
2670 | /* Look ahead to next symbol to check if that too is an N_SO. */ | |
2671 | p++; | |
2672 | if (*p == NULL) | |
2673 | break; | |
2674 | q = (aout_symbol_type *)(*p); | |
2675 | if (q->type != (int)N_SO) | |
2676 | goto next; | |
2677 | ||
2678 | /* Found a second N_SO First is directory; second is filename. */ | |
2679 | directory_name = current_file_name; | |
2680 | main_file_name = current_file_name = q->symbol.name; | |
2681 | if (obj_textsec(abfd) != section) | |
2682 | goto done; | |
2683 | break; | |
2684 | case N_SOL: | |
2685 | current_file_name = q->symbol.name; | |
2686 | break; | |
2687 | ||
2688 | case N_SLINE: | |
2689 | case N_DSLINE: | |
2690 | case N_BSLINE: | |
2691 | /* We'll keep this if it resolves nearer than the one we have | |
2692 | already. */ | |
2693 | if (q->symbol.value >= low_line_vma | |
2694 | && q->symbol.value <= offset) | |
2695 | { | |
2696 | *line_ptr = q->desc; | |
2697 | low_line_vma = q->symbol.value; | |
2698 | line_file_name = current_file_name; | |
2699 | } | |
2700 | break; | |
2701 | ||
2702 | case N_FUN: | |
2703 | { | |
2704 | /* We'll keep this if it is nearer than the one we have already */ | |
2705 | if (q->symbol.value >= low_func_vma && | |
2706 | q->symbol.value <= offset) | |
2707 | { | |
2708 | low_func_vma = q->symbol.value; | |
2709 | func = (asymbol *)q; | |
2710 | } | |
2711 | else if (q->symbol.value > offset) | |
2712 | goto done; | |
2713 | } | |
2714 | break; | |
2715 | } | |
2716 | } | |
2717 | } | |
2718 | ||
2719 | done: | |
2720 | if (*line_ptr != 0) | |
2721 | main_file_name = line_file_name; | |
2722 | ||
2723 | if (main_file_name == NULL | |
2724 | || main_file_name[0] == '/' | |
2725 | || directory_name == NULL) | |
2726 | filelen = 0; | |
2727 | else | |
2728 | filelen = strlen (directory_name) + strlen (main_file_name); | |
2729 | if (func == NULL) | |
2730 | funclen = 0; | |
2731 | else | |
2732 | funclen = strlen (bfd_asymbol_name (func)); | |
2733 | ||
2734 | if (adata (abfd).line_buf != NULL) | |
2735 | free (adata (abfd).line_buf); | |
2736 | if (filelen + funclen == 0) | |
2737 | adata (abfd).line_buf = buf = NULL; | |
2738 | else | |
2739 | { | |
dc810e39 | 2740 | buf = (char *) bfd_malloc ((bfd_size_type) filelen + funclen + 3); |
e135f41b NC |
2741 | adata (abfd).line_buf = buf; |
2742 | if (buf == NULL) | |
2743 | return false; | |
2744 | } | |
2745 | ||
2746 | if (main_file_name != NULL) | |
2747 | { | |
2748 | if (main_file_name[0] == '/' || directory_name == NULL) | |
2749 | *filename_ptr = main_file_name; | |
2750 | else | |
2751 | { | |
2752 | sprintf (buf, "%s%s", directory_name, main_file_name); | |
2753 | *filename_ptr = buf; | |
2754 | buf += filelen + 1; | |
2755 | } | |
2756 | } | |
2757 | ||
2758 | if (func) | |
2759 | { | |
2760 | const char *function = func->name; | |
dc810e39 | 2761 | char *colon; |
e135f41b NC |
2762 | |
2763 | /* The caller expects a symbol name. We actually have a | |
2764 | function name, without the leading underscore. Put the | |
2765 | underscore back in, so that the caller gets a symbol name. */ | |
2766 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2767 | strcpy (buf, function); | |
2768 | else | |
2769 | { | |
2770 | buf[0] = bfd_get_symbol_leading_char (abfd); | |
2771 | strcpy (buf + 1, function); | |
2772 | } | |
2773 | ||
2774 | /* Have to remove : stuff. */ | |
dc810e39 AM |
2775 | colon = strchr (buf, ':'); |
2776 | if (colon != NULL) | |
2777 | *colon = '\0'; | |
e135f41b NC |
2778 | *functionname_ptr = buf; |
2779 | } | |
2780 | ||
2781 | return true; | |
2782 | } | |
2783 | ||
2784 | int | |
2785 | NAME(aout,sizeof_headers) (abfd, execable) | |
2786 | bfd *abfd; | |
2787 | boolean execable ATTRIBUTE_UNUSED; | |
2788 | { | |
2789 | return adata(abfd).exec_bytes_size; | |
2790 | } | |
2791 | ||
2792 | /* Free all information we have cached for this BFD. We can always | |
2793 | read it again later if we need it. */ | |
2794 | ||
2795 | boolean | |
2796 | NAME(aout,bfd_free_cached_info) (abfd) | |
2797 | bfd *abfd; | |
2798 | { | |
2799 | asection *o; | |
2800 | ||
2801 | if (bfd_get_format (abfd) != bfd_object) | |
2802 | return true; | |
2803 | ||
2804 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } | |
2805 | BFCI_FREE (obj_aout_symbols (abfd)); | |
2806 | #ifdef USE_MMAP | |
2807 | obj_aout_external_syms (abfd) = 0; | |
2808 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2809 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2810 | obj_aout_external_strings (abfd) = 0; | |
2811 | #else | |
2812 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2813 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2814 | #endif | |
2815 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
2816 | BFCI_FREE (o->relocation); | |
2817 | #undef BFCI_FREE | |
2818 | ||
2819 | return true; | |
2820 | } | |
2821 | \f | |
2822 | /* a.out link code. */ | |
2823 | ||
2824 | static boolean aout_link_add_object_symbols | |
2825 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2826 | static boolean aout_link_check_archive_element | |
2827 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
2828 | static boolean aout_link_free_symbols PARAMS ((bfd *)); | |
2829 | static boolean aout_link_check_ar_symbols | |
2830 | PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded)); | |
2831 | static boolean aout_link_add_symbols | |
2832 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2833 | ||
2834 | /* Routine to create an entry in an a.out link hash table. */ | |
2835 | ||
2836 | struct bfd_hash_entry * | |
2837 | NAME(aout,link_hash_newfunc) (entry, table, string) | |
2838 | struct bfd_hash_entry *entry; | |
2839 | struct bfd_hash_table *table; | |
2840 | const char *string; | |
2841 | { | |
2842 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2843 | ||
2844 | /* Allocate the structure if it has not already been allocated by a | |
2845 | subclass. */ | |
2846 | if (ret == (struct aout_link_hash_entry *) NULL) | |
2847 | ret = ((struct aout_link_hash_entry *) | |
2848 | bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry))); | |
2849 | if (ret == (struct aout_link_hash_entry *) NULL) | |
2850 | return (struct bfd_hash_entry *) ret; | |
2851 | ||
2852 | /* Call the allocation method of the superclass. */ | |
2853 | ret = ((struct aout_link_hash_entry *) | |
2854 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2855 | table, string)); | |
2856 | if (ret) | |
2857 | { | |
2858 | /* Set local fields. */ | |
2859 | ret->written = false; | |
2860 | ret->indx = -1; | |
2861 | } | |
2862 | ||
2863 | return (struct bfd_hash_entry *) ret; | |
2864 | } | |
2865 | ||
2866 | /* Initialize an a.out link hash table. */ | |
2867 | ||
2868 | boolean | |
2869 | NAME(aout,link_hash_table_init) (table, abfd, newfunc) | |
2870 | struct aout_link_hash_table *table; | |
2871 | bfd *abfd; | |
2872 | struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, | |
2873 | struct bfd_hash_table *, | |
2874 | const char *)); | |
2875 | { | |
2876 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
2877 | } | |
2878 | ||
2879 | /* Create an a.out link hash table. */ | |
2880 | ||
2881 | struct bfd_link_hash_table * | |
2882 | NAME(aout,link_hash_table_create) (abfd) | |
2883 | bfd *abfd; | |
2884 | { | |
2885 | struct aout_link_hash_table *ret; | |
dc810e39 | 2886 | bfd_size_type amt = sizeof (struct aout_link_hash_table); |
e135f41b | 2887 | |
dc810e39 | 2888 | ret = ((struct aout_link_hash_table *) bfd_alloc (abfd, amt)); |
e135f41b NC |
2889 | if (ret == NULL) |
2890 | return (struct bfd_link_hash_table *) NULL; | |
2891 | if (! NAME(aout,link_hash_table_init) (ret, abfd, | |
2892 | NAME(aout,link_hash_newfunc))) | |
2893 | { | |
2894 | free (ret); | |
2895 | return (struct bfd_link_hash_table *) NULL; | |
2896 | } | |
2897 | return &ret->root; | |
2898 | } | |
2899 | ||
2900 | /* Given an a.out BFD, add symbols to the global hash table as | |
2901 | appropriate. */ | |
2902 | ||
2903 | boolean | |
2904 | NAME(aout,link_add_symbols) (abfd, info) | |
2905 | bfd *abfd; | |
2906 | struct bfd_link_info *info; | |
2907 | { | |
2908 | switch (bfd_get_format (abfd)) | |
2909 | { | |
2910 | case bfd_object: | |
2911 | return aout_link_add_object_symbols (abfd, info); | |
2912 | case bfd_archive: | |
2913 | return _bfd_generic_link_add_archive_symbols | |
2914 | (abfd, info, aout_link_check_archive_element); | |
2915 | default: | |
2916 | bfd_set_error (bfd_error_wrong_format); | |
2917 | return false; | |
2918 | } | |
2919 | } | |
2920 | ||
2921 | /* Add symbols from an a.out object file. */ | |
2922 | ||
2923 | static boolean | |
2924 | aout_link_add_object_symbols (abfd, info) | |
2925 | bfd *abfd; | |
2926 | struct bfd_link_info *info; | |
2927 | { | |
2928 | if (! aout_get_external_symbols (abfd)) | |
2929 | return false; | |
2930 | if (! aout_link_add_symbols (abfd, info)) | |
2931 | return false; | |
2932 | if (! info->keep_memory) | |
2933 | { | |
2934 | if (! aout_link_free_symbols (abfd)) | |
2935 | return false; | |
2936 | } | |
2937 | return true; | |
2938 | } | |
2939 | ||
2940 | /* Check a single archive element to see if we need to include it in | |
2941 | the link. *PNEEDED is set according to whether this element is | |
2942 | needed in the link or not. This is called from | |
2943 | _bfd_generic_link_add_archive_symbols. */ | |
2944 | ||
2945 | static boolean | |
2946 | aout_link_check_archive_element (abfd, info, pneeded) | |
2947 | bfd *abfd; | |
2948 | struct bfd_link_info *info; | |
2949 | boolean *pneeded; | |
2950 | { | |
2951 | if (! aout_get_external_symbols (abfd)) | |
2952 | return false; | |
2953 | ||
2954 | if (! aout_link_check_ar_symbols (abfd, info, pneeded)) | |
2955 | return false; | |
2956 | ||
2957 | if (*pneeded) | |
2958 | { | |
2959 | if (! aout_link_add_symbols (abfd, info)) | |
2960 | return false; | |
2961 | } | |
2962 | ||
2963 | if (! info->keep_memory || ! *pneeded) | |
2964 | { | |
2965 | if (! aout_link_free_symbols (abfd)) | |
2966 | return false; | |
2967 | } | |
2968 | ||
2969 | return true; | |
2970 | } | |
2971 | ||
2972 | /* Free up the internal symbols read from an a.out file. */ | |
2973 | ||
2974 | static boolean | |
2975 | aout_link_free_symbols (abfd) | |
2976 | bfd *abfd; | |
2977 | { | |
2978 | if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
2979 | { | |
2980 | #ifdef USE_MMAP | |
2981 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2982 | #else | |
2983 | free ((PTR) obj_aout_external_syms (abfd)); | |
2984 | #endif | |
2985 | obj_aout_external_syms (abfd) = (struct external_nlist *) NULL; | |
2986 | } | |
2987 | if (obj_aout_external_strings (abfd) != (char *) NULL) | |
2988 | { | |
2989 | #ifdef USE_MMAP | |
2990 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2991 | #else | |
2992 | free ((PTR) obj_aout_external_strings (abfd)); | |
2993 | #endif | |
2994 | obj_aout_external_strings (abfd) = (char *) NULL; | |
2995 | } | |
2996 | return true; | |
2997 | } | |
2998 | ||
2999 | /* Look through the internal symbols to see if this object file should | |
3000 | be included in the link. We should include this object file if it | |
3001 | defines any symbols which are currently undefined. If this object | |
3002 | file defines a common symbol, then we may adjust the size of the | |
3003 | known symbol but we do not include the object file in the link | |
3004 | (unless there is some other reason to include it). */ | |
3005 | ||
3006 | static boolean | |
3007 | aout_link_check_ar_symbols (abfd, info, pneeded) | |
3008 | bfd *abfd; | |
3009 | struct bfd_link_info *info; | |
3010 | boolean *pneeded; | |
3011 | { | |
3012 | register struct external_nlist *p; | |
3013 | struct external_nlist *pend; | |
3014 | char *strings; | |
3015 | ||
3016 | *pneeded = false; | |
3017 | ||
3018 | /* Look through all the symbols. */ | |
3019 | p = obj_aout_external_syms (abfd); | |
3020 | pend = p + obj_aout_external_sym_count (abfd); | |
3021 | strings = obj_aout_external_strings (abfd); | |
3022 | for (; p < pend; p++) | |
3023 | { | |
dc810e39 | 3024 | int type = H_GET_8 (abfd, p->e_type); |
e135f41b NC |
3025 | const char *name; |
3026 | struct bfd_link_hash_entry *h; | |
3027 | ||
3028 | /* Ignore symbols that are not externally visible. This is an | |
3029 | optimization only, as we check the type more thoroughly | |
3030 | below. */ | |
3031 | if ((type & N_EXT) == 0 | |
3032 | || type == N_FN) | |
3033 | continue; | |
3034 | ||
3035 | name = strings + GET_WORD (abfd, p->e_strx); | |
3036 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); | |
3037 | ||
3038 | /* We are only interested in symbols that are currently | |
3039 | undefined or common. */ | |
3040 | if (h == (struct bfd_link_hash_entry *) NULL | |
3041 | || (h->type != bfd_link_hash_undefined | |
3042 | && h->type != bfd_link_hash_common)) | |
3043 | continue; | |
3044 | ||
3045 | if (type == (N_TEXT | N_EXT) | |
3046 | || type == (N_DATA | N_EXT) | |
3047 | || type == (N_BSS | N_EXT) | |
3048 | || type == (N_ABS | N_EXT)) | |
3049 | { | |
3050 | /* This object file defines this symbol. We must link it | |
3051 | in. This is true regardless of whether the current | |
3052 | definition of the symbol is undefined or common. If the | |
3053 | current definition is common, we have a case in which we | |
3054 | have already seen an object file including | |
3055 | int a; | |
3056 | and this object file from the archive includes | |
3057 | int a = 5; | |
3058 | In such a case we must include this object file. | |
3059 | ||
3060 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
3061 | element if the symbol is defined in the .data section, | |
3062 | but not if it is defined in the .text section. That | |
3063 | seems a bit crazy to me, and I haven't implemented it. | |
3064 | However, it might be correct. */ | |
3065 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
3066 | return false; | |
3067 | *pneeded = true; | |
3068 | return true; | |
3069 | } | |
3070 | ||
3071 | if (type == (N_UNDF | N_EXT)) | |
3072 | { | |
3073 | bfd_vma value; | |
3074 | ||
3075 | value = GET_WORD (abfd, p->e_value); | |
3076 | if (value != 0) | |
3077 | { | |
3078 | /* This symbol is common in the object from the archive | |
3079 | file. */ | |
3080 | if (h->type == bfd_link_hash_undefined) | |
3081 | { | |
3082 | bfd *symbfd; | |
3083 | unsigned int power; | |
3084 | ||
3085 | symbfd = h->u.undef.abfd; | |
3086 | if (symbfd == (bfd *) NULL) | |
3087 | { | |
3088 | /* This symbol was created as undefined from | |
3089 | outside BFD. We assume that we should link | |
3090 | in the object file. This is done for the -u | |
3091 | option in the linker. */ | |
3092 | if (! (*info->callbacks->add_archive_element) (info, | |
3093 | abfd, | |
3094 | name)) | |
3095 | return false; | |
3096 | *pneeded = true; | |
3097 | return true; | |
3098 | } | |
3099 | /* Turn the current link symbol into a common | |
3100 | symbol. It is already on the undefs list. */ | |
3101 | h->type = bfd_link_hash_common; | |
3102 | h->u.c.p = ((struct bfd_link_hash_common_entry *) | |
3103 | bfd_hash_allocate (&info->hash->table, | |
3104 | sizeof (struct bfd_link_hash_common_entry))); | |
3105 | if (h->u.c.p == NULL) | |
3106 | return false; | |
3107 | ||
3108 | h->u.c.size = value; | |
3109 | ||
3110 | /* FIXME: This isn't quite right. The maximum | |
3111 | alignment of a common symbol should be set by the | |
3112 | architecture of the output file, not of the input | |
3113 | file. */ | |
3114 | power = bfd_log2 (value); | |
3115 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
3116 | power = bfd_get_arch_info (abfd)->section_align_power; | |
3117 | h->u.c.p->alignment_power = power; | |
3118 | ||
3119 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
3120 | "COMMON"); | |
3121 | } | |
3122 | else | |
3123 | { | |
3124 | /* Adjust the size of the common symbol if | |
3125 | necessary. */ | |
3126 | if (value > h->u.c.size) | |
3127 | h->u.c.size = value; | |
3128 | } | |
3129 | } | |
3130 | } | |
3131 | } | |
3132 | ||
3133 | /* We do not need this object file. */ | |
3134 | return true; | |
3135 | } | |
3136 | ||
3137 | /* Add all symbols from an object file to the hash table. */ | |
3138 | ||
3139 | static boolean | |
3140 | aout_link_add_symbols (abfd, info) | |
3141 | bfd *abfd; | |
3142 | struct bfd_link_info *info; | |
3143 | { | |
3144 | boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *, | |
3145 | const char *, flagword, asection *, | |
3146 | bfd_vma, const char *, boolean, | |
3147 | boolean, | |
3148 | struct bfd_link_hash_entry **)); | |
3149 | struct external_nlist *syms; | |
3150 | bfd_size_type sym_count; | |
3151 | char *strings; | |
3152 | boolean copy; | |
3153 | struct aout_link_hash_entry **sym_hash; | |
3154 | register struct external_nlist *p; | |
3155 | struct external_nlist *pend; | |
3156 | ||
3157 | syms = obj_aout_external_syms (abfd); | |
3158 | sym_count = obj_aout_external_sym_count (abfd); | |
3159 | strings = obj_aout_external_strings (abfd); | |
3160 | if (info->keep_memory) | |
3161 | copy = false; | |
3162 | else | |
3163 | copy = true; | |
3164 | ||
3165 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) | |
3166 | { | |
3167 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) | |
3168 | (abfd, info, &syms, &sym_count, &strings))) | |
3169 | return false; | |
3170 | } | |
3171 | ||
3172 | /* We keep a list of the linker hash table entries that correspond | |
3173 | to particular symbols. We could just look them up in the hash | |
3174 | table, but keeping the list is more efficient. Perhaps this | |
3175 | should be conditional on info->keep_memory. */ | |
3176 | sym_hash = ((struct aout_link_hash_entry **) | |
3177 | bfd_alloc (abfd, | |
dc810e39 | 3178 | sym_count * sizeof (struct aout_link_hash_entry *))); |
e135f41b NC |
3179 | if (sym_hash == NULL && sym_count != 0) |
3180 | return false; | |
3181 | obj_aout_sym_hashes (abfd) = sym_hash; | |
3182 | ||
3183 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; | |
3184 | if (add_one_symbol == NULL) | |
3185 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
3186 | ||
3187 | p = syms; | |
3188 | pend = p + sym_count; | |
3189 | for (; p < pend; p++, sym_hash++) | |
3190 | { | |
3191 | int type; | |
3192 | const char *name; | |
3193 | bfd_vma value; | |
3194 | asection *section; | |
3195 | flagword flags; | |
3196 | const char *string; | |
3197 | ||
3198 | *sym_hash = NULL; | |
3199 | ||
dc810e39 | 3200 | type = H_GET_8 (abfd, p->e_type); |
e135f41b NC |
3201 | |
3202 | #if 0 /* not supported in PDP-11 a.out */ | |
3203 | /* Ignore debugging symbols. */ | |
3204 | if ((type & N_STAB) != 0) | |
3205 | continue; | |
3206 | #endif | |
3207 | ||
3208 | name = strings + GET_WORD (abfd, p->e_strx); | |
3209 | value = GET_WORD (abfd, p->e_value); | |
3210 | flags = BSF_GLOBAL; | |
3211 | string = NULL; | |
3212 | switch (type) | |
3213 | { | |
3214 | default: | |
3215 | abort (); | |
3216 | ||
3217 | case N_UNDF: | |
3218 | case N_ABS: | |
3219 | case N_TEXT: | |
3220 | case N_DATA: | |
3221 | case N_BSS: | |
3222 | case N_REG: | |
3223 | case N_FN: | |
3224 | /* Ignore symbols that are not externally visible. */ | |
3225 | continue; | |
3226 | ||
3227 | case N_UNDF | N_EXT: | |
3228 | if (value == 0) | |
3229 | { | |
3230 | section = bfd_und_section_ptr; | |
3231 | flags = 0; | |
3232 | } | |
3233 | else | |
3234 | section = bfd_com_section_ptr; | |
3235 | break; | |
3236 | case N_ABS | N_EXT: | |
3237 | section = bfd_abs_section_ptr; | |
3238 | break; | |
3239 | case N_TEXT | N_EXT: | |
3240 | section = obj_textsec (abfd); | |
3241 | value -= bfd_get_section_vma (abfd, section); | |
3242 | break; | |
3243 | case N_DATA | N_EXT: | |
3244 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3245 | translate_from_native_sym_flags. */ | |
3246 | section = obj_datasec (abfd); | |
3247 | value -= bfd_get_section_vma (abfd, section); | |
3248 | break; | |
3249 | case N_BSS | N_EXT: | |
3250 | section = obj_bsssec (abfd); | |
3251 | value -= bfd_get_section_vma (abfd, section); | |
3252 | break; | |
3253 | } | |
3254 | ||
3255 | if (! ((*add_one_symbol) | |
3256 | (info, abfd, name, flags, section, value, string, copy, false, | |
3257 | (struct bfd_link_hash_entry **) sym_hash))) | |
3258 | return false; | |
3259 | ||
3260 | /* Restrict the maximum alignment of a common symbol based on | |
3261 | the architecture, since a.out has no way to represent | |
3262 | alignment requirements of a section in a .o file. FIXME: | |
3263 | This isn't quite right: it should use the architecture of the | |
3264 | output file, not the input files. */ | |
3265 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
3266 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
3267 | bfd_get_arch_info (abfd)->section_align_power)) | |
3268 | (*sym_hash)->root.u.c.p->alignment_power = | |
3269 | bfd_get_arch_info (abfd)->section_align_power; | |
3270 | ||
3271 | /* If this is a set symbol, and we are not building sets, then | |
3272 | it is possible for the hash entry to not have been set. In | |
3273 | such a case, treat the symbol as not globally defined. */ | |
3274 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3275 | { | |
3276 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3277 | *sym_hash = NULL; | |
3278 | } | |
3279 | } | |
3280 | ||
3281 | return true; | |
3282 | } | |
3283 | \f | |
3284 | /* A hash table used for header files with N_BINCL entries. */ | |
3285 | ||
3286 | struct aout_link_includes_table | |
3287 | { | |
3288 | struct bfd_hash_table root; | |
3289 | }; | |
3290 | ||
3291 | /* A linked list of totals that we have found for a particular header | |
3292 | file. */ | |
3293 | ||
3294 | struct aout_link_includes_totals | |
3295 | { | |
3296 | struct aout_link_includes_totals *next; | |
3297 | bfd_vma total; | |
3298 | }; | |
3299 | ||
3300 | /* An entry in the header file hash table. */ | |
3301 | ||
3302 | struct aout_link_includes_entry | |
3303 | { | |
3304 | struct bfd_hash_entry root; | |
3305 | /* List of totals we have found for this file. */ | |
3306 | struct aout_link_includes_totals *totals; | |
3307 | }; | |
3308 | ||
3309 | /* Look up an entry in an the header file hash table. */ | |
3310 | ||
3311 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
3312 | ((struct aout_link_includes_entry *) \ | |
3313 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
3314 | ||
3315 | /* During the final link step we need to pass around a bunch of | |
3316 | information, so we do it in an instance of this structure. */ | |
3317 | ||
3318 | struct aout_final_link_info | |
3319 | { | |
3320 | /* General link information. */ | |
3321 | struct bfd_link_info *info; | |
3322 | /* Output bfd. */ | |
3323 | bfd *output_bfd; | |
3324 | /* Reloc file positions. */ | |
3325 | file_ptr treloff, dreloff; | |
3326 | /* File position of symbols. */ | |
3327 | file_ptr symoff; | |
3328 | /* String table. */ | |
3329 | struct bfd_strtab_hash *strtab; | |
3330 | /* Header file hash table. */ | |
3331 | struct aout_link_includes_table includes; | |
3332 | /* A buffer large enough to hold the contents of any section. */ | |
3333 | bfd_byte *contents; | |
3334 | /* A buffer large enough to hold the relocs of any section. */ | |
3335 | PTR relocs; | |
3336 | /* A buffer large enough to hold the symbol map of any input BFD. */ | |
3337 | int *symbol_map; | |
3338 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3339 | struct external_nlist *output_syms; | |
3340 | }; | |
3341 | ||
3342 | static struct bfd_hash_entry *aout_link_includes_newfunc | |
3343 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
3344 | static boolean aout_link_input_bfd | |
3345 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); | |
3346 | static boolean aout_link_write_symbols | |
3347 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); | |
3348 | static boolean aout_link_write_other_symbol | |
3349 | PARAMS ((struct aout_link_hash_entry *, PTR)); | |
3350 | static boolean aout_link_input_section | |
3351 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3352 | asection *input_section, file_ptr *reloff_ptr, | |
3353 | bfd_size_type rel_size)); | |
3354 | static INLINE asection *aout_reloc_type_to_section | |
3355 | PARAMS ((bfd *, int)); | |
3356 | static boolean aout_link_reloc_link_order | |
3357 | PARAMS ((struct aout_final_link_info *, asection *, | |
3358 | struct bfd_link_order *)); | |
3359 | static boolean pdp11_aout_link_input_section | |
3360 | PARAMS ((struct aout_final_link_info *finfo, | |
3361 | bfd *input_bfd, | |
3362 | asection *input_section, | |
3363 | struct pdp11_aout_reloc_external *relocs, | |
3364 | bfd_size_type rel_size, | |
3365 | bfd_byte *contents)); | |
3366 | ||
3367 | /* The function to create a new entry in the header file hash table. */ | |
3368 | ||
3369 | static struct bfd_hash_entry * | |
3370 | aout_link_includes_newfunc (entry, table, string) | |
3371 | struct bfd_hash_entry *entry; | |
3372 | struct bfd_hash_table *table; | |
3373 | const char *string; | |
3374 | { | |
3375 | struct aout_link_includes_entry *ret = | |
3376 | (struct aout_link_includes_entry *) entry; | |
3377 | ||
3378 | /* Allocate the structure if it has not already been allocated by a | |
3379 | subclass. */ | |
3380 | if (ret == (struct aout_link_includes_entry *) NULL) | |
3381 | ret = ((struct aout_link_includes_entry *) | |
3382 | bfd_hash_allocate (table, | |
3383 | sizeof (struct aout_link_includes_entry))); | |
3384 | if (ret == (struct aout_link_includes_entry *) NULL) | |
3385 | return (struct bfd_hash_entry *) ret; | |
3386 | ||
3387 | /* Call the allocation method of the superclass. */ | |
3388 | ret = ((struct aout_link_includes_entry *) | |
3389 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
3390 | if (ret) | |
3391 | { | |
3392 | /* Set local fields. */ | |
3393 | ret->totals = NULL; | |
3394 | } | |
3395 | ||
3396 | return (struct bfd_hash_entry *) ret; | |
3397 | } | |
3398 | ||
3399 | /* Do the final link step. This is called on the output BFD. The | |
3400 | INFO structure should point to a list of BFDs linked through the | |
3401 | link_next field which can be used to find each BFD which takes part | |
3402 | in the output. Also, each section in ABFD should point to a list | |
3403 | of bfd_link_order structures which list all the input sections for | |
3404 | the output section. */ | |
3405 | ||
3406 | boolean | |
3407 | NAME(aout,final_link) (abfd, info, callback) | |
3408 | bfd *abfd; | |
3409 | struct bfd_link_info *info; | |
3410 | void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *)); | |
3411 | { | |
3412 | struct aout_final_link_info aout_info; | |
3413 | boolean includes_hash_initialized = false; | |
3414 | register bfd *sub; | |
3415 | bfd_size_type trsize, drsize; | |
dc810e39 AM |
3416 | bfd_size_type max_contents_size; |
3417 | bfd_size_type max_relocs_size; | |
3418 | bfd_size_type max_sym_count; | |
e135f41b NC |
3419 | bfd_size_type text_size; |
3420 | file_ptr text_end; | |
3421 | register struct bfd_link_order *p; | |
3422 | asection *o; | |
3423 | boolean have_link_order_relocs; | |
3424 | ||
3425 | if (info->shared) | |
3426 | abfd->flags |= DYNAMIC; | |
3427 | ||
3428 | aout_info.info = info; | |
3429 | aout_info.output_bfd = abfd; | |
3430 | aout_info.contents = NULL; | |
3431 | aout_info.relocs = NULL; | |
3432 | aout_info.symbol_map = NULL; | |
3433 | aout_info.output_syms = NULL; | |
3434 | ||
3435 | if (! bfd_hash_table_init_n (&aout_info.includes.root, | |
3436 | aout_link_includes_newfunc, | |
3437 | 251)) | |
3438 | goto error_return; | |
3439 | includes_hash_initialized = true; | |
3440 | ||
3441 | /* Figure out the largest section size. Also, if generating | |
3442 | relocateable output, count the relocs. */ | |
3443 | trsize = 0; | |
3444 | drsize = 0; | |
3445 | max_contents_size = 0; | |
3446 | max_relocs_size = 0; | |
3447 | max_sym_count = 0; | |
3448 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
3449 | { | |
3450 | size_t sz; | |
3451 | ||
3452 | if (info->relocateable) | |
3453 | { | |
3454 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) | |
3455 | { | |
3456 | trsize += exec_hdr (sub)->a_trsize; | |
3457 | drsize += exec_hdr (sub)->a_drsize; | |
3458 | } | |
3459 | else | |
3460 | { | |
3461 | /* FIXME: We need to identify the .text and .data sections | |
3462 | and call get_reloc_upper_bound and canonicalize_reloc to | |
3463 | work out the number of relocs needed, and then multiply | |
3464 | by the reloc size. */ | |
3465 | (*_bfd_error_handler) | |
3466 | ("%s: relocateable link from %s to %s not supported", | |
3467 | bfd_get_filename (abfd), | |
3468 | sub->xvec->name, abfd->xvec->name); | |
3469 | bfd_set_error (bfd_error_invalid_operation); | |
3470 | goto error_return; | |
3471 | } | |
3472 | } | |
3473 | ||
3474 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) | |
3475 | { | |
3476 | sz = bfd_section_size (sub, obj_textsec (sub)); | |
3477 | if (sz > max_contents_size) | |
3478 | max_contents_size = sz; | |
3479 | sz = bfd_section_size (sub, obj_datasec (sub)); | |
3480 | if (sz > max_contents_size) | |
3481 | max_contents_size = sz; | |
3482 | ||
3483 | sz = exec_hdr (sub)->a_trsize; | |
3484 | if (sz > max_relocs_size) | |
3485 | max_relocs_size = sz; | |
3486 | sz = exec_hdr (sub)->a_drsize; | |
3487 | if (sz > max_relocs_size) | |
3488 | max_relocs_size = sz; | |
3489 | ||
3490 | sz = obj_aout_external_sym_count (sub); | |
3491 | if (sz > max_sym_count) | |
3492 | max_sym_count = sz; | |
3493 | } | |
3494 | } | |
3495 | ||
3496 | if (info->relocateable) | |
3497 | { | |
3498 | if (obj_textsec (abfd) != (asection *) NULL) | |
3499 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
3500 | ->link_order_head) | |
3501 | * obj_reloc_entry_size (abfd)); | |
3502 | if (obj_datasec (abfd) != (asection *) NULL) | |
3503 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
3504 | ->link_order_head) | |
3505 | * obj_reloc_entry_size (abfd)); | |
3506 | } | |
3507 | ||
3508 | exec_hdr (abfd)->a_trsize = trsize; | |
3509 | exec_hdr (abfd)->a_drsize = drsize; | |
3510 | ||
3511 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); | |
3512 | ||
3513 | /* Adjust the section sizes and vmas according to the magic number. | |
3514 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
3515 | filepos for each section. */ | |
3516 | if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
3517 | goto error_return; | |
3518 | ||
3519 | /* The relocation and symbol file positions differ among a.out | |
3520 | targets. We are passed a callback routine from the backend | |
3521 | specific code to handle this. | |
3522 | FIXME: At this point we do not know how much space the symbol | |
3523 | table will require. This will not work for any (nonstandard) | |
3524 | a.out target that needs to know the symbol table size before it | |
3525 | can compute the relocation file positions. This may or may not | |
3526 | be the case for the hp300hpux target, for example. */ | |
3527 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, | |
3528 | &aout_info.symoff); | |
3529 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
3530 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
3531 | obj_sym_filepos (abfd) = aout_info.symoff; | |
3532 | ||
3533 | /* We keep a count of the symbols as we output them. */ | |
3534 | obj_aout_external_sym_count (abfd) = 0; | |
3535 | ||
3536 | /* We accumulate the string table as we write out the symbols. */ | |
3537 | aout_info.strtab = _bfd_stringtab_init (); | |
3538 | if (aout_info.strtab == NULL) | |
3539 | goto error_return; | |
3540 | ||
3541 | /* Allocate buffers to hold section contents and relocs. */ | |
3542 | aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size); | |
3543 | aout_info.relocs = (PTR) bfd_malloc (max_relocs_size); | |
3544 | aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int *)); | |
3545 | aout_info.output_syms = ((struct external_nlist *) | |
3546 | bfd_malloc ((max_sym_count + 1) | |
3547 | * sizeof (struct external_nlist))); | |
3548 | if ((aout_info.contents == NULL && max_contents_size != 0) | |
3549 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
3550 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
3551 | || aout_info.output_syms == NULL) | |
3552 | goto error_return; | |
3553 | ||
3554 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
3555 | required by SunOS. Doing this here rather than in sunos.c is a | |
3556 | hack, but it's easier than exporting everything which would be | |
3557 | needed. */ | |
3558 | { | |
3559 | struct aout_link_hash_entry *h; | |
3560 | ||
3561 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
3562 | false, false, false); | |
3563 | if (h != NULL) | |
3564 | aout_link_write_other_symbol (h, &aout_info); | |
3565 | } | |
3566 | ||
3567 | /* The most time efficient way to do the link would be to read all | |
3568 | the input object files into memory and then sort out the | |
3569 | information into the output file. Unfortunately, that will | |
3570 | probably use too much memory. Another method would be to step | |
3571 | through everything that composes the text section and write it | |
3572 | out, and then everything that composes the data section and write | |
3573 | it out, and then write out the relocs, and then write out the | |
3574 | symbols. Unfortunately, that requires reading stuff from each | |
3575 | input file several times, and we will not be able to keep all the | |
3576 | input files open simultaneously, and reopening them will be slow. | |
3577 | ||
3578 | What we do is basically process one input file at a time. We do | |
3579 | everything we need to do with an input file once--copy over the | |
3580 | section contents, handle the relocation information, and write | |
3581 | out the symbols--and then we throw away the information we read | |
3582 | from it. This approach requires a lot of lseeks of the output | |
3583 | file, which is unfortunate but still faster than reopening a lot | |
3584 | of files. | |
3585 | ||
3586 | We use the output_has_begun field of the input BFDs to see | |
3587 | whether we have already handled it. */ | |
3588 | for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next) | |
3589 | sub->output_has_begun = false; | |
3590 | ||
3591 | /* Mark all sections which are to be included in the link. This | |
3592 | will normally be every section. We need to do this so that we | |
3593 | can identify any sections which the linker has decided to not | |
3594 | include. */ | |
3595 | for (o = abfd->sections; o != NULL; o = o->next) | |
3596 | { | |
3597 | for (p = o->link_order_head; p != NULL; p = p->next) | |
3598 | { | |
3599 | if (p->type == bfd_indirect_link_order) | |
3600 | p->u.indirect.section->linker_mark = true; | |
3601 | } | |
3602 | } | |
3603 | ||
3604 | have_link_order_relocs = false; | |
3605 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
3606 | { | |
3607 | for (p = o->link_order_head; | |
3608 | p != (struct bfd_link_order *) NULL; | |
3609 | p = p->next) | |
3610 | { | |
3611 | if (p->type == bfd_indirect_link_order | |
3612 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
3613 | == bfd_target_aout_flavour)) | |
3614 | { | |
3615 | bfd *input_bfd; | |
3616 | ||
3617 | input_bfd = p->u.indirect.section->owner; | |
3618 | if (! input_bfd->output_has_begun) | |
3619 | { | |
3620 | if (! aout_link_input_bfd (&aout_info, input_bfd)) | |
3621 | goto error_return; | |
3622 | input_bfd->output_has_begun = true; | |
3623 | } | |
3624 | } | |
3625 | else if (p->type == bfd_section_reloc_link_order | |
3626 | || p->type == bfd_symbol_reloc_link_order) | |
3627 | { | |
3628 | /* These are handled below. */ | |
3629 | have_link_order_relocs = true; | |
3630 | } | |
3631 | else | |
3632 | { | |
3633 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
3634 | goto error_return; | |
3635 | } | |
3636 | } | |
3637 | } | |
3638 | ||
3639 | /* Write out any symbols that we have not already written out. */ | |
3640 | aout_link_hash_traverse (aout_hash_table (info), | |
3641 | aout_link_write_other_symbol, | |
3642 | (PTR) &aout_info); | |
3643 | ||
3644 | /* Now handle any relocs we were asked to create by the linker. | |
3645 | These did not come from any input file. We must do these after | |
3646 | we have written out all the symbols, so that we know the symbol | |
3647 | indices to use. */ | |
3648 | if (have_link_order_relocs) | |
3649 | { | |
3650 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
3651 | { | |
3652 | for (p = o->link_order_head; | |
3653 | p != (struct bfd_link_order *) NULL; | |
3654 | p = p->next) | |
3655 | { | |
3656 | if (p->type == bfd_section_reloc_link_order | |
3657 | || p->type == bfd_symbol_reloc_link_order) | |
3658 | { | |
3659 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
3660 | goto error_return; | |
3661 | } | |
3662 | } | |
3663 | } | |
3664 | } | |
3665 | ||
3666 | if (aout_info.contents != NULL) | |
3667 | { | |
3668 | free (aout_info.contents); | |
3669 | aout_info.contents = NULL; | |
3670 | } | |
3671 | if (aout_info.relocs != NULL) | |
3672 | { | |
3673 | free (aout_info.relocs); | |
3674 | aout_info.relocs = NULL; | |
3675 | } | |
3676 | if (aout_info.symbol_map != NULL) | |
3677 | { | |
3678 | free (aout_info.symbol_map); | |
3679 | aout_info.symbol_map = NULL; | |
3680 | } | |
3681 | if (aout_info.output_syms != NULL) | |
3682 | { | |
3683 | free (aout_info.output_syms); | |
3684 | aout_info.output_syms = NULL; | |
3685 | } | |
3686 | if (includes_hash_initialized) | |
3687 | { | |
3688 | bfd_hash_table_free (&aout_info.includes.root); | |
3689 | includes_hash_initialized = false; | |
3690 | } | |
3691 | ||
3692 | /* Finish up any dynamic linking we may be doing. */ | |
3693 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
3694 | { | |
3695 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
3696 | goto error_return; | |
3697 | } | |
3698 | ||
3699 | /* Update the header information. */ | |
3700 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
3701 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
3702 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
3703 | obj_textsec (abfd)->reloc_count = | |
3704 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
3705 | obj_datasec (abfd)->reloc_count = | |
3706 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
3707 | ||
3708 | /* Write out the string table, unless there are no symbols. */ | |
3709 | if (abfd->symcount > 0) | |
3710 | { | |
3711 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
3712 | || ! emit_stringtab (abfd, aout_info.strtab)) | |
3713 | goto error_return; | |
3714 | } | |
3715 | else if (obj_textsec (abfd)->reloc_count == 0 | |
3716 | && obj_datasec (abfd)->reloc_count == 0) | |
3717 | { | |
3718 | bfd_byte b; | |
3719 | ||
3720 | b = 0; | |
3721 | if (bfd_seek (abfd, | |
dc810e39 AM |
3722 | (file_ptr) (obj_datasec (abfd)->filepos |
3723 | + exec_hdr (abfd)->a_data | |
3724 | - 1), | |
e135f41b | 3725 | SEEK_SET) != 0 |
dc810e39 | 3726 | || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1) |
e135f41b NC |
3727 | goto error_return; |
3728 | } | |
3729 | ||
3730 | return true; | |
3731 | ||
3732 | error_return: | |
3733 | if (aout_info.contents != NULL) | |
3734 | free (aout_info.contents); | |
3735 | if (aout_info.relocs != NULL) | |
3736 | free (aout_info.relocs); | |
3737 | if (aout_info.symbol_map != NULL) | |
3738 | free (aout_info.symbol_map); | |
3739 | if (aout_info.output_syms != NULL) | |
3740 | free (aout_info.output_syms); | |
3741 | if (includes_hash_initialized) | |
3742 | bfd_hash_table_free (&aout_info.includes.root); | |
3743 | return false; | |
3744 | } | |
3745 | ||
3746 | /* Link an a.out input BFD into the output file. */ | |
3747 | ||
3748 | static boolean | |
3749 | aout_link_input_bfd (finfo, input_bfd) | |
3750 | struct aout_final_link_info *finfo; | |
3751 | bfd *input_bfd; | |
3752 | { | |
3753 | bfd_size_type sym_count; | |
3754 | ||
3755 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); | |
3756 | ||
3757 | /* If this is a dynamic object, it may need special handling. */ | |
3758 | if ((input_bfd->flags & DYNAMIC) != 0 | |
3759 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
3760 | { | |
3761 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
3762 | (finfo->info, input_bfd)); | |
3763 | } | |
3764 | ||
3765 | /* Get the symbols. We probably have them already, unless | |
3766 | finfo->info->keep_memory is false. */ | |
3767 | if (! aout_get_external_symbols (input_bfd)) | |
3768 | return false; | |
3769 | ||
3770 | sym_count = obj_aout_external_sym_count (input_bfd); | |
3771 | ||
3772 | /* Write out the symbols and get a map of the new indices. The map | |
3773 | is placed into finfo->symbol_map. */ | |
3774 | if (! aout_link_write_symbols (finfo, input_bfd)) | |
3775 | return false; | |
3776 | ||
3777 | /* Relocate and write out the sections. These functions use the | |
3778 | symbol map created by aout_link_write_symbols. The linker_mark | |
3779 | field will be set if these sections are to be included in the | |
3780 | link, which will normally be the case. */ | |
3781 | if (obj_textsec (input_bfd)->linker_mark) | |
3782 | { | |
3783 | if (! aout_link_input_section (finfo, input_bfd, | |
3784 | obj_textsec (input_bfd), | |
3785 | &finfo->treloff, | |
3786 | exec_hdr (input_bfd)->a_trsize)) | |
3787 | return false; | |
3788 | } | |
3789 | if (obj_datasec (input_bfd)->linker_mark) | |
3790 | { | |
3791 | if (! aout_link_input_section (finfo, input_bfd, | |
3792 | obj_datasec (input_bfd), | |
3793 | &finfo->dreloff, | |
3794 | exec_hdr (input_bfd)->a_drsize)) | |
3795 | return false; | |
3796 | } | |
3797 | ||
3798 | /* If we are not keeping memory, we don't need the symbols any | |
3799 | longer. We still need them if we are keeping memory, because the | |
3800 | strings in the hash table point into them. */ | |
3801 | if (! finfo->info->keep_memory) | |
3802 | { | |
3803 | if (! aout_link_free_symbols (input_bfd)) | |
3804 | return false; | |
3805 | } | |
3806 | ||
3807 | return true; | |
3808 | } | |
3809 | ||
3810 | /* Adjust and write out the symbols for an a.out file. Set the new | |
3811 | symbol indices into a symbol_map. */ | |
3812 | ||
3813 | static boolean | |
3814 | aout_link_write_symbols (finfo, input_bfd) | |
3815 | struct aout_final_link_info *finfo; | |
3816 | bfd *input_bfd; | |
3817 | { | |
3818 | bfd *output_bfd; | |
3819 | bfd_size_type sym_count; | |
3820 | char *strings; | |
3821 | enum bfd_link_strip strip; | |
3822 | enum bfd_link_discard discard; | |
3823 | struct external_nlist *outsym; | |
3824 | bfd_size_type strtab_index; | |
3825 | register struct external_nlist *sym; | |
3826 | struct external_nlist *sym_end; | |
3827 | struct aout_link_hash_entry **sym_hash; | |
3828 | int *symbol_map; | |
3829 | boolean pass; | |
3830 | boolean skip_next; | |
3831 | ||
3832 | output_bfd = finfo->output_bfd; | |
3833 | sym_count = obj_aout_external_sym_count (input_bfd); | |
3834 | strings = obj_aout_external_strings (input_bfd); | |
3835 | strip = finfo->info->strip; | |
3836 | discard = finfo->info->discard; | |
3837 | outsym = finfo->output_syms; | |
3838 | ||
3839 | /* First write out a symbol for this object file, unless we are | |
3840 | discarding such symbols. */ | |
3841 | if (strip != strip_all | |
3842 | && (strip != strip_some | |
3843 | || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename, | |
3844 | false, false) != NULL) | |
3845 | && discard != discard_all) | |
3846 | { | |
dc810e39 | 3847 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); |
e135f41b NC |
3848 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
3849 | input_bfd->filename, false); | |
3850 | if (strtab_index == (bfd_size_type) -1) | |
3851 | return false; | |
3852 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
3853 | PUT_WORD (output_bfd, | |
3854 | (bfd_get_section_vma (output_bfd, | |
3855 | obj_textsec (input_bfd)->output_section) | |
3856 | + obj_textsec (input_bfd)->output_offset), | |
3857 | outsym->e_value); | |
3858 | ++obj_aout_external_sym_count (output_bfd); | |
3859 | ++outsym; | |
3860 | } | |
3861 | ||
3862 | pass = false; | |
3863 | skip_next = false; | |
3864 | sym = obj_aout_external_syms (input_bfd); | |
3865 | sym_end = sym + sym_count; | |
3866 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
3867 | symbol_map = finfo->symbol_map; | |
dc810e39 | 3868 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); |
e135f41b NC |
3869 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) |
3870 | { | |
3871 | const char *name; | |
3872 | int type; | |
3873 | struct aout_link_hash_entry *h; | |
3874 | boolean skip; | |
3875 | asection *symsec; | |
3876 | bfd_vma val = 0; | |
3877 | boolean copy; | |
3878 | ||
3879 | /* We set *symbol_map to 0 above for all symbols. If it has | |
3880 | already been set to -1 for this symbol, it means that we are | |
3881 | discarding it because it appears in a duplicate header file. | |
3882 | See the N_BINCL code below. */ | |
3883 | if (*symbol_map == -1) | |
3884 | continue; | |
3885 | ||
3886 | /* Initialize *symbol_map to -1, which means that the symbol was | |
3887 | not copied into the output file. We will change it later if | |
3888 | we do copy the symbol over. */ | |
3889 | *symbol_map = -1; | |
3890 | ||
dc810e39 | 3891 | type = H_GET_8 (input_bfd, sym->e_type); |
e135f41b NC |
3892 | name = strings + GET_WORD (input_bfd, sym->e_strx); |
3893 | ||
3894 | h = NULL; | |
3895 | ||
3896 | if (pass) | |
3897 | { | |
3898 | /* Pass this symbol through. It is the target of an | |
3899 | indirect or warning symbol. */ | |
3900 | val = GET_WORD (input_bfd, sym->e_value); | |
3901 | pass = false; | |
3902 | } | |
3903 | else if (skip_next) | |
3904 | { | |
3905 | /* Skip this symbol, which is the target of an indirect | |
3906 | symbol that we have changed to no longer be an indirect | |
3907 | symbol. */ | |
3908 | skip_next = false; | |
3909 | continue; | |
3910 | } | |
3911 | else | |
3912 | { | |
3913 | struct aout_link_hash_entry *hresolve; | |
3914 | ||
3915 | /* We have saved the hash table entry for this symbol, if | |
3916 | there is one. Note that we could just look it up again | |
3917 | in the hash table, provided we first check that it is an | |
3918 | external symbol. */ | |
3919 | h = *sym_hash; | |
3920 | ||
3921 | /* Use the name from the hash table, in case the symbol was | |
3922 | wrapped. */ | |
3923 | if (h != NULL) | |
3924 | name = h->root.root.string; | |
3925 | ||
3926 | /* If this is an indirect or warning symbol, then change | |
3927 | hresolve to the base symbol. We also change *sym_hash so | |
3928 | that the relocation routines relocate against the real | |
3929 | symbol. */ | |
3930 | hresolve = h; | |
3931 | if (h != (struct aout_link_hash_entry *) NULL | |
3932 | && (h->root.type == bfd_link_hash_indirect | |
3933 | || h->root.type == bfd_link_hash_warning)) | |
3934 | { | |
3935 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; | |
3936 | while (hresolve->root.type == bfd_link_hash_indirect | |
3937 | || hresolve->root.type == bfd_link_hash_warning) | |
3938 | hresolve = ((struct aout_link_hash_entry *) | |
3939 | hresolve->root.u.i.link); | |
3940 | *sym_hash = hresolve; | |
3941 | } | |
3942 | ||
3943 | /* If the symbol has already been written out, skip it. */ | |
3944 | if (h != (struct aout_link_hash_entry *) NULL | |
3945 | && h->root.type != bfd_link_hash_warning | |
3946 | && h->written) | |
3947 | { | |
3948 | if ((type & N_TYPE) == N_INDR | |
3949 | || type == N_WARNING) | |
3950 | skip_next = true; | |
3951 | *symbol_map = h->indx; | |
3952 | continue; | |
3953 | } | |
3954 | ||
3955 | /* See if we are stripping this symbol. */ | |
3956 | skip = false; | |
3957 | switch (strip) | |
3958 | { | |
3959 | case strip_none: | |
3960 | break; | |
3961 | case strip_debugger: | |
3962 | if ((type & N_STAB) != 0) | |
3963 | skip = true; | |
3964 | break; | |
3965 | case strip_some: | |
3966 | if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false) | |
3967 | == NULL) | |
3968 | skip = true; | |
3969 | break; | |
3970 | case strip_all: | |
3971 | skip = true; | |
3972 | break; | |
3973 | } | |
3974 | if (skip) | |
3975 | { | |
3976 | if (h != (struct aout_link_hash_entry *) NULL) | |
3977 | h->written = true; | |
3978 | continue; | |
3979 | } | |
3980 | ||
3981 | /* Get the value of the symbol. */ | |
3982 | if ((type & N_TYPE) == N_TEXT | |
3983 | || type == N_WEAKT) | |
3984 | symsec = obj_textsec (input_bfd); | |
3985 | else if ((type & N_TYPE) == N_DATA | |
3986 | || type == N_WEAKD) | |
3987 | symsec = obj_datasec (input_bfd); | |
3988 | else if ((type & N_TYPE) == N_BSS | |
3989 | || type == N_WEAKB) | |
3990 | symsec = obj_bsssec (input_bfd); | |
3991 | else if ((type & N_TYPE) == N_ABS | |
3992 | || type == N_WEAKA) | |
3993 | symsec = bfd_abs_section_ptr; | |
3994 | else if (((type & N_TYPE) == N_INDR | |
3995 | && (hresolve == (struct aout_link_hash_entry *) NULL | |
3996 | || (hresolve->root.type != bfd_link_hash_defined | |
3997 | && hresolve->root.type != bfd_link_hash_defweak | |
3998 | && hresolve->root.type != bfd_link_hash_common))) | |
3999 | || type == N_WARNING) | |
4000 | { | |
4001 | /* Pass the next symbol through unchanged. The | |
4002 | condition above for indirect symbols is so that if | |
4003 | the indirect symbol was defined, we output it with | |
4004 | the correct definition so the debugger will | |
4005 | understand it. */ | |
4006 | pass = true; | |
4007 | val = GET_WORD (input_bfd, sym->e_value); | |
4008 | symsec = NULL; | |
4009 | } | |
4010 | else if ((type & N_STAB) != 0) | |
4011 | { | |
4012 | val = GET_WORD (input_bfd, sym->e_value); | |
4013 | symsec = NULL; | |
4014 | } | |
4015 | else | |
4016 | { | |
4017 | /* If we get here with an indirect symbol, it means that | |
4018 | we are outputting it with a real definition. In such | |
4019 | a case we do not want to output the next symbol, | |
4020 | which is the target of the indirection. */ | |
4021 | if ((type & N_TYPE) == N_INDR) | |
4022 | skip_next = true; | |
4023 | ||
4024 | symsec = NULL; | |
4025 | ||
4026 | /* We need to get the value from the hash table. We use | |
4027 | hresolve so that if we have defined an indirect | |
4028 | symbol we output the final definition. */ | |
4029 | if (h == (struct aout_link_hash_entry *) NULL) | |
4030 | { | |
4031 | switch (type & N_TYPE) | |
4032 | { | |
4033 | case N_SETT: | |
4034 | symsec = obj_textsec (input_bfd); | |
4035 | break; | |
4036 | case N_SETD: | |
4037 | symsec = obj_datasec (input_bfd); | |
4038 | break; | |
4039 | case N_SETB: | |
4040 | symsec = obj_bsssec (input_bfd); | |
4041 | break; | |
4042 | case N_SETA: | |
4043 | symsec = bfd_abs_section_ptr; | |
4044 | break; | |
4045 | default: | |
4046 | val = 0; | |
4047 | break; | |
4048 | } | |
4049 | } | |
4050 | else if (hresolve->root.type == bfd_link_hash_defined | |
4051 | || hresolve->root.type == bfd_link_hash_defweak) | |
4052 | { | |
4053 | asection *input_section; | |
4054 | asection *output_section; | |
4055 | ||
4056 | /* This case usually means a common symbol which was | |
4057 | turned into a defined symbol. */ | |
4058 | input_section = hresolve->root.u.def.section; | |
4059 | output_section = input_section->output_section; | |
4060 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
4061 | || output_section->owner == output_bfd); | |
4062 | val = (hresolve->root.u.def.value | |
4063 | + bfd_get_section_vma (output_bfd, output_section) | |
4064 | + input_section->output_offset); | |
4065 | ||
4066 | /* Get the correct type based on the section. If | |
4067 | this is a constructed set, force it to be | |
4068 | globally visible. */ | |
4069 | if (type == N_SETT | |
4070 | || type == N_SETD | |
4071 | || type == N_SETB | |
4072 | || type == N_SETA) | |
4073 | type |= N_EXT; | |
4074 | ||
4075 | type &=~ N_TYPE; | |
4076 | ||
4077 | if (output_section == obj_textsec (output_bfd)) | |
4078 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4079 | ? N_TEXT | |
4080 | : N_WEAKT); | |
4081 | else if (output_section == obj_datasec (output_bfd)) | |
4082 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4083 | ? N_DATA | |
4084 | : N_WEAKD); | |
4085 | else if (output_section == obj_bsssec (output_bfd)) | |
4086 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4087 | ? N_BSS | |
4088 | : N_WEAKB); | |
4089 | else | |
4090 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4091 | ? N_ABS | |
4092 | : N_WEAKA); | |
4093 | } | |
4094 | else if (hresolve->root.type == bfd_link_hash_common) | |
4095 | val = hresolve->root.u.c.size; | |
4096 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
4097 | { | |
4098 | val = 0; | |
4099 | type = N_WEAKU; | |
4100 | } | |
4101 | else | |
4102 | val = 0; | |
4103 | } | |
4104 | if (symsec != (asection *) NULL) | |
4105 | val = (symsec->output_section->vma | |
4106 | + symsec->output_offset | |
4107 | + (GET_WORD (input_bfd, sym->e_value) | |
4108 | - symsec->vma)); | |
4109 | ||
4110 | /* If this is a global symbol set the written flag, and if | |
4111 | it is a local symbol see if we should discard it. */ | |
4112 | if (h != (struct aout_link_hash_entry *) NULL) | |
4113 | { | |
4114 | h->written = true; | |
4115 | h->indx = obj_aout_external_sym_count (output_bfd); | |
4116 | } | |
4117 | else if ((type & N_TYPE) != N_SETT | |
4118 | && (type & N_TYPE) != N_SETD | |
4119 | && (type & N_TYPE) != N_SETB | |
4120 | && (type & N_TYPE) != N_SETA) | |
4121 | { | |
4122 | switch (discard) | |
4123 | { | |
4124 | case discard_none: | |
f5fa8ca2 | 4125 | case discard_sec_merge: |
e135f41b NC |
4126 | break; |
4127 | case discard_l: | |
4128 | if ((type & N_STAB) == 0 | |
4129 | && bfd_is_local_label_name (input_bfd, name)) | |
4130 | skip = true; | |
4131 | break; | |
4132 | case discard_all: | |
4133 | skip = true; | |
4134 | break; | |
4135 | } | |
4136 | if (skip) | |
4137 | { | |
4138 | pass = false; | |
4139 | continue; | |
4140 | } | |
4141 | } | |
4142 | ||
4143 | /* An N_BINCL symbol indicates the start of the stabs | |
4144 | entries for a header file. We need to scan ahead to the | |
4145 | next N_EINCL symbol, ignoring nesting, adding up all the | |
4146 | characters in the symbol names, not including the file | |
4147 | numbers in types (the first number after an open | |
4148 | parenthesis). */ | |
4149 | if (type == N_BINCL) | |
4150 | { | |
4151 | struct external_nlist *incl_sym; | |
4152 | int nest; | |
4153 | struct aout_link_includes_entry *incl_entry; | |
4154 | struct aout_link_includes_totals *t; | |
4155 | ||
4156 | val = 0; | |
4157 | nest = 0; | |
4158 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
4159 | { | |
4160 | int incl_type; | |
4161 | ||
dc810e39 | 4162 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
e135f41b NC |
4163 | if (incl_type == N_EINCL) |
4164 | { | |
4165 | if (nest == 0) | |
4166 | break; | |
4167 | --nest; | |
4168 | } | |
4169 | else if (incl_type == N_BINCL) | |
4170 | ++nest; | |
4171 | else if (nest == 0) | |
4172 | { | |
4173 | const char *s; | |
4174 | ||
4175 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); | |
4176 | for (; *s != '\0'; s++) | |
4177 | { | |
4178 | val += *s; | |
4179 | if (*s == '(') | |
4180 | { | |
4181 | /* Skip the file number. */ | |
4182 | ++s; | |
3882b010 | 4183 | while (ISDIGIT (*s)) |
e135f41b NC |
4184 | ++s; |
4185 | --s; | |
4186 | } | |
4187 | } | |
4188 | } | |
4189 | } | |
4190 | ||
4191 | /* If we have already included a header file with the | |
4192 | same value, then replace this one with an N_EXCL | |
4193 | symbol. */ | |
4194 | copy = ! finfo->info->keep_memory; | |
4195 | incl_entry = aout_link_includes_lookup (&finfo->includes, | |
4196 | name, true, copy); | |
4197 | if (incl_entry == NULL) | |
4198 | return false; | |
4199 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
4200 | if (t->total == val) | |
4201 | break; | |
4202 | if (t == NULL) | |
4203 | { | |
4204 | /* This is the first time we have seen this header | |
4205 | file with this set of stabs strings. */ | |
4206 | t = ((struct aout_link_includes_totals *) | |
4207 | bfd_hash_allocate (&finfo->includes.root, | |
4208 | sizeof *t)); | |
4209 | if (t == NULL) | |
4210 | return false; | |
4211 | t->total = val; | |
4212 | t->next = incl_entry->totals; | |
4213 | incl_entry->totals = t; | |
4214 | } | |
4215 | else | |
4216 | { | |
4217 | int *incl_map; | |
4218 | ||
4219 | /* This is a duplicate header file. We must change | |
4220 | it to be an N_EXCL entry, and mark all the | |
4221 | included symbols to prevent outputting them. */ | |
4222 | type = N_EXCL; | |
4223 | ||
4224 | nest = 0; | |
4225 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
4226 | incl_sym < sym_end; | |
4227 | incl_sym++, incl_map++) | |
4228 | { | |
4229 | int incl_type; | |
4230 | ||
dc810e39 | 4231 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
e135f41b NC |
4232 | if (incl_type == N_EINCL) |
4233 | { | |
4234 | if (nest == 0) | |
4235 | { | |
4236 | *incl_map = -1; | |
4237 | break; | |
4238 | } | |
4239 | --nest; | |
4240 | } | |
4241 | else if (incl_type == N_BINCL) | |
4242 | ++nest; | |
4243 | else if (nest == 0) | |
4244 | *incl_map = -1; | |
4245 | } | |
4246 | } | |
4247 | } | |
4248 | } | |
4249 | ||
4250 | /* Copy this symbol into the list of symbols we are going to | |
4251 | write out. */ | |
dc810e39 | 4252 | H_PUT_8 (output_bfd, type, outsym->e_type); |
e135f41b NC |
4253 | copy = false; |
4254 | if (! finfo->info->keep_memory) | |
4255 | { | |
4256 | /* name points into a string table which we are going to | |
4257 | free. If there is a hash table entry, use that string. | |
4258 | Otherwise, copy name into memory. */ | |
4259 | if (h != (struct aout_link_hash_entry *) NULL) | |
4260 | name = h->root.root.string; | |
4261 | else | |
4262 | copy = true; | |
4263 | } | |
4264 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, | |
4265 | name, copy); | |
4266 | if (strtab_index == (bfd_size_type) -1) | |
4267 | return false; | |
4268 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4269 | PUT_WORD (output_bfd, val, outsym->e_value); | |
4270 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
4271 | ++obj_aout_external_sym_count (output_bfd); | |
4272 | ++outsym; | |
4273 | } | |
4274 | ||
4275 | /* Write out the output symbols we have just constructed. */ | |
4276 | if (outsym > finfo->output_syms) | |
4277 | { | |
dc810e39 | 4278 | bfd_size_type size; |
e135f41b NC |
4279 | |
4280 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0) | |
4281 | return false; | |
dc810e39 AM |
4282 | size = outsym - finfo->output_syms; |
4283 | size *= EXTERNAL_NLIST_SIZE; | |
4284 | if (bfd_bwrite ((PTR) finfo->output_syms, size, output_bfd) != size) | |
e135f41b | 4285 | return false; |
dc810e39 | 4286 | finfo->symoff += size; |
e135f41b NC |
4287 | } |
4288 | ||
4289 | return true; | |
4290 | } | |
4291 | ||
4292 | /* Write out a symbol that was not associated with an a.out input | |
4293 | object. */ | |
4294 | ||
4295 | static boolean | |
4296 | aout_link_write_other_symbol (h, data) | |
4297 | struct aout_link_hash_entry *h; | |
4298 | PTR data; | |
4299 | { | |
4300 | struct aout_final_link_info *finfo = (struct aout_final_link_info *) data; | |
4301 | bfd *output_bfd; | |
4302 | int type; | |
4303 | bfd_vma val; | |
4304 | struct external_nlist outsym; | |
4305 | bfd_size_type indx; | |
dc810e39 | 4306 | bfd_size_type amt; |
e135f41b | 4307 | |
e92d460e AM |
4308 | if (h->root.type == bfd_link_hash_warning) |
4309 | { | |
4310 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
4311 | if (h->root.type == bfd_link_hash_new) | |
4312 | return true; | |
4313 | } | |
4314 | ||
e135f41b NC |
4315 | output_bfd = finfo->output_bfd; |
4316 | ||
4317 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) | |
4318 | { | |
4319 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) | |
4320 | (output_bfd, finfo->info, h))) | |
4321 | { | |
4322 | /* FIXME: No way to handle errors. */ | |
4323 | abort (); | |
4324 | } | |
4325 | } | |
4326 | ||
4327 | if (h->written) | |
4328 | return true; | |
4329 | ||
4330 | h->written = true; | |
4331 | ||
4332 | /* An indx of -2 means the symbol must be written. */ | |
4333 | if (h->indx != -2 | |
4334 | && (finfo->info->strip == strip_all | |
4335 | || (finfo->info->strip == strip_some | |
4336 | && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string, | |
4337 | false, false) == NULL))) | |
4338 | return true; | |
4339 | ||
4340 | switch (h->root.type) | |
4341 | { | |
4342 | default: | |
4343 | abort (); | |
4344 | /* Avoid variable not initialized warnings. */ | |
4345 | return true; | |
4346 | case bfd_link_hash_new: | |
4347 | /* This can happen for set symbols when sets are not being | |
4348 | built. */ | |
4349 | return true; | |
4350 | case bfd_link_hash_undefined: | |
4351 | type = N_UNDF | N_EXT; | |
4352 | val = 0; | |
4353 | break; | |
4354 | case bfd_link_hash_defined: | |
4355 | case bfd_link_hash_defweak: | |
4356 | { | |
4357 | asection *sec; | |
4358 | ||
4359 | sec = h->root.u.def.section->output_section; | |
4360 | BFD_ASSERT (bfd_is_abs_section (sec) | |
4361 | || sec->owner == output_bfd); | |
4362 | if (sec == obj_textsec (output_bfd)) | |
4363 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
4364 | else if (sec == obj_datasec (output_bfd)) | |
4365 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
4366 | else if (sec == obj_bsssec (output_bfd)) | |
4367 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
4368 | else | |
4369 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
4370 | type |= N_EXT; | |
4371 | val = (h->root.u.def.value | |
4372 | + sec->vma | |
4373 | + h->root.u.def.section->output_offset); | |
4374 | } | |
4375 | break; | |
4376 | case bfd_link_hash_common: | |
4377 | type = N_UNDF | N_EXT; | |
4378 | val = h->root.u.c.size; | |
4379 | break; | |
4380 | case bfd_link_hash_undefweak: | |
4381 | type = N_WEAKU; | |
4382 | val = 0; | |
4383 | case bfd_link_hash_indirect: | |
4384 | case bfd_link_hash_warning: | |
4385 | /* FIXME: Ignore these for now. The circumstances under which | |
4386 | they should be written out are not clear to me. */ | |
4387 | return true; | |
4388 | } | |
4389 | ||
dc810e39 | 4390 | H_PUT_8 (output_bfd, type, outsym.e_type); |
e135f41b NC |
4391 | indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string, |
4392 | false); | |
4393 | if (indx == (bfd_size_type) -1) | |
4394 | { | |
4395 | /* FIXME: No way to handle errors. */ | |
4396 | abort (); | |
4397 | } | |
4398 | PUT_WORD (output_bfd, indx, outsym.e_strx); | |
4399 | PUT_WORD (output_bfd, val, outsym.e_value); | |
4400 | ||
dc810e39 | 4401 | amt = EXTERNAL_NLIST_SIZE; |
e135f41b | 4402 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0 |
dc810e39 | 4403 | || bfd_bwrite ((PTR) &outsym, amt, output_bfd) != amt) |
e135f41b NC |
4404 | { |
4405 | /* FIXME: No way to handle errors. */ | |
4406 | abort (); | |
4407 | } | |
4408 | ||
dc810e39 | 4409 | finfo->symoff += amt; |
e135f41b NC |
4410 | h->indx = obj_aout_external_sym_count (output_bfd); |
4411 | ++obj_aout_external_sym_count (output_bfd); | |
4412 | ||
4413 | return true; | |
4414 | } | |
4415 | ||
4416 | /* Link an a.out section into the output file. */ | |
4417 | ||
4418 | static boolean | |
4419 | aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr, | |
4420 | rel_size) | |
4421 | struct aout_final_link_info *finfo; | |
4422 | bfd *input_bfd; | |
4423 | asection *input_section; | |
4424 | file_ptr *reloff_ptr; | |
4425 | bfd_size_type rel_size; | |
4426 | { | |
4427 | bfd_size_type input_size; | |
4428 | PTR relocs; | |
4429 | ||
4430 | /* Get the section contents. */ | |
4431 | input_size = bfd_section_size (input_bfd, input_section); | |
4432 | if (! bfd_get_section_contents (input_bfd, input_section, | |
4433 | (PTR) finfo->contents, | |
4434 | (file_ptr) 0, input_size)) | |
4435 | return false; | |
4436 | ||
4437 | /* Read in the relocs if we haven't already done it. */ | |
4438 | if (aout_section_data (input_section) != NULL | |
4439 | && aout_section_data (input_section)->relocs != NULL) | |
4440 | relocs = aout_section_data (input_section)->relocs; | |
4441 | else | |
4442 | { | |
4443 | relocs = finfo->relocs; | |
4444 | if (rel_size > 0) | |
4445 | { | |
4446 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
dc810e39 | 4447 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) |
e135f41b NC |
4448 | return false; |
4449 | } | |
4450 | } | |
4451 | ||
4452 | /* Relocate the section contents. */ | |
4453 | if (! pdp11_aout_link_input_section (finfo, input_bfd, input_section, | |
4454 | (struct pdp11_aout_reloc_external *) relocs, | |
4455 | rel_size, finfo->contents)) | |
4456 | return false; | |
4457 | ||
4458 | /* Write out the section contents. */ | |
4459 | if (! bfd_set_section_contents (finfo->output_bfd, | |
4460 | input_section->output_section, | |
4461 | (PTR) finfo->contents, | |
dc810e39 | 4462 | (file_ptr) input_section->output_offset, |
e135f41b NC |
4463 | input_size)) |
4464 | return false; | |
4465 | ||
4466 | /* If we are producing relocateable output, the relocs were | |
4467 | modified, and we now write them out. */ | |
4468 | if (finfo->info->relocateable && rel_size > 0) | |
4469 | { | |
4470 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) | |
4471 | return false; | |
dc810e39 | 4472 | if (bfd_bwrite (relocs, rel_size, finfo->output_bfd) != rel_size) |
e135f41b NC |
4473 | return false; |
4474 | *reloff_ptr += rel_size; | |
4475 | ||
4476 | /* Assert that the relocs have not run into the symbols, and | |
4477 | that if these are the text relocs they have not run into the | |
4478 | data relocs. */ | |
4479 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
4480 | && (reloff_ptr != &finfo->treloff | |
4481 | || (*reloff_ptr | |
4482 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
4483 | } | |
4484 | ||
4485 | return true; | |
4486 | } | |
4487 | ||
4488 | /* Get the section corresponding to a reloc index. */ | |
4489 | ||
4490 | static INLINE asection * | |
4491 | aout_reloc_type_to_section (abfd, type) | |
4492 | bfd *abfd; | |
4493 | int type; | |
4494 | { | |
4495 | switch (type) | |
4496 | { | |
4497 | case RTEXT: | |
4498 | return obj_textsec (abfd); | |
4499 | case RDATA: | |
4500 | return obj_datasec (abfd); | |
4501 | case RBSS: | |
4502 | return obj_bsssec (abfd); | |
4503 | case RABS: | |
4504 | return bfd_abs_section_ptr; | |
4505 | case REXT: | |
4506 | return bfd_und_section_ptr; | |
4507 | default: | |
4508 | abort (); | |
4509 | } | |
4510 | } | |
4511 | ||
4512 | static boolean | |
4513 | pdp11_aout_link_input_section (finfo, input_bfd, input_section, relocs, | |
4514 | rel_size, contents) | |
4515 | struct aout_final_link_info *finfo; | |
4516 | bfd *input_bfd; | |
4517 | asection *input_section; | |
4518 | struct pdp11_aout_reloc_external *relocs; | |
4519 | bfd_size_type rel_size; | |
4520 | bfd_byte *contents; | |
4521 | { | |
4522 | boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *, | |
4523 | bfd *, asection *, | |
4524 | struct aout_link_hash_entry *, | |
4525 | PTR, bfd_byte *, boolean *, | |
4526 | bfd_vma *)); | |
4527 | bfd *output_bfd; | |
4528 | boolean relocateable; | |
4529 | struct external_nlist *syms; | |
4530 | char *strings; | |
4531 | struct aout_link_hash_entry **sym_hashes; | |
4532 | int *symbol_map; | |
4533 | bfd_size_type reloc_count; | |
4534 | register struct pdp11_aout_reloc_external *rel; | |
4535 | struct pdp11_aout_reloc_external *rel_end; | |
4536 | ||
4537 | output_bfd = finfo->output_bfd; | |
4538 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; | |
4539 | ||
4540 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_SIZE); | |
4541 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
4542 | == output_bfd->xvec->header_byteorder); | |
4543 | ||
4544 | relocateable = finfo->info->relocateable; | |
4545 | syms = obj_aout_external_syms (input_bfd); | |
4546 | strings = obj_aout_external_strings (input_bfd); | |
4547 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
4548 | symbol_map = finfo->symbol_map; | |
4549 | ||
4550 | reloc_count = rel_size / RELOC_SIZE; | |
4551 | rel = relocs; | |
4552 | rel_end = (struct pdp11_aout_reloc_external *)(((char *)rel) + rel_size); | |
4553 | for (; rel < rel_end; ((char *)rel) += RELOC_SIZE) | |
4554 | { | |
4555 | bfd_vma r_addr; | |
4556 | int r_index; | |
4557 | int r_type; | |
4558 | int r_pcrel; | |
4559 | int r_extern; | |
4560 | reloc_howto_type *howto; | |
4561 | struct aout_link_hash_entry *h = NULL; | |
4562 | bfd_vma relocation; | |
4563 | bfd_reloc_status_type r; | |
4564 | int reloc_entry; | |
4565 | ||
4566 | reloc_entry = GET_WORD (input_bfd, (PTR)rel); | |
4567 | if (reloc_entry == 0) | |
4568 | continue; | |
4569 | ||
4570 | { | |
4571 | unsigned int howto_idx; | |
4572 | ||
4573 | r_index = (reloc_entry & RIDXMASK) >> 4; | |
4574 | r_type = reloc_entry & RTYPE; | |
4575 | r_pcrel = reloc_entry & RELFLG; | |
4576 | r_addr = (char *)rel - (char *)relocs; | |
4577 | ||
4578 | r_extern = (r_type == REXT); | |
4579 | ||
4580 | howto_idx = r_pcrel; | |
4581 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_pdp11)); | |
4582 | howto = howto_table_pdp11 + howto_idx; | |
4583 | } | |
4584 | ||
4585 | if (relocateable) | |
4586 | { | |
4587 | /* We are generating a relocateable output file, and must | |
4588 | modify the reloc accordingly. */ | |
4589 | if (r_extern) | |
4590 | { | |
4591 | /* If we know the symbol this relocation is against, | |
4592 | convert it into a relocation against a section. This | |
4593 | is what the native linker does. */ | |
4594 | h = sym_hashes[r_index]; | |
4595 | if (h != (struct aout_link_hash_entry *) NULL | |
4596 | && (h->root.type == bfd_link_hash_defined | |
4597 | || h->root.type == bfd_link_hash_defweak)) | |
4598 | { | |
4599 | asection *output_section; | |
4600 | ||
4601 | /* Compute a new r_index. */ | |
4602 | output_section = h->root.u.def.section->output_section; | |
4603 | if (output_section == obj_textsec (output_bfd)) | |
4604 | r_type = N_TEXT; | |
4605 | else if (output_section == obj_datasec (output_bfd)) | |
4606 | r_type = N_DATA; | |
4607 | else if (output_section == obj_bsssec (output_bfd)) | |
4608 | r_type = N_BSS; | |
4609 | else | |
4610 | r_type = N_ABS; | |
4611 | ||
4612 | /* Add the symbol value and the section VMA to the | |
4613 | addend stored in the contents. */ | |
4614 | relocation = (h->root.u.def.value | |
4615 | + output_section->vma | |
4616 | + h->root.u.def.section->output_offset); | |
4617 | } | |
4618 | else | |
4619 | { | |
4620 | /* We must change r_index according to the symbol | |
4621 | map. */ | |
4622 | r_index = symbol_map[r_index]; | |
4623 | ||
4624 | if (r_index == -1) | |
4625 | { | |
4626 | if (h != NULL) | |
4627 | { | |
4628 | /* We decided to strip this symbol, but it | |
4629 | turns out that we can't. Note that we | |
4630 | lose the other and desc information here. | |
4631 | I don't think that will ever matter for a | |
4632 | global symbol. */ | |
4633 | if (h->indx < 0) | |
4634 | { | |
4635 | h->indx = -2; | |
4636 | h->written = false; | |
4637 | if (! aout_link_write_other_symbol (h, | |
4638 | (PTR) finfo)) | |
4639 | return false; | |
4640 | } | |
4641 | r_index = h->indx; | |
4642 | } | |
4643 | else | |
4644 | { | |
4645 | const char *name; | |
4646 | ||
4647 | name = strings + GET_WORD (input_bfd, | |
4648 | syms[r_index].e_strx); | |
4649 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
4650 | (finfo->info, name, input_bfd, input_section, | |
4651 | r_addr))) | |
4652 | return false; | |
4653 | r_index = 0; | |
4654 | } | |
4655 | } | |
4656 | ||
4657 | relocation = 0; | |
4658 | } | |
4659 | ||
4660 | /* Write out the new r_index value. */ | |
4661 | reloc_entry = GET_WORD (input_bfd, rel->e_reloc_entry); | |
4662 | reloc_entry &= RIDXMASK; | |
4663 | reloc_entry |= r_index << 4; | |
4664 | PUT_WORD (input_bfd, reloc_entry, rel->e_reloc_entry); | |
4665 | } | |
4666 | else | |
4667 | { | |
4668 | asection *section; | |
4669 | ||
4670 | /* This is a relocation against a section. We must | |
4671 | adjust by the amount that the section moved. */ | |
4672 | section = aout_reloc_type_to_section (input_bfd, r_type); | |
4673 | relocation = (section->output_section->vma | |
4674 | + section->output_offset | |
4675 | - section->vma); | |
4676 | } | |
4677 | ||
4678 | /* Change the address of the relocation. */ | |
4679 | #if 0 | |
4680 | PUT_WORD (output_bfd, | |
4681 | r_addr + input_section->output_offset, | |
4682 | rel->r_address); | |
4683 | #else | |
4684 | fprintf (stderr, "TODO: change the address of the relocation\n"); | |
4685 | #endif | |
4686 | ||
4687 | /* Adjust a PC relative relocation by removing the reference | |
4688 | to the original address in the section and including the | |
4689 | reference to the new address. */ | |
4690 | if (r_pcrel) | |
4691 | relocation -= (input_section->output_section->vma | |
4692 | + input_section->output_offset | |
4693 | - input_section->vma); | |
4694 | ||
4695 | #ifdef MY_relocatable_reloc | |
4696 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
4697 | #endif | |
4698 | ||
4699 | if (relocation == 0) | |
4700 | r = bfd_reloc_ok; | |
4701 | else | |
4702 | r = MY_relocate_contents (howto, | |
4703 | input_bfd, relocation, | |
4704 | contents + r_addr); | |
4705 | } | |
4706 | else | |
4707 | { | |
4708 | boolean hundef; | |
4709 | ||
4710 | /* We are generating an executable, and must do a full | |
4711 | relocation. */ | |
4712 | hundef = false; | |
4713 | if (r_extern) | |
4714 | { | |
4715 | h = sym_hashes[r_index]; | |
4716 | ||
4717 | if (h != (struct aout_link_hash_entry *) NULL | |
4718 | && (h->root.type == bfd_link_hash_defined | |
4719 | || h->root.type == bfd_link_hash_defweak)) | |
4720 | { | |
4721 | relocation = (h->root.u.def.value | |
4722 | + h->root.u.def.section->output_section->vma | |
4723 | + h->root.u.def.section->output_offset); | |
4724 | } | |
4725 | else if (h != (struct aout_link_hash_entry *) NULL | |
4726 | && h->root.type == bfd_link_hash_undefweak) | |
4727 | relocation = 0; | |
4728 | else | |
4729 | { | |
4730 | hundef = true; | |
4731 | relocation = 0; | |
4732 | } | |
4733 | } | |
4734 | else | |
4735 | { | |
4736 | asection *section; | |
4737 | ||
4738 | section = aout_reloc_type_to_section (input_bfd, r_type); | |
4739 | relocation = (section->output_section->vma | |
4740 | + section->output_offset | |
4741 | - section->vma); | |
4742 | if (r_pcrel) | |
4743 | relocation += input_section->vma; | |
4744 | } | |
4745 | ||
4746 | if (check_dynamic_reloc != NULL) | |
4747 | { | |
4748 | boolean skip; | |
4749 | ||
4750 | if (! ((*check_dynamic_reloc) | |
4751 | (finfo->info, input_bfd, input_section, h, | |
4752 | (PTR) rel, contents, &skip, &relocation))) | |
4753 | return false; | |
4754 | if (skip) | |
4755 | continue; | |
4756 | } | |
4757 | ||
4758 | /* Now warn if a global symbol is undefined. We could not | |
4759 | do this earlier, because check_dynamic_reloc might want | |
4760 | to skip this reloc. */ | |
4761 | if (hundef && ! finfo->info->shared) | |
4762 | { | |
4763 | const char *name; | |
4764 | ||
4765 | if (h != NULL) | |
4766 | name = h->root.root.string; | |
4767 | else | |
4768 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
4769 | if (! ((*finfo->info->callbacks->undefined_symbol) | |
4770 | (finfo->info, name, input_bfd, input_section, | |
4771 | r_addr, true))) | |
4772 | return false; | |
4773 | } | |
4774 | ||
4775 | r = MY_final_link_relocate (howto, | |
4776 | input_bfd, input_section, | |
4777 | contents, r_addr, relocation, | |
4778 | (bfd_vma) 0); | |
4779 | } | |
4780 | ||
4781 | if (r != bfd_reloc_ok) | |
4782 | { | |
4783 | switch (r) | |
4784 | { | |
4785 | default: | |
4786 | case bfd_reloc_outofrange: | |
4787 | abort (); | |
4788 | case bfd_reloc_overflow: | |
4789 | { | |
4790 | const char *name; | |
4791 | ||
4792 | if (h != NULL) | |
4793 | name = h->root.root.string; | |
4794 | else if (r_extern) | |
4795 | name = strings + GET_WORD (input_bfd, | |
4796 | syms[r_index].e_strx); | |
4797 | else | |
4798 | { | |
4799 | asection *s; | |
4800 | ||
4801 | s = aout_reloc_type_to_section (input_bfd, r_type); | |
4802 | name = bfd_section_name (input_bfd, s); | |
4803 | } | |
4804 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
4805 | (finfo->info, name, howto->name, | |
4806 | (bfd_vma) 0, input_bfd, input_section, r_addr))) | |
4807 | return false; | |
4808 | } | |
4809 | break; | |
4810 | } | |
4811 | } | |
4812 | } | |
4813 | ||
4814 | return true; | |
4815 | } | |
4816 | ||
4817 | /* Handle a link order which is supposed to generate a reloc. */ | |
4818 | ||
4819 | static boolean | |
4820 | aout_link_reloc_link_order (finfo, o, p) | |
4821 | struct aout_final_link_info *finfo; | |
4822 | asection *o; | |
4823 | struct bfd_link_order *p; | |
4824 | { | |
4825 | struct bfd_link_order_reloc *pr; | |
4826 | int r_index; | |
4827 | int r_extern; | |
4828 | reloc_howto_type *howto; | |
4829 | file_ptr *reloff_ptr; | |
4830 | struct reloc_std_external srel; | |
4831 | PTR rel_ptr; | |
dc810e39 | 4832 | bfd_size_type rel_size; |
e135f41b NC |
4833 | |
4834 | pr = p->u.reloc.p; | |
4835 | ||
4836 | if (p->type == bfd_section_reloc_link_order) | |
4837 | { | |
4838 | r_extern = 0; | |
4839 | if (bfd_is_abs_section (pr->u.section)) | |
4840 | r_index = N_ABS | N_EXT; | |
4841 | else | |
4842 | { | |
4843 | BFD_ASSERT (pr->u.section->owner == finfo->output_bfd); | |
4844 | r_index = pr->u.section->target_index; | |
4845 | } | |
4846 | } | |
4847 | else | |
4848 | { | |
4849 | struct aout_link_hash_entry *h; | |
4850 | ||
4851 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); | |
4852 | r_extern = 1; | |
4853 | h = ((struct aout_link_hash_entry *) | |
4854 | bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info, | |
4855 | pr->u.name, false, false, true)); | |
4856 | if (h != (struct aout_link_hash_entry *) NULL | |
4857 | && h->indx >= 0) | |
4858 | r_index = h->indx; | |
4859 | else if (h != NULL) | |
4860 | { | |
4861 | /* We decided to strip this symbol, but it turns out that we | |
4862 | can't. Note that we lose the other and desc information | |
4863 | here. I don't think that will ever matter for a global | |
4864 | symbol. */ | |
4865 | h->indx = -2; | |
4866 | h->written = false; | |
4867 | if (! aout_link_write_other_symbol (h, (PTR) finfo)) | |
4868 | return false; | |
4869 | r_index = h->indx; | |
4870 | } | |
4871 | else | |
4872 | { | |
4873 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
4874 | (finfo->info, pr->u.name, (bfd *) NULL, | |
4875 | (asection *) NULL, (bfd_vma) 0))) | |
4876 | return false; | |
4877 | r_index = 0; | |
4878 | } | |
4879 | } | |
4880 | ||
4881 | howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc); | |
4882 | if (howto == 0) | |
4883 | { | |
4884 | bfd_set_error (bfd_error_bad_value); | |
4885 | return false; | |
4886 | } | |
4887 | ||
4888 | if (o == obj_textsec (finfo->output_bfd)) | |
4889 | reloff_ptr = &finfo->treloff; | |
4890 | else if (o == obj_datasec (finfo->output_bfd)) | |
4891 | reloff_ptr = &finfo->dreloff; | |
4892 | else | |
4893 | abort (); | |
4894 | ||
4895 | #ifdef MY_put_reloc | |
4896 | MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto, | |
4897 | &srel); | |
4898 | #else | |
4899 | { | |
4900 | int r_pcrel; | |
4901 | int r_baserel; | |
4902 | int r_jmptable; | |
4903 | int r_relative; | |
4904 | int r_length; | |
4905 | ||
4906 | fprintf (stderr, "TODO: line %d in bfd/pdp11.c\n", __LINE__); | |
4907 | ||
4908 | r_pcrel = howto->pc_relative; | |
4909 | r_baserel = (howto->type & 8) != 0; | |
4910 | r_jmptable = (howto->type & 16) != 0; | |
4911 | r_relative = (howto->type & 32) != 0; | |
4912 | r_length = howto->size; | |
4913 | ||
4914 | PUT_WORD (finfo->output_bfd, p->offset, srel.r_address); | |
4915 | if (bfd_header_big_endian (finfo->output_bfd)) | |
4916 | { | |
4917 | srel.r_index[0] = r_index >> 16; | |
4918 | srel.r_index[1] = r_index >> 8; | |
4919 | srel.r_index[2] = r_index; | |
4920 | srel.r_type[0] = | |
4921 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
4922 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
4923 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
4924 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
4925 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
4926 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
4927 | } | |
4928 | else | |
4929 | { | |
4930 | srel.r_index[2] = r_index >> 16; | |
4931 | srel.r_index[1] = r_index >> 8; | |
4932 | srel.r_index[0] = r_index; | |
4933 | srel.r_type[0] = | |
4934 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
4935 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
4936 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
4937 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
4938 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
4939 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
4940 | } | |
4941 | } | |
4942 | #endif | |
4943 | rel_ptr = (PTR) &srel; | |
4944 | ||
4945 | /* We have to write the addend into the object file, since | |
4946 | standard a.out relocs are in place. It would be more | |
4947 | reliable if we had the current contents of the file here, | |
4948 | rather than assuming zeroes, but we can't read the file since | |
4949 | it was opened using bfd_openw. */ | |
4950 | if (pr->addend != 0) | |
4951 | { | |
4952 | bfd_size_type size; | |
4953 | bfd_reloc_status_type r; | |
4954 | bfd_byte *buf; | |
4955 | boolean ok; | |
4956 | ||
4957 | size = bfd_get_reloc_size (howto); | |
4958 | buf = (bfd_byte *) bfd_zmalloc (size); | |
4959 | if (buf == (bfd_byte *) NULL) | |
4960 | return false; | |
4961 | r = MY_relocate_contents (howto, finfo->output_bfd, | |
4962 | pr->addend, buf); | |
4963 | switch (r) | |
4964 | { | |
4965 | case bfd_reloc_ok: | |
4966 | break; | |
4967 | default: | |
4968 | case bfd_reloc_outofrange: | |
4969 | abort (); | |
4970 | case bfd_reloc_overflow: | |
4971 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
4972 | (finfo->info, | |
4973 | (p->type == bfd_section_reloc_link_order | |
4974 | ? bfd_section_name (finfo->output_bfd, | |
4975 | pr->u.section) | |
4976 | : pr->u.name), | |
4977 | howto->name, pr->addend, (bfd *) NULL, | |
4978 | (asection *) NULL, (bfd_vma) 0))) | |
4979 | { | |
4980 | free (buf); | |
4981 | return false; | |
4982 | } | |
4983 | break; | |
4984 | } | |
4985 | ok = bfd_set_section_contents (finfo->output_bfd, o, | |
4986 | (PTR) buf, | |
4987 | (file_ptr) p->offset, | |
4988 | size); | |
4989 | free (buf); | |
4990 | if (! ok) | |
4991 | return false; | |
4992 | } | |
4993 | ||
dc810e39 | 4994 | rel_size = obj_reloc_entry_size (finfo->output_bfd); |
e135f41b | 4995 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 |
dc810e39 | 4996 | || bfd_bwrite (rel_ptr, rel_size, finfo->output_bfd) != rel_size) |
e135f41b NC |
4997 | return false; |
4998 | ||
dc810e39 | 4999 | *reloff_ptr += rel_size; |
e135f41b NC |
5000 | |
5001 | /* Assert that the relocs have not run into the symbols, and that n | |
5002 | the text relocs have not run into the data relocs. */ | |
5003 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
5004 | && (reloff_ptr != &finfo->treloff | |
5005 | || (*reloff_ptr | |
5006 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
5007 | ||
5008 | return true; | |
5009 | } | |
5010 | /* end of modified aoutx.h */ | |
5011 | ||
5012 | bfd_vma | |
5013 | bfd_getp32 (addr) | |
5014 | const bfd_byte *addr; | |
5015 | { | |
5016 | return (((((bfd_vma)addr[1] << 8) | addr[0]) << 8) | |
5017 | | addr[3]) << 8 | addr[2]; | |
5018 | } | |
5019 | ||
5020 | #define COERCE32(x) (((bfd_signed_vma) (x) ^ 0x80000000) - 0x80000000) | |
5021 | ||
5022 | bfd_signed_vma | |
5023 | bfd_getp_signed_32 (addr) | |
5024 | const bfd_byte *addr; | |
5025 | { | |
5026 | return COERCE32((((((bfd_vma)addr[1] << 8) | addr[0]) << 8) | |
5027 | | addr[3]) << 8 | addr[2]); | |
5028 | } | |
5029 | ||
5030 | void | |
5031 | bfd_putp32 (data, addr) | |
5032 | bfd_vma data; | |
5033 | bfd_byte *addr; | |
5034 | { | |
5035 | addr[0] = (bfd_byte)(data >> 16); | |
5036 | addr[1] = (bfd_byte)(data >> 24); | |
5037 | addr[2] = (bfd_byte)data; | |
5038 | addr[3] = (bfd_byte)(data >> 8); | |
5039 | } |