Commit | Line | Data |
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e135f41b | 1 | /* BFD back-end for PDP-11 a.out binaries. |
66eb6687 AM |
2 | Copyright 2001, 2002, 2003, 2004, 2005, 2006 |
3 | Free Software Foundation, Inc. | |
e135f41b | 4 | |
42ef282f | 5 | This file is part of BFD, the Binary File Descriptor library. |
e135f41b | 6 | |
42ef282f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
e135f41b | 11 | |
42ef282f NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
e135f41b | 16 | |
42ef282f NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
3e110533 | 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
e135f41b NC |
20 | |
21 | /* BFD backend for PDP-11, running 2.11BSD in particular. | |
22 | ||
23 | This file was hacked up by looking hard at the existing vaxnetbsd | |
24 | back end and the header files in 2.11BSD. | |
25 | ||
26 | TODO | |
27 | * support for V7 file formats | |
28 | * support for overlay object files (see 2.11 a.out(5)) | |
29 | * support for old and very old archives | |
30 | (see 2.11 ar(5), historical section) | |
dc810e39 | 31 | |
e135f41b NC |
32 | Search for TODO to find other areas needing more work. */ |
33 | ||
34 | #define BYTES_IN_WORD 2 | |
35 | #define BYTES_IN_LONG 4 | |
36 | #define ARCH_SIZE 16 | |
37 | #undef TARGET_IS_BIG_ENDIAN_P | |
38 | ||
39 | #define TARGET_PAGE_SIZE 1024 | |
40 | #define SEGMENT__SIZE TARGET_PAGE_SIZE | |
41 | ||
42 | #define DEFAULT_ARCH bfd_arch_pdp11 | |
43 | #define DEFAULT_MID M_PDP11 | |
44 | ||
e43d48cc AM |
45 | /* Do not "beautify" the CONCAT* macro args. Traditional C will not |
46 | remove whitespace added here, and thus will fail to concatenate | |
47 | the tokens. */ | |
48 | #define MY(OP) CONCAT2 (pdp11_aout_,OP) | |
49 | ||
e135f41b NC |
50 | /* This needs to start with a.out so GDB knows it is an a.out variant. */ |
51 | #define TARGETNAME "a.out-pdp11" | |
52 | ||
53 | /* This is the normal load address for executables. */ | |
54 | #define TEXT_START_ADDR 0 | |
55 | ||
56 | /* The header is not included in the text segment. */ | |
57 | #define N_HEADER_IN_TEXT(x) 0 | |
58 | ||
59 | /* There are no shared libraries. */ | |
60 | #define N_SHARED_LIB(x) 0 | |
61 | ||
62 | /* There is no flags field. */ | |
63 | #define N_FLAGS(exec) 0 | |
64 | ||
65 | #define N_SET_FLAGS(exec, flags) do { } while (0) | |
116c20d2 NC |
66 | #define N_BADMAG(x) (((x).a_info != OMAGIC) \ |
67 | && ((x).a_info != NMAGIC) \ | |
68 | && ((x).a_info != A_MAGIC3) \ | |
69 | && ((x).a_info != A_MAGIC4) \ | |
70 | && ((x).a_info != A_MAGIC5) \ | |
71 | && ((x).a_info != A_MAGIC6)) | |
e135f41b NC |
72 | |
73 | #include "bfd.h" | |
74 | ||
75 | #define external_exec pdp11_external_exec | |
76 | struct pdp11_external_exec | |
116c20d2 NC |
77 | { |
78 | bfd_byte e_info[2]; /* Magic number. */ | |
79 | bfd_byte e_text[2]; /* Length of text section in bytes. */ | |
80 | bfd_byte e_data[2]; /* Length of data section in bytes. */ | |
81 | bfd_byte e_bss[2]; /* Length of bss area in bytes. */ | |
82 | bfd_byte e_syms[2]; /* Length of symbol table in bytes. */ | |
83 | bfd_byte e_entry[2]; /* Start address. */ | |
84 | bfd_byte e_unused[2]; /* Not used. */ | |
85 | bfd_byte e_flag[2]; /* Relocation info stripped. */ | |
86 | bfd_byte e_relocatable; /* Ugly hack. */ | |
87 | }; | |
e135f41b NC |
88 | |
89 | #define EXEC_BYTES_SIZE (8 * 2) | |
90 | ||
91 | #define A_MAGIC1 OMAGIC | |
92 | #define OMAGIC 0407 /* ...object file or impure executable. */ | |
93 | #define A_MAGIC2 NMAGIC | |
116c20d2 NC |
94 | #define NMAGIC 0410 /* Pure executable. */ |
95 | #define ZMAGIC 0413 /* Demand-paged executable. */ | |
96 | #define A_MAGIC3 0411 /* Separated I&D. */ | |
97 | #define A_MAGIC4 0405 /* Overlay. */ | |
98 | #define A_MAGIC5 0430 /* Auto-overlay (nonseparate). */ | |
99 | #define A_MAGIC6 0431 /* Auto-overlay (separate). */ | |
e135f41b NC |
100 | #define QMAGIC 0 |
101 | #define BMAGIC 0 | |
102 | ||
103 | #define A_FLAG_RELOC_STRIPPED 0x0001 | |
104 | ||
105 | #define external_nlist pdp11_external_nlist | |
106 | struct pdp11_external_nlist | |
116c20d2 NC |
107 | { |
108 | bfd_byte e_unused[2]; /* Unused. */ | |
109 | bfd_byte e_strx[2]; /* Index into string table of name. */ | |
110 | bfd_byte e_type[1]; /* Type of symbol. */ | |
111 | bfd_byte e_ovly[1]; /* Overlay number. */ | |
112 | bfd_byte e_value[2]; /* Value of symbol. */ | |
113 | }; | |
e135f41b NC |
114 | |
115 | #define EXTERNAL_NLIST_SIZE 8 | |
116 | ||
117 | #define N_TXTOFF(x) (EXEC_BYTES_SIZE) | |
118 | #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) | |
119 | #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) | |
120 | #define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize) | |
121 | #define N_SYMOFF(x) (N_DRELOFF(x) + (x).a_drsize) | |
122 | #define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms) | |
123 | ||
124 | #define WRITE_HEADERS(abfd, execp) pdp11_aout_write_headers (abfd, execp) | |
125 | ||
126 | #include "sysdep.h" | |
127 | #include "libbfd.h" | |
128 | #include "libaout.h" | |
129 | ||
130 | #define SWAP_MAGIC(ext) bfd_getl16 (ext) | |
131 | ||
132 | #define MY_entry_is_text_address 1 | |
133 | ||
134 | #define MY_write_object_contents MY(write_object_contents) | |
116c20d2 | 135 | static bfd_boolean MY(write_object_contents) (bfd *); |
e135f41b NC |
136 | #define MY_text_includes_header 1 |
137 | ||
e135f41b NC |
138 | #define MY_BFD_TARGET |
139 | ||
140 | #include "aout-target.h" | |
141 | ||
116c20d2 | 142 | /* Start of modified aoutx.h. */ |
e135f41b NC |
143 | #define KEEPIT udata.i |
144 | ||
116c20d2 | 145 | #include <string.h> /* For strchr and friends. */ |
e135f41b NC |
146 | #include "bfd.h" |
147 | #include "sysdep.h" | |
3882b010 | 148 | #include "safe-ctype.h" |
e135f41b NC |
149 | #include "bfdlink.h" |
150 | ||
151 | #include "libaout.h" | |
e135f41b NC |
152 | #include "aout/aout64.h" |
153 | #include "aout/stab_gnu.h" | |
154 | #include "aout/ar.h" | |
155 | ||
156 | #undef N_TYPE | |
157 | #undef N_UNDF | |
158 | #undef N_ABS | |
159 | #undef N_TEXT | |
160 | #undef N_DATA | |
161 | #undef N_BSS | |
162 | #undef N_REG | |
163 | #undef N_FN | |
164 | #undef N_EXT | |
116c20d2 NC |
165 | #define N_TYPE 0x1f /* Type mask. */ |
166 | #define N_UNDF 0x00 /* Undefined. */ | |
167 | #define N_ABS 0x01 /* Absolute. */ | |
168 | #define N_TEXT 0x02 /* Text segment. */ | |
169 | #define N_DATA 0x03 /* Data segment. */ | |
170 | #define N_BSS 0x04 /* Bss segment. */ | |
171 | #define N_REG 0x14 /* Register symbol. */ | |
172 | #define N_FN 0x1f /* File name. */ | |
173 | #define N_EXT 0x20 /* External flag. */ | |
e135f41b NC |
174 | |
175 | #define RELOC_SIZE 2 | |
176 | ||
116c20d2 NC |
177 | #define RELFLG 0x0001 /* PC-relative flag. */ |
178 | #define RTYPE 0x000e /* Type mask. */ | |
179 | #define RIDXMASK 0xfff0 /* Index mask. */ | |
e135f41b | 180 | |
116c20d2 NC |
181 | #define RABS 0x00 /* Absolute. */ |
182 | #define RTEXT 0x02 /* Text. */ | |
183 | #define RDATA 0x04 /* Data. */ | |
184 | #define RBSS 0x06 /* Bss. */ | |
185 | #define REXT 0x08 /* External. */ | |
e135f41b NC |
186 | |
187 | #define RINDEX(x) (((x) & 0xfff0) >> 4) | |
188 | ||
e135f41b NC |
189 | #ifndef MY_final_link_relocate |
190 | #define MY_final_link_relocate _bfd_final_link_relocate | |
191 | #endif | |
192 | ||
193 | #ifndef MY_relocate_contents | |
194 | #define MY_relocate_contents _bfd_relocate_contents | |
195 | #endif | |
196 | ||
116c20d2 NC |
197 | /* A hash table used for header files with N_BINCL entries. */ |
198 | ||
199 | struct aout_link_includes_table | |
200 | { | |
201 | struct bfd_hash_table root; | |
202 | }; | |
203 | ||
204 | /* A linked list of totals that we have found for a particular header | |
205 | file. */ | |
206 | ||
207 | struct aout_link_includes_totals | |
208 | { | |
209 | struct aout_link_includes_totals *next; | |
210 | bfd_vma total; | |
211 | }; | |
212 | ||
213 | /* An entry in the header file hash table. */ | |
214 | ||
215 | struct aout_link_includes_entry | |
216 | { | |
217 | struct bfd_hash_entry root; | |
218 | /* List of totals we have found for this file. */ | |
219 | struct aout_link_includes_totals *totals; | |
220 | }; | |
221 | ||
222 | /* During the final link step we need to pass around a bunch of | |
223 | information, so we do it in an instance of this structure. */ | |
224 | ||
225 | struct aout_final_link_info | |
226 | { | |
227 | /* General link information. */ | |
228 | struct bfd_link_info *info; | |
229 | /* Output bfd. */ | |
230 | bfd *output_bfd; | |
231 | /* Reloc file positions. */ | |
232 | file_ptr treloff, dreloff; | |
233 | /* File position of symbols. */ | |
234 | file_ptr symoff; | |
235 | /* String table. */ | |
236 | struct bfd_strtab_hash *strtab; | |
237 | /* Header file hash table. */ | |
238 | struct aout_link_includes_table includes; | |
239 | /* A buffer large enough to hold the contents of any section. */ | |
240 | bfd_byte *contents; | |
241 | /* A buffer large enough to hold the relocs of any section. */ | |
242 | void * relocs; | |
243 | /* A buffer large enough to hold the symbol map of any input BFD. */ | |
244 | int *symbol_map; | |
245 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
246 | struct external_nlist *output_syms; | |
247 | }; | |
248 | ||
e135f41b NC |
249 | reloc_howto_type howto_table_pdp11[] = |
250 | { | |
251 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ | |
b34976b6 AM |
252 | HOWTO( 0, 0, 1, 16, FALSE, 0, complain_overflow_signed,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE), |
253 | HOWTO( 1, 0, 1, 16, TRUE, 0, complain_overflow_signed,0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE), | |
e135f41b NC |
254 | }; |
255 | ||
256 | #define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0])) | |
257 | ||
116c20d2 NC |
258 | |
259 | static bfd_boolean aout_link_check_archive_element (bfd *, struct bfd_link_info *, bfd_boolean *); | |
260 | static bfd_boolean aout_link_add_object_symbols (bfd *, struct bfd_link_info *); | |
261 | static bfd_boolean aout_link_add_symbols (bfd *, struct bfd_link_info *); | |
262 | static bfd_boolean aout_link_write_symbols (struct aout_final_link_info *, bfd *); | |
263 | ||
264 | ||
e135f41b | 265 | reloc_howto_type * |
116c20d2 NC |
266 | NAME (aout, reloc_type_lookup) (bfd * abfd ATTRIBUTE_UNUSED, |
267 | bfd_reloc_code_real_type code) | |
e135f41b NC |
268 | { |
269 | switch (code) | |
270 | { | |
271 | case BFD_RELOC_16: | |
272 | return &howto_table_pdp11[0]; | |
273 | case BFD_RELOC_16_PCREL: | |
274 | return &howto_table_pdp11[1]; | |
275 | default: | |
116c20d2 | 276 | return NULL; |
e135f41b NC |
277 | } |
278 | } | |
279 | ||
280 | static int | |
116c20d2 | 281 | pdp11_aout_write_headers (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
282 | { |
283 | struct external_exec exec_bytes; | |
284 | bfd_size_type text_size; | |
285 | file_ptr text_end; | |
286 | ||
287 | if (adata(abfd).magic == undecided_magic) | |
116c20d2 | 288 | NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end); |
e135f41b NC |
289 | |
290 | execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; | |
291 | execp->a_entry = bfd_get_start_address (abfd); | |
292 | ||
116c20d2 NC |
293 | if (obj_textsec (abfd)->reloc_count > 0 |
294 | || obj_datasec (abfd)->reloc_count > 0) | |
e135f41b NC |
295 | { |
296 | execp->a_trsize = execp->a_text; | |
297 | execp->a_drsize = execp->a_data; | |
298 | } | |
299 | else | |
300 | { | |
301 | execp->a_trsize = 0; | |
302 | execp->a_drsize = 0; | |
303 | } | |
304 | ||
116c20d2 | 305 | NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); |
e135f41b NC |
306 | |
307 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) | |
b34976b6 | 308 | return FALSE; |
e135f41b | 309 | |
116c20d2 | 310 | if (bfd_bwrite ((void *) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, abfd) |
e135f41b | 311 | != EXEC_BYTES_SIZE) |
b34976b6 | 312 | return FALSE; |
e135f41b | 313 | |
116c20d2 NC |
314 | /* Now write out reloc info, followed by syms and strings. */ |
315 | if (bfd_get_outsymbols (abfd) != NULL | |
e135f41b NC |
316 | && bfd_get_symcount (abfd) != 0) |
317 | { | |
dc810e39 | 318 | if (bfd_seek (abfd, (file_ptr) (N_SYMOFF(*execp)), SEEK_SET) != 0) |
b34976b6 | 319 | return FALSE; |
e135f41b | 320 | |
116c20d2 | 321 | if (! NAME (aout, write_syms) (abfd)) |
b34976b6 | 322 | return FALSE; |
e135f41b NC |
323 | } |
324 | ||
116c20d2 NC |
325 | if (obj_textsec (abfd)->reloc_count > 0 |
326 | || obj_datasec (abfd)->reloc_count > 0) | |
e135f41b | 327 | { |
116c20d2 NC |
328 | if (bfd_seek (abfd, (file_ptr) (N_TRELOFF(*execp)), SEEK_SET) != 0 |
329 | || !NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd)) | |
330 | || bfd_seek (abfd, (file_ptr) (N_DRELOFF(*execp)), SEEK_SET) != 0 | |
331 | || !NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) | |
b34976b6 | 332 | return FALSE; |
e135f41b NC |
333 | } |
334 | ||
b34976b6 | 335 | return TRUE; |
dc810e39 | 336 | } |
e135f41b NC |
337 | |
338 | /* Write an object file. | |
339 | Section contents have already been written. We write the | |
340 | file header, symbols, and relocation. */ | |
341 | ||
b34976b6 | 342 | static bfd_boolean |
116c20d2 | 343 | MY(write_object_contents) (bfd *abfd) |
e135f41b NC |
344 | { |
345 | struct internal_exec *execp = exec_hdr (abfd); | |
346 | ||
347 | /* We must make certain that the magic number has been set. This | |
348 | will normally have been done by set_section_contents, but only if | |
349 | there actually are some section contents. */ | |
350 | if (! abfd->output_has_begun) | |
351 | { | |
352 | bfd_size_type text_size; | |
353 | file_ptr text_end; | |
354 | ||
116c20d2 | 355 | NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end); |
e135f41b NC |
356 | } |
357 | ||
358 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
359 | ||
116c20d2 | 360 | return WRITE_HEADERS (abfd, execp); |
e135f41b NC |
361 | } |
362 | ||
116c20d2 NC |
363 | /* Swap the information in an executable header @var{raw_bytes} taken |
364 | from a raw byte stream memory image into the internal exec header | |
365 | structure "execp". */ | |
e135f41b NC |
366 | |
367 | #ifndef NAME_swap_exec_header_in | |
368 | void | |
116c20d2 NC |
369 | NAME (aout, swap_exec_header_in) (bfd *abfd, |
370 | struct external_exec *bytes, | |
371 | struct internal_exec *execp) | |
e135f41b | 372 | { |
e135f41b NC |
373 | /* The internal_exec structure has some fields that are unused in this |
374 | configuration (IE for i960), so ensure that all such uninitialized | |
375 | fields are zero'd out. There are places where two of these structs | |
116c20d2 NC |
376 | are memcmp'd, and thus the contents do matter. */ |
377 | memset ((void *) execp, 0, sizeof (struct internal_exec)); | |
e135f41b NC |
378 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
379 | execp->a_info = GET_MAGIC (abfd, bytes->e_info); | |
380 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
381 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
382 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
383 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
384 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
385 | ||
386 | if (GET_WORD (abfd, bytes->e_flag) & A_FLAG_RELOC_STRIPPED) | |
387 | { | |
388 | execp->a_trsize = 0; | |
389 | execp->a_drsize = 0; | |
390 | } | |
391 | else | |
392 | { | |
393 | execp->a_trsize = execp->a_text; | |
394 | execp->a_drsize = execp->a_data; | |
395 | } | |
396 | } | |
116c20d2 | 397 | #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in) |
e135f41b NC |
398 | #endif |
399 | ||
116c20d2 NC |
400 | /* Swap the information in an internal exec header structure |
401 | "execp" into the buffer "bytes" ready for writing to disk. */ | |
e135f41b | 402 | void |
116c20d2 NC |
403 | NAME (aout, swap_exec_header_out) (bfd *abfd, |
404 | struct internal_exec *execp, | |
405 | struct external_exec *bytes) | |
e135f41b | 406 | { |
116c20d2 | 407 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ |
e135f41b NC |
408 | PUT_MAGIC (abfd, execp->a_info, bytes->e_info); |
409 | PUT_WORD (abfd, execp->a_text, bytes->e_text); | |
410 | PUT_WORD (abfd, execp->a_data, bytes->e_data); | |
411 | PUT_WORD (abfd, execp->a_bss, bytes->e_bss); | |
412 | PUT_WORD (abfd, execp->a_syms, bytes->e_syms); | |
413 | PUT_WORD (abfd, execp->a_entry, bytes->e_entry); | |
414 | PUT_WORD (abfd, 0, bytes->e_unused); | |
415 | ||
116c20d2 NC |
416 | if ((execp->a_trsize == 0 || execp->a_text == 0) |
417 | && (execp->a_drsize == 0 || execp->a_data == 0)) | |
418 | PUT_WORD (abfd, A_FLAG_RELOC_STRIPPED, bytes->e_flag); | |
419 | else if (execp->a_trsize == execp->a_text | |
420 | && execp->a_drsize == execp->a_data) | |
421 | PUT_WORD (abfd, 0, bytes->e_flag); | |
e135f41b NC |
422 | else |
423 | { | |
116c20d2 | 424 | /* TODO: print a proper warning message. */ |
e135f41b NC |
425 | fprintf (stderr, "BFD:%s:%d: internal error\n", __FILE__, __LINE__); |
426 | PUT_WORD (abfd, 0, bytes->e_flag); | |
427 | } | |
428 | } | |
429 | ||
430 | /* Make all the section for an a.out file. */ | |
431 | ||
b34976b6 | 432 | bfd_boolean |
116c20d2 | 433 | NAME (aout, make_sections) (bfd *abfd) |
e135f41b | 434 | { |
116c20d2 | 435 | if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL) |
b34976b6 | 436 | return FALSE; |
116c20d2 | 437 | if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL) |
b34976b6 | 438 | return FALSE; |
116c20d2 | 439 | if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL) |
b34976b6 AM |
440 | return FALSE; |
441 | return TRUE; | |
e135f41b NC |
442 | } |
443 | ||
116c20d2 NC |
444 | /* Some a.out variant thinks that the file open in ABFD |
445 | checking is an a.out file. Do some more checking, and set up | |
446 | for access if it really is. Call back to the calling | |
447 | environment's "finish up" function just before returning, to | |
448 | handle any last-minute setup. */ | |
e135f41b NC |
449 | |
450 | const bfd_target * | |
116c20d2 NC |
451 | NAME (aout, some_aout_object_p) (bfd *abfd, |
452 | struct internal_exec *execp, | |
453 | const bfd_target *(*callback_to_real_object_p) (bfd *)) | |
e135f41b NC |
454 | { |
455 | struct aout_data_struct *rawptr, *oldrawptr; | |
456 | const bfd_target *result; | |
dc810e39 | 457 | bfd_size_type amt = sizeof (struct aout_data_struct); |
e135f41b | 458 | |
116c20d2 | 459 | rawptr = bfd_zalloc (abfd, amt); |
e135f41b NC |
460 | if (rawptr == NULL) |
461 | return 0; | |
462 | ||
463 | oldrawptr = abfd->tdata.aout_data; | |
464 | abfd->tdata.aout_data = rawptr; | |
465 | ||
466 | /* Copy the contents of the old tdata struct. | |
467 | In particular, we want the subformat, since for hpux it was set in | |
468 | hp300hpux.c:swap_exec_header_in and will be used in | |
469 | hp300hpux.c:callback. */ | |
470 | if (oldrawptr != NULL) | |
471 | *abfd->tdata.aout_data = *oldrawptr; | |
472 | ||
473 | abfd->tdata.aout_data->a.hdr = &rawptr->e; | |
116c20d2 | 474 | *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct. */ |
e135f41b NC |
475 | execp = abfd->tdata.aout_data->a.hdr; |
476 | ||
116c20d2 | 477 | /* Set the file flags. */ |
e135f41b NC |
478 | abfd->flags = BFD_NO_FLAGS; |
479 | if (execp->a_drsize || execp->a_trsize) | |
480 | abfd->flags |= HAS_RELOC; | |
116c20d2 | 481 | /* Setting of EXEC_P has been deferred to the bottom of this function. */ |
e135f41b NC |
482 | if (execp->a_syms) |
483 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
484 | if (N_DYNAMIC(*execp)) | |
485 | abfd->flags |= DYNAMIC; | |
486 | ||
487 | if (N_MAGIC (*execp) == ZMAGIC) | |
488 | { | |
489 | abfd->flags |= D_PAGED | WP_TEXT; | |
490 | adata (abfd).magic = z_magic; | |
491 | } | |
492 | else if (N_MAGIC (*execp) == QMAGIC) | |
493 | { | |
494 | abfd->flags |= D_PAGED | WP_TEXT; | |
495 | adata (abfd).magic = z_magic; | |
496 | adata (abfd).subformat = q_magic_format; | |
497 | } | |
498 | else if (N_MAGIC (*execp) == NMAGIC) | |
499 | { | |
500 | abfd->flags |= WP_TEXT; | |
501 | adata (abfd).magic = n_magic; | |
502 | } | |
503 | else if (N_MAGIC (*execp) == OMAGIC | |
504 | || N_MAGIC (*execp) == BMAGIC) | |
505 | adata (abfd).magic = o_magic; | |
506 | else | |
507 | { | |
508 | /* Should have been checked with N_BADMAG before this routine | |
509 | was called. */ | |
510 | abort (); | |
511 | } | |
512 | ||
513 | bfd_get_start_address (abfd) = execp->a_entry; | |
514 | ||
116c20d2 | 515 | obj_aout_symbols (abfd) = NULL; |
e135f41b NC |
516 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); |
517 | ||
518 | /* The default relocation entry size is that of traditional V7 Unix. */ | |
519 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
520 | ||
116c20d2 | 521 | /* The default symbol entry size is that of traditional Unix. */ |
e135f41b NC |
522 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; |
523 | ||
524 | #ifdef USE_MMAP | |
525 | bfd_init_window (&obj_aout_sym_window (abfd)); | |
526 | bfd_init_window (&obj_aout_string_window (abfd)); | |
527 | #endif | |
116c20d2 | 528 | |
e135f41b NC |
529 | obj_aout_external_syms (abfd) = NULL; |
530 | obj_aout_external_strings (abfd) = NULL; | |
531 | obj_aout_sym_hashes (abfd) = NULL; | |
532 | ||
116c20d2 | 533 | if (! NAME (aout, make_sections) (abfd)) |
e135f41b NC |
534 | return NULL; |
535 | ||
eea6121a AM |
536 | obj_datasec (abfd)->size = execp->a_data; |
537 | obj_bsssec (abfd)->size = execp->a_bss; | |
e135f41b NC |
538 | |
539 | obj_textsec (abfd)->flags = | |
540 | (execp->a_trsize != 0 | |
541 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) | |
542 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
543 | obj_datasec (abfd)->flags = | |
544 | (execp->a_drsize != 0 | |
545 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) | |
546 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
547 | obj_bsssec (abfd)->flags = SEC_ALLOC; | |
548 | ||
549 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
550 | /* The common code can't fill in these things because they depend | |
551 | on either the start address of the text segment, the rounding | |
552 | up of virtual addresses between segments, or the starting file | |
553 | position of the text segment -- all of which varies among different | |
554 | versions of a.out. */ | |
555 | ||
556 | /* Call back to the format-dependent code to fill in the rest of the | |
557 | fields and do any further cleanup. Things that should be filled | |
558 | in by the callback: */ | |
e135f41b NC |
559 | struct exec *execp = exec_hdr (abfd); |
560 | ||
561 | obj_textsec (abfd)->size = N_TXTSIZE(*execp); | |
116c20d2 | 562 | /* Data and bss are already filled in since they're so standard. */ |
e135f41b | 563 | |
116c20d2 | 564 | /* The virtual memory addresses of the sections. */ |
e135f41b NC |
565 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); |
566 | obj_datasec (abfd)->vma = N_DATADDR(*execp); | |
567 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
568 | ||
116c20d2 | 569 | /* The file offsets of the sections. */ |
e135f41b NC |
570 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); |
571 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); | |
572 | ||
116c20d2 | 573 | /* The file offsets of the relocation info. */ |
e135f41b NC |
574 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); |
575 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
576 | ||
577 | /* The file offsets of the string table and symbol table. */ | |
578 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
579 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
580 | ||
581 | /* Determine the architecture and machine type of the object file. */ | |
582 | abfd->obj_arch = bfd_arch_obscure; | |
583 | ||
584 | adata(abfd)->page_size = TARGET_PAGE_SIZE; | |
585 | adata(abfd)->segment_size = SEGMENT_SIZE; | |
586 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
587 | ||
588 | return abfd->xvec; | |
589 | ||
590 | /* The architecture is encoded in various ways in various a.out variants, | |
591 | or is not encoded at all in some of them. The relocation size depends | |
592 | on the architecture and the a.out variant. Finally, the return value | |
593 | is the bfd_target vector in use. If an error occurs, return zero and | |
594 | set bfd_error to the appropriate error code. | |
595 | ||
596 | Formats such as b.out, which have additional fields in the a.out | |
597 | header, should cope with them in this callback as well. */ | |
116c20d2 | 598 | #endif /* DOCUMENTATION */ |
e135f41b NC |
599 | |
600 | result = (*callback_to_real_object_p)(abfd); | |
601 | ||
602 | /* Now that the segment addresses have been worked out, take a better | |
603 | guess at whether the file is executable. If the entry point | |
604 | is within the text segment, assume it is. (This makes files | |
605 | executable even if their entry point address is 0, as long as | |
606 | their text starts at zero.). | |
607 | ||
608 | This test had to be changed to deal with systems where the text segment | |
609 | runs at a different location than the default. The problem is that the | |
610 | entry address can appear to be outside the text segment, thus causing an | |
611 | erroneous conclusion that the file isn't executable. | |
612 | ||
613 | To fix this, we now accept any non-zero entry point as an indication of | |
614 | executability. This will work most of the time, since only the linker | |
615 | sets the entry point, and that is likely to be non-zero for most systems. */ | |
616 | ||
617 | if (execp->a_entry != 0 | |
618 | || (execp->a_entry >= obj_textsec(abfd)->vma | |
eea6121a | 619 | && execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->size)) |
e135f41b NC |
620 | abfd->flags |= EXEC_P; |
621 | #ifdef STAT_FOR_EXEC | |
622 | else | |
623 | { | |
624 | struct stat stat_buf; | |
625 | ||
626 | /* The original heuristic doesn't work in some important cases. | |
627 | The a.out file has no information about the text start | |
628 | address. For files (like kernels) linked to non-standard | |
629 | addresses (ld -Ttext nnn) the entry point may not be between | |
630 | the default text start (obj_textsec(abfd)->vma) and | |
631 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
632 | issue. Many kernels are loaded at non standard addresses. */ | |
633 | if (abfd->iostream != NULL | |
634 | && (abfd->flags & BFD_IN_MEMORY) == 0 | |
635 | && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0) | |
636 | && ((stat_buf.st_mode & 0111) != 0)) | |
637 | abfd->flags |= EXEC_P; | |
638 | } | |
639 | #endif /* STAT_FOR_EXEC */ | |
640 | ||
0e71e495 | 641 | if (!result) |
e135f41b NC |
642 | { |
643 | free (rawptr); | |
644 | abfd->tdata.aout_data = oldrawptr; | |
645 | } | |
646 | return result; | |
647 | } | |
648 | ||
116c20d2 | 649 | /* Initialize ABFD for use with a.out files. */ |
e135f41b | 650 | |
b34976b6 | 651 | bfd_boolean |
116c20d2 | 652 | NAME (aout, mkobject) (bfd *abfd) |
e135f41b NC |
653 | { |
654 | struct aout_data_struct *rawptr; | |
dc810e39 | 655 | bfd_size_type amt = sizeof (struct aout_data_struct); |
e135f41b NC |
656 | |
657 | bfd_set_error (bfd_error_system_call); | |
658 | ||
116c20d2 NC |
659 | /* Use an intermediate variable for clarity. */ |
660 | rawptr = bfd_zalloc (abfd, amt); | |
e135f41b NC |
661 | |
662 | if (rawptr == NULL) | |
b34976b6 | 663 | return FALSE; |
e135f41b NC |
664 | |
665 | abfd->tdata.aout_data = rawptr; | |
666 | exec_hdr (abfd) = &(rawptr->e); | |
667 | ||
116c20d2 NC |
668 | obj_textsec (abfd) = NULL; |
669 | obj_datasec (abfd) = NULL; | |
670 | obj_bsssec (abfd) = NULL; | |
e135f41b | 671 | |
b34976b6 | 672 | return TRUE; |
e135f41b NC |
673 | } |
674 | ||
116c20d2 NC |
675 | /* Keep track of machine architecture and machine type for |
676 | a.out's. Return the <<machine_type>> for a particular | |
677 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
678 | and machine can't be represented in a.out format. | |
e135f41b | 679 | |
116c20d2 NC |
680 | If the architecture is understood, machine type 0 (default) |
681 | is always understood. */ | |
e135f41b NC |
682 | |
683 | enum machine_type | |
116c20d2 NC |
684 | NAME (aout, machine_type) (enum bfd_architecture arch, |
685 | unsigned long machine, | |
686 | bfd_boolean *unknown) | |
e135f41b NC |
687 | { |
688 | enum machine_type arch_flags; | |
689 | ||
690 | arch_flags = M_UNKNOWN; | |
b34976b6 | 691 | *unknown = TRUE; |
e135f41b NC |
692 | |
693 | switch (arch) | |
694 | { | |
695 | case bfd_arch_sparc: | |
696 | if (machine == 0 | |
697 | || machine == bfd_mach_sparc | |
698 | || machine == bfd_mach_sparc_sparclite | |
699 | || machine == bfd_mach_sparc_v9) | |
700 | arch_flags = M_SPARC; | |
701 | else if (machine == bfd_mach_sparc_sparclet) | |
702 | arch_flags = M_SPARCLET; | |
703 | break; | |
704 | ||
705 | case bfd_arch_m68k: | |
706 | switch (machine) | |
707 | { | |
708 | case 0: arch_flags = M_68010; break; | |
b34976b6 | 709 | case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = FALSE; break; |
e135f41b NC |
710 | case bfd_mach_m68010: arch_flags = M_68010; break; |
711 | case bfd_mach_m68020: arch_flags = M_68020; break; | |
712 | default: arch_flags = M_UNKNOWN; break; | |
713 | } | |
714 | break; | |
715 | ||
716 | case bfd_arch_i386: | |
250d94fd AM |
717 | if (machine == 0 |
718 | || machine == bfd_mach_i386_i386 | |
719 | || machine == bfd_mach_i386_i386_intel_syntax) | |
720 | arch_flags = M_386; | |
e135f41b NC |
721 | break; |
722 | ||
e135f41b NC |
723 | case bfd_arch_arm: |
724 | if (machine == 0) arch_flags = M_ARM; | |
725 | break; | |
726 | ||
727 | case bfd_arch_mips: | |
728 | switch (machine) | |
729 | { | |
730 | case 0: | |
731 | case 2000: | |
732 | case bfd_mach_mips3000: | |
733 | arch_flags = M_MIPS1; | |
734 | break; | |
116c20d2 | 735 | case bfd_mach_mips4000: /* MIPS3 */ |
e135f41b | 736 | case bfd_mach_mips4400: |
116c20d2 NC |
737 | case bfd_mach_mips8000: /* MIPS4 */ |
738 | case bfd_mach_mips6000: /* Real MIPS2: */ | |
e135f41b NC |
739 | arch_flags = M_MIPS2; |
740 | break; | |
741 | default: | |
742 | arch_flags = M_UNKNOWN; | |
743 | break; | |
744 | } | |
745 | break; | |
746 | ||
747 | case bfd_arch_ns32k: | |
748 | switch (machine) | |
749 | { | |
750 | case 0: arch_flags = M_NS32532; break; | |
751 | case 32032: arch_flags = M_NS32032; break; | |
752 | case 32532: arch_flags = M_NS32532; break; | |
753 | default: arch_flags = M_UNKNOWN; break; | |
754 | } | |
755 | break; | |
756 | ||
757 | case bfd_arch_pdp11: | |
758 | /* TODO: arch_flags = M_PDP11; */ | |
b34976b6 | 759 | *unknown = FALSE; |
e135f41b NC |
760 | break; |
761 | ||
762 | case bfd_arch_vax: | |
b34976b6 | 763 | *unknown = FALSE; |
e135f41b | 764 | break; |
dc810e39 | 765 | |
e135f41b NC |
766 | default: |
767 | arch_flags = M_UNKNOWN; | |
768 | } | |
769 | ||
770 | if (arch_flags != M_UNKNOWN) | |
b34976b6 | 771 | *unknown = FALSE; |
e135f41b NC |
772 | |
773 | return arch_flags; | |
774 | } | |
775 | ||
116c20d2 NC |
776 | /* Set the architecture and the machine of the ABFD to the |
777 | values ARCH and MACHINE. Verify that @ABFD's format | |
778 | can support the architecture required. */ | |
e135f41b | 779 | |
b34976b6 | 780 | bfd_boolean |
116c20d2 NC |
781 | NAME (aout, set_arch_mach) (bfd *abfd, |
782 | enum bfd_architecture arch, | |
783 | unsigned long machine) | |
e135f41b NC |
784 | { |
785 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) | |
b34976b6 | 786 | return FALSE; |
e135f41b NC |
787 | |
788 | if (arch != bfd_arch_unknown) | |
789 | { | |
b34976b6 | 790 | bfd_boolean unknown; |
e135f41b | 791 | |
116c20d2 | 792 | NAME (aout, machine_type) (arch, machine, &unknown); |
e135f41b | 793 | if (unknown) |
b34976b6 | 794 | return FALSE; |
e135f41b NC |
795 | } |
796 | ||
797 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
798 | ||
799 | return (*aout_backend_info(abfd)->set_sizes) (abfd); | |
800 | } | |
801 | ||
802 | static void | |
116c20d2 | 803 | adjust_o_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
804 | { |
805 | file_ptr pos = adata (abfd).exec_bytes_size; | |
806 | bfd_vma vma = 0; | |
807 | int pad = 0; | |
808 | ||
809 | /* Text. */ | |
810 | obj_textsec (abfd)->filepos = pos; | |
811 | if (! obj_textsec (abfd)->user_set_vma) | |
812 | obj_textsec (abfd)->vma = vma; | |
813 | else | |
814 | vma = obj_textsec (abfd)->vma; | |
815 | ||
eea6121a AM |
816 | pos += obj_textsec (abfd)->size; |
817 | vma += obj_textsec (abfd)->size; | |
e135f41b NC |
818 | |
819 | /* Data. */ | |
820 | if (!obj_datasec (abfd)->user_set_vma) | |
821 | { | |
eea6121a | 822 | obj_textsec (abfd)->size += pad; |
e135f41b NC |
823 | pos += pad; |
824 | vma += pad; | |
825 | obj_datasec (abfd)->vma = vma; | |
826 | } | |
827 | else | |
828 | vma = obj_datasec (abfd)->vma; | |
829 | obj_datasec (abfd)->filepos = pos; | |
eea6121a AM |
830 | pos += obj_datasec (abfd)->size; |
831 | vma += obj_datasec (abfd)->size; | |
e135f41b NC |
832 | |
833 | /* BSS. */ | |
834 | if (! obj_bsssec (abfd)->user_set_vma) | |
835 | { | |
eea6121a | 836 | obj_datasec (abfd)->size += pad; |
e135f41b NC |
837 | pos += pad; |
838 | vma += pad; | |
839 | obj_bsssec (abfd)->vma = vma; | |
840 | } | |
841 | else | |
842 | { | |
08da05b0 | 843 | /* The VMA of the .bss section is set by the VMA of the |
e135f41b NC |
844 | .data section plus the size of the .data section. We may |
845 | need to add padding bytes to make this true. */ | |
846 | pad = obj_bsssec (abfd)->vma - vma; | |
847 | if (pad > 0) | |
848 | { | |
eea6121a | 849 | obj_datasec (abfd)->size += pad; |
e135f41b NC |
850 | pos += pad; |
851 | } | |
852 | } | |
853 | obj_bsssec (abfd)->filepos = pos; | |
854 | ||
855 | /* Fix up the exec header. */ | |
eea6121a AM |
856 | execp->a_text = obj_textsec (abfd)->size; |
857 | execp->a_data = obj_datasec (abfd)->size; | |
858 | execp->a_bss = obj_bsssec (abfd)->size; | |
e135f41b NC |
859 | N_SET_MAGIC (*execp, OMAGIC); |
860 | } | |
861 | ||
862 | static void | |
116c20d2 | 863 | adjust_z_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
864 | { |
865 | bfd_size_type data_pad, text_pad; | |
866 | file_ptr text_end; | |
dc810e39 | 867 | const struct aout_backend_data *abdp; |
e135f41b | 868 | int ztih; /* Nonzero if text includes exec header. */ |
dc810e39 | 869 | |
e135f41b NC |
870 | abdp = aout_backend_info (abfd); |
871 | ||
872 | /* Text. */ | |
873 | ztih = (abdp != NULL | |
874 | && (abdp->text_includes_header | |
875 | || obj_aout_subformat (abfd) == q_magic_format)); | |
876 | obj_textsec(abfd)->filepos = (ztih | |
877 | ? adata(abfd).exec_bytes_size | |
878 | : adata(abfd).zmagic_disk_block_size); | |
879 | if (! obj_textsec(abfd)->user_set_vma) | |
880 | { | |
881 | /* ?? Do we really need to check for relocs here? */ | |
882 | obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC) | |
883 | ? 0 | |
884 | : (ztih | |
885 | ? (abdp->default_text_vma | |
886 | + adata (abfd).exec_bytes_size) | |
887 | : abdp->default_text_vma)); | |
888 | text_pad = 0; | |
889 | } | |
890 | else | |
891 | { | |
892 | /* The .text section is being loaded at an unusual address. We | |
893 | may need to pad it such that the .data section starts at a page | |
894 | boundary. */ | |
895 | if (ztih) | |
896 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
897 | & (adata (abfd).page_size - 1)); | |
898 | else | |
899 | text_pad = ((- obj_textsec (abfd)->vma) | |
900 | & (adata (abfd).page_size - 1)); | |
901 | } | |
902 | ||
903 | /* Find start of data. */ | |
904 | if (ztih) | |
905 | { | |
eea6121a | 906 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size; |
e135f41b NC |
907 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
908 | } | |
909 | else | |
910 | { | |
911 | /* Note that if page_size == zmagic_disk_block_size, then | |
912 | filepos == page_size, and this case is the same as the ztih | |
913 | case. */ | |
eea6121a | 914 | text_end = obj_textsec (abfd)->size; |
e135f41b NC |
915 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
916 | text_end += obj_textsec (abfd)->filepos; | |
917 | } | |
918 | ||
eea6121a | 919 | obj_textsec (abfd)->size += text_pad; |
e135f41b NC |
920 | text_end += text_pad; |
921 | ||
922 | /* Data. */ | |
923 | if (!obj_datasec(abfd)->user_set_vma) | |
924 | { | |
925 | bfd_vma vma; | |
eea6121a | 926 | vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->size; |
e135f41b NC |
927 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); |
928 | } | |
929 | if (abdp && abdp->zmagic_mapped_contiguous) | |
930 | { | |
931 | text_pad = (obj_datasec(abfd)->vma | |
932 | - obj_textsec(abfd)->vma | |
eea6121a AM |
933 | - obj_textsec(abfd)->size); |
934 | obj_textsec(abfd)->size += text_pad; | |
e135f41b NC |
935 | } |
936 | obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos | |
eea6121a | 937 | + obj_textsec (abfd)->size); |
dc810e39 | 938 | |
e135f41b | 939 | /* Fix up exec header while we're at it. */ |
eea6121a | 940 | execp->a_text = obj_textsec(abfd)->size; |
e135f41b NC |
941 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
942 | execp->a_text += adata(abfd).exec_bytes_size; | |
943 | if (obj_aout_subformat (abfd) == q_magic_format) | |
944 | N_SET_MAGIC (*execp, QMAGIC); | |
945 | else | |
946 | N_SET_MAGIC (*execp, ZMAGIC); | |
947 | ||
948 | /* Spec says data section should be rounded up to page boundary. */ | |
eea6121a AM |
949 | obj_datasec(abfd)->size |
950 | = align_power (obj_datasec(abfd)->size, | |
e135f41b | 951 | obj_bsssec(abfd)->alignment_power); |
eea6121a | 952 | execp->a_data = BFD_ALIGN (obj_datasec(abfd)->size, |
e135f41b | 953 | adata(abfd).page_size); |
eea6121a | 954 | data_pad = execp->a_data - obj_datasec(abfd)->size; |
e135f41b NC |
955 | |
956 | /* BSS. */ | |
957 | if (!obj_bsssec(abfd)->user_set_vma) | |
958 | obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma | |
eea6121a | 959 | + obj_datasec(abfd)->size); |
e135f41b NC |
960 | /* If the BSS immediately follows the data section and extra space |
961 | in the page is left after the data section, fudge data | |
962 | in the header so that the bss section looks smaller by that | |
963 | amount. We'll start the bss section there, and lie to the OS. | |
964 | (Note that a linker script, as well as the above assignment, | |
965 | could have explicitly set the BSS vma to immediately follow | |
966 | the data section.) */ | |
967 | if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power) | |
eea6121a AM |
968 | == obj_datasec(abfd)->vma + obj_datasec(abfd)->size) |
969 | execp->a_bss = (data_pad > obj_bsssec(abfd)->size) ? 0 : | |
970 | obj_bsssec(abfd)->size - data_pad; | |
e135f41b | 971 | else |
eea6121a | 972 | execp->a_bss = obj_bsssec(abfd)->size; |
e135f41b NC |
973 | } |
974 | ||
975 | static void | |
116c20d2 | 976 | adjust_n_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
977 | { |
978 | file_ptr pos = adata(abfd).exec_bytes_size; | |
979 | bfd_vma vma = 0; | |
980 | int pad; | |
dc810e39 | 981 | |
e135f41b NC |
982 | /* Text. */ |
983 | obj_textsec(abfd)->filepos = pos; | |
984 | if (!obj_textsec(abfd)->user_set_vma) | |
985 | obj_textsec(abfd)->vma = vma; | |
986 | else | |
987 | vma = obj_textsec(abfd)->vma; | |
eea6121a AM |
988 | pos += obj_textsec(abfd)->size; |
989 | vma += obj_textsec(abfd)->size; | |
e135f41b NC |
990 | |
991 | /* Data. */ | |
992 | obj_datasec(abfd)->filepos = pos; | |
993 | if (!obj_datasec(abfd)->user_set_vma) | |
994 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
995 | vma = obj_datasec(abfd)->vma; | |
dc810e39 | 996 | |
e135f41b | 997 | /* Since BSS follows data immediately, see if it needs alignment. */ |
eea6121a | 998 | vma += obj_datasec(abfd)->size; |
e135f41b | 999 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; |
eea6121a AM |
1000 | obj_datasec(abfd)->size += pad; |
1001 | pos += obj_datasec(abfd)->size; | |
e135f41b NC |
1002 | |
1003 | /* BSS. */ | |
1004 | if (!obj_bsssec(abfd)->user_set_vma) | |
1005 | obj_bsssec(abfd)->vma = vma; | |
1006 | else | |
1007 | vma = obj_bsssec(abfd)->vma; | |
1008 | ||
1009 | /* Fix up exec header. */ | |
eea6121a AM |
1010 | execp->a_text = obj_textsec(abfd)->size; |
1011 | execp->a_data = obj_datasec(abfd)->size; | |
1012 | execp->a_bss = obj_bsssec(abfd)->size; | |
e135f41b NC |
1013 | N_SET_MAGIC (*execp, NMAGIC); |
1014 | } | |
1015 | ||
b34976b6 | 1016 | bfd_boolean |
116c20d2 NC |
1017 | NAME (aout, adjust_sizes_and_vmas) (bfd *abfd, |
1018 | bfd_size_type *text_size, | |
1019 | file_ptr * text_end ATTRIBUTE_UNUSED) | |
e135f41b NC |
1020 | { |
1021 | struct internal_exec *execp = exec_hdr (abfd); | |
1022 | ||
116c20d2 | 1023 | if (! NAME (aout, make_sections) (abfd)) |
b34976b6 | 1024 | return FALSE; |
e135f41b NC |
1025 | |
1026 | if (adata(abfd).magic != undecided_magic) | |
b34976b6 | 1027 | return TRUE; |
e135f41b | 1028 | |
eea6121a AM |
1029 | obj_textsec(abfd)->size = |
1030 | align_power(obj_textsec(abfd)->size, | |
e135f41b NC |
1031 | obj_textsec(abfd)->alignment_power); |
1032 | ||
eea6121a | 1033 | *text_size = obj_textsec (abfd)->size; |
e135f41b NC |
1034 | /* Rule (heuristic) for when to pad to a new page. Note that there |
1035 | are (at least) two ways demand-paged (ZMAGIC) files have been | |
1036 | handled. Most Berkeley-based systems start the text segment at | |
1037 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text | |
1038 | segment right after the exec header; the latter is counted in the | |
1039 | text segment size, and is paged in by the kernel with the rest of | |
1040 | the text. */ | |
1041 | ||
1042 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1043 | to understand enough to implement it. Better would probably be to go | |
1044 | right from BFD flags to alignment/positioning characteristics. But the | |
1045 | old code was sloppy enough about handling the flags, and had enough | |
1046 | other magic, that it was a little hard for me to understand. I think | |
1047 | I understand it better now, but I haven't time to do the cleanup this | |
1048 | minute. */ | |
1049 | ||
1050 | if (abfd->flags & WP_TEXT) | |
1051 | adata(abfd).magic = n_magic; | |
1052 | else | |
1053 | adata(abfd).magic = o_magic; | |
1054 | ||
1055 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1056 | #if __GNUC__ >= 2 | |
1057 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1058 | ({ char *str; | |
1059 | switch (adata(abfd).magic) { | |
1060 | case n_magic: str = "NMAGIC"; break; | |
1061 | case o_magic: str = "OMAGIC"; break; | |
1062 | case z_magic: str = "ZMAGIC"; break; | |
1063 | default: abort (); | |
1064 | } | |
1065 | str; | |
1066 | }), | |
eea6121a | 1067 | obj_textsec(abfd)->vma, obj_textsec(abfd)->size, |
e135f41b | 1068 | obj_textsec(abfd)->alignment_power, |
eea6121a | 1069 | obj_datasec(abfd)->vma, obj_datasec(abfd)->size, |
e135f41b | 1070 | obj_datasec(abfd)->alignment_power, |
eea6121a | 1071 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->size, |
e135f41b NC |
1072 | obj_bsssec(abfd)->alignment_power); |
1073 | #endif | |
1074 | #endif | |
1075 | ||
1076 | switch (adata(abfd).magic) | |
1077 | { | |
1078 | case o_magic: | |
1079 | adjust_o_magic (abfd, execp); | |
1080 | break; | |
1081 | case z_magic: | |
1082 | adjust_z_magic (abfd, execp); | |
1083 | break; | |
1084 | case n_magic: | |
1085 | adjust_n_magic (abfd, execp); | |
1086 | break; | |
1087 | default: | |
1088 | abort (); | |
1089 | } | |
1090 | ||
1091 | #ifdef BFD_AOUT_DEBUG | |
1092 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
eea6121a | 1093 | obj_textsec(abfd)->vma, obj_textsec(abfd)->size, |
e135f41b | 1094 | obj_textsec(abfd)->filepos, |
eea6121a | 1095 | obj_datasec(abfd)->vma, obj_datasec(abfd)->size, |
e135f41b | 1096 | obj_datasec(abfd)->filepos, |
eea6121a | 1097 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->size); |
e135f41b NC |
1098 | #endif |
1099 | ||
b34976b6 | 1100 | return TRUE; |
e135f41b NC |
1101 | } |
1102 | ||
116c20d2 | 1103 | /* Called by the BFD in response to a bfd_make_section request. */ |
e135f41b | 1104 | |
b34976b6 | 1105 | bfd_boolean |
116c20d2 | 1106 | NAME (aout, new_section_hook) (bfd *abfd, asection *newsect) |
e135f41b | 1107 | { |
116c20d2 | 1108 | /* Align to double at least. */ |
e135f41b NC |
1109 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; |
1110 | ||
e135f41b NC |
1111 | if (bfd_get_format (abfd) == bfd_object) |
1112 | { | |
1113 | if (obj_textsec (abfd) == NULL | |
1114 | && ! strcmp (newsect->name, ".text")) | |
1115 | { | |
1116 | obj_textsec(abfd)= newsect; | |
1117 | newsect->target_index = N_TEXT; | |
b34976b6 | 1118 | return TRUE; |
e135f41b NC |
1119 | } |
1120 | ||
1121 | if (obj_datasec (abfd) == NULL | |
1122 | && ! strcmp (newsect->name, ".data")) | |
1123 | { | |
1124 | obj_datasec (abfd) = newsect; | |
1125 | newsect->target_index = N_DATA; | |
b34976b6 | 1126 | return TRUE; |
e135f41b NC |
1127 | } |
1128 | ||
1129 | if (obj_bsssec (abfd) == NULL | |
1130 | && !strcmp (newsect->name, ".bss")) | |
1131 | { | |
1132 | obj_bsssec (abfd) = newsect; | |
1133 | newsect->target_index = N_BSS; | |
b34976b6 | 1134 | return TRUE; |
e135f41b NC |
1135 | } |
1136 | } | |
1137 | ||
116c20d2 | 1138 | /* We allow more than three sections internally. */ |
b34976b6 | 1139 | return TRUE; |
e135f41b NC |
1140 | } |
1141 | ||
b34976b6 | 1142 | bfd_boolean |
116c20d2 NC |
1143 | NAME (aout, set_section_contents) (bfd *abfd, |
1144 | sec_ptr section, | |
1145 | const void * location, | |
1146 | file_ptr offset, | |
1147 | bfd_size_type count) | |
e135f41b NC |
1148 | { |
1149 | file_ptr text_end; | |
1150 | bfd_size_type text_size; | |
1151 | ||
1152 | if (! abfd->output_has_begun) | |
1153 | { | |
116c20d2 | 1154 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd, & text_size, & text_end)) |
b34976b6 | 1155 | return FALSE; |
e135f41b NC |
1156 | } |
1157 | ||
1158 | if (section == obj_bsssec (abfd)) | |
1159 | { | |
1160 | bfd_set_error (bfd_error_no_contents); | |
b34976b6 | 1161 | return FALSE; |
e135f41b NC |
1162 | } |
1163 | ||
1164 | if (section != obj_textsec (abfd) | |
1165 | && section != obj_datasec (abfd)) | |
1166 | { | |
1167 | (*_bfd_error_handler) | |
1168 | ("%s: can not represent section `%s' in a.out object file format", | |
1169 | bfd_get_filename (abfd), bfd_get_section_name (abfd, section)); | |
1170 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 1171 | return FALSE; |
e135f41b NC |
1172 | } |
1173 | ||
1174 | if (count != 0) | |
1175 | { | |
1176 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 1177 | || bfd_bwrite (location, count, abfd) != count) |
b34976b6 | 1178 | return FALSE; |
e135f41b NC |
1179 | } |
1180 | ||
b34976b6 | 1181 | return TRUE; |
e135f41b NC |
1182 | } |
1183 | \f | |
1184 | /* Read the external symbols from an a.out file. */ | |
1185 | ||
b34976b6 | 1186 | static bfd_boolean |
116c20d2 | 1187 | aout_get_external_symbols (bfd *abfd) |
e135f41b | 1188 | { |
116c20d2 | 1189 | if (obj_aout_external_syms (abfd) == NULL) |
e135f41b NC |
1190 | { |
1191 | bfd_size_type count; | |
1192 | struct external_nlist *syms; | |
1193 | ||
1194 | count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; | |
1195 | ||
1196 | #ifdef USE_MMAP | |
82e51918 AM |
1197 | if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), |
1198 | exec_hdr (abfd)->a_syms, | |
b34976b6 AM |
1199 | &obj_aout_sym_window (abfd), TRUE)) |
1200 | return FALSE; | |
e135f41b NC |
1201 | syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; |
1202 | #else | |
1203 | /* We allocate using malloc to make the values easy to free | |
1204 | later on. If we put them on the objalloc it might not be | |
1205 | possible to free them. */ | |
116c20d2 NC |
1206 | syms = bfd_malloc (count * EXTERNAL_NLIST_SIZE); |
1207 | if (syms == NULL && count != 0) | |
b34976b6 | 1208 | return FALSE; |
e135f41b NC |
1209 | |
1210 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
dc810e39 | 1211 | || (bfd_bread (syms, exec_hdr (abfd)->a_syms, abfd) |
e135f41b NC |
1212 | != exec_hdr (abfd)->a_syms)) |
1213 | { | |
1214 | free (syms); | |
b34976b6 | 1215 | return FALSE; |
e135f41b NC |
1216 | } |
1217 | #endif | |
1218 | ||
1219 | obj_aout_external_syms (abfd) = syms; | |
1220 | obj_aout_external_sym_count (abfd) = count; | |
1221 | } | |
dc810e39 | 1222 | |
e135f41b NC |
1223 | if (obj_aout_external_strings (abfd) == NULL |
1224 | && exec_hdr (abfd)->a_syms != 0) | |
1225 | { | |
1226 | unsigned char string_chars[BYTES_IN_LONG]; | |
1227 | bfd_size_type stringsize; | |
1228 | char *strings; | |
1229 | ||
1230 | /* Get the size of the strings. */ | |
1231 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
116c20d2 | 1232 | || (bfd_bread ((void *) string_chars, (bfd_size_type) BYTES_IN_LONG, |
dc810e39 | 1233 | abfd) != BYTES_IN_LONG)) |
b34976b6 | 1234 | return FALSE; |
dc810e39 | 1235 | stringsize = H_GET_32 (abfd, string_chars); |
e135f41b NC |
1236 | |
1237 | #ifdef USE_MMAP | |
82e51918 | 1238 | if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize, |
b34976b6 AM |
1239 | &obj_aout_string_window (abfd), TRUE)) |
1240 | return FALSE; | |
e135f41b NC |
1241 | strings = (char *) obj_aout_string_window (abfd).data; |
1242 | #else | |
116c20d2 | 1243 | strings = bfd_malloc (stringsize + 1); |
e135f41b | 1244 | if (strings == NULL) |
b34976b6 | 1245 | return FALSE; |
e135f41b NC |
1246 | |
1247 | /* Skip space for the string count in the buffer for convenience | |
1248 | when using indexes. */ | |
dc810e39 | 1249 | if (bfd_bread (strings + 4, stringsize - 4, abfd) != stringsize - 4) |
e135f41b NC |
1250 | { |
1251 | free (strings); | |
b34976b6 | 1252 | return FALSE; |
e135f41b NC |
1253 | } |
1254 | #endif | |
e135f41b NC |
1255 | /* Ensure that a zero index yields an empty string. */ |
1256 | strings[0] = '\0'; | |
1257 | ||
1258 | strings[stringsize - 1] = 0; | |
1259 | ||
1260 | obj_aout_external_strings (abfd) = strings; | |
1261 | obj_aout_external_string_size (abfd) = stringsize; | |
1262 | } | |
1263 | ||
b34976b6 | 1264 | return TRUE; |
e135f41b NC |
1265 | } |
1266 | ||
1267 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type | |
1268 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1269 | nlist structure. This function is responsible for setting | |
1270 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
1271 | ||
b34976b6 | 1272 | static bfd_boolean |
116c20d2 NC |
1273 | translate_from_native_sym_flags (bfd *abfd, |
1274 | aout_symbol_type *cache_ptr) | |
e135f41b NC |
1275 | { |
1276 | flagword visible; | |
1277 | ||
1278 | if (cache_ptr->type == N_FN) | |
1279 | { | |
1280 | asection *sec; | |
1281 | ||
1282 | /* This is a debugging symbol. */ | |
e135f41b NC |
1283 | cache_ptr->symbol.flags = BSF_DEBUGGING; |
1284 | ||
1285 | /* Work out the symbol section. */ | |
1286 | switch (cache_ptr->type & N_TYPE) | |
1287 | { | |
1288 | case N_TEXT: | |
1289 | case N_FN: | |
1290 | sec = obj_textsec (abfd); | |
1291 | break; | |
1292 | case N_DATA: | |
1293 | sec = obj_datasec (abfd); | |
1294 | break; | |
1295 | case N_BSS: | |
1296 | sec = obj_bsssec (abfd); | |
1297 | break; | |
1298 | default: | |
1299 | case N_ABS: | |
1300 | sec = bfd_abs_section_ptr; | |
1301 | break; | |
1302 | } | |
1303 | ||
1304 | cache_ptr->symbol.section = sec; | |
1305 | cache_ptr->symbol.value -= sec->vma; | |
1306 | ||
b34976b6 | 1307 | return TRUE; |
e135f41b NC |
1308 | } |
1309 | ||
1310 | /* Get the default visibility. This does not apply to all types, so | |
1311 | we just hold it in a local variable to use if wanted. */ | |
1312 | if ((cache_ptr->type & N_EXT) == 0) | |
1313 | visible = BSF_LOCAL; | |
1314 | else | |
1315 | visible = BSF_GLOBAL; | |
1316 | ||
1317 | switch (cache_ptr->type) | |
1318 | { | |
1319 | default: | |
1320 | case N_ABS: case N_ABS | N_EXT: | |
1321 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1322 | cache_ptr->symbol.flags = visible; | |
1323 | break; | |
1324 | ||
1325 | case N_UNDF | N_EXT: | |
1326 | if (cache_ptr->symbol.value != 0) | |
1327 | { | |
1328 | /* This is a common symbol. */ | |
1329 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
1330 | cache_ptr->symbol.section = bfd_com_section_ptr; | |
1331 | } | |
1332 | else | |
1333 | { | |
1334 | cache_ptr->symbol.flags = 0; | |
1335 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1336 | } | |
1337 | break; | |
1338 | ||
1339 | case N_TEXT: case N_TEXT | N_EXT: | |
1340 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1341 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1342 | cache_ptr->symbol.flags = visible; | |
1343 | break; | |
1344 | ||
1345 | case N_DATA: case N_DATA | N_EXT: | |
1346 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1347 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1348 | cache_ptr->symbol.flags = visible; | |
1349 | break; | |
1350 | ||
1351 | case N_BSS: case N_BSS | N_EXT: | |
1352 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1353 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1354 | cache_ptr->symbol.flags = visible; | |
1355 | break; | |
1356 | } | |
1357 | ||
b34976b6 | 1358 | return TRUE; |
e135f41b NC |
1359 | } |
1360 | ||
1361 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ | |
1362 | ||
b34976b6 | 1363 | static bfd_boolean |
116c20d2 NC |
1364 | translate_to_native_sym_flags (bfd *abfd, |
1365 | asymbol *cache_ptr, | |
1366 | struct external_nlist *sym_pointer) | |
e135f41b NC |
1367 | { |
1368 | bfd_vma value = cache_ptr->value; | |
1369 | asection *sec; | |
1370 | bfd_vma off; | |
1371 | ||
1372 | /* Mask out any existing type bits in case copying from one section | |
1373 | to another. */ | |
1374 | sym_pointer->e_type[0] &= ~N_TYPE; | |
1375 | ||
1376 | sec = bfd_get_section (cache_ptr); | |
1377 | off = 0; | |
1378 | ||
1379 | if (sec == NULL) | |
1380 | { | |
1381 | /* This case occurs, e.g., for the *DEBUG* section of a COFF | |
1382 | file. */ | |
1383 | (*_bfd_error_handler) | |
d003868e AM |
1384 | ("%B: can not represent section for symbol `%s' in a.out object file format", |
1385 | abfd, cache_ptr->name != NULL ? cache_ptr->name : "*unknown*"); | |
e135f41b | 1386 | bfd_set_error (bfd_error_nonrepresentable_section); |
b34976b6 | 1387 | return FALSE; |
e135f41b NC |
1388 | } |
1389 | ||
1390 | if (sec->output_section != NULL) | |
1391 | { | |
1392 | off = sec->output_offset; | |
1393 | sec = sec->output_section; | |
1394 | } | |
1395 | ||
1396 | if (bfd_is_abs_section (sec)) | |
1397 | sym_pointer->e_type[0] |= N_ABS; | |
1398 | else if (sec == obj_textsec (abfd)) | |
1399 | sym_pointer->e_type[0] |= N_TEXT; | |
1400 | else if (sec == obj_datasec (abfd)) | |
1401 | sym_pointer->e_type[0] |= N_DATA; | |
1402 | else if (sec == obj_bsssec (abfd)) | |
1403 | sym_pointer->e_type[0] |= N_BSS; | |
1404 | else if (bfd_is_und_section (sec)) | |
1405 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1406 | else if (bfd_is_com_section (sec)) | |
1407 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1408 | else | |
1409 | { | |
1410 | (*_bfd_error_handler) | |
d003868e AM |
1411 | ("%B: can not represent section `%A' in a.out object file format", |
1412 | abfd, sec); | |
e135f41b | 1413 | bfd_set_error (bfd_error_nonrepresentable_section); |
b34976b6 | 1414 | return FALSE; |
e135f41b NC |
1415 | } |
1416 | ||
1417 | /* Turn the symbol from section relative to absolute again */ | |
1418 | value += sec->vma + off; | |
1419 | ||
1420 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) | |
1421 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1422 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
1423 | sym_pointer->e_type[0] |= N_EXT; | |
1424 | ||
e135f41b NC |
1425 | PUT_WORD(abfd, value, sym_pointer->e_value); |
1426 | ||
b34976b6 | 1427 | return TRUE; |
e135f41b NC |
1428 | } |
1429 | \f | |
1430 | /* Native-level interface to symbols. */ | |
1431 | ||
1432 | asymbol * | |
116c20d2 | 1433 | NAME (aout, make_empty_symbol) (bfd *abfd) |
e135f41b | 1434 | { |
dc810e39 | 1435 | bfd_size_type amt = sizeof (aout_symbol_type); |
116c20d2 NC |
1436 | aout_symbol_type *new = bfd_zalloc (abfd, amt); |
1437 | ||
e135f41b NC |
1438 | if (!new) |
1439 | return NULL; | |
1440 | new->symbol.the_bfd = abfd; | |
1441 | ||
1442 | return &new->symbol; | |
1443 | } | |
1444 | ||
1445 | /* Translate a set of internal symbols into external symbols. */ | |
1446 | ||
b34976b6 | 1447 | bfd_boolean |
116c20d2 NC |
1448 | NAME (aout, translate_symbol_table) (bfd *abfd, |
1449 | aout_symbol_type *in, | |
1450 | struct external_nlist *ext, | |
1451 | bfd_size_type count, | |
1452 | char *str, | |
1453 | bfd_size_type strsize, | |
1454 | bfd_boolean dynamic) | |
e135f41b NC |
1455 | { |
1456 | struct external_nlist *ext_end; | |
1457 | ||
1458 | ext_end = ext + count; | |
1459 | for (; ext < ext_end; ext++, in++) | |
1460 | { | |
1461 | bfd_vma x; | |
1462 | ||
1463 | x = GET_WORD (abfd, ext->e_strx); | |
1464 | in->symbol.the_bfd = abfd; | |
1465 | ||
1466 | /* For the normal symbols, the zero index points at the number | |
1467 | of bytes in the string table but is to be interpreted as the | |
1468 | null string. For the dynamic symbols, the number of bytes in | |
1469 | the string table is stored in the __DYNAMIC structure and the | |
1470 | zero index points at an actual string. */ | |
1471 | if (x == 0 && ! dynamic) | |
1472 | in->symbol.name = ""; | |
1473 | else if (x < strsize) | |
1474 | in->symbol.name = str + x; | |
1475 | else | |
b34976b6 | 1476 | return FALSE; |
e135f41b NC |
1477 | |
1478 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
116c20d2 | 1479 | /* TODO: is 0 a safe value here? */ |
e135f41b NC |
1480 | in->desc = 0; |
1481 | in->other = 0; | |
dc810e39 | 1482 | in->type = H_GET_8 (abfd, ext->e_type); |
e135f41b NC |
1483 | in->symbol.udata.p = NULL; |
1484 | ||
1485 | if (! translate_from_native_sym_flags (abfd, in)) | |
b34976b6 | 1486 | return FALSE; |
e135f41b NC |
1487 | |
1488 | if (dynamic) | |
1489 | in->symbol.flags |= BSF_DYNAMIC; | |
1490 | } | |
1491 | ||
b34976b6 | 1492 | return TRUE; |
e135f41b NC |
1493 | } |
1494 | ||
1495 | /* We read the symbols into a buffer, which is discarded when this | |
1496 | function exits. We read the strings into a buffer large enough to | |
116c20d2 | 1497 | hold them all plus all the cached symbol entries. */ |
e135f41b | 1498 | |
b34976b6 | 1499 | bfd_boolean |
116c20d2 | 1500 | NAME (aout, slurp_symbol_table) (bfd *abfd) |
e135f41b NC |
1501 | { |
1502 | struct external_nlist *old_external_syms; | |
1503 | aout_symbol_type *cached; | |
dc810e39 | 1504 | bfd_size_type cached_size; |
e135f41b | 1505 | |
116c20d2 NC |
1506 | /* If there's no work to be done, don't do any. */ |
1507 | if (obj_aout_symbols (abfd) != NULL) | |
b34976b6 | 1508 | return TRUE; |
e135f41b NC |
1509 | |
1510 | old_external_syms = obj_aout_external_syms (abfd); | |
1511 | ||
1512 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 1513 | return FALSE; |
e135f41b | 1514 | |
dc810e39 AM |
1515 | cached_size = obj_aout_external_sym_count (abfd); |
1516 | cached_size *= sizeof (aout_symbol_type); | |
116c20d2 | 1517 | cached = bfd_zmalloc (cached_size); |
e135f41b | 1518 | if (cached == NULL && cached_size != 0) |
b34976b6 | 1519 | return FALSE; |
e135f41b NC |
1520 | |
1521 | /* Convert from external symbol information to internal. */ | |
116c20d2 | 1522 | if (! (NAME (aout, translate_symbol_table) |
e135f41b NC |
1523 | (abfd, cached, |
1524 | obj_aout_external_syms (abfd), | |
1525 | obj_aout_external_sym_count (abfd), | |
1526 | obj_aout_external_strings (abfd), | |
1527 | obj_aout_external_string_size (abfd), | |
b34976b6 | 1528 | FALSE))) |
e135f41b NC |
1529 | { |
1530 | free (cached); | |
b34976b6 | 1531 | return FALSE; |
e135f41b NC |
1532 | } |
1533 | ||
1534 | bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); | |
1535 | ||
1536 | obj_aout_symbols (abfd) = cached; | |
1537 | ||
1538 | /* It is very likely that anybody who calls this function will not | |
1539 | want the external symbol information, so if it was allocated | |
1540 | because of our call to aout_get_external_symbols, we free it up | |
1541 | right away to save space. */ | |
116c20d2 NC |
1542 | if (old_external_syms == NULL |
1543 | && obj_aout_external_syms (abfd) != NULL) | |
e135f41b NC |
1544 | { |
1545 | #ifdef USE_MMAP | |
1546 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
1547 | #else | |
1548 | free (obj_aout_external_syms (abfd)); | |
1549 | #endif | |
1550 | obj_aout_external_syms (abfd) = NULL; | |
1551 | } | |
1552 | ||
b34976b6 | 1553 | return TRUE; |
e135f41b NC |
1554 | } |
1555 | \f | |
1556 | /* We use a hash table when writing out symbols so that we only write | |
1557 | out a particular string once. This helps particularly when the | |
1558 | linker writes out stabs debugging entries, because each different | |
1559 | contributing object file tends to have many duplicate stabs | |
1560 | strings. | |
1561 | ||
1562 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it | |
1563 | if BFD_TRADITIONAL_FORMAT is set. */ | |
1564 | ||
e135f41b NC |
1565 | /* Get the index of a string in a strtab, adding it if it is not |
1566 | already present. */ | |
1567 | ||
1568 | static INLINE bfd_size_type | |
116c20d2 NC |
1569 | add_to_stringtab (bfd *abfd, |
1570 | struct bfd_strtab_hash *tab, | |
1571 | const char *str, | |
1572 | bfd_boolean copy) | |
e135f41b | 1573 | { |
b34976b6 | 1574 | bfd_boolean hash; |
e135f41b NC |
1575 | bfd_size_type index; |
1576 | ||
1577 | /* An index of 0 always means the empty string. */ | |
1578 | if (str == 0 || *str == '\0') | |
1579 | return 0; | |
1580 | ||
1581 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx | |
1582 | doesn't understand a hashed string table. */ | |
b34976b6 | 1583 | hash = TRUE; |
e135f41b | 1584 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 1585 | hash = FALSE; |
e135f41b NC |
1586 | |
1587 | index = _bfd_stringtab_add (tab, str, hash, copy); | |
1588 | ||
1589 | if (index != (bfd_size_type) -1) | |
116c20d2 NC |
1590 | /* Add BYTES_IN_LONG to the return value to account for the |
1591 | space taken up by the string table size. */ | |
1592 | index += BYTES_IN_LONG; | |
e135f41b NC |
1593 | |
1594 | return index; | |
1595 | } | |
1596 | ||
1597 | /* Write out a strtab. ABFD is already at the right location in the | |
1598 | file. */ | |
1599 | ||
b34976b6 | 1600 | static bfd_boolean |
116c20d2 | 1601 | emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab) |
e135f41b NC |
1602 | { |
1603 | bfd_byte buffer[BYTES_IN_LONG]; | |
1604 | ||
1605 | /* The string table starts with the size. */ | |
dc810e39 | 1606 | H_PUT_32 (abfd, _bfd_stringtab_size (tab) + BYTES_IN_LONG, buffer); |
116c20d2 | 1607 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) BYTES_IN_LONG, abfd) |
dc810e39 | 1608 | != BYTES_IN_LONG) |
b34976b6 | 1609 | return FALSE; |
e135f41b NC |
1610 | |
1611 | return _bfd_stringtab_emit (abfd, tab); | |
1612 | } | |
1613 | \f | |
b34976b6 | 1614 | bfd_boolean |
116c20d2 | 1615 | NAME (aout, write_syms) (bfd *abfd) |
e135f41b NC |
1616 | { |
1617 | unsigned int count ; | |
1618 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1619 | struct bfd_strtab_hash *strtab; | |
1620 | ||
1621 | strtab = _bfd_stringtab_init (); | |
1622 | if (strtab == NULL) | |
b34976b6 | 1623 | return FALSE; |
e135f41b NC |
1624 | |
1625 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1626 | { | |
1627 | asymbol *g = generic[count]; | |
1628 | bfd_size_type indx; | |
1629 | struct external_nlist nsp; | |
1630 | ||
dc810e39 | 1631 | PUT_WORD (abfd, 0, nsp.e_unused); |
e135f41b | 1632 | |
b34976b6 | 1633 | indx = add_to_stringtab (abfd, strtab, g->name, FALSE); |
e135f41b NC |
1634 | if (indx == (bfd_size_type) -1) |
1635 | goto error_return; | |
dc810e39 | 1636 | PUT_WORD (abfd, indx, nsp.e_strx); |
e135f41b NC |
1637 | |
1638 | if (bfd_asymbol_flavour(g) == abfd->xvec->flavour) | |
dc810e39 | 1639 | H_PUT_8 (abfd, aout_symbol(g)->type, nsp.e_type); |
e135f41b | 1640 | else |
dc810e39 | 1641 | H_PUT_8 (abfd, 0, nsp.e_type); |
e135f41b NC |
1642 | |
1643 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) | |
1644 | goto error_return; | |
1645 | ||
dc810e39 | 1646 | H_PUT_8 (abfd, 0, nsp.e_ovly); |
e135f41b | 1647 | |
116c20d2 | 1648 | if (bfd_bwrite ((void *)&nsp, (bfd_size_type) EXTERNAL_NLIST_SIZE, abfd) |
e135f41b NC |
1649 | != EXTERNAL_NLIST_SIZE) |
1650 | goto error_return; | |
1651 | ||
1652 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only | |
1653 | here, at the end. */ | |
1654 | g->KEEPIT = count; | |
1655 | } | |
1656 | ||
1657 | if (! emit_stringtab (abfd, strtab)) | |
1658 | goto error_return; | |
1659 | ||
1660 | _bfd_stringtab_free (strtab); | |
1661 | ||
b34976b6 | 1662 | return TRUE; |
e135f41b NC |
1663 | |
1664 | error_return: | |
1665 | _bfd_stringtab_free (strtab); | |
b34976b6 | 1666 | return FALSE; |
e135f41b NC |
1667 | } |
1668 | ||
1669 | \f | |
1670 | long | |
116c20d2 | 1671 | NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location) |
e135f41b | 1672 | { |
116c20d2 NC |
1673 | unsigned int counter = 0; |
1674 | aout_symbol_type *symbase; | |
e135f41b | 1675 | |
116c20d2 NC |
1676 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
1677 | return -1; | |
e135f41b | 1678 | |
116c20d2 NC |
1679 | for (symbase = obj_aout_symbols (abfd); counter++ < bfd_get_symcount (abfd);) |
1680 | *(location++) = (asymbol *)(symbase++); | |
1681 | *location++ =0; | |
1682 | return bfd_get_symcount (abfd); | |
e135f41b NC |
1683 | } |
1684 | ||
1685 | \f | |
116c20d2 | 1686 | /* Output extended relocation information to a file in target byte order. */ |
e135f41b | 1687 | |
116c20d2 NC |
1688 | static void |
1689 | pdp11_aout_swap_reloc_out (bfd *abfd, arelent *g, bfd_byte *natptr) | |
e135f41b NC |
1690 | { |
1691 | int r_index; | |
1692 | int r_pcrel; | |
1693 | int reloc_entry; | |
1694 | int r_type; | |
1695 | asymbol *sym = *(g->sym_ptr_ptr); | |
1696 | asection *output_section = sym->section->output_section; | |
1697 | ||
1698 | if (g->addend != 0) | |
1699 | fprintf (stderr, "BFD: can't do this reloc addend stuff\n"); | |
1700 | ||
1701 | r_pcrel = g->howto->pc_relative; | |
1702 | ||
1703 | if (bfd_is_abs_section (output_section)) | |
1704 | r_type = RABS; | |
1705 | else if (output_section == obj_textsec (abfd)) | |
1706 | r_type = RTEXT; | |
1707 | else if (output_section == obj_datasec (abfd)) | |
1708 | r_type = RDATA; | |
1709 | else if (output_section == obj_bsssec (abfd)) | |
1710 | r_type = RBSS; | |
1711 | else if (bfd_is_und_section (output_section)) | |
1712 | r_type = REXT; | |
1713 | else if (bfd_is_com_section (output_section)) | |
1714 | r_type = REXT; | |
1715 | else | |
1716 | r_type = -1; | |
1717 | ||
1718 | BFD_ASSERT (r_type != -1); | |
1719 | ||
1720 | if (r_type == RABS) | |
1721 | r_index = 0; | |
1722 | else | |
1723 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
1724 | ||
e135f41b NC |
1725 | reloc_entry = r_index << 4 | r_type | r_pcrel; |
1726 | ||
9dadfa79 | 1727 | PUT_WORD (abfd, reloc_entry, natptr); |
e135f41b NC |
1728 | } |
1729 | ||
1730 | /* BFD deals internally with all things based from the section they're | |
1731 | in. so, something in 10 bytes into a text section with a base of | |
1732 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
1733 | ||
1734 | Aout keeps all it's symbols based from zero, so the symbol would | |
1735 | contain 60. This macro subs the base of each section from the value | |
1736 | to give the true offset from the section */ | |
1737 | ||
1738 | ||
1739 | #define MOVE_ADDRESS(ad) \ | |
1740 | if (r_extern) \ | |
1741 | { \ | |
1742 | /* Undefined symbol. */ \ | |
1743 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
1744 | cache_ptr->addend = ad; \ | |
1745 | } \ | |
1746 | else \ | |
1747 | { \ | |
1748 | /* Defined, section relative. replace symbol with pointer to \ | |
1749 | symbol which points to section. */ \ | |
1750 | switch (r_index) \ | |
1751 | { \ | |
1752 | case N_TEXT: \ | |
1753 | case N_TEXT | N_EXT: \ | |
1754 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ | |
1755 | cache_ptr->addend = ad - su->textsec->vma; \ | |
1756 | break; \ | |
1757 | case N_DATA: \ | |
1758 | case N_DATA | N_EXT: \ | |
1759 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ | |
1760 | cache_ptr->addend = ad - su->datasec->vma; \ | |
1761 | break; \ | |
1762 | case N_BSS: \ | |
1763 | case N_BSS | N_EXT: \ | |
1764 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ | |
1765 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
1766 | break; \ | |
1767 | default: \ | |
1768 | case N_ABS: \ | |
1769 | case N_ABS | N_EXT: \ | |
1770 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
1771 | cache_ptr->addend = ad; \ | |
1772 | break; \ | |
1773 | } \ | |
dc810e39 | 1774 | } |
e135f41b | 1775 | |
116c20d2 NC |
1776 | static void |
1777 | pdp11_aout_swap_reloc_in (bfd * abfd, | |
1778 | bfd_byte * bytes, | |
1779 | arelent * cache_ptr, | |
1780 | bfd_size_type offset, | |
1781 | asymbol ** symbols, | |
1782 | bfd_size_type symcount) | |
e135f41b NC |
1783 | { |
1784 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
1785 | unsigned int r_index; | |
1786 | int reloc_entry; | |
1787 | int r_extern; | |
1788 | int r_pcrel; | |
1789 | ||
116c20d2 | 1790 | reloc_entry = GET_WORD (abfd, (void *) bytes); |
e135f41b NC |
1791 | |
1792 | r_pcrel = reloc_entry & RELFLG; | |
1793 | ||
1794 | cache_ptr->address = offset; | |
1795 | cache_ptr->howto = howto_table_pdp11 + (r_pcrel ? 1 : 0); | |
1796 | ||
1797 | if ((reloc_entry & RTYPE) == RABS) | |
1798 | r_index = N_ABS; | |
1799 | else | |
1800 | r_index = RINDEX (reloc_entry); | |
1801 | ||
1802 | /* r_extern reflects whether the symbol the reloc is against is | |
1803 | local or global. */ | |
1804 | r_extern = (reloc_entry & RTYPE) == REXT; | |
1805 | ||
1806 | if (r_extern && r_index > symcount) | |
1807 | { | |
1808 | /* We could arrange to return an error, but it might be useful | |
1809 | to see the file even if it is bad. */ | |
1810 | r_extern = 0; | |
1811 | r_index = N_ABS; | |
1812 | } | |
1813 | ||
1814 | MOVE_ADDRESS(0); | |
1815 | } | |
1816 | ||
1817 | /* Read and swap the relocs for a section. */ | |
1818 | ||
b34976b6 | 1819 | bfd_boolean |
116c20d2 | 1820 | NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) |
e135f41b | 1821 | { |
9dadfa79 | 1822 | bfd_byte *rptr; |
dc810e39 | 1823 | bfd_size_type count; |
e135f41b | 1824 | bfd_size_type reloc_size; |
116c20d2 | 1825 | void * relocs; |
e135f41b NC |
1826 | arelent *reloc_cache; |
1827 | size_t each_size; | |
1828 | unsigned int counter = 0; | |
1829 | arelent *cache_ptr; | |
1830 | ||
1831 | if (asect->relocation) | |
b34976b6 | 1832 | return TRUE; |
e135f41b NC |
1833 | |
1834 | if (asect->flags & SEC_CONSTRUCTOR) | |
b34976b6 | 1835 | return TRUE; |
e135f41b NC |
1836 | |
1837 | if (asect == obj_datasec (abfd)) | |
1838 | reloc_size = exec_hdr(abfd)->a_drsize; | |
1839 | else if (asect == obj_textsec (abfd)) | |
1840 | reloc_size = exec_hdr(abfd)->a_trsize; | |
1841 | else if (asect == obj_bsssec (abfd)) | |
1842 | reloc_size = 0; | |
1843 | else | |
1844 | { | |
1845 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 1846 | return FALSE; |
e135f41b NC |
1847 | } |
1848 | ||
1849 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) | |
b34976b6 | 1850 | return FALSE; |
e135f41b NC |
1851 | |
1852 | each_size = obj_reloc_entry_size (abfd); | |
1853 | ||
dc810e39 | 1854 | relocs = bfd_malloc (reloc_size); |
e135f41b | 1855 | if (relocs == NULL && reloc_size != 0) |
b34976b6 | 1856 | return FALSE; |
e135f41b | 1857 | |
dc810e39 | 1858 | if (bfd_bread (relocs, reloc_size, abfd) != reloc_size) |
e135f41b NC |
1859 | { |
1860 | free (relocs); | |
b34976b6 | 1861 | return FALSE; |
e135f41b NC |
1862 | } |
1863 | ||
1864 | count = reloc_size / each_size; | |
1865 | ||
116c20d2 | 1866 | /* Count the number of NON-ZERO relocs, this is the count we want. */ |
e135f41b NC |
1867 | { |
1868 | unsigned int real_count = 0; | |
1869 | ||
1870 | for (counter = 0; counter < count; counter++) | |
1871 | { | |
1872 | int x; | |
1873 | ||
973ffd63 | 1874 | x = GET_WORD (abfd, (char *) relocs + each_size * counter); |
e135f41b NC |
1875 | if (x != 0) |
1876 | real_count++; | |
1877 | } | |
1878 | ||
1879 | count = real_count; | |
1880 | } | |
1881 | ||
116c20d2 | 1882 | reloc_cache = bfd_zmalloc (count * sizeof (arelent)); |
e135f41b | 1883 | if (reloc_cache == NULL && count != 0) |
b34976b6 | 1884 | return FALSE; |
e135f41b NC |
1885 | |
1886 | cache_ptr = reloc_cache; | |
1887 | ||
9dadfa79 | 1888 | rptr = relocs; |
e135f41b NC |
1889 | for (counter = 0; |
1890 | counter < count; | |
9dadfa79 | 1891 | counter++, rptr += RELOC_SIZE, cache_ptr++) |
e135f41b | 1892 | { |
116c20d2 | 1893 | while (GET_WORD (abfd, (void *) rptr) == 0) |
e135f41b | 1894 | { |
9dadfa79 | 1895 | rptr += RELOC_SIZE; |
dc810e39 | 1896 | if ((char *) rptr >= (char *) relocs + reloc_size) |
e135f41b NC |
1897 | goto done; |
1898 | } | |
1899 | ||
1900 | pdp11_aout_swap_reloc_in (abfd, rptr, cache_ptr, | |
dc810e39 AM |
1901 | (bfd_size_type) ((char *) rptr - (char *) relocs), |
1902 | symbols, | |
1903 | (bfd_size_type) bfd_get_symcount (abfd)); | |
e135f41b NC |
1904 | } |
1905 | done: | |
1906 | /* Just in case, if rptr >= relocs + reloc_size should happen | |
116c20d2 | 1907 | too early. */ |
e135f41b NC |
1908 | BFD_ASSERT (counter == count); |
1909 | ||
1910 | free (relocs); | |
1911 | ||
1912 | asect->relocation = reloc_cache; | |
1913 | asect->reloc_count = cache_ptr - reloc_cache; | |
1914 | ||
b34976b6 | 1915 | return TRUE; |
e135f41b NC |
1916 | } |
1917 | ||
1918 | /* Write out a relocation section into an object file. */ | |
1919 | ||
b34976b6 | 1920 | bfd_boolean |
116c20d2 | 1921 | NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section) |
e135f41b NC |
1922 | { |
1923 | arelent **generic; | |
1924 | unsigned char *native; | |
1925 | unsigned int count = section->reloc_count; | |
dc810e39 | 1926 | bfd_size_type natsize; |
e135f41b | 1927 | |
eea6121a | 1928 | natsize = section->size; |
116c20d2 | 1929 | native = bfd_zalloc (abfd, natsize); |
e135f41b | 1930 | if (!native) |
b34976b6 | 1931 | return FALSE; |
e135f41b | 1932 | |
e135f41b NC |
1933 | generic = section->orelocation; |
1934 | if (generic != NULL) | |
1935 | { | |
1936 | while (count > 0) | |
1937 | { | |
9dadfa79 | 1938 | bfd_byte *r; |
e135f41b | 1939 | |
9dadfa79 | 1940 | r = native + (*generic)->address; |
e135f41b NC |
1941 | pdp11_aout_swap_reloc_out (abfd, *generic, r); |
1942 | count--; | |
1943 | generic++; | |
1944 | } | |
1945 | } | |
1946 | ||
116c20d2 | 1947 | if (bfd_bwrite ((void *) native, natsize, abfd) != natsize) |
e135f41b | 1948 | { |
dc810e39 | 1949 | bfd_release (abfd, native); |
b34976b6 | 1950 | return FALSE; |
e135f41b NC |
1951 | } |
1952 | ||
1953 | bfd_release (abfd, native); | |
b34976b6 | 1954 | return TRUE; |
e135f41b NC |
1955 | } |
1956 | ||
116c20d2 NC |
1957 | /* This is stupid. This function should be a boolean predicate. */ |
1958 | ||
e135f41b | 1959 | long |
116c20d2 NC |
1960 | NAME (aout, canonicalize_reloc) (bfd *abfd, |
1961 | sec_ptr section, | |
1962 | arelent **relptr, | |
1963 | asymbol **symbols) | |
e135f41b NC |
1964 | { |
1965 | arelent *tblptr = section->relocation; | |
1966 | unsigned int count; | |
1967 | ||
1968 | if (section == obj_bsssec (abfd)) | |
1969 | { | |
1970 | *relptr = NULL; | |
1971 | return 0; | |
1972 | } | |
1973 | ||
116c20d2 | 1974 | if (!(tblptr || NAME (aout, slurp_reloc_table)(abfd, section, symbols))) |
e135f41b NC |
1975 | return -1; |
1976 | ||
1977 | if (section->flags & SEC_CONSTRUCTOR) | |
1978 | { | |
1979 | arelent_chain *chain = section->constructor_chain; | |
1980 | ||
1981 | for (count = 0; count < section->reloc_count; count ++) | |
1982 | { | |
1983 | *relptr ++ = &chain->relent; | |
1984 | chain = chain->next; | |
1985 | } | |
1986 | } | |
1987 | else | |
1988 | { | |
1989 | tblptr = section->relocation; | |
1990 | ||
1991 | for (count = 0; count++ < section->reloc_count;) | |
1992 | *relptr++ = tblptr++; | |
1993 | } | |
1994 | ||
1995 | *relptr = 0; | |
1996 | ||
1997 | return section->reloc_count; | |
1998 | } | |
1999 | ||
2000 | long | |
116c20d2 | 2001 | NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect) |
e135f41b NC |
2002 | { |
2003 | if (bfd_get_format (abfd) != bfd_object) | |
2004 | { | |
2005 | bfd_set_error (bfd_error_invalid_operation); | |
2006 | return -1; | |
2007 | } | |
2008 | ||
dc810e39 | 2009 | if (asect->flags & SEC_CONSTRUCTOR) |
116c20d2 | 2010 | return (sizeof (arelent *) * (asect->reloc_count + 1)); |
e135f41b NC |
2011 | |
2012 | if (asect == obj_datasec (abfd)) | |
2013 | return (sizeof (arelent *) | |
116c20d2 | 2014 | * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd)) |
e135f41b NC |
2015 | + 1)); |
2016 | ||
2017 | if (asect == obj_textsec (abfd)) | |
2018 | return (sizeof (arelent *) | |
116c20d2 | 2019 | * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd)) |
e135f41b NC |
2020 | + 1)); |
2021 | ||
2022 | /* TODO: why are there two if statements for obj_bsssec()? */ | |
2023 | ||
2024 | if (asect == obj_bsssec (abfd)) | |
2025 | return sizeof (arelent *); | |
2026 | ||
2027 | if (asect == obj_bsssec (abfd)) | |
2028 | return 0; | |
2029 | ||
2030 | bfd_set_error (bfd_error_invalid_operation); | |
2031 | return -1; | |
2032 | } | |
2033 | ||
2034 | \f | |
2035 | long | |
116c20d2 | 2036 | NAME (aout, get_symtab_upper_bound) (bfd *abfd) |
e135f41b | 2037 | { |
116c20d2 | 2038 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
e135f41b NC |
2039 | return -1; |
2040 | ||
2041 | return (bfd_get_symcount (abfd) + 1) * (sizeof (aout_symbol_type *)); | |
2042 | } | |
2043 | ||
2044 | alent * | |
116c20d2 NC |
2045 | NAME (aout, get_lineno) (bfd * abfd ATTRIBUTE_UNUSED, |
2046 | asymbol * symbol ATTRIBUTE_UNUSED) | |
e135f41b | 2047 | { |
116c20d2 | 2048 | return NULL; |
e135f41b NC |
2049 | } |
2050 | ||
2051 | void | |
116c20d2 NC |
2052 | NAME (aout, get_symbol_info) (bfd * abfd ATTRIBUTE_UNUSED, |
2053 | asymbol *symbol, | |
2054 | symbol_info *ret) | |
e135f41b NC |
2055 | { |
2056 | bfd_symbol_info (symbol, ret); | |
2057 | ||
2058 | if (ret->type == '?') | |
2059 | { | |
2060 | int type_code = aout_symbol(symbol)->type & 0xff; | |
2061 | const char *stab_name = bfd_get_stab_name (type_code); | |
2062 | static char buf[10]; | |
2063 | ||
2064 | if (stab_name == NULL) | |
2065 | { | |
2066 | sprintf(buf, "(%d)", type_code); | |
2067 | stab_name = buf; | |
2068 | } | |
2069 | ret->type = '-'; | |
116c20d2 NC |
2070 | ret->stab_type = type_code; |
2071 | ret->stab_other = (unsigned) (aout_symbol(symbol)->other & 0xff); | |
2072 | ret->stab_desc = (unsigned) (aout_symbol(symbol)->desc & 0xffff); | |
2073 | ret->stab_name = stab_name; | |
e135f41b NC |
2074 | } |
2075 | } | |
2076 | ||
e135f41b | 2077 | void |
116c20d2 NC |
2078 | NAME (aout, print_symbol) (bfd * abfd, |
2079 | void * afile, | |
2080 | asymbol *symbol, | |
2081 | bfd_print_symbol_type how) | |
e135f41b | 2082 | { |
116c20d2 | 2083 | FILE *file = (FILE *) afile; |
e135f41b NC |
2084 | |
2085 | switch (how) | |
2086 | { | |
2087 | case bfd_print_symbol_name: | |
2088 | if (symbol->name) | |
2089 | fprintf(file,"%s", symbol->name); | |
2090 | break; | |
2091 | case bfd_print_symbol_more: | |
116c20d2 NC |
2092 | fprintf(file,"%4x %2x %2x", |
2093 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2094 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2095 | (unsigned) (aout_symbol (symbol)->type)); | |
e135f41b NC |
2096 | break; |
2097 | case bfd_print_symbol_all: | |
2098 | { | |
dc810e39 | 2099 | const char *section_name = symbol->section->name; |
e135f41b | 2100 | |
116c20d2 | 2101 | bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
e135f41b NC |
2102 | |
2103 | fprintf (file," %-5s %04x %02x %02x", | |
2104 | section_name, | |
116c20d2 NC |
2105 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), |
2106 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2107 | (unsigned) (aout_symbol (symbol)->type & 0xff)); | |
e135f41b NC |
2108 | if (symbol->name) |
2109 | fprintf(file," %s", symbol->name); | |
2110 | } | |
2111 | break; | |
2112 | } | |
2113 | } | |
2114 | ||
2115 | /* If we don't have to allocate more than 1MB to hold the generic | |
2116 | symbols, we use the generic minisymbol method: it's faster, since | |
2117 | it only translates the symbols once, not multiple times. */ | |
2118 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2119 | ||
2120 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2121 | symbols. The minisymbol_to_symbol function translates these into | |
2122 | BFD asymbol structures. */ | |
2123 | ||
2124 | long | |
116c20d2 NC |
2125 | NAME (aout, read_minisymbols) (bfd *abfd, |
2126 | bfd_boolean dynamic, | |
2127 | void * *minisymsp, | |
2128 | unsigned int *sizep) | |
e135f41b NC |
2129 | { |
2130 | if (dynamic) | |
116c20d2 NC |
2131 | /* We could handle the dynamic symbols here as well, but it's |
2132 | easier to hand them off. */ | |
2133 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
e135f41b NC |
2134 | |
2135 | if (! aout_get_external_symbols (abfd)) | |
2136 | return -1; | |
2137 | ||
2138 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2139 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2140 | ||
116c20d2 | 2141 | *minisymsp = (void *) obj_aout_external_syms (abfd); |
e135f41b NC |
2142 | |
2143 | /* By passing the external symbols back from this routine, we are | |
2144 | giving up control over the memory block. Clear | |
2145 | obj_aout_external_syms, so that we do not try to free it | |
2146 | ourselves. */ | |
2147 | obj_aout_external_syms (abfd) = NULL; | |
2148 | ||
2149 | *sizep = EXTERNAL_NLIST_SIZE; | |
2150 | return obj_aout_external_sym_count (abfd); | |
2151 | } | |
2152 | ||
2153 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2154 | unmodified a.out symbol. The SYM argument is a structure returned | |
2155 | by bfd_make_empty_symbol, which we fill in here. */ | |
2156 | ||
2157 | asymbol * | |
116c20d2 NC |
2158 | NAME (aout, minisymbol_to_symbol) (bfd *abfd, |
2159 | bfd_boolean dynamic, | |
2160 | const void * minisym, | |
2161 | asymbol *sym) | |
e135f41b NC |
2162 | { |
2163 | if (dynamic | |
2164 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2165 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2166 | ||
2167 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2168 | ||
2169 | /* We call translate_symbol_table to translate a single symbol. */ | |
116c20d2 | 2170 | if (! (NAME (aout, translate_symbol_table) |
e135f41b NC |
2171 | (abfd, |
2172 | (aout_symbol_type *) sym, | |
2173 | (struct external_nlist *) minisym, | |
2174 | (bfd_size_type) 1, | |
2175 | obj_aout_external_strings (abfd), | |
2176 | obj_aout_external_string_size (abfd), | |
b34976b6 | 2177 | FALSE))) |
e135f41b NC |
2178 | return NULL; |
2179 | ||
2180 | return sym; | |
2181 | } | |
2182 | ||
116c20d2 NC |
2183 | /* Provided a BFD, a section and an offset into the section, calculate |
2184 | and return the name of the source file and the line nearest to the | |
2185 | wanted location. */ | |
e135f41b | 2186 | |
b34976b6 | 2187 | bfd_boolean |
116c20d2 NC |
2188 | NAME (aout, find_nearest_line) (bfd *abfd, |
2189 | asection *section, | |
2190 | asymbol **symbols, | |
2191 | bfd_vma offset, | |
2192 | const char **filename_ptr, | |
2193 | const char **functionname_ptr, | |
2194 | unsigned int *line_ptr) | |
e135f41b | 2195 | { |
116c20d2 | 2196 | /* Run down the file looking for the filename, function and linenumber. */ |
e135f41b | 2197 | asymbol **p; |
dc810e39 AM |
2198 | const char *directory_name = NULL; |
2199 | const char *main_file_name = NULL; | |
2200 | const char *current_file_name = NULL; | |
116c20d2 | 2201 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ |
e135f41b NC |
2202 | bfd_vma low_line_vma = 0; |
2203 | bfd_vma low_func_vma = 0; | |
2204 | asymbol *func = 0; | |
2205 | size_t filelen, funclen; | |
2206 | char *buf; | |
2207 | ||
2208 | *filename_ptr = abfd->filename; | |
2209 | *functionname_ptr = 0; | |
2210 | *line_ptr = 0; | |
2211 | ||
116c20d2 | 2212 | if (symbols != NULL) |
e135f41b NC |
2213 | { |
2214 | for (p = symbols; *p; p++) | |
2215 | { | |
2216 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
2217 | next: | |
2218 | switch (q->type) | |
2219 | { | |
2220 | case N_TEXT: | |
2221 | /* If this looks like a file name symbol, and it comes after | |
2222 | the line number we have found so far, but before the | |
2223 | offset, then we have probably not found the right line | |
2224 | number. */ | |
2225 | if (q->symbol.value <= offset | |
2226 | && ((q->symbol.value > low_line_vma | |
2227 | && (line_file_name != NULL | |
2228 | || *line_ptr != 0)) | |
2229 | || (q->symbol.value > low_func_vma | |
2230 | && func != NULL))) | |
2231 | { | |
2232 | const char * symname; | |
2233 | ||
2234 | symname = q->symbol.name; | |
2235 | if (strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
2236 | { | |
2237 | if (q->symbol.value > low_line_vma) | |
2238 | { | |
2239 | *line_ptr = 0; | |
2240 | line_file_name = NULL; | |
2241 | } | |
2242 | if (q->symbol.value > low_func_vma) | |
2243 | func = NULL; | |
2244 | } | |
2245 | } | |
2246 | break; | |
2247 | ||
2248 | case N_SO: | |
2249 | /* If this symbol is less than the offset, but greater than | |
2250 | the line number we have found so far, then we have not | |
2251 | found the right line number. */ | |
2252 | if (q->symbol.value <= offset) | |
2253 | { | |
2254 | if (q->symbol.value > low_line_vma) | |
2255 | { | |
2256 | *line_ptr = 0; | |
2257 | line_file_name = NULL; | |
2258 | } | |
2259 | if (q->symbol.value > low_func_vma) | |
2260 | func = NULL; | |
2261 | } | |
2262 | ||
2263 | main_file_name = current_file_name = q->symbol.name; | |
116c20d2 | 2264 | /* Look ahead to next symbol to check if that too is an N_SO. */ |
e135f41b NC |
2265 | p++; |
2266 | if (*p == NULL) | |
2267 | break; | |
2268 | q = (aout_symbol_type *)(*p); | |
116c20d2 | 2269 | if (q->type != (int) N_SO) |
e135f41b NC |
2270 | goto next; |
2271 | ||
116c20d2 | 2272 | /* Found a second N_SO First is directory; second is filename. */ |
e135f41b NC |
2273 | directory_name = current_file_name; |
2274 | main_file_name = current_file_name = q->symbol.name; | |
2275 | if (obj_textsec(abfd) != section) | |
2276 | goto done; | |
2277 | break; | |
2278 | case N_SOL: | |
2279 | current_file_name = q->symbol.name; | |
2280 | break; | |
2281 | ||
2282 | case N_SLINE: | |
2283 | case N_DSLINE: | |
2284 | case N_BSLINE: | |
2285 | /* We'll keep this if it resolves nearer than the one we have | |
2286 | already. */ | |
2287 | if (q->symbol.value >= low_line_vma | |
2288 | && q->symbol.value <= offset) | |
2289 | { | |
2290 | *line_ptr = q->desc; | |
2291 | low_line_vma = q->symbol.value; | |
2292 | line_file_name = current_file_name; | |
2293 | } | |
2294 | break; | |
2295 | ||
2296 | case N_FUN: | |
2297 | { | |
116c20d2 | 2298 | /* We'll keep this if it is nearer than the one we have already. */ |
e135f41b NC |
2299 | if (q->symbol.value >= low_func_vma && |
2300 | q->symbol.value <= offset) | |
2301 | { | |
2302 | low_func_vma = q->symbol.value; | |
116c20d2 | 2303 | func = (asymbol *) q; |
e135f41b NC |
2304 | } |
2305 | else if (q->symbol.value > offset) | |
2306 | goto done; | |
2307 | } | |
2308 | break; | |
2309 | } | |
2310 | } | |
2311 | } | |
2312 | ||
2313 | done: | |
2314 | if (*line_ptr != 0) | |
2315 | main_file_name = line_file_name; | |
2316 | ||
2317 | if (main_file_name == NULL | |
2318 | || main_file_name[0] == '/' | |
2319 | || directory_name == NULL) | |
2320 | filelen = 0; | |
2321 | else | |
2322 | filelen = strlen (directory_name) + strlen (main_file_name); | |
2323 | if (func == NULL) | |
2324 | funclen = 0; | |
2325 | else | |
2326 | funclen = strlen (bfd_asymbol_name (func)); | |
2327 | ||
2328 | if (adata (abfd).line_buf != NULL) | |
2329 | free (adata (abfd).line_buf); | |
2330 | if (filelen + funclen == 0) | |
2331 | adata (abfd).line_buf = buf = NULL; | |
2332 | else | |
2333 | { | |
116c20d2 | 2334 | buf = bfd_malloc ((bfd_size_type) filelen + funclen + 3); |
e135f41b NC |
2335 | adata (abfd).line_buf = buf; |
2336 | if (buf == NULL) | |
b34976b6 | 2337 | return FALSE; |
e135f41b NC |
2338 | } |
2339 | ||
2340 | if (main_file_name != NULL) | |
2341 | { | |
2342 | if (main_file_name[0] == '/' || directory_name == NULL) | |
2343 | *filename_ptr = main_file_name; | |
2344 | else | |
2345 | { | |
2346 | sprintf (buf, "%s%s", directory_name, main_file_name); | |
2347 | *filename_ptr = buf; | |
2348 | buf += filelen + 1; | |
2349 | } | |
2350 | } | |
2351 | ||
2352 | if (func) | |
2353 | { | |
2354 | const char *function = func->name; | |
dc810e39 | 2355 | char *colon; |
e135f41b NC |
2356 | |
2357 | /* The caller expects a symbol name. We actually have a | |
2358 | function name, without the leading underscore. Put the | |
2359 | underscore back in, so that the caller gets a symbol name. */ | |
2360 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2361 | strcpy (buf, function); | |
2362 | else | |
2363 | { | |
2364 | buf[0] = bfd_get_symbol_leading_char (abfd); | |
2365 | strcpy (buf + 1, function); | |
2366 | } | |
2367 | ||
2368 | /* Have to remove : stuff. */ | |
dc810e39 AM |
2369 | colon = strchr (buf, ':'); |
2370 | if (colon != NULL) | |
2371 | *colon = '\0'; | |
e135f41b NC |
2372 | *functionname_ptr = buf; |
2373 | } | |
2374 | ||
b34976b6 | 2375 | return TRUE; |
e135f41b NC |
2376 | } |
2377 | ||
2378 | int | |
116c20d2 | 2379 | NAME (aout, sizeof_headers) (bfd *abfd, bfd_boolean execable ATTRIBUTE_UNUSED) |
e135f41b | 2380 | { |
116c20d2 | 2381 | return adata (abfd).exec_bytes_size; |
e135f41b NC |
2382 | } |
2383 | ||
2384 | /* Free all information we have cached for this BFD. We can always | |
2385 | read it again later if we need it. */ | |
2386 | ||
b34976b6 | 2387 | bfd_boolean |
116c20d2 | 2388 | NAME (aout, bfd_free_cached_info) (bfd *abfd) |
e135f41b NC |
2389 | { |
2390 | asection *o; | |
2391 | ||
2392 | if (bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 2393 | return TRUE; |
e135f41b NC |
2394 | |
2395 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } | |
2396 | BFCI_FREE (obj_aout_symbols (abfd)); | |
116c20d2 | 2397 | |
e135f41b NC |
2398 | #ifdef USE_MMAP |
2399 | obj_aout_external_syms (abfd) = 0; | |
2400 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2401 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2402 | obj_aout_external_strings (abfd) = 0; | |
2403 | #else | |
2404 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2405 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2406 | #endif | |
116c20d2 | 2407 | for (o = abfd->sections; o != NULL; o = o->next) |
e135f41b NC |
2408 | BFCI_FREE (o->relocation); |
2409 | #undef BFCI_FREE | |
2410 | ||
b34976b6 | 2411 | return TRUE; |
e135f41b NC |
2412 | } |
2413 | \f | |
e135f41b NC |
2414 | /* Routine to create an entry in an a.out link hash table. */ |
2415 | ||
2416 | struct bfd_hash_entry * | |
116c20d2 NC |
2417 | NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry, |
2418 | struct bfd_hash_table *table, | |
2419 | const char *string) | |
e135f41b NC |
2420 | { |
2421 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2422 | ||
2423 | /* Allocate the structure if it has not already been allocated by a | |
2424 | subclass. */ | |
116c20d2 NC |
2425 | if (ret == NULL) |
2426 | ret = bfd_hash_allocate (table, sizeof (* ret)); | |
2427 | if (ret == NULL) | |
2428 | return NULL; | |
e135f41b NC |
2429 | |
2430 | /* Call the allocation method of the superclass. */ | |
116c20d2 NC |
2431 | ret = (struct aout_link_hash_entry *) |
2432 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string); | |
e135f41b NC |
2433 | if (ret) |
2434 | { | |
2435 | /* Set local fields. */ | |
b34976b6 | 2436 | ret->written = FALSE; |
e135f41b NC |
2437 | ret->indx = -1; |
2438 | } | |
2439 | ||
2440 | return (struct bfd_hash_entry *) ret; | |
2441 | } | |
2442 | ||
2443 | /* Initialize an a.out link hash table. */ | |
2444 | ||
b34976b6 | 2445 | bfd_boolean |
116c20d2 NC |
2446 | NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table, |
2447 | bfd *abfd, | |
2448 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
2449 | struct bfd_hash_table *, | |
66eb6687 AM |
2450 | const char *), |
2451 | unsigned int entsize) | |
e135f41b | 2452 | { |
66eb6687 | 2453 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
e135f41b NC |
2454 | } |
2455 | ||
2456 | /* Create an a.out link hash table. */ | |
2457 | ||
2458 | struct bfd_link_hash_table * | |
116c20d2 | 2459 | NAME (aout, link_hash_table_create) (bfd *abfd) |
e135f41b NC |
2460 | { |
2461 | struct aout_link_hash_table *ret; | |
dc810e39 | 2462 | bfd_size_type amt = sizeof (struct aout_link_hash_table); |
e135f41b | 2463 | |
116c20d2 | 2464 | ret = bfd_alloc (abfd, amt); |
e135f41b | 2465 | if (ret == NULL) |
116c20d2 NC |
2466 | return NULL; |
2467 | if (! NAME (aout, link_hash_table_init) (ret, abfd, | |
66eb6687 AM |
2468 | NAME (aout, link_hash_newfunc), |
2469 | sizeof (struct aout_link_hash_entry))) | |
e135f41b NC |
2470 | { |
2471 | free (ret); | |
116c20d2 | 2472 | return NULL; |
e135f41b NC |
2473 | } |
2474 | return &ret->root; | |
2475 | } | |
2476 | ||
116c20d2 NC |
2477 | /* Free up the internal symbols read from an a.out file. */ |
2478 | ||
2479 | static bfd_boolean | |
2480 | aout_link_free_symbols (bfd *abfd) | |
2481 | { | |
2482 | if (obj_aout_external_syms (abfd) != NULL) | |
2483 | { | |
2484 | #ifdef USE_MMAP | |
2485 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2486 | #else | |
2487 | free ((void *) obj_aout_external_syms (abfd)); | |
2488 | #endif | |
2489 | obj_aout_external_syms (abfd) = NULL; | |
2490 | } | |
2491 | ||
2492 | if (obj_aout_external_strings (abfd) != NULL) | |
2493 | { | |
2494 | #ifdef USE_MMAP | |
2495 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2496 | #else | |
2497 | free ((void *) obj_aout_external_strings (abfd)); | |
2498 | #endif | |
2499 | obj_aout_external_strings (abfd) = NULL; | |
2500 | } | |
2501 | return TRUE; | |
2502 | } | |
2503 | ||
e135f41b NC |
2504 | /* Given an a.out BFD, add symbols to the global hash table as |
2505 | appropriate. */ | |
2506 | ||
b34976b6 | 2507 | bfd_boolean |
116c20d2 | 2508 | NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info) |
e135f41b NC |
2509 | { |
2510 | switch (bfd_get_format (abfd)) | |
2511 | { | |
2512 | case bfd_object: | |
2513 | return aout_link_add_object_symbols (abfd, info); | |
2514 | case bfd_archive: | |
2515 | return _bfd_generic_link_add_archive_symbols | |
2516 | (abfd, info, aout_link_check_archive_element); | |
2517 | default: | |
2518 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2519 | return FALSE; |
e135f41b NC |
2520 | } |
2521 | } | |
2522 | ||
2523 | /* Add symbols from an a.out object file. */ | |
2524 | ||
b34976b6 | 2525 | static bfd_boolean |
116c20d2 | 2526 | aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
e135f41b NC |
2527 | { |
2528 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 2529 | return FALSE; |
e135f41b | 2530 | if (! aout_link_add_symbols (abfd, info)) |
b34976b6 | 2531 | return FALSE; |
e135f41b NC |
2532 | if (! info->keep_memory) |
2533 | { | |
2534 | if (! aout_link_free_symbols (abfd)) | |
b34976b6 | 2535 | return FALSE; |
e135f41b | 2536 | } |
b34976b6 | 2537 | return TRUE; |
e135f41b NC |
2538 | } |
2539 | ||
e135f41b NC |
2540 | /* Look through the internal symbols to see if this object file should |
2541 | be included in the link. We should include this object file if it | |
2542 | defines any symbols which are currently undefined. If this object | |
2543 | file defines a common symbol, then we may adjust the size of the | |
2544 | known symbol but we do not include the object file in the link | |
2545 | (unless there is some other reason to include it). */ | |
2546 | ||
b34976b6 | 2547 | static bfd_boolean |
116c20d2 NC |
2548 | aout_link_check_ar_symbols (bfd *abfd, |
2549 | struct bfd_link_info *info, | |
2550 | bfd_boolean *pneeded) | |
e135f41b | 2551 | { |
116c20d2 | 2552 | struct external_nlist *p; |
e135f41b NC |
2553 | struct external_nlist *pend; |
2554 | char *strings; | |
2555 | ||
b34976b6 | 2556 | *pneeded = FALSE; |
e135f41b NC |
2557 | |
2558 | /* Look through all the symbols. */ | |
2559 | p = obj_aout_external_syms (abfd); | |
2560 | pend = p + obj_aout_external_sym_count (abfd); | |
2561 | strings = obj_aout_external_strings (abfd); | |
2562 | for (; p < pend; p++) | |
2563 | { | |
dc810e39 | 2564 | int type = H_GET_8 (abfd, p->e_type); |
e135f41b NC |
2565 | const char *name; |
2566 | struct bfd_link_hash_entry *h; | |
2567 | ||
2568 | /* Ignore symbols that are not externally visible. This is an | |
2569 | optimization only, as we check the type more thoroughly | |
2570 | below. */ | |
2571 | if ((type & N_EXT) == 0 | |
2572 | || type == N_FN) | |
2573 | continue; | |
2574 | ||
2575 | name = strings + GET_WORD (abfd, p->e_strx); | |
b34976b6 | 2576 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
e135f41b NC |
2577 | |
2578 | /* We are only interested in symbols that are currently | |
2579 | undefined or common. */ | |
116c20d2 | 2580 | if (h == NULL |
e135f41b NC |
2581 | || (h->type != bfd_link_hash_undefined |
2582 | && h->type != bfd_link_hash_common)) | |
2583 | continue; | |
2584 | ||
2585 | if (type == (N_TEXT | N_EXT) | |
2586 | || type == (N_DATA | N_EXT) | |
2587 | || type == (N_BSS | N_EXT) | |
2588 | || type == (N_ABS | N_EXT)) | |
2589 | { | |
2590 | /* This object file defines this symbol. We must link it | |
2591 | in. This is true regardless of whether the current | |
2592 | definition of the symbol is undefined or common. If the | |
2593 | current definition is common, we have a case in which we | |
2594 | have already seen an object file including | |
2595 | int a; | |
2596 | and this object file from the archive includes | |
2597 | int a = 5; | |
2598 | In such a case we must include this object file. | |
2599 | ||
2600 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
2601 | element if the symbol is defined in the .data section, | |
2602 | but not if it is defined in the .text section. That | |
2603 | seems a bit crazy to me, and I haven't implemented it. | |
2604 | However, it might be correct. */ | |
2605 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
b34976b6 AM |
2606 | return FALSE; |
2607 | *pneeded = TRUE; | |
2608 | return TRUE; | |
e135f41b NC |
2609 | } |
2610 | ||
2611 | if (type == (N_UNDF | N_EXT)) | |
2612 | { | |
2613 | bfd_vma value; | |
2614 | ||
2615 | value = GET_WORD (abfd, p->e_value); | |
2616 | if (value != 0) | |
2617 | { | |
2618 | /* This symbol is common in the object from the archive | |
2619 | file. */ | |
2620 | if (h->type == bfd_link_hash_undefined) | |
2621 | { | |
2622 | bfd *symbfd; | |
2623 | unsigned int power; | |
2624 | ||
2625 | symbfd = h->u.undef.abfd; | |
116c20d2 | 2626 | if (symbfd == NULL) |
e135f41b NC |
2627 | { |
2628 | /* This symbol was created as undefined from | |
2629 | outside BFD. We assume that we should link | |
2630 | in the object file. This is done for the -u | |
2631 | option in the linker. */ | |
116c20d2 NC |
2632 | if (! (*info->callbacks->add_archive_element) |
2633 | (info, abfd, name)) | |
b34976b6 AM |
2634 | return FALSE; |
2635 | *pneeded = TRUE; | |
2636 | return TRUE; | |
e135f41b NC |
2637 | } |
2638 | /* Turn the current link symbol into a common | |
2639 | symbol. It is already on the undefs list. */ | |
2640 | h->type = bfd_link_hash_common; | |
116c20d2 NC |
2641 | h->u.c.p = bfd_hash_allocate (&info->hash->table, |
2642 | sizeof (struct bfd_link_hash_common_entry)); | |
e135f41b | 2643 | if (h->u.c.p == NULL) |
b34976b6 | 2644 | return FALSE; |
e135f41b NC |
2645 | |
2646 | h->u.c.size = value; | |
2647 | ||
2648 | /* FIXME: This isn't quite right. The maximum | |
2649 | alignment of a common symbol should be set by the | |
2650 | architecture of the output file, not of the input | |
2651 | file. */ | |
2652 | power = bfd_log2 (value); | |
2653 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
2654 | power = bfd_get_arch_info (abfd)->section_align_power; | |
2655 | h->u.c.p->alignment_power = power; | |
2656 | ||
2657 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
2658 | "COMMON"); | |
2659 | } | |
2660 | else | |
2661 | { | |
2662 | /* Adjust the size of the common symbol if | |
2663 | necessary. */ | |
2664 | if (value > h->u.c.size) | |
2665 | h->u.c.size = value; | |
2666 | } | |
2667 | } | |
2668 | } | |
2669 | } | |
2670 | ||
2671 | /* We do not need this object file. */ | |
b34976b6 | 2672 | return TRUE; |
e135f41b NC |
2673 | } |
2674 | ||
116c20d2 NC |
2675 | /* Check a single archive element to see if we need to include it in |
2676 | the link. *PNEEDED is set according to whether this element is | |
2677 | needed in the link or not. This is called from | |
2678 | _bfd_generic_link_add_archive_symbols. */ | |
2679 | ||
2680 | static bfd_boolean | |
2681 | aout_link_check_archive_element (bfd *abfd, | |
2682 | struct bfd_link_info *info, | |
2683 | bfd_boolean *pneeded) | |
2684 | { | |
2685 | if (! aout_get_external_symbols (abfd)) | |
2686 | return FALSE; | |
2687 | ||
2688 | if (! aout_link_check_ar_symbols (abfd, info, pneeded)) | |
2689 | return FALSE; | |
2690 | ||
2691 | if (*pneeded) | |
2692 | { | |
2693 | if (! aout_link_add_symbols (abfd, info)) | |
2694 | return FALSE; | |
2695 | } | |
2696 | ||
2697 | if (! info->keep_memory || ! *pneeded) | |
2698 | { | |
2699 | if (! aout_link_free_symbols (abfd)) | |
2700 | return FALSE; | |
2701 | } | |
2702 | ||
2703 | return TRUE; | |
2704 | } | |
2705 | ||
e135f41b NC |
2706 | /* Add all symbols from an object file to the hash table. */ |
2707 | ||
b34976b6 | 2708 | static bfd_boolean |
116c20d2 | 2709 | aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
e135f41b | 2710 | { |
b34976b6 | 2711 | bfd_boolean (*add_one_symbol) |
116c20d2 NC |
2712 | (struct bfd_link_info *, bfd *, const char *, flagword, asection *, |
2713 | bfd_vma, const char *, bfd_boolean, bfd_boolean, | |
2714 | struct bfd_link_hash_entry **); | |
e135f41b NC |
2715 | struct external_nlist *syms; |
2716 | bfd_size_type sym_count; | |
2717 | char *strings; | |
b34976b6 | 2718 | bfd_boolean copy; |
e135f41b | 2719 | struct aout_link_hash_entry **sym_hash; |
116c20d2 | 2720 | struct external_nlist *p; |
e135f41b NC |
2721 | struct external_nlist *pend; |
2722 | ||
2723 | syms = obj_aout_external_syms (abfd); | |
2724 | sym_count = obj_aout_external_sym_count (abfd); | |
2725 | strings = obj_aout_external_strings (abfd); | |
2726 | if (info->keep_memory) | |
b34976b6 | 2727 | copy = FALSE; |
e135f41b | 2728 | else |
b34976b6 | 2729 | copy = TRUE; |
e135f41b NC |
2730 | |
2731 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) | |
2732 | { | |
2733 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) | |
2734 | (abfd, info, &syms, &sym_count, &strings))) | |
b34976b6 | 2735 | return FALSE; |
e135f41b NC |
2736 | } |
2737 | ||
2738 | /* We keep a list of the linker hash table entries that correspond | |
2739 | to particular symbols. We could just look them up in the hash | |
2740 | table, but keeping the list is more efficient. Perhaps this | |
2741 | should be conditional on info->keep_memory. */ | |
116c20d2 NC |
2742 | sym_hash = bfd_alloc (abfd, |
2743 | sym_count * sizeof (struct aout_link_hash_entry *)); | |
e135f41b | 2744 | if (sym_hash == NULL && sym_count != 0) |
b34976b6 | 2745 | return FALSE; |
e135f41b NC |
2746 | obj_aout_sym_hashes (abfd) = sym_hash; |
2747 | ||
2748 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; | |
2749 | if (add_one_symbol == NULL) | |
2750 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
2751 | ||
2752 | p = syms; | |
2753 | pend = p + sym_count; | |
2754 | for (; p < pend; p++, sym_hash++) | |
2755 | { | |
2756 | int type; | |
2757 | const char *name; | |
2758 | bfd_vma value; | |
2759 | asection *section; | |
2760 | flagword flags; | |
2761 | const char *string; | |
2762 | ||
2763 | *sym_hash = NULL; | |
2764 | ||
dc810e39 | 2765 | type = H_GET_8 (abfd, p->e_type); |
e135f41b | 2766 | |
e135f41b NC |
2767 | name = strings + GET_WORD (abfd, p->e_strx); |
2768 | value = GET_WORD (abfd, p->e_value); | |
2769 | flags = BSF_GLOBAL; | |
2770 | string = NULL; | |
2771 | switch (type) | |
2772 | { | |
2773 | default: | |
2774 | abort (); | |
2775 | ||
2776 | case N_UNDF: | |
2777 | case N_ABS: | |
2778 | case N_TEXT: | |
2779 | case N_DATA: | |
2780 | case N_BSS: | |
2781 | case N_REG: | |
2782 | case N_FN: | |
2783 | /* Ignore symbols that are not externally visible. */ | |
2784 | continue; | |
2785 | ||
2786 | case N_UNDF | N_EXT: | |
2787 | if (value == 0) | |
2788 | { | |
2789 | section = bfd_und_section_ptr; | |
2790 | flags = 0; | |
2791 | } | |
2792 | else | |
2793 | section = bfd_com_section_ptr; | |
2794 | break; | |
2795 | case N_ABS | N_EXT: | |
2796 | section = bfd_abs_section_ptr; | |
2797 | break; | |
2798 | case N_TEXT | N_EXT: | |
2799 | section = obj_textsec (abfd); | |
2800 | value -= bfd_get_section_vma (abfd, section); | |
2801 | break; | |
2802 | case N_DATA | N_EXT: | |
2803 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
2804 | translate_from_native_sym_flags. */ | |
2805 | section = obj_datasec (abfd); | |
2806 | value -= bfd_get_section_vma (abfd, section); | |
2807 | break; | |
2808 | case N_BSS | N_EXT: | |
2809 | section = obj_bsssec (abfd); | |
2810 | value -= bfd_get_section_vma (abfd, section); | |
2811 | break; | |
2812 | } | |
2813 | ||
2814 | if (! ((*add_one_symbol) | |
b34976b6 | 2815 | (info, abfd, name, flags, section, value, string, copy, FALSE, |
e135f41b | 2816 | (struct bfd_link_hash_entry **) sym_hash))) |
b34976b6 | 2817 | return FALSE; |
e135f41b NC |
2818 | |
2819 | /* Restrict the maximum alignment of a common symbol based on | |
2820 | the architecture, since a.out has no way to represent | |
2821 | alignment requirements of a section in a .o file. FIXME: | |
2822 | This isn't quite right: it should use the architecture of the | |
2823 | output file, not the input files. */ | |
2824 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
2825 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
2826 | bfd_get_arch_info (abfd)->section_align_power)) | |
2827 | (*sym_hash)->root.u.c.p->alignment_power = | |
2828 | bfd_get_arch_info (abfd)->section_align_power; | |
2829 | ||
2830 | /* If this is a set symbol, and we are not building sets, then | |
2831 | it is possible for the hash entry to not have been set. In | |
2832 | such a case, treat the symbol as not globally defined. */ | |
2833 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
2834 | { | |
2835 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
2836 | *sym_hash = NULL; | |
2837 | } | |
2838 | } | |
2839 | ||
b34976b6 | 2840 | return TRUE; |
e135f41b NC |
2841 | } |
2842 | \f | |
116c20d2 | 2843 | /* Look up an entry in an the header file hash table. */ |
e135f41b NC |
2844 | |
2845 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
2846 | ((struct aout_link_includes_entry *) \ | |
2847 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
2848 | ||
e135f41b NC |
2849 | /* The function to create a new entry in the header file hash table. */ |
2850 | ||
2851 | static struct bfd_hash_entry * | |
116c20d2 NC |
2852 | aout_link_includes_newfunc (struct bfd_hash_entry *entry, |
2853 | struct bfd_hash_table *table, | |
2854 | const char *string) | |
e135f41b | 2855 | { |
116c20d2 | 2856 | struct aout_link_includes_entry * ret = |
e135f41b NC |
2857 | (struct aout_link_includes_entry *) entry; |
2858 | ||
2859 | /* Allocate the structure if it has not already been allocated by a | |
2860 | subclass. */ | |
116c20d2 NC |
2861 | if (ret == NULL) |
2862 | ret = bfd_hash_allocate (table, | |
2863 | sizeof (struct aout_link_includes_entry)); | |
2864 | if (ret == NULL) | |
2865 | return NULL; | |
e135f41b NC |
2866 | |
2867 | /* Call the allocation method of the superclass. */ | |
2868 | ret = ((struct aout_link_includes_entry *) | |
2869 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
2870 | if (ret) | |
116c20d2 NC |
2871 | /* Set local fields. */ |
2872 | ret->totals = NULL; | |
e135f41b NC |
2873 | |
2874 | return (struct bfd_hash_entry *) ret; | |
2875 | } | |
2876 | ||
116c20d2 NC |
2877 | static bfd_boolean |
2878 | aout_link_write_other_symbol (struct aout_link_hash_entry *h, void * data) | |
e135f41b | 2879 | { |
116c20d2 NC |
2880 | struct aout_final_link_info *finfo = (struct aout_final_link_info *) data; |
2881 | bfd *output_bfd; | |
2882 | int type; | |
2883 | bfd_vma val; | |
2884 | struct external_nlist outsym; | |
2885 | bfd_size_type indx; | |
2886 | bfd_size_type amt; | |
e135f41b | 2887 | |
116c20d2 NC |
2888 | if (h->root.type == bfd_link_hash_warning) |
2889 | { | |
2890 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
2891 | if (h->root.type == bfd_link_hash_new) | |
2892 | return TRUE; | |
2893 | } | |
e135f41b | 2894 | |
116c20d2 | 2895 | output_bfd = finfo->output_bfd; |
e135f41b | 2896 | |
116c20d2 | 2897 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) |
e135f41b | 2898 | { |
116c20d2 NC |
2899 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) |
2900 | (output_bfd, finfo->info, h))) | |
e135f41b | 2901 | { |
116c20d2 NC |
2902 | /* FIXME: No way to handle errors. */ |
2903 | abort (); | |
e135f41b | 2904 | } |
116c20d2 | 2905 | } |
e135f41b | 2906 | |
116c20d2 NC |
2907 | if (h->written) |
2908 | return TRUE; | |
e135f41b | 2909 | |
116c20d2 | 2910 | h->written = TRUE; |
e135f41b | 2911 | |
116c20d2 NC |
2912 | /* An indx of -2 means the symbol must be written. */ |
2913 | if (h->indx != -2 | |
2914 | && (finfo->info->strip == strip_all | |
2915 | || (finfo->info->strip == strip_some | |
2916 | && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string, | |
2917 | FALSE, FALSE) == NULL))) | |
2918 | return TRUE; | |
e135f41b | 2919 | |
116c20d2 | 2920 | switch (h->root.type) |
e135f41b | 2921 | { |
116c20d2 NC |
2922 | default: |
2923 | abort (); | |
2924 | /* Avoid variable not initialized warnings. */ | |
2925 | return TRUE; | |
2926 | case bfd_link_hash_new: | |
2927 | /* This can happen for set symbols when sets are not being | |
2928 | built. */ | |
2929 | return TRUE; | |
2930 | case bfd_link_hash_undefined: | |
2931 | type = N_UNDF | N_EXT; | |
2932 | val = 0; | |
2933 | break; | |
2934 | case bfd_link_hash_defined: | |
2935 | case bfd_link_hash_defweak: | |
2936 | { | |
2937 | asection *sec; | |
2938 | ||
2939 | sec = h->root.u.def.section->output_section; | |
2940 | BFD_ASSERT (bfd_is_abs_section (sec) | |
2941 | || sec->owner == output_bfd); | |
2942 | if (sec == obj_textsec (output_bfd)) | |
2943 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
2944 | else if (sec == obj_datasec (output_bfd)) | |
2945 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
2946 | else if (sec == obj_bsssec (output_bfd)) | |
2947 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
2948 | else | |
2949 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
2950 | type |= N_EXT; | |
2951 | val = (h->root.u.def.value | |
2952 | + sec->vma | |
2953 | + h->root.u.def.section->output_offset); | |
2954 | } | |
2955 | break; | |
2956 | case bfd_link_hash_common: | |
2957 | type = N_UNDF | N_EXT; | |
2958 | val = h->root.u.c.size; | |
2959 | break; | |
2960 | case bfd_link_hash_undefweak: | |
2961 | type = N_WEAKU; | |
2962 | val = 0; | |
2963 | case bfd_link_hash_indirect: | |
2964 | case bfd_link_hash_warning: | |
2965 | /* FIXME: Ignore these for now. The circumstances under which | |
2966 | they should be written out are not clear to me. */ | |
2967 | return TRUE; | |
e135f41b NC |
2968 | } |
2969 | ||
116c20d2 NC |
2970 | H_PUT_8 (output_bfd, type, outsym.e_type); |
2971 | indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string, | |
2972 | FALSE); | |
2973 | if (indx == (bfd_size_type) -1) | |
2974 | /* FIXME: No way to handle errors. */ | |
2975 | abort (); | |
e135f41b | 2976 | |
116c20d2 NC |
2977 | PUT_WORD (output_bfd, indx, outsym.e_strx); |
2978 | PUT_WORD (output_bfd, val, outsym.e_value); | |
e135f41b | 2979 | |
116c20d2 NC |
2980 | amt = EXTERNAL_NLIST_SIZE; |
2981 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0 | |
2982 | || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt) | |
2983 | /* FIXME: No way to handle errors. */ | |
2984 | abort (); | |
e135f41b | 2985 | |
116c20d2 NC |
2986 | finfo->symoff += amt; |
2987 | h->indx = obj_aout_external_sym_count (output_bfd); | |
2988 | ++obj_aout_external_sym_count (output_bfd); | |
e135f41b | 2989 | |
116c20d2 NC |
2990 | return TRUE; |
2991 | } | |
e135f41b | 2992 | |
116c20d2 | 2993 | /* Handle a link order which is supposed to generate a reloc. */ |
e135f41b | 2994 | |
116c20d2 NC |
2995 | static bfd_boolean |
2996 | aout_link_reloc_link_order (struct aout_final_link_info *finfo, | |
2997 | asection *o, | |
2998 | struct bfd_link_order *p) | |
2999 | { | |
3000 | struct bfd_link_order_reloc *pr; | |
3001 | int r_index; | |
3002 | int r_extern; | |
3003 | reloc_howto_type *howto; | |
3004 | file_ptr *reloff_ptr; | |
3005 | struct reloc_std_external srel; | |
3006 | void * rel_ptr; | |
3007 | bfd_size_type rel_size; | |
e135f41b | 3008 | |
116c20d2 | 3009 | pr = p->u.reloc.p; |
e135f41b | 3010 | |
116c20d2 | 3011 | if (p->type == bfd_section_reloc_link_order) |
e135f41b | 3012 | { |
116c20d2 NC |
3013 | r_extern = 0; |
3014 | if (bfd_is_abs_section (pr->u.section)) | |
3015 | r_index = N_ABS | N_EXT; | |
3016 | else | |
e135f41b | 3017 | { |
116c20d2 NC |
3018 | BFD_ASSERT (pr->u.section->owner == finfo->output_bfd); |
3019 | r_index = pr->u.section->target_index; | |
e135f41b NC |
3020 | } |
3021 | } | |
116c20d2 | 3022 | else |
e135f41b | 3023 | { |
116c20d2 | 3024 | struct aout_link_hash_entry *h; |
e135f41b | 3025 | |
116c20d2 NC |
3026 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); |
3027 | r_extern = 1; | |
3028 | h = ((struct aout_link_hash_entry *) | |
3029 | bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info, | |
3030 | pr->u.name, FALSE, FALSE, TRUE)); | |
3031 | if (h != NULL | |
3032 | && h->indx >= 0) | |
3033 | r_index = h->indx; | |
3034 | else if (h != NULL) | |
3035 | { | |
3036 | /* We decided to strip this symbol, but it turns out that we | |
3037 | can't. Note that we lose the other and desc information | |
3038 | here. I don't think that will ever matter for a global | |
3039 | symbol. */ | |
3040 | h->indx = -2; | |
3041 | h->written = FALSE; | |
3042 | if (! aout_link_write_other_symbol (h, (void *) finfo)) | |
3043 | return FALSE; | |
3044 | r_index = h->indx; | |
e135f41b | 3045 | } |
116c20d2 | 3046 | else |
e135f41b | 3047 | { |
116c20d2 NC |
3048 | if (! ((*finfo->info->callbacks->unattached_reloc) |
3049 | (finfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0))) | |
3050 | return FALSE; | |
3051 | r_index = 0; | |
e135f41b NC |
3052 | } |
3053 | } | |
3054 | ||
116c20d2 NC |
3055 | howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc); |
3056 | if (howto == 0) | |
e135f41b | 3057 | { |
116c20d2 NC |
3058 | bfd_set_error (bfd_error_bad_value); |
3059 | return FALSE; | |
e135f41b NC |
3060 | } |
3061 | ||
116c20d2 NC |
3062 | if (o == obj_textsec (finfo->output_bfd)) |
3063 | reloff_ptr = &finfo->treloff; | |
3064 | else if (o == obj_datasec (finfo->output_bfd)) | |
3065 | reloff_ptr = &finfo->dreloff; | |
3066 | else | |
3067 | abort (); | |
e135f41b | 3068 | |
116c20d2 NC |
3069 | #ifdef MY_put_reloc |
3070 | MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto, | |
3071 | &srel); | |
3072 | #else | |
3073 | { | |
3074 | int r_pcrel; | |
3075 | int r_baserel; | |
3076 | int r_jmptable; | |
3077 | int r_relative; | |
3078 | int r_length; | |
e135f41b | 3079 | |
116c20d2 | 3080 | fprintf (stderr, "TODO: line %d in bfd/pdp11.c\n", __LINE__); |
e135f41b | 3081 | |
116c20d2 NC |
3082 | r_pcrel = howto->pc_relative; |
3083 | r_baserel = (howto->type & 8) != 0; | |
3084 | r_jmptable = (howto->type & 16) != 0; | |
3085 | r_relative = (howto->type & 32) != 0; | |
3086 | r_length = howto->size; | |
e135f41b | 3087 | |
116c20d2 NC |
3088 | PUT_WORD (finfo->output_bfd, p->offset, srel.r_address); |
3089 | if (bfd_header_big_endian (finfo->output_bfd)) | |
3090 | { | |
3091 | srel.r_index[0] = r_index >> 16; | |
3092 | srel.r_index[1] = r_index >> 8; | |
3093 | srel.r_index[2] = r_index; | |
3094 | srel.r_type[0] = | |
3095 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
3096 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
3097 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
3098 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
3099 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
3100 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
3101 | } | |
3102 | else | |
3103 | { | |
3104 | srel.r_index[2] = r_index >> 16; | |
3105 | srel.r_index[1] = r_index >> 8; | |
3106 | srel.r_index[0] = r_index; | |
3107 | srel.r_type[0] = | |
3108 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
3109 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
3110 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
3111 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
3112 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
3113 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
3114 | } | |
3115 | } | |
3116 | #endif | |
3117 | rel_ptr = (void *) &srel; | |
e135f41b | 3118 | |
116c20d2 NC |
3119 | /* We have to write the addend into the object file, since |
3120 | standard a.out relocs are in place. It would be more | |
3121 | reliable if we had the current contents of the file here, | |
3122 | rather than assuming zeroes, but we can't read the file since | |
3123 | it was opened using bfd_openw. */ | |
3124 | if (pr->addend != 0) | |
e135f41b | 3125 | { |
116c20d2 NC |
3126 | bfd_size_type size; |
3127 | bfd_reloc_status_type r; | |
3128 | bfd_byte *buf; | |
3129 | bfd_boolean ok; | |
3130 | ||
3131 | size = bfd_get_reloc_size (howto); | |
3132 | buf = bfd_zmalloc (size); | |
3133 | if (buf == NULL) | |
3134 | return FALSE; | |
3135 | r = MY_relocate_contents (howto, finfo->output_bfd, | |
3136 | pr->addend, buf); | |
3137 | switch (r) | |
3138 | { | |
3139 | case bfd_reloc_ok: | |
3140 | break; | |
3141 | default: | |
3142 | case bfd_reloc_outofrange: | |
3143 | abort (); | |
3144 | case bfd_reloc_overflow: | |
3145 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
3146 | (finfo->info, NULL, | |
3147 | (p->type == bfd_section_reloc_link_order | |
3148 | ? bfd_section_name (finfo->output_bfd, | |
3149 | pr->u.section) | |
3150 | : pr->u.name), | |
3151 | howto->name, pr->addend, NULL, | |
3152 | (asection *) NULL, (bfd_vma) 0))) | |
3153 | { | |
3154 | free (buf); | |
3155 | return FALSE; | |
3156 | } | |
3157 | break; | |
3158 | } | |
3159 | ok = bfd_set_section_contents (finfo->output_bfd, o, | |
3160 | (void *) buf, | |
3161 | (file_ptr) p->offset, | |
3162 | size); | |
3163 | free (buf); | |
3164 | if (! ok) | |
3165 | return FALSE; | |
e135f41b NC |
3166 | } |
3167 | ||
116c20d2 NC |
3168 | rel_size = obj_reloc_entry_size (finfo->output_bfd); |
3169 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
3170 | || bfd_bwrite (rel_ptr, rel_size, finfo->output_bfd) != rel_size) | |
b34976b6 | 3171 | return FALSE; |
e135f41b | 3172 | |
116c20d2 | 3173 | *reloff_ptr += rel_size; |
e135f41b | 3174 | |
116c20d2 NC |
3175 | /* Assert that the relocs have not run into the symbols, and that n |
3176 | the text relocs have not run into the data relocs. */ | |
3177 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
3178 | && (reloff_ptr != &finfo->treloff | |
3179 | || (*reloff_ptr | |
3180 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
e135f41b | 3181 | |
116c20d2 NC |
3182 | return TRUE; |
3183 | } | |
e135f41b | 3184 | |
116c20d2 NC |
3185 | /* Get the section corresponding to a reloc index. */ |
3186 | ||
3187 | static inline asection * | |
3188 | aout_reloc_type_to_section (bfd *abfd, int type) | |
3189 | { | |
3190 | switch (type) | |
e135f41b | 3191 | { |
116c20d2 NC |
3192 | case RTEXT: return obj_textsec (abfd); |
3193 | case RDATA: return obj_datasec (abfd); | |
3194 | case RBSS: return obj_bsssec (abfd); | |
3195 | case RABS: return bfd_abs_section_ptr; | |
3196 | case REXT: return bfd_und_section_ptr; | |
3197 | default: abort (); | |
e135f41b | 3198 | } |
e135f41b NC |
3199 | } |
3200 | ||
b34976b6 | 3201 | static bfd_boolean |
116c20d2 NC |
3202 | pdp11_aout_link_input_section (struct aout_final_link_info *finfo, |
3203 | bfd *input_bfd, | |
3204 | asection *input_section, | |
3205 | bfd_byte *relocs, | |
3206 | bfd_size_type rel_size, | |
3207 | bfd_byte *contents) | |
e135f41b | 3208 | { |
116c20d2 NC |
3209 | bfd_boolean (*check_dynamic_reloc) |
3210 | (struct bfd_link_info *, bfd *, asection *, | |
3211 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
3212 | bfd_vma *); | |
e135f41b | 3213 | bfd *output_bfd; |
116c20d2 NC |
3214 | bfd_boolean relocatable; |
3215 | struct external_nlist *syms; | |
e135f41b | 3216 | char *strings; |
116c20d2 | 3217 | struct aout_link_hash_entry **sym_hashes; |
e135f41b | 3218 | int *symbol_map; |
116c20d2 NC |
3219 | bfd_size_type reloc_count; |
3220 | bfd_byte *rel; | |
3221 | bfd_byte *rel_end; | |
e135f41b NC |
3222 | |
3223 | output_bfd = finfo->output_bfd; | |
116c20d2 | 3224 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
e135f41b | 3225 | |
116c20d2 NC |
3226 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_SIZE); |
3227 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
3228 | == output_bfd->xvec->header_byteorder); | |
e135f41b | 3229 | |
116c20d2 NC |
3230 | relocatable = finfo->info->relocatable; |
3231 | syms = obj_aout_external_syms (input_bfd); | |
3232 | strings = obj_aout_external_strings (input_bfd); | |
3233 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
e135f41b | 3234 | symbol_map = finfo->symbol_map; |
116c20d2 NC |
3235 | |
3236 | reloc_count = rel_size / RELOC_SIZE; | |
3237 | rel = relocs; | |
3238 | rel_end = rel + rel_size; | |
3239 | for (; rel < rel_end; rel += RELOC_SIZE) | |
e135f41b | 3240 | { |
116c20d2 NC |
3241 | bfd_vma r_addr; |
3242 | int r_index; | |
3243 | int r_type; | |
3244 | int r_pcrel; | |
3245 | int r_extern; | |
3246 | reloc_howto_type *howto; | |
3247 | struct aout_link_hash_entry *h = NULL; | |
3248 | bfd_vma relocation; | |
3249 | bfd_reloc_status_type r; | |
3250 | int reloc_entry; | |
e135f41b | 3251 | |
116c20d2 NC |
3252 | reloc_entry = GET_WORD (input_bfd, (void *) rel); |
3253 | if (reloc_entry == 0) | |
e135f41b NC |
3254 | continue; |
3255 | ||
116c20d2 NC |
3256 | { |
3257 | unsigned int howto_idx; | |
e135f41b | 3258 | |
116c20d2 NC |
3259 | r_index = (reloc_entry & RIDXMASK) >> 4; |
3260 | r_type = reloc_entry & RTYPE; | |
3261 | r_pcrel = reloc_entry & RELFLG; | |
3262 | r_addr = (char *) rel - (char *) relocs; | |
e135f41b | 3263 | |
116c20d2 | 3264 | r_extern = (r_type == REXT); |
e135f41b | 3265 | |
116c20d2 NC |
3266 | howto_idx = r_pcrel; |
3267 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_pdp11)); | |
3268 | howto = howto_table_pdp11 + howto_idx; | |
3269 | } | |
3270 | ||
3271 | if (relocatable) | |
e135f41b | 3272 | { |
116c20d2 NC |
3273 | /* We are generating a relocatable output file, and must |
3274 | modify the reloc accordingly. */ | |
3275 | if (r_extern) | |
3276 | { | |
3277 | /* If we know the symbol this relocation is against, | |
3278 | convert it into a relocation against a section. This | |
3279 | is what the native linker does. */ | |
3280 | h = sym_hashes[r_index]; | |
3281 | if (h != NULL | |
3282 | && (h->root.type == bfd_link_hash_defined | |
3283 | || h->root.type == bfd_link_hash_defweak)) | |
3284 | { | |
3285 | asection *output_section; | |
e135f41b | 3286 | |
116c20d2 NC |
3287 | /* Compute a new r_index. */ |
3288 | output_section = h->root.u.def.section->output_section; | |
e135f41b | 3289 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 | 3290 | r_type = N_TEXT; |
e135f41b | 3291 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 | 3292 | r_type = N_DATA; |
e135f41b | 3293 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 | 3294 | r_type = N_BSS; |
e135f41b | 3295 | else |
116c20d2 | 3296 | r_type = N_ABS; |
e135f41b | 3297 | |
116c20d2 NC |
3298 | /* Add the symbol value and the section VMA to the |
3299 | addend stored in the contents. */ | |
3300 | relocation = (h->root.u.def.value | |
3301 | + output_section->vma | |
3302 | + h->root.u.def.section->output_offset); | |
e135f41b | 3303 | } |
116c20d2 | 3304 | else |
e135f41b | 3305 | { |
116c20d2 NC |
3306 | /* We must change r_index according to the symbol |
3307 | map. */ | |
3308 | r_index = symbol_map[r_index]; | |
e135f41b | 3309 | |
116c20d2 | 3310 | if (r_index == -1) |
e135f41b | 3311 | { |
116c20d2 | 3312 | if (h != NULL) |
e135f41b | 3313 | { |
116c20d2 NC |
3314 | /* We decided to strip this symbol, but it |
3315 | turns out that we can't. Note that we | |
3316 | lose the other and desc information here. | |
3317 | I don't think that will ever matter for a | |
3318 | global symbol. */ | |
3319 | if (h->indx < 0) | |
e135f41b | 3320 | { |
116c20d2 NC |
3321 | h->indx = -2; |
3322 | h->written = FALSE; | |
3323 | if (! aout_link_write_other_symbol (h, | |
3324 | (void *) finfo)) | |
3325 | return FALSE; | |
e135f41b | 3326 | } |
116c20d2 NC |
3327 | r_index = h->indx; |
3328 | } | |
3329 | else | |
3330 | { | |
3331 | const char *name; | |
3332 | ||
3333 | name = strings + GET_WORD (input_bfd, | |
3334 | syms[r_index].e_strx); | |
3335 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
3336 | (finfo->info, name, input_bfd, input_section, | |
3337 | r_addr))) | |
3338 | return FALSE; | |
3339 | r_index = 0; | |
e135f41b NC |
3340 | } |
3341 | } | |
116c20d2 NC |
3342 | |
3343 | relocation = 0; | |
e135f41b NC |
3344 | } |
3345 | ||
116c20d2 NC |
3346 | /* Write out the new r_index value. */ |
3347 | reloc_entry = GET_WORD (input_bfd, rel); | |
3348 | reloc_entry &= RIDXMASK; | |
3349 | reloc_entry |= r_index << 4; | |
3350 | PUT_WORD (input_bfd, reloc_entry, rel); | |
3351 | } | |
3352 | else | |
3353 | { | |
3354 | asection *section; | |
3355 | ||
3356 | /* This is a relocation against a section. We must | |
3357 | adjust by the amount that the section moved. */ | |
3358 | section = aout_reloc_type_to_section (input_bfd, r_type); | |
3359 | relocation = (section->output_section->vma | |
3360 | + section->output_offset | |
3361 | - section->vma); | |
3362 | } | |
3363 | ||
3364 | /* Change the address of the relocation. */ | |
3365 | fprintf (stderr, "TODO: change the address of the relocation\n"); | |
3366 | ||
3367 | /* Adjust a PC relative relocation by removing the reference | |
3368 | to the original address in the section and including the | |
3369 | reference to the new address. */ | |
3370 | if (r_pcrel) | |
3371 | relocation -= (input_section->output_section->vma | |
3372 | + input_section->output_offset | |
3373 | - input_section->vma); | |
3374 | ||
3375 | #ifdef MY_relocatable_reloc | |
3376 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
3377 | #endif | |
3378 | ||
3379 | if (relocation == 0) | |
3380 | r = bfd_reloc_ok; | |
3381 | else | |
3382 | r = MY_relocate_contents (howto, | |
3383 | input_bfd, relocation, | |
3384 | contents + r_addr); | |
3385 | } | |
3386 | else | |
3387 | { | |
3388 | bfd_boolean hundef; | |
3389 | ||
3390 | /* We are generating an executable, and must do a full | |
3391 | relocation. */ | |
3392 | hundef = FALSE; | |
3393 | if (r_extern) | |
3394 | { | |
3395 | h = sym_hashes[r_index]; | |
3396 | ||
3397 | if (h != NULL | |
3398 | && (h->root.type == bfd_link_hash_defined | |
3399 | || h->root.type == bfd_link_hash_defweak)) | |
e135f41b | 3400 | { |
116c20d2 NC |
3401 | relocation = (h->root.u.def.value |
3402 | + h->root.u.def.section->output_section->vma | |
3403 | + h->root.u.def.section->output_offset); | |
e135f41b | 3404 | } |
116c20d2 NC |
3405 | else if (h != NULL |
3406 | && h->root.type == bfd_link_hash_undefweak) | |
3407 | relocation = 0; | |
e135f41b NC |
3408 | else |
3409 | { | |
116c20d2 NC |
3410 | hundef = TRUE; |
3411 | relocation = 0; | |
3412 | } | |
3413 | } | |
3414 | else | |
3415 | { | |
3416 | asection *section; | |
e135f41b | 3417 | |
116c20d2 NC |
3418 | section = aout_reloc_type_to_section (input_bfd, r_type); |
3419 | relocation = (section->output_section->vma | |
3420 | + section->output_offset | |
3421 | - section->vma); | |
3422 | if (r_pcrel) | |
3423 | relocation += input_section->vma; | |
3424 | } | |
e135f41b | 3425 | |
116c20d2 NC |
3426 | if (check_dynamic_reloc != NULL) |
3427 | { | |
3428 | bfd_boolean skip; | |
e135f41b | 3429 | |
116c20d2 NC |
3430 | if (! ((*check_dynamic_reloc) |
3431 | (finfo->info, input_bfd, input_section, h, | |
3432 | (void *) rel, contents, &skip, &relocation))) | |
3433 | return FALSE; | |
3434 | if (skip) | |
3435 | continue; | |
3436 | } | |
3437 | ||
3438 | /* Now warn if a global symbol is undefined. We could not | |
3439 | do this earlier, because check_dynamic_reloc might want | |
3440 | to skip this reloc. */ | |
3441 | if (hundef && ! finfo->info->shared) | |
3442 | { | |
3443 | const char *name; | |
3444 | ||
3445 | if (h != NULL) | |
3446 | name = h->root.root.string; | |
3447 | else | |
3448 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
3449 | if (! ((*finfo->info->callbacks->undefined_symbol) | |
3450 | (finfo->info, name, input_bfd, input_section, | |
3451 | r_addr, TRUE))) | |
3452 | return FALSE; | |
e135f41b | 3453 | } |
116c20d2 NC |
3454 | |
3455 | r = MY_final_link_relocate (howto, | |
3456 | input_bfd, input_section, | |
3457 | contents, r_addr, relocation, | |
3458 | (bfd_vma) 0); | |
e135f41b NC |
3459 | } |
3460 | ||
116c20d2 | 3461 | if (r != bfd_reloc_ok) |
e135f41b | 3462 | { |
116c20d2 NC |
3463 | switch (r) |
3464 | { | |
3465 | default: | |
3466 | case bfd_reloc_outofrange: | |
3467 | abort (); | |
3468 | case bfd_reloc_overflow: | |
3469 | { | |
3470 | const char *name; | |
3471 | ||
3472 | if (h != NULL) | |
3473 | name = NULL; | |
3474 | else if (r_extern) | |
3475 | name = strings + GET_WORD (input_bfd, | |
3476 | syms[r_index].e_strx); | |
3477 | else | |
3478 | { | |
3479 | asection *s; | |
3480 | ||
3481 | s = aout_reloc_type_to_section (input_bfd, r_type); | |
3482 | name = bfd_section_name (input_bfd, s); | |
3483 | } | |
3484 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
3485 | (finfo->info, (h ? &h->root : NULL), name, | |
3486 | howto->name, (bfd_vma) 0, input_bfd, | |
3487 | input_section, r_addr))) | |
3488 | return FALSE; | |
3489 | } | |
3490 | break; | |
3491 | } | |
e135f41b | 3492 | } |
e135f41b NC |
3493 | } |
3494 | ||
116c20d2 NC |
3495 | return TRUE; |
3496 | } | |
3497 | ||
3498 | /* Link an a.out section into the output file. */ | |
3499 | ||
3500 | static bfd_boolean | |
3501 | aout_link_input_section (struct aout_final_link_info *finfo, | |
3502 | bfd *input_bfd, | |
3503 | asection *input_section, | |
3504 | file_ptr *reloff_ptr, | |
3505 | bfd_size_type rel_size) | |
3506 | { | |
3507 | bfd_size_type input_size; | |
3508 | void * relocs; | |
3509 | ||
3510 | /* Get the section contents. */ | |
3511 | input_size = input_section->size; | |
3512 | if (! bfd_get_section_contents (input_bfd, input_section, | |
3513 | (void *) finfo->contents, | |
3514 | (file_ptr) 0, input_size)) | |
3515 | return FALSE; | |
3516 | ||
3517 | /* Read in the relocs if we haven't already done it. */ | |
3518 | if (aout_section_data (input_section) != NULL | |
3519 | && aout_section_data (input_section)->relocs != NULL) | |
3520 | relocs = aout_section_data (input_section)->relocs; | |
3521 | else | |
e135f41b | 3522 | { |
116c20d2 NC |
3523 | relocs = finfo->relocs; |
3524 | if (rel_size > 0) | |
3525 | { | |
3526 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
3527 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) | |
3528 | return FALSE; | |
3529 | } | |
3530 | } | |
e135f41b | 3531 | |
116c20d2 NC |
3532 | /* Relocate the section contents. */ |
3533 | if (! pdp11_aout_link_input_section (finfo, input_bfd, input_section, | |
3534 | (bfd_byte *) relocs, | |
3535 | rel_size, finfo->contents)) | |
3536 | return FALSE; | |
3537 | ||
3538 | /* Write out the section contents. */ | |
3539 | if (! bfd_set_section_contents (finfo->output_bfd, | |
3540 | input_section->output_section, | |
3541 | (void *) finfo->contents, | |
3542 | (file_ptr) input_section->output_offset, | |
3543 | input_size)) | |
3544 | return FALSE; | |
3545 | ||
3546 | /* If we are producing relocatable output, the relocs were | |
3547 | modified, and we now write them out. */ | |
3548 | if (finfo->info->relocatable && rel_size > 0) | |
3549 | { | |
3550 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) | |
3551 | return FALSE; | |
3552 | if (bfd_bwrite (relocs, rel_size, finfo->output_bfd) != rel_size) | |
3553 | return FALSE; | |
3554 | *reloff_ptr += rel_size; | |
3555 | ||
3556 | /* Assert that the relocs have not run into the symbols, and | |
3557 | that if these are the text relocs they have not run into the | |
3558 | data relocs. */ | |
3559 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
3560 | && (reloff_ptr != &finfo->treloff | |
3561 | || (*reloff_ptr | |
3562 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
3563 | } | |
3564 | ||
3565 | return TRUE; | |
3566 | } | |
3567 | ||
3568 | /* Link an a.out input BFD into the output file. */ | |
3569 | ||
3570 | static bfd_boolean | |
3571 | aout_link_input_bfd (struct aout_final_link_info *finfo, bfd *input_bfd) | |
3572 | { | |
3573 | bfd_size_type sym_count; | |
3574 | ||
3575 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); | |
3576 | ||
3577 | /* If this is a dynamic object, it may need special handling. */ | |
3578 | if ((input_bfd->flags & DYNAMIC) != 0 | |
3579 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
3580 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
3581 | (finfo->info, input_bfd)); | |
3582 | ||
3583 | /* Get the symbols. We probably have them already, unless | |
3584 | finfo->info->keep_memory is FALSE. */ | |
3585 | if (! aout_get_external_symbols (input_bfd)) | |
3586 | return FALSE; | |
3587 | ||
3588 | sym_count = obj_aout_external_sym_count (input_bfd); | |
3589 | ||
3590 | /* Write out the symbols and get a map of the new indices. The map | |
3591 | is placed into finfo->symbol_map. */ | |
3592 | if (! aout_link_write_symbols (finfo, input_bfd)) | |
3593 | return FALSE; | |
3594 | ||
3595 | /* Relocate and write out the sections. These functions use the | |
3596 | symbol map created by aout_link_write_symbols. The linker_mark | |
3597 | field will be set if these sections are to be included in the | |
3598 | link, which will normally be the case. */ | |
3599 | if (obj_textsec (input_bfd)->linker_mark) | |
3600 | { | |
3601 | if (! aout_link_input_section (finfo, input_bfd, | |
3602 | obj_textsec (input_bfd), | |
3603 | &finfo->treloff, | |
3604 | exec_hdr (input_bfd)->a_trsize)) | |
3605 | return FALSE; | |
3606 | } | |
3607 | if (obj_datasec (input_bfd)->linker_mark) | |
3608 | { | |
3609 | if (! aout_link_input_section (finfo, input_bfd, | |
3610 | obj_datasec (input_bfd), | |
3611 | &finfo->dreloff, | |
3612 | exec_hdr (input_bfd)->a_drsize)) | |
b34976b6 | 3613 | return FALSE; |
116c20d2 NC |
3614 | } |
3615 | ||
3616 | /* If we are not keeping memory, we don't need the symbols any | |
3617 | longer. We still need them if we are keeping memory, because the | |
3618 | strings in the hash table point into them. */ | |
3619 | if (! finfo->info->keep_memory) | |
3620 | { | |
3621 | if (! aout_link_free_symbols (input_bfd)) | |
b34976b6 | 3622 | return FALSE; |
e135f41b NC |
3623 | } |
3624 | ||
b34976b6 | 3625 | return TRUE; |
e135f41b NC |
3626 | } |
3627 | ||
116c20d2 NC |
3628 | /* Do the final link step. This is called on the output BFD. The |
3629 | INFO structure should point to a list of BFDs linked through the | |
3630 | link_next field which can be used to find each BFD which takes part | |
3631 | in the output. Also, each section in ABFD should point to a list | |
3632 | of bfd_link_order structures which list all the input sections for | |
3633 | the output section. */ | |
e135f41b | 3634 | |
116c20d2 NC |
3635 | bfd_boolean |
3636 | NAME (aout, final_link) (bfd *abfd, | |
3637 | struct bfd_link_info *info, | |
3638 | void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *)) | |
e135f41b | 3639 | { |
116c20d2 NC |
3640 | struct aout_final_link_info aout_info; |
3641 | bfd_boolean includes_hash_initialized = FALSE; | |
3642 | bfd *sub; | |
3643 | bfd_size_type trsize, drsize; | |
3644 | bfd_size_type max_contents_size; | |
3645 | bfd_size_type max_relocs_size; | |
3646 | bfd_size_type max_sym_count; | |
3647 | bfd_size_type text_size; | |
3648 | file_ptr text_end; | |
3649 | struct bfd_link_order *p; | |
3650 | asection *o; | |
3651 | bfd_boolean have_link_order_relocs; | |
e135f41b | 3652 | |
116c20d2 NC |
3653 | if (info->shared) |
3654 | abfd->flags |= DYNAMIC; | |
e92d460e | 3655 | |
116c20d2 NC |
3656 | aout_info.info = info; |
3657 | aout_info.output_bfd = abfd; | |
3658 | aout_info.contents = NULL; | |
3659 | aout_info.relocs = NULL; | |
3660 | aout_info.symbol_map = NULL; | |
3661 | aout_info.output_syms = NULL; | |
e135f41b | 3662 | |
66eb6687 AM |
3663 | if (!bfd_hash_table_init_n (&aout_info.includes.root, |
3664 | aout_link_includes_newfunc, | |
3665 | sizeof (struct aout_link_includes_entry), | |
3666 | 251)) | |
116c20d2 NC |
3667 | goto error_return; |
3668 | includes_hash_initialized = TRUE; | |
3669 | ||
3670 | /* Figure out the largest section size. Also, if generating | |
3671 | relocatable output, count the relocs. */ | |
3672 | trsize = 0; | |
3673 | drsize = 0; | |
3674 | max_contents_size = 0; | |
3675 | max_relocs_size = 0; | |
3676 | max_sym_count = 0; | |
3677 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
e135f41b | 3678 | { |
116c20d2 NC |
3679 | size_t sz; |
3680 | ||
3681 | if (info->relocatable) | |
e135f41b | 3682 | { |
116c20d2 NC |
3683 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3684 | { | |
3685 | trsize += exec_hdr (sub)->a_trsize; | |
3686 | drsize += exec_hdr (sub)->a_drsize; | |
3687 | } | |
3688 | else | |
3689 | { | |
3690 | /* FIXME: We need to identify the .text and .data sections | |
3691 | and call get_reloc_upper_bound and canonicalize_reloc to | |
3692 | work out the number of relocs needed, and then multiply | |
3693 | by the reloc size. */ | |
3694 | (*_bfd_error_handler) | |
3695 | ("%s: relocatable link from %s to %s not supported", | |
3696 | bfd_get_filename (abfd), | |
3697 | sub->xvec->name, abfd->xvec->name); | |
3698 | bfd_set_error (bfd_error_invalid_operation); | |
3699 | goto error_return; | |
3700 | } | |
e135f41b | 3701 | } |
e135f41b | 3702 | |
116c20d2 NC |
3703 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3704 | { | |
3705 | sz = obj_textsec (sub)->size; | |
3706 | if (sz > max_contents_size) | |
3707 | max_contents_size = sz; | |
3708 | sz = obj_datasec (sub)->size; | |
3709 | if (sz > max_contents_size) | |
3710 | max_contents_size = sz; | |
e135f41b | 3711 | |
116c20d2 NC |
3712 | sz = exec_hdr (sub)->a_trsize; |
3713 | if (sz > max_relocs_size) | |
3714 | max_relocs_size = sz; | |
3715 | sz = exec_hdr (sub)->a_drsize; | |
3716 | if (sz > max_relocs_size) | |
3717 | max_relocs_size = sz; | |
e135f41b | 3718 | |
116c20d2 NC |
3719 | sz = obj_aout_external_sym_count (sub); |
3720 | if (sz > max_sym_count) | |
3721 | max_sym_count = sz; | |
3722 | } | |
e135f41b NC |
3723 | } |
3724 | ||
116c20d2 | 3725 | if (info->relocatable) |
e135f41b | 3726 | { |
116c20d2 NC |
3727 | if (obj_textsec (abfd) != NULL) |
3728 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
8423293d | 3729 | ->map_head.link_order) |
116c20d2 NC |
3730 | * obj_reloc_entry_size (abfd)); |
3731 | if (obj_datasec (abfd) != NULL) | |
3732 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
8423293d | 3733 | ->map_head.link_order) |
116c20d2 | 3734 | * obj_reloc_entry_size (abfd)); |
e135f41b | 3735 | } |
e135f41b | 3736 | |
116c20d2 NC |
3737 | exec_hdr (abfd)->a_trsize = trsize; |
3738 | exec_hdr (abfd)->a_drsize = drsize; | |
3739 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); | |
3740 | ||
3741 | /* Adjust the section sizes and vmas according to the magic number. | |
3742 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
3743 | filepos for each section. */ | |
3744 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
3745 | goto error_return; | |
3746 | ||
3747 | /* The relocation and symbol file positions differ among a.out | |
3748 | targets. We are passed a callback routine from the backend | |
3749 | specific code to handle this. | |
3750 | FIXME: At this point we do not know how much space the symbol | |
3751 | table will require. This will not work for any (nonstandard) | |
3752 | a.out target that needs to know the symbol table size before it | |
3753 | can compute the relocation file positions. This may or may not | |
3754 | be the case for the hp300hpux target, for example. */ | |
3755 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, | |
3756 | &aout_info.symoff); | |
3757 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
3758 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
3759 | obj_sym_filepos (abfd) = aout_info.symoff; | |
3760 | ||
3761 | /* We keep a count of the symbols as we output them. */ | |
3762 | obj_aout_external_sym_count (abfd) = 0; | |
3763 | ||
3764 | /* We accumulate the string table as we write out the symbols. */ | |
3765 | aout_info.strtab = _bfd_stringtab_init (); | |
3766 | if (aout_info.strtab == NULL) | |
3767 | goto error_return; | |
3768 | ||
3769 | /* Allocate buffers to hold section contents and relocs. */ | |
3770 | aout_info.contents = bfd_malloc (max_contents_size); | |
3771 | aout_info.relocs = bfd_malloc (max_relocs_size); | |
3772 | aout_info.symbol_map = bfd_malloc (max_sym_count * sizeof (int *)); | |
3773 | aout_info.output_syms = bfd_malloc ((max_sym_count + 1) | |
3774 | * sizeof (struct external_nlist)); | |
3775 | if ((aout_info.contents == NULL && max_contents_size != 0) | |
3776 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
3777 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
3778 | || aout_info.output_syms == NULL) | |
3779 | goto error_return; | |
3780 | ||
3781 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
3782 | required by SunOS. Doing this here rather than in sunos.c is a | |
3783 | hack, but it's easier than exporting everything which would be | |
3784 | needed. */ | |
3785 | { | |
3786 | struct aout_link_hash_entry *h; | |
3787 | ||
3788 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
3789 | FALSE, FALSE, FALSE); | |
3790 | if (h != NULL) | |
3791 | aout_link_write_other_symbol (h, &aout_info); | |
3792 | } | |
3793 | ||
3794 | /* The most time efficient way to do the link would be to read all | |
3795 | the input object files into memory and then sort out the | |
3796 | information into the output file. Unfortunately, that will | |
3797 | probably use too much memory. Another method would be to step | |
3798 | through everything that composes the text section and write it | |
3799 | out, and then everything that composes the data section and write | |
3800 | it out, and then write out the relocs, and then write out the | |
3801 | symbols. Unfortunately, that requires reading stuff from each | |
3802 | input file several times, and we will not be able to keep all the | |
3803 | input files open simultaneously, and reopening them will be slow. | |
3804 | ||
3805 | What we do is basically process one input file at a time. We do | |
3806 | everything we need to do with an input file once--copy over the | |
3807 | section contents, handle the relocation information, and write | |
3808 | out the symbols--and then we throw away the information we read | |
3809 | from it. This approach requires a lot of lseeks of the output | |
3810 | file, which is unfortunate but still faster than reopening a lot | |
3811 | of files. | |
3812 | ||
3813 | We use the output_has_begun field of the input BFDs to see | |
3814 | whether we have already handled it. */ | |
3815 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
3816 | sub->output_has_begun = FALSE; | |
3817 | ||
3818 | /* Mark all sections which are to be included in the link. This | |
3819 | will normally be every section. We need to do this so that we | |
3820 | can identify any sections which the linker has decided to not | |
3821 | include. */ | |
3822 | for (o = abfd->sections; o != NULL; o = o->next) | |
e135f41b | 3823 | { |
8423293d | 3824 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
116c20d2 NC |
3825 | if (p->type == bfd_indirect_link_order) |
3826 | p->u.indirect.section->linker_mark = TRUE; | |
e135f41b NC |
3827 | } |
3828 | ||
116c20d2 NC |
3829 | have_link_order_relocs = FALSE; |
3830 | for (o = abfd->sections; o != NULL; o = o->next) | |
3831 | { | |
8423293d | 3832 | for (p = o->map_head.link_order; |
116c20d2 NC |
3833 | p != NULL; |
3834 | p = p->next) | |
3835 | { | |
3836 | if (p->type == bfd_indirect_link_order | |
3837 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
3838 | == bfd_target_aout_flavour)) | |
3839 | { | |
3840 | bfd *input_bfd; | |
e135f41b | 3841 | |
116c20d2 NC |
3842 | input_bfd = p->u.indirect.section->owner; |
3843 | if (! input_bfd->output_has_begun) | |
3844 | { | |
3845 | if (! aout_link_input_bfd (&aout_info, input_bfd)) | |
3846 | goto error_return; | |
3847 | input_bfd->output_has_begun = TRUE; | |
3848 | } | |
3849 | } | |
3850 | else if (p->type == bfd_section_reloc_link_order | |
3851 | || p->type == bfd_symbol_reloc_link_order) | |
3852 | /* These are handled below. */ | |
3853 | have_link_order_relocs = TRUE; | |
3854 | else | |
3855 | { | |
3856 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
3857 | goto error_return; | |
3858 | } | |
3859 | } | |
3860 | } | |
e135f41b | 3861 | |
116c20d2 NC |
3862 | /* Write out any symbols that we have not already written out. */ |
3863 | aout_link_hash_traverse (aout_hash_table (info), | |
3864 | aout_link_write_other_symbol, | |
3865 | (void *) &aout_info); | |
e135f41b | 3866 | |
116c20d2 NC |
3867 | /* Now handle any relocs we were asked to create by the linker. |
3868 | These did not come from any input file. We must do these after | |
3869 | we have written out all the symbols, so that we know the symbol | |
3870 | indices to use. */ | |
3871 | if (have_link_order_relocs) | |
e135f41b | 3872 | { |
116c20d2 | 3873 | for (o = abfd->sections; o != NULL; o = o->next) |
e135f41b | 3874 | { |
8423293d | 3875 | for (p = o->map_head.link_order; |
116c20d2 NC |
3876 | p != NULL; |
3877 | p = p->next) | |
3878 | { | |
3879 | if (p->type == bfd_section_reloc_link_order | |
3880 | || p->type == bfd_symbol_reloc_link_order) | |
3881 | { | |
3882 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
3883 | goto error_return; | |
3884 | } | |
3885 | } | |
e135f41b NC |
3886 | } |
3887 | } | |
3888 | ||
116c20d2 NC |
3889 | if (aout_info.contents != NULL) |
3890 | { | |
3891 | free (aout_info.contents); | |
3892 | aout_info.contents = NULL; | |
3893 | } | |
3894 | if (aout_info.relocs != NULL) | |
3895 | { | |
3896 | free (aout_info.relocs); | |
3897 | aout_info.relocs = NULL; | |
3898 | } | |
3899 | if (aout_info.symbol_map != NULL) | |
3900 | { | |
3901 | free (aout_info.symbol_map); | |
3902 | aout_info.symbol_map = NULL; | |
3903 | } | |
3904 | if (aout_info.output_syms != NULL) | |
3905 | { | |
3906 | free (aout_info.output_syms); | |
3907 | aout_info.output_syms = NULL; | |
3908 | } | |
3909 | if (includes_hash_initialized) | |
3910 | { | |
3911 | bfd_hash_table_free (&aout_info.includes.root); | |
3912 | includes_hash_initialized = FALSE; | |
3913 | } | |
e135f41b | 3914 | |
116c20d2 NC |
3915 | /* Finish up any dynamic linking we may be doing. */ |
3916 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
3917 | { | |
3918 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
3919 | goto error_return; | |
3920 | } | |
e135f41b | 3921 | |
116c20d2 NC |
3922 | /* Update the header information. */ |
3923 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
3924 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
3925 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
3926 | obj_textsec (abfd)->reloc_count = | |
3927 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
3928 | obj_datasec (abfd)->reloc_count = | |
3929 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
3930 | ||
3931 | /* Write out the string table, unless there are no symbols. */ | |
3932 | if (abfd->symcount > 0) | |
e135f41b | 3933 | { |
116c20d2 NC |
3934 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 |
3935 | || ! emit_stringtab (abfd, aout_info.strtab)) | |
3936 | goto error_return; | |
3937 | } | |
3938 | else if (obj_textsec (abfd)->reloc_count == 0 | |
3939 | && obj_datasec (abfd)->reloc_count == 0) | |
3940 | { | |
3941 | bfd_byte b; | |
e135f41b | 3942 | |
116c20d2 NC |
3943 | b = 0; |
3944 | if (bfd_seek (abfd, | |
3945 | (file_ptr) (obj_datasec (abfd)->filepos | |
3946 | + exec_hdr (abfd)->a_data | |
3947 | - 1), | |
3948 | SEEK_SET) != 0 | |
3949 | || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1) | |
3950 | goto error_return; | |
e135f41b NC |
3951 | } |
3952 | ||
b34976b6 | 3953 | return TRUE; |
e135f41b | 3954 | |
116c20d2 NC |
3955 | error_return: |
3956 | if (aout_info.contents != NULL) | |
3957 | free (aout_info.contents); | |
3958 | if (aout_info.relocs != NULL) | |
3959 | free (aout_info.relocs); | |
3960 | if (aout_info.symbol_map != NULL) | |
3961 | free (aout_info.symbol_map); | |
3962 | if (aout_info.output_syms != NULL) | |
3963 | free (aout_info.output_syms); | |
3964 | if (includes_hash_initialized) | |
3965 | bfd_hash_table_free (&aout_info.includes.root); | |
3966 | return FALSE; | |
e135f41b NC |
3967 | } |
3968 | ||
116c20d2 NC |
3969 | /* Adjust and write out the symbols for an a.out file. Set the new |
3970 | symbol indices into a symbol_map. */ | |
3971 | ||
b34976b6 | 3972 | static bfd_boolean |
116c20d2 | 3973 | aout_link_write_symbols (struct aout_final_link_info *finfo, bfd *input_bfd) |
e135f41b | 3974 | { |
e135f41b | 3975 | bfd *output_bfd; |
116c20d2 | 3976 | bfd_size_type sym_count; |
e135f41b | 3977 | char *strings; |
116c20d2 NC |
3978 | enum bfd_link_strip strip; |
3979 | enum bfd_link_discard discard; | |
3980 | struct external_nlist *outsym; | |
3981 | bfd_size_type strtab_index; | |
3982 | struct external_nlist *sym; | |
3983 | struct external_nlist *sym_end; | |
3984 | struct aout_link_hash_entry **sym_hash; | |
e135f41b | 3985 | int *symbol_map; |
116c20d2 NC |
3986 | bfd_boolean pass; |
3987 | bfd_boolean skip_next; | |
e135f41b NC |
3988 | |
3989 | output_bfd = finfo->output_bfd; | |
116c20d2 | 3990 | sym_count = obj_aout_external_sym_count (input_bfd); |
e135f41b | 3991 | strings = obj_aout_external_strings (input_bfd); |
116c20d2 NC |
3992 | strip = finfo->info->strip; |
3993 | discard = finfo->info->discard; | |
3994 | outsym = finfo->output_syms; | |
e135f41b | 3995 | |
116c20d2 NC |
3996 | /* First write out a symbol for this object file, unless we are |
3997 | discarding such symbols. */ | |
3998 | if (strip != strip_all | |
3999 | && (strip != strip_some | |
4000 | || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename, | |
4001 | FALSE, FALSE) != NULL) | |
4002 | && discard != discard_all) | |
4003 | { | |
4004 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); | |
4005 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, | |
4006 | input_bfd->filename, FALSE); | |
4007 | if (strtab_index == (bfd_size_type) -1) | |
4008 | return FALSE; | |
4009 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4010 | PUT_WORD (output_bfd, | |
4011 | (bfd_get_section_vma (output_bfd, | |
4012 | obj_textsec (input_bfd)->output_section) | |
4013 | + obj_textsec (input_bfd)->output_offset), | |
4014 | outsym->e_value); | |
4015 | ++obj_aout_external_sym_count (output_bfd); | |
4016 | ++outsym; | |
4017 | } | |
4018 | ||
4019 | pass = FALSE; | |
4020 | skip_next = FALSE; | |
4021 | sym = obj_aout_external_syms (input_bfd); | |
4022 | sym_end = sym + sym_count; | |
4023 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
4024 | symbol_map = finfo->symbol_map; | |
4025 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); | |
4026 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) | |
e135f41b | 4027 | { |
116c20d2 NC |
4028 | const char *name; |
4029 | int type; | |
4030 | struct aout_link_hash_entry *h; | |
4031 | bfd_boolean skip; | |
4032 | asection *symsec; | |
4033 | bfd_vma val = 0; | |
4034 | bfd_boolean copy; | |
e135f41b | 4035 | |
116c20d2 NC |
4036 | /* We set *symbol_map to 0 above for all symbols. If it has |
4037 | already been set to -1 for this symbol, it means that we are | |
4038 | discarding it because it appears in a duplicate header file. | |
4039 | See the N_BINCL code below. */ | |
4040 | if (*symbol_map == -1) | |
e135f41b NC |
4041 | continue; |
4042 | ||
116c20d2 NC |
4043 | /* Initialize *symbol_map to -1, which means that the symbol was |
4044 | not copied into the output file. We will change it later if | |
4045 | we do copy the symbol over. */ | |
4046 | *symbol_map = -1; | |
e135f41b | 4047 | |
116c20d2 NC |
4048 | type = H_GET_8 (input_bfd, sym->e_type); |
4049 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
e135f41b | 4050 | |
116c20d2 | 4051 | h = NULL; |
e135f41b | 4052 | |
116c20d2 | 4053 | if (pass) |
e135f41b | 4054 | { |
116c20d2 NC |
4055 | /* Pass this symbol through. It is the target of an |
4056 | indirect or warning symbol. */ | |
4057 | val = GET_WORD (input_bfd, sym->e_value); | |
4058 | pass = FALSE; | |
4059 | } | |
4060 | else if (skip_next) | |
4061 | { | |
4062 | /* Skip this symbol, which is the target of an indirect | |
4063 | symbol that we have changed to no longer be an indirect | |
4064 | symbol. */ | |
4065 | skip_next = FALSE; | |
4066 | continue; | |
4067 | } | |
4068 | else | |
4069 | { | |
4070 | struct aout_link_hash_entry *hresolve; | |
e135f41b | 4071 | |
116c20d2 NC |
4072 | /* We have saved the hash table entry for this symbol, if |
4073 | there is one. Note that we could just look it up again | |
4074 | in the hash table, provided we first check that it is an | |
4075 | external symbol. */ | |
4076 | h = *sym_hash; | |
e135f41b | 4077 | |
116c20d2 NC |
4078 | /* Use the name from the hash table, in case the symbol was |
4079 | wrapped. */ | |
4080 | if (h != NULL) | |
4081 | name = h->root.root.string; | |
e135f41b | 4082 | |
116c20d2 NC |
4083 | /* If this is an indirect or warning symbol, then change |
4084 | hresolve to the base symbol. We also change *sym_hash so | |
4085 | that the relocation routines relocate against the real | |
4086 | symbol. */ | |
4087 | hresolve = h; | |
4088 | if (h != NULL | |
4089 | && (h->root.type == bfd_link_hash_indirect | |
4090 | || h->root.type == bfd_link_hash_warning)) | |
4091 | { | |
4092 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; | |
4093 | while (hresolve->root.type == bfd_link_hash_indirect | |
4094 | || hresolve->root.type == bfd_link_hash_warning) | |
4095 | hresolve = ((struct aout_link_hash_entry *) | |
4096 | hresolve->root.u.i.link); | |
4097 | *sym_hash = hresolve; | |
4098 | } | |
e135f41b | 4099 | |
116c20d2 NC |
4100 | /* If the symbol has already been written out, skip it. */ |
4101 | if (h != NULL | |
4102 | && h->root.type != bfd_link_hash_warning | |
4103 | && h->written) | |
4104 | { | |
4105 | if ((type & N_TYPE) == N_INDR | |
4106 | || type == N_WARNING) | |
4107 | skip_next = TRUE; | |
4108 | *symbol_map = h->indx; | |
4109 | continue; | |
4110 | } | |
e135f41b | 4111 | |
116c20d2 NC |
4112 | /* See if we are stripping this symbol. */ |
4113 | skip = FALSE; | |
4114 | switch (strip) | |
4115 | { | |
4116 | case strip_none: | |
4117 | break; | |
4118 | case strip_debugger: | |
4119 | if ((type & N_STAB) != 0) | |
4120 | skip = TRUE; | |
4121 | break; | |
4122 | case strip_some: | |
4123 | if (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE, FALSE) | |
4124 | == NULL) | |
4125 | skip = TRUE; | |
4126 | break; | |
4127 | case strip_all: | |
4128 | skip = TRUE; | |
4129 | break; | |
e135f41b | 4130 | } |
116c20d2 | 4131 | if (skip) |
e135f41b | 4132 | { |
116c20d2 NC |
4133 | if (h != NULL) |
4134 | h->written = TRUE; | |
4135 | continue; | |
4136 | } | |
e135f41b | 4137 | |
116c20d2 NC |
4138 | /* Get the value of the symbol. */ |
4139 | if ((type & N_TYPE) == N_TEXT | |
4140 | || type == N_WEAKT) | |
4141 | symsec = obj_textsec (input_bfd); | |
4142 | else if ((type & N_TYPE) == N_DATA | |
4143 | || type == N_WEAKD) | |
4144 | symsec = obj_datasec (input_bfd); | |
4145 | else if ((type & N_TYPE) == N_BSS | |
4146 | || type == N_WEAKB) | |
4147 | symsec = obj_bsssec (input_bfd); | |
4148 | else if ((type & N_TYPE) == N_ABS | |
4149 | || type == N_WEAKA) | |
4150 | symsec = bfd_abs_section_ptr; | |
4151 | else if (((type & N_TYPE) == N_INDR | |
4152 | && (hresolve == NULL | |
4153 | || (hresolve->root.type != bfd_link_hash_defined | |
4154 | && hresolve->root.type != bfd_link_hash_defweak | |
4155 | && hresolve->root.type != bfd_link_hash_common))) | |
4156 | || type == N_WARNING) | |
4157 | { | |
4158 | /* Pass the next symbol through unchanged. The | |
4159 | condition above for indirect symbols is so that if | |
4160 | the indirect symbol was defined, we output it with | |
4161 | the correct definition so the debugger will | |
4162 | understand it. */ | |
4163 | pass = TRUE; | |
4164 | val = GET_WORD (input_bfd, sym->e_value); | |
4165 | symsec = NULL; | |
4166 | } | |
4167 | else if ((type & N_STAB) != 0) | |
4168 | { | |
4169 | val = GET_WORD (input_bfd, sym->e_value); | |
4170 | symsec = NULL; | |
e135f41b | 4171 | } |
116c20d2 NC |
4172 | else |
4173 | { | |
4174 | /* If we get here with an indirect symbol, it means that | |
4175 | we are outputting it with a real definition. In such | |
4176 | a case we do not want to output the next symbol, | |
4177 | which is the target of the indirection. */ | |
4178 | if ((type & N_TYPE) == N_INDR) | |
4179 | skip_next = TRUE; | |
e135f41b | 4180 | |
116c20d2 | 4181 | symsec = NULL; |
e135f41b | 4182 | |
116c20d2 NC |
4183 | /* We need to get the value from the hash table. We use |
4184 | hresolve so that if we have defined an indirect | |
4185 | symbol we output the final definition. */ | |
4186 | if (h == NULL) | |
4187 | { | |
4188 | switch (type & N_TYPE) | |
4189 | { | |
4190 | case N_SETT: | |
4191 | symsec = obj_textsec (input_bfd); | |
4192 | break; | |
4193 | case N_SETD: | |
4194 | symsec = obj_datasec (input_bfd); | |
4195 | break; | |
4196 | case N_SETB: | |
4197 | symsec = obj_bsssec (input_bfd); | |
4198 | break; | |
4199 | case N_SETA: | |
4200 | symsec = bfd_abs_section_ptr; | |
4201 | break; | |
4202 | default: | |
4203 | val = 0; | |
4204 | break; | |
4205 | } | |
4206 | } | |
4207 | else if (hresolve->root.type == bfd_link_hash_defined | |
4208 | || hresolve->root.type == bfd_link_hash_defweak) | |
4209 | { | |
4210 | asection *input_section; | |
4211 | asection *output_section; | |
e135f41b | 4212 | |
116c20d2 NC |
4213 | /* This case usually means a common symbol which was |
4214 | turned into a defined symbol. */ | |
4215 | input_section = hresolve->root.u.def.section; | |
4216 | output_section = input_section->output_section; | |
4217 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
4218 | || output_section->owner == output_bfd); | |
4219 | val = (hresolve->root.u.def.value | |
4220 | + bfd_get_section_vma (output_bfd, output_section) | |
4221 | + input_section->output_offset); | |
e135f41b | 4222 | |
116c20d2 NC |
4223 | /* Get the correct type based on the section. If |
4224 | this is a constructed set, force it to be | |
4225 | globally visible. */ | |
4226 | if (type == N_SETT | |
4227 | || type == N_SETD | |
4228 | || type == N_SETB | |
4229 | || type == N_SETA) | |
4230 | type |= N_EXT; | |
e135f41b | 4231 | |
116c20d2 | 4232 | type &=~ N_TYPE; |
e135f41b | 4233 | |
116c20d2 NC |
4234 | if (output_section == obj_textsec (output_bfd)) |
4235 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4236 | ? N_TEXT | |
4237 | : N_WEAKT); | |
4238 | else if (output_section == obj_datasec (output_bfd)) | |
4239 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4240 | ? N_DATA | |
4241 | : N_WEAKD); | |
4242 | else if (output_section == obj_bsssec (output_bfd)) | |
4243 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4244 | ? N_BSS | |
4245 | : N_WEAKB); | |
4246 | else | |
4247 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4248 | ? N_ABS | |
4249 | : N_WEAKA); | |
e135f41b | 4250 | } |
116c20d2 NC |
4251 | else if (hresolve->root.type == bfd_link_hash_common) |
4252 | val = hresolve->root.u.c.size; | |
4253 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
e135f41b | 4254 | { |
116c20d2 NC |
4255 | val = 0; |
4256 | type = N_WEAKU; | |
e135f41b | 4257 | } |
116c20d2 NC |
4258 | else |
4259 | val = 0; | |
e135f41b | 4260 | } |
116c20d2 NC |
4261 | if (symsec != NULL) |
4262 | val = (symsec->output_section->vma | |
4263 | + symsec->output_offset | |
4264 | + (GET_WORD (input_bfd, sym->e_value) | |
4265 | - symsec->vma)); | |
e135f41b | 4266 | |
116c20d2 NC |
4267 | /* If this is a global symbol set the written flag, and if |
4268 | it is a local symbol see if we should discard it. */ | |
4269 | if (h != NULL) | |
e135f41b | 4270 | { |
116c20d2 NC |
4271 | h->written = TRUE; |
4272 | h->indx = obj_aout_external_sym_count (output_bfd); | |
e135f41b | 4273 | } |
116c20d2 NC |
4274 | else if ((type & N_TYPE) != N_SETT |
4275 | && (type & N_TYPE) != N_SETD | |
4276 | && (type & N_TYPE) != N_SETB | |
4277 | && (type & N_TYPE) != N_SETA) | |
e135f41b | 4278 | { |
116c20d2 NC |
4279 | switch (discard) |
4280 | { | |
4281 | case discard_none: | |
4282 | case discard_sec_merge: | |
4283 | break; | |
4284 | case discard_l: | |
4285 | if ((type & N_STAB) == 0 | |
4286 | && bfd_is_local_label_name (input_bfd, name)) | |
4287 | skip = TRUE; | |
4288 | break; | |
4289 | case discard_all: | |
4290 | skip = TRUE; | |
4291 | break; | |
4292 | } | |
4293 | if (skip) | |
4294 | { | |
4295 | pass = FALSE; | |
4296 | continue; | |
4297 | } | |
e135f41b NC |
4298 | } |
4299 | ||
116c20d2 NC |
4300 | /* An N_BINCL symbol indicates the start of the stabs |
4301 | entries for a header file. We need to scan ahead to the | |
4302 | next N_EINCL symbol, ignoring nesting, adding up all the | |
4303 | characters in the symbol names, not including the file | |
4304 | numbers in types (the first number after an open | |
4305 | parenthesis). */ | |
4306 | if (type == N_BINCL) | |
e135f41b | 4307 | { |
116c20d2 NC |
4308 | struct external_nlist *incl_sym; |
4309 | int nest; | |
4310 | struct aout_link_includes_entry *incl_entry; | |
4311 | struct aout_link_includes_totals *t; | |
e135f41b | 4312 | |
116c20d2 NC |
4313 | val = 0; |
4314 | nest = 0; | |
4315 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
4316 | { | |
4317 | int incl_type; | |
e135f41b | 4318 | |
116c20d2 NC |
4319 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
4320 | if (incl_type == N_EINCL) | |
4321 | { | |
4322 | if (nest == 0) | |
4323 | break; | |
4324 | --nest; | |
4325 | } | |
4326 | else if (incl_type == N_BINCL) | |
4327 | ++nest; | |
4328 | else if (nest == 0) | |
4329 | { | |
4330 | const char *s; | |
e135f41b | 4331 | |
116c20d2 NC |
4332 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); |
4333 | for (; *s != '\0'; s++) | |
4334 | { | |
4335 | val += *s; | |
4336 | if (*s == '(') | |
4337 | { | |
4338 | /* Skip the file number. */ | |
4339 | ++s; | |
4340 | while (ISDIGIT (*s)) | |
4341 | ++s; | |
4342 | --s; | |
4343 | } | |
4344 | } | |
4345 | } | |
4346 | } | |
e135f41b | 4347 | |
116c20d2 NC |
4348 | /* If we have already included a header file with the |
4349 | same value, then replace this one with an N_EXCL | |
4350 | symbol. */ | |
4351 | copy = ! finfo->info->keep_memory; | |
4352 | incl_entry = aout_link_includes_lookup (&finfo->includes, | |
4353 | name, TRUE, copy); | |
4354 | if (incl_entry == NULL) | |
4355 | return FALSE; | |
4356 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
4357 | if (t->total == val) | |
4358 | break; | |
4359 | if (t == NULL) | |
4360 | { | |
4361 | /* This is the first time we have seen this header | |
4362 | file with this set of stabs strings. */ | |
4363 | t = bfd_hash_allocate (&finfo->includes.root, | |
4364 | sizeof *t); | |
4365 | if (t == NULL) | |
4366 | return FALSE; | |
4367 | t->total = val; | |
4368 | t->next = incl_entry->totals; | |
4369 | incl_entry->totals = t; | |
4370 | } | |
4371 | else | |
4372 | { | |
4373 | int *incl_map; | |
e135f41b | 4374 | |
116c20d2 NC |
4375 | /* This is a duplicate header file. We must change |
4376 | it to be an N_EXCL entry, and mark all the | |
4377 | included symbols to prevent outputting them. */ | |
4378 | type = N_EXCL; | |
e135f41b | 4379 | |
116c20d2 NC |
4380 | nest = 0; |
4381 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
4382 | incl_sym < sym_end; | |
4383 | incl_sym++, incl_map++) | |
4384 | { | |
4385 | int incl_type; | |
e135f41b | 4386 | |
116c20d2 NC |
4387 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
4388 | if (incl_type == N_EINCL) | |
4389 | { | |
4390 | if (nest == 0) | |
4391 | { | |
4392 | *incl_map = -1; | |
4393 | break; | |
4394 | } | |
4395 | --nest; | |
4396 | } | |
4397 | else if (incl_type == N_BINCL) | |
4398 | ++nest; | |
4399 | else if (nest == 0) | |
4400 | *incl_map = -1; | |
4401 | } | |
4402 | } | |
4403 | } | |
e135f41b | 4404 | } |
e135f41b | 4405 | |
116c20d2 NC |
4406 | /* Copy this symbol into the list of symbols we are going to |
4407 | write out. */ | |
4408 | H_PUT_8 (output_bfd, type, outsym->e_type); | |
4409 | copy = FALSE; | |
4410 | if (! finfo->info->keep_memory) | |
e135f41b | 4411 | { |
116c20d2 NC |
4412 | /* name points into a string table which we are going to |
4413 | free. If there is a hash table entry, use that string. | |
4414 | Otherwise, copy name into memory. */ | |
4415 | if (h != NULL) | |
4416 | name = h->root.root.string; | |
4417 | else | |
4418 | copy = TRUE; | |
e135f41b | 4419 | } |
116c20d2 NC |
4420 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
4421 | name, copy); | |
4422 | if (strtab_index == (bfd_size_type) -1) | |
4423 | return FALSE; | |
4424 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4425 | PUT_WORD (output_bfd, val, outsym->e_value); | |
4426 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
4427 | ++obj_aout_external_sym_count (output_bfd); | |
4428 | ++outsym; | |
e135f41b NC |
4429 | } |
4430 | ||
116c20d2 NC |
4431 | /* Write out the output symbols we have just constructed. */ |
4432 | if (outsym > finfo->output_syms) | |
e135f41b NC |
4433 | { |
4434 | bfd_size_type size; | |
e135f41b | 4435 | |
116c20d2 | 4436 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0) |
b34976b6 | 4437 | return FALSE; |
116c20d2 NC |
4438 | size = outsym - finfo->output_syms; |
4439 | size *= EXTERNAL_NLIST_SIZE; | |
4440 | if (bfd_bwrite ((void *) finfo->output_syms, size, output_bfd) != size) | |
b34976b6 | 4441 | return FALSE; |
116c20d2 | 4442 | finfo->symoff += size; |
e135f41b NC |
4443 | } |
4444 | ||
b34976b6 | 4445 | return TRUE; |
e135f41b | 4446 | } |
116c20d2 NC |
4447 | |
4448 | /* Write out a symbol that was not associated with an a.out input | |
4449 | object. */ | |
e135f41b | 4450 | |
edeb6e24 AM |
4451 | static bfd_vma |
4452 | bfd_getp32 (const void *p) | |
e135f41b | 4453 | { |
edeb6e24 AM |
4454 | const bfd_byte *addr = p; |
4455 | unsigned long v; | |
116c20d2 | 4456 | |
edeb6e24 AM |
4457 | v = (unsigned long) addr[1] << 24; |
4458 | v |= (unsigned long) addr[0] << 16; | |
4459 | v |= (unsigned long) addr[3] << 8; | |
4460 | v |= (unsigned long) addr[2]; | |
4461 | return v; | |
e135f41b NC |
4462 | } |
4463 | ||
4464 | #define COERCE32(x) (((bfd_signed_vma) (x) ^ 0x80000000) - 0x80000000) | |
4465 | ||
edeb6e24 AM |
4466 | static bfd_signed_vma |
4467 | bfd_getp_signed_32 (const void *p) | |
e135f41b | 4468 | { |
edeb6e24 AM |
4469 | const bfd_byte *addr = p; |
4470 | unsigned long v; | |
116c20d2 | 4471 | |
edeb6e24 AM |
4472 | v = (unsigned long) addr[1] << 24; |
4473 | v |= (unsigned long) addr[0] << 16; | |
4474 | v |= (unsigned long) addr[3] << 8; | |
4475 | v |= (unsigned long) addr[2]; | |
4476 | return COERCE32 (v); | |
e135f41b NC |
4477 | } |
4478 | ||
edeb6e24 AM |
4479 | static void |
4480 | bfd_putp32 (bfd_vma data, void *p) | |
e135f41b | 4481 | { |
edeb6e24 | 4482 | bfd_byte *addr = p; |
116c20d2 | 4483 | |
edeb6e24 AM |
4484 | addr[0] = (data >> 16) & 0xff; |
4485 | addr[1] = (data >> 24) & 0xff; | |
4486 | addr[2] = (data >> 0) & 0xff; | |
4487 | addr[3] = (data >> 8) & 0xff; | |
e135f41b | 4488 | } |
116c20d2 NC |
4489 | |
4490 | const bfd_target MY (vec) = | |
4491 | { | |
4492 | TARGETNAME, /* Name. */ | |
4493 | bfd_target_aout_flavour, | |
4494 | BFD_ENDIAN_LITTLE, /* Target byte order (little). */ | |
4495 | BFD_ENDIAN_LITTLE, /* Target headers byte order (little). */ | |
4496 | (HAS_RELOC | EXEC_P | /* Object flags. */ | |
4497 | HAS_LINENO | HAS_DEBUG | | |
4498 | HAS_SYMS | HAS_LOCALS | WP_TEXT), | |
4499 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA), | |
4500 | MY_symbol_leading_char, | |
4501 | AR_PAD_CHAR, /* AR_pad_char. */ | |
4502 | 15, /* AR_max_namelen. */ | |
4503 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
4504 | bfd_getp32, bfd_getp_signed_32, bfd_putp32, | |
4505 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */ | |
4506 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
4507 | bfd_getp32, bfd_getp_signed_32, bfd_putp32, | |
4508 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Headers. */ | |
4509 | {_bfd_dummy_target, MY_object_p, /* bfd_check_format. */ | |
4510 | bfd_generic_archive_p, MY_core_file_p}, | |
4511 | {bfd_false, MY_mkobject, /* bfd_set_format. */ | |
4512 | _bfd_generic_mkarchive, bfd_false}, | |
4513 | {bfd_false, MY_write_object_contents, /* bfd_write_contents. */ | |
4514 | _bfd_write_archive_contents, bfd_false}, | |
4515 | ||
4516 | BFD_JUMP_TABLE_GENERIC (MY), | |
4517 | BFD_JUMP_TABLE_COPY (MY), | |
4518 | BFD_JUMP_TABLE_CORE (MY), | |
4519 | BFD_JUMP_TABLE_ARCHIVE (MY), | |
4520 | BFD_JUMP_TABLE_SYMBOLS (MY), | |
4521 | BFD_JUMP_TABLE_RELOCS (MY), | |
4522 | BFD_JUMP_TABLE_WRITE (MY), | |
4523 | BFD_JUMP_TABLE_LINK (MY), | |
4524 | BFD_JUMP_TABLE_DYNAMIC (MY), | |
4525 | ||
4526 | /* Alternative_target. */ | |
4527 | NULL, | |
4528 | ||
4529 | (void *) MY_backend_data | |
4530 | }; |