Commit | Line | Data |
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e135f41b | 1 | /* BFD back-end for PDP-11 a.out binaries. |
a77e83b7 | 2 | Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009 |
66eb6687 | 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 | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
42ef282f | 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 | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
21 | ||
e135f41b NC |
22 | |
23 | /* BFD backend for PDP-11, running 2.11BSD in particular. | |
24 | ||
25 | This file was hacked up by looking hard at the existing vaxnetbsd | |
26 | back end and the header files in 2.11BSD. | |
27 | ||
28 | TODO | |
29 | * support for V7 file formats | |
30 | * support for overlay object files (see 2.11 a.out(5)) | |
31 | * support for old and very old archives | |
32 | (see 2.11 ar(5), historical section) | |
dc810e39 | 33 | |
e135f41b NC |
34 | Search for TODO to find other areas needing more work. */ |
35 | ||
36 | #define BYTES_IN_WORD 2 | |
37 | #define BYTES_IN_LONG 4 | |
38 | #define ARCH_SIZE 16 | |
39 | #undef TARGET_IS_BIG_ENDIAN_P | |
40 | ||
41 | #define TARGET_PAGE_SIZE 1024 | |
42 | #define SEGMENT__SIZE TARGET_PAGE_SIZE | |
43 | ||
44 | #define DEFAULT_ARCH bfd_arch_pdp11 | |
45 | #define DEFAULT_MID M_PDP11 | |
46 | ||
e43d48cc AM |
47 | /* Do not "beautify" the CONCAT* macro args. Traditional C will not |
48 | remove whitespace added here, and thus will fail to concatenate | |
49 | the tokens. */ | |
50 | #define MY(OP) CONCAT2 (pdp11_aout_,OP) | |
51 | ||
e135f41b NC |
52 | /* This needs to start with a.out so GDB knows it is an a.out variant. */ |
53 | #define TARGETNAME "a.out-pdp11" | |
54 | ||
55 | /* This is the normal load address for executables. */ | |
56 | #define TEXT_START_ADDR 0 | |
57 | ||
58 | /* The header is not included in the text segment. */ | |
59 | #define N_HEADER_IN_TEXT(x) 0 | |
60 | ||
61 | /* There are no shared libraries. */ | |
62 | #define N_SHARED_LIB(x) 0 | |
63 | ||
64 | /* There is no flags field. */ | |
65 | #define N_FLAGS(exec) 0 | |
66 | ||
67 | #define N_SET_FLAGS(exec, flags) do { } while (0) | |
a77e83b7 AM |
68 | #define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ |
69 | && N_MAGIC(x) != NMAGIC \ | |
70 | && N_MAGIC(x) != ZMAGIC) | |
e135f41b | 71 | |
3db64b00 | 72 | #include "sysdep.h" |
e135f41b NC |
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 | ||
e135f41b NC |
126 | #include "libbfd.h" |
127 | #include "libaout.h" | |
128 | ||
129 | #define SWAP_MAGIC(ext) bfd_getl16 (ext) | |
130 | ||
131 | #define MY_entry_is_text_address 1 | |
132 | ||
133 | #define MY_write_object_contents MY(write_object_contents) | |
116c20d2 | 134 | static bfd_boolean MY(write_object_contents) (bfd *); |
e135f41b NC |
135 | #define MY_text_includes_header 1 |
136 | ||
e135f41b NC |
137 | #define MY_BFD_TARGET |
138 | ||
139 | #include "aout-target.h" | |
140 | ||
116c20d2 | 141 | /* Start of modified aoutx.h. */ |
e135f41b NC |
142 | #define KEEPIT udata.i |
143 | ||
116c20d2 | 144 | #include <string.h> /* For strchr and friends. */ |
e135f41b NC |
145 | #include "bfd.h" |
146 | #include "sysdep.h" | |
3882b010 | 147 | #include "safe-ctype.h" |
e135f41b NC |
148 | #include "bfdlink.h" |
149 | ||
150 | #include "libaout.h" | |
e135f41b NC |
151 | #include "aout/aout64.h" |
152 | #include "aout/stab_gnu.h" | |
153 | #include "aout/ar.h" | |
154 | ||
155 | #undef N_TYPE | |
156 | #undef N_UNDF | |
157 | #undef N_ABS | |
158 | #undef N_TEXT | |
159 | #undef N_DATA | |
160 | #undef N_BSS | |
161 | #undef N_REG | |
162 | #undef N_FN | |
163 | #undef N_EXT | |
116c20d2 NC |
164 | #define N_TYPE 0x1f /* Type mask. */ |
165 | #define N_UNDF 0x00 /* Undefined. */ | |
166 | #define N_ABS 0x01 /* Absolute. */ | |
167 | #define N_TEXT 0x02 /* Text segment. */ | |
168 | #define N_DATA 0x03 /* Data segment. */ | |
169 | #define N_BSS 0x04 /* Bss segment. */ | |
170 | #define N_REG 0x14 /* Register symbol. */ | |
171 | #define N_FN 0x1f /* File name. */ | |
172 | #define N_EXT 0x20 /* External flag. */ | |
e135f41b NC |
173 | |
174 | #define RELOC_SIZE 2 | |
175 | ||
116c20d2 NC |
176 | #define RELFLG 0x0001 /* PC-relative flag. */ |
177 | #define RTYPE 0x000e /* Type mask. */ | |
178 | #define RIDXMASK 0xfff0 /* Index mask. */ | |
e135f41b | 179 | |
116c20d2 NC |
180 | #define RABS 0x00 /* Absolute. */ |
181 | #define RTEXT 0x02 /* Text. */ | |
182 | #define RDATA 0x04 /* Data. */ | |
183 | #define RBSS 0x06 /* Bss. */ | |
184 | #define REXT 0x08 /* External. */ | |
e135f41b NC |
185 | |
186 | #define RINDEX(x) (((x) & 0xfff0) >> 4) | |
187 | ||
e135f41b NC |
188 | #ifndef MY_final_link_relocate |
189 | #define MY_final_link_relocate _bfd_final_link_relocate | |
190 | #endif | |
191 | ||
192 | #ifndef MY_relocate_contents | |
193 | #define MY_relocate_contents _bfd_relocate_contents | |
194 | #endif | |
195 | ||
116c20d2 NC |
196 | /* A hash table used for header files with N_BINCL entries. */ |
197 | ||
198 | struct aout_link_includes_table | |
199 | { | |
200 | struct bfd_hash_table root; | |
201 | }; | |
202 | ||
203 | /* A linked list of totals that we have found for a particular header | |
204 | file. */ | |
205 | ||
206 | struct aout_link_includes_totals | |
207 | { | |
208 | struct aout_link_includes_totals *next; | |
209 | bfd_vma total; | |
210 | }; | |
211 | ||
212 | /* An entry in the header file hash table. */ | |
213 | ||
214 | struct aout_link_includes_entry | |
215 | { | |
216 | struct bfd_hash_entry root; | |
217 | /* List of totals we have found for this file. */ | |
218 | struct aout_link_includes_totals *totals; | |
219 | }; | |
220 | ||
221 | /* During the final link step we need to pass around a bunch of | |
222 | information, so we do it in an instance of this structure. */ | |
223 | ||
224 | struct aout_final_link_info | |
225 | { | |
226 | /* General link information. */ | |
227 | struct bfd_link_info *info; | |
228 | /* Output bfd. */ | |
229 | bfd *output_bfd; | |
230 | /* Reloc file positions. */ | |
231 | file_ptr treloff, dreloff; | |
232 | /* File position of symbols. */ | |
233 | file_ptr symoff; | |
234 | /* String table. */ | |
235 | struct bfd_strtab_hash *strtab; | |
236 | /* Header file hash table. */ | |
237 | struct aout_link_includes_table includes; | |
238 | /* A buffer large enough to hold the contents of any section. */ | |
239 | bfd_byte *contents; | |
240 | /* A buffer large enough to hold the relocs of any section. */ | |
241 | void * relocs; | |
242 | /* A buffer large enough to hold the symbol map of any input BFD. */ | |
243 | int *symbol_map; | |
244 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
245 | struct external_nlist *output_syms; | |
246 | }; | |
247 | ||
e135f41b NC |
248 | reloc_howto_type howto_table_pdp11[] = |
249 | { | |
250 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ | |
b34976b6 AM |
251 | HOWTO( 0, 0, 1, 16, FALSE, 0, complain_overflow_signed,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE), |
252 | HOWTO( 1, 0, 1, 16, TRUE, 0, complain_overflow_signed,0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE), | |
e135f41b NC |
253 | }; |
254 | ||
255 | #define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0])) | |
256 | ||
116c20d2 NC |
257 | |
258 | static bfd_boolean aout_link_check_archive_element (bfd *, struct bfd_link_info *, bfd_boolean *); | |
259 | static bfd_boolean aout_link_add_object_symbols (bfd *, struct bfd_link_info *); | |
260 | static bfd_boolean aout_link_add_symbols (bfd *, struct bfd_link_info *); | |
261 | static bfd_boolean aout_link_write_symbols (struct aout_final_link_info *, bfd *); | |
262 | ||
263 | ||
e135f41b | 264 | reloc_howto_type * |
116c20d2 NC |
265 | NAME (aout, reloc_type_lookup) (bfd * abfd ATTRIBUTE_UNUSED, |
266 | bfd_reloc_code_real_type code) | |
e135f41b NC |
267 | { |
268 | switch (code) | |
269 | { | |
270 | case BFD_RELOC_16: | |
271 | return &howto_table_pdp11[0]; | |
272 | case BFD_RELOC_16_PCREL: | |
273 | return &howto_table_pdp11[1]; | |
274 | default: | |
116c20d2 | 275 | return NULL; |
e135f41b NC |
276 | } |
277 | } | |
278 | ||
157090f7 AM |
279 | reloc_howto_type * |
280 | NAME (aout, reloc_name_lookup) (bfd *abfd ATTRIBUTE_UNUSED, | |
281 | const char *r_name) | |
282 | { | |
283 | unsigned int i; | |
284 | ||
285 | for (i = 0; | |
286 | i < sizeof (howto_table_pdp11) / sizeof (howto_table_pdp11[0]); | |
287 | i++) | |
288 | if (howto_table_pdp11[i].name != NULL | |
289 | && strcasecmp (howto_table_pdp11[i].name, r_name) == 0) | |
290 | return &howto_table_pdp11[i]; | |
291 | ||
292 | return NULL; | |
293 | } | |
294 | ||
e135f41b | 295 | static int |
116c20d2 | 296 | pdp11_aout_write_headers (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
297 | { |
298 | struct external_exec exec_bytes; | |
299 | bfd_size_type text_size; | |
300 | file_ptr text_end; | |
301 | ||
302 | if (adata(abfd).magic == undecided_magic) | |
116c20d2 | 303 | NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end); |
e135f41b NC |
304 | |
305 | execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; | |
306 | execp->a_entry = bfd_get_start_address (abfd); | |
307 | ||
116c20d2 NC |
308 | if (obj_textsec (abfd)->reloc_count > 0 |
309 | || obj_datasec (abfd)->reloc_count > 0) | |
e135f41b NC |
310 | { |
311 | execp->a_trsize = execp->a_text; | |
312 | execp->a_drsize = execp->a_data; | |
313 | } | |
314 | else | |
315 | { | |
316 | execp->a_trsize = 0; | |
317 | execp->a_drsize = 0; | |
318 | } | |
319 | ||
116c20d2 | 320 | NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); |
e135f41b NC |
321 | |
322 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) | |
b34976b6 | 323 | return FALSE; |
e135f41b | 324 | |
116c20d2 | 325 | if (bfd_bwrite ((void *) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, abfd) |
e135f41b | 326 | != EXEC_BYTES_SIZE) |
b34976b6 | 327 | return FALSE; |
e135f41b | 328 | |
116c20d2 NC |
329 | /* Now write out reloc info, followed by syms and strings. */ |
330 | if (bfd_get_outsymbols (abfd) != NULL | |
e135f41b NC |
331 | && bfd_get_symcount (abfd) != 0) |
332 | { | |
dc810e39 | 333 | if (bfd_seek (abfd, (file_ptr) (N_SYMOFF(*execp)), SEEK_SET) != 0) |
b34976b6 | 334 | return FALSE; |
e135f41b | 335 | |
116c20d2 | 336 | if (! NAME (aout, write_syms) (abfd)) |
b34976b6 | 337 | return FALSE; |
e135f41b NC |
338 | } |
339 | ||
116c20d2 NC |
340 | if (obj_textsec (abfd)->reloc_count > 0 |
341 | || obj_datasec (abfd)->reloc_count > 0) | |
e135f41b | 342 | { |
116c20d2 NC |
343 | if (bfd_seek (abfd, (file_ptr) (N_TRELOFF(*execp)), SEEK_SET) != 0 |
344 | || !NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd)) | |
345 | || bfd_seek (abfd, (file_ptr) (N_DRELOFF(*execp)), SEEK_SET) != 0 | |
346 | || !NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) | |
b34976b6 | 347 | return FALSE; |
e135f41b NC |
348 | } |
349 | ||
b34976b6 | 350 | return TRUE; |
dc810e39 | 351 | } |
e135f41b NC |
352 | |
353 | /* Write an object file. | |
354 | Section contents have already been written. We write the | |
355 | file header, symbols, and relocation. */ | |
356 | ||
b34976b6 | 357 | static bfd_boolean |
116c20d2 | 358 | MY(write_object_contents) (bfd *abfd) |
e135f41b NC |
359 | { |
360 | struct internal_exec *execp = exec_hdr (abfd); | |
361 | ||
362 | /* We must make certain that the magic number has been set. This | |
363 | will normally have been done by set_section_contents, but only if | |
364 | there actually are some section contents. */ | |
365 | if (! abfd->output_has_begun) | |
366 | { | |
367 | bfd_size_type text_size; | |
368 | file_ptr text_end; | |
369 | ||
116c20d2 | 370 | NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end); |
e135f41b NC |
371 | } |
372 | ||
373 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
374 | ||
116c20d2 | 375 | return WRITE_HEADERS (abfd, execp); |
e135f41b NC |
376 | } |
377 | ||
116c20d2 NC |
378 | /* Swap the information in an executable header @var{raw_bytes} taken |
379 | from a raw byte stream memory image into the internal exec header | |
380 | structure "execp". */ | |
e135f41b NC |
381 | |
382 | #ifndef NAME_swap_exec_header_in | |
383 | void | |
116c20d2 NC |
384 | NAME (aout, swap_exec_header_in) (bfd *abfd, |
385 | struct external_exec *bytes, | |
386 | struct internal_exec *execp) | |
e135f41b | 387 | { |
e135f41b NC |
388 | /* The internal_exec structure has some fields that are unused in this |
389 | configuration (IE for i960), so ensure that all such uninitialized | |
390 | fields are zero'd out. There are places where two of these structs | |
116c20d2 NC |
391 | are memcmp'd, and thus the contents do matter. */ |
392 | memset ((void *) execp, 0, sizeof (struct internal_exec)); | |
e135f41b NC |
393 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
394 | execp->a_info = GET_MAGIC (abfd, bytes->e_info); | |
395 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
396 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
397 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
398 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
399 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
400 | ||
401 | if (GET_WORD (abfd, bytes->e_flag) & A_FLAG_RELOC_STRIPPED) | |
402 | { | |
403 | execp->a_trsize = 0; | |
404 | execp->a_drsize = 0; | |
405 | } | |
406 | else | |
407 | { | |
408 | execp->a_trsize = execp->a_text; | |
409 | execp->a_drsize = execp->a_data; | |
410 | } | |
411 | } | |
116c20d2 | 412 | #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in) |
e135f41b NC |
413 | #endif |
414 | ||
116c20d2 NC |
415 | /* Swap the information in an internal exec header structure |
416 | "execp" into the buffer "bytes" ready for writing to disk. */ | |
e135f41b | 417 | void |
116c20d2 NC |
418 | NAME (aout, swap_exec_header_out) (bfd *abfd, |
419 | struct internal_exec *execp, | |
420 | struct external_exec *bytes) | |
e135f41b | 421 | { |
116c20d2 | 422 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ |
e135f41b NC |
423 | PUT_MAGIC (abfd, execp->a_info, bytes->e_info); |
424 | PUT_WORD (abfd, execp->a_text, bytes->e_text); | |
425 | PUT_WORD (abfd, execp->a_data, bytes->e_data); | |
426 | PUT_WORD (abfd, execp->a_bss, bytes->e_bss); | |
427 | PUT_WORD (abfd, execp->a_syms, bytes->e_syms); | |
428 | PUT_WORD (abfd, execp->a_entry, bytes->e_entry); | |
429 | PUT_WORD (abfd, 0, bytes->e_unused); | |
430 | ||
116c20d2 NC |
431 | if ((execp->a_trsize == 0 || execp->a_text == 0) |
432 | && (execp->a_drsize == 0 || execp->a_data == 0)) | |
433 | PUT_WORD (abfd, A_FLAG_RELOC_STRIPPED, bytes->e_flag); | |
434 | else if (execp->a_trsize == execp->a_text | |
435 | && execp->a_drsize == execp->a_data) | |
436 | PUT_WORD (abfd, 0, bytes->e_flag); | |
e135f41b NC |
437 | else |
438 | { | |
116c20d2 | 439 | /* TODO: print a proper warning message. */ |
e135f41b NC |
440 | fprintf (stderr, "BFD:%s:%d: internal error\n", __FILE__, __LINE__); |
441 | PUT_WORD (abfd, 0, bytes->e_flag); | |
442 | } | |
443 | } | |
444 | ||
445 | /* Make all the section for an a.out file. */ | |
446 | ||
b34976b6 | 447 | bfd_boolean |
116c20d2 | 448 | NAME (aout, make_sections) (bfd *abfd) |
e135f41b | 449 | { |
116c20d2 | 450 | if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL) |
b34976b6 | 451 | return FALSE; |
116c20d2 | 452 | if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL) |
b34976b6 | 453 | return FALSE; |
116c20d2 | 454 | if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL) |
b34976b6 AM |
455 | return FALSE; |
456 | return TRUE; | |
e135f41b NC |
457 | } |
458 | ||
116c20d2 NC |
459 | /* Some a.out variant thinks that the file open in ABFD |
460 | checking is an a.out file. Do some more checking, and set up | |
461 | for access if it really is. Call back to the calling | |
462 | environment's "finish up" function just before returning, to | |
463 | handle any last-minute setup. */ | |
e135f41b NC |
464 | |
465 | const bfd_target * | |
116c20d2 NC |
466 | NAME (aout, some_aout_object_p) (bfd *abfd, |
467 | struct internal_exec *execp, | |
468 | const bfd_target *(*callback_to_real_object_p) (bfd *)) | |
e135f41b NC |
469 | { |
470 | struct aout_data_struct *rawptr, *oldrawptr; | |
471 | const bfd_target *result; | |
dc810e39 | 472 | bfd_size_type amt = sizeof (struct aout_data_struct); |
e135f41b | 473 | |
116c20d2 | 474 | rawptr = bfd_zalloc (abfd, amt); |
e135f41b NC |
475 | if (rawptr == NULL) |
476 | return 0; | |
477 | ||
478 | oldrawptr = abfd->tdata.aout_data; | |
479 | abfd->tdata.aout_data = rawptr; | |
480 | ||
481 | /* Copy the contents of the old tdata struct. | |
482 | In particular, we want the subformat, since for hpux it was set in | |
483 | hp300hpux.c:swap_exec_header_in and will be used in | |
484 | hp300hpux.c:callback. */ | |
485 | if (oldrawptr != NULL) | |
486 | *abfd->tdata.aout_data = *oldrawptr; | |
487 | ||
488 | abfd->tdata.aout_data->a.hdr = &rawptr->e; | |
116c20d2 | 489 | *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct. */ |
e135f41b NC |
490 | execp = abfd->tdata.aout_data->a.hdr; |
491 | ||
116c20d2 | 492 | /* Set the file flags. */ |
e135f41b NC |
493 | abfd->flags = BFD_NO_FLAGS; |
494 | if (execp->a_drsize || execp->a_trsize) | |
495 | abfd->flags |= HAS_RELOC; | |
116c20d2 | 496 | /* Setting of EXEC_P has been deferred to the bottom of this function. */ |
e135f41b NC |
497 | if (execp->a_syms) |
498 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
499 | if (N_DYNAMIC(*execp)) | |
500 | abfd->flags |= DYNAMIC; | |
501 | ||
502 | if (N_MAGIC (*execp) == ZMAGIC) | |
503 | { | |
504 | abfd->flags |= D_PAGED | WP_TEXT; | |
505 | adata (abfd).magic = z_magic; | |
506 | } | |
e135f41b NC |
507 | else if (N_MAGIC (*execp) == NMAGIC) |
508 | { | |
509 | abfd->flags |= WP_TEXT; | |
510 | adata (abfd).magic = n_magic; | |
511 | } | |
a77e83b7 | 512 | else if (N_MAGIC (*execp) == OMAGIC) |
e135f41b NC |
513 | adata (abfd).magic = o_magic; |
514 | else | |
515 | { | |
516 | /* Should have been checked with N_BADMAG before this routine | |
517 | was called. */ | |
518 | abort (); | |
519 | } | |
520 | ||
521 | bfd_get_start_address (abfd) = execp->a_entry; | |
522 | ||
116c20d2 | 523 | obj_aout_symbols (abfd) = NULL; |
e135f41b NC |
524 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); |
525 | ||
526 | /* The default relocation entry size is that of traditional V7 Unix. */ | |
527 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
528 | ||
116c20d2 | 529 | /* The default symbol entry size is that of traditional Unix. */ |
e135f41b NC |
530 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; |
531 | ||
532 | #ifdef USE_MMAP | |
533 | bfd_init_window (&obj_aout_sym_window (abfd)); | |
534 | bfd_init_window (&obj_aout_string_window (abfd)); | |
535 | #endif | |
116c20d2 | 536 | |
e135f41b NC |
537 | obj_aout_external_syms (abfd) = NULL; |
538 | obj_aout_external_strings (abfd) = NULL; | |
539 | obj_aout_sym_hashes (abfd) = NULL; | |
540 | ||
116c20d2 | 541 | if (! NAME (aout, make_sections) (abfd)) |
e135f41b NC |
542 | return NULL; |
543 | ||
eea6121a AM |
544 | obj_datasec (abfd)->size = execp->a_data; |
545 | obj_bsssec (abfd)->size = execp->a_bss; | |
e135f41b NC |
546 | |
547 | obj_textsec (abfd)->flags = | |
548 | (execp->a_trsize != 0 | |
549 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) | |
550 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
551 | obj_datasec (abfd)->flags = | |
552 | (execp->a_drsize != 0 | |
553 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) | |
554 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
555 | obj_bsssec (abfd)->flags = SEC_ALLOC; | |
556 | ||
557 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
558 | /* The common code can't fill in these things because they depend | |
559 | on either the start address of the text segment, the rounding | |
560 | up of virtual addresses between segments, or the starting file | |
561 | position of the text segment -- all of which varies among different | |
562 | versions of a.out. */ | |
563 | ||
564 | /* Call back to the format-dependent code to fill in the rest of the | |
565 | fields and do any further cleanup. Things that should be filled | |
566 | in by the callback: */ | |
e135f41b NC |
567 | struct exec *execp = exec_hdr (abfd); |
568 | ||
569 | obj_textsec (abfd)->size = N_TXTSIZE(*execp); | |
116c20d2 | 570 | /* Data and bss are already filled in since they're so standard. */ |
e135f41b | 571 | |
116c20d2 | 572 | /* The virtual memory addresses of the sections. */ |
e135f41b NC |
573 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); |
574 | obj_datasec (abfd)->vma = N_DATADDR(*execp); | |
575 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
576 | ||
116c20d2 | 577 | /* The file offsets of the sections. */ |
e135f41b NC |
578 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); |
579 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); | |
580 | ||
116c20d2 | 581 | /* The file offsets of the relocation info. */ |
e135f41b NC |
582 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); |
583 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
584 | ||
585 | /* The file offsets of the string table and symbol table. */ | |
586 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
587 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
588 | ||
589 | /* Determine the architecture and machine type of the object file. */ | |
590 | abfd->obj_arch = bfd_arch_obscure; | |
591 | ||
592 | adata(abfd)->page_size = TARGET_PAGE_SIZE; | |
593 | adata(abfd)->segment_size = SEGMENT_SIZE; | |
594 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
595 | ||
596 | return abfd->xvec; | |
597 | ||
598 | /* The architecture is encoded in various ways in various a.out variants, | |
599 | or is not encoded at all in some of them. The relocation size depends | |
600 | on the architecture and the a.out variant. Finally, the return value | |
601 | is the bfd_target vector in use. If an error occurs, return zero and | |
602 | set bfd_error to the appropriate error code. | |
603 | ||
604 | Formats such as b.out, which have additional fields in the a.out | |
605 | header, should cope with them in this callback as well. */ | |
116c20d2 | 606 | #endif /* DOCUMENTATION */ |
e135f41b NC |
607 | |
608 | result = (*callback_to_real_object_p)(abfd); | |
609 | ||
610 | /* Now that the segment addresses have been worked out, take a better | |
611 | guess at whether the file is executable. If the entry point | |
612 | is within the text segment, assume it is. (This makes files | |
613 | executable even if their entry point address is 0, as long as | |
614 | their text starts at zero.). | |
615 | ||
616 | This test had to be changed to deal with systems where the text segment | |
617 | runs at a different location than the default. The problem is that the | |
618 | entry address can appear to be outside the text segment, thus causing an | |
619 | erroneous conclusion that the file isn't executable. | |
620 | ||
621 | To fix this, we now accept any non-zero entry point as an indication of | |
622 | executability. This will work most of the time, since only the linker | |
623 | sets the entry point, and that is likely to be non-zero for most systems. */ | |
624 | ||
625 | if (execp->a_entry != 0 | |
626 | || (execp->a_entry >= obj_textsec(abfd)->vma | |
eea6121a | 627 | && execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->size)) |
e135f41b NC |
628 | abfd->flags |= EXEC_P; |
629 | #ifdef STAT_FOR_EXEC | |
630 | else | |
631 | { | |
632 | struct stat stat_buf; | |
633 | ||
634 | /* The original heuristic doesn't work in some important cases. | |
635 | The a.out file has no information about the text start | |
636 | address. For files (like kernels) linked to non-standard | |
637 | addresses (ld -Ttext nnn) the entry point may not be between | |
638 | the default text start (obj_textsec(abfd)->vma) and | |
639 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
640 | issue. Many kernels are loaded at non standard addresses. */ | |
641 | if (abfd->iostream != NULL | |
642 | && (abfd->flags & BFD_IN_MEMORY) == 0 | |
643 | && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0) | |
644 | && ((stat_buf.st_mode & 0111) != 0)) | |
645 | abfd->flags |= EXEC_P; | |
646 | } | |
647 | #endif /* STAT_FOR_EXEC */ | |
648 | ||
0e71e495 | 649 | if (!result) |
e135f41b NC |
650 | { |
651 | free (rawptr); | |
652 | abfd->tdata.aout_data = oldrawptr; | |
653 | } | |
654 | return result; | |
655 | } | |
656 | ||
116c20d2 | 657 | /* Initialize ABFD for use with a.out files. */ |
e135f41b | 658 | |
b34976b6 | 659 | bfd_boolean |
116c20d2 | 660 | NAME (aout, mkobject) (bfd *abfd) |
e135f41b NC |
661 | { |
662 | struct aout_data_struct *rawptr; | |
dc810e39 | 663 | bfd_size_type amt = sizeof (struct aout_data_struct); |
e135f41b NC |
664 | |
665 | bfd_set_error (bfd_error_system_call); | |
666 | ||
116c20d2 NC |
667 | /* Use an intermediate variable for clarity. */ |
668 | rawptr = bfd_zalloc (abfd, amt); | |
e135f41b NC |
669 | |
670 | if (rawptr == NULL) | |
b34976b6 | 671 | return FALSE; |
e135f41b NC |
672 | |
673 | abfd->tdata.aout_data = rawptr; | |
674 | exec_hdr (abfd) = &(rawptr->e); | |
675 | ||
116c20d2 NC |
676 | obj_textsec (abfd) = NULL; |
677 | obj_datasec (abfd) = NULL; | |
678 | obj_bsssec (abfd) = NULL; | |
e135f41b | 679 | |
b34976b6 | 680 | return TRUE; |
e135f41b NC |
681 | } |
682 | ||
116c20d2 NC |
683 | /* Keep track of machine architecture and machine type for |
684 | a.out's. Return the <<machine_type>> for a particular | |
685 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
686 | and machine can't be represented in a.out format. | |
e135f41b | 687 | |
116c20d2 NC |
688 | If the architecture is understood, machine type 0 (default) |
689 | is always understood. */ | |
e135f41b NC |
690 | |
691 | enum machine_type | |
116c20d2 NC |
692 | NAME (aout, machine_type) (enum bfd_architecture arch, |
693 | unsigned long machine, | |
694 | bfd_boolean *unknown) | |
e135f41b NC |
695 | { |
696 | enum machine_type arch_flags; | |
697 | ||
698 | arch_flags = M_UNKNOWN; | |
b34976b6 | 699 | *unknown = TRUE; |
e135f41b NC |
700 | |
701 | switch (arch) | |
702 | { | |
703 | case bfd_arch_sparc: | |
704 | if (machine == 0 | |
705 | || machine == bfd_mach_sparc | |
706 | || machine == bfd_mach_sparc_sparclite | |
707 | || machine == bfd_mach_sparc_v9) | |
708 | arch_flags = M_SPARC; | |
709 | else if (machine == bfd_mach_sparc_sparclet) | |
710 | arch_flags = M_SPARCLET; | |
711 | break; | |
712 | ||
713 | case bfd_arch_m68k: | |
714 | switch (machine) | |
715 | { | |
716 | case 0: arch_flags = M_68010; break; | |
b34976b6 | 717 | case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = FALSE; break; |
e135f41b NC |
718 | case bfd_mach_m68010: arch_flags = M_68010; break; |
719 | case bfd_mach_m68020: arch_flags = M_68020; break; | |
720 | default: arch_flags = M_UNKNOWN; break; | |
721 | } | |
722 | break; | |
723 | ||
724 | case bfd_arch_i386: | |
250d94fd AM |
725 | if (machine == 0 |
726 | || machine == bfd_mach_i386_i386 | |
727 | || machine == bfd_mach_i386_i386_intel_syntax) | |
728 | arch_flags = M_386; | |
e135f41b NC |
729 | break; |
730 | ||
e135f41b NC |
731 | case bfd_arch_arm: |
732 | if (machine == 0) arch_flags = M_ARM; | |
733 | break; | |
734 | ||
735 | case bfd_arch_mips: | |
736 | switch (machine) | |
737 | { | |
738 | case 0: | |
739 | case 2000: | |
740 | case bfd_mach_mips3000: | |
741 | arch_flags = M_MIPS1; | |
742 | break; | |
116c20d2 | 743 | case bfd_mach_mips4000: /* MIPS3 */ |
e135f41b | 744 | case bfd_mach_mips4400: |
116c20d2 NC |
745 | case bfd_mach_mips8000: /* MIPS4 */ |
746 | case bfd_mach_mips6000: /* Real MIPS2: */ | |
e135f41b NC |
747 | arch_flags = M_MIPS2; |
748 | break; | |
749 | default: | |
750 | arch_flags = M_UNKNOWN; | |
751 | break; | |
752 | } | |
753 | break; | |
754 | ||
755 | case bfd_arch_ns32k: | |
756 | switch (machine) | |
757 | { | |
758 | case 0: arch_flags = M_NS32532; break; | |
759 | case 32032: arch_flags = M_NS32032; break; | |
760 | case 32532: arch_flags = M_NS32532; break; | |
761 | default: arch_flags = M_UNKNOWN; break; | |
762 | } | |
763 | break; | |
764 | ||
765 | case bfd_arch_pdp11: | |
766 | /* TODO: arch_flags = M_PDP11; */ | |
b34976b6 | 767 | *unknown = FALSE; |
e135f41b NC |
768 | break; |
769 | ||
770 | case bfd_arch_vax: | |
b34976b6 | 771 | *unknown = FALSE; |
e135f41b | 772 | break; |
dc810e39 | 773 | |
e135f41b NC |
774 | default: |
775 | arch_flags = M_UNKNOWN; | |
776 | } | |
777 | ||
778 | if (arch_flags != M_UNKNOWN) | |
b34976b6 | 779 | *unknown = FALSE; |
e135f41b NC |
780 | |
781 | return arch_flags; | |
782 | } | |
783 | ||
116c20d2 NC |
784 | /* Set the architecture and the machine of the ABFD to the |
785 | values ARCH and MACHINE. Verify that @ABFD's format | |
786 | can support the architecture required. */ | |
e135f41b | 787 | |
b34976b6 | 788 | bfd_boolean |
116c20d2 NC |
789 | NAME (aout, set_arch_mach) (bfd *abfd, |
790 | enum bfd_architecture arch, | |
791 | unsigned long machine) | |
e135f41b NC |
792 | { |
793 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) | |
b34976b6 | 794 | return FALSE; |
e135f41b NC |
795 | |
796 | if (arch != bfd_arch_unknown) | |
797 | { | |
b34976b6 | 798 | bfd_boolean unknown; |
e135f41b | 799 | |
116c20d2 | 800 | NAME (aout, machine_type) (arch, machine, &unknown); |
e135f41b | 801 | if (unknown) |
b34976b6 | 802 | return FALSE; |
e135f41b NC |
803 | } |
804 | ||
805 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
806 | ||
807 | return (*aout_backend_info(abfd)->set_sizes) (abfd); | |
808 | } | |
809 | ||
810 | static void | |
116c20d2 | 811 | adjust_o_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
812 | { |
813 | file_ptr pos = adata (abfd).exec_bytes_size; | |
814 | bfd_vma vma = 0; | |
815 | int pad = 0; | |
816 | ||
817 | /* Text. */ | |
818 | obj_textsec (abfd)->filepos = pos; | |
819 | if (! obj_textsec (abfd)->user_set_vma) | |
820 | obj_textsec (abfd)->vma = vma; | |
821 | else | |
822 | vma = obj_textsec (abfd)->vma; | |
823 | ||
eea6121a AM |
824 | pos += obj_textsec (abfd)->size; |
825 | vma += obj_textsec (abfd)->size; | |
e135f41b NC |
826 | |
827 | /* Data. */ | |
828 | if (!obj_datasec (abfd)->user_set_vma) | |
829 | { | |
eea6121a | 830 | obj_textsec (abfd)->size += pad; |
e135f41b NC |
831 | pos += pad; |
832 | vma += pad; | |
833 | obj_datasec (abfd)->vma = vma; | |
834 | } | |
835 | else | |
836 | vma = obj_datasec (abfd)->vma; | |
837 | obj_datasec (abfd)->filepos = pos; | |
eea6121a AM |
838 | pos += obj_datasec (abfd)->size; |
839 | vma += obj_datasec (abfd)->size; | |
e135f41b NC |
840 | |
841 | /* BSS. */ | |
842 | if (! obj_bsssec (abfd)->user_set_vma) | |
843 | { | |
eea6121a | 844 | obj_datasec (abfd)->size += pad; |
e135f41b NC |
845 | pos += pad; |
846 | vma += pad; | |
847 | obj_bsssec (abfd)->vma = vma; | |
848 | } | |
849 | else | |
850 | { | |
08da05b0 | 851 | /* The VMA of the .bss section is set by the VMA of the |
e135f41b NC |
852 | .data section plus the size of the .data section. We may |
853 | need to add padding bytes to make this true. */ | |
854 | pad = obj_bsssec (abfd)->vma - vma; | |
855 | if (pad > 0) | |
856 | { | |
eea6121a | 857 | obj_datasec (abfd)->size += pad; |
e135f41b NC |
858 | pos += pad; |
859 | } | |
860 | } | |
861 | obj_bsssec (abfd)->filepos = pos; | |
862 | ||
863 | /* Fix up the exec header. */ | |
eea6121a AM |
864 | execp->a_text = obj_textsec (abfd)->size; |
865 | execp->a_data = obj_datasec (abfd)->size; | |
866 | execp->a_bss = obj_bsssec (abfd)->size; | |
e135f41b NC |
867 | N_SET_MAGIC (*execp, OMAGIC); |
868 | } | |
869 | ||
870 | static void | |
116c20d2 | 871 | adjust_z_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
872 | { |
873 | bfd_size_type data_pad, text_pad; | |
874 | file_ptr text_end; | |
dc810e39 | 875 | const struct aout_backend_data *abdp; |
e135f41b | 876 | int ztih; /* Nonzero if text includes exec header. */ |
dc810e39 | 877 | |
e135f41b NC |
878 | abdp = aout_backend_info (abfd); |
879 | ||
880 | /* Text. */ | |
881 | ztih = (abdp != NULL | |
882 | && (abdp->text_includes_header | |
883 | || obj_aout_subformat (abfd) == q_magic_format)); | |
884 | obj_textsec(abfd)->filepos = (ztih | |
885 | ? adata(abfd).exec_bytes_size | |
886 | : adata(abfd).zmagic_disk_block_size); | |
887 | if (! obj_textsec(abfd)->user_set_vma) | |
888 | { | |
889 | /* ?? Do we really need to check for relocs here? */ | |
890 | obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC) | |
891 | ? 0 | |
892 | : (ztih | |
893 | ? (abdp->default_text_vma | |
894 | + adata (abfd).exec_bytes_size) | |
895 | : abdp->default_text_vma)); | |
896 | text_pad = 0; | |
897 | } | |
898 | else | |
899 | { | |
900 | /* The .text section is being loaded at an unusual address. We | |
901 | may need to pad it such that the .data section starts at a page | |
902 | boundary. */ | |
903 | if (ztih) | |
904 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
905 | & (adata (abfd).page_size - 1)); | |
906 | else | |
907 | text_pad = ((- obj_textsec (abfd)->vma) | |
908 | & (adata (abfd).page_size - 1)); | |
909 | } | |
910 | ||
911 | /* Find start of data. */ | |
912 | if (ztih) | |
913 | { | |
eea6121a | 914 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size; |
e135f41b NC |
915 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
916 | } | |
917 | else | |
918 | { | |
919 | /* Note that if page_size == zmagic_disk_block_size, then | |
920 | filepos == page_size, and this case is the same as the ztih | |
921 | case. */ | |
eea6121a | 922 | text_end = obj_textsec (abfd)->size; |
e135f41b NC |
923 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
924 | text_end += obj_textsec (abfd)->filepos; | |
925 | } | |
926 | ||
eea6121a | 927 | obj_textsec (abfd)->size += text_pad; |
e135f41b NC |
928 | text_end += text_pad; |
929 | ||
930 | /* Data. */ | |
931 | if (!obj_datasec(abfd)->user_set_vma) | |
932 | { | |
933 | bfd_vma vma; | |
eea6121a | 934 | vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->size; |
e135f41b NC |
935 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); |
936 | } | |
937 | if (abdp && abdp->zmagic_mapped_contiguous) | |
938 | { | |
939 | text_pad = (obj_datasec(abfd)->vma | |
940 | - obj_textsec(abfd)->vma | |
eea6121a AM |
941 | - obj_textsec(abfd)->size); |
942 | obj_textsec(abfd)->size += text_pad; | |
e135f41b NC |
943 | } |
944 | obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos | |
eea6121a | 945 | + obj_textsec (abfd)->size); |
dc810e39 | 946 | |
e135f41b | 947 | /* Fix up exec header while we're at it. */ |
eea6121a | 948 | execp->a_text = obj_textsec(abfd)->size; |
e135f41b NC |
949 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
950 | execp->a_text += adata(abfd).exec_bytes_size; | |
a77e83b7 | 951 | N_SET_MAGIC (*execp, ZMAGIC); |
e135f41b NC |
952 | |
953 | /* Spec says data section should be rounded up to page boundary. */ | |
eea6121a AM |
954 | obj_datasec(abfd)->size |
955 | = align_power (obj_datasec(abfd)->size, | |
e135f41b | 956 | obj_bsssec(abfd)->alignment_power); |
eea6121a | 957 | execp->a_data = BFD_ALIGN (obj_datasec(abfd)->size, |
e135f41b | 958 | adata(abfd).page_size); |
eea6121a | 959 | data_pad = execp->a_data - obj_datasec(abfd)->size; |
e135f41b NC |
960 | |
961 | /* BSS. */ | |
962 | if (!obj_bsssec(abfd)->user_set_vma) | |
963 | obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma | |
eea6121a | 964 | + obj_datasec(abfd)->size); |
e135f41b NC |
965 | /* If the BSS immediately follows the data section and extra space |
966 | in the page is left after the data section, fudge data | |
967 | in the header so that the bss section looks smaller by that | |
968 | amount. We'll start the bss section there, and lie to the OS. | |
969 | (Note that a linker script, as well as the above assignment, | |
970 | could have explicitly set the BSS vma to immediately follow | |
971 | the data section.) */ | |
972 | if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power) | |
eea6121a AM |
973 | == obj_datasec(abfd)->vma + obj_datasec(abfd)->size) |
974 | execp->a_bss = (data_pad > obj_bsssec(abfd)->size) ? 0 : | |
975 | obj_bsssec(abfd)->size - data_pad; | |
e135f41b | 976 | else |
eea6121a | 977 | execp->a_bss = obj_bsssec(abfd)->size; |
e135f41b NC |
978 | } |
979 | ||
980 | static void | |
116c20d2 | 981 | adjust_n_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
982 | { |
983 | file_ptr pos = adata(abfd).exec_bytes_size; | |
984 | bfd_vma vma = 0; | |
985 | int pad; | |
dc810e39 | 986 | |
e135f41b NC |
987 | /* Text. */ |
988 | obj_textsec(abfd)->filepos = pos; | |
989 | if (!obj_textsec(abfd)->user_set_vma) | |
990 | obj_textsec(abfd)->vma = vma; | |
991 | else | |
992 | vma = obj_textsec(abfd)->vma; | |
eea6121a AM |
993 | pos += obj_textsec(abfd)->size; |
994 | vma += obj_textsec(abfd)->size; | |
e135f41b NC |
995 | |
996 | /* Data. */ | |
997 | obj_datasec(abfd)->filepos = pos; | |
998 | if (!obj_datasec(abfd)->user_set_vma) | |
999 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
1000 | vma = obj_datasec(abfd)->vma; | |
dc810e39 | 1001 | |
e135f41b | 1002 | /* Since BSS follows data immediately, see if it needs alignment. */ |
eea6121a | 1003 | vma += obj_datasec(abfd)->size; |
e135f41b | 1004 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; |
eea6121a AM |
1005 | obj_datasec(abfd)->size += pad; |
1006 | pos += obj_datasec(abfd)->size; | |
e135f41b NC |
1007 | |
1008 | /* BSS. */ | |
1009 | if (!obj_bsssec(abfd)->user_set_vma) | |
1010 | obj_bsssec(abfd)->vma = vma; | |
1011 | else | |
1012 | vma = obj_bsssec(abfd)->vma; | |
1013 | ||
1014 | /* Fix up exec header. */ | |
eea6121a AM |
1015 | execp->a_text = obj_textsec(abfd)->size; |
1016 | execp->a_data = obj_datasec(abfd)->size; | |
1017 | execp->a_bss = obj_bsssec(abfd)->size; | |
e135f41b NC |
1018 | N_SET_MAGIC (*execp, NMAGIC); |
1019 | } | |
1020 | ||
b34976b6 | 1021 | bfd_boolean |
116c20d2 NC |
1022 | NAME (aout, adjust_sizes_and_vmas) (bfd *abfd, |
1023 | bfd_size_type *text_size, | |
1024 | file_ptr * text_end ATTRIBUTE_UNUSED) | |
e135f41b NC |
1025 | { |
1026 | struct internal_exec *execp = exec_hdr (abfd); | |
1027 | ||
116c20d2 | 1028 | if (! NAME (aout, make_sections) (abfd)) |
b34976b6 | 1029 | return FALSE; |
e135f41b NC |
1030 | |
1031 | if (adata(abfd).magic != undecided_magic) | |
b34976b6 | 1032 | return TRUE; |
e135f41b | 1033 | |
eea6121a AM |
1034 | obj_textsec(abfd)->size = |
1035 | align_power(obj_textsec(abfd)->size, | |
e135f41b NC |
1036 | obj_textsec(abfd)->alignment_power); |
1037 | ||
eea6121a | 1038 | *text_size = obj_textsec (abfd)->size; |
e135f41b NC |
1039 | /* Rule (heuristic) for when to pad to a new page. Note that there |
1040 | are (at least) two ways demand-paged (ZMAGIC) files have been | |
1041 | handled. Most Berkeley-based systems start the text segment at | |
1042 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text | |
1043 | segment right after the exec header; the latter is counted in the | |
1044 | text segment size, and is paged in by the kernel with the rest of | |
1045 | the text. */ | |
1046 | ||
1047 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1048 | to understand enough to implement it. Better would probably be to go | |
1049 | right from BFD flags to alignment/positioning characteristics. But the | |
1050 | old code was sloppy enough about handling the flags, and had enough | |
1051 | other magic, that it was a little hard for me to understand. I think | |
1052 | I understand it better now, but I haven't time to do the cleanup this | |
1053 | minute. */ | |
1054 | ||
1055 | if (abfd->flags & WP_TEXT) | |
1056 | adata(abfd).magic = n_magic; | |
1057 | else | |
1058 | adata(abfd).magic = o_magic; | |
1059 | ||
1060 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1061 | #if __GNUC__ >= 2 | |
1062 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1063 | ({ char *str; | |
1064 | switch (adata(abfd).magic) { | |
1065 | case n_magic: str = "NMAGIC"; break; | |
1066 | case o_magic: str = "OMAGIC"; break; | |
1067 | case z_magic: str = "ZMAGIC"; break; | |
1068 | default: abort (); | |
1069 | } | |
1070 | str; | |
1071 | }), | |
eea6121a | 1072 | obj_textsec(abfd)->vma, obj_textsec(abfd)->size, |
e135f41b | 1073 | obj_textsec(abfd)->alignment_power, |
eea6121a | 1074 | obj_datasec(abfd)->vma, obj_datasec(abfd)->size, |
e135f41b | 1075 | obj_datasec(abfd)->alignment_power, |
eea6121a | 1076 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->size, |
e135f41b NC |
1077 | obj_bsssec(abfd)->alignment_power); |
1078 | #endif | |
1079 | #endif | |
1080 | ||
1081 | switch (adata(abfd).magic) | |
1082 | { | |
1083 | case o_magic: | |
1084 | adjust_o_magic (abfd, execp); | |
1085 | break; | |
1086 | case z_magic: | |
1087 | adjust_z_magic (abfd, execp); | |
1088 | break; | |
1089 | case n_magic: | |
1090 | adjust_n_magic (abfd, execp); | |
1091 | break; | |
1092 | default: | |
1093 | abort (); | |
1094 | } | |
1095 | ||
1096 | #ifdef BFD_AOUT_DEBUG | |
1097 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
eea6121a | 1098 | obj_textsec(abfd)->vma, obj_textsec(abfd)->size, |
e135f41b | 1099 | obj_textsec(abfd)->filepos, |
eea6121a | 1100 | obj_datasec(abfd)->vma, obj_datasec(abfd)->size, |
e135f41b | 1101 | obj_datasec(abfd)->filepos, |
eea6121a | 1102 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->size); |
e135f41b NC |
1103 | #endif |
1104 | ||
b34976b6 | 1105 | return TRUE; |
e135f41b NC |
1106 | } |
1107 | ||
116c20d2 | 1108 | /* Called by the BFD in response to a bfd_make_section request. */ |
e135f41b | 1109 | |
b34976b6 | 1110 | bfd_boolean |
116c20d2 | 1111 | NAME (aout, new_section_hook) (bfd *abfd, asection *newsect) |
e135f41b | 1112 | { |
116c20d2 | 1113 | /* Align to double at least. */ |
e135f41b NC |
1114 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; |
1115 | ||
e135f41b NC |
1116 | if (bfd_get_format (abfd) == bfd_object) |
1117 | { | |
1118 | if (obj_textsec (abfd) == NULL | |
f592407e | 1119 | && !strcmp (newsect->name, ".text")) |
e135f41b NC |
1120 | { |
1121 | obj_textsec(abfd)= newsect; | |
1122 | newsect->target_index = N_TEXT; | |
e135f41b | 1123 | } |
f592407e AM |
1124 | else if (obj_datasec (abfd) == NULL |
1125 | && !strcmp (newsect->name, ".data")) | |
1126 | { | |
1127 | obj_datasec (abfd) = newsect; | |
1128 | newsect->target_index = N_DATA; | |
1129 | } | |
1130 | else if (obj_bsssec (abfd) == NULL | |
1131 | && !strcmp (newsect->name, ".bss")) | |
1132 | { | |
1133 | obj_bsssec (abfd) = newsect; | |
1134 | newsect->target_index = N_BSS; | |
1135 | } | |
1136 | } | |
e135f41b | 1137 | |
116c20d2 | 1138 | /* We allow more than three sections internally. */ |
f592407e | 1139 | return _bfd_generic_new_section_hook (abfd, newsect); |
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 | |
a6b96beb AM |
2379 | NAME (aout, sizeof_headers) (bfd *abfd, |
2380 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
e135f41b | 2381 | { |
116c20d2 | 2382 | return adata (abfd).exec_bytes_size; |
e135f41b NC |
2383 | } |
2384 | ||
2385 | /* Free all information we have cached for this BFD. We can always | |
2386 | read it again later if we need it. */ | |
2387 | ||
b34976b6 | 2388 | bfd_boolean |
116c20d2 | 2389 | NAME (aout, bfd_free_cached_info) (bfd *abfd) |
e135f41b NC |
2390 | { |
2391 | asection *o; | |
2392 | ||
2393 | if (bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 2394 | return TRUE; |
e135f41b NC |
2395 | |
2396 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } | |
2397 | BFCI_FREE (obj_aout_symbols (abfd)); | |
116c20d2 | 2398 | |
e135f41b NC |
2399 | #ifdef USE_MMAP |
2400 | obj_aout_external_syms (abfd) = 0; | |
2401 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2402 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2403 | obj_aout_external_strings (abfd) = 0; | |
2404 | #else | |
2405 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2406 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2407 | #endif | |
116c20d2 | 2408 | for (o = abfd->sections; o != NULL; o = o->next) |
e135f41b NC |
2409 | BFCI_FREE (o->relocation); |
2410 | #undef BFCI_FREE | |
2411 | ||
b34976b6 | 2412 | return TRUE; |
e135f41b NC |
2413 | } |
2414 | \f | |
e135f41b NC |
2415 | /* Routine to create an entry in an a.out link hash table. */ |
2416 | ||
2417 | struct bfd_hash_entry * | |
116c20d2 NC |
2418 | NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry, |
2419 | struct bfd_hash_table *table, | |
2420 | const char *string) | |
e135f41b NC |
2421 | { |
2422 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2423 | ||
2424 | /* Allocate the structure if it has not already been allocated by a | |
2425 | subclass. */ | |
116c20d2 NC |
2426 | if (ret == NULL) |
2427 | ret = bfd_hash_allocate (table, sizeof (* ret)); | |
2428 | if (ret == NULL) | |
2429 | return NULL; | |
e135f41b NC |
2430 | |
2431 | /* Call the allocation method of the superclass. */ | |
116c20d2 NC |
2432 | ret = (struct aout_link_hash_entry *) |
2433 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string); | |
e135f41b NC |
2434 | if (ret) |
2435 | { | |
2436 | /* Set local fields. */ | |
b34976b6 | 2437 | ret->written = FALSE; |
e135f41b NC |
2438 | ret->indx = -1; |
2439 | } | |
2440 | ||
2441 | return (struct bfd_hash_entry *) ret; | |
2442 | } | |
2443 | ||
2444 | /* Initialize an a.out link hash table. */ | |
2445 | ||
b34976b6 | 2446 | bfd_boolean |
116c20d2 NC |
2447 | NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table, |
2448 | bfd *abfd, | |
2449 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
2450 | struct bfd_hash_table *, | |
66eb6687 AM |
2451 | const char *), |
2452 | unsigned int entsize) | |
e135f41b | 2453 | { |
66eb6687 | 2454 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
e135f41b NC |
2455 | } |
2456 | ||
2457 | /* Create an a.out link hash table. */ | |
2458 | ||
2459 | struct bfd_link_hash_table * | |
116c20d2 | 2460 | NAME (aout, link_hash_table_create) (bfd *abfd) |
e135f41b NC |
2461 | { |
2462 | struct aout_link_hash_table *ret; | |
dc810e39 | 2463 | bfd_size_type amt = sizeof (struct aout_link_hash_table); |
e135f41b | 2464 | |
116c20d2 | 2465 | ret = bfd_alloc (abfd, amt); |
e135f41b | 2466 | if (ret == NULL) |
116c20d2 NC |
2467 | return NULL; |
2468 | if (! NAME (aout, link_hash_table_init) (ret, abfd, | |
66eb6687 AM |
2469 | NAME (aout, link_hash_newfunc), |
2470 | sizeof (struct aout_link_hash_entry))) | |
e135f41b NC |
2471 | { |
2472 | free (ret); | |
116c20d2 | 2473 | return NULL; |
e135f41b NC |
2474 | } |
2475 | return &ret->root; | |
2476 | } | |
2477 | ||
116c20d2 NC |
2478 | /* Free up the internal symbols read from an a.out file. */ |
2479 | ||
2480 | static bfd_boolean | |
2481 | aout_link_free_symbols (bfd *abfd) | |
2482 | { | |
2483 | if (obj_aout_external_syms (abfd) != NULL) | |
2484 | { | |
2485 | #ifdef USE_MMAP | |
2486 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2487 | #else | |
2488 | free ((void *) obj_aout_external_syms (abfd)); | |
2489 | #endif | |
2490 | obj_aout_external_syms (abfd) = NULL; | |
2491 | } | |
2492 | ||
2493 | if (obj_aout_external_strings (abfd) != NULL) | |
2494 | { | |
2495 | #ifdef USE_MMAP | |
2496 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2497 | #else | |
2498 | free ((void *) obj_aout_external_strings (abfd)); | |
2499 | #endif | |
2500 | obj_aout_external_strings (abfd) = NULL; | |
2501 | } | |
2502 | return TRUE; | |
2503 | } | |
2504 | ||
e135f41b NC |
2505 | /* Given an a.out BFD, add symbols to the global hash table as |
2506 | appropriate. */ | |
2507 | ||
b34976b6 | 2508 | bfd_boolean |
116c20d2 | 2509 | NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info) |
e135f41b NC |
2510 | { |
2511 | switch (bfd_get_format (abfd)) | |
2512 | { | |
2513 | case bfd_object: | |
2514 | return aout_link_add_object_symbols (abfd, info); | |
2515 | case bfd_archive: | |
2516 | return _bfd_generic_link_add_archive_symbols | |
2517 | (abfd, info, aout_link_check_archive_element); | |
2518 | default: | |
2519 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2520 | return FALSE; |
e135f41b NC |
2521 | } |
2522 | } | |
2523 | ||
2524 | /* Add symbols from an a.out object file. */ | |
2525 | ||
b34976b6 | 2526 | static bfd_boolean |
116c20d2 | 2527 | aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
e135f41b NC |
2528 | { |
2529 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 2530 | return FALSE; |
e135f41b | 2531 | if (! aout_link_add_symbols (abfd, info)) |
b34976b6 | 2532 | return FALSE; |
e135f41b NC |
2533 | if (! info->keep_memory) |
2534 | { | |
2535 | if (! aout_link_free_symbols (abfd)) | |
b34976b6 | 2536 | return FALSE; |
e135f41b | 2537 | } |
b34976b6 | 2538 | return TRUE; |
e135f41b NC |
2539 | } |
2540 | ||
e135f41b NC |
2541 | /* Look through the internal symbols to see if this object file should |
2542 | be included in the link. We should include this object file if it | |
2543 | defines any symbols which are currently undefined. If this object | |
2544 | file defines a common symbol, then we may adjust the size of the | |
2545 | known symbol but we do not include the object file in the link | |
2546 | (unless there is some other reason to include it). */ | |
2547 | ||
b34976b6 | 2548 | static bfd_boolean |
116c20d2 NC |
2549 | aout_link_check_ar_symbols (bfd *abfd, |
2550 | struct bfd_link_info *info, | |
2551 | bfd_boolean *pneeded) | |
e135f41b | 2552 | { |
116c20d2 | 2553 | struct external_nlist *p; |
e135f41b NC |
2554 | struct external_nlist *pend; |
2555 | char *strings; | |
2556 | ||
b34976b6 | 2557 | *pneeded = FALSE; |
e135f41b NC |
2558 | |
2559 | /* Look through all the symbols. */ | |
2560 | p = obj_aout_external_syms (abfd); | |
2561 | pend = p + obj_aout_external_sym_count (abfd); | |
2562 | strings = obj_aout_external_strings (abfd); | |
2563 | for (; p < pend; p++) | |
2564 | { | |
dc810e39 | 2565 | int type = H_GET_8 (abfd, p->e_type); |
e135f41b NC |
2566 | const char *name; |
2567 | struct bfd_link_hash_entry *h; | |
2568 | ||
2569 | /* Ignore symbols that are not externally visible. This is an | |
2570 | optimization only, as we check the type more thoroughly | |
2571 | below. */ | |
2572 | if ((type & N_EXT) == 0 | |
2573 | || type == N_FN) | |
2574 | continue; | |
2575 | ||
2576 | name = strings + GET_WORD (abfd, p->e_strx); | |
b34976b6 | 2577 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
e135f41b NC |
2578 | |
2579 | /* We are only interested in symbols that are currently | |
2580 | undefined or common. */ | |
116c20d2 | 2581 | if (h == NULL |
e135f41b NC |
2582 | || (h->type != bfd_link_hash_undefined |
2583 | && h->type != bfd_link_hash_common)) | |
2584 | continue; | |
2585 | ||
2586 | if (type == (N_TEXT | N_EXT) | |
2587 | || type == (N_DATA | N_EXT) | |
2588 | || type == (N_BSS | N_EXT) | |
2589 | || type == (N_ABS | N_EXT)) | |
2590 | { | |
2591 | /* This object file defines this symbol. We must link it | |
2592 | in. This is true regardless of whether the current | |
2593 | definition of the symbol is undefined or common. If the | |
2594 | current definition is common, we have a case in which we | |
2595 | have already seen an object file including | |
2596 | int a; | |
2597 | and this object file from the archive includes | |
2598 | int a = 5; | |
2599 | In such a case we must include this object file. | |
2600 | ||
2601 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
2602 | element if the symbol is defined in the .data section, | |
2603 | but not if it is defined in the .text section. That | |
2604 | seems a bit crazy to me, and I haven't implemented it. | |
2605 | However, it might be correct. */ | |
2606 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
b34976b6 AM |
2607 | return FALSE; |
2608 | *pneeded = TRUE; | |
2609 | return TRUE; | |
e135f41b NC |
2610 | } |
2611 | ||
2612 | if (type == (N_UNDF | N_EXT)) | |
2613 | { | |
2614 | bfd_vma value; | |
2615 | ||
2616 | value = GET_WORD (abfd, p->e_value); | |
2617 | if (value != 0) | |
2618 | { | |
2619 | /* This symbol is common in the object from the archive | |
2620 | file. */ | |
2621 | if (h->type == bfd_link_hash_undefined) | |
2622 | { | |
2623 | bfd *symbfd; | |
2624 | unsigned int power; | |
2625 | ||
2626 | symbfd = h->u.undef.abfd; | |
116c20d2 | 2627 | if (symbfd == NULL) |
e135f41b NC |
2628 | { |
2629 | /* This symbol was created as undefined from | |
2630 | outside BFD. We assume that we should link | |
2631 | in the object file. This is done for the -u | |
2632 | option in the linker. */ | |
116c20d2 NC |
2633 | if (! (*info->callbacks->add_archive_element) |
2634 | (info, abfd, name)) | |
b34976b6 AM |
2635 | return FALSE; |
2636 | *pneeded = TRUE; | |
2637 | return TRUE; | |
e135f41b NC |
2638 | } |
2639 | /* Turn the current link symbol into a common | |
2640 | symbol. It is already on the undefs list. */ | |
2641 | h->type = bfd_link_hash_common; | |
116c20d2 NC |
2642 | h->u.c.p = bfd_hash_allocate (&info->hash->table, |
2643 | sizeof (struct bfd_link_hash_common_entry)); | |
e135f41b | 2644 | if (h->u.c.p == NULL) |
b34976b6 | 2645 | return FALSE; |
e135f41b NC |
2646 | |
2647 | h->u.c.size = value; | |
2648 | ||
2649 | /* FIXME: This isn't quite right. The maximum | |
2650 | alignment of a common symbol should be set by the | |
2651 | architecture of the output file, not of the input | |
2652 | file. */ | |
2653 | power = bfd_log2 (value); | |
2654 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
2655 | power = bfd_get_arch_info (abfd)->section_align_power; | |
2656 | h->u.c.p->alignment_power = power; | |
2657 | ||
2658 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
2659 | "COMMON"); | |
2660 | } | |
2661 | else | |
2662 | { | |
2663 | /* Adjust the size of the common symbol if | |
2664 | necessary. */ | |
2665 | if (value > h->u.c.size) | |
2666 | h->u.c.size = value; | |
2667 | } | |
2668 | } | |
2669 | } | |
2670 | } | |
2671 | ||
2672 | /* We do not need this object file. */ | |
b34976b6 | 2673 | return TRUE; |
e135f41b NC |
2674 | } |
2675 | ||
116c20d2 NC |
2676 | /* Check a single archive element to see if we need to include it in |
2677 | the link. *PNEEDED is set according to whether this element is | |
2678 | needed in the link or not. This is called from | |
2679 | _bfd_generic_link_add_archive_symbols. */ | |
2680 | ||
2681 | static bfd_boolean | |
2682 | aout_link_check_archive_element (bfd *abfd, | |
2683 | struct bfd_link_info *info, | |
2684 | bfd_boolean *pneeded) | |
2685 | { | |
2686 | if (! aout_get_external_symbols (abfd)) | |
2687 | return FALSE; | |
2688 | ||
2689 | if (! aout_link_check_ar_symbols (abfd, info, pneeded)) | |
2690 | return FALSE; | |
2691 | ||
2692 | if (*pneeded) | |
2693 | { | |
2694 | if (! aout_link_add_symbols (abfd, info)) | |
2695 | return FALSE; | |
2696 | } | |
2697 | ||
2698 | if (! info->keep_memory || ! *pneeded) | |
2699 | { | |
2700 | if (! aout_link_free_symbols (abfd)) | |
2701 | return FALSE; | |
2702 | } | |
2703 | ||
2704 | return TRUE; | |
2705 | } | |
2706 | ||
e135f41b NC |
2707 | /* Add all symbols from an object file to the hash table. */ |
2708 | ||
b34976b6 | 2709 | static bfd_boolean |
116c20d2 | 2710 | aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
e135f41b | 2711 | { |
b34976b6 | 2712 | bfd_boolean (*add_one_symbol) |
116c20d2 NC |
2713 | (struct bfd_link_info *, bfd *, const char *, flagword, asection *, |
2714 | bfd_vma, const char *, bfd_boolean, bfd_boolean, | |
2715 | struct bfd_link_hash_entry **); | |
e135f41b NC |
2716 | struct external_nlist *syms; |
2717 | bfd_size_type sym_count; | |
2718 | char *strings; | |
b34976b6 | 2719 | bfd_boolean copy; |
e135f41b | 2720 | struct aout_link_hash_entry **sym_hash; |
116c20d2 | 2721 | struct external_nlist *p; |
e135f41b NC |
2722 | struct external_nlist *pend; |
2723 | ||
2724 | syms = obj_aout_external_syms (abfd); | |
2725 | sym_count = obj_aout_external_sym_count (abfd); | |
2726 | strings = obj_aout_external_strings (abfd); | |
2727 | if (info->keep_memory) | |
b34976b6 | 2728 | copy = FALSE; |
e135f41b | 2729 | else |
b34976b6 | 2730 | copy = TRUE; |
e135f41b NC |
2731 | |
2732 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) | |
2733 | { | |
2734 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) | |
2735 | (abfd, info, &syms, &sym_count, &strings))) | |
b34976b6 | 2736 | return FALSE; |
e135f41b NC |
2737 | } |
2738 | ||
2739 | /* We keep a list of the linker hash table entries that correspond | |
2740 | to particular symbols. We could just look them up in the hash | |
2741 | table, but keeping the list is more efficient. Perhaps this | |
2742 | should be conditional on info->keep_memory. */ | |
116c20d2 NC |
2743 | sym_hash = bfd_alloc (abfd, |
2744 | sym_count * sizeof (struct aout_link_hash_entry *)); | |
e135f41b | 2745 | if (sym_hash == NULL && sym_count != 0) |
b34976b6 | 2746 | return FALSE; |
e135f41b NC |
2747 | obj_aout_sym_hashes (abfd) = sym_hash; |
2748 | ||
2749 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; | |
2750 | if (add_one_symbol == NULL) | |
2751 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
2752 | ||
2753 | p = syms; | |
2754 | pend = p + sym_count; | |
2755 | for (; p < pend; p++, sym_hash++) | |
2756 | { | |
2757 | int type; | |
2758 | const char *name; | |
2759 | bfd_vma value; | |
2760 | asection *section; | |
2761 | flagword flags; | |
2762 | const char *string; | |
2763 | ||
2764 | *sym_hash = NULL; | |
2765 | ||
dc810e39 | 2766 | type = H_GET_8 (abfd, p->e_type); |
e135f41b | 2767 | |
e135f41b NC |
2768 | name = strings + GET_WORD (abfd, p->e_strx); |
2769 | value = GET_WORD (abfd, p->e_value); | |
2770 | flags = BSF_GLOBAL; | |
2771 | string = NULL; | |
2772 | switch (type) | |
2773 | { | |
2774 | default: | |
2775 | abort (); | |
2776 | ||
2777 | case N_UNDF: | |
2778 | case N_ABS: | |
2779 | case N_TEXT: | |
2780 | case N_DATA: | |
2781 | case N_BSS: | |
2782 | case N_REG: | |
2783 | case N_FN: | |
2784 | /* Ignore symbols that are not externally visible. */ | |
2785 | continue; | |
2786 | ||
2787 | case N_UNDF | N_EXT: | |
2788 | if (value == 0) | |
2789 | { | |
2790 | section = bfd_und_section_ptr; | |
2791 | flags = 0; | |
2792 | } | |
2793 | else | |
2794 | section = bfd_com_section_ptr; | |
2795 | break; | |
2796 | case N_ABS | N_EXT: | |
2797 | section = bfd_abs_section_ptr; | |
2798 | break; | |
2799 | case N_TEXT | N_EXT: | |
2800 | section = obj_textsec (abfd); | |
2801 | value -= bfd_get_section_vma (abfd, section); | |
2802 | break; | |
2803 | case N_DATA | N_EXT: | |
2804 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
2805 | translate_from_native_sym_flags. */ | |
2806 | section = obj_datasec (abfd); | |
2807 | value -= bfd_get_section_vma (abfd, section); | |
2808 | break; | |
2809 | case N_BSS | N_EXT: | |
2810 | section = obj_bsssec (abfd); | |
2811 | value -= bfd_get_section_vma (abfd, section); | |
2812 | break; | |
2813 | } | |
2814 | ||
2815 | if (! ((*add_one_symbol) | |
b34976b6 | 2816 | (info, abfd, name, flags, section, value, string, copy, FALSE, |
e135f41b | 2817 | (struct bfd_link_hash_entry **) sym_hash))) |
b34976b6 | 2818 | return FALSE; |
e135f41b NC |
2819 | |
2820 | /* Restrict the maximum alignment of a common symbol based on | |
2821 | the architecture, since a.out has no way to represent | |
2822 | alignment requirements of a section in a .o file. FIXME: | |
2823 | This isn't quite right: it should use the architecture of the | |
2824 | output file, not the input files. */ | |
2825 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
2826 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
2827 | bfd_get_arch_info (abfd)->section_align_power)) | |
2828 | (*sym_hash)->root.u.c.p->alignment_power = | |
2829 | bfd_get_arch_info (abfd)->section_align_power; | |
2830 | ||
2831 | /* If this is a set symbol, and we are not building sets, then | |
2832 | it is possible for the hash entry to not have been set. In | |
2833 | such a case, treat the symbol as not globally defined. */ | |
2834 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
2835 | { | |
2836 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
2837 | *sym_hash = NULL; | |
2838 | } | |
2839 | } | |
2840 | ||
b34976b6 | 2841 | return TRUE; |
e135f41b NC |
2842 | } |
2843 | \f | |
116c20d2 | 2844 | /* Look up an entry in an the header file hash table. */ |
e135f41b NC |
2845 | |
2846 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
2847 | ((struct aout_link_includes_entry *) \ | |
2848 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
2849 | ||
e135f41b NC |
2850 | /* The function to create a new entry in the header file hash table. */ |
2851 | ||
2852 | static struct bfd_hash_entry * | |
116c20d2 NC |
2853 | aout_link_includes_newfunc (struct bfd_hash_entry *entry, |
2854 | struct bfd_hash_table *table, | |
2855 | const char *string) | |
e135f41b | 2856 | { |
116c20d2 | 2857 | struct aout_link_includes_entry * ret = |
e135f41b NC |
2858 | (struct aout_link_includes_entry *) entry; |
2859 | ||
2860 | /* Allocate the structure if it has not already been allocated by a | |
2861 | subclass. */ | |
116c20d2 NC |
2862 | if (ret == NULL) |
2863 | ret = bfd_hash_allocate (table, | |
2864 | sizeof (struct aout_link_includes_entry)); | |
2865 | if (ret == NULL) | |
2866 | return NULL; | |
e135f41b NC |
2867 | |
2868 | /* Call the allocation method of the superclass. */ | |
2869 | ret = ((struct aout_link_includes_entry *) | |
2870 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
2871 | if (ret) | |
116c20d2 NC |
2872 | /* Set local fields. */ |
2873 | ret->totals = NULL; | |
e135f41b NC |
2874 | |
2875 | return (struct bfd_hash_entry *) ret; | |
2876 | } | |
2877 | ||
116c20d2 NC |
2878 | static bfd_boolean |
2879 | aout_link_write_other_symbol (struct aout_link_hash_entry *h, void * data) | |
e135f41b | 2880 | { |
116c20d2 NC |
2881 | struct aout_final_link_info *finfo = (struct aout_final_link_info *) data; |
2882 | bfd *output_bfd; | |
2883 | int type; | |
2884 | bfd_vma val; | |
2885 | struct external_nlist outsym; | |
2886 | bfd_size_type indx; | |
2887 | bfd_size_type amt; | |
e135f41b | 2888 | |
116c20d2 NC |
2889 | if (h->root.type == bfd_link_hash_warning) |
2890 | { | |
2891 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
2892 | if (h->root.type == bfd_link_hash_new) | |
2893 | return TRUE; | |
2894 | } | |
e135f41b | 2895 | |
116c20d2 | 2896 | output_bfd = finfo->output_bfd; |
e135f41b | 2897 | |
116c20d2 | 2898 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) |
e135f41b | 2899 | { |
116c20d2 NC |
2900 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) |
2901 | (output_bfd, finfo->info, h))) | |
e135f41b | 2902 | { |
116c20d2 NC |
2903 | /* FIXME: No way to handle errors. */ |
2904 | abort (); | |
e135f41b | 2905 | } |
116c20d2 | 2906 | } |
e135f41b | 2907 | |
116c20d2 NC |
2908 | if (h->written) |
2909 | return TRUE; | |
e135f41b | 2910 | |
116c20d2 | 2911 | h->written = TRUE; |
e135f41b | 2912 | |
116c20d2 NC |
2913 | /* An indx of -2 means the symbol must be written. */ |
2914 | if (h->indx != -2 | |
2915 | && (finfo->info->strip == strip_all | |
2916 | || (finfo->info->strip == strip_some | |
2917 | && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string, | |
2918 | FALSE, FALSE) == NULL))) | |
2919 | return TRUE; | |
e135f41b | 2920 | |
116c20d2 | 2921 | switch (h->root.type) |
e135f41b | 2922 | { |
116c20d2 NC |
2923 | default: |
2924 | abort (); | |
2925 | /* Avoid variable not initialized warnings. */ | |
2926 | return TRUE; | |
2927 | case bfd_link_hash_new: | |
2928 | /* This can happen for set symbols when sets are not being | |
2929 | built. */ | |
2930 | return TRUE; | |
2931 | case bfd_link_hash_undefined: | |
2932 | type = N_UNDF | N_EXT; | |
2933 | val = 0; | |
2934 | break; | |
2935 | case bfd_link_hash_defined: | |
2936 | case bfd_link_hash_defweak: | |
2937 | { | |
2938 | asection *sec; | |
2939 | ||
2940 | sec = h->root.u.def.section->output_section; | |
2941 | BFD_ASSERT (bfd_is_abs_section (sec) | |
2942 | || sec->owner == output_bfd); | |
2943 | if (sec == obj_textsec (output_bfd)) | |
2944 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
2945 | else if (sec == obj_datasec (output_bfd)) | |
2946 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
2947 | else if (sec == obj_bsssec (output_bfd)) | |
2948 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
2949 | else | |
2950 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
2951 | type |= N_EXT; | |
2952 | val = (h->root.u.def.value | |
2953 | + sec->vma | |
2954 | + h->root.u.def.section->output_offset); | |
2955 | } | |
2956 | break; | |
2957 | case bfd_link_hash_common: | |
2958 | type = N_UNDF | N_EXT; | |
2959 | val = h->root.u.c.size; | |
2960 | break; | |
2961 | case bfd_link_hash_undefweak: | |
2962 | type = N_WEAKU; | |
2963 | val = 0; | |
2964 | case bfd_link_hash_indirect: | |
2965 | case bfd_link_hash_warning: | |
2966 | /* FIXME: Ignore these for now. The circumstances under which | |
2967 | they should be written out are not clear to me. */ | |
2968 | return TRUE; | |
e135f41b NC |
2969 | } |
2970 | ||
116c20d2 NC |
2971 | H_PUT_8 (output_bfd, type, outsym.e_type); |
2972 | indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string, | |
2973 | FALSE); | |
2974 | if (indx == (bfd_size_type) -1) | |
2975 | /* FIXME: No way to handle errors. */ | |
2976 | abort (); | |
e135f41b | 2977 | |
116c20d2 NC |
2978 | PUT_WORD (output_bfd, indx, outsym.e_strx); |
2979 | PUT_WORD (output_bfd, val, outsym.e_value); | |
e135f41b | 2980 | |
116c20d2 NC |
2981 | amt = EXTERNAL_NLIST_SIZE; |
2982 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0 | |
2983 | || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt) | |
2984 | /* FIXME: No way to handle errors. */ | |
2985 | abort (); | |
e135f41b | 2986 | |
116c20d2 NC |
2987 | finfo->symoff += amt; |
2988 | h->indx = obj_aout_external_sym_count (output_bfd); | |
2989 | ++obj_aout_external_sym_count (output_bfd); | |
e135f41b | 2990 | |
116c20d2 NC |
2991 | return TRUE; |
2992 | } | |
e135f41b | 2993 | |
116c20d2 | 2994 | /* Handle a link order which is supposed to generate a reloc. */ |
e135f41b | 2995 | |
116c20d2 NC |
2996 | static bfd_boolean |
2997 | aout_link_reloc_link_order (struct aout_final_link_info *finfo, | |
2998 | asection *o, | |
2999 | struct bfd_link_order *p) | |
3000 | { | |
3001 | struct bfd_link_order_reloc *pr; | |
3002 | int r_index; | |
3003 | int r_extern; | |
3004 | reloc_howto_type *howto; | |
3005 | file_ptr *reloff_ptr; | |
3006 | struct reloc_std_external srel; | |
3007 | void * rel_ptr; | |
3008 | bfd_size_type rel_size; | |
e135f41b | 3009 | |
116c20d2 | 3010 | pr = p->u.reloc.p; |
e135f41b | 3011 | |
116c20d2 | 3012 | if (p->type == bfd_section_reloc_link_order) |
e135f41b | 3013 | { |
116c20d2 NC |
3014 | r_extern = 0; |
3015 | if (bfd_is_abs_section (pr->u.section)) | |
3016 | r_index = N_ABS | N_EXT; | |
3017 | else | |
e135f41b | 3018 | { |
116c20d2 NC |
3019 | BFD_ASSERT (pr->u.section->owner == finfo->output_bfd); |
3020 | r_index = pr->u.section->target_index; | |
e135f41b NC |
3021 | } |
3022 | } | |
116c20d2 | 3023 | else |
e135f41b | 3024 | { |
116c20d2 | 3025 | struct aout_link_hash_entry *h; |
e135f41b | 3026 | |
116c20d2 NC |
3027 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); |
3028 | r_extern = 1; | |
3029 | h = ((struct aout_link_hash_entry *) | |
3030 | bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info, | |
3031 | pr->u.name, FALSE, FALSE, TRUE)); | |
3032 | if (h != NULL | |
3033 | && h->indx >= 0) | |
3034 | r_index = h->indx; | |
3035 | else if (h != NULL) | |
3036 | { | |
3037 | /* We decided to strip this symbol, but it turns out that we | |
3038 | can't. Note that we lose the other and desc information | |
3039 | here. I don't think that will ever matter for a global | |
3040 | symbol. */ | |
3041 | h->indx = -2; | |
3042 | h->written = FALSE; | |
3043 | if (! aout_link_write_other_symbol (h, (void *) finfo)) | |
3044 | return FALSE; | |
3045 | r_index = h->indx; | |
e135f41b | 3046 | } |
116c20d2 | 3047 | else |
e135f41b | 3048 | { |
116c20d2 NC |
3049 | if (! ((*finfo->info->callbacks->unattached_reloc) |
3050 | (finfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0))) | |
3051 | return FALSE; | |
3052 | r_index = 0; | |
e135f41b NC |
3053 | } |
3054 | } | |
3055 | ||
116c20d2 NC |
3056 | howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc); |
3057 | if (howto == 0) | |
e135f41b | 3058 | { |
116c20d2 NC |
3059 | bfd_set_error (bfd_error_bad_value); |
3060 | return FALSE; | |
e135f41b NC |
3061 | } |
3062 | ||
116c20d2 NC |
3063 | if (o == obj_textsec (finfo->output_bfd)) |
3064 | reloff_ptr = &finfo->treloff; | |
3065 | else if (o == obj_datasec (finfo->output_bfd)) | |
3066 | reloff_ptr = &finfo->dreloff; | |
3067 | else | |
3068 | abort (); | |
e135f41b | 3069 | |
116c20d2 NC |
3070 | #ifdef MY_put_reloc |
3071 | MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto, | |
3072 | &srel); | |
3073 | #else | |
3074 | { | |
3075 | int r_pcrel; | |
3076 | int r_baserel; | |
3077 | int r_jmptable; | |
3078 | int r_relative; | |
3079 | int r_length; | |
e135f41b | 3080 | |
116c20d2 | 3081 | fprintf (stderr, "TODO: line %d in bfd/pdp11.c\n", __LINE__); |
e135f41b | 3082 | |
116c20d2 NC |
3083 | r_pcrel = howto->pc_relative; |
3084 | r_baserel = (howto->type & 8) != 0; | |
3085 | r_jmptable = (howto->type & 16) != 0; | |
3086 | r_relative = (howto->type & 32) != 0; | |
3087 | r_length = howto->size; | |
e135f41b | 3088 | |
116c20d2 NC |
3089 | PUT_WORD (finfo->output_bfd, p->offset, srel.r_address); |
3090 | if (bfd_header_big_endian (finfo->output_bfd)) | |
3091 | { | |
3092 | srel.r_index[0] = r_index >> 16; | |
3093 | srel.r_index[1] = r_index >> 8; | |
3094 | srel.r_index[2] = r_index; | |
3095 | srel.r_type[0] = | |
3096 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
3097 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
3098 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
3099 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
3100 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
3101 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
3102 | } | |
3103 | else | |
3104 | { | |
3105 | srel.r_index[2] = r_index >> 16; | |
3106 | srel.r_index[1] = r_index >> 8; | |
3107 | srel.r_index[0] = r_index; | |
3108 | srel.r_type[0] = | |
3109 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
3110 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
3111 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
3112 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
3113 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
3114 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
3115 | } | |
3116 | } | |
3117 | #endif | |
3118 | rel_ptr = (void *) &srel; | |
e135f41b | 3119 | |
116c20d2 NC |
3120 | /* We have to write the addend into the object file, since |
3121 | standard a.out relocs are in place. It would be more | |
3122 | reliable if we had the current contents of the file here, | |
3123 | rather than assuming zeroes, but we can't read the file since | |
3124 | it was opened using bfd_openw. */ | |
3125 | if (pr->addend != 0) | |
e135f41b | 3126 | { |
116c20d2 NC |
3127 | bfd_size_type size; |
3128 | bfd_reloc_status_type r; | |
3129 | bfd_byte *buf; | |
3130 | bfd_boolean ok; | |
3131 | ||
3132 | size = bfd_get_reloc_size (howto); | |
3133 | buf = bfd_zmalloc (size); | |
3134 | if (buf == NULL) | |
3135 | return FALSE; | |
3136 | r = MY_relocate_contents (howto, finfo->output_bfd, | |
3137 | pr->addend, buf); | |
3138 | switch (r) | |
3139 | { | |
3140 | case bfd_reloc_ok: | |
3141 | break; | |
3142 | default: | |
3143 | case bfd_reloc_outofrange: | |
3144 | abort (); | |
3145 | case bfd_reloc_overflow: | |
3146 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
3147 | (finfo->info, NULL, | |
3148 | (p->type == bfd_section_reloc_link_order | |
3149 | ? bfd_section_name (finfo->output_bfd, | |
3150 | pr->u.section) | |
3151 | : pr->u.name), | |
3152 | howto->name, pr->addend, NULL, | |
3153 | (asection *) NULL, (bfd_vma) 0))) | |
3154 | { | |
3155 | free (buf); | |
3156 | return FALSE; | |
3157 | } | |
3158 | break; | |
3159 | } | |
3160 | ok = bfd_set_section_contents (finfo->output_bfd, o, | |
3161 | (void *) buf, | |
3162 | (file_ptr) p->offset, | |
3163 | size); | |
3164 | free (buf); | |
3165 | if (! ok) | |
3166 | return FALSE; | |
e135f41b NC |
3167 | } |
3168 | ||
116c20d2 NC |
3169 | rel_size = obj_reloc_entry_size (finfo->output_bfd); |
3170 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
3171 | || bfd_bwrite (rel_ptr, rel_size, finfo->output_bfd) != rel_size) | |
b34976b6 | 3172 | return FALSE; |
e135f41b | 3173 | |
116c20d2 | 3174 | *reloff_ptr += rel_size; |
e135f41b | 3175 | |
116c20d2 NC |
3176 | /* Assert that the relocs have not run into the symbols, and that n |
3177 | the text relocs have not run into the data relocs. */ | |
3178 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
3179 | && (reloff_ptr != &finfo->treloff | |
3180 | || (*reloff_ptr | |
3181 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
e135f41b | 3182 | |
116c20d2 NC |
3183 | return TRUE; |
3184 | } | |
e135f41b | 3185 | |
116c20d2 NC |
3186 | /* Get the section corresponding to a reloc index. */ |
3187 | ||
3188 | static inline asection * | |
3189 | aout_reloc_type_to_section (bfd *abfd, int type) | |
3190 | { | |
3191 | switch (type) | |
e135f41b | 3192 | { |
116c20d2 NC |
3193 | case RTEXT: return obj_textsec (abfd); |
3194 | case RDATA: return obj_datasec (abfd); | |
3195 | case RBSS: return obj_bsssec (abfd); | |
3196 | case RABS: return bfd_abs_section_ptr; | |
3197 | case REXT: return bfd_und_section_ptr; | |
3198 | default: abort (); | |
e135f41b | 3199 | } |
e135f41b NC |
3200 | } |
3201 | ||
b34976b6 | 3202 | static bfd_boolean |
116c20d2 NC |
3203 | pdp11_aout_link_input_section (struct aout_final_link_info *finfo, |
3204 | bfd *input_bfd, | |
3205 | asection *input_section, | |
3206 | bfd_byte *relocs, | |
3207 | bfd_size_type rel_size, | |
3208 | bfd_byte *contents) | |
e135f41b | 3209 | { |
116c20d2 NC |
3210 | bfd_boolean (*check_dynamic_reloc) |
3211 | (struct bfd_link_info *, bfd *, asection *, | |
3212 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
3213 | bfd_vma *); | |
e135f41b | 3214 | bfd *output_bfd; |
116c20d2 NC |
3215 | bfd_boolean relocatable; |
3216 | struct external_nlist *syms; | |
e135f41b | 3217 | char *strings; |
116c20d2 | 3218 | struct aout_link_hash_entry **sym_hashes; |
e135f41b | 3219 | int *symbol_map; |
116c20d2 NC |
3220 | bfd_size_type reloc_count; |
3221 | bfd_byte *rel; | |
3222 | bfd_byte *rel_end; | |
e135f41b NC |
3223 | |
3224 | output_bfd = finfo->output_bfd; | |
116c20d2 | 3225 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
e135f41b | 3226 | |
116c20d2 NC |
3227 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_SIZE); |
3228 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
3229 | == output_bfd->xvec->header_byteorder); | |
e135f41b | 3230 | |
116c20d2 NC |
3231 | relocatable = finfo->info->relocatable; |
3232 | syms = obj_aout_external_syms (input_bfd); | |
3233 | strings = obj_aout_external_strings (input_bfd); | |
3234 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
e135f41b | 3235 | symbol_map = finfo->symbol_map; |
116c20d2 NC |
3236 | |
3237 | reloc_count = rel_size / RELOC_SIZE; | |
3238 | rel = relocs; | |
3239 | rel_end = rel + rel_size; | |
3240 | for (; rel < rel_end; rel += RELOC_SIZE) | |
e135f41b | 3241 | { |
116c20d2 NC |
3242 | bfd_vma r_addr; |
3243 | int r_index; | |
3244 | int r_type; | |
3245 | int r_pcrel; | |
3246 | int r_extern; | |
3247 | reloc_howto_type *howto; | |
3248 | struct aout_link_hash_entry *h = NULL; | |
3249 | bfd_vma relocation; | |
3250 | bfd_reloc_status_type r; | |
3251 | int reloc_entry; | |
e135f41b | 3252 | |
116c20d2 NC |
3253 | reloc_entry = GET_WORD (input_bfd, (void *) rel); |
3254 | if (reloc_entry == 0) | |
e135f41b NC |
3255 | continue; |
3256 | ||
116c20d2 NC |
3257 | { |
3258 | unsigned int howto_idx; | |
e135f41b | 3259 | |
116c20d2 NC |
3260 | r_index = (reloc_entry & RIDXMASK) >> 4; |
3261 | r_type = reloc_entry & RTYPE; | |
3262 | r_pcrel = reloc_entry & RELFLG; | |
3263 | r_addr = (char *) rel - (char *) relocs; | |
e135f41b | 3264 | |
116c20d2 | 3265 | r_extern = (r_type == REXT); |
e135f41b | 3266 | |
116c20d2 NC |
3267 | howto_idx = r_pcrel; |
3268 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_pdp11)); | |
3269 | howto = howto_table_pdp11 + howto_idx; | |
3270 | } | |
3271 | ||
3272 | if (relocatable) | |
e135f41b | 3273 | { |
116c20d2 NC |
3274 | /* We are generating a relocatable output file, and must |
3275 | modify the reloc accordingly. */ | |
3276 | if (r_extern) | |
3277 | { | |
3278 | /* If we know the symbol this relocation is against, | |
3279 | convert it into a relocation against a section. This | |
3280 | is what the native linker does. */ | |
3281 | h = sym_hashes[r_index]; | |
3282 | if (h != NULL | |
3283 | && (h->root.type == bfd_link_hash_defined | |
3284 | || h->root.type == bfd_link_hash_defweak)) | |
3285 | { | |
3286 | asection *output_section; | |
e135f41b | 3287 | |
116c20d2 NC |
3288 | /* Compute a new r_index. */ |
3289 | output_section = h->root.u.def.section->output_section; | |
e135f41b | 3290 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 | 3291 | r_type = N_TEXT; |
e135f41b | 3292 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 | 3293 | r_type = N_DATA; |
e135f41b | 3294 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 | 3295 | r_type = N_BSS; |
e135f41b | 3296 | else |
116c20d2 | 3297 | r_type = N_ABS; |
e135f41b | 3298 | |
116c20d2 NC |
3299 | /* Add the symbol value and the section VMA to the |
3300 | addend stored in the contents. */ | |
3301 | relocation = (h->root.u.def.value | |
3302 | + output_section->vma | |
3303 | + h->root.u.def.section->output_offset); | |
e135f41b | 3304 | } |
116c20d2 | 3305 | else |
e135f41b | 3306 | { |
116c20d2 NC |
3307 | /* We must change r_index according to the symbol |
3308 | map. */ | |
3309 | r_index = symbol_map[r_index]; | |
e135f41b | 3310 | |
116c20d2 | 3311 | if (r_index == -1) |
e135f41b | 3312 | { |
116c20d2 | 3313 | if (h != NULL) |
e135f41b | 3314 | { |
116c20d2 NC |
3315 | /* We decided to strip this symbol, but it |
3316 | turns out that we can't. Note that we | |
3317 | lose the other and desc information here. | |
3318 | I don't think that will ever matter for a | |
3319 | global symbol. */ | |
3320 | if (h->indx < 0) | |
e135f41b | 3321 | { |
116c20d2 NC |
3322 | h->indx = -2; |
3323 | h->written = FALSE; | |
3324 | if (! aout_link_write_other_symbol (h, | |
3325 | (void *) finfo)) | |
3326 | return FALSE; | |
e135f41b | 3327 | } |
116c20d2 NC |
3328 | r_index = h->indx; |
3329 | } | |
3330 | else | |
3331 | { | |
3332 | const char *name; | |
3333 | ||
3334 | name = strings + GET_WORD (input_bfd, | |
3335 | syms[r_index].e_strx); | |
3336 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
3337 | (finfo->info, name, input_bfd, input_section, | |
3338 | r_addr))) | |
3339 | return FALSE; | |
3340 | r_index = 0; | |
e135f41b NC |
3341 | } |
3342 | } | |
116c20d2 NC |
3343 | |
3344 | relocation = 0; | |
e135f41b NC |
3345 | } |
3346 | ||
116c20d2 NC |
3347 | /* Write out the new r_index value. */ |
3348 | reloc_entry = GET_WORD (input_bfd, rel); | |
3349 | reloc_entry &= RIDXMASK; | |
3350 | reloc_entry |= r_index << 4; | |
3351 | PUT_WORD (input_bfd, reloc_entry, rel); | |
3352 | } | |
3353 | else | |
3354 | { | |
3355 | asection *section; | |
3356 | ||
3357 | /* This is a relocation against a section. We must | |
3358 | adjust by the amount that the section moved. */ | |
3359 | section = aout_reloc_type_to_section (input_bfd, r_type); | |
3360 | relocation = (section->output_section->vma | |
3361 | + section->output_offset | |
3362 | - section->vma); | |
3363 | } | |
3364 | ||
3365 | /* Change the address of the relocation. */ | |
3366 | fprintf (stderr, "TODO: change the address of the relocation\n"); | |
3367 | ||
3368 | /* Adjust a PC relative relocation by removing the reference | |
3369 | to the original address in the section and including the | |
3370 | reference to the new address. */ | |
3371 | if (r_pcrel) | |
3372 | relocation -= (input_section->output_section->vma | |
3373 | + input_section->output_offset | |
3374 | - input_section->vma); | |
3375 | ||
3376 | #ifdef MY_relocatable_reloc | |
3377 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
3378 | #endif | |
3379 | ||
3380 | if (relocation == 0) | |
3381 | r = bfd_reloc_ok; | |
3382 | else | |
3383 | r = MY_relocate_contents (howto, | |
3384 | input_bfd, relocation, | |
3385 | contents + r_addr); | |
3386 | } | |
3387 | else | |
3388 | { | |
3389 | bfd_boolean hundef; | |
3390 | ||
3391 | /* We are generating an executable, and must do a full | |
3392 | relocation. */ | |
3393 | hundef = FALSE; | |
3394 | if (r_extern) | |
3395 | { | |
3396 | h = sym_hashes[r_index]; | |
3397 | ||
3398 | if (h != NULL | |
3399 | && (h->root.type == bfd_link_hash_defined | |
3400 | || h->root.type == bfd_link_hash_defweak)) | |
e135f41b | 3401 | { |
116c20d2 NC |
3402 | relocation = (h->root.u.def.value |
3403 | + h->root.u.def.section->output_section->vma | |
3404 | + h->root.u.def.section->output_offset); | |
e135f41b | 3405 | } |
116c20d2 NC |
3406 | else if (h != NULL |
3407 | && h->root.type == bfd_link_hash_undefweak) | |
3408 | relocation = 0; | |
e135f41b NC |
3409 | else |
3410 | { | |
116c20d2 NC |
3411 | hundef = TRUE; |
3412 | relocation = 0; | |
3413 | } | |
3414 | } | |
3415 | else | |
3416 | { | |
3417 | asection *section; | |
e135f41b | 3418 | |
116c20d2 NC |
3419 | section = aout_reloc_type_to_section (input_bfd, r_type); |
3420 | relocation = (section->output_section->vma | |
3421 | + section->output_offset | |
3422 | - section->vma); | |
3423 | if (r_pcrel) | |
3424 | relocation += input_section->vma; | |
3425 | } | |
e135f41b | 3426 | |
116c20d2 NC |
3427 | if (check_dynamic_reloc != NULL) |
3428 | { | |
3429 | bfd_boolean skip; | |
e135f41b | 3430 | |
116c20d2 NC |
3431 | if (! ((*check_dynamic_reloc) |
3432 | (finfo->info, input_bfd, input_section, h, | |
3433 | (void *) rel, contents, &skip, &relocation))) | |
3434 | return FALSE; | |
3435 | if (skip) | |
3436 | continue; | |
3437 | } | |
3438 | ||
3439 | /* Now warn if a global symbol is undefined. We could not | |
3440 | do this earlier, because check_dynamic_reloc might want | |
3441 | to skip this reloc. */ | |
3442 | if (hundef && ! finfo->info->shared) | |
3443 | { | |
3444 | const char *name; | |
3445 | ||
3446 | if (h != NULL) | |
3447 | name = h->root.root.string; | |
3448 | else | |
3449 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
3450 | if (! ((*finfo->info->callbacks->undefined_symbol) | |
3451 | (finfo->info, name, input_bfd, input_section, | |
3452 | r_addr, TRUE))) | |
3453 | return FALSE; | |
e135f41b | 3454 | } |
116c20d2 NC |
3455 | |
3456 | r = MY_final_link_relocate (howto, | |
3457 | input_bfd, input_section, | |
3458 | contents, r_addr, relocation, | |
3459 | (bfd_vma) 0); | |
e135f41b NC |
3460 | } |
3461 | ||
116c20d2 | 3462 | if (r != bfd_reloc_ok) |
e135f41b | 3463 | { |
116c20d2 NC |
3464 | switch (r) |
3465 | { | |
3466 | default: | |
3467 | case bfd_reloc_outofrange: | |
3468 | abort (); | |
3469 | case bfd_reloc_overflow: | |
3470 | { | |
3471 | const char *name; | |
3472 | ||
3473 | if (h != NULL) | |
3474 | name = NULL; | |
3475 | else if (r_extern) | |
3476 | name = strings + GET_WORD (input_bfd, | |
3477 | syms[r_index].e_strx); | |
3478 | else | |
3479 | { | |
3480 | asection *s; | |
3481 | ||
3482 | s = aout_reloc_type_to_section (input_bfd, r_type); | |
3483 | name = bfd_section_name (input_bfd, s); | |
3484 | } | |
3485 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
3486 | (finfo->info, (h ? &h->root : NULL), name, | |
3487 | howto->name, (bfd_vma) 0, input_bfd, | |
3488 | input_section, r_addr))) | |
3489 | return FALSE; | |
3490 | } | |
3491 | break; | |
3492 | } | |
e135f41b | 3493 | } |
e135f41b NC |
3494 | } |
3495 | ||
116c20d2 NC |
3496 | return TRUE; |
3497 | } | |
3498 | ||
3499 | /* Link an a.out section into the output file. */ | |
3500 | ||
3501 | static bfd_boolean | |
3502 | aout_link_input_section (struct aout_final_link_info *finfo, | |
3503 | bfd *input_bfd, | |
3504 | asection *input_section, | |
3505 | file_ptr *reloff_ptr, | |
3506 | bfd_size_type rel_size) | |
3507 | { | |
3508 | bfd_size_type input_size; | |
3509 | void * relocs; | |
3510 | ||
3511 | /* Get the section contents. */ | |
3512 | input_size = input_section->size; | |
3513 | if (! bfd_get_section_contents (input_bfd, input_section, | |
3514 | (void *) finfo->contents, | |
3515 | (file_ptr) 0, input_size)) | |
3516 | return FALSE; | |
3517 | ||
3518 | /* Read in the relocs if we haven't already done it. */ | |
3519 | if (aout_section_data (input_section) != NULL | |
3520 | && aout_section_data (input_section)->relocs != NULL) | |
3521 | relocs = aout_section_data (input_section)->relocs; | |
3522 | else | |
e135f41b | 3523 | { |
116c20d2 NC |
3524 | relocs = finfo->relocs; |
3525 | if (rel_size > 0) | |
3526 | { | |
3527 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
3528 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) | |
3529 | return FALSE; | |
3530 | } | |
3531 | } | |
e135f41b | 3532 | |
116c20d2 NC |
3533 | /* Relocate the section contents. */ |
3534 | if (! pdp11_aout_link_input_section (finfo, input_bfd, input_section, | |
3535 | (bfd_byte *) relocs, | |
3536 | rel_size, finfo->contents)) | |
3537 | return FALSE; | |
3538 | ||
3539 | /* Write out the section contents. */ | |
3540 | if (! bfd_set_section_contents (finfo->output_bfd, | |
3541 | input_section->output_section, | |
3542 | (void *) finfo->contents, | |
3543 | (file_ptr) input_section->output_offset, | |
3544 | input_size)) | |
3545 | return FALSE; | |
3546 | ||
3547 | /* If we are producing relocatable output, the relocs were | |
3548 | modified, and we now write them out. */ | |
3549 | if (finfo->info->relocatable && rel_size > 0) | |
3550 | { | |
3551 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) | |
3552 | return FALSE; | |
3553 | if (bfd_bwrite (relocs, rel_size, finfo->output_bfd) != rel_size) | |
3554 | return FALSE; | |
3555 | *reloff_ptr += rel_size; | |
3556 | ||
3557 | /* Assert that the relocs have not run into the symbols, and | |
3558 | that if these are the text relocs they have not run into the | |
3559 | data relocs. */ | |
3560 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
3561 | && (reloff_ptr != &finfo->treloff | |
3562 | || (*reloff_ptr | |
3563 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
3564 | } | |
3565 | ||
3566 | return TRUE; | |
3567 | } | |
3568 | ||
3569 | /* Link an a.out input BFD into the output file. */ | |
3570 | ||
3571 | static bfd_boolean | |
3572 | aout_link_input_bfd (struct aout_final_link_info *finfo, bfd *input_bfd) | |
3573 | { | |
3574 | bfd_size_type sym_count; | |
3575 | ||
3576 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); | |
3577 | ||
3578 | /* If this is a dynamic object, it may need special handling. */ | |
3579 | if ((input_bfd->flags & DYNAMIC) != 0 | |
3580 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
3581 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
3582 | (finfo->info, input_bfd)); | |
3583 | ||
3584 | /* Get the symbols. We probably have them already, unless | |
3585 | finfo->info->keep_memory is FALSE. */ | |
3586 | if (! aout_get_external_symbols (input_bfd)) | |
3587 | return FALSE; | |
3588 | ||
3589 | sym_count = obj_aout_external_sym_count (input_bfd); | |
3590 | ||
3591 | /* Write out the symbols and get a map of the new indices. The map | |
3592 | is placed into finfo->symbol_map. */ | |
3593 | if (! aout_link_write_symbols (finfo, input_bfd)) | |
3594 | return FALSE; | |
3595 | ||
3596 | /* Relocate and write out the sections. These functions use the | |
3597 | symbol map created by aout_link_write_symbols. The linker_mark | |
3598 | field will be set if these sections are to be included in the | |
3599 | link, which will normally be the case. */ | |
3600 | if (obj_textsec (input_bfd)->linker_mark) | |
3601 | { | |
3602 | if (! aout_link_input_section (finfo, input_bfd, | |
3603 | obj_textsec (input_bfd), | |
3604 | &finfo->treloff, | |
3605 | exec_hdr (input_bfd)->a_trsize)) | |
3606 | return FALSE; | |
3607 | } | |
3608 | if (obj_datasec (input_bfd)->linker_mark) | |
3609 | { | |
3610 | if (! aout_link_input_section (finfo, input_bfd, | |
3611 | obj_datasec (input_bfd), | |
3612 | &finfo->dreloff, | |
3613 | exec_hdr (input_bfd)->a_drsize)) | |
b34976b6 | 3614 | return FALSE; |
116c20d2 NC |
3615 | } |
3616 | ||
3617 | /* If we are not keeping memory, we don't need the symbols any | |
3618 | longer. We still need them if we are keeping memory, because the | |
3619 | strings in the hash table point into them. */ | |
3620 | if (! finfo->info->keep_memory) | |
3621 | { | |
3622 | if (! aout_link_free_symbols (input_bfd)) | |
b34976b6 | 3623 | return FALSE; |
e135f41b NC |
3624 | } |
3625 | ||
b34976b6 | 3626 | return TRUE; |
e135f41b NC |
3627 | } |
3628 | ||
116c20d2 NC |
3629 | /* Do the final link step. This is called on the output BFD. The |
3630 | INFO structure should point to a list of BFDs linked through the | |
3631 | link_next field which can be used to find each BFD which takes part | |
3632 | in the output. Also, each section in ABFD should point to a list | |
3633 | of bfd_link_order structures which list all the input sections for | |
3634 | the output section. */ | |
e135f41b | 3635 | |
116c20d2 NC |
3636 | bfd_boolean |
3637 | NAME (aout, final_link) (bfd *abfd, | |
3638 | struct bfd_link_info *info, | |
3639 | void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *)) | |
e135f41b | 3640 | { |
116c20d2 NC |
3641 | struct aout_final_link_info aout_info; |
3642 | bfd_boolean includes_hash_initialized = FALSE; | |
3643 | bfd *sub; | |
3644 | bfd_size_type trsize, drsize; | |
3645 | bfd_size_type max_contents_size; | |
3646 | bfd_size_type max_relocs_size; | |
3647 | bfd_size_type max_sym_count; | |
3648 | bfd_size_type text_size; | |
3649 | file_ptr text_end; | |
3650 | struct bfd_link_order *p; | |
3651 | asection *o; | |
3652 | bfd_boolean have_link_order_relocs; | |
e135f41b | 3653 | |
116c20d2 NC |
3654 | if (info->shared) |
3655 | abfd->flags |= DYNAMIC; | |
e92d460e | 3656 | |
116c20d2 NC |
3657 | aout_info.info = info; |
3658 | aout_info.output_bfd = abfd; | |
3659 | aout_info.contents = NULL; | |
3660 | aout_info.relocs = NULL; | |
3661 | aout_info.symbol_map = NULL; | |
3662 | aout_info.output_syms = NULL; | |
e135f41b | 3663 | |
66eb6687 AM |
3664 | if (!bfd_hash_table_init_n (&aout_info.includes.root, |
3665 | aout_link_includes_newfunc, | |
3666 | sizeof (struct aout_link_includes_entry), | |
3667 | 251)) | |
116c20d2 NC |
3668 | goto error_return; |
3669 | includes_hash_initialized = TRUE; | |
3670 | ||
3671 | /* Figure out the largest section size. Also, if generating | |
3672 | relocatable output, count the relocs. */ | |
3673 | trsize = 0; | |
3674 | drsize = 0; | |
3675 | max_contents_size = 0; | |
3676 | max_relocs_size = 0; | |
3677 | max_sym_count = 0; | |
3678 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
e135f41b | 3679 | { |
116c20d2 NC |
3680 | size_t sz; |
3681 | ||
3682 | if (info->relocatable) | |
e135f41b | 3683 | { |
116c20d2 NC |
3684 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3685 | { | |
3686 | trsize += exec_hdr (sub)->a_trsize; | |
3687 | drsize += exec_hdr (sub)->a_drsize; | |
3688 | } | |
3689 | else | |
3690 | { | |
3691 | /* FIXME: We need to identify the .text and .data sections | |
3692 | and call get_reloc_upper_bound and canonicalize_reloc to | |
3693 | work out the number of relocs needed, and then multiply | |
3694 | by the reloc size. */ | |
3695 | (*_bfd_error_handler) | |
3696 | ("%s: relocatable link from %s to %s not supported", | |
3697 | bfd_get_filename (abfd), | |
3698 | sub->xvec->name, abfd->xvec->name); | |
3699 | bfd_set_error (bfd_error_invalid_operation); | |
3700 | goto error_return; | |
3701 | } | |
e135f41b | 3702 | } |
e135f41b | 3703 | |
116c20d2 NC |
3704 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3705 | { | |
3706 | sz = obj_textsec (sub)->size; | |
3707 | if (sz > max_contents_size) | |
3708 | max_contents_size = sz; | |
3709 | sz = obj_datasec (sub)->size; | |
3710 | if (sz > max_contents_size) | |
3711 | max_contents_size = sz; | |
e135f41b | 3712 | |
116c20d2 NC |
3713 | sz = exec_hdr (sub)->a_trsize; |
3714 | if (sz > max_relocs_size) | |
3715 | max_relocs_size = sz; | |
3716 | sz = exec_hdr (sub)->a_drsize; | |
3717 | if (sz > max_relocs_size) | |
3718 | max_relocs_size = sz; | |
e135f41b | 3719 | |
116c20d2 NC |
3720 | sz = obj_aout_external_sym_count (sub); |
3721 | if (sz > max_sym_count) | |
3722 | max_sym_count = sz; | |
3723 | } | |
e135f41b NC |
3724 | } |
3725 | ||
116c20d2 | 3726 | if (info->relocatable) |
e135f41b | 3727 | { |
116c20d2 NC |
3728 | if (obj_textsec (abfd) != NULL) |
3729 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
8423293d | 3730 | ->map_head.link_order) |
116c20d2 NC |
3731 | * obj_reloc_entry_size (abfd)); |
3732 | if (obj_datasec (abfd) != NULL) | |
3733 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
8423293d | 3734 | ->map_head.link_order) |
116c20d2 | 3735 | * obj_reloc_entry_size (abfd)); |
e135f41b | 3736 | } |
e135f41b | 3737 | |
116c20d2 NC |
3738 | exec_hdr (abfd)->a_trsize = trsize; |
3739 | exec_hdr (abfd)->a_drsize = drsize; | |
3740 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); | |
3741 | ||
3742 | /* Adjust the section sizes and vmas according to the magic number. | |
3743 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
3744 | filepos for each section. */ | |
3745 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
3746 | goto error_return; | |
3747 | ||
3748 | /* The relocation and symbol file positions differ among a.out | |
3749 | targets. We are passed a callback routine from the backend | |
3750 | specific code to handle this. | |
3751 | FIXME: At this point we do not know how much space the symbol | |
3752 | table will require. This will not work for any (nonstandard) | |
3753 | a.out target that needs to know the symbol table size before it | |
3754 | can compute the relocation file positions. This may or may not | |
3755 | be the case for the hp300hpux target, for example. */ | |
3756 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, | |
3757 | &aout_info.symoff); | |
3758 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
3759 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
3760 | obj_sym_filepos (abfd) = aout_info.symoff; | |
3761 | ||
3762 | /* We keep a count of the symbols as we output them. */ | |
3763 | obj_aout_external_sym_count (abfd) = 0; | |
3764 | ||
3765 | /* We accumulate the string table as we write out the symbols. */ | |
3766 | aout_info.strtab = _bfd_stringtab_init (); | |
3767 | if (aout_info.strtab == NULL) | |
3768 | goto error_return; | |
3769 | ||
3770 | /* Allocate buffers to hold section contents and relocs. */ | |
3771 | aout_info.contents = bfd_malloc (max_contents_size); | |
3772 | aout_info.relocs = bfd_malloc (max_relocs_size); | |
3773 | aout_info.symbol_map = bfd_malloc (max_sym_count * sizeof (int *)); | |
3774 | aout_info.output_syms = bfd_malloc ((max_sym_count + 1) | |
3775 | * sizeof (struct external_nlist)); | |
3776 | if ((aout_info.contents == NULL && max_contents_size != 0) | |
3777 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
3778 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
3779 | || aout_info.output_syms == NULL) | |
3780 | goto error_return; | |
3781 | ||
3782 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
3783 | required by SunOS. Doing this here rather than in sunos.c is a | |
3784 | hack, but it's easier than exporting everything which would be | |
3785 | needed. */ | |
3786 | { | |
3787 | struct aout_link_hash_entry *h; | |
3788 | ||
3789 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
3790 | FALSE, FALSE, FALSE); | |
3791 | if (h != NULL) | |
3792 | aout_link_write_other_symbol (h, &aout_info); | |
3793 | } | |
3794 | ||
3795 | /* The most time efficient way to do the link would be to read all | |
3796 | the input object files into memory and then sort out the | |
3797 | information into the output file. Unfortunately, that will | |
3798 | probably use too much memory. Another method would be to step | |
3799 | through everything that composes the text section and write it | |
3800 | out, and then everything that composes the data section and write | |
3801 | it out, and then write out the relocs, and then write out the | |
3802 | symbols. Unfortunately, that requires reading stuff from each | |
3803 | input file several times, and we will not be able to keep all the | |
3804 | input files open simultaneously, and reopening them will be slow. | |
3805 | ||
3806 | What we do is basically process one input file at a time. We do | |
3807 | everything we need to do with an input file once--copy over the | |
3808 | section contents, handle the relocation information, and write | |
3809 | out the symbols--and then we throw away the information we read | |
3810 | from it. This approach requires a lot of lseeks of the output | |
3811 | file, which is unfortunate but still faster than reopening a lot | |
3812 | of files. | |
3813 | ||
3814 | We use the output_has_begun field of the input BFDs to see | |
3815 | whether we have already handled it. */ | |
3816 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
3817 | sub->output_has_begun = FALSE; | |
3818 | ||
3819 | /* Mark all sections which are to be included in the link. This | |
3820 | will normally be every section. We need to do this so that we | |
3821 | can identify any sections which the linker has decided to not | |
3822 | include. */ | |
3823 | for (o = abfd->sections; o != NULL; o = o->next) | |
e135f41b | 3824 | { |
8423293d | 3825 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
116c20d2 NC |
3826 | if (p->type == bfd_indirect_link_order) |
3827 | p->u.indirect.section->linker_mark = TRUE; | |
e135f41b NC |
3828 | } |
3829 | ||
116c20d2 NC |
3830 | have_link_order_relocs = FALSE; |
3831 | for (o = abfd->sections; o != NULL; o = o->next) | |
3832 | { | |
8423293d | 3833 | for (p = o->map_head.link_order; |
116c20d2 NC |
3834 | p != NULL; |
3835 | p = p->next) | |
3836 | { | |
3837 | if (p->type == bfd_indirect_link_order | |
3838 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
3839 | == bfd_target_aout_flavour)) | |
3840 | { | |
3841 | bfd *input_bfd; | |
e135f41b | 3842 | |
116c20d2 NC |
3843 | input_bfd = p->u.indirect.section->owner; |
3844 | if (! input_bfd->output_has_begun) | |
3845 | { | |
3846 | if (! aout_link_input_bfd (&aout_info, input_bfd)) | |
3847 | goto error_return; | |
3848 | input_bfd->output_has_begun = TRUE; | |
3849 | } | |
3850 | } | |
3851 | else if (p->type == bfd_section_reloc_link_order | |
3852 | || p->type == bfd_symbol_reloc_link_order) | |
3853 | /* These are handled below. */ | |
3854 | have_link_order_relocs = TRUE; | |
3855 | else | |
3856 | { | |
3857 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
3858 | goto error_return; | |
3859 | } | |
3860 | } | |
3861 | } | |
e135f41b | 3862 | |
116c20d2 NC |
3863 | /* Write out any symbols that we have not already written out. */ |
3864 | aout_link_hash_traverse (aout_hash_table (info), | |
3865 | aout_link_write_other_symbol, | |
3866 | (void *) &aout_info); | |
e135f41b | 3867 | |
116c20d2 NC |
3868 | /* Now handle any relocs we were asked to create by the linker. |
3869 | These did not come from any input file. We must do these after | |
3870 | we have written out all the symbols, so that we know the symbol | |
3871 | indices to use. */ | |
3872 | if (have_link_order_relocs) | |
e135f41b | 3873 | { |
116c20d2 | 3874 | for (o = abfd->sections; o != NULL; o = o->next) |
e135f41b | 3875 | { |
8423293d | 3876 | for (p = o->map_head.link_order; |
116c20d2 NC |
3877 | p != NULL; |
3878 | p = p->next) | |
3879 | { | |
3880 | if (p->type == bfd_section_reloc_link_order | |
3881 | || p->type == bfd_symbol_reloc_link_order) | |
3882 | { | |
3883 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
3884 | goto error_return; | |
3885 | } | |
3886 | } | |
e135f41b NC |
3887 | } |
3888 | } | |
3889 | ||
116c20d2 NC |
3890 | if (aout_info.contents != NULL) |
3891 | { | |
3892 | free (aout_info.contents); | |
3893 | aout_info.contents = NULL; | |
3894 | } | |
3895 | if (aout_info.relocs != NULL) | |
3896 | { | |
3897 | free (aout_info.relocs); | |
3898 | aout_info.relocs = NULL; | |
3899 | } | |
3900 | if (aout_info.symbol_map != NULL) | |
3901 | { | |
3902 | free (aout_info.symbol_map); | |
3903 | aout_info.symbol_map = NULL; | |
3904 | } | |
3905 | if (aout_info.output_syms != NULL) | |
3906 | { | |
3907 | free (aout_info.output_syms); | |
3908 | aout_info.output_syms = NULL; | |
3909 | } | |
3910 | if (includes_hash_initialized) | |
3911 | { | |
3912 | bfd_hash_table_free (&aout_info.includes.root); | |
3913 | includes_hash_initialized = FALSE; | |
3914 | } | |
e135f41b | 3915 | |
116c20d2 NC |
3916 | /* Finish up any dynamic linking we may be doing. */ |
3917 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
3918 | { | |
3919 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
3920 | goto error_return; | |
3921 | } | |
e135f41b | 3922 | |
116c20d2 NC |
3923 | /* Update the header information. */ |
3924 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
3925 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
3926 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
3927 | obj_textsec (abfd)->reloc_count = | |
3928 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
3929 | obj_datasec (abfd)->reloc_count = | |
3930 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
3931 | ||
3932 | /* Write out the string table, unless there are no symbols. */ | |
3933 | if (abfd->symcount > 0) | |
e135f41b | 3934 | { |
116c20d2 NC |
3935 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 |
3936 | || ! emit_stringtab (abfd, aout_info.strtab)) | |
3937 | goto error_return; | |
3938 | } | |
3939 | else if (obj_textsec (abfd)->reloc_count == 0 | |
3940 | && obj_datasec (abfd)->reloc_count == 0) | |
3941 | { | |
3942 | bfd_byte b; | |
e135f41b | 3943 | |
116c20d2 NC |
3944 | b = 0; |
3945 | if (bfd_seek (abfd, | |
3946 | (file_ptr) (obj_datasec (abfd)->filepos | |
3947 | + exec_hdr (abfd)->a_data | |
3948 | - 1), | |
3949 | SEEK_SET) != 0 | |
3950 | || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1) | |
3951 | goto error_return; | |
e135f41b NC |
3952 | } |
3953 | ||
b34976b6 | 3954 | return TRUE; |
e135f41b | 3955 | |
116c20d2 NC |
3956 | error_return: |
3957 | if (aout_info.contents != NULL) | |
3958 | free (aout_info.contents); | |
3959 | if (aout_info.relocs != NULL) | |
3960 | free (aout_info.relocs); | |
3961 | if (aout_info.symbol_map != NULL) | |
3962 | free (aout_info.symbol_map); | |
3963 | if (aout_info.output_syms != NULL) | |
3964 | free (aout_info.output_syms); | |
3965 | if (includes_hash_initialized) | |
3966 | bfd_hash_table_free (&aout_info.includes.root); | |
3967 | return FALSE; | |
e135f41b NC |
3968 | } |
3969 | ||
116c20d2 NC |
3970 | /* Adjust and write out the symbols for an a.out file. Set the new |
3971 | symbol indices into a symbol_map. */ | |
3972 | ||
b34976b6 | 3973 | static bfd_boolean |
116c20d2 | 3974 | aout_link_write_symbols (struct aout_final_link_info *finfo, bfd *input_bfd) |
e135f41b | 3975 | { |
e135f41b | 3976 | bfd *output_bfd; |
116c20d2 | 3977 | bfd_size_type sym_count; |
e135f41b | 3978 | char *strings; |
116c20d2 NC |
3979 | enum bfd_link_strip strip; |
3980 | enum bfd_link_discard discard; | |
3981 | struct external_nlist *outsym; | |
3982 | bfd_size_type strtab_index; | |
3983 | struct external_nlist *sym; | |
3984 | struct external_nlist *sym_end; | |
3985 | struct aout_link_hash_entry **sym_hash; | |
e135f41b | 3986 | int *symbol_map; |
116c20d2 NC |
3987 | bfd_boolean pass; |
3988 | bfd_boolean skip_next; | |
e135f41b NC |
3989 | |
3990 | output_bfd = finfo->output_bfd; | |
116c20d2 | 3991 | sym_count = obj_aout_external_sym_count (input_bfd); |
e135f41b | 3992 | strings = obj_aout_external_strings (input_bfd); |
116c20d2 NC |
3993 | strip = finfo->info->strip; |
3994 | discard = finfo->info->discard; | |
3995 | outsym = finfo->output_syms; | |
e135f41b | 3996 | |
116c20d2 NC |
3997 | /* First write out a symbol for this object file, unless we are |
3998 | discarding such symbols. */ | |
3999 | if (strip != strip_all | |
4000 | && (strip != strip_some | |
4001 | || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename, | |
4002 | FALSE, FALSE) != NULL) | |
4003 | && discard != discard_all) | |
4004 | { | |
4005 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); | |
4006 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, | |
4007 | input_bfd->filename, FALSE); | |
4008 | if (strtab_index == (bfd_size_type) -1) | |
4009 | return FALSE; | |
4010 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4011 | PUT_WORD (output_bfd, | |
4012 | (bfd_get_section_vma (output_bfd, | |
4013 | obj_textsec (input_bfd)->output_section) | |
4014 | + obj_textsec (input_bfd)->output_offset), | |
4015 | outsym->e_value); | |
4016 | ++obj_aout_external_sym_count (output_bfd); | |
4017 | ++outsym; | |
4018 | } | |
4019 | ||
4020 | pass = FALSE; | |
4021 | skip_next = FALSE; | |
4022 | sym = obj_aout_external_syms (input_bfd); | |
4023 | sym_end = sym + sym_count; | |
4024 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
4025 | symbol_map = finfo->symbol_map; | |
4026 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); | |
4027 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) | |
e135f41b | 4028 | { |
116c20d2 NC |
4029 | const char *name; |
4030 | int type; | |
4031 | struct aout_link_hash_entry *h; | |
4032 | bfd_boolean skip; | |
4033 | asection *symsec; | |
4034 | bfd_vma val = 0; | |
4035 | bfd_boolean copy; | |
e135f41b | 4036 | |
116c20d2 NC |
4037 | /* We set *symbol_map to 0 above for all symbols. If it has |
4038 | already been set to -1 for this symbol, it means that we are | |
4039 | discarding it because it appears in a duplicate header file. | |
4040 | See the N_BINCL code below. */ | |
4041 | if (*symbol_map == -1) | |
e135f41b NC |
4042 | continue; |
4043 | ||
116c20d2 NC |
4044 | /* Initialize *symbol_map to -1, which means that the symbol was |
4045 | not copied into the output file. We will change it later if | |
4046 | we do copy the symbol over. */ | |
4047 | *symbol_map = -1; | |
e135f41b | 4048 | |
116c20d2 NC |
4049 | type = H_GET_8 (input_bfd, sym->e_type); |
4050 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
e135f41b | 4051 | |
116c20d2 | 4052 | h = NULL; |
e135f41b | 4053 | |
116c20d2 | 4054 | if (pass) |
e135f41b | 4055 | { |
116c20d2 NC |
4056 | /* Pass this symbol through. It is the target of an |
4057 | indirect or warning symbol. */ | |
4058 | val = GET_WORD (input_bfd, sym->e_value); | |
4059 | pass = FALSE; | |
4060 | } | |
4061 | else if (skip_next) | |
4062 | { | |
4063 | /* Skip this symbol, which is the target of an indirect | |
4064 | symbol that we have changed to no longer be an indirect | |
4065 | symbol. */ | |
4066 | skip_next = FALSE; | |
4067 | continue; | |
4068 | } | |
4069 | else | |
4070 | { | |
4071 | struct aout_link_hash_entry *hresolve; | |
e135f41b | 4072 | |
116c20d2 NC |
4073 | /* We have saved the hash table entry for this symbol, if |
4074 | there is one. Note that we could just look it up again | |
4075 | in the hash table, provided we first check that it is an | |
4076 | external symbol. */ | |
4077 | h = *sym_hash; | |
e135f41b | 4078 | |
116c20d2 NC |
4079 | /* Use the name from the hash table, in case the symbol was |
4080 | wrapped. */ | |
4081 | if (h != NULL) | |
4082 | name = h->root.root.string; | |
e135f41b | 4083 | |
116c20d2 NC |
4084 | /* If this is an indirect or warning symbol, then change |
4085 | hresolve to the base symbol. We also change *sym_hash so | |
4086 | that the relocation routines relocate against the real | |
4087 | symbol. */ | |
4088 | hresolve = h; | |
4089 | if (h != NULL | |
4090 | && (h->root.type == bfd_link_hash_indirect | |
4091 | || h->root.type == bfd_link_hash_warning)) | |
4092 | { | |
4093 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; | |
4094 | while (hresolve->root.type == bfd_link_hash_indirect | |
4095 | || hresolve->root.type == bfd_link_hash_warning) | |
4096 | hresolve = ((struct aout_link_hash_entry *) | |
4097 | hresolve->root.u.i.link); | |
4098 | *sym_hash = hresolve; | |
4099 | } | |
e135f41b | 4100 | |
116c20d2 NC |
4101 | /* If the symbol has already been written out, skip it. */ |
4102 | if (h != NULL | |
4103 | && h->root.type != bfd_link_hash_warning | |
4104 | && h->written) | |
4105 | { | |
4106 | if ((type & N_TYPE) == N_INDR | |
4107 | || type == N_WARNING) | |
4108 | skip_next = TRUE; | |
4109 | *symbol_map = h->indx; | |
4110 | continue; | |
4111 | } | |
e135f41b | 4112 | |
116c20d2 NC |
4113 | /* See if we are stripping this symbol. */ |
4114 | skip = FALSE; | |
4115 | switch (strip) | |
4116 | { | |
4117 | case strip_none: | |
4118 | break; | |
4119 | case strip_debugger: | |
4120 | if ((type & N_STAB) != 0) | |
4121 | skip = TRUE; | |
4122 | break; | |
4123 | case strip_some: | |
4124 | if (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE, FALSE) | |
4125 | == NULL) | |
4126 | skip = TRUE; | |
4127 | break; | |
4128 | case strip_all: | |
4129 | skip = TRUE; | |
4130 | break; | |
e135f41b | 4131 | } |
116c20d2 | 4132 | if (skip) |
e135f41b | 4133 | { |
116c20d2 NC |
4134 | if (h != NULL) |
4135 | h->written = TRUE; | |
4136 | continue; | |
4137 | } | |
e135f41b | 4138 | |
116c20d2 NC |
4139 | /* Get the value of the symbol. */ |
4140 | if ((type & N_TYPE) == N_TEXT | |
4141 | || type == N_WEAKT) | |
4142 | symsec = obj_textsec (input_bfd); | |
4143 | else if ((type & N_TYPE) == N_DATA | |
4144 | || type == N_WEAKD) | |
4145 | symsec = obj_datasec (input_bfd); | |
4146 | else if ((type & N_TYPE) == N_BSS | |
4147 | || type == N_WEAKB) | |
4148 | symsec = obj_bsssec (input_bfd); | |
4149 | else if ((type & N_TYPE) == N_ABS | |
4150 | || type == N_WEAKA) | |
4151 | symsec = bfd_abs_section_ptr; | |
4152 | else if (((type & N_TYPE) == N_INDR | |
4153 | && (hresolve == NULL | |
4154 | || (hresolve->root.type != bfd_link_hash_defined | |
4155 | && hresolve->root.type != bfd_link_hash_defweak | |
4156 | && hresolve->root.type != bfd_link_hash_common))) | |
4157 | || type == N_WARNING) | |
4158 | { | |
4159 | /* Pass the next symbol through unchanged. The | |
4160 | condition above for indirect symbols is so that if | |
4161 | the indirect symbol was defined, we output it with | |
4162 | the correct definition so the debugger will | |
4163 | understand it. */ | |
4164 | pass = TRUE; | |
4165 | val = GET_WORD (input_bfd, sym->e_value); | |
4166 | symsec = NULL; | |
4167 | } | |
4168 | else if ((type & N_STAB) != 0) | |
4169 | { | |
4170 | val = GET_WORD (input_bfd, sym->e_value); | |
4171 | symsec = NULL; | |
e135f41b | 4172 | } |
116c20d2 NC |
4173 | else |
4174 | { | |
4175 | /* If we get here with an indirect symbol, it means that | |
4176 | we are outputting it with a real definition. In such | |
4177 | a case we do not want to output the next symbol, | |
4178 | which is the target of the indirection. */ | |
4179 | if ((type & N_TYPE) == N_INDR) | |
4180 | skip_next = TRUE; | |
e135f41b | 4181 | |
116c20d2 | 4182 | symsec = NULL; |
e135f41b | 4183 | |
116c20d2 NC |
4184 | /* We need to get the value from the hash table. We use |
4185 | hresolve so that if we have defined an indirect | |
4186 | symbol we output the final definition. */ | |
4187 | if (h == NULL) | |
4188 | { | |
4189 | switch (type & N_TYPE) | |
4190 | { | |
4191 | case N_SETT: | |
4192 | symsec = obj_textsec (input_bfd); | |
4193 | break; | |
4194 | case N_SETD: | |
4195 | symsec = obj_datasec (input_bfd); | |
4196 | break; | |
4197 | case N_SETB: | |
4198 | symsec = obj_bsssec (input_bfd); | |
4199 | break; | |
4200 | case N_SETA: | |
4201 | symsec = bfd_abs_section_ptr; | |
4202 | break; | |
4203 | default: | |
4204 | val = 0; | |
4205 | break; | |
4206 | } | |
4207 | } | |
4208 | else if (hresolve->root.type == bfd_link_hash_defined | |
4209 | || hresolve->root.type == bfd_link_hash_defweak) | |
4210 | { | |
4211 | asection *input_section; | |
4212 | asection *output_section; | |
e135f41b | 4213 | |
116c20d2 NC |
4214 | /* This case usually means a common symbol which was |
4215 | turned into a defined symbol. */ | |
4216 | input_section = hresolve->root.u.def.section; | |
4217 | output_section = input_section->output_section; | |
4218 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
4219 | || output_section->owner == output_bfd); | |
4220 | val = (hresolve->root.u.def.value | |
4221 | + bfd_get_section_vma (output_bfd, output_section) | |
4222 | + input_section->output_offset); | |
e135f41b | 4223 | |
116c20d2 NC |
4224 | /* Get the correct type based on the section. If |
4225 | this is a constructed set, force it to be | |
4226 | globally visible. */ | |
4227 | if (type == N_SETT | |
4228 | || type == N_SETD | |
4229 | || type == N_SETB | |
4230 | || type == N_SETA) | |
4231 | type |= N_EXT; | |
e135f41b | 4232 | |
116c20d2 | 4233 | type &=~ N_TYPE; |
e135f41b | 4234 | |
116c20d2 NC |
4235 | if (output_section == obj_textsec (output_bfd)) |
4236 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4237 | ? N_TEXT | |
4238 | : N_WEAKT); | |
4239 | else if (output_section == obj_datasec (output_bfd)) | |
4240 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4241 | ? N_DATA | |
4242 | : N_WEAKD); | |
4243 | else if (output_section == obj_bsssec (output_bfd)) | |
4244 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4245 | ? N_BSS | |
4246 | : N_WEAKB); | |
4247 | else | |
4248 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4249 | ? N_ABS | |
4250 | : N_WEAKA); | |
e135f41b | 4251 | } |
116c20d2 NC |
4252 | else if (hresolve->root.type == bfd_link_hash_common) |
4253 | val = hresolve->root.u.c.size; | |
4254 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
e135f41b | 4255 | { |
116c20d2 NC |
4256 | val = 0; |
4257 | type = N_WEAKU; | |
e135f41b | 4258 | } |
116c20d2 NC |
4259 | else |
4260 | val = 0; | |
e135f41b | 4261 | } |
116c20d2 NC |
4262 | if (symsec != NULL) |
4263 | val = (symsec->output_section->vma | |
4264 | + symsec->output_offset | |
4265 | + (GET_WORD (input_bfd, sym->e_value) | |
4266 | - symsec->vma)); | |
e135f41b | 4267 | |
116c20d2 NC |
4268 | /* If this is a global symbol set the written flag, and if |
4269 | it is a local symbol see if we should discard it. */ | |
4270 | if (h != NULL) | |
e135f41b | 4271 | { |
116c20d2 NC |
4272 | h->written = TRUE; |
4273 | h->indx = obj_aout_external_sym_count (output_bfd); | |
e135f41b | 4274 | } |
116c20d2 NC |
4275 | else if ((type & N_TYPE) != N_SETT |
4276 | && (type & N_TYPE) != N_SETD | |
4277 | && (type & N_TYPE) != N_SETB | |
4278 | && (type & N_TYPE) != N_SETA) | |
e135f41b | 4279 | { |
116c20d2 NC |
4280 | switch (discard) |
4281 | { | |
4282 | case discard_none: | |
4283 | case discard_sec_merge: | |
4284 | break; | |
4285 | case discard_l: | |
4286 | if ((type & N_STAB) == 0 | |
4287 | && bfd_is_local_label_name (input_bfd, name)) | |
4288 | skip = TRUE; | |
4289 | break; | |
4290 | case discard_all: | |
4291 | skip = TRUE; | |
4292 | break; | |
4293 | } | |
4294 | if (skip) | |
4295 | { | |
4296 | pass = FALSE; | |
4297 | continue; | |
4298 | } | |
e135f41b NC |
4299 | } |
4300 | ||
116c20d2 NC |
4301 | /* An N_BINCL symbol indicates the start of the stabs |
4302 | entries for a header file. We need to scan ahead to the | |
4303 | next N_EINCL symbol, ignoring nesting, adding up all the | |
4304 | characters in the symbol names, not including the file | |
4305 | numbers in types (the first number after an open | |
4306 | parenthesis). */ | |
4307 | if (type == N_BINCL) | |
e135f41b | 4308 | { |
116c20d2 NC |
4309 | struct external_nlist *incl_sym; |
4310 | int nest; | |
4311 | struct aout_link_includes_entry *incl_entry; | |
4312 | struct aout_link_includes_totals *t; | |
e135f41b | 4313 | |
116c20d2 NC |
4314 | val = 0; |
4315 | nest = 0; | |
4316 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
4317 | { | |
4318 | int incl_type; | |
e135f41b | 4319 | |
116c20d2 NC |
4320 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
4321 | if (incl_type == N_EINCL) | |
4322 | { | |
4323 | if (nest == 0) | |
4324 | break; | |
4325 | --nest; | |
4326 | } | |
4327 | else if (incl_type == N_BINCL) | |
4328 | ++nest; | |
4329 | else if (nest == 0) | |
4330 | { | |
4331 | const char *s; | |
e135f41b | 4332 | |
116c20d2 NC |
4333 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); |
4334 | for (; *s != '\0'; s++) | |
4335 | { | |
4336 | val += *s; | |
4337 | if (*s == '(') | |
4338 | { | |
4339 | /* Skip the file number. */ | |
4340 | ++s; | |
4341 | while (ISDIGIT (*s)) | |
4342 | ++s; | |
4343 | --s; | |
4344 | } | |
4345 | } | |
4346 | } | |
4347 | } | |
e135f41b | 4348 | |
116c20d2 NC |
4349 | /* If we have already included a header file with the |
4350 | same value, then replace this one with an N_EXCL | |
4351 | symbol. */ | |
4352 | copy = ! finfo->info->keep_memory; | |
4353 | incl_entry = aout_link_includes_lookup (&finfo->includes, | |
4354 | name, TRUE, copy); | |
4355 | if (incl_entry == NULL) | |
4356 | return FALSE; | |
4357 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
4358 | if (t->total == val) | |
4359 | break; | |
4360 | if (t == NULL) | |
4361 | { | |
4362 | /* This is the first time we have seen this header | |
4363 | file with this set of stabs strings. */ | |
4364 | t = bfd_hash_allocate (&finfo->includes.root, | |
4365 | sizeof *t); | |
4366 | if (t == NULL) | |
4367 | return FALSE; | |
4368 | t->total = val; | |
4369 | t->next = incl_entry->totals; | |
4370 | incl_entry->totals = t; | |
4371 | } | |
4372 | else | |
4373 | { | |
4374 | int *incl_map; | |
e135f41b | 4375 | |
116c20d2 NC |
4376 | /* This is a duplicate header file. We must change |
4377 | it to be an N_EXCL entry, and mark all the | |
4378 | included symbols to prevent outputting them. */ | |
4379 | type = N_EXCL; | |
e135f41b | 4380 | |
116c20d2 NC |
4381 | nest = 0; |
4382 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
4383 | incl_sym < sym_end; | |
4384 | incl_sym++, incl_map++) | |
4385 | { | |
4386 | int incl_type; | |
e135f41b | 4387 | |
116c20d2 NC |
4388 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
4389 | if (incl_type == N_EINCL) | |
4390 | { | |
4391 | if (nest == 0) | |
4392 | { | |
4393 | *incl_map = -1; | |
4394 | break; | |
4395 | } | |
4396 | --nest; | |
4397 | } | |
4398 | else if (incl_type == N_BINCL) | |
4399 | ++nest; | |
4400 | else if (nest == 0) | |
4401 | *incl_map = -1; | |
4402 | } | |
4403 | } | |
4404 | } | |
e135f41b | 4405 | } |
e135f41b | 4406 | |
116c20d2 NC |
4407 | /* Copy this symbol into the list of symbols we are going to |
4408 | write out. */ | |
4409 | H_PUT_8 (output_bfd, type, outsym->e_type); | |
4410 | copy = FALSE; | |
4411 | if (! finfo->info->keep_memory) | |
e135f41b | 4412 | { |
116c20d2 NC |
4413 | /* name points into a string table which we are going to |
4414 | free. If there is a hash table entry, use that string. | |
4415 | Otherwise, copy name into memory. */ | |
4416 | if (h != NULL) | |
4417 | name = h->root.root.string; | |
4418 | else | |
4419 | copy = TRUE; | |
e135f41b | 4420 | } |
116c20d2 NC |
4421 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
4422 | name, copy); | |
4423 | if (strtab_index == (bfd_size_type) -1) | |
4424 | return FALSE; | |
4425 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4426 | PUT_WORD (output_bfd, val, outsym->e_value); | |
4427 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
4428 | ++obj_aout_external_sym_count (output_bfd); | |
4429 | ++outsym; | |
e135f41b NC |
4430 | } |
4431 | ||
116c20d2 NC |
4432 | /* Write out the output symbols we have just constructed. */ |
4433 | if (outsym > finfo->output_syms) | |
e135f41b NC |
4434 | { |
4435 | bfd_size_type size; | |
e135f41b | 4436 | |
116c20d2 | 4437 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0) |
b34976b6 | 4438 | return FALSE; |
116c20d2 NC |
4439 | size = outsym - finfo->output_syms; |
4440 | size *= EXTERNAL_NLIST_SIZE; | |
4441 | if (bfd_bwrite ((void *) finfo->output_syms, size, output_bfd) != size) | |
b34976b6 | 4442 | return FALSE; |
116c20d2 | 4443 | finfo->symoff += size; |
e135f41b NC |
4444 | } |
4445 | ||
b34976b6 | 4446 | return TRUE; |
e135f41b | 4447 | } |
116c20d2 NC |
4448 | |
4449 | /* Write out a symbol that was not associated with an a.out input | |
4450 | object. */ | |
e135f41b | 4451 | |
edeb6e24 AM |
4452 | static bfd_vma |
4453 | bfd_getp32 (const void *p) | |
e135f41b | 4454 | { |
edeb6e24 AM |
4455 | const bfd_byte *addr = p; |
4456 | unsigned long v; | |
116c20d2 | 4457 | |
edeb6e24 AM |
4458 | v = (unsigned long) addr[1] << 24; |
4459 | v |= (unsigned long) addr[0] << 16; | |
4460 | v |= (unsigned long) addr[3] << 8; | |
4461 | v |= (unsigned long) addr[2]; | |
4462 | return v; | |
e135f41b NC |
4463 | } |
4464 | ||
4465 | #define COERCE32(x) (((bfd_signed_vma) (x) ^ 0x80000000) - 0x80000000) | |
4466 | ||
edeb6e24 AM |
4467 | static bfd_signed_vma |
4468 | bfd_getp_signed_32 (const void *p) | |
e135f41b | 4469 | { |
edeb6e24 AM |
4470 | const bfd_byte *addr = p; |
4471 | unsigned long v; | |
116c20d2 | 4472 | |
edeb6e24 AM |
4473 | v = (unsigned long) addr[1] << 24; |
4474 | v |= (unsigned long) addr[0] << 16; | |
4475 | v |= (unsigned long) addr[3] << 8; | |
4476 | v |= (unsigned long) addr[2]; | |
4477 | return COERCE32 (v); | |
e135f41b NC |
4478 | } |
4479 | ||
edeb6e24 AM |
4480 | static void |
4481 | bfd_putp32 (bfd_vma data, void *p) | |
e135f41b | 4482 | { |
edeb6e24 | 4483 | bfd_byte *addr = p; |
116c20d2 | 4484 | |
edeb6e24 AM |
4485 | addr[0] = (data >> 16) & 0xff; |
4486 | addr[1] = (data >> 24) & 0xff; | |
4487 | addr[2] = (data >> 0) & 0xff; | |
4488 | addr[3] = (data >> 8) & 0xff; | |
e135f41b | 4489 | } |
116c20d2 NC |
4490 | |
4491 | const bfd_target MY (vec) = | |
4492 | { | |
4493 | TARGETNAME, /* Name. */ | |
4494 | bfd_target_aout_flavour, | |
4495 | BFD_ENDIAN_LITTLE, /* Target byte order (little). */ | |
4496 | BFD_ENDIAN_LITTLE, /* Target headers byte order (little). */ | |
4497 | (HAS_RELOC | EXEC_P | /* Object flags. */ | |
4498 | HAS_LINENO | HAS_DEBUG | | |
4499 | HAS_SYMS | HAS_LOCALS | WP_TEXT), | |
4500 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA), | |
4501 | MY_symbol_leading_char, | |
4502 | AR_PAD_CHAR, /* AR_pad_char. */ | |
4503 | 15, /* AR_max_namelen. */ | |
4504 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
4505 | bfd_getp32, bfd_getp_signed_32, bfd_putp32, | |
4506 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */ | |
4507 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
4508 | bfd_getp32, bfd_getp_signed_32, bfd_putp32, | |
4509 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Headers. */ | |
4510 | {_bfd_dummy_target, MY_object_p, /* bfd_check_format. */ | |
4511 | bfd_generic_archive_p, MY_core_file_p}, | |
4512 | {bfd_false, MY_mkobject, /* bfd_set_format. */ | |
4513 | _bfd_generic_mkarchive, bfd_false}, | |
4514 | {bfd_false, MY_write_object_contents, /* bfd_write_contents. */ | |
4515 | _bfd_write_archive_contents, bfd_false}, | |
4516 | ||
4517 | BFD_JUMP_TABLE_GENERIC (MY), | |
4518 | BFD_JUMP_TABLE_COPY (MY), | |
4519 | BFD_JUMP_TABLE_CORE (MY), | |
4520 | BFD_JUMP_TABLE_ARCHIVE (MY), | |
4521 | BFD_JUMP_TABLE_SYMBOLS (MY), | |
4522 | BFD_JUMP_TABLE_RELOCS (MY), | |
4523 | BFD_JUMP_TABLE_WRITE (MY), | |
4524 | BFD_JUMP_TABLE_LINK (MY), | |
4525 | BFD_JUMP_TABLE_DYNAMIC (MY), | |
4526 | ||
4527 | /* Alternative_target. */ | |
4528 | NULL, | |
4529 | ||
4530 | (void *) MY_backend_data | |
4531 | }; |