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e135f41b | 1 | /* BFD back-end for PDP-11 a.out binaries. |
d87bef3a | 2 | Copyright (C) 2001-2023 Free Software Foundation, Inc. |
e135f41b | 3 | |
42ef282f | 4 | This file is part of BFD, the Binary File Descriptor library. |
e135f41b | 5 | |
42ef282f NC |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 8 | the Free Software Foundation; either version 3 of the License, or |
42ef282f | 9 | (at your option) any later version. |
e135f41b | 10 | |
42ef282f NC |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
e135f41b | 15 | |
42ef282f NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
20 | ||
e135f41b NC |
21 | |
22 | /* BFD backend for PDP-11, running 2.11BSD in particular. | |
23 | ||
24 | This file was hacked up by looking hard at the existing vaxnetbsd | |
a975c88e SC |
25 | back end and the header files in 2.11BSD. The symbol table format |
26 | of 2.11BSD has been extended to accommodate .stab symbols. See | |
27 | struct pdp11_external_nlist below for details. | |
e135f41b NC |
28 | |
29 | TODO | |
30 | * support for V7 file formats | |
31 | * support for overlay object files (see 2.11 a.out(5)) | |
32 | * support for old and very old archives | |
33 | (see 2.11 ar(5), historical section) | |
dc810e39 | 34 | |
e135f41b NC |
35 | Search for TODO to find other areas needing more work. */ |
36 | ||
37 | #define BYTES_IN_WORD 2 | |
38 | #define BYTES_IN_LONG 4 | |
39 | #define ARCH_SIZE 16 | |
40 | #undef TARGET_IS_BIG_ENDIAN_P | |
41 | ||
0d1cc75d | 42 | #define TARGET_PAGE_SIZE 8192 |
e135f41b NC |
43 | #define SEGMENT__SIZE TARGET_PAGE_SIZE |
44 | ||
45 | #define DEFAULT_ARCH bfd_arch_pdp11 | |
07d6d2b8 | 46 | #define DEFAULT_MID M_PDP11 |
e135f41b | 47 | |
e43d48cc AM |
48 | /* Do not "beautify" the CONCAT* macro args. Traditional C will not |
49 | remove whitespace added here, and thus will fail to concatenate | |
50 | the tokens. */ | |
51 | #define MY(OP) CONCAT2 (pdp11_aout_,OP) | |
52 | ||
e135f41b NC |
53 | /* This needs to start with a.out so GDB knows it is an a.out variant. */ |
54 | #define TARGETNAME "a.out-pdp11" | |
55 | ||
56 | /* This is the normal load address for executables. */ | |
57 | #define TEXT_START_ADDR 0 | |
58 | ||
59 | /* The header is not included in the text segment. */ | |
60 | #define N_HEADER_IN_TEXT(x) 0 | |
61 | ||
e135f41b | 62 | /* There is no flags field. */ |
bbb1afc8 | 63 | #define N_FLAGS(execp) 0 |
e135f41b | 64 | |
bbb1afc8 | 65 | #define N_SET_FLAGS(execp, flags) do { } while (0) |
a77e83b7 AM |
66 | #define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ |
67 | && N_MAGIC(x) != NMAGIC \ | |
fa1477dc | 68 | && N_MAGIC(x) != IMAGIC \ |
a77e83b7 | 69 | && N_MAGIC(x) != ZMAGIC) |
e135f41b | 70 | |
3db64b00 | 71 | #include "sysdep.h" |
7a6e0d89 | 72 | #include <limits.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. */ | |
07d6d2b8 | 86 | bfd_byte e_relocatable; /* Ugly hack. */ |
116c20d2 | 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. */ | |
fa1477dc SC |
96 | #define IMAGIC 0411 /* Separated I&D. */ |
97 | #define A_MAGIC3 IMAGIC | |
116c20d2 NC |
98 | #define A_MAGIC4 0405 /* Overlay. */ |
99 | #define A_MAGIC5 0430 /* Auto-overlay (nonseparate). */ | |
100 | #define A_MAGIC6 0431 /* Auto-overlay (separate). */ | |
e135f41b NC |
101 | #define QMAGIC 0 |
102 | #define BMAGIC 0 | |
103 | ||
104 | #define A_FLAG_RELOC_STRIPPED 0x0001 | |
105 | ||
a975c88e SC |
106 | /* The following struct defines the format of an entry in the object file |
107 | symbol table. In the original 2.11BSD struct the index into the string | |
108 | table is stored as a long, but the PDP11 C convention for storing a long in | |
109 | memory placed the most significant word first even though the bytes within a | |
110 | word are stored least significant first. So here the string table index is | |
111 | considered to be just 16 bits and the first two bytes of the struct were | |
112 | previously named e_unused. To extend the symbol table format to accommodate | |
113 | .stab symbols, the e_unused bytes are renamed e_desc to store the desc field | |
114 | of the .stab symbol. The GDP Project's STABS document says that the "other" | |
115 | field is almost always unused and can be set to zero; the only nonzero cases | |
116 | identified were for stabs in their own sections, which does not apply for | |
117 | pdp11 a.out format, and for a special case of GNU Modula2 which is not | |
118 | supported for the PDP11. */ | |
e135f41b NC |
119 | #define external_nlist pdp11_external_nlist |
120 | struct pdp11_external_nlist | |
116c20d2 | 121 | { |
a975c88e | 122 | bfd_byte e_desc[2]; /* The desc field for .stab symbols, else 0. */ |
116c20d2 NC |
123 | bfd_byte e_strx[2]; /* Index into string table of name. */ |
124 | bfd_byte e_type[1]; /* Type of symbol. */ | |
125 | bfd_byte e_ovly[1]; /* Overlay number. */ | |
126 | bfd_byte e_value[2]; /* Value of symbol. */ | |
127 | }; | |
e135f41b NC |
128 | |
129 | #define EXTERNAL_NLIST_SIZE 8 | |
130 | ||
131 | #define N_TXTOFF(x) (EXEC_BYTES_SIZE) | |
bbb1afc8 AM |
132 | #define N_DATOFF(x) (N_TXTOFF(x) + (x)->a_text) |
133 | #define N_TRELOFF(x) (N_DATOFF(x) + (x)->a_data) | |
134 | #define N_DRELOFF(x) (N_TRELOFF(x) + (x)->a_trsize) | |
135 | #define N_SYMOFF(x) (N_DRELOFF(x) + (x)->a_drsize) | |
136 | #define N_STROFF(x) (N_SYMOFF(x) + (x)->a_syms) | |
e135f41b NC |
137 | |
138 | #define WRITE_HEADERS(abfd, execp) pdp11_aout_write_headers (abfd, execp) | |
139 | ||
e135f41b NC |
140 | #include "libbfd.h" |
141 | #include "libaout.h" | |
142 | ||
143 | #define SWAP_MAGIC(ext) bfd_getl16 (ext) | |
144 | ||
145 | #define MY_entry_is_text_address 1 | |
146 | ||
147 | #define MY_write_object_contents MY(write_object_contents) | |
0a1b45a2 | 148 | static bool MY(write_object_contents) (bfd *); |
e135f41b NC |
149 | #define MY_text_includes_header 1 |
150 | ||
e135f41b NC |
151 | #define MY_BFD_TARGET |
152 | ||
153 | #include "aout-target.h" | |
154 | ||
116c20d2 | 155 | /* Start of modified aoutx.h. */ |
e135f41b NC |
156 | #define KEEPIT udata.i |
157 | ||
116c20d2 | 158 | #include <string.h> /* For strchr and friends. */ |
e135f41b NC |
159 | #include "bfd.h" |
160 | #include "sysdep.h" | |
3882b010 | 161 | #include "safe-ctype.h" |
e135f41b NC |
162 | #include "bfdlink.h" |
163 | ||
164 | #include "libaout.h" | |
e135f41b NC |
165 | #include "aout/aout64.h" |
166 | #include "aout/stab_gnu.h" | |
167 | #include "aout/ar.h" | |
168 | ||
a975c88e SC |
169 | /* The symbol type numbers for the 16-bit a.out format from 2.11BSD differ from |
170 | those defined in aout64.h so we must redefine them here. N_EXT changes from | |
171 | 0x01 to 0x20 which creates a conflict with some .stab values, in particular | |
172 | between undefined externals (N_UNDF+N_EXT) vs. global variables (N_GYSM) and | |
173 | between external bss symbols (N_BSS+N_EXT) vs. function names (N_FUN). We | |
174 | disambiguate those conflicts with a hack in is_stab() to look for the ':' in | |
175 | the global variable or function name string. */ | |
e135f41b NC |
176 | #undef N_TYPE |
177 | #undef N_UNDF | |
178 | #undef N_ABS | |
179 | #undef N_TEXT | |
180 | #undef N_DATA | |
181 | #undef N_BSS | |
182 | #undef N_REG | |
183 | #undef N_FN | |
184 | #undef N_EXT | |
23c8270e | 185 | #undef N_STAB |
116c20d2 NC |
186 | #define N_TYPE 0x1f /* Type mask. */ |
187 | #define N_UNDF 0x00 /* Undefined. */ | |
188 | #define N_ABS 0x01 /* Absolute. */ | |
189 | #define N_TEXT 0x02 /* Text segment. */ | |
190 | #define N_DATA 0x03 /* Data segment. */ | |
191 | #define N_BSS 0x04 /* Bss segment. */ | |
192 | #define N_REG 0x14 /* Register symbol. */ | |
193 | #define N_FN 0x1f /* File name. */ | |
194 | #define N_EXT 0x20 /* External flag. */ | |
a975c88e SC |
195 | /* Type numbers from .stab entries that could conflict: |
196 | N_GSYM 0x20 Global variable [conflict with external undef] | |
197 | N_FNAME 0x22 Function name (for BSD Fortran) [ignored] | |
198 | N_FUN 0x24 Function name [conflict with external BSS] | |
199 | N_NOMAP 0x34 No DST map for sym. [ext. reg. doesn't exist] | |
200 | */ | |
e135f41b NC |
201 | |
202 | #define RELOC_SIZE 2 | |
203 | ||
116c20d2 NC |
204 | #define RELFLG 0x0001 /* PC-relative flag. */ |
205 | #define RTYPE 0x000e /* Type mask. */ | |
206 | #define RIDXMASK 0xfff0 /* Index mask. */ | |
e135f41b | 207 | |
116c20d2 NC |
208 | #define RABS 0x00 /* Absolute. */ |
209 | #define RTEXT 0x02 /* Text. */ | |
210 | #define RDATA 0x04 /* Data. */ | |
211 | #define RBSS 0x06 /* Bss. */ | |
212 | #define REXT 0x08 /* External. */ | |
e135f41b NC |
213 | |
214 | #define RINDEX(x) (((x) & 0xfff0) >> 4) | |
215 | ||
e135f41b NC |
216 | #ifndef MY_final_link_relocate |
217 | #define MY_final_link_relocate _bfd_final_link_relocate | |
218 | #endif | |
219 | ||
220 | #ifndef MY_relocate_contents | |
221 | #define MY_relocate_contents _bfd_relocate_contents | |
222 | #endif | |
223 | ||
116c20d2 NC |
224 | /* A hash table used for header files with N_BINCL entries. */ |
225 | ||
226 | struct aout_link_includes_table | |
227 | { | |
228 | struct bfd_hash_table root; | |
229 | }; | |
230 | ||
231 | /* A linked list of totals that we have found for a particular header | |
232 | file. */ | |
233 | ||
234 | struct aout_link_includes_totals | |
235 | { | |
236 | struct aout_link_includes_totals *next; | |
237 | bfd_vma total; | |
238 | }; | |
239 | ||
240 | /* An entry in the header file hash table. */ | |
241 | ||
242 | struct aout_link_includes_entry | |
243 | { | |
244 | struct bfd_hash_entry root; | |
245 | /* List of totals we have found for this file. */ | |
246 | struct aout_link_includes_totals *totals; | |
247 | }; | |
248 | ||
249 | /* During the final link step we need to pass around a bunch of | |
250 | information, so we do it in an instance of this structure. */ | |
251 | ||
252 | struct aout_final_link_info | |
253 | { | |
254 | /* General link information. */ | |
255 | struct bfd_link_info *info; | |
256 | /* Output bfd. */ | |
257 | bfd *output_bfd; | |
258 | /* Reloc file positions. */ | |
259 | file_ptr treloff, dreloff; | |
260 | /* File position of symbols. */ | |
261 | file_ptr symoff; | |
262 | /* String table. */ | |
263 | struct bfd_strtab_hash *strtab; | |
264 | /* Header file hash table. */ | |
265 | struct aout_link_includes_table includes; | |
266 | /* A buffer large enough to hold the contents of any section. */ | |
267 | bfd_byte *contents; | |
268 | /* A buffer large enough to hold the relocs of any section. */ | |
269 | void * relocs; | |
270 | /* A buffer large enough to hold the symbol map of any input BFD. */ | |
271 | int *symbol_map; | |
272 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
273 | struct external_nlist *output_syms; | |
274 | }; | |
275 | ||
fa1477dc SC |
276 | /* Copy of the link_info.separate_code boolean to select the output format with |
277 | separate instruction and data spaces selected by --imagic */ | |
0a1b45a2 | 278 | static bool separate_i_d = false; |
fa1477dc | 279 | |
e135f41b NC |
280 | reloc_howto_type howto_table_pdp11[] = |
281 | { | |
07d6d2b8 | 282 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ |
38afcc0c PK |
283 | HOWTO( 0, 0, 2, 16, false, 0, complain_overflow_dont,0,"16", true, 0x0000ffff,0x0000ffff, false), |
284 | HOWTO( 1, 0, 2, 16, true, 0, complain_overflow_dont,0,"DISP16", true, 0x0000ffff,0x0000ffff, false), | |
285 | HOWTO( 2, 0, 4, 32, false, 0, complain_overflow_dont,0,"32", true, 0x0000ffff,0x0000ffff, false), | |
e135f41b NC |
286 | }; |
287 | ||
288 | #define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0])) | |
289 | ||
116c20d2 | 290 | |
0a1b45a2 AM |
291 | static bool aout_link_check_archive_element (bfd *, struct bfd_link_info *, |
292 | struct bfd_link_hash_entry *, | |
293 | const char *, bool *); | |
294 | static bool aout_link_add_object_symbols (bfd *, struct bfd_link_info *); | |
295 | static bool aout_link_add_symbols (bfd *, struct bfd_link_info *); | |
296 | static bool aout_link_write_symbols (struct aout_final_link_info *, bfd *); | |
116c20d2 NC |
297 | |
298 | ||
e135f41b | 299 | reloc_howto_type * |
116c20d2 NC |
300 | NAME (aout, reloc_type_lookup) (bfd * abfd ATTRIBUTE_UNUSED, |
301 | bfd_reloc_code_real_type code) | |
e135f41b NC |
302 | { |
303 | switch (code) | |
304 | { | |
305 | case BFD_RELOC_16: | |
306 | return &howto_table_pdp11[0]; | |
307 | case BFD_RELOC_16_PCREL: | |
308 | return &howto_table_pdp11[1]; | |
66e3eb08 SC |
309 | case BFD_RELOC_32: |
310 | return &howto_table_pdp11[2]; | |
e135f41b | 311 | default: |
116c20d2 | 312 | return NULL; |
e135f41b NC |
313 | } |
314 | } | |
315 | ||
157090f7 AM |
316 | reloc_howto_type * |
317 | NAME (aout, reloc_name_lookup) (bfd *abfd ATTRIBUTE_UNUSED, | |
318 | const char *r_name) | |
319 | { | |
320 | unsigned int i; | |
321 | ||
322 | for (i = 0; | |
323 | i < sizeof (howto_table_pdp11) / sizeof (howto_table_pdp11[0]); | |
324 | i++) | |
325 | if (howto_table_pdp11[i].name != NULL | |
326 | && strcasecmp (howto_table_pdp11[i].name, r_name) == 0) | |
327 | return &howto_table_pdp11[i]; | |
328 | ||
329 | return NULL; | |
330 | } | |
331 | ||
a975c88e SC |
332 | /* Disambiguate conflicts between normal symbol types and .stab symbol types |
333 | (undefined externals N_UNDF+N_EXT vs. global variables N_GYSM and external | |
334 | bss symbols N_BSS+N_EXT vs. function names N_FUN) with a hack to look for | |
335 | the ':' in the global variable or function name string. */ | |
336 | ||
337 | static int | |
338 | is_stab (int type, const char *name) | |
339 | { | |
340 | if (type == N_GSYM || type == N_FUN) | |
f0aa3025 AM |
341 | return strchr (name, ':') != NULL; |
342 | return type > N_FUN; | |
a975c88e SC |
343 | } |
344 | ||
e135f41b | 345 | static int |
116c20d2 | 346 | pdp11_aout_write_headers (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
347 | { |
348 | struct external_exec exec_bytes; | |
e135f41b NC |
349 | |
350 | if (adata(abfd).magic == undecided_magic) | |
3a8c4a5b | 351 | NAME (aout, adjust_sizes_and_vmas) (abfd); |
e135f41b NC |
352 | |
353 | execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; | |
354 | execp->a_entry = bfd_get_start_address (abfd); | |
355 | ||
116c20d2 NC |
356 | if (obj_textsec (abfd)->reloc_count > 0 |
357 | || obj_datasec (abfd)->reloc_count > 0) | |
e135f41b NC |
358 | { |
359 | execp->a_trsize = execp->a_text; | |
360 | execp->a_drsize = execp->a_data; | |
361 | } | |
362 | else | |
363 | { | |
364 | execp->a_trsize = 0; | |
365 | execp->a_drsize = 0; | |
366 | } | |
367 | ||
116c20d2 | 368 | NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); |
e135f41b NC |
369 | |
370 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) | |
0a1b45a2 | 371 | return false; |
e135f41b | 372 | |
116c20d2 | 373 | if (bfd_bwrite ((void *) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, abfd) |
e135f41b | 374 | != EXEC_BYTES_SIZE) |
0a1b45a2 | 375 | return false; |
e135f41b | 376 | |
116c20d2 NC |
377 | /* Now write out reloc info, followed by syms and strings. */ |
378 | if (bfd_get_outsymbols (abfd) != NULL | |
e135f41b NC |
379 | && bfd_get_symcount (abfd) != 0) |
380 | { | |
bbb1afc8 | 381 | if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (execp)), SEEK_SET) != 0) |
0a1b45a2 | 382 | return false; |
e135f41b | 383 | |
116c20d2 | 384 | if (! NAME (aout, write_syms) (abfd)) |
0a1b45a2 | 385 | return false; |
e135f41b NC |
386 | } |
387 | ||
116c20d2 NC |
388 | if (obj_textsec (abfd)->reloc_count > 0 |
389 | || obj_datasec (abfd)->reloc_count > 0) | |
e135f41b | 390 | { |
bbb1afc8 | 391 | if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (execp)), SEEK_SET) != 0 |
116c20d2 | 392 | || !NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd)) |
bbb1afc8 | 393 | || bfd_seek (abfd, (file_ptr) (N_DRELOFF (execp)), SEEK_SET) != 0 |
68ffbac6 | 394 | || !NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) |
0a1b45a2 | 395 | return false; |
e135f41b NC |
396 | } |
397 | ||
0a1b45a2 | 398 | return true; |
dc810e39 | 399 | } |
e135f41b NC |
400 | |
401 | /* Write an object file. | |
402 | Section contents have already been written. We write the | |
403 | file header, symbols, and relocation. */ | |
404 | ||
0a1b45a2 | 405 | static bool |
116c20d2 | 406 | MY(write_object_contents) (bfd *abfd) |
e135f41b NC |
407 | { |
408 | struct internal_exec *execp = exec_hdr (abfd); | |
409 | ||
410 | /* We must make certain that the magic number has been set. This | |
411 | will normally have been done by set_section_contents, but only if | |
412 | there actually are some section contents. */ | |
413 | if (! abfd->output_has_begun) | |
3a8c4a5b | 414 | NAME (aout, adjust_sizes_and_vmas) (abfd); |
e135f41b NC |
415 | |
416 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
417 | ||
116c20d2 | 418 | return WRITE_HEADERS (abfd, execp); |
e135f41b NC |
419 | } |
420 | ||
116c20d2 NC |
421 | /* Swap the information in an executable header @var{raw_bytes} taken |
422 | from a raw byte stream memory image into the internal exec header | |
423 | structure "execp". */ | |
e135f41b NC |
424 | |
425 | #ifndef NAME_swap_exec_header_in | |
426 | void | |
116c20d2 NC |
427 | NAME (aout, swap_exec_header_in) (bfd *abfd, |
428 | struct external_exec *bytes, | |
429 | struct internal_exec *execp) | |
e135f41b | 430 | { |
e135f41b NC |
431 | /* The internal_exec structure has some fields that are unused in this |
432 | configuration (IE for i960), so ensure that all such uninitialized | |
433 | fields are zero'd out. There are places where two of these structs | |
116c20d2 NC |
434 | are memcmp'd, and thus the contents do matter. */ |
435 | memset ((void *) execp, 0, sizeof (struct internal_exec)); | |
e135f41b NC |
436 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
437 | execp->a_info = GET_MAGIC (abfd, bytes->e_info); | |
438 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
439 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
440 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
441 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
442 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
443 | ||
444 | if (GET_WORD (abfd, bytes->e_flag) & A_FLAG_RELOC_STRIPPED) | |
445 | { | |
446 | execp->a_trsize = 0; | |
447 | execp->a_drsize = 0; | |
448 | } | |
449 | else | |
450 | { | |
451 | execp->a_trsize = execp->a_text; | |
452 | execp->a_drsize = execp->a_data; | |
453 | } | |
454 | } | |
116c20d2 | 455 | #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in) |
e135f41b NC |
456 | #endif |
457 | ||
116c20d2 NC |
458 | /* Swap the information in an internal exec header structure |
459 | "execp" into the buffer "bytes" ready for writing to disk. */ | |
e135f41b | 460 | void |
116c20d2 NC |
461 | NAME (aout, swap_exec_header_out) (bfd *abfd, |
462 | struct internal_exec *execp, | |
463 | struct external_exec *bytes) | |
e135f41b | 464 | { |
116c20d2 | 465 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ |
e135f41b NC |
466 | PUT_MAGIC (abfd, execp->a_info, bytes->e_info); |
467 | PUT_WORD (abfd, execp->a_text, bytes->e_text); | |
468 | PUT_WORD (abfd, execp->a_data, bytes->e_data); | |
469 | PUT_WORD (abfd, execp->a_bss, bytes->e_bss); | |
470 | PUT_WORD (abfd, execp->a_syms, bytes->e_syms); | |
471 | PUT_WORD (abfd, execp->a_entry, bytes->e_entry); | |
472 | PUT_WORD (abfd, 0, bytes->e_unused); | |
473 | ||
116c20d2 NC |
474 | if ((execp->a_trsize == 0 || execp->a_text == 0) |
475 | && (execp->a_drsize == 0 || execp->a_data == 0)) | |
476 | PUT_WORD (abfd, A_FLAG_RELOC_STRIPPED, bytes->e_flag); | |
477 | else if (execp->a_trsize == execp->a_text | |
478 | && execp->a_drsize == execp->a_data) | |
479 | PUT_WORD (abfd, 0, bytes->e_flag); | |
e135f41b NC |
480 | else |
481 | { | |
116c20d2 | 482 | /* TODO: print a proper warning message. */ |
e135f41b NC |
483 | fprintf (stderr, "BFD:%s:%d: internal error\n", __FILE__, __LINE__); |
484 | PUT_WORD (abfd, 0, bytes->e_flag); | |
485 | } | |
486 | } | |
487 | ||
488 | /* Make all the section for an a.out file. */ | |
489 | ||
0a1b45a2 | 490 | bool |
116c20d2 | 491 | NAME (aout, make_sections) (bfd *abfd) |
e135f41b | 492 | { |
116c20d2 | 493 | if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL) |
0a1b45a2 | 494 | return false; |
116c20d2 | 495 | if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL) |
0a1b45a2 | 496 | return false; |
116c20d2 | 497 | if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL) |
0a1b45a2 AM |
498 | return false; |
499 | return true; | |
e135f41b NC |
500 | } |
501 | ||
116c20d2 NC |
502 | /* Some a.out variant thinks that the file open in ABFD |
503 | checking is an a.out file. Do some more checking, and set up | |
504 | for access if it really is. Call back to the calling | |
505 | environment's "finish up" function just before returning, to | |
506 | handle any last-minute setup. */ | |
e135f41b | 507 | |
cb001c0d | 508 | bfd_cleanup |
116c20d2 NC |
509 | NAME (aout, some_aout_object_p) (bfd *abfd, |
510 | struct internal_exec *execp, | |
cb001c0d | 511 | bfd_cleanup (*callback_to_real_object_p) (bfd *)) |
e135f41b NC |
512 | { |
513 | struct aout_data_struct *rawptr, *oldrawptr; | |
cb001c0d | 514 | bfd_cleanup cleanup; |
986f0783 | 515 | size_t amt = sizeof (struct aout_data_struct); |
e135f41b | 516 | |
116c20d2 | 517 | rawptr = bfd_zalloc (abfd, amt); |
e135f41b NC |
518 | if (rawptr == NULL) |
519 | return 0; | |
520 | ||
521 | oldrawptr = abfd->tdata.aout_data; | |
522 | abfd->tdata.aout_data = rawptr; | |
523 | ||
dc12032b | 524 | /* Copy the contents of the old tdata struct. */ |
e135f41b NC |
525 | if (oldrawptr != NULL) |
526 | *abfd->tdata.aout_data = *oldrawptr; | |
527 | ||
528 | abfd->tdata.aout_data->a.hdr = &rawptr->e; | |
116c20d2 | 529 | *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct. */ |
e135f41b NC |
530 | execp = abfd->tdata.aout_data->a.hdr; |
531 | ||
116c20d2 | 532 | /* Set the file flags. */ |
e135f41b NC |
533 | abfd->flags = BFD_NO_FLAGS; |
534 | if (execp->a_drsize || execp->a_trsize) | |
535 | abfd->flags |= HAS_RELOC; | |
116c20d2 | 536 | /* Setting of EXEC_P has been deferred to the bottom of this function. */ |
e135f41b NC |
537 | if (execp->a_syms) |
538 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
bbb1afc8 | 539 | if (N_DYNAMIC (execp)) |
e135f41b NC |
540 | abfd->flags |= DYNAMIC; |
541 | ||
bbb1afc8 | 542 | if (N_MAGIC (execp) == ZMAGIC) |
e135f41b NC |
543 | { |
544 | abfd->flags |= D_PAGED | WP_TEXT; | |
545 | adata (abfd).magic = z_magic; | |
546 | } | |
bbb1afc8 | 547 | else if (N_MAGIC (execp) == NMAGIC) |
e135f41b NC |
548 | { |
549 | abfd->flags |= WP_TEXT; | |
550 | adata (abfd).magic = n_magic; | |
551 | } | |
bbb1afc8 | 552 | else if (N_MAGIC (execp) == OMAGIC) |
e135f41b | 553 | adata (abfd).magic = o_magic; |
fa1477dc SC |
554 | else if (N_MAGIC (execp) == IMAGIC) |
555 | adata (abfd).magic = i_magic; | |
e135f41b NC |
556 | else |
557 | { | |
558 | /* Should have been checked with N_BADMAG before this routine | |
559 | was called. */ | |
560 | abort (); | |
561 | } | |
562 | ||
ed48ec2e | 563 | abfd->start_address = execp->a_entry; |
e135f41b | 564 | |
116c20d2 | 565 | obj_aout_symbols (abfd) = NULL; |
ed48ec2e | 566 | abfd->symcount = execp->a_syms / sizeof (struct external_nlist); |
e135f41b NC |
567 | |
568 | /* The default relocation entry size is that of traditional V7 Unix. */ | |
569 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
570 | ||
116c20d2 | 571 | /* The default symbol entry size is that of traditional Unix. */ |
e135f41b NC |
572 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; |
573 | ||
574 | #ifdef USE_MMAP | |
575 | bfd_init_window (&obj_aout_sym_window (abfd)); | |
576 | bfd_init_window (&obj_aout_string_window (abfd)); | |
577 | #endif | |
116c20d2 | 578 | |
e135f41b NC |
579 | obj_aout_external_syms (abfd) = NULL; |
580 | obj_aout_external_strings (abfd) = NULL; | |
581 | obj_aout_sym_hashes (abfd) = NULL; | |
582 | ||
116c20d2 | 583 | if (! NAME (aout, make_sections) (abfd)) |
e135f41b NC |
584 | return NULL; |
585 | ||
eea6121a AM |
586 | obj_datasec (abfd)->size = execp->a_data; |
587 | obj_bsssec (abfd)->size = execp->a_bss; | |
e135f41b NC |
588 | |
589 | obj_textsec (abfd)->flags = | |
590 | (execp->a_trsize != 0 | |
591 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) | |
592 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
593 | obj_datasec (abfd)->flags = | |
594 | (execp->a_drsize != 0 | |
595 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) | |
596 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
597 | obj_bsssec (abfd)->flags = SEC_ALLOC; | |
598 | ||
599 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
600 | /* The common code can't fill in these things because they depend | |
601 | on either the start address of the text segment, the rounding | |
602 | up of virtual addresses between segments, or the starting file | |
603 | position of the text segment -- all of which varies among different | |
604 | versions of a.out. */ | |
605 | ||
606 | /* Call back to the format-dependent code to fill in the rest of the | |
607 | fields and do any further cleanup. Things that should be filled | |
608 | in by the callback: */ | |
e135f41b NC |
609 | struct exec *execp = exec_hdr (abfd); |
610 | ||
bbb1afc8 | 611 | obj_textsec (abfd)->size = N_TXTSIZE (execp); |
116c20d2 | 612 | /* Data and bss are already filled in since they're so standard. */ |
e135f41b | 613 | |
116c20d2 | 614 | /* The virtual memory addresses of the sections. */ |
bbb1afc8 AM |
615 | obj_textsec (abfd)->vma = N_TXTADDR (execp); |
616 | obj_datasec (abfd)->vma = N_DATADDR (execp); | |
617 | obj_bsssec (abfd)->vma = N_BSSADDR (execp); | |
e135f41b | 618 | |
116c20d2 | 619 | /* The file offsets of the sections. */ |
bbb1afc8 AM |
620 | obj_textsec (abfd)->filepos = N_TXTOFF (execp); |
621 | obj_datasec (abfd)->filepos = N_DATOFF (execp); | |
e135f41b | 622 | |
116c20d2 | 623 | /* The file offsets of the relocation info. */ |
bbb1afc8 AM |
624 | obj_textsec (abfd)->rel_filepos = N_TRELOFF (execp); |
625 | obj_datasec (abfd)->rel_filepos = N_DRELOFF (execp); | |
e135f41b NC |
626 | |
627 | /* The file offsets of the string table and symbol table. */ | |
bbb1afc8 AM |
628 | obj_str_filepos (abfd) = N_STROFF (execp); |
629 | obj_sym_filepos (abfd) = N_SYMOFF (execp); | |
e135f41b NC |
630 | |
631 | /* Determine the architecture and machine type of the object file. */ | |
632 | abfd->obj_arch = bfd_arch_obscure; | |
633 | ||
634 | adata(abfd)->page_size = TARGET_PAGE_SIZE; | |
635 | adata(abfd)->segment_size = SEGMENT_SIZE; | |
636 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
637 | ||
cb001c0d | 638 | return _bfd_no_cleanup; |
e135f41b NC |
639 | |
640 | /* The architecture is encoded in various ways in various a.out variants, | |
641 | or is not encoded at all in some of them. The relocation size depends | |
642 | on the architecture and the a.out variant. Finally, the return value | |
643 | is the bfd_target vector in use. If an error occurs, return zero and | |
644 | set bfd_error to the appropriate error code. | |
645 | ||
646 | Formats such as b.out, which have additional fields in the a.out | |
647 | header, should cope with them in this callback as well. */ | |
116c20d2 | 648 | #endif /* DOCUMENTATION */ |
e135f41b | 649 | |
cb001c0d | 650 | cleanup = (*callback_to_real_object_p)(abfd); |
e135f41b NC |
651 | |
652 | /* Now that the segment addresses have been worked out, take a better | |
653 | guess at whether the file is executable. If the entry point | |
654 | is within the text segment, assume it is. (This makes files | |
655 | executable even if their entry point address is 0, as long as | |
656 | their text starts at zero.). | |
657 | ||
658 | This test had to be changed to deal with systems where the text segment | |
659 | runs at a different location than the default. The problem is that the | |
660 | entry address can appear to be outside the text segment, thus causing an | |
661 | erroneous conclusion that the file isn't executable. | |
662 | ||
663 | To fix this, we now accept any non-zero entry point as an indication of | |
664 | executability. This will work most of the time, since only the linker | |
665 | sets the entry point, and that is likely to be non-zero for most systems. */ | |
666 | ||
667 | if (execp->a_entry != 0 | |
31af1e68 SC |
668 | || (execp->a_entry >= obj_textsec (abfd)->vma |
669 | && execp->a_entry < (obj_textsec (abfd)->vma | |
670 | + obj_textsec (abfd)->size) | |
671 | && execp->a_trsize == 0 | |
672 | && execp->a_drsize == 0)) | |
e135f41b NC |
673 | abfd->flags |= EXEC_P; |
674 | #ifdef STAT_FOR_EXEC | |
675 | else | |
676 | { | |
677 | struct stat stat_buf; | |
678 | ||
679 | /* The original heuristic doesn't work in some important cases. | |
07d6d2b8 AM |
680 | The a.out file has no information about the text start |
681 | address. For files (like kernels) linked to non-standard | |
682 | addresses (ld -Ttext nnn) the entry point may not be between | |
683 | the default text start (obj_textsec(abfd)->vma) and | |
684 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
685 | issue. Many kernels are loaded at non standard addresses. */ | |
e135f41b NC |
686 | if (abfd->iostream != NULL |
687 | && (abfd->flags & BFD_IN_MEMORY) == 0 | |
688 | && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0) | |
689 | && ((stat_buf.st_mode & 0111) != 0)) | |
690 | abfd->flags |= EXEC_P; | |
691 | } | |
692 | #endif /* STAT_FOR_EXEC */ | |
693 | ||
cb001c0d | 694 | if (!cleanup) |
e135f41b NC |
695 | { |
696 | free (rawptr); | |
697 | abfd->tdata.aout_data = oldrawptr; | |
698 | } | |
cb001c0d | 699 | return cleanup; |
e135f41b NC |
700 | } |
701 | ||
116c20d2 | 702 | /* Initialize ABFD for use with a.out files. */ |
e135f41b | 703 | |
0a1b45a2 | 704 | bool |
116c20d2 | 705 | NAME (aout, mkobject) (bfd *abfd) |
e135f41b NC |
706 | { |
707 | struct aout_data_struct *rawptr; | |
986f0783 | 708 | size_t amt = sizeof (struct aout_data_struct); |
e135f41b NC |
709 | |
710 | bfd_set_error (bfd_error_system_call); | |
711 | ||
116c20d2 NC |
712 | /* Use an intermediate variable for clarity. */ |
713 | rawptr = bfd_zalloc (abfd, amt); | |
e135f41b NC |
714 | |
715 | if (rawptr == NULL) | |
0a1b45a2 | 716 | return false; |
e135f41b NC |
717 | |
718 | abfd->tdata.aout_data = rawptr; | |
719 | exec_hdr (abfd) = &(rawptr->e); | |
720 | ||
116c20d2 NC |
721 | obj_textsec (abfd) = NULL; |
722 | obj_datasec (abfd) = NULL; | |
723 | obj_bsssec (abfd) = NULL; | |
e135f41b | 724 | |
0a1b45a2 | 725 | return true; |
e135f41b NC |
726 | } |
727 | ||
116c20d2 NC |
728 | /* Keep track of machine architecture and machine type for |
729 | a.out's. Return the <<machine_type>> for a particular | |
730 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
731 | and machine can't be represented in a.out format. | |
e135f41b | 732 | |
116c20d2 NC |
733 | If the architecture is understood, machine type 0 (default) |
734 | is always understood. */ | |
e135f41b NC |
735 | |
736 | enum machine_type | |
116c20d2 NC |
737 | NAME (aout, machine_type) (enum bfd_architecture arch, |
738 | unsigned long machine, | |
0a1b45a2 | 739 | bool *unknown) |
e135f41b NC |
740 | { |
741 | enum machine_type arch_flags; | |
742 | ||
743 | arch_flags = M_UNKNOWN; | |
0a1b45a2 | 744 | *unknown = true; |
e135f41b NC |
745 | |
746 | switch (arch) | |
747 | { | |
748 | case bfd_arch_sparc: | |
749 | if (machine == 0 | |
750 | || machine == bfd_mach_sparc | |
751 | || machine == bfd_mach_sparc_sparclite | |
752 | || machine == bfd_mach_sparc_v9) | |
753 | arch_flags = M_SPARC; | |
754 | else if (machine == bfd_mach_sparc_sparclet) | |
755 | arch_flags = M_SPARCLET; | |
756 | break; | |
757 | ||
e135f41b | 758 | case bfd_arch_i386: |
250d94fd AM |
759 | if (machine == 0 |
760 | || machine == bfd_mach_i386_i386 | |
761 | || machine == bfd_mach_i386_i386_intel_syntax) | |
762 | arch_flags = M_386; | |
e135f41b NC |
763 | break; |
764 | ||
e135f41b NC |
765 | case bfd_arch_arm: |
766 | if (machine == 0) arch_flags = M_ARM; | |
767 | break; | |
768 | ||
769 | case bfd_arch_mips: | |
770 | switch (machine) | |
771 | { | |
772 | case 0: | |
773 | case 2000: | |
774 | case bfd_mach_mips3000: | |
07d6d2b8 | 775 | arch_flags = M_MIPS1; |
e135f41b | 776 | break; |
116c20d2 | 777 | case bfd_mach_mips4000: /* MIPS3 */ |
e135f41b | 778 | case bfd_mach_mips4400: |
116c20d2 NC |
779 | case bfd_mach_mips8000: /* MIPS4 */ |
780 | case bfd_mach_mips6000: /* Real MIPS2: */ | |
07d6d2b8 | 781 | arch_flags = M_MIPS2; |
e135f41b NC |
782 | break; |
783 | default: | |
784 | arch_flags = M_UNKNOWN; | |
785 | break; | |
786 | } | |
787 | break; | |
788 | ||
789 | case bfd_arch_ns32k: | |
790 | switch (machine) | |
791 | { | |
07d6d2b8 | 792 | case 0: arch_flags = M_NS32532; break; |
e135f41b NC |
793 | case 32032: arch_flags = M_NS32032; break; |
794 | case 32532: arch_flags = M_NS32532; break; | |
795 | default: arch_flags = M_UNKNOWN; break; | |
796 | } | |
797 | break; | |
798 | ||
799 | case bfd_arch_pdp11: | |
800 | /* TODO: arch_flags = M_PDP11; */ | |
0a1b45a2 | 801 | *unknown = false; |
e135f41b NC |
802 | break; |
803 | ||
804 | case bfd_arch_vax: | |
0a1b45a2 | 805 | *unknown = false; |
e135f41b | 806 | break; |
dc810e39 | 807 | |
e135f41b NC |
808 | default: |
809 | arch_flags = M_UNKNOWN; | |
810 | } | |
811 | ||
812 | if (arch_flags != M_UNKNOWN) | |
0a1b45a2 | 813 | *unknown = false; |
e135f41b NC |
814 | |
815 | return arch_flags; | |
816 | } | |
817 | ||
116c20d2 NC |
818 | /* Set the architecture and the machine of the ABFD to the |
819 | values ARCH and MACHINE. Verify that @ABFD's format | |
820 | can support the architecture required. */ | |
e135f41b | 821 | |
0a1b45a2 | 822 | bool |
116c20d2 NC |
823 | NAME (aout, set_arch_mach) (bfd *abfd, |
824 | enum bfd_architecture arch, | |
825 | unsigned long machine) | |
e135f41b NC |
826 | { |
827 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) | |
0a1b45a2 | 828 | return false; |
e135f41b NC |
829 | |
830 | if (arch != bfd_arch_unknown) | |
831 | { | |
0a1b45a2 | 832 | bool unknown; |
e135f41b | 833 | |
116c20d2 | 834 | NAME (aout, machine_type) (arch, machine, &unknown); |
e135f41b | 835 | if (unknown) |
0a1b45a2 | 836 | return false; |
e135f41b NC |
837 | } |
838 | ||
839 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
840 | ||
841 | return (*aout_backend_info(abfd)->set_sizes) (abfd); | |
842 | } | |
843 | ||
844 | static void | |
116c20d2 | 845 | adjust_o_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
846 | { |
847 | file_ptr pos = adata (abfd).exec_bytes_size; | |
848 | bfd_vma vma = 0; | |
849 | int pad = 0; | |
dda2980f AM |
850 | asection *text = obj_textsec (abfd); |
851 | asection *data = obj_datasec (abfd); | |
852 | asection *bss = obj_bsssec (abfd); | |
e135f41b NC |
853 | |
854 | /* Text. */ | |
dda2980f AM |
855 | text->filepos = pos; |
856 | if (!text->user_set_vma) | |
857 | text->vma = vma; | |
e135f41b | 858 | else |
dda2980f | 859 | vma = text->vma; |
e135f41b | 860 | |
dda2980f AM |
861 | pos += execp->a_text; |
862 | vma += execp->a_text; | |
e135f41b NC |
863 | |
864 | /* Data. */ | |
dda2980f | 865 | if (!data->user_set_vma) |
e135f41b | 866 | { |
e135f41b NC |
867 | pos += pad; |
868 | vma += pad; | |
dda2980f | 869 | data->vma = vma; |
e135f41b NC |
870 | } |
871 | else | |
dda2980f AM |
872 | vma = data->vma; |
873 | execp->a_text += pad; | |
874 | ||
875 | data->filepos = pos; | |
876 | pos += data->size; | |
877 | vma += data->size; | |
e135f41b NC |
878 | |
879 | /* BSS. */ | |
dda2980f | 880 | if (!bss->user_set_vma) |
e135f41b | 881 | { |
e135f41b NC |
882 | pos += pad; |
883 | vma += pad; | |
dda2980f | 884 | bss->vma = vma; |
e135f41b | 885 | } |
fa1477dc | 886 | else if (data->size > 0 || bss->size > 0) /* PR25677: for objcopy --extract-symbol */ |
e135f41b | 887 | { |
08da05b0 | 888 | /* The VMA of the .bss section is set by the VMA of the |
07d6d2b8 AM |
889 | .data section plus the size of the .data section. We may |
890 | need to add padding bytes to make this true. */ | |
dda2980f AM |
891 | pad = bss->vma - vma; |
892 | if (pad < 0) | |
893 | pad = 0; | |
894 | pos += pad; | |
e135f41b | 895 | } |
dda2980f AM |
896 | execp->a_data = data->size + pad; |
897 | bss->filepos = pos; | |
898 | execp->a_bss = bss->size; | |
e135f41b | 899 | |
bbb1afc8 | 900 | N_SET_MAGIC (execp, OMAGIC); |
e135f41b NC |
901 | } |
902 | ||
903 | static void | |
116c20d2 | 904 | adjust_z_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
905 | { |
906 | bfd_size_type data_pad, text_pad; | |
907 | file_ptr text_end; | |
dc810e39 | 908 | const struct aout_backend_data *abdp; |
dda2980f | 909 | /* TRUE if text includes exec header. */ |
0a1b45a2 | 910 | bool ztih; |
dda2980f AM |
911 | asection *text = obj_textsec (abfd); |
912 | asection *data = obj_datasec (abfd); | |
913 | asection *bss = obj_bsssec (abfd); | |
dc810e39 | 914 | |
e135f41b NC |
915 | abdp = aout_backend_info (abfd); |
916 | ||
917 | /* Text. */ | |
918 | ztih = (abdp != NULL | |
919 | && (abdp->text_includes_header | |
920 | || obj_aout_subformat (abfd) == q_magic_format)); | |
dda2980f AM |
921 | text->filepos = (ztih |
922 | ? adata (abfd).exec_bytes_size | |
923 | : adata (abfd).zmagic_disk_block_size); | |
924 | if (!text->user_set_vma) | |
e135f41b NC |
925 | { |
926 | /* ?? Do we really need to check for relocs here? */ | |
dda2980f AM |
927 | text->vma = ((abfd->flags & HAS_RELOC) |
928 | ? 0 | |
929 | : (ztih | |
930 | ? abdp->default_text_vma + adata (abfd).exec_bytes_size | |
931 | : abdp->default_text_vma)); | |
e135f41b NC |
932 | text_pad = 0; |
933 | } | |
934 | else | |
935 | { | |
936 | /* The .text section is being loaded at an unusual address. We | |
07d6d2b8 AM |
937 | may need to pad it such that the .data section starts at a page |
938 | boundary. */ | |
e135f41b | 939 | if (ztih) |
dda2980f | 940 | text_pad = ((text->filepos - text->vma) |
e135f41b NC |
941 | & (adata (abfd).page_size - 1)); |
942 | else | |
dda2980f | 943 | text_pad = (-text->vma |
e135f41b NC |
944 | & (adata (abfd).page_size - 1)); |
945 | } | |
946 | ||
947 | /* Find start of data. */ | |
948 | if (ztih) | |
949 | { | |
dda2980f | 950 | text_end = text->filepos + execp->a_text; |
e135f41b NC |
951 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
952 | } | |
953 | else | |
954 | { | |
955 | /* Note that if page_size == zmagic_disk_block_size, then | |
956 | filepos == page_size, and this case is the same as the ztih | |
957 | case. */ | |
dda2980f | 958 | text_end = execp->a_text; |
e135f41b | 959 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
dda2980f | 960 | text_end += text->filepos; |
e135f41b | 961 | } |
dda2980f | 962 | execp->a_text += text_pad; |
e135f41b NC |
963 | |
964 | /* Data. */ | |
dda2980f | 965 | if (!data->user_set_vma) |
e135f41b NC |
966 | { |
967 | bfd_vma vma; | |
dda2980f AM |
968 | vma = text->vma + execp->a_text; |
969 | data->vma = BFD_ALIGN (vma, adata (abfd).segment_size); | |
e135f41b NC |
970 | } |
971 | if (abdp && abdp->zmagic_mapped_contiguous) | |
972 | { | |
dda2980f AM |
973 | text_pad = data->vma - (text->vma + execp->a_text); |
974 | /* Only pad the text section if the data | |
975 | section is going to be placed after it. */ | |
976 | if (text_pad > 0) | |
977 | execp->a_text += text_pad; | |
e135f41b | 978 | } |
dda2980f | 979 | data->filepos = text->filepos + execp->a_text; |
dc810e39 | 980 | |
e135f41b | 981 | /* Fix up exec header while we're at it. */ |
e135f41b | 982 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
dda2980f | 983 | execp->a_text += adata (abfd).exec_bytes_size; |
bbb1afc8 | 984 | N_SET_MAGIC (execp, ZMAGIC); |
e135f41b NC |
985 | |
986 | /* Spec says data section should be rounded up to page boundary. */ | |
dda2980f AM |
987 | execp->a_data = align_power (data->size, bss->alignment_power); |
988 | execp->a_data = BFD_ALIGN (execp->a_data, adata (abfd).page_size); | |
989 | data_pad = execp->a_data - data->size; | |
e135f41b NC |
990 | |
991 | /* BSS. */ | |
dda2980f AM |
992 | if (!bss->user_set_vma) |
993 | bss->vma = data->vma + execp->a_data; | |
e135f41b NC |
994 | /* If the BSS immediately follows the data section and extra space |
995 | in the page is left after the data section, fudge data | |
996 | in the header so that the bss section looks smaller by that | |
997 | amount. We'll start the bss section there, and lie to the OS. | |
998 | (Note that a linker script, as well as the above assignment, | |
999 | could have explicitly set the BSS vma to immediately follow | |
1000 | the data section.) */ | |
dda2980f AM |
1001 | if (align_power (bss->vma, bss->alignment_power) == data->vma + execp->a_data) |
1002 | execp->a_bss = data_pad > bss->size ? 0 : bss->size - data_pad; | |
e135f41b | 1003 | else |
dda2980f | 1004 | execp->a_bss = bss->size; |
e135f41b NC |
1005 | } |
1006 | ||
1007 | static void | |
116c20d2 | 1008 | adjust_n_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b | 1009 | { |
dda2980f | 1010 | file_ptr pos = adata (abfd).exec_bytes_size; |
e135f41b NC |
1011 | bfd_vma vma = 0; |
1012 | int pad; | |
dda2980f AM |
1013 | asection *text = obj_textsec (abfd); |
1014 | asection *data = obj_datasec (abfd); | |
1015 | asection *bss = obj_bsssec (abfd); | |
dc810e39 | 1016 | |
e135f41b | 1017 | /* Text. */ |
dda2980f AM |
1018 | text->filepos = pos; |
1019 | if (!text->user_set_vma) | |
1020 | text->vma = vma; | |
e135f41b | 1021 | else |
dda2980f AM |
1022 | vma = text->vma; |
1023 | pos += execp->a_text; | |
1024 | vma += execp->a_text; | |
e135f41b NC |
1025 | |
1026 | /* Data. */ | |
dda2980f AM |
1027 | data->filepos = pos; |
1028 | if (!data->user_set_vma) | |
1029 | data->vma = BFD_ALIGN (vma, adata (abfd).segment_size); | |
1030 | vma = data->vma; | |
dc810e39 | 1031 | |
e135f41b | 1032 | /* Since BSS follows data immediately, see if it needs alignment. */ |
dda2980f AM |
1033 | vma += data->size; |
1034 | pad = align_power (vma, bss->alignment_power) - vma; | |
1035 | execp->a_data = data->size + pad; | |
1036 | pos += execp->a_data; | |
e135f41b NC |
1037 | |
1038 | /* BSS. */ | |
dda2980f AM |
1039 | if (!bss->user_set_vma) |
1040 | bss->vma = vma; | |
e135f41b | 1041 | else |
dda2980f | 1042 | vma = bss->vma; |
e135f41b NC |
1043 | |
1044 | /* Fix up exec header. */ | |
dda2980f | 1045 | execp->a_bss = bss->size; |
bbb1afc8 | 1046 | N_SET_MAGIC (execp, NMAGIC); |
e135f41b NC |
1047 | } |
1048 | ||
fa1477dc SC |
1049 | static void |
1050 | adjust_i_magic (bfd *abfd, struct internal_exec *execp) | |
1051 | { | |
1052 | file_ptr pos = adata (abfd).exec_bytes_size; | |
1053 | bfd_vma vma = 0; | |
1054 | int pad; | |
1055 | asection *text = obj_textsec (abfd); | |
1056 | asection *data = obj_datasec (abfd); | |
1057 | asection *bss = obj_bsssec (abfd); | |
1058 | ||
1059 | /* Text. */ | |
1060 | text->filepos = pos; | |
1061 | if (!text->user_set_vma) | |
1062 | text->vma = vma; | |
1063 | else | |
1064 | vma = text->vma; | |
1065 | pos += execp->a_text; | |
1066 | ||
1067 | /* Data. */ | |
1068 | data->filepos = pos; | |
1069 | if (!data->user_set_vma) | |
1070 | data->vma = 0; | |
1071 | vma = data->vma; | |
1072 | ||
1073 | /* Since BSS follows data immediately, see if it needs alignment. */ | |
1074 | vma += data->size; | |
1075 | pad = align_power (vma, bss->alignment_power) - vma; | |
1076 | execp->a_data = data->size + pad; | |
1077 | pos += execp->a_data; | |
1078 | ||
1079 | /* BSS. */ | |
1080 | if (!bss->user_set_vma) | |
1081 | bss->vma = vma; | |
1082 | else | |
1083 | vma = bss->vma; | |
1084 | ||
1085 | /* Fix up exec header. */ | |
1086 | execp->a_bss = bss->size; | |
1087 | N_SET_MAGIC (execp, IMAGIC); | |
1088 | } | |
1089 | ||
0a1b45a2 | 1090 | bool |
3a8c4a5b | 1091 | NAME (aout, adjust_sizes_and_vmas) (bfd *abfd) |
e135f41b NC |
1092 | { |
1093 | struct internal_exec *execp = exec_hdr (abfd); | |
1094 | ||
116c20d2 | 1095 | if (! NAME (aout, make_sections) (abfd)) |
0a1b45a2 | 1096 | return false; |
e135f41b | 1097 | |
dda2980f | 1098 | if (adata (abfd).magic != undecided_magic) |
0a1b45a2 | 1099 | return true; |
e135f41b | 1100 | |
dda2980f AM |
1101 | execp->a_text = align_power (obj_textsec (abfd)->size, |
1102 | obj_textsec (abfd)->alignment_power); | |
e135f41b | 1103 | |
e135f41b NC |
1104 | /* Rule (heuristic) for when to pad to a new page. Note that there |
1105 | are (at least) two ways demand-paged (ZMAGIC) files have been | |
1106 | handled. Most Berkeley-based systems start the text segment at | |
1107 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text | |
1108 | segment right after the exec header; the latter is counted in the | |
1109 | text segment size, and is paged in by the kernel with the rest of | |
dda2980f | 1110 | the text. */ |
e135f41b NC |
1111 | |
1112 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1113 | to understand enough to implement it. Better would probably be to go | |
1114 | right from BFD flags to alignment/positioning characteristics. But the | |
1115 | old code was sloppy enough about handling the flags, and had enough | |
1116 | other magic, that it was a little hard for me to understand. I think | |
1117 | I understand it better now, but I haven't time to do the cleanup this | |
1118 | minute. */ | |
1119 | ||
fa1477dc SC |
1120 | if (separate_i_d) |
1121 | adata (abfd).magic = i_magic; | |
1122 | else if (abfd->flags & WP_TEXT) | |
dda2980f | 1123 | adata (abfd).magic = n_magic; |
e135f41b | 1124 | else |
dda2980f | 1125 | adata (abfd).magic = o_magic; |
e135f41b NC |
1126 | |
1127 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1128 | #if __GNUC__ >= 2 | |
1129 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1130 | ({ char *str; | |
dda2980f AM |
1131 | switch (adata (abfd).magic) |
1132 | { | |
1133 | case n_magic: str = "NMAGIC"; break; | |
1134 | case o_magic: str = "OMAGIC"; break; | |
fa1477dc | 1135 | case i_magic: str = "IMAGIC"; break; |
dda2980f AM |
1136 | case z_magic: str = "ZMAGIC"; break; |
1137 | default: abort (); | |
1138 | } | |
e135f41b NC |
1139 | str; |
1140 | }), | |
dda2980f AM |
1141 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
1142 | obj_textsec (abfd)->alignment_power, | |
1143 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, | |
1144 | obj_datasec (abfd)->alignment_power, | |
1145 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size, | |
1146 | obj_bsssec (abfd)->alignment_power); | |
e135f41b NC |
1147 | #endif |
1148 | #endif | |
1149 | ||
dda2980f | 1150 | switch (adata (abfd).magic) |
e135f41b NC |
1151 | { |
1152 | case o_magic: | |
1153 | adjust_o_magic (abfd, execp); | |
1154 | break; | |
1155 | case z_magic: | |
1156 | adjust_z_magic (abfd, execp); | |
1157 | break; | |
1158 | case n_magic: | |
1159 | adjust_n_magic (abfd, execp); | |
1160 | break; | |
fa1477dc SC |
1161 | case i_magic: |
1162 | adjust_i_magic (abfd, execp); | |
1163 | break; | |
e135f41b NC |
1164 | default: |
1165 | abort (); | |
1166 | } | |
1167 | ||
1168 | #ifdef BFD_AOUT_DEBUG | |
1169 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
dda2980f AM |
1170 | obj_textsec (abfd)->vma, execp->a_text, |
1171 | obj_textsec (abfd)->filepos, | |
1172 | obj_datasec (abfd)->vma, execp->a_data, | |
1173 | obj_datasec (abfd)->filepos, | |
1174 | obj_bsssec (abfd)->vma, execp->a_bss); | |
e135f41b NC |
1175 | #endif |
1176 | ||
0a1b45a2 | 1177 | return true; |
e135f41b NC |
1178 | } |
1179 | ||
116c20d2 | 1180 | /* Called by the BFD in response to a bfd_make_section request. */ |
e135f41b | 1181 | |
0a1b45a2 | 1182 | bool |
116c20d2 | 1183 | NAME (aout, new_section_hook) (bfd *abfd, asection *newsect) |
e135f41b | 1184 | { |
116c20d2 | 1185 | /* Align to double at least. */ |
e135f41b NC |
1186 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; |
1187 | ||
e135f41b NC |
1188 | if (bfd_get_format (abfd) == bfd_object) |
1189 | { | |
1190 | if (obj_textsec (abfd) == NULL | |
f592407e | 1191 | && !strcmp (newsect->name, ".text")) |
e135f41b NC |
1192 | { |
1193 | obj_textsec(abfd)= newsect; | |
1194 | newsect->target_index = N_TEXT; | |
e135f41b | 1195 | } |
f592407e AM |
1196 | else if (obj_datasec (abfd) == NULL |
1197 | && !strcmp (newsect->name, ".data")) | |
1198 | { | |
1199 | obj_datasec (abfd) = newsect; | |
1200 | newsect->target_index = N_DATA; | |
1201 | } | |
1202 | else if (obj_bsssec (abfd) == NULL | |
1203 | && !strcmp (newsect->name, ".bss")) | |
1204 | { | |
1205 | obj_bsssec (abfd) = newsect; | |
1206 | newsect->target_index = N_BSS; | |
1207 | } | |
1208 | } | |
e135f41b | 1209 | |
116c20d2 | 1210 | /* We allow more than three sections internally. */ |
f592407e | 1211 | return _bfd_generic_new_section_hook (abfd, newsect); |
e135f41b NC |
1212 | } |
1213 | ||
0a1b45a2 | 1214 | bool |
116c20d2 NC |
1215 | NAME (aout, set_section_contents) (bfd *abfd, |
1216 | sec_ptr section, | |
1217 | const void * location, | |
1218 | file_ptr offset, | |
1219 | bfd_size_type count) | |
e135f41b | 1220 | { |
e135f41b NC |
1221 | if (! abfd->output_has_begun) |
1222 | { | |
3a8c4a5b | 1223 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
0a1b45a2 | 1224 | return false; |
e135f41b NC |
1225 | } |
1226 | ||
1227 | if (section == obj_bsssec (abfd)) | |
1228 | { | |
1229 | bfd_set_error (bfd_error_no_contents); | |
0a1b45a2 | 1230 | return false; |
e135f41b NC |
1231 | } |
1232 | ||
1233 | if (section != obj_textsec (abfd) | |
1234 | && section != obj_datasec (abfd)) | |
1235 | { | |
4eca0228 | 1236 | _bfd_error_handler |
695344c0 | 1237 | /* xgettext:c-format */ |
871b3ab2 | 1238 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
dae82561 | 1239 | abfd, section); |
e135f41b | 1240 | bfd_set_error (bfd_error_nonrepresentable_section); |
0a1b45a2 | 1241 | return false; |
e135f41b NC |
1242 | } |
1243 | ||
1244 | if (count != 0) | |
1245 | { | |
1246 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 1247 | || bfd_bwrite (location, count, abfd) != count) |
0a1b45a2 | 1248 | return false; |
e135f41b NC |
1249 | } |
1250 | ||
0a1b45a2 | 1251 | return true; |
e135f41b NC |
1252 | } |
1253 | \f | |
1254 | /* Read the external symbols from an a.out file. */ | |
1255 | ||
0a1b45a2 | 1256 | static bool |
116c20d2 | 1257 | aout_get_external_symbols (bfd *abfd) |
e135f41b | 1258 | { |
116c20d2 | 1259 | if (obj_aout_external_syms (abfd) == NULL) |
e135f41b NC |
1260 | { |
1261 | bfd_size_type count; | |
1262 | struct external_nlist *syms; | |
1263 | ||
1264 | count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; | |
1265 | ||
37e3922e NC |
1266 | /* PR 17512: file: 011f5a08. */ |
1267 | if (count == 0) | |
49987e5c NC |
1268 | { |
1269 | obj_aout_external_syms (abfd) = NULL; | |
1270 | obj_aout_external_sym_count (abfd) = count; | |
0a1b45a2 | 1271 | return true; |
49987e5c NC |
1272 | } |
1273 | ||
e135f41b | 1274 | #ifdef USE_MMAP |
82e51918 AM |
1275 | if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), |
1276 | exec_hdr (abfd)->a_syms, | |
0a1b45a2 AM |
1277 | &obj_aout_sym_window (abfd), true)) |
1278 | return false; | |
e135f41b NC |
1279 | syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; |
1280 | #else | |
1281 | /* We allocate using malloc to make the values easy to free | |
1282 | later on. If we put them on the objalloc it might not be | |
1283 | possible to free them. */ | |
2bb3687b | 1284 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
0a1b45a2 | 1285 | return false; |
2bb3687b AM |
1286 | syms = (struct external_nlist *) |
1287 | _bfd_malloc_and_read (abfd, count * EXTERNAL_NLIST_SIZE, | |
1288 | count * EXTERNAL_NLIST_SIZE); | |
31af1e68 | 1289 | if (syms == NULL) |
0a1b45a2 | 1290 | return false; |
e135f41b NC |
1291 | #endif |
1292 | ||
1293 | obj_aout_external_syms (abfd) = syms; | |
1294 | obj_aout_external_sym_count (abfd) = count; | |
1295 | } | |
dc810e39 | 1296 | |
e135f41b NC |
1297 | if (obj_aout_external_strings (abfd) == NULL |
1298 | && exec_hdr (abfd)->a_syms != 0) | |
1299 | { | |
1300 | unsigned char string_chars[BYTES_IN_LONG]; | |
1301 | bfd_size_type stringsize; | |
1302 | char *strings; | |
31af1e68 | 1303 | bfd_size_type amt = BYTES_IN_LONG; |
e135f41b NC |
1304 | |
1305 | /* Get the size of the strings. */ | |
1306 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
31af1e68 | 1307 | || bfd_bread ((void *) string_chars, amt, abfd) != amt) |
0a1b45a2 | 1308 | return false; |
dc810e39 | 1309 | stringsize = H_GET_32 (abfd, string_chars); |
31af1e68 SC |
1310 | if (stringsize == 0) |
1311 | stringsize = 1; | |
1312 | else if (stringsize < BYTES_IN_LONG | |
1313 | || (size_t) stringsize != stringsize) | |
1314 | { | |
1315 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 1316 | return false; |
31af1e68 | 1317 | } |
e135f41b NC |
1318 | |
1319 | #ifdef USE_MMAP | |
31af1e68 | 1320 | if (stringsize >= BYTES_IN_LONG) |
e135f41b | 1321 | { |
31af1e68 | 1322 | if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize + 1, |
0a1b45a2 AM |
1323 | &obj_aout_string_window (abfd), true)) |
1324 | return false; | |
31af1e68 | 1325 | strings = (char *) obj_aout_string_window (abfd).data; |
e135f41b | 1326 | } |
31af1e68 | 1327 | else |
e135f41b | 1328 | #endif |
31af1e68 SC |
1329 | { |
1330 | strings = (char *) bfd_malloc (stringsize + 1); | |
1331 | if (strings == NULL) | |
0a1b45a2 | 1332 | return false; |
31af1e68 SC |
1333 | |
1334 | if (stringsize >= BYTES_IN_LONG) | |
1335 | { | |
31af1e68 SC |
1336 | amt = stringsize - BYTES_IN_LONG; |
1337 | if (bfd_bread (strings + BYTES_IN_LONG, amt, abfd) != amt) | |
1338 | { | |
1339 | free (strings); | |
0a1b45a2 | 1340 | return false; |
31af1e68 SC |
1341 | } |
1342 | } | |
1343 | } | |
e135f41b | 1344 | /* Ensure that a zero index yields an empty string. */ |
3f9661f1 AM |
1345 | if (stringsize >= BYTES_IN_WORD) |
1346 | memset (strings, 0, BYTES_IN_LONG); | |
e135f41b | 1347 | |
31af1e68 SC |
1348 | /* Ensure that the string buffer is NUL terminated. */ |
1349 | strings[stringsize] = 0; | |
e135f41b NC |
1350 | |
1351 | obj_aout_external_strings (abfd) = strings; | |
1352 | obj_aout_external_string_size (abfd) = stringsize; | |
1353 | } | |
1354 | ||
0a1b45a2 | 1355 | return true; |
e135f41b NC |
1356 | } |
1357 | ||
1358 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type | |
1359 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1360 | nlist structure. This function is responsible for setting | |
1361 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
1362 | ||
0a1b45a2 | 1363 | static bool |
116c20d2 NC |
1364 | translate_from_native_sym_flags (bfd *abfd, |
1365 | aout_symbol_type *cache_ptr) | |
e135f41b NC |
1366 | { |
1367 | flagword visible; | |
1368 | ||
a975c88e | 1369 | if (is_stab (cache_ptr->type, cache_ptr->symbol.name)) |
e135f41b NC |
1370 | { |
1371 | asection *sec; | |
1372 | ||
1373 | /* This is a debugging symbol. */ | |
e135f41b NC |
1374 | cache_ptr->symbol.flags = BSF_DEBUGGING; |
1375 | ||
1376 | /* Work out the symbol section. */ | |
a975c88e | 1377 | switch (cache_ptr->type) |
e135f41b | 1378 | { |
a975c88e SC |
1379 | case N_SO: |
1380 | case N_SOL: | |
1381 | case N_FUN: | |
1382 | case N_ENTRY: | |
1383 | case N_SLINE: | |
e135f41b NC |
1384 | case N_FN: |
1385 | sec = obj_textsec (abfd); | |
1386 | break; | |
a975c88e SC |
1387 | case N_STSYM: |
1388 | case N_DSLINE: | |
e135f41b NC |
1389 | sec = obj_datasec (abfd); |
1390 | break; | |
a975c88e SC |
1391 | case N_LCSYM: |
1392 | case N_BSLINE: | |
e135f41b NC |
1393 | sec = obj_bsssec (abfd); |
1394 | break; | |
1395 | default: | |
e135f41b NC |
1396 | sec = bfd_abs_section_ptr; |
1397 | break; | |
1398 | } | |
1399 | ||
1400 | cache_ptr->symbol.section = sec; | |
1401 | cache_ptr->symbol.value -= sec->vma; | |
1402 | ||
0a1b45a2 | 1403 | return true; |
e135f41b NC |
1404 | } |
1405 | ||
1406 | /* Get the default visibility. This does not apply to all types, so | |
1407 | we just hold it in a local variable to use if wanted. */ | |
1408 | if ((cache_ptr->type & N_EXT) == 0) | |
1409 | visible = BSF_LOCAL; | |
1410 | else | |
1411 | visible = BSF_GLOBAL; | |
1412 | ||
1413 | switch (cache_ptr->type) | |
1414 | { | |
1415 | default: | |
1416 | case N_ABS: case N_ABS | N_EXT: | |
1417 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1418 | cache_ptr->symbol.flags = visible; | |
1419 | break; | |
1420 | ||
1421 | case N_UNDF | N_EXT: | |
1422 | if (cache_ptr->symbol.value != 0) | |
1423 | { | |
1424 | /* This is a common symbol. */ | |
1425 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
1426 | cache_ptr->symbol.section = bfd_com_section_ptr; | |
1427 | } | |
1428 | else | |
1429 | { | |
1430 | cache_ptr->symbol.flags = 0; | |
1431 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1432 | } | |
1433 | break; | |
1434 | ||
1435 | case N_TEXT: case N_TEXT | N_EXT: | |
1436 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1437 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1438 | cache_ptr->symbol.flags = visible; | |
1439 | break; | |
1440 | ||
1441 | case N_DATA: case N_DATA | N_EXT: | |
1442 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1443 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1444 | cache_ptr->symbol.flags = visible; | |
1445 | break; | |
1446 | ||
1447 | case N_BSS: case N_BSS | N_EXT: | |
1448 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1449 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1450 | cache_ptr->symbol.flags = visible; | |
1451 | break; | |
1452 | } | |
1453 | ||
0a1b45a2 | 1454 | return true; |
e135f41b NC |
1455 | } |
1456 | ||
1457 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ | |
1458 | ||
0a1b45a2 | 1459 | static bool |
116c20d2 NC |
1460 | translate_to_native_sym_flags (bfd *abfd, |
1461 | asymbol *cache_ptr, | |
1462 | struct external_nlist *sym_pointer) | |
e135f41b NC |
1463 | { |
1464 | bfd_vma value = cache_ptr->value; | |
1465 | asection *sec; | |
1466 | bfd_vma off; | |
a975c88e | 1467 | const char *name = cache_ptr->name != NULL ? cache_ptr->name : "*unknown*"; |
e135f41b NC |
1468 | |
1469 | /* Mask out any existing type bits in case copying from one section | |
1470 | to another. */ | |
a975c88e SC |
1471 | if (!is_stab (sym_pointer->e_type[0], name)) |
1472 | sym_pointer->e_type[0] &= ~N_TYPE; | |
e135f41b | 1473 | |
e6f7f6d1 | 1474 | sec = bfd_asymbol_section (cache_ptr); |
e135f41b NC |
1475 | off = 0; |
1476 | ||
1477 | if (sec == NULL) | |
1478 | { | |
1479 | /* This case occurs, e.g., for the *DEBUG* section of a COFF | |
1480 | file. */ | |
4eca0228 | 1481 | _bfd_error_handler |
695344c0 | 1482 | /* xgettext:c-format */ |
871b3ab2 | 1483 | (_("%pB: can not represent section for symbol `%s' in a.out object file format"), |
a975c88e | 1484 | abfd, name); |
e135f41b | 1485 | bfd_set_error (bfd_error_nonrepresentable_section); |
0a1b45a2 | 1486 | return false; |
e135f41b NC |
1487 | } |
1488 | ||
1489 | if (sec->output_section != NULL) | |
1490 | { | |
1491 | off = sec->output_offset; | |
1492 | sec = sec->output_section; | |
1493 | } | |
1494 | ||
1495 | if (bfd_is_abs_section (sec)) | |
1496 | sym_pointer->e_type[0] |= N_ABS; | |
1497 | else if (sec == obj_textsec (abfd)) | |
1498 | sym_pointer->e_type[0] |= N_TEXT; | |
1499 | else if (sec == obj_datasec (abfd)) | |
1500 | sym_pointer->e_type[0] |= N_DATA; | |
1501 | else if (sec == obj_bsssec (abfd)) | |
1502 | sym_pointer->e_type[0] |= N_BSS; | |
1503 | else if (bfd_is_und_section (sec)) | |
1504 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1505 | else if (bfd_is_com_section (sec)) | |
1506 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1507 | else | |
1508 | { | |
4eca0228 | 1509 | _bfd_error_handler |
695344c0 | 1510 | /* xgettext:c-format */ |
871b3ab2 | 1511 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
d003868e | 1512 | abfd, sec); |
e135f41b | 1513 | bfd_set_error (bfd_error_nonrepresentable_section); |
0a1b45a2 | 1514 | return false; |
e135f41b NC |
1515 | } |
1516 | ||
1517 | /* Turn the symbol from section relative to absolute again */ | |
1518 | value += sec->vma + off; | |
1519 | ||
1520 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) | |
1521 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1522 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
1523 | sym_pointer->e_type[0] |= N_EXT; | |
1524 | ||
e135f41b NC |
1525 | PUT_WORD(abfd, value, sym_pointer->e_value); |
1526 | ||
0a1b45a2 | 1527 | return true; |
e135f41b NC |
1528 | } |
1529 | \f | |
1530 | /* Native-level interface to symbols. */ | |
1531 | ||
1532 | asymbol * | |
116c20d2 | 1533 | NAME (aout, make_empty_symbol) (bfd *abfd) |
e135f41b | 1534 | { |
986f0783 | 1535 | size_t amt = sizeof (aout_symbol_type); |
d3ce72d0 | 1536 | aout_symbol_type *new_symbol_type = bfd_zalloc (abfd, amt); |
116c20d2 | 1537 | |
d3ce72d0 | 1538 | if (!new_symbol_type) |
e135f41b | 1539 | return NULL; |
d3ce72d0 | 1540 | new_symbol_type->symbol.the_bfd = abfd; |
e135f41b | 1541 | |
d3ce72d0 | 1542 | return &new_symbol_type->symbol; |
e135f41b NC |
1543 | } |
1544 | ||
3b9313c4 | 1545 | /* Translate a set of external symbols into internal symbols. */ |
e135f41b | 1546 | |
0a1b45a2 | 1547 | bool |
116c20d2 NC |
1548 | NAME (aout, translate_symbol_table) (bfd *abfd, |
1549 | aout_symbol_type *in, | |
1550 | struct external_nlist *ext, | |
1551 | bfd_size_type count, | |
1552 | char *str, | |
1553 | bfd_size_type strsize, | |
0a1b45a2 | 1554 | bool dynamic) |
e135f41b NC |
1555 | { |
1556 | struct external_nlist *ext_end; | |
1557 | ||
1558 | ext_end = ext + count; | |
1559 | for (; ext < ext_end; ext++, in++) | |
1560 | { | |
1561 | bfd_vma x; | |
a975c88e | 1562 | int ovly; |
e135f41b NC |
1563 | |
1564 | x = GET_WORD (abfd, ext->e_strx); | |
1565 | in->symbol.the_bfd = abfd; | |
1566 | ||
1567 | /* For the normal symbols, the zero index points at the number | |
1568 | of bytes in the string table but is to be interpreted as the | |
1569 | null string. For the dynamic symbols, the number of bytes in | |
1570 | the string table is stored in the __DYNAMIC structure and the | |
1571 | zero index points at an actual string. */ | |
1572 | if (x == 0 && ! dynamic) | |
1573 | in->symbol.name = ""; | |
1574 | else if (x < strsize) | |
1575 | in->symbol.name = str + x; | |
1576 | else | |
31af1e68 SC |
1577 | { |
1578 | _bfd_error_handler | |
1579 | (_("%pB: invalid string offset %" PRIu64 " >= %" PRIu64), | |
1580 | abfd, (uint64_t) x, (uint64_t) strsize); | |
1581 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 1582 | return false; |
31af1e68 | 1583 | } |
e135f41b | 1584 | |
a975c88e SC |
1585 | ovly = H_GET_8 (abfd, ext->e_ovly); |
1586 | if (ovly != 0) | |
1587 | { | |
1588 | _bfd_error_handler | |
1589 | (_("%pB: symbol indicates overlay (not supported)"), abfd); | |
1590 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 1591 | return false; |
a975c88e SC |
1592 | } |
1593 | ||
23c8270e | 1594 | in->symbol.value = GET_WORD (abfd, ext->e_value); |
a975c88e SC |
1595 | /* e_desc is zero for normal symbols but for .stab symbols it |
1596 | carries the desc field in our extended 2.11BSD format. */ | |
1597 | in->desc = H_GET_16 (abfd, ext->e_desc); | |
e135f41b | 1598 | in->other = 0; |
dc810e39 | 1599 | in->type = H_GET_8 (abfd, ext->e_type); |
e135f41b NC |
1600 | in->symbol.udata.p = NULL; |
1601 | ||
1602 | if (! translate_from_native_sym_flags (abfd, in)) | |
0a1b45a2 | 1603 | return false; |
e135f41b NC |
1604 | |
1605 | if (dynamic) | |
1606 | in->symbol.flags |= BSF_DYNAMIC; | |
1607 | } | |
1608 | ||
0a1b45a2 | 1609 | return true; |
e135f41b NC |
1610 | } |
1611 | ||
1612 | /* We read the symbols into a buffer, which is discarded when this | |
1613 | function exits. We read the strings into a buffer large enough to | |
116c20d2 | 1614 | hold them all plus all the cached symbol entries. */ |
e135f41b | 1615 | |
0a1b45a2 | 1616 | bool |
116c20d2 | 1617 | NAME (aout, slurp_symbol_table) (bfd *abfd) |
e135f41b NC |
1618 | { |
1619 | struct external_nlist *old_external_syms; | |
1620 | aout_symbol_type *cached; | |
dc810e39 | 1621 | bfd_size_type cached_size; |
e135f41b | 1622 | |
116c20d2 NC |
1623 | /* If there's no work to be done, don't do any. */ |
1624 | if (obj_aout_symbols (abfd) != NULL) | |
0a1b45a2 | 1625 | return true; |
e135f41b NC |
1626 | |
1627 | old_external_syms = obj_aout_external_syms (abfd); | |
1628 | ||
1629 | if (! aout_get_external_symbols (abfd)) | |
0a1b45a2 | 1630 | return false; |
e135f41b | 1631 | |
dc810e39 AM |
1632 | cached_size = obj_aout_external_sym_count (abfd); |
1633 | cached_size *= sizeof (aout_symbol_type); | |
116c20d2 | 1634 | cached = bfd_zmalloc (cached_size); |
e135f41b | 1635 | if (cached == NULL && cached_size != 0) |
0a1b45a2 | 1636 | return false; |
e135f41b NC |
1637 | |
1638 | /* Convert from external symbol information to internal. */ | |
116c20d2 | 1639 | if (! (NAME (aout, translate_symbol_table) |
e135f41b NC |
1640 | (abfd, cached, |
1641 | obj_aout_external_syms (abfd), | |
1642 | obj_aout_external_sym_count (abfd), | |
1643 | obj_aout_external_strings (abfd), | |
1644 | obj_aout_external_string_size (abfd), | |
0a1b45a2 | 1645 | false))) |
e135f41b NC |
1646 | { |
1647 | free (cached); | |
0a1b45a2 | 1648 | return false; |
e135f41b NC |
1649 | } |
1650 | ||
ed48ec2e | 1651 | abfd->symcount = obj_aout_external_sym_count (abfd); |
e135f41b NC |
1652 | |
1653 | obj_aout_symbols (abfd) = cached; | |
1654 | ||
1655 | /* It is very likely that anybody who calls this function will not | |
1656 | want the external symbol information, so if it was allocated | |
1657 | because of our call to aout_get_external_symbols, we free it up | |
1658 | right away to save space. */ | |
116c20d2 NC |
1659 | if (old_external_syms == NULL |
1660 | && obj_aout_external_syms (abfd) != NULL) | |
e135f41b NC |
1661 | { |
1662 | #ifdef USE_MMAP | |
1663 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
1664 | #else | |
1665 | free (obj_aout_external_syms (abfd)); | |
1666 | #endif | |
1667 | obj_aout_external_syms (abfd) = NULL; | |
1668 | } | |
1669 | ||
0a1b45a2 | 1670 | return true; |
e135f41b NC |
1671 | } |
1672 | \f | |
1673 | /* We use a hash table when writing out symbols so that we only write | |
1674 | out a particular string once. This helps particularly when the | |
1675 | linker writes out stabs debugging entries, because each different | |
1676 | contributing object file tends to have many duplicate stabs | |
1677 | strings. | |
1678 | ||
1679 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it | |
1680 | if BFD_TRADITIONAL_FORMAT is set. */ | |
1681 | ||
e135f41b NC |
1682 | /* Get the index of a string in a strtab, adding it if it is not |
1683 | already present. */ | |
1684 | ||
31af1e68 | 1685 | static inline bfd_size_type |
116c20d2 NC |
1686 | add_to_stringtab (bfd *abfd, |
1687 | struct bfd_strtab_hash *tab, | |
1688 | const char *str, | |
0a1b45a2 | 1689 | bool copy) |
e135f41b | 1690 | { |
0a1b45a2 | 1691 | bool hash; |
91d6fa6a | 1692 | bfd_size_type str_index; |
e135f41b NC |
1693 | |
1694 | /* An index of 0 always means the empty string. */ | |
1695 | if (str == 0 || *str == '\0') | |
1696 | return 0; | |
1697 | ||
1698 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx | |
1699 | doesn't understand a hashed string table. */ | |
0a1b45a2 | 1700 | hash = true; |
e135f41b | 1701 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
0a1b45a2 | 1702 | hash = false; |
e135f41b | 1703 | |
91d6fa6a | 1704 | str_index = _bfd_stringtab_add (tab, str, hash, copy); |
e135f41b | 1705 | |
91d6fa6a | 1706 | if (str_index != (bfd_size_type) -1) |
116c20d2 NC |
1707 | /* Add BYTES_IN_LONG to the return value to account for the |
1708 | space taken up by the string table size. */ | |
91d6fa6a | 1709 | str_index += BYTES_IN_LONG; |
e135f41b | 1710 | |
91d6fa6a | 1711 | return str_index; |
e135f41b NC |
1712 | } |
1713 | ||
1714 | /* Write out a strtab. ABFD is already at the right location in the | |
1715 | file. */ | |
1716 | ||
0a1b45a2 | 1717 | static bool |
116c20d2 | 1718 | emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab) |
e135f41b NC |
1719 | { |
1720 | bfd_byte buffer[BYTES_IN_LONG]; | |
1721 | ||
1722 | /* The string table starts with the size. */ | |
dc810e39 | 1723 | H_PUT_32 (abfd, _bfd_stringtab_size (tab) + BYTES_IN_LONG, buffer); |
116c20d2 | 1724 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) BYTES_IN_LONG, abfd) |
dc810e39 | 1725 | != BYTES_IN_LONG) |
0a1b45a2 | 1726 | return false; |
e135f41b NC |
1727 | |
1728 | return _bfd_stringtab_emit (abfd, tab); | |
1729 | } | |
1730 | \f | |
0a1b45a2 | 1731 | bool |
116c20d2 | 1732 | NAME (aout, write_syms) (bfd *abfd) |
e135f41b NC |
1733 | { |
1734 | unsigned int count ; | |
1735 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1736 | struct bfd_strtab_hash *strtab; | |
1737 | ||
1738 | strtab = _bfd_stringtab_init (); | |
1739 | if (strtab == NULL) | |
0a1b45a2 | 1740 | return false; |
e135f41b NC |
1741 | |
1742 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1743 | { | |
1744 | asymbol *g = generic[count]; | |
1745 | bfd_size_type indx; | |
1746 | struct external_nlist nsp; | |
1747 | ||
0a1b45a2 | 1748 | indx = add_to_stringtab (abfd, strtab, g->name, false); |
e135f41b NC |
1749 | if (indx == (bfd_size_type) -1) |
1750 | goto error_return; | |
dc810e39 | 1751 | PUT_WORD (abfd, indx, nsp.e_strx); |
e135f41b NC |
1752 | |
1753 | if (bfd_asymbol_flavour(g) == abfd->xvec->flavour) | |
a975c88e SC |
1754 | { |
1755 | H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc); | |
1756 | H_PUT_8 (abfd, 0, nsp.e_ovly); | |
1757 | H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type); | |
1758 | } | |
e135f41b | 1759 | else |
a975c88e SC |
1760 | { |
1761 | H_PUT_16 (abfd, 0, nsp.e_desc); | |
1762 | H_PUT_8 (abfd, 0, nsp.e_ovly); | |
1763 | H_PUT_8 (abfd, 0, nsp.e_type); | |
1764 | } | |
e135f41b NC |
1765 | |
1766 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) | |
1767 | goto error_return; | |
1768 | ||
116c20d2 | 1769 | if (bfd_bwrite ((void *)&nsp, (bfd_size_type) EXTERNAL_NLIST_SIZE, abfd) |
e135f41b NC |
1770 | != EXTERNAL_NLIST_SIZE) |
1771 | goto error_return; | |
1772 | ||
1773 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only | |
1774 | here, at the end. */ | |
1775 | g->KEEPIT = count; | |
1776 | } | |
1777 | ||
1778 | if (! emit_stringtab (abfd, strtab)) | |
1779 | goto error_return; | |
1780 | ||
1781 | _bfd_stringtab_free (strtab); | |
1782 | ||
0a1b45a2 | 1783 | return true; |
e135f41b | 1784 | |
dc1e8a47 | 1785 | error_return: |
e135f41b | 1786 | _bfd_stringtab_free (strtab); |
0a1b45a2 | 1787 | return false; |
e135f41b NC |
1788 | } |
1789 | ||
1790 | \f | |
1791 | long | |
116c20d2 | 1792 | NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location) |
e135f41b | 1793 | { |
116c20d2 NC |
1794 | unsigned int counter = 0; |
1795 | aout_symbol_type *symbase; | |
e135f41b | 1796 | |
116c20d2 NC |
1797 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
1798 | return -1; | |
e135f41b | 1799 | |
116c20d2 NC |
1800 | for (symbase = obj_aout_symbols (abfd); counter++ < bfd_get_symcount (abfd);) |
1801 | *(location++) = (asymbol *)(symbase++); | |
1802 | *location++ =0; | |
1803 | return bfd_get_symcount (abfd); | |
e135f41b NC |
1804 | } |
1805 | ||
1806 | \f | |
116c20d2 | 1807 | /* Output extended relocation information to a file in target byte order. */ |
e135f41b | 1808 | |
116c20d2 NC |
1809 | static void |
1810 | pdp11_aout_swap_reloc_out (bfd *abfd, arelent *g, bfd_byte *natptr) | |
e135f41b NC |
1811 | { |
1812 | int r_index; | |
1813 | int r_pcrel; | |
1814 | int reloc_entry; | |
1815 | int r_type; | |
1816 | asymbol *sym = *(g->sym_ptr_ptr); | |
1817 | asection *output_section = sym->section->output_section; | |
1818 | ||
1819 | if (g->addend != 0) | |
1820 | fprintf (stderr, "BFD: can't do this reloc addend stuff\n"); | |
1821 | ||
1822 | r_pcrel = g->howto->pc_relative; | |
1823 | ||
1824 | if (bfd_is_abs_section (output_section)) | |
1825 | r_type = RABS; | |
1826 | else if (output_section == obj_textsec (abfd)) | |
1827 | r_type = RTEXT; | |
1828 | else if (output_section == obj_datasec (abfd)) | |
1829 | r_type = RDATA; | |
1830 | else if (output_section == obj_bsssec (abfd)) | |
1831 | r_type = RBSS; | |
1832 | else if (bfd_is_und_section (output_section)) | |
1833 | r_type = REXT; | |
1834 | else if (bfd_is_com_section (output_section)) | |
1835 | r_type = REXT; | |
1836 | else | |
1837 | r_type = -1; | |
1838 | ||
1839 | BFD_ASSERT (r_type != -1); | |
1840 | ||
1841 | if (r_type == RABS) | |
1842 | r_index = 0; | |
1843 | else | |
1844 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
1845 | ||
e135f41b NC |
1846 | reloc_entry = r_index << 4 | r_type | r_pcrel; |
1847 | ||
9dadfa79 | 1848 | PUT_WORD (abfd, reloc_entry, natptr); |
e135f41b NC |
1849 | } |
1850 | ||
1851 | /* BFD deals internally with all things based from the section they're | |
1852 | in. so, something in 10 bytes into a text section with a base of | |
1853 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
1854 | ||
1855 | Aout keeps all it's symbols based from zero, so the symbol would | |
1856 | contain 60. This macro subs the base of each section from the value | |
1857 | to give the true offset from the section */ | |
1858 | ||
1859 | ||
07d6d2b8 AM |
1860 | #define MOVE_ADDRESS(ad) \ |
1861 | if (r_extern) \ | |
e135f41b NC |
1862 | { \ |
1863 | /* Undefined symbol. */ \ | |
e6b6fad2 | 1864 | if (symbols != NULL && r_index < bfd_get_symcount (abfd)) \ |
0a6041ce | 1865 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ |
e6b6fad2 AM |
1866 | else \ |
1867 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
e135f41b NC |
1868 | cache_ptr->addend = ad; \ |
1869 | } \ | |
1870 | else \ | |
1871 | { \ | |
07d6d2b8 | 1872 | /* Defined, section relative. replace symbol with pointer to \ |
e135f41b NC |
1873 | symbol which points to section. */ \ |
1874 | switch (r_index) \ | |
1875 | { \ | |
1876 | case N_TEXT: \ | |
1877 | case N_TEXT | N_EXT: \ | |
1878 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ | |
1879 | cache_ptr->addend = ad - su->textsec->vma; \ | |
1880 | break; \ | |
1881 | case N_DATA: \ | |
1882 | case N_DATA | N_EXT: \ | |
1883 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ | |
1884 | cache_ptr->addend = ad - su->datasec->vma; \ | |
1885 | break; \ | |
1886 | case N_BSS: \ | |
1887 | case N_BSS | N_EXT: \ | |
1888 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ | |
1889 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
1890 | break; \ | |
1891 | default: \ | |
1892 | case N_ABS: \ | |
1893 | case N_ABS | N_EXT: \ | |
1894 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
1895 | cache_ptr->addend = ad; \ | |
1896 | break; \ | |
1897 | } \ | |
dc810e39 | 1898 | } |
e135f41b | 1899 | |
116c20d2 | 1900 | static void |
07d6d2b8 AM |
1901 | pdp11_aout_swap_reloc_in (bfd * abfd, |
1902 | bfd_byte * bytes, | |
1903 | arelent * cache_ptr, | |
1904 | bfd_size_type offset, | |
1905 | asymbol ** symbols, | |
1906 | bfd_size_type symcount) | |
e135f41b NC |
1907 | { |
1908 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
1909 | unsigned int r_index; | |
1910 | int reloc_entry; | |
1911 | int r_extern; | |
1912 | int r_pcrel; | |
1913 | ||
116c20d2 | 1914 | reloc_entry = GET_WORD (abfd, (void *) bytes); |
e135f41b NC |
1915 | |
1916 | r_pcrel = reloc_entry & RELFLG; | |
1917 | ||
1918 | cache_ptr->address = offset; | |
1919 | cache_ptr->howto = howto_table_pdp11 + (r_pcrel ? 1 : 0); | |
1920 | ||
1921 | if ((reloc_entry & RTYPE) == RABS) | |
1922 | r_index = N_ABS; | |
1923 | else | |
1924 | r_index = RINDEX (reloc_entry); | |
1925 | ||
1926 | /* r_extern reflects whether the symbol the reloc is against is | |
1927 | local or global. */ | |
1928 | r_extern = (reloc_entry & RTYPE) == REXT; | |
1929 | ||
31af1e68 | 1930 | if (r_extern && r_index >= symcount) |
e135f41b NC |
1931 | { |
1932 | /* We could arrange to return an error, but it might be useful | |
31af1e68 SC |
1933 | to see the file even if it is bad. FIXME: Of course this |
1934 | means that objdump -r *doesn't* see the actual reloc, and | |
1935 | objcopy silently writes a different reloc. */ | |
e135f41b NC |
1936 | r_extern = 0; |
1937 | r_index = N_ABS; | |
1938 | } | |
1939 | ||
1940 | MOVE_ADDRESS(0); | |
1941 | } | |
1942 | ||
1943 | /* Read and swap the relocs for a section. */ | |
1944 | ||
0a1b45a2 | 1945 | bool |
116c20d2 | 1946 | NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) |
e135f41b | 1947 | { |
9dadfa79 | 1948 | bfd_byte *rptr; |
dc810e39 | 1949 | bfd_size_type count; |
e135f41b | 1950 | bfd_size_type reloc_size; |
116c20d2 | 1951 | void * relocs; |
e135f41b NC |
1952 | arelent *reloc_cache; |
1953 | size_t each_size; | |
1954 | unsigned int counter = 0; | |
1955 | arelent *cache_ptr; | |
1956 | ||
1957 | if (asect->relocation) | |
0a1b45a2 | 1958 | return true; |
e135f41b NC |
1959 | |
1960 | if (asect->flags & SEC_CONSTRUCTOR) | |
0a1b45a2 | 1961 | return true; |
e135f41b NC |
1962 | |
1963 | if (asect == obj_datasec (abfd)) | |
1964 | reloc_size = exec_hdr(abfd)->a_drsize; | |
1965 | else if (asect == obj_textsec (abfd)) | |
1966 | reloc_size = exec_hdr(abfd)->a_trsize; | |
1967 | else if (asect == obj_bsssec (abfd)) | |
1968 | reloc_size = 0; | |
1969 | else | |
1970 | { | |
1971 | bfd_set_error (bfd_error_invalid_operation); | |
0a1b45a2 | 1972 | return false; |
e135f41b NC |
1973 | } |
1974 | ||
1975 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) | |
0a1b45a2 | 1976 | return false; |
2bb3687b | 1977 | relocs = _bfd_malloc_and_read (abfd, reloc_size, reloc_size); |
e135f41b | 1978 | if (relocs == NULL && reloc_size != 0) |
0a1b45a2 | 1979 | return false; |
e135f41b | 1980 | |
2bb3687b | 1981 | each_size = obj_reloc_entry_size (abfd); |
e135f41b NC |
1982 | count = reloc_size / each_size; |
1983 | ||
116c20d2 | 1984 | /* Count the number of NON-ZERO relocs, this is the count we want. */ |
e135f41b NC |
1985 | { |
1986 | unsigned int real_count = 0; | |
1987 | ||
1988 | for (counter = 0; counter < count; counter++) | |
1989 | { | |
1990 | int x; | |
1991 | ||
973ffd63 | 1992 | x = GET_WORD (abfd, (char *) relocs + each_size * counter); |
e135f41b NC |
1993 | if (x != 0) |
1994 | real_count++; | |
1995 | } | |
1996 | ||
1997 | count = real_count; | |
1998 | } | |
1999 | ||
116c20d2 | 2000 | reloc_cache = bfd_zmalloc (count * sizeof (arelent)); |
e135f41b | 2001 | if (reloc_cache == NULL && count != 0) |
0a1b45a2 | 2002 | return false; |
e135f41b NC |
2003 | |
2004 | cache_ptr = reloc_cache; | |
2005 | ||
9dadfa79 | 2006 | rptr = relocs; |
e135f41b NC |
2007 | for (counter = 0; |
2008 | counter < count; | |
9dadfa79 | 2009 | counter++, rptr += RELOC_SIZE, cache_ptr++) |
e135f41b | 2010 | { |
116c20d2 | 2011 | while (GET_WORD (abfd, (void *) rptr) == 0) |
e135f41b | 2012 | { |
9dadfa79 | 2013 | rptr += RELOC_SIZE; |
dc810e39 | 2014 | if ((char *) rptr >= (char *) relocs + reloc_size) |
e135f41b NC |
2015 | goto done; |
2016 | } | |
2017 | ||
2018 | pdp11_aout_swap_reloc_in (abfd, rptr, cache_ptr, | |
dc810e39 AM |
2019 | (bfd_size_type) ((char *) rptr - (char *) relocs), |
2020 | symbols, | |
2021 | (bfd_size_type) bfd_get_symcount (abfd)); | |
e135f41b NC |
2022 | } |
2023 | done: | |
2024 | /* Just in case, if rptr >= relocs + reloc_size should happen | |
116c20d2 | 2025 | too early. */ |
e135f41b NC |
2026 | BFD_ASSERT (counter == count); |
2027 | ||
2028 | free (relocs); | |
2029 | ||
2030 | asect->relocation = reloc_cache; | |
2031 | asect->reloc_count = cache_ptr - reloc_cache; | |
2032 | ||
0a1b45a2 | 2033 | return true; |
e135f41b NC |
2034 | } |
2035 | ||
2036 | /* Write out a relocation section into an object file. */ | |
2037 | ||
0a1b45a2 | 2038 | bool |
116c20d2 | 2039 | NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section) |
e135f41b NC |
2040 | { |
2041 | arelent **generic; | |
2042 | unsigned char *native; | |
2043 | unsigned int count = section->reloc_count; | |
dc810e39 | 2044 | bfd_size_type natsize; |
e135f41b | 2045 | |
eea6121a | 2046 | natsize = section->size; |
116c20d2 | 2047 | native = bfd_zalloc (abfd, natsize); |
e135f41b | 2048 | if (!native) |
0a1b45a2 | 2049 | return false; |
e135f41b | 2050 | |
e135f41b NC |
2051 | generic = section->orelocation; |
2052 | if (generic != NULL) | |
2053 | { | |
2054 | while (count > 0) | |
2055 | { | |
9dadfa79 | 2056 | bfd_byte *r; |
e135f41b | 2057 | |
31af1e68 SC |
2058 | if ((*generic)->howto == NULL |
2059 | || (*generic)->sym_ptr_ptr == NULL) | |
2060 | { | |
2061 | bfd_set_error (bfd_error_invalid_operation); | |
2062 | _bfd_error_handler (_("%pB: attempt to write out " | |
2063 | "unknown reloc type"), abfd); | |
2064 | bfd_release (abfd, native); | |
0a1b45a2 | 2065 | return false; |
31af1e68 | 2066 | } |
9dadfa79 | 2067 | r = native + (*generic)->address; |
e135f41b NC |
2068 | pdp11_aout_swap_reloc_out (abfd, *generic, r); |
2069 | count--; | |
2070 | generic++; | |
2071 | } | |
2072 | } | |
2073 | ||
116c20d2 | 2074 | if (bfd_bwrite ((void *) native, natsize, abfd) != natsize) |
e135f41b | 2075 | { |
dc810e39 | 2076 | bfd_release (abfd, native); |
0a1b45a2 | 2077 | return false; |
e135f41b NC |
2078 | } |
2079 | ||
2080 | bfd_release (abfd, native); | |
0a1b45a2 | 2081 | return true; |
e135f41b NC |
2082 | } |
2083 | ||
116c20d2 NC |
2084 | /* This is stupid. This function should be a boolean predicate. */ |
2085 | ||
e135f41b | 2086 | long |
116c20d2 NC |
2087 | NAME (aout, canonicalize_reloc) (bfd *abfd, |
2088 | sec_ptr section, | |
2089 | arelent **relptr, | |
2090 | asymbol **symbols) | |
e135f41b NC |
2091 | { |
2092 | arelent *tblptr = section->relocation; | |
2093 | unsigned int count; | |
2094 | ||
2095 | if (section == obj_bsssec (abfd)) | |
2096 | { | |
2097 | *relptr = NULL; | |
2098 | return 0; | |
2099 | } | |
2100 | ||
116c20d2 | 2101 | if (!(tblptr || NAME (aout, slurp_reloc_table)(abfd, section, symbols))) |
e135f41b NC |
2102 | return -1; |
2103 | ||
2104 | if (section->flags & SEC_CONSTRUCTOR) | |
2105 | { | |
2106 | arelent_chain *chain = section->constructor_chain; | |
2107 | ||
2108 | for (count = 0; count < section->reloc_count; count ++) | |
2109 | { | |
2110 | *relptr ++ = &chain->relent; | |
2111 | chain = chain->next; | |
2112 | } | |
2113 | } | |
2114 | else | |
2115 | { | |
2116 | tblptr = section->relocation; | |
2117 | ||
2118 | for (count = 0; count++ < section->reloc_count;) | |
2119 | *relptr++ = tblptr++; | |
2120 | } | |
2121 | ||
2122 | *relptr = 0; | |
2123 | ||
2124 | return section->reloc_count; | |
2125 | } | |
2126 | ||
2127 | long | |
116c20d2 | 2128 | NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect) |
e135f41b | 2129 | { |
a3eb71ad | 2130 | size_t count, raw; |
e135f41b | 2131 | |
dc810e39 | 2132 | if (asect->flags & SEC_CONSTRUCTOR) |
7a6e0d89 AM |
2133 | count = asect->reloc_count; |
2134 | else if (asect == obj_datasec (abfd)) | |
2135 | count = exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
2136 | else if (asect == obj_textsec (abfd)) | |
2137 | count = exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
2138 | else if (asect == obj_bsssec (abfd)) | |
2139 | count = 0; | |
2140 | else | |
2141 | { | |
2142 | bfd_set_error (bfd_error_invalid_operation); | |
2143 | return -1; | |
2144 | } | |
e135f41b | 2145 | |
a3eb71ad AM |
2146 | if (count >= LONG_MAX / sizeof (arelent *) |
2147 | || _bfd_mul_overflow (count, obj_reloc_entry_size (abfd), &raw)) | |
7a6e0d89 AM |
2148 | { |
2149 | bfd_set_error (bfd_error_file_too_big); | |
2150 | return -1; | |
2151 | } | |
a3eb71ad AM |
2152 | if (!bfd_write_p (abfd)) |
2153 | { | |
2154 | ufile_ptr filesize = bfd_get_file_size (abfd); | |
2155 | if (filesize != 0 && raw > filesize) | |
2156 | { | |
2157 | bfd_set_error (bfd_error_file_truncated); | |
2158 | return -1; | |
2159 | } | |
2160 | } | |
7a6e0d89 | 2161 | return (count + 1) * sizeof (arelent *); |
e135f41b NC |
2162 | } |
2163 | ||
2164 | \f | |
2165 | long | |
116c20d2 | 2166 | NAME (aout, get_symtab_upper_bound) (bfd *abfd) |
e135f41b | 2167 | { |
116c20d2 | 2168 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
e135f41b NC |
2169 | return -1; |
2170 | ||
2171 | return (bfd_get_symcount (abfd) + 1) * (sizeof (aout_symbol_type *)); | |
2172 | } | |
2173 | ||
2174 | alent * | |
116c20d2 NC |
2175 | NAME (aout, get_lineno) (bfd * abfd ATTRIBUTE_UNUSED, |
2176 | asymbol * symbol ATTRIBUTE_UNUSED) | |
e135f41b | 2177 | { |
116c20d2 | 2178 | return NULL; |
e135f41b NC |
2179 | } |
2180 | ||
2181 | void | |
116c20d2 NC |
2182 | NAME (aout, get_symbol_info) (bfd * abfd ATTRIBUTE_UNUSED, |
2183 | asymbol *symbol, | |
2184 | symbol_info *ret) | |
e135f41b NC |
2185 | { |
2186 | bfd_symbol_info (symbol, ret); | |
2187 | ||
2188 | if (ret->type == '?') | |
2189 | { | |
2190 | int type_code = aout_symbol(symbol)->type & 0xff; | |
2191 | const char *stab_name = bfd_get_stab_name (type_code); | |
2192 | static char buf[10]; | |
2193 | ||
2194 | if (stab_name == NULL) | |
2195 | { | |
2196 | sprintf(buf, "(%d)", type_code); | |
2197 | stab_name = buf; | |
2198 | } | |
2199 | ret->type = '-'; | |
116c20d2 NC |
2200 | ret->stab_type = type_code; |
2201 | ret->stab_other = (unsigned) (aout_symbol(symbol)->other & 0xff); | |
2202 | ret->stab_desc = (unsigned) (aout_symbol(symbol)->desc & 0xffff); | |
2203 | ret->stab_name = stab_name; | |
e135f41b NC |
2204 | } |
2205 | } | |
2206 | ||
e135f41b | 2207 | void |
116c20d2 NC |
2208 | NAME (aout, print_symbol) (bfd * abfd, |
2209 | void * afile, | |
2210 | asymbol *symbol, | |
2211 | bfd_print_symbol_type how) | |
e135f41b | 2212 | { |
116c20d2 | 2213 | FILE *file = (FILE *) afile; |
e135f41b NC |
2214 | |
2215 | switch (how) | |
2216 | { | |
2217 | case bfd_print_symbol_name: | |
2218 | if (symbol->name) | |
2219 | fprintf(file,"%s", symbol->name); | |
2220 | break; | |
2221 | case bfd_print_symbol_more: | |
116c20d2 NC |
2222 | fprintf(file,"%4x %2x %2x", |
2223 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2224 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2225 | (unsigned) (aout_symbol (symbol)->type)); | |
e135f41b NC |
2226 | break; |
2227 | case bfd_print_symbol_all: | |
2228 | { | |
dc810e39 | 2229 | const char *section_name = symbol->section->name; |
e135f41b | 2230 | |
116c20d2 | 2231 | bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
e135f41b NC |
2232 | |
2233 | fprintf (file," %-5s %04x %02x %02x", | |
2234 | section_name, | |
116c20d2 NC |
2235 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), |
2236 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2237 | (unsigned) (aout_symbol (symbol)->type & 0xff)); | |
e135f41b NC |
2238 | if (symbol->name) |
2239 | fprintf(file," %s", symbol->name); | |
2240 | } | |
2241 | break; | |
2242 | } | |
2243 | } | |
2244 | ||
2245 | /* If we don't have to allocate more than 1MB to hold the generic | |
2246 | symbols, we use the generic minisymbol method: it's faster, since | |
2247 | it only translates the symbols once, not multiple times. */ | |
2248 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2249 | ||
2250 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2251 | symbols. The minisymbol_to_symbol function translates these into | |
2252 | BFD asymbol structures. */ | |
2253 | ||
2254 | long | |
116c20d2 | 2255 | NAME (aout, read_minisymbols) (bfd *abfd, |
0a1b45a2 | 2256 | bool dynamic, |
116c20d2 NC |
2257 | void * *minisymsp, |
2258 | unsigned int *sizep) | |
e135f41b NC |
2259 | { |
2260 | if (dynamic) | |
116c20d2 NC |
2261 | /* We could handle the dynamic symbols here as well, but it's |
2262 | easier to hand them off. */ | |
2263 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
e135f41b NC |
2264 | |
2265 | if (! aout_get_external_symbols (abfd)) | |
2266 | return -1; | |
2267 | ||
2268 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2269 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2270 | ||
116c20d2 | 2271 | *minisymsp = (void *) obj_aout_external_syms (abfd); |
e135f41b NC |
2272 | |
2273 | /* By passing the external symbols back from this routine, we are | |
2274 | giving up control over the memory block. Clear | |
2275 | obj_aout_external_syms, so that we do not try to free it | |
2276 | ourselves. */ | |
2277 | obj_aout_external_syms (abfd) = NULL; | |
2278 | ||
2279 | *sizep = EXTERNAL_NLIST_SIZE; | |
2280 | return obj_aout_external_sym_count (abfd); | |
2281 | } | |
2282 | ||
2283 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2284 | unmodified a.out symbol. The SYM argument is a structure returned | |
2285 | by bfd_make_empty_symbol, which we fill in here. */ | |
2286 | ||
2287 | asymbol * | |
116c20d2 | 2288 | NAME (aout, minisymbol_to_symbol) (bfd *abfd, |
0a1b45a2 | 2289 | bool dynamic, |
116c20d2 NC |
2290 | const void * minisym, |
2291 | asymbol *sym) | |
e135f41b NC |
2292 | { |
2293 | if (dynamic | |
2294 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2295 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2296 | ||
2297 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2298 | ||
2299 | /* We call translate_symbol_table to translate a single symbol. */ | |
116c20d2 | 2300 | if (! (NAME (aout, translate_symbol_table) |
e135f41b NC |
2301 | (abfd, |
2302 | (aout_symbol_type *) sym, | |
2303 | (struct external_nlist *) minisym, | |
2304 | (bfd_size_type) 1, | |
2305 | obj_aout_external_strings (abfd), | |
2306 | obj_aout_external_string_size (abfd), | |
0a1b45a2 | 2307 | false))) |
e135f41b NC |
2308 | return NULL; |
2309 | ||
2310 | return sym; | |
2311 | } | |
2312 | ||
116c20d2 NC |
2313 | /* Provided a BFD, a section and an offset into the section, calculate |
2314 | and return the name of the source file and the line nearest to the | |
2315 | wanted location. */ | |
e135f41b | 2316 | |
0a1b45a2 | 2317 | bool |
116c20d2 | 2318 | NAME (aout, find_nearest_line) (bfd *abfd, |
116c20d2 | 2319 | asymbol **symbols, |
fb167eb2 | 2320 | asection *section, |
116c20d2 NC |
2321 | bfd_vma offset, |
2322 | const char **filename_ptr, | |
2323 | const char **functionname_ptr, | |
fb167eb2 AM |
2324 | unsigned int *line_ptr, |
2325 | unsigned int *discriminator_ptr) | |
e135f41b | 2326 | { |
116c20d2 | 2327 | /* Run down the file looking for the filename, function and linenumber. */ |
e135f41b | 2328 | asymbol **p; |
dc810e39 AM |
2329 | const char *directory_name = NULL; |
2330 | const char *main_file_name = NULL; | |
2331 | const char *current_file_name = NULL; | |
116c20d2 | 2332 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ |
e135f41b NC |
2333 | bfd_vma low_line_vma = 0; |
2334 | bfd_vma low_func_vma = 0; | |
2335 | asymbol *func = 0; | |
2336 | size_t filelen, funclen; | |
2337 | char *buf; | |
2338 | ||
765cf5f6 | 2339 | *filename_ptr = bfd_get_filename (abfd); |
31af1e68 | 2340 | *functionname_ptr = NULL; |
e135f41b | 2341 | *line_ptr = 0; |
fb167eb2 AM |
2342 | if (discriminator_ptr) |
2343 | *discriminator_ptr = 0; | |
e135f41b | 2344 | |
116c20d2 | 2345 | if (symbols != NULL) |
e135f41b NC |
2346 | { |
2347 | for (p = symbols; *p; p++) | |
2348 | { | |
2349 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
2350 | next: | |
2351 | switch (q->type) | |
2352 | { | |
2353 | case N_TEXT: | |
2354 | /* If this looks like a file name symbol, and it comes after | |
2355 | the line number we have found so far, but before the | |
2356 | offset, then we have probably not found the right line | |
2357 | number. */ | |
2358 | if (q->symbol.value <= offset | |
2359 | && ((q->symbol.value > low_line_vma | |
2360 | && (line_file_name != NULL | |
2361 | || *line_ptr != 0)) | |
2362 | || (q->symbol.value > low_func_vma | |
2363 | && func != NULL))) | |
2364 | { | |
2365 | const char * symname; | |
2366 | ||
2367 | symname = q->symbol.name; | |
31af1e68 SC |
2368 | |
2369 | if (symname != NULL | |
2370 | && strlen (symname) > 2 | |
2371 | && strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
e135f41b NC |
2372 | { |
2373 | if (q->symbol.value > low_line_vma) | |
2374 | { | |
2375 | *line_ptr = 0; | |
2376 | line_file_name = NULL; | |
2377 | } | |
2378 | if (q->symbol.value > low_func_vma) | |
2379 | func = NULL; | |
2380 | } | |
2381 | } | |
2382 | break; | |
2383 | ||
2384 | case N_SO: | |
2385 | /* If this symbol is less than the offset, but greater than | |
2386 | the line number we have found so far, then we have not | |
2387 | found the right line number. */ | |
2388 | if (q->symbol.value <= offset) | |
2389 | { | |
2390 | if (q->symbol.value > low_line_vma) | |
2391 | { | |
2392 | *line_ptr = 0; | |
2393 | line_file_name = NULL; | |
2394 | } | |
2395 | if (q->symbol.value > low_func_vma) | |
2396 | func = NULL; | |
2397 | } | |
2398 | ||
2399 | main_file_name = current_file_name = q->symbol.name; | |
116c20d2 | 2400 | /* Look ahead to next symbol to check if that too is an N_SO. */ |
e135f41b NC |
2401 | p++; |
2402 | if (*p == NULL) | |
31af1e68 | 2403 | goto done; |
e135f41b | 2404 | q = (aout_symbol_type *)(*p); |
116c20d2 | 2405 | if (q->type != (int) N_SO) |
e135f41b NC |
2406 | goto next; |
2407 | ||
116c20d2 | 2408 | /* Found a second N_SO First is directory; second is filename. */ |
e135f41b NC |
2409 | directory_name = current_file_name; |
2410 | main_file_name = current_file_name = q->symbol.name; | |
2411 | if (obj_textsec(abfd) != section) | |
2412 | goto done; | |
2413 | break; | |
2414 | case N_SOL: | |
2415 | current_file_name = q->symbol.name; | |
2416 | break; | |
2417 | ||
2418 | case N_SLINE: | |
2419 | case N_DSLINE: | |
2420 | case N_BSLINE: | |
2421 | /* We'll keep this if it resolves nearer than the one we have | |
2422 | already. */ | |
2423 | if (q->symbol.value >= low_line_vma | |
2424 | && q->symbol.value <= offset) | |
2425 | { | |
2426 | *line_ptr = q->desc; | |
2427 | low_line_vma = q->symbol.value; | |
2428 | line_file_name = current_file_name; | |
2429 | } | |
2430 | break; | |
2431 | ||
2432 | case N_FUN: | |
2433 | { | |
116c20d2 | 2434 | /* We'll keep this if it is nearer than the one we have already. */ |
e135f41b NC |
2435 | if (q->symbol.value >= low_func_vma && |
2436 | q->symbol.value <= offset) | |
2437 | { | |
2438 | low_func_vma = q->symbol.value; | |
116c20d2 | 2439 | func = (asymbol *) q; |
e135f41b NC |
2440 | } |
2441 | else if (q->symbol.value > offset) | |
2442 | goto done; | |
2443 | } | |
2444 | break; | |
2445 | } | |
2446 | } | |
2447 | } | |
2448 | ||
2449 | done: | |
2450 | if (*line_ptr != 0) | |
2451 | main_file_name = line_file_name; | |
2452 | ||
2453 | if (main_file_name == NULL | |
2454 | || main_file_name[0] == '/' | |
2455 | || directory_name == NULL) | |
2456 | filelen = 0; | |
2457 | else | |
2458 | filelen = strlen (directory_name) + strlen (main_file_name); | |
2459 | if (func == NULL) | |
2460 | funclen = 0; | |
2461 | else | |
2462 | funclen = strlen (bfd_asymbol_name (func)); | |
2463 | ||
c9594989 | 2464 | free (adata (abfd).line_buf); |
e135f41b NC |
2465 | if (filelen + funclen == 0) |
2466 | adata (abfd).line_buf = buf = NULL; | |
2467 | else | |
2468 | { | |
116c20d2 | 2469 | buf = bfd_malloc ((bfd_size_type) filelen + funclen + 3); |
e135f41b NC |
2470 | adata (abfd).line_buf = buf; |
2471 | if (buf == NULL) | |
0a1b45a2 | 2472 | return false; |
e135f41b NC |
2473 | } |
2474 | ||
2475 | if (main_file_name != NULL) | |
2476 | { | |
2477 | if (main_file_name[0] == '/' || directory_name == NULL) | |
2478 | *filename_ptr = main_file_name; | |
2479 | else | |
2480 | { | |
31af1e68 SC |
2481 | if (buf == NULL) |
2482 | /* PR binutils/20891: In a corrupt input file both | |
2483 | main_file_name and directory_name can be empty... */ | |
2484 | * filename_ptr = NULL; | |
2485 | else | |
2486 | { | |
2487 | snprintf (buf, filelen + 1, "%s%s", directory_name, | |
2488 | main_file_name); | |
2489 | *filename_ptr = buf; | |
2490 | buf += filelen + 1; | |
2491 | } | |
e135f41b NC |
2492 | } |
2493 | } | |
2494 | ||
2495 | if (func) | |
2496 | { | |
2497 | const char *function = func->name; | |
dc810e39 | 2498 | char *colon; |
e135f41b | 2499 | |
31af1e68 SC |
2500 | if (buf == NULL) |
2501 | { | |
2502 | /* PR binutils/20892: In a corrupt input file func can be empty. */ | |
2503 | * functionname_ptr = NULL; | |
0a1b45a2 | 2504 | return true; |
31af1e68 | 2505 | } |
e135f41b NC |
2506 | /* The caller expects a symbol name. We actually have a |
2507 | function name, without the leading underscore. Put the | |
2508 | underscore back in, so that the caller gets a symbol name. */ | |
2509 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2510 | strcpy (buf, function); | |
2511 | else | |
2512 | { | |
2513 | buf[0] = bfd_get_symbol_leading_char (abfd); | |
2514 | strcpy (buf + 1, function); | |
2515 | } | |
2516 | ||
2517 | /* Have to remove : stuff. */ | |
dc810e39 AM |
2518 | colon = strchr (buf, ':'); |
2519 | if (colon != NULL) | |
2520 | *colon = '\0'; | |
e135f41b NC |
2521 | *functionname_ptr = buf; |
2522 | } | |
2523 | ||
0a1b45a2 | 2524 | return true; |
e135f41b NC |
2525 | } |
2526 | ||
2527 | int | |
a6b96beb AM |
2528 | NAME (aout, sizeof_headers) (bfd *abfd, |
2529 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
e135f41b | 2530 | { |
116c20d2 | 2531 | return adata (abfd).exec_bytes_size; |
e135f41b NC |
2532 | } |
2533 | ||
ba75d1c5 | 2534 | /* Throw away most malloc'd and alloc'd information for this BFD. */ |
e135f41b | 2535 | |
0a1b45a2 | 2536 | bool |
116c20d2 | 2537 | NAME (aout, bfd_free_cached_info) (bfd *abfd) |
e135f41b | 2538 | { |
ba75d1c5 AM |
2539 | if ((bfd_get_format (abfd) == bfd_object |
2540 | || bfd_get_format (abfd) == bfd_core) | |
2541 | && abfd->tdata.aout_data != NULL) | |
2542 | { | |
c9594989 | 2543 | #define BFCI_FREE(x) do { free (x); x = NULL; } while (0) |
ba75d1c5 AM |
2544 | BFCI_FREE (adata (abfd).line_buf); |
2545 | BFCI_FREE (obj_aout_symbols (abfd)); | |
e135f41b | 2546 | #ifdef USE_MMAP |
ba75d1c5 AM |
2547 | obj_aout_external_syms (abfd) = 0; |
2548 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2549 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2550 | obj_aout_external_strings (abfd) = 0; | |
e135f41b | 2551 | #else |
ba75d1c5 AM |
2552 | BFCI_FREE (obj_aout_external_syms (abfd)); |
2553 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
e135f41b | 2554 | #endif |
ba75d1c5 AM |
2555 | for (asection *o = abfd->sections; o != NULL; o = o->next) |
2556 | BFCI_FREE (o->relocation); | |
e135f41b | 2557 | #undef BFCI_FREE |
ba75d1c5 | 2558 | } |
e135f41b | 2559 | |
ba75d1c5 | 2560 | return _bfd_generic_bfd_free_cached_info (abfd); |
e135f41b NC |
2561 | } |
2562 | \f | |
e135f41b NC |
2563 | /* Routine to create an entry in an a.out link hash table. */ |
2564 | ||
2565 | struct bfd_hash_entry * | |
116c20d2 NC |
2566 | NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry, |
2567 | struct bfd_hash_table *table, | |
2568 | const char *string) | |
e135f41b NC |
2569 | { |
2570 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2571 | ||
2572 | /* Allocate the structure if it has not already been allocated by a | |
2573 | subclass. */ | |
116c20d2 NC |
2574 | if (ret == NULL) |
2575 | ret = bfd_hash_allocate (table, sizeof (* ret)); | |
2576 | if (ret == NULL) | |
2577 | return NULL; | |
e135f41b NC |
2578 | |
2579 | /* Call the allocation method of the superclass. */ | |
116c20d2 NC |
2580 | ret = (struct aout_link_hash_entry *) |
2581 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string); | |
e135f41b NC |
2582 | if (ret) |
2583 | { | |
2584 | /* Set local fields. */ | |
0a1b45a2 | 2585 | ret->written = false; |
e135f41b NC |
2586 | ret->indx = -1; |
2587 | } | |
2588 | ||
2589 | return (struct bfd_hash_entry *) ret; | |
2590 | } | |
2591 | ||
2592 | /* Initialize an a.out link hash table. */ | |
2593 | ||
0a1b45a2 | 2594 | bool |
116c20d2 NC |
2595 | NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table, |
2596 | bfd *abfd, | |
2597 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
2598 | struct bfd_hash_table *, | |
66eb6687 AM |
2599 | const char *), |
2600 | unsigned int entsize) | |
e135f41b | 2601 | { |
66eb6687 | 2602 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
e135f41b NC |
2603 | } |
2604 | ||
2605 | /* Create an a.out link hash table. */ | |
2606 | ||
2607 | struct bfd_link_hash_table * | |
116c20d2 | 2608 | NAME (aout, link_hash_table_create) (bfd *abfd) |
e135f41b NC |
2609 | { |
2610 | struct aout_link_hash_table *ret; | |
986f0783 | 2611 | size_t amt = sizeof (struct aout_link_hash_table); |
e135f41b | 2612 | |
22cdc249 | 2613 | ret = bfd_malloc (amt); |
e135f41b | 2614 | if (ret == NULL) |
116c20d2 NC |
2615 | return NULL; |
2616 | if (! NAME (aout, link_hash_table_init) (ret, abfd, | |
66eb6687 AM |
2617 | NAME (aout, link_hash_newfunc), |
2618 | sizeof (struct aout_link_hash_entry))) | |
e135f41b NC |
2619 | { |
2620 | free (ret); | |
116c20d2 | 2621 | return NULL; |
e135f41b NC |
2622 | } |
2623 | return &ret->root; | |
2624 | } | |
2625 | ||
116c20d2 NC |
2626 | /* Free up the internal symbols read from an a.out file. */ |
2627 | ||
0a1b45a2 | 2628 | static bool |
116c20d2 NC |
2629 | aout_link_free_symbols (bfd *abfd) |
2630 | { | |
2631 | if (obj_aout_external_syms (abfd) != NULL) | |
2632 | { | |
2633 | #ifdef USE_MMAP | |
2634 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2635 | #else | |
2636 | free ((void *) obj_aout_external_syms (abfd)); | |
2637 | #endif | |
2638 | obj_aout_external_syms (abfd) = NULL; | |
2639 | } | |
2640 | ||
2641 | if (obj_aout_external_strings (abfd) != NULL) | |
2642 | { | |
2643 | #ifdef USE_MMAP | |
2644 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2645 | #else | |
2646 | free ((void *) obj_aout_external_strings (abfd)); | |
2647 | #endif | |
2648 | obj_aout_external_strings (abfd) = NULL; | |
2649 | } | |
0a1b45a2 | 2650 | return true; |
116c20d2 NC |
2651 | } |
2652 | ||
e135f41b NC |
2653 | /* Given an a.out BFD, add symbols to the global hash table as |
2654 | appropriate. */ | |
2655 | ||
0a1b45a2 | 2656 | bool |
116c20d2 | 2657 | NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info) |
e135f41b NC |
2658 | { |
2659 | switch (bfd_get_format (abfd)) | |
2660 | { | |
2661 | case bfd_object: | |
2662 | return aout_link_add_object_symbols (abfd, info); | |
2663 | case bfd_archive: | |
2664 | return _bfd_generic_link_add_archive_symbols | |
2665 | (abfd, info, aout_link_check_archive_element); | |
2666 | default: | |
2667 | bfd_set_error (bfd_error_wrong_format); | |
0a1b45a2 | 2668 | return false; |
e135f41b NC |
2669 | } |
2670 | } | |
2671 | ||
2672 | /* Add symbols from an a.out object file. */ | |
2673 | ||
0a1b45a2 | 2674 | static bool |
116c20d2 | 2675 | aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
e135f41b NC |
2676 | { |
2677 | if (! aout_get_external_symbols (abfd)) | |
0a1b45a2 | 2678 | return false; |
e135f41b | 2679 | if (! aout_link_add_symbols (abfd, info)) |
0a1b45a2 | 2680 | return false; |
e135f41b NC |
2681 | if (! info->keep_memory) |
2682 | { | |
2683 | if (! aout_link_free_symbols (abfd)) | |
0a1b45a2 | 2684 | return false; |
e135f41b | 2685 | } |
0a1b45a2 | 2686 | return true; |
e135f41b NC |
2687 | } |
2688 | ||
e135f41b NC |
2689 | /* Look through the internal symbols to see if this object file should |
2690 | be included in the link. We should include this object file if it | |
2691 | defines any symbols which are currently undefined. If this object | |
2692 | file defines a common symbol, then we may adjust the size of the | |
2693 | known symbol but we do not include the object file in the link | |
2694 | (unless there is some other reason to include it). */ | |
2695 | ||
0a1b45a2 | 2696 | static bool |
116c20d2 NC |
2697 | aout_link_check_ar_symbols (bfd *abfd, |
2698 | struct bfd_link_info *info, | |
0a1b45a2 | 2699 | bool *pneeded, |
5d3236ee | 2700 | bfd **subsbfd) |
e135f41b | 2701 | { |
116c20d2 | 2702 | struct external_nlist *p; |
e135f41b NC |
2703 | struct external_nlist *pend; |
2704 | char *strings; | |
2705 | ||
0a1b45a2 | 2706 | *pneeded = false; |
e135f41b NC |
2707 | |
2708 | /* Look through all the symbols. */ | |
2709 | p = obj_aout_external_syms (abfd); | |
2710 | pend = p + obj_aout_external_sym_count (abfd); | |
2711 | strings = obj_aout_external_strings (abfd); | |
2712 | for (; p < pend; p++) | |
2713 | { | |
dc810e39 | 2714 | int type = H_GET_8 (abfd, p->e_type); |
a975c88e | 2715 | const char *name = strings + GET_WORD (abfd, p->e_strx); |
e135f41b NC |
2716 | struct bfd_link_hash_entry *h; |
2717 | ||
2718 | /* Ignore symbols that are not externally visible. This is an | |
2719 | optimization only, as we check the type more thoroughly | |
2720 | below. */ | |
2721 | if ((type & N_EXT) == 0 | |
a975c88e | 2722 | || is_stab(type, name) |
e135f41b NC |
2723 | || type == N_FN) |
2724 | continue; | |
2725 | ||
0a1b45a2 | 2726 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); |
e135f41b NC |
2727 | |
2728 | /* We are only interested in symbols that are currently | |
2729 | undefined or common. */ | |
116c20d2 | 2730 | if (h == NULL |
e135f41b NC |
2731 | || (h->type != bfd_link_hash_undefined |
2732 | && h->type != bfd_link_hash_common)) | |
2733 | continue; | |
2734 | ||
2735 | if (type == (N_TEXT | N_EXT) | |
2736 | || type == (N_DATA | N_EXT) | |
2737 | || type == (N_BSS | N_EXT) | |
2738 | || type == (N_ABS | N_EXT)) | |
2739 | { | |
2740 | /* This object file defines this symbol. We must link it | |
2741 | in. This is true regardless of whether the current | |
2742 | definition of the symbol is undefined or common. If the | |
2743 | current definition is common, we have a case in which we | |
2744 | have already seen an object file including | |
07d6d2b8 | 2745 | int a; |
e135f41b | 2746 | and this object file from the archive includes |
07d6d2b8 | 2747 | int a = 5; |
e135f41b NC |
2748 | In such a case we must include this object file. |
2749 | ||
2750 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
2751 | element if the symbol is defined in the .data section, | |
2752 | but not if it is defined in the .text section. That | |
2753 | seems a bit crazy to me, and I haven't implemented it. | |
2754 | However, it might be correct. */ | |
0e144ba7 AM |
2755 | if (!(*info->callbacks |
2756 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
b95a0a31 | 2757 | continue; |
0a1b45a2 AM |
2758 | *pneeded = true; |
2759 | return true; | |
e135f41b NC |
2760 | } |
2761 | ||
2762 | if (type == (N_UNDF | N_EXT)) | |
2763 | { | |
2764 | bfd_vma value; | |
2765 | ||
2766 | value = GET_WORD (abfd, p->e_value); | |
2767 | if (value != 0) | |
2768 | { | |
2769 | /* This symbol is common in the object from the archive | |
2770 | file. */ | |
2771 | if (h->type == bfd_link_hash_undefined) | |
2772 | { | |
2773 | bfd *symbfd; | |
2774 | unsigned int power; | |
2775 | ||
2776 | symbfd = h->u.undef.abfd; | |
116c20d2 | 2777 | if (symbfd == NULL) |
e135f41b NC |
2778 | { |
2779 | /* This symbol was created as undefined from | |
2780 | outside BFD. We assume that we should link | |
2781 | in the object file. This is done for the -u | |
2782 | option in the linker. */ | |
0e144ba7 AM |
2783 | if (!(*info->callbacks |
2784 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
0a1b45a2 AM |
2785 | return false; |
2786 | *pneeded = true; | |
2787 | return true; | |
e135f41b NC |
2788 | } |
2789 | /* Turn the current link symbol into a common | |
2790 | symbol. It is already on the undefs list. */ | |
2791 | h->type = bfd_link_hash_common; | |
116c20d2 NC |
2792 | h->u.c.p = bfd_hash_allocate (&info->hash->table, |
2793 | sizeof (struct bfd_link_hash_common_entry)); | |
e135f41b | 2794 | if (h->u.c.p == NULL) |
0a1b45a2 | 2795 | return false; |
e135f41b NC |
2796 | |
2797 | h->u.c.size = value; | |
2798 | ||
2799 | /* FIXME: This isn't quite right. The maximum | |
2800 | alignment of a common symbol should be set by the | |
2801 | architecture of the output file, not of the input | |
2802 | file. */ | |
2803 | power = bfd_log2 (value); | |
2804 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
2805 | power = bfd_get_arch_info (abfd)->section_align_power; | |
2806 | h->u.c.p->alignment_power = power; | |
2807 | ||
2808 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
2809 | "COMMON"); | |
2810 | } | |
2811 | else | |
2812 | { | |
2813 | /* Adjust the size of the common symbol if | |
2814 | necessary. */ | |
2815 | if (value > h->u.c.size) | |
2816 | h->u.c.size = value; | |
2817 | } | |
2818 | } | |
2819 | } | |
2820 | } | |
2821 | ||
2822 | /* We do not need this object file. */ | |
0a1b45a2 | 2823 | return true; |
e135f41b NC |
2824 | } |
2825 | ||
116c20d2 NC |
2826 | /* Check a single archive element to see if we need to include it in |
2827 | the link. *PNEEDED is set according to whether this element is | |
2828 | needed in the link or not. This is called from | |
2829 | _bfd_generic_link_add_archive_symbols. */ | |
2830 | ||
0a1b45a2 | 2831 | static bool |
116c20d2 NC |
2832 | aout_link_check_archive_element (bfd *abfd, |
2833 | struct bfd_link_info *info, | |
13e570f8 AM |
2834 | struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED, |
2835 | const char *name ATTRIBUTE_UNUSED, | |
0a1b45a2 | 2836 | bool *pneeded) |
116c20d2 | 2837 | { |
0e144ba7 | 2838 | bfd *oldbfd; |
0a1b45a2 | 2839 | bool needed; |
5d3236ee | 2840 | |
0e144ba7 | 2841 | if (!aout_get_external_symbols (abfd)) |
0a1b45a2 | 2842 | return false; |
116c20d2 | 2843 | |
0e144ba7 AM |
2844 | oldbfd = abfd; |
2845 | if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd)) | |
0a1b45a2 | 2846 | return false; |
116c20d2 | 2847 | |
0e144ba7 AM |
2848 | needed = *pneeded; |
2849 | if (needed) | |
116c20d2 | 2850 | { |
5d3236ee DK |
2851 | /* Potentially, the add_archive_element hook may have set a |
2852 | substitute BFD for us. */ | |
0e144ba7 AM |
2853 | if (abfd != oldbfd) |
2854 | { | |
2855 | if (!info->keep_memory | |
2856 | && !aout_link_free_symbols (oldbfd)) | |
0a1b45a2 | 2857 | return false; |
0e144ba7 | 2858 | if (!aout_get_external_symbols (abfd)) |
0a1b45a2 | 2859 | return false; |
0e144ba7 AM |
2860 | } |
2861 | if (!aout_link_add_symbols (abfd, info)) | |
0a1b45a2 | 2862 | return false; |
116c20d2 NC |
2863 | } |
2864 | ||
0e144ba7 | 2865 | if (!info->keep_memory || !needed) |
116c20d2 | 2866 | { |
0e144ba7 | 2867 | if (!aout_link_free_symbols (abfd)) |
0a1b45a2 | 2868 | return false; |
116c20d2 NC |
2869 | } |
2870 | ||
0a1b45a2 | 2871 | return true; |
116c20d2 NC |
2872 | } |
2873 | ||
e135f41b NC |
2874 | /* Add all symbols from an object file to the hash table. */ |
2875 | ||
0a1b45a2 | 2876 | static bool |
116c20d2 | 2877 | aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
e135f41b | 2878 | { |
0a1b45a2 | 2879 | bool (*add_one_symbol) |
116c20d2 | 2880 | (struct bfd_link_info *, bfd *, const char *, flagword, asection *, |
0a1b45a2 | 2881 | bfd_vma, const char *, bool, bool, struct bfd_link_hash_entry **); |
e135f41b NC |
2882 | struct external_nlist *syms; |
2883 | bfd_size_type sym_count; | |
2884 | char *strings; | |
0a1b45a2 | 2885 | bool copy; |
e135f41b | 2886 | struct aout_link_hash_entry **sym_hash; |
116c20d2 | 2887 | struct external_nlist *p; |
e135f41b NC |
2888 | struct external_nlist *pend; |
2889 | ||
2890 | syms = obj_aout_external_syms (abfd); | |
2891 | sym_count = obj_aout_external_sym_count (abfd); | |
2892 | strings = obj_aout_external_strings (abfd); | |
2893 | if (info->keep_memory) | |
0a1b45a2 | 2894 | copy = false; |
e135f41b | 2895 | else |
0a1b45a2 | 2896 | copy = true; |
e135f41b NC |
2897 | |
2898 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) | |
2899 | { | |
2900 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) | |
2901 | (abfd, info, &syms, &sym_count, &strings))) | |
0a1b45a2 | 2902 | return false; |
e135f41b NC |
2903 | } |
2904 | ||
2905 | /* We keep a list of the linker hash table entries that correspond | |
2906 | to particular symbols. We could just look them up in the hash | |
2907 | table, but keeping the list is more efficient. Perhaps this | |
2908 | should be conditional on info->keep_memory. */ | |
116c20d2 NC |
2909 | sym_hash = bfd_alloc (abfd, |
2910 | sym_count * sizeof (struct aout_link_hash_entry *)); | |
e135f41b | 2911 | if (sym_hash == NULL && sym_count != 0) |
0a1b45a2 | 2912 | return false; |
e135f41b NC |
2913 | obj_aout_sym_hashes (abfd) = sym_hash; |
2914 | ||
2915 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; | |
2916 | if (add_one_symbol == NULL) | |
2917 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
2918 | ||
2919 | p = syms; | |
2920 | pend = p + sym_count; | |
2921 | for (; p < pend; p++, sym_hash++) | |
2922 | { | |
2923 | int type; | |
2924 | const char *name; | |
2925 | bfd_vma value; | |
2926 | asection *section; | |
2927 | flagword flags; | |
2928 | const char *string; | |
2929 | ||
2930 | *sym_hash = NULL; | |
2931 | ||
dc810e39 | 2932 | type = H_GET_8 (abfd, p->e_type); |
e135f41b | 2933 | |
31af1e68 SC |
2934 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
2935 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) | |
0a1b45a2 | 2936 | return false; |
e135f41b | 2937 | name = strings + GET_WORD (abfd, p->e_strx); |
9c65eeac NC |
2938 | |
2939 | /* Ignore debugging symbols. */ | |
2940 | if (is_stab (type, name)) | |
2941 | continue; | |
2942 | ||
e135f41b NC |
2943 | value = GET_WORD (abfd, p->e_value); |
2944 | flags = BSF_GLOBAL; | |
2945 | string = NULL; | |
2946 | switch (type) | |
2947 | { | |
2948 | default: | |
a975c88e SC |
2949 | /* Shouldn't be any types not covered. */ |
2950 | BFD_ASSERT (0); | |
0c98115d | 2951 | continue; |
e135f41b NC |
2952 | |
2953 | case N_UNDF: | |
2954 | case N_ABS: | |
2955 | case N_TEXT: | |
2956 | case N_DATA: | |
2957 | case N_BSS: | |
2958 | case N_REG: | |
2959 | case N_FN: | |
2960 | /* Ignore symbols that are not externally visible. */ | |
2961 | continue; | |
2962 | ||
2963 | case N_UNDF | N_EXT: | |
2964 | if (value == 0) | |
2965 | { | |
2966 | section = bfd_und_section_ptr; | |
2967 | flags = 0; | |
2968 | } | |
2969 | else | |
2970 | section = bfd_com_section_ptr; | |
2971 | break; | |
2972 | case N_ABS | N_EXT: | |
2973 | section = bfd_abs_section_ptr; | |
2974 | break; | |
2975 | case N_TEXT | N_EXT: | |
2976 | section = obj_textsec (abfd); | |
fd361982 | 2977 | value -= bfd_section_vma (section); |
e135f41b NC |
2978 | break; |
2979 | case N_DATA | N_EXT: | |
2980 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
2981 | translate_from_native_sym_flags. */ | |
2982 | section = obj_datasec (abfd); | |
fd361982 | 2983 | value -= bfd_section_vma (section); |
e135f41b NC |
2984 | break; |
2985 | case N_BSS | N_EXT: | |
2986 | section = obj_bsssec (abfd); | |
fd361982 | 2987 | value -= bfd_section_vma (section); |
e135f41b NC |
2988 | break; |
2989 | } | |
2990 | ||
2991 | if (! ((*add_one_symbol) | |
0a1b45a2 | 2992 | (info, abfd, name, flags, section, value, string, copy, false, |
e135f41b | 2993 | (struct bfd_link_hash_entry **) sym_hash))) |
0a1b45a2 | 2994 | return false; |
e135f41b NC |
2995 | |
2996 | /* Restrict the maximum alignment of a common symbol based on | |
2997 | the architecture, since a.out has no way to represent | |
2998 | alignment requirements of a section in a .o file. FIXME: | |
2999 | This isn't quite right: it should use the architecture of the | |
3000 | output file, not the input files. */ | |
3001 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
3002 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
3003 | bfd_get_arch_info (abfd)->section_align_power)) | |
3004 | (*sym_hash)->root.u.c.p->alignment_power = | |
3005 | bfd_get_arch_info (abfd)->section_align_power; | |
3006 | ||
3007 | /* If this is a set symbol, and we are not building sets, then | |
3008 | it is possible for the hash entry to not have been set. In | |
3009 | such a case, treat the symbol as not globally defined. */ | |
3010 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3011 | { | |
3012 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3013 | *sym_hash = NULL; | |
3014 | } | |
3015 | } | |
3016 | ||
0a1b45a2 | 3017 | return true; |
e135f41b NC |
3018 | } |
3019 | \f | |
116c20d2 | 3020 | /* Look up an entry in an the header file hash table. */ |
e135f41b NC |
3021 | |
3022 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
3023 | ((struct aout_link_includes_entry *) \ | |
3024 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
3025 | ||
e135f41b NC |
3026 | /* The function to create a new entry in the header file hash table. */ |
3027 | ||
3028 | static struct bfd_hash_entry * | |
116c20d2 NC |
3029 | aout_link_includes_newfunc (struct bfd_hash_entry *entry, |
3030 | struct bfd_hash_table *table, | |
3031 | const char *string) | |
e135f41b | 3032 | { |
116c20d2 | 3033 | struct aout_link_includes_entry * ret = |
e135f41b NC |
3034 | (struct aout_link_includes_entry *) entry; |
3035 | ||
3036 | /* Allocate the structure if it has not already been allocated by a | |
3037 | subclass. */ | |
116c20d2 NC |
3038 | if (ret == NULL) |
3039 | ret = bfd_hash_allocate (table, | |
3040 | sizeof (struct aout_link_includes_entry)); | |
3041 | if (ret == NULL) | |
3042 | return NULL; | |
e135f41b NC |
3043 | |
3044 | /* Call the allocation method of the superclass. */ | |
3045 | ret = ((struct aout_link_includes_entry *) | |
3046 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
3047 | if (ret) | |
116c20d2 NC |
3048 | /* Set local fields. */ |
3049 | ret->totals = NULL; | |
e135f41b NC |
3050 | |
3051 | return (struct bfd_hash_entry *) ret; | |
3052 | } | |
3053 | ||
31af1e68 SC |
3054 | /* Write out a symbol that was not associated with an a.out input |
3055 | object. */ | |
3056 | ||
0a1b45a2 | 3057 | static bool |
7686d77d | 3058 | aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data) |
e135f41b | 3059 | { |
7686d77d | 3060 | struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh; |
57402f1e | 3061 | struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data; |
116c20d2 NC |
3062 | bfd *output_bfd; |
3063 | int type; | |
3064 | bfd_vma val; | |
3065 | struct external_nlist outsym; | |
3066 | bfd_size_type indx; | |
986f0783 | 3067 | size_t amt; |
e135f41b | 3068 | |
116c20d2 NC |
3069 | if (h->root.type == bfd_link_hash_warning) |
3070 | { | |
3071 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
3072 | if (h->root.type == bfd_link_hash_new) | |
0a1b45a2 | 3073 | return true; |
116c20d2 | 3074 | } |
e135f41b | 3075 | |
57402f1e | 3076 | output_bfd = flaginfo->output_bfd; |
e135f41b | 3077 | |
116c20d2 | 3078 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) |
e135f41b | 3079 | { |
116c20d2 | 3080 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) |
57402f1e | 3081 | (output_bfd, flaginfo->info, h))) |
e135f41b | 3082 | { |
116c20d2 NC |
3083 | /* FIXME: No way to handle errors. */ |
3084 | abort (); | |
e135f41b | 3085 | } |
116c20d2 | 3086 | } |
e135f41b | 3087 | |
116c20d2 | 3088 | if (h->written) |
0a1b45a2 | 3089 | return true; |
e135f41b | 3090 | |
0a1b45a2 | 3091 | h->written = true; |
e135f41b | 3092 | |
116c20d2 NC |
3093 | /* An indx of -2 means the symbol must be written. */ |
3094 | if (h->indx != -2 | |
57402f1e NC |
3095 | && (flaginfo->info->strip == strip_all |
3096 | || (flaginfo->info->strip == strip_some | |
3097 | && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string, | |
0a1b45a2 AM |
3098 | false, false) == NULL))) |
3099 | return true; | |
e135f41b | 3100 | |
116c20d2 | 3101 | switch (h->root.type) |
e135f41b | 3102 | { |
116c20d2 NC |
3103 | default: |
3104 | abort (); | |
3105 | /* Avoid variable not initialized warnings. */ | |
0a1b45a2 | 3106 | return true; |
116c20d2 NC |
3107 | case bfd_link_hash_new: |
3108 | /* This can happen for set symbols when sets are not being | |
07d6d2b8 | 3109 | built. */ |
0a1b45a2 | 3110 | return true; |
116c20d2 NC |
3111 | case bfd_link_hash_undefined: |
3112 | type = N_UNDF | N_EXT; | |
3113 | val = 0; | |
3114 | break; | |
3115 | case bfd_link_hash_defined: | |
3116 | case bfd_link_hash_defweak: | |
3117 | { | |
3118 | asection *sec; | |
3119 | ||
3120 | sec = h->root.u.def.section->output_section; | |
3121 | BFD_ASSERT (bfd_is_abs_section (sec) | |
3122 | || sec->owner == output_bfd); | |
3123 | if (sec == obj_textsec (output_bfd)) | |
3124 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
3125 | else if (sec == obj_datasec (output_bfd)) | |
3126 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
3127 | else if (sec == obj_bsssec (output_bfd)) | |
3128 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
3129 | else | |
3130 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
3131 | type |= N_EXT; | |
3132 | val = (h->root.u.def.value | |
3133 | + sec->vma | |
3134 | + h->root.u.def.section->output_offset); | |
3135 | } | |
3136 | break; | |
3137 | case bfd_link_hash_common: | |
3138 | type = N_UNDF | N_EXT; | |
3139 | val = h->root.u.c.size; | |
3140 | break; | |
3141 | case bfd_link_hash_undefweak: | |
3142 | type = N_WEAKU; | |
3143 | val = 0; | |
1a0670f3 | 3144 | /* Fall through. */ |
116c20d2 NC |
3145 | case bfd_link_hash_indirect: |
3146 | case bfd_link_hash_warning: | |
3147 | /* FIXME: Ignore these for now. The circumstances under which | |
3148 | they should be written out are not clear to me. */ | |
0a1b45a2 | 3149 | return true; |
e135f41b NC |
3150 | } |
3151 | ||
116c20d2 | 3152 | H_PUT_8 (output_bfd, type, outsym.e_type); |
a975c88e | 3153 | H_PUT_8 (output_bfd, 0, outsym.e_ovly); |
57402f1e | 3154 | indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string, |
0a1b45a2 | 3155 | false); |
116c20d2 NC |
3156 | if (indx == (bfd_size_type) -1) |
3157 | /* FIXME: No way to handle errors. */ | |
3158 | abort (); | |
e135f41b | 3159 | |
a975c88e | 3160 | PUT_WORD (output_bfd, 0, outsym.e_desc); |
116c20d2 NC |
3161 | PUT_WORD (output_bfd, indx, outsym.e_strx); |
3162 | PUT_WORD (output_bfd, val, outsym.e_value); | |
e135f41b | 3163 | |
116c20d2 | 3164 | amt = EXTERNAL_NLIST_SIZE; |
57402f1e | 3165 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0 |
116c20d2 NC |
3166 | || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt) |
3167 | /* FIXME: No way to handle errors. */ | |
3168 | abort (); | |
e135f41b | 3169 | |
57402f1e | 3170 | flaginfo->symoff += amt; |
116c20d2 NC |
3171 | h->indx = obj_aout_external_sym_count (output_bfd); |
3172 | ++obj_aout_external_sym_count (output_bfd); | |
e135f41b | 3173 | |
0a1b45a2 | 3174 | return true; |
116c20d2 | 3175 | } |
e135f41b | 3176 | |
116c20d2 | 3177 | /* Handle a link order which is supposed to generate a reloc. */ |
e135f41b | 3178 | |
0a1b45a2 | 3179 | static bool |
57402f1e | 3180 | aout_link_reloc_link_order (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3181 | asection *o, |
3182 | struct bfd_link_order *p) | |
3183 | { | |
3184 | struct bfd_link_order_reloc *pr; | |
3185 | int r_index; | |
3186 | int r_extern; | |
3187 | reloc_howto_type *howto; | |
3188 | file_ptr *reloff_ptr; | |
3189 | struct reloc_std_external srel; | |
3190 | void * rel_ptr; | |
3191 | bfd_size_type rel_size; | |
e135f41b | 3192 | |
116c20d2 | 3193 | pr = p->u.reloc.p; |
e135f41b | 3194 | |
116c20d2 | 3195 | if (p->type == bfd_section_reloc_link_order) |
e135f41b | 3196 | { |
116c20d2 NC |
3197 | r_extern = 0; |
3198 | if (bfd_is_abs_section (pr->u.section)) | |
3199 | r_index = N_ABS | N_EXT; | |
3200 | else | |
e135f41b | 3201 | { |
57402f1e | 3202 | BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd); |
116c20d2 | 3203 | r_index = pr->u.section->target_index; |
e135f41b NC |
3204 | } |
3205 | } | |
116c20d2 | 3206 | else |
e135f41b | 3207 | { |
116c20d2 | 3208 | struct aout_link_hash_entry *h; |
e135f41b | 3209 | |
116c20d2 NC |
3210 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); |
3211 | r_extern = 1; | |
3212 | h = ((struct aout_link_hash_entry *) | |
57402f1e | 3213 | bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info, |
0a1b45a2 | 3214 | pr->u.name, false, false, true)); |
116c20d2 NC |
3215 | if (h != NULL |
3216 | && h->indx >= 0) | |
3217 | r_index = h->indx; | |
3218 | else if (h != NULL) | |
3219 | { | |
3220 | /* We decided to strip this symbol, but it turns out that we | |
3221 | can't. Note that we lose the other and desc information | |
3222 | here. I don't think that will ever matter for a global | |
3223 | symbol. */ | |
3224 | h->indx = -2; | |
0a1b45a2 | 3225 | h->written = false; |
57402f1e | 3226 | if (!aout_link_write_other_symbol (&h->root.root, flaginfo)) |
0a1b45a2 | 3227 | return false; |
116c20d2 | 3228 | r_index = h->indx; |
e135f41b | 3229 | } |
116c20d2 | 3230 | else |
e135f41b | 3231 | { |
1a72702b AM |
3232 | (*flaginfo->info->callbacks->unattached_reloc) |
3233 | (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0); | |
116c20d2 | 3234 | r_index = 0; |
e135f41b NC |
3235 | } |
3236 | } | |
3237 | ||
57402f1e | 3238 | howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc); |
116c20d2 | 3239 | if (howto == 0) |
e135f41b | 3240 | { |
116c20d2 | 3241 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 3242 | return false; |
e135f41b NC |
3243 | } |
3244 | ||
57402f1e NC |
3245 | if (o == obj_textsec (flaginfo->output_bfd)) |
3246 | reloff_ptr = &flaginfo->treloff; | |
3247 | else if (o == obj_datasec (flaginfo->output_bfd)) | |
3248 | reloff_ptr = &flaginfo->dreloff; | |
116c20d2 NC |
3249 | else |
3250 | abort (); | |
e135f41b | 3251 | |
116c20d2 | 3252 | #ifdef MY_put_reloc |
57402f1e | 3253 | MY_put_reloc(flaginfo->output_bfd, r_extern, r_index, p->offset, howto, |
116c20d2 NC |
3254 | &srel); |
3255 | #else | |
3256 | { | |
3257 | int r_pcrel; | |
3258 | int r_baserel; | |
3259 | int r_jmptable; | |
3260 | int r_relative; | |
3261 | int r_length; | |
e135f41b | 3262 | |
116c20d2 | 3263 | fprintf (stderr, "TODO: line %d in bfd/pdp11.c\n", __LINE__); |
e135f41b | 3264 | |
116c20d2 NC |
3265 | r_pcrel = howto->pc_relative; |
3266 | r_baserel = (howto->type & 8) != 0; | |
3267 | r_jmptable = (howto->type & 16) != 0; | |
3268 | r_relative = (howto->type & 32) != 0; | |
57698478 | 3269 | r_length = bfd_log2 (bfd_get_reloc_size (howto)); |
e135f41b | 3270 | |
57402f1e NC |
3271 | PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address); |
3272 | if (bfd_header_big_endian (flaginfo->output_bfd)) | |
116c20d2 NC |
3273 | { |
3274 | srel.r_index[0] = r_index >> 16; | |
3275 | srel.r_index[1] = r_index >> 8; | |
3276 | srel.r_index[2] = r_index; | |
3277 | srel.r_type[0] = | |
3278 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
3279 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
3280 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
3281 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
3282 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
3283 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
3284 | } | |
3285 | else | |
3286 | { | |
3287 | srel.r_index[2] = r_index >> 16; | |
3288 | srel.r_index[1] = r_index >> 8; | |
3289 | srel.r_index[0] = r_index; | |
3290 | srel.r_type[0] = | |
3291 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
3292 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
3293 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
3294 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
3295 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
3296 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
3297 | } | |
3298 | } | |
3299 | #endif | |
3300 | rel_ptr = (void *) &srel; | |
e135f41b | 3301 | |
116c20d2 NC |
3302 | /* We have to write the addend into the object file, since |
3303 | standard a.out relocs are in place. It would be more | |
3304 | reliable if we had the current contents of the file here, | |
3305 | rather than assuming zeroes, but we can't read the file since | |
3306 | it was opened using bfd_openw. */ | |
3307 | if (pr->addend != 0) | |
e135f41b | 3308 | { |
116c20d2 NC |
3309 | bfd_size_type size; |
3310 | bfd_reloc_status_type r; | |
3311 | bfd_byte *buf; | |
0a1b45a2 | 3312 | bool ok; |
116c20d2 NC |
3313 | |
3314 | size = bfd_get_reloc_size (howto); | |
3315 | buf = bfd_zmalloc (size); | |
6346d5ca | 3316 | if (buf == NULL && size != 0) |
0a1b45a2 | 3317 | return false; |
57402f1e | 3318 | r = MY_relocate_contents (howto, flaginfo->output_bfd, |
116c20d2 NC |
3319 | pr->addend, buf); |
3320 | switch (r) | |
3321 | { | |
3322 | case bfd_reloc_ok: | |
3323 | break; | |
3324 | default: | |
3325 | case bfd_reloc_outofrange: | |
3326 | abort (); | |
3327 | case bfd_reloc_overflow: | |
1a72702b AM |
3328 | (*flaginfo->info->callbacks->reloc_overflow) |
3329 | (flaginfo->info, NULL, | |
3330 | (p->type == bfd_section_reloc_link_order | |
fd361982 | 3331 | ? bfd_section_name (pr->u.section) |
1a72702b AM |
3332 | : pr->u.name), |
3333 | howto->name, pr->addend, NULL, | |
3334 | (asection *) NULL, (bfd_vma) 0); | |
116c20d2 NC |
3335 | break; |
3336 | } | |
57402f1e | 3337 | ok = bfd_set_section_contents (flaginfo->output_bfd, o, |
116c20d2 NC |
3338 | (void *) buf, |
3339 | (file_ptr) p->offset, | |
3340 | size); | |
3341 | free (buf); | |
3342 | if (! ok) | |
0a1b45a2 | 3343 | return false; |
e135f41b NC |
3344 | } |
3345 | ||
57402f1e NC |
3346 | rel_size = obj_reloc_entry_size (flaginfo->output_bfd); |
3347 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
3348 | || bfd_bwrite (rel_ptr, rel_size, flaginfo->output_bfd) != rel_size) | |
0a1b45a2 | 3349 | return false; |
e135f41b | 3350 | |
116c20d2 | 3351 | *reloff_ptr += rel_size; |
e135f41b | 3352 | |
116c20d2 NC |
3353 | /* Assert that the relocs have not run into the symbols, and that n |
3354 | the text relocs have not run into the data relocs. */ | |
57402f1e NC |
3355 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3356 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 3357 | || (*reloff_ptr |
57402f1e | 3358 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
e135f41b | 3359 | |
0a1b45a2 | 3360 | return true; |
116c20d2 | 3361 | } |
e135f41b | 3362 | |
116c20d2 NC |
3363 | /* Get the section corresponding to a reloc index. */ |
3364 | ||
3365 | static inline asection * | |
3366 | aout_reloc_type_to_section (bfd *abfd, int type) | |
3367 | { | |
3368 | switch (type) | |
e135f41b | 3369 | { |
116c20d2 NC |
3370 | case RTEXT: return obj_textsec (abfd); |
3371 | case RDATA: return obj_datasec (abfd); | |
3372 | case RBSS: return obj_bsssec (abfd); | |
3373 | case RABS: return bfd_abs_section_ptr; | |
3374 | case REXT: return bfd_und_section_ptr; | |
3375 | default: abort (); | |
e135f41b | 3376 | } |
e135f41b NC |
3377 | } |
3378 | ||
0a1b45a2 | 3379 | static bool |
57402f1e | 3380 | pdp11_aout_link_input_section (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3381 | bfd *input_bfd, |
3382 | asection *input_section, | |
3383 | bfd_byte *relocs, | |
3384 | bfd_size_type rel_size, | |
3385 | bfd_byte *contents) | |
e135f41b | 3386 | { |
0a1b45a2 | 3387 | bool (*check_dynamic_reloc) |
116c20d2 | 3388 | (struct bfd_link_info *, bfd *, asection *, |
0a1b45a2 | 3389 | struct aout_link_hash_entry *, void *, bfd_byte *, bool *, bfd_vma *); |
e135f41b | 3390 | bfd *output_bfd; |
0a1b45a2 | 3391 | bool relocatable; |
116c20d2 | 3392 | struct external_nlist *syms; |
e135f41b | 3393 | char *strings; |
116c20d2 | 3394 | struct aout_link_hash_entry **sym_hashes; |
e135f41b | 3395 | int *symbol_map; |
116c20d2 NC |
3396 | bfd_byte *rel; |
3397 | bfd_byte *rel_end; | |
e135f41b | 3398 | |
57402f1e | 3399 | output_bfd = flaginfo->output_bfd; |
116c20d2 | 3400 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
e135f41b | 3401 | |
116c20d2 NC |
3402 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_SIZE); |
3403 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
3404 | == output_bfd->xvec->header_byteorder); | |
e135f41b | 3405 | |
0e1862bb | 3406 | relocatable = bfd_link_relocatable (flaginfo->info); |
116c20d2 NC |
3407 | syms = obj_aout_external_syms (input_bfd); |
3408 | strings = obj_aout_external_strings (input_bfd); | |
3409 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 3410 | symbol_map = flaginfo->symbol_map; |
116c20d2 | 3411 | |
116c20d2 NC |
3412 | rel = relocs; |
3413 | rel_end = rel + rel_size; | |
3414 | for (; rel < rel_end; rel += RELOC_SIZE) | |
e135f41b | 3415 | { |
116c20d2 NC |
3416 | bfd_vma r_addr; |
3417 | int r_index; | |
3418 | int r_type; | |
3419 | int r_pcrel; | |
3420 | int r_extern; | |
3421 | reloc_howto_type *howto; | |
3422 | struct aout_link_hash_entry *h = NULL; | |
3423 | bfd_vma relocation; | |
3424 | bfd_reloc_status_type r; | |
3425 | int reloc_entry; | |
e135f41b | 3426 | |
116c20d2 NC |
3427 | reloc_entry = GET_WORD (input_bfd, (void *) rel); |
3428 | if (reloc_entry == 0) | |
e135f41b NC |
3429 | continue; |
3430 | ||
116c20d2 NC |
3431 | { |
3432 | unsigned int howto_idx; | |
e135f41b | 3433 | |
116c20d2 NC |
3434 | r_index = (reloc_entry & RIDXMASK) >> 4; |
3435 | r_type = reloc_entry & RTYPE; | |
3436 | r_pcrel = reloc_entry & RELFLG; | |
3437 | r_addr = (char *) rel - (char *) relocs; | |
e135f41b | 3438 | |
116c20d2 | 3439 | r_extern = (r_type == REXT); |
e135f41b | 3440 | |
116c20d2 | 3441 | howto_idx = r_pcrel; |
31af1e68 SC |
3442 | if (howto_idx < TABLE_SIZE (howto_table_pdp11)) |
3443 | howto = howto_table_pdp11 + howto_idx; | |
3444 | else | |
3445 | { | |
3446 | _bfd_error_handler (_("%pB: unsupported relocation type"), | |
3447 | input_bfd); | |
3448 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 3449 | return false; |
31af1e68 | 3450 | } |
116c20d2 NC |
3451 | } |
3452 | ||
3453 | if (relocatable) | |
e135f41b | 3454 | { |
116c20d2 NC |
3455 | /* We are generating a relocatable output file, and must |
3456 | modify the reloc accordingly. */ | |
3457 | if (r_extern) | |
3458 | { | |
3459 | /* If we know the symbol this relocation is against, | |
3460 | convert it into a relocation against a section. This | |
3461 | is what the native linker does. */ | |
3462 | h = sym_hashes[r_index]; | |
3463 | if (h != NULL | |
3464 | && (h->root.type == bfd_link_hash_defined | |
3465 | || h->root.type == bfd_link_hash_defweak)) | |
3466 | { | |
3467 | asection *output_section; | |
e135f41b | 3468 | |
116c20d2 NC |
3469 | /* Compute a new r_index. */ |
3470 | output_section = h->root.u.def.section->output_section; | |
e135f41b | 3471 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 | 3472 | r_type = N_TEXT; |
e135f41b | 3473 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 | 3474 | r_type = N_DATA; |
e135f41b | 3475 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 | 3476 | r_type = N_BSS; |
e135f41b | 3477 | else |
116c20d2 | 3478 | r_type = N_ABS; |
e135f41b | 3479 | |
116c20d2 NC |
3480 | /* Add the symbol value and the section VMA to the |
3481 | addend stored in the contents. */ | |
3482 | relocation = (h->root.u.def.value | |
3483 | + output_section->vma | |
3484 | + h->root.u.def.section->output_offset); | |
e135f41b | 3485 | } |
116c20d2 | 3486 | else |
e135f41b | 3487 | { |
116c20d2 NC |
3488 | /* We must change r_index according to the symbol |
3489 | map. */ | |
3490 | r_index = symbol_map[r_index]; | |
e135f41b | 3491 | |
116c20d2 | 3492 | if (r_index == -1) |
e135f41b | 3493 | { |
116c20d2 | 3494 | if (h != NULL) |
e135f41b | 3495 | { |
116c20d2 | 3496 | /* We decided to strip this symbol, but it |
07d6d2b8 AM |
3497 | turns out that we can't. Note that we |
3498 | lose the other and desc information here. | |
3499 | I don't think that will ever matter for a | |
3500 | global symbol. */ | |
116c20d2 | 3501 | if (h->indx < 0) |
e135f41b | 3502 | { |
116c20d2 | 3503 | h->indx = -2; |
0a1b45a2 | 3504 | h->written = false; |
7686d77d | 3505 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 3506 | flaginfo)) |
0a1b45a2 | 3507 | return false; |
e135f41b | 3508 | } |
116c20d2 NC |
3509 | r_index = h->indx; |
3510 | } | |
3511 | else | |
3512 | { | |
3513 | const char *name; | |
3514 | ||
3515 | name = strings + GET_WORD (input_bfd, | |
3516 | syms[r_index].e_strx); | |
1a72702b AM |
3517 | (*flaginfo->info->callbacks->unattached_reloc) |
3518 | (flaginfo->info, name, input_bfd, input_section, | |
3519 | r_addr); | |
116c20d2 | 3520 | r_index = 0; |
e135f41b NC |
3521 | } |
3522 | } | |
116c20d2 NC |
3523 | |
3524 | relocation = 0; | |
e135f41b NC |
3525 | } |
3526 | ||
116c20d2 NC |
3527 | /* Write out the new r_index value. */ |
3528 | reloc_entry = GET_WORD (input_bfd, rel); | |
3529 | reloc_entry &= RIDXMASK; | |
3530 | reloc_entry |= r_index << 4; | |
3531 | PUT_WORD (input_bfd, reloc_entry, rel); | |
3532 | } | |
3533 | else | |
3534 | { | |
3535 | asection *section; | |
3536 | ||
3537 | /* This is a relocation against a section. We must | |
3538 | adjust by the amount that the section moved. */ | |
3539 | section = aout_reloc_type_to_section (input_bfd, r_type); | |
3540 | relocation = (section->output_section->vma | |
3541 | + section->output_offset | |
3542 | - section->vma); | |
3543 | } | |
3544 | ||
3545 | /* Change the address of the relocation. */ | |
3546 | fprintf (stderr, "TODO: change the address of the relocation\n"); | |
3547 | ||
3548 | /* Adjust a PC relative relocation by removing the reference | |
3549 | to the original address in the section and including the | |
3550 | reference to the new address. */ | |
3551 | if (r_pcrel) | |
3552 | relocation -= (input_section->output_section->vma | |
3553 | + input_section->output_offset | |
3554 | - input_section->vma); | |
3555 | ||
3556 | #ifdef MY_relocatable_reloc | |
3557 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
3558 | #endif | |
3559 | ||
3560 | if (relocation == 0) | |
3561 | r = bfd_reloc_ok; | |
3562 | else | |
3563 | r = MY_relocate_contents (howto, | |
3564 | input_bfd, relocation, | |
3565 | contents + r_addr); | |
3566 | } | |
3567 | else | |
3568 | { | |
0a1b45a2 | 3569 | bool hundef; |
116c20d2 NC |
3570 | |
3571 | /* We are generating an executable, and must do a full | |
3572 | relocation. */ | |
0a1b45a2 | 3573 | hundef = false; |
116c20d2 NC |
3574 | if (r_extern) |
3575 | { | |
3576 | h = sym_hashes[r_index]; | |
3577 | ||
3578 | if (h != NULL | |
3579 | && (h->root.type == bfd_link_hash_defined | |
3580 | || h->root.type == bfd_link_hash_defweak)) | |
e135f41b | 3581 | { |
116c20d2 NC |
3582 | relocation = (h->root.u.def.value |
3583 | + h->root.u.def.section->output_section->vma | |
3584 | + h->root.u.def.section->output_offset); | |
e135f41b | 3585 | } |
116c20d2 NC |
3586 | else if (h != NULL |
3587 | && h->root.type == bfd_link_hash_undefweak) | |
3588 | relocation = 0; | |
e135f41b NC |
3589 | else |
3590 | { | |
0a1b45a2 | 3591 | hundef = true; |
116c20d2 NC |
3592 | relocation = 0; |
3593 | } | |
3594 | } | |
3595 | else | |
3596 | { | |
3597 | asection *section; | |
e135f41b | 3598 | |
116c20d2 NC |
3599 | section = aout_reloc_type_to_section (input_bfd, r_type); |
3600 | relocation = (section->output_section->vma | |
3601 | + section->output_offset | |
3602 | - section->vma); | |
3603 | if (r_pcrel) | |
3604 | relocation += input_section->vma; | |
3605 | } | |
e135f41b | 3606 | |
116c20d2 NC |
3607 | if (check_dynamic_reloc != NULL) |
3608 | { | |
0a1b45a2 | 3609 | bool skip; |
e135f41b | 3610 | |
116c20d2 | 3611 | if (! ((*check_dynamic_reloc) |
57402f1e | 3612 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 | 3613 | (void *) rel, contents, &skip, &relocation))) |
0a1b45a2 | 3614 | return false; |
116c20d2 NC |
3615 | if (skip) |
3616 | continue; | |
3617 | } | |
3618 | ||
3619 | /* Now warn if a global symbol is undefined. We could not | |
07d6d2b8 AM |
3620 | do this earlier, because check_dynamic_reloc might want |
3621 | to skip this reloc. */ | |
0e1862bb | 3622 | if (hundef && ! bfd_link_pic (flaginfo->info)) |
116c20d2 NC |
3623 | { |
3624 | const char *name; | |
3625 | ||
3626 | if (h != NULL) | |
3627 | name = h->root.root.string; | |
3628 | else | |
3629 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
3630 | (*flaginfo->info->callbacks->undefined_symbol) |
3631 | (flaginfo->info, name, input_bfd, input_section, | |
0a1b45a2 | 3632 | r_addr, true); |
e135f41b | 3633 | } |
116c20d2 NC |
3634 | |
3635 | r = MY_final_link_relocate (howto, | |
3636 | input_bfd, input_section, | |
3637 | contents, r_addr, relocation, | |
3638 | (bfd_vma) 0); | |
e135f41b NC |
3639 | } |
3640 | ||
116c20d2 | 3641 | if (r != bfd_reloc_ok) |
e135f41b | 3642 | { |
116c20d2 NC |
3643 | switch (r) |
3644 | { | |
3645 | default: | |
3646 | case bfd_reloc_outofrange: | |
3647 | abort (); | |
3648 | case bfd_reloc_overflow: | |
3649 | { | |
3650 | const char *name; | |
3651 | ||
3652 | if (h != NULL) | |
3653 | name = NULL; | |
3654 | else if (r_extern) | |
3655 | name = strings + GET_WORD (input_bfd, | |
3656 | syms[r_index].e_strx); | |
3657 | else | |
3658 | { | |
3659 | asection *s; | |
3660 | ||
3661 | s = aout_reloc_type_to_section (input_bfd, r_type); | |
fd361982 | 3662 | name = bfd_section_name (s); |
116c20d2 | 3663 | } |
1a72702b AM |
3664 | (*flaginfo->info->callbacks->reloc_overflow) |
3665 | (flaginfo->info, (h ? &h->root : NULL), name, howto->name, | |
3666 | (bfd_vma) 0, input_bfd, input_section, r_addr); | |
116c20d2 NC |
3667 | } |
3668 | break; | |
3669 | } | |
e135f41b | 3670 | } |
e135f41b NC |
3671 | } |
3672 | ||
0a1b45a2 | 3673 | return true; |
116c20d2 NC |
3674 | } |
3675 | ||
3676 | /* Link an a.out section into the output file. */ | |
3677 | ||
0a1b45a2 | 3678 | static bool |
57402f1e | 3679 | aout_link_input_section (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3680 | bfd *input_bfd, |
3681 | asection *input_section, | |
3682 | file_ptr *reloff_ptr, | |
3683 | bfd_size_type rel_size) | |
3684 | { | |
3685 | bfd_size_type input_size; | |
3686 | void * relocs; | |
3687 | ||
3688 | /* Get the section contents. */ | |
3689 | input_size = input_section->size; | |
3690 | if (! bfd_get_section_contents (input_bfd, input_section, | |
57402f1e | 3691 | (void *) flaginfo->contents, |
116c20d2 | 3692 | (file_ptr) 0, input_size)) |
0a1b45a2 | 3693 | return false; |
116c20d2 NC |
3694 | |
3695 | /* Read in the relocs if we haven't already done it. */ | |
3696 | if (aout_section_data (input_section) != NULL | |
3697 | && aout_section_data (input_section)->relocs != NULL) | |
3698 | relocs = aout_section_data (input_section)->relocs; | |
3699 | else | |
e135f41b | 3700 | { |
57402f1e | 3701 | relocs = flaginfo->relocs; |
116c20d2 NC |
3702 | if (rel_size > 0) |
3703 | { | |
3704 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
3705 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) | |
0a1b45a2 | 3706 | return false; |
116c20d2 NC |
3707 | } |
3708 | } | |
e135f41b | 3709 | |
116c20d2 | 3710 | /* Relocate the section contents. */ |
57402f1e | 3711 | if (! pdp11_aout_link_input_section (flaginfo, input_bfd, input_section, |
116c20d2 | 3712 | (bfd_byte *) relocs, |
57402f1e | 3713 | rel_size, flaginfo->contents)) |
0a1b45a2 | 3714 | return false; |
116c20d2 NC |
3715 | |
3716 | /* Write out the section contents. */ | |
57402f1e | 3717 | if (! bfd_set_section_contents (flaginfo->output_bfd, |
116c20d2 | 3718 | input_section->output_section, |
57402f1e | 3719 | (void *) flaginfo->contents, |
116c20d2 NC |
3720 | (file_ptr) input_section->output_offset, |
3721 | input_size)) | |
0a1b45a2 | 3722 | return false; |
116c20d2 NC |
3723 | |
3724 | /* If we are producing relocatable output, the relocs were | |
3725 | modified, and we now write them out. */ | |
0e1862bb | 3726 | if (bfd_link_relocatable (flaginfo->info) && rel_size > 0) |
116c20d2 | 3727 | { |
57402f1e | 3728 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) |
0a1b45a2 | 3729 | return false; |
57402f1e | 3730 | if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size) |
0a1b45a2 | 3731 | return false; |
116c20d2 NC |
3732 | *reloff_ptr += rel_size; |
3733 | ||
3734 | /* Assert that the relocs have not run into the symbols, and | |
3735 | that if these are the text relocs they have not run into the | |
3736 | data relocs. */ | |
57402f1e NC |
3737 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3738 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 3739 | || (*reloff_ptr |
57402f1e | 3740 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
3741 | } |
3742 | ||
0a1b45a2 | 3743 | return true; |
116c20d2 NC |
3744 | } |
3745 | ||
3746 | /* Link an a.out input BFD into the output file. */ | |
3747 | ||
0a1b45a2 | 3748 | static bool |
57402f1e | 3749 | aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
116c20d2 | 3750 | { |
116c20d2 NC |
3751 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); |
3752 | ||
3753 | /* If this is a dynamic object, it may need special handling. */ | |
3754 | if ((input_bfd->flags & DYNAMIC) != 0 | |
3755 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
3756 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
57402f1e | 3757 | (flaginfo->info, input_bfd)); |
116c20d2 NC |
3758 | |
3759 | /* Get the symbols. We probably have them already, unless | |
57402f1e | 3760 | flaginfo->info->keep_memory is FALSE. */ |
116c20d2 | 3761 | if (! aout_get_external_symbols (input_bfd)) |
0a1b45a2 | 3762 | return false; |
116c20d2 | 3763 | |
116c20d2 | 3764 | /* Write out the symbols and get a map of the new indices. The map |
57402f1e NC |
3765 | is placed into flaginfo->symbol_map. */ |
3766 | if (! aout_link_write_symbols (flaginfo, input_bfd)) | |
0a1b45a2 | 3767 | return false; |
116c20d2 NC |
3768 | |
3769 | /* Relocate and write out the sections. These functions use the | |
3770 | symbol map created by aout_link_write_symbols. The linker_mark | |
3771 | field will be set if these sections are to be included in the | |
3772 | link, which will normally be the case. */ | |
3773 | if (obj_textsec (input_bfd)->linker_mark) | |
3774 | { | |
57402f1e | 3775 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 3776 | obj_textsec (input_bfd), |
57402f1e | 3777 | &flaginfo->treloff, |
116c20d2 | 3778 | exec_hdr (input_bfd)->a_trsize)) |
0a1b45a2 | 3779 | return false; |
116c20d2 NC |
3780 | } |
3781 | if (obj_datasec (input_bfd)->linker_mark) | |
3782 | { | |
57402f1e | 3783 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 3784 | obj_datasec (input_bfd), |
57402f1e | 3785 | &flaginfo->dreloff, |
116c20d2 | 3786 | exec_hdr (input_bfd)->a_drsize)) |
0a1b45a2 | 3787 | return false; |
116c20d2 NC |
3788 | } |
3789 | ||
3790 | /* If we are not keeping memory, we don't need the symbols any | |
3791 | longer. We still need them if we are keeping memory, because the | |
3792 | strings in the hash table point into them. */ | |
57402f1e | 3793 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
3794 | { |
3795 | if (! aout_link_free_symbols (input_bfd)) | |
0a1b45a2 | 3796 | return false; |
e135f41b NC |
3797 | } |
3798 | ||
0a1b45a2 | 3799 | return true; |
e135f41b NC |
3800 | } |
3801 | ||
116c20d2 NC |
3802 | /* Do the final link step. This is called on the output BFD. The |
3803 | INFO structure should point to a list of BFDs linked through the | |
c72f2fb2 | 3804 | link.next field which can be used to find each BFD which takes part |
116c20d2 NC |
3805 | in the output. Also, each section in ABFD should point to a list |
3806 | of bfd_link_order structures which list all the input sections for | |
3807 | the output section. */ | |
e135f41b | 3808 | |
0a1b45a2 | 3809 | bool |
116c20d2 NC |
3810 | NAME (aout, final_link) (bfd *abfd, |
3811 | struct bfd_link_info *info, | |
3812 | void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *)) | |
e135f41b | 3813 | { |
116c20d2 | 3814 | struct aout_final_link_info aout_info; |
0a1b45a2 | 3815 | bool includes_hash_initialized = false; |
116c20d2 NC |
3816 | bfd *sub; |
3817 | bfd_size_type trsize, drsize; | |
3818 | bfd_size_type max_contents_size; | |
3819 | bfd_size_type max_relocs_size; | |
3820 | bfd_size_type max_sym_count; | |
116c20d2 NC |
3821 | struct bfd_link_order *p; |
3822 | asection *o; | |
0a1b45a2 | 3823 | bool have_link_order_relocs; |
e135f41b | 3824 | |
0e1862bb | 3825 | if (bfd_link_pic (info)) |
116c20d2 | 3826 | abfd->flags |= DYNAMIC; |
e92d460e | 3827 | |
fa1477dc | 3828 | separate_i_d = info->separate_code; |
116c20d2 NC |
3829 | aout_info.info = info; |
3830 | aout_info.output_bfd = abfd; | |
3831 | aout_info.contents = NULL; | |
3832 | aout_info.relocs = NULL; | |
3833 | aout_info.symbol_map = NULL; | |
3834 | aout_info.output_syms = NULL; | |
e135f41b | 3835 | |
66eb6687 AM |
3836 | if (!bfd_hash_table_init_n (&aout_info.includes.root, |
3837 | aout_link_includes_newfunc, | |
3838 | sizeof (struct aout_link_includes_entry), | |
3839 | 251)) | |
116c20d2 | 3840 | goto error_return; |
0a1b45a2 | 3841 | includes_hash_initialized = true; |
116c20d2 NC |
3842 | |
3843 | /* Figure out the largest section size. Also, if generating | |
3844 | relocatable output, count the relocs. */ | |
3845 | trsize = 0; | |
3846 | drsize = 0; | |
3847 | max_contents_size = 0; | |
3848 | max_relocs_size = 0; | |
3849 | max_sym_count = 0; | |
c72f2fb2 | 3850 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
e135f41b | 3851 | { |
116c20d2 NC |
3852 | size_t sz; |
3853 | ||
0e1862bb | 3854 | if (bfd_link_relocatable (info)) |
e135f41b | 3855 | { |
116c20d2 NC |
3856 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3857 | { | |
3858 | trsize += exec_hdr (sub)->a_trsize; | |
3859 | drsize += exec_hdr (sub)->a_drsize; | |
3860 | } | |
3861 | else | |
3862 | { | |
3863 | /* FIXME: We need to identify the .text and .data sections | |
3864 | and call get_reloc_upper_bound and canonicalize_reloc to | |
3865 | work out the number of relocs needed, and then multiply | |
3866 | by the reloc size. */ | |
4eca0228 | 3867 | _bfd_error_handler |
695344c0 | 3868 | /* xgettext:c-format */ |
871b3ab2 | 3869 | (_("%pB: relocatable link from %s to %s not supported"), |
dae82561 | 3870 | abfd, sub->xvec->name, abfd->xvec->name); |
116c20d2 NC |
3871 | bfd_set_error (bfd_error_invalid_operation); |
3872 | goto error_return; | |
3873 | } | |
e135f41b | 3874 | } |
e135f41b | 3875 | |
116c20d2 NC |
3876 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3877 | { | |
3878 | sz = obj_textsec (sub)->size; | |
3879 | if (sz > max_contents_size) | |
3880 | max_contents_size = sz; | |
3881 | sz = obj_datasec (sub)->size; | |
3882 | if (sz > max_contents_size) | |
3883 | max_contents_size = sz; | |
e135f41b | 3884 | |
116c20d2 NC |
3885 | sz = exec_hdr (sub)->a_trsize; |
3886 | if (sz > max_relocs_size) | |
3887 | max_relocs_size = sz; | |
3888 | sz = exec_hdr (sub)->a_drsize; | |
3889 | if (sz > max_relocs_size) | |
3890 | max_relocs_size = sz; | |
e135f41b | 3891 | |
116c20d2 NC |
3892 | sz = obj_aout_external_sym_count (sub); |
3893 | if (sz > max_sym_count) | |
3894 | max_sym_count = sz; | |
3895 | } | |
e135f41b NC |
3896 | } |
3897 | ||
0e1862bb | 3898 | if (bfd_link_relocatable (info)) |
e135f41b | 3899 | { |
116c20d2 NC |
3900 | if (obj_textsec (abfd) != NULL) |
3901 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
8423293d | 3902 | ->map_head.link_order) |
116c20d2 NC |
3903 | * obj_reloc_entry_size (abfd)); |
3904 | if (obj_datasec (abfd) != NULL) | |
3905 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
8423293d | 3906 | ->map_head.link_order) |
116c20d2 | 3907 | * obj_reloc_entry_size (abfd)); |
e135f41b | 3908 | } |
e135f41b | 3909 | |
116c20d2 NC |
3910 | exec_hdr (abfd)->a_trsize = trsize; |
3911 | exec_hdr (abfd)->a_drsize = drsize; | |
3912 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); | |
3913 | ||
3914 | /* Adjust the section sizes and vmas according to the magic number. | |
3915 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
3916 | filepos for each section. */ | |
3a8c4a5b | 3917 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
116c20d2 NC |
3918 | goto error_return; |
3919 | ||
3920 | /* The relocation and symbol file positions differ among a.out | |
3921 | targets. We are passed a callback routine from the backend | |
3922 | specific code to handle this. | |
3923 | FIXME: At this point we do not know how much space the symbol | |
3924 | table will require. This will not work for any (nonstandard) | |
3925 | a.out target that needs to know the symbol table size before it | |
dc12032b | 3926 | can compute the relocation file positions. */ |
116c20d2 NC |
3927 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, |
3928 | &aout_info.symoff); | |
3929 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
3930 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
3931 | obj_sym_filepos (abfd) = aout_info.symoff; | |
3932 | ||
3933 | /* We keep a count of the symbols as we output them. */ | |
3934 | obj_aout_external_sym_count (abfd) = 0; | |
3935 | ||
3936 | /* We accumulate the string table as we write out the symbols. */ | |
3937 | aout_info.strtab = _bfd_stringtab_init (); | |
3938 | if (aout_info.strtab == NULL) | |
3939 | goto error_return; | |
3940 | ||
3941 | /* Allocate buffers to hold section contents and relocs. */ | |
3942 | aout_info.contents = bfd_malloc (max_contents_size); | |
3943 | aout_info.relocs = bfd_malloc (max_relocs_size); | |
3944 | aout_info.symbol_map = bfd_malloc (max_sym_count * sizeof (int *)); | |
3945 | aout_info.output_syms = bfd_malloc ((max_sym_count + 1) | |
3946 | * sizeof (struct external_nlist)); | |
3947 | if ((aout_info.contents == NULL && max_contents_size != 0) | |
3948 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
3949 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
3950 | || aout_info.output_syms == NULL) | |
3951 | goto error_return; | |
3952 | ||
3953 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
3954 | required by SunOS. Doing this here rather than in sunos.c is a | |
3955 | hack, but it's easier than exporting everything which would be | |
3956 | needed. */ | |
3957 | { | |
3958 | struct aout_link_hash_entry *h; | |
3959 | ||
3960 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
0a1b45a2 | 3961 | false, false, false); |
116c20d2 | 3962 | if (h != NULL) |
7686d77d | 3963 | aout_link_write_other_symbol (&h->root.root, &aout_info); |
116c20d2 NC |
3964 | } |
3965 | ||
3966 | /* The most time efficient way to do the link would be to read all | |
3967 | the input object files into memory and then sort out the | |
3968 | information into the output file. Unfortunately, that will | |
3969 | probably use too much memory. Another method would be to step | |
3970 | through everything that composes the text section and write it | |
3971 | out, and then everything that composes the data section and write | |
3972 | it out, and then write out the relocs, and then write out the | |
3973 | symbols. Unfortunately, that requires reading stuff from each | |
3974 | input file several times, and we will not be able to keep all the | |
3975 | input files open simultaneously, and reopening them will be slow. | |
3976 | ||
3977 | What we do is basically process one input file at a time. We do | |
3978 | everything we need to do with an input file once--copy over the | |
3979 | section contents, handle the relocation information, and write | |
3980 | out the symbols--and then we throw away the information we read | |
3981 | from it. This approach requires a lot of lseeks of the output | |
3982 | file, which is unfortunate but still faster than reopening a lot | |
3983 | of files. | |
3984 | ||
3985 | We use the output_has_begun field of the input BFDs to see | |
3986 | whether we have already handled it. */ | |
c72f2fb2 | 3987 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
0a1b45a2 | 3988 | sub->output_has_begun = false; |
116c20d2 NC |
3989 | |
3990 | /* Mark all sections which are to be included in the link. This | |
3991 | will normally be every section. We need to do this so that we | |
3992 | can identify any sections which the linker has decided to not | |
3993 | include. */ | |
3994 | for (o = abfd->sections; o != NULL; o = o->next) | |
e135f41b | 3995 | { |
8423293d | 3996 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
116c20d2 | 3997 | if (p->type == bfd_indirect_link_order) |
0a1b45a2 | 3998 | p->u.indirect.section->linker_mark = true; |
e135f41b NC |
3999 | } |
4000 | ||
0a1b45a2 | 4001 | have_link_order_relocs = false; |
116c20d2 NC |
4002 | for (o = abfd->sections; o != NULL; o = o->next) |
4003 | { | |
8423293d | 4004 | for (p = o->map_head.link_order; |
116c20d2 NC |
4005 | p != NULL; |
4006 | p = p->next) | |
4007 | { | |
4008 | if (p->type == bfd_indirect_link_order | |
4009 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
4010 | == bfd_target_aout_flavour)) | |
4011 | { | |
4012 | bfd *input_bfd; | |
e135f41b | 4013 | |
116c20d2 NC |
4014 | input_bfd = p->u.indirect.section->owner; |
4015 | if (! input_bfd->output_has_begun) | |
4016 | { | |
4017 | if (! aout_link_input_bfd (&aout_info, input_bfd)) | |
4018 | goto error_return; | |
0a1b45a2 | 4019 | input_bfd->output_has_begun = true; |
116c20d2 NC |
4020 | } |
4021 | } | |
4022 | else if (p->type == bfd_section_reloc_link_order | |
4023 | || p->type == bfd_symbol_reloc_link_order) | |
4024 | /* These are handled below. */ | |
0a1b45a2 | 4025 | have_link_order_relocs = true; |
116c20d2 NC |
4026 | else |
4027 | { | |
4028 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
4029 | goto error_return; | |
4030 | } | |
4031 | } | |
4032 | } | |
e135f41b | 4033 | |
116c20d2 | 4034 | /* Write out any symbols that we have not already written out. */ |
7686d77d AM |
4035 | bfd_hash_traverse (&info->hash->table, |
4036 | aout_link_write_other_symbol, | |
4037 | &aout_info); | |
e135f41b | 4038 | |
116c20d2 NC |
4039 | /* Now handle any relocs we were asked to create by the linker. |
4040 | These did not come from any input file. We must do these after | |
4041 | we have written out all the symbols, so that we know the symbol | |
4042 | indices to use. */ | |
4043 | if (have_link_order_relocs) | |
e135f41b | 4044 | { |
116c20d2 | 4045 | for (o = abfd->sections; o != NULL; o = o->next) |
e135f41b | 4046 | { |
8423293d | 4047 | for (p = o->map_head.link_order; |
116c20d2 NC |
4048 | p != NULL; |
4049 | p = p->next) | |
4050 | { | |
4051 | if (p->type == bfd_section_reloc_link_order | |
4052 | || p->type == bfd_symbol_reloc_link_order) | |
4053 | { | |
4054 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
4055 | goto error_return; | |
4056 | } | |
4057 | } | |
e135f41b NC |
4058 | } |
4059 | } | |
4060 | ||
c9594989 AM |
4061 | free (aout_info.contents); |
4062 | aout_info.contents = NULL; | |
4063 | free (aout_info.relocs); | |
4064 | aout_info.relocs = NULL; | |
4065 | free (aout_info.symbol_map); | |
4066 | aout_info.symbol_map = NULL; | |
4067 | free (aout_info.output_syms); | |
4068 | aout_info.output_syms = NULL; | |
116c20d2 NC |
4069 | if (includes_hash_initialized) |
4070 | { | |
4071 | bfd_hash_table_free (&aout_info.includes.root); | |
0a1b45a2 | 4072 | includes_hash_initialized = false; |
116c20d2 | 4073 | } |
e135f41b | 4074 | |
116c20d2 NC |
4075 | /* Finish up any dynamic linking we may be doing. */ |
4076 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
4077 | { | |
4078 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
4079 | goto error_return; | |
4080 | } | |
e135f41b | 4081 | |
116c20d2 NC |
4082 | /* Update the header information. */ |
4083 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
4084 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
4085 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
4086 | obj_textsec (abfd)->reloc_count = | |
4087 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
4088 | obj_datasec (abfd)->reloc_count = | |
4089 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
4090 | ||
4091 | /* Write out the string table, unless there are no symbols. */ | |
4092 | if (abfd->symcount > 0) | |
e135f41b | 4093 | { |
116c20d2 NC |
4094 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 |
4095 | || ! emit_stringtab (abfd, aout_info.strtab)) | |
4096 | goto error_return; | |
4097 | } | |
4098 | else if (obj_textsec (abfd)->reloc_count == 0 | |
4099 | && obj_datasec (abfd)->reloc_count == 0) | |
4100 | { | |
dda2980f AM |
4101 | /* The layout of a typical a.out file is header, text, data, |
4102 | relocs, symbols, string table. When there are no relocs, | |
4103 | symbols or string table, the last thing in the file is data | |
4104 | and a_data may be rounded up. However we may have a smaller | |
4105 | sized .data section and thus not written final padding. The | |
4106 | same thing can happen with text if there is no data. Write | |
4107 | final padding here to extend the file. */ | |
4108 | file_ptr pos = 0; | |
4109 | ||
4110 | if (exec_hdr (abfd)->a_data > obj_datasec (abfd)->size) | |
4111 | pos = obj_datasec (abfd)->filepos + exec_hdr (abfd)->a_data; | |
4112 | else if (obj_datasec (abfd)->size == 0 | |
4113 | && exec_hdr (abfd)->a_text > obj_textsec (abfd)->size) | |
4114 | pos = obj_textsec (abfd)->filepos + exec_hdr (abfd)->a_text; | |
4115 | if (pos != 0) | |
4116 | { | |
4117 | bfd_byte b = 0; | |
e135f41b | 4118 | |
dda2980f AM |
4119 | if (bfd_seek (abfd, pos - 1, SEEK_SET) != 0 |
4120 | || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1) | |
4121 | goto error_return; | |
4122 | } | |
e135f41b NC |
4123 | } |
4124 | ||
0a1b45a2 | 4125 | return true; |
e135f41b | 4126 | |
116c20d2 | 4127 | error_return: |
c9594989 AM |
4128 | free (aout_info.contents); |
4129 | free (aout_info.relocs); | |
4130 | free (aout_info.symbol_map); | |
4131 | free (aout_info.output_syms); | |
116c20d2 NC |
4132 | if (includes_hash_initialized) |
4133 | bfd_hash_table_free (&aout_info.includes.root); | |
0a1b45a2 | 4134 | return false; |
e135f41b NC |
4135 | } |
4136 | ||
116c20d2 NC |
4137 | /* Adjust and write out the symbols for an a.out file. Set the new |
4138 | symbol indices into a symbol_map. */ | |
4139 | ||
0a1b45a2 | 4140 | static bool |
57402f1e | 4141 | aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
e135f41b | 4142 | { |
e135f41b | 4143 | bfd *output_bfd; |
116c20d2 | 4144 | bfd_size_type sym_count; |
e135f41b | 4145 | char *strings; |
116c20d2 NC |
4146 | enum bfd_link_strip strip; |
4147 | enum bfd_link_discard discard; | |
4148 | struct external_nlist *outsym; | |
4149 | bfd_size_type strtab_index; | |
4150 | struct external_nlist *sym; | |
4151 | struct external_nlist *sym_end; | |
4152 | struct aout_link_hash_entry **sym_hash; | |
e135f41b | 4153 | int *symbol_map; |
0a1b45a2 AM |
4154 | bool pass; |
4155 | bool skip_next; | |
e135f41b | 4156 | |
57402f1e | 4157 | output_bfd = flaginfo->output_bfd; |
116c20d2 | 4158 | sym_count = obj_aout_external_sym_count (input_bfd); |
e135f41b | 4159 | strings = obj_aout_external_strings (input_bfd); |
57402f1e NC |
4160 | strip = flaginfo->info->strip; |
4161 | discard = flaginfo->info->discard; | |
4162 | outsym = flaginfo->output_syms; | |
e135f41b | 4163 | |
116c20d2 NC |
4164 | /* First write out a symbol for this object file, unless we are |
4165 | discarding such symbols. */ | |
4166 | if (strip != strip_all | |
4167 | && (strip != strip_some | |
765cf5f6 AM |
4168 | || bfd_hash_lookup (flaginfo->info->keep_hash, |
4169 | bfd_get_filename (input_bfd), | |
0a1b45a2 | 4170 | false, false) != NULL) |
116c20d2 NC |
4171 | && discard != discard_all) |
4172 | { | |
4173 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); | |
a975c88e SC |
4174 | H_PUT_8 (output_bfd, 0, outsym->e_ovly); |
4175 | H_PUT_16 (output_bfd, 0, outsym->e_desc); | |
57402f1e | 4176 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
0a1b45a2 | 4177 | bfd_get_filename (input_bfd), false); |
116c20d2 | 4178 | if (strtab_index == (bfd_size_type) -1) |
0a1b45a2 | 4179 | return false; |
116c20d2 NC |
4180 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4181 | PUT_WORD (output_bfd, | |
fd361982 | 4182 | (bfd_section_vma (obj_textsec (input_bfd)->output_section) |
116c20d2 NC |
4183 | + obj_textsec (input_bfd)->output_offset), |
4184 | outsym->e_value); | |
4185 | ++obj_aout_external_sym_count (output_bfd); | |
4186 | ++outsym; | |
4187 | } | |
4188 | ||
0a1b45a2 AM |
4189 | pass = false; |
4190 | skip_next = false; | |
116c20d2 NC |
4191 | sym = obj_aout_external_syms (input_bfd); |
4192 | sym_end = sym + sym_count; | |
4193 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4194 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4195 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); |
4196 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) | |
e135f41b | 4197 | { |
116c20d2 NC |
4198 | const char *name; |
4199 | int type; | |
4200 | struct aout_link_hash_entry *h; | |
0a1b45a2 | 4201 | bool skip; |
116c20d2 NC |
4202 | asection *symsec; |
4203 | bfd_vma val = 0; | |
0a1b45a2 | 4204 | bool copy; |
e135f41b | 4205 | |
116c20d2 | 4206 | /* We set *symbol_map to 0 above for all symbols. If it has |
07d6d2b8 AM |
4207 | already been set to -1 for this symbol, it means that we are |
4208 | discarding it because it appears in a duplicate header file. | |
4209 | See the N_BINCL code below. */ | |
116c20d2 | 4210 | if (*symbol_map == -1) |
e135f41b NC |
4211 | continue; |
4212 | ||
116c20d2 | 4213 | /* Initialize *symbol_map to -1, which means that the symbol was |
07d6d2b8 AM |
4214 | not copied into the output file. We will change it later if |
4215 | we do copy the symbol over. */ | |
116c20d2 | 4216 | *symbol_map = -1; |
e135f41b | 4217 | |
116c20d2 NC |
4218 | type = H_GET_8 (input_bfd, sym->e_type); |
4219 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
e135f41b | 4220 | |
116c20d2 | 4221 | h = NULL; |
e135f41b | 4222 | |
116c20d2 | 4223 | if (pass) |
e135f41b | 4224 | { |
116c20d2 NC |
4225 | /* Pass this symbol through. It is the target of an |
4226 | indirect or warning symbol. */ | |
4227 | val = GET_WORD (input_bfd, sym->e_value); | |
0a1b45a2 | 4228 | pass = false; |
116c20d2 NC |
4229 | } |
4230 | else if (skip_next) | |
4231 | { | |
4232 | /* Skip this symbol, which is the target of an indirect | |
4233 | symbol that we have changed to no longer be an indirect | |
4234 | symbol. */ | |
0a1b45a2 | 4235 | skip_next = false; |
116c20d2 NC |
4236 | continue; |
4237 | } | |
4238 | else | |
4239 | { | |
4240 | struct aout_link_hash_entry *hresolve; | |
e135f41b | 4241 | |
116c20d2 NC |
4242 | /* We have saved the hash table entry for this symbol, if |
4243 | there is one. Note that we could just look it up again | |
4244 | in the hash table, provided we first check that it is an | |
4245 | external symbol. */ | |
4246 | h = *sym_hash; | |
e135f41b | 4247 | |
116c20d2 | 4248 | /* Use the name from the hash table, in case the symbol was |
07d6d2b8 | 4249 | wrapped. */ |
116c20d2 NC |
4250 | if (h != NULL) |
4251 | name = h->root.root.string; | |
e135f41b | 4252 | |
116c20d2 NC |
4253 | /* If this is an indirect or warning symbol, then change |
4254 | hresolve to the base symbol. We also change *sym_hash so | |
4255 | that the relocation routines relocate against the real | |
4256 | symbol. */ | |
4257 | hresolve = h; | |
4258 | if (h != NULL | |
4259 | && (h->root.type == bfd_link_hash_indirect | |
4260 | || h->root.type == bfd_link_hash_warning)) | |
4261 | { | |
4262 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; | |
4263 | while (hresolve->root.type == bfd_link_hash_indirect | |
4264 | || hresolve->root.type == bfd_link_hash_warning) | |
4265 | hresolve = ((struct aout_link_hash_entry *) | |
4266 | hresolve->root.u.i.link); | |
4267 | *sym_hash = hresolve; | |
4268 | } | |
e135f41b | 4269 | |
116c20d2 NC |
4270 | /* If the symbol has already been written out, skip it. */ |
4271 | if (h != NULL | |
4272 | && h->root.type != bfd_link_hash_warning | |
4273 | && h->written) | |
4274 | { | |
4275 | if ((type & N_TYPE) == N_INDR | |
4276 | || type == N_WARNING) | |
0a1b45a2 | 4277 | skip_next = true; |
116c20d2 NC |
4278 | *symbol_map = h->indx; |
4279 | continue; | |
4280 | } | |
e135f41b | 4281 | |
116c20d2 | 4282 | /* See if we are stripping this symbol. */ |
0a1b45a2 | 4283 | skip = false; |
116c20d2 NC |
4284 | switch (strip) |
4285 | { | |
4286 | case strip_none: | |
4287 | break; | |
4288 | case strip_debugger: | |
a975c88e | 4289 | if (is_stab (type, name)) |
0a1b45a2 | 4290 | skip = true; |
116c20d2 NC |
4291 | break; |
4292 | case strip_some: | |
0a1b45a2 AM |
4293 | if (bfd_hash_lookup (flaginfo->info->keep_hash, name, |
4294 | false, false) == NULL) | |
4295 | skip = true; | |
116c20d2 NC |
4296 | break; |
4297 | case strip_all: | |
0a1b45a2 | 4298 | skip = true; |
116c20d2 | 4299 | break; |
e135f41b | 4300 | } |
116c20d2 | 4301 | if (skip) |
e135f41b | 4302 | { |
116c20d2 | 4303 | if (h != NULL) |
0a1b45a2 | 4304 | h->written = true; |
116c20d2 NC |
4305 | continue; |
4306 | } | |
e135f41b | 4307 | |
116c20d2 | 4308 | /* Get the value of the symbol. */ |
a975c88e SC |
4309 | if (is_stab (type, name)) |
4310 | { | |
4311 | switch (type) | |
4312 | { | |
4313 | default: | |
4314 | symsec = bfd_abs_section_ptr; | |
4315 | break; | |
4316 | case N_SO: | |
4317 | case N_SOL: | |
4318 | case N_FUN: | |
4319 | case N_ENTRY: | |
4320 | case N_SLINE: | |
4321 | case N_FN: | |
4322 | symsec = obj_textsec (input_bfd); | |
4323 | break; | |
4324 | case N_STSYM: | |
4325 | case N_DSLINE: | |
4326 | symsec = obj_datasec (input_bfd); | |
4327 | break; | |
4328 | case N_LCSYM: | |
4329 | case N_BSLINE: | |
4330 | symsec = obj_bsssec (input_bfd); | |
4331 | break; | |
4332 | } | |
4333 | val = GET_WORD (input_bfd, sym->e_value); | |
4334 | } | |
4335 | else if ((type & N_TYPE) == N_TEXT | |
116c20d2 NC |
4336 | || type == N_WEAKT) |
4337 | symsec = obj_textsec (input_bfd); | |
4338 | else if ((type & N_TYPE) == N_DATA | |
4339 | || type == N_WEAKD) | |
4340 | symsec = obj_datasec (input_bfd); | |
4341 | else if ((type & N_TYPE) == N_BSS | |
4342 | || type == N_WEAKB) | |
4343 | symsec = obj_bsssec (input_bfd); | |
4344 | else if ((type & N_TYPE) == N_ABS | |
4345 | || type == N_WEAKA) | |
4346 | symsec = bfd_abs_section_ptr; | |
4347 | else if (((type & N_TYPE) == N_INDR | |
4348 | && (hresolve == NULL | |
4349 | || (hresolve->root.type != bfd_link_hash_defined | |
4350 | && hresolve->root.type != bfd_link_hash_defweak | |
4351 | && hresolve->root.type != bfd_link_hash_common))) | |
4352 | || type == N_WARNING) | |
4353 | { | |
4354 | /* Pass the next symbol through unchanged. The | |
4355 | condition above for indirect symbols is so that if | |
4356 | the indirect symbol was defined, we output it with | |
4357 | the correct definition so the debugger will | |
4358 | understand it. */ | |
0a1b45a2 | 4359 | pass = true; |
116c20d2 NC |
4360 | val = GET_WORD (input_bfd, sym->e_value); |
4361 | symsec = NULL; | |
4362 | } | |
116c20d2 NC |
4363 | else |
4364 | { | |
4365 | /* If we get here with an indirect symbol, it means that | |
4366 | we are outputting it with a real definition. In such | |
4367 | a case we do not want to output the next symbol, | |
4368 | which is the target of the indirection. */ | |
4369 | if ((type & N_TYPE) == N_INDR) | |
0a1b45a2 | 4370 | skip_next = true; |
e135f41b | 4371 | |
116c20d2 | 4372 | symsec = NULL; |
e135f41b | 4373 | |
116c20d2 NC |
4374 | /* We need to get the value from the hash table. We use |
4375 | hresolve so that if we have defined an indirect | |
4376 | symbol we output the final definition. */ | |
4377 | if (h == NULL) | |
4378 | { | |
4379 | switch (type & N_TYPE) | |
4380 | { | |
4381 | case N_SETT: | |
4382 | symsec = obj_textsec (input_bfd); | |
4383 | break; | |
4384 | case N_SETD: | |
4385 | symsec = obj_datasec (input_bfd); | |
4386 | break; | |
4387 | case N_SETB: | |
4388 | symsec = obj_bsssec (input_bfd); | |
4389 | break; | |
4390 | case N_SETA: | |
4391 | symsec = bfd_abs_section_ptr; | |
4392 | break; | |
4393 | default: | |
4394 | val = 0; | |
4395 | break; | |
4396 | } | |
4397 | } | |
4398 | else if (hresolve->root.type == bfd_link_hash_defined | |
4399 | || hresolve->root.type == bfd_link_hash_defweak) | |
4400 | { | |
4401 | asection *input_section; | |
4402 | asection *output_section; | |
e135f41b | 4403 | |
116c20d2 NC |
4404 | /* This case usually means a common symbol which was |
4405 | turned into a defined symbol. */ | |
4406 | input_section = hresolve->root.u.def.section; | |
4407 | output_section = input_section->output_section; | |
4408 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
4409 | || output_section->owner == output_bfd); | |
4410 | val = (hresolve->root.u.def.value | |
fd361982 | 4411 | + bfd_section_vma (output_section) |
116c20d2 | 4412 | + input_section->output_offset); |
e135f41b | 4413 | |
116c20d2 NC |
4414 | /* Get the correct type based on the section. If |
4415 | this is a constructed set, force it to be | |
4416 | globally visible. */ | |
4417 | if (type == N_SETT | |
4418 | || type == N_SETD | |
4419 | || type == N_SETB | |
4420 | || type == N_SETA) | |
4421 | type |= N_EXT; | |
e135f41b | 4422 | |
116c20d2 | 4423 | type &=~ N_TYPE; |
e135f41b | 4424 | |
116c20d2 NC |
4425 | if (output_section == obj_textsec (output_bfd)) |
4426 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4427 | ? N_TEXT | |
4428 | : N_WEAKT); | |
4429 | else if (output_section == obj_datasec (output_bfd)) | |
4430 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4431 | ? N_DATA | |
4432 | : N_WEAKD); | |
4433 | else if (output_section == obj_bsssec (output_bfd)) | |
4434 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4435 | ? N_BSS | |
4436 | : N_WEAKB); | |
4437 | else | |
4438 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4439 | ? N_ABS | |
4440 | : N_WEAKA); | |
e135f41b | 4441 | } |
116c20d2 NC |
4442 | else if (hresolve->root.type == bfd_link_hash_common) |
4443 | val = hresolve->root.u.c.size; | |
4444 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
e135f41b | 4445 | { |
116c20d2 NC |
4446 | val = 0; |
4447 | type = N_WEAKU; | |
e135f41b | 4448 | } |
116c20d2 NC |
4449 | else |
4450 | val = 0; | |
e135f41b | 4451 | } |
116c20d2 NC |
4452 | if (symsec != NULL) |
4453 | val = (symsec->output_section->vma | |
4454 | + symsec->output_offset | |
4455 | + (GET_WORD (input_bfd, sym->e_value) | |
4456 | - symsec->vma)); | |
e135f41b | 4457 | |
116c20d2 NC |
4458 | /* If this is a global symbol set the written flag, and if |
4459 | it is a local symbol see if we should discard it. */ | |
4460 | if (h != NULL) | |
e135f41b | 4461 | { |
0a1b45a2 | 4462 | h->written = true; |
116c20d2 | 4463 | h->indx = obj_aout_external_sym_count (output_bfd); |
e135f41b | 4464 | } |
116c20d2 NC |
4465 | else if ((type & N_TYPE) != N_SETT |
4466 | && (type & N_TYPE) != N_SETD | |
4467 | && (type & N_TYPE) != N_SETB | |
4468 | && (type & N_TYPE) != N_SETA) | |
e135f41b | 4469 | { |
116c20d2 NC |
4470 | switch (discard) |
4471 | { | |
4472 | case discard_none: | |
4473 | case discard_sec_merge: | |
4474 | break; | |
4475 | case discard_l: | |
a975c88e | 4476 | if (!is_stab (type, name) |
116c20d2 | 4477 | && bfd_is_local_label_name (input_bfd, name)) |
0a1b45a2 | 4478 | skip = true; |
116c20d2 NC |
4479 | break; |
4480 | case discard_all: | |
0a1b45a2 | 4481 | skip = true; |
116c20d2 NC |
4482 | break; |
4483 | } | |
4484 | if (skip) | |
4485 | { | |
0a1b45a2 | 4486 | pass = false; |
116c20d2 NC |
4487 | continue; |
4488 | } | |
e135f41b NC |
4489 | } |
4490 | ||
116c20d2 NC |
4491 | /* An N_BINCL symbol indicates the start of the stabs |
4492 | entries for a header file. We need to scan ahead to the | |
4493 | next N_EINCL symbol, ignoring nesting, adding up all the | |
4494 | characters in the symbol names, not including the file | |
4495 | numbers in types (the first number after an open | |
4496 | parenthesis). */ | |
4497 | if (type == N_BINCL) | |
e135f41b | 4498 | { |
116c20d2 NC |
4499 | struct external_nlist *incl_sym; |
4500 | int nest; | |
4501 | struct aout_link_includes_entry *incl_entry; | |
4502 | struct aout_link_includes_totals *t; | |
e135f41b | 4503 | |
116c20d2 NC |
4504 | val = 0; |
4505 | nest = 0; | |
4506 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
4507 | { | |
4508 | int incl_type; | |
e135f41b | 4509 | |
116c20d2 NC |
4510 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
4511 | if (incl_type == N_EINCL) | |
4512 | { | |
4513 | if (nest == 0) | |
4514 | break; | |
4515 | --nest; | |
4516 | } | |
4517 | else if (incl_type == N_BINCL) | |
4518 | ++nest; | |
4519 | else if (nest == 0) | |
4520 | { | |
4521 | const char *s; | |
e135f41b | 4522 | |
116c20d2 NC |
4523 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); |
4524 | for (; *s != '\0'; s++) | |
4525 | { | |
4526 | val += *s; | |
4527 | if (*s == '(') | |
4528 | { | |
4529 | /* Skip the file number. */ | |
4530 | ++s; | |
4531 | while (ISDIGIT (*s)) | |
4532 | ++s; | |
4533 | --s; | |
4534 | } | |
4535 | } | |
4536 | } | |
4537 | } | |
e135f41b | 4538 | |
116c20d2 | 4539 | /* If we have already included a header file with the |
07d6d2b8 AM |
4540 | same value, then replace this one with an N_EXCL |
4541 | symbol. */ | |
57402f1e NC |
4542 | copy = ! flaginfo->info->keep_memory; |
4543 | incl_entry = aout_link_includes_lookup (&flaginfo->includes, | |
0a1b45a2 | 4544 | name, true, copy); |
116c20d2 | 4545 | if (incl_entry == NULL) |
0a1b45a2 | 4546 | return false; |
116c20d2 NC |
4547 | for (t = incl_entry->totals; t != NULL; t = t->next) |
4548 | if (t->total == val) | |
4549 | break; | |
4550 | if (t == NULL) | |
4551 | { | |
4552 | /* This is the first time we have seen this header | |
07d6d2b8 | 4553 | file with this set of stabs strings. */ |
57402f1e | 4554 | t = bfd_hash_allocate (&flaginfo->includes.root, |
116c20d2 NC |
4555 | sizeof *t); |
4556 | if (t == NULL) | |
0a1b45a2 | 4557 | return false; |
116c20d2 NC |
4558 | t->total = val; |
4559 | t->next = incl_entry->totals; | |
4560 | incl_entry->totals = t; | |
4561 | } | |
4562 | else | |
4563 | { | |
4564 | int *incl_map; | |
e135f41b | 4565 | |
116c20d2 | 4566 | /* This is a duplicate header file. We must change |
07d6d2b8 AM |
4567 | it to be an N_EXCL entry, and mark all the |
4568 | included symbols to prevent outputting them. */ | |
116c20d2 | 4569 | type = N_EXCL; |
e135f41b | 4570 | |
116c20d2 NC |
4571 | nest = 0; |
4572 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
4573 | incl_sym < sym_end; | |
4574 | incl_sym++, incl_map++) | |
4575 | { | |
4576 | int incl_type; | |
e135f41b | 4577 | |
116c20d2 NC |
4578 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
4579 | if (incl_type == N_EINCL) | |
4580 | { | |
4581 | if (nest == 0) | |
4582 | { | |
4583 | *incl_map = -1; | |
4584 | break; | |
4585 | } | |
4586 | --nest; | |
4587 | } | |
4588 | else if (incl_type == N_BINCL) | |
4589 | ++nest; | |
4590 | else if (nest == 0) | |
4591 | *incl_map = -1; | |
4592 | } | |
4593 | } | |
4594 | } | |
e135f41b | 4595 | } |
e135f41b | 4596 | |
116c20d2 NC |
4597 | /* Copy this symbol into the list of symbols we are going to |
4598 | write out. */ | |
4599 | H_PUT_8 (output_bfd, type, outsym->e_type); | |
a975c88e SC |
4600 | H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_ovly), outsym->e_ovly); |
4601 | H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc); | |
0a1b45a2 | 4602 | copy = false; |
57402f1e | 4603 | if (! flaginfo->info->keep_memory) |
e135f41b | 4604 | { |
116c20d2 NC |
4605 | /* name points into a string table which we are going to |
4606 | free. If there is a hash table entry, use that string. | |
4607 | Otherwise, copy name into memory. */ | |
4608 | if (h != NULL) | |
4609 | name = h->root.root.string; | |
4610 | else | |
0a1b45a2 | 4611 | copy = true; |
e135f41b | 4612 | } |
57402f1e | 4613 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
4614 | name, copy); |
4615 | if (strtab_index == (bfd_size_type) -1) | |
0a1b45a2 | 4616 | return false; |
116c20d2 NC |
4617 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4618 | PUT_WORD (output_bfd, val, outsym->e_value); | |
4619 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
4620 | ++obj_aout_external_sym_count (output_bfd); | |
4621 | ++outsym; | |
e135f41b NC |
4622 | } |
4623 | ||
116c20d2 | 4624 | /* Write out the output symbols we have just constructed. */ |
57402f1e | 4625 | if (outsym > flaginfo->output_syms) |
e135f41b NC |
4626 | { |
4627 | bfd_size_type size; | |
e135f41b | 4628 | |
57402f1e | 4629 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0) |
0a1b45a2 | 4630 | return false; |
57402f1e | 4631 | size = outsym - flaginfo->output_syms; |
116c20d2 | 4632 | size *= EXTERNAL_NLIST_SIZE; |
57402f1e | 4633 | if (bfd_bwrite ((void *) flaginfo->output_syms, size, output_bfd) != size) |
0a1b45a2 | 4634 | return false; |
57402f1e | 4635 | flaginfo->symoff += size; |
e135f41b NC |
4636 | } |
4637 | ||
0a1b45a2 | 4638 | return true; |
e135f41b | 4639 | } |
116c20d2 NC |
4640 | |
4641 | /* Write out a symbol that was not associated with an a.out input | |
4642 | object. */ | |
e135f41b | 4643 | |
edeb6e24 AM |
4644 | static bfd_vma |
4645 | bfd_getp32 (const void *p) | |
e135f41b | 4646 | { |
edeb6e24 AM |
4647 | const bfd_byte *addr = p; |
4648 | unsigned long v; | |
116c20d2 | 4649 | |
edeb6e24 AM |
4650 | v = (unsigned long) addr[1] << 24; |
4651 | v |= (unsigned long) addr[0] << 16; | |
4652 | v |= (unsigned long) addr[3] << 8; | |
4653 | v |= (unsigned long) addr[2]; | |
4654 | return v; | |
e135f41b NC |
4655 | } |
4656 | ||
4657 | #define COERCE32(x) (((bfd_signed_vma) (x) ^ 0x80000000) - 0x80000000) | |
4658 | ||
edeb6e24 AM |
4659 | static bfd_signed_vma |
4660 | bfd_getp_signed_32 (const void *p) | |
e135f41b | 4661 | { |
edeb6e24 AM |
4662 | const bfd_byte *addr = p; |
4663 | unsigned long v; | |
116c20d2 | 4664 | |
edeb6e24 AM |
4665 | v = (unsigned long) addr[1] << 24; |
4666 | v |= (unsigned long) addr[0] << 16; | |
4667 | v |= (unsigned long) addr[3] << 8; | |
4668 | v |= (unsigned long) addr[2]; | |
4669 | return COERCE32 (v); | |
e135f41b NC |
4670 | } |
4671 | ||
edeb6e24 AM |
4672 | static void |
4673 | bfd_putp32 (bfd_vma data, void *p) | |
e135f41b | 4674 | { |
edeb6e24 | 4675 | bfd_byte *addr = p; |
116c20d2 | 4676 | |
edeb6e24 AM |
4677 | addr[0] = (data >> 16) & 0xff; |
4678 | addr[1] = (data >> 24) & 0xff; | |
4679 | addr[2] = (data >> 0) & 0xff; | |
4680 | addr[3] = (data >> 8) & 0xff; | |
e135f41b | 4681 | } |
116c20d2 NC |
4682 | |
4683 | const bfd_target MY (vec) = | |
4684 | { | |
4685 | TARGETNAME, /* Name. */ | |
4686 | bfd_target_aout_flavour, | |
4687 | BFD_ENDIAN_LITTLE, /* Target byte order (little). */ | |
4688 | BFD_ENDIAN_LITTLE, /* Target headers byte order (little). */ | |
4689 | (HAS_RELOC | EXEC_P | /* Object flags. */ | |
4690 | HAS_LINENO | HAS_DEBUG | | |
4691 | HAS_SYMS | HAS_LOCALS | WP_TEXT), | |
4692 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA), | |
4693 | MY_symbol_leading_char, | |
4694 | AR_PAD_CHAR, /* AR_pad_char. */ | |
4695 | 15, /* AR_max_namelen. */ | |
0aabe54e | 4696 | 0, /* match priority. */ |
d1bcae83 | 4697 | TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */ |
116c20d2 NC |
4698 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
4699 | bfd_getp32, bfd_getp_signed_32, bfd_putp32, | |
4700 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */ | |
4701 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
4702 | bfd_getp32, bfd_getp_signed_32, bfd_putp32, | |
4703 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Headers. */ | |
d00dd7dc AM |
4704 | { /* bfd_check_format. */ |
4705 | _bfd_dummy_target, | |
4706 | MY_object_p, | |
4707 | bfd_generic_archive_p, | |
4708 | MY_core_file_p | |
4709 | }, | |
4710 | { /* bfd_set_format. */ | |
4711 | _bfd_bool_bfd_false_error, | |
4712 | MY_mkobject, | |
4713 | _bfd_generic_mkarchive, | |
4714 | _bfd_bool_bfd_false_error | |
4715 | }, | |
4716 | { /* bfd_write_contents. */ | |
4717 | _bfd_bool_bfd_false_error, | |
4718 | MY_write_object_contents, | |
4719 | _bfd_write_archive_contents, | |
4720 | _bfd_bool_bfd_false_error | |
4721 | }, | |
4722 | ||
4723 | BFD_JUMP_TABLE_GENERIC (MY), | |
4724 | BFD_JUMP_TABLE_COPY (MY), | |
4725 | BFD_JUMP_TABLE_CORE (MY), | |
4726 | BFD_JUMP_TABLE_ARCHIVE (MY), | |
4727 | BFD_JUMP_TABLE_SYMBOLS (MY), | |
4728 | BFD_JUMP_TABLE_RELOCS (MY), | |
4729 | BFD_JUMP_TABLE_WRITE (MY), | |
4730 | BFD_JUMP_TABLE_LINK (MY), | |
4731 | BFD_JUMP_TABLE_DYNAMIC (MY), | |
116c20d2 NC |
4732 | |
4733 | /* Alternative_target. */ | |
4734 | NULL, | |
4735 | ||
4736 | (void *) MY_backend_data | |
4737 | }; |