Commit | Line | Data |
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e135f41b | 1 | /* BFD back-end for PDP-11 a.out binaries. |
b3adc24a | 2 | Copyright (C) 2001-2020 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) | |
116c20d2 | 148 | static bfd_boolean 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 */ | |
278 | static bfd_boolean separate_i_d = FALSE; | |
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 */ |
b34976b6 AM |
283 | HOWTO( 0, 0, 1, 16, FALSE, 0, complain_overflow_signed,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE), |
284 | HOWTO( 1, 0, 1, 16, TRUE, 0, complain_overflow_signed,0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE), | |
66e3eb08 | 285 | HOWTO( 2, 0, 2, 32, FALSE, 0, complain_overflow_signed,0,"32", TRUE, 0x0000ffff,0x0000ffff, FALSE), |
e135f41b NC |
286 | }; |
287 | ||
288 | #define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0])) | |
289 | ||
116c20d2 | 290 | |
13e570f8 | 291 | static bfd_boolean aout_link_check_archive_element (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, bfd_boolean *); |
07d6d2b8 AM |
292 | static bfd_boolean aout_link_add_object_symbols (bfd *, struct bfd_link_info *); |
293 | static bfd_boolean aout_link_add_symbols (bfd *, struct bfd_link_info *); | |
294 | static bfd_boolean aout_link_write_symbols (struct aout_final_link_info *, bfd *); | |
116c20d2 NC |
295 | |
296 | ||
e135f41b | 297 | reloc_howto_type * |
116c20d2 NC |
298 | NAME (aout, reloc_type_lookup) (bfd * abfd ATTRIBUTE_UNUSED, |
299 | bfd_reloc_code_real_type code) | |
e135f41b NC |
300 | { |
301 | switch (code) | |
302 | { | |
303 | case BFD_RELOC_16: | |
304 | return &howto_table_pdp11[0]; | |
305 | case BFD_RELOC_16_PCREL: | |
306 | return &howto_table_pdp11[1]; | |
66e3eb08 SC |
307 | case BFD_RELOC_32: |
308 | return &howto_table_pdp11[2]; | |
e135f41b | 309 | default: |
116c20d2 | 310 | return NULL; |
e135f41b NC |
311 | } |
312 | } | |
313 | ||
157090f7 AM |
314 | reloc_howto_type * |
315 | NAME (aout, reloc_name_lookup) (bfd *abfd ATTRIBUTE_UNUSED, | |
316 | const char *r_name) | |
317 | { | |
318 | unsigned int i; | |
319 | ||
320 | for (i = 0; | |
321 | i < sizeof (howto_table_pdp11) / sizeof (howto_table_pdp11[0]); | |
322 | i++) | |
323 | if (howto_table_pdp11[i].name != NULL | |
324 | && strcasecmp (howto_table_pdp11[i].name, r_name) == 0) | |
325 | return &howto_table_pdp11[i]; | |
326 | ||
327 | return NULL; | |
328 | } | |
329 | ||
a975c88e SC |
330 | /* Disambiguate conflicts between normal symbol types and .stab symbol types |
331 | (undefined externals N_UNDF+N_EXT vs. global variables N_GYSM and external | |
332 | bss symbols N_BSS+N_EXT vs. function names N_FUN) with a hack to look for | |
333 | the ':' in the global variable or function name string. */ | |
334 | ||
335 | static int | |
336 | is_stab (int type, const char *name) | |
337 | { | |
338 | if (type == N_GSYM || type == N_FUN) | |
f0aa3025 AM |
339 | return strchr (name, ':') != NULL; |
340 | return type > N_FUN; | |
a975c88e SC |
341 | } |
342 | ||
e135f41b | 343 | static int |
116c20d2 | 344 | pdp11_aout_write_headers (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
345 | { |
346 | struct external_exec exec_bytes; | |
e135f41b NC |
347 | |
348 | if (adata(abfd).magic == undecided_magic) | |
3a8c4a5b | 349 | NAME (aout, adjust_sizes_and_vmas) (abfd); |
e135f41b NC |
350 | |
351 | execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; | |
352 | execp->a_entry = bfd_get_start_address (abfd); | |
353 | ||
116c20d2 NC |
354 | if (obj_textsec (abfd)->reloc_count > 0 |
355 | || obj_datasec (abfd)->reloc_count > 0) | |
e135f41b NC |
356 | { |
357 | execp->a_trsize = execp->a_text; | |
358 | execp->a_drsize = execp->a_data; | |
359 | } | |
360 | else | |
361 | { | |
362 | execp->a_trsize = 0; | |
363 | execp->a_drsize = 0; | |
364 | } | |
365 | ||
116c20d2 | 366 | NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); |
e135f41b NC |
367 | |
368 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) | |
b34976b6 | 369 | return FALSE; |
e135f41b | 370 | |
116c20d2 | 371 | if (bfd_bwrite ((void *) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, abfd) |
e135f41b | 372 | != EXEC_BYTES_SIZE) |
b34976b6 | 373 | return FALSE; |
e135f41b | 374 | |
116c20d2 NC |
375 | /* Now write out reloc info, followed by syms and strings. */ |
376 | if (bfd_get_outsymbols (abfd) != NULL | |
e135f41b NC |
377 | && bfd_get_symcount (abfd) != 0) |
378 | { | |
bbb1afc8 | 379 | if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (execp)), SEEK_SET) != 0) |
b34976b6 | 380 | return FALSE; |
e135f41b | 381 | |
116c20d2 | 382 | if (! NAME (aout, write_syms) (abfd)) |
b34976b6 | 383 | return FALSE; |
e135f41b NC |
384 | } |
385 | ||
116c20d2 NC |
386 | if (obj_textsec (abfd)->reloc_count > 0 |
387 | || obj_datasec (abfd)->reloc_count > 0) | |
e135f41b | 388 | { |
bbb1afc8 | 389 | if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (execp)), SEEK_SET) != 0 |
116c20d2 | 390 | || !NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd)) |
bbb1afc8 | 391 | || bfd_seek (abfd, (file_ptr) (N_DRELOFF (execp)), SEEK_SET) != 0 |
68ffbac6 | 392 | || !NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) |
b34976b6 | 393 | return FALSE; |
e135f41b NC |
394 | } |
395 | ||
b34976b6 | 396 | return TRUE; |
dc810e39 | 397 | } |
e135f41b NC |
398 | |
399 | /* Write an object file. | |
400 | Section contents have already been written. We write the | |
401 | file header, symbols, and relocation. */ | |
402 | ||
b34976b6 | 403 | static bfd_boolean |
116c20d2 | 404 | MY(write_object_contents) (bfd *abfd) |
e135f41b NC |
405 | { |
406 | struct internal_exec *execp = exec_hdr (abfd); | |
407 | ||
408 | /* We must make certain that the magic number has been set. This | |
409 | will normally have been done by set_section_contents, but only if | |
410 | there actually are some section contents. */ | |
411 | if (! abfd->output_has_begun) | |
3a8c4a5b | 412 | NAME (aout, adjust_sizes_and_vmas) (abfd); |
e135f41b NC |
413 | |
414 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
415 | ||
116c20d2 | 416 | return WRITE_HEADERS (abfd, execp); |
e135f41b NC |
417 | } |
418 | ||
116c20d2 NC |
419 | /* Swap the information in an executable header @var{raw_bytes} taken |
420 | from a raw byte stream memory image into the internal exec header | |
421 | structure "execp". */ | |
e135f41b NC |
422 | |
423 | #ifndef NAME_swap_exec_header_in | |
424 | void | |
116c20d2 NC |
425 | NAME (aout, swap_exec_header_in) (bfd *abfd, |
426 | struct external_exec *bytes, | |
427 | struct internal_exec *execp) | |
e135f41b | 428 | { |
e135f41b NC |
429 | /* The internal_exec structure has some fields that are unused in this |
430 | configuration (IE for i960), so ensure that all such uninitialized | |
431 | fields are zero'd out. There are places where two of these structs | |
116c20d2 NC |
432 | are memcmp'd, and thus the contents do matter. */ |
433 | memset ((void *) execp, 0, sizeof (struct internal_exec)); | |
e135f41b NC |
434 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
435 | execp->a_info = GET_MAGIC (abfd, bytes->e_info); | |
436 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
437 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
438 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
439 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
440 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
441 | ||
442 | if (GET_WORD (abfd, bytes->e_flag) & A_FLAG_RELOC_STRIPPED) | |
443 | { | |
444 | execp->a_trsize = 0; | |
445 | execp->a_drsize = 0; | |
446 | } | |
447 | else | |
448 | { | |
449 | execp->a_trsize = execp->a_text; | |
450 | execp->a_drsize = execp->a_data; | |
451 | } | |
452 | } | |
116c20d2 | 453 | #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in) |
e135f41b NC |
454 | #endif |
455 | ||
116c20d2 NC |
456 | /* Swap the information in an internal exec header structure |
457 | "execp" into the buffer "bytes" ready for writing to disk. */ | |
e135f41b | 458 | void |
116c20d2 NC |
459 | NAME (aout, swap_exec_header_out) (bfd *abfd, |
460 | struct internal_exec *execp, | |
461 | struct external_exec *bytes) | |
e135f41b | 462 | { |
116c20d2 | 463 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ |
e135f41b NC |
464 | PUT_MAGIC (abfd, execp->a_info, bytes->e_info); |
465 | PUT_WORD (abfd, execp->a_text, bytes->e_text); | |
466 | PUT_WORD (abfd, execp->a_data, bytes->e_data); | |
467 | PUT_WORD (abfd, execp->a_bss, bytes->e_bss); | |
468 | PUT_WORD (abfd, execp->a_syms, bytes->e_syms); | |
469 | PUT_WORD (abfd, execp->a_entry, bytes->e_entry); | |
470 | PUT_WORD (abfd, 0, bytes->e_unused); | |
471 | ||
116c20d2 NC |
472 | if ((execp->a_trsize == 0 || execp->a_text == 0) |
473 | && (execp->a_drsize == 0 || execp->a_data == 0)) | |
474 | PUT_WORD (abfd, A_FLAG_RELOC_STRIPPED, bytes->e_flag); | |
475 | else if (execp->a_trsize == execp->a_text | |
476 | && execp->a_drsize == execp->a_data) | |
477 | PUT_WORD (abfd, 0, bytes->e_flag); | |
e135f41b NC |
478 | else |
479 | { | |
116c20d2 | 480 | /* TODO: print a proper warning message. */ |
e135f41b NC |
481 | fprintf (stderr, "BFD:%s:%d: internal error\n", __FILE__, __LINE__); |
482 | PUT_WORD (abfd, 0, bytes->e_flag); | |
483 | } | |
484 | } | |
485 | ||
486 | /* Make all the section for an a.out file. */ | |
487 | ||
b34976b6 | 488 | bfd_boolean |
116c20d2 | 489 | NAME (aout, make_sections) (bfd *abfd) |
e135f41b | 490 | { |
116c20d2 | 491 | if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL) |
b34976b6 | 492 | return FALSE; |
116c20d2 | 493 | if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL) |
b34976b6 | 494 | return FALSE; |
116c20d2 | 495 | if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL) |
b34976b6 AM |
496 | return FALSE; |
497 | return TRUE; | |
e135f41b NC |
498 | } |
499 | ||
116c20d2 NC |
500 | /* Some a.out variant thinks that the file open in ABFD |
501 | checking is an a.out file. Do some more checking, and set up | |
502 | for access if it really is. Call back to the calling | |
503 | environment's "finish up" function just before returning, to | |
504 | handle any last-minute setup. */ | |
e135f41b | 505 | |
cb001c0d | 506 | bfd_cleanup |
116c20d2 NC |
507 | NAME (aout, some_aout_object_p) (bfd *abfd, |
508 | struct internal_exec *execp, | |
cb001c0d | 509 | bfd_cleanup (*callback_to_real_object_p) (bfd *)) |
e135f41b NC |
510 | { |
511 | struct aout_data_struct *rawptr, *oldrawptr; | |
cb001c0d | 512 | bfd_cleanup cleanup; |
986f0783 | 513 | size_t amt = sizeof (struct aout_data_struct); |
e135f41b | 514 | |
116c20d2 | 515 | rawptr = bfd_zalloc (abfd, amt); |
e135f41b NC |
516 | if (rawptr == NULL) |
517 | return 0; | |
518 | ||
519 | oldrawptr = abfd->tdata.aout_data; | |
520 | abfd->tdata.aout_data = rawptr; | |
521 | ||
dc12032b | 522 | /* Copy the contents of the old tdata struct. */ |
e135f41b NC |
523 | if (oldrawptr != NULL) |
524 | *abfd->tdata.aout_data = *oldrawptr; | |
525 | ||
526 | abfd->tdata.aout_data->a.hdr = &rawptr->e; | |
116c20d2 | 527 | *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct. */ |
e135f41b NC |
528 | execp = abfd->tdata.aout_data->a.hdr; |
529 | ||
116c20d2 | 530 | /* Set the file flags. */ |
e135f41b NC |
531 | abfd->flags = BFD_NO_FLAGS; |
532 | if (execp->a_drsize || execp->a_trsize) | |
533 | abfd->flags |= HAS_RELOC; | |
116c20d2 | 534 | /* Setting of EXEC_P has been deferred to the bottom of this function. */ |
e135f41b NC |
535 | if (execp->a_syms) |
536 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
bbb1afc8 | 537 | if (N_DYNAMIC (execp)) |
e135f41b NC |
538 | abfd->flags |= DYNAMIC; |
539 | ||
bbb1afc8 | 540 | if (N_MAGIC (execp) == ZMAGIC) |
e135f41b NC |
541 | { |
542 | abfd->flags |= D_PAGED | WP_TEXT; | |
543 | adata (abfd).magic = z_magic; | |
544 | } | |
bbb1afc8 | 545 | else if (N_MAGIC (execp) == NMAGIC) |
e135f41b NC |
546 | { |
547 | abfd->flags |= WP_TEXT; | |
548 | adata (abfd).magic = n_magic; | |
549 | } | |
bbb1afc8 | 550 | else if (N_MAGIC (execp) == OMAGIC) |
e135f41b | 551 | adata (abfd).magic = o_magic; |
fa1477dc SC |
552 | else if (N_MAGIC (execp) == IMAGIC) |
553 | adata (abfd).magic = i_magic; | |
e135f41b NC |
554 | else |
555 | { | |
556 | /* Should have been checked with N_BADMAG before this routine | |
557 | was called. */ | |
558 | abort (); | |
559 | } | |
560 | ||
ed48ec2e | 561 | abfd->start_address = execp->a_entry; |
e135f41b | 562 | |
116c20d2 | 563 | obj_aout_symbols (abfd) = NULL; |
ed48ec2e | 564 | abfd->symcount = execp->a_syms / sizeof (struct external_nlist); |
e135f41b NC |
565 | |
566 | /* The default relocation entry size is that of traditional V7 Unix. */ | |
567 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
568 | ||
116c20d2 | 569 | /* The default symbol entry size is that of traditional Unix. */ |
e135f41b NC |
570 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; |
571 | ||
572 | #ifdef USE_MMAP | |
573 | bfd_init_window (&obj_aout_sym_window (abfd)); | |
574 | bfd_init_window (&obj_aout_string_window (abfd)); | |
575 | #endif | |
116c20d2 | 576 | |
e135f41b NC |
577 | obj_aout_external_syms (abfd) = NULL; |
578 | obj_aout_external_strings (abfd) = NULL; | |
579 | obj_aout_sym_hashes (abfd) = NULL; | |
580 | ||
116c20d2 | 581 | if (! NAME (aout, make_sections) (abfd)) |
e135f41b NC |
582 | return NULL; |
583 | ||
eea6121a AM |
584 | obj_datasec (abfd)->size = execp->a_data; |
585 | obj_bsssec (abfd)->size = execp->a_bss; | |
e135f41b NC |
586 | |
587 | obj_textsec (abfd)->flags = | |
588 | (execp->a_trsize != 0 | |
589 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) | |
590 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
591 | obj_datasec (abfd)->flags = | |
592 | (execp->a_drsize != 0 | |
593 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) | |
594 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
595 | obj_bsssec (abfd)->flags = SEC_ALLOC; | |
596 | ||
597 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
598 | /* The common code can't fill in these things because they depend | |
599 | on either the start address of the text segment, the rounding | |
600 | up of virtual addresses between segments, or the starting file | |
601 | position of the text segment -- all of which varies among different | |
602 | versions of a.out. */ | |
603 | ||
604 | /* Call back to the format-dependent code to fill in the rest of the | |
605 | fields and do any further cleanup. Things that should be filled | |
606 | in by the callback: */ | |
e135f41b NC |
607 | struct exec *execp = exec_hdr (abfd); |
608 | ||
bbb1afc8 | 609 | obj_textsec (abfd)->size = N_TXTSIZE (execp); |
116c20d2 | 610 | /* Data and bss are already filled in since they're so standard. */ |
e135f41b | 611 | |
116c20d2 | 612 | /* The virtual memory addresses of the sections. */ |
bbb1afc8 AM |
613 | obj_textsec (abfd)->vma = N_TXTADDR (execp); |
614 | obj_datasec (abfd)->vma = N_DATADDR (execp); | |
615 | obj_bsssec (abfd)->vma = N_BSSADDR (execp); | |
e135f41b | 616 | |
116c20d2 | 617 | /* The file offsets of the sections. */ |
bbb1afc8 AM |
618 | obj_textsec (abfd)->filepos = N_TXTOFF (execp); |
619 | obj_datasec (abfd)->filepos = N_DATOFF (execp); | |
e135f41b | 620 | |
116c20d2 | 621 | /* The file offsets of the relocation info. */ |
bbb1afc8 AM |
622 | obj_textsec (abfd)->rel_filepos = N_TRELOFF (execp); |
623 | obj_datasec (abfd)->rel_filepos = N_DRELOFF (execp); | |
e135f41b NC |
624 | |
625 | /* The file offsets of the string table and symbol table. */ | |
bbb1afc8 AM |
626 | obj_str_filepos (abfd) = N_STROFF (execp); |
627 | obj_sym_filepos (abfd) = N_SYMOFF (execp); | |
e135f41b NC |
628 | |
629 | /* Determine the architecture and machine type of the object file. */ | |
630 | abfd->obj_arch = bfd_arch_obscure; | |
631 | ||
632 | adata(abfd)->page_size = TARGET_PAGE_SIZE; | |
633 | adata(abfd)->segment_size = SEGMENT_SIZE; | |
634 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
635 | ||
cb001c0d | 636 | return _bfd_no_cleanup; |
e135f41b NC |
637 | |
638 | /* The architecture is encoded in various ways in various a.out variants, | |
639 | or is not encoded at all in some of them. The relocation size depends | |
640 | on the architecture and the a.out variant. Finally, the return value | |
641 | is the bfd_target vector in use. If an error occurs, return zero and | |
642 | set bfd_error to the appropriate error code. | |
643 | ||
644 | Formats such as b.out, which have additional fields in the a.out | |
645 | header, should cope with them in this callback as well. */ | |
116c20d2 | 646 | #endif /* DOCUMENTATION */ |
e135f41b | 647 | |
cb001c0d | 648 | cleanup = (*callback_to_real_object_p)(abfd); |
e135f41b NC |
649 | |
650 | /* Now that the segment addresses have been worked out, take a better | |
651 | guess at whether the file is executable. If the entry point | |
652 | is within the text segment, assume it is. (This makes files | |
653 | executable even if their entry point address is 0, as long as | |
654 | their text starts at zero.). | |
655 | ||
656 | This test had to be changed to deal with systems where the text segment | |
657 | runs at a different location than the default. The problem is that the | |
658 | entry address can appear to be outside the text segment, thus causing an | |
659 | erroneous conclusion that the file isn't executable. | |
660 | ||
661 | To fix this, we now accept any non-zero entry point as an indication of | |
662 | executability. This will work most of the time, since only the linker | |
663 | sets the entry point, and that is likely to be non-zero for most systems. */ | |
664 | ||
665 | if (execp->a_entry != 0 | |
31af1e68 SC |
666 | || (execp->a_entry >= obj_textsec (abfd)->vma |
667 | && execp->a_entry < (obj_textsec (abfd)->vma | |
668 | + obj_textsec (abfd)->size) | |
669 | && execp->a_trsize == 0 | |
670 | && execp->a_drsize == 0)) | |
e135f41b NC |
671 | abfd->flags |= EXEC_P; |
672 | #ifdef STAT_FOR_EXEC | |
673 | else | |
674 | { | |
675 | struct stat stat_buf; | |
676 | ||
677 | /* The original heuristic doesn't work in some important cases. | |
07d6d2b8 AM |
678 | The a.out file has no information about the text start |
679 | address. For files (like kernels) linked to non-standard | |
680 | addresses (ld -Ttext nnn) the entry point may not be between | |
681 | the default text start (obj_textsec(abfd)->vma) and | |
682 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
683 | issue. Many kernels are loaded at non standard addresses. */ | |
e135f41b NC |
684 | if (abfd->iostream != NULL |
685 | && (abfd->flags & BFD_IN_MEMORY) == 0 | |
686 | && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0) | |
687 | && ((stat_buf.st_mode & 0111) != 0)) | |
688 | abfd->flags |= EXEC_P; | |
689 | } | |
690 | #endif /* STAT_FOR_EXEC */ | |
691 | ||
cb001c0d | 692 | if (!cleanup) |
e135f41b NC |
693 | { |
694 | free (rawptr); | |
695 | abfd->tdata.aout_data = oldrawptr; | |
696 | } | |
cb001c0d | 697 | return cleanup; |
e135f41b NC |
698 | } |
699 | ||
116c20d2 | 700 | /* Initialize ABFD for use with a.out files. */ |
e135f41b | 701 | |
b34976b6 | 702 | bfd_boolean |
116c20d2 | 703 | NAME (aout, mkobject) (bfd *abfd) |
e135f41b NC |
704 | { |
705 | struct aout_data_struct *rawptr; | |
986f0783 | 706 | size_t amt = sizeof (struct aout_data_struct); |
e135f41b NC |
707 | |
708 | bfd_set_error (bfd_error_system_call); | |
709 | ||
116c20d2 NC |
710 | /* Use an intermediate variable for clarity. */ |
711 | rawptr = bfd_zalloc (abfd, amt); | |
e135f41b NC |
712 | |
713 | if (rawptr == NULL) | |
b34976b6 | 714 | return FALSE; |
e135f41b NC |
715 | |
716 | abfd->tdata.aout_data = rawptr; | |
717 | exec_hdr (abfd) = &(rawptr->e); | |
718 | ||
116c20d2 NC |
719 | obj_textsec (abfd) = NULL; |
720 | obj_datasec (abfd) = NULL; | |
721 | obj_bsssec (abfd) = NULL; | |
e135f41b | 722 | |
b34976b6 | 723 | return TRUE; |
e135f41b NC |
724 | } |
725 | ||
116c20d2 NC |
726 | /* Keep track of machine architecture and machine type for |
727 | a.out's. Return the <<machine_type>> for a particular | |
728 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
729 | and machine can't be represented in a.out format. | |
e135f41b | 730 | |
116c20d2 NC |
731 | If the architecture is understood, machine type 0 (default) |
732 | is always understood. */ | |
e135f41b NC |
733 | |
734 | enum machine_type | |
116c20d2 NC |
735 | NAME (aout, machine_type) (enum bfd_architecture arch, |
736 | unsigned long machine, | |
737 | bfd_boolean *unknown) | |
e135f41b NC |
738 | { |
739 | enum machine_type arch_flags; | |
740 | ||
741 | arch_flags = M_UNKNOWN; | |
b34976b6 | 742 | *unknown = TRUE; |
e135f41b NC |
743 | |
744 | switch (arch) | |
745 | { | |
746 | case bfd_arch_sparc: | |
747 | if (machine == 0 | |
748 | || machine == bfd_mach_sparc | |
749 | || machine == bfd_mach_sparc_sparclite | |
750 | || machine == bfd_mach_sparc_v9) | |
751 | arch_flags = M_SPARC; | |
752 | else if (machine == bfd_mach_sparc_sparclet) | |
753 | arch_flags = M_SPARCLET; | |
754 | break; | |
755 | ||
e135f41b | 756 | case bfd_arch_i386: |
250d94fd AM |
757 | if (machine == 0 |
758 | || machine == bfd_mach_i386_i386 | |
759 | || machine == bfd_mach_i386_i386_intel_syntax) | |
760 | arch_flags = M_386; | |
e135f41b NC |
761 | break; |
762 | ||
e135f41b NC |
763 | case bfd_arch_arm: |
764 | if (machine == 0) arch_flags = M_ARM; | |
765 | break; | |
766 | ||
767 | case bfd_arch_mips: | |
768 | switch (machine) | |
769 | { | |
770 | case 0: | |
771 | case 2000: | |
772 | case bfd_mach_mips3000: | |
07d6d2b8 | 773 | arch_flags = M_MIPS1; |
e135f41b | 774 | break; |
116c20d2 | 775 | case bfd_mach_mips4000: /* MIPS3 */ |
e135f41b | 776 | case bfd_mach_mips4400: |
116c20d2 NC |
777 | case bfd_mach_mips8000: /* MIPS4 */ |
778 | case bfd_mach_mips6000: /* Real MIPS2: */ | |
07d6d2b8 | 779 | arch_flags = M_MIPS2; |
e135f41b NC |
780 | break; |
781 | default: | |
782 | arch_flags = M_UNKNOWN; | |
783 | break; | |
784 | } | |
785 | break; | |
786 | ||
787 | case bfd_arch_ns32k: | |
788 | switch (machine) | |
789 | { | |
07d6d2b8 | 790 | case 0: arch_flags = M_NS32532; break; |
e135f41b NC |
791 | case 32032: arch_flags = M_NS32032; break; |
792 | case 32532: arch_flags = M_NS32532; break; | |
793 | default: arch_flags = M_UNKNOWN; break; | |
794 | } | |
795 | break; | |
796 | ||
797 | case bfd_arch_pdp11: | |
798 | /* TODO: arch_flags = M_PDP11; */ | |
b34976b6 | 799 | *unknown = FALSE; |
e135f41b NC |
800 | break; |
801 | ||
802 | case bfd_arch_vax: | |
b34976b6 | 803 | *unknown = FALSE; |
e135f41b | 804 | break; |
dc810e39 | 805 | |
e135f41b NC |
806 | default: |
807 | arch_flags = M_UNKNOWN; | |
808 | } | |
809 | ||
810 | if (arch_flags != M_UNKNOWN) | |
b34976b6 | 811 | *unknown = FALSE; |
e135f41b NC |
812 | |
813 | return arch_flags; | |
814 | } | |
815 | ||
116c20d2 NC |
816 | /* Set the architecture and the machine of the ABFD to the |
817 | values ARCH and MACHINE. Verify that @ABFD's format | |
818 | can support the architecture required. */ | |
e135f41b | 819 | |
b34976b6 | 820 | bfd_boolean |
116c20d2 NC |
821 | NAME (aout, set_arch_mach) (bfd *abfd, |
822 | enum bfd_architecture arch, | |
823 | unsigned long machine) | |
e135f41b NC |
824 | { |
825 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) | |
b34976b6 | 826 | return FALSE; |
e135f41b NC |
827 | |
828 | if (arch != bfd_arch_unknown) | |
829 | { | |
b34976b6 | 830 | bfd_boolean unknown; |
e135f41b | 831 | |
116c20d2 | 832 | NAME (aout, machine_type) (arch, machine, &unknown); |
e135f41b | 833 | if (unknown) |
b34976b6 | 834 | return FALSE; |
e135f41b NC |
835 | } |
836 | ||
837 | obj_reloc_entry_size (abfd) = RELOC_SIZE; | |
838 | ||
839 | return (*aout_backend_info(abfd)->set_sizes) (abfd); | |
840 | } | |
841 | ||
842 | static void | |
116c20d2 | 843 | adjust_o_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
844 | { |
845 | file_ptr pos = adata (abfd).exec_bytes_size; | |
846 | bfd_vma vma = 0; | |
847 | int pad = 0; | |
dda2980f AM |
848 | asection *text = obj_textsec (abfd); |
849 | asection *data = obj_datasec (abfd); | |
850 | asection *bss = obj_bsssec (abfd); | |
e135f41b NC |
851 | |
852 | /* Text. */ | |
dda2980f AM |
853 | text->filepos = pos; |
854 | if (!text->user_set_vma) | |
855 | text->vma = vma; | |
e135f41b | 856 | else |
dda2980f | 857 | vma = text->vma; |
e135f41b | 858 | |
dda2980f AM |
859 | pos += execp->a_text; |
860 | vma += execp->a_text; | |
e135f41b NC |
861 | |
862 | /* Data. */ | |
dda2980f | 863 | if (!data->user_set_vma) |
e135f41b | 864 | { |
e135f41b NC |
865 | pos += pad; |
866 | vma += pad; | |
dda2980f | 867 | data->vma = vma; |
e135f41b NC |
868 | } |
869 | else | |
dda2980f AM |
870 | vma = data->vma; |
871 | execp->a_text += pad; | |
872 | ||
873 | data->filepos = pos; | |
874 | pos += data->size; | |
875 | vma += data->size; | |
e135f41b NC |
876 | |
877 | /* BSS. */ | |
dda2980f | 878 | if (!bss->user_set_vma) |
e135f41b | 879 | { |
e135f41b NC |
880 | pos += pad; |
881 | vma += pad; | |
dda2980f | 882 | bss->vma = vma; |
e135f41b | 883 | } |
fa1477dc | 884 | else if (data->size > 0 || bss->size > 0) /* PR25677: for objcopy --extract-symbol */ |
e135f41b | 885 | { |
08da05b0 | 886 | /* The VMA of the .bss section is set by the VMA of the |
07d6d2b8 AM |
887 | .data section plus the size of the .data section. We may |
888 | need to add padding bytes to make this true. */ | |
dda2980f AM |
889 | pad = bss->vma - vma; |
890 | if (pad < 0) | |
891 | pad = 0; | |
892 | pos += pad; | |
e135f41b | 893 | } |
dda2980f AM |
894 | execp->a_data = data->size + pad; |
895 | bss->filepos = pos; | |
896 | execp->a_bss = bss->size; | |
e135f41b | 897 | |
bbb1afc8 | 898 | N_SET_MAGIC (execp, OMAGIC); |
e135f41b NC |
899 | } |
900 | ||
901 | static void | |
116c20d2 | 902 | adjust_z_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b NC |
903 | { |
904 | bfd_size_type data_pad, text_pad; | |
905 | file_ptr text_end; | |
dc810e39 | 906 | const struct aout_backend_data *abdp; |
dda2980f AM |
907 | /* TRUE if text includes exec header. */ |
908 | bfd_boolean ztih; | |
909 | asection *text = obj_textsec (abfd); | |
910 | asection *data = obj_datasec (abfd); | |
911 | asection *bss = obj_bsssec (abfd); | |
dc810e39 | 912 | |
e135f41b NC |
913 | abdp = aout_backend_info (abfd); |
914 | ||
915 | /* Text. */ | |
916 | ztih = (abdp != NULL | |
917 | && (abdp->text_includes_header | |
918 | || obj_aout_subformat (abfd) == q_magic_format)); | |
dda2980f AM |
919 | text->filepos = (ztih |
920 | ? adata (abfd).exec_bytes_size | |
921 | : adata (abfd).zmagic_disk_block_size); | |
922 | if (!text->user_set_vma) | |
e135f41b NC |
923 | { |
924 | /* ?? Do we really need to check for relocs here? */ | |
dda2980f AM |
925 | text->vma = ((abfd->flags & HAS_RELOC) |
926 | ? 0 | |
927 | : (ztih | |
928 | ? abdp->default_text_vma + adata (abfd).exec_bytes_size | |
929 | : abdp->default_text_vma)); | |
e135f41b NC |
930 | text_pad = 0; |
931 | } | |
932 | else | |
933 | { | |
934 | /* The .text section is being loaded at an unusual address. We | |
07d6d2b8 AM |
935 | may need to pad it such that the .data section starts at a page |
936 | boundary. */ | |
e135f41b | 937 | if (ztih) |
dda2980f | 938 | text_pad = ((text->filepos - text->vma) |
e135f41b NC |
939 | & (adata (abfd).page_size - 1)); |
940 | else | |
dda2980f | 941 | text_pad = (-text->vma |
e135f41b NC |
942 | & (adata (abfd).page_size - 1)); |
943 | } | |
944 | ||
945 | /* Find start of data. */ | |
946 | if (ztih) | |
947 | { | |
dda2980f | 948 | text_end = text->filepos + execp->a_text; |
e135f41b NC |
949 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
950 | } | |
951 | else | |
952 | { | |
953 | /* Note that if page_size == zmagic_disk_block_size, then | |
954 | filepos == page_size, and this case is the same as the ztih | |
955 | case. */ | |
dda2980f | 956 | text_end = execp->a_text; |
e135f41b | 957 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
dda2980f | 958 | text_end += text->filepos; |
e135f41b | 959 | } |
dda2980f | 960 | execp->a_text += text_pad; |
e135f41b NC |
961 | |
962 | /* Data. */ | |
dda2980f | 963 | if (!data->user_set_vma) |
e135f41b NC |
964 | { |
965 | bfd_vma vma; | |
dda2980f AM |
966 | vma = text->vma + execp->a_text; |
967 | data->vma = BFD_ALIGN (vma, adata (abfd).segment_size); | |
e135f41b NC |
968 | } |
969 | if (abdp && abdp->zmagic_mapped_contiguous) | |
970 | { | |
dda2980f AM |
971 | text_pad = data->vma - (text->vma + execp->a_text); |
972 | /* Only pad the text section if the data | |
973 | section is going to be placed after it. */ | |
974 | if (text_pad > 0) | |
975 | execp->a_text += text_pad; | |
e135f41b | 976 | } |
dda2980f | 977 | data->filepos = text->filepos + execp->a_text; |
dc810e39 | 978 | |
e135f41b | 979 | /* Fix up exec header while we're at it. */ |
e135f41b | 980 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
dda2980f | 981 | execp->a_text += adata (abfd).exec_bytes_size; |
bbb1afc8 | 982 | N_SET_MAGIC (execp, ZMAGIC); |
e135f41b NC |
983 | |
984 | /* Spec says data section should be rounded up to page boundary. */ | |
dda2980f AM |
985 | execp->a_data = align_power (data->size, bss->alignment_power); |
986 | execp->a_data = BFD_ALIGN (execp->a_data, adata (abfd).page_size); | |
987 | data_pad = execp->a_data - data->size; | |
e135f41b NC |
988 | |
989 | /* BSS. */ | |
dda2980f AM |
990 | if (!bss->user_set_vma) |
991 | bss->vma = data->vma + execp->a_data; | |
e135f41b NC |
992 | /* If the BSS immediately follows the data section and extra space |
993 | in the page is left after the data section, fudge data | |
994 | in the header so that the bss section looks smaller by that | |
995 | amount. We'll start the bss section there, and lie to the OS. | |
996 | (Note that a linker script, as well as the above assignment, | |
997 | could have explicitly set the BSS vma to immediately follow | |
998 | the data section.) */ | |
dda2980f AM |
999 | if (align_power (bss->vma, bss->alignment_power) == data->vma + execp->a_data) |
1000 | execp->a_bss = data_pad > bss->size ? 0 : bss->size - data_pad; | |
e135f41b | 1001 | else |
dda2980f | 1002 | execp->a_bss = bss->size; |
e135f41b NC |
1003 | } |
1004 | ||
1005 | static void | |
116c20d2 | 1006 | adjust_n_magic (bfd *abfd, struct internal_exec *execp) |
e135f41b | 1007 | { |
dda2980f | 1008 | file_ptr pos = adata (abfd).exec_bytes_size; |
e135f41b NC |
1009 | bfd_vma vma = 0; |
1010 | int pad; | |
dda2980f AM |
1011 | asection *text = obj_textsec (abfd); |
1012 | asection *data = obj_datasec (abfd); | |
1013 | asection *bss = obj_bsssec (abfd); | |
dc810e39 | 1014 | |
e135f41b | 1015 | /* Text. */ |
dda2980f AM |
1016 | text->filepos = pos; |
1017 | if (!text->user_set_vma) | |
1018 | text->vma = vma; | |
e135f41b | 1019 | else |
dda2980f AM |
1020 | vma = text->vma; |
1021 | pos += execp->a_text; | |
1022 | vma += execp->a_text; | |
e135f41b NC |
1023 | |
1024 | /* Data. */ | |
dda2980f AM |
1025 | data->filepos = pos; |
1026 | if (!data->user_set_vma) | |
1027 | data->vma = BFD_ALIGN (vma, adata (abfd).segment_size); | |
1028 | vma = data->vma; | |
dc810e39 | 1029 | |
e135f41b | 1030 | /* Since BSS follows data immediately, see if it needs alignment. */ |
dda2980f AM |
1031 | vma += data->size; |
1032 | pad = align_power (vma, bss->alignment_power) - vma; | |
1033 | execp->a_data = data->size + pad; | |
1034 | pos += execp->a_data; | |
e135f41b NC |
1035 | |
1036 | /* BSS. */ | |
dda2980f AM |
1037 | if (!bss->user_set_vma) |
1038 | bss->vma = vma; | |
e135f41b | 1039 | else |
dda2980f | 1040 | vma = bss->vma; |
e135f41b NC |
1041 | |
1042 | /* Fix up exec header. */ | |
dda2980f | 1043 | execp->a_bss = bss->size; |
bbb1afc8 | 1044 | N_SET_MAGIC (execp, NMAGIC); |
e135f41b NC |
1045 | } |
1046 | ||
fa1477dc SC |
1047 | static void |
1048 | adjust_i_magic (bfd *abfd, struct internal_exec *execp) | |
1049 | { | |
1050 | file_ptr pos = adata (abfd).exec_bytes_size; | |
1051 | bfd_vma vma = 0; | |
1052 | int pad; | |
1053 | asection *text = obj_textsec (abfd); | |
1054 | asection *data = obj_datasec (abfd); | |
1055 | asection *bss = obj_bsssec (abfd); | |
1056 | ||
1057 | /* Text. */ | |
1058 | text->filepos = pos; | |
1059 | if (!text->user_set_vma) | |
1060 | text->vma = vma; | |
1061 | else | |
1062 | vma = text->vma; | |
1063 | pos += execp->a_text; | |
1064 | ||
1065 | /* Data. */ | |
1066 | data->filepos = pos; | |
1067 | if (!data->user_set_vma) | |
1068 | data->vma = 0; | |
1069 | vma = data->vma; | |
1070 | ||
1071 | /* Since BSS follows data immediately, see if it needs alignment. */ | |
1072 | vma += data->size; | |
1073 | pad = align_power (vma, bss->alignment_power) - vma; | |
1074 | execp->a_data = data->size + pad; | |
1075 | pos += execp->a_data; | |
1076 | ||
1077 | /* BSS. */ | |
1078 | if (!bss->user_set_vma) | |
1079 | bss->vma = vma; | |
1080 | else | |
1081 | vma = bss->vma; | |
1082 | ||
1083 | /* Fix up exec header. */ | |
1084 | execp->a_bss = bss->size; | |
1085 | N_SET_MAGIC (execp, IMAGIC); | |
1086 | } | |
1087 | ||
b34976b6 | 1088 | bfd_boolean |
3a8c4a5b | 1089 | NAME (aout, adjust_sizes_and_vmas) (bfd *abfd) |
e135f41b NC |
1090 | { |
1091 | struct internal_exec *execp = exec_hdr (abfd); | |
1092 | ||
116c20d2 | 1093 | if (! NAME (aout, make_sections) (abfd)) |
b34976b6 | 1094 | return FALSE; |
e135f41b | 1095 | |
dda2980f | 1096 | if (adata (abfd).magic != undecided_magic) |
b34976b6 | 1097 | return TRUE; |
e135f41b | 1098 | |
dda2980f AM |
1099 | execp->a_text = align_power (obj_textsec (abfd)->size, |
1100 | obj_textsec (abfd)->alignment_power); | |
e135f41b | 1101 | |
e135f41b NC |
1102 | /* Rule (heuristic) for when to pad to a new page. Note that there |
1103 | are (at least) two ways demand-paged (ZMAGIC) files have been | |
1104 | handled. Most Berkeley-based systems start the text segment at | |
1105 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text | |
1106 | segment right after the exec header; the latter is counted in the | |
1107 | text segment size, and is paged in by the kernel with the rest of | |
dda2980f | 1108 | the text. */ |
e135f41b NC |
1109 | |
1110 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1111 | to understand enough to implement it. Better would probably be to go | |
1112 | right from BFD flags to alignment/positioning characteristics. But the | |
1113 | old code was sloppy enough about handling the flags, and had enough | |
1114 | other magic, that it was a little hard for me to understand. I think | |
1115 | I understand it better now, but I haven't time to do the cleanup this | |
1116 | minute. */ | |
1117 | ||
fa1477dc SC |
1118 | if (separate_i_d) |
1119 | adata (abfd).magic = i_magic; | |
1120 | else if (abfd->flags & WP_TEXT) | |
dda2980f | 1121 | adata (abfd).magic = n_magic; |
e135f41b | 1122 | else |
dda2980f | 1123 | adata (abfd).magic = o_magic; |
e135f41b NC |
1124 | |
1125 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1126 | #if __GNUC__ >= 2 | |
1127 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1128 | ({ char *str; | |
dda2980f AM |
1129 | switch (adata (abfd).magic) |
1130 | { | |
1131 | case n_magic: str = "NMAGIC"; break; | |
1132 | case o_magic: str = "OMAGIC"; break; | |
fa1477dc | 1133 | case i_magic: str = "IMAGIC"; break; |
dda2980f AM |
1134 | case z_magic: str = "ZMAGIC"; break; |
1135 | default: abort (); | |
1136 | } | |
e135f41b NC |
1137 | str; |
1138 | }), | |
dda2980f AM |
1139 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
1140 | obj_textsec (abfd)->alignment_power, | |
1141 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, | |
1142 | obj_datasec (abfd)->alignment_power, | |
1143 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size, | |
1144 | obj_bsssec (abfd)->alignment_power); | |
e135f41b NC |
1145 | #endif |
1146 | #endif | |
1147 | ||
dda2980f | 1148 | switch (adata (abfd).magic) |
e135f41b NC |
1149 | { |
1150 | case o_magic: | |
1151 | adjust_o_magic (abfd, execp); | |
1152 | break; | |
1153 | case z_magic: | |
1154 | adjust_z_magic (abfd, execp); | |
1155 | break; | |
1156 | case n_magic: | |
1157 | adjust_n_magic (abfd, execp); | |
1158 | break; | |
fa1477dc SC |
1159 | case i_magic: |
1160 | adjust_i_magic (abfd, execp); | |
1161 | break; | |
e135f41b NC |
1162 | default: |
1163 | abort (); | |
1164 | } | |
1165 | ||
1166 | #ifdef BFD_AOUT_DEBUG | |
1167 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
dda2980f AM |
1168 | obj_textsec (abfd)->vma, execp->a_text, |
1169 | obj_textsec (abfd)->filepos, | |
1170 | obj_datasec (abfd)->vma, execp->a_data, | |
1171 | obj_datasec (abfd)->filepos, | |
1172 | obj_bsssec (abfd)->vma, execp->a_bss); | |
e135f41b NC |
1173 | #endif |
1174 | ||
b34976b6 | 1175 | return TRUE; |
e135f41b NC |
1176 | } |
1177 | ||
116c20d2 | 1178 | /* Called by the BFD in response to a bfd_make_section request. */ |
e135f41b | 1179 | |
b34976b6 | 1180 | bfd_boolean |
116c20d2 | 1181 | NAME (aout, new_section_hook) (bfd *abfd, asection *newsect) |
e135f41b | 1182 | { |
116c20d2 | 1183 | /* Align to double at least. */ |
e135f41b NC |
1184 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; |
1185 | ||
e135f41b NC |
1186 | if (bfd_get_format (abfd) == bfd_object) |
1187 | { | |
1188 | if (obj_textsec (abfd) == NULL | |
f592407e | 1189 | && !strcmp (newsect->name, ".text")) |
e135f41b NC |
1190 | { |
1191 | obj_textsec(abfd)= newsect; | |
1192 | newsect->target_index = N_TEXT; | |
e135f41b | 1193 | } |
f592407e AM |
1194 | else if (obj_datasec (abfd) == NULL |
1195 | && !strcmp (newsect->name, ".data")) | |
1196 | { | |
1197 | obj_datasec (abfd) = newsect; | |
1198 | newsect->target_index = N_DATA; | |
1199 | } | |
1200 | else if (obj_bsssec (abfd) == NULL | |
1201 | && !strcmp (newsect->name, ".bss")) | |
1202 | { | |
1203 | obj_bsssec (abfd) = newsect; | |
1204 | newsect->target_index = N_BSS; | |
1205 | } | |
1206 | } | |
e135f41b | 1207 | |
116c20d2 | 1208 | /* We allow more than three sections internally. */ |
f592407e | 1209 | return _bfd_generic_new_section_hook (abfd, newsect); |
e135f41b NC |
1210 | } |
1211 | ||
b34976b6 | 1212 | bfd_boolean |
116c20d2 NC |
1213 | NAME (aout, set_section_contents) (bfd *abfd, |
1214 | sec_ptr section, | |
1215 | const void * location, | |
1216 | file_ptr offset, | |
1217 | bfd_size_type count) | |
e135f41b | 1218 | { |
e135f41b NC |
1219 | if (! abfd->output_has_begun) |
1220 | { | |
3a8c4a5b | 1221 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
b34976b6 | 1222 | return FALSE; |
e135f41b NC |
1223 | } |
1224 | ||
1225 | if (section == obj_bsssec (abfd)) | |
1226 | { | |
1227 | bfd_set_error (bfd_error_no_contents); | |
b34976b6 | 1228 | return FALSE; |
e135f41b NC |
1229 | } |
1230 | ||
1231 | if (section != obj_textsec (abfd) | |
1232 | && section != obj_datasec (abfd)) | |
1233 | { | |
4eca0228 | 1234 | _bfd_error_handler |
695344c0 | 1235 | /* xgettext:c-format */ |
871b3ab2 | 1236 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
dae82561 | 1237 | abfd, section); |
e135f41b | 1238 | bfd_set_error (bfd_error_nonrepresentable_section); |
b34976b6 | 1239 | return FALSE; |
e135f41b NC |
1240 | } |
1241 | ||
1242 | if (count != 0) | |
1243 | { | |
1244 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 1245 | || bfd_bwrite (location, count, abfd) != count) |
b34976b6 | 1246 | return FALSE; |
e135f41b NC |
1247 | } |
1248 | ||
b34976b6 | 1249 | return TRUE; |
e135f41b NC |
1250 | } |
1251 | \f | |
1252 | /* Read the external symbols from an a.out file. */ | |
1253 | ||
b34976b6 | 1254 | static bfd_boolean |
116c20d2 | 1255 | aout_get_external_symbols (bfd *abfd) |
e135f41b | 1256 | { |
116c20d2 | 1257 | if (obj_aout_external_syms (abfd) == NULL) |
e135f41b NC |
1258 | { |
1259 | bfd_size_type count; | |
1260 | struct external_nlist *syms; | |
1261 | ||
1262 | count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; | |
1263 | ||
37e3922e NC |
1264 | /* PR 17512: file: 011f5a08. */ |
1265 | if (count == 0) | |
49987e5c NC |
1266 | { |
1267 | obj_aout_external_syms (abfd) = NULL; | |
1268 | obj_aout_external_sym_count (abfd) = count; | |
1269 | return TRUE; | |
1270 | } | |
1271 | ||
e135f41b | 1272 | #ifdef USE_MMAP |
82e51918 AM |
1273 | if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), |
1274 | exec_hdr (abfd)->a_syms, | |
b34976b6 AM |
1275 | &obj_aout_sym_window (abfd), TRUE)) |
1276 | return FALSE; | |
e135f41b NC |
1277 | syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; |
1278 | #else | |
1279 | /* We allocate using malloc to make the values easy to free | |
1280 | later on. If we put them on the objalloc it might not be | |
1281 | possible to free them. */ | |
2bb3687b AM |
1282 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
1283 | return FALSE; | |
1284 | syms = (struct external_nlist *) | |
1285 | _bfd_malloc_and_read (abfd, count * EXTERNAL_NLIST_SIZE, | |
1286 | count * EXTERNAL_NLIST_SIZE); | |
31af1e68 | 1287 | if (syms == NULL) |
b34976b6 | 1288 | return FALSE; |
e135f41b NC |
1289 | #endif |
1290 | ||
1291 | obj_aout_external_syms (abfd) = syms; | |
1292 | obj_aout_external_sym_count (abfd) = count; | |
1293 | } | |
dc810e39 | 1294 | |
e135f41b NC |
1295 | if (obj_aout_external_strings (abfd) == NULL |
1296 | && exec_hdr (abfd)->a_syms != 0) | |
1297 | { | |
1298 | unsigned char string_chars[BYTES_IN_LONG]; | |
1299 | bfd_size_type stringsize; | |
1300 | char *strings; | |
31af1e68 | 1301 | bfd_size_type amt = BYTES_IN_LONG; |
e135f41b NC |
1302 | |
1303 | /* Get the size of the strings. */ | |
1304 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
31af1e68 | 1305 | || bfd_bread ((void *) string_chars, amt, abfd) != amt) |
b34976b6 | 1306 | return FALSE; |
dc810e39 | 1307 | stringsize = H_GET_32 (abfd, string_chars); |
31af1e68 SC |
1308 | if (stringsize == 0) |
1309 | stringsize = 1; | |
1310 | else if (stringsize < BYTES_IN_LONG | |
1311 | || (size_t) stringsize != stringsize) | |
1312 | { | |
1313 | bfd_set_error (bfd_error_bad_value); | |
1314 | return FALSE; | |
1315 | } | |
e135f41b NC |
1316 | |
1317 | #ifdef USE_MMAP | |
31af1e68 | 1318 | if (stringsize >= BYTES_IN_LONG) |
e135f41b | 1319 | { |
31af1e68 SC |
1320 | if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize + 1, |
1321 | &obj_aout_string_window (abfd), TRUE)) | |
1322 | return FALSE; | |
1323 | strings = (char *) obj_aout_string_window (abfd).data; | |
e135f41b | 1324 | } |
31af1e68 | 1325 | else |
e135f41b | 1326 | #endif |
31af1e68 SC |
1327 | { |
1328 | strings = (char *) bfd_malloc (stringsize + 1); | |
1329 | if (strings == NULL) | |
1330 | return FALSE; | |
1331 | ||
1332 | if (stringsize >= BYTES_IN_LONG) | |
1333 | { | |
1334 | /* Keep the string count in the buffer for convenience | |
1335 | when indexing with e_strx. */ | |
1336 | amt = stringsize - BYTES_IN_LONG; | |
1337 | if (bfd_bread (strings + BYTES_IN_LONG, amt, abfd) != amt) | |
1338 | { | |
1339 | free (strings); | |
1340 | return FALSE; | |
1341 | } | |
1342 | } | |
1343 | } | |
e135f41b NC |
1344 | /* Ensure that a zero index yields an empty string. */ |
1345 | strings[0] = '\0'; | |
1346 | ||
31af1e68 SC |
1347 | /* Ensure that the string buffer is NUL terminated. */ |
1348 | strings[stringsize] = 0; | |
e135f41b NC |
1349 | |
1350 | obj_aout_external_strings (abfd) = strings; | |
1351 | obj_aout_external_string_size (abfd) = stringsize; | |
1352 | } | |
1353 | ||
b34976b6 | 1354 | return TRUE; |
e135f41b NC |
1355 | } |
1356 | ||
1357 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type | |
1358 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1359 | nlist structure. This function is responsible for setting | |
1360 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
1361 | ||
b34976b6 | 1362 | static bfd_boolean |
116c20d2 NC |
1363 | translate_from_native_sym_flags (bfd *abfd, |
1364 | aout_symbol_type *cache_ptr) | |
e135f41b NC |
1365 | { |
1366 | flagword visible; | |
1367 | ||
a975c88e | 1368 | if (is_stab (cache_ptr->type, cache_ptr->symbol.name)) |
e135f41b NC |
1369 | { |
1370 | asection *sec; | |
1371 | ||
1372 | /* This is a debugging symbol. */ | |
e135f41b NC |
1373 | cache_ptr->symbol.flags = BSF_DEBUGGING; |
1374 | ||
1375 | /* Work out the symbol section. */ | |
a975c88e | 1376 | switch (cache_ptr->type) |
e135f41b | 1377 | { |
a975c88e SC |
1378 | case N_SO: |
1379 | case N_SOL: | |
1380 | case N_FUN: | |
1381 | case N_ENTRY: | |
1382 | case N_SLINE: | |
e135f41b NC |
1383 | case N_FN: |
1384 | sec = obj_textsec (abfd); | |
1385 | break; | |
a975c88e SC |
1386 | case N_STSYM: |
1387 | case N_DSLINE: | |
e135f41b NC |
1388 | sec = obj_datasec (abfd); |
1389 | break; | |
a975c88e SC |
1390 | case N_LCSYM: |
1391 | case N_BSLINE: | |
e135f41b NC |
1392 | sec = obj_bsssec (abfd); |
1393 | break; | |
1394 | default: | |
e135f41b NC |
1395 | sec = bfd_abs_section_ptr; |
1396 | break; | |
1397 | } | |
1398 | ||
1399 | cache_ptr->symbol.section = sec; | |
1400 | cache_ptr->symbol.value -= sec->vma; | |
1401 | ||
b34976b6 | 1402 | return TRUE; |
e135f41b NC |
1403 | } |
1404 | ||
1405 | /* Get the default visibility. This does not apply to all types, so | |
1406 | we just hold it in a local variable to use if wanted. */ | |
1407 | if ((cache_ptr->type & N_EXT) == 0) | |
1408 | visible = BSF_LOCAL; | |
1409 | else | |
1410 | visible = BSF_GLOBAL; | |
1411 | ||
1412 | switch (cache_ptr->type) | |
1413 | { | |
1414 | default: | |
1415 | case N_ABS: case N_ABS | N_EXT: | |
1416 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1417 | cache_ptr->symbol.flags = visible; | |
1418 | break; | |
1419 | ||
1420 | case N_UNDF | N_EXT: | |
1421 | if (cache_ptr->symbol.value != 0) | |
1422 | { | |
1423 | /* This is a common symbol. */ | |
1424 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
1425 | cache_ptr->symbol.section = bfd_com_section_ptr; | |
1426 | } | |
1427 | else | |
1428 | { | |
1429 | cache_ptr->symbol.flags = 0; | |
1430 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1431 | } | |
1432 | break; | |
1433 | ||
1434 | case N_TEXT: case N_TEXT | N_EXT: | |
1435 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1436 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1437 | cache_ptr->symbol.flags = visible; | |
1438 | break; | |
1439 | ||
1440 | case N_DATA: case N_DATA | N_EXT: | |
1441 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1442 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1443 | cache_ptr->symbol.flags = visible; | |
1444 | break; | |
1445 | ||
1446 | case N_BSS: case N_BSS | N_EXT: | |
1447 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1448 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1449 | cache_ptr->symbol.flags = visible; | |
1450 | break; | |
1451 | } | |
1452 | ||
b34976b6 | 1453 | return TRUE; |
e135f41b NC |
1454 | } |
1455 | ||
1456 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ | |
1457 | ||
b34976b6 | 1458 | static bfd_boolean |
116c20d2 NC |
1459 | translate_to_native_sym_flags (bfd *abfd, |
1460 | asymbol *cache_ptr, | |
1461 | struct external_nlist *sym_pointer) | |
e135f41b NC |
1462 | { |
1463 | bfd_vma value = cache_ptr->value; | |
1464 | asection *sec; | |
1465 | bfd_vma off; | |
a975c88e | 1466 | const char *name = cache_ptr->name != NULL ? cache_ptr->name : "*unknown*"; |
e135f41b NC |
1467 | |
1468 | /* Mask out any existing type bits in case copying from one section | |
1469 | to another. */ | |
a975c88e SC |
1470 | if (!is_stab (sym_pointer->e_type[0], name)) |
1471 | sym_pointer->e_type[0] &= ~N_TYPE; | |
e135f41b | 1472 | |
e6f7f6d1 | 1473 | sec = bfd_asymbol_section (cache_ptr); |
e135f41b NC |
1474 | off = 0; |
1475 | ||
1476 | if (sec == NULL) | |
1477 | { | |
1478 | /* This case occurs, e.g., for the *DEBUG* section of a COFF | |
1479 | file. */ | |
4eca0228 | 1480 | _bfd_error_handler |
695344c0 | 1481 | /* xgettext:c-format */ |
871b3ab2 | 1482 | (_("%pB: can not represent section for symbol `%s' in a.out object file format"), |
a975c88e | 1483 | abfd, name); |
e135f41b | 1484 | bfd_set_error (bfd_error_nonrepresentable_section); |
b34976b6 | 1485 | return FALSE; |
e135f41b NC |
1486 | } |
1487 | ||
1488 | if (sec->output_section != NULL) | |
1489 | { | |
1490 | off = sec->output_offset; | |
1491 | sec = sec->output_section; | |
1492 | } | |
1493 | ||
1494 | if (bfd_is_abs_section (sec)) | |
1495 | sym_pointer->e_type[0] |= N_ABS; | |
1496 | else if (sec == obj_textsec (abfd)) | |
1497 | sym_pointer->e_type[0] |= N_TEXT; | |
1498 | else if (sec == obj_datasec (abfd)) | |
1499 | sym_pointer->e_type[0] |= N_DATA; | |
1500 | else if (sec == obj_bsssec (abfd)) | |
1501 | sym_pointer->e_type[0] |= N_BSS; | |
1502 | else if (bfd_is_und_section (sec)) | |
1503 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1504 | else if (bfd_is_com_section (sec)) | |
1505 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1506 | else | |
1507 | { | |
4eca0228 | 1508 | _bfd_error_handler |
695344c0 | 1509 | /* xgettext:c-format */ |
871b3ab2 | 1510 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
d003868e | 1511 | abfd, sec); |
e135f41b | 1512 | bfd_set_error (bfd_error_nonrepresentable_section); |
b34976b6 | 1513 | return FALSE; |
e135f41b NC |
1514 | } |
1515 | ||
1516 | /* Turn the symbol from section relative to absolute again */ | |
1517 | value += sec->vma + off; | |
1518 | ||
1519 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) | |
1520 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1521 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
1522 | sym_pointer->e_type[0] |= N_EXT; | |
1523 | ||
e135f41b NC |
1524 | PUT_WORD(abfd, value, sym_pointer->e_value); |
1525 | ||
b34976b6 | 1526 | return TRUE; |
e135f41b NC |
1527 | } |
1528 | \f | |
1529 | /* Native-level interface to symbols. */ | |
1530 | ||
1531 | asymbol * | |
116c20d2 | 1532 | NAME (aout, make_empty_symbol) (bfd *abfd) |
e135f41b | 1533 | { |
986f0783 | 1534 | size_t amt = sizeof (aout_symbol_type); |
d3ce72d0 | 1535 | aout_symbol_type *new_symbol_type = bfd_zalloc (abfd, amt); |
116c20d2 | 1536 | |
d3ce72d0 | 1537 | if (!new_symbol_type) |
e135f41b | 1538 | return NULL; |
d3ce72d0 | 1539 | new_symbol_type->symbol.the_bfd = abfd; |
e135f41b | 1540 | |
d3ce72d0 | 1541 | return &new_symbol_type->symbol; |
e135f41b NC |
1542 | } |
1543 | ||
3b9313c4 | 1544 | /* Translate a set of external symbols into internal symbols. */ |
e135f41b | 1545 | |
b34976b6 | 1546 | bfd_boolean |
116c20d2 NC |
1547 | NAME (aout, translate_symbol_table) (bfd *abfd, |
1548 | aout_symbol_type *in, | |
1549 | struct external_nlist *ext, | |
1550 | bfd_size_type count, | |
1551 | char *str, | |
1552 | bfd_size_type strsize, | |
1553 | bfd_boolean dynamic) | |
e135f41b NC |
1554 | { |
1555 | struct external_nlist *ext_end; | |
1556 | ||
1557 | ext_end = ext + count; | |
1558 | for (; ext < ext_end; ext++, in++) | |
1559 | { | |
1560 | bfd_vma x; | |
a975c88e | 1561 | int ovly; |
e135f41b NC |
1562 | |
1563 | x = GET_WORD (abfd, ext->e_strx); | |
1564 | in->symbol.the_bfd = abfd; | |
1565 | ||
1566 | /* For the normal symbols, the zero index points at the number | |
1567 | of bytes in the string table but is to be interpreted as the | |
1568 | null string. For the dynamic symbols, the number of bytes in | |
1569 | the string table is stored in the __DYNAMIC structure and the | |
1570 | zero index points at an actual string. */ | |
1571 | if (x == 0 && ! dynamic) | |
1572 | in->symbol.name = ""; | |
1573 | else if (x < strsize) | |
1574 | in->symbol.name = str + x; | |
1575 | else | |
31af1e68 SC |
1576 | { |
1577 | _bfd_error_handler | |
1578 | (_("%pB: invalid string offset %" PRIu64 " >= %" PRIu64), | |
1579 | abfd, (uint64_t) x, (uint64_t) strsize); | |
1580 | bfd_set_error (bfd_error_bad_value); | |
1581 | return FALSE; | |
1582 | } | |
e135f41b | 1583 | |
a975c88e SC |
1584 | ovly = H_GET_8 (abfd, ext->e_ovly); |
1585 | if (ovly != 0) | |
1586 | { | |
1587 | _bfd_error_handler | |
1588 | (_("%pB: symbol indicates overlay (not supported)"), abfd); | |
1589 | bfd_set_error (bfd_error_bad_value); | |
1590 | return FALSE; | |
1591 | } | |
1592 | ||
23c8270e | 1593 | in->symbol.value = GET_WORD (abfd, ext->e_value); |
a975c88e SC |
1594 | /* e_desc is zero for normal symbols but for .stab symbols it |
1595 | carries the desc field in our extended 2.11BSD format. */ | |
1596 | in->desc = H_GET_16 (abfd, ext->e_desc); | |
e135f41b | 1597 | in->other = 0; |
dc810e39 | 1598 | in->type = H_GET_8 (abfd, ext->e_type); |
e135f41b NC |
1599 | in->symbol.udata.p = NULL; |
1600 | ||
1601 | if (! translate_from_native_sym_flags (abfd, in)) | |
b34976b6 | 1602 | return FALSE; |
e135f41b NC |
1603 | |
1604 | if (dynamic) | |
1605 | in->symbol.flags |= BSF_DYNAMIC; | |
1606 | } | |
1607 | ||
b34976b6 | 1608 | return TRUE; |
e135f41b NC |
1609 | } |
1610 | ||
1611 | /* We read the symbols into a buffer, which is discarded when this | |
1612 | function exits. We read the strings into a buffer large enough to | |
116c20d2 | 1613 | hold them all plus all the cached symbol entries. */ |
e135f41b | 1614 | |
b34976b6 | 1615 | bfd_boolean |
116c20d2 | 1616 | NAME (aout, slurp_symbol_table) (bfd *abfd) |
e135f41b NC |
1617 | { |
1618 | struct external_nlist *old_external_syms; | |
1619 | aout_symbol_type *cached; | |
dc810e39 | 1620 | bfd_size_type cached_size; |
e135f41b | 1621 | |
116c20d2 NC |
1622 | /* If there's no work to be done, don't do any. */ |
1623 | if (obj_aout_symbols (abfd) != NULL) | |
b34976b6 | 1624 | return TRUE; |
e135f41b NC |
1625 | |
1626 | old_external_syms = obj_aout_external_syms (abfd); | |
1627 | ||
1628 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 1629 | return FALSE; |
e135f41b | 1630 | |
dc810e39 AM |
1631 | cached_size = obj_aout_external_sym_count (abfd); |
1632 | cached_size *= sizeof (aout_symbol_type); | |
116c20d2 | 1633 | cached = bfd_zmalloc (cached_size); |
e135f41b | 1634 | if (cached == NULL && cached_size != 0) |
b34976b6 | 1635 | return FALSE; |
e135f41b NC |
1636 | |
1637 | /* Convert from external symbol information to internal. */ | |
116c20d2 | 1638 | if (! (NAME (aout, translate_symbol_table) |
e135f41b NC |
1639 | (abfd, cached, |
1640 | obj_aout_external_syms (abfd), | |
1641 | obj_aout_external_sym_count (abfd), | |
1642 | obj_aout_external_strings (abfd), | |
1643 | obj_aout_external_string_size (abfd), | |
b34976b6 | 1644 | FALSE))) |
e135f41b NC |
1645 | { |
1646 | free (cached); | |
b34976b6 | 1647 | return FALSE; |
e135f41b NC |
1648 | } |
1649 | ||
ed48ec2e | 1650 | abfd->symcount = obj_aout_external_sym_count (abfd); |
e135f41b NC |
1651 | |
1652 | obj_aout_symbols (abfd) = cached; | |
1653 | ||
1654 | /* It is very likely that anybody who calls this function will not | |
1655 | want the external symbol information, so if it was allocated | |
1656 | because of our call to aout_get_external_symbols, we free it up | |
1657 | right away to save space. */ | |
116c20d2 NC |
1658 | if (old_external_syms == NULL |
1659 | && obj_aout_external_syms (abfd) != NULL) | |
e135f41b NC |
1660 | { |
1661 | #ifdef USE_MMAP | |
1662 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
1663 | #else | |
1664 | free (obj_aout_external_syms (abfd)); | |
1665 | #endif | |
1666 | obj_aout_external_syms (abfd) = NULL; | |
1667 | } | |
1668 | ||
b34976b6 | 1669 | return TRUE; |
e135f41b NC |
1670 | } |
1671 | \f | |
1672 | /* We use a hash table when writing out symbols so that we only write | |
1673 | out a particular string once. This helps particularly when the | |
1674 | linker writes out stabs debugging entries, because each different | |
1675 | contributing object file tends to have many duplicate stabs | |
1676 | strings. | |
1677 | ||
1678 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it | |
1679 | if BFD_TRADITIONAL_FORMAT is set. */ | |
1680 | ||
e135f41b NC |
1681 | /* Get the index of a string in a strtab, adding it if it is not |
1682 | already present. */ | |
1683 | ||
31af1e68 | 1684 | static inline bfd_size_type |
116c20d2 NC |
1685 | add_to_stringtab (bfd *abfd, |
1686 | struct bfd_strtab_hash *tab, | |
1687 | const char *str, | |
1688 | bfd_boolean copy) | |
e135f41b | 1689 | { |
b34976b6 | 1690 | bfd_boolean hash; |
91d6fa6a | 1691 | bfd_size_type str_index; |
e135f41b NC |
1692 | |
1693 | /* An index of 0 always means the empty string. */ | |
1694 | if (str == 0 || *str == '\0') | |
1695 | return 0; | |
1696 | ||
1697 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx | |
1698 | doesn't understand a hashed string table. */ | |
b34976b6 | 1699 | hash = TRUE; |
e135f41b | 1700 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 1701 | hash = FALSE; |
e135f41b | 1702 | |
91d6fa6a | 1703 | str_index = _bfd_stringtab_add (tab, str, hash, copy); |
e135f41b | 1704 | |
91d6fa6a | 1705 | if (str_index != (bfd_size_type) -1) |
116c20d2 NC |
1706 | /* Add BYTES_IN_LONG to the return value to account for the |
1707 | space taken up by the string table size. */ | |
91d6fa6a | 1708 | str_index += BYTES_IN_LONG; |
e135f41b | 1709 | |
91d6fa6a | 1710 | return str_index; |
e135f41b NC |
1711 | } |
1712 | ||
1713 | /* Write out a strtab. ABFD is already at the right location in the | |
1714 | file. */ | |
1715 | ||
b34976b6 | 1716 | static bfd_boolean |
116c20d2 | 1717 | emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab) |
e135f41b NC |
1718 | { |
1719 | bfd_byte buffer[BYTES_IN_LONG]; | |
1720 | ||
1721 | /* The string table starts with the size. */ | |
dc810e39 | 1722 | H_PUT_32 (abfd, _bfd_stringtab_size (tab) + BYTES_IN_LONG, buffer); |
116c20d2 | 1723 | if (bfd_bwrite ((void *) buffer, (bfd_size_type) BYTES_IN_LONG, abfd) |
dc810e39 | 1724 | != BYTES_IN_LONG) |
b34976b6 | 1725 | return FALSE; |
e135f41b NC |
1726 | |
1727 | return _bfd_stringtab_emit (abfd, tab); | |
1728 | } | |
1729 | \f | |
b34976b6 | 1730 | bfd_boolean |
116c20d2 | 1731 | NAME (aout, write_syms) (bfd *abfd) |
e135f41b NC |
1732 | { |
1733 | unsigned int count ; | |
1734 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1735 | struct bfd_strtab_hash *strtab; | |
1736 | ||
1737 | strtab = _bfd_stringtab_init (); | |
1738 | if (strtab == NULL) | |
b34976b6 | 1739 | return FALSE; |
e135f41b NC |
1740 | |
1741 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1742 | { | |
1743 | asymbol *g = generic[count]; | |
1744 | bfd_size_type indx; | |
1745 | struct external_nlist nsp; | |
1746 | ||
b34976b6 | 1747 | indx = add_to_stringtab (abfd, strtab, g->name, FALSE); |
e135f41b NC |
1748 | if (indx == (bfd_size_type) -1) |
1749 | goto error_return; | |
dc810e39 | 1750 | PUT_WORD (abfd, indx, nsp.e_strx); |
e135f41b NC |
1751 | |
1752 | if (bfd_asymbol_flavour(g) == abfd->xvec->flavour) | |
a975c88e SC |
1753 | { |
1754 | H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc); | |
1755 | H_PUT_8 (abfd, 0, nsp.e_ovly); | |
1756 | H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type); | |
1757 | } | |
e135f41b | 1758 | else |
a975c88e SC |
1759 | { |
1760 | H_PUT_16 (abfd, 0, nsp.e_desc); | |
1761 | H_PUT_8 (abfd, 0, nsp.e_ovly); | |
1762 | H_PUT_8 (abfd, 0, nsp.e_type); | |
1763 | } | |
e135f41b NC |
1764 | |
1765 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) | |
1766 | goto error_return; | |
1767 | ||
116c20d2 | 1768 | if (bfd_bwrite ((void *)&nsp, (bfd_size_type) EXTERNAL_NLIST_SIZE, abfd) |
e135f41b NC |
1769 | != EXTERNAL_NLIST_SIZE) |
1770 | goto error_return; | |
1771 | ||
1772 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only | |
1773 | here, at the end. */ | |
1774 | g->KEEPIT = count; | |
1775 | } | |
1776 | ||
1777 | if (! emit_stringtab (abfd, strtab)) | |
1778 | goto error_return; | |
1779 | ||
1780 | _bfd_stringtab_free (strtab); | |
1781 | ||
b34976b6 | 1782 | return TRUE; |
e135f41b | 1783 | |
dc1e8a47 | 1784 | error_return: |
e135f41b | 1785 | _bfd_stringtab_free (strtab); |
b34976b6 | 1786 | return FALSE; |
e135f41b NC |
1787 | } |
1788 | ||
1789 | \f | |
1790 | long | |
116c20d2 | 1791 | NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location) |
e135f41b | 1792 | { |
116c20d2 NC |
1793 | unsigned int counter = 0; |
1794 | aout_symbol_type *symbase; | |
e135f41b | 1795 | |
116c20d2 NC |
1796 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
1797 | return -1; | |
e135f41b | 1798 | |
116c20d2 NC |
1799 | for (symbase = obj_aout_symbols (abfd); counter++ < bfd_get_symcount (abfd);) |
1800 | *(location++) = (asymbol *)(symbase++); | |
1801 | *location++ =0; | |
1802 | return bfd_get_symcount (abfd); | |
e135f41b NC |
1803 | } |
1804 | ||
1805 | \f | |
116c20d2 | 1806 | /* Output extended relocation information to a file in target byte order. */ |
e135f41b | 1807 | |
116c20d2 NC |
1808 | static void |
1809 | pdp11_aout_swap_reloc_out (bfd *abfd, arelent *g, bfd_byte *natptr) | |
e135f41b NC |
1810 | { |
1811 | int r_index; | |
1812 | int r_pcrel; | |
1813 | int reloc_entry; | |
1814 | int r_type; | |
1815 | asymbol *sym = *(g->sym_ptr_ptr); | |
1816 | asection *output_section = sym->section->output_section; | |
1817 | ||
1818 | if (g->addend != 0) | |
1819 | fprintf (stderr, "BFD: can't do this reloc addend stuff\n"); | |
1820 | ||
1821 | r_pcrel = g->howto->pc_relative; | |
1822 | ||
1823 | if (bfd_is_abs_section (output_section)) | |
1824 | r_type = RABS; | |
1825 | else if (output_section == obj_textsec (abfd)) | |
1826 | r_type = RTEXT; | |
1827 | else if (output_section == obj_datasec (abfd)) | |
1828 | r_type = RDATA; | |
1829 | else if (output_section == obj_bsssec (abfd)) | |
1830 | r_type = RBSS; | |
1831 | else if (bfd_is_und_section (output_section)) | |
1832 | r_type = REXT; | |
1833 | else if (bfd_is_com_section (output_section)) | |
1834 | r_type = REXT; | |
1835 | else | |
1836 | r_type = -1; | |
1837 | ||
1838 | BFD_ASSERT (r_type != -1); | |
1839 | ||
1840 | if (r_type == RABS) | |
1841 | r_index = 0; | |
1842 | else | |
1843 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
1844 | ||
e135f41b NC |
1845 | reloc_entry = r_index << 4 | r_type | r_pcrel; |
1846 | ||
9dadfa79 | 1847 | PUT_WORD (abfd, reloc_entry, natptr); |
e135f41b NC |
1848 | } |
1849 | ||
1850 | /* BFD deals internally with all things based from the section they're | |
1851 | in. so, something in 10 bytes into a text section with a base of | |
1852 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
1853 | ||
1854 | Aout keeps all it's symbols based from zero, so the symbol would | |
1855 | contain 60. This macro subs the base of each section from the value | |
1856 | to give the true offset from the section */ | |
1857 | ||
1858 | ||
07d6d2b8 AM |
1859 | #define MOVE_ADDRESS(ad) \ |
1860 | if (r_extern) \ | |
e135f41b NC |
1861 | { \ |
1862 | /* Undefined symbol. */ \ | |
1863 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
1864 | cache_ptr->addend = ad; \ | |
1865 | } \ | |
1866 | else \ | |
1867 | { \ | |
07d6d2b8 | 1868 | /* Defined, section relative. replace symbol with pointer to \ |
e135f41b NC |
1869 | symbol which points to section. */ \ |
1870 | switch (r_index) \ | |
1871 | { \ | |
1872 | case N_TEXT: \ | |
1873 | case N_TEXT | N_EXT: \ | |
1874 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ | |
1875 | cache_ptr->addend = ad - su->textsec->vma; \ | |
1876 | break; \ | |
1877 | case N_DATA: \ | |
1878 | case N_DATA | N_EXT: \ | |
1879 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ | |
1880 | cache_ptr->addend = ad - su->datasec->vma; \ | |
1881 | break; \ | |
1882 | case N_BSS: \ | |
1883 | case N_BSS | N_EXT: \ | |
1884 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ | |
1885 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
1886 | break; \ | |
1887 | default: \ | |
1888 | case N_ABS: \ | |
1889 | case N_ABS | N_EXT: \ | |
1890 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
1891 | cache_ptr->addend = ad; \ | |
1892 | break; \ | |
1893 | } \ | |
dc810e39 | 1894 | } |
e135f41b | 1895 | |
116c20d2 | 1896 | static void |
07d6d2b8 AM |
1897 | pdp11_aout_swap_reloc_in (bfd * abfd, |
1898 | bfd_byte * bytes, | |
1899 | arelent * cache_ptr, | |
1900 | bfd_size_type offset, | |
1901 | asymbol ** symbols, | |
1902 | bfd_size_type symcount) | |
e135f41b NC |
1903 | { |
1904 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
1905 | unsigned int r_index; | |
1906 | int reloc_entry; | |
1907 | int r_extern; | |
1908 | int r_pcrel; | |
1909 | ||
116c20d2 | 1910 | reloc_entry = GET_WORD (abfd, (void *) bytes); |
e135f41b NC |
1911 | |
1912 | r_pcrel = reloc_entry & RELFLG; | |
1913 | ||
1914 | cache_ptr->address = offset; | |
1915 | cache_ptr->howto = howto_table_pdp11 + (r_pcrel ? 1 : 0); | |
1916 | ||
1917 | if ((reloc_entry & RTYPE) == RABS) | |
1918 | r_index = N_ABS; | |
1919 | else | |
1920 | r_index = RINDEX (reloc_entry); | |
1921 | ||
1922 | /* r_extern reflects whether the symbol the reloc is against is | |
1923 | local or global. */ | |
1924 | r_extern = (reloc_entry & RTYPE) == REXT; | |
1925 | ||
31af1e68 | 1926 | if (r_extern && r_index >= symcount) |
e135f41b NC |
1927 | { |
1928 | /* We could arrange to return an error, but it might be useful | |
31af1e68 SC |
1929 | to see the file even if it is bad. FIXME: Of course this |
1930 | means that objdump -r *doesn't* see the actual reloc, and | |
1931 | objcopy silently writes a different reloc. */ | |
e135f41b NC |
1932 | r_extern = 0; |
1933 | r_index = N_ABS; | |
1934 | } | |
1935 | ||
1936 | MOVE_ADDRESS(0); | |
1937 | } | |
1938 | ||
1939 | /* Read and swap the relocs for a section. */ | |
1940 | ||
b34976b6 | 1941 | bfd_boolean |
116c20d2 | 1942 | NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) |
e135f41b | 1943 | { |
9dadfa79 | 1944 | bfd_byte *rptr; |
dc810e39 | 1945 | bfd_size_type count; |
e135f41b | 1946 | bfd_size_type reloc_size; |
116c20d2 | 1947 | void * relocs; |
e135f41b NC |
1948 | arelent *reloc_cache; |
1949 | size_t each_size; | |
1950 | unsigned int counter = 0; | |
1951 | arelent *cache_ptr; | |
1952 | ||
1953 | if (asect->relocation) | |
b34976b6 | 1954 | return TRUE; |
e135f41b NC |
1955 | |
1956 | if (asect->flags & SEC_CONSTRUCTOR) | |
b34976b6 | 1957 | return TRUE; |
e135f41b NC |
1958 | |
1959 | if (asect == obj_datasec (abfd)) | |
1960 | reloc_size = exec_hdr(abfd)->a_drsize; | |
1961 | else if (asect == obj_textsec (abfd)) | |
1962 | reloc_size = exec_hdr(abfd)->a_trsize; | |
1963 | else if (asect == obj_bsssec (abfd)) | |
1964 | reloc_size = 0; | |
1965 | else | |
1966 | { | |
1967 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 1968 | return FALSE; |
e135f41b NC |
1969 | } |
1970 | ||
1971 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) | |
b34976b6 | 1972 | return FALSE; |
2bb3687b | 1973 | relocs = _bfd_malloc_and_read (abfd, reloc_size, reloc_size); |
e135f41b | 1974 | if (relocs == NULL && reloc_size != 0) |
b34976b6 | 1975 | return FALSE; |
e135f41b | 1976 | |
2bb3687b | 1977 | each_size = obj_reloc_entry_size (abfd); |
e135f41b NC |
1978 | count = reloc_size / each_size; |
1979 | ||
116c20d2 | 1980 | /* Count the number of NON-ZERO relocs, this is the count we want. */ |
e135f41b NC |
1981 | { |
1982 | unsigned int real_count = 0; | |
1983 | ||
1984 | for (counter = 0; counter < count; counter++) | |
1985 | { | |
1986 | int x; | |
1987 | ||
973ffd63 | 1988 | x = GET_WORD (abfd, (char *) relocs + each_size * counter); |
e135f41b NC |
1989 | if (x != 0) |
1990 | real_count++; | |
1991 | } | |
1992 | ||
1993 | count = real_count; | |
1994 | } | |
1995 | ||
116c20d2 | 1996 | reloc_cache = bfd_zmalloc (count * sizeof (arelent)); |
e135f41b | 1997 | if (reloc_cache == NULL && count != 0) |
b34976b6 | 1998 | return FALSE; |
e135f41b NC |
1999 | |
2000 | cache_ptr = reloc_cache; | |
2001 | ||
9dadfa79 | 2002 | rptr = relocs; |
e135f41b NC |
2003 | for (counter = 0; |
2004 | counter < count; | |
9dadfa79 | 2005 | counter++, rptr += RELOC_SIZE, cache_ptr++) |
e135f41b | 2006 | { |
116c20d2 | 2007 | while (GET_WORD (abfd, (void *) rptr) == 0) |
e135f41b | 2008 | { |
9dadfa79 | 2009 | rptr += RELOC_SIZE; |
dc810e39 | 2010 | if ((char *) rptr >= (char *) relocs + reloc_size) |
e135f41b NC |
2011 | goto done; |
2012 | } | |
2013 | ||
2014 | pdp11_aout_swap_reloc_in (abfd, rptr, cache_ptr, | |
dc810e39 AM |
2015 | (bfd_size_type) ((char *) rptr - (char *) relocs), |
2016 | symbols, | |
2017 | (bfd_size_type) bfd_get_symcount (abfd)); | |
e135f41b NC |
2018 | } |
2019 | done: | |
2020 | /* Just in case, if rptr >= relocs + reloc_size should happen | |
116c20d2 | 2021 | too early. */ |
e135f41b NC |
2022 | BFD_ASSERT (counter == count); |
2023 | ||
2024 | free (relocs); | |
2025 | ||
2026 | asect->relocation = reloc_cache; | |
2027 | asect->reloc_count = cache_ptr - reloc_cache; | |
2028 | ||
b34976b6 | 2029 | return TRUE; |
e135f41b NC |
2030 | } |
2031 | ||
2032 | /* Write out a relocation section into an object file. */ | |
2033 | ||
b34976b6 | 2034 | bfd_boolean |
116c20d2 | 2035 | NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section) |
e135f41b NC |
2036 | { |
2037 | arelent **generic; | |
2038 | unsigned char *native; | |
2039 | unsigned int count = section->reloc_count; | |
dc810e39 | 2040 | bfd_size_type natsize; |
e135f41b | 2041 | |
eea6121a | 2042 | natsize = section->size; |
116c20d2 | 2043 | native = bfd_zalloc (abfd, natsize); |
e135f41b | 2044 | if (!native) |
b34976b6 | 2045 | return FALSE; |
e135f41b | 2046 | |
e135f41b NC |
2047 | generic = section->orelocation; |
2048 | if (generic != NULL) | |
2049 | { | |
2050 | while (count > 0) | |
2051 | { | |
9dadfa79 | 2052 | bfd_byte *r; |
e135f41b | 2053 | |
31af1e68 SC |
2054 | if ((*generic)->howto == NULL |
2055 | || (*generic)->sym_ptr_ptr == NULL) | |
2056 | { | |
2057 | bfd_set_error (bfd_error_invalid_operation); | |
2058 | _bfd_error_handler (_("%pB: attempt to write out " | |
2059 | "unknown reloc type"), abfd); | |
2060 | bfd_release (abfd, native); | |
2061 | return FALSE; | |
2062 | } | |
9dadfa79 | 2063 | r = native + (*generic)->address; |
e135f41b NC |
2064 | pdp11_aout_swap_reloc_out (abfd, *generic, r); |
2065 | count--; | |
2066 | generic++; | |
2067 | } | |
2068 | } | |
2069 | ||
116c20d2 | 2070 | if (bfd_bwrite ((void *) native, natsize, abfd) != natsize) |
e135f41b | 2071 | { |
dc810e39 | 2072 | bfd_release (abfd, native); |
b34976b6 | 2073 | return FALSE; |
e135f41b NC |
2074 | } |
2075 | ||
2076 | bfd_release (abfd, native); | |
b34976b6 | 2077 | return TRUE; |
e135f41b NC |
2078 | } |
2079 | ||
116c20d2 NC |
2080 | /* This is stupid. This function should be a boolean predicate. */ |
2081 | ||
e135f41b | 2082 | long |
116c20d2 NC |
2083 | NAME (aout, canonicalize_reloc) (bfd *abfd, |
2084 | sec_ptr section, | |
2085 | arelent **relptr, | |
2086 | asymbol **symbols) | |
e135f41b NC |
2087 | { |
2088 | arelent *tblptr = section->relocation; | |
2089 | unsigned int count; | |
2090 | ||
2091 | if (section == obj_bsssec (abfd)) | |
2092 | { | |
2093 | *relptr = NULL; | |
2094 | return 0; | |
2095 | } | |
2096 | ||
116c20d2 | 2097 | if (!(tblptr || NAME (aout, slurp_reloc_table)(abfd, section, symbols))) |
e135f41b NC |
2098 | return -1; |
2099 | ||
2100 | if (section->flags & SEC_CONSTRUCTOR) | |
2101 | { | |
2102 | arelent_chain *chain = section->constructor_chain; | |
2103 | ||
2104 | for (count = 0; count < section->reloc_count; count ++) | |
2105 | { | |
2106 | *relptr ++ = &chain->relent; | |
2107 | chain = chain->next; | |
2108 | } | |
2109 | } | |
2110 | else | |
2111 | { | |
2112 | tblptr = section->relocation; | |
2113 | ||
2114 | for (count = 0; count++ < section->reloc_count;) | |
2115 | *relptr++ = tblptr++; | |
2116 | } | |
2117 | ||
2118 | *relptr = 0; | |
2119 | ||
2120 | return section->reloc_count; | |
2121 | } | |
2122 | ||
2123 | long | |
116c20d2 | 2124 | NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect) |
e135f41b | 2125 | { |
7a6e0d89 AM |
2126 | bfd_size_type count; |
2127 | ||
e135f41b NC |
2128 | if (bfd_get_format (abfd) != bfd_object) |
2129 | { | |
2130 | bfd_set_error (bfd_error_invalid_operation); | |
2131 | return -1; | |
2132 | } | |
2133 | ||
dc810e39 | 2134 | if (asect->flags & SEC_CONSTRUCTOR) |
7a6e0d89 AM |
2135 | count = asect->reloc_count; |
2136 | else if (asect == obj_datasec (abfd)) | |
2137 | count = exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
2138 | else if (asect == obj_textsec (abfd)) | |
2139 | count = exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
2140 | else if (asect == obj_bsssec (abfd)) | |
2141 | count = 0; | |
2142 | else | |
2143 | { | |
2144 | bfd_set_error (bfd_error_invalid_operation); | |
2145 | return -1; | |
2146 | } | |
e135f41b | 2147 | |
7a6e0d89 AM |
2148 | if (count >= LONG_MAX / sizeof (arelent *)) |
2149 | { | |
2150 | bfd_set_error (bfd_error_file_too_big); | |
2151 | return -1; | |
2152 | } | |
2153 | return (count + 1) * sizeof (arelent *); | |
e135f41b NC |
2154 | } |
2155 | ||
2156 | \f | |
2157 | long | |
116c20d2 | 2158 | NAME (aout, get_symtab_upper_bound) (bfd *abfd) |
e135f41b | 2159 | { |
116c20d2 | 2160 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
e135f41b NC |
2161 | return -1; |
2162 | ||
2163 | return (bfd_get_symcount (abfd) + 1) * (sizeof (aout_symbol_type *)); | |
2164 | } | |
2165 | ||
2166 | alent * | |
116c20d2 NC |
2167 | NAME (aout, get_lineno) (bfd * abfd ATTRIBUTE_UNUSED, |
2168 | asymbol * symbol ATTRIBUTE_UNUSED) | |
e135f41b | 2169 | { |
116c20d2 | 2170 | return NULL; |
e135f41b NC |
2171 | } |
2172 | ||
2173 | void | |
116c20d2 NC |
2174 | NAME (aout, get_symbol_info) (bfd * abfd ATTRIBUTE_UNUSED, |
2175 | asymbol *symbol, | |
2176 | symbol_info *ret) | |
e135f41b NC |
2177 | { |
2178 | bfd_symbol_info (symbol, ret); | |
2179 | ||
2180 | if (ret->type == '?') | |
2181 | { | |
2182 | int type_code = aout_symbol(symbol)->type & 0xff; | |
2183 | const char *stab_name = bfd_get_stab_name (type_code); | |
2184 | static char buf[10]; | |
2185 | ||
2186 | if (stab_name == NULL) | |
2187 | { | |
2188 | sprintf(buf, "(%d)", type_code); | |
2189 | stab_name = buf; | |
2190 | } | |
2191 | ret->type = '-'; | |
116c20d2 NC |
2192 | ret->stab_type = type_code; |
2193 | ret->stab_other = (unsigned) (aout_symbol(symbol)->other & 0xff); | |
2194 | ret->stab_desc = (unsigned) (aout_symbol(symbol)->desc & 0xffff); | |
2195 | ret->stab_name = stab_name; | |
e135f41b NC |
2196 | } |
2197 | } | |
2198 | ||
e135f41b | 2199 | void |
116c20d2 NC |
2200 | NAME (aout, print_symbol) (bfd * abfd, |
2201 | void * afile, | |
2202 | asymbol *symbol, | |
2203 | bfd_print_symbol_type how) | |
e135f41b | 2204 | { |
116c20d2 | 2205 | FILE *file = (FILE *) afile; |
e135f41b NC |
2206 | |
2207 | switch (how) | |
2208 | { | |
2209 | case bfd_print_symbol_name: | |
2210 | if (symbol->name) | |
2211 | fprintf(file,"%s", symbol->name); | |
2212 | break; | |
2213 | case bfd_print_symbol_more: | |
116c20d2 NC |
2214 | fprintf(file,"%4x %2x %2x", |
2215 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2216 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2217 | (unsigned) (aout_symbol (symbol)->type)); | |
e135f41b NC |
2218 | break; |
2219 | case bfd_print_symbol_all: | |
2220 | { | |
dc810e39 | 2221 | const char *section_name = symbol->section->name; |
e135f41b | 2222 | |
116c20d2 | 2223 | bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
e135f41b NC |
2224 | |
2225 | fprintf (file," %-5s %04x %02x %02x", | |
2226 | section_name, | |
116c20d2 NC |
2227 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), |
2228 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2229 | (unsigned) (aout_symbol (symbol)->type & 0xff)); | |
e135f41b NC |
2230 | if (symbol->name) |
2231 | fprintf(file," %s", symbol->name); | |
2232 | } | |
2233 | break; | |
2234 | } | |
2235 | } | |
2236 | ||
2237 | /* If we don't have to allocate more than 1MB to hold the generic | |
2238 | symbols, we use the generic minisymbol method: it's faster, since | |
2239 | it only translates the symbols once, not multiple times. */ | |
2240 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2241 | ||
2242 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2243 | symbols. The minisymbol_to_symbol function translates these into | |
2244 | BFD asymbol structures. */ | |
2245 | ||
2246 | long | |
116c20d2 NC |
2247 | NAME (aout, read_minisymbols) (bfd *abfd, |
2248 | bfd_boolean dynamic, | |
2249 | void * *minisymsp, | |
2250 | unsigned int *sizep) | |
e135f41b NC |
2251 | { |
2252 | if (dynamic) | |
116c20d2 NC |
2253 | /* We could handle the dynamic symbols here as well, but it's |
2254 | easier to hand them off. */ | |
2255 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
e135f41b NC |
2256 | |
2257 | if (! aout_get_external_symbols (abfd)) | |
2258 | return -1; | |
2259 | ||
2260 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2261 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2262 | ||
116c20d2 | 2263 | *minisymsp = (void *) obj_aout_external_syms (abfd); |
e135f41b NC |
2264 | |
2265 | /* By passing the external symbols back from this routine, we are | |
2266 | giving up control over the memory block. Clear | |
2267 | obj_aout_external_syms, so that we do not try to free it | |
2268 | ourselves. */ | |
2269 | obj_aout_external_syms (abfd) = NULL; | |
2270 | ||
2271 | *sizep = EXTERNAL_NLIST_SIZE; | |
2272 | return obj_aout_external_sym_count (abfd); | |
2273 | } | |
2274 | ||
2275 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2276 | unmodified a.out symbol. The SYM argument is a structure returned | |
2277 | by bfd_make_empty_symbol, which we fill in here. */ | |
2278 | ||
2279 | asymbol * | |
116c20d2 NC |
2280 | NAME (aout, minisymbol_to_symbol) (bfd *abfd, |
2281 | bfd_boolean dynamic, | |
2282 | const void * minisym, | |
2283 | asymbol *sym) | |
e135f41b NC |
2284 | { |
2285 | if (dynamic | |
2286 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2287 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2288 | ||
2289 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2290 | ||
2291 | /* We call translate_symbol_table to translate a single symbol. */ | |
116c20d2 | 2292 | if (! (NAME (aout, translate_symbol_table) |
e135f41b NC |
2293 | (abfd, |
2294 | (aout_symbol_type *) sym, | |
2295 | (struct external_nlist *) minisym, | |
2296 | (bfd_size_type) 1, | |
2297 | obj_aout_external_strings (abfd), | |
2298 | obj_aout_external_string_size (abfd), | |
b34976b6 | 2299 | FALSE))) |
e135f41b NC |
2300 | return NULL; |
2301 | ||
2302 | return sym; | |
2303 | } | |
2304 | ||
116c20d2 NC |
2305 | /* Provided a BFD, a section and an offset into the section, calculate |
2306 | and return the name of the source file and the line nearest to the | |
2307 | wanted location. */ | |
e135f41b | 2308 | |
b34976b6 | 2309 | bfd_boolean |
116c20d2 | 2310 | NAME (aout, find_nearest_line) (bfd *abfd, |
116c20d2 | 2311 | asymbol **symbols, |
fb167eb2 | 2312 | asection *section, |
116c20d2 NC |
2313 | bfd_vma offset, |
2314 | const char **filename_ptr, | |
2315 | const char **functionname_ptr, | |
fb167eb2 AM |
2316 | unsigned int *line_ptr, |
2317 | unsigned int *discriminator_ptr) | |
e135f41b | 2318 | { |
116c20d2 | 2319 | /* Run down the file looking for the filename, function and linenumber. */ |
e135f41b | 2320 | asymbol **p; |
dc810e39 AM |
2321 | const char *directory_name = NULL; |
2322 | const char *main_file_name = NULL; | |
2323 | const char *current_file_name = NULL; | |
116c20d2 | 2324 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ |
e135f41b NC |
2325 | bfd_vma low_line_vma = 0; |
2326 | bfd_vma low_func_vma = 0; | |
2327 | asymbol *func = 0; | |
2328 | size_t filelen, funclen; | |
2329 | char *buf; | |
2330 | ||
765cf5f6 | 2331 | *filename_ptr = bfd_get_filename (abfd); |
31af1e68 | 2332 | *functionname_ptr = NULL; |
e135f41b | 2333 | *line_ptr = 0; |
fb167eb2 AM |
2334 | if (discriminator_ptr) |
2335 | *discriminator_ptr = 0; | |
e135f41b | 2336 | |
116c20d2 | 2337 | if (symbols != NULL) |
e135f41b NC |
2338 | { |
2339 | for (p = symbols; *p; p++) | |
2340 | { | |
2341 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
2342 | next: | |
2343 | switch (q->type) | |
2344 | { | |
2345 | case N_TEXT: | |
2346 | /* If this looks like a file name symbol, and it comes after | |
2347 | the line number we have found so far, but before the | |
2348 | offset, then we have probably not found the right line | |
2349 | number. */ | |
2350 | if (q->symbol.value <= offset | |
2351 | && ((q->symbol.value > low_line_vma | |
2352 | && (line_file_name != NULL | |
2353 | || *line_ptr != 0)) | |
2354 | || (q->symbol.value > low_func_vma | |
2355 | && func != NULL))) | |
2356 | { | |
2357 | const char * symname; | |
2358 | ||
2359 | symname = q->symbol.name; | |
31af1e68 SC |
2360 | |
2361 | if (symname != NULL | |
2362 | && strlen (symname) > 2 | |
2363 | && strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
e135f41b NC |
2364 | { |
2365 | if (q->symbol.value > low_line_vma) | |
2366 | { | |
2367 | *line_ptr = 0; | |
2368 | line_file_name = NULL; | |
2369 | } | |
2370 | if (q->symbol.value > low_func_vma) | |
2371 | func = NULL; | |
2372 | } | |
2373 | } | |
2374 | break; | |
2375 | ||
2376 | case N_SO: | |
2377 | /* If this symbol is less than the offset, but greater than | |
2378 | the line number we have found so far, then we have not | |
2379 | found the right line number. */ | |
2380 | if (q->symbol.value <= offset) | |
2381 | { | |
2382 | if (q->symbol.value > low_line_vma) | |
2383 | { | |
2384 | *line_ptr = 0; | |
2385 | line_file_name = NULL; | |
2386 | } | |
2387 | if (q->symbol.value > low_func_vma) | |
2388 | func = NULL; | |
2389 | } | |
2390 | ||
2391 | main_file_name = current_file_name = q->symbol.name; | |
116c20d2 | 2392 | /* Look ahead to next symbol to check if that too is an N_SO. */ |
e135f41b NC |
2393 | p++; |
2394 | if (*p == NULL) | |
31af1e68 | 2395 | goto done; |
e135f41b | 2396 | q = (aout_symbol_type *)(*p); |
116c20d2 | 2397 | if (q->type != (int) N_SO) |
e135f41b NC |
2398 | goto next; |
2399 | ||
116c20d2 | 2400 | /* Found a second N_SO First is directory; second is filename. */ |
e135f41b NC |
2401 | directory_name = current_file_name; |
2402 | main_file_name = current_file_name = q->symbol.name; | |
2403 | if (obj_textsec(abfd) != section) | |
2404 | goto done; | |
2405 | break; | |
2406 | case N_SOL: | |
2407 | current_file_name = q->symbol.name; | |
2408 | break; | |
2409 | ||
2410 | case N_SLINE: | |
2411 | case N_DSLINE: | |
2412 | case N_BSLINE: | |
2413 | /* We'll keep this if it resolves nearer than the one we have | |
2414 | already. */ | |
2415 | if (q->symbol.value >= low_line_vma | |
2416 | && q->symbol.value <= offset) | |
2417 | { | |
2418 | *line_ptr = q->desc; | |
2419 | low_line_vma = q->symbol.value; | |
2420 | line_file_name = current_file_name; | |
2421 | } | |
2422 | break; | |
2423 | ||
2424 | case N_FUN: | |
2425 | { | |
116c20d2 | 2426 | /* We'll keep this if it is nearer than the one we have already. */ |
e135f41b NC |
2427 | if (q->symbol.value >= low_func_vma && |
2428 | q->symbol.value <= offset) | |
2429 | { | |
2430 | low_func_vma = q->symbol.value; | |
116c20d2 | 2431 | func = (asymbol *) q; |
e135f41b NC |
2432 | } |
2433 | else if (q->symbol.value > offset) | |
2434 | goto done; | |
2435 | } | |
2436 | break; | |
2437 | } | |
2438 | } | |
2439 | } | |
2440 | ||
2441 | done: | |
2442 | if (*line_ptr != 0) | |
2443 | main_file_name = line_file_name; | |
2444 | ||
2445 | if (main_file_name == NULL | |
2446 | || main_file_name[0] == '/' | |
2447 | || directory_name == NULL) | |
2448 | filelen = 0; | |
2449 | else | |
2450 | filelen = strlen (directory_name) + strlen (main_file_name); | |
2451 | if (func == NULL) | |
2452 | funclen = 0; | |
2453 | else | |
2454 | funclen = strlen (bfd_asymbol_name (func)); | |
2455 | ||
c9594989 | 2456 | free (adata (abfd).line_buf); |
e135f41b NC |
2457 | if (filelen + funclen == 0) |
2458 | adata (abfd).line_buf = buf = NULL; | |
2459 | else | |
2460 | { | |
116c20d2 | 2461 | buf = bfd_malloc ((bfd_size_type) filelen + funclen + 3); |
e135f41b NC |
2462 | adata (abfd).line_buf = buf; |
2463 | if (buf == NULL) | |
b34976b6 | 2464 | return FALSE; |
e135f41b NC |
2465 | } |
2466 | ||
2467 | if (main_file_name != NULL) | |
2468 | { | |
2469 | if (main_file_name[0] == '/' || directory_name == NULL) | |
2470 | *filename_ptr = main_file_name; | |
2471 | else | |
2472 | { | |
31af1e68 SC |
2473 | if (buf == NULL) |
2474 | /* PR binutils/20891: In a corrupt input file both | |
2475 | main_file_name and directory_name can be empty... */ | |
2476 | * filename_ptr = NULL; | |
2477 | else | |
2478 | { | |
2479 | snprintf (buf, filelen + 1, "%s%s", directory_name, | |
2480 | main_file_name); | |
2481 | *filename_ptr = buf; | |
2482 | buf += filelen + 1; | |
2483 | } | |
e135f41b NC |
2484 | } |
2485 | } | |
2486 | ||
2487 | if (func) | |
2488 | { | |
2489 | const char *function = func->name; | |
dc810e39 | 2490 | char *colon; |
e135f41b | 2491 | |
31af1e68 SC |
2492 | if (buf == NULL) |
2493 | { | |
2494 | /* PR binutils/20892: In a corrupt input file func can be empty. */ | |
2495 | * functionname_ptr = NULL; | |
2496 | return TRUE; | |
2497 | } | |
e135f41b NC |
2498 | /* The caller expects a symbol name. We actually have a |
2499 | function name, without the leading underscore. Put the | |
2500 | underscore back in, so that the caller gets a symbol name. */ | |
2501 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2502 | strcpy (buf, function); | |
2503 | else | |
2504 | { | |
2505 | buf[0] = bfd_get_symbol_leading_char (abfd); | |
2506 | strcpy (buf + 1, function); | |
2507 | } | |
2508 | ||
2509 | /* Have to remove : stuff. */ | |
dc810e39 AM |
2510 | colon = strchr (buf, ':'); |
2511 | if (colon != NULL) | |
2512 | *colon = '\0'; | |
e135f41b NC |
2513 | *functionname_ptr = buf; |
2514 | } | |
2515 | ||
b34976b6 | 2516 | return TRUE; |
e135f41b NC |
2517 | } |
2518 | ||
2519 | int | |
a6b96beb AM |
2520 | NAME (aout, sizeof_headers) (bfd *abfd, |
2521 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
e135f41b | 2522 | { |
116c20d2 | 2523 | return adata (abfd).exec_bytes_size; |
e135f41b NC |
2524 | } |
2525 | ||
2526 | /* Free all information we have cached for this BFD. We can always | |
2527 | read it again later if we need it. */ | |
2528 | ||
b34976b6 | 2529 | bfd_boolean |
116c20d2 | 2530 | NAME (aout, bfd_free_cached_info) (bfd *abfd) |
e135f41b NC |
2531 | { |
2532 | asection *o; | |
2533 | ||
2534 | if (bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 2535 | return TRUE; |
e135f41b | 2536 | |
c9594989 | 2537 | #define BFCI_FREE(x) do { free (x); x = NULL; } while (0) |
e135f41b | 2538 | BFCI_FREE (obj_aout_symbols (abfd)); |
116c20d2 | 2539 | |
e135f41b NC |
2540 | #ifdef USE_MMAP |
2541 | obj_aout_external_syms (abfd) = 0; | |
2542 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2543 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2544 | obj_aout_external_strings (abfd) = 0; | |
2545 | #else | |
2546 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2547 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2548 | #endif | |
116c20d2 | 2549 | for (o = abfd->sections; o != NULL; o = o->next) |
e135f41b NC |
2550 | BFCI_FREE (o->relocation); |
2551 | #undef BFCI_FREE | |
2552 | ||
b34976b6 | 2553 | return TRUE; |
e135f41b NC |
2554 | } |
2555 | \f | |
e135f41b NC |
2556 | /* Routine to create an entry in an a.out link hash table. */ |
2557 | ||
2558 | struct bfd_hash_entry * | |
116c20d2 NC |
2559 | NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry, |
2560 | struct bfd_hash_table *table, | |
2561 | const char *string) | |
e135f41b NC |
2562 | { |
2563 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2564 | ||
2565 | /* Allocate the structure if it has not already been allocated by a | |
2566 | subclass. */ | |
116c20d2 NC |
2567 | if (ret == NULL) |
2568 | ret = bfd_hash_allocate (table, sizeof (* ret)); | |
2569 | if (ret == NULL) | |
2570 | return NULL; | |
e135f41b NC |
2571 | |
2572 | /* Call the allocation method of the superclass. */ | |
116c20d2 NC |
2573 | ret = (struct aout_link_hash_entry *) |
2574 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string); | |
e135f41b NC |
2575 | if (ret) |
2576 | { | |
2577 | /* Set local fields. */ | |
b34976b6 | 2578 | ret->written = FALSE; |
e135f41b NC |
2579 | ret->indx = -1; |
2580 | } | |
2581 | ||
2582 | return (struct bfd_hash_entry *) ret; | |
2583 | } | |
2584 | ||
2585 | /* Initialize an a.out link hash table. */ | |
2586 | ||
b34976b6 | 2587 | bfd_boolean |
116c20d2 NC |
2588 | NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table, |
2589 | bfd *abfd, | |
2590 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
2591 | struct bfd_hash_table *, | |
66eb6687 AM |
2592 | const char *), |
2593 | unsigned int entsize) | |
e135f41b | 2594 | { |
66eb6687 | 2595 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
e135f41b NC |
2596 | } |
2597 | ||
2598 | /* Create an a.out link hash table. */ | |
2599 | ||
2600 | struct bfd_link_hash_table * | |
116c20d2 | 2601 | NAME (aout, link_hash_table_create) (bfd *abfd) |
e135f41b NC |
2602 | { |
2603 | struct aout_link_hash_table *ret; | |
986f0783 | 2604 | size_t amt = sizeof (struct aout_link_hash_table); |
e135f41b | 2605 | |
22cdc249 | 2606 | ret = bfd_malloc (amt); |
e135f41b | 2607 | if (ret == NULL) |
116c20d2 NC |
2608 | return NULL; |
2609 | if (! NAME (aout, link_hash_table_init) (ret, abfd, | |
66eb6687 AM |
2610 | NAME (aout, link_hash_newfunc), |
2611 | sizeof (struct aout_link_hash_entry))) | |
e135f41b NC |
2612 | { |
2613 | free (ret); | |
116c20d2 | 2614 | return NULL; |
e135f41b NC |
2615 | } |
2616 | return &ret->root; | |
2617 | } | |
2618 | ||
116c20d2 NC |
2619 | /* Free up the internal symbols read from an a.out file. */ |
2620 | ||
2621 | static bfd_boolean | |
2622 | aout_link_free_symbols (bfd *abfd) | |
2623 | { | |
2624 | if (obj_aout_external_syms (abfd) != NULL) | |
2625 | { | |
2626 | #ifdef USE_MMAP | |
2627 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2628 | #else | |
2629 | free ((void *) obj_aout_external_syms (abfd)); | |
2630 | #endif | |
2631 | obj_aout_external_syms (abfd) = NULL; | |
2632 | } | |
2633 | ||
2634 | if (obj_aout_external_strings (abfd) != NULL) | |
2635 | { | |
2636 | #ifdef USE_MMAP | |
2637 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2638 | #else | |
2639 | free ((void *) obj_aout_external_strings (abfd)); | |
2640 | #endif | |
2641 | obj_aout_external_strings (abfd) = NULL; | |
2642 | } | |
2643 | return TRUE; | |
2644 | } | |
2645 | ||
e135f41b NC |
2646 | /* Given an a.out BFD, add symbols to the global hash table as |
2647 | appropriate. */ | |
2648 | ||
b34976b6 | 2649 | bfd_boolean |
116c20d2 | 2650 | NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info) |
e135f41b NC |
2651 | { |
2652 | switch (bfd_get_format (abfd)) | |
2653 | { | |
2654 | case bfd_object: | |
2655 | return aout_link_add_object_symbols (abfd, info); | |
2656 | case bfd_archive: | |
2657 | return _bfd_generic_link_add_archive_symbols | |
2658 | (abfd, info, aout_link_check_archive_element); | |
2659 | default: | |
2660 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2661 | return FALSE; |
e135f41b NC |
2662 | } |
2663 | } | |
2664 | ||
2665 | /* Add symbols from an a.out object file. */ | |
2666 | ||
b34976b6 | 2667 | static bfd_boolean |
116c20d2 | 2668 | aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
e135f41b NC |
2669 | { |
2670 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 2671 | return FALSE; |
e135f41b | 2672 | if (! aout_link_add_symbols (abfd, info)) |
b34976b6 | 2673 | return FALSE; |
e135f41b NC |
2674 | if (! info->keep_memory) |
2675 | { | |
2676 | if (! aout_link_free_symbols (abfd)) | |
b34976b6 | 2677 | return FALSE; |
e135f41b | 2678 | } |
b34976b6 | 2679 | return TRUE; |
e135f41b NC |
2680 | } |
2681 | ||
e135f41b NC |
2682 | /* Look through the internal symbols to see if this object file should |
2683 | be included in the link. We should include this object file if it | |
2684 | defines any symbols which are currently undefined. If this object | |
2685 | file defines a common symbol, then we may adjust the size of the | |
2686 | known symbol but we do not include the object file in the link | |
2687 | (unless there is some other reason to include it). */ | |
2688 | ||
b34976b6 | 2689 | static bfd_boolean |
116c20d2 NC |
2690 | aout_link_check_ar_symbols (bfd *abfd, |
2691 | struct bfd_link_info *info, | |
5d3236ee DK |
2692 | bfd_boolean *pneeded, |
2693 | bfd **subsbfd) | |
e135f41b | 2694 | { |
116c20d2 | 2695 | struct external_nlist *p; |
e135f41b NC |
2696 | struct external_nlist *pend; |
2697 | char *strings; | |
2698 | ||
b34976b6 | 2699 | *pneeded = FALSE; |
e135f41b NC |
2700 | |
2701 | /* Look through all the symbols. */ | |
2702 | p = obj_aout_external_syms (abfd); | |
2703 | pend = p + obj_aout_external_sym_count (abfd); | |
2704 | strings = obj_aout_external_strings (abfd); | |
2705 | for (; p < pend; p++) | |
2706 | { | |
dc810e39 | 2707 | int type = H_GET_8 (abfd, p->e_type); |
a975c88e | 2708 | const char *name = strings + GET_WORD (abfd, p->e_strx); |
e135f41b NC |
2709 | struct bfd_link_hash_entry *h; |
2710 | ||
2711 | /* Ignore symbols that are not externally visible. This is an | |
2712 | optimization only, as we check the type more thoroughly | |
2713 | below. */ | |
2714 | if ((type & N_EXT) == 0 | |
a975c88e | 2715 | || is_stab(type, name) |
e135f41b NC |
2716 | || type == N_FN) |
2717 | continue; | |
2718 | ||
b34976b6 | 2719 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
e135f41b NC |
2720 | |
2721 | /* We are only interested in symbols that are currently | |
2722 | undefined or common. */ | |
116c20d2 | 2723 | if (h == NULL |
e135f41b NC |
2724 | || (h->type != bfd_link_hash_undefined |
2725 | && h->type != bfd_link_hash_common)) | |
2726 | continue; | |
2727 | ||
2728 | if (type == (N_TEXT | N_EXT) | |
2729 | || type == (N_DATA | N_EXT) | |
2730 | || type == (N_BSS | N_EXT) | |
2731 | || type == (N_ABS | N_EXT)) | |
2732 | { | |
2733 | /* This object file defines this symbol. We must link it | |
2734 | in. This is true regardless of whether the current | |
2735 | definition of the symbol is undefined or common. If the | |
2736 | current definition is common, we have a case in which we | |
2737 | have already seen an object file including | |
07d6d2b8 | 2738 | int a; |
e135f41b | 2739 | and this object file from the archive includes |
07d6d2b8 | 2740 | int a = 5; |
e135f41b NC |
2741 | In such a case we must include this object file. |
2742 | ||
2743 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
2744 | element if the symbol is defined in the .data section, | |
2745 | but not if it is defined in the .text section. That | |
2746 | seems a bit crazy to me, and I haven't implemented it. | |
2747 | However, it might be correct. */ | |
0e144ba7 AM |
2748 | if (!(*info->callbacks |
2749 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
b95a0a31 | 2750 | continue; |
b34976b6 AM |
2751 | *pneeded = TRUE; |
2752 | return TRUE; | |
e135f41b NC |
2753 | } |
2754 | ||
2755 | if (type == (N_UNDF | N_EXT)) | |
2756 | { | |
2757 | bfd_vma value; | |
2758 | ||
2759 | value = GET_WORD (abfd, p->e_value); | |
2760 | if (value != 0) | |
2761 | { | |
2762 | /* This symbol is common in the object from the archive | |
2763 | file. */ | |
2764 | if (h->type == bfd_link_hash_undefined) | |
2765 | { | |
2766 | bfd *symbfd; | |
2767 | unsigned int power; | |
2768 | ||
2769 | symbfd = h->u.undef.abfd; | |
116c20d2 | 2770 | if (symbfd == NULL) |
e135f41b NC |
2771 | { |
2772 | /* This symbol was created as undefined from | |
2773 | outside BFD. We assume that we should link | |
2774 | in the object file. This is done for the -u | |
2775 | option in the linker. */ | |
0e144ba7 AM |
2776 | if (!(*info->callbacks |
2777 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
b34976b6 AM |
2778 | return FALSE; |
2779 | *pneeded = TRUE; | |
2780 | return TRUE; | |
e135f41b NC |
2781 | } |
2782 | /* Turn the current link symbol into a common | |
2783 | symbol. It is already on the undefs list. */ | |
2784 | h->type = bfd_link_hash_common; | |
116c20d2 NC |
2785 | h->u.c.p = bfd_hash_allocate (&info->hash->table, |
2786 | sizeof (struct bfd_link_hash_common_entry)); | |
e135f41b | 2787 | if (h->u.c.p == NULL) |
b34976b6 | 2788 | return FALSE; |
e135f41b NC |
2789 | |
2790 | h->u.c.size = value; | |
2791 | ||
2792 | /* FIXME: This isn't quite right. The maximum | |
2793 | alignment of a common symbol should be set by the | |
2794 | architecture of the output file, not of the input | |
2795 | file. */ | |
2796 | power = bfd_log2 (value); | |
2797 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
2798 | power = bfd_get_arch_info (abfd)->section_align_power; | |
2799 | h->u.c.p->alignment_power = power; | |
2800 | ||
2801 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
2802 | "COMMON"); | |
2803 | } | |
2804 | else | |
2805 | { | |
2806 | /* Adjust the size of the common symbol if | |
2807 | necessary. */ | |
2808 | if (value > h->u.c.size) | |
2809 | h->u.c.size = value; | |
2810 | } | |
2811 | } | |
2812 | } | |
2813 | } | |
2814 | ||
2815 | /* We do not need this object file. */ | |
b34976b6 | 2816 | return TRUE; |
e135f41b NC |
2817 | } |
2818 | ||
116c20d2 NC |
2819 | /* Check a single archive element to see if we need to include it in |
2820 | the link. *PNEEDED is set according to whether this element is | |
2821 | needed in the link or not. This is called from | |
2822 | _bfd_generic_link_add_archive_symbols. */ | |
2823 | ||
2824 | static bfd_boolean | |
2825 | aout_link_check_archive_element (bfd *abfd, | |
2826 | struct bfd_link_info *info, | |
13e570f8 AM |
2827 | struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED, |
2828 | const char *name ATTRIBUTE_UNUSED, | |
116c20d2 NC |
2829 | bfd_boolean *pneeded) |
2830 | { | |
0e144ba7 AM |
2831 | bfd *oldbfd; |
2832 | bfd_boolean needed; | |
5d3236ee | 2833 | |
0e144ba7 | 2834 | if (!aout_get_external_symbols (abfd)) |
116c20d2 NC |
2835 | return FALSE; |
2836 | ||
0e144ba7 AM |
2837 | oldbfd = abfd; |
2838 | if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd)) | |
116c20d2 NC |
2839 | return FALSE; |
2840 | ||
0e144ba7 AM |
2841 | needed = *pneeded; |
2842 | if (needed) | |
116c20d2 | 2843 | { |
5d3236ee DK |
2844 | /* Potentially, the add_archive_element hook may have set a |
2845 | substitute BFD for us. */ | |
0e144ba7 AM |
2846 | if (abfd != oldbfd) |
2847 | { | |
2848 | if (!info->keep_memory | |
2849 | && !aout_link_free_symbols (oldbfd)) | |
2850 | return FALSE; | |
2851 | if (!aout_get_external_symbols (abfd)) | |
2852 | return FALSE; | |
2853 | } | |
2854 | if (!aout_link_add_symbols (abfd, info)) | |
116c20d2 NC |
2855 | return FALSE; |
2856 | } | |
2857 | ||
0e144ba7 | 2858 | if (!info->keep_memory || !needed) |
116c20d2 | 2859 | { |
0e144ba7 | 2860 | if (!aout_link_free_symbols (abfd)) |
116c20d2 NC |
2861 | return FALSE; |
2862 | } | |
2863 | ||
2864 | return TRUE; | |
2865 | } | |
2866 | ||
e135f41b NC |
2867 | /* Add all symbols from an object file to the hash table. */ |
2868 | ||
b34976b6 | 2869 | static bfd_boolean |
116c20d2 | 2870 | aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
e135f41b | 2871 | { |
b34976b6 | 2872 | bfd_boolean (*add_one_symbol) |
116c20d2 NC |
2873 | (struct bfd_link_info *, bfd *, const char *, flagword, asection *, |
2874 | bfd_vma, const char *, bfd_boolean, bfd_boolean, | |
2875 | struct bfd_link_hash_entry **); | |
e135f41b NC |
2876 | struct external_nlist *syms; |
2877 | bfd_size_type sym_count; | |
2878 | char *strings; | |
b34976b6 | 2879 | bfd_boolean copy; |
e135f41b | 2880 | struct aout_link_hash_entry **sym_hash; |
116c20d2 | 2881 | struct external_nlist *p; |
e135f41b NC |
2882 | struct external_nlist *pend; |
2883 | ||
2884 | syms = obj_aout_external_syms (abfd); | |
2885 | sym_count = obj_aout_external_sym_count (abfd); | |
2886 | strings = obj_aout_external_strings (abfd); | |
2887 | if (info->keep_memory) | |
b34976b6 | 2888 | copy = FALSE; |
e135f41b | 2889 | else |
b34976b6 | 2890 | copy = TRUE; |
e135f41b NC |
2891 | |
2892 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) | |
2893 | { | |
2894 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) | |
2895 | (abfd, info, &syms, &sym_count, &strings))) | |
b34976b6 | 2896 | return FALSE; |
e135f41b NC |
2897 | } |
2898 | ||
2899 | /* We keep a list of the linker hash table entries that correspond | |
2900 | to particular symbols. We could just look them up in the hash | |
2901 | table, but keeping the list is more efficient. Perhaps this | |
2902 | should be conditional on info->keep_memory. */ | |
116c20d2 NC |
2903 | sym_hash = bfd_alloc (abfd, |
2904 | sym_count * sizeof (struct aout_link_hash_entry *)); | |
e135f41b | 2905 | if (sym_hash == NULL && sym_count != 0) |
b34976b6 | 2906 | return FALSE; |
e135f41b NC |
2907 | obj_aout_sym_hashes (abfd) = sym_hash; |
2908 | ||
2909 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; | |
2910 | if (add_one_symbol == NULL) | |
2911 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
2912 | ||
2913 | p = syms; | |
2914 | pend = p + sym_count; | |
2915 | for (; p < pend; p++, sym_hash++) | |
2916 | { | |
2917 | int type; | |
2918 | const char *name; | |
2919 | bfd_vma value; | |
2920 | asection *section; | |
2921 | flagword flags; | |
2922 | const char *string; | |
2923 | ||
2924 | *sym_hash = NULL; | |
2925 | ||
dc810e39 | 2926 | type = H_GET_8 (abfd, p->e_type); |
e135f41b | 2927 | |
31af1e68 SC |
2928 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
2929 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) | |
2930 | return FALSE; | |
e135f41b | 2931 | name = strings + GET_WORD (abfd, p->e_strx); |
9c65eeac NC |
2932 | |
2933 | /* Ignore debugging symbols. */ | |
2934 | if (is_stab (type, name)) | |
2935 | continue; | |
2936 | ||
e135f41b NC |
2937 | value = GET_WORD (abfd, p->e_value); |
2938 | flags = BSF_GLOBAL; | |
2939 | string = NULL; | |
2940 | switch (type) | |
2941 | { | |
2942 | default: | |
a975c88e SC |
2943 | /* Shouldn't be any types not covered. */ |
2944 | BFD_ASSERT (0); | |
0c98115d | 2945 | continue; |
e135f41b NC |
2946 | |
2947 | case N_UNDF: | |
2948 | case N_ABS: | |
2949 | case N_TEXT: | |
2950 | case N_DATA: | |
2951 | case N_BSS: | |
2952 | case N_REG: | |
2953 | case N_FN: | |
2954 | /* Ignore symbols that are not externally visible. */ | |
2955 | continue; | |
2956 | ||
2957 | case N_UNDF | N_EXT: | |
2958 | if (value == 0) | |
2959 | { | |
2960 | section = bfd_und_section_ptr; | |
2961 | flags = 0; | |
2962 | } | |
2963 | else | |
2964 | section = bfd_com_section_ptr; | |
2965 | break; | |
2966 | case N_ABS | N_EXT: | |
2967 | section = bfd_abs_section_ptr; | |
2968 | break; | |
2969 | case N_TEXT | N_EXT: | |
2970 | section = obj_textsec (abfd); | |
fd361982 | 2971 | value -= bfd_section_vma (section); |
e135f41b NC |
2972 | break; |
2973 | case N_DATA | N_EXT: | |
2974 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
2975 | translate_from_native_sym_flags. */ | |
2976 | section = obj_datasec (abfd); | |
fd361982 | 2977 | value -= bfd_section_vma (section); |
e135f41b NC |
2978 | break; |
2979 | case N_BSS | N_EXT: | |
2980 | section = obj_bsssec (abfd); | |
fd361982 | 2981 | value -= bfd_section_vma (section); |
e135f41b NC |
2982 | break; |
2983 | } | |
2984 | ||
2985 | if (! ((*add_one_symbol) | |
b34976b6 | 2986 | (info, abfd, name, flags, section, value, string, copy, FALSE, |
e135f41b | 2987 | (struct bfd_link_hash_entry **) sym_hash))) |
b34976b6 | 2988 | return FALSE; |
e135f41b NC |
2989 | |
2990 | /* Restrict the maximum alignment of a common symbol based on | |
2991 | the architecture, since a.out has no way to represent | |
2992 | alignment requirements of a section in a .o file. FIXME: | |
2993 | This isn't quite right: it should use the architecture of the | |
2994 | output file, not the input files. */ | |
2995 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
2996 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
2997 | bfd_get_arch_info (abfd)->section_align_power)) | |
2998 | (*sym_hash)->root.u.c.p->alignment_power = | |
2999 | bfd_get_arch_info (abfd)->section_align_power; | |
3000 | ||
3001 | /* If this is a set symbol, and we are not building sets, then | |
3002 | it is possible for the hash entry to not have been set. In | |
3003 | such a case, treat the symbol as not globally defined. */ | |
3004 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3005 | { | |
3006 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3007 | *sym_hash = NULL; | |
3008 | } | |
3009 | } | |
3010 | ||
b34976b6 | 3011 | return TRUE; |
e135f41b NC |
3012 | } |
3013 | \f | |
116c20d2 | 3014 | /* Look up an entry in an the header file hash table. */ |
e135f41b NC |
3015 | |
3016 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
3017 | ((struct aout_link_includes_entry *) \ | |
3018 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
3019 | ||
e135f41b NC |
3020 | /* The function to create a new entry in the header file hash table. */ |
3021 | ||
3022 | static struct bfd_hash_entry * | |
116c20d2 NC |
3023 | aout_link_includes_newfunc (struct bfd_hash_entry *entry, |
3024 | struct bfd_hash_table *table, | |
3025 | const char *string) | |
e135f41b | 3026 | { |
116c20d2 | 3027 | struct aout_link_includes_entry * ret = |
e135f41b NC |
3028 | (struct aout_link_includes_entry *) entry; |
3029 | ||
3030 | /* Allocate the structure if it has not already been allocated by a | |
3031 | subclass. */ | |
116c20d2 NC |
3032 | if (ret == NULL) |
3033 | ret = bfd_hash_allocate (table, | |
3034 | sizeof (struct aout_link_includes_entry)); | |
3035 | if (ret == NULL) | |
3036 | return NULL; | |
e135f41b NC |
3037 | |
3038 | /* Call the allocation method of the superclass. */ | |
3039 | ret = ((struct aout_link_includes_entry *) | |
3040 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
3041 | if (ret) | |
116c20d2 NC |
3042 | /* Set local fields. */ |
3043 | ret->totals = NULL; | |
e135f41b NC |
3044 | |
3045 | return (struct bfd_hash_entry *) ret; | |
3046 | } | |
3047 | ||
31af1e68 SC |
3048 | /* Write out a symbol that was not associated with an a.out input |
3049 | object. */ | |
3050 | ||
116c20d2 | 3051 | static bfd_boolean |
7686d77d | 3052 | aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data) |
e135f41b | 3053 | { |
7686d77d | 3054 | struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh; |
57402f1e | 3055 | struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data; |
116c20d2 NC |
3056 | bfd *output_bfd; |
3057 | int type; | |
3058 | bfd_vma val; | |
3059 | struct external_nlist outsym; | |
3060 | bfd_size_type indx; | |
986f0783 | 3061 | size_t amt; |
e135f41b | 3062 | |
116c20d2 NC |
3063 | if (h->root.type == bfd_link_hash_warning) |
3064 | { | |
3065 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
3066 | if (h->root.type == bfd_link_hash_new) | |
3067 | return TRUE; | |
3068 | } | |
e135f41b | 3069 | |
57402f1e | 3070 | output_bfd = flaginfo->output_bfd; |
e135f41b | 3071 | |
116c20d2 | 3072 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) |
e135f41b | 3073 | { |
116c20d2 | 3074 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) |
57402f1e | 3075 | (output_bfd, flaginfo->info, h))) |
e135f41b | 3076 | { |
116c20d2 NC |
3077 | /* FIXME: No way to handle errors. */ |
3078 | abort (); | |
e135f41b | 3079 | } |
116c20d2 | 3080 | } |
e135f41b | 3081 | |
116c20d2 NC |
3082 | if (h->written) |
3083 | return TRUE; | |
e135f41b | 3084 | |
116c20d2 | 3085 | h->written = TRUE; |
e135f41b | 3086 | |
116c20d2 NC |
3087 | /* An indx of -2 means the symbol must be written. */ |
3088 | if (h->indx != -2 | |
57402f1e NC |
3089 | && (flaginfo->info->strip == strip_all |
3090 | || (flaginfo->info->strip == strip_some | |
3091 | && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string, | |
116c20d2 NC |
3092 | FALSE, FALSE) == NULL))) |
3093 | return TRUE; | |
e135f41b | 3094 | |
116c20d2 | 3095 | switch (h->root.type) |
e135f41b | 3096 | { |
116c20d2 NC |
3097 | default: |
3098 | abort (); | |
3099 | /* Avoid variable not initialized warnings. */ | |
3100 | return TRUE; | |
3101 | case bfd_link_hash_new: | |
3102 | /* This can happen for set symbols when sets are not being | |
07d6d2b8 | 3103 | built. */ |
116c20d2 NC |
3104 | return TRUE; |
3105 | case bfd_link_hash_undefined: | |
3106 | type = N_UNDF | N_EXT; | |
3107 | val = 0; | |
3108 | break; | |
3109 | case bfd_link_hash_defined: | |
3110 | case bfd_link_hash_defweak: | |
3111 | { | |
3112 | asection *sec; | |
3113 | ||
3114 | sec = h->root.u.def.section->output_section; | |
3115 | BFD_ASSERT (bfd_is_abs_section (sec) | |
3116 | || sec->owner == output_bfd); | |
3117 | if (sec == obj_textsec (output_bfd)) | |
3118 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
3119 | else if (sec == obj_datasec (output_bfd)) | |
3120 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
3121 | else if (sec == obj_bsssec (output_bfd)) | |
3122 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
3123 | else | |
3124 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
3125 | type |= N_EXT; | |
3126 | val = (h->root.u.def.value | |
3127 | + sec->vma | |
3128 | + h->root.u.def.section->output_offset); | |
3129 | } | |
3130 | break; | |
3131 | case bfd_link_hash_common: | |
3132 | type = N_UNDF | N_EXT; | |
3133 | val = h->root.u.c.size; | |
3134 | break; | |
3135 | case bfd_link_hash_undefweak: | |
3136 | type = N_WEAKU; | |
3137 | val = 0; | |
1a0670f3 | 3138 | /* Fall through. */ |
116c20d2 NC |
3139 | case bfd_link_hash_indirect: |
3140 | case bfd_link_hash_warning: | |
3141 | /* FIXME: Ignore these for now. The circumstances under which | |
3142 | they should be written out are not clear to me. */ | |
3143 | return TRUE; | |
e135f41b NC |
3144 | } |
3145 | ||
116c20d2 | 3146 | H_PUT_8 (output_bfd, type, outsym.e_type); |
a975c88e | 3147 | H_PUT_8 (output_bfd, 0, outsym.e_ovly); |
57402f1e | 3148 | indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string, |
116c20d2 NC |
3149 | FALSE); |
3150 | if (indx == (bfd_size_type) -1) | |
3151 | /* FIXME: No way to handle errors. */ | |
3152 | abort (); | |
e135f41b | 3153 | |
a975c88e | 3154 | PUT_WORD (output_bfd, 0, outsym.e_desc); |
116c20d2 NC |
3155 | PUT_WORD (output_bfd, indx, outsym.e_strx); |
3156 | PUT_WORD (output_bfd, val, outsym.e_value); | |
e135f41b | 3157 | |
116c20d2 | 3158 | amt = EXTERNAL_NLIST_SIZE; |
57402f1e | 3159 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0 |
116c20d2 NC |
3160 | || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt) |
3161 | /* FIXME: No way to handle errors. */ | |
3162 | abort (); | |
e135f41b | 3163 | |
57402f1e | 3164 | flaginfo->symoff += amt; |
116c20d2 NC |
3165 | h->indx = obj_aout_external_sym_count (output_bfd); |
3166 | ++obj_aout_external_sym_count (output_bfd); | |
e135f41b | 3167 | |
116c20d2 NC |
3168 | return TRUE; |
3169 | } | |
e135f41b | 3170 | |
116c20d2 | 3171 | /* Handle a link order which is supposed to generate a reloc. */ |
e135f41b | 3172 | |
116c20d2 | 3173 | static bfd_boolean |
57402f1e | 3174 | aout_link_reloc_link_order (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3175 | asection *o, |
3176 | struct bfd_link_order *p) | |
3177 | { | |
3178 | struct bfd_link_order_reloc *pr; | |
3179 | int r_index; | |
3180 | int r_extern; | |
3181 | reloc_howto_type *howto; | |
3182 | file_ptr *reloff_ptr; | |
3183 | struct reloc_std_external srel; | |
3184 | void * rel_ptr; | |
3185 | bfd_size_type rel_size; | |
e135f41b | 3186 | |
116c20d2 | 3187 | pr = p->u.reloc.p; |
e135f41b | 3188 | |
116c20d2 | 3189 | if (p->type == bfd_section_reloc_link_order) |
e135f41b | 3190 | { |
116c20d2 NC |
3191 | r_extern = 0; |
3192 | if (bfd_is_abs_section (pr->u.section)) | |
3193 | r_index = N_ABS | N_EXT; | |
3194 | else | |
e135f41b | 3195 | { |
57402f1e | 3196 | BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd); |
116c20d2 | 3197 | r_index = pr->u.section->target_index; |
e135f41b NC |
3198 | } |
3199 | } | |
116c20d2 | 3200 | else |
e135f41b | 3201 | { |
116c20d2 | 3202 | struct aout_link_hash_entry *h; |
e135f41b | 3203 | |
116c20d2 NC |
3204 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); |
3205 | r_extern = 1; | |
3206 | h = ((struct aout_link_hash_entry *) | |
57402f1e | 3207 | bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info, |
116c20d2 NC |
3208 | pr->u.name, FALSE, FALSE, TRUE)); |
3209 | if (h != NULL | |
3210 | && h->indx >= 0) | |
3211 | r_index = h->indx; | |
3212 | else if (h != NULL) | |
3213 | { | |
3214 | /* We decided to strip this symbol, but it turns out that we | |
3215 | can't. Note that we lose the other and desc information | |
3216 | here. I don't think that will ever matter for a global | |
3217 | symbol. */ | |
3218 | h->indx = -2; | |
3219 | h->written = FALSE; | |
57402f1e | 3220 | if (!aout_link_write_other_symbol (&h->root.root, flaginfo)) |
116c20d2 NC |
3221 | return FALSE; |
3222 | r_index = h->indx; | |
e135f41b | 3223 | } |
116c20d2 | 3224 | else |
e135f41b | 3225 | { |
1a72702b AM |
3226 | (*flaginfo->info->callbacks->unattached_reloc) |
3227 | (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0); | |
116c20d2 | 3228 | r_index = 0; |
e135f41b NC |
3229 | } |
3230 | } | |
3231 | ||
57402f1e | 3232 | howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc); |
116c20d2 | 3233 | if (howto == 0) |
e135f41b | 3234 | { |
116c20d2 NC |
3235 | bfd_set_error (bfd_error_bad_value); |
3236 | return FALSE; | |
e135f41b NC |
3237 | } |
3238 | ||
57402f1e NC |
3239 | if (o == obj_textsec (flaginfo->output_bfd)) |
3240 | reloff_ptr = &flaginfo->treloff; | |
3241 | else if (o == obj_datasec (flaginfo->output_bfd)) | |
3242 | reloff_ptr = &flaginfo->dreloff; | |
116c20d2 NC |
3243 | else |
3244 | abort (); | |
e135f41b | 3245 | |
116c20d2 | 3246 | #ifdef MY_put_reloc |
57402f1e | 3247 | MY_put_reloc(flaginfo->output_bfd, r_extern, r_index, p->offset, howto, |
116c20d2 NC |
3248 | &srel); |
3249 | #else | |
3250 | { | |
3251 | int r_pcrel; | |
3252 | int r_baserel; | |
3253 | int r_jmptable; | |
3254 | int r_relative; | |
3255 | int r_length; | |
e135f41b | 3256 | |
116c20d2 | 3257 | fprintf (stderr, "TODO: line %d in bfd/pdp11.c\n", __LINE__); |
e135f41b | 3258 | |
116c20d2 NC |
3259 | r_pcrel = howto->pc_relative; |
3260 | r_baserel = (howto->type & 8) != 0; | |
3261 | r_jmptable = (howto->type & 16) != 0; | |
3262 | r_relative = (howto->type & 32) != 0; | |
3263 | r_length = howto->size; | |
e135f41b | 3264 | |
57402f1e NC |
3265 | PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address); |
3266 | if (bfd_header_big_endian (flaginfo->output_bfd)) | |
116c20d2 NC |
3267 | { |
3268 | srel.r_index[0] = r_index >> 16; | |
3269 | srel.r_index[1] = r_index >> 8; | |
3270 | srel.r_index[2] = r_index; | |
3271 | srel.r_type[0] = | |
3272 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
3273 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
3274 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
3275 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
3276 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
3277 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
3278 | } | |
3279 | else | |
3280 | { | |
3281 | srel.r_index[2] = r_index >> 16; | |
3282 | srel.r_index[1] = r_index >> 8; | |
3283 | srel.r_index[0] = r_index; | |
3284 | srel.r_type[0] = | |
3285 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
3286 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
3287 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
3288 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
3289 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
3290 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
3291 | } | |
3292 | } | |
3293 | #endif | |
3294 | rel_ptr = (void *) &srel; | |
e135f41b | 3295 | |
116c20d2 NC |
3296 | /* We have to write the addend into the object file, since |
3297 | standard a.out relocs are in place. It would be more | |
3298 | reliable if we had the current contents of the file here, | |
3299 | rather than assuming zeroes, but we can't read the file since | |
3300 | it was opened using bfd_openw. */ | |
3301 | if (pr->addend != 0) | |
e135f41b | 3302 | { |
116c20d2 NC |
3303 | bfd_size_type size; |
3304 | bfd_reloc_status_type r; | |
3305 | bfd_byte *buf; | |
3306 | bfd_boolean ok; | |
3307 | ||
3308 | size = bfd_get_reloc_size (howto); | |
3309 | buf = bfd_zmalloc (size); | |
6346d5ca | 3310 | if (buf == NULL && size != 0) |
116c20d2 | 3311 | return FALSE; |
57402f1e | 3312 | r = MY_relocate_contents (howto, flaginfo->output_bfd, |
116c20d2 NC |
3313 | pr->addend, buf); |
3314 | switch (r) | |
3315 | { | |
3316 | case bfd_reloc_ok: | |
3317 | break; | |
3318 | default: | |
3319 | case bfd_reloc_outofrange: | |
3320 | abort (); | |
3321 | case bfd_reloc_overflow: | |
1a72702b AM |
3322 | (*flaginfo->info->callbacks->reloc_overflow) |
3323 | (flaginfo->info, NULL, | |
3324 | (p->type == bfd_section_reloc_link_order | |
fd361982 | 3325 | ? bfd_section_name (pr->u.section) |
1a72702b AM |
3326 | : pr->u.name), |
3327 | howto->name, pr->addend, NULL, | |
3328 | (asection *) NULL, (bfd_vma) 0); | |
116c20d2 NC |
3329 | break; |
3330 | } | |
57402f1e | 3331 | ok = bfd_set_section_contents (flaginfo->output_bfd, o, |
116c20d2 NC |
3332 | (void *) buf, |
3333 | (file_ptr) p->offset, | |
3334 | size); | |
3335 | free (buf); | |
3336 | if (! ok) | |
3337 | return FALSE; | |
e135f41b NC |
3338 | } |
3339 | ||
57402f1e NC |
3340 | rel_size = obj_reloc_entry_size (flaginfo->output_bfd); |
3341 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
3342 | || bfd_bwrite (rel_ptr, rel_size, flaginfo->output_bfd) != rel_size) | |
b34976b6 | 3343 | return FALSE; |
e135f41b | 3344 | |
116c20d2 | 3345 | *reloff_ptr += rel_size; |
e135f41b | 3346 | |
116c20d2 NC |
3347 | /* Assert that the relocs have not run into the symbols, and that n |
3348 | the text relocs have not run into the data relocs. */ | |
57402f1e NC |
3349 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3350 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 3351 | || (*reloff_ptr |
57402f1e | 3352 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
e135f41b | 3353 | |
116c20d2 NC |
3354 | return TRUE; |
3355 | } | |
e135f41b | 3356 | |
116c20d2 NC |
3357 | /* Get the section corresponding to a reloc index. */ |
3358 | ||
3359 | static inline asection * | |
3360 | aout_reloc_type_to_section (bfd *abfd, int type) | |
3361 | { | |
3362 | switch (type) | |
e135f41b | 3363 | { |
116c20d2 NC |
3364 | case RTEXT: return obj_textsec (abfd); |
3365 | case RDATA: return obj_datasec (abfd); | |
3366 | case RBSS: return obj_bsssec (abfd); | |
3367 | case RABS: return bfd_abs_section_ptr; | |
3368 | case REXT: return bfd_und_section_ptr; | |
3369 | default: abort (); | |
e135f41b | 3370 | } |
e135f41b NC |
3371 | } |
3372 | ||
b34976b6 | 3373 | static bfd_boolean |
57402f1e | 3374 | pdp11_aout_link_input_section (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3375 | bfd *input_bfd, |
3376 | asection *input_section, | |
3377 | bfd_byte *relocs, | |
3378 | bfd_size_type rel_size, | |
3379 | bfd_byte *contents) | |
e135f41b | 3380 | { |
116c20d2 NC |
3381 | bfd_boolean (*check_dynamic_reloc) |
3382 | (struct bfd_link_info *, bfd *, asection *, | |
3383 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
3384 | bfd_vma *); | |
e135f41b | 3385 | bfd *output_bfd; |
116c20d2 NC |
3386 | bfd_boolean relocatable; |
3387 | struct external_nlist *syms; | |
e135f41b | 3388 | char *strings; |
116c20d2 | 3389 | struct aout_link_hash_entry **sym_hashes; |
e135f41b | 3390 | int *symbol_map; |
116c20d2 NC |
3391 | bfd_byte *rel; |
3392 | bfd_byte *rel_end; | |
e135f41b | 3393 | |
57402f1e | 3394 | output_bfd = flaginfo->output_bfd; |
116c20d2 | 3395 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
e135f41b | 3396 | |
116c20d2 NC |
3397 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_SIZE); |
3398 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
3399 | == output_bfd->xvec->header_byteorder); | |
e135f41b | 3400 | |
0e1862bb | 3401 | relocatable = bfd_link_relocatable (flaginfo->info); |
116c20d2 NC |
3402 | syms = obj_aout_external_syms (input_bfd); |
3403 | strings = obj_aout_external_strings (input_bfd); | |
3404 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 3405 | symbol_map = flaginfo->symbol_map; |
116c20d2 | 3406 | |
116c20d2 NC |
3407 | rel = relocs; |
3408 | rel_end = rel + rel_size; | |
3409 | for (; rel < rel_end; rel += RELOC_SIZE) | |
e135f41b | 3410 | { |
116c20d2 NC |
3411 | bfd_vma r_addr; |
3412 | int r_index; | |
3413 | int r_type; | |
3414 | int r_pcrel; | |
3415 | int r_extern; | |
3416 | reloc_howto_type *howto; | |
3417 | struct aout_link_hash_entry *h = NULL; | |
3418 | bfd_vma relocation; | |
3419 | bfd_reloc_status_type r; | |
3420 | int reloc_entry; | |
e135f41b | 3421 | |
116c20d2 NC |
3422 | reloc_entry = GET_WORD (input_bfd, (void *) rel); |
3423 | if (reloc_entry == 0) | |
e135f41b NC |
3424 | continue; |
3425 | ||
116c20d2 NC |
3426 | { |
3427 | unsigned int howto_idx; | |
e135f41b | 3428 | |
116c20d2 NC |
3429 | r_index = (reloc_entry & RIDXMASK) >> 4; |
3430 | r_type = reloc_entry & RTYPE; | |
3431 | r_pcrel = reloc_entry & RELFLG; | |
3432 | r_addr = (char *) rel - (char *) relocs; | |
e135f41b | 3433 | |
116c20d2 | 3434 | r_extern = (r_type == REXT); |
e135f41b | 3435 | |
116c20d2 | 3436 | howto_idx = r_pcrel; |
31af1e68 SC |
3437 | if (howto_idx < TABLE_SIZE (howto_table_pdp11)) |
3438 | howto = howto_table_pdp11 + howto_idx; | |
3439 | else | |
3440 | { | |
3441 | _bfd_error_handler (_("%pB: unsupported relocation type"), | |
3442 | input_bfd); | |
3443 | bfd_set_error (bfd_error_bad_value); | |
3444 | return FALSE; | |
3445 | } | |
116c20d2 NC |
3446 | } |
3447 | ||
3448 | if (relocatable) | |
e135f41b | 3449 | { |
116c20d2 NC |
3450 | /* We are generating a relocatable output file, and must |
3451 | modify the reloc accordingly. */ | |
3452 | if (r_extern) | |
3453 | { | |
3454 | /* If we know the symbol this relocation is against, | |
3455 | convert it into a relocation against a section. This | |
3456 | is what the native linker does. */ | |
3457 | h = sym_hashes[r_index]; | |
3458 | if (h != NULL | |
3459 | && (h->root.type == bfd_link_hash_defined | |
3460 | || h->root.type == bfd_link_hash_defweak)) | |
3461 | { | |
3462 | asection *output_section; | |
e135f41b | 3463 | |
116c20d2 NC |
3464 | /* Compute a new r_index. */ |
3465 | output_section = h->root.u.def.section->output_section; | |
e135f41b | 3466 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 | 3467 | r_type = N_TEXT; |
e135f41b | 3468 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 | 3469 | r_type = N_DATA; |
e135f41b | 3470 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 | 3471 | r_type = N_BSS; |
e135f41b | 3472 | else |
116c20d2 | 3473 | r_type = N_ABS; |
e135f41b | 3474 | |
116c20d2 NC |
3475 | /* Add the symbol value and the section VMA to the |
3476 | addend stored in the contents. */ | |
3477 | relocation = (h->root.u.def.value | |
3478 | + output_section->vma | |
3479 | + h->root.u.def.section->output_offset); | |
e135f41b | 3480 | } |
116c20d2 | 3481 | else |
e135f41b | 3482 | { |
116c20d2 NC |
3483 | /* We must change r_index according to the symbol |
3484 | map. */ | |
3485 | r_index = symbol_map[r_index]; | |
e135f41b | 3486 | |
116c20d2 | 3487 | if (r_index == -1) |
e135f41b | 3488 | { |
116c20d2 | 3489 | if (h != NULL) |
e135f41b | 3490 | { |
116c20d2 | 3491 | /* We decided to strip this symbol, but it |
07d6d2b8 AM |
3492 | turns out that we can't. Note that we |
3493 | lose the other and desc information here. | |
3494 | I don't think that will ever matter for a | |
3495 | global symbol. */ | |
116c20d2 | 3496 | if (h->indx < 0) |
e135f41b | 3497 | { |
116c20d2 NC |
3498 | h->indx = -2; |
3499 | h->written = FALSE; | |
7686d77d | 3500 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 3501 | flaginfo)) |
116c20d2 | 3502 | return FALSE; |
e135f41b | 3503 | } |
116c20d2 NC |
3504 | r_index = h->indx; |
3505 | } | |
3506 | else | |
3507 | { | |
3508 | const char *name; | |
3509 | ||
3510 | name = strings + GET_WORD (input_bfd, | |
3511 | syms[r_index].e_strx); | |
1a72702b AM |
3512 | (*flaginfo->info->callbacks->unattached_reloc) |
3513 | (flaginfo->info, name, input_bfd, input_section, | |
3514 | r_addr); | |
116c20d2 | 3515 | r_index = 0; |
e135f41b NC |
3516 | } |
3517 | } | |
116c20d2 NC |
3518 | |
3519 | relocation = 0; | |
e135f41b NC |
3520 | } |
3521 | ||
116c20d2 NC |
3522 | /* Write out the new r_index value. */ |
3523 | reloc_entry = GET_WORD (input_bfd, rel); | |
3524 | reloc_entry &= RIDXMASK; | |
3525 | reloc_entry |= r_index << 4; | |
3526 | PUT_WORD (input_bfd, reloc_entry, rel); | |
3527 | } | |
3528 | else | |
3529 | { | |
3530 | asection *section; | |
3531 | ||
3532 | /* This is a relocation against a section. We must | |
3533 | adjust by the amount that the section moved. */ | |
3534 | section = aout_reloc_type_to_section (input_bfd, r_type); | |
3535 | relocation = (section->output_section->vma | |
3536 | + section->output_offset | |
3537 | - section->vma); | |
3538 | } | |
3539 | ||
3540 | /* Change the address of the relocation. */ | |
3541 | fprintf (stderr, "TODO: change the address of the relocation\n"); | |
3542 | ||
3543 | /* Adjust a PC relative relocation by removing the reference | |
3544 | to the original address in the section and including the | |
3545 | reference to the new address. */ | |
3546 | if (r_pcrel) | |
3547 | relocation -= (input_section->output_section->vma | |
3548 | + input_section->output_offset | |
3549 | - input_section->vma); | |
3550 | ||
3551 | #ifdef MY_relocatable_reloc | |
3552 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
3553 | #endif | |
3554 | ||
3555 | if (relocation == 0) | |
3556 | r = bfd_reloc_ok; | |
3557 | else | |
3558 | r = MY_relocate_contents (howto, | |
3559 | input_bfd, relocation, | |
3560 | contents + r_addr); | |
3561 | } | |
3562 | else | |
3563 | { | |
3564 | bfd_boolean hundef; | |
3565 | ||
3566 | /* We are generating an executable, and must do a full | |
3567 | relocation. */ | |
3568 | hundef = FALSE; | |
3569 | if (r_extern) | |
3570 | { | |
3571 | h = sym_hashes[r_index]; | |
3572 | ||
3573 | if (h != NULL | |
3574 | && (h->root.type == bfd_link_hash_defined | |
3575 | || h->root.type == bfd_link_hash_defweak)) | |
e135f41b | 3576 | { |
116c20d2 NC |
3577 | relocation = (h->root.u.def.value |
3578 | + h->root.u.def.section->output_section->vma | |
3579 | + h->root.u.def.section->output_offset); | |
e135f41b | 3580 | } |
116c20d2 NC |
3581 | else if (h != NULL |
3582 | && h->root.type == bfd_link_hash_undefweak) | |
3583 | relocation = 0; | |
e135f41b NC |
3584 | else |
3585 | { | |
116c20d2 NC |
3586 | hundef = TRUE; |
3587 | relocation = 0; | |
3588 | } | |
3589 | } | |
3590 | else | |
3591 | { | |
3592 | asection *section; | |
e135f41b | 3593 | |
116c20d2 NC |
3594 | section = aout_reloc_type_to_section (input_bfd, r_type); |
3595 | relocation = (section->output_section->vma | |
3596 | + section->output_offset | |
3597 | - section->vma); | |
3598 | if (r_pcrel) | |
3599 | relocation += input_section->vma; | |
3600 | } | |
e135f41b | 3601 | |
116c20d2 NC |
3602 | if (check_dynamic_reloc != NULL) |
3603 | { | |
3604 | bfd_boolean skip; | |
e135f41b | 3605 | |
116c20d2 | 3606 | if (! ((*check_dynamic_reloc) |
57402f1e | 3607 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 NC |
3608 | (void *) rel, contents, &skip, &relocation))) |
3609 | return FALSE; | |
3610 | if (skip) | |
3611 | continue; | |
3612 | } | |
3613 | ||
3614 | /* Now warn if a global symbol is undefined. We could not | |
07d6d2b8 AM |
3615 | do this earlier, because check_dynamic_reloc might want |
3616 | to skip this reloc. */ | |
0e1862bb | 3617 | if (hundef && ! bfd_link_pic (flaginfo->info)) |
116c20d2 NC |
3618 | { |
3619 | const char *name; | |
3620 | ||
3621 | if (h != NULL) | |
3622 | name = h->root.root.string; | |
3623 | else | |
3624 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
3625 | (*flaginfo->info->callbacks->undefined_symbol) |
3626 | (flaginfo->info, name, input_bfd, input_section, | |
3627 | r_addr, TRUE); | |
e135f41b | 3628 | } |
116c20d2 NC |
3629 | |
3630 | r = MY_final_link_relocate (howto, | |
3631 | input_bfd, input_section, | |
3632 | contents, r_addr, relocation, | |
3633 | (bfd_vma) 0); | |
e135f41b NC |
3634 | } |
3635 | ||
116c20d2 | 3636 | if (r != bfd_reloc_ok) |
e135f41b | 3637 | { |
116c20d2 NC |
3638 | switch (r) |
3639 | { | |
3640 | default: | |
3641 | case bfd_reloc_outofrange: | |
3642 | abort (); | |
3643 | case bfd_reloc_overflow: | |
3644 | { | |
3645 | const char *name; | |
3646 | ||
3647 | if (h != NULL) | |
3648 | name = NULL; | |
3649 | else if (r_extern) | |
3650 | name = strings + GET_WORD (input_bfd, | |
3651 | syms[r_index].e_strx); | |
3652 | else | |
3653 | { | |
3654 | asection *s; | |
3655 | ||
3656 | s = aout_reloc_type_to_section (input_bfd, r_type); | |
fd361982 | 3657 | name = bfd_section_name (s); |
116c20d2 | 3658 | } |
1a72702b AM |
3659 | (*flaginfo->info->callbacks->reloc_overflow) |
3660 | (flaginfo->info, (h ? &h->root : NULL), name, howto->name, | |
3661 | (bfd_vma) 0, input_bfd, input_section, r_addr); | |
116c20d2 NC |
3662 | } |
3663 | break; | |
3664 | } | |
e135f41b | 3665 | } |
e135f41b NC |
3666 | } |
3667 | ||
116c20d2 NC |
3668 | return TRUE; |
3669 | } | |
3670 | ||
3671 | /* Link an a.out section into the output file. */ | |
3672 | ||
3673 | static bfd_boolean | |
57402f1e | 3674 | aout_link_input_section (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3675 | bfd *input_bfd, |
3676 | asection *input_section, | |
3677 | file_ptr *reloff_ptr, | |
3678 | bfd_size_type rel_size) | |
3679 | { | |
3680 | bfd_size_type input_size; | |
3681 | void * relocs; | |
3682 | ||
3683 | /* Get the section contents. */ | |
3684 | input_size = input_section->size; | |
3685 | if (! bfd_get_section_contents (input_bfd, input_section, | |
57402f1e | 3686 | (void *) flaginfo->contents, |
116c20d2 NC |
3687 | (file_ptr) 0, input_size)) |
3688 | return FALSE; | |
3689 | ||
3690 | /* Read in the relocs if we haven't already done it. */ | |
3691 | if (aout_section_data (input_section) != NULL | |
3692 | && aout_section_data (input_section)->relocs != NULL) | |
3693 | relocs = aout_section_data (input_section)->relocs; | |
3694 | else | |
e135f41b | 3695 | { |
57402f1e | 3696 | relocs = flaginfo->relocs; |
116c20d2 NC |
3697 | if (rel_size > 0) |
3698 | { | |
3699 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
3700 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) | |
3701 | return FALSE; | |
3702 | } | |
3703 | } | |
e135f41b | 3704 | |
116c20d2 | 3705 | /* Relocate the section contents. */ |
57402f1e | 3706 | if (! pdp11_aout_link_input_section (flaginfo, input_bfd, input_section, |
116c20d2 | 3707 | (bfd_byte *) relocs, |
57402f1e | 3708 | rel_size, flaginfo->contents)) |
116c20d2 NC |
3709 | return FALSE; |
3710 | ||
3711 | /* Write out the section contents. */ | |
57402f1e | 3712 | if (! bfd_set_section_contents (flaginfo->output_bfd, |
116c20d2 | 3713 | input_section->output_section, |
57402f1e | 3714 | (void *) flaginfo->contents, |
116c20d2 NC |
3715 | (file_ptr) input_section->output_offset, |
3716 | input_size)) | |
3717 | return FALSE; | |
3718 | ||
3719 | /* If we are producing relocatable output, the relocs were | |
3720 | modified, and we now write them out. */ | |
0e1862bb | 3721 | if (bfd_link_relocatable (flaginfo->info) && rel_size > 0) |
116c20d2 | 3722 | { |
57402f1e | 3723 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) |
116c20d2 | 3724 | return FALSE; |
57402f1e | 3725 | if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size) |
116c20d2 NC |
3726 | return FALSE; |
3727 | *reloff_ptr += rel_size; | |
3728 | ||
3729 | /* Assert that the relocs have not run into the symbols, and | |
3730 | that if these are the text relocs they have not run into the | |
3731 | data relocs. */ | |
57402f1e NC |
3732 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3733 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 3734 | || (*reloff_ptr |
57402f1e | 3735 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
3736 | } |
3737 | ||
3738 | return TRUE; | |
3739 | } | |
3740 | ||
3741 | /* Link an a.out input BFD into the output file. */ | |
3742 | ||
3743 | static bfd_boolean | |
57402f1e | 3744 | aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
116c20d2 | 3745 | { |
116c20d2 NC |
3746 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); |
3747 | ||
3748 | /* If this is a dynamic object, it may need special handling. */ | |
3749 | if ((input_bfd->flags & DYNAMIC) != 0 | |
3750 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
3751 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
57402f1e | 3752 | (flaginfo->info, input_bfd)); |
116c20d2 NC |
3753 | |
3754 | /* Get the symbols. We probably have them already, unless | |
57402f1e | 3755 | flaginfo->info->keep_memory is FALSE. */ |
116c20d2 NC |
3756 | if (! aout_get_external_symbols (input_bfd)) |
3757 | return FALSE; | |
3758 | ||
116c20d2 | 3759 | /* Write out the symbols and get a map of the new indices. The map |
57402f1e NC |
3760 | is placed into flaginfo->symbol_map. */ |
3761 | if (! aout_link_write_symbols (flaginfo, input_bfd)) | |
116c20d2 NC |
3762 | return FALSE; |
3763 | ||
3764 | /* Relocate and write out the sections. These functions use the | |
3765 | symbol map created by aout_link_write_symbols. The linker_mark | |
3766 | field will be set if these sections are to be included in the | |
3767 | link, which will normally be the case. */ | |
3768 | if (obj_textsec (input_bfd)->linker_mark) | |
3769 | { | |
57402f1e | 3770 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 3771 | obj_textsec (input_bfd), |
57402f1e | 3772 | &flaginfo->treloff, |
116c20d2 NC |
3773 | exec_hdr (input_bfd)->a_trsize)) |
3774 | return FALSE; | |
3775 | } | |
3776 | if (obj_datasec (input_bfd)->linker_mark) | |
3777 | { | |
57402f1e | 3778 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 3779 | obj_datasec (input_bfd), |
57402f1e | 3780 | &flaginfo->dreloff, |
116c20d2 | 3781 | exec_hdr (input_bfd)->a_drsize)) |
b34976b6 | 3782 | return FALSE; |
116c20d2 NC |
3783 | } |
3784 | ||
3785 | /* If we are not keeping memory, we don't need the symbols any | |
3786 | longer. We still need them if we are keeping memory, because the | |
3787 | strings in the hash table point into them. */ | |
57402f1e | 3788 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
3789 | { |
3790 | if (! aout_link_free_symbols (input_bfd)) | |
b34976b6 | 3791 | return FALSE; |
e135f41b NC |
3792 | } |
3793 | ||
b34976b6 | 3794 | return TRUE; |
e135f41b NC |
3795 | } |
3796 | ||
116c20d2 NC |
3797 | /* Do the final link step. This is called on the output BFD. The |
3798 | INFO structure should point to a list of BFDs linked through the | |
c72f2fb2 | 3799 | link.next field which can be used to find each BFD which takes part |
116c20d2 NC |
3800 | in the output. Also, each section in ABFD should point to a list |
3801 | of bfd_link_order structures which list all the input sections for | |
3802 | the output section. */ | |
e135f41b | 3803 | |
116c20d2 NC |
3804 | bfd_boolean |
3805 | NAME (aout, final_link) (bfd *abfd, | |
3806 | struct bfd_link_info *info, | |
3807 | void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *)) | |
e135f41b | 3808 | { |
116c20d2 NC |
3809 | struct aout_final_link_info aout_info; |
3810 | bfd_boolean includes_hash_initialized = FALSE; | |
3811 | bfd *sub; | |
3812 | bfd_size_type trsize, drsize; | |
3813 | bfd_size_type max_contents_size; | |
3814 | bfd_size_type max_relocs_size; | |
3815 | bfd_size_type max_sym_count; | |
116c20d2 NC |
3816 | struct bfd_link_order *p; |
3817 | asection *o; | |
3818 | bfd_boolean have_link_order_relocs; | |
e135f41b | 3819 | |
0e1862bb | 3820 | if (bfd_link_pic (info)) |
116c20d2 | 3821 | abfd->flags |= DYNAMIC; |
e92d460e | 3822 | |
fa1477dc | 3823 | separate_i_d = info->separate_code; |
116c20d2 NC |
3824 | aout_info.info = info; |
3825 | aout_info.output_bfd = abfd; | |
3826 | aout_info.contents = NULL; | |
3827 | aout_info.relocs = NULL; | |
3828 | aout_info.symbol_map = NULL; | |
3829 | aout_info.output_syms = NULL; | |
e135f41b | 3830 | |
66eb6687 AM |
3831 | if (!bfd_hash_table_init_n (&aout_info.includes.root, |
3832 | aout_link_includes_newfunc, | |
3833 | sizeof (struct aout_link_includes_entry), | |
3834 | 251)) | |
116c20d2 NC |
3835 | goto error_return; |
3836 | includes_hash_initialized = TRUE; | |
3837 | ||
3838 | /* Figure out the largest section size. Also, if generating | |
3839 | relocatable output, count the relocs. */ | |
3840 | trsize = 0; | |
3841 | drsize = 0; | |
3842 | max_contents_size = 0; | |
3843 | max_relocs_size = 0; | |
3844 | max_sym_count = 0; | |
c72f2fb2 | 3845 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
e135f41b | 3846 | { |
116c20d2 NC |
3847 | size_t sz; |
3848 | ||
0e1862bb | 3849 | if (bfd_link_relocatable (info)) |
e135f41b | 3850 | { |
116c20d2 NC |
3851 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3852 | { | |
3853 | trsize += exec_hdr (sub)->a_trsize; | |
3854 | drsize += exec_hdr (sub)->a_drsize; | |
3855 | } | |
3856 | else | |
3857 | { | |
3858 | /* FIXME: We need to identify the .text and .data sections | |
3859 | and call get_reloc_upper_bound and canonicalize_reloc to | |
3860 | work out the number of relocs needed, and then multiply | |
3861 | by the reloc size. */ | |
4eca0228 | 3862 | _bfd_error_handler |
695344c0 | 3863 | /* xgettext:c-format */ |
871b3ab2 | 3864 | (_("%pB: relocatable link from %s to %s not supported"), |
dae82561 | 3865 | abfd, sub->xvec->name, abfd->xvec->name); |
116c20d2 NC |
3866 | bfd_set_error (bfd_error_invalid_operation); |
3867 | goto error_return; | |
3868 | } | |
e135f41b | 3869 | } |
e135f41b | 3870 | |
116c20d2 NC |
3871 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3872 | { | |
3873 | sz = obj_textsec (sub)->size; | |
3874 | if (sz > max_contents_size) | |
3875 | max_contents_size = sz; | |
3876 | sz = obj_datasec (sub)->size; | |
3877 | if (sz > max_contents_size) | |
3878 | max_contents_size = sz; | |
e135f41b | 3879 | |
116c20d2 NC |
3880 | sz = exec_hdr (sub)->a_trsize; |
3881 | if (sz > max_relocs_size) | |
3882 | max_relocs_size = sz; | |
3883 | sz = exec_hdr (sub)->a_drsize; | |
3884 | if (sz > max_relocs_size) | |
3885 | max_relocs_size = sz; | |
e135f41b | 3886 | |
116c20d2 NC |
3887 | sz = obj_aout_external_sym_count (sub); |
3888 | if (sz > max_sym_count) | |
3889 | max_sym_count = sz; | |
3890 | } | |
e135f41b NC |
3891 | } |
3892 | ||
0e1862bb | 3893 | if (bfd_link_relocatable (info)) |
e135f41b | 3894 | { |
116c20d2 NC |
3895 | if (obj_textsec (abfd) != NULL) |
3896 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
8423293d | 3897 | ->map_head.link_order) |
116c20d2 NC |
3898 | * obj_reloc_entry_size (abfd)); |
3899 | if (obj_datasec (abfd) != NULL) | |
3900 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
8423293d | 3901 | ->map_head.link_order) |
116c20d2 | 3902 | * obj_reloc_entry_size (abfd)); |
e135f41b | 3903 | } |
e135f41b | 3904 | |
116c20d2 NC |
3905 | exec_hdr (abfd)->a_trsize = trsize; |
3906 | exec_hdr (abfd)->a_drsize = drsize; | |
3907 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); | |
3908 | ||
3909 | /* Adjust the section sizes and vmas according to the magic number. | |
3910 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
3911 | filepos for each section. */ | |
3a8c4a5b | 3912 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
116c20d2 NC |
3913 | goto error_return; |
3914 | ||
3915 | /* The relocation and symbol file positions differ among a.out | |
3916 | targets. We are passed a callback routine from the backend | |
3917 | specific code to handle this. | |
3918 | FIXME: At this point we do not know how much space the symbol | |
3919 | table will require. This will not work for any (nonstandard) | |
3920 | a.out target that needs to know the symbol table size before it | |
dc12032b | 3921 | can compute the relocation file positions. */ |
116c20d2 NC |
3922 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, |
3923 | &aout_info.symoff); | |
3924 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
3925 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
3926 | obj_sym_filepos (abfd) = aout_info.symoff; | |
3927 | ||
3928 | /* We keep a count of the symbols as we output them. */ | |
3929 | obj_aout_external_sym_count (abfd) = 0; | |
3930 | ||
3931 | /* We accumulate the string table as we write out the symbols. */ | |
3932 | aout_info.strtab = _bfd_stringtab_init (); | |
3933 | if (aout_info.strtab == NULL) | |
3934 | goto error_return; | |
3935 | ||
3936 | /* Allocate buffers to hold section contents and relocs. */ | |
3937 | aout_info.contents = bfd_malloc (max_contents_size); | |
3938 | aout_info.relocs = bfd_malloc (max_relocs_size); | |
3939 | aout_info.symbol_map = bfd_malloc (max_sym_count * sizeof (int *)); | |
3940 | aout_info.output_syms = bfd_malloc ((max_sym_count + 1) | |
3941 | * sizeof (struct external_nlist)); | |
3942 | if ((aout_info.contents == NULL && max_contents_size != 0) | |
3943 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
3944 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
3945 | || aout_info.output_syms == NULL) | |
3946 | goto error_return; | |
3947 | ||
3948 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
3949 | required by SunOS. Doing this here rather than in sunos.c is a | |
3950 | hack, but it's easier than exporting everything which would be | |
3951 | needed. */ | |
3952 | { | |
3953 | struct aout_link_hash_entry *h; | |
3954 | ||
3955 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
3956 | FALSE, FALSE, FALSE); | |
3957 | if (h != NULL) | |
7686d77d | 3958 | aout_link_write_other_symbol (&h->root.root, &aout_info); |
116c20d2 NC |
3959 | } |
3960 | ||
3961 | /* The most time efficient way to do the link would be to read all | |
3962 | the input object files into memory and then sort out the | |
3963 | information into the output file. Unfortunately, that will | |
3964 | probably use too much memory. Another method would be to step | |
3965 | through everything that composes the text section and write it | |
3966 | out, and then everything that composes the data section and write | |
3967 | it out, and then write out the relocs, and then write out the | |
3968 | symbols. Unfortunately, that requires reading stuff from each | |
3969 | input file several times, and we will not be able to keep all the | |
3970 | input files open simultaneously, and reopening them will be slow. | |
3971 | ||
3972 | What we do is basically process one input file at a time. We do | |
3973 | everything we need to do with an input file once--copy over the | |
3974 | section contents, handle the relocation information, and write | |
3975 | out the symbols--and then we throw away the information we read | |
3976 | from it. This approach requires a lot of lseeks of the output | |
3977 | file, which is unfortunate but still faster than reopening a lot | |
3978 | of files. | |
3979 | ||
3980 | We use the output_has_begun field of the input BFDs to see | |
3981 | whether we have already handled it. */ | |
c72f2fb2 | 3982 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 NC |
3983 | sub->output_has_begun = FALSE; |
3984 | ||
3985 | /* Mark all sections which are to be included in the link. This | |
3986 | will normally be every section. We need to do this so that we | |
3987 | can identify any sections which the linker has decided to not | |
3988 | include. */ | |
3989 | for (o = abfd->sections; o != NULL; o = o->next) | |
e135f41b | 3990 | { |
8423293d | 3991 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
116c20d2 NC |
3992 | if (p->type == bfd_indirect_link_order) |
3993 | p->u.indirect.section->linker_mark = TRUE; | |
e135f41b NC |
3994 | } |
3995 | ||
116c20d2 NC |
3996 | have_link_order_relocs = FALSE; |
3997 | for (o = abfd->sections; o != NULL; o = o->next) | |
3998 | { | |
8423293d | 3999 | for (p = o->map_head.link_order; |
116c20d2 NC |
4000 | p != NULL; |
4001 | p = p->next) | |
4002 | { | |
4003 | if (p->type == bfd_indirect_link_order | |
4004 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
4005 | == bfd_target_aout_flavour)) | |
4006 | { | |
4007 | bfd *input_bfd; | |
e135f41b | 4008 | |
116c20d2 NC |
4009 | input_bfd = p->u.indirect.section->owner; |
4010 | if (! input_bfd->output_has_begun) | |
4011 | { | |
4012 | if (! aout_link_input_bfd (&aout_info, input_bfd)) | |
4013 | goto error_return; | |
4014 | input_bfd->output_has_begun = TRUE; | |
4015 | } | |
4016 | } | |
4017 | else if (p->type == bfd_section_reloc_link_order | |
4018 | || p->type == bfd_symbol_reloc_link_order) | |
4019 | /* These are handled below. */ | |
4020 | have_link_order_relocs = TRUE; | |
4021 | else | |
4022 | { | |
4023 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
4024 | goto error_return; | |
4025 | } | |
4026 | } | |
4027 | } | |
e135f41b | 4028 | |
116c20d2 | 4029 | /* Write out any symbols that we have not already written out. */ |
7686d77d AM |
4030 | bfd_hash_traverse (&info->hash->table, |
4031 | aout_link_write_other_symbol, | |
4032 | &aout_info); | |
e135f41b | 4033 | |
116c20d2 NC |
4034 | /* Now handle any relocs we were asked to create by the linker. |
4035 | These did not come from any input file. We must do these after | |
4036 | we have written out all the symbols, so that we know the symbol | |
4037 | indices to use. */ | |
4038 | if (have_link_order_relocs) | |
e135f41b | 4039 | { |
116c20d2 | 4040 | for (o = abfd->sections; o != NULL; o = o->next) |
e135f41b | 4041 | { |
8423293d | 4042 | for (p = o->map_head.link_order; |
116c20d2 NC |
4043 | p != NULL; |
4044 | p = p->next) | |
4045 | { | |
4046 | if (p->type == bfd_section_reloc_link_order | |
4047 | || p->type == bfd_symbol_reloc_link_order) | |
4048 | { | |
4049 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
4050 | goto error_return; | |
4051 | } | |
4052 | } | |
e135f41b NC |
4053 | } |
4054 | } | |
4055 | ||
c9594989 AM |
4056 | free (aout_info.contents); |
4057 | aout_info.contents = NULL; | |
4058 | free (aout_info.relocs); | |
4059 | aout_info.relocs = NULL; | |
4060 | free (aout_info.symbol_map); | |
4061 | aout_info.symbol_map = NULL; | |
4062 | free (aout_info.output_syms); | |
4063 | aout_info.output_syms = NULL; | |
116c20d2 NC |
4064 | if (includes_hash_initialized) |
4065 | { | |
4066 | bfd_hash_table_free (&aout_info.includes.root); | |
4067 | includes_hash_initialized = FALSE; | |
4068 | } | |
e135f41b | 4069 | |
116c20d2 NC |
4070 | /* Finish up any dynamic linking we may be doing. */ |
4071 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
4072 | { | |
4073 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
4074 | goto error_return; | |
4075 | } | |
e135f41b | 4076 | |
116c20d2 NC |
4077 | /* Update the header information. */ |
4078 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
4079 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
4080 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
4081 | obj_textsec (abfd)->reloc_count = | |
4082 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
4083 | obj_datasec (abfd)->reloc_count = | |
4084 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
4085 | ||
4086 | /* Write out the string table, unless there are no symbols. */ | |
4087 | if (abfd->symcount > 0) | |
e135f41b | 4088 | { |
116c20d2 NC |
4089 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 |
4090 | || ! emit_stringtab (abfd, aout_info.strtab)) | |
4091 | goto error_return; | |
4092 | } | |
4093 | else if (obj_textsec (abfd)->reloc_count == 0 | |
4094 | && obj_datasec (abfd)->reloc_count == 0) | |
4095 | { | |
dda2980f AM |
4096 | /* The layout of a typical a.out file is header, text, data, |
4097 | relocs, symbols, string table. When there are no relocs, | |
4098 | symbols or string table, the last thing in the file is data | |
4099 | and a_data may be rounded up. However we may have a smaller | |
4100 | sized .data section and thus not written final padding. The | |
4101 | same thing can happen with text if there is no data. Write | |
4102 | final padding here to extend the file. */ | |
4103 | file_ptr pos = 0; | |
4104 | ||
4105 | if (exec_hdr (abfd)->a_data > obj_datasec (abfd)->size) | |
4106 | pos = obj_datasec (abfd)->filepos + exec_hdr (abfd)->a_data; | |
4107 | else if (obj_datasec (abfd)->size == 0 | |
4108 | && exec_hdr (abfd)->a_text > obj_textsec (abfd)->size) | |
4109 | pos = obj_textsec (abfd)->filepos + exec_hdr (abfd)->a_text; | |
4110 | if (pos != 0) | |
4111 | { | |
4112 | bfd_byte b = 0; | |
e135f41b | 4113 | |
dda2980f AM |
4114 | if (bfd_seek (abfd, pos - 1, SEEK_SET) != 0 |
4115 | || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1) | |
4116 | goto error_return; | |
4117 | } | |
e135f41b NC |
4118 | } |
4119 | ||
b34976b6 | 4120 | return TRUE; |
e135f41b | 4121 | |
116c20d2 | 4122 | error_return: |
c9594989 AM |
4123 | free (aout_info.contents); |
4124 | free (aout_info.relocs); | |
4125 | free (aout_info.symbol_map); | |
4126 | free (aout_info.output_syms); | |
116c20d2 NC |
4127 | if (includes_hash_initialized) |
4128 | bfd_hash_table_free (&aout_info.includes.root); | |
4129 | return FALSE; | |
e135f41b NC |
4130 | } |
4131 | ||
116c20d2 NC |
4132 | /* Adjust and write out the symbols for an a.out file. Set the new |
4133 | symbol indices into a symbol_map. */ | |
4134 | ||
b34976b6 | 4135 | static bfd_boolean |
57402f1e | 4136 | aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
e135f41b | 4137 | { |
e135f41b | 4138 | bfd *output_bfd; |
116c20d2 | 4139 | bfd_size_type sym_count; |
e135f41b | 4140 | char *strings; |
116c20d2 NC |
4141 | enum bfd_link_strip strip; |
4142 | enum bfd_link_discard discard; | |
4143 | struct external_nlist *outsym; | |
4144 | bfd_size_type strtab_index; | |
4145 | struct external_nlist *sym; | |
4146 | struct external_nlist *sym_end; | |
4147 | struct aout_link_hash_entry **sym_hash; | |
e135f41b | 4148 | int *symbol_map; |
116c20d2 NC |
4149 | bfd_boolean pass; |
4150 | bfd_boolean skip_next; | |
e135f41b | 4151 | |
57402f1e | 4152 | output_bfd = flaginfo->output_bfd; |
116c20d2 | 4153 | sym_count = obj_aout_external_sym_count (input_bfd); |
e135f41b | 4154 | strings = obj_aout_external_strings (input_bfd); |
57402f1e NC |
4155 | strip = flaginfo->info->strip; |
4156 | discard = flaginfo->info->discard; | |
4157 | outsym = flaginfo->output_syms; | |
e135f41b | 4158 | |
116c20d2 NC |
4159 | /* First write out a symbol for this object file, unless we are |
4160 | discarding such symbols. */ | |
4161 | if (strip != strip_all | |
4162 | && (strip != strip_some | |
765cf5f6 AM |
4163 | || bfd_hash_lookup (flaginfo->info->keep_hash, |
4164 | bfd_get_filename (input_bfd), | |
116c20d2 NC |
4165 | FALSE, FALSE) != NULL) |
4166 | && discard != discard_all) | |
4167 | { | |
4168 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); | |
a975c88e SC |
4169 | H_PUT_8 (output_bfd, 0, outsym->e_ovly); |
4170 | H_PUT_16 (output_bfd, 0, outsym->e_desc); | |
57402f1e | 4171 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
765cf5f6 | 4172 | bfd_get_filename (input_bfd), FALSE); |
116c20d2 NC |
4173 | if (strtab_index == (bfd_size_type) -1) |
4174 | return FALSE; | |
4175 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4176 | PUT_WORD (output_bfd, | |
fd361982 | 4177 | (bfd_section_vma (obj_textsec (input_bfd)->output_section) |
116c20d2 NC |
4178 | + obj_textsec (input_bfd)->output_offset), |
4179 | outsym->e_value); | |
4180 | ++obj_aout_external_sym_count (output_bfd); | |
4181 | ++outsym; | |
4182 | } | |
4183 | ||
4184 | pass = FALSE; | |
4185 | skip_next = FALSE; | |
4186 | sym = obj_aout_external_syms (input_bfd); | |
4187 | sym_end = sym + sym_count; | |
4188 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4189 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4190 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); |
4191 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) | |
e135f41b | 4192 | { |
116c20d2 NC |
4193 | const char *name; |
4194 | int type; | |
4195 | struct aout_link_hash_entry *h; | |
4196 | bfd_boolean skip; | |
4197 | asection *symsec; | |
4198 | bfd_vma val = 0; | |
4199 | bfd_boolean copy; | |
e135f41b | 4200 | |
116c20d2 | 4201 | /* We set *symbol_map to 0 above for all symbols. If it has |
07d6d2b8 AM |
4202 | already been set to -1 for this symbol, it means that we are |
4203 | discarding it because it appears in a duplicate header file. | |
4204 | See the N_BINCL code below. */ | |
116c20d2 | 4205 | if (*symbol_map == -1) |
e135f41b NC |
4206 | continue; |
4207 | ||
116c20d2 | 4208 | /* Initialize *symbol_map to -1, which means that the symbol was |
07d6d2b8 AM |
4209 | not copied into the output file. We will change it later if |
4210 | we do copy the symbol over. */ | |
116c20d2 | 4211 | *symbol_map = -1; |
e135f41b | 4212 | |
116c20d2 NC |
4213 | type = H_GET_8 (input_bfd, sym->e_type); |
4214 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
e135f41b | 4215 | |
116c20d2 | 4216 | h = NULL; |
e135f41b | 4217 | |
116c20d2 | 4218 | if (pass) |
e135f41b | 4219 | { |
116c20d2 NC |
4220 | /* Pass this symbol through. It is the target of an |
4221 | indirect or warning symbol. */ | |
4222 | val = GET_WORD (input_bfd, sym->e_value); | |
4223 | pass = FALSE; | |
4224 | } | |
4225 | else if (skip_next) | |
4226 | { | |
4227 | /* Skip this symbol, which is the target of an indirect | |
4228 | symbol that we have changed to no longer be an indirect | |
4229 | symbol. */ | |
4230 | skip_next = FALSE; | |
4231 | continue; | |
4232 | } | |
4233 | else | |
4234 | { | |
4235 | struct aout_link_hash_entry *hresolve; | |
e135f41b | 4236 | |
116c20d2 NC |
4237 | /* We have saved the hash table entry for this symbol, if |
4238 | there is one. Note that we could just look it up again | |
4239 | in the hash table, provided we first check that it is an | |
4240 | external symbol. */ | |
4241 | h = *sym_hash; | |
e135f41b | 4242 | |
116c20d2 | 4243 | /* Use the name from the hash table, in case the symbol was |
07d6d2b8 | 4244 | wrapped. */ |
116c20d2 NC |
4245 | if (h != NULL) |
4246 | name = h->root.root.string; | |
e135f41b | 4247 | |
116c20d2 NC |
4248 | /* If this is an indirect or warning symbol, then change |
4249 | hresolve to the base symbol. We also change *sym_hash so | |
4250 | that the relocation routines relocate against the real | |
4251 | symbol. */ | |
4252 | hresolve = h; | |
4253 | if (h != NULL | |
4254 | && (h->root.type == bfd_link_hash_indirect | |
4255 | || h->root.type == bfd_link_hash_warning)) | |
4256 | { | |
4257 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; | |
4258 | while (hresolve->root.type == bfd_link_hash_indirect | |
4259 | || hresolve->root.type == bfd_link_hash_warning) | |
4260 | hresolve = ((struct aout_link_hash_entry *) | |
4261 | hresolve->root.u.i.link); | |
4262 | *sym_hash = hresolve; | |
4263 | } | |
e135f41b | 4264 | |
116c20d2 NC |
4265 | /* If the symbol has already been written out, skip it. */ |
4266 | if (h != NULL | |
4267 | && h->root.type != bfd_link_hash_warning | |
4268 | && h->written) | |
4269 | { | |
4270 | if ((type & N_TYPE) == N_INDR | |
4271 | || type == N_WARNING) | |
4272 | skip_next = TRUE; | |
4273 | *symbol_map = h->indx; | |
4274 | continue; | |
4275 | } | |
e135f41b | 4276 | |
116c20d2 NC |
4277 | /* See if we are stripping this symbol. */ |
4278 | skip = FALSE; | |
4279 | switch (strip) | |
4280 | { | |
4281 | case strip_none: | |
4282 | break; | |
4283 | case strip_debugger: | |
a975c88e | 4284 | if (is_stab (type, name)) |
116c20d2 NC |
4285 | skip = TRUE; |
4286 | break; | |
4287 | case strip_some: | |
57402f1e | 4288 | if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE) |
116c20d2 NC |
4289 | == NULL) |
4290 | skip = TRUE; | |
4291 | break; | |
4292 | case strip_all: | |
4293 | skip = TRUE; | |
4294 | break; | |
e135f41b | 4295 | } |
116c20d2 | 4296 | if (skip) |
e135f41b | 4297 | { |
116c20d2 NC |
4298 | if (h != NULL) |
4299 | h->written = TRUE; | |
4300 | continue; | |
4301 | } | |
e135f41b | 4302 | |
116c20d2 | 4303 | /* Get the value of the symbol. */ |
a975c88e SC |
4304 | if (is_stab (type, name)) |
4305 | { | |
4306 | switch (type) | |
4307 | { | |
4308 | default: | |
4309 | symsec = bfd_abs_section_ptr; | |
4310 | break; | |
4311 | case N_SO: | |
4312 | case N_SOL: | |
4313 | case N_FUN: | |
4314 | case N_ENTRY: | |
4315 | case N_SLINE: | |
4316 | case N_FN: | |
4317 | symsec = obj_textsec (input_bfd); | |
4318 | break; | |
4319 | case N_STSYM: | |
4320 | case N_DSLINE: | |
4321 | symsec = obj_datasec (input_bfd); | |
4322 | break; | |
4323 | case N_LCSYM: | |
4324 | case N_BSLINE: | |
4325 | symsec = obj_bsssec (input_bfd); | |
4326 | break; | |
4327 | } | |
4328 | val = GET_WORD (input_bfd, sym->e_value); | |
4329 | } | |
4330 | else if ((type & N_TYPE) == N_TEXT | |
116c20d2 NC |
4331 | || type == N_WEAKT) |
4332 | symsec = obj_textsec (input_bfd); | |
4333 | else if ((type & N_TYPE) == N_DATA | |
4334 | || type == N_WEAKD) | |
4335 | symsec = obj_datasec (input_bfd); | |
4336 | else if ((type & N_TYPE) == N_BSS | |
4337 | || type == N_WEAKB) | |
4338 | symsec = obj_bsssec (input_bfd); | |
4339 | else if ((type & N_TYPE) == N_ABS | |
4340 | || type == N_WEAKA) | |
4341 | symsec = bfd_abs_section_ptr; | |
4342 | else if (((type & N_TYPE) == N_INDR | |
4343 | && (hresolve == NULL | |
4344 | || (hresolve->root.type != bfd_link_hash_defined | |
4345 | && hresolve->root.type != bfd_link_hash_defweak | |
4346 | && hresolve->root.type != bfd_link_hash_common))) | |
4347 | || type == N_WARNING) | |
4348 | { | |
4349 | /* Pass the next symbol through unchanged. The | |
4350 | condition above for indirect symbols is so that if | |
4351 | the indirect symbol was defined, we output it with | |
4352 | the correct definition so the debugger will | |
4353 | understand it. */ | |
4354 | pass = TRUE; | |
4355 | val = GET_WORD (input_bfd, sym->e_value); | |
4356 | symsec = NULL; | |
4357 | } | |
116c20d2 NC |
4358 | else |
4359 | { | |
4360 | /* If we get here with an indirect symbol, it means that | |
4361 | we are outputting it with a real definition. In such | |
4362 | a case we do not want to output the next symbol, | |
4363 | which is the target of the indirection. */ | |
4364 | if ((type & N_TYPE) == N_INDR) | |
4365 | skip_next = TRUE; | |
e135f41b | 4366 | |
116c20d2 | 4367 | symsec = NULL; |
e135f41b | 4368 | |
116c20d2 NC |
4369 | /* We need to get the value from the hash table. We use |
4370 | hresolve so that if we have defined an indirect | |
4371 | symbol we output the final definition. */ | |
4372 | if (h == NULL) | |
4373 | { | |
4374 | switch (type & N_TYPE) | |
4375 | { | |
4376 | case N_SETT: | |
4377 | symsec = obj_textsec (input_bfd); | |
4378 | break; | |
4379 | case N_SETD: | |
4380 | symsec = obj_datasec (input_bfd); | |
4381 | break; | |
4382 | case N_SETB: | |
4383 | symsec = obj_bsssec (input_bfd); | |
4384 | break; | |
4385 | case N_SETA: | |
4386 | symsec = bfd_abs_section_ptr; | |
4387 | break; | |
4388 | default: | |
4389 | val = 0; | |
4390 | break; | |
4391 | } | |
4392 | } | |
4393 | else if (hresolve->root.type == bfd_link_hash_defined | |
4394 | || hresolve->root.type == bfd_link_hash_defweak) | |
4395 | { | |
4396 | asection *input_section; | |
4397 | asection *output_section; | |
e135f41b | 4398 | |
116c20d2 NC |
4399 | /* This case usually means a common symbol which was |
4400 | turned into a defined symbol. */ | |
4401 | input_section = hresolve->root.u.def.section; | |
4402 | output_section = input_section->output_section; | |
4403 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
4404 | || output_section->owner == output_bfd); | |
4405 | val = (hresolve->root.u.def.value | |
fd361982 | 4406 | + bfd_section_vma (output_section) |
116c20d2 | 4407 | + input_section->output_offset); |
e135f41b | 4408 | |
116c20d2 NC |
4409 | /* Get the correct type based on the section. If |
4410 | this is a constructed set, force it to be | |
4411 | globally visible. */ | |
4412 | if (type == N_SETT | |
4413 | || type == N_SETD | |
4414 | || type == N_SETB | |
4415 | || type == N_SETA) | |
4416 | type |= N_EXT; | |
e135f41b | 4417 | |
116c20d2 | 4418 | type &=~ N_TYPE; |
e135f41b | 4419 | |
116c20d2 NC |
4420 | if (output_section == obj_textsec (output_bfd)) |
4421 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4422 | ? N_TEXT | |
4423 | : N_WEAKT); | |
4424 | else if (output_section == obj_datasec (output_bfd)) | |
4425 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4426 | ? N_DATA | |
4427 | : N_WEAKD); | |
4428 | else if (output_section == obj_bsssec (output_bfd)) | |
4429 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4430 | ? N_BSS | |
4431 | : N_WEAKB); | |
4432 | else | |
4433 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4434 | ? N_ABS | |
4435 | : N_WEAKA); | |
e135f41b | 4436 | } |
116c20d2 NC |
4437 | else if (hresolve->root.type == bfd_link_hash_common) |
4438 | val = hresolve->root.u.c.size; | |
4439 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
e135f41b | 4440 | { |
116c20d2 NC |
4441 | val = 0; |
4442 | type = N_WEAKU; | |
e135f41b | 4443 | } |
116c20d2 NC |
4444 | else |
4445 | val = 0; | |
e135f41b | 4446 | } |
116c20d2 NC |
4447 | if (symsec != NULL) |
4448 | val = (symsec->output_section->vma | |
4449 | + symsec->output_offset | |
4450 | + (GET_WORD (input_bfd, sym->e_value) | |
4451 | - symsec->vma)); | |
e135f41b | 4452 | |
116c20d2 NC |
4453 | /* If this is a global symbol set the written flag, and if |
4454 | it is a local symbol see if we should discard it. */ | |
4455 | if (h != NULL) | |
e135f41b | 4456 | { |
116c20d2 NC |
4457 | h->written = TRUE; |
4458 | h->indx = obj_aout_external_sym_count (output_bfd); | |
e135f41b | 4459 | } |
116c20d2 NC |
4460 | else if ((type & N_TYPE) != N_SETT |
4461 | && (type & N_TYPE) != N_SETD | |
4462 | && (type & N_TYPE) != N_SETB | |
4463 | && (type & N_TYPE) != N_SETA) | |
e135f41b | 4464 | { |
116c20d2 NC |
4465 | switch (discard) |
4466 | { | |
4467 | case discard_none: | |
4468 | case discard_sec_merge: | |
4469 | break; | |
4470 | case discard_l: | |
a975c88e | 4471 | if (!is_stab (type, name) |
116c20d2 NC |
4472 | && bfd_is_local_label_name (input_bfd, name)) |
4473 | skip = TRUE; | |
4474 | break; | |
4475 | case discard_all: | |
4476 | skip = TRUE; | |
4477 | break; | |
4478 | } | |
4479 | if (skip) | |
4480 | { | |
4481 | pass = FALSE; | |
4482 | continue; | |
4483 | } | |
e135f41b NC |
4484 | } |
4485 | ||
116c20d2 NC |
4486 | /* An N_BINCL symbol indicates the start of the stabs |
4487 | entries for a header file. We need to scan ahead to the | |
4488 | next N_EINCL symbol, ignoring nesting, adding up all the | |
4489 | characters in the symbol names, not including the file | |
4490 | numbers in types (the first number after an open | |
4491 | parenthesis). */ | |
4492 | if (type == N_BINCL) | |
e135f41b | 4493 | { |
116c20d2 NC |
4494 | struct external_nlist *incl_sym; |
4495 | int nest; | |
4496 | struct aout_link_includes_entry *incl_entry; | |
4497 | struct aout_link_includes_totals *t; | |
e135f41b | 4498 | |
116c20d2 NC |
4499 | val = 0; |
4500 | nest = 0; | |
4501 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
4502 | { | |
4503 | int incl_type; | |
e135f41b | 4504 | |
116c20d2 NC |
4505 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
4506 | if (incl_type == N_EINCL) | |
4507 | { | |
4508 | if (nest == 0) | |
4509 | break; | |
4510 | --nest; | |
4511 | } | |
4512 | else if (incl_type == N_BINCL) | |
4513 | ++nest; | |
4514 | else if (nest == 0) | |
4515 | { | |
4516 | const char *s; | |
e135f41b | 4517 | |
116c20d2 NC |
4518 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); |
4519 | for (; *s != '\0'; s++) | |
4520 | { | |
4521 | val += *s; | |
4522 | if (*s == '(') | |
4523 | { | |
4524 | /* Skip the file number. */ | |
4525 | ++s; | |
4526 | while (ISDIGIT (*s)) | |
4527 | ++s; | |
4528 | --s; | |
4529 | } | |
4530 | } | |
4531 | } | |
4532 | } | |
e135f41b | 4533 | |
116c20d2 | 4534 | /* If we have already included a header file with the |
07d6d2b8 AM |
4535 | same value, then replace this one with an N_EXCL |
4536 | symbol. */ | |
57402f1e NC |
4537 | copy = ! flaginfo->info->keep_memory; |
4538 | incl_entry = aout_link_includes_lookup (&flaginfo->includes, | |
116c20d2 NC |
4539 | name, TRUE, copy); |
4540 | if (incl_entry == NULL) | |
4541 | return FALSE; | |
4542 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
4543 | if (t->total == val) | |
4544 | break; | |
4545 | if (t == NULL) | |
4546 | { | |
4547 | /* This is the first time we have seen this header | |
07d6d2b8 | 4548 | file with this set of stabs strings. */ |
57402f1e | 4549 | t = bfd_hash_allocate (&flaginfo->includes.root, |
116c20d2 NC |
4550 | sizeof *t); |
4551 | if (t == NULL) | |
4552 | return FALSE; | |
4553 | t->total = val; | |
4554 | t->next = incl_entry->totals; | |
4555 | incl_entry->totals = t; | |
4556 | } | |
4557 | else | |
4558 | { | |
4559 | int *incl_map; | |
e135f41b | 4560 | |
116c20d2 | 4561 | /* This is a duplicate header file. We must change |
07d6d2b8 AM |
4562 | it to be an N_EXCL entry, and mark all the |
4563 | included symbols to prevent outputting them. */ | |
116c20d2 | 4564 | type = N_EXCL; |
e135f41b | 4565 | |
116c20d2 NC |
4566 | nest = 0; |
4567 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
4568 | incl_sym < sym_end; | |
4569 | incl_sym++, incl_map++) | |
4570 | { | |
4571 | int incl_type; | |
e135f41b | 4572 | |
116c20d2 NC |
4573 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
4574 | if (incl_type == N_EINCL) | |
4575 | { | |
4576 | if (nest == 0) | |
4577 | { | |
4578 | *incl_map = -1; | |
4579 | break; | |
4580 | } | |
4581 | --nest; | |
4582 | } | |
4583 | else if (incl_type == N_BINCL) | |
4584 | ++nest; | |
4585 | else if (nest == 0) | |
4586 | *incl_map = -1; | |
4587 | } | |
4588 | } | |
4589 | } | |
e135f41b | 4590 | } |
e135f41b | 4591 | |
116c20d2 NC |
4592 | /* Copy this symbol into the list of symbols we are going to |
4593 | write out. */ | |
4594 | H_PUT_8 (output_bfd, type, outsym->e_type); | |
a975c88e SC |
4595 | H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_ovly), outsym->e_ovly); |
4596 | H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc); | |
116c20d2 | 4597 | copy = FALSE; |
57402f1e | 4598 | if (! flaginfo->info->keep_memory) |
e135f41b | 4599 | { |
116c20d2 NC |
4600 | /* name points into a string table which we are going to |
4601 | free. If there is a hash table entry, use that string. | |
4602 | Otherwise, copy name into memory. */ | |
4603 | if (h != NULL) | |
4604 | name = h->root.root.string; | |
4605 | else | |
4606 | copy = TRUE; | |
e135f41b | 4607 | } |
57402f1e | 4608 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
4609 | name, copy); |
4610 | if (strtab_index == (bfd_size_type) -1) | |
4611 | return FALSE; | |
4612 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4613 | PUT_WORD (output_bfd, val, outsym->e_value); | |
4614 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
4615 | ++obj_aout_external_sym_count (output_bfd); | |
4616 | ++outsym; | |
e135f41b NC |
4617 | } |
4618 | ||
116c20d2 | 4619 | /* Write out the output symbols we have just constructed. */ |
57402f1e | 4620 | if (outsym > flaginfo->output_syms) |
e135f41b NC |
4621 | { |
4622 | bfd_size_type size; | |
e135f41b | 4623 | |
57402f1e | 4624 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0) |
b34976b6 | 4625 | return FALSE; |
57402f1e | 4626 | size = outsym - flaginfo->output_syms; |
116c20d2 | 4627 | size *= EXTERNAL_NLIST_SIZE; |
57402f1e | 4628 | if (bfd_bwrite ((void *) flaginfo->output_syms, size, output_bfd) != size) |
b34976b6 | 4629 | return FALSE; |
57402f1e | 4630 | flaginfo->symoff += size; |
e135f41b NC |
4631 | } |
4632 | ||
b34976b6 | 4633 | return TRUE; |
e135f41b | 4634 | } |
116c20d2 NC |
4635 | |
4636 | /* Write out a symbol that was not associated with an a.out input | |
4637 | object. */ | |
e135f41b | 4638 | |
edeb6e24 AM |
4639 | static bfd_vma |
4640 | bfd_getp32 (const void *p) | |
e135f41b | 4641 | { |
edeb6e24 AM |
4642 | const bfd_byte *addr = p; |
4643 | unsigned long v; | |
116c20d2 | 4644 | |
edeb6e24 AM |
4645 | v = (unsigned long) addr[1] << 24; |
4646 | v |= (unsigned long) addr[0] << 16; | |
4647 | v |= (unsigned long) addr[3] << 8; | |
4648 | v |= (unsigned long) addr[2]; | |
4649 | return v; | |
e135f41b NC |
4650 | } |
4651 | ||
4652 | #define COERCE32(x) (((bfd_signed_vma) (x) ^ 0x80000000) - 0x80000000) | |
4653 | ||
edeb6e24 AM |
4654 | static bfd_signed_vma |
4655 | bfd_getp_signed_32 (const void *p) | |
e135f41b | 4656 | { |
edeb6e24 AM |
4657 | const bfd_byte *addr = p; |
4658 | unsigned long v; | |
116c20d2 | 4659 | |
edeb6e24 AM |
4660 | v = (unsigned long) addr[1] << 24; |
4661 | v |= (unsigned long) addr[0] << 16; | |
4662 | v |= (unsigned long) addr[3] << 8; | |
4663 | v |= (unsigned long) addr[2]; | |
4664 | return COERCE32 (v); | |
e135f41b NC |
4665 | } |
4666 | ||
edeb6e24 AM |
4667 | static void |
4668 | bfd_putp32 (bfd_vma data, void *p) | |
e135f41b | 4669 | { |
edeb6e24 | 4670 | bfd_byte *addr = p; |
116c20d2 | 4671 | |
edeb6e24 AM |
4672 | addr[0] = (data >> 16) & 0xff; |
4673 | addr[1] = (data >> 24) & 0xff; | |
4674 | addr[2] = (data >> 0) & 0xff; | |
4675 | addr[3] = (data >> 8) & 0xff; | |
e135f41b | 4676 | } |
116c20d2 NC |
4677 | |
4678 | const bfd_target MY (vec) = | |
4679 | { | |
4680 | TARGETNAME, /* Name. */ | |
4681 | bfd_target_aout_flavour, | |
4682 | BFD_ENDIAN_LITTLE, /* Target byte order (little). */ | |
4683 | BFD_ENDIAN_LITTLE, /* Target headers byte order (little). */ | |
4684 | (HAS_RELOC | EXEC_P | /* Object flags. */ | |
4685 | HAS_LINENO | HAS_DEBUG | | |
4686 | HAS_SYMS | HAS_LOCALS | WP_TEXT), | |
4687 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA), | |
4688 | MY_symbol_leading_char, | |
4689 | AR_PAD_CHAR, /* AR_pad_char. */ | |
4690 | 15, /* AR_max_namelen. */ | |
0aabe54e | 4691 | 0, /* match priority. */ |
116c20d2 NC |
4692 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
4693 | bfd_getp32, bfd_getp_signed_32, bfd_putp32, | |
4694 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */ | |
4695 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
4696 | bfd_getp32, bfd_getp_signed_32, bfd_putp32, | |
4697 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Headers. */ | |
d00dd7dc AM |
4698 | { /* bfd_check_format. */ |
4699 | _bfd_dummy_target, | |
4700 | MY_object_p, | |
4701 | bfd_generic_archive_p, | |
4702 | MY_core_file_p | |
4703 | }, | |
4704 | { /* bfd_set_format. */ | |
4705 | _bfd_bool_bfd_false_error, | |
4706 | MY_mkobject, | |
4707 | _bfd_generic_mkarchive, | |
4708 | _bfd_bool_bfd_false_error | |
4709 | }, | |
4710 | { /* bfd_write_contents. */ | |
4711 | _bfd_bool_bfd_false_error, | |
4712 | MY_write_object_contents, | |
4713 | _bfd_write_archive_contents, | |
4714 | _bfd_bool_bfd_false_error | |
4715 | }, | |
4716 | ||
4717 | BFD_JUMP_TABLE_GENERIC (MY), | |
4718 | BFD_JUMP_TABLE_COPY (MY), | |
4719 | BFD_JUMP_TABLE_CORE (MY), | |
4720 | BFD_JUMP_TABLE_ARCHIVE (MY), | |
4721 | BFD_JUMP_TABLE_SYMBOLS (MY), | |
4722 | BFD_JUMP_TABLE_RELOCS (MY), | |
4723 | BFD_JUMP_TABLE_WRITE (MY), | |
4724 | BFD_JUMP_TABLE_LINK (MY), | |
4725 | BFD_JUMP_TABLE_DYNAMIC (MY), | |
116c20d2 NC |
4726 | |
4727 | /* Alternative_target. */ | |
4728 | NULL, | |
4729 | ||
4730 | (void *) MY_backend_data | |
4731 | }; |