/src/binutils-gdb/bfd/pdp11.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* BFD back-end for PDP-11 a.out binaries. |
2 | | Copyright (C) 2001-2024 Free Software Foundation, Inc. |
3 | | |
4 | | This file is part of BFD, the Binary File Descriptor library. |
5 | | |
6 | | This program is free software; you can redistribute it and/or modify |
7 | | it under the terms of the GNU General Public License as published by |
8 | | the Free Software Foundation; either version 3 of the License, or |
9 | | (at your option) any later version. |
10 | | |
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. |
15 | | |
16 | | You should have received a copy of the GNU General Public License |
17 | | along with this program; if not, write to the Free Software |
18 | | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | | MA 02110-1301, USA. */ |
20 | | |
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 |
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. |
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) |
34 | | |
35 | | Search for TODO to find other areas needing more work. */ |
36 | | |
37 | | #define BYTES_IN_WORD 2 |
38 | 1.06k | #define BYTES_IN_LONG 4 |
39 | | #define ARCH_SIZE 16 |
40 | | #undef TARGET_IS_BIG_ENDIAN_P |
41 | | |
42 | 70.1k | #define TARGET_PAGE_SIZE 8192 |
43 | | #define SEGMENT__SIZE TARGET_PAGE_SIZE |
44 | | |
45 | 19.9k | #define DEFAULT_ARCH bfd_arch_pdp11 |
46 | | #define DEFAULT_MID M_PDP11 |
47 | | |
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 | 19.9k | #define MY(OP) CONCAT2 (pdp11_aout_,OP) |
52 | | |
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 | 21.6k | #define TEXT_START_ADDR 0 |
58 | | |
59 | | /* The header is not included in the text segment. */ |
60 | 43.2k | #define N_HEADER_IN_TEXT(x) 0 |
61 | | |
62 | | /* There is no flags field. */ |
63 | | #define N_FLAGS(execp) 0 |
64 | | |
65 | | #define N_SET_FLAGS(execp, flags) do { } while (0) |
66 | 1.68M | #define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ |
67 | 1.68M | && N_MAGIC(x) != NMAGIC \ |
68 | 1.68M | && N_MAGIC(x) != IMAGIC \ |
69 | 1.68M | && N_MAGIC(x) != ZMAGIC) |
70 | | |
71 | | #include "sysdep.h" |
72 | | #include <limits.h> |
73 | | #include "bfd.h" |
74 | | |
75 | | #define external_exec pdp11_external_exec |
76 | | struct pdp11_external_exec |
77 | | { |
78 | | bfd_byte e_info[2]; /* Magic number. */ |
79 | | bfd_byte e_text[2]; /* Length of text section in bytes. */ |
80 | | bfd_byte e_data[2]; /* Length of data section in bytes. */ |
81 | | bfd_byte e_bss[2]; /* Length of bss area in bytes. */ |
82 | | bfd_byte e_syms[2]; /* Length of symbol table in bytes. */ |
83 | | bfd_byte e_entry[2]; /* Start address. */ |
84 | | bfd_byte e_unused[2]; /* Not used. */ |
85 | | bfd_byte e_flag[2]; /* Relocation info stripped. */ |
86 | | bfd_byte e_relocatable; /* Ugly hack. */ |
87 | | }; |
88 | | |
89 | 1.82M | #define EXEC_BYTES_SIZE (8 * 2) |
90 | | |
91 | | #define A_MAGIC1 OMAGIC |
92 | 3.41M | #define OMAGIC 0407 /* ...object file or impure executable. */ |
93 | | #define A_MAGIC2 NMAGIC |
94 | 3.38M | #define NMAGIC 0410 /* Pure executable. */ |
95 | 1.86M | #define ZMAGIC 0413 /* Demand-paged executable. */ |
96 | 3.40M | #define IMAGIC 0411 /* Separated I&D. */ |
97 | | #define A_MAGIC3 IMAGIC |
98 | | #define A_MAGIC4 0405 /* Overlay. */ |
99 | | #define A_MAGIC5 0430 /* Auto-overlay (nonseparate). */ |
100 | | #define A_MAGIC6 0431 /* Auto-overlay (separate). */ |
101 | 114k | #define QMAGIC 0 |
102 | | #define BMAGIC 0 |
103 | | |
104 | 19.9k | #define A_FLAG_RELOC_STRIPPED 0x0001 |
105 | | |
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. */ |
119 | | #define external_nlist pdp11_external_nlist |
120 | | struct pdp11_external_nlist |
121 | | { |
122 | | bfd_byte e_desc[2]; /* The desc field for .stab symbols, else 0. */ |
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 | | }; |
128 | | |
129 | 20.4k | #define EXTERNAL_NLIST_SIZE 8 |
130 | | |
131 | 119k | #define N_TXTOFF(x) (EXEC_BYTES_SIZE) |
132 | 99.9k | #define N_DATOFF(x) (N_TXTOFF(x) + (x)->a_text) |
133 | 79.9k | #define N_TRELOFF(x) (N_DATOFF(x) + (x)->a_data) |
134 | 59.9k | #define N_DRELOFF(x) (N_TRELOFF(x) + (x)->a_trsize) |
135 | 39.9k | #define N_SYMOFF(x) (N_DRELOFF(x) + (x)->a_drsize) |
136 | 19.9k | #define N_STROFF(x) (N_SYMOFF(x) + (x)->a_syms) |
137 | | |
138 | 0 | #define WRITE_HEADERS(abfd, execp) pdp11_aout_write_headers (abfd, execp) |
139 | | |
140 | | #include "libbfd.h" |
141 | | #include "libaout.h" |
142 | | |
143 | 1.70M | #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) |
148 | | static bool MY(write_object_contents) (bfd *); |
149 | | #define MY_text_includes_header 1 |
150 | | |
151 | | #define MY_BFD_TARGET |
152 | | |
153 | | #include "aout-target.h" |
154 | | |
155 | | /* Start of modified aoutx.h. */ |
156 | 0 | #define KEEPIT udata.i |
157 | | |
158 | | #include <string.h> /* For strchr and friends. */ |
159 | | #include "bfd.h" |
160 | | #include "sysdep.h" |
161 | | #include "safe-ctype.h" |
162 | | #include "bfdlink.h" |
163 | | |
164 | | #include "libaout.h" |
165 | | #include "aout/aout64.h" |
166 | | #include "aout/stab_gnu.h" |
167 | | #include "aout/ar.h" |
168 | | |
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. */ |
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 |
185 | | #undef N_STAB |
186 | 0 | #define N_TYPE 0x1f /* Type mask. */ |
187 | 94 | #define N_UNDF 0x00 /* Undefined. */ |
188 | 178k | #define N_ABS 0x01 /* Absolute. */ |
189 | 21.0k | #define N_TEXT 0x02 /* Text segment. */ |
190 | 20.3k | #define N_DATA 0x03 /* Data segment. */ |
191 | 20.5k | #define N_BSS 0x04 /* Bss segment. */ |
192 | 0 | #define N_REG 0x14 /* Register symbol. */ |
193 | 112 | #define N_FN 0x1f /* File name. */ |
194 | 125k | #define N_EXT 0x20 /* External flag. */ |
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 | | */ |
201 | | |
202 | 81.4k | #define RELOC_SIZE 2 |
203 | | |
204 | 40.2k | #define RELFLG 0x0001 /* PC-relative flag. */ |
205 | 80.4k | #define RTYPE 0x000e /* Type mask. */ |
206 | 0 | #define RIDXMASK 0xfff0 /* Index mask. */ |
207 | | |
208 | 40.2k | #define RABS 0x00 /* Absolute. */ |
209 | 0 | #define RTEXT 0x02 /* Text. */ |
210 | 0 | #define RDATA 0x04 /* Data. */ |
211 | 0 | #define RBSS 0x06 /* Bss. */ |
212 | 40.2k | #define REXT 0x08 /* External. */ |
213 | | |
214 | 26.5k | #define RINDEX(x) (((x) & 0xfff0) >> 4) |
215 | | |
216 | | #ifndef MY_final_link_relocate |
217 | 0 | #define MY_final_link_relocate _bfd_final_link_relocate |
218 | | #endif |
219 | | |
220 | | #ifndef MY_relocate_contents |
221 | 0 | #define MY_relocate_contents _bfd_relocate_contents |
222 | | #endif |
223 | | |
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 | | |
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 bool separate_i_d = false; |
279 | | |
280 | | reloc_howto_type howto_table_pdp11[] = |
281 | | { |
282 | | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ |
283 | | HOWTO( 0, 0, 2, 16, false, 0, complain_overflow_dont,0,"16", true, 0x0000ffff,0x0000ffff, false), |
284 | | HOWTO( 1, 0, 2, 16, true, 0, complain_overflow_dont,0,"DISP16", true, 0x0000ffff,0x0000ffff, false), |
285 | | HOWTO( 2, 0, 4, 32, false, 0, complain_overflow_dont,0,"32", true, 0x0000ffff,0x0000ffff, false), |
286 | | }; |
287 | | |
288 | 0 | #define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0])) |
289 | | |
290 | | |
291 | | static bool aout_link_check_archive_element (bfd *, struct bfd_link_info *, |
292 | | struct bfd_link_hash_entry *, |
293 | | const char *, bool *); |
294 | | static bool aout_link_add_object_symbols (bfd *, struct bfd_link_info *); |
295 | | static bool aout_link_add_symbols (bfd *, struct bfd_link_info *); |
296 | | static bool aout_link_write_symbols (struct aout_final_link_info *, bfd *); |
297 | | |
298 | | |
299 | | reloc_howto_type * |
300 | | NAME (aout, reloc_type_lookup) (bfd * abfd ATTRIBUTE_UNUSED, |
301 | | bfd_reloc_code_real_type code) |
302 | 0 | { |
303 | 0 | switch (code) |
304 | 0 | { |
305 | 0 | case BFD_RELOC_16: |
306 | 0 | return &howto_table_pdp11[0]; |
307 | 0 | case BFD_RELOC_16_PCREL: |
308 | 0 | return &howto_table_pdp11[1]; |
309 | 0 | case BFD_RELOC_32: |
310 | 0 | return &howto_table_pdp11[2]; |
311 | 0 | default: |
312 | 0 | return NULL; |
313 | 0 | } |
314 | 0 | } |
315 | | |
316 | | reloc_howto_type * |
317 | | NAME (aout, reloc_name_lookup) (bfd *abfd ATTRIBUTE_UNUSED, |
318 | | const char *r_name) |
319 | 0 | { |
320 | 0 | unsigned int i; |
321 | |
|
322 | 0 | for (i = 0; |
323 | 0 | i < sizeof (howto_table_pdp11) / sizeof (howto_table_pdp11[0]); |
324 | 0 | i++) |
325 | 0 | if (howto_table_pdp11[i].name != NULL |
326 | 0 | && strcasecmp (howto_table_pdp11[i].name, r_name) == 0) |
327 | 0 | return &howto_table_pdp11[i]; |
328 | | |
329 | 0 | return NULL; |
330 | 0 | } |
331 | | |
332 | | /* Disambiguate conflicts between normal symbol types and .stab symbol types |
333 | | (undefined externals N_UNDF+N_EXT vs. global variables N_GYSM and external |
334 | | bss symbols N_BSS+N_EXT vs. function names N_FUN) with a hack to look for |
335 | | the ':' in the global variable or function name string. */ |
336 | | |
337 | | static int |
338 | | is_stab (int type, const char *name) |
339 | 43.3k | { |
340 | 43.3k | if (type == N_GSYM || type == N_FUN) |
341 | 153 | return strchr (name, ':') != NULL; |
342 | 43.1k | return type > N_FUN; |
343 | 43.3k | } |
344 | | |
345 | | static int |
346 | | pdp11_aout_write_headers (bfd *abfd, struct internal_exec *execp) |
347 | 0 | { |
348 | 0 | struct external_exec exec_bytes; |
349 | |
|
350 | 0 | if (adata(abfd).magic == undecided_magic) |
351 | 0 | NAME (aout, adjust_sizes_and_vmas) (abfd); |
352 | |
|
353 | 0 | execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; |
354 | 0 | execp->a_entry = bfd_get_start_address (abfd); |
355 | |
|
356 | 0 | if (obj_textsec (abfd)->reloc_count > 0 |
357 | 0 | || obj_datasec (abfd)->reloc_count > 0) |
358 | 0 | { |
359 | 0 | execp->a_trsize = execp->a_text; |
360 | 0 | execp->a_drsize = execp->a_data; |
361 | 0 | } |
362 | 0 | else |
363 | 0 | { |
364 | 0 | execp->a_trsize = 0; |
365 | 0 | execp->a_drsize = 0; |
366 | 0 | } |
367 | |
|
368 | 0 | if (!NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes)) |
369 | 0 | return false; |
370 | | |
371 | 0 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) |
372 | 0 | return false; |
373 | | |
374 | 0 | if (bfd_write (&exec_bytes, EXEC_BYTES_SIZE, abfd) != EXEC_BYTES_SIZE) |
375 | 0 | return false; |
376 | | |
377 | | /* Now write out reloc info, followed by syms and strings. */ |
378 | 0 | if (bfd_get_outsymbols (abfd) != NULL |
379 | 0 | && bfd_get_symcount (abfd) != 0) |
380 | 0 | { |
381 | 0 | if (bfd_seek (abfd, N_SYMOFF (execp), SEEK_SET) != 0) |
382 | 0 | return false; |
383 | | |
384 | 0 | if (! NAME (aout, write_syms) (abfd)) |
385 | 0 | return false; |
386 | 0 | } |
387 | | |
388 | 0 | if (obj_textsec (abfd)->reloc_count > 0 |
389 | 0 | || obj_datasec (abfd)->reloc_count > 0) |
390 | 0 | { |
391 | 0 | if (bfd_seek (abfd, N_TRELOFF (execp), SEEK_SET) != 0 |
392 | 0 | || !NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd)) |
393 | 0 | || bfd_seek (abfd, N_DRELOFF (execp), SEEK_SET) != 0 |
394 | 0 | || !NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) |
395 | 0 | return false; |
396 | 0 | } |
397 | | |
398 | 0 | return true; |
399 | 0 | } |
400 | | |
401 | | /* Write an object file. |
402 | | Section contents have already been written. We write the |
403 | | file header, symbols, and relocation. */ |
404 | | |
405 | | static bool |
406 | | MY(write_object_contents) (bfd *abfd) |
407 | 0 | { |
408 | 0 | struct internal_exec *execp = exec_hdr (abfd); |
409 | | |
410 | | /* We must make certain that the magic number has been set. This |
411 | | will normally have been done by set_section_contents, but only if |
412 | | there actually are some section contents. */ |
413 | 0 | if (! abfd->output_has_begun) |
414 | 0 | NAME (aout, adjust_sizes_and_vmas) (abfd); |
415 | |
|
416 | 0 | obj_reloc_entry_size (abfd) = RELOC_SIZE; |
417 | |
|
418 | 0 | return WRITE_HEADERS (abfd, execp); |
419 | 0 | } |
420 | | |
421 | | /* Swap the information in an executable header @var{raw_bytes} taken |
422 | | from a raw byte stream memory image into the internal exec header |
423 | | structure "execp". */ |
424 | | |
425 | | #ifndef NAME_swap_exec_header_in |
426 | | void |
427 | | NAME (aout, swap_exec_header_in) (bfd *abfd, |
428 | | struct external_exec *bytes, |
429 | | struct internal_exec *execp) |
430 | 19.9k | { |
431 | | /* The internal_exec structure has some fields that are unused in this |
432 | | configuration (IE for i960), so ensure that all such uninitialized |
433 | | fields are zero'd out. There are places where two of these structs |
434 | | are memcmp'd, and thus the contents do matter. */ |
435 | 19.9k | memset ((void *) execp, 0, sizeof (struct internal_exec)); |
436 | | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
437 | 19.9k | execp->a_info = GET_MAGIC (abfd, bytes->e_info); |
438 | 19.9k | execp->a_text = GET_WORD (abfd, bytes->e_text); |
439 | 19.9k | execp->a_data = GET_WORD (abfd, bytes->e_data); |
440 | 19.9k | execp->a_bss = GET_WORD (abfd, bytes->e_bss); |
441 | 19.9k | execp->a_syms = GET_WORD (abfd, bytes->e_syms); |
442 | 19.9k | execp->a_entry = GET_WORD (abfd, bytes->e_entry); |
443 | | |
444 | 19.9k | if (GET_WORD (abfd, bytes->e_flag) & A_FLAG_RELOC_STRIPPED) |
445 | 8.08k | { |
446 | 8.08k | execp->a_trsize = 0; |
447 | 8.08k | execp->a_drsize = 0; |
448 | 8.08k | } |
449 | 11.9k | else |
450 | 11.9k | { |
451 | 11.9k | execp->a_trsize = execp->a_text; |
452 | 11.9k | execp->a_drsize = execp->a_data; |
453 | 11.9k | } |
454 | 19.9k | } |
455 | | #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in) |
456 | | #endif |
457 | | |
458 | | /* Swap the information in an internal exec header structure |
459 | | "execp" into the buffer "bytes" ready for writing to disk. */ |
460 | | bool |
461 | | NAME (aout, swap_exec_header_out) (bfd *abfd, |
462 | | struct internal_exec *execp, |
463 | | struct external_exec *bytes) |
464 | 0 | { |
465 | 0 | const char *err = NULL; |
466 | 0 | uint64_t val; |
467 | 0 | #define MAXVAL(x) ((UINT64_C (1) << (8 * sizeof (x) - 1) << 1) - 1) |
468 | 0 | if ((val = execp->a_text) > MAXVAL (bytes->e_text)) |
469 | 0 | err = "e_text"; |
470 | 0 | else if ((val = execp->a_data) > MAXVAL (bytes->e_data)) |
471 | 0 | err = "e_data"; |
472 | 0 | else if ((val = execp->a_bss) > MAXVAL (bytes->e_bss)) |
473 | 0 | err = "e_bss"; |
474 | 0 | else if ((val = execp->a_syms) > MAXVAL (bytes->e_syms)) |
475 | 0 | err = "e_syms"; |
476 | 0 | else if ((val = execp->a_entry) > MAXVAL (bytes->e_entry)) |
477 | 0 | err = "e_entry"; |
478 | 0 | #undef MAXVAL |
479 | 0 | if (err) |
480 | 0 | { |
481 | 0 | _bfd_error_handler (_("%pB: %#" PRIx64 " overflows header %s field"), |
482 | 0 | abfd, val, err); |
483 | 0 | bfd_set_error (bfd_error_file_too_big); |
484 | 0 | return false; |
485 | 0 | } |
486 | | |
487 | | /* Now fill in fields in the raw data, from the fields in the exec struct. */ |
488 | 0 | PUT_MAGIC (abfd, execp->a_info, bytes->e_info); |
489 | 0 | PUT_WORD (abfd, execp->a_text, bytes->e_text); |
490 | 0 | PUT_WORD (abfd, execp->a_data, bytes->e_data); |
491 | 0 | PUT_WORD (abfd, execp->a_bss, bytes->e_bss); |
492 | 0 | PUT_WORD (abfd, execp->a_syms, bytes->e_syms); |
493 | 0 | PUT_WORD (abfd, execp->a_entry, bytes->e_entry); |
494 | 0 | PUT_WORD (abfd, 0, bytes->e_unused); |
495 | |
|
496 | 0 | if ((execp->a_trsize == 0 || execp->a_text == 0) |
497 | 0 | && (execp->a_drsize == 0 || execp->a_data == 0)) |
498 | 0 | PUT_WORD (abfd, A_FLAG_RELOC_STRIPPED, bytes->e_flag); |
499 | 0 | else if (execp->a_trsize == execp->a_text |
500 | 0 | && execp->a_drsize == execp->a_data) |
501 | 0 | PUT_WORD (abfd, 0, bytes->e_flag); |
502 | 0 | else |
503 | 0 | { |
504 | | /* TODO: print a proper warning message. */ |
505 | 0 | fprintf (stderr, "BFD:%s:%d: internal error\n", __FILE__, __LINE__); |
506 | 0 | PUT_WORD (abfd, 0, bytes->e_flag); |
507 | 0 | } |
508 | 0 | return true; |
509 | 0 | } |
510 | | |
511 | | /* Make all the section for an a.out file. */ |
512 | | |
513 | | bool |
514 | | NAME (aout, make_sections) (bfd *abfd) |
515 | 19.9k | { |
516 | 19.9k | if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL) |
517 | 0 | return false; |
518 | 19.9k | if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL) |
519 | 0 | return false; |
520 | 19.9k | if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL) |
521 | 0 | return false; |
522 | 19.9k | return true; |
523 | 19.9k | } |
524 | | |
525 | | /* Some a.out variant thinks that the file open in ABFD |
526 | | checking is an a.out file. Do some more checking, and set up |
527 | | for access if it really is. Call back to the calling |
528 | | environment's "finish up" function just before returning, to |
529 | | handle any last-minute setup. */ |
530 | | |
531 | | bfd_cleanup |
532 | | NAME (aout, some_aout_object_p) (bfd *abfd, |
533 | | struct internal_exec *execp, |
534 | | bfd_cleanup (*callback_to_real_object_p) (bfd *)) |
535 | 19.9k | { |
536 | 19.9k | struct aout_data_struct *rawptr, *oldrawptr; |
537 | 19.9k | bfd_cleanup result; |
538 | 19.9k | size_t amt = sizeof (*rawptr); |
539 | | |
540 | 19.9k | rawptr = bfd_zalloc (abfd, amt); |
541 | 19.9k | if (rawptr == NULL) |
542 | 0 | return NULL; |
543 | | |
544 | 19.9k | oldrawptr = abfd->tdata.aout_data; |
545 | 19.9k | abfd->tdata.aout_data = rawptr; |
546 | | |
547 | | /* Copy the contents of the old tdata struct. */ |
548 | 19.9k | if (oldrawptr != NULL) |
549 | 0 | *abfd->tdata.aout_data = *oldrawptr; |
550 | | |
551 | 19.9k | abfd->tdata.aout_data->a.hdr = &rawptr->e; |
552 | | /* Copy in the internal_exec struct. */ |
553 | 19.9k | *(abfd->tdata.aout_data->a.hdr) = *execp; |
554 | 19.9k | execp = abfd->tdata.aout_data->a.hdr; |
555 | | |
556 | | /* Set the file flags. */ |
557 | 19.9k | abfd->flags = BFD_NO_FLAGS; |
558 | 19.9k | if (execp->a_drsize || execp->a_trsize) |
559 | 10.0k | abfd->flags |= HAS_RELOC; |
560 | | /* Setting of EXEC_P has been deferred to the bottom of this function. */ |
561 | 19.9k | if (execp->a_syms) |
562 | 12.3k | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; |
563 | 19.9k | if (N_DYNAMIC (execp)) |
564 | 0 | abfd->flags |= DYNAMIC; |
565 | | |
566 | 19.9k | if (N_MAGIC (execp) == ZMAGIC) |
567 | 7.21k | { |
568 | 7.21k | abfd->flags |= D_PAGED | WP_TEXT; |
569 | 7.21k | adata (abfd).magic = z_magic; |
570 | 7.21k | } |
571 | 12.7k | else if (N_MAGIC (execp) == NMAGIC) |
572 | 7.01k | { |
573 | 7.01k | abfd->flags |= WP_TEXT; |
574 | 7.01k | adata (abfd).magic = n_magic; |
575 | 7.01k | } |
576 | 5.77k | else if (N_MAGIC (execp) == OMAGIC) |
577 | 4.49k | adata (abfd).magic = o_magic; |
578 | 1.27k | else if (N_MAGIC (execp) == IMAGIC) |
579 | 1.27k | adata (abfd).magic = i_magic; |
580 | 0 | else |
581 | 0 | { |
582 | | /* Should have been checked with N_BADMAG before this routine |
583 | | was called. */ |
584 | 0 | abort (); |
585 | 0 | } |
586 | | |
587 | 19.9k | abfd->start_address = execp->a_entry; |
588 | | |
589 | 19.9k | abfd->symcount = execp->a_syms / sizeof (struct external_nlist); |
590 | | |
591 | | /* The default relocation entry size is that of traditional V7 Unix. */ |
592 | 19.9k | obj_reloc_entry_size (abfd) = RELOC_SIZE; |
593 | | |
594 | | /* The default symbol entry size is that of traditional Unix. */ |
595 | 19.9k | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; |
596 | | |
597 | 19.9k | if (! NAME (aout, make_sections) (abfd)) |
598 | 0 | goto error_ret; |
599 | | |
600 | 19.9k | obj_datasec (abfd)->size = execp->a_data; |
601 | 19.9k | obj_bsssec (abfd)->size = execp->a_bss; |
602 | | |
603 | 19.9k | obj_textsec (abfd)->flags = |
604 | 19.9k | (execp->a_trsize != 0 |
605 | 19.9k | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) |
606 | 19.9k | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); |
607 | 19.9k | obj_datasec (abfd)->flags = |
608 | 19.9k | (execp->a_drsize != 0 |
609 | 19.9k | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) |
610 | 19.9k | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); |
611 | 19.9k | obj_bsssec (abfd)->flags = SEC_ALLOC; |
612 | | |
613 | | #ifdef THIS_IS_ONLY_DOCUMENTATION |
614 | | /* The common code can't fill in these things because they depend |
615 | | on either the start address of the text segment, the rounding |
616 | | up of virtual addresses between segments, or the starting file |
617 | | position of the text segment -- all of which varies among different |
618 | | versions of a.out. */ |
619 | | |
620 | | /* Call back to the format-dependent code to fill in the rest of the |
621 | | fields and do any further cleanup. Things that should be filled |
622 | | in by the callback: */ |
623 | | struct exec *execp = exec_hdr (abfd); |
624 | | |
625 | | obj_textsec (abfd)->size = N_TXTSIZE (execp); |
626 | | /* Data and bss are already filled in since they're so standard. */ |
627 | | |
628 | | /* The virtual memory addresses of the sections. */ |
629 | | obj_textsec (abfd)->vma = N_TXTADDR (execp); |
630 | | obj_datasec (abfd)->vma = N_DATADDR (execp); |
631 | | obj_bsssec (abfd)->vma = N_BSSADDR (execp); |
632 | | |
633 | | /* The file offsets of the sections. */ |
634 | | obj_textsec (abfd)->filepos = N_TXTOFF (execp); |
635 | | obj_datasec (abfd)->filepos = N_DATOFF (execp); |
636 | | |
637 | | /* The file offsets of the relocation info. */ |
638 | | obj_textsec (abfd)->rel_filepos = N_TRELOFF (execp); |
639 | | obj_datasec (abfd)->rel_filepos = N_DRELOFF (execp); |
640 | | |
641 | | /* The file offsets of the string table and symbol table. */ |
642 | | obj_str_filepos (abfd) = N_STROFF (execp); |
643 | | obj_sym_filepos (abfd) = N_SYMOFF (execp); |
644 | | |
645 | | /* Determine the architecture and machine type of the object file. */ |
646 | | abfd->obj_arch = bfd_arch_obscure; |
647 | | |
648 | | adata (abfd)->page_size = TARGET_PAGE_SIZE; |
649 | | adata (abfd)->segment_size = SEGMENT_SIZE; |
650 | | adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE; |
651 | | |
652 | | return _bfd_no_cleanup; |
653 | | |
654 | | /* The architecture is encoded in various ways in various a.out variants, |
655 | | or is not encoded at all in some of them. The relocation size depends |
656 | | on the architecture and the a.out variant. Finally, the return value |
657 | | is the bfd_target vector in use. If an error occurs, return zero and |
658 | | set bfd_error to the appropriate error code. |
659 | | |
660 | | Formats such as b.out, which have additional fields in the a.out |
661 | | header, should cope with them in this callback as well. */ |
662 | | #endif /* DOCUMENTATION */ |
663 | | |
664 | 19.9k | result = (*callback_to_real_object_p) (abfd); |
665 | | |
666 | | /* Now that the segment addresses have been worked out, take a better |
667 | | guess at whether the file is executable. If the entry point |
668 | | is within the text segment, assume it is. (This makes files |
669 | | executable even if their entry point address is 0, as long as |
670 | | their text starts at zero.). |
671 | | |
672 | | This test had to be changed to deal with systems where the text segment |
673 | | runs at a different location than the default. The problem is that the |
674 | | entry address can appear to be outside the text segment, thus causing an |
675 | | erroneous conclusion that the file isn't executable. |
676 | | |
677 | | To fix this, we now accept any non-zero entry point as an indication of |
678 | | executability. This will work most of the time, since only the linker |
679 | | sets the entry point, and that is likely to be non-zero for most systems. */ |
680 | | |
681 | 19.9k | if (execp->a_entry != 0 |
682 | 19.9k | || (execp->a_entry >= obj_textsec (abfd)->vma |
683 | 6.72k | && execp->a_entry < (obj_textsec (abfd)->vma |
684 | 6.72k | + obj_textsec (abfd)->size) |
685 | 6.72k | && execp->a_trsize == 0 |
686 | 6.72k | && execp->a_drsize == 0)) |
687 | 14.6k | abfd->flags |= EXEC_P; |
688 | | #ifdef STAT_FOR_EXEC |
689 | | else |
690 | | { |
691 | | struct stat stat_buf; |
692 | | |
693 | | /* The original heuristic doesn't work in some important cases. |
694 | | The a.out file has no information about the text start |
695 | | address. For files (like kernels) linked to non-standard |
696 | | addresses (ld -Ttext nnn) the entry point may not be between |
697 | | the default text start (obj_textsec(abfd)->vma) and |
698 | | (obj_textsec(abfd)->vma) + text size. This is not just a mach |
699 | | issue. Many kernels are loaded at non standard addresses. */ |
700 | | if (abfd->iostream != NULL |
701 | | && (abfd->flags & BFD_IN_MEMORY) == 0 |
702 | | && (fstat (fileno ((FILE *) (abfd->iostream)), &stat_buf) == 0) |
703 | | && ((stat_buf.st_mode & 0111) != 0)) |
704 | | abfd->flags |= EXEC_P; |
705 | | } |
706 | | #endif /* STAT_FOR_EXEC */ |
707 | | |
708 | 19.9k | if (result) |
709 | 19.9k | return result; |
710 | | |
711 | 0 | error_ret: |
712 | 0 | bfd_release (abfd, rawptr); |
713 | 0 | abfd->tdata.aout_data = oldrawptr; |
714 | 0 | return NULL; |
715 | 19.9k | } |
716 | | |
717 | | /* Initialize ABFD for use with a.out files. */ |
718 | | |
719 | | bool |
720 | | NAME (aout, mkobject) (bfd *abfd) |
721 | 0 | { |
722 | 0 | struct aout_data_struct *rawptr; |
723 | 0 | size_t amt = sizeof (struct aout_data_struct); |
724 | |
|
725 | 0 | bfd_set_error (bfd_error_system_call); |
726 | | |
727 | | /* Use an intermediate variable for clarity. */ |
728 | 0 | rawptr = bfd_zalloc (abfd, amt); |
729 | |
|
730 | 0 | if (rawptr == NULL) |
731 | 0 | return false; |
732 | | |
733 | 0 | abfd->tdata.aout_data = rawptr; |
734 | 0 | exec_hdr (abfd) = &(rawptr->e); |
735 | |
|
736 | 0 | obj_textsec (abfd) = NULL; |
737 | 0 | obj_datasec (abfd) = NULL; |
738 | 0 | obj_bsssec (abfd) = NULL; |
739 | |
|
740 | 0 | return true; |
741 | 0 | } |
742 | | |
743 | | /* Keep track of machine architecture and machine type for |
744 | | a.out's. Return the <<machine_type>> for a particular |
745 | | architecture and machine, or <<M_UNKNOWN>> if that exact architecture |
746 | | and machine can't be represented in a.out format. |
747 | | |
748 | | If the architecture is understood, machine type 0 (default) |
749 | | is always understood. */ |
750 | | |
751 | | enum machine_type |
752 | | NAME (aout, machine_type) (enum bfd_architecture arch, |
753 | | unsigned long machine, |
754 | | bool *unknown) |
755 | 0 | { |
756 | 0 | enum machine_type arch_flags; |
757 | |
|
758 | 0 | arch_flags = M_UNKNOWN; |
759 | 0 | *unknown = true; |
760 | |
|
761 | 0 | switch (arch) |
762 | 0 | { |
763 | 0 | case bfd_arch_sparc: |
764 | 0 | if (machine == 0 |
765 | 0 | || machine == bfd_mach_sparc |
766 | 0 | || machine == bfd_mach_sparc_sparclite |
767 | 0 | || machine == bfd_mach_sparc_v9) |
768 | 0 | arch_flags = M_SPARC; |
769 | 0 | else if (machine == bfd_mach_sparc_sparclet) |
770 | 0 | arch_flags = M_SPARCLET; |
771 | 0 | break; |
772 | | |
773 | 0 | case bfd_arch_i386: |
774 | 0 | if (machine == 0 |
775 | 0 | || machine == bfd_mach_i386_i386 |
776 | 0 | || machine == bfd_mach_i386_i386_intel_syntax) |
777 | 0 | arch_flags = M_386; |
778 | 0 | break; |
779 | | |
780 | 0 | case bfd_arch_arm: |
781 | 0 | if (machine == 0) arch_flags = M_ARM; |
782 | 0 | break; |
783 | | |
784 | 0 | case bfd_arch_mips: |
785 | 0 | switch (machine) |
786 | 0 | { |
787 | 0 | case 0: |
788 | 0 | case 2000: |
789 | 0 | case bfd_mach_mips3000: |
790 | 0 | arch_flags = M_MIPS1; |
791 | 0 | break; |
792 | 0 | case bfd_mach_mips4000: /* MIPS3 */ |
793 | 0 | case bfd_mach_mips4400: |
794 | 0 | case bfd_mach_mips8000: /* MIPS4 */ |
795 | 0 | case bfd_mach_mips6000: /* Real MIPS2: */ |
796 | 0 | arch_flags = M_MIPS2; |
797 | 0 | break; |
798 | 0 | default: |
799 | 0 | arch_flags = M_UNKNOWN; |
800 | 0 | break; |
801 | 0 | } |
802 | 0 | break; |
803 | | |
804 | 0 | case bfd_arch_ns32k: |
805 | 0 | switch (machine) |
806 | 0 | { |
807 | 0 | case 0: arch_flags = M_NS32532; break; |
808 | 0 | case 32032: arch_flags = M_NS32032; break; |
809 | 0 | case 32532: arch_flags = M_NS32532; break; |
810 | 0 | default: arch_flags = M_UNKNOWN; break; |
811 | 0 | } |
812 | 0 | break; |
813 | | |
814 | 0 | case bfd_arch_pdp11: |
815 | | /* TODO: arch_flags = M_PDP11; */ |
816 | 0 | *unknown = false; |
817 | 0 | break; |
818 | | |
819 | 0 | case bfd_arch_vax: |
820 | 0 | *unknown = false; |
821 | 0 | break; |
822 | | |
823 | 0 | default: |
824 | 0 | arch_flags = M_UNKNOWN; |
825 | 0 | } |
826 | | |
827 | 0 | if (arch_flags != M_UNKNOWN) |
828 | 0 | *unknown = false; |
829 | |
|
830 | 0 | return arch_flags; |
831 | 0 | } |
832 | | |
833 | | /* Set the architecture and the machine of the ABFD to the |
834 | | values ARCH and MACHINE. Verify that @ABFD's format |
835 | | can support the architecture required. */ |
836 | | |
837 | | bool |
838 | | NAME (aout, set_arch_mach) (bfd *abfd, |
839 | | enum bfd_architecture arch, |
840 | | unsigned long machine) |
841 | 0 | { |
842 | 0 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) |
843 | 0 | return false; |
844 | | |
845 | 0 | if (arch != bfd_arch_unknown) |
846 | 0 | { |
847 | 0 | bool unknown; |
848 | |
|
849 | 0 | NAME (aout, machine_type) (arch, machine, &unknown); |
850 | 0 | if (unknown) |
851 | 0 | return false; |
852 | 0 | } |
853 | | |
854 | 0 | obj_reloc_entry_size (abfd) = RELOC_SIZE; |
855 | |
|
856 | 0 | return (*aout_backend_info(abfd)->set_sizes) (abfd); |
857 | 0 | } |
858 | | |
859 | | static void |
860 | | adjust_o_magic (bfd *abfd, struct internal_exec *execp) |
861 | 0 | { |
862 | 0 | file_ptr pos = adata (abfd).exec_bytes_size; |
863 | 0 | bfd_vma vma = 0; |
864 | 0 | int pad = 0; |
865 | 0 | asection *text = obj_textsec (abfd); |
866 | 0 | asection *data = obj_datasec (abfd); |
867 | 0 | asection *bss = obj_bsssec (abfd); |
868 | | |
869 | | /* Text. */ |
870 | 0 | text->filepos = pos; |
871 | 0 | if (!text->user_set_vma) |
872 | 0 | text->vma = vma; |
873 | 0 | else |
874 | 0 | vma = text->vma; |
875 | |
|
876 | 0 | pos += execp->a_text; |
877 | 0 | vma += execp->a_text; |
878 | | |
879 | | /* Data. */ |
880 | 0 | if (!data->user_set_vma) |
881 | 0 | { |
882 | 0 | pos += pad; |
883 | 0 | vma += pad; |
884 | 0 | data->vma = vma; |
885 | 0 | } |
886 | 0 | else |
887 | 0 | vma = data->vma; |
888 | 0 | execp->a_text += pad; |
889 | |
|
890 | 0 | data->filepos = pos; |
891 | 0 | pos += data->size; |
892 | 0 | vma += data->size; |
893 | | |
894 | | /* BSS. */ |
895 | 0 | if (!bss->user_set_vma) |
896 | 0 | { |
897 | 0 | pos += pad; |
898 | 0 | vma += pad; |
899 | 0 | bss->vma = vma; |
900 | 0 | } |
901 | 0 | else if (data->size > 0 || bss->size > 0) /* PR25677: for objcopy --extract-symbol */ |
902 | 0 | { |
903 | | /* The VMA of the .bss section is set by the VMA of the |
904 | | .data section plus the size of the .data section. We may |
905 | | need to add padding bytes to make this true. */ |
906 | 0 | pad = bss->vma - vma; |
907 | 0 | if (pad < 0) |
908 | 0 | pad = 0; |
909 | 0 | pos += pad; |
910 | 0 | } |
911 | 0 | execp->a_data = data->size + pad; |
912 | 0 | bss->filepos = pos; |
913 | 0 | execp->a_bss = bss->size; |
914 | |
|
915 | 0 | N_SET_MAGIC (execp, OMAGIC); |
916 | 0 | } |
917 | | |
918 | | static void |
919 | | adjust_z_magic (bfd *abfd, struct internal_exec *execp) |
920 | 0 | { |
921 | 0 | bfd_size_type data_pad, text_pad; |
922 | 0 | file_ptr text_end; |
923 | 0 | const struct aout_backend_data *abdp; |
924 | | /* TRUE if text includes exec header. */ |
925 | 0 | bool ztih; |
926 | 0 | asection *text = obj_textsec (abfd); |
927 | 0 | asection *data = obj_datasec (abfd); |
928 | 0 | asection *bss = obj_bsssec (abfd); |
929 | |
|
930 | 0 | abdp = aout_backend_info (abfd); |
931 | | |
932 | | /* Text. */ |
933 | 0 | ztih = (abdp != NULL |
934 | 0 | && (abdp->text_includes_header |
935 | 0 | || obj_aout_subformat (abfd) == q_magic_format)); |
936 | 0 | text->filepos = (ztih |
937 | 0 | ? adata (abfd).exec_bytes_size |
938 | 0 | : adata (abfd).zmagic_disk_block_size); |
939 | 0 | if (!text->user_set_vma) |
940 | 0 | { |
941 | | /* ?? Do we really need to check for relocs here? */ |
942 | 0 | text->vma = ((abfd->flags & HAS_RELOC) |
943 | 0 | ? 0 |
944 | 0 | : (ztih |
945 | 0 | ? abdp->default_text_vma + adata (abfd).exec_bytes_size |
946 | 0 | : abdp->default_text_vma)); |
947 | 0 | text_pad = 0; |
948 | 0 | } |
949 | 0 | else |
950 | 0 | { |
951 | | /* The .text section is being loaded at an unusual address. We |
952 | | may need to pad it such that the .data section starts at a page |
953 | | boundary. */ |
954 | 0 | if (ztih) |
955 | 0 | text_pad = ((text->filepos - text->vma) |
956 | 0 | & (adata (abfd).page_size - 1)); |
957 | 0 | else |
958 | 0 | text_pad = (-text->vma |
959 | 0 | & (adata (abfd).page_size - 1)); |
960 | 0 | } |
961 | | |
962 | | /* Find start of data. */ |
963 | 0 | if (ztih) |
964 | 0 | { |
965 | 0 | text_end = text->filepos + execp->a_text; |
966 | 0 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
967 | 0 | } |
968 | 0 | else |
969 | 0 | { |
970 | | /* Note that if page_size == zmagic_disk_block_size, then |
971 | | filepos == page_size, and this case is the same as the ztih |
972 | | case. */ |
973 | 0 | text_end = execp->a_text; |
974 | 0 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
975 | 0 | text_end += text->filepos; |
976 | 0 | } |
977 | 0 | execp->a_text += text_pad; |
978 | | |
979 | | /* Data. */ |
980 | 0 | if (!data->user_set_vma) |
981 | 0 | { |
982 | 0 | bfd_vma vma; |
983 | 0 | vma = text->vma + execp->a_text; |
984 | 0 | data->vma = BFD_ALIGN (vma, adata (abfd).segment_size); |
985 | 0 | } |
986 | 0 | if (abdp && abdp->zmagic_mapped_contiguous) |
987 | 0 | { |
988 | 0 | text_pad = data->vma - (text->vma + execp->a_text); |
989 | | /* Only pad the text section if the data |
990 | | section is going to be placed after it. */ |
991 | 0 | if (text_pad > 0) |
992 | 0 | execp->a_text += text_pad; |
993 | 0 | } |
994 | 0 | data->filepos = text->filepos + execp->a_text; |
995 | | |
996 | | /* Fix up exec header while we're at it. */ |
997 | 0 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
998 | 0 | execp->a_text += adata (abfd).exec_bytes_size; |
999 | 0 | N_SET_MAGIC (execp, ZMAGIC); |
1000 | | |
1001 | | /* Spec says data section should be rounded up to page boundary. */ |
1002 | 0 | execp->a_data = align_power (data->size, bss->alignment_power); |
1003 | 0 | execp->a_data = BFD_ALIGN (execp->a_data, adata (abfd).page_size); |
1004 | 0 | data_pad = execp->a_data - data->size; |
1005 | | |
1006 | | /* BSS. */ |
1007 | 0 | if (!bss->user_set_vma) |
1008 | 0 | bss->vma = data->vma + execp->a_data; |
1009 | | /* If the BSS immediately follows the data section and extra space |
1010 | | in the page is left after the data section, fudge data |
1011 | | in the header so that the bss section looks smaller by that |
1012 | | amount. We'll start the bss section there, and lie to the OS. |
1013 | | (Note that a linker script, as well as the above assignment, |
1014 | | could have explicitly set the BSS vma to immediately follow |
1015 | | the data section.) */ |
1016 | 0 | if (align_power (bss->vma, bss->alignment_power) == data->vma + execp->a_data) |
1017 | 0 | execp->a_bss = data_pad > bss->size ? 0 : bss->size - data_pad; |
1018 | 0 | else |
1019 | 0 | execp->a_bss = bss->size; |
1020 | 0 | } |
1021 | | |
1022 | | static void |
1023 | | adjust_n_magic (bfd *abfd, struct internal_exec *execp) |
1024 | 0 | { |
1025 | 0 | file_ptr pos = adata (abfd).exec_bytes_size; |
1026 | 0 | bfd_vma vma = 0; |
1027 | 0 | int pad; |
1028 | 0 | asection *text = obj_textsec (abfd); |
1029 | 0 | asection *data = obj_datasec (abfd); |
1030 | 0 | asection *bss = obj_bsssec (abfd); |
1031 | | |
1032 | | /* Text. */ |
1033 | 0 | text->filepos = pos; |
1034 | 0 | if (!text->user_set_vma) |
1035 | 0 | text->vma = vma; |
1036 | 0 | else |
1037 | 0 | vma = text->vma; |
1038 | 0 | pos += execp->a_text; |
1039 | 0 | vma += execp->a_text; |
1040 | | |
1041 | | /* Data. */ |
1042 | 0 | data->filepos = pos; |
1043 | 0 | if (!data->user_set_vma) |
1044 | 0 | data->vma = BFD_ALIGN (vma, adata (abfd).segment_size); |
1045 | 0 | vma = data->vma; |
1046 | | |
1047 | | /* Since BSS follows data immediately, see if it needs alignment. */ |
1048 | 0 | vma += data->size; |
1049 | 0 | pad = align_power (vma, bss->alignment_power) - vma; |
1050 | 0 | execp->a_data = data->size + pad; |
1051 | 0 | pos += execp->a_data; |
1052 | | |
1053 | | /* BSS. */ |
1054 | 0 | if (!bss->user_set_vma) |
1055 | 0 | bss->vma = vma; |
1056 | 0 | else |
1057 | 0 | vma = bss->vma; |
1058 | | |
1059 | | /* Fix up exec header. */ |
1060 | 0 | execp->a_bss = bss->size; |
1061 | 0 | N_SET_MAGIC (execp, NMAGIC); |
1062 | 0 | } |
1063 | | |
1064 | | static void |
1065 | | adjust_i_magic (bfd *abfd, struct internal_exec *execp) |
1066 | 0 | { |
1067 | 0 | file_ptr pos = adata (abfd).exec_bytes_size; |
1068 | 0 | bfd_vma vma = 0; |
1069 | 0 | int pad; |
1070 | 0 | asection *text = obj_textsec (abfd); |
1071 | 0 | asection *data = obj_datasec (abfd); |
1072 | 0 | asection *bss = obj_bsssec (abfd); |
1073 | | |
1074 | | /* Text. */ |
1075 | 0 | text->filepos = pos; |
1076 | 0 | if (!text->user_set_vma) |
1077 | 0 | text->vma = vma; |
1078 | 0 | else |
1079 | 0 | vma = text->vma; |
1080 | 0 | pos += execp->a_text; |
1081 | | |
1082 | | /* Data. */ |
1083 | 0 | data->filepos = pos; |
1084 | 0 | if (!data->user_set_vma) |
1085 | 0 | data->vma = 0; |
1086 | 0 | vma = data->vma; |
1087 | | |
1088 | | /* Since BSS follows data immediately, see if it needs alignment. */ |
1089 | 0 | vma += data->size; |
1090 | 0 | pad = align_power (vma, bss->alignment_power) - vma; |
1091 | 0 | execp->a_data = data->size + pad; |
1092 | 0 | pos += execp->a_data; |
1093 | | |
1094 | | /* BSS. */ |
1095 | 0 | if (!bss->user_set_vma) |
1096 | 0 | bss->vma = vma; |
1097 | 0 | else |
1098 | 0 | vma = bss->vma; |
1099 | | |
1100 | | /* Fix up exec header. */ |
1101 | 0 | execp->a_bss = bss->size; |
1102 | 0 | N_SET_MAGIC (execp, IMAGIC); |
1103 | 0 | } |
1104 | | |
1105 | | bool |
1106 | | NAME (aout, adjust_sizes_and_vmas) (bfd *abfd) |
1107 | 0 | { |
1108 | 0 | struct internal_exec *execp = exec_hdr (abfd); |
1109 | |
|
1110 | 0 | if (! NAME (aout, make_sections) (abfd)) |
1111 | 0 | return false; |
1112 | | |
1113 | 0 | if (adata (abfd).magic != undecided_magic) |
1114 | 0 | return true; |
1115 | | |
1116 | 0 | execp->a_text = align_power (obj_textsec (abfd)->size, |
1117 | 0 | obj_textsec (abfd)->alignment_power); |
1118 | | |
1119 | | /* Rule (heuristic) for when to pad to a new page. Note that there |
1120 | | are (at least) two ways demand-paged (ZMAGIC) files have been |
1121 | | handled. Most Berkeley-based systems start the text segment at |
1122 | | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text |
1123 | | segment right after the exec header; the latter is counted in the |
1124 | | text segment size, and is paged in by the kernel with the rest of |
1125 | | the text. */ |
1126 | | |
1127 | | /* This perhaps isn't the right way to do this, but made it simpler for me |
1128 | | to understand enough to implement it. Better would probably be to go |
1129 | | right from BFD flags to alignment/positioning characteristics. But the |
1130 | | old code was sloppy enough about handling the flags, and had enough |
1131 | | other magic, that it was a little hard for me to understand. I think |
1132 | | I understand it better now, but I haven't time to do the cleanup this |
1133 | | minute. */ |
1134 | |
|
1135 | 0 | if (separate_i_d) |
1136 | 0 | adata (abfd).magic = i_magic; |
1137 | 0 | else if (abfd->flags & WP_TEXT) |
1138 | 0 | adata (abfd).magic = n_magic; |
1139 | 0 | else |
1140 | 0 | adata (abfd).magic = o_magic; |
1141 | |
|
1142 | | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ |
1143 | | #if __GNUC__ >= 2 |
1144 | | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", |
1145 | | ({ char *str; |
1146 | | switch (adata (abfd).magic) |
1147 | | { |
1148 | | case n_magic: str = "NMAGIC"; break; |
1149 | | case o_magic: str = "OMAGIC"; break; |
1150 | | case i_magic: str = "IMAGIC"; break; |
1151 | | case z_magic: str = "ZMAGIC"; break; |
1152 | | default: abort (); |
1153 | | } |
1154 | | str; |
1155 | | }), |
1156 | | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
1157 | | obj_textsec (abfd)->alignment_power, |
1158 | | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
1159 | | obj_datasec (abfd)->alignment_power, |
1160 | | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size, |
1161 | | obj_bsssec (abfd)->alignment_power); |
1162 | | #endif |
1163 | | #endif |
1164 | |
|
1165 | 0 | switch (adata (abfd).magic) |
1166 | 0 | { |
1167 | 0 | case o_magic: |
1168 | 0 | adjust_o_magic (abfd, execp); |
1169 | 0 | break; |
1170 | 0 | case z_magic: |
1171 | 0 | adjust_z_magic (abfd, execp); |
1172 | 0 | break; |
1173 | 0 | case n_magic: |
1174 | 0 | adjust_n_magic (abfd, execp); |
1175 | 0 | break; |
1176 | 0 | case i_magic: |
1177 | 0 | adjust_i_magic (abfd, execp); |
1178 | 0 | break; |
1179 | 0 | default: |
1180 | 0 | abort (); |
1181 | 0 | } |
1182 | | |
1183 | | #ifdef BFD_AOUT_DEBUG |
1184 | | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", |
1185 | | obj_textsec (abfd)->vma, execp->a_text, |
1186 | | obj_textsec (abfd)->filepos, |
1187 | | obj_datasec (abfd)->vma, execp->a_data, |
1188 | | obj_datasec (abfd)->filepos, |
1189 | | obj_bsssec (abfd)->vma, execp->a_bss); |
1190 | | #endif |
1191 | | |
1192 | 0 | return true; |
1193 | 0 | } |
1194 | | |
1195 | | /* Called by the BFD in response to a bfd_make_section request. */ |
1196 | | |
1197 | | bool |
1198 | | NAME (aout, new_section_hook) (bfd *abfd, asection *newsect) |
1199 | 59.9k | { |
1200 | | /* Align to double at least. */ |
1201 | 59.9k | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; |
1202 | | |
1203 | 59.9k | if (bfd_get_format (abfd) == bfd_object) |
1204 | 59.9k | { |
1205 | 59.9k | if (obj_textsec (abfd) == NULL |
1206 | 59.9k | && !strcmp (newsect->name, ".text")) |
1207 | 19.9k | { |
1208 | 19.9k | obj_textsec(abfd)= newsect; |
1209 | 19.9k | newsect->target_index = N_TEXT; |
1210 | 19.9k | } |
1211 | 39.9k | else if (obj_datasec (abfd) == NULL |
1212 | 39.9k | && !strcmp (newsect->name, ".data")) |
1213 | 19.9k | { |
1214 | 19.9k | obj_datasec (abfd) = newsect; |
1215 | 19.9k | newsect->target_index = N_DATA; |
1216 | 19.9k | } |
1217 | 19.9k | else if (obj_bsssec (abfd) == NULL |
1218 | 19.9k | && !strcmp (newsect->name, ".bss")) |
1219 | 19.9k | { |
1220 | 19.9k | obj_bsssec (abfd) = newsect; |
1221 | 19.9k | newsect->target_index = N_BSS; |
1222 | 19.9k | } |
1223 | 59.9k | } |
1224 | | |
1225 | | /* We allow more than three sections internally. */ |
1226 | 59.9k | return _bfd_generic_new_section_hook (abfd, newsect); |
1227 | 59.9k | } |
1228 | | |
1229 | | bool |
1230 | | NAME (aout, set_section_contents) (bfd *abfd, |
1231 | | sec_ptr section, |
1232 | | const void * location, |
1233 | | file_ptr offset, |
1234 | | bfd_size_type count) |
1235 | 0 | { |
1236 | 0 | if (! abfd->output_has_begun) |
1237 | 0 | { |
1238 | 0 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
1239 | 0 | return false; |
1240 | 0 | } |
1241 | | |
1242 | 0 | if (section == obj_bsssec (abfd)) |
1243 | 0 | { |
1244 | 0 | bfd_set_error (bfd_error_no_contents); |
1245 | 0 | return false; |
1246 | 0 | } |
1247 | | |
1248 | 0 | if (section != obj_textsec (abfd) |
1249 | 0 | && section != obj_datasec (abfd)) |
1250 | 0 | { |
1251 | 0 | _bfd_error_handler |
1252 | | /* xgettext:c-format */ |
1253 | 0 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
1254 | 0 | abfd, section); |
1255 | 0 | bfd_set_error (bfd_error_nonrepresentable_section); |
1256 | 0 | return false; |
1257 | 0 | } |
1258 | | |
1259 | 0 | if (count != 0) |
1260 | 0 | { |
1261 | 0 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 |
1262 | 0 | || bfd_write (location, count, abfd) != count) |
1263 | 0 | return false; |
1264 | 0 | } |
1265 | | |
1266 | 0 | return true; |
1267 | 0 | } |
1268 | | |
1269 | | /* Read the external symbols from an a.out file. */ |
1270 | | |
1271 | | static bool |
1272 | | aout_get_external_symbols (bfd *abfd) |
1273 | 579 | { |
1274 | 579 | if (obj_aout_external_syms (abfd) == NULL) |
1275 | 471 | { |
1276 | 471 | bfd_size_type count; |
1277 | 471 | struct external_nlist *syms = NULL; |
1278 | 471 | bfd_size_type amt = exec_hdr (abfd)->a_syms; |
1279 | | |
1280 | 471 | count = amt / EXTERNAL_NLIST_SIZE; |
1281 | | |
1282 | | /* PR 17512: file: 011f5a08. */ |
1283 | 471 | if (count == 0) |
1284 | 11 | return true; |
1285 | | |
1286 | | /* We allocate using malloc to make the values easy to free |
1287 | | later on. If we put them on the objalloc it might not be |
1288 | | possible to free them. */ |
1289 | 460 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
1290 | 0 | return false; |
1291 | 460 | syms = _bfd_malloc_and_read (abfd, amt, amt); |
1292 | 460 | if (syms == NULL) |
1293 | 186 | return false; |
1294 | | |
1295 | 274 | obj_aout_external_syms (abfd) = syms; |
1296 | 274 | obj_aout_external_sym_count (abfd) = count; |
1297 | 274 | } |
1298 | | |
1299 | 382 | if (obj_aout_external_strings (abfd) == NULL |
1300 | 382 | && exec_hdr (abfd)->a_syms != 0) |
1301 | 274 | { |
1302 | 274 | unsigned char string_chars[BYTES_IN_LONG]; |
1303 | 274 | bfd_size_type stringsize; |
1304 | 274 | char *strings; |
1305 | 274 | bfd_size_type amt = BYTES_IN_LONG; |
1306 | | |
1307 | | /* Get the size of the strings. */ |
1308 | 274 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 |
1309 | 274 | || bfd_read (string_chars, amt, abfd) != amt) |
1310 | 3 | return false; |
1311 | 271 | stringsize = H_GET_32 (abfd, string_chars); |
1312 | 271 | if (stringsize == 0) |
1313 | 119 | stringsize = 1; |
1314 | 152 | else if (stringsize + 1 < BYTES_IN_LONG + 1 |
1315 | 152 | || (size_t) stringsize != stringsize) |
1316 | 3 | { |
1317 | 3 | bfd_set_error (bfd_error_bad_value); |
1318 | 3 | return false; |
1319 | 3 | } |
1320 | | |
1321 | 268 | strings = (char *) bfd_malloc (stringsize + 1); |
1322 | 268 | if (strings == NULL) |
1323 | 0 | return false; |
1324 | | |
1325 | 268 | if (stringsize >= BYTES_IN_LONG) |
1326 | 149 | { |
1327 | 149 | amt = stringsize - BYTES_IN_LONG; |
1328 | 149 | if (bfd_read (strings + BYTES_IN_LONG, amt, abfd) != amt) |
1329 | 77 | { |
1330 | 77 | free (strings); |
1331 | 77 | return false; |
1332 | 77 | } |
1333 | 149 | } |
1334 | | |
1335 | | /* Ensure that a zero index yields an empty string. */ |
1336 | 191 | if (stringsize >= BYTES_IN_WORD) |
1337 | 72 | memset (strings, 0, BYTES_IN_LONG); |
1338 | | |
1339 | | /* Ensure that the string buffer is NUL terminated. */ |
1340 | 191 | strings[stringsize] = 0; |
1341 | | |
1342 | 191 | obj_aout_external_strings (abfd) = strings; |
1343 | 191 | obj_aout_external_string_size (abfd) = stringsize; |
1344 | 191 | } |
1345 | | |
1346 | 299 | return true; |
1347 | 382 | } |
1348 | | |
1349 | | /* Translate an a.out symbol into a BFD symbol. The desc, other, type |
1350 | | and symbol->value fields of CACHE_PTR will be set from the a.out |
1351 | | nlist structure. This function is responsible for setting |
1352 | | symbol->flags and symbol->section, and adjusting symbol->value. */ |
1353 | | |
1354 | | static bool |
1355 | | translate_from_native_sym_flags (bfd *abfd, |
1356 | | aout_symbol_type *cache_ptr) |
1357 | 43.3k | { |
1358 | 43.3k | flagword visible; |
1359 | | |
1360 | 43.3k | if (is_stab (cache_ptr->type, cache_ptr->symbol.name)) |
1361 | 327 | { |
1362 | 327 | asection *sec; |
1363 | | |
1364 | | /* This is a debugging symbol. */ |
1365 | 327 | cache_ptr->symbol.flags = BSF_DEBUGGING; |
1366 | | |
1367 | | /* Work out the symbol section. */ |
1368 | 327 | switch (cache_ptr->type) |
1369 | 327 | { |
1370 | 58 | case N_SO: |
1371 | 68 | case N_SOL: |
1372 | 70 | case N_FUN: |
1373 | 86 | case N_ENTRY: |
1374 | 112 | case N_SLINE: |
1375 | 112 | case N_FN: |
1376 | 112 | sec = obj_textsec (abfd); |
1377 | 112 | break; |
1378 | 27 | case N_STSYM: |
1379 | 50 | case N_DSLINE: |
1380 | 50 | sec = obj_datasec (abfd); |
1381 | 50 | break; |
1382 | 19 | case N_LCSYM: |
1383 | 41 | case N_BSLINE: |
1384 | 41 | sec = obj_bsssec (abfd); |
1385 | 41 | break; |
1386 | 124 | default: |
1387 | 124 | sec = bfd_abs_section_ptr; |
1388 | 124 | break; |
1389 | 327 | } |
1390 | | |
1391 | 327 | cache_ptr->symbol.section = sec; |
1392 | 327 | cache_ptr->symbol.value -= sec->vma; |
1393 | | |
1394 | 327 | return true; |
1395 | 327 | } |
1396 | | |
1397 | | /* Get the default visibility. This does not apply to all types, so |
1398 | | we just hold it in a local variable to use if wanted. */ |
1399 | 42.9k | if ((cache_ptr->type & N_EXT) == 0) |
1400 | 42.7k | visible = BSF_LOCAL; |
1401 | 276 | else |
1402 | 276 | visible = BSF_GLOBAL; |
1403 | | |
1404 | 42.9k | switch (cache_ptr->type) |
1405 | 42.9k | { |
1406 | 42.4k | default: |
1407 | 42.5k | case N_ABS: case N_ABS | N_EXT: |
1408 | 42.5k | cache_ptr->symbol.section = bfd_abs_section_ptr; |
1409 | 42.5k | cache_ptr->symbol.flags = visible; |
1410 | 42.5k | break; |
1411 | | |
1412 | 94 | case N_UNDF | N_EXT: |
1413 | 94 | if (cache_ptr->symbol.value != 0) |
1414 | 43 | { |
1415 | | /* This is a common symbol. */ |
1416 | 43 | cache_ptr->symbol.flags = BSF_GLOBAL; |
1417 | 43 | cache_ptr->symbol.section = bfd_com_section_ptr; |
1418 | 43 | } |
1419 | 51 | else |
1420 | 51 | { |
1421 | 51 | cache_ptr->symbol.flags = 0; |
1422 | 51 | cache_ptr->symbol.section = bfd_und_section_ptr; |
1423 | 51 | } |
1424 | 94 | break; |
1425 | | |
1426 | 158 | case N_TEXT: case N_TEXT | N_EXT: |
1427 | 158 | cache_ptr->symbol.section = obj_textsec (abfd); |
1428 | 158 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; |
1429 | 158 | cache_ptr->symbol.flags = visible; |
1430 | 158 | break; |
1431 | | |
1432 | 131 | case N_DATA: case N_DATA | N_EXT: |
1433 | 131 | cache_ptr->symbol.section = obj_datasec (abfd); |
1434 | 131 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; |
1435 | 131 | cache_ptr->symbol.flags = visible; |
1436 | 131 | break; |
1437 | | |
1438 | 76 | case N_BSS: case N_BSS | N_EXT: |
1439 | 76 | cache_ptr->symbol.section = obj_bsssec (abfd); |
1440 | 76 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; |
1441 | 76 | cache_ptr->symbol.flags = visible; |
1442 | 76 | break; |
1443 | 42.9k | } |
1444 | | |
1445 | 42.9k | return true; |
1446 | 42.9k | } |
1447 | | |
1448 | | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ |
1449 | | |
1450 | | static bool |
1451 | | translate_to_native_sym_flags (bfd *abfd, |
1452 | | asymbol *cache_ptr, |
1453 | | struct external_nlist *sym_pointer) |
1454 | 0 | { |
1455 | 0 | bfd_vma value = cache_ptr->value; |
1456 | 0 | asection *sec; |
1457 | 0 | bfd_vma off; |
1458 | 0 | const char *name = cache_ptr->name != NULL ? cache_ptr->name : "*unknown*"; |
1459 | | |
1460 | | /* Mask out any existing type bits in case copying from one section |
1461 | | to another. */ |
1462 | 0 | if (!is_stab (sym_pointer->e_type[0], name)) |
1463 | 0 | sym_pointer->e_type[0] &= ~N_TYPE; |
1464 | |
|
1465 | 0 | sec = bfd_asymbol_section (cache_ptr); |
1466 | 0 | off = 0; |
1467 | |
|
1468 | 0 | if (sec == NULL) |
1469 | 0 | { |
1470 | | /* This case occurs, e.g., for the *DEBUG* section of a COFF |
1471 | | file. */ |
1472 | 0 | _bfd_error_handler |
1473 | | /* xgettext:c-format */ |
1474 | 0 | (_("%pB: can not represent section for symbol `%s' in a.out object file format"), |
1475 | 0 | abfd, name); |
1476 | 0 | bfd_set_error (bfd_error_nonrepresentable_section); |
1477 | 0 | return false; |
1478 | 0 | } |
1479 | | |
1480 | 0 | if (sec->output_section != NULL) |
1481 | 0 | { |
1482 | 0 | off = sec->output_offset; |
1483 | 0 | sec = sec->output_section; |
1484 | 0 | } |
1485 | |
|
1486 | 0 | if (bfd_is_abs_section (sec)) |
1487 | 0 | sym_pointer->e_type[0] |= N_ABS; |
1488 | 0 | else if (sec == obj_textsec (abfd)) |
1489 | 0 | sym_pointer->e_type[0] |= N_TEXT; |
1490 | 0 | else if (sec == obj_datasec (abfd)) |
1491 | 0 | sym_pointer->e_type[0] |= N_DATA; |
1492 | 0 | else if (sec == obj_bsssec (abfd)) |
1493 | 0 | sym_pointer->e_type[0] |= N_BSS; |
1494 | 0 | else if (bfd_is_und_section (sec)) |
1495 | 0 | sym_pointer->e_type[0] = N_UNDF | N_EXT; |
1496 | 0 | else if (bfd_is_com_section (sec)) |
1497 | 0 | sym_pointer->e_type[0] = N_UNDF | N_EXT; |
1498 | 0 | else |
1499 | 0 | { |
1500 | 0 | _bfd_error_handler |
1501 | | /* xgettext:c-format */ |
1502 | 0 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
1503 | 0 | abfd, sec); |
1504 | 0 | bfd_set_error (bfd_error_nonrepresentable_section); |
1505 | 0 | return false; |
1506 | 0 | } |
1507 | | |
1508 | | /* Turn the symbol from section relative to absolute again */ |
1509 | 0 | value += sec->vma + off; |
1510 | |
|
1511 | 0 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) |
1512 | 0 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; |
1513 | 0 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) |
1514 | 0 | sym_pointer->e_type[0] |= N_EXT; |
1515 | |
|
1516 | 0 | PUT_WORD(abfd, value, sym_pointer->e_value); |
1517 | |
|
1518 | 0 | return true; |
1519 | 0 | } |
1520 | | |
1521 | | /* Native-level interface to symbols. */ |
1522 | | |
1523 | | asymbol * |
1524 | | NAME (aout, make_empty_symbol) (bfd *abfd) |
1525 | 60.3k | { |
1526 | 60.3k | size_t amt = sizeof (aout_symbol_type); |
1527 | 60.3k | aout_symbol_type *new_symbol_type = bfd_zalloc (abfd, amt); |
1528 | | |
1529 | 60.3k | if (!new_symbol_type) |
1530 | 0 | return NULL; |
1531 | 60.3k | new_symbol_type->symbol.the_bfd = abfd; |
1532 | | |
1533 | 60.3k | return &new_symbol_type->symbol; |
1534 | 60.3k | } |
1535 | | |
1536 | | /* Translate a set of external symbols into internal symbols. */ |
1537 | | |
1538 | | bool |
1539 | | NAME (aout, translate_symbol_table) (bfd *abfd, |
1540 | | aout_symbol_type *in, |
1541 | | struct external_nlist *ext, |
1542 | | bfd_size_type count, |
1543 | | char *str, |
1544 | | bfd_size_type strsize, |
1545 | | bool dynamic) |
1546 | 199 | { |
1547 | 199 | struct external_nlist *ext_end; |
1548 | | |
1549 | 199 | ext_end = ext + count; |
1550 | 43.5k | for (; ext < ext_end; ext++, in++) |
1551 | 43.3k | { |
1552 | 43.3k | bfd_vma x; |
1553 | 43.3k | int ovly; |
1554 | | |
1555 | 43.3k | x = GET_WORD (abfd, ext->e_strx); |
1556 | 43.3k | in->symbol.the_bfd = abfd; |
1557 | | |
1558 | | /* For the normal symbols, the zero index points at the number |
1559 | | of bytes in the string table but is to be interpreted as the |
1560 | | null string. For the dynamic symbols, the number of bytes in |
1561 | | the string table is stored in the __DYNAMIC structure and the |
1562 | | zero index points at an actual string. */ |
1563 | 43.3k | if (x == 0 && ! dynamic) |
1564 | 43.0k | in->symbol.name = ""; |
1565 | 363 | else if (x < strsize) |
1566 | 321 | in->symbol.name = str + x; |
1567 | 42 | else |
1568 | 42 | { |
1569 | 42 | _bfd_error_handler |
1570 | 42 | (_("%pB: invalid string offset %" PRIu64 " >= %" PRIu64), |
1571 | 42 | abfd, (uint64_t) x, (uint64_t) strsize); |
1572 | 42 | bfd_set_error (bfd_error_bad_value); |
1573 | 42 | return false; |
1574 | 42 | } |
1575 | | |
1576 | 43.3k | ovly = H_GET_8 (abfd, ext->e_ovly); |
1577 | 43.3k | if (ovly != 0) |
1578 | 13 | { |
1579 | 13 | _bfd_error_handler |
1580 | 13 | (_("%pB: symbol indicates overlay (not supported)"), abfd); |
1581 | 13 | bfd_set_error (bfd_error_bad_value); |
1582 | 13 | return false; |
1583 | 13 | } |
1584 | | |
1585 | 43.3k | in->symbol.value = GET_WORD (abfd, ext->e_value); |
1586 | | /* e_desc is zero for normal symbols but for .stab symbols it |
1587 | | carries the desc field in our extended 2.11BSD format. */ |
1588 | 43.3k | in->desc = H_GET_16 (abfd, ext->e_desc); |
1589 | 43.3k | in->other = 0; |
1590 | 43.3k | in->type = H_GET_8 (abfd, ext->e_type); |
1591 | 43.3k | in->symbol.udata.p = NULL; |
1592 | | |
1593 | 43.3k | if (! translate_from_native_sym_flags (abfd, in)) |
1594 | 0 | return false; |
1595 | | |
1596 | 43.3k | if (dynamic) |
1597 | 0 | in->symbol.flags |= BSF_DYNAMIC; |
1598 | 43.3k | } |
1599 | | |
1600 | 144 | return true; |
1601 | 199 | } |
1602 | | |
1603 | | /* We read the symbols into a buffer, which is discarded when this |
1604 | | function exits. We read the strings into a buffer large enough to |
1605 | | hold them all plus all the cached symbol entries. */ |
1606 | | |
1607 | | bool |
1608 | | NAME (aout, slurp_symbol_table) (bfd *abfd) |
1609 | 665 | { |
1610 | 665 | struct external_nlist *old_external_syms; |
1611 | 665 | aout_symbol_type *cached; |
1612 | 665 | bfd_size_type cached_size; |
1613 | | |
1614 | | /* If there's no work to be done, don't do any. */ |
1615 | 665 | if (obj_aout_symbols (abfd) != NULL) |
1616 | 264 | return true; |
1617 | | |
1618 | 401 | old_external_syms = obj_aout_external_syms (abfd); |
1619 | | |
1620 | 401 | if (! aout_get_external_symbols (abfd)) |
1621 | 202 | return false; |
1622 | | |
1623 | 199 | cached_size = obj_aout_external_sym_count (abfd); |
1624 | 199 | cached_size *= sizeof (aout_symbol_type); |
1625 | 199 | cached = bfd_zmalloc (cached_size); |
1626 | 199 | if (cached == NULL && cached_size != 0) |
1627 | 0 | return false; |
1628 | | |
1629 | | /* Convert from external symbol information to internal. */ |
1630 | 199 | if (! (NAME (aout, translate_symbol_table) |
1631 | 199 | (abfd, cached, |
1632 | 199 | obj_aout_external_syms (abfd), |
1633 | 199 | obj_aout_external_sym_count (abfd), |
1634 | 199 | obj_aout_external_strings (abfd), |
1635 | 199 | obj_aout_external_string_size (abfd), |
1636 | 199 | false))) |
1637 | 55 | { |
1638 | 55 | free (cached); |
1639 | 55 | return false; |
1640 | 55 | } |
1641 | | |
1642 | 144 | abfd->symcount = obj_aout_external_sym_count (abfd); |
1643 | | |
1644 | 144 | obj_aout_symbols (abfd) = cached; |
1645 | | |
1646 | | /* It is very likely that anybody who calls this function will not |
1647 | | want the external symbol information, so if it was allocated |
1648 | | because of our call to aout_get_external_symbols, we free it up |
1649 | | right away to save space. */ |
1650 | 144 | if (old_external_syms == NULL |
1651 | 144 | && obj_aout_external_syms (abfd) != NULL) |
1652 | 38 | { |
1653 | 38 | free (obj_aout_external_syms (abfd)); |
1654 | 38 | obj_aout_external_syms (abfd) = NULL; |
1655 | 38 | } |
1656 | | |
1657 | 144 | return true; |
1658 | 199 | } |
1659 | | |
1660 | | /* We use a hash table when writing out symbols so that we only write |
1661 | | out a particular string once. This helps particularly when the |
1662 | | linker writes out stabs debugging entries, because each different |
1663 | | contributing object file tends to have many duplicate stabs |
1664 | | strings. |
1665 | | |
1666 | | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it |
1667 | | if BFD_TRADITIONAL_FORMAT is set. */ |
1668 | | |
1669 | | /* Get the index of a string in a strtab, adding it if it is not |
1670 | | already present. */ |
1671 | | |
1672 | | static inline bfd_size_type |
1673 | | add_to_stringtab (bfd *abfd, |
1674 | | struct bfd_strtab_hash *tab, |
1675 | | const char *str, |
1676 | | bool copy) |
1677 | 0 | { |
1678 | 0 | bool hash; |
1679 | 0 | bfd_size_type str_index; |
1680 | | |
1681 | | /* An index of 0 always means the empty string. */ |
1682 | 0 | if (str == 0 || *str == '\0') |
1683 | 0 | return 0; |
1684 | | |
1685 | | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx |
1686 | | doesn't understand a hashed string table. */ |
1687 | 0 | hash = true; |
1688 | 0 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
1689 | 0 | hash = false; |
1690 | |
|
1691 | 0 | str_index = _bfd_stringtab_add (tab, str, hash, copy); |
1692 | |
|
1693 | 0 | if (str_index != (bfd_size_type) -1) |
1694 | | /* Add BYTES_IN_LONG to the return value to account for the |
1695 | | space taken up by the string table size. */ |
1696 | 0 | str_index += BYTES_IN_LONG; |
1697 | |
|
1698 | 0 | return str_index; |
1699 | 0 | } |
1700 | | |
1701 | | /* Write out a strtab. ABFD is already at the right location in the |
1702 | | file. */ |
1703 | | |
1704 | | static bool |
1705 | | emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab) |
1706 | 0 | { |
1707 | 0 | bfd_byte buffer[BYTES_IN_LONG]; |
1708 | | |
1709 | | /* The string table starts with the size. */ |
1710 | 0 | H_PUT_32 (abfd, _bfd_stringtab_size (tab) + BYTES_IN_LONG, buffer); |
1711 | 0 | if (bfd_write (buffer, BYTES_IN_LONG, abfd) != BYTES_IN_LONG) |
1712 | 0 | return false; |
1713 | | |
1714 | 0 | return _bfd_stringtab_emit (abfd, tab); |
1715 | 0 | } |
1716 | | |
1717 | | bool |
1718 | | NAME (aout, write_syms) (bfd *abfd) |
1719 | 0 | { |
1720 | 0 | unsigned int count ; |
1721 | 0 | asymbol **generic = bfd_get_outsymbols (abfd); |
1722 | 0 | struct bfd_strtab_hash *strtab; |
1723 | |
|
1724 | 0 | strtab = _bfd_stringtab_init (); |
1725 | 0 | if (strtab == NULL) |
1726 | 0 | return false; |
1727 | | |
1728 | 0 | for (count = 0; count < bfd_get_symcount (abfd); count++) |
1729 | 0 | { |
1730 | 0 | asymbol *g = generic[count]; |
1731 | 0 | bfd_size_type indx; |
1732 | 0 | struct external_nlist nsp; |
1733 | |
|
1734 | 0 | indx = add_to_stringtab (abfd, strtab, g->name, false); |
1735 | 0 | if (indx == (bfd_size_type) -1) |
1736 | 0 | goto error_return; |
1737 | 0 | PUT_WORD (abfd, indx, nsp.e_strx); |
1738 | |
|
1739 | 0 | if (bfd_asymbol_flavour(g) == abfd->xvec->flavour) |
1740 | 0 | { |
1741 | 0 | H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc); |
1742 | 0 | H_PUT_8 (abfd, 0, nsp.e_ovly); |
1743 | 0 | H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type); |
1744 | 0 | } |
1745 | 0 | else |
1746 | 0 | { |
1747 | 0 | H_PUT_16 (abfd, 0, nsp.e_desc); |
1748 | 0 | H_PUT_8 (abfd, 0, nsp.e_ovly); |
1749 | 0 | H_PUT_8 (abfd, 0, nsp.e_type); |
1750 | 0 | } |
1751 | |
|
1752 | 0 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) |
1753 | 0 | goto error_return; |
1754 | | |
1755 | 0 | if (bfd_write (&nsp, EXTERNAL_NLIST_SIZE, abfd) != EXTERNAL_NLIST_SIZE) |
1756 | 0 | goto error_return; |
1757 | | |
1758 | | /* NB: `KEEPIT' currently overlays `udata.p', so set this only |
1759 | | here, at the end. */ |
1760 | 0 | g->KEEPIT = count; |
1761 | 0 | } |
1762 | | |
1763 | 0 | if (! emit_stringtab (abfd, strtab)) |
1764 | 0 | goto error_return; |
1765 | | |
1766 | 0 | _bfd_stringtab_free (strtab); |
1767 | |
|
1768 | 0 | return true; |
1769 | | |
1770 | 0 | error_return: |
1771 | 0 | _bfd_stringtab_free (strtab); |
1772 | 0 | return false; |
1773 | 0 | } |
1774 | | |
1775 | | |
1776 | | long |
1777 | | NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location) |
1778 | 204 | { |
1779 | 204 | unsigned int counter = 0; |
1780 | 204 | aout_symbol_type *symbase; |
1781 | | |
1782 | 204 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
1783 | 0 | return -1; |
1784 | | |
1785 | 51.1k | for (symbase = obj_aout_symbols (abfd); counter++ < bfd_get_symcount (abfd);) |
1786 | 50.9k | *(location++) = (asymbol *)(symbase++); |
1787 | 204 | *location++ =0; |
1788 | 204 | return bfd_get_symcount (abfd); |
1789 | 204 | } |
1790 | | |
1791 | | |
1792 | | /* Output extended relocation information to a file in target byte order. */ |
1793 | | |
1794 | | static void |
1795 | | pdp11_aout_swap_reloc_out (bfd *abfd, arelent *g, bfd_byte *natptr) |
1796 | 0 | { |
1797 | 0 | int r_index; |
1798 | 0 | int r_pcrel; |
1799 | 0 | int reloc_entry; |
1800 | 0 | int r_type; |
1801 | 0 | asymbol *sym = *(g->sym_ptr_ptr); |
1802 | 0 | asection *output_section = sym->section->output_section; |
1803 | |
|
1804 | 0 | if (g->addend != 0) |
1805 | 0 | fprintf (stderr, "BFD: can't do this reloc addend stuff\n"); |
1806 | |
|
1807 | 0 | r_pcrel = g->howto->pc_relative; |
1808 | |
|
1809 | 0 | if (bfd_is_abs_section (output_section)) |
1810 | 0 | r_type = RABS; |
1811 | 0 | else if (output_section == obj_textsec (abfd)) |
1812 | 0 | r_type = RTEXT; |
1813 | 0 | else if (output_section == obj_datasec (abfd)) |
1814 | 0 | r_type = RDATA; |
1815 | 0 | else if (output_section == obj_bsssec (abfd)) |
1816 | 0 | r_type = RBSS; |
1817 | 0 | else if (bfd_is_und_section (output_section)) |
1818 | 0 | r_type = REXT; |
1819 | 0 | else if (bfd_is_com_section (output_section)) |
1820 | 0 | r_type = REXT; |
1821 | 0 | else |
1822 | 0 | r_type = -1; |
1823 | |
|
1824 | 0 | BFD_ASSERT (r_type != -1); |
1825 | |
|
1826 | 0 | if (r_type == RABS) |
1827 | 0 | r_index = 0; |
1828 | 0 | else |
1829 | 0 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; |
1830 | |
|
1831 | 0 | reloc_entry = r_index << 4 | r_type | r_pcrel; |
1832 | |
|
1833 | 0 | PUT_WORD (abfd, reloc_entry, natptr); |
1834 | 0 | } |
1835 | | |
1836 | | /* BFD deals internally with all things based from the section they're |
1837 | | in. so, something in 10 bytes into a text section with a base of |
1838 | | 50 would have a symbol (.text+10) and know .text vma was 50. |
1839 | | |
1840 | | Aout keeps all it's symbols based from zero, so the symbol would |
1841 | | contain 60. This macro subs the base of each section from the value |
1842 | | to give the true offset from the section */ |
1843 | | |
1844 | | |
1845 | | #define MOVE_ADDRESS(ad) \ |
1846 | 40.2k | if (r_extern) \ |
1847 | 40.2k | { \ |
1848 | 876 | /* Undefined symbol. */ \ |
1849 | 876 | if (symbols != NULL && r_index < bfd_get_symcount (abfd)) \ |
1850 | 876 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ |
1851 | 876 | else \ |
1852 | 876 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ |
1853 | 876 | cache_ptr->addend = ad; \ |
1854 | 876 | } \ |
1855 | 40.2k | else \ |
1856 | 40.2k | { \ |
1857 | 39.3k | /* Defined, section relative. replace symbol with pointer to \ |
1858 | 39.3k | symbol which points to section. */ \ |
1859 | 39.3k | switch (r_index) \ |
1860 | 39.3k | { \ |
1861 | 288 | case N_TEXT: \ |
1862 | 301 | case N_TEXT | N_EXT: \ |
1863 | 301 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ |
1864 | 301 | cache_ptr->addend = ad - su->textsec->vma; \ |
1865 | 301 | break; \ |
1866 | 288 | case N_DATA: \ |
1867 | 99 | case N_DATA | N_EXT: \ |
1868 | 99 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ |
1869 | 99 | cache_ptr->addend = ad - su->datasec->vma; \ |
1870 | 99 | break; \ |
1871 | 191 | case N_BSS: \ |
1872 | 220 | case N_BSS | N_EXT: \ |
1873 | 220 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ |
1874 | 220 | cache_ptr->addend = ad - su->bsssec->vma; \ |
1875 | 220 | break; \ |
1876 | 21.5k | default: \ |
1877 | 38.7k | case N_ABS: \ |
1878 | 38.7k | case N_ABS | N_EXT: \ |
1879 | 38.7k | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ |
1880 | 38.7k | cache_ptr->addend = ad; \ |
1881 | 38.7k | break; \ |
1882 | 39.3k | } \ |
1883 | 39.3k | } |
1884 | | |
1885 | | static void |
1886 | | pdp11_aout_swap_reloc_in (bfd * abfd, |
1887 | | bfd_byte * bytes, |
1888 | | arelent * cache_ptr, |
1889 | | bfd_size_type offset, |
1890 | | asymbol ** symbols, |
1891 | | bfd_size_type symcount) |
1892 | 40.2k | { |
1893 | 40.2k | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
1894 | 40.2k | unsigned int r_index; |
1895 | 40.2k | int reloc_entry; |
1896 | 40.2k | int r_extern; |
1897 | 40.2k | int r_pcrel; |
1898 | | |
1899 | 40.2k | reloc_entry = GET_WORD (abfd, (void *) bytes); |
1900 | | |
1901 | 40.2k | r_pcrel = reloc_entry & RELFLG; |
1902 | | |
1903 | 40.2k | cache_ptr->address = offset; |
1904 | 40.2k | cache_ptr->howto = howto_table_pdp11 + (r_pcrel ? 1 : 0); |
1905 | | |
1906 | 40.2k | if ((reloc_entry & RTYPE) == RABS) |
1907 | 13.6k | r_index = N_ABS; |
1908 | 26.5k | else |
1909 | 26.5k | r_index = RINDEX (reloc_entry); |
1910 | | |
1911 | | /* r_extern reflects whether the symbol the reloc is against is |
1912 | | local or global. */ |
1913 | 40.2k | r_extern = (reloc_entry & RTYPE) == REXT; |
1914 | | |
1915 | 40.2k | if (r_extern && r_index >= symcount) |
1916 | 2.81k | { |
1917 | | /* We could arrange to return an error, but it might be useful |
1918 | | to see the file even if it is bad. FIXME: Of course this |
1919 | | means that objdump -r *doesn't* see the actual reloc, and |
1920 | | objcopy silently writes a different reloc. */ |
1921 | 2.81k | r_extern = 0; |
1922 | 2.81k | r_index = N_ABS; |
1923 | 2.81k | } |
1924 | | |
1925 | 40.2k | MOVE_ADDRESS(0); |
1926 | 40.2k | } |
1927 | | |
1928 | | /* Read and swap the relocs for a section. */ |
1929 | | |
1930 | | bool |
1931 | | NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) |
1932 | 276 | { |
1933 | 276 | bfd_byte *rptr; |
1934 | 276 | bfd_size_type count; |
1935 | 276 | bfd_size_type reloc_size; |
1936 | 276 | void * relocs; |
1937 | 276 | arelent *reloc_cache; |
1938 | 276 | size_t each_size; |
1939 | 276 | unsigned int counter = 0; |
1940 | 276 | arelent *cache_ptr; |
1941 | | |
1942 | 276 | if (asect->relocation) |
1943 | 0 | return true; |
1944 | | |
1945 | 276 | if (asect->flags & SEC_CONSTRUCTOR) |
1946 | 0 | return true; |
1947 | | |
1948 | 276 | if (asect == obj_datasec (abfd)) |
1949 | 115 | reloc_size = exec_hdr(abfd)->a_drsize; |
1950 | 161 | else if (asect == obj_textsec (abfd)) |
1951 | 161 | reloc_size = exec_hdr(abfd)->a_trsize; |
1952 | 0 | else if (asect == obj_bsssec (abfd)) |
1953 | 0 | reloc_size = 0; |
1954 | 0 | else |
1955 | 0 | { |
1956 | 0 | bfd_set_error (bfd_error_invalid_operation); |
1957 | 0 | return false; |
1958 | 0 | } |
1959 | | |
1960 | 276 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
1961 | 0 | return false; |
1962 | 276 | relocs = _bfd_malloc_and_read (abfd, reloc_size, reloc_size); |
1963 | 276 | if (relocs == NULL && reloc_size != 0) |
1964 | 108 | return false; |
1965 | | |
1966 | 168 | each_size = obj_reloc_entry_size (abfd); |
1967 | 168 | count = reloc_size / each_size; |
1968 | | |
1969 | | /* Count the number of NON-ZERO relocs, this is the count we want. */ |
1970 | 168 | { |
1971 | 168 | unsigned int real_count = 0; |
1972 | | |
1973 | 62.0k | for (counter = 0; counter < count; counter++) |
1974 | 61.8k | { |
1975 | 61.8k | int x; |
1976 | | |
1977 | 61.8k | x = GET_WORD (abfd, (char *) relocs + each_size * counter); |
1978 | 61.8k | if (x != 0) |
1979 | 40.2k | real_count++; |
1980 | 61.8k | } |
1981 | | |
1982 | 168 | count = real_count; |
1983 | 168 | } |
1984 | | |
1985 | 168 | reloc_cache = bfd_zmalloc (count * sizeof (arelent)); |
1986 | 168 | if (reloc_cache == NULL && count != 0) |
1987 | 0 | return false; |
1988 | | |
1989 | 168 | cache_ptr = reloc_cache; |
1990 | | |
1991 | 168 | rptr = relocs; |
1992 | 168 | for (counter = 0; |
1993 | 40.3k | counter < count; |
1994 | 40.2k | counter++, rptr += RELOC_SIZE, cache_ptr++) |
1995 | 40.2k | { |
1996 | 61.5k | while (GET_WORD (abfd, (void *) rptr) == 0) |
1997 | 21.2k | { |
1998 | 21.2k | rptr += RELOC_SIZE; |
1999 | 21.2k | if ((char *) rptr >= (char *) relocs + reloc_size) |
2000 | 0 | goto done; |
2001 | 21.2k | } |
2002 | | |
2003 | 40.2k | pdp11_aout_swap_reloc_in (abfd, rptr, cache_ptr, |
2004 | 40.2k | (bfd_size_type) ((char *) rptr - (char *) relocs), |
2005 | 40.2k | symbols, |
2006 | 40.2k | (bfd_size_type) bfd_get_symcount (abfd)); |
2007 | 40.2k | } |
2008 | 168 | done: |
2009 | | /* Just in case, if rptr >= relocs + reloc_size should happen |
2010 | | too early. */ |
2011 | 168 | BFD_ASSERT (counter == count); |
2012 | | |
2013 | 168 | free (relocs); |
2014 | | |
2015 | 168 | asect->relocation = reloc_cache; |
2016 | 168 | asect->reloc_count = cache_ptr - reloc_cache; |
2017 | | |
2018 | 168 | return true; |
2019 | 168 | } |
2020 | | |
2021 | | /* Write out a relocation section into an object file. */ |
2022 | | |
2023 | | bool |
2024 | | NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section) |
2025 | 0 | { |
2026 | 0 | arelent **generic; |
2027 | 0 | unsigned char *native; |
2028 | 0 | unsigned int count = section->reloc_count; |
2029 | 0 | bfd_size_type natsize; |
2030 | |
|
2031 | 0 | natsize = section->size; |
2032 | 0 | native = bfd_zalloc (abfd, natsize); |
2033 | 0 | if (!native) |
2034 | 0 | return false; |
2035 | | |
2036 | 0 | generic = section->orelocation; |
2037 | 0 | if (generic != NULL) |
2038 | 0 | { |
2039 | 0 | while (count > 0) |
2040 | 0 | { |
2041 | 0 | bfd_byte *r; |
2042 | |
|
2043 | 0 | if ((*generic)->howto == NULL |
2044 | 0 | || (*generic)->sym_ptr_ptr == NULL) |
2045 | 0 | { |
2046 | 0 | bfd_set_error (bfd_error_invalid_operation); |
2047 | 0 | _bfd_error_handler (_("%pB: attempt to write out " |
2048 | 0 | "unknown reloc type"), abfd); |
2049 | 0 | bfd_release (abfd, native); |
2050 | 0 | return false; |
2051 | 0 | } |
2052 | 0 | r = native + (*generic)->address; |
2053 | 0 | pdp11_aout_swap_reloc_out (abfd, *generic, r); |
2054 | 0 | count--; |
2055 | 0 | generic++; |
2056 | 0 | } |
2057 | 0 | } |
2058 | | |
2059 | 0 | if (bfd_write (native, natsize, abfd) != natsize) |
2060 | 0 | { |
2061 | 0 | bfd_release (abfd, native); |
2062 | 0 | return false; |
2063 | 0 | } |
2064 | | |
2065 | 0 | bfd_release (abfd, native); |
2066 | 0 | return true; |
2067 | 0 | } |
2068 | | |
2069 | | /* This is stupid. This function should be a boolean predicate. */ |
2070 | | |
2071 | | long |
2072 | | NAME (aout, canonicalize_reloc) (bfd *abfd, |
2073 | | sec_ptr section, |
2074 | | arelent **relptr, |
2075 | | asymbol **symbols) |
2076 | 276 | { |
2077 | 276 | arelent *tblptr = section->relocation; |
2078 | 276 | unsigned int count; |
2079 | | |
2080 | 276 | if (section == obj_bsssec (abfd)) |
2081 | 0 | { |
2082 | 0 | *relptr = NULL; |
2083 | 0 | return 0; |
2084 | 0 | } |
2085 | | |
2086 | 276 | if (!(tblptr || NAME (aout, slurp_reloc_table)(abfd, section, symbols))) |
2087 | 108 | return -1; |
2088 | | |
2089 | 168 | if (section->flags & SEC_CONSTRUCTOR) |
2090 | 0 | { |
2091 | 0 | arelent_chain *chain = section->constructor_chain; |
2092 | |
|
2093 | 0 | for (count = 0; count < section->reloc_count; count ++) |
2094 | 0 | { |
2095 | 0 | *relptr ++ = &chain->relent; |
2096 | 0 | chain = chain->next; |
2097 | 0 | } |
2098 | 0 | } |
2099 | 168 | else |
2100 | 168 | { |
2101 | 168 | tblptr = section->relocation; |
2102 | | |
2103 | 40.3k | for (count = 0; count++ < section->reloc_count;) |
2104 | 40.2k | *relptr++ = tblptr++; |
2105 | 168 | } |
2106 | | |
2107 | 168 | *relptr = 0; |
2108 | | |
2109 | 168 | return section->reloc_count; |
2110 | 276 | } |
2111 | | |
2112 | | long |
2113 | | NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect) |
2114 | 322 | { |
2115 | 322 | size_t count, raw; |
2116 | | |
2117 | 322 | if (asect->flags & SEC_CONSTRUCTOR) |
2118 | 0 | count = asect->reloc_count; |
2119 | 322 | else if (asect == obj_datasec (abfd)) |
2120 | 143 | count = exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); |
2121 | 179 | else if (asect == obj_textsec (abfd)) |
2122 | 179 | count = exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); |
2123 | 0 | else if (asect == obj_bsssec (abfd)) |
2124 | 0 | count = 0; |
2125 | 0 | else |
2126 | 0 | { |
2127 | 0 | bfd_set_error (bfd_error_invalid_operation); |
2128 | 0 | return -1; |
2129 | 0 | } |
2130 | | |
2131 | 322 | if (count >= LONG_MAX / sizeof (arelent *) |
2132 | 322 | || _bfd_mul_overflow (count, obj_reloc_entry_size (abfd), &raw)) |
2133 | 0 | { |
2134 | 0 | bfd_set_error (bfd_error_file_too_big); |
2135 | 0 | return -1; |
2136 | 0 | } |
2137 | 322 | if (!bfd_write_p (abfd)) |
2138 | 322 | { |
2139 | 322 | ufile_ptr filesize = bfd_get_file_size (abfd); |
2140 | 322 | if (filesize != 0 && raw > filesize) |
2141 | 46 | { |
2142 | 46 | bfd_set_error (bfd_error_file_truncated); |
2143 | 46 | return -1; |
2144 | 46 | } |
2145 | 322 | } |
2146 | 276 | return (count + 1) * sizeof (arelent *); |
2147 | 322 | } |
2148 | | |
2149 | | |
2150 | | long |
2151 | | NAME (aout, get_symtab_upper_bound) (bfd *abfd) |
2152 | 461 | { |
2153 | 461 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
2154 | 257 | return -1; |
2155 | | |
2156 | 204 | return (bfd_get_symcount (abfd) + 1) * (sizeof (aout_symbol_type *)); |
2157 | 461 | } |
2158 | | |
2159 | | alent * |
2160 | | NAME (aout, get_lineno) (bfd * abfd ATTRIBUTE_UNUSED, |
2161 | | asymbol * symbol ATTRIBUTE_UNUSED) |
2162 | 0 | { |
2163 | 0 | return NULL; |
2164 | 0 | } |
2165 | | |
2166 | | void |
2167 | | NAME (aout, get_symbol_info) (bfd * abfd ATTRIBUTE_UNUSED, |
2168 | | asymbol *symbol, |
2169 | | symbol_info *ret) |
2170 | 16.8k | { |
2171 | 16.8k | bfd_symbol_info (symbol, ret); |
2172 | | |
2173 | 16.8k | if (ret->type == '?') |
2174 | 23 | { |
2175 | 23 | int type_code = aout_symbol(symbol)->type & 0xff; |
2176 | 23 | const char *stab_name = bfd_get_stab_name (type_code); |
2177 | 23 | static char buf[10]; |
2178 | | |
2179 | 23 | if (stab_name == NULL) |
2180 | 7 | { |
2181 | 7 | sprintf(buf, "(%d)", type_code); |
2182 | 7 | stab_name = buf; |
2183 | 7 | } |
2184 | 23 | ret->type = '-'; |
2185 | 23 | ret->stab_type = type_code; |
2186 | 23 | ret->stab_other = (unsigned) (aout_symbol(symbol)->other & 0xff); |
2187 | 23 | ret->stab_desc = (unsigned) (aout_symbol(symbol)->desc & 0xffff); |
2188 | 23 | ret->stab_name = stab_name; |
2189 | 23 | } |
2190 | 16.8k | } |
2191 | | |
2192 | | void |
2193 | | NAME (aout, print_symbol) (bfd * abfd, |
2194 | | void * afile, |
2195 | | asymbol *symbol, |
2196 | | bfd_print_symbol_type how) |
2197 | 0 | { |
2198 | 0 | FILE *file = (FILE *) afile; |
2199 | |
|
2200 | 0 | switch (how) |
2201 | 0 | { |
2202 | 0 | case bfd_print_symbol_name: |
2203 | 0 | if (symbol->name) |
2204 | 0 | fprintf(file,"%s", symbol->name); |
2205 | 0 | break; |
2206 | 0 | case bfd_print_symbol_more: |
2207 | 0 | fprintf(file,"%4x %2x %2x", |
2208 | 0 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), |
2209 | 0 | (unsigned) (aout_symbol (symbol)->other & 0xff), |
2210 | 0 | (unsigned) (aout_symbol (symbol)->type)); |
2211 | 0 | break; |
2212 | 0 | case bfd_print_symbol_all: |
2213 | 0 | { |
2214 | 0 | const char *section_name = symbol->section->name; |
2215 | |
|
2216 | 0 | bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
2217 | |
|
2218 | 0 | fprintf (file," %-5s %04x %02x %02x", |
2219 | 0 | section_name, |
2220 | 0 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), |
2221 | 0 | (unsigned) (aout_symbol (symbol)->other & 0xff), |
2222 | 0 | (unsigned) (aout_symbol (symbol)->type & 0xff)); |
2223 | 0 | if (symbol->name) |
2224 | 0 | fprintf(file," %s", symbol->name); |
2225 | 0 | } |
2226 | 0 | break; |
2227 | 0 | } |
2228 | 0 | } |
2229 | | |
2230 | | /* If we don't have to allocate more than 1MB to hold the generic |
2231 | | symbols, we use the generic minisymbol method: it's faster, since |
2232 | | it only translates the symbols once, not multiple times. */ |
2233 | 257k | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) |
2234 | | |
2235 | | /* Read minisymbols. For minisymbols, we use the unmodified a.out |
2236 | | symbols. The minisymbol_to_symbol function translates these into |
2237 | | BFD asymbol structures. */ |
2238 | | |
2239 | | long |
2240 | | NAME (aout, read_minisymbols) (bfd *abfd, |
2241 | | bool dynamic, |
2242 | | void * *minisymsp, |
2243 | | unsigned int *sizep) |
2244 | 178 | { |
2245 | 178 | if (dynamic) |
2246 | | /* We could handle the dynamic symbols here as well, but it's |
2247 | | easier to hand them off. */ |
2248 | 0 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); |
2249 | | |
2250 | 178 | if (! aout_get_external_symbols (abfd)) |
2251 | 67 | return -1; |
2252 | | |
2253 | 111 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) |
2254 | 111 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); |
2255 | | |
2256 | 0 | *minisymsp = (void *) obj_aout_external_syms (abfd); |
2257 | | |
2258 | | /* By passing the external symbols back from this routine, we are |
2259 | | giving up control over the memory block. Clear |
2260 | | obj_aout_external_syms, so that we do not try to free it |
2261 | | ourselves. */ |
2262 | 0 | obj_aout_external_syms (abfd) = NULL; |
2263 | |
|
2264 | 0 | *sizep = EXTERNAL_NLIST_SIZE; |
2265 | 0 | return obj_aout_external_sym_count (abfd); |
2266 | 111 | } |
2267 | | |
2268 | | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an |
2269 | | unmodified a.out symbol. The SYM argument is a structure returned |
2270 | | by bfd_make_empty_symbol, which we fill in here. */ |
2271 | | |
2272 | | asymbol * |
2273 | | NAME (aout, minisymbol_to_symbol) (bfd *abfd, |
2274 | | bool dynamic, |
2275 | | const void * minisym, |
2276 | | asymbol *sym) |
2277 | 257k | { |
2278 | 257k | if (dynamic |
2279 | 257k | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) |
2280 | 257k | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); |
2281 | | |
2282 | 0 | memset (sym, 0, sizeof (aout_symbol_type)); |
2283 | | |
2284 | | /* We call translate_symbol_table to translate a single symbol. */ |
2285 | 0 | if (! (NAME (aout, translate_symbol_table) |
2286 | 0 | (abfd, |
2287 | 0 | (aout_symbol_type *) sym, |
2288 | 0 | (struct external_nlist *) minisym, |
2289 | 0 | (bfd_size_type) 1, |
2290 | 0 | obj_aout_external_strings (abfd), |
2291 | 0 | obj_aout_external_string_size (abfd), |
2292 | 0 | false))) |
2293 | 0 | return NULL; |
2294 | | |
2295 | 0 | return sym; |
2296 | 0 | } |
2297 | | |
2298 | | /* Provided a BFD, a section and an offset into the section, calculate |
2299 | | and return the name of the source file and the line nearest to the |
2300 | | wanted location. */ |
2301 | | |
2302 | | bool |
2303 | | NAME (aout, find_nearest_line) (bfd *abfd, |
2304 | | asymbol **symbols, |
2305 | | asection *section, |
2306 | | bfd_vma offset, |
2307 | | const char **filename_ptr, |
2308 | | const char **functionname_ptr, |
2309 | | unsigned int *line_ptr, |
2310 | | unsigned int *discriminator_ptr) |
2311 | 189 | { |
2312 | | /* Run down the file looking for the filename, function and linenumber. */ |
2313 | 189 | asymbol **p; |
2314 | 189 | const char *directory_name = NULL; |
2315 | 189 | const char *main_file_name = NULL; |
2316 | 189 | const char *current_file_name = NULL; |
2317 | 189 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ |
2318 | 189 | bfd_vma low_line_vma = 0; |
2319 | 189 | bfd_vma low_func_vma = 0; |
2320 | 189 | asymbol *func = 0; |
2321 | 189 | size_t filelen, funclen; |
2322 | 189 | char *buf; |
2323 | | |
2324 | 189 | *filename_ptr = bfd_get_filename (abfd); |
2325 | 189 | *functionname_ptr = NULL; |
2326 | 189 | *line_ptr = 0; |
2327 | 189 | if (discriminator_ptr) |
2328 | 61 | *discriminator_ptr = 0; |
2329 | | |
2330 | 189 | if (symbols != NULL) |
2331 | 134 | { |
2332 | 1.10k | for (p = symbols; *p; p++) |
2333 | 1.00k | { |
2334 | 1.00k | aout_symbol_type *q = (aout_symbol_type *)(*p); |
2335 | 1.03k | next: |
2336 | 1.03k | switch (q->type) |
2337 | 1.03k | { |
2338 | 197 | case N_TEXT: |
2339 | | /* If this looks like a file name symbol, and it comes after |
2340 | | the line number we have found so far, but before the |
2341 | | offset, then we have probably not found the right line |
2342 | | number. */ |
2343 | 197 | if (q->symbol.value <= offset |
2344 | 197 | && ((q->symbol.value > low_line_vma |
2345 | 129 | && (line_file_name != NULL |
2346 | 100 | || *line_ptr != 0)) |
2347 | 129 | || (q->symbol.value > low_func_vma |
2348 | 88 | && func != NULL))) |
2349 | 54 | { |
2350 | 54 | const char * symname; |
2351 | | |
2352 | 54 | symname = q->symbol.name; |
2353 | | |
2354 | 54 | if (symname != NULL |
2355 | 54 | && strlen (symname) > 2 |
2356 | 54 | && strcmp (symname + strlen (symname) - 2, ".o") == 0) |
2357 | 13 | { |
2358 | 13 | if (q->symbol.value > low_line_vma) |
2359 | 10 | { |
2360 | 10 | *line_ptr = 0; |
2361 | 10 | line_file_name = NULL; |
2362 | 10 | } |
2363 | 13 | if (q->symbol.value > low_func_vma) |
2364 | 7 | func = NULL; |
2365 | 13 | } |
2366 | 54 | } |
2367 | 197 | break; |
2368 | | |
2369 | 45 | case N_SO: |
2370 | | /* If this symbol is less than the offset, but greater than |
2371 | | the line number we have found so far, then we have not |
2372 | | found the right line number. */ |
2373 | 45 | if (q->symbol.value <= offset) |
2374 | 34 | { |
2375 | 34 | if (q->symbol.value > low_line_vma) |
2376 | 22 | { |
2377 | 22 | *line_ptr = 0; |
2378 | 22 | line_file_name = NULL; |
2379 | 22 | } |
2380 | 34 | if (q->symbol.value > low_func_vma) |
2381 | 19 | func = NULL; |
2382 | 34 | } |
2383 | | |
2384 | 45 | main_file_name = current_file_name = q->symbol.name; |
2385 | | /* Look ahead to next symbol to check if that too is an N_SO. */ |
2386 | 45 | p++; |
2387 | 45 | if (*p == NULL) |
2388 | 17 | goto done; |
2389 | 28 | q = (aout_symbol_type *)(*p); |
2390 | 28 | if (q->type != (int) N_SO) |
2391 | 21 | goto next; |
2392 | | |
2393 | | /* Found a second N_SO First is directory; second is filename. */ |
2394 | 7 | directory_name = current_file_name; |
2395 | 7 | main_file_name = current_file_name = q->symbol.name; |
2396 | 7 | if (obj_textsec(abfd) != section) |
2397 | 7 | goto done; |
2398 | 0 | break; |
2399 | 5 | case N_SOL: |
2400 | 5 | current_file_name = q->symbol.name; |
2401 | 5 | break; |
2402 | | |
2403 | 8 | case N_SLINE: |
2404 | 34 | case N_DSLINE: |
2405 | 61 | case N_BSLINE: |
2406 | | /* We'll keep this if it resolves nearer than the one we have |
2407 | | already. */ |
2408 | 61 | if (q->symbol.value >= low_line_vma |
2409 | 61 | && q->symbol.value <= offset) |
2410 | 35 | { |
2411 | 35 | *line_ptr = q->desc; |
2412 | 35 | low_line_vma = q->symbol.value; |
2413 | 35 | line_file_name = current_file_name; |
2414 | 35 | } |
2415 | 61 | break; |
2416 | | |
2417 | 63 | case N_FUN: |
2418 | 63 | { |
2419 | | /* We'll keep this if it is nearer than the one we have already. */ |
2420 | 63 | if (q->symbol.value >= low_func_vma && |
2421 | 63 | q->symbol.value <= offset) |
2422 | 40 | { |
2423 | 40 | low_func_vma = q->symbol.value; |
2424 | 40 | func = (asymbol *) q; |
2425 | 40 | } |
2426 | 23 | else if (q->symbol.value > offset) |
2427 | 13 | goto done; |
2428 | 63 | } |
2429 | 50 | break; |
2430 | 1.03k | } |
2431 | 1.03k | } |
2432 | 134 | } |
2433 | | |
2434 | 189 | done: |
2435 | 189 | if (*line_ptr != 0) |
2436 | 21 | main_file_name = line_file_name; |
2437 | | |
2438 | 189 | if (main_file_name == NULL |
2439 | 189 | || main_file_name[0] == '/' |
2440 | 189 | || directory_name == NULL) |
2441 | 182 | filelen = 0; |
2442 | 7 | else |
2443 | 7 | filelen = strlen (directory_name) + strlen (main_file_name); |
2444 | 189 | if (func == NULL) |
2445 | 158 | funclen = 0; |
2446 | 31 | else |
2447 | 31 | funclen = strlen (bfd_asymbol_name (func)); |
2448 | | |
2449 | 189 | free (adata (abfd).line_buf); |
2450 | 189 | if (filelen + funclen == 0) |
2451 | 177 | adata (abfd).line_buf = buf = NULL; |
2452 | 12 | else |
2453 | 12 | { |
2454 | 12 | buf = bfd_malloc ((bfd_size_type) filelen + funclen + 3); |
2455 | 12 | adata (abfd).line_buf = buf; |
2456 | 12 | if (buf == NULL) |
2457 | 0 | return false; |
2458 | 12 | } |
2459 | | |
2460 | 189 | if (main_file_name != NULL) |
2461 | 36 | { |
2462 | 36 | if (main_file_name[0] == '/' || directory_name == NULL) |
2463 | 29 | *filename_ptr = main_file_name; |
2464 | 7 | else |
2465 | 7 | { |
2466 | 7 | if (buf == NULL) |
2467 | | /* PR binutils/20891: In a corrupt input file both |
2468 | | main_file_name and directory_name can be empty... */ |
2469 | 6 | * filename_ptr = NULL; |
2470 | 1 | else |
2471 | 1 | { |
2472 | 1 | snprintf (buf, filelen + 1, "%s%s", directory_name, |
2473 | 1 | main_file_name); |
2474 | 1 | *filename_ptr = buf; |
2475 | 1 | buf += filelen + 1; |
2476 | 1 | } |
2477 | 7 | } |
2478 | 36 | } |
2479 | | |
2480 | 189 | if (func) |
2481 | 31 | { |
2482 | 31 | const char *function = func->name; |
2483 | 31 | char *colon; |
2484 | | |
2485 | 31 | if (buf == NULL) |
2486 | 19 | { |
2487 | | /* PR binutils/20892: In a corrupt input file func can be empty. */ |
2488 | 19 | * functionname_ptr = NULL; |
2489 | 19 | return true; |
2490 | 19 | } |
2491 | | /* The caller expects a symbol name. We actually have a |
2492 | | function name, without the leading underscore. Put the |
2493 | | underscore back in, so that the caller gets a symbol name. */ |
2494 | 12 | if (bfd_get_symbol_leading_char (abfd) == '\0') |
2495 | 0 | strcpy (buf, function); |
2496 | 12 | else |
2497 | 12 | { |
2498 | 12 | buf[0] = bfd_get_symbol_leading_char (abfd); |
2499 | 12 | strcpy (buf + 1, function); |
2500 | 12 | } |
2501 | | |
2502 | | /* Have to remove : stuff. */ |
2503 | 12 | colon = strchr (buf, ':'); |
2504 | 12 | if (colon != NULL) |
2505 | 1 | *colon = '\0'; |
2506 | 12 | *functionname_ptr = buf; |
2507 | 12 | } |
2508 | | |
2509 | 170 | return true; |
2510 | 189 | } |
2511 | | |
2512 | | int |
2513 | | NAME (aout, sizeof_headers) (bfd *abfd, |
2514 | | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
2515 | 0 | { |
2516 | 0 | return adata (abfd).exec_bytes_size; |
2517 | 0 | } |
2518 | | |
2519 | | /* Throw away most malloc'd and alloc'd information for this BFD. */ |
2520 | | |
2521 | | bool |
2522 | | NAME (aout, bfd_free_cached_info) (bfd *abfd) |
2523 | 25.2k | { |
2524 | 25.2k | if ((bfd_get_format (abfd) == bfd_object |
2525 | 25.2k | || bfd_get_format (abfd) == bfd_core) |
2526 | 25.2k | && abfd->tdata.aout_data != NULL) |
2527 | 13.6k | { |
2528 | 95.7k | #define BFCI_FREE(x) do { free (x); x = NULL; } while (0) |
2529 | 13.6k | BFCI_FREE (adata (abfd).line_buf); |
2530 | 13.6k | BFCI_FREE (obj_aout_symbols (abfd)); |
2531 | 13.6k | BFCI_FREE (obj_aout_external_syms (abfd)); |
2532 | 13.6k | BFCI_FREE (obj_aout_external_strings (abfd)); |
2533 | 54.7k | for (asection *o = abfd->sections; o != NULL; o = o->next) |
2534 | 41.0k | BFCI_FREE (o->relocation); |
2535 | 13.6k | #undef BFCI_FREE |
2536 | 13.6k | } |
2537 | | |
2538 | 25.2k | return _bfd_generic_bfd_free_cached_info (abfd); |
2539 | 25.2k | } |
2540 | | |
2541 | | /* Routine to create an entry in an a.out link hash table. */ |
2542 | | |
2543 | | struct bfd_hash_entry * |
2544 | | NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry, |
2545 | | struct bfd_hash_table *table, |
2546 | | const char *string) |
2547 | 0 | { |
2548 | 0 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; |
2549 | | |
2550 | | /* Allocate the structure if it has not already been allocated by a |
2551 | | subclass. */ |
2552 | 0 | if (ret == NULL) |
2553 | 0 | ret = bfd_hash_allocate (table, sizeof (* ret)); |
2554 | 0 | if (ret == NULL) |
2555 | 0 | return NULL; |
2556 | | |
2557 | | /* Call the allocation method of the superclass. */ |
2558 | 0 | ret = (struct aout_link_hash_entry *) |
2559 | 0 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string); |
2560 | 0 | if (ret) |
2561 | 0 | { |
2562 | | /* Set local fields. */ |
2563 | 0 | ret->written = false; |
2564 | 0 | ret->indx = -1; |
2565 | 0 | } |
2566 | |
|
2567 | 0 | return (struct bfd_hash_entry *) ret; |
2568 | 0 | } |
2569 | | |
2570 | | /* Initialize an a.out link hash table. */ |
2571 | | |
2572 | | bool |
2573 | | NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table, |
2574 | | bfd *abfd, |
2575 | | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, |
2576 | | struct bfd_hash_table *, |
2577 | | const char *), |
2578 | | unsigned int entsize) |
2579 | 0 | { |
2580 | 0 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
2581 | 0 | } |
2582 | | |
2583 | | /* Create an a.out link hash table. */ |
2584 | | |
2585 | | struct bfd_link_hash_table * |
2586 | | NAME (aout, link_hash_table_create) (bfd *abfd) |
2587 | 0 | { |
2588 | 0 | struct aout_link_hash_table *ret; |
2589 | 0 | size_t amt = sizeof (struct aout_link_hash_table); |
2590 | |
|
2591 | 0 | ret = bfd_malloc (amt); |
2592 | 0 | if (ret == NULL) |
2593 | 0 | return NULL; |
2594 | 0 | if (! NAME (aout, link_hash_table_init) (ret, abfd, |
2595 | 0 | NAME (aout, link_hash_newfunc), |
2596 | 0 | sizeof (struct aout_link_hash_entry))) |
2597 | 0 | { |
2598 | 0 | free (ret); |
2599 | 0 | return NULL; |
2600 | 0 | } |
2601 | 0 | return &ret->root; |
2602 | 0 | } |
2603 | | |
2604 | | /* Free up the internal symbols read from an a.out file. */ |
2605 | | |
2606 | | static bool |
2607 | | aout_link_free_symbols (bfd *abfd) |
2608 | 0 | { |
2609 | 0 | if (obj_aout_external_syms (abfd) != NULL) |
2610 | 0 | { |
2611 | 0 | free ((void *) obj_aout_external_syms (abfd)); |
2612 | 0 | obj_aout_external_syms (abfd) = NULL; |
2613 | 0 | } |
2614 | |
|
2615 | 0 | if (obj_aout_external_strings (abfd) != NULL) |
2616 | 0 | { |
2617 | 0 | free ((void *) obj_aout_external_strings (abfd)); |
2618 | 0 | obj_aout_external_strings (abfd) = NULL; |
2619 | 0 | } |
2620 | 0 | return true; |
2621 | 0 | } |
2622 | | |
2623 | | /* Given an a.out BFD, add symbols to the global hash table as |
2624 | | appropriate. */ |
2625 | | |
2626 | | bool |
2627 | | NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info) |
2628 | 0 | { |
2629 | 0 | switch (bfd_get_format (abfd)) |
2630 | 0 | { |
2631 | 0 | case bfd_object: |
2632 | 0 | return aout_link_add_object_symbols (abfd, info); |
2633 | 0 | case bfd_archive: |
2634 | 0 | return _bfd_generic_link_add_archive_symbols |
2635 | 0 | (abfd, info, aout_link_check_archive_element); |
2636 | 0 | default: |
2637 | 0 | bfd_set_error (bfd_error_wrong_format); |
2638 | 0 | return false; |
2639 | 0 | } |
2640 | 0 | } |
2641 | | |
2642 | | /* Add symbols from an a.out object file. */ |
2643 | | |
2644 | | static bool |
2645 | | aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
2646 | 0 | { |
2647 | 0 | if (! aout_get_external_symbols (abfd)) |
2648 | 0 | return false; |
2649 | 0 | if (! aout_link_add_symbols (abfd, info)) |
2650 | 0 | return false; |
2651 | 0 | if (! info->keep_memory) |
2652 | 0 | { |
2653 | 0 | if (! aout_link_free_symbols (abfd)) |
2654 | 0 | return false; |
2655 | 0 | } |
2656 | 0 | return true; |
2657 | 0 | } |
2658 | | |
2659 | | /* Look through the internal symbols to see if this object file should |
2660 | | be included in the link. We should include this object file if it |
2661 | | defines any symbols which are currently undefined. If this object |
2662 | | file defines a common symbol, then we may adjust the size of the |
2663 | | known symbol but we do not include the object file in the link |
2664 | | (unless there is some other reason to include it). */ |
2665 | | |
2666 | | static bool |
2667 | | aout_link_check_ar_symbols (bfd *abfd, |
2668 | | struct bfd_link_info *info, |
2669 | | bool *pneeded, |
2670 | | bfd **subsbfd) |
2671 | 0 | { |
2672 | 0 | struct external_nlist *p; |
2673 | 0 | struct external_nlist *pend; |
2674 | 0 | char *strings; |
2675 | |
|
2676 | 0 | *pneeded = false; |
2677 | | |
2678 | | /* Look through all the symbols. */ |
2679 | 0 | p = obj_aout_external_syms (abfd); |
2680 | 0 | pend = p + obj_aout_external_sym_count (abfd); |
2681 | 0 | strings = obj_aout_external_strings (abfd); |
2682 | 0 | for (; p < pend; p++) |
2683 | 0 | { |
2684 | 0 | int type = H_GET_8 (abfd, p->e_type); |
2685 | 0 | const char *name = strings + GET_WORD (abfd, p->e_strx); |
2686 | 0 | struct bfd_link_hash_entry *h; |
2687 | | |
2688 | | /* Ignore symbols that are not externally visible. This is an |
2689 | | optimization only, as we check the type more thoroughly |
2690 | | below. */ |
2691 | 0 | if ((type & N_EXT) == 0 |
2692 | 0 | || is_stab(type, name) |
2693 | 0 | || type == N_FN) |
2694 | 0 | continue; |
2695 | | |
2696 | 0 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); |
2697 | | |
2698 | | /* We are only interested in symbols that are currently |
2699 | | undefined or common. */ |
2700 | 0 | if (h == NULL |
2701 | 0 | || (h->type != bfd_link_hash_undefined |
2702 | 0 | && h->type != bfd_link_hash_common)) |
2703 | 0 | continue; |
2704 | | |
2705 | 0 | if (type == (N_TEXT | N_EXT) |
2706 | 0 | || type == (N_DATA | N_EXT) |
2707 | 0 | || type == (N_BSS | N_EXT) |
2708 | 0 | || type == (N_ABS | N_EXT)) |
2709 | 0 | { |
2710 | | /* This object file defines this symbol. We must link it |
2711 | | in. This is true regardless of whether the current |
2712 | | definition of the symbol is undefined or common. If the |
2713 | | current definition is common, we have a case in which we |
2714 | | have already seen an object file including |
2715 | | int a; |
2716 | | and this object file from the archive includes |
2717 | | int a = 5; |
2718 | | In such a case we must include this object file. |
2719 | | |
2720 | | FIXME: The SunOS 4.1.3 linker will pull in the archive |
2721 | | element if the symbol is defined in the .data section, |
2722 | | but not if it is defined in the .text section. That |
2723 | | seems a bit crazy to me, and I haven't implemented it. |
2724 | | However, it might be correct. */ |
2725 | 0 | if (!(*info->callbacks |
2726 | 0 | ->add_archive_element) (info, abfd, name, subsbfd)) |
2727 | 0 | continue; |
2728 | 0 | *pneeded = true; |
2729 | 0 | return true; |
2730 | 0 | } |
2731 | | |
2732 | 0 | if (type == (N_UNDF | N_EXT)) |
2733 | 0 | { |
2734 | 0 | bfd_vma value; |
2735 | |
|
2736 | 0 | value = GET_WORD (abfd, p->e_value); |
2737 | 0 | if (value != 0) |
2738 | 0 | { |
2739 | | /* This symbol is common in the object from the archive |
2740 | | file. */ |
2741 | 0 | if (h->type == bfd_link_hash_undefined) |
2742 | 0 | { |
2743 | 0 | bfd *symbfd; |
2744 | 0 | unsigned int power; |
2745 | |
|
2746 | 0 | symbfd = h->u.undef.abfd; |
2747 | 0 | if (symbfd == NULL) |
2748 | 0 | { |
2749 | | /* This symbol was created as undefined from |
2750 | | outside BFD. We assume that we should link |
2751 | | in the object file. This is done for the -u |
2752 | | option in the linker. */ |
2753 | 0 | if (!(*info->callbacks |
2754 | 0 | ->add_archive_element) (info, abfd, name, subsbfd)) |
2755 | 0 | return false; |
2756 | 0 | *pneeded = true; |
2757 | 0 | return true; |
2758 | 0 | } |
2759 | | /* Turn the current link symbol into a common |
2760 | | symbol. It is already on the undefs list. */ |
2761 | 0 | h->type = bfd_link_hash_common; |
2762 | 0 | h->u.c.p = bfd_hash_allocate (&info->hash->table, |
2763 | 0 | sizeof (struct bfd_link_hash_common_entry)); |
2764 | 0 | if (h->u.c.p == NULL) |
2765 | 0 | return false; |
2766 | | |
2767 | 0 | h->u.c.size = value; |
2768 | | |
2769 | | /* FIXME: This isn't quite right. The maximum |
2770 | | alignment of a common symbol should be set by the |
2771 | | architecture of the output file, not of the input |
2772 | | file. */ |
2773 | 0 | power = bfd_log2 (value); |
2774 | 0 | if (power > bfd_get_arch_info (abfd)->section_align_power) |
2775 | 0 | power = bfd_get_arch_info (abfd)->section_align_power; |
2776 | 0 | h->u.c.p->alignment_power = power; |
2777 | |
|
2778 | 0 | h->u.c.p->section = bfd_make_section_old_way (symbfd, |
2779 | 0 | "COMMON"); |
2780 | 0 | } |
2781 | 0 | else |
2782 | 0 | { |
2783 | | /* Adjust the size of the common symbol if |
2784 | | necessary. */ |
2785 | 0 | if (value > h->u.c.size) |
2786 | 0 | h->u.c.size = value; |
2787 | 0 | } |
2788 | 0 | } |
2789 | 0 | } |
2790 | 0 | } |
2791 | | |
2792 | | /* We do not need this object file. */ |
2793 | 0 | return true; |
2794 | 0 | } |
2795 | | |
2796 | | /* Check a single archive element to see if we need to include it in |
2797 | | the link. *PNEEDED is set according to whether this element is |
2798 | | needed in the link or not. This is called from |
2799 | | _bfd_generic_link_add_archive_symbols. */ |
2800 | | |
2801 | | static bool |
2802 | | aout_link_check_archive_element (bfd *abfd, |
2803 | | struct bfd_link_info *info, |
2804 | | struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED, |
2805 | | const char *name ATTRIBUTE_UNUSED, |
2806 | | bool *pneeded) |
2807 | 0 | { |
2808 | 0 | bfd *oldbfd; |
2809 | 0 | bool needed; |
2810 | |
|
2811 | 0 | if (!aout_get_external_symbols (abfd)) |
2812 | 0 | return false; |
2813 | | |
2814 | 0 | oldbfd = abfd; |
2815 | 0 | if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd)) |
2816 | 0 | return false; |
2817 | | |
2818 | 0 | needed = *pneeded; |
2819 | 0 | if (needed) |
2820 | 0 | { |
2821 | | /* Potentially, the add_archive_element hook may have set a |
2822 | | substitute BFD for us. */ |
2823 | 0 | if (abfd != oldbfd) |
2824 | 0 | { |
2825 | 0 | if (!info->keep_memory |
2826 | 0 | && !aout_link_free_symbols (oldbfd)) |
2827 | 0 | return false; |
2828 | 0 | if (!aout_get_external_symbols (abfd)) |
2829 | 0 | return false; |
2830 | 0 | } |
2831 | 0 | if (!aout_link_add_symbols (abfd, info)) |
2832 | 0 | return false; |
2833 | 0 | } |
2834 | | |
2835 | 0 | if (!info->keep_memory || !needed) |
2836 | 0 | { |
2837 | 0 | if (!aout_link_free_symbols (abfd)) |
2838 | 0 | return false; |
2839 | 0 | } |
2840 | | |
2841 | 0 | return true; |
2842 | 0 | } |
2843 | | |
2844 | | /* Add all symbols from an object file to the hash table. */ |
2845 | | |
2846 | | static bool |
2847 | | aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
2848 | 0 | { |
2849 | 0 | bool (*add_one_symbol) |
2850 | 0 | (struct bfd_link_info *, bfd *, const char *, flagword, asection *, |
2851 | 0 | bfd_vma, const char *, bool, bool, struct bfd_link_hash_entry **); |
2852 | 0 | struct external_nlist *syms; |
2853 | 0 | bfd_size_type sym_count; |
2854 | 0 | char *strings; |
2855 | 0 | bool copy; |
2856 | 0 | struct aout_link_hash_entry **sym_hash; |
2857 | 0 | struct external_nlist *p; |
2858 | 0 | struct external_nlist *pend; |
2859 | |
|
2860 | 0 | syms = obj_aout_external_syms (abfd); |
2861 | 0 | sym_count = obj_aout_external_sym_count (abfd); |
2862 | 0 | strings = obj_aout_external_strings (abfd); |
2863 | 0 | if (info->keep_memory) |
2864 | 0 | copy = false; |
2865 | 0 | else |
2866 | 0 | copy = true; |
2867 | |
|
2868 | 0 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) |
2869 | 0 | { |
2870 | 0 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) |
2871 | 0 | (abfd, info, &syms, &sym_count, &strings))) |
2872 | 0 | return false; |
2873 | 0 | } |
2874 | | |
2875 | | /* We keep a list of the linker hash table entries that correspond |
2876 | | to particular symbols. We could just look them up in the hash |
2877 | | table, but keeping the list is more efficient. Perhaps this |
2878 | | should be conditional on info->keep_memory. */ |
2879 | 0 | sym_hash = bfd_alloc (abfd, |
2880 | 0 | sym_count * sizeof (struct aout_link_hash_entry *)); |
2881 | 0 | if (sym_hash == NULL && sym_count != 0) |
2882 | 0 | return false; |
2883 | 0 | obj_aout_sym_hashes (abfd) = sym_hash; |
2884 | |
|
2885 | 0 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; |
2886 | 0 | if (add_one_symbol == NULL) |
2887 | 0 | add_one_symbol = _bfd_generic_link_add_one_symbol; |
2888 | |
|
2889 | 0 | p = syms; |
2890 | 0 | pend = p + sym_count; |
2891 | 0 | for (; p < pend; p++, sym_hash++) |
2892 | 0 | { |
2893 | 0 | int type; |
2894 | 0 | const char *name; |
2895 | 0 | bfd_vma value; |
2896 | 0 | asection *section; |
2897 | 0 | flagword flags; |
2898 | 0 | const char *string; |
2899 | |
|
2900 | 0 | *sym_hash = NULL; |
2901 | |
|
2902 | 0 | type = H_GET_8 (abfd, p->e_type); |
2903 | | |
2904 | | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
2905 | 0 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
2906 | 0 | return false; |
2907 | 0 | name = strings + GET_WORD (abfd, p->e_strx); |
2908 | | |
2909 | | /* Ignore debugging symbols. */ |
2910 | 0 | if (is_stab (type, name)) |
2911 | 0 | continue; |
2912 | | |
2913 | 0 | value = GET_WORD (abfd, p->e_value); |
2914 | 0 | flags = BSF_GLOBAL; |
2915 | 0 | string = NULL; |
2916 | 0 | switch (type) |
2917 | 0 | { |
2918 | 0 | default: |
2919 | | /* Shouldn't be any types not covered. */ |
2920 | 0 | BFD_ASSERT (0); |
2921 | 0 | continue; |
2922 | | |
2923 | 0 | case N_UNDF: |
2924 | 0 | case N_ABS: |
2925 | 0 | case N_TEXT: |
2926 | 0 | case N_DATA: |
2927 | 0 | case N_BSS: |
2928 | 0 | case N_REG: |
2929 | 0 | case N_FN: |
2930 | | /* Ignore symbols that are not externally visible. */ |
2931 | 0 | continue; |
2932 | | |
2933 | 0 | case N_UNDF | N_EXT: |
2934 | 0 | if (value == 0) |
2935 | 0 | { |
2936 | 0 | section = bfd_und_section_ptr; |
2937 | 0 | flags = 0; |
2938 | 0 | } |
2939 | 0 | else |
2940 | 0 | section = bfd_com_section_ptr; |
2941 | 0 | break; |
2942 | 0 | case N_ABS | N_EXT: |
2943 | 0 | section = bfd_abs_section_ptr; |
2944 | 0 | break; |
2945 | 0 | case N_TEXT | N_EXT: |
2946 | 0 | section = obj_textsec (abfd); |
2947 | 0 | value -= bfd_section_vma (section); |
2948 | 0 | break; |
2949 | 0 | case N_DATA | N_EXT: |
2950 | | /* Treat N_SETV symbols as N_DATA symbol; see comment in |
2951 | | translate_from_native_sym_flags. */ |
2952 | 0 | section = obj_datasec (abfd); |
2953 | 0 | value -= bfd_section_vma (section); |
2954 | 0 | break; |
2955 | 0 | case N_BSS | N_EXT: |
2956 | 0 | section = obj_bsssec (abfd); |
2957 | 0 | value -= bfd_section_vma (section); |
2958 | 0 | break; |
2959 | 0 | } |
2960 | | |
2961 | 0 | if (! ((*add_one_symbol) |
2962 | 0 | (info, abfd, name, flags, section, value, string, copy, false, |
2963 | 0 | (struct bfd_link_hash_entry **) sym_hash))) |
2964 | 0 | return false; |
2965 | | |
2966 | | /* Restrict the maximum alignment of a common symbol based on |
2967 | | the architecture, since a.out has no way to represent |
2968 | | alignment requirements of a section in a .o file. FIXME: |
2969 | | This isn't quite right: it should use the architecture of the |
2970 | | output file, not the input files. */ |
2971 | 0 | if ((*sym_hash)->root.type == bfd_link_hash_common |
2972 | 0 | && ((*sym_hash)->root.u.c.p->alignment_power > |
2973 | 0 | bfd_get_arch_info (abfd)->section_align_power)) |
2974 | 0 | (*sym_hash)->root.u.c.p->alignment_power = |
2975 | 0 | bfd_get_arch_info (abfd)->section_align_power; |
2976 | | |
2977 | | /* If this is a set symbol, and we are not building sets, then |
2978 | | it is possible for the hash entry to not have been set. In |
2979 | | such a case, treat the symbol as not globally defined. */ |
2980 | 0 | if ((*sym_hash)->root.type == bfd_link_hash_new) |
2981 | 0 | { |
2982 | 0 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); |
2983 | 0 | *sym_hash = NULL; |
2984 | 0 | } |
2985 | 0 | } |
2986 | | |
2987 | 0 | return true; |
2988 | 0 | } |
2989 | | |
2990 | | /* Look up an entry in an the header file hash table. */ |
2991 | | |
2992 | | #define aout_link_includes_lookup(table, string, create, copy) \ |
2993 | 0 | ((struct aout_link_includes_entry *) \ |
2994 | 0 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) |
2995 | | |
2996 | | /* The function to create a new entry in the header file hash table. */ |
2997 | | |
2998 | | static struct bfd_hash_entry * |
2999 | | aout_link_includes_newfunc (struct bfd_hash_entry *entry, |
3000 | | struct bfd_hash_table *table, |
3001 | | const char *string) |
3002 | 0 | { |
3003 | 0 | struct aout_link_includes_entry * ret = |
3004 | 0 | (struct aout_link_includes_entry *) entry; |
3005 | | |
3006 | | /* Allocate the structure if it has not already been allocated by a |
3007 | | subclass. */ |
3008 | 0 | if (ret == NULL) |
3009 | 0 | ret = bfd_hash_allocate (table, |
3010 | 0 | sizeof (struct aout_link_includes_entry)); |
3011 | 0 | if (ret == NULL) |
3012 | 0 | return NULL; |
3013 | | |
3014 | | /* Call the allocation method of the superclass. */ |
3015 | 0 | ret = ((struct aout_link_includes_entry *) |
3016 | 0 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); |
3017 | 0 | if (ret) |
3018 | | /* Set local fields. */ |
3019 | 0 | ret->totals = NULL; |
3020 | |
|
3021 | 0 | return (struct bfd_hash_entry *) ret; |
3022 | 0 | } |
3023 | | |
3024 | | /* Write out a symbol that was not associated with an a.out input |
3025 | | object. */ |
3026 | | |
3027 | | static bool |
3028 | | aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data) |
3029 | 0 | { |
3030 | 0 | struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh; |
3031 | 0 | struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data; |
3032 | 0 | bfd *output_bfd; |
3033 | 0 | int type; |
3034 | 0 | bfd_vma val; |
3035 | 0 | struct external_nlist outsym; |
3036 | 0 | bfd_size_type indx; |
3037 | 0 | size_t amt; |
3038 | |
|
3039 | 0 | if (h->root.type == bfd_link_hash_warning) |
3040 | 0 | { |
3041 | 0 | h = (struct aout_link_hash_entry *) h->root.u.i.link; |
3042 | 0 | if (h->root.type == bfd_link_hash_new) |
3043 | 0 | return true; |
3044 | 0 | } |
3045 | | |
3046 | 0 | output_bfd = flaginfo->output_bfd; |
3047 | |
|
3048 | 0 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) |
3049 | 0 | { |
3050 | 0 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) |
3051 | 0 | (output_bfd, flaginfo->info, h))) |
3052 | 0 | { |
3053 | | /* FIXME: No way to handle errors. */ |
3054 | 0 | abort (); |
3055 | 0 | } |
3056 | 0 | } |
3057 | | |
3058 | 0 | if (h->written) |
3059 | 0 | return true; |
3060 | | |
3061 | 0 | h->written = true; |
3062 | | |
3063 | | /* An indx of -2 means the symbol must be written. */ |
3064 | 0 | if (h->indx != -2 |
3065 | 0 | && (flaginfo->info->strip == strip_all |
3066 | 0 | || (flaginfo->info->strip == strip_some |
3067 | 0 | && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string, |
3068 | 0 | false, false) == NULL))) |
3069 | 0 | return true; |
3070 | | |
3071 | 0 | switch (h->root.type) |
3072 | 0 | { |
3073 | 0 | default: |
3074 | 0 | abort (); |
3075 | | /* Avoid variable not initialized warnings. */ |
3076 | 0 | return true; |
3077 | 0 | case bfd_link_hash_new: |
3078 | | /* This can happen for set symbols when sets are not being |
3079 | | built. */ |
3080 | 0 | return true; |
3081 | 0 | case bfd_link_hash_undefined: |
3082 | 0 | type = N_UNDF | N_EXT; |
3083 | 0 | val = 0; |
3084 | 0 | break; |
3085 | 0 | case bfd_link_hash_defined: |
3086 | 0 | case bfd_link_hash_defweak: |
3087 | 0 | { |
3088 | 0 | asection *sec; |
3089 | |
|
3090 | 0 | sec = h->root.u.def.section->output_section; |
3091 | 0 | BFD_ASSERT (bfd_is_abs_section (sec) |
3092 | 0 | || sec->owner == output_bfd); |
3093 | 0 | if (sec == obj_textsec (output_bfd)) |
3094 | 0 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; |
3095 | 0 | else if (sec == obj_datasec (output_bfd)) |
3096 | 0 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; |
3097 | 0 | else if (sec == obj_bsssec (output_bfd)) |
3098 | 0 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; |
3099 | 0 | else |
3100 | 0 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; |
3101 | 0 | type |= N_EXT; |
3102 | 0 | val = (h->root.u.def.value |
3103 | 0 | + sec->vma |
3104 | 0 | + h->root.u.def.section->output_offset); |
3105 | 0 | } |
3106 | 0 | break; |
3107 | 0 | case bfd_link_hash_common: |
3108 | 0 | type = N_UNDF | N_EXT; |
3109 | 0 | val = h->root.u.c.size; |
3110 | 0 | break; |
3111 | 0 | case bfd_link_hash_undefweak: |
3112 | 0 | type = N_WEAKU; |
3113 | 0 | val = 0; |
3114 | | /* Fall through. */ |
3115 | 0 | case bfd_link_hash_indirect: |
3116 | 0 | case bfd_link_hash_warning: |
3117 | | /* FIXME: Ignore these for now. The circumstances under which |
3118 | | they should be written out are not clear to me. */ |
3119 | 0 | return true; |
3120 | 0 | } |
3121 | | |
3122 | 0 | H_PUT_8 (output_bfd, type, outsym.e_type); |
3123 | 0 | H_PUT_8 (output_bfd, 0, outsym.e_ovly); |
3124 | 0 | indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string, |
3125 | 0 | false); |
3126 | 0 | if (indx == (bfd_size_type) -1) |
3127 | | /* FIXME: No way to handle errors. */ |
3128 | 0 | abort (); |
3129 | | |
3130 | 0 | PUT_WORD (output_bfd, 0, outsym.e_desc); |
3131 | 0 | PUT_WORD (output_bfd, indx, outsym.e_strx); |
3132 | 0 | PUT_WORD (output_bfd, val, outsym.e_value); |
3133 | |
|
3134 | 0 | amt = EXTERNAL_NLIST_SIZE; |
3135 | 0 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0 |
3136 | 0 | || bfd_write (&outsym, amt, output_bfd) != amt) |
3137 | | /* FIXME: No way to handle errors. */ |
3138 | 0 | abort (); |
3139 | | |
3140 | 0 | flaginfo->symoff += amt; |
3141 | 0 | h->indx = obj_aout_external_sym_count (output_bfd); |
3142 | 0 | ++obj_aout_external_sym_count (output_bfd); |
3143 | |
|
3144 | 0 | return true; |
3145 | 0 | } |
3146 | | |
3147 | | /* Handle a link order which is supposed to generate a reloc. */ |
3148 | | |
3149 | | static bool |
3150 | | aout_link_reloc_link_order (struct aout_final_link_info *flaginfo, |
3151 | | asection *o, |
3152 | | struct bfd_link_order *p) |
3153 | 0 | { |
3154 | 0 | struct bfd_link_order_reloc *pr; |
3155 | 0 | int r_index; |
3156 | 0 | int r_extern; |
3157 | 0 | reloc_howto_type *howto; |
3158 | 0 | file_ptr *reloff_ptr; |
3159 | 0 | struct reloc_std_external srel; |
3160 | 0 | void * rel_ptr; |
3161 | 0 | bfd_size_type rel_size; |
3162 | |
|
3163 | 0 | pr = p->u.reloc.p; |
3164 | |
|
3165 | 0 | if (p->type == bfd_section_reloc_link_order) |
3166 | 0 | { |
3167 | 0 | r_extern = 0; |
3168 | 0 | if (bfd_is_abs_section (pr->u.section)) |
3169 | 0 | r_index = N_ABS | N_EXT; |
3170 | 0 | else |
3171 | 0 | { |
3172 | 0 | BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd); |
3173 | 0 | r_index = pr->u.section->target_index; |
3174 | 0 | } |
3175 | 0 | } |
3176 | 0 | else |
3177 | 0 | { |
3178 | 0 | struct aout_link_hash_entry *h; |
3179 | |
|
3180 | 0 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); |
3181 | 0 | r_extern = 1; |
3182 | 0 | h = ((struct aout_link_hash_entry *) |
3183 | 0 | bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info, |
3184 | 0 | pr->u.name, false, false, true)); |
3185 | 0 | if (h != NULL |
3186 | 0 | && h->indx >= 0) |
3187 | 0 | r_index = h->indx; |
3188 | 0 | else if (h != NULL) |
3189 | 0 | { |
3190 | | /* We decided to strip this symbol, but it turns out that we |
3191 | | can't. Note that we lose the other and desc information |
3192 | | here. I don't think that will ever matter for a global |
3193 | | symbol. */ |
3194 | 0 | h->indx = -2; |
3195 | 0 | h->written = false; |
3196 | 0 | if (!aout_link_write_other_symbol (&h->root.root, flaginfo)) |
3197 | 0 | return false; |
3198 | 0 | r_index = h->indx; |
3199 | 0 | } |
3200 | 0 | else |
3201 | 0 | { |
3202 | 0 | (*flaginfo->info->callbacks->unattached_reloc) |
3203 | 0 | (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0); |
3204 | 0 | r_index = 0; |
3205 | 0 | } |
3206 | 0 | } |
3207 | | |
3208 | 0 | howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc); |
3209 | 0 | if (howto == 0) |
3210 | 0 | { |
3211 | 0 | bfd_set_error (bfd_error_bad_value); |
3212 | 0 | return false; |
3213 | 0 | } |
3214 | | |
3215 | 0 | if (o == obj_textsec (flaginfo->output_bfd)) |
3216 | 0 | reloff_ptr = &flaginfo->treloff; |
3217 | 0 | else if (o == obj_datasec (flaginfo->output_bfd)) |
3218 | 0 | reloff_ptr = &flaginfo->dreloff; |
3219 | 0 | else |
3220 | 0 | abort (); |
3221 | | |
3222 | | #ifdef MY_put_reloc |
3223 | | MY_put_reloc(flaginfo->output_bfd, r_extern, r_index, p->offset, howto, |
3224 | | &srel); |
3225 | | #else |
3226 | 0 | { |
3227 | 0 | int r_pcrel; |
3228 | 0 | int r_baserel; |
3229 | 0 | int r_jmptable; |
3230 | 0 | int r_relative; |
3231 | 0 | int r_length; |
3232 | |
|
3233 | 0 | fprintf (stderr, "TODO: line %d in bfd/pdp11.c\n", __LINE__); |
3234 | |
|
3235 | 0 | r_pcrel = howto->pc_relative; |
3236 | 0 | r_baserel = (howto->type & 8) != 0; |
3237 | 0 | r_jmptable = (howto->type & 16) != 0; |
3238 | 0 | r_relative = (howto->type & 32) != 0; |
3239 | 0 | r_length = bfd_log2 (bfd_get_reloc_size (howto)); |
3240 | |
|
3241 | 0 | PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address); |
3242 | 0 | if (bfd_header_big_endian (flaginfo->output_bfd)) |
3243 | 0 | { |
3244 | 0 | srel.r_index[0] = r_index >> 16; |
3245 | 0 | srel.r_index[1] = r_index >> 8; |
3246 | 0 | srel.r_index[2] = r_index; |
3247 | 0 | srel.r_type[0] = |
3248 | 0 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) |
3249 | 0 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) |
3250 | 0 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) |
3251 | 0 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) |
3252 | 0 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) |
3253 | 0 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); |
3254 | 0 | } |
3255 | 0 | else |
3256 | 0 | { |
3257 | 0 | srel.r_index[2] = r_index >> 16; |
3258 | 0 | srel.r_index[1] = r_index >> 8; |
3259 | 0 | srel.r_index[0] = r_index; |
3260 | 0 | srel.r_type[0] = |
3261 | 0 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) |
3262 | 0 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) |
3263 | 0 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) |
3264 | 0 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) |
3265 | 0 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) |
3266 | 0 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); |
3267 | 0 | } |
3268 | 0 | } |
3269 | 0 | #endif |
3270 | 0 | rel_ptr = (void *) &srel; |
3271 | | |
3272 | | /* We have to write the addend into the object file, since |
3273 | | standard a.out relocs are in place. It would be more |
3274 | | reliable if we had the current contents of the file here, |
3275 | | rather than assuming zeroes, but we can't read the file since |
3276 | | it was opened using bfd_openw. */ |
3277 | 0 | if (pr->addend != 0) |
3278 | 0 | { |
3279 | 0 | bfd_size_type size; |
3280 | 0 | bfd_reloc_status_type r; |
3281 | 0 | bfd_byte *buf; |
3282 | 0 | bool ok; |
3283 | |
|
3284 | 0 | size = bfd_get_reloc_size (howto); |
3285 | 0 | buf = bfd_zmalloc (size); |
3286 | 0 | if (buf == NULL && size != 0) |
3287 | 0 | return false; |
3288 | 0 | r = MY_relocate_contents (howto, flaginfo->output_bfd, |
3289 | 0 | pr->addend, buf); |
3290 | 0 | switch (r) |
3291 | 0 | { |
3292 | 0 | case bfd_reloc_ok: |
3293 | 0 | break; |
3294 | 0 | default: |
3295 | 0 | case bfd_reloc_outofrange: |
3296 | 0 | abort (); |
3297 | 0 | case bfd_reloc_overflow: |
3298 | 0 | (*flaginfo->info->callbacks->reloc_overflow) |
3299 | 0 | (flaginfo->info, NULL, |
3300 | 0 | (p->type == bfd_section_reloc_link_order |
3301 | 0 | ? bfd_section_name (pr->u.section) |
3302 | 0 | : pr->u.name), |
3303 | 0 | howto->name, pr->addend, NULL, |
3304 | 0 | (asection *) NULL, (bfd_vma) 0); |
3305 | 0 | break; |
3306 | 0 | } |
3307 | 0 | ok = bfd_set_section_contents (flaginfo->output_bfd, o, |
3308 | 0 | (void *) buf, |
3309 | 0 | (file_ptr) p->offset, |
3310 | 0 | size); |
3311 | 0 | free (buf); |
3312 | 0 | if (! ok) |
3313 | 0 | return false; |
3314 | 0 | } |
3315 | | |
3316 | 0 | rel_size = obj_reloc_entry_size (flaginfo->output_bfd); |
3317 | 0 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 |
3318 | 0 | || bfd_write (rel_ptr, rel_size, flaginfo->output_bfd) != rel_size) |
3319 | 0 | return false; |
3320 | | |
3321 | 0 | *reloff_ptr += rel_size; |
3322 | | |
3323 | | /* Assert that the relocs have not run into the symbols, and that n |
3324 | | the text relocs have not run into the data relocs. */ |
3325 | 0 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3326 | 0 | && (reloff_ptr != &flaginfo->treloff |
3327 | 0 | || (*reloff_ptr |
3328 | 0 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
3329 | |
|
3330 | 0 | return true; |
3331 | 0 | } |
3332 | | |
3333 | | /* Get the section corresponding to a reloc index. */ |
3334 | | |
3335 | | static inline asection * |
3336 | | aout_reloc_type_to_section (bfd *abfd, int type) |
3337 | 0 | { |
3338 | 0 | switch (type) |
3339 | 0 | { |
3340 | 0 | case RTEXT: return obj_textsec (abfd); |
3341 | 0 | case RDATA: return obj_datasec (abfd); |
3342 | 0 | case RBSS: return obj_bsssec (abfd); |
3343 | 0 | case RABS: return bfd_abs_section_ptr; |
3344 | 0 | case REXT: return bfd_und_section_ptr; |
3345 | 0 | default: abort (); |
3346 | 0 | } |
3347 | 0 | } |
3348 | | |
3349 | | static bool |
3350 | | pdp11_aout_link_input_section (struct aout_final_link_info *flaginfo, |
3351 | | bfd *input_bfd, |
3352 | | asection *input_section, |
3353 | | bfd_byte *relocs, |
3354 | | bfd_size_type rel_size, |
3355 | | bfd_byte *contents) |
3356 | 0 | { |
3357 | 0 | bool (*check_dynamic_reloc) |
3358 | 0 | (struct bfd_link_info *, bfd *, asection *, |
3359 | 0 | struct aout_link_hash_entry *, void *, bfd_byte *, bool *, bfd_vma *); |
3360 | 0 | bfd *output_bfd; |
3361 | 0 | bool relocatable; |
3362 | 0 | struct external_nlist *syms; |
3363 | 0 | char *strings; |
3364 | 0 | struct aout_link_hash_entry **sym_hashes; |
3365 | 0 | int *symbol_map; |
3366 | 0 | bfd_byte *rel; |
3367 | 0 | bfd_byte *rel_end; |
3368 | |
|
3369 | 0 | output_bfd = flaginfo->output_bfd; |
3370 | 0 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
3371 | |
|
3372 | 0 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_SIZE); |
3373 | 0 | BFD_ASSERT (input_bfd->xvec->header_byteorder |
3374 | 0 | == output_bfd->xvec->header_byteorder); |
3375 | |
|
3376 | 0 | relocatable = bfd_link_relocatable (flaginfo->info); |
3377 | 0 | syms = obj_aout_external_syms (input_bfd); |
3378 | 0 | strings = obj_aout_external_strings (input_bfd); |
3379 | 0 | sym_hashes = obj_aout_sym_hashes (input_bfd); |
3380 | 0 | symbol_map = flaginfo->symbol_map; |
3381 | |
|
3382 | 0 | rel = relocs; |
3383 | 0 | rel_end = rel + rel_size; |
3384 | 0 | for (; rel < rel_end; rel += RELOC_SIZE) |
3385 | 0 | { |
3386 | 0 | bfd_vma r_addr; |
3387 | 0 | int r_index; |
3388 | 0 | int r_type; |
3389 | 0 | int r_pcrel; |
3390 | 0 | int r_extern; |
3391 | 0 | reloc_howto_type *howto; |
3392 | 0 | struct aout_link_hash_entry *h = NULL; |
3393 | 0 | bfd_vma relocation; |
3394 | 0 | bfd_reloc_status_type r; |
3395 | 0 | int reloc_entry; |
3396 | |
|
3397 | 0 | reloc_entry = GET_WORD (input_bfd, (void *) rel); |
3398 | 0 | if (reloc_entry == 0) |
3399 | 0 | continue; |
3400 | | |
3401 | 0 | { |
3402 | 0 | unsigned int howto_idx; |
3403 | |
|
3404 | 0 | r_index = (reloc_entry & RIDXMASK) >> 4; |
3405 | 0 | r_type = reloc_entry & RTYPE; |
3406 | 0 | r_pcrel = reloc_entry & RELFLG; |
3407 | 0 | r_addr = (char *) rel - (char *) relocs; |
3408 | |
|
3409 | 0 | r_extern = (r_type == REXT); |
3410 | |
|
3411 | 0 | howto_idx = r_pcrel; |
3412 | 0 | if (howto_idx < TABLE_SIZE (howto_table_pdp11)) |
3413 | 0 | howto = howto_table_pdp11 + howto_idx; |
3414 | 0 | else |
3415 | 0 | { |
3416 | 0 | _bfd_error_handler (_("%pB: unsupported relocation type"), |
3417 | 0 | input_bfd); |
3418 | 0 | bfd_set_error (bfd_error_bad_value); |
3419 | 0 | return false; |
3420 | 0 | } |
3421 | 0 | } |
3422 | | |
3423 | 0 | if (relocatable) |
3424 | 0 | { |
3425 | | /* We are generating a relocatable output file, and must |
3426 | | modify the reloc accordingly. */ |
3427 | 0 | if (r_extern) |
3428 | 0 | { |
3429 | | /* If we know the symbol this relocation is against, |
3430 | | convert it into a relocation against a section. This |
3431 | | is what the native linker does. */ |
3432 | 0 | h = sym_hashes[r_index]; |
3433 | 0 | if (h != NULL |
3434 | 0 | && (h->root.type == bfd_link_hash_defined |
3435 | 0 | || h->root.type == bfd_link_hash_defweak)) |
3436 | 0 | { |
3437 | 0 | asection *output_section; |
3438 | | |
3439 | | /* Compute a new r_index. */ |
3440 | 0 | output_section = h->root.u.def.section->output_section; |
3441 | 0 | if (output_section == obj_textsec (output_bfd)) |
3442 | 0 | r_type = N_TEXT; |
3443 | 0 | else if (output_section == obj_datasec (output_bfd)) |
3444 | 0 | r_type = N_DATA; |
3445 | 0 | else if (output_section == obj_bsssec (output_bfd)) |
3446 | 0 | r_type = N_BSS; |
3447 | 0 | else |
3448 | 0 | r_type = N_ABS; |
3449 | | |
3450 | | /* Add the symbol value and the section VMA to the |
3451 | | addend stored in the contents. */ |
3452 | 0 | relocation = (h->root.u.def.value |
3453 | 0 | + output_section->vma |
3454 | 0 | + h->root.u.def.section->output_offset); |
3455 | 0 | } |
3456 | 0 | else |
3457 | 0 | { |
3458 | | /* We must change r_index according to the symbol |
3459 | | map. */ |
3460 | 0 | r_index = symbol_map[r_index]; |
3461 | |
|
3462 | 0 | if (r_index == -1) |
3463 | 0 | { |
3464 | 0 | if (h != NULL) |
3465 | 0 | { |
3466 | | /* We decided to strip this symbol, but it |
3467 | | turns out that we can't. Note that we |
3468 | | lose the other and desc information here. |
3469 | | I don't think that will ever matter for a |
3470 | | global symbol. */ |
3471 | 0 | if (h->indx < 0) |
3472 | 0 | { |
3473 | 0 | h->indx = -2; |
3474 | 0 | h->written = false; |
3475 | 0 | if (!aout_link_write_other_symbol (&h->root.root, |
3476 | 0 | flaginfo)) |
3477 | 0 | return false; |
3478 | 0 | } |
3479 | 0 | r_index = h->indx; |
3480 | 0 | } |
3481 | 0 | else |
3482 | 0 | { |
3483 | 0 | const char *name; |
3484 | |
|
3485 | 0 | name = strings + GET_WORD (input_bfd, |
3486 | 0 | syms[r_index].e_strx); |
3487 | 0 | (*flaginfo->info->callbacks->unattached_reloc) |
3488 | 0 | (flaginfo->info, name, input_bfd, input_section, |
3489 | 0 | r_addr); |
3490 | 0 | r_index = 0; |
3491 | 0 | } |
3492 | 0 | } |
3493 | | |
3494 | 0 | relocation = 0; |
3495 | 0 | } |
3496 | | |
3497 | | /* Write out the new r_index value. */ |
3498 | 0 | reloc_entry = GET_WORD (input_bfd, rel); |
3499 | 0 | reloc_entry &= RIDXMASK; |
3500 | 0 | reloc_entry |= r_index << 4; |
3501 | 0 | PUT_WORD (input_bfd, reloc_entry, rel); |
3502 | 0 | } |
3503 | 0 | else |
3504 | 0 | { |
3505 | 0 | asection *section; |
3506 | | |
3507 | | /* This is a relocation against a section. We must |
3508 | | adjust by the amount that the section moved. */ |
3509 | 0 | section = aout_reloc_type_to_section (input_bfd, r_type); |
3510 | 0 | relocation = (section->output_section->vma |
3511 | 0 | + section->output_offset |
3512 | 0 | - section->vma); |
3513 | 0 | } |
3514 | | |
3515 | | /* Change the address of the relocation. */ |
3516 | 0 | fprintf (stderr, "TODO: change the address of the relocation\n"); |
3517 | | |
3518 | | /* Adjust a PC relative relocation by removing the reference |
3519 | | to the original address in the section and including the |
3520 | | reference to the new address. */ |
3521 | 0 | if (r_pcrel) |
3522 | 0 | relocation -= (input_section->output_section->vma |
3523 | 0 | + input_section->output_offset |
3524 | 0 | - input_section->vma); |
3525 | |
|
3526 | | #ifdef MY_relocatable_reloc |
3527 | | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); |
3528 | | #endif |
3529 | |
|
3530 | 0 | if (relocation == 0) |
3531 | 0 | r = bfd_reloc_ok; |
3532 | 0 | else |
3533 | 0 | r = MY_relocate_contents (howto, |
3534 | 0 | input_bfd, relocation, |
3535 | 0 | contents + r_addr); |
3536 | 0 | } |
3537 | 0 | else |
3538 | 0 | { |
3539 | 0 | bool hundef; |
3540 | | |
3541 | | /* We are generating an executable, and must do a full |
3542 | | relocation. */ |
3543 | 0 | hundef = false; |
3544 | 0 | if (r_extern) |
3545 | 0 | { |
3546 | 0 | h = sym_hashes[r_index]; |
3547 | |
|
3548 | 0 | if (h != NULL |
3549 | 0 | && (h->root.type == bfd_link_hash_defined |
3550 | 0 | || h->root.type == bfd_link_hash_defweak)) |
3551 | 0 | { |
3552 | 0 | relocation = (h->root.u.def.value |
3553 | 0 | + h->root.u.def.section->output_section->vma |
3554 | 0 | + h->root.u.def.section->output_offset); |
3555 | 0 | } |
3556 | 0 | else if (h != NULL |
3557 | 0 | && h->root.type == bfd_link_hash_undefweak) |
3558 | 0 | relocation = 0; |
3559 | 0 | else |
3560 | 0 | { |
3561 | 0 | hundef = true; |
3562 | 0 | relocation = 0; |
3563 | 0 | } |
3564 | 0 | } |
3565 | 0 | else |
3566 | 0 | { |
3567 | 0 | asection *section; |
3568 | |
|
3569 | 0 | section = aout_reloc_type_to_section (input_bfd, r_type); |
3570 | 0 | relocation = (section->output_section->vma |
3571 | 0 | + section->output_offset |
3572 | 0 | - section->vma); |
3573 | 0 | if (r_pcrel) |
3574 | 0 | relocation += input_section->vma; |
3575 | 0 | } |
3576 | |
|
3577 | 0 | if (check_dynamic_reloc != NULL) |
3578 | 0 | { |
3579 | 0 | bool skip; |
3580 | |
|
3581 | 0 | if (! ((*check_dynamic_reloc) |
3582 | 0 | (flaginfo->info, input_bfd, input_section, h, |
3583 | 0 | (void *) rel, contents, &skip, &relocation))) |
3584 | 0 | return false; |
3585 | 0 | if (skip) |
3586 | 0 | continue; |
3587 | 0 | } |
3588 | | |
3589 | | /* Now warn if a global symbol is undefined. We could not |
3590 | | do this earlier, because check_dynamic_reloc might want |
3591 | | to skip this reloc. */ |
3592 | 0 | if (hundef && ! bfd_link_pic (flaginfo->info)) |
3593 | 0 | { |
3594 | 0 | const char *name; |
3595 | |
|
3596 | 0 | if (h != NULL) |
3597 | 0 | name = h->root.root.string; |
3598 | 0 | else |
3599 | 0 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); |
3600 | 0 | (*flaginfo->info->callbacks->undefined_symbol) |
3601 | 0 | (flaginfo->info, name, input_bfd, input_section, |
3602 | 0 | r_addr, true); |
3603 | 0 | } |
3604 | |
|
3605 | 0 | r = MY_final_link_relocate (howto, |
3606 | 0 | input_bfd, input_section, |
3607 | 0 | contents, r_addr, relocation, |
3608 | 0 | (bfd_vma) 0); |
3609 | 0 | } |
3610 | | |
3611 | 0 | if (r != bfd_reloc_ok) |
3612 | 0 | { |
3613 | 0 | switch (r) |
3614 | 0 | { |
3615 | 0 | default: |
3616 | 0 | case bfd_reloc_outofrange: |
3617 | 0 | abort (); |
3618 | 0 | case bfd_reloc_overflow: |
3619 | 0 | { |
3620 | 0 | const char *name; |
3621 | |
|
3622 | 0 | if (h != NULL) |
3623 | 0 | name = NULL; |
3624 | 0 | else if (r_extern) |
3625 | 0 | name = strings + GET_WORD (input_bfd, |
3626 | 0 | syms[r_index].e_strx); |
3627 | 0 | else |
3628 | 0 | { |
3629 | 0 | asection *s; |
3630 | |
|
3631 | 0 | s = aout_reloc_type_to_section (input_bfd, r_type); |
3632 | 0 | name = bfd_section_name (s); |
3633 | 0 | } |
3634 | 0 | (*flaginfo->info->callbacks->reloc_overflow) |
3635 | 0 | (flaginfo->info, (h ? &h->root : NULL), name, howto->name, |
3636 | 0 | (bfd_vma) 0, input_bfd, input_section, r_addr); |
3637 | 0 | } |
3638 | 0 | break; |
3639 | 0 | } |
3640 | 0 | } |
3641 | 0 | } |
3642 | | |
3643 | 0 | return true; |
3644 | 0 | } |
3645 | | |
3646 | | /* Link an a.out section into the output file. */ |
3647 | | |
3648 | | static bool |
3649 | | aout_link_input_section (struct aout_final_link_info *flaginfo, |
3650 | | bfd *input_bfd, |
3651 | | asection *input_section, |
3652 | | file_ptr *reloff_ptr, |
3653 | | bfd_size_type rel_size) |
3654 | 0 | { |
3655 | 0 | bfd_size_type input_size; |
3656 | 0 | void * relocs; |
3657 | | |
3658 | | /* Get the section contents. */ |
3659 | 0 | input_size = input_section->size; |
3660 | 0 | if (! bfd_get_section_contents (input_bfd, input_section, |
3661 | 0 | (void *) flaginfo->contents, |
3662 | 0 | (file_ptr) 0, input_size)) |
3663 | 0 | return false; |
3664 | | |
3665 | | /* Read in the relocs if we haven't already done it. */ |
3666 | 0 | if (aout_section_data (input_section) != NULL |
3667 | 0 | && aout_section_data (input_section)->relocs != NULL) |
3668 | 0 | relocs = aout_section_data (input_section)->relocs; |
3669 | 0 | else |
3670 | 0 | { |
3671 | 0 | relocs = flaginfo->relocs; |
3672 | 0 | if (rel_size > 0) |
3673 | 0 | { |
3674 | 0 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 |
3675 | 0 | || bfd_read (relocs, rel_size, input_bfd) != rel_size) |
3676 | 0 | return false; |
3677 | 0 | } |
3678 | 0 | } |
3679 | | |
3680 | | /* Relocate the section contents. */ |
3681 | 0 | if (! pdp11_aout_link_input_section (flaginfo, input_bfd, input_section, |
3682 | 0 | (bfd_byte *) relocs, |
3683 | 0 | rel_size, flaginfo->contents)) |
3684 | 0 | return false; |
3685 | | |
3686 | | /* Write out the section contents. */ |
3687 | 0 | if (! bfd_set_section_contents (flaginfo->output_bfd, |
3688 | 0 | input_section->output_section, |
3689 | 0 | (void *) flaginfo->contents, |
3690 | 0 | (file_ptr) input_section->output_offset, |
3691 | 0 | input_size)) |
3692 | 0 | return false; |
3693 | | |
3694 | | /* If we are producing relocatable output, the relocs were |
3695 | | modified, and we now write them out. */ |
3696 | 0 | if (bfd_link_relocatable (flaginfo->info) && rel_size > 0) |
3697 | 0 | { |
3698 | 0 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) |
3699 | 0 | return false; |
3700 | 0 | if (bfd_write (relocs, rel_size, flaginfo->output_bfd) != rel_size) |
3701 | 0 | return false; |
3702 | 0 | *reloff_ptr += rel_size; |
3703 | | |
3704 | | /* Assert that the relocs have not run into the symbols, and |
3705 | | that if these are the text relocs they have not run into the |
3706 | | data relocs. */ |
3707 | 0 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3708 | 0 | && (reloff_ptr != &flaginfo->treloff |
3709 | 0 | || (*reloff_ptr |
3710 | 0 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
3711 | 0 | } |
3712 | | |
3713 | 0 | return true; |
3714 | 0 | } |
3715 | | |
3716 | | /* Link an a.out input BFD into the output file. */ |
3717 | | |
3718 | | static bool |
3719 | | aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
3720 | 0 | { |
3721 | 0 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); |
3722 | | |
3723 | | /* If this is a dynamic object, it may need special handling. */ |
3724 | 0 | if ((input_bfd->flags & DYNAMIC) != 0 |
3725 | 0 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) |
3726 | 0 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) |
3727 | 0 | (flaginfo->info, input_bfd)); |
3728 | | |
3729 | | /* Get the symbols. We probably have them already, unless |
3730 | | flaginfo->info->keep_memory is FALSE. */ |
3731 | 0 | if (! aout_get_external_symbols (input_bfd)) |
3732 | 0 | return false; |
3733 | | |
3734 | | /* Write out the symbols and get a map of the new indices. The map |
3735 | | is placed into flaginfo->symbol_map. */ |
3736 | 0 | if (! aout_link_write_symbols (flaginfo, input_bfd)) |
3737 | 0 | return false; |
3738 | | |
3739 | | /* Relocate and write out the sections. These functions use the |
3740 | | symbol map created by aout_link_write_symbols. The linker_mark |
3741 | | field will be set if these sections are to be included in the |
3742 | | link, which will normally be the case. */ |
3743 | 0 | if (obj_textsec (input_bfd)->linker_mark) |
3744 | 0 | { |
3745 | 0 | if (! aout_link_input_section (flaginfo, input_bfd, |
3746 | 0 | obj_textsec (input_bfd), |
3747 | 0 | &flaginfo->treloff, |
3748 | 0 | exec_hdr (input_bfd)->a_trsize)) |
3749 | 0 | return false; |
3750 | 0 | } |
3751 | 0 | if (obj_datasec (input_bfd)->linker_mark) |
3752 | 0 | { |
3753 | 0 | if (! aout_link_input_section (flaginfo, input_bfd, |
3754 | 0 | obj_datasec (input_bfd), |
3755 | 0 | &flaginfo->dreloff, |
3756 | 0 | exec_hdr (input_bfd)->a_drsize)) |
3757 | 0 | return false; |
3758 | 0 | } |
3759 | | |
3760 | | /* If we are not keeping memory, we don't need the symbols any |
3761 | | longer. We still need them if we are keeping memory, because the |
3762 | | strings in the hash table point into them. */ |
3763 | 0 | if (! flaginfo->info->keep_memory) |
3764 | 0 | { |
3765 | 0 | if (! aout_link_free_symbols (input_bfd)) |
3766 | 0 | return false; |
3767 | 0 | } |
3768 | | |
3769 | 0 | return true; |
3770 | 0 | } |
3771 | | |
3772 | | /* Do the final link step. This is called on the output BFD. The |
3773 | | INFO structure should point to a list of BFDs linked through the |
3774 | | link.next field which can be used to find each BFD which takes part |
3775 | | in the output. Also, each section in ABFD should point to a list |
3776 | | of bfd_link_order structures which list all the input sections for |
3777 | | the output section. */ |
3778 | | |
3779 | | bool |
3780 | | NAME (aout, final_link) (bfd *abfd, |
3781 | | struct bfd_link_info *info, |
3782 | | void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *)) |
3783 | 0 | { |
3784 | 0 | struct aout_final_link_info aout_info; |
3785 | 0 | bool includes_hash_initialized = false; |
3786 | 0 | bfd *sub; |
3787 | 0 | bfd_size_type trsize, drsize; |
3788 | 0 | bfd_size_type max_contents_size; |
3789 | 0 | bfd_size_type max_relocs_size; |
3790 | 0 | bfd_size_type max_sym_count; |
3791 | 0 | struct bfd_link_order *p; |
3792 | 0 | asection *o; |
3793 | 0 | bool have_link_order_relocs; |
3794 | |
|
3795 | 0 | if (bfd_link_pic (info)) |
3796 | 0 | abfd->flags |= DYNAMIC; |
3797 | |
|
3798 | 0 | separate_i_d = info->separate_code; |
3799 | 0 | aout_info.info = info; |
3800 | 0 | aout_info.output_bfd = abfd; |
3801 | 0 | aout_info.contents = NULL; |
3802 | 0 | aout_info.relocs = NULL; |
3803 | 0 | aout_info.symbol_map = NULL; |
3804 | 0 | aout_info.output_syms = NULL; |
3805 | |
|
3806 | 0 | if (!bfd_hash_table_init_n (&aout_info.includes.root, |
3807 | 0 | aout_link_includes_newfunc, |
3808 | 0 | sizeof (struct aout_link_includes_entry), |
3809 | 0 | 251)) |
3810 | 0 | goto error_return; |
3811 | 0 | includes_hash_initialized = true; |
3812 | | |
3813 | | /* Figure out the largest section size. Also, if generating |
3814 | | relocatable output, count the relocs. */ |
3815 | 0 | trsize = 0; |
3816 | 0 | drsize = 0; |
3817 | 0 | max_contents_size = 0; |
3818 | 0 | max_relocs_size = 0; |
3819 | 0 | max_sym_count = 0; |
3820 | 0 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
3821 | 0 | { |
3822 | 0 | size_t sz; |
3823 | |
|
3824 | 0 | if (bfd_link_relocatable (info)) |
3825 | 0 | { |
3826 | 0 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3827 | 0 | { |
3828 | 0 | trsize += exec_hdr (sub)->a_trsize; |
3829 | 0 | drsize += exec_hdr (sub)->a_drsize; |
3830 | 0 | } |
3831 | 0 | else |
3832 | 0 | { |
3833 | | /* FIXME: We need to identify the .text and .data sections |
3834 | | and call get_reloc_upper_bound and canonicalize_reloc to |
3835 | | work out the number of relocs needed, and then multiply |
3836 | | by the reloc size. */ |
3837 | 0 | _bfd_error_handler |
3838 | | /* xgettext:c-format */ |
3839 | 0 | (_("%pB: relocatable link from %s to %s not supported"), |
3840 | 0 | abfd, sub->xvec->name, abfd->xvec->name); |
3841 | 0 | bfd_set_error (bfd_error_invalid_operation); |
3842 | 0 | goto error_return; |
3843 | 0 | } |
3844 | 0 | } |
3845 | | |
3846 | 0 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3847 | 0 | { |
3848 | 0 | sz = obj_textsec (sub)->size; |
3849 | 0 | if (sz > max_contents_size) |
3850 | 0 | max_contents_size = sz; |
3851 | 0 | sz = obj_datasec (sub)->size; |
3852 | 0 | if (sz > max_contents_size) |
3853 | 0 | max_contents_size = sz; |
3854 | |
|
3855 | 0 | sz = exec_hdr (sub)->a_trsize; |
3856 | 0 | if (sz > max_relocs_size) |
3857 | 0 | max_relocs_size = sz; |
3858 | 0 | sz = exec_hdr (sub)->a_drsize; |
3859 | 0 | if (sz > max_relocs_size) |
3860 | 0 | max_relocs_size = sz; |
3861 | |
|
3862 | 0 | sz = obj_aout_external_sym_count (sub); |
3863 | 0 | if (sz > max_sym_count) |
3864 | 0 | max_sym_count = sz; |
3865 | 0 | } |
3866 | 0 | } |
3867 | | |
3868 | 0 | if (bfd_link_relocatable (info)) |
3869 | 0 | { |
3870 | 0 | if (obj_textsec (abfd) != NULL) |
3871 | 0 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) |
3872 | 0 | ->map_head.link_order) |
3873 | 0 | * obj_reloc_entry_size (abfd)); |
3874 | 0 | if (obj_datasec (abfd) != NULL) |
3875 | 0 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) |
3876 | 0 | ->map_head.link_order) |
3877 | 0 | * obj_reloc_entry_size (abfd)); |
3878 | 0 | } |
3879 | |
|
3880 | 0 | exec_hdr (abfd)->a_trsize = trsize; |
3881 | 0 | exec_hdr (abfd)->a_drsize = drsize; |
3882 | 0 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
3883 | | |
3884 | | /* Adjust the section sizes and vmas according to the magic number. |
3885 | | This sets a_text, a_data and a_bss in the exec_hdr and sets the |
3886 | | filepos for each section. */ |
3887 | 0 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
3888 | 0 | goto error_return; |
3889 | | |
3890 | | /* The relocation and symbol file positions differ among a.out |
3891 | | targets. We are passed a callback routine from the backend |
3892 | | specific code to handle this. |
3893 | | FIXME: At this point we do not know how much space the symbol |
3894 | | table will require. This will not work for any (nonstandard) |
3895 | | a.out target that needs to know the symbol table size before it |
3896 | | can compute the relocation file positions. */ |
3897 | 0 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, |
3898 | 0 | &aout_info.symoff); |
3899 | 0 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; |
3900 | 0 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; |
3901 | 0 | obj_sym_filepos (abfd) = aout_info.symoff; |
3902 | | |
3903 | | /* We keep a count of the symbols as we output them. */ |
3904 | 0 | obj_aout_external_sym_count (abfd) = 0; |
3905 | | |
3906 | | /* We accumulate the string table as we write out the symbols. */ |
3907 | 0 | aout_info.strtab = _bfd_stringtab_init (); |
3908 | 0 | if (aout_info.strtab == NULL) |
3909 | 0 | goto error_return; |
3910 | | |
3911 | | /* Allocate buffers to hold section contents and relocs. */ |
3912 | 0 | aout_info.contents = bfd_malloc (max_contents_size); |
3913 | 0 | aout_info.relocs = bfd_malloc (max_relocs_size); |
3914 | 0 | aout_info.symbol_map = bfd_malloc (max_sym_count * sizeof (int *)); |
3915 | 0 | aout_info.output_syms = bfd_malloc ((max_sym_count + 1) |
3916 | 0 | * sizeof (struct external_nlist)); |
3917 | 0 | if ((aout_info.contents == NULL && max_contents_size != 0) |
3918 | 0 | || (aout_info.relocs == NULL && max_relocs_size != 0) |
3919 | 0 | || (aout_info.symbol_map == NULL && max_sym_count != 0) |
3920 | 0 | || aout_info.output_syms == NULL) |
3921 | 0 | goto error_return; |
3922 | | |
3923 | | /* If we have a symbol named __DYNAMIC, force it out now. This is |
3924 | | required by SunOS. Doing this here rather than in sunos.c is a |
3925 | | hack, but it's easier than exporting everything which would be |
3926 | | needed. */ |
3927 | 0 | { |
3928 | 0 | struct aout_link_hash_entry *h; |
3929 | |
|
3930 | 0 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", |
3931 | 0 | false, false, false); |
3932 | 0 | if (h != NULL) |
3933 | 0 | aout_link_write_other_symbol (&h->root.root, &aout_info); |
3934 | 0 | } |
3935 | | |
3936 | | /* The most time efficient way to do the link would be to read all |
3937 | | the input object files into memory and then sort out the |
3938 | | information into the output file. Unfortunately, that will |
3939 | | probably use too much memory. Another method would be to step |
3940 | | through everything that composes the text section and write it |
3941 | | out, and then everything that composes the data section and write |
3942 | | it out, and then write out the relocs, and then write out the |
3943 | | symbols. Unfortunately, that requires reading stuff from each |
3944 | | input file several times, and we will not be able to keep all the |
3945 | | input files open simultaneously, and reopening them will be slow. |
3946 | | |
3947 | | What we do is basically process one input file at a time. We do |
3948 | | everything we need to do with an input file once--copy over the |
3949 | | section contents, handle the relocation information, and write |
3950 | | out the symbols--and then we throw away the information we read |
3951 | | from it. This approach requires a lot of lseeks of the output |
3952 | | file, which is unfortunate but still faster than reopening a lot |
3953 | | of files. |
3954 | | |
3955 | | We use the output_has_begun field of the input BFDs to see |
3956 | | whether we have already handled it. */ |
3957 | 0 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
3958 | 0 | sub->output_has_begun = false; |
3959 | | |
3960 | | /* Mark all sections which are to be included in the link. This |
3961 | | will normally be every section. We need to do this so that we |
3962 | | can identify any sections which the linker has decided to not |
3963 | | include. */ |
3964 | 0 | for (o = abfd->sections; o != NULL; o = o->next) |
3965 | 0 | { |
3966 | 0 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
3967 | 0 | if (p->type == bfd_indirect_link_order) |
3968 | 0 | p->u.indirect.section->linker_mark = true; |
3969 | 0 | } |
3970 | |
|
3971 | 0 | have_link_order_relocs = false; |
3972 | 0 | for (o = abfd->sections; o != NULL; o = o->next) |
3973 | 0 | { |
3974 | 0 | for (p = o->map_head.link_order; |
3975 | 0 | p != NULL; |
3976 | 0 | p = p->next) |
3977 | 0 | { |
3978 | 0 | if (p->type == bfd_indirect_link_order |
3979 | 0 | && (bfd_get_flavour (p->u.indirect.section->owner) |
3980 | 0 | == bfd_target_aout_flavour)) |
3981 | 0 | { |
3982 | 0 | bfd *input_bfd; |
3983 | |
|
3984 | 0 | input_bfd = p->u.indirect.section->owner; |
3985 | 0 | if (! input_bfd->output_has_begun) |
3986 | 0 | { |
3987 | 0 | if (! aout_link_input_bfd (&aout_info, input_bfd)) |
3988 | 0 | goto error_return; |
3989 | 0 | input_bfd->output_has_begun = true; |
3990 | 0 | } |
3991 | 0 | } |
3992 | 0 | else if (p->type == bfd_section_reloc_link_order |
3993 | 0 | || p->type == bfd_symbol_reloc_link_order) |
3994 | | /* These are handled below. */ |
3995 | 0 | have_link_order_relocs = true; |
3996 | 0 | else |
3997 | 0 | { |
3998 | 0 | if (! _bfd_default_link_order (abfd, info, o, p)) |
3999 | 0 | goto error_return; |
4000 | 0 | } |
4001 | 0 | } |
4002 | 0 | } |
4003 | | |
4004 | | /* Write out any symbols that we have not already written out. */ |
4005 | 0 | bfd_hash_traverse (&info->hash->table, |
4006 | 0 | aout_link_write_other_symbol, |
4007 | 0 | &aout_info); |
4008 | | |
4009 | | /* Now handle any relocs we were asked to create by the linker. |
4010 | | These did not come from any input file. We must do these after |
4011 | | we have written out all the symbols, so that we know the symbol |
4012 | | indices to use. */ |
4013 | 0 | if (have_link_order_relocs) |
4014 | 0 | { |
4015 | 0 | for (o = abfd->sections; o != NULL; o = o->next) |
4016 | 0 | { |
4017 | 0 | for (p = o->map_head.link_order; |
4018 | 0 | p != NULL; |
4019 | 0 | p = p->next) |
4020 | 0 | { |
4021 | 0 | if (p->type == bfd_section_reloc_link_order |
4022 | 0 | || p->type == bfd_symbol_reloc_link_order) |
4023 | 0 | { |
4024 | 0 | if (! aout_link_reloc_link_order (&aout_info, o, p)) |
4025 | 0 | goto error_return; |
4026 | 0 | } |
4027 | 0 | } |
4028 | 0 | } |
4029 | 0 | } |
4030 | | |
4031 | 0 | free (aout_info.contents); |
4032 | 0 | aout_info.contents = NULL; |
4033 | 0 | free (aout_info.relocs); |
4034 | 0 | aout_info.relocs = NULL; |
4035 | 0 | free (aout_info.symbol_map); |
4036 | 0 | aout_info.symbol_map = NULL; |
4037 | 0 | free (aout_info.output_syms); |
4038 | 0 | aout_info.output_syms = NULL; |
4039 | 0 | if (includes_hash_initialized) |
4040 | 0 | { |
4041 | 0 | bfd_hash_table_free (&aout_info.includes.root); |
4042 | 0 | includes_hash_initialized = false; |
4043 | 0 | } |
4044 | | |
4045 | | /* Finish up any dynamic linking we may be doing. */ |
4046 | 0 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) |
4047 | 0 | { |
4048 | 0 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) |
4049 | 0 | goto error_return; |
4050 | 0 | } |
4051 | | |
4052 | | /* Update the header information. */ |
4053 | 0 | abfd->symcount = obj_aout_external_sym_count (abfd); |
4054 | 0 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; |
4055 | 0 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; |
4056 | 0 | obj_textsec (abfd)->reloc_count = |
4057 | 0 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); |
4058 | 0 | obj_datasec (abfd)->reloc_count = |
4059 | 0 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); |
4060 | | |
4061 | | /* Write out the string table, unless there are no symbols. */ |
4062 | 0 | if (abfd->symcount > 0) |
4063 | 0 | { |
4064 | 0 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 |
4065 | 0 | || ! emit_stringtab (abfd, aout_info.strtab)) |
4066 | 0 | goto error_return; |
4067 | 0 | } |
4068 | 0 | else if (obj_textsec (abfd)->reloc_count == 0 |
4069 | 0 | && obj_datasec (abfd)->reloc_count == 0) |
4070 | 0 | { |
4071 | | /* The layout of a typical a.out file is header, text, data, |
4072 | | relocs, symbols, string table. When there are no relocs, |
4073 | | symbols or string table, the last thing in the file is data |
4074 | | and a_data may be rounded up. However we may have a smaller |
4075 | | sized .data section and thus not written final padding. The |
4076 | | same thing can happen with text if there is no data. Write |
4077 | | final padding here to extend the file. */ |
4078 | 0 | file_ptr pos = 0; |
4079 | |
|
4080 | 0 | if (exec_hdr (abfd)->a_data > obj_datasec (abfd)->size) |
4081 | 0 | pos = obj_datasec (abfd)->filepos + exec_hdr (abfd)->a_data; |
4082 | 0 | else if (obj_datasec (abfd)->size == 0 |
4083 | 0 | && exec_hdr (abfd)->a_text > obj_textsec (abfd)->size) |
4084 | 0 | pos = obj_textsec (abfd)->filepos + exec_hdr (abfd)->a_text; |
4085 | 0 | if (pos != 0) |
4086 | 0 | { |
4087 | 0 | bfd_byte b = 0; |
4088 | |
|
4089 | 0 | if (bfd_seek (abfd, pos - 1, SEEK_SET) != 0 |
4090 | 0 | || bfd_write (&b, 1, abfd) != 1) |
4091 | 0 | goto error_return; |
4092 | 0 | } |
4093 | 0 | } |
4094 | | |
4095 | 0 | return true; |
4096 | | |
4097 | 0 | error_return: |
4098 | 0 | free (aout_info.contents); |
4099 | 0 | free (aout_info.relocs); |
4100 | 0 | free (aout_info.symbol_map); |
4101 | 0 | free (aout_info.output_syms); |
4102 | 0 | if (includes_hash_initialized) |
4103 | 0 | bfd_hash_table_free (&aout_info.includes.root); |
4104 | 0 | return false; |
4105 | 0 | } |
4106 | | |
4107 | | /* Adjust and write out the symbols for an a.out file. Set the new |
4108 | | symbol indices into a symbol_map. */ |
4109 | | |
4110 | | static bool |
4111 | | aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
4112 | 0 | { |
4113 | 0 | bfd *output_bfd; |
4114 | 0 | bfd_size_type sym_count; |
4115 | 0 | char *strings; |
4116 | 0 | enum bfd_link_strip strip; |
4117 | 0 | enum bfd_link_discard discard; |
4118 | 0 | struct external_nlist *outsym; |
4119 | 0 | bfd_size_type strtab_index; |
4120 | 0 | struct external_nlist *sym; |
4121 | 0 | struct external_nlist *sym_end; |
4122 | 0 | struct aout_link_hash_entry **sym_hash; |
4123 | 0 | int *symbol_map; |
4124 | 0 | bool pass; |
4125 | 0 | bool skip_next; |
4126 | |
|
4127 | 0 | output_bfd = flaginfo->output_bfd; |
4128 | 0 | sym_count = obj_aout_external_sym_count (input_bfd); |
4129 | 0 | strings = obj_aout_external_strings (input_bfd); |
4130 | 0 | strip = flaginfo->info->strip; |
4131 | 0 | discard = flaginfo->info->discard; |
4132 | 0 | outsym = flaginfo->output_syms; |
4133 | | |
4134 | | /* First write out a symbol for this object file, unless we are |
4135 | | discarding such symbols. */ |
4136 | 0 | if (strip != strip_all |
4137 | 0 | && (strip != strip_some |
4138 | 0 | || bfd_hash_lookup (flaginfo->info->keep_hash, |
4139 | 0 | bfd_get_filename (input_bfd), |
4140 | 0 | false, false) != NULL) |
4141 | 0 | && discard != discard_all) |
4142 | 0 | { |
4143 | 0 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); |
4144 | 0 | H_PUT_8 (output_bfd, 0, outsym->e_ovly); |
4145 | 0 | H_PUT_16 (output_bfd, 0, outsym->e_desc); |
4146 | 0 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
4147 | 0 | bfd_get_filename (input_bfd), false); |
4148 | 0 | if (strtab_index == (bfd_size_type) -1) |
4149 | 0 | return false; |
4150 | 0 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4151 | 0 | PUT_WORD (output_bfd, |
4152 | 0 | (bfd_section_vma (obj_textsec (input_bfd)->output_section) |
4153 | 0 | + obj_textsec (input_bfd)->output_offset), |
4154 | 0 | outsym->e_value); |
4155 | 0 | ++obj_aout_external_sym_count (output_bfd); |
4156 | 0 | ++outsym; |
4157 | 0 | } |
4158 | | |
4159 | 0 | pass = false; |
4160 | 0 | skip_next = false; |
4161 | 0 | sym = obj_aout_external_syms (input_bfd); |
4162 | 0 | sym_end = sym + sym_count; |
4163 | 0 | sym_hash = obj_aout_sym_hashes (input_bfd); |
4164 | 0 | symbol_map = flaginfo->symbol_map; |
4165 | 0 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); |
4166 | 0 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) |
4167 | 0 | { |
4168 | 0 | const char *name; |
4169 | 0 | int type; |
4170 | 0 | struct aout_link_hash_entry *h; |
4171 | 0 | bool skip; |
4172 | 0 | asection *symsec; |
4173 | 0 | bfd_vma val = 0; |
4174 | 0 | bool copy; |
4175 | | |
4176 | | /* We set *symbol_map to 0 above for all symbols. If it has |
4177 | | already been set to -1 for this symbol, it means that we are |
4178 | | discarding it because it appears in a duplicate header file. |
4179 | | See the N_BINCL code below. */ |
4180 | 0 | if (*symbol_map == -1) |
4181 | 0 | continue; |
4182 | | |
4183 | | /* Initialize *symbol_map to -1, which means that the symbol was |
4184 | | not copied into the output file. We will change it later if |
4185 | | we do copy the symbol over. */ |
4186 | 0 | *symbol_map = -1; |
4187 | |
|
4188 | 0 | type = H_GET_8 (input_bfd, sym->e_type); |
4189 | 0 | name = strings + GET_WORD (input_bfd, sym->e_strx); |
4190 | |
|
4191 | 0 | h = NULL; |
4192 | |
|
4193 | 0 | if (pass) |
4194 | 0 | { |
4195 | | /* Pass this symbol through. It is the target of an |
4196 | | indirect or warning symbol. */ |
4197 | 0 | val = GET_WORD (input_bfd, sym->e_value); |
4198 | 0 | pass = false; |
4199 | 0 | } |
4200 | 0 | else if (skip_next) |
4201 | 0 | { |
4202 | | /* Skip this symbol, which is the target of an indirect |
4203 | | symbol that we have changed to no longer be an indirect |
4204 | | symbol. */ |
4205 | 0 | skip_next = false; |
4206 | 0 | continue; |
4207 | 0 | } |
4208 | 0 | else |
4209 | 0 | { |
4210 | 0 | struct aout_link_hash_entry *hresolve; |
4211 | | |
4212 | | /* We have saved the hash table entry for this symbol, if |
4213 | | there is one. Note that we could just look it up again |
4214 | | in the hash table, provided we first check that it is an |
4215 | | external symbol. */ |
4216 | 0 | h = *sym_hash; |
4217 | | |
4218 | | /* Use the name from the hash table, in case the symbol was |
4219 | | wrapped. */ |
4220 | 0 | if (h != NULL) |
4221 | 0 | name = h->root.root.string; |
4222 | | |
4223 | | /* If this is an indirect or warning symbol, then change |
4224 | | hresolve to the base symbol. We also change *sym_hash so |
4225 | | that the relocation routines relocate against the real |
4226 | | symbol. */ |
4227 | 0 | hresolve = h; |
4228 | 0 | if (h != NULL |
4229 | 0 | && (h->root.type == bfd_link_hash_indirect |
4230 | 0 | || h->root.type == bfd_link_hash_warning)) |
4231 | 0 | { |
4232 | 0 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; |
4233 | 0 | while (hresolve->root.type == bfd_link_hash_indirect |
4234 | 0 | || hresolve->root.type == bfd_link_hash_warning) |
4235 | 0 | hresolve = ((struct aout_link_hash_entry *) |
4236 | 0 | hresolve->root.u.i.link); |
4237 | 0 | *sym_hash = hresolve; |
4238 | 0 | } |
4239 | | |
4240 | | /* If the symbol has already been written out, skip it. */ |
4241 | 0 | if (h != NULL |
4242 | 0 | && h->root.type != bfd_link_hash_warning |
4243 | 0 | && h->written) |
4244 | 0 | { |
4245 | 0 | if ((type & N_TYPE) == N_INDR |
4246 | 0 | || type == N_WARNING) |
4247 | 0 | skip_next = true; |
4248 | 0 | *symbol_map = h->indx; |
4249 | 0 | continue; |
4250 | 0 | } |
4251 | | |
4252 | | /* See if we are stripping this symbol. */ |
4253 | 0 | skip = false; |
4254 | 0 | switch (strip) |
4255 | 0 | { |
4256 | 0 | case strip_none: |
4257 | 0 | break; |
4258 | 0 | case strip_debugger: |
4259 | 0 | if (is_stab (type, name)) |
4260 | 0 | skip = true; |
4261 | 0 | break; |
4262 | 0 | case strip_some: |
4263 | 0 | if (bfd_hash_lookup (flaginfo->info->keep_hash, name, |
4264 | 0 | false, false) == NULL) |
4265 | 0 | skip = true; |
4266 | 0 | break; |
4267 | 0 | case strip_all: |
4268 | 0 | skip = true; |
4269 | 0 | break; |
4270 | 0 | } |
4271 | 0 | if (skip) |
4272 | 0 | { |
4273 | 0 | if (h != NULL) |
4274 | 0 | h->written = true; |
4275 | 0 | continue; |
4276 | 0 | } |
4277 | | |
4278 | | /* Get the value of the symbol. */ |
4279 | 0 | if (is_stab (type, name)) |
4280 | 0 | { |
4281 | 0 | switch (type) |
4282 | 0 | { |
4283 | 0 | default: |
4284 | 0 | symsec = bfd_abs_section_ptr; |
4285 | 0 | break; |
4286 | 0 | case N_SO: |
4287 | 0 | case N_SOL: |
4288 | 0 | case N_FUN: |
4289 | 0 | case N_ENTRY: |
4290 | 0 | case N_SLINE: |
4291 | 0 | case N_FN: |
4292 | 0 | symsec = obj_textsec (input_bfd); |
4293 | 0 | break; |
4294 | 0 | case N_STSYM: |
4295 | 0 | case N_DSLINE: |
4296 | 0 | symsec = obj_datasec (input_bfd); |
4297 | 0 | break; |
4298 | 0 | case N_LCSYM: |
4299 | 0 | case N_BSLINE: |
4300 | 0 | symsec = obj_bsssec (input_bfd); |
4301 | 0 | break; |
4302 | 0 | } |
4303 | 0 | val = GET_WORD (input_bfd, sym->e_value); |
4304 | 0 | } |
4305 | 0 | else if ((type & N_TYPE) == N_TEXT |
4306 | 0 | || type == N_WEAKT) |
4307 | 0 | symsec = obj_textsec (input_bfd); |
4308 | 0 | else if ((type & N_TYPE) == N_DATA |
4309 | 0 | || type == N_WEAKD) |
4310 | 0 | symsec = obj_datasec (input_bfd); |
4311 | 0 | else if ((type & N_TYPE) == N_BSS |
4312 | 0 | || type == N_WEAKB) |
4313 | 0 | symsec = obj_bsssec (input_bfd); |
4314 | 0 | else if ((type & N_TYPE) == N_ABS |
4315 | 0 | || type == N_WEAKA) |
4316 | 0 | symsec = bfd_abs_section_ptr; |
4317 | 0 | else if (((type & N_TYPE) == N_INDR |
4318 | 0 | && (hresolve == NULL |
4319 | 0 | || (hresolve->root.type != bfd_link_hash_defined |
4320 | 0 | && hresolve->root.type != bfd_link_hash_defweak |
4321 | 0 | && hresolve->root.type != bfd_link_hash_common))) |
4322 | 0 | || type == N_WARNING) |
4323 | 0 | { |
4324 | | /* Pass the next symbol through unchanged. The |
4325 | | condition above for indirect symbols is so that if |
4326 | | the indirect symbol was defined, we output it with |
4327 | | the correct definition so the debugger will |
4328 | | understand it. */ |
4329 | 0 | pass = true; |
4330 | 0 | val = GET_WORD (input_bfd, sym->e_value); |
4331 | 0 | symsec = NULL; |
4332 | 0 | } |
4333 | 0 | else |
4334 | 0 | { |
4335 | | /* If we get here with an indirect symbol, it means that |
4336 | | we are outputting it with a real definition. In such |
4337 | | a case we do not want to output the next symbol, |
4338 | | which is the target of the indirection. */ |
4339 | 0 | if ((type & N_TYPE) == N_INDR) |
4340 | 0 | skip_next = true; |
4341 | |
|
4342 | 0 | symsec = NULL; |
4343 | | |
4344 | | /* We need to get the value from the hash table. We use |
4345 | | hresolve so that if we have defined an indirect |
4346 | | symbol we output the final definition. */ |
4347 | 0 | if (h == NULL) |
4348 | 0 | { |
4349 | 0 | switch (type & N_TYPE) |
4350 | 0 | { |
4351 | 0 | case N_SETT: |
4352 | 0 | symsec = obj_textsec (input_bfd); |
4353 | 0 | break; |
4354 | 0 | case N_SETD: |
4355 | 0 | symsec = obj_datasec (input_bfd); |
4356 | 0 | break; |
4357 | 0 | case N_SETB: |
4358 | 0 | symsec = obj_bsssec (input_bfd); |
4359 | 0 | break; |
4360 | 0 | case N_SETA: |
4361 | 0 | symsec = bfd_abs_section_ptr; |
4362 | 0 | break; |
4363 | 0 | default: |
4364 | 0 | val = 0; |
4365 | 0 | break; |
4366 | 0 | } |
4367 | 0 | } |
4368 | 0 | else if (hresolve->root.type == bfd_link_hash_defined |
4369 | 0 | || hresolve->root.type == bfd_link_hash_defweak) |
4370 | 0 | { |
4371 | 0 | asection *input_section; |
4372 | 0 | asection *output_section; |
4373 | | |
4374 | | /* This case usually means a common symbol which was |
4375 | | turned into a defined symbol. */ |
4376 | 0 | input_section = hresolve->root.u.def.section; |
4377 | 0 | output_section = input_section->output_section; |
4378 | 0 | BFD_ASSERT (bfd_is_abs_section (output_section) |
4379 | 0 | || output_section->owner == output_bfd); |
4380 | 0 | val = (hresolve->root.u.def.value |
4381 | 0 | + bfd_section_vma (output_section) |
4382 | 0 | + input_section->output_offset); |
4383 | | |
4384 | | /* Get the correct type based on the section. If |
4385 | | this is a constructed set, force it to be |
4386 | | globally visible. */ |
4387 | 0 | if (type == N_SETT |
4388 | 0 | || type == N_SETD |
4389 | 0 | || type == N_SETB |
4390 | 0 | || type == N_SETA) |
4391 | 0 | type |= N_EXT; |
4392 | |
|
4393 | 0 | type &=~ N_TYPE; |
4394 | |
|
4395 | 0 | if (output_section == obj_textsec (output_bfd)) |
4396 | 0 | type |= (hresolve->root.type == bfd_link_hash_defined |
4397 | 0 | ? N_TEXT |
4398 | 0 | : N_WEAKT); |
4399 | 0 | else if (output_section == obj_datasec (output_bfd)) |
4400 | 0 | type |= (hresolve->root.type == bfd_link_hash_defined |
4401 | 0 | ? N_DATA |
4402 | 0 | : N_WEAKD); |
4403 | 0 | else if (output_section == obj_bsssec (output_bfd)) |
4404 | 0 | type |= (hresolve->root.type == bfd_link_hash_defined |
4405 | 0 | ? N_BSS |
4406 | 0 | : N_WEAKB); |
4407 | 0 | else |
4408 | 0 | type |= (hresolve->root.type == bfd_link_hash_defined |
4409 | 0 | ? N_ABS |
4410 | 0 | : N_WEAKA); |
4411 | 0 | } |
4412 | 0 | else if (hresolve->root.type == bfd_link_hash_common) |
4413 | 0 | val = hresolve->root.u.c.size; |
4414 | 0 | else if (hresolve->root.type == bfd_link_hash_undefweak) |
4415 | 0 | { |
4416 | 0 | val = 0; |
4417 | 0 | type = N_WEAKU; |
4418 | 0 | } |
4419 | 0 | else |
4420 | 0 | val = 0; |
4421 | 0 | } |
4422 | 0 | if (symsec != NULL) |
4423 | 0 | val = (symsec->output_section->vma |
4424 | 0 | + symsec->output_offset |
4425 | 0 | + (GET_WORD (input_bfd, sym->e_value) |
4426 | 0 | - symsec->vma)); |
4427 | | |
4428 | | /* If this is a global symbol set the written flag, and if |
4429 | | it is a local symbol see if we should discard it. */ |
4430 | 0 | if (h != NULL) |
4431 | 0 | { |
4432 | 0 | h->written = true; |
4433 | 0 | h->indx = obj_aout_external_sym_count (output_bfd); |
4434 | 0 | } |
4435 | 0 | else if ((type & N_TYPE) != N_SETT |
4436 | 0 | && (type & N_TYPE) != N_SETD |
4437 | 0 | && (type & N_TYPE) != N_SETB |
4438 | 0 | && (type & N_TYPE) != N_SETA) |
4439 | 0 | { |
4440 | 0 | switch (discard) |
4441 | 0 | { |
4442 | 0 | case discard_none: |
4443 | 0 | case discard_sec_merge: |
4444 | 0 | break; |
4445 | 0 | case discard_l: |
4446 | 0 | if (!is_stab (type, name) |
4447 | 0 | && bfd_is_local_label_name (input_bfd, name)) |
4448 | 0 | skip = true; |
4449 | 0 | break; |
4450 | 0 | case discard_all: |
4451 | 0 | skip = true; |
4452 | 0 | break; |
4453 | 0 | } |
4454 | 0 | if (skip) |
4455 | 0 | { |
4456 | 0 | pass = false; |
4457 | 0 | continue; |
4458 | 0 | } |
4459 | 0 | } |
4460 | | |
4461 | | /* An N_BINCL symbol indicates the start of the stabs |
4462 | | entries for a header file. We need to scan ahead to the |
4463 | | next N_EINCL symbol, ignoring nesting, adding up all the |
4464 | | characters in the symbol names, not including the file |
4465 | | numbers in types (the first number after an open |
4466 | | parenthesis). */ |
4467 | 0 | if (type == N_BINCL) |
4468 | 0 | { |
4469 | 0 | struct external_nlist *incl_sym; |
4470 | 0 | int nest; |
4471 | 0 | struct aout_link_includes_entry *incl_entry; |
4472 | 0 | struct aout_link_includes_totals *t; |
4473 | |
|
4474 | 0 | val = 0; |
4475 | 0 | nest = 0; |
4476 | 0 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) |
4477 | 0 | { |
4478 | 0 | int incl_type; |
4479 | |
|
4480 | 0 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
4481 | 0 | if (incl_type == N_EINCL) |
4482 | 0 | { |
4483 | 0 | if (nest == 0) |
4484 | 0 | break; |
4485 | 0 | --nest; |
4486 | 0 | } |
4487 | 0 | else if (incl_type == N_BINCL) |
4488 | 0 | ++nest; |
4489 | 0 | else if (nest == 0) |
4490 | 0 | { |
4491 | 0 | const char *s; |
4492 | |
|
4493 | 0 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); |
4494 | 0 | for (; *s != '\0'; s++) |
4495 | 0 | { |
4496 | 0 | val += *s; |
4497 | 0 | if (*s == '(') |
4498 | 0 | { |
4499 | | /* Skip the file number. */ |
4500 | 0 | ++s; |
4501 | 0 | while (ISDIGIT (*s)) |
4502 | 0 | ++s; |
4503 | 0 | --s; |
4504 | 0 | } |
4505 | 0 | } |
4506 | 0 | } |
4507 | 0 | } |
4508 | | |
4509 | | /* If we have already included a header file with the |
4510 | | same value, then replace this one with an N_EXCL |
4511 | | symbol. */ |
4512 | 0 | copy = ! flaginfo->info->keep_memory; |
4513 | 0 | incl_entry = aout_link_includes_lookup (&flaginfo->includes, |
4514 | 0 | name, true, copy); |
4515 | 0 | if (incl_entry == NULL) |
4516 | 0 | return false; |
4517 | 0 | for (t = incl_entry->totals; t != NULL; t = t->next) |
4518 | 0 | if (t->total == val) |
4519 | 0 | break; |
4520 | 0 | if (t == NULL) |
4521 | 0 | { |
4522 | | /* This is the first time we have seen this header |
4523 | | file with this set of stabs strings. */ |
4524 | 0 | t = bfd_hash_allocate (&flaginfo->includes.root, |
4525 | 0 | sizeof *t); |
4526 | 0 | if (t == NULL) |
4527 | 0 | return false; |
4528 | 0 | t->total = val; |
4529 | 0 | t->next = incl_entry->totals; |
4530 | 0 | incl_entry->totals = t; |
4531 | 0 | } |
4532 | 0 | else |
4533 | 0 | { |
4534 | 0 | int *incl_map; |
4535 | | |
4536 | | /* This is a duplicate header file. We must change |
4537 | | it to be an N_EXCL entry, and mark all the |
4538 | | included symbols to prevent outputting them. */ |
4539 | 0 | type = N_EXCL; |
4540 | |
|
4541 | 0 | nest = 0; |
4542 | 0 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; |
4543 | 0 | incl_sym < sym_end; |
4544 | 0 | incl_sym++, incl_map++) |
4545 | 0 | { |
4546 | 0 | int incl_type; |
4547 | |
|
4548 | 0 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
4549 | 0 | if (incl_type == N_EINCL) |
4550 | 0 | { |
4551 | 0 | if (nest == 0) |
4552 | 0 | { |
4553 | 0 | *incl_map = -1; |
4554 | 0 | break; |
4555 | 0 | } |
4556 | 0 | --nest; |
4557 | 0 | } |
4558 | 0 | else if (incl_type == N_BINCL) |
4559 | 0 | ++nest; |
4560 | 0 | else if (nest == 0) |
4561 | 0 | *incl_map = -1; |
4562 | 0 | } |
4563 | 0 | } |
4564 | 0 | } |
4565 | 0 | } |
4566 | | |
4567 | | /* Copy this symbol into the list of symbols we are going to |
4568 | | write out. */ |
4569 | 0 | H_PUT_8 (output_bfd, type, outsym->e_type); |
4570 | 0 | H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_ovly), outsym->e_ovly); |
4571 | 0 | H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc); |
4572 | 0 | copy = false; |
4573 | 0 | if (! flaginfo->info->keep_memory) |
4574 | 0 | { |
4575 | | /* name points into a string table which we are going to |
4576 | | free. If there is a hash table entry, use that string. |
4577 | | Otherwise, copy name into memory. */ |
4578 | 0 | if (h != NULL) |
4579 | 0 | name = h->root.root.string; |
4580 | 0 | else |
4581 | 0 | copy = true; |
4582 | 0 | } |
4583 | 0 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
4584 | 0 | name, copy); |
4585 | 0 | if (strtab_index == (bfd_size_type) -1) |
4586 | 0 | return false; |
4587 | 0 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4588 | 0 | PUT_WORD (output_bfd, val, outsym->e_value); |
4589 | 0 | *symbol_map = obj_aout_external_sym_count (output_bfd); |
4590 | 0 | ++obj_aout_external_sym_count (output_bfd); |
4591 | 0 | ++outsym; |
4592 | 0 | } |
4593 | | |
4594 | | /* Write out the output symbols we have just constructed. */ |
4595 | 0 | if (outsym > flaginfo->output_syms) |
4596 | 0 | { |
4597 | 0 | bfd_size_type size; |
4598 | |
|
4599 | 0 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0) |
4600 | 0 | return false; |
4601 | 0 | size = outsym - flaginfo->output_syms; |
4602 | 0 | size *= EXTERNAL_NLIST_SIZE; |
4603 | 0 | if (bfd_write (flaginfo->output_syms, size, output_bfd) != size) |
4604 | 0 | return false; |
4605 | 0 | flaginfo->symoff += size; |
4606 | 0 | } |
4607 | | |
4608 | 0 | return true; |
4609 | 0 | } |
4610 | | |
4611 | | /* Write out a symbol that was not associated with an a.out input |
4612 | | object. */ |
4613 | | |
4614 | | static bfd_vma |
4615 | | bfd_getp32 (const void *p) |
4616 | 41.2k | { |
4617 | 41.2k | const bfd_byte *addr = p; |
4618 | 41.2k | unsigned long v; |
4619 | | |
4620 | 41.2k | v = (unsigned long) addr[1] << 24; |
4621 | 41.2k | v |= (unsigned long) addr[0] << 16; |
4622 | 41.2k | v |= (unsigned long) addr[3] << 8; |
4623 | 41.2k | v |= (unsigned long) addr[2]; |
4624 | 41.2k | return v; |
4625 | 41.2k | } |
4626 | | |
4627 | 0 | #define COERCE32(x) (((bfd_signed_vma) (x) ^ 0x80000000) - 0x80000000) |
4628 | | |
4629 | | static bfd_signed_vma |
4630 | | bfd_getp_signed_32 (const void *p) |
4631 | 0 | { |
4632 | 0 | const bfd_byte *addr = p; |
4633 | 0 | unsigned long v; |
4634 | |
|
4635 | 0 | v = (unsigned long) addr[1] << 24; |
4636 | 0 | v |= (unsigned long) addr[0] << 16; |
4637 | 0 | v |= (unsigned long) addr[3] << 8; |
4638 | 0 | v |= (unsigned long) addr[2]; |
4639 | 0 | return COERCE32 (v); |
4640 | 0 | } |
4641 | | |
4642 | | static void |
4643 | | bfd_putp32 (bfd_vma data, void *p) |
4644 | 0 | { |
4645 | 0 | bfd_byte *addr = p; |
4646 | |
|
4647 | 0 | addr[0] = (data >> 16) & 0xff; |
4648 | 0 | addr[1] = (data >> 24) & 0xff; |
4649 | 0 | addr[2] = (data >> 0) & 0xff; |
4650 | 0 | addr[3] = (data >> 8) & 0xff; |
4651 | 0 | } |
4652 | | |
4653 | | const bfd_target MY (vec) = |
4654 | | { |
4655 | | TARGETNAME, /* Name. */ |
4656 | | bfd_target_aout_flavour, |
4657 | | BFD_ENDIAN_LITTLE, /* Target byte order (little). */ |
4658 | | BFD_ENDIAN_LITTLE, /* Target headers byte order (little). */ |
4659 | | (HAS_RELOC | EXEC_P | /* Object flags. */ |
4660 | | HAS_LINENO | HAS_DEBUG | |
4661 | | HAS_SYMS | HAS_LOCALS | WP_TEXT), |
4662 | | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA), |
4663 | | MY_symbol_leading_char, |
4664 | | AR_PAD_CHAR, /* AR_pad_char. */ |
4665 | | 15, /* AR_max_namelen. */ |
4666 | | 0, /* match priority. */ |
4667 | | TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */ |
4668 | | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
4669 | | bfd_getp32, bfd_getp_signed_32, bfd_putp32, |
4670 | | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */ |
4671 | | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
4672 | | bfd_getp32, bfd_getp_signed_32, bfd_putp32, |
4673 | | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Headers. */ |
4674 | | { /* bfd_check_format. */ |
4675 | | _bfd_dummy_target, |
4676 | | MY_object_p, |
4677 | | bfd_generic_archive_p, |
4678 | | MY_core_file_p |
4679 | | }, |
4680 | | { /* bfd_set_format. */ |
4681 | | _bfd_bool_bfd_false_error, |
4682 | | MY_mkobject, |
4683 | | _bfd_generic_mkarchive, |
4684 | | _bfd_bool_bfd_false_error |
4685 | | }, |
4686 | | { /* bfd_write_contents. */ |
4687 | | _bfd_bool_bfd_false_error, |
4688 | | MY_write_object_contents, |
4689 | | _bfd_write_archive_contents, |
4690 | | _bfd_bool_bfd_false_error |
4691 | | }, |
4692 | | |
4693 | | BFD_JUMP_TABLE_GENERIC (MY), |
4694 | | BFD_JUMP_TABLE_COPY (MY), |
4695 | | BFD_JUMP_TABLE_CORE (MY), |
4696 | | BFD_JUMP_TABLE_ARCHIVE (MY), |
4697 | | BFD_JUMP_TABLE_SYMBOLS (MY), |
4698 | | BFD_JUMP_TABLE_RELOCS (MY), |
4699 | | BFD_JUMP_TABLE_WRITE (MY), |
4700 | | BFD_JUMP_TABLE_LINK (MY), |
4701 | | BFD_JUMP_TABLE_DYNAMIC (MY), |
4702 | | |
4703 | | /* Alternative_target. */ |
4704 | | NULL, |
4705 | | |
4706 | | (void *) MY_backend_data |
4707 | | }; |