Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* as.c - GAS main program. |
4b95cf5c | 2 | Copyright (C) 1987-2014 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 8 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
9 | any later version. |
10 | ||
ec2655a6 NC |
11 | GAS is distributed in the hope that it will be useful, but WITHOUT |
12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
14 | License for more details. | |
252b5132 RH |
15 | |
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
19 | 02110-1301, USA. */ | |
252b5132 | 20 | |
76b0a8c0 | 21 | /* Main program for AS; a 32-bit assembler of GNU. |
33948635 NC |
22 | Understands command arguments. |
23 | Has a few routines that don't fit in other modules because they | |
24 | are shared. | |
34bca508 | 25 | |
33948635 | 26 | bugs |
34bca508 | 27 | |
33948635 NC |
28 | : initialisers |
29 | Since no-one else says they will support them in future: I | |
30 | don't support them now. */ | |
252b5132 | 31 | |
252b5132 RH |
32 | #define COMMON |
33 | ||
34 | #include "as.h" | |
35 | #include "subsegs.h" | |
36 | #include "output-file.h" | |
37 | #include "sb.h" | |
38 | #include "macro.h" | |
bccba5f0 | 39 | #include "dwarf2dbg.h" |
54cfded0 | 40 | #include "dw2gencfi.h" |
b95d15c6 | 41 | #include "bfdver.h" |
b95d15c6 | 42 | |
84be4d71 ILT |
43 | #ifdef HAVE_ITBL_CPU |
44 | #include "itbl-ops.h" | |
45 | #else | |
252b5132 RH |
46 | #define itbl_init() |
47 | #endif | |
48 | ||
49 | #ifdef HAVE_SBRK | |
50 | #ifdef NEED_DECLARATION_SBRK | |
5a49b8ac | 51 | extern void *sbrk (); |
252b5132 RH |
52 | #endif |
53 | #endif | |
54 | ||
9cc92a36 NC |
55 | #ifdef USING_CGEN |
56 | /* Perform any cgen specific initialisation for gas. */ | |
33948635 | 57 | extern void gas_cgen_begin (void); |
9cc92a36 | 58 | #endif |
252b5132 | 59 | |
33948635 NC |
60 | /* We build a list of defsyms as we read the options, and then define |
61 | them after we have initialized everything. */ | |
62 | struct defsym_list | |
63 | { | |
64 | struct defsym_list *next; | |
65 | char *name; | |
66 | valueT value; | |
67 | }; | |
68 | ||
69 | ||
76b0a8c0 KH |
70 | /* True if a listing is wanted. */ |
71 | int listing; | |
252b5132 | 72 | |
252b5132 | 73 | /* Type of debugging to generate. */ |
4dc7ead9 | 74 | enum debug_info_type debug_type = DEBUG_UNSPECIFIED; |
05da4302 | 75 | int use_gnu_debug_info_extensions = 0; |
252b5132 | 76 | |
329e276d NC |
77 | #ifndef MD_DEBUG_FORMAT_SELECTOR |
78 | #define MD_DEBUG_FORMAT_SELECTOR NULL | |
79 | #endif | |
80 | static enum debug_info_type (*md_debug_format_selector) (int *) = MD_DEBUG_FORMAT_SELECTOR; | |
81 | ||
252b5132 | 82 | /* Maximum level of macro nesting. */ |
252b5132 RH |
83 | int max_macro_nest = 100; |
84 | ||
76b0a8c0 | 85 | /* argv[0] */ |
87c245cc | 86 | static char * myname; |
252b5132 RH |
87 | |
88 | /* The default obstack chunk size. If we set this to zero, the | |
89 | obstack code will use whatever will fit in a 4096 byte block. */ | |
90 | int chunksize = 0; | |
91 | ||
92 | /* To monitor memory allocation more effectively, make this non-zero. | |
93 | Then the chunk sizes for gas and bfd will be reduced. */ | |
94 | int debug_memory = 0; | |
95 | ||
54cfded0 AM |
96 | /* Enable verbose mode. */ |
97 | int verbose = 0; | |
98 | ||
58e8191c SA |
99 | /* Keep the output file. */ |
100 | int keep_it = 0; | |
101 | ||
33948635 NC |
102 | segT reg_section; |
103 | segT expr_section; | |
104 | segT text_section; | |
105 | segT data_section; | |
106 | segT bss_section; | |
252b5132 | 107 | |
33948635 NC |
108 | /* Name of listing file. */ |
109 | static char *listing_filename = NULL; | |
252b5132 RH |
110 | |
111 | static struct defsym_list *defsyms; | |
112 | ||
732f54cd JB |
113 | #ifdef HAVE_ITBL_CPU |
114 | /* Keep a record of the itbl files we read in. */ | |
115 | struct itbl_file_list | |
116 | { | |
117 | struct itbl_file_list *next; | |
118 | char *name; | |
119 | }; | |
33948635 | 120 | static struct itbl_file_list *itbl_files; |
732f54cd | 121 | #endif |
252b5132 | 122 | |
33948635 | 123 | static long start_time; |
ef8e09a0 SB |
124 | #ifdef HAVE_SBRK |
125 | char *start_sbrk; | |
126 | #endif | |
252b5132 | 127 | |
caa32fe5 NC |
128 | static int flag_macro_alternate; |
129 | ||
252b5132 | 130 | \f |
252b5132 RH |
131 | #ifdef USE_EMULATIONS |
132 | #define EMULATION_ENVIRON "AS_EMULATION" | |
133 | ||
134 | extern struct emulation mipsbelf, mipslelf, mipself; | |
4c63da97 | 135 | extern struct emulation i386coff, i386elf, i386aout; |
3bcbcc3d | 136 | extern struct emulation crisaout, criself; |
252b5132 RH |
137 | |
138 | static struct emulation *const emulations[] = { EMULATIONS }; | |
139 | static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]); | |
140 | ||
252b5132 | 141 | static void |
33948635 | 142 | select_emulation_mode (int argc, char **argv) |
252b5132 RH |
143 | { |
144 | int i; | |
145 | char *p, *em = 0; | |
146 | ||
147 | for (i = 1; i < argc; i++) | |
148 | if (!strncmp ("--em", argv[i], 4)) | |
149 | break; | |
150 | ||
151 | if (i == argc) | |
152 | goto do_default; | |
153 | ||
154 | p = strchr (argv[i], '='); | |
155 | if (p) | |
156 | p++; | |
157 | else | |
76b0a8c0 | 158 | p = argv[i + 1]; |
252b5132 RH |
159 | |
160 | if (!p || !*p) | |
161 | as_fatal (_("missing emulation mode name")); | |
162 | em = p; | |
163 | ||
164 | do_default: | |
165 | if (em == 0) | |
166 | em = getenv (EMULATION_ENVIRON); | |
167 | if (em == 0) | |
168 | em = DEFAULT_EMULATION; | |
169 | ||
170 | if (em) | |
171 | { | |
172 | for (i = 0; i < n_emulations; i++) | |
173 | if (!strcmp (emulations[i]->name, em)) | |
174 | break; | |
175 | if (i == n_emulations) | |
176 | as_fatal (_("unrecognized emulation name `%s'"), em); | |
177 | this_emulation = emulations[i]; | |
178 | } | |
179 | else | |
180 | this_emulation = emulations[0]; | |
181 | ||
182 | this_emulation->init (); | |
183 | } | |
184 | ||
185 | const char * | |
33948635 | 186 | default_emul_bfd_name (void) |
252b5132 RH |
187 | { |
188 | abort (); | |
189 | return NULL; | |
190 | } | |
191 | ||
192 | void | |
33948635 | 193 | common_emul_init (void) |
252b5132 RH |
194 | { |
195 | this_format = this_emulation->format; | |
196 | ||
197 | if (this_emulation->leading_underscore == 2) | |
198 | this_emulation->leading_underscore = this_format->dfl_leading_underscore; | |
199 | ||
200 | if (this_emulation->default_endian != 2) | |
201 | target_big_endian = this_emulation->default_endian; | |
202 | ||
203 | if (this_emulation->fake_label_name == 0) | |
204 | { | |
205 | if (this_emulation->leading_underscore) | |
206 | this_emulation->fake_label_name = "L0\001"; | |
207 | else | |
208 | /* What other parameters should we test? */ | |
209 | this_emulation->fake_label_name = ".L0\001"; | |
210 | } | |
211 | } | |
212 | #endif | |
213 | ||
4c63da97 | 214 | void |
33948635 | 215 | print_version_id (void) |
4c63da97 AM |
216 | { |
217 | static int printed; | |
33948635 | 218 | |
4c63da97 AM |
219 | if (printed) |
220 | return; | |
221 | printed = 1; | |
222 | ||
7be1c489 | 223 | fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s\n"), |
403487ec | 224 | VERSION, TARGET_ALIAS, BFD_VERSION_STRING); |
4c63da97 AM |
225 | } |
226 | ||
227 | static void | |
33948635 | 228 | show_usage (FILE * stream) |
4c63da97 AM |
229 | { |
230 | fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname); | |
231 | ||
232 | fprintf (stream, _("\ | |
233 | Options:\n\ | |
234 | -a[sub-option...] turn on listings\n\ | |
235 | Sub-options [default hls]:\n\ | |
236 | c omit false conditionals\n\ | |
237 | d omit debugging directives\n\ | |
83f10cb2 | 238 | g include general info\n\ |
4c63da97 AM |
239 | h include high-level source\n\ |
240 | l include assembly\n\ | |
241 | m include macro expansions\n\ | |
242 | n omit forms processing\n\ | |
243 | s include symbols\n\ | |
4c63da97 AM |
244 | =FILE list to FILE (must be last sub-option)\n")); |
245 | ||
caa32fe5 NC |
246 | fprintf (stream, _("\ |
247 | --alternate initially turn on alternate macro syntax\n")); | |
955974c6 | 248 | #ifdef HAVE_ZLIB_H |
4c63da97 | 249 | fprintf (stream, _("\ |
700c4060 CC |
250 | --compress-debug-sections\n\ |
251 | compress DWARF debug sections using zlib\n")); | |
252 | fprintf (stream, _("\ | |
253 | --nocompress-debug-sections\n\ | |
254 | don't compress DWARF debug sections\n")); | |
955974c6 | 255 | #endif /* HAVE_ZLIB_H */ |
700c4060 | 256 | fprintf (stream, _("\ |
4c63da97 AM |
257 | -D produce assembler debugging messages\n")); |
258 | fprintf (stream, _("\ | |
700c4060 CC |
259 | --debug-prefix-map OLD=NEW\n\ |
260 | map OLD to NEW in debug information\n")); | |
3d6b762c | 261 | fprintf (stream, _("\ |
4c63da97 AM |
262 | --defsym SYM=VAL define symbol SYM to given value\n")); |
263 | #ifdef USE_EMULATIONS | |
264 | { | |
265 | int i; | |
266 | char *def_em; | |
267 | ||
268 | fprintf (stream, "\ | |
269 | --em=["); | |
76b0a8c0 | 270 | for (i = 0; i < n_emulations - 1; i++) |
4c63da97 AM |
271 | fprintf (stream, "%s | ", emulations[i]->name); |
272 | fprintf (stream, "%s]\n", emulations[i]->name); | |
273 | ||
274 | def_em = getenv (EMULATION_ENVIRON); | |
76b0a8c0 | 275 | if (!def_em) |
4c63da97 AM |
276 | def_em = DEFAULT_EMULATION; |
277 | fprintf (stream, _("\ | |
278 | emulate output (default %s)\n"), def_em); | |
279 | } | |
68d55fe3 | 280 | #endif |
7be1c489 | 281 | #if defined OBJ_ELF || defined OBJ_MAYBE_ELF |
68d55fe3 JJ |
282 | fprintf (stream, _("\ |
283 | --execstack require executable stack for this object\n")); | |
284 | fprintf (stream, _("\ | |
285 | --noexecstack don't require executable stack for this object\n")); | |
21be61f5 L |
286 | fprintf (stream, _("\ |
287 | --size-check=[error|warning]\n\ | |
288 | ELF .size directive check (default --size-check=error)\n")); | |
4c63da97 AM |
289 | #endif |
290 | fprintf (stream, _("\ | |
291 | -f skip whitespace and comment preprocessing\n")); | |
292 | fprintf (stream, _("\ | |
329e276d NC |
293 | -g --gen-debug generate debugging information\n")); |
294 | fprintf (stream, _("\ | |
295 | --gstabs generate STABS debugging information\n")); | |
4c63da97 | 296 | fprintf (stream, _("\ |
329e276d | 297 | --gstabs+ generate STABS debug info with GNU extensions\n")); |
05da4302 | 298 | fprintf (stream, _("\ |
329e276d | 299 | --gdwarf-2 generate DWARF2 debugging information\n")); |
4c63da97 | 300 | fprintf (stream, _("\ |
b40bf0a2 NC |
301 | --gdwarf-sections generate per-function section names for DWARF line information\n")); |
302 | fprintf (stream, _("\ | |
4bdd3565 NC |
303 | --hash-size=<value> set the hash table size close to <value>\n")); |
304 | fprintf (stream, _("\ | |
4c63da97 AM |
305 | --help show this message and exit\n")); |
306 | fprintf (stream, _("\ | |
ea20a7da CC |
307 | --target-help show target specific options\n")); |
308 | fprintf (stream, _("\ | |
4c63da97 AM |
309 | -I DIR add DIR to search list for .include directives\n")); |
310 | fprintf (stream, _("\ | |
311 | -J don't warn about signed overflow\n")); | |
312 | fprintf (stream, _("\ | |
313 | -K warn when differences altered for long displacements\n")); | |
314 | fprintf (stream, _("\ | |
315 | -L,--keep-locals keep local symbols (e.g. starting with `L')\n")); | |
316 | fprintf (stream, _("\ | |
317 | -M,--mri assemble in MRI compatibility mode\n")); | |
318 | fprintf (stream, _("\ | |
319 | --MD FILE write dependency information in FILE (default none)\n")); | |
320 | fprintf (stream, _("\ | |
321 | -nocpp ignored\n")); | |
322 | fprintf (stream, _("\ | |
323 | -o OBJFILE name the object-file output OBJFILE (default a.out)\n")); | |
324 | fprintf (stream, _("\ | |
325 | -R fold data section into text section\n")); | |
326 | fprintf (stream, _("\ | |
4bdd3565 NC |
327 | --reduce-memory-overheads \n\ |
328 | prefer smaller memory use at the cost of longer\n\ | |
329 | assembly times\n")); | |
330 | fprintf (stream, _("\ | |
4c63da97 AM |
331 | --statistics print various measured statistics from execution\n")); |
332 | fprintf (stream, _("\ | |
333 | --strip-local-absolute strip local absolute symbols\n")); | |
334 | fprintf (stream, _("\ | |
335 | --traditional-format Use same format as native assembler when possible\n")); | |
336 | fprintf (stream, _("\ | |
337 | --version print assembler version number and exit\n")); | |
338 | fprintf (stream, _("\ | |
339 | -W --no-warn suppress warnings\n")); | |
340 | fprintf (stream, _("\ | |
341 | --warn don't suppress warnings\n")); | |
342 | fprintf (stream, _("\ | |
343 | --fatal-warnings treat warnings as errors\n")); | |
732f54cd | 344 | #ifdef HAVE_ITBL_CPU |
4c63da97 AM |
345 | fprintf (stream, _("\ |
346 | --itbl INSTTBL extend instruction set to include instructions\n\ | |
347 | matching the specifications defined in file INSTTBL\n")); | |
732f54cd | 348 | #endif |
4c63da97 AM |
349 | fprintf (stream, _("\ |
350 | -w ignored\n")); | |
351 | fprintf (stream, _("\ | |
352 | -X ignored\n")); | |
353 | fprintf (stream, _("\ | |
354 | -Z generate object file even after errors\n")); | |
355 | fprintf (stream, _("\ | |
356 | --listing-lhs-width set the width in words of the output data column of\n\ | |
357 | the listing\n")); | |
358 | fprintf (stream, _("\ | |
359 | --listing-lhs-width2 set the width in words of the continuation lines\n\ | |
360 | of the output data column; ignored if smaller than\n\ | |
361 | the width of the first line\n")); | |
362 | fprintf (stream, _("\ | |
363 | --listing-rhs-width set the max width in characters of the lines from\n\ | |
364 | the source file\n")); | |
365 | fprintf (stream, _("\ | |
366 | --listing-cont-lines set the maximum number of continuation lines used\n\ | |
367 | for the output data column of the listing\n")); | |
a55ff675 | 368 | fprintf (stream, _("\ |
34bca508 | 369 | @FILE read options from FILE\n")); |
4c63da97 AM |
370 | |
371 | md_show_usage (stream); | |
372 | ||
c20f4f8c | 373 | fputc ('\n', stream); |
92f01d61 JM |
374 | |
375 | if (REPORT_BUGS_TO[0] && stream == stdout) | |
376 | fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); | |
4c63da97 AM |
377 | } |
378 | ||
76b0a8c0 KH |
379 | /* Since it is easy to do here we interpret the special arg "-" |
380 | to mean "use stdin" and we set that argv[] pointing to "". | |
381 | After we have munged argv[], the only things left are source file | |
382 | name(s) and ""(s) denoting stdin. These file names are used | |
383 | (perhaps more than once) later. | |
384 | ||
385 | check for new machine-dep cmdline options in | |
386 | md_parse_option definitions in config/tc-*.c. */ | |
252b5132 RH |
387 | |
388 | static void | |
33948635 | 389 | parse_args (int * pargc, char *** pargv) |
252b5132 | 390 | { |
33948635 NC |
391 | int old_argc; |
392 | int new_argc; | |
393 | char ** old_argv; | |
394 | char ** new_argv; | |
252b5132 RH |
395 | /* Starting the short option string with '-' is for programs that |
396 | expect options and other ARGV-elements in any order and that care about | |
397 | the ordering of the two. We describe each non-option ARGV-element | |
398 | as if it were the argument of an option with character code 1. */ | |
252b5132 | 399 | char *shortopts; |
5a38dc70 | 400 | extern const char *md_shortopts; |
33948635 NC |
401 | static const char std_shortopts[] = |
402 | { | |
30a2b4ef | 403 | '-', 'J', |
252b5132 | 404 | #ifndef WORKING_DOT_WORD |
30a2b4ef KH |
405 | /* -K is not meaningful if .word is not being hacked. */ |
406 | 'K', | |
252b5132 | 407 | #endif |
8f94ae4d | 408 | 'L', 'M', 'R', 'W', 'Z', 'a', ':', ':', 'D', 'f', 'g', ':',':', 'I', ':', 'o', ':', |
252b5132 | 409 | #ifndef VMS |
30a2b4ef KH |
410 | /* -v takes an argument on VMS, so we don't make it a generic |
411 | option. */ | |
412 | 'v', | |
252b5132 | 413 | #endif |
30a2b4ef | 414 | 'w', 'X', |
732f54cd | 415 | #ifdef HAVE_ITBL_CPU |
33948635 | 416 | /* New option for extending instruction set (see also --itbl below). */ |
30a2b4ef | 417 | 't', ':', |
732f54cd | 418 | #endif |
30a2b4ef KH |
419 | '\0' |
420 | }; | |
252b5132 RH |
421 | struct option *longopts; |
422 | extern struct option md_longopts[]; | |
423 | extern size_t md_longopts_size; | |
33948635 NC |
424 | /* Codes used for the long options with no short synonyms. */ |
425 | enum option_values | |
426 | { | |
427 | OPTION_HELP = OPTION_STD_BASE, | |
428 | OPTION_NOCPP, | |
429 | OPTION_STATISTICS, | |
430 | OPTION_VERSION, | |
431 | OPTION_DUMPCONFIG, | |
432 | OPTION_VERBOSE, | |
433 | OPTION_EMULATION, | |
3d6b762c | 434 | OPTION_DEBUG_PREFIX_MAP, |
33948635 | 435 | OPTION_DEFSYM, |
33948635 NC |
436 | OPTION_LISTING_LHS_WIDTH, |
437 | OPTION_LISTING_LHS_WIDTH2, | |
438 | OPTION_LISTING_RHS_WIDTH, | |
439 | OPTION_LISTING_CONT_LINES, | |
440 | OPTION_DEPFILE, | |
441 | OPTION_GSTABS, | |
05da4302 | 442 | OPTION_GSTABS_PLUS, |
329e276d | 443 | OPTION_GDWARF2, |
b40bf0a2 | 444 | OPTION_GDWARF_SECTIONS, |
33948635 NC |
445 | OPTION_STRIP_LOCAL_ABSOLUTE, |
446 | OPTION_TRADITIONAL_FORMAT, | |
33948635 NC |
447 | OPTION_WARN, |
448 | OPTION_TARGET_HELP, | |
449 | OPTION_EXECSTACK, | |
450 | OPTION_NOEXECSTACK, | |
21be61f5 | 451 | OPTION_SIZE_CHECK, |
caa32fe5 | 452 | OPTION_ALTERNATE, |
5a14ab23 | 453 | OPTION_AL, |
4bdd3565 NC |
454 | OPTION_HASH_TABLE_SIZE, |
455 | OPTION_REDUCE_MEMORY_OVERHEADS, | |
0acf065b CC |
456 | OPTION_WARN_FATAL, |
457 | OPTION_COMPRESS_DEBUG, | |
458 | OPTION_NOCOMPRESS_DEBUG | |
329e276d NC |
459 | /* When you add options here, check that they do |
460 | not collide with OPTION_MD_BASE. See as.h. */ | |
33948635 | 461 | }; |
34bca508 | 462 | |
33948635 NC |
463 | static const struct option std_longopts[] = |
464 | { | |
329e276d | 465 | /* Note: commas are placed at the start of the line rather than |
cc643b88 | 466 | the end of the preceding line so that it is simpler to |
329e276d NC |
467 | selectively add and remove lines from this list. */ |
468 | {"alternate", no_argument, NULL, OPTION_ALTERNATE} | |
fb767913 NC |
469 | /* The entry for "a" is here to prevent getopt_long_only() from |
470 | considering that -a is an abbreviation for --alternate. This is | |
471 | necessary because -a=<FILE> is a valid switch but getopt would | |
472 | normally reject it since --alternate does not take an argument. */ | |
473 | ,{"a", optional_argument, NULL, 'a'} | |
5a14ab23 L |
474 | /* Handle -al=<FILE>. */ |
475 | ,{"al", optional_argument, NULL, OPTION_AL} | |
0acf065b CC |
476 | ,{"compress-debug-sections", no_argument, NULL, OPTION_COMPRESS_DEBUG} |
477 | ,{"nocompress-debug-sections", no_argument, NULL, OPTION_NOCOMPRESS_DEBUG} | |
3d6b762c | 478 | ,{"debug-prefix-map", required_argument, NULL, OPTION_DEBUG_PREFIX_MAP} |
329e276d NC |
479 | ,{"defsym", required_argument, NULL, OPTION_DEFSYM} |
480 | ,{"dump-config", no_argument, NULL, OPTION_DUMPCONFIG} | |
481 | ,{"emulation", required_argument, NULL, OPTION_EMULATION} | |
7be1c489 | 482 | #if defined OBJ_ELF || defined OBJ_MAYBE_ELF |
329e276d NC |
483 | ,{"execstack", no_argument, NULL, OPTION_EXECSTACK} |
484 | ,{"noexecstack", no_argument, NULL, OPTION_NOEXECSTACK} | |
21be61f5 | 485 | ,{"size-check", required_argument, NULL, OPTION_SIZE_CHECK} |
329e276d NC |
486 | #endif |
487 | ,{"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL} | |
488 | ,{"gdwarf-2", no_argument, NULL, OPTION_GDWARF2} | |
489 | /* GCC uses --gdwarf-2 but GAS uses to use --gdwarf2, | |
490 | so we keep it here for backwards compatibility. */ | |
491 | ,{"gdwarf2", no_argument, NULL, OPTION_GDWARF2} | |
b40bf0a2 | 492 | ,{"gdwarf-sections", no_argument, NULL, OPTION_GDWARF_SECTIONS} |
329e276d NC |
493 | ,{"gen-debug", no_argument, NULL, 'g'} |
494 | ,{"gstabs", no_argument, NULL, OPTION_GSTABS} | |
495 | ,{"gstabs+", no_argument, NULL, OPTION_GSTABS_PLUS} | |
4bdd3565 | 496 | ,{"hash-size", required_argument, NULL, OPTION_HASH_TABLE_SIZE} |
329e276d | 497 | ,{"help", no_argument, NULL, OPTION_HELP} |
732f54cd | 498 | #ifdef HAVE_ITBL_CPU |
252b5132 RH |
499 | /* New option for extending instruction set (see also -t above). |
500 | The "-t file" or "--itbl file" option extends the basic set of | |
501 | valid instructions by reading "file", a text file containing a | |
502 | list of instruction formats. The additional opcodes and their | |
503 | formats are added to the built-in set of instructions, and | |
504 | mnemonics for new registers may also be defined. */ | |
732f54cd JB |
505 | ,{"itbl", required_argument, NULL, 't'} |
506 | #endif | |
329e276d NC |
507 | /* getopt allows abbreviations, so we do this to stop it from |
508 | treating -k as an abbreviation for --keep-locals. Some | |
509 | ports use -k to enable PIC assembly. */ | |
510 | ,{"keep-locals", no_argument, NULL, 'L'} | |
511 | ,{"keep-locals", no_argument, NULL, 'L'} | |
512 | ,{"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH} | |
513 | ,{"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2} | |
514 | ,{"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH} | |
515 | ,{"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES} | |
516 | ,{"MD", required_argument, NULL, OPTION_DEPFILE} | |
517 | ,{"mri", no_argument, NULL, 'M'} | |
518 | ,{"nocpp", no_argument, NULL, OPTION_NOCPP} | |
519 | ,{"no-warn", no_argument, NULL, 'W'} | |
4bdd3565 | 520 | ,{"reduce-memory-overheads", no_argument, NULL, OPTION_REDUCE_MEMORY_OVERHEADS} |
329e276d NC |
521 | ,{"statistics", no_argument, NULL, OPTION_STATISTICS} |
522 | ,{"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE} | |
523 | ,{"version", no_argument, NULL, OPTION_VERSION} | |
524 | ,{"verbose", no_argument, NULL, OPTION_VERBOSE} | |
525 | ,{"target-help", no_argument, NULL, OPTION_TARGET_HELP} | |
526 | ,{"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT} | |
527 | ,{"warn", no_argument, NULL, OPTION_WARN} | |
252b5132 RH |
528 | }; |
529 | ||
beb2de9b AC |
530 | /* Construct the option lists from the standard list and the target |
531 | dependent list. Include space for an extra NULL option and | |
76b0a8c0 | 532 | always NULL terminate. */ |
252b5132 | 533 | shortopts = concat (std_shortopts, md_shortopts, (char *) NULL); |
1e9cc1c2 NC |
534 | longopts = (struct option *) xmalloc (sizeof (std_longopts) |
535 | + md_longopts_size + sizeof (struct option)); | |
252b5132 | 536 | memcpy (longopts, std_longopts, sizeof (std_longopts)); |
33948635 NC |
537 | memcpy (((char *) longopts) + sizeof (std_longopts), md_longopts, md_longopts_size); |
538 | memset (((char *) longopts) + sizeof (std_longopts) + md_longopts_size, | |
beb2de9b | 539 | 0, sizeof (struct option)); |
252b5132 RH |
540 | |
541 | /* Make a local copy of the old argv. */ | |
542 | old_argc = *pargc; | |
543 | old_argv = *pargv; | |
544 | ||
545 | /* Initialize a new argv that contains no options. */ | |
1e9cc1c2 | 546 | new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1)); |
252b5132 RH |
547 | new_argv[0] = old_argv[0]; |
548 | new_argc = 1; | |
549 | new_argv[new_argc] = NULL; | |
550 | ||
551 | while (1) | |
552 | { | |
553 | /* getopt_long_only is like getopt_long, but '-' as well as '--' can | |
554 | indicate a long option. */ | |
555 | int longind; | |
556 | int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts, | |
557 | &longind); | |
558 | ||
559 | if (optc == -1) | |
560 | break; | |
561 | ||
562 | switch (optc) | |
563 | { | |
564 | default: | |
565 | /* md_parse_option should return 1 if it recognizes optc, | |
566 | 0 if not. */ | |
567 | if (md_parse_option (optc, optarg) != 0) | |
568 | break; | |
569 | /* `-v' isn't included in the general short_opts list, so check for | |
47eebc20 | 570 | it explicitly here before deciding we've gotten a bad argument. */ |
252b5132 RH |
571 | if (optc == 'v') |
572 | { | |
573 | #ifdef VMS | |
574 | /* Telling getopt to treat -v's value as optional can result | |
575 | in it picking up a following filename argument here. The | |
576 | VMS code in md_parse_option can return 0 in that case, | |
577 | but it has no way of pushing the filename argument back. */ | |
578 | if (optarg && *optarg) | |
30a2b4ef | 579 | new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL; |
252b5132 RH |
580 | else |
581 | #else | |
582 | case 'v': | |
583 | #endif | |
584 | case OPTION_VERBOSE: | |
585 | print_version_id (); | |
54cfded0 | 586 | verbose = 1; |
252b5132 RH |
587 | break; |
588 | } | |
329e276d NC |
589 | else |
590 | as_bad (_("unrecognized option -%c%s"), optc, optarg ? optarg : ""); | |
76b0a8c0 | 591 | /* Fall through. */ |
252b5132 RH |
592 | |
593 | case '?': | |
594 | exit (EXIT_FAILURE); | |
595 | ||
596 | case 1: /* File name. */ | |
597 | if (!strcmp (optarg, "-")) | |
598 | optarg = ""; | |
599 | new_argv[new_argc++] = optarg; | |
600 | new_argv[new_argc] = NULL; | |
601 | break; | |
ef99799a | 602 | |
ea20a7da | 603 | case OPTION_TARGET_HELP: |
411863a4 KH |
604 | md_show_usage (stdout); |
605 | exit (EXIT_SUCCESS); | |
252b5132 RH |
606 | |
607 | case OPTION_HELP: | |
608 | show_usage (stdout); | |
609 | exit (EXIT_SUCCESS); | |
610 | ||
611 | case OPTION_NOCPP: | |
612 | break; | |
613 | ||
614 | case OPTION_STATISTICS: | |
615 | flag_print_statistics = 1; | |
616 | break; | |
617 | ||
618 | case OPTION_STRIP_LOCAL_ABSOLUTE: | |
619 | flag_strip_local_absolute = 1; | |
620 | break; | |
621 | ||
622 | case OPTION_TRADITIONAL_FORMAT: | |
623 | flag_traditional_format = 1; | |
624 | break; | |
625 | ||
626 | case OPTION_VERSION: | |
627 | /* This output is intended to follow the GNU standards document. */ | |
6c19f338 | 628 | printf (_("GNU assembler %s\n"), BFD_VERSION_STRING); |
4b95cf5c | 629 | printf (_("Copyright (C) 2014 Free Software Foundation, Inc.\n")); |
252b5132 RH |
630 | printf (_("\ |
631 | This program is free software; you may redistribute it under the terms of\n\ | |
ec2655a6 NC |
632 | the GNU General Public License version 3 or later.\n\ |
633 | This program has absolutely no warranty.\n")); | |
252b5132 RH |
634 | printf (_("This assembler was configured for a target of `%s'.\n"), |
635 | TARGET_ALIAS); | |
636 | exit (EXIT_SUCCESS); | |
637 | ||
638 | case OPTION_EMULATION: | |
639 | #ifdef USE_EMULATIONS | |
640 | if (strcmp (optarg, this_emulation->name)) | |
641 | as_fatal (_("multiple emulation names specified")); | |
642 | #else | |
643 | as_fatal (_("emulations not handled in this configuration")); | |
644 | #endif | |
645 | break; | |
646 | ||
647 | case OPTION_DUMPCONFIG: | |
648 | fprintf (stderr, _("alias = %s\n"), TARGET_ALIAS); | |
649 | fprintf (stderr, _("canonical = %s\n"), TARGET_CANONICAL); | |
650 | fprintf (stderr, _("cpu-type = %s\n"), TARGET_CPU); | |
651 | #ifdef TARGET_OBJ_FORMAT | |
652 | fprintf (stderr, _("format = %s\n"), TARGET_OBJ_FORMAT); | |
653 | #endif | |
654 | #ifdef TARGET_FORMAT | |
655 | fprintf (stderr, _("bfd-target = %s\n"), TARGET_FORMAT); | |
656 | #endif | |
657 | exit (EXIT_SUCCESS); | |
658 | ||
0acf065b | 659 | case OPTION_COMPRESS_DEBUG: |
955974c6 | 660 | #ifdef HAVE_ZLIB_H |
0acf065b | 661 | flag_compress_debug = 1; |
955974c6 CC |
662 | #else |
663 | as_warn (_("cannot compress debug sections (zlib not installed)")); | |
664 | #endif /* HAVE_ZLIB_H */ | |
0acf065b CC |
665 | break; |
666 | ||
667 | case OPTION_NOCOMPRESS_DEBUG: | |
668 | flag_compress_debug = 0; | |
669 | break; | |
670 | ||
3d6b762c JM |
671 | case OPTION_DEBUG_PREFIX_MAP: |
672 | add_debug_prefix_map (optarg); | |
673 | break; | |
674 | ||
252b5132 RH |
675 | case OPTION_DEFSYM: |
676 | { | |
677 | char *s; | |
a38cf1db | 678 | valueT i; |
252b5132 RH |
679 | struct defsym_list *n; |
680 | ||
681 | for (s = optarg; *s != '\0' && *s != '='; s++) | |
682 | ; | |
683 | if (*s == '\0') | |
684 | as_fatal (_("bad defsym; format is --defsym name=value")); | |
685 | *s++ = '\0'; | |
a38cf1db | 686 | i = bfd_scan_vma (s, (const char **) NULL, 0); |
1e9cc1c2 | 687 | n = (struct defsym_list *) xmalloc (sizeof *n); |
252b5132 RH |
688 | n->next = defsyms; |
689 | n->name = optarg; | |
690 | n->value = i; | |
691 | defsyms = n; | |
692 | } | |
693 | break; | |
694 | ||
732f54cd | 695 | #ifdef HAVE_ITBL_CPU |
252b5132 RH |
696 | case 't': |
697 | { | |
76b0a8c0 KH |
698 | /* optarg is the name of the file containing the instruction |
699 | formats, opcodes, register names, etc. */ | |
252b5132 RH |
700 | struct itbl_file_list *n; |
701 | ||
702 | if (optarg == NULL) | |
703 | { | |
0e389e77 | 704 | as_warn (_("no file name following -t option")); |
252b5132 RH |
705 | break; |
706 | } | |
76b0a8c0 | 707 | |
33948635 | 708 | n = xmalloc (sizeof * n); |
252b5132 RH |
709 | n->next = itbl_files; |
710 | n->name = optarg; | |
711 | itbl_files = n; | |
712 | ||
713 | /* Parse the file and add the new instructions to our internal | |
76b0a8c0 KH |
714 | table. If multiple instruction tables are specified, the |
715 | information from this table gets appended onto the existing | |
716 | internal table. */ | |
252b5132 RH |
717 | itbl_files->name = xstrdup (optarg); |
718 | if (itbl_parse (itbl_files->name) != 0) | |
0e389e77 AM |
719 | as_fatal (_("failed to read instruction table %s\n"), |
720 | itbl_files->name); | |
252b5132 RH |
721 | } |
722 | break; | |
732f54cd | 723 | #endif |
252b5132 RH |
724 | |
725 | case OPTION_DEPFILE: | |
726 | start_dependencies (optarg); | |
727 | break; | |
728 | ||
329e276d | 729 | case 'g': |
8f94ae4d NC |
730 | /* Some backends, eg Alpha and Mips, use the -g switch for their |
731 | own purposes. So we check here for an explicit -g and allow | |
329e276d NC |
732 | the backend to decide if it wants to process it. */ |
733 | if ( old_argv[optind - 1][1] == 'g' | |
329e276d NC |
734 | && md_parse_option (optc, optarg)) |
735 | continue; | |
736 | ||
737 | if (md_debug_format_selector) | |
738 | debug_type = md_debug_format_selector (& use_gnu_debug_info_extensions); | |
739 | else if (IS_ELF) | |
740 | debug_type = DEBUG_DWARF2; | |
741 | else | |
742 | debug_type = DEBUG_STABS; | |
743 | break; | |
744 | ||
05da4302 NC |
745 | case OPTION_GSTABS_PLUS: |
746 | use_gnu_debug_info_extensions = 1; | |
747 | /* Fall through. */ | |
252b5132 RH |
748 | case OPTION_GSTABS: |
749 | debug_type = DEBUG_STABS; | |
750 | break; | |
76b0a8c0 | 751 | |
fac0d250 RH |
752 | case OPTION_GDWARF2: |
753 | debug_type = DEBUG_DWARF2; | |
754 | break; | |
755 | ||
b40bf0a2 NC |
756 | case OPTION_GDWARF_SECTIONS: |
757 | flag_dwarf_sections = TRUE; | |
758 | break; | |
759 | ||
252b5132 RH |
760 | case 'J': |
761 | flag_signed_overflow_ok = 1; | |
762 | break; | |
763 | ||
764 | #ifndef WORKING_DOT_WORD | |
765 | case 'K': | |
766 | flag_warn_displacement = 1; | |
767 | break; | |
768 | #endif | |
252b5132 RH |
769 | case 'L': |
770 | flag_keep_locals = 1; | |
771 | break; | |
772 | ||
773 | case OPTION_LISTING_LHS_WIDTH: | |
76b0a8c0 | 774 | listing_lhs_width = atoi (optarg); |
252b5132 RH |
775 | if (listing_lhs_width_second < listing_lhs_width) |
776 | listing_lhs_width_second = listing_lhs_width; | |
777 | break; | |
778 | case OPTION_LISTING_LHS_WIDTH2: | |
779 | { | |
76b0a8c0 | 780 | int tmp = atoi (optarg); |
329e276d | 781 | |
252b5132 RH |
782 | if (tmp > listing_lhs_width) |
783 | listing_lhs_width_second = tmp; | |
784 | } | |
785 | break; | |
786 | case OPTION_LISTING_RHS_WIDTH: | |
76b0a8c0 | 787 | listing_rhs_width = atoi (optarg); |
252b5132 RH |
788 | break; |
789 | case OPTION_LISTING_CONT_LINES: | |
76b0a8c0 | 790 | listing_lhs_cont_lines = atoi (optarg); |
252b5132 RH |
791 | break; |
792 | ||
793 | case 'M': | |
794 | flag_mri = 1; | |
795 | #ifdef TC_M68K | |
796 | flag_m68k_mri = 1; | |
797 | #endif | |
798 | break; | |
799 | ||
800 | case 'R': | |
801 | flag_readonly_data_in_text = 1; | |
802 | break; | |
803 | ||
804 | case 'W': | |
805 | flag_no_warnings = 1; | |
806 | break; | |
807 | ||
2bdd6cf5 GK |
808 | case OPTION_WARN: |
809 | flag_no_warnings = 0; | |
810 | flag_fatal_warnings = 0; | |
811 | break; | |
812 | ||
813 | case OPTION_WARN_FATAL: | |
814 | flag_no_warnings = 0; | |
815 | flag_fatal_warnings = 1; | |
816 | break; | |
817 | ||
7be1c489 | 818 | #if defined OBJ_ELF || defined OBJ_MAYBE_ELF |
68d55fe3 JJ |
819 | case OPTION_EXECSTACK: |
820 | flag_execstack = 1; | |
821 | flag_noexecstack = 0; | |
822 | break; | |
823 | ||
824 | case OPTION_NOEXECSTACK: | |
825 | flag_noexecstack = 1; | |
826 | flag_execstack = 0; | |
827 | break; | |
21be61f5 L |
828 | |
829 | case OPTION_SIZE_CHECK: | |
830 | if (strcasecmp (optarg, "error") == 0) | |
831 | flag_size_check = size_check_error; | |
832 | else if (strcasecmp (optarg, "warning") == 0) | |
833 | flag_size_check = size_check_warning; | |
834 | else | |
835 | as_fatal (_("Invalid --size-check= option: `%s'"), optarg); | |
836 | break; | |
68d55fe3 | 837 | #endif |
252b5132 RH |
838 | case 'Z': |
839 | flag_always_generate_output = 1; | |
840 | break; | |
841 | ||
5a14ab23 L |
842 | case OPTION_AL: |
843 | listing |= LISTING_LISTING; | |
844 | if (optarg) | |
845 | listing_filename = xstrdup (optarg); | |
846 | break; | |
847 | ||
caa32fe5 NC |
848 | case OPTION_ALTERNATE: |
849 | optarg = old_argv [optind - 1]; | |
850 | while (* optarg == '-') | |
851 | optarg ++; | |
852 | ||
853 | if (strcmp (optarg, "alternate") == 0) | |
854 | { | |
855 | flag_macro_alternate = 1; | |
856 | break; | |
857 | } | |
858 | optarg ++; | |
859 | /* Fall through. */ | |
860 | ||
252b5132 RH |
861 | case 'a': |
862 | if (optarg) | |
863 | { | |
fb767913 NC |
864 | if (optarg != old_argv[optind] && optarg[-1] == '=') |
865 | --optarg; | |
866 | ||
7f6d05e8 CP |
867 | if (md_parse_option (optc, optarg) != 0) |
868 | break; | |
869 | ||
252b5132 RH |
870 | while (*optarg) |
871 | { | |
872 | switch (*optarg) | |
873 | { | |
874 | case 'c': | |
875 | listing |= LISTING_NOCOND; | |
876 | break; | |
877 | case 'd': | |
878 | listing |= LISTING_NODEBUG; | |
879 | break; | |
83f10cb2 NC |
880 | case 'g': |
881 | listing |= LISTING_GENERAL; | |
882 | break; | |
252b5132 RH |
883 | case 'h': |
884 | listing |= LISTING_HLL; | |
885 | break; | |
886 | case 'l': | |
887 | listing |= LISTING_LISTING; | |
888 | break; | |
889 | case 'm': | |
890 | listing |= LISTING_MACEXP; | |
891 | break; | |
892 | case 'n': | |
893 | listing |= LISTING_NOFORM; | |
894 | break; | |
895 | case 's': | |
896 | listing |= LISTING_SYMBOLS; | |
897 | break; | |
898 | case '=': | |
899 | listing_filename = xstrdup (optarg + 1); | |
900 | optarg += strlen (listing_filename); | |
901 | break; | |
902 | default: | |
903 | as_fatal (_("invalid listing option `%c'"), *optarg); | |
904 | break; | |
905 | } | |
906 | optarg++; | |
907 | } | |
908 | } | |
909 | if (!listing) | |
910 | listing = LISTING_DEFAULT; | |
911 | break; | |
912 | ||
913 | case 'D': | |
76b0a8c0 KH |
914 | /* DEBUG is implemented: it debugs different |
915 | things from other people's assemblers. */ | |
252b5132 RH |
916 | flag_debug = 1; |
917 | break; | |
918 | ||
919 | case 'f': | |
920 | flag_no_comments = 1; | |
921 | break; | |
922 | ||
923 | case 'I': | |
76b0a8c0 | 924 | { /* Include file directory. */ |
252b5132 | 925 | char *temp = xstrdup (optarg); |
329e276d | 926 | |
252b5132 RH |
927 | add_include_dir (temp); |
928 | break; | |
929 | } | |
930 | ||
931 | case 'o': | |
932 | out_file_name = xstrdup (optarg); | |
933 | break; | |
934 | ||
935 | case 'w': | |
936 | break; | |
937 | ||
938 | case 'X': | |
76b0a8c0 | 939 | /* -X means treat warnings as errors. */ |
252b5132 | 940 | break; |
4bdd3565 NC |
941 | |
942 | case OPTION_REDUCE_MEMORY_OVERHEADS: | |
943 | /* The only change we make at the moment is to reduce | |
944 | the size of the hash tables that we use. */ | |
945 | set_gas_hash_table_size (4051); | |
946 | break; | |
947 | ||
948 | case OPTION_HASH_TABLE_SIZE: | |
949 | { | |
f7a568ea | 950 | unsigned long new_size; |
4bdd3565 NC |
951 | |
952 | new_size = strtoul (optarg, NULL, 0); | |
953 | if (new_size) | |
954 | set_gas_hash_table_size (new_size); | |
955 | else | |
956 | as_fatal (_("--hash-size needs a numeric argument")); | |
957 | break; | |
958 | } | |
252b5132 RH |
959 | } |
960 | } | |
961 | ||
962 | free (shortopts); | |
963 | free (longopts); | |
964 | ||
965 | *pargc = new_argc; | |
966 | *pargv = new_argv; | |
acebd4ce AS |
967 | |
968 | #ifdef md_after_parse_args | |
969 | md_after_parse_args (); | |
970 | #endif | |
252b5132 RH |
971 | } |
972 | ||
33948635 NC |
973 | static void |
974 | dump_statistics (void) | |
975 | { | |
976 | #ifdef HAVE_SBRK | |
977 | char *lim = (char *) sbrk (0); | |
978 | #endif | |
979 | long run_time = get_run_time () - start_time; | |
980 | ||
981 | fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"), | |
982 | myname, run_time / 1000000, run_time % 1000000); | |
983 | #ifdef HAVE_SBRK | |
984 | fprintf (stderr, _("%s: data size %ld\n"), | |
ef8e09a0 | 985 | myname, (long) (lim - start_sbrk)); |
33948635 | 986 | #endif |
252b5132 | 987 | |
33948635 NC |
988 | subsegs_print_statistics (stderr); |
989 | write_print_statistics (stderr); | |
990 | symbol_print_statistics (stderr); | |
991 | read_print_statistics (stderr); | |
992 | ||
993 | #ifdef tc_print_statistics | |
994 | tc_print_statistics (stderr); | |
995 | #endif | |
996 | ||
997 | #ifdef obj_print_statistics | |
998 | obj_print_statistics (stderr); | |
999 | #endif | |
1000 | } | |
1001 | ||
0d474464 L |
1002 | static void |
1003 | close_output_file (void) | |
1004 | { | |
1005 | output_file_close (out_file_name); | |
58e8191c SA |
1006 | if (!keep_it) |
1007 | unlink_if_ordinary (out_file_name); | |
0d474464 | 1008 | } |
0d474464 | 1009 | |
33948635 NC |
1010 | /* The interface between the macro code and gas expression handling. */ |
1011 | ||
39a45edc AM |
1012 | static size_t |
1013 | macro_expr (const char *emsg, size_t idx, sb *in, offsetT *val) | |
33948635 NC |
1014 | { |
1015 | char *hold; | |
1016 | expressionS ex; | |
1017 | ||
1018 | sb_terminate (in); | |
1019 | ||
1020 | hold = input_line_pointer; | |
1021 | input_line_pointer = in->ptr + idx; | |
9497f5ac | 1022 | expression_and_evaluate (&ex); |
33948635 NC |
1023 | idx = input_line_pointer - in->ptr; |
1024 | input_line_pointer = hold; | |
1025 | ||
1026 | if (ex.X_op != O_constant) | |
1027 | as_bad ("%s", emsg); | |
1028 | ||
39a45edc | 1029 | *val = ex.X_add_number; |
33948635 NC |
1030 | |
1031 | return idx; | |
1032 | } | |
1033 | \f | |
1034 | /* Here to attempt 1 pass over each input file. | |
1035 | We scan argv[*] looking for filenames or exactly "" which is | |
1036 | shorthand for stdin. Any argv that is NULL is not a file-name. | |
1037 | We set need_pass_2 TRUE if, after this, we still have unresolved | |
1038 | expressions of the form (unknown value)+-(unknown value). | |
1039 | ||
1040 | Note the un*x semantics: there is only 1 logical input file, but it | |
1041 | may be a catenation of many 'physical' input files. */ | |
1042 | ||
1043 | static void | |
1044 | perform_an_assembly_pass (int argc, char ** argv) | |
1045 | { | |
1046 | int saw_a_file = 0; | |
bcf0aac6 | 1047 | #ifndef OBJ_MACH_O |
33948635 | 1048 | flagword applicable; |
bcf0aac6 | 1049 | #endif |
33948635 NC |
1050 | |
1051 | need_pass_2 = 0; | |
1052 | ||
bcf0aac6 | 1053 | #ifndef OBJ_MACH_O |
33948635 NC |
1054 | /* Create the standard sections, and those the assembler uses |
1055 | internally. */ | |
1056 | text_section = subseg_new (TEXT_SECTION_NAME, 0); | |
1057 | data_section = subseg_new (DATA_SECTION_NAME, 0); | |
1058 | bss_section = subseg_new (BSS_SECTION_NAME, 0); | |
1059 | /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed | |
1060 | to have relocs, otherwise we don't find out in time. */ | |
1061 | applicable = bfd_applicable_section_flags (stdoutput); | |
1062 | bfd_set_section_flags (stdoutput, text_section, | |
1063 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
1064 | | SEC_CODE | SEC_READONLY)); | |
1065 | bfd_set_section_flags (stdoutput, data_section, | |
1066 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
1067 | | SEC_DATA)); | |
1068 | bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC); | |
1069 | seg_info (bss_section)->bss = 1; | |
bcf0aac6 | 1070 | #endif |
33948635 NC |
1071 | subseg_new (BFD_ABS_SECTION_NAME, 0); |
1072 | subseg_new (BFD_UND_SECTION_NAME, 0); | |
1073 | reg_section = subseg_new ("*GAS `reg' section*", 0); | |
1074 | expr_section = subseg_new ("*GAS `expr' section*", 0); | |
1075 | ||
bcf0aac6 | 1076 | #ifndef OBJ_MACH_O |
33948635 | 1077 | subseg_set (text_section, 0); |
bcf0aac6 | 1078 | #endif |
33948635 NC |
1079 | |
1080 | /* This may add symbol table entries, which requires having an open BFD, | |
7be1c489 | 1081 | and sections already created. */ |
33948635 NC |
1082 | md_begin (); |
1083 | ||
1084 | #ifdef USING_CGEN | |
1085 | gas_cgen_begin (); | |
1086 | #endif | |
1087 | #ifdef obj_begin | |
1088 | obj_begin (); | |
1089 | #endif | |
1090 | ||
1091 | /* Skip argv[0]. */ | |
1092 | argv++; | |
1093 | argc--; | |
1094 | ||
1095 | while (argc--) | |
1096 | { | |
1097 | if (*argv) | |
1098 | { /* Is it a file-name argument? */ | |
1099 | PROGRESS (1); | |
1100 | saw_a_file++; | |
1101 | /* argv->"" if stdin desired, else->filename. */ | |
1102 | read_a_source_file (*argv); | |
1103 | } | |
1104 | argv++; /* Completed that argv. */ | |
1105 | } | |
1106 | if (!saw_a_file) | |
1107 | read_a_source_file (""); | |
1108 | } | |
1109 | \f | |
104d59d1 JM |
1110 | #ifdef OBJ_ELF |
1111 | static void | |
1112 | create_obj_attrs_section (void) | |
1113 | { | |
1114 | segT s; | |
1115 | char *p; | |
104d59d1 JM |
1116 | offsetT size; |
1117 | const char *name; | |
1118 | ||
1119 | size = bfd_elf_obj_attr_size (stdoutput); | |
1120 | if (size) | |
1121 | { | |
1122 | name = get_elf_backend_data (stdoutput)->obj_attrs_section; | |
1123 | if (!name) | |
1124 | name = ".gnu.attributes"; | |
1125 | s = subseg_new (name, 0); | |
1126 | elf_section_type (s) | |
1127 | = get_elf_backend_data (stdoutput)->obj_attrs_section_type; | |
1128 | bfd_set_section_flags (stdoutput, s, SEC_READONLY | SEC_DATA); | |
3d540e93 | 1129 | frag_now_fix (); |
104d59d1 JM |
1130 | p = frag_more (size); |
1131 | bfd_elf_set_obj_attr_contents (stdoutput, (bfd_byte *)p, size); | |
1132 | } | |
1133 | } | |
1134 | #endif | |
1135 | \f | |
a80076a1 | 1136 | |
76b0a8c0 | 1137 | int |
33948635 | 1138 | main (int argc, char ** argv) |
252b5132 | 1139 | { |
83f10cb2 NC |
1140 | char ** argv_orig = argv; |
1141 | ||
252b5132 | 1142 | int macro_strip_at; |
252b5132 RH |
1143 | |
1144 | start_time = get_run_time (); | |
ef8e09a0 SB |
1145 | #ifdef HAVE_SBRK |
1146 | start_sbrk = (char *) sbrk (0); | |
1147 | #endif | |
252b5132 RH |
1148 | |
1149 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
1150 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
1151 | #endif |
1152 | #if defined (HAVE_SETLOCALE) | |
1153 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
1154 | #endif |
1155 | bindtextdomain (PACKAGE, LOCALEDIR); | |
1156 | textdomain (PACKAGE); | |
1157 | ||
1158 | if (debug_memory) | |
091e58c1 | 1159 | chunksize = 64; |
252b5132 RH |
1160 | |
1161 | #ifdef HOST_SPECIAL_INIT | |
1162 | HOST_SPECIAL_INIT (argc, argv); | |
1163 | #endif | |
1164 | ||
1165 | myname = argv[0]; | |
1166 | xmalloc_set_program_name (myname); | |
1167 | ||
869b9d07 MM |
1168 | expandargv (&argc, &argv); |
1169 | ||
252b5132 RH |
1170 | START_PROGRESS (myname, 0); |
1171 | ||
1172 | #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME | |
1173 | #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out" | |
1174 | #endif | |
1175 | ||
1176 | out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME; | |
1177 | ||
1178 | hex_init (); | |
252b5132 RH |
1179 | bfd_init (); |
1180 | bfd_set_error_program_name (myname); | |
252b5132 RH |
1181 | |
1182 | #ifdef USE_EMULATIONS | |
1183 | select_emulation_mode (argc, argv); | |
1184 | #endif | |
1185 | ||
1186 | PROGRESS (1); | |
f7a568ea NC |
1187 | /* Call parse_args before any of the init/begin functions |
1188 | so that switches like --hash-size can be honored. */ | |
1189 | parse_args (&argc, &argv); | |
252b5132 RH |
1190 | symbol_begin (); |
1191 | frag_init (); | |
1192 | subsegs_begin (); | |
252b5132 RH |
1193 | read_begin (); |
1194 | input_scrub_begin (); | |
1195 | expr_begin (); | |
1196 | ||
0d474464 L |
1197 | /* It has to be called after dump_statistics (). */ |
1198 | xatexit (close_output_file); | |
0d474464 | 1199 | |
252b5132 RH |
1200 | if (flag_print_statistics) |
1201 | xatexit (dump_statistics); | |
1202 | ||
252b5132 RH |
1203 | macro_strip_at = 0; |
1204 | #ifdef TC_I960 | |
1205 | macro_strip_at = flag_mri; | |
1206 | #endif | |
252b5132 | 1207 | |
caa32fe5 | 1208 | macro_init (flag_macro_alternate, flag_mri, macro_strip_at, macro_expr); |
252b5132 RH |
1209 | |
1210 | PROGRESS (1); | |
1211 | ||
252b5132 | 1212 | output_file_create (out_file_name); |
9c2799c2 | 1213 | gas_assert (stdoutput != 0); |
252b5132 | 1214 | |
4a826962 MR |
1215 | dot_symbol_init (); |
1216 | ||
252b5132 RH |
1217 | #ifdef tc_init_after_args |
1218 | tc_init_after_args (); | |
1219 | #endif | |
1220 | ||
1221 | itbl_init (); | |
1222 | ||
1e9cc1c2 NC |
1223 | dwarf2_init (); |
1224 | ||
6885131b AM |
1225 | local_symbol_make (".gasversion.", absolute_section, |
1226 | BFD_VERSION / 10000UL, &predefined_address_frag); | |
00ce9deb | 1227 | |
252b5132 RH |
1228 | /* Now that we have fully initialized, and have created the output |
1229 | file, define any symbols requested by --defsym command line | |
1230 | arguments. */ | |
1231 | while (defsyms != NULL) | |
1232 | { | |
1233 | symbolS *sym; | |
1234 | struct defsym_list *next; | |
1235 | ||
1236 | sym = symbol_new (defsyms->name, absolute_section, defsyms->value, | |
1237 | &zero_address_frag); | |
bf083c64 NC |
1238 | /* Make symbols defined on the command line volatile, so that they |
1239 | can be redefined inside a source file. This makes this assembler's | |
1240 | behaviour compatible with earlier versions, but it may not be | |
1241 | completely intuitive. */ | |
1242 | S_SET_VOLATILE (sym); | |
252b5132 RH |
1243 | symbol_table_insert (sym); |
1244 | next = defsyms->next; | |
1245 | free (defsyms); | |
1246 | defsyms = next; | |
1247 | } | |
1248 | ||
1249 | PROGRESS (1); | |
1250 | ||
76b0a8c0 KH |
1251 | /* Assemble it. */ |
1252 | perform_an_assembly_pass (argc, argv); | |
252b5132 RH |
1253 | |
1254 | cond_finish_check (-1); | |
1255 | ||
1256 | #ifdef md_end | |
1257 | md_end (); | |
1258 | #endif | |
1259 | ||
104d59d1 | 1260 | #ifdef OBJ_ELF |
7ace4e4c JM |
1261 | if (IS_ELF) |
1262 | create_obj_attrs_section (); | |
104d59d1 JM |
1263 | #endif |
1264 | ||
7be1c489 | 1265 | #if defined OBJ_ELF || defined OBJ_MAYBE_ELF |
68d55fe3 JJ |
1266 | if ((flag_execstack || flag_noexecstack) |
1267 | && OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
1268 | { | |
1269 | segT gnustack; | |
1270 | ||
1271 | gnustack = subseg_new (".note.GNU-stack", 0); | |
1272 | bfd_set_section_flags (stdoutput, gnustack, | |
1273 | SEC_READONLY | (flag_execstack ? SEC_CODE : 0)); | |
34bca508 | 1274 | |
68d55fe3 JJ |
1275 | } |
1276 | #endif | |
1277 | ||
43ad3147 | 1278 | /* If we've been collecting dwarf2 .debug_line info, either for |
39bb5fe6 RH |
1279 | assembly debugging or on behalf of the compiler, emit it now. */ |
1280 | dwarf2_finish (); | |
1281 | ||
34bca508 | 1282 | /* If we constructed dwarf2 .eh_frame info, either via .cfi |
a4447b93 | 1283 | directives from the user or by the backend, emit it now. */ |
54cfded0 | 1284 | cfi_finish (); |
54cfded0 | 1285 | |
252b5132 RH |
1286 | if (seen_at_least_1_file () |
1287 | && (flag_always_generate_output || had_errors () == 0)) | |
1288 | keep_it = 1; | |
1289 | else | |
1290 | keep_it = 0; | |
1291 | ||
252b5132 RH |
1292 | /* This used to be done at the start of write_object_file in |
1293 | write.c, but that caused problems when doing listings when | |
1294 | keep_it was zero. This could probably be moved above md_end, but | |
1295 | I didn't want to risk the change. */ | |
1296 | subsegs_finish (); | |
252b5132 RH |
1297 | |
1298 | if (keep_it) | |
1299 | write_object_file (); | |
1300 | ||
7f6a71ff JM |
1301 | fflush (stderr); |
1302 | ||
252b5132 | 1303 | #ifndef NO_LISTING |
83f10cb2 | 1304 | listing_print (listing_filename, argv_orig); |
252b5132 RH |
1305 | #endif |
1306 | ||
76b0a8c0 KH |
1307 | if (flag_fatal_warnings && had_warnings () > 0 && had_errors () == 0) |
1308 | as_bad (_("%d warnings, treating warnings as errors"), had_warnings ()); | |
2bdd6cf5 | 1309 | |
252b5132 RH |
1310 | if (had_errors () > 0 && ! flag_always_generate_output) |
1311 | keep_it = 0; | |
1312 | ||
252b5132 RH |
1313 | input_scrub_end (); |
1314 | ||
1315 | END_PROGRESS (myname); | |
1316 | ||
1317 | /* Use xexit instead of return, because under VMS environments they | |
1318 | may not place the same interpretation on the value given. */ | |
1319 | if (had_errors () > 0) | |
1320 | xexit (EXIT_FAILURE); | |
1321 | ||
1322 | /* Only generate dependency file if assembler was successful. */ | |
1323 | print_dependencies (); | |
1324 | ||
1325 | xexit (EXIT_SUCCESS); | |
1326 | } |