1 /* as.c - GAS main program.
2 Copyright (C) 1987-2020 Free Software Foundation, Inc.
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
8 the Free Software Foundation; either version 3, or (at your option)
9 any later version.
10
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.
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
18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
19 02110-1301, USA. */
20
21 /* Main program for AS; a 32-bit assembler of GNU.
22 Understands command arguments.
23 Has a few routines that don't fit in other modules because they
24 are shared.
25
26 bugs
27
28 : initialisers
29 Since no-one else says they will support them in future: I
30 don't support them now. */
31
32 #define COMMON
33
34 /* Disable code to set FAKE_LABEL_NAME in obj-multi.h, to avoid circular
35 reference. */
36 #define INITIALIZING_EMULS
37
38 #include "as.h"
39 #include "subsegs.h"
40 #include "output-file.h"
41 #include "sb.h"
42 #include "macro.h"
43 #include "dwarf2dbg.h"
44 #include "dw2gencfi.h"
45 #include "bfdver.h"
46 #include "write.h"
47
48 #ifdef HAVE_ITBL_CPU
49 #include "itbl-ops.h"
50 #else
51 #define itbl_init()
52 #endif
53
54 #ifdef USING_CGEN
55 /* Perform any cgen specific initialisation for gas. */
56 extern void gas_cgen_begin (void);
57 #endif
58
59 /* We build a list of defsyms as we read the options, and then define
60 them after we have initialized everything. */
61 struct defsym_list
62 {
63 struct defsym_list *next;
64 char *name;
65 valueT value;
66 };
67
68
69 /* True if a listing is wanted. */
70 int listing;
71
72 /* Type of debugging to generate. */
73 enum debug_info_type debug_type = DEBUG_UNSPECIFIED;
74 int use_gnu_debug_info_extensions = 0;
75
76 #ifndef MD_DEBUG_FORMAT_SELECTOR
77 #define MD_DEBUG_FORMAT_SELECTOR NULL
78 #endif
79 static enum debug_info_type (*md_debug_format_selector) (int *) = MD_DEBUG_FORMAT_SELECTOR;
80
81 /* Maximum level of macro nesting. */
82 int max_macro_nest = 100;
83
84 /* argv[0] */
85 static char * myname;
86
87 /* The default obstack chunk size. If we set this to zero, the
88 obstack code will use whatever will fit in a 4096 byte block. */
89 int chunksize = 0;
90
91 /* To monitor memory allocation more effectively, make this non-zero.
92 Then the chunk sizes for gas and bfd will be reduced. */
93 int debug_memory = 0;
94
95 /* Enable verbose mode. */
96 int verbose = 0;
97
98 /* Which version of DWARF CIE to produce. This default value of -1
99 indicates that this value has not been set yet, a default value is
100 provided in dwarf2_init. A different value can also be supplied by the
101 command line flag --gdwarf-cie-version, or by a target in
102 MD_AFTER_PARSE_ARGS. */
103 int flag_dwarf_cie_version = -1;
104
105 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF
106 int flag_use_elf_stt_common = DEFAULT_GENERATE_ELF_STT_COMMON;
107 bfd_boolean flag_generate_build_notes = DEFAULT_GENERATE_BUILD_NOTES;
108 #endif
109
110 /* Keep the output file. */
111 static int keep_it = 0;
112
113 segT reg_section;
114 segT expr_section;
115 segT text_section;
116 segT data_section;
117 segT bss_section;
118
119 /* Name of listing file. */
120 static char *listing_filename = NULL;
121
122 static struct defsym_list *defsyms;
123
124 #ifdef HAVE_ITBL_CPU
125 /* Keep a record of the itbl files we read in. */
126 struct itbl_file_list
127 {
128 struct itbl_file_list *next;
129 char *name;
130 };
131 static struct itbl_file_list *itbl_files;
132 #endif
133
134 static long start_time;
135
136 static int flag_macro_alternate;
137
138
139 #ifdef USE_EMULATIONS
140 #define EMULATION_ENVIRON "AS_EMULATION"
141
142 extern struct emulation mipsbelf, mipslelf, mipself;
143 extern struct emulation i386coff, i386elf, i386aout;
144 extern struct emulation crisaout, criself;
145
146 static struct emulation *const emulations[] = { EMULATIONS };
147 static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]);
148
149 static void
select_emulation_mode(int argc,char ** argv)150 select_emulation_mode (int argc, char **argv)
151 {
152 int i;
153 char *p;
154 const char *em = NULL;
155
156 for (i = 1; i < argc; i++)
157 if (!strncmp ("--em", argv[i], 4))
158 break;
159
160 if (i == argc)
161 goto do_default;
162
163 p = strchr (argv[i], '=');
164 if (p)
165 p++;
166 else
167 p = argv[i + 1];
168
169 if (!p || !*p)
170 as_fatal (_("missing emulation mode name"));
171 em = p;
172
173 do_default:
174 if (em == 0)
175 em = getenv (EMULATION_ENVIRON);
176 if (em == 0)
177 em = DEFAULT_EMULATION;
178
179 if (em)
180 {
181 for (i = 0; i < n_emulations; i++)
182 if (!strcmp (emulations[i]->name, em))
183 break;
184 if (i == n_emulations)
185 as_fatal (_("unrecognized emulation name `%s'"), em);
186 this_emulation = emulations[i];
187 }
188 else
189 this_emulation = emulations[0];
190
191 this_emulation->init ();
192 }
193
194 const char *
default_emul_bfd_name(void)195 default_emul_bfd_name (void)
196 {
197 abort ();
198 return NULL;
199 }
200
201 void
common_emul_init(void)202 common_emul_init (void)
203 {
204 this_format = this_emulation->format;
205
206 if (this_emulation->leading_underscore == 2)
207 this_emulation->leading_underscore = this_format->dfl_leading_underscore;
208
209 if (this_emulation->default_endian != 2)
210 target_big_endian = this_emulation->default_endian;
211
212 if (this_emulation->fake_label_name == 0)
213 {
214 if (this_emulation->leading_underscore)
215 this_emulation->fake_label_name = FAKE_LABEL_NAME;
216 else
217 /* What other parameters should we test? */
218 this_emulation->fake_label_name = "." FAKE_LABEL_NAME;
219 }
220 }
221 #endif
222
223 void
print_version_id(void)224 print_version_id (void)
225 {
226 static int printed;
227
228 if (printed)
229 return;
230 printed = 1;
231
232 fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s\n"),
233 VERSION, TARGET_ALIAS, BFD_VERSION_STRING);
234 }
235
236 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG
237 enum compressed_debug_section_type flag_compress_debug
238 = COMPRESS_DEBUG_GABI_ZLIB;
239 #endif
240
241 static void
show_usage(FILE * stream)242 show_usage (FILE * stream)
243 {
244 fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname);
245
246 fprintf (stream, _("\
247 Options:\n\
248 -a[sub-option...] turn on listings\n\
249 Sub-options [default hls]:\n\
250 c omit false conditionals\n\
251 d omit debugging directives\n\
252 g include general info\n\
253 h include high-level source\n\
254 l include assembly\n\
255 m include macro expansions\n\
256 n omit forms processing\n\
257 s include symbols\n\
258 =FILE list to FILE (must be last sub-option)\n"));
259
260 fprintf (stream, _("\
261 --alternate initially turn on alternate macro syntax\n"));
262 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG
263 fprintf (stream, _("\
264 --compress-debug-sections[={none|zlib|zlib-gnu|zlib-gabi}]\n\
265 compress DWARF debug sections using zlib [default]\n"));
266 fprintf (stream, _("\
267 --nocompress-debug-sections\n\
268 don't compress DWARF debug sections\n"));
269 #else
270 fprintf (stream, _("\
271 --compress-debug-sections[={none|zlib|zlib-gnu|zlib-gabi}]\n\
272 compress DWARF debug sections using zlib\n"));
273 fprintf (stream, _("\
274 --nocompress-debug-sections\n\
275 don't compress DWARF debug sections [default]\n"));
276 #endif
277 fprintf (stream, _("\
278 -D produce assembler debugging messages\n"));
279 fprintf (stream, _("\
280 --debug-prefix-map OLD=NEW\n\
281 map OLD to NEW in debug information\n"));
282 fprintf (stream, _("\
283 --defsym SYM=VAL define symbol SYM to given value\n"));
284 #ifdef USE_EMULATIONS
285 {
286 int i;
287 const char *def_em;
288
289 fprintf (stream, "\
290 --em=[");
291 for (i = 0; i < n_emulations - 1; i++)
292 fprintf (stream, "%s | ", emulations[i]->name);
293 fprintf (stream, "%s]\n", emulations[i]->name);
294
295 def_em = getenv (EMULATION_ENVIRON);
296 if (!def_em)
297 def_em = DEFAULT_EMULATION;
298 fprintf (stream, _("\
299 emulate output (default %s)\n"), def_em);
300 }
301 #endif
302 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF
303 fprintf (stream, _("\
304 --execstack require executable stack for this object\n"));
305 fprintf (stream, _("\
306 --noexecstack don't require executable stack for this object\n"));
307 fprintf (stream, _("\
308 --size-check=[error|warning]\n\
309 ELF .size directive check (default --size-check=error)\n"));
310 fprintf (stream, _("\
311 --elf-stt-common=[no|yes] "));
312 if (DEFAULT_GENERATE_ELF_STT_COMMON)
313 fprintf (stream, _("(default: yes)\n"));
314 else
315 fprintf (stream, _("(default: no)\n"));
316 fprintf (stream, _("\
317 generate ELF common symbols with STT_COMMON type\n"));
318 fprintf (stream, _("\
319 --sectname-subst enable section name substitution sequences\n"));
320
321 fprintf (stream, _("\
322 --generate-missing-build-notes=[no|yes] "));
323 #if DEFAULT_GENERATE_BUILD_NOTES
324 fprintf (stream, _("(default: yes)\n"));
325 #else
326 fprintf (stream, _("(default: no)\n"));
327 #endif
328 fprintf (stream, _("\
329 generate GNU Build notes if none are present in the input\n"));
330 #endif /* OBJ_ELF */
331
332 fprintf (stream, _("\
333 -f skip whitespace and comment preprocessing\n"));
334 fprintf (stream, _("\
335 -g --gen-debug generate debugging information\n"));
336 fprintf (stream, _("\
337 --gstabs generate STABS debugging information\n"));
338 fprintf (stream, _("\
339 --gstabs+ generate STABS debug info with GNU extensions\n"));
340 fprintf (stream, _("\
341 --gdwarf-2 generate DWARF2 debugging information\n"));
342 fprintf (stream, _("\
343 --gdwarf-sections generate per-function section names for DWARF line information\n"));
344 fprintf (stream, _("\
345 --hash-size=<value> set the hash table size close to <value>\n"));
346 fprintf (stream, _("\
347 --help show this message and exit\n"));
348 fprintf (stream, _("\
349 --target-help show target specific options\n"));
350 fprintf (stream, _("\
351 -I DIR add DIR to search list for .include directives\n"));
352 fprintf (stream, _("\
353 -J don't warn about signed overflow\n"));
354 fprintf (stream, _("\
355 -K warn when differences altered for long displacements\n"));
356 fprintf (stream, _("\
357 -L,--keep-locals keep local symbols (e.g. starting with `L')\n"));
358 fprintf (stream, _("\
359 -M,--mri assemble in MRI compatibility mode\n"));
360 fprintf (stream, _("\
361 --MD FILE write dependency information in FILE (default none)\n"));
362 fprintf (stream, _("\
363 -nocpp ignored\n"));
364 fprintf (stream, _("\
365 -no-pad-sections do not pad the end of sections to alignment boundaries\n"));
366 fprintf (stream, _("\
367 -o OBJFILE name the object-file output OBJFILE (default a.out)\n"));
368 fprintf (stream, _("\
369 -R fold data section into text section\n"));
370 fprintf (stream, _("\
371 --reduce-memory-overheads \n\
372 prefer smaller memory use at the cost of longer\n\
373 assembly times\n"));
374 fprintf (stream, _("\
375 --statistics print various measured statistics from execution\n"));
376 fprintf (stream, _("\
377 --strip-local-absolute strip local absolute symbols\n"));
378 fprintf (stream, _("\
379 --traditional-format Use same format as native assembler when possible\n"));
380 fprintf (stream, _("\
381 --version print assembler version number and exit\n"));
382 fprintf (stream, _("\
383 -W --no-warn suppress warnings\n"));
384 fprintf (stream, _("\
385 --warn don't suppress warnings\n"));
386 fprintf (stream, _("\
387 --fatal-warnings treat warnings as errors\n"));
388 #ifdef HAVE_ITBL_CPU
389 fprintf (stream, _("\
390 --itbl INSTTBL extend instruction set to include instructions\n\
391 matching the specifications defined in file INSTTBL\n"));
392 #endif
393 fprintf (stream, _("\
394 -w ignored\n"));
395 fprintf (stream, _("\
396 -X ignored\n"));
397 fprintf (stream, _("\
398 -Z generate object file even after errors\n"));
399 fprintf (stream, _("\
400 --listing-lhs-width set the width in words of the output data column of\n\
401 the listing\n"));
402 fprintf (stream, _("\
403 --listing-lhs-width2 set the width in words of the continuation lines\n\
404 of the output data column; ignored if smaller than\n\
405 the width of the first line\n"));
406 fprintf (stream, _("\
407 --listing-rhs-width set the max width in characters of the lines from\n\
408 the source file\n"));
409 fprintf (stream, _("\
410 --listing-cont-lines set the maximum number of continuation lines used\n\
411 for the output data column of the listing\n"));
412 fprintf (stream, _("\
413 @FILE read options from FILE\n"));
414
415 md_show_usage (stream);
416
417 fputc ('\n', stream);
418
419 if (REPORT_BUGS_TO[0] && stream == stdout)
420 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
421 }
422
423 /* Since it is easy to do here we interpret the special arg "-"
424 to mean "use stdin" and we set that argv[] pointing to "".
425 After we have munged argv[], the only things left are source file
426 name(s) and ""(s) denoting stdin. These file names are used
427 (perhaps more than once) later.
428
429 check for new machine-dep cmdline options in
430 md_parse_option definitions in config/tc-*.c. */
431
432 static void
parse_args(int * pargc,char *** pargv)433 parse_args (int * pargc, char *** pargv)
434 {
435 int old_argc;
436 int new_argc;
437 char ** old_argv;
438 char ** new_argv;
439 /* Starting the short option string with '-' is for programs that
440 expect options and other ARGV-elements in any order and that care about
441 the ordering of the two. We describe each non-option ARGV-element
442 as if it were the argument of an option with character code 1. */
443 char *shortopts;
444 extern const char *md_shortopts;
445 static const char std_shortopts[] =
446 {
447 '-', 'J',
448 #ifndef WORKING_DOT_WORD
449 /* -K is not meaningful if .word is not being hacked. */
450 'K',
451 #endif
452 'L', 'M', 'R', 'W', 'Z', 'a', ':', ':', 'D', 'f', 'g', ':',':', 'I', ':', 'o', ':',
453 #ifndef VMS
454 /* -v takes an argument on VMS, so we don't make it a generic
455 option. */
456 'v',
457 #endif
458 'w', 'X',
459 #ifdef HAVE_ITBL_CPU
460 /* New option for extending instruction set (see also --itbl below). */
461 't', ':',
462 #endif
463 '\0'
464 };
465 struct option *longopts;
466 extern struct option md_longopts[];
467 extern size_t md_longopts_size;
468 /* Codes used for the long options with no short synonyms. */
469 enum option_values
470 {
471 OPTION_HELP = OPTION_STD_BASE,
472 OPTION_NOCPP,
473 OPTION_STATISTICS,
474 OPTION_VERSION,
475 OPTION_DUMPCONFIG,
476 OPTION_VERBOSE,
477 OPTION_EMULATION,
478 OPTION_DEBUG_PREFIX_MAP,
479 OPTION_DEFSYM,
480 OPTION_LISTING_LHS_WIDTH,
481 OPTION_LISTING_LHS_WIDTH2,
482 OPTION_LISTING_RHS_WIDTH,
483 OPTION_LISTING_CONT_LINES,
484 OPTION_DEPFILE,
485 OPTION_GSTABS,
486 OPTION_GSTABS_PLUS,
487 OPTION_GDWARF2,
488 OPTION_GDWARF_SECTIONS,
489 OPTION_GDWARF_CIE_VERSION,
490 OPTION_STRIP_LOCAL_ABSOLUTE,
491 OPTION_TRADITIONAL_FORMAT,
492 OPTION_WARN,
493 OPTION_TARGET_HELP,
494 OPTION_EXECSTACK,
495 OPTION_NOEXECSTACK,
496 OPTION_SIZE_CHECK,
497 OPTION_ELF_STT_COMMON,
498 OPTION_ELF_BUILD_NOTES,
499 OPTION_SECTNAME_SUBST,
500 OPTION_ALTERNATE,
501 OPTION_AL,
502 OPTION_HASH_TABLE_SIZE,
503 OPTION_REDUCE_MEMORY_OVERHEADS,
504 OPTION_WARN_FATAL,
505 OPTION_COMPRESS_DEBUG,
506 OPTION_NOCOMPRESS_DEBUG,
507 OPTION_NO_PAD_SECTIONS /* = STD_BASE + 40 */
508 /* When you add options here, check that they do
509 not collide with OPTION_MD_BASE. See as.h. */
510 };
511
512 static const struct option std_longopts[] =
513 {
514 /* Note: commas are placed at the start of the line rather than
515 the end of the preceding line so that it is simpler to
516 selectively add and remove lines from this list. */
517 {"alternate", no_argument, NULL, OPTION_ALTERNATE}
518 /* The entry for "a" is here to prevent getopt_long_only() from
519 considering that -a is an abbreviation for --alternate. This is
520 necessary because -a=<FILE> is a valid switch but getopt would
521 normally reject it since --alternate does not take an argument. */
522 ,{"a", optional_argument, NULL, 'a'}
523 /* Handle -al=<FILE>. */
524 ,{"al", optional_argument, NULL, OPTION_AL}
525 ,{"compress-debug-sections", optional_argument, NULL, OPTION_COMPRESS_DEBUG}
526 ,{"nocompress-debug-sections", no_argument, NULL, OPTION_NOCOMPRESS_DEBUG}
527 ,{"debug-prefix-map", required_argument, NULL, OPTION_DEBUG_PREFIX_MAP}
528 ,{"defsym", required_argument, NULL, OPTION_DEFSYM}
529 ,{"dump-config", no_argument, NULL, OPTION_DUMPCONFIG}
530 ,{"emulation", required_argument, NULL, OPTION_EMULATION}
531 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF
532 ,{"execstack", no_argument, NULL, OPTION_EXECSTACK}
533 ,{"noexecstack", no_argument, NULL, OPTION_NOEXECSTACK}
534 ,{"size-check", required_argument, NULL, OPTION_SIZE_CHECK}
535 ,{"elf-stt-common", required_argument, NULL, OPTION_ELF_STT_COMMON}
536 ,{"sectname-subst", no_argument, NULL, OPTION_SECTNAME_SUBST}
537 ,{"generate-missing-build-notes", required_argument, NULL, OPTION_ELF_BUILD_NOTES}
538 #endif
539 ,{"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}
540 ,{"gdwarf-2", no_argument, NULL, OPTION_GDWARF2}
541 /* GCC uses --gdwarf-2 but GAS uses to use --gdwarf2,
542 so we keep it here for backwards compatibility. */
543 ,{"gdwarf2", no_argument, NULL, OPTION_GDWARF2}
544 ,{"gdwarf-sections", no_argument, NULL, OPTION_GDWARF_SECTIONS}
545 ,{"gdwarf-cie-version", required_argument, NULL, OPTION_GDWARF_CIE_VERSION}
546 ,{"gen-debug", no_argument, NULL, 'g'}
547 ,{"gstabs", no_argument, NULL, OPTION_GSTABS}
548 ,{"gstabs+", no_argument, NULL, OPTION_GSTABS_PLUS}
549 ,{"hash-size", required_argument, NULL, OPTION_HASH_TABLE_SIZE}
550 ,{"help", no_argument, NULL, OPTION_HELP}
551 #ifdef HAVE_ITBL_CPU
552 /* New option for extending instruction set (see also -t above).
553 The "-t file" or "--itbl file" option extends the basic set of
554 valid instructions by reading "file", a text file containing a
555 list of instruction formats. The additional opcodes and their
556 formats are added to the built-in set of instructions, and
557 mnemonics for new registers may also be defined. */
558 ,{"itbl", required_argument, NULL, 't'}
559 #endif
560 /* getopt allows abbreviations, so we do this to stop it from
561 treating -k as an abbreviation for --keep-locals. Some
562 ports use -k to enable PIC assembly. */
563 ,{"keep-locals", no_argument, NULL, 'L'}
564 ,{"keep-locals", no_argument, NULL, 'L'}
565 ,{"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH}
566 ,{"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2}
567 ,{"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH}
568 ,{"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES}
569 ,{"MD", required_argument, NULL, OPTION_DEPFILE}
570 ,{"mri", no_argument, NULL, 'M'}
571 ,{"nocpp", no_argument, NULL, OPTION_NOCPP}
572 ,{"no-pad-sections", no_argument, NULL, OPTION_NO_PAD_SECTIONS}
573 ,{"no-warn", no_argument, NULL, 'W'}
574 ,{"reduce-memory-overheads", no_argument, NULL, OPTION_REDUCE_MEMORY_OVERHEADS}
575 ,{"statistics", no_argument, NULL, OPTION_STATISTICS}
576 ,{"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE}
577 ,{"version", no_argument, NULL, OPTION_VERSION}
578 ,{"verbose", no_argument, NULL, OPTION_VERBOSE}
579 ,{"target-help", no_argument, NULL, OPTION_TARGET_HELP}
580 ,{"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}
581 ,{"warn", no_argument, NULL, OPTION_WARN}
582 };
583
584 /* Construct the option lists from the standard list and the target
585 dependent list. Include space for an extra NULL option and
586 always NULL terminate. */
587 shortopts = concat (std_shortopts, md_shortopts, (char *) NULL);
588 longopts = (struct option *) xmalloc (sizeof (std_longopts)
589 + md_longopts_size + sizeof (struct option));
590 memcpy (longopts, std_longopts, sizeof (std_longopts));
591 memcpy (((char *) longopts) + sizeof (std_longopts), md_longopts, md_longopts_size);
592 memset (((char *) longopts) + sizeof (std_longopts) + md_longopts_size,
593 0, sizeof (struct option));
594
595 /* Make a local copy of the old argv. */
596 old_argc = *pargc;
597 old_argv = *pargv;
598
599 /* Initialize a new argv that contains no options. */
600 new_argv = XNEWVEC (char *, old_argc + 1);
601 new_argv[0] = old_argv[0];
602 new_argc = 1;
603 new_argv[new_argc] = NULL;
604
605 while (1)
606 {
607 /* getopt_long_only is like getopt_long, but '-' as well as '--' can
608 indicate a long option. */
609 int longind;
610 int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts,
611 &longind);
612
613 if (optc == -1)
614 break;
615
616 switch (optc)
617 {
618 default:
619 /* md_parse_option should return 1 if it recognizes optc,
620 0 if not. */
621 if (md_parse_option (optc, optarg) != 0)
622 break;
623 /* `-v' isn't included in the general short_opts list, so check for
624 it explicitly here before deciding we've gotten a bad argument. */
625 if (optc == 'v')
626 {
627 #ifdef VMS
628 /* Telling getopt to treat -v's value as optional can result
629 in it picking up a following filename argument here. The
630 VMS code in md_parse_option can return 0 in that case,
631 but it has no way of pushing the filename argument back. */
632 if (optarg && *optarg)
633 new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL;
634 else
635 #else
636 case 'v':
637 #endif
638 case OPTION_VERBOSE:
639 print_version_id ();
640 verbose = 1;
641 break;
642 }
643 else
644 as_bad (_("unrecognized option -%c%s"), optc, optarg ? optarg : "");
645 /* Fall through. */
646
647 case '?':
648 exit (EXIT_FAILURE);
649
650 case 1: /* File name. */
651 if (!strcmp (optarg, "-"))
652 optarg = (char *) "";
653 new_argv[new_argc++] = optarg;
654 new_argv[new_argc] = NULL;
655 break;
656
657 case OPTION_TARGET_HELP:
658 md_show_usage (stdout);
659 exit (EXIT_SUCCESS);
660
661 case OPTION_HELP:
662 show_usage (stdout);
663 exit (EXIT_SUCCESS);
664
665 case OPTION_NOCPP:
666 break;
667
668 case OPTION_NO_PAD_SECTIONS:
669 do_not_pad_sections_to_alignment = 1;
670 break;
671
672 case OPTION_STATISTICS:
673 flag_print_statistics = 1;
674 break;
675
676 case OPTION_STRIP_LOCAL_ABSOLUTE:
677 flag_strip_local_absolute = 1;
678 break;
679
680 case OPTION_TRADITIONAL_FORMAT:
681 flag_traditional_format = 1;
682 break;
683
684 case OPTION_VERSION:
685 /* This output is intended to follow the GNU standards document. */
686 printf (_("GNU assembler %s\n"), BFD_VERSION_STRING);
687 printf (_("Copyright (C) 2020 Free Software Foundation, Inc.\n"));
688 printf (_("\
689 This program is free software; you may redistribute it under the terms of\n\
690 the GNU General Public License version 3 or later.\n\
691 This program has absolutely no warranty.\n"));
692 #ifdef TARGET_WITH_CPU
693 printf (_("This assembler was configured for a target of `%s' "
694 "and default,\ncpu type `%s'.\n"),
695 TARGET_ALIAS, TARGET_WITH_CPU);
696 #else
697 printf (_("This assembler was configured for a target of `%s'.\n"),
698 TARGET_ALIAS);
699 #endif
700 exit (EXIT_SUCCESS);
701
702 case OPTION_EMULATION:
703 #ifdef USE_EMULATIONS
704 if (strcmp (optarg, this_emulation->name))
705 as_fatal (_("multiple emulation names specified"));
706 #else
707 as_fatal (_("emulations not handled in this configuration"));
708 #endif
709 break;
710
711 case OPTION_DUMPCONFIG:
712 fprintf (stderr, _("alias = %s\n"), TARGET_ALIAS);
713 fprintf (stderr, _("canonical = %s\n"), TARGET_CANONICAL);
714 fprintf (stderr, _("cpu-type = %s\n"), TARGET_CPU);
715 #ifdef TARGET_OBJ_FORMAT
716 fprintf (stderr, _("format = %s\n"), TARGET_OBJ_FORMAT);
717 #endif
718 #ifdef TARGET_FORMAT
719 fprintf (stderr, _("bfd-target = %s\n"), TARGET_FORMAT);
720 #endif
721 exit (EXIT_SUCCESS);
722
723 case OPTION_COMPRESS_DEBUG:
724 if (optarg)
725 {
726 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF
727 if (strcasecmp (optarg, "none") == 0)
728 flag_compress_debug = COMPRESS_DEBUG_NONE;
729 else if (strcasecmp (optarg, "zlib") == 0)
730 flag_compress_debug = COMPRESS_DEBUG_GABI_ZLIB;
731 else if (strcasecmp (optarg, "zlib-gnu") == 0)
732 flag_compress_debug = COMPRESS_DEBUG_GNU_ZLIB;
733 else if (strcasecmp (optarg, "zlib-gabi") == 0)
734 flag_compress_debug = COMPRESS_DEBUG_GABI_ZLIB;
735 else
736 as_fatal (_("Invalid --compress-debug-sections option: `%s'"),
737 optarg);
738 #else
739 as_fatal (_("--compress-debug-sections=%s is unsupported"),
740 optarg);
741 #endif
742 }
743 else
744 flag_compress_debug = COMPRESS_DEBUG_GABI_ZLIB;
745 break;
746
747 case OPTION_NOCOMPRESS_DEBUG:
748 flag_compress_debug = COMPRESS_DEBUG_NONE;
749 break;
750
751 case OPTION_DEBUG_PREFIX_MAP:
752 add_debug_prefix_map (optarg);
753 break;
754
755 case OPTION_DEFSYM:
756 {
757 char *s;
758 valueT i;
759 struct defsym_list *n;
760
761 for (s = optarg; *s != '\0' && *s != '='; s++)
762 ;
763 if (*s == '\0')
764 as_fatal (_("bad defsym; format is --defsym name=value"));
765 *s++ = '\0';
766 i = bfd_scan_vma (s, (const char **) NULL, 0);
767 n = XNEW (struct defsym_list);
768 n->next = defsyms;
769 n->name = optarg;
770 n->value = i;
771 defsyms = n;
772 }
773 break;
774
775 #ifdef HAVE_ITBL_CPU
776 case 't':
777 {
778 /* optarg is the name of the file containing the instruction
779 formats, opcodes, register names, etc. */
780 struct itbl_file_list *n;
781
782 if (optarg == NULL)
783 {
784 as_warn (_("no file name following -t option"));
785 break;
786 }
787
788 n = XNEW (struct itbl_file_list);
789 n->next = itbl_files;
790 n->name = optarg;
791 itbl_files = n;
792
793 /* Parse the file and add the new instructions to our internal
794 table. If multiple instruction tables are specified, the
795 information from this table gets appended onto the existing
796 internal table. */
797 itbl_files->name = xstrdup (optarg);
798 if (itbl_parse (itbl_files->name) != 0)
799 as_fatal (_("failed to read instruction table %s\n"),
800 itbl_files->name);
801 }
802 break;
803 #endif
804
805 case OPTION_DEPFILE:
806 start_dependencies (optarg);
807 break;
808
809 case 'g':
810 /* Some backends, eg Alpha and Mips, use the -g switch for their
811 own purposes. So we check here for an explicit -g and allow
812 the backend to decide if it wants to process it. */
813 if ( old_argv[optind - 1][1] == 'g'
814 && md_parse_option (optc, optarg))
815 continue;
816
817 if (md_debug_format_selector)
818 debug_type = md_debug_format_selector (& use_gnu_debug_info_extensions);
819 else if (IS_ELF)
820 debug_type = DEBUG_DWARF2;
821 else
822 debug_type = DEBUG_STABS;
823 break;
824
825 case OPTION_GSTABS_PLUS:
826 use_gnu_debug_info_extensions = 1;
827 /* Fall through. */
828 case OPTION_GSTABS:
829 debug_type = DEBUG_STABS;
830 break;
831
832 case OPTION_GDWARF2:
833 debug_type = DEBUG_DWARF2;
834 break;
835
836 case OPTION_GDWARF_SECTIONS:
837 flag_dwarf_sections = TRUE;
838 break;
839
840 case OPTION_GDWARF_CIE_VERSION:
841 flag_dwarf_cie_version = atoi (optarg);
842 /* The available CIE versions are 1 (DWARF 2), 3 (DWARF 3), and 4
843 (DWARF 4 and 5). */
844 if (flag_dwarf_cie_version < 1
845 || flag_dwarf_cie_version == 2
846 || flag_dwarf_cie_version > 4)
847 as_fatal (_("Invalid --gdwarf-cie-version `%s'"), optarg);
848 break;
849
850 case 'J':
851 flag_signed_overflow_ok = 1;
852 break;
853
854 #ifndef WORKING_DOT_WORD
855 case 'K':
856 flag_warn_displacement = 1;
857 break;
858 #endif
859 case 'L':
860 flag_keep_locals = 1;
861 break;
862
863 case OPTION_LISTING_LHS_WIDTH:
864 listing_lhs_width = atoi (optarg);
865 if (listing_lhs_width_second < listing_lhs_width)
866 listing_lhs_width_second = listing_lhs_width;
867 break;
868 case OPTION_LISTING_LHS_WIDTH2:
869 {
870 int tmp = atoi (optarg);
871
872 if (tmp > listing_lhs_width)
873 listing_lhs_width_second = tmp;
874 }
875 break;
876 case OPTION_LISTING_RHS_WIDTH:
877 listing_rhs_width = atoi (optarg);
878 break;
879 case OPTION_LISTING_CONT_LINES:
880 listing_lhs_cont_lines = atoi (optarg);
881 break;
882
883 case 'M':
884 flag_mri = 1;
885 #ifdef TC_M68K
886 flag_m68k_mri = 1;
887 #endif
888 break;
889
890 case 'R':
891 flag_readonly_data_in_text = 1;
892 break;
893
894 case 'W':
895 flag_no_warnings = 1;
896 break;
897
898 case OPTION_WARN:
899 flag_no_warnings = 0;
900 flag_fatal_warnings = 0;
901 break;
902
903 case OPTION_WARN_FATAL:
904 flag_no_warnings = 0;
905 flag_fatal_warnings = 1;
906 break;
907
908 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF
909 case OPTION_EXECSTACK:
910 flag_execstack = 1;
911 flag_noexecstack = 0;
912 break;
913
914 case OPTION_NOEXECSTACK:
915 flag_noexecstack = 1;
916 flag_execstack = 0;
917 break;
918
919 case OPTION_SIZE_CHECK:
920 if (strcasecmp (optarg, "error") == 0)
921 flag_allow_nonconst_size = FALSE;
922 else if (strcasecmp (optarg, "warning") == 0)
923 flag_allow_nonconst_size = TRUE;
924 else
925 as_fatal (_("Invalid --size-check= option: `%s'"), optarg);
926 break;
927
928 case OPTION_ELF_STT_COMMON:
929 if (strcasecmp (optarg, "no") == 0)
930 flag_use_elf_stt_common = 0;
931 else if (strcasecmp (optarg, "yes") == 0)
932 flag_use_elf_stt_common = 1;
933 else
934 as_fatal (_("Invalid --elf-stt-common= option: `%s'"),
935 optarg);
936 break;
937
938 case OPTION_SECTNAME_SUBST:
939 flag_sectname_subst = 1;
940 break;
941
942 case OPTION_ELF_BUILD_NOTES:
943 if (strcasecmp (optarg, "no") == 0)
944 flag_generate_build_notes = FALSE;
945 else if (strcasecmp (optarg, "yes") == 0)
946 flag_generate_build_notes = TRUE;
947 else
948 as_fatal (_("Invalid --generate-missing-build-notes option: `%s'"),
949 optarg);
950 break;
951
952 #endif /* OBJ_ELF */
953
954 case 'Z':
955 flag_always_generate_output = 1;
956 break;
957
958 case OPTION_AL:
959 listing |= LISTING_LISTING;
960 if (optarg)
961 listing_filename = xstrdup (optarg);
962 break;
963
964 case OPTION_ALTERNATE:
965 optarg = old_argv [optind - 1];
966 while (* optarg == '-')
967 optarg ++;
968
969 if (strcmp (optarg, "alternate") == 0)
970 {
971 flag_macro_alternate = 1;
972 break;
973 }
974 optarg ++;
975 /* Fall through. */
976
977 case 'a':
978 if (optarg)
979 {
980 if (optarg != old_argv[optind] && optarg[-1] == '=')
981 --optarg;
982
983 if (md_parse_option (optc, optarg) != 0)
984 break;
985
986 while (*optarg)
987 {
988 switch (*optarg)
989 {
990 case 'c':
991 listing |= LISTING_NOCOND;
992 break;
993 case 'd':
994 listing |= LISTING_NODEBUG;
995 break;
996 case 'g':
997 listing |= LISTING_GENERAL;
998 break;
999 case 'h':
1000 listing |= LISTING_HLL;
1001 break;
1002 case 'l':
1003 listing |= LISTING_LISTING;
1004 break;
1005 case 'm':
1006 listing |= LISTING_MACEXP;
1007 break;
1008 case 'n':
1009 listing |= LISTING_NOFORM;
1010 break;
1011 case 's':
1012 listing |= LISTING_SYMBOLS;
1013 break;
1014 case '=':
1015 listing_filename = xstrdup (optarg + 1);
1016 optarg += strlen (listing_filename);
1017 break;
1018 default:
1019 as_fatal (_("invalid listing option `%c'"), *optarg);
1020 break;
1021 }
1022 optarg++;
1023 }
1024 }
1025 if (!listing)
1026 listing = LISTING_DEFAULT;
1027 break;
1028
1029 case 'D':
1030 /* DEBUG is implemented: it debugs different
1031 things from other people's assemblers. */
1032 flag_debug = 1;
1033 break;
1034
1035 case 'f':
1036 flag_no_comments = 1;
1037 break;
1038
1039 case 'I':
1040 { /* Include file directory. */
1041 char *temp = xstrdup (optarg);
1042
1043 add_include_dir (temp);
1044 break;
1045 }
1046
1047 case 'o':
1048 out_file_name = xstrdup (optarg);
1049 break;
1050
1051 case 'w':
1052 break;
1053
1054 case 'X':
1055 /* -X means treat warnings as errors. */
1056 break;
1057
1058 case OPTION_REDUCE_MEMORY_OVERHEADS:
1059 /* The only change we make at the moment is to reduce
1060 the size of the hash tables that we use. */
1061 set_gas_hash_table_size (4051);
1062 break;
1063
1064 case OPTION_HASH_TABLE_SIZE:
1065 {
1066 unsigned long new_size;
1067
1068 new_size = strtoul (optarg, NULL, 0);
1069 if (new_size)
1070 set_gas_hash_table_size (new_size);
1071 else
1072 as_fatal (_("--hash-size needs a numeric argument"));
1073 break;
1074 }
1075 }
1076 }
1077
1078 free (shortopts);
1079 free (longopts);
1080
1081 *pargc = new_argc;
1082 *pargv = new_argv;
1083
1084 #ifdef md_after_parse_args
1085 md_after_parse_args ();
1086 #endif
1087 }
1088
1089 static void
dump_statistics(void)1090 dump_statistics (void)
1091 {
1092 long run_time = get_run_time () - start_time;
1093
1094 fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"),
1095 myname, run_time / 1000000, run_time % 1000000);
1096
1097 subsegs_print_statistics (stderr);
1098 write_print_statistics (stderr);
1099 symbol_print_statistics (stderr);
1100 read_print_statistics (stderr);
1101
1102 #ifdef tc_print_statistics
1103 tc_print_statistics (stderr);
1104 #endif
1105
1106 #ifdef obj_print_statistics
1107 obj_print_statistics (stderr);
1108 #endif
1109 }
1110
1111 static void
close_output_file(void)1112 close_output_file (void)
1113 {
1114 output_file_close (out_file_name);
1115 if (!keep_it)
1116 unlink_if_ordinary (out_file_name);
1117 }
1118
1119 /* The interface between the macro code and gas expression handling. */
1120
1121 static size_t
macro_expr(const char * emsg,size_t idx,sb * in,offsetT * val)1122 macro_expr (const char *emsg, size_t idx, sb *in, offsetT *val)
1123 {
1124 expressionS ex;
1125
1126 sb_terminate (in);
1127
1128 temp_ilp (in->ptr + idx);
1129 expression_and_evaluate (&ex);
1130 idx = input_line_pointer - in->ptr;
1131 restore_ilp ();
1132
1133 if (ex.X_op != O_constant)
1134 as_bad ("%s", emsg);
1135
1136 *val = ex.X_add_number;
1137
1138 return idx;
1139 }
1140
1141 /* Here to attempt 1 pass over each input file.
1142 We scan argv[*] looking for filenames or exactly "" which is
1143 shorthand for stdin. Any argv that is NULL is not a file-name.
1144 We set need_pass_2 TRUE if, after this, we still have unresolved
1145 expressions of the form (unknown value)+-(unknown value).
1146
1147 Note the un*x semantics: there is only 1 logical input file, but it
1148 may be a catenation of many 'physical' input files. */
1149
1150 static void
perform_an_assembly_pass(int argc,char ** argv)1151 perform_an_assembly_pass (int argc, char ** argv)
1152 {
1153 int saw_a_file = 0;
1154 #ifndef OBJ_MACH_O
1155 flagword applicable;
1156 #endif
1157
1158 need_pass_2 = 0;
1159
1160 #ifndef OBJ_MACH_O
1161 /* Create the standard sections, and those the assembler uses
1162 internally. */
1163 text_section = subseg_new (TEXT_SECTION_NAME, 0);
1164 data_section = subseg_new (DATA_SECTION_NAME, 0);
1165 bss_section = subseg_new (BSS_SECTION_NAME, 0);
1166 /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed
1167 to have relocs, otherwise we don't find out in time. */
1168 applicable = bfd_applicable_section_flags (stdoutput);
1169 bfd_set_section_flags (text_section,
1170 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1171 | SEC_CODE | SEC_READONLY));
1172 bfd_set_section_flags (data_section,
1173 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1174 | SEC_DATA));
1175 bfd_set_section_flags (bss_section, applicable & SEC_ALLOC);
1176 seg_info (bss_section)->bss = 1;
1177 #endif
1178 subseg_new (BFD_ABS_SECTION_NAME, 0);
1179 subseg_new (BFD_UND_SECTION_NAME, 0);
1180 reg_section = subseg_new ("*GAS `reg' section*", 0);
1181 expr_section = subseg_new ("*GAS `expr' section*", 0);
1182
1183 #ifndef OBJ_MACH_O
1184 subseg_set (text_section, 0);
1185 #endif
1186
1187 /* This may add symbol table entries, which requires having an open BFD,
1188 and sections already created. */
1189 md_begin ();
1190
1191 #ifdef USING_CGEN
1192 gas_cgen_begin ();
1193 #endif
1194 #ifdef obj_begin
1195 obj_begin ();
1196 #endif
1197
1198 /* Skip argv[0]. */
1199 argv++;
1200 argc--;
1201
1202 while (argc--)
1203 {
1204 if (*argv)
1205 { /* Is it a file-name argument? */
1206 PROGRESS (1);
1207 saw_a_file++;
1208 /* argv->"" if stdin desired, else->filename. */
1209 read_a_source_file (*argv);
1210 }
1211 argv++; /* Completed that argv. */
1212 }
1213 if (!saw_a_file)
1214 read_a_source_file ("");
1215 }
1216
1217
1218 int
main(int argc,char ** argv)1219 main (int argc, char ** argv)
1220 {
1221 char ** argv_orig = argv;
1222 struct stat sob;
1223
1224 int macro_strip_at;
1225
1226 start_time = get_run_time ();
1227 signal_init ();
1228
1229 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
1230 setlocale (LC_MESSAGES, "");
1231 #endif
1232 #if defined (HAVE_SETLOCALE)
1233 setlocale (LC_CTYPE, "");
1234 #endif
1235 bindtextdomain (PACKAGE, LOCALEDIR);
1236 textdomain (PACKAGE);
1237
1238 if (debug_memory)
1239 chunksize = 64;
1240
1241 #ifdef HOST_SPECIAL_INIT
1242 HOST_SPECIAL_INIT (argc, argv);
1243 #endif
1244
1245 myname = argv[0];
1246 xmalloc_set_program_name (myname);
1247
1248 expandargv (&argc, &argv);
1249
1250 START_PROGRESS (myname, 0);
1251
1252 #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME
1253 #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out"
1254 #endif
1255
1256 out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME;
1257
1258 hex_init ();
1259 if (bfd_init () != BFD_INIT_MAGIC)
1260 as_fatal (_("libbfd ABI mismatch"));
1261 bfd_set_error_program_name (myname);
1262
1263 #ifdef USE_EMULATIONS
1264 select_emulation_mode (argc, argv);
1265 #endif
1266
1267 PROGRESS (1);
1268 /* Call parse_args before any of the init/begin functions
1269 so that switches like --hash-size can be honored. */
1270 parse_args (&argc, &argv);
1271
1272 if (argc > 1 && stat (out_file_name, &sob) == 0)
1273 {
1274 int i;
1275
1276 for (i = 1; i < argc; ++i)
1277 {
1278 struct stat sib;
1279
1280 /* Check that the input file and output file are different. */
1281 if (stat (argv[i], &sib) == 0
1282 && sib.st_ino == sob.st_ino
1283 /* POSIX emulating systems may support stat() but if the
1284 underlying file system does not support a file serial number
1285 of some kind then they will return 0 for the inode. So
1286 two files with an inode of 0 may not actually be the same.
1287 On real POSIX systems no ordinary file will ever have an
1288 inode of 0. */
1289 && sib.st_ino != 0
1290 /* Different files may have the same inode number if they
1291 reside on different devices, so check the st_dev field as
1292 well. */
1293 && sib.st_dev == sob.st_dev)
1294 {
1295 const char *saved_out_file_name = out_file_name;
1296
1297 /* Don't let as_fatal remove the output file! */
1298 out_file_name = NULL;
1299 as_fatal (_("The input '%s' and output '%s' files are the same"),
1300 argv[i], saved_out_file_name);
1301 }
1302 }
1303 }
1304
1305 symbol_begin ();
1306 frag_init ();
1307 subsegs_begin ();
1308 read_begin ();
1309 input_scrub_begin ();
1310 expr_begin ();
1311
1312 /* It has to be called after dump_statistics (). */
1313 xatexit (close_output_file);
1314
1315 if (flag_print_statistics)
1316 xatexit (dump_statistics);
1317
1318 macro_strip_at = 0;
1319 #ifdef TC_I960
1320 macro_strip_at = flag_mri;
1321 #endif
1322
1323 macro_init (flag_macro_alternate, flag_mri, macro_strip_at, macro_expr);
1324
1325 PROGRESS (1);
1326
1327 output_file_create (out_file_name);
1328 gas_assert (stdoutput != 0);
1329
1330 dot_symbol_init ();
1331
1332 #ifdef tc_init_after_args
1333 tc_init_after_args ();
1334 #endif
1335
1336 itbl_init ();
1337
1338 dwarf2_init ();
1339
1340 local_symbol_make (".gasversion.", absolute_section,
1341 BFD_VERSION / 10000UL, &predefined_address_frag);
1342
1343 /* Now that we have fully initialized, and have created the output
1344 file, define any symbols requested by --defsym command line
1345 arguments. */
1346 while (defsyms != NULL)
1347 {
1348 symbolS *sym;
1349 struct defsym_list *next;
1350
1351 sym = symbol_new (defsyms->name, absolute_section, defsyms->value,
1352 &zero_address_frag);
1353 /* Make symbols defined on the command line volatile, so that they
1354 can be redefined inside a source file. This makes this assembler's
1355 behaviour compatible with earlier versions, but it may not be
1356 completely intuitive. */
1357 S_SET_VOLATILE (sym);
1358 symbol_table_insert (sym);
1359 next = defsyms->next;
1360 free (defsyms);
1361 defsyms = next;
1362 }
1363
1364 PROGRESS (1);
1365
1366 /* Assemble it. */
1367 perform_an_assembly_pass (argc, argv);
1368
1369 cond_finish_check (-1);
1370
1371 #ifdef md_end
1372 md_end ();
1373 #endif
1374
1375 #if defined OBJ_ELF || defined OBJ_MAYBE_ELF
1376 if ((flag_execstack || flag_noexecstack)
1377 && OUTPUT_FLAVOR == bfd_target_elf_flavour)
1378 {
1379 segT gnustack;
1380
1381 gnustack = subseg_new (".note.GNU-stack", 0);
1382 bfd_set_section_flags (gnustack,
1383 SEC_READONLY | (flag_execstack ? SEC_CODE : 0));
1384
1385 }
1386 #endif
1387
1388 /* If we've been collecting dwarf2 .debug_line info, either for
1389 assembly debugging or on behalf of the compiler, emit it now. */
1390 dwarf2_finish ();
1391
1392 /* If we constructed dwarf2 .eh_frame info, either via .cfi
1393 directives from the user or by the backend, emit it now. */
1394 cfi_finish ();
1395
1396 keep_it = 0;
1397 if (seen_at_least_1_file ())
1398 {
1399 int n_warns, n_errs;
1400 char warn_msg[50];
1401 char err_msg[50];
1402
1403 write_object_file ();
1404
1405 n_warns = had_warnings ();
1406 n_errs = had_errors ();
1407
1408 sprintf (warn_msg,
1409 ngettext ("%d warning", "%d warnings", n_warns), n_warns);
1410 sprintf (err_msg,
1411 ngettext ("%d error", "%d errors", n_errs), n_errs);
1412 if (flag_fatal_warnings && n_warns != 0)
1413 {
1414 if (n_errs == 0)
1415 as_bad (_("%s, treating warnings as errors"), warn_msg);
1416 n_errs += n_warns;
1417 }
1418
1419 if (n_errs == 0)
1420 keep_it = 1;
1421 else if (flag_always_generate_output)
1422 {
1423 /* The -Z flag indicates that an object file should be generated,
1424 regardless of warnings and errors. */
1425 keep_it = 1;
1426 fprintf (stderr, _("%s, %s, generating bad object file\n"),
1427 err_msg, warn_msg);
1428 }
1429 }
1430
1431 fflush (stderr);
1432
1433 #ifndef NO_LISTING
1434 listing_print (listing_filename, argv_orig);
1435 #endif
1436
1437 input_scrub_end ();
1438
1439 END_PROGRESS (myname);
1440
1441 /* Use xexit instead of return, because under VMS environments they
1442 may not place the same interpretation on the value given. */
1443 if (had_errors () != 0)
1444 xexit (EXIT_FAILURE);
1445
1446 /* Only generate dependency file if assembler was successful. */
1447 print_dependencies ();
1448
1449 xexit (EXIT_SUCCESS);
1450 }
1451