1 /* as.c - GAS main program.
2 Copyright (C) 1987, 1990, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000
3 Free Software Foundation, Inc.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* Main program for AS; a 32-bit assembler of GNU.
23 * Understands command arguments.
24 * Has a few routines that don't fit in other modules because they
30 * Since no-one else says they will support them in future: I
31 * don't support them now.
40 #include "output-file.h"
47 #define itbl_parse(itbl_file) 1
52 #ifdef NEED_DECLARATION_SBRK
57 static void show_usage PARAMS ((FILE *));
58 static void parse_args PARAMS ((int *, char ***));
59 static void dump_statistics PARAMS ((void));
60 static void perform_an_assembly_pass PARAMS ((int argc, char **argv));
61 static int macro_expr PARAMS ((const char *, int, sb *, int *));
63 /* True if a listing is wanted. */
66 /* Name of listing file. */
67 static char *listing_filename = NULL;
69 /* Type of debugging to generate. */
71 enum debug_info_type debug_type = DEBUG_NONE;
73 /* Maximum level of macro nesting. */
74 int max_macro_nest = 100;
79 segT reg_section, expr_section;
80 segT text_section, data_section, bss_section;
83 /* The default obstack chunk size. If we set this to zero, the
84 obstack code will use whatever will fit in a 4096 byte block. */
87 /* To monitor memory allocation more effectively, make this non-zero.
88 Then the chunk sizes for gas and bfd will be reduced. */
91 /* We build a list of defsyms as we read the options, and then define
92 them after we have initialized everything. */
95 struct defsym_list *next;
100 static struct defsym_list *defsyms;
102 /* Keep a record of the itbl files we read in. */
104 struct itbl_file_list {
105 struct itbl_file_list *next;
109 static struct itbl_file_list *itbl_files;
111 #ifdef USE_EMULATIONS
112 #define EMULATION_ENVIRON "AS_EMULATION"
114 extern struct emulation mipsbelf, mipslelf, mipself;
115 extern struct emulation mipsbecoff, mipslecoff, mipsecoff;
116 extern struct emulation i386coff, i386elf, i386aout;
117 extern struct emulation crisaout, criself;
119 static struct emulation *const emulations[] = { EMULATIONS };
120 static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]);
122 static void select_emulation_mode PARAMS ((int, char **));
125 select_emulation_mode (argc, argv)
132 for (i = 1; i < argc; i++)
133 if (!strncmp ("--em", argv[i], 4))
139 p = strchr (argv[i], '=');
146 as_fatal (_("missing emulation mode name"));
151 em = getenv (EMULATION_ENVIRON);
153 em = DEFAULT_EMULATION;
157 for (i = 0; i < n_emulations; i++)
158 if (!strcmp (emulations[i]->name, em))
160 if (i == n_emulations)
161 as_fatal (_("unrecognized emulation name `%s'"), em);
162 this_emulation = emulations[i];
165 this_emulation = emulations[0];
167 this_emulation->init ();
171 default_emul_bfd_name ()
180 this_format = this_emulation->format;
182 if (this_emulation->leading_underscore == 2)
183 this_emulation->leading_underscore = this_format->dfl_leading_underscore;
185 if (this_emulation->default_endian != 2)
186 target_big_endian = this_emulation->default_endian;
188 if (this_emulation->fake_label_name == 0)
190 if (this_emulation->leading_underscore)
191 this_emulation->fake_label_name = "L0\001";
193 /* What other parameters should we test? */
194 this_emulation->fake_label_name = ".L0\001";
208 fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s"),
209 VERSION, TARGET_ALIAS, BFD_VERSION);
211 fprintf (stderr, _("GNU assembler version %s (%s)"), VERSION, TARGET_ALIAS);
213 fprintf (stderr, "\n");
220 fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname);
222 fprintf (stream, _("\
224 -a[sub-option...] turn on listings\n\
225 Sub-options [default hls]:\n\
226 c omit false conditionals\n\
227 d omit debugging directives\n\
228 h include high-level source\n\
229 l include assembly\n\
230 m include macro expansions\n\
231 n omit forms processing\n\
233 L include line debug statistics (if applicable)\n\
234 =FILE list to FILE (must be last sub-option)\n"));
236 fprintf (stream, _("\
237 -D produce assembler debugging messages\n"));
238 fprintf (stream, _("\
239 --defsym SYM=VAL define symbol SYM to given value\n"));
240 #ifdef USE_EMULATIONS
247 for (i = 0; i < n_emulations - 1; i++)
248 fprintf (stream, "%s | ", emulations[i]->name);
249 fprintf (stream, "%s]\n", emulations[i]->name);
251 def_em = getenv (EMULATION_ENVIRON);
253 def_em = DEFAULT_EMULATION;
254 fprintf (stream, _("\
255 emulate output (default %s)\n"), def_em);
258 fprintf (stream, _("\
259 -f skip whitespace and comment preprocessing\n"));
260 fprintf (stream, _("\
261 --gstabs generate stabs debugging information\n"));
262 fprintf (stream, _("\
263 --gdwarf2 generate DWARF2 debugging information\n"));
264 fprintf (stream, _("\
265 --help show this message and exit\n"));
266 fprintf (stream, _("\
267 -I DIR add DIR to search list for .include directives\n"));
268 fprintf (stream, _("\
269 -J don't warn about signed overflow\n"));
270 fprintf (stream, _("\
271 -K warn when differences altered for long displacements\n"));
272 fprintf (stream, _("\
273 -L,--keep-locals keep local symbols (e.g. starting with `L')\n"));
274 fprintf (stream, _("\
275 -M,--mri assemble in MRI compatibility mode\n"));
276 fprintf (stream, _("\
277 --MD FILE write dependency information in FILE (default none)\n"));
278 fprintf (stream, _("\
280 fprintf (stream, _("\
281 -o OBJFILE name the object-file output OBJFILE (default a.out)\n"));
282 fprintf (stream, _("\
283 -R fold data section into text section\n"));
284 fprintf (stream, _("\
285 --statistics print various measured statistics from execution\n"));
286 fprintf (stream, _("\
287 --strip-local-absolute strip local absolute symbols\n"));
288 fprintf (stream, _("\
289 --traditional-format Use same format as native assembler when possible\n"));
290 fprintf (stream, _("\
291 --version print assembler version number and exit\n"));
292 fprintf (stream, _("\
293 -W --no-warn suppress warnings\n"));
294 fprintf (stream, _("\
295 --warn don't suppress warnings\n"));
296 fprintf (stream, _("\
297 --fatal-warnings treat warnings as errors\n"));
298 fprintf (stream, _("\
299 --itbl INSTTBL extend instruction set to include instructions\n\
300 matching the specifications defined in file INSTTBL\n"));
301 fprintf (stream, _("\
303 fprintf (stream, _("\
305 fprintf (stream, _("\
306 -Z generate object file even after errors\n"));
307 fprintf (stream, _("\
308 --listing-lhs-width set the width in words of the output data column of\n\
310 fprintf (stream, _("\
311 --listing-lhs-width2 set the width in words of the continuation lines\n\
312 of the output data column; ignored if smaller than\n\
313 the width of the first line\n"));
314 fprintf (stream, _("\
315 --listing-rhs-width set the max width in characters of the lines from\n\
316 the source file\n"));
317 fprintf (stream, _("\
318 --listing-cont-lines set the maximum number of continuation lines used\n\
319 for the output data column of the listing\n"));
321 md_show_usage (stream);
323 fputc ('\n', stream);
324 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
327 /* Since it is easy to do here we interpret the special arg "-"
328 to mean "use stdin" and we set that argv[] pointing to "".
329 After we have munged argv[], the only things left are source file
330 name(s) and ""(s) denoting stdin. These file names are used
331 (perhaps more than once) later.
333 check for new machine-dep cmdline options in
334 md_parse_option definitions in config/tc-*.c. */
337 parse_args (pargc, pargv)
341 int old_argc, new_argc;
342 char **old_argv, **new_argv;
344 /* Starting the short option string with '-' is for programs that
345 expect options and other ARGV-elements in any order and that care about
346 the ordering of the two. We describe each non-option ARGV-element
347 as if it were the argument of an option with character code 1. */
350 extern CONST char *md_shortopts;
351 static const char std_shortopts[] = {
353 #ifndef WORKING_DOT_WORD
354 /* -K is not meaningful if .word is not being hacked. */
357 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':',
359 /* -v takes an argument on VMS, so we don't make it a generic
364 /* New option for extending instruction set (see also --itbl below) */
368 struct option *longopts;
369 extern struct option md_longopts[];
370 extern size_t md_longopts_size;
371 static const struct option std_longopts[] = {
372 #define OPTION_HELP (OPTION_STD_BASE)
373 {"help", no_argument, NULL, OPTION_HELP},
374 {"keep-locals", no_argument, NULL, 'L'},
375 {"mri", no_argument, NULL, 'M'},
376 #define OPTION_NOCPP (OPTION_STD_BASE + 1)
377 {"nocpp", no_argument, NULL, OPTION_NOCPP},
378 #define OPTION_STATISTICS (OPTION_STD_BASE + 2)
379 {"statistics", no_argument, NULL, OPTION_STATISTICS},
380 #define OPTION_VERSION (OPTION_STD_BASE + 3)
381 {"version", no_argument, NULL, OPTION_VERSION},
382 #define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4)
383 {"dump-config", no_argument, NULL, OPTION_DUMPCONFIG},
384 #define OPTION_VERBOSE (OPTION_STD_BASE + 5)
385 {"verbose", no_argument, NULL, OPTION_VERBOSE},
386 #define OPTION_EMULATION (OPTION_STD_BASE + 6)
387 {"emulation", required_argument, NULL, OPTION_EMULATION},
388 #define OPTION_DEFSYM (OPTION_STD_BASE + 7)
389 {"defsym", required_argument, NULL, OPTION_DEFSYM},
390 #define OPTION_INSTTBL (OPTION_STD_BASE + 8)
391 /* New option for extending instruction set (see also -t above).
392 The "-t file" or "--itbl file" option extends the basic set of
393 valid instructions by reading "file", a text file containing a
394 list of instruction formats. The additional opcodes and their
395 formats are added to the built-in set of instructions, and
396 mnemonics for new registers may also be defined. */
397 {"itbl", required_argument, NULL, OPTION_INSTTBL},
398 #define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9)
399 {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH},
400 #define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10)
401 {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2},
402 #define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11)
403 {"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH},
404 #define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12)
405 {"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES},
406 #define OPTION_DEPFILE (OPTION_STD_BASE + 13)
407 {"MD", required_argument, NULL, OPTION_DEPFILE},
408 #define OPTION_GSTABS (OPTION_STD_BASE + 14)
409 {"gstabs", no_argument, NULL, OPTION_GSTABS},
410 #define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15)
411 {"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE},
412 #define OPTION_TRADITIONAL_FORMAT (OPTION_STD_BASE + 16)
413 {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
414 #define OPTION_GDWARF2 (OPTION_STD_BASE + 17)
415 {"gdwarf2", no_argument, NULL, OPTION_GDWARF2},
416 {"no-warn", no_argument, NULL, 'W'},
417 #define OPTION_WARN (OPTION_STD_BASE + 18)
418 {"warn", no_argument, NULL, OPTION_WARN},
419 #define OPTION_WARN_FATAL (OPTION_STD_BASE + 19)
420 {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}
423 /* Construct the option lists from the standard list and the target
424 dependent list. Include space for an extra NULL option and
425 always NULL terminate. */
426 shortopts = concat (std_shortopts, md_shortopts, (char *) NULL);
427 longopts = (struct option *) xmalloc (sizeof (std_longopts)
429 + sizeof (struct option));
430 memcpy (longopts, std_longopts, sizeof (std_longopts));
431 memcpy ((char *) longopts + sizeof (std_longopts),
432 md_longopts, md_longopts_size);
433 memset ((char *) longopts + sizeof (std_longopts) + md_longopts_size,
434 0, sizeof (struct option));
436 /* Make a local copy of the old argv. */
440 /* Initialize a new argv that contains no options. */
441 new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1));
442 new_argv[0] = old_argv[0];
444 new_argv[new_argc] = NULL;
448 /* getopt_long_only is like getopt_long, but '-' as well as '--' can
449 indicate a long option. */
451 int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts,
460 /* md_parse_option should return 1 if it recognizes optc,
462 if (md_parse_option (optc, optarg) != 0)
464 /* `-v' isn't included in the general short_opts list, so check for
465 it explicity here before deciding we've gotten a bad argument. */
469 /* Telling getopt to treat -v's value as optional can result
470 in it picking up a following filename argument here. The
471 VMS code in md_parse_option can return 0 in that case,
472 but it has no way of pushing the filename argument back. */
473 if (optarg && *optarg)
474 new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL;
488 case 1: /* File name. */
489 if (!strcmp (optarg, "-"))
491 new_argv[new_argc++] = optarg;
492 new_argv[new_argc] = NULL;
502 case OPTION_STATISTICS:
503 flag_print_statistics = 1;
506 case OPTION_STRIP_LOCAL_ABSOLUTE:
507 flag_strip_local_absolute = 1;
510 case OPTION_TRADITIONAL_FORMAT:
511 flag_traditional_format = 1;
515 /* This output is intended to follow the GNU standards document. */
516 printf (_("GNU assembler %s\n"), VERSION);
517 printf (_("Copyright 2000 Free Software Foundation, Inc.\n"));
519 This program is free software; you may redistribute it under the terms of\n\
520 the GNU General Public License. This program has absolutely no warranty.\n"));
521 printf (_("This assembler was configured for a target of `%s'.\n"),
525 case OPTION_EMULATION:
526 #ifdef USE_EMULATIONS
527 if (strcmp (optarg, this_emulation->name))
528 as_fatal (_("multiple emulation names specified"));
530 as_fatal (_("emulations not handled in this configuration"));
534 case OPTION_DUMPCONFIG:
535 fprintf (stderr, _("alias = %s\n"), TARGET_ALIAS);
536 fprintf (stderr, _("canonical = %s\n"), TARGET_CANONICAL);
537 fprintf (stderr, _("cpu-type = %s\n"), TARGET_CPU);
538 #ifdef TARGET_OBJ_FORMAT
539 fprintf (stderr, _("format = %s\n"), TARGET_OBJ_FORMAT);
542 fprintf (stderr, _("bfd-target = %s\n"), TARGET_FORMAT);
550 struct defsym_list *n;
552 for (s = optarg; *s != '\0' && *s != '='; s++)
555 as_fatal (_("bad defsym; format is --defsym name=value"));
558 i = bfd_scan_vma (s, (const char **) NULL, 0);
560 i = strtol (s, (char **) NULL, 0);
562 n = (struct defsym_list *) xmalloc (sizeof *n);
573 /* optarg is the name of the file containing the instruction
574 formats, opcodes, register names, etc. */
575 struct itbl_file_list *n;
579 as_warn (_("No file name following -t option\n"));
583 n = (struct itbl_file_list *) xmalloc (sizeof *n);
584 n->next = itbl_files;
588 /* Parse the file and add the new instructions to our internal
589 table. If multiple instruction tables are specified, the
590 information from this table gets appended onto the existing
592 itbl_files->name = xstrdup (optarg);
593 if (itbl_parse (itbl_files->name) != 0)
595 fprintf (stderr, _("Failed to read instruction table %s\n"),
603 start_dependencies (optarg);
607 debug_type = DEBUG_STABS;
611 debug_type = DEBUG_DWARF2;
615 flag_signed_overflow_ok = 1;
618 #ifndef WORKING_DOT_WORD
620 flag_warn_displacement = 1;
625 flag_keep_locals = 1;
628 case OPTION_LISTING_LHS_WIDTH:
629 listing_lhs_width = atoi (optarg);
630 if (listing_lhs_width_second < listing_lhs_width)
631 listing_lhs_width_second = listing_lhs_width;
633 case OPTION_LISTING_LHS_WIDTH2:
635 int tmp = atoi (optarg);
636 if (tmp > listing_lhs_width)
637 listing_lhs_width_second = tmp;
640 case OPTION_LISTING_RHS_WIDTH:
641 listing_rhs_width = atoi (optarg);
643 case OPTION_LISTING_CONT_LINES:
644 listing_lhs_cont_lines = atoi (optarg);
655 flag_readonly_data_in_text = 1;
659 flag_no_warnings = 1;
663 flag_no_warnings = 0;
664 flag_fatal_warnings = 0;
667 case OPTION_WARN_FATAL:
668 flag_no_warnings = 0;
669 flag_fatal_warnings = 1;
673 flag_always_generate_output = 1;
679 if (md_parse_option (optc, optarg) != 0)
687 listing |= LISTING_NOCOND;
690 listing |= LISTING_NODEBUG;
693 listing |= LISTING_HLL;
696 listing |= LISTING_LISTING;
699 listing |= LISTING_MACEXP;
702 listing |= LISTING_NOFORM;
705 listing |= LISTING_SYMBOLS;
708 listing_filename = xstrdup (optarg + 1);
709 optarg += strlen (listing_filename);
712 as_fatal (_("invalid listing option `%c'"), *optarg);
719 listing = LISTING_DEFAULT;
723 /* DEBUG is implemented: it debugs different
724 things from other people's assemblers. */
729 flag_no_comments = 1;
733 { /* Include file directory. */
734 char *temp = xstrdup (optarg);
735 add_include_dir (temp);
740 out_file_name = xstrdup (optarg);
747 /* -X means treat warnings as errors. */
759 static long start_time;
770 start_time = get_run_time ();
772 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
773 setlocale (LC_MESSAGES, "");
775 bindtextdomain (PACKAGE, LOCALEDIR);
776 textdomain (PACKAGE);
781 extern long _bfd_chunksize;
787 #ifdef HOST_SPECIAL_INIT
788 HOST_SPECIAL_INIT (argc, argv);
792 xmalloc_set_program_name (myname);
794 START_PROGRESS (myname, 0);
796 #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME
797 #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out"
800 out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME;
805 bfd_set_error_program_name (myname);
808 #ifdef USE_EMULATIONS
809 select_emulation_mode (argc, argv);
816 parse_args (&argc, &argv);
818 input_scrub_begin ();
821 if (flag_print_statistics)
822 xatexit (dump_statistics);
827 macro_strip_at = flag_mri;
830 /* For compatibility with the AMD 29K family macro assembler
836 macro_init (macro_alternate, flag_mri, macro_strip_at, macro_expr);
841 output_file_create (out_file_name);
842 assert (stdoutput != 0);
845 #ifdef tc_init_after_args
846 tc_init_after_args ();
851 /* Now that we have fully initialized, and have created the output
852 file, define any symbols requested by --defsym command line
854 while (defsyms != NULL)
857 struct defsym_list *next;
859 sym = symbol_new (defsyms->name, absolute_section, defsyms->value,
861 symbol_table_insert (sym);
862 next = defsyms->next;
870 perform_an_assembly_pass (argc, argv);
872 cond_finish_check (-1);
878 if (seen_at_least_1_file ()
879 && (flag_always_generate_output || had_errors () == 0))
884 #if defined (BFD_ASSEMBLER) || !defined (BFD)
885 /* This used to be done at the start of write_object_file in
886 write.c, but that caused problems when doing listings when
887 keep_it was zero. This could probably be moved above md_end, but
888 I didn't want to risk the change. */
893 write_object_file ();
896 listing_print (listing_filename);
899 #ifndef OBJ_VMS /* does its own file handling */
900 #ifndef BFD_ASSEMBLER
903 output_file_close (out_file_name);
906 if (flag_fatal_warnings && had_warnings () > 0 && had_errors () == 0)
907 as_bad (_("%d warnings, treating warnings as errors"), had_warnings ());
909 if (had_errors () > 0 && ! flag_always_generate_output)
913 unlink (out_file_name);
917 END_PROGRESS (myname);
919 /* Use xexit instead of return, because under VMS environments they
920 may not place the same interpretation on the value given. */
921 if (had_errors () > 0)
922 xexit (EXIT_FAILURE);
924 /* Only generate dependency file if assembler was successful. */
925 print_dependencies ();
927 xexit (EXIT_SUCCESS);
934 char *lim = (char *) sbrk (0);
936 long run_time = get_run_time () - start_time;
938 fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"),
939 myname, run_time / 1000000, run_time % 1000000);
941 fprintf (stderr, _("%s: data size %ld\n"),
942 myname, (long) (lim - (char *) &environ));
945 subsegs_print_statistics (stderr);
946 write_print_statistics (stderr);
947 symbol_print_statistics (stderr);
948 read_print_statistics (stderr);
950 #ifdef tc_print_statistics
951 tc_print_statistics (stderr);
953 #ifdef obj_print_statistics
954 obj_print_statistics (stderr);
958 /* Here to attempt 1 pass over each input file.
959 We scan argv[*] looking for filenames or exactly "" which is
960 shorthand for stdin. Any argv that is NULL is not a file-name.
961 We set need_pass_2 TRUE if, after this, we still have unresolved
962 expressions of the form (unknown value)+-(unknown value).
964 Note the un*x semantics: there is only 1 logical input file, but it
965 may be a catenation of many 'physical' input files. */
968 perform_an_assembly_pass (argc, argv)
979 #ifndef BFD_ASSEMBLER
983 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
984 segment_info[i].fix_root = 0;
986 /* Create the three fixed ones. */
991 seg = subseg_new (".wtext", 0);
993 seg = subseg_new (".text", 0);
995 assert (seg == SEG_E0);
996 seg = subseg_new (".data", 0);
997 assert (seg == SEG_E1);
998 seg = subseg_new (".bss", 0);
999 assert (seg == SEG_E2);
1001 create_target_segments ();
1005 #else /* not MANY_SEGMENTS */
1006 text_fix_root = NULL;
1007 data_fix_root = NULL;
1008 bss_fix_root = NULL;
1009 #endif /* not MANY_SEGMENTS */
1010 #else /* BFD_ASSEMBLER */
1011 /* Create the standard sections, and those the assembler uses
1013 text_section = subseg_new (TEXT_SECTION_NAME, 0);
1014 data_section = subseg_new (DATA_SECTION_NAME, 0);
1015 bss_section = subseg_new (BSS_SECTION_NAME, 0);
1016 /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed
1017 to have relocs, otherwise we don't find out in time. */
1018 applicable = bfd_applicable_section_flags (stdoutput);
1019 bfd_set_section_flags (stdoutput, text_section,
1020 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1021 | SEC_CODE | SEC_READONLY));
1022 bfd_set_section_flags (stdoutput, data_section,
1023 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1025 bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC);
1026 seg_info (bss_section)->bss = 1;
1027 subseg_new (BFD_ABS_SECTION_NAME, 0);
1028 subseg_new (BFD_UND_SECTION_NAME, 0);
1029 reg_section = subseg_new ("*GAS `reg' section*", 0);
1030 expr_section = subseg_new ("*GAS `expr' section*", 0);
1032 #endif /* BFD_ASSEMBLER */
1034 subseg_set (text_section, 0);
1036 /* This may add symbol table entries, which requires having an open BFD,
1037 and sections already created, in BFD_ASSEMBLER mode. */
1051 { /* Is it a file-name argument? */
1054 /* argv->"" if stdin desired, else->filename */
1055 read_a_source_file (*argv);
1057 argv++; /* completed that argv */
1060 read_a_source_file ("");
1063 /* The interface between the macro code and gas expression handling. */
1066 macro_expr (emsg, idx, in, val)
1077 hold = input_line_pointer;
1078 input_line_pointer = in->ptr + idx;
1080 idx = input_line_pointer - in->ptr;
1081 input_line_pointer = hold;
1083 if (ex.X_op != O_constant)
1084 as_bad ("%s", emsg);
1086 *val = (int) ex.X_add_number;