1 /* as.c - GAS main program.
2 Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
4 Free Software Foundation, Inc.
6 This file is part of GAS, the GNU Assembler.
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
23 /* Main program for AS; a 32-bit assembler of GNU.
24 * Understands command arguments.
25 * Has a few routines that don't fit in other modules because they
31 * Since no-one else says they will support them in future: I
32 * don't support them now.
41 #include "output-file.h"
44 #include "dwarf2dbg.h"
49 #define itbl_parse(itbl_file) 1
54 #ifdef NEED_DECLARATION_SBRK
59 static void show_usage PARAMS ((FILE *));
60 static void parse_args PARAMS ((int *, char ***));
61 static void dump_statistics PARAMS ((void));
62 static void perform_an_assembly_pass PARAMS ((int argc, char **argv));
63 static int macro_expr PARAMS ((const char *, int, sb *, int *));
65 /* True if a listing is wanted. */
68 /* Name of listing file. */
69 static char *listing_filename = NULL;
71 /* Type of debugging to generate. */
73 enum debug_info_type debug_type = DEBUG_UNSPECIFIED;
75 /* Maximum level of macro nesting. */
76 int max_macro_nest = 100;
81 segT reg_section, expr_section;
82 segT text_section, data_section, bss_section;
85 /* The default obstack chunk size. If we set this to zero, the
86 obstack code will use whatever will fit in a 4096 byte block. */
89 /* To monitor memory allocation more effectively, make this non-zero.
90 Then the chunk sizes for gas and bfd will be reduced. */
93 /* We build a list of defsyms as we read the options, and then define
94 them after we have initialized everything. */
97 struct defsym_list *next;
102 static struct defsym_list *defsyms;
104 /* Keep a record of the itbl files we read in. */
106 struct itbl_file_list {
107 struct itbl_file_list *next;
111 static struct itbl_file_list *itbl_files;
113 #ifdef USE_EMULATIONS
114 #define EMULATION_ENVIRON "AS_EMULATION"
116 extern struct emulation mipsbelf, mipslelf, mipself;
117 extern struct emulation mipsbecoff, mipslecoff, mipsecoff;
118 extern struct emulation i386coff, i386elf, i386aout;
119 extern struct emulation crisaout, criself;
121 static struct emulation *const emulations[] = { EMULATIONS };
122 static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]);
124 static void select_emulation_mode PARAMS ((int, char **));
127 select_emulation_mode (argc, argv)
134 for (i = 1; i < argc; i++)
135 if (!strncmp ("--em", argv[i], 4))
141 p = strchr (argv[i], '=');
148 as_fatal (_("missing emulation mode name"));
153 em = getenv (EMULATION_ENVIRON);
155 em = DEFAULT_EMULATION;
159 for (i = 0; i < n_emulations; i++)
160 if (!strcmp (emulations[i]->name, em))
162 if (i == n_emulations)
163 as_fatal (_("unrecognized emulation name `%s'"), em);
164 this_emulation = emulations[i];
167 this_emulation = emulations[0];
169 this_emulation->init ();
173 default_emul_bfd_name ()
182 this_format = this_emulation->format;
184 if (this_emulation->leading_underscore == 2)
185 this_emulation->leading_underscore = this_format->dfl_leading_underscore;
187 if (this_emulation->default_endian != 2)
188 target_big_endian = this_emulation->default_endian;
190 if (this_emulation->fake_label_name == 0)
192 if (this_emulation->leading_underscore)
193 this_emulation->fake_label_name = "L0\001";
195 /* What other parameters should we test? */
196 this_emulation->fake_label_name = ".L0\001";
210 fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s"),
211 VERSION, TARGET_ALIAS, BFD_VERSION);
213 fprintf (stderr, _("GNU assembler version %s (%s)"), VERSION, TARGET_ALIAS);
215 fprintf (stderr, "\n");
222 fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname);
224 fprintf (stream, _("\
226 -a[sub-option...] turn on listings\n\
227 Sub-options [default hls]:\n\
228 c omit false conditionals\n\
229 d omit debugging directives\n\
230 h include high-level source\n\
231 l include assembly\n\
232 m include macro expansions\n\
233 n omit forms processing\n\
235 L include line debug statistics (if applicable)\n\
236 =FILE list to FILE (must be last sub-option)\n"));
238 fprintf (stream, _("\
239 -D produce assembler debugging messages\n"));
240 fprintf (stream, _("\
241 --defsym SYM=VAL define symbol SYM to given value\n"));
242 #ifdef USE_EMULATIONS
249 for (i = 0; i < n_emulations - 1; i++)
250 fprintf (stream, "%s | ", emulations[i]->name);
251 fprintf (stream, "%s]\n", emulations[i]->name);
253 def_em = getenv (EMULATION_ENVIRON);
255 def_em = DEFAULT_EMULATION;
256 fprintf (stream, _("\
257 emulate output (default %s)\n"), def_em);
260 fprintf (stream, _("\
261 -f skip whitespace and comment preprocessing\n"));
262 fprintf (stream, _("\
263 --gstabs generate stabs debugging information\n"));
264 fprintf (stream, _("\
265 --gdwarf2 generate DWARF2 debugging information\n"));
266 fprintf (stream, _("\
267 --help show this message and exit\n"));
268 fprintf (stream, _("\
269 --target-help show target specific options\n"));
270 fprintf (stream, _("\
271 -I DIR add DIR to search list for .include directives\n"));
272 fprintf (stream, _("\
273 -J don't warn about signed overflow\n"));
274 fprintf (stream, _("\
275 -K warn when differences altered for long displacements\n"));
276 fprintf (stream, _("\
277 -L,--keep-locals keep local symbols (e.g. starting with `L')\n"));
278 fprintf (stream, _("\
279 -M,--mri assemble in MRI compatibility mode\n"));
280 fprintf (stream, _("\
281 --MD FILE write dependency information in FILE (default none)\n"));
282 fprintf (stream, _("\
284 fprintf (stream, _("\
285 -o OBJFILE name the object-file output OBJFILE (default a.out)\n"));
286 fprintf (stream, _("\
287 -R fold data section into text section\n"));
288 fprintf (stream, _("\
289 --statistics print various measured statistics from execution\n"));
290 fprintf (stream, _("\
291 --strip-local-absolute strip local absolute symbols\n"));
292 fprintf (stream, _("\
293 --traditional-format Use same format as native assembler when possible\n"));
294 fprintf (stream, _("\
295 --version print assembler version number and exit\n"));
296 fprintf (stream, _("\
297 -W --no-warn suppress warnings\n"));
298 fprintf (stream, _("\
299 --warn don't suppress warnings\n"));
300 fprintf (stream, _("\
301 --fatal-warnings treat warnings as errors\n"));
302 fprintf (stream, _("\
303 --itbl INSTTBL extend instruction set to include instructions\n\
304 matching the specifications defined in file INSTTBL\n"));
305 fprintf (stream, _("\
307 fprintf (stream, _("\
309 fprintf (stream, _("\
310 -Z generate object file even after errors\n"));
311 fprintf (stream, _("\
312 --listing-lhs-width set the width in words of the output data column of\n\
314 fprintf (stream, _("\
315 --listing-lhs-width2 set the width in words of the continuation lines\n\
316 of the output data column; ignored if smaller than\n\
317 the width of the first line\n"));
318 fprintf (stream, _("\
319 --listing-rhs-width set the max width in characters of the lines from\n\
320 the source file\n"));
321 fprintf (stream, _("\
322 --listing-cont-lines set the maximum number of continuation lines used\n\
323 for the output data column of the listing\n"));
325 md_show_usage (stream);
327 fputc ('\n', stream);
328 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
331 /* Since it is easy to do here we interpret the special arg "-"
332 to mean "use stdin" and we set that argv[] pointing to "".
333 After we have munged argv[], the only things left are source file
334 name(s) and ""(s) denoting stdin. These file names are used
335 (perhaps more than once) later.
337 check for new machine-dep cmdline options in
338 md_parse_option definitions in config/tc-*.c. */
341 parse_args (pargc, pargv)
345 int old_argc, new_argc;
346 char **old_argv, **new_argv;
348 /* Starting the short option string with '-' is for programs that
349 expect options and other ARGV-elements in any order and that care about
350 the ordering of the two. We describe each non-option ARGV-element
351 as if it were the argument of an option with character code 1. */
354 extern CONST char *md_shortopts;
355 static const char std_shortopts[] = {
357 #ifndef WORKING_DOT_WORD
358 /* -K is not meaningful if .word is not being hacked. */
361 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':',
363 /* -v takes an argument on VMS, so we don't make it a generic
368 /* New option for extending instruction set (see also --itbl below) */
372 struct option *longopts;
373 extern struct option md_longopts[];
374 extern size_t md_longopts_size;
375 static const struct option std_longopts[] = {
376 #define OPTION_HELP (OPTION_STD_BASE)
377 {"help", no_argument, NULL, OPTION_HELP},
378 {"keep-locals", no_argument, NULL, 'L'},
379 {"mri", no_argument, NULL, 'M'},
380 #define OPTION_NOCPP (OPTION_STD_BASE + 1)
381 {"nocpp", no_argument, NULL, OPTION_NOCPP},
382 #define OPTION_STATISTICS (OPTION_STD_BASE + 2)
383 {"statistics", no_argument, NULL, OPTION_STATISTICS},
384 #define OPTION_VERSION (OPTION_STD_BASE + 3)
385 {"version", no_argument, NULL, OPTION_VERSION},
386 #define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4)
387 {"dump-config", no_argument, NULL, OPTION_DUMPCONFIG},
388 #define OPTION_VERBOSE (OPTION_STD_BASE + 5)
389 {"verbose", no_argument, NULL, OPTION_VERBOSE},
390 #define OPTION_EMULATION (OPTION_STD_BASE + 6)
391 {"emulation", required_argument, NULL, OPTION_EMULATION},
392 #define OPTION_DEFSYM (OPTION_STD_BASE + 7)
393 {"defsym", required_argument, NULL, OPTION_DEFSYM},
394 #define OPTION_INSTTBL (OPTION_STD_BASE + 8)
395 /* New option for extending instruction set (see also -t above).
396 The "-t file" or "--itbl file" option extends the basic set of
397 valid instructions by reading "file", a text file containing a
398 list of instruction formats. The additional opcodes and their
399 formats are added to the built-in set of instructions, and
400 mnemonics for new registers may also be defined. */
401 {"itbl", required_argument, NULL, OPTION_INSTTBL},
402 #define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9)
403 {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH},
404 #define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10)
405 {"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2},
406 #define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11)
407 {"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH},
408 #define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12)
409 {"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES},
410 #define OPTION_DEPFILE (OPTION_STD_BASE + 13)
411 {"MD", required_argument, NULL, OPTION_DEPFILE},
412 #define OPTION_GSTABS (OPTION_STD_BASE + 14)
413 {"gstabs", no_argument, NULL, OPTION_GSTABS},
414 #define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15)
415 {"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE},
416 #define OPTION_TRADITIONAL_FORMAT (OPTION_STD_BASE + 16)
417 {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
418 #define OPTION_GDWARF2 (OPTION_STD_BASE + 17)
419 {"gdwarf2", no_argument, NULL, OPTION_GDWARF2},
420 {"no-warn", no_argument, NULL, 'W'},
421 #define OPTION_WARN (OPTION_STD_BASE + 18)
422 {"warn", no_argument, NULL, OPTION_WARN},
423 #define OPTION_TARGET_HELP (OPTION_STD_BASE + 19)
424 {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
425 #define OPTION_WARN_FATAL (OPTION_STD_BASE + 20)
426 {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}
427 /* When you add options here, check that they do not collide with
428 OPTION_MD_BASE. See as.h. */
431 /* Construct the option lists from the standard list and the target
432 dependent list. Include space for an extra NULL option and
433 always NULL terminate. */
434 shortopts = concat (std_shortopts, md_shortopts, (char *) NULL);
435 longopts = (struct option *) xmalloc (sizeof (std_longopts)
437 + sizeof (struct option));
438 memcpy (longopts, std_longopts, sizeof (std_longopts));
439 memcpy ((char *) longopts + sizeof (std_longopts),
440 md_longopts, md_longopts_size);
441 memset ((char *) longopts + sizeof (std_longopts) + md_longopts_size,
442 0, sizeof (struct option));
444 /* Make a local copy of the old argv. */
448 /* Initialize a new argv that contains no options. */
449 new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1));
450 new_argv[0] = old_argv[0];
452 new_argv[new_argc] = NULL;
456 /* getopt_long_only is like getopt_long, but '-' as well as '--' can
457 indicate a long option. */
459 int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts,
468 /* md_parse_option should return 1 if it recognizes optc,
470 if (md_parse_option (optc, optarg) != 0)
472 /* `-v' isn't included in the general short_opts list, so check for
473 it explicity here before deciding we've gotten a bad argument. */
477 /* Telling getopt to treat -v's value as optional can result
478 in it picking up a following filename argument here. The
479 VMS code in md_parse_option can return 0 in that case,
480 but it has no way of pushing the filename argument back. */
481 if (optarg && *optarg)
482 new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL;
496 case 1: /* File name. */
497 if (!strcmp (optarg, "-"))
499 new_argv[new_argc++] = optarg;
500 new_argv[new_argc] = NULL;
503 case OPTION_TARGET_HELP:
504 md_show_usage (stdout);
514 case OPTION_STATISTICS:
515 flag_print_statistics = 1;
518 case OPTION_STRIP_LOCAL_ABSOLUTE:
519 flag_strip_local_absolute = 1;
522 case OPTION_TRADITIONAL_FORMAT:
523 flag_traditional_format = 1;
527 /* This output is intended to follow the GNU standards document. */
528 printf (_("GNU assembler %s\n"), VERSION);
529 printf (_("Copyright 2001 Free Software Foundation, Inc.\n"));
531 This program is free software; you may redistribute it under the terms of\n\
532 the GNU General Public License. This program has absolutely no warranty.\n"));
533 printf (_("This assembler was configured for a target of `%s'.\n"),
537 case OPTION_EMULATION:
538 #ifdef USE_EMULATIONS
539 if (strcmp (optarg, this_emulation->name))
540 as_fatal (_("multiple emulation names specified"));
542 as_fatal (_("emulations not handled in this configuration"));
546 case OPTION_DUMPCONFIG:
547 fprintf (stderr, _("alias = %s\n"), TARGET_ALIAS);
548 fprintf (stderr, _("canonical = %s\n"), TARGET_CANONICAL);
549 fprintf (stderr, _("cpu-type = %s\n"), TARGET_CPU);
550 #ifdef TARGET_OBJ_FORMAT
551 fprintf (stderr, _("format = %s\n"), TARGET_OBJ_FORMAT);
554 fprintf (stderr, _("bfd-target = %s\n"), TARGET_FORMAT);
562 struct defsym_list *n;
564 for (s = optarg; *s != '\0' && *s != '='; s++)
567 as_fatal (_("bad defsym; format is --defsym name=value"));
570 i = bfd_scan_vma (s, (const char **) NULL, 0);
572 i = strtol (s, (char **) NULL, 0);
574 n = (struct defsym_list *) xmalloc (sizeof *n);
585 /* optarg is the name of the file containing the instruction
586 formats, opcodes, register names, etc. */
587 struct itbl_file_list *n;
591 as_warn (_("No file name following -t option\n"));
595 n = (struct itbl_file_list *) xmalloc (sizeof *n);
596 n->next = itbl_files;
600 /* Parse the file and add the new instructions to our internal
601 table. If multiple instruction tables are specified, the
602 information from this table gets appended onto the existing
604 itbl_files->name = xstrdup (optarg);
605 if (itbl_parse (itbl_files->name) != 0)
607 fprintf (stderr, _("Failed to read instruction table %s\n"),
615 start_dependencies (optarg);
619 debug_type = DEBUG_STABS;
623 debug_type = DEBUG_DWARF2;
627 flag_signed_overflow_ok = 1;
630 #ifndef WORKING_DOT_WORD
632 flag_warn_displacement = 1;
637 flag_keep_locals = 1;
640 case OPTION_LISTING_LHS_WIDTH:
641 listing_lhs_width = atoi (optarg);
642 if (listing_lhs_width_second < listing_lhs_width)
643 listing_lhs_width_second = listing_lhs_width;
645 case OPTION_LISTING_LHS_WIDTH2:
647 int tmp = atoi (optarg);
648 if (tmp > listing_lhs_width)
649 listing_lhs_width_second = tmp;
652 case OPTION_LISTING_RHS_WIDTH:
653 listing_rhs_width = atoi (optarg);
655 case OPTION_LISTING_CONT_LINES:
656 listing_lhs_cont_lines = atoi (optarg);
667 flag_readonly_data_in_text = 1;
671 flag_no_warnings = 1;
675 flag_no_warnings = 0;
676 flag_fatal_warnings = 0;
679 case OPTION_WARN_FATAL:
680 flag_no_warnings = 0;
681 flag_fatal_warnings = 1;
685 flag_always_generate_output = 1;
691 if (md_parse_option (optc, optarg) != 0)
699 listing |= LISTING_NOCOND;
702 listing |= LISTING_NODEBUG;
705 listing |= LISTING_HLL;
708 listing |= LISTING_LISTING;
711 listing |= LISTING_MACEXP;
714 listing |= LISTING_NOFORM;
717 listing |= LISTING_SYMBOLS;
720 listing_filename = xstrdup (optarg + 1);
721 optarg += strlen (listing_filename);
724 as_fatal (_("invalid listing option `%c'"), *optarg);
731 listing = LISTING_DEFAULT;
735 /* DEBUG is implemented: it debugs different
736 things from other people's assemblers. */
741 flag_no_comments = 1;
745 { /* Include file directory. */
746 char *temp = xstrdup (optarg);
747 add_include_dir (temp);
752 out_file_name = xstrdup (optarg);
759 /* -X means treat warnings as errors. */
771 static long start_time;
782 start_time = get_run_time ();
784 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
785 setlocale (LC_MESSAGES, "");
787 bindtextdomain (PACKAGE, LOCALEDIR);
788 textdomain (PACKAGE);
793 extern long _bfd_chunksize;
799 #ifdef HOST_SPECIAL_INIT
800 HOST_SPECIAL_INIT (argc, argv);
804 xmalloc_set_program_name (myname);
806 START_PROGRESS (myname, 0);
808 #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME
809 #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out"
812 out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME;
817 bfd_set_error_program_name (myname);
820 #ifdef USE_EMULATIONS
821 select_emulation_mode (argc, argv);
828 parse_args (&argc, &argv);
830 input_scrub_begin ();
833 if (flag_print_statistics)
834 xatexit (dump_statistics);
839 macro_strip_at = flag_mri;
842 /* For compatibility with the AMD 29K family macro assembler
848 macro_init (macro_alternate, flag_mri, macro_strip_at, macro_expr);
853 output_file_create (out_file_name);
854 assert (stdoutput != 0);
857 #ifdef tc_init_after_args
858 tc_init_after_args ();
863 /* Now that we have fully initialized, and have created the output
864 file, define any symbols requested by --defsym command line
866 while (defsyms != NULL)
869 struct defsym_list *next;
871 sym = symbol_new (defsyms->name, absolute_section, defsyms->value,
873 symbol_table_insert (sym);
874 next = defsyms->next;
882 perform_an_assembly_pass (argc, argv);
884 cond_finish_check (-1);
890 /* If we've been collecting dwarf2 .debug_line info, either for
891 assembly debugging or on behalf of the compiler, emit it now. */
894 if (seen_at_least_1_file ()
895 && (flag_always_generate_output || had_errors () == 0))
900 #if defined (BFD_ASSEMBLER) || !defined (BFD)
901 /* This used to be done at the start of write_object_file in
902 write.c, but that caused problems when doing listings when
903 keep_it was zero. This could probably be moved above md_end, but
904 I didn't want to risk the change. */
909 write_object_file ();
912 listing_print (listing_filename);
915 #ifndef OBJ_VMS /* does its own file handling */
916 #ifndef BFD_ASSEMBLER
919 output_file_close (out_file_name);
922 if (flag_fatal_warnings && had_warnings () > 0 && had_errors () == 0)
923 as_bad (_("%d warnings, treating warnings as errors"), had_warnings ());
925 if (had_errors () > 0 && ! flag_always_generate_output)
929 unlink (out_file_name);
933 END_PROGRESS (myname);
935 /* Use xexit instead of return, because under VMS environments they
936 may not place the same interpretation on the value given. */
937 if (had_errors () > 0)
938 xexit (EXIT_FAILURE);
940 /* Only generate dependency file if assembler was successful. */
941 print_dependencies ();
943 xexit (EXIT_SUCCESS);
950 char *lim = (char *) sbrk (0);
952 long run_time = get_run_time () - start_time;
954 fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"),
955 myname, run_time / 1000000, run_time % 1000000);
957 fprintf (stderr, _("%s: data size %ld\n"),
958 myname, (long) (lim - (char *) &environ));
961 subsegs_print_statistics (stderr);
962 write_print_statistics (stderr);
963 symbol_print_statistics (stderr);
964 read_print_statistics (stderr);
966 #ifdef tc_print_statistics
967 tc_print_statistics (stderr);
969 #ifdef obj_print_statistics
970 obj_print_statistics (stderr);
974 /* Here to attempt 1 pass over each input file.
975 We scan argv[*] looking for filenames or exactly "" which is
976 shorthand for stdin. Any argv that is NULL is not a file-name.
977 We set need_pass_2 TRUE if, after this, we still have unresolved
978 expressions of the form (unknown value)+-(unknown value).
980 Note the un*x semantics: there is only 1 logical input file, but it
981 may be a catenation of many 'physical' input files. */
984 perform_an_assembly_pass (argc, argv)
995 #ifndef BFD_ASSEMBLER
999 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
1000 segment_info[i].fix_root = 0;
1002 /* Create the three fixed ones. */
1007 seg = subseg_new (".wtext", 0);
1009 seg = subseg_new (".text", 0);
1011 assert (seg == SEG_E0);
1012 seg = subseg_new (".data", 0);
1013 assert (seg == SEG_E1);
1014 seg = subseg_new (".bss", 0);
1015 assert (seg == SEG_E2);
1017 create_target_segments ();
1021 #else /* not MANY_SEGMENTS */
1022 text_fix_root = NULL;
1023 data_fix_root = NULL;
1024 bss_fix_root = NULL;
1025 #endif /* not MANY_SEGMENTS */
1026 #else /* BFD_ASSEMBLER */
1027 /* Create the standard sections, and those the assembler uses
1029 text_section = subseg_new (TEXT_SECTION_NAME, 0);
1030 data_section = subseg_new (DATA_SECTION_NAME, 0);
1031 bss_section = subseg_new (BSS_SECTION_NAME, 0);
1032 /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed
1033 to have relocs, otherwise we don't find out in time. */
1034 applicable = bfd_applicable_section_flags (stdoutput);
1035 bfd_set_section_flags (stdoutput, text_section,
1036 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1037 | SEC_CODE | SEC_READONLY));
1038 bfd_set_section_flags (stdoutput, data_section,
1039 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1041 bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC);
1042 seg_info (bss_section)->bss = 1;
1043 subseg_new (BFD_ABS_SECTION_NAME, 0);
1044 subseg_new (BFD_UND_SECTION_NAME, 0);
1045 reg_section = subseg_new ("*GAS `reg' section*", 0);
1046 expr_section = subseg_new ("*GAS `expr' section*", 0);
1048 #endif /* BFD_ASSEMBLER */
1050 subseg_set (text_section, 0);
1052 /* This may add symbol table entries, which requires having an open BFD,
1053 and sections already created, in BFD_ASSEMBLER mode. */
1067 { /* Is it a file-name argument? */
1070 /* argv->"" if stdin desired, else->filename */
1071 read_a_source_file (*argv);
1073 argv++; /* completed that argv */
1076 read_a_source_file ("");
1079 /* The interface between the macro code and gas expression handling. */
1082 macro_expr (emsg, idx, in, val)
1093 hold = input_line_pointer;
1094 input_line_pointer = in->ptr + idx;
1096 idx = input_line_pointer - in->ptr;
1097 input_line_pointer = hold;
1099 if (ex.X_op != O_constant)
1100 as_bad ("%s", emsg);
1102 *val = (int) ex.X_add_number;