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"
53 #define itbl_parse(itbl_file) 1
58 #ifdef NEED_DECLARATION_SBRK
63 static void show_usage PARAMS ((FILE *));
64 static void parse_args PARAMS ((int *, char ***));
65 static void dump_statistics PARAMS ((void));
66 static void perform_an_assembly_pass PARAMS ((int argc, char **argv));
67 static int macro_expr PARAMS ((const char *, int, sb *, int *));
69 /* True if a listing is wanted. */
72 /* Name of listing file. */
73 static char *listing_filename = NULL;
75 /* Type of debugging to generate. */
77 enum debug_info_type debug_type = DEBUG_UNSPECIFIED;
79 /* Maximum level of macro nesting. */
80 int max_macro_nest = 100;
85 segT reg_section, expr_section;
86 segT text_section, data_section, bss_section;
89 /* The default obstack chunk size. If we set this to zero, the
90 obstack code will use whatever will fit in a 4096 byte block. */
93 /* To monitor memory allocation more effectively, make this non-zero.
94 Then the chunk sizes for gas and bfd will be reduced. */
97 /* We build a list of defsyms as we read the options, and then define
98 them after we have initialized everything. */
101 struct defsym_list *next;
106 static struct defsym_list *defsyms;
108 /* Keep a record of the itbl files we read in. */
110 struct itbl_file_list {
111 struct itbl_file_list *next;
115 static struct itbl_file_list *itbl_files;
117 #ifdef USE_EMULATIONS
118 #define EMULATION_ENVIRON "AS_EMULATION"
120 extern struct emulation mipsbelf, mipslelf, mipself;
121 extern struct emulation mipsbecoff, mipslecoff, mipsecoff;
122 extern struct emulation i386coff, i386elf, i386aout;
123 extern struct emulation crisaout, criself;
125 static struct emulation *const emulations[] = { EMULATIONS };
126 static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]);
128 static void select_emulation_mode PARAMS ((int, char **));
131 select_emulation_mode (argc, argv)
138 for (i = 1; i < argc; i++)
139 if (!strncmp ("--em", argv[i], 4))
145 p = strchr (argv[i], '=');
152 as_fatal (_("missing emulation mode name"));
157 em = getenv (EMULATION_ENVIRON);
159 em = DEFAULT_EMULATION;
163 for (i = 0; i < n_emulations; i++)
164 if (!strcmp (emulations[i]->name, em))
166 if (i == n_emulations)
167 as_fatal (_("unrecognized emulation name `%s'"), em);
168 this_emulation = emulations[i];
171 this_emulation = emulations[0];
173 this_emulation->init ();
177 default_emul_bfd_name ()
186 this_format = this_emulation->format;
188 if (this_emulation->leading_underscore == 2)
189 this_emulation->leading_underscore = this_format->dfl_leading_underscore;
191 if (this_emulation->default_endian != 2)
192 target_big_endian = this_emulation->default_endian;
194 if (this_emulation->fake_label_name == 0)
196 if (this_emulation->leading_underscore)
197 this_emulation->fake_label_name = "L0\001";
199 /* What other parameters should we test? */
200 this_emulation->fake_label_name = ".L0\001";
214 fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s"),
215 VERSION, TARGET_ALIAS, BFD_VERSION_STRING);
217 fprintf (stderr, _("GNU assembler version %s (%s)"), VERSION, TARGET_ALIAS);
219 fprintf (stderr, "\n");
226 fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname);
228 fprintf (stream, _("\
230 -a[sub-option...] turn on listings\n\
231 Sub-options [default hls]:\n\
232 c omit false conditionals\n\
233 d omit debugging directives\n\
234 h include high-level source\n\
235 l include assembly\n\
236 m include macro expansions\n\
237 n omit forms processing\n\
239 =FILE list to FILE (must be last sub-option)\n"));
241 fprintf (stream, _("\
242 -D produce assembler debugging messages\n"));
243 fprintf (stream, _("\
244 --defsym SYM=VAL define symbol SYM to given value\n"));
245 #ifdef USE_EMULATIONS
252 for (i = 0; i < n_emulations - 1; i++)
253 fprintf (stream, "%s | ", emulations[i]->name);
254 fprintf (stream, "%s]\n", emulations[i]->name);
256 def_em = getenv (EMULATION_ENVIRON);
258 def_em = DEFAULT_EMULATION;
259 fprintf (stream, _("\
260 emulate output (default %s)\n"), def_em);
263 fprintf (stream, _("\
264 -f skip whitespace and comment preprocessing\n"));
265 fprintf (stream, _("\
266 --gstabs generate stabs debugging information\n"));
267 fprintf (stream, _("\
268 --gdwarf2 generate DWARF2 debugging information\n"));
269 fprintf (stream, _("\
270 --help show this message and exit\n"));
271 fprintf (stream, _("\
272 --target-help show target specific options\n"));
273 fprintf (stream, _("\
274 -I DIR add DIR to search list for .include directives\n"));
275 fprintf (stream, _("\
276 -J don't warn about signed overflow\n"));
277 fprintf (stream, _("\
278 -K warn when differences altered for long displacements\n"));
279 fprintf (stream, _("\
280 -L,--keep-locals keep local symbols (e.g. starting with `L')\n"));
281 fprintf (stream, _("\
282 -M,--mri assemble in MRI compatibility mode\n"));
283 fprintf (stream, _("\
284 --MD FILE write dependency information in FILE (default none)\n"));
285 fprintf (stream, _("\
287 fprintf (stream, _("\
288 -o OBJFILE name the object-file output OBJFILE (default a.out)\n"));
289 fprintf (stream, _("\
290 -R fold data section into text section\n"));
291 fprintf (stream, _("\
292 --statistics print various measured statistics from execution\n"));
293 fprintf (stream, _("\
294 --strip-local-absolute strip local absolute symbols\n"));
295 fprintf (stream, _("\
296 --traditional-format Use same format as native assembler when possible\n"));
297 fprintf (stream, _("\
298 --version print assembler version number and exit\n"));
299 fprintf (stream, _("\
300 -W --no-warn suppress warnings\n"));
301 fprintf (stream, _("\
302 --warn don't suppress warnings\n"));
303 fprintf (stream, _("\
304 --fatal-warnings treat warnings as errors\n"));
305 fprintf (stream, _("\
306 --itbl INSTTBL extend instruction set to include instructions\n\
307 matching the specifications defined in file INSTTBL\n"));
308 fprintf (stream, _("\
310 fprintf (stream, _("\
312 fprintf (stream, _("\
313 -Z generate object file even after errors\n"));
314 fprintf (stream, _("\
315 --listing-lhs-width set the width in words of the output data column of\n\
317 fprintf (stream, _("\
318 --listing-lhs-width2 set the width in words of the continuation lines\n\
319 of the output data column; ignored if smaller than\n\
320 the width of the first line\n"));
321 fprintf (stream, _("\
322 --listing-rhs-width set the max width in characters of the lines from\n\
323 the source file\n"));
324 fprintf (stream, _("\
325 --listing-cont-lines set the maximum number of continuation lines used\n\
326 for the output data column of the listing\n"));
328 md_show_usage (stream);
330 fputc ('\n', stream);
331 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
334 /* Since it is easy to do here we interpret the special arg "-"
335 to mean "use stdin" and we set that argv[] pointing to "".
336 After we have munged argv[], the only things left are source file
337 name(s) and ""(s) denoting stdin. These file names are used
338 (perhaps more than once) later.
340 check for new machine-dep cmdline options in
341 md_parse_option definitions in config/tc-*.c. */
344 parse_args (pargc, pargv)
348 int old_argc, new_argc;
349 char **old_argv, **new_argv;
351 /* Starting the short option string with '-' is for programs that
352 expect options and other ARGV-elements in any order and that care about
353 the ordering of the two. We describe each non-option ARGV-element
354 as if it were the argument of an option with character code 1. */
357 extern const char *md_shortopts;
358 static const char std_shortopts[] = {
360 #ifndef WORKING_DOT_WORD
361 /* -K is not meaningful if .word is not being hacked. */
364 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':',
366 /* -v takes an argument on VMS, so we don't make it a generic
371 /* New option for extending instruction set (see also --itbl below) */
375 struct option *longopts;
376 extern struct option md_longopts[];
377 extern size_t md_longopts_size;
378 static const struct option std_longopts[] = {
379 #define OPTION_HELP (OPTION_STD_BASE)
380 {"help", no_argument, NULL, OPTION_HELP},
381 /* getopt allows abbreviations, so we do this to stop it from
382 treating -k as an abbreviation for --keep-locals. Some
383 ports use -k to enable PIC assembly. */
384 {"keep-locals", no_argument, NULL, 'L'},
385 {"keep-locals", no_argument, NULL, 'L'},
386 {"mri", no_argument, NULL, 'M'},
387 #define OPTION_NOCPP (OPTION_STD_BASE + 1)
388 {"nocpp", no_argument, NULL, OPTION_NOCPP},
389 #define OPTION_STATISTICS (OPTION_STD_BASE + 2)
390 {"statistics", no_argument, NULL, OPTION_STATISTICS},
391 #define OPTION_VERSION (OPTION_STD_BASE + 3)
392 {"version", no_argument, NULL, OPTION_VERSION},
393 #define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4)
394 {"dump-config", no_argument, NULL, OPTION_DUMPCONFIG},
395 #define OPTION_VERBOSE (OPTION_STD_BASE + 5)
396 {"verbose", no_argument, NULL, OPTION_VERBOSE},
397 #define OPTION_EMULATION (OPTION_STD_BASE + 6)
398 {"emulation", required_argument, NULL, OPTION_EMULATION},
399 #define OPTION_DEFSYM (OPTION_STD_BASE + 7)
400 {"defsym", required_argument, NULL, OPTION_DEFSYM},
401 #define OPTION_INSTTBL (OPTION_STD_BASE + 8)
402 /* New option for extending instruction set (see also -t above).
403 The "-t file" or "--itbl file" option extends the basic set of
404 valid instructions by reading "file", a text file containing a
405 list of instruction formats. The additional opcodes and their
406 formats are added to the built-in set of instructions, and
407 mnemonics for new registers may also be defined. */
408 {"itbl", required_argument, NULL, OPTION_INSTTBL},
409 #define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9)
410 {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH},
411 #define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10)
412 {"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2},
413 #define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11)
414 {"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH},
415 #define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12)
416 {"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES},
417 #define OPTION_DEPFILE (OPTION_STD_BASE + 13)
418 {"MD", required_argument, NULL, OPTION_DEPFILE},
419 #define OPTION_GSTABS (OPTION_STD_BASE + 14)
420 {"gstabs", no_argument, NULL, OPTION_GSTABS},
421 #define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15)
422 {"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE},
423 #define OPTION_TRADITIONAL_FORMAT (OPTION_STD_BASE + 16)
424 {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
425 #define OPTION_GDWARF2 (OPTION_STD_BASE + 17)
426 {"gdwarf2", no_argument, NULL, OPTION_GDWARF2},
427 {"no-warn", no_argument, NULL, 'W'},
428 #define OPTION_WARN (OPTION_STD_BASE + 18)
429 {"warn", no_argument, NULL, OPTION_WARN},
430 #define OPTION_TARGET_HELP (OPTION_STD_BASE + 19)
431 {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
432 #define OPTION_WARN_FATAL (OPTION_STD_BASE + 20)
433 {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}
434 /* When you add options here, check that they do not collide with
435 OPTION_MD_BASE. See as.h. */
438 /* Construct the option lists from the standard list and the target
439 dependent list. Include space for an extra NULL option and
440 always NULL terminate. */
441 shortopts = concat (std_shortopts, md_shortopts, (char *) NULL);
442 longopts = (struct option *) xmalloc (sizeof (std_longopts)
444 + sizeof (struct option));
445 memcpy (longopts, std_longopts, sizeof (std_longopts));
446 memcpy ((char *) longopts + sizeof (std_longopts),
447 md_longopts, md_longopts_size);
448 memset ((char *) longopts + sizeof (std_longopts) + md_longopts_size,
449 0, sizeof (struct option));
451 /* Make a local copy of the old argv. */
455 /* Initialize a new argv that contains no options. */
456 new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1));
457 new_argv[0] = old_argv[0];
459 new_argv[new_argc] = NULL;
463 /* getopt_long_only is like getopt_long, but '-' as well as '--' can
464 indicate a long option. */
466 int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts,
475 /* md_parse_option should return 1 if it recognizes optc,
477 if (md_parse_option (optc, optarg) != 0)
479 /* `-v' isn't included in the general short_opts list, so check for
480 it explicity here before deciding we've gotten a bad argument. */
484 /* Telling getopt to treat -v's value as optional can result
485 in it picking up a following filename argument here. The
486 VMS code in md_parse_option can return 0 in that case,
487 but it has no way of pushing the filename argument back. */
488 if (optarg && *optarg)
489 new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL;
503 case 1: /* File name. */
504 if (!strcmp (optarg, "-"))
506 new_argv[new_argc++] = optarg;
507 new_argv[new_argc] = NULL;
510 case OPTION_TARGET_HELP:
511 md_show_usage (stdout);
521 case OPTION_STATISTICS:
522 flag_print_statistics = 1;
525 case OPTION_STRIP_LOCAL_ABSOLUTE:
526 flag_strip_local_absolute = 1;
529 case OPTION_TRADITIONAL_FORMAT:
530 flag_traditional_format = 1;
534 /* This output is intended to follow the GNU standards document. */
536 printf (_("GNU assembler %s\n"), BFD_VERSION_STRING);
538 printf (_("GNU assembler %s\n"), VERSION);
540 printf (_("Copyright 2002 Free Software Foundation, Inc.\n"));
542 This program is free software; you may redistribute it under the terms of\n\
543 the GNU General Public License. This program has absolutely no warranty.\n"));
544 printf (_("This assembler was configured for a target of `%s'.\n"),
548 case OPTION_EMULATION:
549 #ifdef USE_EMULATIONS
550 if (strcmp (optarg, this_emulation->name))
551 as_fatal (_("multiple emulation names specified"));
553 as_fatal (_("emulations not handled in this configuration"));
557 case OPTION_DUMPCONFIG:
558 fprintf (stderr, _("alias = %s\n"), TARGET_ALIAS);
559 fprintf (stderr, _("canonical = %s\n"), TARGET_CANONICAL);
560 fprintf (stderr, _("cpu-type = %s\n"), TARGET_CPU);
561 #ifdef TARGET_OBJ_FORMAT
562 fprintf (stderr, _("format = %s\n"), TARGET_OBJ_FORMAT);
565 fprintf (stderr, _("bfd-target = %s\n"), TARGET_FORMAT);
573 struct defsym_list *n;
575 for (s = optarg; *s != '\0' && *s != '='; s++)
578 as_fatal (_("bad defsym; format is --defsym name=value"));
581 i = bfd_scan_vma (s, (const char **) NULL, 0);
583 i = strtol (s, (char **) NULL, 0);
585 n = (struct defsym_list *) xmalloc (sizeof *n);
596 /* optarg is the name of the file containing the instruction
597 formats, opcodes, register names, etc. */
598 struct itbl_file_list *n;
602 as_warn (_("no file name following -t option"));
606 n = (struct itbl_file_list *) xmalloc (sizeof *n);
607 n->next = itbl_files;
611 /* Parse the file and add the new instructions to our internal
612 table. If multiple instruction tables are specified, the
613 information from this table gets appended onto the existing
615 itbl_files->name = xstrdup (optarg);
616 if (itbl_parse (itbl_files->name) != 0)
617 as_fatal (_("failed to read instruction table %s\n"),
623 start_dependencies (optarg);
627 debug_type = DEBUG_STABS;
631 debug_type = DEBUG_DWARF2;
635 flag_signed_overflow_ok = 1;
638 #ifndef WORKING_DOT_WORD
640 flag_warn_displacement = 1;
645 flag_keep_locals = 1;
648 case OPTION_LISTING_LHS_WIDTH:
649 listing_lhs_width = atoi (optarg);
650 if (listing_lhs_width_second < listing_lhs_width)
651 listing_lhs_width_second = listing_lhs_width;
653 case OPTION_LISTING_LHS_WIDTH2:
655 int tmp = atoi (optarg);
656 if (tmp > listing_lhs_width)
657 listing_lhs_width_second = tmp;
660 case OPTION_LISTING_RHS_WIDTH:
661 listing_rhs_width = atoi (optarg);
663 case OPTION_LISTING_CONT_LINES:
664 listing_lhs_cont_lines = atoi (optarg);
675 flag_readonly_data_in_text = 1;
679 flag_no_warnings = 1;
683 flag_no_warnings = 0;
684 flag_fatal_warnings = 0;
687 case OPTION_WARN_FATAL:
688 flag_no_warnings = 0;
689 flag_fatal_warnings = 1;
693 flag_always_generate_output = 1;
699 if (md_parse_option (optc, optarg) != 0)
707 listing |= LISTING_NOCOND;
710 listing |= LISTING_NODEBUG;
713 listing |= LISTING_HLL;
716 listing |= LISTING_LISTING;
719 listing |= LISTING_MACEXP;
722 listing |= LISTING_NOFORM;
725 listing |= LISTING_SYMBOLS;
728 listing_filename = xstrdup (optarg + 1);
729 optarg += strlen (listing_filename);
732 as_fatal (_("invalid listing option `%c'"), *optarg);
739 listing = LISTING_DEFAULT;
743 /* DEBUG is implemented: it debugs different
744 things from other people's assemblers. */
749 flag_no_comments = 1;
753 { /* Include file directory. */
754 char *temp = xstrdup (optarg);
755 add_include_dir (temp);
760 out_file_name = xstrdup (optarg);
767 /* -X means treat warnings as errors. */
778 #ifdef md_after_parse_args
779 md_after_parse_args ();
783 static long start_time;
785 int main PARAMS ((int, char **));
796 start_time = get_run_time ();
798 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
799 setlocale (LC_MESSAGES, "");
801 #if defined (HAVE_SETLOCALE)
802 setlocale (LC_CTYPE, "");
804 bindtextdomain (PACKAGE, LOCALEDIR);
805 textdomain (PACKAGE);
810 #ifdef HOST_SPECIAL_INIT
811 HOST_SPECIAL_INIT (argc, argv);
815 xmalloc_set_program_name (myname);
817 START_PROGRESS (myname, 0);
819 #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME
820 #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out"
823 out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME;
828 bfd_set_error_program_name (myname);
831 #ifdef USE_EMULATIONS
832 select_emulation_mode (argc, argv);
839 parse_args (&argc, &argv);
841 input_scrub_begin ();
844 if (flag_print_statistics)
845 xatexit (dump_statistics);
850 macro_strip_at = flag_mri;
853 /* For compatibility with the AMD 29K family macro assembler
859 macro_init (macro_alternate, flag_mri, macro_strip_at, macro_expr);
864 output_file_create (out_file_name);
865 assert (stdoutput != 0);
868 #ifdef tc_init_after_args
869 tc_init_after_args ();
874 /* Now that we have fully initialized, and have created the output
875 file, define any symbols requested by --defsym command line
877 while (defsyms != NULL)
880 struct defsym_list *next;
882 sym = symbol_new (defsyms->name, absolute_section, defsyms->value,
884 symbol_table_insert (sym);
885 next = defsyms->next;
893 perform_an_assembly_pass (argc, argv);
895 cond_finish_check (-1);
901 /* If we've been collecting dwarf2 .debug_line info, either for
902 assembly debugging or on behalf of the compiler, emit it now. */
905 if (seen_at_least_1_file ()
906 && (flag_always_generate_output || had_errors () == 0))
911 #if defined (BFD_ASSEMBLER) || !defined (BFD)
912 /* This used to be done at the start of write_object_file in
913 write.c, but that caused problems when doing listings when
914 keep_it was zero. This could probably be moved above md_end, but
915 I didn't want to risk the change. */
920 write_object_file ();
923 listing_print (listing_filename);
926 #ifndef OBJ_VMS /* does its own file handling */
927 #ifndef BFD_ASSEMBLER
930 output_file_close (out_file_name);
933 if (flag_fatal_warnings && had_warnings () > 0 && had_errors () == 0)
934 as_bad (_("%d warnings, treating warnings as errors"), had_warnings ());
936 if (had_errors () > 0 && ! flag_always_generate_output)
940 unlink (out_file_name);
944 END_PROGRESS (myname);
946 /* Use xexit instead of return, because under VMS environments they
947 may not place the same interpretation on the value given. */
948 if (had_errors () > 0)
949 xexit (EXIT_FAILURE);
951 /* Only generate dependency file if assembler was successful. */
952 print_dependencies ();
954 xexit (EXIT_SUCCESS);
961 char *lim = (char *) sbrk (0);
963 long run_time = get_run_time () - start_time;
965 fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"),
966 myname, run_time / 1000000, run_time % 1000000);
968 fprintf (stderr, _("%s: data size %ld\n"),
969 myname, (long) (lim - (char *) &environ));
972 subsegs_print_statistics (stderr);
973 write_print_statistics (stderr);
974 symbol_print_statistics (stderr);
975 read_print_statistics (stderr);
977 #ifdef tc_print_statistics
978 tc_print_statistics (stderr);
980 #ifdef obj_print_statistics
981 obj_print_statistics (stderr);
985 /* Here to attempt 1 pass over each input file.
986 We scan argv[*] looking for filenames or exactly "" which is
987 shorthand for stdin. Any argv that is NULL is not a file-name.
988 We set need_pass_2 TRUE if, after this, we still have unresolved
989 expressions of the form (unknown value)+-(unknown value).
991 Note the un*x semantics: there is only 1 logical input file, but it
992 may be a catenation of many 'physical' input files. */
995 perform_an_assembly_pass (argc, argv)
1000 #ifdef BFD_ASSEMBLER
1001 flagword applicable;
1006 #ifndef BFD_ASSEMBLER
1007 #ifdef MANY_SEGMENTS
1010 for (i = SEG_E0; i < SEG_UNKNOWN; i++)
1011 segment_info[i].fix_root = 0;
1013 /* Create the three fixed ones. */
1018 seg = subseg_new (".wtext", 0);
1020 seg = subseg_new (".text", 0);
1022 assert (seg == SEG_E0);
1023 seg = subseg_new (".data", 0);
1024 assert (seg == SEG_E1);
1025 seg = subseg_new (".bss", 0);
1026 assert (seg == SEG_E2);
1028 create_target_segments ();
1032 #else /* not MANY_SEGMENTS */
1033 text_fix_root = NULL;
1034 data_fix_root = NULL;
1035 bss_fix_root = NULL;
1036 #endif /* not MANY_SEGMENTS */
1037 #else /* BFD_ASSEMBLER */
1038 /* Create the standard sections, and those the assembler uses
1040 text_section = subseg_new (TEXT_SECTION_NAME, 0);
1041 data_section = subseg_new (DATA_SECTION_NAME, 0);
1042 bss_section = subseg_new (BSS_SECTION_NAME, 0);
1043 /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed
1044 to have relocs, otherwise we don't find out in time. */
1045 applicable = bfd_applicable_section_flags (stdoutput);
1046 bfd_set_section_flags (stdoutput, text_section,
1047 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1048 | SEC_CODE | SEC_READONLY));
1049 bfd_set_section_flags (stdoutput, data_section,
1050 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1052 bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC);
1053 seg_info (bss_section)->bss = 1;
1054 subseg_new (BFD_ABS_SECTION_NAME, 0);
1055 subseg_new (BFD_UND_SECTION_NAME, 0);
1056 reg_section = subseg_new ("*GAS `reg' section*", 0);
1057 expr_section = subseg_new ("*GAS `expr' section*", 0);
1059 #endif /* BFD_ASSEMBLER */
1061 subseg_set (text_section, 0);
1063 /* This may add symbol table entries, which requires having an open BFD,
1064 and sections already created, in BFD_ASSEMBLER mode. */
1078 { /* Is it a file-name argument? */
1081 /* argv->"" if stdin desired, else->filename */
1082 read_a_source_file (*argv);
1084 argv++; /* completed that argv */
1087 read_a_source_file ("");
1090 /* The interface between the macro code and gas expression handling. */
1093 macro_expr (emsg, idx, in, val)
1104 hold = input_line_pointer;
1105 input_line_pointer = in->ptr + idx;
1107 idx = input_line_pointer - in->ptr;
1108 input_line_pointer = hold;
1110 if (ex.X_op != O_constant)
1111 as_bad ("%s", emsg);
1113 *val = (int) ex.X_add_number;