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
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
32 * Since no-one else says they will support them in future: I
33 * don't support them now.
43 #include "output-file.h"
50 #define itbl_parse(itbl_file) 1
55 #ifdef NEED_DECLARATION_SBRK
60 static void show_usage
PARAMS ((FILE *));
61 static void parse_args
PARAMS ((int *, char ***));
62 static void dump_statistics
PARAMS ((void));
63 static void perform_an_assembly_pass
PARAMS ((int argc
, char **argv
));
64 static int macro_expr
PARAMS ((const char *, int, sb
*, int *));
66 int listing
; /* true if a listing is wanted */
68 static char *listing_filename
= NULL
; /* Name of listing file. */
70 /* Type of debugging to generate. */
72 enum debug_info_type debug_type
= DEBUG_NONE
;
74 /* Maximum level of macro nesting. */
76 int max_macro_nest
= 100;
78 char *myname
; /* argv[0] */
80 segT reg_section
, expr_section
;
81 segT text_section
, data_section
, bss_section
;
84 /* The default obstack chunk size. If we set this to zero, the
85 obstack code will use whatever will fit in a 4096 byte block. */
88 /* To monitor memory allocation more effectively, make this non-zero.
89 Then the chunk sizes for gas and bfd will be reduced. */
92 /* We build a list of defsyms as we read the options, and then define
93 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
108 struct itbl_file_list
*next
;
112 static struct itbl_file_list
*itbl_files
;
114 #ifdef USE_EMULATIONS
115 #define EMULATION_ENVIRON "AS_EMULATION"
117 extern struct emulation mipsbelf
, mipslelf
, mipself
;
118 extern struct emulation mipsbecoff
, mipslecoff
, mipsecoff
;
119 extern struct emulation i386coff
, i386elf
, i386aout
;
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 -I DIR add DIR to search list for .include directives\n"));
270 fprintf (stream
, _("\
271 -J don't warn about signed overflow\n"));
272 fprintf (stream
, _("\
273 -K warn when differences altered for long displacements\n"));
274 fprintf (stream
, _("\
275 -L,--keep-locals keep local symbols (e.g. starting with `L')\n"));
276 fprintf (stream
, _("\
277 -M,--mri assemble in MRI compatibility mode\n"));
278 fprintf (stream
, _("\
279 --MD FILE write dependency information in FILE (default none)\n"));
280 fprintf (stream
, _("\
282 fprintf (stream
, _("\
283 -o OBJFILE name the object-file output OBJFILE (default a.out)\n"));
284 fprintf (stream
, _("\
285 -R fold data section into text section\n"));
286 fprintf (stream
, _("\
287 --statistics print various measured statistics from execution\n"));
288 fprintf (stream
, _("\
289 --strip-local-absolute strip local absolute symbols\n"));
290 fprintf (stream
, _("\
291 --traditional-format Use same format as native assembler when possible\n"));
292 fprintf (stream
, _("\
293 --version print assembler version number and exit\n"));
294 fprintf (stream
, _("\
295 -W --no-warn suppress warnings\n"));
296 fprintf (stream
, _("\
297 --warn don't suppress warnings\n"));
298 fprintf (stream
, _("\
299 --fatal-warnings treat warnings as errors\n"));
300 fprintf (stream
, _("\
301 --itbl INSTTBL extend instruction set to include instructions\n\
302 matching the specifications defined in file INSTTBL\n"));
303 fprintf (stream
, _("\
305 fprintf (stream
, _("\
307 fprintf (stream
, _("\
308 -Z generate object file even after errors\n"));
309 fprintf (stream
, _("\
310 --listing-lhs-width set the width in words of the output data column of\n\
312 fprintf (stream
, _("\
313 --listing-lhs-width2 set the width in words of the continuation lines\n\
314 of the output data column; ignored if smaller than\n\
315 the width of the first line\n"));
316 fprintf (stream
, _("\
317 --listing-rhs-width set the max width in characters of the lines from\n\
318 the source file\n"));
319 fprintf (stream
, _("\
320 --listing-cont-lines set the maximum number of continuation lines used\n\
321 for the output data column of the listing\n"));
323 md_show_usage (stream
);
325 fputc ('\n', stream
);
326 fprintf (stream
, _("Report bugs to %s\n"), REPORT_BUGS_TO
);
330 * Since it is easy to do here we interpret the special arg "-"
331 * to mean "use stdin" and we set that argv[] pointing to "".
332 * After we have munged argv[], the only things left are source file
333 * name(s) and ""(s) denoting stdin. These file names are used
334 * (perhaps more than once) later.
336 * check for new machine-dep cmdline options in
337 * 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
[] =
358 #ifndef WORKING_DOT_WORD
359 /* -K is not meaningful if .word is not being hacked. */
362 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':',
364 /* -v takes an argument on VMS, so we don't make it a generic
369 /* New option for extending instruction set (see also --itbl below) */
373 struct option
*longopts
;
374 extern struct option md_longopts
[];
375 extern size_t md_longopts_size
;
376 static const struct option std_longopts
[] = {
377 #define OPTION_HELP (OPTION_STD_BASE)
378 {"help", no_argument
, NULL
, OPTION_HELP
},
379 {"keep-locals", no_argument
, NULL
, 'L'},
380 {"mri", no_argument
, NULL
, 'M'},
381 #define OPTION_NOCPP (OPTION_STD_BASE + 1)
382 {"nocpp", no_argument
, NULL
, OPTION_NOCPP
},
383 #define OPTION_STATISTICS (OPTION_STD_BASE + 2)
384 {"statistics", no_argument
, NULL
, OPTION_STATISTICS
},
385 #define OPTION_VERSION (OPTION_STD_BASE + 3)
386 {"version", no_argument
, NULL
, OPTION_VERSION
},
387 #define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4)
388 {"dump-config", no_argument
, NULL
, OPTION_DUMPCONFIG
},
389 #define OPTION_VERBOSE (OPTION_STD_BASE + 5)
390 {"verbose", no_argument
, NULL
, OPTION_VERBOSE
},
391 #define OPTION_EMULATION (OPTION_STD_BASE + 6)
392 {"emulation", required_argument
, NULL
, OPTION_EMULATION
},
393 #define OPTION_DEFSYM (OPTION_STD_BASE + 7)
394 {"defsym", required_argument
, NULL
, OPTION_DEFSYM
},
395 #define OPTION_INSTTBL (OPTION_STD_BASE + 8)
396 /* New option for extending instruction set (see also -t above).
397 The "-t file" or "--itbl file" option extends the basic set of
398 valid instructions by reading "file", a text file containing a
399 list of instruction formats. The additional opcodes and their
400 formats are added to the built-in set of instructions, and
401 mnemonics for new registers may also be defined. */
402 {"itbl", required_argument
, NULL
, OPTION_INSTTBL
},
403 #define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9)
404 {"listing-lhs-width", required_argument
, NULL
, OPTION_LISTING_LHS_WIDTH
},
405 #define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10)
406 {"listing-lhs-width", required_argument
, NULL
, OPTION_LISTING_LHS_WIDTH2
},
407 #define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11)
408 {"listing-rhs-width", required_argument
, NULL
, OPTION_LISTING_RHS_WIDTH
},
409 #define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12)
410 {"listing-cont-lines", required_argument
, NULL
, OPTION_LISTING_CONT_LINES
},
411 #define OPTION_DEPFILE (OPTION_STD_BASE + 13)
412 {"MD", required_argument
, NULL
, OPTION_DEPFILE
},
413 #define OPTION_GSTABS (OPTION_STD_BASE + 14)
414 {"gstabs", no_argument
, NULL
, OPTION_GSTABS
},
415 #define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15)
416 {"strip-local-absolute", no_argument
, NULL
, OPTION_STRIP_LOCAL_ABSOLUTE
},
417 #define OPTION_TRADITIONAL_FORMAT (OPTION_STD_BASE + 16)
418 {"traditional-format", no_argument
, NULL
, OPTION_TRADITIONAL_FORMAT
},
419 #define OPTION_GDWARF2 (OPTION_STD_BASE + 17)
420 {"gdwarf2", no_argument
, NULL
, OPTION_GDWARF2
},
421 {"no-warn", no_argument
, NULL
, 'W'},
422 #define OPTION_WARN (OPTION_STD_BASE + 18)
423 {"warn", no_argument
, NULL
, OPTION_WARN
},
424 #define OPTION_WARN_FATAL (OPTION_STD_BASE + 19)
425 {"fatal-warnings", no_argument
, NULL
, OPTION_WARN_FATAL
}
428 /* Construct the option lists from the standard list and the
429 target dependent list. */
430 shortopts
= concat (std_shortopts
, md_shortopts
, (char *) NULL
);
431 longopts
= (struct option
*) xmalloc (sizeof (std_longopts
) + md_longopts_size
);
432 memcpy (longopts
, std_longopts
, sizeof (std_longopts
));
433 memcpy ((char *) longopts
+ sizeof (std_longopts
),
434 md_longopts
, md_longopts_size
);
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 1997 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"));
557 i
= strtol (s
, (char **) NULL
, 0);
558 n
= (struct defsym_list
*) xmalloc (sizeof *n
);
569 /* optarg is the name of the file containing the instruction
570 formats, opcodes, register names, etc. */
571 struct itbl_file_list
*n
;
575 as_warn ( _("No file name following -t option\n") );
579 n
= (struct itbl_file_list
*) xmalloc (sizeof *n
);
580 n
->next
= itbl_files
;
584 /* Parse the file and add the new instructions to our internal
585 table. If multiple instruction tables are specified, the
586 information from this table gets appended onto the existing
588 itbl_files
->name
= xstrdup (optarg
);
589 if (itbl_parse (itbl_files
->name
) != 0)
591 fprintf (stderr
, _("Failed to read instruction table %s\n"),
599 start_dependencies (optarg
);
603 debug_type
= DEBUG_STABS
;
607 debug_type
= DEBUG_DWARF2
;
611 flag_signed_overflow_ok
= 1;
614 #ifndef WORKING_DOT_WORD
616 flag_warn_displacement
= 1;
621 flag_keep_locals
= 1;
624 case OPTION_LISTING_LHS_WIDTH
:
625 listing_lhs_width
= atoi(optarg
);
626 if (listing_lhs_width_second
< listing_lhs_width
)
627 listing_lhs_width_second
= listing_lhs_width
;
629 case OPTION_LISTING_LHS_WIDTH2
:
631 int tmp
= atoi(optarg
);
632 if (tmp
> listing_lhs_width
)
633 listing_lhs_width_second
= tmp
;
636 case OPTION_LISTING_RHS_WIDTH
:
637 listing_rhs_width
= atoi(optarg
);
639 case OPTION_LISTING_CONT_LINES
:
640 listing_lhs_cont_lines
= atoi(optarg
);
651 flag_readonly_data_in_text
= 1;
655 flag_no_warnings
= 1;
659 flag_no_warnings
= 0;
660 flag_fatal_warnings
= 0;
663 case OPTION_WARN_FATAL
:
664 flag_no_warnings
= 0;
665 flag_fatal_warnings
= 1;
669 flag_always_generate_output
= 1;
680 listing
|= LISTING_NOCOND
;
683 listing
|= LISTING_NODEBUG
;
686 listing
|= LISTING_HLL
;
689 listing
|= LISTING_LISTING
;
692 listing
|= LISTING_MACEXP
;
695 listing
|= LISTING_NOFORM
;
698 listing
|= LISTING_SYMBOLS
;
701 listing_filename
= xstrdup (optarg
+ 1);
702 optarg
+= strlen (listing_filename
);
705 as_fatal (_("invalid listing option `%c'"), *optarg
);
712 listing
= LISTING_DEFAULT
;
716 /* DEBUG is implemented: it debugs different */
717 /* things from other people's assemblers. */
722 flag_no_comments
= 1;
726 { /* Include file directory */
727 char *temp
= xstrdup (optarg
);
728 add_include_dir (temp
);
733 out_file_name
= xstrdup (optarg
);
740 /* -X means treat warnings as errors */
752 static long start_time
;
763 start_time
= get_run_time ();
765 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
766 setlocale (LC_MESSAGES
, "");
768 bindtextdomain (PACKAGE
, LOCALEDIR
);
769 textdomain (PACKAGE
);
774 extern long _bfd_chunksize
;
780 #ifdef HOST_SPECIAL_INIT
781 HOST_SPECIAL_INIT (argc
, argv
);
785 xmalloc_set_program_name (myname
);
787 START_PROGRESS (myname
, 0);
789 #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME
790 #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out"
793 out_file_name
= OBJ_DEFAULT_OUTPUT_FILE_NAME
;
798 bfd_set_error_program_name (myname
);
801 #ifdef USE_EMULATIONS
802 select_emulation_mode (argc
, argv
);
809 parse_args (&argc
, &argv
);
811 input_scrub_begin ();
814 if (flag_print_statistics
)
815 xatexit (dump_statistics
);
820 macro_strip_at
= flag_mri
;
823 /* For compatibility with the AMD 29K family macro assembler
829 macro_init (macro_alternate
, flag_mri
, macro_strip_at
, macro_expr
);
834 output_file_create (out_file_name
);
835 assert (stdoutput
!= 0);
838 #ifdef tc_init_after_args
839 tc_init_after_args ();
844 /* Now that we have fully initialized, and have created the output
845 file, define any symbols requested by --defsym command line
847 while (defsyms
!= NULL
)
850 struct defsym_list
*next
;
852 sym
= symbol_new (defsyms
->name
, absolute_section
, defsyms
->value
,
854 symbol_table_insert (sym
);
855 next
= defsyms
->next
;
862 perform_an_assembly_pass (argc
, argv
); /* Assemble it. */
864 cond_finish_check (-1);
870 if (seen_at_least_1_file ()
871 && (flag_always_generate_output
|| had_errors () == 0))
876 #if defined (BFD_ASSEMBLER) || !defined (BFD)
877 /* This used to be done at the start of write_object_file in
878 write.c, but that caused problems when doing listings when
879 keep_it was zero. This could probably be moved above md_end, but
880 I didn't want to risk the change. */
885 write_object_file ();
888 listing_print (listing_filename
);
891 #ifndef OBJ_VMS /* does its own file handling */
892 #ifndef BFD_ASSEMBLER
895 output_file_close (out_file_name
);
898 if (flag_fatal_warnings
&& had_warnings() > 0 && had_errors () == 0)
899 as_bad (_("%d warnings, treating warnings as errors"), had_warnings());
901 if (had_errors () > 0 && ! flag_always_generate_output
)
905 unlink (out_file_name
);
909 END_PROGRESS (myname
);
911 /* Use xexit instead of return, because under VMS environments they
912 may not place the same interpretation on the value given. */
913 if (had_errors () > 0)
914 xexit (EXIT_FAILURE
);
916 /* Only generate dependency file if assembler was successful. */
917 print_dependencies ();
919 xexit (EXIT_SUCCESS
);
926 char *lim
= (char *) sbrk (0);
928 long run_time
= get_run_time () - start_time
;
930 fprintf (stderr
, _("%s: total time in assembly: %ld.%06ld\n"),
931 myname
, run_time
/ 1000000, run_time
% 1000000);
933 fprintf (stderr
, _("%s: data size %ld\n"),
934 myname
, (long) (lim
- (char *) &environ
));
937 subsegs_print_statistics (stderr
);
938 write_print_statistics (stderr
);
939 symbol_print_statistics (stderr
);
940 read_print_statistics (stderr
);
942 #ifdef tc_print_statistics
943 tc_print_statistics (stderr
);
945 #ifdef obj_print_statistics
946 obj_print_statistics (stderr
);
951 /* perform_an_assembly_pass()
953 * Here to attempt 1 pass over each input file.
954 * We scan argv[*] looking for filenames or exactly "" which is
955 * shorthand for stdin. Any argv that is NULL is not a file-name.
956 * We set need_pass_2 TRUE if, after this, we still have unresolved
957 * expressions of the form (unknown value)+-(unknown value).
959 * Note the un*x semantics: there is only 1 logical input file, but it
960 * may be a catenation of many 'physical' input files.
963 perform_an_assembly_pass (argc
, argv
)
974 #ifndef BFD_ASSEMBLER
978 for (i
= SEG_E0
; i
< SEG_UNKNOWN
; i
++)
979 segment_info
[i
].fix_root
= 0;
981 /* Create the three fixed ones */
986 seg
= subseg_new (".wtext", 0);
988 seg
= subseg_new (".text", 0);
990 assert (seg
== SEG_E0
);
991 seg
= subseg_new (".data", 0);
992 assert (seg
== SEG_E1
);
993 seg
= subseg_new (".bss", 0);
994 assert (seg
== SEG_E2
);
996 create_target_segments ();
1000 #else /* not MANY_SEGMENTS */
1001 text_fix_root
= NULL
;
1002 data_fix_root
= NULL
;
1003 bss_fix_root
= NULL
;
1004 #endif /* not MANY_SEGMENTS */
1005 #else /* BFD_ASSEMBLER */
1006 /* Create the standard sections, and those the assembler uses
1008 text_section
= subseg_new (TEXT_SECTION_NAME
, 0);
1009 data_section
= subseg_new (DATA_SECTION_NAME
, 0);
1010 bss_section
= subseg_new (BSS_SECTION_NAME
, 0);
1011 /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed
1012 to have relocs, otherwise we don't find out in time. */
1013 applicable
= bfd_applicable_section_flags (stdoutput
);
1014 bfd_set_section_flags (stdoutput
, text_section
,
1015 applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
1016 | SEC_CODE
| SEC_READONLY
));
1017 bfd_set_section_flags (stdoutput
, data_section
,
1018 applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
1020 bfd_set_section_flags (stdoutput
, bss_section
, applicable
& SEC_ALLOC
);
1021 seg_info (bss_section
)->bss
= 1;
1022 subseg_new (BFD_ABS_SECTION_NAME
, 0);
1023 subseg_new (BFD_UND_SECTION_NAME
, 0);
1024 reg_section
= subseg_new ("*GAS `reg' section*", 0);
1025 expr_section
= subseg_new ("*GAS `expr' section*", 0);
1027 #endif /* BFD_ASSEMBLER */
1029 subseg_set (text_section
, 0);
1031 /* This may add symbol table entries, which requires having an open BFD,
1032 and sections already created, in BFD_ASSEMBLER mode. */
1039 argv
++; /* skip argv[0] */
1040 argc
--; /* skip argv[0] */
1044 { /* Is it a file-name argument? */
1047 /* argv->"" if stdin desired, else->filename */
1048 read_a_source_file (*argv
);
1050 argv
++; /* completed that argv */
1053 read_a_source_file ("");
1054 } /* perform_an_assembly_pass() */
1056 /* The interface between the macro code and gas expression handling. */
1059 macro_expr (emsg
, idx
, in
, val
)
1070 hold
= input_line_pointer
;
1071 input_line_pointer
= in
->ptr
+ idx
;
1073 idx
= input_line_pointer
- in
->ptr
;
1074 input_line_pointer
= hold
;
1076 if (ex
.X_op
!= O_constant
)
1077 as_bad ("%s", emsg
);
1079 *val
= (int) ex
.X_add_number
;