1 /* as.c - GAS main program.
2 Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
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
;
123 fprintf (stderr
, _("GNU assembler version %s (%s) using BFD version %s"),
124 VERSION
, TARGET_ALIAS
, BFD_VERSION
);
126 fprintf (stderr
, _("GNU assembler version %s (%s)"), VERSION
, TARGET_ALIAS
);
128 fprintf (stderr
, "\n");
135 fprintf (stream
, _("Usage: %s [option...] [asmfile...]\n"), myname
);
137 fprintf (stream
, _("\
139 -a[sub-option...] turn on listings\n\
140 Sub-options [default hls]:\n\
141 c omit false conditionals\n\
142 d omit debugging directives\n\
143 h include high-level source\n\
144 l include assembly\n\
145 m include macro expansions\n\
146 n omit forms processing\n\
148 L include line debug statistics (if applicable)\n\
149 =file set listing file name (must be last sub-option)\n"));
151 fprintf (stream
, _("\
152 -D produce assembler debugging messages\n\
153 --defsym SYM=VAL define symbol SYM to given value\n\
154 -f skip whitespace and comment preprocessing\n\
155 --gstabs generate stabs debugging information\n\
156 --gdwarf2 generate DWARF2 debugging information\n\
157 --help show this message and exit\n\
158 -I DIR add DIR to search list for .include directives\n\
159 -J don't warn about signed overflow\n\
160 -K warn when differences altered for long displacements\n\
161 -L,--keep-locals keep local symbols (e.g. starting with `L')\n"));
163 fprintf (stream
, _("\
164 -M,--mri assemble in MRI compatibility mode\n\
165 --MD FILE write dependency information in FILE (default none)\n\
167 -o OBJFILE name the object-file output OBJFILE (default a.out)\n\
168 -R fold data section into text section\n\
169 --statistics print various measured statistics from execution\n\
170 --strip-local-absolute strip local absolute symbols\n\
171 --traditional-format Use same format as native assembler when possible\n\
172 --version print assembler version number and exit\n\
173 -W --no-warn suppress warnings\n\
174 --warn don't suppress warnings\n\
175 --fatal-warnings treat warnings as errors\n\
176 --itbl INSTTBL extend instruction set to include instructions\n\
177 matching the specifications defined in file INSTTBL\n\
180 -Z generate object file even after errors\n"));
182 fprintf (stream
, _("\
183 --listing-lhs-width set the width in words of the output data column of\n\
185 --listing-lhs-width2 set the width in words of the continuation lines\n\
186 of the output data column; ignored if smaller than\n\
187 the width of the first line\n\
188 --listing-rhs-width set the max width in characters of the lines from\n\
190 --listing-cont-lines set the maximum number of continuation lines used\n\
191 for the output data column of the listing\n"));
193 md_show_usage (stream
);
195 fprintf (stream
, _("\nReport bugs to bug-gnu-utils@gnu.org\n"));
198 #ifdef USE_EMULATIONS
199 #define EMULATION_ENVIRON "AS_EMULATION"
201 extern struct emulation mipsbelf
, mipslelf
, mipself
;
202 extern struct emulation mipsbecoff
, mipslecoff
, mipsecoff
;
203 extern struct emulation i386coff
, i386elf
;
205 static struct emulation
*const emulations
[] = { EMULATIONS
};
206 static const int n_emulations
= sizeof (emulations
) / sizeof (emulations
[0]);
208 static void select_emulation_mode
PARAMS ((int, char **));
211 select_emulation_mode (argc
, argv
)
218 for (i
= 1; i
< argc
; i
++)
219 if (!strncmp ("--em", argv
[i
], 4))
225 p
= strchr (argv
[i
], '=');
232 as_fatal (_("missing emulation mode name"));
237 em
= getenv (EMULATION_ENVIRON
);
239 em
= DEFAULT_EMULATION
;
243 for (i
= 0; i
< n_emulations
; i
++)
244 if (!strcmp (emulations
[i
]->name
, em
))
246 if (i
== n_emulations
)
247 as_fatal (_("unrecognized emulation name `%s'"), em
);
248 this_emulation
= emulations
[i
];
251 this_emulation
= emulations
[0];
253 this_emulation
->init ();
257 default_emul_bfd_name ()
266 this_format
= this_emulation
->format
;
268 if (this_emulation
->leading_underscore
== 2)
269 this_emulation
->leading_underscore
= this_format
->dfl_leading_underscore
;
271 if (this_emulation
->default_endian
!= 2)
272 target_big_endian
= this_emulation
->default_endian
;
274 if (this_emulation
->fake_label_name
== 0)
276 if (this_emulation
->leading_underscore
)
277 this_emulation
->fake_label_name
= "L0\001";
279 /* What other parameters should we test? */
280 this_emulation
->fake_label_name
= ".L0\001";
286 * Since it is easy to do here we interpret the special arg "-"
287 * to mean "use stdin" and we set that argv[] pointing to "".
288 * After we have munged argv[], the only things left are source file
289 * name(s) and ""(s) denoting stdin. These file names are used
290 * (perhaps more than once) later.
292 * check for new machine-dep cmdline options in
293 * md_parse_option definitions in config/tc-*.c
297 parse_args (pargc
, pargv
)
301 int old_argc
, new_argc
;
302 char **old_argv
, **new_argv
;
304 /* Starting the short option string with '-' is for programs that
305 expect options and other ARGV-elements in any order and that care about
306 the ordering of the two. We describe each non-option ARGV-element
307 as if it were the argument of an option with character code 1. */
310 extern CONST
char *md_shortopts
;
311 static const char std_shortopts
[] =
314 #ifndef WORKING_DOT_WORD
315 /* -K is not meaningful if .word is not being hacked. */
318 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':',
320 /* -v takes an argument on VMS, so we don't make it a generic
325 /* New option for extending instruction set (see also --itbl below) */
329 struct option
*longopts
;
330 extern struct option md_longopts
[];
331 extern size_t md_longopts_size
;
332 static const struct option std_longopts
[] = {
333 #define OPTION_HELP (OPTION_STD_BASE)
334 {"help", no_argument
, NULL
, OPTION_HELP
},
335 {"keep-locals", no_argument
, NULL
, 'L'},
336 {"mri", no_argument
, NULL
, 'M'},
337 #define OPTION_NOCPP (OPTION_STD_BASE + 1)
338 {"nocpp", no_argument
, NULL
, OPTION_NOCPP
},
339 #define OPTION_STATISTICS (OPTION_STD_BASE + 2)
340 {"statistics", no_argument
, NULL
, OPTION_STATISTICS
},
341 #define OPTION_VERSION (OPTION_STD_BASE + 3)
342 {"version", no_argument
, NULL
, OPTION_VERSION
},
343 #define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4)
344 {"dump-config", no_argument
, NULL
, OPTION_DUMPCONFIG
},
345 #define OPTION_VERBOSE (OPTION_STD_BASE + 5)
346 {"verbose", no_argument
, NULL
, OPTION_VERBOSE
},
347 #define OPTION_EMULATION (OPTION_STD_BASE + 6)
348 {"emulation", required_argument
, NULL
, OPTION_EMULATION
},
349 #define OPTION_DEFSYM (OPTION_STD_BASE + 7)
350 {"defsym", required_argument
, NULL
, OPTION_DEFSYM
},
351 #define OPTION_INSTTBL (OPTION_STD_BASE + 8)
352 /* New option for extending instruction set (see also -t above).
353 The "-t file" or "--itbl file" option extends the basic set of
354 valid instructions by reading "file", a text file containing a
355 list of instruction formats. The additional opcodes and their
356 formats are added to the built-in set of instructions, and
357 mnemonics for new registers may also be defined. */
358 {"itbl", required_argument
, NULL
, OPTION_INSTTBL
},
359 #define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9)
360 {"listing-lhs-width", required_argument
, NULL
, OPTION_LISTING_LHS_WIDTH
},
361 #define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10)
362 {"listing-lhs-width", required_argument
, NULL
, OPTION_LISTING_LHS_WIDTH2
},
363 #define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11)
364 {"listing-rhs-width", required_argument
, NULL
, OPTION_LISTING_RHS_WIDTH
},
365 #define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12)
366 {"listing-cont-lines", required_argument
, NULL
, OPTION_LISTING_CONT_LINES
},
367 #define OPTION_DEPFILE (OPTION_STD_BASE + 13)
368 {"MD", required_argument
, NULL
, OPTION_DEPFILE
},
369 #define OPTION_GSTABS (OPTION_STD_BASE + 14)
370 {"gstabs", no_argument
, NULL
, OPTION_GSTABS
},
371 #define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15)
372 {"strip-local-absolute", no_argument
, NULL
, OPTION_STRIP_LOCAL_ABSOLUTE
},
373 #define OPTION_TRADITIONAL_FORMAT (OPTION_STD_BASE + 16)
374 {"traditional-format", no_argument
, NULL
, OPTION_TRADITIONAL_FORMAT
},
375 #define OPTION_GDWARF2 (OPTION_STD_BASE + 17)
376 {"gdwarf2", no_argument
, NULL
, OPTION_GDWARF2
},
377 {"no-warn", no_argument
, NULL
, 'W'},
378 #define OPTION_WARN (OPTION_STD_BASE + 18)
379 {"warn", no_argument
, NULL
, OPTION_WARN
},
380 #define OPTION_WARN_FATAL (OPTION_STD_BASE + 19)
381 {"fatal-warnings", no_argument
, NULL
, OPTION_WARN_FATAL
}
384 /* Construct the option lists from the standard list and the
385 target dependent list. */
386 shortopts
= concat (std_shortopts
, md_shortopts
, (char *) NULL
);
387 longopts
= (struct option
*) xmalloc (sizeof (std_longopts
) + md_longopts_size
);
388 memcpy (longopts
, std_longopts
, sizeof (std_longopts
));
389 memcpy ((char *) longopts
+ sizeof (std_longopts
),
390 md_longopts
, md_longopts_size
);
392 /* Make a local copy of the old argv. */
396 /* Initialize a new argv that contains no options. */
397 new_argv
= (char **) xmalloc (sizeof (char *) * (old_argc
+ 1));
398 new_argv
[0] = old_argv
[0];
400 new_argv
[new_argc
] = NULL
;
404 /* getopt_long_only is like getopt_long, but '-' as well as '--' can
405 indicate a long option. */
407 int optc
= getopt_long_only (old_argc
, old_argv
, shortopts
, longopts
,
416 /* md_parse_option should return 1 if it recognizes optc,
418 if (md_parse_option (optc
, optarg
) != 0)
420 /* `-v' isn't included in the general short_opts list, so check for
421 it explicity here before deciding we've gotten a bad argument. */
425 /* Telling getopt to treat -v's value as optional can result
426 in it picking up a following filename argument here. The
427 VMS code in md_parse_option can return 0 in that case,
428 but it has no way of pushing the filename argument back. */
429 if (optarg
&& *optarg
)
430 new_argv
[new_argc
++] = optarg
, new_argv
[new_argc
] = NULL
;
444 case 1: /* File name. */
445 if (!strcmp (optarg
, "-"))
447 new_argv
[new_argc
++] = optarg
;
448 new_argv
[new_argc
] = NULL
;
458 case OPTION_STATISTICS
:
459 flag_print_statistics
= 1;
462 case OPTION_STRIP_LOCAL_ABSOLUTE
:
463 flag_strip_local_absolute
= 1;
466 case OPTION_TRADITIONAL_FORMAT
:
467 flag_traditional_format
= 1;
471 /* This output is intended to follow the GNU standards document. */
472 printf (_("GNU assembler %s\n"), VERSION
);
473 printf (_("Copyright 1997 Free Software Foundation, Inc.\n"));
475 This program is free software; you may redistribute it under the terms of\n\
476 the GNU General Public License. This program has absolutely no warranty.\n"));
477 printf (_("This assembler was configured for a target of `%s'.\n"),
481 case OPTION_EMULATION
:
482 #ifdef USE_EMULATIONS
483 if (strcmp (optarg
, this_emulation
->name
))
484 as_fatal (_("multiple emulation names specified"));
486 as_fatal (_("emulations not handled in this configuration"));
490 case OPTION_DUMPCONFIG
:
491 fprintf (stderr
, _("alias = %s\n"), TARGET_ALIAS
);
492 fprintf (stderr
, _("canonical = %s\n"), TARGET_CANONICAL
);
493 fprintf (stderr
, _("cpu-type = %s\n"), TARGET_CPU
);
494 #ifdef TARGET_OBJ_FORMAT
495 fprintf (stderr
, _("format = %s\n"), TARGET_OBJ_FORMAT
);
498 fprintf (stderr
, _("bfd-target = %s\n"), TARGET_FORMAT
);
506 struct defsym_list
*n
;
508 for (s
= optarg
; *s
!= '\0' && *s
!= '='; s
++)
511 as_fatal (_("bad defsym; format is --defsym name=value"));
513 i
= strtol (s
, (char **) NULL
, 0);
514 n
= (struct defsym_list
*) xmalloc (sizeof *n
);
525 /* optarg is the name of the file containing the instruction
526 formats, opcodes, register names, etc. */
527 struct itbl_file_list
*n
;
531 as_warn ( _("No file name following -t option\n") );
535 n
= (struct itbl_file_list
*) xmalloc (sizeof *n
);
536 n
->next
= itbl_files
;
540 /* Parse the file and add the new instructions to our internal
541 table. If multiple instruction tables are specified, the
542 information from this table gets appended onto the existing
544 itbl_files
->name
= xstrdup (optarg
);
545 if (itbl_parse (itbl_files
->name
) != 0)
547 fprintf (stderr
, _("Failed to read instruction table %s\n"),
555 start_dependencies (optarg
);
559 debug_type
= DEBUG_STABS
;
563 debug_type
= DEBUG_DWARF2
;
567 flag_signed_overflow_ok
= 1;
570 #ifndef WORKING_DOT_WORD
572 flag_warn_displacement
= 1;
577 flag_keep_locals
= 1;
580 case OPTION_LISTING_LHS_WIDTH
:
581 listing_lhs_width
= atoi(optarg
);
582 if (listing_lhs_width_second
< listing_lhs_width
)
583 listing_lhs_width_second
= listing_lhs_width
;
585 case OPTION_LISTING_LHS_WIDTH2
:
587 int tmp
= atoi(optarg
);
588 if (tmp
> listing_lhs_width
)
589 listing_lhs_width_second
= tmp
;
592 case OPTION_LISTING_RHS_WIDTH
:
593 listing_rhs_width
= atoi(optarg
);
595 case OPTION_LISTING_CONT_LINES
:
596 listing_lhs_cont_lines
= atoi(optarg
);
607 flag_readonly_data_in_text
= 1;
611 flag_no_warnings
= 1;
615 flag_no_warnings
= 0;
616 flag_fatal_warnings
= 0;
619 case OPTION_WARN_FATAL
:
620 flag_no_warnings
= 0;
621 flag_fatal_warnings
= 1;
625 flag_always_generate_output
= 1;
636 listing
|= LISTING_NOCOND
;
639 listing
|= LISTING_NODEBUG
;
642 listing
|= LISTING_HLL
;
645 listing
|= LISTING_LISTING
;
648 listing
|= LISTING_MACEXP
;
651 listing
|= LISTING_NOFORM
;
654 listing
|= LISTING_SYMBOLS
;
657 listing_filename
= xstrdup (optarg
+ 1);
658 optarg
+= strlen (listing_filename
);
661 as_fatal (_("invalid listing option `%c'"), *optarg
);
668 listing
= LISTING_DEFAULT
;
672 /* DEBUG is implemented: it debugs different */
673 /* things from other people's assemblers. */
678 flag_no_comments
= 1;
682 { /* Include file directory */
683 char *temp
= xstrdup (optarg
);
684 add_include_dir (temp
);
689 out_file_name
= xstrdup (optarg
);
696 /* -X means treat warnings as errors */
708 static long start_time
;
719 start_time
= get_run_time ();
721 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
722 setlocale (LC_MESSAGES
, "");
724 bindtextdomain (PACKAGE
, LOCALEDIR
);
725 textdomain (PACKAGE
);
730 extern long _bfd_chunksize
;
736 #ifdef HOST_SPECIAL_INIT
737 HOST_SPECIAL_INIT (argc
, argv
);
741 xmalloc_set_program_name (myname
);
743 START_PROGRESS (myname
, 0);
745 #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME
746 #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out"
749 out_file_name
= OBJ_DEFAULT_OUTPUT_FILE_NAME
;
754 bfd_set_error_program_name (myname
);
757 #ifdef USE_EMULATIONS
758 select_emulation_mode (argc
, argv
);
765 parse_args (&argc
, &argv
);
767 input_scrub_begin ();
770 if (flag_print_statistics
)
771 xatexit (dump_statistics
);
776 macro_strip_at
= flag_mri
;
779 /* For compatibility with the AMD 29K family macro assembler
785 macro_init (macro_alternate
, flag_mri
, macro_strip_at
, macro_expr
);
790 output_file_create (out_file_name
);
791 assert (stdoutput
!= 0);
794 #ifdef tc_init_after_args
795 tc_init_after_args ();
800 /* Now that we have fully initialized, and have created the output
801 file, define any symbols requested by --defsym command line
803 while (defsyms
!= NULL
)
806 struct defsym_list
*next
;
808 sym
= symbol_new (defsyms
->name
, absolute_section
, defsyms
->value
,
810 symbol_table_insert (sym
);
811 next
= defsyms
->next
;
818 perform_an_assembly_pass (argc
, argv
); /* Assemble it. */
820 cond_finish_check (-1);
826 if (seen_at_least_1_file ()
827 && (flag_always_generate_output
|| had_errors () == 0))
832 #if defined (BFD_ASSEMBLER) || !defined (BFD)
833 /* This used to be done at the start of write_object_file in
834 write.c, but that caused problems when doing listings when
835 keep_it was zero. This could probably be moved above md_end, but
836 I didn't want to risk the change. */
841 write_object_file ();
844 listing_print (listing_filename
);
847 #ifndef OBJ_VMS /* does its own file handling */
848 #ifndef BFD_ASSEMBLER
851 output_file_close (out_file_name
);
854 if (flag_fatal_warnings
&& had_warnings() > 0 && had_errors () == 0)
855 as_bad (_("%d warnings, treating warnings as errors"), had_warnings());
857 if (had_errors () > 0 && ! flag_always_generate_output
)
861 unlink (out_file_name
);
865 END_PROGRESS (myname
);
867 /* Use xexit instead of return, because under VMS environments they
868 may not place the same interpretation on the value given. */
869 if (had_errors () > 0)
870 xexit (EXIT_FAILURE
);
872 /* Only generate dependency file if assembler was successful. */
873 print_dependencies ();
875 xexit (EXIT_SUCCESS
);
882 char *lim
= (char *) sbrk (0);
884 long run_time
= get_run_time () - start_time
;
886 fprintf (stderr
, _("%s: total time in assembly: %ld.%06ld\n"),
887 myname
, run_time
/ 1000000, run_time
% 1000000);
889 fprintf (stderr
, _("%s: data size %ld\n"),
890 myname
, (long) (lim
- (char *) &environ
));
893 subsegs_print_statistics (stderr
);
894 write_print_statistics (stderr
);
895 symbol_print_statistics (stderr
);
896 read_print_statistics (stderr
);
898 #ifdef tc_print_statistics
899 tc_print_statistics (stderr
);
901 #ifdef obj_print_statistics
902 obj_print_statistics (stderr
);
907 /* perform_an_assembly_pass()
909 * Here to attempt 1 pass over each input file.
910 * We scan argv[*] looking for filenames or exactly "" which is
911 * shorthand for stdin. Any argv that is NULL is not a file-name.
912 * We set need_pass_2 TRUE if, after this, we still have unresolved
913 * expressions of the form (unknown value)+-(unknown value).
915 * Note the un*x semantics: there is only 1 logical input file, but it
916 * may be a catenation of many 'physical' input files.
919 perform_an_assembly_pass (argc
, argv
)
930 #ifndef BFD_ASSEMBLER
934 for (i
= SEG_E0
; i
< SEG_UNKNOWN
; i
++)
935 segment_info
[i
].fix_root
= 0;
937 /* Create the three fixed ones */
942 seg
= subseg_new (".wtext", 0);
944 seg
= subseg_new (".text", 0);
946 assert (seg
== SEG_E0
);
947 seg
= subseg_new (".data", 0);
948 assert (seg
== SEG_E1
);
949 seg
= subseg_new (".bss", 0);
950 assert (seg
== SEG_E2
);
952 create_target_segments ();
956 #else /* not MANY_SEGMENTS */
957 text_fix_root
= NULL
;
958 data_fix_root
= NULL
;
960 #endif /* not MANY_SEGMENTS */
961 #else /* BFD_ASSEMBLER */
962 /* Create the standard sections, and those the assembler uses
964 text_section
= subseg_new (TEXT_SECTION_NAME
, 0);
965 data_section
= subseg_new (DATA_SECTION_NAME
, 0);
966 bss_section
= subseg_new (BSS_SECTION_NAME
, 0);
967 /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed
968 to have relocs, otherwise we don't find out in time. */
969 applicable
= bfd_applicable_section_flags (stdoutput
);
970 bfd_set_section_flags (stdoutput
, text_section
,
971 applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
972 | SEC_CODE
| SEC_READONLY
));
973 bfd_set_section_flags (stdoutput
, data_section
,
974 applicable
& (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
976 bfd_set_section_flags (stdoutput
, bss_section
, applicable
& SEC_ALLOC
);
977 seg_info (bss_section
)->bss
= 1;
978 subseg_new (BFD_ABS_SECTION_NAME
, 0);
979 subseg_new (BFD_UND_SECTION_NAME
, 0);
980 reg_section
= subseg_new ("*GAS `reg' section*", 0);
981 expr_section
= subseg_new ("*GAS `expr' section*", 0);
983 #endif /* BFD_ASSEMBLER */
985 subseg_set (text_section
, 0);
987 /* This may add symbol table entries, which requires having an open BFD,
988 and sections already created, in BFD_ASSEMBLER mode. */
995 argv
++; /* skip argv[0] */
996 argc
--; /* skip argv[0] */
1000 { /* Is it a file-name argument? */
1003 /* argv->"" if stdin desired, else->filename */
1004 read_a_source_file (*argv
);
1006 argv
++; /* completed that argv */
1009 read_a_source_file ("");
1010 } /* perform_an_assembly_pass() */
1012 /* The interface between the macro code and gas expression handling. */
1015 macro_expr (emsg
, idx
, in
, val
)
1026 hold
= input_line_pointer
;
1027 input_line_pointer
= in
->ptr
+ idx
;
1029 idx
= input_line_pointer
- in
->ptr
;
1030 input_line_pointer
= hold
;
1032 if (ex
.X_op
!= O_constant
)
1033 as_bad ("%s", emsg
);
1035 *val
= (int) ex
.X_add_number
;