Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* as.c - GAS main program. |
f7e42eb4 | 2 | Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
2a538ba5 | 3 | 1999, 2000, 2001, 2002 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | ||
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
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) | |
11 | any later version. | |
12 | ||
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. | |
17 | ||
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 | |
76b0a8c0 | 21 | 02111-1307, USA. */ |
252b5132 | 22 | |
76b0a8c0 | 23 | /* Main program for AS; a 32-bit assembler of GNU. |
252b5132 RH |
24 | * Understands command arguments. |
25 | * Has a few routines that don't fit in other modules because they | |
26 | * are shared. | |
27 | * | |
252b5132 RH |
28 | * bugs |
29 | * | |
30 | * : initialisers | |
31 | * Since no-one else says they will support them in future: I | |
32 | * don't support them now. | |
252b5132 RH |
33 | */ |
34 | ||
35 | #include "ansidecl.h" | |
36 | ||
37 | #define COMMON | |
38 | ||
39 | #include "as.h" | |
40 | #include "subsegs.h" | |
41 | #include "output-file.h" | |
42 | #include "sb.h" | |
43 | #include "macro.h" | |
bccba5f0 | 44 | #include "dwarf2dbg.h" |
252b5132 | 45 | |
b95d15c6 AM |
46 | #ifdef BFD_ASSEMBLER |
47 | #include "bfdver.h" | |
48 | #endif | |
49 | ||
84be4d71 ILT |
50 | #ifdef HAVE_ITBL_CPU |
51 | #include "itbl-ops.h" | |
52 | #else | |
252b5132 RH |
53 | #define itbl_parse(itbl_file) 1 |
54 | #define itbl_init() | |
55 | #endif | |
56 | ||
57 | #ifdef HAVE_SBRK | |
58 | #ifdef NEED_DECLARATION_SBRK | |
59 | extern PTR sbrk (); | |
60 | #endif | |
61 | #endif | |
62 | ||
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 *)); | |
9cc92a36 NC |
68 | #ifdef USING_CGEN |
69 | /* Perform any cgen specific initialisation for gas. */ | |
70 | extern void gas_cgen_begin PARAMS ((void)); | |
71 | #endif | |
252b5132 | 72 | |
76b0a8c0 KH |
73 | /* True if a listing is wanted. */ |
74 | int listing; | |
252b5132 | 75 | |
76b0a8c0 KH |
76 | /* Name of listing file. */ |
77 | static char *listing_filename = NULL; | |
252b5132 RH |
78 | |
79 | /* Type of debugging to generate. */ | |
80 | ||
4dc7ead9 | 81 | enum debug_info_type debug_type = DEBUG_UNSPECIFIED; |
252b5132 RH |
82 | |
83 | /* Maximum level of macro nesting. */ | |
252b5132 RH |
84 | int max_macro_nest = 100; |
85 | ||
76b0a8c0 KH |
86 | /* argv[0] */ |
87 | char *myname; | |
252b5132 RH |
88 | #ifdef BFD_ASSEMBLER |
89 | segT reg_section, expr_section; | |
90 | segT text_section, data_section, bss_section; | |
91 | #endif | |
92 | ||
93 | /* The default obstack chunk size. If we set this to zero, the | |
94 | obstack code will use whatever will fit in a 4096 byte block. */ | |
95 | int chunksize = 0; | |
96 | ||
97 | /* To monitor memory allocation more effectively, make this non-zero. | |
98 | Then the chunk sizes for gas and bfd will be reduced. */ | |
99 | int debug_memory = 0; | |
100 | ||
101 | /* We build a list of defsyms as we read the options, and then define | |
102 | them after we have initialized everything. */ | |
103 | ||
30a2b4ef | 104 | struct defsym_list { |
252b5132 RH |
105 | struct defsym_list *next; |
106 | char *name; | |
107 | valueT value; | |
108 | }; | |
109 | ||
110 | static struct defsym_list *defsyms; | |
111 | ||
76b0a8c0 | 112 | /* Keep a record of the itbl files we read in. */ |
252b5132 | 113 | |
30a2b4ef | 114 | struct itbl_file_list { |
252b5132 RH |
115 | struct itbl_file_list *next; |
116 | char *name; | |
117 | }; | |
118 | ||
119 | static struct itbl_file_list *itbl_files; | |
120 | \f | |
252b5132 RH |
121 | #ifdef USE_EMULATIONS |
122 | #define EMULATION_ENVIRON "AS_EMULATION" | |
123 | ||
124 | extern struct emulation mipsbelf, mipslelf, mipself; | |
125 | extern struct emulation mipsbecoff, mipslecoff, mipsecoff; | |
4c63da97 | 126 | extern struct emulation i386coff, i386elf, i386aout; |
3bcbcc3d | 127 | extern struct emulation crisaout, criself; |
252b5132 RH |
128 | |
129 | static struct emulation *const emulations[] = { EMULATIONS }; | |
130 | static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]); | |
131 | ||
132 | static void select_emulation_mode PARAMS ((int, char **)); | |
133 | ||
134 | static void | |
135 | select_emulation_mode (argc, argv) | |
136 | int argc; | |
137 | char **argv; | |
138 | { | |
139 | int i; | |
140 | char *p, *em = 0; | |
141 | ||
142 | for (i = 1; i < argc; i++) | |
143 | if (!strncmp ("--em", argv[i], 4)) | |
144 | break; | |
145 | ||
146 | if (i == argc) | |
147 | goto do_default; | |
148 | ||
149 | p = strchr (argv[i], '='); | |
150 | if (p) | |
151 | p++; | |
152 | else | |
76b0a8c0 | 153 | p = argv[i + 1]; |
252b5132 RH |
154 | |
155 | if (!p || !*p) | |
156 | as_fatal (_("missing emulation mode name")); | |
157 | em = p; | |
158 | ||
159 | do_default: | |
160 | if (em == 0) | |
161 | em = getenv (EMULATION_ENVIRON); | |
162 | if (em == 0) | |
163 | em = DEFAULT_EMULATION; | |
164 | ||
165 | if (em) | |
166 | { | |
167 | for (i = 0; i < n_emulations; i++) | |
168 | if (!strcmp (emulations[i]->name, em)) | |
169 | break; | |
170 | if (i == n_emulations) | |
171 | as_fatal (_("unrecognized emulation name `%s'"), em); | |
172 | this_emulation = emulations[i]; | |
173 | } | |
174 | else | |
175 | this_emulation = emulations[0]; | |
176 | ||
177 | this_emulation->init (); | |
178 | } | |
179 | ||
180 | const char * | |
181 | default_emul_bfd_name () | |
182 | { | |
183 | abort (); | |
184 | return NULL; | |
185 | } | |
186 | ||
187 | void | |
188 | common_emul_init () | |
189 | { | |
190 | this_format = this_emulation->format; | |
191 | ||
192 | if (this_emulation->leading_underscore == 2) | |
193 | this_emulation->leading_underscore = this_format->dfl_leading_underscore; | |
194 | ||
195 | if (this_emulation->default_endian != 2) | |
196 | target_big_endian = this_emulation->default_endian; | |
197 | ||
198 | if (this_emulation->fake_label_name == 0) | |
199 | { | |
200 | if (this_emulation->leading_underscore) | |
201 | this_emulation->fake_label_name = "L0\001"; | |
202 | else | |
203 | /* What other parameters should we test? */ | |
204 | this_emulation->fake_label_name = ".L0\001"; | |
205 | } | |
206 | } | |
207 | #endif | |
208 | ||
4c63da97 AM |
209 | void |
210 | print_version_id () | |
211 | { | |
212 | static int printed; | |
213 | if (printed) | |
214 | return; | |
215 | printed = 1; | |
216 | ||
217 | #ifdef BFD_ASSEMBLER | |
218 | fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s"), | |
403487ec | 219 | VERSION, TARGET_ALIAS, BFD_VERSION_STRING); |
4c63da97 AM |
220 | #else |
221 | fprintf (stderr, _("GNU assembler version %s (%s)"), VERSION, TARGET_ALIAS); | |
222 | #endif | |
223 | fprintf (stderr, "\n"); | |
224 | } | |
225 | ||
226 | static void | |
227 | show_usage (stream) | |
228 | FILE *stream; | |
229 | { | |
230 | fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname); | |
231 | ||
232 | fprintf (stream, _("\ | |
233 | Options:\n\ | |
234 | -a[sub-option...] turn on listings\n\ | |
235 | Sub-options [default hls]:\n\ | |
236 | c omit false conditionals\n\ | |
237 | d omit debugging directives\n\ | |
238 | h include high-level source\n\ | |
239 | l include assembly\n\ | |
240 | m include macro expansions\n\ | |
241 | n omit forms processing\n\ | |
242 | s include symbols\n\ | |
4c63da97 AM |
243 | =FILE list to FILE (must be last sub-option)\n")); |
244 | ||
245 | fprintf (stream, _("\ | |
246 | -D produce assembler debugging messages\n")); | |
247 | fprintf (stream, _("\ | |
248 | --defsym SYM=VAL define symbol SYM to given value\n")); | |
249 | #ifdef USE_EMULATIONS | |
250 | { | |
251 | int i; | |
252 | char *def_em; | |
253 | ||
254 | fprintf (stream, "\ | |
255 | --em=["); | |
76b0a8c0 | 256 | for (i = 0; i < n_emulations - 1; i++) |
4c63da97 AM |
257 | fprintf (stream, "%s | ", emulations[i]->name); |
258 | fprintf (stream, "%s]\n", emulations[i]->name); | |
259 | ||
260 | def_em = getenv (EMULATION_ENVIRON); | |
76b0a8c0 | 261 | if (!def_em) |
4c63da97 AM |
262 | def_em = DEFAULT_EMULATION; |
263 | fprintf (stream, _("\ | |
264 | emulate output (default %s)\n"), def_em); | |
265 | } | |
266 | #endif | |
267 | fprintf (stream, _("\ | |
268 | -f skip whitespace and comment preprocessing\n")); | |
269 | fprintf (stream, _("\ | |
270 | --gstabs generate stabs debugging information\n")); | |
271 | fprintf (stream, _("\ | |
272 | --gdwarf2 generate DWARF2 debugging information\n")); | |
273 | fprintf (stream, _("\ | |
274 | --help show this message and exit\n")); | |
275 | fprintf (stream, _("\ | |
ea20a7da CC |
276 | --target-help show target specific options\n")); |
277 | fprintf (stream, _("\ | |
4c63da97 AM |
278 | -I DIR add DIR to search list for .include directives\n")); |
279 | fprintf (stream, _("\ | |
280 | -J don't warn about signed overflow\n")); | |
281 | fprintf (stream, _("\ | |
282 | -K warn when differences altered for long displacements\n")); | |
283 | fprintf (stream, _("\ | |
284 | -L,--keep-locals keep local symbols (e.g. starting with `L')\n")); | |
285 | fprintf (stream, _("\ | |
286 | -M,--mri assemble in MRI compatibility mode\n")); | |
287 | fprintf (stream, _("\ | |
288 | --MD FILE write dependency information in FILE (default none)\n")); | |
289 | fprintf (stream, _("\ | |
290 | -nocpp ignored\n")); | |
291 | fprintf (stream, _("\ | |
292 | -o OBJFILE name the object-file output OBJFILE (default a.out)\n")); | |
293 | fprintf (stream, _("\ | |
294 | -R fold data section into text section\n")); | |
295 | fprintf (stream, _("\ | |
296 | --statistics print various measured statistics from execution\n")); | |
297 | fprintf (stream, _("\ | |
298 | --strip-local-absolute strip local absolute symbols\n")); | |
299 | fprintf (stream, _("\ | |
300 | --traditional-format Use same format as native assembler when possible\n")); | |
301 | fprintf (stream, _("\ | |
302 | --version print assembler version number and exit\n")); | |
303 | fprintf (stream, _("\ | |
304 | -W --no-warn suppress warnings\n")); | |
305 | fprintf (stream, _("\ | |
306 | --warn don't suppress warnings\n")); | |
307 | fprintf (stream, _("\ | |
308 | --fatal-warnings treat warnings as errors\n")); | |
309 | fprintf (stream, _("\ | |
310 | --itbl INSTTBL extend instruction set to include instructions\n\ | |
311 | matching the specifications defined in file INSTTBL\n")); | |
312 | fprintf (stream, _("\ | |
313 | -w ignored\n")); | |
314 | fprintf (stream, _("\ | |
315 | -X ignored\n")); | |
316 | fprintf (stream, _("\ | |
317 | -Z generate object file even after errors\n")); | |
318 | fprintf (stream, _("\ | |
319 | --listing-lhs-width set the width in words of the output data column of\n\ | |
320 | the listing\n")); | |
321 | fprintf (stream, _("\ | |
322 | --listing-lhs-width2 set the width in words of the continuation lines\n\ | |
323 | of the output data column; ignored if smaller than\n\ | |
324 | the width of the first line\n")); | |
325 | fprintf (stream, _("\ | |
326 | --listing-rhs-width set the max width in characters of the lines from\n\ | |
327 | the source file\n")); | |
328 | fprintf (stream, _("\ | |
329 | --listing-cont-lines set the maximum number of continuation lines used\n\ | |
330 | for the output data column of the listing\n")); | |
331 | ||
332 | md_show_usage (stream); | |
333 | ||
c20f4f8c | 334 | fputc ('\n', stream); |
8ad3436c | 335 | fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); |
4c63da97 AM |
336 | } |
337 | ||
76b0a8c0 KH |
338 | /* Since it is easy to do here we interpret the special arg "-" |
339 | to mean "use stdin" and we set that argv[] pointing to "". | |
340 | After we have munged argv[], the only things left are source file | |
341 | name(s) and ""(s) denoting stdin. These file names are used | |
342 | (perhaps more than once) later. | |
343 | ||
344 | check for new machine-dep cmdline options in | |
345 | md_parse_option definitions in config/tc-*.c. */ | |
252b5132 RH |
346 | |
347 | static void | |
348 | parse_args (pargc, pargv) | |
349 | int *pargc; | |
350 | char ***pargv; | |
351 | { | |
352 | int old_argc, new_argc; | |
353 | char **old_argv, **new_argv; | |
354 | ||
355 | /* Starting the short option string with '-' is for programs that | |
356 | expect options and other ARGV-elements in any order and that care about | |
357 | the ordering of the two. We describe each non-option ARGV-element | |
358 | as if it were the argument of an option with character code 1. */ | |
359 | ||
360 | char *shortopts; | |
5a38dc70 | 361 | extern const char *md_shortopts; |
30a2b4ef KH |
362 | static const char std_shortopts[] = { |
363 | '-', 'J', | |
252b5132 | 364 | #ifndef WORKING_DOT_WORD |
30a2b4ef KH |
365 | /* -K is not meaningful if .word is not being hacked. */ |
366 | 'K', | |
252b5132 | 367 | #endif |
30a2b4ef | 368 | 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':', |
252b5132 | 369 | #ifndef VMS |
30a2b4ef KH |
370 | /* -v takes an argument on VMS, so we don't make it a generic |
371 | option. */ | |
372 | 'v', | |
252b5132 | 373 | #endif |
30a2b4ef KH |
374 | 'w', 'X', |
375 | /* New option for extending instruction set (see also --itbl below) */ | |
376 | 't', ':', | |
377 | '\0' | |
378 | }; | |
252b5132 RH |
379 | struct option *longopts; |
380 | extern struct option md_longopts[]; | |
381 | extern size_t md_longopts_size; | |
382 | static const struct option std_longopts[] = { | |
383 | #define OPTION_HELP (OPTION_STD_BASE) | |
384 | {"help", no_argument, NULL, OPTION_HELP}, | |
9c3b31c6 NC |
385 | /* getopt allows abbreviations, so we do this to stop it from |
386 | treating -k as an abbreviation for --keep-locals. Some | |
387 | ports use -k to enable PIC assembly. */ | |
388 | {"keep-locals", no_argument, NULL, 'L'}, | |
252b5132 RH |
389 | {"keep-locals", no_argument, NULL, 'L'}, |
390 | {"mri", no_argument, NULL, 'M'}, | |
391 | #define OPTION_NOCPP (OPTION_STD_BASE + 1) | |
392 | {"nocpp", no_argument, NULL, OPTION_NOCPP}, | |
393 | #define OPTION_STATISTICS (OPTION_STD_BASE + 2) | |
394 | {"statistics", no_argument, NULL, OPTION_STATISTICS}, | |
395 | #define OPTION_VERSION (OPTION_STD_BASE + 3) | |
396 | {"version", no_argument, NULL, OPTION_VERSION}, | |
397 | #define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4) | |
398 | {"dump-config", no_argument, NULL, OPTION_DUMPCONFIG}, | |
399 | #define OPTION_VERBOSE (OPTION_STD_BASE + 5) | |
400 | {"verbose", no_argument, NULL, OPTION_VERBOSE}, | |
401 | #define OPTION_EMULATION (OPTION_STD_BASE + 6) | |
402 | {"emulation", required_argument, NULL, OPTION_EMULATION}, | |
403 | #define OPTION_DEFSYM (OPTION_STD_BASE + 7) | |
404 | {"defsym", required_argument, NULL, OPTION_DEFSYM}, | |
405 | #define OPTION_INSTTBL (OPTION_STD_BASE + 8) | |
406 | /* New option for extending instruction set (see also -t above). | |
407 | The "-t file" or "--itbl file" option extends the basic set of | |
408 | valid instructions by reading "file", a text file containing a | |
409 | list of instruction formats. The additional opcodes and their | |
410 | formats are added to the built-in set of instructions, and | |
411 | mnemonics for new registers may also be defined. */ | |
412 | {"itbl", required_argument, NULL, OPTION_INSTTBL}, | |
413 | #define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9) | |
414 | {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH}, | |
415 | #define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10) | |
3c5cdb54 | 416 | {"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2}, |
252b5132 RH |
417 | #define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11) |
418 | {"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH}, | |
419 | #define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12) | |
420 | {"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES}, | |
421 | #define OPTION_DEPFILE (OPTION_STD_BASE + 13) | |
422 | {"MD", required_argument, NULL, OPTION_DEPFILE}, | |
423 | #define OPTION_GSTABS (OPTION_STD_BASE + 14) | |
424 | {"gstabs", no_argument, NULL, OPTION_GSTABS}, | |
425 | #define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15) | |
426 | {"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE}, | |
427 | #define OPTION_TRADITIONAL_FORMAT (OPTION_STD_BASE + 16) | |
fac0d250 RH |
428 | {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, |
429 | #define OPTION_GDWARF2 (OPTION_STD_BASE + 17) | |
2bdd6cf5 GK |
430 | {"gdwarf2", no_argument, NULL, OPTION_GDWARF2}, |
431 | {"no-warn", no_argument, NULL, 'W'}, | |
432 | #define OPTION_WARN (OPTION_STD_BASE + 18) | |
433 | {"warn", no_argument, NULL, OPTION_WARN}, | |
ea20a7da CC |
434 | #define OPTION_TARGET_HELP (OPTION_STD_BASE + 19) |
435 | {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, | |
436 | #define OPTION_WARN_FATAL (OPTION_STD_BASE + 20) | |
2bdd6cf5 | 437 | {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL} |
d8374dcd HPN |
438 | /* When you add options here, check that they do not collide with |
439 | OPTION_MD_BASE. See as.h. */ | |
252b5132 RH |
440 | }; |
441 | ||
beb2de9b AC |
442 | /* Construct the option lists from the standard list and the target |
443 | dependent list. Include space for an extra NULL option and | |
76b0a8c0 | 444 | always NULL terminate. */ |
252b5132 | 445 | shortopts = concat (std_shortopts, md_shortopts, (char *) NULL); |
beb2de9b AC |
446 | longopts = (struct option *) xmalloc (sizeof (std_longopts) |
447 | + md_longopts_size | |
448 | + sizeof (struct option)); | |
252b5132 RH |
449 | memcpy (longopts, std_longopts, sizeof (std_longopts)); |
450 | memcpy ((char *) longopts + sizeof (std_longopts), | |
451 | md_longopts, md_longopts_size); | |
beb2de9b AC |
452 | memset ((char *) longopts + sizeof (std_longopts) + md_longopts_size, |
453 | 0, sizeof (struct option)); | |
252b5132 RH |
454 | |
455 | /* Make a local copy of the old argv. */ | |
456 | old_argc = *pargc; | |
457 | old_argv = *pargv; | |
458 | ||
459 | /* Initialize a new argv that contains no options. */ | |
460 | new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1)); | |
461 | new_argv[0] = old_argv[0]; | |
462 | new_argc = 1; | |
463 | new_argv[new_argc] = NULL; | |
464 | ||
465 | while (1) | |
466 | { | |
467 | /* getopt_long_only is like getopt_long, but '-' as well as '--' can | |
468 | indicate a long option. */ | |
469 | int longind; | |
470 | int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts, | |
471 | &longind); | |
472 | ||
473 | if (optc == -1) | |
474 | break; | |
475 | ||
476 | switch (optc) | |
477 | { | |
478 | default: | |
479 | /* md_parse_option should return 1 if it recognizes optc, | |
480 | 0 if not. */ | |
481 | if (md_parse_option (optc, optarg) != 0) | |
482 | break; | |
483 | /* `-v' isn't included in the general short_opts list, so check for | |
484 | it explicity here before deciding we've gotten a bad argument. */ | |
485 | if (optc == 'v') | |
486 | { | |
487 | #ifdef VMS | |
488 | /* Telling getopt to treat -v's value as optional can result | |
489 | in it picking up a following filename argument here. The | |
490 | VMS code in md_parse_option can return 0 in that case, | |
491 | but it has no way of pushing the filename argument back. */ | |
492 | if (optarg && *optarg) | |
30a2b4ef | 493 | new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL; |
252b5132 RH |
494 | else |
495 | #else | |
496 | case 'v': | |
497 | #endif | |
498 | case OPTION_VERBOSE: | |
499 | print_version_id (); | |
500 | break; | |
501 | } | |
76b0a8c0 | 502 | /* Fall through. */ |
252b5132 RH |
503 | |
504 | case '?': | |
505 | exit (EXIT_FAILURE); | |
506 | ||
507 | case 1: /* File name. */ | |
508 | if (!strcmp (optarg, "-")) | |
509 | optarg = ""; | |
510 | new_argv[new_argc++] = optarg; | |
511 | new_argv[new_argc] = NULL; | |
512 | break; | |
ef99799a | 513 | |
ea20a7da | 514 | case OPTION_TARGET_HELP: |
411863a4 KH |
515 | md_show_usage (stdout); |
516 | exit (EXIT_SUCCESS); | |
252b5132 RH |
517 | |
518 | case OPTION_HELP: | |
519 | show_usage (stdout); | |
520 | exit (EXIT_SUCCESS); | |
521 | ||
522 | case OPTION_NOCPP: | |
523 | break; | |
524 | ||
525 | case OPTION_STATISTICS: | |
526 | flag_print_statistics = 1; | |
527 | break; | |
528 | ||
529 | case OPTION_STRIP_LOCAL_ABSOLUTE: | |
530 | flag_strip_local_absolute = 1; | |
531 | break; | |
532 | ||
533 | case OPTION_TRADITIONAL_FORMAT: | |
534 | flag_traditional_format = 1; | |
535 | break; | |
536 | ||
537 | case OPTION_VERSION: | |
538 | /* This output is intended to follow the GNU standards document. */ | |
edde18a5 | 539 | #ifdef BFD_ASSEMBLER |
6c19f338 | 540 | printf (_("GNU assembler %s\n"), BFD_VERSION_STRING); |
edde18a5 AM |
541 | #else |
542 | printf (_("GNU assembler %s\n"), VERSION); | |
543 | #endif | |
2a538ba5 | 544 | printf (_("Copyright 2002 Free Software Foundation, Inc.\n")); |
252b5132 RH |
545 | printf (_("\ |
546 | This program is free software; you may redistribute it under the terms of\n\ | |
547 | the GNU General Public License. This program has absolutely no warranty.\n")); | |
548 | printf (_("This assembler was configured for a target of `%s'.\n"), | |
549 | TARGET_ALIAS); | |
550 | exit (EXIT_SUCCESS); | |
551 | ||
552 | case OPTION_EMULATION: | |
553 | #ifdef USE_EMULATIONS | |
554 | if (strcmp (optarg, this_emulation->name)) | |
555 | as_fatal (_("multiple emulation names specified")); | |
556 | #else | |
557 | as_fatal (_("emulations not handled in this configuration")); | |
558 | #endif | |
559 | break; | |
560 | ||
561 | case OPTION_DUMPCONFIG: | |
562 | fprintf (stderr, _("alias = %s\n"), TARGET_ALIAS); | |
563 | fprintf (stderr, _("canonical = %s\n"), TARGET_CANONICAL); | |
564 | fprintf (stderr, _("cpu-type = %s\n"), TARGET_CPU); | |
565 | #ifdef TARGET_OBJ_FORMAT | |
566 | fprintf (stderr, _("format = %s\n"), TARGET_OBJ_FORMAT); | |
567 | #endif | |
568 | #ifdef TARGET_FORMAT | |
569 | fprintf (stderr, _("bfd-target = %s\n"), TARGET_FORMAT); | |
570 | #endif | |
571 | exit (EXIT_SUCCESS); | |
572 | ||
573 | case OPTION_DEFSYM: | |
574 | { | |
575 | char *s; | |
a38cf1db | 576 | valueT i; |
252b5132 RH |
577 | struct defsym_list *n; |
578 | ||
579 | for (s = optarg; *s != '\0' && *s != '='; s++) | |
580 | ; | |
581 | if (*s == '\0') | |
582 | as_fatal (_("bad defsym; format is --defsym name=value")); | |
583 | *s++ = '\0'; | |
a38cf1db AM |
584 | #ifdef BFD_ASSEMBLER |
585 | i = bfd_scan_vma (s, (const char **) NULL, 0); | |
586 | #else | |
252b5132 | 587 | i = strtol (s, (char **) NULL, 0); |
a38cf1db | 588 | #endif |
252b5132 RH |
589 | n = (struct defsym_list *) xmalloc (sizeof *n); |
590 | n->next = defsyms; | |
591 | n->name = optarg; | |
592 | n->value = i; | |
593 | defsyms = n; | |
594 | } | |
595 | break; | |
596 | ||
597 | case OPTION_INSTTBL: | |
598 | case 't': | |
599 | { | |
76b0a8c0 KH |
600 | /* optarg is the name of the file containing the instruction |
601 | formats, opcodes, register names, etc. */ | |
252b5132 RH |
602 | struct itbl_file_list *n; |
603 | ||
604 | if (optarg == NULL) | |
605 | { | |
0e389e77 | 606 | as_warn (_("no file name following -t option")); |
252b5132 RH |
607 | break; |
608 | } | |
76b0a8c0 | 609 | |
252b5132 RH |
610 | n = (struct itbl_file_list *) xmalloc (sizeof *n); |
611 | n->next = itbl_files; | |
612 | n->name = optarg; | |
613 | itbl_files = n; | |
614 | ||
615 | /* Parse the file and add the new instructions to our internal | |
76b0a8c0 KH |
616 | table. If multiple instruction tables are specified, the |
617 | information from this table gets appended onto the existing | |
618 | internal table. */ | |
252b5132 RH |
619 | itbl_files->name = xstrdup (optarg); |
620 | if (itbl_parse (itbl_files->name) != 0) | |
0e389e77 AM |
621 | as_fatal (_("failed to read instruction table %s\n"), |
622 | itbl_files->name); | |
252b5132 RH |
623 | } |
624 | break; | |
625 | ||
626 | case OPTION_DEPFILE: | |
627 | start_dependencies (optarg); | |
628 | break; | |
629 | ||
630 | case OPTION_GSTABS: | |
631 | debug_type = DEBUG_STABS; | |
632 | break; | |
76b0a8c0 | 633 | |
fac0d250 RH |
634 | case OPTION_GDWARF2: |
635 | debug_type = DEBUG_DWARF2; | |
636 | break; | |
637 | ||
252b5132 RH |
638 | case 'J': |
639 | flag_signed_overflow_ok = 1; | |
640 | break; | |
641 | ||
642 | #ifndef WORKING_DOT_WORD | |
643 | case 'K': | |
644 | flag_warn_displacement = 1; | |
645 | break; | |
646 | #endif | |
647 | ||
648 | case 'L': | |
649 | flag_keep_locals = 1; | |
650 | break; | |
651 | ||
652 | case OPTION_LISTING_LHS_WIDTH: | |
76b0a8c0 | 653 | listing_lhs_width = atoi (optarg); |
252b5132 RH |
654 | if (listing_lhs_width_second < listing_lhs_width) |
655 | listing_lhs_width_second = listing_lhs_width; | |
656 | break; | |
657 | case OPTION_LISTING_LHS_WIDTH2: | |
658 | { | |
76b0a8c0 | 659 | int tmp = atoi (optarg); |
252b5132 RH |
660 | if (tmp > listing_lhs_width) |
661 | listing_lhs_width_second = tmp; | |
662 | } | |
663 | break; | |
664 | case OPTION_LISTING_RHS_WIDTH: | |
76b0a8c0 | 665 | listing_rhs_width = atoi (optarg); |
252b5132 RH |
666 | break; |
667 | case OPTION_LISTING_CONT_LINES: | |
76b0a8c0 | 668 | listing_lhs_cont_lines = atoi (optarg); |
252b5132 RH |
669 | break; |
670 | ||
671 | case 'M': | |
672 | flag_mri = 1; | |
673 | #ifdef TC_M68K | |
674 | flag_m68k_mri = 1; | |
675 | #endif | |
676 | break; | |
677 | ||
678 | case 'R': | |
679 | flag_readonly_data_in_text = 1; | |
680 | break; | |
681 | ||
682 | case 'W': | |
683 | flag_no_warnings = 1; | |
684 | break; | |
685 | ||
2bdd6cf5 GK |
686 | case OPTION_WARN: |
687 | flag_no_warnings = 0; | |
688 | flag_fatal_warnings = 0; | |
689 | break; | |
690 | ||
691 | case OPTION_WARN_FATAL: | |
692 | flag_no_warnings = 0; | |
693 | flag_fatal_warnings = 1; | |
694 | break; | |
695 | ||
252b5132 RH |
696 | case 'Z': |
697 | flag_always_generate_output = 1; | |
698 | break; | |
699 | ||
700 | case 'a': | |
701 | if (optarg) | |
702 | { | |
7f6d05e8 CP |
703 | if (md_parse_option (optc, optarg) != 0) |
704 | break; | |
705 | ||
252b5132 RH |
706 | while (*optarg) |
707 | { | |
708 | switch (*optarg) | |
709 | { | |
710 | case 'c': | |
711 | listing |= LISTING_NOCOND; | |
712 | break; | |
713 | case 'd': | |
714 | listing |= LISTING_NODEBUG; | |
715 | break; | |
716 | case 'h': | |
717 | listing |= LISTING_HLL; | |
718 | break; | |
719 | case 'l': | |
720 | listing |= LISTING_LISTING; | |
721 | break; | |
722 | case 'm': | |
723 | listing |= LISTING_MACEXP; | |
724 | break; | |
725 | case 'n': | |
726 | listing |= LISTING_NOFORM; | |
727 | break; | |
728 | case 's': | |
729 | listing |= LISTING_SYMBOLS; | |
730 | break; | |
731 | case '=': | |
732 | listing_filename = xstrdup (optarg + 1); | |
733 | optarg += strlen (listing_filename); | |
734 | break; | |
735 | default: | |
736 | as_fatal (_("invalid listing option `%c'"), *optarg); | |
737 | break; | |
738 | } | |
739 | optarg++; | |
740 | } | |
741 | } | |
742 | if (!listing) | |
743 | listing = LISTING_DEFAULT; | |
744 | break; | |
745 | ||
746 | case 'D': | |
76b0a8c0 KH |
747 | /* DEBUG is implemented: it debugs different |
748 | things from other people's assemblers. */ | |
252b5132 RH |
749 | flag_debug = 1; |
750 | break; | |
751 | ||
752 | case 'f': | |
753 | flag_no_comments = 1; | |
754 | break; | |
755 | ||
756 | case 'I': | |
76b0a8c0 | 757 | { /* Include file directory. */ |
252b5132 RH |
758 | char *temp = xstrdup (optarg); |
759 | add_include_dir (temp); | |
760 | break; | |
761 | } | |
762 | ||
763 | case 'o': | |
764 | out_file_name = xstrdup (optarg); | |
765 | break; | |
766 | ||
767 | case 'w': | |
768 | break; | |
769 | ||
770 | case 'X': | |
76b0a8c0 | 771 | /* -X means treat warnings as errors. */ |
252b5132 RH |
772 | break; |
773 | } | |
774 | } | |
775 | ||
776 | free (shortopts); | |
777 | free (longopts); | |
778 | ||
779 | *pargc = new_argc; | |
780 | *pargv = new_argv; | |
acebd4ce AS |
781 | |
782 | #ifdef md_after_parse_args | |
783 | md_after_parse_args (); | |
784 | #endif | |
252b5132 RH |
785 | } |
786 | ||
787 | static long start_time; | |
788 | ||
a80076a1 NC |
789 | int main PARAMS ((int, char **)); |
790 | ||
76b0a8c0 | 791 | int |
252b5132 RH |
792 | main (argc, argv) |
793 | int argc; | |
794 | char **argv; | |
795 | { | |
796 | int macro_alternate; | |
797 | int macro_strip_at; | |
798 | int keep_it; | |
799 | ||
800 | start_time = get_run_time (); | |
801 | ||
802 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
803 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
804 | #endif |
805 | #if defined (HAVE_SETLOCALE) | |
806 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
807 | #endif |
808 | bindtextdomain (PACKAGE, LOCALEDIR); | |
809 | textdomain (PACKAGE); | |
810 | ||
811 | if (debug_memory) | |
091e58c1 | 812 | chunksize = 64; |
252b5132 RH |
813 | |
814 | #ifdef HOST_SPECIAL_INIT | |
815 | HOST_SPECIAL_INIT (argc, argv); | |
816 | #endif | |
817 | ||
818 | myname = argv[0]; | |
819 | xmalloc_set_program_name (myname); | |
820 | ||
821 | START_PROGRESS (myname, 0); | |
822 | ||
823 | #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME | |
824 | #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out" | |
825 | #endif | |
826 | ||
827 | out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME; | |
828 | ||
829 | hex_init (); | |
830 | #ifdef BFD_ASSEMBLER | |
831 | bfd_init (); | |
832 | bfd_set_error_program_name (myname); | |
833 | #endif | |
834 | ||
835 | #ifdef USE_EMULATIONS | |
836 | select_emulation_mode (argc, argv); | |
837 | #endif | |
838 | ||
839 | PROGRESS (1); | |
840 | symbol_begin (); | |
841 | frag_init (); | |
842 | subsegs_begin (); | |
76b0a8c0 | 843 | parse_args (&argc, &argv); |
252b5132 RH |
844 | read_begin (); |
845 | input_scrub_begin (); | |
846 | expr_begin (); | |
847 | ||
848 | if (flag_print_statistics) | |
849 | xatexit (dump_statistics); | |
850 | ||
851 | macro_alternate = 0; | |
852 | macro_strip_at = 0; | |
853 | #ifdef TC_I960 | |
854 | macro_strip_at = flag_mri; | |
855 | #endif | |
856 | #ifdef TC_A29K | |
857 | /* For compatibility with the AMD 29K family macro assembler | |
858 | specification. */ | |
859 | macro_alternate = 1; | |
860 | macro_strip_at = 1; | |
861 | #endif | |
862 | ||
863 | macro_init (macro_alternate, flag_mri, macro_strip_at, macro_expr); | |
864 | ||
865 | PROGRESS (1); | |
866 | ||
867 | #ifdef BFD_ASSEMBLER | |
868 | output_file_create (out_file_name); | |
869 | assert (stdoutput != 0); | |
870 | #endif | |
871 | ||
872 | #ifdef tc_init_after_args | |
873 | tc_init_after_args (); | |
874 | #endif | |
875 | ||
876 | itbl_init (); | |
877 | ||
878 | /* Now that we have fully initialized, and have created the output | |
879 | file, define any symbols requested by --defsym command line | |
880 | arguments. */ | |
881 | while (defsyms != NULL) | |
882 | { | |
883 | symbolS *sym; | |
884 | struct defsym_list *next; | |
885 | ||
886 | sym = symbol_new (defsyms->name, absolute_section, defsyms->value, | |
887 | &zero_address_frag); | |
888 | symbol_table_insert (sym); | |
889 | next = defsyms->next; | |
890 | free (defsyms); | |
891 | defsyms = next; | |
892 | } | |
893 | ||
894 | PROGRESS (1); | |
895 | ||
76b0a8c0 KH |
896 | /* Assemble it. */ |
897 | perform_an_assembly_pass (argc, argv); | |
252b5132 RH |
898 | |
899 | cond_finish_check (-1); | |
900 | ||
901 | #ifdef md_end | |
902 | md_end (); | |
903 | #endif | |
904 | ||
43ad3147 | 905 | /* If we've been collecting dwarf2 .debug_line info, either for |
39bb5fe6 RH |
906 | assembly debugging or on behalf of the compiler, emit it now. */ |
907 | dwarf2_finish (); | |
908 | ||
252b5132 RH |
909 | if (seen_at_least_1_file () |
910 | && (flag_always_generate_output || had_errors () == 0)) | |
911 | keep_it = 1; | |
912 | else | |
913 | keep_it = 0; | |
914 | ||
915 | #if defined (BFD_ASSEMBLER) || !defined (BFD) | |
916 | /* This used to be done at the start of write_object_file in | |
917 | write.c, but that caused problems when doing listings when | |
918 | keep_it was zero. This could probably be moved above md_end, but | |
919 | I didn't want to risk the change. */ | |
920 | subsegs_finish (); | |
921 | #endif | |
922 | ||
923 | if (keep_it) | |
924 | write_object_file (); | |
925 | ||
926 | #ifndef NO_LISTING | |
927 | listing_print (listing_filename); | |
928 | #endif | |
929 | ||
930 | #ifndef OBJ_VMS /* does its own file handling */ | |
931 | #ifndef BFD_ASSEMBLER | |
932 | if (keep_it) | |
933 | #endif | |
934 | output_file_close (out_file_name); | |
935 | #endif | |
936 | ||
76b0a8c0 KH |
937 | if (flag_fatal_warnings && had_warnings () > 0 && had_errors () == 0) |
938 | as_bad (_("%d warnings, treating warnings as errors"), had_warnings ()); | |
2bdd6cf5 | 939 | |
252b5132 RH |
940 | if (had_errors () > 0 && ! flag_always_generate_output) |
941 | keep_it = 0; | |
942 | ||
943 | if (!keep_it) | |
944 | unlink (out_file_name); | |
945 | ||
946 | input_scrub_end (); | |
947 | ||
948 | END_PROGRESS (myname); | |
949 | ||
950 | /* Use xexit instead of return, because under VMS environments they | |
951 | may not place the same interpretation on the value given. */ | |
952 | if (had_errors () > 0) | |
953 | xexit (EXIT_FAILURE); | |
954 | ||
955 | /* Only generate dependency file if assembler was successful. */ | |
956 | print_dependencies (); | |
957 | ||
958 | xexit (EXIT_SUCCESS); | |
959 | } | |
960 | ||
961 | static void | |
962 | dump_statistics () | |
963 | { | |
964 | #ifdef HAVE_SBRK | |
965 | char *lim = (char *) sbrk (0); | |
966 | #endif | |
967 | long run_time = get_run_time () - start_time; | |
968 | ||
969 | fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"), | |
970 | myname, run_time / 1000000, run_time % 1000000); | |
971 | #ifdef HAVE_SBRK | |
972 | fprintf (stderr, _("%s: data size %ld\n"), | |
973 | myname, (long) (lim - (char *) &environ)); | |
974 | #endif | |
975 | ||
976 | subsegs_print_statistics (stderr); | |
977 | write_print_statistics (stderr); | |
978 | symbol_print_statistics (stderr); | |
979 | read_print_statistics (stderr); | |
980 | ||
981 | #ifdef tc_print_statistics | |
982 | tc_print_statistics (stderr); | |
983 | #endif | |
984 | #ifdef obj_print_statistics | |
985 | obj_print_statistics (stderr); | |
986 | #endif | |
987 | } | |
988 | \f | |
76b0a8c0 KH |
989 | /* Here to attempt 1 pass over each input file. |
990 | We scan argv[*] looking for filenames or exactly "" which is | |
991 | shorthand for stdin. Any argv that is NULL is not a file-name. | |
992 | We set need_pass_2 TRUE if, after this, we still have unresolved | |
993 | expressions of the form (unknown value)+-(unknown value). | |
252b5132 | 994 | |
76b0a8c0 KH |
995 | Note the un*x semantics: there is only 1 logical input file, but it |
996 | may be a catenation of many 'physical' input files. */ | |
997 | ||
998 | static void | |
252b5132 RH |
999 | perform_an_assembly_pass (argc, argv) |
1000 | int argc; | |
1001 | char **argv; | |
1002 | { | |
1003 | int saw_a_file = 0; | |
1004 | #ifdef BFD_ASSEMBLER | |
1005 | flagword applicable; | |
1006 | #endif | |
1007 | ||
1008 | need_pass_2 = 0; | |
1009 | ||
1010 | #ifndef BFD_ASSEMBLER | |
1011 | #ifdef MANY_SEGMENTS | |
1012 | { | |
1013 | unsigned int i; | |
1014 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
1015 | segment_info[i].fix_root = 0; | |
1016 | } | |
76b0a8c0 | 1017 | /* Create the three fixed ones. */ |
252b5132 RH |
1018 | { |
1019 | segT seg; | |
1020 | ||
1021 | #ifdef TE_APOLLO | |
1022 | seg = subseg_new (".wtext", 0); | |
1023 | #else | |
1024 | seg = subseg_new (".text", 0); | |
1025 | #endif | |
1026 | assert (seg == SEG_E0); | |
1027 | seg = subseg_new (".data", 0); | |
1028 | assert (seg == SEG_E1); | |
1029 | seg = subseg_new (".bss", 0); | |
1030 | assert (seg == SEG_E2); | |
1031 | #ifdef TE_APOLLO | |
1032 | create_target_segments (); | |
1033 | #endif | |
1034 | } | |
1035 | ||
1036 | #else /* not MANY_SEGMENTS */ | |
1037 | text_fix_root = NULL; | |
1038 | data_fix_root = NULL; | |
1039 | bss_fix_root = NULL; | |
1040 | #endif /* not MANY_SEGMENTS */ | |
1041 | #else /* BFD_ASSEMBLER */ | |
1042 | /* Create the standard sections, and those the assembler uses | |
1043 | internally. */ | |
1044 | text_section = subseg_new (TEXT_SECTION_NAME, 0); | |
1045 | data_section = subseg_new (DATA_SECTION_NAME, 0); | |
1046 | bss_section = subseg_new (BSS_SECTION_NAME, 0); | |
1047 | /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed | |
76b0a8c0 | 1048 | to have relocs, otherwise we don't find out in time. */ |
252b5132 RH |
1049 | applicable = bfd_applicable_section_flags (stdoutput); |
1050 | bfd_set_section_flags (stdoutput, text_section, | |
1051 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
1052 | | SEC_CODE | SEC_READONLY)); | |
252b5132 | 1053 | bfd_set_section_flags (stdoutput, data_section, |
a33132fd ILT |
1054 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC |
1055 | | SEC_DATA)); | |
252b5132 RH |
1056 | bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC); |
1057 | seg_info (bss_section)->bss = 1; | |
1058 | subseg_new (BFD_ABS_SECTION_NAME, 0); | |
1059 | subseg_new (BFD_UND_SECTION_NAME, 0); | |
1060 | reg_section = subseg_new ("*GAS `reg' section*", 0); | |
1061 | expr_section = subseg_new ("*GAS `expr' section*", 0); | |
1062 | ||
1063 | #endif /* BFD_ASSEMBLER */ | |
1064 | ||
1065 | subseg_set (text_section, 0); | |
1066 | ||
1067 | /* This may add symbol table entries, which requires having an open BFD, | |
1068 | and sections already created, in BFD_ASSEMBLER mode. */ | |
1069 | md_begin (); | |
1070 | ||
9cc92a36 NC |
1071 | #ifdef USING_CGEN |
1072 | gas_cgen_begin (); | |
1073 | #endif | |
252b5132 RH |
1074 | #ifdef obj_begin |
1075 | obj_begin (); | |
1076 | #endif | |
1077 | ||
76b0a8c0 KH |
1078 | /* Skip argv[0]. */ |
1079 | argv++; | |
1080 | argc--; | |
1081 | ||
252b5132 RH |
1082 | while (argc--) |
1083 | { | |
1084 | if (*argv) | |
76b0a8c0 | 1085 | { /* Is it a file-name argument? */ |
252b5132 RH |
1086 | PROGRESS (1); |
1087 | saw_a_file++; | |
76b0a8c0 | 1088 | /* argv->"" if stdin desired, else->filename */ |
252b5132 RH |
1089 | read_a_source_file (*argv); |
1090 | } | |
76b0a8c0 | 1091 | argv++; /* completed that argv */ |
252b5132 RH |
1092 | } |
1093 | if (!saw_a_file) | |
1094 | read_a_source_file (""); | |
76b0a8c0 | 1095 | } |
252b5132 RH |
1096 | |
1097 | /* The interface between the macro code and gas expression handling. */ | |
1098 | ||
1099 | static int | |
1100 | macro_expr (emsg, idx, in, val) | |
1101 | const char *emsg; | |
1102 | int idx; | |
1103 | sb *in; | |
1104 | int *val; | |
1105 | { | |
1106 | char *hold; | |
1107 | expressionS ex; | |
1108 | ||
1109 | sb_terminate (in); | |
1110 | ||
1111 | hold = input_line_pointer; | |
1112 | input_line_pointer = in->ptr + idx; | |
1113 | expression (&ex); | |
1114 | idx = input_line_pointer - in->ptr; | |
1115 | input_line_pointer = hold; | |
1116 | ||
1117 | if (ex.X_op != O_constant) | |
1118 | as_bad ("%s", emsg); | |
1119 | ||
1120 | *val = (int) ex.X_add_number; | |
1121 | ||
1122 | return idx; | |
1123 | } |