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" |
54cfded0 | 45 | #include "dw2gencfi.h" |
252b5132 | 46 | |
b95d15c6 AM |
47 | #ifdef BFD_ASSEMBLER |
48 | #include "bfdver.h" | |
49 | #endif | |
50 | ||
84be4d71 ILT |
51 | #ifdef HAVE_ITBL_CPU |
52 | #include "itbl-ops.h" | |
53 | #else | |
252b5132 RH |
54 | #define itbl_parse(itbl_file) 1 |
55 | #define itbl_init() | |
56 | #endif | |
57 | ||
58 | #ifdef HAVE_SBRK | |
59 | #ifdef NEED_DECLARATION_SBRK | |
60 | extern PTR sbrk (); | |
61 | #endif | |
62 | #endif | |
63 | ||
64 | static void show_usage PARAMS ((FILE *)); | |
65 | static void parse_args PARAMS ((int *, char ***)); | |
66 | static void dump_statistics PARAMS ((void)); | |
67 | static void perform_an_assembly_pass PARAMS ((int argc, char **argv)); | |
68 | static int macro_expr PARAMS ((const char *, int, sb *, int *)); | |
9cc92a36 NC |
69 | #ifdef USING_CGEN |
70 | /* Perform any cgen specific initialisation for gas. */ | |
71 | extern void gas_cgen_begin PARAMS ((void)); | |
72 | #endif | |
252b5132 | 73 | |
76b0a8c0 KH |
74 | /* True if a listing is wanted. */ |
75 | int listing; | |
252b5132 | 76 | |
76b0a8c0 KH |
77 | /* Name of listing file. */ |
78 | static char *listing_filename = NULL; | |
252b5132 RH |
79 | |
80 | /* Type of debugging to generate. */ | |
81 | ||
4dc7ead9 | 82 | enum debug_info_type debug_type = DEBUG_UNSPECIFIED; |
252b5132 RH |
83 | |
84 | /* Maximum level of macro nesting. */ | |
252b5132 RH |
85 | int max_macro_nest = 100; |
86 | ||
76b0a8c0 KH |
87 | /* argv[0] */ |
88 | char *myname; | |
252b5132 RH |
89 | #ifdef BFD_ASSEMBLER |
90 | segT reg_section, expr_section; | |
91 | segT text_section, data_section, bss_section; | |
92 | #endif | |
93 | ||
94 | /* The default obstack chunk size. If we set this to zero, the | |
95 | obstack code will use whatever will fit in a 4096 byte block. */ | |
96 | int chunksize = 0; | |
97 | ||
98 | /* To monitor memory allocation more effectively, make this non-zero. | |
99 | Then the chunk sizes for gas and bfd will be reduced. */ | |
100 | int debug_memory = 0; | |
101 | ||
54cfded0 AM |
102 | /* Enable verbose mode. */ |
103 | int verbose = 0; | |
104 | ||
252b5132 RH |
105 | /* We build a list of defsyms as we read the options, and then define |
106 | them after we have initialized everything. */ | |
107 | ||
30a2b4ef | 108 | struct defsym_list { |
252b5132 RH |
109 | struct defsym_list *next; |
110 | char *name; | |
111 | valueT value; | |
112 | }; | |
113 | ||
114 | static struct defsym_list *defsyms; | |
115 | ||
76b0a8c0 | 116 | /* Keep a record of the itbl files we read in. */ |
252b5132 | 117 | |
30a2b4ef | 118 | struct itbl_file_list { |
252b5132 RH |
119 | struct itbl_file_list *next; |
120 | char *name; | |
121 | }; | |
122 | ||
123 | static struct itbl_file_list *itbl_files; | |
124 | \f | |
252b5132 RH |
125 | #ifdef USE_EMULATIONS |
126 | #define EMULATION_ENVIRON "AS_EMULATION" | |
127 | ||
128 | extern struct emulation mipsbelf, mipslelf, mipself; | |
129 | extern struct emulation mipsbecoff, mipslecoff, mipsecoff; | |
4c63da97 | 130 | extern struct emulation i386coff, i386elf, i386aout; |
3bcbcc3d | 131 | extern struct emulation crisaout, criself; |
252b5132 RH |
132 | |
133 | static struct emulation *const emulations[] = { EMULATIONS }; | |
134 | static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]); | |
135 | ||
136 | static void select_emulation_mode PARAMS ((int, char **)); | |
137 | ||
138 | static void | |
139 | select_emulation_mode (argc, argv) | |
140 | int argc; | |
141 | char **argv; | |
142 | { | |
143 | int i; | |
144 | char *p, *em = 0; | |
145 | ||
146 | for (i = 1; i < argc; i++) | |
147 | if (!strncmp ("--em", argv[i], 4)) | |
148 | break; | |
149 | ||
150 | if (i == argc) | |
151 | goto do_default; | |
152 | ||
153 | p = strchr (argv[i], '='); | |
154 | if (p) | |
155 | p++; | |
156 | else | |
76b0a8c0 | 157 | p = argv[i + 1]; |
252b5132 RH |
158 | |
159 | if (!p || !*p) | |
160 | as_fatal (_("missing emulation mode name")); | |
161 | em = p; | |
162 | ||
163 | do_default: | |
164 | if (em == 0) | |
165 | em = getenv (EMULATION_ENVIRON); | |
166 | if (em == 0) | |
167 | em = DEFAULT_EMULATION; | |
168 | ||
169 | if (em) | |
170 | { | |
171 | for (i = 0; i < n_emulations; i++) | |
172 | if (!strcmp (emulations[i]->name, em)) | |
173 | break; | |
174 | if (i == n_emulations) | |
175 | as_fatal (_("unrecognized emulation name `%s'"), em); | |
176 | this_emulation = emulations[i]; | |
177 | } | |
178 | else | |
179 | this_emulation = emulations[0]; | |
180 | ||
181 | this_emulation->init (); | |
182 | } | |
183 | ||
184 | const char * | |
185 | default_emul_bfd_name () | |
186 | { | |
187 | abort (); | |
188 | return NULL; | |
189 | } | |
190 | ||
191 | void | |
192 | common_emul_init () | |
193 | { | |
194 | this_format = this_emulation->format; | |
195 | ||
196 | if (this_emulation->leading_underscore == 2) | |
197 | this_emulation->leading_underscore = this_format->dfl_leading_underscore; | |
198 | ||
199 | if (this_emulation->default_endian != 2) | |
200 | target_big_endian = this_emulation->default_endian; | |
201 | ||
202 | if (this_emulation->fake_label_name == 0) | |
203 | { | |
204 | if (this_emulation->leading_underscore) | |
205 | this_emulation->fake_label_name = "L0\001"; | |
206 | else | |
207 | /* What other parameters should we test? */ | |
208 | this_emulation->fake_label_name = ".L0\001"; | |
209 | } | |
210 | } | |
211 | #endif | |
212 | ||
4c63da97 AM |
213 | void |
214 | print_version_id () | |
215 | { | |
216 | static int printed; | |
217 | if (printed) | |
218 | return; | |
219 | printed = 1; | |
220 | ||
221 | #ifdef BFD_ASSEMBLER | |
222 | fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s"), | |
403487ec | 223 | VERSION, TARGET_ALIAS, BFD_VERSION_STRING); |
4c63da97 AM |
224 | #else |
225 | fprintf (stderr, _("GNU assembler version %s (%s)"), VERSION, TARGET_ALIAS); | |
226 | #endif | |
227 | fprintf (stderr, "\n"); | |
228 | } | |
229 | ||
230 | static void | |
231 | show_usage (stream) | |
232 | FILE *stream; | |
233 | { | |
234 | fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname); | |
235 | ||
236 | fprintf (stream, _("\ | |
237 | Options:\n\ | |
238 | -a[sub-option...] turn on listings\n\ | |
239 | Sub-options [default hls]:\n\ | |
240 | c omit false conditionals\n\ | |
241 | d omit debugging directives\n\ | |
242 | h include high-level source\n\ | |
243 | l include assembly\n\ | |
244 | m include macro expansions\n\ | |
245 | n omit forms processing\n\ | |
246 | s include symbols\n\ | |
4c63da97 AM |
247 | =FILE list to FILE (must be last sub-option)\n")); |
248 | ||
249 | fprintf (stream, _("\ | |
250 | -D produce assembler debugging messages\n")); | |
251 | fprintf (stream, _("\ | |
252 | --defsym SYM=VAL define symbol SYM to given value\n")); | |
253 | #ifdef USE_EMULATIONS | |
254 | { | |
255 | int i; | |
256 | char *def_em; | |
257 | ||
258 | fprintf (stream, "\ | |
259 | --em=["); | |
76b0a8c0 | 260 | for (i = 0; i < n_emulations - 1; i++) |
4c63da97 AM |
261 | fprintf (stream, "%s | ", emulations[i]->name); |
262 | fprintf (stream, "%s]\n", emulations[i]->name); | |
263 | ||
264 | def_em = getenv (EMULATION_ENVIRON); | |
76b0a8c0 | 265 | if (!def_em) |
4c63da97 AM |
266 | def_em = DEFAULT_EMULATION; |
267 | fprintf (stream, _("\ | |
268 | emulate output (default %s)\n"), def_em); | |
269 | } | |
270 | #endif | |
271 | fprintf (stream, _("\ | |
272 | -f skip whitespace and comment preprocessing\n")); | |
273 | fprintf (stream, _("\ | |
274 | --gstabs generate stabs debugging information\n")); | |
275 | fprintf (stream, _("\ | |
276 | --gdwarf2 generate DWARF2 debugging information\n")); | |
277 | fprintf (stream, _("\ | |
278 | --help show this message and exit\n")); | |
279 | fprintf (stream, _("\ | |
ea20a7da CC |
280 | --target-help show target specific options\n")); |
281 | fprintf (stream, _("\ | |
4c63da97 AM |
282 | -I DIR add DIR to search list for .include directives\n")); |
283 | fprintf (stream, _("\ | |
284 | -J don't warn about signed overflow\n")); | |
285 | fprintf (stream, _("\ | |
286 | -K warn when differences altered for long displacements\n")); | |
287 | fprintf (stream, _("\ | |
288 | -L,--keep-locals keep local symbols (e.g. starting with `L')\n")); | |
289 | fprintf (stream, _("\ | |
290 | -M,--mri assemble in MRI compatibility mode\n")); | |
291 | fprintf (stream, _("\ | |
292 | --MD FILE write dependency information in FILE (default none)\n")); | |
293 | fprintf (stream, _("\ | |
294 | -nocpp ignored\n")); | |
295 | fprintf (stream, _("\ | |
296 | -o OBJFILE name the object-file output OBJFILE (default a.out)\n")); | |
297 | fprintf (stream, _("\ | |
298 | -R fold data section into text section\n")); | |
299 | fprintf (stream, _("\ | |
300 | --statistics print various measured statistics from execution\n")); | |
301 | fprintf (stream, _("\ | |
302 | --strip-local-absolute strip local absolute symbols\n")); | |
303 | fprintf (stream, _("\ | |
304 | --traditional-format Use same format as native assembler when possible\n")); | |
305 | fprintf (stream, _("\ | |
306 | --version print assembler version number and exit\n")); | |
307 | fprintf (stream, _("\ | |
308 | -W --no-warn suppress warnings\n")); | |
309 | fprintf (stream, _("\ | |
310 | --warn don't suppress warnings\n")); | |
311 | fprintf (stream, _("\ | |
312 | --fatal-warnings treat warnings as errors\n")); | |
313 | fprintf (stream, _("\ | |
314 | --itbl INSTTBL extend instruction set to include instructions\n\ | |
315 | matching the specifications defined in file INSTTBL\n")); | |
316 | fprintf (stream, _("\ | |
317 | -w ignored\n")); | |
318 | fprintf (stream, _("\ | |
319 | -X ignored\n")); | |
320 | fprintf (stream, _("\ | |
321 | -Z generate object file even after errors\n")); | |
322 | fprintf (stream, _("\ | |
323 | --listing-lhs-width set the width in words of the output data column of\n\ | |
324 | the listing\n")); | |
325 | fprintf (stream, _("\ | |
326 | --listing-lhs-width2 set the width in words of the continuation lines\n\ | |
327 | of the output data column; ignored if smaller than\n\ | |
328 | the width of the first line\n")); | |
329 | fprintf (stream, _("\ | |
330 | --listing-rhs-width set the max width in characters of the lines from\n\ | |
331 | the source file\n")); | |
332 | fprintf (stream, _("\ | |
333 | --listing-cont-lines set the maximum number of continuation lines used\n\ | |
334 | for the output data column of the listing\n")); | |
335 | ||
336 | md_show_usage (stream); | |
337 | ||
c20f4f8c | 338 | fputc ('\n', stream); |
8ad3436c | 339 | fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); |
4c63da97 AM |
340 | } |
341 | ||
76b0a8c0 KH |
342 | /* Since it is easy to do here we interpret the special arg "-" |
343 | to mean "use stdin" and we set that argv[] pointing to "". | |
344 | After we have munged argv[], the only things left are source file | |
345 | name(s) and ""(s) denoting stdin. These file names are used | |
346 | (perhaps more than once) later. | |
347 | ||
348 | check for new machine-dep cmdline options in | |
349 | md_parse_option definitions in config/tc-*.c. */ | |
252b5132 RH |
350 | |
351 | static void | |
352 | parse_args (pargc, pargv) | |
353 | int *pargc; | |
354 | char ***pargv; | |
355 | { | |
356 | int old_argc, new_argc; | |
357 | char **old_argv, **new_argv; | |
358 | ||
359 | /* Starting the short option string with '-' is for programs that | |
360 | expect options and other ARGV-elements in any order and that care about | |
361 | the ordering of the two. We describe each non-option ARGV-element | |
362 | as if it were the argument of an option with character code 1. */ | |
363 | ||
364 | char *shortopts; | |
5a38dc70 | 365 | extern const char *md_shortopts; |
30a2b4ef KH |
366 | static const char std_shortopts[] = { |
367 | '-', 'J', | |
252b5132 | 368 | #ifndef WORKING_DOT_WORD |
30a2b4ef KH |
369 | /* -K is not meaningful if .word is not being hacked. */ |
370 | 'K', | |
252b5132 | 371 | #endif |
30a2b4ef | 372 | 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':', |
252b5132 | 373 | #ifndef VMS |
30a2b4ef KH |
374 | /* -v takes an argument on VMS, so we don't make it a generic |
375 | option. */ | |
376 | 'v', | |
252b5132 | 377 | #endif |
30a2b4ef KH |
378 | 'w', 'X', |
379 | /* New option for extending instruction set (see also --itbl below) */ | |
380 | 't', ':', | |
381 | '\0' | |
382 | }; | |
252b5132 RH |
383 | struct option *longopts; |
384 | extern struct option md_longopts[]; | |
385 | extern size_t md_longopts_size; | |
386 | static const struct option std_longopts[] = { | |
387 | #define OPTION_HELP (OPTION_STD_BASE) | |
388 | {"help", no_argument, NULL, OPTION_HELP}, | |
9c3b31c6 NC |
389 | /* getopt allows abbreviations, so we do this to stop it from |
390 | treating -k as an abbreviation for --keep-locals. Some | |
391 | ports use -k to enable PIC assembly. */ | |
392 | {"keep-locals", no_argument, NULL, 'L'}, | |
252b5132 RH |
393 | {"keep-locals", no_argument, NULL, 'L'}, |
394 | {"mri", no_argument, NULL, 'M'}, | |
395 | #define OPTION_NOCPP (OPTION_STD_BASE + 1) | |
396 | {"nocpp", no_argument, NULL, OPTION_NOCPP}, | |
397 | #define OPTION_STATISTICS (OPTION_STD_BASE + 2) | |
398 | {"statistics", no_argument, NULL, OPTION_STATISTICS}, | |
399 | #define OPTION_VERSION (OPTION_STD_BASE + 3) | |
400 | {"version", no_argument, NULL, OPTION_VERSION}, | |
401 | #define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4) | |
402 | {"dump-config", no_argument, NULL, OPTION_DUMPCONFIG}, | |
403 | #define OPTION_VERBOSE (OPTION_STD_BASE + 5) | |
404 | {"verbose", no_argument, NULL, OPTION_VERBOSE}, | |
405 | #define OPTION_EMULATION (OPTION_STD_BASE + 6) | |
406 | {"emulation", required_argument, NULL, OPTION_EMULATION}, | |
407 | #define OPTION_DEFSYM (OPTION_STD_BASE + 7) | |
408 | {"defsym", required_argument, NULL, OPTION_DEFSYM}, | |
409 | #define OPTION_INSTTBL (OPTION_STD_BASE + 8) | |
410 | /* New option for extending instruction set (see also -t above). | |
411 | The "-t file" or "--itbl file" option extends the basic set of | |
412 | valid instructions by reading "file", a text file containing a | |
413 | list of instruction formats. The additional opcodes and their | |
414 | formats are added to the built-in set of instructions, and | |
415 | mnemonics for new registers may also be defined. */ | |
416 | {"itbl", required_argument, NULL, OPTION_INSTTBL}, | |
417 | #define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9) | |
418 | {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH}, | |
419 | #define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10) | |
3c5cdb54 | 420 | {"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2}, |
252b5132 RH |
421 | #define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11) |
422 | {"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH}, | |
423 | #define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12) | |
424 | {"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES}, | |
425 | #define OPTION_DEPFILE (OPTION_STD_BASE + 13) | |
426 | {"MD", required_argument, NULL, OPTION_DEPFILE}, | |
427 | #define OPTION_GSTABS (OPTION_STD_BASE + 14) | |
428 | {"gstabs", no_argument, NULL, OPTION_GSTABS}, | |
429 | #define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15) | |
430 | {"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE}, | |
431 | #define OPTION_TRADITIONAL_FORMAT (OPTION_STD_BASE + 16) | |
fac0d250 RH |
432 | {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, |
433 | #define OPTION_GDWARF2 (OPTION_STD_BASE + 17) | |
2bdd6cf5 GK |
434 | {"gdwarf2", no_argument, NULL, OPTION_GDWARF2}, |
435 | {"no-warn", no_argument, NULL, 'W'}, | |
436 | #define OPTION_WARN (OPTION_STD_BASE + 18) | |
437 | {"warn", no_argument, NULL, OPTION_WARN}, | |
ea20a7da CC |
438 | #define OPTION_TARGET_HELP (OPTION_STD_BASE + 19) |
439 | {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, | |
440 | #define OPTION_WARN_FATAL (OPTION_STD_BASE + 20) | |
2bdd6cf5 | 441 | {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL} |
d8374dcd HPN |
442 | /* When you add options here, check that they do not collide with |
443 | OPTION_MD_BASE. See as.h. */ | |
252b5132 RH |
444 | }; |
445 | ||
beb2de9b AC |
446 | /* Construct the option lists from the standard list and the target |
447 | dependent list. Include space for an extra NULL option and | |
76b0a8c0 | 448 | always NULL terminate. */ |
252b5132 | 449 | shortopts = concat (std_shortopts, md_shortopts, (char *) NULL); |
beb2de9b AC |
450 | longopts = (struct option *) xmalloc (sizeof (std_longopts) |
451 | + md_longopts_size | |
452 | + sizeof (struct option)); | |
252b5132 RH |
453 | memcpy (longopts, std_longopts, sizeof (std_longopts)); |
454 | memcpy ((char *) longopts + sizeof (std_longopts), | |
455 | md_longopts, md_longopts_size); | |
beb2de9b AC |
456 | memset ((char *) longopts + sizeof (std_longopts) + md_longopts_size, |
457 | 0, sizeof (struct option)); | |
252b5132 RH |
458 | |
459 | /* Make a local copy of the old argv. */ | |
460 | old_argc = *pargc; | |
461 | old_argv = *pargv; | |
462 | ||
463 | /* Initialize a new argv that contains no options. */ | |
464 | new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1)); | |
465 | new_argv[0] = old_argv[0]; | |
466 | new_argc = 1; | |
467 | new_argv[new_argc] = NULL; | |
468 | ||
469 | while (1) | |
470 | { | |
471 | /* getopt_long_only is like getopt_long, but '-' as well as '--' can | |
472 | indicate a long option. */ | |
473 | int longind; | |
474 | int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts, | |
475 | &longind); | |
476 | ||
477 | if (optc == -1) | |
478 | break; | |
479 | ||
480 | switch (optc) | |
481 | { | |
482 | default: | |
483 | /* md_parse_option should return 1 if it recognizes optc, | |
484 | 0 if not. */ | |
485 | if (md_parse_option (optc, optarg) != 0) | |
486 | break; | |
487 | /* `-v' isn't included in the general short_opts list, so check for | |
488 | it explicity here before deciding we've gotten a bad argument. */ | |
489 | if (optc == 'v') | |
490 | { | |
491 | #ifdef VMS | |
492 | /* Telling getopt to treat -v's value as optional can result | |
493 | in it picking up a following filename argument here. The | |
494 | VMS code in md_parse_option can return 0 in that case, | |
495 | but it has no way of pushing the filename argument back. */ | |
496 | if (optarg && *optarg) | |
30a2b4ef | 497 | new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL; |
252b5132 RH |
498 | else |
499 | #else | |
500 | case 'v': | |
501 | #endif | |
502 | case OPTION_VERBOSE: | |
503 | print_version_id (); | |
54cfded0 | 504 | verbose = 1; |
252b5132 RH |
505 | break; |
506 | } | |
76b0a8c0 | 507 | /* Fall through. */ |
252b5132 RH |
508 | |
509 | case '?': | |
510 | exit (EXIT_FAILURE); | |
511 | ||
512 | case 1: /* File name. */ | |
513 | if (!strcmp (optarg, "-")) | |
514 | optarg = ""; | |
515 | new_argv[new_argc++] = optarg; | |
516 | new_argv[new_argc] = NULL; | |
517 | break; | |
ef99799a | 518 | |
ea20a7da | 519 | case OPTION_TARGET_HELP: |
411863a4 KH |
520 | md_show_usage (stdout); |
521 | exit (EXIT_SUCCESS); | |
252b5132 RH |
522 | |
523 | case OPTION_HELP: | |
524 | show_usage (stdout); | |
525 | exit (EXIT_SUCCESS); | |
526 | ||
527 | case OPTION_NOCPP: | |
528 | break; | |
529 | ||
530 | case OPTION_STATISTICS: | |
531 | flag_print_statistics = 1; | |
532 | break; | |
533 | ||
534 | case OPTION_STRIP_LOCAL_ABSOLUTE: | |
535 | flag_strip_local_absolute = 1; | |
536 | break; | |
537 | ||
538 | case OPTION_TRADITIONAL_FORMAT: | |
539 | flag_traditional_format = 1; | |
540 | break; | |
541 | ||
542 | case OPTION_VERSION: | |
543 | /* This output is intended to follow the GNU standards document. */ | |
edde18a5 | 544 | #ifdef BFD_ASSEMBLER |
6c19f338 | 545 | printf (_("GNU assembler %s\n"), BFD_VERSION_STRING); |
edde18a5 AM |
546 | #else |
547 | printf (_("GNU assembler %s\n"), VERSION); | |
548 | #endif | |
2a538ba5 | 549 | printf (_("Copyright 2002 Free Software Foundation, Inc.\n")); |
252b5132 RH |
550 | printf (_("\ |
551 | This program is free software; you may redistribute it under the terms of\n\ | |
552 | the GNU General Public License. This program has absolutely no warranty.\n")); | |
553 | printf (_("This assembler was configured for a target of `%s'.\n"), | |
554 | TARGET_ALIAS); | |
555 | exit (EXIT_SUCCESS); | |
556 | ||
557 | case OPTION_EMULATION: | |
558 | #ifdef USE_EMULATIONS | |
559 | if (strcmp (optarg, this_emulation->name)) | |
560 | as_fatal (_("multiple emulation names specified")); | |
561 | #else | |
562 | as_fatal (_("emulations not handled in this configuration")); | |
563 | #endif | |
564 | break; | |
565 | ||
566 | case OPTION_DUMPCONFIG: | |
567 | fprintf (stderr, _("alias = %s\n"), TARGET_ALIAS); | |
568 | fprintf (stderr, _("canonical = %s\n"), TARGET_CANONICAL); | |
569 | fprintf (stderr, _("cpu-type = %s\n"), TARGET_CPU); | |
570 | #ifdef TARGET_OBJ_FORMAT | |
571 | fprintf (stderr, _("format = %s\n"), TARGET_OBJ_FORMAT); | |
572 | #endif | |
573 | #ifdef TARGET_FORMAT | |
574 | fprintf (stderr, _("bfd-target = %s\n"), TARGET_FORMAT); | |
575 | #endif | |
576 | exit (EXIT_SUCCESS); | |
577 | ||
578 | case OPTION_DEFSYM: | |
579 | { | |
580 | char *s; | |
a38cf1db | 581 | valueT i; |
252b5132 RH |
582 | struct defsym_list *n; |
583 | ||
584 | for (s = optarg; *s != '\0' && *s != '='; s++) | |
585 | ; | |
586 | if (*s == '\0') | |
587 | as_fatal (_("bad defsym; format is --defsym name=value")); | |
588 | *s++ = '\0'; | |
a38cf1db AM |
589 | #ifdef BFD_ASSEMBLER |
590 | i = bfd_scan_vma (s, (const char **) NULL, 0); | |
591 | #else | |
252b5132 | 592 | i = strtol (s, (char **) NULL, 0); |
a38cf1db | 593 | #endif |
252b5132 RH |
594 | n = (struct defsym_list *) xmalloc (sizeof *n); |
595 | n->next = defsyms; | |
596 | n->name = optarg; | |
597 | n->value = i; | |
598 | defsyms = n; | |
599 | } | |
600 | break; | |
601 | ||
602 | case OPTION_INSTTBL: | |
603 | case 't': | |
604 | { | |
76b0a8c0 KH |
605 | /* optarg is the name of the file containing the instruction |
606 | formats, opcodes, register names, etc. */ | |
252b5132 RH |
607 | struct itbl_file_list *n; |
608 | ||
609 | if (optarg == NULL) | |
610 | { | |
0e389e77 | 611 | as_warn (_("no file name following -t option")); |
252b5132 RH |
612 | break; |
613 | } | |
76b0a8c0 | 614 | |
252b5132 RH |
615 | n = (struct itbl_file_list *) xmalloc (sizeof *n); |
616 | n->next = itbl_files; | |
617 | n->name = optarg; | |
618 | itbl_files = n; | |
619 | ||
620 | /* Parse the file and add the new instructions to our internal | |
76b0a8c0 KH |
621 | table. If multiple instruction tables are specified, the |
622 | information from this table gets appended onto the existing | |
623 | internal table. */ | |
252b5132 RH |
624 | itbl_files->name = xstrdup (optarg); |
625 | if (itbl_parse (itbl_files->name) != 0) | |
0e389e77 AM |
626 | as_fatal (_("failed to read instruction table %s\n"), |
627 | itbl_files->name); | |
252b5132 RH |
628 | } |
629 | break; | |
630 | ||
631 | case OPTION_DEPFILE: | |
632 | start_dependencies (optarg); | |
633 | break; | |
634 | ||
635 | case OPTION_GSTABS: | |
636 | debug_type = DEBUG_STABS; | |
637 | break; | |
76b0a8c0 | 638 | |
fac0d250 RH |
639 | case OPTION_GDWARF2: |
640 | debug_type = DEBUG_DWARF2; | |
641 | break; | |
642 | ||
252b5132 RH |
643 | case 'J': |
644 | flag_signed_overflow_ok = 1; | |
645 | break; | |
646 | ||
647 | #ifndef WORKING_DOT_WORD | |
648 | case 'K': | |
649 | flag_warn_displacement = 1; | |
650 | break; | |
651 | #endif | |
652 | ||
653 | case 'L': | |
654 | flag_keep_locals = 1; | |
655 | break; | |
656 | ||
657 | case OPTION_LISTING_LHS_WIDTH: | |
76b0a8c0 | 658 | listing_lhs_width = atoi (optarg); |
252b5132 RH |
659 | if (listing_lhs_width_second < listing_lhs_width) |
660 | listing_lhs_width_second = listing_lhs_width; | |
661 | break; | |
662 | case OPTION_LISTING_LHS_WIDTH2: | |
663 | { | |
76b0a8c0 | 664 | int tmp = atoi (optarg); |
252b5132 RH |
665 | if (tmp > listing_lhs_width) |
666 | listing_lhs_width_second = tmp; | |
667 | } | |
668 | break; | |
669 | case OPTION_LISTING_RHS_WIDTH: | |
76b0a8c0 | 670 | listing_rhs_width = atoi (optarg); |
252b5132 RH |
671 | break; |
672 | case OPTION_LISTING_CONT_LINES: | |
76b0a8c0 | 673 | listing_lhs_cont_lines = atoi (optarg); |
252b5132 RH |
674 | break; |
675 | ||
676 | case 'M': | |
677 | flag_mri = 1; | |
678 | #ifdef TC_M68K | |
679 | flag_m68k_mri = 1; | |
680 | #endif | |
681 | break; | |
682 | ||
683 | case 'R': | |
684 | flag_readonly_data_in_text = 1; | |
685 | break; | |
686 | ||
687 | case 'W': | |
688 | flag_no_warnings = 1; | |
689 | break; | |
690 | ||
2bdd6cf5 GK |
691 | case OPTION_WARN: |
692 | flag_no_warnings = 0; | |
693 | flag_fatal_warnings = 0; | |
694 | break; | |
695 | ||
696 | case OPTION_WARN_FATAL: | |
697 | flag_no_warnings = 0; | |
698 | flag_fatal_warnings = 1; | |
699 | break; | |
700 | ||
252b5132 RH |
701 | case 'Z': |
702 | flag_always_generate_output = 1; | |
703 | break; | |
704 | ||
705 | case 'a': | |
706 | if (optarg) | |
707 | { | |
7f6d05e8 CP |
708 | if (md_parse_option (optc, optarg) != 0) |
709 | break; | |
710 | ||
252b5132 RH |
711 | while (*optarg) |
712 | { | |
713 | switch (*optarg) | |
714 | { | |
715 | case 'c': | |
716 | listing |= LISTING_NOCOND; | |
717 | break; | |
718 | case 'd': | |
719 | listing |= LISTING_NODEBUG; | |
720 | break; | |
721 | case 'h': | |
722 | listing |= LISTING_HLL; | |
723 | break; | |
724 | case 'l': | |
725 | listing |= LISTING_LISTING; | |
726 | break; | |
727 | case 'm': | |
728 | listing |= LISTING_MACEXP; | |
729 | break; | |
730 | case 'n': | |
731 | listing |= LISTING_NOFORM; | |
732 | break; | |
733 | case 's': | |
734 | listing |= LISTING_SYMBOLS; | |
735 | break; | |
736 | case '=': | |
737 | listing_filename = xstrdup (optarg + 1); | |
738 | optarg += strlen (listing_filename); | |
739 | break; | |
740 | default: | |
741 | as_fatal (_("invalid listing option `%c'"), *optarg); | |
742 | break; | |
743 | } | |
744 | optarg++; | |
745 | } | |
746 | } | |
747 | if (!listing) | |
748 | listing = LISTING_DEFAULT; | |
749 | break; | |
750 | ||
751 | case 'D': | |
76b0a8c0 KH |
752 | /* DEBUG is implemented: it debugs different |
753 | things from other people's assemblers. */ | |
252b5132 RH |
754 | flag_debug = 1; |
755 | break; | |
756 | ||
757 | case 'f': | |
758 | flag_no_comments = 1; | |
759 | break; | |
760 | ||
761 | case 'I': | |
76b0a8c0 | 762 | { /* Include file directory. */ |
252b5132 RH |
763 | char *temp = xstrdup (optarg); |
764 | add_include_dir (temp); | |
765 | break; | |
766 | } | |
767 | ||
768 | case 'o': | |
769 | out_file_name = xstrdup (optarg); | |
770 | break; | |
771 | ||
772 | case 'w': | |
773 | break; | |
774 | ||
775 | case 'X': | |
76b0a8c0 | 776 | /* -X means treat warnings as errors. */ |
252b5132 RH |
777 | break; |
778 | } | |
779 | } | |
780 | ||
781 | free (shortopts); | |
782 | free (longopts); | |
783 | ||
784 | *pargc = new_argc; | |
785 | *pargv = new_argv; | |
acebd4ce AS |
786 | |
787 | #ifdef md_after_parse_args | |
788 | md_after_parse_args (); | |
789 | #endif | |
252b5132 RH |
790 | } |
791 | ||
792 | static long start_time; | |
793 | ||
a80076a1 NC |
794 | int main PARAMS ((int, char **)); |
795 | ||
76b0a8c0 | 796 | int |
252b5132 RH |
797 | main (argc, argv) |
798 | int argc; | |
799 | char **argv; | |
800 | { | |
801 | int macro_alternate; | |
802 | int macro_strip_at; | |
803 | int keep_it; | |
804 | ||
805 | start_time = get_run_time (); | |
806 | ||
807 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
808 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
809 | #endif |
810 | #if defined (HAVE_SETLOCALE) | |
811 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
812 | #endif |
813 | bindtextdomain (PACKAGE, LOCALEDIR); | |
814 | textdomain (PACKAGE); | |
815 | ||
816 | if (debug_memory) | |
091e58c1 | 817 | chunksize = 64; |
252b5132 RH |
818 | |
819 | #ifdef HOST_SPECIAL_INIT | |
820 | HOST_SPECIAL_INIT (argc, argv); | |
821 | #endif | |
822 | ||
823 | myname = argv[0]; | |
824 | xmalloc_set_program_name (myname); | |
825 | ||
826 | START_PROGRESS (myname, 0); | |
827 | ||
828 | #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME | |
829 | #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out" | |
830 | #endif | |
831 | ||
832 | out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME; | |
833 | ||
834 | hex_init (); | |
835 | #ifdef BFD_ASSEMBLER | |
836 | bfd_init (); | |
837 | bfd_set_error_program_name (myname); | |
838 | #endif | |
839 | ||
840 | #ifdef USE_EMULATIONS | |
841 | select_emulation_mode (argc, argv); | |
842 | #endif | |
843 | ||
844 | PROGRESS (1); | |
845 | symbol_begin (); | |
846 | frag_init (); | |
847 | subsegs_begin (); | |
76b0a8c0 | 848 | parse_args (&argc, &argv); |
252b5132 RH |
849 | read_begin (); |
850 | input_scrub_begin (); | |
851 | expr_begin (); | |
852 | ||
853 | if (flag_print_statistics) | |
854 | xatexit (dump_statistics); | |
855 | ||
856 | macro_alternate = 0; | |
857 | macro_strip_at = 0; | |
858 | #ifdef TC_I960 | |
859 | macro_strip_at = flag_mri; | |
860 | #endif | |
861 | #ifdef TC_A29K | |
862 | /* For compatibility with the AMD 29K family macro assembler | |
863 | specification. */ | |
864 | macro_alternate = 1; | |
865 | macro_strip_at = 1; | |
866 | #endif | |
867 | ||
868 | macro_init (macro_alternate, flag_mri, macro_strip_at, macro_expr); | |
869 | ||
870 | PROGRESS (1); | |
871 | ||
872 | #ifdef BFD_ASSEMBLER | |
873 | output_file_create (out_file_name); | |
874 | assert (stdoutput != 0); | |
875 | #endif | |
876 | ||
877 | #ifdef tc_init_after_args | |
878 | tc_init_after_args (); | |
879 | #endif | |
880 | ||
881 | itbl_init (); | |
882 | ||
883 | /* Now that we have fully initialized, and have created the output | |
884 | file, define any symbols requested by --defsym command line | |
885 | arguments. */ | |
886 | while (defsyms != NULL) | |
887 | { | |
888 | symbolS *sym; | |
889 | struct defsym_list *next; | |
890 | ||
891 | sym = symbol_new (defsyms->name, absolute_section, defsyms->value, | |
892 | &zero_address_frag); | |
893 | symbol_table_insert (sym); | |
894 | next = defsyms->next; | |
895 | free (defsyms); | |
896 | defsyms = next; | |
897 | } | |
898 | ||
899 | PROGRESS (1); | |
900 | ||
76b0a8c0 KH |
901 | /* Assemble it. */ |
902 | perform_an_assembly_pass (argc, argv); | |
252b5132 RH |
903 | |
904 | cond_finish_check (-1); | |
905 | ||
906 | #ifdef md_end | |
907 | md_end (); | |
908 | #endif | |
909 | ||
43ad3147 | 910 | /* If we've been collecting dwarf2 .debug_line info, either for |
39bb5fe6 RH |
911 | assembly debugging or on behalf of the compiler, emit it now. */ |
912 | dwarf2_finish (); | |
913 | ||
54cfded0 AM |
914 | #ifdef TARGET_USE_CFIPOP |
915 | cfi_finish (); | |
916 | #endif | |
917 | ||
252b5132 RH |
918 | if (seen_at_least_1_file () |
919 | && (flag_always_generate_output || had_errors () == 0)) | |
920 | keep_it = 1; | |
921 | else | |
922 | keep_it = 0; | |
923 | ||
924 | #if defined (BFD_ASSEMBLER) || !defined (BFD) | |
925 | /* This used to be done at the start of write_object_file in | |
926 | write.c, but that caused problems when doing listings when | |
927 | keep_it was zero. This could probably be moved above md_end, but | |
928 | I didn't want to risk the change. */ | |
929 | subsegs_finish (); | |
930 | #endif | |
931 | ||
932 | if (keep_it) | |
933 | write_object_file (); | |
934 | ||
935 | #ifndef NO_LISTING | |
936 | listing_print (listing_filename); | |
937 | #endif | |
938 | ||
939 | #ifndef OBJ_VMS /* does its own file handling */ | |
940 | #ifndef BFD_ASSEMBLER | |
941 | if (keep_it) | |
942 | #endif | |
943 | output_file_close (out_file_name); | |
944 | #endif | |
945 | ||
76b0a8c0 KH |
946 | if (flag_fatal_warnings && had_warnings () > 0 && had_errors () == 0) |
947 | as_bad (_("%d warnings, treating warnings as errors"), had_warnings ()); | |
2bdd6cf5 | 948 | |
252b5132 RH |
949 | if (had_errors () > 0 && ! flag_always_generate_output) |
950 | keep_it = 0; | |
951 | ||
952 | if (!keep_it) | |
953 | unlink (out_file_name); | |
954 | ||
955 | input_scrub_end (); | |
956 | ||
957 | END_PROGRESS (myname); | |
958 | ||
959 | /* Use xexit instead of return, because under VMS environments they | |
960 | may not place the same interpretation on the value given. */ | |
961 | if (had_errors () > 0) | |
962 | xexit (EXIT_FAILURE); | |
963 | ||
964 | /* Only generate dependency file if assembler was successful. */ | |
965 | print_dependencies (); | |
966 | ||
967 | xexit (EXIT_SUCCESS); | |
968 | } | |
969 | ||
970 | static void | |
971 | dump_statistics () | |
972 | { | |
973 | #ifdef HAVE_SBRK | |
974 | char *lim = (char *) sbrk (0); | |
975 | #endif | |
976 | long run_time = get_run_time () - start_time; | |
977 | ||
978 | fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"), | |
979 | myname, run_time / 1000000, run_time % 1000000); | |
980 | #ifdef HAVE_SBRK | |
981 | fprintf (stderr, _("%s: data size %ld\n"), | |
982 | myname, (long) (lim - (char *) &environ)); | |
983 | #endif | |
984 | ||
985 | subsegs_print_statistics (stderr); | |
986 | write_print_statistics (stderr); | |
987 | symbol_print_statistics (stderr); | |
988 | read_print_statistics (stderr); | |
989 | ||
990 | #ifdef tc_print_statistics | |
991 | tc_print_statistics (stderr); | |
992 | #endif | |
993 | #ifdef obj_print_statistics | |
994 | obj_print_statistics (stderr); | |
995 | #endif | |
996 | } | |
997 | \f | |
76b0a8c0 KH |
998 | /* Here to attempt 1 pass over each input file. |
999 | We scan argv[*] looking for filenames or exactly "" which is | |
1000 | shorthand for stdin. Any argv that is NULL is not a file-name. | |
1001 | We set need_pass_2 TRUE if, after this, we still have unresolved | |
1002 | expressions of the form (unknown value)+-(unknown value). | |
252b5132 | 1003 | |
76b0a8c0 KH |
1004 | Note the un*x semantics: there is only 1 logical input file, but it |
1005 | may be a catenation of many 'physical' input files. */ | |
1006 | ||
1007 | static void | |
252b5132 RH |
1008 | perform_an_assembly_pass (argc, argv) |
1009 | int argc; | |
1010 | char **argv; | |
1011 | { | |
1012 | int saw_a_file = 0; | |
1013 | #ifdef BFD_ASSEMBLER | |
1014 | flagword applicable; | |
1015 | #endif | |
1016 | ||
1017 | need_pass_2 = 0; | |
1018 | ||
1019 | #ifndef BFD_ASSEMBLER | |
1020 | #ifdef MANY_SEGMENTS | |
1021 | { | |
1022 | unsigned int i; | |
1023 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
1024 | segment_info[i].fix_root = 0; | |
1025 | } | |
76b0a8c0 | 1026 | /* Create the three fixed ones. */ |
252b5132 RH |
1027 | { |
1028 | segT seg; | |
1029 | ||
1030 | #ifdef TE_APOLLO | |
1031 | seg = subseg_new (".wtext", 0); | |
1032 | #else | |
1033 | seg = subseg_new (".text", 0); | |
1034 | #endif | |
1035 | assert (seg == SEG_E0); | |
1036 | seg = subseg_new (".data", 0); | |
1037 | assert (seg == SEG_E1); | |
1038 | seg = subseg_new (".bss", 0); | |
1039 | assert (seg == SEG_E2); | |
1040 | #ifdef TE_APOLLO | |
1041 | create_target_segments (); | |
1042 | #endif | |
1043 | } | |
1044 | ||
1045 | #else /* not MANY_SEGMENTS */ | |
1046 | text_fix_root = NULL; | |
1047 | data_fix_root = NULL; | |
1048 | bss_fix_root = NULL; | |
1049 | #endif /* not MANY_SEGMENTS */ | |
1050 | #else /* BFD_ASSEMBLER */ | |
1051 | /* Create the standard sections, and those the assembler uses | |
1052 | internally. */ | |
1053 | text_section = subseg_new (TEXT_SECTION_NAME, 0); | |
1054 | data_section = subseg_new (DATA_SECTION_NAME, 0); | |
1055 | bss_section = subseg_new (BSS_SECTION_NAME, 0); | |
1056 | /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed | |
76b0a8c0 | 1057 | to have relocs, otherwise we don't find out in time. */ |
252b5132 RH |
1058 | applicable = bfd_applicable_section_flags (stdoutput); |
1059 | bfd_set_section_flags (stdoutput, text_section, | |
1060 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
1061 | | SEC_CODE | SEC_READONLY)); | |
252b5132 | 1062 | bfd_set_section_flags (stdoutput, data_section, |
a33132fd ILT |
1063 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC |
1064 | | SEC_DATA)); | |
252b5132 RH |
1065 | bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC); |
1066 | seg_info (bss_section)->bss = 1; | |
1067 | subseg_new (BFD_ABS_SECTION_NAME, 0); | |
1068 | subseg_new (BFD_UND_SECTION_NAME, 0); | |
1069 | reg_section = subseg_new ("*GAS `reg' section*", 0); | |
1070 | expr_section = subseg_new ("*GAS `expr' section*", 0); | |
1071 | ||
1072 | #endif /* BFD_ASSEMBLER */ | |
1073 | ||
1074 | subseg_set (text_section, 0); | |
1075 | ||
1076 | /* This may add symbol table entries, which requires having an open BFD, | |
1077 | and sections already created, in BFD_ASSEMBLER mode. */ | |
1078 | md_begin (); | |
1079 | ||
9cc92a36 NC |
1080 | #ifdef USING_CGEN |
1081 | gas_cgen_begin (); | |
1082 | #endif | |
252b5132 RH |
1083 | #ifdef obj_begin |
1084 | obj_begin (); | |
1085 | #endif | |
1086 | ||
76b0a8c0 KH |
1087 | /* Skip argv[0]. */ |
1088 | argv++; | |
1089 | argc--; | |
1090 | ||
252b5132 RH |
1091 | while (argc--) |
1092 | { | |
1093 | if (*argv) | |
76b0a8c0 | 1094 | { /* Is it a file-name argument? */ |
252b5132 RH |
1095 | PROGRESS (1); |
1096 | saw_a_file++; | |
76b0a8c0 | 1097 | /* argv->"" if stdin desired, else->filename */ |
252b5132 RH |
1098 | read_a_source_file (*argv); |
1099 | } | |
76b0a8c0 | 1100 | argv++; /* completed that argv */ |
252b5132 RH |
1101 | } |
1102 | if (!saw_a_file) | |
1103 | read_a_source_file (""); | |
76b0a8c0 | 1104 | } |
252b5132 RH |
1105 | |
1106 | /* The interface between the macro code and gas expression handling. */ | |
1107 | ||
1108 | static int | |
1109 | macro_expr (emsg, idx, in, val) | |
1110 | const char *emsg; | |
1111 | int idx; | |
1112 | sb *in; | |
1113 | int *val; | |
1114 | { | |
1115 | char *hold; | |
1116 | expressionS ex; | |
1117 | ||
1118 | sb_terminate (in); | |
1119 | ||
1120 | hold = input_line_pointer; | |
1121 | input_line_pointer = in->ptr + idx; | |
1122 | expression (&ex); | |
1123 | idx = input_line_pointer - in->ptr; | |
1124 | input_line_pointer = hold; | |
1125 | ||
1126 | if (ex.X_op != O_constant) | |
1127 | as_bad ("%s", emsg); | |
1128 | ||
1129 | *val = (int) ex.X_add_number; | |
1130 | ||
1131 | return idx; | |
1132 | } |