Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* as.c - GAS main program. |
efec4a28 | 2 | Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 1997 |
c7a89bde | 3 | Free Software Foundation, Inc. |
6efd877d | 4 | |
a39116f1 | 5 | This file is part of GAS, the GNU Assembler. |
6efd877d | 6 | |
a39116f1 RP |
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) | |
10 | any later version. | |
6efd877d | 11 | |
a39116f1 RP |
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. | |
6efd877d | 16 | |
a39116f1 | 17 | You should have received a copy of the GNU General Public License |
bfc94743 ILT |
18 | along with GAS; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
fecd2382 RP |
21 | |
22 | /* | |
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 | |
26 | * are shared. | |
27 | * | |
28 | * | |
29 | * bugs | |
30 | * | |
31 | * : initialisers | |
32 | * Since no-one else says they will support them in future: I | |
33 | * don't support them now. | |
34 | * | |
35 | */ | |
36 | ||
ebd6f117 | 37 | #include "ansidecl.h" |
ebd6f117 | 38 | |
fecd2382 RP |
39 | #define COMMON |
40 | ||
41 | #include "as.h" | |
5d9f0ecf | 42 | #include "subsegs.h" |
6aba9d29 | 43 | #include "output-file.h" |
7e047ac2 ILT |
44 | #include "sb.h" |
45 | #include "macro.h" | |
0239838b ILT |
46 | #ifndef HAVE_ITBL_CPU |
47 | #define itbl_parse(itbl_file) 1 | |
48 | #define itbl_init() | |
49 | #endif | |
d3038350 | 50 | |
bfc94743 ILT |
51 | #ifdef HAVE_SBRK |
52 | #ifdef NEED_DECLARATION_SBRK | |
53 | extern PTR sbrk (); | |
54 | #endif | |
55 | #endif | |
56 | ||
0239838b ILT |
57 | static void show_usage PARAMS ((FILE *)); |
58 | static void parse_args PARAMS ((int *, char ***)); | |
59 | static void dump_statistics PARAMS ((void)); | |
f5200318 | 60 | static void perform_an_assembly_pass PARAMS ((int argc, char **argv)); |
7e047ac2 | 61 | static int macro_expr PARAMS ((const char *, int, sb *, int *)); |
fecd2382 | 62 | |
6efd877d | 63 | int listing; /* true if a listing is wanted */ |
5d9f0ecf | 64 | |
85a961c6 ILT |
65 | static char *listing_filename = NULL; /* Name of listing file. */ |
66 | ||
cd924033 ILT |
67 | /* Type of debugging to generate. */ |
68 | ||
69 | enum debug_info_type debug_type = DEBUG_NONE; | |
70 | ||
7e047ac2 ILT |
71 | /* Maximum level of macro nesting. */ |
72 | ||
73 | int max_macro_nest = 100; | |
74 | ||
6efd877d | 75 | char *myname; /* argv[0] */ |
67f3dd71 | 76 | #ifdef BFD_ASSEMBLER |
6aba9d29 | 77 | segT reg_section, expr_section; |
67f3dd71 KR |
78 | segT text_section, data_section, bss_section; |
79 | #endif | |
ca7bd557 | 80 | |
c7a89bde ILT |
81 | int chunksize = 5000; |
82 | ||
83 | /* To monitor memory allocation more effectively, make this non-zero. | |
84 | Then the chunk sizes for gas and bfd will be reduced. */ | |
85 | int debug_memory = 0; | |
86 | ||
bfc94743 ILT |
87 | /* We build a list of defsyms as we read the options, and then define |
88 | them after we have initialized everything. */ | |
89 | ||
90 | struct defsym_list | |
91 | { | |
92 | struct defsym_list *next; | |
93 | char *name; | |
94 | valueT value; | |
95 | }; | |
96 | ||
97 | static struct defsym_list *defsyms; | |
efec4a28 DP |
98 | |
99 | /* Keep a record of the itbl files we read in. */ | |
100 | ||
101 | struct itbl_file_list | |
102 | { | |
103 | struct itbl_file_list *next; | |
104 | char *name; | |
105 | }; | |
106 | ||
107 | static struct itbl_file_list *itbl_files; | |
fecd2382 | 108 | \f |
f5200318 KR |
109 | void |
110 | print_version_id () | |
111 | { | |
112 | static int printed; | |
113 | if (printed) | |
114 | return; | |
115 | printed = 1; | |
116 | ||
cd924033 | 117 | fprintf (stderr, "GNU assembler version %s (%s)", VERSION, TARGET_ALIAS); |
f5200318 KR |
118 | #ifdef BFD_ASSEMBLER |
119 | fprintf (stderr, ", using BFD version %s", BFD_VERSION); | |
120 | #endif | |
121 | fprintf (stderr, "\n"); | |
122 | } | |
123 | ||
0239838b | 124 | static void |
ebd6f117 DM |
125 | show_usage (stream) |
126 | FILE *stream; | |
fecd2382 | 127 | { |
ebd6f117 DM |
128 | fprintf (stream, "Usage: %s [option...] [asmfile...]\n", myname); |
129 | ||
130 | fprintf (stream, "\ | |
131 | Options:\n\ | |
132 | -a[sub-option...] turn on listings\n\ | |
133 | Sub-options [default hls]:\n\ | |
0239838b | 134 | c omit false conditionals\n\ |
ebd6f117 DM |
135 | d omit debugging directives\n\ |
136 | h include high-level source\n\ | |
137 | l include assembly\n\ | |
138 | n omit forms processing\n\ | |
85a961c6 ILT |
139 | s include symbols\n\ |
140 | =file set listing file name (must be last sub-option)\n"); | |
a2a1a548 | 141 | fprintf (stream, "\ |
baed44cd | 142 | -D produce assembler debugging messages\n\ |
c7a89bde | 143 | --defsym SYM=VAL define symbol SYM to given value\n\ |
ebd6f117 | 144 | -f skip whitespace and comment preprocessing\n\ |
cd924033 | 145 | --gstabs generate stabs debugging information\n\ |
ebd6f117 DM |
146 | --help show this message and exit\n\ |
147 | -I DIR add DIR to search list for .include directives\n\ | |
148 | -J don't warn about signed overflow\n\ | |
149 | -K warn when differences altered for long displacements\n\ | |
150 | -L keep local symbols (starting with `L')\n"); | |
151 | fprintf (stream, "\ | |
7e047ac2 | 152 | -M,--mri assemble in MRI compatibility mode\n\ |
cd924033 | 153 | --MD FILE write dependency information in FILE (default none)\n\ |
baed44cd | 154 | -nocpp ignored\n\ |
f3d817d8 | 155 | -o OBJFILE name the object-file output OBJFILE (default a.out)\n\ |
ebd6f117 | 156 | -R fold data section into text section\n\ |
c7a89bde | 157 | --statistics print various measured statistics from execution\n\ |
ebd6f117 DM |
158 | --version print assembler version number and exit\n\ |
159 | -W suppress warnings\n\ | |
72797ffa | 160 | --itbl INSTTBL extend instruction set to include instructions\n\ |
efec4a28 | 161 | matching the specifications defined in file INSTTBL\n\ |
ebd6f117 | 162 | -w ignored\n\ |
baed44cd | 163 | -X ignored\n\ |
ebd6f117 DM |
164 | -Z generate object file even after errors\n"); |
165 | ||
f3d817d8 | 166 | md_show_usage (stream); |
bfc94743 ILT |
167 | |
168 | fprintf (stream, "\nReport bugs to bug-gnu-utils@prep.ai.mit.edu\n"); | |
ebd6f117 DM |
169 | } |
170 | ||
4761bb02 KR |
171 | #ifdef USE_EMULATIONS |
172 | #define EMULATION_ENVIRON "AS_EMULATION" | |
173 | ||
174 | extern struct emulation mipsbelf, mipslelf, mipself; | |
175 | extern struct emulation mipsbecoff, mipslecoff, mipsecoff; | |
0239838b | 176 | extern struct emulation i386coff, i386elf; |
4761bb02 | 177 | |
4761bb02 KR |
178 | static struct emulation *const emulations[] = { EMULATIONS }; |
179 | static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]); | |
180 | ||
0239838b ILT |
181 | static void select_emulation_mode PARAMS ((int, char **)); |
182 | ||
4761bb02 KR |
183 | static void |
184 | select_emulation_mode (argc, argv) | |
185 | int argc; | |
186 | char **argv; | |
187 | { | |
188 | int i; | |
189 | char *p, *em = 0; | |
190 | ||
191 | for (i = 1; i < argc; i++) | |
192 | if (!strncmp ("--em", argv[i], 4)) | |
193 | break; | |
194 | ||
195 | if (i == argc) | |
196 | goto do_default; | |
197 | ||
198 | p = strchr (argv[i], '='); | |
199 | if (p) | |
200 | p++; | |
201 | else | |
202 | p = argv[i+1]; | |
203 | ||
204 | if (!p || !*p) | |
205 | as_fatal ("missing emulation mode name"); | |
206 | em = p; | |
207 | ||
208 | do_default: | |
209 | if (em == 0) | |
210 | em = getenv (EMULATION_ENVIRON); | |
211 | if (em == 0) | |
212 | em = DEFAULT_EMULATION; | |
213 | ||
214 | if (em) | |
215 | { | |
216 | for (i = 0; i < n_emulations; i++) | |
217 | if (!strcmp (emulations[i]->name, em)) | |
218 | break; | |
219 | if (i == n_emulations) | |
220 | as_fatal ("unrecognized emulation name `%s'", em); | |
221 | this_emulation = emulations[i]; | |
222 | } | |
223 | else | |
224 | this_emulation = emulations[0]; | |
225 | ||
226 | this_emulation->init (); | |
227 | } | |
228 | ||
229 | const char * | |
230 | default_emul_bfd_name () | |
231 | { | |
232 | abort (); | |
8095b665 | 233 | return NULL; |
4761bb02 KR |
234 | } |
235 | ||
236 | void | |
237 | common_emul_init () | |
238 | { | |
239 | this_format = this_emulation->format; | |
240 | ||
241 | if (this_emulation->leading_underscore == 2) | |
242 | this_emulation->leading_underscore = this_format->dfl_leading_underscore; | |
243 | ||
244 | if (this_emulation->default_endian != 2) | |
245 | target_big_endian = this_emulation->default_endian; | |
246 | ||
247 | if (this_emulation->fake_label_name == 0) | |
248 | { | |
249 | if (this_emulation->leading_underscore) | |
250 | this_emulation->fake_label_name = "L0\001"; | |
251 | else | |
252 | /* What other parameters should we test? */ | |
253 | this_emulation->fake_label_name = ".L0\001"; | |
254 | } | |
255 | } | |
256 | #endif | |
257 | ||
ebd6f117 | 258 | /* |
ebd6f117 DM |
259 | * Since it is easy to do here we interpret the special arg "-" |
260 | * to mean "use stdin" and we set that argv[] pointing to "". | |
261 | * After we have munged argv[], the only things left are source file | |
262 | * name(s) and ""(s) denoting stdin. These file names are used | |
263 | * (perhaps more than once) later. | |
f3d817d8 | 264 | * |
ebd6f117 DM |
265 | * check for new machine-dep cmdline options in |
266 | * md_parse_option definitions in config/tc-*.c | |
267 | */ | |
268 | ||
0239838b | 269 | static void |
f3d817d8 DM |
270 | parse_args (pargc, pargv) |
271 | int *pargc; | |
272 | char ***pargv; | |
ebd6f117 | 273 | { |
f3d817d8 DM |
274 | int old_argc, new_argc; |
275 | char **old_argv, **new_argv; | |
276 | ||
277 | /* Starting the short option string with '-' is for programs that | |
278 | expect options and other ARGV-elements in any order and that care about | |
279 | the ordering of the two. We describe each non-option ARGV-element | |
280 | as if it were the argument of an option with character code 1. */ | |
281 | ||
282 | char *shortopts; | |
283 | extern CONST char *md_shortopts; | |
a7aa7a2b ILT |
284 | static const char std_shortopts[] = |
285 | { | |
286 | '-', 'J', | |
287 | #ifndef WORKING_DOT_WORD | |
288 | /* -K is not meaningful if .word is not being hacked. */ | |
289 | 'K', | |
a2a1a548 | 290 | #endif |
7e047ac2 | 291 | 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':', |
a7aa7a2b ILT |
292 | #ifndef VMS |
293 | /* -v takes an argument on VMS, so we don't make it a generic | |
294 | option. */ | |
295 | 'v', | |
296 | #endif | |
297 | 'w', 'X', | |
9218cee0 | 298 | /* New option for extending instruction set (see also --itbl below) */ |
cd924033 | 299 | 't', ':', |
a7aa7a2b ILT |
300 | '\0' |
301 | }; | |
f3d817d8 DM |
302 | struct option *longopts; |
303 | extern struct option md_longopts[]; | |
304 | extern size_t md_longopts_size; | |
460531da | 305 | static const struct option std_longopts[] = { |
f3d817d8 DM |
306 | #define OPTION_HELP (OPTION_STD_BASE) |
307 | {"help", no_argument, NULL, OPTION_HELP}, | |
7e047ac2 | 308 | {"mri", no_argument, NULL, 'M'}, |
f3d817d8 DM |
309 | #define OPTION_NOCPP (OPTION_STD_BASE + 1) |
310 | {"nocpp", no_argument, NULL, OPTION_NOCPP}, | |
311 | #define OPTION_STATISTICS (OPTION_STD_BASE + 2) | |
312 | {"statistics", no_argument, NULL, OPTION_STATISTICS}, | |
313 | #define OPTION_VERSION (OPTION_STD_BASE + 3) | |
314 | {"version", no_argument, NULL, OPTION_VERSION}, | |
460531da KR |
315 | #define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4) |
316 | {"dump-config", no_argument, NULL, OPTION_DUMPCONFIG}, | |
fb870b50 MT |
317 | #define OPTION_VERBOSE (OPTION_STD_BASE + 5) |
318 | {"verbose", no_argument, NULL, OPTION_VERBOSE}, | |
4761bb02 KR |
319 | #define OPTION_EMULATION (OPTION_STD_BASE + 6) |
320 | {"emulation", required_argument, NULL, OPTION_EMULATION}, | |
c7a89bde | 321 | #define OPTION_DEFSYM (OPTION_STD_BASE + 7) |
efec4a28 DP |
322 | {"defsym", required_argument, NULL, OPTION_DEFSYM}, |
323 | #define OPTION_INSTTBL (OPTION_STD_BASE + 8) | |
324 | /* New option for extending instruction set (see also -t above). | |
9218cee0 ILT |
325 | The "-t file" or "--itbl file" option extends the basic set of |
326 | valid instructions by reading "file", a text file containing a | |
327 | list of instruction formats. The additional opcodes and their | |
328 | formats are added to the built-in set of instructions, and | |
329 | mnemonics for new registers may also be defined. */ | |
cd924033 ILT |
330 | {"itbl", required_argument, NULL, OPTION_INSTTBL}, |
331 | #define OPTION_DEPFILE (OPTION_STD_BASE + 9) | |
332 | {"MD", required_argument, NULL, OPTION_DEPFILE}, | |
333 | #define OPTION_GSTABS (OPTION_STD_BASE + 10) | |
334 | {"gstabs", no_argument, NULL, OPTION_GSTABS} | |
f3d817d8 DM |
335 | }; |
336 | ||
337 | /* Construct the option lists from the standard list and the | |
338 | target dependent list. */ | |
339 | shortopts = concat (std_shortopts, md_shortopts, (char *) NULL); | |
a2a1a548 | 340 | longopts = (struct option *) xmalloc (sizeof (std_longopts) + md_longopts_size); |
f3d817d8 DM |
341 | memcpy (longopts, std_longopts, sizeof (std_longopts)); |
342 | memcpy ((char *) longopts + sizeof (std_longopts), | |
343 | md_longopts, md_longopts_size); | |
344 | ||
345 | /* Make a local copy of the old argv. */ | |
346 | old_argc = *pargc; | |
347 | old_argv = *pargv; | |
348 | ||
349 | /* Initialize a new argv that contains no options. */ | |
350 | new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1)); | |
351 | new_argv[0] = old_argv[0]; | |
352 | new_argc = 1; | |
353 | new_argv[new_argc] = NULL; | |
354 | ||
355 | while (1) | |
6efd877d | 356 | { |
f3d817d8 DM |
357 | /* getopt_long_only is like getopt_long, but '-' as well as '--' can |
358 | indicate a long option. */ | |
359 | int longind; | |
360 | int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts, | |
361 | &longind); | |
ebd6f117 | 362 | |
f3d817d8 DM |
363 | if (optc == -1) |
364 | break; | |
6efd877d | 365 | |
f3d817d8 DM |
366 | switch (optc) |
367 | { | |
368 | default: | |
369 | /* md_parse_option should return 1 if it recognizes optc, | |
370 | 0 if not. */ | |
fb870b50 MT |
371 | if (md_parse_option (optc, optarg) != 0) |
372 | break; | |
373 | /* `-v' isn't included in the general short_opts list, so check for | |
374 | it explicity here before deciding we've gotten a bad argument. */ | |
375 | if (optc == 'v') | |
376 | { | |
377 | #ifdef VMS | |
378 | /* Telling getopt to treat -v's value as optional can result | |
379 | in it picking up a following filename argument here. The | |
380 | VMS code in md_parse_option can return 0 in that case, | |
381 | but it has no way of pushing the filename argument back. */ | |
382 | if (optarg && *optarg) | |
383 | new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL; | |
384 | else | |
385 | #else | |
386 | case 'v': | |
387 | #endif | |
388 | case OPTION_VERBOSE: | |
389 | print_version_id (); | |
390 | break; | |
391 | } | |
392 | /*FALLTHRU*/ | |
f3d817d8 DM |
393 | |
394 | case '?': | |
395 | exit (EXIT_FAILURE); | |
396 | ||
397 | case 1: /* File name. */ | |
398 | if (!strcmp (optarg, "-")) | |
399 | optarg = ""; | |
400 | new_argv[new_argc++] = optarg; | |
401 | new_argv[new_argc] = NULL; | |
402 | break; | |
403 | ||
404 | case OPTION_HELP: | |
405 | show_usage (stdout); | |
460531da | 406 | exit (EXIT_SUCCESS); |
f3d817d8 DM |
407 | |
408 | case OPTION_NOCPP: | |
409 | break; | |
410 | ||
411 | case OPTION_STATISTICS: | |
460531da | 412 | flag_print_statistics = 1; |
f3d817d8 DM |
413 | break; |
414 | ||
415 | case OPTION_VERSION: | |
bfc94743 | 416 | /* This output is intended to follow the GNU standards document. */ |
cd924033 | 417 | printf ("GNU assembler %s\n", VERSION); |
0239838b | 418 | printf ("Copyright 1997 Free Software Foundation, Inc.\n"); |
bfc94743 ILT |
419 | printf ("\ |
420 | This program is free software; you may redistribute it under the terms of\n\ | |
421 | the GNU General Public License. This program has absolutely no warranty.\n"); | |
422 | printf ("This assembler was configured for a target of `%s'.\n", | |
423 | TARGET_ALIAS); | |
460531da KR |
424 | exit (EXIT_SUCCESS); |
425 | ||
4761bb02 | 426 | case OPTION_EMULATION: |
e63c594d | 427 | #ifdef USE_EMULATIONS |
4761bb02 KR |
428 | if (strcmp (optarg, this_emulation->name)) |
429 | as_fatal ("multiple emulation names specified"); | |
e63c594d FF |
430 | #else |
431 | as_fatal ("emulations not handled in this configuration"); | |
432 | #endif | |
4761bb02 KR |
433 | break; |
434 | ||
460531da KR |
435 | case OPTION_DUMPCONFIG: |
436 | fprintf (stderr, "alias = %s\n", TARGET_ALIAS); | |
437 | fprintf (stderr, "canonical = %s\n", TARGET_CANONICAL); | |
438 | fprintf (stderr, "cpu-type = %s\n", TARGET_CPU); | |
439 | #ifdef TARGET_OBJ_FORMAT | |
440 | fprintf (stderr, "format = %s\n", TARGET_OBJ_FORMAT); | |
441 | #endif | |
442 | #ifdef TARGET_FORMAT | |
443 | fprintf (stderr, "bfd-target = %s\n", TARGET_FORMAT); | |
444 | #endif | |
445 | exit (EXIT_SUCCESS); | |
f3d817d8 | 446 | |
c7a89bde ILT |
447 | case OPTION_DEFSYM: |
448 | { | |
449 | char *s; | |
450 | long i; | |
bfc94743 | 451 | struct defsym_list *n; |
c7a89bde ILT |
452 | |
453 | for (s = optarg; *s != '\0' && *s != '='; s++) | |
454 | ; | |
455 | if (*s == '\0') | |
456 | as_fatal ("bad defsym; format is --defsym name=value"); | |
457 | *s++ = '\0'; | |
458 | i = strtol (s, (char **) NULL, 0); | |
bfc94743 ILT |
459 | n = (struct defsym_list *) xmalloc (sizeof *n); |
460 | n->next = defsyms; | |
461 | n->name = optarg; | |
462 | n->value = i; | |
463 | defsyms = n; | |
c7a89bde ILT |
464 | } |
465 | break; | |
466 | ||
efec4a28 DP |
467 | case OPTION_INSTTBL: |
468 | case 't': | |
469 | { | |
470 | /* optarg is the name of the file containing the instruction | |
471 | formats, opcodes, register names, etc. */ | |
472 | struct itbl_file_list *n; | |
473 | ||
cd924033 ILT |
474 | if (optarg == NULL) |
475 | { | |
476 | as_warn ( "No file name following -t option\n" ); | |
477 | break; | |
478 | } | |
479 | ||
efec4a28 DP |
480 | n = (struct itbl_file_list *) xmalloc (sizeof *n); |
481 | n->next = itbl_files; | |
482 | n->name = optarg; | |
483 | itbl_files = n; | |
484 | ||
485 | /* Parse the file and add the new instructions to our internal | |
486 | table. If multiple instruction tables are specified, the | |
487 | information from this table gets appended onto the existing | |
488 | internal table. */ | |
489 | itbl_files->name = xstrdup (optarg); | |
9218cee0 ILT |
490 | if (itbl_parse (itbl_files->name) != 0) |
491 | { | |
492 | fprintf (stderr, "Failed to read instruction table %s\n", | |
493 | itbl_files->name); | |
494 | exit (EXIT_SUCCESS); | |
495 | } | |
efec4a28 DP |
496 | } |
497 | break; | |
498 | ||
cd924033 ILT |
499 | case OPTION_DEPFILE: |
500 | start_dependencies (optarg); | |
501 | break; | |
502 | ||
503 | case OPTION_GSTABS: | |
504 | debug_type = DEBUG_STABS; | |
505 | break; | |
506 | ||
f3d817d8 | 507 | case 'J': |
def66e24 DM |
508 | flag_signed_overflow_ok = 1; |
509 | break; | |
510 | ||
a7aa7a2b | 511 | #ifndef WORKING_DOT_WORD |
f3d817d8 | 512 | case 'K': |
def66e24 DM |
513 | flag_warn_displacement = 1; |
514 | break; | |
a7aa7a2b | 515 | #endif |
def66e24 | 516 | |
f3d817d8 | 517 | case 'L': |
def66e24 DM |
518 | flag_keep_locals = 1; |
519 | break; | |
520 | ||
7e047ac2 ILT |
521 | case 'M': |
522 | flag_mri = 1; | |
c7a89bde ILT |
523 | #ifdef TC_M68K |
524 | flag_m68k_mri = 1; | |
525 | #endif | |
7e047ac2 ILT |
526 | break; |
527 | ||
f3d817d8 | 528 | case 'R': |
def66e24 DM |
529 | flag_readonly_data_in_text = 1; |
530 | break; | |
531 | ||
f3d817d8 | 532 | case 'W': |
def66e24 DM |
533 | flag_no_warnings = 1; |
534 | break; | |
535 | ||
f3d817d8 | 536 | case 'Z': |
def66e24 | 537 | flag_always_generate_output = 1; |
f3d817d8 DM |
538 | break; |
539 | ||
540 | case 'a': | |
541 | if (optarg) | |
6efd877d | 542 | { |
f3d817d8 | 543 | while (*optarg) |
d3038350 | 544 | { |
f3d817d8 DM |
545 | switch (*optarg) |
546 | { | |
0239838b ILT |
547 | case 'c': |
548 | listing |= LISTING_NOCOND; | |
549 | break; | |
f3d817d8 DM |
550 | case 'd': |
551 | listing |= LISTING_NODEBUG; | |
552 | break; | |
553 | case 'h': | |
554 | listing |= LISTING_HLL; | |
555 | break; | |
556 | case 'l': | |
557 | listing |= LISTING_LISTING; | |
558 | break; | |
559 | case 'n': | |
560 | listing |= LISTING_NOFORM; | |
561 | break; | |
562 | case 's': | |
563 | listing |= LISTING_SYMBOLS; | |
564 | break; | |
85a961c6 | 565 | case '=': |
c7a89bde | 566 | listing_filename = xstrdup (optarg + 1); |
85a961c6 ILT |
567 | optarg += strlen (listing_filename); |
568 | break; | |
f3d817d8 | 569 | default: |
460531da | 570 | as_fatal ("invalid listing option `%c'", *optarg); |
f3d817d8 DM |
571 | break; |
572 | } | |
573 | optarg++; | |
d3038350 | 574 | } |
6efd877d | 575 | } |
f3d817d8 DM |
576 | if (!listing) |
577 | listing = LISTING_DEFAULT; | |
578 | break; | |
579 | ||
580 | case 'D': | |
581 | /* DEBUG is implemented: it debugs different */ | |
baed44cd | 582 | /* things from other people's assemblers. */ |
def66e24 DM |
583 | flag_debug = 1; |
584 | break; | |
585 | ||
586 | case 'f': | |
587 | flag_no_comments = 1; | |
f3d817d8 DM |
588 | break; |
589 | ||
590 | case 'I': | |
591 | { /* Include file directory */ | |
c7a89bde | 592 | char *temp = xstrdup (optarg); |
f3d817d8 DM |
593 | add_include_dir (temp); |
594 | break; | |
595 | } | |
596 | ||
597 | case 'o': | |
c7a89bde | 598 | out_file_name = xstrdup (optarg); |
f3d817d8 DM |
599 | break; |
600 | ||
f3d817d8 DM |
601 | case 'w': |
602 | break; | |
603 | ||
604 | case 'X': | |
605 | /* -X means treat warnings as errors */ | |
606 | break; | |
6efd877d | 607 | } |
6efd877d | 608 | } |
f3d817d8 DM |
609 | |
610 | free (shortopts); | |
611 | free (longopts); | |
612 | ||
613 | *pargc = new_argc; | |
614 | *pargv = new_argv; | |
ebd6f117 DM |
615 | } |
616 | ||
c7a89bde ILT |
617 | static long start_time; |
618 | ||
ebd6f117 DM |
619 | int |
620 | main (argc, argv) | |
621 | int argc; | |
622 | char **argv; | |
623 | { | |
c7a89bde ILT |
624 | int macro_alternate; |
625 | int macro_strip_at; | |
ebd6f117 | 626 | int keep_it; |
c7a89bde ILT |
627 | |
628 | start_time = get_run_time (); | |
629 | ||
efec4a28 | 630 | |
c7a89bde ILT |
631 | if (debug_memory) |
632 | { | |
633 | #ifdef BFD_ASSEMBLER | |
634 | extern long _bfd_chunksize; | |
635 | _bfd_chunksize = 64; | |
636 | #endif | |
637 | chunksize = 64; | |
638 | } | |
ebd6f117 | 639 | |
a2a1a548 ILT |
640 | #ifdef HOST_SPECIAL_INIT |
641 | HOST_SPECIAL_INIT (argc, argv); | |
642 | #endif | |
460531da | 643 | |
ebd6f117 | 644 | myname = argv[0]; |
d2a0c9f9 KR |
645 | xmalloc_set_program_name (myname); |
646 | ||
87e48495 KR |
647 | START_PROGRESS (myname, 0); |
648 | ||
ebd6f117 DM |
649 | #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME |
650 | #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out" | |
651 | #endif | |
d2a0c9f9 | 652 | |
ebd6f117 DM |
653 | out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME; |
654 | ||
4761bb02 | 655 | hex_init (); |
ebd6f117 DM |
656 | #ifdef BFD_ASSEMBLER |
657 | bfd_init (); | |
8095b665 | 658 | bfd_set_error_program_name (myname); |
ebd6f117 DM |
659 | #endif |
660 | ||
4761bb02 KR |
661 | #ifdef USE_EMULATIONS |
662 | select_emulation_mode (argc, argv); | |
663 | #endif | |
664 | ||
87e48495 | 665 | PROGRESS (1); |
ebd6f117 | 666 | symbol_begin (); |
87e48495 | 667 | frag_init (); |
ebd6f117 | 668 | subsegs_begin (); |
efec4a28 | 669 | parse_args (&argc, &argv); |
c7a89bde | 670 | read_begin (); |
7e047ac2 ILT |
671 | input_scrub_begin (); |
672 | expr_begin (); | |
c7a89bde ILT |
673 | |
674 | if (flag_print_statistics) | |
675 | xatexit (dump_statistics); | |
676 | ||
677 | macro_alternate = 0; | |
678 | macro_strip_at = 0; | |
679 | #ifdef TC_I960 | |
680 | macro_strip_at = flag_mri; | |
681 | #endif | |
682 | #ifdef TC_A29K | |
683 | /* For compatibility with the AMD 29K family macro assembler | |
684 | specification. */ | |
685 | macro_alternate = 1; | |
686 | macro_strip_at = 1; | |
687 | #endif | |
688 | ||
689 | macro_init (macro_alternate, flag_mri, macro_strip_at, macro_expr); | |
67f3dd71 | 690 | |
87e48495 KR |
691 | PROGRESS (1); |
692 | ||
67f3dd71 KR |
693 | #ifdef BFD_ASSEMBLER |
694 | output_file_create (out_file_name); | |
695 | assert (stdoutput != 0); | |
fecd2382 | 696 | #endif |
67f3dd71 | 697 | |
ebd6f117 DM |
698 | #ifdef tc_init_after_args |
699 | tc_init_after_args (); | |
700 | #endif | |
701 | ||
efec4a28 DP |
702 | itbl_init (); |
703 | ||
bfc94743 ILT |
704 | /* Now that we have fully initialized, and have created the output |
705 | file, define any symbols requested by --defsym command line | |
706 | arguments. */ | |
707 | while (defsyms != NULL) | |
708 | { | |
709 | symbolS *sym; | |
710 | struct defsym_list *next; | |
711 | ||
712 | sym = symbol_new (defsyms->name, absolute_section, defsyms->value, | |
713 | &zero_address_frag); | |
714 | symbol_table_insert (sym); | |
715 | next = defsyms->next; | |
716 | free (defsyms); | |
717 | defsyms = next; | |
718 | } | |
719 | ||
87e48495 KR |
720 | PROGRESS (1); |
721 | ||
6efd877d | 722 | perform_an_assembly_pass (argc, argv); /* Assemble it. */ |
c7a89bde | 723 | |
0239838b ILT |
724 | cond_finish_check (-1); |
725 | ||
c7a89bde ILT |
726 | #ifdef md_end |
727 | md_end (); | |
fb870b50 | 728 | #endif |
8b13fa4e | 729 | |
6efd877d | 730 | if (seen_at_least_1_file () |
efec4a28 | 731 | && (flag_always_generate_output || had_errors () == 0)) |
398527f2 | 732 | keep_it = 1; |
f5200318 | 733 | else |
398527f2 KR |
734 | keep_it = 0; |
735 | ||
736 | if (keep_it) | |
737 | write_object_file (); | |
738 | ||
739 | #ifndef NO_LISTING | |
85a961c6 | 740 | listing_print (listing_filename); |
f5200318 | 741 | #endif |
6efd877d | 742 | |
ebd6f117 | 743 | #ifndef OBJ_VMS /* does its own file handling */ |
398527f2 KR |
744 | #ifndef BFD_ASSEMBLER |
745 | if (keep_it) | |
746 | #endif | |
747 | output_file_close (out_file_name); | |
ebd6f117 | 748 | #endif |
398527f2 | 749 | |
efec4a28 DP |
750 | if (had_errors () > 0 && ! flag_always_generate_output) |
751 | keep_it = 0; | |
752 | ||
398527f2 KR |
753 | if (!keep_it) |
754 | unlink (out_file_name); | |
755 | ||
6efd877d | 756 | input_scrub_end (); |
6efd877d | 757 | |
87e48495 KR |
758 | END_PROGRESS (myname); |
759 | ||
c7a89bde ILT |
760 | /* Use xexit instead of return, because under VMS environments they |
761 | may not place the same interpretation on the value given. */ | |
efec4a28 | 762 | if (had_errors () > 0) |
c7a89bde | 763 | xexit (EXIT_FAILURE); |
cd924033 ILT |
764 | |
765 | /* Only generate dependency file if assembler was successful. */ | |
766 | print_dependencies (); | |
767 | ||
c7a89bde ILT |
768 | xexit (EXIT_SUCCESS); |
769 | } | |
770 | ||
771 | static void | |
772 | dump_statistics () | |
773 | { | |
774 | extern char **environ; | |
e63c594d | 775 | #ifdef HAVE_SBRK |
c7a89bde | 776 | char *lim = (char *) sbrk (0); |
e63c594d | 777 | #endif |
c7a89bde | 778 | long run_time = get_run_time () - start_time; |
ca7bd557 | 779 | |
c7a89bde ILT |
780 | fprintf (stderr, "%s: total time in assembly: %ld.%06ld\n", |
781 | myname, run_time / 1000000, run_time % 1000000); | |
e63c594d | 782 | #ifdef HAVE_SBRK |
c7a89bde ILT |
783 | fprintf (stderr, "%s: data size %ld\n", |
784 | myname, (long) (lim - (char *) &environ)); | |
e63c594d | 785 | #endif |
ca7bd557 | 786 | |
c7a89bde ILT |
787 | subsegs_print_statistics (stderr); |
788 | write_print_statistics (stderr); | |
789 | symbol_print_statistics (stderr); | |
790 | read_print_statistics (stderr); | |
791 | ||
792 | #ifdef tc_print_statistics | |
793 | tc_print_statistics (stderr); | |
794 | #endif | |
795 | #ifdef obj_print_statistics | |
796 | obj_print_statistics (stderr); | |
797 | #endif | |
d3038350 | 798 | } |
fecd2382 | 799 | \f |
6efd877d | 800 | |
fecd2382 RP |
801 | /* perform_an_assembly_pass() |
802 | * | |
803 | * Here to attempt 1 pass over each input file. | |
804 | * We scan argv[*] looking for filenames or exactly "" which is | |
805 | * shorthand for stdin. Any argv that is NULL is not a file-name. | |
806 | * We set need_pass_2 TRUE if, after this, we still have unresolved | |
807 | * expressions of the form (unknown value)+-(unknown value). | |
808 | * | |
809 | * Note the un*x semantics: there is only 1 logical input file, but it | |
810 | * may be a catenation of many 'physical' input files. | |
811 | */ | |
6efd877d KR |
812 | static void |
813 | perform_an_assembly_pass (argc, argv) | |
814 | int argc; | |
815 | char **argv; | |
fecd2382 | 816 | { |
6efd877d | 817 | int saw_a_file = 0; |
67f3dd71 KR |
818 | #ifdef BFD_ASSEMBLER |
819 | flagword applicable; | |
820 | #endif | |
821 | ||
6efd877d KR |
822 | need_pass_2 = 0; |
823 | ||
67f3dd71 | 824 | #ifndef BFD_ASSEMBLER |
5d9f0ecf | 825 | #ifdef MANY_SEGMENTS |
f5200318 KR |
826 | { |
827 | unsigned int i; | |
828 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
6efd877d | 829 | segment_info[i].fix_root = 0; |
f5200318 | 830 | } |
6efd877d | 831 | /* Create the three fixed ones */ |
6aba9d29 JL |
832 | { |
833 | segT seg; | |
834 | ||
ebd6f117 DM |
835 | #ifdef TE_APOLLO |
836 | seg = subseg_new (".wtext", 0); | |
837 | #else | |
6aba9d29 | 838 | seg = subseg_new (".text", 0); |
ebd6f117 | 839 | #endif |
6aba9d29 JL |
840 | assert (seg == SEG_E0); |
841 | seg = subseg_new (".data", 0); | |
842 | assert (seg == SEG_E1); | |
843 | seg = subseg_new (".bss", 0); | |
844 | assert (seg == SEG_E2); | |
ebd6f117 DM |
845 | #ifdef TE_APOLLO |
846 | create_target_segments (); | |
847 | #endif | |
6aba9d29 JL |
848 | } |
849 | ||
e6498b10 | 850 | #else /* not MANY_SEGMENTS */ |
6efd877d KR |
851 | text_fix_root = NULL; |
852 | data_fix_root = NULL; | |
853 | bss_fix_root = NULL; | |
e6498b10 | 854 | #endif /* not MANY_SEGMENTS */ |
67f3dd71 KR |
855 | #else /* BFD_ASSEMBLER */ |
856 | /* Create the standard sections, and those the assembler uses | |
857 | internally. */ | |
858 | text_section = subseg_new (".text", 0); | |
67f3dd71 | 859 | data_section = subseg_new (".data", 0); |
67f3dd71 | 860 | bss_section = subseg_new (".bss", 0); |
67f3dd71 KR |
861 | /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed |
862 | to have relocs, otherwise we don't find out in time. */ | |
863 | applicable = bfd_applicable_section_flags (stdoutput); | |
864 | bfd_set_section_flags (stdoutput, text_section, | |
865 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
866 | | SEC_CODE | SEC_READONLY)); | |
867 | /* @@ FIXME -- SEC_CODE seems to mean code only, rather than code possibly.*/ | |
868 | bfd_set_section_flags (stdoutput, data_section, | |
869 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)); | |
870 | bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC); | |
8b13fa4e | 871 | seg_info (bss_section)->bss = 1; |
67f3dd71 KR |
872 | subseg_new (BFD_ABS_SECTION_NAME, 0); |
873 | subseg_new (BFD_UND_SECTION_NAME, 0); | |
67f3dd71 | 874 | reg_section = subseg_new ("*GAS `reg' section*", 0); |
6aba9d29 | 875 | expr_section = subseg_new ("*GAS `expr' section*", 0); |
67f3dd71 | 876 | |
67f3dd71 | 877 | #endif /* BFD_ASSEMBLER */ |
e6498b10 | 878 | |
6aba9d29 JL |
879 | subseg_set (text_section, 0); |
880 | ||
f5200318 KR |
881 | /* This may add symbol table entries, which requires having an open BFD, |
882 | and sections already created, in BFD_ASSEMBLER mode. */ | |
883 | md_begin (); | |
884 | ||
0bd28bc4 ILT |
885 | #ifdef obj_begin |
886 | obj_begin (); | |
887 | #endif | |
888 | ||
6efd877d KR |
889 | argv++; /* skip argv[0] */ |
890 | argc--; /* skip argv[0] */ | |
891 | while (argc--) | |
892 | { | |
893 | if (*argv) | |
894 | { /* Is it a file-name argument? */ | |
87e48495 | 895 | PROGRESS (1); |
6efd877d KR |
896 | saw_a_file++; |
897 | /* argv->"" if stdin desired, else->filename */ | |
898 | read_a_source_file (*argv); | |
a39116f1 | 899 | } |
6efd877d KR |
900 | argv++; /* completed that argv */ |
901 | } | |
902 | if (!saw_a_file) | |
903 | read_a_source_file (""); | |
904 | } /* perform_an_assembly_pass() */ | |
fecd2382 | 905 | |
7e047ac2 ILT |
906 | /* The interface between the macro code and gas expression handling. */ |
907 | ||
908 | static int | |
909 | macro_expr (emsg, idx, in, val) | |
910 | const char *emsg; | |
911 | int idx; | |
912 | sb *in; | |
913 | int *val; | |
914 | { | |
915 | char *hold; | |
916 | expressionS ex; | |
917 | ||
918 | sb_terminate (in); | |
919 | ||
920 | hold = input_line_pointer; | |
921 | input_line_pointer = in->ptr + idx; | |
922 | expression (&ex); | |
923 | idx = input_line_pointer - in->ptr; | |
924 | input_line_pointer = hold; | |
925 | ||
926 | if (ex.X_op != O_constant) | |
927 | as_bad ("%s", emsg); | |
928 | ||
929 | *val = (int) ex.X_add_number; | |
930 | ||
931 | return idx; | |
932 | } | |
933 | ||
a39116f1 | 934 | /* end of as.c */ |