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 | |
c3b27a64 RH |
81 | /* The default obstack chunk size. If we set this to zero, the |
82 | obstack code will use whatever will fit in a 4096 byte block. */ | |
83 | int chunksize = 0; | |
c7a89bde ILT |
84 | |
85 | /* To monitor memory allocation more effectively, make this non-zero. | |
86 | Then the chunk sizes for gas and bfd will be reduced. */ | |
87 | int debug_memory = 0; | |
88 | ||
bfc94743 ILT |
89 | /* We build a list of defsyms as we read the options, and then define |
90 | them after we have initialized everything. */ | |
91 | ||
92 | struct defsym_list | |
93 | { | |
94 | struct defsym_list *next; | |
95 | char *name; | |
96 | valueT value; | |
97 | }; | |
98 | ||
99 | static struct defsym_list *defsyms; | |
efec4a28 DP |
100 | |
101 | /* Keep a record of the itbl files we read in. */ | |
102 | ||
103 | struct itbl_file_list | |
104 | { | |
105 | struct itbl_file_list *next; | |
106 | char *name; | |
107 | }; | |
108 | ||
109 | static struct itbl_file_list *itbl_files; | |
fecd2382 | 110 | \f |
f5200318 KR |
111 | void |
112 | print_version_id () | |
113 | { | |
114 | static int printed; | |
115 | if (printed) | |
116 | return; | |
117 | printed = 1; | |
118 | ||
cd924033 | 119 | fprintf (stderr, "GNU assembler version %s (%s)", VERSION, TARGET_ALIAS); |
f5200318 KR |
120 | #ifdef BFD_ASSEMBLER |
121 | fprintf (stderr, ", using BFD version %s", BFD_VERSION); | |
122 | #endif | |
123 | fprintf (stderr, "\n"); | |
124 | } | |
125 | ||
0239838b | 126 | static void |
ebd6f117 DM |
127 | show_usage (stream) |
128 | FILE *stream; | |
fecd2382 | 129 | { |
ebd6f117 DM |
130 | fprintf (stream, "Usage: %s [option...] [asmfile...]\n", myname); |
131 | ||
132 | fprintf (stream, "\ | |
133 | Options:\n\ | |
134 | -a[sub-option...] turn on listings\n\ | |
135 | Sub-options [default hls]:\n\ | |
0239838b | 136 | c omit false conditionals\n\ |
ebd6f117 DM |
137 | d omit debugging directives\n\ |
138 | h include high-level source\n\ | |
139 | l include assembly\n\ | |
c3b27a64 | 140 | m include macro expansions\n\ |
ebd6f117 | 141 | n omit forms processing\n\ |
85a961c6 ILT |
142 | s include symbols\n\ |
143 | =file set listing file name (must be last sub-option)\n"); | |
a2a1a548 | 144 | fprintf (stream, "\ |
baed44cd | 145 | -D produce assembler debugging messages\n\ |
c7a89bde | 146 | --defsym SYM=VAL define symbol SYM to given value\n\ |
ebd6f117 | 147 | -f skip whitespace and comment preprocessing\n\ |
cd924033 | 148 | --gstabs generate stabs debugging information\n\ |
ebd6f117 DM |
149 | --help show this message and exit\n\ |
150 | -I DIR add DIR to search list for .include directives\n\ | |
151 | -J don't warn about signed overflow\n\ | |
152 | -K warn when differences altered for long displacements\n\ | |
c3b27a64 | 153 | -L,--keep-locals keep local symbols (e.g. starting with `L')\n"); |
ebd6f117 | 154 | fprintf (stream, "\ |
7e047ac2 | 155 | -M,--mri assemble in MRI compatibility mode\n\ |
cd924033 | 156 | --MD FILE write dependency information in FILE (default none)\n\ |
baed44cd | 157 | -nocpp ignored\n\ |
f3d817d8 | 158 | -o OBJFILE name the object-file output OBJFILE (default a.out)\n\ |
ebd6f117 | 159 | -R fold data section into text section\n\ |
c7a89bde | 160 | --statistics print various measured statistics from execution\n\ |
c3b27a64 | 161 | --strip-local-absolute strip local absolute symbols\n\ |
ebd6f117 DM |
162 | --version print assembler version number and exit\n\ |
163 | -W suppress warnings\n\ | |
72797ffa | 164 | --itbl INSTTBL extend instruction set to include instructions\n\ |
efec4a28 | 165 | matching the specifications defined in file INSTTBL\n\ |
ebd6f117 | 166 | -w ignored\n\ |
baed44cd | 167 | -X ignored\n\ |
ebd6f117 | 168 | -Z generate object file even after errors\n"); |
7b7a88d0 RH |
169 | fprintf (stream, "\ |
170 | --listing-lhs-width set the width in words of the output data column of\n\ | |
171 | the listing\n\ | |
172 | --listing-lhs-width2 set the width in words of the continuation lines\n\ | |
173 | of the output data column; ignored if smaller than\n\ | |
174 | the width of the first line\n\ | |
175 | --listing-rhs-width set the max width in characters of the lines from\n\ | |
176 | the source file\n\ | |
177 | --listing-cont-lines set the maximum number of continuation lines used\n\ | |
178 | for the output data column of the listing\n"); | |
ebd6f117 | 179 | |
f3d817d8 | 180 | md_show_usage (stream); |
bfc94743 ILT |
181 | |
182 | fprintf (stream, "\nReport bugs to bug-gnu-utils@prep.ai.mit.edu\n"); | |
ebd6f117 DM |
183 | } |
184 | ||
4761bb02 KR |
185 | #ifdef USE_EMULATIONS |
186 | #define EMULATION_ENVIRON "AS_EMULATION" | |
187 | ||
188 | extern struct emulation mipsbelf, mipslelf, mipself; | |
189 | extern struct emulation mipsbecoff, mipslecoff, mipsecoff; | |
0239838b | 190 | extern struct emulation i386coff, i386elf; |
4761bb02 | 191 | |
4761bb02 KR |
192 | static struct emulation *const emulations[] = { EMULATIONS }; |
193 | static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]); | |
194 | ||
0239838b ILT |
195 | static void select_emulation_mode PARAMS ((int, char **)); |
196 | ||
4761bb02 KR |
197 | static void |
198 | select_emulation_mode (argc, argv) | |
199 | int argc; | |
200 | char **argv; | |
201 | { | |
202 | int i; | |
203 | char *p, *em = 0; | |
204 | ||
205 | for (i = 1; i < argc; i++) | |
206 | if (!strncmp ("--em", argv[i], 4)) | |
207 | break; | |
208 | ||
209 | if (i == argc) | |
210 | goto do_default; | |
211 | ||
212 | p = strchr (argv[i], '='); | |
213 | if (p) | |
214 | p++; | |
215 | else | |
216 | p = argv[i+1]; | |
217 | ||
218 | if (!p || !*p) | |
219 | as_fatal ("missing emulation mode name"); | |
220 | em = p; | |
221 | ||
222 | do_default: | |
223 | if (em == 0) | |
224 | em = getenv (EMULATION_ENVIRON); | |
225 | if (em == 0) | |
226 | em = DEFAULT_EMULATION; | |
227 | ||
228 | if (em) | |
229 | { | |
230 | for (i = 0; i < n_emulations; i++) | |
231 | if (!strcmp (emulations[i]->name, em)) | |
232 | break; | |
233 | if (i == n_emulations) | |
234 | as_fatal ("unrecognized emulation name `%s'", em); | |
235 | this_emulation = emulations[i]; | |
236 | } | |
237 | else | |
238 | this_emulation = emulations[0]; | |
239 | ||
240 | this_emulation->init (); | |
241 | } | |
242 | ||
243 | const char * | |
244 | default_emul_bfd_name () | |
245 | { | |
246 | abort (); | |
8095b665 | 247 | return NULL; |
4761bb02 KR |
248 | } |
249 | ||
250 | void | |
251 | common_emul_init () | |
252 | { | |
253 | this_format = this_emulation->format; | |
254 | ||
255 | if (this_emulation->leading_underscore == 2) | |
256 | this_emulation->leading_underscore = this_format->dfl_leading_underscore; | |
257 | ||
258 | if (this_emulation->default_endian != 2) | |
259 | target_big_endian = this_emulation->default_endian; | |
260 | ||
261 | if (this_emulation->fake_label_name == 0) | |
262 | { | |
263 | if (this_emulation->leading_underscore) | |
264 | this_emulation->fake_label_name = "L0\001"; | |
265 | else | |
266 | /* What other parameters should we test? */ | |
267 | this_emulation->fake_label_name = ".L0\001"; | |
268 | } | |
269 | } | |
270 | #endif | |
271 | ||
ebd6f117 | 272 | /* |
ebd6f117 DM |
273 | * Since it is easy to do here we interpret the special arg "-" |
274 | * to mean "use stdin" and we set that argv[] pointing to "". | |
275 | * After we have munged argv[], the only things left are source file | |
276 | * name(s) and ""(s) denoting stdin. These file names are used | |
277 | * (perhaps more than once) later. | |
f3d817d8 | 278 | * |
ebd6f117 DM |
279 | * check for new machine-dep cmdline options in |
280 | * md_parse_option definitions in config/tc-*.c | |
281 | */ | |
282 | ||
0239838b | 283 | static void |
f3d817d8 DM |
284 | parse_args (pargc, pargv) |
285 | int *pargc; | |
286 | char ***pargv; | |
ebd6f117 | 287 | { |
f3d817d8 DM |
288 | int old_argc, new_argc; |
289 | char **old_argv, **new_argv; | |
290 | ||
291 | /* Starting the short option string with '-' is for programs that | |
292 | expect options and other ARGV-elements in any order and that care about | |
293 | the ordering of the two. We describe each non-option ARGV-element | |
294 | as if it were the argument of an option with character code 1. */ | |
295 | ||
296 | char *shortopts; | |
297 | extern CONST char *md_shortopts; | |
a7aa7a2b ILT |
298 | static const char std_shortopts[] = |
299 | { | |
300 | '-', 'J', | |
301 | #ifndef WORKING_DOT_WORD | |
302 | /* -K is not meaningful if .word is not being hacked. */ | |
303 | 'K', | |
a2a1a548 | 304 | #endif |
7e047ac2 | 305 | 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':', |
a7aa7a2b ILT |
306 | #ifndef VMS |
307 | /* -v takes an argument on VMS, so we don't make it a generic | |
308 | option. */ | |
309 | 'v', | |
310 | #endif | |
311 | 'w', 'X', | |
9218cee0 | 312 | /* New option for extending instruction set (see also --itbl below) */ |
cd924033 | 313 | 't', ':', |
a7aa7a2b ILT |
314 | '\0' |
315 | }; | |
f3d817d8 DM |
316 | struct option *longopts; |
317 | extern struct option md_longopts[]; | |
318 | extern size_t md_longopts_size; | |
460531da | 319 | static const struct option std_longopts[] = { |
f3d817d8 DM |
320 | #define OPTION_HELP (OPTION_STD_BASE) |
321 | {"help", no_argument, NULL, OPTION_HELP}, | |
c3b27a64 | 322 | {"keep-locals", no_argument, NULL, 'L'}, |
7e047ac2 | 323 | {"mri", no_argument, NULL, 'M'}, |
f3d817d8 DM |
324 | #define OPTION_NOCPP (OPTION_STD_BASE + 1) |
325 | {"nocpp", no_argument, NULL, OPTION_NOCPP}, | |
326 | #define OPTION_STATISTICS (OPTION_STD_BASE + 2) | |
327 | {"statistics", no_argument, NULL, OPTION_STATISTICS}, | |
328 | #define OPTION_VERSION (OPTION_STD_BASE + 3) | |
329 | {"version", no_argument, NULL, OPTION_VERSION}, | |
460531da KR |
330 | #define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4) |
331 | {"dump-config", no_argument, NULL, OPTION_DUMPCONFIG}, | |
fb870b50 MT |
332 | #define OPTION_VERBOSE (OPTION_STD_BASE + 5) |
333 | {"verbose", no_argument, NULL, OPTION_VERBOSE}, | |
4761bb02 KR |
334 | #define OPTION_EMULATION (OPTION_STD_BASE + 6) |
335 | {"emulation", required_argument, NULL, OPTION_EMULATION}, | |
c7a89bde | 336 | #define OPTION_DEFSYM (OPTION_STD_BASE + 7) |
efec4a28 DP |
337 | {"defsym", required_argument, NULL, OPTION_DEFSYM}, |
338 | #define OPTION_INSTTBL (OPTION_STD_BASE + 8) | |
339 | /* New option for extending instruction set (see also -t above). | |
9218cee0 ILT |
340 | The "-t file" or "--itbl file" option extends the basic set of |
341 | valid instructions by reading "file", a text file containing a | |
342 | list of instruction formats. The additional opcodes and their | |
343 | formats are added to the built-in set of instructions, and | |
344 | mnemonics for new registers may also be defined. */ | |
cd924033 | 345 | {"itbl", required_argument, NULL, OPTION_INSTTBL}, |
7b7a88d0 RH |
346 | #define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9) |
347 | {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH}, | |
348 | #define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10) | |
349 | {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2}, | |
350 | #define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11) | |
351 | {"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH}, | |
352 | #define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12) | |
353 | {"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES}, | |
354 | #define OPTION_DEPFILE (OPTION_STD_BASE + 13) | |
cd924033 | 355 | {"MD", required_argument, NULL, OPTION_DEPFILE}, |
7b7a88d0 | 356 | #define OPTION_GSTABS (OPTION_STD_BASE + 14) |
c3b27a64 | 357 | {"gstabs", no_argument, NULL, OPTION_GSTABS}, |
7b7a88d0 | 358 | #define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15) |
c3b27a64 | 359 | {"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE} |
f3d817d8 DM |
360 | }; |
361 | ||
362 | /* Construct the option lists from the standard list and the | |
363 | target dependent list. */ | |
364 | shortopts = concat (std_shortopts, md_shortopts, (char *) NULL); | |
a2a1a548 | 365 | longopts = (struct option *) xmalloc (sizeof (std_longopts) + md_longopts_size); |
f3d817d8 DM |
366 | memcpy (longopts, std_longopts, sizeof (std_longopts)); |
367 | memcpy ((char *) longopts + sizeof (std_longopts), | |
368 | md_longopts, md_longopts_size); | |
369 | ||
370 | /* Make a local copy of the old argv. */ | |
371 | old_argc = *pargc; | |
372 | old_argv = *pargv; | |
373 | ||
374 | /* Initialize a new argv that contains no options. */ | |
375 | new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1)); | |
376 | new_argv[0] = old_argv[0]; | |
377 | new_argc = 1; | |
378 | new_argv[new_argc] = NULL; | |
379 | ||
380 | while (1) | |
6efd877d | 381 | { |
f3d817d8 DM |
382 | /* getopt_long_only is like getopt_long, but '-' as well as '--' can |
383 | indicate a long option. */ | |
384 | int longind; | |
385 | int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts, | |
386 | &longind); | |
ebd6f117 | 387 | |
f3d817d8 DM |
388 | if (optc == -1) |
389 | break; | |
6efd877d | 390 | |
f3d817d8 DM |
391 | switch (optc) |
392 | { | |
393 | default: | |
394 | /* md_parse_option should return 1 if it recognizes optc, | |
395 | 0 if not. */ | |
fb870b50 MT |
396 | if (md_parse_option (optc, optarg) != 0) |
397 | break; | |
398 | /* `-v' isn't included in the general short_opts list, so check for | |
399 | it explicity here before deciding we've gotten a bad argument. */ | |
400 | if (optc == 'v') | |
401 | { | |
402 | #ifdef VMS | |
403 | /* Telling getopt to treat -v's value as optional can result | |
404 | in it picking up a following filename argument here. The | |
405 | VMS code in md_parse_option can return 0 in that case, | |
406 | but it has no way of pushing the filename argument back. */ | |
407 | if (optarg && *optarg) | |
408 | new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL; | |
409 | else | |
410 | #else | |
411 | case 'v': | |
412 | #endif | |
413 | case OPTION_VERBOSE: | |
414 | print_version_id (); | |
415 | break; | |
416 | } | |
417 | /*FALLTHRU*/ | |
f3d817d8 DM |
418 | |
419 | case '?': | |
420 | exit (EXIT_FAILURE); | |
421 | ||
422 | case 1: /* File name. */ | |
423 | if (!strcmp (optarg, "-")) | |
424 | optarg = ""; | |
425 | new_argv[new_argc++] = optarg; | |
426 | new_argv[new_argc] = NULL; | |
427 | break; | |
428 | ||
429 | case OPTION_HELP: | |
430 | show_usage (stdout); | |
460531da | 431 | exit (EXIT_SUCCESS); |
f3d817d8 DM |
432 | |
433 | case OPTION_NOCPP: | |
434 | break; | |
435 | ||
436 | case OPTION_STATISTICS: | |
460531da | 437 | flag_print_statistics = 1; |
f3d817d8 DM |
438 | break; |
439 | ||
c3b27a64 RH |
440 | case OPTION_STRIP_LOCAL_ABSOLUTE: |
441 | flag_strip_local_absolute = 1; | |
442 | break; | |
443 | ||
f3d817d8 | 444 | case OPTION_VERSION: |
bfc94743 | 445 | /* This output is intended to follow the GNU standards document. */ |
cd924033 | 446 | printf ("GNU assembler %s\n", VERSION); |
0239838b | 447 | printf ("Copyright 1997 Free Software Foundation, Inc.\n"); |
bfc94743 ILT |
448 | printf ("\ |
449 | This program is free software; you may redistribute it under the terms of\n\ | |
450 | the GNU General Public License. This program has absolutely no warranty.\n"); | |
451 | printf ("This assembler was configured for a target of `%s'.\n", | |
452 | TARGET_ALIAS); | |
460531da KR |
453 | exit (EXIT_SUCCESS); |
454 | ||
4761bb02 | 455 | case OPTION_EMULATION: |
e63c594d | 456 | #ifdef USE_EMULATIONS |
4761bb02 KR |
457 | if (strcmp (optarg, this_emulation->name)) |
458 | as_fatal ("multiple emulation names specified"); | |
e63c594d FF |
459 | #else |
460 | as_fatal ("emulations not handled in this configuration"); | |
461 | #endif | |
4761bb02 KR |
462 | break; |
463 | ||
460531da KR |
464 | case OPTION_DUMPCONFIG: |
465 | fprintf (stderr, "alias = %s\n", TARGET_ALIAS); | |
466 | fprintf (stderr, "canonical = %s\n", TARGET_CANONICAL); | |
467 | fprintf (stderr, "cpu-type = %s\n", TARGET_CPU); | |
468 | #ifdef TARGET_OBJ_FORMAT | |
469 | fprintf (stderr, "format = %s\n", TARGET_OBJ_FORMAT); | |
470 | #endif | |
471 | #ifdef TARGET_FORMAT | |
472 | fprintf (stderr, "bfd-target = %s\n", TARGET_FORMAT); | |
473 | #endif | |
474 | exit (EXIT_SUCCESS); | |
f3d817d8 | 475 | |
c7a89bde ILT |
476 | case OPTION_DEFSYM: |
477 | { | |
478 | char *s; | |
479 | long i; | |
bfc94743 | 480 | struct defsym_list *n; |
c7a89bde ILT |
481 | |
482 | for (s = optarg; *s != '\0' && *s != '='; s++) | |
483 | ; | |
484 | if (*s == '\0') | |
485 | as_fatal ("bad defsym; format is --defsym name=value"); | |
486 | *s++ = '\0'; | |
487 | i = strtol (s, (char **) NULL, 0); | |
bfc94743 ILT |
488 | n = (struct defsym_list *) xmalloc (sizeof *n); |
489 | n->next = defsyms; | |
490 | n->name = optarg; | |
491 | n->value = i; | |
492 | defsyms = n; | |
c7a89bde ILT |
493 | } |
494 | break; | |
495 | ||
efec4a28 DP |
496 | case OPTION_INSTTBL: |
497 | case 't': | |
498 | { | |
499 | /* optarg is the name of the file containing the instruction | |
500 | formats, opcodes, register names, etc. */ | |
501 | struct itbl_file_list *n; | |
502 | ||
cd924033 ILT |
503 | if (optarg == NULL) |
504 | { | |
505 | as_warn ( "No file name following -t option\n" ); | |
506 | break; | |
507 | } | |
508 | ||
efec4a28 DP |
509 | n = (struct itbl_file_list *) xmalloc (sizeof *n); |
510 | n->next = itbl_files; | |
511 | n->name = optarg; | |
512 | itbl_files = n; | |
513 | ||
514 | /* Parse the file and add the new instructions to our internal | |
515 | table. If multiple instruction tables are specified, the | |
516 | information from this table gets appended onto the existing | |
517 | internal table. */ | |
518 | itbl_files->name = xstrdup (optarg); | |
9218cee0 ILT |
519 | if (itbl_parse (itbl_files->name) != 0) |
520 | { | |
521 | fprintf (stderr, "Failed to read instruction table %s\n", | |
522 | itbl_files->name); | |
523 | exit (EXIT_SUCCESS); | |
524 | } | |
efec4a28 DP |
525 | } |
526 | break; | |
527 | ||
cd924033 ILT |
528 | case OPTION_DEPFILE: |
529 | start_dependencies (optarg); | |
530 | break; | |
531 | ||
532 | case OPTION_GSTABS: | |
533 | debug_type = DEBUG_STABS; | |
534 | break; | |
535 | ||
f3d817d8 | 536 | case 'J': |
def66e24 DM |
537 | flag_signed_overflow_ok = 1; |
538 | break; | |
539 | ||
a7aa7a2b | 540 | #ifndef WORKING_DOT_WORD |
f3d817d8 | 541 | case 'K': |
def66e24 DM |
542 | flag_warn_displacement = 1; |
543 | break; | |
a7aa7a2b | 544 | #endif |
def66e24 | 545 | |
f3d817d8 | 546 | case 'L': |
def66e24 DM |
547 | flag_keep_locals = 1; |
548 | break; | |
549 | ||
7b7a88d0 RH |
550 | case OPTION_LISTING_LHS_WIDTH: |
551 | listing_lhs_width = atoi(optarg); | |
552 | if (listing_lhs_width_second < listing_lhs_width) | |
553 | listing_lhs_width_second = listing_lhs_width; | |
554 | break; | |
555 | case OPTION_LISTING_LHS_WIDTH2: | |
556 | { | |
557 | int tmp = atoi(optarg); | |
558 | if (tmp > listing_lhs_width) | |
559 | listing_lhs_width_second = tmp; | |
560 | } | |
561 | break; | |
562 | case OPTION_LISTING_RHS_WIDTH: | |
563 | listing_rhs_width = atoi(optarg); | |
564 | break; | |
565 | case OPTION_LISTING_CONT_LINES: | |
566 | listing_lhs_cont_lines = atoi(optarg); | |
567 | break; | |
568 | ||
7e047ac2 ILT |
569 | case 'M': |
570 | flag_mri = 1; | |
c7a89bde ILT |
571 | #ifdef TC_M68K |
572 | flag_m68k_mri = 1; | |
573 | #endif | |
7e047ac2 ILT |
574 | break; |
575 | ||
f3d817d8 | 576 | case 'R': |
def66e24 DM |
577 | flag_readonly_data_in_text = 1; |
578 | break; | |
579 | ||
f3d817d8 | 580 | case 'W': |
def66e24 DM |
581 | flag_no_warnings = 1; |
582 | break; | |
583 | ||
f3d817d8 | 584 | case 'Z': |
def66e24 | 585 | flag_always_generate_output = 1; |
f3d817d8 DM |
586 | break; |
587 | ||
588 | case 'a': | |
589 | if (optarg) | |
6efd877d | 590 | { |
f3d817d8 | 591 | while (*optarg) |
d3038350 | 592 | { |
f3d817d8 DM |
593 | switch (*optarg) |
594 | { | |
0239838b ILT |
595 | case 'c': |
596 | listing |= LISTING_NOCOND; | |
597 | break; | |
f3d817d8 DM |
598 | case 'd': |
599 | listing |= LISTING_NODEBUG; | |
600 | break; | |
601 | case 'h': | |
602 | listing |= LISTING_HLL; | |
603 | break; | |
604 | case 'l': | |
605 | listing |= LISTING_LISTING; | |
606 | break; | |
c3b27a64 RH |
607 | case 'm': |
608 | listing |= LISTING_MACEXP; | |
609 | break; | |
f3d817d8 DM |
610 | case 'n': |
611 | listing |= LISTING_NOFORM; | |
612 | break; | |
613 | case 's': | |
614 | listing |= LISTING_SYMBOLS; | |
615 | break; | |
85a961c6 | 616 | case '=': |
c7a89bde | 617 | listing_filename = xstrdup (optarg + 1); |
85a961c6 ILT |
618 | optarg += strlen (listing_filename); |
619 | break; | |
f3d817d8 | 620 | default: |
460531da | 621 | as_fatal ("invalid listing option `%c'", *optarg); |
f3d817d8 DM |
622 | break; |
623 | } | |
624 | optarg++; | |
d3038350 | 625 | } |
6efd877d | 626 | } |
f3d817d8 DM |
627 | if (!listing) |
628 | listing = LISTING_DEFAULT; | |
629 | break; | |
630 | ||
631 | case 'D': | |
632 | /* DEBUG is implemented: it debugs different */ | |
baed44cd | 633 | /* things from other people's assemblers. */ |
def66e24 DM |
634 | flag_debug = 1; |
635 | break; | |
636 | ||
637 | case 'f': | |
638 | flag_no_comments = 1; | |
f3d817d8 DM |
639 | break; |
640 | ||
641 | case 'I': | |
642 | { /* Include file directory */ | |
c7a89bde | 643 | char *temp = xstrdup (optarg); |
f3d817d8 DM |
644 | add_include_dir (temp); |
645 | break; | |
646 | } | |
647 | ||
648 | case 'o': | |
c7a89bde | 649 | out_file_name = xstrdup (optarg); |
f3d817d8 DM |
650 | break; |
651 | ||
f3d817d8 DM |
652 | case 'w': |
653 | break; | |
654 | ||
655 | case 'X': | |
656 | /* -X means treat warnings as errors */ | |
657 | break; | |
6efd877d | 658 | } |
6efd877d | 659 | } |
f3d817d8 DM |
660 | |
661 | free (shortopts); | |
662 | free (longopts); | |
663 | ||
664 | *pargc = new_argc; | |
665 | *pargv = new_argv; | |
ebd6f117 DM |
666 | } |
667 | ||
c7a89bde ILT |
668 | static long start_time; |
669 | ||
ebd6f117 DM |
670 | int |
671 | main (argc, argv) | |
672 | int argc; | |
673 | char **argv; | |
674 | { | |
c7a89bde ILT |
675 | int macro_alternate; |
676 | int macro_strip_at; | |
ebd6f117 | 677 | int keep_it; |
c7a89bde ILT |
678 | |
679 | start_time = get_run_time (); | |
680 | ||
efec4a28 | 681 | |
c7a89bde ILT |
682 | if (debug_memory) |
683 | { | |
684 | #ifdef BFD_ASSEMBLER | |
685 | extern long _bfd_chunksize; | |
686 | _bfd_chunksize = 64; | |
687 | #endif | |
688 | chunksize = 64; | |
689 | } | |
ebd6f117 | 690 | |
a2a1a548 ILT |
691 | #ifdef HOST_SPECIAL_INIT |
692 | HOST_SPECIAL_INIT (argc, argv); | |
693 | #endif | |
460531da | 694 | |
ebd6f117 | 695 | myname = argv[0]; |
d2a0c9f9 KR |
696 | xmalloc_set_program_name (myname); |
697 | ||
87e48495 KR |
698 | START_PROGRESS (myname, 0); |
699 | ||
ebd6f117 DM |
700 | #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME |
701 | #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out" | |
702 | #endif | |
d2a0c9f9 | 703 | |
ebd6f117 DM |
704 | out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME; |
705 | ||
4761bb02 | 706 | hex_init (); |
ebd6f117 DM |
707 | #ifdef BFD_ASSEMBLER |
708 | bfd_init (); | |
8095b665 | 709 | bfd_set_error_program_name (myname); |
ebd6f117 DM |
710 | #endif |
711 | ||
4761bb02 KR |
712 | #ifdef USE_EMULATIONS |
713 | select_emulation_mode (argc, argv); | |
714 | #endif | |
715 | ||
87e48495 | 716 | PROGRESS (1); |
ebd6f117 | 717 | symbol_begin (); |
87e48495 | 718 | frag_init (); |
ebd6f117 | 719 | subsegs_begin (); |
efec4a28 | 720 | parse_args (&argc, &argv); |
c7a89bde | 721 | read_begin (); |
7e047ac2 ILT |
722 | input_scrub_begin (); |
723 | expr_begin (); | |
c7a89bde ILT |
724 | |
725 | if (flag_print_statistics) | |
726 | xatexit (dump_statistics); | |
727 | ||
728 | macro_alternate = 0; | |
729 | macro_strip_at = 0; | |
730 | #ifdef TC_I960 | |
731 | macro_strip_at = flag_mri; | |
732 | #endif | |
733 | #ifdef TC_A29K | |
734 | /* For compatibility with the AMD 29K family macro assembler | |
735 | specification. */ | |
736 | macro_alternate = 1; | |
737 | macro_strip_at = 1; | |
738 | #endif | |
739 | ||
740 | macro_init (macro_alternate, flag_mri, macro_strip_at, macro_expr); | |
67f3dd71 | 741 | |
87e48495 KR |
742 | PROGRESS (1); |
743 | ||
67f3dd71 KR |
744 | #ifdef BFD_ASSEMBLER |
745 | output_file_create (out_file_name); | |
746 | assert (stdoutput != 0); | |
fecd2382 | 747 | #endif |
67f3dd71 | 748 | |
ebd6f117 DM |
749 | #ifdef tc_init_after_args |
750 | tc_init_after_args (); | |
751 | #endif | |
752 | ||
efec4a28 DP |
753 | itbl_init (); |
754 | ||
bfc94743 ILT |
755 | /* Now that we have fully initialized, and have created the output |
756 | file, define any symbols requested by --defsym command line | |
757 | arguments. */ | |
758 | while (defsyms != NULL) | |
759 | { | |
760 | symbolS *sym; | |
761 | struct defsym_list *next; | |
762 | ||
763 | sym = symbol_new (defsyms->name, absolute_section, defsyms->value, | |
764 | &zero_address_frag); | |
765 | symbol_table_insert (sym); | |
766 | next = defsyms->next; | |
767 | free (defsyms); | |
768 | defsyms = next; | |
769 | } | |
770 | ||
87e48495 KR |
771 | PROGRESS (1); |
772 | ||
6efd877d | 773 | perform_an_assembly_pass (argc, argv); /* Assemble it. */ |
c7a89bde | 774 | |
0239838b ILT |
775 | cond_finish_check (-1); |
776 | ||
c7a89bde ILT |
777 | #ifdef md_end |
778 | md_end (); | |
fb870b50 | 779 | #endif |
8b13fa4e | 780 | |
6efd877d | 781 | if (seen_at_least_1_file () |
efec4a28 | 782 | && (flag_always_generate_output || had_errors () == 0)) |
398527f2 | 783 | keep_it = 1; |
f5200318 | 784 | else |
398527f2 KR |
785 | keep_it = 0; |
786 | ||
c3b27a64 RH |
787 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
788 | /* This used to be done at the start of write_object_file in | |
789 | write.c, but that caused problems when doing listings when | |
790 | keep_it was zero. This could probably be moved above md_end, but | |
791 | I didn't want to risk the change. */ | |
792 | subsegs_finish (); | |
793 | #endif | |
794 | ||
398527f2 KR |
795 | if (keep_it) |
796 | write_object_file (); | |
797 | ||
798 | #ifndef NO_LISTING | |
85a961c6 | 799 | listing_print (listing_filename); |
f5200318 | 800 | #endif |
6efd877d | 801 | |
ebd6f117 | 802 | #ifndef OBJ_VMS /* does its own file handling */ |
398527f2 KR |
803 | #ifndef BFD_ASSEMBLER |
804 | if (keep_it) | |
805 | #endif | |
806 | output_file_close (out_file_name); | |
ebd6f117 | 807 | #endif |
398527f2 | 808 | |
efec4a28 DP |
809 | if (had_errors () > 0 && ! flag_always_generate_output) |
810 | keep_it = 0; | |
811 | ||
398527f2 KR |
812 | if (!keep_it) |
813 | unlink (out_file_name); | |
814 | ||
6efd877d | 815 | input_scrub_end (); |
6efd877d | 816 | |
87e48495 KR |
817 | END_PROGRESS (myname); |
818 | ||
c7a89bde ILT |
819 | /* Use xexit instead of return, because under VMS environments they |
820 | may not place the same interpretation on the value given. */ | |
efec4a28 | 821 | if (had_errors () > 0) |
c7a89bde | 822 | xexit (EXIT_FAILURE); |
cd924033 ILT |
823 | |
824 | /* Only generate dependency file if assembler was successful. */ | |
825 | print_dependencies (); | |
826 | ||
c7a89bde ILT |
827 | xexit (EXIT_SUCCESS); |
828 | } | |
829 | ||
830 | static void | |
831 | dump_statistics () | |
832 | { | |
833 | extern char **environ; | |
e63c594d | 834 | #ifdef HAVE_SBRK |
c7a89bde | 835 | char *lim = (char *) sbrk (0); |
e63c594d | 836 | #endif |
c7a89bde | 837 | long run_time = get_run_time () - start_time; |
ca7bd557 | 838 | |
c7a89bde ILT |
839 | fprintf (stderr, "%s: total time in assembly: %ld.%06ld\n", |
840 | myname, run_time / 1000000, run_time % 1000000); | |
e63c594d | 841 | #ifdef HAVE_SBRK |
c7a89bde ILT |
842 | fprintf (stderr, "%s: data size %ld\n", |
843 | myname, (long) (lim - (char *) &environ)); | |
e63c594d | 844 | #endif |
ca7bd557 | 845 | |
c7a89bde ILT |
846 | subsegs_print_statistics (stderr); |
847 | write_print_statistics (stderr); | |
848 | symbol_print_statistics (stderr); | |
849 | read_print_statistics (stderr); | |
850 | ||
851 | #ifdef tc_print_statistics | |
852 | tc_print_statistics (stderr); | |
853 | #endif | |
854 | #ifdef obj_print_statistics | |
855 | obj_print_statistics (stderr); | |
856 | #endif | |
d3038350 | 857 | } |
fecd2382 | 858 | \f |
6efd877d | 859 | |
fecd2382 RP |
860 | /* perform_an_assembly_pass() |
861 | * | |
862 | * Here to attempt 1 pass over each input file. | |
863 | * We scan argv[*] looking for filenames or exactly "" which is | |
864 | * shorthand for stdin. Any argv that is NULL is not a file-name. | |
865 | * We set need_pass_2 TRUE if, after this, we still have unresolved | |
866 | * expressions of the form (unknown value)+-(unknown value). | |
867 | * | |
868 | * Note the un*x semantics: there is only 1 logical input file, but it | |
869 | * may be a catenation of many 'physical' input files. | |
870 | */ | |
6efd877d KR |
871 | static void |
872 | perform_an_assembly_pass (argc, argv) | |
873 | int argc; | |
874 | char **argv; | |
fecd2382 | 875 | { |
6efd877d | 876 | int saw_a_file = 0; |
67f3dd71 KR |
877 | #ifdef BFD_ASSEMBLER |
878 | flagword applicable; | |
879 | #endif | |
880 | ||
6efd877d KR |
881 | need_pass_2 = 0; |
882 | ||
67f3dd71 | 883 | #ifndef BFD_ASSEMBLER |
5d9f0ecf | 884 | #ifdef MANY_SEGMENTS |
f5200318 KR |
885 | { |
886 | unsigned int i; | |
887 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
6efd877d | 888 | segment_info[i].fix_root = 0; |
f5200318 | 889 | } |
6efd877d | 890 | /* Create the three fixed ones */ |
6aba9d29 JL |
891 | { |
892 | segT seg; | |
893 | ||
ebd6f117 DM |
894 | #ifdef TE_APOLLO |
895 | seg = subseg_new (".wtext", 0); | |
896 | #else | |
6aba9d29 | 897 | seg = subseg_new (".text", 0); |
ebd6f117 | 898 | #endif |
6aba9d29 JL |
899 | assert (seg == SEG_E0); |
900 | seg = subseg_new (".data", 0); | |
901 | assert (seg == SEG_E1); | |
902 | seg = subseg_new (".bss", 0); | |
903 | assert (seg == SEG_E2); | |
ebd6f117 DM |
904 | #ifdef TE_APOLLO |
905 | create_target_segments (); | |
906 | #endif | |
6aba9d29 JL |
907 | } |
908 | ||
e6498b10 | 909 | #else /* not MANY_SEGMENTS */ |
6efd877d KR |
910 | text_fix_root = NULL; |
911 | data_fix_root = NULL; | |
912 | bss_fix_root = NULL; | |
e6498b10 | 913 | #endif /* not MANY_SEGMENTS */ |
67f3dd71 KR |
914 | #else /* BFD_ASSEMBLER */ |
915 | /* Create the standard sections, and those the assembler uses | |
916 | internally. */ | |
917 | text_section = subseg_new (".text", 0); | |
67f3dd71 | 918 | data_section = subseg_new (".data", 0); |
67f3dd71 | 919 | bss_section = subseg_new (".bss", 0); |
67f3dd71 KR |
920 | /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed |
921 | to have relocs, otherwise we don't find out in time. */ | |
922 | applicable = bfd_applicable_section_flags (stdoutput); | |
923 | bfd_set_section_flags (stdoutput, text_section, | |
924 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
925 | | SEC_CODE | SEC_READONLY)); | |
926 | /* @@ FIXME -- SEC_CODE seems to mean code only, rather than code possibly.*/ | |
927 | bfd_set_section_flags (stdoutput, data_section, | |
928 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)); | |
929 | bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC); | |
8b13fa4e | 930 | seg_info (bss_section)->bss = 1; |
67f3dd71 KR |
931 | subseg_new (BFD_ABS_SECTION_NAME, 0); |
932 | subseg_new (BFD_UND_SECTION_NAME, 0); | |
67f3dd71 | 933 | reg_section = subseg_new ("*GAS `reg' section*", 0); |
6aba9d29 | 934 | expr_section = subseg_new ("*GAS `expr' section*", 0); |
67f3dd71 | 935 | |
67f3dd71 | 936 | #endif /* BFD_ASSEMBLER */ |
e6498b10 | 937 | |
6aba9d29 JL |
938 | subseg_set (text_section, 0); |
939 | ||
f5200318 KR |
940 | /* This may add symbol table entries, which requires having an open BFD, |
941 | and sections already created, in BFD_ASSEMBLER mode. */ | |
942 | md_begin (); | |
943 | ||
0bd28bc4 ILT |
944 | #ifdef obj_begin |
945 | obj_begin (); | |
946 | #endif | |
947 | ||
6efd877d KR |
948 | argv++; /* skip argv[0] */ |
949 | argc--; /* skip argv[0] */ | |
950 | while (argc--) | |
951 | { | |
952 | if (*argv) | |
953 | { /* Is it a file-name argument? */ | |
87e48495 | 954 | PROGRESS (1); |
6efd877d KR |
955 | saw_a_file++; |
956 | /* argv->"" if stdin desired, else->filename */ | |
957 | read_a_source_file (*argv); | |
a39116f1 | 958 | } |
6efd877d KR |
959 | argv++; /* completed that argv */ |
960 | } | |
961 | if (!saw_a_file) | |
962 | read_a_source_file (""); | |
963 | } /* perform_an_assembly_pass() */ | |
fecd2382 | 964 | |
7e047ac2 ILT |
965 | /* The interface between the macro code and gas expression handling. */ |
966 | ||
967 | static int | |
968 | macro_expr (emsg, idx, in, val) | |
969 | const char *emsg; | |
970 | int idx; | |
971 | sb *in; | |
972 | int *val; | |
973 | { | |
974 | char *hold; | |
975 | expressionS ex; | |
976 | ||
977 | sb_terminate (in); | |
978 | ||
979 | hold = input_line_pointer; | |
980 | input_line_pointer = in->ptr + idx; | |
981 | expression (&ex); | |
982 | idx = input_line_pointer - in->ptr; | |
983 | input_line_pointer = hold; | |
984 | ||
985 | if (ex.X_op != O_constant) | |
986 | as_bad ("%s", emsg); | |
987 | ||
988 | *val = (int) ex.X_add_number; | |
989 | ||
990 | return idx; | |
991 | } | |
992 | ||
a39116f1 | 993 | /* end of as.c */ |