Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* as.c - GAS main program. |
ffd652c3 | 2 | Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 97, 1998 |
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\ |
ffd652c3 | 162 | --traditional-format Use same format as native assembler when possible\n\ |
ebd6f117 DM |
163 | --version print assembler version number and exit\n\ |
164 | -W suppress warnings\n\ | |
72797ffa | 165 | --itbl INSTTBL extend instruction set to include instructions\n\ |
efec4a28 | 166 | matching the specifications defined in file INSTTBL\n\ |
ebd6f117 | 167 | -w ignored\n\ |
baed44cd | 168 | -X ignored\n\ |
ebd6f117 | 169 | -Z generate object file even after errors\n"); |
7b7a88d0 RH |
170 | fprintf (stream, "\ |
171 | --listing-lhs-width set the width in words of the output data column of\n\ | |
172 | the listing\n\ | |
173 | --listing-lhs-width2 set the width in words of the continuation lines\n\ | |
174 | of the output data column; ignored if smaller than\n\ | |
175 | the width of the first line\n\ | |
176 | --listing-rhs-width set the max width in characters of the lines from\n\ | |
177 | the source file\n\ | |
178 | --listing-cont-lines set the maximum number of continuation lines used\n\ | |
179 | for the output data column of the listing\n"); | |
ebd6f117 | 180 | |
f3d817d8 | 181 | md_show_usage (stream); |
bfc94743 ILT |
182 | |
183 | fprintf (stream, "\nReport bugs to bug-gnu-utils@prep.ai.mit.edu\n"); | |
ebd6f117 DM |
184 | } |
185 | ||
4761bb02 KR |
186 | #ifdef USE_EMULATIONS |
187 | #define EMULATION_ENVIRON "AS_EMULATION" | |
188 | ||
189 | extern struct emulation mipsbelf, mipslelf, mipself; | |
190 | extern struct emulation mipsbecoff, mipslecoff, mipsecoff; | |
0239838b | 191 | extern struct emulation i386coff, i386elf; |
4761bb02 | 192 | |
4761bb02 KR |
193 | static struct emulation *const emulations[] = { EMULATIONS }; |
194 | static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]); | |
195 | ||
0239838b ILT |
196 | static void select_emulation_mode PARAMS ((int, char **)); |
197 | ||
4761bb02 KR |
198 | static void |
199 | select_emulation_mode (argc, argv) | |
200 | int argc; | |
201 | char **argv; | |
202 | { | |
203 | int i; | |
204 | char *p, *em = 0; | |
205 | ||
206 | for (i = 1; i < argc; i++) | |
207 | if (!strncmp ("--em", argv[i], 4)) | |
208 | break; | |
209 | ||
210 | if (i == argc) | |
211 | goto do_default; | |
212 | ||
213 | p = strchr (argv[i], '='); | |
214 | if (p) | |
215 | p++; | |
216 | else | |
217 | p = argv[i+1]; | |
218 | ||
219 | if (!p || !*p) | |
220 | as_fatal ("missing emulation mode name"); | |
221 | em = p; | |
222 | ||
223 | do_default: | |
224 | if (em == 0) | |
225 | em = getenv (EMULATION_ENVIRON); | |
226 | if (em == 0) | |
227 | em = DEFAULT_EMULATION; | |
228 | ||
229 | if (em) | |
230 | { | |
231 | for (i = 0; i < n_emulations; i++) | |
232 | if (!strcmp (emulations[i]->name, em)) | |
233 | break; | |
234 | if (i == n_emulations) | |
235 | as_fatal ("unrecognized emulation name `%s'", em); | |
236 | this_emulation = emulations[i]; | |
237 | } | |
238 | else | |
239 | this_emulation = emulations[0]; | |
240 | ||
241 | this_emulation->init (); | |
242 | } | |
243 | ||
244 | const char * | |
245 | default_emul_bfd_name () | |
246 | { | |
247 | abort (); | |
8095b665 | 248 | return NULL; |
4761bb02 KR |
249 | } |
250 | ||
251 | void | |
252 | common_emul_init () | |
253 | { | |
254 | this_format = this_emulation->format; | |
255 | ||
256 | if (this_emulation->leading_underscore == 2) | |
257 | this_emulation->leading_underscore = this_format->dfl_leading_underscore; | |
258 | ||
259 | if (this_emulation->default_endian != 2) | |
260 | target_big_endian = this_emulation->default_endian; | |
261 | ||
262 | if (this_emulation->fake_label_name == 0) | |
263 | { | |
264 | if (this_emulation->leading_underscore) | |
265 | this_emulation->fake_label_name = "L0\001"; | |
266 | else | |
267 | /* What other parameters should we test? */ | |
268 | this_emulation->fake_label_name = ".L0\001"; | |
269 | } | |
270 | } | |
271 | #endif | |
272 | ||
ebd6f117 | 273 | /* |
ebd6f117 DM |
274 | * Since it is easy to do here we interpret the special arg "-" |
275 | * to mean "use stdin" and we set that argv[] pointing to "". | |
276 | * After we have munged argv[], the only things left are source file | |
277 | * name(s) and ""(s) denoting stdin. These file names are used | |
278 | * (perhaps more than once) later. | |
f3d817d8 | 279 | * |
ebd6f117 DM |
280 | * check for new machine-dep cmdline options in |
281 | * md_parse_option definitions in config/tc-*.c | |
282 | */ | |
283 | ||
0239838b | 284 | static void |
f3d817d8 DM |
285 | parse_args (pargc, pargv) |
286 | int *pargc; | |
287 | char ***pargv; | |
ebd6f117 | 288 | { |
f3d817d8 DM |
289 | int old_argc, new_argc; |
290 | char **old_argv, **new_argv; | |
291 | ||
292 | /* Starting the short option string with '-' is for programs that | |
293 | expect options and other ARGV-elements in any order and that care about | |
294 | the ordering of the two. We describe each non-option ARGV-element | |
295 | as if it were the argument of an option with character code 1. */ | |
296 | ||
297 | char *shortopts; | |
298 | extern CONST char *md_shortopts; | |
a7aa7a2b ILT |
299 | static const char std_shortopts[] = |
300 | { | |
301 | '-', 'J', | |
302 | #ifndef WORKING_DOT_WORD | |
303 | /* -K is not meaningful if .word is not being hacked. */ | |
304 | 'K', | |
a2a1a548 | 305 | #endif |
7e047ac2 | 306 | 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':', |
a7aa7a2b ILT |
307 | #ifndef VMS |
308 | /* -v takes an argument on VMS, so we don't make it a generic | |
309 | option. */ | |
310 | 'v', | |
311 | #endif | |
312 | 'w', 'X', | |
9218cee0 | 313 | /* New option for extending instruction set (see also --itbl below) */ |
cd924033 | 314 | 't', ':', |
a7aa7a2b ILT |
315 | '\0' |
316 | }; | |
f3d817d8 DM |
317 | struct option *longopts; |
318 | extern struct option md_longopts[]; | |
319 | extern size_t md_longopts_size; | |
460531da | 320 | static const struct option std_longopts[] = { |
f3d817d8 DM |
321 | #define OPTION_HELP (OPTION_STD_BASE) |
322 | {"help", no_argument, NULL, OPTION_HELP}, | |
c3b27a64 | 323 | {"keep-locals", no_argument, NULL, 'L'}, |
7e047ac2 | 324 | {"mri", no_argument, NULL, 'M'}, |
f3d817d8 DM |
325 | #define OPTION_NOCPP (OPTION_STD_BASE + 1) |
326 | {"nocpp", no_argument, NULL, OPTION_NOCPP}, | |
327 | #define OPTION_STATISTICS (OPTION_STD_BASE + 2) | |
328 | {"statistics", no_argument, NULL, OPTION_STATISTICS}, | |
329 | #define OPTION_VERSION (OPTION_STD_BASE + 3) | |
330 | {"version", no_argument, NULL, OPTION_VERSION}, | |
460531da KR |
331 | #define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4) |
332 | {"dump-config", no_argument, NULL, OPTION_DUMPCONFIG}, | |
fb870b50 MT |
333 | #define OPTION_VERBOSE (OPTION_STD_BASE + 5) |
334 | {"verbose", no_argument, NULL, OPTION_VERBOSE}, | |
4761bb02 KR |
335 | #define OPTION_EMULATION (OPTION_STD_BASE + 6) |
336 | {"emulation", required_argument, NULL, OPTION_EMULATION}, | |
c7a89bde | 337 | #define OPTION_DEFSYM (OPTION_STD_BASE + 7) |
efec4a28 DP |
338 | {"defsym", required_argument, NULL, OPTION_DEFSYM}, |
339 | #define OPTION_INSTTBL (OPTION_STD_BASE + 8) | |
340 | /* New option for extending instruction set (see also -t above). | |
9218cee0 ILT |
341 | The "-t file" or "--itbl file" option extends the basic set of |
342 | valid instructions by reading "file", a text file containing a | |
343 | list of instruction formats. The additional opcodes and their | |
344 | formats are added to the built-in set of instructions, and | |
345 | mnemonics for new registers may also be defined. */ | |
cd924033 | 346 | {"itbl", required_argument, NULL, OPTION_INSTTBL}, |
7b7a88d0 RH |
347 | #define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9) |
348 | {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH}, | |
349 | #define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10) | |
350 | {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2}, | |
351 | #define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11) | |
352 | {"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH}, | |
353 | #define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12) | |
354 | {"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES}, | |
355 | #define OPTION_DEPFILE (OPTION_STD_BASE + 13) | |
cd924033 | 356 | {"MD", required_argument, NULL, OPTION_DEPFILE}, |
7b7a88d0 | 357 | #define OPTION_GSTABS (OPTION_STD_BASE + 14) |
c3b27a64 | 358 | {"gstabs", no_argument, NULL, OPTION_GSTABS}, |
7b7a88d0 | 359 | #define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15) |
ffd652c3 ILT |
360 | {"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE}, |
361 | #define OPTION_TRADITIONAL_FORMAT (OPTION_STD_BASE + 16) | |
362 | {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT} | |
f3d817d8 DM |
363 | }; |
364 | ||
365 | /* Construct the option lists from the standard list and the | |
366 | target dependent list. */ | |
367 | shortopts = concat (std_shortopts, md_shortopts, (char *) NULL); | |
a2a1a548 | 368 | longopts = (struct option *) xmalloc (sizeof (std_longopts) + md_longopts_size); |
f3d817d8 DM |
369 | memcpy (longopts, std_longopts, sizeof (std_longopts)); |
370 | memcpy ((char *) longopts + sizeof (std_longopts), | |
371 | md_longopts, md_longopts_size); | |
372 | ||
373 | /* Make a local copy of the old argv. */ | |
374 | old_argc = *pargc; | |
375 | old_argv = *pargv; | |
376 | ||
377 | /* Initialize a new argv that contains no options. */ | |
378 | new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1)); | |
379 | new_argv[0] = old_argv[0]; | |
380 | new_argc = 1; | |
381 | new_argv[new_argc] = NULL; | |
382 | ||
383 | while (1) | |
6efd877d | 384 | { |
f3d817d8 DM |
385 | /* getopt_long_only is like getopt_long, but '-' as well as '--' can |
386 | indicate a long option. */ | |
387 | int longind; | |
388 | int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts, | |
389 | &longind); | |
ebd6f117 | 390 | |
f3d817d8 DM |
391 | if (optc == -1) |
392 | break; | |
6efd877d | 393 | |
f3d817d8 DM |
394 | switch (optc) |
395 | { | |
396 | default: | |
397 | /* md_parse_option should return 1 if it recognizes optc, | |
398 | 0 if not. */ | |
fb870b50 MT |
399 | if (md_parse_option (optc, optarg) != 0) |
400 | break; | |
401 | /* `-v' isn't included in the general short_opts list, so check for | |
402 | it explicity here before deciding we've gotten a bad argument. */ | |
403 | if (optc == 'v') | |
404 | { | |
405 | #ifdef VMS | |
406 | /* Telling getopt to treat -v's value as optional can result | |
407 | in it picking up a following filename argument here. The | |
408 | VMS code in md_parse_option can return 0 in that case, | |
409 | but it has no way of pushing the filename argument back. */ | |
410 | if (optarg && *optarg) | |
411 | new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL; | |
412 | else | |
413 | #else | |
414 | case 'v': | |
415 | #endif | |
416 | case OPTION_VERBOSE: | |
417 | print_version_id (); | |
418 | break; | |
419 | } | |
420 | /*FALLTHRU*/ | |
f3d817d8 DM |
421 | |
422 | case '?': | |
423 | exit (EXIT_FAILURE); | |
424 | ||
425 | case 1: /* File name. */ | |
426 | if (!strcmp (optarg, "-")) | |
427 | optarg = ""; | |
428 | new_argv[new_argc++] = optarg; | |
429 | new_argv[new_argc] = NULL; | |
430 | break; | |
431 | ||
432 | case OPTION_HELP: | |
433 | show_usage (stdout); | |
460531da | 434 | exit (EXIT_SUCCESS); |
f3d817d8 DM |
435 | |
436 | case OPTION_NOCPP: | |
437 | break; | |
438 | ||
439 | case OPTION_STATISTICS: | |
460531da | 440 | flag_print_statistics = 1; |
f3d817d8 DM |
441 | break; |
442 | ||
c3b27a64 RH |
443 | case OPTION_STRIP_LOCAL_ABSOLUTE: |
444 | flag_strip_local_absolute = 1; | |
445 | break; | |
446 | ||
ffd652c3 ILT |
447 | case OPTION_TRADITIONAL_FORMAT: |
448 | flag_traditional_format = 1; | |
449 | break; | |
450 | ||
f3d817d8 | 451 | case OPTION_VERSION: |
bfc94743 | 452 | /* This output is intended to follow the GNU standards document. */ |
cd924033 | 453 | printf ("GNU assembler %s\n", VERSION); |
0239838b | 454 | printf ("Copyright 1997 Free Software Foundation, Inc.\n"); |
bfc94743 ILT |
455 | printf ("\ |
456 | This program is free software; you may redistribute it under the terms of\n\ | |
457 | the GNU General Public License. This program has absolutely no warranty.\n"); | |
458 | printf ("This assembler was configured for a target of `%s'.\n", | |
459 | TARGET_ALIAS); | |
460531da KR |
460 | exit (EXIT_SUCCESS); |
461 | ||
4761bb02 | 462 | case OPTION_EMULATION: |
e63c594d | 463 | #ifdef USE_EMULATIONS |
4761bb02 KR |
464 | if (strcmp (optarg, this_emulation->name)) |
465 | as_fatal ("multiple emulation names specified"); | |
e63c594d FF |
466 | #else |
467 | as_fatal ("emulations not handled in this configuration"); | |
468 | #endif | |
4761bb02 KR |
469 | break; |
470 | ||
460531da KR |
471 | case OPTION_DUMPCONFIG: |
472 | fprintf (stderr, "alias = %s\n", TARGET_ALIAS); | |
473 | fprintf (stderr, "canonical = %s\n", TARGET_CANONICAL); | |
474 | fprintf (stderr, "cpu-type = %s\n", TARGET_CPU); | |
475 | #ifdef TARGET_OBJ_FORMAT | |
476 | fprintf (stderr, "format = %s\n", TARGET_OBJ_FORMAT); | |
477 | #endif | |
478 | #ifdef TARGET_FORMAT | |
479 | fprintf (stderr, "bfd-target = %s\n", TARGET_FORMAT); | |
480 | #endif | |
481 | exit (EXIT_SUCCESS); | |
f3d817d8 | 482 | |
c7a89bde ILT |
483 | case OPTION_DEFSYM: |
484 | { | |
485 | char *s; | |
486 | long i; | |
bfc94743 | 487 | struct defsym_list *n; |
c7a89bde ILT |
488 | |
489 | for (s = optarg; *s != '\0' && *s != '='; s++) | |
490 | ; | |
491 | if (*s == '\0') | |
492 | as_fatal ("bad defsym; format is --defsym name=value"); | |
493 | *s++ = '\0'; | |
494 | i = strtol (s, (char **) NULL, 0); | |
bfc94743 ILT |
495 | n = (struct defsym_list *) xmalloc (sizeof *n); |
496 | n->next = defsyms; | |
497 | n->name = optarg; | |
498 | n->value = i; | |
499 | defsyms = n; | |
c7a89bde ILT |
500 | } |
501 | break; | |
502 | ||
efec4a28 DP |
503 | case OPTION_INSTTBL: |
504 | case 't': | |
505 | { | |
506 | /* optarg is the name of the file containing the instruction | |
507 | formats, opcodes, register names, etc. */ | |
508 | struct itbl_file_list *n; | |
509 | ||
cd924033 ILT |
510 | if (optarg == NULL) |
511 | { | |
512 | as_warn ( "No file name following -t option\n" ); | |
513 | break; | |
514 | } | |
515 | ||
efec4a28 DP |
516 | n = (struct itbl_file_list *) xmalloc (sizeof *n); |
517 | n->next = itbl_files; | |
518 | n->name = optarg; | |
519 | itbl_files = n; | |
520 | ||
521 | /* Parse the file and add the new instructions to our internal | |
522 | table. If multiple instruction tables are specified, the | |
523 | information from this table gets appended onto the existing | |
524 | internal table. */ | |
525 | itbl_files->name = xstrdup (optarg); | |
9218cee0 ILT |
526 | if (itbl_parse (itbl_files->name) != 0) |
527 | { | |
528 | fprintf (stderr, "Failed to read instruction table %s\n", | |
529 | itbl_files->name); | |
530 | exit (EXIT_SUCCESS); | |
531 | } | |
efec4a28 DP |
532 | } |
533 | break; | |
534 | ||
cd924033 ILT |
535 | case OPTION_DEPFILE: |
536 | start_dependencies (optarg); | |
537 | break; | |
538 | ||
539 | case OPTION_GSTABS: | |
540 | debug_type = DEBUG_STABS; | |
541 | break; | |
70120718 | 542 | |
f3d817d8 | 543 | case 'J': |
def66e24 DM |
544 | flag_signed_overflow_ok = 1; |
545 | break; | |
546 | ||
a7aa7a2b | 547 | #ifndef WORKING_DOT_WORD |
f3d817d8 | 548 | case 'K': |
def66e24 DM |
549 | flag_warn_displacement = 1; |
550 | break; | |
a7aa7a2b | 551 | #endif |
def66e24 | 552 | |
f3d817d8 | 553 | case 'L': |
def66e24 DM |
554 | flag_keep_locals = 1; |
555 | break; | |
556 | ||
7b7a88d0 RH |
557 | case OPTION_LISTING_LHS_WIDTH: |
558 | listing_lhs_width = atoi(optarg); | |
559 | if (listing_lhs_width_second < listing_lhs_width) | |
560 | listing_lhs_width_second = listing_lhs_width; | |
561 | break; | |
562 | case OPTION_LISTING_LHS_WIDTH2: | |
563 | { | |
564 | int tmp = atoi(optarg); | |
565 | if (tmp > listing_lhs_width) | |
566 | listing_lhs_width_second = tmp; | |
567 | } | |
568 | break; | |
569 | case OPTION_LISTING_RHS_WIDTH: | |
570 | listing_rhs_width = atoi(optarg); | |
571 | break; | |
572 | case OPTION_LISTING_CONT_LINES: | |
573 | listing_lhs_cont_lines = atoi(optarg); | |
574 | break; | |
575 | ||
7e047ac2 ILT |
576 | case 'M': |
577 | flag_mri = 1; | |
c7a89bde ILT |
578 | #ifdef TC_M68K |
579 | flag_m68k_mri = 1; | |
580 | #endif | |
7e047ac2 ILT |
581 | break; |
582 | ||
f3d817d8 | 583 | case 'R': |
def66e24 DM |
584 | flag_readonly_data_in_text = 1; |
585 | break; | |
586 | ||
f3d817d8 | 587 | case 'W': |
def66e24 DM |
588 | flag_no_warnings = 1; |
589 | break; | |
590 | ||
f3d817d8 | 591 | case 'Z': |
def66e24 | 592 | flag_always_generate_output = 1; |
f3d817d8 DM |
593 | break; |
594 | ||
595 | case 'a': | |
596 | if (optarg) | |
6efd877d | 597 | { |
f3d817d8 | 598 | while (*optarg) |
d3038350 | 599 | { |
f3d817d8 DM |
600 | switch (*optarg) |
601 | { | |
0239838b ILT |
602 | case 'c': |
603 | listing |= LISTING_NOCOND; | |
604 | break; | |
f3d817d8 DM |
605 | case 'd': |
606 | listing |= LISTING_NODEBUG; | |
607 | break; | |
608 | case 'h': | |
609 | listing |= LISTING_HLL; | |
610 | break; | |
611 | case 'l': | |
612 | listing |= LISTING_LISTING; | |
613 | break; | |
c3b27a64 RH |
614 | case 'm': |
615 | listing |= LISTING_MACEXP; | |
616 | break; | |
f3d817d8 DM |
617 | case 'n': |
618 | listing |= LISTING_NOFORM; | |
619 | break; | |
620 | case 's': | |
621 | listing |= LISTING_SYMBOLS; | |
622 | break; | |
85a961c6 | 623 | case '=': |
c7a89bde | 624 | listing_filename = xstrdup (optarg + 1); |
85a961c6 ILT |
625 | optarg += strlen (listing_filename); |
626 | break; | |
f3d817d8 | 627 | default: |
460531da | 628 | as_fatal ("invalid listing option `%c'", *optarg); |
f3d817d8 DM |
629 | break; |
630 | } | |
631 | optarg++; | |
d3038350 | 632 | } |
6efd877d | 633 | } |
f3d817d8 DM |
634 | if (!listing) |
635 | listing = LISTING_DEFAULT; | |
636 | break; | |
637 | ||
638 | case 'D': | |
639 | /* DEBUG is implemented: it debugs different */ | |
baed44cd | 640 | /* things from other people's assemblers. */ |
def66e24 DM |
641 | flag_debug = 1; |
642 | break; | |
643 | ||
644 | case 'f': | |
645 | flag_no_comments = 1; | |
f3d817d8 DM |
646 | break; |
647 | ||
648 | case 'I': | |
649 | { /* Include file directory */ | |
c7a89bde | 650 | char *temp = xstrdup (optarg); |
f3d817d8 DM |
651 | add_include_dir (temp); |
652 | break; | |
653 | } | |
654 | ||
655 | case 'o': | |
c7a89bde | 656 | out_file_name = xstrdup (optarg); |
f3d817d8 DM |
657 | break; |
658 | ||
f3d817d8 DM |
659 | case 'w': |
660 | break; | |
661 | ||
662 | case 'X': | |
663 | /* -X means treat warnings as errors */ | |
664 | break; | |
6efd877d | 665 | } |
6efd877d | 666 | } |
f3d817d8 DM |
667 | |
668 | free (shortopts); | |
669 | free (longopts); | |
670 | ||
671 | *pargc = new_argc; | |
672 | *pargv = new_argv; | |
ebd6f117 DM |
673 | } |
674 | ||
c7a89bde ILT |
675 | static long start_time; |
676 | ||
ebd6f117 DM |
677 | int |
678 | main (argc, argv) | |
679 | int argc; | |
680 | char **argv; | |
681 | { | |
c7a89bde ILT |
682 | int macro_alternate; |
683 | int macro_strip_at; | |
ebd6f117 | 684 | int keep_it; |
c7a89bde ILT |
685 | |
686 | start_time = get_run_time (); | |
687 | ||
efec4a28 | 688 | |
c7a89bde ILT |
689 | if (debug_memory) |
690 | { | |
691 | #ifdef BFD_ASSEMBLER | |
692 | extern long _bfd_chunksize; | |
693 | _bfd_chunksize = 64; | |
694 | #endif | |
695 | chunksize = 64; | |
696 | } | |
ebd6f117 | 697 | |
a2a1a548 ILT |
698 | #ifdef HOST_SPECIAL_INIT |
699 | HOST_SPECIAL_INIT (argc, argv); | |
700 | #endif | |
460531da | 701 | |
ebd6f117 | 702 | myname = argv[0]; |
d2a0c9f9 KR |
703 | xmalloc_set_program_name (myname); |
704 | ||
87e48495 KR |
705 | START_PROGRESS (myname, 0); |
706 | ||
ebd6f117 DM |
707 | #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME |
708 | #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out" | |
709 | #endif | |
d2a0c9f9 | 710 | |
ebd6f117 DM |
711 | out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME; |
712 | ||
4761bb02 | 713 | hex_init (); |
ebd6f117 DM |
714 | #ifdef BFD_ASSEMBLER |
715 | bfd_init (); | |
8095b665 | 716 | bfd_set_error_program_name (myname); |
ebd6f117 DM |
717 | #endif |
718 | ||
4761bb02 KR |
719 | #ifdef USE_EMULATIONS |
720 | select_emulation_mode (argc, argv); | |
721 | #endif | |
722 | ||
87e48495 | 723 | PROGRESS (1); |
ebd6f117 | 724 | symbol_begin (); |
87e48495 | 725 | frag_init (); |
ebd6f117 | 726 | subsegs_begin (); |
efec4a28 | 727 | parse_args (&argc, &argv); |
c7a89bde | 728 | read_begin (); |
7e047ac2 ILT |
729 | input_scrub_begin (); |
730 | expr_begin (); | |
c7a89bde ILT |
731 | |
732 | if (flag_print_statistics) | |
733 | xatexit (dump_statistics); | |
734 | ||
735 | macro_alternate = 0; | |
736 | macro_strip_at = 0; | |
737 | #ifdef TC_I960 | |
738 | macro_strip_at = flag_mri; | |
739 | #endif | |
740 | #ifdef TC_A29K | |
741 | /* For compatibility with the AMD 29K family macro assembler | |
742 | specification. */ | |
743 | macro_alternate = 1; | |
744 | macro_strip_at = 1; | |
745 | #endif | |
746 | ||
747 | macro_init (macro_alternate, flag_mri, macro_strip_at, macro_expr); | |
67f3dd71 | 748 | |
87e48495 KR |
749 | PROGRESS (1); |
750 | ||
67f3dd71 KR |
751 | #ifdef BFD_ASSEMBLER |
752 | output_file_create (out_file_name); | |
753 | assert (stdoutput != 0); | |
fecd2382 | 754 | #endif |
67f3dd71 | 755 | |
ebd6f117 DM |
756 | #ifdef tc_init_after_args |
757 | tc_init_after_args (); | |
758 | #endif | |
759 | ||
efec4a28 DP |
760 | itbl_init (); |
761 | ||
bfc94743 ILT |
762 | /* Now that we have fully initialized, and have created the output |
763 | file, define any symbols requested by --defsym command line | |
764 | arguments. */ | |
765 | while (defsyms != NULL) | |
766 | { | |
767 | symbolS *sym; | |
768 | struct defsym_list *next; | |
769 | ||
770 | sym = symbol_new (defsyms->name, absolute_section, defsyms->value, | |
771 | &zero_address_frag); | |
772 | symbol_table_insert (sym); | |
773 | next = defsyms->next; | |
774 | free (defsyms); | |
775 | defsyms = next; | |
776 | } | |
777 | ||
87e48495 KR |
778 | PROGRESS (1); |
779 | ||
6efd877d | 780 | perform_an_assembly_pass (argc, argv); /* Assemble it. */ |
c7a89bde | 781 | |
0239838b ILT |
782 | cond_finish_check (-1); |
783 | ||
c7a89bde ILT |
784 | #ifdef md_end |
785 | md_end (); | |
fb870b50 | 786 | #endif |
8b13fa4e | 787 | |
6efd877d | 788 | if (seen_at_least_1_file () |
efec4a28 | 789 | && (flag_always_generate_output || had_errors () == 0)) |
398527f2 | 790 | keep_it = 1; |
f5200318 | 791 | else |
398527f2 KR |
792 | keep_it = 0; |
793 | ||
c3b27a64 RH |
794 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
795 | /* This used to be done at the start of write_object_file in | |
796 | write.c, but that caused problems when doing listings when | |
797 | keep_it was zero. This could probably be moved above md_end, but | |
798 | I didn't want to risk the change. */ | |
799 | subsegs_finish (); | |
800 | #endif | |
801 | ||
398527f2 KR |
802 | if (keep_it) |
803 | write_object_file (); | |
804 | ||
805 | #ifndef NO_LISTING | |
85a961c6 | 806 | listing_print (listing_filename); |
f5200318 | 807 | #endif |
6efd877d | 808 | |
ebd6f117 | 809 | #ifndef OBJ_VMS /* does its own file handling */ |
398527f2 KR |
810 | #ifndef BFD_ASSEMBLER |
811 | if (keep_it) | |
812 | #endif | |
813 | output_file_close (out_file_name); | |
ebd6f117 | 814 | #endif |
398527f2 | 815 | |
efec4a28 DP |
816 | if (had_errors () > 0 && ! flag_always_generate_output) |
817 | keep_it = 0; | |
818 | ||
398527f2 KR |
819 | if (!keep_it) |
820 | unlink (out_file_name); | |
821 | ||
6efd877d | 822 | input_scrub_end (); |
6efd877d | 823 | |
87e48495 KR |
824 | END_PROGRESS (myname); |
825 | ||
c7a89bde ILT |
826 | /* Use xexit instead of return, because under VMS environments they |
827 | may not place the same interpretation on the value given. */ | |
efec4a28 | 828 | if (had_errors () > 0) |
c7a89bde | 829 | xexit (EXIT_FAILURE); |
cd924033 ILT |
830 | |
831 | /* Only generate dependency file if assembler was successful. */ | |
832 | print_dependencies (); | |
833 | ||
c7a89bde ILT |
834 | xexit (EXIT_SUCCESS); |
835 | } | |
836 | ||
837 | static void | |
838 | dump_statistics () | |
839 | { | |
840 | extern char **environ; | |
e63c594d | 841 | #ifdef HAVE_SBRK |
c7a89bde | 842 | char *lim = (char *) sbrk (0); |
e63c594d | 843 | #endif |
c7a89bde | 844 | long run_time = get_run_time () - start_time; |
ca7bd557 | 845 | |
c7a89bde ILT |
846 | fprintf (stderr, "%s: total time in assembly: %ld.%06ld\n", |
847 | myname, run_time / 1000000, run_time % 1000000); | |
e63c594d | 848 | #ifdef HAVE_SBRK |
c7a89bde ILT |
849 | fprintf (stderr, "%s: data size %ld\n", |
850 | myname, (long) (lim - (char *) &environ)); | |
e63c594d | 851 | #endif |
ca7bd557 | 852 | |
c7a89bde ILT |
853 | subsegs_print_statistics (stderr); |
854 | write_print_statistics (stderr); | |
855 | symbol_print_statistics (stderr); | |
856 | read_print_statistics (stderr); | |
857 | ||
858 | #ifdef tc_print_statistics | |
859 | tc_print_statistics (stderr); | |
860 | #endif | |
861 | #ifdef obj_print_statistics | |
862 | obj_print_statistics (stderr); | |
863 | #endif | |
d3038350 | 864 | } |
fecd2382 | 865 | \f |
6efd877d | 866 | |
fecd2382 RP |
867 | /* perform_an_assembly_pass() |
868 | * | |
869 | * Here to attempt 1 pass over each input file. | |
870 | * We scan argv[*] looking for filenames or exactly "" which is | |
871 | * shorthand for stdin. Any argv that is NULL is not a file-name. | |
872 | * We set need_pass_2 TRUE if, after this, we still have unresolved | |
873 | * expressions of the form (unknown value)+-(unknown value). | |
874 | * | |
875 | * Note the un*x semantics: there is only 1 logical input file, but it | |
876 | * may be a catenation of many 'physical' input files. | |
877 | */ | |
6efd877d KR |
878 | static void |
879 | perform_an_assembly_pass (argc, argv) | |
880 | int argc; | |
881 | char **argv; | |
fecd2382 | 882 | { |
6efd877d | 883 | int saw_a_file = 0; |
67f3dd71 KR |
884 | #ifdef BFD_ASSEMBLER |
885 | flagword applicable; | |
886 | #endif | |
887 | ||
6efd877d KR |
888 | need_pass_2 = 0; |
889 | ||
67f3dd71 | 890 | #ifndef BFD_ASSEMBLER |
5d9f0ecf | 891 | #ifdef MANY_SEGMENTS |
f5200318 KR |
892 | { |
893 | unsigned int i; | |
894 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
6efd877d | 895 | segment_info[i].fix_root = 0; |
f5200318 | 896 | } |
6efd877d | 897 | /* Create the three fixed ones */ |
6aba9d29 JL |
898 | { |
899 | segT seg; | |
900 | ||
ebd6f117 DM |
901 | #ifdef TE_APOLLO |
902 | seg = subseg_new (".wtext", 0); | |
903 | #else | |
6aba9d29 | 904 | seg = subseg_new (".text", 0); |
ebd6f117 | 905 | #endif |
6aba9d29 JL |
906 | assert (seg == SEG_E0); |
907 | seg = subseg_new (".data", 0); | |
908 | assert (seg == SEG_E1); | |
909 | seg = subseg_new (".bss", 0); | |
910 | assert (seg == SEG_E2); | |
ebd6f117 DM |
911 | #ifdef TE_APOLLO |
912 | create_target_segments (); | |
913 | #endif | |
6aba9d29 JL |
914 | } |
915 | ||
e6498b10 | 916 | #else /* not MANY_SEGMENTS */ |
6efd877d KR |
917 | text_fix_root = NULL; |
918 | data_fix_root = NULL; | |
919 | bss_fix_root = NULL; | |
e6498b10 | 920 | #endif /* not MANY_SEGMENTS */ |
67f3dd71 KR |
921 | #else /* BFD_ASSEMBLER */ |
922 | /* Create the standard sections, and those the assembler uses | |
923 | internally. */ | |
924 | text_section = subseg_new (".text", 0); | |
67f3dd71 | 925 | data_section = subseg_new (".data", 0); |
67f3dd71 | 926 | bss_section = subseg_new (".bss", 0); |
67f3dd71 KR |
927 | /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed |
928 | to have relocs, otherwise we don't find out in time. */ | |
929 | applicable = bfd_applicable_section_flags (stdoutput); | |
930 | bfd_set_section_flags (stdoutput, text_section, | |
931 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
932 | | SEC_CODE | SEC_READONLY)); | |
933 | /* @@ FIXME -- SEC_CODE seems to mean code only, rather than code possibly.*/ | |
934 | bfd_set_section_flags (stdoutput, data_section, | |
935 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC)); | |
936 | bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC); | |
8b13fa4e | 937 | seg_info (bss_section)->bss = 1; |
67f3dd71 KR |
938 | subseg_new (BFD_ABS_SECTION_NAME, 0); |
939 | subseg_new (BFD_UND_SECTION_NAME, 0); | |
67f3dd71 | 940 | reg_section = subseg_new ("*GAS `reg' section*", 0); |
6aba9d29 | 941 | expr_section = subseg_new ("*GAS `expr' section*", 0); |
67f3dd71 | 942 | |
67f3dd71 | 943 | #endif /* BFD_ASSEMBLER */ |
e6498b10 | 944 | |
6aba9d29 JL |
945 | subseg_set (text_section, 0); |
946 | ||
f5200318 KR |
947 | /* This may add symbol table entries, which requires having an open BFD, |
948 | and sections already created, in BFD_ASSEMBLER mode. */ | |
949 | md_begin (); | |
950 | ||
0bd28bc4 ILT |
951 | #ifdef obj_begin |
952 | obj_begin (); | |
953 | #endif | |
954 | ||
6efd877d KR |
955 | argv++; /* skip argv[0] */ |
956 | argc--; /* skip argv[0] */ | |
957 | while (argc--) | |
958 | { | |
959 | if (*argv) | |
960 | { /* Is it a file-name argument? */ | |
87e48495 | 961 | PROGRESS (1); |
6efd877d KR |
962 | saw_a_file++; |
963 | /* argv->"" if stdin desired, else->filename */ | |
964 | read_a_source_file (*argv); | |
a39116f1 | 965 | } |
6efd877d KR |
966 | argv++; /* completed that argv */ |
967 | } | |
968 | if (!saw_a_file) | |
969 | read_a_source_file (""); | |
970 | } /* perform_an_assembly_pass() */ | |
fecd2382 | 971 | |
7e047ac2 ILT |
972 | /* The interface between the macro code and gas expression handling. */ |
973 | ||
974 | static int | |
975 | macro_expr (emsg, idx, in, val) | |
976 | const char *emsg; | |
977 | int idx; | |
978 | sb *in; | |
979 | int *val; | |
980 | { | |
981 | char *hold; | |
982 | expressionS ex; | |
983 | ||
984 | sb_terminate (in); | |
985 | ||
986 | hold = input_line_pointer; | |
987 | input_line_pointer = in->ptr + idx; | |
988 | expression (&ex); | |
989 | idx = input_line_pointer - in->ptr; | |
990 | input_line_pointer = hold; | |
991 | ||
992 | if (ex.X_op != O_constant) | |
993 | as_bad ("%s", emsg); | |
994 | ||
995 | *val = (int) ex.X_add_number; | |
996 | ||
997 | return idx; | |
998 | } | |
999 | ||
a39116f1 | 1000 | /* end of as.c */ |