?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge commit 'cyr/hpa-list'
[nasm.git] / nasm.c
blobdbc7ee7bae0902e9f05adb097f445777cf3969f2
1 /* ----------------------------------------------------------------------- *
2 *
3 * Copyright 1996-2009 The NASM Authors - All Rights Reserved
4 * See the file AUTHORS included with the NASM distribution for
5 * the specific copyright holders.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following
9 * conditions are met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
19 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
20 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 *
32 * ----------------------------------------------------------------------- */
33
34 /*
35 * The Netwide Assembler main program module
36 */
37
38 #include "compiler.h"
39
40 #include <stdio.h>
41 #include <stdarg.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <ctype.h>
45 #include <inttypes.h>
46 #include <limits.h>
47 #include <time.h>
48
49 #include "nasm.h"
50 #include "nasmlib.h"
51 #include "saa.h"
52 #include "raa.h"
53 #include "float.h"
54 #include "stdscan.h"
55 #include "insns.h"
56 #include "preproc.h"
57 #include "parser.h"
58 #include "eval.h"
59 #include "assemble.h"
60 #include "labels.h"
61 #include "output/outform.h"
62 #include "listing.h"
63
64 struct forwrefinfo { /* info held on forward refs. */
65 int lineno;
66 int operand;
67 };
68
69 static int get_bits(char *value);
70 static uint32_t get_cpu(char *cpu_str);
71 static void parse_cmdline(int, char **);
72 static void assemble_file(char *, StrList **);
73 static void nasm_verror_gnu(int severity, const char *fmt, va_list args);
74 static void nasm_verror_vc(int severity, const char *fmt, va_list args);
75 static void nasm_verror_common(int severity, const char *fmt, va_list args);
76 static bool is_suppressed_warning(int severity);
77 static void usage(void);
78
79 static int using_debug_info, opt_verbose_info;
80 bool tasm_compatible_mode = false;
81 int pass0, passn;
82 int maxbits = 0;
83 int globalrel = 0;
84
85 static time_t official_compile_time;
86
87 static char inname[FILENAME_MAX];
88 static char outname[FILENAME_MAX];
89 static char listname[FILENAME_MAX];
90 static char errname[FILENAME_MAX];
91 static int globallineno; /* for forward-reference tracking */
92 /* static int pass = 0; */
93 struct ofmt *ofmt = &OF_DEFAULT;
94 const struct dfmt *dfmt;
95
96 static FILE *error_file; /* Where to write error messages */
97
98 FILE *ofile = NULL;
99 int optimizing = -1; /* number of optimization passes to take */
100 static int sb, cmd_sb = 16; /* by default */
101 static uint32_t cmd_cpu = IF_PLEVEL; /* highest level by default */
102 static uint32_t cpu = IF_PLEVEL; /* passed to insn_size & assemble.c */
103 int64_t global_offset_changed; /* referenced in labels.c */
104 int64_t prev_offset_changed;
105 int32_t stall_count;
106
107 static struct location location;
108 int in_abs_seg; /* Flag we are in ABSOLUTE seg */
109 int32_t abs_seg; /* ABSOLUTE segment basis */
110 int32_t abs_offset; /* ABSOLUTE offset */
111
112 static struct RAA *offsets;
113
114 static struct SAA *forwrefs; /* keep track of forward references */
115 static const struct forwrefinfo *forwref;
116
117 static Preproc *preproc;
118 enum op_type {
119 op_normal, /* Preprocess and assemble */
120 op_preprocess, /* Preprocess only */
121 op_depend, /* Generate dependencies */
122 };
123 static enum op_type operating_mode;
124 /* Dependency flags */
125 static bool depend_emit_phony = false;
126 static bool depend_missing_ok = false;
127 static const char *depend_target = NULL;
128 static const char *depend_file = NULL;
129
130 /*
131 * Which of the suppressible warnings are suppressed. Entry zero
132 * isn't an actual warning, but it used for -w+error/-Werror.
133 */
134
135 static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
136 static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
137
138 static const struct warning {
139 const char *name;
140 const char *help;
141 bool enabled;
142 } warnings[ERR_WARN_MAX+1] = {
143 {"error", "treat warnings as errors", false},
144 {"macro-params", "macro calls with wrong parameter count", true},
145 {"macro-selfref", "cyclic macro references", false},
146 {"macro-defaults", "macros with more default than optional parameters", true},
147 {"orphan-labels", "labels alone on lines without trailing `:'", true},
148 {"number-overflow", "numeric constant does not fit", true},
149 {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
150 {"float-overflow", "floating point overflow", true},
151 {"float-denorm", "floating point denormal", false},
152 {"float-underflow", "floating point underflow", false},
153 {"float-toolong", "too many digits in floating-point number", true},
154 {"user", "%warning directives", true},
155 };
156
157 /*
158 * This is a null preprocessor which just copies lines from input
159 * to output. It's used when someone explicitly requests that NASM
160 * not preprocess their source file.
161 */
162
163 static void no_pp_reset(char *, int, ListGen *, StrList **);
164 static char *no_pp_getline(void);
165 static void no_pp_cleanup(int);
166 static Preproc no_pp = {
167 no_pp_reset,
168 no_pp_getline,
169 no_pp_cleanup
170 };
171
172 /*
173 * get/set current offset...
174 */
175 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
176 raa_read(offsets,location.segment))
177 #define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
178 (void)(offsets=raa_write(offsets,location.segment,(x))))
179
180 static bool want_usage;
181 static bool terminate_after_phase;
182 int user_nolist = 0; /* fbk 9/2/00 */
183
184 static void nasm_fputs(const char *line, FILE * outfile)
185 {
186 if (outfile) {
187 fputs(line, outfile);
188 putc('\n', outfile);
189 } else
190 puts(line);
191 }
192
193 /* Convert a struct tm to a POSIX-style time constant */
194 static int64_t posix_mktime(struct tm *tm)
195 {
196 int64_t t;
197 int64_t y = tm->tm_year;
198
199 /* See IEEE 1003.1:2004, section 4.14 */
200
201 t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
202 t += tm->tm_yday;
203 t *= 24;
204 t += tm->tm_hour;
205 t *= 60;
206 t += tm->tm_min;
207 t *= 60;
208 t += tm->tm_sec;
209
210 return t;
211 }
212
213 static void define_macros_early(void)
214 {
215 char temp[128];
216 struct tm lt, *lt_p, gm, *gm_p;
217 int64_t posix_time;
218
219 lt_p = localtime(&official_compile_time);
220 if (lt_p) {
221 lt = *lt_p;
222
223 strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", &lt);
224 pp_pre_define(temp);
225 strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", &lt);
226 pp_pre_define(temp);
227 strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", &lt);
228 pp_pre_define(temp);
229 strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", &lt);
230 pp_pre_define(temp);
231 }
232
233 gm_p = gmtime(&official_compile_time);
234 if (gm_p) {
235 gm = *gm_p;
236
237 strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
238 pp_pre_define(temp);
239 strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
240 pp_pre_define(temp);
241 strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
242 pp_pre_define(temp);
243 strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
244 pp_pre_define(temp);
245 }
246
247 if (gm_p)
248 posix_time = posix_mktime(&gm);
249 else if (lt_p)
250 posix_time = posix_mktime(&lt);
251 else
252 posix_time = 0;
253
254 if (posix_time) {
255 snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
256 pp_pre_define(temp);
257 }
258 }
259
260 static void define_macros_late(void)
261 {
262 char temp[128];
263
264 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s\n",
265 ofmt->shortname);
266 pp_pre_define(temp);
267 }
268
269 static void emit_dependencies(StrList *list)
270 {
271 FILE *deps;
272 int linepos, len;
273 StrList *l, *nl;
274
275 if (depend_file && strcmp(depend_file, "-")) {
276 deps = fopen(depend_file, "w");
277 if (!deps) {
278 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
279 "unable to write dependency file `%s'", depend_file);
280 return;
281 }
282 } else {
283 deps = stdout;
284 }
285
286 linepos = fprintf(deps, "%s:", depend_target);
287 list_for_each(l, list) {
288 len = strlen(l->str);
289 if (linepos + len > 62) {
290 fprintf(deps, " \\\n ");
291 linepos = 1;
292 }
293 fprintf(deps, " %s", l->str);
294 linepos += len+1;
295 }
296 fprintf(deps, "\n\n");
297
298 list_for_each_safe(l, nl, list) {
299 if (depend_emit_phony)
300 fprintf(deps, "%s:\n\n", l->str);
301 nasm_free(l);
302 }
303
304 if (deps != stdout)
305 fclose(deps);
306 }
307
308 int main(int argc, char **argv)
309 {
310 StrList *depend_list = NULL, **depend_ptr;
311
312 time(&official_compile_time);
313
314 pass0 = 0;
315 want_usage = terminate_after_phase = false;
316 nasm_set_verror(nasm_verror_gnu);
317
318 error_file = stderr;
319
320 tolower_init();
321
322 nasm_init_malloc_error();
323 offsets = raa_init();
324 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
325
326 preproc = &nasmpp;
327 operating_mode = op_normal;
328
329 seg_init();
330
331 /* Define some macros dependent on the runtime, but not
332 on the command line. */
333 define_macros_early();
334
335 parse_cmdline(argc, argv);
336
337 if (terminate_after_phase) {
338 if (want_usage)
339 usage();
340 return 1;
341 }
342
343 /* If debugging info is disabled, suppress any debug calls */
344 if (!using_debug_info)
345 ofmt->current_dfmt = &null_debug_form;
346
347 if (ofmt->stdmac)
348 pp_extra_stdmac(ofmt->stdmac);
349 parser_global_info(&location);
350 eval_global_info(ofmt, lookup_label, &location);
351
352 /* define some macros dependent of command-line */
353 define_macros_late();
354
355 depend_ptr = (depend_file || (operating_mode == op_depend))
356 ? &depend_list : NULL;
357 if (!depend_target)
358 depend_target = outname;
359
360 switch (operating_mode) {
361 case op_depend:
362 {
363 char *line;
364
365 if (depend_missing_ok)
366 pp_include_path(NULL); /* "assume generated" */
367
368 preproc->reset(inname, 0, &nasmlist, depend_ptr);
369 if (outname[0] == '\0')
370 ofmt->filename(inname, outname);
371 ofile = NULL;
372 while ((line = preproc->getline()))
373 nasm_free(line);
374 preproc->cleanup(0);
375 }
376 break;
377
378 case op_preprocess:
379 {
380 char *line;
381 char *file_name = NULL;
382 int32_t prior_linnum = 0;
383 int lineinc = 0;
384
385 if (*outname) {
386 ofile = fopen(outname, "w");
387 if (!ofile)
388 nasm_error(ERR_FATAL | ERR_NOFILE,
389 "unable to open output file `%s'",
390 outname);
391 } else
392 ofile = NULL;
393
394 location.known = false;
395
396 /* pass = 1; */
397 preproc->reset(inname, 3, &nasmlist, depend_ptr);
398
399 while ((line = preproc->getline())) {
400 /*
401 * We generate %line directives if needed for later programs
402 */
403 int32_t linnum = prior_linnum += lineinc;
404 int altline = src_get(&linnum, &file_name);
405 if (altline) {
406 if (altline == 1 && lineinc == 1)
407 nasm_fputs("", ofile);
408 else {
409 lineinc = (altline != -1 || lineinc != 1);
410 fprintf(ofile ? ofile : stdout,
411 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
412 file_name);
413 }
414 prior_linnum = linnum;
415 }
416 nasm_fputs(line, ofile);
417 nasm_free(line);
418 }
419 nasm_free(file_name);
420 preproc->cleanup(0);
421 if (ofile)
422 fclose(ofile);
423 if (ofile && terminate_after_phase)
424 remove(outname);
425 ofile = NULL;
426 }
427 break;
428
429 case op_normal:
430 {
431 /*
432 * We must call ofmt->filename _anyway_, even if the user
433 * has specified their own output file, because some
434 * formats (eg OBJ and COFF) use ofmt->filename to find out
435 * the name of the input file and then put that inside the
436 * file.
437 */
438 ofmt->filename(inname, outname);
439
440 ofile = fopen(outname, (ofmt->flags & OFMT_TEXT) ? "w" : "wb");
441 if (!ofile) {
442 nasm_error(ERR_FATAL | ERR_NOFILE,
443 "unable to open output file `%s'", outname);
444 }
445
446 /*
447 * We must call init_labels() before ofmt->init() since
448 * some object formats will want to define labels in their
449 * init routines. (eg OS/2 defines the FLAT group)
450 */
451 init_labels();
452
453 ofmt->init();
454 dfmt = ofmt->current_dfmt;
455 dfmt->init();
456
457 assemble_file(inname, depend_ptr);
458
459 if (!terminate_after_phase) {
460 ofmt->cleanup(using_debug_info);
461 cleanup_labels();
462 fflush(ofile);
463 if (ferror(ofile)) {
464 nasm_error(ERR_NONFATAL|ERR_NOFILE,
465 "write error on output file `%s'", outname);
466 }
467 }
468
469 if (ofile) {
470 fclose(ofile);
471 if (terminate_after_phase)
472 remove(outname);
473 ofile = NULL;
474 }
475 }
476 break;
477 }
478
479 if (depend_list && !terminate_after_phase)
480 emit_dependencies(depend_list);
481
482 if (want_usage)
483 usage();
484
485 raa_free(offsets);
486 saa_free(forwrefs);
487 eval_cleanup();
488 stdscan_cleanup();
489
490 return terminate_after_phase;
491 }
492
493 /*
494 * Get a parameter for a command line option.
495 * First arg must be in the form of e.g. -f...
496 */
497 static char *get_param(char *p, char *q, bool *advance)
498 {
499 *advance = false;
500 if (p[2]) { /* the parameter's in the option */
501 p += 2;
502 while (nasm_isspace(*p))
503 p++;
504 return p;
505 }
506 if (q && q[0]) {
507 *advance = true;
508 return q;
509 }
510 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
511 "option `-%c' requires an argument", p[1]);
512 return NULL;
513 }
514
515 /*
516 * Copy a filename
517 */
518 static void copy_filename(char *dst, const char *src)
519 {
520 size_t len = strlen(src);
521
522 if (len >= (size_t)FILENAME_MAX) {
523 nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
524 return;
525 }
526 strncpy(dst, src, FILENAME_MAX);
527 }
528
529 /*
530 * Convert a string to Make-safe form
531 */
532 static char *quote_for_make(const char *str)
533 {
534 const char *p;
535 char *os, *q;
536
537 size_t n = 1; /* Terminating zero */
538 size_t nbs = 0;
539
540 if (!str)
541 return NULL;
542
543 for (p = str; *p; p++) {
544 switch (*p) {
545 case ' ':
546 case '\t':
547 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
548 n += nbs + 2;
549 nbs = 0;
550 break;
551 case '$':
552 case '#':
553 nbs = 0;
554 n += 2;
555 break;
556 case '\\':
557 nbs++;
558 n++;
559 break;
560 default:
561 nbs = 0;
562 n++;
563 break;
564 }
565 }
566
567 /* Convert N backslashes at the end of filename to 2N backslashes */
568 if (nbs)
569 n += nbs;
570
571 os = q = nasm_malloc(n);
572
573 nbs = 0;
574 for (p = str; *p; p++) {
575 switch (*p) {
576 case ' ':
577 case '\t':
578 while (nbs--)
579 *q++ = '\\';
580 *q++ = '\\';
581 *q++ = *p;
582 break;
583 case '$':
584 *q++ = *p;
585 *q++ = *p;
586 nbs = 0;
587 break;
588 case '#':
589 *q++ = '\\';
590 *q++ = *p;
591 nbs = 0;
592 break;
593 case '\\':
594 *q++ = *p;
595 nbs++;
596 break;
597 default:
598 *q++ = *p;
599 nbs = 0;
600 break;
601 }
602 }
603 while (nbs--)
604 *q++ = '\\';
605
606 *q = '\0';
607
608 return os;
609 }
610
611 struct textargs {
612 const char *label;
613 int value;
614 };
615
616 #define OPT_PREFIX 0
617 #define OPT_POSTFIX 1
618 struct textargs textopts[] = {
619 {"prefix", OPT_PREFIX},
620 {"postfix", OPT_POSTFIX},
621 {NULL, 0}
622 };
623
624 static bool stopoptions = false;
625 static bool process_arg(char *p, char *q)
626 {
627 char *param;
628 int i;
629 bool advance = false;
630 bool do_warn;
631
632 if (!p || !p[0])
633 return false;
634
635 if (p[0] == '-' && !stopoptions) {
636 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
637 /* These parameters take values */
638 if (!(param = get_param(p, q, &advance)))
639 return advance;
640 }
641
642 switch (p[1]) {
643 case 's':
644 error_file = stdout;
645 break;
646
647 case 'o': /* output file */
648 copy_filename(outname, param);
649 break;
650
651 case 'f': /* output format */
652 ofmt = ofmt_find(param);
653 if (!ofmt) {
654 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
655 "unrecognised output format `%s' - "
656 "use -hf for a list", param);
657 }
658 break;
659
660 case 'O': /* Optimization level */
661 {
662 int opt;
663
664 if (!*param) {
665 /* Naked -O == -Ox */
666 optimizing = INT_MAX >> 1; /* Almost unlimited */
667 } else {
668 while (*param) {
669 switch (*param) {
670 case '0': case '1': case '2': case '3': case '4':
671 case '5': case '6': case '7': case '8': case '9':
672 opt = strtoul(param, &param, 10);
673
674 /* -O0 -> optimizing == -1, 0.98 behaviour */
675 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
676 if (opt < 2)
677 optimizing = opt - 1;
678 else
679 optimizing = opt;
680 break;
681
682 case 'v':
683 case '+':
684 param++;
685 opt_verbose_info = true;
686 break;
687
688 case 'x':
689 param++;
690 optimizing = INT_MAX >> 1; /* Almost unlimited */
691 break;
692
693 default:
694 nasm_error(ERR_FATAL,
695 "unknown optimization option -O%c\n",
696 *param);
697 break;
698 }
699 }
700 }
701 break;
702 }
703
704 case 'p': /* pre-include */
705 case 'P':
706 pp_pre_include(param);
707 break;
708
709 case 'd': /* pre-define */
710 case 'D':
711 pp_pre_define(param);
712 break;
713
714 case 'u': /* un-define */
715 case 'U':
716 pp_pre_undefine(param);
717 break;
718
719 case 'i': /* include search path */
720 case 'I':
721 pp_include_path(param);
722 break;
723
724 case 'l': /* listing file */
725 copy_filename(listname, param);
726 break;
727
728 case 'Z': /* error messages file */
729 strcpy(errname, param);
730 break;
731
732 case 'F': /* specify debug format */
733 ofmt->current_dfmt = dfmt_find(ofmt, param);
734 if (!ofmt->current_dfmt) {
735 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
736 "unrecognized debug format `%s' for"
737 " output format `%s'",
738 param, ofmt->shortname);
739 }
740 using_debug_info = true;
741 break;
742
743 case 'X': /* specify error reporting format */
744 if (nasm_stricmp("vc", param) == 0)
745 nasm_set_verror(nasm_verror_vc);
746 else if (nasm_stricmp("gnu", param) == 0)
747 nasm_set_verror(nasm_verror_gnu);
748 else
749 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
750 "unrecognized error reporting format `%s'",
751 param);
752 break;
753
754 case 'g':
755 using_debug_info = true;
756 break;
757
758 case 'h':
759 printf
760 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
761 "[-l listfile]\n"
762 " [options...] [--] filename\n"
763 " or nasm -v for version info\n\n"
764 " -t assemble in SciTech TASM compatible mode\n"
765 " -g generate debug information in selected format\n");
766 printf
767 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
768 " -a don't preprocess (assemble only)\n"
769 " -M generate Makefile dependencies on stdout\n"
770 " -MG d:o, missing files assumed generated\n"
771 " -MF <file> set Makefile dependency file\n"
772 " -MD <file> assemble and generate dependencies\n"
773 " -MT <file> dependency target name\n"
774 " -MQ <file> dependency target name (quoted)\n"
775 " -MP emit phony target\n\n"
776 " -Z<file> redirect error messages to file\n"
777 " -s redirect error messages to stdout\n\n"
778 " -F format select a debugging format\n\n"
779 " -I<path> adds a pathname to the include file path\n");
780 printf
781 (" -O<digit> optimize branch offsets (-O0 disables, default)\n"
782 " -P<file> pre-includes a file\n"
783 " -D<macro>[=<value>] pre-defines a macro\n"
784 " -U<macro> undefines a macro\n"
785 " -X<format> specifies error reporting format (gnu or vc)\n"
786 " -w+foo enables warning foo (equiv. -Wfoo)\n"
787 " -w-foo disable warning foo (equiv. -Wno-foo)\n\n"
788 "--prefix,--postfix\n"
789 " this options prepend or append the given argument to all\n"
790 " extern and global variables\n\n"
791 "Warnings:\n");
792 for (i = 0; i <= ERR_WARN_MAX; i++)
793 printf(" %-23s %s (default %s)\n",
794 warnings[i].name, warnings[i].help,
795 warnings[i].enabled ? "on" : "off");
796 printf
797 ("\nresponse files should contain command line parameters"
798 ", one per line.\n");
799 if (p[2] == 'f') {
800 printf("\nvalid output formats for -f are"
801 " (`*' denotes default):\n");
802 ofmt_list(ofmt, stdout);
803 } else {
804 printf("\nFor a list of valid output formats, use -hf.\n");
805 printf("For a list of debug formats, use -f <form> -y.\n");
806 }
807 exit(0); /* never need usage message here */
808 break;
809
810 case 'y':
811 printf("\nvalid debug formats for '%s' output format are"
812 " ('*' denotes default):\n", ofmt->shortname);
813 dfmt_list(ofmt, stdout);
814 exit(0);
815 break;
816
817 case 't':
818 tasm_compatible_mode = true;
819 break;
820
821 case 'v':
822 printf("NASM version %s compiled on %s%s\n",
823 nasm_version, nasm_date, nasm_compile_options);
824 exit(0); /* never need usage message here */
825 break;
826
827 case 'e': /* preprocess only */
828 case 'E':
829 operating_mode = op_preprocess;
830 break;
831
832 case 'a': /* assemble only - don't preprocess */
833 preproc = &no_pp;
834 break;
835
836 case 'W':
837 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
838 do_warn = false;
839 param += 3;
840 } else {
841 do_warn = true;
842 }
843 goto set_warning;
844
845 case 'w':
846 if (param[0] != '+' && param[0] != '-') {
847 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
848 "invalid option to `-w'");
849 break;
850 }
851 do_warn = (param[0] == '+');
852 param++;
853 goto set_warning;
854 set_warning:
855 for (i = 0; i <= ERR_WARN_MAX; i++)
856 if (!nasm_stricmp(param, warnings[i].name))
857 break;
858 if (i <= ERR_WARN_MAX)
859 warning_on_global[i] = do_warn;
860 else if (!nasm_stricmp(param, "all"))
861 for (i = 1; i <= ERR_WARN_MAX; i++)
862 warning_on_global[i] = do_warn;
863 else if (!nasm_stricmp(param, "none"))
864 for (i = 1; i <= ERR_WARN_MAX; i++)
865 warning_on_global[i] = !do_warn;
866 else
867 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
868 "invalid warning `%s'", param);
869 break;
870
871 case 'M':
872 switch (p[2]) {
873 case 0:
874 operating_mode = op_depend;
875 break;
876 case 'G':
877 operating_mode = op_depend;
878 depend_missing_ok = true;
879 break;
880 case 'P':
881 depend_emit_phony = true;
882 break;
883 case 'D':
884 depend_file = q;
885 advance = true;
886 break;
887 case 'T':
888 depend_target = q;
889 advance = true;
890 break;
891 case 'Q':
892 depend_target = quote_for_make(q);
893 advance = true;
894 break;
895 default:
896 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
897 "unknown dependency option `-M%c'", p[2]);
898 break;
899 }
900 if (advance && (!q || !q[0])) {
901 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
902 "option `-M%c' requires a parameter", p[2]);
903 break;
904 }
905 break;
906
907 case '-':
908 {
909 int s;
910
911 if (p[2] == 0) { /* -- => stop processing options */
912 stopoptions = 1;
913 break;
914 }
915 for (s = 0; textopts[s].label; s++) {
916 if (!nasm_stricmp(p + 2, textopts[s].label)) {
917 break;
918 }
919 }
920
921 switch (s) {
922
923 case OPT_PREFIX:
924 case OPT_POSTFIX:
925 {
926 if (!q) {
927 nasm_error(ERR_NONFATAL | ERR_NOFILE |
928 ERR_USAGE,
929 "option `--%s' requires an argument",
930 p + 2);
931 break;
932 } else {
933 advance = 1, param = q;
934 }
935
936 if (s == OPT_PREFIX) {
937 strncpy(lprefix, param, PREFIX_MAX - 1);
938 lprefix[PREFIX_MAX - 1] = 0;
939 break;
940 }
941 if (s == OPT_POSTFIX) {
942 strncpy(lpostfix, param, POSTFIX_MAX - 1);
943 lpostfix[POSTFIX_MAX - 1] = 0;
944 break;
945 }
946 break;
947 }
948 default:
949 {
950 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
951 "unrecognised option `--%s'", p + 2);
952 break;
953 }
954 }
955 break;
956 }
957
958 default:
959 if (!ofmt->setinfo(GI_SWITCH, &p))
960 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
961 "unrecognised option `-%c'", p[1]);
962 break;
963 }
964 } else {
965 if (*inname) {
966 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
967 "more than one input file specified");
968 } else {
969 copy_filename(inname, p);
970 }
971 }
972
973 return advance;
974 }
975
976 #define ARG_BUF_DELTA 128
977
978 static void process_respfile(FILE * rfile)
979 {
980 char *buffer, *p, *q, *prevarg;
981 int bufsize, prevargsize;
982
983 bufsize = prevargsize = ARG_BUF_DELTA;
984 buffer = nasm_malloc(ARG_BUF_DELTA);
985 prevarg = nasm_malloc(ARG_BUF_DELTA);
986 prevarg[0] = '\0';
987
988 while (1) { /* Loop to handle all lines in file */
989 p = buffer;
990 while (1) { /* Loop to handle long lines */
991 q = fgets(p, bufsize - (p - buffer), rfile);
992 if (!q)
993 break;
994 p += strlen(p);
995 if (p > buffer && p[-1] == '\n')
996 break;
997 if (p - buffer > bufsize - 10) {
998 int offset;
999 offset = p - buffer;
1000 bufsize += ARG_BUF_DELTA;
1001 buffer = nasm_realloc(buffer, bufsize);
1002 p = buffer + offset;
1003 }
1004 }
1005
1006 if (!q && p == buffer) {
1007 if (prevarg[0])
1008 process_arg(prevarg, NULL);
1009 nasm_free(buffer);
1010 nasm_free(prevarg);
1011 return;
1012 }
1013
1014 /*
1015 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1016 * them are present at the end of the line.
1017 */
1018 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
1019
1020 while (p > buffer && nasm_isspace(p[-1]))
1021 *--p = '\0';
1022
1023 p = buffer;
1024 while (nasm_isspace(*p))
1025 p++;
1026
1027 if (process_arg(prevarg, p))
1028 *p = '\0';
1029
1030 if ((int) strlen(p) > prevargsize - 10) {
1031 prevargsize += ARG_BUF_DELTA;
1032 prevarg = nasm_realloc(prevarg, prevargsize);
1033 }
1034 strncpy(prevarg, p, prevargsize);
1035 }
1036 }
1037
1038 /* Function to process args from a string of args, rather than the
1039 * argv array. Used by the environment variable and response file
1040 * processing.
1041 */
1042 static void process_args(char *args)
1043 {
1044 char *p, *q, *arg, *prevarg;
1045 char separator = ' ';
1046
1047 p = args;
1048 if (*p && *p != '-')
1049 separator = *p++;
1050 arg = NULL;
1051 while (*p) {
1052 q = p;
1053 while (*p && *p != separator)
1054 p++;
1055 while (*p == separator)
1056 *p++ = '\0';
1057 prevarg = arg;
1058 arg = q;
1059 if (process_arg(prevarg, arg))
1060 arg = NULL;
1061 }
1062 if (arg)
1063 process_arg(arg, NULL);
1064 }
1065
1066 static void process_response_file(const char *file)
1067 {
1068 char str[2048];
1069 FILE *f = fopen(file, "r");
1070 if (!f) {
1071 perror(file);
1072 exit(-1);
1073 }
1074 while (fgets(str, sizeof str, f)) {
1075 process_args(str);
1076 }
1077 fclose(f);
1078 }
1079
1080 static void parse_cmdline(int argc, char **argv)
1081 {
1082 FILE *rfile;
1083 char *envreal, *envcopy = NULL, *p, *arg;
1084 int i;
1085
1086 *inname = *outname = *listname = *errname = '\0';
1087 for (i = 0; i <= ERR_WARN_MAX; i++)
1088 warning_on_global[i] = warnings[i].enabled;
1089
1090 /*
1091 * First, process the NASMENV environment variable.
1092 */
1093 envreal = getenv("NASMENV");
1094 arg = NULL;
1095 if (envreal) {
1096 envcopy = nasm_strdup(envreal);
1097 process_args(envcopy);
1098 nasm_free(envcopy);
1099 }
1100
1101 /*
1102 * Now process the actual command line.
1103 */
1104 while (--argc) {
1105 bool advance;
1106 argv++;
1107 if (argv[0][0] == '@') {
1108 /* We have a response file, so process this as a set of
1109 * arguments like the environment variable. This allows us
1110 * to have multiple arguments on a single line, which is
1111 * different to the -@resp file processing below for regular
1112 * NASM.
1113 */
1114 process_response_file(argv[0]+1);
1115 argc--;
1116 argv++;
1117 }
1118 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1119 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1120 if (p) {
1121 rfile = fopen(p, "r");
1122 if (rfile) {
1123 process_respfile(rfile);
1124 fclose(rfile);
1125 } else
1126 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1127 "unable to open response file `%s'", p);
1128 }
1129 } else
1130 advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1131 argv += advance, argc -= advance;
1132 }
1133
1134 /* Look for basic command line typos. This definitely doesn't
1135 catch all errors, but it might help cases of fumbled fingers. */
1136 if (!*inname)
1137 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1138 "no input file specified");
1139 else if (!strcmp(inname, errname) ||
1140 !strcmp(inname, outname) ||
1141 !strcmp(inname, listname) ||
1142 (depend_file && !strcmp(inname, depend_file)))
1143 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1144 "file `%s' is both input and output file",
1145 inname);
1146
1147 if (*errname) {
1148 error_file = fopen(errname, "w");
1149 if (!error_file) {
1150 error_file = stderr; /* Revert to default! */
1151 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1152 "cannot open file `%s' for error messages",
1153 errname);
1154 }
1155 }
1156 }
1157
1158 static enum directives getkw(char **directive, char **value);
1159
1160 static void assemble_file(char *fname, StrList **depend_ptr)
1161 {
1162 char *directive, *value, *p, *q, *special, *line, debugid[80];
1163 insn output_ins;
1164 int i, validid;
1165 bool rn_error;
1166 int32_t seg;
1167 int64_t offs;
1168 struct tokenval tokval;
1169 expr *e;
1170 int pass_max;
1171
1172 if (cmd_sb == 32 && cmd_cpu < IF_386)
1173 nasm_error(ERR_FATAL, "command line: "
1174 "32-bit segment size requires a higher cpu");
1175
1176 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1177 for (passn = 1; pass0 <= 2; passn++) {
1178 int pass1, pass2;
1179 ldfunc def_label;
1180
1181 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1182 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1183 /* pass0 0, 0, 0, ..., 1, 2 */
1184
1185 def_label = passn > 1 ? redefine_label : define_label;
1186
1187 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1188 cpu = cmd_cpu;
1189 if (pass0 == 2) {
1190 if (*listname)
1191 nasmlist.init(listname, nasm_error);
1192 }
1193 in_abs_seg = false;
1194 global_offset_changed = 0; /* set by redefine_label */
1195 location.segment = ofmt->section(NULL, pass2, &sb);
1196 globalbits = sb;
1197 if (passn > 1) {
1198 saa_rewind(forwrefs);
1199 forwref = saa_rstruct(forwrefs);
1200 raa_free(offsets);
1201 offsets = raa_init();
1202 }
1203 preproc->reset(fname, pass1, &nasmlist,
1204 pass1 == 2 ? depend_ptr : NULL);
1205 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1206
1207 globallineno = 0;
1208 if (passn == 1)
1209 location.known = true;
1210 location.offset = offs = GET_CURR_OFFS;
1211
1212 while ((line = preproc->getline())) {
1213 enum directives d;
1214 globallineno++;
1215
1216 /*
1217 * Here we parse our directives; this is not handled by the
1218 * 'real' parser. This really should be a separate function.
1219 */
1220 directive = line;
1221 d = getkw(&directive, &value);
1222 if (d) {
1223 int err = 0;
1224
1225 switch (d) {
1226 case D_SEGMENT: /* [SEGMENT n] */
1227 case D_SECTION:
1228 seg = ofmt->section(value, pass2, &sb);
1229 if (seg == NO_SEG) {
1230 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1231 "segment name `%s' not recognized",
1232 value);
1233 } else {
1234 in_abs_seg = false;
1235 location.segment = seg;
1236 }
1237 break;
1238 case D_EXTERN: /* [EXTERN label:special] */
1239 if (*value == '$')
1240 value++; /* skip initial $ if present */
1241 if (pass0 == 2) {
1242 q = value;
1243 while (*q && *q != ':')
1244 q++;
1245 if (*q == ':') {
1246 *q++ = '\0';
1247 ofmt->symdef(value, 0L, 0L, 3, q);
1248 }
1249 } else if (passn == 1) {
1250 q = value;
1251 validid = true;
1252 if (!isidstart(*q))
1253 validid = false;
1254 while (*q && *q != ':') {
1255 if (!isidchar(*q))
1256 validid = false;
1257 q++;
1258 }
1259 if (!validid) {
1260 nasm_error(ERR_NONFATAL,
1261 "identifier expected after EXTERN");
1262 break;
1263 }
1264 if (*q == ':') {
1265 *q++ = '\0';
1266 special = q;
1267 } else
1268 special = NULL;
1269 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1270 int temp = pass0;
1271 pass0 = 1; /* fake pass 1 in labels.c */
1272 declare_as_global(value, special);
1273 define_label(value, seg_alloc(), 0L, NULL,
1274 false, true);
1275 pass0 = temp;
1276 }
1277 } /* else pass0 == 1 */
1278 break;
1279 case D_BITS: /* [BITS bits] */
1280 globalbits = sb = get_bits(value);
1281 break;
1282 case D_GLOBAL: /* [GLOBAL symbol:special] */
1283 if (*value == '$')
1284 value++; /* skip initial $ if present */
1285 if (pass0 == 2) { /* pass 2 */
1286 q = value;
1287 while (*q && *q != ':')
1288 q++;
1289 if (*q == ':') {
1290 *q++ = '\0';
1291 ofmt->symdef(value, 0L, 0L, 3, q);
1292 }
1293 } else if (pass2 == 1) { /* pass == 1 */
1294 q = value;
1295 validid = true;
1296 if (!isidstart(*q))
1297 validid = false;
1298 while (*q && *q != ':') {
1299 if (!isidchar(*q))
1300 validid = false;
1301 q++;
1302 }
1303 if (!validid) {
1304 nasm_error(ERR_NONFATAL,
1305 "identifier expected after GLOBAL");
1306 break;
1307 }
1308 if (*q == ':') {
1309 *q++ = '\0';
1310 special = q;
1311 } else
1312 special = NULL;
1313 declare_as_global(value, special);
1314 } /* pass == 1 */
1315 break;
1316 case D_COMMON: /* [COMMON symbol size:special] */
1317 {
1318 int64_t size;
1319
1320 if (*value == '$')
1321 value++; /* skip initial $ if present */
1322 p = value;
1323 validid = true;
1324 if (!isidstart(*p))
1325 validid = false;
1326 while (*p && !nasm_isspace(*p)) {
1327 if (!isidchar(*p))
1328 validid = false;
1329 p++;
1330 }
1331 if (!validid) {
1332 nasm_error(ERR_NONFATAL,
1333 "identifier expected after COMMON");
1334 break;
1335 }
1336 if (*p) {
1337 while (*p && nasm_isspace(*p))
1338 *p++ = '\0';
1339 q = p;
1340 while (*q && *q != ':')
1341 q++;
1342 if (*q == ':') {
1343 *q++ = '\0';
1344 special = q;
1345 } else {
1346 special = NULL;
1347 }
1348 size = readnum(p, &rn_error);
1349 if (rn_error) {
1350 nasm_error(ERR_NONFATAL,
1351 "invalid size specified"
1352 " in COMMON declaration");
1353 break;
1354 }
1355 } else {
1356 nasm_error(ERR_NONFATAL,
1357 "no size specified in"
1358 " COMMON declaration");
1359 break;
1360 }
1361
1362 if (pass0 < 2) {
1363 define_common(value, seg_alloc(), size, special);
1364 } else if (pass0 == 2) {
1365 if (special)
1366 ofmt->symdef(value, 0L, 0L, 3, special);
1367 }
1368 break;
1369 }
1370 case D_ABSOLUTE: /* [ABSOLUTE address] */
1371 stdscan_reset();
1372 stdscan_bufptr = value;
1373 tokval.t_type = TOKEN_INVALID;
1374 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1375 nasm_error, NULL);
1376 if (e) {
1377 if (!is_reloc(e))
1378 nasm_error(pass0 ==
1379 1 ? ERR_NONFATAL : ERR_PANIC,
1380 "cannot use non-relocatable expression as "
1381 "ABSOLUTE address");
1382 else {
1383 abs_seg = reloc_seg(e);
1384 abs_offset = reloc_value(e);
1385 }
1386 } else if (passn == 1)
1387 abs_offset = 0x100; /* don't go near zero in case of / */
1388 else
1389 nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
1390 "in pass two");
1391 in_abs_seg = true;
1392 location.segment = NO_SEG;
1393 break;
1394 case D_DEBUG: /* [DEBUG] */
1395 p = value;
1396 q = debugid;
1397 validid = true;
1398 if (!isidstart(*p))
1399 validid = false;
1400 while (*p && !nasm_isspace(*p)) {
1401 if (!isidchar(*p))
1402 validid = false;
1403 *q++ = *p++;
1404 }
1405 *q++ = 0;
1406 if (!validid) {
1407 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1408 "identifier expected after DEBUG");
1409 break;
1410 }
1411 while (*p && nasm_isspace(*p))
1412 p++;
1413 if (pass0 == 2)
1414 dfmt->debug_directive(debugid, p);
1415 break;
1416 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1417 while (*value && nasm_isspace(*value))
1418 value++;
1419
1420 switch(*value) {
1421 case '-': validid = 0; value++; break;
1422 case '+': validid = 1; value++; break;
1423 case '*': validid = 2; value++; break;
1424 default: validid = 1; break;
1425 }
1426
1427 for (i = 1; i <= ERR_WARN_MAX; i++)
1428 if (!nasm_stricmp(value, warnings[i].name))
1429 break;
1430 if (i <= ERR_WARN_MAX) {
1431 switch(validid) {
1432 case 0:
1433 warning_on[i] = false;
1434 break;
1435 case 1:
1436 warning_on[i] = true;
1437 break;
1438 case 2:
1439 warning_on[i] = warning_on_global[i];
1440 break;
1441 }
1442 }
1443 else
1444 nasm_error(ERR_NONFATAL,
1445 "invalid warning id in WARNING directive");
1446 break;
1447 case D_CPU: /* [CPU] */
1448 cpu = get_cpu(value);
1449 break;
1450 case D_LIST: /* [LIST {+|-}] */
1451 while (*value && nasm_isspace(*value))
1452 value++;
1453
1454 if (*value == '+') {
1455 user_nolist = 0;
1456 } else {
1457 if (*value == '-') {
1458 user_nolist = 1;
1459 } else {
1460 err = 1;
1461 }
1462 }
1463 break;
1464 case D_DEFAULT: /* [DEFAULT] */
1465 stdscan_reset();
1466 stdscan_bufptr = value;
1467 tokval.t_type = TOKEN_INVALID;
1468 if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1469 switch ((int)tokval.t_integer) {
1470 case S_REL:
1471 globalrel = 1;
1472 break;
1473 case S_ABS:
1474 globalrel = 0;
1475 break;
1476 default:
1477 err = 1;
1478 break;
1479 }
1480 } else {
1481 err = 1;
1482 }
1483 break;
1484 case D_FLOAT:
1485 if (float_option(value)) {
1486 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1487 "unknown 'float' directive: %s",
1488 value);
1489 }
1490 break;
1491 default:
1492 if (!d || !ofmt->directive(d, value, pass2))
1493 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1494 "unrecognised directive [%s]",
1495 directive);
1496 break;
1497 }
1498 if (err) {
1499 nasm_error(ERR_NONFATAL,
1500 "invalid parameter to [%s] directive",
1501 directive);
1502 }
1503 } else { /* it isn't a directive */
1504 parse_line(pass1, line, &output_ins, def_label);
1505
1506 if (optimizing > 0) {
1507 if (forwref != NULL && globallineno == forwref->lineno) {
1508 output_ins.forw_ref = true;
1509 do {
1510 output_ins.oprs[forwref->operand].opflags |=
1511 OPFLAG_FORWARD;
1512 forwref = saa_rstruct(forwrefs);
1513 } while (forwref != NULL
1514 && forwref->lineno == globallineno);
1515 } else
1516 output_ins.forw_ref = false;
1517
1518 if (output_ins.forw_ref) {
1519 if (passn == 1) {
1520 for (i = 0; i < output_ins.operands; i++) {
1521 if (output_ins.oprs[i].
1522 opflags & OPFLAG_FORWARD) {
1523 struct forwrefinfo *fwinf =
1524 (struct forwrefinfo *)
1525 saa_wstruct(forwrefs);
1526 fwinf->lineno = globallineno;
1527 fwinf->operand = i;
1528 }
1529 }
1530 }
1531 }
1532 }
1533
1534 /* forw_ref */
1535 if (output_ins.opcode == I_EQU) {
1536 if (pass1 == 1) {
1537 /*
1538 * Special `..' EQUs get processed in pass two,
1539 * except `..@' macro-processor EQUs which are done
1540 * in the normal place.
1541 */
1542 if (!output_ins.label)
1543 nasm_error(ERR_NONFATAL,
1544 "EQU not preceded by label");
1545
1546 else if (output_ins.label[0] != '.' ||
1547 output_ins.label[1] != '.' ||
1548 output_ins.label[2] == '@') {
1549 if (output_ins.operands == 1 &&
1550 (output_ins.oprs[0].type & IMMEDIATE) &&
1551 output_ins.oprs[0].wrt == NO_SEG) {
1552 bool isext = !!(output_ins.oprs[0].opflags
1553 & OPFLAG_EXTERN);
1554 def_label(output_ins.label,
1555 output_ins.oprs[0].segment,
1556 output_ins.oprs[0].offset, NULL,
1557 false, isext);
1558 } else if (output_ins.operands == 2
1559 && (output_ins.oprs[0].type & IMMEDIATE)
1560 && (output_ins.oprs[0].type & COLON)
1561 && output_ins.oprs[0].segment == NO_SEG
1562 && output_ins.oprs[0].wrt == NO_SEG
1563 && (output_ins.oprs[1].type & IMMEDIATE)
1564 && output_ins.oprs[1].segment == NO_SEG
1565 && output_ins.oprs[1].wrt == NO_SEG) {
1566 def_label(output_ins.label,
1567 output_ins.oprs[0].offset | SEG_ABS,
1568 output_ins.oprs[1].offset,
1569 NULL, false, false);
1570 } else
1571 nasm_error(ERR_NONFATAL,
1572 "bad syntax for EQU");
1573 }
1574 } else {
1575 /*
1576 * Special `..' EQUs get processed here, except
1577 * `..@' macro processor EQUs which are done above.
1578 */
1579 if (output_ins.label[0] == '.' &&
1580 output_ins.label[1] == '.' &&
1581 output_ins.label[2] != '@') {
1582 if (output_ins.operands == 1 &&
1583 (output_ins.oprs[0].type & IMMEDIATE)) {
1584 define_label(output_ins.label,
1585 output_ins.oprs[0].segment,
1586 output_ins.oprs[0].offset,
1587 NULL, false, false);
1588 } else if (output_ins.operands == 2
1589 && (output_ins.oprs[0].
1590 type & IMMEDIATE)
1591 && (output_ins.oprs[0].type & COLON)
1592 && output_ins.oprs[0].segment ==
1593 NO_SEG
1594 && (output_ins.oprs[1].
1595 type & IMMEDIATE)
1596 && output_ins.oprs[1].segment ==
1597 NO_SEG) {
1598 define_label(output_ins.label,
1599 output_ins.oprs[0].
1600 offset | SEG_ABS,
1601 output_ins.oprs[1].offset,
1602 NULL, false, false);
1603 } else
1604 nasm_error(ERR_NONFATAL,
1605 "bad syntax for EQU");
1606 }
1607 }
1608 } else { /* instruction isn't an EQU */
1609
1610 if (pass1 == 1) {
1611
1612 int64_t l = insn_size(location.segment, offs, sb, cpu,
1613 &output_ins, nasm_error);
1614
1615 /* if (using_debug_info) && output_ins.opcode != -1) */
1616 if (using_debug_info)
1617 { /* fbk 03/25/01 */
1618 /* this is done here so we can do debug type info */
1619 int32_t typeinfo =
1620 TYS_ELEMENTS(output_ins.operands);
1621 switch (output_ins.opcode) {
1622 case I_RESB:
1623 typeinfo =
1624 TYS_ELEMENTS(output_ins.oprs[0].
1625 offset) | TY_BYTE;
1626 break;
1627 case I_RESW:
1628 typeinfo =
1629 TYS_ELEMENTS(output_ins.oprs[0].
1630 offset) | TY_WORD;
1631 break;
1632 case I_RESD:
1633 typeinfo =
1634 TYS_ELEMENTS(output_ins.oprs[0].
1635 offset) | TY_DWORD;
1636 break;
1637 case I_RESQ:
1638 typeinfo =
1639 TYS_ELEMENTS(output_ins.oprs[0].
1640 offset) | TY_QWORD;
1641 break;
1642 case I_REST:
1643 typeinfo =
1644 TYS_ELEMENTS(output_ins.oprs[0].
1645 offset) | TY_TBYTE;
1646 break;
1647 case I_RESO:
1648 typeinfo =
1649 TYS_ELEMENTS(output_ins.oprs[0].
1650 offset) | TY_OWORD;
1651 break;
1652 case I_RESY:
1653 typeinfo =
1654 TYS_ELEMENTS(output_ins.oprs[0].
1655 offset) | TY_YWORD;
1656 break;
1657 case I_DB:
1658 typeinfo |= TY_BYTE;
1659 break;
1660 case I_DW:
1661 typeinfo |= TY_WORD;
1662 break;
1663 case I_DD:
1664 if (output_ins.eops_float)
1665 typeinfo |= TY_FLOAT;
1666 else
1667 typeinfo |= TY_DWORD;
1668 break;
1669 case I_DQ:
1670 typeinfo |= TY_QWORD;
1671 break;
1672 case I_DT:
1673 typeinfo |= TY_TBYTE;
1674 break;
1675 case I_DO:
1676 typeinfo |= TY_OWORD;
1677 break;
1678 case I_DY:
1679 typeinfo |= TY_YWORD;
1680 break;
1681 default:
1682 typeinfo = TY_LABEL;
1683
1684 }
1685
1686 dfmt->debug_typevalue(typeinfo);
1687 }
1688 if (l != -1) {
1689 offs += l;
1690 SET_CURR_OFFS(offs);
1691 }
1692 /*
1693 * else l == -1 => invalid instruction, which will be
1694 * flagged as an error on pass 2
1695 */
1696
1697 } else {
1698 offs += assemble(location.segment, offs, sb, cpu,
1699 &output_ins, ofmt, nasm_error,
1700 &nasmlist);
1701 SET_CURR_OFFS(offs);
1702
1703 }
1704 } /* not an EQU */
1705 cleanup_insn(&output_ins);
1706 }
1707 nasm_free(line);
1708 location.offset = offs = GET_CURR_OFFS;
1709 } /* end while (line = preproc->getline... */
1710
1711 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1712 nasm_error(ERR_NONFATAL,
1713 "phase error detected at end of assembly.");
1714
1715 if (pass1 == 1)
1716 preproc->cleanup(1);
1717
1718 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1719 pass0++;
1720 } else if (global_offset_changed &&
1721 global_offset_changed < prev_offset_changed) {
1722 prev_offset_changed = global_offset_changed;
1723 stall_count = 0;
1724 } else {
1725 stall_count++;
1726 }
1727
1728 if (terminate_after_phase)
1729 break;
1730
1731 if ((stall_count > 997) || (passn >= pass_max)) {
1732 /* We get here if the labels don't converge
1733 * Example: FOO equ FOO + 1
1734 */
1735 nasm_error(ERR_NONFATAL,
1736 "Can't find valid values for all labels "
1737 "after %d passes, giving up.", passn);
1738 nasm_error(ERR_NONFATAL,
1739 "Possible causes: recursive EQUs, macro abuse.");
1740 break;
1741 }
1742 }
1743
1744 preproc->cleanup(0);
1745 nasmlist.cleanup();
1746 if (!terminate_after_phase && opt_verbose_info) {
1747 /* -On and -Ov switches */
1748 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1749 }
1750 }
1751
1752 static enum directives getkw(char **directive, char **value)
1753 {
1754 char *p, *q, *buf;
1755
1756 buf = *directive;
1757
1758 /* allow leading spaces or tabs */
1759 while (*buf == ' ' || *buf == '\t')
1760 buf++;
1761
1762 if (*buf != '[')
1763 return 0;
1764
1765 p = buf;
1766
1767 while (*p && *p != ']')
1768 p++;
1769
1770 if (!*p)
1771 return 0;
1772
1773 q = p++;
1774
1775 while (*p && *p != ';') {
1776 if (!nasm_isspace(*p))
1777 return 0;
1778 p++;
1779 }
1780 q[1] = '\0';
1781
1782 *directive = p = buf + 1;
1783 while (*buf && *buf != ' ' && *buf != ']' && *buf != '\t')
1784 buf++;
1785 if (*buf == ']') {
1786 *buf = '\0';
1787 *value = buf;
1788 } else {
1789 *buf++ = '\0';
1790 while (nasm_isspace(*buf))
1791 buf++; /* beppu - skip leading whitespace */
1792 *value = buf;
1793 while (*buf != ']')
1794 buf++;
1795 *buf++ = '\0';
1796 }
1797
1798 return find_directive(*directive);
1799 }
1800
1801 /**
1802 * gnu style error reporting
1803 * This function prints an error message to error_file in the
1804 * style used by GNU. An example would be:
1805 * file.asm:50: error: blah blah blah
1806 * where file.asm is the name of the file, 50 is the line number on
1807 * which the error occurs (or is detected) and "error:" is one of
1808 * the possible optional diagnostics -- it can be "error" or "warning"
1809 * or something else. Finally the line terminates with the actual
1810 * error message.
1811 *
1812 * @param severity the severity of the warning or error
1813 * @param fmt the printf style format string
1814 */
1815 static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
1816 {
1817 char *currentfile = NULL;
1818 int32_t lineno = 0;
1819
1820 if (is_suppressed_warning(severity))
1821 return;
1822
1823 if (!(severity & ERR_NOFILE))
1824 src_get(&lineno, &currentfile);
1825
1826 if (currentfile) {
1827 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1828 nasm_free(currentfile);
1829 } else {
1830 fputs("nasm: ", error_file);
1831 }
1832
1833 nasm_verror_common(severity, fmt, ap);
1834 }
1835
1836 /**
1837 * MS style error reporting
1838 * This function prints an error message to error_file in the
1839 * style used by Visual C and some other Microsoft tools. An example
1840 * would be:
1841 * file.asm(50) : error: blah blah blah
1842 * where file.asm is the name of the file, 50 is the line number on
1843 * which the error occurs (or is detected) and "error:" is one of
1844 * the possible optional diagnostics -- it can be "error" or "warning"
1845 * or something else. Finally the line terminates with the actual
1846 * error message.
1847 *
1848 * @param severity the severity of the warning or error
1849 * @param fmt the printf style format string
1850 */
1851 static void nasm_verror_vc(int severity, const char *fmt, va_list ap)
1852 {
1853 char *currentfile = NULL;
1854 int32_t lineno = 0;
1855
1856 if (is_suppressed_warning(severity))
1857 return;
1858
1859 if (!(severity & ERR_NOFILE))
1860 src_get(&lineno, &currentfile);
1861
1862 if (currentfile) {
1863 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1864 nasm_free(currentfile);
1865 } else {
1866 fputs("nasm: ", error_file);
1867 }
1868
1869 nasm_verror_common(severity, fmt, ap);
1870 }
1871
1872 /**
1873 * check for supressed warning
1874 * checks for suppressed warning or pass one only warning and we're
1875 * not in pass 1
1876 *
1877 * @param severity the severity of the warning or error
1878 * @return true if we should abort error/warning printing
1879 */
1880 static bool is_suppressed_warning(int severity)
1881 {
1882 /*
1883 * See if it's a suppressed warning.
1884 */
1885 return (severity & ERR_MASK) == ERR_WARNING &&
1886 (((severity & ERR_WARN_MASK) != 0 &&
1887 !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1888 /* See if it's a pass-one only warning and we're not in pass one. */
1889 ((severity & ERR_PASS1) && pass0 != 1) ||
1890 ((severity & ERR_PASS2) && pass0 != 2));
1891 }
1892
1893 /**
1894 * common error reporting
1895 * This is the common back end of the error reporting schemes currently
1896 * implemented. It prints the nature of the warning and then the
1897 * specific error message to error_file and may or may not return. It
1898 * doesn't return if the error severity is a "panic" or "debug" type.
1899 *
1900 * @param severity the severity of the warning or error
1901 * @param fmt the printf style format string
1902 */
1903 static void nasm_verror_common(int severity, const char *fmt, va_list args)
1904 {
1905 char msg[1024];
1906 const char *pfx;
1907
1908 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1909 case ERR_WARNING:
1910 pfx = "warning: ";
1911 break;
1912 case ERR_NONFATAL:
1913 pfx = "error: ";
1914 break;
1915 case ERR_FATAL:
1916 pfx = "fatal: ";
1917 break;
1918 case ERR_PANIC:
1919 pfx = "panic: ";
1920 break;
1921 case ERR_DEBUG:
1922 pfx = "debug: ";
1923 break;
1924 default:
1925 pfx = "";
1926 break;
1927 }
1928
1929 vsnprintf(msg, sizeof msg, fmt, args);
1930
1931 fprintf(error_file, "%s%s\n", pfx, msg);
1932
1933 if (*listname)
1934 nasmlist.error(severity, pfx, msg);
1935
1936 if (severity & ERR_USAGE)
1937 want_usage = true;
1938
1939 switch (severity & ERR_MASK) {
1940 case ERR_DEBUG:
1941 /* no further action, by definition */
1942 break;
1943 case ERR_WARNING:
1944 if (warning_on[0]) /* Treat warnings as errors */
1945 terminate_after_phase = true;
1946 break;
1947 case ERR_NONFATAL:
1948 terminate_after_phase = true;
1949 break;
1950 case ERR_FATAL:
1951 if (ofile) {
1952 fclose(ofile);
1953 remove(outname);
1954 ofile = NULL;
1955 }
1956 if (want_usage)
1957 usage();
1958 exit(1); /* instantly die */
1959 break; /* placate silly compilers */
1960 case ERR_PANIC:
1961 fflush(NULL);
1962 /* abort(); *//* halt, catch fire, and dump core */
1963 exit(3);
1964 break;
1965 }
1966 }
1967
1968 static void usage(void)
1969 {
1970 fputs("type `nasm -h' for help\n", error_file);
1971 }
1972
1973 #define BUF_DELTA 512
1974
1975 static FILE *no_pp_fp;
1976 static ListGen *no_pp_list;
1977 static int32_t no_pp_lineinc;
1978
1979 static void no_pp_reset(char *file, int pass, ListGen * listgen,
1980 StrList **deplist)
1981 {
1982 src_set_fname(nasm_strdup(file));
1983 src_set_linnum(0);
1984 no_pp_lineinc = 1;
1985 no_pp_fp = fopen(file, "r");
1986 if (!no_pp_fp)
1987 nasm_error(ERR_FATAL | ERR_NOFILE,
1988 "unable to open input file `%s'", file);
1989 no_pp_list = listgen;
1990 (void)pass; /* placate compilers */
1991
1992 if (deplist) {
1993 StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
1994 sl->next = NULL;
1995 strcpy(sl->str, file);
1996 *deplist = sl;
1997 }
1998 }
1999
2000 static char *no_pp_getline(void)
2001 {
2002 char *buffer, *p, *q;
2003 int bufsize;
2004
2005 bufsize = BUF_DELTA;
2006 buffer = nasm_malloc(BUF_DELTA);
2007 src_set_linnum(src_get_linnum() + no_pp_lineinc);
2008
2009 while (1) { /* Loop to handle %line */
2010
2011 p = buffer;
2012 while (1) { /* Loop to handle long lines */
2013 q = fgets(p, bufsize - (p - buffer), no_pp_fp);
2014 if (!q)
2015 break;
2016 p += strlen(p);
2017 if (p > buffer && p[-1] == '\n')
2018 break;
2019 if (p - buffer > bufsize - 10) {
2020 int offset;
2021 offset = p - buffer;
2022 bufsize += BUF_DELTA;
2023 buffer = nasm_realloc(buffer, bufsize);
2024 p = buffer + offset;
2025 }
2026 }
2027
2028 if (!q && p == buffer) {
2029 nasm_free(buffer);
2030 return NULL;
2031 }
2032
2033 /*
2034 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
2035 * them are present at the end of the line.
2036 */
2037 buffer[strcspn(buffer, "\r\n\032")] = '\0';
2038
2039 if (!nasm_strnicmp(buffer, "%line", 5)) {
2040 int32_t ln;
2041 int li;
2042 char *nm = nasm_malloc(strlen(buffer));
2043 if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
2044 nasm_free(src_set_fname(nm));
2045 src_set_linnum(ln);
2046 no_pp_lineinc = li;
2047 continue;
2048 }
2049 nasm_free(nm);
2050 }
2051 break;
2052 }
2053
2054 no_pp_list->line(LIST_READ, buffer);
2055
2056 return buffer;
2057 }
2058
2059 static void no_pp_cleanup(int pass)
2060 {
2061 (void)pass; /* placate GCC */
2062 fclose(no_pp_fp);
2063 }
2064
2065 static uint32_t get_cpu(char *value)
2066 {
2067 if (!strcmp(value, "8086"))
2068 return IF_8086;
2069 if (!strcmp(value, "186"))
2070 return IF_186;
2071 if (!strcmp(value, "286"))
2072 return IF_286;
2073 if (!strcmp(value, "386"))
2074 return IF_386;
2075 if (!strcmp(value, "486"))
2076 return IF_486;
2077 if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2078 return IF_PENT;
2079 if (!strcmp(value, "686") ||
2080 !nasm_stricmp(value, "ppro") ||
2081 !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2082 return IF_P6;
2083 if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2084 return IF_KATMAI;
2085 if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2086 !nasm_stricmp(value, "willamette"))
2087 return IF_WILLAMETTE;
2088 if (!nasm_stricmp(value, "prescott"))
2089 return IF_PRESCOTT;
2090 if (!nasm_stricmp(value, "x64") ||
2091 !nasm_stricmp(value, "x86-64"))
2092 return IF_X86_64;
2093 if (!nasm_stricmp(value, "ia64") ||
2094 !nasm_stricmp(value, "ia-64") ||
2095 !nasm_stricmp(value, "itanium") ||
2096 !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2097 return IF_IA64;
2098
2099 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2100 "unknown 'cpu' type");
2101
2102 return IF_PLEVEL; /* the maximum level */
2103 }
2104
2105 static int get_bits(char *value)
2106 {
2107 int i;
2108
2109 if ((i = atoi(value)) == 16)
2110 return i; /* set for a 16-bit segment */
2111 else if (i == 32) {
2112 if (cpu < IF_386) {
2113 nasm_error(ERR_NONFATAL,
2114 "cannot specify 32-bit segment on processor below a 386");
2115 i = 16;
2116 }
2117 } else if (i == 64) {
2118 if (cpu < IF_X86_64) {
2119 nasm_error(ERR_NONFATAL,
2120 "cannot specify 64-bit segment on processor below an x86-64");
2121 i = 16;
2122 }
2123 if (i != maxbits) {
2124 nasm_error(ERR_NONFATAL,
2125 "%s output format does not support 64-bit code",
2126 ofmt->shortname);
2127 i = 16;
2128 }
2129 } else {
2130 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2131 "`%s' is not a valid segment size; must be 16, 32 or 64",
2132 value);
2133 i = 16;
2134 }
2135 return i;
2136 }
2137
2138 /* end of nasm.c */
The Netwide Assembler