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preproc: Drop NULL assignments for static variables
[nasm/sigaren-mirror.git] / nasm.c
blob40ef4f91243d8a516a163cd7566f38d458bce890
1 /* ----------------------------------------------------------------------- *
2 *
3 * Copyright 1996-2011 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 /*
65 * This is the maximum number of optimization passes to do. If we ever
66 * find a case where the optimizer doesn't naturally converge, we might
67 * have to drop this value so the assembler doesn't appear to just hang.
68 */
69 #define MAX_OPTIMIZE (INT_MAX >> 1)
70
71 struct forwrefinfo { /* info held on forward refs. */
72 int lineno;
73 int operand;
74 };
75
76 static int get_bits(char *value);
77 static uint32_t get_cpu(char *cpu_str);
78 static void parse_cmdline(int, char **);
79 static void assemble_file(char *, StrList **);
80 static void nasm_verror_gnu(int severity, const char *fmt, va_list args);
81 static void nasm_verror_vc(int severity, const char *fmt, va_list args);
82 static void nasm_verror_common(int severity, const char *fmt, va_list args);
83 static bool is_suppressed_warning(int severity);
84 static void usage(void);
85
86 static int using_debug_info, opt_verbose_info;
87 bool tasm_compatible_mode = false;
88 int pass0, passn;
89 int maxbits = 0;
90 int globalrel = 0;
91
92 static time_t official_compile_time;
93
94 static char inname[FILENAME_MAX];
95 static char outname[FILENAME_MAX];
96 static char listname[FILENAME_MAX];
97 static char errname[FILENAME_MAX];
98 static int globallineno; /* for forward-reference tracking */
99 /* static int pass = 0; */
100 struct ofmt *ofmt = &OF_DEFAULT;
101 struct ofmt_alias *ofmt_alias = NULL;
102 const struct dfmt *dfmt;
103
104 static FILE *error_file; /* Where to write error messages */
105
106 FILE *ofile = NULL;
107 int optimizing = MAX_OPTIMIZE; /* number of optimization passes to take */
108 static int sb, cmd_sb = 16; /* by default */
109 static uint32_t cmd_cpu = IF_PLEVEL; /* highest level by default */
110 static uint32_t cpu = IF_PLEVEL; /* passed to insn_size & assemble.c */
111 int64_t global_offset_changed; /* referenced in labels.c */
112 int64_t prev_offset_changed;
113 int32_t stall_count;
114
115 static struct location location;
116 int in_abs_seg; /* Flag we are in ABSOLUTE seg */
117 int32_t abs_seg; /* ABSOLUTE segment basis */
118 int32_t abs_offset; /* ABSOLUTE offset */
119
120 static struct RAA *offsets;
121
122 static struct SAA *forwrefs; /* keep track of forward references */
123 static const struct forwrefinfo *forwref;
124
125 static struct preproc_ops *preproc;
126
127 enum op_type {
128 op_normal, /* Preprocess and assemble */
129 op_preprocess, /* Preprocess only */
130 op_depend, /* Generate dependencies */
131 };
132 static enum op_type operating_mode;
133 /* Dependency flags */
134 static bool depend_emit_phony = false;
135 static bool depend_missing_ok = false;
136 static const char *depend_target = NULL;
137 static const char *depend_file = NULL;
138
139 /*
140 * Which of the suppressible warnings are suppressed. Entry zero
141 * isn't an actual warning, but it used for -w+error/-Werror.
142 */
143
144 static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
145 static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
146
147 static const struct warning {
148 const char *name;
149 const char *help;
150 bool enabled;
151 } warnings[ERR_WARN_MAX+1] = {
152 {"error", "treat warnings as errors", false},
153 {"macro-params", "macro calls with wrong parameter count", true},
154 {"macro-selfref", "cyclic macro references", false},
155 {"macro-defaults", "macros with more default than optional parameters", true},
156 {"orphan-labels", "labels alone on lines without trailing `:'", true},
157 {"number-overflow", "numeric constant does not fit", true},
158 {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
159 {"float-overflow", "floating point overflow", true},
160 {"float-denorm", "floating point denormal", false},
161 {"float-underflow", "floating point underflow", false},
162 {"float-toolong", "too many digits in floating-point number", true},
163 {"user", "%warning directives", true},
164 };
165
166 /*
167 * This is a null preprocessor which just copies lines from input
168 * to output. It's used when someone explicitly requests that NASM
169 * not preprocess their source file.
170 */
171
172 static void no_pp_reset(char *file, int pass, ListGen *listgen, StrList **deplist);
173 static char *no_pp_getline(void);
174 static void no_pp_cleanup(int pass);
175
176 static struct preproc_ops no_pp = {
177 no_pp_reset,
178 no_pp_getline,
179 no_pp_cleanup
180 };
181
182 /*
183 * get/set current offset...
184 */
185 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
186 raa_read(offsets,location.segment))
187 #define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
188 (void)(offsets=raa_write(offsets,location.segment,(x))))
189
190 static bool want_usage;
191 static bool terminate_after_phase;
192 int user_nolist = 0; /* fbk 9/2/00 */
193
194 static void nasm_fputs(const char *line, FILE * outfile)
195 {
196 if (outfile) {
197 fputs(line, outfile);
198 putc('\n', outfile);
199 } else
200 puts(line);
201 }
202
203 /* Convert a struct tm to a POSIX-style time constant */
204 static int64_t posix_mktime(struct tm *tm)
205 {
206 int64_t t;
207 int64_t y = tm->tm_year;
208
209 /* See IEEE 1003.1:2004, section 4.14 */
210
211 t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
212 t += tm->tm_yday;
213 t *= 24;
214 t += tm->tm_hour;
215 t *= 60;
216 t += tm->tm_min;
217 t *= 60;
218 t += tm->tm_sec;
219
220 return t;
221 }
222
223 static void define_macros_early(void)
224 {
225 char temp[128];
226 struct tm lt, *lt_p, gm, *gm_p;
227 int64_t posix_time;
228
229 lt_p = localtime(&official_compile_time);
230 if (lt_p) {
231 lt = *lt_p;
232
233 strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", &lt);
234 pp_pre_define(temp);
235 strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", &lt);
236 pp_pre_define(temp);
237 strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", &lt);
238 pp_pre_define(temp);
239 strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", &lt);
240 pp_pre_define(temp);
241 }
242
243 gm_p = gmtime(&official_compile_time);
244 if (gm_p) {
245 gm = *gm_p;
246
247 strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
248 pp_pre_define(temp);
249 strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
250 pp_pre_define(temp);
251 strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
252 pp_pre_define(temp);
253 strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
254 pp_pre_define(temp);
255 }
256
257 if (gm_p)
258 posix_time = posix_mktime(&gm);
259 else if (lt_p)
260 posix_time = posix_mktime(&lt);
261 else
262 posix_time = 0;
263
264 if (posix_time) {
265 snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
266 pp_pre_define(temp);
267 }
268 }
269
270 static void define_macros_late(void)
271 {
272 char temp[128];
273
274 /*
275 * In case if output format is defined by alias
276 * we have to put shortname of the alias itself here
277 * otherwise ABI backward compatibility gets broken.
278 */
279 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s",
280 ofmt_alias ? ofmt_alias->shortname : ofmt->shortname);
281 pp_pre_define(temp);
282 }
283
284 static void emit_dependencies(StrList *list)
285 {
286 FILE *deps;
287 int linepos, len;
288 StrList *l, *nl;
289
290 if (depend_file && strcmp(depend_file, "-")) {
291 deps = fopen(depend_file, "w");
292 if (!deps) {
293 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
294 "unable to write dependency file `%s'", depend_file);
295 return;
296 }
297 } else {
298 deps = stdout;
299 }
300
301 linepos = fprintf(deps, "%s:", depend_target);
302 list_for_each(l, list) {
303 len = strlen(l->str);
304 if (linepos + len > 62) {
305 fprintf(deps, " \\\n ");
306 linepos = 1;
307 }
308 fprintf(deps, " %s", l->str);
309 linepos += len+1;
310 }
311 fprintf(deps, "\n\n");
312
313 list_for_each_safe(l, nl, list) {
314 if (depend_emit_phony)
315 fprintf(deps, "%s:\n\n", l->str);
316 nasm_free(l);
317 }
318
319 if (deps != stdout)
320 fclose(deps);
321 }
322
323 int main(int argc, char **argv)
324 {
325 StrList *depend_list = NULL, **depend_ptr;
326
327 time(&official_compile_time);
328
329 pass0 = 0;
330 want_usage = terminate_after_phase = false;
331 nasm_set_verror(nasm_verror_gnu);
332
333 error_file = stderr;
334
335 tolower_init();
336
337 nasm_init_malloc_error();
338 offsets = raa_init();
339 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
340
341 preproc = &nasmpp;
342 operating_mode = op_normal;
343
344 seg_init();
345
346 /* Define some macros dependent on the runtime, but not
347 on the command line. */
348 define_macros_early();
349
350 parse_cmdline(argc, argv);
351
352 if (terminate_after_phase) {
353 if (want_usage)
354 usage();
355 return 1;
356 }
357
358 /* If debugging info is disabled, suppress any debug calls */
359 if (!using_debug_info)
360 ofmt->current_dfmt = &null_debug_form;
361
362 if (ofmt->stdmac)
363 pp_extra_stdmac(ofmt->stdmac);
364 parser_global_info(&location);
365 eval_global_info(ofmt, lookup_label, &location);
366
367 /* define some macros dependent of command-line */
368 define_macros_late();
369
370 depend_ptr = (depend_file || (operating_mode == op_depend))
371 ? &depend_list : NULL;
372 if (!depend_target)
373 depend_target = outname;
374
375 switch (operating_mode) {
376 case op_depend:
377 {
378 char *line;
379
380 if (depend_missing_ok)
381 pp_include_path(NULL); /* "assume generated" */
382
383 preproc->reset(inname, 0, &nasmlist, depend_ptr);
384 if (outname[0] == '\0')
385 ofmt->filename(inname, outname);
386 ofile = NULL;
387 while ((line = preproc->getline()))
388 nasm_free(line);
389 preproc->cleanup(0);
390 }
391 break;
392
393 case op_preprocess:
394 {
395 char *line;
396 char *file_name = NULL;
397 int32_t prior_linnum = 0;
398 int lineinc = 0;
399
400 if (*outname) {
401 ofile = fopen(outname, "w");
402 if (!ofile)
403 nasm_error(ERR_FATAL | ERR_NOFILE,
404 "unable to open output file `%s'",
405 outname);
406 } else
407 ofile = NULL;
408
409 location.known = false;
410
411 /* pass = 1; */
412 preproc->reset(inname, 3, &nasmlist, depend_ptr);
413
414 while ((line = preproc->getline())) {
415 /*
416 * We generate %line directives if needed for later programs
417 */
418 int32_t linnum = prior_linnum += lineinc;
419 int altline = src_get(&linnum, &file_name);
420 if (altline) {
421 if (altline == 1 && lineinc == 1)
422 nasm_fputs("", ofile);
423 else {
424 lineinc = (altline != -1 || lineinc != 1);
425 fprintf(ofile ? ofile : stdout,
426 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
427 file_name);
428 }
429 prior_linnum = linnum;
430 }
431 nasm_fputs(line, ofile);
432 nasm_free(line);
433 }
434 nasm_free(file_name);
435 preproc->cleanup(0);
436 if (ofile)
437 fclose(ofile);
438 if (ofile && terminate_after_phase)
439 remove(outname);
440 ofile = NULL;
441 }
442 break;
443
444 case op_normal:
445 {
446 /*
447 * We must call ofmt->filename _anyway_, even if the user
448 * has specified their own output file, because some
449 * formats (eg OBJ and COFF) use ofmt->filename to find out
450 * the name of the input file and then put that inside the
451 * file.
452 */
453 ofmt->filename(inname, outname);
454
455 ofile = fopen(outname, (ofmt->flags & OFMT_TEXT) ? "w" : "wb");
456 if (!ofile) {
457 nasm_error(ERR_FATAL | ERR_NOFILE,
458 "unable to open output file `%s'", outname);
459 }
460
461 /*
462 * We must call init_labels() before ofmt->init() since
463 * some object formats will want to define labels in their
464 * init routines. (eg OS/2 defines the FLAT group)
465 */
466 init_labels();
467
468 ofmt->init();
469 dfmt = ofmt->current_dfmt;
470 dfmt->init();
471
472 assemble_file(inname, depend_ptr);
473
474 if (!terminate_after_phase) {
475 ofmt->cleanup(using_debug_info);
476 cleanup_labels();
477 fflush(ofile);
478 if (ferror(ofile)) {
479 nasm_error(ERR_NONFATAL|ERR_NOFILE,
480 "write error on output file `%s'", outname);
481 }
482 }
483
484 if (ofile) {
485 fclose(ofile);
486 if (terminate_after_phase)
487 remove(outname);
488 ofile = NULL;
489 }
490 }
491 break;
492 }
493
494 if (depend_list && !terminate_after_phase)
495 emit_dependencies(depend_list);
496
497 if (want_usage)
498 usage();
499
500 raa_free(offsets);
501 saa_free(forwrefs);
502 eval_cleanup();
503 stdscan_cleanup();
504
505 return terminate_after_phase;
506 }
507
508 /*
509 * Get a parameter for a command line option.
510 * First arg must be in the form of e.g. -f...
511 */
512 static char *get_param(char *p, char *q, bool *advance)
513 {
514 *advance = false;
515 if (p[2]) /* the parameter's in the option */
516 return nasm_skip_spaces(p + 2);
517 if (q && q[0]) {
518 *advance = true;
519 return q;
520 }
521 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
522 "option `-%c' requires an argument", p[1]);
523 return NULL;
524 }
525
526 /*
527 * Copy a filename
528 */
529 static void copy_filename(char *dst, const char *src)
530 {
531 size_t len = strlen(src);
532
533 if (len >= (size_t)FILENAME_MAX) {
534 nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
535 return;
536 }
537 strncpy(dst, src, FILENAME_MAX);
538 }
539
540 /*
541 * Convert a string to Make-safe form
542 */
543 static char *quote_for_make(const char *str)
544 {
545 const char *p;
546 char *os, *q;
547
548 size_t n = 1; /* Terminating zero */
549 size_t nbs = 0;
550
551 if (!str)
552 return NULL;
553
554 for (p = str; *p; p++) {
555 switch (*p) {
556 case ' ':
557 case '\t':
558 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
559 n += nbs + 2;
560 nbs = 0;
561 break;
562 case '$':
563 case '#':
564 nbs = 0;
565 n += 2;
566 break;
567 case '\\':
568 nbs++;
569 n++;
570 break;
571 default:
572 nbs = 0;
573 n++;
574 break;
575 }
576 }
577
578 /* Convert N backslashes at the end of filename to 2N backslashes */
579 if (nbs)
580 n += nbs;
581
582 os = q = nasm_malloc(n);
583
584 nbs = 0;
585 for (p = str; *p; p++) {
586 switch (*p) {
587 case ' ':
588 case '\t':
589 while (nbs--)
590 *q++ = '\\';
591 *q++ = '\\';
592 *q++ = *p;
593 break;
594 case '$':
595 *q++ = *p;
596 *q++ = *p;
597 nbs = 0;
598 break;
599 case '#':
600 *q++ = '\\';
601 *q++ = *p;
602 nbs = 0;
603 break;
604 case '\\':
605 *q++ = *p;
606 nbs++;
607 break;
608 default:
609 *q++ = *p;
610 nbs = 0;
611 break;
612 }
613 }
614 while (nbs--)
615 *q++ = '\\';
616
617 *q = '\0';
618
619 return os;
620 }
621
622 struct textargs {
623 const char *label;
624 int value;
625 };
626
627 #define OPT_PREFIX 0
628 #define OPT_POSTFIX 1
629 struct textargs textopts[] = {
630 {"prefix", OPT_PREFIX},
631 {"postfix", OPT_POSTFIX},
632 {NULL, 0}
633 };
634
635 static bool stopoptions = false;
636 static bool process_arg(char *p, char *q)
637 {
638 char *param;
639 int i;
640 bool advance = false;
641 bool do_warn;
642
643 if (!p || !p[0])
644 return false;
645
646 if (p[0] == '-' && !stopoptions) {
647 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
648 /* These parameters take values */
649 if (!(param = get_param(p, q, &advance)))
650 return advance;
651 }
652
653 switch (p[1]) {
654 case 's':
655 error_file = stdout;
656 break;
657
658 case 'o': /* output file */
659 copy_filename(outname, param);
660 break;
661
662 case 'f': /* output format */
663 ofmt = ofmt_find(param, &ofmt_alias);
664 if (!ofmt) {
665 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
666 "unrecognised output format `%s' - "
667 "use -hf for a list", param);
668 }
669 break;
670
671 case 'O': /* Optimization level */
672 {
673 int opt;
674
675 if (!*param) {
676 /* Naked -O == -Ox */
677 optimizing = MAX_OPTIMIZE;
678 } else {
679 while (*param) {
680 switch (*param) {
681 case '0': case '1': case '2': case '3': case '4':
682 case '5': case '6': case '7': case '8': case '9':
683 opt = strtoul(param, &param, 10);
684
685 /* -O0 -> optimizing == -1, 0.98 behaviour */
686 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
687 if (opt < 2)
688 optimizing = opt - 1;
689 else
690 optimizing = opt;
691 break;
692
693 case 'v':
694 case '+':
695 param++;
696 opt_verbose_info = true;
697 break;
698
699 case 'x':
700 param++;
701 optimizing = MAX_OPTIMIZE;
702 break;
703
704 default:
705 nasm_error(ERR_FATAL,
706 "unknown optimization option -O%c\n",
707 *param);
708 break;
709 }
710 }
711 if (optimizing > MAX_OPTIMIZE)
712 optimizing = MAX_OPTIMIZE;
713 }
714 break;
715 }
716
717 case 'p': /* pre-include */
718 case 'P':
719 pp_pre_include(param);
720 break;
721
722 case 'd': /* pre-define */
723 case 'D':
724 pp_pre_define(param);
725 break;
726
727 case 'u': /* un-define */
728 case 'U':
729 pp_pre_undefine(param);
730 break;
731
732 case 'i': /* include search path */
733 case 'I':
734 pp_include_path(param);
735 break;
736
737 case 'l': /* listing file */
738 copy_filename(listname, param);
739 break;
740
741 case 'Z': /* error messages file */
742 copy_filename(errname, param);
743 break;
744
745 case 'F': /* specify debug format */
746 ofmt->current_dfmt = dfmt_find(ofmt, param);
747 if (!ofmt->current_dfmt) {
748 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
749 "unrecognized debug format `%s' for"
750 " output format `%s'",
751 param, ofmt->shortname);
752 }
753 using_debug_info = true;
754 break;
755
756 case 'X': /* specify error reporting format */
757 if (nasm_stricmp("vc", param) == 0)
758 nasm_set_verror(nasm_verror_vc);
759 else if (nasm_stricmp("gnu", param) == 0)
760 nasm_set_verror(nasm_verror_gnu);
761 else
762 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
763 "unrecognized error reporting format `%s'",
764 param);
765 break;
766
767 case 'g':
768 using_debug_info = true;
769 break;
770
771 case 'h':
772 printf
773 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
774 "[-l listfile]\n"
775 " [options...] [--] filename\n"
776 " or nasm -v for version info\n\n"
777 " -t assemble in SciTech TASM compatible mode\n"
778 " -g generate debug information in selected format\n");
779 printf
780 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
781 " -a don't preprocess (assemble only)\n"
782 " -M generate Makefile dependencies on stdout\n"
783 " -MG d:o, missing files assumed generated\n"
784 " -MF <file> set Makefile dependency file\n"
785 " -MD <file> assemble and generate dependencies\n"
786 " -MT <file> dependency target name\n"
787 " -MQ <file> dependency target name (quoted)\n"
788 " -MP emit phony target\n\n"
789 " -Z<file> redirect error messages to file\n"
790 " -s redirect error messages to stdout\n\n"
791 " -F format select a debugging format\n\n"
792 " -I<path> adds a pathname to the include file path\n");
793 printf
794 (" -O<digit> optimize branch offsets\n"
795 " -O0: No optimization (default)\n"
796 " -O1: Minimal optimization\n"
797 " -Ox: Multipass optimization (recommended)\n\n"
798 " -P<file> pre-includes a file\n"
799 " -D<macro>[=<value>] pre-defines a macro\n"
800 " -U<macro> undefines a macro\n"
801 " -X<format> specifies error reporting format (gnu or vc)\n"
802 " -w+foo enables warning foo (equiv. -Wfoo)\n"
803 " -w-foo disable warning foo (equiv. -Wno-foo)\n\n"
804 "--prefix,--postfix\n"
805 " this options prepend or append the given argument to all\n"
806 " extern and global variables\n\n"
807 "Warnings:\n");
808 for (i = 0; i <= ERR_WARN_MAX; i++)
809 printf(" %-23s %s (default %s)\n",
810 warnings[i].name, warnings[i].help,
811 warnings[i].enabled ? "on" : "off");
812 printf
813 ("\nresponse files should contain command line parameters"
814 ", one per line.\n");
815 if (p[2] == 'f') {
816 printf("\nvalid output formats for -f are"
817 " (`*' denotes default):\n");
818 ofmt_list(ofmt, stdout);
819 } else {
820 printf("\nFor a list of valid output formats, use -hf.\n");
821 printf("For a list of debug formats, use -f <form> -y.\n");
822 }
823 exit(0); /* never need usage message here */
824 break;
825
826 case 'y':
827 printf("\nvalid debug formats for '%s' output format are"
828 " ('*' denotes default):\n", ofmt->shortname);
829 dfmt_list(ofmt, stdout);
830 exit(0);
831 break;
832
833 case 't':
834 tasm_compatible_mode = true;
835 break;
836
837 case 'v':
838 printf("NASM version %s compiled on %s%s\n",
839 nasm_version, nasm_date, nasm_compile_options);
840 exit(0); /* never need usage message here */
841 break;
842
843 case 'e': /* preprocess only */
844 case 'E':
845 operating_mode = op_preprocess;
846 break;
847
848 case 'a': /* assemble only - don't preprocess */
849 preproc = &no_pp;
850 break;
851
852 case 'W':
853 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
854 do_warn = false;
855 param += 3;
856 } else {
857 do_warn = true;
858 }
859 goto set_warning;
860
861 case 'w':
862 if (param[0] != '+' && param[0] != '-') {
863 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
864 "invalid option to `-w'");
865 break;
866 }
867 do_warn = (param[0] == '+');
868 param++;
869
870 set_warning:
871 for (i = 0; i <= ERR_WARN_MAX; i++)
872 if (!nasm_stricmp(param, warnings[i].name))
873 break;
874 if (i <= ERR_WARN_MAX)
875 warning_on_global[i] = do_warn;
876 else if (!nasm_stricmp(param, "all"))
877 for (i = 1; i <= ERR_WARN_MAX; i++)
878 warning_on_global[i] = do_warn;
879 else if (!nasm_stricmp(param, "none"))
880 for (i = 1; i <= ERR_WARN_MAX; i++)
881 warning_on_global[i] = !do_warn;
882 else
883 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
884 "invalid warning `%s'", param);
885 break;
886
887 case 'M':
888 switch (p[2]) {
889 case 0:
890 operating_mode = op_depend;
891 break;
892 case 'G':
893 operating_mode = op_depend;
894 depend_missing_ok = true;
895 break;
896 case 'P':
897 depend_emit_phony = true;
898 break;
899 case 'D':
900 depend_file = q;
901 advance = true;
902 break;
903 case 'T':
904 depend_target = q;
905 advance = true;
906 break;
907 case 'Q':
908 depend_target = quote_for_make(q);
909 advance = true;
910 break;
911 default:
912 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
913 "unknown dependency option `-M%c'", p[2]);
914 break;
915 }
916 if (advance && (!q || !q[0])) {
917 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
918 "option `-M%c' requires a parameter", p[2]);
919 break;
920 }
921 break;
922
923 case '-':
924 {
925 int s;
926
927 if (p[2] == 0) { /* -- => stop processing options */
928 stopoptions = 1;
929 break;
930 }
931 for (s = 0; textopts[s].label; s++) {
932 if (!nasm_stricmp(p + 2, textopts[s].label)) {
933 break;
934 }
935 }
936
937 switch (s) {
938
939 case OPT_PREFIX:
940 case OPT_POSTFIX:
941 {
942 if (!q) {
943 nasm_error(ERR_NONFATAL | ERR_NOFILE |
944 ERR_USAGE,
945 "option `--%s' requires an argument",
946 p + 2);
947 break;
948 } else {
949 advance = 1, param = q;
950 }
951
952 if (s == OPT_PREFIX) {
953 strncpy(lprefix, param, PREFIX_MAX - 1);
954 lprefix[PREFIX_MAX - 1] = 0;
955 break;
956 }
957 if (s == OPT_POSTFIX) {
958 strncpy(lpostfix, param, POSTFIX_MAX - 1);
959 lpostfix[POSTFIX_MAX - 1] = 0;
960 break;
961 }
962 break;
963 }
964 default:
965 {
966 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
967 "unrecognised option `--%s'", p + 2);
968 break;
969 }
970 }
971 break;
972 }
973
974 default:
975 if (!ofmt->setinfo(GI_SWITCH, &p))
976 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
977 "unrecognised option `-%c'", p[1]);
978 break;
979 }
980 } else {
981 if (*inname) {
982 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
983 "more than one input file specified");
984 } else {
985 copy_filename(inname, p);
986 }
987 }
988
989 return advance;
990 }
991
992 #define ARG_BUF_DELTA 128
993
994 static void process_respfile(FILE * rfile)
995 {
996 char *buffer, *p, *q, *prevarg;
997 int bufsize, prevargsize;
998
999 bufsize = prevargsize = ARG_BUF_DELTA;
1000 buffer = nasm_malloc(ARG_BUF_DELTA);
1001 prevarg = nasm_malloc(ARG_BUF_DELTA);
1002 prevarg[0] = '\0';
1003
1004 while (1) { /* Loop to handle all lines in file */
1005 p = buffer;
1006 while (1) { /* Loop to handle long lines */
1007 q = fgets(p, bufsize - (p - buffer), rfile);
1008 if (!q)
1009 break;
1010 p += strlen(p);
1011 if (p > buffer && p[-1] == '\n')
1012 break;
1013 if (p - buffer > bufsize - 10) {
1014 int offset;
1015 offset = p - buffer;
1016 bufsize += ARG_BUF_DELTA;
1017 buffer = nasm_realloc(buffer, bufsize);
1018 p = buffer + offset;
1019 }
1020 }
1021
1022 if (!q && p == buffer) {
1023 if (prevarg[0])
1024 process_arg(prevarg, NULL);
1025 nasm_free(buffer);
1026 nasm_free(prevarg);
1027 return;
1028 }
1029
1030 /*
1031 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1032 * them are present at the end of the line.
1033 */
1034 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
1035
1036 while (p > buffer && nasm_isspace(p[-1]))
1037 *--p = '\0';
1038
1039 p = nasm_skip_spaces(buffer);
1040
1041 if (process_arg(prevarg, p))
1042 *p = '\0';
1043
1044 if ((int) strlen(p) > prevargsize - 10) {
1045 prevargsize += ARG_BUF_DELTA;
1046 prevarg = nasm_realloc(prevarg, prevargsize);
1047 }
1048 strncpy(prevarg, p, prevargsize);
1049 }
1050 }
1051
1052 /* Function to process args from a string of args, rather than the
1053 * argv array. Used by the environment variable and response file
1054 * processing.
1055 */
1056 static void process_args(char *args)
1057 {
1058 char *p, *q, *arg, *prevarg;
1059 char separator = ' ';
1060
1061 p = args;
1062 if (*p && *p != '-')
1063 separator = *p++;
1064 arg = NULL;
1065 while (*p) {
1066 q = p;
1067 while (*p && *p != separator)
1068 p++;
1069 while (*p == separator)
1070 *p++ = '\0';
1071 prevarg = arg;
1072 arg = q;
1073 if (process_arg(prevarg, arg))
1074 arg = NULL;
1075 }
1076 if (arg)
1077 process_arg(arg, NULL);
1078 }
1079
1080 static void process_response_file(const char *file)
1081 {
1082 char str[2048];
1083 FILE *f = fopen(file, "r");
1084 if (!f) {
1085 perror(file);
1086 exit(-1);
1087 }
1088 while (fgets(str, sizeof str, f)) {
1089 process_args(str);
1090 }
1091 fclose(f);
1092 }
1093
1094 static void parse_cmdline(int argc, char **argv)
1095 {
1096 FILE *rfile;
1097 char *envreal, *envcopy = NULL, *p;
1098 int i;
1099
1100 *inname = *outname = *listname = *errname = '\0';
1101 for (i = 0; i <= ERR_WARN_MAX; i++)
1102 warning_on_global[i] = warnings[i].enabled;
1103
1104 /*
1105 * First, process the NASMENV environment variable.
1106 */
1107 envreal = getenv("NASMENV");
1108 if (envreal) {
1109 envcopy = nasm_strdup(envreal);
1110 process_args(envcopy);
1111 nasm_free(envcopy);
1112 }
1113
1114 /*
1115 * Now process the actual command line.
1116 */
1117 while (--argc) {
1118 bool advance;
1119 argv++;
1120 if (argv[0][0] == '@') {
1121 /* We have a response file, so process this as a set of
1122 * arguments like the environment variable. This allows us
1123 * to have multiple arguments on a single line, which is
1124 * different to the -@resp file processing below for regular
1125 * NASM.
1126 */
1127 process_response_file(argv[0]+1);
1128 argc--;
1129 argv++;
1130 }
1131 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1132 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1133 if (p) {
1134 rfile = fopen(p, "r");
1135 if (rfile) {
1136 process_respfile(rfile);
1137 fclose(rfile);
1138 } else
1139 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1140 "unable to open response file `%s'", p);
1141 }
1142 } else
1143 advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1144 argv += advance, argc -= advance;
1145 }
1146
1147 /* Look for basic command line typos. This definitely doesn't
1148 catch all errors, but it might help cases of fumbled fingers. */
1149 if (!*inname)
1150 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1151 "no input file specified");
1152 else if (!strcmp(inname, errname) ||
1153 !strcmp(inname, outname) ||
1154 !strcmp(inname, listname) ||
1155 (depend_file && !strcmp(inname, depend_file)))
1156 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1157 "file `%s' is both input and output file",
1158 inname);
1159
1160 if (*errname) {
1161 error_file = fopen(errname, "w");
1162 if (!error_file) {
1163 error_file = stderr; /* Revert to default! */
1164 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1165 "cannot open file `%s' for error messages",
1166 errname);
1167 }
1168 }
1169 }
1170
1171 static enum directives getkw(char **directive, char **value);
1172
1173 static void assemble_file(char *fname, StrList **depend_ptr)
1174 {
1175 char *directive, *value, *p, *q, *special, *line;
1176 insn output_ins;
1177 int i, validid;
1178 bool rn_error;
1179 int32_t seg;
1180 int64_t offs;
1181 struct tokenval tokval;
1182 expr *e;
1183 int pass_max;
1184
1185 if (cmd_sb == 32 && cmd_cpu < IF_386)
1186 nasm_error(ERR_FATAL, "command line: "
1187 "32-bit segment size requires a higher cpu");
1188
1189 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1190 for (passn = 1; pass0 <= 2; passn++) {
1191 int pass1, pass2;
1192 ldfunc def_label;
1193
1194 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1195 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1196 /* pass0 0, 0, 0, ..., 1, 2 */
1197
1198 def_label = passn > 1 ? redefine_label : define_label;
1199
1200 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1201 cpu = cmd_cpu;
1202 if (pass0 == 2) {
1203 if (*listname)
1204 nasmlist.init(listname, nasm_error);
1205 }
1206 in_abs_seg = false;
1207 global_offset_changed = 0; /* set by redefine_label */
1208 location.segment = ofmt->section(NULL, pass2, &sb);
1209 globalbits = sb;
1210 if (passn > 1) {
1211 saa_rewind(forwrefs);
1212 forwref = saa_rstruct(forwrefs);
1213 raa_free(offsets);
1214 offsets = raa_init();
1215 }
1216 preproc->reset(fname, pass1, &nasmlist,
1217 pass1 == 2 ? depend_ptr : NULL);
1218 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1219
1220 globallineno = 0;
1221 if (passn == 1)
1222 location.known = true;
1223 location.offset = offs = GET_CURR_OFFS;
1224
1225 while ((line = preproc->getline())) {
1226 enum directives d;
1227 globallineno++;
1228
1229 /*
1230 * Here we parse our directives; this is not handled by the
1231 * 'real' parser. This really should be a separate function.
1232 */
1233 directive = line;
1234 d = getkw(&directive, &value);
1235 if (d) {
1236 int err = 0;
1237
1238 switch (d) {
1239 case D_SEGMENT: /* [SEGMENT n] */
1240 case D_SECTION:
1241 seg = ofmt->section(value, pass2, &sb);
1242 if (seg == NO_SEG) {
1243 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1244 "segment name `%s' not recognized",
1245 value);
1246 } else {
1247 in_abs_seg = false;
1248 location.segment = seg;
1249 }
1250 break;
1251 case D_SECTALIGN: /* [SECTALIGN n] */
1252 if (*value) {
1253 stdscan_reset();
1254 stdscan_set(value);
1255 tokval.t_type = TOKEN_INVALID;
1256 e = evaluate(stdscan, NULL, &tokval, NULL, pass2, nasm_error, NULL);
1257 if (e) {
1258 unsigned int align = (unsigned int)e->value;
1259 if ((uint64_t)e->value > 0x7fffffff) {
1260 /*
1261 * FIXME: Please make some sane message here
1262 * ofmt should have some 'check' method which
1263 * would report segment alignment bounds.
1264 */
1265 nasm_error(ERR_FATAL,
1266 "incorrect segment alignment `%s'", value);
1267 } else if (!is_power2(align)) {
1268 nasm_error(ERR_NONFATAL,
1269 "segment alignment `%s' is not power of two",
1270 value);
1271 }
1272 /* callee should be able to handle all details */
1273 ofmt->sectalign(location.segment, align);
1274 }
1275 }
1276 break;
1277 case D_EXTERN: /* [EXTERN label:special] */
1278 if (*value == '$')
1279 value++; /* skip initial $ if present */
1280 if (pass0 == 2) {
1281 q = value;
1282 while (*q && *q != ':')
1283 q++;
1284 if (*q == ':') {
1285 *q++ = '\0';
1286 ofmt->symdef(value, 0L, 0L, 3, q);
1287 }
1288 } else if (passn == 1) {
1289 q = value;
1290 validid = true;
1291 if (!isidstart(*q))
1292 validid = false;
1293 while (*q && *q != ':') {
1294 if (!isidchar(*q))
1295 validid = false;
1296 q++;
1297 }
1298 if (!validid) {
1299 nasm_error(ERR_NONFATAL,
1300 "identifier expected after EXTERN");
1301 break;
1302 }
1303 if (*q == ':') {
1304 *q++ = '\0';
1305 special = q;
1306 } else
1307 special = NULL;
1308 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1309 int temp = pass0;
1310 pass0 = 1; /* fake pass 1 in labels.c */
1311 declare_as_global(value, special);
1312 define_label(value, seg_alloc(), 0L, NULL,
1313 false, true);
1314 pass0 = temp;
1315 }
1316 } /* else pass0 == 1 */
1317 break;
1318 case D_BITS: /* [BITS bits] */
1319 globalbits = sb = get_bits(value);
1320 break;
1321 case D_GLOBAL: /* [GLOBAL symbol:special] */
1322 if (*value == '$')
1323 value++; /* skip initial $ if present */
1324 if (pass0 == 2) { /* pass 2 */
1325 q = value;
1326 while (*q && *q != ':')
1327 q++;
1328 if (*q == ':') {
1329 *q++ = '\0';
1330 ofmt->symdef(value, 0L, 0L, 3, q);
1331 }
1332 } else if (pass2 == 1) { /* pass == 1 */
1333 q = value;
1334 validid = true;
1335 if (!isidstart(*q))
1336 validid = false;
1337 while (*q && *q != ':') {
1338 if (!isidchar(*q))
1339 validid = false;
1340 q++;
1341 }
1342 if (!validid) {
1343 nasm_error(ERR_NONFATAL,
1344 "identifier expected after GLOBAL");
1345 break;
1346 }
1347 if (*q == ':') {
1348 *q++ = '\0';
1349 special = q;
1350 } else
1351 special = NULL;
1352 declare_as_global(value, special);
1353 } /* pass == 1 */
1354 break;
1355 case D_COMMON: /* [COMMON symbol size:special] */
1356 {
1357 int64_t size;
1358
1359 if (*value == '$')
1360 value++; /* skip initial $ if present */
1361 p = value;
1362 validid = true;
1363 if (!isidstart(*p))
1364 validid = false;
1365 while (*p && !nasm_isspace(*p)) {
1366 if (!isidchar(*p))
1367 validid = false;
1368 p++;
1369 }
1370 if (!validid) {
1371 nasm_error(ERR_NONFATAL,
1372 "identifier expected after COMMON");
1373 break;
1374 }
1375 if (*p) {
1376 p = nasm_zap_spaces_fwd(p);
1377 q = p;
1378 while (*q && *q != ':')
1379 q++;
1380 if (*q == ':') {
1381 *q++ = '\0';
1382 special = q;
1383 } else {
1384 special = NULL;
1385 }
1386 size = readnum(p, &rn_error);
1387 if (rn_error) {
1388 nasm_error(ERR_NONFATAL,
1389 "invalid size specified"
1390 " in COMMON declaration");
1391 break;
1392 }
1393 } else {
1394 nasm_error(ERR_NONFATAL,
1395 "no size specified in"
1396 " COMMON declaration");
1397 break;
1398 }
1399
1400 if (pass0 < 2) {
1401 define_common(value, seg_alloc(), size, special);
1402 } else if (pass0 == 2) {
1403 if (special)
1404 ofmt->symdef(value, 0L, 0L, 3, special);
1405 }
1406 break;
1407 }
1408 case D_ABSOLUTE: /* [ABSOLUTE address] */
1409 stdscan_reset();
1410 stdscan_set(value);
1411 tokval.t_type = TOKEN_INVALID;
1412 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1413 nasm_error, NULL);
1414 if (e) {
1415 if (!is_reloc(e))
1416 nasm_error(pass0 ==
1417 1 ? ERR_NONFATAL : ERR_PANIC,
1418 "cannot use non-relocatable expression as "
1419 "ABSOLUTE address");
1420 else {
1421 abs_seg = reloc_seg(e);
1422 abs_offset = reloc_value(e);
1423 }
1424 } else if (passn == 1)
1425 abs_offset = 0x100; /* don't go near zero in case of / */
1426 else
1427 nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
1428 "in pass two");
1429 in_abs_seg = true;
1430 location.segment = NO_SEG;
1431 break;
1432 case D_DEBUG: /* [DEBUG] */
1433 {
1434 char debugid[128];
1435 bool badid, overlong;
1436
1437 p = value;
1438 q = debugid;
1439 badid = overlong = false;
1440 if (!isidstart(*p)) {
1441 badid = true;
1442 } else {
1443 while (*p && !nasm_isspace(*p)) {
1444 if (q >= debugid + sizeof debugid - 1) {
1445 overlong = true;
1446 break;
1447 }
1448 if (!isidchar(*p))
1449 badid = true;
1450 *q++ = *p++;
1451 }
1452 *q = 0;
1453 }
1454 if (badid) {
1455 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1456 "identifier expected after DEBUG");
1457 break;
1458 }
1459 if (overlong) {
1460 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1461 "DEBUG identifier too long");
1462 break;
1463 }
1464 p = nasm_skip_spaces(p);
1465 if (pass0 == 2)
1466 dfmt->debug_directive(debugid, p);
1467 break;
1468 }
1469 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1470 value = nasm_skip_spaces(value);
1471 switch(*value) {
1472 case '-': validid = 0; value++; break;
1473 case '+': validid = 1; value++; break;
1474 case '*': validid = 2; value++; break;
1475 default: validid = 1; break;
1476 }
1477
1478 for (i = 1; i <= ERR_WARN_MAX; i++)
1479 if (!nasm_stricmp(value, warnings[i].name))
1480 break;
1481 if (i <= ERR_WARN_MAX) {
1482 switch(validid) {
1483 case 0:
1484 warning_on[i] = false;
1485 break;
1486 case 1:
1487 warning_on[i] = true;
1488 break;
1489 case 2:
1490 warning_on[i] = warning_on_global[i];
1491 break;
1492 }
1493 }
1494 else
1495 nasm_error(ERR_NONFATAL,
1496 "invalid warning id in WARNING directive");
1497 break;
1498 case D_CPU: /* [CPU] */
1499 cpu = get_cpu(value);
1500 break;
1501 case D_LIST: /* [LIST {+|-}] */
1502 value = nasm_skip_spaces(value);
1503 if (*value == '+') {
1504 user_nolist = 0;
1505 } else {
1506 if (*value == '-') {
1507 user_nolist = 1;
1508 } else {
1509 err = 1;
1510 }
1511 }
1512 break;
1513 case D_DEFAULT: /* [DEFAULT] */
1514 stdscan_reset();
1515 stdscan_set(value);
1516 tokval.t_type = TOKEN_INVALID;
1517 if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1518 switch ((int)tokval.t_integer) {
1519 case S_REL:
1520 globalrel = 1;
1521 break;
1522 case S_ABS:
1523 globalrel = 0;
1524 break;
1525 default:
1526 err = 1;
1527 break;
1528 }
1529 } else {
1530 err = 1;
1531 }
1532 break;
1533 case D_FLOAT:
1534 if (float_option(value)) {
1535 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1536 "unknown 'float' directive: %s",
1537 value);
1538 }
1539 break;
1540 default:
1541 if (ofmt->directive(d, value, pass2))
1542 break;
1543 /* else fall through */
1544 case D_unknown:
1545 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1546 "unrecognised directive [%s]",
1547 directive);
1548 break;
1549 }
1550 if (err) {
1551 nasm_error(ERR_NONFATAL,
1552 "invalid parameter to [%s] directive",
1553 directive);
1554 }
1555 } else { /* it isn't a directive */
1556 parse_line(pass1, line, &output_ins, def_label);
1557
1558 if (optimizing > 0) {
1559 if (forwref != NULL && globallineno == forwref->lineno) {
1560 output_ins.forw_ref = true;
1561 do {
1562 output_ins.oprs[forwref->operand].opflags |= OPFLAG_FORWARD;
1563 forwref = saa_rstruct(forwrefs);
1564 } while (forwref != NULL
1565 && forwref->lineno == globallineno);
1566 } else
1567 output_ins.forw_ref = false;
1568
1569 if (output_ins.forw_ref) {
1570 if (passn == 1) {
1571 for (i = 0; i < output_ins.operands; i++) {
1572 if (output_ins.oprs[i].opflags & OPFLAG_FORWARD) {
1573 struct forwrefinfo *fwinf =
1574 (struct forwrefinfo *)
1575 saa_wstruct(forwrefs);
1576 fwinf->lineno = globallineno;
1577 fwinf->operand = i;
1578 }
1579 }
1580 }
1581 }
1582 }
1583
1584 /* forw_ref */
1585 if (output_ins.opcode == I_EQU) {
1586 if (pass1 == 1) {
1587 /*
1588 * Special `..' EQUs get processed in pass two,
1589 * except `..@' macro-processor EQUs which are done
1590 * in the normal place.
1591 */
1592 if (!output_ins.label)
1593 nasm_error(ERR_NONFATAL,
1594 "EQU not preceded by label");
1595
1596 else if (output_ins.label[0] != '.' ||
1597 output_ins.label[1] != '.' ||
1598 output_ins.label[2] == '@') {
1599 if (output_ins.operands == 1 &&
1600 (output_ins.oprs[0].type & IMMEDIATE) &&
1601 output_ins.oprs[0].wrt == NO_SEG) {
1602 bool isext = !!(output_ins.oprs[0].opflags
1603 & OPFLAG_EXTERN);
1604 def_label(output_ins.label,
1605 output_ins.oprs[0].segment,
1606 output_ins.oprs[0].offset, NULL,
1607 false, isext);
1608 } else if (output_ins.operands == 2
1609 && (output_ins.oprs[0].type & IMMEDIATE)
1610 && (output_ins.oprs[0].type & COLON)
1611 && output_ins.oprs[0].segment == NO_SEG
1612 && output_ins.oprs[0].wrt == NO_SEG
1613 && (output_ins.oprs[1].type & IMMEDIATE)
1614 && output_ins.oprs[1].segment == NO_SEG
1615 && output_ins.oprs[1].wrt == NO_SEG) {
1616 def_label(output_ins.label,
1617 output_ins.oprs[0].offset | SEG_ABS,
1618 output_ins.oprs[1].offset,
1619 NULL, false, false);
1620 } else
1621 nasm_error(ERR_NONFATAL,
1622 "bad syntax for EQU");
1623 }
1624 } else {
1625 /*
1626 * Special `..' EQUs get processed here, except
1627 * `..@' macro processor EQUs which are done above.
1628 */
1629 if (output_ins.label[0] == '.' &&
1630 output_ins.label[1] == '.' &&
1631 output_ins.label[2] != '@') {
1632 if (output_ins.operands == 1 &&
1633 (output_ins.oprs[0].type & IMMEDIATE)) {
1634 define_label(output_ins.label,
1635 output_ins.oprs[0].segment,
1636 output_ins.oprs[0].offset,
1637 NULL, false, false);
1638 } else if (output_ins.operands == 2
1639 && (output_ins.oprs[0].type & IMMEDIATE)
1640 && (output_ins.oprs[0].type & COLON)
1641 && output_ins.oprs[0].segment == NO_SEG
1642 && (output_ins.oprs[1].type & IMMEDIATE)
1643 && output_ins.oprs[1].segment == NO_SEG) {
1644 define_label(output_ins.label,
1645 output_ins.oprs[0].offset | SEG_ABS,
1646 output_ins.oprs[1].offset,
1647 NULL, false, false);
1648 } else
1649 nasm_error(ERR_NONFATAL,
1650 "bad syntax for EQU");
1651 }
1652 }
1653 } else { /* instruction isn't an EQU */
1654
1655 if (pass1 == 1) {
1656
1657 int64_t l = insn_size(location.segment, offs, sb, cpu,
1658 &output_ins, nasm_error);
1659
1660 /* if (using_debug_info) && output_ins.opcode != -1) */
1661 if (using_debug_info)
1662 { /* fbk 03/25/01 */
1663 /* this is done here so we can do debug type info */
1664 int32_t typeinfo =
1665 TYS_ELEMENTS(output_ins.operands);
1666 switch (output_ins.opcode) {
1667 case I_RESB:
1668 typeinfo =
1669 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_BYTE;
1670 break;
1671 case I_RESW:
1672 typeinfo =
1673 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_WORD;
1674 break;
1675 case I_RESD:
1676 typeinfo =
1677 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_DWORD;
1678 break;
1679 case I_RESQ:
1680 typeinfo =
1681 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_QWORD;
1682 break;
1683 case I_REST:
1684 typeinfo =
1685 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_TBYTE;
1686 break;
1687 case I_RESO:
1688 typeinfo =
1689 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_OWORD;
1690 break;
1691 case I_RESY:
1692 typeinfo =
1693 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_YWORD;
1694 break;
1695 case I_DB:
1696 typeinfo |= TY_BYTE;
1697 break;
1698 case I_DW:
1699 typeinfo |= TY_WORD;
1700 break;
1701 case I_DD:
1702 if (output_ins.eops_float)
1703 typeinfo |= TY_FLOAT;
1704 else
1705 typeinfo |= TY_DWORD;
1706 break;
1707 case I_DQ:
1708 typeinfo |= TY_QWORD;
1709 break;
1710 case I_DT:
1711 typeinfo |= TY_TBYTE;
1712 break;
1713 case I_DO:
1714 typeinfo |= TY_OWORD;
1715 break;
1716 case I_DY:
1717 typeinfo |= TY_YWORD;
1718 break;
1719 default:
1720 typeinfo = TY_LABEL;
1721
1722 }
1723
1724 dfmt->debug_typevalue(typeinfo);
1725 }
1726 if (l != -1) {
1727 offs += l;
1728 SET_CURR_OFFS(offs);
1729 }
1730 /*
1731 * else l == -1 => invalid instruction, which will be
1732 * flagged as an error on pass 2
1733 */
1734
1735 } else {
1736 offs += assemble(location.segment, offs, sb, cpu,
1737 &output_ins, ofmt, nasm_error,
1738 &nasmlist);
1739 SET_CURR_OFFS(offs);
1740
1741 }
1742 } /* not an EQU */
1743 cleanup_insn(&output_ins);
1744 }
1745 nasm_free(line);
1746 location.offset = offs = GET_CURR_OFFS;
1747 } /* end while (line = preproc->getline... */
1748
1749 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1750 nasm_error(ERR_NONFATAL,
1751 "phase error detected at end of assembly.");
1752
1753 if (pass1 == 1)
1754 preproc->cleanup(1);
1755
1756 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1757 pass0++;
1758 } else if (global_offset_changed &&
1759 global_offset_changed < prev_offset_changed) {
1760 prev_offset_changed = global_offset_changed;
1761 stall_count = 0;
1762 } else {
1763 stall_count++;
1764 }
1765
1766 if (terminate_after_phase)
1767 break;
1768
1769 if ((stall_count > 997) || (passn >= pass_max)) {
1770 /* We get here if the labels don't converge
1771 * Example: FOO equ FOO + 1
1772 */
1773 nasm_error(ERR_NONFATAL,
1774 "Can't find valid values for all labels "
1775 "after %d passes, giving up.", passn);
1776 nasm_error(ERR_NONFATAL,
1777 "Possible causes: recursive EQUs, macro abuse.");
1778 break;
1779 }
1780 }
1781
1782 preproc->cleanup(0);
1783 nasmlist.cleanup();
1784 if (!terminate_after_phase && opt_verbose_info) {
1785 /* -On and -Ov switches */
1786 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1787 }
1788 }
1789
1790 static enum directives getkw(char **directive, char **value)
1791 {
1792 char *p, *q, *buf;
1793
1794 buf = nasm_skip_spaces(*directive);
1795
1796 /* it should be enclosed in [ ] */
1797 if (*buf != '[')
1798 return D_none;
1799 q = strchr(buf, ']');
1800 if (!q)
1801 return D_none;
1802
1803 /* stip off the comments */
1804 p = strchr(buf, ';');
1805 if (p) {
1806 if (p < q) /* ouch! somwhere inside */
1807 return D_none;
1808 *p = '\0';
1809 }
1810
1811 /* no brace, no trailing spaces */
1812 *q = '\0';
1813 nasm_zap_spaces_rev(--q);
1814
1815 /* directive */
1816 p = nasm_skip_spaces(++buf);
1817 q = nasm_skip_word(p);
1818 if (!q)
1819 return D_none; /* sigh... no value there */
1820 *q = '\0';
1821 *directive = p;
1822
1823 /* and value finally */
1824 p = nasm_skip_spaces(++q);
1825 *value = p;
1826
1827 return find_directive(*directive);
1828 }
1829
1830 /**
1831 * gnu style error reporting
1832 * This function prints an error message to error_file in the
1833 * style used by GNU. An example would be:
1834 * file.asm:50: error: blah blah blah
1835 * where file.asm is the name of the file, 50 is the line number on
1836 * which the error occurs (or is detected) and "error:" is one of
1837 * the possible optional diagnostics -- it can be "error" or "warning"
1838 * or something else. Finally the line terminates with the actual
1839 * error message.
1840 *
1841 * @param severity the severity of the warning or error
1842 * @param fmt the printf style format string
1843 */
1844 static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
1845 {
1846 char *currentfile = NULL;
1847 int32_t lineno = 0;
1848
1849 if (is_suppressed_warning(severity))
1850 return;
1851
1852 if (!(severity & ERR_NOFILE))
1853 src_get(&lineno, &currentfile);
1854
1855 if (currentfile) {
1856 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1857 nasm_free(currentfile);
1858 } else {
1859 fputs("nasm: ", error_file);
1860 }
1861
1862 nasm_verror_common(severity, fmt, ap);
1863 }
1864
1865 /**
1866 * MS style error reporting
1867 * This function prints an error message to error_file in the
1868 * style used by Visual C and some other Microsoft tools. An example
1869 * would be:
1870 * file.asm(50) : error: blah blah blah
1871 * where file.asm is the name of the file, 50 is the line number on
1872 * which the error occurs (or is detected) and "error:" is one of
1873 * the possible optional diagnostics -- it can be "error" or "warning"
1874 * or something else. Finally the line terminates with the actual
1875 * error message.
1876 *
1877 * @param severity the severity of the warning or error
1878 * @param fmt the printf style format string
1879 */
1880 static void nasm_verror_vc(int severity, const char *fmt, va_list ap)
1881 {
1882 char *currentfile = NULL;
1883 int32_t lineno = 0;
1884
1885 if (is_suppressed_warning(severity))
1886 return;
1887
1888 if (!(severity & ERR_NOFILE))
1889 src_get(&lineno, &currentfile);
1890
1891 if (currentfile) {
1892 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1893 nasm_free(currentfile);
1894 } else {
1895 fputs("nasm: ", error_file);
1896 }
1897
1898 nasm_verror_common(severity, fmt, ap);
1899 }
1900
1901 /**
1902 * check for supressed warning
1903 * checks for suppressed warning or pass one only warning and we're
1904 * not in pass 1
1905 *
1906 * @param severity the severity of the warning or error
1907 * @return true if we should abort error/warning printing
1908 */
1909 static bool is_suppressed_warning(int severity)
1910 {
1911 /*
1912 * See if it's a suppressed warning.
1913 */
1914 return (severity & ERR_MASK) == ERR_WARNING &&
1915 (((severity & ERR_WARN_MASK) != 0 &&
1916 !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1917 /* See if it's a pass-one only warning and we're not in pass one. */
1918 ((severity & ERR_PASS1) && pass0 != 1) ||
1919 ((severity & ERR_PASS2) && pass0 != 2));
1920 }
1921
1922 /**
1923 * common error reporting
1924 * This is the common back end of the error reporting schemes currently
1925 * implemented. It prints the nature of the warning and then the
1926 * specific error message to error_file and may or may not return. It
1927 * doesn't return if the error severity is a "panic" or "debug" type.
1928 *
1929 * @param severity the severity of the warning or error
1930 * @param fmt the printf style format string
1931 */
1932 static void nasm_verror_common(int severity, const char *fmt, va_list args)
1933 {
1934 char msg[1024];
1935 const char *pfx;
1936
1937 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1938 case ERR_WARNING:
1939 pfx = "warning: ";
1940 break;
1941 case ERR_NONFATAL:
1942 pfx = "error: ";
1943 break;
1944 case ERR_FATAL:
1945 pfx = "fatal: ";
1946 break;
1947 case ERR_PANIC:
1948 pfx = "panic: ";
1949 break;
1950 case ERR_DEBUG:
1951 pfx = "debug: ";
1952 break;
1953 default:
1954 pfx = "";
1955 break;
1956 }
1957
1958 vsnprintf(msg, sizeof msg, fmt, args);
1959
1960 fprintf(error_file, "%s%s\n", pfx, msg);
1961
1962 if (*listname)
1963 nasmlist.error(severity, pfx, msg);
1964
1965 if (severity & ERR_USAGE)
1966 want_usage = true;
1967
1968 switch (severity & ERR_MASK) {
1969 case ERR_DEBUG:
1970 /* no further action, by definition */
1971 break;
1972 case ERR_WARNING:
1973 if (warning_on[0]) /* Treat warnings as errors */
1974 terminate_after_phase = true;
1975 break;
1976 case ERR_NONFATAL:
1977 terminate_after_phase = true;
1978 break;
1979 case ERR_FATAL:
1980 if (ofile) {
1981 fclose(ofile);
1982 remove(outname);
1983 ofile = NULL;
1984 }
1985 if (want_usage)
1986 usage();
1987 exit(1); /* instantly die */
1988 break; /* placate silly compilers */
1989 case ERR_PANIC:
1990 fflush(NULL);
1991 /* abort(); *//* halt, catch fire, and dump core */
1992 exit(3);
1993 break;
1994 }
1995 }
1996
1997 static void usage(void)
1998 {
1999 fputs("type `nasm -h' for help\n", error_file);
2000 }
2001
2002 #define BUF_DELTA 512
2003
2004 static FILE *no_pp_fp;
2005 static ListGen *no_pp_list;
2006 static int32_t no_pp_lineinc;
2007
2008 static void no_pp_reset(char *file, int pass, ListGen * listgen,
2009 StrList **deplist)
2010 {
2011 src_set_fname(nasm_strdup(file));
2012 src_set_linnum(0);
2013 no_pp_lineinc = 1;
2014 no_pp_fp = fopen(file, "r");
2015 if (!no_pp_fp)
2016 nasm_error(ERR_FATAL | ERR_NOFILE,
2017 "unable to open input file `%s'", file);
2018 no_pp_list = listgen;
2019 (void)pass; /* placate compilers */
2020
2021 if (deplist) {
2022 StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
2023 sl->next = NULL;
2024 strcpy(sl->str, file);
2025 *deplist = sl;
2026 }
2027 }
2028
2029 static char *no_pp_getline(void)
2030 {
2031 char *buffer, *p, *q;
2032 int bufsize;
2033
2034 bufsize = BUF_DELTA;
2035 buffer = nasm_malloc(BUF_DELTA);
2036 src_set_linnum(src_get_linnum() + no_pp_lineinc);
2037
2038 while (1) { /* Loop to handle %line */
2039
2040 p = buffer;
2041 while (1) { /* Loop to handle long lines */
2042 q = fgets(p, bufsize - (p - buffer), no_pp_fp);
2043 if (!q)
2044 break;
2045 p += strlen(p);
2046 if (p > buffer && p[-1] == '\n')
2047 break;
2048 if (p - buffer > bufsize - 10) {
2049 int offset;
2050 offset = p - buffer;
2051 bufsize += BUF_DELTA;
2052 buffer = nasm_realloc(buffer, bufsize);
2053 p = buffer + offset;
2054 }
2055 }
2056
2057 if (!q && p == buffer) {
2058 nasm_free(buffer);
2059 return NULL;
2060 }
2061
2062 /*
2063 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
2064 * them are present at the end of the line.
2065 */
2066 buffer[strcspn(buffer, "\r\n\032")] = '\0';
2067
2068 if (!nasm_strnicmp(buffer, "%line", 5)) {
2069 int32_t ln;
2070 int li;
2071 char *nm = nasm_malloc(strlen(buffer));
2072 if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
2073 nasm_free(src_set_fname(nm));
2074 src_set_linnum(ln);
2075 no_pp_lineinc = li;
2076 continue;
2077 }
2078 nasm_free(nm);
2079 }
2080 break;
2081 }
2082
2083 no_pp_list->line(LIST_READ, buffer);
2084
2085 return buffer;
2086 }
2087
2088 static void no_pp_cleanup(int pass)
2089 {
2090 (void)pass; /* placate GCC */
2091 if (no_pp_fp) {
2092 fclose(no_pp_fp);
2093 no_pp_fp = NULL;
2094 }
2095 }
2096
2097 static uint32_t get_cpu(char *value)
2098 {
2099 if (!strcmp(value, "8086"))
2100 return IF_8086;
2101 if (!strcmp(value, "186"))
2102 return IF_186;
2103 if (!strcmp(value, "286"))
2104 return IF_286;
2105 if (!strcmp(value, "386"))
2106 return IF_386;
2107 if (!strcmp(value, "486"))
2108 return IF_486;
2109 if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2110 return IF_PENT;
2111 if (!strcmp(value, "686") ||
2112 !nasm_stricmp(value, "ppro") ||
2113 !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2114 return IF_P6;
2115 if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2116 return IF_KATMAI;
2117 if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2118 !nasm_stricmp(value, "willamette"))
2119 return IF_WILLAMETTE;
2120 if (!nasm_stricmp(value, "prescott"))
2121 return IF_PRESCOTT;
2122 if (!nasm_stricmp(value, "x64") ||
2123 !nasm_stricmp(value, "x86-64"))
2124 return IF_X86_64;
2125 if (!nasm_stricmp(value, "ia64") ||
2126 !nasm_stricmp(value, "ia-64") ||
2127 !nasm_stricmp(value, "itanium") ||
2128 !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2129 return IF_IA64;
2130
2131 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2132 "unknown 'cpu' type");
2133
2134 return IF_PLEVEL; /* the maximum level */
2135 }
2136
2137 static int get_bits(char *value)
2138 {
2139 int i;
2140
2141 if ((i = atoi(value)) == 16)
2142 return i; /* set for a 16-bit segment */
2143 else if (i == 32) {
2144 if (cpu < IF_386) {
2145 nasm_error(ERR_NONFATAL,
2146 "cannot specify 32-bit segment on processor below a 386");
2147 i = 16;
2148 }
2149 } else if (i == 64) {
2150 if (cpu < IF_X86_64) {
2151 nasm_error(ERR_NONFATAL,
2152 "cannot specify 64-bit segment on processor below an x86-64");
2153 i = 16;
2154 }
2155 if (i != maxbits) {
2156 nasm_error(ERR_NONFATAL,
2157 "%s output format does not support 64-bit code",
2158 ofmt->shortname);
2159 i = 16;
2160 }
2161 } else {
2162 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2163 "`%s' is not a valid segment size; must be 16, 32 or 64",
2164 value);
2165 i = 16;
2166 }
2167 return i;
2168 }
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