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output: outmac -- Fix few nits during merge
[nasm.git] / nasm.c
blob55c7a2a215907b525cb0239f06564650b0726437
1 /* ----------------------------------------------------------------------- *
2 *
3 * Copyright 1996-2016 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 #include "iflag.h"
64
65 /*
66 * This is the maximum number of optimization passes to do. If we ever
67 * find a case where the optimizer doesn't naturally converge, we might
68 * have to drop this value so the assembler doesn't appear to just hang.
69 */
70 #define MAX_OPTIMIZE (INT_MAX >> 1)
71
72 struct forwrefinfo { /* info held on forward refs. */
73 int lineno;
74 int operand;
75 };
76
77 static int get_bits(char *value);
78 static iflag_t get_cpu(char *cpu_str);
79 static void parse_cmdline(int, char **);
80 static void assemble_file(char *, StrList **);
81 static void nasm_verror_gnu(int severity, const char *fmt, va_list args);
82 static void nasm_verror_vc(int severity, const char *fmt, va_list args);
83 static void nasm_verror_common(int severity, const char *fmt, va_list args);
84 static bool is_suppressed_warning(int severity);
85 static void usage(void);
86
87 static int using_debug_info, opt_verbose_info;
88 bool tasm_compatible_mode = false;
89 int pass0, passn;
90 int globalrel = 0;
91 int globalbnd = 0;
92
93 static time_t official_compile_time;
94
95 static char inname[FILENAME_MAX];
96 static char outname[FILENAME_MAX];
97 static char listname[FILENAME_MAX];
98 static char errname[FILENAME_MAX];
99 static int globallineno; /* for forward-reference tracking */
100 /* static int pass = 0; */
101 struct ofmt *ofmt = &OF_DEFAULT;
102 struct ofmt_alias *ofmt_alias = NULL;
103 const struct dfmt *dfmt;
104
105 static FILE *error_file; /* Where to write error messages */
106
107 FILE *ofile = NULL;
108 int optimizing = MAX_OPTIMIZE; /* number of optimization passes to take */
109 static int sb, cmd_sb = 16; /* by default */
110
111 static iflag_t cpu;
112 static iflag_t cmd_cpu;
113
114 int64_t global_offset_changed; /* referenced in labels.c */
115 int64_t prev_offset_changed;
116 int32_t stall_count;
117
118 static struct location location;
119 int in_abs_seg; /* Flag we are in ABSOLUTE seg */
120 int32_t abs_seg; /* ABSOLUTE segment basis */
121 int32_t abs_offset; /* ABSOLUTE offset */
122
123 static struct RAA *offsets;
124
125 static struct SAA *forwrefs; /* keep track of forward references */
126 static const struct forwrefinfo *forwref;
127
128 static struct preproc_ops *preproc;
129
130 #define OP_NORMAL (1u << 0)
131 #define OP_PREPROCESS (1u << 1)
132 #define OP_DEPEND (1u << 2)
133
134 static unsigned int operating_mode;
135
136 /* Dependency flags */
137 static bool depend_emit_phony = false;
138 static bool depend_missing_ok = false;
139 static const char *depend_target = NULL;
140 static const char *depend_file = NULL;
141
142 /*
143 * Which of the suppressible warnings are suppressed. Entry zero
144 * isn't an actual warning, but it used for -w+error/-Werror.
145 */
146
147 static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
148 static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
149
150 static const struct warning {
151 const char *name;
152 const char *help;
153 bool enabled;
154 } warnings[ERR_WARN_MAX+1] = {
155 {"error", "treat warnings as errors", false},
156 {"macro-params", "macro calls with wrong parameter count", true},
157 {"macro-selfref", "cyclic macro references", false},
158 {"macro-defaults", "macros with more default than optional parameters", true},
159 {"orphan-labels", "labels alone on lines without trailing `:'", true},
160 {"number-overflow", "numeric constant does not fit", true},
161 {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
162 {"float-overflow", "floating point overflow", true},
163 {"float-denorm", "floating point denormal", false},
164 {"float-underflow", "floating point underflow", false},
165 {"float-toolong", "too many digits in floating-point number", true},
166 {"user", "%warning directives", true},
167 {"lock", "lock prefix on unlockable instructions", true},
168 {"hle", "invalid hle prefixes", true},
169 {"bnd", "invalid bnd prefixes", true},
170 {"zext-reloc", "relocation zero-extended to match output format", true},
171 };
172
173 static bool want_usage;
174 static bool terminate_after_phase;
175 int user_nolist = 0; /* fbk 9/2/00 */
176
177 static char *quote_for_make(const char *str);
178
179 static int64_t get_curr_offs(void)
180 {
181 return in_abs_seg ? abs_offset : raa_read(offsets, location.segment);
182 }
183
184 static void set_curr_offs(int64_t l_off)
185 {
186 if (in_abs_seg)
187 abs_offset = l_off;
188 else
189 offsets = raa_write(offsets, location.segment, l_off);
190 }
191
192 static void nasm_fputs(const char *line, FILE * outfile)
193 {
194 if (outfile) {
195 fputs(line, outfile);
196 putc('\n', outfile);
197 } else
198 puts(line);
199 }
200
201 /* Convert a struct tm to a POSIX-style time constant */
202 static int64_t make_posix_time(struct tm *tm)
203 {
204 int64_t t;
205 int64_t y = tm->tm_year;
206
207 /* See IEEE 1003.1:2004, section 4.14 */
208
209 t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
210 t += tm->tm_yday;
211 t *= 24;
212 t += tm->tm_hour;
213 t *= 60;
214 t += tm->tm_min;
215 t *= 60;
216 t += tm->tm_sec;
217
218 return t;
219 }
220
221 static void define_macros_early(void)
222 {
223 char temp[128];
224 struct tm lt, *lt_p, gm, *gm_p;
225 int64_t posix_time;
226
227 lt_p = localtime(&official_compile_time);
228 if (lt_p) {
229 lt = *lt_p;
230
231 strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", &lt);
232 preproc->pre_define(temp);
233 strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", &lt);
234 preproc->pre_define(temp);
235 strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", &lt);
236 preproc->pre_define(temp);
237 strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", &lt);
238 preproc->pre_define(temp);
239 }
240
241 gm_p = gmtime(&official_compile_time);
242 if (gm_p) {
243 gm = *gm_p;
244
245 strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
246 preproc->pre_define(temp);
247 strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
248 preproc->pre_define(temp);
249 strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
250 preproc->pre_define(temp);
251 strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
252 preproc->pre_define(temp);
253 }
254
255 if (gm_p)
256 posix_time = make_posix_time(&gm);
257 else if (lt_p)
258 posix_time = make_posix_time(&lt);
259 else
260 posix_time = 0;
261
262 if (posix_time) {
263 snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
264 preproc->pre_define(temp);
265 }
266 }
267
268 static void define_macros_late(void)
269 {
270 char temp[128];
271
272 /*
273 * In case if output format is defined by alias
274 * we have to put shortname of the alias itself here
275 * otherwise ABI backward compatibility gets broken.
276 */
277 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s",
278 ofmt_alias ? ofmt_alias->shortname : ofmt->shortname);
279 preproc->pre_define(temp);
280 }
281
282 static void emit_dependencies(StrList *list)
283 {
284 FILE *deps;
285 int linepos, len;
286 StrList *l, *nl;
287
288 if (depend_file && strcmp(depend_file, "-")) {
289 deps = fopen(depend_file, "w");
290 if (!deps) {
291 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
292 "unable to write dependency file `%s'", depend_file);
293 return;
294 }
295 } else {
296 deps = stdout;
297 }
298
299 linepos = fprintf(deps, "%s:", depend_target);
300 list_for_each(l, list) {
301 char *file = quote_for_make(l->str);
302 len = strlen(file);
303 if (linepos + len > 62 && linepos > 1) {
304 fprintf(deps, " \\\n ");
305 linepos = 1;
306 }
307 fprintf(deps, " %s", file);
308 linepos += len+1;
309 nasm_free(file);
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 iflag_set(&cpu, IF_PLEVEL);
330 iflag_set(&cmd_cpu, IF_PLEVEL);
331
332 pass0 = 0;
333 want_usage = terminate_after_phase = false;
334 nasm_set_verror(nasm_verror_gnu);
335
336 error_file = stderr;
337
338 tolower_init();
339
340 offsets = raa_init();
341 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
342
343 preproc = &nasmpp;
344 operating_mode = OP_NORMAL;
345
346 seg_init();
347
348 /* Define some macros dependent on the runtime, but not
349 on the command line. */
350 define_macros_early();
351
352 parse_cmdline(argc, argv);
353
354 if (terminate_after_phase) {
355 if (want_usage)
356 usage();
357 return 1;
358 }
359
360 /* If debugging info is disabled, suppress any debug calls */
361 if (!using_debug_info)
362 ofmt->current_dfmt = &null_debug_form;
363
364 if (ofmt->stdmac)
365 preproc->extra_stdmac(ofmt->stdmac);
366 parser_global_info(&location);
367 eval_global_info(ofmt, lookup_label, &location);
368
369 /* define some macros dependent of command-line */
370 define_macros_late();
371
372 depend_ptr = (depend_file || (operating_mode & OP_DEPEND)) ? &depend_list : NULL;
373 if (!depend_target)
374 depend_target = quote_for_make(outname);
375
376 if (operating_mode & OP_DEPEND) {
377 char *line;
378
379 if (depend_missing_ok)
380 preproc->include_path(NULL); /* "assume generated" */
381
382 preproc->reset(inname, 0, &nasmlist, depend_ptr);
383 if (outname[0] == '\0')
384 ofmt->filename(inname, outname);
385 ofile = NULL;
386 while ((line = preproc->getline()))
387 nasm_free(line);
388 preproc->cleanup(0);
389 } else if (operating_mode & OP_PREPROCESS) {
390 char *line;
391 char *file_name = NULL;
392 int32_t prior_linnum = 0;
393 int lineinc = 0;
394
395 if (*outname) {
396 ofile = fopen(outname, "w");
397 if (!ofile)
398 nasm_error(ERR_FATAL | ERR_NOFILE,
399 "unable to open output file `%s'",
400 outname);
401 } else
402 ofile = NULL;
403
404 location.known = false;
405
406 /* pass = 1; */
407 preproc->reset(inname, 3, &nasmlist, depend_ptr);
408 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
409
410 while ((line = preproc->getline())) {
411 /*
412 * We generate %line directives if needed for later programs
413 */
414 int32_t linnum = prior_linnum += lineinc;
415 int altline = src_get(&linnum, &file_name);
416 if (altline) {
417 if (altline == 1 && lineinc == 1)
418 nasm_fputs("", ofile);
419 else {
420 lineinc = (altline != -1 || lineinc != 1);
421 fprintf(ofile ? ofile : stdout,
422 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
423 file_name);
424 }
425 prior_linnum = linnum;
426 }
427 nasm_fputs(line, ofile);
428 nasm_free(line);
429 }
430 nasm_free(file_name);
431 preproc->cleanup(0);
432 if (ofile)
433 fclose(ofile);
434 if (ofile && terminate_after_phase)
435 remove(outname);
436 ofile = NULL;
437 }
438
439 if (operating_mode & OP_NORMAL) {
440 /*
441 * We must call ofmt->filename _anyway_, even if the user
442 * has specified their own output file, because some
443 * formats (eg OBJ and COFF) use ofmt->filename to find out
444 * the name of the input file and then put that inside the
445 * file.
446 */
447 ofmt->filename(inname, outname);
448
449 ofile = fopen(outname, (ofmt->flags & OFMT_TEXT) ? "w" : "wb");
450 if (!ofile)
451 nasm_error(ERR_FATAL | ERR_NOFILE,
452 "unable to open output file `%s'", outname);
453
454 /*
455 * We must call init_labels() before ofmt->init() since
456 * some object formats will want to define labels in their
457 * init routines. (eg OS/2 defines the FLAT group)
458 */
459 init_labels();
460
461 ofmt->init();
462 dfmt = ofmt->current_dfmt;
463 dfmt->init();
464
465 assemble_file(inname, depend_ptr);
466
467 if (!terminate_after_phase) {
468 ofmt->cleanup(using_debug_info);
469 cleanup_labels();
470 fflush(ofile);
471 if (ferror(ofile))
472 nasm_error(ERR_NONFATAL|ERR_NOFILE,
473 "write error on output file `%s'", outname);
474 }
475
476 if (ofile) {
477 fclose(ofile);
478 if (terminate_after_phase)
479 remove(outname);
480 ofile = NULL;
481 }
482 }
483
484 if (depend_list && !terminate_after_phase)
485 emit_dependencies(depend_list);
486
487 if (want_usage)
488 usage();
489
490 raa_free(offsets);
491 saa_free(forwrefs);
492 eval_cleanup();
493 stdscan_cleanup();
494
495 return terminate_after_phase;
496 }
497
498 /*
499 * Get a parameter for a command line option.
500 * First arg must be in the form of e.g. -f...
501 */
502 static char *get_param(char *p, char *q, bool *advance)
503 {
504 *advance = false;
505 if (p[2]) /* the parameter's in the option */
506 return nasm_skip_spaces(p + 2);
507 if (q && q[0]) {
508 *advance = true;
509 return q;
510 }
511 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
512 "option `-%c' requires an argument", p[1]);
513 return NULL;
514 }
515
516 /*
517 * Copy a filename
518 */
519 static void copy_filename(char *dst, const char *src)
520 {
521 size_t len = strlen(src);
522
523 if (len >= (size_t)FILENAME_MAX) {
524 nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
525 return;
526 }
527 strncpy(dst, src, FILENAME_MAX);
528 }
529
530 /*
531 * Convert a string to Make-safe form
532 */
533 static char *quote_for_make(const char *str)
534 {
535 const char *p;
536 char *os, *q;
537
538 size_t n = 1; /* Terminating zero */
539 size_t nbs = 0;
540
541 if (!str)
542 return NULL;
543
544 for (p = str; *p; p++) {
545 switch (*p) {
546 case ' ':
547 case '\t':
548 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
549 n += nbs + 2;
550 nbs = 0;
551 break;
552 case '$':
553 case '#':
554 nbs = 0;
555 n += 2;
556 break;
557 case '\\':
558 nbs++;
559 n++;
560 break;
561 default:
562 nbs = 0;
563 n++;
564 break;
565 }
566 }
567
568 /* Convert N backslashes at the end of filename to 2N backslashes */
569 if (nbs)
570 n += nbs;
571
572 os = q = nasm_malloc(n);
573
574 nbs = 0;
575 for (p = str; *p; p++) {
576 switch (*p) {
577 case ' ':
578 case '\t':
579 while (nbs--)
580 *q++ = '\\';
581 *q++ = '\\';
582 *q++ = *p;
583 break;
584 case '$':
585 *q++ = *p;
586 *q++ = *p;
587 nbs = 0;
588 break;
589 case '#':
590 *q++ = '\\';
591 *q++ = *p;
592 nbs = 0;
593 break;
594 case '\\':
595 *q++ = *p;
596 nbs++;
597 break;
598 default:
599 *q++ = *p;
600 nbs = 0;
601 break;
602 }
603 }
604 while (nbs--)
605 *q++ = '\\';
606
607 *q = '\0';
608
609 return os;
610 }
611
612 struct textargs {
613 const char *label;
614 int value;
615 };
616
617 enum text_options {
618 OPT_PREFIX,
619 OPT_POSTFIX,
620 };
621 struct textargs textopts[] = {
622 {"prefix", OPT_PREFIX},
623 {"postfix", OPT_POSTFIX},
624 {NULL, 0}
625 };
626
627 static void show_version(void)
628 {
629 printf("NASM version %s compiled on %s%s\n",
630 nasm_version, nasm_date, nasm_compile_options);
631 exit(0);
632 }
633
634 static bool stopoptions = false;
635 static bool process_arg(char *p, char *q)
636 {
637 char *param;
638 int i;
639 bool advance = false;
640 bool do_warn;
641
642 if (!p || !p[0])
643 return false;
644
645 if (p[0] == '-' && !stopoptions) {
646 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
647 /* These parameters take values */
648 if (!(param = get_param(p, q, &advance)))
649 return advance;
650 }
651
652 switch (p[1]) {
653 case 's':
654 error_file = stdout;
655 break;
656
657 case 'o': /* output file */
658 copy_filename(outname, param);
659 break;
660
661 case 'f': /* output format */
662 ofmt = ofmt_find(param, &ofmt_alias);
663 if (!ofmt) {
664 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
665 "unrecognised output format `%s' - "
666 "use -hf for a list", param);
667 }
668 break;
669
670 case 'O': /* Optimization level */
671 {
672 int opt;
673
674 if (!*param) {
675 /* Naked -O == -Ox */
676 optimizing = MAX_OPTIMIZE;
677 } else {
678 while (*param) {
679 switch (*param) {
680 case '0': case '1': case '2': case '3': case '4':
681 case '5': case '6': case '7': case '8': case '9':
682 opt = strtoul(param, &param, 10);
683
684 /* -O0 -> optimizing == -1, 0.98 behaviour */
685 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
686 if (opt < 2)
687 optimizing = opt - 1;
688 else
689 optimizing = opt;
690 break;
691
692 case 'v':
693 case '+':
694 param++;
695 opt_verbose_info = true;
696 break;
697
698 case 'x':
699 param++;
700 optimizing = MAX_OPTIMIZE;
701 break;
702
703 default:
704 nasm_error(ERR_FATAL,
705 "unknown optimization option -O%c\n",
706 *param);
707 break;
708 }
709 }
710 if (optimizing > MAX_OPTIMIZE)
711 optimizing = MAX_OPTIMIZE;
712 }
713 break;
714 }
715
716 case 'p': /* pre-include */
717 case 'P':
718 preproc->pre_include(param);
719 break;
720
721 case 'd': /* pre-define */
722 case 'D':
723 preproc->pre_define(param);
724 break;
725
726 case 'u': /* un-define */
727 case 'U':
728 preproc->pre_undefine(param);
729 break;
730
731 case 'i': /* include search path */
732 case 'I':
733 preproc->include_path(param);
734 break;
735
736 case 'l': /* listing file */
737 copy_filename(listname, param);
738 break;
739
740 case 'Z': /* error messages file */
741 copy_filename(errname, param);
742 break;
743
744 case 'F': /* specify debug format */
745 ofmt->current_dfmt = dfmt_find(ofmt, param);
746 if (!ofmt->current_dfmt) {
747 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
748 "unrecognized debug format `%s' for"
749 " output format `%s'",
750 param, ofmt->shortname);
751 }
752 using_debug_info = true;
753 break;
754
755 case 'X': /* specify error reporting format */
756 if (nasm_stricmp("vc", param) == 0)
757 nasm_set_verror(nasm_verror_vc);
758 else if (nasm_stricmp("gnu", param) == 0)
759 nasm_set_verror(nasm_verror_gnu);
760 else
761 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
762 "unrecognized error reporting format `%s'",
763 param);
764 break;
765
766 case 'g':
767 using_debug_info = true;
768 break;
769
770 case 'h':
771 printf
772 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
773 "[-l listfile]\n"
774 " [options...] [--] filename\n"
775 " or nasm -v (or --v) for version info\n\n"
776 " -t assemble in SciTech TASM compatible mode\n"
777 " -g generate debug information in selected format\n");
778 printf
779 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
780 " -a don't preprocess (assemble only)\n"
781 " -M generate Makefile dependencies on stdout\n"
782 " -MG d:o, missing files assumed generated\n"
783 " -MF <file> set Makefile dependency file\n"
784 " -MD <file> assemble and generate dependencies\n"
785 " -MT <file> dependency target name\n"
786 " -MQ <file> dependency target name (quoted)\n"
787 " -MP emit phony target\n\n"
788 " -Z<file> redirect error messages to file\n"
789 " -s redirect error messages to stdout\n\n"
790 " -F format select a debugging format\n\n"
791 " -o outfile write output to an outfile\n\n"
792 " -f format select an output format\n\n"
793 " -l listfile write listing to a listfile\n\n"
794 " -I<path> adds a pathname to the include file path\n");
795 printf
796 (" -O<digit> optimize branch offsets\n"
797 " -O0: No optimization\n"
798 " -O1: Minimal optimization\n"
799 " -Ox: Multipass optimization (default)\n\n"
800 " -P<file> pre-includes a file\n"
801 " -D<macro>[=<value>] pre-defines a macro\n"
802 " -U<macro> undefines a macro\n"
803 " -X<format> specifies error reporting format (gnu or vc)\n"
804 " -w+foo enables warning foo (equiv. -Wfoo)\n"
805 " -w-foo disable warning foo (equiv. -Wno-foo)\n\n"
806 " -h show invocation summary and exit\n\n"
807 "--prefix,--postfix\n"
808 " this options prepend or append the given argument to all\n"
809 " extern and global variables\n"
810 "--allow-64-bit\n"
811 " do not restrict 64-bit code to 64-bit capable output\n"
812 " formats (use with care, no complaining)\n\n"
813 "Warnings:\n");
814 for (i = 0; i <= ERR_WARN_MAX; i++)
815 printf(" %-23s %s (default %s)\n",
816 warnings[i].name, warnings[i].help,
817 warnings[i].enabled ? "on" : "off");
818 printf
819 ("\nresponse files should contain command line parameters"
820 ", one per line.\n");
821 if (p[2] == 'f') {
822 printf("\nvalid output formats for -f are"
823 " (`*' denotes default):\n");
824 ofmt_list(ofmt, stdout);
825 } else {
826 printf("\nFor a list of valid output formats, use -hf.\n");
827 printf("For a list of debug formats, use -f <form> -y.\n");
828 }
829 exit(0); /* never need usage message here */
830 break;
831
832 case 'y':
833 printf("\nvalid debug formats for '%s' output format are"
834 " ('*' denotes default):\n", ofmt->shortname);
835 dfmt_list(ofmt, stdout);
836 exit(0);
837 break;
838
839 case 't':
840 tasm_compatible_mode = true;
841 break;
842
843 case 'v':
844 show_version();
845 break;
846
847 case 'e': /* preprocess only */
848 case 'E':
849 operating_mode = OP_PREPROCESS;
850 break;
851
852 case 'a': /* assemble only - don't preprocess */
853 preproc = &preproc_nop;
854 break;
855
856 case 'W':
857 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
858 do_warn = false;
859 param += 3;
860 } else {
861 do_warn = true;
862 }
863 goto set_warning;
864
865 case 'w':
866 if (param[0] != '+' && param[0] != '-') {
867 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
868 "invalid option to `-w'");
869 break;
870 }
871 do_warn = (param[0] == '+');
872 param++;
873
874 set_warning:
875 for (i = 0; i <= ERR_WARN_MAX; i++) {
876 if (!nasm_stricmp(param, warnings[i].name))
877 break;
878 }
879 if (i <= ERR_WARN_MAX) {
880 warning_on_global[i] = do_warn;
881 } else if (!nasm_stricmp(param, "all")) {
882 for (i = 1; i <= ERR_WARN_MAX; i++)
883 warning_on_global[i] = do_warn;
884 } else if (!nasm_stricmp(param, "none")) {
885 for (i = 1; i <= ERR_WARN_MAX; i++)
886 warning_on_global[i] = !do_warn;
887 } else {
888 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
889 "invalid warning `%s'", param);
890 }
891 break;
892
893 case 'M':
894 switch (p[2]) {
895 case 0:
896 operating_mode = OP_DEPEND;
897 break;
898 case 'G':
899 operating_mode = OP_DEPEND;
900 depend_missing_ok = true;
901 break;
902 case 'P':
903 depend_emit_phony = true;
904 break;
905 case 'D':
906 operating_mode = OP_NORMAL;
907 depend_file = q;
908 advance = true;
909 break;
910 case 'F':
911 depend_file = q;
912 advance = true;
913 break;
914 case 'T':
915 depend_target = q;
916 advance = true;
917 break;
918 case 'Q':
919 depend_target = quote_for_make(q);
920 advance = true;
921 break;
922 default:
923 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
924 "unknown dependency option `-M%c'", p[2]);
925 break;
926 }
927 if (advance && (!q || !q[0])) {
928 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
929 "option `-M%c' requires a parameter", p[2]);
930 break;
931 }
932 break;
933
934 case '-':
935 {
936 int s;
937
938 if (p[2] == 0) { /* -- => stop processing options */
939 stopoptions = 1;
940 break;
941 }
942
943 if (!nasm_stricmp(p, "--v"))
944 show_version();
945
946 for (s = 0; textopts[s].label; s++) {
947 if (!nasm_stricmp(p + 2, textopts[s].label)) {
948 break;
949 }
950 }
951
952 switch (s) {
953
954 case OPT_PREFIX:
955 case OPT_POSTFIX:
956 {
957 if (!q) {
958 nasm_error(ERR_NONFATAL | ERR_NOFILE |
959 ERR_USAGE,
960 "option `--%s' requires an argument",
961 p + 2);
962 break;
963 } else {
964 advance = 1, param = q;
965 }
966
967 switch (s) {
968 case OPT_PREFIX:
969 strlcpy(lprefix, param, PREFIX_MAX);
970 break;
971 case OPT_POSTFIX:
972 strlcpy(lpostfix, param, POSTFIX_MAX);
973 break;
974 default:
975 nasm_error(ERR_PANIC | ERR_NOFILE,
976 "internal error");
977 break;
978 }
979 break;
980 }
981
982 default:
983 {
984 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
985 "unrecognised option `--%s'", p + 2);
986 break;
987 }
988 }
989 break;
990 }
991
992 default:
993 if (!ofmt->setinfo(GI_SWITCH, &p))
994 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
995 "unrecognised option `-%c'", p[1]);
996 break;
997 }
998 } else {
999 if (*inname) {
1000 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1001 "more than one input file specified");
1002 } else {
1003 copy_filename(inname, p);
1004 }
1005 }
1006
1007 return advance;
1008 }
1009
1010 #define ARG_BUF_DELTA 128
1011
1012 static void process_respfile(FILE * rfile)
1013 {
1014 char *buffer, *p, *q, *prevarg;
1015 int bufsize, prevargsize;
1016
1017 bufsize = prevargsize = ARG_BUF_DELTA;
1018 buffer = nasm_malloc(ARG_BUF_DELTA);
1019 prevarg = nasm_malloc(ARG_BUF_DELTA);
1020 prevarg[0] = '\0';
1021
1022 while (1) { /* Loop to handle all lines in file */
1023 p = buffer;
1024 while (1) { /* Loop to handle long lines */
1025 q = fgets(p, bufsize - (p - buffer), rfile);
1026 if (!q)
1027 break;
1028 p += strlen(p);
1029 if (p > buffer && p[-1] == '\n')
1030 break;
1031 if (p - buffer > bufsize - 10) {
1032 int offset;
1033 offset = p - buffer;
1034 bufsize += ARG_BUF_DELTA;
1035 buffer = nasm_realloc(buffer, bufsize);
1036 p = buffer + offset;
1037 }
1038 }
1039
1040 if (!q && p == buffer) {
1041 if (prevarg[0])
1042 process_arg(prevarg, NULL);
1043 nasm_free(buffer);
1044 nasm_free(prevarg);
1045 return;
1046 }
1047
1048 /*
1049 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1050 * them are present at the end of the line.
1051 */
1052 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
1053
1054 while (p > buffer && nasm_isspace(p[-1]))
1055 *--p = '\0';
1056
1057 p = nasm_skip_spaces(buffer);
1058
1059 if (process_arg(prevarg, p))
1060 *p = '\0';
1061
1062 if ((int) strlen(p) > prevargsize - 10) {
1063 prevargsize += ARG_BUF_DELTA;
1064 prevarg = nasm_realloc(prevarg, prevargsize);
1065 }
1066 strncpy(prevarg, p, prevargsize);
1067 }
1068 }
1069
1070 /* Function to process args from a string of args, rather than the
1071 * argv array. Used by the environment variable and response file
1072 * processing.
1073 */
1074 static void process_args(char *args)
1075 {
1076 char *p, *q, *arg, *prevarg;
1077 char separator = ' ';
1078
1079 p = args;
1080 if (*p && *p != '-')
1081 separator = *p++;
1082 arg = NULL;
1083 while (*p) {
1084 q = p;
1085 while (*p && *p != separator)
1086 p++;
1087 while (*p == separator)
1088 *p++ = '\0';
1089 prevarg = arg;
1090 arg = q;
1091 if (process_arg(prevarg, arg))
1092 arg = NULL;
1093 }
1094 if (arg)
1095 process_arg(arg, NULL);
1096 }
1097
1098 static void process_response_file(const char *file)
1099 {
1100 char str[2048];
1101 FILE *f = fopen(file, "r");
1102 if (!f) {
1103 perror(file);
1104 exit(-1);
1105 }
1106 while (fgets(str, sizeof str, f)) {
1107 process_args(str);
1108 }
1109 fclose(f);
1110 }
1111
1112 static void parse_cmdline(int argc, char **argv)
1113 {
1114 FILE *rfile;
1115 char *envreal, *envcopy = NULL, *p;
1116 int i;
1117
1118 *inname = *outname = *listname = *errname = '\0';
1119
1120 for (i = 0; i <= ERR_WARN_MAX; i++)
1121 warning_on_global[i] = warnings[i].enabled;
1122
1123 /*
1124 * First, process the NASMENV environment variable.
1125 */
1126 envreal = getenv("NASMENV");
1127 if (envreal) {
1128 envcopy = nasm_strdup(envreal);
1129 process_args(envcopy);
1130 nasm_free(envcopy);
1131 }
1132
1133 /*
1134 * Now process the actual command line.
1135 */
1136 while (--argc) {
1137 bool advance;
1138 argv++;
1139 if (argv[0][0] == '@') {
1140 /*
1141 * We have a response file, so process this as a set of
1142 * arguments like the environment variable. This allows us
1143 * to have multiple arguments on a single line, which is
1144 * different to the -@resp file processing below for regular
1145 * NASM.
1146 */
1147 process_response_file(argv[0]+1);
1148 argc--;
1149 argv++;
1150 }
1151 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1152 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1153 if (p) {
1154 rfile = fopen(p, "r");
1155 if (rfile) {
1156 process_respfile(rfile);
1157 fclose(rfile);
1158 } else
1159 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1160 "unable to open response file `%s'", p);
1161 }
1162 } else
1163 advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1164 argv += advance, argc -= advance;
1165 }
1166
1167 /*
1168 * Look for basic command line typos. This definitely doesn't
1169 * catch all errors, but it might help cases of fumbled fingers.
1170 */
1171 if (!*inname)
1172 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1173 "no input file specified");
1174 else if (!strcmp(inname, errname) ||
1175 !strcmp(inname, outname) ||
1176 !strcmp(inname, listname) ||
1177 (depend_file && !strcmp(inname, depend_file)))
1178 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1179 "file `%s' is both input and output file",
1180 inname);
1181
1182 if (*errname) {
1183 error_file = fopen(errname, "w");
1184 if (!error_file) {
1185 error_file = stderr; /* Revert to default! */
1186 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1187 "cannot open file `%s' for error messages",
1188 errname);
1189 }
1190 }
1191 }
1192
1193 static enum directives getkw(char **directive, char **value);
1194
1195 static void assemble_file(char *fname, StrList **depend_ptr)
1196 {
1197 char *directive, *value, *p, *q, *special, *line;
1198 insn output_ins;
1199 int i, validid;
1200 bool rn_error;
1201 int32_t seg;
1202 int64_t offs;
1203 struct tokenval tokval;
1204 expr *e;
1205 int pass_max;
1206
1207 if (cmd_sb == 32 && iflag_ffs(&cmd_cpu) < IF_386)
1208 nasm_error(ERR_FATAL, "command line: "
1209 "32-bit segment size requires a higher cpu");
1210
1211 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1212 for (passn = 1; pass0 <= 2; passn++) {
1213 int pass1, pass2;
1214 ldfunc def_label;
1215
1216 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1217 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1218 /* pass0 0, 0, 0, ..., 1, 2 */
1219
1220 def_label = passn > 1 ? redefine_label : define_label;
1221
1222 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1223 cpu = cmd_cpu;
1224 if (pass0 == 2) {
1225 if (*listname)
1226 nasmlist.init(listname, nasm_error);
1227 }
1228 in_abs_seg = false;
1229 global_offset_changed = 0; /* set by redefine_label */
1230 location.segment = ofmt->section(NULL, pass2, &sb);
1231 globalbits = sb;
1232 if (passn > 1) {
1233 saa_rewind(forwrefs);
1234 forwref = saa_rstruct(forwrefs);
1235 raa_free(offsets);
1236 offsets = raa_init();
1237 }
1238 preproc->reset(fname, pass1, &nasmlist,
1239 pass1 == 2 ? depend_ptr : NULL);
1240 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1241
1242 globallineno = 0;
1243 if (passn == 1)
1244 location.known = true;
1245 location.offset = offs = get_curr_offs();
1246
1247 while ((line = preproc->getline())) {
1248 enum directives d;
1249 globallineno++;
1250
1251 /*
1252 * Here we parse our directives; this is not handled by the
1253 * 'real' parser. This really should be a separate function.
1254 */
1255 directive = line;
1256 d = getkw(&directive, &value);
1257 if (d) {
1258 int err = 0;
1259
1260 switch (d) {
1261 case D_SEGMENT: /* [SEGMENT n] */
1262 case D_SECTION:
1263 seg = ofmt->section(value, pass2, &sb);
1264 if (seg == NO_SEG) {
1265 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1266 "segment name `%s' not recognized",
1267 value);
1268 } else {
1269 in_abs_seg = false;
1270 location.segment = seg;
1271 }
1272 break;
1273 case D_SECTALIGN: /* [SECTALIGN n] */
1274 if (*value) {
1275 stdscan_reset();
1276 stdscan_set(value);
1277 tokval.t_type = TOKEN_INVALID;
1278 e = evaluate(stdscan, NULL, &tokval, NULL, pass2, nasm_error, NULL);
1279 if (e) {
1280 unsigned int align = (unsigned int)e->value;
1281 if ((uint64_t)e->value > 0x7fffffff) {
1282 /*
1283 * FIXME: Please make some sane message here
1284 * ofmt should have some 'check' method which
1285 * would report segment alignment bounds.
1286 */
1287 nasm_error(ERR_FATAL,
1288 "incorrect segment alignment `%s'", value);
1289 } else if (!is_power2(align)) {
1290 nasm_error(ERR_NONFATAL,
1291 "segment alignment `%s' is not power of two",
1292 value);
1293 }
1294 /* callee should be able to handle all details */
1295 ofmt->sectalign(location.segment, align);
1296 }
1297 }
1298 break;
1299 case D_EXTERN: /* [EXTERN label:special] */
1300 if (*value == '$')
1301 value++; /* skip initial $ if present */
1302 if (pass0 == 2) {
1303 q = value;
1304 while (*q && *q != ':')
1305 q++;
1306 if (*q == ':') {
1307 *q++ = '\0';
1308 ofmt->symdef(value, 0L, 0L, 3, q);
1309 }
1310 } else if (passn == 1) {
1311 q = value;
1312 validid = true;
1313 if (!isidstart(*q))
1314 validid = false;
1315 while (*q && *q != ':') {
1316 if (!isidchar(*q))
1317 validid = false;
1318 q++;
1319 }
1320 if (!validid) {
1321 nasm_error(ERR_NONFATAL,
1322 "identifier expected after EXTERN");
1323 break;
1324 }
1325 if (*q == ':') {
1326 *q++ = '\0';
1327 special = q;
1328 } else
1329 special = NULL;
1330 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1331 int temp = pass0;
1332 pass0 = 1; /* fake pass 1 in labels.c */
1333 declare_as_global(value, special);
1334 define_label(value, seg_alloc(), 0L, NULL,
1335 false, true);
1336 pass0 = temp;
1337 }
1338 } /* else pass0 == 1 */
1339 break;
1340 case D_BITS: /* [BITS bits] */
1341 globalbits = sb = get_bits(value);
1342 break;
1343 case D_GLOBAL: /* [GLOBAL symbol:special] */
1344 if (*value == '$')
1345 value++; /* skip initial $ if present */
1346 if (pass0 == 2) { /* pass 2 */
1347 q = value;
1348 while (*q && *q != ':')
1349 q++;
1350 if (*q == ':') {
1351 *q++ = '\0';
1352 ofmt->symdef(value, 0L, 0L, 3, q);
1353 }
1354 } else if (pass2 == 1) { /* pass == 1 */
1355 q = value;
1356 validid = true;
1357 if (!isidstart(*q))
1358 validid = false;
1359 while (*q && *q != ':') {
1360 if (!isidchar(*q))
1361 validid = false;
1362 q++;
1363 }
1364 if (!validid) {
1365 nasm_error(ERR_NONFATAL,
1366 "identifier expected after GLOBAL");
1367 break;
1368 }
1369 if (*q == ':') {
1370 *q++ = '\0';
1371 special = q;
1372 } else
1373 special = NULL;
1374 declare_as_global(value, special);
1375 } /* pass == 1 */
1376 break;
1377 case D_COMMON: /* [COMMON symbol size:special] */
1378 {
1379 int64_t size;
1380
1381 if (*value == '$')
1382 value++; /* skip initial $ if present */
1383 p = value;
1384 validid = true;
1385 if (!isidstart(*p))
1386 validid = false;
1387 while (*p && !nasm_isspace(*p)) {
1388 if (!isidchar(*p))
1389 validid = false;
1390 p++;
1391 }
1392 if (!validid) {
1393 nasm_error(ERR_NONFATAL,
1394 "identifier expected after COMMON");
1395 break;
1396 }
1397 if (*p) {
1398 p = nasm_zap_spaces_fwd(p);
1399 q = p;
1400 while (*q && *q != ':')
1401 q++;
1402 if (*q == ':') {
1403 *q++ = '\0';
1404 special = q;
1405 } else {
1406 special = NULL;
1407 }
1408 size = readnum(p, &rn_error);
1409 if (rn_error) {
1410 nasm_error(ERR_NONFATAL,
1411 "invalid size specified"
1412 " in COMMON declaration");
1413 break;
1414 }
1415 } else {
1416 nasm_error(ERR_NONFATAL,
1417 "no size specified in"
1418 " COMMON declaration");
1419 break;
1420 }
1421
1422 if (pass0 < 2) {
1423 define_common(value, seg_alloc(), size, special);
1424 } else if (pass0 == 2) {
1425 if (special)
1426 ofmt->symdef(value, 0L, 0L, 3, special);
1427 }
1428 break;
1429 }
1430 case D_ABSOLUTE: /* [ABSOLUTE address] */
1431 stdscan_reset();
1432 stdscan_set(value);
1433 tokval.t_type = TOKEN_INVALID;
1434 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1435 nasm_error, NULL);
1436 if (e) {
1437 if (!is_reloc(e))
1438 nasm_error(pass0 ==
1439 1 ? ERR_NONFATAL : ERR_PANIC,
1440 "cannot use non-relocatable expression as "
1441 "ABSOLUTE address");
1442 else {
1443 abs_seg = reloc_seg(e);
1444 abs_offset = reloc_value(e);
1445 }
1446 } else if (passn == 1)
1447 abs_offset = 0x100; /* don't go near zero in case of / */
1448 else
1449 nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
1450 "in pass two");
1451 in_abs_seg = true;
1452 location.segment = NO_SEG;
1453 break;
1454 case D_DEBUG: /* [DEBUG] */
1455 {
1456 char debugid[128];
1457 bool badid, overlong;
1458
1459 p = value;
1460 q = debugid;
1461 badid = overlong = false;
1462 if (!isidstart(*p)) {
1463 badid = true;
1464 } else {
1465 while (*p && !nasm_isspace(*p)) {
1466 if (q >= debugid + sizeof debugid - 1) {
1467 overlong = true;
1468 break;
1469 }
1470 if (!isidchar(*p))
1471 badid = true;
1472 *q++ = *p++;
1473 }
1474 *q = 0;
1475 }
1476 if (badid) {
1477 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1478 "identifier expected after DEBUG");
1479 break;
1480 }
1481 if (overlong) {
1482 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1483 "DEBUG identifier too long");
1484 break;
1485 }
1486 p = nasm_skip_spaces(p);
1487 if (pass0 == 2)
1488 dfmt->debug_directive(debugid, p);
1489 break;
1490 }
1491 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1492 value = nasm_skip_spaces(value);
1493 switch(*value) {
1494 case '-': validid = 0; value++; break;
1495 case '+': validid = 1; value++; break;
1496 case '*': validid = 2; value++; break;
1497 default: validid = 1; break;
1498 }
1499
1500 for (i = 1; i <= ERR_WARN_MAX; i++)
1501 if (!nasm_stricmp(value, warnings[i].name))
1502 break;
1503 if (i <= ERR_WARN_MAX) {
1504 switch(validid) {
1505 case 0:
1506 warning_on[i] = false;
1507 break;
1508 case 1:
1509 warning_on[i] = true;
1510 break;
1511 case 2:
1512 warning_on[i] = warning_on_global[i];
1513 break;
1514 }
1515 } else
1516 nasm_error(ERR_NONFATAL,
1517 "invalid warning id in WARNING directive");
1518 break;
1519 case D_CPU: /* [CPU] */
1520 cpu = get_cpu(value);
1521 break;
1522 case D_LIST: /* [LIST {+|-}] */
1523 value = nasm_skip_spaces(value);
1524 if (*value == '+') {
1525 user_nolist = 0;
1526 } else {
1527 if (*value == '-') {
1528 user_nolist = 1;
1529 } else {
1530 err = 1;
1531 }
1532 }
1533 break;
1534 case D_DEFAULT: /* [DEFAULT] */
1535 stdscan_reset();
1536 stdscan_set(value);
1537 tokval.t_type = TOKEN_INVALID;
1538 if (stdscan(NULL, &tokval) != TOKEN_INVALID) {
1539 switch ((int)tokval.t_integer) {
1540 case S_REL:
1541 globalrel = 1;
1542 break;
1543 case S_ABS:
1544 globalrel = 0;
1545 break;
1546 case P_BND:
1547 globalbnd = 1;
1548 break;
1549 case P_NOBND:
1550 globalbnd = 0;
1551 break;
1552 default:
1553 err = 1;
1554 break;
1555 }
1556 } else {
1557 err = 1;
1558 }
1559 break;
1560 case D_FLOAT:
1561 if (float_option(value)) {
1562 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1563 "unknown 'float' directive: %s",
1564 value);
1565 }
1566 break;
1567 default:
1568 if (ofmt->directive(d, value, pass2))
1569 break;
1570 /* else fall through */
1571 case D_unknown:
1572 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1573 "unrecognised directive [%s]",
1574 directive);
1575 break;
1576 }
1577 if (err) {
1578 nasm_error(ERR_NONFATAL,
1579 "invalid parameter to [%s] directive",
1580 directive);
1581 }
1582 } else { /* it isn't a directive */
1583 parse_line(pass1, line, &output_ins, def_label);
1584
1585 if (optimizing > 0) {
1586 if (forwref != NULL && globallineno == forwref->lineno) {
1587 output_ins.forw_ref = true;
1588 do {
1589 output_ins.oprs[forwref->operand].opflags |= OPFLAG_FORWARD;
1590 forwref = saa_rstruct(forwrefs);
1591 } while (forwref != NULL
1592 && forwref->lineno == globallineno);
1593 } else
1594 output_ins.forw_ref = false;
1595
1596 if (output_ins.forw_ref) {
1597 if (passn == 1) {
1598 for (i = 0; i < output_ins.operands; i++) {
1599 if (output_ins.oprs[i].opflags & OPFLAG_FORWARD) {
1600 struct forwrefinfo *fwinf = (struct forwrefinfo *)saa_wstruct(forwrefs);
1601 fwinf->lineno = globallineno;
1602 fwinf->operand = i;
1603 }
1604 }
1605 }
1606 }
1607 }
1608
1609 /* forw_ref */
1610 if (output_ins.opcode == I_EQU) {
1611 if (pass1 == 1) {
1612 /*
1613 * Special `..' EQUs get processed in pass two,
1614 * except `..@' macro-processor EQUs which are done
1615 * in the normal place.
1616 */
1617 if (!output_ins.label)
1618 nasm_error(ERR_NONFATAL,
1619 "EQU not preceded by label");
1620
1621 else if (output_ins.label[0] != '.' ||
1622 output_ins.label[1] != '.' ||
1623 output_ins.label[2] == '@') {
1624 if (output_ins.operands == 1 &&
1625 (output_ins.oprs[0].type & IMMEDIATE) &&
1626 output_ins.oprs[0].wrt == NO_SEG) {
1627 bool isext = !!(output_ins.oprs[0].opflags & OPFLAG_EXTERN);
1628 def_label(output_ins.label,
1629 output_ins.oprs[0].segment,
1630 output_ins.oprs[0].offset, NULL,
1631 false, isext);
1632 } else if (output_ins.operands == 2
1633 && (output_ins.oprs[0].type & IMMEDIATE)
1634 && (output_ins.oprs[0].type & COLON)
1635 && output_ins.oprs[0].segment == NO_SEG
1636 && output_ins.oprs[0].wrt == NO_SEG
1637 && (output_ins.oprs[1].type & IMMEDIATE)
1638 && output_ins.oprs[1].segment == NO_SEG
1639 && output_ins.oprs[1].wrt == NO_SEG) {
1640 def_label(output_ins.label,
1641 output_ins.oprs[0].offset | SEG_ABS,
1642 output_ins.oprs[1].offset,
1643 NULL, false, false);
1644 } else
1645 nasm_error(ERR_NONFATAL,
1646 "bad syntax for EQU");
1647 }
1648 } else {
1649 /*
1650 * Special `..' EQUs get processed here, except
1651 * `..@' macro processor EQUs which are done above.
1652 */
1653 if (output_ins.label[0] == '.' &&
1654 output_ins.label[1] == '.' &&
1655 output_ins.label[2] != '@') {
1656 if (output_ins.operands == 1 &&
1657 (output_ins.oprs[0].type & IMMEDIATE)) {
1658 define_label(output_ins.label,
1659 output_ins.oprs[0].segment,
1660 output_ins.oprs[0].offset,
1661 NULL, false, false);
1662 } else if (output_ins.operands == 2
1663 && (output_ins.oprs[0].type & IMMEDIATE)
1664 && (output_ins.oprs[0].type & COLON)
1665 && output_ins.oprs[0].segment == NO_SEG
1666 && (output_ins.oprs[1].type & IMMEDIATE)
1667 && output_ins.oprs[1].segment == NO_SEG) {
1668 define_label(output_ins.label,
1669 output_ins.oprs[0].offset | SEG_ABS,
1670 output_ins.oprs[1].offset,
1671 NULL, false, false);
1672 } else
1673 nasm_error(ERR_NONFATAL,
1674 "bad syntax for EQU");
1675 }
1676 }
1677 } else { /* instruction isn't an EQU */
1678
1679 if (pass1 == 1) {
1680
1681 int64_t l = insn_size(location.segment, offs, sb, cpu,
1682 &output_ins, nasm_error);
1683
1684 /* if (using_debug_info) && output_ins.opcode != -1) */
1685 if (using_debug_info)
1686 { /* fbk 03/25/01 */
1687 /* this is done here so we can do debug type info */
1688 int32_t typeinfo =
1689 TYS_ELEMENTS(output_ins.operands);
1690 switch (output_ins.opcode) {
1691 case I_RESB:
1692 typeinfo =
1693 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_BYTE;
1694 break;
1695 case I_RESW:
1696 typeinfo =
1697 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_WORD;
1698 break;
1699 case I_RESD:
1700 typeinfo =
1701 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_DWORD;
1702 break;
1703 case I_RESQ:
1704 typeinfo =
1705 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_QWORD;
1706 break;
1707 case I_REST:
1708 typeinfo =
1709 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_TBYTE;
1710 break;
1711 case I_RESO:
1712 typeinfo =
1713 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_OWORD;
1714 break;
1715 case I_RESY:
1716 typeinfo =
1717 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_YWORD;
1718 break;
1719 case I_DB:
1720 typeinfo |= TY_BYTE;
1721 break;
1722 case I_DW:
1723 typeinfo |= TY_WORD;
1724 break;
1725 case I_DD:
1726 if (output_ins.eops_float)
1727 typeinfo |= TY_FLOAT;
1728 else
1729 typeinfo |= TY_DWORD;
1730 break;
1731 case I_DQ:
1732 typeinfo |= TY_QWORD;
1733 break;
1734 case I_DT:
1735 typeinfo |= TY_TBYTE;
1736 break;
1737 case I_DO:
1738 typeinfo |= TY_OWORD;
1739 break;
1740 case I_DY:
1741 typeinfo |= TY_YWORD;
1742 break;
1743 default:
1744 typeinfo = TY_LABEL;
1745
1746 }
1747
1748 dfmt->debug_typevalue(typeinfo);
1749 }
1750 if (l != -1) {
1751 offs += l;
1752 set_curr_offs(offs);
1753 }
1754 /*
1755 * else l == -1 => invalid instruction, which will be
1756 * flagged as an error on pass 2
1757 */
1758
1759 } else {
1760 offs += assemble(location.segment, offs, sb, cpu,
1761 &output_ins, ofmt, nasm_error,
1762 &nasmlist);
1763 set_curr_offs(offs);
1764
1765 }
1766 } /* not an EQU */
1767 cleanup_insn(&output_ins);
1768 }
1769 nasm_free(line);
1770 location.offset = offs = get_curr_offs();
1771 } /* end while (line = preproc->getline... */
1772
1773 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1774 nasm_error(ERR_NONFATAL,
1775 "phase error detected at end of assembly.");
1776
1777 if (pass1 == 1)
1778 preproc->cleanup(1);
1779
1780 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1781 pass0++;
1782 } else if (global_offset_changed &&
1783 global_offset_changed < prev_offset_changed) {
1784 prev_offset_changed = global_offset_changed;
1785 stall_count = 0;
1786 } else {
1787 stall_count++;
1788 }
1789
1790 if (terminate_after_phase)
1791 break;
1792
1793 if ((stall_count > 997) || (passn >= pass_max)) {
1794 /* We get here if the labels don't converge
1795 * Example: FOO equ FOO + 1
1796 */
1797 nasm_error(ERR_NONFATAL,
1798 "Can't find valid values for all labels "
1799 "after %d passes, giving up.", passn);
1800 nasm_error(ERR_NONFATAL,
1801 "Possible causes: recursive EQUs, macro abuse.");
1802 break;
1803 }
1804 }
1805
1806 preproc->cleanup(0);
1807 nasmlist.cleanup();
1808 if (!terminate_after_phase && opt_verbose_info) {
1809 /* -On and -Ov switches */
1810 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1811 }
1812 }
1813
1814 static enum directives getkw(char **directive, char **value)
1815 {
1816 char *p, *q, *buf;
1817
1818 buf = nasm_skip_spaces(*directive);
1819
1820 /* it should be enclosed in [ ] */
1821 if (*buf != '[')
1822 return D_none;
1823 q = strchr(buf, ']');
1824 if (!q)
1825 return D_none;
1826
1827 /* stip off the comments */
1828 p = strchr(buf, ';');
1829 if (p) {
1830 if (p < q) /* ouch! somwhere inside */
1831 return D_none;
1832 *p = '\0';
1833 }
1834
1835 /* no brace, no trailing spaces */
1836 *q = '\0';
1837 nasm_zap_spaces_rev(--q);
1838
1839 /* directive */
1840 p = nasm_skip_spaces(++buf);
1841 q = nasm_skip_word(p);
1842 if (!q)
1843 return D_none; /* sigh... no value there */
1844 *q = '\0';
1845 *directive = p;
1846
1847 /* and value finally */
1848 p = nasm_skip_spaces(++q);
1849 *value = p;
1850
1851 return find_directive(*directive);
1852 }
1853
1854 /**
1855 * gnu style error reporting
1856 * This function prints an error message to error_file in the
1857 * style used by GNU. An example would be:
1858 * file.asm:50: error: blah blah blah
1859 * where file.asm is the name of the file, 50 is the line number on
1860 * which the error occurs (or is detected) and "error:" is one of
1861 * the possible optional diagnostics -- it can be "error" or "warning"
1862 * or something else. Finally the line terminates with the actual
1863 * error message.
1864 *
1865 * @param severity the severity of the warning or error
1866 * @param fmt the printf style format string
1867 */
1868 static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
1869 {
1870 char *currentfile = NULL;
1871 int32_t lineno = 0;
1872
1873 if (is_suppressed_warning(severity))
1874 return;
1875
1876 if (!(severity & ERR_NOFILE))
1877 src_get(&lineno, &currentfile);
1878
1879 if (currentfile) {
1880 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1881 nasm_free(currentfile);
1882 } else {
1883 fputs("nasm: ", error_file);
1884 }
1885
1886 nasm_verror_common(severity, fmt, ap);
1887 }
1888
1889 /**
1890 * MS style error reporting
1891 * This function prints an error message to error_file in the
1892 * style used by Visual C and some other Microsoft tools. An example
1893 * would be:
1894 * file.asm(50) : error: blah blah blah
1895 * where file.asm is the name of the file, 50 is the line number on
1896 * which the error occurs (or is detected) and "error:" is one of
1897 * the possible optional diagnostics -- it can be "error" or "warning"
1898 * or something else. Finally the line terminates with the actual
1899 * error message.
1900 *
1901 * @param severity the severity of the warning or error
1902 * @param fmt the printf style format string
1903 */
1904 static void nasm_verror_vc(int severity, const char *fmt, va_list ap)
1905 {
1906 char *currentfile = NULL;
1907 int32_t lineno = 0;
1908
1909 if (is_suppressed_warning(severity))
1910 return;
1911
1912 if (!(severity & ERR_NOFILE))
1913 src_get(&lineno, &currentfile);
1914
1915 if (currentfile) {
1916 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1917 nasm_free(currentfile);
1918 } else {
1919 fputs("nasm: ", error_file);
1920 }
1921
1922 nasm_verror_common(severity, fmt, ap);
1923 }
1924
1925 /**
1926 * check for supressed warning
1927 * checks for suppressed warning or pass one only warning and we're
1928 * not in pass 1
1929 *
1930 * @param severity the severity of the warning or error
1931 * @return true if we should abort error/warning printing
1932 */
1933 static bool is_suppressed_warning(int severity)
1934 {
1935 /* Not a warning at all */
1936 if ((severity & ERR_MASK) != ERR_WARNING)
1937 return false;
1938
1939 /* See if it's a pass-one only warning and we're not in pass one. */
1940 if (((severity & ERR_PASS1) && pass0 != 1) ||
1941 ((severity & ERR_PASS2) && pass0 != 2))
1942 return true;
1943
1944 /* Might be a warning but suppresed explicitly */
1945 if (severity & ERR_WARN_MASK)
1946 return !warning_on[WARN_IDX(severity)];
1947 else
1948 return false;
1949 }
1950
1951 /**
1952 * common error reporting
1953 * This is the common back end of the error reporting schemes currently
1954 * implemented. It prints the nature of the warning and then the
1955 * specific error message to error_file and may or may not return. It
1956 * doesn't return if the error severity is a "panic" or "debug" type.
1957 *
1958 * @param severity the severity of the warning or error
1959 * @param fmt the printf style format string
1960 */
1961 static void nasm_verror_common(int severity, const char *fmt, va_list args)
1962 {
1963 char msg[1024];
1964 const char *pfx;
1965
1966 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1967 case ERR_WARNING:
1968 pfx = "warning: ";
1969 break;
1970 case ERR_NONFATAL:
1971 pfx = "error: ";
1972 break;
1973 case ERR_FATAL:
1974 pfx = "fatal: ";
1975 break;
1976 case ERR_PANIC:
1977 pfx = "panic: ";
1978 break;
1979 case ERR_DEBUG:
1980 pfx = "debug: ";
1981 break;
1982 default:
1983 pfx = "";
1984 break;
1985 }
1986
1987 vsnprintf(msg, sizeof msg, fmt, args);
1988
1989 fprintf(error_file, "%s%s\n", pfx, msg);
1990
1991 if (*listname)
1992 nasmlist.error(severity, pfx, msg);
1993
1994 if (severity & ERR_USAGE)
1995 want_usage = true;
1996
1997 switch (severity & ERR_MASK) {
1998 case ERR_DEBUG:
1999 /* no further action, by definition */
2000 break;
2001 case ERR_WARNING:
2002 /* Treat warnings as errors */
2003 if (warning_on[WARN_IDX(ERR_WARN_TERM)])
2004 terminate_after_phase = true;
2005 break;
2006 case ERR_NONFATAL:
2007 terminate_after_phase = true;
2008 break;
2009 case ERR_FATAL:
2010 if (ofile) {
2011 fclose(ofile);
2012 remove(outname);
2013 ofile = NULL;
2014 }
2015 if (want_usage)
2016 usage();
2017 exit(1); /* instantly die */
2018 break; /* placate silly compilers */
2019 case ERR_PANIC:
2020 fflush(NULL);
2021 /* abort(); */ /* halt, catch fire, and dump core */
2022 exit(3);
2023 break;
2024 }
2025 }
2026
2027 static void usage(void)
2028 {
2029 fputs("type `nasm -h' for help\n", error_file);
2030 }
2031
2032 static iflag_t get_cpu(char *value)
2033 {
2034 iflag_t r;
2035
2036 iflag_clear_all(&r);
2037
2038 if (!strcmp(value, "8086"))
2039 iflag_set(&r, IF_8086);
2040 else if (!strcmp(value, "186"))
2041 iflag_set(&r, IF_186);
2042 else if (!strcmp(value, "286"))
2043 iflag_set(&r, IF_286);
2044 else if (!strcmp(value, "386"))
2045 iflag_set(&r, IF_386);
2046 else if (!strcmp(value, "486"))
2047 iflag_set(&r, IF_486);
2048 else if (!strcmp(value, "586") ||
2049 !nasm_stricmp(value, "pentium"))
2050 iflag_set(&r, IF_PENT);
2051 else if (!strcmp(value, "686") ||
2052 !nasm_stricmp(value, "ppro") ||
2053 !nasm_stricmp(value, "pentiumpro") ||
2054 !nasm_stricmp(value, "p2"))
2055 iflag_set(&r, IF_P6);
2056 else if (!nasm_stricmp(value, "p3") ||
2057 !nasm_stricmp(value, "katmai"))
2058 iflag_set(&r, IF_KATMAI);
2059 else if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2060 !nasm_stricmp(value, "willamette"))
2061 iflag_set(&r, IF_WILLAMETTE);
2062 else if (!nasm_stricmp(value, "prescott"))
2063 iflag_set(&r, IF_PRESCOTT);
2064 else if (!nasm_stricmp(value, "x64") ||
2065 !nasm_stricmp(value, "x86-64"))
2066 iflag_set(&r, IF_X86_64);
2067 else if (!nasm_stricmp(value, "ia64") ||
2068 !nasm_stricmp(value, "ia-64") ||
2069 !nasm_stricmp(value, "itanium")||
2070 !nasm_stricmp(value, "itanic") ||
2071 !nasm_stricmp(value, "merced"))
2072 iflag_set(&r, IF_IA64);
2073 else {
2074 iflag_set(&r, IF_PLEVEL);
2075 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2076 "unknown 'cpu' type");
2077 }
2078 return r;
2079 }
2080
2081 static int get_bits(char *value)
2082 {
2083 int i;
2084
2085 if ((i = atoi(value)) == 16)
2086 return i; /* set for a 16-bit segment */
2087 else if (i == 32) {
2088 if (iflag_ffs(&cpu) < IF_386) {
2089 nasm_error(ERR_NONFATAL,
2090 "cannot specify 32-bit segment on processor below a 386");
2091 i = 16;
2092 }
2093 } else if (i == 64) {
2094 if (iflag_ffs(&cpu) < IF_X86_64) {
2095 nasm_error(ERR_NONFATAL,
2096 "cannot specify 64-bit segment on processor below an x86-64");
2097 i = 16;
2098 }
2099 } else {
2100 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2101 "`%s' is not a valid segment size; must be 16, 32 or 64",
2102 value);
2103 i = 16;
2104 }
2105 return i;
2106 }
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