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Merge branch 'master' into elfmerge
[nasm.git] / nasm.c
blob01e0628ca845e7060c7317c4d7d69e497481092c
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 bool is_suppressed_warning(int severity);
82 static bool skip_this_pass(int severity);
83 static void nasm_verror_gnu(int severity, const char *fmt, va_list args);
84 static void nasm_verror_vc(int severity, const char *fmt, va_list args);
85 static void nasm_verror_common(int severity, const char *fmt, va_list args);
86 static void usage(void);
87
88 static int using_debug_info, opt_verbose_info;
89 bool tasm_compatible_mode = false;
90 int pass0, passn;
91 int globalrel = 0;
92 int globalbnd = 0;
93
94 static time_t official_compile_time;
95
96 static char inname[FILENAME_MAX];
97 static char outname[FILENAME_MAX];
98 static char listname[FILENAME_MAX];
99 static char errname[FILENAME_MAX];
100 static int globallineno; /* for forward-reference tracking */
101 /* static int pass = 0; */
102 const struct ofmt *ofmt = &OF_DEFAULT;
103 const struct ofmt_alias *ofmt_alias = NULL;
104 const struct dfmt *dfmt;
105
106 static FILE *error_file; /* Where to write error messages */
107
108 FILE *ofile = NULL;
109 int optimizing = MAX_OPTIMIZE; /* number of optimization passes to take */
110 static int sb, cmd_sb = 16; /* by default */
111
112 static iflag_t cpu;
113 static iflag_t cmd_cpu;
114
115 int64_t global_offset_changed; /* referenced in labels.c */
116 int64_t prev_offset_changed;
117 int32_t stall_count;
118
119 struct location location;
120 int in_abs_seg; /* Flag we are in ABSOLUTE seg */
121 int32_t abs_seg; /* ABSOLUTE segment basis */
122 int32_t abs_offset; /* ABSOLUTE offset */
123
124 static struct RAA *offsets;
125
126 static struct SAA *forwrefs; /* keep track of forward references */
127 static const struct forwrefinfo *forwref;
128
129 static struct preproc_ops *preproc;
130
131 #define OP_NORMAL (1u << 0)
132 #define OP_PREPROCESS (1u << 1)
133 #define OP_DEPEND (1u << 2)
134
135 static unsigned int operating_mode;
136
137 /* Dependency flags */
138 static bool depend_emit_phony = false;
139 static bool depend_missing_ok = false;
140 static const char *depend_target = NULL;
141 static const char *depend_file = NULL;
142
143 /*
144 * Which of the suppressible warnings are suppressed. Entry zero
145 * isn't an actual warning, but it used for -w+error/-Werror.
146 */
147
148 static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
149 static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
150
151 static const struct warning {
152 const char *name;
153 const char *help;
154 bool enabled;
155 } warnings[ERR_WARN_MAX+1] = {
156 {"error", "treat warnings as errors", false},
157 {"macro-params", "macro calls with wrong parameter count", true},
158 {"macro-selfref", "cyclic macro references", false},
159 {"macro-defaults", "macros with more default than optional parameters", true},
160 {"orphan-labels", "labels alone on lines without trailing `:'", true},
161 {"number-overflow", "numeric constant does not fit", true},
162 {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
163 {"float-overflow", "floating point overflow", true},
164 {"float-denorm", "floating point denormal", false},
165 {"float-underflow", "floating point underflow", false},
166 {"float-toolong", "too many digits in floating-point number", true},
167 {"user", "%warning directives", true},
168 {"lock", "lock prefix on unlockable instructions", true},
169 {"hle", "invalid hle prefixes", true},
170 {"bnd", "invalid bnd prefixes", true},
171 {"zext-reloc", "relocation zero-extended to match output format", true},
172 };
173
174 static bool want_usage;
175 static bool terminate_after_phase;
176 bool user_nolist = false;
177
178 static char *quote_for_make(const char *str);
179
180 static int64_t get_curr_offs(void)
181 {
182 return in_abs_seg ? abs_offset : raa_read(offsets, location.segment);
183 }
184
185 static void set_curr_offs(int64_t l_off)
186 {
187 if (in_abs_seg)
188 abs_offset = l_off;
189 else
190 offsets = raa_write(offsets, location.segment, l_off);
191 }
192
193 static void nasm_fputs(const char *line, FILE * outfile)
194 {
195 if (outfile) {
196 fputs(line, outfile);
197 putc('\n', outfile);
198 } else
199 puts(line);
200 }
201
202 /* Convert a struct tm to a POSIX-style time constant */
203 static int64_t make_posix_time(struct tm *tm)
204 {
205 int64_t t;
206 int64_t y = tm->tm_year;
207
208 /* See IEEE 1003.1:2004, section 4.14 */
209
210 t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
211 t += tm->tm_yday;
212 t *= 24;
213 t += tm->tm_hour;
214 t *= 60;
215 t += tm->tm_min;
216 t *= 60;
217 t += tm->tm_sec;
218
219 return t;
220 }
221
222 static void define_macros_early(void)
223 {
224 char temp[128];
225 struct tm lt, *lt_p, gm, *gm_p;
226 int64_t posix_time;
227
228 lt_p = localtime(&official_compile_time);
229 if (lt_p) {
230 lt = *lt_p;
231
232 strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", &lt);
233 preproc->pre_define(temp);
234 strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", &lt);
235 preproc->pre_define(temp);
236 strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", &lt);
237 preproc->pre_define(temp);
238 strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", &lt);
239 preproc->pre_define(temp);
240 }
241
242 gm_p = gmtime(&official_compile_time);
243 if (gm_p) {
244 gm = *gm_p;
245
246 strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
247 preproc->pre_define(temp);
248 strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
249 preproc->pre_define(temp);
250 strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
251 preproc->pre_define(temp);
252 strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
253 preproc->pre_define(temp);
254 }
255
256 if (gm_p)
257 posix_time = make_posix_time(&gm);
258 else if (lt_p)
259 posix_time = make_posix_time(&lt);
260 else
261 posix_time = 0;
262
263 if (posix_time) {
264 snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
265 preproc->pre_define(temp);
266 }
267 }
268
269 static void define_macros_late(void)
270 {
271 char temp[128];
272
273 /*
274 * In case if output format is defined by alias
275 * we have to put shortname of the alias itself here
276 * otherwise ABI backward compatibility gets broken.
277 */
278 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s",
279 ofmt_alias ? ofmt_alias->shortname : ofmt->shortname);
280 preproc->pre_define(temp);
281 }
282
283 static void emit_dependencies(StrList *list)
284 {
285 FILE *deps;
286 int linepos, len;
287 StrList *l, *nl;
288
289 if (depend_file && strcmp(depend_file, "-")) {
290 deps = fopen(depend_file, "w");
291 if (!deps) {
292 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
293 "unable to write dependency file `%s'", depend_file);
294 return;
295 }
296 } else {
297 deps = stdout;
298 }
299
300 linepos = fprintf(deps, "%s:", depend_target);
301 list_for_each(l, list) {
302 char *file = quote_for_make(l->str);
303 len = strlen(file);
304 if (linepos + len > 62 && linepos > 1) {
305 fprintf(deps, " \\\n ");
306 linepos = 1;
307 }
308 fprintf(deps, " %s", file);
309 linepos += len+1;
310 nasm_free(file);
311 }
312 fprintf(deps, "\n\n");
313
314 list_for_each_safe(l, nl, list) {
315 if (depend_emit_phony)
316 fprintf(deps, "%s:\n\n", l->str);
317 nasm_free(l);
318 }
319
320 if (deps != stdout)
321 fclose(deps);
322 }
323
324 int main(int argc, char **argv)
325 {
326 StrList *depend_list = NULL, **depend_ptr;
327
328 time(&official_compile_time);
329
330 iflag_set(&cpu, IF_PLEVEL);
331 iflag_set(&cmd_cpu, IF_PLEVEL);
332
333 pass0 = 0;
334 want_usage = terminate_after_phase = false;
335 nasm_set_verror(nasm_verror_gnu);
336
337 error_file = stderr;
338
339 tolower_init();
340
341 offsets = raa_init();
342 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
343
344 preproc = &nasmpp;
345 operating_mode = OP_NORMAL;
346
347 /* Define some macros dependent on the runtime, but not
348 on the command line. */
349 define_macros_early();
350
351 parse_cmdline(argc, argv);
352
353 if (terminate_after_phase) {
354 if (want_usage)
355 usage();
356 return 1;
357 }
358
359 /* If debugging info is disabled, suppress any debug calls */
360 if (!using_debug_info)
361 dfmt = &null_debug_form;
362 else if (!dfmt)
363 dfmt = ofmt->default_dfmt;
364
365 if (ofmt->stdmac)
366 preproc->extra_stdmac(ofmt->stdmac);
367
368 /* define some macros dependent of command-line */
369 define_macros_late();
370
371 depend_ptr = (depend_file || (operating_mode & OP_DEPEND)) ? &depend_list : NULL;
372 if (!depend_target)
373 depend_target = quote_for_make(outname);
374
375 if (operating_mode & OP_DEPEND) {
376 char *line;
377
378 if (depend_missing_ok)
379 preproc->include_path(NULL); /* "assume generated" */
380
381 preproc->reset(inname, 0, depend_ptr);
382 if (outname[0] == '\0')
383 ofmt->filename(inname, outname);
384 ofile = NULL;
385 while ((line = preproc->getline()))
386 nasm_free(line);
387 preproc->cleanup(0);
388 } else if (operating_mode & OP_PREPROCESS) {
389 char *line;
390 char *file_name = NULL;
391 int32_t prior_linnum = 0;
392 int lineinc = 0;
393
394 if (*outname) {
395 ofile = fopen(outname, "w");
396 if (!ofile)
397 nasm_error(ERR_FATAL | ERR_NOFILE,
398 "unable to open output file `%s'",
399 outname);
400 } else
401 ofile = NULL;
402
403 location.known = false;
404
405 /* pass = 1; */
406 preproc->reset(inname, 3, depend_ptr);
407 memcpy(warning_on, warning_on_global,
408 (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->init();
463
464 assemble_file(inname, depend_ptr);
465
466 if (!terminate_after_phase) {
467 ofmt->cleanup(using_debug_info);
468 cleanup_labels();
469 fflush(ofile);
470 if (ferror(ofile))
471 nasm_error(ERR_NONFATAL|ERR_NOFILE,
472 "write error on output file `%s'", outname);
473 }
474
475 if (ofile) {
476 fclose(ofile);
477 if (terminate_after_phase)
478 remove(outname);
479 ofile = NULL;
480 }
481 }
482
483 if (depend_list && !terminate_after_phase)
484 emit_dependencies(depend_list);
485
486 if (want_usage)
487 usage();
488
489 raa_free(offsets);
490 saa_free(forwrefs);
491 eval_cleanup();
492 stdscan_cleanup();
493
494 return terminate_after_phase;
495 }
496
497 /*
498 * Get a parameter for a command line option.
499 * First arg must be in the form of e.g. -f...
500 */
501 static char *get_param(char *p, char *q, bool *advance)
502 {
503 *advance = false;
504 if (p[2]) /* the parameter's in the option */
505 return nasm_skip_spaces(p + 2);
506 if (q && q[0]) {
507 *advance = true;
508 return q;
509 }
510 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
511 "option `-%c' requires an argument", p[1]);
512 return NULL;
513 }
514
515 /*
516 * Copy a filename
517 */
518 static void copy_filename(char *dst, const char *src)
519 {
520 size_t len = strlen(src);
521
522 if (len >= (size_t)FILENAME_MAX) {
523 nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
524 return;
525 }
526 strncpy(dst, src, FILENAME_MAX);
527 }
528
529 /*
530 * Convert a string to Make-safe form
531 */
532 static char *quote_for_make(const char *str)
533 {
534 const char *p;
535 char *os, *q;
536
537 size_t n = 1; /* Terminating zero */
538 size_t nbs = 0;
539
540 if (!str)
541 return NULL;
542
543 for (p = str; *p; p++) {
544 switch (*p) {
545 case ' ':
546 case '\t':
547 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
548 n += nbs + 2;
549 nbs = 0;
550 break;
551 case '$':
552 case '#':
553 nbs = 0;
554 n += 2;
555 break;
556 case '\\':
557 nbs++;
558 n++;
559 break;
560 default:
561 nbs = 0;
562 n++;
563 break;
564 }
565 }
566
567 /* Convert N backslashes at the end of filename to 2N backslashes */
568 if (nbs)
569 n += nbs;
570
571 os = q = nasm_malloc(n);
572
573 nbs = 0;
574 for (p = str; *p; p++) {
575 switch (*p) {
576 case ' ':
577 case '\t':
578 while (nbs--)
579 *q++ = '\\';
580 *q++ = '\\';
581 *q++ = *p;
582 break;
583 case '$':
584 *q++ = *p;
585 *q++ = *p;
586 nbs = 0;
587 break;
588 case '#':
589 *q++ = '\\';
590 *q++ = *p;
591 nbs = 0;
592 break;
593 case '\\':
594 *q++ = *p;
595 nbs++;
596 break;
597 default:
598 *q++ = *p;
599 nbs = 0;
600 break;
601 }
602 }
603 while (nbs--)
604 *q++ = '\\';
605
606 *q = '\0';
607
608 return os;
609 }
610
611 struct textargs {
612 const char *label;
613 int value;
614 };
615
616 enum text_options {
617 OPT_PREFIX,
618 OPT_POSTFIX,
619 };
620 struct textargs textopts[] = {
621 {"prefix", OPT_PREFIX},
622 {"postfix", OPT_POSTFIX},
623 {NULL, 0}
624 };
625
626 static void show_version(void)
627 {
628 printf("NASM version %s compiled on %s%s\n",
629 nasm_version, nasm_date, nasm_compile_options);
630 exit(0);
631 }
632
633 static bool stopoptions = false;
634 static bool process_arg(char *p, char *q)
635 {
636 char *param;
637 int i;
638 bool advance = false;
639 bool do_warn;
640
641 if (!p || !p[0])
642 return false;
643
644 if (p[0] == '-' && !stopoptions) {
645 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
646 /* These parameters take values */
647 if (!(param = get_param(p, q, &advance)))
648 return advance;
649 }
650
651 switch (p[1]) {
652 case 's':
653 error_file = stdout;
654 break;
655
656 case 'o': /* output file */
657 copy_filename(outname, param);
658 break;
659
660 case 'f': /* output format */
661 ofmt = ofmt_find(param, &ofmt_alias);
662 if (!ofmt) {
663 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
664 "unrecognised output format `%s' - "
665 "use -hf for a list", param);
666 }
667 dfmt = NULL;
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 dfmt = dfmt_find(ofmt, param);
746 if (!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_fatal(0, "command line: 32-bit segment size requires a higher cpu");
1209
1210 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1211 for (passn = 1; pass0 <= 2; passn++) {
1212 int pass1, pass2;
1213 ldfunc def_label;
1214
1215 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1216 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1217 /* pass0 0, 0, 0, ..., 1, 2 */
1218
1219 def_label = passn > 1 ? redefine_label : define_label;
1220
1221 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1222 cpu = cmd_cpu;
1223 if (pass0 == 2) {
1224 lfmt->init(listname);
1225 }
1226 in_abs_seg = false;
1227 global_offset_changed = 0; /* set by redefine_label */
1228 location.segment = ofmt->section(NULL, pass2, &sb);
1229 globalbits = sb;
1230 if (passn > 1) {
1231 saa_rewind(forwrefs);
1232 forwref = saa_rstruct(forwrefs);
1233 raa_free(offsets);
1234 offsets = raa_init();
1235 }
1236 preproc->reset(fname, pass1, pass1 == 2 ? depend_ptr : NULL);
1237 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1238
1239 globallineno = 0;
1240 if (passn == 1)
1241 location.known = true;
1242 location.offset = offs = get_curr_offs();
1243
1244 while ((line = preproc->getline())) {
1245 enum directives d;
1246 globallineno++;
1247
1248 /*
1249 * Here we parse our directives; this is not handled by the
1250 * 'real' parser. This really should be a separate function.
1251 */
1252 directive = line;
1253 d = getkw(&directive, &value);
1254 if (d) {
1255 int err = 0;
1256
1257 switch (d) {
1258 case D_SEGMENT: /* [SEGMENT n] */
1259 case D_SECTION:
1260 seg = ofmt->section(value, pass2, &sb);
1261 if (seg == NO_SEG) {
1262 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1263 "segment name `%s' not recognized",
1264 value);
1265 } else {
1266 in_abs_seg = false;
1267 location.segment = seg;
1268 }
1269 break;
1270 case D_SECTALIGN: /* [SECTALIGN n] */
1271 if (*value) {
1272 stdscan_reset();
1273 stdscan_set(value);
1274 tokval.t_type = TOKEN_INVALID;
1275 e = evaluate(stdscan, NULL, &tokval, NULL, pass2, NULL);
1276 if (e) {
1277 unsigned int align = (unsigned int)e->value;
1278 if ((uint64_t)e->value > 0x7fffffff) {
1279 /*
1280 * FIXME: Please make some sane message here
1281 * ofmt should have some 'check' method which
1282 * would report segment alignment bounds.
1283 */
1284 nasm_error(ERR_FATAL,
1285 "incorrect segment alignment `%s'", value);
1286 } else if (!is_power2(align)) {
1287 nasm_error(ERR_NONFATAL,
1288 "segment alignment `%s' is not power of two",
1289 value);
1290 }
1291
1292 /* callee should be able to handle all details */
1293 if (location.segment != NO_SEG)
1294 ofmt->sectalign(location.segment, align);
1295 }
1296 }
1297 break;
1298 case D_EXTERN: /* [EXTERN label:special] */
1299 if (*value == '$')
1300 value++; /* skip initial $ if present */
1301 if (pass0 == 2) {
1302 q = value;
1303 while (*q && *q != ':')
1304 q++;
1305 if (*q == ':') {
1306 *q++ = '\0';
1307 ofmt->symdef(value, 0L, 0L, 3, q);
1308 }
1309 } else if (passn == 1) {
1310 q = value;
1311 validid = true;
1312 if (!isidstart(*q))
1313 validid = false;
1314 while (*q && *q != ':') {
1315 if (!isidchar(*q))
1316 validid = false;
1317 q++;
1318 }
1319 if (!validid) {
1320 nasm_error(ERR_NONFATAL,
1321 "identifier expected after EXTERN");
1322 break;
1323 }
1324 if (*q == ':') {
1325 *q++ = '\0';
1326 special = q;
1327 } else
1328 special = NULL;
1329 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1330 int temp = pass0;
1331 pass0 = 1; /* fake pass 1 in labels.c */
1332 declare_as_global(value, special);
1333 define_label(value, seg_alloc(), 0L, NULL,
1334 false, true);
1335 pass0 = temp;
1336 }
1337 } /* else pass0 == 1 */
1338 break;
1339 case D_BITS: /* [BITS bits] */
1340 globalbits = sb = get_bits(value);
1341 break;
1342 case D_GLOBAL: /* [GLOBAL symbol:special] */
1343 if (*value == '$')
1344 value++; /* skip initial $ if present */
1345 if (pass0 == 2) { /* pass 2 */
1346 q = value;
1347 while (*q && *q != ':')
1348 q++;
1349 if (*q == ':') {
1350 *q++ = '\0';
1351 ofmt->symdef(value, 0L, 0L, 3, q);
1352 }
1353 } else if (pass2 == 1) { /* pass == 1 */
1354 q = value;
1355 validid = true;
1356 if (!isidstart(*q))
1357 validid = false;
1358 while (*q && *q != ':') {
1359 if (!isidchar(*q))
1360 validid = false;
1361 q++;
1362 }
1363 if (!validid) {
1364 nasm_error(ERR_NONFATAL,
1365 "identifier expected after GLOBAL");
1366 break;
1367 }
1368 if (*q == ':') {
1369 *q++ = '\0';
1370 special = q;
1371 } else
1372 special = NULL;
1373 declare_as_global(value, special);
1374 } /* pass == 1 */
1375 break;
1376 case D_COMMON: /* [COMMON symbol size:special] */
1377 {
1378 int64_t size;
1379
1380 if (*value == '$')
1381 value++; /* skip initial $ if present */
1382 p = value;
1383 validid = true;
1384 if (!isidstart(*p))
1385 validid = false;
1386 while (*p && !nasm_isspace(*p)) {
1387 if (!isidchar(*p))
1388 validid = false;
1389 p++;
1390 }
1391 if (!validid) {
1392 nasm_error(ERR_NONFATAL,
1393 "identifier expected after COMMON");
1394 break;
1395 }
1396 if (*p) {
1397 p = nasm_zap_spaces_fwd(p);
1398 q = p;
1399 while (*q && *q != ':')
1400 q++;
1401 if (*q == ':') {
1402 *q++ = '\0';
1403 special = q;
1404 } else {
1405 special = NULL;
1406 }
1407 size = readnum(p, &rn_error);
1408 if (rn_error) {
1409 nasm_error(ERR_NONFATAL,
1410 "invalid size specified"
1411 " in COMMON declaration");
1412 break;
1413 }
1414 } else {
1415 nasm_error(ERR_NONFATAL,
1416 "no size specified in"
1417 " COMMON declaration");
1418 break;
1419 }
1420
1421 if (pass0 < 2) {
1422 define_common(value, seg_alloc(), size, special);
1423 } else if (pass0 == 2) {
1424 if (special)
1425 ofmt->symdef(value, 0L, 0L, 3, special);
1426 }
1427 break;
1428 }
1429 case D_ABSOLUTE: /* [ABSOLUTE address] */
1430 stdscan_reset();
1431 stdscan_set(value);
1432 tokval.t_type = TOKEN_INVALID;
1433 e = evaluate(stdscan, NULL, &tokval, NULL, pass2, NULL);
1434 if (e) {
1435 if (!is_reloc(e))
1436 nasm_error(pass0 ==
1437 1 ? ERR_NONFATAL : ERR_PANIC,
1438 "cannot use non-relocatable expression as "
1439 "ABSOLUTE address");
1440 else {
1441 abs_seg = reloc_seg(e);
1442 abs_offset = reloc_value(e);
1443 }
1444 } else if (passn == 1)
1445 abs_offset = 0x100; /* don't go near zero in case of / */
1446 else
1447 nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
1448 "in pass two");
1449 in_abs_seg = true;
1450 location.segment = NO_SEG;
1451 break;
1452 case D_DEBUG: /* [DEBUG] */
1453 {
1454 char debugid[128];
1455 bool badid, overlong;
1456
1457 p = value;
1458 q = debugid;
1459 badid = overlong = false;
1460 if (!isidstart(*p)) {
1461 badid = true;
1462 } else {
1463 while (*p && !nasm_isspace(*p)) {
1464 if (q >= debugid + sizeof debugid - 1) {
1465 overlong = true;
1466 break;
1467 }
1468 if (!isidchar(*p))
1469 badid = true;
1470 *q++ = *p++;
1471 }
1472 *q = 0;
1473 }
1474 if (badid) {
1475 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1476 "identifier expected after DEBUG");
1477 break;
1478 }
1479 if (overlong) {
1480 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1481 "DEBUG identifier too long");
1482 break;
1483 }
1484 p = nasm_skip_spaces(p);
1485 if (pass0 == 2)
1486 dfmt->debug_directive(debugid, p);
1487 break;
1488 }
1489 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1490 value = nasm_skip_spaces(value);
1491 switch(*value) {
1492 case '-': validid = 0; value++; break;
1493 case '+': validid = 1; value++; break;
1494 case '*': validid = 2; value++; break;
1495 default: validid = 1; break;
1496 }
1497
1498 for (i = 1; i <= ERR_WARN_MAX; i++)
1499 if (!nasm_stricmp(value, warnings[i].name))
1500 break;
1501 if (i <= ERR_WARN_MAX) {
1502 switch(validid) {
1503 case 0:
1504 warning_on[i] = false;
1505 break;
1506 case 1:
1507 warning_on[i] = true;
1508 break;
1509 case 2:
1510 warning_on[i] = warning_on_global[i];
1511 break;
1512 }
1513 } else
1514 nasm_error(ERR_NONFATAL,
1515 "invalid warning id in WARNING directive");
1516 break;
1517 case D_CPU: /* [CPU] */
1518 cpu = get_cpu(value);
1519 break;
1520 case D_LIST: /* [LIST {+|-}] */
1521 value = nasm_skip_spaces(value);
1522 if (*value == '+') {
1523 user_nolist = 0;
1524 } else {
1525 if (*value == '-') {
1526 user_nolist = 1;
1527 } else {
1528 err = 1;
1529 }
1530 }
1531 break;
1532 case D_DEFAULT: /* [DEFAULT] */
1533 stdscan_reset();
1534 stdscan_set(value);
1535 tokval.t_type = TOKEN_INVALID;
1536 if (stdscan(NULL, &tokval) != TOKEN_INVALID) {
1537 switch ((int)tokval.t_integer) {
1538 case S_REL:
1539 globalrel = 1;
1540 break;
1541 case S_ABS:
1542 globalrel = 0;
1543 break;
1544 case P_BND:
1545 globalbnd = 1;
1546 break;
1547 case P_NOBND:
1548 globalbnd = 0;
1549 break;
1550 default:
1551 err = 1;
1552 break;
1553 }
1554 } else {
1555 err = 1;
1556 }
1557 break;
1558 case D_FLOAT:
1559 if (float_option(value)) {
1560 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1561 "unknown 'float' directive: %s",
1562 value);
1563 }
1564 break;
1565 default:
1566 if (ofmt->directive(d, value, pass2))
1567 break;
1568 /* else fall through */
1569 case D_unknown:
1570 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1571 "unrecognised directive [%s]",
1572 directive);
1573 break;
1574 }
1575 if (err) {
1576 nasm_error(ERR_NONFATAL,
1577 "invalid parameter to [%s] directive",
1578 directive);
1579 }
1580 } else { /* it isn't a directive */
1581 parse_line(pass1, line, &output_ins, def_label);
1582
1583 if (optimizing > 0) {
1584 if (forwref != NULL && globallineno == forwref->lineno) {
1585 output_ins.forw_ref = true;
1586 do {
1587 output_ins.oprs[forwref->operand].opflags |= OPFLAG_FORWARD;
1588 forwref = saa_rstruct(forwrefs);
1589 } while (forwref != NULL
1590 && forwref->lineno == globallineno);
1591 } else
1592 output_ins.forw_ref = false;
1593
1594 if (output_ins.forw_ref) {
1595 if (passn == 1) {
1596 for (i = 0; i < output_ins.operands; i++) {
1597 if (output_ins.oprs[i].opflags & OPFLAG_FORWARD) {
1598 struct forwrefinfo *fwinf = (struct forwrefinfo *)saa_wstruct(forwrefs);
1599 fwinf->lineno = globallineno;
1600 fwinf->operand = i;
1601 }
1602 }
1603 }
1604 }
1605 }
1606
1607 /* forw_ref */
1608 if (output_ins.opcode == I_EQU) {
1609 if (pass1 == 1) {
1610 /*
1611 * Special `..' EQUs get processed in pass two,
1612 * except `..@' macro-processor EQUs which are done
1613 * in the normal place.
1614 */
1615 if (!output_ins.label)
1616 nasm_error(ERR_NONFATAL,
1617 "EQU not preceded by label");
1618
1619 else if (output_ins.label[0] != '.' ||
1620 output_ins.label[1] != '.' ||
1621 output_ins.label[2] == '@') {
1622 if (output_ins.operands == 1 &&
1623 (output_ins.oprs[0].type & IMMEDIATE) &&
1624 output_ins.oprs[0].wrt == NO_SEG) {
1625 bool isext = !!(output_ins.oprs[0].opflags & OPFLAG_EXTERN);
1626 def_label(output_ins.label,
1627 output_ins.oprs[0].segment,
1628 output_ins.oprs[0].offset, NULL,
1629 false, isext);
1630 } else if (output_ins.operands == 2
1631 && (output_ins.oprs[0].type & IMMEDIATE)
1632 && (output_ins.oprs[0].type & COLON)
1633 && output_ins.oprs[0].segment == NO_SEG
1634 && output_ins.oprs[0].wrt == NO_SEG
1635 && (output_ins.oprs[1].type & IMMEDIATE)
1636 && output_ins.oprs[1].segment == NO_SEG
1637 && output_ins.oprs[1].wrt == NO_SEG) {
1638 def_label(output_ins.label,
1639 output_ins.oprs[0].offset | SEG_ABS,
1640 output_ins.oprs[1].offset,
1641 NULL, false, false);
1642 } else
1643 nasm_error(ERR_NONFATAL,
1644 "bad syntax for EQU");
1645 }
1646 } else {
1647 /*
1648 * Special `..' EQUs get processed here, except
1649 * `..@' macro processor EQUs which are done above.
1650 */
1651 if (output_ins.label[0] == '.' &&
1652 output_ins.label[1] == '.' &&
1653 output_ins.label[2] != '@') {
1654 if (output_ins.operands == 1 &&
1655 (output_ins.oprs[0].type & IMMEDIATE)) {
1656 define_label(output_ins.label,
1657 output_ins.oprs[0].segment,
1658 output_ins.oprs[0].offset,
1659 NULL, false, false);
1660 } else if (output_ins.operands == 2
1661 && (output_ins.oprs[0].type & IMMEDIATE)
1662 && (output_ins.oprs[0].type & COLON)
1663 && output_ins.oprs[0].segment == NO_SEG
1664 && (output_ins.oprs[1].type & IMMEDIATE)
1665 && output_ins.oprs[1].segment == NO_SEG) {
1666 define_label(output_ins.label,
1667 output_ins.oprs[0].offset | SEG_ABS,
1668 output_ins.oprs[1].offset,
1669 NULL, false, false);
1670 } else
1671 nasm_error(ERR_NONFATAL,
1672 "bad syntax for EQU");
1673 }
1674 }
1675 } else { /* instruction isn't an EQU */
1676
1677 if (pass1 == 1) {
1678
1679 int64_t l = insn_size(location.segment, offs, sb, cpu,
1680 &output_ins);
1681
1682 /* if (using_debug_info) && output_ins.opcode != -1) */
1683 if (using_debug_info)
1684 { /* fbk 03/25/01 */
1685 /* this is done here so we can do debug type info */
1686 int32_t typeinfo =
1687 TYS_ELEMENTS(output_ins.operands);
1688 switch (output_ins.opcode) {
1689 case I_RESB:
1690 typeinfo =
1691 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_BYTE;
1692 break;
1693 case I_RESW:
1694 typeinfo =
1695 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_WORD;
1696 break;
1697 case I_RESD:
1698 typeinfo =
1699 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_DWORD;
1700 break;
1701 case I_RESQ:
1702 typeinfo =
1703 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_QWORD;
1704 break;
1705 case I_REST:
1706 typeinfo =
1707 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_TBYTE;
1708 break;
1709 case I_RESO:
1710 typeinfo =
1711 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_OWORD;
1712 break;
1713 case I_RESY:
1714 typeinfo =
1715 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_YWORD;
1716 break;
1717 case I_DB:
1718 typeinfo |= TY_BYTE;
1719 break;
1720 case I_DW:
1721 typeinfo |= TY_WORD;
1722 break;
1723 case I_DD:
1724 if (output_ins.eops_float)
1725 typeinfo |= TY_FLOAT;
1726 else
1727 typeinfo |= TY_DWORD;
1728 break;
1729 case I_DQ:
1730 typeinfo |= TY_QWORD;
1731 break;
1732 case I_DT:
1733 typeinfo |= TY_TBYTE;
1734 break;
1735 case I_DO:
1736 typeinfo |= TY_OWORD;
1737 break;
1738 case I_DY:
1739 typeinfo |= TY_YWORD;
1740 break;
1741 default:
1742 typeinfo = TY_LABEL;
1743
1744 }
1745
1746 dfmt->debug_typevalue(typeinfo);
1747 }
1748 if (l != -1) {
1749 offs += l;
1750 set_curr_offs(offs);
1751 }
1752 /*
1753 * else l == -1 => invalid instruction, which will be
1754 * flagged as an error on pass 2
1755 */
1756
1757 } else {
1758 offs += assemble(location.segment, offs, sb, cpu,
1759 &output_ins);
1760 set_curr_offs(offs);
1761
1762 }
1763 } /* not an EQU */
1764 cleanup_insn(&output_ins);
1765 }
1766 nasm_free(line);
1767 location.offset = offs = get_curr_offs();
1768 } /* end while (line = preproc->getline... */
1769
1770 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1771 nasm_error(ERR_NONFATAL,
1772 "phase error detected at end of assembly.");
1773
1774 if (pass1 == 1)
1775 preproc->cleanup(1);
1776
1777 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1778 pass0++;
1779 } else if (global_offset_changed &&
1780 global_offset_changed < prev_offset_changed) {
1781 prev_offset_changed = global_offset_changed;
1782 stall_count = 0;
1783 } else {
1784 stall_count++;
1785 }
1786
1787 if (terminate_after_phase)
1788 break;
1789
1790 if ((stall_count > 997) || (passn >= pass_max)) {
1791 /* We get here if the labels don't converge
1792 * Example: FOO equ FOO + 1
1793 */
1794 nasm_error(ERR_NONFATAL,
1795 "Can't find valid values for all labels "
1796 "after %d passes, giving up.", passn);
1797 nasm_error(ERR_NONFATAL,
1798 "Possible causes: recursive EQUs, macro abuse.");
1799 break;
1800 }
1801 }
1802
1803 preproc->cleanup(0);
1804 lfmt->cleanup();
1805 if (!terminate_after_phase && opt_verbose_info) {
1806 /* -On and -Ov switches */
1807 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1808 }
1809 }
1810
1811 static enum directives getkw(char **directive, char **value)
1812 {
1813 char *p, *q, *buf;
1814
1815 buf = nasm_skip_spaces(*directive);
1816
1817 /* it should be enclosed in [ ] */
1818 if (*buf != '[')
1819 return D_none;
1820 q = strchr(buf, ']');
1821 if (!q)
1822 return D_none;
1823
1824 /* stip off the comments */
1825 p = strchr(buf, ';');
1826 if (p) {
1827 if (p < q) /* ouch! somwhere inside */
1828 return D_none;
1829 *p = '\0';
1830 }
1831
1832 /* no brace, no trailing spaces */
1833 *q = '\0';
1834 nasm_zap_spaces_rev(--q);
1835
1836 /* directive */
1837 p = nasm_skip_spaces(++buf);
1838 q = nasm_skip_word(p);
1839 if (!q)
1840 return D_none; /* sigh... no value there */
1841 *q = '\0';
1842 *directive = p;
1843
1844 /* and value finally */
1845 p = nasm_skip_spaces(++q);
1846 *value = p;
1847
1848 return find_directive(*directive);
1849 }
1850
1851 /**
1852 * gnu style error reporting
1853 * This function prints an error message to error_file in the
1854 * style used by GNU. An example would be:
1855 * file.asm:50: error: blah blah blah
1856 * where file.asm is the name of the file, 50 is the line number on
1857 * which the error occurs (or is detected) and "error:" is one of
1858 * the possible optional diagnostics -- it can be "error" or "warning"
1859 * or something else. Finally the line terminates with the actual
1860 * error message.
1861 *
1862 * @param severity the severity of the warning or error
1863 * @param fmt the printf style format string
1864 */
1865 static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
1866 {
1867 char *currentfile = NULL;
1868 int32_t lineno = 0;
1869
1870 if (is_suppressed_warning(severity))
1871 return;
1872
1873 if (!(severity & ERR_NOFILE))
1874 src_get(&lineno, &currentfile);
1875
1876 if (!skip_this_pass(severity)) {
1877 if (currentfile) {
1878 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1879 nasm_free(currentfile);
1880 } else {
1881 fputs("nasm: ", error_file);
1882 }
1883 }
1884
1885 nasm_verror_common(severity, fmt, ap);
1886 }
1887
1888 /**
1889 * MS style error reporting
1890 * This function prints an error message to error_file in the
1891 * style used by Visual C and some other Microsoft tools. An example
1892 * would be:
1893 * file.asm(50) : error: blah blah blah
1894 * where file.asm is the name of the file, 50 is the line number on
1895 * which the error occurs (or is detected) and "error:" is one of
1896 * the possible optional diagnostics -- it can be "error" or "warning"
1897 * or something else. Finally the line terminates with the actual
1898 * error message.
1899 *
1900 * @param severity the severity of the warning or error
1901 * @param fmt the printf style format string
1902 */
1903 static void nasm_verror_vc(int severity, const char *fmt, va_list ap)
1904 {
1905 char *currentfile = NULL;
1906 int32_t lineno = 0;
1907
1908 if (is_suppressed_warning(severity))
1909 return;
1910
1911 if (!(severity & ERR_NOFILE))
1912 src_get(&lineno, &currentfile);
1913
1914 if (!skip_this_pass(severity)) {
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
1923 nasm_verror_common(severity, fmt, ap);
1924 }
1925
1926 /**
1927 * check for supressed warning
1928 * checks for suppressed warning or pass one only warning and we're
1929 * not in pass 1
1930 *
1931 * @param severity the severity of the warning or error
1932 * @return true if we should abort error/warning printing
1933 */
1934 static bool is_suppressed_warning(int severity)
1935 {
1936 /* Not a warning at all */
1937 if ((severity & ERR_MASK) != ERR_WARNING)
1938 return false;
1939
1940 /* Might be a warning but suppresed explicitly */
1941 if (severity & ERR_WARN_MASK)
1942 return !warning_on[WARN_IDX(severity)];
1943 else
1944 return false;
1945 }
1946
1947 static bool skip_this_pass(int severity)
1948 {
1949 /* See if it's a pass-one only warning and we're not in pass one. */
1950 if ((severity & ERR_MASK) > ERR_WARNING)
1951 return false;
1952
1953 if (((severity & ERR_PASS1) && pass0 != 1) ||
1954 ((severity & ERR_PASS2) && pass0 != 2))
1955 return true;
1956
1957 return false;
1958 }
1959
1960 /**
1961 * common error reporting
1962 * This is the common back end of the error reporting schemes currently
1963 * implemented. It prints the nature of the warning and then the
1964 * specific error message to error_file and may or may not return. It
1965 * doesn't return if the error severity is a "panic" or "debug" type.
1966 *
1967 * @param severity the severity of the warning or error
1968 * @param fmt the printf style format string
1969 */
1970 static void nasm_verror_common(int severity, const char *fmt, va_list args)
1971 {
1972 char msg[1024];
1973 const char *pfx;
1974
1975 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1976 case ERR_WARNING:
1977 pfx = "warning: ";
1978 break;
1979 case ERR_NONFATAL:
1980 pfx = "error: ";
1981 break;
1982 case ERR_FATAL:
1983 pfx = "fatal: ";
1984 break;
1985 case ERR_PANIC:
1986 pfx = "panic: ";
1987 break;
1988 case ERR_DEBUG:
1989 pfx = "debug: ";
1990 break;
1991 default:
1992 pfx = "";
1993 break;
1994 }
1995
1996 vsnprintf(msg, sizeof msg, fmt, args);
1997
1998 if (!skip_this_pass(severity))
1999 fprintf(error_file, "%s%s\n", pfx, msg);
2000
2001 /*
2002 * Don't suppress this with skip_this_pass(), or we don't get
2003 * preprocessor warnings in the list file
2004 */
2005 if ((severity & ERR_MASK) >= ERR_WARNING)
2006 lfmt->error(severity, pfx, msg);
2007
2008 if (severity & ERR_USAGE)
2009 want_usage = true;
2010
2011 switch (severity & ERR_MASK) {
2012 case ERR_DEBUG:
2013 /* no further action, by definition */
2014 break;
2015 case ERR_WARNING:
2016 /* Treat warnings as errors */
2017 if (warning_on[WARN_IDX(ERR_WARN_TERM)])
2018 terminate_after_phase = true;
2019 break;
2020 case ERR_NONFATAL:
2021 terminate_after_phase = true;
2022 break;
2023 case ERR_FATAL:
2024 if (ofile) {
2025 fclose(ofile);
2026 remove(outname);
2027 ofile = NULL;
2028 }
2029 if (want_usage)
2030 usage();
2031 exit(1); /* instantly die */
2032 break; /* placate silly compilers */
2033 case ERR_PANIC:
2034 fflush(NULL);
2035 /* abort(); */ /* halt, catch fire, and dump core */
2036 if (ofile) {
2037 fclose(ofile);
2038 remove(outname);
2039 ofile = NULL;
2040 }
2041 exit(3);
2042 break;
2043 }
2044 }
2045
2046 static void usage(void)
2047 {
2048 fputs("type `nasm -h' for help\n", error_file);
2049 }
2050
2051 static iflag_t get_cpu(char *value)
2052 {
2053 iflag_t r;
2054
2055 iflag_clear_all(&r);
2056
2057 if (!strcmp(value, "8086"))
2058 iflag_set(&r, IF_8086);
2059 else if (!strcmp(value, "186"))
2060 iflag_set(&r, IF_186);
2061 else if (!strcmp(value, "286"))
2062 iflag_set(&r, IF_286);
2063 else if (!strcmp(value, "386"))
2064 iflag_set(&r, IF_386);
2065 else if (!strcmp(value, "486"))
2066 iflag_set(&r, IF_486);
2067 else if (!strcmp(value, "586") ||
2068 !nasm_stricmp(value, "pentium"))
2069 iflag_set(&r, IF_PENT);
2070 else if (!strcmp(value, "686") ||
2071 !nasm_stricmp(value, "ppro") ||
2072 !nasm_stricmp(value, "pentiumpro") ||
2073 !nasm_stricmp(value, "p2"))
2074 iflag_set(&r, IF_P6);
2075 else if (!nasm_stricmp(value, "p3") ||
2076 !nasm_stricmp(value, "katmai"))
2077 iflag_set(&r, IF_KATMAI);
2078 else if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2079 !nasm_stricmp(value, "willamette"))
2080 iflag_set(&r, IF_WILLAMETTE);
2081 else if (!nasm_stricmp(value, "prescott"))
2082 iflag_set(&r, IF_PRESCOTT);
2083 else if (!nasm_stricmp(value, "x64") ||
2084 !nasm_stricmp(value, "x86-64"))
2085 iflag_set(&r, IF_X86_64);
2086 else if (!nasm_stricmp(value, "ia64") ||
2087 !nasm_stricmp(value, "ia-64") ||
2088 !nasm_stricmp(value, "itanium")||
2089 !nasm_stricmp(value, "itanic") ||
2090 !nasm_stricmp(value, "merced"))
2091 iflag_set(&r, IF_IA64);
2092 else {
2093 iflag_set(&r, IF_PLEVEL);
2094 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2095 "unknown 'cpu' type");
2096 }
2097 return r;
2098 }
2099
2100 static int get_bits(char *value)
2101 {
2102 int i;
2103
2104 if ((i = atoi(value)) == 16)
2105 return i; /* set for a 16-bit segment */
2106 else if (i == 32) {
2107 if (iflag_ffs(&cpu) < IF_386) {
2108 nasm_error(ERR_NONFATAL,
2109 "cannot specify 32-bit segment on processor below a 386");
2110 i = 16;
2111 }
2112 } else if (i == 64) {
2113 if (iflag_ffs(&cpu) < IF_X86_64) {
2114 nasm_error(ERR_NONFATAL,
2115 "cannot specify 64-bit segment on processor below an x86-64");
2116 i = 16;
2117 }
2118 } else {
2119 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2120 "`%s' is not a valid segment size; must be 16, 32 or 64",
2121 value);
2122 i = 16;
2123 }
2124 return i;
2125 }
The Netwide Assembler