?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
testcase: Remove escape characters - '\'
[nasm.git] / nasm.c
blobb83810d247e5ea69a92311c9bb618f131e7b4fc4
1 /* ----------------------------------------------------------------------- *
2 *
3 * Copyright 1996-2013 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 maxbits = 0;
91 int globalrel = 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 enum op_type {
131 op_normal, /* Preprocess and assemble */
132 op_preprocess, /* Preprocess only */
133 op_depend, /* Generate dependencies */
134 };
135 static enum op_type operating_mode;
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 };
170
171 static bool want_usage;
172 static bool terminate_after_phase;
173 int user_nolist = 0; /* fbk 9/2/00 */
174
175 static char *quote_for_make(const char *str);
176
177 static int64_t get_curr_offs(void)
178 {
179 return in_abs_seg ? abs_offset : raa_read(offsets, location.segment);
180 }
181
182 static void set_curr_offs(int64_t l_off)
183 {
184 if (in_abs_seg)
185 abs_offset = l_off;
186 else
187 offsets = raa_write(offsets, location.segment, l_off);
188 }
189
190 static void nasm_fputs(const char *line, FILE * outfile)
191 {
192 if (outfile) {
193 fputs(line, outfile);
194 putc('\n', outfile);
195 } else
196 puts(line);
197 }
198
199 /* Convert a struct tm to a POSIX-style time constant */
200 static int64_t posix_mktime(struct tm *tm)
201 {
202 int64_t t;
203 int64_t y = tm->tm_year;
204
205 /* See IEEE 1003.1:2004, section 4.14 */
206
207 t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
208 t += tm->tm_yday;
209 t *= 24;
210 t += tm->tm_hour;
211 t *= 60;
212 t += tm->tm_min;
213 t *= 60;
214 t += tm->tm_sec;
215
216 return t;
217 }
218
219 static void define_macros_early(void)
220 {
221 char temp[128];
222 struct tm lt, *lt_p, gm, *gm_p;
223 int64_t posix_time;
224
225 lt_p = localtime(&official_compile_time);
226 if (lt_p) {
227 lt = *lt_p;
228
229 strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", &lt);
230 preproc->pre_define(temp);
231 strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", &lt);
232 preproc->pre_define(temp);
233 strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", &lt);
234 preproc->pre_define(temp);
235 strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", &lt);
236 preproc->pre_define(temp);
237 }
238
239 gm_p = gmtime(&official_compile_time);
240 if (gm_p) {
241 gm = *gm_p;
242
243 strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
244 preproc->pre_define(temp);
245 strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
246 preproc->pre_define(temp);
247 strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
248 preproc->pre_define(temp);
249 strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
250 preproc->pre_define(temp);
251 }
252
253 if (gm_p)
254 posix_time = posix_mktime(&gm);
255 else if (lt_p)
256 posix_time = posix_mktime(&lt);
257 else
258 posix_time = 0;
259
260 if (posix_time) {
261 snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
262 preproc->pre_define(temp);
263 }
264 }
265
266 static void define_macros_late(void)
267 {
268 char temp[128];
269
270 /*
271 * In case if output format is defined by alias
272 * we have to put shortname of the alias itself here
273 * otherwise ABI backward compatibility gets broken.
274 */
275 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s",
276 ofmt_alias ? ofmt_alias->shortname : ofmt->shortname);
277 preproc->pre_define(temp);
278 }
279
280 static void emit_dependencies(StrList *list)
281 {
282 FILE *deps;
283 int linepos, len;
284 StrList *l, *nl;
285
286 if (depend_file && strcmp(depend_file, "-")) {
287 deps = fopen(depend_file, "w");
288 if (!deps) {
289 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
290 "unable to write dependency file `%s'", depend_file);
291 return;
292 }
293 } else {
294 deps = stdout;
295 }
296
297 linepos = fprintf(deps, "%s:", depend_target);
298 list_for_each(l, list) {
299 char *file = quote_for_make(l->str);
300 len = strlen(file);
301 if (linepos + len > 62 && linepos > 1) {
302 fprintf(deps, " \\\n ");
303 linepos = 1;
304 }
305 fprintf(deps, " %s", file);
306 linepos += len+1;
307 nasm_free(file);
308 }
309 fprintf(deps, "\n\n");
310
311 list_for_each_safe(l, nl, list) {
312 if (depend_emit_phony)
313 fprintf(deps, "%s:\n\n", l->str);
314 nasm_free(l);
315 }
316
317 if (deps != stdout)
318 fclose(deps);
319 }
320
321 int main(int argc, char **argv)
322 {
323 StrList *depend_list = NULL, **depend_ptr;
324
325 time(&official_compile_time);
326
327 iflag_set(&cpu, IF_PLEVEL);
328 iflag_set(&cmd_cpu, IF_PLEVEL);
329
330 pass0 = 0;
331 want_usage = terminate_after_phase = false;
332 nasm_set_verror(nasm_verror_gnu);
333
334 error_file = stderr;
335
336 tolower_init();
337
338 nasm_init_malloc_error();
339 offsets = raa_init();
340 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
341
342 preproc = &nasmpp;
343 operating_mode = op_normal;
344
345 seg_init();
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 ofmt->current_dfmt = &null_debug_form;
362
363 if (ofmt->stdmac)
364 preproc->extra_stdmac(ofmt->stdmac);
365 parser_global_info(&location);
366 eval_global_info(ofmt, lookup_label, &location);
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 switch (operating_mode) {
376 case op_depend:
377 {
378 char *line;
379
380 if (depend_missing_ok)
381 preproc->include_path(NULL); /* "assume generated" */
382
383 preproc->reset(inname, 0, &nasmlist, depend_ptr);
384 if (outname[0] == '\0')
385 ofmt->filename(inname, outname);
386 ofile = NULL;
387 while ((line = preproc->getline()))
388 nasm_free(line);
389 preproc->cleanup(0);
390 }
391 break;
392
393 case op_preprocess:
394 {
395 char *line;
396 char *file_name = NULL;
397 int32_t prior_linnum = 0;
398 int lineinc = 0;
399
400 if (*outname) {
401 ofile = fopen(outname, "w");
402 if (!ofile)
403 nasm_error(ERR_FATAL | ERR_NOFILE,
404 "unable to open output file `%s'",
405 outname);
406 } else
407 ofile = NULL;
408
409 location.known = false;
410
411 /* pass = 1; */
412 preproc->reset(inname, 3, &nasmlist, depend_ptr);
413 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
414
415 while ((line = preproc->getline())) {
416 /*
417 * We generate %line directives if needed for later programs
418 */
419 int32_t linnum = prior_linnum += lineinc;
420 int altline = src_get(&linnum, &file_name);
421 if (altline) {
422 if (altline == 1 && lineinc == 1)
423 nasm_fputs("", ofile);
424 else {
425 lineinc = (altline != -1 || lineinc != 1);
426 fprintf(ofile ? ofile : stdout,
427 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
428 file_name);
429 }
430 prior_linnum = linnum;
431 }
432 nasm_fputs(line, ofile);
433 nasm_free(line);
434 }
435 nasm_free(file_name);
436 preproc->cleanup(0);
437 if (ofile)
438 fclose(ofile);
439 if (ofile && terminate_after_phase)
440 remove(outname);
441 ofile = NULL;
442 }
443 break;
444
445 case op_normal:
446 {
447 /*
448 * We must call ofmt->filename _anyway_, even if the user
449 * has specified their own output file, because some
450 * formats (eg OBJ and COFF) use ofmt->filename to find out
451 * the name of the input file and then put that inside the
452 * file.
453 */
454 ofmt->filename(inname, outname);
455
456 ofile = fopen(outname, (ofmt->flags & OFMT_TEXT) ? "w" : "wb");
457 if (!ofile) {
458 nasm_error(ERR_FATAL | ERR_NOFILE,
459 "unable to open output file `%s'", outname);
460 }
461
462 /*
463 * We must call init_labels() before ofmt->init() since
464 * some object formats will want to define labels in their
465 * init routines. (eg OS/2 defines the FLAT group)
466 */
467 init_labels();
468
469 ofmt->init();
470 dfmt = ofmt->current_dfmt;
471 dfmt->init();
472
473 assemble_file(inname, depend_ptr);
474
475 if (!terminate_after_phase) {
476 ofmt->cleanup(using_debug_info);
477 cleanup_labels();
478 fflush(ofile);
479 if (ferror(ofile)) {
480 nasm_error(ERR_NONFATAL|ERR_NOFILE,
481 "write error on output file `%s'", outname);
482 }
483 }
484
485 if (ofile) {
486 fclose(ofile);
487 if (terminate_after_phase)
488 remove(outname);
489 ofile = NULL;
490 }
491 }
492 break;
493 }
494
495 if (depend_list && !terminate_after_phase)
496 emit_dependencies(depend_list);
497
498 if (want_usage)
499 usage();
500
501 raa_free(offsets);
502 saa_free(forwrefs);
503 eval_cleanup();
504 stdscan_cleanup();
505
506 return terminate_after_phase;
507 }
508
509 /*
510 * Get a parameter for a command line option.
511 * First arg must be in the form of e.g. -f...
512 */
513 static char *get_param(char *p, char *q, bool *advance)
514 {
515 *advance = false;
516 if (p[2]) /* the parameter's in the option */
517 return nasm_skip_spaces(p + 2);
518 if (q && q[0]) {
519 *advance = true;
520 return q;
521 }
522 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
523 "option `-%c' requires an argument", p[1]);
524 return NULL;
525 }
526
527 /*
528 * Copy a filename
529 */
530 static void copy_filename(char *dst, const char *src)
531 {
532 size_t len = strlen(src);
533
534 if (len >= (size_t)FILENAME_MAX) {
535 nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
536 return;
537 }
538 strncpy(dst, src, FILENAME_MAX);
539 }
540
541 /*
542 * Convert a string to Make-safe form
543 */
544 static char *quote_for_make(const char *str)
545 {
546 const char *p;
547 char *os, *q;
548
549 size_t n = 1; /* Terminating zero */
550 size_t nbs = 0;
551
552 if (!str)
553 return NULL;
554
555 for (p = str; *p; p++) {
556 switch (*p) {
557 case ' ':
558 case '\t':
559 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
560 n += nbs + 2;
561 nbs = 0;
562 break;
563 case '$':
564 case '#':
565 nbs = 0;
566 n += 2;
567 break;
568 case '\\':
569 nbs++;
570 n++;
571 break;
572 default:
573 nbs = 0;
574 n++;
575 break;
576 }
577 }
578
579 /* Convert N backslashes at the end of filename to 2N backslashes */
580 if (nbs)
581 n += nbs;
582
583 os = q = nasm_malloc(n);
584
585 nbs = 0;
586 for (p = str; *p; p++) {
587 switch (*p) {
588 case ' ':
589 case '\t':
590 while (nbs--)
591 *q++ = '\\';
592 *q++ = '\\';
593 *q++ = *p;
594 break;
595 case '$':
596 *q++ = *p;
597 *q++ = *p;
598 nbs = 0;
599 break;
600 case '#':
601 *q++ = '\\';
602 *q++ = *p;
603 nbs = 0;
604 break;
605 case '\\':
606 *q++ = *p;
607 nbs++;
608 break;
609 default:
610 *q++ = *p;
611 nbs = 0;
612 break;
613 }
614 }
615 while (nbs--)
616 *q++ = '\\';
617
618 *q = '\0';
619
620 return os;
621 }
622
623 struct textargs {
624 const char *label;
625 int value;
626 };
627
628 #define OPT_PREFIX 0
629 #define OPT_POSTFIX 1
630 struct textargs textopts[] = {
631 {"prefix", OPT_PREFIX},
632 {"postfix", OPT_POSTFIX},
633 {NULL, 0}
634 };
635
636 static bool stopoptions = false;
637 static bool process_arg(char *p, char *q)
638 {
639 char *param;
640 int i;
641 bool advance = false;
642 bool do_warn;
643
644 if (!p || !p[0])
645 return false;
646
647 if (p[0] == '-' && !stopoptions) {
648 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
649 /* These parameters take values */
650 if (!(param = get_param(p, q, &advance)))
651 return advance;
652 }
653
654 switch (p[1]) {
655 case 's':
656 error_file = stdout;
657 break;
658
659 case 'o': /* output file */
660 copy_filename(outname, param);
661 break;
662
663 case 'f': /* output format */
664 ofmt = ofmt_find(param, &ofmt_alias);
665 if (!ofmt) {
666 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
667 "unrecognised output format `%s' - "
668 "use -hf for a list", param);
669 }
670 break;
671
672 case 'O': /* Optimization level */
673 {
674 int opt;
675
676 if (!*param) {
677 /* Naked -O == -Ox */
678 optimizing = MAX_OPTIMIZE;
679 } else {
680 while (*param) {
681 switch (*param) {
682 case '0': case '1': case '2': case '3': case '4':
683 case '5': case '6': case '7': case '8': case '9':
684 opt = strtoul(param, &param, 10);
685
686 /* -O0 -> optimizing == -1, 0.98 behaviour */
687 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
688 if (opt < 2)
689 optimizing = opt - 1;
690 else
691 optimizing = opt;
692 break;
693
694 case 'v':
695 case '+':
696 param++;
697 opt_verbose_info = true;
698 break;
699
700 case 'x':
701 param++;
702 optimizing = MAX_OPTIMIZE;
703 break;
704
705 default:
706 nasm_error(ERR_FATAL,
707 "unknown optimization option -O%c\n",
708 *param);
709 break;
710 }
711 }
712 if (optimizing > MAX_OPTIMIZE)
713 optimizing = MAX_OPTIMIZE;
714 }
715 break;
716 }
717
718 case 'p': /* pre-include */
719 case 'P':
720 preproc->pre_include(param);
721 break;
722
723 case 'd': /* pre-define */
724 case 'D':
725 preproc->pre_define(param);
726 break;
727
728 case 'u': /* un-define */
729 case 'U':
730 preproc->pre_undefine(param);
731 break;
732
733 case 'i': /* include search path */
734 case 'I':
735 preproc->include_path(param);
736 break;
737
738 case 'l': /* listing file */
739 copy_filename(listname, param);
740 break;
741
742 case 'Z': /* error messages file */
743 copy_filename(errname, param);
744 break;
745
746 case 'F': /* specify debug format */
747 ofmt->current_dfmt = dfmt_find(ofmt, param);
748 if (!ofmt->current_dfmt) {
749 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
750 "unrecognized debug format `%s' for"
751 " output format `%s'",
752 param, ofmt->shortname);
753 }
754 using_debug_info = true;
755 break;
756
757 case 'X': /* specify error reporting format */
758 if (nasm_stricmp("vc", param) == 0)
759 nasm_set_verror(nasm_verror_vc);
760 else if (nasm_stricmp("gnu", param) == 0)
761 nasm_set_verror(nasm_verror_gnu);
762 else
763 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
764 "unrecognized error reporting format `%s'",
765 param);
766 break;
767
768 case 'g':
769 using_debug_info = true;
770 break;
771
772 case 'h':
773 printf
774 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
775 "[-l listfile]\n"
776 " [options...] [--] filename\n"
777 " or nasm -v for version info\n\n"
778 " -t assemble in SciTech TASM compatible mode\n"
779 " -g generate debug information in selected format\n");
780 printf
781 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
782 " -a don't preprocess (assemble only)\n"
783 " -M generate Makefile dependencies on stdout\n"
784 " -MG d:o, missing files assumed generated\n"
785 " -MF <file> set Makefile dependency file\n"
786 " -MD <file> assemble and generate dependencies\n"
787 " -MT <file> dependency target name\n"
788 " -MQ <file> dependency target name (quoted)\n"
789 " -MP emit phony target\n\n"
790 " -Z<file> redirect error messages to file\n"
791 " -s redirect error messages to stdout\n\n"
792 " -F format select a debugging format\n\n"
793 " -o outfile write output to an outfile\n\n"
794 " -f format select an output format\n\n"
795 " -l listfile write listing to a listfile\n\n"
796 " -I<path> adds a pathname to the include file path\n");
797 printf
798 (" -O<digit> optimize branch offsets\n"
799 " -O0: No optimization\n"
800 " -O1: Minimal optimization\n"
801 " -Ox: Multipass optimization (default)\n\n"
802 " -P<file> pre-includes a file\n"
803 " -D<macro>[=<value>] pre-defines a macro\n"
804 " -U<macro> undefines a macro\n"
805 " -X<format> specifies error reporting format (gnu or vc)\n"
806 " -w+foo enables warning foo (equiv. -Wfoo)\n"
807 " -w-foo disable warning foo (equiv. -Wno-foo)\n\n"
808 " -h show invocation summary and exit\n\n"
809 "--prefix,--postfix\n"
810 " this options prepend or append the given argument to all\n"
811 " extern and global variables\n\n"
812 "Warnings:\n");
813 for (i = 0; i <= ERR_WARN_MAX; i++)
814 printf(" %-23s %s (default %s)\n",
815 warnings[i].name, warnings[i].help,
816 warnings[i].enabled ? "on" : "off");
817 printf
818 ("\nresponse files should contain command line parameters"
819 ", one per line.\n");
820 if (p[2] == 'f') {
821 printf("\nvalid output formats for -f are"
822 " (`*' denotes default):\n");
823 ofmt_list(ofmt, stdout);
824 } else {
825 printf("\nFor a list of valid output formats, use -hf.\n");
826 printf("For a list of debug formats, use -f <form> -y.\n");
827 }
828 exit(0); /* never need usage message here */
829 break;
830
831 case 'y':
832 printf("\nvalid debug formats for '%s' output format are"
833 " ('*' denotes default):\n", ofmt->shortname);
834 dfmt_list(ofmt, stdout);
835 exit(0);
836 break;
837
838 case 't':
839 tasm_compatible_mode = true;
840 break;
841
842 case 'v':
843 printf("NASM version %s compiled on %s%s\n",
844 nasm_version, nasm_date, nasm_compile_options);
845 exit(0); /* never need usage message here */
846 break;
847
848 case 'e': /* preprocess only */
849 case 'E':
850 operating_mode = op_preprocess;
851 break;
852
853 case 'a': /* assemble only - don't preprocess */
854 preproc = &preproc_nop;
855 break;
856
857 case 'W':
858 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
859 do_warn = false;
860 param += 3;
861 } else {
862 do_warn = true;
863 }
864 goto set_warning;
865
866 case 'w':
867 if (param[0] != '+' && param[0] != '-') {
868 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
869 "invalid option to `-w'");
870 break;
871 }
872 do_warn = (param[0] == '+');
873 param++;
874
875 set_warning:
876 for (i = 0; i <= ERR_WARN_MAX; i++) {
877 if (!nasm_stricmp(param, warnings[i].name))
878 break;
879 }
880 if (i <= ERR_WARN_MAX) {
881 warning_on_global[i] = do_warn;
882 } else if (!nasm_stricmp(param, "all")) {
883 for (i = 1; i <= ERR_WARN_MAX; i++)
884 warning_on_global[i] = do_warn;
885 } else if (!nasm_stricmp(param, "none")) {
886 for (i = 1; i <= ERR_WARN_MAX; i++)
887 warning_on_global[i] = !do_warn;
888 } else {
889 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
890 "invalid warning `%s'", param);
891 }
892 break;
893
894 case 'M':
895 switch (p[2]) {
896 case 0:
897 operating_mode = op_depend;
898 break;
899 case 'G':
900 operating_mode = op_depend;
901 depend_missing_ok = true;
902 break;
903 case 'P':
904 depend_emit_phony = true;
905 break;
906 case 'D':
907 depend_file = q;
908 advance = true;
909 break;
910 case 'T':
911 depend_target = q;
912 advance = true;
913 break;
914 case 'Q':
915 depend_target = quote_for_make(q);
916 advance = true;
917 break;
918 default:
919 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
920 "unknown dependency option `-M%c'", p[2]);
921 break;
922 }
923 if (advance && (!q || !q[0])) {
924 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
925 "option `-M%c' requires a parameter", p[2]);
926 break;
927 }
928 break;
929
930 case '-':
931 {
932 int s;
933
934 if (p[2] == 0) { /* -- => stop processing options */
935 stopoptions = 1;
936 break;
937 }
938 for (s = 0; textopts[s].label; s++) {
939 if (!nasm_stricmp(p + 2, textopts[s].label)) {
940 break;
941 }
942 }
943
944 switch (s) {
945
946 case OPT_PREFIX:
947 case OPT_POSTFIX:
948 {
949 if (!q) {
950 nasm_error(ERR_NONFATAL | ERR_NOFILE |
951 ERR_USAGE,
952 "option `--%s' requires an argument",
953 p + 2);
954 break;
955 } else {
956 advance = 1, param = q;
957 }
958
959 if (s == OPT_PREFIX) {
960 strncpy(lprefix, param, PREFIX_MAX - 1);
961 lprefix[PREFIX_MAX - 1] = 0;
962 break;
963 }
964 if (s == OPT_POSTFIX) {
965 strncpy(lpostfix, param, POSTFIX_MAX - 1);
966 lpostfix[POSTFIX_MAX - 1] = 0;
967 break;
968 }
969 break;
970 }
971 default:
972 {
973 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
974 "unrecognised option `--%s'", p + 2);
975 break;
976 }
977 }
978 break;
979 }
980
981 default:
982 if (!ofmt->setinfo(GI_SWITCH, &p))
983 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
984 "unrecognised option `-%c'", p[1]);
985 break;
986 }
987 } else {
988 if (*inname) {
989 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
990 "more than one input file specified");
991 } else {
992 copy_filename(inname, p);
993 }
994 }
995
996 return advance;
997 }
998
999 #define ARG_BUF_DELTA 128
1000
1001 static void process_respfile(FILE * rfile)
1002 {
1003 char *buffer, *p, *q, *prevarg;
1004 int bufsize, prevargsize;
1005
1006 bufsize = prevargsize = ARG_BUF_DELTA;
1007 buffer = nasm_malloc(ARG_BUF_DELTA);
1008 prevarg = nasm_malloc(ARG_BUF_DELTA);
1009 prevarg[0] = '\0';
1010
1011 while (1) { /* Loop to handle all lines in file */
1012 p = buffer;
1013 while (1) { /* Loop to handle long lines */
1014 q = fgets(p, bufsize - (p - buffer), rfile);
1015 if (!q)
1016 break;
1017 p += strlen(p);
1018 if (p > buffer && p[-1] == '\n')
1019 break;
1020 if (p - buffer > bufsize - 10) {
1021 int offset;
1022 offset = p - buffer;
1023 bufsize += ARG_BUF_DELTA;
1024 buffer = nasm_realloc(buffer, bufsize);
1025 p = buffer + offset;
1026 }
1027 }
1028
1029 if (!q && p == buffer) {
1030 if (prevarg[0])
1031 process_arg(prevarg, NULL);
1032 nasm_free(buffer);
1033 nasm_free(prevarg);
1034 return;
1035 }
1036
1037 /*
1038 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1039 * them are present at the end of the line.
1040 */
1041 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
1042
1043 while (p > buffer && nasm_isspace(p[-1]))
1044 *--p = '\0';
1045
1046 p = nasm_skip_spaces(buffer);
1047
1048 if (process_arg(prevarg, p))
1049 *p = '\0';
1050
1051 if ((int) strlen(p) > prevargsize - 10) {
1052 prevargsize += ARG_BUF_DELTA;
1053 prevarg = nasm_realloc(prevarg, prevargsize);
1054 }
1055 strncpy(prevarg, p, prevargsize);
1056 }
1057 }
1058
1059 /* Function to process args from a string of args, rather than the
1060 * argv array. Used by the environment variable and response file
1061 * processing.
1062 */
1063 static void process_args(char *args)
1064 {
1065 char *p, *q, *arg, *prevarg;
1066 char separator = ' ';
1067
1068 p = args;
1069 if (*p && *p != '-')
1070 separator = *p++;
1071 arg = NULL;
1072 while (*p) {
1073 q = p;
1074 while (*p && *p != separator)
1075 p++;
1076 while (*p == separator)
1077 *p++ = '\0';
1078 prevarg = arg;
1079 arg = q;
1080 if (process_arg(prevarg, arg))
1081 arg = NULL;
1082 }
1083 if (arg)
1084 process_arg(arg, NULL);
1085 }
1086
1087 static void process_response_file(const char *file)
1088 {
1089 char str[2048];
1090 FILE *f = fopen(file, "r");
1091 if (!f) {
1092 perror(file);
1093 exit(-1);
1094 }
1095 while (fgets(str, sizeof str, f)) {
1096 process_args(str);
1097 }
1098 fclose(f);
1099 }
1100
1101 static void parse_cmdline(int argc, char **argv)
1102 {
1103 FILE *rfile;
1104 char *envreal, *envcopy = NULL, *p;
1105 int i;
1106
1107 *inname = *outname = *listname = *errname = '\0';
1108
1109 for (i = 0; i <= ERR_WARN_MAX; i++)
1110 warning_on_global[i] = warnings[i].enabled;
1111
1112 /*
1113 * First, process the NASMENV environment variable.
1114 */
1115 envreal = getenv("NASMENV");
1116 if (envreal) {
1117 envcopy = nasm_strdup(envreal);
1118 process_args(envcopy);
1119 nasm_free(envcopy);
1120 }
1121
1122 /*
1123 * Now process the actual command line.
1124 */
1125 while (--argc) {
1126 bool advance;
1127 argv++;
1128 if (argv[0][0] == '@') {
1129 /*
1130 * We have a response file, so process this as a set of
1131 * arguments like the environment variable. This allows us
1132 * to have multiple arguments on a single line, which is
1133 * different to the -@resp file processing below for regular
1134 * NASM.
1135 */
1136 process_response_file(argv[0]+1);
1137 argc--;
1138 argv++;
1139 }
1140 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1141 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1142 if (p) {
1143 rfile = fopen(p, "r");
1144 if (rfile) {
1145 process_respfile(rfile);
1146 fclose(rfile);
1147 } else
1148 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1149 "unable to open response file `%s'", p);
1150 }
1151 } else
1152 advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1153 argv += advance, argc -= advance;
1154 }
1155
1156 /*
1157 * Look for basic command line typos. This definitely doesn't
1158 * catch all errors, but it might help cases of fumbled fingers.
1159 */
1160 if (!*inname)
1161 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1162 "no input file specified");
1163 else if (!strcmp(inname, errname) ||
1164 !strcmp(inname, outname) ||
1165 !strcmp(inname, listname) ||
1166 (depend_file && !strcmp(inname, depend_file)))
1167 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1168 "file `%s' is both input and output file",
1169 inname);
1170
1171 if (*errname) {
1172 error_file = fopen(errname, "w");
1173 if (!error_file) {
1174 error_file = stderr; /* Revert to default! */
1175 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1176 "cannot open file `%s' for error messages",
1177 errname);
1178 }
1179 }
1180 }
1181
1182 static enum directives getkw(char **directive, char **value);
1183
1184 static void assemble_file(char *fname, StrList **depend_ptr)
1185 {
1186 char *directive, *value, *p, *q, *special, *line;
1187 insn output_ins;
1188 int i, validid;
1189 bool rn_error;
1190 int32_t seg;
1191 int64_t offs;
1192 struct tokenval tokval;
1193 expr *e;
1194 int pass_max;
1195
1196 if (cmd_sb == 32 && iflag_ffs(&cmd_cpu) < IF_386)
1197 nasm_error(ERR_FATAL, "command line: "
1198 "32-bit segment size requires a higher cpu");
1199
1200 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1201 for (passn = 1; pass0 <= 2; passn++) {
1202 int pass1, pass2;
1203 ldfunc def_label;
1204
1205 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1206 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1207 /* pass0 0, 0, 0, ..., 1, 2 */
1208
1209 def_label = passn > 1 ? redefine_label : define_label;
1210
1211 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1212 cpu = cmd_cpu;
1213 if (pass0 == 2) {
1214 if (*listname)
1215 nasmlist.init(listname, nasm_error);
1216 }
1217 in_abs_seg = false;
1218 global_offset_changed = 0; /* set by redefine_label */
1219 location.segment = ofmt->section(NULL, pass2, &sb);
1220 globalbits = sb;
1221 if (passn > 1) {
1222 saa_rewind(forwrefs);
1223 forwref = saa_rstruct(forwrefs);
1224 raa_free(offsets);
1225 offsets = raa_init();
1226 }
1227 preproc->reset(fname, pass1, &nasmlist,
1228 pass1 == 2 ? depend_ptr : NULL);
1229 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1230
1231 globallineno = 0;
1232 if (passn == 1)
1233 location.known = true;
1234 location.offset = offs = get_curr_offs();
1235
1236 while ((line = preproc->getline())) {
1237 enum directives d;
1238 globallineno++;
1239
1240 /*
1241 * Here we parse our directives; this is not handled by the
1242 * 'real' parser. This really should be a separate function.
1243 */
1244 directive = line;
1245 d = getkw(&directive, &value);
1246 if (d) {
1247 int err = 0;
1248
1249 switch (d) {
1250 case D_SEGMENT: /* [SEGMENT n] */
1251 case D_SECTION:
1252 seg = ofmt->section(value, pass2, &sb);
1253 if (seg == NO_SEG) {
1254 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1255 "segment name `%s' not recognized",
1256 value);
1257 } else {
1258 in_abs_seg = false;
1259 location.segment = seg;
1260 }
1261 break;
1262 case D_SECTALIGN: /* [SECTALIGN n] */
1263 if (*value) {
1264 stdscan_reset();
1265 stdscan_set(value);
1266 tokval.t_type = TOKEN_INVALID;
1267 e = evaluate(stdscan, NULL, &tokval, NULL, pass2, nasm_error, NULL);
1268 if (e) {
1269 unsigned int align = (unsigned int)e->value;
1270 if ((uint64_t)e->value > 0x7fffffff) {
1271 /*
1272 * FIXME: Please make some sane message here
1273 * ofmt should have some 'check' method which
1274 * would report segment alignment bounds.
1275 */
1276 nasm_error(ERR_FATAL,
1277 "incorrect segment alignment `%s'", value);
1278 } else if (!is_power2(align)) {
1279 nasm_error(ERR_NONFATAL,
1280 "segment alignment `%s' is not power of two",
1281 value);
1282 }
1283 /* callee should be able to handle all details */
1284 ofmt->sectalign(location.segment, align);
1285 }
1286 }
1287 break;
1288 case D_EXTERN: /* [EXTERN label:special] */
1289 if (*value == '$')
1290 value++; /* skip initial $ if present */
1291 if (pass0 == 2) {
1292 q = value;
1293 while (*q && *q != ':')
1294 q++;
1295 if (*q == ':') {
1296 *q++ = '\0';
1297 ofmt->symdef(value, 0L, 0L, 3, q);
1298 }
1299 } else if (passn == 1) {
1300 q = value;
1301 validid = true;
1302 if (!isidstart(*q))
1303 validid = false;
1304 while (*q && *q != ':') {
1305 if (!isidchar(*q))
1306 validid = false;
1307 q++;
1308 }
1309 if (!validid) {
1310 nasm_error(ERR_NONFATAL,
1311 "identifier expected after EXTERN");
1312 break;
1313 }
1314 if (*q == ':') {
1315 *q++ = '\0';
1316 special = q;
1317 } else
1318 special = NULL;
1319 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1320 int temp = pass0;
1321 pass0 = 1; /* fake pass 1 in labels.c */
1322 declare_as_global(value, special);
1323 define_label(value, seg_alloc(), 0L, NULL,
1324 false, true);
1325 pass0 = temp;
1326 }
1327 } /* else pass0 == 1 */
1328 break;
1329 case D_BITS: /* [BITS bits] */
1330 globalbits = sb = get_bits(value);
1331 break;
1332 case D_GLOBAL: /* [GLOBAL symbol:special] */
1333 if (*value == '$')
1334 value++; /* skip initial $ if present */
1335 if (pass0 == 2) { /* pass 2 */
1336 q = value;
1337 while (*q && *q != ':')
1338 q++;
1339 if (*q == ':') {
1340 *q++ = '\0';
1341 ofmt->symdef(value, 0L, 0L, 3, q);
1342 }
1343 } else if (pass2 == 1) { /* pass == 1 */
1344 q = value;
1345 validid = true;
1346 if (!isidstart(*q))
1347 validid = false;
1348 while (*q && *q != ':') {
1349 if (!isidchar(*q))
1350 validid = false;
1351 q++;
1352 }
1353 if (!validid) {
1354 nasm_error(ERR_NONFATAL,
1355 "identifier expected after GLOBAL");
1356 break;
1357 }
1358 if (*q == ':') {
1359 *q++ = '\0';
1360 special = q;
1361 } else
1362 special = NULL;
1363 declare_as_global(value, special);
1364 } /* pass == 1 */
1365 break;
1366 case D_COMMON: /* [COMMON symbol size:special] */
1367 {
1368 int64_t size;
1369
1370 if (*value == '$')
1371 value++; /* skip initial $ if present */
1372 p = value;
1373 validid = true;
1374 if (!isidstart(*p))
1375 validid = false;
1376 while (*p && !nasm_isspace(*p)) {
1377 if (!isidchar(*p))
1378 validid = false;
1379 p++;
1380 }
1381 if (!validid) {
1382 nasm_error(ERR_NONFATAL,
1383 "identifier expected after COMMON");
1384 break;
1385 }
1386 if (*p) {
1387 p = nasm_zap_spaces_fwd(p);
1388 q = p;
1389 while (*q && *q != ':')
1390 q++;
1391 if (*q == ':') {
1392 *q++ = '\0';
1393 special = q;
1394 } else {
1395 special = NULL;
1396 }
1397 size = readnum(p, &rn_error);
1398 if (rn_error) {
1399 nasm_error(ERR_NONFATAL,
1400 "invalid size specified"
1401 " in COMMON declaration");
1402 break;
1403 }
1404 } else {
1405 nasm_error(ERR_NONFATAL,
1406 "no size specified in"
1407 " COMMON declaration");
1408 break;
1409 }
1410
1411 if (pass0 < 2) {
1412 define_common(value, seg_alloc(), size, special);
1413 } else if (pass0 == 2) {
1414 if (special)
1415 ofmt->symdef(value, 0L, 0L, 3, special);
1416 }
1417 break;
1418 }
1419 case D_ABSOLUTE: /* [ABSOLUTE address] */
1420 stdscan_reset();
1421 stdscan_set(value);
1422 tokval.t_type = TOKEN_INVALID;
1423 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1424 nasm_error, NULL);
1425 if (e) {
1426 if (!is_reloc(e))
1427 nasm_error(pass0 ==
1428 1 ? ERR_NONFATAL : ERR_PANIC,
1429 "cannot use non-relocatable expression as "
1430 "ABSOLUTE address");
1431 else {
1432 abs_seg = reloc_seg(e);
1433 abs_offset = reloc_value(e);
1434 }
1435 } else if (passn == 1)
1436 abs_offset = 0x100; /* don't go near zero in case of / */
1437 else
1438 nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
1439 "in pass two");
1440 in_abs_seg = true;
1441 location.segment = NO_SEG;
1442 break;
1443 case D_DEBUG: /* [DEBUG] */
1444 {
1445 char debugid[128];
1446 bool badid, overlong;
1447
1448 p = value;
1449 q = debugid;
1450 badid = overlong = false;
1451 if (!isidstart(*p)) {
1452 badid = true;
1453 } else {
1454 while (*p && !nasm_isspace(*p)) {
1455 if (q >= debugid + sizeof debugid - 1) {
1456 overlong = true;
1457 break;
1458 }
1459 if (!isidchar(*p))
1460 badid = true;
1461 *q++ = *p++;
1462 }
1463 *q = 0;
1464 }
1465 if (badid) {
1466 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1467 "identifier expected after DEBUG");
1468 break;
1469 }
1470 if (overlong) {
1471 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1472 "DEBUG identifier too long");
1473 break;
1474 }
1475 p = nasm_skip_spaces(p);
1476 if (pass0 == 2)
1477 dfmt->debug_directive(debugid, p);
1478 break;
1479 }
1480 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1481 value = nasm_skip_spaces(value);
1482 switch(*value) {
1483 case '-': validid = 0; value++; break;
1484 case '+': validid = 1; value++; break;
1485 case '*': validid = 2; value++; break;
1486 default: validid = 1; break;
1487 }
1488
1489 for (i = 1; i <= ERR_WARN_MAX; i++)
1490 if (!nasm_stricmp(value, warnings[i].name))
1491 break;
1492 if (i <= ERR_WARN_MAX) {
1493 switch(validid) {
1494 case 0:
1495 warning_on[i] = false;
1496 break;
1497 case 1:
1498 warning_on[i] = true;
1499 break;
1500 case 2:
1501 warning_on[i] = warning_on_global[i];
1502 break;
1503 }
1504 } else
1505 nasm_error(ERR_NONFATAL,
1506 "invalid warning id in WARNING directive");
1507 break;
1508 case D_CPU: /* [CPU] */
1509 cpu = get_cpu(value);
1510 break;
1511 case D_LIST: /* [LIST {+|-}] */
1512 value = nasm_skip_spaces(value);
1513 if (*value == '+') {
1514 user_nolist = 0;
1515 } else {
1516 if (*value == '-') {
1517 user_nolist = 1;
1518 } else {
1519 err = 1;
1520 }
1521 }
1522 break;
1523 case D_DEFAULT: /* [DEFAULT] */
1524 stdscan_reset();
1525 stdscan_set(value);
1526 tokval.t_type = TOKEN_INVALID;
1527 if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1528 switch ((int)tokval.t_integer) {
1529 case S_REL:
1530 globalrel = 1;
1531 break;
1532 case S_ABS:
1533 globalrel = 0;
1534 break;
1535 default:
1536 err = 1;
1537 break;
1538 }
1539 } else {
1540 err = 1;
1541 }
1542 break;
1543 case D_FLOAT:
1544 if (float_option(value)) {
1545 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1546 "unknown 'float' directive: %s",
1547 value);
1548 }
1549 break;
1550 default:
1551 if (ofmt->directive(d, value, pass2))
1552 break;
1553 /* else fall through */
1554 case D_unknown:
1555 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1556 "unrecognised directive [%s]",
1557 directive);
1558 break;
1559 }
1560 if (err) {
1561 nasm_error(ERR_NONFATAL,
1562 "invalid parameter to [%s] directive",
1563 directive);
1564 }
1565 } else { /* it isn't a directive */
1566 parse_line(pass1, line, &output_ins, def_label);
1567
1568 if (optimizing > 0) {
1569 if (forwref != NULL && globallineno == forwref->lineno) {
1570 output_ins.forw_ref = true;
1571 do {
1572 output_ins.oprs[forwref->operand].opflags |= OPFLAG_FORWARD;
1573 forwref = saa_rstruct(forwrefs);
1574 } while (forwref != NULL
1575 && forwref->lineno == globallineno);
1576 } else
1577 output_ins.forw_ref = false;
1578
1579 if (output_ins.forw_ref) {
1580 if (passn == 1) {
1581 for (i = 0; i < output_ins.operands; i++) {
1582 if (output_ins.oprs[i].opflags & OPFLAG_FORWARD) {
1583 struct forwrefinfo *fwinf = (struct forwrefinfo *)saa_wstruct(forwrefs);
1584 fwinf->lineno = globallineno;
1585 fwinf->operand = i;
1586 }
1587 }
1588 }
1589 }
1590 }
1591
1592 /* forw_ref */
1593 if (output_ins.opcode == I_EQU) {
1594 if (pass1 == 1) {
1595 /*
1596 * Special `..' EQUs get processed in pass two,
1597 * except `..@' macro-processor EQUs which are done
1598 * in the normal place.
1599 */
1600 if (!output_ins.label)
1601 nasm_error(ERR_NONFATAL,
1602 "EQU not preceded by label");
1603
1604 else if (output_ins.label[0] != '.' ||
1605 output_ins.label[1] != '.' ||
1606 output_ins.label[2] == '@') {
1607 if (output_ins.operands == 1 &&
1608 (output_ins.oprs[0].type & IMMEDIATE) &&
1609 output_ins.oprs[0].wrt == NO_SEG) {
1610 bool isext = !!(output_ins.oprs[0].opflags & OPFLAG_EXTERN);
1611 def_label(output_ins.label,
1612 output_ins.oprs[0].segment,
1613 output_ins.oprs[0].offset, NULL,
1614 false, isext);
1615 } else if (output_ins.operands == 2
1616 && (output_ins.oprs[0].type & IMMEDIATE)
1617 && (output_ins.oprs[0].type & COLON)
1618 && output_ins.oprs[0].segment == NO_SEG
1619 && output_ins.oprs[0].wrt == NO_SEG
1620 && (output_ins.oprs[1].type & IMMEDIATE)
1621 && output_ins.oprs[1].segment == NO_SEG
1622 && output_ins.oprs[1].wrt == NO_SEG) {
1623 def_label(output_ins.label,
1624 output_ins.oprs[0].offset | SEG_ABS,
1625 output_ins.oprs[1].offset,
1626 NULL, false, false);
1627 } else
1628 nasm_error(ERR_NONFATAL,
1629 "bad syntax for EQU");
1630 }
1631 } else {
1632 /*
1633 * Special `..' EQUs get processed here, except
1634 * `..@' macro processor EQUs which are done above.
1635 */
1636 if (output_ins.label[0] == '.' &&
1637 output_ins.label[1] == '.' &&
1638 output_ins.label[2] != '@') {
1639 if (output_ins.operands == 1 &&
1640 (output_ins.oprs[0].type & IMMEDIATE)) {
1641 define_label(output_ins.label,
1642 output_ins.oprs[0].segment,
1643 output_ins.oprs[0].offset,
1644 NULL, false, false);
1645 } else if (output_ins.operands == 2
1646 && (output_ins.oprs[0].type & IMMEDIATE)
1647 && (output_ins.oprs[0].type & COLON)
1648 && output_ins.oprs[0].segment == NO_SEG
1649 && (output_ins.oprs[1].type & IMMEDIATE)
1650 && output_ins.oprs[1].segment == NO_SEG) {
1651 define_label(output_ins.label,
1652 output_ins.oprs[0].offset | SEG_ABS,
1653 output_ins.oprs[1].offset,
1654 NULL, false, false);
1655 } else
1656 nasm_error(ERR_NONFATAL,
1657 "bad syntax for EQU");
1658 }
1659 }
1660 } else { /* instruction isn't an EQU */
1661
1662 if (pass1 == 1) {
1663
1664 int64_t l = insn_size(location.segment, offs, sb, cpu,
1665 &output_ins, nasm_error);
1666
1667 /* if (using_debug_info) && output_ins.opcode != -1) */
1668 if (using_debug_info)
1669 { /* fbk 03/25/01 */
1670 /* this is done here so we can do debug type info */
1671 int32_t typeinfo =
1672 TYS_ELEMENTS(output_ins.operands);
1673 switch (output_ins.opcode) {
1674 case I_RESB:
1675 typeinfo =
1676 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_BYTE;
1677 break;
1678 case I_RESW:
1679 typeinfo =
1680 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_WORD;
1681 break;
1682 case I_RESD:
1683 typeinfo =
1684 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_DWORD;
1685 break;
1686 case I_RESQ:
1687 typeinfo =
1688 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_QWORD;
1689 break;
1690 case I_REST:
1691 typeinfo =
1692 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_TBYTE;
1693 break;
1694 case I_RESO:
1695 typeinfo =
1696 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_OWORD;
1697 break;
1698 case I_RESY:
1699 typeinfo =
1700 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_YWORD;
1701 break;
1702 case I_DB:
1703 typeinfo |= TY_BYTE;
1704 break;
1705 case I_DW:
1706 typeinfo |= TY_WORD;
1707 break;
1708 case I_DD:
1709 if (output_ins.eops_float)
1710 typeinfo |= TY_FLOAT;
1711 else
1712 typeinfo |= TY_DWORD;
1713 break;
1714 case I_DQ:
1715 typeinfo |= TY_QWORD;
1716 break;
1717 case I_DT:
1718 typeinfo |= TY_TBYTE;
1719 break;
1720 case I_DO:
1721 typeinfo |= TY_OWORD;
1722 break;
1723 case I_DY:
1724 typeinfo |= TY_YWORD;
1725 break;
1726 default:
1727 typeinfo = TY_LABEL;
1728
1729 }
1730
1731 dfmt->debug_typevalue(typeinfo);
1732 }
1733 if (l != -1) {
1734 offs += l;
1735 set_curr_offs(offs);
1736 }
1737 /*
1738 * else l == -1 => invalid instruction, which will be
1739 * flagged as an error on pass 2
1740 */
1741
1742 } else {
1743 offs += assemble(location.segment, offs, sb, cpu,
1744 &output_ins, ofmt, nasm_error,
1745 &nasmlist);
1746 set_curr_offs(offs);
1747
1748 }
1749 } /* not an EQU */
1750 cleanup_insn(&output_ins);
1751 }
1752 nasm_free(line);
1753 location.offset = offs = get_curr_offs();
1754 } /* end while (line = preproc->getline... */
1755
1756 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1757 nasm_error(ERR_NONFATAL,
1758 "phase error detected at end of assembly.");
1759
1760 if (pass1 == 1)
1761 preproc->cleanup(1);
1762
1763 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1764 pass0++;
1765 } else if (global_offset_changed &&
1766 global_offset_changed < prev_offset_changed) {
1767 prev_offset_changed = global_offset_changed;
1768 stall_count = 0;
1769 } else {
1770 stall_count++;
1771 }
1772
1773 if (terminate_after_phase)
1774 break;
1775
1776 if ((stall_count > 997) || (passn >= pass_max)) {
1777 /* We get here if the labels don't converge
1778 * Example: FOO equ FOO + 1
1779 */
1780 nasm_error(ERR_NONFATAL,
1781 "Can't find valid values for all labels "
1782 "after %d passes, giving up.", passn);
1783 nasm_error(ERR_NONFATAL,
1784 "Possible causes: recursive EQUs, macro abuse.");
1785 break;
1786 }
1787 }
1788
1789 preproc->cleanup(0);
1790 nasmlist.cleanup();
1791 if (!terminate_after_phase && opt_verbose_info) {
1792 /* -On and -Ov switches */
1793 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1794 }
1795 }
1796
1797 static enum directives getkw(char **directive, char **value)
1798 {
1799 char *p, *q, *buf;
1800
1801 buf = nasm_skip_spaces(*directive);
1802
1803 /* it should be enclosed in [ ] */
1804 if (*buf != '[')
1805 return D_none;
1806 q = strchr(buf, ']');
1807 if (!q)
1808 return D_none;
1809
1810 /* stip off the comments */
1811 p = strchr(buf, ';');
1812 if (p) {
1813 if (p < q) /* ouch! somwhere inside */
1814 return D_none;
1815 *p = '\0';
1816 }
1817
1818 /* no brace, no trailing spaces */
1819 *q = '\0';
1820 nasm_zap_spaces_rev(--q);
1821
1822 /* directive */
1823 p = nasm_skip_spaces(++buf);
1824 q = nasm_skip_word(p);
1825 if (!q)
1826 return D_none; /* sigh... no value there */
1827 *q = '\0';
1828 *directive = p;
1829
1830 /* and value finally */
1831 p = nasm_skip_spaces(++q);
1832 *value = p;
1833
1834 return find_directive(*directive);
1835 }
1836
1837 /**
1838 * gnu style error reporting
1839 * This function prints an error message to error_file in the
1840 * style used by GNU. An example would be:
1841 * file.asm:50: error: blah blah blah
1842 * where file.asm is the name of the file, 50 is the line number on
1843 * which the error occurs (or is detected) and "error:" is one of
1844 * the possible optional diagnostics -- it can be "error" or "warning"
1845 * or something else. Finally the line terminates with the actual
1846 * error message.
1847 *
1848 * @param severity the severity of the warning or error
1849 * @param fmt the printf style format string
1850 */
1851 static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
1852 {
1853 char *currentfile = NULL;
1854 int32_t lineno = 0;
1855
1856 if (is_suppressed_warning(severity))
1857 return;
1858
1859 if (!(severity & ERR_NOFILE))
1860 src_get(&lineno, &currentfile);
1861
1862 if (currentfile) {
1863 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1864 nasm_free(currentfile);
1865 } else {
1866 fputs("nasm: ", error_file);
1867 }
1868
1869 nasm_verror_common(severity, fmt, ap);
1870 }
1871
1872 /**
1873 * MS style error reporting
1874 * This function prints an error message to error_file in the
1875 * style used by Visual C and some other Microsoft tools. An example
1876 * would be:
1877 * file.asm(50) : error: blah blah blah
1878 * where file.asm is the name of the file, 50 is the line number on
1879 * which the error occurs (or is detected) and "error:" is one of
1880 * the possible optional diagnostics -- it can be "error" or "warning"
1881 * or something else. Finally the line terminates with the actual
1882 * error message.
1883 *
1884 * @param severity the severity of the warning or error
1885 * @param fmt the printf style format string
1886 */
1887 static void nasm_verror_vc(int severity, const char *fmt, va_list ap)
1888 {
1889 char *currentfile = NULL;
1890 int32_t lineno = 0;
1891
1892 if (is_suppressed_warning(severity))
1893 return;
1894
1895 if (!(severity & ERR_NOFILE))
1896 src_get(&lineno, &currentfile);
1897
1898 if (currentfile) {
1899 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1900 nasm_free(currentfile);
1901 } else {
1902 fputs("nasm: ", error_file);
1903 }
1904
1905 nasm_verror_common(severity, fmt, ap);
1906 }
1907
1908 /**
1909 * check for supressed warning
1910 * checks for suppressed warning or pass one only warning and we're
1911 * not in pass 1
1912 *
1913 * @param severity the severity of the warning or error
1914 * @return true if we should abort error/warning printing
1915 */
1916 static bool is_suppressed_warning(int severity)
1917 {
1918 /* Not a warning at all */
1919 if ((severity & ERR_MASK) != ERR_WARNING)
1920 return false;
1921
1922 /* See if it's a pass-one only warning and we're not in pass one. */
1923 if (((severity & ERR_PASS1) && pass0 != 1) ||
1924 ((severity & ERR_PASS2) && pass0 != 2))
1925 return true;
1926
1927 /* Might be a warning but suppresed explicitly */
1928 if (severity & ERR_WARN_MASK)
1929 return !warning_on[WARN_IDX(severity)];
1930 else
1931 return false;
1932 }
1933
1934 /**
1935 * common error reporting
1936 * This is the common back end of the error reporting schemes currently
1937 * implemented. It prints the nature of the warning and then the
1938 * specific error message to error_file and may or may not return. It
1939 * doesn't return if the error severity is a "panic" or "debug" type.
1940 *
1941 * @param severity the severity of the warning or error
1942 * @param fmt the printf style format string
1943 */
1944 static void nasm_verror_common(int severity, const char *fmt, va_list args)
1945 {
1946 char msg[1024];
1947 const char *pfx;
1948
1949 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1950 case ERR_WARNING:
1951 pfx = "warning: ";
1952 break;
1953 case ERR_NONFATAL:
1954 pfx = "error: ";
1955 break;
1956 case ERR_FATAL:
1957 pfx = "fatal: ";
1958 break;
1959 case ERR_PANIC:
1960 pfx = "panic: ";
1961 break;
1962 case ERR_DEBUG:
1963 pfx = "debug: ";
1964 break;
1965 default:
1966 pfx = "";
1967 break;
1968 }
1969
1970 vsnprintf(msg, sizeof msg, fmt, args);
1971
1972 fprintf(error_file, "%s%s\n", pfx, msg);
1973
1974 if (*listname)
1975 nasmlist.error(severity, pfx, msg);
1976
1977 if (severity & ERR_USAGE)
1978 want_usage = true;
1979
1980 switch (severity & ERR_MASK) {
1981 case ERR_DEBUG:
1982 /* no further action, by definition */
1983 break;
1984 case ERR_WARNING:
1985 /* Treat warnings as errors */
1986 if (warning_on[WARN_IDX(ERR_WARN_TERM)])
1987 terminate_after_phase = true;
1988 break;
1989 case ERR_NONFATAL:
1990 terminate_after_phase = true;
1991 break;
1992 case ERR_FATAL:
1993 if (ofile) {
1994 fclose(ofile);
1995 remove(outname);
1996 ofile = NULL;
1997 }
1998 if (want_usage)
1999 usage();
2000 exit(1); /* instantly die */
2001 break; /* placate silly compilers */
2002 case ERR_PANIC:
2003 fflush(NULL);
2004 /* abort(); */ /* halt, catch fire, and dump core */
2005 exit(3);
2006 break;
2007 }
2008 }
2009
2010 static void usage(void)
2011 {
2012 fputs("type `nasm -h' for help\n", error_file);
2013 }
2014
2015 static iflag_t get_cpu(char *value)
2016 {
2017 iflag_t r;
2018
2019 iflag_clear_all(&r);
2020
2021 if (!strcmp(value, "8086"))
2022 iflag_set(&r, IF_8086);
2023 else if (!strcmp(value, "186"))
2024 iflag_set(&r, IF_186);
2025 else if (!strcmp(value, "286"))
2026 iflag_set(&r, IF_286);
2027 else if (!strcmp(value, "386"))
2028 iflag_set(&r, IF_386);
2029 else if (!strcmp(value, "486"))
2030 iflag_set(&r, IF_486);
2031 else if (!strcmp(value, "586") ||
2032 !nasm_stricmp(value, "pentium"))
2033 iflag_set(&r, IF_PENT);
2034 else if (!strcmp(value, "686") ||
2035 !nasm_stricmp(value, "ppro") ||
2036 !nasm_stricmp(value, "pentiumpro") ||
2037 !nasm_stricmp(value, "p2"))
2038 iflag_set(&r, IF_P6);
2039 else if (!nasm_stricmp(value, "p3") ||
2040 !nasm_stricmp(value, "katmai"))
2041 iflag_set(&r, IF_KATMAI);
2042 else if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2043 !nasm_stricmp(value, "willamette"))
2044 iflag_set(&r, IF_WILLAMETTE);
2045 else if (!nasm_stricmp(value, "prescott"))
2046 iflag_set(&r, IF_PRESCOTT);
2047 else if (!nasm_stricmp(value, "x64") ||
2048 !nasm_stricmp(value, "x86-64"))
2049 iflag_set(&r, IF_X86_64);
2050 else if (!nasm_stricmp(value, "ia64") ||
2051 !nasm_stricmp(value, "ia-64") ||
2052 !nasm_stricmp(value, "itanium")||
2053 !nasm_stricmp(value, "itanic") ||
2054 !nasm_stricmp(value, "merced"))
2055 iflag_set(&r, IF_IA64);
2056 else {
2057 iflag_set(&r, IF_PLEVEL);
2058 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2059 "unknown 'cpu' type");
2060 }
2061 return r;
2062 }
2063
2064 static int get_bits(char *value)
2065 {
2066 int i;
2067
2068 if ((i = atoi(value)) == 16)
2069 return i; /* set for a 16-bit segment */
2070 else if (i == 32) {
2071 if (iflag_ffs(&cpu) < IF_386) {
2072 nasm_error(ERR_NONFATAL,
2073 "cannot specify 32-bit segment on processor below a 386");
2074 i = 16;
2075 }
2076 } else if (i == 64) {
2077 if (iflag_ffs(&cpu) < IF_X86_64) {
2078 nasm_error(ERR_NONFATAL,
2079 "cannot specify 64-bit segment on processor below an x86-64");
2080 i = 16;
2081 }
2082 if (i != maxbits) {
2083 nasm_error(ERR_NONFATAL,
2084 "%s output format does not support 64-bit code",
2085 ofmt->shortname);
2086 i = 16;
2087 }
2088 } else {
2089 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2090 "`%s' is not a valid segment size; must be 16, 32 or 64",
2091 value);
2092 i = 16;
2093 }
2094 return i;
2095 }
The Netwide Assembler