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coff: Better handling of section redefinition
[nasm.git] / nasm.c
blob126f2712fc08c26062978ebce45a73f211dcdcdc
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
64 /*
65 * This is the maximum number of optimization passes to do. If we ever
66 * find a case where the optimizer doesn't naturally converge, we might
67 * have to drop this value so the assembler doesn't appear to just hang.
68 */
69 #define MAX_OPTIMIZE (INT_MAX >> 1)
70
71 struct forwrefinfo { /* info held on forward refs. */
72 int lineno;
73 int operand;
74 };
75
76 static int get_bits(char *value);
77 static uint32_t get_cpu(char *cpu_str);
78 static void parse_cmdline(int, char **);
79 static void assemble_file(char *, StrList **);
80 static void nasm_verror_gnu(int severity, const char *fmt, va_list args);
81 static void nasm_verror_vc(int severity, const char *fmt, va_list args);
82 static void nasm_verror_common(int severity, const char *fmt, va_list args);
83 static bool is_suppressed_warning(int severity);
84 static void usage(void);
85
86 static int using_debug_info, opt_verbose_info;
87 bool tasm_compatible_mode = false;
88 int pass0, passn;
89 int maxbits = 0;
90 int globalrel = 0;
91
92 static time_t official_compile_time;
93
94 static char inname[FILENAME_MAX];
95 static char outname[FILENAME_MAX];
96 static char listname[FILENAME_MAX];
97 static char errname[FILENAME_MAX];
98 static int globallineno; /* for forward-reference tracking */
99 /* static int pass = 0; */
100 struct ofmt *ofmt = &OF_DEFAULT;
101 struct ofmt_alias *ofmt_alias = NULL;
102 const struct dfmt *dfmt;
103
104 static FILE *error_file; /* Where to write error messages */
105
106 FILE *ofile = NULL;
107 int optimizing = MAX_OPTIMIZE; /* number of optimization passes to take */
108 static int sb, cmd_sb = 16; /* by default */
109 static uint32_t cmd_cpu = IF_PLEVEL; /* highest level by default */
110 static uint32_t cpu = IF_PLEVEL; /* passed to insn_size & assemble.c */
111 int64_t global_offset_changed; /* referenced in labels.c */
112 int64_t prev_offset_changed;
113 int32_t stall_count;
114
115 static struct location location;
116 int in_abs_seg; /* Flag we are in ABSOLUTE seg */
117 int32_t abs_seg; /* ABSOLUTE segment basis */
118 int32_t abs_offset; /* ABSOLUTE offset */
119
120 static struct RAA *offsets;
121
122 static struct SAA *forwrefs; /* keep track of forward references */
123 static const struct forwrefinfo *forwref;
124
125 static struct preproc_ops *preproc;
126
127 enum op_type {
128 op_normal, /* Preprocess and assemble */
129 op_preprocess, /* Preprocess only */
130 op_depend, /* Generate dependencies */
131 };
132 static enum op_type operating_mode;
133 /* Dependency flags */
134 static bool depend_emit_phony = false;
135 static bool depend_missing_ok = false;
136 static const char *depend_target = NULL;
137 static const char *depend_file = NULL;
138
139 /*
140 * Which of the suppressible warnings are suppressed. Entry zero
141 * isn't an actual warning, but it used for -w+error/-Werror.
142 */
143
144 static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
145 static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
146
147 static const struct warning {
148 const char *name;
149 const char *help;
150 bool enabled;
151 } warnings[ERR_WARN_MAX+1] = {
152 {"error", "treat warnings as errors", false},
153 {"macro-params", "macro calls with wrong parameter count", true},
154 {"macro-selfref", "cyclic macro references", false},
155 {"macro-defaults", "macros with more default than optional parameters", true},
156 {"orphan-labels", "labels alone on lines without trailing `:'", true},
157 {"number-overflow", "numeric constant does not fit", true},
158 {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
159 {"float-overflow", "floating point overflow", true},
160 {"float-denorm", "floating point denormal", false},
161 {"float-underflow", "floating point underflow", false},
162 {"float-toolong", "too many digits in floating-point number", true},
163 {"user", "%warning directives", true},
164 {"lock", "lock prefix on unlockable instructions", true},
165 {"hle", "invalid hle prefixes", true},
166 };
167
168 static bool want_usage;
169 static bool terminate_after_phase;
170 int user_nolist = 0; /* fbk 9/2/00 */
171
172 static char *quote_for_make(const char *str);
173
174 static int64_t get_curr_offs(void)
175 {
176 return in_abs_seg ? abs_offset : raa_read(offsets, location.segment);
177 }
178
179 static void set_curr_offs(int64_t l_off)
180 {
181 if (in_abs_seg)
182 abs_offset = l_off;
183 else
184 offsets = raa_write(offsets, location.segment, l_off);
185 }
186
187 static void nasm_fputs(const char *line, FILE * outfile)
188 {
189 if (outfile) {
190 fputs(line, outfile);
191 putc('\n', outfile);
192 } else
193 puts(line);
194 }
195
196 /* Convert a struct tm to a POSIX-style time constant */
197 static int64_t posix_mktime(struct tm *tm)
198 {
199 int64_t t;
200 int64_t y = tm->tm_year;
201
202 /* See IEEE 1003.1:2004, section 4.14 */
203
204 t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
205 t += tm->tm_yday;
206 t *= 24;
207 t += tm->tm_hour;
208 t *= 60;
209 t += tm->tm_min;
210 t *= 60;
211 t += tm->tm_sec;
212
213 return t;
214 }
215
216 static void define_macros_early(void)
217 {
218 char temp[128];
219 struct tm lt, *lt_p, gm, *gm_p;
220 int64_t posix_time;
221
222 lt_p = localtime(&official_compile_time);
223 if (lt_p) {
224 lt = *lt_p;
225
226 strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", &lt);
227 preproc->pre_define(temp);
228 strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", &lt);
229 preproc->pre_define(temp);
230 strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", &lt);
231 preproc->pre_define(temp);
232 strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", &lt);
233 preproc->pre_define(temp);
234 }
235
236 gm_p = gmtime(&official_compile_time);
237 if (gm_p) {
238 gm = *gm_p;
239
240 strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
241 preproc->pre_define(temp);
242 strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
243 preproc->pre_define(temp);
244 strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
245 preproc->pre_define(temp);
246 strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
247 preproc->pre_define(temp);
248 }
249
250 if (gm_p)
251 posix_time = posix_mktime(&gm);
252 else if (lt_p)
253 posix_time = posix_mktime(&lt);
254 else
255 posix_time = 0;
256
257 if (posix_time) {
258 snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
259 preproc->pre_define(temp);
260 }
261 }
262
263 static void define_macros_late(void)
264 {
265 char temp[128];
266
267 /*
268 * In case if output format is defined by alias
269 * we have to put shortname of the alias itself here
270 * otherwise ABI backward compatibility gets broken.
271 */
272 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s",
273 ofmt_alias ? ofmt_alias->shortname : ofmt->shortname);
274 preproc->pre_define(temp);
275 }
276
277 static void emit_dependencies(StrList *list)
278 {
279 FILE *deps;
280 int linepos, len;
281 StrList *l, *nl;
282
283 if (depend_file && strcmp(depend_file, "-")) {
284 deps = fopen(depend_file, "w");
285 if (!deps) {
286 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
287 "unable to write dependency file `%s'", depend_file);
288 return;
289 }
290 } else {
291 deps = stdout;
292 }
293
294 linepos = fprintf(deps, "%s:", depend_target);
295 list_for_each(l, list) {
296 char *file = quote_for_make(l->str);
297 len = strlen(file);
298 if (linepos + len > 62 && linepos > 1) {
299 fprintf(deps, " \\\n ");
300 linepos = 1;
301 }
302 fprintf(deps, " %s", file);
303 linepos += len+1;
304 nasm_free(file);
305 }
306 fprintf(deps, "\n\n");
307
308 list_for_each_safe(l, nl, list) {
309 if (depend_emit_phony)
310 fprintf(deps, "%s:\n\n", l->str);
311 nasm_free(l);
312 }
313
314 if (deps != stdout)
315 fclose(deps);
316 }
317
318 int main(int argc, char **argv)
319 {
320 StrList *depend_list = NULL, **depend_ptr;
321
322 time(&official_compile_time);
323
324 pass0 = 0;
325 want_usage = terminate_after_phase = false;
326 nasm_set_verror(nasm_verror_gnu);
327
328 error_file = stderr;
329
330 tolower_init();
331
332 nasm_init_malloc_error();
333 offsets = raa_init();
334 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
335
336 preproc = &nasmpp;
337 operating_mode = op_normal;
338
339 seg_init();
340
341 /* Define some macros dependent on the runtime, but not
342 on the command line. */
343 define_macros_early();
344
345 parse_cmdline(argc, argv);
346
347 if (terminate_after_phase) {
348 if (want_usage)
349 usage();
350 return 1;
351 }
352
353 /* If debugging info is disabled, suppress any debug calls */
354 if (!using_debug_info)
355 ofmt->current_dfmt = &null_debug_form;
356
357 if (ofmt->stdmac)
358 preproc->extra_stdmac(ofmt->stdmac);
359 parser_global_info(&location);
360 eval_global_info(ofmt, lookup_label, &location);
361
362 /* define some macros dependent of command-line */
363 define_macros_late();
364
365 depend_ptr = (depend_file || (operating_mode == op_depend)) ? &depend_list : NULL;
366 if (!depend_target)
367 depend_target = quote_for_make(outname);
368
369 switch (operating_mode) {
370 case op_depend:
371 {
372 char *line;
373
374 if (depend_missing_ok)
375 preproc->include_path(NULL); /* "assume generated" */
376
377 preproc->reset(inname, 0, &nasmlist, depend_ptr);
378 if (outname[0] == '\0')
379 ofmt->filename(inname, outname);
380 ofile = NULL;
381 while ((line = preproc->getline()))
382 nasm_free(line);
383 preproc->cleanup(0);
384 }
385 break;
386
387 case op_preprocess:
388 {
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, &nasmlist, depend_ptr);
407 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
408
409 while ((line = preproc->getline())) {
410 /*
411 * We generate %line directives if needed for later programs
412 */
413 int32_t linnum = prior_linnum += lineinc;
414 int altline = src_get(&linnum, &file_name);
415 if (altline) {
416 if (altline == 1 && lineinc == 1)
417 nasm_fputs("", ofile);
418 else {
419 lineinc = (altline != -1 || lineinc != 1);
420 fprintf(ofile ? ofile : stdout,
421 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
422 file_name);
423 }
424 prior_linnum = linnum;
425 }
426 nasm_fputs(line, ofile);
427 nasm_free(line);
428 }
429 nasm_free(file_name);
430 preproc->cleanup(0);
431 if (ofile)
432 fclose(ofile);
433 if (ofile && terminate_after_phase)
434 remove(outname);
435 ofile = NULL;
436 }
437 break;
438
439 case op_normal:
440 {
441 /*
442 * We must call ofmt->filename _anyway_, even if the user
443 * has specified their own output file, because some
444 * formats (eg OBJ and COFF) use ofmt->filename to find out
445 * the name of the input file and then put that inside the
446 * file.
447 */
448 ofmt->filename(inname, outname);
449
450 ofile = fopen(outname, (ofmt->flags & OFMT_TEXT) ? "w" : "wb");
451 if (!ofile) {
452 nasm_error(ERR_FATAL | ERR_NOFILE,
453 "unable to open output file `%s'", outname);
454 }
455
456 /*
457 * We must call init_labels() before ofmt->init() since
458 * some object formats will want to define labels in their
459 * init routines. (eg OS/2 defines the FLAT group)
460 */
461 init_labels();
462
463 ofmt->init();
464 dfmt = ofmt->current_dfmt;
465 dfmt->init();
466
467 assemble_file(inname, depend_ptr);
468
469 if (!terminate_after_phase) {
470 ofmt->cleanup(using_debug_info);
471 cleanup_labels();
472 fflush(ofile);
473 if (ferror(ofile)) {
474 nasm_error(ERR_NONFATAL|ERR_NOFILE,
475 "write error on output file `%s'", outname);
476 }
477 }
478
479 if (ofile) {
480 fclose(ofile);
481 if (terminate_after_phase)
482 remove(outname);
483 ofile = NULL;
484 }
485 }
486 break;
487 }
488
489 if (depend_list && !terminate_after_phase)
490 emit_dependencies(depend_list);
491
492 if (want_usage)
493 usage();
494
495 raa_free(offsets);
496 saa_free(forwrefs);
497 eval_cleanup();
498 stdscan_cleanup();
499
500 return terminate_after_phase;
501 }
502
503 /*
504 * Get a parameter for a command line option.
505 * First arg must be in the form of e.g. -f...
506 */
507 static char *get_param(char *p, char *q, bool *advance)
508 {
509 *advance = false;
510 if (p[2]) /* the parameter's in the option */
511 return nasm_skip_spaces(p + 2);
512 if (q && q[0]) {
513 *advance = true;
514 return q;
515 }
516 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
517 "option `-%c' requires an argument", p[1]);
518 return NULL;
519 }
520
521 /*
522 * Copy a filename
523 */
524 static void copy_filename(char *dst, const char *src)
525 {
526 size_t len = strlen(src);
527
528 if (len >= (size_t)FILENAME_MAX) {
529 nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
530 return;
531 }
532 strncpy(dst, src, FILENAME_MAX);
533 }
534
535 /*
536 * Convert a string to Make-safe form
537 */
538 static char *quote_for_make(const char *str)
539 {
540 const char *p;
541 char *os, *q;
542
543 size_t n = 1; /* Terminating zero */
544 size_t nbs = 0;
545
546 if (!str)
547 return NULL;
548
549 for (p = str; *p; p++) {
550 switch (*p) {
551 case ' ':
552 case '\t':
553 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
554 n += nbs + 2;
555 nbs = 0;
556 break;
557 case '$':
558 case '#':
559 nbs = 0;
560 n += 2;
561 break;
562 case '\\':
563 nbs++;
564 n++;
565 break;
566 default:
567 nbs = 0;
568 n++;
569 break;
570 }
571 }
572
573 /* Convert N backslashes at the end of filename to 2N backslashes */
574 if (nbs)
575 n += nbs;
576
577 os = q = nasm_malloc(n);
578
579 nbs = 0;
580 for (p = str; *p; p++) {
581 switch (*p) {
582 case ' ':
583 case '\t':
584 while (nbs--)
585 *q++ = '\\';
586 *q++ = '\\';
587 *q++ = *p;
588 break;
589 case '$':
590 *q++ = *p;
591 *q++ = *p;
592 nbs = 0;
593 break;
594 case '#':
595 *q++ = '\\';
596 *q++ = *p;
597 nbs = 0;
598 break;
599 case '\\':
600 *q++ = *p;
601 nbs++;
602 break;
603 default:
604 *q++ = *p;
605 nbs = 0;
606 break;
607 }
608 }
609 while (nbs--)
610 *q++ = '\\';
611
612 *q = '\0';
613
614 return os;
615 }
616
617 struct textargs {
618 const char *label;
619 int value;
620 };
621
622 #define OPT_PREFIX 0
623 #define OPT_POSTFIX 1
624 struct textargs textopts[] = {
625 {"prefix", OPT_PREFIX},
626 {"postfix", OPT_POSTFIX},
627 {NULL, 0}
628 };
629
630 static bool stopoptions = false;
631 static bool process_arg(char *p, char *q)
632 {
633 char *param;
634 int i;
635 bool advance = false;
636 bool do_warn;
637
638 if (!p || !p[0])
639 return false;
640
641 if (p[0] == '-' && !stopoptions) {
642 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
643 /* These parameters take values */
644 if (!(param = get_param(p, q, &advance)))
645 return advance;
646 }
647
648 switch (p[1]) {
649 case 's':
650 error_file = stdout;
651 break;
652
653 case 'o': /* output file */
654 copy_filename(outname, param);
655 break;
656
657 case 'f': /* output format */
658 ofmt = ofmt_find(param, &ofmt_alias);
659 if (!ofmt) {
660 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
661 "unrecognised output format `%s' - "
662 "use -hf for a list", param);
663 }
664 break;
665
666 case 'O': /* Optimization level */
667 {
668 int opt;
669
670 if (!*param) {
671 /* Naked -O == -Ox */
672 optimizing = MAX_OPTIMIZE;
673 } else {
674 while (*param) {
675 switch (*param) {
676 case '0': case '1': case '2': case '3': case '4':
677 case '5': case '6': case '7': case '8': case '9':
678 opt = strtoul(param, &param, 10);
679
680 /* -O0 -> optimizing == -1, 0.98 behaviour */
681 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
682 if (opt < 2)
683 optimizing = opt - 1;
684 else
685 optimizing = opt;
686 break;
687
688 case 'v':
689 case '+':
690 param++;
691 opt_verbose_info = true;
692 break;
693
694 case 'x':
695 param++;
696 optimizing = MAX_OPTIMIZE;
697 break;
698
699 default:
700 nasm_error(ERR_FATAL,
701 "unknown optimization option -O%c\n",
702 *param);
703 break;
704 }
705 }
706 if (optimizing > MAX_OPTIMIZE)
707 optimizing = MAX_OPTIMIZE;
708 }
709 break;
710 }
711
712 case 'p': /* pre-include */
713 case 'P':
714 preproc->pre_include(param);
715 break;
716
717 case 'd': /* pre-define */
718 case 'D':
719 preproc->pre_define(param);
720 break;
721
722 case 'u': /* un-define */
723 case 'U':
724 preproc->pre_undefine(param);
725 break;
726
727 case 'i': /* include search path */
728 case 'I':
729 preproc->include_path(param);
730 break;
731
732 case 'l': /* listing file */
733 copy_filename(listname, param);
734 break;
735
736 case 'Z': /* error messages file */
737 copy_filename(errname, param);
738 break;
739
740 case 'F': /* specify debug format */
741 ofmt->current_dfmt = dfmt_find(ofmt, param);
742 if (!ofmt->current_dfmt) {
743 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
744 "unrecognized debug format `%s' for"
745 " output format `%s'",
746 param, ofmt->shortname);
747 }
748 using_debug_info = true;
749 break;
750
751 case 'X': /* specify error reporting format */
752 if (nasm_stricmp("vc", param) == 0)
753 nasm_set_verror(nasm_verror_vc);
754 else if (nasm_stricmp("gnu", param) == 0)
755 nasm_set_verror(nasm_verror_gnu);
756 else
757 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
758 "unrecognized error reporting format `%s'",
759 param);
760 break;
761
762 case 'g':
763 using_debug_info = true;
764 break;
765
766 case 'h':
767 printf
768 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
769 "[-l listfile]\n"
770 " [options...] [--] filename\n"
771 " or nasm -v for version info\n\n"
772 " -t assemble in SciTech TASM compatible mode\n"
773 " -g generate debug information in selected format\n");
774 printf
775 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
776 " -a don't preprocess (assemble only)\n"
777 " -M generate Makefile dependencies on stdout\n"
778 " -MG d:o, missing files assumed generated\n"
779 " -MF <file> set Makefile dependency file\n"
780 " -MD <file> assemble and generate dependencies\n"
781 " -MT <file> dependency target name\n"
782 " -MQ <file> dependency target name (quoted)\n"
783 " -MP emit phony target\n\n"
784 " -Z<file> redirect error messages to file\n"
785 " -s redirect error messages to stdout\n\n"
786 " -F format select a debugging format\n\n"
787 " -o outfile write output to an outfile\n\n"
788 " -f format select an output format\n\n"
789 " -l listfile write listing to a listfile\n\n"
790 " -I<path> adds a pathname to the include file path\n");
791 printf
792 (" -O<digit> optimize branch offsets\n"
793 " -O0: No optimization\n"
794 " -O1: Minimal optimization\n"
795 " -Ox: Multipass optimization (default)\n\n"
796 " -P<file> pre-includes a file\n"
797 " -D<macro>[=<value>] pre-defines a macro\n"
798 " -U<macro> undefines a macro\n"
799 " -X<format> specifies error reporting format (gnu or vc)\n"
800 " -w+foo enables warning foo (equiv. -Wfoo)\n"
801 " -w-foo disable warning foo (equiv. -Wno-foo)\n\n"
802 " -h show invocation summary and exit\n\n"
803 "--prefix,--postfix\n"
804 " this options prepend or append the given argument to all\n"
805 " extern and global variables\n\n"
806 "Warnings:\n");
807 for (i = 0; i <= ERR_WARN_MAX; i++)
808 printf(" %-23s %s (default %s)\n",
809 warnings[i].name, warnings[i].help,
810 warnings[i].enabled ? "on" : "off");
811 printf
812 ("\nresponse files should contain command line parameters"
813 ", one per line.\n");
814 if (p[2] == 'f') {
815 printf("\nvalid output formats for -f are"
816 " (`*' denotes default):\n");
817 ofmt_list(ofmt, stdout);
818 } else {
819 printf("\nFor a list of valid output formats, use -hf.\n");
820 printf("For a list of debug formats, use -f <form> -y.\n");
821 }
822 exit(0); /* never need usage message here */
823 break;
824
825 case 'y':
826 printf("\nvalid debug formats for '%s' output format are"
827 " ('*' denotes default):\n", ofmt->shortname);
828 dfmt_list(ofmt, stdout);
829 exit(0);
830 break;
831
832 case 't':
833 tasm_compatible_mode = true;
834 break;
835
836 case 'v':
837 printf("NASM version %s compiled on %s%s\n",
838 nasm_version, nasm_date, nasm_compile_options);
839 exit(0); /* never need usage message here */
840 break;
841
842 case 'e': /* preprocess only */
843 case 'E':
844 operating_mode = op_preprocess;
845 break;
846
847 case 'a': /* assemble only - don't preprocess */
848 preproc = &preproc_nop;
849 break;
850
851 case 'W':
852 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
853 do_warn = false;
854 param += 3;
855 } else {
856 do_warn = true;
857 }
858 goto set_warning;
859
860 case 'w':
861 if (param[0] != '+' && param[0] != '-') {
862 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
863 "invalid option to `-w'");
864 break;
865 }
866 do_warn = (param[0] == '+');
867 param++;
868
869 set_warning:
870 for (i = 0; i <= ERR_WARN_MAX; i++) {
871 if (!nasm_stricmp(param, warnings[i].name))
872 break;
873 }
874 if (i <= ERR_WARN_MAX) {
875 warning_on_global[i] = do_warn;
876 } else if (!nasm_stricmp(param, "all")) {
877 for (i = 1; i <= ERR_WARN_MAX; i++)
878 warning_on_global[i] = do_warn;
879 } else if (!nasm_stricmp(param, "none")) {
880 for (i = 1; i <= ERR_WARN_MAX; i++)
881 warning_on_global[i] = !do_warn;
882 } else {
883 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
884 "invalid warning `%s'", param);
885 }
886 break;
887
888 case 'M':
889 switch (p[2]) {
890 case 0:
891 operating_mode = op_depend;
892 break;
893 case 'G':
894 operating_mode = op_depend;
895 depend_missing_ok = true;
896 break;
897 case 'P':
898 depend_emit_phony = true;
899 break;
900 case 'D':
901 depend_file = q;
902 advance = true;
903 break;
904 case 'T':
905 depend_target = q;
906 advance = true;
907 break;
908 case 'Q':
909 depend_target = quote_for_make(q);
910 advance = true;
911 break;
912 default:
913 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
914 "unknown dependency option `-M%c'", p[2]);
915 break;
916 }
917 if (advance && (!q || !q[0])) {
918 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
919 "option `-M%c' requires a parameter", p[2]);
920 break;
921 }
922 break;
923
924 case '-':
925 {
926 int s;
927
928 if (p[2] == 0) { /* -- => stop processing options */
929 stopoptions = 1;
930 break;
931 }
932 for (s = 0; textopts[s].label; s++) {
933 if (!nasm_stricmp(p + 2, textopts[s].label)) {
934 break;
935 }
936 }
937
938 switch (s) {
939
940 case OPT_PREFIX:
941 case OPT_POSTFIX:
942 {
943 if (!q) {
944 nasm_error(ERR_NONFATAL | ERR_NOFILE |
945 ERR_USAGE,
946 "option `--%s' requires an argument",
947 p + 2);
948 break;
949 } else {
950 advance = 1, param = q;
951 }
952
953 if (s == OPT_PREFIX) {
954 strncpy(lprefix, param, PREFIX_MAX - 1);
955 lprefix[PREFIX_MAX - 1] = 0;
956 break;
957 }
958 if (s == OPT_POSTFIX) {
959 strncpy(lpostfix, param, POSTFIX_MAX - 1);
960 lpostfix[POSTFIX_MAX - 1] = 0;
961 break;
962 }
963 break;
964 }
965 default:
966 {
967 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
968 "unrecognised option `--%s'", p + 2);
969 break;
970 }
971 }
972 break;
973 }
974
975 default:
976 if (!ofmt->setinfo(GI_SWITCH, &p))
977 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
978 "unrecognised option `-%c'", p[1]);
979 break;
980 }
981 } else {
982 if (*inname) {
983 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
984 "more than one input file specified");
985 } else {
986 copy_filename(inname, p);
987 }
988 }
989
990 return advance;
991 }
992
993 #define ARG_BUF_DELTA 128
994
995 static void process_respfile(FILE * rfile)
996 {
997 char *buffer, *p, *q, *prevarg;
998 int bufsize, prevargsize;
999
1000 bufsize = prevargsize = ARG_BUF_DELTA;
1001 buffer = nasm_malloc(ARG_BUF_DELTA);
1002 prevarg = nasm_malloc(ARG_BUF_DELTA);
1003 prevarg[0] = '\0';
1004
1005 while (1) { /* Loop to handle all lines in file */
1006 p = buffer;
1007 while (1) { /* Loop to handle long lines */
1008 q = fgets(p, bufsize - (p - buffer), rfile);
1009 if (!q)
1010 break;
1011 p += strlen(p);
1012 if (p > buffer && p[-1] == '\n')
1013 break;
1014 if (p - buffer > bufsize - 10) {
1015 int offset;
1016 offset = p - buffer;
1017 bufsize += ARG_BUF_DELTA;
1018 buffer = nasm_realloc(buffer, bufsize);
1019 p = buffer + offset;
1020 }
1021 }
1022
1023 if (!q && p == buffer) {
1024 if (prevarg[0])
1025 process_arg(prevarg, NULL);
1026 nasm_free(buffer);
1027 nasm_free(prevarg);
1028 return;
1029 }
1030
1031 /*
1032 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1033 * them are present at the end of the line.
1034 */
1035 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
1036
1037 while (p > buffer && nasm_isspace(p[-1]))
1038 *--p = '\0';
1039
1040 p = nasm_skip_spaces(buffer);
1041
1042 if (process_arg(prevarg, p))
1043 *p = '\0';
1044
1045 if ((int) strlen(p) > prevargsize - 10) {
1046 prevargsize += ARG_BUF_DELTA;
1047 prevarg = nasm_realloc(prevarg, prevargsize);
1048 }
1049 strncpy(prevarg, p, prevargsize);
1050 }
1051 }
1052
1053 /* Function to process args from a string of args, rather than the
1054 * argv array. Used by the environment variable and response file
1055 * processing.
1056 */
1057 static void process_args(char *args)
1058 {
1059 char *p, *q, *arg, *prevarg;
1060 char separator = ' ';
1061
1062 p = args;
1063 if (*p && *p != '-')
1064 separator = *p++;
1065 arg = NULL;
1066 while (*p) {
1067 q = p;
1068 while (*p && *p != separator)
1069 p++;
1070 while (*p == separator)
1071 *p++ = '\0';
1072 prevarg = arg;
1073 arg = q;
1074 if (process_arg(prevarg, arg))
1075 arg = NULL;
1076 }
1077 if (arg)
1078 process_arg(arg, NULL);
1079 }
1080
1081 static void process_response_file(const char *file)
1082 {
1083 char str[2048];
1084 FILE *f = fopen(file, "r");
1085 if (!f) {
1086 perror(file);
1087 exit(-1);
1088 }
1089 while (fgets(str, sizeof str, f)) {
1090 process_args(str);
1091 }
1092 fclose(f);
1093 }
1094
1095 static void parse_cmdline(int argc, char **argv)
1096 {
1097 FILE *rfile;
1098 char *envreal, *envcopy = NULL, *p;
1099 int i;
1100
1101 *inname = *outname = *listname = *errname = '\0';
1102
1103 for (i = 0; i <= ERR_WARN_MAX; i++)
1104 warning_on_global[i] = warnings[i].enabled;
1105
1106 /*
1107 * First, process the NASMENV environment variable.
1108 */
1109 envreal = getenv("NASMENV");
1110 if (envreal) {
1111 envcopy = nasm_strdup(envreal);
1112 process_args(envcopy);
1113 nasm_free(envcopy);
1114 }
1115
1116 /*
1117 * Now process the actual command line.
1118 */
1119 while (--argc) {
1120 bool advance;
1121 argv++;
1122 if (argv[0][0] == '@') {
1123 /*
1124 * We have a response file, so process this as a set of
1125 * arguments like the environment variable. This allows us
1126 * to have multiple arguments on a single line, which is
1127 * different to the -@resp file processing below for regular
1128 * NASM.
1129 */
1130 process_response_file(argv[0]+1);
1131 argc--;
1132 argv++;
1133 }
1134 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1135 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1136 if (p) {
1137 rfile = fopen(p, "r");
1138 if (rfile) {
1139 process_respfile(rfile);
1140 fclose(rfile);
1141 } else
1142 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1143 "unable to open response file `%s'", p);
1144 }
1145 } else
1146 advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1147 argv += advance, argc -= advance;
1148 }
1149
1150 /*
1151 * Look for basic command line typos. This definitely doesn't
1152 * catch all errors, but it might help cases of fumbled fingers.
1153 */
1154 if (!*inname)
1155 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1156 "no input file specified");
1157 else if (!strcmp(inname, errname) ||
1158 !strcmp(inname, outname) ||
1159 !strcmp(inname, listname) ||
1160 (depend_file && !strcmp(inname, depend_file)))
1161 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1162 "file `%s' is both input and output file",
1163 inname);
1164
1165 if (*errname) {
1166 error_file = fopen(errname, "w");
1167 if (!error_file) {
1168 error_file = stderr; /* Revert to default! */
1169 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1170 "cannot open file `%s' for error messages",
1171 errname);
1172 }
1173 }
1174 }
1175
1176 static enum directives getkw(char **directive, char **value);
1177
1178 static void assemble_file(char *fname, StrList **depend_ptr)
1179 {
1180 char *directive, *value, *p, *q, *special, *line;
1181 insn output_ins;
1182 int i, validid;
1183 bool rn_error;
1184 int32_t seg;
1185 int64_t offs;
1186 struct tokenval tokval;
1187 expr *e;
1188 int pass_max;
1189
1190 if (cmd_sb == 32 && cmd_cpu < IF_386)
1191 nasm_error(ERR_FATAL, "command line: "
1192 "32-bit segment size requires a higher cpu");
1193
1194 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1195 for (passn = 1; pass0 <= 2; passn++) {
1196 int pass1, pass2;
1197 ldfunc def_label;
1198
1199 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1200 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1201 /* pass0 0, 0, 0, ..., 1, 2 */
1202
1203 def_label = passn > 1 ? redefine_label : define_label;
1204
1205 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1206 cpu = cmd_cpu;
1207 if (pass0 == 2) {
1208 if (*listname)
1209 nasmlist.init(listname, nasm_error);
1210 }
1211 in_abs_seg = false;
1212 global_offset_changed = 0; /* set by redefine_label */
1213 location.segment = ofmt->section(NULL, pass2, &sb);
1214 globalbits = sb;
1215 if (passn > 1) {
1216 saa_rewind(forwrefs);
1217 forwref = saa_rstruct(forwrefs);
1218 raa_free(offsets);
1219 offsets = raa_init();
1220 }
1221 preproc->reset(fname, pass1, &nasmlist,
1222 pass1 == 2 ? depend_ptr : NULL);
1223 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1224
1225 globallineno = 0;
1226 if (passn == 1)
1227 location.known = true;
1228 location.offset = offs = get_curr_offs();
1229
1230 while ((line = preproc->getline())) {
1231 enum directives d;
1232 globallineno++;
1233
1234 /*
1235 * Here we parse our directives; this is not handled by the
1236 * 'real' parser. This really should be a separate function.
1237 */
1238 directive = line;
1239 d = getkw(&directive, &value);
1240 if (d) {
1241 int err = 0;
1242
1243 switch (d) {
1244 case D_SEGMENT: /* [SEGMENT n] */
1245 case D_SECTION:
1246 seg = ofmt->section(value, pass2, &sb);
1247 if (seg == NO_SEG) {
1248 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1249 "segment name `%s' not recognized",
1250 value);
1251 } else {
1252 in_abs_seg = false;
1253 location.segment = seg;
1254 }
1255 break;
1256 case D_SECTALIGN: /* [SECTALIGN n] */
1257 if (*value) {
1258 stdscan_reset();
1259 stdscan_set(value);
1260 tokval.t_type = TOKEN_INVALID;
1261 e = evaluate(stdscan, NULL, &tokval, NULL, pass2, nasm_error, NULL);
1262 if (e) {
1263 unsigned int align = (unsigned int)e->value;
1264 if ((uint64_t)e->value > 0x7fffffff) {
1265 /*
1266 * FIXME: Please make some sane message here
1267 * ofmt should have some 'check' method which
1268 * would report segment alignment bounds.
1269 */
1270 nasm_error(ERR_FATAL,
1271 "incorrect segment alignment `%s'", value);
1272 } else if (!is_power2(align)) {
1273 nasm_error(ERR_NONFATAL,
1274 "segment alignment `%s' is not power of two",
1275 value);
1276 }
1277 /* callee should be able to handle all details */
1278 ofmt->sectalign(location.segment, align);
1279 }
1280 }
1281 break;
1282 case D_EXTERN: /* [EXTERN label:special] */
1283 if (*value == '$')
1284 value++; /* skip initial $ if present */
1285 if (pass0 == 2) {
1286 q = value;
1287 while (*q && *q != ':')
1288 q++;
1289 if (*q == ':') {
1290 *q++ = '\0';
1291 ofmt->symdef(value, 0L, 0L, 3, q);
1292 }
1293 } else if (passn == 1) {
1294 q = value;
1295 validid = true;
1296 if (!isidstart(*q))
1297 validid = false;
1298 while (*q && *q != ':') {
1299 if (!isidchar(*q))
1300 validid = false;
1301 q++;
1302 }
1303 if (!validid) {
1304 nasm_error(ERR_NONFATAL,
1305 "identifier expected after EXTERN");
1306 break;
1307 }
1308 if (*q == ':') {
1309 *q++ = '\0';
1310 special = q;
1311 } else
1312 special = NULL;
1313 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1314 int temp = pass0;
1315 pass0 = 1; /* fake pass 1 in labels.c */
1316 declare_as_global(value, special);
1317 define_label(value, seg_alloc(), 0L, NULL,
1318 false, true);
1319 pass0 = temp;
1320 }
1321 } /* else pass0 == 1 */
1322 break;
1323 case D_BITS: /* [BITS bits] */
1324 globalbits = sb = get_bits(value);
1325 break;
1326 case D_GLOBAL: /* [GLOBAL symbol:special] */
1327 if (*value == '$')
1328 value++; /* skip initial $ if present */
1329 if (pass0 == 2) { /* pass 2 */
1330 q = value;
1331 while (*q && *q != ':')
1332 q++;
1333 if (*q == ':') {
1334 *q++ = '\0';
1335 ofmt->symdef(value, 0L, 0L, 3, q);
1336 }
1337 } else if (pass2 == 1) { /* pass == 1 */
1338 q = value;
1339 validid = true;
1340 if (!isidstart(*q))
1341 validid = false;
1342 while (*q && *q != ':') {
1343 if (!isidchar(*q))
1344 validid = false;
1345 q++;
1346 }
1347 if (!validid) {
1348 nasm_error(ERR_NONFATAL,
1349 "identifier expected after GLOBAL");
1350 break;
1351 }
1352 if (*q == ':') {
1353 *q++ = '\0';
1354 special = q;
1355 } else
1356 special = NULL;
1357 declare_as_global(value, special);
1358 } /* pass == 1 */
1359 break;
1360 case D_COMMON: /* [COMMON symbol size:special] */
1361 {
1362 int64_t size;
1363
1364 if (*value == '$')
1365 value++; /* skip initial $ if present */
1366 p = value;
1367 validid = true;
1368 if (!isidstart(*p))
1369 validid = false;
1370 while (*p && !nasm_isspace(*p)) {
1371 if (!isidchar(*p))
1372 validid = false;
1373 p++;
1374 }
1375 if (!validid) {
1376 nasm_error(ERR_NONFATAL,
1377 "identifier expected after COMMON");
1378 break;
1379 }
1380 if (*p) {
1381 p = nasm_zap_spaces_fwd(p);
1382 q = p;
1383 while (*q && *q != ':')
1384 q++;
1385 if (*q == ':') {
1386 *q++ = '\0';
1387 special = q;
1388 } else {
1389 special = NULL;
1390 }
1391 size = readnum(p, &rn_error);
1392 if (rn_error) {
1393 nasm_error(ERR_NONFATAL,
1394 "invalid size specified"
1395 " in COMMON declaration");
1396 break;
1397 }
1398 } else {
1399 nasm_error(ERR_NONFATAL,
1400 "no size specified in"
1401 " COMMON declaration");
1402 break;
1403 }
1404
1405 if (pass0 < 2) {
1406 define_common(value, seg_alloc(), size, special);
1407 } else if (pass0 == 2) {
1408 if (special)
1409 ofmt->symdef(value, 0L, 0L, 3, special);
1410 }
1411 break;
1412 }
1413 case D_ABSOLUTE: /* [ABSOLUTE address] */
1414 stdscan_reset();
1415 stdscan_set(value);
1416 tokval.t_type = TOKEN_INVALID;
1417 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1418 nasm_error, NULL);
1419 if (e) {
1420 if (!is_reloc(e))
1421 nasm_error(pass0 ==
1422 1 ? ERR_NONFATAL : ERR_PANIC,
1423 "cannot use non-relocatable expression as "
1424 "ABSOLUTE address");
1425 else {
1426 abs_seg = reloc_seg(e);
1427 abs_offset = reloc_value(e);
1428 }
1429 } else if (passn == 1)
1430 abs_offset = 0x100; /* don't go near zero in case of / */
1431 else
1432 nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
1433 "in pass two");
1434 in_abs_seg = true;
1435 location.segment = NO_SEG;
1436 break;
1437 case D_DEBUG: /* [DEBUG] */
1438 {
1439 char debugid[128];
1440 bool badid, overlong;
1441
1442 p = value;
1443 q = debugid;
1444 badid = overlong = false;
1445 if (!isidstart(*p)) {
1446 badid = true;
1447 } else {
1448 while (*p && !nasm_isspace(*p)) {
1449 if (q >= debugid + sizeof debugid - 1) {
1450 overlong = true;
1451 break;
1452 }
1453 if (!isidchar(*p))
1454 badid = true;
1455 *q++ = *p++;
1456 }
1457 *q = 0;
1458 }
1459 if (badid) {
1460 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1461 "identifier expected after DEBUG");
1462 break;
1463 }
1464 if (overlong) {
1465 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1466 "DEBUG identifier too long");
1467 break;
1468 }
1469 p = nasm_skip_spaces(p);
1470 if (pass0 == 2)
1471 dfmt->debug_directive(debugid, p);
1472 break;
1473 }
1474 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1475 value = nasm_skip_spaces(value);
1476 switch(*value) {
1477 case '-': validid = 0; value++; break;
1478 case '+': validid = 1; value++; break;
1479 case '*': validid = 2; value++; break;
1480 default: validid = 1; break;
1481 }
1482
1483 for (i = 1; i <= ERR_WARN_MAX; i++)
1484 if (!nasm_stricmp(value, warnings[i].name))
1485 break;
1486 if (i <= ERR_WARN_MAX) {
1487 switch(validid) {
1488 case 0:
1489 warning_on[i] = false;
1490 break;
1491 case 1:
1492 warning_on[i] = true;
1493 break;
1494 case 2:
1495 warning_on[i] = warning_on_global[i];
1496 break;
1497 }
1498 } else
1499 nasm_error(ERR_NONFATAL,
1500 "invalid warning id in WARNING directive");
1501 break;
1502 case D_CPU: /* [CPU] */
1503 cpu = get_cpu(value);
1504 break;
1505 case D_LIST: /* [LIST {+|-}] */
1506 value = nasm_skip_spaces(value);
1507 if (*value == '+') {
1508 user_nolist = 0;
1509 } else {
1510 if (*value == '-') {
1511 user_nolist = 1;
1512 } else {
1513 err = 1;
1514 }
1515 }
1516 break;
1517 case D_DEFAULT: /* [DEFAULT] */
1518 stdscan_reset();
1519 stdscan_set(value);
1520 tokval.t_type = TOKEN_INVALID;
1521 if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1522 switch ((int)tokval.t_integer) {
1523 case S_REL:
1524 globalrel = 1;
1525 break;
1526 case S_ABS:
1527 globalrel = 0;
1528 break;
1529 default:
1530 err = 1;
1531 break;
1532 }
1533 } else {
1534 err = 1;
1535 }
1536 break;
1537 case D_FLOAT:
1538 if (float_option(value)) {
1539 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1540 "unknown 'float' directive: %s",
1541 value);
1542 }
1543 break;
1544 default:
1545 if (ofmt->directive(d, value, pass2))
1546 break;
1547 /* else fall through */
1548 case D_unknown:
1549 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1550 "unrecognised directive [%s]",
1551 directive);
1552 break;
1553 }
1554 if (err) {
1555 nasm_error(ERR_NONFATAL,
1556 "invalid parameter to [%s] directive",
1557 directive);
1558 }
1559 } else { /* it isn't a directive */
1560 parse_line(pass1, line, &output_ins, def_label);
1561
1562 if (optimizing > 0) {
1563 if (forwref != NULL && globallineno == forwref->lineno) {
1564 output_ins.forw_ref = true;
1565 do {
1566 output_ins.oprs[forwref->operand].opflags |= OPFLAG_FORWARD;
1567 forwref = saa_rstruct(forwrefs);
1568 } while (forwref != NULL
1569 && forwref->lineno == globallineno);
1570 } else
1571 output_ins.forw_ref = false;
1572
1573 if (output_ins.forw_ref) {
1574 if (passn == 1) {
1575 for (i = 0; i < output_ins.operands; i++) {
1576 if (output_ins.oprs[i].opflags & OPFLAG_FORWARD) {
1577 struct forwrefinfo *fwinf = (struct forwrefinfo *)saa_wstruct(forwrefs);
1578 fwinf->lineno = globallineno;
1579 fwinf->operand = i;
1580 }
1581 }
1582 }
1583 }
1584 }
1585
1586 /* forw_ref */
1587 if (output_ins.opcode == I_EQU) {
1588 if (pass1 == 1) {
1589 /*
1590 * Special `..' EQUs get processed in pass two,
1591 * except `..@' macro-processor EQUs which are done
1592 * in the normal place.
1593 */
1594 if (!output_ins.label)
1595 nasm_error(ERR_NONFATAL,
1596 "EQU not preceded by label");
1597
1598 else if (output_ins.label[0] != '.' ||
1599 output_ins.label[1] != '.' ||
1600 output_ins.label[2] == '@') {
1601 if (output_ins.operands == 1 &&
1602 (output_ins.oprs[0].type & IMMEDIATE) &&
1603 output_ins.oprs[0].wrt == NO_SEG) {
1604 bool isext = !!(output_ins.oprs[0].opflags & OPFLAG_EXTERN);
1605 def_label(output_ins.label,
1606 output_ins.oprs[0].segment,
1607 output_ins.oprs[0].offset, NULL,
1608 false, isext);
1609 } else if (output_ins.operands == 2
1610 && (output_ins.oprs[0].type & IMMEDIATE)
1611 && (output_ins.oprs[0].type & COLON)
1612 && output_ins.oprs[0].segment == NO_SEG
1613 && output_ins.oprs[0].wrt == NO_SEG
1614 && (output_ins.oprs[1].type & IMMEDIATE)
1615 && output_ins.oprs[1].segment == NO_SEG
1616 && output_ins.oprs[1].wrt == NO_SEG) {
1617 def_label(output_ins.label,
1618 output_ins.oprs[0].offset | SEG_ABS,
1619 output_ins.oprs[1].offset,
1620 NULL, false, false);
1621 } else
1622 nasm_error(ERR_NONFATAL,
1623 "bad syntax for EQU");
1624 }
1625 } else {
1626 /*
1627 * Special `..' EQUs get processed here, except
1628 * `..@' macro processor EQUs which are done above.
1629 */
1630 if (output_ins.label[0] == '.' &&
1631 output_ins.label[1] == '.' &&
1632 output_ins.label[2] != '@') {
1633 if (output_ins.operands == 1 &&
1634 (output_ins.oprs[0].type & IMMEDIATE)) {
1635 define_label(output_ins.label,
1636 output_ins.oprs[0].segment,
1637 output_ins.oprs[0].offset,
1638 NULL, false, false);
1639 } else if (output_ins.operands == 2
1640 && (output_ins.oprs[0].type & IMMEDIATE)
1641 && (output_ins.oprs[0].type & COLON)
1642 && output_ins.oprs[0].segment == NO_SEG
1643 && (output_ins.oprs[1].type & IMMEDIATE)
1644 && output_ins.oprs[1].segment == NO_SEG) {
1645 define_label(output_ins.label,
1646 output_ins.oprs[0].offset | SEG_ABS,
1647 output_ins.oprs[1].offset,
1648 NULL, false, false);
1649 } else
1650 nasm_error(ERR_NONFATAL,
1651 "bad syntax for EQU");
1652 }
1653 }
1654 } else { /* instruction isn't an EQU */
1655
1656 if (pass1 == 1) {
1657
1658 int64_t l = insn_size(location.segment, offs, sb, cpu,
1659 &output_ins, nasm_error);
1660
1661 /* if (using_debug_info) && output_ins.opcode != -1) */
1662 if (using_debug_info)
1663 { /* fbk 03/25/01 */
1664 /* this is done here so we can do debug type info */
1665 int32_t typeinfo =
1666 TYS_ELEMENTS(output_ins.operands);
1667 switch (output_ins.opcode) {
1668 case I_RESB:
1669 typeinfo =
1670 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_BYTE;
1671 break;
1672 case I_RESW:
1673 typeinfo =
1674 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_WORD;
1675 break;
1676 case I_RESD:
1677 typeinfo =
1678 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_DWORD;
1679 break;
1680 case I_RESQ:
1681 typeinfo =
1682 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_QWORD;
1683 break;
1684 case I_REST:
1685 typeinfo =
1686 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_TBYTE;
1687 break;
1688 case I_RESO:
1689 typeinfo =
1690 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_OWORD;
1691 break;
1692 case I_RESY:
1693 typeinfo =
1694 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_YWORD;
1695 break;
1696 case I_DB:
1697 typeinfo |= TY_BYTE;
1698 break;
1699 case I_DW:
1700 typeinfo |= TY_WORD;
1701 break;
1702 case I_DD:
1703 if (output_ins.eops_float)
1704 typeinfo |= TY_FLOAT;
1705 else
1706 typeinfo |= TY_DWORD;
1707 break;
1708 case I_DQ:
1709 typeinfo |= TY_QWORD;
1710 break;
1711 case I_DT:
1712 typeinfo |= TY_TBYTE;
1713 break;
1714 case I_DO:
1715 typeinfo |= TY_OWORD;
1716 break;
1717 case I_DY:
1718 typeinfo |= TY_YWORD;
1719 break;
1720 default:
1721 typeinfo = TY_LABEL;
1722
1723 }
1724
1725 dfmt->debug_typevalue(typeinfo);
1726 }
1727 if (l != -1) {
1728 offs += l;
1729 set_curr_offs(offs);
1730 }
1731 /*
1732 * else l == -1 => invalid instruction, which will be
1733 * flagged as an error on pass 2
1734 */
1735
1736 } else {
1737 offs += assemble(location.segment, offs, sb, cpu,
1738 &output_ins, ofmt, nasm_error,
1739 &nasmlist);
1740 set_curr_offs(offs);
1741
1742 }
1743 } /* not an EQU */
1744 cleanup_insn(&output_ins);
1745 }
1746 nasm_free(line);
1747 location.offset = offs = get_curr_offs();
1748 } /* end while (line = preproc->getline... */
1749
1750 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1751 nasm_error(ERR_NONFATAL,
1752 "phase error detected at end of assembly.");
1753
1754 if (pass1 == 1)
1755 preproc->cleanup(1);
1756
1757 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1758 pass0++;
1759 } else if (global_offset_changed &&
1760 global_offset_changed < prev_offset_changed) {
1761 prev_offset_changed = global_offset_changed;
1762 stall_count = 0;
1763 } else {
1764 stall_count++;
1765 }
1766
1767 if (terminate_after_phase)
1768 break;
1769
1770 if ((stall_count > 997) || (passn >= pass_max)) {
1771 /* We get here if the labels don't converge
1772 * Example: FOO equ FOO + 1
1773 */
1774 nasm_error(ERR_NONFATAL,
1775 "Can't find valid values for all labels "
1776 "after %d passes, giving up.", passn);
1777 nasm_error(ERR_NONFATAL,
1778 "Possible causes: recursive EQUs, macro abuse.");
1779 break;
1780 }
1781 }
1782
1783 preproc->cleanup(0);
1784 nasmlist.cleanup();
1785 if (!terminate_after_phase && opt_verbose_info) {
1786 /* -On and -Ov switches */
1787 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1788 }
1789 }
1790
1791 static enum directives getkw(char **directive, char **value)
1792 {
1793 char *p, *q, *buf;
1794
1795 buf = nasm_skip_spaces(*directive);
1796
1797 /* it should be enclosed in [ ] */
1798 if (*buf != '[')
1799 return D_none;
1800 q = strchr(buf, ']');
1801 if (!q)
1802 return D_none;
1803
1804 /* stip off the comments */
1805 p = strchr(buf, ';');
1806 if (p) {
1807 if (p < q) /* ouch! somwhere inside */
1808 return D_none;
1809 *p = '\0';
1810 }
1811
1812 /* no brace, no trailing spaces */
1813 *q = '\0';
1814 nasm_zap_spaces_rev(--q);
1815
1816 /* directive */
1817 p = nasm_skip_spaces(++buf);
1818 q = nasm_skip_word(p);
1819 if (!q)
1820 return D_none; /* sigh... no value there */
1821 *q = '\0';
1822 *directive = p;
1823
1824 /* and value finally */
1825 p = nasm_skip_spaces(++q);
1826 *value = p;
1827
1828 return find_directive(*directive);
1829 }
1830
1831 /**
1832 * gnu style error reporting
1833 * This function prints an error message to error_file in the
1834 * style used by GNU. An example would be:
1835 * file.asm:50: error: blah blah blah
1836 * where file.asm is the name of the file, 50 is the line number on
1837 * which the error occurs (or is detected) and "error:" is one of
1838 * the possible optional diagnostics -- it can be "error" or "warning"
1839 * or something else. Finally the line terminates with the actual
1840 * error message.
1841 *
1842 * @param severity the severity of the warning or error
1843 * @param fmt the printf style format string
1844 */
1845 static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
1846 {
1847 char *currentfile = NULL;
1848 int32_t lineno = 0;
1849
1850 if (is_suppressed_warning(severity))
1851 return;
1852
1853 if (!(severity & ERR_NOFILE))
1854 src_get(&lineno, &currentfile);
1855
1856 if (currentfile) {
1857 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1858 nasm_free(currentfile);
1859 } else {
1860 fputs("nasm: ", error_file);
1861 }
1862
1863 nasm_verror_common(severity, fmt, ap);
1864 }
1865
1866 /**
1867 * MS style error reporting
1868 * This function prints an error message to error_file in the
1869 * style used by Visual C and some other Microsoft tools. An example
1870 * would be:
1871 * file.asm(50) : error: blah blah blah
1872 * where file.asm is the name of the file, 50 is the line number on
1873 * which the error occurs (or is detected) and "error:" is one of
1874 * the possible optional diagnostics -- it can be "error" or "warning"
1875 * or something else. Finally the line terminates with the actual
1876 * error message.
1877 *
1878 * @param severity the severity of the warning or error
1879 * @param fmt the printf style format string
1880 */
1881 static void nasm_verror_vc(int severity, const char *fmt, va_list ap)
1882 {
1883 char *currentfile = NULL;
1884 int32_t lineno = 0;
1885
1886 if (is_suppressed_warning(severity))
1887 return;
1888
1889 if (!(severity & ERR_NOFILE))
1890 src_get(&lineno, &currentfile);
1891
1892 if (currentfile) {
1893 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1894 nasm_free(currentfile);
1895 } else {
1896 fputs("nasm: ", error_file);
1897 }
1898
1899 nasm_verror_common(severity, fmt, ap);
1900 }
1901
1902 /**
1903 * check for supressed warning
1904 * checks for suppressed warning or pass one only warning and we're
1905 * not in pass 1
1906 *
1907 * @param severity the severity of the warning or error
1908 * @return true if we should abort error/warning printing
1909 */
1910 static bool is_suppressed_warning(int severity)
1911 {
1912 /* Not a warning at all */
1913 if ((severity & ERR_MASK) != ERR_WARNING)
1914 return false;
1915
1916 /* See if it's a pass-one only warning and we're not in pass one. */
1917 if (((severity & ERR_PASS1) && pass0 != 1) ||
1918 ((severity & ERR_PASS2) && pass0 != 2))
1919 return true;
1920
1921 /* Might be a warning but suppresed explicitly */
1922 if (severity & ERR_WARN_MASK)
1923 return !warning_on[WARN_IDX(severity)];
1924 else
1925 return false;
1926 }
1927
1928 /**
1929 * common error reporting
1930 * This is the common back end of the error reporting schemes currently
1931 * implemented. It prints the nature of the warning and then the
1932 * specific error message to error_file and may or may not return. It
1933 * doesn't return if the error severity is a "panic" or "debug" type.
1934 *
1935 * @param severity the severity of the warning or error
1936 * @param fmt the printf style format string
1937 */
1938 static void nasm_verror_common(int severity, const char *fmt, va_list args)
1939 {
1940 char msg[1024];
1941 const char *pfx;
1942
1943 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1944 case ERR_WARNING:
1945 pfx = "warning: ";
1946 break;
1947 case ERR_NONFATAL:
1948 pfx = "error: ";
1949 break;
1950 case ERR_FATAL:
1951 pfx = "fatal: ";
1952 break;
1953 case ERR_PANIC:
1954 pfx = "panic: ";
1955 break;
1956 case ERR_DEBUG:
1957 pfx = "debug: ";
1958 break;
1959 default:
1960 pfx = "";
1961 break;
1962 }
1963
1964 vsnprintf(msg, sizeof msg, fmt, args);
1965
1966 fprintf(error_file, "%s%s\n", pfx, msg);
1967
1968 if (*listname)
1969 nasmlist.error(severity, pfx, msg);
1970
1971 if (severity & ERR_USAGE)
1972 want_usage = true;
1973
1974 switch (severity & ERR_MASK) {
1975 case ERR_DEBUG:
1976 /* no further action, by definition */
1977 break;
1978 case ERR_WARNING:
1979 /* Treat warnings as errors */
1980 if (warning_on[WARN_IDX(ERR_WARN_TERM)])
1981 terminate_after_phase = true;
1982 break;
1983 case ERR_NONFATAL:
1984 terminate_after_phase = true;
1985 break;
1986 case ERR_FATAL:
1987 if (ofile) {
1988 fclose(ofile);
1989 remove(outname);
1990 ofile = NULL;
1991 }
1992 if (want_usage)
1993 usage();
1994 exit(1); /* instantly die */
1995 break; /* placate silly compilers */
1996 case ERR_PANIC:
1997 fflush(NULL);
1998 /* abort(); */ /* halt, catch fire, and dump core */
1999 exit(3);
2000 break;
2001 }
2002 }
2003
2004 static void usage(void)
2005 {
2006 fputs("type `nasm -h' for help\n", error_file);
2007 }
2008
2009 static uint32_t get_cpu(char *value)
2010 {
2011 if (!strcmp(value, "8086"))
2012 return IF_8086;
2013 if (!strcmp(value, "186"))
2014 return IF_186;
2015 if (!strcmp(value, "286"))
2016 return IF_286;
2017 if (!strcmp(value, "386"))
2018 return IF_386;
2019 if (!strcmp(value, "486"))
2020 return IF_486;
2021 if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2022 return IF_PENT;
2023 if (!strcmp(value, "686") ||
2024 !nasm_stricmp(value, "ppro") ||
2025 !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2026 return IF_P6;
2027 if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2028 return IF_KATMAI;
2029 if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2030 !nasm_stricmp(value, "willamette"))
2031 return IF_WILLAMETTE;
2032 if (!nasm_stricmp(value, "prescott"))
2033 return IF_PRESCOTT;
2034 if (!nasm_stricmp(value, "x64") ||
2035 !nasm_stricmp(value, "x86-64"))
2036 return IF_X86_64;
2037 if (!nasm_stricmp(value, "ia64") ||
2038 !nasm_stricmp(value, "ia-64") ||
2039 !nasm_stricmp(value, "itanium") ||
2040 !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2041 return IF_IA64;
2042
2043 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2044 "unknown 'cpu' type");
2045
2046 return IF_PLEVEL; /* the maximum level */
2047 }
2048
2049 static int get_bits(char *value)
2050 {
2051 int i;
2052
2053 if ((i = atoi(value)) == 16)
2054 return i; /* set for a 16-bit segment */
2055 else if (i == 32) {
2056 if (cpu < IF_386) {
2057 nasm_error(ERR_NONFATAL,
2058 "cannot specify 32-bit segment on processor below a 386");
2059 i = 16;
2060 }
2061 } else if (i == 64) {
2062 if (cpu < IF_X86_64) {
2063 nasm_error(ERR_NONFATAL,
2064 "cannot specify 64-bit segment on processor below an x86-64");
2065 i = 16;
2066 }
2067 if (i != maxbits) {
2068 nasm_error(ERR_NONFATAL,
2069 "%s output format does not support 64-bit code",
2070 ofmt->shortname);
2071 i = 16;
2072 }
2073 } else {
2074 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2075 "`%s' is not a valid segment size; must be 16, 32 or 64",
2076 value);
2077 i = 16;
2078 }
2079 return i;
2080 }
The Netwide Assembler