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nasmlib.h - introduce list iterator helpers
[nasm.git] / nasm.c
blobb2ceacceb725d3d54f7aa896fd918fbfb8501f16
1 /* ----------------------------------------------------------------------- *
2 *
3 * Copyright 1996-2009 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 struct forwrefinfo { /* info held on forward refs. */
65 int lineno;
66 int operand;
67 };
68
69 static int get_bits(char *value);
70 static uint32_t get_cpu(char *cpu_str);
71 static void parse_cmdline(int, char **);
72 static void assemble_file(char *, StrList **);
73 static void nasm_verror_gnu(int severity, const char *fmt, va_list args);
74 static void nasm_verror_vc(int severity, const char *fmt, va_list args);
75 static void nasm_verror_common(int severity, const char *fmt, va_list args);
76 static bool is_suppressed_warning(int severity);
77 static void usage(void);
78
79 static int using_debug_info, opt_verbose_info;
80 bool tasm_compatible_mode = false;
81 int pass0, passn;
82 int maxbits = 0;
83 int globalrel = 0;
84
85 static time_t official_compile_time;
86
87 static char inname[FILENAME_MAX];
88 static char outname[FILENAME_MAX];
89 static char listname[FILENAME_MAX];
90 static char errname[FILENAME_MAX];
91 static int globallineno; /* for forward-reference tracking */
92 /* static int pass = 0; */
93 struct ofmt *ofmt = &OF_DEFAULT;
94 const struct dfmt *dfmt;
95
96 static FILE *error_file; /* Where to write error messages */
97
98 FILE *ofile = NULL;
99 int optimizing = -1; /* number of optimization passes to take */
100 static int sb, cmd_sb = 16; /* by default */
101 static uint32_t cmd_cpu = IF_PLEVEL; /* highest level by default */
102 static uint32_t cpu = IF_PLEVEL; /* passed to insn_size & assemble.c */
103 int64_t global_offset_changed; /* referenced in labels.c */
104 int64_t prev_offset_changed;
105 int32_t stall_count;
106
107 static struct location location;
108 int in_abs_seg; /* Flag we are in ABSOLUTE seg */
109 int32_t abs_seg; /* ABSOLUTE segment basis */
110 int32_t abs_offset; /* ABSOLUTE offset */
111
112 static struct RAA *offsets;
113
114 static struct SAA *forwrefs; /* keep track of forward references */
115 static const struct forwrefinfo *forwref;
116
117 static Preproc *preproc;
118 enum op_type {
119 op_normal, /* Preprocess and assemble */
120 op_preprocess, /* Preprocess only */
121 op_depend, /* Generate dependencies */
122 };
123 static enum op_type operating_mode;
124 /* Dependency flags */
125 static bool depend_emit_phony = false;
126 static bool depend_missing_ok = false;
127 static const char *depend_target = NULL;
128 static const char *depend_file = NULL;
129
130 /*
131 * Which of the suppressible warnings are suppressed. Entry zero
132 * isn't an actual warning, but it used for -w+error/-Werror.
133 */
134
135 static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
136 static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
137
138 static const struct warning {
139 const char *name;
140 const char *help;
141 bool enabled;
142 } warnings[ERR_WARN_MAX+1] = {
143 {"error", "treat warnings as errors", false},
144 {"macro-params", "macro calls with wrong parameter count", true},
145 {"macro-selfref", "cyclic macro references", false},
146 {"macro-defaults", "macros with more default than optional parameters", true},
147 {"orphan-labels", "labels alone on lines without trailing `:'", true},
148 {"number-overflow", "numeric constant does not fit", true},
149 {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
150 {"float-overflow", "floating point overflow", true},
151 {"float-denorm", "floating point denormal", false},
152 {"float-underflow", "floating point underflow", false},
153 {"float-toolong", "too many digits in floating-point number", true},
154 {"user", "%warning directives", true},
155 };
156
157 /*
158 * This is a null preprocessor which just copies lines from input
159 * to output. It's used when someone explicitly requests that NASM
160 * not preprocess their source file.
161 */
162
163 static void no_pp_reset(char *, int, ListGen *, StrList **);
164 static char *no_pp_getline(void);
165 static void no_pp_cleanup(int);
166 static Preproc no_pp = {
167 no_pp_reset,
168 no_pp_getline,
169 no_pp_cleanup
170 };
171
172 /*
173 * get/set current offset...
174 */
175 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
176 raa_read(offsets,location.segment))
177 #define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
178 (void)(offsets=raa_write(offsets,location.segment,(x))))
179
180 static bool want_usage;
181 static bool terminate_after_phase;
182 int user_nolist = 0; /* fbk 9/2/00 */
183
184 static void nasm_fputs(const char *line, FILE * outfile)
185 {
186 if (outfile) {
187 fputs(line, outfile);
188 putc('\n', outfile);
189 } else
190 puts(line);
191 }
192
193 /* Convert a struct tm to a POSIX-style time constant */
194 static int64_t posix_mktime(struct tm *tm)
195 {
196 int64_t t;
197 int64_t y = tm->tm_year;
198
199 /* See IEEE 1003.1:2004, section 4.14 */
200
201 t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
202 t += tm->tm_yday;
203 t *= 24;
204 t += tm->tm_hour;
205 t *= 60;
206 t += tm->tm_min;
207 t *= 60;
208 t += tm->tm_sec;
209
210 return t;
211 }
212
213 static void define_macros_early(void)
214 {
215 char temp[128];
216 struct tm lt, *lt_p, gm, *gm_p;
217 int64_t posix_time;
218
219 lt_p = localtime(&official_compile_time);
220 if (lt_p) {
221 lt = *lt_p;
222
223 strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", &lt);
224 pp_pre_define(temp);
225 strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", &lt);
226 pp_pre_define(temp);
227 strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", &lt);
228 pp_pre_define(temp);
229 strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", &lt);
230 pp_pre_define(temp);
231 }
232
233 gm_p = gmtime(&official_compile_time);
234 if (gm_p) {
235 gm = *gm_p;
236
237 strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
238 pp_pre_define(temp);
239 strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
240 pp_pre_define(temp);
241 strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
242 pp_pre_define(temp);
243 strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
244 pp_pre_define(temp);
245 }
246
247 if (gm_p)
248 posix_time = posix_mktime(&gm);
249 else if (lt_p)
250 posix_time = posix_mktime(&lt);
251 else
252 posix_time = 0;
253
254 if (posix_time) {
255 snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
256 pp_pre_define(temp);
257 }
258 }
259
260 static void define_macros_late(void)
261 {
262 char temp[128];
263
264 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s\n",
265 ofmt->shortname);
266 pp_pre_define(temp);
267 }
268
269 static void emit_dependencies(StrList *list)
270 {
271 FILE *deps;
272 int linepos, len;
273 StrList *l, *nl;
274
275 if (depend_file && strcmp(depend_file, "-")) {
276 deps = fopen(depend_file, "w");
277 if (!deps) {
278 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
279 "unable to write dependency file `%s'", depend_file);
280 return;
281 }
282 } else {
283 deps = stdout;
284 }
285
286 linepos = fprintf(deps, "%s:", depend_target);
287 for (l = list; l; l = l->next) {
288 len = strlen(l->str);
289 if (linepos + len > 62) {
290 fprintf(deps, " \\\n ");
291 linepos = 1;
292 }
293 fprintf(deps, " %s", l->str);
294 linepos += len+1;
295 }
296 fprintf(deps, "\n\n");
297
298 for (l = list; l; l = nl) {
299 if (depend_emit_phony)
300 fprintf(deps, "%s:\n\n", l->str);
301
302 nl = l->next;
303 nasm_free(l);
304 }
305
306 if (deps != stdout)
307 fclose(deps);
308 }
309
310 int main(int argc, char **argv)
311 {
312 StrList *depend_list = NULL, **depend_ptr;
313
314 time(&official_compile_time);
315
316 pass0 = 0;
317 want_usage = terminate_after_phase = false;
318 nasm_set_verror(nasm_verror_gnu);
319
320 error_file = stderr;
321
322 tolower_init();
323
324 nasm_init_malloc_error();
325 offsets = raa_init();
326 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
327
328 preproc = &nasmpp;
329 operating_mode = op_normal;
330
331 seg_init();
332
333 /* Define some macros dependent on the runtime, but not
334 on the command line. */
335 define_macros_early();
336
337 parse_cmdline(argc, argv);
338
339 if (terminate_after_phase) {
340 if (want_usage)
341 usage();
342 return 1;
343 }
344
345 /* If debugging info is disabled, suppress any debug calls */
346 if (!using_debug_info)
347 ofmt->current_dfmt = &null_debug_form;
348
349 if (ofmt->stdmac)
350 pp_extra_stdmac(ofmt->stdmac);
351 parser_global_info(&location);
352 eval_global_info(ofmt, lookup_label, &location);
353
354 /* define some macros dependent of command-line */
355 define_macros_late();
356
357 depend_ptr = (depend_file || (operating_mode == op_depend))
358 ? &depend_list : NULL;
359 if (!depend_target)
360 depend_target = outname;
361
362 switch (operating_mode) {
363 case op_depend:
364 {
365 char *line;
366
367 if (depend_missing_ok)
368 pp_include_path(NULL); /* "assume generated" */
369
370 preproc->reset(inname, 0, &nasmlist, depend_ptr);
371 if (outname[0] == '\0')
372 ofmt->filename(inname, outname);
373 ofile = NULL;
374 while ((line = preproc->getline()))
375 nasm_free(line);
376 preproc->cleanup(0);
377 }
378 break;
379
380 case op_preprocess:
381 {
382 char *line;
383 char *file_name = NULL;
384 int32_t prior_linnum = 0;
385 int lineinc = 0;
386
387 if (*outname) {
388 ofile = fopen(outname, "w");
389 if (!ofile)
390 nasm_error(ERR_FATAL | ERR_NOFILE,
391 "unable to open output file `%s'",
392 outname);
393 } else
394 ofile = NULL;
395
396 location.known = false;
397
398 /* pass = 1; */
399 preproc->reset(inname, 3, &nasmlist, depend_ptr);
400
401 while ((line = preproc->getline())) {
402 /*
403 * We generate %line directives if needed for later programs
404 */
405 int32_t linnum = prior_linnum += lineinc;
406 int altline = src_get(&linnum, &file_name);
407 if (altline) {
408 if (altline == 1 && lineinc == 1)
409 nasm_fputs("", ofile);
410 else {
411 lineinc = (altline != -1 || lineinc != 1);
412 fprintf(ofile ? ofile : stdout,
413 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
414 file_name);
415 }
416 prior_linnum = linnum;
417 }
418 nasm_fputs(line, ofile);
419 nasm_free(line);
420 }
421 nasm_free(file_name);
422 preproc->cleanup(0);
423 if (ofile)
424 fclose(ofile);
425 if (ofile && terminate_after_phase)
426 remove(outname);
427 ofile = NULL;
428 }
429 break;
430
431 case op_normal:
432 {
433 /*
434 * We must call ofmt->filename _anyway_, even if the user
435 * has specified their own output file, because some
436 * formats (eg OBJ and COFF) use ofmt->filename to find out
437 * the name of the input file and then put that inside the
438 * file.
439 */
440 ofmt->filename(inname, outname);
441
442 ofile = fopen(outname, (ofmt->flags & OFMT_TEXT) ? "w" : "wb");
443 if (!ofile) {
444 nasm_error(ERR_FATAL | ERR_NOFILE,
445 "unable to open output file `%s'", outname);
446 }
447
448 /*
449 * We must call init_labels() before ofmt->init() since
450 * some object formats will want to define labels in their
451 * init routines. (eg OS/2 defines the FLAT group)
452 */
453 init_labels();
454
455 ofmt->init();
456 dfmt = ofmt->current_dfmt;
457 dfmt->init();
458
459 assemble_file(inname, depend_ptr);
460
461 if (!terminate_after_phase) {
462 ofmt->cleanup(using_debug_info);
463 cleanup_labels();
464 fflush(ofile);
465 if (ferror(ofile)) {
466 nasm_error(ERR_NONFATAL|ERR_NOFILE,
467 "write error on output file `%s'", outname);
468 }
469 }
470
471 if (ofile) {
472 fclose(ofile);
473 if (terminate_after_phase)
474 remove(outname);
475 ofile = NULL;
476 }
477 }
478 break;
479 }
480
481 if (depend_list && !terminate_after_phase)
482 emit_dependencies(depend_list);
483
484 if (want_usage)
485 usage();
486
487 raa_free(offsets);
488 saa_free(forwrefs);
489 eval_cleanup();
490 stdscan_cleanup();
491
492 return terminate_after_phase;
493 }
494
495 /*
496 * Get a parameter for a command line option.
497 * First arg must be in the form of e.g. -f...
498 */
499 static char *get_param(char *p, char *q, bool *advance)
500 {
501 *advance = false;
502 if (p[2]) { /* the parameter's in the option */
503 p += 2;
504 while (nasm_isspace(*p))
505 p++;
506 return p;
507 }
508 if (q && q[0]) {
509 *advance = true;
510 return q;
511 }
512 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
513 "option `-%c' requires an argument", p[1]);
514 return NULL;
515 }
516
517 /*
518 * Copy a filename
519 */
520 static void copy_filename(char *dst, const char *src)
521 {
522 size_t len = strlen(src);
523
524 if (len >= (size_t)FILENAME_MAX) {
525 nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
526 return;
527 }
528 strncpy(dst, src, FILENAME_MAX);
529 }
530
531 /*
532 * Convert a string to Make-safe form
533 */
534 static char *quote_for_make(const char *str)
535 {
536 const char *p;
537 char *os, *q;
538
539 size_t n = 1; /* Terminating zero */
540 size_t nbs = 0;
541
542 if (!str)
543 return NULL;
544
545 for (p = str; *p; p++) {
546 switch (*p) {
547 case ' ':
548 case '\t':
549 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
550 n += nbs + 2;
551 nbs = 0;
552 break;
553 case '$':
554 case '#':
555 nbs = 0;
556 n += 2;
557 break;
558 case '\\':
559 nbs++;
560 n++;
561 break;
562 default:
563 nbs = 0;
564 n++;
565 break;
566 }
567 }
568
569 /* Convert N backslashes at the end of filename to 2N backslashes */
570 if (nbs)
571 n += nbs;
572
573 os = q = nasm_malloc(n);
574
575 nbs = 0;
576 for (p = str; *p; p++) {
577 switch (*p) {
578 case ' ':
579 case '\t':
580 while (nbs--)
581 *q++ = '\\';
582 *q++ = '\\';
583 *q++ = *p;
584 break;
585 case '$':
586 *q++ = *p;
587 *q++ = *p;
588 nbs = 0;
589 break;
590 case '#':
591 *q++ = '\\';
592 *q++ = *p;
593 nbs = 0;
594 break;
595 case '\\':
596 *q++ = *p;
597 nbs++;
598 break;
599 default:
600 *q++ = *p;
601 nbs = 0;
602 break;
603 }
604 }
605 while (nbs--)
606 *q++ = '\\';
607
608 *q = '\0';
609
610 return os;
611 }
612
613 struct textargs {
614 const char *label;
615 int value;
616 };
617
618 #define OPT_PREFIX 0
619 #define OPT_POSTFIX 1
620 struct textargs textopts[] = {
621 {"prefix", OPT_PREFIX},
622 {"postfix", OPT_POSTFIX},
623 {NULL, 0}
624 };
625
626 static bool stopoptions = false;
627 static bool process_arg(char *p, char *q)
628 {
629 char *param;
630 int i;
631 bool advance = false;
632 bool do_warn;
633
634 if (!p || !p[0])
635 return false;
636
637 if (p[0] == '-' && !stopoptions) {
638 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
639 /* These parameters take values */
640 if (!(param = get_param(p, q, &advance)))
641 return advance;
642 }
643
644 switch (p[1]) {
645 case 's':
646 error_file = stdout;
647 break;
648
649 case 'o': /* output file */
650 copy_filename(outname, param);
651 break;
652
653 case 'f': /* output format */
654 ofmt = ofmt_find(param);
655 if (!ofmt) {
656 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
657 "unrecognised output format `%s' - "
658 "use -hf for a list", param);
659 }
660 break;
661
662 case 'O': /* Optimization level */
663 {
664 int opt;
665
666 if (!*param) {
667 /* Naked -O == -Ox */
668 optimizing = INT_MAX >> 1; /* Almost unlimited */
669 } else {
670 while (*param) {
671 switch (*param) {
672 case '0': case '1': case '2': case '3': case '4':
673 case '5': case '6': case '7': case '8': case '9':
674 opt = strtoul(param, &param, 10);
675
676 /* -O0 -> optimizing == -1, 0.98 behaviour */
677 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
678 if (opt < 2)
679 optimizing = opt - 1;
680 else
681 optimizing = opt;
682 break;
683
684 case 'v':
685 case '+':
686 param++;
687 opt_verbose_info = true;
688 break;
689
690 case 'x':
691 param++;
692 optimizing = INT_MAX >> 1; /* Almost unlimited */
693 break;
694
695 default:
696 nasm_error(ERR_FATAL,
697 "unknown optimization option -O%c\n",
698 *param);
699 break;
700 }
701 }
702 }
703 break;
704 }
705
706 case 'p': /* pre-include */
707 case 'P':
708 pp_pre_include(param);
709 break;
710
711 case 'd': /* pre-define */
712 case 'D':
713 pp_pre_define(param);
714 break;
715
716 case 'u': /* un-define */
717 case 'U':
718 pp_pre_undefine(param);
719 break;
720
721 case 'i': /* include search path */
722 case 'I':
723 pp_include_path(param);
724 break;
725
726 case 'l': /* listing file */
727 copy_filename(listname, param);
728 break;
729
730 case 'Z': /* error messages file */
731 strcpy(errname, param);
732 break;
733
734 case 'F': /* specify debug format */
735 ofmt->current_dfmt = dfmt_find(ofmt, param);
736 if (!ofmt->current_dfmt) {
737 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
738 "unrecognized debug format `%s' for"
739 " output format `%s'",
740 param, ofmt->shortname);
741 }
742 using_debug_info = true;
743 break;
744
745 case 'X': /* specify error reporting format */
746 if (nasm_stricmp("vc", param) == 0)
747 nasm_set_verror(nasm_verror_vc);
748 else if (nasm_stricmp("gnu", param) == 0)
749 nasm_set_verror(nasm_verror_gnu);
750 else
751 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
752 "unrecognized error reporting format `%s'",
753 param);
754 break;
755
756 case 'g':
757 using_debug_info = true;
758 break;
759
760 case 'h':
761 printf
762 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
763 "[-l listfile]\n"
764 " [options...] [--] filename\n"
765 " or nasm -v for version info\n\n"
766 " -t assemble in SciTech TASM compatible mode\n"
767 " -g generate debug information in selected format.\n");
768 printf
769 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
770 " -a don't preprocess (assemble only)\n"
771 " -M generate Makefile dependencies on stdout\n"
772 " -MG d:o, missing files assumed generated\n\n"
773 " -Z<file> redirect error messages to file\n"
774 " -s redirect error messages to stdout\n\n"
775 " -F format select a debugging format\n\n"
776 " -I<path> adds a pathname to the include file path\n");
777 printf
778 (" -O<digit> optimize branch offsets (-O0 disables, default)\n"
779 " -P<file> pre-includes a file\n"
780 " -D<macro>[=<value>] pre-defines a macro\n"
781 " -U<macro> undefines a macro\n"
782 " -X<format> specifies error reporting format (gnu or vc)\n"
783 " -w+foo enables warning foo (equiv. -Wfoo)\n"
784 " -w-foo disable warning foo (equiv. -Wno-foo)\n"
785 "Warnings:\n");
786 for (i = 0; i <= ERR_WARN_MAX; i++)
787 printf(" %-23s %s (default %s)\n",
788 warnings[i].name, warnings[i].help,
789 warnings[i].enabled ? "on" : "off");
790 printf
791 ("\nresponse files should contain command line parameters"
792 ", one per line.\n");
793 if (p[2] == 'f') {
794 printf("\nvalid output formats for -f are"
795 " (`*' denotes default):\n");
796 ofmt_list(ofmt, stdout);
797 } else {
798 printf("\nFor a list of valid output formats, use -hf.\n");
799 printf("For a list of debug formats, use -f <form> -y.\n");
800 }
801 exit(0); /* never need usage message here */
802 break;
803
804 case 'y':
805 printf("\nvalid debug formats for '%s' output format are"
806 " ('*' denotes default):\n", ofmt->shortname);
807 dfmt_list(ofmt, stdout);
808 exit(0);
809 break;
810
811 case 't':
812 tasm_compatible_mode = true;
813 break;
814
815 case 'v':
816 printf("NASM version %s compiled on %s%s\n",
817 nasm_version, nasm_date, nasm_compile_options);
818 exit(0); /* never need usage message here */
819 break;
820
821 case 'e': /* preprocess only */
822 case 'E':
823 operating_mode = op_preprocess;
824 break;
825
826 case 'a': /* assemble only - don't preprocess */
827 preproc = &no_pp;
828 break;
829
830 case 'W':
831 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
832 do_warn = false;
833 param += 3;
834 } else {
835 do_warn = true;
836 }
837 goto set_warning;
838
839 case 'w':
840 if (param[0] != '+' && param[0] != '-') {
841 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
842 "invalid option to `-w'");
843 break;
844 }
845 do_warn = (param[0] == '+');
846 param++;
847 goto set_warning;
848 set_warning:
849 for (i = 0; i <= ERR_WARN_MAX; i++)
850 if (!nasm_stricmp(param, warnings[i].name))
851 break;
852 if (i <= ERR_WARN_MAX)
853 warning_on_global[i] = do_warn;
854 else if (!nasm_stricmp(param, "all"))
855 for (i = 1; i <= ERR_WARN_MAX; i++)
856 warning_on_global[i] = do_warn;
857 else if (!nasm_stricmp(param, "none"))
858 for (i = 1; i <= ERR_WARN_MAX; i++)
859 warning_on_global[i] = !do_warn;
860 else
861 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
862 "invalid warning `%s'", param);
863 break;
864
865 case 'M':
866 switch (p[2]) {
867 case 0:
868 operating_mode = op_depend;
869 break;
870 case 'G':
871 operating_mode = op_depend;
872 depend_missing_ok = true;
873 break;
874 case 'P':
875 depend_emit_phony = true;
876 break;
877 case 'D':
878 depend_file = q;
879 advance = true;
880 break;
881 case 'T':
882 depend_target = q;
883 advance = true;
884 break;
885 case 'Q':
886 depend_target = quote_for_make(q);
887 advance = true;
888 break;
889 default:
890 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
891 "unknown dependency option `-M%c'", p[2]);
892 break;
893 }
894 if (advance && (!q || !q[0])) {
895 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
896 "option `-M%c' requires a parameter", p[2]);
897 break;
898 }
899 break;
900
901 case '-':
902 {
903 int s;
904
905 if (p[2] == 0) { /* -- => stop processing options */
906 stopoptions = 1;
907 break;
908 }
909 for (s = 0; textopts[s].label; s++) {
910 if (!nasm_stricmp(p + 2, textopts[s].label)) {
911 break;
912 }
913 }
914
915 switch (s) {
916
917 case OPT_PREFIX:
918 case OPT_POSTFIX:
919 {
920 if (!q) {
921 nasm_error(ERR_NONFATAL | ERR_NOFILE |
922 ERR_USAGE,
923 "option `--%s' requires an argument",
924 p + 2);
925 break;
926 } else {
927 advance = 1, param = q;
928 }
929
930 if (s == OPT_PREFIX) {
931 strncpy(lprefix, param, PREFIX_MAX - 1);
932 lprefix[PREFIX_MAX - 1] = 0;
933 break;
934 }
935 if (s == OPT_POSTFIX) {
936 strncpy(lpostfix, param, POSTFIX_MAX - 1);
937 lpostfix[POSTFIX_MAX - 1] = 0;
938 break;
939 }
940 break;
941 }
942 default:
943 {
944 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
945 "unrecognised option `--%s'", p + 2);
946 break;
947 }
948 }
949 break;
950 }
951
952 default:
953 if (!ofmt->setinfo(GI_SWITCH, &p))
954 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
955 "unrecognised option `-%c'", p[1]);
956 break;
957 }
958 } else {
959 if (*inname) {
960 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
961 "more than one input file specified");
962 } else {
963 copy_filename(inname, p);
964 }
965 }
966
967 return advance;
968 }
969
970 #define ARG_BUF_DELTA 128
971
972 static void process_respfile(FILE * rfile)
973 {
974 char *buffer, *p, *q, *prevarg;
975 int bufsize, prevargsize;
976
977 bufsize = prevargsize = ARG_BUF_DELTA;
978 buffer = nasm_malloc(ARG_BUF_DELTA);
979 prevarg = nasm_malloc(ARG_BUF_DELTA);
980 prevarg[0] = '\0';
981
982 while (1) { /* Loop to handle all lines in file */
983 p = buffer;
984 while (1) { /* Loop to handle long lines */
985 q = fgets(p, bufsize - (p - buffer), rfile);
986 if (!q)
987 break;
988 p += strlen(p);
989 if (p > buffer && p[-1] == '\n')
990 break;
991 if (p - buffer > bufsize - 10) {
992 int offset;
993 offset = p - buffer;
994 bufsize += ARG_BUF_DELTA;
995 buffer = nasm_realloc(buffer, bufsize);
996 p = buffer + offset;
997 }
998 }
999
1000 if (!q && p == buffer) {
1001 if (prevarg[0])
1002 process_arg(prevarg, NULL);
1003 nasm_free(buffer);
1004 nasm_free(prevarg);
1005 return;
1006 }
1007
1008 /*
1009 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1010 * them are present at the end of the line.
1011 */
1012 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
1013
1014 while (p > buffer && nasm_isspace(p[-1]))
1015 *--p = '\0';
1016
1017 p = buffer;
1018 while (nasm_isspace(*p))
1019 p++;
1020
1021 if (process_arg(prevarg, p))
1022 *p = '\0';
1023
1024 if ((int) strlen(p) > prevargsize - 10) {
1025 prevargsize += ARG_BUF_DELTA;
1026 prevarg = nasm_realloc(prevarg, prevargsize);
1027 }
1028 strncpy(prevarg, p, prevargsize);
1029 }
1030 }
1031
1032 /* Function to process args from a string of args, rather than the
1033 * argv array. Used by the environment variable and response file
1034 * processing.
1035 */
1036 static void process_args(char *args)
1037 {
1038 char *p, *q, *arg, *prevarg;
1039 char separator = ' ';
1040
1041 p = args;
1042 if (*p && *p != '-')
1043 separator = *p++;
1044 arg = NULL;
1045 while (*p) {
1046 q = p;
1047 while (*p && *p != separator)
1048 p++;
1049 while (*p == separator)
1050 *p++ = '\0';
1051 prevarg = arg;
1052 arg = q;
1053 if (process_arg(prevarg, arg))
1054 arg = NULL;
1055 }
1056 if (arg)
1057 process_arg(arg, NULL);
1058 }
1059
1060 static void process_response_file(const char *file)
1061 {
1062 char str[2048];
1063 FILE *f = fopen(file, "r");
1064 if (!f) {
1065 perror(file);
1066 exit(-1);
1067 }
1068 while (fgets(str, sizeof str, f)) {
1069 process_args(str);
1070 }
1071 fclose(f);
1072 }
1073
1074 static void parse_cmdline(int argc, char **argv)
1075 {
1076 FILE *rfile;
1077 char *envreal, *envcopy = NULL, *p, *arg;
1078 int i;
1079
1080 *inname = *outname = *listname = *errname = '\0';
1081 for (i = 0; i <= ERR_WARN_MAX; i++)
1082 warning_on_global[i] = warnings[i].enabled;
1083
1084 /*
1085 * First, process the NASMENV environment variable.
1086 */
1087 envreal = getenv("NASMENV");
1088 arg = NULL;
1089 if (envreal) {
1090 envcopy = nasm_strdup(envreal);
1091 process_args(envcopy);
1092 nasm_free(envcopy);
1093 }
1094
1095 /*
1096 * Now process the actual command line.
1097 */
1098 while (--argc) {
1099 bool advance;
1100 argv++;
1101 if (argv[0][0] == '@') {
1102 /* We have a response file, so process this as a set of
1103 * arguments like the environment variable. This allows us
1104 * to have multiple arguments on a single line, which is
1105 * different to the -@resp file processing below for regular
1106 * NASM.
1107 */
1108 process_response_file(argv[0]+1);
1109 argc--;
1110 argv++;
1111 }
1112 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1113 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1114 if (p) {
1115 rfile = fopen(p, "r");
1116 if (rfile) {
1117 process_respfile(rfile);
1118 fclose(rfile);
1119 } else
1120 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1121 "unable to open response file `%s'", p);
1122 }
1123 } else
1124 advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1125 argv += advance, argc -= advance;
1126 }
1127
1128 /* Look for basic command line typos. This definitely doesn't
1129 catch all errors, but it might help cases of fumbled fingers. */
1130 if (!*inname)
1131 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1132 "no input file specified");
1133 else if (!strcmp(inname, errname) ||
1134 !strcmp(inname, outname) ||
1135 !strcmp(inname, listname) ||
1136 (depend_file && !strcmp(inname, depend_file)))
1137 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1138 "file `%s' is both input and output file",
1139 inname);
1140
1141 if (*errname) {
1142 error_file = fopen(errname, "w");
1143 if (!error_file) {
1144 error_file = stderr; /* Revert to default! */
1145 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1146 "cannot open file `%s' for error messages",
1147 errname);
1148 }
1149 }
1150 }
1151
1152 static enum directives getkw(char **directive, char **value);
1153
1154 static void assemble_file(char *fname, StrList **depend_ptr)
1155 {
1156 char *directive, *value, *p, *q, *special, *line, debugid[80];
1157 insn output_ins;
1158 int i, validid;
1159 bool rn_error;
1160 int32_t seg;
1161 int64_t offs;
1162 struct tokenval tokval;
1163 expr *e;
1164 int pass_max;
1165
1166 if (cmd_sb == 32 && cmd_cpu < IF_386)
1167 nasm_error(ERR_FATAL, "command line: "
1168 "32-bit segment size requires a higher cpu");
1169
1170 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1171 for (passn = 1; pass0 <= 2; passn++) {
1172 int pass1, pass2;
1173 ldfunc def_label;
1174
1175 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1176 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1177 /* pass0 0, 0, 0, ..., 1, 2 */
1178
1179 def_label = passn > 1 ? redefine_label : define_label;
1180
1181 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1182 cpu = cmd_cpu;
1183 if (pass0 == 2) {
1184 if (*listname)
1185 nasmlist.init(listname, nasm_error);
1186 }
1187 in_abs_seg = false;
1188 global_offset_changed = 0; /* set by redefine_label */
1189 location.segment = ofmt->section(NULL, pass2, &sb);
1190 globalbits = sb;
1191 if (passn > 1) {
1192 saa_rewind(forwrefs);
1193 forwref = saa_rstruct(forwrefs);
1194 raa_free(offsets);
1195 offsets = raa_init();
1196 }
1197 preproc->reset(fname, pass1, &nasmlist,
1198 pass1 == 2 ? depend_ptr : NULL);
1199 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1200
1201 globallineno = 0;
1202 if (passn == 1)
1203 location.known = true;
1204 location.offset = offs = GET_CURR_OFFS;
1205
1206 while ((line = preproc->getline())) {
1207 enum directives d;
1208 globallineno++;
1209
1210 /*
1211 * Here we parse our directives; this is not handled by the
1212 * 'real' parser. This really should be a separate function.
1213 */
1214 directive = line;
1215 d = getkw(&directive, &value);
1216 if (d) {
1217 int err = 0;
1218
1219 switch (d) {
1220 case D_SEGMENT: /* [SEGMENT n] */
1221 case D_SECTION:
1222 seg = ofmt->section(value, pass2, &sb);
1223 if (seg == NO_SEG) {
1224 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1225 "segment name `%s' not recognized",
1226 value);
1227 } else {
1228 in_abs_seg = false;
1229 location.segment = seg;
1230 }
1231 break;
1232 case D_EXTERN: /* [EXTERN label:special] */
1233 if (*value == '$')
1234 value++; /* skip initial $ if present */
1235 if (pass0 == 2) {
1236 q = value;
1237 while (*q && *q != ':')
1238 q++;
1239 if (*q == ':') {
1240 *q++ = '\0';
1241 ofmt->symdef(value, 0L, 0L, 3, q);
1242 }
1243 } else if (passn == 1) {
1244 q = value;
1245 validid = true;
1246 if (!isidstart(*q))
1247 validid = false;
1248 while (*q && *q != ':') {
1249 if (!isidchar(*q))
1250 validid = false;
1251 q++;
1252 }
1253 if (!validid) {
1254 nasm_error(ERR_NONFATAL,
1255 "identifier expected after EXTERN");
1256 break;
1257 }
1258 if (*q == ':') {
1259 *q++ = '\0';
1260 special = q;
1261 } else
1262 special = NULL;
1263 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1264 int temp = pass0;
1265 pass0 = 1; /* fake pass 1 in labels.c */
1266 declare_as_global(value, special);
1267 define_label(value, seg_alloc(), 0L, NULL,
1268 false, true);
1269 pass0 = temp;
1270 }
1271 } /* else pass0 == 1 */
1272 break;
1273 case D_BITS: /* [BITS bits] */
1274 globalbits = sb = get_bits(value);
1275 break;
1276 case D_GLOBAL: /* [GLOBAL symbol:special] */
1277 if (*value == '$')
1278 value++; /* skip initial $ if present */
1279 if (pass0 == 2) { /* pass 2 */
1280 q = value;
1281 while (*q && *q != ':')
1282 q++;
1283 if (*q == ':') {
1284 *q++ = '\0';
1285 ofmt->symdef(value, 0L, 0L, 3, q);
1286 }
1287 } else if (pass2 == 1) { /* pass == 1 */
1288 q = value;
1289 validid = true;
1290 if (!isidstart(*q))
1291 validid = false;
1292 while (*q && *q != ':') {
1293 if (!isidchar(*q))
1294 validid = false;
1295 q++;
1296 }
1297 if (!validid) {
1298 nasm_error(ERR_NONFATAL,
1299 "identifier expected after GLOBAL");
1300 break;
1301 }
1302 if (*q == ':') {
1303 *q++ = '\0';
1304 special = q;
1305 } else
1306 special = NULL;
1307 declare_as_global(value, special);
1308 } /* pass == 1 */
1309 break;
1310 case D_COMMON: /* [COMMON symbol size:special] */
1311 {
1312 int64_t size;
1313
1314 if (*value == '$')
1315 value++; /* skip initial $ if present */
1316 p = value;
1317 validid = true;
1318 if (!isidstart(*p))
1319 validid = false;
1320 while (*p && !nasm_isspace(*p)) {
1321 if (!isidchar(*p))
1322 validid = false;
1323 p++;
1324 }
1325 if (!validid) {
1326 nasm_error(ERR_NONFATAL,
1327 "identifier expected after COMMON");
1328 break;
1329 }
1330 if (*p) {
1331 while (*p && nasm_isspace(*p))
1332 *p++ = '\0';
1333 q = p;
1334 while (*q && *q != ':')
1335 q++;
1336 if (*q == ':') {
1337 *q++ = '\0';
1338 special = q;
1339 } else {
1340 special = NULL;
1341 }
1342 size = readnum(p, &rn_error);
1343 if (rn_error) {
1344 nasm_error(ERR_NONFATAL,
1345 "invalid size specified"
1346 " in COMMON declaration");
1347 break;
1348 }
1349 } else {
1350 nasm_error(ERR_NONFATAL,
1351 "no size specified in"
1352 " COMMON declaration");
1353 break;
1354 }
1355
1356 if (pass0 < 2) {
1357 define_common(value, seg_alloc(), size, special);
1358 } else if (pass0 == 2) {
1359 if (special)
1360 ofmt->symdef(value, 0L, 0L, 3, special);
1361 }
1362 break;
1363 }
1364 case D_ABSOLUTE: /* [ABSOLUTE address] */
1365 stdscan_reset();
1366 stdscan_bufptr = value;
1367 tokval.t_type = TOKEN_INVALID;
1368 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1369 nasm_error, NULL);
1370 if (e) {
1371 if (!is_reloc(e))
1372 nasm_error(pass0 ==
1373 1 ? ERR_NONFATAL : ERR_PANIC,
1374 "cannot use non-relocatable expression as "
1375 "ABSOLUTE address");
1376 else {
1377 abs_seg = reloc_seg(e);
1378 abs_offset = reloc_value(e);
1379 }
1380 } else if (passn == 1)
1381 abs_offset = 0x100; /* don't go near zero in case of / */
1382 else
1383 nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
1384 "in pass two");
1385 in_abs_seg = true;
1386 location.segment = NO_SEG;
1387 break;
1388 case D_DEBUG: /* [DEBUG] */
1389 p = value;
1390 q = debugid;
1391 validid = true;
1392 if (!isidstart(*p))
1393 validid = false;
1394 while (*p && !nasm_isspace(*p)) {
1395 if (!isidchar(*p))
1396 validid = false;
1397 *q++ = *p++;
1398 }
1399 *q++ = 0;
1400 if (!validid) {
1401 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1402 "identifier expected after DEBUG");
1403 break;
1404 }
1405 while (*p && nasm_isspace(*p))
1406 p++;
1407 if (pass0 == 2)
1408 dfmt->debug_directive(debugid, p);
1409 break;
1410 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1411 while (*value && nasm_isspace(*value))
1412 value++;
1413
1414 switch(*value) {
1415 case '-': validid = 0; value++; break;
1416 case '+': validid = 1; value++; break;
1417 case '*': validid = 2; value++; break;
1418 default: validid = 1; break;
1419 }
1420
1421 for (i = 1; i <= ERR_WARN_MAX; i++)
1422 if (!nasm_stricmp(value, warnings[i].name))
1423 break;
1424 if (i <= ERR_WARN_MAX) {
1425 switch(validid) {
1426 case 0:
1427 warning_on[i] = false;
1428 break;
1429 case 1:
1430 warning_on[i] = true;
1431 break;
1432 case 2:
1433 warning_on[i] = warning_on_global[i];
1434 break;
1435 }
1436 }
1437 else
1438 nasm_error(ERR_NONFATAL,
1439 "invalid warning id in WARNING directive");
1440 break;
1441 case D_CPU: /* [CPU] */
1442 cpu = get_cpu(value);
1443 break;
1444 case D_LIST: /* [LIST {+|-}] */
1445 while (*value && nasm_isspace(*value))
1446 value++;
1447
1448 if (*value == '+') {
1449 user_nolist = 0;
1450 } else {
1451 if (*value == '-') {
1452 user_nolist = 1;
1453 } else {
1454 err = 1;
1455 }
1456 }
1457 break;
1458 case D_DEFAULT: /* [DEFAULT] */
1459 stdscan_reset();
1460 stdscan_bufptr = value;
1461 tokval.t_type = TOKEN_INVALID;
1462 if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1463 switch ((int)tokval.t_integer) {
1464 case S_REL:
1465 globalrel = 1;
1466 break;
1467 case S_ABS:
1468 globalrel = 0;
1469 break;
1470 default:
1471 err = 1;
1472 break;
1473 }
1474 } else {
1475 err = 1;
1476 }
1477 break;
1478 case D_FLOAT:
1479 if (float_option(value)) {
1480 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1481 "unknown 'float' directive: %s",
1482 value);
1483 }
1484 break;
1485 default:
1486 if (!d || !ofmt->directive(d, value, pass2))
1487 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1488 "unrecognised directive [%s]",
1489 directive);
1490 break;
1491 }
1492 if (err) {
1493 nasm_error(ERR_NONFATAL,
1494 "invalid parameter to [%s] directive",
1495 directive);
1496 }
1497 } else { /* it isn't a directive */
1498 parse_line(pass1, line, &output_ins, def_label);
1499
1500 if (optimizing > 0) {
1501 if (forwref != NULL && globallineno == forwref->lineno) {
1502 output_ins.forw_ref = true;
1503 do {
1504 output_ins.oprs[forwref->operand].opflags |=
1505 OPFLAG_FORWARD;
1506 forwref = saa_rstruct(forwrefs);
1507 } while (forwref != NULL
1508 && forwref->lineno == globallineno);
1509 } else
1510 output_ins.forw_ref = false;
1511
1512 if (output_ins.forw_ref) {
1513 if (passn == 1) {
1514 for (i = 0; i < output_ins.operands; i++) {
1515 if (output_ins.oprs[i].
1516 opflags & OPFLAG_FORWARD) {
1517 struct forwrefinfo *fwinf =
1518 (struct forwrefinfo *)
1519 saa_wstruct(forwrefs);
1520 fwinf->lineno = globallineno;
1521 fwinf->operand = i;
1522 }
1523 }
1524 }
1525 }
1526 }
1527
1528 /* forw_ref */
1529 if (output_ins.opcode == I_EQU) {
1530 if (pass1 == 1) {
1531 /*
1532 * Special `..' EQUs get processed in pass two,
1533 * except `..@' macro-processor EQUs which are done
1534 * in the normal place.
1535 */
1536 if (!output_ins.label)
1537 nasm_error(ERR_NONFATAL,
1538 "EQU not preceded by label");
1539
1540 else if (output_ins.label[0] != '.' ||
1541 output_ins.label[1] != '.' ||
1542 output_ins.label[2] == '@') {
1543 if (output_ins.operands == 1 &&
1544 (output_ins.oprs[0].type & IMMEDIATE) &&
1545 output_ins.oprs[0].wrt == NO_SEG) {
1546 bool isext = !!(output_ins.oprs[0].opflags
1547 & OPFLAG_EXTERN);
1548 def_label(output_ins.label,
1549 output_ins.oprs[0].segment,
1550 output_ins.oprs[0].offset, NULL,
1551 false, isext);
1552 } else if (output_ins.operands == 2
1553 && (output_ins.oprs[0].type & IMMEDIATE)
1554 && (output_ins.oprs[0].type & COLON)
1555 && output_ins.oprs[0].segment == NO_SEG
1556 && output_ins.oprs[0].wrt == NO_SEG
1557 && (output_ins.oprs[1].type & IMMEDIATE)
1558 && output_ins.oprs[1].segment == NO_SEG
1559 && output_ins.oprs[1].wrt == NO_SEG) {
1560 def_label(output_ins.label,
1561 output_ins.oprs[0].offset | SEG_ABS,
1562 output_ins.oprs[1].offset,
1563 NULL, false, false);
1564 } else
1565 nasm_error(ERR_NONFATAL,
1566 "bad syntax for EQU");
1567 }
1568 } else {
1569 /*
1570 * Special `..' EQUs get processed here, except
1571 * `..@' macro processor EQUs which are done above.
1572 */
1573 if (output_ins.label[0] == '.' &&
1574 output_ins.label[1] == '.' &&
1575 output_ins.label[2] != '@') {
1576 if (output_ins.operands == 1 &&
1577 (output_ins.oprs[0].type & IMMEDIATE)) {
1578 define_label(output_ins.label,
1579 output_ins.oprs[0].segment,
1580 output_ins.oprs[0].offset,
1581 NULL, false, false);
1582 } else if (output_ins.operands == 2
1583 && (output_ins.oprs[0].
1584 type & IMMEDIATE)
1585 && (output_ins.oprs[0].type & COLON)
1586 && output_ins.oprs[0].segment ==
1587 NO_SEG
1588 && (output_ins.oprs[1].
1589 type & IMMEDIATE)
1590 && output_ins.oprs[1].segment ==
1591 NO_SEG) {
1592 define_label(output_ins.label,
1593 output_ins.oprs[0].
1594 offset | SEG_ABS,
1595 output_ins.oprs[1].offset,
1596 NULL, false, false);
1597 } else
1598 nasm_error(ERR_NONFATAL,
1599 "bad syntax for EQU");
1600 }
1601 }
1602 } else { /* instruction isn't an EQU */
1603
1604 if (pass1 == 1) {
1605
1606 int64_t l = insn_size(location.segment, offs, sb, cpu,
1607 &output_ins, nasm_error);
1608
1609 /* if (using_debug_info) && output_ins.opcode != -1) */
1610 if (using_debug_info)
1611 { /* fbk 03/25/01 */
1612 /* this is done here so we can do debug type info */
1613 int32_t typeinfo =
1614 TYS_ELEMENTS(output_ins.operands);
1615 switch (output_ins.opcode) {
1616 case I_RESB:
1617 typeinfo =
1618 TYS_ELEMENTS(output_ins.oprs[0].
1619 offset) | TY_BYTE;
1620 break;
1621 case I_RESW:
1622 typeinfo =
1623 TYS_ELEMENTS(output_ins.oprs[0].
1624 offset) | TY_WORD;
1625 break;
1626 case I_RESD:
1627 typeinfo =
1628 TYS_ELEMENTS(output_ins.oprs[0].
1629 offset) | TY_DWORD;
1630 break;
1631 case I_RESQ:
1632 typeinfo =
1633 TYS_ELEMENTS(output_ins.oprs[0].
1634 offset) | TY_QWORD;
1635 break;
1636 case I_REST:
1637 typeinfo =
1638 TYS_ELEMENTS(output_ins.oprs[0].
1639 offset) | TY_TBYTE;
1640 break;
1641 case I_RESO:
1642 typeinfo =
1643 TYS_ELEMENTS(output_ins.oprs[0].
1644 offset) | TY_OWORD;
1645 break;
1646 case I_RESY:
1647 typeinfo =
1648 TYS_ELEMENTS(output_ins.oprs[0].
1649 offset) | TY_YWORD;
1650 break;
1651 case I_DB:
1652 typeinfo |= TY_BYTE;
1653 break;
1654 case I_DW:
1655 typeinfo |= TY_WORD;
1656 break;
1657 case I_DD:
1658 if (output_ins.eops_float)
1659 typeinfo |= TY_FLOAT;
1660 else
1661 typeinfo |= TY_DWORD;
1662 break;
1663 case I_DQ:
1664 typeinfo |= TY_QWORD;
1665 break;
1666 case I_DT:
1667 typeinfo |= TY_TBYTE;
1668 break;
1669 case I_DO:
1670 typeinfo |= TY_OWORD;
1671 break;
1672 case I_DY:
1673 typeinfo |= TY_YWORD;
1674 break;
1675 default:
1676 typeinfo = TY_LABEL;
1677
1678 }
1679
1680 dfmt->debug_typevalue(typeinfo);
1681 }
1682 if (l != -1) {
1683 offs += l;
1684 SET_CURR_OFFS(offs);
1685 }
1686 /*
1687 * else l == -1 => invalid instruction, which will be
1688 * flagged as an error on pass 2
1689 */
1690
1691 } else {
1692 offs += assemble(location.segment, offs, sb, cpu,
1693 &output_ins, ofmt, nasm_error,
1694 &nasmlist);
1695 SET_CURR_OFFS(offs);
1696
1697 }
1698 } /* not an EQU */
1699 cleanup_insn(&output_ins);
1700 }
1701 nasm_free(line);
1702 location.offset = offs = GET_CURR_OFFS;
1703 } /* end while (line = preproc->getline... */
1704
1705 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1706 nasm_error(ERR_NONFATAL,
1707 "phase error detected at end of assembly.");
1708
1709 if (pass1 == 1)
1710 preproc->cleanup(1);
1711
1712 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1713 pass0++;
1714 } else if (global_offset_changed &&
1715 global_offset_changed < prev_offset_changed) {
1716 prev_offset_changed = global_offset_changed;
1717 stall_count = 0;
1718 } else {
1719 stall_count++;
1720 }
1721
1722 if (terminate_after_phase)
1723 break;
1724
1725 if ((stall_count > 997) || (passn >= pass_max)) {
1726 /* We get here if the labels don't converge
1727 * Example: FOO equ FOO + 1
1728 */
1729 nasm_error(ERR_NONFATAL,
1730 "Can't find valid values for all labels "
1731 "after %d passes, giving up.", passn);
1732 nasm_error(ERR_NONFATAL,
1733 "Possible causes: recursive EQUs, macro abuse.");
1734 break;
1735 }
1736 }
1737
1738 preproc->cleanup(0);
1739 nasmlist.cleanup();
1740 if (!terminate_after_phase && opt_verbose_info) {
1741 /* -On and -Ov switches */
1742 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1743 }
1744 }
1745
1746 static enum directives getkw(char **directive, char **value)
1747 {
1748 char *p, *q, *buf;
1749
1750 buf = *directive;
1751
1752 /* allow leading spaces or tabs */
1753 while (*buf == ' ' || *buf == '\t')
1754 buf++;
1755
1756 if (*buf != '[')
1757 return 0;
1758
1759 p = buf;
1760
1761 while (*p && *p != ']')
1762 p++;
1763
1764 if (!*p)
1765 return 0;
1766
1767 q = p++;
1768
1769 while (*p && *p != ';') {
1770 if (!nasm_isspace(*p))
1771 return 0;
1772 p++;
1773 }
1774 q[1] = '\0';
1775
1776 *directive = p = buf + 1;
1777 while (*buf && *buf != ' ' && *buf != ']' && *buf != '\t')
1778 buf++;
1779 if (*buf == ']') {
1780 *buf = '\0';
1781 *value = buf;
1782 } else {
1783 *buf++ = '\0';
1784 while (nasm_isspace(*buf))
1785 buf++; /* beppu - skip leading whitespace */
1786 *value = buf;
1787 while (*buf != ']')
1788 buf++;
1789 *buf++ = '\0';
1790 }
1791
1792 return find_directive(*directive);
1793 }
1794
1795 /**
1796 * gnu style error reporting
1797 * This function prints an error message to error_file in the
1798 * style used by GNU. An example would be:
1799 * file.asm:50: error: blah blah blah
1800 * where file.asm is the name of the file, 50 is the line number on
1801 * which the error occurs (or is detected) and "error:" is one of
1802 * the possible optional diagnostics -- it can be "error" or "warning"
1803 * or something else. Finally the line terminates with the actual
1804 * error message.
1805 *
1806 * @param severity the severity of the warning or error
1807 * @param fmt the printf style format string
1808 */
1809 static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
1810 {
1811 char *currentfile = NULL;
1812 int32_t lineno = 0;
1813
1814 if (is_suppressed_warning(severity))
1815 return;
1816
1817 if (!(severity & ERR_NOFILE))
1818 src_get(&lineno, &currentfile);
1819
1820 if (currentfile) {
1821 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1822 nasm_free(currentfile);
1823 } else {
1824 fputs("nasm: ", error_file);
1825 }
1826
1827 nasm_verror_common(severity, fmt, ap);
1828 }
1829
1830 /**
1831 * MS style error reporting
1832 * This function prints an error message to error_file in the
1833 * style used by Visual C and some other Microsoft tools. An example
1834 * 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_vc(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 * check for supressed warning
1868 * checks for suppressed warning or pass one only warning and we're
1869 * not in pass 1
1870 *
1871 * @param severity the severity of the warning or error
1872 * @return true if we should abort error/warning printing
1873 */
1874 static bool is_suppressed_warning(int severity)
1875 {
1876 /*
1877 * See if it's a suppressed warning.
1878 */
1879 return (severity & ERR_MASK) == ERR_WARNING &&
1880 (((severity & ERR_WARN_MASK) != 0 &&
1881 !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1882 /* See if it's a pass-one only warning and we're not in pass one. */
1883 ((severity & ERR_PASS1) && pass0 != 1) ||
1884 ((severity & ERR_PASS2) && pass0 != 2));
1885 }
1886
1887 /**
1888 * common error reporting
1889 * This is the common back end of the error reporting schemes currently
1890 * implemented. It prints the nature of the warning and then the
1891 * specific error message to error_file and may or may not return. It
1892 * doesn't return if the error severity is a "panic" or "debug" type.
1893 *
1894 * @param severity the severity of the warning or error
1895 * @param fmt the printf style format string
1896 */
1897 static void nasm_verror_common(int severity, const char *fmt, va_list args)
1898 {
1899 char msg[1024];
1900 const char *pfx;
1901
1902 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1903 case ERR_WARNING:
1904 pfx = "warning: ";
1905 break;
1906 case ERR_NONFATAL:
1907 pfx = "error: ";
1908 break;
1909 case ERR_FATAL:
1910 pfx = "fatal: ";
1911 break;
1912 case ERR_PANIC:
1913 pfx = "panic: ";
1914 break;
1915 case ERR_DEBUG:
1916 pfx = "debug: ";
1917 break;
1918 default:
1919 pfx = "";
1920 break;
1921 }
1922
1923 vsnprintf(msg, sizeof msg, fmt, args);
1924
1925 fprintf(error_file, "%s%s\n", pfx, msg);
1926
1927 if (*listname)
1928 nasmlist.error(severity, pfx, msg);
1929
1930 if (severity & ERR_USAGE)
1931 want_usage = true;
1932
1933 switch (severity & ERR_MASK) {
1934 case ERR_DEBUG:
1935 /* no further action, by definition */
1936 break;
1937 case ERR_WARNING:
1938 if (warning_on[0]) /* Treat warnings as errors */
1939 terminate_after_phase = true;
1940 break;
1941 case ERR_NONFATAL:
1942 terminate_after_phase = true;
1943 break;
1944 case ERR_FATAL:
1945 if (ofile) {
1946 fclose(ofile);
1947 remove(outname);
1948 ofile = NULL;
1949 }
1950 if (want_usage)
1951 usage();
1952 exit(1); /* instantly die */
1953 break; /* placate silly compilers */
1954 case ERR_PANIC:
1955 fflush(NULL);
1956 /* abort(); *//* halt, catch fire, and dump core */
1957 exit(3);
1958 break;
1959 }
1960 }
1961
1962 static void usage(void)
1963 {
1964 fputs("type `nasm -h' for help\n", error_file);
1965 }
1966
1967 #define BUF_DELTA 512
1968
1969 static FILE *no_pp_fp;
1970 static ListGen *no_pp_list;
1971 static int32_t no_pp_lineinc;
1972
1973 static void no_pp_reset(char *file, int pass, ListGen * listgen,
1974 StrList **deplist)
1975 {
1976 src_set_fname(nasm_strdup(file));
1977 src_set_linnum(0);
1978 no_pp_lineinc = 1;
1979 no_pp_fp = fopen(file, "r");
1980 if (!no_pp_fp)
1981 nasm_error(ERR_FATAL | ERR_NOFILE,
1982 "unable to open input file `%s'", file);
1983 no_pp_list = listgen;
1984 (void)pass; /* placate compilers */
1985
1986 if (deplist) {
1987 StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
1988 sl->next = NULL;
1989 strcpy(sl->str, file);
1990 *deplist = sl;
1991 }
1992 }
1993
1994 static char *no_pp_getline(void)
1995 {
1996 char *buffer, *p, *q;
1997 int bufsize;
1998
1999 bufsize = BUF_DELTA;
2000 buffer = nasm_malloc(BUF_DELTA);
2001 src_set_linnum(src_get_linnum() + no_pp_lineinc);
2002
2003 while (1) { /* Loop to handle %line */
2004
2005 p = buffer;
2006 while (1) { /* Loop to handle long lines */
2007 q = fgets(p, bufsize - (p - buffer), no_pp_fp);
2008 if (!q)
2009 break;
2010 p += strlen(p);
2011 if (p > buffer && p[-1] == '\n')
2012 break;
2013 if (p - buffer > bufsize - 10) {
2014 int offset;
2015 offset = p - buffer;
2016 bufsize += BUF_DELTA;
2017 buffer = nasm_realloc(buffer, bufsize);
2018 p = buffer + offset;
2019 }
2020 }
2021
2022 if (!q && p == buffer) {
2023 nasm_free(buffer);
2024 return NULL;
2025 }
2026
2027 /*
2028 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
2029 * them are present at the end of the line.
2030 */
2031 buffer[strcspn(buffer, "\r\n\032")] = '\0';
2032
2033 if (!nasm_strnicmp(buffer, "%line", 5)) {
2034 int32_t ln;
2035 int li;
2036 char *nm = nasm_malloc(strlen(buffer));
2037 if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
2038 nasm_free(src_set_fname(nm));
2039 src_set_linnum(ln);
2040 no_pp_lineinc = li;
2041 continue;
2042 }
2043 nasm_free(nm);
2044 }
2045 break;
2046 }
2047
2048 no_pp_list->line(LIST_READ, buffer);
2049
2050 return buffer;
2051 }
2052
2053 static void no_pp_cleanup(int pass)
2054 {
2055 (void)pass; /* placate GCC */
2056 fclose(no_pp_fp);
2057 }
2058
2059 static uint32_t get_cpu(char *value)
2060 {
2061 if (!strcmp(value, "8086"))
2062 return IF_8086;
2063 if (!strcmp(value, "186"))
2064 return IF_186;
2065 if (!strcmp(value, "286"))
2066 return IF_286;
2067 if (!strcmp(value, "386"))
2068 return IF_386;
2069 if (!strcmp(value, "486"))
2070 return IF_486;
2071 if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2072 return IF_PENT;
2073 if (!strcmp(value, "686") ||
2074 !nasm_stricmp(value, "ppro") ||
2075 !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2076 return IF_P6;
2077 if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2078 return IF_KATMAI;
2079 if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2080 !nasm_stricmp(value, "willamette"))
2081 return IF_WILLAMETTE;
2082 if (!nasm_stricmp(value, "prescott"))
2083 return IF_PRESCOTT;
2084 if (!nasm_stricmp(value, "x64") ||
2085 !nasm_stricmp(value, "x86-64"))
2086 return IF_X86_64;
2087 if (!nasm_stricmp(value, "ia64") ||
2088 !nasm_stricmp(value, "ia-64") ||
2089 !nasm_stricmp(value, "itanium") ||
2090 !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2091 return IF_IA64;
2092
2093 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2094 "unknown 'cpu' type");
2095
2096 return IF_PLEVEL; /* the maximum level */
2097 }
2098
2099 static int get_bits(char *value)
2100 {
2101 int i;
2102
2103 if ((i = atoi(value)) == 16)
2104 return i; /* set for a 16-bit segment */
2105 else if (i == 32) {
2106 if (cpu < IF_386) {
2107 nasm_error(ERR_NONFATAL,
2108 "cannot specify 32-bit segment on processor below a 386");
2109 i = 16;
2110 }
2111 } else if (i == 64) {
2112 if (cpu < IF_X86_64) {
2113 nasm_error(ERR_NONFATAL,
2114 "cannot specify 64-bit segment on processor below an x86-64");
2115 i = 16;
2116 }
2117 if (i != maxbits) {
2118 nasm_error(ERR_NONFATAL,
2119 "%s output format does not support 64-bit code",
2120 ofmt->shortname);
2121 i = 16;
2122 }
2123 } else {
2124 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2125 "`%s' is not a valid segment size; must be 16, 32 or 64",
2126 value);
2127 i = 16;
2128 }
2129 return i;
2130 }
2131
2132 /* end of nasm.c */
The Netwide Assembler