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Introduce SEGALIGN directive
[nasm/nasm.git] / nasm.c
blobafd9ea43f69080d67821e6f0449604022e2d4aea
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 list_for_each(l, list) {
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 list_for_each_safe(l, nl, list) {
299 if (depend_emit_phony)
300 fprintf(deps, "%s:\n\n", l->str);
301 nasm_free(l);
302 }
303
304 if (deps != stdout)
305 fclose(deps);
306 }
307
308 int main(int argc, char **argv)
309 {
310 StrList *depend_list = NULL, **depend_ptr;
311
312 time(&official_compile_time);
313
314 pass0 = 0;
315 want_usage = terminate_after_phase = false;
316 nasm_set_verror(nasm_verror_gnu);
317
318 error_file = stderr;
319
320 tolower_init();
321
322 nasm_init_malloc_error();
323 offsets = raa_init();
324 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
325
326 preproc = &nasmpp;
327 operating_mode = op_normal;
328
329 seg_init();
330
331 /* Define some macros dependent on the runtime, but not
332 on the command line. */
333 define_macros_early();
334
335 parse_cmdline(argc, argv);
336
337 if (terminate_after_phase) {
338 if (want_usage)
339 usage();
340 return 1;
341 }
342
343 /* If debugging info is disabled, suppress any debug calls */
344 if (!using_debug_info)
345 ofmt->current_dfmt = &null_debug_form;
346
347 if (ofmt->stdmac)
348 pp_extra_stdmac(ofmt->stdmac);
349 parser_global_info(&location);
350 eval_global_info(ofmt, lookup_label, &location);
351
352 /* define some macros dependent of command-line */
353 define_macros_late();
354
355 depend_ptr = (depend_file || (operating_mode == op_depend))
356 ? &depend_list : NULL;
357 if (!depend_target)
358 depend_target = outname;
359
360 switch (operating_mode) {
361 case op_depend:
362 {
363 char *line;
364
365 if (depend_missing_ok)
366 pp_include_path(NULL); /* "assume generated" */
367
368 preproc->reset(inname, 0, &nasmlist, depend_ptr);
369 if (outname[0] == '\0')
370 ofmt->filename(inname, outname);
371 ofile = NULL;
372 while ((line = preproc->getline()))
373 nasm_free(line);
374 preproc->cleanup(0);
375 }
376 break;
377
378 case op_preprocess:
379 {
380 char *line;
381 char *file_name = NULL;
382 int32_t prior_linnum = 0;
383 int lineinc = 0;
384
385 if (*outname) {
386 ofile = fopen(outname, "w");
387 if (!ofile)
388 nasm_error(ERR_FATAL | ERR_NOFILE,
389 "unable to open output file `%s'",
390 outname);
391 } else
392 ofile = NULL;
393
394 location.known = false;
395
396 /* pass = 1; */
397 preproc->reset(inname, 3, &nasmlist, depend_ptr);
398
399 while ((line = preproc->getline())) {
400 /*
401 * We generate %line directives if needed for later programs
402 */
403 int32_t linnum = prior_linnum += lineinc;
404 int altline = src_get(&linnum, &file_name);
405 if (altline) {
406 if (altline == 1 && lineinc == 1)
407 nasm_fputs("", ofile);
408 else {
409 lineinc = (altline != -1 || lineinc != 1);
410 fprintf(ofile ? ofile : stdout,
411 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
412 file_name);
413 }
414 prior_linnum = linnum;
415 }
416 nasm_fputs(line, ofile);
417 nasm_free(line);
418 }
419 nasm_free(file_name);
420 preproc->cleanup(0);
421 if (ofile)
422 fclose(ofile);
423 if (ofile && terminate_after_phase)
424 remove(outname);
425 ofile = NULL;
426 }
427 break;
428
429 case op_normal:
430 {
431 /*
432 * We must call ofmt->filename _anyway_, even if the user
433 * has specified their own output file, because some
434 * formats (eg OBJ and COFF) use ofmt->filename to find out
435 * the name of the input file and then put that inside the
436 * file.
437 */
438 ofmt->filename(inname, outname);
439
440 ofile = fopen(outname, (ofmt->flags & OFMT_TEXT) ? "w" : "wb");
441 if (!ofile) {
442 nasm_error(ERR_FATAL | ERR_NOFILE,
443 "unable to open output file `%s'", outname);
444 }
445
446 /*
447 * We must call init_labels() before ofmt->init() since
448 * some object formats will want to define labels in their
449 * init routines. (eg OS/2 defines the FLAT group)
450 */
451 init_labels();
452
453 ofmt->init();
454 dfmt = ofmt->current_dfmt;
455 dfmt->init();
456
457 assemble_file(inname, depend_ptr);
458
459 if (!terminate_after_phase) {
460 ofmt->cleanup(using_debug_info);
461 cleanup_labels();
462 fflush(ofile);
463 if (ferror(ofile)) {
464 nasm_error(ERR_NONFATAL|ERR_NOFILE,
465 "write error on output file `%s'", outname);
466 }
467 }
468
469 if (ofile) {
470 fclose(ofile);
471 if (terminate_after_phase)
472 remove(outname);
473 ofile = NULL;
474 }
475 }
476 break;
477 }
478
479 if (depend_list && !terminate_after_phase)
480 emit_dependencies(depend_list);
481
482 if (want_usage)
483 usage();
484
485 raa_free(offsets);
486 saa_free(forwrefs);
487 eval_cleanup();
488 stdscan_cleanup();
489
490 return terminate_after_phase;
491 }
492
493 /*
494 * Get a parameter for a command line option.
495 * First arg must be in the form of e.g. -f...
496 */
497 static char *get_param(char *p, char *q, bool *advance)
498 {
499 *advance = false;
500 if (p[2]) /* the parameter's in the option */
501 return nasm_skip_spaces(p + 2);
502 if (q && q[0]) {
503 *advance = true;
504 return q;
505 }
506 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
507 "option `-%c' requires an argument", p[1]);
508 return NULL;
509 }
510
511 /*
512 * Copy a filename
513 */
514 static void copy_filename(char *dst, const char *src)
515 {
516 size_t len = strlen(src);
517
518 if (len >= (size_t)FILENAME_MAX) {
519 nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
520 return;
521 }
522 strncpy(dst, src, FILENAME_MAX);
523 }
524
525 /*
526 * Convert a string to Make-safe form
527 */
528 static char *quote_for_make(const char *str)
529 {
530 const char *p;
531 char *os, *q;
532
533 size_t n = 1; /* Terminating zero */
534 size_t nbs = 0;
535
536 if (!str)
537 return NULL;
538
539 for (p = str; *p; p++) {
540 switch (*p) {
541 case ' ':
542 case '\t':
543 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
544 n += nbs + 2;
545 nbs = 0;
546 break;
547 case '$':
548 case '#':
549 nbs = 0;
550 n += 2;
551 break;
552 case '\\':
553 nbs++;
554 n++;
555 break;
556 default:
557 nbs = 0;
558 n++;
559 break;
560 }
561 }
562
563 /* Convert N backslashes at the end of filename to 2N backslashes */
564 if (nbs)
565 n += nbs;
566
567 os = q = nasm_malloc(n);
568
569 nbs = 0;
570 for (p = str; *p; p++) {
571 switch (*p) {
572 case ' ':
573 case '\t':
574 while (nbs--)
575 *q++ = '\\';
576 *q++ = '\\';
577 *q++ = *p;
578 break;
579 case '$':
580 *q++ = *p;
581 *q++ = *p;
582 nbs = 0;
583 break;
584 case '#':
585 *q++ = '\\';
586 *q++ = *p;
587 nbs = 0;
588 break;
589 case '\\':
590 *q++ = *p;
591 nbs++;
592 break;
593 default:
594 *q++ = *p;
595 nbs = 0;
596 break;
597 }
598 }
599 while (nbs--)
600 *q++ = '\\';
601
602 *q = '\0';
603
604 return os;
605 }
606
607 struct textargs {
608 const char *label;
609 int value;
610 };
611
612 #define OPT_PREFIX 0
613 #define OPT_POSTFIX 1
614 struct textargs textopts[] = {
615 {"prefix", OPT_PREFIX},
616 {"postfix", OPT_POSTFIX},
617 {NULL, 0}
618 };
619
620 static bool stopoptions = false;
621 static bool process_arg(char *p, char *q)
622 {
623 char *param;
624 int i;
625 bool advance = false;
626 bool do_warn;
627
628 if (!p || !p[0])
629 return false;
630
631 if (p[0] == '-' && !stopoptions) {
632 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
633 /* These parameters take values */
634 if (!(param = get_param(p, q, &advance)))
635 return advance;
636 }
637
638 switch (p[1]) {
639 case 's':
640 error_file = stdout;
641 break;
642
643 case 'o': /* output file */
644 copy_filename(outname, param);
645 break;
646
647 case 'f': /* output format */
648 ofmt = ofmt_find(param);
649 if (!ofmt) {
650 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
651 "unrecognised output format `%s' - "
652 "use -hf for a list", param);
653 }
654 break;
655
656 case 'O': /* Optimization level */
657 {
658 int opt;
659
660 if (!*param) {
661 /* Naked -O == -Ox */
662 optimizing = INT_MAX >> 1; /* Almost unlimited */
663 } else {
664 while (*param) {
665 switch (*param) {
666 case '0': case '1': case '2': case '3': case '4':
667 case '5': case '6': case '7': case '8': case '9':
668 opt = strtoul(param, &param, 10);
669
670 /* -O0 -> optimizing == -1, 0.98 behaviour */
671 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
672 if (opt < 2)
673 optimizing = opt - 1;
674 else
675 optimizing = opt;
676 break;
677
678 case 'v':
679 case '+':
680 param++;
681 opt_verbose_info = true;
682 break;
683
684 case 'x':
685 param++;
686 optimizing = INT_MAX >> 1; /* Almost unlimited */
687 break;
688
689 default:
690 nasm_error(ERR_FATAL,
691 "unknown optimization option -O%c\n",
692 *param);
693 break;
694 }
695 }
696 }
697 break;
698 }
699
700 case 'p': /* pre-include */
701 case 'P':
702 pp_pre_include(param);
703 break;
704
705 case 'd': /* pre-define */
706 case 'D':
707 pp_pre_define(param);
708 break;
709
710 case 'u': /* un-define */
711 case 'U':
712 pp_pre_undefine(param);
713 break;
714
715 case 'i': /* include search path */
716 case 'I':
717 pp_include_path(param);
718 break;
719
720 case 'l': /* listing file */
721 copy_filename(listname, param);
722 break;
723
724 case 'Z': /* error messages file */
725 copy_filename(errname, param);
726 break;
727
728 case 'F': /* specify debug format */
729 ofmt->current_dfmt = dfmt_find(ofmt, param);
730 if (!ofmt->current_dfmt) {
731 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
732 "unrecognized debug format `%s' for"
733 " output format `%s'",
734 param, ofmt->shortname);
735 }
736 using_debug_info = true;
737 break;
738
739 case 'X': /* specify error reporting format */
740 if (nasm_stricmp("vc", param) == 0)
741 nasm_set_verror(nasm_verror_vc);
742 else if (nasm_stricmp("gnu", param) == 0)
743 nasm_set_verror(nasm_verror_gnu);
744 else
745 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
746 "unrecognized error reporting format `%s'",
747 param);
748 break;
749
750 case 'g':
751 using_debug_info = true;
752 break;
753
754 case 'h':
755 printf
756 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
757 "[-l listfile]\n"
758 " [options...] [--] filename\n"
759 " or nasm -v for version info\n\n"
760 " -t assemble in SciTech TASM compatible mode\n"
761 " -g generate debug information in selected format\n");
762 printf
763 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
764 " -a don't preprocess (assemble only)\n"
765 " -M generate Makefile dependencies on stdout\n"
766 " -MG d:o, missing files assumed generated\n"
767 " -MF <file> set Makefile dependency file\n"
768 " -MD <file> assemble and generate dependencies\n"
769 " -MT <file> dependency target name\n"
770 " -MQ <file> dependency target name (quoted)\n"
771 " -MP emit phony target\n\n"
772 " -Z<file> redirect error messages to file\n"
773 " -s redirect error messages to stdout\n\n"
774 " -F format select a debugging format\n\n"
775 " -I<path> adds a pathname to the include file path\n");
776 printf
777 (" -O<digit> optimize branch offsets\n"
778 " -O0: No optimization (default)\n"
779 " -O1: Minimal optimization\n"
780 " -Ox: Multipass optimization (recommended)\n\n"
781 " -P<file> pre-includes a file\n"
782 " -D<macro>[=<value>] pre-defines a macro\n"
783 " -U<macro> undefines a macro\n"
784 " -X<format> specifies error reporting format (gnu or vc)\n"
785 " -w+foo enables warning foo (equiv. -Wfoo)\n"
786 " -w-foo disable warning foo (equiv. -Wno-foo)\n\n"
787 "--prefix,--postfix\n"
788 " this options prepend or append the given argument to all\n"
789 " extern and global variables\n\n"
790 "Warnings:\n");
791 for (i = 0; i <= ERR_WARN_MAX; i++)
792 printf(" %-23s %s (default %s)\n",
793 warnings[i].name, warnings[i].help,
794 warnings[i].enabled ? "on" : "off");
795 printf
796 ("\nresponse files should contain command line parameters"
797 ", one per line.\n");
798 if (p[2] == 'f') {
799 printf("\nvalid output formats for -f are"
800 " (`*' denotes default):\n");
801 ofmt_list(ofmt, stdout);
802 } else {
803 printf("\nFor a list of valid output formats, use -hf.\n");
804 printf("For a list of debug formats, use -f <form> -y.\n");
805 }
806 exit(0); /* never need usage message here */
807 break;
808
809 case 'y':
810 printf("\nvalid debug formats for '%s' output format are"
811 " ('*' denotes default):\n", ofmt->shortname);
812 dfmt_list(ofmt, stdout);
813 exit(0);
814 break;
815
816 case 't':
817 tasm_compatible_mode = true;
818 break;
819
820 case 'v':
821 printf("NASM version %s compiled on %s%s\n",
822 nasm_version, nasm_date, nasm_compile_options);
823 exit(0); /* never need usage message here */
824 break;
825
826 case 'e': /* preprocess only */
827 case 'E':
828 operating_mode = op_preprocess;
829 break;
830
831 case 'a': /* assemble only - don't preprocess */
832 preproc = &no_pp;
833 break;
834
835 case 'W':
836 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
837 do_warn = false;
838 param += 3;
839 } else {
840 do_warn = true;
841 }
842 goto set_warning;
843
844 case 'w':
845 if (param[0] != '+' && param[0] != '-') {
846 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
847 "invalid option to `-w'");
848 break;
849 }
850 do_warn = (param[0] == '+');
851 param++;
852
853 set_warning:
854 for (i = 0; i <= ERR_WARN_MAX; i++)
855 if (!nasm_stricmp(param, warnings[i].name))
856 break;
857 if (i <= ERR_WARN_MAX)
858 warning_on_global[i] = do_warn;
859 else if (!nasm_stricmp(param, "all"))
860 for (i = 1; i <= ERR_WARN_MAX; i++)
861 warning_on_global[i] = do_warn;
862 else if (!nasm_stricmp(param, "none"))
863 for (i = 1; i <= ERR_WARN_MAX; i++)
864 warning_on_global[i] = !do_warn;
865 else
866 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
867 "invalid warning `%s'", param);
868 break;
869
870 case 'M':
871 switch (p[2]) {
872 case 0:
873 operating_mode = op_depend;
874 break;
875 case 'G':
876 operating_mode = op_depend;
877 depend_missing_ok = true;
878 break;
879 case 'P':
880 depend_emit_phony = true;
881 break;
882 case 'D':
883 depend_file = q;
884 advance = true;
885 break;
886 case 'T':
887 depend_target = q;
888 advance = true;
889 break;
890 case 'Q':
891 depend_target = quote_for_make(q);
892 advance = true;
893 break;
894 default:
895 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
896 "unknown dependency option `-M%c'", p[2]);
897 break;
898 }
899 if (advance && (!q || !q[0])) {
900 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
901 "option `-M%c' requires a parameter", p[2]);
902 break;
903 }
904 break;
905
906 case '-':
907 {
908 int s;
909
910 if (p[2] == 0) { /* -- => stop processing options */
911 stopoptions = 1;
912 break;
913 }
914 for (s = 0; textopts[s].label; s++) {
915 if (!nasm_stricmp(p + 2, textopts[s].label)) {
916 break;
917 }
918 }
919
920 switch (s) {
921
922 case OPT_PREFIX:
923 case OPT_POSTFIX:
924 {
925 if (!q) {
926 nasm_error(ERR_NONFATAL | ERR_NOFILE |
927 ERR_USAGE,
928 "option `--%s' requires an argument",
929 p + 2);
930 break;
931 } else {
932 advance = 1, param = q;
933 }
934
935 if (s == OPT_PREFIX) {
936 strncpy(lprefix, param, PREFIX_MAX - 1);
937 lprefix[PREFIX_MAX - 1] = 0;
938 break;
939 }
940 if (s == OPT_POSTFIX) {
941 strncpy(lpostfix, param, POSTFIX_MAX - 1);
942 lpostfix[POSTFIX_MAX - 1] = 0;
943 break;
944 }
945 break;
946 }
947 default:
948 {
949 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
950 "unrecognised option `--%s'", p + 2);
951 break;
952 }
953 }
954 break;
955 }
956
957 default:
958 if (!ofmt->setinfo(GI_SWITCH, &p))
959 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
960 "unrecognised option `-%c'", p[1]);
961 break;
962 }
963 } else {
964 if (*inname) {
965 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
966 "more than one input file specified");
967 } else {
968 copy_filename(inname, p);
969 }
970 }
971
972 return advance;
973 }
974
975 #define ARG_BUF_DELTA 128
976
977 static void process_respfile(FILE * rfile)
978 {
979 char *buffer, *p, *q, *prevarg;
980 int bufsize, prevargsize;
981
982 bufsize = prevargsize = ARG_BUF_DELTA;
983 buffer = nasm_malloc(ARG_BUF_DELTA);
984 prevarg = nasm_malloc(ARG_BUF_DELTA);
985 prevarg[0] = '\0';
986
987 while (1) { /* Loop to handle all lines in file */
988 p = buffer;
989 while (1) { /* Loop to handle long lines */
990 q = fgets(p, bufsize - (p - buffer), rfile);
991 if (!q)
992 break;
993 p += strlen(p);
994 if (p > buffer && p[-1] == '\n')
995 break;
996 if (p - buffer > bufsize - 10) {
997 int offset;
998 offset = p - buffer;
999 bufsize += ARG_BUF_DELTA;
1000 buffer = nasm_realloc(buffer, bufsize);
1001 p = buffer + offset;
1002 }
1003 }
1004
1005 if (!q && p == buffer) {
1006 if (prevarg[0])
1007 process_arg(prevarg, NULL);
1008 nasm_free(buffer);
1009 nasm_free(prevarg);
1010 return;
1011 }
1012
1013 /*
1014 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1015 * them are present at the end of the line.
1016 */
1017 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
1018
1019 while (p > buffer && nasm_isspace(p[-1]))
1020 *--p = '\0';
1021
1022 p = nasm_skip_spaces(buffer);
1023
1024 if (process_arg(prevarg, p))
1025 *p = '\0';
1026
1027 if ((int) strlen(p) > prevargsize - 10) {
1028 prevargsize += ARG_BUF_DELTA;
1029 prevarg = nasm_realloc(prevarg, prevargsize);
1030 }
1031 strncpy(prevarg, p, prevargsize);
1032 }
1033 }
1034
1035 /* Function to process args from a string of args, rather than the
1036 * argv array. Used by the environment variable and response file
1037 * processing.
1038 */
1039 static void process_args(char *args)
1040 {
1041 char *p, *q, *arg, *prevarg;
1042 char separator = ' ';
1043
1044 p = args;
1045 if (*p && *p != '-')
1046 separator = *p++;
1047 arg = NULL;
1048 while (*p) {
1049 q = p;
1050 while (*p && *p != separator)
1051 p++;
1052 while (*p == separator)
1053 *p++ = '\0';
1054 prevarg = arg;
1055 arg = q;
1056 if (process_arg(prevarg, arg))
1057 arg = NULL;
1058 }
1059 if (arg)
1060 process_arg(arg, NULL);
1061 }
1062
1063 static void process_response_file(const char *file)
1064 {
1065 char str[2048];
1066 FILE *f = fopen(file, "r");
1067 if (!f) {
1068 perror(file);
1069 exit(-1);
1070 }
1071 while (fgets(str, sizeof str, f)) {
1072 process_args(str);
1073 }
1074 fclose(f);
1075 }
1076
1077 static void parse_cmdline(int argc, char **argv)
1078 {
1079 FILE *rfile;
1080 char *envreal, *envcopy = NULL, *p, *arg;
1081 int i;
1082
1083 *inname = *outname = *listname = *errname = '\0';
1084 for (i = 0; i <= ERR_WARN_MAX; i++)
1085 warning_on_global[i] = warnings[i].enabled;
1086
1087 /*
1088 * First, process the NASMENV environment variable.
1089 */
1090 envreal = getenv("NASMENV");
1091 arg = NULL;
1092 if (envreal) {
1093 envcopy = nasm_strdup(envreal);
1094 process_args(envcopy);
1095 nasm_free(envcopy);
1096 }
1097
1098 /*
1099 * Now process the actual command line.
1100 */
1101 while (--argc) {
1102 bool advance;
1103 argv++;
1104 if (argv[0][0] == '@') {
1105 /* We have a response file, so process this as a set of
1106 * arguments like the environment variable. This allows us
1107 * to have multiple arguments on a single line, which is
1108 * different to the -@resp file processing below for regular
1109 * NASM.
1110 */
1111 process_response_file(argv[0]+1);
1112 argc--;
1113 argv++;
1114 }
1115 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1116 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1117 if (p) {
1118 rfile = fopen(p, "r");
1119 if (rfile) {
1120 process_respfile(rfile);
1121 fclose(rfile);
1122 } else
1123 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1124 "unable to open response file `%s'", p);
1125 }
1126 } else
1127 advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1128 argv += advance, argc -= advance;
1129 }
1130
1131 /* Look for basic command line typos. This definitely doesn't
1132 catch all errors, but it might help cases of fumbled fingers. */
1133 if (!*inname)
1134 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1135 "no input file specified");
1136 else if (!strcmp(inname, errname) ||
1137 !strcmp(inname, outname) ||
1138 !strcmp(inname, listname) ||
1139 (depend_file && !strcmp(inname, depend_file)))
1140 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1141 "file `%s' is both input and output file",
1142 inname);
1143
1144 if (*errname) {
1145 error_file = fopen(errname, "w");
1146 if (!error_file) {
1147 error_file = stderr; /* Revert to default! */
1148 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1149 "cannot open file `%s' for error messages",
1150 errname);
1151 }
1152 }
1153 }
1154
1155 static enum directives getkw(char **directive, char **value);
1156
1157 static void assemble_file(char *fname, StrList **depend_ptr)
1158 {
1159 char *directive, *value, *p, *q, *special, *line;
1160 insn output_ins;
1161 int i, validid;
1162 bool rn_error;
1163 int32_t seg;
1164 int64_t offs;
1165 struct tokenval tokval;
1166 expr *e;
1167 int pass_max;
1168
1169 if (cmd_sb == 32 && cmd_cpu < IF_386)
1170 nasm_error(ERR_FATAL, "command line: "
1171 "32-bit segment size requires a higher cpu");
1172
1173 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1174 for (passn = 1; pass0 <= 2; passn++) {
1175 int pass1, pass2;
1176 ldfunc def_label;
1177
1178 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1179 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1180 /* pass0 0, 0, 0, ..., 1, 2 */
1181
1182 def_label = passn > 1 ? redefine_label : define_label;
1183
1184 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1185 cpu = cmd_cpu;
1186 if (pass0 == 2) {
1187 if (*listname)
1188 nasmlist.init(listname, nasm_error);
1189 }
1190 in_abs_seg = false;
1191 global_offset_changed = 0; /* set by redefine_label */
1192 location.segment = ofmt->section(NULL, pass2, &sb);
1193 globalbits = sb;
1194 if (passn > 1) {
1195 saa_rewind(forwrefs);
1196 forwref = saa_rstruct(forwrefs);
1197 raa_free(offsets);
1198 offsets = raa_init();
1199 }
1200 preproc->reset(fname, pass1, &nasmlist,
1201 pass1 == 2 ? depend_ptr : NULL);
1202 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1203
1204 globallineno = 0;
1205 if (passn == 1)
1206 location.known = true;
1207 location.offset = offs = GET_CURR_OFFS;
1208
1209 while ((line = preproc->getline())) {
1210 enum directives d;
1211 globallineno++;
1212
1213 /*
1214 * Here we parse our directives; this is not handled by the
1215 * 'real' parser. This really should be a separate function.
1216 */
1217 directive = line;
1218 d = getkw(&directive, &value);
1219 if (d) {
1220 int err = 0;
1221
1222 switch (d) {
1223 case D_SEGMENT: /* [SEGMENT n] */
1224 case D_SECTION:
1225 seg = ofmt->section(value, pass2, &sb);
1226 if (seg == NO_SEG) {
1227 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1228 "segment name `%s' not recognized",
1229 value);
1230 } else {
1231 in_abs_seg = false;
1232 location.segment = seg;
1233 }
1234 break;
1235 case D_SEGALIGN: /* [SEGALIGN n] */
1236 {
1237 if (*value) {
1238 int align = atoi(value);
1239 if (!is_power2(align)) {
1240 nasm_error(ERR_NONFATAL,
1241 "segment alignment `%s' is not power of two",
1242 value);
1243 }
1244 }
1245 }
1246 break;
1247 case D_EXTERN: /* [EXTERN label:special] */
1248 if (*value == '$')
1249 value++; /* skip initial $ if present */
1250 if (pass0 == 2) {
1251 q = value;
1252 while (*q && *q != ':')
1253 q++;
1254 if (*q == ':') {
1255 *q++ = '\0';
1256 ofmt->symdef(value, 0L, 0L, 3, q);
1257 }
1258 } else if (passn == 1) {
1259 q = value;
1260 validid = true;
1261 if (!isidstart(*q))
1262 validid = false;
1263 while (*q && *q != ':') {
1264 if (!isidchar(*q))
1265 validid = false;
1266 q++;
1267 }
1268 if (!validid) {
1269 nasm_error(ERR_NONFATAL,
1270 "identifier expected after EXTERN");
1271 break;
1272 }
1273 if (*q == ':') {
1274 *q++ = '\0';
1275 special = q;
1276 } else
1277 special = NULL;
1278 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1279 int temp = pass0;
1280 pass0 = 1; /* fake pass 1 in labels.c */
1281 declare_as_global(value, special);
1282 define_label(value, seg_alloc(), 0L, NULL,
1283 false, true);
1284 pass0 = temp;
1285 }
1286 } /* else pass0 == 1 */
1287 break;
1288 case D_BITS: /* [BITS bits] */
1289 globalbits = sb = get_bits(value);
1290 break;
1291 case D_GLOBAL: /* [GLOBAL symbol:special] */
1292 if (*value == '$')
1293 value++; /* skip initial $ if present */
1294 if (pass0 == 2) { /* pass 2 */
1295 q = value;
1296 while (*q && *q != ':')
1297 q++;
1298 if (*q == ':') {
1299 *q++ = '\0';
1300 ofmt->symdef(value, 0L, 0L, 3, q);
1301 }
1302 } else if (pass2 == 1) { /* pass == 1 */
1303 q = value;
1304 validid = true;
1305 if (!isidstart(*q))
1306 validid = false;
1307 while (*q && *q != ':') {
1308 if (!isidchar(*q))
1309 validid = false;
1310 q++;
1311 }
1312 if (!validid) {
1313 nasm_error(ERR_NONFATAL,
1314 "identifier expected after GLOBAL");
1315 break;
1316 }
1317 if (*q == ':') {
1318 *q++ = '\0';
1319 special = q;
1320 } else
1321 special = NULL;
1322 declare_as_global(value, special);
1323 } /* pass == 1 */
1324 break;
1325 case D_COMMON: /* [COMMON symbol size:special] */
1326 {
1327 int64_t size;
1328
1329 if (*value == '$')
1330 value++; /* skip initial $ if present */
1331 p = value;
1332 validid = true;
1333 if (!isidstart(*p))
1334 validid = false;
1335 while (*p && !nasm_isspace(*p)) {
1336 if (!isidchar(*p))
1337 validid = false;
1338 p++;
1339 }
1340 if (!validid) {
1341 nasm_error(ERR_NONFATAL,
1342 "identifier expected after COMMON");
1343 break;
1344 }
1345 if (*p) {
1346 p = nasm_zap_spaces_fwd(p);
1347 q = p;
1348 while (*q && *q != ':')
1349 q++;
1350 if (*q == ':') {
1351 *q++ = '\0';
1352 special = q;
1353 } else {
1354 special = NULL;
1355 }
1356 size = readnum(p, &rn_error);
1357 if (rn_error) {
1358 nasm_error(ERR_NONFATAL,
1359 "invalid size specified"
1360 " in COMMON declaration");
1361 break;
1362 }
1363 } else {
1364 nasm_error(ERR_NONFATAL,
1365 "no size specified in"
1366 " COMMON declaration");
1367 break;
1368 }
1369
1370 if (pass0 < 2) {
1371 define_common(value, seg_alloc(), size, special);
1372 } else if (pass0 == 2) {
1373 if (special)
1374 ofmt->symdef(value, 0L, 0L, 3, special);
1375 }
1376 break;
1377 }
1378 case D_ABSOLUTE: /* [ABSOLUTE address] */
1379 stdscan_reset();
1380 stdscan_set(value);
1381 tokval.t_type = TOKEN_INVALID;
1382 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1383 nasm_error, NULL);
1384 if (e) {
1385 if (!is_reloc(e))
1386 nasm_error(pass0 ==
1387 1 ? ERR_NONFATAL : ERR_PANIC,
1388 "cannot use non-relocatable expression as "
1389 "ABSOLUTE address");
1390 else {
1391 abs_seg = reloc_seg(e);
1392 abs_offset = reloc_value(e);
1393 }
1394 } else if (passn == 1)
1395 abs_offset = 0x100; /* don't go near zero in case of / */
1396 else
1397 nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
1398 "in pass two");
1399 in_abs_seg = true;
1400 location.segment = NO_SEG;
1401 break;
1402 case D_DEBUG: /* [DEBUG] */
1403 {
1404 char debugid[128];
1405 bool badid, overlong;
1406
1407 p = value;
1408 q = debugid;
1409 badid = overlong = false;
1410 if (!isidstart(*p)) {
1411 badid = true;
1412 } else {
1413 while (*p && !nasm_isspace(*p)) {
1414 if (q >= debugid + sizeof debugid - 1) {
1415 overlong = true;
1416 break;
1417 }
1418 if (!isidchar(*p))
1419 badid = true;
1420 *q++ = *p++;
1421 }
1422 *q = 0;
1423 }
1424 if (badid) {
1425 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1426 "identifier expected after DEBUG");
1427 break;
1428 }
1429 if (overlong) {
1430 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1431 "DEBUG identifier too long");
1432 break;
1433 }
1434 p = nasm_skip_spaces(p);
1435 if (pass0 == 2)
1436 dfmt->debug_directive(debugid, p);
1437 break;
1438 }
1439 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1440 value = nasm_skip_spaces(value);
1441 switch(*value) {
1442 case '-': validid = 0; value++; break;
1443 case '+': validid = 1; value++; break;
1444 case '*': validid = 2; value++; break;
1445 default: validid = 1; break;
1446 }
1447
1448 for (i = 1; i <= ERR_WARN_MAX; i++)
1449 if (!nasm_stricmp(value, warnings[i].name))
1450 break;
1451 if (i <= ERR_WARN_MAX) {
1452 switch(validid) {
1453 case 0:
1454 warning_on[i] = false;
1455 break;
1456 case 1:
1457 warning_on[i] = true;
1458 break;
1459 case 2:
1460 warning_on[i] = warning_on_global[i];
1461 break;
1462 }
1463 }
1464 else
1465 nasm_error(ERR_NONFATAL,
1466 "invalid warning id in WARNING directive");
1467 break;
1468 case D_CPU: /* [CPU] */
1469 cpu = get_cpu(value);
1470 break;
1471 case D_LIST: /* [LIST {+|-}] */
1472 value = nasm_skip_spaces(value);
1473 if (*value == '+') {
1474 user_nolist = 0;
1475 } else {
1476 if (*value == '-') {
1477 user_nolist = 1;
1478 } else {
1479 err = 1;
1480 }
1481 }
1482 break;
1483 case D_DEFAULT: /* [DEFAULT] */
1484 stdscan_reset();
1485 stdscan_set(value);
1486 tokval.t_type = TOKEN_INVALID;
1487 if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1488 switch ((int)tokval.t_integer) {
1489 case S_REL:
1490 globalrel = 1;
1491 break;
1492 case S_ABS:
1493 globalrel = 0;
1494 break;
1495 default:
1496 err = 1;
1497 break;
1498 }
1499 } else {
1500 err = 1;
1501 }
1502 break;
1503 case D_FLOAT:
1504 if (float_option(value)) {
1505 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1506 "unknown 'float' directive: %s",
1507 value);
1508 }
1509 break;
1510 default:
1511 if (ofmt->directive(d, value, pass2))
1512 break;
1513 /* else fall through */
1514 case D_unknown:
1515 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1516 "unrecognised directive [%s]",
1517 directive);
1518 break;
1519 }
1520 if (err) {
1521 nasm_error(ERR_NONFATAL,
1522 "invalid parameter to [%s] directive",
1523 directive);
1524 }
1525 } else { /* it isn't a directive */
1526 parse_line(pass1, line, &output_ins, def_label);
1527
1528 if (optimizing > 0) {
1529 if (forwref != NULL && globallineno == forwref->lineno) {
1530 output_ins.forw_ref = true;
1531 do {
1532 output_ins.oprs[forwref->operand].opflags |= OPFLAG_FORWARD;
1533 forwref = saa_rstruct(forwrefs);
1534 } while (forwref != NULL
1535 && forwref->lineno == globallineno);
1536 } else
1537 output_ins.forw_ref = false;
1538
1539 if (output_ins.forw_ref) {
1540 if (passn == 1) {
1541 for (i = 0; i < output_ins.operands; i++) {
1542 if (output_ins.oprs[i].opflags & OPFLAG_FORWARD) {
1543 struct forwrefinfo *fwinf =
1544 (struct forwrefinfo *)
1545 saa_wstruct(forwrefs);
1546 fwinf->lineno = globallineno;
1547 fwinf->operand = i;
1548 }
1549 }
1550 }
1551 }
1552 }
1553
1554 /* forw_ref */
1555 if (output_ins.opcode == I_EQU) {
1556 if (pass1 == 1) {
1557 /*
1558 * Special `..' EQUs get processed in pass two,
1559 * except `..@' macro-processor EQUs which are done
1560 * in the normal place.
1561 */
1562 if (!output_ins.label)
1563 nasm_error(ERR_NONFATAL,
1564 "EQU not preceded by label");
1565
1566 else if (output_ins.label[0] != '.' ||
1567 output_ins.label[1] != '.' ||
1568 output_ins.label[2] == '@') {
1569 if (output_ins.operands == 1 &&
1570 (output_ins.oprs[0].type & IMMEDIATE) &&
1571 output_ins.oprs[0].wrt == NO_SEG) {
1572 bool isext = !!(output_ins.oprs[0].opflags
1573 & OPFLAG_EXTERN);
1574 def_label(output_ins.label,
1575 output_ins.oprs[0].segment,
1576 output_ins.oprs[0].offset, NULL,
1577 false, isext);
1578 } else if (output_ins.operands == 2
1579 && (output_ins.oprs[0].type & IMMEDIATE)
1580 && (output_ins.oprs[0].type & COLON)
1581 && output_ins.oprs[0].segment == NO_SEG
1582 && output_ins.oprs[0].wrt == NO_SEG
1583 && (output_ins.oprs[1].type & IMMEDIATE)
1584 && output_ins.oprs[1].segment == NO_SEG
1585 && output_ins.oprs[1].wrt == NO_SEG) {
1586 def_label(output_ins.label,
1587 output_ins.oprs[0].offset | SEG_ABS,
1588 output_ins.oprs[1].offset,
1589 NULL, false, false);
1590 } else
1591 nasm_error(ERR_NONFATAL,
1592 "bad syntax for EQU");
1593 }
1594 } else {
1595 /*
1596 * Special `..' EQUs get processed here, except
1597 * `..@' macro processor EQUs which are done above.
1598 */
1599 if (output_ins.label[0] == '.' &&
1600 output_ins.label[1] == '.' &&
1601 output_ins.label[2] != '@') {
1602 if (output_ins.operands == 1 &&
1603 (output_ins.oprs[0].type & IMMEDIATE)) {
1604 define_label(output_ins.label,
1605 output_ins.oprs[0].segment,
1606 output_ins.oprs[0].offset,
1607 NULL, false, false);
1608 } else if (output_ins.operands == 2
1609 && (output_ins.oprs[0].type & IMMEDIATE)
1610 && (output_ins.oprs[0].type & COLON)
1611 && output_ins.oprs[0].segment == NO_SEG
1612 && (output_ins.oprs[1].type & IMMEDIATE)
1613 && output_ins.oprs[1].segment == NO_SEG) {
1614 define_label(output_ins.label,
1615 output_ins.oprs[0].offset | SEG_ABS,
1616 output_ins.oprs[1].offset,
1617 NULL, false, false);
1618 } else
1619 nasm_error(ERR_NONFATAL,
1620 "bad syntax for EQU");
1621 }
1622 }
1623 } else { /* instruction isn't an EQU */
1624
1625 if (pass1 == 1) {
1626
1627 int64_t l = insn_size(location.segment, offs, sb, cpu,
1628 &output_ins, nasm_error);
1629
1630 /* if (using_debug_info) && output_ins.opcode != -1) */
1631 if (using_debug_info)
1632 { /* fbk 03/25/01 */
1633 /* this is done here so we can do debug type info */
1634 int32_t typeinfo =
1635 TYS_ELEMENTS(output_ins.operands);
1636 switch (output_ins.opcode) {
1637 case I_RESB:
1638 typeinfo =
1639 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_BYTE;
1640 break;
1641 case I_RESW:
1642 typeinfo =
1643 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_WORD;
1644 break;
1645 case I_RESD:
1646 typeinfo =
1647 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_DWORD;
1648 break;
1649 case I_RESQ:
1650 typeinfo =
1651 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_QWORD;
1652 break;
1653 case I_REST:
1654 typeinfo =
1655 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_TBYTE;
1656 break;
1657 case I_RESO:
1658 typeinfo =
1659 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_OWORD;
1660 break;
1661 case I_RESY:
1662 typeinfo =
1663 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_YWORD;
1664 break;
1665 case I_DB:
1666 typeinfo |= TY_BYTE;
1667 break;
1668 case I_DW:
1669 typeinfo |= TY_WORD;
1670 break;
1671 case I_DD:
1672 if (output_ins.eops_float)
1673 typeinfo |= TY_FLOAT;
1674 else
1675 typeinfo |= TY_DWORD;
1676 break;
1677 case I_DQ:
1678 typeinfo |= TY_QWORD;
1679 break;
1680 case I_DT:
1681 typeinfo |= TY_TBYTE;
1682 break;
1683 case I_DO:
1684 typeinfo |= TY_OWORD;
1685 break;
1686 case I_DY:
1687 typeinfo |= TY_YWORD;
1688 break;
1689 default:
1690 typeinfo = TY_LABEL;
1691
1692 }
1693
1694 dfmt->debug_typevalue(typeinfo);
1695 }
1696 if (l != -1) {
1697 offs += l;
1698 SET_CURR_OFFS(offs);
1699 }
1700 /*
1701 * else l == -1 => invalid instruction, which will be
1702 * flagged as an error on pass 2
1703 */
1704
1705 } else {
1706 offs += assemble(location.segment, offs, sb, cpu,
1707 &output_ins, ofmt, nasm_error,
1708 &nasmlist);
1709 SET_CURR_OFFS(offs);
1710
1711 }
1712 } /* not an EQU */
1713 cleanup_insn(&output_ins);
1714 }
1715 nasm_free(line);
1716 location.offset = offs = GET_CURR_OFFS;
1717 } /* end while (line = preproc->getline... */
1718
1719 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1720 nasm_error(ERR_NONFATAL,
1721 "phase error detected at end of assembly.");
1722
1723 if (pass1 == 1)
1724 preproc->cleanup(1);
1725
1726 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1727 pass0++;
1728 } else if (global_offset_changed &&
1729 global_offset_changed < prev_offset_changed) {
1730 prev_offset_changed = global_offset_changed;
1731 stall_count = 0;
1732 } else {
1733 stall_count++;
1734 }
1735
1736 if (terminate_after_phase)
1737 break;
1738
1739 if ((stall_count > 997) || (passn >= pass_max)) {
1740 /* We get here if the labels don't converge
1741 * Example: FOO equ FOO + 1
1742 */
1743 nasm_error(ERR_NONFATAL,
1744 "Can't find valid values for all labels "
1745 "after %d passes, giving up.", passn);
1746 nasm_error(ERR_NONFATAL,
1747 "Possible causes: recursive EQUs, macro abuse.");
1748 break;
1749 }
1750 }
1751
1752 preproc->cleanup(0);
1753 nasmlist.cleanup();
1754 if (!terminate_after_phase && opt_verbose_info) {
1755 /* -On and -Ov switches */
1756 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1757 }
1758 }
1759
1760 static enum directives getkw(char **directive, char **value)
1761 {
1762 char *p, *q, *buf;
1763
1764 buf = nasm_skip_spaces(*directive);
1765
1766 /* it should be enclosed in [ ] */
1767 if (*buf != '[')
1768 return D_none;
1769 q = strchr(buf, ']');
1770 if (!q)
1771 return D_none;
1772
1773 /* stip off the comments */
1774 p = strchr(buf, ';');
1775 if (p) {
1776 if (p < q) /* ouch! somwhere inside */
1777 return D_none;
1778 *p = '\0';
1779 }
1780
1781 /* no brace, no trailing spaces */
1782 *q = '\0';
1783 nasm_zap_spaces_rev(--q);
1784
1785 /* directive */
1786 p = nasm_skip_spaces(++buf);
1787 q = nasm_skip_word(p);
1788 if (!q)
1789 return D_none; /* sigh... no value there */
1790 *q = '\0';
1791 *directive = p;
1792
1793 /* and value finally */
1794 p = nasm_skip_spaces(++q);
1795 *value = p;
1796
1797 return find_directive(*directive);
1798 }
1799
1800 /**
1801 * gnu style error reporting
1802 * This function prints an error message to error_file in the
1803 * style used by GNU. An example would be:
1804 * file.asm:50: error: blah blah blah
1805 * where file.asm is the name of the file, 50 is the line number on
1806 * which the error occurs (or is detected) and "error:" is one of
1807 * the possible optional diagnostics -- it can be "error" or "warning"
1808 * or something else. Finally the line terminates with the actual
1809 * error message.
1810 *
1811 * @param severity the severity of the warning or error
1812 * @param fmt the printf style format string
1813 */
1814 static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
1815 {
1816 char *currentfile = NULL;
1817 int32_t lineno = 0;
1818
1819 if (is_suppressed_warning(severity))
1820 return;
1821
1822 if (!(severity & ERR_NOFILE))
1823 src_get(&lineno, &currentfile);
1824
1825 if (currentfile) {
1826 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1827 nasm_free(currentfile);
1828 } else {
1829 fputs("nasm: ", error_file);
1830 }
1831
1832 nasm_verror_common(severity, fmt, ap);
1833 }
1834
1835 /**
1836 * MS style error reporting
1837 * This function prints an error message to error_file in the
1838 * style used by Visual C and some other Microsoft tools. An example
1839 * would be:
1840 * file.asm(50) : error: blah blah blah
1841 * where file.asm is the name of the file, 50 is the line number on
1842 * which the error occurs (or is detected) and "error:" is one of
1843 * the possible optional diagnostics -- it can be "error" or "warning"
1844 * or something else. Finally the line terminates with the actual
1845 * error message.
1846 *
1847 * @param severity the severity of the warning or error
1848 * @param fmt the printf style format string
1849 */
1850 static void nasm_verror_vc(int severity, const char *fmt, va_list ap)
1851 {
1852 char *currentfile = NULL;
1853 int32_t lineno = 0;
1854
1855 if (is_suppressed_warning(severity))
1856 return;
1857
1858 if (!(severity & ERR_NOFILE))
1859 src_get(&lineno, &currentfile);
1860
1861 if (currentfile) {
1862 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1863 nasm_free(currentfile);
1864 } else {
1865 fputs("nasm: ", error_file);
1866 }
1867
1868 nasm_verror_common(severity, fmt, ap);
1869 }
1870
1871 /**
1872 * check for supressed warning
1873 * checks for suppressed warning or pass one only warning and we're
1874 * not in pass 1
1875 *
1876 * @param severity the severity of the warning or error
1877 * @return true if we should abort error/warning printing
1878 */
1879 static bool is_suppressed_warning(int severity)
1880 {
1881 /*
1882 * See if it's a suppressed warning.
1883 */
1884 return (severity & ERR_MASK) == ERR_WARNING &&
1885 (((severity & ERR_WARN_MASK) != 0 &&
1886 !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1887 /* See if it's a pass-one only warning and we're not in pass one. */
1888 ((severity & ERR_PASS1) && pass0 != 1) ||
1889 ((severity & ERR_PASS2) && pass0 != 2));
1890 }
1891
1892 /**
1893 * common error reporting
1894 * This is the common back end of the error reporting schemes currently
1895 * implemented. It prints the nature of the warning and then the
1896 * specific error message to error_file and may or may not return. It
1897 * doesn't return if the error severity is a "panic" or "debug" type.
1898 *
1899 * @param severity the severity of the warning or error
1900 * @param fmt the printf style format string
1901 */
1902 static void nasm_verror_common(int severity, const char *fmt, va_list args)
1903 {
1904 char msg[1024];
1905 const char *pfx;
1906
1907 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1908 case ERR_WARNING:
1909 pfx = "warning: ";
1910 break;
1911 case ERR_NONFATAL:
1912 pfx = "error: ";
1913 break;
1914 case ERR_FATAL:
1915 pfx = "fatal: ";
1916 break;
1917 case ERR_PANIC:
1918 pfx = "panic: ";
1919 break;
1920 case ERR_DEBUG:
1921 pfx = "debug: ";
1922 break;
1923 default:
1924 pfx = "";
1925 break;
1926 }
1927
1928 vsnprintf(msg, sizeof msg, fmt, args);
1929
1930 fprintf(error_file, "%s%s\n", pfx, msg);
1931
1932 if (*listname)
1933 nasmlist.error(severity, pfx, msg);
1934
1935 if (severity & ERR_USAGE)
1936 want_usage = true;
1937
1938 switch (severity & ERR_MASK) {
1939 case ERR_DEBUG:
1940 /* no further action, by definition */
1941 break;
1942 case ERR_WARNING:
1943 if (warning_on[0]) /* Treat warnings as errors */
1944 terminate_after_phase = true;
1945 break;
1946 case ERR_NONFATAL:
1947 terminate_after_phase = true;
1948 break;
1949 case ERR_FATAL:
1950 if (ofile) {
1951 fclose(ofile);
1952 remove(outname);
1953 ofile = NULL;
1954 }
1955 if (want_usage)
1956 usage();
1957 exit(1); /* instantly die */
1958 break; /* placate silly compilers */
1959 case ERR_PANIC:
1960 fflush(NULL);
1961 /* abort(); *//* halt, catch fire, and dump core */
1962 exit(3);
1963 break;
1964 }
1965 }
1966
1967 static void usage(void)
1968 {
1969 fputs("type `nasm -h' for help\n", error_file);
1970 }
1971
1972 #define BUF_DELTA 512
1973
1974 static FILE *no_pp_fp;
1975 static ListGen *no_pp_list;
1976 static int32_t no_pp_lineinc;
1977
1978 static void no_pp_reset(char *file, int pass, ListGen * listgen,
1979 StrList **deplist)
1980 {
1981 src_set_fname(nasm_strdup(file));
1982 src_set_linnum(0);
1983 no_pp_lineinc = 1;
1984 no_pp_fp = fopen(file, "r");
1985 if (!no_pp_fp)
1986 nasm_error(ERR_FATAL | ERR_NOFILE,
1987 "unable to open input file `%s'", file);
1988 no_pp_list = listgen;
1989 (void)pass; /* placate compilers */
1990
1991 if (deplist) {
1992 StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
1993 sl->next = NULL;
1994 strcpy(sl->str, file);
1995 *deplist = sl;
1996 }
1997 }
1998
1999 static char *no_pp_getline(void)
2000 {
2001 char *buffer, *p, *q;
2002 int bufsize;
2003
2004 bufsize = BUF_DELTA;
2005 buffer = nasm_malloc(BUF_DELTA);
2006 src_set_linnum(src_get_linnum() + no_pp_lineinc);
2007
2008 while (1) { /* Loop to handle %line */
2009
2010 p = buffer;
2011 while (1) { /* Loop to handle long lines */
2012 q = fgets(p, bufsize - (p - buffer), no_pp_fp);
2013 if (!q)
2014 break;
2015 p += strlen(p);
2016 if (p > buffer && p[-1] == '\n')
2017 break;
2018 if (p - buffer > bufsize - 10) {
2019 int offset;
2020 offset = p - buffer;
2021 bufsize += BUF_DELTA;
2022 buffer = nasm_realloc(buffer, bufsize);
2023 p = buffer + offset;
2024 }
2025 }
2026
2027 if (!q && p == buffer) {
2028 nasm_free(buffer);
2029 return NULL;
2030 }
2031
2032 /*
2033 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
2034 * them are present at the end of the line.
2035 */
2036 buffer[strcspn(buffer, "\r\n\032")] = '\0';
2037
2038 if (!nasm_strnicmp(buffer, "%line", 5)) {
2039 int32_t ln;
2040 int li;
2041 char *nm = nasm_malloc(strlen(buffer));
2042 if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
2043 nasm_free(src_set_fname(nm));
2044 src_set_linnum(ln);
2045 no_pp_lineinc = li;
2046 continue;
2047 }
2048 nasm_free(nm);
2049 }
2050 break;
2051 }
2052
2053 no_pp_list->line(LIST_READ, buffer);
2054
2055 return buffer;
2056 }
2057
2058 static void no_pp_cleanup(int pass)
2059 {
2060 (void)pass; /* placate GCC */
2061 fclose(no_pp_fp);
2062 }
2063
2064 static uint32_t get_cpu(char *value)
2065 {
2066 if (!strcmp(value, "8086"))
2067 return IF_8086;
2068 if (!strcmp(value, "186"))
2069 return IF_186;
2070 if (!strcmp(value, "286"))
2071 return IF_286;
2072 if (!strcmp(value, "386"))
2073 return IF_386;
2074 if (!strcmp(value, "486"))
2075 return IF_486;
2076 if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2077 return IF_PENT;
2078 if (!strcmp(value, "686") ||
2079 !nasm_stricmp(value, "ppro") ||
2080 !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2081 return IF_P6;
2082 if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2083 return IF_KATMAI;
2084 if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2085 !nasm_stricmp(value, "willamette"))
2086 return IF_WILLAMETTE;
2087 if (!nasm_stricmp(value, "prescott"))
2088 return IF_PRESCOTT;
2089 if (!nasm_stricmp(value, "x64") ||
2090 !nasm_stricmp(value, "x86-64"))
2091 return IF_X86_64;
2092 if (!nasm_stricmp(value, "ia64") ||
2093 !nasm_stricmp(value, "ia-64") ||
2094 !nasm_stricmp(value, "itanium") ||
2095 !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2096 return IF_IA64;
2097
2098 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2099 "unknown 'cpu' type");
2100
2101 return IF_PLEVEL; /* the maximum level */
2102 }
2103
2104 static int get_bits(char *value)
2105 {
2106 int i;
2107
2108 if ((i = atoi(value)) == 16)
2109 return i; /* set for a 16-bit segment */
2110 else if (i == 32) {
2111 if (cpu < IF_386) {
2112 nasm_error(ERR_NONFATAL,
2113 "cannot specify 32-bit segment on processor below a 386");
2114 i = 16;
2115 }
2116 } else if (i == 64) {
2117 if (cpu < IF_X86_64) {
2118 nasm_error(ERR_NONFATAL,
2119 "cannot specify 64-bit segment on processor below an x86-64");
2120 i = 16;
2121 }
2122 if (i != maxbits) {
2123 nasm_error(ERR_NONFATAL,
2124 "%s output format does not support 64-bit code",
2125 ofmt->shortname);
2126 i = 16;
2127 }
2128 } else {
2129 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2130 "`%s' is not a valid segment size; must be 16, 32 or 64",
2131 value);
2132 i = 16;
2133 }
2134 return i;
2135 }
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