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changes: add Mach-O alignment issue fix
[nasm.git] / nasm.c
blobceafe51117a9c4d3c36299219ec808908c6cdb8a
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 register_output_formats(void);
74 static void report_error_gnu(int severity, const char *fmt, ...);
75 static void report_error_vc(int severity, const char *fmt, ...);
76 static void report_error_common(int severity, const char *fmt,
77 va_list args);
78 static bool is_suppressed_warning(int severity);
79 static void usage(void);
80 static efunc report_error;
81
82 static int using_debug_info, opt_verbose_info;
83 bool tasm_compatible_mode = false;
84 int pass0, passn;
85 int maxbits = 0;
86 int globalrel = 0;
87
88 time_t official_compile_time;
89
90 static char inname[FILENAME_MAX];
91 static char outname[FILENAME_MAX];
92 static char listname[FILENAME_MAX];
93 static char errname[FILENAME_MAX];
94 static int globallineno; /* for forward-reference tracking */
95 /* static int pass = 0; */
96 static struct ofmt *ofmt = NULL;
97
98 static FILE *error_file; /* Where to write error messages */
99
100 static FILE *ofile = NULL;
101 int optimizing = -1; /* number of optimization passes to take */
102 static int sb, cmd_sb = 16; /* by default */
103 static uint32_t cmd_cpu = IF_PLEVEL; /* highest level by default */
104 static uint32_t cpu = IF_PLEVEL; /* passed to insn_size & assemble.c */
105 int64_t global_offset_changed; /* referenced in labels.c */
106 int64_t prev_offset_changed;
107 int32_t stall_count;
108
109 static struct location location;
110 int in_abs_seg; /* Flag we are in ABSOLUTE seg */
111 int32_t abs_seg; /* ABSOLUTE segment basis */
112 int32_t abs_offset; /* ABSOLUTE offset */
113
114 static struct RAA *offsets;
115
116 static struct SAA *forwrefs; /* keep track of forward references */
117 static const struct forwrefinfo *forwref;
118
119 static Preproc *preproc;
120 enum op_type {
121 op_normal, /* Preprocess and assemble */
122 op_preprocess, /* Preprocess only */
123 op_depend, /* Generate dependencies */
124 };
125 static enum op_type operating_mode;
126 /* Dependency flags */
127 static bool depend_emit_phony = false;
128 static bool depend_missing_ok = false;
129 static const char *depend_target = NULL;
130 static const char *depend_file = NULL;
131
132 /*
133 * Which of the suppressible warnings are suppressed. Entry zero
134 * isn't an actual warning, but it used for -w+error/-Werror.
135 */
136
137 static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
138 static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
139
140 static const struct warning {
141 const char *name;
142 const char *help;
143 bool enabled;
144 } warnings[ERR_WARN_MAX+1] = {
145 {"error", "treat warnings as errors", false},
146 {"macro-params", "macro calls with wrong parameter count", true},
147 {"macro-selfref", "cyclic macro references", false},
148 {"macro-defaults", "macros with more default than optional parameters", true},
149 {"orphan-labels", "labels alone on lines without trailing `:'", true},
150 {"number-overflow", "numeric constant does not fit", true},
151 {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
152 {"float-overflow", "floating point overflow", true},
153 {"float-denorm", "floating point denormal", false},
154 {"float-underflow", "floating point underflow", false},
155 {"float-toolong", "too many digits in floating-point number", true},
156 {"user", "%warning directives", true},
157 };
158
159 /*
160 * This is a null preprocessor which just copies lines from input
161 * to output. It's used when someone explicitly requests that NASM
162 * not preprocess their source file.
163 */
164
165 static void no_pp_reset(char *, int, efunc, evalfunc, ListGen *, StrList **);
166 static char *no_pp_getline(void);
167 static void no_pp_cleanup(int);
168 static Preproc no_pp = {
169 no_pp_reset,
170 no_pp_getline,
171 no_pp_cleanup
172 };
173
174 /*
175 * get/set current offset...
176 */
177 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
178 raa_read(offsets,location.segment))
179 #define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
180 (void)(offsets=raa_write(offsets,location.segment,(x))))
181
182 static bool want_usage;
183 static bool terminate_after_phase;
184 int user_nolist = 0; /* fbk 9/2/00 */
185
186 static void nasm_fputs(const char *line, FILE * outfile)
187 {
188 if (outfile) {
189 fputs(line, outfile);
190 putc('\n', outfile);
191 } else
192 puts(line);
193 }
194
195 /* Convert a struct tm to a POSIX-style time constant */
196 static int64_t posix_mktime(struct tm *tm)
197 {
198 int64_t t;
199 int64_t y = tm->tm_year;
200
201 /* See IEEE 1003.1:2004, section 4.14 */
202
203 t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
204 t += tm->tm_yday;
205 t *= 24;
206 t += tm->tm_hour;
207 t *= 60;
208 t += tm->tm_min;
209 t *= 60;
210 t += tm->tm_sec;
211
212 return t;
213 }
214
215 static void define_macros_early(void)
216 {
217 char temp[128];
218 struct tm lt, *lt_p, gm, *gm_p;
219 int64_t posix_time;
220
221 lt_p = localtime(&official_compile_time);
222 if (lt_p) {
223 lt = *lt_p;
224
225 strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", &lt);
226 pp_pre_define(temp);
227 strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", &lt);
228 pp_pre_define(temp);
229 strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", &lt);
230 pp_pre_define(temp);
231 strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", &lt);
232 pp_pre_define(temp);
233 }
234
235 gm_p = gmtime(&official_compile_time);
236 if (gm_p) {
237 gm = *gm_p;
238
239 strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
240 pp_pre_define(temp);
241 strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
242 pp_pre_define(temp);
243 strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
244 pp_pre_define(temp);
245 strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
246 pp_pre_define(temp);
247 }
248
249 if (gm_p)
250 posix_time = posix_mktime(&gm);
251 else if (lt_p)
252 posix_time = posix_mktime(&lt);
253 else
254 posix_time = 0;
255
256 if (posix_time) {
257 snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
258 pp_pre_define(temp);
259 }
260 }
261
262 static void define_macros_late(void)
263 {
264 char temp[128];
265
266 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s\n",
267 ofmt->shortname);
268 pp_pre_define(temp);
269 }
270
271 static void emit_dependencies(StrList *list)
272 {
273 FILE *deps;
274 int linepos, len;
275 StrList *l, *nl;
276
277 if (depend_file && strcmp(depend_file, "-")) {
278 deps = fopen(depend_file, "w");
279 if (!deps) {
280 report_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
281 "unable to write dependency file `%s'", depend_file);
282 return;
283 }
284 } else {
285 deps = stdout;
286 }
287
288 linepos = fprintf(deps, "%s:", depend_target);
289 for (l = list; l; l = l->next) {
290 len = strlen(l->str);
291 if (linepos + len > 62) {
292 fprintf(deps, " \\\n ");
293 linepos = 1;
294 }
295 fprintf(deps, " %s", l->str);
296 linepos += len+1;
297 }
298 fprintf(deps, "\n\n");
299
300 for (l = list; l; l = nl) {
301 if (depend_emit_phony)
302 fprintf(deps, "%s:\n\n", l->str);
303
304 nl = l->next;
305 nasm_free(l);
306 }
307
308 if (deps != stdout)
309 fclose(deps);
310 }
311
312 int main(int argc, char **argv)
313 {
314 StrList *depend_list = NULL, **depend_ptr;
315
316 time(&official_compile_time);
317
318 pass0 = 0;
319 want_usage = terminate_after_phase = false;
320 report_error = report_error_gnu;
321
322 error_file = stderr;
323
324 tolower_init();
325
326 nasm_set_malloc_error(report_error);
327 offsets = raa_init();
328 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
329
330 preproc = &nasmpp;
331 operating_mode = op_normal;
332
333 seg_init();
334
335 register_output_formats();
336
337 /* Define some macros dependent on the runtime, but not
338 on the command line. */
339 define_macros_early();
340
341 parse_cmdline(argc, argv);
342
343 if (terminate_after_phase) {
344 if (want_usage)
345 usage();
346 return 1;
347 }
348
349 /* If debugging info is disabled, suppress any debug calls */
350 if (!using_debug_info)
351 ofmt->current_dfmt = &null_debug_form;
352
353 if (ofmt->stdmac)
354 pp_extra_stdmac(ofmt->stdmac);
355 parser_global_info(ofmt, &location);
356 eval_global_info(ofmt, lookup_label, &location);
357
358 /* define some macros dependent of command-line */
359 define_macros_late();
360
361 depend_ptr = (depend_file || (operating_mode == op_depend))
362 ? &depend_list : NULL;
363 if (!depend_target)
364 depend_target = outname;
365
366 switch (operating_mode) {
367 case op_depend:
368 {
369 char *line;
370
371 if (depend_missing_ok)
372 pp_include_path(NULL); /* "assume generated" */
373
374 preproc->reset(inname, 0, report_error, evaluate, &nasmlist,
375 depend_ptr);
376 if (outname[0] == '\0')
377 ofmt->filename(inname, outname, report_error);
378 ofile = NULL;
379 while ((line = preproc->getline()))
380 nasm_free(line);
381 preproc->cleanup(0);
382 }
383 break;
384
385 case op_preprocess:
386 {
387 char *line;
388 char *file_name = NULL;
389 int32_t prior_linnum = 0;
390 int lineinc = 0;
391
392 if (*outname) {
393 ofile = fopen(outname, "w");
394 if (!ofile)
395 report_error(ERR_FATAL | ERR_NOFILE,
396 "unable to open output file `%s'",
397 outname);
398 } else
399 ofile = NULL;
400
401 location.known = false;
402
403 /* pass = 1; */
404 preproc->reset(inname, 3, report_error, evaluate, &nasmlist,
405 depend_ptr);
406
407 while ((line = preproc->getline())) {
408 /*
409 * We generate %line directives if needed for later programs
410 */
411 int32_t linnum = prior_linnum += lineinc;
412 int altline = src_get(&linnum, &file_name);
413 if (altline) {
414 if (altline == 1 && lineinc == 1)
415 nasm_fputs("", ofile);
416 else {
417 lineinc = (altline != -1 || lineinc != 1);
418 fprintf(ofile ? ofile : stdout,
419 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
420 file_name);
421 }
422 prior_linnum = linnum;
423 }
424 nasm_fputs(line, ofile);
425 nasm_free(line);
426 }
427 nasm_free(file_name);
428 preproc->cleanup(0);
429 if (ofile)
430 fclose(ofile);
431 if (ofile && terminate_after_phase)
432 remove(outname);
433 }
434 break;
435
436 case op_normal:
437 {
438 /*
439 * We must call ofmt->filename _anyway_, even if the user
440 * has specified their own output file, because some
441 * formats (eg OBJ and COFF) use ofmt->filename to find out
442 * the name of the input file and then put that inside the
443 * file.
444 */
445 ofmt->filename(inname, outname, report_error);
446
447 ofile = fopen(outname, (ofmt->flags & OFMT_TEXT) ? "w" : "wb");
448 if (!ofile) {
449 report_error(ERR_FATAL | ERR_NOFILE,
450 "unable to open output file `%s'", outname);
451 }
452
453 /*
454 * We must call init_labels() before ofmt->init() since
455 * some object formats will want to define labels in their
456 * init routines. (eg OS/2 defines the FLAT group)
457 */
458 init_labels();
459
460 ofmt->init(ofile, report_error, define_label, evaluate);
461 ofmt->current_dfmt->init(ofmt, NULL, ofile, report_error);
462
463 assemble_file(inname, depend_ptr);
464
465 if (!terminate_after_phase) {
466 ofmt->cleanup(using_debug_info);
467 cleanup_labels();
468 } else {
469 /*
470 * Despite earlier comments, we need this fclose.
471 * The object output drivers only fclose on cleanup,
472 * and we just skipped that.
473 */
474 fclose (ofile);
475
476 remove(outname);
477 if (listname[0])
478 remove(listname);
479 }
480 }
481 break;
482 }
483
484 if (depend_list && !terminate_after_phase)
485 emit_dependencies(depend_list);
486
487 if (want_usage)
488 usage();
489
490 raa_free(offsets);
491 saa_free(forwrefs);
492 eval_cleanup();
493 stdscan_cleanup();
494
495 return terminate_after_phase;
496 }
497
498 /*
499 * Get a parameter for a command line option.
500 * First arg must be in the form of e.g. -f...
501 */
502 static char *get_param(char *p, char *q, bool *advance)
503 {
504 *advance = false;
505 if (p[2]) { /* the parameter's in the option */
506 p += 2;
507 while (nasm_isspace(*p))
508 p++;
509 return p;
510 }
511 if (q && q[0]) {
512 *advance = true;
513 return q;
514 }
515 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
516 "option `-%c' requires an argument", p[1]);
517 return NULL;
518 }
519
520 /*
521 * Copy a filename
522 */
523 static void copy_filename(char *dst, const char *src)
524 {
525 size_t len = strlen(src);
526
527 if (len >= (size_t)FILENAME_MAX) {
528 report_error(ERR_FATAL | ERR_NOFILE, "file name too long");
529 return;
530 }
531 strncpy(dst, src, FILENAME_MAX);
532 }
533
534 /*
535 * Convert a string to Make-safe form
536 */
537 static char *quote_for_make(const char *str)
538 {
539 const char *p;
540 char *os, *q;
541
542 size_t n = 1; /* Terminating zero */
543 size_t nbs = 0;
544
545 if (!str)
546 return NULL;
547
548 for (p = str; *p; p++) {
549 switch (*p) {
550 case ' ':
551 case '\t':
552 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
553 n += nbs + 2;
554 nbs = 0;
555 break;
556 case '$':
557 case '#':
558 nbs = 0;
559 n += 2;
560 break;
561 case '\\':
562 nbs++;
563 n++;
564 break;
565 default:
566 nbs = 0;
567 n++;
568 break;
569 }
570 }
571
572 /* Convert N backslashes at the end of filename to 2N backslashes */
573 if (nbs)
574 n += nbs;
575
576 os = q = nasm_malloc(n);
577
578 nbs = 0;
579 for (p = str; *p; p++) {
580 switch (*p) {
581 case ' ':
582 case '\t':
583 while (nbs--)
584 *q++ = '\\';
585 *q++ = '\\';
586 *q++ = *p;
587 break;
588 case '$':
589 *q++ = *p;
590 *q++ = *p;
591 nbs = 0;
592 break;
593 case '#':
594 *q++ = '\\';
595 *q++ = *p;
596 nbs = 0;
597 break;
598 case '\\':
599 *q++ = *p;
600 nbs++;
601 break;
602 default:
603 *q++ = *p;
604 nbs = 0;
605 break;
606 }
607 }
608 while (nbs--)
609 *q++ = '\\';
610
611 *q = '\0';
612
613 return os;
614 }
615
616 struct textargs {
617 const char *label;
618 int value;
619 };
620
621 #define OPT_PREFIX 0
622 #define OPT_POSTFIX 1
623 struct textargs textopts[] = {
624 {"prefix", OPT_PREFIX},
625 {"postfix", OPT_POSTFIX},
626 {NULL, 0}
627 };
628
629 static bool stopoptions = false;
630 static bool process_arg(char *p, char *q)
631 {
632 char *param;
633 int i;
634 bool advance = false;
635 bool do_warn;
636
637 if (!p || !p[0])
638 return false;
639
640 if (p[0] == '-' && !stopoptions) {
641 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
642 /* These parameters take values */
643 if (!(param = get_param(p, q, &advance)))
644 return advance;
645 }
646
647 switch (p[1]) {
648 case 's':
649 error_file = stdout;
650 break;
651
652 case 'o': /* output file */
653 copy_filename(outname, param);
654 break;
655
656 case 'f': /* output format */
657 ofmt = ofmt_find(param);
658 if (!ofmt) {
659 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
660 "unrecognised output format `%s' - "
661 "use -hf for a list", param);
662 }
663 break;
664
665 case 'O': /* Optimization level */
666 {
667 int opt;
668
669 if (!*param) {
670 /* Naked -O == -Ox */
671 optimizing = INT_MAX >> 1; /* Almost unlimited */
672 } else {
673 while (*param) {
674 switch (*param) {
675 case '0': case '1': case '2': case '3': case '4':
676 case '5': case '6': case '7': case '8': case '9':
677 opt = strtoul(param, &param, 10);
678
679 /* -O0 -> optimizing == -1, 0.98 behaviour */
680 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
681 if (opt < 2)
682 optimizing = opt - 1;
683 else
684 optimizing = opt;
685 break;
686
687 case 'v':
688 case '+':
689 param++;
690 opt_verbose_info = true;
691 break;
692
693 case 'x':
694 param++;
695 optimizing = INT_MAX >> 1; /* Almost unlimited */
696 break;
697
698 default:
699 report_error(ERR_FATAL,
700 "unknown optimization option -O%c\n",
701 *param);
702 break;
703 }
704 }
705 }
706 break;
707 }
708
709 case 'p': /* pre-include */
710 case 'P':
711 pp_pre_include(param);
712 break;
713
714 case 'd': /* pre-define */
715 case 'D':
716 pp_pre_define(param);
717 break;
718
719 case 'u': /* un-define */
720 case 'U':
721 pp_pre_undefine(param);
722 break;
723
724 case 'i': /* include search path */
725 case 'I':
726 pp_include_path(param);
727 break;
728
729 case 'l': /* listing file */
730 copy_filename(listname, param);
731 break;
732
733 case 'Z': /* error messages file */
734 strcpy(errname, param);
735 break;
736
737 case 'F': /* specify debug format */
738 ofmt->current_dfmt = dfmt_find(ofmt, param);
739 if (!ofmt->current_dfmt) {
740 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
741 "unrecognized debug format `%s' for"
742 " output format `%s'",
743 param, ofmt->shortname);
744 }
745 using_debug_info = true;
746 break;
747
748 case 'X': /* specify error reporting format */
749 if (nasm_stricmp("vc", param) == 0)
750 report_error = report_error_vc;
751 else if (nasm_stricmp("gnu", param) == 0)
752 report_error = report_error_gnu;
753 else
754 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
755 "unrecognized error reporting format `%s'",
756 param);
757 break;
758
759 case 'g':
760 using_debug_info = true;
761 break;
762
763 case 'h':
764 printf
765 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
766 "[-l listfile]\n"
767 " [options...] [--] filename\n"
768 " or nasm -v for version info\n\n"
769 " -t assemble in SciTech TASM compatible mode\n"
770 " -g generate debug information in selected format.\n");
771 printf
772 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
773 " -a don't preprocess (assemble only)\n"
774 " -M generate Makefile dependencies on stdout\n"
775 " -MG d:o, missing files assumed generated\n\n"
776 " -Z<file> redirect error messages to file\n"
777 " -s redirect error messages to stdout\n\n"
778 " -F format select a debugging format\n\n"
779 " -I<path> adds a pathname to the include file path\n");
780 printf
781 (" -O<digit> optimize branch offsets (-O0 disables, default)\n"
782 " -P<file> pre-includes a file\n"
783 " -D<macro>[=<value>] pre-defines a macro\n"
784 " -U<macro> undefines a macro\n"
785 " -X<format> specifies error reporting format (gnu or vc)\n"
786 " -w+foo enables warning foo (equiv. -Wfoo)\n"
787 " -w-foo disable warning foo (equiv. -Wno-foo)\n"
788 "Warnings:\n");
789 for (i = 0; i <= ERR_WARN_MAX; i++)
790 printf(" %-23s %s (default %s)\n",
791 warnings[i].name, warnings[i].help,
792 warnings[i].enabled ? "on" : "off");
793 printf
794 ("\nresponse files should contain command line parameters"
795 ", one per line.\n");
796 if (p[2] == 'f') {
797 printf("\nvalid output formats for -f are"
798 " (`*' denotes default):\n");
799 ofmt_list(ofmt, stdout);
800 } else {
801 printf("\nFor a list of valid output formats, use -hf.\n");
802 printf("For a list of debug formats, use -f <form> -y.\n");
803 }
804 exit(0); /* never need usage message here */
805 break;
806
807 case 'y':
808 printf("\nvalid debug formats for '%s' output format are"
809 " ('*' denotes default):\n", ofmt->shortname);
810 dfmt_list(ofmt, stdout);
811 exit(0);
812 break;
813
814 case 't':
815 tasm_compatible_mode = true;
816 break;
817
818 case 'v':
819 printf("NASM version %s compiled on %s%s\n",
820 nasm_version, nasm_date, nasm_compile_options);
821 exit(0); /* never need usage message here */
822 break;
823
824 case 'e': /* preprocess only */
825 case 'E':
826 operating_mode = op_preprocess;
827 break;
828
829 case 'a': /* assemble only - don't preprocess */
830 preproc = &no_pp;
831 break;
832
833 case 'W':
834 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
835 do_warn = false;
836 param += 3;
837 } else {
838 do_warn = true;
839 }
840 goto set_warning;
841
842 case 'w':
843 if (param[0] != '+' && param[0] != '-') {
844 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
845 "invalid option to `-w'");
846 break;
847 }
848 do_warn = (param[0] == '+');
849 param++;
850 goto set_warning;
851 set_warning:
852 for (i = 0; i <= ERR_WARN_MAX; i++)
853 if (!nasm_stricmp(param, warnings[i].name))
854 break;
855 if (i <= ERR_WARN_MAX)
856 warning_on_global[i] = do_warn;
857 else if (!nasm_stricmp(param, "all"))
858 for (i = 1; i <= ERR_WARN_MAX; i++)
859 warning_on_global[i] = do_warn;
860 else if (!nasm_stricmp(param, "none"))
861 for (i = 1; i <= ERR_WARN_MAX; i++)
862 warning_on_global[i] = !do_warn;
863 else
864 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
865 "invalid warning `%s'", param);
866 break;
867
868 case 'M':
869 switch (p[2]) {
870 case 0:
871 operating_mode = op_depend;
872 break;
873 case 'G':
874 operating_mode = op_depend;
875 depend_missing_ok = true;
876 break;
877 case 'P':
878 depend_emit_phony = true;
879 break;
880 case 'D':
881 depend_file = q;
882 advance = true;
883 break;
884 case 'T':
885 depend_target = q;
886 advance = true;
887 break;
888 case 'Q':
889 depend_target = quote_for_make(q);
890 advance = true;
891 break;
892 default:
893 report_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
894 "unknown dependency option `-M%c'", p[2]);
895 break;
896 }
897 if (advance && (!q || !q[0])) {
898 report_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
899 "option `-M%c' requires a parameter", p[2]);
900 break;
901 }
902 break;
903
904 case '-':
905 {
906 int s;
907
908 if (p[2] == 0) { /* -- => stop processing options */
909 stopoptions = 1;
910 break;
911 }
912 for (s = 0; textopts[s].label; s++) {
913 if (!nasm_stricmp(p + 2, textopts[s].label)) {
914 break;
915 }
916 }
917
918 switch (s) {
919
920 case OPT_PREFIX:
921 case OPT_POSTFIX:
922 {
923 if (!q) {
924 report_error(ERR_NONFATAL | ERR_NOFILE |
925 ERR_USAGE,
926 "option `--%s' requires an argument",
927 p + 2);
928 break;
929 } else {
930 advance = 1, param = q;
931 }
932
933 if (s == OPT_PREFIX) {
934 strncpy(lprefix, param, PREFIX_MAX - 1);
935 lprefix[PREFIX_MAX - 1] = 0;
936 break;
937 }
938 if (s == OPT_POSTFIX) {
939 strncpy(lpostfix, param, POSTFIX_MAX - 1);
940 lpostfix[POSTFIX_MAX - 1] = 0;
941 break;
942 }
943 break;
944 }
945 default:
946 {
947 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
948 "unrecognised option `--%s'", p + 2);
949 break;
950 }
951 }
952 break;
953 }
954
955 default:
956 if (!ofmt->setinfo(GI_SWITCH, &p))
957 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
958 "unrecognised option `-%c'", p[1]);
959 break;
960 }
961 } else {
962 if (*inname) {
963 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
964 "more than one input file specified");
965 } else {
966 copy_filename(inname, p);
967 }
968 }
969
970 return advance;
971 }
972
973 #define ARG_BUF_DELTA 128
974
975 static void process_respfile(FILE * rfile)
976 {
977 char *buffer, *p, *q, *prevarg;
978 int bufsize, prevargsize;
979
980 bufsize = prevargsize = ARG_BUF_DELTA;
981 buffer = nasm_malloc(ARG_BUF_DELTA);
982 prevarg = nasm_malloc(ARG_BUF_DELTA);
983 prevarg[0] = '\0';
984
985 while (1) { /* Loop to handle all lines in file */
986 p = buffer;
987 while (1) { /* Loop to handle long lines */
988 q = fgets(p, bufsize - (p - buffer), rfile);
989 if (!q)
990 break;
991 p += strlen(p);
992 if (p > buffer && p[-1] == '\n')
993 break;
994 if (p - buffer > bufsize - 10) {
995 int offset;
996 offset = p - buffer;
997 bufsize += ARG_BUF_DELTA;
998 buffer = nasm_realloc(buffer, bufsize);
999 p = buffer + offset;
1000 }
1001 }
1002
1003 if (!q && p == buffer) {
1004 if (prevarg[0])
1005 process_arg(prevarg, NULL);
1006 nasm_free(buffer);
1007 nasm_free(prevarg);
1008 return;
1009 }
1010
1011 /*
1012 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1013 * them are present at the end of the line.
1014 */
1015 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
1016
1017 while (p > buffer && nasm_isspace(p[-1]))
1018 *--p = '\0';
1019
1020 p = buffer;
1021 while (nasm_isspace(*p))
1022 p++;
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 report_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 report_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 report_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 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1149 "cannot open file `%s' for error messages",
1150 errname);
1151 }
1152 }
1153 }
1154
1155 /* List of directives */
1156 enum directives {
1157 D_NONE, D_ABSOLUTE, D_BITS, D_COMMON, D_CPU, D_DEBUG, D_DEFAULT,
1158 D_EXTERN, D_FLOAT, D_GLOBAL, D_LIST, D_SECTION, D_SEGMENT, D_WARNING
1159 };
1160 static const char *directives[] = {
1161 "", "absolute", "bits", "common", "cpu", "debug", "default",
1162 "extern", "float", "global", "list", "section", "segment", "warning"
1163 };
1164 static enum directives getkw(char **directive, char **value);
1165
1166 static void assemble_file(char *fname, StrList **depend_ptr)
1167 {
1168 char *directive, *value, *p, *q, *special, *line, debugid[80];
1169 insn output_ins;
1170 int i, validid;
1171 bool rn_error;
1172 int32_t seg;
1173 int64_t offs;
1174 struct tokenval tokval;
1175 expr *e;
1176 int pass_max;
1177
1178 if (cmd_sb == 32 && cmd_cpu < IF_386)
1179 report_error(ERR_FATAL, "command line: "
1180 "32-bit segment size requires a higher cpu");
1181
1182 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1183 for (passn = 1; pass0 <= 2; passn++) {
1184 int pass1, pass2;
1185 ldfunc def_label;
1186
1187 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1188 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1189 /* pass0 0, 0, 0, ..., 1, 2 */
1190
1191 def_label = passn > 1 ? redefine_label : define_label;
1192
1193 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1194 cpu = cmd_cpu;
1195 if (pass0 == 2) {
1196 if (*listname)
1197 nasmlist.init(listname, report_error);
1198 }
1199 in_abs_seg = false;
1200 global_offset_changed = 0; /* set by redefine_label */
1201 location.segment = ofmt->section(NULL, pass2, &sb);
1202 globalbits = sb;
1203 if (passn > 1) {
1204 saa_rewind(forwrefs);
1205 forwref = saa_rstruct(forwrefs);
1206 raa_free(offsets);
1207 offsets = raa_init();
1208 }
1209 preproc->reset(fname, pass1, report_error, evaluate, &nasmlist,
1210 pass1 == 2 ? depend_ptr : NULL);
1211 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1212
1213 globallineno = 0;
1214 if (passn == 1)
1215 location.known = true;
1216 location.offset = offs = GET_CURR_OFFS;
1217
1218 while ((line = preproc->getline())) {
1219 enum directives d;
1220 globallineno++;
1221
1222 /*
1223 * Here we parse our directives; this is not handled by the
1224 * 'real' parser. This really should be a separate function.
1225 */
1226 directive = line;
1227 d = getkw(&directive, &value);
1228 if (d) {
1229 int err = 0;
1230
1231 switch (d) {
1232 case D_SEGMENT: /* [SEGMENT n] */
1233 case D_SECTION:
1234 seg = ofmt->section(value, pass2, &sb);
1235 if (seg == NO_SEG) {
1236 report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1237 "segment name `%s' not recognized",
1238 value);
1239 } else {
1240 in_abs_seg = false;
1241 location.segment = seg;
1242 }
1243 break;
1244 case D_EXTERN: /* [EXTERN label:special] */
1245 if (*value == '$')
1246 value++; /* skip initial $ if present */
1247 if (pass0 == 2) {
1248 q = value;
1249 while (*q && *q != ':')
1250 q++;
1251 if (*q == ':') {
1252 *q++ = '\0';
1253 ofmt->symdef(value, 0L, 0L, 3, q);
1254 }
1255 } else if (passn == 1) {
1256 q = value;
1257 validid = true;
1258 if (!isidstart(*q))
1259 validid = false;
1260 while (*q && *q != ':') {
1261 if (!isidchar(*q))
1262 validid = false;
1263 q++;
1264 }
1265 if (!validid) {
1266 report_error(ERR_NONFATAL,
1267 "identifier expected after EXTERN");
1268 break;
1269 }
1270 if (*q == ':') {
1271 *q++ = '\0';
1272 special = q;
1273 } else
1274 special = NULL;
1275 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1276 int temp = pass0;
1277 pass0 = 1; /* fake pass 1 in labels.c */
1278 declare_as_global(value, special,
1279 report_error);
1280 define_label(value, seg_alloc(), 0L, NULL,
1281 false, true, ofmt, report_error);
1282 pass0 = temp;
1283 }
1284 } /* else pass0 == 1 */
1285 break;
1286 case D_BITS: /* [BITS bits] */
1287 globalbits = sb = get_bits(value);
1288 break;
1289 case D_GLOBAL: /* [GLOBAL symbol:special] */
1290 if (*value == '$')
1291 value++; /* skip initial $ if present */
1292 if (pass0 == 2) { /* pass 2 */
1293 q = value;
1294 while (*q && *q != ':')
1295 q++;
1296 if (*q == ':') {
1297 *q++ = '\0';
1298 ofmt->symdef(value, 0L, 0L, 3, q);
1299 }
1300 } else if (pass2 == 1) { /* pass == 1 */
1301 q = value;
1302 validid = true;
1303 if (!isidstart(*q))
1304 validid = false;
1305 while (*q && *q != ':') {
1306 if (!isidchar(*q))
1307 validid = false;
1308 q++;
1309 }
1310 if (!validid) {
1311 report_error(ERR_NONFATAL,
1312 "identifier expected after GLOBAL");
1313 break;
1314 }
1315 if (*q == ':') {
1316 *q++ = '\0';
1317 special = q;
1318 } else
1319 special = NULL;
1320 declare_as_global(value, special, report_error);
1321 } /* pass == 1 */
1322 break;
1323 case D_COMMON: /* [COMMON symbol size:special] */
1324 {
1325 int64_t size;
1326
1327 if (*value == '$')
1328 value++; /* skip initial $ if present */
1329 p = value;
1330 validid = true;
1331 if (!isidstart(*p))
1332 validid = false;
1333 while (*p && !nasm_isspace(*p)) {
1334 if (!isidchar(*p))
1335 validid = false;
1336 p++;
1337 }
1338 if (!validid) {
1339 report_error(ERR_NONFATAL,
1340 "identifier expected after COMMON");
1341 break;
1342 }
1343 if (*p) {
1344 while (*p && nasm_isspace(*p))
1345 *p++ = '\0';
1346 q = p;
1347 while (*q && *q != ':')
1348 q++;
1349 if (*q == ':') {
1350 *q++ = '\0';
1351 special = q;
1352 } else {
1353 special = NULL;
1354 }
1355 size = readnum(p, &rn_error);
1356 if (rn_error) {
1357 report_error(ERR_NONFATAL,
1358 "invalid size specified"
1359 " in COMMON declaration");
1360 break;
1361 }
1362 } else {
1363 report_error(ERR_NONFATAL,
1364 "no size specified in"
1365 " COMMON declaration");
1366 break;
1367 }
1368
1369 if (pass0 < 2) {
1370 define_common(value, seg_alloc(), size,
1371 special, ofmt, report_error);
1372 } else if (pass0 == 2) {
1373 ofmt->symdef(value, 0L, 0L, 3, special);
1374 }
1375 break;
1376 }
1377 case D_ABSOLUTE: /* [ABSOLUTE address] */
1378 stdscan_reset();
1379 stdscan_bufptr = value;
1380 tokval.t_type = TOKEN_INVALID;
1381 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1382 report_error, NULL);
1383 if (e) {
1384 if (!is_reloc(e))
1385 report_error(pass0 ==
1386 1 ? ERR_NONFATAL : ERR_PANIC,
1387 "cannot use non-relocatable expression as "
1388 "ABSOLUTE address");
1389 else {
1390 abs_seg = reloc_seg(e);
1391 abs_offset = reloc_value(e);
1392 }
1393 } else if (passn == 1)
1394 abs_offset = 0x100; /* don't go near zero in case of / */
1395 else
1396 report_error(ERR_PANIC, "invalid ABSOLUTE address "
1397 "in pass two");
1398 in_abs_seg = true;
1399 location.segment = NO_SEG;
1400 break;
1401 case D_DEBUG: /* [DEBUG] */
1402 p = value;
1403 q = debugid;
1404 validid = true;
1405 if (!isidstart(*p))
1406 validid = false;
1407 while (*p && !nasm_isspace(*p)) {
1408 if (!isidchar(*p))
1409 validid = false;
1410 *q++ = *p++;
1411 }
1412 *q++ = 0;
1413 if (!validid) {
1414 report_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1415 "identifier expected after DEBUG");
1416 break;
1417 }
1418 while (*p && nasm_isspace(*p))
1419 p++;
1420 if (pass0 == 2)
1421 ofmt->current_dfmt->debug_directive(debugid, p);
1422 break;
1423 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1424 while (*value && nasm_isspace(*value))
1425 value++;
1426
1427 switch(*value) {
1428 case '-': validid = 0; value++; break;
1429 case '+': validid = 1; value++; break;
1430 case '*': validid = 2; value++; break;
1431 default: validid = 1; break;
1432 }
1433
1434 for (i = 1; i <= ERR_WARN_MAX; i++)
1435 if (!nasm_stricmp(value, warnings[i].name))
1436 break;
1437 if (i <= ERR_WARN_MAX) {
1438 switch(validid) {
1439 case 0:
1440 warning_on[i] = false;
1441 break;
1442 case 1:
1443 warning_on[i] = true;
1444 break;
1445 case 2:
1446 warning_on[i] = warning_on_global[i];
1447 break;
1448 }
1449 }
1450 else
1451 report_error(ERR_NONFATAL,
1452 "invalid warning id in WARNING directive");
1453 break;
1454 case D_CPU: /* [CPU] */
1455 cpu = get_cpu(value);
1456 break;
1457 case D_LIST: /* [LIST {+|-}] */
1458 while (*value && nasm_isspace(*value))
1459 value++;
1460
1461 if (*value == '+') {
1462 user_nolist = 0;
1463 } else {
1464 if (*value == '-') {
1465 user_nolist = 1;
1466 } else {
1467 err = 1;
1468 }
1469 }
1470 break;
1471 case D_DEFAULT: /* [DEFAULT] */
1472 stdscan_reset();
1473 stdscan_bufptr = value;
1474 tokval.t_type = TOKEN_INVALID;
1475 if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1476 switch ((int)tokval.t_integer) {
1477 case S_REL:
1478 globalrel = 1;
1479 break;
1480 case S_ABS:
1481 globalrel = 0;
1482 break;
1483 default:
1484 err = 1;
1485 break;
1486 }
1487 } else {
1488 err = 1;
1489 }
1490 break;
1491 case D_FLOAT:
1492 if (float_option(value)) {
1493 report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1494 "unknown 'float' directive: %s",
1495 value);
1496 }
1497 break;
1498 default:
1499 if (!ofmt->directive(directive, value, pass2))
1500 report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1501 "unrecognised directive [%s]",
1502 directive);
1503 }
1504 if (err) {
1505 report_error(ERR_NONFATAL,
1506 "invalid parameter to [%s] directive",
1507 directive);
1508 }
1509 } else { /* it isn't a directive */
1510
1511 parse_line(pass1, line, &output_ins,
1512 report_error, evaluate, def_label);
1513
1514 if (optimizing > 0) {
1515 if (forwref != NULL && globallineno == forwref->lineno) {
1516 output_ins.forw_ref = true;
1517 do {
1518 output_ins.oprs[forwref->operand].opflags |=
1519 OPFLAG_FORWARD;
1520 forwref = saa_rstruct(forwrefs);
1521 } while (forwref != NULL
1522 && forwref->lineno == globallineno);
1523 } else
1524 output_ins.forw_ref = false;
1525
1526 if (output_ins.forw_ref) {
1527 if (passn == 1) {
1528 for (i = 0; i < output_ins.operands; i++) {
1529 if (output_ins.oprs[i].
1530 opflags & OPFLAG_FORWARD) {
1531 struct forwrefinfo *fwinf =
1532 (struct forwrefinfo *)
1533 saa_wstruct(forwrefs);
1534 fwinf->lineno = globallineno;
1535 fwinf->operand = i;
1536 }
1537 }
1538 }
1539 }
1540 }
1541
1542 /* forw_ref */
1543 if (output_ins.opcode == I_EQU) {
1544 if (pass1 == 1) {
1545 /*
1546 * Special `..' EQUs get processed in pass two,
1547 * except `..@' macro-processor EQUs which are done
1548 * in the normal place.
1549 */
1550 if (!output_ins.label)
1551 report_error(ERR_NONFATAL,
1552 "EQU not preceded by label");
1553
1554 else if (output_ins.label[0] != '.' ||
1555 output_ins.label[1] != '.' ||
1556 output_ins.label[2] == '@') {
1557 if (output_ins.operands == 1 &&
1558 (output_ins.oprs[0].type & IMMEDIATE) &&
1559 output_ins.oprs[0].wrt == NO_SEG) {
1560 bool isext = !!(output_ins.oprs[0].opflags
1561 & OPFLAG_EXTERN);
1562 def_label(output_ins.label,
1563 output_ins.oprs[0].segment,
1564 output_ins.oprs[0].offset, NULL,
1565 false, isext, ofmt,
1566 report_error);
1567 } else if (output_ins.operands == 2
1568 && (output_ins.oprs[0].type & IMMEDIATE)
1569 && (output_ins.oprs[0].type & COLON)
1570 && output_ins.oprs[0].segment == NO_SEG
1571 && output_ins.oprs[0].wrt == NO_SEG
1572 && (output_ins.oprs[1].type & IMMEDIATE)
1573 && output_ins.oprs[1].segment == NO_SEG
1574 && output_ins.oprs[1].wrt == NO_SEG) {
1575 def_label(output_ins.label,
1576 output_ins.oprs[0].offset | SEG_ABS,
1577 output_ins.oprs[1].offset,
1578 NULL, false, false, ofmt,
1579 report_error);
1580 } else
1581 report_error(ERR_NONFATAL,
1582 "bad syntax for EQU");
1583 }
1584 } else {
1585 /*
1586 * Special `..' EQUs get processed here, except
1587 * `..@' macro processor EQUs which are done above.
1588 */
1589 if (output_ins.label[0] == '.' &&
1590 output_ins.label[1] == '.' &&
1591 output_ins.label[2] != '@') {
1592 if (output_ins.operands == 1 &&
1593 (output_ins.oprs[0].type & IMMEDIATE)) {
1594 define_label(output_ins.label,
1595 output_ins.oprs[0].segment,
1596 output_ins.oprs[0].offset,
1597 NULL, false, false, ofmt,
1598 report_error);
1599 } else if (output_ins.operands == 2
1600 && (output_ins.oprs[0].
1601 type & IMMEDIATE)
1602 && (output_ins.oprs[0].type & COLON)
1603 && output_ins.oprs[0].segment ==
1604 NO_SEG
1605 && (output_ins.oprs[1].
1606 type & IMMEDIATE)
1607 && output_ins.oprs[1].segment ==
1608 NO_SEG) {
1609 define_label(output_ins.label,
1610 output_ins.oprs[0].
1611 offset | SEG_ABS,
1612 output_ins.oprs[1].offset,
1613 NULL, false, false, ofmt,
1614 report_error);
1615 } else
1616 report_error(ERR_NONFATAL,
1617 "bad syntax for EQU");
1618 }
1619 }
1620 } else { /* instruction isn't an EQU */
1621
1622 if (pass1 == 1) {
1623
1624 int64_t l = insn_size(location.segment, offs, sb, cpu,
1625 &output_ins, report_error);
1626
1627 /* if (using_debug_info) && output_ins.opcode != -1) */
1628 if (using_debug_info)
1629 { /* fbk 03/25/01 */
1630 /* this is done here so we can do debug type info */
1631 int32_t typeinfo =
1632 TYS_ELEMENTS(output_ins.operands);
1633 switch (output_ins.opcode) {
1634 case I_RESB:
1635 typeinfo =
1636 TYS_ELEMENTS(output_ins.oprs[0].
1637 offset) | TY_BYTE;
1638 break;
1639 case I_RESW:
1640 typeinfo =
1641 TYS_ELEMENTS(output_ins.oprs[0].
1642 offset) | TY_WORD;
1643 break;
1644 case I_RESD:
1645 typeinfo =
1646 TYS_ELEMENTS(output_ins.oprs[0].
1647 offset) | TY_DWORD;
1648 break;
1649 case I_RESQ:
1650 typeinfo =
1651 TYS_ELEMENTS(output_ins.oprs[0].
1652 offset) | TY_QWORD;
1653 break;
1654 case I_REST:
1655 typeinfo =
1656 TYS_ELEMENTS(output_ins.oprs[0].
1657 offset) | TY_TBYTE;
1658 break;
1659 case I_RESO:
1660 typeinfo =
1661 TYS_ELEMENTS(output_ins.oprs[0].
1662 offset) | TY_OWORD;
1663 break;
1664 case I_RESY:
1665 typeinfo =
1666 TYS_ELEMENTS(output_ins.oprs[0].
1667 offset) | TY_YWORD;
1668 break;
1669 case I_DB:
1670 typeinfo |= TY_BYTE;
1671 break;
1672 case I_DW:
1673 typeinfo |= TY_WORD;
1674 break;
1675 case I_DD:
1676 if (output_ins.eops_float)
1677 typeinfo |= TY_FLOAT;
1678 else
1679 typeinfo |= TY_DWORD;
1680 break;
1681 case I_DQ:
1682 typeinfo |= TY_QWORD;
1683 break;
1684 case I_DT:
1685 typeinfo |= TY_TBYTE;
1686 break;
1687 case I_DO:
1688 typeinfo |= TY_OWORD;
1689 break;
1690 case I_DY:
1691 typeinfo |= TY_YWORD;
1692 break;
1693 default:
1694 typeinfo = TY_LABEL;
1695
1696 }
1697
1698 ofmt->current_dfmt->debug_typevalue(typeinfo);
1699
1700 }
1701 if (l != -1) {
1702 offs += l;
1703 SET_CURR_OFFS(offs);
1704 }
1705 /*
1706 * else l == -1 => invalid instruction, which will be
1707 * flagged as an error on pass 2
1708 */
1709
1710 } else {
1711 offs += assemble(location.segment, offs, sb, cpu,
1712 &output_ins, ofmt, report_error,
1713 &nasmlist);
1714 SET_CURR_OFFS(offs);
1715
1716 }
1717 } /* not an EQU */
1718 cleanup_insn(&output_ins);
1719 }
1720 nasm_free(line);
1721 location.offset = offs = GET_CURR_OFFS;
1722 } /* end while (line = preproc->getline... */
1723
1724 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1725 report_error(ERR_NONFATAL,
1726 "phase error detected at end of assembly.");
1727
1728 if (pass1 == 1)
1729 preproc->cleanup(1);
1730
1731 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1732 pass0++;
1733 } else if (global_offset_changed &&
1734 global_offset_changed < prev_offset_changed) {
1735 prev_offset_changed = global_offset_changed;
1736 stall_count = 0;
1737 } else {
1738 stall_count++;
1739 }
1740
1741 if (terminate_after_phase)
1742 break;
1743
1744 if ((stall_count > 997) || (passn >= pass_max)) {
1745 /* We get here if the labels don't converge
1746 * Example: FOO equ FOO + 1
1747 */
1748 report_error(ERR_NONFATAL,
1749 "Can't find valid values for all labels "
1750 "after %d passes, giving up.", passn);
1751 report_error(ERR_NONFATAL,
1752 "Possible causes: recursive EQUs, macro abuse.");
1753 break;
1754 }
1755 }
1756
1757 preproc->cleanup(0);
1758 nasmlist.cleanup();
1759 if (!terminate_after_phase && opt_verbose_info) {
1760 /* -On and -Ov switches */
1761 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1762 }
1763 }
1764
1765 static enum directives getkw(char **directive, char **value)
1766 {
1767 char *p, *q, *buf;
1768
1769 buf = *directive;
1770
1771 /* allow leading spaces or tabs */
1772 while (*buf == ' ' || *buf == '\t')
1773 buf++;
1774
1775 if (*buf != '[')
1776 return 0;
1777
1778 p = buf;
1779
1780 while (*p && *p != ']')
1781 p++;
1782
1783 if (!*p)
1784 return 0;
1785
1786 q = p++;
1787
1788 while (*p && *p != ';') {
1789 if (!nasm_isspace(*p))
1790 return 0;
1791 p++;
1792 }
1793 q[1] = '\0';
1794
1795 *directive = p = buf + 1;
1796 while (*buf && *buf != ' ' && *buf != ']' && *buf != '\t')
1797 buf++;
1798 if (*buf == ']') {
1799 *buf = '\0';
1800 *value = buf;
1801 } else {
1802 *buf++ = '\0';
1803 while (nasm_isspace(*buf))
1804 buf++; /* beppu - skip leading whitespace */
1805 *value = buf;
1806 while (*buf != ']')
1807 buf++;
1808 *buf++ = '\0';
1809 }
1810
1811 return bsii(*directive, directives, elements(directives));
1812 }
1813
1814 /**
1815 * gnu style error reporting
1816 * This function prints an error message to error_file in the
1817 * style used by GNU. An example would be:
1818 * file.asm:50: error: blah blah blah
1819 * where file.asm is the name of the file, 50 is the line number on
1820 * which the error occurs (or is detected) and "error:" is one of
1821 * the possible optional diagnostics -- it can be "error" or "warning"
1822 * or something else. Finally the line terminates with the actual
1823 * error message.
1824 *
1825 * @param severity the severity of the warning or error
1826 * @param fmt the printf style format string
1827 */
1828 static void report_error_gnu(int severity, const char *fmt, ...)
1829 {
1830 va_list ap;
1831 char *currentfile = NULL;
1832 int32_t lineno = 0;
1833
1834 if (is_suppressed_warning(severity))
1835 return;
1836
1837 if (!(severity & ERR_NOFILE))
1838 src_get(&lineno, &currentfile);
1839
1840 if (currentfile) {
1841 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1842 nasm_free(currentfile);
1843 } else {
1844 fputs("nasm: ", error_file);
1845 }
1846
1847 va_start(ap, fmt);
1848 report_error_common(severity, fmt, ap);
1849 va_end(ap);
1850 }
1851
1852 /**
1853 * MS style error reporting
1854 * This function prints an error message to error_file in the
1855 * style used by Visual C and some other Microsoft tools. An example
1856 * would be:
1857 * file.asm(50) : error: blah blah blah
1858 * where file.asm is the name of the file, 50 is the line number on
1859 * which the error occurs (or is detected) and "error:" is one of
1860 * the possible optional diagnostics -- it can be "error" or "warning"
1861 * or something else. Finally the line terminates with the actual
1862 * error message.
1863 *
1864 * @param severity the severity of the warning or error
1865 * @param fmt the printf style format string
1866 */
1867 static void report_error_vc(int severity, const char *fmt, ...)
1868 {
1869 va_list ap;
1870 char *currentfile = NULL;
1871 int32_t lineno = 0;
1872
1873 if (is_suppressed_warning(severity))
1874 return;
1875
1876 if (!(severity & ERR_NOFILE))
1877 src_get(&lineno, &currentfile);
1878
1879 if (currentfile) {
1880 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1881 nasm_free(currentfile);
1882 } else {
1883 fputs("nasm: ", error_file);
1884 }
1885
1886 va_start(ap, fmt);
1887 report_error_common(severity, fmt, ap);
1888 va_end(ap);
1889 }
1890
1891 /**
1892 * check for supressed warning
1893 * checks for suppressed warning or pass one only warning and we're
1894 * not in pass 1
1895 *
1896 * @param severity the severity of the warning or error
1897 * @return true if we should abort error/warning printing
1898 */
1899 static bool is_suppressed_warning(int severity)
1900 {
1901 /*
1902 * See if it's a suppressed warning.
1903 */
1904 return (severity & ERR_MASK) == ERR_WARNING &&
1905 (((severity & ERR_WARN_MASK) != 0 &&
1906 !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1907 /* See if it's a pass-one only warning and we're not in pass one. */
1908 ((severity & ERR_PASS1) && pass0 != 1) ||
1909 ((severity & ERR_PASS2) && pass0 != 2));
1910 }
1911
1912 /**
1913 * common error reporting
1914 * This is the common back end of the error reporting schemes currently
1915 * implemented. It prints the nature of the warning and then the
1916 * specific error message to error_file and may or may not return. It
1917 * doesn't return if the error severity is a "panic" or "debug" type.
1918 *
1919 * @param severity the severity of the warning or error
1920 * @param fmt the printf style format string
1921 */
1922 static void report_error_common(int severity, const char *fmt,
1923 va_list args)
1924 {
1925 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1926 case ERR_WARNING:
1927 fputs("warning: ", error_file);
1928 break;
1929 case ERR_NONFATAL:
1930 fputs("error: ", error_file);
1931 break;
1932 case ERR_FATAL:
1933 fputs("fatal: ", error_file);
1934 break;
1935 case ERR_PANIC:
1936 fputs("panic: ", error_file);
1937 break;
1938 case ERR_DEBUG:
1939 fputs("debug: ", error_file);
1940 break;
1941 default:
1942 break;
1943 }
1944
1945 vfprintf(error_file, fmt, args);
1946 putc('\n', error_file);
1947
1948 if (severity & ERR_USAGE)
1949 want_usage = true;
1950
1951 switch (severity & ERR_MASK) {
1952 case ERR_DEBUG:
1953 /* no further action, by definition */
1954 break;
1955 case ERR_WARNING:
1956 if (warning_on[0]) /* Treat warnings as errors */
1957 terminate_after_phase = true;
1958 break;
1959 case ERR_NONFATAL:
1960 terminate_after_phase = true;
1961 break;
1962 case ERR_FATAL:
1963 if (ofile) {
1964 fclose(ofile);
1965 remove(outname);
1966 }
1967 if (want_usage)
1968 usage();
1969 exit(1); /* instantly die */
1970 break; /* placate silly compilers */
1971 case ERR_PANIC:
1972 fflush(NULL);
1973 /* abort(); *//* halt, catch fire, and dump core */
1974 exit(3);
1975 break;
1976 }
1977 }
1978
1979 static void usage(void)
1980 {
1981 fputs("type `nasm -h' for help\n", error_file);
1982 }
1983
1984 static void register_output_formats(void)
1985 {
1986 ofmt = ofmt_register(report_error);
1987 }
1988
1989 #define BUF_DELTA 512
1990
1991 static FILE *no_pp_fp;
1992 static efunc no_pp_err;
1993 static ListGen *no_pp_list;
1994 static int32_t no_pp_lineinc;
1995
1996 static void no_pp_reset(char *file, int pass, efunc error, evalfunc eval,
1997 ListGen * listgen, StrList **deplist)
1998 {
1999 src_set_fname(nasm_strdup(file));
2000 src_set_linnum(0);
2001 no_pp_lineinc = 1;
2002 no_pp_err = error;
2003 no_pp_fp = fopen(file, "r");
2004 if (!no_pp_fp)
2005 no_pp_err(ERR_FATAL | ERR_NOFILE,
2006 "unable to open input file `%s'", file);
2007 no_pp_list = listgen;
2008 (void)pass; /* placate compilers */
2009 (void)eval; /* placate compilers */
2010
2011 if (deplist) {
2012 StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
2013 sl->next = NULL;
2014 strcpy(sl->str, file);
2015 *deplist = sl;
2016 }
2017 }
2018
2019 static char *no_pp_getline(void)
2020 {
2021 char *buffer, *p, *q;
2022 int bufsize;
2023
2024 bufsize = BUF_DELTA;
2025 buffer = nasm_malloc(BUF_DELTA);
2026 src_set_linnum(src_get_linnum() + no_pp_lineinc);
2027
2028 while (1) { /* Loop to handle %line */
2029
2030 p = buffer;
2031 while (1) { /* Loop to handle long lines */
2032 q = fgets(p, bufsize - (p - buffer), no_pp_fp);
2033 if (!q)
2034 break;
2035 p += strlen(p);
2036 if (p > buffer && p[-1] == '\n')
2037 break;
2038 if (p - buffer > bufsize - 10) {
2039 int offset;
2040 offset = p - buffer;
2041 bufsize += BUF_DELTA;
2042 buffer = nasm_realloc(buffer, bufsize);
2043 p = buffer + offset;
2044 }
2045 }
2046
2047 if (!q && p == buffer) {
2048 nasm_free(buffer);
2049 return NULL;
2050 }
2051
2052 /*
2053 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
2054 * them are present at the end of the line.
2055 */
2056 buffer[strcspn(buffer, "\r\n\032")] = '\0';
2057
2058 if (!nasm_strnicmp(buffer, "%line", 5)) {
2059 int32_t ln;
2060 int li;
2061 char *nm = nasm_malloc(strlen(buffer));
2062 if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
2063 nasm_free(src_set_fname(nm));
2064 src_set_linnum(ln);
2065 no_pp_lineinc = li;
2066 continue;
2067 }
2068 nasm_free(nm);
2069 }
2070 break;
2071 }
2072
2073 no_pp_list->line(LIST_READ, buffer);
2074
2075 return buffer;
2076 }
2077
2078 static void no_pp_cleanup(int pass)
2079 {
2080 (void)pass; /* placate GCC */
2081 fclose(no_pp_fp);
2082 }
2083
2084 static uint32_t get_cpu(char *value)
2085 {
2086 if (!strcmp(value, "8086"))
2087 return IF_8086;
2088 if (!strcmp(value, "186"))
2089 return IF_186;
2090 if (!strcmp(value, "286"))
2091 return IF_286;
2092 if (!strcmp(value, "386"))
2093 return IF_386;
2094 if (!strcmp(value, "486"))
2095 return IF_486;
2096 if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2097 return IF_PENT;
2098 if (!strcmp(value, "686") ||
2099 !nasm_stricmp(value, "ppro") ||
2100 !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2101 return IF_P6;
2102 if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2103 return IF_KATMAI;
2104 if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2105 !nasm_stricmp(value, "willamette"))
2106 return IF_WILLAMETTE;
2107 if (!nasm_stricmp(value, "prescott"))
2108 return IF_PRESCOTT;
2109 if (!nasm_stricmp(value, "x64") ||
2110 !nasm_stricmp(value, "x86-64"))
2111 return IF_X86_64;
2112 if (!nasm_stricmp(value, "ia64") ||
2113 !nasm_stricmp(value, "ia-64") ||
2114 !nasm_stricmp(value, "itanium") ||
2115 !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2116 return IF_IA64;
2117
2118 report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2119 "unknown 'cpu' type");
2120
2121 return IF_PLEVEL; /* the maximum level */
2122 }
2123
2124 static int get_bits(char *value)
2125 {
2126 int i;
2127
2128 if ((i = atoi(value)) == 16)
2129 return i; /* set for a 16-bit segment */
2130 else if (i == 32) {
2131 if (cpu < IF_386) {
2132 report_error(ERR_NONFATAL,
2133 "cannot specify 32-bit segment on processor below a 386");
2134 i = 16;
2135 }
2136 } else if (i == 64) {
2137 if (cpu < IF_X86_64) {
2138 report_error(ERR_NONFATAL,
2139 "cannot specify 64-bit segment on processor below an x86-64");
2140 i = 16;
2141 }
2142 if (i != maxbits) {
2143 report_error(ERR_NONFATAL,
2144 "%s output format does not support 64-bit code",
2145 ofmt->shortname);
2146 i = 16;
2147 }
2148 } else {
2149 report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2150 "`%s' is not a valid segment size; must be 16, 32 or 64",
2151 value);
2152 i = 16;
2153 }
2154 return i;
2155 }
2156
2157 /* end of nasm.c */
The Netwide Assembler