553521530f47c481740e148bd3af03e794238332
[platform/upstream/nasm.git] / nasm.c
1 /* The Netwide Assembler main program module
2  *
3  * The Netwide Assembler is copyright (C) 1996 Simon Tatham and
4  * Julian Hall. All rights reserved. The software is
5  * redistributable under the license given in the file "LICENSE"
6  * distributed in the NASM archive.
7  */
8
9 #include "compiler.h"
10
11 #include <stdio.h>
12 #include <stdarg.h>
13 #include <stdlib.h>
14 #include <string.h>
15 #include <ctype.h>
16 #include <inttypes.h>
17 #include <limits.h>
18 #include <time.h>
19
20 #include "nasm.h"
21 #include "nasmlib.h"
22 #include "saa.h"
23 #include "raa.h"
24 #include "float.h"
25 #include "stdscan.h"
26 #include "insns.h"
27 #include "preproc.h"
28 #include "parser.h"
29 #include "eval.h"
30 #include "assemble.h"
31 #include "labels.h"
32 #include "outform.h"
33 #include "listing.h"
34
35 struct forwrefinfo {            /* info held on forward refs. */
36     int lineno;
37     int operand;
38 };
39
40 static int get_bits(char *value);
41 static uint32_t get_cpu(char *cpu_str);
42 static void parse_cmdline(int, char **);
43 static void assemble_file(char *, StrList **);
44 static void register_output_formats(void);
45 static void report_error_gnu(int severity, const char *fmt, ...);
46 static void report_error_vc(int severity, const char *fmt, ...);
47 static void report_error_common(int severity, const char *fmt,
48                                 va_list args);
49 static bool is_suppressed_warning(int severity);
50 static void usage(void);
51 static efunc report_error;
52
53 static int using_debug_info, opt_verbose_info;
54 bool tasm_compatible_mode = false;
55 int pass0, passn;
56 int maxbits = 0;
57 int globalrel = 0;
58
59 time_t official_compile_time;
60
61 static char inname[FILENAME_MAX];
62 static char outname[FILENAME_MAX];
63 static char listname[FILENAME_MAX];
64 static char errname[FILENAME_MAX];
65 static int globallineno;        /* for forward-reference tracking */
66 /* static int pass = 0; */
67 static struct ofmt *ofmt = NULL;
68
69 static FILE *error_file;        /* Where to write error messages */
70
71 static FILE *ofile = NULL;
72 int optimizing = -1;            /* number of optimization passes to take */
73 static int sb, cmd_sb = 16;     /* by default */
74 static uint32_t cmd_cpu = IF_PLEVEL;       /* highest level by default */
75 static uint32_t cpu = IF_PLEVEL;   /* passed to insn_size & assemble.c */
76 int64_t global_offset_changed;      /* referenced in labels.c */
77 int64_t prev_offset_changed;
78 int32_t stall_count;
79
80 static struct location location;
81 int in_abs_seg;                 /* Flag we are in ABSOLUTE seg */
82 int32_t abs_seg;                   /* ABSOLUTE segment basis */
83 int32_t abs_offset;                /* ABSOLUTE offset */
84
85 static struct RAA *offsets;
86
87 static struct SAA *forwrefs;    /* keep track of forward references */
88 static const struct forwrefinfo *forwref;
89
90 static Preproc *preproc;
91 enum op_type {
92     op_normal,                  /* Preprocess and assemble */
93     op_preprocess,              /* Preprocess only */
94     op_depend,                  /* Generate dependencies */
95 };
96 static enum op_type operating_mode;
97 /* Dependency flags */
98 static bool depend_emit_phony = false;
99 static bool depend_missing_ok = false;
100 static const char *depend_target = NULL;
101 static const char *depend_file = NULL;
102
103 /*
104  * Which of the suppressible warnings are suppressed. Entry zero
105  * isn't an actual warning, but it used for -w+error/-Werror.
106  */
107
108 static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
109 static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
110
111 static const struct warning {
112     const char *name;
113     const char *help;
114     bool enabled;
115 } warnings[ERR_WARN_MAX+1] = {
116     {"error", "treat warnings as errors", false},
117     {"macro-params", "macro calls with wrong parameter count", true},
118     {"macro-selfref", "cyclic macro references", false},
119     {"macro-defaults", "macros with more default than optional parameters", true},
120     {"orphan-labels", "labels alone on lines without trailing `:'", true},
121     {"number-overflow", "numeric constant does not fit", true},
122     {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
123     {"float-overflow", "floating point overflow", true},
124     {"float-denorm", "floating point denormal", false},
125     {"float-underflow", "floating point underflow", false},
126     {"float-toolong", "too many digits in floating-point number", true},
127     {"user", "%warning directives", true},
128 };
129
130 /*
131  * This is a null preprocessor which just copies lines from input
132  * to output. It's used when someone explicitly requests that NASM
133  * not preprocess their source file.
134  */
135
136 static void no_pp_reset(char *, int, efunc, evalfunc, ListGen *, StrList **);
137 static char *no_pp_getline(void);
138 static void no_pp_cleanup(int);
139 static Preproc no_pp = {
140     no_pp_reset,
141     no_pp_getline,
142     no_pp_cleanup
143 };
144
145 /*
146  * get/set current offset...
147  */
148 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
149                       raa_read(offsets,location.segment))
150 #define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
151                          (void)(offsets=raa_write(offsets,location.segment,(x))))
152
153 static bool want_usage;
154 static bool terminate_after_phase;
155 int user_nolist = 0;            /* fbk 9/2/00 */
156
157 static void nasm_fputs(const char *line, FILE * outfile)
158 {
159     if (outfile) {
160         fputs(line, outfile);
161         putc('\n', outfile);
162     } else
163         puts(line);
164 }
165
166 /* Convert a struct tm to a POSIX-style time constant */
167 static int64_t posix_mktime(struct tm *tm)
168 {
169     int64_t t;
170     int64_t y = tm->tm_year;
171
172     /* See IEEE 1003.1:2004, section 4.14 */
173
174     t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
175     t += tm->tm_yday;
176     t *= 24;
177     t += tm->tm_hour;
178     t *= 60;
179     t += tm->tm_min;
180     t *= 60;
181     t += tm->tm_sec;
182
183     return t;
184 }
185
186 static void define_macros_early(void)
187 {
188     char temp[128];
189     struct tm lt, *lt_p, gm, *gm_p;
190     int64_t posix_time;
191
192     lt_p = localtime(&official_compile_time);
193     if (lt_p) {
194         lt = *lt_p;
195
196         strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", &lt);
197         pp_pre_define(temp);
198         strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", &lt);
199         pp_pre_define(temp);
200         strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", &lt);
201         pp_pre_define(temp);
202         strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", &lt);
203         pp_pre_define(temp);
204     }
205
206     gm_p = gmtime(&official_compile_time);
207     if (gm_p) {
208         gm = *gm_p;
209
210         strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
211         pp_pre_define(temp);
212         strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
213         pp_pre_define(temp);
214         strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
215         pp_pre_define(temp);
216         strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
217         pp_pre_define(temp);
218     }
219
220     if (gm_p)
221         posix_time = posix_mktime(&gm);
222     else if (lt_p)
223         posix_time = posix_mktime(&lt);
224     else
225         posix_time = 0;
226
227     if (posix_time) {
228         snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
229         pp_pre_define(temp);
230     }
231 }
232
233 static void define_macros_late(void)
234 {
235     char temp[128];
236
237     snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s\n",
238              ofmt->shortname);
239     pp_pre_define(temp);
240 }
241
242 static void emit_dependencies(StrList *list)
243 {
244     FILE *deps;
245     int linepos, len;
246     StrList *l, *nl;
247
248     if (depend_file && strcmp(depend_file, "-")) {
249         deps = fopen(depend_file, "w");
250         if (!deps) {
251             report_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
252                          "unable to write dependency file `%s'", depend_file);
253             return;
254         }
255     } else {
256         deps = stdout;
257     }
258     
259     linepos = fprintf(deps, "%s:", depend_target);
260     for (l = list; l; l = l->next) {
261         len = strlen(l->str);
262         if (linepos + len > 62) {
263             fprintf(deps, " \\\n ");
264             linepos = 1;
265         }
266         fprintf(deps, " %s", l->str);
267         linepos += len+1;
268     }
269     fprintf(deps, "\n\n");
270     
271     for (l = list; l; l = nl) {
272         if (depend_emit_phony)
273             fprintf(deps, "%s:\n\n", l->str);
274             
275         nl = l->next;
276         nasm_free(l);
277     }
278
279     if (deps != stdout)
280         fclose(deps);
281 }
282
283 int main(int argc, char **argv)
284 {
285     StrList *depend_list = NULL, **depend_ptr;
286
287     time(&official_compile_time);
288
289     pass0 = 0;
290     want_usage = terminate_after_phase = false;
291     report_error = report_error_gnu;
292
293     error_file = stderr;
294
295     tolower_init();
296
297     nasm_set_malloc_error(report_error);
298     offsets = raa_init();
299     forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
300
301     preproc = &nasmpp;
302     operating_mode = op_normal;
303
304     seg_init();
305
306     register_output_formats();
307
308     /* Define some macros dependent on the runtime, but not
309        on the command line. */
310     define_macros_early();
311
312     parse_cmdline(argc, argv);
313
314     if (terminate_after_phase) {
315         if (want_usage)
316             usage();
317         return 1;
318     }
319
320     /* If debugging info is disabled, suppress any debug calls */
321     if (!using_debug_info)
322         ofmt->current_dfmt = &null_debug_form;
323
324     if (ofmt->stdmac)
325         pp_extra_stdmac(ofmt->stdmac);
326     parser_global_info(ofmt, &location);
327     eval_global_info(ofmt, lookup_label, &location);
328
329     /* define some macros dependent of command-line */
330     define_macros_late();
331
332     depend_ptr = (depend_file || (operating_mode == op_depend))
333         ? &depend_list : NULL;
334     if (!depend_target)
335         depend_target = outname;
336
337     switch (operating_mode) {
338     case op_depend:
339         {
340             char *line;
341
342             if (depend_missing_ok)
343                 pp_include_path(NULL);  /* "assume generated" */
344
345             preproc->reset(inname, 0, report_error, evaluate, &nasmlist,
346                            depend_ptr);
347             if (outname[0] == '\0')
348                 ofmt->filename(inname, outname, report_error);
349             ofile = NULL;
350             while ((line = preproc->getline()))
351                 nasm_free(line);
352             preproc->cleanup(0);
353         }
354         break;
355
356     case op_preprocess:
357         {
358             char *line;
359             char *file_name = NULL;
360             int32_t prior_linnum = 0;
361             int lineinc = 0;
362
363             if (*outname) {
364                 ofile = fopen(outname, "w");
365                 if (!ofile)
366                     report_error(ERR_FATAL | ERR_NOFILE,
367                                  "unable to open output file `%s'",
368                                  outname);
369             } else
370                 ofile = NULL;
371
372             location.known = false;
373
374             /* pass = 1; */
375             preproc->reset(inname, 3, report_error, evaluate, &nasmlist,
376                            depend_ptr);
377
378             while ((line = preproc->getline())) {
379                 /*
380                  * We generate %line directives if needed for later programs
381                  */
382                 int32_t linnum = prior_linnum += lineinc;
383                 int altline = src_get(&linnum, &file_name);
384                 if (altline) {
385                     if (altline == 1 && lineinc == 1)
386                         nasm_fputs("", ofile);
387                     else {
388                         lineinc = (altline != -1 || lineinc != 1);
389                         fprintf(ofile ? ofile : stdout,
390                                 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
391                                 file_name);
392                     }
393                     prior_linnum = linnum;
394                 }
395                 nasm_fputs(line, ofile);
396                 nasm_free(line);
397             }
398             nasm_free(file_name);
399             preproc->cleanup(0);
400             if (ofile)
401                 fclose(ofile);
402             if (ofile && terminate_after_phase)
403                 remove(outname);
404         }
405         break;
406
407     case op_normal:
408         {
409             /*
410              * We must call ofmt->filename _anyway_, even if the user
411              * has specified their own output file, because some
412              * formats (eg OBJ and COFF) use ofmt->filename to find out
413              * the name of the input file and then put that inside the
414              * file.
415              */
416             ofmt->filename(inname, outname, report_error);
417
418             ofile = fopen(outname, "wb");
419             if (!ofile) {
420                 report_error(ERR_FATAL | ERR_NOFILE,
421                              "unable to open output file `%s'", outname);
422             }
423
424             /*
425              * We must call init_labels() before ofmt->init() since
426              * some object formats will want to define labels in their
427              * init routines. (eg OS/2 defines the FLAT group)
428              */
429             init_labels();
430
431             ofmt->init(ofile, report_error, define_label, evaluate);
432
433             assemble_file(inname, depend_ptr);
434
435             if (!terminate_after_phase) {
436                 ofmt->cleanup(using_debug_info);
437                 cleanup_labels();
438             } else {
439                 /*
440                  * Despite earlier comments, we need this fclose.
441                  * The object output drivers only fclose on cleanup,
442                  * and we just skipped that.
443                  */
444                 fclose (ofile);
445
446                 remove(outname);
447                 if (listname[0])
448                     remove(listname);
449             }
450         }
451         break;
452     }
453
454     if (depend_list && !terminate_after_phase)
455         emit_dependencies(depend_list);
456
457     if (want_usage)
458         usage();
459
460     raa_free(offsets);
461     saa_free(forwrefs);
462     eval_cleanup();
463     stdscan_cleanup();
464
465     return terminate_after_phase;
466 }
467
468 /*
469  * Get a parameter for a command line option.
470  * First arg must be in the form of e.g. -f...
471  */
472 static char *get_param(char *p, char *q, bool *advance)
473 {
474     *advance = false;
475     if (p[2]) {                 /* the parameter's in the option */
476         p += 2;
477         while (nasm_isspace(*p))
478             p++;
479         return p;
480     }
481     if (q && q[0]) {
482         *advance = true;
483         return q;
484     }
485     report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
486                  "option `-%c' requires an argument", p[1]);
487     return NULL;
488 }
489
490 /*
491  * Copy a filename
492  */
493 static void copy_filename(char *dst, const char *src)
494 {
495     size_t len = strlen(src);
496
497     if (len >= (size_t)FILENAME_MAX) {
498         report_error(ERR_FATAL | ERR_NOFILE, "file name too long");
499         return;
500     }
501     strncpy(dst, src, FILENAME_MAX);
502 }
503
504 /*
505  * Convert a string to Make-safe form
506  */
507 static char *quote_for_make(const char *str)
508 {
509     const char *p;
510     char *os, *q;
511
512     size_t n = 1;               /* Terminating zero */
513     size_t nbs = 0;
514
515     if (!str)
516         return NULL;
517
518     for (p = str; *p; p++) {
519         switch (*p) {
520         case ' ':
521         case '\t':
522             /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
523             n += nbs + 2;
524             nbs = 0;
525             break;
526         case '$':
527         case '#':
528             nbs = 0;
529             n += 2;
530             break;
531         case '\\':
532             nbs++;
533             n++;
534             break;
535         default:
536             nbs = 0;
537             n++;
538         break;
539         }
540     }
541
542     /* Convert N backslashes at the end of filename to 2N backslashes */
543     if (nbs)
544         n += nbs;
545
546     os = q = nasm_malloc(n);
547
548     nbs = 0;
549     for (p = str; *p; p++) {
550         switch (*p) {
551         case ' ':
552         case '\t':
553             while (nbs--)
554                 *q++ = '\\';
555             *q++ = '\\';
556             *q++ = *p;
557             break;
558         case '$':
559             *q++ = *p;
560             *q++ = *p;
561             nbs = 0;
562             break;
563         case '#':
564             *q++ = '\\';
565             *q++ = *p;
566             nbs = 0;
567             break;
568         case '\\':
569             *q++ = *p;
570             nbs++;
571             break;
572         default:
573             *q++ = *p;
574             nbs = 0;
575         break;
576         }
577     }
578     while (nbs--)
579         *q++ = '\\';
580
581     *q = '\0';
582
583     return os;
584 }
585
586 struct textargs {
587     const char *label;
588     int value;
589 };
590
591 #define OPT_PREFIX 0
592 #define OPT_POSTFIX 1
593 struct textargs textopts[] = {
594     {"prefix", OPT_PREFIX},
595     {"postfix", OPT_POSTFIX},
596     {NULL, 0}
597 };
598
599 static bool stopoptions = false;
600 static bool process_arg(char *p, char *q)
601 {
602     char *param;
603     int i;
604     bool advance = false;
605     bool do_warn;
606
607     if (!p || !p[0])
608         return false;
609
610     if (p[0] == '-' && !stopoptions) {
611         if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
612             /* These parameters take values */
613             if (!(param = get_param(p, q, &advance)))
614                 return advance;
615         }
616
617         switch (p[1]) {
618         case 's':
619             error_file = stdout;
620             break;
621
622         case 'o':               /* output file */
623             copy_filename(outname, param);
624             break;
625
626         case 'f':               /* output format */
627             ofmt = ofmt_find(param);
628             if (!ofmt) {
629                 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
630                              "unrecognised output format `%s' - "
631                              "use -hf for a list", param);
632             }
633             break;
634
635         case 'O':               /* Optimization level */
636         {
637             int opt;
638
639             if (!*param) {
640                 /* Naked -O == -Ox */
641                 optimizing = INT_MAX >> 1; /* Almost unlimited */
642             } else {
643                 while (*param) {
644                     switch (*param) {
645                     case '0': case '1': case '2': case '3': case '4':
646                     case '5': case '6': case '7': case '8': case '9':
647                         opt = strtoul(param, &param, 10);
648
649                         /* -O0 -> optimizing == -1, 0.98 behaviour */
650                         /* -O1 -> optimizing == 0, 0.98.09 behaviour */
651                         if (opt < 2)
652                             optimizing = opt - 1;
653                         else
654                             optimizing = opt;
655                         break;
656
657                     case 'v':
658                     case '+':
659                         param++;
660                         opt_verbose_info = true;
661                         break;
662
663                     case 'x':
664                         param++;
665                         optimizing = INT_MAX >> 1; /* Almost unlimited */
666                         break;
667
668                     default:
669                         report_error(ERR_FATAL,
670                                      "unknown optimization option -O%c\n",
671                                      *param);
672                         break;
673                     }
674                 }
675             }
676             break;
677         }
678
679         case 'p':                       /* pre-include */
680         case 'P':
681             pp_pre_include(param);
682             break;
683
684         case 'd':                       /* pre-define */
685         case 'D':
686             pp_pre_define(param);
687             break;
688
689         case 'u':                       /* un-define */
690         case 'U':
691             pp_pre_undefine(param);
692             break;
693
694         case 'i':                       /* include search path */
695         case 'I':
696             pp_include_path(param);
697             break;
698
699         case 'l':                       /* listing file */
700             copy_filename(listname, param);
701             break;
702
703         case 'Z':                       /* error messages file */
704             strcpy(errname, param);
705             break;
706
707         case 'F':                       /* specify debug format */
708             ofmt->current_dfmt = dfmt_find(ofmt, param);
709             if (!ofmt->current_dfmt) {
710                 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
711                              "unrecognized debug format `%s' for"
712                              " output format `%s'",
713                              param, ofmt->shortname);
714             }
715             using_debug_info = true;
716             break;
717
718         case 'X':               /* specify error reporting format */
719             if (nasm_stricmp("vc", param) == 0)
720                 report_error = report_error_vc;
721             else if (nasm_stricmp("gnu", param) == 0)
722                 report_error = report_error_gnu;
723             else
724                 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
725                              "unrecognized error reporting format `%s'",
726                              param);
727             break;
728
729         case 'g':
730             using_debug_info = true;
731             break;
732
733         case 'h':
734             printf
735                 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
736                  "[-l listfile]\n"
737                  "            [options...] [--] filename\n"
738                  "    or nasm -v   for version info\n\n"
739                  "    -t          assemble in SciTech TASM compatible mode\n"
740                  "    -g          generate debug information in selected format.\n");
741             printf
742                 ("    -E (or -e)  preprocess only (writes output to stdout by default)\n"
743                  "    -a          don't preprocess (assemble only)\n"
744                  "    -M          generate Makefile dependencies on stdout\n"
745                  "    -MG         d:o, missing files assumed generated\n\n"
746                  "    -Z<file>    redirect error messages to file\n"
747                  "    -s          redirect error messages to stdout\n\n"
748                  "    -F format   select a debugging format\n\n"
749                  "    -I<path>    adds a pathname to the include file path\n");
750             printf
751                 ("    -O<digit>   optimize branch offsets (-O0 disables, default)\n"
752                  "    -P<file>    pre-includes a file\n"
753                  "    -D<macro>[=<value>] pre-defines a macro\n"
754                  "    -U<macro>   undefines a macro\n"
755                  "    -X<format>  specifies error reporting format (gnu or vc)\n"
756                  "    -w+foo      enables warning foo (equiv. -Wfoo)\n"
757                  "    -w-foo      disable warning foo (equiv. -Wno-foo)\n"
758                  "Warnings:\n");
759             for (i = 0; i <= ERR_WARN_MAX; i++)
760                 printf("    %-23s %s (default %s)\n",
761                        warnings[i].name, warnings[i].help,
762                        warnings[i].enabled ? "on" : "off");
763             printf
764                 ("\nresponse files should contain command line parameters"
765                  ", one per line.\n");
766             if (p[2] == 'f') {
767                 printf("\nvalid output formats for -f are"
768                        " (`*' denotes default):\n");
769                 ofmt_list(ofmt, stdout);
770             } else {
771                 printf("\nFor a list of valid output formats, use -hf.\n");
772                 printf("For a list of debug formats, use -f <form> -y.\n");
773             }
774             exit(0);            /* never need usage message here */
775             break;
776
777         case 'y':
778             printf("\nvalid debug formats for '%s' output format are"
779                    " ('*' denotes default):\n", ofmt->shortname);
780             dfmt_list(ofmt, stdout);
781             exit(0);
782             break;
783
784         case 't':
785             tasm_compatible_mode = true;
786             break;
787
788         case 'v':
789             printf("NASM version %s compiled on %s%s\n",
790                    nasm_version, nasm_date, nasm_compile_options);
791             exit(0);        /* never need usage message here */
792             break;
793
794         case 'e':              /* preprocess only */
795         case 'E':
796             operating_mode = op_preprocess;
797             break;
798
799         case 'a':              /* assemble only - don't preprocess */
800             preproc = &no_pp;
801             break;
802
803         case 'W':
804             if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
805                 do_warn = false;
806                 param += 3;
807             } else {
808                 do_warn = true;
809             }
810             goto set_warning;
811
812         case 'w':
813             if (param[0] != '+' && param[0] != '-') {
814                 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
815                              "invalid option to `-w'");
816                 break;
817             }
818             do_warn = (param[0] == '+');
819             param++;
820             goto set_warning;
821         set_warning:
822             for (i = 0; i <= ERR_WARN_MAX; i++)
823                 if (!nasm_stricmp(param, warnings[i].name))
824                     break;
825             if (i <= ERR_WARN_MAX)
826                 warning_on_global[i] = do_warn;
827             else if (!nasm_stricmp(param, "all"))
828                 for (i = 1; i <= ERR_WARN_MAX; i++)
829                     warning_on_global[i] = do_warn;
830             else if (!nasm_stricmp(param, "none"))
831                 for (i = 1; i <= ERR_WARN_MAX; i++)
832                     warning_on_global[i] = !do_warn;
833             else
834                 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
835                              "invalid warning `%s'", param);
836             break;
837
838         case 'M':
839             switch (p[2]) {
840             case 0:
841                 operating_mode = op_depend;
842                 break;
843             case 'G':
844                 operating_mode = op_depend;
845                 depend_missing_ok = true;
846                 break;
847             case 'P':
848                 depend_emit_phony = true;
849                 break;
850             case 'D':
851                 depend_file = q;
852                 advance = true;
853                 break;
854             case 'T':
855                 depend_target = q;
856                 advance = true;
857                 break;
858             case 'Q':
859                 depend_target = quote_for_make(q);
860                 advance = true;
861                 break;
862             default:
863                 report_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
864                              "unknown dependency option `-M%c'", p[2]);
865                 break;
866             }
867             if (advance && (!q || !q[0])) {
868                 report_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
869                              "option `-M%c' requires a parameter", p[2]);
870                 break;
871             }
872             break;
873
874         case '-':
875             {
876                 int s;
877
878                 if (p[2] == 0) {        /* -- => stop processing options */
879                     stopoptions = 1;
880                     break;
881                 }
882                 for (s = 0; textopts[s].label; s++) {
883                     if (!nasm_stricmp(p + 2, textopts[s].label)) {
884                         break;
885                     }
886                 }
887
888                 switch (s) {
889
890                 case OPT_PREFIX:
891                 case OPT_POSTFIX:
892                     {
893                         if (!q) {
894                             report_error(ERR_NONFATAL | ERR_NOFILE |
895                                          ERR_USAGE,
896                                          "option `--%s' requires an argument",
897                                          p + 2);
898                             break;
899                         } else {
900                             advance = 1, param = q;
901                         }
902
903                         if (s == OPT_PREFIX) {
904                             strncpy(lprefix, param, PREFIX_MAX - 1);
905                             lprefix[PREFIX_MAX - 1] = 0;
906                             break;
907                         }
908                         if (s == OPT_POSTFIX) {
909                             strncpy(lpostfix, param, POSTFIX_MAX - 1);
910                             lpostfix[POSTFIX_MAX - 1] = 0;
911                             break;
912                         }
913                         break;
914                     }
915                 default:
916                     {
917                         report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
918                                      "unrecognised option `--%s'", p + 2);
919                         break;
920                     }
921                 }
922                 break;
923             }
924
925         default:
926             if (!ofmt->setinfo(GI_SWITCH, &p))
927                 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
928                              "unrecognised option `-%c'", p[1]);
929             break;
930         }
931     } else {
932         if (*inname) {
933             report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
934                          "more than one input file specified");
935         } else {
936             copy_filename(inname, p);
937         }
938     }
939
940     return advance;
941 }
942
943 #define ARG_BUF_DELTA 128
944
945 static void process_respfile(FILE * rfile)
946 {
947     char *buffer, *p, *q, *prevarg;
948     int bufsize, prevargsize;
949
950     bufsize = prevargsize = ARG_BUF_DELTA;
951     buffer = nasm_malloc(ARG_BUF_DELTA);
952     prevarg = nasm_malloc(ARG_BUF_DELTA);
953     prevarg[0] = '\0';
954
955     while (1) {                 /* Loop to handle all lines in file */
956         p = buffer;
957         while (1) {             /* Loop to handle long lines */
958             q = fgets(p, bufsize - (p - buffer), rfile);
959             if (!q)
960                 break;
961             p += strlen(p);
962             if (p > buffer && p[-1] == '\n')
963                 break;
964             if (p - buffer > bufsize - 10) {
965                 int offset;
966                 offset = p - buffer;
967                 bufsize += ARG_BUF_DELTA;
968                 buffer = nasm_realloc(buffer, bufsize);
969                 p = buffer + offset;
970             }
971         }
972
973         if (!q && p == buffer) {
974             if (prevarg[0])
975                 process_arg(prevarg, NULL);
976             nasm_free(buffer);
977             nasm_free(prevarg);
978             return;
979         }
980
981         /*
982          * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
983          * them are present at the end of the line.
984          */
985         *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
986
987         while (p > buffer && nasm_isspace(p[-1]))
988             *--p = '\0';
989
990         p = buffer;
991         while (nasm_isspace(*p))
992             p++;
993
994         if (process_arg(prevarg, p))
995             *p = '\0';
996
997         if ((int) strlen(p) > prevargsize - 10) {
998             prevargsize += ARG_BUF_DELTA;
999             prevarg = nasm_realloc(prevarg, prevargsize);
1000         }
1001         strncpy(prevarg, p, prevargsize);
1002     }
1003 }
1004
1005 /* Function to process args from a string of args, rather than the
1006  * argv array. Used by the environment variable and response file
1007  * processing.
1008  */
1009 static void process_args(char *args)
1010 {
1011     char *p, *q, *arg, *prevarg;
1012     char separator = ' ';
1013
1014     p = args;
1015     if (*p && *p != '-')
1016         separator = *p++;
1017     arg = NULL;
1018     while (*p) {
1019         q = p;
1020         while (*p && *p != separator)
1021             p++;
1022         while (*p == separator)
1023             *p++ = '\0';
1024         prevarg = arg;
1025         arg = q;
1026         if (process_arg(prevarg, arg))
1027             arg = NULL;
1028     }
1029     if (arg)
1030         process_arg(arg, NULL);
1031 }
1032
1033 static void process_response_file(const char *file)
1034 {
1035     char str[2048];
1036     FILE *f = fopen(file, "r");
1037     if (!f) {
1038         perror(file);
1039         exit(-1);
1040     }
1041     while (fgets(str, sizeof str, f)) {
1042         process_args(str);
1043     }
1044     fclose(f);
1045 }
1046
1047 static void parse_cmdline(int argc, char **argv)
1048 {
1049     FILE *rfile;
1050     char *envreal, *envcopy = NULL, *p, *arg;
1051     int i;
1052
1053     *inname = *outname = *listname = *errname = '\0';
1054     for (i = 0; i <= ERR_WARN_MAX; i++)
1055         warning_on_global[i] = warnings[i].enabled;
1056
1057     /*
1058      * First, process the NASMENV environment variable.
1059      */
1060     envreal = getenv("NASMENV");
1061     arg = NULL;
1062     if (envreal) {
1063         envcopy = nasm_strdup(envreal);
1064         process_args(envcopy);
1065         nasm_free(envcopy);
1066     }
1067
1068     /*
1069      * Now process the actual command line.
1070      */
1071     while (--argc) {
1072         bool advance;
1073         argv++;
1074         if (argv[0][0] == '@') {
1075             /* We have a response file, so process this as a set of
1076              * arguments like the environment variable. This allows us
1077              * to have multiple arguments on a single line, which is
1078              * different to the -@resp file processing below for regular
1079              * NASM.
1080              */
1081             process_response_file(argv[0]+1);
1082             argc--;
1083             argv++;
1084         }
1085         if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1086             p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1087             if (p) {
1088                 rfile = fopen(p, "r");
1089                 if (rfile) {
1090                     process_respfile(rfile);
1091                     fclose(rfile);
1092                 } else
1093                     report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1094                                  "unable to open response file `%s'", p);
1095             }
1096         } else
1097             advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1098         argv += advance, argc -= advance;
1099     }
1100
1101     /* Look for basic command line typos.  This definitely doesn't
1102        catch all errors, but it might help cases of fumbled fingers. */
1103     if (!*inname)
1104         report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1105                      "no input file specified");
1106     else if (!strcmp(inname, errname) ||
1107              !strcmp(inname, outname) ||
1108              !strcmp(inname, listname) ||
1109              (depend_file && !strcmp(inname, depend_file)))
1110         report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1111                      "file `%s' is both input and output file",
1112                      inname);
1113
1114     if (*errname) {
1115         error_file = fopen(errname, "w");
1116         if (!error_file) {
1117             error_file = stderr;        /* Revert to default! */
1118             report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1119                          "cannot open file `%s' for error messages",
1120                          errname);
1121         }
1122     }
1123 }
1124
1125 /* List of directives */
1126 enum directives {
1127     D_NONE, D_ABSOLUTE, D_BITS, D_COMMON, D_CPU, D_DEBUG, D_DEFAULT,
1128     D_EXTERN, D_FLOAT, D_GLOBAL, D_LIST, D_SECTION, D_SEGMENT, D_WARNING
1129 };
1130 static const char *directives[] = {
1131     "", "absolute", "bits", "common", "cpu", "debug", "default",
1132     "extern", "float", "global", "list", "section", "segment", "warning"
1133 };
1134 static enum directives getkw(char **directive, char **value);
1135
1136 static void assemble_file(char *fname, StrList **depend_ptr)
1137 {
1138     char *directive, *value, *p, *q, *special, *line, debugid[80];
1139     insn output_ins;
1140     int i, validid;
1141     bool rn_error;
1142     int32_t seg;
1143     int64_t offs;
1144     struct tokenval tokval;
1145     expr *e;
1146     int pass_max;
1147
1148     if (cmd_sb == 32 && cmd_cpu < IF_386)
1149         report_error(ERR_FATAL, "command line: "
1150                      "32-bit segment size requires a higher cpu");
1151
1152     pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1153     for (passn = 1; pass0 <= 2; passn++) {
1154         int pass1, pass2;
1155         ldfunc def_label;
1156
1157         pass1 = pass0 == 2 ? 2 : 1;     /* 1, 1, 1, ..., 1, 2 */
1158         pass2 = passn > 1  ? 2 : 1;     /* 1, 2, 2, ..., 2, 2 */
1159         /* pass0                           0, 0, 0, ..., 1, 2 */
1160
1161         def_label = passn > 1 ? redefine_label : define_label;
1162
1163         globalbits = sb = cmd_sb;   /* set 'bits' to command line default */
1164         cpu = cmd_cpu;
1165         if (pass0 == 2) {
1166             if (*listname)
1167                 nasmlist.init(listname, report_error);
1168         }
1169         in_abs_seg = false;
1170         global_offset_changed = 0;  /* set by redefine_label */
1171         location.segment = ofmt->section(NULL, pass2, &sb);
1172         globalbits = sb;
1173         if (passn > 1) {
1174             saa_rewind(forwrefs);
1175             forwref = saa_rstruct(forwrefs);
1176             raa_free(offsets);
1177             offsets = raa_init();
1178         }
1179         preproc->reset(fname, pass1, report_error, evaluate, &nasmlist,
1180                        pass1 == 2 ? depend_ptr : NULL);
1181         memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1182
1183         globallineno = 0;
1184         if (passn == 1)
1185             location.known = true;
1186         location.offset = offs = GET_CURR_OFFS;
1187
1188         while ((line = preproc->getline())) {
1189             enum directives d;
1190             globallineno++;
1191
1192             /* here we parse our directives; this is not handled by the 'real'
1193              * parser. */
1194             directive = line;
1195             d = getkw(&directive, &value);
1196             if (d) {
1197                 int err = 0;
1198
1199                 switch (d) {
1200                 case D_SEGMENT:         /* [SEGMENT n] */
1201                 case D_SECTION:
1202                     seg = ofmt->section(value, pass2, &sb);
1203                     if (seg == NO_SEG) {
1204                         report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1205                                      "segment name `%s' not recognized",
1206                                      value);
1207                     } else {
1208                         in_abs_seg = false;
1209                         location.segment = seg;
1210                     }
1211                     break;
1212                 case D_EXTERN:          /* [EXTERN label:special] */
1213                     if (*value == '$')
1214                         value++;        /* skip initial $ if present */
1215                     if (pass0 == 2) {
1216                         q = value;
1217                         while (*q && *q != ':')
1218                             q++;
1219                         if (*q == ':') {
1220                             *q++ = '\0';
1221                             ofmt->symdef(value, 0L, 0L, 3, q);
1222                         }
1223                     } else if (passn == 1) {
1224                         q = value;
1225                         validid = true;
1226                         if (!isidstart(*q))
1227                             validid = false;
1228                         while (*q && *q != ':') {
1229                             if (!isidchar(*q))
1230                                 validid = false;
1231                             q++;
1232                         }
1233                         if (!validid) {
1234                             report_error(ERR_NONFATAL,
1235                                          "identifier expected after EXTERN");
1236                             break;
1237                         }
1238                         if (*q == ':') {
1239                             *q++ = '\0';
1240                             special = q;
1241                         } else
1242                             special = NULL;
1243                         if (!is_extern(value)) {        /* allow re-EXTERN to be ignored */
1244                             int temp = pass0;
1245                             pass0 = 1;  /* fake pass 1 in labels.c */
1246                             declare_as_global(value, special,
1247                                               report_error);
1248                             define_label(value, seg_alloc(), 0L, NULL,
1249                                          false, true, ofmt, report_error);
1250                             pass0 = temp;
1251                         }
1252                     }           /* else  pass0 == 1 */
1253                     break;
1254                 case D_BITS:            /* [BITS bits] */
1255                     globalbits = sb = get_bits(value);
1256                     break;
1257                 case D_GLOBAL:          /* [GLOBAL symbol:special] */
1258                     if (*value == '$')
1259                         value++;        /* skip initial $ if present */
1260                     if (pass0 == 2) {   /* pass 2 */
1261                         q = value;
1262                         while (*q && *q != ':')
1263                             q++;
1264                         if (*q == ':') {
1265                             *q++ = '\0';
1266                             ofmt->symdef(value, 0L, 0L, 3, q);
1267                         }
1268                     } else if (pass2 == 1) {    /* pass == 1 */
1269                         q = value;
1270                         validid = true;
1271                         if (!isidstart(*q))
1272                             validid = false;
1273                         while (*q && *q != ':') {
1274                             if (!isidchar(*q))
1275                                 validid = false;
1276                             q++;
1277                         }
1278                         if (!validid) {
1279                             report_error(ERR_NONFATAL,
1280                                          "identifier expected after GLOBAL");
1281                             break;
1282                         }
1283                         if (*q == ':') {
1284                             *q++ = '\0';
1285                             special = q;
1286                         } else
1287                             special = NULL;
1288                         declare_as_global(value, special, report_error);
1289                     }           /* pass == 1 */
1290                     break;
1291                 case D_COMMON:          /* [COMMON symbol size:special] */
1292                     if (*value == '$')
1293                         value++;        /* skip initial $ if present */
1294                     if (pass0 == 1) {
1295                         p = value;
1296                         validid = true;
1297                         if (!isidstart(*p))
1298                             validid = false;
1299                         while (*p && !nasm_isspace(*p)) {
1300                             if (!isidchar(*p))
1301                                 validid = false;
1302                             p++;
1303                         }
1304                         if (!validid) {
1305                             report_error(ERR_NONFATAL,
1306                                          "identifier expected after COMMON");
1307                             break;
1308                         }
1309                         if (*p) {
1310                             int64_t size;
1311
1312                             while (*p && nasm_isspace(*p))
1313                                 *p++ = '\0';
1314                             q = p;
1315                             while (*q && *q != ':')
1316                                 q++;
1317                             if (*q == ':') {
1318                                 *q++ = '\0';
1319                                 special = q;
1320                             } else
1321                                 special = NULL;
1322                             size = readnum(p, &rn_error);
1323                             if (rn_error)
1324                                 report_error(ERR_NONFATAL,
1325                                              "invalid size specified"
1326                                              " in COMMON declaration");
1327                             else
1328                                 define_common(value, seg_alloc(), size,
1329                                               special, ofmt, report_error);
1330                         } else
1331                             report_error(ERR_NONFATAL,
1332                                          "no size specified in"
1333                                          " COMMON declaration");
1334                     } else if (pass0 == 2) {    /* pass == 2 */
1335                         q = value;
1336                         while (*q && *q != ':') {
1337                             if (nasm_isspace(*q))
1338                                 *q = '\0';
1339                             q++;
1340                         }
1341                         if (*q == ':') {
1342                             *q++ = '\0';
1343                             ofmt->symdef(value, 0L, 0L, 3, q);
1344                         }
1345                     }
1346                     break;
1347                 case D_ABSOLUTE:                /* [ABSOLUTE address] */
1348                     stdscan_reset();
1349                     stdscan_bufptr = value;
1350                     tokval.t_type = TOKEN_INVALID;
1351                     e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1352                                  report_error, NULL);
1353                     if (e) {
1354                         if (!is_reloc(e))
1355                             report_error(pass0 ==
1356                                          1 ? ERR_NONFATAL : ERR_PANIC,
1357                                          "cannot use non-relocatable expression as "
1358                                          "ABSOLUTE address");
1359                         else {
1360                             abs_seg = reloc_seg(e);
1361                             abs_offset = reloc_value(e);
1362                         }
1363                     } else if (passn == 1)
1364                         abs_offset = 0x100;     /* don't go near zero in case of / */
1365                     else
1366                         report_error(ERR_PANIC, "invalid ABSOLUTE address "
1367                                      "in pass two");
1368                     in_abs_seg = true;
1369                     location.segment = NO_SEG;
1370                     break;
1371                 case D_DEBUG:           /* [DEBUG] */
1372                     p = value;
1373                     q = debugid;
1374                     validid = true;
1375                     if (!isidstart(*p))
1376                         validid = false;
1377                     while (*p && !nasm_isspace(*p)) {
1378                         if (!isidchar(*p))
1379                             validid = false;
1380                         *q++ = *p++;
1381                     }
1382                     *q++ = 0;
1383                     if (!validid) {
1384                         report_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1385                                      "identifier expected after DEBUG");
1386                         break;
1387                     }
1388                     while (*p && nasm_isspace(*p))
1389                         p++;
1390                     if (pass0 == 2)
1391                         ofmt->current_dfmt->debug_directive(debugid, p);
1392                     break;
1393                 case D_WARNING:         /* [WARNING {+|-|*}warn-name] */
1394                     while (*value && nasm_isspace(*value))
1395                         value++;
1396
1397                     switch(*value) {
1398                     case '-': validid = 0; value++; break;
1399                     case '+': validid = 1; value++; break;
1400                     case '*': validid = 2; value++; break;
1401                     default:  validid = 1; break;
1402                     }
1403
1404                     for (i = 1; i <= ERR_WARN_MAX; i++)
1405                         if (!nasm_stricmp(value, warnings[i].name))
1406                             break;
1407                     if (i <= ERR_WARN_MAX) {
1408                         switch(validid) {
1409                         case 0:
1410                             warning_on[i] = false;
1411                             break;
1412                         case 1:
1413                             warning_on[i] = true;
1414                             break;
1415                         case 2:
1416                             warning_on[i] = warning_on_global[i];
1417                             break;
1418                         }
1419                     }
1420                     else
1421                         report_error(ERR_NONFATAL,
1422                                      "invalid warning id in WARNING directive");
1423                     break;
1424                 case D_CPU:             /* [CPU] */
1425                     cpu = get_cpu(value);
1426                     break;
1427                 case D_LIST:            /* [LIST {+|-}] */
1428                     while (*value && nasm_isspace(*value))
1429                         value++;
1430
1431                     if (*value == '+') {
1432                         user_nolist = 0;
1433                     } else {
1434                         if (*value == '-') {
1435                             user_nolist = 1;
1436                         } else {
1437                             err = 1;
1438                         }
1439                     }
1440                     break;
1441                 case D_DEFAULT:         /* [DEFAULT] */
1442                     stdscan_reset();
1443                     stdscan_bufptr = value;
1444                     tokval.t_type = TOKEN_INVALID;
1445                     if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1446                         switch ((int)tokval.t_integer) {
1447                         case S_REL:
1448                             globalrel = 1;
1449                             break;
1450                         case S_ABS:
1451                             globalrel = 0;
1452                             break;
1453                         default:
1454                             err = 1;
1455                             break;
1456                         }
1457                     } else {
1458                         err = 1;
1459                     }
1460                     break;
1461                 case D_FLOAT:
1462                     if (float_option(value)) {
1463                         report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1464                                      "unknown 'float' directive: %s",
1465                                      value);
1466                     }
1467                     break;
1468                 default:
1469                     if (!ofmt->directive(directive, value, pass2))
1470                         report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1471                                      "unrecognised directive [%s]",
1472                                      directive);
1473                 }
1474                 if (err) {
1475                     report_error(ERR_NONFATAL,
1476                                  "invalid parameter to [%s] directive",
1477                                  directive);
1478                 }
1479             } else {            /* it isn't a directive */
1480
1481                 parse_line(pass1, line, &output_ins,
1482                            report_error, evaluate, def_label);
1483
1484                 if (optimizing > 0) {
1485                     if (forwref != NULL && globallineno == forwref->lineno) {
1486                         output_ins.forw_ref = true;
1487                         do {
1488                             output_ins.oprs[forwref->operand].opflags |=
1489                                 OPFLAG_FORWARD;
1490                             forwref = saa_rstruct(forwrefs);
1491                         } while (forwref != NULL
1492                                  && forwref->lineno == globallineno);
1493                     } else
1494                         output_ins.forw_ref = false;
1495                     
1496                     if (output_ins.forw_ref) {
1497                         if (passn == 1) {
1498                             for (i = 0; i < output_ins.operands; i++) {
1499                                 if (output_ins.oprs[i].
1500                                     opflags & OPFLAG_FORWARD) {
1501                                     struct forwrefinfo *fwinf =
1502                                         (struct forwrefinfo *)
1503                                         saa_wstruct(forwrefs);
1504                                     fwinf->lineno = globallineno;
1505                                 fwinf->operand = i;
1506                                 }
1507                             }
1508                         }
1509                     }
1510                 }
1511
1512                 /*  forw_ref */
1513                 if (output_ins.opcode == I_EQU) {
1514                     if (pass1 == 1) {
1515                         /*
1516                          * Special `..' EQUs get processed in pass two,
1517                          * except `..@' macro-processor EQUs which are done
1518                          * in the normal place.
1519                          */
1520                         if (!output_ins.label)
1521                             report_error(ERR_NONFATAL,
1522                                          "EQU not preceded by label");
1523
1524                         else if (output_ins.label[0] != '.' ||
1525                                  output_ins.label[1] != '.' ||
1526                                  output_ins.label[2] == '@') {
1527                             if (output_ins.operands == 1 &&
1528                                 (output_ins.oprs[0].type & IMMEDIATE) &&
1529                                 output_ins.oprs[0].wrt == NO_SEG) {
1530                                 bool isext = !!(output_ins.oprs[0].opflags
1531                                                 & OPFLAG_EXTERN);
1532                                 def_label(output_ins.label,
1533                                           output_ins.oprs[0].segment,
1534                                           output_ins.oprs[0].offset, NULL,
1535                                           false, isext, ofmt,
1536                                           report_error);
1537                             } else if (output_ins.operands == 2
1538                                        && (output_ins.oprs[0].type & IMMEDIATE)
1539                                        && (output_ins.oprs[0].type & COLON)
1540                                        && output_ins.oprs[0].segment == NO_SEG
1541                                        && output_ins.oprs[0].wrt == NO_SEG
1542                                        && (output_ins.oprs[1].type & IMMEDIATE)
1543                                        && output_ins.oprs[1].segment == NO_SEG
1544                                        && output_ins.oprs[1].wrt == NO_SEG) {
1545                                 def_label(output_ins.label,
1546                                           output_ins.oprs[0].offset | SEG_ABS,
1547                                           output_ins.oprs[1].offset,
1548                                           NULL, false, false, ofmt,
1549                                           report_error);
1550                             } else
1551                                 report_error(ERR_NONFATAL,
1552                                              "bad syntax for EQU");
1553                         }
1554                     } else {
1555                         /*
1556                          * Special `..' EQUs get processed here, except
1557                          * `..@' macro processor EQUs which are done above.
1558                          */
1559                         if (output_ins.label[0] == '.' &&
1560                             output_ins.label[1] == '.' &&
1561                             output_ins.label[2] != '@') {
1562                             if (output_ins.operands == 1 &&
1563                                 (output_ins.oprs[0].type & IMMEDIATE)) {
1564                                 define_label(output_ins.label,
1565                                              output_ins.oprs[0].segment,
1566                                              output_ins.oprs[0].offset,
1567                                              NULL, false, false, ofmt,
1568                                              report_error);
1569                             } else if (output_ins.operands == 2
1570                                        && (output_ins.oprs[0].
1571                                            type & IMMEDIATE)
1572                                        && (output_ins.oprs[0].type & COLON)
1573                                        && output_ins.oprs[0].segment ==
1574                                        NO_SEG
1575                                        && (output_ins.oprs[1].
1576                                            type & IMMEDIATE)
1577                                        && output_ins.oprs[1].segment ==
1578                                        NO_SEG) {
1579                                 define_label(output_ins.label,
1580                                              output_ins.oprs[0].
1581                                              offset | SEG_ABS,
1582                                              output_ins.oprs[1].offset,
1583                                              NULL, false, false, ofmt,
1584                                              report_error);
1585                             } else
1586                                 report_error(ERR_NONFATAL,
1587                                              "bad syntax for EQU");
1588                         }
1589                     }
1590                 } else {        /* instruction isn't an EQU */
1591
1592                     if (pass1 == 1) {
1593
1594                         int64_t l = insn_size(location.segment, offs, sb, cpu,
1595                                            &output_ins, report_error);
1596
1597                         /* if (using_debug_info)  && output_ins.opcode != -1) */
1598                         if (using_debug_info)
1599                         {       /* fbk 03/25/01 */
1600                             /* this is done here so we can do debug type info */
1601                             int32_t typeinfo =
1602                                 TYS_ELEMENTS(output_ins.operands);
1603                             switch (output_ins.opcode) {
1604                             case I_RESB:
1605                                 typeinfo =
1606                                     TYS_ELEMENTS(output_ins.oprs[0].
1607                                                  offset) | TY_BYTE;
1608                                 break;
1609                             case I_RESW:
1610                                 typeinfo =
1611                                     TYS_ELEMENTS(output_ins.oprs[0].
1612                                                  offset) | TY_WORD;
1613                                 break;
1614                             case I_RESD:
1615                                 typeinfo =
1616                                     TYS_ELEMENTS(output_ins.oprs[0].
1617                                                  offset) | TY_DWORD;
1618                                 break;
1619                             case I_RESQ:
1620                                 typeinfo =
1621                                     TYS_ELEMENTS(output_ins.oprs[0].
1622                                                  offset) | TY_QWORD;
1623                                 break;
1624                             case I_REST:
1625                                 typeinfo =
1626                                     TYS_ELEMENTS(output_ins.oprs[0].
1627                                                  offset) | TY_TBYTE;
1628                                 break;
1629                             case I_RESO:
1630                                 typeinfo =
1631                                     TYS_ELEMENTS(output_ins.oprs[0].
1632                                                  offset) | TY_OWORD;
1633                                 break;
1634                             case I_RESY:
1635                                 typeinfo =
1636                                     TYS_ELEMENTS(output_ins.oprs[0].
1637                                                  offset) | TY_YWORD;
1638                                 break;
1639                             case I_DB:
1640                                 typeinfo |= TY_BYTE;
1641                                 break;
1642                             case I_DW:
1643                                 typeinfo |= TY_WORD;
1644                                 break;
1645                             case I_DD:
1646                                 if (output_ins.eops_float)
1647                                     typeinfo |= TY_FLOAT;
1648                                 else
1649                                     typeinfo |= TY_DWORD;
1650                                 break;
1651                             case I_DQ:
1652                                 typeinfo |= TY_QWORD;
1653                                 break;
1654                             case I_DT:
1655                                 typeinfo |= TY_TBYTE;
1656                                 break;
1657                             case I_DO:
1658                                 typeinfo |= TY_OWORD;
1659                                 break;
1660                             case I_DY:
1661                                 typeinfo |= TY_YWORD;
1662                                 break;
1663                             default:
1664                                 typeinfo = TY_LABEL;
1665
1666                             }
1667
1668                             ofmt->current_dfmt->debug_typevalue(typeinfo);
1669
1670                         }
1671                         if (l != -1) {
1672                             offs += l;
1673                             SET_CURR_OFFS(offs);
1674                         }
1675                         /*
1676                          * else l == -1 => invalid instruction, which will be
1677                          * flagged as an error on pass 2
1678                          */
1679
1680                     } else {
1681                         offs += assemble(location.segment, offs, sb, cpu,
1682                                          &output_ins, ofmt, report_error,
1683                                          &nasmlist);
1684                         SET_CURR_OFFS(offs);
1685
1686                     }
1687                 }               /* not an EQU */
1688                 cleanup_insn(&output_ins);
1689             }
1690             nasm_free(line);
1691             location.offset = offs = GET_CURR_OFFS;
1692         }                       /* end while (line = preproc->getline... */
1693         if (pass1 == 2 && global_offset_changed)
1694             report_error(ERR_NONFATAL,
1695                          "phase error detected at end of assembly.");
1696
1697         if (pass1 == 1)
1698             preproc->cleanup(1);
1699
1700         if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1701             pass0++;
1702         } else if (global_offset_changed &&
1703                  global_offset_changed < prev_offset_changed) {
1704             prev_offset_changed = global_offset_changed;
1705             stall_count = 0;
1706         } else {
1707             stall_count++;
1708         }
1709
1710         if (terminate_after_phase)
1711             break;
1712
1713         if ((stall_count > 997) || (passn >= pass_max)) {
1714             /* We get here if the labels don't converge
1715              * Example: FOO equ FOO + 1
1716              */
1717              report_error(ERR_NONFATAL,
1718                           "Can't find valid values for all labels "
1719                           "after %d passes, giving up.", passn);
1720              report_error(ERR_NONFATAL,
1721                           "Possible causes: recursive EQUs, macro abuse.");
1722              terminate_after_phase = true;
1723              break;
1724         }
1725     }
1726
1727     preproc->cleanup(0);
1728     nasmlist.cleanup();
1729     if (!terminate_after_phase && opt_verbose_info) {
1730         /*  -On and -Ov switches */
1731         fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1732     }
1733 }
1734
1735 static enum directives getkw(char **directive, char **value)
1736 {
1737     char *p, *q, *buf;
1738
1739     buf = *directive;
1740
1741     /*  allow leading spaces or tabs */
1742     while (*buf == ' ' || *buf == '\t')
1743         buf++;
1744
1745     if (*buf != '[')
1746         return 0;
1747
1748     p = buf;
1749
1750     while (*p && *p != ']')
1751         p++;
1752
1753     if (!*p)
1754         return 0;
1755
1756     q = p++;
1757
1758     while (*p && *p != ';') {
1759         if (!nasm_isspace(*p))
1760             return 0;
1761         p++;
1762     }
1763     q[1] = '\0';
1764
1765     *directive = p = buf + 1;
1766     while (*buf && *buf != ' ' && *buf != ']' && *buf != '\t')
1767         buf++;
1768     if (*buf == ']') {
1769         *buf = '\0';
1770         *value = buf;
1771     } else {
1772         *buf++ = '\0';
1773         while (nasm_isspace(*buf))
1774             buf++;              /* beppu - skip leading whitespace */
1775         *value = buf;
1776         while (*buf != ']')
1777             buf++;
1778         *buf++ = '\0';
1779     }
1780
1781     return bsii(*directive, directives, elements(directives));
1782 }
1783
1784 /**
1785  * gnu style error reporting
1786  * This function prints an error message to error_file in the
1787  * style used by GNU. An example would be:
1788  * file.asm:50: error: blah blah blah
1789  * where file.asm is the name of the file, 50 is the line number on
1790  * which the error occurs (or is detected) and "error:" is one of
1791  * the possible optional diagnostics -- it can be "error" or "warning"
1792  * or something else.  Finally the line terminates with the actual
1793  * error message.
1794  *
1795  * @param severity the severity of the warning or error
1796  * @param fmt the printf style format string
1797  */
1798 static void report_error_gnu(int severity, const char *fmt, ...)
1799 {
1800     va_list ap;
1801
1802     if (is_suppressed_warning(severity))
1803         return;
1804
1805     if (severity & ERR_NOFILE)
1806         fputs("nasm: ", error_file);
1807     else {
1808         char *currentfile = NULL;
1809         int32_t lineno = 0;
1810         src_get(&lineno, &currentfile);
1811         fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1812         nasm_free(currentfile);
1813     }
1814     va_start(ap, fmt);
1815     report_error_common(severity, fmt, ap);
1816     va_end(ap);
1817 }
1818
1819 /**
1820  * MS style error reporting
1821  * This function prints an error message to error_file in the
1822  * style used by Visual C and some other Microsoft tools. An example
1823  * would be:
1824  * file.asm(50) : error: blah blah blah
1825  * where file.asm is the name of the file, 50 is the line number on
1826  * which the error occurs (or is detected) and "error:" is one of
1827  * the possible optional diagnostics -- it can be "error" or "warning"
1828  * or something else.  Finally the line terminates with the actual
1829  * error message.
1830  *
1831  * @param severity the severity of the warning or error
1832  * @param fmt the printf style format string
1833  */
1834 static void report_error_vc(int severity, const char *fmt, ...)
1835 {
1836     va_list ap;
1837
1838     if (is_suppressed_warning(severity))
1839         return;
1840
1841     if (severity & ERR_NOFILE)
1842         fputs("nasm: ", error_file);
1843     else {
1844         char *currentfile = NULL;
1845         int32_t lineno = 0;
1846         src_get(&lineno, &currentfile);
1847         fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1848         nasm_free(currentfile);
1849     }
1850     va_start(ap, fmt);
1851     report_error_common(severity, fmt, ap);
1852     va_end(ap);
1853 }
1854
1855 /**
1856  * check for supressed warning
1857  * checks for suppressed warning or pass one only warning and we're
1858  * not in pass 1
1859  *
1860  * @param severity the severity of the warning or error
1861  * @return true if we should abort error/warning printing
1862  */
1863 static bool is_suppressed_warning(int severity)
1864 {
1865     /*
1866      * See if it's a suppressed warning.
1867      */
1868     return (severity & ERR_MASK) == ERR_WARNING &&
1869         (((severity & ERR_WARN_MASK) != 0 &&
1870           !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1871          /* See if it's a pass-one only warning and we're not in pass one. */
1872          ((severity & ERR_PASS1) && pass0 != 1) ||
1873          ((severity & ERR_PASS2) && pass0 != 2));
1874 }
1875
1876 /**
1877  * common error reporting
1878  * This is the common back end of the error reporting schemes currently
1879  * implemented.  It prints the nature of the warning and then the
1880  * specific error message to error_file and may or may not return.  It
1881  * doesn't return if the error severity is a "panic" or "debug" type.
1882  *
1883  * @param severity the severity of the warning or error
1884  * @param fmt the printf style format string
1885  */
1886 static void report_error_common(int severity, const char *fmt,
1887                                 va_list args)
1888 {
1889     switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1890     case ERR_WARNING:
1891         fputs("warning: ", error_file);
1892         break;
1893     case ERR_NONFATAL:
1894         fputs("error: ", error_file);
1895         break;
1896     case ERR_FATAL:
1897         fputs("fatal: ", error_file);
1898         break;
1899     case ERR_PANIC:
1900         fputs("panic: ", error_file);
1901         break;
1902     case ERR_DEBUG:
1903         fputs("debug: ", error_file);
1904         break;
1905     default:
1906         break;
1907     }
1908
1909     vfprintf(error_file, fmt, args);
1910     putc('\n', error_file);
1911
1912     if (severity & ERR_USAGE)
1913         want_usage = true;
1914
1915     switch (severity & ERR_MASK) {
1916     case ERR_DEBUG:
1917         /* no further action, by definition */
1918         break;
1919     case ERR_WARNING:
1920         if (warning_on[0])      /* Treat warnings as errors */
1921             terminate_after_phase = true;
1922         break;
1923     case ERR_NONFATAL:
1924         terminate_after_phase = true;
1925         break;
1926     case ERR_FATAL:
1927         if (ofile) {
1928             fclose(ofile);
1929             remove(outname);
1930         }
1931         if (want_usage)
1932             usage();
1933         exit(1);                /* instantly die */
1934         break;                  /* placate silly compilers */
1935     case ERR_PANIC:
1936         fflush(NULL);
1937         /*      abort();        *//* halt, catch fire, and dump core */
1938         exit(3);
1939         break;
1940     }
1941 }
1942
1943 static void usage(void)
1944 {
1945     fputs("type `nasm -h' for help\n", error_file);
1946 }
1947
1948 static void register_output_formats(void)
1949 {
1950     ofmt = ofmt_register(report_error);
1951 }
1952
1953 #define BUF_DELTA 512
1954
1955 static FILE *no_pp_fp;
1956 static efunc no_pp_err;
1957 static ListGen *no_pp_list;
1958 static int32_t no_pp_lineinc;
1959
1960 static void no_pp_reset(char *file, int pass, efunc error, evalfunc eval,
1961                         ListGen * listgen, StrList **deplist)
1962 {
1963     src_set_fname(nasm_strdup(file));
1964     src_set_linnum(0);
1965     no_pp_lineinc = 1;
1966     no_pp_err = error;
1967     no_pp_fp = fopen(file, "r");
1968     if (!no_pp_fp)
1969         no_pp_err(ERR_FATAL | ERR_NOFILE,
1970                   "unable to open input file `%s'", file);
1971     no_pp_list = listgen;
1972     (void)pass;                 /* placate compilers */
1973     (void)eval;                 /* placate compilers */
1974
1975     if (deplist) {
1976         StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
1977         sl->next = NULL;
1978         strcpy(sl->str, file);
1979         *deplist = sl;
1980     }
1981 }
1982
1983 static char *no_pp_getline(void)
1984 {
1985     char *buffer, *p, *q;
1986     int bufsize;
1987
1988     bufsize = BUF_DELTA;
1989     buffer = nasm_malloc(BUF_DELTA);
1990     src_set_linnum(src_get_linnum() + no_pp_lineinc);
1991
1992     while (1) {                 /* Loop to handle %line */
1993
1994         p = buffer;
1995         while (1) {             /* Loop to handle long lines */
1996             q = fgets(p, bufsize - (p - buffer), no_pp_fp);
1997             if (!q)
1998                 break;
1999             p += strlen(p);
2000             if (p > buffer && p[-1] == '\n')
2001                 break;
2002             if (p - buffer > bufsize - 10) {
2003                 int offset;
2004                 offset = p - buffer;
2005                 bufsize += BUF_DELTA;
2006                 buffer = nasm_realloc(buffer, bufsize);
2007                 p = buffer + offset;
2008             }
2009         }
2010
2011         if (!q && p == buffer) {
2012             nasm_free(buffer);
2013             return NULL;
2014         }
2015
2016         /*
2017          * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
2018          * them are present at the end of the line.
2019          */
2020         buffer[strcspn(buffer, "\r\n\032")] = '\0';
2021
2022         if (!nasm_strnicmp(buffer, "%line", 5)) {
2023             int32_t ln;
2024             int li;
2025             char *nm = nasm_malloc(strlen(buffer));
2026             if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
2027                 nasm_free(src_set_fname(nm));
2028                 src_set_linnum(ln);
2029                 no_pp_lineinc = li;
2030                 continue;
2031             }
2032             nasm_free(nm);
2033         }
2034         break;
2035     }
2036
2037     no_pp_list->line(LIST_READ, buffer);
2038
2039     return buffer;
2040 }
2041
2042 static void no_pp_cleanup(int pass)
2043 {
2044     (void)pass;                     /* placate GCC */
2045     fclose(no_pp_fp);
2046 }
2047
2048 static uint32_t get_cpu(char *value)
2049 {
2050     if (!strcmp(value, "8086"))
2051         return IF_8086;
2052     if (!strcmp(value, "186"))
2053         return IF_186;
2054     if (!strcmp(value, "286"))
2055         return IF_286;
2056     if (!strcmp(value, "386"))
2057         return IF_386;
2058     if (!strcmp(value, "486"))
2059         return IF_486;
2060     if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2061         return IF_PENT;
2062     if (!strcmp(value, "686") ||
2063         !nasm_stricmp(value, "ppro") ||
2064         !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2065         return IF_P6;
2066     if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2067         return IF_KATMAI;
2068     if (!nasm_stricmp(value, "p4") ||   /* is this right? -- jrc */
2069         !nasm_stricmp(value, "willamette"))
2070         return IF_WILLAMETTE;
2071     if (!nasm_stricmp(value, "prescott"))
2072         return IF_PRESCOTT;
2073     if (!nasm_stricmp(value, "x64") ||
2074         !nasm_stricmp(value, "x86-64"))
2075         return IF_X86_64;
2076     if (!nasm_stricmp(value, "ia64") ||
2077         !nasm_stricmp(value, "ia-64") ||
2078         !nasm_stricmp(value, "itanium") ||
2079         !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2080         return IF_IA64;
2081
2082     report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2083                  "unknown 'cpu' type");
2084
2085     return IF_PLEVEL;           /* the maximum level */
2086 }
2087
2088 static int get_bits(char *value)
2089 {
2090     int i;
2091
2092     if ((i = atoi(value)) == 16)
2093         return i;               /* set for a 16-bit segment */
2094     else if (i == 32) {
2095         if (cpu < IF_386) {
2096             report_error(ERR_NONFATAL,
2097                          "cannot specify 32-bit segment on processor below a 386");
2098             i = 16;
2099         }
2100     } else if (i == 64) {
2101         if (cpu < IF_X86_64) {
2102             report_error(ERR_NONFATAL,
2103                          "cannot specify 64-bit segment on processor below an x86-64");
2104             i = 16;
2105         }
2106         if (i != maxbits) {
2107             report_error(ERR_NONFATAL,
2108                          "%s output format does not support 64-bit code",
2109                          ofmt->shortname);
2110             i = 16;
2111         }
2112     } else {
2113         report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2114                      "`%s' is not a valid segment size; must be 16, 32 or 64",
2115                      value);
2116         i = 16;
2117     }
2118     return i;
2119 }
2120
2121 /* end of nasm.c */