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 int want_usage;
 154 static int 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)
 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     if (terminate_after_phase)
 466         return 1;
 467     else
 468         return 0;
 469 }
 470
 471 /*
 472  * Get a parameter for a command line option.
 473  * First arg must be in the form of e.g. -f...
 474  */
 475 static char *get_param(char *p, char *q, bool *advance)
 476 {
 477     *advance = false;
 478     if (p[2]) {                 /* the parameter's in the option */
 479         p += 2;
 480         while (nasm_isspace(*p))
 481             p++;
 482         return p;
 483     }
 484     if (q && q[0]) {
 485         *advance = true;
 486         return q;
 487     }
 488     report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 489                  "option `-%c' requires an argument", p[1]);
 490     return NULL;
 491 }
 492
 493 /*
 494  * Copy a filename
 495  */
 496 static void copy_filename(char *dst, const char *src)
 497 {
 498     size_t len = strlen(src);
 499
 500     if (len >= (size_t)FILENAME_MAX) {
 501         report_error(ERR_FATAL | ERR_NOFILE, "file name too long");
 502         return;
 503     }
 504     strncpy(dst, src, FILENAME_MAX);
 505 }
 506
 507 /*
 508  * Convert a string to Make-safe form
 509  */
 510 static char *quote_for_make(const char *str)
 511 {
 512     const char *p;
 513     char *os, *q;
 514
 515     size_t n = 1;               /* Terminating zero */
 516     size_t nbs = 0;
 517
 518     if (!str)
 519         return NULL;
 520
 521     for (p = str; *p; p++) {
 522         switch (*p) {
 523         case ' ':
 524         case '\t':
 525             /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
 526             n += nbs + 2;
 527             nbs = 0;
 528             break;
 529         case '$':
 530         case '#':
 531             nbs = 0;
 532             n += 2;
 533             break;
 534         case '\\':
 535             nbs++;
 536             n++;
 537             break;
 538         default:
 539             nbs = 0;
 540             n++;
 541         break;
 542         }
 543     }
 544
 545     /* Convert N backslashes at the end of filename to 2N backslashes */
 546     if (nbs)
 547         n += nbs;
 548
 549     os = q = nasm_malloc(n);
 550
 551     nbs = 0;
 552     for (p = str; *p; p++) {
 553         switch (*p) {
 554         case ' ':
 555         case '\t':
 556             while (nbs--)
 557                 *q++ = '\\';
 558             *q++ = '\\';
 559             *q++ = *p;
 560             break;
 561         case '$':
 562             *q++ = *p;
 563             *q++ = *p;
 564             nbs = 0;
 565             break;
 566         case '#':
 567             *q++ = '\\';
 568             *q++ = *p;
 569             nbs = 0;
 570             break;
 571         case '\\':
 572             *q++ = *p;
 573             nbs++;
 574             break;
 575         default:
 576             *q++ = *p;
 577             nbs = 0;
 578         break;
 579         }
 580     }
 581     while (nbs--)
 582         *q++ = '\\';
 583
 584     *q = '\0';
 585
 586     return os;
 587 }
 588
 589 struct textargs {
 590     const char *label;
 591     int value;
 592 };
 593
 594 #define OPT_PREFIX 0
 595 #define OPT_POSTFIX 1
 596 struct textargs textopts[] = {
 597     {"prefix", OPT_PREFIX},
 598     {"postfix", OPT_POSTFIX},
 599     {NULL, 0}
 600 };
 601
 602 static bool stopoptions = false;
 603 static bool process_arg(char *p, char *q)
 604 {
 605     char *param;
 606     int i;
 607     bool advance = false;
 608     bool do_warn;
 609
 610     if (!p || !p[0])
 611         return false;
 612
 613     if (p[0] == '-' && !stopoptions) {
 614         if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
 615             /* These parameters take values */
 616             if (!(param = get_param(p, q, &advance)))
 617                 return advance;
 618         }
 619
 620         switch (p[1]) {
 621         case 's':
 622             error_file = stdout;
 623             break;
 624
 625         case 'o':               /* output file */
 626             copy_filename(outname, param);
 627             break;
 628
 629         case 'f':               /* output format */
 630             ofmt = ofmt_find(param);
 631             if (!ofmt) {
 632                 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 633                              "unrecognised output format `%s' - "
 634                              "use -hf for a list", param);
 635             } else {
 636                 ofmt->current_dfmt = ofmt->debug_formats[0];
 637             }
 638             break;
 639
 640         case 'O':               /* Optimization level */
 641         {
 642             int opt;
 643
 644             if (!*param) {
 645                 /* Naked -O == -Ox */
 646                 optimizing = INT_MAX >> 1; /* Almost unlimited */
 647             } else {
 648                 while (*param) {
 649                     switch (*param) {
 650                     case '0': case '1': case '2': case '3': case '4':
 651                     case '5': case '6': case '7': case '8': case '9':
 652                         opt = strtoul(param, &param, 10);
 653
 654                         /* -O0 -> optimizing == -1, 0.98 behaviour */
 655                         /* -O1 -> optimizing == 0, 0.98.09 behaviour */
 656                         if (opt < 2)
 657                             optimizing = opt - 1;
 658                         else
 659                             optimizing = opt;
 660                         break;
 661
 662                     case 'v':
 663                     case '+':
 664                         param++;
 665                         opt_verbose_info = true;
 666                         break;
 667
 668                     case 'x':
 669                         param++;
 670                         optimizing = INT_MAX >> 1; /* Almost unlimited */
 671                         break;
 672
 673                     default:
 674                         report_error(ERR_FATAL,
 675                                      "unknown optimization option -O%c\n",
 676                                      *param);
 677                         break;
 678                     }
 679                 }
 680             }
 681             break;
 682         }
 683
 684         case 'p':                       /* pre-include */
 685         case 'P':
 686             pp_pre_include(param);
 687             break;
 688
 689         case 'd':                       /* pre-define */
 690         case 'D':
 691             pp_pre_define(param);
 692             break;
 693
 694         case 'u':                       /* un-define */
 695         case 'U':
 696             pp_pre_undefine(param);
 697             break;
 698
 699         case 'i':                       /* include search path */
 700         case 'I':
 701             pp_include_path(param);
 702             break;
 703
 704         case 'l':                       /* listing file */
 705             copy_filename(listname, param);
 706             break;
 707
 708         case 'Z':                       /* error messages file */
 709             strcpy(errname, param);
 710             break;
 711
 712         case 'F':                       /* specify debug format */
 713             ofmt->current_dfmt = dfmt_find(ofmt, param);
 714             if (!ofmt->current_dfmt) {
 715                 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 716                              "unrecognized debug format `%s' for"
 717                              " output format `%s'",
 718                              param, ofmt->shortname);
 719             }
 720             using_debug_info = true;
 721             break;
 722
 723         case 'X':               /* specify error reporting format */
 724             if (nasm_stricmp("vc", param) == 0)
 725                 report_error = report_error_vc;
 726             else if (nasm_stricmp("gnu", param) == 0)
 727                 report_error = report_error_gnu;
 728             else
 729                 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 730                              "unrecognized error reporting format `%s'",
 731                              param);
 732             break;
 733
 734         case 'g':
 735             using_debug_info = true;
 736             break;
 737
 738         case 'h':
 739             printf
 740                 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
 741                  "[-l listfile]\n"
 742                  "            [options...] [--] filename\n"
 743                  "    or nasm -v   for version info\n\n"
 744                  "    -t          assemble in SciTech TASM compatible mode\n"
 745                  "    -g          generate debug information in selected format.\n");
 746             printf
 747                 ("    -E (or -e)  preprocess only (writes output to stdout by default)\n"
 748                  "    -a          don't preprocess (assemble only)\n"
 749                  "    -M          generate Makefile dependencies on stdout\n"
 750                  "    -MG         d:o, missing files assumed generated\n\n"
 751                  "    -Z<file>    redirect error messages to file\n"
 752                  "    -s          redirect error messages to stdout\n\n"
 753                  "    -F format   select a debugging format\n\n"
 754                  "    -I<path>    adds a pathname to the include file path\n");
 755             printf
 756                 ("    -O<digit>   optimize branch offsets (-O0 disables, default)\n"
 757                  "    -P<file>    pre-includes a file\n"
 758                  "    -D<macro>[=<value>] pre-defines a macro\n"
 759                  "    -U<macro>   undefines a macro\n"
 760                  "    -X<format>  specifies error reporting format (gnu or vc)\n"
 761                  "    -w+foo      enables warning foo (equiv. -Wfoo)\n"
 762                  "    -w-foo      disable warning foo (equiv. -Wno-foo)\n"
 763                  "Warnings:\n");
 764             for (i = 0; i <= ERR_WARN_MAX; i++)
 765                 printf("    %-23s %s (default %s)\n",
 766                        warnings[i].name, warnings[i].help,
 767                        warnings[i].enabled ? "on" : "off");
 768             printf
 769                 ("\nresponse files should contain command line parameters"
 770                  ", one per line.\n");
 771             if (p[2] == 'f') {
 772                 printf("\nvalid output formats for -f are"
 773                        " (`*' denotes default):\n");
 774                 ofmt_list(ofmt, stdout);
 775             } else {
 776                 printf("\nFor a list of valid output formats, use -hf.\n");
 777                 printf("For a list of debug formats, use -f <form> -y.\n");
 778             }
 779             exit(0);            /* never need usage message here */
 780             break;
 781
 782         case 'y':
 783             printf("\nvalid debug formats for '%s' output format are"
 784                    " ('*' denotes default):\n", ofmt->shortname);
 785             dfmt_list(ofmt, stdout);
 786             exit(0);
 787             break;
 788
 789         case 't':
 790             tasm_compatible_mode = true;
 791             break;
 792
 793         case 'v':
 794             {
 795                 const char *nasm_version_string =
 796                     "NASM version " NASM_VER " compiled on " __DATE__
 797 #ifdef DEBUG
 798                     " with -DDEBUG"
 799 #endif
 800                     ;
 801                 puts(nasm_version_string);
 802                 exit(0);        /* never need usage message here */
 803             }
 804             break;
 805
 806         case 'e':              /* preprocess only */
 807         case 'E':
 808             operating_mode = op_preprocess;
 809             break;
 810
 811         case 'a':              /* assemble only - don't preprocess */
 812             preproc = &no_pp;
 813             break;
 814
 815         case 'W':
 816             if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
 817                 do_warn = false;
 818                 param += 3;
 819             } else {
 820                 do_warn = true;
 821             }
 822             goto set_warning;
 823
 824         case 'w':
 825             if (param[0] != '+' && param[0] != '-') {
 826                 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 827                              "invalid option to `-w'");
 828                 break;
 829             }
 830             do_warn = (param[0] == '+');
 831             param++;
 832             goto set_warning;
 833         set_warning:
 834             for (i = 0; i <= ERR_WARN_MAX; i++)
 835                 if (!nasm_stricmp(param, warnings[i].name))
 836                     break;
 837             if (i <= ERR_WARN_MAX)
 838                 warning_on_global[i] = do_warn;
 839             else if (!nasm_stricmp(param, "all"))
 840                 for (i = 1; i <= ERR_WARN_MAX; i++)
 841                     warning_on_global[i] = do_warn;
 842             else if (!nasm_stricmp(param, "none"))
 843                 for (i = 1; i <= ERR_WARN_MAX; i++)
 844                     warning_on_global[i] = !do_warn;
 845             else
 846                 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 847                              "invalid warning `%s'", param);
 848             break;
 849
 850         case 'M':
 851             switch (p[2]) {
 852             case 0:
 853                 operating_mode = op_depend;
 854                 break;
 855             case 'G':
 856                 operating_mode = op_depend;
 857                 depend_missing_ok = true;
 858                 break;
 859             case 'P':
 860                 depend_emit_phony = true;
 861                 break;
 862             case 'D':
 863                 depend_file = q;
 864                 advance = true;
 865                 break;
 866             case 'T':
 867                 depend_target = q;
 868                 advance = true;
 869                 break;
 870             case 'Q':
 871                 depend_target = quote_for_make(q);
 872                 advance = true;
 873                 break;
 874             default:
 875                 report_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
 876                              "unknown dependency option `-M%c'", p[2]);
 877                 break;
 878             }
 879             if (advance && (!q || !q[0])) {
 880                 report_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
 881                              "option `-M%c' requires a parameter", p[2]);
 882                 break;
 883             }
 884             break;
 885
 886         case '-':
 887             {
 888                 int s;
 889
 890                 if (p[2] == 0) {        /* -- => stop processing options */
 891                     stopoptions = 1;
 892                     break;
 893                 }
 894                 for (s = 0; textopts[s].label; s++) {
 895                     if (!nasm_stricmp(p + 2, textopts[s].label)) {
 896                         break;
 897                     }
 898                 }
 899
 900                 switch (s) {
 901
 902                 case OPT_PREFIX:
 903                 case OPT_POSTFIX:
 904                     {
 905                         if (!q) {
 906                             report_error(ERR_NONFATAL | ERR_NOFILE |
 907                                          ERR_USAGE,
 908                                          "option `--%s' requires an argument",
 909                                          p + 2);
 910                             break;
 911                         } else {
 912                             advance = 1, param = q;
 913                         }
 914
 915                         if (s == OPT_PREFIX) {
 916                             strncpy(lprefix, param, PREFIX_MAX - 1);
 917                             lprefix[PREFIX_MAX - 1] = 0;
 918                             break;
 919                         }
 920                         if (s == OPT_POSTFIX) {
 921                             strncpy(lpostfix, param, POSTFIX_MAX - 1);
 922                             lpostfix[POSTFIX_MAX - 1] = 0;
 923                             break;
 924                         }
 925                         break;
 926                     }
 927                 default:
 928                     {
 929                         report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 930                                      "unrecognised option `--%s'", p + 2);
 931                         break;
 932                     }
 933                 }
 934                 break;
 935             }
 936
 937         default:
 938             if (!ofmt->setinfo(GI_SWITCH, &p))
 939                 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 940                              "unrecognised option `-%c'", p[1]);
 941             break;
 942         }
 943     } else {
 944         if (*inname) {
 945             report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 946                          "more than one input file specified");
 947         } else {
 948             copy_filename(inname, p);
 949         }
 950     }
 951
 952     return advance;
 953 }
 954
 955 #define ARG_BUF_DELTA 128
 956
 957 static void process_respfile(FILE * rfile)
 958 {
 959     char *buffer, *p, *q, *prevarg;
 960     int bufsize, prevargsize;
 961
 962     bufsize = prevargsize = ARG_BUF_DELTA;
 963     buffer = nasm_malloc(ARG_BUF_DELTA);
 964     prevarg = nasm_malloc(ARG_BUF_DELTA);
 965     prevarg[0] = '\0';
 966
 967     while (1) {                 /* Loop to handle all lines in file */
 968         p = buffer;
 969         while (1) {             /* Loop to handle long lines */
 970             q = fgets(p, bufsize - (p - buffer), rfile);
 971             if (!q)
 972                 break;
 973             p += strlen(p);
 974             if (p > buffer && p[-1] == '\n')
 975                 break;
 976             if (p - buffer > bufsize - 10) {
 977                 int offset;
 978                 offset = p - buffer;
 979                 bufsize += ARG_BUF_DELTA;
 980                 buffer = nasm_realloc(buffer, bufsize);
 981                 p = buffer + offset;
 982             }
 983         }
 984
 985         if (!q && p == buffer) {
 986             if (prevarg[0])
 987                 process_arg(prevarg, NULL);
 988             nasm_free(buffer);
 989             nasm_free(prevarg);
 990             return;
 991         }
 992
 993         /*
 994          * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
 995          * them are present at the end of the line.
 996          */
 997         *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
 998
 999         while (p > buffer && nasm_isspace(p[-1]))
1000             *--p = '\0';
1001
1002         p = buffer;
1003         while (nasm_isspace(*p))
1004             p++;
1005
1006         if (process_arg(prevarg, p))
1007             *p = '\0';
1008
1009         if ((int) strlen(p) > prevargsize - 10) {
1010             prevargsize += ARG_BUF_DELTA;
1011             prevarg = nasm_realloc(prevarg, prevargsize);
1012         }
1013         strncpy(prevarg, p, prevargsize);
1014     }
1015 }
1016
1017 /* Function to process args from a string of args, rather than the
1018  * argv array. Used by the environment variable and response file
1019  * processing.
1020  */
1021 static void process_args(char *args)
1022 {
1023     char *p, *q, *arg, *prevarg;
1024     char separator = ' ';
1025
1026     p = args;
1027     if (*p && *p != '-')
1028         separator = *p++;
1029     arg = NULL;
1030     while (*p) {
1031         q = p;
1032         while (*p && *p != separator)
1033             p++;
1034         while (*p == separator)
1035             *p++ = '\0';
1036         prevarg = arg;
1037         arg = q;
1038         if (process_arg(prevarg, arg))
1039             arg = NULL;
1040     }
1041     if (arg)
1042         process_arg(arg, NULL);
1043 }
1044
1045 static void process_response_file(const char *file)
1046 {
1047     char str[2048];
1048     FILE *f = fopen(file, "r");
1049     if (!f) {
1050         perror(file);
1051         exit(-1);
1052     }
1053     while (fgets(str, sizeof str, f)) {
1054         process_args(str);
1055     }
1056     fclose(f);
1057 }
1058
1059 static void parse_cmdline(int argc, char **argv)
1060 {
1061     FILE *rfile;
1062     char *envreal, *envcopy = NULL, *p, *arg;
1063     int i;
1064
1065     *inname = *outname = *listname = *errname = '\0';
1066     for (i = 0; i <= ERR_WARN_MAX; i++)
1067         warning_on_global[i] = warnings[i].enabled;
1068
1069     /*
1070      * First, process the NASMENV environment variable.
1071      */
1072     envreal = getenv("NASMENV");
1073     arg = NULL;
1074     if (envreal) {
1075         envcopy = nasm_strdup(envreal);
1076         process_args(envcopy);
1077         nasm_free(envcopy);
1078     }
1079
1080     /*
1081      * Now process the actual command line.
1082      */
1083     while (--argc) {
1084         bool advance;
1085         argv++;
1086         if (argv[0][0] == '@') {
1087             /* We have a response file, so process this as a set of
1088              * arguments like the environment variable. This allows us
1089              * to have multiple arguments on a single line, which is
1090              * different to the -@resp file processing below for regular
1091              * NASM.
1092              */
1093             process_response_file(argv[0]+1);
1094             argc--;
1095             argv++;
1096         }
1097         if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1098             p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1099             if (p) {
1100                 rfile = fopen(p, "r");
1101                 if (rfile) {
1102                     process_respfile(rfile);
1103                     fclose(rfile);
1104                 } else
1105                     report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1106                                  "unable to open response file `%s'", p);
1107             }
1108         } else
1109             advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1110         argv += advance, argc -= advance;
1111     }
1112
1113     /* Look for basic command line typos.  This definitely doesn't
1114        catch all errors, but it might help cases of fumbled fingers. */
1115     if (!*inname)
1116         report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1117                      "no input file specified");
1118     else if (!strcmp(inname, errname) ||
1119              !strcmp(inname, outname) ||
1120              !strcmp(inname, listname) ||
1121              (depend_file && !strcmp(inname, depend_file)))
1122         report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1123                      "file `%s' is both input and output file",
1124                      inname);
1125
1126     if (*errname) {
1127         error_file = fopen(errname, "w");
1128         if (!error_file) {
1129             error_file = stderr;        /* Revert to default! */
1130             report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1131                          "cannot open file `%s' for error messages",
1132                          errname);
1133         }
1134     }
1135 }
1136
1137 /* List of directives */
1138 enum directives {
1139     D_NONE, D_ABSOLUTE, D_BITS, D_COMMON, D_CPU, D_DEBUG, D_DEFAULT,
1140     D_EXTERN, D_FLOAT, D_GLOBAL, D_LIST, D_SECTION, D_SEGMENT, D_WARNING
1141 };
1142 static const char *directives[] = {
1143     "", "absolute", "bits", "common", "cpu", "debug", "default",
1144     "extern", "float", "global", "list", "section", "segment", "warning"
1145 };
1146 static enum directives getkw(char **directive, char **value);
1147
1148 static void assemble_file(char *fname, StrList **depend_ptr)
1149 {
1150     char *directive, *value, *p, *q, *special, *line, debugid[80];
1151     insn output_ins;
1152     int i, validid;
1153     bool rn_error;
1154     int32_t seg;
1155     int64_t offs;
1156     struct tokenval tokval;
1157     expr *e;
1158     int pass_max;
1159
1160     if (cmd_sb == 32 && cmd_cpu < IF_386)
1161         report_error(ERR_FATAL, "command line: "
1162                      "32-bit segment size requires a higher cpu");
1163
1164     pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1165     for (passn = 1; pass0 <= 2; passn++) {
1166         int pass1, pass2;
1167         ldfunc def_label;
1168
1169         pass1 = pass0 == 2 ? 2 : 1;     /* 1, 1, 1, ..., 1, 2 */
1170         pass2 = passn > 1  ? 2 : 1;     /* 1, 2, 2, ..., 2, 2 */
1171         /* pass0                           0, 0, 0, ..., 1, 2 */
1172
1173         def_label = passn > 1 ? redefine_label : define_label;
1174
1175         globalbits = sb = cmd_sb;   /* set 'bits' to command line default */
1176         cpu = cmd_cpu;
1177         if (pass0 == 2) {
1178             if (*listname)
1179                 nasmlist.init(listname, report_error);
1180         }
1181         in_abs_seg = false;
1182         global_offset_changed = 0;  /* set by redefine_label */
1183         location.segment = ofmt->section(NULL, pass2, &sb);
1184         globalbits = sb;
1185         if (passn > 1) {
1186             saa_rewind(forwrefs);
1187             forwref = saa_rstruct(forwrefs);
1188             raa_free(offsets);
1189             offsets = raa_init();
1190         }
1191         preproc->reset(fname, pass1, report_error, evaluate, &nasmlist,
1192                        pass1 == 2 ? depend_ptr : NULL);
1193         memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1194
1195         globallineno = 0;
1196         if (passn == 1)
1197             location.known = true;
1198         location.offset = offs = GET_CURR_OFFS;
1199
1200         while ((line = preproc->getline())) {
1201             enum directives d;
1202             globallineno++;
1203
1204             /* here we parse our directives; this is not handled by the 'real'
1205              * parser. */
1206             directive = line;
1207             d = getkw(&directive, &value);
1208             if (d) {
1209                 int err = 0;
1210
1211                 switch (d) {
1212                 case D_SEGMENT:         /* [SEGMENT n] */
1213                 case D_SECTION:
1214                     seg = ofmt->section(value, pass2, &sb);
1215                     if (seg == NO_SEG) {
1216                         report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1217                                      "segment name `%s' not recognized",
1218                                      value);
1219                     } else {
1220                         in_abs_seg = false;
1221                         location.segment = seg;
1222                     }
1223                     break;
1224                 case D_EXTERN:          /* [EXTERN label:special] */
1225                     if (*value == '$')
1226                         value++;        /* skip initial $ if present */
1227                     if (pass0 == 2) {
1228                         q = value;
1229                         while (*q && *q != ':')
1230                             q++;
1231                         if (*q == ':') {
1232                             *q++ = '\0';
1233                             ofmt->symdef(value, 0L, 0L, 3, q);
1234                         }
1235                     } else if (passn == 1) {
1236                         q = value;
1237                         validid = true;
1238                         if (!isidstart(*q))
1239                             validid = false;
1240                         while (*q && *q != ':') {
1241                             if (!isidchar(*q))
1242                                 validid = false;
1243                             q++;
1244                         }
1245                         if (!validid) {
1246                             report_error(ERR_NONFATAL,
1247                                          "identifier expected after EXTERN");
1248                             break;
1249                         }
1250                         if (*q == ':') {
1251                             *q++ = '\0';
1252                             special = q;
1253                         } else
1254                             special = NULL;
1255                         if (!is_extern(value)) {        /* allow re-EXTERN to be ignored */
1256                             int temp = pass0;
1257                             pass0 = 1;  /* fake pass 1 in labels.c */
1258                             declare_as_global(value, special,
1259                                               report_error);
1260                             define_label(value, seg_alloc(), 0L, NULL,
1261                                          false, true, ofmt, report_error);
1262                             pass0 = temp;
1263                         }
1264                     }           /* else  pass0 == 1 */
1265                     break;
1266                 case D_BITS:            /* [BITS bits] */
1267                     globalbits = sb = get_bits(value);
1268                     break;
1269                 case D_GLOBAL:          /* [GLOBAL symbol:special] */
1270                     if (*value == '$')
1271                         value++;        /* skip initial $ if present */
1272                     if (pass0 == 2) {   /* pass 2 */
1273                         q = value;
1274                         while (*q && *q != ':')
1275                             q++;
1276                         if (*q == ':') {
1277                             *q++ = '\0';
1278                             ofmt->symdef(value, 0L, 0L, 3, q);
1279                         }
1280                     } else if (pass2 == 1) {    /* pass == 1 */
1281                         q = value;
1282                         validid = true;
1283                         if (!isidstart(*q))
1284                             validid = false;
1285                         while (*q && *q != ':') {
1286                             if (!isidchar(*q))
1287                                 validid = false;
1288                             q++;
1289                         }
1290                         if (!validid) {
1291                             report_error(ERR_NONFATAL,
1292                                          "identifier expected after GLOBAL");
1293                             break;
1294                         }
1295                         if (*q == ':') {
1296                             *q++ = '\0';
1297                             special = q;
1298                         } else
1299                             special = NULL;
1300                         declare_as_global(value, special, report_error);
1301                     }           /* pass == 1 */
1302                     break;
1303                 case D_COMMON:          /* [COMMON symbol size:special] */
1304                     if (*value == '$')
1305                         value++;        /* skip initial $ if present */
1306                     if (pass0 == 1) {
1307                         p = value;
1308                         validid = true;
1309                         if (!isidstart(*p))
1310                             validid = false;
1311                         while (*p && !nasm_isspace(*p)) {
1312                             if (!isidchar(*p))
1313                                 validid = false;
1314                             p++;
1315                         }
1316                         if (!validid) {
1317                             report_error(ERR_NONFATAL,
1318                                          "identifier expected after COMMON");
1319                             break;
1320                         }
1321                         if (*p) {
1322                             int64_t size;
1323
1324                             while (*p && nasm_isspace(*p))
1325                                 *p++ = '\0';
1326                             q = p;
1327                             while (*q && *q != ':')
1328                                 q++;
1329                             if (*q == ':') {
1330                                 *q++ = '\0';
1331                                 special = q;
1332                             } else
1333                                 special = NULL;
1334                             size = readnum(p, &rn_error);
1335                             if (rn_error)
1336                                 report_error(ERR_NONFATAL,
1337                                              "invalid size specified"
1338                                              " in COMMON declaration");
1339                             else
1340                                 define_common(value, seg_alloc(), size,
1341                                               special, ofmt, report_error);
1342                         } else
1343                             report_error(ERR_NONFATAL,
1344                                          "no size specified in"
1345                                          " COMMON declaration");
1346                     } else if (pass0 == 2) {    /* pass == 2 */
1347                         q = value;
1348                         while (*q && *q != ':') {
1349                             if (nasm_isspace(*q))
1350                                 *q = '\0';
1351                             q++;
1352                         }
1353                         if (*q == ':') {
1354                             *q++ = '\0';
1355                             ofmt->symdef(value, 0L, 0L, 3, q);
1356                         }
1357                     }
1358                     break;
1359                 case D_ABSOLUTE:                /* [ABSOLUTE address] */
1360                     stdscan_reset();
1361                     stdscan_bufptr = value;
1362                     tokval.t_type = TOKEN_INVALID;
1363                     e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1364                                  report_error, NULL);
1365                     if (e) {
1366                         if (!is_reloc(e))
1367                             report_error(pass0 ==
1368                                          1 ? ERR_NONFATAL : ERR_PANIC,
1369                                          "cannot use non-relocatable expression as "
1370                                          "ABSOLUTE address");
1371                         else {
1372                             abs_seg = reloc_seg(e);
1373                             abs_offset = reloc_value(e);
1374                         }
1375                     } else if (passn == 1)
1376                         abs_offset = 0x100;     /* don't go near zero in case of / */
1377                     else
1378                         report_error(ERR_PANIC, "invalid ABSOLUTE address "
1379                                      "in pass two");
1380                     in_abs_seg = true;
1381                     location.segment = NO_SEG;
1382                     break;
1383                 case D_DEBUG:           /* [DEBUG] */
1384                     p = value;
1385                     q = debugid;
1386                     validid = true;
1387                     if (!isidstart(*p))
1388                         validid = false;
1389                     while (*p && !nasm_isspace(*p)) {
1390                         if (!isidchar(*p))
1391                             validid = false;
1392                         *q++ = *p++;
1393                     }
1394                     *q++ = 0;
1395                     if (!validid) {
1396                         report_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1397                                      "identifier expected after DEBUG");
1398                         break;
1399                     }
1400                     while (*p && nasm_isspace(*p))
1401                         p++;
1402                     if (pass0 == 2)
1403                         ofmt->current_dfmt->debug_directive(debugid, p);
1404                     break;
1405                 case D_WARNING:         /* [WARNING {+|-|*}warn-name] */
1406                     if (pass1 == 1) {
1407                         while (*value && nasm_isspace(*value))
1408                             value++;
1409
1410                         switch(*value) {
1411                             case '-': validid = 1; value++; break;
1412                             case '+': validid = 1; value++; break;
1413                             case '*': validid = 2; value++; break;
1414                             default:  validid = 1; break;
1415                         }
1416
1417                         for (i = 1; i <= ERR_WARN_MAX; i++)
1418                             if (!nasm_stricmp(value, warnings[i].name))
1419                                 break;
1420                         if (i <= ERR_WARN_MAX) {
1421                             switch(validid) {
1422                             case 0:
1423                                 warning_on[i] = false;
1424                                 break;
1425                             case 1:
1426                                 warning_on[i] = true;
1427                                 break;
1428                             case 2:
1429                                 warning_on[i] = warning_on_global[i];
1430                                 break;
1431                             }
1432                         }
1433                         else
1434                             report_error(ERR_NONFATAL,
1435                                          "invalid warning id in WARNING directive");
1436                     }
1437                     break;
1438                 case D_CPU:             /* [CPU] */
1439                     cpu = get_cpu(value);
1440                     break;
1441                 case D_LIST:            /* [LIST {+|-}] */
1442                     while (*value && nasm_isspace(*value))
1443                         value++;
1444
1445                     if (*value == '+') {
1446                         user_nolist = 0;
1447                     } else {
1448                         if (*value == '-') {
1449                             user_nolist = 1;
1450                         } else {
1451                             err = 1;
1452                         }
1453                     }
1454                     break;
1455                 case D_DEFAULT:         /* [DEFAULT] */
1456                     stdscan_reset();
1457                     stdscan_bufptr = value;
1458                     tokval.t_type = TOKEN_INVALID;
1459                     if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1460                         switch ((int)tokval.t_integer) {
1461                         case S_REL:
1462                             globalrel = 1;
1463                             break;
1464                         case S_ABS:
1465                             globalrel = 0;
1466                             break;
1467                         default:
1468                             err = 1;
1469                             break;
1470                         }
1471                     } else {
1472                         err = 1;
1473                     }
1474                     break;
1475                 case D_FLOAT:
1476                     if (float_option(value)) {
1477                         report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1478                                      "unknown 'float' directive: %s",
1479                                      value);
1480                     }
1481                     break;
1482                 default:
1483                     if (!ofmt->directive(directive, value, pass2))
1484                         report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1485                                      "unrecognised directive [%s]",
1486                                      directive);
1487                 }
1488                 if (err) {
1489                     report_error(ERR_NONFATAL,
1490                                  "invalid parameter to [%s] directive",
1491                                  directive);
1492                 }
1493             } else {            /* it isn't a directive */
1494
1495                 parse_line(pass1, line, &output_ins,
1496                            report_error, evaluate, def_label);
1497
1498                 if (optimizing > 0) {
1499                     if (forwref != NULL && globallineno == forwref->lineno) {
1500                         output_ins.forw_ref = true;
1501                         do {
1502                             output_ins.oprs[forwref->operand].opflags |=
1503                                 OPFLAG_FORWARD;
1504                             forwref = saa_rstruct(forwrefs);
1505                         } while (forwref != NULL
1506                                  && forwref->lineno == globallineno);
1507                     } else
1508                         output_ins.forw_ref = false;
1509                 }
1510
1511                 if (optimizing > 0) {
1512                     if (passn == 1) {
1513                         for (i = 0; i < output_ins.operands; i++) {
1514                             if (output_ins.oprs[i].
1515                                 opflags & OPFLAG_FORWARD) {
1516                                 struct forwrefinfo *fwinf =
1517                                     (struct forwrefinfo *)
1518                                     saa_wstruct(forwrefs);
1519                                 fwinf->lineno = globallineno;
1520                                 fwinf->operand = i;
1521                             }
1522                         }
1523                     }
1524                 }
1525
1526                 /*  forw_ref */
1527                 if (output_ins.opcode == I_EQU) {
1528                     if (pass1 == 1) {
1529                         /*
1530                          * Special `..' EQUs get processed in pass two,
1531                          * except `..@' macro-processor EQUs which are done
1532                          * in the normal place.
1533                          */
1534                         if (!output_ins.label)
1535                             report_error(ERR_NONFATAL,
1536                                          "EQU not preceded by label");
1537
1538                         else if (output_ins.label[0] != '.' ||
1539                                  output_ins.label[1] != '.' ||
1540                                  output_ins.label[2] == '@') {
1541                             if (output_ins.operands == 1 &&
1542                                 (output_ins.oprs[0].type & IMMEDIATE) &&
1543                                 output_ins.oprs[0].wrt == NO_SEG) {
1544                                 int isext =
1545                                     output_ins.oprs[0].
1546                                     opflags & OPFLAG_EXTERN;
1547                                 def_label(output_ins.label,
1548                                           output_ins.oprs[0].segment,
1549                                           output_ins.oprs[0].offset, NULL,
1550                                           false, isext, ofmt,
1551                                           report_error);
1552                             } else if (output_ins.operands == 2
1553                                        && (output_ins.oprs[0].
1554                                            type & IMMEDIATE)
1555                                        && (output_ins.oprs[0].type & COLON)
1556                                        && output_ins.oprs[0].segment ==
1557                                        NO_SEG
1558                                        && output_ins.oprs[0].wrt == NO_SEG
1559                                        && (output_ins.oprs[1].
1560                                            type & IMMEDIATE)
1561                                        && output_ins.oprs[1].segment ==
1562                                        NO_SEG
1563                                        && output_ins.oprs[1].wrt ==
1564                                        NO_SEG) {
1565                                 def_label(output_ins.label,
1566                                           output_ins.oprs[0].
1567                                           offset | SEG_ABS,
1568                                           output_ins.oprs[1].offset, NULL,
1569                                           false, false, ofmt,
1570                                           report_error);
1571                             } else
1572                                 report_error(ERR_NONFATAL,
1573                                              "bad syntax for EQU");
1574                         }
1575                     } else {
1576                         /*
1577                          * Special `..' EQUs get processed here, except
1578                          * `..@' macro processor EQUs which are done above.
1579                          */
1580                         if (output_ins.label[0] == '.' &&
1581                             output_ins.label[1] == '.' &&
1582                             output_ins.label[2] != '@') {
1583                             if (output_ins.operands == 1 &&
1584                                 (output_ins.oprs[0].type & IMMEDIATE)) {
1585                                 define_label(output_ins.label,
1586                                              output_ins.oprs[0].segment,
1587                                              output_ins.oprs[0].offset,
1588                                              NULL, false, false, ofmt,
1589                                              report_error);
1590                             } else if (output_ins.operands == 2
1591                                        && (output_ins.oprs[0].
1592                                            type & IMMEDIATE)
1593                                        && (output_ins.oprs[0].type & COLON)
1594                                        && output_ins.oprs[0].segment ==
1595                                        NO_SEG
1596                                        && (output_ins.oprs[1].
1597                                            type & IMMEDIATE)
1598                                        && output_ins.oprs[1].segment ==
1599                                        NO_SEG) {
1600                                 define_label(output_ins.label,
1601                                              output_ins.oprs[0].
1602                                              offset | SEG_ABS,
1603                                              output_ins.oprs[1].offset,
1604                                              NULL, false, false, ofmt,
1605                                              report_error);
1606                             } else
1607                                 report_error(ERR_NONFATAL,
1608                                              "bad syntax for EQU");
1609                         }
1610                     }
1611                 } else {        /* instruction isn't an EQU */
1612
1613                     if (pass1 == 1) {
1614
1615                         int64_t l = insn_size(location.segment, offs, sb, cpu,
1616                                            &output_ins, report_error);
1617
1618                         /* if (using_debug_info)  && output_ins.opcode != -1) */
1619                         if (using_debug_info)
1620                         {       /* fbk 03/25/01 */
1621                             /* this is done here so we can do debug type info */
1622                             int32_t typeinfo =
1623                                 TYS_ELEMENTS(output_ins.operands);
1624                             switch (output_ins.opcode) {
1625                             case I_RESB:
1626                                 typeinfo =
1627                                     TYS_ELEMENTS(output_ins.oprs[0].
1628                                                  offset) | TY_BYTE;
1629                                 break;
1630                             case I_RESW:
1631                                 typeinfo =
1632                                     TYS_ELEMENTS(output_ins.oprs[0].
1633                                                  offset) | TY_WORD;
1634                                 break;
1635                             case I_RESD:
1636                                 typeinfo =
1637                                     TYS_ELEMENTS(output_ins.oprs[0].
1638                                                  offset) | TY_DWORD;
1639                                 break;
1640                             case I_RESQ:
1641                                 typeinfo =
1642                                     TYS_ELEMENTS(output_ins.oprs[0].
1643                                                  offset) | TY_QWORD;
1644                                 break;
1645                             case I_REST:
1646                                 typeinfo =
1647                                     TYS_ELEMENTS(output_ins.oprs[0].
1648                                                  offset) | TY_TBYTE;
1649                                 break;
1650                             case I_RESO:
1651                                 typeinfo =
1652                                     TYS_ELEMENTS(output_ins.oprs[0].
1653                                                  offset) | TY_OWORD;
1654                                 break;
1655                             case I_RESY:
1656                                 typeinfo =
1657                                     TYS_ELEMENTS(output_ins.oprs[0].
1658                                                  offset) | TY_YWORD;
1659                                 break;
1660                             case I_DB:
1661                                 typeinfo |= TY_BYTE;
1662                                 break;
1663                             case I_DW:
1664                                 typeinfo |= TY_WORD;
1665                                 break;
1666                             case I_DD:
1667                                 if (output_ins.eops_float)
1668                                     typeinfo |= TY_FLOAT;
1669                                 else
1670                                     typeinfo |= TY_DWORD;
1671                                 break;
1672                             case I_DQ:
1673                                 typeinfo |= TY_QWORD;
1674                                 break;
1675                             case I_DT:
1676                                 typeinfo |= TY_TBYTE;
1677                                 break;
1678                             case I_DO:
1679                                 typeinfo |= TY_OWORD;
1680                                 break;
1681                             case I_DY:
1682                                 typeinfo |= TY_YWORD;
1683                                 break;
1684                             default:
1685                                 typeinfo = TY_LABEL;
1686
1687                             }
1688
1689                             ofmt->current_dfmt->debug_typevalue(typeinfo);
1690
1691                         }
1692                         if (l != -1) {
1693                             offs += l;
1694                             SET_CURR_OFFS(offs);
1695                         }
1696                         /*
1697                          * else l == -1 => invalid instruction, which will be
1698                          * flagged as an error on pass 2
1699                          */
1700
1701                     } else {
1702                         offs += assemble(location.segment, offs, sb, cpu,
1703                                          &output_ins, ofmt, report_error,
1704                                          &nasmlist);
1705                         SET_CURR_OFFS(offs);
1706
1707                     }
1708                 }               /* not an EQU */
1709                 cleanup_insn(&output_ins);
1710             }
1711             nasm_free(line);
1712             location.offset = offs = GET_CURR_OFFS;
1713         }                       /* end while (line = preproc->getline... */
1714         if (pass1 == 2 && global_offset_changed)
1715             report_error(ERR_NONFATAL,
1716                          "phase error detected at end of assembly.");
1717
1718         if (pass1 == 1)
1719             preproc->cleanup(1);
1720
1721         if (pass1 == 1 && terminate_after_phase) {
1722             fclose(ofile);
1723             remove(outname);
1724             if (want_usage)
1725                 usage();
1726             exit(1);
1727         }
1728
1729         if (passn > 1 && !global_offset_changed)
1730             pass0++;
1731         else if (global_offset_changed && global_offset_changed < prev_offset_changed) {
1732             prev_offset_changed = global_offset_changed;
1733             stall_count = 0;
1734             }
1735         else stall_count++;
1736
1737         if((stall_count > 997) || (passn >= pass_max))
1738             /* We get here if the labels don't converge
1739              * Example: FOO equ FOO + 1
1740              */
1741              report_error(ERR_NONFATAL,
1742                           "Can't find valid values for all labels "
1743                           "after %d passes, giving up.\n"
1744                           "                  Possible cause: recursive equ's.", passn);
1745     }
1746
1747     preproc->cleanup(0);
1748     nasmlist.cleanup();
1749     if (opt_verbose_info)     /*  -On and -Ov switches */
1750         fprintf(stdout,
1751                 "info:: assembly required 1+%d+1 passes\n", passn-3);
1752 }                               /* exit from assemble_file (...) */
1753
1754 static enum directives getkw(char **directive, char **value)
1755 {
1756     char *p, *q, *buf;
1757
1758     buf = *directive;
1759
1760     /*  allow leading spaces or tabs */
1761     while (*buf == ' ' || *buf == '\t')
1762         buf++;
1763
1764     if (*buf != '[')
1765         return 0;
1766
1767     p = buf;
1768
1769     while (*p && *p != ']')
1770         p++;
1771
1772     if (!*p)
1773         return 0;
1774
1775     q = p++;
1776
1777     while (*p && *p != ';') {
1778         if (!nasm_isspace(*p))
1779             return 0;
1780         p++;
1781     }
1782     q[1] = '\0';
1783
1784     *directive = p = buf + 1;
1785     while (*buf && *buf != ' ' && *buf != ']' && *buf != '\t')
1786         buf++;
1787     if (*buf == ']') {
1788         *buf = '\0';
1789         *value = buf;
1790     } else {
1791         *buf++ = '\0';
1792         while (nasm_isspace(*buf))
1793             buf++;              /* beppu - skip leading whitespace */
1794         *value = buf;
1795         while (*buf != ']')
1796             buf++;
1797         *buf++ = '\0';
1798     }
1799
1800     return bsii(*directive, directives, elements(directives));
1801 }
1802
1803 /**
1804  * gnu style error reporting
1805  * This function prints an error message to error_file in the
1806  * style used by GNU. An example would be:
1807  * file.asm:50: error: blah blah blah
1808  * where file.asm is the name of the file, 50 is the line number on
1809  * which the error occurs (or is detected) and "error:" is one of
1810  * the possible optional diagnostics -- it can be "error" or "warning"
1811  * or something else.  Finally the line terminates with the actual
1812  * error message.
1813  *
1814  * @param severity the severity of the warning or error
1815  * @param fmt the printf style format string
1816  */
1817 static void report_error_gnu(int severity, const char *fmt, ...)
1818 {
1819     va_list ap;
1820
1821     if (is_suppressed_warning(severity))
1822         return;
1823
1824     if (severity & ERR_NOFILE)
1825         fputs("nasm: ", error_file);
1826     else {
1827         char *currentfile = NULL;
1828         int32_t lineno = 0;
1829         src_get(&lineno, &currentfile);
1830         fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1831         nasm_free(currentfile);
1832     }
1833     va_start(ap, fmt);
1834     report_error_common(severity, fmt, ap);
1835     va_end(ap);
1836 }
1837
1838 /**
1839  * MS style error reporting
1840  * This function prints an error message to error_file in the
1841  * style used by Visual C and some other Microsoft tools. An example
1842  * would be:
1843  * file.asm(50) : error: blah blah blah
1844  * where file.asm is the name of the file, 50 is the line number on
1845  * which the error occurs (or is detected) and "error:" is one of
1846  * the possible optional diagnostics -- it can be "error" or "warning"
1847  * or something else.  Finally the line terminates with the actual
1848  * error message.
1849  *
1850  * @param severity the severity of the warning or error
1851  * @param fmt the printf style format string
1852  */
1853 static void report_error_vc(int severity, const char *fmt, ...)
1854 {
1855     va_list ap;
1856
1857     if (is_suppressed_warning(severity))
1858         return;
1859
1860     if (severity & ERR_NOFILE)
1861         fputs("nasm: ", error_file);
1862     else {
1863         char *currentfile = NULL;
1864         int32_t lineno = 0;
1865         src_get(&lineno, &currentfile);
1866         fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1867         nasm_free(currentfile);
1868     }
1869     va_start(ap, fmt);
1870     report_error_common(severity, fmt, ap);
1871     va_end(ap);
1872 }
1873
1874 /**
1875  * check for supressed warning
1876  * checks for suppressed warning or pass one only warning and we're
1877  * not in pass 1
1878  *
1879  * @param severity the severity of the warning or error
1880  * @return true if we should abort error/warning printing
1881  */
1882 static bool is_suppressed_warning(int severity)
1883 {
1884     /*
1885      * See if it's a suppressed warning.
1886      */
1887     return (severity & ERR_MASK) == ERR_WARNING &&
1888         (((severity & ERR_WARN_MASK) != 0 &&
1889           !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1890          /* See if it's a pass-one only warning and we're not in pass one. */
1891          ((severity & ERR_PASS1) && pass0 != 1) ||
1892          ((severity & ERR_PASS2) && pass0 != 2));
1893 }
1894
1895 /**
1896  * common error reporting
1897  * This is the common back end of the error reporting schemes currently
1898  * implemented.  It prints the nature of the warning and then the
1899  * specific error message to error_file and may or may not return.  It
1900  * doesn't return if the error severity is a "panic" or "debug" type.
1901  *
1902  * @param severity the severity of the warning or error
1903  * @param fmt the printf style format string
1904  */
1905 static void report_error_common(int severity, const char *fmt,
1906                                 va_list args)
1907 {
1908     switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1909     case ERR_WARNING:
1910         fputs("warning: ", error_file);
1911         break;
1912     case ERR_NONFATAL:
1913         fputs("error: ", error_file);
1914         break;
1915     case ERR_FATAL:
1916         fputs("fatal: ", error_file);
1917         break;
1918     case ERR_PANIC:
1919         fputs("panic: ", error_file);
1920         break;
1921     case ERR_DEBUG:
1922         fputs("debug: ", error_file);
1923         break;
1924     default:
1925         break;
1926     }
1927
1928     vfprintf(error_file, fmt, args);
1929     putc('\n', error_file);
1930
1931     if (severity & ERR_USAGE)
1932         want_usage = true;
1933
1934     switch (severity & ERR_MASK) {
1935     case ERR_DEBUG:
1936         /* no further action, by definition */
1937         break;
1938     case ERR_WARNING:
1939         if (warning_on[0])      /* Treat warnings as errors */
1940             terminate_after_phase = true;
1941         break;
1942     case ERR_NONFATAL:
1943         terminate_after_phase = true;
1944         break;
1945     case ERR_FATAL:
1946         if (ofile) {
1947             fclose(ofile);
1948             remove(outname);
1949         }
1950         if (want_usage)
1951             usage();
1952         exit(1);                /* instantly die */
1953         break;                  /* placate silly compilers */
1954     case ERR_PANIC:
1955         fflush(NULL);
1956         /*      abort();        *//* halt, catch fire, and dump core */
1957         exit(3);
1958         break;
1959     }
1960 }
1961
1962 static void usage(void)
1963 {
1964     fputs("type `nasm -h' for help\n", error_file);
1965 }
1966
1967 static void register_output_formats(void)
1968 {
1969     ofmt = ofmt_register(report_error);
1970 }
1971
1972 #define BUF_DELTA 512
1973
1974 static FILE *no_pp_fp;
1975 static efunc no_pp_err;
1976 static ListGen *no_pp_list;
1977 static int32_t no_pp_lineinc;
1978
1979 static void no_pp_reset(char *file, int pass, efunc error, evalfunc eval,
1980                         ListGen * listgen, StrList **deplist)
1981 {
1982     src_set_fname(nasm_strdup(file));
1983     src_set_linnum(0);
1984     no_pp_lineinc = 1;
1985     no_pp_err = error;
1986     no_pp_fp = fopen(file, "r");
1987     if (!no_pp_fp)
1988         no_pp_err(ERR_FATAL | ERR_NOFILE,
1989                   "unable to open input file `%s'", file);
1990     no_pp_list = listgen;
1991     (void)pass;                 /* placate compilers */
1992     (void)eval;                 /* placate compilers */
1993
1994     if (deplist) {
1995         StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
1996         sl->next = NULL;
1997         strcpy(sl->str, file);
1998         *deplist = sl;
1999     }
2000 }
2001
2002 static char *no_pp_getline(void)
2003 {
2004     char *buffer, *p, *q;
2005     int bufsize;
2006
2007     bufsize = BUF_DELTA;
2008     buffer = nasm_malloc(BUF_DELTA);
2009     src_set_linnum(src_get_linnum() + no_pp_lineinc);
2010
2011     while (1) {                 /* Loop to handle %line */
2012
2013         p = buffer;
2014         while (1) {             /* Loop to handle long lines */
2015             q = fgets(p, bufsize - (p - buffer), no_pp_fp);
2016             if (!q)
2017                 break;
2018             p += strlen(p);
2019             if (p > buffer && p[-1] == '\n')
2020                 break;
2021             if (p - buffer > bufsize - 10) {
2022                 int offset;
2023                 offset = p - buffer;
2024                 bufsize += BUF_DELTA;
2025                 buffer = nasm_realloc(buffer, bufsize);
2026                 p = buffer + offset;
2027             }
2028         }
2029
2030         if (!q && p == buffer) {
2031             nasm_free(buffer);
2032             return NULL;
2033         }
2034
2035         /*
2036          * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
2037          * them are present at the end of the line.
2038          */
2039         buffer[strcspn(buffer, "\r\n\032")] = '\0';
2040
2041         if (!nasm_strnicmp(buffer, "%line", 5)) {
2042             int32_t ln;
2043             int li;
2044             char *nm = nasm_malloc(strlen(buffer));
2045             if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
2046                 nasm_free(src_set_fname(nm));
2047                 src_set_linnum(ln);
2048                 no_pp_lineinc = li;
2049                 continue;
2050             }
2051             nasm_free(nm);
2052         }
2053         break;
2054     }
2055
2056     no_pp_list->line(LIST_READ, buffer);
2057
2058     return buffer;
2059 }
2060
2061 static void no_pp_cleanup(int pass)
2062 {
2063     (void)pass;                     /* placate GCC */
2064     fclose(no_pp_fp);
2065 }
2066
2067 static uint32_t get_cpu(char *value)
2068 {
2069     if (!strcmp(value, "8086"))
2070         return IF_8086;
2071     if (!strcmp(value, "186"))
2072         return IF_186;
2073     if (!strcmp(value, "286"))
2074         return IF_286;
2075     if (!strcmp(value, "386"))
2076         return IF_386;
2077     if (!strcmp(value, "486"))
2078         return IF_486;
2079     if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2080         return IF_PENT;
2081     if (!strcmp(value, "686") ||
2082         !nasm_stricmp(value, "ppro") ||
2083         !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2084         return IF_P6;
2085     if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2086         return IF_KATMAI;
2087     if (!nasm_stricmp(value, "p4") ||   /* is this right? -- jrc */
2088         !nasm_stricmp(value, "willamette"))
2089         return IF_WILLAMETTE;
2090     if (!nasm_stricmp(value, "prescott"))
2091         return IF_PRESCOTT;
2092     if (!nasm_stricmp(value, "x64") ||
2093         !nasm_stricmp(value, "x86-64"))
2094         return IF_X86_64;
2095     if (!nasm_stricmp(value, "ia64") ||
2096         !nasm_stricmp(value, "ia-64") ||
2097         !nasm_stricmp(value, "itanium") ||
2098         !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2099         return IF_IA64;
2100
2101     report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2102                  "unknown 'cpu' type");
2103
2104     return IF_PLEVEL;           /* the maximum level */
2105 }
2106
2107 static int get_bits(char *value)
2108 {
2109     int i;
2110
2111     if ((i = atoi(value)) == 16)
2112         return i;               /* set for a 16-bit segment */
2113     else if (i == 32) {
2114         if (cpu < IF_386) {
2115             report_error(ERR_NONFATAL,
2116                          "cannot specify 32-bit segment on processor below a 386");
2117             i = 16;
2118         }
2119     } else if (i == 64) {
2120         if (cpu < IF_X86_64) {
2121             report_error(ERR_NONFATAL,
2122                          "cannot specify 64-bit segment on processor below an x86-64");
2123             i = 16;
2124         }
2125         if (i != maxbits) {
2126             report_error(ERR_NONFATAL,
2127                          "%s output format does not support 64-bit code",
2128                          ofmt->shortname);
2129             i = 16;
2130         }
2131     } else {
2132         report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2133                      "`%s' is not a valid segment size; must be 16, 32 or 64",
2134                      value);
2135         i = 16;
2136     }
2137     return i;
2138 }
2139
2140 /* end of nasm.c */