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 licence given in the file "Licence"
   6  * distributed in the NASM archive.
   7  */
   8
   9 #include <stdio.h>
  10 #include <stdarg.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include <ctype.h>
  14 #include <inttypes.h>
  15
  16 #include "nasm.h"
  17 #include "nasmlib.h"
  18 #include "insns.h"
  19 #include "preproc.h"
  20 #include "parser.h"
  21 #include "eval.h"
  22 #include "assemble.h"
  23 #include "labels.h"
  24 #include "outform.h"
  25 #include "listing.h"
  26
  27 struct forwrefinfo {            /* info held on forward refs. */
  28     int lineno;
  29     int operand;
  30 };
  31
  32 static int get_bits(char *value);
  33 static uint32_t get_cpu(char *cpu_str);
  34 static void parse_cmdline(int, char **);
  35 static void assemble_file(char *);
  36 static int getkw(char **directive, char **value);
  37 static void register_output_formats(void);
  38 static void report_error_gnu(int severity, const char *fmt, ...);
  39 static void report_error_vc(int severity, const char *fmt, ...);
  40 static void report_error_common(int severity, const char *fmt,
  41                                 va_list args);
  42 static int is_suppressed_warning(int severity);
  43 static void usage(void);
  44 static efunc report_error;
  45
  46 static int using_debug_info, opt_verbose_info;
  47 int tasm_compatible_mode = FALSE;
  48 int pass0;
  49 int maxbits = 0;
  50
  51 static char inname[FILENAME_MAX];
  52 static char outname[FILENAME_MAX];
  53 static char listname[FILENAME_MAX];
  54 static int globallineno;        /* for forward-reference tracking */
  55 /* static int pass = 0; */
  56 static struct ofmt *ofmt = NULL;
  57
  58 static FILE *error_file;        /* Where to write error messages */
  59
  60 static FILE *ofile = NULL;
  61 int optimizing = -1;            /* number of optimization passes to take */
  62 static int sb, cmd_sb = 16;     /* by default */
  63 static uint32_t cmd_cpu = IF_PLEVEL;       /* highest level by default */
  64 static uint32_t cpu = IF_PLEVEL;   /* passed to insn_size & assemble.c */
  65 int global_offset_changed;      /* referenced in labels.c */
  66
  67 static loc_t location;
  68 int in_abs_seg;                 /* Flag we are in ABSOLUTE seg */
  69 int32_t abs_seg;                   /* ABSOLUTE segment basis */
  70 int32_t abs_offset;                /* ABSOLUTE offset */
  71
  72 static struct RAA *offsets;
  73
  74 static struct SAA *forwrefs;    /* keep track of forward references */
  75 static struct forwrefinfo *forwref;
  76
  77 static Preproc *preproc;
  78 enum op_type {
  79     op_normal,                  /* Preprocess and assemble */
  80     op_preprocess,              /* Preprocess only */
  81     op_depend                   /* Generate dependencies */
  82 };
  83 static enum op_type operating_mode;
  84
  85 /*
  86  * Which of the suppressible warnings are suppressed. Entry zero
  87  * doesn't do anything. Initial defaults are given here.
  88  */
  89 static char suppressed[1 + ERR_WARN_MAX] = {
  90     0, TRUE, TRUE, TRUE, FALSE, TRUE
  91 };
  92
  93 /*
  94  * The option names for the suppressible warnings. As before, entry
  95  * zero does nothing.
  96  */
  97 static const char *suppressed_names[1 + ERR_WARN_MAX] = {
  98     NULL, "macro-params", "macro-selfref", "orphan-labels",
  99         "number-overflow",
 100     "gnu-elf-extensions"
 101 };
 102
 103 /*
 104  * The explanations for the suppressible warnings. As before, entry
 105  * zero does nothing.
 106  */
 107 static const char *suppressed_what[1 + ERR_WARN_MAX] = {
 108     NULL,
 109     "macro calls with wrong no. of params",
 110     "cyclic macro self-references",
 111     "labels alone on lines without trailing `:'",
 112     "numeric constants greater than 0xFFFFFFFF",
 113     "using 8- or 16-bit relocation in ELF, a GNU extension"
 114 };
 115
 116 /*
 117  * This is a null preprocessor which just copies lines from input
 118  * to output. It's used when someone explicitly requests that NASM
 119  * not preprocess their source file.
 120  */
 121
 122 static void no_pp_reset(char *, int, efunc, evalfunc, ListGen *);
 123 static char *no_pp_getline(void);
 124 static void no_pp_cleanup(int);
 125 static Preproc no_pp = {
 126     no_pp_reset,
 127     no_pp_getline,
 128     no_pp_cleanup
 129 };
 130
 131 /*
 132  * get/set current offset...
 133  */
 134 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
 135                       raa_read(offsets,location.segment))
 136 #define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
 137                          (void)(offsets=raa_write(offsets,location.segment,(x))))
 138
 139 static int want_usage;
 140 static int terminate_after_phase;
 141 int user_nolist = 0;            /* fbk 9/2/00 */
 142
 143 static void nasm_fputs(const char *line, FILE * outfile)
 144 {
 145     if (outfile) {
 146         fputs(line, outfile);
 147         fputc('\n', outfile);
 148     } else
 149         puts(line);
 150 }
 151
 152 int main(int argc, char **argv)
 153 {
 154     pass0 = 1;
 155     want_usage = terminate_after_phase = FALSE;
 156     report_error = report_error_gnu;
 157
 158     nasm_set_malloc_error(report_error);
 159     offsets = raa_init();
 160     forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
 161
 162     preproc = &nasmpp;
 163     operating_mode = op_normal;
 164
 165     error_file = stderr;
 166
 167     seg_init();
 168
 169     register_output_formats();
 170
 171     parse_cmdline(argc, argv);
 172
 173     if (terminate_after_phase) {
 174         if (want_usage)
 175             usage();
 176         return 1;
 177     }
 178
 179     /* If debugging info is disabled, suppress any debug calls */
 180     if (!using_debug_info)
 181         ofmt->current_dfmt = &null_debug_form;
 182
 183     if (ofmt->stdmac)
 184         pp_extra_stdmac(ofmt->stdmac);
 185     parser_global_info(ofmt, &location);
 186     eval_global_info(ofmt, lookup_label, &location);
 187
 188     /* define some macros dependent of command-line */
 189     {
 190         char temp[64];
 191         snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s\n",
 192                  ofmt->shortname);
 193         pp_pre_define(temp);
 194     }
 195
 196     switch (operating_mode) {
 197     case op_depend:
 198         {
 199             char *line;
 200             preproc->reset(inname, 0, report_error, evaluate, &nasmlist);
 201             if (outname[0] == '\0')
 202                 ofmt->filename(inname, outname, report_error);
 203             ofile = NULL;
 204             fprintf(stdout, "%s: %s", outname, inname);
 205             while ((line = preproc->getline()))
 206                 nasm_free(line);
 207             preproc->cleanup(0);
 208             putc('\n', stdout);
 209         }
 210         break;
 211
 212     case op_preprocess:
 213         {
 214             char *line;
 215             char *file_name = NULL;
 216             int32_t prior_linnum = 0;
 217             int lineinc = 0;
 218
 219             if (*outname) {
 220                 ofile = fopen(outname, "w");
 221                 if (!ofile)
 222                     report_error(ERR_FATAL | ERR_NOFILE,
 223                                  "unable to open output file `%s'",
 224                                  outname);
 225             } else
 226                 ofile = NULL;
 227
 228             location.known = FALSE;
 229
 230 /*      pass = 1; */
 231             preproc->reset(inname, 2, report_error, evaluate, &nasmlist);
 232             while ((line = preproc->getline())) {
 233                 /*
 234                  * We generate %line directives if needed for later programs
 235                  */
 236                 int32_t linnum = prior_linnum += lineinc;
 237                 int altline = src_get(&linnum, &file_name);
 238                 if (altline) {
 239                     if (altline == 1 && lineinc == 1)
 240                         nasm_fputs("", ofile);
 241                     else {
 242                         lineinc = (altline != -1 || lineinc != 1);
 243                         fprintf(ofile ? ofile : stdout,
 244                                 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
 245                                 file_name);
 246                     }
 247                     prior_linnum = linnum;
 248                 }
 249                 nasm_fputs(line, ofile);
 250                 nasm_free(line);
 251             }
 252             nasm_free(file_name);
 253             preproc->cleanup(0);
 254             if (ofile)
 255                 fclose(ofile);
 256             if (ofile && terminate_after_phase)
 257                 remove(outname);
 258         }
 259         break;
 260
 261     case op_normal:
 262         {
 263             /*
 264              * We must call ofmt->filename _anyway_, even if the user
 265              * has specified their own output file, because some
 266              * formats (eg OBJ and COFF) use ofmt->filename to find out
 267              * the name of the input file and then put that inside the
 268              * file.
 269              */
 270             ofmt->filename(inname, outname, report_error);
 271
 272             ofile = fopen(outname, "wb");
 273             if (!ofile) {
 274                 report_error(ERR_FATAL | ERR_NOFILE,
 275                              "unable to open output file `%s'", outname);
 276             }
 277
 278             /*
 279              * We must call init_labels() before ofmt->init() since
 280              * some object formats will want to define labels in their
 281              * init routines. (eg OS/2 defines the FLAT group)
 282              */
 283             init_labels();
 284
 285             ofmt->init(ofile, report_error, define_label, evaluate);
 286
 287             assemble_file(inname);
 288
 289             if (!terminate_after_phase) {
 290                 ofmt->cleanup(using_debug_info);
 291                 cleanup_labels();
 292             } else {
 293                 /*
 294                  * We had an fclose on the output file here, but we
 295                  * actually do that in all the object file drivers as well,
 296                  * so we're leaving out the one here.
 297                  *     fclose (ofile);
 298                  */
 299                 remove(outname);
 300                 if (listname[0])
 301                     remove(listname);
 302             }
 303         }
 304         break;
 305     }
 306
 307     if (want_usage)
 308         usage();
 309
 310     raa_free(offsets);
 311     saa_free(forwrefs);
 312     eval_cleanup();
 313     nasmlib_cleanup();
 314
 315     if (terminate_after_phase)
 316         return 1;
 317     else
 318         return 0;
 319 }
 320
 321 /*
 322  * Get a parameter for a command line option.
 323  * First arg must be in the form of e.g. -f...
 324  */
 325 static char *get_param(char *p, char *q, int *advance)
 326 {
 327     *advance = 0;
 328     if (p[2]) {                 /* the parameter's in the option */
 329         p += 2;
 330         while (isspace(*p))
 331             p++;
 332         return p;
 333     }
 334     if (q && q[0]) {
 335         *advance = 1;
 336         return q;
 337     }
 338     report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 339                  "option `-%c' requires an argument", p[1]);
 340     return NULL;
 341 }
 342
 343 struct textargs {
 344     const char *label;
 345     int value;
 346 };
 347
 348 #define OPT_PREFIX 0
 349 #define OPT_POSTFIX 1
 350 struct textargs textopts[] = {
 351     {"prefix", OPT_PREFIX},
 352     {"postfix", OPT_POSTFIX},
 353     {NULL, 0}
 354 };
 355
 356 int stopoptions = 0;
 357 static int process_arg(char *p, char *q)
 358 {
 359     char *param;
 360     int i, advance = 0;
 361
 362     if (!p || !p[0])
 363         return 0;
 364
 365     if (p[0] == '-' && !stopoptions) {
 366         switch (p[1]) {
 367         case 's':
 368             error_file = stdout;
 369             break;
 370         case 'o':              /* these parameters take values */
 371         case 'O':
 372         case 'f':
 373         case 'p':
 374         case 'P':
 375         case 'd':
 376         case 'D':
 377         case 'i':
 378         case 'I':
 379         case 'l':
 380         case 'E':
 381         case 'F':
 382         case 'X':
 383         case 'u':
 384         case 'U':
 385             if (!(param = get_param(p, q, &advance)))
 386                 break;
 387             if (p[1] == 'o') {  /* output file */
 388                 strcpy(outname, param);
 389             } else if (p[1] == 'f') {   /* output format */
 390                 ofmt = ofmt_find(param);
 391                 if (!ofmt) {
 392                     report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 393                                  "unrecognised output format `%s' - "
 394                                  "use -hf for a list", param);
 395                 } else
 396                     ofmt->current_dfmt = ofmt->debug_formats[0];
 397             } else if (p[1] == 'O') {   /* Optimization level */
 398                 int opt;
 399                 opt = -99;
 400                 while (*param) {
 401                     if (isdigit(*param)) {
 402                         opt = atoi(param);
 403                         while (isdigit(*++param)) ;
 404                         if (opt <= 0)
 405                             optimizing = -1;    /* 0.98 behaviour */
 406                         else if (opt == 1)
 407                             optimizing = 0;     /* Two passes, 0.98.09 behavior */
 408                         else
 409                             optimizing = opt;   /* Multiple passes */
 410                     } else {
 411                         if (*param == 'v' || *param == '+') {
 412                             ++param;
 413                             opt_verbose_info = TRUE;
 414                             opt = 0;
 415                         } else {        /* garbage */
 416                             opt = -99;
 417                             break;
 418                         }
 419                     }
 420                 }               /* while (*param) */
 421                 if (opt == -99)
 422                     report_error(ERR_FATAL,
 423                                  "command line optimization level must be 'v', 0..3 or <nn>");
 424             } else if (p[1] == 'P' || p[1] == 'p') {    /* pre-include */
 425                 pp_pre_include(param);
 426             } else if (p[1] == 'D' || p[1] == 'd') {    /* pre-define */
 427                 pp_pre_define(param);
 428             } else if (p[1] == 'U' || p[1] == 'u') {    /* un-define */
 429                 pp_pre_undefine(param);
 430             } else if (p[1] == 'I' || p[1] == 'i') {    /* include search path */
 431                 pp_include_path(param);
 432             } else if (p[1] == 'l') {   /* listing file */
 433                 strcpy(listname, param);
 434             } else if (p[1] == 'E') {   /* error messages file */
 435                 error_file = fopen(param, "w");
 436                 if (!error_file) {
 437                     error_file = stderr;        /* Revert to default! */
 438                     report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 439                                  "cannot open file `%s' for error messages",
 440                                  param);
 441                 }
 442             } else if (p[1] == 'F') {   /* specify debug format */
 443                 ofmt->current_dfmt = dfmt_find(ofmt, param);
 444                 if (!ofmt->current_dfmt) {
 445                     report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 446                                  "unrecognized debug format `%s' for"
 447                                  " output format `%s'",
 448                                  param, ofmt->shortname);
 449                 }
 450             } else if (p[1] == 'X') {   /* specify error reporting format */
 451                 if (nasm_stricmp("vc", param) == 0)
 452                     report_error = report_error_vc;
 453                 else if (nasm_stricmp("gnu", param) == 0)
 454                     report_error = report_error_gnu;
 455                 else
 456                     report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
 457                                  "unrecognized error reporting format `%s'",
 458                                  param);
 459             }
 460             break;
 461         case 'g':
 462             using_debug_info = TRUE;
 463             break;
 464         case 'h':
 465             printf
 466                 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
 467                  "[-l listfile]\n"
 468                  "            [options...] [--] filename\n"
 469                  "    or nasm -r   for version info (obsolete)\n"
 470                  "    or nasm -v   for version info (preferred)\n\n"
 471                  "    -t          assemble in SciTech TASM compatible mode\n"
 472                  "    -g          generate debug information in selected format.\n");
 473             printf
 474                 ("    -e          preprocess only (writes output to stdout by default)\n"
 475                  "    -a          don't preprocess (assemble only)\n"
 476                  "    -M          generate Makefile dependencies on stdout\n\n"
 477                  "    -E<file>    redirect error messages to file\n"
 478                  "    -s          redirect error messages to stdout\n\n"
 479                  "    -F format   select a debugging format\n\n"
 480                  "    -I<path>    adds a pathname to the include file path\n");
 481             printf
 482                 ("    -O<digit>   optimize branch offsets (-O0 disables, default)\n"
 483                  "    -P<file>    pre-includes a file\n"
 484                  "    -D<macro>[=<value>] pre-defines a macro\n"
 485                  "    -U<macro>   undefines a macro\n"
 486                  "    -X<format>  specifies error reporting format (gnu or vc)\n"
 487                  "    -w+foo      enables warnings about foo; -w-foo disables them\n"
 488                  "where foo can be:\n");
 489             for (i = 1; i <= ERR_WARN_MAX; i++)
 490                 printf("    %-23s %s (default %s)\n",
 491                        suppressed_names[i], suppressed_what[i],
 492                        suppressed[i] ? "off" : "on");
 493             printf
 494                 ("\nresponse files should contain command line parameters"
 495                  ", one per line.\n");
 496             if (p[2] == 'f') {
 497                 printf("\nvalid output formats for -f are"
 498                        " (`*' denotes default):\n");
 499                 ofmt_list(ofmt, stdout);
 500             } else {
 501                 printf("\nFor a list of valid output formats, use -hf.\n");
 502                 printf("For a list of debug formats, use -f <form> -y.\n");
 503             }
 504             exit(0);            /* never need usage message here */
 505             break;
 506         case 'y':
 507             printf("\nvalid debug formats for '%s' output format are"
 508                    " ('*' denotes default):\n", ofmt->shortname);
 509             dfmt_list(ofmt, stdout);
 510             exit(0);
 511             break;
 512         case 't':
 513             tasm_compatible_mode = TRUE;
 514             break;
 515         case 'r':
 516         case 'v':
 517             {
 518                 const char *nasm_version_string =
 519                     "NASM version " NASM_VER " compiled on " __DATE__
 520 #ifdef DEBUG
 521                     " with -DDEBUG"
 522 #endif
 523                     ;
 524                 puts(nasm_version_string);
 525                 exit(0);        /* never need usage message here */
 526             }
 527             break;
 528         case 'e':              /* preprocess only */
 529             operating_mode = op_preprocess;
 530             break;
 531         case 'a':              /* assemble only - don't preprocess */
 532             preproc = &no_pp;
 533             break;
 534         case 'w':
 535             if (p[2] != '+' && p[2] != '-') {
 536                 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 537                              "invalid option to `-w'");
 538             } else {
 539                 for (i = 1; i <= ERR_WARN_MAX; i++)
 540                     if (!nasm_stricmp(p + 3, suppressed_names[i]))
 541                         break;
 542                 if (i <= ERR_WARN_MAX)
 543                     suppressed[i] = (p[2] == '-');
 544                 else
 545                     report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 546                                  "invalid option to `-w'");
 547             }
 548             break;
 549         case 'M':
 550             operating_mode = op_depend;
 551             break;
 552
 553         case '-':
 554             {
 555                 int s;
 556
 557                 if (p[2] == 0) {        /* -- => stop processing options */
 558                     stopoptions = 1;
 559                     break;
 560                 }
 561                 for (s = 0; textopts[s].label; s++) {
 562                     if (!nasm_stricmp(p + 2, textopts[s].label)) {
 563                         break;
 564                     }
 565                 }
 566
 567                 switch (s) {
 568
 569                 case OPT_PREFIX:
 570                 case OPT_POSTFIX:
 571                     {
 572                         if (!q) {
 573                             report_error(ERR_NONFATAL | ERR_NOFILE |
 574                                          ERR_USAGE,
 575                                          "option `--%s' requires an argument",
 576                                          p + 2);
 577                             break;
 578                         } else {
 579                             advance = 1, param = q;
 580                         }
 581
 582                         if (s == OPT_PREFIX) {
 583                             strncpy(lprefix, param, PREFIX_MAX - 1);
 584                             lprefix[PREFIX_MAX - 1] = 0;
 585                             break;
 586                         }
 587                         if (s == OPT_POSTFIX) {
 588                             strncpy(lpostfix, param, POSTFIX_MAX - 1);
 589                             lpostfix[POSTFIX_MAX - 1] = 0;
 590                             break;
 591                         }
 592                         break;
 593                     }
 594                 default:
 595                     {
 596                         report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 597                                      "unrecognised option `--%s'", p + 2);
 598                         break;
 599                     }
 600                 }
 601                 break;
 602             }
 603
 604         default:
 605             if (!ofmt->setinfo(GI_SWITCH, &p))
 606                 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 607                              "unrecognised option `-%c'", p[1]);
 608             break;
 609         }
 610     } else {
 611         if (*inname) {
 612             report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 613                          "more than one input file specified");
 614         } else
 615             strcpy(inname, p);
 616     }
 617
 618     return advance;
 619 }
 620
 621 #define ARG_BUF_DELTA 128
 622
 623 static void process_respfile(FILE * rfile)
 624 {
 625     char *buffer, *p, *q, *prevarg;
 626     int bufsize, prevargsize;
 627
 628     bufsize = prevargsize = ARG_BUF_DELTA;
 629     buffer = nasm_malloc(ARG_BUF_DELTA);
 630     prevarg = nasm_malloc(ARG_BUF_DELTA);
 631     prevarg[0] = '\0';
 632
 633     while (1) {                 /* Loop to handle all lines in file */
 634
 635         p = buffer;
 636         while (1) {             /* Loop to handle long lines */
 637             q = fgets(p, bufsize - (p - buffer), rfile);
 638             if (!q)
 639                 break;
 640             p += strlen(p);
 641             if (p > buffer && p[-1] == '\n')
 642                 break;
 643             if (p - buffer > bufsize - 10) {
 644                 int offset;
 645                 offset = p - buffer;
 646                 bufsize += ARG_BUF_DELTA;
 647                 buffer = nasm_realloc(buffer, bufsize);
 648                 p = buffer + offset;
 649             }
 650         }
 651
 652         if (!q && p == buffer) {
 653             if (prevarg[0])
 654                 process_arg(prevarg, NULL);
 655             nasm_free(buffer);
 656             nasm_free(prevarg);
 657             return;
 658         }
 659
 660         /*
 661          * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
 662          * them are present at the end of the line.
 663          */
 664         *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
 665
 666         while (p > buffer && isspace(p[-1]))
 667             *--p = '\0';
 668
 669         p = buffer;
 670         while (isspace(*p))
 671             p++;
 672
 673         if (process_arg(prevarg, p))
 674             *p = '\0';
 675
 676         if (strlen(p) > prevargsize - 10) {
 677             prevargsize += ARG_BUF_DELTA;
 678             prevarg = nasm_realloc(prevarg, prevargsize);
 679         }
 680         strcpy(prevarg, p);
 681     }
 682 }
 683
 684 /* Function to process args from a string of args, rather than the
 685  * argv array. Used by the environment variable and response file
 686  * processing.
 687  */
 688 static void process_args(char *args)
 689 {
 690     char *p, *q, *arg, *prevarg;
 691     char separator = ' ';
 692
 693     p = args;
 694     if (*p && *p != '-')
 695         separator = *p++;
 696     arg = NULL;
 697     while (*p) {
 698         q = p;
 699         while (*p && *p != separator)
 700             p++;
 701         while (*p == separator)
 702             *p++ = '\0';
 703         prevarg = arg;
 704         arg = q;
 705         if (process_arg(prevarg, arg))
 706             arg = NULL;
 707     }
 708     if (arg)
 709         process_arg(arg, NULL);
 710 }
 711
 712 static void parse_cmdline(int argc, char **argv)
 713 {
 714     FILE *rfile;
 715     char *envreal, *envcopy = NULL, *p, *arg;
 716
 717     *inname = *outname = *listname = '\0';
 718
 719     /*
 720      * First, process the NASMENV environment variable.
 721      */
 722     envreal = getenv("NASMENV");
 723     arg = NULL;
 724     if (envreal) {
 725         envcopy = nasm_strdup(envreal);
 726         process_args(envcopy);
 727         nasm_free(envcopy);
 728     }
 729
 730     /*
 731      * Now process the actual command line.
 732      */
 733     while (--argc) {
 734         int i;
 735         argv++;
 736         if (argv[0][0] == '@') {
 737             /* We have a response file, so process this as a set of
 738              * arguments like the environment variable. This allows us
 739              * to have multiple arguments on a single line, which is
 740              * different to the -@resp file processing below for regular
 741              * NASM.
 742              */
 743             char *str = malloc(2048);
 744             FILE *f = fopen(&argv[0][1], "r");
 745             if (!str) {
 746                 printf("out of memory");
 747                 exit(-1);
 748             }
 749             if (f) {
 750                 while (fgets(str, 2048, f)) {
 751                     process_args(str);
 752                 }
 753                 fclose(f);
 754             }
 755             free(str);
 756             argc--;
 757             argv++;
 758         }
 759         if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
 760             p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &i);
 761             if (p) {
 762                 rfile = fopen(p, "r");
 763                 if (rfile) {
 764                     process_respfile(rfile);
 765                     fclose(rfile);
 766                 } else
 767                     report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 768                                  "unable to open response file `%s'", p);
 769             }
 770         } else
 771             i = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
 772         argv += i, argc -= i;
 773     }
 774
 775     if (!*inname)
 776         report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
 777                      "no input file specified");
 778 }
 779
 780 static void assemble_file(char *fname)
 781 {
 782     char *directive, *value, *p, *q, *special, *line, debugid[80];
 783     insn output_ins;
 784     int i, rn_error, validid;
 785     int32_t seg, offs;
 786     struct tokenval tokval;
 787     expr *e;
 788     int pass, pass_max;
 789     int pass_cnt = 0;           /* count actual passes */
 790
 791     if (cmd_sb == 32 && cmd_cpu < IF_386)
 792         report_error(ERR_FATAL, "command line: "
 793                      "32-bit segment size requires a higher cpu");
 794
 795     pass_max = (optimizing > 0 ? optimizing : 0) + 2;   /* passes 1, optimizing, then 2 */
 796     pass0 = !(optimizing > 0);  /* start at 1 if not optimizing */
 797     for (pass = 1; pass <= pass_max && pass0 <= 2; pass++) {
 798         int pass1, pass2;
 799         ldfunc def_label;
 800
 801         pass1 = pass < pass_max ? 1 : 2;        /* seq is 1, 1, 1,..., 1, 2 */
 802         pass2 = pass > 1 ? 2 : 1;       /* seq is 1, 2, 2,..., 2, 2 */
 803         /*      pass0                            seq is 0, 0, 0,..., 1, 2 */
 804
 805         def_label = pass > 1 ? redefine_label : define_label;
 806
 807         globalbits = sb = cmd_sb;   /* set 'bits' to command line default */
 808         cpu = cmd_cpu;
 809         if (pass0 == 2) {
 810             if (*listname)
 811                 nasmlist.init(listname, report_error);
 812         }
 813         in_abs_seg = FALSE;
 814         global_offset_changed = FALSE;  /* set by redefine_label */
 815         location.segment = ofmt->section(NULL, pass2, &sb);
 816         globalbits = sb;
 817         if (pass > 1) {
 818             saa_rewind(forwrefs);
 819             forwref = saa_rstruct(forwrefs);
 820             raa_free(offsets);
 821             offsets = raa_init();
 822         }
 823         preproc->reset(fname, pass1, report_error, evaluate, &nasmlist);
 824         globallineno = 0;
 825         if (pass == 1)
 826             location.known = TRUE;
 827         location.offset = offs = GET_CURR_OFFS;
 828
 829         while ((line = preproc->getline())) {
 830             globallineno++;
 831
 832             /* here we parse our directives; this is not handled by the 'real'
 833              * parser. */
 834             directive = line;
 835             i = getkw(&directive, &value);
 836             if (i) {
 837                 switch (i) {
 838                 case 1:        /* [SEGMENT n] */
 839                     seg = ofmt->section(value, pass2, &sb);
 840                     if (seg == NO_SEG) {
 841                         report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
 842                                      "segment name `%s' not recognized",
 843                                      value);
 844                     } else {
 845                         in_abs_seg = FALSE;
 846                         location.segment = seg;
 847                     }
 848                     break;
 849                 case 2:        /* [EXTERN label:special] */
 850                     if (*value == '$')
 851                         value++;        /* skip initial $ if present */
 852                     if (pass0 == 2) {
 853                         q = value;
 854                         while (*q && *q != ':')
 855                             q++;
 856                         if (*q == ':') {
 857                             *q++ = '\0';
 858                             ofmt->symdef(value, 0L, 0L, 3, q);
 859                         }
 860                     } else if (pass == 1) {     /* pass == 1 */
 861                         q = value;
 862                         validid = TRUE;
 863                         if (!isidstart(*q))
 864                             validid = FALSE;
 865                         while (*q && *q != ':') {
 866                             if (!isidchar(*q))
 867                                 validid = FALSE;
 868                             q++;
 869                         }
 870                         if (!validid) {
 871                             report_error(ERR_NONFATAL,
 872                                          "identifier expected after EXTERN");
 873                             break;
 874                         }
 875                         if (*q == ':') {
 876                             *q++ = '\0';
 877                             special = q;
 878                         } else
 879                             special = NULL;
 880                         if (!is_extern(value)) {        /* allow re-EXTERN to be ignored */
 881                             int temp = pass0;
 882                             pass0 = 1;  /* fake pass 1 in labels.c */
 883                             declare_as_global(value, special,
 884                                               report_error);
 885                             define_label(value, seg_alloc(), 0L, NULL,
 886                                          FALSE, TRUE, ofmt, report_error);
 887                             pass0 = temp;
 888                         }
 889                     }           /* else  pass0 == 1 */
 890                     break;
 891                 case 3:        /* [BITS bits] */
 892                     globalbits = sb = get_bits(value);
 893                     break;
 894                 case 4:        /* [GLOBAL symbol:special] */
 895                     if (*value == '$')
 896                         value++;        /* skip initial $ if present */
 897                     if (pass0 == 2) {   /* pass 2 */
 898                         q = value;
 899                         while (*q && *q != ':')
 900                             q++;
 901                         if (*q == ':') {
 902                             *q++ = '\0';
 903                             ofmt->symdef(value, 0L, 0L, 3, q);
 904                         }
 905                     } else if (pass2 == 1) {    /* pass == 1 */
 906                         q = value;
 907                         validid = TRUE;
 908                         if (!isidstart(*q))
 909                             validid = FALSE;
 910                         while (*q && *q != ':') {
 911                             if (!isidchar(*q))
 912                                 validid = FALSE;
 913                             q++;
 914                         }
 915                         if (!validid) {
 916                             report_error(ERR_NONFATAL,
 917                                          "identifier expected after GLOBAL");
 918                             break;
 919                         }
 920                         if (*q == ':') {
 921                             *q++ = '\0';
 922                             special = q;
 923                         } else
 924                             special = NULL;
 925                         declare_as_global(value, special, report_error);
 926                     }           /* pass == 1 */
 927                     break;
 928                 case 5:        /* [COMMON symbol size:special] */
 929                     if (*value == '$')
 930                         value++;        /* skip initial $ if present */
 931                     if (pass0 == 1) {
 932                         p = value;
 933                         validid = TRUE;
 934                         if (!isidstart(*p))
 935                             validid = FALSE;
 936                         while (*p && !isspace(*p)) {
 937                             if (!isidchar(*p))
 938                                 validid = FALSE;
 939                             p++;
 940                         }
 941                         if (!validid) {
 942                             report_error(ERR_NONFATAL,
 943                                          "identifier expected after COMMON");
 944                             break;
 945                         }
 946                         if (*p) {
 947                             int64_t size;
 948
 949                             while (*p && isspace(*p))
 950                                 *p++ = '\0';
 951                             q = p;
 952                             while (*q && *q != ':')
 953                                 q++;
 954                             if (*q == ':') {
 955                                 *q++ = '\0';
 956                                 special = q;
 957                             } else
 958                                 special = NULL;
 959                             size = readnum(p, &rn_error);
 960                             if (rn_error)
 961                                 report_error(ERR_NONFATAL,
 962                                              "invalid size specified"
 963                                              " in COMMON declaration");
 964                             else
 965                                 define_common(value, seg_alloc(), size,
 966                                               special, ofmt, report_error);
 967                         } else
 968                             report_error(ERR_NONFATAL,
 969                                          "no size specified in"
 970                                          " COMMON declaration");
 971                     } else if (pass0 == 2) {    /* pass == 2 */
 972                         q = value;
 973                         while (*q && *q != ':') {
 974                             if (isspace(*q))
 975                                 *q = '\0';
 976                             q++;
 977                         }
 978                         if (*q == ':') {
 979                             *q++ = '\0';
 980                             ofmt->symdef(value, 0L, 0L, 3, q);
 981                         }
 982                     }
 983                     break;
 984                 case 6:        /* [ABSOLUTE address] */
 985                     stdscan_reset();
 986                     stdscan_bufptr = value;
 987                     tokval.t_type = TOKEN_INVALID;
 988                     e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
 989                                  report_error, NULL);
 990                     if (e) {
 991                         if (!is_reloc(e))
 992                             report_error(pass0 ==
 993                                          1 ? ERR_NONFATAL : ERR_PANIC,
 994                                          "cannot use non-relocatable expression as "
 995                                          "ABSOLUTE address");
 996                         else {
 997                             abs_seg = reloc_seg(e);
 998                             abs_offset = reloc_value(e);
 999                         }
1000                     } else if (pass == 1)
1001                         abs_offset = 0x100;     /* don't go near zero in case of / */
1002                     else
1003                         report_error(ERR_PANIC, "invalid ABSOLUTE address "
1004                                      "in pass two");
1005                     in_abs_seg = TRUE;
1006                     location.segment = NO_SEG;
1007                     break;
1008                 case 7:        /* DEBUG       */
1009                     p = value;
1010                     q = debugid;
1011                     validid = TRUE;
1012                     if (!isidstart(*p))
1013                         validid = FALSE;
1014                     while (*p && !isspace(*p)) {
1015                         if (!isidchar(*p))
1016                             validid = FALSE;
1017                         *q++ = *p++;
1018                     }
1019                     *q++ = 0;
1020                     if (!validid) {
1021                         report_error(pass == 1 ? ERR_NONFATAL : ERR_PANIC,
1022                                      "identifier expected after DEBUG");
1023                         break;
1024                     }
1025                     while (*p && isspace(*p))
1026                         p++;
1027                     if (pass == pass_max)
1028                         ofmt->current_dfmt->debug_directive(debugid, p);
1029                     break;
1030                 case 8:        /* [WARNING {+|-}warn-name] */
1031                     if (pass1 == 1) {
1032                         while (*value && isspace(*value))
1033                             value++;
1034
1035                         if (*value == '+' || *value == '-') {
1036                             validid = (*value == '-') ? TRUE : FALSE;
1037                             value++;
1038                         } else
1039                             validid = FALSE;
1040
1041                         for (i = 1; i <= ERR_WARN_MAX; i++)
1042                             if (!nasm_stricmp(value, suppressed_names[i]))
1043                                 break;
1044                         if (i <= ERR_WARN_MAX)
1045                             suppressed[i] = validid;
1046                         else
1047                             report_error(ERR_NONFATAL,
1048                                          "invalid warning id in WARNING directive");
1049                     }
1050                     break;
1051                 case 9:        /* cpu */
1052                     cpu = get_cpu(value);
1053                     break;
1054                 case 10:       /* fbk 9/2/00 *//* [LIST {+|-}] */
1055                     while (*value && isspace(*value))
1056                         value++;
1057
1058                     if (*value == '+') {
1059                         user_nolist = 0;
1060                     } else {
1061                         if (*value == '-') {
1062                             user_nolist = 1;
1063                         } else {
1064                             report_error(ERR_NONFATAL,
1065                                          "invalid parameter to \"list\" directive");
1066                         }
1067                     }
1068                     break;
1069                 default:
1070                     if (!ofmt->directive(directive, value, pass2))
1071                         report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1072                                      "unrecognised directive [%s]",
1073                                      directive);
1074                 }
1075             } else {            /* it isn't a directive */
1076
1077                 parse_line(pass1, line, &output_ins,
1078                            report_error, evaluate, def_label);
1079
1080                 if (!(optimizing > 0) && pass == 2) {
1081                     if (forwref != NULL && globallineno == forwref->lineno) {
1082                         output_ins.forw_ref = TRUE;
1083                         do {
1084                             output_ins.oprs[forwref->operand].opflags |=
1085                                 OPFLAG_FORWARD;
1086                             forwref = saa_rstruct(forwrefs);
1087                         } while (forwref != NULL
1088                                  && forwref->lineno == globallineno);
1089                     } else
1090                         output_ins.forw_ref = FALSE;
1091                 }
1092
1093                 if (!(optimizing > 0) && output_ins.forw_ref) {
1094                     if (pass == 1) {
1095                         for (i = 0; i < output_ins.operands; i++) {
1096                             if (output_ins.oprs[i].
1097                                 opflags & OPFLAG_FORWARD) {
1098                                 struct forwrefinfo *fwinf =
1099                                     (struct forwrefinfo *)
1100                                     saa_wstruct(forwrefs);
1101                                 fwinf->lineno = globallineno;
1102                                 fwinf->operand = i;
1103                             }
1104                         }
1105                     } else {    /* pass == 2 */
1106                         /*
1107                          * Hack to prevent phase error in the code
1108                          *   rol ax,x
1109                          *   x equ 1
1110                          *
1111                          * If the second operand is a forward reference,
1112                          * the UNITY property of the number 1 in that
1113                          * operand is cancelled. Otherwise the above
1114                          * sequence will cause a phase error.
1115                          *
1116                          * This hack means that the above code will
1117                          * generate 286+ code.
1118                          *
1119                          * The forward reference will mean that the
1120                          * operand will not have the UNITY property on
1121                          * the first pass, so the pass behaviours will
1122                          * be consistent.
1123                          */
1124
1125                         if (output_ins.operands >= 2 &&
1126                             (output_ins.oprs[1].opflags & OPFLAG_FORWARD))
1127                         {
1128                             output_ins.oprs[1].type &=
1129                                 ~(ONENESS | BYTENESS);
1130                         }
1131
1132                     }           /* pass == 2 */
1133
1134                 }
1135
1136                 /*  forw_ref */
1137                 if (output_ins.opcode == I_EQU) {
1138                     if (pass1 == 1) {
1139                         /*
1140                          * Special `..' EQUs get processed in pass two,
1141                          * except `..@' macro-processor EQUs which are done
1142                          * in the normal place.
1143                          */
1144                         if (!output_ins.label)
1145                             report_error(ERR_NONFATAL,
1146                                          "EQU not preceded by label");
1147
1148                         else if (output_ins.label[0] != '.' ||
1149                                  output_ins.label[1] != '.' ||
1150                                  output_ins.label[2] == '@') {
1151                             if (output_ins.operands == 1 &&
1152                                 (output_ins.oprs[0].type & IMMEDIATE) &&
1153                                 output_ins.oprs[0].wrt == NO_SEG) {
1154                                 int isext =
1155                                     output_ins.oprs[0].
1156                                     opflags & OPFLAG_EXTERN;
1157                                 def_label(output_ins.label,
1158                                           output_ins.oprs[0].segment,
1159                                           output_ins.oprs[0].offset, NULL,
1160                                           FALSE, isext, ofmt,
1161                                           report_error);
1162                             } else if (output_ins.operands == 2
1163                                        && (output_ins.oprs[0].
1164                                            type & IMMEDIATE)
1165                                        && (output_ins.oprs[0].type & COLON)
1166                                        && output_ins.oprs[0].segment ==
1167                                        NO_SEG
1168                                        && output_ins.oprs[0].wrt == NO_SEG
1169                                        && (output_ins.oprs[1].
1170                                            type & IMMEDIATE)
1171                                        && output_ins.oprs[1].segment ==
1172                                        NO_SEG
1173                                        && output_ins.oprs[1].wrt ==
1174                                        NO_SEG) {
1175                                 def_label(output_ins.label,
1176                                           output_ins.oprs[0].
1177                                           offset | SEG_ABS,
1178                                           output_ins.oprs[1].offset, NULL,
1179                                           FALSE, FALSE, ofmt,
1180                                           report_error);
1181                             } else
1182                                 report_error(ERR_NONFATAL,
1183                                              "bad syntax for EQU");
1184                         }
1185                     } else {    /* pass == 2 */
1186                         /*
1187                          * Special `..' EQUs get processed here, except
1188                          * `..@' macro processor EQUs which are done above.
1189                          */
1190                         if (output_ins.label[0] == '.' &&
1191                             output_ins.label[1] == '.' &&
1192                             output_ins.label[2] != '@') {
1193                             if (output_ins.operands == 1 &&
1194                                 (output_ins.oprs[0].type & IMMEDIATE)) {
1195                                 define_label(output_ins.label,
1196                                              output_ins.oprs[0].segment,
1197                                              output_ins.oprs[0].offset,
1198                                              NULL, FALSE, FALSE, ofmt,
1199                                              report_error);
1200                             } else if (output_ins.operands == 2
1201                                        && (output_ins.oprs[0].
1202                                            type & IMMEDIATE)
1203                                        && (output_ins.oprs[0].type & COLON)
1204                                        && output_ins.oprs[0].segment ==
1205                                        NO_SEG
1206                                        && (output_ins.oprs[1].
1207                                            type & IMMEDIATE)
1208                                        && output_ins.oprs[1].segment ==
1209                                        NO_SEG) {
1210                                 define_label(output_ins.label,
1211                                              output_ins.oprs[0].
1212                                              offset | SEG_ABS,
1213                                              output_ins.oprs[1].offset,
1214                                              NULL, FALSE, FALSE, ofmt,
1215                                              report_error);
1216                             } else
1217                                 report_error(ERR_NONFATAL,
1218                                              "bad syntax for EQU");
1219                         }
1220                     }           /* pass == 2 */
1221                 } else {        /* instruction isn't an EQU */
1222
1223                     if (pass1 == 1) {
1224
1225                         int32_t l = insn_size(location.segment, offs, sb, cpu,
1226                                            &output_ins, report_error);
1227
1228                         /* if (using_debug_info)  && output_ins.opcode != -1) */
1229                         if (using_debug_info)
1230                         {       /* fbk 03/25/01 */
1231                             /* this is done here so we can do debug type info */
1232                             int32_t typeinfo =
1233                                 TYS_ELEMENTS(output_ins.operands);
1234                             switch (output_ins.opcode) {
1235                             case I_RESB:
1236                                 typeinfo =
1237                                     TYS_ELEMENTS(output_ins.oprs[0].
1238                                                  offset) | TY_BYTE;
1239                                 break;
1240                             case I_RESW:
1241                                 typeinfo =
1242                                     TYS_ELEMENTS(output_ins.oprs[0].
1243                                                  offset) | TY_WORD;
1244                                 break;
1245                             case I_RESD:
1246                                 typeinfo =
1247                                     TYS_ELEMENTS(output_ins.oprs[0].
1248                                                  offset) | TY_DWORD;
1249                                 break;
1250                             case I_RESQ:
1251                                 typeinfo =
1252                                     TYS_ELEMENTS(output_ins.oprs[0].
1253                                                  offset) | TY_QWORD;
1254                                 break;
1255                             case I_REST:
1256                                 typeinfo =
1257                                     TYS_ELEMENTS(output_ins.oprs[0].
1258                                                  offset) | TY_TBYTE;
1259                                 break;
1260                             case I_DB:
1261                                 typeinfo |= TY_BYTE;
1262                                 break;
1263                             case I_DW:
1264                                 typeinfo |= TY_WORD;
1265                                 break;
1266                             case I_DD:
1267                                 if (output_ins.eops_float)
1268                                     typeinfo |= TY_FLOAT;
1269                                 else
1270                                     typeinfo |= TY_DWORD;
1271                                 break;
1272                             case I_DQ:
1273                                 typeinfo |= TY_QWORD;
1274                                 break;
1275                             case I_DT:
1276                                 typeinfo |= TY_TBYTE;
1277                                 break;
1278                             default:
1279                                 typeinfo = TY_LABEL;
1280
1281                             }
1282
1283                             ofmt->current_dfmt->debug_typevalue(typeinfo);
1284
1285                         }
1286                         if (l != -1) {
1287                             offs += l;
1288                             SET_CURR_OFFS(offs);
1289                         }
1290                         /*
1291                          * else l == -1 => invalid instruction, which will be
1292                          * flagged as an error on pass 2
1293                          */
1294
1295                     } else {    /* pass == 2 */
1296                         offs += assemble(location.segment, offs, sb, cpu,
1297                                          &output_ins, ofmt, report_error,
1298                                          &nasmlist);
1299                         SET_CURR_OFFS(offs);
1300
1301                     }
1302                 }               /* not an EQU */
1303                 cleanup_insn(&output_ins);
1304             }
1305             nasm_free(line);
1306             location.offset = offs = GET_CURR_OFFS;
1307         }                       /* end while (line = preproc->getline... */
1308
1309         if (pass1 == 2 && global_offset_changed)
1310             report_error(ERR_NONFATAL,
1311                          "phase error detected at end of assembly.");
1312
1313         if (pass1 == 1)
1314             preproc->cleanup(1);
1315
1316         if (pass1 == 1 && terminate_after_phase) {
1317             fclose(ofile);
1318             remove(outname);
1319             if (want_usage)
1320                 usage();
1321             exit(1);
1322         }
1323         pass_cnt++;
1324         if (pass > 1 && !global_offset_changed) {
1325             pass0++;
1326             if (pass0 == 2)
1327                 pass = pass_max - 1;
1328         } else if (!(optimizing > 0))
1329             pass0++;
1330
1331     }                           /* for (pass=1; pass<=2; pass++) */
1332
1333     preproc->cleanup(0);
1334     nasmlist.cleanup();
1335 #if 1
1336     if (optimizing > 0 && opt_verbose_info)     /*  -On and -Ov switches */
1337         fprintf(stdout,
1338                 "info:: assembly required 1+%d+1 passes\n", pass_cnt - 2);
1339 #endif
1340 }                               /* exit from assemble_file (...) */
1341
1342 static int getkw(char **directive, char **value)
1343 {
1344     char *p, *q, *buf;
1345
1346     buf = *directive;
1347
1348     /*  allow leading spaces or tabs */
1349     while (*buf == ' ' || *buf == '\t')
1350         buf++;
1351
1352     if (*buf != '[')
1353         return 0;
1354
1355     p = buf;
1356
1357     while (*p && *p != ']')
1358         p++;
1359
1360     if (!*p)
1361         return 0;
1362
1363     q = p++;
1364
1365     while (*p && *p != ';') {
1366         if (!isspace(*p))
1367             return 0;
1368         p++;
1369     }
1370     q[1] = '\0';
1371
1372     *directive = p = buf + 1;
1373     while (*buf && *buf != ' ' && *buf != ']' && *buf != '\t')
1374         buf++;
1375     if (*buf == ']') {
1376         *buf = '\0';
1377         *value = buf;
1378     } else {
1379         *buf++ = '\0';
1380         while (isspace(*buf))
1381             buf++;              /* beppu - skip leading whitespace */
1382         *value = buf;
1383         while (*buf != ']')
1384             buf++;
1385         *buf++ = '\0';
1386     }
1387 #if 0
1388     for (q = p; *q; q++)
1389         *q = tolower(*q);
1390 #endif
1391     if (!nasm_stricmp(p, "segment") || !nasm_stricmp(p, "section"))
1392         return 1;
1393     if (!nasm_stricmp(p, "extern"))
1394         return 2;
1395     if (!nasm_stricmp(p, "bits"))
1396         return 3;
1397     if (!nasm_stricmp(p, "global"))
1398         return 4;
1399     if (!nasm_stricmp(p, "common"))
1400         return 5;
1401     if (!nasm_stricmp(p, "absolute"))
1402         return 6;
1403     if (!nasm_stricmp(p, "debug"))
1404         return 7;
1405     if (!nasm_stricmp(p, "warning"))
1406         return 8;
1407     if (!nasm_stricmp(p, "cpu"))
1408         return 9;
1409     if (!nasm_stricmp(p, "list"))       /* fbk 9/2/00 */
1410         return 10;
1411     return -1;
1412 }
1413
1414 /**
1415  * gnu style error reporting
1416  * This function prints an error message to error_file in the
1417  * style used by GNU. An example would be:
1418  * file.asm:50: error: blah blah blah
1419  * where file.asm is the name of the file, 50 is the line number on
1420  * which the error occurs (or is detected) and "error:" is one of
1421  * the possible optional diagnostics -- it can be "error" or "warning"
1422  * or something else.  Finally the line terminates with the actual
1423  * error message.
1424  *
1425  * @param severity the severity of the warning or error
1426  * @param fmt the printf style format string
1427  */
1428 static void report_error_gnu(int severity, const char *fmt, ...)
1429 {
1430     va_list ap;
1431
1432     if (is_suppressed_warning(severity))
1433         return;
1434
1435     if (severity & ERR_NOFILE)
1436         fputs("nasm: ", error_file);
1437     else {
1438         char *currentfile = NULL;
1439         int32_t lineno = 0;
1440         src_get(&lineno, &currentfile);
1441         fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1442         nasm_free(currentfile);
1443     }
1444     va_start(ap, fmt);
1445     report_error_common(severity, fmt, ap);
1446     va_end(ap);
1447 }
1448
1449 /**
1450  * MS style error reporting
1451  * This function prints an error message to error_file in the
1452  * style used by Visual C and some other Microsoft tools. An example
1453  * would be:
1454  * file.asm(50) : error: blah blah blah
1455  * where file.asm is the name of the file, 50 is the line number on
1456  * which the error occurs (or is detected) and "error:" is one of
1457  * the possible optional diagnostics -- it can be "error" or "warning"
1458  * or something else.  Finally the line terminates with the actual
1459  * error message.
1460  *
1461  * @param severity the severity of the warning or error
1462  * @param fmt the printf style format string
1463  */
1464 static void report_error_vc(int severity, const char *fmt, ...)
1465 {
1466     va_list ap;
1467
1468     if (is_suppressed_warning(severity))
1469         return;
1470
1471     if (severity & ERR_NOFILE)
1472         fputs("nasm: ", error_file);
1473     else {
1474         char *currentfile = NULL;
1475         int32_t lineno = 0;
1476         src_get(&lineno, &currentfile);
1477         fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1478         nasm_free(currentfile);
1479     }
1480     va_start(ap, fmt);
1481     report_error_common(severity, fmt, ap);
1482     va_end(ap);
1483 }
1484
1485 /**
1486  * check for supressed warning
1487  * checks for suppressed warning or pass one only warning and we're
1488  * not in pass 1
1489  *
1490  * @param severity the severity of the warning or error
1491  * @return true if we should abort error/warning printing
1492  */
1493 static int is_suppressed_warning(int severity)
1494 {
1495     /*
1496      * See if it's a suppressed warning.
1497      */
1498     return ((severity & ERR_MASK) == ERR_WARNING &&
1499             (severity & ERR_WARN_MASK) != 0 &&
1500             suppressed[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1501         /*
1502          * See if it's a pass-one only warning and we're not in pass one.
1503          */
1504         ((severity & ERR_PASS1) && pass0 == 2);
1505 }
1506
1507 /**
1508  * common error reporting
1509  * This is the common back end of the error reporting schemes currently
1510  * implemented.  It prints the nature of the warning and then the
1511  * specific error message to error_file and may or may not return.  It
1512  * doesn't return if the error severity is a "panic" or "debug" type.
1513  *
1514  * @param severity the severity of the warning or error
1515  * @param fmt the printf style format string
1516  */
1517 static void report_error_common(int severity, const char *fmt,
1518                                 va_list args)
1519 {
1520     switch (severity & ERR_MASK) {
1521     case ERR_WARNING:
1522         fputs("warning: ", error_file);
1523         break;
1524     case ERR_NONFATAL:
1525         fputs("error: ", error_file);
1526         break;
1527     case ERR_FATAL:
1528         fputs("fatal: ", error_file);
1529         break;
1530     case ERR_PANIC:
1531         fputs("panic: ", error_file);
1532         break;
1533     case ERR_DEBUG:
1534         fputs("debug: ", error_file);
1535         break;
1536     }
1537
1538     vfprintf(error_file, fmt, args);
1539     fputc('\n', error_file);
1540
1541     if (severity & ERR_USAGE)
1542         want_usage = TRUE;
1543
1544     switch (severity & ERR_MASK) {
1545     case ERR_WARNING:
1546     case ERR_DEBUG:
1547         /* no further action, by definition */
1548         break;
1549     case ERR_NONFATAL:
1550         /* hack enables listing(!) on errors */
1551         terminate_after_phase = TRUE;
1552         break;
1553     case ERR_FATAL:
1554         if (ofile) {
1555             fclose(ofile);
1556             remove(outname);
1557         }
1558         if (want_usage)
1559             usage();
1560         exit(1);                /* instantly die */
1561         break;                  /* placate silly compilers */
1562     case ERR_PANIC:
1563         fflush(NULL);
1564         /*      abort();        *//* halt, catch fire, and dump core */
1565         exit(3);
1566         break;
1567     }
1568 }
1569
1570 static void usage(void)
1571 {
1572     fputs("type `nasm -h' for help\n", error_file);
1573 }
1574
1575 static void register_output_formats(void)
1576 {
1577     ofmt = ofmt_register(report_error);
1578 }
1579
1580 #define BUF_DELTA 512
1581
1582 static FILE *no_pp_fp;
1583 static efunc no_pp_err;
1584 static ListGen *no_pp_list;
1585 static int32_t no_pp_lineinc;
1586
1587 static void no_pp_reset(char *file, int pass, efunc error, evalfunc eval,
1588                         ListGen * listgen)
1589 {
1590     src_set_fname(nasm_strdup(file));
1591     src_set_linnum(0);
1592     no_pp_lineinc = 1;
1593     no_pp_err = error;
1594     no_pp_fp = fopen(file, "r");
1595     if (!no_pp_fp)
1596         no_pp_err(ERR_FATAL | ERR_NOFILE,
1597                   "unable to open input file `%s'", file);
1598     no_pp_list = listgen;
1599     (void)pass;                 /* placate compilers */
1600     (void)eval;                 /* placate compilers */
1601 }
1602
1603 static char *no_pp_getline(void)
1604 {
1605     char *buffer, *p, *q;
1606     int bufsize;
1607
1608     bufsize = BUF_DELTA;
1609     buffer = nasm_malloc(BUF_DELTA);
1610     src_set_linnum(src_get_linnum() + no_pp_lineinc);
1611
1612     while (1) {                 /* Loop to handle %line */
1613
1614         p = buffer;
1615         while (1) {             /* Loop to handle long lines */
1616             q = fgets(p, bufsize - (p - buffer), no_pp_fp);
1617             if (!q)
1618                 break;
1619             p += strlen(p);
1620             if (p > buffer && p[-1] == '\n')
1621                 break;
1622             if (p - buffer > bufsize - 10) {
1623                 int offset;
1624                 offset = p - buffer;
1625                 bufsize += BUF_DELTA;
1626                 buffer = nasm_realloc(buffer, bufsize);
1627                 p = buffer + offset;
1628             }
1629         }
1630
1631         if (!q && p == buffer) {
1632             nasm_free(buffer);
1633             return NULL;
1634         }
1635
1636         /*
1637          * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1638          * them are present at the end of the line.
1639          */
1640         buffer[strcspn(buffer, "\r\n\032")] = '\0';
1641
1642         if (!strncmp(buffer, "%line", 5)) {
1643             int32_t ln;
1644             int li;
1645             char *nm = nasm_malloc(strlen(buffer));
1646             if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
1647                 nasm_free(src_set_fname(nm));
1648                 src_set_linnum(ln);
1649                 no_pp_lineinc = li;
1650                 continue;
1651             }
1652             nasm_free(nm);
1653         }
1654         break;
1655     }
1656
1657     no_pp_list->line(LIST_READ, buffer);
1658
1659     return buffer;
1660 }
1661
1662 static void no_pp_cleanup(int pass)
1663 {
1664     (void)pass;                     /* placate GCC */
1665     fclose(no_pp_fp);
1666 }
1667
1668 static uint32_t get_cpu(char *value)
1669 {
1670
1671     if (!strcmp(value, "8086"))
1672         return IF_8086;
1673     if (!strcmp(value, "186"))
1674         return IF_186;
1675     if (!strcmp(value, "286"))
1676         return IF_286;
1677     if (!strcmp(value, "386"))
1678         return IF_386;
1679     if (!strcmp(value, "486"))
1680         return IF_486;
1681     if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
1682         return IF_PENT;
1683     if (!strcmp(value, "686") ||
1684         !nasm_stricmp(value, "ppro") ||
1685         !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
1686         return IF_P6;
1687     if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
1688         return IF_KATMAI;
1689     if (!nasm_stricmp(value, "p4") ||   /* is this right? -- jrc */
1690         !nasm_stricmp(value, "willamette"))
1691         return IF_WILLAMETTE;
1692     if (!nasm_stricmp(value, "prescott"))
1693         return IF_PRESCOTT;
1694     if (!nasm_stricmp(value, "x64") ||
1695         !nasm_stricmp(value, "x86-64"))
1696         return IF_X64;
1697     if (!nasm_stricmp(value, "ia64") ||
1698         !nasm_stricmp(value, "ia-64") ||
1699         !nasm_stricmp(value, "itanium") ||
1700         !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
1701         return IF_IA64;
1702
1703     report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
1704                  "unknown 'cpu' type");
1705
1706     return IF_PLEVEL;           /* the maximum level */
1707 }
1708
1709 static int get_bits(char *value)
1710 {
1711     int i;
1712
1713     if ((i = atoi(value)) == 16)
1714         return i;               /* set for a 16-bit segment */
1715     else if (i == 32) {
1716         if (cpu < IF_386) {
1717             report_error(ERR_NONFATAL,
1718                          "cannot specify 32-bit segment on processor below a 386");
1719             i = 16;
1720         }
1721     } else if (i == 64) {
1722         if (cpu < IF_X64) {
1723             report_error(ERR_NONFATAL,
1724                          "cannot specify 64-bit segment on processor below an x86-64");
1725             i = 16;
1726         }
1727         if (i != maxbits) {
1728             report_error(ERR_NONFATAL,
1729                          "%s output format does not support 64-bit code",
1730                          ofmt->shortname);
1731             i = 16;
1732         }
1733     } else {
1734         report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
1735                      "`%s' is not a valid segment size; must be 16, 32 or 64",
1736                      value);
1737         i = 16;
1738     }
1739     return i;
1740 }
1741
1742 /* end of nasm.c */