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