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