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