exec.c

   1 /*
   2  * Copyright (C) 2012
   3  *     Wolfgang Bumiller
   4  *     Dale Weiler
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy of
   7  * this software and associated documentation files (the "Software"), to deal in
   8  * the Software without restriction, including without limitation the rights to
   9  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  10  * of the Software, and to permit persons to whom the Software is furnished to do
  11  * so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in all
  14  * copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  */
  24 #ifndef QCVM_LOOP
  25 #include <errno.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <stdarg.h>
  29
  30 #include "gmqcc.h"
  31
  32 static void loaderror(const char *fmt, ...)
  33 {
  34     int     err = errno;
  35     va_list ap;
  36     va_start(ap, fmt);
  37     vprintf(fmt, ap);
  38     va_end(ap);
  39     printf(": %s\n", strerror(err));
  40 }
  41
  42 static void qcvmerror(qc_program *prog, const char *fmt, ...)
  43 {
  44     va_list ap;
  45
  46     prog->vmerror++;
  47
  48     va_start(ap, fmt);
  49     vprintf(fmt, ap);
  50     va_end(ap);
  51     putchar('\n');
  52 }
  53
  54 qc_program* prog_load(const char *filename)
  55 {
  56     qc_program   *prog;
  57     prog_header   header;
  58     FILE         *file   = file_open(filename, "rb");
  59
  60     if (!file)
  61         return NULL;
  62
  63     if (file_read(&header, sizeof(header), 1, file) != 1) {
  64         loaderror("failed to read header from '%s'", filename);
  65         file_close(file);
  66         return NULL;
  67     }
  68
  69     if (header.version != 6) {
  70         loaderror("header says this is a version %i progs, we need version 6\n", header.version);
  71         file_close(file);
  72         return NULL;
  73     }
  74
  75     prog = (qc_program*)mem_a(sizeof(qc_program));
  76     if (!prog) {
  77         file_close(file);
  78         printf("failed to allocate program data\n");
  79         return NULL;
  80     }
  81     memset(prog, 0, sizeof(*prog));
  82
  83     prog->entityfields = header.entfield;
  84     prog->crc16 = header.crc16;
  85
  86     prog->filename = util_strdup(filename);
  87     if (!prog->filename) {
  88         loaderror("failed to store program name");
  89         goto error;
  90     }
  91
  92 #define read_data(hdrvar, progvar, reserved)                           \
  93     if (file_seek(file, header.hdrvar.offset, SEEK_SET) != 0) {        \
  94         loaderror("seek failed");                                      \
  95         goto error;                                                    \
  96     }                                                                  \
  97     if (file_read (                                                    \
  98             vec_add(prog->progvar, header.hdrvar.length + reserved),   \
  99             sizeof(*prog->progvar),                                    \
 100             header.hdrvar.length,                                      \
 101             file                                                       \
 102         )!= header.hdrvar.length                                       \
 103     ) {                                                                \
 104         loaderror("read failed");                                      \
 105         goto error;                                                    \
 106     }
 107 #define read_data1(x)    read_data(x, x, 0)
 108 #define read_data2(x, y) read_data(x, x, y)
 109
 110     read_data (statements, code, 0);
 111     read_data1(defs);
 112     read_data1(fields);
 113     read_data1(functions);
 114     read_data1(strings);
 115     read_data2(globals, 2); /* reserve more in case a RETURN using with the global at "the end" exists */
 116
 117     file_close(file);
 118
 119     /* profile counters */
 120     memset(vec_add(prog->profile, vec_size(prog->code)), 0, sizeof(prog->profile[0]) * vec_size(prog->code));
 121
 122     /* Add tempstring area */
 123     prog->tempstring_start = vec_size(prog->strings);
 124     prog->tempstring_at    = vec_size(prog->strings);
 125     memset(vec_add(prog->strings, 16*1024), 0, 16*1024);
 126
 127     /* spawn the world entity */
 128     vec_push(prog->entitypool, true);
 129     memset(vec_add(prog->entitydata, prog->entityfields), 0, prog->entityfields * sizeof(prog->entitydata[0]));
 130     prog->entities = 1;
 131
 132     return prog;
 133
 134 error:
 135     if (prog->filename)
 136         mem_d(prog->filename);
 137     vec_free(prog->code);
 138     vec_free(prog->defs);
 139     vec_free(prog->fields);
 140     vec_free(prog->functions);
 141     vec_free(prog->strings);
 142     vec_free(prog->globals);
 143     vec_free(prog->entitydata);
 144     vec_free(prog->entitypool);
 145     mem_d(prog);
 146     return NULL;
 147 }
 148
 149 void prog_delete(qc_program *prog)
 150 {
 151     if (prog->filename) mem_d(prog->filename);
 152     vec_free(prog->code);
 153     vec_free(prog->defs);
 154     vec_free(prog->fields);
 155     vec_free(prog->functions);
 156     vec_free(prog->strings);
 157     vec_free(prog->globals);
 158     vec_free(prog->entitydata);
 159     vec_free(prog->entitypool);
 160     vec_free(prog->localstack);
 161     vec_free(prog->stack);
 162     vec_free(prog->profile);
 163     mem_d(prog);
 164 }
 165
 166 /***********************************************************************
 167  * VM code
 168  */
 169
 170 char* prog_getstring(qc_program *prog, qcint str)
 171 {
 172     /* cast for return required for C++ */
 173     if (str < 0 || str >= (qcint)vec_size(prog->strings))
 174         return (char*)"<<<invalid string>>>";
 175     return prog->strings + str;
 176 }
 177
 178 prog_section_def* prog_entfield(qc_program *prog, qcint off)
 179 {
 180     size_t i;
 181     for (i = 0; i < vec_size(prog->fields); ++i) {
 182         if (prog->fields[i].offset == off)
 183             return (prog->fields + i);
 184     }
 185     return NULL;
 186 }
 187
 188 prog_section_def* prog_getdef(qc_program *prog, qcint off)
 189 {
 190     size_t i;
 191     for (i = 0; i < vec_size(prog->defs); ++i) {
 192         if (prog->defs[i].offset == off)
 193             return (prog->defs + i);
 194     }
 195     return NULL;
 196 }
 197
 198 qcany* prog_getedict(qc_program *prog, qcint e)
 199 {
 200     if (e >= (qcint)vec_size(prog->entitypool)) {
 201         prog->vmerror++;
 202         printf("Accessing out of bounds edict %i\n", (int)e);
 203         e = 0;
 204     }
 205     return (qcany*)(prog->entitydata + (prog->entityfields * e));
 206 }
 207
 208 qcint prog_spawn_entity(qc_program *prog)
 209 {
 210     char  *data;
 211     qcint  e;
 212     for (e = 0; e < (qcint)vec_size(prog->entitypool); ++e) {
 213         if (!prog->entitypool[e]) {
 214             data = (char*)(prog->entitydata + (prog->entityfields * e));
 215             memset(data, 0, prog->entityfields * sizeof(qcint));
 216             return e;
 217         }
 218     }
 219     vec_push(prog->entitypool, true);
 220     prog->entities++;
 221     data = (char*)vec_add(prog->entitydata, prog->entityfields);
 222     memset(data, 0, prog->entityfields * sizeof(qcint));
 223     return e;
 224 }
 225
 226 void prog_free_entity(qc_program *prog, qcint e)
 227 {
 228     if (!e) {
 229         prog->vmerror++;
 230         printf("Trying to free world entity\n");
 231         return;
 232     }
 233     if (e >= (qcint)vec_size(prog->entitypool)) {
 234         prog->vmerror++;
 235         printf("Trying to free out of bounds entity\n");
 236         return;
 237     }
 238     if (!prog->entitypool[e]) {
 239         prog->vmerror++;
 240         printf("Double free on entity\n");
 241         return;
 242     }
 243     prog->entitypool[e] = false;
 244 }
 245
 246 qcint prog_tempstring(qc_program *prog, const char *_str)
 247 {
 248     /* we don't access it, but the macro-generated functions don't use
 249      * const
 250      */
 251     char *str = (char*)_str;
 252
 253     size_t len = strlen(str);
 254     size_t at = prog->tempstring_at;
 255
 256     /* when we reach the end we start over */
 257     if (at + len >= vec_size(prog->strings))
 258         at = prog->tempstring_start;
 259
 260     /* when it doesn't fit, reallocate */
 261     if (at + len >= vec_size(prog->strings))
 262     {
 263         (void)vec_add(prog->strings, len+1);
 264         memcpy(prog->strings + at, str, len+1);
 265         return at;
 266     }
 267
 268     /* when it fits, just copy */
 269     memcpy(prog->strings + at, str, len+1);
 270     prog->tempstring_at += len+1;
 271     return at;
 272 }
 273
 274 static size_t print_escaped_string(const char *str, size_t maxlen)
 275 {
 276     size_t len = 2;
 277     putchar('"');
 278     --maxlen; /* because we're lazy and have escape sequences */
 279     while (*str) {
 280         if (len >= maxlen) {
 281             putchar('.');
 282             putchar('.');
 283             putchar('.');
 284             len += 3;
 285             break;
 286         }
 287         switch (*str) {
 288             case '\a': len += 2; putchar('\\'); putchar('a'); break;
 289             case '\b': len += 2; putchar('\\'); putchar('b'); break;
 290             case '\r': len += 2; putchar('\\'); putchar('r'); break;
 291             case '\n': len += 2; putchar('\\'); putchar('n'); break;
 292             case '\t': len += 2; putchar('\\'); putchar('t'); break;
 293             case '\f': len += 2; putchar('\\'); putchar('f'); break;
 294             case '\v': len += 2; putchar('\\'); putchar('v'); break;
 295             case '\\': len += 2; putchar('\\'); putchar('\\'); break;
 296             case '"':  len += 2; putchar('\\'); putchar('"'); break;
 297             default:
 298                 ++len;
 299                 putchar(*str);
 300                 break;
 301         }
 302         ++str;
 303     }
 304     putchar('"');
 305     return len;
 306 }
 307
 308 static void trace_print_global(qc_program *prog, unsigned int glob, int vtype)
 309 {
 310     static char spaces[28+1] = "                            ";
 311     prog_section_def *def;
 312     qcany    *value;
 313     int       len;
 314
 315     if (!glob) {
 316         len = printf("<null>,");
 317         goto done;
 318     }
 319
 320     def = prog_getdef(prog, glob);
 321     value = (qcany*)(&prog->globals[glob]);
 322
 323     len = printf("[@%u] ", glob);
 324     if (def) {
 325         const char *name = prog_getstring(prog, def->name);
 326         if (name[0] == '#')
 327             len += printf("$");
 328         else
 329             len += printf("%s ", name);
 330         vtype = def->type & DEF_TYPEMASK;
 331     }
 332
 333     switch (vtype) {
 334         case TYPE_VOID:
 335         case TYPE_ENTITY:
 336         case TYPE_FIELD:
 337         case TYPE_FUNCTION:
 338         case TYPE_POINTER:
 339             len += printf("(%i),", value->_int);
 340             break;
 341         case TYPE_VECTOR:
 342             len += printf("'%g %g %g',", value->vector[0],
 343                                          value->vector[1],
 344                                          value->vector[2]);
 345             break;
 346         case TYPE_STRING:
 347             len += print_escaped_string(prog_getstring(prog, value->string), sizeof(spaces)-len-5);
 348             len += printf(",");
 349             /* len += printf("\"%s\",", prog_getstring(prog, value->string)); */
 350             break;
 351         case TYPE_FLOAT:
 352         default:
 353             len += printf("%g,", value->_float);
 354             break;
 355     }
 356 done:
 357     if (len < (int)sizeof(spaces)-1) {
 358         spaces[sizeof(spaces)-1-len] = 0;
 359         printf(spaces);
 360         spaces[sizeof(spaces)-1-len] = ' ';
 361     }
 362 }
 363
 364 static void prog_print_statement(qc_program *prog, prog_section_statement *st)
 365 {
 366     if (st->opcode >= (sizeof(asm_instr)/sizeof(asm_instr[0]))) {
 367         printf("<illegal instruction %d>\n", st->opcode);
 368         return;
 369     }
 370     if ((prog->xflags & VMXF_TRACE) && vec_size(prog->function_stack)) {
 371         size_t i;
 372         for (i = 0; i < vec_size(prog->function_stack); ++i)
 373             printf("->");
 374         printf("%s:", vec_last(prog->function_stack));
 375     }
 376     printf(" <> %-12s", asm_instr[st->opcode].m);
 377     if (st->opcode >= INSTR_IF &&
 378         st->opcode <= INSTR_IFNOT)
 379     {
 380         trace_print_global(prog, st->o1.u1, TYPE_FLOAT);
 381         printf("%d\n", st->o2.s1);
 382     }
 383     else if (st->opcode >= INSTR_CALL0 &&
 384              st->opcode <= INSTR_CALL8)
 385     {
 386         trace_print_global(prog, st->o1.u1, TYPE_FUNCTION);
 387         printf("\n");
 388     }
 389     else if (st->opcode == INSTR_GOTO)
 390     {
 391         printf("%i\n", st->o1.s1);
 392     }
 393     else
 394     {
 395         int t[3] = { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT };
 396         switch (st->opcode)
 397         {
 398             case INSTR_MUL_FV:
 399                 t[1] = t[2] = TYPE_VECTOR;
 400                 break;
 401             case INSTR_MUL_VF:
 402                 t[0] = t[2] = TYPE_VECTOR;
 403                 break;
 404             case INSTR_MUL_V:
 405                 t[0] = t[1] = TYPE_VECTOR;
 406                 break;
 407             case INSTR_ADD_V:
 408             case INSTR_SUB_V:
 409             case INSTR_EQ_V:
 410             case INSTR_NE_V:
 411                 t[0] = t[1] = t[2] = TYPE_VECTOR;
 412                 break;
 413             case INSTR_EQ_S:
 414             case INSTR_NE_S:
 415                 t[0] = t[1] = TYPE_STRING;
 416                 break;
 417             case INSTR_STORE_F:
 418             case INSTR_STOREP_F:
 419                 t[2] = -1;
 420                 break;
 421             case INSTR_STORE_V:
 422                 t[0] = t[1] = TYPE_VECTOR; t[2] = -1;
 423                 break;
 424             case INSTR_STORE_S:
 425                 t[0] = t[1] = TYPE_STRING; t[2] = -1;
 426                 break;
 427             case INSTR_STORE_ENT:
 428                 t[0] = t[1] = TYPE_ENTITY; t[2] = -1;
 429                 break;
 430             case INSTR_STORE_FLD:
 431                 t[0] = t[1] = TYPE_FIELD; t[2] = -1;
 432                 break;
 433             case INSTR_STORE_FNC:
 434                 t[0] = t[1] = TYPE_FUNCTION; t[2] = -1;
 435                 break;
 436             case INSTR_STOREP_V:
 437                 t[0] = TYPE_VECTOR; t[1] = TYPE_ENTITY; t[2] = -1;
 438                 break;
 439             case INSTR_STOREP_S:
 440                 t[0] = TYPE_STRING; t[1] = TYPE_ENTITY; t[2] = -1;
 441                 break;
 442             case INSTR_STOREP_ENT:
 443                 t[0] = TYPE_ENTITY; t[1] = TYPE_ENTITY; t[2] = -1;
 444                 break;
 445             case INSTR_STOREP_FLD:
 446                 t[0] = TYPE_FIELD; t[1] = TYPE_ENTITY; t[2] = -1;
 447                 break;
 448             case INSTR_STOREP_FNC:
 449                 t[0] = TYPE_FUNCTION; t[1] = TYPE_ENTITY; t[2] = -1;
 450                 break;
 451         }
 452         if (t[0] >= 0) trace_print_global(prog, st->o1.u1, t[0]);
 453         else           printf("(none),          ");
 454         if (t[1] >= 0) trace_print_global(prog, st->o2.u1, t[1]);
 455         else           printf("(none),          ");
 456         if (t[2] >= 0) trace_print_global(prog, st->o3.u1, t[2]);
 457         else           printf("(none)");
 458         printf("\n");
 459     }
 460     fflush(stdout);
 461 }
 462
 463 static qcint prog_enterfunction(qc_program *prog, prog_section_function *func)
 464 {
 465     qc_exec_stack st;
 466     size_t  parampos;
 467     int32_t p;
 468
 469     /* back up locals */
 470     st.localsp  = vec_size(prog->localstack);
 471     st.stmt     = prog->statement;
 472     st.function = func;
 473
 474     if (prog->xflags & VMXF_TRACE) {
 475         vec_push(prog->function_stack, prog_getstring(prog, func->name));
 476     }
 477
 478 #ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
 479     if (vec_size(prog->stack))
 480     {
 481         prog_section_function *cur;
 482         cur = prog->stack[vec_size(prog->stack)-1].function;
 483         if (cur)
 484         {
 485             qcint *globals = prog->globals + cur->firstlocal;
 486             vec_append(prog->localstack, cur->locals, globals);
 487         }
 488     }
 489 #else
 490     {
 491         qcint *globals = prog->globals + func->firstlocal;
 492         vec_append(prog->localstack, func->locals, globals);
 493     }
 494 #endif
 495
 496     /* copy parameters */
 497     parampos = func->firstlocal;
 498     for (p = 0; p < func->nargs; ++p)
 499     {
 500         size_t s;
 501         for (s = 0; s < func->argsize[p]; ++s) {
 502             prog->globals[parampos] = prog->globals[OFS_PARM0 + 3*p + s];
 503             ++parampos;
 504         }
 505     }
 506
 507     vec_push(prog->stack, st);
 508
 509     return func->entry;
 510 }
 511
 512 static qcint prog_leavefunction(qc_program *prog)
 513 {
 514     prog_section_function *prev = NULL;
 515     size_t oldsp;
 516
 517     qc_exec_stack st = vec_last(prog->stack);
 518
 519     if (prog->xflags & VMXF_TRACE) {
 520         if (vec_size(prog->function_stack))
 521             vec_pop(prog->function_stack);
 522     }
 523
 524 #ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
 525     if (vec_size(prog->stack) > 1) {
 526         prev  = prog->stack[vec_size(prog->stack)-2].function;
 527         oldsp = prog->stack[vec_size(prog->stack)-2].localsp;
 528     }
 529 #else
 530     prev  = prog->stack[vec_size(prog->stack)-1].function;
 531     oldsp = prog->stack[vec_size(prog->stack)-1].localsp;
 532 #endif
 533     if (prev) {
 534         qcint *globals = prog->globals + prev->firstlocal;
 535         memcpy(globals, prog->localstack + oldsp, prev->locals);
 536         /* vec_remove(prog->localstack, oldsp, vec_size(prog->localstack)-oldsp); */
 537         vec_shrinkto(prog->localstack, oldsp);
 538     }
 539
 540     vec_pop(prog->stack);
 541
 542     return st.stmt - 1; /* offset the ++st */
 543 }
 544
 545 bool prog_exec(qc_program *prog, prog_section_function *func, size_t flags, long maxjumps)
 546 {
 547     long jumpcount = 0;
 548     size_t oldxflags = prog->xflags;
 549     prog_section_statement *st;
 550
 551     prog->vmerror = 0;
 552     prog->xflags = flags;
 553
 554     st = prog->code + prog_enterfunction(prog, func);
 555     --st;
 556     switch (flags)
 557     {
 558         default:
 559         case 0:
 560         {
 561 #define QCVM_LOOP    1
 562 #define QCVM_PROFILE 0
 563 #define QCVM_TRACE   0
 564 #           include __FILE__
 565         }
 566         case (VMXF_TRACE):
 567         {
 568 #define QCVM_PROFILE 0
 569 #define QCVM_TRACE   1
 570 #           include __FILE__
 571         }
 572         case (VMXF_PROFILE):
 573         {
 574 #define QCVM_PROFILE 1
 575 #define QCVM_TRACE   0
 576 #           include __FILE__
 577         }
 578         case (VMXF_TRACE|VMXF_PROFILE):
 579         {
 580 #define QCVM_PROFILE 1
 581 #define QCVM_TRACE   1
 582 #           include __FILE__
 583         }
 584     };
 585
 586 cleanup:
 587     prog->xflags = oldxflags;
 588     vec_free(prog->localstack);
 589     vec_free(prog->stack);
 590     if (prog->vmerror)
 591         return false;
 592     return true;
 593 }
 594
 595 /***********************************************************************
 596  * main for when building the standalone executor
 597  */
 598
 599 #if defined(QCVM_EXECUTOR)
 600 #include <math.h>
 601
 602 opts_cmd_t opts;
 603
 604 const char *type_name[TYPE_COUNT] = {
 605     "void",
 606     "string",
 607     "float",
 608     "vector",
 609     "entity",
 610     "field",
 611     "function",
 612     "pointer",
 613 #if 0
 614     "integer",
 615 #endif
 616     "variant"
 617 };
 618
 619 typedef struct {
 620     int         vtype;
 621     const char *value;
 622 } qcvm_parameter;
 623
 624 qcvm_parameter *main_params = NULL;
 625
 626 #define CheckArgs(num) do {                                                    \
 627     if (prog->argc != (num)) {                                                 \
 628         prog->vmerror++;                                                       \
 629         printf("ERROR: invalid number of arguments for %s: %i, expected %i\n", \
 630         __FUNCTION__, prog->argc, (num));                                      \
 631         return -1;                                                             \
 632     }                                                                          \
 633 } while (0)
 634
 635 #define GetGlobal(idx) ((qcany*)(prog->globals + (idx)))
 636 #define GetArg(num) GetGlobal(OFS_PARM0 + 3*(num))
 637 #define Return(any) *(GetGlobal(OFS_RETURN)) = (any)
 638
 639 static int qc_print(qc_program *prog)
 640 {
 641     size_t i;
 642     const char *laststr = NULL;
 643     for (i = 0; i < (size_t)prog->argc; ++i) {
 644         qcany *str = (qcany*)(prog->globals + OFS_PARM0 + 3*i);
 645         laststr = prog_getstring(prog, str->string);
 646         printf("%s", laststr);
 647     }
 648     if (laststr && (prog->xflags & VMXF_TRACE)) {
 649         size_t len = strlen(laststr);
 650         if (!len || laststr[len-1] != '\n')
 651             printf("\n");
 652     }
 653     return 0;
 654 }
 655
 656 static int qc_error(qc_program *prog)
 657 {
 658     printf("*** VM raised an error:\n");
 659     qc_print(prog);
 660     prog->vmerror++;
 661     return -1;
 662 }
 663
 664 static int qc_ftos(qc_program *prog)
 665 {
 666     char buffer[512];
 667     qcany *num;
 668     qcany str;
 669     CheckArgs(1);
 670     num = GetArg(0);
 671     snprintf(buffer, sizeof(buffer), "%g", num->_float);
 672     str.string = prog_tempstring(prog, buffer);
 673     Return(str);
 674     return 0;
 675 }
 676
 677 static int qc_stof(qc_program *prog)
 678 {
 679     qcany *str;
 680     qcany num;
 681     CheckArgs(1);
 682     str = GetArg(0);
 683     num._float = strtof(prog_getstring(prog, str->string), NULL);
 684     Return(num);
 685     return 0;
 686 }
 687
 688 static int qc_vtos(qc_program *prog)
 689 {
 690     char buffer[512];
 691     qcany *num;
 692     qcany str;
 693     CheckArgs(1);
 694     num = GetArg(0);
 695     snprintf(buffer, sizeof(buffer), "'%g %g %g'", num->vector[0], num->vector[1], num->vector[2]);
 696     str.string = prog_tempstring(prog, buffer);
 697     Return(str);
 698     return 0;
 699 }
 700
 701 static int qc_etos(qc_program *prog)
 702 {
 703     char buffer[512];
 704     qcany *num;
 705     qcany str;
 706     CheckArgs(1);
 707     num = GetArg(0);
 708     snprintf(buffer, sizeof(buffer), "%i", num->_int);
 709     str.string = prog_tempstring(prog, buffer);
 710     Return(str);
 711     return 0;
 712 }
 713
 714 static int qc_spawn(qc_program *prog)
 715 {
 716     qcany ent;
 717     CheckArgs(0);
 718     ent.edict = prog_spawn_entity(prog);
 719     Return(ent);
 720     return (ent.edict ? 0 : -1);
 721 }
 722
 723 static int qc_kill(qc_program *prog)
 724 {
 725     qcany *ent;
 726     CheckArgs(1);
 727     ent = GetArg(0);
 728     prog_free_entity(prog, ent->edict);
 729     return 0;
 730 }
 731
 732 static int qc_vlen(qc_program *prog)
 733 {
 734     qcany *vec, len;
 735     CheckArgs(1);
 736     vec = GetArg(0);
 737     len._float = sqrt(vec->vector[0] * vec->vector[0] +
 738                       vec->vector[1] * vec->vector[1] +
 739                       vec->vector[2] * vec->vector[2]);
 740     Return(len);
 741     return 0;
 742 }
 743
 744 static prog_builtin qc_builtins[] = {
 745     NULL,
 746     &qc_print, /*   1   */
 747     &qc_ftos,  /*   2   */
 748     &qc_spawn, /*   3   */
 749     &qc_kill,  /*   4   */
 750     &qc_vtos,  /*   5   */
 751     &qc_error, /*   6   */
 752     &qc_vlen,  /*   7   */
 753     &qc_etos,  /*   8   */
 754     &qc_stof   /*   9   */
 755 };
 756 static size_t qc_builtins_count = sizeof(qc_builtins) / sizeof(qc_builtins[0]);
 757
 758 static const char *arg0 = NULL;
 759
 760 static void version() {
 761     printf("GMQCC-QCVM %d.%d.%d Built %s %s\n",
 762            GMQCC_VERSION_MAJOR,
 763            GMQCC_VERSION_MINOR,
 764            GMQCC_VERSION_PATCH,
 765            __DATE__,
 766            __TIME__
 767     );
 768 }
 769
 770 static void usage()
 771 {
 772     printf("usage: %s [options] [parameters] file\n", arg0);
 773     printf("options:\n");
 774     printf("  -h, --help    print this message\n"
 775            "  -trace        trace the execution\n"
 776            "  -profile      perform profiling during execution\n"
 777            "  -info         print information from the prog's header\n"
 778            "  -disasm       disassemble and exit\n"
 779            "  -printdefs    list the defs section\n"
 780            "  -printfields  list the field section\n"
 781            "  -printfuns    list functions information\n");
 782     printf("parameters:\n");
 783     printf("  -vector <V>   pass a vector parameter to main()\n"
 784            "  -float  <f>   pass a float parameter to main()\n"
 785            "  -string <s>   pass a string parameter to main() \n");
 786 }
 787
 788 static void prog_main_setparams(qc_program *prog)
 789 {
 790     size_t i;
 791     qcany *arg;
 792
 793     for (i = 0; i < vec_size(main_params); ++i) {
 794         arg = GetGlobal(OFS_PARM0 + 3*i);
 795         arg->vector[0] = 0;
 796         arg->vector[1] = 0;
 797         arg->vector[2] = 0;
 798         switch (main_params[i].vtype) {
 799             case TYPE_VECTOR:
 800 #ifdef _MSC_VER
 801                 (void)sscanf_s(main_params[i].value, " %f %f %f ",
 802                                &arg->vector[0],
 803                                &arg->vector[1],
 804                                &arg->vector[2]);
 805 #else
 806                 (void)sscanf(main_params[i].value, " %f %f %f ",
 807                              &arg->vector[0],
 808                              &arg->vector[1],
 809                              &arg->vector[2]);
 810 #endif
 811                 break;
 812             case TYPE_FLOAT:
 813                 arg->_float = atof(main_params[i].value);
 814                 break;
 815             case TYPE_STRING:
 816                 arg->string = prog_tempstring(prog, main_params[i].value);
 817                 break;
 818             default:
 819                 printf("error: unhandled parameter type: %i\n", main_params[i].vtype);
 820                 break;
 821         }
 822     }
 823 }
 824
 825 void prog_disasm_function(qc_program *prog, size_t id);
 826 int main(int argc, char **argv)
 827 {
 828     size_t      i;
 829     qcint       fnmain = -1;
 830     qc_program *prog;
 831     size_t      xflags = VMXF_DEFAULT;
 832     bool        opts_printfields = false;
 833     bool        opts_printdefs   = false;
 834     bool        opts_printfuns   = false;
 835     bool        opts_disasm      = false;
 836     bool        opts_info        = false;
 837     bool        noexec           = false;
 838     const char *progsfile        = NULL;
 839
 840     arg0 = argv[0];
 841
 842     if (argc < 2) {
 843         usage();
 844         exit(1);
 845     }
 846
 847     while (argc > 1) {
 848         if (!strcmp(argv[1], "-h") ||
 849             !strcmp(argv[1], "-help") ||
 850             !strcmp(argv[1], "--help"))
 851         {
 852             usage();
 853             exit(0);
 854         }
 855         else if (!strcmp(argv[1], "-v") ||
 856                  !strcmp(argv[1], "-version") ||
 857                  !strcmp(argv[1], "--version"))
 858         {
 859             version();
 860             exit(0);
 861         }
 862         else if (!strcmp(argv[1], "-trace")) {
 863             --argc;
 864             ++argv;
 865             xflags |= VMXF_TRACE;
 866         }
 867         else if (!strcmp(argv[1], "-profile")) {
 868             --argc;
 869             ++argv;
 870             xflags |= VMXF_PROFILE;
 871         }
 872         else if (!strcmp(argv[1], "-info")) {
 873             --argc;
 874             ++argv;
 875             opts_info = true;
 876             noexec = true;
 877         }
 878         else if (!strcmp(argv[1], "-disasm")) {
 879             --argc;
 880             ++argv;
 881             opts_disasm = true;
 882             noexec = true;
 883         }
 884         else if (!strcmp(argv[1], "-printdefs")) {
 885             --argc;
 886             ++argv;
 887             opts_printdefs = true;
 888             noexec = true;
 889         }
 890         else if (!strcmp(argv[1], "-printfuns")) {
 891             --argc;
 892             ++argv;
 893             opts_printfuns = true;
 894             noexec = true;
 895         }
 896         else if (!strcmp(argv[1], "-printfields")) {
 897             --argc;
 898             ++argv;
 899             opts_printfields = true;
 900             noexec = true;
 901         }
 902         else if (!strcmp(argv[1], "-vector") ||
 903                  !strcmp(argv[1], "-string") ||
 904                  !strcmp(argv[1], "-float") )
 905         {
 906             qcvm_parameter p;
 907             if (argv[1][1] == 'f')
 908                 p.vtype = TYPE_FLOAT;
 909             else if (argv[1][1] == 's')
 910                 p.vtype = TYPE_STRING;
 911             else if (argv[1][1] == 'v')
 912                 p.vtype = TYPE_VECTOR;
 913
 914             --argc;
 915             ++argv;
 916             if (argc < 3) {
 917                 usage();
 918                 exit(1);
 919             }
 920             p.value = argv[1];
 921
 922             vec_push(main_params, p);
 923             --argc;
 924             ++argv;
 925         }
 926         else if (!strcmp(argv[1], "--")) {
 927             --argc;
 928             ++argv;
 929             break;
 930         }
 931         else if (argv[1][0] != '-') {
 932             if (progsfile) {
 933                 printf("only 1 program file may be specified\n");
 934                 usage();
 935                 exit(1);
 936             }
 937             progsfile = argv[1];
 938             --argc;
 939             ++argv;
 940         }
 941         else
 942         {
 943             usage();
 944             exit(1);
 945         }
 946     }
 947
 948     if (argc > 2) {
 949         usage();
 950         exit(1);
 951     }
 952     if (argc > 1) {
 953         if (progsfile) {
 954             printf("only 1 program file may be specified\n");
 955             usage();
 956             exit(1);
 957         }
 958         progsfile = argv[1];
 959         --argc;
 960         ++argv;
 961     }
 962
 963     if (!progsfile) {
 964         usage();
 965         exit(1);
 966     }
 967
 968     prog = prog_load(progsfile);
 969     if (!prog) {
 970         printf("failed to load program '%s'\n", progsfile);
 971         exit(1);
 972     }
 973
 974     prog->builtins       = qc_builtins;
 975     prog->builtins_count = qc_builtins_count;
 976
 977     if (opts_info) {
 978         printf("Program's system-checksum = 0x%04x\n", (unsigned int)prog->crc16);
 979         printf("Entity field space: %u\n", (unsigned int)prog->entityfields);
 980         printf("Globals: %u\n", (unsigned int)vec_size(prog->globals));
 981         printf("Counts:\n"
 982                "      code: %lu\n"
 983                "      defs: %lu\n"
 984                "    fields: %lu\n"
 985                " functions: %lu\n"
 986                "   strings: %lu\n",
 987                (unsigned long)vec_size(prog->code),
 988                (unsigned long)vec_size(prog->defs),
 989                (unsigned long)vec_size(prog->fields),
 990                (unsigned long)vec_size(prog->functions),
 991                (unsigned long)vec_size(prog->strings));
 992     }
 993
 994     if (opts_info) {
 995         prog_delete(prog);
 996         return 0;
 997     }
 998     if (opts_disasm) {
 999         for (i = 1; i < vec_size(prog->functions); ++i)
1000             prog_disasm_function(prog, i);
1001         return 0;
1002     }
1003     if (opts_printdefs) {
1004         for (i = 0; i < vec_size(prog->defs); ++i) {
1005             printf("Global: %8s %-16s at %u%s\n",
1006                    type_name[prog->defs[i].type & DEF_TYPEMASK],
1007                    prog_getstring(prog, prog->defs[i].name),
1008                    (unsigned int)prog->defs[i].offset,
1009                    ((prog->defs[i].type & DEF_SAVEGLOBAL) ? " [SAVE]" : ""));
1010         }
1011     }
1012     if (opts_printfields) {
1013         for (i = 0; i < vec_size(prog->fields); ++i) {
1014             printf("Field: %8s %-16s at %u%s\n",
1015                    type_name[prog->fields[i].type],
1016                    prog_getstring(prog, prog->fields[i].name),
1017                    (unsigned int)prog->fields[i].offset,
1018                    ((prog->fields[i].type & DEF_SAVEGLOBAL) ? " [SAVE]" : ""));
1019         }
1020     }
1021     if (opts_printfuns) {
1022         for (i = 0; i < vec_size(prog->functions); ++i) {
1023             int32_t a;
1024             printf("Function: %-16s taking %i parameters:(",
1025                    prog_getstring(prog, prog->functions[i].name),
1026                    (unsigned int)prog->functions[i].nargs);
1027             for (a = 0; a < prog->functions[i].nargs; ++a) {
1028                 printf(" %i", prog->functions[i].argsize[a]);
1029             }
1030             printf(") locals: %i + %i\n",
1031                    prog->functions[i].firstlocal,
1032                    prog->functions[i].locals);
1033         }
1034     }
1035     if (!noexec) {
1036         for (i = 1; i < vec_size(prog->functions); ++i) {
1037             const char *name = prog_getstring(prog, prog->functions[i].name);
1038             if (!strcmp(name, "main"))
1039                 fnmain = (qcint)i;
1040         }
1041         if (fnmain > 0)
1042         {
1043             prog_main_setparams(prog);
1044             prog_exec(prog, &prog->functions[fnmain], xflags, VM_JUMPS_DEFAULT);
1045         }
1046         else
1047             printf("No main function found\n");
1048     }
1049
1050     prog_delete(prog);
1051     return 0;
1052 }
1053
1054 void prog_disasm_function(qc_program *prog, size_t id)
1055 {
1056     prog_section_function *fdef = prog->functions + id;
1057     prog_section_statement *st;
1058
1059     if (fdef->entry < 0) {
1060         printf("FUNCTION \"%s\" = builtin #%i\n", prog_getstring(prog, fdef->name), (int)-fdef->entry);
1061         return;
1062     }
1063     else
1064         printf("FUNCTION \"%s\"\n", prog_getstring(prog, fdef->name));
1065
1066     st = prog->code + fdef->entry;
1067     while (st->opcode != INSTR_DONE) {
1068         prog_print_statement(prog, st);
1069         ++st;
1070     }
1071 }
1072 #endif
1073 #else /* !QCVM_LOOP */
1074 /*
1075  * Everything from here on is not including into the compilation of the
1076  * executor.  This is simply code that is #included via #include __FILE__
1077  * see when QCVM_LOOP is defined, the rest of the code above do not get
1078  * re-included.  So this really just acts like one large macro, but it
1079  * sort of isn't, which makes it nicer looking.
1080  */
1081
1082 #define OPA ( (qcany*) (prog->globals + st->o1.u1) )
1083 #define OPB ( (qcany*) (prog->globals + st->o2.u1) )
1084 #define OPC ( (qcany*) (prog->globals + st->o3.u1) )
1085
1086 #define GLOBAL(x) ( (qcany*) (prog->globals + (x)) )
1087
1088 /* to be consistent with current darkplaces behaviour */
1089 #if !defined(FLOAT_IS_TRUE_FOR_INT)
1090 #   define FLOAT_IS_TRUE_FOR_INT(x) ( (x) & 0x7FFFFFFF )
1091 #endif
1092
1093 while (1) {
1094     prog_section_function  *newf;
1095     qcany          *ed;
1096     qcany          *ptr;
1097
1098     ++st;
1099
1100 #if QCVM_PROFILE
1101     prog->profile[st - prog->code]++;
1102 #endif
1103
1104 #if QCVM_TRACE
1105     prog_print_statement(prog, st);
1106 #endif
1107
1108     switch (st->opcode)
1109     {
1110         default:
1111             qcvmerror(prog, "Illegal instruction in %s\n", prog->filename);
1112             goto cleanup;
1113
1114         case INSTR_DONE:
1115         case INSTR_RETURN:
1116             /* TODO: add instruction count to function profile count */
1117             GLOBAL(OFS_RETURN)->ivector[0] = OPA->ivector[0];
1118             GLOBAL(OFS_RETURN)->ivector[1] = OPA->ivector[1];
1119             GLOBAL(OFS_RETURN)->ivector[2] = OPA->ivector[2];
1120
1121             st = prog->code + prog_leavefunction(prog);
1122             if (!vec_size(prog->stack))
1123                 goto cleanup;
1124
1125             break;
1126
1127         case INSTR_MUL_F:
1128             OPC->_float = OPA->_float * OPB->_float;
1129             break;
1130         case INSTR_MUL_V:
1131             OPC->_float = OPA->vector[0]*OPB->vector[0] +
1132                           OPA->vector[1]*OPB->vector[1] +
1133                           OPA->vector[2]*OPB->vector[2];
1134             break;
1135         case INSTR_MUL_FV:
1136             OPC->vector[0] = OPA->_float * OPB->vector[0];
1137             OPC->vector[1] = OPA->_float * OPB->vector[1];
1138             OPC->vector[2] = OPA->_float * OPB->vector[2];
1139             break;
1140         case INSTR_MUL_VF:
1141             OPC->vector[0] = OPB->_float * OPA->vector[0];
1142             OPC->vector[1] = OPB->_float * OPA->vector[1];
1143             OPC->vector[2] = OPB->_float * OPA->vector[2];
1144             break;
1145         case INSTR_DIV_F:
1146             if (OPB->_float != 0.0f)
1147                 OPC->_float = OPA->_float / OPB->_float;
1148             else
1149                 OPC->_float = 0;
1150             break;
1151
1152         case INSTR_ADD_F:
1153             OPC->_float = OPA->_float + OPB->_float;
1154             break;
1155         case INSTR_ADD_V:
1156             OPC->vector[0] = OPA->vector[0] + OPB->vector[0];
1157             OPC->vector[1] = OPA->vector[1] + OPB->vector[1];
1158             OPC->vector[2] = OPA->vector[2] + OPB->vector[2];
1159             break;
1160         case INSTR_SUB_F:
1161             OPC->_float = OPA->_float - OPB->_float;
1162             break;
1163         case INSTR_SUB_V:
1164             OPC->vector[0] = OPA->vector[0] - OPB->vector[0];
1165             OPC->vector[1] = OPA->vector[1] - OPB->vector[1];
1166             OPC->vector[2] = OPA->vector[2] - OPB->vector[2];
1167             break;
1168
1169         case INSTR_EQ_F:
1170             OPC->_float = (OPA->_float == OPB->_float);
1171             break;
1172         case INSTR_EQ_V:
1173             OPC->_float = ((OPA->vector[0] == OPB->vector[0]) &&
1174                            (OPA->vector[1] == OPB->vector[1]) &&
1175                            (OPA->vector[2] == OPB->vector[2]) );
1176             break;
1177         case INSTR_EQ_S:
1178             OPC->_float = !strcmp(prog_getstring(prog, OPA->string),
1179                                   prog_getstring(prog, OPB->string));
1180             break;
1181         case INSTR_EQ_E:
1182             OPC->_float = (OPA->_int == OPB->_int);
1183             break;
1184         case INSTR_EQ_FNC:
1185             OPC->_float = (OPA->function == OPB->function);
1186             break;
1187         case INSTR_NE_F:
1188             OPC->_float = (OPA->_float != OPB->_float);
1189             break;
1190         case INSTR_NE_V:
1191             OPC->_float = ((OPA->vector[0] != OPB->vector[0]) ||
1192                            (OPA->vector[1] != OPB->vector[1]) ||
1193                            (OPA->vector[2] != OPB->vector[2]) );
1194             break;
1195         case INSTR_NE_S:
1196             OPC->_float = !!strcmp(prog_getstring(prog, OPA->string),
1197                                    prog_getstring(prog, OPB->string));
1198             break;
1199         case INSTR_NE_E:
1200             OPC->_float = (OPA->_int != OPB->_int);
1201             break;
1202         case INSTR_NE_FNC:
1203             OPC->_float = (OPA->function != OPB->function);
1204             break;
1205
1206         case INSTR_LE:
1207             OPC->_float = (OPA->_float <= OPB->_float);
1208             break;
1209         case INSTR_GE:
1210             OPC->_float = (OPA->_float >= OPB->_float);
1211             break;
1212         case INSTR_LT:
1213             OPC->_float = (OPA->_float < OPB->_float);
1214             break;
1215         case INSTR_GT:
1216             OPC->_float = (OPA->_float > OPB->_float);
1217             break;
1218
1219         case INSTR_LOAD_F:
1220         case INSTR_LOAD_S:
1221         case INSTR_LOAD_FLD:
1222         case INSTR_LOAD_ENT:
1223         case INSTR_LOAD_FNC:
1224             if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1225                 qcvmerror(prog, "progs `%s` attempted to read an out of bounds entity", prog->filename);
1226                 goto cleanup;
1227             }
1228             if ((unsigned int)(OPB->_int) >= (unsigned int)(prog->entityfields)) {
1229                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1230                           prog->filename,
1231                           OPB->_int);
1232                 goto cleanup;
1233             }
1234             ed = prog_getedict(prog, OPA->edict);
1235             OPC->_int = ((qcany*)( ((qcint*)ed) + OPB->_int ))->_int;
1236             break;
1237         case INSTR_LOAD_V:
1238             if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1239                 qcvmerror(prog, "progs `%s` attempted to read an out of bounds entity", prog->filename);
1240                 goto cleanup;
1241             }
1242             if (OPB->_int < 0 || OPB->_int + 3 > (qcint)prog->entityfields)
1243             {
1244                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1245                           prog->filename,
1246                           OPB->_int + 2);
1247                 goto cleanup;
1248             }
1249             ed = prog_getedict(prog, OPA->edict);
1250             OPC->ivector[0] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[0];
1251             OPC->ivector[1] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[1];
1252             OPC->ivector[2] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[2];
1253             break;
1254
1255         case INSTR_ADDRESS:
1256             if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1257                 qcvmerror(prog, "prog `%s` attempted to address an out of bounds entity %i", prog->filename, OPA->edict);
1258                 goto cleanup;
1259             }
1260             if ((unsigned int)(OPB->_int) >= (unsigned int)(prog->entityfields))
1261             {
1262                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1263                           prog->filename,
1264                           OPB->_int);
1265                 goto cleanup;
1266             }
1267
1268             ed = prog_getedict(prog, OPA->edict);
1269             OPC->_int = ((qcint*)ed) - prog->entitydata + OPB->_int;
1270             break;
1271
1272         case INSTR_STORE_F:
1273         case INSTR_STORE_S:
1274         case INSTR_STORE_ENT:
1275         case INSTR_STORE_FLD:
1276         case INSTR_STORE_FNC:
1277             OPB->_int = OPA->_int;
1278             break;
1279         case INSTR_STORE_V:
1280             OPB->ivector[0] = OPA->ivector[0];
1281             OPB->ivector[1] = OPA->ivector[1];
1282             OPB->ivector[2] = OPA->ivector[2];
1283             break;
1284
1285         case INSTR_STOREP_F:
1286         case INSTR_STOREP_S:
1287         case INSTR_STOREP_ENT:
1288         case INSTR_STOREP_FLD:
1289         case INSTR_STOREP_FNC:
1290             if (OPB->_int < 0 || OPB->_int >= (qcint)vec_size(prog->entitydata)) {
1291                 qcvmerror(prog, "`%s` attempted to write to an out of bounds edict (%i)", prog->filename, OPB->_int);
1292                 goto cleanup;
1293             }
1294             if (OPB->_int < (qcint)prog->entityfields && !prog->allowworldwrites)
1295                 qcvmerror(prog, "`%s` tried to assign to world.%s (field %i)\n",
1296                           prog->filename,
1297                           prog_getstring(prog, prog_entfield(prog, OPB->_int)->name),
1298                           OPB->_int);
1299             ptr = (qcany*)(prog->entitydata + OPB->_int);
1300             ptr->_int = OPA->_int;
1301             break;
1302         case INSTR_STOREP_V:
1303             if (OPB->_int < 0 || OPB->_int + 2 >= (qcint)vec_size(prog->entitydata)) {
1304                 qcvmerror(prog, "`%s` attempted to write to an out of bounds edict (%i)", prog->filename, OPB->_int);
1305                 goto cleanup;
1306             }
1307             if (OPB->_int < (qcint)prog->entityfields && !prog->allowworldwrites)
1308                 qcvmerror(prog, "`%s` tried to assign to world.%s (field %i)\n",
1309                           prog->filename,
1310                           prog_getstring(prog, prog_entfield(prog, OPB->_int)->name),
1311                           OPB->_int);
1312             ptr = (qcany*)(prog->entitydata + OPB->_int);
1313             ptr->ivector[0] = OPA->ivector[0];
1314             ptr->ivector[1] = OPA->ivector[1];
1315             ptr->ivector[2] = OPA->ivector[2];
1316             break;
1317
1318         case INSTR_NOT_F:
1319             OPC->_float = !FLOAT_IS_TRUE_FOR_INT(OPA->_int);
1320             break;
1321         case INSTR_NOT_V:
1322             OPC->_float = !OPA->vector[0] &&
1323                           !OPA->vector[1] &&
1324                           !OPA->vector[2];
1325             break;
1326         case INSTR_NOT_S:
1327             OPC->_float = !OPA->string ||
1328                           !*prog_getstring(prog, OPA->string);
1329             break;
1330         case INSTR_NOT_ENT:
1331             OPC->_float = (OPA->edict == 0);
1332             break;
1333         case INSTR_NOT_FNC:
1334             OPC->_float = !OPA->function;
1335             break;
1336
1337         case INSTR_IF:
1338             /* this is consistent with darkplaces' behaviour */
1339             if(FLOAT_IS_TRUE_FOR_INT(OPA->_int))
1340             {
1341                 st += st->o2.s1 - 1;    /* offset the s++ */
1342                 if (++jumpcount >= maxjumps)
1343                     qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1344             }
1345             break;
1346         case INSTR_IFNOT:
1347             if(!FLOAT_IS_TRUE_FOR_INT(OPA->_int))
1348             {
1349                 st += st->o2.s1 - 1;    /* offset the s++ */
1350                 if (++jumpcount >= maxjumps)
1351                     qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1352             }
1353             break;
1354
1355         case INSTR_CALL0:
1356         case INSTR_CALL1:
1357         case INSTR_CALL2:
1358         case INSTR_CALL3:
1359         case INSTR_CALL4:
1360         case INSTR_CALL5:
1361         case INSTR_CALL6:
1362         case INSTR_CALL7:
1363         case INSTR_CALL8:
1364             prog->argc = st->opcode - INSTR_CALL0;
1365             if (!OPA->function)
1366                 qcvmerror(prog, "NULL function in `%s`", prog->filename);
1367
1368             if(!OPA->function || OPA->function >= (qcint)vec_size(prog->functions))
1369             {
1370                 qcvmerror(prog, "CALL outside the program in `%s`", prog->filename);
1371                 goto cleanup;
1372             }
1373
1374             newf = &prog->functions[OPA->function];
1375             newf->profile++;
1376
1377             prog->statement = (st - prog->code) + 1;
1378
1379             if (newf->entry < 0)
1380             {
1381                 /* negative statements are built in functions */
1382                 qcint builtinnumber = -newf->entry;
1383                 if (builtinnumber < (qcint)prog->builtins_count && prog->builtins[builtinnumber])
1384                     prog->builtins[builtinnumber](prog);
1385                 else
1386                     qcvmerror(prog, "No such builtin #%i in %s! Try updating your gmqcc sources",
1387                               builtinnumber, prog->filename);
1388             }
1389             else
1390                 st = prog->code + prog_enterfunction(prog, newf) - 1; /* offset st++ */
1391             if (prog->vmerror)
1392                 goto cleanup;
1393             break;
1394
1395         case INSTR_STATE:
1396             qcvmerror(prog, "`%s` tried to execute a STATE operation", prog->filename);
1397             break;
1398
1399         case INSTR_GOTO:
1400             st += st->o1.s1 - 1;    /* offset the s++ */
1401             if (++jumpcount == 10000000)
1402                 qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1403             break;
1404
1405         case INSTR_AND:
1406             OPC->_float = FLOAT_IS_TRUE_FOR_INT(OPA->_int) &&
1407                           FLOAT_IS_TRUE_FOR_INT(OPB->_int);
1408             break;
1409         case INSTR_OR:
1410             OPC->_float = FLOAT_IS_TRUE_FOR_INT(OPA->_int) ||
1411                           FLOAT_IS_TRUE_FOR_INT(OPB->_int);
1412             break;
1413
1414         case INSTR_BITAND:
1415             OPC->_float = ((int)OPA->_float) & ((int)OPB->_float);
1416             break;
1417         case INSTR_BITOR:
1418             OPC->_float = ((int)OPA->_float) | ((int)OPB->_float);
1419             break;
1420     }
1421 }
1422
1423 #undef QCVM_PROFILE
1424 #undef QCVM_TRACE
1425 #endif /* !QCVM_LOOP */