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