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