exec.c

   1 /*
   2  * Copyright (C) 2012
   3  *     Wolfgang Bumiller
   4  *     Dale Weiler
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy of
   7  * this software and associated documentation files (the "Software"), to deal in
   8  * the Software without restriction, including without limitation the rights to
   9  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  10  * of the Software, and to permit persons to whom the Software is furnished to do
  11  * so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in all
  14  * copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  */
  24 #ifndef QCVM_LOOP
  25 #include <errno.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <stdarg.h>
  29
  30 #include "gmqcc.h"
  31
  32 static void loaderror(const char *fmt, ...)
  33 {
  34     int     err = errno;
  35     va_list ap;
  36     va_start(ap, fmt);
  37     vprintf(fmt, ap);
  38     va_end(ap);
  39     printf(": %s\n", strerror(err));
  40 }
  41
  42 static void qcvmerror(qc_program *prog, const char *fmt, ...)
  43 {
  44     va_list ap;
  45
  46     prog->vmerror++;
  47
  48     va_start(ap, fmt);
  49     vprintf(fmt, ap);
  50     va_end(ap);
  51     putchar('\n');
  52 }
  53
  54 qc_program* prog_load(const char *filename)
  55 {
  56     qc_program   *prog;
  57     prog_header   header;
  58     FILE         *file   = file_open(filename, "rb");
  59
  60     if (!file)
  61         return NULL;
  62
  63     if (file_read(&header, sizeof(header), 1, file) != 1) {
  64         loaderror("failed to read header from '%s'", filename);
  65         file_close(file);
  66         return NULL;
  67     }
  68
  69     if (header.version != 6) {
  70         loaderror("header says this is a version %i progs, we need version 6\n", header.version);
  71         file_close(file);
  72         return NULL;
  73     }
  74
  75     prog = (qc_program*)mem_a(sizeof(qc_program));
  76     if (!prog) {
  77         file_close(file);
  78         printf("failed to allocate program data\n");
  79         return NULL;
  80     }
  81     memset(prog, 0, sizeof(*prog));
  82
  83     prog->entityfields = header.entfield;
  84     prog->crc16 = header.crc16;
  85
  86     prog->filename = util_strdup(filename);
  87     if (!prog->filename) {
  88         loaderror("failed to store program name");
  89         goto error;
  90     }
  91
  92 #define read_data(hdrvar, progvar, reserved)                           \
  93     if (file_seek(file, header.hdrvar.offset, SEEK_SET) != 0) {        \
  94         loaderror("seek failed");                                      \
  95         goto error;                                                    \
  96     }                                                                  \
  97     if (file_read (                                                    \
  98             vec_add(prog->progvar, header.hdrvar.length + reserved),   \
  99             sizeof(*prog->progvar),                                    \
 100             header.hdrvar.length,                                      \
 101             file                                                       \
 102         )!= header.hdrvar.length                                       \
 103     ) {                                                                \
 104         loaderror("read failed");                                      \
 105         goto error;                                                    \
 106     }
 107 #define read_data1(x)    read_data(x, x, 0)
 108 #define read_data2(x, y) read_data(x, x, y)
 109
 110     read_data (statements, code, 0);
 111     read_data1(defs);
 112     read_data1(fields);
 113     read_data1(functions);
 114     read_data1(strings);
 115     read_data2(globals, 2); /* reserve more in case a RETURN using with the global at "the end" exists */
 116
 117     file_close(file);
 118
 119     /* profile counters */
 120     memset(vec_add(prog->profile, vec_size(prog->code)), 0, sizeof(prog->profile[0]) * vec_size(prog->code));
 121
 122     /* Add tempstring area */
 123     prog->tempstring_start = vec_size(prog->strings);
 124     prog->tempstring_at    = vec_size(prog->strings);
 125     memset(vec_add(prog->strings, 16*1024), 0, 16*1024);
 126
 127     /* spawn the world entity */
 128     vec_push(prog->entitypool, true);
 129     memset(vec_add(prog->entitydata, prog->entityfields), 0, prog->entityfields * sizeof(prog->entitydata[0]));
 130     prog->entities = 1;
 131
 132     return prog;
 133
 134 error:
 135     if (prog->filename)
 136         mem_d(prog->filename);
 137     vec_free(prog->code);
 138     vec_free(prog->defs);
 139     vec_free(prog->fields);
 140     vec_free(prog->functions);
 141     vec_free(prog->strings);
 142     vec_free(prog->globals);
 143     vec_free(prog->entitydata);
 144     vec_free(prog->entitypool);
 145     mem_d(prog);
 146     return NULL;
 147 }
 148
 149 void prog_delete(qc_program *prog)
 150 {
 151     if (prog->filename) mem_d(prog->filename);
 152     vec_free(prog->code);
 153     vec_free(prog->defs);
 154     vec_free(prog->fields);
 155     vec_free(prog->functions);
 156     vec_free(prog->strings);
 157     vec_free(prog->globals);
 158     vec_free(prog->entitydata);
 159     vec_free(prog->entitypool);
 160     vec_free(prog->localstack);
 161     vec_free(prog->stack);
 162     vec_free(prog->profile);
 163     mem_d(prog);
 164 }
 165
 166 /***********************************************************************
 167  * VM code
 168  */
 169
 170 char* prog_getstring(qc_program *prog, qcint str)
 171 {
 172     /* cast for return required for C++ */
 173     if (str < 0 || str >= (qcint)vec_size(prog->strings))
 174         return (char*)"<<<invalid string>>>";
 175     return prog->strings + str;
 176 }
 177
 178 prog_section_def* prog_entfield(qc_program *prog, qcint off)
 179 {
 180     size_t i;
 181     for (i = 0; i < vec_size(prog->fields); ++i) {
 182         if (prog->fields[i].offset == off)
 183             return (prog->fields + i);
 184     }
 185     return NULL;
 186 }
 187
 188 prog_section_def* prog_getdef(qc_program *prog, qcint off)
 189 {
 190     size_t i;
 191     for (i = 0; i < vec_size(prog->defs); ++i) {
 192         if (prog->defs[i].offset == off)
 193             return (prog->defs + i);
 194     }
 195     return NULL;
 196 }
 197
 198 qcany* prog_getedict(qc_program *prog, qcint e)
 199 {
 200     if (e >= (qcint)vec_size(prog->entitypool)) {
 201         prog->vmerror++;
 202         printf("Accessing out of bounds edict %i\n", (int)e);
 203         e = 0;
 204     }
 205     return (qcany*)(prog->entitydata + (prog->entityfields * e));
 206 }
 207
 208 qcint prog_spawn_entity(qc_program *prog)
 209 {
 210     char  *data;
 211     qcint  e;
 212     for (e = 0; e < (qcint)vec_size(prog->entitypool); ++e) {
 213         if (!prog->entitypool[e]) {
 214             data = (char*)(prog->entitydata + (prog->entityfields * e));
 215             memset(data, 0, prog->entityfields * sizeof(qcint));
 216             return e;
 217         }
 218     }
 219     vec_push(prog->entitypool, true);
 220     prog->entities++;
 221     data = (char*)vec_add(prog->entitydata, prog->entityfields);
 222     memset(data, 0, prog->entityfields * sizeof(qcint));
 223     return e;
 224 }
 225
 226 void prog_free_entity(qc_program *prog, qcint e)
 227 {
 228     if (!e) {
 229         prog->vmerror++;
 230         printf("Trying to free world entity\n");
 231         return;
 232     }
 233     if (e >= (qcint)vec_size(prog->entitypool)) {
 234         prog->vmerror++;
 235         printf("Trying to free out of bounds entity\n");
 236         return;
 237     }
 238     if (!prog->entitypool[e]) {
 239         prog->vmerror++;
 240         printf("Double free on entity\n");
 241         return;
 242     }
 243     prog->entitypool[e] = false;
 244 }
 245
 246 qcint prog_tempstring(qc_program *prog, const char *_str)
 247 {
 248     /* we don't access it, but the macro-generated functions don't use
 249      * const
 250      */
 251     char *str = (char*)_str;
 252
 253     size_t len = strlen(str);
 254     size_t at = prog->tempstring_at;
 255
 256     /* when we reach the end we start over */
 257     if (at + len >= vec_size(prog->strings))
 258         at = prog->tempstring_start;
 259
 260     /* when it doesn't fit, reallocate */
 261     if (at + len >= vec_size(prog->strings))
 262     {
 263         (void)vec_add(prog->strings, len+1);
 264         memcpy(prog->strings + at, str, len+1);
 265         return at;
 266     }
 267
 268     /* when it fits, just copy */
 269     memcpy(prog->strings + at, str, len+1);
 270     prog->tempstring_at += len+1;
 271     return at;
 272 }
 273
 274 static size_t print_escaped_string(const char *str, size_t maxlen)
 275 {
 276     size_t len = 2;
 277     putchar('"');
 278     --maxlen; /* because we're lazy and have escape sequences */
 279     while (*str) {
 280         if (len >= maxlen) {
 281             putchar('.');
 282             putchar('.');
 283             putchar('.');
 284             len += 3;
 285             break;
 286         }
 287         switch (*str) {
 288             case '\a': len += 2; putchar('\\'); putchar('a'); break;
 289             case '\b': len += 2; putchar('\\'); putchar('b'); break;
 290             case '\r': len += 2; putchar('\\'); putchar('r'); break;
 291             case '\n': len += 2; putchar('\\'); putchar('n'); break;
 292             case '\t': len += 2; putchar('\\'); putchar('t'); break;
 293             case '\f': len += 2; putchar('\\'); putchar('f'); break;
 294             case '\v': len += 2; putchar('\\'); putchar('v'); break;
 295             case '\\': len += 2; putchar('\\'); putchar('\\'); break;
 296             case '"':  len += 2; putchar('\\'); putchar('"'); break;
 297             default:
 298                 ++len;
 299                 putchar(*str);
 300                 break;
 301         }
 302         ++str;
 303     }
 304     putchar('"');
 305     return len;
 306 }
 307
 308 static void trace_print_global(qc_program *prog, unsigned int glob, int vtype)
 309 {
 310     static char spaces[28+1] = "                            ";
 311     prog_section_def *def;
 312     qcany    *value;
 313     int       len;
 314
 315     if (!glob) {
 316         len = printf("<null>,");
 317         goto done;
 318     }
 319
 320     def = prog_getdef(prog, glob);
 321     value = (qcany*)(&prog->globals[glob]);
 322
 323     len = printf("[@%u] ", glob);
 324     if (def) {
 325         const char *name = prog_getstring(prog, def->name);
 326         if (name[0] == '#')
 327             len += printf("$");
 328         else
 329             len += printf("%s ", name);
 330         vtype = def->type & DEF_TYPEMASK;
 331     }
 332
 333     switch (vtype) {
 334         case TYPE_VOID:
 335         case TYPE_ENTITY:
 336         case TYPE_FIELD:
 337         case TYPE_FUNCTION:
 338         case TYPE_POINTER:
 339             len += printf("(%i),", value->_int);
 340             break;
 341         case TYPE_VECTOR:
 342             len += printf("'%g %g %g',", value->vector[0],
 343                                          value->vector[1],
 344                                          value->vector[2]);
 345             break;
 346         case TYPE_STRING:
 347             if (value->string)
 348                 len += print_escaped_string(prog_getstring(prog, value->string), sizeof(spaces)-len-5);
 349             else
 350                 len += printf("(null)");
 351             len += printf(",");
 352             /* len += printf("\"%s\",", prog_getstring(prog, value->string)); */
 353             break;
 354         case TYPE_FLOAT:
 355         default:
 356             len += printf("%g,", value->_float);
 357             break;
 358     }
 359 done:
 360     if (len < (int)sizeof(spaces)-1) {
 361         spaces[sizeof(spaces)-1-len] = 0;
 362         printf(spaces);
 363         spaces[sizeof(spaces)-1-len] = ' ';
 364     }
 365 }
 366
 367 static void prog_print_statement(qc_program *prog, prog_section_statement *st)
 368 {
 369     if (st->opcode >= (sizeof(asm_instr)/sizeof(asm_instr[0]))) {
 370         printf("<illegal instruction %d>\n", st->opcode);
 371         return;
 372     }
 373     if ((prog->xflags & VMXF_TRACE) && vec_size(prog->function_stack)) {
 374         size_t i;
 375         for (i = 0; i < vec_size(prog->function_stack); ++i)
 376             printf("->");
 377         printf("%s:", vec_last(prog->function_stack));
 378     }
 379     printf(" <> %-12s", asm_instr[st->opcode].m);
 380     if (st->opcode >= INSTR_IF &&
 381         st->opcode <= INSTR_IFNOT)
 382     {
 383         trace_print_global(prog, st->o1.u1, TYPE_FLOAT);
 384         printf("%d\n", st->o2.s1);
 385     }
 386     else if (st->opcode >= INSTR_CALL0 &&
 387              st->opcode <= INSTR_CALL8)
 388     {
 389         trace_print_global(prog, st->o1.u1, TYPE_FUNCTION);
 390         printf("\n");
 391     }
 392     else if (st->opcode == INSTR_GOTO)
 393     {
 394         printf("%i\n", st->o1.s1);
 395     }
 396     else
 397     {
 398         int t[3] = { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT };
 399         switch (st->opcode)
 400         {
 401             case INSTR_MUL_FV:
 402                 t[1] = t[2] = TYPE_VECTOR;
 403                 break;
 404             case INSTR_MUL_VF:
 405                 t[0] = t[2] = TYPE_VECTOR;
 406                 break;
 407             case INSTR_MUL_V:
 408                 t[0] = t[1] = TYPE_VECTOR;
 409                 break;
 410             case INSTR_ADD_V:
 411             case INSTR_SUB_V:
 412             case INSTR_EQ_V:
 413             case INSTR_NE_V:
 414                 t[0] = t[1] = t[2] = TYPE_VECTOR;
 415                 break;
 416             case INSTR_EQ_S:
 417             case INSTR_NE_S:
 418                 t[0] = t[1] = TYPE_STRING;
 419                 break;
 420             case INSTR_STORE_F:
 421             case INSTR_STOREP_F:
 422                 t[2] = -1;
 423                 break;
 424             case INSTR_STORE_V:
 425                 t[0] = t[1] = TYPE_VECTOR; t[2] = -1;
 426                 break;
 427             case INSTR_STORE_S:
 428                 t[0] = t[1] = TYPE_STRING; t[2] = -1;
 429                 break;
 430             case INSTR_STORE_ENT:
 431                 t[0] = t[1] = TYPE_ENTITY; t[2] = -1;
 432                 break;
 433             case INSTR_STORE_FLD:
 434                 t[0] = t[1] = TYPE_FIELD; t[2] = -1;
 435                 break;
 436             case INSTR_STORE_FNC:
 437                 t[0] = t[1] = TYPE_FUNCTION; t[2] = -1;
 438                 break;
 439             case INSTR_STOREP_V:
 440                 t[0] = TYPE_VECTOR; t[1] = TYPE_ENTITY; t[2] = -1;
 441                 break;
 442             case INSTR_STOREP_S:
 443                 t[0] = TYPE_STRING; t[1] = TYPE_ENTITY; t[2] = -1;
 444                 break;
 445             case INSTR_STOREP_ENT:
 446                 t[0] = TYPE_ENTITY; t[1] = TYPE_ENTITY; t[2] = -1;
 447                 break;
 448             case INSTR_STOREP_FLD:
 449                 t[0] = TYPE_FIELD; t[1] = TYPE_ENTITY; t[2] = -1;
 450                 break;
 451             case INSTR_STOREP_FNC:
 452                 t[0] = TYPE_FUNCTION; t[1] = TYPE_ENTITY; t[2] = -1;
 453                 break;
 454         }
 455         if (t[0] >= 0) trace_print_global(prog, st->o1.u1, t[0]);
 456         else           printf("(none),          ");
 457         if (t[1] >= 0) trace_print_global(prog, st->o2.u1, t[1]);
 458         else           printf("(none),          ");
 459         if (t[2] >= 0) trace_print_global(prog, st->o3.u1, t[2]);
 460         else           printf("(none)");
 461         printf("\n");
 462     }
 463     fflush(stdout);
 464 }
 465
 466 static qcint prog_enterfunction(qc_program *prog, prog_section_function *func)
 467 {
 468     qc_exec_stack st;
 469     size_t  parampos;
 470     int32_t p;
 471
 472     /* back up locals */
 473     st.localsp  = vec_size(prog->localstack);
 474     st.stmt     = prog->statement;
 475     st.function = func;
 476
 477     if (prog->xflags & VMXF_TRACE) {
 478         vec_push(prog->function_stack, prog_getstring(prog, func->name));
 479     }
 480
 481 #ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
 482     if (vec_size(prog->stack))
 483     {
 484         prog_section_function *cur;
 485         cur = prog->stack[vec_size(prog->stack)-1].function;
 486         if (cur)
 487         {
 488             qcint *globals = prog->globals + cur->firstlocal;
 489             vec_append(prog->localstack, cur->locals, globals);
 490         }
 491     }
 492 #else
 493     {
 494         qcint *globals = prog->globals + func->firstlocal;
 495         vec_append(prog->localstack, func->locals, globals);
 496     }
 497 #endif
 498
 499     /* copy parameters */
 500     parampos = func->firstlocal;
 501     for (p = 0; p < func->nargs; ++p)
 502     {
 503         size_t s;
 504         for (s = 0; s < func->argsize[p]; ++s) {
 505             prog->globals[parampos] = prog->globals[OFS_PARM0 + 3*p + s];
 506             ++parampos;
 507         }
 508     }
 509
 510     vec_push(prog->stack, st);
 511
 512     return func->entry;
 513 }
 514
 515 static qcint prog_leavefunction(qc_program *prog)
 516 {
 517     prog_section_function *prev = NULL;
 518     size_t oldsp;
 519
 520     qc_exec_stack st = vec_last(prog->stack);
 521
 522     if (prog->xflags & VMXF_TRACE) {
 523         if (vec_size(prog->function_stack))
 524             vec_pop(prog->function_stack);
 525     }
 526
 527 #ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
 528     if (vec_size(prog->stack) > 1) {
 529         prev  = prog->stack[vec_size(prog->stack)-2].function;
 530         oldsp = prog->stack[vec_size(prog->stack)-2].localsp;
 531     }
 532 #else
 533     prev  = prog->stack[vec_size(prog->stack)-1].function;
 534     oldsp = prog->stack[vec_size(prog->stack)-1].localsp;
 535 #endif
 536     if (prev) {
 537         qcint *globals = prog->globals + prev->firstlocal;
 538         memcpy(globals, prog->localstack + oldsp, prev->locals * sizeof(prog->localstack[0]));
 539         /* vec_remove(prog->localstack, oldsp, vec_size(prog->localstack)-oldsp); */
 540         vec_shrinkto(prog->localstack, oldsp);
 541     }
 542
 543     vec_pop(prog->stack);
 544
 545     return st.stmt - 1; /* offset the ++st */
 546 }
 547
 548 bool prog_exec(qc_program *prog, prog_section_function *func, size_t flags, long maxjumps)
 549 {
 550     long jumpcount = 0;
 551     size_t oldxflags = prog->xflags;
 552     prog_section_statement *st;
 553
 554     prog->vmerror = 0;
 555     prog->xflags = flags;
 556
 557     st = prog->code + prog_enterfunction(prog, func);
 558     --st;
 559     switch (flags)
 560     {
 561         default:
 562         case 0:
 563         {
 564 #define QCVM_LOOP    1
 565 #define QCVM_PROFILE 0
 566 #define QCVM_TRACE   0
 567 #           include __FILE__
 568         }
 569         case (VMXF_TRACE):
 570         {
 571 #define QCVM_PROFILE 0
 572 #define QCVM_TRACE   1
 573 #           include __FILE__
 574         }
 575         case (VMXF_PROFILE):
 576         {
 577 #define QCVM_PROFILE 1
 578 #define QCVM_TRACE   0
 579 #           include __FILE__
 580         }
 581         case (VMXF_TRACE|VMXF_PROFILE):
 582         {
 583 #define QCVM_PROFILE 1
 584 #define QCVM_TRACE   1
 585 #           include __FILE__
 586         }
 587     };
 588
 589 cleanup:
 590     prog->xflags = oldxflags;
 591     vec_free(prog->localstack);
 592     vec_free(prog->stack);
 593     if (prog->vmerror)
 594         return false;
 595     return true;
 596 }
 597
 598 /***********************************************************************
 599  * main for when building the standalone executor
 600  */
 601
 602 #if defined(QCVM_EXECUTOR)
 603 #include <math.h>
 604
 605 opts_cmd_t opts;
 606
 607 const char *type_name[TYPE_COUNT] = {
 608     "void",
 609     "string",
 610     "float",
 611     "vector",
 612     "entity",
 613     "field",
 614     "function",
 615     "pointer",
 616 #if 0
 617     "integer",
 618 #endif
 619     "variant"
 620 };
 621
 622 typedef struct {
 623     int         vtype;
 624     const char *value;
 625 } qcvm_parameter;
 626
 627 qcvm_parameter *main_params = NULL;
 628
 629 #define CheckArgs(num) do {                                                    \
 630     if (prog->argc != (num)) {                                                 \
 631         prog->vmerror++;                                                       \
 632         printf("ERROR: invalid number of arguments for %s: %i, expected %i\n", \
 633         __FUNCTION__, prog->argc, (num));                                      \
 634         return -1;                                                             \
 635     }                                                                          \
 636 } while (0)
 637
 638 #define GetGlobal(idx) ((qcany*)(prog->globals + (idx)))
 639 #define GetArg(num) GetGlobal(OFS_PARM0 + 3*(num))
 640 #define Return(any) *(GetGlobal(OFS_RETURN)) = (any)
 641
 642 static int qc_print(qc_program *prog)
 643 {
 644     size_t i;
 645     const char *laststr = NULL;
 646     for (i = 0; i < (size_t)prog->argc; ++i) {
 647         qcany *str = (qcany*)(prog->globals + OFS_PARM0 + 3*i);
 648         laststr = prog_getstring(prog, str->string);
 649         printf("%s", laststr);
 650     }
 651     if (laststr && (prog->xflags & VMXF_TRACE)) {
 652         size_t len = strlen(laststr);
 653         if (!len || laststr[len-1] != '\n')
 654             printf("\n");
 655     }
 656     return 0;
 657 }
 658
 659 static int qc_error(qc_program *prog)
 660 {
 661     printf("*** VM raised an error:\n");
 662     qc_print(prog);
 663     prog->vmerror++;
 664     return -1;
 665 }
 666
 667 static int qc_ftos(qc_program *prog)
 668 {
 669     char buffer[512];
 670     qcany *num;
 671     qcany str;
 672     CheckArgs(1);
 673     num = GetArg(0);
 674     snprintf(buffer, sizeof(buffer), "%g", num->_float);
 675     str.string = prog_tempstring(prog, buffer);
 676     Return(str);
 677     return 0;
 678 }
 679
 680 static int qc_stof(qc_program *prog)
 681 {
 682     qcany *str;
 683     qcany num;
 684     CheckArgs(1);
 685     str = GetArg(0);
 686     num._float = strtof(prog_getstring(prog, str->string), NULL);
 687     Return(num);
 688     return 0;
 689 }
 690
 691 static int qc_vtos(qc_program *prog)
 692 {
 693     char buffer[512];
 694     qcany *num;
 695     qcany str;
 696     CheckArgs(1);
 697     num = GetArg(0);
 698     snprintf(buffer, sizeof(buffer), "'%g %g %g'", num->vector[0], num->vector[1], num->vector[2]);
 699     str.string = prog_tempstring(prog, buffer);
 700     Return(str);
 701     return 0;
 702 }
 703
 704 static int qc_etos(qc_program *prog)
 705 {
 706     char buffer[512];
 707     qcany *num;
 708     qcany str;
 709     CheckArgs(1);
 710     num = GetArg(0);
 711     snprintf(buffer, sizeof(buffer), "%i", num->_int);
 712     str.string = prog_tempstring(prog, buffer);
 713     Return(str);
 714     return 0;
 715 }
 716
 717 static int qc_spawn(qc_program *prog)
 718 {
 719     qcany ent;
 720     CheckArgs(0);
 721     ent.edict = prog_spawn_entity(prog);
 722     Return(ent);
 723     return (ent.edict ? 0 : -1);
 724 }
 725
 726 static int qc_kill(qc_program *prog)
 727 {
 728     qcany *ent;
 729     CheckArgs(1);
 730     ent = GetArg(0);
 731     prog_free_entity(prog, ent->edict);
 732     return 0;
 733 }
 734
 735 static int qc_vlen(qc_program *prog)
 736 {
 737     qcany *vec, len;
 738     CheckArgs(1);
 739     vec = GetArg(0);
 740     len._float = sqrt(vec->vector[0] * vec->vector[0] +
 741                       vec->vector[1] * vec->vector[1] +
 742                       vec->vector[2] * vec->vector[2]);
 743     Return(len);
 744     return 0;
 745 }
 746
 747 static int qc_strcat(qc_program *prog)
 748 {
 749     char  *buffer;
 750     size_t len1,   len2;
 751     char  *cstr1, *cstr2;
 752     qcany *str1,  *str2;
 753     qcany  out;
 754
 755     CheckArgs(2);
 756     str1 = GetArg(0);
 757     str2 = GetArg(1);
 758     cstr1 = prog_getstring(prog, str1->string);
 759     cstr2 = prog_getstring(prog, str2->string);
 760     len1 = strlen(cstr1);
 761     len2 = strlen(cstr2);
 762     buffer = (char*)mem_a(len1 + len2 + 1);
 763     memcpy(buffer, cstr1, len1);
 764     memcpy(buffer+len1, cstr2, len2+1);
 765     out.string = prog_tempstring(prog, buffer);
 766     mem_d(buffer);
 767     Return(out);
 768     return 0;
 769 }
 770
 771 static prog_builtin qc_builtins[] = {
 772     NULL,
 773     &qc_print, /*   1   */
 774     &qc_ftos,  /*   2   */
 775     &qc_spawn, /*   3   */
 776     &qc_kill,  /*   4   */
 777     &qc_vtos,  /*   5   */
 778     &qc_error, /*   6   */
 779     &qc_vlen,  /*   7   */
 780     &qc_etos,  /*   8   */
 781     &qc_stof,  /*   9   */
 782     &qc_strcat /*   10  */
 783 };
 784 static size_t qc_builtins_count = sizeof(qc_builtins) / sizeof(qc_builtins[0]);
 785
 786 static const char *arg0 = NULL;
 787
 788 static void version() {
 789     printf("GMQCC-QCVM %d.%d.%d Built %s %s\n",
 790            GMQCC_VERSION_MAJOR,
 791            GMQCC_VERSION_MINOR,
 792            GMQCC_VERSION_PATCH,
 793            __DATE__,
 794            __TIME__
 795     );
 796 }
 797
 798 static void usage()
 799 {
 800     printf("usage: %s [options] [parameters] file\n", arg0);
 801     printf("options:\n");
 802     printf("  -h, --help    print this message\n"
 803            "  -trace        trace the execution\n"
 804            "  -profile      perform profiling during execution\n"
 805            "  -info         print information from the prog's header\n"
 806            "  -disasm       disassemble and exit\n"
 807            "  -printdefs    list the defs section\n"
 808            "  -printfields  list the field section\n"
 809            "  -printfuns    list functions information\n");
 810     printf("parameters:\n");
 811     printf("  -vector <V>   pass a vector parameter to main()\n"
 812            "  -float  <f>   pass a float parameter to main()\n"
 813            "  -string <s>   pass a string parameter to main() \n");
 814 }
 815
 816 static void prog_main_setparams(qc_program *prog)
 817 {
 818     size_t i;
 819     qcany *arg;
 820
 821     for (i = 0; i < vec_size(main_params); ++i) {
 822         arg = GetGlobal(OFS_PARM0 + 3*i);
 823         arg->vector[0] = 0;
 824         arg->vector[1] = 0;
 825         arg->vector[2] = 0;
 826         switch (main_params[i].vtype) {
 827             case TYPE_VECTOR:
 828 #ifdef _MSC_VER
 829                 (void)sscanf_s(main_params[i].value, " %f %f %f ",
 830                                &arg->vector[0],
 831                                &arg->vector[1],
 832                                &arg->vector[2]);
 833 #else
 834                 (void)sscanf(main_params[i].value, " %f %f %f ",
 835                              &arg->vector[0],
 836                              &arg->vector[1],
 837                              &arg->vector[2]);
 838 #endif
 839                 break;
 840             case TYPE_FLOAT:
 841                 arg->_float = atof(main_params[i].value);
 842                 break;
 843             case TYPE_STRING:
 844                 arg->string = prog_tempstring(prog, main_params[i].value);
 845                 break;
 846             default:
 847                 printf("error: unhandled parameter type: %i\n", main_params[i].vtype);
 848                 break;
 849         }
 850     }
 851 }
 852
 853 void prog_disasm_function(qc_program *prog, size_t id);
 854 int main(int argc, char **argv)
 855 {
 856     size_t      i;
 857     qcint       fnmain = -1;
 858     qc_program *prog;
 859     size_t      xflags = VMXF_DEFAULT;
 860     bool        opts_printfields = false;
 861     bool        opts_printdefs   = false;
 862     bool        opts_printfuns   = false;
 863     bool        opts_disasm      = false;
 864     bool        opts_info        = false;
 865     bool        noexec           = false;
 866     const char *progsfile        = NULL;
 867
 868     arg0 = argv[0];
 869
 870     if (argc < 2) {
 871         usage();
 872         exit(1);
 873     }
 874
 875     while (argc > 1) {
 876         if (!strcmp(argv[1], "-h") ||
 877             !strcmp(argv[1], "-help") ||
 878             !strcmp(argv[1], "--help"))
 879         {
 880             usage();
 881             exit(0);
 882         }
 883         else if (!strcmp(argv[1], "-v") ||
 884                  !strcmp(argv[1], "-version") ||
 885                  !strcmp(argv[1], "--version"))
 886         {
 887             version();
 888             exit(0);
 889         }
 890         else if (!strcmp(argv[1], "-trace")) {
 891             --argc;
 892             ++argv;
 893             xflags |= VMXF_TRACE;
 894         }
 895         else if (!strcmp(argv[1], "-profile")) {
 896             --argc;
 897             ++argv;
 898             xflags |= VMXF_PROFILE;
 899         }
 900         else if (!strcmp(argv[1], "-info")) {
 901             --argc;
 902             ++argv;
 903             opts_info = true;
 904             noexec = true;
 905         }
 906         else if (!strcmp(argv[1], "-disasm")) {
 907             --argc;
 908             ++argv;
 909             opts_disasm = true;
 910             noexec = true;
 911         }
 912         else if (!strcmp(argv[1], "-printdefs")) {
 913             --argc;
 914             ++argv;
 915             opts_printdefs = true;
 916             noexec = true;
 917         }
 918         else if (!strcmp(argv[1], "-printfuns")) {
 919             --argc;
 920             ++argv;
 921             opts_printfuns = true;
 922             noexec = true;
 923         }
 924         else if (!strcmp(argv[1], "-printfields")) {
 925             --argc;
 926             ++argv;
 927             opts_printfields = true;
 928             noexec = true;
 929         }
 930         else if (!strcmp(argv[1], "-vector") ||
 931                  !strcmp(argv[1], "-string") ||
 932                  !strcmp(argv[1], "-float") )
 933         {
 934             qcvm_parameter p;
 935             if (argv[1][1] == 'f')
 936                 p.vtype = TYPE_FLOAT;
 937             else if (argv[1][1] == 's')
 938                 p.vtype = TYPE_STRING;
 939             else if (argv[1][1] == 'v')
 940                 p.vtype = TYPE_VECTOR;
 941
 942             --argc;
 943             ++argv;
 944             if (argc < 3) {
 945                 usage();
 946                 exit(1);
 947             }
 948             p.value = argv[1];
 949
 950             vec_push(main_params, p);
 951             --argc;
 952             ++argv;
 953         }
 954         else if (!strcmp(argv[1], "--")) {
 955             --argc;
 956             ++argv;
 957             break;
 958         }
 959         else if (argv[1][0] != '-') {
 960             if (progsfile) {
 961                 printf("only 1 program file may be specified\n");
 962                 usage();
 963                 exit(1);
 964             }
 965             progsfile = argv[1];
 966             --argc;
 967             ++argv;
 968         }
 969         else
 970         {
 971             usage();
 972             exit(1);
 973         }
 974     }
 975
 976     if (argc > 2) {
 977         usage();
 978         exit(1);
 979     }
 980     if (argc > 1) {
 981         if (progsfile) {
 982             printf("only 1 program file may be specified\n");
 983             usage();
 984             exit(1);
 985         }
 986         progsfile = argv[1];
 987         --argc;
 988         ++argv;
 989     }
 990
 991     if (!progsfile) {
 992         usage();
 993         exit(1);
 994     }
 995
 996     prog = prog_load(progsfile);
 997     if (!prog) {
 998         printf("failed to load program '%s'\n", progsfile);
 999         exit(1);
1000     }
1001
1002     prog->builtins       = qc_builtins;
1003     prog->builtins_count = qc_builtins_count;
1004
1005     if (opts_info) {
1006         printf("Program's system-checksum = 0x%04x\n", (unsigned int)prog->crc16);
1007         printf("Entity field space: %u\n", (unsigned int)prog->entityfields);
1008         printf("Globals: %u\n", (unsigned int)vec_size(prog->globals));
1009         printf("Counts:\n"
1010                "      code: %lu\n"
1011                "      defs: %lu\n"
1012                "    fields: %lu\n"
1013                " functions: %lu\n"
1014                "   strings: %lu\n",
1015                (unsigned long)vec_size(prog->code),
1016                (unsigned long)vec_size(prog->defs),
1017                (unsigned long)vec_size(prog->fields),
1018                (unsigned long)vec_size(prog->functions),
1019                (unsigned long)vec_size(prog->strings));
1020     }
1021
1022     if (opts_info) {
1023         prog_delete(prog);
1024         return 0;
1025     }
1026     if (opts_disasm) {
1027         for (i = 1; i < vec_size(prog->functions); ++i)
1028             prog_disasm_function(prog, i);
1029         return 0;
1030     }
1031     if (opts_printdefs) {
1032         for (i = 0; i < vec_size(prog->defs); ++i) {
1033             printf("Global: %8s %-16s at %u%s\n",
1034                    type_name[prog->defs[i].type & DEF_TYPEMASK],
1035                    prog_getstring(prog, prog->defs[i].name),
1036                    (unsigned int)prog->defs[i].offset,
1037                    ((prog->defs[i].type & DEF_SAVEGLOBAL) ? " [SAVE]" : ""));
1038         }
1039     }
1040     if (opts_printfields) {
1041         for (i = 0; i < vec_size(prog->fields); ++i) {
1042             printf("Field: %8s %-16s at %u%s\n",
1043                    type_name[prog->fields[i].type],
1044                    prog_getstring(prog, prog->fields[i].name),
1045                    (unsigned int)prog->fields[i].offset,
1046                    ((prog->fields[i].type & DEF_SAVEGLOBAL) ? " [SAVE]" : ""));
1047         }
1048     }
1049     if (opts_printfuns) {
1050         for (i = 0; i < vec_size(prog->functions); ++i) {
1051             int32_t a;
1052             printf("Function: %-16s taking %i parameters:(",
1053                    prog_getstring(prog, prog->functions[i].name),
1054                    (unsigned int)prog->functions[i].nargs);
1055             for (a = 0; a < prog->functions[i].nargs; ++a) {
1056                 printf(" %i", prog->functions[i].argsize[a]);
1057             }
1058             printf(") locals: %i + %i\n",
1059                    prog->functions[i].firstlocal,
1060                    prog->functions[i].locals);
1061         }
1062     }
1063     if (!noexec) {
1064         for (i = 1; i < vec_size(prog->functions); ++i) {
1065             const char *name = prog_getstring(prog, prog->functions[i].name);
1066             if (!strcmp(name, "main"))
1067                 fnmain = (qcint)i;
1068         }
1069         if (fnmain > 0)
1070         {
1071             prog_main_setparams(prog);
1072             prog_exec(prog, &prog->functions[fnmain], xflags, VM_JUMPS_DEFAULT);
1073         }
1074         else
1075             printf("No main function found\n");
1076     }
1077
1078     prog_delete(prog);
1079     return 0;
1080 }
1081
1082 void prog_disasm_function(qc_program *prog, size_t id)
1083 {
1084     prog_section_function *fdef = prog->functions + id;
1085     prog_section_statement *st;
1086
1087     if (fdef->entry < 0) {
1088         printf("FUNCTION \"%s\" = builtin #%i\n", prog_getstring(prog, fdef->name), (int)-fdef->entry);
1089         return;
1090     }
1091     else
1092         printf("FUNCTION \"%s\"\n", prog_getstring(prog, fdef->name));
1093
1094     st = prog->code + fdef->entry;
1095     while (st->opcode != INSTR_DONE) {
1096         prog_print_statement(prog, st);
1097         ++st;
1098     }
1099 }
1100 #endif
1101 #else /* !QCVM_LOOP */
1102 /*
1103  * Everything from here on is not including into the compilation of the
1104  * executor.  This is simply code that is #included via #include __FILE__
1105  * see when QCVM_LOOP is defined, the rest of the code above do not get
1106  * re-included.  So this really just acts like one large macro, but it
1107  * sort of isn't, which makes it nicer looking.
1108  */
1109
1110 #define OPA ( (qcany*) (prog->globals + st->o1.u1) )
1111 #define OPB ( (qcany*) (prog->globals + st->o2.u1) )
1112 #define OPC ( (qcany*) (prog->globals + st->o3.u1) )
1113
1114 #define GLOBAL(x) ( (qcany*) (prog->globals + (x)) )
1115
1116 /* to be consistent with current darkplaces behaviour */
1117 #if !defined(FLOAT_IS_TRUE_FOR_INT)
1118 #   define FLOAT_IS_TRUE_FOR_INT(x) ( (x) & 0x7FFFFFFF )
1119 #endif
1120
1121 while (1) {
1122     prog_section_function  *newf;
1123     qcany          *ed;
1124     qcany          *ptr;
1125
1126     ++st;
1127
1128 #if QCVM_PROFILE
1129     prog->profile[st - prog->code]++;
1130 #endif
1131
1132 #if QCVM_TRACE
1133     prog_print_statement(prog, st);
1134 #endif
1135
1136     switch (st->opcode)
1137     {
1138         default:
1139             qcvmerror(prog, "Illegal instruction in %s\n", prog->filename);
1140             goto cleanup;
1141
1142         case INSTR_DONE:
1143         case INSTR_RETURN:
1144             /* TODO: add instruction count to function profile count */
1145             GLOBAL(OFS_RETURN)->ivector[0] = OPA->ivector[0];
1146             GLOBAL(OFS_RETURN)->ivector[1] = OPA->ivector[1];
1147             GLOBAL(OFS_RETURN)->ivector[2] = OPA->ivector[2];
1148
1149             st = prog->code + prog_leavefunction(prog);
1150             if (!vec_size(prog->stack))
1151                 goto cleanup;
1152
1153             break;
1154
1155         case INSTR_MUL_F:
1156             OPC->_float = OPA->_float * OPB->_float;
1157             break;
1158         case INSTR_MUL_V:
1159             OPC->_float = OPA->vector[0]*OPB->vector[0] +
1160                           OPA->vector[1]*OPB->vector[1] +
1161                           OPA->vector[2]*OPB->vector[2];
1162             break;
1163         case INSTR_MUL_FV:
1164             OPC->vector[0] = OPA->_float * OPB->vector[0];
1165             OPC->vector[1] = OPA->_float * OPB->vector[1];
1166             OPC->vector[2] = OPA->_float * OPB->vector[2];
1167             break;
1168         case INSTR_MUL_VF:
1169             OPC->vector[0] = OPB->_float * OPA->vector[0];
1170             OPC->vector[1] = OPB->_float * OPA->vector[1];
1171             OPC->vector[2] = OPB->_float * OPA->vector[2];
1172             break;
1173         case INSTR_DIV_F:
1174             if (OPB->_float != 0.0f)
1175                 OPC->_float = OPA->_float / OPB->_float;
1176             else
1177                 OPC->_float = 0;
1178             break;
1179
1180         case INSTR_ADD_F:
1181             OPC->_float = OPA->_float + OPB->_float;
1182             break;
1183         case INSTR_ADD_V:
1184             OPC->vector[0] = OPA->vector[0] + OPB->vector[0];
1185             OPC->vector[1] = OPA->vector[1] + OPB->vector[1];
1186             OPC->vector[2] = OPA->vector[2] + OPB->vector[2];
1187             break;
1188         case INSTR_SUB_F:
1189             OPC->_float = OPA->_float - OPB->_float;
1190             break;
1191         case INSTR_SUB_V:
1192             OPC->vector[0] = OPA->vector[0] - OPB->vector[0];
1193             OPC->vector[1] = OPA->vector[1] - OPB->vector[1];
1194             OPC->vector[2] = OPA->vector[2] - OPB->vector[2];
1195             break;
1196
1197         case INSTR_EQ_F:
1198             OPC->_float = (OPA->_float == OPB->_float);
1199             break;
1200         case INSTR_EQ_V:
1201             OPC->_float = ((OPA->vector[0] == OPB->vector[0]) &&
1202                            (OPA->vector[1] == OPB->vector[1]) &&
1203                            (OPA->vector[2] == OPB->vector[2]) );
1204             break;
1205         case INSTR_EQ_S:
1206             OPC->_float = !strcmp(prog_getstring(prog, OPA->string),
1207                                   prog_getstring(prog, OPB->string));
1208             break;
1209         case INSTR_EQ_E:
1210             OPC->_float = (OPA->_int == OPB->_int);
1211             break;
1212         case INSTR_EQ_FNC:
1213             OPC->_float = (OPA->function == OPB->function);
1214             break;
1215         case INSTR_NE_F:
1216             OPC->_float = (OPA->_float != OPB->_float);
1217             break;
1218         case INSTR_NE_V:
1219             OPC->_float = ((OPA->vector[0] != OPB->vector[0]) ||
1220                            (OPA->vector[1] != OPB->vector[1]) ||
1221                            (OPA->vector[2] != OPB->vector[2]) );
1222             break;
1223         case INSTR_NE_S:
1224             OPC->_float = !!strcmp(prog_getstring(prog, OPA->string),
1225                                    prog_getstring(prog, OPB->string));
1226             break;
1227         case INSTR_NE_E:
1228             OPC->_float = (OPA->_int != OPB->_int);
1229             break;
1230         case INSTR_NE_FNC:
1231             OPC->_float = (OPA->function != OPB->function);
1232             break;
1233
1234         case INSTR_LE:
1235             OPC->_float = (OPA->_float <= OPB->_float);
1236             break;
1237         case INSTR_GE:
1238             OPC->_float = (OPA->_float >= OPB->_float);
1239             break;
1240         case INSTR_LT:
1241             OPC->_float = (OPA->_float < OPB->_float);
1242             break;
1243         case INSTR_GT:
1244             OPC->_float = (OPA->_float > OPB->_float);
1245             break;
1246
1247         case INSTR_LOAD_F:
1248         case INSTR_LOAD_S:
1249         case INSTR_LOAD_FLD:
1250         case INSTR_LOAD_ENT:
1251         case INSTR_LOAD_FNC:
1252             if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1253                 qcvmerror(prog, "progs `%s` attempted to read an out of bounds entity", prog->filename);
1254                 goto cleanup;
1255             }
1256             if ((unsigned int)(OPB->_int) >= (unsigned int)(prog->entityfields)) {
1257                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1258                           prog->filename,
1259                           OPB->_int);
1260                 goto cleanup;
1261             }
1262             ed = prog_getedict(prog, OPA->edict);
1263             OPC->_int = ((qcany*)( ((qcint*)ed) + OPB->_int ))->_int;
1264             break;
1265         case INSTR_LOAD_V:
1266             if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1267                 qcvmerror(prog, "progs `%s` attempted to read an out of bounds entity", prog->filename);
1268                 goto cleanup;
1269             }
1270             if (OPB->_int < 0 || OPB->_int + 3 > (qcint)prog->entityfields)
1271             {
1272                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1273                           prog->filename,
1274                           OPB->_int + 2);
1275                 goto cleanup;
1276             }
1277             ed = prog_getedict(prog, OPA->edict);
1278             OPC->ivector[0] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[0];
1279             OPC->ivector[1] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[1];
1280             OPC->ivector[2] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[2];
1281             break;
1282
1283         case INSTR_ADDRESS:
1284             if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1285                 qcvmerror(prog, "prog `%s` attempted to address an out of bounds entity %i", prog->filename, OPA->edict);
1286                 goto cleanup;
1287             }
1288             if ((unsigned int)(OPB->_int) >= (unsigned int)(prog->entityfields))
1289             {
1290                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1291                           prog->filename,
1292                           OPB->_int);
1293                 goto cleanup;
1294             }
1295
1296             ed = prog_getedict(prog, OPA->edict);
1297             OPC->_int = ((qcint*)ed) - prog->entitydata + OPB->_int;
1298             break;
1299
1300         case INSTR_STORE_F:
1301         case INSTR_STORE_S:
1302         case INSTR_STORE_ENT:
1303         case INSTR_STORE_FLD:
1304         case INSTR_STORE_FNC:
1305             OPB->_int = OPA->_int;
1306             break;
1307         case INSTR_STORE_V:
1308             OPB->ivector[0] = OPA->ivector[0];
1309             OPB->ivector[1] = OPA->ivector[1];
1310             OPB->ivector[2] = OPA->ivector[2];
1311             break;
1312
1313         case INSTR_STOREP_F:
1314         case INSTR_STOREP_S:
1315         case INSTR_STOREP_ENT:
1316         case INSTR_STOREP_FLD:
1317         case INSTR_STOREP_FNC:
1318             if (OPB->_int < 0 || OPB->_int >= (qcint)vec_size(prog->entitydata)) {
1319                 qcvmerror(prog, "`%s` attempted to write to an out of bounds edict (%i)", prog->filename, OPB->_int);
1320                 goto cleanup;
1321             }
1322             if (OPB->_int < (qcint)prog->entityfields && !prog->allowworldwrites)
1323                 qcvmerror(prog, "`%s` tried to assign to world.%s (field %i)\n",
1324                           prog->filename,
1325                           prog_getstring(prog, prog_entfield(prog, OPB->_int)->name),
1326                           OPB->_int);
1327             ptr = (qcany*)(prog->entitydata + OPB->_int);
1328             ptr->_int = OPA->_int;
1329             break;
1330         case INSTR_STOREP_V:
1331             if (OPB->_int < 0 || OPB->_int + 2 >= (qcint)vec_size(prog->entitydata)) {
1332                 qcvmerror(prog, "`%s` attempted to write to an out of bounds edict (%i)", prog->filename, OPB->_int);
1333                 goto cleanup;
1334             }
1335             if (OPB->_int < (qcint)prog->entityfields && !prog->allowworldwrites)
1336                 qcvmerror(prog, "`%s` tried to assign to world.%s (field %i)\n",
1337                           prog->filename,
1338                           prog_getstring(prog, prog_entfield(prog, OPB->_int)->name),
1339                           OPB->_int);
1340             ptr = (qcany*)(prog->entitydata + OPB->_int);
1341             ptr->ivector[0] = OPA->ivector[0];
1342             ptr->ivector[1] = OPA->ivector[1];
1343             ptr->ivector[2] = OPA->ivector[2];
1344             break;
1345
1346         case INSTR_NOT_F:
1347             OPC->_float = !FLOAT_IS_TRUE_FOR_INT(OPA->_int);
1348             break;
1349         case INSTR_NOT_V:
1350             OPC->_float = !OPA->vector[0] &&
1351                           !OPA->vector[1] &&
1352                           !OPA->vector[2];
1353             break;
1354         case INSTR_NOT_S:
1355             OPC->_float = !OPA->string ||
1356                           !*prog_getstring(prog, OPA->string);
1357             break;
1358         case INSTR_NOT_ENT:
1359             OPC->_float = (OPA->edict == 0);
1360             break;
1361         case INSTR_NOT_FNC:
1362             OPC->_float = !OPA->function;
1363             break;
1364
1365         case INSTR_IF:
1366             /* this is consistent with darkplaces' behaviour */
1367             if(FLOAT_IS_TRUE_FOR_INT(OPA->_int))
1368             {
1369                 st += st->o2.s1 - 1;    /* offset the s++ */
1370                 if (++jumpcount >= maxjumps)
1371                     qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1372             }
1373             break;
1374         case INSTR_IFNOT:
1375             if(!FLOAT_IS_TRUE_FOR_INT(OPA->_int))
1376             {
1377                 st += st->o2.s1 - 1;    /* offset the s++ */
1378                 if (++jumpcount >= maxjumps)
1379                     qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1380             }
1381             break;
1382
1383         case INSTR_CALL0:
1384         case INSTR_CALL1:
1385         case INSTR_CALL2:
1386         case INSTR_CALL3:
1387         case INSTR_CALL4:
1388         case INSTR_CALL5:
1389         case INSTR_CALL6:
1390         case INSTR_CALL7:
1391         case INSTR_CALL8:
1392             prog->argc = st->opcode - INSTR_CALL0;
1393             if (!OPA->function)
1394                 qcvmerror(prog, "NULL function in `%s`", prog->filename);
1395
1396             if(!OPA->function || OPA->function >= (qcint)vec_size(prog->functions))
1397             {
1398                 qcvmerror(prog, "CALL outside the program in `%s`", prog->filename);
1399                 goto cleanup;
1400             }
1401
1402             newf = &prog->functions[OPA->function];
1403             newf->profile++;
1404
1405             prog->statement = (st - prog->code) + 1;
1406
1407             if (newf->entry < 0)
1408             {
1409                 /* negative statements are built in functions */
1410                 qcint builtinnumber = -newf->entry;
1411                 if (builtinnumber < (qcint)prog->builtins_count && prog->builtins[builtinnumber])
1412                     prog->builtins[builtinnumber](prog);
1413                 else
1414                     qcvmerror(prog, "No such builtin #%i in %s! Try updating your gmqcc sources",
1415                               builtinnumber, prog->filename);
1416             }
1417             else
1418                 st = prog->code + prog_enterfunction(prog, newf) - 1; /* offset st++ */
1419             if (prog->vmerror)
1420                 goto cleanup;
1421             break;
1422
1423         case INSTR_STATE:
1424             qcvmerror(prog, "`%s` tried to execute a STATE operation", prog->filename);
1425             break;
1426
1427         case INSTR_GOTO:
1428             st += st->o1.s1 - 1;    /* offset the s++ */
1429             if (++jumpcount == 10000000)
1430                 qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1431             break;
1432
1433         case INSTR_AND:
1434             OPC->_float = FLOAT_IS_TRUE_FOR_INT(OPA->_int) &&
1435                           FLOAT_IS_TRUE_FOR_INT(OPB->_int);
1436             break;
1437         case INSTR_OR:
1438             OPC->_float = FLOAT_IS_TRUE_FOR_INT(OPA->_int) ||
1439                           FLOAT_IS_TRUE_FOR_INT(OPB->_int);
1440             break;
1441
1442         case INSTR_BITAND:
1443             OPC->_float = ((int)OPA->_float) & ((int)OPB->_float);
1444             break;
1445         case INSTR_BITOR:
1446             OPC->_float = ((int)OPA->_float) | ((int)OPB->_float);
1447             break;
1448     }
1449 }
1450
1451 #undef QCVM_PROFILE
1452 #undef QCVM_TRACE
1453 #endif /* !QCVM_LOOP */