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 MEM_VEC_FUNCTIONS(qc_program,   prog_section_statement, code)
  33 MEM_VEC_FUNCTIONS(qc_program,   prog_section_def,       defs)
  34 MEM_VEC_FUNCTIONS(qc_program,   prog_section_def,       fields)
  35 MEM_VEC_FUNCTIONS(qc_program,   prog_section_function,  functions)
  36 MEM_VEC_FUNCTIONS(qc_program,   char,                   strings)
  37 MEM_VEC_FUN_APPEND(qc_program,  char,                   strings)
  38 MEM_VEC_FUN_RESIZE(qc_program,  char,                   strings)
  39 MEM_VEC_FUNCTIONS(qc_program,   qcint,                  globals)
  40 MEM_VEC_FUNCTIONS(qc_program,   qcint,                  entitydata)
  41 MEM_VEC_FUNCTIONS(qc_program,   bool,                   entitypool)
  42
  43 MEM_VEC_FUNCTIONS(qc_program,   qcint,         localstack)
  44 MEM_VEC_FUN_APPEND(qc_program,  qcint,         localstack)
  45 MEM_VEC_FUN_RESIZE(qc_program,  qcint,         localstack)
  46 MEM_VEC_FUNCTIONS(qc_program,   qc_exec_stack, stack)
  47
  48 MEM_VEC_FUNCTIONS(qc_program,   size_t, profile)
  49 MEM_VEC_FUN_RESIZE(qc_program,  size_t, profile)
  50
  51 MEM_VEC_FUNCTIONS(qc_program,   prog_builtin, builtins)
  52
  53 static void loaderror(const char *fmt, ...)
  54 {
  55     int     err = errno;
  56     va_list ap;
  57     va_start(ap, fmt);
  58     vprintf(fmt, ap);
  59     va_end(ap);
  60     printf(": %s\n", strerror(err));
  61 }
  62
  63 static void qcvmerror(qc_program *prog, const char *fmt, ...)
  64 {
  65     va_list ap;
  66
  67     prog->vmerror++;
  68
  69     va_start(ap, fmt);
  70     vprintf(fmt, ap);
  71     va_end(ap);
  72     putchar('\n');
  73 }
  74
  75 qc_program* prog_load(const char *filename)
  76 {
  77     qc_program *prog;
  78     prog_header header;
  79     size_t      i;
  80     FILE *file;
  81
  82     file = util_fopen(filename, "rb");
  83     if (!file)
  84         return NULL;
  85
  86     if (fread(&header, sizeof(header), 1, file) != 1) {
  87         loaderror("failed to read header from '%s'", filename);
  88         fclose(file);
  89         return NULL;
  90     }
  91
  92     if (header.version != 6) {
  93         loaderror("header says this is a version %i progs, we need version 6\n", header.version);
  94         fclose(file);
  95         return NULL;
  96     }
  97
  98     prog = (qc_program*)mem_a(sizeof(qc_program));
  99     if (!prog) {
 100         fclose(file);
 101         printf("failed to allocate program data\n");
 102         return NULL;
 103     }
 104     memset(prog, 0, sizeof(*prog));
 105
 106     prog->entityfields = header.entfield;
 107     prog->crc16 = header.crc16;
 108
 109     prog->filename = util_strdup(filename);
 110     if (!prog->filename) {
 111         loaderror("failed to store program name");
 112         goto error;
 113     }
 114
 115 #define read_data(hdrvar, progvar, type)                                         \
 116     if (fseek(file, header.hdrvar.offset, SEEK_SET) != 0) {                      \
 117         loaderror("seek failed");                                                \
 118         goto error;                                                              \
 119     }                                                                            \
 120     prog->progvar##_alloc = header.hdrvar.length;                                \
 121     prog->progvar##_count = header.hdrvar.length;                                \
 122     prog->progvar = (type*)mem_a(header.hdrvar.length * sizeof(*prog->progvar)); \
 123     if (!prog->progvar)                                                          \
 124         goto error;                                                              \
 125     if (fread(prog->progvar, sizeof(*prog->progvar), header.hdrvar.length, file) \
 126         != header.hdrvar.length) {                                               \
 127         loaderror("read failed");                                                \
 128         goto error;                                                              \
 129     }
 130 #define read_data1(x, y) read_data(x, x, y)
 131
 132     read_data (statements, code, prog_section_statement);
 133     read_data1(defs,             prog_section_def);
 134     read_data1(fields,           prog_section_def);
 135     read_data1(functions,        prog_section_function);
 136     read_data1(strings,          char);
 137     read_data1(globals,          qcint);
 138
 139     fclose(file);
 140
 141     /* profile counters */
 142     if (!qc_program_profile_resize(prog, prog->code_count))
 143         goto error;
 144
 145     /* Add tempstring area */
 146     prog->tempstring_start = prog->strings_count;
 147     prog->tempstring_at    = prog->strings_count;
 148     if (!qc_program_strings_resize(prog, prog->strings_count + 16*1024))
 149         goto error;
 150
 151     /* spawn the world entity */
 152     if (!qc_program_entitypool_add(prog, true)) {
 153         loaderror("failed to allocate world entity\n");
 154         goto error;
 155     }
 156     for (i = 0; i < prog->entityfields; ++i) {
 157         if (!qc_program_entitydata_add(prog, 0)) {
 158             loaderror("failed to allocate world data\n");
 159             goto error;
 160         }
 161     }
 162     prog->entities = 1;
 163
 164     return prog;
 165
 166 error:
 167     if (prog->filename)   mem_d(prog->filename);
 168     if (prog->code)       mem_d(prog->code);
 169     if (prog->defs)       mem_d(prog->defs);
 170     if (prog->fields)     mem_d(prog->fields);
 171     if (prog->functions)  mem_d(prog->functions);
 172     if (prog->strings)    mem_d(prog->strings);
 173     if (prog->globals)    mem_d(prog->globals);
 174     if (prog->entitydata) mem_d(prog->entitydata);
 175     if (prog->entitypool) mem_d(prog->entitypool);
 176     mem_d(prog);
 177     return NULL;
 178 }
 179
 180 void prog_delete(qc_program *prog)
 181 {
 182     if (prog->filename) mem_d(prog->filename);
 183     MEM_VECTOR_CLEAR(prog, code);
 184     MEM_VECTOR_CLEAR(prog, defs);
 185     MEM_VECTOR_CLEAR(prog, fields);
 186     MEM_VECTOR_CLEAR(prog, functions);
 187     MEM_VECTOR_CLEAR(prog, strings);
 188     MEM_VECTOR_CLEAR(prog, globals);
 189     MEM_VECTOR_CLEAR(prog, entitydata);
 190     MEM_VECTOR_CLEAR(prog, entitypool);
 191     MEM_VECTOR_CLEAR(prog, localstack);
 192     MEM_VECTOR_CLEAR(prog, stack);
 193     MEM_VECTOR_CLEAR(prog, profile);
 194
 195     if (prog->builtins_alloc) {
 196         MEM_VECTOR_CLEAR(prog, builtins);
 197     }
 198     /* otherwise the builtins were statically allocated */
 199     mem_d(prog);
 200 }
 201
 202 /***********************************************************************
 203  * VM code
 204  */
 205
 206 char* prog_getstring(qc_program *prog, qcint str)
 207 {
 208     if (str < 0 || str >= prog->strings_count)
 209         return "<<<invalid string>>>";
 210     return prog->strings + str;
 211 }
 212
 213 prog_section_def* prog_entfield(qc_program *prog, qcint off)
 214 {
 215     size_t i;
 216     for (i = 0; i < prog->fields_count; ++i) {
 217         if (prog->fields[i].offset == off)
 218             return (prog->fields + i);
 219     }
 220     return NULL;
 221 }
 222
 223 prog_section_def* prog_getdef(qc_program *prog, qcint off)
 224 {
 225     size_t i;
 226     for (i = 0; i < prog->defs_count; ++i) {
 227         if (prog->defs[i].offset == off)
 228             return (prog->defs + i);
 229     }
 230     return NULL;
 231 }
 232
 233 qcany* prog_getedict(qc_program *prog, qcint e)
 234 {
 235     if (e >= prog->entitypool_count) {
 236         prog->vmerror++;
 237         printf("Accessing out of bounds edict %i\n", (int)e);
 238         e = 0;
 239     }
 240     return (qcany*)(prog->entitydata + (prog->entityfields * e));
 241 }
 242
 243 qcint prog_spawn_entity(qc_program *prog)
 244 {
 245     char  *data;
 246     size_t i;
 247     qcint  e;
 248     for (e = 0; e < (qcint)prog->entitypool_count; ++e) {
 249         if (!prog->entitypool[e]) {
 250             data = (char*)(prog->entitydata + (prog->entityfields * e));
 251             memset(data, 0, prog->entityfields * sizeof(qcint));
 252             return e;
 253         }
 254     }
 255     if (!qc_program_entitypool_add(prog, true)) {
 256         prog->vmerror++;
 257         printf("Failed to allocate entity\n");
 258         return 0;
 259     }
 260     prog->entities++;
 261     for (i = 0; i < prog->entityfields; ++i) {
 262         if (!qc_program_entitydata_add(prog, 0)) {
 263             printf("Failed to allocate entity\n");
 264             return 0;
 265         }
 266     }
 267     data = (char*)(prog->entitydata + (prog->entityfields * e));
 268     memset(data, 0, prog->entityfields * sizeof(qcint));
 269     return e;
 270 }
 271
 272 void prog_free_entity(qc_program *prog, qcint e)
 273 {
 274     if (!e) {
 275         prog->vmerror++;
 276         printf("Trying to free world entity\n");
 277         return;
 278     }
 279     if (e >= prog->entitypool_count) {
 280         prog->vmerror++;
 281         printf("Trying to free out of bounds entity\n");
 282         return;
 283     }
 284     if (!prog->entitypool[e]) {
 285         prog->vmerror++;
 286         printf("Double free on entity\n");
 287         return;
 288     }
 289     prog->entitypool[e] = false;
 290 }
 291
 292 qcint prog_tempstring(qc_program *prog, const char *_str)
 293 {
 294     /* we don't access it, but the macro-generated functions don't use
 295      * const
 296      */
 297     char *str = (char*)_str;
 298
 299     size_t len = strlen(str);
 300     size_t at = prog->tempstring_at;
 301
 302     /* when we reach the end we start over */
 303     if (at + len >= prog->strings_count)
 304         at = prog->tempstring_start;
 305
 306     /* when it doesn't fit, reallocate */
 307     if (at + len >= prog->strings_count)
 308     {
 309         prog->strings_count = at;
 310         if (!qc_program_strings_append(prog, str, len+1)) {
 311             prog->vmerror = VMERR_TEMPSTRING_ALLOC;
 312             return 0;
 313         }
 314         return at;
 315     }
 316
 317     /* when it fits, just copy */
 318     memcpy(prog->strings + at, str, len+1);
 319     prog->tempstring_at += len+1;
 320     return at;
 321 }
 322
 323 static int print_escaped_string(const char *str, size_t maxlen)
 324 {
 325     int len = 2;
 326     putchar('"');
 327     --maxlen; /* because we're lazy and have escape sequences */
 328     while (*str) {
 329         if (len >= maxlen) {
 330             putchar('.');
 331             putchar('.');
 332             putchar('.');
 333             len += 3;
 334             break;
 335         }
 336         switch (*str) {
 337             case '\a': len += 2; putchar('\\'); putchar('a'); break;
 338             case '\b': len += 2; putchar('\\'); putchar('b'); break;
 339             case '\r': len += 2; putchar('\\'); putchar('r'); break;
 340             case '\n': len += 2; putchar('\\'); putchar('n'); break;
 341             case '\t': len += 2; putchar('\\'); putchar('t'); break;
 342             case '\f': len += 2; putchar('\\'); putchar('f'); break;
 343             case '\v': len += 2; putchar('\\'); putchar('v'); break;
 344             case '\\': len += 2; putchar('\\'); putchar('\\'); break;
 345             case '"':  len += 2; putchar('\\'); putchar('"'); break;
 346             default:
 347                 ++len;
 348                 putchar(*str);
 349                 break;
 350         }
 351         ++str;
 352     }
 353     putchar('"');
 354     return len;
 355 }
 356
 357 static void trace_print_global(qc_program *prog, unsigned int glob, int vtype)
 358 {
 359     static char spaces[28+1] = "                            ";
 360     prog_section_def *def;
 361     qcany    *value;
 362     int       len;
 363
 364     if (!glob) {
 365         len = printf("<null>,");
 366         goto done;
 367     }
 368
 369     def = prog_getdef(prog, glob);
 370     value = (qcany*)(&prog->globals[glob]);
 371
 372     if (def) {
 373         const char *name = prog_getstring(prog, def->name);
 374         if (name[0] == '#')
 375             len = printf("$");
 376         else
 377             len = printf("%s ", name);
 378         vtype = def->type;
 379     }
 380     else
 381         len = printf("[@%u] ", glob);
 382
 383     switch (vtype) {
 384         case TYPE_VOID:
 385         case TYPE_ENTITY:
 386         case TYPE_FIELD:
 387         case TYPE_FUNCTION:
 388         case TYPE_POINTER:
 389             len += printf("(%i),", value->_int);
 390             break;
 391         case TYPE_VECTOR:
 392             len += printf("'%g %g %g',", value->vector[0],
 393                                          value->vector[1],
 394                                          value->vector[2]);
 395             break;
 396         case TYPE_STRING:
 397             len += print_escaped_string(prog_getstring(prog, value->string), sizeof(spaces)-len-5);
 398             len += printf(",");
 399             /* len += printf("\"%s\",", prog_getstring(prog, value->string)); */
 400             break;
 401         case TYPE_FLOAT:
 402         default:
 403             len += printf("%g,", value->_float);
 404             break;
 405     }
 406 done:
 407     if (len < sizeof(spaces)-1) {
 408         spaces[sizeof(spaces)-1-len] = 0;
 409         printf(spaces);
 410         spaces[sizeof(spaces)-1-len] = ' ';
 411     }
 412 }
 413
 414 static void prog_print_statement(qc_program *prog, prog_section_statement *st)
 415 {
 416     if (st->opcode >= (sizeof(asm_instr)/sizeof(asm_instr[0]))) {
 417         printf("<illegal instruction %d>\n", st->opcode);
 418         return;
 419     }
 420     printf(" <> %-12s", asm_instr[st->opcode].m);
 421     if (st->opcode >= INSTR_IF &&
 422         st->opcode <= INSTR_IFNOT)
 423     {
 424         trace_print_global(prog, st->o1.u1, TYPE_FLOAT);
 425         printf("%d\n", st->o2.s1);
 426     }
 427     else if (st->opcode >= INSTR_CALL0 &&
 428              st->opcode <= INSTR_CALL8)
 429     {
 430         printf("\n");
 431     }
 432     else if (st->opcode == INSTR_GOTO)
 433     {
 434         printf("%i\n", st->o1.s1);
 435     }
 436     else
 437     {
 438         int t[3] = { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT };
 439         switch (st->opcode)
 440         {
 441             case INSTR_MUL_FV:
 442                 t[1] = t[2] = TYPE_VECTOR;
 443                 break;
 444             case INSTR_MUL_VF:
 445                 t[0] = t[2] = TYPE_VECTOR;
 446                 break;
 447             case INSTR_MUL_V:
 448                 t[0] = t[1] = TYPE_VECTOR;
 449                 break;
 450             case INSTR_ADD_V:
 451             case INSTR_SUB_V:
 452             case INSTR_EQ_V:
 453             case INSTR_NE_V:
 454                 t[0] = t[1] = t[2] = TYPE_VECTOR;
 455                 break;
 456             case INSTR_EQ_S:
 457             case INSTR_NE_S:
 458                 t[0] = t[1] = TYPE_STRING;
 459                 break;
 460             case INSTR_STORE_F:
 461             case INSTR_STOREP_F:
 462                 t[2] = -1;
 463                 break;
 464             case INSTR_STORE_V:
 465                 t[0] = t[1] = TYPE_VECTOR; t[2] = -1;
 466                 break;
 467             case INSTR_STORE_S:
 468                 t[0] = t[1] = TYPE_STRING; t[2] = -1;
 469                 break;
 470             case INSTR_STORE_ENT:
 471                 t[0] = t[1] = TYPE_ENTITY; t[2] = -1;
 472                 break;
 473             case INSTR_STORE_FLD:
 474                 t[0] = t[1] = TYPE_FIELD; t[2] = -1;
 475                 break;
 476             case INSTR_STORE_FNC:
 477                 t[0] = t[1] = TYPE_FUNCTION; t[2] = -1;
 478                 break;
 479             case INSTR_STOREP_V:
 480                 t[0] = TYPE_VECTOR; t[1] = TYPE_ENTITY; t[2] = -1;
 481                 break;
 482             case INSTR_STOREP_S:
 483                 t[0] = TYPE_STRING; t[1] = TYPE_ENTITY; t[2] = -1;
 484                 break;
 485             case INSTR_STOREP_ENT:
 486                 t[0] = TYPE_ENTITY; t[1] = TYPE_ENTITY; t[2] = -1;
 487                 break;
 488             case INSTR_STOREP_FLD:
 489                 t[0] = TYPE_FIELD; t[1] = TYPE_ENTITY; t[2] = -1;
 490                 break;
 491             case INSTR_STOREP_FNC:
 492                 t[0] = TYPE_FUNCTION; t[1] = TYPE_ENTITY; t[2] = -1;
 493                 break;
 494         }
 495         if (t[0] >= 0) trace_print_global(prog, st->o1.u1, t[0]);
 496         else           printf("(none),          ");
 497         if (t[1] >= 0) trace_print_global(prog, st->o2.u1, t[1]);
 498         else           printf("(none),          ");
 499         if (t[2] >= 0) trace_print_global(prog, st->o3.u1, t[2]);
 500         else           printf("(none)");
 501         printf("\n");
 502     }
 503     fflush(stdout);
 504 }
 505
 506 static qcint prog_enterfunction(qc_program *prog, prog_section_function *func)
 507 {
 508     qc_exec_stack st;
 509     size_t p, parampos;
 510
 511     /* back up locals */
 512     st.localsp  = prog->localstack_count;
 513     st.stmt     = prog->statement;
 514     st.function = func;
 515
 516 #ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
 517     if (prog->stack_count)
 518     {
 519         prog_section_function *cur;
 520         cur = prog->stack[prog->stack_count-1].function;
 521         if (cur)
 522         {
 523             qcint *globals = prog->globals + cur->firstlocal;
 524             if (!qc_program_localstack_append(prog, globals, cur->locals))
 525             {
 526                 printf("out of memory\n");
 527                 exit(1);
 528             }
 529         }
 530     }
 531 #else
 532     {
 533         qcint *globals = prog->globals + func->firstlocal;
 534         if (!qc_program_localstack_append(prog, globals, func->locals))
 535         {
 536             printf("out of memory\n");
 537             exit(1);
 538         }
 539     }
 540 #endif
 541
 542     /* copy parameters */
 543     parampos = func->firstlocal;
 544     for (p = 0; p < func->nargs; ++p)
 545     {
 546         size_t s;
 547         for (s = 0; s < func->argsize[p]; ++s) {
 548             prog->globals[parampos] = prog->globals[OFS_PARM0 + 3*p + s];
 549             ++parampos;
 550         }
 551     }
 552
 553     if (!qc_program_stack_add(prog, st)) {
 554         printf("out of memory\n");
 555         exit(1);
 556     }
 557
 558     return func->entry;
 559 }
 560
 561 static qcint prog_leavefunction(qc_program *prog)
 562 {
 563     prog_section_function *prev = NULL;
 564     size_t oldsp;
 565
 566     qc_exec_stack st = prog->stack[prog->stack_count-1];
 567
 568 #ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
 569     if (prog->stack_count > 1) {
 570         prev  = prog->stack[prog->stack_count-2].function;
 571         oldsp = prog->stack[prog->stack_count-2].localsp;
 572     }
 573 #else
 574     prev  = prog->stack[prog->stack_count-1].function;
 575     oldsp = prog->stack[prog->stack_count-1].localsp;
 576 #endif
 577     if (prev) {
 578         qcint *globals = prog->globals + prev->firstlocal;
 579         memcpy(globals, prog->localstack + oldsp, prev->locals);
 580         if (!qc_program_localstack_resize(prog, oldsp)) {
 581             printf("out of memory\n");
 582             exit(1);
 583         }
 584     }
 585
 586     if (!qc_program_stack_remove(prog, prog->stack_count-1)) {
 587         printf("out of memory\n");
 588         exit(1);
 589     }
 590
 591     return st.stmt - 1; /* offset the ++st */
 592 }
 593
 594 bool prog_exec(qc_program *prog, prog_section_function *func, size_t flags, long maxjumps)
 595 {
 596     long jumpcount = 0;
 597     size_t oldxflags = prog->xflags;
 598     prog_section_statement *st;
 599
 600     prog->vmerror = 0;
 601     prog->xflags = flags;
 602
 603     st = prog->code + prog_enterfunction(prog, func);
 604     --st;
 605     switch (flags)
 606     {
 607         default:
 608         case 0:
 609         {
 610 #define QCVM_LOOP    1
 611 #define QCVM_PROFILE 0
 612 #define QCVM_TRACE   0
 613 #           include __FILE__
 614             break;
 615         }
 616         case (VMXF_TRACE):
 617         {
 618 #define QCVM_PROFILE 0
 619 #define QCVM_TRACE   1
 620 #           include __FILE__
 621             break;
 622         }
 623         case (VMXF_PROFILE):
 624         {
 625 #define QCVM_PROFILE 1
 626 #define QCVM_TRACE   0
 627 #           include __FILE__
 628             break;
 629         }
 630         case (VMXF_TRACE|VMXF_PROFILE):
 631         {
 632 #define QCVM_PROFILE 1
 633 #define QCVM_TRACE   1
 634 #           include __FILE__
 635             break;
 636         }
 637     };
 638
 639 cleanup:
 640     prog->xflags = oldxflags;
 641     prog->localstack_count = 0;
 642     prog->stack_count = 0;
 643     if (prog->vmerror)
 644         return false;
 645     return true;
 646 }
 647
 648 /***********************************************************************
 649  * main for when building the standalone executor
 650  */
 651
 652 #if defined(QCVM_EXECUTOR)
 653 #include <math.h>
 654
 655 const char *type_name[TYPE_COUNT] = {
 656     "void",
 657     "string",
 658     "float",
 659     "vector",
 660     "entity",
 661     "field",
 662     "function",
 663     "pointer",
 664 #if 0
 665     "integer",
 666 #endif
 667     "variant"
 668 };
 669
 670 bool        opts_debug    = false;
 671 bool        opts_memchk   = false;
 672
 673 typedef struct {
 674     int         vtype;
 675     const char *value;
 676 } qcvm_parameter;
 677
 678 VECTOR_MAKE(qcvm_parameter, main_params);
 679
 680 #define CheckArgs(num) do {                                                    \
 681     if (prog->argc != (num)) {                                                 \
 682         prog->vmerror++;                                                       \
 683         printf("ERROR: invalid number of arguments for %s: %i, expected %i\n", \
 684         __FUNCTION__, prog->argc, (num));                                      \
 685         return -1;                                                             \
 686     }                                                                          \
 687 } while (0)
 688
 689 #define GetGlobal(idx) ((qcany*)(prog->globals + (idx)))
 690 #define GetArg(num) GetGlobal(OFS_PARM0 + 3*(num))
 691 #define Return(any) *(GetGlobal(OFS_RETURN)) = (any)
 692
 693 static int qc_print(qc_program *prog)
 694 {
 695     size_t i;
 696     const char *laststr = NULL;
 697     for (i = 0; i < prog->argc; ++i) {
 698         qcany *str = (qcany*)(prog->globals + OFS_PARM0 + 3*i);
 699         printf("%s", (laststr = prog_getstring(prog, str->string)));
 700     }
 701     if (laststr && (prog->xflags & VMXF_TRACE)) {
 702         size_t len = strlen(laststr);
 703         if (!len || laststr[len-1] != '\n')
 704             printf("\n");
 705     }
 706     return 0;
 707 }
 708
 709 static int qc_error(qc_program *prog)
 710 {
 711     printf("*** VM raised an error:\n");
 712     qc_print(prog);
 713     prog->vmerror++;
 714     return -1;
 715 }
 716
 717 static int qc_ftos(qc_program *prog)
 718 {
 719     char buffer[512];
 720     qcany *num;
 721     qcany str;
 722     CheckArgs(1);
 723     num = GetArg(0);
 724     snprintf(buffer, sizeof(buffer), "%g", num->_float);
 725     str.string = prog_tempstring(prog, buffer);
 726     Return(str);
 727     return 0;
 728 }
 729
 730 static int qc_vtos(qc_program *prog)
 731 {
 732     char buffer[512];
 733     qcany *num;
 734     qcany str;
 735     CheckArgs(1);
 736     num = GetArg(0);
 737     snprintf(buffer, sizeof(buffer), "'%g %g %g'", num->vector[0], num->vector[1], num->vector[2]);
 738     str.string = prog_tempstring(prog, buffer);
 739     Return(str);
 740     return 0;
 741 }
 742
 743 static int qc_etos(qc_program *prog)
 744 {
 745     char buffer[512];
 746     qcany *num;
 747     qcany str;
 748     CheckArgs(1);
 749     num = GetArg(0);
 750     snprintf(buffer, sizeof(buffer), "%i", num->_int);
 751     str.string = prog_tempstring(prog, buffer);
 752     Return(str);
 753     return 0;
 754 }
 755
 756 static int qc_spawn(qc_program *prog)
 757 {
 758     qcany ent;
 759     CheckArgs(0);
 760     ent.edict = prog_spawn_entity(prog);
 761     Return(ent);
 762     return (ent.edict ? 0 : -1);
 763 }
 764
 765 static int qc_kill(qc_program *prog)
 766 {
 767     qcany *ent;
 768     CheckArgs(1);
 769     ent = GetArg(0);
 770     prog_free_entity(prog, ent->edict);
 771     return 0;
 772 }
 773
 774 static int qc_vlen(qc_program *prog)
 775 {
 776     qcany *vec, len;
 777     CheckArgs(1);
 778     vec = GetArg(0);
 779     len._float = sqrt(vec->vector[0] * vec->vector[0] +
 780                       vec->vector[1] * vec->vector[1] +
 781                       vec->vector[2] * vec->vector[2]);
 782     Return(len);
 783     return 0;
 784 }
 785
 786 static prog_builtin qc_builtins[] = {
 787     NULL,
 788     &qc_print, /*   1   */
 789     &qc_ftos,  /*   2   */
 790     &qc_spawn, /*   3   */
 791     &qc_kill,  /*   4   */
 792     &qc_vtos,  /*   5   */
 793     &qc_error, /*   6   */
 794     &qc_vlen,  /*   7   */
 795     &qc_etos   /*   8   */
 796 };
 797 static size_t qc_builtins_count = sizeof(qc_builtins) / sizeof(qc_builtins[0]);
 798
 799 static const char *arg0 = NULL;
 800
 801 void usage()
 802 {
 803     printf("usage: [-debug] %s file\n", arg0);
 804     exit(1);
 805 }
 806
 807 static void prog_main_setparams(qc_program *prog)
 808 {
 809     size_t i;
 810     qcany *arg;
 811
 812     for (i = 0; i < main_params_elements; ++i) {
 813         arg = GetGlobal(OFS_PARM0 + 3*i);
 814         arg->vector[0] = 0;
 815         arg->vector[1] = 0;
 816         arg->vector[2] = 0;
 817         switch (main_params_data[i].vtype) {
 818             case TYPE_VECTOR:
 819 #ifdef WIN32
 820                 (void)sscanf_s(main_params_data[i].value, " %f %f %f ",
 821                                &arg->vector[0],
 822                                &arg->vector[1],
 823                                &arg->vector[2]);
 824 #else
 825                 (void)sscanf(main_params_data[i].value, " %f %f %f ",
 826                              &arg->vector[0],
 827                              &arg->vector[1],
 828                              &arg->vector[2]);
 829 #endif
 830                 break;
 831             case TYPE_FLOAT:
 832                 arg->_float = atof(main_params_data[i].value);
 833                 break;
 834             case TYPE_STRING:
 835                 arg->string = prog_tempstring(prog, main_params_data[i].value);
 836                 break;
 837             default:
 838                 printf("error: unhandled parameter type: %i\n", main_params_data[i].vtype);
 839                 break;
 840         }
 841     }
 842 }
 843
 844 void prog_disasm_function(qc_program *prog, size_t id);
 845 int main(int argc, char **argv)
 846 {
 847     size_t      i;
 848     qcint       fnmain = -1;
 849     qc_program *prog;
 850     size_t      xflags = VMXF_DEFAULT;
 851     bool        opts_printfields = false;
 852     bool        opts_printdefs   = false;
 853     bool        opts_disasm      = false;
 854     bool        opts_info  = false;
 855
 856     arg0 = argv[0];
 857
 858     if (argc < 2)
 859         usage();
 860
 861     while (argc > 2) {
 862         if (!strcmp(argv[1], "-trace")) {
 863             --argc;
 864             ++argv;
 865             xflags |= VMXF_TRACE;
 866         }
 867         else if (!strcmp(argv[1], "-profile")) {
 868             --argc;
 869             ++argv;
 870             xflags |= VMXF_PROFILE;
 871         }
 872         else if (!strcmp(argv[1], "-info")) {
 873             --argc;
 874             ++argv;
 875             opts_info = true;
 876         }
 877         else if (!strcmp(argv[1], "-disasm")) {
 878             --argc;
 879             ++argv;
 880             opts_disasm = true;
 881         }
 882         else if (!strcmp(argv[1], "-printdefs")) {
 883             --argc;
 884             ++argv;
 885             opts_printdefs = true;
 886         }
 887         else if (!strcmp(argv[1], "-printfields")) {
 888             --argc;
 889             ++argv;
 890             opts_printfields = true;
 891         }
 892         else if (!strcmp(argv[1], "-vector") ||
 893                  !strcmp(argv[1], "-string") ||
 894                  !strcmp(argv[1], "-float") )
 895         {
 896             qcvm_parameter p;
 897             if (argv[1][1] == 'f')
 898                 p.vtype = TYPE_FLOAT;
 899             else if (argv[1][1] == 's')
 900                 p.vtype = TYPE_STRING;
 901             else if (argv[1][1] == 'v')
 902                 p.vtype = TYPE_VECTOR;
 903
 904             --argc;
 905             ++argv;
 906             if (argc < 3)
 907                 usage();
 908             p.value = argv[1];
 909
 910             if (main_params_add(p) < 0) {
 911                 if (main_params_data)
 912                     mem_d(main_params_data);
 913                 printf("cannot add parameter\n");
 914                 exit(1);
 915             }
 916             --argc;
 917             ++argv;
 918         }
 919         else
 920             usage();
 921     }
 922
 923
 924     prog = prog_load(argv[1]);
 925     if (!prog) {
 926         printf("failed to load program '%s'\n", argv[1]);
 927         exit(1);
 928     }
 929
 930     prog->builtins       = qc_builtins;
 931     prog->builtins_count = qc_builtins_count;
 932     prog->builtins_alloc = 0;
 933
 934     if (opts_info) {
 935         printf("Program's system-checksum = 0x%04x\n", (int)prog->crc16);
 936         printf("Entity field space: %i\n", (int)prog->entityfields);
 937     }
 938
 939     for (i = 1; i < prog->functions_count; ++i) {
 940         const char *name = prog_getstring(prog, prog->functions[i].name);
 941         /* printf("Found function: %s\n", name); */
 942         if (!strcmp(name, "main"))
 943             fnmain = (qcint)i;
 944     }
 945     if (opts_info) {
 946         prog_delete(prog);
 947         return 0;
 948     }
 949     if (opts_disasm) {
 950         for (i = 1; i < prog->functions_count; ++i)
 951             prog_disasm_function(prog, i);
 952         return 0;
 953     }
 954     if (opts_printdefs) {
 955         for (i = 0; i < prog->defs_count; ++i) {
 956             printf("Global: %8s %-16s at %u\n",
 957                    type_name[prog->defs[i].type & DEF_TYPEMASK],
 958                    prog_getstring(prog, prog->defs[i].name),
 959                    (unsigned int)prog->defs[i].offset);
 960         }
 961     }
 962     else if (opts_printfields) {
 963         for (i = 0; i < prog->fields_count; ++i) {
 964             printf("Field: %8s %-16s at %u\n",
 965                    type_name[prog->fields[i].type],
 966                    prog_getstring(prog, prog->fields[i].name),
 967                    (unsigned int)prog->fields[i].offset);
 968         }
 969     }
 970     else
 971     {
 972         if (fnmain > 0)
 973         {
 974             prog_main_setparams(prog);
 975             prog_exec(prog, &prog->functions[fnmain], xflags, VM_JUMPS_DEFAULT);
 976         }
 977         else
 978             printf("No main function found\n");
 979     }
 980
 981     prog_delete(prog);
 982     return 0;
 983 }
 984
 985 void prog_disasm_function(qc_program *prog, size_t id)
 986 {
 987     prog_section_function *fdef = prog->functions + id;
 988     prog_section_statement *st;
 989
 990     if (fdef->entry < 0) {
 991         printf("FUNCTION \"%s\" = builtin #%i\n", prog_getstring(prog, fdef->name), (int)-fdef->entry);
 992         return;
 993     }
 994     else
 995         printf("FUNCTION \"%s\"\n", prog_getstring(prog, fdef->name));
 996
 997     st = prog->code + fdef->entry;
 998     while (st->opcode != AINSTR_END) {
 999         prog_print_statement(prog, st);
1000         ++st;
1001     }
1002 }
1003 #endif
1004 #else /* !QCVM_LOOP */
1005 /*
1006  * Everything from here on is not including into the compilation of the
1007  * executor.  This is simply code that is #included via #include __FILE__
1008  * see when QCVM_LOOP is defined, the rest of the code above do not get
1009  * re-included.  So this really just acts like one large macro, but it
1010  * sort of isn't, which makes it nicer looking.
1011  */
1012
1013 #define OPA ( (qcany*) (prog->globals + st->o1.u1) )
1014 #define OPB ( (qcany*) (prog->globals + st->o2.u1) )
1015 #define OPC ( (qcany*) (prog->globals + st->o3.u1) )
1016
1017 #define GLOBAL(x) ( (qcany*) (prog->globals + (x)) )
1018
1019 /* to be consistent with current darkplaces behaviour */
1020 #if !defined(FLOAT_IS_TRUE_FOR_INT)
1021 #   define FLOAT_IS_TRUE_FOR_INT(x) ( (x) & 0x7FFFFFFF )
1022 #endif
1023
1024 while (1) {
1025         prog_section_function  *newf;
1026         qcany          *ed;
1027         qcany          *ptr;
1028
1029     ++st;
1030
1031 #if QCVM_PROFILE
1032     prog->profile[st - prog->code]++;
1033 #endif
1034
1035 #if QCVM_TRACE
1036     prog_print_statement(prog, st);
1037 #endif
1038
1039     switch (st->opcode)
1040     {
1041         default:
1042             qcvmerror(prog, "Illegal instruction in %s\n", prog->filename);
1043             goto cleanup;
1044
1045                 case INSTR_DONE:
1046                 case INSTR_RETURN:
1047                         /* TODO: add instruction count to function profile count */
1048                         GLOBAL(OFS_RETURN)->ivector[0] = OPA->ivector[0];
1049                         GLOBAL(OFS_RETURN)->ivector[1] = OPA->ivector[1];
1050                         GLOBAL(OFS_RETURN)->ivector[2] = OPA->ivector[2];
1051
1052             st = prog->code + prog_leavefunction(prog);
1053             if (!prog->stack_count)
1054                 goto cleanup;
1055
1056             break;
1057
1058                 case INSTR_MUL_F:
1059                         OPC->_float = OPA->_float * OPB->_float;
1060                         break;
1061                 case INSTR_MUL_V:
1062                         OPC->_float = OPA->vector[0]*OPB->vector[0] +
1063                                       OPA->vector[1]*OPB->vector[1] +
1064                                       OPA->vector[2]*OPB->vector[2];
1065                         break;
1066                 case INSTR_MUL_FV:
1067                         OPC->vector[0] = OPA->_float * OPB->vector[0];
1068                         OPC->vector[1] = OPA->_float * OPB->vector[1];
1069                         OPC->vector[2] = OPA->_float * OPB->vector[2];
1070                         break;
1071                 case INSTR_MUL_VF:
1072                         OPC->vector[0] = OPB->_float * OPA->vector[0];
1073                         OPC->vector[1] = OPB->_float * OPA->vector[1];
1074                         OPC->vector[2] = OPB->_float * OPA->vector[2];
1075                         break;
1076                 case INSTR_DIV_F:
1077                         if (OPB->_float != 0.0f)
1078                                 OPC->_float = OPA->_float / OPB->_float;
1079                         else
1080                                 OPC->_float = 0;
1081                         break;
1082
1083                 case INSTR_ADD_F:
1084                         OPC->_float = OPA->_float + OPB->_float;
1085                         break;
1086                 case INSTR_ADD_V:
1087                         OPC->vector[0] = OPA->vector[0] + OPB->vector[0];
1088                         OPC->vector[1] = OPA->vector[1] + OPB->vector[1];
1089                         OPC->vector[2] = OPA->vector[2] + OPB->vector[2];
1090                         break;
1091                 case INSTR_SUB_F:
1092                         OPC->_float = OPA->_float - OPB->_float;
1093                         break;
1094                 case INSTR_SUB_V:
1095                         OPC->vector[0] = OPA->vector[0] - OPB->vector[0];
1096                         OPC->vector[1] = OPA->vector[1] - OPB->vector[1];
1097                         OPC->vector[2] = OPA->vector[2] - OPB->vector[2];
1098                         break;
1099
1100                 case INSTR_EQ_F:
1101                         OPC->_float = (OPA->_float == OPB->_float);
1102                         break;
1103                 case INSTR_EQ_V:
1104                         OPC->_float = ((OPA->vector[0] == OPB->vector[0]) &&
1105                                            (OPA->vector[1] == OPB->vector[1]) &&
1106                                            (OPA->vector[2] == OPB->vector[2]) );
1107                         break;
1108                 case INSTR_EQ_S:
1109                         OPC->_float = !strcmp(prog_getstring(prog, OPA->string),
1110                                               prog_getstring(prog, OPB->string));
1111                         break;
1112                 case INSTR_EQ_E:
1113                         OPC->_float = (OPA->_int == OPB->_int);
1114                         break;
1115                 case INSTR_EQ_FNC:
1116                         OPC->_float = (OPA->function == OPB->function);
1117                         break;
1118                 case INSTR_NE_F:
1119                         OPC->_float = (OPA->_float != OPB->_float);
1120                         break;
1121                 case INSTR_NE_V:
1122                         OPC->_float = ((OPA->vector[0] != OPB->vector[0]) ||
1123                                        (OPA->vector[1] != OPB->vector[1]) ||
1124                                        (OPA->vector[2] != OPB->vector[2]) );
1125                         break;
1126                 case INSTR_NE_S:
1127                         OPC->_float = !!strcmp(prog_getstring(prog, OPA->string),
1128                                                prog_getstring(prog, OPB->string));
1129                         break;
1130                 case INSTR_NE_E:
1131                         OPC->_float = (OPA->_int != OPB->_int);
1132                         break;
1133                 case INSTR_NE_FNC:
1134                         OPC->_float = (OPA->function != OPB->function);
1135                         break;
1136
1137                 case INSTR_LE:
1138                         OPC->_float = (OPA->_float <= OPB->_float);
1139                         break;
1140                 case INSTR_GE:
1141                         OPC->_float = (OPA->_float >= OPB->_float);
1142                         break;
1143                 case INSTR_LT:
1144                         OPC->_float = (OPA->_float < OPB->_float);
1145                         break;
1146                 case INSTR_GT:
1147                         OPC->_float = (OPA->_float > OPB->_float);
1148                         break;
1149
1150                 case INSTR_LOAD_F:
1151                 case INSTR_LOAD_S:
1152                 case INSTR_LOAD_FLD:
1153                 case INSTR_LOAD_ENT:
1154                 case INSTR_LOAD_FNC:
1155                         if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1156                             qcvmerror(prog, "progs `%s` attempted to read an out of bounds entity", prog->filename);
1157                                 goto cleanup;
1158                         }
1159                         if ((unsigned int)(OPB->_int) >= (unsigned int)(prog->entityfields)) {
1160                                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1161                                           prog->filename,
1162                                           OPB->_int);
1163                                 goto cleanup;
1164                         }
1165                         ed = prog_getedict(prog, OPA->edict);
1166                         OPC->_int = ((qcany*)( ((qcint*)ed) + OPB->_int ))->_int;
1167                         break;
1168                 case INSTR_LOAD_V:
1169                         if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1170                             qcvmerror(prog, "progs `%s` attempted to read an out of bounds entity", prog->filename);
1171                                 goto cleanup;
1172                         }
1173                         if (OPB->_int < 0 || OPB->_int + 3 > prog->entityfields)
1174                         {
1175                                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1176                                           prog->filename,
1177                                           OPB->_int + 2);
1178                                 goto cleanup;
1179                         }
1180                         ed = prog_getedict(prog, OPA->edict);
1181                         OPC->ivector[0] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[0];
1182                         OPC->ivector[1] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[1];
1183                         OPC->ivector[2] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[2];
1184                         break;
1185
1186                 case INSTR_ADDRESS:
1187                         if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1188                                 qcvmerror(prog, "prog `%s` attempted to address an out of bounds entity %i", prog->filename, OPA->edict);
1189                                 goto cleanup;
1190                         }
1191                         if ((unsigned int)(OPB->_int) >= (unsigned int)(prog->entityfields))
1192                         {
1193                                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1194                                           prog->filename,
1195                                           OPB->_int);
1196                                 goto cleanup;
1197                         }
1198
1199                         ed = prog_getedict(prog, OPA->edict);
1200                         OPC->_int = ((qcint*)ed) - prog->entitydata;
1201                         OPC->_int += OPB->_int;
1202                         break;
1203
1204                 case INSTR_STORE_F:
1205                 case INSTR_STORE_S:
1206                 case INSTR_STORE_ENT:
1207                 case INSTR_STORE_FLD:
1208                 case INSTR_STORE_FNC:
1209                         OPB->_int = OPA->_int;
1210                         break;
1211                 case INSTR_STORE_V:
1212                         OPB->ivector[0] = OPA->ivector[0];
1213                         OPB->ivector[1] = OPA->ivector[1];
1214                         OPB->ivector[2] = OPA->ivector[2];
1215                         break;
1216
1217                 case INSTR_STOREP_F:
1218                 case INSTR_STOREP_S:
1219                 case INSTR_STOREP_ENT:
1220                 case INSTR_STOREP_FLD:
1221                 case INSTR_STOREP_FNC:
1222                         if (OPB->_int < 0 || OPB->_int >= prog->entitydata_count) {
1223                                 qcvmerror(prog, "`%s` attempted to write to an out of bounds edict (%i)", prog->filename, OPB->_int);
1224                                 goto cleanup;
1225                         }
1226                         if (OPB->_int < prog->entityfields && !prog->allowworldwrites)
1227                                 qcvmerror(prog, "`%s` tried to assign to world.%s (field %i)\n",
1228                                           prog->filename,
1229                                           prog_getstring(prog, prog_entfield(prog, OPB->_int)->name),
1230                                           OPB->_int);
1231                         ptr = (qcany*)(prog->entitydata + OPB->_int);
1232                         ptr->_int = OPA->_int;
1233                         break;
1234                 case INSTR_STOREP_V:
1235                         if (OPB->_int < 0 || OPB->_int + 2 >= prog->entitydata_count) {
1236                                 qcvmerror(prog, "`%s` attempted to write to an out of bounds edict (%i)", prog->filename, OPB->_int);
1237                                 goto cleanup;
1238                         }
1239                         if (OPB->_int < prog->entityfields && !prog->allowworldwrites)
1240                                 qcvmerror(prog, "`%s` tried to assign to world.%s (field %i)\n",
1241                                           prog->filename,
1242                                           prog_getstring(prog, prog_entfield(prog, OPB->_int)->name),
1243                                           OPB->_int);
1244                         ptr = (qcany*)(prog->entitydata + OPB->_int);
1245                         ptr->ivector[0] = OPA->ivector[0];
1246                         ptr->ivector[1] = OPA->ivector[1];
1247                         ptr->ivector[2] = OPA->ivector[2];
1248                         break;
1249
1250                 case INSTR_NOT_F:
1251                         OPC->_float = !FLOAT_IS_TRUE_FOR_INT(OPA->_int);
1252                         break;
1253                 case INSTR_NOT_V:
1254                         OPC->_float = !OPA->vector[0] &&
1255                                       !OPA->vector[1] &&
1256                                       !OPA->vector[2];
1257                         break;
1258                 case INSTR_NOT_S:
1259                         OPC->_float = !OPA->string ||
1260                                       !*prog_getstring(prog, OPA->string);
1261                         break;
1262                 case INSTR_NOT_ENT:
1263                         OPC->_float = (OPA->edict == 0);
1264                         break;
1265                 case INSTR_NOT_FNC:
1266                         OPC->_float = !OPA->function;
1267                         break;
1268
1269                 case INSTR_IF:
1270                     /* this is consistent with darkplaces' behaviour */
1271                         if(FLOAT_IS_TRUE_FOR_INT(OPA->_int))
1272                         {
1273                                 st += st->o2.s1 - 1;    /* offset the s++ */
1274                                 if (++jumpcount >= maxjumps)
1275                                         qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1276                         }
1277                         break;
1278                 case INSTR_IFNOT:
1279                         if(!FLOAT_IS_TRUE_FOR_INT(OPA->_int))
1280                         {
1281                                 st += st->o2.s1 - 1;    /* offset the s++ */
1282                                 if (++jumpcount >= maxjumps)
1283                                         qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1284                         }
1285                         break;
1286
1287                 case INSTR_CALL0:
1288                 case INSTR_CALL1:
1289                 case INSTR_CALL2:
1290                 case INSTR_CALL3:
1291                 case INSTR_CALL4:
1292                 case INSTR_CALL5:
1293                 case INSTR_CALL6:
1294                 case INSTR_CALL7:
1295                 case INSTR_CALL8:
1296                         prog->argc = st->opcode - INSTR_CALL0;
1297                         if (!OPA->function)
1298                                 qcvmerror(prog, "NULL function in `%s`", prog->filename);
1299
1300                         if(!OPA->function || OPA->function >= (unsigned int)prog->functions_count)
1301                         {
1302                                 qcvmerror(prog, "CALL outside the program in `%s`", prog->filename);
1303                                 goto cleanup;
1304                         }
1305
1306                         newf = &prog->functions[OPA->function];
1307                         newf->profile++;
1308
1309                         prog->statement = (st - prog->code) + 1;
1310
1311                         if (newf->entry < 0)
1312                         {
1313                                 /* negative statements are built in functions */
1314                                 int builtinnumber = -newf->entry;
1315                                 if (builtinnumber < prog->builtins_count && prog->builtins[builtinnumber])
1316                                         prog->builtins[builtinnumber](prog);
1317                                 else
1318                                         qcvmerror(prog, "No such builtin #%i in %s! Try updating your gmqcc sources",
1319                                                   builtinnumber, prog->filename);
1320                         }
1321                         else
1322                                 st = prog->code + prog_enterfunction(prog, newf) - 1; /* offset st++ */
1323                         if (prog->vmerror)
1324                                 goto cleanup;
1325                         break;
1326
1327                 case INSTR_STATE:
1328                     qcvmerror(prog, "`%s` tried to execute a STATE operation", prog->filename);
1329                         break;
1330
1331                 case INSTR_GOTO:
1332                         st += st->o1.s1 - 1;    /* offset the s++ */
1333                         if (++jumpcount == 10000000)
1334                                         qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1335                         break;
1336
1337                 case INSTR_AND:
1338                         OPC->_float = FLOAT_IS_TRUE_FOR_INT(OPA->_int) &&
1339                                       FLOAT_IS_TRUE_FOR_INT(OPB->_int);
1340                         break;
1341                 case INSTR_OR:
1342                         OPC->_float = FLOAT_IS_TRUE_FOR_INT(OPA->_int) ||
1343                                       FLOAT_IS_TRUE_FOR_INT(OPB->_int);
1344                         break;
1345
1346                 case INSTR_BITAND:
1347                         OPC->_float = ((int)OPA->_float) & ((int)OPB->_float);
1348                         break;
1349                 case INSTR_BITOR:
1350                         OPC->_float = ((int)OPA->_float) | ((int)OPB->_float);
1351                         break;
1352     }
1353 }
1354
1355 #undef QCVM_PROFILE
1356 #undef QCVM_TRACE
1357 #endif /* !QCVM_LOOP */