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 MEM_VEC_FUNCTIONS(qc_program,   const char*, function_stack)
  54
  55 static void loaderror(const char *fmt, ...)
  56 {
  57     int     err = errno;
  58     va_list ap;
  59     va_start(ap, fmt);
  60     vprintf(fmt, ap);
  61     va_end(ap);
  62     printf(": %s\n", strerror(err));
  63 }
  64
  65 static void qcvmerror(qc_program *prog, const char *fmt, ...)
  66 {
  67     va_list ap;
  68
  69     prog->vmerror++;
  70
  71     va_start(ap, fmt);
  72     vprintf(fmt, ap);
  73     va_end(ap);
  74     putchar('\n');
  75 }
  76
  77 qc_program* prog_load(const char *filename)
  78 {
  79     qc_program *prog;
  80     prog_header header;
  81     size_t      i;
  82     FILE *file;
  83
  84     file = util_fopen(filename, "rb");
  85     if (!file)
  86         return NULL;
  87
  88     if (fread(&header, sizeof(header), 1, file) != 1) {
  89         loaderror("failed to read header from '%s'", filename);
  90         fclose(file);
  91         return NULL;
  92     }
  93
  94     if (header.version != 6) {
  95         loaderror("header says this is a version %i progs, we need version 6\n", header.version);
  96         fclose(file);
  97         return NULL;
  98     }
  99
 100     prog = (qc_program*)mem_a(sizeof(qc_program));
 101     if (!prog) {
 102         fclose(file);
 103         printf("failed to allocate program data\n");
 104         return NULL;
 105     }
 106     memset(prog, 0, sizeof(*prog));
 107
 108     prog->entityfields = header.entfield;
 109     prog->crc16 = header.crc16;
 110
 111     prog->filename = util_strdup(filename);
 112     if (!prog->filename) {
 113         loaderror("failed to store program name");
 114         goto error;
 115     }
 116
 117 #define read_data(hdrvar, progvar, type)                                         \
 118     if (fseek(file, header.hdrvar.offset, SEEK_SET) != 0) {                      \
 119         loaderror("seek failed");                                                \
 120         goto error;                                                              \
 121     }                                                                            \
 122     prog->progvar##_alloc = header.hdrvar.length;                                \
 123     prog->progvar##_count = header.hdrvar.length;                                \
 124     prog->progvar = (type*)mem_a(header.hdrvar.length * sizeof(*prog->progvar)); \
 125     if (!prog->progvar)                                                          \
 126         goto error;                                                              \
 127     if (fread(prog->progvar, sizeof(*prog->progvar), header.hdrvar.length, file) \
 128         != header.hdrvar.length) {                                               \
 129         loaderror("read failed");                                                \
 130         goto error;                                                              \
 131     }
 132 #define read_data1(x, y) read_data(x, x, y)
 133
 134     read_data (statements, code, prog_section_statement);
 135     read_data1(defs,             prog_section_def);
 136     read_data1(fields,           prog_section_def);
 137     read_data1(functions,        prog_section_function);
 138     read_data1(strings,          char);
 139     read_data1(globals,          qcint);
 140
 141     fclose(file);
 142
 143     /* profile counters */
 144     if (!qc_program_profile_resize(prog, prog->code_count))
 145         goto error;
 146
 147     /* Add tempstring area */
 148     prog->tempstring_start = prog->strings_count;
 149     prog->tempstring_at    = prog->strings_count;
 150     if (!qc_program_strings_resize(prog, prog->strings_count + 16*1024))
 151         goto error;
 152
 153     /* spawn the world entity */
 154     if (!qc_program_entitypool_add(prog, true)) {
 155         loaderror("failed to allocate world entity\n");
 156         goto error;
 157     }
 158     for (i = 0; i < prog->entityfields; ++i) {
 159         if (!qc_program_entitydata_add(prog, 0)) {
 160             loaderror("failed to allocate world data\n");
 161             goto error;
 162         }
 163     }
 164     prog->entities = 1;
 165
 166     return prog;
 167
 168 error:
 169     if (prog->filename)   mem_d(prog->filename);
 170     if (prog->code)       mem_d(prog->code);
 171     if (prog->defs)       mem_d(prog->defs);
 172     if (prog->fields)     mem_d(prog->fields);
 173     if (prog->functions)  mem_d(prog->functions);
 174     if (prog->strings)    mem_d(prog->strings);
 175     if (prog->globals)    mem_d(prog->globals);
 176     if (prog->entitydata) mem_d(prog->entitydata);
 177     if (prog->entitypool) mem_d(prog->entitypool);
 178     mem_d(prog);
 179     return NULL;
 180 }
 181
 182 void prog_delete(qc_program *prog)
 183 {
 184     if (prog->filename) mem_d(prog->filename);
 185     MEM_VECTOR_CLEAR(prog, code);
 186     MEM_VECTOR_CLEAR(prog, defs);
 187     MEM_VECTOR_CLEAR(prog, fields);
 188     MEM_VECTOR_CLEAR(prog, functions);
 189     MEM_VECTOR_CLEAR(prog, strings);
 190     MEM_VECTOR_CLEAR(prog, globals);
 191     MEM_VECTOR_CLEAR(prog, entitydata);
 192     MEM_VECTOR_CLEAR(prog, entitypool);
 193     MEM_VECTOR_CLEAR(prog, localstack);
 194     MEM_VECTOR_CLEAR(prog, stack);
 195     MEM_VECTOR_CLEAR(prog, profile);
 196
 197     if (prog->builtins_alloc) {
 198         MEM_VECTOR_CLEAR(prog, builtins);
 199     }
 200     /* otherwise the builtins were statically allocated */
 201     mem_d(prog);
 202 }
 203
 204 /***********************************************************************
 205  * VM code
 206  */
 207
 208 char* prog_getstring(qc_program *prog, qcint str)
 209 {
 210     if (str < 0 || str >= prog->strings_count)
 211         return "<<<invalid string>>>";
 212     return prog->strings + str;
 213 }
 214
 215 prog_section_def* prog_entfield(qc_program *prog, qcint off)
 216 {
 217     size_t i;
 218     for (i = 0; i < prog->fields_count; ++i) {
 219         if (prog->fields[i].offset == off)
 220             return (prog->fields + i);
 221     }
 222     return NULL;
 223 }
 224
 225 prog_section_def* prog_getdef(qc_program *prog, qcint off)
 226 {
 227     size_t i;
 228     for (i = 0; i < prog->defs_count; ++i) {
 229         if (prog->defs[i].offset == off)
 230             return (prog->defs + i);
 231     }
 232     return NULL;
 233 }
 234
 235 qcany* prog_getedict(qc_program *prog, qcint e)
 236 {
 237     if (e >= prog->entitypool_count) {
 238         prog->vmerror++;
 239         printf("Accessing out of bounds edict %i\n", (int)e);
 240         e = 0;
 241     }
 242     return (qcany*)(prog->entitydata + (prog->entityfields * e));
 243 }
 244
 245 qcint prog_spawn_entity(qc_program *prog)
 246 {
 247     char  *data;
 248     size_t i;
 249     qcint  e;
 250     for (e = 0; e < (qcint)prog->entitypool_count; ++e) {
 251         if (!prog->entitypool[e]) {
 252             data = (char*)(prog->entitydata + (prog->entityfields * e));
 253             memset(data, 0, prog->entityfields * sizeof(qcint));
 254             return e;
 255         }
 256     }
 257     if (!qc_program_entitypool_add(prog, true)) {
 258         prog->vmerror++;
 259         printf("Failed to allocate entity\n");
 260         return 0;
 261     }
 262     prog->entities++;
 263     for (i = 0; i < prog->entityfields; ++i) {
 264         if (!qc_program_entitydata_add(prog, 0)) {
 265             printf("Failed to allocate entity\n");
 266             return 0;
 267         }
 268     }
 269     data = (char*)(prog->entitydata + (prog->entityfields * e));
 270     memset(data, 0, prog->entityfields * sizeof(qcint));
 271     return e;
 272 }
 273
 274 void prog_free_entity(qc_program *prog, qcint e)
 275 {
 276     if (!e) {
 277         prog->vmerror++;
 278         printf("Trying to free world entity\n");
 279         return;
 280     }
 281     if (e >= prog->entitypool_count) {
 282         prog->vmerror++;
 283         printf("Trying to free out of bounds entity\n");
 284         return;
 285     }
 286     if (!prog->entitypool[e]) {
 287         prog->vmerror++;
 288         printf("Double free on entity\n");
 289         return;
 290     }
 291     prog->entitypool[e] = false;
 292 }
 293
 294 qcint prog_tempstring(qc_program *prog, const char *_str)
 295 {
 296     /* we don't access it, but the macro-generated functions don't use
 297      * const
 298      */
 299     char *str = (char*)_str;
 300
 301     size_t len = strlen(str);
 302     size_t at = prog->tempstring_at;
 303
 304     /* when we reach the end we start over */
 305     if (at + len >= prog->strings_count)
 306         at = prog->tempstring_start;
 307
 308     /* when it doesn't fit, reallocate */
 309     if (at + len >= prog->strings_count)
 310     {
 311         prog->strings_count = at;
 312         if (!qc_program_strings_append(prog, str, len+1)) {
 313             prog->vmerror = VMERR_TEMPSTRING_ALLOC;
 314             return 0;
 315         }
 316         return at;
 317     }
 318
 319     /* when it fits, just copy */
 320     memcpy(prog->strings + at, str, len+1);
 321     prog->tempstring_at += len+1;
 322     return at;
 323 }
 324
 325 static int print_escaped_string(const char *str, size_t maxlen)
 326 {
 327     int len = 2;
 328     putchar('"');
 329     --maxlen; /* because we're lazy and have escape sequences */
 330     while (*str) {
 331         if (len >= maxlen) {
 332             putchar('.');
 333             putchar('.');
 334             putchar('.');
 335             len += 3;
 336             break;
 337         }
 338         switch (*str) {
 339             case '\a': len += 2; putchar('\\'); putchar('a'); break;
 340             case '\b': len += 2; putchar('\\'); putchar('b'); break;
 341             case '\r': len += 2; putchar('\\'); putchar('r'); break;
 342             case '\n': len += 2; putchar('\\'); putchar('n'); break;
 343             case '\t': len += 2; putchar('\\'); putchar('t'); break;
 344             case '\f': len += 2; putchar('\\'); putchar('f'); break;
 345             case '\v': len += 2; putchar('\\'); putchar('v'); break;
 346             case '\\': len += 2; putchar('\\'); putchar('\\'); break;
 347             case '"':  len += 2; putchar('\\'); putchar('"'); break;
 348             default:
 349                 ++len;
 350                 putchar(*str);
 351                 break;
 352         }
 353         ++str;
 354     }
 355     putchar('"');
 356     return len;
 357 }
 358
 359 static void trace_print_global(qc_program *prog, unsigned int glob, int vtype)
 360 {
 361     static char spaces[28+1] = "                            ";
 362     prog_section_def *def;
 363     qcany    *value;
 364     int       len;
 365
 366     if (!glob) {
 367         len = printf("<null>,");
 368         goto done;
 369     }
 370
 371     def = prog_getdef(prog, glob);
 372     value = (qcany*)(&prog->globals[glob]);
 373
 374     if (def) {
 375         const char *name = prog_getstring(prog, def->name);
 376         if (name[0] == '#')
 377             len = printf("$");
 378         else
 379             len = printf("%s ", name);
 380         vtype = def->type & DEF_TYPEMASK;
 381     }
 382     else
 383         len = printf("[@%u] ", glob);
 384
 385     switch (vtype) {
 386         case TYPE_VOID:
 387         case TYPE_ENTITY:
 388         case TYPE_FIELD:
 389         case TYPE_FUNCTION:
 390         case TYPE_POINTER:
 391             len += printf("(%i),", value->_int);
 392             break;
 393         case TYPE_VECTOR:
 394             len += printf("'%g %g %g',", value->vector[0],
 395                                          value->vector[1],
 396                                          value->vector[2]);
 397             break;
 398         case TYPE_STRING:
 399             len += print_escaped_string(prog_getstring(prog, value->string), sizeof(spaces)-len-5);
 400             len += printf(",");
 401             /* len += printf("\"%s\",", prog_getstring(prog, value->string)); */
 402             break;
 403         case TYPE_FLOAT:
 404         default:
 405             len += printf("%g,", value->_float);
 406             break;
 407     }
 408 done:
 409     if (len < sizeof(spaces)-1) {
 410         spaces[sizeof(spaces)-1-len] = 0;
 411         printf(spaces);
 412         spaces[sizeof(spaces)-1-len] = ' ';
 413     }
 414 }
 415
 416 static void prog_print_statement(qc_program *prog, prog_section_statement *st)
 417 {
 418     if (st->opcode >= (sizeof(asm_instr)/sizeof(asm_instr[0]))) {
 419         printf("<illegal instruction %d>\n", st->opcode);
 420         return;
 421     }
 422     if ((prog->xflags & VMXF_TRACE) && prog->function_stack_count) {
 423         size_t i;
 424         for (i = 0; i < prog->function_stack_count; ++i)
 425             printf("->");
 426         printf("%s:", prog->function_stack[prog->function_stack_count-1]);
 427     }
 428     printf(" <> %-12s", asm_instr[st->opcode].m);
 429     if (st->opcode >= INSTR_IF &&
 430         st->opcode <= INSTR_IFNOT)
 431     {
 432         trace_print_global(prog, st->o1.u1, TYPE_FLOAT);
 433         printf("%d\n", st->o2.s1);
 434     }
 435     else if (st->opcode >= INSTR_CALL0 &&
 436              st->opcode <= INSTR_CALL8)
 437     {
 438         trace_print_global(prog, st->o1.u1, TYPE_FUNCTION);
 439         printf("\n");
 440     }
 441     else if (st->opcode == INSTR_GOTO)
 442     {
 443         printf("%i\n", st->o1.s1);
 444     }
 445     else
 446     {
 447         int t[3] = { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT };
 448         switch (st->opcode)
 449         {
 450             case INSTR_MUL_FV:
 451                 t[1] = t[2] = TYPE_VECTOR;
 452                 break;
 453             case INSTR_MUL_VF:
 454                 t[0] = t[2] = TYPE_VECTOR;
 455                 break;
 456             case INSTR_MUL_V:
 457                 t[0] = t[1] = TYPE_VECTOR;
 458                 break;
 459             case INSTR_ADD_V:
 460             case INSTR_SUB_V:
 461             case INSTR_EQ_V:
 462             case INSTR_NE_V:
 463                 t[0] = t[1] = t[2] = TYPE_VECTOR;
 464                 break;
 465             case INSTR_EQ_S:
 466             case INSTR_NE_S:
 467                 t[0] = t[1] = TYPE_STRING;
 468                 break;
 469             case INSTR_STORE_F:
 470             case INSTR_STOREP_F:
 471                 t[2] = -1;
 472                 break;
 473             case INSTR_STORE_V:
 474                 t[0] = t[1] = TYPE_VECTOR; t[2] = -1;
 475                 break;
 476             case INSTR_STORE_S:
 477                 t[0] = t[1] = TYPE_STRING; t[2] = -1;
 478                 break;
 479             case INSTR_STORE_ENT:
 480                 t[0] = t[1] = TYPE_ENTITY; t[2] = -1;
 481                 break;
 482             case INSTR_STORE_FLD:
 483                 t[0] = t[1] = TYPE_FIELD; t[2] = -1;
 484                 break;
 485             case INSTR_STORE_FNC:
 486                 t[0] = t[1] = TYPE_FUNCTION; t[2] = -1;
 487                 break;
 488             case INSTR_STOREP_V:
 489                 t[0] = TYPE_VECTOR; t[1] = TYPE_ENTITY; t[2] = -1;
 490                 break;
 491             case INSTR_STOREP_S:
 492                 t[0] = TYPE_STRING; t[1] = TYPE_ENTITY; t[2] = -1;
 493                 break;
 494             case INSTR_STOREP_ENT:
 495                 t[0] = TYPE_ENTITY; t[1] = TYPE_ENTITY; t[2] = -1;
 496                 break;
 497             case INSTR_STOREP_FLD:
 498                 t[0] = TYPE_FIELD; t[1] = TYPE_ENTITY; t[2] = -1;
 499                 break;
 500             case INSTR_STOREP_FNC:
 501                 t[0] = TYPE_FUNCTION; t[1] = TYPE_ENTITY; t[2] = -1;
 502                 break;
 503         }
 504         if (t[0] >= 0) trace_print_global(prog, st->o1.u1, t[0]);
 505         else           printf("(none),          ");
 506         if (t[1] >= 0) trace_print_global(prog, st->o2.u1, t[1]);
 507         else           printf("(none),          ");
 508         if (t[2] >= 0) trace_print_global(prog, st->o3.u1, t[2]);
 509         else           printf("(none)");
 510         printf("\n");
 511     }
 512     fflush(stdout);
 513 }
 514
 515 static qcint prog_enterfunction(qc_program *prog, prog_section_function *func)
 516 {
 517     qc_exec_stack st;
 518     size_t p, parampos;
 519
 520     /* back up locals */
 521     st.localsp  = prog->localstack_count;
 522     st.stmt     = prog->statement;
 523     st.function = func;
 524
 525     if (prog->xflags & VMXF_TRACE) {
 526         (void)!qc_program_function_stack_add(prog, prog_getstring(prog, func->name));
 527     }
 528
 529 #ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
 530     if (prog->stack_count)
 531     {
 532         prog_section_function *cur;
 533         cur = prog->stack[prog->stack_count-1].function;
 534         if (cur)
 535         {
 536             qcint *globals = prog->globals + cur->firstlocal;
 537             if (!qc_program_localstack_append(prog, globals, cur->locals))
 538             {
 539                 printf("out of memory\n");
 540                 exit(1);
 541             }
 542         }
 543     }
 544 #else
 545     {
 546         qcint *globals = prog->globals + func->firstlocal;
 547         if (!qc_program_localstack_append(prog, globals, func->locals))
 548         {
 549             printf("out of memory\n");
 550             exit(1);
 551         }
 552     }
 553 #endif
 554
 555     /* copy parameters */
 556     parampos = func->firstlocal;
 557     for (p = 0; p < func->nargs; ++p)
 558     {
 559         size_t s;
 560         for (s = 0; s < func->argsize[p]; ++s) {
 561             prog->globals[parampos] = prog->globals[OFS_PARM0 + 3*p + s];
 562             ++parampos;
 563         }
 564     }
 565
 566     if (!qc_program_stack_add(prog, st)) {
 567         printf("out of memory\n");
 568         exit(1);
 569     }
 570
 571     return func->entry;
 572 }
 573
 574 static qcint prog_leavefunction(qc_program *prog)
 575 {
 576     prog_section_function *prev = NULL;
 577     size_t oldsp;
 578
 579     qc_exec_stack st = prog->stack[prog->stack_count-1];
 580
 581     if (prog->xflags & VMXF_TRACE) {
 582         if (prog->function_stack_count)
 583             prog->function_stack_count--;
 584     }
 585
 586 #ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
 587     if (prog->stack_count > 1) {
 588         prev  = prog->stack[prog->stack_count-2].function;
 589         oldsp = prog->stack[prog->stack_count-2].localsp;
 590     }
 591 #else
 592     prev  = prog->stack[prog->stack_count-1].function;
 593     oldsp = prog->stack[prog->stack_count-1].localsp;
 594 #endif
 595     if (prev) {
 596         qcint *globals = prog->globals + prev->firstlocal;
 597         memcpy(globals, prog->localstack + oldsp, prev->locals);
 598         if (!qc_program_localstack_resize(prog, oldsp)) {
 599             printf("out of memory\n");
 600             exit(1);
 601         }
 602     }
 603
 604     if (!qc_program_stack_remove(prog, prog->stack_count-1)) {
 605         printf("out of memory\n");
 606         exit(1);
 607     }
 608
 609     return st.stmt - 1; /* offset the ++st */
 610 }
 611
 612 bool prog_exec(qc_program *prog, prog_section_function *func, size_t flags, long maxjumps)
 613 {
 614     long jumpcount = 0;
 615     size_t oldxflags = prog->xflags;
 616     prog_section_statement *st;
 617
 618     prog->vmerror = 0;
 619     prog->xflags = flags;
 620
 621     st = prog->code + prog_enterfunction(prog, func);
 622     --st;
 623     switch (flags)
 624     {
 625         default:
 626         case 0:
 627         {
 628 #define QCVM_LOOP    1
 629 #define QCVM_PROFILE 0
 630 #define QCVM_TRACE   0
 631 #           include __FILE__
 632             break;
 633         }
 634         case (VMXF_TRACE):
 635         {
 636 #define QCVM_PROFILE 0
 637 #define QCVM_TRACE   1
 638 #           include __FILE__
 639             break;
 640         }
 641         case (VMXF_PROFILE):
 642         {
 643 #define QCVM_PROFILE 1
 644 #define QCVM_TRACE   0
 645 #           include __FILE__
 646             break;
 647         }
 648         case (VMXF_TRACE|VMXF_PROFILE):
 649         {
 650 #define QCVM_PROFILE 1
 651 #define QCVM_TRACE   1
 652 #           include __FILE__
 653             break;
 654         }
 655     };
 656
 657 cleanup:
 658     prog->xflags = oldxflags;
 659     prog->localstack_count = 0;
 660     prog->stack_count = 0;
 661     if (prog->vmerror)
 662         return false;
 663     return true;
 664 }
 665
 666 /***********************************************************************
 667  * main for when building the standalone executor
 668  */
 669
 670 #if defined(QCVM_EXECUTOR)
 671 #include <math.h>
 672
 673 const char *type_name[TYPE_COUNT] = {
 674     "void",
 675     "string",
 676     "float",
 677     "vector",
 678     "entity",
 679     "field",
 680     "function",
 681     "pointer",
 682 #if 0
 683     "integer",
 684 #endif
 685     "variant"
 686 };
 687
 688 bool        opts_debug    = false;
 689 bool        opts_memchk   = false;
 690
 691 typedef struct {
 692     int         vtype;
 693     const char *value;
 694 } qcvm_parameter;
 695
 696 VECTOR_MAKE(qcvm_parameter, main_params);
 697
 698 #define CheckArgs(num) do {                                                    \
 699     if (prog->argc != (num)) {                                                 \
 700         prog->vmerror++;                                                       \
 701         printf("ERROR: invalid number of arguments for %s: %i, expected %i\n", \
 702         __FUNCTION__, prog->argc, (num));                                      \
 703         return -1;                                                             \
 704     }                                                                          \
 705 } while (0)
 706
 707 #define GetGlobal(idx) ((qcany*)(prog->globals + (idx)))
 708 #define GetArg(num) GetGlobal(OFS_PARM0 + 3*(num))
 709 #define Return(any) *(GetGlobal(OFS_RETURN)) = (any)
 710
 711 static int qc_print(qc_program *prog)
 712 {
 713     size_t i;
 714     const char *laststr = NULL;
 715     for (i = 0; i < prog->argc; ++i) {
 716         qcany *str = (qcany*)(prog->globals + OFS_PARM0 + 3*i);
 717         printf("%s", (laststr = prog_getstring(prog, str->string)));
 718     }
 719     if (laststr && (prog->xflags & VMXF_TRACE)) {
 720         size_t len = strlen(laststr);
 721         if (!len || laststr[len-1] != '\n')
 722             printf("\n");
 723     }
 724     return 0;
 725 }
 726
 727 static int qc_error(qc_program *prog)
 728 {
 729     printf("*** VM raised an error:\n");
 730     qc_print(prog);
 731     prog->vmerror++;
 732     return -1;
 733 }
 734
 735 static int qc_ftos(qc_program *prog)
 736 {
 737     char buffer[512];
 738     qcany *num;
 739     qcany str;
 740     CheckArgs(1);
 741     num = GetArg(0);
 742     snprintf(buffer, sizeof(buffer), "%g", num->_float);
 743     str.string = prog_tempstring(prog, buffer);
 744     Return(str);
 745     return 0;
 746 }
 747
 748 static int qc_vtos(qc_program *prog)
 749 {
 750     char buffer[512];
 751     qcany *num;
 752     qcany str;
 753     CheckArgs(1);
 754     num = GetArg(0);
 755     snprintf(buffer, sizeof(buffer), "'%g %g %g'", num->vector[0], num->vector[1], num->vector[2]);
 756     str.string = prog_tempstring(prog, buffer);
 757     Return(str);
 758     return 0;
 759 }
 760
 761 static int qc_etos(qc_program *prog)
 762 {
 763     char buffer[512];
 764     qcany *num;
 765     qcany str;
 766     CheckArgs(1);
 767     num = GetArg(0);
 768     snprintf(buffer, sizeof(buffer), "%i", num->_int);
 769     str.string = prog_tempstring(prog, buffer);
 770     Return(str);
 771     return 0;
 772 }
 773
 774 static int qc_spawn(qc_program *prog)
 775 {
 776     qcany ent;
 777     CheckArgs(0);
 778     ent.edict = prog_spawn_entity(prog);
 779     Return(ent);
 780     return (ent.edict ? 0 : -1);
 781 }
 782
 783 static int qc_kill(qc_program *prog)
 784 {
 785     qcany *ent;
 786     CheckArgs(1);
 787     ent = GetArg(0);
 788     prog_free_entity(prog, ent->edict);
 789     return 0;
 790 }
 791
 792 static int qc_vlen(qc_program *prog)
 793 {
 794     qcany *vec, len;
 795     CheckArgs(1);
 796     vec = GetArg(0);
 797     len._float = sqrt(vec->vector[0] * vec->vector[0] +
 798                       vec->vector[1] * vec->vector[1] +
 799                       vec->vector[2] * vec->vector[2]);
 800     Return(len);
 801     return 0;
 802 }
 803
 804 static prog_builtin qc_builtins[] = {
 805     NULL,
 806     &qc_print, /*   1   */
 807     &qc_ftos,  /*   2   */
 808     &qc_spawn, /*   3   */
 809     &qc_kill,  /*   4   */
 810     &qc_vtos,  /*   5   */
 811     &qc_error, /*   6   */
 812     &qc_vlen,  /*   7   */
 813     &qc_etos   /*   8   */
 814 };
 815 static size_t qc_builtins_count = sizeof(qc_builtins) / sizeof(qc_builtins[0]);
 816
 817 static const char *arg0 = NULL;
 818
 819 void usage()
 820 {
 821     printf("usage: [-debug] %s file\n", arg0);
 822     exit(1);
 823 }
 824
 825 static void prog_main_setparams(qc_program *prog)
 826 {
 827     size_t i;
 828     qcany *arg;
 829
 830     for (i = 0; i < main_params_elements; ++i) {
 831         arg = GetGlobal(OFS_PARM0 + 3*i);
 832         arg->vector[0] = 0;
 833         arg->vector[1] = 0;
 834         arg->vector[2] = 0;
 835         switch (main_params_data[i].vtype) {
 836             case TYPE_VECTOR:
 837 #ifdef WIN32
 838                 (void)sscanf_s(main_params_data[i].value, " %f %f %f ",
 839                                &arg->vector[0],
 840                                &arg->vector[1],
 841                                &arg->vector[2]);
 842 #else
 843                 (void)sscanf(main_params_data[i].value, " %f %f %f ",
 844                              &arg->vector[0],
 845                              &arg->vector[1],
 846                              &arg->vector[2]);
 847 #endif
 848                 break;
 849             case TYPE_FLOAT:
 850                 arg->_float = atof(main_params_data[i].value);
 851                 break;
 852             case TYPE_STRING:
 853                 arg->string = prog_tempstring(prog, main_params_data[i].value);
 854                 break;
 855             default:
 856                 printf("error: unhandled parameter type: %i\n", main_params_data[i].vtype);
 857                 break;
 858         }
 859     }
 860 }
 861
 862 void prog_disasm_function(qc_program *prog, size_t id);
 863 int main(int argc, char **argv)
 864 {
 865     size_t      i;
 866     qcint       fnmain = -1;
 867     qc_program *prog;
 868     size_t      xflags = VMXF_DEFAULT;
 869     bool        opts_printfields = false;
 870     bool        opts_printdefs   = false;
 871     bool        opts_disasm      = false;
 872     bool        opts_info  = false;
 873
 874     arg0 = argv[0];
 875
 876     if (argc < 2)
 877         usage();
 878
 879     while (argc > 2) {
 880         if (!strcmp(argv[1], "-trace")) {
 881             --argc;
 882             ++argv;
 883             xflags |= VMXF_TRACE;
 884         }
 885         else if (!strcmp(argv[1], "-profile")) {
 886             --argc;
 887             ++argv;
 888             xflags |= VMXF_PROFILE;
 889         }
 890         else if (!strcmp(argv[1], "-info")) {
 891             --argc;
 892             ++argv;
 893             opts_info = true;
 894         }
 895         else if (!strcmp(argv[1], "-disasm")) {
 896             --argc;
 897             ++argv;
 898             opts_disasm = true;
 899         }
 900         else if (!strcmp(argv[1], "-printdefs")) {
 901             --argc;
 902             ++argv;
 903             opts_printdefs = true;
 904         }
 905         else if (!strcmp(argv[1], "-printfields")) {
 906             --argc;
 907             ++argv;
 908             opts_printfields = true;
 909         }
 910         else if (!strcmp(argv[1], "-vector") ||
 911                  !strcmp(argv[1], "-string") ||
 912                  !strcmp(argv[1], "-float") )
 913         {
 914             qcvm_parameter p;
 915             if (argv[1][1] == 'f')
 916                 p.vtype = TYPE_FLOAT;
 917             else if (argv[1][1] == 's')
 918                 p.vtype = TYPE_STRING;
 919             else if (argv[1][1] == 'v')
 920                 p.vtype = TYPE_VECTOR;
 921
 922             --argc;
 923             ++argv;
 924             if (argc < 3)
 925                 usage();
 926             p.value = argv[1];
 927
 928             if (main_params_add(p) < 0) {
 929                 if (main_params_data)
 930                     mem_d(main_params_data);
 931                 printf("cannot add parameter\n");
 932                 exit(1);
 933             }
 934             --argc;
 935             ++argv;
 936         }
 937         else
 938             usage();
 939     }
 940
 941
 942     prog = prog_load(argv[1]);
 943     if (!prog) {
 944         printf("failed to load program '%s'\n", argv[1]);
 945         exit(1);
 946     }
 947
 948     prog->builtins       = qc_builtins;
 949     prog->builtins_count = qc_builtins_count;
 950     prog->builtins_alloc = 0;
 951
 952     if (opts_info) {
 953         printf("Program's system-checksum = 0x%04x\n", (int)prog->crc16);
 954         printf("Entity field space: %i\n", (int)prog->entityfields);
 955     }
 956
 957     for (i = 1; i < prog->functions_count; ++i) {
 958         const char *name = prog_getstring(prog, prog->functions[i].name);
 959         /* printf("Found function: %s\n", name); */
 960         if (!strcmp(name, "main"))
 961             fnmain = (qcint)i;
 962     }
 963     if (opts_info) {
 964         prog_delete(prog);
 965         return 0;
 966     }
 967     if (opts_disasm) {
 968         for (i = 1; i < prog->functions_count; ++i)
 969             prog_disasm_function(prog, i);
 970         return 0;
 971     }
 972     if (opts_printdefs) {
 973         for (i = 0; i < prog->defs_count; ++i) {
 974             printf("Global: %8s %-16s at %u\n",
 975                    type_name[prog->defs[i].type & DEF_TYPEMASK],
 976                    prog_getstring(prog, prog->defs[i].name),
 977                    (unsigned int)prog->defs[i].offset);
 978         }
 979     }
 980     else if (opts_printfields) {
 981         for (i = 0; i < prog->fields_count; ++i) {
 982             printf("Field: %8s %-16s at %u\n",
 983                    type_name[prog->fields[i].type],
 984                    prog_getstring(prog, prog->fields[i].name),
 985                    (unsigned int)prog->fields[i].offset);
 986         }
 987     }
 988     else
 989     {
 990         if (fnmain > 0)
 991         {
 992             prog_main_setparams(prog);
 993             prog_exec(prog, &prog->functions[fnmain], xflags, VM_JUMPS_DEFAULT);
 994         }
 995         else
 996             printf("No main function found\n");
 997     }
 998
 999     prog_delete(prog);
1000     return 0;
1001 }
1002
1003 void prog_disasm_function(qc_program *prog, size_t id)
1004 {
1005     prog_section_function *fdef = prog->functions + id;
1006     prog_section_statement *st;
1007
1008     if (fdef->entry < 0) {
1009         printf("FUNCTION \"%s\" = builtin #%i\n", prog_getstring(prog, fdef->name), (int)-fdef->entry);
1010         return;
1011     }
1012     else
1013         printf("FUNCTION \"%s\"\n", prog_getstring(prog, fdef->name));
1014
1015     st = prog->code + fdef->entry;
1016     while (st->opcode != AINSTR_END) {
1017         prog_print_statement(prog, st);
1018         ++st;
1019     }
1020 }
1021 #endif
1022 #else /* !QCVM_LOOP */
1023 /*
1024  * Everything from here on is not including into the compilation of the
1025  * executor.  This is simply code that is #included via #include __FILE__
1026  * see when QCVM_LOOP is defined, the rest of the code above do not get
1027  * re-included.  So this really just acts like one large macro, but it
1028  * sort of isn't, which makes it nicer looking.
1029  */
1030
1031 #define OPA ( (qcany*) (prog->globals + st->o1.u1) )
1032 #define OPB ( (qcany*) (prog->globals + st->o2.u1) )
1033 #define OPC ( (qcany*) (prog->globals + st->o3.u1) )
1034
1035 #define GLOBAL(x) ( (qcany*) (prog->globals + (x)) )
1036
1037 /* to be consistent with current darkplaces behaviour */
1038 #if !defined(FLOAT_IS_TRUE_FOR_INT)
1039 #   define FLOAT_IS_TRUE_FOR_INT(x) ( (x) & 0x7FFFFFFF )
1040 #endif
1041
1042 while (1) {
1043         prog_section_function  *newf;
1044         qcany          *ed;
1045         qcany          *ptr;
1046
1047     ++st;
1048
1049 #if QCVM_PROFILE
1050     prog->profile[st - prog->code]++;
1051 #endif
1052
1053 #if QCVM_TRACE
1054     prog_print_statement(prog, st);
1055 #endif
1056
1057     switch (st->opcode)
1058     {
1059         default:
1060             qcvmerror(prog, "Illegal instruction in %s\n", prog->filename);
1061             goto cleanup;
1062
1063                 case INSTR_DONE:
1064                 case INSTR_RETURN:
1065                         /* TODO: add instruction count to function profile count */
1066                         GLOBAL(OFS_RETURN)->ivector[0] = OPA->ivector[0];
1067                         GLOBAL(OFS_RETURN)->ivector[1] = OPA->ivector[1];
1068                         GLOBAL(OFS_RETURN)->ivector[2] = OPA->ivector[2];
1069
1070             st = prog->code + prog_leavefunction(prog);
1071             if (!prog->stack_count)
1072                 goto cleanup;
1073
1074             break;
1075
1076                 case INSTR_MUL_F:
1077                         OPC->_float = OPA->_float * OPB->_float;
1078                         break;
1079                 case INSTR_MUL_V:
1080                         OPC->_float = OPA->vector[0]*OPB->vector[0] +
1081                                       OPA->vector[1]*OPB->vector[1] +
1082                                       OPA->vector[2]*OPB->vector[2];
1083                         break;
1084                 case INSTR_MUL_FV:
1085                         OPC->vector[0] = OPA->_float * OPB->vector[0];
1086                         OPC->vector[1] = OPA->_float * OPB->vector[1];
1087                         OPC->vector[2] = OPA->_float * OPB->vector[2];
1088                         break;
1089                 case INSTR_MUL_VF:
1090                         OPC->vector[0] = OPB->_float * OPA->vector[0];
1091                         OPC->vector[1] = OPB->_float * OPA->vector[1];
1092                         OPC->vector[2] = OPB->_float * OPA->vector[2];
1093                         break;
1094                 case INSTR_DIV_F:
1095                         if (OPB->_float != 0.0f)
1096                                 OPC->_float = OPA->_float / OPB->_float;
1097                         else
1098                                 OPC->_float = 0;
1099                         break;
1100
1101                 case INSTR_ADD_F:
1102                         OPC->_float = OPA->_float + OPB->_float;
1103                         break;
1104                 case INSTR_ADD_V:
1105                         OPC->vector[0] = OPA->vector[0] + OPB->vector[0];
1106                         OPC->vector[1] = OPA->vector[1] + OPB->vector[1];
1107                         OPC->vector[2] = OPA->vector[2] + OPB->vector[2];
1108                         break;
1109                 case INSTR_SUB_F:
1110                         OPC->_float = OPA->_float - OPB->_float;
1111                         break;
1112                 case INSTR_SUB_V:
1113                         OPC->vector[0] = OPA->vector[0] - OPB->vector[0];
1114                         OPC->vector[1] = OPA->vector[1] - OPB->vector[1];
1115                         OPC->vector[2] = OPA->vector[2] - OPB->vector[2];
1116                         break;
1117
1118                 case INSTR_EQ_F:
1119                         OPC->_float = (OPA->_float == OPB->_float);
1120                         break;
1121                 case INSTR_EQ_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_EQ_S:
1127                         OPC->_float = !strcmp(prog_getstring(prog, OPA->string),
1128                                               prog_getstring(prog, OPB->string));
1129                         break;
1130                 case INSTR_EQ_E:
1131                         OPC->_float = (OPA->_int == OPB->_int);
1132                         break;
1133                 case INSTR_EQ_FNC:
1134                         OPC->_float = (OPA->function == OPB->function);
1135                         break;
1136                 case INSTR_NE_F:
1137                         OPC->_float = (OPA->_float != OPB->_float);
1138                         break;
1139                 case INSTR_NE_V:
1140                         OPC->_float = ((OPA->vector[0] != OPB->vector[0]) ||
1141                                        (OPA->vector[1] != OPB->vector[1]) ||
1142                                        (OPA->vector[2] != OPB->vector[2]) );
1143                         break;
1144                 case INSTR_NE_S:
1145                         OPC->_float = !!strcmp(prog_getstring(prog, OPA->string),
1146                                                prog_getstring(prog, OPB->string));
1147                         break;
1148                 case INSTR_NE_E:
1149                         OPC->_float = (OPA->_int != OPB->_int);
1150                         break;
1151                 case INSTR_NE_FNC:
1152                         OPC->_float = (OPA->function != OPB->function);
1153                         break;
1154
1155                 case INSTR_LE:
1156                         OPC->_float = (OPA->_float <= OPB->_float);
1157                         break;
1158                 case INSTR_GE:
1159                         OPC->_float = (OPA->_float >= OPB->_float);
1160                         break;
1161                 case INSTR_LT:
1162                         OPC->_float = (OPA->_float < OPB->_float);
1163                         break;
1164                 case INSTR_GT:
1165                         OPC->_float = (OPA->_float > OPB->_float);
1166                         break;
1167
1168                 case INSTR_LOAD_F:
1169                 case INSTR_LOAD_S:
1170                 case INSTR_LOAD_FLD:
1171                 case INSTR_LOAD_ENT:
1172                 case INSTR_LOAD_FNC:
1173                         if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1174                             qcvmerror(prog, "progs `%s` attempted to read an out of bounds entity", prog->filename);
1175                                 goto cleanup;
1176                         }
1177                         if ((unsigned int)(OPB->_int) >= (unsigned int)(prog->entityfields)) {
1178                                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1179                                           prog->filename,
1180                                           OPB->_int);
1181                                 goto cleanup;
1182                         }
1183                         ed = prog_getedict(prog, OPA->edict);
1184                         OPC->_int = ((qcany*)( ((qcint*)ed) + OPB->_int ))->_int;
1185                         break;
1186                 case INSTR_LOAD_V:
1187                         if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1188                             qcvmerror(prog, "progs `%s` attempted to read an out of bounds entity", prog->filename);
1189                                 goto cleanup;
1190                         }
1191                         if (OPB->_int < 0 || OPB->_int + 3 > prog->entityfields)
1192                         {
1193                                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1194                                           prog->filename,
1195                                           OPB->_int + 2);
1196                                 goto cleanup;
1197                         }
1198                         ed = prog_getedict(prog, OPA->edict);
1199                         OPC->ivector[0] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[0];
1200                         OPC->ivector[1] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[1];
1201                         OPC->ivector[2] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[2];
1202                         break;
1203
1204                 case INSTR_ADDRESS:
1205                         if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1206                                 qcvmerror(prog, "prog `%s` attempted to address an out of bounds entity %i", prog->filename, OPA->edict);
1207                                 goto cleanup;
1208                         }
1209                         if ((unsigned int)(OPB->_int) >= (unsigned int)(prog->entityfields))
1210                         {
1211                                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1212                                           prog->filename,
1213                                           OPB->_int);
1214                                 goto cleanup;
1215                         }
1216
1217                         ed = prog_getedict(prog, OPA->edict);
1218                         OPC->_int = ((qcint*)ed) - prog->entitydata + OPB->_int;
1219                         break;
1220
1221                 case INSTR_STORE_F:
1222                 case INSTR_STORE_S:
1223                 case INSTR_STORE_ENT:
1224                 case INSTR_STORE_FLD:
1225                 case INSTR_STORE_FNC:
1226                         OPB->_int = OPA->_int;
1227                         break;
1228                 case INSTR_STORE_V:
1229                         OPB->ivector[0] = OPA->ivector[0];
1230                         OPB->ivector[1] = OPA->ivector[1];
1231                         OPB->ivector[2] = OPA->ivector[2];
1232                         break;
1233
1234                 case INSTR_STOREP_F:
1235                 case INSTR_STOREP_S:
1236                 case INSTR_STOREP_ENT:
1237                 case INSTR_STOREP_FLD:
1238                 case INSTR_STOREP_FNC:
1239                         if (OPB->_int < 0 || OPB->_int >= prog->entitydata_count) {
1240                                 qcvmerror(prog, "`%s` attempted to write to an out of bounds edict (%i)", prog->filename, OPB->_int);
1241                                 goto cleanup;
1242                         }
1243                         if (OPB->_int < prog->entityfields && !prog->allowworldwrites)
1244                                 qcvmerror(prog, "`%s` tried to assign to world.%s (field %i)\n",
1245                                           prog->filename,
1246                                           prog_getstring(prog, prog_entfield(prog, OPB->_int)->name),
1247                                           OPB->_int);
1248                         ptr = (qcany*)(prog->entitydata + OPB->_int);
1249                         ptr->_int = OPA->_int;
1250                         break;
1251                 case INSTR_STOREP_V:
1252                         if (OPB->_int < 0 || OPB->_int + 2 >= prog->entitydata_count) {
1253                                 qcvmerror(prog, "`%s` attempted to write to an out of bounds edict (%i)", prog->filename, OPB->_int);
1254                                 goto cleanup;
1255                         }
1256                         if (OPB->_int < prog->entityfields && !prog->allowworldwrites)
1257                                 qcvmerror(prog, "`%s` tried to assign to world.%s (field %i)\n",
1258                                           prog->filename,
1259                                           prog_getstring(prog, prog_entfield(prog, OPB->_int)->name),
1260                                           OPB->_int);
1261                         ptr = (qcany*)(prog->entitydata + OPB->_int);
1262                         ptr->ivector[0] = OPA->ivector[0];
1263                         ptr->ivector[1] = OPA->ivector[1];
1264                         ptr->ivector[2] = OPA->ivector[2];
1265                         break;
1266
1267                 case INSTR_NOT_F:
1268                         OPC->_float = !FLOAT_IS_TRUE_FOR_INT(OPA->_int);
1269                         break;
1270                 case INSTR_NOT_V:
1271                         OPC->_float = !OPA->vector[0] &&
1272                                       !OPA->vector[1] &&
1273                                       !OPA->vector[2];
1274                         break;
1275                 case INSTR_NOT_S:
1276                         OPC->_float = !OPA->string ||
1277                                       !*prog_getstring(prog, OPA->string);
1278                         break;
1279                 case INSTR_NOT_ENT:
1280                         OPC->_float = (OPA->edict == 0);
1281                         break;
1282                 case INSTR_NOT_FNC:
1283                         OPC->_float = !OPA->function;
1284                         break;
1285
1286                 case INSTR_IF:
1287                     /* this is consistent with darkplaces' behaviour */
1288                         if(FLOAT_IS_TRUE_FOR_INT(OPA->_int))
1289                         {
1290                                 st += st->o2.s1 - 1;    /* offset the s++ */
1291                                 if (++jumpcount >= maxjumps)
1292                                         qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1293                         }
1294                         break;
1295                 case INSTR_IFNOT:
1296                         if(!FLOAT_IS_TRUE_FOR_INT(OPA->_int))
1297                         {
1298                                 st += st->o2.s1 - 1;    /* offset the s++ */
1299                                 if (++jumpcount >= maxjumps)
1300                                         qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1301                         }
1302                         break;
1303
1304                 case INSTR_CALL0:
1305                 case INSTR_CALL1:
1306                 case INSTR_CALL2:
1307                 case INSTR_CALL3:
1308                 case INSTR_CALL4:
1309                 case INSTR_CALL5:
1310                 case INSTR_CALL6:
1311                 case INSTR_CALL7:
1312                 case INSTR_CALL8:
1313                         prog->argc = st->opcode - INSTR_CALL0;
1314                         if (!OPA->function)
1315                                 qcvmerror(prog, "NULL function in `%s`", prog->filename);
1316
1317                         if(!OPA->function || OPA->function >= (unsigned int)prog->functions_count)
1318                         {
1319                                 qcvmerror(prog, "CALL outside the program in `%s` (%i)", prog->filename, (int)OPA->function);
1320                                 goto cleanup;
1321                         }
1322
1323                         newf = &prog->functions[OPA->function];
1324                         newf->profile++;
1325
1326                         prog->statement = (st - prog->code) + 1;
1327
1328                         if (newf->entry < 0)
1329                         {
1330                                 /* negative statements are built in functions */
1331                                 int builtinnumber = -newf->entry;
1332                                 if (builtinnumber < prog->builtins_count && prog->builtins[builtinnumber])
1333                                         prog->builtins[builtinnumber](prog);
1334                                 else
1335                                         qcvmerror(prog, "No such builtin #%i in %s! Try updating your gmqcc sources",
1336                                                   builtinnumber, prog->filename);
1337                         }
1338                         else
1339                                 st = prog->code + prog_enterfunction(prog, newf) - 1; /* offset st++ */
1340                         if (prog->vmerror)
1341                                 goto cleanup;
1342                         break;
1343
1344                 case INSTR_STATE:
1345                     qcvmerror(prog, "`%s` tried to execute a STATE operation", prog->filename);
1346                         break;
1347
1348                 case INSTR_GOTO:
1349                         st += st->o1.s1 - 1;    /* offset the s++ */
1350                         if (++jumpcount == 10000000)
1351                                         qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1352                         break;
1353
1354                 case INSTR_AND:
1355                         OPC->_float = FLOAT_IS_TRUE_FOR_INT(OPA->_int) &&
1356                                       FLOAT_IS_TRUE_FOR_INT(OPB->_int);
1357                         break;
1358                 case INSTR_OR:
1359                         OPC->_float = FLOAT_IS_TRUE_FOR_INT(OPA->_int) ||
1360                                       FLOAT_IS_TRUE_FOR_INT(OPB->_int);
1361                         break;
1362
1363                 case INSTR_BITAND:
1364                         OPC->_float = ((int)OPA->_float) & ((int)OPB->_float);
1365                         break;
1366                 case INSTR_BITOR:
1367                         OPC->_float = ((int)OPA->_float) | ((int)OPB->_float);
1368                         break;
1369     }
1370 }
1371
1372 #undef QCVM_PROFILE
1373 #undef QCVM_TRACE
1374 #endif /* !QCVM_LOOP */