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 /*
  33 (prog_section_statement, code)
  34 (prog_section_def,       defs)
  35 (prog_section_def,       fields)
  36 (prog_section_function,  functions)
  37 (char,                   strings)
  38 (qcint,                  globals)
  39 (qcint,                  entitydata)
  40 (bool,                   entitypool)
  41 (qcint,         localstack)
  42 (qc_exec_stack, stack)
  43 (size_t, profile)
  44 (prog_builtin, builtins)
  45 (const char*, function_stack)
  46 */
  47
  48 static void loaderror(const char *fmt, ...)
  49 {
  50     int     err = errno;
  51     va_list ap;
  52     va_start(ap, fmt);
  53     vprintf(fmt, ap);
  54     va_end(ap);
  55     printf(": %s\n", strerror(err));
  56 }
  57
  58 static void qcvmerror(qc_program *prog, const char *fmt, ...)
  59 {
  60     va_list ap;
  61
  62     prog->vmerror++;
  63
  64     va_start(ap, fmt);
  65     vprintf(fmt, ap);
  66     va_end(ap);
  67     putchar('\n');
  68 }
  69
  70 qc_program* prog_load(const char *filename)
  71 {
  72     qc_program *prog;
  73     prog_header header;
  74     FILE *file;
  75
  76     file = util_fopen(filename, "rb");
  77     if (!file)
  78         return NULL;
  79
  80     if (fread(&header, sizeof(header), 1, file) != 1) {
  81         loaderror("failed to read header from '%s'", filename);
  82         fclose(file);
  83         return NULL;
  84     }
  85
  86     if (header.version != 6) {
  87         loaderror("header says this is a version %i progs, we need version 6\n", header.version);
  88         fclose(file);
  89         return NULL;
  90     }
  91
  92     prog = (qc_program*)mem_a(sizeof(qc_program));
  93     if (!prog) {
  94         fclose(file);
  95         printf("failed to allocate program data\n");
  96         return NULL;
  97     }
  98     memset(prog, 0, sizeof(*prog));
  99
 100     prog->entityfields = header.entfield;
 101     prog->crc16 = header.crc16;
 102
 103     prog->filename = util_strdup(filename);
 104     if (!prog->filename) {
 105         loaderror("failed to store program name");
 106         goto error;
 107     }
 108
 109 #define read_data(hdrvar, progvar, reserved)                           \
 110     if (fseek(file, header.hdrvar.offset, SEEK_SET) != 0) {            \
 111         loaderror("seek failed");                                      \
 112         goto error;                                                    \
 113     }                                                                  \
 114     if (fread(vec_add(prog->progvar, header.hdrvar.length + reserved), \
 115               sizeof(*prog->progvar),                                  \
 116               header.hdrvar.length, file)                              \
 117         != header.hdrvar.length)                                       \
 118     {                                                                  \
 119         loaderror("read failed");                                      \
 120         goto error;                                                    \
 121     }
 122 #define read_data1(x)    read_data(x, x, 0)
 123 #define read_data2(x, y) read_data(x, x, y)
 124
 125     read_data (statements, code, 0);
 126     read_data1(defs);
 127     read_data1(fields);
 128     read_data1(functions);
 129     read_data1(strings);
 130     read_data2(globals, 2); /* reserve more in case a RETURN using with the global at "the end" exists */
 131
 132     fclose(file);
 133
 134     /* profile counters */
 135     memset(vec_add(prog->profile, vec_size(prog->code)), 0, sizeof(prog->profile[0]) * vec_size(prog->code));
 136
 137     /* Add tempstring area */
 138     prog->tempstring_start = vec_size(prog->strings);
 139     prog->tempstring_at    = vec_size(prog->strings);
 140     memset(vec_add(prog->strings, 16*1024), 0, 16*1024);
 141
 142     /* spawn the world entity */
 143     vec_push(prog->entitypool, true);
 144     memset(vec_add(prog->entitydata, prog->entityfields), 0, prog->entityfields * sizeof(prog->entitydata[0]));
 145     prog->entities = 1;
 146
 147     return prog;
 148
 149 error:
 150     if (prog->filename)
 151         mem_d(prog->filename);
 152     vec_free(prog->code);
 153     vec_free(prog->defs);
 154     vec_free(prog->fields);
 155     vec_free(prog->functions);
 156     vec_free(prog->strings);
 157     vec_free(prog->globals);
 158     vec_free(prog->entitydata);
 159     vec_free(prog->entitypool);
 160     mem_d(prog);
 161     return NULL;
 162 }
 163
 164 void prog_delete(qc_program *prog)
 165 {
 166     if (prog->filename) mem_d(prog->filename);
 167     vec_free(prog->code);
 168     vec_free(prog->defs);
 169     vec_free(prog->fields);
 170     vec_free(prog->functions);
 171     vec_free(prog->strings);
 172     vec_free(prog->globals);
 173     vec_free(prog->entitydata);
 174     vec_free(prog->entitypool);
 175     vec_free(prog->localstack);
 176     vec_free(prog->stack);
 177     vec_free(prog->profile);
 178     mem_d(prog);
 179 }
 180
 181 /***********************************************************************
 182  * VM code
 183  */
 184
 185 char* prog_getstring(qc_program *prog, qcint str)
 186 {
 187     if (str < 0 || str >= (qcint)vec_size(prog->strings))
 188         return "<<<invalid string>>>";
 189     return prog->strings + str;
 190 }
 191
 192 prog_section_def* prog_entfield(qc_program *prog, qcint off)
 193 {
 194     size_t i;
 195     for (i = 0; i < vec_size(prog->fields); ++i) {
 196         if (prog->fields[i].offset == off)
 197             return (prog->fields + i);
 198     }
 199     return NULL;
 200 }
 201
 202 prog_section_def* prog_getdef(qc_program *prog, qcint off)
 203 {
 204     size_t i;
 205     for (i = 0; i < vec_size(prog->defs); ++i) {
 206         if (prog->defs[i].offset == off)
 207             return (prog->defs + i);
 208     }
 209     return NULL;
 210 }
 211
 212 qcany* prog_getedict(qc_program *prog, qcint e)
 213 {
 214     if (e >= (qcint)vec_size(prog->entitypool)) {
 215         prog->vmerror++;
 216         printf("Accessing out of bounds edict %i\n", (int)e);
 217         e = 0;
 218     }
 219     return (qcany*)(prog->entitydata + (prog->entityfields * e));
 220 }
 221
 222 qcint prog_spawn_entity(qc_program *prog)
 223 {
 224     char  *data;
 225     qcint  e;
 226     for (e = 0; e < (qcint)vec_size(prog->entitypool); ++e) {
 227         if (!prog->entitypool[e]) {
 228             data = (char*)(prog->entitydata + (prog->entityfields * e));
 229             memset(data, 0, prog->entityfields * sizeof(qcint));
 230             return e;
 231         }
 232     }
 233     vec_push(prog->entitypool, true);
 234     prog->entities++;
 235     data = (char*)vec_add(prog->entitydata, prog->entityfields);
 236     memset(data, 0, prog->entityfields * sizeof(qcint));
 237     return e;
 238 }
 239
 240 void prog_free_entity(qc_program *prog, qcint e)
 241 {
 242     if (!e) {
 243         prog->vmerror++;
 244         printf("Trying to free world entity\n");
 245         return;
 246     }
 247     if (e >= (qcint)vec_size(prog->entitypool)) {
 248         prog->vmerror++;
 249         printf("Trying to free out of bounds entity\n");
 250         return;
 251     }
 252     if (!prog->entitypool[e]) {
 253         prog->vmerror++;
 254         printf("Double free on entity\n");
 255         return;
 256     }
 257     prog->entitypool[e] = false;
 258 }
 259
 260 qcint prog_tempstring(qc_program *prog, const char *_str)
 261 {
 262     /* we don't access it, but the macro-generated functions don't use
 263      * const
 264      */
 265     char *str = (char*)_str;
 266
 267     size_t len = strlen(str);
 268     size_t at = prog->tempstring_at;
 269
 270     /* when we reach the end we start over */
 271     if (at + len >= vec_size(prog->strings))
 272         at = prog->tempstring_start;
 273
 274     /* when it doesn't fit, reallocate */
 275     if (at + len >= vec_size(prog->strings))
 276     {
 277         (void)vec_add(prog->strings, len+1);
 278         memcpy(prog->strings + at, str, len+1);
 279         return at;
 280     }
 281
 282     /* when it fits, just copy */
 283     memcpy(prog->strings + at, str, len+1);
 284     prog->tempstring_at += len+1;
 285     return at;
 286 }
 287
 288 static size_t print_escaped_string(const char *str, size_t maxlen)
 289 {
 290     size_t len = 2;
 291     putchar('"');
 292     --maxlen; /* because we're lazy and have escape sequences */
 293     while (*str) {
 294         if (len >= maxlen) {
 295             putchar('.');
 296             putchar('.');
 297             putchar('.');
 298             len += 3;
 299             break;
 300         }
 301         switch (*str) {
 302             case '\a': len += 2; putchar('\\'); putchar('a'); break;
 303             case '\b': len += 2; putchar('\\'); putchar('b'); break;
 304             case '\r': len += 2; putchar('\\'); putchar('r'); break;
 305             case '\n': len += 2; putchar('\\'); putchar('n'); break;
 306             case '\t': len += 2; putchar('\\'); putchar('t'); break;
 307             case '\f': len += 2; putchar('\\'); putchar('f'); break;
 308             case '\v': len += 2; putchar('\\'); putchar('v'); break;
 309             case '\\': len += 2; putchar('\\'); putchar('\\'); break;
 310             case '"':  len += 2; putchar('\\'); putchar('"'); break;
 311             default:
 312                 ++len;
 313                 putchar(*str);
 314                 break;
 315         }
 316         ++str;
 317     }
 318     putchar('"');
 319     return len;
 320 }
 321
 322 static void trace_print_global(qc_program *prog, unsigned int glob, int vtype)
 323 {
 324     static char spaces[28+1] = "                            ";
 325     prog_section_def *def;
 326     qcany    *value;
 327     int       len;
 328
 329     if (!glob) {
 330         len = printf("<null>,");
 331         goto done;
 332     }
 333
 334     def = prog_getdef(prog, glob);
 335     value = (qcany*)(&prog->globals[glob]);
 336
 337     len = printf("[@%u] ", glob);
 338     if (def) {
 339         const char *name = prog_getstring(prog, def->name);
 340         if (name[0] == '#')
 341             len += printf("$");
 342         else
 343             len += printf("%s ", name);
 344         vtype = def->type & DEF_TYPEMASK;
 345     }
 346
 347     switch (vtype) {
 348         case TYPE_VOID:
 349         case TYPE_ENTITY:
 350         case TYPE_FIELD:
 351         case TYPE_FUNCTION:
 352         case TYPE_POINTER:
 353             len += printf("(%i),", value->_int);
 354             break;
 355         case TYPE_VECTOR:
 356             len += printf("'%g %g %g',", value->vector[0],
 357                                          value->vector[1],
 358                                          value->vector[2]);
 359             break;
 360         case TYPE_STRING:
 361             len += print_escaped_string(prog_getstring(prog, value->string), sizeof(spaces)-len-5);
 362             len += printf(",");
 363             /* len += printf("\"%s\",", prog_getstring(prog, value->string)); */
 364             break;
 365         case TYPE_FLOAT:
 366         default:
 367             len += printf("%g,", value->_float);
 368             break;
 369     }
 370 done:
 371     if (len < (int)sizeof(spaces)-1) {
 372         spaces[sizeof(spaces)-1-len] = 0;
 373         printf(spaces);
 374         spaces[sizeof(spaces)-1-len] = ' ';
 375     }
 376 }
 377
 378 static void prog_print_statement(qc_program *prog, prog_section_statement *st)
 379 {
 380     if (st->opcode >= (sizeof(asm_instr)/sizeof(asm_instr[0]))) {
 381         printf("<illegal instruction %d>\n", st->opcode);
 382         return;
 383     }
 384     if ((prog->xflags & VMXF_TRACE) && vec_size(prog->function_stack)) {
 385         size_t i;
 386         for (i = 0; i < vec_size(prog->function_stack); ++i)
 387             printf("->");
 388         printf("%s:", vec_last(prog->function_stack));
 389     }
 390     printf(" <> %-12s", asm_instr[st->opcode].m);
 391     if (st->opcode >= INSTR_IF &&
 392         st->opcode <= INSTR_IFNOT)
 393     {
 394         trace_print_global(prog, st->o1.u1, TYPE_FLOAT);
 395         printf("%d\n", st->o2.s1);
 396     }
 397     else if (st->opcode >= INSTR_CALL0 &&
 398              st->opcode <= INSTR_CALL8)
 399     {
 400         trace_print_global(prog, st->o1.u1, TYPE_FUNCTION);
 401         printf("\n");
 402     }
 403     else if (st->opcode == INSTR_GOTO)
 404     {
 405         printf("%i\n", st->o1.s1);
 406     }
 407     else
 408     {
 409         int t[3] = { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT };
 410         switch (st->opcode)
 411         {
 412             case INSTR_MUL_FV:
 413                 t[1] = t[2] = TYPE_VECTOR;
 414                 break;
 415             case INSTR_MUL_VF:
 416                 t[0] = t[2] = TYPE_VECTOR;
 417                 break;
 418             case INSTR_MUL_V:
 419                 t[0] = t[1] = TYPE_VECTOR;
 420                 break;
 421             case INSTR_ADD_V:
 422             case INSTR_SUB_V:
 423             case INSTR_EQ_V:
 424             case INSTR_NE_V:
 425                 t[0] = t[1] = t[2] = TYPE_VECTOR;
 426                 break;
 427             case INSTR_EQ_S:
 428             case INSTR_NE_S:
 429                 t[0] = t[1] = TYPE_STRING;
 430                 break;
 431             case INSTR_STORE_F:
 432             case INSTR_STOREP_F:
 433                 t[2] = -1;
 434                 break;
 435             case INSTR_STORE_V:
 436                 t[0] = t[1] = TYPE_VECTOR; t[2] = -1;
 437                 break;
 438             case INSTR_STORE_S:
 439                 t[0] = t[1] = TYPE_STRING; t[2] = -1;
 440                 break;
 441             case INSTR_STORE_ENT:
 442                 t[0] = t[1] = TYPE_ENTITY; t[2] = -1;
 443                 break;
 444             case INSTR_STORE_FLD:
 445                 t[0] = t[1] = TYPE_FIELD; t[2] = -1;
 446                 break;
 447             case INSTR_STORE_FNC:
 448                 t[0] = t[1] = TYPE_FUNCTION; t[2] = -1;
 449                 break;
 450             case INSTR_STOREP_V:
 451                 t[0] = TYPE_VECTOR; t[1] = TYPE_ENTITY; t[2] = -1;
 452                 break;
 453             case INSTR_STOREP_S:
 454                 t[0] = TYPE_STRING; t[1] = TYPE_ENTITY; t[2] = -1;
 455                 break;
 456             case INSTR_STOREP_ENT:
 457                 t[0] = TYPE_ENTITY; t[1] = TYPE_ENTITY; t[2] = -1;
 458                 break;
 459             case INSTR_STOREP_FLD:
 460                 t[0] = TYPE_FIELD; t[1] = TYPE_ENTITY; t[2] = -1;
 461                 break;
 462             case INSTR_STOREP_FNC:
 463                 t[0] = TYPE_FUNCTION; t[1] = TYPE_ENTITY; t[2] = -1;
 464                 break;
 465         }
 466         if (t[0] >= 0) trace_print_global(prog, st->o1.u1, t[0]);
 467         else           printf("(none),          ");
 468         if (t[1] >= 0) trace_print_global(prog, st->o2.u1, t[1]);
 469         else           printf("(none),          ");
 470         if (t[2] >= 0) trace_print_global(prog, st->o3.u1, t[2]);
 471         else           printf("(none)");
 472         printf("\n");
 473     }
 474     fflush(stdout);
 475 }
 476
 477 static qcint prog_enterfunction(qc_program *prog, prog_section_function *func)
 478 {
 479     qc_exec_stack st;
 480     size_t  parampos;
 481     int32_t p;
 482
 483     /* back up locals */
 484     st.localsp  = vec_size(prog->localstack);
 485     st.stmt     = prog->statement;
 486     st.function = func;
 487
 488     if (prog->xflags & VMXF_TRACE) {
 489         vec_push(prog->function_stack, prog_getstring(prog, func->name));
 490     }
 491
 492 #ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
 493     if (vec_size(prog->stack))
 494     {
 495         prog_section_function *cur;
 496         cur = prog->stack[vec_size(prog->stack)-1].function;
 497         if (cur)
 498         {
 499             qcint *globals = prog->globals + cur->firstlocal;
 500             vec_append(prog->localstack, cur->locals, globals);
 501         }
 502     }
 503 #else
 504     {
 505         qcint *globals = prog->globals + func->firstlocal;
 506         vec_append(prog->localstack, func->locals, globals);
 507     }
 508 #endif
 509
 510     /* copy parameters */
 511     parampos = func->firstlocal;
 512     for (p = 0; p < func->nargs; ++p)
 513     {
 514         size_t s;
 515         for (s = 0; s < func->argsize[p]; ++s) {
 516             prog->globals[parampos] = prog->globals[OFS_PARM0 + 3*p + s];
 517             ++parampos;
 518         }
 519     }
 520
 521     vec_push(prog->stack, st);
 522
 523     return func->entry;
 524 }
 525
 526 static qcint prog_leavefunction(qc_program *prog)
 527 {
 528     prog_section_function *prev = NULL;
 529     size_t oldsp;
 530
 531     qc_exec_stack st = vec_last(prog->stack);
 532
 533     if (prog->xflags & VMXF_TRACE) {
 534         if (vec_size(prog->function_stack))
 535             vec_pop(prog->function_stack);
 536     }
 537
 538 #ifdef QCVM_BACKUP_STRATEGY_CALLER_VARS
 539     if (vec_size(prog->stack) > 1) {
 540         prev  = prog->stack[vec_size(prog->stack)-2].function;
 541         oldsp = prog->stack[vec_size(prog->stack)-2].localsp;
 542     }
 543 #else
 544     prev  = prog->stack[vec_size(prog->stack)-1].function;
 545     oldsp = prog->stack[vec_size(prog->stack)-1].localsp;
 546 #endif
 547     if (prev) {
 548         qcint *globals = prog->globals + prev->firstlocal;
 549         memcpy(globals, prog->localstack + oldsp, prev->locals);
 550         /* vec_remove(prog->localstack, oldsp, vec_size(prog->localstack)-oldsp); */
 551         vec_shrinkto(prog->localstack, oldsp);
 552     }
 553
 554     vec_pop(prog->stack);
 555
 556     return st.stmt - 1; /* offset the ++st */
 557 }
 558
 559 bool prog_exec(qc_program *prog, prog_section_function *func, size_t flags, long maxjumps)
 560 {
 561     long jumpcount = 0;
 562     size_t oldxflags = prog->xflags;
 563     prog_section_statement *st;
 564
 565     prog->vmerror = 0;
 566     prog->xflags = flags;
 567
 568     st = prog->code + prog_enterfunction(prog, func);
 569     --st;
 570     switch (flags)
 571     {
 572         default:
 573         case 0:
 574         {
 575 #define QCVM_LOOP    1
 576 #define QCVM_PROFILE 0
 577 #define QCVM_TRACE   0
 578 #           include __FILE__
 579             break;
 580         }
 581         case (VMXF_TRACE):
 582         {
 583 #define QCVM_PROFILE 0
 584 #define QCVM_TRACE   1
 585 #           include __FILE__
 586             break;
 587         }
 588         case (VMXF_PROFILE):
 589         {
 590 #define QCVM_PROFILE 1
 591 #define QCVM_TRACE   0
 592 #           include __FILE__
 593             break;
 594         }
 595         case (VMXF_TRACE|VMXF_PROFILE):
 596         {
 597 #define QCVM_PROFILE 1
 598 #define QCVM_TRACE   1
 599 #           include __FILE__
 600             break;
 601         }
 602     };
 603
 604 cleanup:
 605     prog->xflags = oldxflags;
 606     vec_free(prog->localstack);
 607     vec_free(prog->stack);
 608     if (prog->vmerror)
 609         return false;
 610     return true;
 611 }
 612
 613 /***********************************************************************
 614  * main for when building the standalone executor
 615  */
 616
 617 #if defined(QCVM_EXECUTOR)
 618 #include <math.h>
 619
 620 opts_cmd_t opts;
 621
 622 const char *type_name[TYPE_COUNT] = {
 623     "void",
 624     "string",
 625     "float",
 626     "vector",
 627     "entity",
 628     "field",
 629     "function",
 630     "pointer",
 631 #if 0
 632     "integer",
 633 #endif
 634     "variant"
 635 };
 636
 637 typedef struct {
 638     int         vtype;
 639     const char *value;
 640 } qcvm_parameter;
 641
 642 qcvm_parameter *main_params = NULL;
 643
 644 #define CheckArgs(num) do {                                                    \
 645     if (prog->argc != (num)) {                                                 \
 646         prog->vmerror++;                                                       \
 647         printf("ERROR: invalid number of arguments for %s: %i, expected %i\n", \
 648         __FUNCTION__, prog->argc, (num));                                      \
 649         return -1;                                                             \
 650     }                                                                          \
 651 } while (0)
 652
 653 #define GetGlobal(idx) ((qcany*)(prog->globals + (idx)))
 654 #define GetArg(num) GetGlobal(OFS_PARM0 + 3*(num))
 655 #define Return(any) *(GetGlobal(OFS_RETURN)) = (any)
 656
 657 static int qc_print(qc_program *prog)
 658 {
 659     size_t i;
 660     const char *laststr = NULL;
 661     for (i = 0; i < (size_t)prog->argc; ++i) {
 662         qcany *str = (qcany*)(prog->globals + OFS_PARM0 + 3*i);
 663         printf("%s", (laststr = prog_getstring(prog, str->string)));
 664     }
 665     if (laststr && (prog->xflags & VMXF_TRACE)) {
 666         size_t len = strlen(laststr);
 667         if (!len || laststr[len-1] != '\n')
 668             printf("\n");
 669     }
 670     return 0;
 671 }
 672
 673 static int qc_error(qc_program *prog)
 674 {
 675     printf("*** VM raised an error:\n");
 676     qc_print(prog);
 677     prog->vmerror++;
 678     return -1;
 679 }
 680
 681 static int qc_ftos(qc_program *prog)
 682 {
 683     char buffer[512];
 684     qcany *num;
 685     qcany str;
 686     CheckArgs(1);
 687     num = GetArg(0);
 688     snprintf(buffer, sizeof(buffer), "%g", num->_float);
 689     str.string = prog_tempstring(prog, buffer);
 690     Return(str);
 691     return 0;
 692 }
 693
 694 static int qc_stof(qc_program *prog)
 695 {
 696     qcany *str;
 697     qcany num;
 698     CheckArgs(1);
 699     str = GetArg(0);
 700     num._float = strtof(prog_getstring(prog, str->string), NULL);
 701     Return(num);
 702     return 0;
 703 }
 704
 705 static int qc_vtos(qc_program *prog)
 706 {
 707     char buffer[512];
 708     qcany *num;
 709     qcany str;
 710     CheckArgs(1);
 711     num = GetArg(0);
 712     snprintf(buffer, sizeof(buffer), "'%g %g %g'", num->vector[0], num->vector[1], num->vector[2]);
 713     str.string = prog_tempstring(prog, buffer);
 714     Return(str);
 715     return 0;
 716 }
 717
 718 static int qc_etos(qc_program *prog)
 719 {
 720     char buffer[512];
 721     qcany *num;
 722     qcany str;
 723     CheckArgs(1);
 724     num = GetArg(0);
 725     snprintf(buffer, sizeof(buffer), "%i", num->_int);
 726     str.string = prog_tempstring(prog, buffer);
 727     Return(str);
 728     return 0;
 729 }
 730
 731 static int qc_spawn(qc_program *prog)
 732 {
 733     qcany ent;
 734     CheckArgs(0);
 735     ent.edict = prog_spawn_entity(prog);
 736     Return(ent);
 737     return (ent.edict ? 0 : -1);
 738 }
 739
 740 static int qc_kill(qc_program *prog)
 741 {
 742     qcany *ent;
 743     CheckArgs(1);
 744     ent = GetArg(0);
 745     prog_free_entity(prog, ent->edict);
 746     return 0;
 747 }
 748
 749 static int qc_vlen(qc_program *prog)
 750 {
 751     qcany *vec, len;
 752     CheckArgs(1);
 753     vec = GetArg(0);
 754     len._float = sqrt(vec->vector[0] * vec->vector[0] +
 755                       vec->vector[1] * vec->vector[1] +
 756                       vec->vector[2] * vec->vector[2]);
 757     Return(len);
 758     return 0;
 759 }
 760
 761 static prog_builtin qc_builtins[] = {
 762     NULL,
 763     &qc_print, /*   1   */
 764     &qc_ftos,  /*   2   */
 765     &qc_spawn, /*   3   */
 766     &qc_kill,  /*   4   */
 767     &qc_vtos,  /*   5   */
 768     &qc_error, /*   6   */
 769     &qc_vlen,  /*   7   */
 770     &qc_etos,  /*   8   */
 771     &qc_stof   /*   9   */
 772 };
 773 static size_t qc_builtins_count = sizeof(qc_builtins) / sizeof(qc_builtins[0]);
 774
 775 static const char *arg0 = NULL;
 776
 777 void usage()
 778 {
 779     printf("usage: %s [options] [parameters] file\n", arg0);
 780     printf("options:\n");
 781     printf("  -h, --help    print this message\n"
 782            "  -trace        trace the execution\n"
 783            "  -profile      perform profiling during execution\n"
 784            "  -info         print information from the prog's header\n"
 785            "  -disasm       disassemble and exit\n"
 786            "  -printdefs    list the defs section\n"
 787            "  -printfields  list the field section\n"
 788            "  -printfuns    list functions information\n");
 789     printf("parameters:\n");
 790     printf("  -vector <V>   pass a vector parameter to main()\n"
 791            "  -float  <f>   pass a float parameter to main()\n"
 792            "  -string <s>   pass a string parameter to main() \n");
 793 }
 794
 795 static void prog_main_setparams(qc_program *prog)
 796 {
 797     size_t i;
 798     qcany *arg;
 799
 800     for (i = 0; i < vec_size(main_params); ++i) {
 801         arg = GetGlobal(OFS_PARM0 + 3*i);
 802         arg->vector[0] = 0;
 803         arg->vector[1] = 0;
 804         arg->vector[2] = 0;
 805         switch (main_params[i].vtype) {
 806             case TYPE_VECTOR:
 807 #ifdef WIN32
 808                 (void)sscanf_s(main_params[i].value, " %f %f %f ",
 809                                &arg->vector[0],
 810                                &arg->vector[1],
 811                                &arg->vector[2]);
 812 #else
 813                 (void)sscanf(main_params[i].value, " %f %f %f ",
 814                              &arg->vector[0],
 815                              &arg->vector[1],
 816                              &arg->vector[2]);
 817 #endif
 818                 break;
 819             case TYPE_FLOAT:
 820                 arg->_float = atof(main_params[i].value);
 821                 break;
 822             case TYPE_STRING:
 823                 arg->string = prog_tempstring(prog, main_params[i].value);
 824                 break;
 825             default:
 826                 printf("error: unhandled parameter type: %i\n", main_params[i].vtype);
 827                 break;
 828         }
 829     }
 830 }
 831
 832 void prog_disasm_function(qc_program *prog, size_t id);
 833 int main(int argc, char **argv)
 834 {
 835     size_t      i;
 836     qcint       fnmain = -1;
 837     qc_program *prog;
 838     size_t      xflags = VMXF_DEFAULT;
 839     bool        opts_printfields = false;
 840     bool        opts_printdefs   = false;
 841     bool        opts_printfuns   = false;
 842     bool        opts_disasm      = false;
 843     bool        opts_info        = false;
 844     bool        noexec           = false;
 845
 846     arg0 = argv[0];
 847
 848     if (argc < 2) {
 849         usage();
 850         exit(1);
 851     }
 852
 853     while (argc > 2) {
 854         if (!strcmp(argv[1], "-h") ||
 855             !strcmp(argv[1], "-help") ||
 856             !strcmp(argv[1], "--help"))
 857         {
 858             usage();
 859             exit(0);
 860         }
 861         else if (!strcmp(argv[1], "-trace")) {
 862             --argc;
 863             ++argv;
 864             xflags |= VMXF_TRACE;
 865         }
 866         else if (!strcmp(argv[1], "-profile")) {
 867             --argc;
 868             ++argv;
 869             xflags |= VMXF_PROFILE;
 870         }
 871         else if (!strcmp(argv[1], "-info")) {
 872             --argc;
 873             ++argv;
 874             opts_info = true;
 875             noexec = true;
 876         }
 877         else if (!strcmp(argv[1], "-disasm")) {
 878             --argc;
 879             ++argv;
 880             opts_disasm = true;
 881             noexec = true;
 882         }
 883         else if (!strcmp(argv[1], "-printdefs")) {
 884             --argc;
 885             ++argv;
 886             opts_printdefs = true;
 887             noexec = true;
 888         }
 889         else if (!strcmp(argv[1], "-printfuns")) {
 890             --argc;
 891             ++argv;
 892             opts_printfuns = true;
 893             noexec = true;
 894         }
 895         else if (!strcmp(argv[1], "-printfields")) {
 896             --argc;
 897             ++argv;
 898             opts_printfields = true;
 899             noexec = true;
 900         }
 901         else if (!strcmp(argv[1], "-vector") ||
 902                  !strcmp(argv[1], "-string") ||
 903                  !strcmp(argv[1], "-float") )
 904         {
 905             qcvm_parameter p;
 906             if (argv[1][1] == 'f')
 907                 p.vtype = TYPE_FLOAT;
 908             else if (argv[1][1] == 's')
 909                 p.vtype = TYPE_STRING;
 910             else if (argv[1][1] == 'v')
 911                 p.vtype = TYPE_VECTOR;
 912
 913             --argc;
 914             ++argv;
 915             if (argc < 3) {
 916                 usage();
 917                 exit(1);
 918             }
 919             p.value = argv[1];
 920
 921             vec_push(main_params, p);
 922             --argc;
 923             ++argv;
 924         }
 925         else
 926         {
 927             usage();
 928             exit(1);
 929         }
 930     }
 931
 932
 933     prog = prog_load(argv[1]);
 934     if (!prog) {
 935         printf("failed to load program '%s'\n", argv[1]);
 936         exit(1);
 937     }
 938
 939     prog->builtins       = qc_builtins;
 940     prog->builtins_count = qc_builtins_count;
 941
 942     if (opts_info) {
 943         printf("Program's system-checksum = 0x%04x\n", (unsigned int)prog->crc16);
 944         printf("Entity field space: %u\n", (unsigned int)prog->entityfields);
 945         printf("Globals: %u\n", (unsigned int)vec_size(prog->globals));
 946     }
 947
 948     if (opts_info) {
 949         prog_delete(prog);
 950         return 0;
 951     }
 952     if (opts_disasm) {
 953         for (i = 1; i < vec_size(prog->functions); ++i)
 954             prog_disasm_function(prog, i);
 955         return 0;
 956     }
 957     if (opts_printdefs) {
 958         for (i = 0; i < vec_size(prog->defs); ++i) {
 959             printf("Global: %8s %-16s at %u%s\n",
 960                    type_name[prog->defs[i].type & DEF_TYPEMASK],
 961                    prog_getstring(prog, prog->defs[i].name),
 962                    (unsigned int)prog->defs[i].offset,
 963                    ((prog->defs[i].type & DEF_SAVEGLOBAL) ? " [SAVE]" : ""));
 964         }
 965     }
 966     if (opts_printfields) {
 967         for (i = 0; i < vec_size(prog->fields); ++i) {
 968             printf("Field: %8s %-16s at %u%s\n",
 969                    type_name[prog->fields[i].type],
 970                    prog_getstring(prog, prog->fields[i].name),
 971                    (unsigned int)prog->fields[i].offset,
 972                    ((prog->fields[i].type & DEF_SAVEGLOBAL) ? " [SAVE]" : ""));
 973         }
 974     }
 975     if (opts_printfuns) {
 976         for (i = 0; i < vec_size(prog->functions); ++i) {
 977             int32_t a;
 978             printf("Function: %-16s taking %i parameters:(",
 979                    prog_getstring(prog, prog->functions[i].name),
 980                    (unsigned int)prog->functions[i].nargs);
 981             for (a = 0; a < prog->functions[i].nargs; ++a) {
 982                 printf(" %i", prog->functions[i].argsize[a]);
 983             }
 984             printf(") locals: %i + %i\n",
 985                    prog->functions[i].firstlocal,
 986                    prog->functions[i].locals);
 987         }
 988     }
 989     if (!noexec) {
 990         for (i = 1; i < vec_size(prog->functions); ++i) {
 991             const char *name = prog_getstring(prog, prog->functions[i].name);
 992             if (!strcmp(name, "main"))
 993                 fnmain = (qcint)i;
 994         }
 995         if (fnmain > 0)
 996         {
 997             prog_main_setparams(prog);
 998             prog_exec(prog, &prog->functions[fnmain], xflags, VM_JUMPS_DEFAULT);
 999         }
1000         else
1001             printf("No main function found\n");
1002     }
1003
1004     prog_delete(prog);
1005     return 0;
1006 }
1007
1008 void prog_disasm_function(qc_program *prog, size_t id)
1009 {
1010     prog_section_function *fdef = prog->functions + id;
1011     prog_section_statement *st;
1012
1013     if (fdef->entry < 0) {
1014         printf("FUNCTION \"%s\" = builtin #%i\n", prog_getstring(prog, fdef->name), (int)-fdef->entry);
1015         return;
1016     }
1017     else
1018         printf("FUNCTION \"%s\"\n", prog_getstring(prog, fdef->name));
1019
1020     st = prog->code + fdef->entry;
1021     while (st->opcode != INSTR_DONE) {
1022         prog_print_statement(prog, st);
1023         ++st;
1024     }
1025 }
1026 #endif
1027 #else /* !QCVM_LOOP */
1028 /*
1029  * Everything from here on is not including into the compilation of the
1030  * executor.  This is simply code that is #included via #include __FILE__
1031  * see when QCVM_LOOP is defined, the rest of the code above do not get
1032  * re-included.  So this really just acts like one large macro, but it
1033  * sort of isn't, which makes it nicer looking.
1034  */
1035
1036 #define OPA ( (qcany*) (prog->globals + st->o1.u1) )
1037 #define OPB ( (qcany*) (prog->globals + st->o2.u1) )
1038 #define OPC ( (qcany*) (prog->globals + st->o3.u1) )
1039
1040 #define GLOBAL(x) ( (qcany*) (prog->globals + (x)) )
1041
1042 /* to be consistent with current darkplaces behaviour */
1043 #if !defined(FLOAT_IS_TRUE_FOR_INT)
1044 #   define FLOAT_IS_TRUE_FOR_INT(x) ( (x) & 0x7FFFFFFF )
1045 #endif
1046
1047 while (1) {
1048     prog_section_function  *newf;
1049     qcany          *ed;
1050     qcany          *ptr;
1051
1052     ++st;
1053
1054 #if QCVM_PROFILE
1055     prog->profile[st - prog->code]++;
1056 #endif
1057
1058 #if QCVM_TRACE
1059     prog_print_statement(prog, st);
1060 #endif
1061
1062     switch (st->opcode)
1063     {
1064         default:
1065             qcvmerror(prog, "Illegal instruction in %s\n", prog->filename);
1066             goto cleanup;
1067
1068         case INSTR_DONE:
1069         case INSTR_RETURN:
1070             /* TODO: add instruction count to function profile count */
1071             GLOBAL(OFS_RETURN)->ivector[0] = OPA->ivector[0];
1072             GLOBAL(OFS_RETURN)->ivector[1] = OPA->ivector[1];
1073             GLOBAL(OFS_RETURN)->ivector[2] = OPA->ivector[2];
1074
1075             st = prog->code + prog_leavefunction(prog);
1076             if (!vec_size(prog->stack))
1077                 goto cleanup;
1078
1079             break;
1080
1081         case INSTR_MUL_F:
1082             OPC->_float = OPA->_float * OPB->_float;
1083             break;
1084         case INSTR_MUL_V:
1085             OPC->_float = OPA->vector[0]*OPB->vector[0] +
1086                           OPA->vector[1]*OPB->vector[1] +
1087                           OPA->vector[2]*OPB->vector[2];
1088             break;
1089         case INSTR_MUL_FV:
1090             OPC->vector[0] = OPA->_float * OPB->vector[0];
1091             OPC->vector[1] = OPA->_float * OPB->vector[1];
1092             OPC->vector[2] = OPA->_float * OPB->vector[2];
1093             break;
1094         case INSTR_MUL_VF:
1095             OPC->vector[0] = OPB->_float * OPA->vector[0];
1096             OPC->vector[1] = OPB->_float * OPA->vector[1];
1097             OPC->vector[2] = OPB->_float * OPA->vector[2];
1098             break;
1099         case INSTR_DIV_F:
1100             if (OPB->_float != 0.0f)
1101                 OPC->_float = OPA->_float / OPB->_float;
1102             else
1103                 OPC->_float = 0;
1104             break;
1105
1106         case INSTR_ADD_F:
1107             OPC->_float = OPA->_float + OPB->_float;
1108             break;
1109         case INSTR_ADD_V:
1110             OPC->vector[0] = OPA->vector[0] + OPB->vector[0];
1111             OPC->vector[1] = OPA->vector[1] + OPB->vector[1];
1112             OPC->vector[2] = OPA->vector[2] + OPB->vector[2];
1113             break;
1114         case INSTR_SUB_F:
1115             OPC->_float = OPA->_float - OPB->_float;
1116             break;
1117         case INSTR_SUB_V:
1118             OPC->vector[0] = OPA->vector[0] - OPB->vector[0];
1119             OPC->vector[1] = OPA->vector[1] - OPB->vector[1];
1120             OPC->vector[2] = OPA->vector[2] - OPB->vector[2];
1121             break;
1122
1123         case INSTR_EQ_F:
1124             OPC->_float = (OPA->_float == OPB->_float);
1125             break;
1126         case INSTR_EQ_V:
1127             OPC->_float = ((OPA->vector[0] == OPB->vector[0]) &&
1128                            (OPA->vector[1] == OPB->vector[1]) &&
1129                            (OPA->vector[2] == OPB->vector[2]) );
1130             break;
1131         case INSTR_EQ_S:
1132             OPC->_float = !strcmp(prog_getstring(prog, OPA->string),
1133                                   prog_getstring(prog, OPB->string));
1134             break;
1135         case INSTR_EQ_E:
1136             OPC->_float = (OPA->_int == OPB->_int);
1137             break;
1138         case INSTR_EQ_FNC:
1139             OPC->_float = (OPA->function == OPB->function);
1140             break;
1141         case INSTR_NE_F:
1142             OPC->_float = (OPA->_float != OPB->_float);
1143             break;
1144         case INSTR_NE_V:
1145             OPC->_float = ((OPA->vector[0] != OPB->vector[0]) ||
1146                            (OPA->vector[1] != OPB->vector[1]) ||
1147                            (OPA->vector[2] != OPB->vector[2]) );
1148             break;
1149         case INSTR_NE_S:
1150             OPC->_float = !!strcmp(prog_getstring(prog, OPA->string),
1151                                    prog_getstring(prog, OPB->string));
1152             break;
1153         case INSTR_NE_E:
1154             OPC->_float = (OPA->_int != OPB->_int);
1155             break;
1156         case INSTR_NE_FNC:
1157             OPC->_float = (OPA->function != OPB->function);
1158             break;
1159
1160         case INSTR_LE:
1161             OPC->_float = (OPA->_float <= OPB->_float);
1162             break;
1163         case INSTR_GE:
1164             OPC->_float = (OPA->_float >= OPB->_float);
1165             break;
1166         case INSTR_LT:
1167             OPC->_float = (OPA->_float < OPB->_float);
1168             break;
1169         case INSTR_GT:
1170             OPC->_float = (OPA->_float > OPB->_float);
1171             break;
1172
1173         case INSTR_LOAD_F:
1174         case INSTR_LOAD_S:
1175         case INSTR_LOAD_FLD:
1176         case INSTR_LOAD_ENT:
1177         case INSTR_LOAD_FNC:
1178             if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1179                 qcvmerror(prog, "progs `%s` attempted to read an out of bounds entity", prog->filename);
1180                 goto cleanup;
1181             }
1182             if ((unsigned int)(OPB->_int) >= (unsigned int)(prog->entityfields)) {
1183                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1184                           prog->filename,
1185                           OPB->_int);
1186                 goto cleanup;
1187             }
1188             ed = prog_getedict(prog, OPA->edict);
1189             OPC->_int = ((qcany*)( ((qcint*)ed) + OPB->_int ))->_int;
1190             break;
1191         case INSTR_LOAD_V:
1192             if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1193                 qcvmerror(prog, "progs `%s` attempted to read an out of bounds entity", prog->filename);
1194                 goto cleanup;
1195             }
1196             if (OPB->_int < 0 || OPB->_int + 3 > (qcint)prog->entityfields)
1197             {
1198                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1199                           prog->filename,
1200                           OPB->_int + 2);
1201                 goto cleanup;
1202             }
1203             ed = prog_getedict(prog, OPA->edict);
1204             OPC->ivector[0] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[0];
1205             OPC->ivector[1] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[1];
1206             OPC->ivector[2] = ((qcany*)( ((qcint*)ed) + OPB->_int ))->ivector[2];
1207             break;
1208
1209         case INSTR_ADDRESS:
1210             if (OPA->edict < 0 || OPA->edict >= prog->entities) {
1211                 qcvmerror(prog, "prog `%s` attempted to address an out of bounds entity %i", prog->filename, OPA->edict);
1212                 goto cleanup;
1213             }
1214             if ((unsigned int)(OPB->_int) >= (unsigned int)(prog->entityfields))
1215             {
1216                 qcvmerror(prog, "prog `%s` attempted to read an invalid field from entity (%i)",
1217                           prog->filename,
1218                           OPB->_int);
1219                 goto cleanup;
1220             }
1221
1222             ed = prog_getedict(prog, OPA->edict);
1223             OPC->_int = ((qcint*)ed) - prog->entitydata + OPB->_int;
1224             break;
1225
1226         case INSTR_STORE_F:
1227         case INSTR_STORE_S:
1228         case INSTR_STORE_ENT:
1229         case INSTR_STORE_FLD:
1230         case INSTR_STORE_FNC:
1231             OPB->_int = OPA->_int;
1232             break;
1233         case INSTR_STORE_V:
1234             OPB->ivector[0] = OPA->ivector[0];
1235             OPB->ivector[1] = OPA->ivector[1];
1236             OPB->ivector[2] = OPA->ivector[2];
1237             break;
1238
1239         case INSTR_STOREP_F:
1240         case INSTR_STOREP_S:
1241         case INSTR_STOREP_ENT:
1242         case INSTR_STOREP_FLD:
1243         case INSTR_STOREP_FNC:
1244             if (OPB->_int < 0 || OPB->_int >= (qcint)vec_size(prog->entitydata)) {
1245                 qcvmerror(prog, "`%s` attempted to write to an out of bounds edict (%i)", prog->filename, OPB->_int);
1246                 goto cleanup;
1247             }
1248             if (OPB->_int < (qcint)prog->entityfields && !prog->allowworldwrites)
1249                 qcvmerror(prog, "`%s` tried to assign to world.%s (field %i)\n",
1250                           prog->filename,
1251                           prog_getstring(prog, prog_entfield(prog, OPB->_int)->name),
1252                           OPB->_int);
1253             ptr = (qcany*)(prog->entitydata + OPB->_int);
1254             ptr->_int = OPA->_int;
1255             break;
1256         case INSTR_STOREP_V:
1257             if (OPB->_int < 0 || OPB->_int + 2 >= (qcint)vec_size(prog->entitydata)) {
1258                 qcvmerror(prog, "`%s` attempted to write to an out of bounds edict (%i)", prog->filename, OPB->_int);
1259                 goto cleanup;
1260             }
1261             if (OPB->_int < (qcint)prog->entityfields && !prog->allowworldwrites)
1262                 qcvmerror(prog, "`%s` tried to assign to world.%s (field %i)\n",
1263                           prog->filename,
1264                           prog_getstring(prog, prog_entfield(prog, OPB->_int)->name),
1265                           OPB->_int);
1266             ptr = (qcany*)(prog->entitydata + OPB->_int);
1267             ptr->ivector[0] = OPA->ivector[0];
1268             ptr->ivector[1] = OPA->ivector[1];
1269             ptr->ivector[2] = OPA->ivector[2];
1270             break;
1271
1272         case INSTR_NOT_F:
1273             OPC->_float = !FLOAT_IS_TRUE_FOR_INT(OPA->_int);
1274             break;
1275         case INSTR_NOT_V:
1276             OPC->_float = !OPA->vector[0] &&
1277                           !OPA->vector[1] &&
1278                           !OPA->vector[2];
1279             break;
1280         case INSTR_NOT_S:
1281             OPC->_float = !OPA->string ||
1282                           !*prog_getstring(prog, OPA->string);
1283             break;
1284         case INSTR_NOT_ENT:
1285             OPC->_float = (OPA->edict == 0);
1286             break;
1287         case INSTR_NOT_FNC:
1288             OPC->_float = !OPA->function;
1289             break;
1290
1291         case INSTR_IF:
1292             /* this is consistent with darkplaces' behaviour */
1293             if(FLOAT_IS_TRUE_FOR_INT(OPA->_int))
1294             {
1295                 st += st->o2.s1 - 1;    /* offset the s++ */
1296                 if (++jumpcount >= maxjumps)
1297                     qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1298             }
1299             break;
1300         case INSTR_IFNOT:
1301             if(!FLOAT_IS_TRUE_FOR_INT(OPA->_int))
1302             {
1303                 st += st->o2.s1 - 1;    /* offset the s++ */
1304                 if (++jumpcount >= maxjumps)
1305                     qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1306             }
1307             break;
1308
1309         case INSTR_CALL0:
1310         case INSTR_CALL1:
1311         case INSTR_CALL2:
1312         case INSTR_CALL3:
1313         case INSTR_CALL4:
1314         case INSTR_CALL5:
1315         case INSTR_CALL6:
1316         case INSTR_CALL7:
1317         case INSTR_CALL8:
1318             prog->argc = st->opcode - INSTR_CALL0;
1319             if (!OPA->function)
1320                 qcvmerror(prog, "NULL function in `%s`", prog->filename);
1321
1322             if(!OPA->function || OPA->function >= (qcint)vec_size(prog->functions))
1323             {
1324                 qcvmerror(prog, "CALL outside the program in `%s`", prog->filename);
1325                 goto cleanup;
1326             }
1327
1328             newf = &prog->functions[OPA->function];
1329             newf->profile++;
1330
1331             prog->statement = (st - prog->code) + 1;
1332
1333             if (newf->entry < 0)
1334             {
1335                 /* negative statements are built in functions */
1336                 qcint builtinnumber = -newf->entry;
1337                 if (builtinnumber < (qcint)prog->builtins_count && prog->builtins[builtinnumber])
1338                     prog->builtins[builtinnumber](prog);
1339                 else
1340                     qcvmerror(prog, "No such builtin #%i in %s! Try updating your gmqcc sources",
1341                               builtinnumber, prog->filename);
1342             }
1343             else
1344                 st = prog->code + prog_enterfunction(prog, newf) - 1; /* offset st++ */
1345             if (prog->vmerror)
1346                 goto cleanup;
1347             break;
1348
1349         case INSTR_STATE:
1350             qcvmerror(prog, "`%s` tried to execute a STATE operation", prog->filename);
1351             break;
1352
1353         case INSTR_GOTO:
1354             st += st->o1.s1 - 1;    /* offset the s++ */
1355             if (++jumpcount == 10000000)
1356                 qcvmerror(prog, "`%s` hit the runaway loop counter limit of %li jumps", prog->filename, jumpcount);
1357             break;
1358
1359         case INSTR_AND:
1360             OPC->_float = FLOAT_IS_TRUE_FOR_INT(OPA->_int) &&
1361                           FLOAT_IS_TRUE_FOR_INT(OPB->_int);
1362             break;
1363         case INSTR_OR:
1364             OPC->_float = FLOAT_IS_TRUE_FOR_INT(OPA->_int) ||
1365                           FLOAT_IS_TRUE_FOR_INT(OPB->_int);
1366             break;
1367
1368         case INSTR_BITAND:
1369             OPC->_float = ((int)OPA->_float) & ((int)OPB->_float);
1370             break;
1371         case INSTR_BITOR:
1372             OPC->_float = ((int)OPA->_float) | ((int)OPB->_float);
1373             break;
1374     }
1375 }
1376
1377 #undef QCVM_PROFILE
1378 #undef QCVM_TRACE
1379 #endif /* !QCVM_LOOP */