prvm_exec.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20
  21 #include "quakedef.h"
  22 #include "progsvm.h"
  23
  24 char *prvm_opnames[] =
  25 {
  26 "^5DONE",
  27
  28 "MUL_F",
  29 "MUL_V",
  30 "MUL_FV",
  31 "MUL_VF",
  32
  33 "DIV",
  34
  35 "ADD_F",
  36 "ADD_V",
  37
  38 "SUB_F",
  39 "SUB_V",
  40
  41 "^2EQ_F",
  42 "^2EQ_V",
  43 "^2EQ_S",
  44 "^2EQ_E",
  45 "^2EQ_FNC",
  46
  47 "^2NE_F",
  48 "^2NE_V",
  49 "^2NE_S",
  50 "^2NE_E",
  51 "^2NE_FNC",
  52
  53 "^2LE",
  54 "^2GE",
  55 "^2LT",
  56 "^2GT",
  57
  58 "^6FIELD_F",
  59 "^6FIELD_V",
  60 "^6FIELD_S",
  61 "^6FIELD_ENT",
  62 "^6FIELD_FLD",
  63 "^6FIELD_FNC",
  64
  65 "^1ADDRESS",
  66
  67 "STORE_F",
  68 "STORE_V",
  69 "STORE_S",
  70 "STORE_ENT",
  71 "STORE_FLD",
  72 "STORE_FNC",
  73
  74 "^1STOREP_F",
  75 "^1STOREP_V",
  76 "^1STOREP_S",
  77 "^1STOREP_ENT",
  78 "^1STOREP_FLD",
  79 "^1STOREP_FNC",
  80
  81 "^5RETURN",
  82
  83 "^2NOT_F",
  84 "^2NOT_V",
  85 "^2NOT_S",
  86 "^2NOT_ENT",
  87 "^2NOT_FNC",
  88
  89 "^5IF",
  90 "^5IFNOT",
  91
  92 "^3CALL0",
  93 "^3CALL1",
  94 "^3CALL2",
  95 "^3CALL3",
  96 "^3CALL4",
  97 "^3CALL5",
  98 "^3CALL6",
  99 "^3CALL7",
 100 "^3CALL8",
 101
 102 "^1STATE",
 103
 104 "^5GOTO",
 105
 106 "^2AND",
 107 "^2OR",
 108
 109 "BITAND",
 110 "BITOR",
 111 "OP_MULSTORE_F",
 112 "OP_MULSTORE_V",
 113 "OP_MULSTOREP_F",
 114 "OP_MULSTOREP_V",
 115
 116 "OP_DIVSTORE_F",        //70
 117 "OP_DIVSTOREP_F",
 118
 119 "OP_ADDSTORE_F",
 120 "OP_ADDSTORE_V",
 121 "OP_ADDSTOREP_F",
 122 "OP_ADDSTOREP_V",
 123
 124 "OP_SUBSTORE_F",
 125 "OP_SUBSTORE_V",
 126 "OP_SUBSTOREP_F",
 127 "OP_SUBSTOREP_V",
 128
 129 "OP_FETCH_GBL_F",       //80
 130 "OP_FETCH_GBL_V",
 131 "OP_FETCH_GBL_S",
 132 "OP_FETCH_GBL_E",
 133 "OP_FETCH_GBL_FNC",
 134
 135 "OP_CSTATE",
 136 "OP_CWSTATE",
 137
 138 "OP_THINKTIME",
 139
 140 "OP_BITSET",
 141 "OP_BITSETP",
 142 "OP_BITCLR",            //90
 143 "OP_BITCLRP",
 144
 145 "OP_RAND0",
 146 "OP_RAND1",
 147 "OP_RAND2",
 148 "OP_RANDV0",
 149 "OP_RANDV1",
 150 "OP_RANDV2",
 151
 152 "OP_SWITCH_F",
 153 "OP_SWITCH_V",
 154 "OP_SWITCH_S",  //100
 155 "OP_SWITCH_E",
 156 "OP_SWITCH_FNC",
 157
 158 "OP_CASE",
 159 "OP_CASERANGE",
 160
 161
 162
 163
 164
 165         //the rest are added
 166         //mostly they are various different ways of adding two vars with conversions.
 167
 168 "OP_CALL1H",
 169 "OP_CALL2H",
 170 "OP_CALL3H",
 171 "OP_CALL4H",
 172 "OP_CALL5H",
 173 "OP_CALL6H",            //110
 174 "OP_CALL7H",
 175 "OP_CALL8H",
 176
 177
 178 "OP_STORE_I",
 179 "OP_STORE_IF",
 180 "OP_STORE_FI",
 181
 182 "OP_ADD_I",
 183 "OP_ADD_FI",
 184 "OP_ADD_IF",            //110
 185
 186 "OP_SUB_I",
 187 "OP_SUB_FI",
 188 "OP_SUB_IF",
 189
 190 "OP_CONV_ITOF",
 191 "OP_CONV_FTOI",
 192 "OP_CP_ITOF",
 193 "OP_CP_FTOI",
 194 "OP_LOAD_I",
 195 "OP_STOREP_I",
 196 "OP_STOREP_IF", //120
 197 "OP_STOREP_FI",
 198
 199 "OP_BITAND_I",
 200 "OP_BITOR_I",
 201
 202 "OP_MUL_I",
 203 "OP_DIV_I",
 204 "OP_EQ_I",
 205 "OP_NE_I",
 206
 207 "OP_IFNOTS",
 208 "OP_IFS",
 209
 210 "OP_NOT_I",             //130
 211
 212 "OP_DIV_VF",
 213
 214 "OP_XOR_I",
 215 "OP_RSHIFT_I",
 216 "OP_LSHIFT_I",
 217
 218 "OP_GLOBALADDRESS",
 219 "OP_POINTER_ADD",       //32 bit pointers
 220
 221 "OP_LOADA_F",
 222 "OP_LOADA_V",
 223 "OP_LOADA_S",
 224 "OP_LOADA_ENT", //140
 225 "OP_LOADA_FLD",
 226 "OP_LOADA_FNC",
 227 "OP_LOADA_I",
 228
 229 "OP_STORE_P",
 230 "OP_LOAD_P",
 231
 232 "OP_LOADP_F",
 233 "OP_LOADP_V",
 234 "OP_LOADP_S",
 235 "OP_LOADP_ENT",
 236 "OP_LOADP_FLD", //150
 237 "OP_LOADP_FNC",
 238 "OP_LOADP_I",
 239
 240 "OP_LE_I",
 241 "OP_GE_I",
 242 "OP_LT_I",
 243 "OP_GT_I",
 244
 245 "OP_LE_IF",
 246 "OP_GE_IF",
 247 "OP_LT_IF",
 248 "OP_GT_IF",             //160
 249
 250 "OP_LE_FI",
 251 "OP_GE_FI",
 252 "OP_LT_FI",
 253 "OP_GT_FI",
 254
 255 "OP_EQ_IF",
 256 "OP_EQ_FI",
 257
 258         //-------------------------------------
 259         //string manipulation.
 260 "OP_ADD_SF",    //(char*)c = (char*)a + (float)b
 261 "OP_SUB_S",     //(float)c = (char*)a - (char*)b
 262 "OP_STOREP_C",//(float)c = *(char*)b = (float)a
 263 "OP_LOADP_C",   //(float)c = *(char*)                                   //170
 264         //-------------------------------------
 265
 266
 267 "OP_MUL_IF",
 268 "OP_MUL_FI",
 269 "OP_MUL_VI",
 270 "OP_MUL_IV",
 271 "OP_DIV_IF",
 272 "OP_DIV_FI",
 273 "OP_BITAND_IF",
 274 "OP_BITOR_IF",
 275 "OP_BITAND_FI",
 276 "OP_BITOR_FI",          //180
 277 "OP_AND_I",
 278 "OP_OR_I",
 279 "OP_AND_IF",
 280 "OP_OR_IF",
 281 "OP_AND_FI",
 282 "OP_OR_FI",
 283 "OP_NE_IF",
 284 "OP_NE_FI",
 285
 286 //erm... FTEQCC doesn't make use of these... These are for DP.
 287 "OP_GSTOREP_I",
 288 "OP_GSTOREP_F",         //190
 289 "OP_GSTOREP_ENT",
 290 "OP_GSTOREP_FLD",               // integers
 291 "OP_GSTOREP_S",
 292 "OP_GSTOREP_FNC",               // pointers
 293 "OP_GSTOREP_V",
 294 "OP_GADDRESS",
 295 "OP_GLOAD_I",
 296 "OP_GLOAD_F",
 297 "OP_GLOAD_FLD",
 298 "OP_GLOAD_ENT",         //200
 299 "OP_GLOAD_S",
 300 "OP_GLOAD_FNC",
 301 "OP_BOUNDCHECK",
 302
 303 //back to ones that we do use.
 304 "OP_STOREP_P",
 305 "OP_PUSH",      //push 4octets onto the local-stack (which is ALWAYS poped on function return). Returns a pointer.
 306 "OP_POP",               //pop those ones that were pushed (don't over do it). Needs assembler.
 307
 308 "^5OP_IF_I",
 309 "^5OP_IFNOT_I",
 310
 311 "OP_NUMOPS"
 312 };
 313
 314 char *PRVM_GlobalString (int ofs);
 315 char *PRVM_GlobalStringNoContents (int ofs);
 316 extern ddef_t *PRVM_ED_FieldAtOfs(int ofs);
 317
 318
 319 //=============================================================================
 320
 321 /*
 322 =================
 323 PRVM_PrintStatement
 324 =================
 325 */
 326 extern cvar_t prvm_statementprofiling;
 327 void PRVM_PrintStatement (dstatement_t *s)
 328 {
 329         size_t i;
 330         int opnum = (int)(s - prog->statements);
 331
 332         Con_Printf("s%i: ", opnum);
 333         if( prog->statement_linenums )
 334                 Con_Printf( "%s:%i: ", PRVM_GetString( prog->xfunction->s_file ), prog->statement_linenums[ opnum ] );
 335
 336         if (prvm_statementprofiling.integer)
 337                 Con_Printf("%7.0f ", prog->statement_profile[s - prog->statements]);
 338
 339         if ( (unsigned)s->op < sizeof(prvm_opnames)/sizeof(prvm_opnames[0]))
 340         {
 341                 Con_Printf("%s ",  prvm_opnames[s->op]);
 342                 i = strlen(prvm_opnames[s->op]);
 343                 // don't count a preceding color tag when padding the name
 344                 if (prvm_opnames[s->op][0] == STRING_COLOR_TAG)
 345                         i -= 2;
 346                 for ( ; i<10 ; i++)
 347                         Con_Print(" ");
 348         }
 349         if (s->op == OP_IF || s->op == OP_IFNOT)
 350                 Con_Printf("%s, s%i",PRVM_GlobalString((unsigned short) s->a),(signed short)s->b + opnum);
 351         else if (s->op == OP_GOTO)
 352                 Con_Printf("s%i",(signed short)s->a + opnum);
 353         else if ( (unsigned)(s->op - OP_STORE_F) < 6)
 354         {
 355                 Con_Print(PRVM_GlobalString((unsigned short) s->a));
 356                 Con_Print(", ");
 357                 Con_Print(PRVM_GlobalStringNoContents((unsigned short) s->b));
 358         }
 359         else if (s->op == OP_ADDRESS || (unsigned)(s->op - OP_LOAD_F) < 6)
 360         {
 361                 if (s->a)
 362                         Con_Print(PRVM_GlobalString((unsigned short) s->a));
 363                 if (s->b)
 364                 {
 365                         Con_Print(", ");
 366                         Con_Print(PRVM_GlobalStringNoContents((unsigned short) s->b));
 367                 }
 368                 if (s->c)
 369                 {
 370                         Con_Print(", ");
 371                         Con_Print(PRVM_GlobalStringNoContents((unsigned short) s->c));
 372                 }
 373         }
 374         else
 375         {
 376                 if (s->a)
 377                         Con_Print(PRVM_GlobalString((unsigned short) s->a));
 378                 if (s->b)
 379                 {
 380                         Con_Print(", ");
 381                         Con_Print(PRVM_GlobalString((unsigned short) s->b));
 382                 }
 383                 if (s->c)
 384                 {
 385                         if(!s->b) // added for debugging --blub
 386                                 Con_Print(", (nil)");
 387                         Con_Print(", ");
 388                         Con_Print(PRVM_GlobalStringNoContents((unsigned short) s->c));
 389                 }
 390         }
 391         Con_Print("\n");
 392 }
 393
 394 void PRVM_PrintFunctionStatements (const char *name)
 395 {
 396         int i, firststatement, endstatement;
 397         mfunction_t *func;
 398         func = PRVM_ED_FindFunction (name);
 399         if (!func)
 400         {
 401                 Con_Printf("%s progs: no function named %s\n", PRVM_NAME, name);
 402                 return;
 403         }
 404         firststatement = func->first_statement;
 405         if (firststatement < 0)
 406         {
 407                 Con_Printf("%s progs: function %s is builtin #%i\n", PRVM_NAME, name, -firststatement);
 408                 return;
 409         }
 410
 411         // find the end statement
 412         endstatement = prog->progs->numstatements;
 413         for (i = 0;i < prog->progs->numfunctions;i++)
 414                 if (endstatement > prog->functions[i].first_statement && firststatement < prog->functions[i].first_statement)
 415                         endstatement = prog->functions[i].first_statement;
 416
 417         // now print the range of statements
 418         Con_Printf("%s progs: disassembly of function %s (statements %i-%i, locals %i-%i):\n", PRVM_NAME, name, firststatement, endstatement, func->parm_start, func->parm_start + func->locals - 1);
 419         for (i = firststatement;i < endstatement;i++)
 420         {
 421                 PRVM_PrintStatement(prog->statements + i);
 422                 prog->statement_profile[i] = 0;
 423         }
 424 }
 425
 426 /*
 427 ============
 428 PRVM_PrintFunction_f
 429
 430 ============
 431 */
 432 void PRVM_PrintFunction_f (void)
 433 {
 434         if (Cmd_Argc() != 3)
 435         {
 436                 Con_Printf("usage: prvm_printfunction <program name> <function name>\n");
 437                 return;
 438         }
 439
 440         PRVM_Begin;
 441         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 442                 return;
 443
 444         PRVM_PrintFunctionStatements(Cmd_Argv(2));
 445
 446         PRVM_End;
 447 }
 448
 449 /*
 450 ============
 451 PRVM_StackTrace
 452 ============
 453 */
 454 void PRVM_StackTrace (void)
 455 {
 456         mfunction_t     *f;
 457         int                     i;
 458
 459         prog->stack[prog->depth].s = prog->xstatement;
 460         prog->stack[prog->depth].f = prog->xfunction;
 461         for (i = prog->depth;i > 0;i--)
 462         {
 463                 f = prog->stack[i].f;
 464
 465                 if (!f)
 466                         Con_Print("<NULL FUNCTION>\n");
 467                 else
 468                         Con_Printf("%12s : %s : statement %i\n", PRVM_GetString(f->s_file), PRVM_GetString(f->s_name), prog->stack[i].s - f->first_statement);
 469         }
 470 }
 471
 472 void PRVM_ShortStackTrace(char *buf, size_t bufsize)
 473 {
 474         mfunction_t     *f;
 475         int                     i;
 476
 477         if(prog)
 478         {
 479                 dpsnprintf(buf, bufsize, "(%s) ", prog->name);
 480         }
 481         else
 482         {
 483                 strlcpy(buf, "<NO PROG>", bufsize);
 484                 return;
 485         }
 486
 487         prog->stack[prog->depth].s = prog->xstatement;
 488         prog->stack[prog->depth].f = prog->xfunction;
 489         for (i = prog->depth;i > 0;i--)
 490         {
 491                 f = prog->stack[i].f;
 492
 493                 if(strlcat(buf,
 494                         f
 495                                 ? va("%s:%s(%i) ", PRVM_GetString(f->s_file), PRVM_GetString(f->s_name), prog->stack[i].s - f->first_statement)
 496                                 : "<NULL> ",
 497                         bufsize
 498                 ) >= bufsize)
 499                         break;
 500         }
 501 }
 502
 503
 504 void PRVM_CallProfile (void)
 505 {
 506         mfunction_t *f, *best;
 507         int i;
 508         double max;
 509         double sum;
 510
 511         Con_Printf( "%s Call Profile:\n", PRVM_NAME );
 512
 513         sum = 0;
 514         do
 515         {
 516                 max = 0;
 517                 best = NULL;
 518                 for (i=0 ; i<prog->progs->numfunctions ; i++)
 519                 {
 520                         f = &prog->functions[i];
 521                         if (max < f->totaltime)
 522                         {
 523                                 max = f->totaltime;
 524                                 best = f;
 525                         }
 526                 }
 527                 if (best)
 528                 {
 529                         sum += best->totaltime;
 530                         Con_Printf("%9.4f %s\n", best->totaltime, PRVM_GetString(best->s_name));
 531                         best->totaltime = 0;
 532                 }
 533         } while (best);
 534
 535         Con_Printf("Total time since last profile reset: %9.4f\n", Sys_DoubleTime() - prog->starttime);
 536         Con_Printf("       - used by QC code of this VM: %9.4f\n", sum);
 537
 538         prog->starttime = Sys_DoubleTime();
 539 }
 540
 541 void PRVM_Profile (int maxfunctions, int mininstructions, int sortby)
 542 {
 543         mfunction_t *f, *best;
 544         int i, num;
 545         double max;
 546
 547         Con_Printf( "%s Profile:\n[CallCount] [Statement] [BuiltinCt] [StmtTotal] [BltnTotal] [self]\n", PRVM_NAME );
 548         //                        12345678901 12345678901 12345678901 12345678901 12345678901 123.45%
 549
 550         num = 0;
 551         do
 552         {
 553                 max = 0;
 554                 best = NULL;
 555                 for (i=0 ; i<prog->progs->numfunctions ; i++)
 556                 {
 557                         f = &prog->functions[i];
 558                         if(sortby)
 559                         {
 560                                 if (max < f->profile_total + f->builtinsprofile_total + f->callcount)
 561                                 {
 562                                         max = f->profile_total + f->builtinsprofile_total + f->callcount;
 563                                         best = f;
 564                                 }
 565                         }
 566                         else
 567                         {
 568                                 if (max < f->profile + f->builtinsprofile + f->callcount)
 569                                 {
 570                                         max = f->profile + f->builtinsprofile + f->callcount;
 571                                         best = f;
 572                                 }
 573                         }
 574                 }
 575                 if (best)
 576                 {
 577                         if (num < maxfunctions && max >= mininstructions)
 578                         {
 579                                 if (best->first_statement < 0)
 580                                         Con_Printf("%11.0f ----------------------- builtin ----------------------- %s\n", best->callcount, PRVM_GetString(best->s_name));
 581                                         //                 12345678901 12345678901 12345678901 12345678901 123.45%
 582                                 else
 583                                         Con_Printf("%11.0f %11.0f %11.0f %11.0f %11.0f %6.2f%% %s\n", best->callcount, best->profile, best->builtinsprofile, best->profile_total, best->builtinsprofile_total, (best->profile + best->builtinsprofile) * 100.0 / (best->profile_total + best->builtinsprofile_total), PRVM_GetString(best->s_name));
 584                         }
 585                         num++;
 586                         best->profile = 0;
 587                         best->builtinsprofile = 0;
 588                         best->profile_total = 0;
 589                         best->builtinsprofile_total = 0;
 590                         best->callcount = 0;
 591                 }
 592         } while (best);
 593 }
 594
 595 /*
 596 ============
 597 PRVM_CallProfile_f
 598
 599 ============
 600 */
 601 void PRVM_CallProfile_f (void)
 602 {
 603         if (Cmd_Argc() != 2)
 604         {
 605                 Con_Print("prvm_callprofile <program name>\n");
 606                 return;
 607         }
 608
 609         PRVM_Begin;
 610         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 611                 return;
 612
 613         PRVM_CallProfile();
 614
 615         PRVM_End;
 616 }
 617
 618 /*
 619 ============
 620 PRVM_Profile_f
 621
 622 ============
 623 */
 624 void PRVM_Profile_f (void)
 625 {
 626         int howmany;
 627
 628         howmany = 1<<30;
 629         if (Cmd_Argc() == 3)
 630                 howmany = atoi(Cmd_Argv(2));
 631         else if (Cmd_Argc() != 2)
 632         {
 633                 Con_Print("prvm_profile <program name>\n");
 634                 return;
 635         }
 636
 637         PRVM_Begin;
 638         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 639                 return;
 640
 641         PRVM_Profile(howmany, 1, 0);
 642
 643         PRVM_End;
 644 }
 645
 646 void PRVM_ChildProfile_f (void)
 647 {
 648         int howmany;
 649
 650         howmany = 1<<30;
 651         if (Cmd_Argc() == 3)
 652                 howmany = atoi(Cmd_Argv(2));
 653         else if (Cmd_Argc() != 2)
 654         {
 655                 Con_Print("prvm_childprofile <program name>\n");
 656                 return;
 657         }
 658
 659         PRVM_Begin;
 660         if(!PRVM_SetProgFromString(Cmd_Argv(1)))
 661                 return;
 662
 663         PRVM_Profile(howmany, 1, 1);
 664
 665         PRVM_End;
 666 }
 667
 668 void PRVM_CrashAll(void)
 669 {
 670         int i;
 671         prvm_prog_t *oldprog = prog;
 672
 673         for(i = 0; i < PRVM_MAXPROGS; i++)
 674         {
 675                 if(!PRVM_ProgLoaded(i))
 676                         continue;
 677                 PRVM_SetProg(i);
 678                 PRVM_Crash();
 679         }
 680
 681         prog = oldprog;
 682 }
 683
 684 void PRVM_PrintState(void)
 685 {
 686         int i;
 687         if(prog->statestring)
 688         {
 689                 Con_Printf("Caller-provided information: %s\n", prog->statestring);
 690         }
 691         if (prog->xfunction)
 692         {
 693                 for (i = -7; i <= 0;i++)
 694                         if (prog->xstatement + i >= prog->xfunction->first_statement)
 695                                 PRVM_PrintStatement (prog->statements + prog->xstatement + i);
 696         }
 697         else
 698                 Con_Print("null function executing??\n");
 699         PRVM_StackTrace ();
 700 }
 701
 702 extern sizebuf_t vm_tempstringsbuf;
 703 extern cvar_t prvm_errordump;
 704 void Host_Savegame_to (const char *name);
 705 void PRVM_Crash(void)
 706 {
 707         if (prog == NULL)
 708                 return;
 709
 710         prog->funcoffsets.SV_Shutdown = 0; // don't call SV_Shutdown on crash
 711
 712         if( prog->depth > 0 )
 713         {
 714                 Con_Printf("QuakeC crash report for %s:\n", PRVM_NAME);
 715                 PRVM_PrintState();
 716         }
 717
 718         if(prvm_errordump.integer)
 719         {
 720                 // make a savegame
 721                 Host_Savegame_to(va("crash-%s.dmp", PRVM_NAME));
 722         }
 723
 724         // dump the stack so host_error can shutdown functions
 725         prog->depth = 0;
 726         prog->localstack_used = 0;
 727
 728         // delete all tempstrings (FIXME: is this safe in VM->engine->VM recursion?)
 729         vm_tempstringsbuf.cursize = 0;
 730
 731         // reset the prog pointer
 732         prog = NULL;
 733 }
 734
 735 /*
 736 ============================================================================
 737 PRVM_ExecuteProgram
 738
 739 The interpretation main loop
 740 ============================================================================
 741 */
 742
 743 /*
 744 ====================
 745 PRVM_EnterFunction
 746
 747 Returns the new program statement counter
 748 ====================
 749 */
 750 int PRVM_EnterFunction (mfunction_t *f)
 751 {
 752         int             i, j, c, o;
 753
 754         if (!f)
 755                 PRVM_ERROR ("PRVM_EnterFunction: NULL function in %s", PRVM_NAME);
 756
 757         prog->stack[prog->depth].s = prog->xstatement;
 758         prog->stack[prog->depth].f = prog->xfunction;
 759         prog->stack[prog->depth].profile_acc = -f->profile;
 760         prog->stack[prog->depth].builtinsprofile_acc = -f->builtinsprofile;
 761         prog->depth++;
 762         if (prog->depth >=PRVM_MAX_STACK_DEPTH)
 763                 PRVM_ERROR ("stack overflow");
 764
 765 // save off any locals that the new function steps on
 766         c = f->locals;
 767         if (prog->localstack_used + c > PRVM_LOCALSTACK_SIZE)
 768                 PRVM_ERROR ("PRVM_ExecuteProgram: locals stack overflow in %s", PRVM_NAME);
 769
 770         for (i=0 ; i < c ; i++)
 771                 prog->localstack[prog->localstack_used+i] = ((int *)prog->globals.generic)[f->parm_start + i];
 772         prog->localstack_used += c;
 773
 774 // copy parameters
 775         o = f->parm_start;
 776         for (i=0 ; i<f->numparms ; i++)
 777         {
 778                 for (j=0 ; j<f->parm_size[i] ; j++)
 779                 {
 780                         ((int *)prog->globals.generic)[o] = ((int *)prog->globals.generic)[OFS_PARM0+i*3+j];
 781                         o++;
 782                 }
 783         }
 784
 785         ++f->recursion;
 786         prog->xfunction = f;
 787         return f->first_statement - 1;  // offset the s++
 788 }
 789
 790 /*
 791 ====================
 792 PRVM_LeaveFunction
 793 ====================
 794 */
 795 int PRVM_LeaveFunction (void)
 796 {
 797         int             i, c;
 798         mfunction_t *f;
 799
 800         if (prog->depth <= 0)
 801                 PRVM_ERROR ("prog stack underflow in %s", PRVM_NAME);
 802
 803         if (!prog->xfunction)
 804                 PRVM_ERROR ("PR_LeaveFunction: NULL function in %s", PRVM_NAME);
 805 // restore locals from the stack
 806         c = prog->xfunction->locals;
 807         prog->localstack_used -= c;
 808         if (prog->localstack_used < 0)
 809                 PRVM_ERROR ("PRVM_ExecuteProgram: locals stack underflow in %s", PRVM_NAME);
 810
 811         for (i=0 ; i < c ; i++)
 812                 ((int *)prog->globals.generic)[prog->xfunction->parm_start + i] = prog->localstack[prog->localstack_used+i];
 813
 814 // up stack
 815         prog->depth--;
 816         f = prog->xfunction;
 817         --f->recursion;
 818         prog->xfunction = prog->stack[prog->depth].f;
 819         prog->stack[prog->depth].profile_acc += f->profile;
 820         prog->stack[prog->depth].builtinsprofile_acc += f->builtinsprofile;
 821         if(prog->depth > 0)
 822         {
 823                 prog->stack[prog->depth-1].profile_acc += prog->stack[prog->depth].profile_acc;
 824                 prog->stack[prog->depth-1].builtinsprofile_acc += prog->stack[prog->depth].builtinsprofile_acc;
 825         }
 826         if(!f->recursion)
 827         {
 828                 // if f is already on the call stack...
 829                 // we cannot add this profile data to it now
 830                 // or we would add it more than once
 831                 // so, let's only add to the function's profile if it is the outermost call
 832                 f->profile_total += prog->stack[prog->depth].profile_acc;
 833                 f->builtinsprofile_total += prog->stack[prog->depth].builtinsprofile_acc;
 834         }
 835
 836         return prog->stack[prog->depth].s;
 837 }
 838
 839 void PRVM_Init_Exec(void)
 840 {
 841         // dump the stack
 842         prog->depth = 0;
 843         prog->localstack_used = 0;
 844         // reset the string table
 845         // nothing here yet
 846 }
 847
 848 void CStateOp(prvm_prog_t *prog, float vara, float varb, mfunction_t *currentFunc)
 849 {
 850         // This function should not be called...
 851         PRVM_ERROR("CStateOp not implemented.\n");
 852 }
 853
 854 void CWStateOp(prvm_prog_t *prog, float vara, float varb, mfunction_t *currentFunc)
 855 {
 856         // This function should not be called...
 857         PRVM_ERROR("CWStateOp not implemented.\n");
 858 }
 859
 860 void ThinkTimeOp(prvm_prog_t *prog, prvm_edict_t *ent, float varb)
 861 {
 862         ent->fields.server->nextthink = prog->globals.server->time + varb;
 863 }
 864
 865 #define OPA ((prvm_eval_t *)&prog->globals.generic[(unsigned short) st->a])
 866 #define OPB ((prvm_eval_t *)&prog->globals.generic[(unsigned short) st->b])
 867 #define OPC ((prvm_eval_t *)&prog->globals.generic[(unsigned short) st->c])
 868 extern cvar_t prvm_traceqc;
 869 extern cvar_t prvm_statementprofiling;
 870 extern sizebuf_t vm_tempstringsbuf;
 871 extern qboolean prvm_runawaycheck;
 872
 873 #ifdef PROFILING
 874 /*
 875 ====================
 876 MVM_ExecuteProgram
 877 ====================
 878 */
 879 void MVM_ExecuteProgram (func_t fnum, const char *errormessage)
 880 {
 881         dstatement_t    *st, *startst;
 882         mfunction_t     *f, *newf;
 883         prvm_edict_t    *ed;
 884         prvm_eval_t     *ptr;
 885         int             jumpcount, cachedpr_trace, exitdepth;
 886         int             restorevm_tempstringsbuf_cursize;
 887         double  calltime;
 888
 889         calltime = Sys_DoubleTime();
 890
 891         if (!fnum || fnum >= (unsigned int)prog->progs->numfunctions)
 892         {
 893                 if (prog->globaloffsets.self >= 0 && PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict)
 894                         PRVM_ED_Print(PRVM_PROG_TO_EDICT(PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict), NULL);
 895                 PRVM_ERROR ("MVM_ExecuteProgram: %s", errormessage);
 896         }
 897
 898         f = &prog->functions[fnum];
 899
 900         // after executing this function, delete all tempstrings it created
 901         restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 902
 903         prog->trace = prvm_traceqc.integer;
 904
 905         // we know we're done when pr_depth drops to this
 906         exitdepth = prog->depth;
 907
 908 // make a stack frame
 909         st = &prog->statements[PRVM_EnterFunction (f)];
 910         // save the starting statement pointer for profiling
 911         // (when the function exits or jumps, the (st - startst) integer value is
 912         // added to the function's profile counter)
 913         startst = st;
 914         // instead of counting instructions, we count jumps
 915         jumpcount = 0;
 916         // add one to the callcount of this function because otherwise engine-called functions aren't counted
 917         prog->xfunction->callcount++;
 918
 919 chooseexecprogram:
 920         cachedpr_trace = prog->trace;
 921         if (prvm_statementprofiling.integer || prog->trace)
 922         {
 923 #define PRVMSLOWINTERPRETER 1
 924 #include "prvm_execprogram.h"
 925 #undef PRVMSLOWINTERPRETER
 926         }
 927         else
 928         {
 929 #include "prvm_execprogram.h"
 930         }
 931
 932 cleanup:
 933         if (developer_insane.integer && vm_tempstringsbuf.cursize > restorevm_tempstringsbuf_cursize)
 934                 Con_DPrintf("MVM_ExecuteProgram: %s used %i bytes of tempstrings\n", PRVM_GetString(prog->functions[fnum].s_name), vm_tempstringsbuf.cursize - restorevm_tempstringsbuf_cursize);
 935         // delete tempstrings created by this function
 936         vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 937
 938         f->totaltime += (Sys_DoubleTime() - calltime);
 939
 940         SV_FlushBroadcastMessages();
 941 }
 942
 943 /*
 944 ====================
 945 CLVM_ExecuteProgram
 946 ====================
 947 */
 948 void CLVM_ExecuteProgram (func_t fnum, const char *errormessage)
 949 {
 950         dstatement_t    *st, *startst;
 951         mfunction_t     *f, *newf;
 952         prvm_edict_t    *ed;
 953         prvm_eval_t     *ptr;
 954         int             jumpcount, cachedpr_trace, exitdepth;
 955         int             restorevm_tempstringsbuf_cursize;
 956         double  calltime;
 957
 958         calltime = Sys_DoubleTime();
 959
 960         if (!fnum || fnum >= (unsigned int)prog->progs->numfunctions)
 961         {
 962                 if (prog->globaloffsets.self >= 0 && PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict)
 963                         PRVM_ED_Print(PRVM_PROG_TO_EDICT(PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict), NULL);
 964                 PRVM_ERROR ("CLVM_ExecuteProgram: %s", errormessage);
 965         }
 966
 967         f = &prog->functions[fnum];
 968
 969         // after executing this function, delete all tempstrings it created
 970         restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 971
 972         prog->trace = prvm_traceqc.integer;
 973
 974         // we know we're done when pr_depth drops to this
 975         exitdepth = prog->depth;
 976
 977 // make a stack frame
 978         st = &prog->statements[PRVM_EnterFunction (f)];
 979         // save the starting statement pointer for profiling
 980         // (when the function exits or jumps, the (st - startst) integer value is
 981         // added to the function's profile counter)
 982         startst = st;
 983         // instead of counting instructions, we count jumps
 984         jumpcount = 0;
 985         // add one to the callcount of this function because otherwise engine-called functions aren't counted
 986         prog->xfunction->callcount++;
 987
 988 chooseexecprogram:
 989         cachedpr_trace = prog->trace;
 990         if (prvm_statementprofiling.integer || prog->trace)
 991         {
 992 #define PRVMSLOWINTERPRETER 1
 993 #include "prvm_execprogram.h"
 994 #undef PRVMSLOWINTERPRETER
 995         }
 996         else
 997         {
 998 #include "prvm_execprogram.h"
 999         }
1000
1001 cleanup:
1002         if (developer_insane.integer && vm_tempstringsbuf.cursize > restorevm_tempstringsbuf_cursize)
1003                 Con_DPrintf("CLVM_ExecuteProgram: %s used %i bytes of tempstrings\n", PRVM_GetString(prog->functions[fnum].s_name), vm_tempstringsbuf.cursize - restorevm_tempstringsbuf_cursize);
1004         // delete tempstrings created by this function
1005         vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
1006
1007         f->totaltime += (Sys_DoubleTime() - calltime);
1008
1009         SV_FlushBroadcastMessages();
1010 }
1011 #endif
1012
1013 /*
1014 ====================
1015 SVVM_ExecuteProgram
1016 ====================
1017 */
1018 void SVVM_ExecuteProgram (func_t fnum, const char *errormessage)
1019 {
1020         dstatement_t    *st, *startst;
1021         mfunction_t     *f, *newf;
1022         prvm_edict_t    *ed;
1023         prvm_eval_t     *ptr;
1024         int             jumpcount, cachedpr_trace, exitdepth;
1025         int             restorevm_tempstringsbuf_cursize;
1026         double  calltime;
1027
1028         calltime = Sys_DoubleTime();
1029
1030         if (!fnum || fnum >= (unsigned int)prog->progs->numfunctions)
1031         {
1032                 if (prog->globaloffsets.self >= 0 && PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict)
1033                         PRVM_ED_Print(PRVM_PROG_TO_EDICT(PRVM_GLOBALFIELDVALUE(prog->globaloffsets.self)->edict), NULL);
1034                 PRVM_ERROR ("SVVM_ExecuteProgram: %s", errormessage);
1035         }
1036
1037         f = &prog->functions[fnum];
1038
1039         // after executing this function, delete all tempstrings it created
1040         restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
1041
1042         prog->trace = prvm_traceqc.integer;
1043
1044         // we know we're done when pr_depth drops to this
1045         exitdepth = prog->depth;
1046
1047 // make a stack frame
1048         st = &prog->statements[PRVM_EnterFunction (f)];
1049         // save the starting statement pointer for profiling
1050         // (when the function exits or jumps, the (st - startst) integer value is
1051         // added to the function's profile counter)
1052         startst = st;
1053         // instead of counting instructions, we count jumps
1054         jumpcount = 0;
1055         // add one to the callcount of this function because otherwise engine-called functions aren't counted
1056         prog->xfunction->callcount++;
1057
1058 chooseexecprogram:
1059         cachedpr_trace = prog->trace;
1060         if (prvm_statementprofiling.integer || prog->trace)
1061         {
1062 #define PRVMSLOWINTERPRETER 1
1063 #include "prvm_execprogram.h"
1064 #undef PRVMSLOWINTERPRETER
1065         }
1066         else
1067         {
1068 #include "prvm_execprogram.h"
1069         }
1070
1071 cleanup:
1072         if (developer_insane.integer && vm_tempstringsbuf.cursize > restorevm_tempstringsbuf_cursize)
1073                 Con_DPrintf("SVVM_ExecuteProgram: %s used %i bytes of tempstrings\n", PRVM_GetString(prog->functions[fnum].s_name), vm_tempstringsbuf.cursize - restorevm_tempstringsbuf_cursize);
1074         // delete tempstrings created by this function
1075         vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
1076
1077         f->totaltime += (Sys_DoubleTime() - calltime);
1078
1079         SV_FlushBroadcastMessages();
1080 }