2 Copyright (C) 1996-1997 Id Software, Inc.
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.
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.
13 See the GNU General Public License for more details.
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.
30 #define MAX_STACK_DEPTH 32
31 prstack_t pr_stack[MAX_STACK_DEPTH];
34 #define LOCALSTACK_SIZE 2048
35 int localstack[LOCALSTACK_SIZE];
40 dfunction_t *pr_xfunction;
135 char *PR_GlobalString (int ofs);
136 char *PR_GlobalStringNoContents (int ofs);
139 //=============================================================================
146 void PR_PrintStatement (dstatement_t *s)
150 if ( (unsigned)s->op < sizeof(pr_opnames)/sizeof(pr_opnames[0]))
152 Con_Printf ("%s ", pr_opnames[s->op]);
153 i = strlen(pr_opnames[s->op]);
158 if (s->op == OP_IF || s->op == OP_IFNOT)
159 Con_Printf ("%sbranch %i",PR_GlobalString((unsigned short) s->a),s->b);
160 else if (s->op == OP_GOTO)
162 Con_Printf ("branch %i",s->a);
164 else if ( (unsigned)(s->op - OP_STORE_F) < 6)
166 Con_Printf ("%s",PR_GlobalString((unsigned short) s->a));
167 Con_Printf ("%s", PR_GlobalStringNoContents((unsigned short) s->b));
172 Con_Printf ("%s",PR_GlobalString((unsigned short) s->a));
174 Con_Printf ("%s",PR_GlobalString((unsigned short) s->b));
176 Con_Printf ("%s", PR_GlobalStringNoContents((unsigned short) s->c));
186 void PR_StackTrace (void)
191 pr_stack[pr_depth].s = pr_xstatement;
192 pr_stack[pr_depth].f = pr_xfunction;
193 for (i = pr_depth;i > 0;i--)
198 Con_Printf ("<NULL FUNCTION>\n");
200 Con_Printf ("%12s : %s : statement %i\n", pr_strings + f->s_file, pr_strings + f->s_name, pr_stack[i].s - f->first_statement);
211 void PR_Profile_f (void)
213 dfunction_t *f, *best;
223 for (i=0 ; i<progs->numfunctions ; i++)
225 f = &pr_functions[i];
226 if (f->profile > max)
235 Con_Printf ("%7i %s\n", best->profile, pr_strings+best->s_name);
248 // kill the stack just to be sure
254 Con_Printf("QuakeC crash report:\n");
257 for (i = -4;i <= 0;i++)
258 if (pr_xstatement + i >= pr_xfunction->first_statement)
259 PR_PrintStatement (pr_statements + pr_xstatement + i);
262 Con_Printf("null function executing??\n");
265 // dump the stack so host_error can shutdown functions
271 ============================================================================
274 The interpretation main loop
275 ============================================================================
282 Returns the new program statement counter
285 int PR_EnterFunction (dfunction_t *f)
290 Host_Error ("PR_EnterFunction: NULL function\n");
292 pr_stack[pr_depth].s = pr_xstatement;
293 pr_stack[pr_depth].f = pr_xfunction;
295 if (pr_depth >= MAX_STACK_DEPTH)
296 Host_Error ("stack overflow");
298 // save off any locals that the new function steps on
300 if (localstack_used + c > LOCALSTACK_SIZE)
301 Host_Error ("PR_ExecuteProgram: locals stack overflow\n");
303 for (i=0 ; i < c ; i++)
304 localstack[localstack_used+i] = ((int *)pr_globals)[f->parm_start + i];
305 localstack_used += c;
309 for (i=0 ; i<f->numparms ; i++)
311 for (j=0 ; j<f->parm_size[i] ; j++)
313 ((int *)pr_globals)[o] = ((int *)pr_globals)[OFS_PARM0+i*3+j];
319 return f->first_statement - 1; // offset the s++
327 int PR_LeaveFunction (void)
332 Host_Error ("prog stack underflow");
335 Host_Error ("PR_LeaveFunction: NULL function\n");
336 // restore locals from the stack
337 c = pr_xfunction->locals;
338 localstack_used -= c;
339 if (localstack_used < 0)
340 Host_Error ("PR_ExecuteProgram: locals stack underflow\n");
342 for (i=0 ; i < c ; i++)
343 ((int *)pr_globals)[pr_xfunction->parm_start + i] = localstack[localstack_used+i];
347 pr_xfunction = pr_stack[pr_depth].f;
348 return pr_stack[pr_depth].s;
351 void PR_Execute_ProgsLoaded(void)
363 // LordHavoc: optimized
364 #define OPA ((eval_t *)&pr_globals[(unsigned short) st->a])
365 #define OPB ((eval_t *)&pr_globals[(unsigned short) st->b])
366 #define OPC ((eval_t *)&pr_globals[(unsigned short) st->c])
367 extern cvar_t pr_boundscheck;
368 void PR_ExecuteProgram (func_t fnum, char *errormessage)
371 dfunction_t *f, *newf;
374 int profile, startprofile, cachedpr_trace, exitdepth;
376 if (!fnum || fnum >= progs->numfunctions)
378 if (pr_global_struct->self)
379 ED_Print (PROG_TO_EDICT(pr_global_struct->self));
380 Host_Error ("PR_ExecuteProgram: %s", errormessage);
383 f = &pr_functions[fnum];
387 // we know we're done when pr_depth drops to this
388 exitdepth = pr_depth;
390 // make a stack frame
391 st = &pr_statements[PR_EnterFunction (f)];
392 startprofile = profile = 0;
395 cachedpr_trace = pr_trace;
396 if (pr_boundscheck.integer)
398 #define PRBOUNDSCHECK 1
402 #include "pr_execprogram.h"
407 #include "pr_execprogram.h"
416 #include "pr_execprogram.h"
421 #include "pr_execprogram.h"