forked from KolibriOS/kolibrios
669 lines
12 KiB
C
669 lines
12 KiB
C
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/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "quakedef.h"
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/*
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*/
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typedef struct
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{
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int s;
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dfunction_t *f;
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} prstack_t;
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#define MAX_STACK_DEPTH 32
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prstack_t pr_stack[MAX_STACK_DEPTH];
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int pr_depth;
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#define LOCALSTACK_SIZE 2048
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int localstack[LOCALSTACK_SIZE];
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int localstack_used;
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qboolean pr_trace;
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dfunction_t *pr_xfunction;
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int pr_xstatement;
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int pr_argc;
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char *pr_opnames[] =
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{
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"DONE",
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"MUL_F",
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"MUL_V",
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"MUL_FV",
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"MUL_VF",
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"DIV",
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"ADD_F",
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"ADD_V",
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"SUB_F",
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"SUB_V",
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"EQ_F",
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"EQ_V",
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"EQ_S",
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"EQ_E",
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"EQ_FNC",
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"NE_F",
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"NE_V",
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"NE_S",
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"NE_E",
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"NE_FNC",
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"LE",
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"GE",
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"LT",
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"GT",
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"INDIRECT",
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"INDIRECT",
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"INDIRECT",
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"INDIRECT",
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"INDIRECT",
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"INDIRECT",
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"ADDRESS",
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"STORE_F",
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"STORE_V",
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"STORE_S",
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"STORE_ENT",
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"STORE_FLD",
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"STORE_FNC",
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"STOREP_F",
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"STOREP_V",
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"STOREP_S",
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"STOREP_ENT",
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"STOREP_FLD",
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"STOREP_FNC",
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"RETURN",
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"NOT_F",
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"NOT_V",
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"NOT_S",
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"NOT_ENT",
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"NOT_FNC",
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"IF",
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"IFNOT",
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"CALL0",
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"CALL1",
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"CALL2",
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"CALL3",
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"CALL4",
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"CALL5",
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"CALL6",
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"CALL7",
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"CALL8",
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"STATE",
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"GOTO",
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"AND",
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"OR",
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"BITAND",
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"BITOR"
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};
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char *PR_GlobalString (int ofs);
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char *PR_GlobalStringNoContents (int ofs);
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//=============================================================================
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/*
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=================
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PR_PrintStatement
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=================
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*/
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void PR_PrintStatement (dstatement_t *s)
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{
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int i;
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if ( (unsigned)s->op < sizeof(pr_opnames)/sizeof(pr_opnames[0]))
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{
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Con_Printf ("%s ", pr_opnames[s->op]);
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i = strlen(pr_opnames[s->op]);
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for ( ; i<10 ; i++)
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Con_Printf (" ");
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}
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if (s->op == OP_IF || s->op == OP_IFNOT)
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Con_Printf ("%sbranch %i",PR_GlobalString(s->a),s->b);
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else if (s->op == OP_GOTO)
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{
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Con_Printf ("branch %i",s->a);
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}
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else if ( (unsigned)(s->op - OP_STORE_F) < 6)
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{
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Con_Printf ("%s",PR_GlobalString(s->a));
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Con_Printf ("%s", PR_GlobalStringNoContents(s->b));
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}
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else
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{
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if (s->a)
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Con_Printf ("%s",PR_GlobalString(s->a));
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if (s->b)
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Con_Printf ("%s",PR_GlobalString(s->b));
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if (s->c)
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Con_Printf ("%s", PR_GlobalStringNoContents(s->c));
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}
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Con_Printf ("\n");
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}
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/*
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============
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PR_StackTrace
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============
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*/
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void PR_StackTrace (void)
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{
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dfunction_t *f;
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int i;
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if (pr_depth == 0)
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{
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Con_Printf ("<NO STACK>\n");
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return;
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}
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pr_stack[pr_depth].f = pr_xfunction;
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for (i=pr_depth ; i>=0 ; i--)
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{
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f = pr_stack[i].f;
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if (!f)
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{
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Con_Printf ("<NO FUNCTION>\n");
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}
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else
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Con_Printf ("%12s : %s\n", pr_strings + f->s_file, pr_strings + f->s_name);
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}
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}
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/*
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============
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PR_Profile_f
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============
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*/
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void PR_Profile_f (void)
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{
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dfunction_t *f, *best;
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int max;
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int num;
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int i;
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num = 0;
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do
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{
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max = 0;
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best = NULL;
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for (i=0 ; i<progs->numfunctions ; i++)
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{
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f = &pr_functions[i];
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if (f->profile > max)
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{
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max = f->profile;
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best = f;
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}
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}
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if (best)
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{
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if (num < 10)
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Con_Printf ("%7i %s\n", best->profile, pr_strings+best->s_name);
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num++;
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best->profile = 0;
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}
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} while (best);
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}
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/*
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============
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PR_RunError
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Aborts the currently executing function
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============
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*/
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void PR_RunError (char *error, ...)
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{
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va_list argptr;
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char string[1024];
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va_start (argptr,error);
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vsprintf (string,error,argptr);
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va_end (argptr);
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PR_PrintStatement (pr_statements + pr_xstatement);
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PR_StackTrace ();
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Con_Printf ("%s\n", string);
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pr_depth = 0; // dump the stack so host_error can shutdown functions
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Host_Error ("Program error");
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}
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/*
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============================================================================
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PR_ExecuteProgram
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The interpretation main loop
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============================================================================
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*/
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/*
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====================
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PR_EnterFunction
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Returns the new program statement counter
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====================
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*/
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int PR_EnterFunction (dfunction_t *f)
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{
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int i, j, c, o;
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pr_stack[pr_depth].s = pr_xstatement;
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pr_stack[pr_depth].f = pr_xfunction;
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pr_depth++;
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if (pr_depth >= MAX_STACK_DEPTH)
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PR_RunError ("stack overflow");
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// save off any locals that the new function steps on
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c = f->locals;
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if (localstack_used + c > LOCALSTACK_SIZE)
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PR_RunError ("PR_ExecuteProgram: locals stack overflow\n");
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for (i=0 ; i < c ; i++)
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localstack[localstack_used+i] = ((int *)pr_globals)[f->parm_start + i];
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localstack_used += c;
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// copy parameters
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o = f->parm_start;
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for (i=0 ; i<f->numparms ; i++)
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{
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for (j=0 ; j<f->parm_size[i] ; j++)
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{
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((int *)pr_globals)[o] = ((int *)pr_globals)[OFS_PARM0+i*3+j];
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o++;
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}
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}
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pr_xfunction = f;
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return f->first_statement - 1; // offset the s++
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}
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/*
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====================
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PR_LeaveFunction
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====================
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*/
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int PR_LeaveFunction (void)
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{
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int i, c;
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if (pr_depth <= 0)
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Sys_Error ("prog stack underflow");
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// restore locals from the stack
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c = pr_xfunction->locals;
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localstack_used -= c;
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if (localstack_used < 0)
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PR_RunError ("PR_ExecuteProgram: locals stack underflow\n");
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for (i=0 ; i < c ; i++)
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((int *)pr_globals)[pr_xfunction->parm_start + i] = localstack[localstack_used+i];
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// up stack
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pr_depth--;
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pr_xfunction = pr_stack[pr_depth].f;
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return pr_stack[pr_depth].s;
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}
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/*
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====================
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PR_ExecuteProgram
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====================
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*/
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void PR_ExecuteProgram (func_t fnum)
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{
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eval_t *a, *b, *c;
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int s;
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dstatement_t *st;
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dfunction_t *f, *newf;
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int runaway;
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int i;
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edict_t *ed;
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int exitdepth;
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eval_t *ptr;
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if (!fnum || fnum >= progs->numfunctions)
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{
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if (pr_global_struct->self)
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ED_Print (PROG_TO_EDICT(pr_global_struct->self));
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Host_Error ("PR_ExecuteProgram: NULL function");
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}
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f = &pr_functions[fnum];
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runaway = 100000;
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pr_trace = false;
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// make a stack frame
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exitdepth = pr_depth;
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s = PR_EnterFunction (f);
|
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while (1)
|
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{
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s++; // next statement
|
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st = &pr_statements[s];
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a = (eval_t *)&pr_globals[st->a];
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b = (eval_t *)&pr_globals[st->b];
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c = (eval_t *)&pr_globals[st->c];
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if (!--runaway)
|
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PR_RunError ("runaway loop error");
|
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|
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pr_xfunction->profile++;
|
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pr_xstatement = s;
|
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if (pr_trace)
|
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PR_PrintStatement (st);
|
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|
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switch (st->op)
|
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{
|
||
|
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case OP_ADD_F:
|
||
|
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c->_float = a->_float + b->_float;
|
||
|
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break;
|
||
|
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case OP_ADD_V:
|
||
|
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c->vector[0] = a->vector[0] + b->vector[0];
|
||
|
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c->vector[1] = a->vector[1] + b->vector[1];
|
||
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c->vector[2] = a->vector[2] + b->vector[2];
|
||
|
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break;
|
||
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|
||
|
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case OP_SUB_F:
|
||
|
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c->_float = a->_float - b->_float;
|
||
|
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break;
|
||
|
|
case OP_SUB_V:
|
||
|
|
c->vector[0] = a->vector[0] - b->vector[0];
|
||
|
|
c->vector[1] = a->vector[1] - b->vector[1];
|
||
|
|
c->vector[2] = a->vector[2] - b->vector[2];
|
||
|
|
break;
|
||
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|
||
|
|
case OP_MUL_F:
|
||
|
|
c->_float = a->_float * b->_float;
|
||
|
|
break;
|
||
|
|
case OP_MUL_V:
|
||
|
|
c->_float = a->vector[0]*b->vector[0]
|
||
|
|
+ a->vector[1]*b->vector[1]
|
||
|
|
+ a->vector[2]*b->vector[2];
|
||
|
|
break;
|
||
|
|
case OP_MUL_FV:
|
||
|
|
c->vector[0] = a->_float * b->vector[0];
|
||
|
|
c->vector[1] = a->_float * b->vector[1];
|
||
|
|
c->vector[2] = a->_float * b->vector[2];
|
||
|
|
break;
|
||
|
|
case OP_MUL_VF:
|
||
|
|
c->vector[0] = b->_float * a->vector[0];
|
||
|
|
c->vector[1] = b->_float * a->vector[1];
|
||
|
|
c->vector[2] = b->_float * a->vector[2];
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_DIV_F:
|
||
|
|
c->_float = a->_float / b->_float;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_BITAND:
|
||
|
|
c->_float = (int)a->_float & (int)b->_float;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_BITOR:
|
||
|
|
c->_float = (int)a->_float | (int)b->_float;
|
||
|
|
break;
|
||
|
|
|
||
|
|
|
||
|
|
case OP_GE:
|
||
|
|
c->_float = a->_float >= b->_float;
|
||
|
|
break;
|
||
|
|
case OP_LE:
|
||
|
|
c->_float = a->_float <= b->_float;
|
||
|
|
break;
|
||
|
|
case OP_GT:
|
||
|
|
c->_float = a->_float > b->_float;
|
||
|
|
break;
|
||
|
|
case OP_LT:
|
||
|
|
c->_float = a->_float < b->_float;
|
||
|
|
break;
|
||
|
|
case OP_AND:
|
||
|
|
c->_float = a->_float && b->_float;
|
||
|
|
break;
|
||
|
|
case OP_OR:
|
||
|
|
c->_float = a->_float || b->_float;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_NOT_F:
|
||
|
|
c->_float = !a->_float;
|
||
|
|
break;
|
||
|
|
case OP_NOT_V:
|
||
|
|
c->_float = !a->vector[0] && !a->vector[1] && !a->vector[2];
|
||
|
|
break;
|
||
|
|
case OP_NOT_S:
|
||
|
|
c->_float = !a->string || !pr_strings[a->string];
|
||
|
|
break;
|
||
|
|
case OP_NOT_FNC:
|
||
|
|
c->_float = !a->function;
|
||
|
|
break;
|
||
|
|
case OP_NOT_ENT:
|
||
|
|
c->_float = (PROG_TO_EDICT(a->edict) == sv.edicts);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_EQ_F:
|
||
|
|
c->_float = a->_float == b->_float;
|
||
|
|
break;
|
||
|
|
case OP_EQ_V:
|
||
|
|
c->_float = (a->vector[0] == b->vector[0]) &&
|
||
|
|
(a->vector[1] == b->vector[1]) &&
|
||
|
|
(a->vector[2] == b->vector[2]);
|
||
|
|
break;
|
||
|
|
case OP_EQ_S:
|
||
|
|
c->_float = !strcmp(pr_strings+a->string,pr_strings+b->string);
|
||
|
|
break;
|
||
|
|
case OP_EQ_E:
|
||
|
|
c->_float = a->_int == b->_int;
|
||
|
|
break;
|
||
|
|
case OP_EQ_FNC:
|
||
|
|
c->_float = a->function == b->function;
|
||
|
|
break;
|
||
|
|
|
||
|
|
|
||
|
|
case OP_NE_F:
|
||
|
|
c->_float = a->_float != b->_float;
|
||
|
|
break;
|
||
|
|
case OP_NE_V:
|
||
|
|
c->_float = (a->vector[0] != b->vector[0]) ||
|
||
|
|
(a->vector[1] != b->vector[1]) ||
|
||
|
|
(a->vector[2] != b->vector[2]);
|
||
|
|
break;
|
||
|
|
case OP_NE_S:
|
||
|
|
c->_float = strcmp(pr_strings+a->string,pr_strings+b->string);
|
||
|
|
break;
|
||
|
|
case OP_NE_E:
|
||
|
|
c->_float = a->_int != b->_int;
|
||
|
|
break;
|
||
|
|
case OP_NE_FNC:
|
||
|
|
c->_float = a->function != b->function;
|
||
|
|
break;
|
||
|
|
|
||
|
|
//==================
|
||
|
|
case OP_STORE_F:
|
||
|
|
case OP_STORE_ENT:
|
||
|
|
case OP_STORE_FLD: // integers
|
||
|
|
case OP_STORE_S:
|
||
|
|
case OP_STORE_FNC: // pointers
|
||
|
|
b->_int = a->_int;
|
||
|
|
break;
|
||
|
|
case OP_STORE_V:
|
||
|
|
b->vector[0] = a->vector[0];
|
||
|
|
b->vector[1] = a->vector[1];
|
||
|
|
b->vector[2] = a->vector[2];
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_STOREP_F:
|
||
|
|
case OP_STOREP_ENT:
|
||
|
|
case OP_STOREP_FLD: // integers
|
||
|
|
case OP_STOREP_S:
|
||
|
|
case OP_STOREP_FNC: // pointers
|
||
|
|
ptr = (eval_t *)((byte *)sv.edicts + b->_int);
|
||
|
|
ptr->_int = a->_int;
|
||
|
|
break;
|
||
|
|
case OP_STOREP_V:
|
||
|
|
ptr = (eval_t *)((byte *)sv.edicts + b->_int);
|
||
|
|
ptr->vector[0] = a->vector[0];
|
||
|
|
ptr->vector[1] = a->vector[1];
|
||
|
|
ptr->vector[2] = a->vector[2];
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_ADDRESS:
|
||
|
|
ed = PROG_TO_EDICT(a->edict);
|
||
|
|
#ifdef PARANOID
|
||
|
|
NUM_FOR_EDICT(ed); // make sure it's in range
|
||
|
|
#endif
|
||
|
|
if (ed == (edict_t *)sv.edicts && sv.state == ss_active)
|
||
|
|
PR_RunError ("assignment to world entity");
|
||
|
|
c->_int = (byte *)((int *)&ed->v + b->_int) - (byte *)sv.edicts;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_LOAD_F:
|
||
|
|
case OP_LOAD_FLD:
|
||
|
|
case OP_LOAD_ENT:
|
||
|
|
case OP_LOAD_S:
|
||
|
|
case OP_LOAD_FNC:
|
||
|
|
ed = PROG_TO_EDICT(a->edict);
|
||
|
|
#ifdef PARANOID
|
||
|
|
NUM_FOR_EDICT(ed); // make sure it's in range
|
||
|
|
#endif
|
||
|
|
a = (eval_t *)((int *)&ed->v + b->_int);
|
||
|
|
c->_int = a->_int;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_LOAD_V:
|
||
|
|
ed = PROG_TO_EDICT(a->edict);
|
||
|
|
#ifdef PARANOID
|
||
|
|
NUM_FOR_EDICT(ed); // make sure it's in range
|
||
|
|
#endif
|
||
|
|
a = (eval_t *)((int *)&ed->v + b->_int);
|
||
|
|
c->vector[0] = a->vector[0];
|
||
|
|
c->vector[1] = a->vector[1];
|
||
|
|
c->vector[2] = a->vector[2];
|
||
|
|
break;
|
||
|
|
|
||
|
|
//==================
|
||
|
|
|
||
|
|
case OP_IFNOT:
|
||
|
|
if (!a->_int)
|
||
|
|
s += st->b - 1; // offset the s++
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_IF:
|
||
|
|
if (a->_int)
|
||
|
|
s += st->b - 1; // offset the s++
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_GOTO:
|
||
|
|
s += st->a - 1; // offset the s++
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_CALL0:
|
||
|
|
case OP_CALL1:
|
||
|
|
case OP_CALL2:
|
||
|
|
case OP_CALL3:
|
||
|
|
case OP_CALL4:
|
||
|
|
case OP_CALL5:
|
||
|
|
case OP_CALL6:
|
||
|
|
case OP_CALL7:
|
||
|
|
case OP_CALL8:
|
||
|
|
pr_argc = st->op - OP_CALL0;
|
||
|
|
if (!a->function)
|
||
|
|
PR_RunError ("NULL function");
|
||
|
|
|
||
|
|
newf = &pr_functions[a->function];
|
||
|
|
|
||
|
|
if (newf->first_statement < 0)
|
||
|
|
{ // negative statements are built in functions
|
||
|
|
i = -newf->first_statement;
|
||
|
|
if (i >= pr_numbuiltins)
|
||
|
|
PR_RunError ("Bad builtin call number");
|
||
|
|
pr_builtins[i] ();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
s = PR_EnterFunction (newf);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_DONE:
|
||
|
|
case OP_RETURN:
|
||
|
|
pr_globals[OFS_RETURN] = pr_globals[st->a];
|
||
|
|
pr_globals[OFS_RETURN+1] = pr_globals[st->a+1];
|
||
|
|
pr_globals[OFS_RETURN+2] = pr_globals[st->a+2];
|
||
|
|
|
||
|
|
s = PR_LeaveFunction ();
|
||
|
|
if (pr_depth == exitdepth)
|
||
|
|
return; // all done
|
||
|
|
break;
|
||
|
|
|
||
|
|
case OP_STATE:
|
||
|
|
ed = PROG_TO_EDICT(pr_global_struct->self);
|
||
|
|
#ifdef FPS_20
|
||
|
|
ed->v.nextthink = pr_global_struct->time + 0.05;
|
||
|
|
#else
|
||
|
|
ed->v.nextthink = pr_global_struct->time + 0.1;
|
||
|
|
#endif
|
||
|
|
if (a->_float != ed->v.frame)
|
||
|
|
{
|
||
|
|
ed->v.frame = a->_float;
|
||
|
|
}
|
||
|
|
ed->v.think = b->function;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
PR_RunError ("Bad opcode %i", st->op);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|