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newtree/source/pr_exec.c
Bill Currie 2debf6f669 now only svs is reverenced where it shouldn't be, and that's to set info 
strings (skybox and *progs). skybox is easy to take care of (aditional parse
functions), but I haven't yet decided what to do with *progs. Also, progs code
needs a bit of a cleanup, but that will come later.
2001-01-02 03:22:46 +00:00

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/*
pr_exec.c
(description)
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
$Id$
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdarg.h>
#include "console.h"
#include "cvar.h"
#include "progs.h"
#include "server.h"
#include "sys.h"
char *pr_opnames[] = {
"DONE",
"MUL_F",
"MUL_V",
"MUL_FV",
"MUL_VF",
"DIV",
"ADD_F",
"ADD_V",
"SUB_F",
"SUB_V",
"EQ_F",
"EQ_V",
"EQ_S",
"EQ_E",
"EQ_FNC",
"NE_F",
"NE_V",
"NE_S",
"NE_E",
"NE_FNC",
"LE",
"GE",
"LT",
"GT",
"INDIRECT",
"INDIRECT",
"INDIRECT",
"INDIRECT",
"INDIRECT",
"INDIRECT",
"ADDRESS",
"STORE_F",
"STORE_V",
"STORE_S",
"STORE_ENT",
"STORE_FLD",
"STORE_FNC",
"STOREP_F",
"STOREP_V",
"STOREP_S",
"STOREP_ENT",
"STOREP_FLD",
"STOREP_FNC",
"RETURN",
"NOT_F",
"NOT_V",
"NOT_S",
"NOT_ENT",
"NOT_FNC",
"IF",
"IFNOT",
"CALL0",
"CALL1",
"CALL2",
"CALL3",
"CALL4",
"CALL5",
"CALL6",
"CALL7",
"CALL8",
"STATE",
"GOTO",
"AND",
"OR",
"BITAND",
"BITOR"
};
char *PR_GlobalString (int ofs);
char *PR_GlobalStringNoContents (int ofs);
//=============================================================================
/*
PR_PrintStatement
*/
void
PR_PrintStatement (progs_t *pr, dstatement_t *s)
{
int i;
if ((unsigned int) s->op < sizeof (pr_opnames) / sizeof (pr_opnames[0])) {
Con_Printf ("%s ", pr_opnames[s->op]);
i = strlen (pr_opnames[s->op]);
for (; i < 10; i++)
Con_Printf (" ");
}
if (s->op == OP_IF || s->op == OP_IFNOT)
Con_Printf ("%sbranch %i", PR_GlobalString ((unsigned short) s->a),
s->b);
else if (s->op == OP_GOTO) {
Con_Printf ("branch %i", s->a);
} else if ((unsigned int) (s->op - OP_STORE_F) < 6) {
Con_Printf ("%s", PR_GlobalString ((unsigned short) s->a));
Con_Printf ("%s", PR_GlobalStringNoContents ((unsigned short) s->b));
} else {
if (s->a)
Con_Printf ("%s", PR_GlobalString ((unsigned short) s->a));
if (s->b)
Con_Printf ("%s", PR_GlobalString ((unsigned short) s->b));
if (s->c)
Con_Printf ("%s",
PR_GlobalStringNoContents ((unsigned short) s->c));
}
Con_Printf ("\n");
}
/*
PR_StackTrace
*/
void
PR_StackTrace (progs_t *pr)
{
dfunction_t *f;
int i;
if (pr->pr_depth == 0) {
Con_Printf ("<NO STACK>\n");
return;
}
pr->pr_stack[pr->pr_depth].f = pr->pr_xfunction;
for (i = pr->pr_depth; i >= 0; i--) {
f = pr->pr_stack[i].f;
if (!f) {
Con_Printf ("<NO FUNCTION>\n");
} else
Con_Printf ("%12s : %s\n", PR_GetString (pr, f->s_file),
PR_GetString (pr, f->s_name));
}
}
/*
PR_Profile
*/
void
PR_Profile (progs_t *pr)
{
dfunction_t *f, *best;
int max;
int num;
int i;
num = 0;
do {
max = 0;
best = NULL;
for (i = 0; i < pr->progs->numfunctions; i++) {
f = &pr->pr_functions[i];
if (f->profile > max) {
max = f->profile;
best = f;
}
}
if (best) {
if (num < 10)
Con_Printf ("%7i %s\n", best->profile,
PR_GetString (pr, best->s_name));
num++;
best->profile = 0;
}
} while (best);
}
/*
PR_RunError
Aborts the currently executing function
*/
void
PR_RunError (progs_t *pr, char *error, ...)
{
va_list argptr;
char string[1024];
va_start (argptr, error);
vsnprintf (string, sizeof (string), error, argptr);
va_end (argptr);
PR_PrintStatement (pr, pr->pr_statements + pr->pr_xstatement);
PR_StackTrace (pr);
Con_Printf ("%s\n", string);
pr->pr_depth = 0; // dump the stack so SV_Error can
// shutdown functions
SV_Error ("Program error");
}
/*
PR_ExecuteProgram
The interpretation main loop
*/
/*
PR_EnterFunction
Returns the new program statement counter
*/
int
PR_EnterFunction (progs_t *pr, dfunction_t *f)
{
int i, j, c, o;
pr->pr_stack[pr->pr_depth].s = pr->pr_xstatement;
pr->pr_stack[pr->pr_depth].f = pr->pr_xfunction;
pr->pr_depth++;
if (pr->pr_depth >= MAX_STACK_DEPTH)
PR_RunError (pr, "stack overflow");
// save off any locals that the new function steps on
c = f->locals;
if (pr->localstack_used + c > LOCALSTACK_SIZE)
PR_RunError (pr, "PR_ExecuteProgram: locals stack overflow\n");
for (i = 0; i < c; i++)
pr->localstack[pr->localstack_used + i] =
((int *) pr->pr_globals)[f->parm_start + i];
pr->localstack_used += c;
// copy parameters
o = f->parm_start;
for (i = 0; i < f->numparms; i++) {
for (j = 0; j < f->parm_size[i]; j++) {
((int *) pr->pr_globals)[o] = ((int *) pr->pr_globals)[OFS_PARM0 + i * 3 + j];
o++;
}
}
pr->pr_xfunction = f;
return f->first_statement - 1; // offset the s++
}
/*
PR_LeaveFunction
*/
int
PR_LeaveFunction (progs_t *pr)
{
int i, c;
if (pr->pr_depth <= 0)
SV_Error ("prog stack underflow");
// restore locals from the stack
c = pr->pr_xfunction->locals;
pr->localstack_used -= c;
if (pr->localstack_used < 0)
PR_RunError (pr, "PR_ExecuteProgram: locals stack underflow\n");
for (i = 0; i < c; i++)
((int *) pr->pr_globals)[pr->pr_xfunction->parm_start + i] =
pr->localstack[pr->localstack_used + i];
// up stack
pr->pr_depth--;
pr->pr_xfunction = pr->pr_stack[pr->pr_depth].f;
return pr->pr_stack[pr->pr_depth].s;
}
/*
PR_ExecuteProgram
*/
// LordHavoc: optimized
#define OPA ((eval_t *)&pr->pr_globals[(unsigned short) st->a])
#define OPB ((eval_t *)&pr->pr_globals[(unsigned short) st->b])
#define OPC ((eval_t *)&pr->pr_globals[(unsigned short) st->c])
extern cvar_t *pr_boundscheck;
void
PR_ExecuteProgram (progs_t *pr, func_t fnum)
{
dstatement_t *st;
dfunction_t *f, *newf;
edict_t *ed;
int exitdepth;
eval_t *ptr;
int profile, startprofile;
if (!fnum || fnum >= pr->progs->numfunctions) {
if (pr->pr_global_struct->self)
ED_Print (pr, PROG_TO_EDICT (pr, pr->pr_global_struct->self));
SV_Error ("PR_ExecuteProgram: NULL function");
}
f = &pr->pr_functions[fnum];
pr->pr_trace = false;
// make a stack frame
exitdepth = pr->pr_depth;
st = &pr->pr_statements[PR_EnterFunction (pr, f)];
startprofile = profile = 0;
while (1) {
st++;
if (++profile > 1000000) // LordHavoc: increased runaway loop
// limit 10x
{
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError (pr, "runaway loop error");
}
if (pr->pr_trace)
PR_PrintStatement (pr, st);
switch (st->op) {
case OP_ADD_F:
OPC->_float = OPA->_float + OPB->_float;
break;
case OP_ADD_V:
OPC->vector[0] = OPA->vector[0] + OPB->vector[0];
OPC->vector[1] = OPA->vector[1] + OPB->vector[1];
OPC->vector[2] = OPA->vector[2] + OPB->vector[2];
break;
case OP_SUB_F:
OPC->_float = OPA->_float - OPB->_float;
break;
case OP_SUB_V:
OPC->vector[0] = OPA->vector[0] - OPB->vector[0];
OPC->vector[1] = OPA->vector[1] - OPB->vector[1];
OPC->vector[2] = OPA->vector[2] - OPB->vector[2];
break;
case OP_MUL_F:
OPC->_float = OPA->_float * OPB->_float;
break;
case OP_MUL_V:
OPC->_float =
OPA->vector[0] * OPB->vector[0] +
OPA->vector[1] * OPB->vector[1] +
OPA->vector[2] * OPB->vector[2];
break;
case OP_MUL_FV:
OPC->vector[0] = OPA->_float * OPB->vector[0];
OPC->vector[1] = OPA->_float * OPB->vector[1];
OPC->vector[2] = OPA->_float * OPB->vector[2];
break;
case OP_MUL_VF:
OPC->vector[0] = OPB->_float * OPA->vector[0];
OPC->vector[1] = OPB->_float * OPA->vector[1];
OPC->vector[2] = OPB->_float * OPA->vector[2];
break;
case OP_DIV_F:
OPC->_float = OPA->_float / OPB->_float;
break;
case OP_BITAND:
OPC->_float = (int) OPA->_float & (int) OPB->_float;
break;
case OP_BITOR:
OPC->_float = (int) OPA->_float | (int) OPB->_float;
break;
case OP_GE:
OPC->_float = OPA->_float >= OPB->_float;
break;
case OP_LE:
OPC->_float = OPA->_float <= OPB->_float;
break;
case OP_GT:
OPC->_float = OPA->_float > OPB->_float;
break;
case OP_LT:
OPC->_float = OPA->_float < OPB->_float;
break;
case OP_AND:
OPC->_float = OPA->_float && OPB->_float;
break;
case OP_OR:
OPC->_float = OPA->_float || OPB->_float;
break;
case OP_NOT_F:
OPC->_float = !OPA->_float;
break;
case OP_NOT_V:
OPC->_float = !OPA->vector[0] && !OPA->vector[1]
&& !OPA->vector[2];
break;
case OP_NOT_S:
OPC->_float = !OPA->string || !*PR_GetString (pr, OPA->string);
break;
case OP_NOT_FNC:
OPC->_float = !OPA->function;
break;
case OP_NOT_ENT:
OPC->_float = (PROG_TO_EDICT (pr, OPA->edict) == *pr->edicts);
break;
case OP_EQ_F:
OPC->_float = OPA->_float == OPB->_float;
break;
case OP_EQ_V:
OPC->_float = (OPA->vector[0] == OPB->vector[0])
&& (OPA->vector[1] == OPB->vector[1])
&& (OPA->vector[2] == OPB->vector[2]);
break;
case OP_EQ_S:
OPC->_float =
!strcmp (PR_GetString (pr, OPA->string),
PR_GetString (pr, OPB->string));
break;
case OP_EQ_E:
OPC->_float = OPA->_int == OPB->_int;
break;
case OP_EQ_FNC:
OPC->_float = OPA->function == OPB->function;
break;
case OP_NE_F:
OPC->_float = OPA->_float != OPB->_float;
break;
case OP_NE_V:
OPC->_float = (OPA->vector[0] != OPB->vector[0])
|| (OPA->vector[1] != OPB->vector[1])
|| (OPA->vector[2] != OPB->vector[2]);
break;
case OP_NE_S:
OPC->_float =
strcmp (PR_GetString (pr, OPA->string),
PR_GetString (pr, OPB->string));
break;
case OP_NE_E:
OPC->_float = OPA->_int != OPB->_int;
break;
case OP_NE_FNC:
OPC->_float = OPA->function != OPB->function;
break;
// ==================
case OP_STORE_F:
case OP_STORE_ENT:
case OP_STORE_FLD: // integers
case OP_STORE_S:
case OP_STORE_FNC: // pointers
OPB->_int = OPA->_int;
break;
case OP_STORE_V:
OPB->vector[0] = OPA->vector[0];
OPB->vector[1] = OPA->vector[1];
OPB->vector[2] = OPA->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
if (pr_boundscheck->int_val
&& (OPB->_int < 0 || OPB->_int + 4 > pr->pr_edictareasize)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to write to an out of bounds edict\n");
return;
}
if (pr_boundscheck->int_val && (OPB->_int % pr->pr_edict_size <
((byte *) & (*pr->edicts)->v -
(byte *) *pr->edicts))) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to write to an engine edict field\n");
return;
}
ptr = (eval_t *) ((byte *) *pr->edicts + OPB->_int);
ptr->_int = OPA->_int;
break;
case OP_STOREP_V:
if (pr_boundscheck->int_val
&& (OPB->_int < 0 || OPB->_int + 12 > pr->pr_edictareasize)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to write to an out of bounds edict\n");
return;
}
ptr = (eval_t *) ((byte *) *pr->edicts + OPB->_int);
ptr->vector[0] = OPA->vector[0];
ptr->vector[1] = OPA->vector[1];
ptr->vector[2] = OPA->vector[2];
break;
case OP_ADDRESS:
if (pr_boundscheck->int_val
&& (OPA->edict < 0 || OPA->edict >= pr->pr_edictareasize)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to address an out of bounds edict\n");
return;
}
if (pr_boundscheck->int_val
&& (OPA->edict == 0 && pr->null_bad)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError (pr, "assignment to world entity");
return;
}
if (pr_boundscheck->int_val
&& (OPB->_int < 0 || OPB->_int >= pr->progs->entityfields)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to address an invalid field in an edict\n");
return;
}
ed = PROG_TO_EDICT (pr, OPA->edict);
OPC->_int =
(byte *) ((int *) &ed->v + OPB->_int) - (byte *) *pr->edicts;
break;
case OP_LOAD_F:
case OP_LOAD_FLD:
case OP_LOAD_ENT:
case OP_LOAD_S:
case OP_LOAD_FNC:
if (pr_boundscheck->int_val
&& (OPA->edict < 0 || OPA->edict >= pr->pr_edictareasize)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to read an out of bounds edict number\n");
return;
}
if (pr_boundscheck->int_val
&& (OPB->_int < 0 || OPB->_int >= pr->progs->entityfields)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to read an invalid field in an edict\n");
return;
}
ed = PROG_TO_EDICT (pr, OPA->edict);
OPC->_int = ((eval_t *) ((int *) &ed->v + OPB->_int))->_int;
break;
case OP_LOAD_V:
if (pr_boundscheck->int_val
&& (OPA->edict < 0 || OPA->edict >= pr->pr_edictareasize)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to read an out of bounds edict number\n");
return;
}
if (pr_boundscheck->int_val
&& (OPB->_int < 0 || OPB->_int + 2 >= pr->progs->entityfields)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to read an invalid field in an edict\n");
return;
}
ed = PROG_TO_EDICT (pr, OPA->edict);
OPC->vector[0] =
((eval_t *) ((int *) &ed->v + OPB->_int))->vector[0];
OPC->vector[1] =
((eval_t *) ((int *) &ed->v + OPB->_int))->vector[1];
OPC->vector[2] =
((eval_t *) ((int *) &ed->v + OPB->_int))->vector[2];
break;
// ==================
case OP_IFNOT:
if (!OPA->_int)
st += st->b - 1; // offset the s++
break;
case OP_IF:
if (OPA->_int)
st += st->b - 1; // offset the s++
break;
case OP_GOTO:
st += 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->pr_xfunction->profile += profile - startprofile;
startprofile = profile;
pr->pr_xstatement = st - pr->pr_statements;
pr->pr_argc = st->op - OP_CALL0;
if (!OPA->function)
PR_RunError (pr, "NULL function");
newf = &pr->pr_functions[OPA->function];
if (newf->first_statement < 0) { // negative
// statements are
// built in functions
int i = -newf->first_statement;
if (i >= pr_numbuiltins)
PR_RunError (pr, "Bad builtin call number");
pr_builtins[i] (pr);
break;
}
st = &pr->pr_statements[PR_EnterFunction (pr, newf)];
break;
case OP_DONE:
case OP_RETURN:
pr->pr_globals[OFS_RETURN] = pr->pr_globals[(unsigned short) st->a];
pr->pr_globals[OFS_RETURN + 1] =
pr->pr_globals[(unsigned short) st->a + 1];
pr->pr_globals[OFS_RETURN + 2] =
pr->pr_globals[(unsigned short) st->a + 2];
st = &pr->pr_statements[PR_LeaveFunction (pr)];
if (pr->pr_depth == exitdepth)
return; // all done
break;
case OP_STATE:
ed = PROG_TO_EDICT (pr, pr->pr_global_struct->self);
ed->v.nextthink = pr->pr_global_struct->time + 0.1;
ed->v.frame = OPA->_float;
ed->v.think = OPB->function;
break;
// LordHavoc: to be enabled when Progs version 7 (or whatever it will be numbered) is finalized
/*
case OP_ADD_I:
OPC->_int = OPA->_int + OPB->_int;
break;
case OP_ADD_IF:
OPC->_int = OPA->_int + (int) OPB->_float;
break;
case OP_ADD_FI:
OPC->_float = OPA->_float + (float) OPB->_int;
break;
case OP_SUB_I:
OPC->_int = OPA->_int - OPB->_int;
break;
case OP_SUB_IF:
OPC->_int = OPA->_int - (int) OPB->_float;
break;
case OP_SUB_FI:
OPC->_float = OPA->_float - (float) OPB->_int;
break;
case OP_MUL_I:
OPC->_int = OPA->_int * OPB->_int;
break;
case OP_MUL_IF:
OPC->_int = OPA->_int * (int) OPB->_float;
break;
case OP_MUL_FI:
OPC->_float = OPA->_float * (float) OPB->_int;
break;
case OP_MUL_VI:
OPC->vector[0] = (float) OPB->_int * OPA->vector[0];
OPC->vector[1] = (float) OPB->_int * OPA->vector[1];
OPC->vector[2] = (float) OPB->_int * OPA->vector[2];
break;
case OP_DIV_VF:
{
float temp = 1.0f / OPB->_float;
OPC->vector[0] = temp * OPA->vector[0];
OPC->vector[1] = temp * OPA->vector[1];
OPC->vector[2] = temp * OPA->vector[2];
}
break;
case OP_DIV_I:
OPC->_int = OPA->_int / OPB->_int;
break;
case OP_DIV_IF:
OPC->_int = OPA->_int / (int) OPB->_float;
break;
case OP_DIV_FI:
OPC->_float = OPA->_float / (float) OPB->_int;
break;
case OP_CONV_IF:
OPC->_float = OPA->_int;
break;
case OP_CONV_FI:
OPC->_int = OPA->_float;
break;
case OP_BITAND_I:
OPC->_int = OPA->_int & OPB->_int;
break;
case OP_BITOR_I:
OPC->_int = OPA->_int | OPB->_int;
break;
case OP_BITAND_IF:
OPC->_int = OPA->_int & (int) OPB->_float;
break;
case OP_BITOR_IF:
OPC->_int = OPA->_int | (int) OPB->_float;
break;
case OP_BITAND_FI:
OPC->_float = (int) OPA->_float & OPB->_int;
break;
case OP_BITOR_FI:
OPC->_float = (int) OPA->_float | OPB->_int;
break;
case OP_GE_I:
OPC->_float = OPA->_int >= OPB->_int;
break;
case OP_LE_I:
OPC->_float = OPA->_int <= OPB->_int;
break;
case OP_GT_I:
OPC->_float = OPA->_int > OPB->_int;
break;
case OP_LT_I:
OPC->_float = OPA->_int < OPB->_int;
break;
case OP_AND_I:
OPC->_float = OPA->_int && OPB->_int;
break;
case OP_OR_I:
OPC->_float = OPA->_int || OPB->_int;
break;
case OP_GE_IF:
OPC->_float = (float) OPA->_int >= OPB->_float;
break;
case OP_LE_IF:
OPC->_float = (float) OPA->_int <= OPB->_float;
break;
case OP_GT_IF:
OPC->_float = (float) OPA->_int > OPB->_float;
break;
case OP_LT_IF:
OPC->_float = (float) OPA->_int < OPB->_float;
break;
case OP_AND_IF:
OPC->_float = (float) OPA->_int && OPB->_float;
break;
case OP_OR_IF:
OPC->_float = (float) OPA->_int || OPB->_float;
break;
case OP_GE_FI:
OPC->_float = OPA->_float >= (float) OPB->_int;
break;
case OP_LE_FI:
OPC->_float = OPA->_float <= (float) OPB->_int;
break;
case OP_GT_FI:
OPC->_float = OPA->_float > (float) OPB->_int;
break;
case OP_LT_FI:
OPC->_float = OPA->_float < (float) OPB->_int;
break;
case OP_AND_FI:
OPC->_float = OPA->_float && (float) OPB->_int;
break;
case OP_OR_FI:
OPC->_float = OPA->_float || (float) OPB->_int;
break;
case OP_NOT_I:
OPC->_float = !OPA->_int;
break;
case OP_EQ_I:
OPC->_float = OPA->_int == OPB->_int;
break;
case OP_EQ_IF:
OPC->_float = (float) OPA->_int == OPB->_float;
break;
case OP_EQ_FI:
OPC->_float = OPA->_float == (float) OPB->_int;
break;
case OP_NE_I:
OPC->_float = OPA->_int != OPB->_int;
break;
case OP_NE_IF:
OPC->_float = (float) OPA->_int != OPB->_float;
break;
case OP_NE_FI:
OPC->_float = OPA->_float != (float) OPB->_int;
break;
case OP_STORE_I:
OPB->_int = OPA->_int;
break;
case OP_STOREP_I:
if (pr_boundscheck->int_val
&& (OPB->_int < 0 || OPB->_int + 4 > pr->pr_edictareasize)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to write to an out of bounds edict\n");
return;
}
if (pr_boundscheck->int_val
&& (OPB->_int % pr->pr_edict_size <
((byte *) & (*pr->edicts)->v - (byte *) *pr->edicts))) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to write to an engine edict field\n");
return;
}
ptr = (eval_t *) ((byte *) *pr->edicts + OPB->_int);
ptr->_int = OPA->_int;
break;
case OP_LOAD_I:
if (pr_boundscheck->int_val
&& (OPA->edict < 0 || OPA->edict >= pr->pr_edictareasize)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to read an out of bounds edict number\n");
return;
}
if (pr_boundscheck->int_val
&& (OPB->_int < 0 || OPB->_int >= pr->progs->entityfields)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to read an invalid field in an edict\n");
return;
}
ed = PROG_TO_EDICT (pr, OPA->edict);
OPC->_int = ((eval_t *) ((int *) &ed->v + OPB->_int))->_int;
break;
case OP_GSTOREP_I:
case OP_GSTOREP_F:
case OP_GSTOREP_ENT:
case OP_GSTOREP_FLD: // integers
case OP_GSTOREP_S:
case OP_GSTOREP_FNC: // pointers
if (pr_boundscheck->int_val
&& (OPB->_int < 0 || OPB->_int >= pr->pr_globaldefs)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to write to an invalid indexed global\n");
return;
}
pr->pr_globals[OPB->_int] = OPA->_float;
break;
case OP_GSTOREP_V:
if (pr_boundscheck->int_val
&& (OPB->_int < 0 || OPB->_int + 2 >= pr->pr_globaldefs)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to write to an invalid indexed global\n");
return;
}
pr->pr_globals[OPB->_int] = OPA->vector[0];
pr->pr_globals[OPB->_int + 1] = OPA->vector[1];
pr->pr_globals[OPB->_int + 2] = OPA->vector[2];
break;
case OP_GADDRESS:
i = OPA->_int + (int) OPB->_float;
if (pr_boundscheck->int_val
&& (i < 0 || i >= pr->pr_globaldefs)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to address an out of bounds global\n");
return;
}
OPC->_float = pr->pr_globals[i];
break;
case OP_GLOAD_I:
case OP_GLOAD_F:
case OP_GLOAD_FLD:
case OP_GLOAD_ENT:
case OP_GLOAD_S:
case OP_GLOAD_FNC:
if (pr_boundscheck->int_val
&& (OPA->_int < 0 || OPA->_int >= pr->pr_globaldefs)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to read an invalid indexed global\n");
return;
}
OPC->_float = pr->pr_globals[OPA->_int];
break;
case OP_GLOAD_V:
if (pr_boundscheck->int_val
&& (OPA->_int < 0 || OPA->_int + 2 >= pr->pr_globaldefs)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to read an invalid indexed global\n");
return;
}
OPC->vector[0] = pr->pr_globals[OPA->_int];
OPC->vector[1] = pr->pr_globals[OPA->_int + 1];
OPC->vector[2] = pr->pr_globals[OPA->_int + 2];
break;
case OP_BOUNDCHECK:
if (OPA->_int < 0 || OPA->_int >= st->b) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs boundcheck failed at line number %d, value is < 0 or >= %d\n",
st->b, st->c);
return;
}
break;
*/
default:
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError (pr, "Bad opcode %i", st->op);
}
}
}
char *
PR_GetString (progs_t *pr, int num)
{
if (num < 0) {
// Con_DPrintf("GET:%d == %s\n", num, pr->pr_strtbl[-num]);
return pr->pr_strtbl[-num];
}
return pr->pr_strings + num;
}
int
PR_SetString (progs_t *pr, char *s)
{
int i;
if (s - pr->pr_strings < 0) {
for (i = 0; i <= pr->num_prstr; i++)
if (pr->pr_strtbl[i] == s)
break;
if (i < pr->num_prstr)
return -i;
if (pr->num_prstr == MAX_PRSTR - 1)
Sys_Error ("MAX_PRSTR");
pr->num_prstr++;
pr->pr_strtbl[pr->num_prstr] = s;
// Con_DPrintf("SET:%d == %s\n", -pr->num_prstr, s);
return -pr->num_prstr;
}
return (int) (s - pr->pr_strings);
}
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