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quakeforge/libs/gamecode/pr_exec.c

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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
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdarg.h>
#include "QF/console.h"
#include "QF/cvar.h"
#include "QF/progs.h"
#include "QF/sys.h"
#include "QF/zone.h"
#include "compat.h"
//=============================================================================
/*
PR_PrintStatement
*/
void
PR_PrintStatement (progs_t * pr, dstatement_t *s)
{
int i;
int addr = s - pr->pr_statements;
opcode_t *op;
if (pr_debug->int_val && pr->debug) {
const char *source_line = PR_Get_Source_Line (pr, addr);
if (source_line)
Con_Printf ("%s\n", source_line);
}
Con_Printf ("%-7d ", addr);
op = PR_Opcode (s->op);
if (op) {
Con_Printf ("%s ", op->opname);
i = strlen (op->opname);
for (; i < 10; i++)
Con_Printf (" ");
}
if (s->op == OP_IF || s->op == OP_IFNOT)
Con_Printf ("%sbranch %i (%i)",
PR_GlobalString (pr, (unsigned short) s->a), s->b,
addr + s->b);
else if (s->op == OP_GOTO) {
Con_Printf ("branch %i (%i)", s->a, addr + s->a);
} else if ((unsigned int) (s->op - OP_STORE_F) < 6) {
Con_Printf ("%s", PR_GlobalString (pr, (unsigned short) s->a));
Con_Printf ("%s",
PR_GlobalStringNoContents (pr, (unsigned short) s->b));
} else {
if (s->a)
Con_Printf ("%s", PR_GlobalString (pr, (unsigned short) s->a));
if (s->b)
Con_Printf ("%s", PR_GlobalString (pr, (unsigned short) s->b));
if (s->c)
Con_Printf ("%s",
PR_GlobalStringNoContents (pr, (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, const char *error, ...)
{
va_list argptr;
char string[1024];
va_start (argptr, error);
vsnprintf (string, sizeof (string), error, argptr);
va_end (argptr);
if (pr_debug->int_val && pr->debug) {
int addr = pr->pr_xstatement;
while (!PR_Get_Source_Line (pr, addr))
addr--;
while (addr != pr->pr_xstatement)
PR_PrintStatement (pr, pr->pr_statements + addr++);
}
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 PR_Error can
// shutdown functions
PR_Error (pr, "Program error");
}
/*
PR_EnterFunction
Returns the new program statement counter
*/
int
PR_EnterFunction (progs_t * pr, dfunction_t *f)
{
int i, j, c, o;
//printf("%s:\n", PR_GetString(pr,f->s_name));
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");
memcpy (&pr->localstack[pr->localstack_used],
&pr->pr_globals[f->parm_start],
sizeof (pr_type_t) * c);
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++) {
memcpy (&pr->pr_globals[o],
&pr->pr_globals[OFS_PARM0 + i * 3 + j],
sizeof (pr_type_t));
o++;
}
}
pr->pr_xfunction = f;
return f->first_statement - 1; // offset the s++
}
/*
PR_LeaveFunction
*/
int
PR_LeaveFunction (progs_t * pr)
{
int c;
if (pr->pr_depth <= 0)
PR_Error (pr, "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");
memcpy (&pr->pr_globals[pr->pr_xfunction->parm_start],
&pr->localstack[pr->localstack_used],
sizeof (pr_type_t) * c);
// 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
The interpretation main loop
*/
#define OPA (pr->pr_globals[(unsigned short) st->a])
#define OPB (pr->pr_globals[(unsigned short) st->b])
#define OPC (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;
pr_type_t *ptr;
int profile, startprofile;
if (!fnum || fnum >= pr->progs->numfunctions) {
if (*pr->globals.self)
ED_Print (pr, PROG_TO_EDICT (pr, *pr->globals.self));
PR_Error (pr, "PR_ExecuteProgram: NULL function");
}
f = &pr->pr_functions[fnum];
//printf("%s:\n", PR_GetString(pr,f->s_name));
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 (!pr->no_exec_limit
&& ++profile > 1000000) {
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_var = OPA.float_var + OPB.float_var;
break;
case OP_ADD_V:
OPC.vector_var[0] = OPA.vector_var[0] + OPB.vector_var[0];
OPC.vector_var[1] = OPA.vector_var[1] + OPB.vector_var[1];
OPC.vector_var[2] = OPA.vector_var[2] + OPB.vector_var[2];
break;
case OP_ADD_S:
{
char *a = PR_GetString (pr, OPA.string_var);
char *b = PR_GetString (pr, OPB.string_var);
int lena = strlen (a);
int size = lena + strlen (b) + 1;
char *c = Hunk_TempAlloc (size);
strcpy (c, a);
strcpy (c + lena, b);
OPC.string_var = PR_SetString (pr, c);
}
break;
case OP_SUB_F:
OPC.float_var = OPA.float_var - OPB.float_var;
break;
case OP_SUB_V:
OPC.vector_var[0] = OPA.vector_var[0] - OPB.vector_var[0];
OPC.vector_var[1] = OPA.vector_var[1] - OPB.vector_var[1];
OPC.vector_var[2] = OPA.vector_var[2] - OPB.vector_var[2];
break;
case OP_MUL_F:
OPC.float_var = OPA.float_var * OPB.float_var;
break;
case OP_MUL_V:
OPC.float_var =
OPA.vector_var[0] * OPB.vector_var[0] +
OPA.vector_var[1] * OPB.vector_var[1] +
OPA.vector_var[2] * OPB.vector_var[2];
break;
case OP_MUL_FV:
OPC.vector_var[0] = OPA.float_var * OPB.vector_var[0];
OPC.vector_var[1] = OPA.float_var * OPB.vector_var[1];
OPC.vector_var[2] = OPA.float_var * OPB.vector_var[2];
break;
case OP_MUL_VF:
OPC.vector_var[0] = OPB.float_var * OPA.vector_var[0];
OPC.vector_var[1] = OPB.float_var * OPA.vector_var[1];
OPC.vector_var[2] = OPB.float_var * OPA.vector_var[2];
break;
case OP_DIV_F:
OPC.float_var = OPA.float_var / OPB.float_var;
break;
case OP_BITAND:
OPC.float_var = (int) OPA.float_var & (int) OPB.float_var;
break;
case OP_BITOR:
OPC.float_var = (int) OPA.float_var | (int) OPB.float_var;
break;
case OP_GE:
OPC.float_var = OPA.float_var >= OPB.float_var;
break;
case OP_LE:
OPC.float_var = OPA.float_var <= OPB.float_var;
break;
case OP_GT:
OPC.float_var = OPA.float_var > OPB.float_var;
break;
case OP_LT:
OPC.float_var = OPA.float_var < OPB.float_var;
break;
case OP_AND: // OPA and OPB have to be float for -0.0
OPC.integer_var = OPA.float_var && OPB.float_var;
break;
case OP_OR: // OPA and OPB have to be float for -0.0
OPC.integer_var = OPA.float_var || OPB.float_var;
break;
case OP_NOT_F:
OPC.integer_var = !OPA.float_var;
break;
case OP_NOT_V:
OPC.integer_var = !OPA.vector_var[0] && !OPA.vector_var[1]
&& !OPA.vector_var[2];
break;
case OP_NOT_S:
OPC.integer_var = !OPA.string_var || !*PR_GetString (pr, OPA.string_var);
break;
case OP_NOT_FNC:
OPC.integer_var = !OPA.func_var;
break;
case OP_NOT_ENT:
OPC.integer_var = !OPA.entity_var;
break;
case OP_EQ_F:
OPC.integer_var = OPA.float_var == OPB.float_var;
break;
case OP_EQ_V:
OPC.integer_var = (OPA.vector_var[0] == OPB.vector_var[0])
&& (OPA.vector_var[1] == OPB.vector_var[1])
&& (OPA.vector_var[2] == OPB.vector_var[2]);
break;
case OP_EQ_E:
OPC.integer_var = OPA.integer_var == OPB.integer_var;
break;
case OP_EQ_FNC:
OPC.integer_var = OPA.func_var == OPB.func_var;
break;
case OP_NE_F:
OPC.integer_var = OPA.float_var != OPB.float_var;
break;
case OP_NE_V:
OPC.integer_var = (OPA.vector_var[0] != OPB.vector_var[0])
|| (OPA.vector_var[1] != OPB.vector_var[1])
|| (OPA.vector_var[2] != OPB.vector_var[2]);
break;
case OP_LE_S:
case OP_GE_S:
case OP_LT_S:
case OP_GT_S:
case OP_NE_S:
case OP_EQ_S:
{
int cmp = strcmp (PR_GetString (pr, OPA.string_var),
PR_GetString (pr, OPB.string_var));
switch (st->op) {
case OP_LE_S: cmp = (cmp <= 0); break;
case OP_GE_S: cmp = (cmp >= 0); break;
case OP_LT_S: cmp = (cmp < 0); break;
case OP_GT_S: cmp = (cmp > 0); break;
case OP_NE_S: break;
case OP_EQ_S: cmp = !cmp; break;
}
OPC.integer_var = cmp;
}
break;
case OP_NE_E:
OPC.integer_var = OPA.integer_var != OPB.integer_var;
break;
case OP_NE_FNC:
OPC.integer_var = OPA.func_var != OPB.func_var;
break;
// ==================
case OP_STORE_F:
case OP_STORE_ENT:
case OP_STORE_FLD: // integers
case OP_STORE_S:
case OP_STORE_FNC: // pointers
OPB.integer_var = OPA.integer_var;
break;
case OP_STORE_V:
OPB.vector_var[0] = OPA.vector_var[0];
OPB.vector_var[1] = OPA.vector_var[1];
OPB.vector_var[2] = OPA.vector_var[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.integer_var < 0 || OPB.integer_var + 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.integer_var % 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 = (pr_type_t*)((int)*pr->edicts + OPB.integer_var);
ptr->integer_var = OPA.integer_var;
break;
case OP_STOREP_V:
if (pr_boundscheck->int_val
&& (OPB.integer_var < 0 || OPB.integer_var + 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 = (pr_type_t*)((int)*pr->edicts + OPB.integer_var);
ptr->vector_var[0] = OPA.vector_var[0];
ptr->vector_var[1] = OPA.vector_var[1];
ptr->vector_var[2] = OPA.vector_var[2];
break;
case OP_ADDRESS:
if (pr_boundscheck->int_val
&& (OPA.entity_var < 0 || OPA.entity_var >= 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.entity_var == 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.integer_var < 0 || OPB.integer_var >= 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.entity_var);
OPC.integer_var = (int)&ed->v[OPB.integer_var] - (int)*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.entity_var < 0 || OPA.entity_var >= 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.integer_var < 0 || OPB.integer_var >= 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.entity_var);
OPC.integer_var = ed->v[OPB.integer_var].integer_var;
break;
case OP_LOAD_V:
if (pr_boundscheck->int_val
&& (OPA.entity_var < 0 || OPA.entity_var >= 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.integer_var < 0
|| OPB.integer_var + 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.entity_var);
memcpy (&OPC, &ed->v[OPB.integer_var], 3 * sizeof (OPC));
break;
// ==================
case OP_IFNOT:
if (!OPA.integer_var)
st += st->b - 1; // offset the s++
break;
case OP_IF:
if (OPA.integer_var)
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.func_var)
PR_RunError (pr, "NULL function");
newf = &pr->pr_functions[OPA.func_var];
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:
memcpy (&pr->pr_globals[OFS_RETURN], &OPA, 3 * sizeof (OPA));
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->globals.self);
ed->v[pr->fields.nextthink].float_var = *pr->globals.time + 0.1;
ed->v[pr->fields.frame].float_var = OPA.float_var;
ed->v[pr->fields.think].func_var = OPB.func_var;
break;
case OP_ADD_I:
OPC.integer_var = OPA.integer_var + OPB.integer_var;
break;
case OP_SUB_I:
OPC.integer_var = OPA.integer_var - OPB.integer_var;
break;
case OP_MUL_I:
OPC.integer_var = OPA.integer_var * OPB.integer_var;
break;
/*
case OP_DIV_VF:
{
float temp = 1.0f / OPB.float_var;
OPC.vector_var[0] = temp * OPA.vector_var[0];
OPC.vector_var[1] = temp * OPA.vector_var[1];
OPC.vector_var[2] = temp * OPA.vector_var[2];
}
break;
*/
case OP_DIV_I:
OPC.integer_var = OPA.integer_var / OPB.integer_var;
break;
case OP_CONV_IF:
OPC.float_var = OPA.integer_var;
break;
case OP_CONV_FI:
OPC.integer_var = OPA.float_var;
break;
case OP_BITAND_I:
OPC.integer_var = OPA.integer_var & OPB.integer_var;
break;
case OP_BITOR_I:
OPC.integer_var = OPA.integer_var | OPB.integer_var;
break;
case OP_GE_I:
OPC.integer_var = OPA.integer_var >= OPB.integer_var;
break;
case OP_LE_I:
OPC.integer_var = OPA.integer_var <= OPB.integer_var;
break;
case OP_GT_I:
OPC.integer_var = OPA.integer_var > OPB.integer_var;
break;
case OP_LT_I:
OPC.integer_var = OPA.integer_var < OPB.integer_var;
break;
case OP_AND_I:
OPC.integer_var = OPA.integer_var && OPB.integer_var;
break;
case OP_OR_I:
OPC.integer_var = OPA.integer_var || OPB.integer_var;
break;
case OP_NOT_I:
OPC.integer_var = !OPA.integer_var;
break;
case OP_EQ_I:
OPC.integer_var = OPA.integer_var == OPB.integer_var;
break;
case OP_NE_I:
OPC.integer_var = OPA.integer_var != OPB.integer_var;
break;
case OP_STORE_I:
OPB.integer_var = OPA.integer_var;
break;
case OP_STOREP_I:
if (pr_boundscheck->int_val
&& (OPB.integer_var < 0 || OPB.integer_var + 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.integer_var % 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 = (pr_type_t*)((int)*pr->edicts + OPB.integer_var);
ptr->integer_var = OPA.integer_var;
break;
case OP_LOAD_I:
if (pr_boundscheck->int_val
&& (OPA.entity_var < 0 || OPA.entity_var >= 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.integer_var < 0 || OPB.integer_var >= pr->progs->entityfields)) {
pr->pr_xstatement = st - pr->pr_statements;
PR_RunError
(pr, "Progs attempted to read an invalid field in an entity_var\n");
return;
}
ed = PROG_TO_EDICT (pr, OPA.entity_var);
OPC.integer_var = ed->v[OPB.integer_var].integer_var;
break;
// LordHavoc: to be enabled when Progs version 7 (or whatever it will be numbered) is finalized
/*
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.integer_var < 0 || OPB.integer_var >= 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.integer_var] = OPA.float_var;
break;
case OP_GSTOREP_V:
if (pr_boundscheck->int_val
&& (OPB.integer_var < 0 || OPB.integer_var + 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.integer_var] = OPA.vector_var[0];
pr->pr_globals[OPB.integer_var + 1] = OPA.vector_var[1];
pr->pr_globals[OPB.integer_var + 2] = OPA.vector_var[2];
break;
case OP_GADDRESS:
i = OPA.integer_var + (int) OPB.float_var;
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_var = 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.integer_var < 0 || OPA.integer_var >= 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_var = pr->pr_globals[OPA.integer_var];
break;
case OP_GLOAD_V:
if (pr_boundscheck->int_val
&& (OPA.integer_var < 0 || OPA.integer_var + 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_var[0] = pr->pr_globals[OPA.integer_var];
OPC.vector_var[1] = pr->pr_globals[OPA.integer_var + 1];
OPC.vector_var[2] = pr->pr_globals[OPA.integer_var + 2];
break;
case OP_BOUNDCHECK:
if (OPA.integer_var < 0 || OPA.integer_var >= 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);
}
}
}
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