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DIAGNOSTIC check for mangled exception vectors.

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This commit is contained in:
bjh21 2000-12-10 01:02:04 +00:00
parent cae7ac2e3a
commit 477863502b
1 changed files with 7 additions and 2 deletions
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9
sys/arch/arm26/arm26/except.c
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@ -1,4 +1,4 @@
/* $NetBSD: except.c,v 1.14 2000/12/09 18:57:17 bjh21 Exp $ */
/* $NetBSD: except.c,v 1.15 2000/12/10 01:02:04 bjh21 Exp $ */
/*-
* Copyright (c) 1998, 1999, 2000 Ben Harris
* All rights reserved.
@ -32,7 +32,7 @@
#include <sys/param.h>
__KERNEL_RCSID(0, "$NetBSD: except.c,v 1.14 2000/12/09 18:57:17 bjh21 Exp $");
__KERNEL_RCSID(0, "$NetBSD: except.c,v 1.15 2000/12/10 01:02:04 bjh21 Exp $");
#include "opt_cputypes.h"
#include "opt_ddb.h"
@ -81,6 +81,7 @@ static void
userret(struct proc *p, vaddr_t pc, u_quad_t oticks)
{
int sig;
u_int32_t *ptr;
/* take pending signals */
while ((sig = CURSIG(p)) != 0)
@ -107,6 +108,10 @@ userret(struct proc *p, vaddr_t pc, u_quad_t oticks)
#ifdef DIAGNOSTIC
/* Mark trapframe as invalid. */
p->p_addr->u_pcb.pcb_tf = (void *)-1;
/* Check that the vectors are valid */
for (ptr = (u_int32_t *)0; ptr < 6; ptr++)
if (*ptr != 0xe59ff114)
panic("CPU vectors mangled");
#endif
}