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Make sure the FPU is enabled if we're about to drop to ddb due to 

some catastrophic problem.
This commit is contained in:
scw 2003-03-27 17:29:17 +00:00
parent 9453ca1e91
commit 00c69643a2
1 changed files with 19 additions and 4 deletions
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23
sys/arch/sh5/sh5/trap.c
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@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.20 2003/03/19 11:37:57 scw Exp $ */
/* $NetBSD: trap.c,v 1.21 2003/03/27 17:29:17 scw Exp $ */
/*
* Copyright 2002 Wasabi Systems, Inc.
@ -157,6 +157,14 @@ trap(struct lwp *l, struct trapframe *tf)
default:
dopanic:
(void) splhigh();
{
register_t ssr;
/* Make sure the FPU is enabled */
__asm __volatile("getcon ssr, %0" : "=r"(ssr));
ssr &= ~SH5_CONREG_SR_FD;
__asm __volatile("putcon %0, ssr" :: "r"(ssr));
}
printf("\ntrap: %s in %s mode\n",
trap_type(traptype), USERMODE(tf) ? "user" : "kernel");
printf("SSR=0x%x, SPC=0x%lx, TEA=0x%lx, TRA=0x%x\n",
@ -435,6 +443,15 @@ panic_trap(struct trapframe *tf, register_t ssr, register_t spc,
tlbregs[7] = ci->ci_tscratch.ts_tr[0];
tlbregs[8] = ci->ci_tscratch.ts_tr[1];
{
register_t ssr;
/* Make sure the FPU is enabled */
__asm __volatile("getcon ssr, %0" : "=r"(ssr));
ssr &= ~SH5_CONREG_SR_FD;
__asm __volatile("putcon %0, ssr" :: "r"(ssr));
}
/*
* Allow subsequent exceptions.
*/
@ -478,10 +495,8 @@ panic_trap(struct trapframe *tf, register_t ssr, register_t spc,
printf(" SSR: 0x%08x\n", (u_int)excf.es_ssr);
printf(" USR: 0x%04x\n", (u_int)excf.es_usr);
#ifdef DIAGNOSTIC
dump_trapframe(printf, "\n", tf);
#endif
#ifdef DDB
dump_trapframe(printf, "\n", tf);
kdb_trap(0, tf);
#endif
panic("panic trap");