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Print a more informative is a uncatchabl DSI or ISI exeception happens in 

kernel mode.
This commit is contained in:
matt 2001-06-10 07:49:13 +00:00
parent 1930cfd7dc
commit b9ef9e99da
1 changed files with 10 additions and 2 deletions
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12
sys/arch/powerpc/powerpc/trap.c
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@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.43 2001/06/06 17:36:03 matt Exp $ */ /* $NetBSD: trap.c,v 1.44 2001/06/10 07:49:13 matt Exp $ */
/* /*
* Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -133,7 +133,10 @@ trap(frame)
} }
map = kernel_map; map = kernel_map;
} }
goto brain_damage; printf("trap: kernel %s DSI @ %#x by %#x (DSISR %#x)\n",
(frame->dsisr & DSISR_STORE) ? "write" : "read",
frame->dar, frame->srr0, frame->dsisr);
goto brain_damage2;
case EXC_DSI|EXC_USER: case EXC_DSI|EXC_USER:
KERNEL_PROC_LOCK(p); KERNEL_PROC_LOCK(p);
if (frame->dsisr & DSISR_STORE) if (frame->dsisr & DSISR_STORE)
@ -158,6 +161,10 @@ trap(frame)
} }
KERNEL_PROC_UNLOCK(p); KERNEL_PROC_UNLOCK(p);
break; break;
case EXC_ISI:
printf("trap: kernel ISI by %#x (SRR1 %#x)\n",
frame->dar, frame->srr0, frame->srr1);
goto brain_damage2;
case EXC_ISI|EXC_USER: case EXC_ISI|EXC_USER:
KERNEL_PROC_LOCK(p); KERNEL_PROC_LOCK(p);
ftype = VM_PROT_READ | VM_PROT_EXECUTE; ftype = VM_PROT_READ | VM_PROT_EXECUTE;
@ -338,6 +345,7 @@ syscall_bad:
default: default:
brain_damage: brain_damage:
printf("trap type %x at %x\n", type, frame->srr0); printf("trap type %x at %x\n", type, frame->srr0);
brain_damage2:
#ifdef DDB #ifdef DDB
if (kdb_trap(type, frame)) if (kdb_trap(type, frame))
return; return;