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Change interrupt pending list end value to -1, to avoid linking an 

interrupt handler twice.

It may fix "sleep forever" bug.
This commit is contained in:
nakayama 2004-07-24 12:04:32 +00:00
parent 388343e340
commit 1d66d17d9d
1 changed files with 7 additions and 6 deletions
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13
sys/arch/sparc64/sparc64/locore.s
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@ -1,4 +1,4 @@
/* $NetBSD: locore.s,v 1.197 2004/04/09 19:41:57 petrov Exp $ */
/* $NetBSD: locore.s,v 1.198 2004/07/24 12:04:32 nakayama Exp $ */
/*
* Copyright (c) 1996-2002 Eduardo Horvath
@ -3984,7 +3984,7 @@ return_from_syscall:
.data
.globl intrpending
intrpending:
.space 16 * 8 * PTRSZ
.space 16 * 8 * PTRSZ, -1
#ifdef DEBUG
#define INTRDEBUG_VECTOR 0x1
@ -4443,9 +4443,9 @@ sparc_intr_retry:
1:
membar #StoreLoad ! Make sure any failed casxa insns complete
LDPTR [%l4], %l2 ! Check a slot
brz,pn %l2, intrcmplt ! Empty list?
clr %l7
cmp %l2, -1
beq,pn CCCR, intrcmplt ! Empty list?
mov -1, %l7
membar #LoadStore
CASPTR [%l4] ASI_N, %l2, %l7 ! Grab the entire list
cmp %l7, %l2
@ -4468,7 +4468,8 @@ sparc_intr_retry:
stx %g0, [%l1] ! Clear intr source
membar #Sync ! Should not be needed
0:
brnz,pn %l7, 2b ! 'Nother?
cmp %l7, -1
bne,pn CCCR, 2b ! 'Nother?
mov %l7, %l2
#else /* INTRLIST */