Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Use callee-saved registers in RAS processing.

Browse Source
This commit is contained in:
gmcgarry 2002-12-17 20:49:07 +00:00
parent 7443ad1b01
commit 5abd84e433
1 changed files with 4 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
sys/arch/i386/i386/locore.S
View File

@ -1,4 +1,4 @@
/* $NetBSD: locore.S,v 1.3 2002/12/17 19:47:15 gmcgarry Exp $ */
/* $NetBSD: locore.S,v 1.4 2002/12/17 20:49:07 gmcgarry Exp $ */
/*-
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@ -1944,22 +1944,19 @@ switch_restored:
/*
* Check for restartable atomic sequences (RAS)
* XXX %edi reloads are not necessary here as %edi is callee-saved!
*/
movl CPUVAR(CURPROC),%edi
cmpl $0,P_NRAS(%edi)
je 1f
movl P_MD_REGS(%edi),%edx
movl TF_EIP(%edx),%eax
movl P_MD_REGS(%edi),%ebx
movl TF_EIP(%ebx),%eax
pushl %eax
pushl %edi
call _C_LABEL(ras_lookup)
addl $8,%esp
cmpl $-1,%eax
je 1f
movl CPUVAR(CURPROC),%edi
movl P_MD_REGS(%edi),%edx
movl %eax,TF_EIP(%edx)
movl %eax,TF_EIP(%ebx)
1:
switch_return: