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Shave off few instructions when doing ldtlb.

This commit is contained in:
uwe 2007-03-17 17:23:31 +00:00
parent 3f372aff43
commit 911335e303
1 changed files with 8 additions and 12 deletions
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20
sys/arch/sh3/sh3/exception_vector.S
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@ -1,4 +1,4 @@
/* $NetBSD: exception_vector.S,v 1.26 2007/03/17 14:23:07 uwe Exp $ */ /* $NetBSD: exception_vector.S,v 1.27 2007/03/17 17:23:31 uwe Exp $ */
/*- /*-
* Copyright (c) 2002 The NetBSD Foundation, Inc. * Copyright (c) 2002 The NetBSD Foundation, Inc.
@ -52,7 +52,7 @@
#define _ALIGN_TEXT .align 5 #define _ALIGN_TEXT .align 5
#include <sh3/asm.h> #include <sh3/asm.h>
__KERNEL_RCSID(0, "$NetBSD: exception_vector.S,v 1.26 2007/03/17 14:23:07 uwe Exp $") __KERNEL_RCSID(0, "$NetBSD: exception_vector.S,v 1.27 2007/03/17 17:23:31 uwe Exp $")
/* /*
@ -179,20 +179,16 @@ NENTRY(sh3_vector_tlbmiss)
mov #(SH3_EXPEVT & 0xff), r0 mov #(SH3_EXPEVT & 0xff), r0
!! load entry for this uarea page into tlb !! load entry for this uarea page into tlb
5: mov.l @r1, r2 ! upte->data: u-area PTE 5: mov #(SH3_PTEH & 0xff), r2
mov #(SH3_PTEL & 0xff), r1 mov.l @r1, r1 ! md_upte[i]->data
mov.l r2, @r1 mov.l @r2, r3 ! save ASID
mov.l r0, @r2 ! SH3_PTEH = { VPN, ASID = 0 }
mov #(SH3_PTEH & 0xff), r1 mov.l r1, @(4, r2) ! SH3_PTEL = md_upte[i]->data
mov.l @r1, r2
mov.l .L3_VPN_MASK, r0
and r2, r0
mov.l r0, @r1 ! ASID 0
ldtlb ldtlb
bra 99f ! return bra 99f ! return
mov.l r2, @r1 ! restore ASID mov.l r3, @r2 ! restore ASID
#endif /* !P1_STACK */ #endif /* !P1_STACK */
!! tlb_exception(curlwp, trapframe, tea) !! tlb_exception(curlwp, trapframe, tea)