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Rearrange instructions for better use of pipeline. This shaves off 0.5%

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of time on interrupt/trap entry on my Athlon 1800.
This commit is contained in:
junyoung 2003-10-04 05:57:51 +00:00
parent e59ff2cb68
commit d1486d51cb
1 changed files with 5 additions and 5 deletions
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10
sys/arch/i386/include/frameasm.h
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@ -1,4 +1,4 @@
/* $NetBSD: frameasm.h,v 1.2 2003/01/17 23:10:29 thorpej Exp $ */ /* $NetBSD: frameasm.h,v 1.3 2003/10/04 05:57:51 junyoung Exp $ */
#ifndef _I386_FRAMEASM_H_ #ifndef _I386_FRAMEASM_H_
#define _I386_FRAMEASM_H_ #define _I386_FRAMEASM_H_
@ -48,21 +48,21 @@
subl $TF_PUSHSIZE,%esp ; \ subl $TF_PUSHSIZE,%esp ; \
movl %gs,TF_GS(%esp) ; \ movl %gs,TF_GS(%esp) ; \
movl %fs,TF_FS(%esp) ; \ movl %fs,TF_FS(%esp) ; \
movl %eax,TF_EAX(%esp) ; \
movl %es,TF_ES(%esp) ; \ movl %es,TF_ES(%esp) ; \
movl %ds,TF_DS(%esp) ; \ movl %ds,TF_DS(%esp) ; \
movl $GSEL(GDATA_SEL, SEL_KPL),%eax ; \
movl %edi,TF_EDI(%esp) ; \ movl %edi,TF_EDI(%esp) ; \
movl %esi,TF_ESI(%esp) ; \ movl %esi,TF_ESI(%esp) ; \
movl %eax,TF_EAX(%esp) ; \
movl $GSEL(GDATA_SEL, SEL_KPL),%eax ; \
movl %eax,%ds ; \ movl %eax,%ds ; \
movl %ebp,TF_EBP(%esp) ; \ movl %ebp,TF_EBP(%esp) ; \
movl %eax,%es ; \ movl %eax,%es ; \
movl %ebx,TF_EBX(%esp) ; \ movl %ebx,TF_EBX(%esp) ; \
movl %eax,%gs ; \ movl %eax,%gs ; \
movl $GSEL(GCPU_SEL, SEL_KPL),%eax ; \
movl %edx,TF_EDX(%esp) ; \ movl %edx,TF_EDX(%esp) ; \
movl %eax,%fs ; \ movl $GSEL(GCPU_SEL, SEL_KPL),%eax ; \
movl %ecx,TF_ECX(%esp) ; \ movl %ecx,TF_ECX(%esp) ; \
movl %eax,%fs ; \
TLOG TLOG
#define INTRFASTEXIT \ #define INTRFASTEXIT \