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__copy_user_page-sh4.S
Package: linux-2.4.20.tar.gz [view]
Upload User: jlfgdled
Upload Date: 2013-04-10
Package Size: 33168k
Code Size: 1k
Category:
Linux-Unix program
Development Platform:
Unix_Linux
- /* $Id: __copy_user_page-sh4.S,v 1.1 2001/07/23 09:02:17 gniibe Exp $
- *
- * __copy_user_page implementation of SuperH
- *
- * Copyright (C) 2001 Niibe Yutaka & Kaz Kojima
- *
- */
- /*
- * __copy_user_page
- * @to: P1 address (with same color)
- * @from: P1 address
- * @orig_to: P1 address
- *
- * void __copy_user_page(void *to, void *from, void *orig_to)
- */
- /*
- * r0, r1, r2, r3, r4, r5, r6, r7 --- scratch
- * r8 --- from + 4096
- * r9 --- orig_to
- * r10 --- to
- * r11 --- from
- */
- #include <linux/linkage.h>
- ENTRY(__copy_user_page)
- mov.l r8,@-r15
- mov.l r9,@-r15
- mov.l r10,@-r15
- mov.l r11,@-r15
- mov r4,r10
- mov r5,r11
- mov r6,r9
- mov r5,r8
- mov.w .L4096,r0
- add r0,r8
- !
- 1: ocbi @r9
- add #32,r9
- mov.l @r11+,r0
- mov.l @r11+,r1
- mov.l @r11+,r2
- mov.l @r11+,r3
- mov.l @r11+,r4
- mov.l @r11+,r5
- mov.l @r11+,r6
- mov.l @r11+,r7
- movca.l r0,@r10
- mov r10,r0
- add #32,r10
- mov.l r7,@-r10
- mov.l r6,@-r10
- mov.l r5,@-r10
- mov.l r4,@-r10
- mov.l r3,@-r10
- mov.l r2,@-r10
- mov.l r1,@-r10
- ocbwb @r0
- cmp/eq r11,r8
- bf/s 1b
- add #28,r10
- !
- mov.l @r15+,r11
- mov.l @r15+,r10
- mov.l @r15+,r9
- mov.l @r15+,r8
- rts
- nop
- .L4096: .word 4096