2 * linux/arch/arm26/lib/copypage.S
4 * Copyright (C) 1995-1999 Russell King
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * ASM optimised string functions
12 #include <linux/linkage.h>
13 #include <asm/assembler.h>
14 #include <asm/asm_offsets.h>
19 * ARMv3 optimised copy_user_page
21 * FIXME: rmk do we need to handle cache stuff...
22 * FIXME: im is this right on ARM26?
24 ENTRY(__copy_user_page)
25 stmfd sp!, {r4, lr} @ 2
26 mov r2, #PAGE_SZ/64 @ 1
27 ldmia r1!, {r3, r4, ip, lr} @ 4+1
28 1: stmia r0!, {r3, r4, ip, lr} @ 4
29 ldmia r1!, {r3, r4, ip, lr} @ 4+1
30 stmia r0!, {r3, r4, ip, lr} @ 4
31 ldmia r1!, {r3, r4, ip, lr} @ 4+1
32 stmia r0!, {r3, r4, ip, lr} @ 4
33 ldmia r1!, {r3, r4, ip, lr} @ 4
35 stmia r0!, {r3, r4, ip, lr} @ 4
36 ldmneia r1!, {r3, r4, ip, lr} @ 4
38 LOADREGS(fd, sp!, {r4, pc}) @ 3
42 * ARMv3 optimised clear_user_page
44 * FIXME: rmk do we need to handle cache stuff...
46 ENTRY(__clear_user_page)
48 mov r1, #PAGE_SZ/64 @ 1
53 1: stmia r0!, {r2, r3, ip, lr} @ 4
54 stmia r0!, {r2, r3, ip, lr} @ 4
55 stmia r0!, {r2, r3, ip, lr} @ 4
56 stmia r0!, {r2, r3, ip, lr} @ 4
61 .section ".init.text", #alloc, #execinstr