diff options
Diffstat (limited to 'arch/arm/mm/copypage-v3.c')
| -rw-r--r-- | arch/arm/mm/copypage-v3.c | 81 | 
1 files changed, 0 insertions, 81 deletions
diff --git a/arch/arm/mm/copypage-v3.c b/arch/arm/mm/copypage-v3.c deleted file mode 100644 index 3935bddd476..00000000000 --- a/arch/arm/mm/copypage-v3.c +++ /dev/null @@ -1,81 +0,0 @@ -/* - *  linux/arch/arm/mm/copypage-v3.c - * - *  Copyright (C) 1995-1999 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/init.h> -#include <linux/highmem.h> - -/* - * ARMv3 optimised copy_user_highpage - * - * FIXME: do we need to handle cache stuff... - */ -static void __naked -v3_copy_user_page(void *kto, const void *kfrom) -{ -	asm("\n\ -	stmfd	sp!, {r4, lr}			@	2\n\ -	mov	r2, %2				@	1\n\ -	ldmia	%0!, {r3, r4, ip, lr}		@	4+1\n\ -1:	stmia	%1!, {r3, r4, ip, lr}		@	4\n\ -	ldmia	%0!, {r3, r4, ip, lr}		@	4+1\n\ -	stmia	%1!, {r3, r4, ip, lr}		@	4\n\ -	ldmia	%0!, {r3, r4, ip, lr}		@	4+1\n\ -	stmia	%1!, {r3, r4, ip, lr}		@	4\n\ -	ldmia	%0!, {r3, r4, ip, lr}		@	4\n\ -	subs	r2, r2, #1			@	1\n\ -	stmia	%1!, {r3, r4, ip, lr}		@	4\n\ -	ldmneia	%0!, {r3, r4, ip, lr}		@	4\n\ -	bne	1b				@	1\n\ -	ldmfd	sp!, {r4, pc}			@	3" -	: -	: "r" (kfrom), "r" (kto), "I" (PAGE_SIZE / 64)); -} - -void v3_copy_user_highpage(struct page *to, struct page *from, -	unsigned long vaddr, struct vm_area_struct *vma) -{ -	void *kto, *kfrom; - -	kto = kmap_atomic(to); -	kfrom = kmap_atomic(from); -	v3_copy_user_page(kto, kfrom); -	kunmap_atomic(kfrom); -	kunmap_atomic(kto); -} - -/* - * ARMv3 optimised clear_user_page - * - * FIXME: do we need to handle cache stuff... - */ -void v3_clear_user_highpage(struct page *page, unsigned long vaddr) -{ -	void *ptr, *kaddr = kmap_atomic(page); -	asm volatile("\n\ -	mov	r1, %2				@ 1\n\ -	mov	r2, #0				@ 1\n\ -	mov	r3, #0				@ 1\n\ -	mov	ip, #0				@ 1\n\ -	mov	lr, #0				@ 1\n\ -1:	stmia	%0!, {r2, r3, ip, lr}		@ 4\n\ -	stmia	%0!, {r2, r3, ip, lr}		@ 4\n\ -	stmia	%0!, {r2, r3, ip, lr}		@ 4\n\ -	stmia	%0!, {r2, r3, ip, lr}		@ 4\n\ -	subs	r1, r1, #1			@ 1\n\ -	bne	1b				@ 1" -	: "=r" (ptr) -	: "0" (kaddr), "I" (PAGE_SIZE / 64) -	: "r1", "r2", "r3", "ip", "lr"); -	kunmap_atomic(kaddr); -} - -struct cpu_user_fns v3_user_fns __initdata = { -	.cpu_clear_user_highpage = v3_clear_user_highpage, -	.cpu_copy_user_highpage	= v3_copy_user_highpage, -};  |