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 3935bddd4769..000000000000 --- 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, -}; |