diff options
| author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
| commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
| tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mm/copypage-v3.S | |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/arm/mm/copypage-v3.S')
| -rw-r--r-- | arch/arm/mm/copypage-v3.S | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/arch/arm/mm/copypage-v3.S b/arch/arm/mm/copypage-v3.S new file mode 100644 index 000000000000..4940f1908316 --- /dev/null +++ b/arch/arm/mm/copypage-v3.S @@ -0,0 +1,67 @@ +/* + * linux/arch/arm/lib/copypage.S + * + * 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. + * + * ASM optimised string functions + */ +#include <linux/linkage.h> +#include <linux/init.h> +#include <asm/assembler.h> +#include <asm/constants.h> + + .text + .align 5 +/* + * ARMv3 optimised copy_user_page + * + * FIXME: do we need to handle cache stuff... + */ +ENTRY(v3_copy_user_page) + stmfd sp!, {r4, lr} @ 2 + mov r2, #PAGE_SZ/64 @ 1 + ldmia r1!, {r3, r4, ip, lr} @ 4+1 +1: stmia r0!, {r3, r4, ip, lr} @ 4 + ldmia r1!, {r3, r4, ip, lr} @ 4+1 + stmia r0!, {r3, r4, ip, lr} @ 4 + ldmia r1!, {r3, r4, ip, lr} @ 4+1 + stmia r0!, {r3, r4, ip, lr} @ 4 + ldmia r1!, {r3, r4, ip, lr} @ 4 + subs r2, r2, #1 @ 1 + stmia r0!, {r3, r4, ip, lr} @ 4 + ldmneia r1!, {r3, r4, ip, lr} @ 4 + bne 1b @ 1 + LOADREGS(fd, sp!, {r4, pc}) @ 3 + + .align 5 +/* + * ARMv3 optimised clear_user_page + * + * FIXME: do we need to handle cache stuff... + */ +ENTRY(v3_clear_user_page) + str lr, [sp, #-4]! + mov r1, #PAGE_SZ/64 @ 1 + mov r2, #0 @ 1 + mov r3, #0 @ 1 + mov ip, #0 @ 1 + mov lr, #0 @ 1 +1: stmia r0!, {r2, r3, ip, lr} @ 4 + stmia r0!, {r2, r3, ip, lr} @ 4 + stmia r0!, {r2, r3, ip, lr} @ 4 + stmia r0!, {r2, r3, ip, lr} @ 4 + subs r1, r1, #1 @ 1 + bne 1b @ 1 + ldr pc, [sp], #4 + + __INITDATA + + .type v3_user_fns, #object +ENTRY(v3_user_fns) + .long v3_clear_user_page + .long v3_copy_user_page + .size v3_user_fns, . - v3_user_fns |