From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: 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! --- arch/arm/lib/copy_page.S | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 arch/arm/lib/copy_page.S (limited to 'arch/arm/lib/copy_page.S') diff --git a/arch/arm/lib/copy_page.S b/arch/arm/lib/copy_page.S new file mode 100644 index 000000000000..4c38abdbe497 --- /dev/null +++ b/arch/arm/lib/copy_page.S @@ -0,0 +1,46 @@ +/* + * 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 +#include +#include + +#define COPY_COUNT (PAGE_SZ/64 PLD( -1 )) + + .text + .align 5 +/* + * StrongARM optimised copy_page routine + * now 1.78bytes/cycle, was 1.60 bytes/cycle (50MHz bus -> 89MB/s) + * Note that we probably achieve closer to the 100MB/s target with + * the core clock switching. + */ +ENTRY(copy_page) + stmfd sp!, {r4, lr} @ 2 + PLD( pld [r1, #0] ) + PLD( pld [r1, #32] ) + mov r2, #COPY_COUNT @ 1 + ldmia r1!, {r3, r4, ip, lr} @ 4+1 +1: PLD( pld [r1, #64] ) + PLD( pld [r1, #96] ) +2: 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 + ldmgtia r1!, {r3, r4, ip, lr} @ 4 + bgt 1b @ 1 + PLD( ldmeqia r1!, {r3, r4, ip, lr} ) + PLD( beq 2b ) + LOADREGS(fd, sp!, {r4, pc}) @ 3 -- cgit v1.2.3