mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
e44fc38818
Use unified assembler syntax (UAL) in assembly files. Divided syntax is considered deprecated. This will also allow to build the kernel using LLVM's integrated assembler. Signed-off-by: Stefan Agner <stefan@agner.ch> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
48 lines
1.3 KiB
ArmAsm
48 lines
1.3 KiB
ArmAsm
/*
|
|
* 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 <asm/assembler.h>
|
|
#include <asm/asm-offsets.h>
|
|
#include <asm/cache.h>
|
|
|
|
#define COPY_COUNT (PAGE_SZ / (2 * L1_CACHE_BYTES) 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, #L1_CACHE_BYTES] )
|
|
mov r2, #COPY_COUNT @ 1
|
|
ldmia r1!, {r3, r4, ip, lr} @ 4+1
|
|
1: PLD( pld [r1, #2 * L1_CACHE_BYTES])
|
|
PLD( pld [r1, #3 * L1_CACHE_BYTES])
|
|
2:
|
|
.rept (2 * L1_CACHE_BYTES / 16 - 1)
|
|
stmia r0!, {r3, r4, ip, lr} @ 4
|
|
ldmia r1!, {r3, r4, ip, lr} @ 4
|
|
.endr
|
|
subs r2, r2, #1 @ 1
|
|
stmia r0!, {r3, r4, ip, lr} @ 4
|
|
ldmiagt r1!, {r3, r4, ip, lr} @ 4
|
|
bgt 1b @ 1
|
|
PLD( ldmiaeq r1!, {r3, r4, ip, lr} )
|
|
PLD( beq 2b )
|
|
ldmfd sp!, {r4, pc} @ 3
|
|
ENDPROC(copy_page)
|