mirror of
https://github.com/brain-hackers/linux-brain.git
synced 2024-06-09 15:26:21 +09:00
d94589900d
commit 3ac0f4526dfb80625f5c2365bccd85be68db93ef upstream. In an effort to clarify and simplify the annotation of assembly functions in the kernel new macros have been introduced. These replace ENTRY and ENDPROC and also add a new annotation for static functions which previously had no ENTRY equivalent. Update the annotations in the library code to the new macros. Signed-off-by: Mark Brown <broonie@kernel.org> [will: Use SYM_FUNC_START_WEAK_PI] Signed-off-by: Will Deacon <will@kernel.org> Cc: Jian Cai <jiancai@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
71 lines
1.4 KiB
ArmAsm
71 lines
1.4 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copy from user space to user space
|
|
*
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
|
|
#include <asm/asm-uaccess.h>
|
|
#include <asm/assembler.h>
|
|
#include <asm/cache.h>
|
|
|
|
/*
|
|
* Copy from user space to user space (alignment handled by the hardware)
|
|
*
|
|
* Parameters:
|
|
* x0 - to
|
|
* x1 - from
|
|
* x2 - n
|
|
* Returns:
|
|
* x0 - bytes not copied
|
|
*/
|
|
.macro ldrb1 ptr, regB, val
|
|
uao_user_alternative 9998f, ldrb, ldtrb, \ptr, \regB, \val
|
|
.endm
|
|
|
|
.macro strb1 ptr, regB, val
|
|
uao_user_alternative 9998f, strb, sttrb, \ptr, \regB, \val
|
|
.endm
|
|
|
|
.macro ldrh1 ptr, regB, val
|
|
uao_user_alternative 9998f, ldrh, ldtrh, \ptr, \regB, \val
|
|
.endm
|
|
|
|
.macro strh1 ptr, regB, val
|
|
uao_user_alternative 9998f, strh, sttrh, \ptr, \regB, \val
|
|
.endm
|
|
|
|
.macro ldr1 ptr, regB, val
|
|
uao_user_alternative 9998f, ldr, ldtr, \ptr, \regB, \val
|
|
.endm
|
|
|
|
.macro str1 ptr, regB, val
|
|
uao_user_alternative 9998f, str, sttr, \ptr, \regB, \val
|
|
.endm
|
|
|
|
.macro ldp1 ptr, regB, regC, val
|
|
uao_ldp 9998f, \ptr, \regB, \regC, \val
|
|
.endm
|
|
|
|
.macro stp1 ptr, regB, regC, val
|
|
uao_stp 9998f, \ptr, \regB, \regC, \val
|
|
.endm
|
|
|
|
end .req x5
|
|
|
|
SYM_FUNC_START(__arch_copy_in_user)
|
|
add end, x0, x2
|
|
#include "copy_template.S"
|
|
mov x0, #0
|
|
ret
|
|
SYM_FUNC_END(__arch_copy_in_user)
|
|
EXPORT_SYMBOL(__arch_copy_in_user)
|
|
|
|
.section .fixup,"ax"
|
|
.align 2
|
|
9998: sub x0, end, dst // bytes not copied
|
|
ret
|
|
.previous
|