mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
dc7a12bdfc
Converts ARM the text files to ReST, preparing them to be an architecture book. The conversion is actually: - add blank lines and identation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Reviewed-by Corentin Labbe <clabbe.montjoie@gmail.com> # For sun4i-ss
65 lines
1.8 KiB
ArmAsm
65 lines
1.8 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* AArch32 user helpers.
|
|
* Based on the kuser helpers in arch/arm/kernel/entry-armv.S.
|
|
*
|
|
* Copyright (C) 2005-2011 Nicolas Pitre <nico@fluxnic.net>
|
|
* Copyright (C) 2012-2018 ARM Ltd.
|
|
*
|
|
* The kuser helpers below are mapped at a fixed address by
|
|
* aarch32_setup_additional_pages() and are provided for compatibility
|
|
* reasons with 32 bit (aarch32) applications that need them.
|
|
*
|
|
* See Documentation/arm/kernel_user_helpers.rst for formal definitions.
|
|
*/
|
|
|
|
#include <asm/unistd.h>
|
|
|
|
.align 5
|
|
.globl __kuser_helper_start
|
|
__kuser_helper_start:
|
|
|
|
__kuser_cmpxchg64: // 0xffff0f60
|
|
.inst 0xe92d00f0 // push {r4, r5, r6, r7}
|
|
.inst 0xe1c040d0 // ldrd r4, r5, [r0]
|
|
.inst 0xe1c160d0 // ldrd r6, r7, [r1]
|
|
.inst 0xe1b20f9f // 1: ldrexd r0, r1, [r2]
|
|
.inst 0xe0303004 // eors r3, r0, r4
|
|
.inst 0x00313005 // eoreqs r3, r1, r5
|
|
.inst 0x01a23e96 // stlexdeq r3, r6, [r2]
|
|
.inst 0x03330001 // teqeq r3, #1
|
|
.inst 0x0afffff9 // beq 1b
|
|
.inst 0xf57ff05b // dmb ish
|
|
.inst 0xe2730000 // rsbs r0, r3, #0
|
|
.inst 0xe8bd00f0 // pop {r4, r5, r6, r7}
|
|
.inst 0xe12fff1e // bx lr
|
|
|
|
.align 5
|
|
__kuser_memory_barrier: // 0xffff0fa0
|
|
.inst 0xf57ff05b // dmb ish
|
|
.inst 0xe12fff1e // bx lr
|
|
|
|
.align 5
|
|
__kuser_cmpxchg: // 0xffff0fc0
|
|
.inst 0xe1923f9f // 1: ldrex r3, [r2]
|
|
.inst 0xe0533000 // subs r3, r3, r0
|
|
.inst 0x01823e91 // stlexeq r3, r1, [r2]
|
|
.inst 0x03330001 // teqeq r3, #1
|
|
.inst 0x0afffffa // beq 1b
|
|
.inst 0xf57ff05b // dmb ish
|
|
.inst 0xe2730000 // rsbs r0, r3, #0
|
|
.inst 0xe12fff1e // bx lr
|
|
|
|
.align 5
|
|
__kuser_get_tls: // 0xffff0fe0
|
|
.inst 0xee1d0f70 // mrc p15, 0, r0, c13, c0, 3
|
|
.inst 0xe12fff1e // bx lr
|
|
.rep 5
|
|
.word 0
|
|
.endr
|
|
|
|
__kuser_helper_version: // 0xffff0ffc
|
|
.word ((__kuser_helper_end - __kuser_helper_start) >> 5)
|
|
.globl __kuser_helper_end
|
|
__kuser_helper_end:
|