mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 22:24:09 +08:00
d2912cb15b
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
104 lines
1.6 KiB
ArmAsm
104 lines
1.6 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* linux/arch/arm/lib/io-readsw-armv3.S
|
|
*
|
|
* Copyright (C) 1995-2000 Russell King
|
|
*/
|
|
#include <linux/linkage.h>
|
|
#include <asm/assembler.h>
|
|
|
|
.Linsw_bad_alignment:
|
|
adr r0, .Linsw_bad_align_msg
|
|
mov r2, lr
|
|
b panic
|
|
.Linsw_bad_align_msg:
|
|
.asciz "insw: bad buffer alignment (0x%p, lr=0x%08lX)\n"
|
|
.align
|
|
|
|
.Linsw_align: tst r1, #1
|
|
bne .Linsw_bad_alignment
|
|
|
|
ldr r3, [r0]
|
|
strb r3, [r1], #1
|
|
mov r3, r3, lsr #8
|
|
strb r3, [r1], #1
|
|
|
|
subs r2, r2, #1
|
|
reteq lr
|
|
|
|
ENTRY(__raw_readsw)
|
|
teq r2, #0 @ do we have to check for the zero len?
|
|
reteq lr
|
|
tst r1, #3
|
|
bne .Linsw_align
|
|
|
|
.Linsw_aligned: mov ip, #0xff
|
|
orr ip, ip, ip, lsl #8
|
|
stmfd sp!, {r4, r5, r6, lr}
|
|
|
|
subs r2, r2, #8
|
|
bmi .Lno_insw_8
|
|
|
|
.Linsw_8_lp: ldr r3, [r0]
|
|
and r3, r3, ip
|
|
ldr r4, [r0]
|
|
orr r3, r3, r4, lsl #16
|
|
|
|
ldr r4, [r0]
|
|
and r4, r4, ip
|
|
ldr r5, [r0]
|
|
orr r4, r4, r5, lsl #16
|
|
|
|
ldr r5, [r0]
|
|
and r5, r5, ip
|
|
ldr r6, [r0]
|
|
orr r5, r5, r6, lsl #16
|
|
|
|
ldr r6, [r0]
|
|
and r6, r6, ip
|
|
ldr lr, [r0]
|
|
orr r6, r6, lr, lsl #16
|
|
|
|
stmia r1!, {r3 - r6}
|
|
|
|
subs r2, r2, #8
|
|
bpl .Linsw_8_lp
|
|
|
|
tst r2, #7
|
|
ldmfdeq sp!, {r4, r5, r6, pc}
|
|
|
|
.Lno_insw_8: tst r2, #4
|
|
beq .Lno_insw_4
|
|
|
|
ldr r3, [r0]
|
|
and r3, r3, ip
|
|
ldr r4, [r0]
|
|
orr r3, r3, r4, lsl #16
|
|
|
|
ldr r4, [r0]
|
|
and r4, r4, ip
|
|
ldr r5, [r0]
|
|
orr r4, r4, r5, lsl #16
|
|
|
|
stmia r1!, {r3, r4}
|
|
|
|
.Lno_insw_4: tst r2, #2
|
|
beq .Lno_insw_2
|
|
|
|
ldr r3, [r0]
|
|
and r3, r3, ip
|
|
ldr r4, [r0]
|
|
orr r3, r3, r4, lsl #16
|
|
|
|
str r3, [r1], #4
|
|
|
|
.Lno_insw_2: tst r2, #1
|
|
ldrne r3, [r0]
|
|
strbne r3, [r1], #1
|
|
movne r3, r3, lsr #8
|
|
strbne r3, [r1]
|
|
|
|
ldmfd sp!, {r4, r5, r6, pc}
|
|
|
|
|