mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 22:24:09 +08:00
1da177e4c3
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!
57 lines
999 B
ArmAsm
57 lines
999 B
ArmAsm
/*
|
|
* linux/arch/arm26/lib/io-writesl.S
|
|
*
|
|
* Copyright (C) 1995-2000 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.
|
|
*/
|
|
#include <linux/linkage.h>
|
|
#include <asm/assembler.h>
|
|
#include <asm/hardware.h>
|
|
|
|
ENTRY(__raw_writesl)
|
|
teq r2, #0 @ do we have to check for the zero len?
|
|
moveq pc, lr
|
|
ands ip, r1, #3
|
|
bne 2f
|
|
|
|
1: ldr r3, [r1], #4
|
|
str r3, [r0]
|
|
subs r2, r2, #1
|
|
bne 1b
|
|
mov pc, lr
|
|
|
|
2: bic r1, r1, #3
|
|
cmp ip, #2
|
|
ldr r3, [r1], #4
|
|
bgt 4f
|
|
blt 5f
|
|
|
|
3: mov ip, r3, lsr #16
|
|
ldr r3, [r1], #4
|
|
orr ip, ip, r3, lsl #16
|
|
str ip, [r0]
|
|
subs r2, r2, #1
|
|
bne 3b
|
|
mov pc, lr
|
|
|
|
4: mov ip, r3, lsr #24
|
|
ldr r3, [r1], #4
|
|
orr ip, ip, r3, lsl #8
|
|
str ip, [r0]
|
|
subs r2, r2, #1
|
|
bne 4b
|
|
mov pc, lr
|
|
|
|
5: mov ip, r3, lsr #8
|
|
ldr r3, [r1], #4
|
|
orr ip, ip, r3, lsl #24
|
|
str ip, [r0]
|
|
subs r2, r2, #1
|
|
bne 5b
|
|
mov pc, lr
|
|
|
|
|