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[/] [c0or1k/] [trunk/] [src/] [arch/] [arm/] [v5/] [atomic.S.ARM] - Blame information for rev 6

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/*
 * Copyright (C) 2010 B Labs
 *
 * Author: Bahadir Balban
 */
 
#include INC_ARCH(asm.h)
 
/*
 * Atomically and destructively reads a byte. E.g.
 * byte is read and zero is written back. This is
 * useful on reading irq counts
 *
 * @r0 = byte address
 */
BEGIN_PROC(l4_atomic_dest_readb)
        mov     r1, #0
        swpb    r2, r1, [r0]
        mov     r0, r2
        mov     pc, lr
END_PROC(l4_atomic_dest_readb)
 
 
 
 

Line No.	Rev	Author	Line
1	2	drasko	`/*`
2			`* Copyright (C) 2010 B Labs`
3			`*`
4			`* Author: Bahadir Balban`
5			`*/`
6
7			`#include INC_ARCH(asm.h)`
8
9			`/*`
10			`* Atomically and destructively reads a byte. E.g.`
11			`* byte is read and zero is written back. This is`
12			`* useful on reading irq counts`
13			`*`
14			`* @r0 = byte address`
15			`*/`
16			`BEGIN_PROC(l4_atomic_dest_readb)`
17			`mov r1, #0`
18			`swpb r2, r1, [r0]`
19			`mov r0, r2`
20			`mov pc, lr`
21			`END_PROC(l4_atomic_dest_readb)`
22
23
24
25

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[/] [c0or1k/] [trunk/] [src/] [arch/] [arm/] [v5/] [atomic.S.ARM] - Blame information for rev 6