URL https://opencores.org/ocsvn/c0or1k/c0or1k/trunk

Subversion Repositories c0or1k

[/] [c0or1k/] [trunk/] [conts/] [libl4/] [src/] [arch/] [arm/] [v5/] [atomic.S.ARM] - Diff between revs 2 and 6

Rev 2	Rev 6
?rev1line?	?rev2line?
	`/*`
	`* Copyright (C) 2010 B Labs`
	`*`
	`* Author: Bahadir Balban`
	`*/`

	`#include`

	`/*`
	`* 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)`