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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-04-17 10:51:02 -0400
committerRussell King <rmk@dyn-67.arm.linux.org.uk>2005-04-17 10:51:02 -0400
commit684f970e2fd2dc0eb8292500903f54f1ebda0e75 (patch)
treed8736596d79bf95281449f7fe5f72db111eb5a73 /arch/arm/lib/testchangebit.S
parent652a12ef98d16ccd1ee5cdf2c832ce5411ed3262 (diff)
[PATCH] ARM: bitops
Convert ARM bitop assembly to a macro. All bitops follow the same format, so it's silly duplicating the code when only one or two instructions are different. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/lib/testchangebit.S')
-rw-r--r--arch/arm/lib/testchangebit.S15
1 files changed, 2 insertions, 13 deletions
diff --git a/arch/arm/lib/testchangebit.S b/arch/arm/lib/testchangebit.S
index 4aba4676b984..b25dcd2be53e 100644
--- a/arch/arm/lib/testchangebit.S
+++ b/arch/arm/lib/testchangebit.S
@@ -9,21 +9,10 @@
9 */ 9 */
10#include <linux/linkage.h> 10#include <linux/linkage.h>
11#include <asm/assembler.h> 11#include <asm/assembler.h>
12#include "bitops.h"
12 .text 13 .text
13 14
14ENTRY(_test_and_change_bit_be) 15ENTRY(_test_and_change_bit_be)
15 eor r0, r0, #0x18 @ big endian byte ordering 16 eor r0, r0, #0x18 @ big endian byte ordering
16ENTRY(_test_and_change_bit_le) 17ENTRY(_test_and_change_bit_le)
17 add r1, r1, r0, lsr #3 18 testop eor, strb
18 and r3, r0, #7
19 mov r0, #1
20 save_and_disable_irqs ip, r2
21 ldrb r2, [r1]
22 tst r2, r0, lsl r3
23 eor r2, r2, r0, lsl r3
24 strb r2, [r1]
25 restore_irqs ip
26 moveq r0, #0
27 RETINSTR(mov,pc,lr)
28
29