mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-26 11:41:35 +01:00
18 lines
305 B
ArmAsm
18 lines
305 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#data-bitwise-instructions */
|
|
|
|
#include "common.h"
|
|
|
|
ENTRY
|
|
ldr r0, =0x7FFFFFFF
|
|
clz r1, r0
|
|
ASSERT_EQ(r1, 1)
|
|
|
|
ldr r0, =0x3FFFFFFF
|
|
clz r1, r0
|
|
ASSERT_EQ(r1, 2)
|
|
|
|
ldr r0, =0x1FFFFFFF
|
|
clz r1, r0
|
|
ASSERT_EQ(r1, 3)
|
|
EXIT
|