Files
linux-kernel-module-cheat/userland/arch/arm/tst.S
Ciro Santilli 六四事件 法轮功 72200dee4e userland: scope every header identifier with lkmc_
2019-05-21 00:00:01 +00:00

23 lines
437 B
ArmAsm

/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-data-processing-instructions
*
* Test. Same as ands, but don't store the result, just update flags.
*/
#include "common.h"
LKMC_ENTRY
/* 0x0F && 0xF0 == 0x00, so beq. */
mov r0, 0x0F
tst r0, 0xF0
LKMC_ASSERT(beq)
/* bne */
mov r0, 0xFF
tst r0, 0x0F
LKMC_ASSERT(bne)
# r0 was not modified.
LKMC_ASSERT_EQ(r0, 0xFF)
LKMC_EXIT