Files
linux-kernel-module-cheat/userland/arch/arm/tst.S
2019-05-12 00:00:08 +00:00

23 lines
412 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"
ENTRY
/* 0x0F && 0xF0 == 0x00, so beq. */
mov r0, 0x0F
tst r0, 0xF0
ASSERT(beq)
/* bne */
mov r0, 0xFF
tst r0, 0x0F
ASSERT(bne)
# r0 was not modified.
ASSERT_EQ(r0, 0xFF)
EXIT