mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-23 02:05:57 +01:00
36 lines
708 B
ArmAsm
36 lines
708 B
ArmAsm
/* https://github.com/cirosantilli/linux-kernel-module-cheat#x86-cmovcc-instructions */
|
|
|
|
#include <lkmc.h>
|
|
|
|
LKMC_PROLOGUE
|
|
/* Carry flag clear. */
|
|
clc
|
|
mov $0, %rax
|
|
mov $1, %rbx
|
|
/* Don't move: carry flag not set. */
|
|
cmovc %rbx, %rax
|
|
LKMC_ASSERT_EQ(%rax, $0)
|
|
|
|
/* Carry flag clear. */
|
|
clc
|
|
mov $0, %rax
|
|
mov $1, %rbx
|
|
/* Move because checking NC. */
|
|
cmovnc %rbx, %rax
|
|
LKMC_ASSERT_EQ(%rax, $1)
|
|
|
|
/* Carry flag set. */
|
|
stc
|
|
mov $0, %rax
|
|
mov $1, %rbx
|
|
/* Move. */
|
|
cmovc %rbx, %rax
|
|
LKMC_ASSERT_EQ(%rax, $1)
|
|
|
|
#if 0
|
|
/* Immediates not supported:
|
|
* Error: operand type mismatch for `cmovc' */
|
|
cmovc $1, %rax
|
|
#endif
|
|
LKMC_EPILOGUE
|