mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-13 20:12:26 +00:00
32 lines
545 B
ArmAsm
32 lines
545 B
ArmAsm
/* https://cirosantilli.com/linux-kernel-module-cheat#arm-ldmia-instruction */
|
|
|
|
#include <lkmc.h>
|
|
|
|
LKMC_PROLOGUE
|
|
|
|
/* Save sp before push. */
|
|
mov r4, sp
|
|
|
|
/* Push. */
|
|
mov r5, 1
|
|
mov r6, 2
|
|
push {r5, r6}
|
|
|
|
/* Save sp after push. */
|
|
mov r5, sp
|
|
|
|
/* Restore. */
|
|
mov r7, 0
|
|
mov r8, 0
|
|
pop {r7, r8}
|
|
LKMC_ASSERT_EQ(r7, =1)
|
|
LKMC_ASSERT_EQ(r8, =2)
|
|
|
|
/* Check that stack pointer moved down by 8 bytes
|
|
* (2 registers x 4 bytes each).
|
|
*/
|
|
sub r4, r5
|
|
LKMC_ASSERT_EQ(r4, =8)
|
|
|
|
LKMC_EPILOGUE
|