mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-23 02:05:57 +01:00
33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
/* Dump registers that cannot be read from EL0. */
|
|
|
|
#include <stdio.h>
|
|
#include <inttypes.h>
|
|
|
|
int main(void) {
|
|
uint32_t sctlr_el1;
|
|
__asm__ ("mrs %0, sctlr_el1" : "=r" (sctlr_el1) : :);
|
|
printf("SCTLR_EL1 0x%" PRIX32 "\n", sctlr_el1);
|
|
printf("SCTLR_EL1.A 0x%" PRIX32 "\n", (sctlr_el1 >> 1) & 1);
|
|
/* https://cirosantilli.com/linux-kernel-module-cheat#arm-paging */
|
|
printf("SCTLR_EL1.M 0x%" PRIX32 "\n", (sctlr_el1 >> 0) & 1);
|
|
|
|
uint64_t CurrentEL;
|
|
__asm__ ("mrs %0, CurrentEL;" : "=r" (CurrentEL) : :);
|
|
printf("CurrentEL 0x%" PRIX64 "\n", CurrentEL);
|
|
/* https://cirosantilli.com/linux-kernel-module-cheat#arm-exception-levels */
|
|
printf("CurrentEL.EL 0x%" PRIX64 "\n", CurrentEL >> 2);
|
|
|
|
/* https://cirosantilli.com/linux-kernel-module-cheat#arm-paging */
|
|
{
|
|
uint64_t tcr_el1;
|
|
__asm__ ("mrs %0, tcr_el1;" : "=r" (tcr_el1) : :);
|
|
printf("TCR_EL1 0x%" PRIX64 "\n", tcr_el1);
|
|
|
|
uint64_t ttbr0_el1;
|
|
__asm__ ("mrs %0, ttbr0_el1;" : "=r" (ttbr0_el1) : :);
|
|
printf("TTBR0_EL1 0x%" PRIX64 "\n", ttbr0_el1);
|
|
}
|
|
|
|
return 0;
|
|
}
|