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https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-23 02:05:57 +01:00
22 lines
735 B
C
22 lines
735 B
C
/* Dump non-EL0 readable registers. We need a separate program from EL0
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* because we cannot determine the current EL from EL0, since CurrentEL
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* cannot be read from it.
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*/
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#include <stdio.h>
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#include <inttypes.h>
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int main(void) {
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uint32_t sctlr_el1;
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__asm__ ("mrs %0, sctlr_el1" : "=r" (sctlr_el1) : :);
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printf("SCTLR_EL1 0x%" PRIX32 "\n", sctlr_el1);
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printf("SCTLR_EL1.A 0x%" PRIX32 "\n", (sctlr_el1 >> 1) & 1);
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uint64_t CurrentEL;
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__asm__ ("mrs %0, CurrentEL;" : "=r" (CurrentEL) : :);
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printf("CurrentEL 0x%" PRIX64 "\n", CurrentEL);
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/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-exception-levels */
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printf("CurrentEL.EL 0x%" PRIX64 "\n", CurrentEL >> 2);
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return 0;
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}
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