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factor out baremetal aarch64 dump_regs.c for kernel module usage

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Create dump-regs section.
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Ciro Santilli 六四事件 法轮功
2019-12-12 00:00:04 +00:00
parent 6f9fbfdcd8
commit cf4ed0f11d
5 changed files with 126 additions and 37 deletions
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39
baremetal/arch/aarch64/dump_regs.c
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@@ -1,42 +1,11 @@
/* Dump registers that cannot be read from EL0. */
/* https://cirosantilli.com/linux-kernel-module-cheat#dump-regs */
#include <stdio.h>
#include <inttypes.h>
#include <lkmc/aarch64_dump_regs.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 id_aa64pfr0_el1;
__asm__ ("mrs %0, id_aa64pfr0_el1" : "=r" (id_aa64pfr0_el1) : :);
printf("ID_AA64PFR0_EL1 0x%" PRIX64 "\n", id_aa64pfr0_el1);
printf("ID_AA64PFR0_EL1.SVE 0x%" PRIX64 "\n", (id_aa64pfr0_el1 >> 32) & 0xF);
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);
printf("TCR_EL1.A1 0x%" PRIX64 "\n", (tcr_el1 >> 22) & 1);
uint64_t ttbr0_el1;
__asm__ ("mrs %0, ttbr0_el1;" : "=r" (ttbr0_el1) : :);
printf("TTBR0_EL1 0x%" PRIX64 "\n", ttbr0_el1);
uint64_t ttbr1_el1;
__asm__ ("mrs %0, ttbr1_el1;" : "=r" (ttbr1_el1) : :);
printf("TTBR1_EL1 0x%" PRIX64 "\n", ttbr1_el1);
}
LKMC_DUMP_SYSTEM_REGS;
return 0;
}

2
baremetal/arch/arm/dump_regs.c
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@@ -1,4 +1,4 @@
/* Dump registers that cannot be read from EL0. */
/* https://cirosantilli.com/linux-kernel-module-cheat#dump-regs */
#include <stdio.h>
#include <inttypes.h>