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arm asm el: document virtualization failure after FP enable patch

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Ciro Santilli 六四事件 法轮功
2019-05-27 00:00:04 +00:00
parent 6e790042f0
commit 24b75f92d8
2 changed files with 29 additions and 4 deletions
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17
baremetal/arch/arm/dump_regs.c
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@@ -8,10 +8,19 @@ int main(void) {
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-exception-levels */
printf("CPSR.M 0x%" PRIX32 "\n", cpsr & 0xF);
/* TODO this is blowing up an exception, how to I read from it? */
/*uint32_t mvfr1;*/
/*__asm__ ("vmrs %0, mvfr1" : "=r" (mvfr1) : :);*/
/*printf("MVFR1 0x%" PRIX32 "\n", mvfr1);*/
#if 0
/* TODO blows up exception in EL, but works with -machine secure=on. */
uint32_t nsacr;
__asm__ ("mrc p15, 0, %0, c1, c1, 2" : "=r" (nsacr) : :);
printf("NSACR 0x%" PRIX32 "\n", nsacr);
#endif
#if 0
/* TODO blows up exception. */
uint32_t mvfr1;
__asm__ ("vmrs %0, mvfr1" : "=r" (mvfr1) : :);
printf("MVFR1 0x%" PRIX32 "\n", mvfr1);
#endif
return 0;
}