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kern: print backtrace on panic

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This commit is contained in:
Michael Scire
2020-02-07 06:26:01 -08:00
parent cb6af379d8
commit 8cfffc69d5
7 changed files with 106 additions and 14 deletions
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45
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_cpu.hpp
View File

@@ -59,6 +59,51 @@ namespace ams::kern::arm64::cpu {
EnsureInstructionConsistency();
}
/* Helper for address access. */
ALWAYS_INLINE bool GetPhysicalAddressWritable(KPhysicalAddress *out, KVirtualAddress addr, bool privileged = false) {
const uintptr_t va = GetInteger(addr);
if (privileged) {
__asm__ __volatile__("at s1e1w, %[va]" :: [va]"r"(va) : "memory");
} else {
__asm__ __volatile__("at s1e0w, %[va]" :: [va]"r"(va) : "memory");
}
InstructionMemoryBarrier();
u64 par = GetParEl1();
if (par & 0x1) {
return false;
}
if (out) {
*out = KPhysicalAddress((par & 0xFFFFFFFFF000ull) | (va & 0xFFFull));
}
return true;
}
ALWAYS_INLINE bool GetPhysicalAddressReadable(KPhysicalAddress *out, KVirtualAddress addr, bool privileged = false) {
const uintptr_t va = GetInteger(addr);
if (privileged) {
__asm__ __volatile__("at s1e1r, %[va]" :: [va]"r"(va) : "memory");
} else {
__asm__ __volatile__("at s1e0r, %[va]" :: [va]"r"(va) : "memory");
}
InstructionMemoryBarrier();
u64 par = GetParEl1();
if (par & 0x1) {
return false;
}
if (out) {
*out = KPhysicalAddress((par & 0xFFFFFFFFF000ull) | (va & 0xFFFull));
}
return true;
}
/* Synchronization helpers. */
NOINLINE void SynchronizeAllCores();

2
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_cpu_system_registers.hpp
View File

@@ -43,6 +43,8 @@ namespace ams::kern::arm64::cpu {
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(VbarEl1, vbar_el1)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(ParEl1, par_el1)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(SctlrEl1, sctlr_el1)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(CpuActlrEl1, s3_1_c15_c2_0)