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kern: swap tpidr_el1/cntv_cval_el0 as scratch vs exception stack

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This commit is contained in:
Michael Scire
2021-04-07 08:36:03 -07:00
committed by SciresM
parent 2f930c2d5f
commit c216f92a91
7 changed files with 34 additions and 28 deletions
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2
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_cpu.hpp
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@@ -232,7 +232,7 @@ namespace ams::kern::arch::arm64::cpu {
}
ALWAYS_INLINE void SetExceptionThreadStackTop(uintptr_t top) {
SetTpidrEl1(top);
cpu::SetCntvCvalEl0(top);
}
ALWAYS_INLINE void SwitchThreadLocalRegion(uintptr_t tlr) {

1
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_cpu_system_registers.hpp
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@@ -74,6 +74,7 @@ namespace ams::kern::arch::arm64::cpu {
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(CntkCtlEl1, cntkctl_el1)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(CntpCtlEl0, cntp_ctl_el0)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(CntpCvalEl0, cntp_cval_el0)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(CntvCvalEl0, cntv_cval_el0)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(Daif, daif)