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kern: implement new thread context/fpu semantics

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Michael Scire 2022-03-22 19:59:39 -07:00 • committed by SciresM
parent 79afa3b64c
commit 6e17317d5d
21 changed files with 1291 additions and 668 deletions
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12
libraries/libmesosphere/source/arch/arm64/kern_exception_handlers.cpp
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@ -214,16 +214,16 @@ namespace ams::kern::arch::arm64 {
context->psr = 0x10;
}
/* Set exception SVC permissions. */
cur_process.CopyEnterExceptionSvcPermissionsTo(GetCurrentThread().GetStackParametersForExceptionSvcPermission());
/* Process that we're entering a usermode exception on the current thread. */
GetCurrentThread().OnEnterUsermodeException();
return;
}
}
/* If we should, clear the thread's state as single-step. */
#if defined(MESOSPHERE_ENABLE_HARDWARE_SINGLE_STEP)
if (AMS_UNLIKELY(GetCurrentThread().IsSingleStep())) {
GetCurrentThread().ClearSingleStep();
if (AMS_UNLIKELY(GetCurrentThread().IsHardwareSingleStep())) {
GetCurrentThread().ClearHardwareSingleStep();
cpu::MonitorDebugSystemControlRegisterAccessor().SetSoftwareStep(false).Store();
cpu::InstructionMemoryBarrier();
}
@ -388,8 +388,8 @@ namespace ams::kern::arch::arm64 {
/* Try to leave the user exception. */
if (cur_process.LeaveUserException()) {
/* We left user exception. Alter our SVC permissions accordingly. */
cur_process.CopyLeaveExceptionSvcPermissionsTo(cur_thread->GetStackParametersForExceptionSvcPermission());
/* Process that we're leaving a usermode exception on the current thread. */
GetCurrentThread().OnLeaveUsermodeException();
/* Copy the user context to the thread context. */
if (is_aarch64) {