diff options
Diffstat (limited to 'src/core/hle/kernel/k_thread.cpp')
-rw-r--r-- | src/core/hle/kernel/k_thread.cpp | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/src/core/hle/kernel/k_thread.cpp b/src/core/hle/kernel/k_thread.cpp index 8c403f5fd..15ae652f9 100644 --- a/src/core/hle/kernel/k_thread.cpp +++ b/src/core/hle/kernel/k_thread.cpp @@ -49,6 +49,7 @@ static void ResetThreadContext32(Core::ARM_Interface::ThreadContext32& context, context.cpu_registers[0] = arg; context.cpu_registers[15] = entry_point; context.cpu_registers[13] = stack_top; + context.fpscr = 0; } static void ResetThreadContext64(Core::ARM_Interface::ThreadContext64& context, VAddr stack_top, @@ -58,8 +59,8 @@ static void ResetThreadContext64(Core::ARM_Interface::ThreadContext64& context, context.cpu_registers[18] = Kernel::KSystemControl::GenerateRandomU64() | 1; context.pc = entry_point; context.sp = stack_top; - // TODO(merry): Perform a hardware test to determine the below value. context.fpcr = 0; + context.fpsr = 0; } } // namespace @@ -815,6 +816,27 @@ void KThread::Continue() { KScheduler::OnThreadStateChanged(kernel, this, old_state); } +void KThread::CloneFpuStatus() { + // We shouldn't reach here when starting kernel threads. + ASSERT(this->GetOwnerProcess() != nullptr); + ASSERT(this->GetOwnerProcess() == GetCurrentProcessPointer(kernel)); + + if (this->GetOwnerProcess()->Is64BitProcess()) { + // Clone FPSR and FPCR. + ThreadContext64 cur_ctx{}; + kernel.System().CurrentArmInterface().SaveContext(cur_ctx); + + this->GetContext64().fpcr = cur_ctx.fpcr; + this->GetContext64().fpsr = cur_ctx.fpsr; + } else { + // Clone FPSCR. + ThreadContext32 cur_ctx{}; + kernel.System().CurrentArmInterface().SaveContext(cur_ctx); + + this->GetContext32().fpscr = cur_ctx.fpscr; + } +} + Result KThread::SetActivity(Svc::ThreadActivity activity) { // Lock ourselves. KScopedLightLock lk(activity_pause_lock); |