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Kernel/SVC: Support special core values -2 and -3 in svcSetThreadCoreMask.
Also added some proper error handling.
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2 changed files with 28 additions and 1 deletions
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@ -21,7 +21,9 @@ enum {
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// Confirmed Switch OS error codes
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MisalignedAddress = 102,
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InvalidProcessorId = 113,
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InvalidHandle = 114,
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InvalidCombination = 116,
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Timeout = 117,
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SynchronizationCanceled = 118,
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TooLarge = 119,
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@ -732,7 +732,7 @@ static ResultCode GetThreadCoreMask(Handle thread_handle, u32* core, u64* mask)
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}
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static ResultCode SetThreadCoreMask(Handle thread_handle, u32 core, u64 mask) {
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NGLOG_TRACE(Kernel_SVC, "called, handle=0x{:08X}, mask=0x{:08X}, core=0x{:X}", thread_handle,
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NGLOG_DEBUG(Kernel_SVC, "called, handle=0x{:08X}, mask=0x{:16X}, core=0x{:X}", thread_handle,
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mask, core);
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const SharedPtr<Thread> thread = g_handle_table.Get<Thread>(thread_handle);
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@ -740,6 +740,31 @@ static ResultCode SetThreadCoreMask(Handle thread_handle, u32 core, u64 mask) {
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return ERR_INVALID_HANDLE;
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}
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if (core == THREADPROCESSORID_DEFAULT) {
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ASSERT(thread->owner_process->ideal_processor != THREADPROCESSORID_DEFAULT);
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// Set the target CPU to the one specified in the process' exheader.
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core = thread->owner_process->ideal_processor;
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mask = 1 << core;
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}
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if (mask == 0) {
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return ResultCode(ErrorModule::Kernel, ErrCodes::InvalidCombination);
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}
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/// This value is used to only change the affinity mask without changing the current ideal core.
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static constexpr u32 OnlyChangeMask = static_cast<u32>(-3);
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if (core == OnlyChangeMask) {
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core = thread->ideal_core;
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} else if (core >= Core::NUM_CPU_CORES && core != -1) {
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return ResultCode(ErrorModule::Kernel, ErrCodes::InvalidProcessorId);
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}
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// Error out if the input core isn't enabled in the input mask.
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if (core < Core::NUM_CPU_CORES && (mask & (1 << core)) == 0) {
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return ResultCode(ErrorModule::Kernel, ErrCodes::InvalidCombination);
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}
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thread->ChangeCore(core, mask);
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return RESULT_SUCCESS;
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