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kernel/process_capability: Handle the priority mask and core mask flags
Handles the priority mask and core mask flags to allow building up the masks to determine the usable thread priorities and cores for a kernel process instance.
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parent
6ff5135521
commit
27caf71204
2 changed files with 40 additions and 1 deletions
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@ -205,7 +205,36 @@ void ProcessCapabilities::Clear() {
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}
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}
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ResultCode ProcessCapabilities::HandlePriorityCoreNumFlags(u32 flags) {
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ResultCode ProcessCapabilities::HandlePriorityCoreNumFlags(u32 flags) {
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// TODO: Implement
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if (priority_mask != 0 || core_mask != 0) {
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return ERR_INVALID_CAPABILITY_DESCRIPTOR;
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}
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const u32 core_num_min = (flags >> 16) & 0xFF;
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const u32 core_num_max = (flags >> 24) & 0xFF;
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if (core_num_min > core_num_max) {
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return ERR_INVALID_COMBINATION;
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}
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const u32 priority_min = (flags >> 10) & 0x3F;
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const u32 priority_max = (flags >> 4) & 0x3F;
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if (priority_min > priority_max) {
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return ERR_INVALID_COMBINATION;
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}
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// The switch only has 4 usable cores.
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if (core_num_max >= 4) {
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return ERR_INVALID_PROCESSOR_ID;
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}
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const auto make_mask = [](u64 min, u64 max) {
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const u64 range = max - min + 1;
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const u64 mask = (1ULL << range) - 1;
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return mask << min;
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};
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core_mask = make_mask(core_num_min, core_num_max);
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priority_mask = make_mask(priority_min, priority_max);
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return RESULT_SUCCESS;
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return RESULT_SUCCESS;
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}
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}
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@ -122,6 +122,16 @@ public:
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///
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///
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void InitializeForMetadatalessProcess();
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void InitializeForMetadatalessProcess();
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/// Gets the allowable core mask
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u64 GetCoreMask() const {
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return core_mask;
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}
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/// Gets the allowable priority mask
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u64 GetPriorityMask() const {
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return priority_mask;
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}
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private:
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private:
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/// Attempts to parse a given sequence of capability descriptors.
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/// Attempts to parse a given sequence of capability descriptors.
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///
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///
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