Merge pull request #9697 from liamwhite/kcap

kernel: add KCapabilities

1 files changed, 20 insertions, 0 deletions

diff --git a/src/core/hardware_properties.h b/src/core/hardware_properties.h
index 13cbdb734..45567b840 100644
--- a/src/core/hardware_properties.h
+++ b/src/core/hardware_properties.h
@@ -25,6 +25,26 @@ constexpr std::array<s32, Common::BitSize<u64>()> VirtualToPhysicalCoreMap{
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3,
 };
 
+static constexpr inline size_t NumVirtualCores = Common::BitSize<u64>();
+
+static constexpr inline u64 VirtualCoreMask = [] {
+    u64 mask = 0;
+    for (size_t i = 0; i < NumVirtualCores; ++i) {
+        mask |= (UINT64_C(1) << i);
+    }
+    return mask;
+}();
+
+static constexpr inline u64 ConvertVirtualCoreMaskToPhysical(u64 v_core_mask) {
+    u64 p_core_mask = 0;
+    while (v_core_mask != 0) {
+        const u64 next = std::countr_zero(v_core_mask);
+        v_core_mask &= ~(static_cast<u64>(1) << next);
+        p_core_mask |= (static_cast<u64>(1) << VirtualToPhysicalCoreMap[next]);
+    }
+    return p_core_mask;
+}
+
 // Cortex-A57 supports 4 memory watchpoints
 constexpr u64 NUM_WATCHPOINTS = 4;