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kernel: add KCapabilities

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Liam 2023-01-28 19:38:00 -05:00
parent 159aab9a97
commit 67a8740af6
6 changed files with 738 additions and 0 deletions
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20
src/core/hardware_properties.h
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@ -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;