package platform

// CpuFeatureFlags exposes methods for querying CPU capabilities
type CpuFeatureFlags interface {
	// Has returns true when the specified flag (represented as uint64) is supported
	Has(cpuFeature CpuFeature) bool
	// HasExtra returns true when the specified extraFlag (represented as uint64) is supported
	HasExtra(cpuFeature CpuFeature) bool
}

type CpuFeature uint64

const (
	// CpuFeatureAmd64SSE3 is the flag to query CpuFeatureFlags.Has for SSEv3 capabilities on amd64
	CpuFeatureAmd64SSE3 CpuFeature = 1
	// CpuFeatureAmd64SSE4_1 is the flag to query CpuFeatureFlags.Has for SSEv4.1 capabilities on amd64
	CpuFeatureAmd64SSE4_1 CpuFeature = 1 << 19
	// CpuFeatureAmd64SSE4_2 is the flag to query CpuFeatureFlags.Has for SSEv4.2 capabilities on amd64
	CpuFeatureAmd64SSE4_2 CpuFeature = 1 << 20
)

const (
	// CpuExtraFeatureAmd64ABM is the flag to query CpuFeatureFlags.HasExtra for Advanced Bit Manipulation capabilities (e.g. LZCNT) on amd64
	CpuExtraFeatureAmd64ABM CpuFeature = 1 << 5
)