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This commit is contained in:
Eduard Urbach 2024-08-25 20:38:22 +02:00
parent 12dcf672cb
commit a4dc5a4eff
Signed by: eduard
GPG key ID: 49226B848C78F6C8
89 changed files with 42 additions and 42 deletions
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19
src/x64/SIB.go Normal file
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package x64
// ScaleFactor encodes the scale factor.
type ScaleFactor = byte
const (
Scale1 = ScaleFactor(0b00)
Scale2 = ScaleFactor(0b01)
Scale4 = ScaleFactor(0b10)
Scale8 = ScaleFactor(0b11)
)
// SIB is used to generate an SIB byte.
// - scale: 2 bits. Multiplies the value of the index.
// - index: 3 bits. Specifies the index register.
// - base: 3 bits. Specifies the base register.
func SIB(scale ScaleFactor, index byte, base byte) byte {
return (scale << 6) | (index << 3) | base
}