Implemented bit shifting on arm64

src/arm/Shift.go

@@ -0,0 +1,15 @@
+package arm
+
+import (
+	"git.urbach.dev/cli/q/src/cpu"
+)
+
+// ShiftLeftNumber shifts the register value a specified amount of bits to the left.
+func ShiftLeftNumber(destination cpu.Register, source cpu.Register, bits int) uint32 {
+	return 0b110100110<<23 | reg2BitmaskImm(destination, source, 1, 64-bits, (^bits)&mask6)
+}
+
+// ShiftRightSignedNumber shifts the signed register value a specified amount of bits to the right.
+func ShiftRightSignedNumber(destination cpu.Register, source cpu.Register, bits int) uint32 {
+	return 0b100100110<<23 | reg2BitmaskImm(destination, source, 1, bits&mask6, 0b111111)
+}