/* SPDX-License-Identifier: GPL-2.0-only */

/*
Scope(\_SB) {
	#include "globutil.asl"
}
*/

/* string compare functions */
Method(MIN, 2)
{
	if (LLess(Arg0, Arg1)) {
		Return(Arg0)
	} else {
		Return(Arg1)
	}
}

Method(SLEN, 1)
{
	Store(Arg0, Local0)
	Return(Sizeof(Local0))
}

Method(S2BF, 1, Serialized)
{
	Local0 = SLEN(Arg0) + 1
	Name(BUFF, Buffer(Local0) {})
	Store(Arg0, BUFF)
	Return(BUFF)
}

/* Strong string compare.  Checks both length and content */
Method(SCMP, 2)
{
	Store(S2BF(Arg0), Local0)
	Store(S2BF(Arg1), Local1)
	Store(Zero, Local4)
	Store(SLEN(Arg0), Local5)
	Store(SLEN(Arg1), Local6)
	Store(MIN(Local5, Local6), Local7)

	While(LLess(Local4, Local7)) {
		Store(Derefof(Local0[Local4]), Local2)
		Store(Derefof(Local1[Local4]), Local3)
		if (Local2 > Local3) {
			Return(One)
		} else {
			if (LLess(Local2, Local3)) {
				Return(Ones)
			}
		}
		Local4++
	}
	if (LLess(Local4, Local5)) {
		Return(One)
	} else {
		if (LLess(Local4, Local6)) {
			Return(Ones)
		} else {
			Return(Zero)
		}
	}
}

/* Weak string compare.  Checks to find Arg1 at beginning of Arg0.
* Fails if length(Arg0) < length(Arg1).  Returns 0 on Fail, 1 on
* Pass.
*/
Method(WCMP, 2)
{
	Store(S2BF(Arg0), Local0)
	Store(S2BF(Arg1), Local1)
	if (LLess(SLEN(Arg0), SLEN(Arg1))) {
		Return(0)
	}
	Store(Zero, Local2)
	Store(SLEN(Arg1), Local3)

	While(LLess(Local2, Local3)) {
		if (LNotEqual(Derefof(Local0[Local2]),
			Derefof(Local1[Local2]))) {
			Return(0)
		}
		Local2++
	}
	Return(One)
}

/* ARG0 = IRQ Number(0-15)
* Returns Bit Map
*/
Method(I2BM, 1)
{
	Store(0, Local0)
	if (LNotEqual(ARG0, 0)) {
		Store(1, Local1)
		ShiftLeft(Local1, ARG0, Local0)
	}
	Return(Local0)
}