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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
* Copyright (C) 2016 Bin Meng <bmeng.cn@gmail.com>
*
* Modified from coreboot src/arch/x86/acpi/globutil.asl
*/
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)
{
Add(SLEN(Arg0), One, Local0)
Name(BUFF, Buffer(Local0) {})
Store(Arg0, BUFF)
Return (BUFF)
}
/*
* SCMP - 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(Index(Local0, Local4)), Local2)
Store(Derefof(Index(Local1, Local4)), Local3)
If (LGreater(Local2, Local3)) {
Return (One)
} Else {
If (LLess(Local2, Local3)) {
Return (Ones)
}
}
Increment(Local4)
}
If (LLess(Local4, Local5)) {
Return (One)
} Else {
If (LLess(Local4, Local6)) {
Return (Ones)
} Else {
Return (Zero)
}
}
}
/*
* WCMP - 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 (Zero)
}
Store(Zero, Local2)
Store(SLEN(Arg1), Local3)
While (LLess(Local2, Local3)) {
If (LNotEqual(Derefof(Index(Local0, Local2)),
Derefof(Index(Local1, Local2)))) {
Return (Zero)
}
Increment(Local2)
}
Return (One)
}
/*
* I2BM - Returns Bit Map
*
* Arg0 = IRQ Number (0-15)
*/
Method(I2BM, 1)
{
Store(0, Local0)
If (LNotEqual(Arg0, 0)) {
Store(1, Local1)
ShiftLeft(Local1, Arg0, Local0)
}
Return (Local0)
}
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