/*
|
* 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
|
*
|
* SPDX-License-Identifier: GPL-2.0+
|
*/
|
|
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)
|
}
|
