summaryrefslogtreecommitdiff
path: root/src/arch/x86/acpi/globutil.asl
blob: e9bbcfee0c0d7e50b0c448272c14100a9110065a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
/* SPDX-License-Identifier: GPL-2.0-only */

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

/* string compare functions */
Method(MIN, 2)
{
	if (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(Local4 < Local7) {
		Store(Derefof(Local0[Local4]), Local2)
		Store(Derefof(Local1[Local4]), Local3)
		if (Local2 > Local3) {
			Return(One)
		} else {
			if (Local2 < Local3) {
				Return(Ones)
			}
		}
		Local4++
	}
	if (Local4 < Local5) {
		Return(One)
	} else {
		if (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 (SLEN(Arg0) < SLEN(Arg1)) {
		Return(0)
	}
	Store(Zero, Local2)
	Store(SLEN(Arg1), Local3)

	While(Local2 < Local3) {
		if (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 (ARG0 != 0) {
		Store(1, Local1)
		Local0 = Local1 << ARG0
	}
	Return(Local0)
}