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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* shim - trivial UEFI first-stage bootloader
*
* Copyright 2013 Red Hat, Inc <pjones@redhat.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Significant portions of this code are derived from Tianocore
* (http://tianocore.sf.net) and are Copyright 2009-2012 Intel
* Corporation.
*/
#ifndef SHIM_UCS2_H
#define SHIM_UCS2_H
#include <stdbool.h>
static inline INTN
__attribute__((unused))
StrCaseCmp(CHAR16 *s0, CHAR16 *s1)
{
CHAR16 c0, c1;
while (1) {
if (*s0 == L'\0' || *s1 == L'\0')
return *s1 - *s0;
c0 = (*s0 >= L'a' && *s0 <= L'z') ? *s0 - 32 : *s0;
c1 = (*s1 >= L'a' && *s1 <= L'z') ? *s1 - 32 : *s1;
if (c0 != c1)
return c1 - c0;
s0++;
s1++;
}
return 0;
}
static inline INTN
__attribute__((unused))
StrnCaseCmp(CHAR16 *s0, CHAR16 *s1, int n)
{
CHAR16 c0, c1;
int x = 0;
while (n > x++) {
if (*s0 == L'\0' || *s1 == L'\0')
return *s1 - *s0;
c0 = (*s0 >= L'a' && *s0 <= L'z') ? *s0 - 32 : *s0;
c1 = (*s1 >= L'a' && *s1 <= L'z') ? *s1 - 32 : *s1;
if (c0 != c1)
return c1 - c0;
s0++;
s1++;
}
return 0;
}
static inline UINTN
__attribute__((unused))
StrCSpn(const CHAR16 *s, const CHAR16 *reject)
{
UINTN ret;
for (ret = 0; s[ret] != L'\0'; ret++) {
int i;
for (i = 0; reject[i] != L'\0'; i++) {
if (reject[i] == s[ret])
return ret;
}
}
return ret;
}
/*
* Test if an entire buffer is nothing but NUL characters. This
* implementation "gracefully" ignores the difference between the
* UTF-8/ASCII 1-byte NUL and the UCS-2 2-byte NUL.
*/
static inline bool
__attribute__((__unused__))
is_all_nuls(UINT8 *data, UINTN data_size)
{
UINTN i;
for (i = 0; i < data_size; i++) {
if (data[i] != 0)
return false;
}
return true;
}
static inline UINTN
__attribute__((__unused__))
count_ucs2_strings(UINT8 *data, UINTN data_size)
{
UINTN pos = 0;
UINTN last_nul_pos = 0;
UINTN num_nuls = 0;
UINTN i;
if (data_size % 2 != 0)
return 0;
for (i = pos; i < data_size; i++) {
if (i % 2 != 0) {
if (data[i] != 0)
return 0;
} else if (data[i] == 0) {
last_nul_pos = i;
num_nuls++;
}
pos = i;
}
if (num_nuls > 0 && last_nul_pos != pos - 1)
return 0;
return num_nuls;
}
#endif /* SHIM_UCS2_H */
|
