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
140
141
142
143
144
145
146
|
// Copyright 2024-2025, Amlal El Mahrouss (amlal@nekernel.org)
// Licensed under the Apache License, Version 2.0 (see LICENSE file)
// Official repository: https://github.com/ne-foss-org/nekernel
#ifndef BOOTKIT_SUPPORT_H
#define BOOTKIT_SUPPORT_H
/// @file Support.h
/// @brief Purpose of this file is to help port libs into the bootloader.
#ifndef __NE_ARM64__
#include <string.h>
#endif
#define kLongMax ((long) (~0UL >> 1))
#define kLongMin (~kLongMax)
#ifdef __BOOTZ__
/// @brief memset definition in C++.
/// @param dst destination pointer.
/// @param byte value to fill in.
/// @param len length of of src.
EXTERN_C void* memset(void* dst, int byte, long long unsigned int len);
/// @brief memcpy definition in C++.
/// @param dst destination pointer.
/// @param src source pointer.
/// @param len length of of src.
EXTERN_C void* memcpy(void* dst, const void* src, long long unsigned int len);
/// @brief strlen definition in C++.
EXTERN_C size_t strlen(const char* whatToCheck);
/// @brief strcmp definition in C++.
EXTERN_C int strcmp(const char* whatToCheck, const char* whatToCheckRight);
#else
#ifndef __NE_ARM64__
#include <string.h>
#endif
#endif // __BOOTZ__
#define SetMem(dst, c, sz) memset(dst, c, sz)
#define MoveMem(dst, src, sz) memcpy(dst, src, sz)
#define CopyMem(dst, src, sz) memcpy(dst, src, sz)
#define StrLen(src) strlen(src)
#define StrCmp(dst, src) strcmp(dst, src)
inline int IsSpace(int c) {
return c == ' ';
}
inline int StringNCompare(const char* destination, const char* source, long length) {
long err = 0;
for (long i = 0UL; i < length; ++i) {
if (source[i] != destination[i]) ++err;
}
return err;
}
inline long StringToLong(const char* nptr, char** endptr, int base) {
const char *p = nptr, *endp;
bool is_neg = 0, overflow = 0;
/* Need unsigned so (-kLongMin) can fit in these: */
unsigned long n = 0UL, cutoff;
int cutlim;
if (base < 0 || base == 1 || base > 36) {
return 0L;
}
endp = nptr;
while (IsSpace(*p)) p++;
if (*p == '+') {
p++;
} else if (*p == '-') {
is_neg = 1, p++;
}
if (*p == '0') {
p++;
/* For strtol(" 0xZ", &endptr, 16), endptr should point to 'x';
* pointing to ' ' or '0' is non-compliant.
* (Many implementations do this wrong.) */
endp = p;
if (base == 16 && (*p == 'X' || *p == 'x')) {
p++;
} else if (base == 2 && (*p == 'B' || *p == 'b')) {
/* C23 standard supports "0B" and "0b" prefixes. */
p++;
} else if (base == 0) {
if (*p == 'X' || *p == 'x') {
base = 16, p++;
} else if (*p == 'B' || *p == 'b') {
base = 2, p++;
} else {
base = 8;
}
}
} else if (base == 0) {
base = 10;
}
cutoff = (is_neg) ? -(kLongMin / base) : kLongMax / base;
cutlim = (is_neg) ? -(kLongMin % base) : kLongMax % base;
while (1) {
int c;
if (*p >= 'A')
c = ((*p - 'A') & (~('a' ^ 'A'))) + 10;
else if (*p <= '9')
c = *p - '0';
else
break;
if (c < 0 || c >= base) break;
endp = ++p;
if (overflow) {
/* endptr should go forward and point to the non-digit character
* (of the given base); required by ANSI standard. */
if (endptr) continue;
break;
}
if (n > cutoff || (n == cutoff && c > cutlim)) {
overflow = 1;
continue;
}
n = n * base + c;
}
if (endptr) *endptr = (char*) endp;
if (overflow) {
return ((is_neg) ? kLongMin : kLongMax);
}
return (long) ((is_neg) ? -n : n);
}
#endif
|
