forked from flashrom/flashrom
-
Notifications
You must be signed in to change notification settings - Fork 0
/
platform.h
175 lines (150 loc) · 5.11 KB
/
platform.h
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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
/*
* This file is part of the flashrom project.
*
* Copyright (C) 2011 Carl-Daniel Hailfinger
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/*
* Header file to determine target OS and CPU architecture.
*/
#ifndef __PLATFORM_H__
#define __PLATFORM_H__ 1
// Helper defines for operating systems
#if defined(__gnu_linux__) || defined(__linux__)
#define IS_LINUX 1
#else
#define IS_LINUX 0
#endif
#if defined(__APPLE__) && defined(__MACH__) /* yes, both. */
#define IS_MACOSX 1
#else
#define IS_MACOSX 0
#endif
#if defined(_WIN32) || defined(_WIN64) || defined(__WIN32__) || defined(__WINDOWS__)
#define IS_WINDOWS 1
#else
#define IS_WINDOWS 0
#endif
// Likewise for target architectures
#if defined (__i386__) || defined (__x86_64__) || defined(__amd64__)
#define __FLASHROM_ARCH__ "x86"
#define IS_X86 1
#elif defined (__mips) || defined (__mips__) || defined (__MIPS__) || defined (mips)
#define __FLASHROM_ARCH__ "mips"
#define IS_MIPS 1
#elif defined(__powerpc) || defined(__powerpc__) || defined(__powerpc64__) || defined(__POWERPC__) || \
defined(__ppc__) || defined(__ppc64__) || defined(_M_PPC) || defined(_ARCH_PPC) || \
defined(_ARCH_PPC64) || defined(__ppc)
#define __FLASHROM_ARCH__ "ppc"
#define IS_PPC 1
#elif defined(__arm__) || defined(__TARGET_ARCH_ARM) || defined(_ARM) || defined(_M_ARM) || defined(__arm) || \
defined(__aarch64__)
#define __FLASHROM_ARCH__ "arm"
#define IS_ARM 1
#elif defined (__sparc__) || defined (__sparc)
#define __FLASHROM_ARCH__ "sparc"
#define IS_SPARC 1
#elif defined (__alpha__)
#define __FLASHROM_ARCH__ "alpha"
#define IS_ALPHA 1
#elif defined (__hppa__) || defined (__hppa)
#define __FLASHROM_ARCH__ "hppa"
#define IS_HPPA 1
#elif defined (__m68k__)
#define __FLASHROM_ARCH__ "m68k"
#define IS_M68K 1
#elif defined (__riscv)
#define __FLASHROM_ARCH__ "riscv"
#define IS_RISCV 1
#elif defined (__sh__)
#define __FLASHROM_ARCH__ "sh"
#define IS_SH 1
#elif defined(__s390__) || defined(__s390x__) || defined(__zarch__)
#define __FLASHROM_ARCH__ "s390"
#define IS_S390 1
#elif defined(__arc__)
#define __FLASHROM_ARCH__ "arc"
#define IS_ARC 1
#endif
#if !(IS_X86 || IS_MIPS || IS_PPC || IS_ARM || IS_SPARC || IS_ALPHA || IS_HPPA || IS_M68K || IS_RISCV || IS_SH || IS_S390 || IS_ARC)
#error Unknown architecture
#endif
/* The next big hunk tries to guess endianness from various preprocessor macros */
/* First some error checking in case some weird header has defined both.
* NB: OpenBSD always defines _BIG_ENDIAN and _LITTLE_ENDIAN. */
#if defined (__LITTLE_ENDIAN__) && defined (__BIG_ENDIAN__)
#error Conflicting endianness #define
#endif
#if IS_X86
/* All x86 is little-endian. */
#define __FLASHROM_LITTLE_ENDIAN__ 1
#elif IS_MIPS
/* MIPS can be either endian. */
#if defined (__MIPSEL) || defined (__MIPSEL__) || defined (_MIPSEL) || defined (MIPSEL)
#define __FLASHROM_LITTLE_ENDIAN__ 1
#elif defined (__MIPSEB) || defined (__MIPSEB__) || defined (_MIPSEB) || defined (MIPSEB)
#define __FLASHROM_BIG_ENDIAN__ 1
#endif
#elif IS_PPC
/* PowerPC can be either endian. */
#if defined (_BIG_ENDIAN) || defined (__BIG_ENDIAN__)
#define __FLASHROM_BIG_ENDIAN__ 1
#elif defined (_LITTLE_ENDIAN) || defined (__LITTLE_ENDIAN__)
#define __FLASHROM_LITTLE_ENDIAN__ 1
#endif
#elif IS_ARM
/* ARM can be either endian. */
#if defined (__ARMEB__)
#define __FLASHROM_BIG_ENDIAN__ 1
#elif defined (__ARMEL__)
#define __FLASHROM_LITTLE_ENDIAN__ 1
#endif
#elif IS_SPARC
/* SPARC is big endian in general (but allows to access data in little endian too). */
#define __FLASHROM_BIG_ENDIAN__ 1
#elif IS_ARC
#if defined(__BIG_ENDIAN__)
#define __FLASHROM_BIG_ENDIAN__ 1
#else
#define __FLASHROM_LITTLE_ENDIAN__ 1
#endif
#endif /* IS_? */
#if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)
/* If architecture-specific approaches fail try generic variants. First: BSD (works about everywhere). */
#if !IS_WINDOWS
#include <sys/param.h>
#if defined (__BYTE_ORDER)
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define __FLASHROM_LITTLE_ENDIAN__
#elif __BYTE_ORDER == __BIG_ENDIAN
#define __FLASHROM_BIG_ENDIAN__
#else
#error Unknown byte order!
#endif
#endif /* defined __BYTE_ORDER */
#endif /* !IS_WINDOWS */
#if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)
/* Nonstandard libc-specific macros for determining endianness. */
/* musl provides an endian.h as well... but it can not be detected from within C. */
#if defined(__GLIBC__)
#include <endian.h>
#if BYTE_ORDER == LITTLE_ENDIAN
#define __FLASHROM_LITTLE_ENDIAN__ 1
#elif BYTE_ORDER == BIG_ENDIAN
#define __FLASHROM_BIG_ENDIAN__ 1
#endif
#endif
#endif
#endif
#if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)
#error Unable to determine endianness.
#endif
#endif /* !__PLATFORM_H__ */