VeraCrypt
aboutsummaryrefslogtreecommitdiff
path: root/src/Crypto/config.h
blob: 792ac67898a5d085026c89bd5008018a782cfaa7 (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
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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
#ifndef CRYPTOPP_CONFIG_H
#define CRYPTOPP_CONFIG_H

#ifdef __GNUC__
	#define VC_INLINE	static inline __attribute__((always_inline))
#elif defined (_MSC_VER)
	#define VC_INLINE	__forceinline
#else
	#define VC_INLINE	static inline
#endif

#ifdef __GNUC__
	#define CRYPTOPP_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#endif


// Apple and LLVM's Clang. Apple Clang version 7.0 roughly equals LLVM Clang version 3.7
#if defined(__clang__ ) && !defined(__apple_build_version__)
    #define CRYPTOPP_CLANG_VERSION (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)
#elif defined(__clang__ ) && defined(__apple_build_version__)
    #define CRYPTOPP_APPLE_CLANG_VERSION (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)
#endif

// Clang due to "Inline assembly operands don't work with .intel_syntax", http://llvm.org/bugs/show_bug.cgi?id=24232
//   TODO: supply the upper version when LLVM fixes it. We set it to 20.0 for compilation purposes.
#if (defined(CRYPTOPP_CLANG_VERSION) && CRYPTOPP_CLANG_VERSION <= 200000) || (defined(CRYPTOPP_APPLE_CLANG_VERSION) && CRYPTOPP_APPLE_CLANG_VERSION <= 200000)
#define CRYPTOPP_DISABLE_INTEL_ASM 1
#endif

#ifndef CRYPTOPP_L1_CACHE_LINE_SIZE
	// This should be a lower bound on the L1 cache line size. It's used for defense against timing attacks.
    // Also see http://stackoverflow.com/questions/794632/programmatically-get-the-cache-line-size.
    #if defined(_M_X64) || defined(__x86_64__) || (__ILP32__ >= 1)
		#define CRYPTOPP_L1_CACHE_LINE_SIZE 64
	#else
		// L1 cache line size is 32 on Pentium III and earlier
		#define CRYPTOPP_L1_CACHE_LINE_SIZE 32
	#endif
#endif

#if defined(_MSC_VER) && (_MSC_VER > 1200)
	#define CRYPTOPP_MSVC6PP_OR_LATER
#endif

#ifndef CRYPTOPP_ALIGN_DATA
	#if defined(_MSC_VER)
		#define CRYPTOPP_ALIGN_DATA(x) __declspec(align(x))
	#elif defined(__GNUC__)
		#define CRYPTOPP_ALIGN_DATA(x) __attribute__((aligned(x)))
	#else
		#define CRYPTOPP_ALIGN_DATA(x)
	#endif
#endif

#ifndef CRYPTOPP_SECTION_ALIGN16
	#if defined(__GNUC__) && !defined(__APPLE__)
		// the alignment attribute doesn't seem to work without this section attribute when -fdata-sections is turned on
		#define CRYPTOPP_SECTION_ALIGN16 __attribute__((section ("CryptoPP_Align16")))
	#else
		#define CRYPTOPP_SECTION_ALIGN16
	#endif
#endif

#if defined(_MSC_VER) || defined(__fastcall)
	#define CRYPTOPP_FASTCALL __fastcall
#else
	#define CRYPTOPP_FASTCALL
#endif

#ifdef CRYPTOPP_DISABLE_X86ASM		// for backwards compatibility: this macro had both meanings
#define CRYPTOPP_DISABLE_ASM
#define CRYPTOPP_DISABLE_SSE2
#endif

// Apple's Clang prior to 5.0 cannot handle SSE2 (and Apple does not use LLVM Clang numbering...)
#if defined(CRYPTOPP_APPLE_CLANG_VERSION) && (CRYPTOPP_APPLE_CLANG_VERSION < 50000)
# define CRYPTOPP_DISABLE_ASM
#endif

#if !defined(CRYPTOPP_DISABLE_ASM) && ((defined(_MSC_VER) && defined(_M_IX86)) || (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))))
    // C++Builder 2010 does not allow "call label" where label is defined within inline assembly
    #define CRYPTOPP_X86_ASM_AVAILABLE

    #if !defined(CRYPTOPP_DISABLE_SSE2) && (defined(CRYPTOPP_MSVC6PP_OR_LATER) || CRYPTOPP_GCC_VERSION >= 30300 || defined(__SSE2__))
        #define CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE 1
    #else
        #define CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE 0
    #endif

    // SSE3 was actually introduced in GNU as 2.17, which was released 6/23/2006, but we can't tell what version of binutils is installed.
    // GCC 4.1.2 was released on 2/13/2007, so we'll use that as a proxy for the binutils version. Also see the output of
    // `gcc -dM -E -march=native - < /dev/null | grep -i SSE` for preprocessor defines available.
    #if !defined(CRYPTOPP_DISABLE_SSSE3) && (_MSC_VER >= 1400 || CRYPTOPP_GCC_VERSION >= 40102 || defined(__SSSE3__) || defined(__SSE3__))
        #define CRYPTOPP_BOOL_SSSE3_ASM_AVAILABLE 1
    #else
        #define CRYPTOPP_BOOL_SSSE3_ASM_AVAILABLE 0
    #endif
#endif

#if !defined(CRYPTOPP_DISABLE_ASM) && defined(_MSC_VER) && defined(_M_X64)
    #define CRYPTOPP_X64_MASM_AVAILABLE
#endif

#if !defined(CRYPTOPP_DISABLE_ASM) && defined(__GNUC__) && defined(__x86_64__)
    #define CRYPTOPP_X64_ASM_AVAILABLE
#endif

#if !defined(CRYPTOPP_DISABLE_SSE2) && (defined(CRYPTOPP_MSVC6PP_OR_LATER) || defined(__SSE2__)) && !defined(_M_ARM)
    #define CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE 1
#else
    #define CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE 0
#endif

#if !defined(CRYPTOPP_DISABLE_SSSE3) && !defined(CRYPTOPP_DISABLE_AESNI) && CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE && (CRYPTOPP_GCC_VERSION >= 40400 || _MSC_FULL_VER >= 150030729 || __INTEL_COMPILER >= 1110 || defined(__AES__))
    #define CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE 1
#else
    #define CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE 0
#endif

#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE || CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)
    #define CRYPTOPP_BOOL_ALIGN16 1
#else
    #define CRYPTOPP_BOOL_ALIGN16 0
#endif

#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE && (defined(__SSE4_1__) || defined(__INTEL_COMPILER) || defined(_MSC_VER))
    #define CRYPTOPP_BOOL_SSE41_INTRINSICS_AVAILABLE 1
#else
    #define CRYPTOPP_BOOL_SSE41_INTRINSICS_AVAILABLE 0
#endif

// how to allocate 16-byte aligned memory (for SSE2)
#if defined(_MSC_VER)
	#define CRYPTOPP_MM_MALLOC_AVAILABLE
#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
	#define CRYPTOPP_MALLOC_ALIGNMENT_IS_16
#elif defined(__linux__) || defined(__sun__) || defined(__CYGWIN__)
	#define CRYPTOPP_MEMALIGN_AVAILABLE
#else
	#define CRYPTOPP_NO_ALIGNED_ALLOC
#endif

// how to declare class constants
#if (defined(_MSC_VER) && _MSC_VER <= 1300) || defined(__INTEL_COMPILER)
#	define CRYPTOPP_CONSTANT(x) enum {x};
#else
#	define CRYPTOPP_CONSTANT(x) static const int x;
#endif

// Linux provides X32, which is 32-bit integers, longs and pointers on x86_64 using the full x86_64 register set.
// Detect via __ILP32__ (http://wiki.debian.org/X32Port). However, __ILP32__ shows up in more places than
// the System V ABI specs calls out, like on just about any 32-bit system with Clang.
#if ((__ILP32__ >= 1) || (_ILP32 >= 1)) && defined(__x86_64__)
    #define CRYPTOPP_BOOL_X32 1
#else
    #define CRYPTOPP_BOOL_X32 0
#endif

// see http://predef.sourceforge.net/prearch.html
#if (defined(_M_IX86) || defined(__i386__) || defined(__i386) || defined(_X86_) || defined(__I86__) || defined(__INTEL__)) && !CRYPTOPP_BOOL_X32
    #define CRYPTOPP_BOOL_X86 1
#else
    #define CRYPTOPP_BOOL_X86 0
#endif

#if (defined(_M_X64) || defined(__x86_64__)) && !CRYPTOPP_BOOL_X32
    #define CRYPTOPP_BOOL_X64 1
#else
    #define CRYPTOPP_BOOL_X64 0
#endif

// Undo the ASM and Intrinsic related defines due to X32.
#if CRYPTOPP_BOOL_X32
# undef CRYPTOPP_BOOL_X64
# undef CRYPTOPP_X64_ASM_AVAILABLE
# undef CRYPTOPP_X64_MASM_AVAILABLE
#endif

#if !defined(CRYPTOPP_NO_UNALIGNED_DATA_ACCESS) && !defined(CRYPTOPP_ALLOW_UNALIGNED_DATA_ACCESS)
#if (CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32 || defined(__powerpc__) || (__ARM_FEATURE_UNALIGNED >= 1))
    #define CRYPTOPP_ALLOW_UNALIGNED_DATA_ACCESS
#endif
#endif

// this version of the macro is fastest on Pentium 3 and Pentium 4 with MSVC 6 SP5 w/ Processor Pack
#define GETBYTE(x, y) (unsigned int)((unsigned char)((x)>>(8*(y))))
// these may be faster on other CPUs/compilers
// #define GETBYTE(x, y) (unsigned int)(((x)>>(8*(y)))&255)
// #define GETBYTE(x, y) (((byte *)&(x))[y])

#define CRYPTOPP_GET_BYTE_AS_BYTE(x, y) ((byte)((x)>>(8*(y))))

#endif