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| author | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2013-06-22 16:16:13 +0200 |
|---|---|---|
| committer | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2014-11-08 23:18:07 +0100 |
| commit | c606f0866c3a2a5db3ef9bc41738ef33eb9612a9 (patch) | |
| tree | 5847c644cdfff3c1dd55b88b565448087ae89f11 /src/Platform/Memory.h | |
| download | VeraCrypt-c606f0866c3a2a5db3ef9bc41738ef33eb9612a9.tar.gz VeraCrypt-c606f0866c3a2a5db3ef9bc41738ef33eb9612a9.zip | |
Add original TrueCrypt 7.1a sources
Diffstat (limited to 'src/Platform/Memory.h')
| -rw-r--r-- | src/Platform/Memory.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/Platform/Memory.h b/src/Platform/Memory.h new file mode 100644 index 00000000..3a17ba7b --- /dev/null +++ b/src/Platform/Memory.h @@ -0,0 +1,174 @@ +/*
+ Copyright (c) 2008-2009 TrueCrypt Developers Association. All rights reserved.
+
+ Governed by the TrueCrypt License 3.0 the full text of which is contained in
+ the file License.txt included in TrueCrypt binary and source code distribution
+ packages.
+*/
+
+#ifndef TC_HEADER_Platform_Memory
+#define TC_HEADER_Platform_Memory
+
+#include <new>
+#include <memory.h>
+#include "PlatformBase.h"
+
+#ifdef TC_WINDOWS
+
+# ifndef LITTLE_ENDIAN
+# define LITTLE_ENDIAN 1234
+# endif
+# ifndef BYTE_ORDER
+# define BYTE_ORDER LITTLE_ENDIAN
+# endif
+
+#elif !defined(BYTE_ORDER)
+
+# ifdef TC_MACOSX
+# include <machine/endian.h>
+# elif defined (TC_BSD)
+# include <sys/endian.h>
+# elif defined (TC_SOLARIS)
+# include <sys/types.h>
+# define LITTLE_ENDIAN 1234
+# define BIG_ENDIAN 4321
+# ifdef _BIG_ENDIAN
+# define BYTE_ORDER BIG_ENDIAN
+# else
+# define BYTE_ORDER LITTLE_ENDIAN
+# endif
+# else
+# include <endian.h>
+# endif
+
+# ifndef BYTE_ORDER
+# ifndef __BYTE_ORDER
+# error Byte ordering cannot be determined (BYTE_ORDER undefined).
+# endif
+
+# define BYTE_ORDER __BYTE_ORDER
+# endif
+
+# ifndef LITTLE_ENDIAN
+# define LITTLE_ENDIAN __LITTLE_ENDIAN
+# endif
+
+# ifndef BIG_ENDIAN
+# define BIG_ENDIAN __BIG_ENDIAN
+# endif
+
+#endif // !BYTE_ORDER
+
+#if BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN
+# error Unsupported byte ordering detected.
+#endif
+
+namespace TrueCrypt
+{
+ class Memory
+ {
+ public:
+ static void *Allocate (size_t size);
+ static int Compare (const void *memory1, size_t size1, const void *memory2, size_t size2);
+ static void Copy (void *memoryDestination, const void *memorySource, size_t size);
+ static void Erase (void *memory, size_t size);
+ static void Free (void *memory);
+ static void Zero (void *memory, size_t size);
+ };
+
+ class Endian
+ {
+ public:
+ static byte Big (const byte &x)
+ {
+ return x;
+ }
+
+ static uint16 Big (const uint16 &x)
+ {
+#if BYTE_ORDER == BIG_ENDIAN
+ return x;
+#else
+ return MirrorBytes (x);
+#endif
+ }
+
+ static uint32 Big (const uint32 &x)
+ {
+#if BYTE_ORDER == BIG_ENDIAN
+ return x;
+#else
+ return MirrorBytes (x);
+#endif
+ }
+
+ static uint64 Big (const uint64 &x)
+ {
+#if BYTE_ORDER == BIG_ENDIAN
+ return x;
+#else
+ return MirrorBytes (x);
+#endif
+ }
+
+ static byte Little (const byte &x)
+ {
+ return x;
+ }
+
+ static uint16 Little (const uint16 &x)
+ {
+#if BYTE_ORDER == LITTLE_ENDIAN
+ return x;
+#else
+ return MirrorBytes (x);
+#endif
+ }
+
+ static uint32 Little (const uint32 &x)
+ {
+#if BYTE_ORDER == LITTLE_ENDIAN
+ return x;
+#else
+ return MirrorBytes (x);
+#endif
+ }
+
+ static uint64 Little (const uint64 &x)
+ {
+#if BYTE_ORDER == LITTLE_ENDIAN
+ return x;
+#else
+ return MirrorBytes (x);
+#endif
+ }
+
+ protected:
+ static uint16 MirrorBytes (const uint16 &x)
+ {
+ return (x << 8) | (x >> 8);
+ }
+
+ static uint32 MirrorBytes (const uint32 &x)
+ {
+ uint32 n = (byte) x;
+ n <<= 8; n |= (byte) (x >> 8);
+ n <<= 8; n |= (byte) (x >> 16);
+ return (n << 8) | (byte) (x >> 24);
+ }
+
+ static uint64 MirrorBytes (const uint64 &x)
+ {
+ uint64 n = (byte) x;
+ n <<= 8; n |= (byte) (x >> 8);
+ n <<= 8; n |= (byte) (x >> 16);
+ n <<= 8; n |= (byte) (x >> 24);
+ n <<= 8; n |= (byte) (x >> 32);
+ n <<= 8; n |= (byte) (x >> 40);
+ n <<= 8; n |= (byte) (x >> 48);
+ return (n << 8) | (byte) (x >> 56);
+ }
+ };
+}
+
+#endif // TC_HEADER_Platform_Memory
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