unarr/lzmasdk/CpuArch.h

0001 /* CpuArch.h -- CPU specific code
0002 2013-11-12: Igor Pavlov : Public domain */
0003
0004 #ifndef __CPU_ARCH_H
0005 #define __CPU_ARCH_H
0006
0007 #include "7zTypes.h"
0008
0009 EXTERN_C_BEGIN
0010
0011 /*
0012 MY_CPU_LE means that CPU is LITTLE ENDIAN.
0013 If MY_CPU_LE is not defined, we don't know about that property of platform (it can be LITTLE ENDIAN).
0014
0015 MY_CPU_LE_UNALIGN means that CPU is LITTLE ENDIAN and CPU supports unaligned memory accesses.
0016 If MY_CPU_LE_UNALIGN is not defined, we don't know about these properties of platform.
0017 */
0018
0019 #if defined(_M_X64) || defined(_M_AMD64) || defined(__x86_64__)
0020 #define MY_CPU_AMD64
0021 #endif
0022
0023 #if defined(MY_CPU_AMD64) || defined(_M_IA64)
0024 #define MY_CPU_64BIT
0025 #endif
0026
0027 #if defined(_M_IX86) || defined(__i386__)
0028 #define MY_CPU_X86
0029 #endif
0030
0031 #if defined(MY_CPU_X86) || defined(MY_CPU_AMD64)
0032 #define MY_CPU_X86_OR_AMD64
0033 #endif
0034
0035 #if defined(MY_CPU_X86) || defined(_M_ARM)
0036 #define MY_CPU_32BIT
0037 #endif
0038
0039 #if defined(_WIN32) && defined(_M_ARM)
0040 #define MY_CPU_ARM_LE
0041 #endif
0042
0043 #if defined(_WIN32) && defined(_M_IA64)
0044 #define MY_CPU_IA64_LE
0045 #endif
0046
0047 #if defined(MY_CPU_X86_OR_AMD64)
0048 #define MY_CPU_LE_UNALIGN
0049 #endif
0050
0051 #if defined(MY_CPU_X86_OR_AMD64) || defined(MY_CPU_ARM_LE)  || defined(MY_CPU_IA64_LE) || defined(__ARMEL__) || defined(__MIPSEL__) || defined(__LITTLE_ENDIAN__)
0052 #define MY_CPU_LE
0053 #endif
0054
0055 #if defined(__BIG_ENDIAN__) || defined(__m68k__) ||  defined(__ARMEB__) || defined(__MIPSEB__)
0056 #define MY_CPU_BE
0057 #endif
0058
0059 #if defined(MY_CPU_LE) && defined(MY_CPU_BE)
0060 Stop_Compiling_Bad_Endian
0061 #endif
0062
0063 #ifdef MY_CPU_LE_UNALIGN
0064
0065 #define GetUi16(p) (*(const UInt16 *)(const void *)(p))
0066 #define GetUi32(p) (*(const UInt32 *)(const void *)(p))
0067 #define GetUi64(p) (*(const UInt64 *)(const void *)(p))
0068 #define SetUi16(p, d) *(UInt16 *)(p) = (d);
0069 #define SetUi32(p, d) *(UInt32 *)(p) = (d);
0070 #define SetUi64(p, d) *(UInt64 *)(p) = (d);
0071
0072 #else
0073
0074 #define GetUi16(p) (((const Byte *)(p))[0] | ((UInt16)((const Byte *)(p))[1] << 8))
0075
0076 #define GetUi32(p) ( \
0077              ((const Byte *)(p))[0]        | \
0078     ((UInt32)((const Byte *)(p))[1] <<  8) | \
0079     ((UInt32)((const Byte *)(p))[2] << 16) | \
0080     ((UInt32)((const Byte *)(p))[3] << 24))
0081
0082 #define GetUi64(p) (GetUi32(p) | ((UInt64)GetUi32(((const Byte *)(p)) + 4) << 32))
0083
0084 #define SetUi16(p, d) { UInt32 _x_ = (d); \
0085     ((Byte *)(p))[0] = (Byte)_x_; \
0086     ((Byte *)(p))[1] = (Byte)(_x_ >> 8); }
0087
0088 #define SetUi32(p, d) { UInt32 _x_ = (d); \
0089     ((Byte *)(p))[0] = (Byte)_x_; \
0090     ((Byte *)(p))[1] = (Byte)(_x_ >> 8); \
0091     ((Byte *)(p))[2] = (Byte)(_x_ >> 16); \
0092     ((Byte *)(p))[3] = (Byte)(_x_ >> 24); }
0093
0094 #define SetUi64(p, d) { UInt64 _x64_ = (d); \
0095     SetUi32(p, (UInt32)_x64_); \
0096     SetUi32(((Byte *)(p)) + 4, (UInt32)(_x64_ >> 32)); }
0097
0098 #endif
0099
0100 #if defined(MY_CPU_LE_UNALIGN) && defined(_WIN64) && (_MSC_VER >= 1300)
0101
0102 #include <stdlib.h>
0103
0104 #pragma intrinsic(_byteswap_ulong)
0105 #pragma intrinsic(_byteswap_uint64)
0106 #define GetBe32(p) _byteswap_ulong(*(const UInt32 *)(const Byte *)(p))
0107 #define GetBe64(p) _byteswap_uint64(*(const UInt64 *)(const Byte *)(p))
0108
0109 #else
0110
0111 #define GetBe32(p) ( \
0112     ((UInt32)((const Byte *)(p))[0] << 24) | \
0113     ((UInt32)((const Byte *)(p))[1] << 16) | \
0114     ((UInt32)((const Byte *)(p))[2] <<  8) | \
0115              ((const Byte *)(p))[3] )
0116
0117 #define GetBe64(p) (((UInt64)GetBe32(p) << 32) | GetBe32(((const Byte *)(p)) + 4))
0118
0119 #endif
0120
0121 #define GetBe16(p) ((UInt16)(((UInt16)((const Byte *)(p))[0] << 8) | ((const Byte *)(p))[1]))
0122
0123
0124 #ifdef MY_CPU_X86_OR_AMD64
0125
0126 typedef struct
0127 {
0128   UInt32 maxFunc;
0129   UInt32 vendor[3];
0130   UInt32 ver;
0131   UInt32 b;
0132   UInt32 c;
0133   UInt32 d;
0134 } Cx86cpuid;
0135
0136 enum
0137 {
0138   CPU_FIRM_INTEL,
0139   CPU_FIRM_AMD,
0140   CPU_FIRM_VIA
0141 };
0142
0143 Bool x86cpuid_CheckAndRead(Cx86cpuid *p);
0144 int x86cpuid_GetFirm(const Cx86cpuid *p);
0145
0146 #define x86cpuid_GetFamily(p) (((p)->ver >> 8) & 0xFF00F)
0147 #define x86cpuid_GetModel(p) (((p)->ver >> 4) & 0xF00F)
0148 #define x86cpuid_GetStepping(p) ((p)->ver & 0xF)
0149
0150 Bool CPU_Is_InOrder();
0151 Bool CPU_Is_Aes_Supported();
0152
0153 #endif
0154
0155 EXTERN_C_END
0156
0157 #endif