third_party/lzma_sdk/CpuArch.h

   1 /* CpuArch.h -- CPU specific code
   2 2010-10-26: Igor Pavlov : Public domain */
   3
   4 #ifndef __CPU_ARCH_H
   5 #define __CPU_ARCH_H
   6
   7 #include <stdlib.h>
   8 #include "Types.h"
   9
  10 EXTERN_C_BEGIN
  11
  12 /*
  13 MY_CPU_LE means that CPU is LITTLE ENDIAN.
  14 If MY_CPU_LE is not defined, we don't know about that property of platform (it can be LITTLE ENDIAN).
  15
  16 MY_CPU_LE_UNALIGN means that CPU is LITTLE ENDIAN and CPU supports unaligned memory accesses.
  17 If MY_CPU_LE_UNALIGN is not defined, we don't know about these properties of platform.
  18 */
  19
  20 #if defined(_M_X64) || defined(_M_AMD64) || defined(__x86_64__)
  21 #define MY_CPU_AMD64
  22 #endif
  23
  24 #if defined(MY_CPU_AMD64) || defined(_M_IA64)
  25 #define MY_CPU_64BIT
  26 #endif
  27
  28 #if defined(_M_IX86) || defined(__i386__)
  29 #define MY_CPU_X86
  30 #endif
  31
  32 #if defined(MY_CPU_X86) || defined(MY_CPU_AMD64)
  33 #define MY_CPU_X86_OR_AMD64
  34 #endif
  35
  36 #if defined(MY_CPU_X86) || defined(_M_ARM)
  37 #define MY_CPU_32BIT
  38 #endif
  39
  40 #if defined(_WIN32) && defined(_M_ARM)
  41 #define MY_CPU_ARM_LE
  42 #endif
  43
  44 #if defined(_WIN32) && defined(_M_IA64)
  45 #define MY_CPU_IA64_LE
  46 #endif
  47
  48 #if defined(MY_CPU_X86_OR_AMD64)
  49 #define MY_CPU_LE_UNALIGN
  50 #endif
  51
  52 #if defined(MY_CPU_X86_OR_AMD64) || defined(MY_CPU_ARM_LE)  || defined(MY_CPU_IA64_LE) || defined(__ARMEL__) || defined(__MIPSEL__) || defined(__LITTLE_ENDIAN__)
  53 #define MY_CPU_LE
  54 #endif
  55
  56 #if defined(__BIG_ENDIAN__)
  57 #define MY_CPU_BE
  58 #endif
  59
  60 #if defined(MY_CPU_LE) && defined(MY_CPU_BE)
  61 Stop_Compiling_Bad_Endian
  62 #endif
  63
  64 #ifdef MY_CPU_LE_UNALIGN
  65
  66 #define GetUi16(p) (*(const UInt16 *)(p))
  67 #define GetUi32(p) (*(const UInt32 *)(p))
  68 #define GetUi64(p) (*(const UInt64 *)(p))
  69 #define SetUi16(p, d) *(UInt16 *)(p) = (d);
  70 #define SetUi32(p, d) *(UInt32 *)(p) = (d);
  71 #define SetUi64(p, d) *(UInt64 *)(p) = (d);
  72
  73 #else
  74
  75 #define GetUi16(p) (((const Byte *)(p))[0] | ((UInt16)((const Byte *)(p))[1] << 8))
  76
  77 #define GetUi32(p) ( \
  78              ((const Byte *)(p))[0]        | \
  79     ((UInt32)((const Byte *)(p))[1] <<  8) | \
  80     ((UInt32)((const Byte *)(p))[2] << 16) | \
  81     ((UInt32)((const Byte *)(p))[3] << 24))
  82
  83 #define GetUi64(p) (GetUi32(p) | ((UInt64)GetUi32(((const Byte *)(p)) + 4) << 32))
  84
  85 #define SetUi16(p, d) { UInt32 _x_ = (d); \
  86     ((Byte *)(p))[0] = (Byte)_x_; \
  87     ((Byte *)(p))[1] = (Byte)(_x_ >> 8); }
  88
  89 #define SetUi32(p, d) { UInt32 _x_ = (d); \
  90     ((Byte *)(p))[0] = (Byte)_x_; \
  91     ((Byte *)(p))[1] = (Byte)(_x_ >> 8); \
  92     ((Byte *)(p))[2] = (Byte)(_x_ >> 16); \
  93     ((Byte *)(p))[3] = (Byte)(_x_ >> 24); }
  94
  95 #define SetUi64(p, d) { UInt64 _x64_ = (d); \
  96     SetUi32(p, (UInt32)_x64_); \
  97     SetUi32(((Byte *)(p)) + 4, (UInt32)(_x64_ >> 32)); }
  98
  99 #endif
 100
 101 #if defined(MY_CPU_LE_UNALIGN) && defined(_WIN64) && (_MSC_VER >= 1300)
 102
 103 #pragma intrinsic(_byteswap_ulong)
 104 #pragma intrinsic(_byteswap_uint64)
 105 #define GetBe32(p) _byteswap_ulong(*(const UInt32 *)(const Byte *)(p))
 106 #define GetBe64(p) _byteswap_uint64(*(const UInt64 *)(const Byte *)(p))
 107
 108 #else
 109
 110 #define GetBe32(p) ( \
 111     ((UInt32)((const Byte *)(p))[0] << 24) | \
 112     ((UInt32)((const Byte *)(p))[1] << 16) | \
 113     ((UInt32)((const Byte *)(p))[2] <<  8) | \
 114              ((const Byte *)(p))[3] )
 115
 116 #define GetBe64(p) (((UInt64)GetBe32(p) << 32) | GetBe32(((const Byte *)(p)) + 4))
 117
 118 #endif
 119
 120 #define GetBe16(p) (((UInt16)((const Byte *)(p))[0] << 8) | ((const Byte *)(p))[1])
 121
 122
 123 #ifdef MY_CPU_X86_OR_AMD64
 124
 125 typedef struct
 126 {
 127   UInt32 maxFunc;
 128   UInt32 vendor[3];
 129   UInt32 ver;
 130   UInt32 b;
 131   UInt32 c;
 132   UInt32 d;
 133 } Cx86cpuid;
 134
 135 enum
 136 {
 137   CPU_FIRM_INTEL,
 138   CPU_FIRM_AMD,
 139   CPU_FIRM_VIA
 140 };
 141
 142 Bool x86cpuid_CheckAndRead(Cx86cpuid *p);
 143 int x86cpuid_GetFirm(const Cx86cpuid *p);
 144
 145 #define x86cpuid_GetFamily(p) (((p)->ver >> 8) & 0xFF00F)
 146 #define x86cpuid_GetModel(p) (((p)->ver >> 4) & 0xF00F)
 147 #define x86cpuid_GetStepping(p) ((p)->ver & 0xF)
 148
 149 Bool CPU_Is_InOrder();
 150 Bool CPU_Is_Aes_Supported();
 151
 152 #endif
 153
 154 EXTERN_C_END
 155
 156 #endif