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