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Edit File: hv_macro.h
#ifndef PERL_SEEN_HV_MACRO_H /* compile once */ #define PERL_SEEN_HV_MACRO_H #if IVSIZE == 8 #define CAN64BITHASH #endif /*----------------------------------------------------------------------------- * Endianess, misalignment capabilities and util macros * * The following 3 macros are defined in this section. The other macros defined * are only needed to help derive these 3. * * U8TO16_LE(x) Read a little endian unsigned 32-bit int * U8TO32_LE(x) Read a little endian unsigned 32-bit int * U8TO28_LE(x) Read a little endian unsigned 32-bit int * ROTL32(x,r) Rotate x left by r bits * ROTL64(x,r) Rotate x left by r bits * ROTR32(x,r) Rotate x right by r bits * ROTR64(x,r) Rotate x right by r bits */ #ifndef U32_ALIGNMENT_REQUIRED #if (BYTEORDER == 0x1234 || BYTEORDER == 0x12345678) #define U8TO16_LE(ptr) (*((const U16*)(ptr))) #define U8TO32_LE(ptr) (*((const U32*)(ptr))) #define U8TO64_LE(ptr) (*((const U64*)(ptr))) #elif (BYTEORDER == 0x4321 || BYTEORDER == 0x87654321) #if defined(__GNUC__) && (__GNUC__>4 || (__GNUC__==4 && __GNUC_MINOR__>=3)) #define U8TO16_LE(ptr) (__builtin_bswap16(*((U16*)(ptr)))) #define U8TO32_LE(ptr) (__builtin_bswap32(*((U32*)(ptr)))) #define U8TO64_LE(ptr) (__builtin_bswap64(*((U64*)(ptr)))) #endif #endif #endif #ifndef U8TO16_LE /* Without a known fast bswap32 we're just as well off doing this */ #define U8TO16_LE(ptr) ((U32)(ptr)[0]|(U32)(ptr)[1]<<8) #define U8TO32_LE(ptr) ((U32)(ptr)[0]|(U32)(ptr)[1]<<8|(U32)(ptr)[2]<<16|(U32)(ptr)[3]<<24) #define U8TO64_LE(ptr) ((U64)(ptr)[0]|(U64)(ptr)[1]<<8|(U64)(ptr)[2]<<16|(U64)(ptr)[3]<<24|\ (U64)(ptr)[4]<<32|(U64)(ptr)[5]<<40|\ (U64)(ptr)[6]<<48|(U64)(ptr)[7]<<56) #endif #ifdef CAN64BITHASH #ifndef U64TYPE /* This probably isn't going to work, but failing with a compiler error due to lack of uint64_t is no worse than failing right now with an #error. */ #define U64 uint64_t #endif #endif /* Find best way to ROTL32/ROTL64 */ #if defined(_MSC_VER) #include <stdlib.h> /* Microsoft put _rotl declaration in here */ #define ROTL32(x,r) _rotl(x,r) #define ROTR32(x,r) _rotr(x,r) #define ROTL64(x,r) _rotl64(x,r) #define ROTR64(x,r) _rotr64(x,r) #else /* gcc recognises this code and generates a rotate instruction for CPUs with one */ #define ROTL32(x,r) (((U32)(x) << (r)) | ((U32)(x) >> (32 - (r)))) #define ROTR32(x,r) (((U32)(x) << (32 - (r))) | ((U32)(x) >> (r))) #define ROTL64(x,r) ( ( (U64)(x) << (r) ) | ( (U64)(x) >> ( 64 - (r) ) ) ) #define ROTR64(x,r) ( ( (U64)(x) << ( 64 - (r) ) ) | ( (U64)(x) >> (r) ) ) #endif #ifdef UV_IS_QUAD #define ROTL_UV(x,r) ROTL64(x,r) #define ROTR_UV(x,r) ROTL64(x,r) #else #define ROTL_UV(x,r) ROTL32(x,r) #define ROTR_UV(x,r) ROTR32(x,r) #endif #if IVSIZE == 8 #define CAN64BITHASH #endif #endif