webmcp
changeset 501:01f53490f262
moonhash library: determine endianess on FreeBSD, OpenBSD, NetBSD, and Linux
author | jbe |
---|---|
date | Sun Aug 13 14:55:50 2017 +0200 (2017-08-13) |
parents | 5e6dbaa3e219 |
children | fa902b26589f |
files | libraries/moonhash/moonhash_sha3.c |
line diff
1.1 --- a/libraries/moonhash/moonhash_sha3.c Sun Aug 13 14:31:21 2017 +0200 1.2 +++ b/libraries/moonhash/moonhash_sha3.c Sun Aug 13 14:55:50 2017 +0200 1.3 @@ -2,6 +2,20 @@ 1.4 1.5 #include <stdint.h> 1.6 1.7 +#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) 1.8 +#include <sys/endian.h> 1.9 +#if defined(_BYTE_ORDER) && defined(_LITTLE_ENDIAN) && _BYTE_ORDER == _LITTLE_ENDIAN 1.10 +#define MOONHASH_LITTLE_ENDIAN 1.11 +#endif 1.12 +#elif defined(__linux__) 1.13 +#include <endian.h> 1.14 +#if defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && __BYTE_ORDER == __LITTLE_ENDIAN 1.15 +#define MOONHASH_LITTLE_ENDIAN 1.16 +#endif 1.17 +#else 1.18 +#warning Could not determine endianess, revert to fail safe. 1.19 +#endif 1.20 + 1.21 #define FOR(i,n) for(i=0; i<n; ++i) 1.22 typedef uint8_t u8; 1.23 typedef uint64_t u64; 1.24 @@ -17,9 +31,15 @@ 1.25 1.26 static int LFSR86540(u8 *R) { (*R)=((*R)<<1)^(((*R)&0x80)?0x71:0); return ((*R)&2)>>1; } 1.27 #define ROL(a,o) ((((u64)a)<<o)^(((u64)a)>>(64-o))) 1.28 +#ifdef MOONHASH_LITTLE_ENDIAN 1.29 +#define load64(src) (*(uint64_t *)(src)) 1.30 +#define store64(dst, src) do { *(uint64_t *)(dst) = src; } while (0) 1.31 +#define xor64(dst, src) do { *(uint64_t *)(dst) ^= src; } while (0) 1.32 +#else 1.33 static u64 load64(const u8 *x) { ui i; u64 u=0; FOR(i,8) { u<<=8; u|=x[7-i]; } return u; } 1.34 static void store64(u8 *x, u64 u) { ui i; FOR(i,8) { x[i]=u; u>>=8; } } 1.35 static void xor64(u8 *x, u64 u) { ui i; FOR(i,8) { x[i]^=u; u>>=8; } } 1.36 +#endif 1.37 #define rL(x,y) load64((u8*)s+8*(x+5*y)) 1.38 #define wL(x,y,l) store64((u8*)s+8*(x+5*y),l) 1.39 #define XL(x,y,l) xor64((u8*)s+8*(x+5*y),l)