1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/security/nss/lib/freebl/sha_fast.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,171 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef _SHA_FAST_H_
1.9 +#define _SHA_FAST_H_
1.10 +
1.11 +#include "prlong.h"
1.12 +
1.13 +#define SHA1_INPUT_LEN 64
1.14 +
1.15 +#if defined(IS_64) && !defined(__sparc)
1.16 +typedef PRUint64 SHA_HW_t;
1.17 +#define SHA1_USING_64_BIT 1
1.18 +#else
1.19 +typedef PRUint32 SHA_HW_t;
1.20 +#endif
1.21 +
1.22 +struct SHA1ContextStr {
1.23 + union {
1.24 + PRUint32 w[16]; /* input buffer */
1.25 + PRUint8 b[64];
1.26 + } u;
1.27 + PRUint64 size; /* count of hashed bytes. */
1.28 + SHA_HW_t H[22]; /* 5 state variables, 16 tmp values, 1 extra */
1.29 +};
1.30 +
1.31 +#if defined(_MSC_VER)
1.32 +#include <stdlib.h>
1.33 +#if defined(IS_LITTLE_ENDIAN)
1.34 +#if (_MSC_VER >= 1300)
1.35 +#pragma intrinsic(_byteswap_ulong)
1.36 +#define SHA_HTONL(x) _byteswap_ulong(x)
1.37 +#elif defined(NSS_X86_OR_X64)
1.38 +#ifndef FORCEINLINE
1.39 +#if (_MSC_VER >= 1200)
1.40 +#define FORCEINLINE __forceinline
1.41 +#else
1.42 +#define FORCEINLINE __inline
1.43 +#endif /* _MSC_VER */
1.44 +#endif /* !defined FORCEINLINE */
1.45 +#define FASTCALL __fastcall
1.46 +
1.47 +static FORCEINLINE PRUint32 FASTCALL
1.48 +swap4b(PRUint32 dwd)
1.49 +{
1.50 + __asm {
1.51 + mov eax,dwd
1.52 + bswap eax
1.53 + }
1.54 +}
1.55 +
1.56 +#define SHA_HTONL(x) swap4b(x)
1.57 +#endif /* NSS_X86_OR_X64 */
1.58 +#endif /* IS_LITTLE_ENDIAN */
1.59 +
1.60 +#pragma intrinsic (_lrotr, _lrotl)
1.61 +#define SHA_ROTL(x,n) _lrotl(x,n)
1.62 +#define SHA_ROTL_IS_DEFINED 1
1.63 +#endif /* _MSC_VER */
1.64 +
1.65 +#if defined(__GNUC__)
1.66 +/* __x86_64__ and __x86_64 are defined by GCC on x86_64 CPUs */
1.67 +#if defined( SHA1_USING_64_BIT )
1.68 +static __inline__ PRUint64 SHA_ROTL(PRUint64 x, PRUint32 n)
1.69 +{
1.70 + PRUint32 t = (PRUint32)x;
1.71 + return ((t << n) | (t >> (32 - n)));
1.72 +}
1.73 +#else
1.74 +static __inline__ PRUint32 SHA_ROTL(PRUint32 t, PRUint32 n)
1.75 +{
1.76 + return ((t << n) | (t >> (32 - n)));
1.77 +}
1.78 +#endif
1.79 +#define SHA_ROTL_IS_DEFINED 1
1.80 +
1.81 +#if defined(NSS_X86_OR_X64)
1.82 +static __inline__ PRUint32 swap4b(PRUint32 value)
1.83 +{
1.84 + __asm__("bswap %0" : "+r" (value));
1.85 + return (value);
1.86 +}
1.87 +#define SHA_HTONL(x) swap4b(x)
1.88 +
1.89 +#elif defined(__thumb2__) || \
1.90 + (!defined(__thumb__) && \
1.91 + (defined(__ARM_ARCH_6__) || \
1.92 + defined(__ARM_ARCH_6J__) || \
1.93 + defined(__ARM_ARCH_6K__) || \
1.94 + defined(__ARM_ARCH_6Z__) || \
1.95 + defined(__ARM_ARCH_6ZK__) || \
1.96 + defined(__ARM_ARCH_6T2__) || \
1.97 + defined(__ARM_ARCH_7__) || \
1.98 + defined(__ARM_ARCH_7A__) || \
1.99 + defined(__ARM_ARCH_7R__)))
1.100 +static __inline__ PRUint32 swap4b(PRUint32 value)
1.101 +{
1.102 + PRUint32 ret;
1.103 + __asm__("rev %0, %1" : "=r" (ret) : "r"(value));
1.104 + return ret;
1.105 +}
1.106 +#define SHA_HTONL(x) swap4b(x)
1.107 +
1.108 +#endif /* x86 family */
1.109 +
1.110 +#endif /* __GNUC__ */
1.111 +
1.112 +#if !defined(SHA_ROTL_IS_DEFINED)
1.113 +#define SHA_NEED_TMP_VARIABLE 1
1.114 +#define SHA_ROTL(X,n) (tmp = (X), ((tmp) << (n)) | ((tmp) >> (32-(n))))
1.115 +#endif
1.116 +
1.117 +#if defined(NSS_X86_OR_X64)
1.118 +#define SHA_ALLOW_UNALIGNED_ACCESS 1
1.119 +#endif
1.120 +
1.121 +#if !defined(SHA_HTONL)
1.122 +#define SHA_MASK 0x00FF00FF
1.123 +#if defined(IS_LITTLE_ENDIAN)
1.124 +#undef SHA_NEED_TMP_VARIABLE
1.125 +#define SHA_NEED_TMP_VARIABLE 1
1.126 +#define SHA_HTONL(x) (tmp = (x), tmp = (tmp << 16) | (tmp >> 16), \
1.127 + ((tmp & SHA_MASK) << 8) | ((tmp >> 8) & SHA_MASK))
1.128 +#else
1.129 +#define SHA_HTONL(x) (x)
1.130 +#endif
1.131 +#endif
1.132 +
1.133 +#define SHA_BYTESWAP(x) x = SHA_HTONL(x)
1.134 +
1.135 +#define SHA_STORE(n) ((PRUint32*)hashout)[n] = SHA_HTONL(ctx->H[n])
1.136 +#if defined(SHA_ALLOW_UNALIGNED_ACCESS)
1.137 +#define SHA_STORE_RESULT \
1.138 + SHA_STORE(0); \
1.139 + SHA_STORE(1); \
1.140 + SHA_STORE(2); \
1.141 + SHA_STORE(3); \
1.142 + SHA_STORE(4);
1.143 +
1.144 +#elif defined(IS_LITTLE_ENDIAN) || defined( SHA1_USING_64_BIT )
1.145 +#define SHA_STORE_RESULT \
1.146 + if (!((ptrdiff_t)hashout % sizeof(PRUint32))) { \
1.147 + SHA_STORE(0); \
1.148 + SHA_STORE(1); \
1.149 + SHA_STORE(2); \
1.150 + SHA_STORE(3); \
1.151 + SHA_STORE(4); \
1.152 + } else { \
1.153 + tmpbuf[0] = SHA_HTONL(ctx->H[0]); \
1.154 + tmpbuf[1] = SHA_HTONL(ctx->H[1]); \
1.155 + tmpbuf[2] = SHA_HTONL(ctx->H[2]); \
1.156 + tmpbuf[3] = SHA_HTONL(ctx->H[3]); \
1.157 + tmpbuf[4] = SHA_HTONL(ctx->H[4]); \
1.158 + memcpy(hashout, tmpbuf, SHA1_LENGTH); \
1.159 + }
1.160 +
1.161 +#else
1.162 +#define SHA_STORE_RESULT \
1.163 + if (!((ptrdiff_t)hashout % sizeof(PRUint32))) { \
1.164 + SHA_STORE(0); \
1.165 + SHA_STORE(1); \
1.166 + SHA_STORE(2); \
1.167 + SHA_STORE(3); \
1.168 + SHA_STORE(4); \
1.169 + } else { \
1.170 + memcpy(hashout, ctx->H, SHA1_LENGTH); \
1.171 + }
1.172 +#endif
1.173 +
1.174 +#endif /* _SHA_FAST_H_ */
