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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #ifndef _SHA_FAST_H_ | |
| 6 #define _SHA_FAST_H_ | |
| 7 | |
| 8 #include "prlong.h" | |
| 9 | |
| 10 #define SHA1_INPUT_LEN 64 | |
| 11 | |
| 12 #if defined(IS_64) && !defined(__sparc) | |
| 13 typedef PRUint64 SHA_HW_t; | |
| 14 #define SHA1_USING_64_BIT 1 | |
| 15 #else | |
| 16 typedef PRUint32 SHA_HW_t; | |
| 17 #endif | |
| 18 | |
| 19 struct SHA1ContextStr { | |
| 20 union { | |
| 21 PRUint32 w[16]; /* input buffer */ | |
| 22 PRUint8 b[64]; | |
| 23 } u; | |
| 24 PRUint64 size; /* count of hashed bytes. */ | |
| 25 SHA_HW_t H[22]; /* 5 state variables, 16 tmp values, 1 extra */ | |
| 26 }; | |
| 27 | |
| 28 #if defined(_MSC_VER) | |
| 29 #include <stdlib.h> | |
| 30 #if defined(IS_LITTLE_ENDIAN) | |
| 31 #if (_MSC_VER >= 1300) | |
| 32 #pragma intrinsic(_byteswap_ulong) | |
| 33 #define SHA_HTONL(x) _byteswap_ulong(x) | |
| 34 #elif defined(NSS_X86_OR_X64) | |
| 35 #ifndef FORCEINLINE | |
| 36 #if (_MSC_VER >= 1200) | |
| 37 #define FORCEINLINE __forceinline | |
| 38 #else | |
| 39 #define FORCEINLINE __inline | |
| 40 #endif /* _MSC_VER */ | |
| 41 #endif /* !defined FORCEINLINE */ | |
| 42 #define FASTCALL __fastcall | |
| 43 | |
| 44 static FORCEINLINE PRUint32 FASTCALL | |
| 45 swap4b(PRUint32 dwd) | |
| 46 { | |
| 47 __asm { | |
| 48 mov eax,dwd | |
| 49 bswap eax | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 #define SHA_HTONL(x) swap4b(x) | |
| 54 #endif /* NSS_X86_OR_X64 */ | |
| 55 #endif /* IS_LITTLE_ENDIAN */ | |
| 56 | |
| 57 #pragma intrinsic (_lrotr, _lrotl) | |
| 58 #define SHA_ROTL(x,n) _lrotl(x,n) | |
| 59 #define SHA_ROTL_IS_DEFINED 1 | |
| 60 #endif /* _MSC_VER */ | |
| 61 | |
| 62 #if defined(__GNUC__) | |
| 63 /* __x86_64__ and __x86_64 are defined by GCC on x86_64 CPUs */ | |
| 64 #if defined( SHA1_USING_64_BIT ) | |
| 65 static __inline__ PRUint64 SHA_ROTL(PRUint64 x, PRUint32 n) | |
| 66 { | |
| 67 PRUint32 t = (PRUint32)x; | |
| 68 return ((t << n) | (t >> (32 - n))); | |
| 69 } | |
| 70 #else | |
| 71 static __inline__ PRUint32 SHA_ROTL(PRUint32 t, PRUint32 n) | |
| 72 { | |
| 73 return ((t << n) | (t >> (32 - n))); | |
| 74 } | |
| 75 #endif | |
| 76 #define SHA_ROTL_IS_DEFINED 1 | |
| 77 | |
| 78 #if defined(NSS_X86_OR_X64) | |
| 79 static __inline__ PRUint32 swap4b(PRUint32 value) | |
| 80 { | |
| 81 __asm__("bswap %0" : "+r" (value)); | |
| 82 return (value); | |
| 83 } | |
| 84 #define SHA_HTONL(x) swap4b(x) | |
| 85 | |
| 86 #elif defined(__thumb2__) || \ | |
| 87 (!defined(__thumb__) && \ | |
| 88 (defined(__ARM_ARCH_6__) || \ | |
| 89 defined(__ARM_ARCH_6J__) || \ | |
| 90 defined(__ARM_ARCH_6K__) || \ | |
| 91 defined(__ARM_ARCH_6Z__) || \ | |
| 92 defined(__ARM_ARCH_6ZK__) || \ | |
| 93 defined(__ARM_ARCH_6T2__) || \ | |
| 94 defined(__ARM_ARCH_7__) || \ | |
| 95 defined(__ARM_ARCH_7A__) || \ | |
| 96 defined(__ARM_ARCH_7R__))) | |
| 97 static __inline__ PRUint32 swap4b(PRUint32 value) | |
| 98 { | |
| 99 PRUint32 ret; | |
| 100 __asm__("rev %0, %1" : "=r" (ret) : "r"(value)); | |
| 101 return ret; | |
| 102 } | |
| 103 #define SHA_HTONL(x) swap4b(x) | |
| 104 | |
| 105 #endif /* x86 family */ | |
| 106 | |
| 107 #endif /* __GNUC__ */ | |
| 108 | |
| 109 #if !defined(SHA_ROTL_IS_DEFINED) | |
| 110 #define SHA_NEED_TMP_VARIABLE 1 | |
| 111 #define SHA_ROTL(X,n) (tmp = (X), ((tmp) << (n)) | ((tmp) >> (32-(n)))) | |
| 112 #endif | |
| 113 | |
| 114 #if defined(NSS_X86_OR_X64) | |
| 115 #define SHA_ALLOW_UNALIGNED_ACCESS 1 | |
| 116 #endif | |
| 117 | |
| 118 #if !defined(SHA_HTONL) | |
| 119 #define SHA_MASK 0x00FF00FF | |
| 120 #if defined(IS_LITTLE_ENDIAN) | |
| 121 #undef SHA_NEED_TMP_VARIABLE | |
| 122 #define SHA_NEED_TMP_VARIABLE 1 | |
| 123 #define SHA_HTONL(x) (tmp = (x), tmp = (tmp << 16) | (tmp >> 16), \ | |
| 124 ((tmp & SHA_MASK) << 8) | ((tmp >> 8) & SHA_MASK)) | |
| 125 #else | |
| 126 #define SHA_HTONL(x) (x) | |
| 127 #endif | |
| 128 #endif | |
| 129 | |
| 130 #define SHA_BYTESWAP(x) x = SHA_HTONL(x) | |
| 131 | |
| 132 #define SHA_STORE(n) ((PRUint32*)hashout)[n] = SHA_HTONL(ctx->H[n]) | |
| 133 #if defined(SHA_ALLOW_UNALIGNED_ACCESS) | |
| 134 #define SHA_STORE_RESULT \ | |
| 135 SHA_STORE(0); \ | |
| 136 SHA_STORE(1); \ | |
| 137 SHA_STORE(2); \ | |
| 138 SHA_STORE(3); \ | |
| 139 SHA_STORE(4); | |
| 140 | |
| 141 #elif defined(IS_LITTLE_ENDIAN) || defined( SHA1_USING_64_BIT ) | |
| 142 #define SHA_STORE_RESULT \ | |
| 143 if (!((ptrdiff_t)hashout % sizeof(PRUint32))) { \ | |
| 144 SHA_STORE(0); \ | |
| 145 SHA_STORE(1); \ | |
| 146 SHA_STORE(2); \ | |
| 147 SHA_STORE(3); \ | |
| 148 SHA_STORE(4); \ | |
| 149 } else { \ | |
| 150 PRUint32 tmpbuf[5]; \ | |
| 151 tmpbuf[0] = SHA_HTONL(ctx->H[0]); \ | |
| 152 tmpbuf[1] = SHA_HTONL(ctx->H[1]); \ | |
| 153 tmpbuf[2] = SHA_HTONL(ctx->H[2]); \ | |
| 154 tmpbuf[3] = SHA_HTONL(ctx->H[3]); \ | |
| 155 tmpbuf[4] = SHA_HTONL(ctx->H[4]); \ | |
| 156 memcpy(hashout, tmpbuf, SHA1_LENGTH); \ | |
| 157 } | |
| 158 | |
| 159 #else | |
| 160 #define SHA_STORE_RESULT \ | |
| 161 if (!((ptrdiff_t)hashout % sizeof(PRUint32))) { \ | |
| 162 SHA_STORE(0); \ | |
| 163 SHA_STORE(1); \ | |
| 164 SHA_STORE(2); \ | |
| 165 SHA_STORE(3); \ | |
| 166 SHA_STORE(4); \ | |
| 167 } else { \ | |
| 168 memcpy(hashout, ctx->H, SHA1_LENGTH); \ | |
| 169 } | |
| 170 #endif | |
| 171 | |
| 172 #endif /* _SHA_FAST_H_ */ | |
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Chromium Code Reviews
Issue 2078763002:
Delete bundled copy of NSS and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/nss@master