1 /* 2 * Copyright 2012 The LibYuv Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "libyuv/basic_types.h" 12 #include "libyuv/row.h" 13 14 #ifdef __cplusplus 15 namespace libyuv { 16 extern "C" { 17 #endif 18 19 #if !defined(LIBYUV_DISABLE_X86) && (defined(__x86_64__) || defined(__i386__)) 20 21 uint32 SumSquareError_SSE2(const uint8* src_a, const uint8* src_b, int count) { 22 uint32 sse; 23 asm volatile ( // NOLINT 24 "pxor %%xmm0,%%xmm0 \n" 25 "pxor %%xmm5,%%xmm5 \n" 26 LABELALIGN 27 "1: \n" 28 "movdqa " MEMACCESS(0) ",%%xmm1 \n" 29 "lea " MEMLEA(0x10, 0) ",%0 \n" 30 "movdqa " MEMACCESS(1) ",%%xmm2 \n" 31 "lea " MEMLEA(0x10, 1) ",%1 \n" 32 "sub $0x10,%2 \n" 33 "movdqa %%xmm1,%%xmm3 \n" 34 "psubusb %%xmm2,%%xmm1 \n" 35 "psubusb %%xmm3,%%xmm2 \n" 36 "por %%xmm2,%%xmm1 \n" 37 "movdqa %%xmm1,%%xmm2 \n" 38 "punpcklbw %%xmm5,%%xmm1 \n" 39 "punpckhbw %%xmm5,%%xmm2 \n" 40 "pmaddwd %%xmm1,%%xmm1 \n" 41 "pmaddwd %%xmm2,%%xmm2 \n" 42 "paddd %%xmm1,%%xmm0 \n" 43 "paddd %%xmm2,%%xmm0 \n" 44 "jg 1b \n" 45 46 "pshufd $0xee,%%xmm0,%%xmm1 \n" 47 "paddd %%xmm1,%%xmm0 \n" 48 "pshufd $0x1,%%xmm0,%%xmm1 \n" 49 "paddd %%xmm1,%%xmm0 \n" 50 "movd %%xmm0,%3 \n" 51 52 : "+r"(src_a), // %0 53 "+r"(src_b), // %1 54 "+r"(count), // %2 55 "=g"(sse) // %3 56 : 57 : "memory", "cc" 58 #if defined(__SSE2__) 59 , "xmm0", "xmm1", "xmm2", "xmm3", "xmm5" 60 #endif 61 ); // NOLINT 62 return sse; 63 } 64 65 #endif // defined(__x86_64__) || defined(__i386__) 66 67 #if !defined(LIBYUV_DISABLE_X86) && \ 68 (defined(__x86_64__) || (defined(__i386__) && !defined(__pic__))) 69 #define HAS_HASHDJB2_SSE41 70 static uvec32 kHash16x33 = { 0x92d9e201, 0, 0, 0 }; // 33 ^ 16 71 static uvec32 kHashMul0 = { 72 0x0c3525e1, // 33 ^ 15 73 0xa3476dc1, // 33 ^ 14 74 0x3b4039a1, // 33 ^ 13 75 0x4f5f0981, // 33 ^ 12 76 }; 77 static uvec32 kHashMul1 = { 78 0x30f35d61, // 33 ^ 11 79 0x855cb541, // 33 ^ 10 80 0x040a9121, // 33 ^ 9 81 0x747c7101, // 33 ^ 8 82 }; 83 static uvec32 kHashMul2 = { 84 0xec41d4e1, // 33 ^ 7 85 0x4cfa3cc1, // 33 ^ 6 86 0x025528a1, // 33 ^ 5 87 0x00121881, // 33 ^ 4 88 }; 89 static uvec32 kHashMul3 = { 90 0x00008c61, // 33 ^ 3 91 0x00000441, // 33 ^ 2 92 0x00000021, // 33 ^ 1 93 0x00000001, // 33 ^ 0 94 }; 95 96 uint32 HashDjb2_SSE41(const uint8* src, int count, uint32 seed) { 97 uint32 hash; 98 asm volatile ( // NOLINT 99 "movd %2,%%xmm0 \n" 100 "pxor %%xmm7,%%xmm7 \n" 101 "movdqa %4,%%xmm6 \n" 102 LABELALIGN 103 "1: \n" 104 "movdqu " MEMACCESS(0) ",%%xmm1 \n" 105 "lea " MEMLEA(0x10, 0) ",%0 \n" 106 "pmulld %%xmm6,%%xmm0 \n" 107 "movdqa %5,%%xmm5 \n" 108 "movdqa %%xmm1,%%xmm2 \n" 109 "punpcklbw %%xmm7,%%xmm2 \n" 110 "movdqa %%xmm2,%%xmm3 \n" 111 "punpcklwd %%xmm7,%%xmm3 \n" 112 "pmulld %%xmm5,%%xmm3 \n" 113 "movdqa %6,%%xmm5 \n" 114 "movdqa %%xmm2,%%xmm4 \n" 115 "punpckhwd %%xmm7,%%xmm4 \n" 116 "pmulld %%xmm5,%%xmm4 \n" 117 "movdqa %7,%%xmm5 \n" 118 "punpckhbw %%xmm7,%%xmm1 \n" 119 "movdqa %%xmm1,%%xmm2 \n" 120 "punpcklwd %%xmm7,%%xmm2 \n" 121 "pmulld %%xmm5,%%xmm2 \n" 122 "movdqa %8,%%xmm5 \n" 123 "punpckhwd %%xmm7,%%xmm1 \n" 124 "pmulld %%xmm5,%%xmm1 \n" 125 "paddd %%xmm4,%%xmm3 \n" 126 "paddd %%xmm2,%%xmm1 \n" 127 "sub $0x10,%1 \n" 128 "paddd %%xmm3,%%xmm1 \n" 129 "pshufd $0xe,%%xmm1,%%xmm2 \n" 130 "paddd %%xmm2,%%xmm1 \n" 131 "pshufd $0x1,%%xmm1,%%xmm2 \n" 132 "paddd %%xmm2,%%xmm1 \n" 133 "paddd %%xmm1,%%xmm0 \n" 134 "jg 1b \n" 135 "movd %%xmm0,%3 \n" 136 : "+r"(src), // %0 137 "+r"(count), // %1 138 "+rm"(seed), // %2 139 "=g"(hash) // %3 140 : "m"(kHash16x33), // %4 141 "m"(kHashMul0), // %5 142 "m"(kHashMul1), // %6 143 "m"(kHashMul2), // %7 144 "m"(kHashMul3) // %8 145 : "memory", "cc" 146 #if defined(__SSE2__) 147 , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7" 148 #endif 149 ); // NOLINT 150 return hash; 151 } 152 #endif // defined(__x86_64__) || (defined(__i386__) && !defined(__pic__))) 153 154 #ifdef __cplusplus 155 } // extern "C" 156 } // namespace libyuv 157 #endif 158 159
