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 13 #include "libyuv/compare_row.h" 14 #include "libyuv/row.h" 15 16 #ifdef __cplusplus 17 namespace libyuv { 18 extern "C" { 19 #endif 20 21 // This module is for GCC x86 and x64. 22 #if !defined(LIBYUV_DISABLE_X86) && \ 23 (defined(__x86_64__) || (defined(__i386__) && !defined(_MSC_VER))) 24 25 uint32 SumSquareError_SSE2(const uint8* src_a, const uint8* src_b, int count) { 26 uint32 sse; 27 asm volatile ( 28 "pxor %%xmm0,%%xmm0 \n" 29 "pxor %%xmm5,%%xmm5 \n" 30 LABELALIGN 31 "1: \n" 32 "movdqu " MEMACCESS(0) ",%%xmm1 \n" 33 "lea " MEMLEA(0x10, 0) ",%0 \n" 34 "movdqu " MEMACCESS(1) ",%%xmm2 \n" 35 "lea " MEMLEA(0x10, 1) ",%1 \n" 36 "movdqa %%xmm1,%%xmm3 \n" 37 "psubusb %%xmm2,%%xmm1 \n" 38 "psubusb %%xmm3,%%xmm2 \n" 39 "por %%xmm2,%%xmm1 \n" 40 "movdqa %%xmm1,%%xmm2 \n" 41 "punpcklbw %%xmm5,%%xmm1 \n" 42 "punpckhbw %%xmm5,%%xmm2 \n" 43 "pmaddwd %%xmm1,%%xmm1 \n" 44 "pmaddwd %%xmm2,%%xmm2 \n" 45 "paddd %%xmm1,%%xmm0 \n" 46 "paddd %%xmm2,%%xmm0 \n" 47 "sub $0x10,%2 \n" 48 "jg 1b \n" 49 50 "pshufd $0xee,%%xmm0,%%xmm1 \n" 51 "paddd %%xmm1,%%xmm0 \n" 52 "pshufd $0x1,%%xmm0,%%xmm1 \n" 53 "paddd %%xmm1,%%xmm0 \n" 54 "movd %%xmm0,%3 \n" 55 56 : "+r"(src_a), // %0 57 "+r"(src_b), // %1 58 "+r"(count), // %2 59 "=g"(sse) // %3 60 :: "memory", "cc", "xmm0", "xmm1", "xmm2", "xmm3", "xmm5" 61 ); 62 return sse; 63 } 64 65 static uvec32 kHash16x33 = {0x92d9e201, 0, 0, 0}; // 33 ^ 16 66 static uvec32 kHashMul0 = { 67 0x0c3525e1, // 33 ^ 15 68 0xa3476dc1, // 33 ^ 14 69 0x3b4039a1, // 33 ^ 13 70 0x4f5f0981, // 33 ^ 12 71 }; 72 static uvec32 kHashMul1 = { 73 0x30f35d61, // 33 ^ 11 74 0x855cb541, // 33 ^ 10 75 0x040a9121, // 33 ^ 9 76 0x747c7101, // 33 ^ 8 77 }; 78 static uvec32 kHashMul2 = { 79 0xec41d4e1, // 33 ^ 7 80 0x4cfa3cc1, // 33 ^ 6 81 0x025528a1, // 33 ^ 5 82 0x00121881, // 33 ^ 4 83 }; 84 static uvec32 kHashMul3 = { 85 0x00008c61, // 33 ^ 3 86 0x00000441, // 33 ^ 2 87 0x00000021, // 33 ^ 1 88 0x00000001, // 33 ^ 0 89 }; 90 91 uint32 HashDjb2_SSE41(const uint8* src, int count, uint32 seed) { 92 uint32 hash; 93 asm volatile ( 94 "movd %2,%%xmm0 \n" 95 "pxor %%xmm7,%%xmm7 \n" 96 "movdqa %4,%%xmm6 \n" 97 LABELALIGN 98 "1: \n" 99 "movdqu " MEMACCESS(0) ",%%xmm1 \n" 100 "lea " MEMLEA(0x10, 0) ",%0 \n" 101 "pmulld %%xmm6,%%xmm0 \n" 102 "movdqa %5,%%xmm5 \n" 103 "movdqa %%xmm1,%%xmm2 \n" 104 "punpcklbw %%xmm7,%%xmm2 \n" 105 "movdqa %%xmm2,%%xmm3 \n" 106 "punpcklwd %%xmm7,%%xmm3 \n" 107 "pmulld %%xmm5,%%xmm3 \n" 108 "movdqa %6,%%xmm5 \n" 109 "movdqa %%xmm2,%%xmm4 \n" 110 "punpckhwd %%xmm7,%%xmm4 \n" 111 "pmulld %%xmm5,%%xmm4 \n" 112 "movdqa %7,%%xmm5 \n" 113 "punpckhbw %%xmm7,%%xmm1 \n" 114 "movdqa %%xmm1,%%xmm2 \n" 115 "punpcklwd %%xmm7,%%xmm2 \n" 116 "pmulld %%xmm5,%%xmm2 \n" 117 "movdqa %8,%%xmm5 \n" 118 "punpckhwd %%xmm7,%%xmm1 \n" 119 "pmulld %%xmm5,%%xmm1 \n" 120 "paddd %%xmm4,%%xmm3 \n" 121 "paddd %%xmm2,%%xmm1 \n" 122 "paddd %%xmm3,%%xmm1 \n" 123 "pshufd $0xe,%%xmm1,%%xmm2 \n" 124 "paddd %%xmm2,%%xmm1 \n" 125 "pshufd $0x1,%%xmm1,%%xmm2 \n" 126 "paddd %%xmm2,%%xmm1 \n" 127 "paddd %%xmm1,%%xmm0 \n" 128 "sub $0x10,%1 \n" 129 "jg 1b \n" 130 "movd %%xmm0,%3 \n" 131 : "+r"(src), // %0 132 "+r"(count), // %1 133 "+rm"(seed), // %2 134 "=g"(hash) // %3 135 : "m"(kHash16x33), // %4 136 "m"(kHashMul0), // %5 137 "m"(kHashMul1), // %6 138 "m"(kHashMul2), // %7 139 "m"(kHashMul3) // %8 140 : "memory", "cc" 141 , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7" 142 ); 143 return hash; 144 } 145 #endif // defined(__x86_64__) || (defined(__i386__) && !defined(__pic__))) 146 147 #ifdef __cplusplus 148 } // extern "C" 149 } // namespace libyuv 150 #endif 151
