/* | |
* Copyright 2012 The LibYuv Project Authors. All rights reserved. | |
* | |
* Use of this source code is governed by a BSD-style license | |
* that can be found in the LICENSE file in the root of the source | |
* tree. An additional intellectual property rights grant can be found | |
* in the file PATENTS. All contributing project authors may | |
* be found in the AUTHORS file in the root of the source tree. | |
*/ | |
#include "libyuv/basic_types.h" | |
#include "libyuv/row.h" | |
#ifdef __cplusplus | |
namespace libyuv { | |
extern "C" { | |
#endif | |
#if !defined(LIBYUV_DISABLE_X86) && (defined(__x86_64__) || defined(__i386__)) | |
uint32 SumSquareError_SSE2(const uint8* src_a, const uint8* src_b, int count) { | |
uint32 sse; | |
asm volatile ( | |
"pxor %%xmm0,%%xmm0 \n" | |
"pxor %%xmm5,%%xmm5 \n" | |
"sub %0,%1 \n" | |
".p2align 4 \n" | |
"1: \n" | |
"movdqa (%0),%%xmm1 \n" | |
"movdqa (%0,%1,1),%%xmm2 \n" | |
"lea 0x10(%0),%0 \n" | |
"sub $0x10,%2 \n" | |
"movdqa %%xmm1,%%xmm3 \n" | |
"psubusb %%xmm2,%%xmm1 \n" | |
"psubusb %%xmm3,%%xmm2 \n" | |
"por %%xmm2,%%xmm1 \n" | |
"movdqa %%xmm1,%%xmm2 \n" | |
"punpcklbw %%xmm5,%%xmm1 \n" | |
"punpckhbw %%xmm5,%%xmm2 \n" | |
"pmaddwd %%xmm1,%%xmm1 \n" | |
"pmaddwd %%xmm2,%%xmm2 \n" | |
"paddd %%xmm1,%%xmm0 \n" | |
"paddd %%xmm2,%%xmm0 \n" | |
"jg 1b \n" | |
"pshufd $0xee,%%xmm0,%%xmm1 \n" | |
"paddd %%xmm1,%%xmm0 \n" | |
"pshufd $0x1,%%xmm0,%%xmm1 \n" | |
"paddd %%xmm1,%%xmm0 \n" | |
"movd %%xmm0,%3 \n" | |
: "+r"(src_a), // %0 | |
"+r"(src_b), // %1 | |
"+r"(count), // %2 | |
"=g"(sse) // %3 | |
: | |
: "memory", "cc" | |
#if defined(__SSE2__) | |
, "xmm0", "xmm1", "xmm2", "xmm3", "xmm5" | |
#endif | |
); | |
return sse; | |
} | |
#endif // defined(__x86_64__) || defined(__i386__) | |
#if !defined(LIBYUV_DISABLE_X86) && \ | |
(defined(__x86_64__) || (defined(__i386__) && !defined(__pic__))) | |
// GCC 4.2 on OSX has link error when passing static or const to inline. | |
// TODO(fbarchard): Use static const when gcc 4.2 support is dropped. | |
#ifdef __APPLE__ | |
#define CONST | |
#else | |
#define CONST static const | |
#endif | |
#define HAS_HASHDJB2_SSE41 | |
CONST uvec32 kHash16x33 = { 0x92d9e201, 0, 0, 0 }; // 33 ^ 16 | |
CONST uvec32 kHashMul0 = { | |
0x0c3525e1, // 33 ^ 15 | |
0xa3476dc1, // 33 ^ 14 | |
0x3b4039a1, // 33 ^ 13 | |
0x4f5f0981, // 33 ^ 12 | |
}; | |
CONST uvec32 kHashMul1 = { | |
0x30f35d61, // 33 ^ 11 | |
0x855cb541, // 33 ^ 10 | |
0x040a9121, // 33 ^ 9 | |
0x747c7101, // 33 ^ 8 | |
}; | |
CONST uvec32 kHashMul2 = { | |
0xec41d4e1, // 33 ^ 7 | |
0x4cfa3cc1, // 33 ^ 6 | |
0x025528a1, // 33 ^ 5 | |
0x00121881, // 33 ^ 4 | |
}; | |
CONST uvec32 kHashMul3 = { | |
0x00008c61, // 33 ^ 3 | |
0x00000441, // 33 ^ 2 | |
0x00000021, // 33 ^ 1 | |
0x00000001, // 33 ^ 0 | |
}; | |
uint32 HashDjb2_SSE41(const uint8* src, int count, uint32 seed) { | |
uint32 hash; | |
asm volatile ( | |
"movd %2,%%xmm0 \n" | |
"pxor %%xmm7,%%xmm7 \n" | |
"movdqa %4,%%xmm6 \n" | |
".p2align 4 \n" | |
"1: \n" | |
"movdqu (%0),%%xmm1 \n" | |
"lea 0x10(%0),%0 \n" | |
"pmulld %%xmm6,%%xmm0 \n" | |
"movdqa %5,%%xmm5 \n" | |
"movdqa %%xmm1,%%xmm2 \n" | |
"punpcklbw %%xmm7,%%xmm2 \n" | |
"movdqa %%xmm2,%%xmm3 \n" | |
"punpcklwd %%xmm7,%%xmm3 \n" | |
"pmulld %%xmm5,%%xmm3 \n" | |
"movdqa %6,%%xmm5 \n" | |
"movdqa %%xmm2,%%xmm4 \n" | |
"punpckhwd %%xmm7,%%xmm4 \n" | |
"pmulld %%xmm5,%%xmm4 \n" | |
"movdqa %7,%%xmm5 \n" | |
"punpckhbw %%xmm7,%%xmm1 \n" | |
"movdqa %%xmm1,%%xmm2 \n" | |
"punpcklwd %%xmm7,%%xmm2 \n" | |
"pmulld %%xmm5,%%xmm2 \n" | |
"movdqa %8,%%xmm5 \n" | |
"punpckhwd %%xmm7,%%xmm1 \n" | |
"pmulld %%xmm5,%%xmm1 \n" | |
"paddd %%xmm4,%%xmm3 \n" | |
"paddd %%xmm2,%%xmm1 \n" | |
"sub $0x10,%1 \n" | |
"paddd %%xmm3,%%xmm1 \n" | |
"pshufd $0xe,%%xmm1,%%xmm2 \n" | |
"paddd %%xmm2,%%xmm1 \n" | |
"pshufd $0x1,%%xmm1,%%xmm2 \n" | |
"paddd %%xmm2,%%xmm1 \n" | |
"paddd %%xmm1,%%xmm0 \n" | |
"jg 1b \n" | |
"movd %%xmm0,%3 \n" | |
: "+r"(src), // %0 | |
"+r"(count), // %1 | |
"+rm"(seed), // %2 | |
"=g"(hash) // %3 | |
: "m"(kHash16x33), // %4 | |
"m"(kHashMul0), // %5 | |
"m"(kHashMul1), // %6 | |
"m"(kHashMul2), // %7 | |
"m"(kHashMul3) // %8 | |
: "memory", "cc" | |
#if defined(__SSE2__) | |
, "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7" | |
#endif | |
); | |
return hash; | |
} | |
#endif // defined(__x86_64__) || (defined(__i386__) && !defined(__pic__))) | |
#ifdef __cplusplus | |
} // extern "C" | |
} // namespace libyuv | |
#endif |