ref: fd22c492f7b53653d5aba22761015297f73031d3
dir: /third_party/libyuv/source/scale_posix.cc/
/*
* Copyright 2013 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/row.h"
#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif
// This module is for GCC x86 and x64.
#if !defined(LIBYUV_DISABLE_X86) && (defined(__x86_64__) || defined(__i386__))
// Offsets for source bytes 0 to 9
static uvec8 kShuf0 =
{ 0, 1, 3, 4, 5, 7, 8, 9, 128, 128, 128, 128, 128, 128, 128, 128 };
// Offsets for source bytes 11 to 20 with 8 subtracted = 3 to 12.
static uvec8 kShuf1 =
{ 3, 4, 5, 7, 8, 9, 11, 12, 128, 128, 128, 128, 128, 128, 128, 128 };
// Offsets for source bytes 21 to 31 with 16 subtracted = 5 to 31.
static uvec8 kShuf2 =
{ 5, 7, 8, 9, 11, 12, 13, 15, 128, 128, 128, 128, 128, 128, 128, 128 };
// Offsets for source bytes 0 to 10
static uvec8 kShuf01 =
{ 0, 1, 1, 2, 2, 3, 4, 5, 5, 6, 6, 7, 8, 9, 9, 10 };
// Offsets for source bytes 10 to 21 with 8 subtracted = 3 to 13.
static uvec8 kShuf11 =
{ 2, 3, 4, 5, 5, 6, 6, 7, 8, 9, 9, 10, 10, 11, 12, 13 };
// Offsets for source bytes 21 to 31 with 16 subtracted = 5 to 31.
static uvec8 kShuf21 =
{ 5, 6, 6, 7, 8, 9, 9, 10, 10, 11, 12, 13, 13, 14, 14, 15 };
// Coefficients for source bytes 0 to 10
static uvec8 kMadd01 =
{ 3, 1, 2, 2, 1, 3, 3, 1, 2, 2, 1, 3, 3, 1, 2, 2 };
// Coefficients for source bytes 10 to 21
static uvec8 kMadd11 =
{ 1, 3, 3, 1, 2, 2, 1, 3, 3, 1, 2, 2, 1, 3, 3, 1 };
// Coefficients for source bytes 21 to 31
static uvec8 kMadd21 =
{ 2, 2, 1, 3, 3, 1, 2, 2, 1, 3, 3, 1, 2, 2, 1, 3 };
// Coefficients for source bytes 21 to 31
static vec16 kRound34 =
{ 2, 2, 2, 2, 2, 2, 2, 2 };
static uvec8 kShuf38a =
{ 0, 3, 6, 8, 11, 14, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 };
static uvec8 kShuf38b =
{ 128, 128, 128, 128, 128, 128, 0, 3, 6, 8, 11, 14, 128, 128, 128, 128 };
// Arrange words 0,3,6 into 0,1,2
static uvec8 kShufAc =
{ 0, 1, 6, 7, 12, 13, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 };
// Arrange words 0,3,6 into 3,4,5
static uvec8 kShufAc3 =
{ 128, 128, 128, 128, 128, 128, 0, 1, 6, 7, 12, 13, 128, 128, 128, 128 };
// Scaling values for boxes of 3x3 and 2x3
static uvec16 kScaleAc33 =
{ 65536 / 9, 65536 / 9, 65536 / 6, 65536 / 9, 65536 / 9, 65536 / 6, 0, 0 };
// Arrange first value for pixels 0,1,2,3,4,5
static uvec8 kShufAb0 =
{ 0, 128, 3, 128, 6, 128, 8, 128, 11, 128, 14, 128, 128, 128, 128, 128 };
// Arrange second value for pixels 0,1,2,3,4,5
static uvec8 kShufAb1 =
{ 1, 128, 4, 128, 7, 128, 9, 128, 12, 128, 15, 128, 128, 128, 128, 128 };
// Arrange third value for pixels 0,1,2,3,4,5
static uvec8 kShufAb2 =
{ 2, 128, 5, 128, 128, 128, 10, 128, 13, 128, 128, 128, 128, 128, 128, 128 };
// Scaling values for boxes of 3x2 and 2x2
static uvec16 kScaleAb2 =
{ 65536 / 3, 65536 / 3, 65536 / 2, 65536 / 3, 65536 / 3, 65536 / 2, 0, 0 };
// GCC versions of row functions are verbatim conversions from Visual C.
// Generated using gcc disassembly on Visual C object file:
// objdump -D yuvscaler.obj >yuvscaler.txt
void ScaleRowDown2_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
asm volatile (
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
"movdqu " MEMACCESS2(0x10,0) ",%%xmm1 \n"
"lea " MEMLEA(0x20,0) ",%0 \n"
"psrlw $0x8,%%xmm0 \n"
"psrlw $0x8,%%xmm1 \n"
"packuswb %%xmm1,%%xmm0 \n"
"movdqu %%xmm0," MEMACCESS(1) " \n"
"lea " MEMLEA(0x10,1) ",%1 \n"
"sub $0x10,%2 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(dst_width) // %2
:: "memory", "cc", "xmm0", "xmm1"
);
}
void ScaleRowDown2Linear_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
asm volatile (
"pcmpeqb %%xmm5,%%xmm5 \n"
"psrlw $0x8,%%xmm5 \n"
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
"movdqu " MEMACCESS2(0x10, 0) ",%%xmm1 \n"
"lea " MEMLEA(0x20,0) ",%0 \n"
"movdqa %%xmm0,%%xmm2 \n"
"psrlw $0x8,%%xmm0 \n"
"movdqa %%xmm1,%%xmm3 \n"
"psrlw $0x8,%%xmm1 \n"
"pand %%xmm5,%%xmm2 \n"
"pand %%xmm5,%%xmm3 \n"
"pavgw %%xmm2,%%xmm0 \n"
"pavgw %%xmm3,%%xmm1 \n"
"packuswb %%xmm1,%%xmm0 \n"
"movdqu %%xmm0," MEMACCESS(1) " \n"
"lea " MEMLEA(0x10,1) ",%1 \n"
"sub $0x10,%2 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(dst_width) // %2
:: "memory", "cc", "xmm0", "xmm1", "xmm5"
);
}
void ScaleRowDown2Box_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
asm volatile (
"pcmpeqb %%xmm5,%%xmm5 \n"
"psrlw $0x8,%%xmm5 \n"
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
"movdqu " MEMACCESS2(0x10,0) ",%%xmm1 \n"
MEMOPREG(movdqu,0x00,0,3,1,xmm2) // movdqu (%0,%3,1),%%xmm2
MEMOPREG(movdqu,0x10,0,3,1,xmm3) // movdqu 0x10(%0,%3,1),%%xmm3
"lea " MEMLEA(0x20,0) ",%0 \n"
"pavgb %%xmm2,%%xmm0 \n"
"pavgb %%xmm3,%%xmm1 \n"
"movdqa %%xmm0,%%xmm2 \n"
"psrlw $0x8,%%xmm0 \n"
"movdqa %%xmm1,%%xmm3 \n"
"psrlw $0x8,%%xmm1 \n"
"pand %%xmm5,%%xmm2 \n"
"pand %%xmm5,%%xmm3 \n"
"pavgw %%xmm2,%%xmm0 \n"
"pavgw %%xmm3,%%xmm1 \n"
"packuswb %%xmm1,%%xmm0 \n"
"movdqu %%xmm0," MEMACCESS(1) " \n"
"lea " MEMLEA(0x10,1) ",%1 \n"
"sub $0x10,%2 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(dst_width) // %2
: "r"((intptr_t)(src_stride)) // %3
: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3", "xmm5"
);
}
void ScaleRowDown4_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
asm volatile (
"pcmpeqb %%xmm5,%%xmm5 \n"
"psrld $0x18,%%xmm5 \n"
"pslld $0x10,%%xmm5 \n"
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
"movdqu " MEMACCESS2(0x10,0) ",%%xmm1 \n"
"lea " MEMLEA(0x20,0) ",%0 \n"
"pand %%xmm5,%%xmm0 \n"
"pand %%xmm5,%%xmm1 \n"
"packuswb %%xmm1,%%xmm0 \n"
"psrlw $0x8,%%xmm0 \n"
"packuswb %%xmm0,%%xmm0 \n"
"movq %%xmm0," MEMACCESS(1) " \n"
"lea " MEMLEA(0x8,1) ",%1 \n"
"sub $0x8,%2 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(dst_width) // %2
:: "memory", "cc", "xmm0", "xmm1", "xmm5"
);
}
void ScaleRowDown4Box_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
intptr_t stridex3 = 0;
asm volatile (
"pcmpeqb %%xmm7,%%xmm7 \n"
"psrlw $0x8,%%xmm7 \n"
"lea " MEMLEA4(0x00,4,4,2) ",%3 \n"
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
"movdqu " MEMACCESS2(0x10,0) ",%%xmm1 \n"
MEMOPREG(movdqu,0x00,0,4,1,xmm2) // movdqu (%0,%4,1),%%xmm2
MEMOPREG(movdqu,0x10,0,4,1,xmm3) // movdqu 0x10(%0,%4,1),%%xmm3
"pavgb %%xmm2,%%xmm0 \n"
"pavgb %%xmm3,%%xmm1 \n"
MEMOPREG(movdqu,0x00,0,4,2,xmm2) // movdqu (%0,%4,2),%%xmm2
MEMOPREG(movdqu,0x10,0,4,2,xmm3) // movdqu 0x10(%0,%4,2),%%xmm3
MEMOPREG(movdqu,0x00,0,3,1,xmm4) // movdqu (%0,%3,1),%%xmm4
MEMOPREG(movdqu,0x10,0,3,1,xmm5) // movdqu 0x10(%0,%3,1),%%xmm5
"lea " MEMLEA(0x20,0) ",%0 \n"
"pavgb %%xmm4,%%xmm2 \n"
"pavgb %%xmm2,%%xmm0 \n"
"pavgb %%xmm5,%%xmm3 \n"
"pavgb %%xmm3,%%xmm1 \n"
"movdqa %%xmm0,%%xmm2 \n"
"psrlw $0x8,%%xmm0 \n"
"movdqa %%xmm1,%%xmm3 \n"
"psrlw $0x8,%%xmm1 \n"
"pand %%xmm7,%%xmm2 \n"
"pand %%xmm7,%%xmm3 \n"
"pavgw %%xmm2,%%xmm0 \n"
"pavgw %%xmm3,%%xmm1 \n"
"packuswb %%xmm1,%%xmm0 \n"
"movdqa %%xmm0,%%xmm2 \n"
"psrlw $0x8,%%xmm0 \n"
"pand %%xmm7,%%xmm2 \n"
"pavgw %%xmm2,%%xmm0 \n"
"packuswb %%xmm0,%%xmm0 \n"
"movq %%xmm0," MEMACCESS(1) " \n"
"lea " MEMLEA(0x8,1) ",%1 \n"
"sub $0x8,%2 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(dst_width), // %2
"+r"(stridex3) // %3
: "r"((intptr_t)(src_stride)) // %4
: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm7"
);
}
void ScaleRowDown34_SSSE3(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
asm volatile (
"movdqa %0,%%xmm3 \n"
"movdqa %1,%%xmm4 \n"
"movdqa %2,%%xmm5 \n"
:
: "m"(kShuf0), // %0
"m"(kShuf1), // %1
"m"(kShuf2) // %2
);
asm volatile (
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
"movdqu " MEMACCESS2(0x10,0) ",%%xmm2 \n"
"lea " MEMLEA(0x20,0) ",%0 \n"
"movdqa %%xmm2,%%xmm1 \n"
"palignr $0x8,%%xmm0,%%xmm1 \n"
"pshufb %%xmm3,%%xmm0 \n"
"pshufb %%xmm4,%%xmm1 \n"
"pshufb %%xmm5,%%xmm2 \n"
"movq %%xmm0," MEMACCESS(1) " \n"
"movq %%xmm1," MEMACCESS2(0x8,1) " \n"
"movq %%xmm2," MEMACCESS2(0x10,1) " \n"
"lea " MEMLEA(0x18,1) ",%1 \n"
"sub $0x18,%2 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(dst_width) // %2
:: "memory", "cc", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5"
);
}
void ScaleRowDown34_1_Box_SSSE3(const uint8* src_ptr,
ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
asm volatile (
"movdqa %0,%%xmm2 \n" // kShuf01
"movdqa %1,%%xmm3 \n" // kShuf11
"movdqa %2,%%xmm4 \n" // kShuf21
:
: "m"(kShuf01), // %0
"m"(kShuf11), // %1
"m"(kShuf21) // %2
);
asm volatile (
"movdqa %0,%%xmm5 \n" // kMadd01
"movdqa %1,%%xmm0 \n" // kMadd11
"movdqa %2,%%xmm1 \n" // kRound34
:
: "m"(kMadd01), // %0
"m"(kMadd11), // %1
"m"(kRound34) // %2
);
asm volatile (
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm6 \n"
MEMOPREG(movdqu,0x00,0,3,1,xmm7) // movdqu (%0,%3),%%xmm7
"pavgb %%xmm7,%%xmm6 \n"
"pshufb %%xmm2,%%xmm6 \n"
"pmaddubsw %%xmm5,%%xmm6 \n"
"paddsw %%xmm1,%%xmm6 \n"
"psrlw $0x2,%%xmm6 \n"
"packuswb %%xmm6,%%xmm6 \n"
"movq %%xmm6," MEMACCESS(1) " \n"
"movdqu " MEMACCESS2(0x8,0) ",%%xmm6 \n"
MEMOPREG(movdqu,0x8,0,3,1,xmm7) // movdqu 0x8(%0,%3),%%xmm7
"pavgb %%xmm7,%%xmm6 \n"
"pshufb %%xmm3,%%xmm6 \n"
"pmaddubsw %%xmm0,%%xmm6 \n"
"paddsw %%xmm1,%%xmm6 \n"
"psrlw $0x2,%%xmm6 \n"
"packuswb %%xmm6,%%xmm6 \n"
"movq %%xmm6," MEMACCESS2(0x8,1) " \n"
"movdqu " MEMACCESS2(0x10,0) ",%%xmm6 \n"
MEMOPREG(movdqu,0x10,0,3,1,xmm7) // movdqu 0x10(%0,%3),%%xmm7
"lea " MEMLEA(0x20,0) ",%0 \n"
"pavgb %%xmm7,%%xmm6 \n"
"pshufb %%xmm4,%%xmm6 \n"
"pmaddubsw %4,%%xmm6 \n"
"paddsw %%xmm1,%%xmm6 \n"
"psrlw $0x2,%%xmm6 \n"
"packuswb %%xmm6,%%xmm6 \n"
"movq %%xmm6," MEMACCESS2(0x10,1) " \n"
"lea " MEMLEA(0x18,1) ",%1 \n"
"sub $0x18,%2 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(dst_width) // %2
: "r"((intptr_t)(src_stride)), // %3
"m"(kMadd21) // %4
: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7"
);
}
void ScaleRowDown34_0_Box_SSSE3(const uint8* src_ptr,
ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
asm volatile (
"movdqa %0,%%xmm2 \n" // kShuf01
"movdqa %1,%%xmm3 \n" // kShuf11
"movdqa %2,%%xmm4 \n" // kShuf21
:
: "m"(kShuf01), // %0
"m"(kShuf11), // %1
"m"(kShuf21) // %2
);
asm volatile (
"movdqa %0,%%xmm5 \n" // kMadd01
"movdqa %1,%%xmm0 \n" // kMadd11
"movdqa %2,%%xmm1 \n" // kRound34
:
: "m"(kMadd01), // %0
"m"(kMadd11), // %1
"m"(kRound34) // %2
);
asm volatile (
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm6 \n"
MEMOPREG(movdqu,0x00,0,3,1,xmm7) // movdqu (%0,%3,1),%%xmm7
"pavgb %%xmm6,%%xmm7 \n"
"pavgb %%xmm7,%%xmm6 \n"
"pshufb %%xmm2,%%xmm6 \n"
"pmaddubsw %%xmm5,%%xmm6 \n"
"paddsw %%xmm1,%%xmm6 \n"
"psrlw $0x2,%%xmm6 \n"
"packuswb %%xmm6,%%xmm6 \n"
"movq %%xmm6," MEMACCESS(1) " \n"
"movdqu " MEMACCESS2(0x8,0) ",%%xmm6 \n"
MEMOPREG(movdqu,0x8,0,3,1,xmm7) // movdqu 0x8(%0,%3,1),%%xmm7
"pavgb %%xmm6,%%xmm7 \n"
"pavgb %%xmm7,%%xmm6 \n"
"pshufb %%xmm3,%%xmm6 \n"
"pmaddubsw %%xmm0,%%xmm6 \n"
"paddsw %%xmm1,%%xmm6 \n"
"psrlw $0x2,%%xmm6 \n"
"packuswb %%xmm6,%%xmm6 \n"
"movq %%xmm6," MEMACCESS2(0x8,1) " \n"
"movdqu " MEMACCESS2(0x10,0) ",%%xmm6 \n"
MEMOPREG(movdqu,0x10,0,3,1,xmm7) // movdqu 0x10(%0,%3,1),%%xmm7
"lea " MEMLEA(0x20,0) ",%0 \n"
"pavgb %%xmm6,%%xmm7 \n"
"pavgb %%xmm7,%%xmm6 \n"
"pshufb %%xmm4,%%xmm6 \n"
"pmaddubsw %4,%%xmm6 \n"
"paddsw %%xmm1,%%xmm6 \n"
"psrlw $0x2,%%xmm6 \n"
"packuswb %%xmm6,%%xmm6 \n"
"movq %%xmm6," MEMACCESS2(0x10,1) " \n"
"lea " MEMLEA(0x18,1) ",%1 \n"
"sub $0x18,%2 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(dst_width) // %2
: "r"((intptr_t)(src_stride)), // %3
"m"(kMadd21) // %4
: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7"
);
}
void ScaleRowDown38_SSSE3(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
asm volatile (
"movdqa %3,%%xmm4 \n"
"movdqa %4,%%xmm5 \n"
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
"movdqu " MEMACCESS2(0x10,0) ",%%xmm1 \n"
"lea " MEMLEA(0x20,0) ",%0 \n"
"pshufb %%xmm4,%%xmm0 \n"
"pshufb %%xmm5,%%xmm1 \n"
"paddusb %%xmm1,%%xmm0 \n"
"movq %%xmm0," MEMACCESS(1) " \n"
"movhlps %%xmm0,%%xmm1 \n"
"movd %%xmm1," MEMACCESS2(0x8,1) " \n"
"lea " MEMLEA(0xc,1) ",%1 \n"
"sub $0xc,%2 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(dst_width) // %2
: "m"(kShuf38a), // %3
"m"(kShuf38b) // %4
: "memory", "cc", "xmm0", "xmm1", "xmm4", "xmm5"
);
}
void ScaleRowDown38_2_Box_SSSE3(const uint8* src_ptr,
ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
asm volatile (
"movdqa %0,%%xmm2 \n"
"movdqa %1,%%xmm3 \n"
"movdqa %2,%%xmm4 \n"
"movdqa %3,%%xmm5 \n"
:
: "m"(kShufAb0), // %0
"m"(kShufAb1), // %1
"m"(kShufAb2), // %2
"m"(kScaleAb2) // %3
);
asm volatile (
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
MEMOPREG(movdqu,0x00,0,3,1,xmm1) // movdqu (%0,%3,1),%%xmm1
"lea " MEMLEA(0x10,0) ",%0 \n"
"pavgb %%xmm1,%%xmm0 \n"
"movdqa %%xmm0,%%xmm1 \n"
"pshufb %%xmm2,%%xmm1 \n"
"movdqa %%xmm0,%%xmm6 \n"
"pshufb %%xmm3,%%xmm6 \n"
"paddusw %%xmm6,%%xmm1 \n"
"pshufb %%xmm4,%%xmm0 \n"
"paddusw %%xmm0,%%xmm1 \n"
"pmulhuw %%xmm5,%%xmm1 \n"
"packuswb %%xmm1,%%xmm1 \n"
"movd %%xmm1," MEMACCESS(1) " \n"
"psrlq $0x10,%%xmm1 \n"
"movd %%xmm1," MEMACCESS2(0x2,1) " \n"
"lea " MEMLEA(0x6,1) ",%1 \n"
"sub $0x6,%2 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(dst_width) // %2
: "r"((intptr_t)(src_stride)) // %3
: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6"
);
}
void ScaleRowDown38_3_Box_SSSE3(const uint8* src_ptr,
ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
asm volatile (
"movdqa %0,%%xmm2 \n"
"movdqa %1,%%xmm3 \n"
"movdqa %2,%%xmm4 \n"
"pxor %%xmm5,%%xmm5 \n"
:
: "m"(kShufAc), // %0
"m"(kShufAc3), // %1
"m"(kScaleAc33) // %2
);
asm volatile (
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
MEMOPREG(movdqu,0x00,0,3,1,xmm6) // movdqu (%0,%3,1),%%xmm6
"movhlps %%xmm0,%%xmm1 \n"
"movhlps %%xmm6,%%xmm7 \n"
"punpcklbw %%xmm5,%%xmm0 \n"
"punpcklbw %%xmm5,%%xmm1 \n"
"punpcklbw %%xmm5,%%xmm6 \n"
"punpcklbw %%xmm5,%%xmm7 \n"
"paddusw %%xmm6,%%xmm0 \n"
"paddusw %%xmm7,%%xmm1 \n"
MEMOPREG(movdqu,0x00,0,3,2,xmm6) // movdqu (%0,%3,2),%%xmm6
"lea " MEMLEA(0x10,0) ",%0 \n"
"movhlps %%xmm6,%%xmm7 \n"
"punpcklbw %%xmm5,%%xmm6 \n"
"punpcklbw %%xmm5,%%xmm7 \n"
"paddusw %%xmm6,%%xmm0 \n"
"paddusw %%xmm7,%%xmm1 \n"
"movdqa %%xmm0,%%xmm6 \n"
"psrldq $0x2,%%xmm0 \n"
"paddusw %%xmm0,%%xmm6 \n"
"psrldq $0x2,%%xmm0 \n"
"paddusw %%xmm0,%%xmm6 \n"
"pshufb %%xmm2,%%xmm6 \n"
"movdqa %%xmm1,%%xmm7 \n"
"psrldq $0x2,%%xmm1 \n"
"paddusw %%xmm1,%%xmm7 \n"
"psrldq $0x2,%%xmm1 \n"
"paddusw %%xmm1,%%xmm7 \n"
"pshufb %%xmm3,%%xmm7 \n"
"paddusw %%xmm7,%%xmm6 \n"
"pmulhuw %%xmm4,%%xmm6 \n"
"packuswb %%xmm6,%%xmm6 \n"
"movd %%xmm6," MEMACCESS(1) " \n"
"psrlq $0x10,%%xmm6 \n"
"movd %%xmm6," MEMACCESS2(0x2,1) " \n"
"lea " MEMLEA(0x6,1) ",%1 \n"
"sub $0x6,%2 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(dst_width) // %2
: "r"((intptr_t)(src_stride)) // %3
: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7"
);
}
void ScaleAddRows_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
uint16* dst_ptr, int src_width, int src_height) {
int tmp_height = 0;
intptr_t tmp_src = 0;
asm volatile (
"pxor %%xmm4,%%xmm4 \n"
"sub $0x1,%5 \n"
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
"mov %0,%3 \n"
"add %6,%0 \n"
"movdqa %%xmm0,%%xmm1 \n"
"punpcklbw %%xmm4,%%xmm0 \n"
"punpckhbw %%xmm4,%%xmm1 \n"
"mov %5,%2 \n"
"test %2,%2 \n"
"je 3f \n"
LABELALIGN
"2: \n"
"movdqu " MEMACCESS(0) ",%%xmm2 \n"
"add %6,%0 \n"
"movdqa %%xmm2,%%xmm3 \n"
"punpcklbw %%xmm4,%%xmm2 \n"
"punpckhbw %%xmm4,%%xmm3 \n"
"paddusw %%xmm2,%%xmm0 \n"
"paddusw %%xmm3,%%xmm1 \n"
"sub $0x1,%2 \n"
"jg 2b \n"
LABELALIGN
"3: \n"
"movdqu %%xmm0," MEMACCESS(1) " \n"
"movdqu %%xmm1," MEMACCESS2(0x10,1) " \n"
"lea " MEMLEA(0x10,3) ",%0 \n"
"lea " MEMLEA(0x20,1) ",%1 \n"
"sub $0x10,%4 \n"
"jg 1b \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(tmp_height), // %2
"+r"(tmp_src), // %3
"+r"(src_width), // %4
"+rm"(src_height) // %5
: "rm"((intptr_t)(src_stride)) // %6
: "memory", "cc", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4"
);
}
// Bilinear column filtering. SSSE3 version.
void ScaleFilterCols_SSSE3(uint8* dst_ptr, const uint8* src_ptr,
int dst_width, int x, int dx) {
intptr_t x0 = 0, x1 = 0, temp_pixel = 0;
asm volatile (
"movd %6,%%xmm2 \n"
"movd %7,%%xmm3 \n"
"movl $0x04040000,%k2 \n"
"movd %k2,%%xmm5 \n"
"pcmpeqb %%xmm6,%%xmm6 \n"
"psrlw $0x9,%%xmm6 \n"
"pextrw $0x1,%%xmm2,%k3 \n"
"subl $0x2,%5 \n"
"jl 29f \n"
"movdqa %%xmm2,%%xmm0 \n"
"paddd %%xmm3,%%xmm0 \n"
"punpckldq %%xmm0,%%xmm2 \n"
"punpckldq %%xmm3,%%xmm3 \n"
"paddd %%xmm3,%%xmm3 \n"
"pextrw $0x3,%%xmm2,%k4 \n"
LABELALIGN
"2: \n"
"movdqa %%xmm2,%%xmm1 \n"
"paddd %%xmm3,%%xmm2 \n"
MEMOPARG(movzwl,0x00,1,3,1,k2) // movzwl (%1,%3,1),%k2
"movd %k2,%%xmm0 \n"
"psrlw $0x9,%%xmm1 \n"
MEMOPARG(movzwl,0x00,1,4,1,k2) // movzwl (%1,%4,1),%k2
"movd %k2,%%xmm4 \n"
"pshufb %%xmm5,%%xmm1 \n"
"punpcklwd %%xmm4,%%xmm0 \n"
"pxor %%xmm6,%%xmm1 \n"
"pmaddubsw %%xmm1,%%xmm0 \n"
"pextrw $0x1,%%xmm2,%k3 \n"
"pextrw $0x3,%%xmm2,%k4 \n"
"psrlw $0x7,%%xmm0 \n"
"packuswb %%xmm0,%%xmm0 \n"
"movd %%xmm0,%k2 \n"
"mov %w2," MEMACCESS(0) " \n"
"lea " MEMLEA(0x2,0) ",%0 \n"
"sub $0x2,%5 \n"
"jge 2b \n"
LABELALIGN
"29: \n"
"addl $0x1,%5 \n"
"jl 99f \n"
MEMOPARG(movzwl,0x00,1,3,1,k2) // movzwl (%1,%3,1),%k2
"movd %k2,%%xmm0 \n"
"psrlw $0x9,%%xmm2 \n"
"pshufb %%xmm5,%%xmm2 \n"
"pxor %%xmm6,%%xmm2 \n"
"pmaddubsw %%xmm2,%%xmm0 \n"
"psrlw $0x7,%%xmm0 \n"
"packuswb %%xmm0,%%xmm0 \n"
"movd %%xmm0,%k2 \n"
"mov %b2," MEMACCESS(0) " \n"
"99: \n"
: "+r"(dst_ptr), // %0
"+r"(src_ptr), // %1
"+a"(temp_pixel), // %2
"+r"(x0), // %3
"+r"(x1), // %4
"+rm"(dst_width) // %5
: "rm"(x), // %6
"rm"(dx) // %7
: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6"
);
}
// Reads 4 pixels, duplicates them and writes 8 pixels.
// Alignment requirement: src_argb 16 byte aligned, dst_argb 16 byte aligned.
void ScaleColsUp2_SSE2(uint8* dst_ptr, const uint8* src_ptr,
int dst_width, int x, int dx) {
asm volatile (
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(1) ",%%xmm0 \n"
"lea " MEMLEA(0x10,1) ",%1 \n"
"movdqa %%xmm0,%%xmm1 \n"
"punpcklbw %%xmm0,%%xmm0 \n"
"punpckhbw %%xmm1,%%xmm1 \n"
"movdqu %%xmm0," MEMACCESS(0) " \n"
"movdqu %%xmm1," MEMACCESS2(0x10,0) " \n"
"lea " MEMLEA(0x20,0) ",%0 \n"
"sub $0x20,%2 \n"
"jg 1b \n"
: "+r"(dst_ptr), // %0
"+r"(src_ptr), // %1
"+r"(dst_width) // %2
:: "memory", "cc", "xmm0", "xmm1"
);
}
void ScaleARGBRowDown2_SSE2(const uint8* src_argb,
ptrdiff_t src_stride,
uint8* dst_argb, int dst_width) {
asm volatile (
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
"movdqu " MEMACCESS2(0x10,0) ",%%xmm1 \n"
"lea " MEMLEA(0x20,0) ",%0 \n"
"shufps $0xdd,%%xmm1,%%xmm0 \n"
"movdqu %%xmm0," MEMACCESS(1) " \n"
"lea " MEMLEA(0x10,1) ",%1 \n"
"sub $0x4,%2 \n"
"jg 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_argb), // %1
"+r"(dst_width) // %2
:: "memory", "cc", "xmm0", "xmm1"
);
}
void ScaleARGBRowDown2Linear_SSE2(const uint8* src_argb,
ptrdiff_t src_stride,
uint8* dst_argb, int dst_width) {
asm volatile (
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
"movdqu " MEMACCESS2(0x10,0) ",%%xmm1 \n"
"lea " MEMLEA(0x20,0) ",%0 \n"
"movdqa %%xmm0,%%xmm2 \n"
"shufps $0x88,%%xmm1,%%xmm0 \n"
"shufps $0xdd,%%xmm1,%%xmm2 \n"
"pavgb %%xmm2,%%xmm0 \n"
"movdqu %%xmm0," MEMACCESS(1) " \n"
"lea " MEMLEA(0x10,1) ",%1 \n"
"sub $0x4,%2 \n"
"jg 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_argb), // %1
"+r"(dst_width) // %2
:: "memory", "cc", "xmm0", "xmm1"
);
}
void ScaleARGBRowDown2Box_SSE2(const uint8* src_argb,
ptrdiff_t src_stride,
uint8* dst_argb, int dst_width) {
asm volatile (
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(0) ",%%xmm0 \n"
"movdqu " MEMACCESS2(0x10,0) ",%%xmm1 \n"
MEMOPREG(movdqu,0x00,0,3,1,xmm2) // movdqu (%0,%3,1),%%xmm2
MEMOPREG(movdqu,0x10,0,3,1,xmm3) // movdqu 0x10(%0,%3,1),%%xmm3
"lea " MEMLEA(0x20,0) ",%0 \n"
"pavgb %%xmm2,%%xmm0 \n"
"pavgb %%xmm3,%%xmm1 \n"
"movdqa %%xmm0,%%xmm2 \n"
"shufps $0x88,%%xmm1,%%xmm0 \n"
"shufps $0xdd,%%xmm1,%%xmm2 \n"
"pavgb %%xmm2,%%xmm0 \n"
"movdqu %%xmm0," MEMACCESS(1) " \n"
"lea " MEMLEA(0x10,1) ",%1 \n"
"sub $0x4,%2 \n"
"jg 1b \n"
: "+r"(src_argb), // %0
"+r"(dst_argb), // %1
"+r"(dst_width) // %2
: "r"((intptr_t)(src_stride)) // %3
: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3"
);
}
// Reads 4 pixels at a time.
// Alignment requirement: dst_argb 16 byte aligned.
void ScaleARGBRowDownEven_SSE2(const uint8* src_argb, ptrdiff_t src_stride,
int src_stepx,
uint8* dst_argb, int dst_width) {
intptr_t src_stepx_x4 = (intptr_t)(src_stepx);
intptr_t src_stepx_x12 = 0;
asm volatile (
"lea " MEMLEA3(0x00,1,4) ",%1 \n"
"lea " MEMLEA4(0x00,1,1,2) ",%4 \n"
LABELALIGN
"1: \n"
"movd " MEMACCESS(0) ",%%xmm0 \n"
MEMOPREG(movd,0x00,0,1,1,xmm1) // movd (%0,%1,1),%%xmm1
"punpckldq %%xmm1,%%xmm0 \n"
MEMOPREG(movd,0x00,0,1,2,xmm2) // movd (%0,%1,2),%%xmm2
MEMOPREG(movd,0x00,0,4,1,xmm3) // movd (%0,%4,1),%%xmm3
"lea " MEMLEA4(0x00,0,1,4) ",%0 \n"
"punpckldq %%xmm3,%%xmm2 \n"
"punpcklqdq %%xmm2,%%xmm0 \n"
"movdqu %%xmm0," MEMACCESS(2) " \n"
"lea " MEMLEA(0x10,2) ",%2 \n"
"sub $0x4,%3 \n"
"jg 1b \n"
: "+r"(src_argb), // %0
"+r"(src_stepx_x4), // %1
"+r"(dst_argb), // %2
"+r"(dst_width), // %3
"+r"(src_stepx_x12) // %4
:: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3"
);
}
// Blends four 2x2 to 4x1.
// Alignment requirement: dst_argb 16 byte aligned.
void ScaleARGBRowDownEvenBox_SSE2(const uint8* src_argb,
ptrdiff_t src_stride, int src_stepx,
uint8* dst_argb, int dst_width) {
intptr_t src_stepx_x4 = (intptr_t)(src_stepx);
intptr_t src_stepx_x12 = 0;
intptr_t row1 = (intptr_t)(src_stride);
asm volatile (
"lea " MEMLEA3(0x00,1,4) ",%1 \n"
"lea " MEMLEA4(0x00,1,1,2) ",%4 \n"
"lea " MEMLEA4(0x00,0,5,1) ",%5 \n"
LABELALIGN
"1: \n"
"movq " MEMACCESS(0) ",%%xmm0 \n"
MEMOPREG(movhps,0x00,0,1,1,xmm0) // movhps (%0,%1,1),%%xmm0
MEMOPREG(movq,0x00,0,1,2,xmm1) // movq (%0,%1,2),%%xmm1
MEMOPREG(movhps,0x00,0,4,1,xmm1) // movhps (%0,%4,1),%%xmm1
"lea " MEMLEA4(0x00,0,1,4) ",%0 \n"
"movq " MEMACCESS(5) ",%%xmm2 \n"
MEMOPREG(movhps,0x00,5,1,1,xmm2) // movhps (%5,%1,1),%%xmm2
MEMOPREG(movq,0x00,5,1,2,xmm3) // movq (%5,%1,2),%%xmm3
MEMOPREG(movhps,0x00,5,4,1,xmm3) // movhps (%5,%4,1),%%xmm3
"lea " MEMLEA4(0x00,5,1,4) ",%5 \n"
"pavgb %%xmm2,%%xmm0 \n"
"pavgb %%xmm3,%%xmm1 \n"
"movdqa %%xmm0,%%xmm2 \n"
"shufps $0x88,%%xmm1,%%xmm0 \n"
"shufps $0xdd,%%xmm1,%%xmm2 \n"
"pavgb %%xmm2,%%xmm0 \n"
"movdqu %%xmm0," MEMACCESS(2) " \n"
"lea " MEMLEA(0x10,2) ",%2 \n"
"sub $0x4,%3 \n"
"jg 1b \n"
: "+r"(src_argb), // %0
"+r"(src_stepx_x4), // %1
"+r"(dst_argb), // %2
"+rm"(dst_width), // %3
"+r"(src_stepx_x12), // %4
"+r"(row1) // %5
:: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3"
);
}
void ScaleARGBCols_SSE2(uint8* dst_argb, const uint8* src_argb,
int dst_width, int x, int dx) {
intptr_t x0 = 0, x1 = 0;
asm volatile (
"movd %5,%%xmm2 \n"
"movd %6,%%xmm3 \n"
"pshufd $0x0,%%xmm2,%%xmm2 \n"
"pshufd $0x11,%%xmm3,%%xmm0 \n"
"paddd %%xmm0,%%xmm2 \n"
"paddd %%xmm3,%%xmm3 \n"
"pshufd $0x5,%%xmm3,%%xmm0 \n"
"paddd %%xmm0,%%xmm2 \n"
"paddd %%xmm3,%%xmm3 \n"
"pshufd $0x0,%%xmm3,%%xmm3 \n"
"pextrw $0x1,%%xmm2,%k0 \n"
"pextrw $0x3,%%xmm2,%k1 \n"
"cmp $0x0,%4 \n"
"jl 99f \n"
"sub $0x4,%4 \n"
"jl 49f \n"
LABELALIGN
"40: \n"
MEMOPREG(movd,0x00,3,0,4,xmm0) // movd (%3,%0,4),%%xmm0
MEMOPREG(movd,0x00,3,1,4,xmm1) // movd (%3,%1,4),%%xmm1
"pextrw $0x5,%%xmm2,%k0 \n"
"pextrw $0x7,%%xmm2,%k1 \n"
"paddd %%xmm3,%%xmm2 \n"
"punpckldq %%xmm1,%%xmm0 \n"
MEMOPREG(movd,0x00,3,0,4,xmm1) // movd (%3,%0,4),%%xmm1
MEMOPREG(movd,0x00,3,1,4,xmm4) // movd (%3,%1,4),%%xmm4
"pextrw $0x1,%%xmm2,%k0 \n"
"pextrw $0x3,%%xmm2,%k1 \n"
"punpckldq %%xmm4,%%xmm1 \n"
"punpcklqdq %%xmm1,%%xmm0 \n"
"movdqu %%xmm0," MEMACCESS(2) " \n"
"lea " MEMLEA(0x10,2) ",%2 \n"
"sub $0x4,%4 \n"
"jge 40b \n"
"49: \n"
"test $0x2,%4 \n"
"je 29f \n"
MEMOPREG(movd,0x00,3,0,4,xmm0) // movd (%3,%0,4),%%xmm0
MEMOPREG(movd,0x00,3,1,4,xmm1) // movd (%3,%1,4),%%xmm1
"pextrw $0x5,%%xmm2,%k0 \n"
"punpckldq %%xmm1,%%xmm0 \n"
"movq %%xmm0," MEMACCESS(2) " \n"
"lea " MEMLEA(0x8,2) ",%2 \n"
"29: \n"
"test $0x1,%4 \n"
"je 99f \n"
MEMOPREG(movd,0x00,3,0,4,xmm0) // movd (%3,%0,4),%%xmm0
"movd %%xmm0," MEMACCESS(2) " \n"
"99: \n"
: "+a"(x0), // %0
"+d"(x1), // %1
"+r"(dst_argb), // %2
"+r"(src_argb), // %3
"+r"(dst_width) // %4
: "rm"(x), // %5
"rm"(dx) // %6
: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3", "xmm4"
);
}
// Reads 4 pixels, duplicates them and writes 8 pixels.
// Alignment requirement: src_argb 16 byte aligned, dst_argb 16 byte aligned.
void ScaleARGBColsUp2_SSE2(uint8* dst_argb, const uint8* src_argb,
int dst_width, int x, int dx) {
asm volatile (
LABELALIGN
"1: \n"
"movdqu " MEMACCESS(1) ",%%xmm0 \n"
"lea " MEMLEA(0x10,1) ",%1 \n"
"movdqa %%xmm0,%%xmm1 \n"
"punpckldq %%xmm0,%%xmm0 \n"
"punpckhdq %%xmm1,%%xmm1 \n"
"movdqu %%xmm0," MEMACCESS(0) " \n"
"movdqu %%xmm1," MEMACCESS2(0x10,0) " \n"
"lea " MEMLEA(0x20,0) ",%0 \n"
"sub $0x8,%2 \n"
"jg 1b \n"
: "+r"(dst_argb), // %0
"+r"(src_argb), // %1
"+r"(dst_width) // %2
:: "memory", "cc", NACL_R14
"xmm0", "xmm1"
);
}
// Shuffle table for arranging 2 pixels into pairs for pmaddubsw
static uvec8 kShuffleColARGB = {
0u, 4u, 1u, 5u, 2u, 6u, 3u, 7u, // bbggrraa 1st pixel
8u, 12u, 9u, 13u, 10u, 14u, 11u, 15u // bbggrraa 2nd pixel
};
// Shuffle table for duplicating 2 fractions into 8 bytes each
static uvec8 kShuffleFractions = {
0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 4u, 4u, 4u, 4u, 4u, 4u, 4u, 4u,
};
// Bilinear row filtering combines 4x2 -> 4x1. SSSE3 version
void ScaleARGBFilterCols_SSSE3(uint8* dst_argb, const uint8* src_argb,
int dst_width, int x, int dx) {
intptr_t x0 = 0, x1 = 0;
asm volatile (
"movdqa %0,%%xmm4 \n"
"movdqa %1,%%xmm5 \n"
:
: "m"(kShuffleColARGB), // %0
"m"(kShuffleFractions) // %1
);
asm volatile (
"movd %5,%%xmm2 \n"
"movd %6,%%xmm3 \n"
"pcmpeqb %%xmm6,%%xmm6 \n"
"psrlw $0x9,%%xmm6 \n"
"pextrw $0x1,%%xmm2,%k3 \n"
"sub $0x2,%2 \n"
"jl 29f \n"
"movdqa %%xmm2,%%xmm0 \n"
"paddd %%xmm3,%%xmm0 \n"
"punpckldq %%xmm0,%%xmm2 \n"
"punpckldq %%xmm3,%%xmm3 \n"
"paddd %%xmm3,%%xmm3 \n"
"pextrw $0x3,%%xmm2,%k4 \n"
LABELALIGN
"2: \n"
"movdqa %%xmm2,%%xmm1 \n"
"paddd %%xmm3,%%xmm2 \n"
MEMOPREG(movq,0x00,1,3,4,xmm0) // movq (%1,%3,4),%%xmm0
"psrlw $0x9,%%xmm1 \n"
MEMOPREG(movhps,0x00,1,4,4,xmm0) // movhps (%1,%4,4),%%xmm0
"pshufb %%xmm5,%%xmm1 \n"
"pshufb %%xmm4,%%xmm0 \n"
"pxor %%xmm6,%%xmm1 \n"
"pmaddubsw %%xmm1,%%xmm0 \n"
"psrlw $0x7,%%xmm0 \n"
"pextrw $0x1,%%xmm2,%k3 \n"
"pextrw $0x3,%%xmm2,%k4 \n"
"packuswb %%xmm0,%%xmm0 \n"
"movq %%xmm0," MEMACCESS(0) " \n"
"lea " MEMLEA(0x8,0) ",%0 \n"
"sub $0x2,%2 \n"
"jge 2b \n"
LABELALIGN
"29: \n"
"add $0x1,%2 \n"
"jl 99f \n"
"psrlw $0x9,%%xmm2 \n"
MEMOPREG(movq,0x00,1,3,4,xmm0) // movq (%1,%3,4),%%xmm0
"pshufb %%xmm5,%%xmm2 \n"
"pshufb %%xmm4,%%xmm0 \n"
"pxor %%xmm6,%%xmm2 \n"
"pmaddubsw %%xmm2,%%xmm0 \n"
"psrlw $0x7,%%xmm0 \n"
"packuswb %%xmm0,%%xmm0 \n"
"movd %%xmm0," MEMACCESS(0) " \n"
LABELALIGN
"99: \n"
: "+r"(dst_argb), // %0
"+r"(src_argb), // %1
"+rm"(dst_width), // %2
"+r"(x0), // %3
"+r"(x1) // %4
: "rm"(x), // %5
"rm"(dx) // %6
: "memory", "cc", NACL_R14
"xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6"
);
}
// Divide num by div and return as 16.16 fixed point result.
int FixedDiv_X86(int num, int div) {
asm volatile (
"cdq \n"
"shld $0x10,%%eax,%%edx \n"
"shl $0x10,%%eax \n"
"idiv %1 \n"
"mov %0, %%eax \n"
: "+a"(num) // %0
: "c"(div) // %1
: "memory", "cc", "edx"
);
return num;
}
// Divide num - 1 by div - 1 and return as 16.16 fixed point result.
int FixedDiv1_X86(int num, int div) {
asm volatile (
"cdq \n"
"shld $0x10,%%eax,%%edx \n"
"shl $0x10,%%eax \n"
"sub $0x10001,%%eax \n"
"sbb $0x0,%%edx \n"
"sub $0x1,%1 \n"
"idiv %1 \n"
"mov %0, %%eax \n"
: "+a"(num) // %0
: "c"(div) // %1
: "memory", "cc", "edx"
);
return num;
}
#endif // defined(__x86_64__) || defined(__i386__)
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv
#endif