blob: 938fc173ffec1044db7d0872fb8b0026c9926e26 [file] [log] [blame]
; Copyright (c) 2010 The WebM 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 "vpx_ports/x86_abi_support.asm"
;void vp8_short_walsh4x4_sse2(short *input, short *output, int pitch)
push rbp
mov rbp, rsp
push rsi
push rdi
; end prolog
mov rsi, arg(0) ; input
mov rdi, arg(1) ; output
movsxd rdx, dword ptr arg(2) ; pitch
; first for loop
movq xmm0, MMWORD PTR [rsi] ; load input
movq xmm1, MMWORD PTR [rsi + rdx]
lea rsi, [rsi + rdx*2]
movq xmm2, MMWORD PTR [rsi]
movq xmm3, MMWORD PTR [rsi + rdx]
punpcklwd xmm0, xmm1
punpcklwd xmm2, xmm3
movdqa xmm1, xmm0
punpckldq xmm0, xmm2 ; ip[1] ip[0]
punpckhdq xmm1, xmm2 ; ip[3] ip[2]
movdqa xmm2, xmm0
paddw xmm0, xmm1
psubw xmm2, xmm1
psllw xmm0, 2 ; d1 a1
psllw xmm2, 2 ; c1 b1
movdqa xmm1, xmm0
punpcklqdq xmm0, xmm2 ; b1 a1
punpckhqdq xmm1, xmm2 ; c1 d1
pxor xmm6, xmm6
movq xmm6, xmm0
pxor xmm7, xmm7
pcmpeqw xmm7, xmm6
paddw xmm7, [GLOBAL(c1)]
movdqa xmm2, xmm0
paddw xmm0, xmm1 ; b1+c1 a1+d1
psubw xmm2, xmm1 ; b1-c1 a1-d1
paddw xmm0, xmm7 ; b1+c1 a1+d1+(a1!=0)
; second for loop
; input: 13 9 5 1 12 8 4 0 (xmm0)
; 14 10 6 2 15 11 7 3 (xmm2)
; after shuffle:
; 13 5 9 1 12 4 8 0 (xmm0)
; 14 6 10 2 15 7 11 3 (xmm1)
pshuflw xmm3, xmm0, 0xd8
pshufhw xmm0, xmm3, 0xd8
pshuflw xmm3, xmm2, 0xd8
pshufhw xmm1, xmm3, 0xd8
movdqa xmm2, xmm0
pmaddwd xmm0, [GLOBAL(c1)] ; d11 a11 d10 a10
pmaddwd xmm2, [GLOBAL(cn1)] ; c11 b11 c10 b10
movdqa xmm3, xmm1
pmaddwd xmm1, [GLOBAL(c1)] ; d12 a12 d13 a13
pmaddwd xmm3, [GLOBAL(cn1)] ; c12 b12 c13 b13
pshufd xmm4, xmm0, 0xd8 ; d11 d10 a11 a10
pshufd xmm5, xmm2, 0xd8 ; c11 c10 b11 b10
pshufd xmm6, xmm1, 0x72 ; d13 d12 a13 a12
pshufd xmm7, xmm3, 0x72 ; c13 c12 b13 b12
movdqa xmm0, xmm4
punpcklqdq xmm0, xmm5 ; b11 b10 a11 a10
punpckhqdq xmm4, xmm5 ; c11 c10 d11 d10
movdqa xmm1, xmm6
punpcklqdq xmm1, xmm7 ; b13 b12 a13 a12
punpckhqdq xmm6, xmm7 ; c13 c12 d13 d12
movdqa xmm2, xmm0
paddd xmm0, xmm4 ; b21 b20 a21 a20
psubd xmm2, xmm4 ; c21 c20 d21 d20
movdqa xmm3, xmm1
paddd xmm1, xmm6 ; b23 b22 a23 a22
psubd xmm3, xmm6 ; c23 c22 d23 d22
pxor xmm4, xmm4
movdqa xmm5, xmm4
pcmpgtd xmm4, xmm0
pcmpgtd xmm5, xmm2
pand xmm4, [GLOBAL(cd1)]
pand xmm5, [GLOBAL(cd1)]
pxor xmm6, xmm6
movdqa xmm7, xmm6
pcmpgtd xmm6, xmm1
pcmpgtd xmm7, xmm3
pand xmm6, [GLOBAL(cd1)]
pand xmm7, [GLOBAL(cd1)]
paddd xmm0, xmm4
paddd xmm2, xmm5
paddd xmm0, [GLOBAL(cd3)]
paddd xmm2, [GLOBAL(cd3)]
paddd xmm1, xmm6
paddd xmm3, xmm7
paddd xmm1, [GLOBAL(cd3)]
paddd xmm3, [GLOBAL(cd3)]
psrad xmm0, 3
psrad xmm1, 3
psrad xmm2, 3
psrad xmm3, 3
movdqa xmm4, xmm0
punpcklqdq xmm0, xmm1 ; a23 a22 a21 a20
punpckhqdq xmm4, xmm1 ; b23 b22 b21 b20
movdqa xmm5, xmm2
punpckhqdq xmm2, xmm3 ; c23 c22 c21 c20
punpcklqdq xmm5, xmm3 ; d23 d22 d21 d20
packssdw xmm0, xmm4 ; b23 b22 b21 b20 a23 a22 a21 a20
packssdw xmm2, xmm5 ; d23 d22 d21 d20 c23 c22 c21 c20
movdqa XMMWORD PTR [rdi], xmm0
movdqa XMMWORD PTR [rdi + 16], xmm2
; begin epilog
pop rdi
pop rsi
pop rbp
align 16
dw 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001
align 16
dw 0x0001, 0xffff, 0x0001, 0xffff, 0x0001, 0xffff, 0x0001, 0xffff
align 16
dd 0x00000001, 0x00000001, 0x00000001, 0x00000001
align 16
dd 0x00000003, 0x00000003, 0x00000003, 0x00000003