165 lines
4.7 KiB
NASM
165 lines
4.7 KiB
NASM
;
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; Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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;
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; Use of this source code is governed by a BSD-style license
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; that can be found in the LICENSE file in the root of the source
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; tree. An additional intellectual property rights grant can be found
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; in the file PATENTS. All contributing project authors may
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; be found in the AUTHORS file in the root of the source tree.
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;
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%include "vpx_ports/x86_abi_support.asm"
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;void vp8_short_walsh4x4_sse2(short *input, short *output, int pitch)
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global sym(vp8_short_walsh4x4_sse2) PRIVATE
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sym(vp8_short_walsh4x4_sse2):
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push rbp
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mov rbp, rsp
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SHADOW_ARGS_TO_STACK 3
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SAVE_XMM 7
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GET_GOT rbx
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push rsi
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push rdi
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; end prolog
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mov rsi, arg(0) ; input
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mov rdi, arg(1) ; output
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movsxd rdx, dword ptr arg(2) ; pitch
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; first for loop
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movq xmm0, MMWORD PTR [rsi] ; load input
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movq xmm1, MMWORD PTR [rsi + rdx]
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lea rsi, [rsi + rdx*2]
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movq xmm2, MMWORD PTR [rsi]
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movq xmm3, MMWORD PTR [rsi + rdx]
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punpcklwd xmm0, xmm1
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punpcklwd xmm2, xmm3
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movdqa xmm1, xmm0
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punpckldq xmm0, xmm2 ; ip[1] ip[0]
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punpckhdq xmm1, xmm2 ; ip[3] ip[2]
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movdqa xmm2, xmm0
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paddw xmm0, xmm1
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psubw xmm2, xmm1
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psllw xmm0, 2 ; d1 a1
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psllw xmm2, 2 ; c1 b1
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movdqa xmm1, xmm0
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punpcklqdq xmm0, xmm2 ; b1 a1
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punpckhqdq xmm1, xmm2 ; c1 d1
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pxor xmm6, xmm6
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movq xmm6, xmm0
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pxor xmm7, xmm7
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pcmpeqw xmm7, xmm6
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paddw xmm7, [GLOBAL(c1)]
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movdqa xmm2, xmm0
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paddw xmm0, xmm1 ; b1+c1 a1+d1
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psubw xmm2, xmm1 ; b1-c1 a1-d1
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paddw xmm0, xmm7 ; b1+c1 a1+d1+(a1!=0)
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; second for loop
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; input: 13 9 5 1 12 8 4 0 (xmm0)
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; 14 10 6 2 15 11 7 3 (xmm2)
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; after shuffle:
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; 13 5 9 1 12 4 8 0 (xmm0)
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; 14 6 10 2 15 7 11 3 (xmm1)
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pshuflw xmm3, xmm0, 0xd8
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pshufhw xmm0, xmm3, 0xd8
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pshuflw xmm3, xmm2, 0xd8
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pshufhw xmm1, xmm3, 0xd8
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movdqa xmm2, xmm0
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pmaddwd xmm0, [GLOBAL(c1)] ; d11 a11 d10 a10
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pmaddwd xmm2, [GLOBAL(cn1)] ; c11 b11 c10 b10
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movdqa xmm3, xmm1
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pmaddwd xmm1, [GLOBAL(c1)] ; d12 a12 d13 a13
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pmaddwd xmm3, [GLOBAL(cn1)] ; c12 b12 c13 b13
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pshufd xmm4, xmm0, 0xd8 ; d11 d10 a11 a10
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pshufd xmm5, xmm2, 0xd8 ; c11 c10 b11 b10
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pshufd xmm6, xmm1, 0x72 ; d13 d12 a13 a12
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pshufd xmm7, xmm3, 0x72 ; c13 c12 b13 b12
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movdqa xmm0, xmm4
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punpcklqdq xmm0, xmm5 ; b11 b10 a11 a10
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punpckhqdq xmm4, xmm5 ; c11 c10 d11 d10
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movdqa xmm1, xmm6
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punpcklqdq xmm1, xmm7 ; b13 b12 a13 a12
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punpckhqdq xmm6, xmm7 ; c13 c12 d13 d12
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movdqa xmm2, xmm0
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paddd xmm0, xmm4 ; b21 b20 a21 a20
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psubd xmm2, xmm4 ; c21 c20 d21 d20
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movdqa xmm3, xmm1
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paddd xmm1, xmm6 ; b23 b22 a23 a22
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psubd xmm3, xmm6 ; c23 c22 d23 d22
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pxor xmm4, xmm4
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movdqa xmm5, xmm4
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pcmpgtd xmm4, xmm0
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pcmpgtd xmm5, xmm2
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pand xmm4, [GLOBAL(cd1)]
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pand xmm5, [GLOBAL(cd1)]
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pxor xmm6, xmm6
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movdqa xmm7, xmm6
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pcmpgtd xmm6, xmm1
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pcmpgtd xmm7, xmm3
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pand xmm6, [GLOBAL(cd1)]
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pand xmm7, [GLOBAL(cd1)]
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paddd xmm0, xmm4
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paddd xmm2, xmm5
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paddd xmm0, [GLOBAL(cd3)]
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paddd xmm2, [GLOBAL(cd3)]
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paddd xmm1, xmm6
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paddd xmm3, xmm7
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paddd xmm1, [GLOBAL(cd3)]
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paddd xmm3, [GLOBAL(cd3)]
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psrad xmm0, 3
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psrad xmm1, 3
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psrad xmm2, 3
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psrad xmm3, 3
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movdqa xmm4, xmm0
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punpcklqdq xmm0, xmm1 ; a23 a22 a21 a20
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punpckhqdq xmm4, xmm1 ; b23 b22 b21 b20
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movdqa xmm5, xmm2
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punpckhqdq xmm2, xmm3 ; c23 c22 c21 c20
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punpcklqdq xmm5, xmm3 ; d23 d22 d21 d20
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packssdw xmm0, xmm4 ; b23 b22 b21 b20 a23 a22 a21 a20
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packssdw xmm2, xmm5 ; d23 d22 d21 d20 c23 c22 c21 c20
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movdqa XMMWORD PTR [rdi], xmm0
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movdqa XMMWORD PTR [rdi + 16], xmm2
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; begin epilog
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pop rdi
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pop rsi
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RESTORE_GOT
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RESTORE_XMM
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UNSHADOW_ARGS
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pop rbp
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ret
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SECTION_RODATA
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align 16
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c1:
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dw 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001
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align 16
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cn1:
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dw 0x0001, 0xffff, 0x0001, 0xffff, 0x0001, 0xffff, 0x0001, 0xffff
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align 16
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cd1:
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dd 0x00000001, 0x00000001, 0x00000001, 0x00000001
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align 16
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cd3:
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dd 0x00000003, 0x00000003, 0x00000003, 0x00000003
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