121 lines
3.8 KiB
NASM
121 lines
3.8 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_inv_walsh4x4_sse2(short *input, short *output)
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global sym(vp8_short_inv_walsh4x4_sse2) PRIVATE
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sym(vp8_short_inv_walsh4x4_sse2):
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push rbp
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mov rbp, rsp
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SHADOW_ARGS_TO_STACK 2
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; end prolog
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mov rcx, arg(0)
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mov rdx, arg(1)
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mov rax, 30003h
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movdqa xmm0, [rcx + 0] ;ip[4] ip[0]
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movdqa xmm1, [rcx + 16] ;ip[12] ip[8]
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pshufd xmm2, xmm1, 4eh ;ip[8] ip[12]
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movdqa xmm3, xmm0 ;ip[4] ip[0]
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paddw xmm0, xmm2 ;ip[4]+ip[8] ip[0]+ip[12] aka b1 a1
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psubw xmm3, xmm2 ;ip[4]-ip[8] ip[0]-ip[12] aka c1 d1
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movdqa xmm4, xmm0
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punpcklqdq xmm0, xmm3 ;d1 a1
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punpckhqdq xmm4, xmm3 ;c1 b1
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movdqa xmm1, xmm4 ;c1 b1
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paddw xmm4, xmm0 ;dl+cl a1+b1 aka op[4] op[0]
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psubw xmm0, xmm1 ;d1-c1 a1-b1 aka op[12] op[8]
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; 13 12 11 10 03 02 01 00
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;
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; 33 32 31 30 23 22 21 20
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;
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movdqa xmm3, xmm4 ; 13 12 11 10 03 02 01 00
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punpcklwd xmm4, xmm0 ; 23 03 22 02 21 01 20 00
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punpckhwd xmm3, xmm0 ; 33 13 32 12 31 11 30 10
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movdqa xmm1, xmm4 ; 23 03 22 02 21 01 20 00
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punpcklwd xmm4, xmm3 ; 31 21 11 01 30 20 10 00
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punpckhwd xmm1, xmm3 ; 33 23 13 03 32 22 12 02
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;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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movd xmm0, eax
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pshufd xmm2, xmm1, 4eh ;ip[8] ip[12]
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movdqa xmm3, xmm4 ;ip[4] ip[0]
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pshufd xmm0, xmm0, 0 ;03 03 03 03 03 03 03 03
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paddw xmm4, xmm2 ;ip[4]+ip[8] ip[0]+ip[12] aka b1 a1
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psubw xmm3, xmm2 ;ip[4]-ip[8] ip[0]-ip[12] aka c1 d1
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movdqa xmm5, xmm4
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punpcklqdq xmm4, xmm3 ;d1 a1
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punpckhqdq xmm5, xmm3 ;c1 b1
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movdqa xmm1, xmm5 ;c1 b1
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paddw xmm5, xmm4 ;dl+cl a1+b1 aka op[4] op[0]
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psubw xmm4, xmm1 ;d1-c1 a1-b1 aka op[12] op[8]
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paddw xmm5, xmm0
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paddw xmm4, xmm0
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psraw xmm5, 3
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psraw xmm4, 3
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movd eax, xmm5
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movd ecx, xmm4
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psrldq xmm5, 4
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psrldq xmm4, 4
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mov word ptr[rdx+32*0], ax
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mov word ptr[rdx+32*2], cx
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shr eax, 16
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shr ecx, 16
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mov word ptr[rdx+32*4], ax
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mov word ptr[rdx+32*6], cx
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movd eax, xmm5
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movd ecx, xmm4
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psrldq xmm5, 4
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psrldq xmm4, 4
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mov word ptr[rdx+32*8], ax
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mov word ptr[rdx+32*10], cx
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shr eax, 16
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shr ecx, 16
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mov word ptr[rdx+32*12], ax
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mov word ptr[rdx+32*14], cx
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movd eax, xmm5
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movd ecx, xmm4
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psrldq xmm5, 4
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psrldq xmm4, 4
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mov word ptr[rdx+32*1], ax
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mov word ptr[rdx+32*3], cx
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shr eax, 16
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shr ecx, 16
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mov word ptr[rdx+32*5], ax
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mov word ptr[rdx+32*7], cx
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movd eax, xmm5
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movd ecx, xmm4
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mov word ptr[rdx+32*9], ax
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mov word ptr[rdx+32*11], cx
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shr eax, 16
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shr ecx, 16
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mov word ptr[rdx+32*13], ax
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mov word ptr[rdx+32*15], cx
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; begin epilog
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UNSHADOW_ARGS
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pop rbp
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ret
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