ref: 9cdaa3d72eade9ad162ef8f78a93bd8f85c6de10
dir: /vp9/encoder/x86/vp9_variance_impl_sse2.asm/
;
; 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"
;unsigned int vp9_get_mb_ss_sse2
;(
; short *src_ptr
;)
global sym(vp9_get_mb_ss_sse2) PRIVATE
sym(vp9_get_mb_ss_sse2):
push rbp
mov rbp, rsp
SHADOW_ARGS_TO_STACK 1
GET_GOT rbx
push rsi
push rdi
sub rsp, 16
; end prolog
mov rax, arg(0) ;[src_ptr]
mov rcx, 8
pxor xmm4, xmm4
.NEXTROW:
movdqa xmm0, [rax]
movdqa xmm1, [rax+16]
movdqa xmm2, [rax+32]
movdqa xmm3, [rax+48]
pmaddwd xmm0, xmm0
pmaddwd xmm1, xmm1
pmaddwd xmm2, xmm2
pmaddwd xmm3, xmm3
paddd xmm0, xmm1
paddd xmm2, xmm3
paddd xmm4, xmm0
paddd xmm4, xmm2
add rax, 0x40
dec rcx
ja .NEXTROW
movdqa xmm3,xmm4
psrldq xmm4,8
paddd xmm4,xmm3
movdqa xmm3,xmm4
psrldq xmm4,4
paddd xmm4,xmm3
movq rax,xmm4
; begin epilog
add rsp, 16
pop rdi
pop rsi
RESTORE_GOT
UNSHADOW_ARGS
pop rbp
ret
;unsigned int vp9_get16x16var_sse2
;(
; unsigned char * src_ptr,
; int source_stride,
; unsigned char * ref_ptr,
; int recon_stride,
; unsigned int * SSE,
; int * Sum
;)
global sym(vp9_get16x16var_sse2) PRIVATE
sym(vp9_get16x16var_sse2):
push rbp
mov rbp, rsp
SHADOW_ARGS_TO_STACK 6
SAVE_XMM 7
push rbx
push rsi
push rdi
; end prolog
mov rsi, arg(0) ;[src_ptr]
mov rdi, arg(2) ;[ref_ptr]
movsxd rax, DWORD PTR arg(1) ;[source_stride]
movsxd rdx, DWORD PTR arg(3) ;[recon_stride]
; Prefetch data
lea rcx, [rax+rax*2]
prefetcht0 [rsi]
prefetcht0 [rsi+rax]
prefetcht0 [rsi+rax*2]
prefetcht0 [rsi+rcx]
lea rbx, [rsi+rax*4]
prefetcht0 [rbx]
prefetcht0 [rbx+rax]
prefetcht0 [rbx+rax*2]
prefetcht0 [rbx+rcx]
lea rcx, [rdx+rdx*2]
prefetcht0 [rdi]
prefetcht0 [rdi+rdx]
prefetcht0 [rdi+rdx*2]
prefetcht0 [rdi+rcx]
lea rbx, [rdi+rdx*4]
prefetcht0 [rbx]
prefetcht0 [rbx+rdx]
prefetcht0 [rbx+rdx*2]
prefetcht0 [rbx+rcx]
pxor xmm0, xmm0 ; clear xmm0 for unpack
pxor xmm7, xmm7 ; clear xmm7 for accumulating diffs
pxor xmm6, xmm6 ; clear xmm6 for accumulating sse
mov rcx, 16
.var16loop:
movdqu xmm1, XMMWORD PTR [rsi]
movdqu xmm2, XMMWORD PTR [rdi]
prefetcht0 [rsi+rax*8]
prefetcht0 [rdi+rdx*8]
movdqa xmm3, xmm1
movdqa xmm4, xmm2
punpcklbw xmm1, xmm0
punpckhbw xmm3, xmm0
punpcklbw xmm2, xmm0
punpckhbw xmm4, xmm0
psubw xmm1, xmm2
psubw xmm3, xmm4
paddw xmm7, xmm1
pmaddwd xmm1, xmm1
paddw xmm7, xmm3
pmaddwd xmm3, xmm3
paddd xmm6, xmm1
paddd xmm6, xmm3
add rsi, rax
add rdi, rdx
sub rcx, 1
jnz .var16loop
movdqa xmm1, xmm6
pxor xmm6, xmm6
pxor xmm5, xmm5
punpcklwd xmm6, xmm7
punpckhwd xmm5, xmm7
psrad xmm5, 16
psrad xmm6, 16
paddd xmm6, xmm5
movdqa xmm2, xmm1
punpckldq xmm1, xmm0
punpckhdq xmm2, xmm0
movdqa xmm7, xmm6
paddd xmm1, xmm2
punpckldq xmm6, xmm0
punpckhdq xmm7, xmm0
paddd xmm6, xmm7
movdqa xmm2, xmm1
movdqa xmm7, xmm6
psrldq xmm1, 8
psrldq xmm6, 8
paddd xmm7, xmm6
paddd xmm1, xmm2
mov rax, arg(5) ;[Sum]
mov rdi, arg(4) ;[SSE]
movd DWORD PTR [rax], xmm7
movd DWORD PTR [rdi], xmm1
; begin epilog
pop rdi
pop rsi
pop rbx
RESTORE_XMM
UNSHADOW_ARGS
pop rbp
ret