ref: f7cf05cfe02b9c60b9eb3037a0d0eade07ef55d2
dir: /vp8/encoder/x86/subtract_mmx.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"
;void vp8_subtract_b_mmx_impl(unsigned char *z, int src_stride,
; short *diff, unsigned char *Predictor,
; int pitch);
global sym(vp8_subtract_b_mmx_impl) PRIVATE
sym(vp8_subtract_b_mmx_impl):
push rbp
mov rbp, rsp
SHADOW_ARGS_TO_STACK 5
push rsi
push rdi
; end prolog
mov rdi, arg(2) ;diff
mov rax, arg(3) ;Predictor
mov rsi, arg(0) ;z
movsxd rdx, dword ptr arg(1);src_stride;
movsxd rcx, dword ptr arg(4);pitch
pxor mm7, mm7
movd mm0, [rsi]
movd mm1, [rax]
punpcklbw mm0, mm7
punpcklbw mm1, mm7
psubw mm0, mm1
movq [rdi], mm0
movd mm0, [rsi+rdx]
movd mm1, [rax+rcx]
punpcklbw mm0, mm7
punpcklbw mm1, mm7
psubw mm0, mm1
movq [rdi+rcx*2],mm0
movd mm0, [rsi+rdx*2]
movd mm1, [rax+rcx*2]
punpcklbw mm0, mm7
punpcklbw mm1, mm7
psubw mm0, mm1
movq [rdi+rcx*4], mm0
lea rsi, [rsi+rdx*2]
lea rcx, [rcx+rcx*2]
movd mm0, [rsi+rdx]
movd mm1, [rax+rcx]
punpcklbw mm0, mm7
punpcklbw mm1, mm7
psubw mm0, mm1
movq [rdi+rcx*2], mm0
; begin epilog
pop rdi
pop rsi
UNSHADOW_ARGS
pop rbp
ret
;void vp8_subtract_mby_mmx(short *diff, unsigned char *src, int src_stride,
;unsigned char *pred, int pred_stride)
global sym(vp8_subtract_mby_mmx) PRIVATE
sym(vp8_subtract_mby_mmx):
push rbp
mov rbp, rsp
SHADOW_ARGS_TO_STACK 5
push rsi
push rdi
; end prolog
mov rdi, arg(0) ;diff
mov rsi, arg(1) ;src
movsxd rdx, dword ptr arg(2);src_stride
mov rax, arg(3) ;pred
push rbx
movsxd rbx, dword ptr arg(4);pred_stride
pxor mm0, mm0
mov rcx, 16
.submby_loop:
movq mm1, [rsi]
movq mm3, [rax]
movq mm2, mm1
movq mm4, mm3
punpcklbw mm1, mm0
punpcklbw mm3, mm0
punpckhbw mm2, mm0
punpckhbw mm4, mm0
psubw mm1, mm3
psubw mm2, mm4
movq [rdi], mm1
movq [rdi+8], mm2
movq mm1, [rsi+8]
movq mm3, [rax+8]
movq mm2, mm1
movq mm4, mm3
punpcklbw mm1, mm0
punpcklbw mm3, mm0
punpckhbw mm2, mm0
punpckhbw mm4, mm0
psubw mm1, mm3
psubw mm2, mm4
movq [rdi+16], mm1
movq [rdi+24], mm2
add rdi, 32
lea rax, [rax+rbx]
lea rsi, [rsi+rdx]
dec rcx
jnz .submby_loop
pop rbx
pop rdi
pop rsi
; begin epilog
UNSHADOW_ARGS
pop rbp
ret
;vp8_subtract_mbuv_mmx(short *diff, unsigned char *usrc, unsigned char *vsrc,
; int src_stride, unsigned char *upred,
; unsigned char *vpred, int pred_stride)
global sym(vp8_subtract_mbuv_mmx) PRIVATE
sym(vp8_subtract_mbuv_mmx):
push rbp
mov rbp, rsp
SHADOW_ARGS_TO_STACK 7
push rsi
push rdi
; end prolog
mov rdi, arg(0) ;diff
mov rsi, arg(1) ;usrc
movsxd rdx, dword ptr arg(3);src_stride;
mov rax, arg(4) ;upred
add rdi, 256*2 ;diff = diff + 256 (shorts)
mov rcx, 8
push rbx
movsxd rbx, dword ptr arg(6);pred_stride
pxor mm7, mm7
.submbu_loop:
movq mm0, [rsi]
movq mm1, [rax]
movq mm3, mm0
movq mm4, mm1
punpcklbw mm0, mm7
punpcklbw mm1, mm7
punpckhbw mm3, mm7
punpckhbw mm4, mm7
psubw mm0, mm1
psubw mm3, mm4
movq [rdi], mm0
movq [rdi+8], mm3
add rdi, 16
add rsi, rdx
add rax, rbx
dec rcx
jnz .submbu_loop
mov rsi, arg(2) ;vsrc
mov rax, arg(5) ;vpred
mov rcx, 8
.submbv_loop:
movq mm0, [rsi]
movq mm1, [rax]
movq mm3, mm0
movq mm4, mm1
punpcklbw mm0, mm7
punpcklbw mm1, mm7
punpckhbw mm3, mm7
punpckhbw mm4, mm7
psubw mm0, mm1
psubw mm3, mm4
movq [rdi], mm0
movq [rdi+8], mm3
add rdi, 16
add rsi, rdx
add rax, rbx
dec rcx
jnz .submbv_loop
pop rbx
; begin epilog
pop rdi
pop rsi
UNSHADOW_ARGS
pop rbp
ret