cosmopolitan/dsp/core/sad16x8n.S

42 lines
2.3 KiB
ArmAsm

/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi
Copyright 2020 Justine Alexandra Roberts Tunney
This program is free software; you can redistribute it and/or modify │
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License. │
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of │
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software │
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "libc/macros.h"
.align 16
/ Mixes audio.
/
/ @param rdi is # aligned int16[16] sample chunks to process
/ @param rsi points to aligned pcm s16le input/output memory
/ @param rdx points to aligned pcm s16le [0..1] input memory
sad16x8n:
.leafprologue
.profilable
test %rdi,%rdi
jz 1f
shl $3,%rdi
0: sub $8,%rdi
movdqa (%rsi,%rdi,2),%xmm0
paddsw (%rdx,%rdi,2),%xmm0
movdqa %xmm0,(%rsi,%rdi,2)
jnz 0b
1: .leafepilogue
.endfn sad16x8n,globl,hidden
.source __FILE__