cosmopolitan/dsp/core/sad16x8n.S

41 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
Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
*/
#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__