mirror of
https://github.com/libretro/RetroArch.git
synced 2024-11-25 00:49:47 +00:00
61 lines
1.6 KiB
ArmAsm
61 lines
1.6 KiB
ArmAsm
/* RetroArch - A frontend for libretro.
|
|
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
|
|
*
|
|
* RetroArch 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 Found-
|
|
* ation, either version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* RetroArch 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 RetroArch.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#if defined(__ARM_NEON__)
|
|
|
|
#ifndef __MACH__
|
|
.arm
|
|
#endif
|
|
.align 4
|
|
.globl process_sinc_neon_asm
|
|
.globl _process_sinc_neon_asm
|
|
# void process_sinc_neon(float *out, const float *left, const float *right, const float *coeff, unsigned taps)
|
|
# Assumes taps is >= 8, and a multiple of 8.
|
|
process_sinc_neon_asm:
|
|
_process_sinc_neon_asm:
|
|
|
|
push {r4, lr}
|
|
vmov.f32 q0, #0.0
|
|
vmov.f32 q8, #0.0
|
|
|
|
# Taps argument (r4) goes on stack in armeabi.
|
|
ldr r4, [sp, #8]
|
|
|
|
1:
|
|
# Left
|
|
vld1.f32 {q2-q3}, [r1]!
|
|
# Right
|
|
vld1.f32 {q10-q11}, [r2]!
|
|
# Coeff
|
|
vld1.f32 {q12-q13}, [r3, :128]!
|
|
|
|
# Left / Right
|
|
vmla.f32 q0, q2, q12
|
|
vmla.f32 q8, q10, q12
|
|
vmla.f32 q0, q3, q13
|
|
vmla.f32 q8, q11, q13
|
|
|
|
subs r4, r4, #8
|
|
bne 1b
|
|
|
|
# Add everything together
|
|
vadd.f32 d0, d0, d1
|
|
vadd.f32 d16, d16, d17
|
|
vpadd.f32 d0, d0, d16
|
|
vst1.f32 d0, [r0]
|
|
|
|
pop {r4, pc}
|
|
|
|
#endif
|