Osmocom GSM/GPRS/EGPRS transceiver, originally forked from OpenBTS transceiver. For building SDR based GSM BTS with osmo-bts-trx.
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osmo-trx/Transceiver52M/arch/arm/convert_neon.S

49 lines
1.5 KiB

/*
* NEON type conversions
* Copyright (C) 2012, 2013 Thomas Tsou <tom@tsou.cc>
*
* SPDX-License-Identifier: LGPL-2.1+
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*/
.syntax unified
.text
.align 2
.global neon_convert_ps_si16_4n
.type neon_convert_ps_si16_4n, %function
neon_convert_ps_si16_4n:
vld1.32 {q1}, [r2]
.loop_fltint:
vld1.64 {d0-d1}, [r1]!
vmul.f32 q0, q1
vcvt.s32.f32 q2, q0
vqmovn.s32 d0, q2
vst1.64 {d0}, [r0]!
subs r3, #1
bne .loop_fltint
bx lr
.size neon_convert_ps_si16_4n, .-neon_convert_ps_si16_4n
.text
.align 2
.global neon_convert_si16_ps_4n
.type neon_convert_si16_ps_4n, %function
neon_convert_si16_ps_4n:
.loop_intflt:
vld1.64 {d0}, [r1]!
vmovl.s16 q1, d0
vcvt.f32.s32 q0, q1
vst1.64 {q0}, [r0]!
subs r2, #1
bne .loop_intflt
bx lr
.size neon_convert_si16_ps_4n, .-neon_convert_si16_ps_4n
.section .note.GNU-stack,"",%progbits