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synth_neon64_accurate.S
135 lines (117 loc) · 3.22 KB
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synth_neon64_accurate.S
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/*
synth_neon64_accurate: NEON optimized synth for AArch64 (MPEG compliant 16-bit output version)
copyright 1995-2014 by the mpg123 project - free software under the terms of the LGPL 2.1
see COPYING and AUTHORS files in distribution or http://mpg123.org
initially written by Taihei Monma
*/
#include "mangle.h"
#ifndef __APPLE__
.section .rodata
#else
.data
#endif
ALIGN16
maxmin_s16:
.word 1191181824
.word -956301312
.text
ALIGN4
.globl ASM_NAME(synth_1to1_neon64_accurate_asm)
#ifdef __ELF__
.type ASM_NAME(synth_1to1_neon64_accurate_asm), %function
#endif
ASM_NAME(synth_1to1_neon64_accurate_asm):
add x0, x0, #64
sub x0, x0, x3, lsl #2
eor v31.16b, v31.16b, v31.16b
adrp x5, AARCH64_PCREL_HI(maxmin_s16)
add x5, x5, AARCH64_PCREL_LO(maxmin_s16)
ld2r {v28.4s,v29.4s}, [x5]
mov w4, #4
mov x5, #128
1:
ld1 {v0.4s,v1.4s,v2.4s,v3.4s}, [x0], x5
ld1 {v4.4s,v5.4s,v6.4s,v7.4s}, [x0], x5
ld1 {v16.4s,v17.4s,v18.4s,v19.4s}, [x1], #64
ld1 {v20.4s,v21.4s,v22.4s,v23.4s}, [x1], #64
fmul v24.4s, v0.4s, v16.4s
fmul v25.4s, v4.4s, v20.4s
fmla v24.4s, v1.4s, v17.4s
fmla v25.4s, v5.4s, v21.4s
fmla v24.4s, v2.4s, v18.4s
fmla v25.4s, v6.4s, v22.4s
fmla v24.4s, v3.4s, v19.4s
fmla v25.4s, v7.4s, v23.4s
ld1 {v0.4s,v1.4s,v2.4s,v3.4s}, [x0], x5
ld1 {v4.4s,v5.4s,v6.4s,v7.4s}, [x0], x5
ld1 {v16.4s,v17.4s,v18.4s,v19.4s}, [x1], #64
ld1 {v20.4s,v21.4s,v22.4s,v23.4s}, [x1], #64
fmul v26.4s, v0.4s, v16.4s
fmul v27.4s, v4.4s, v20.4s
fmla v26.4s, v1.4s, v17.4s
fmla v27.4s, v5.4s, v21.4s
fmla v26.4s, v2.4s, v18.4s
fmla v27.4s, v6.4s, v22.4s
fmla v26.4s, v3.4s, v19.4s
fmla v27.4s, v7.4s, v23.4s
faddp v0.4s, v24.4s, v25.4s
faddp v1.4s, v26.4s, v27.4s
faddp v0.4s, v0.4s, v1.4s
ld2 {v4.4h,v5.4h}, [x2]
fcvtns v1.4s, v0.4s
fcmgt v2.4s, v0.4s, v28.4s
fcmgt v3.4s, v29.4s, v0.4s
sqxtn v4.4h, v1.4s
add v2.4s, v2.4s, v3.4s
add v31.4s, v31.4s, v2.4s
st2 {v4.4h,v5.4h}, [x2], #16
subs w4, w4, #1
b.ne 1b
mov w4, #4
mov x6, #-64
2:
ld1 {v0.4s,v1.4s,v2.4s,v3.4s}, [x0], x5
ld1 {v4.4s,v5.4s,v6.4s,v7.4s}, [x0], x5
ld1 {v16.4s,v17.4s,v18.4s,v19.4s}, [x1], x6
ld1 {v20.4s,v21.4s,v22.4s,v23.4s}, [x1], x6
fmul v24.4s, v0.4s, v16.4s
fmul v25.4s, v4.4s, v20.4s
fmla v24.4s, v1.4s, v17.4s
fmla v25.4s, v5.4s, v21.4s
fmla v24.4s, v2.4s, v18.4s
fmla v25.4s, v6.4s, v22.4s
fmla v24.4s, v3.4s, v19.4s
fmla v25.4s, v7.4s, v23.4s
ld1 {v0.4s,v1.4s,v2.4s,v3.4s}, [x0], x5
ld1 {v4.4s,v5.4s,v6.4s,v7.4s}, [x0], x5
ld1 {v16.4s,v17.4s,v18.4s,v19.4s}, [x1], x6
ld1 {v20.4s,v21.4s,v22.4s,v23.4s}, [x1], x6
fmul v26.4s, v0.4s, v16.4s
fmul v27.4s, v4.4s, v20.4s
fmla v26.4s, v1.4s, v17.4s
fmla v27.4s, v5.4s, v21.4s
fmla v26.4s, v2.4s, v18.4s
fmla v27.4s, v6.4s, v22.4s
fmla v26.4s, v3.4s, v19.4s
fmla v27.4s, v7.4s, v23.4s
faddp v0.4s, v24.4s, v25.4s
faddp v1.4s, v26.4s, v27.4s
faddp v0.4s, v0.4s, v1.4s
ld2 {v4.4h,v5.4h}, [x2]
fcvtns v1.4s, v0.4s
fcmgt v2.4s, v0.4s, v28.4s
fcmgt v3.4s, v29.4s, v0.4s
sqxtn v4.4h, v1.4s
add v2.4s, v2.4s, v3.4s
add v31.4s, v31.4s, v2.4s
st2 {v4.4h,v5.4h}, [x2], #16
subs w4, w4, #1
b.ne 2b
AARCH64_DUP_2D(v0, v31, 1)
add v0.4s, v0.4s, v31.4s
AARCH64_DUP_4S(v1, v0, 1)
add v0.4s, v0.4s, v1.4s
umov w0, v0.s[0]
neg w0, w0
ret
NONEXEC_STACK