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- /*
- * ARM NEON optimised Float DSP functions
- * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
- *
- * This file is part of Libav.
- *
- * Libav 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.
- *
- * Libav 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.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
- #include "config.h"
- #include "asm.S"
-
- function ff_vector_fmul_neon, export=1
- subs r3, r3, #8
- vld1.32 {d0-d3}, [r1,:128]!
- vld1.32 {d4-d7}, [r2,:128]!
- vmul.f32 q8, q0, q2
- vmul.f32 q9, q1, q3
- beq 3f
- bics ip, r3, #15
- beq 2f
- 1: subs ip, ip, #16
- vld1.32 {d0-d1}, [r1,:128]!
- vld1.32 {d4-d5}, [r2,:128]!
- vmul.f32 q10, q0, q2
- vld1.32 {d2-d3}, [r1,:128]!
- vld1.32 {d6-d7}, [r2,:128]!
- vmul.f32 q11, q1, q3
- vst1.32 {d16-d19},[r0,:128]!
- vld1.32 {d0-d1}, [r1,:128]!
- vld1.32 {d4-d5}, [r2,:128]!
- vmul.f32 q8, q0, q2
- vld1.32 {d2-d3}, [r1,:128]!
- vld1.32 {d6-d7}, [r2,:128]!
- vmul.f32 q9, q1, q3
- vst1.32 {d20-d23},[r0,:128]!
- bne 1b
- ands r3, r3, #15
- beq 3f
- 2: vld1.32 {d0-d1}, [r1,:128]!
- vld1.32 {d4-d5}, [r2,:128]!
- vst1.32 {d16-d17},[r0,:128]!
- vmul.f32 q8, q0, q2
- vld1.32 {d2-d3}, [r1,:128]!
- vld1.32 {d6-d7}, [r2,:128]!
- vst1.32 {d18-d19},[r0,:128]!
- vmul.f32 q9, q1, q3
- 3: vst1.32 {d16-d19},[r0,:128]!
- bx lr
- endfunc
-
- function ff_vector_fmac_scalar_neon, export=1
- VFP len .req r2
- VFP acc .req r3
- NOVFP len .req r3
- NOVFP acc .req r2
- VFP vdup.32 q15, d0[0]
- NOVFP vdup.32 q15, r2
- bics r12, len, #15
- mov acc, r0
- beq 3f
- vld1.32 {q0}, [r1,:128]!
- vld1.32 {q8}, [acc,:128]!
- vld1.32 {q1}, [r1,:128]!
- vld1.32 {q9}, [acc,:128]!
- 1: vmla.f32 q8, q0, q15
- vld1.32 {q2}, [r1,:128]!
- vld1.32 {q10}, [acc,:128]!
- vmla.f32 q9, q1, q15
- vld1.32 {q3}, [r1,:128]!
- vld1.32 {q11}, [acc,:128]!
- vmla.f32 q10, q2, q15
- vst1.32 {q8}, [r0,:128]!
- vmla.f32 q11, q3, q15
- vst1.32 {q9}, [r0,:128]!
- subs r12, r12, #16
- beq 2f
- vld1.32 {q0}, [r1,:128]!
- vld1.32 {q8}, [acc,:128]!
- vst1.32 {q10}, [r0,:128]!
- vld1.32 {q1}, [r1,:128]!
- vld1.32 {q9}, [acc,:128]!
- vst1.32 {q11}, [r0,:128]!
- b 1b
- 2: vst1.32 {q10}, [r0,:128]!
- vst1.32 {q11}, [r0,:128]!
- ands len, len, #15
- it eq
- bxeq lr
- 3: vld1.32 {q0}, [r1,:128]!
- vld1.32 {q8}, [acc,:128]!
- vmla.f32 q8, q0, q15
- vst1.32 {q8}, [r0,:128]!
- subs len, len, #4
- bgt 3b
- bx lr
- .unreq len
- endfunc
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