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108 lines
2.4 KiB
108 lines
2.4 KiB
4 months ago
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@/******************************************************************************
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@ *
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@ * Copyright (C) 2018 The Android Open Source Project
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@ *
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@ * Licensed under the Apache License, Version 2.0 (the "License");
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@ * you may not use this file except in compliance with the License.
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@ * You may obtain a copy of the License at:
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@ *
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@ * http:@www.apache.org/licenses/LICENSE-2.0
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@ *
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@ * Unless required by applicable law or agreed to in writing, software
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@ * distributed under the License is distributed on an "AS IS" BASIS,
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@ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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@ * See the License for the specific language governing permissions and
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@ * limitations under the License.
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@ *
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@ *****************************************************************************
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@ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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@*/
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.text
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.p2align 2
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.global ixheaacd_calc_pre_twid_armv7
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ixheaacd_calc_pre_twid_armv7:
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STMFD sp!, {r4-r12, r14}
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VPUSH {D8-D15}
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LDR R4, [SP, #104]
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LDR R5, [SP, #108]
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ADD R6, R0, R3, LSL #3
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SUB R6, R6, #12
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MOV R7, #-16
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LOOP1:
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VLD1.32 {D0, D1}, [R4]!
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VLD1.32 {D2, D3}, [R5]!
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VLD2.32 {D4, D5}, [R0]!
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VLD2.32 {D6, D7}, [R0]!
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VLD2.32 {D8, D9}, [R6], R7
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VLD2.32 {D10, D11}, [R6], R7
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VREV64.32 D8, D8
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VREV64.32 D9, D10
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VNEG.S32 D5, D4
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VNEG.S32 D7, D6
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VMULL.S32 Q6, D0, D5
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VMULL.S32 Q7, D2, D8
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VMULL.S32 Q8, D0, D8
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VMULL.S32 Q9, D2, D4
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VMULL.S32 Q10, D1, D7
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VMULL.S32 Q11, D9, D3
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VMULL.S32 Q12, D1, D9
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VMULL.S32 Q13, D3, D6
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VSHRN.S64 D12, Q6, #32
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VSHRN.S64 D14, Q7, #32
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VSHRN.S64 D16, Q8, #32
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VSHRN.S64 D18, Q9, #32
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VSHRN.S64 D20, Q10, #32
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VSHRN.S64 D22, Q11, #32
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VSHRN.S64 D24, Q12, #32
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VSHRN.S64 D26, Q13, #32
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VSUB.I32 D0, D12, D14
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VSUB.I32 D2, D16, D18
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VSUB.I32 D1, D20, D22
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VSUB.I32 D3, D24, D26
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SUBS R3, R3, #4
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VST1.32 {D0, D1}, [R1]!
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VST1.32 {D2, D3}, [R2]!
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BGT LOOP1
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VPOP {D8-D15}
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LDMFD sp!, {r4-r12, r15}
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