1 @/****************************************************************************** 2 @ * 3 @ * Copyright (C) 2018 The Android Open Source Project 4 @ * 5 @ * Licensed under the Apache License, Version 2.0 (the "License"); 6 @ * you may not use this file except in compliance with the License. 7 @ * You may obtain a copy of the License at: 8 @ * 9 @ * http://www.apache.org/licenses/LICENSE-2.0 10 @ * 11 @ * Unless required by applicable law or agreed to in writing, software 12 @ * distributed under the License is distributed on an "AS IS" BASIS, 13 @ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 @ * See the License for the specific language governing permissions and 15 @ * limitations under the License. 16 @ * 17 @ ***************************************************************************** 18 @ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 @*/ 20 21 22 .text 23 .p2align 2 24 .global ixheaacd_conv_ergtoamplitudelp_armv7 25 ixheaacd_conv_ergtoamplitudelp_armv7: 26 27 STMFD sp!, {r4-r12, r14} 28 29 LDR R5, [SP, #44] 30 LDR R4, [SP, #40] 31 LDR R11, =0x5A82 32 LDR R10, =0x1FF 33 34 LOOP1: 35 36 LDRSH R6, [R2, #0] 37 MOV R12, #0 38 MOV R14, #-16 39 MOVS R6, R6 40 BLE ENDIF1_1 41 42 LDRSH R7, [R2, #2] 43 CLZ R8, R6 44 SUB R8, R8, #17 45 SUB R7, R7, R8 46 MOV R6, R6, LSL R8 47 MOV R6, R6, ASR #5 48 AND R6, R6, R10 49 50 TST R7, #1 51 BIC R6, R6, #1 52 LDRH R12, [R6, R5] 53 ADDNE R7, R7, #3 54 MOV R14, R7, ASR #1 55 SMULWBNE R12, R12, R11 56 57 ENDIF1_1: 58 STRH R14, [R2, #2] 59 60 61 LDRSH R6, [R3, #0] 62 MOV R8, #0 63 MOV R9, #-16 64 65 MOVS R6, R6 66 BLE ENDIF1_2 67 68 LDRSH R7, [R3, #2] 69 CLZ R8, R6 70 SUB R8, R8, #17 71 SUB R7, R7, R8 72 MOV R6, R6, LSL R8 73 MOV R6, R6, ASR #5 74 AND R6, R6, R10 75 76 TST R7, #1 77 BIC R6, R6, #1 78 LDRH R8, [R6, R5] 79 ADDNE R7, R7, #3 80 MOV R9, R7, ASR #1 81 SMULWBNE R8, R8, R11 82 83 ENDIF1_2: 84 STRH R9, [R3, #2] 85 STRH R8, [R3], #4 86 87 88 89 90 LDRSH R6, [R4, #0] 91 MOV R8, #0 92 MOV R9, #-16 93 MOVS R6, R6 94 BLE ENDIF1_3 95 96 LDRSH R7, [R4, #2] 97 CLZ R8, R6 98 SUB R8, R8, #17 99 SUB R7, R7, R8 100 MOV R6, R6, LSL R8 101 MOV R6, R6, ASR #5 102 ANDS R6, R6, R10 103 104 TST R7, #1 105 BIC R6, R6, #1 106 LDRH R8, [R6, R5] 107 ADDNE R7, R7, #3 108 MOV R9, R7, ASR #1 109 SMULWBNE R8, R8, R11 110 111 ENDIF1_3: 112 STRH R9, [R4, #2] 113 114 SUB R6, R1, R9 115 SUBS R6, R6, #4 116 117 RSBLE R6, R6, #0 118 MOVGT R8, R8, ASR R6 119 MOVLE R8, R8, LSL R6 120 STRH R8, [R4], #4 121 122 123 SUBS R6, R14, R1 124 BLE ELSE1 125 126 CMP R6, #15 127 MOVGT R6, #15 128 MOV R12, R12, LSL R6 129 CMP R12, #0x8000 130 MVNGE R12, #0x8000 131 CMNLT R12, #0x00008000 132 MOVLT R12, #0x00008000 133 STRH R12, [R2], #4 134 SUBS R0, R0, #1 135 BGT LOOP1 136 137 ELSE1: 138 RSB R6, R6, #0 139 MOV R12, R12, ASR R6 140 STRH R12, [R2], #4 141 SUBS R0, R0, #1 142 BGT LOOP1 143 LDMFD sp!, {r4-r12, r15} 144 145 146 147 148 149
