1 @/* 2 @ ** Copyright 2003-2010, VisualOn, Inc. 3 @ ** 4 @ ** Licensed under the Apache License, Version 2.0 (the "License"); 5 @ ** you may not use this file except in compliance with the License. 6 @ ** You may obtain a copy of the License at 7 @ ** 8 @ ** http://www.apache.org/licenses/LICENSE-2.0 9 @ ** 10 @ ** Unless required by applicable law or agreed to in writing, software 11 @ ** distributed under the License is distributed on an "AS IS" BASIS, 12 @ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 @ ** See the License for the specific language governing permissions and 14 @ ** limitations under the License. 15 @ */ 16 17 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 18 @ File: CalcWindowEnergy_v5.s 19 @ 20 @ Content: CalcWindowEnergy function armv5 assemble 21 @ 22 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 23 24 .section .text 25 26 .global CalcWindowEnergy 27 28 CalcWindowEnergy: 29 stmdb sp!, {r4 - r11, lr} 30 sub r13, r13, #20 31 32 mov r3, r3, lsl #16 33 ldr r10, [r0, #168] @ states0 = blockSwitchingControl->iirStates[0]; 34 mov r3, r3, asr #16 35 ldr r11, [r0, #172] @ states1 = blockSwitchingControl->iirStates[1]; 36 37 mov r2, r2, lsl #16 38 ldr r12, hiPassCoeff @ Coeff0 = hiPassCoeff[0]; 39 mov r2, r2, asr #16 40 ldr r14, hiPassCoeff + 4 @ Coeff1 = hiPassCoeff[1]; 41 42 mov r8, #0 @ w=0 43 mov r5, #0 @ wOffset = 0; 44 45 BLOCK_BEGIN: 46 mov r6, #0 @ accuUE = 0; 47 mov r7, #0 @ accuFE = 0; 48 mov r4, #0 @ i=0 49 50 str r8, [r13, #4] 51 str r0, [r13, #8] 52 str r3, [r13, #12] 53 54 ENERGY_BEG: 55 mov r9, r5, lsl #1 56 ldrsh r9, [r1, r9] @ tempUnfiltered = timeSignal[tidx]; 57 58 add r5, r5, r2 @ tidx = tidx + chIncrement; 59 60 smulwb r3, r14, r9 @ accu1 = L_mpy_ls(Coeff1, tempUnfiltered); 61 smull r0, r8, r12, r11 @ accu2 = fixmul( Coeff0, states1 ); 62 63 mov r3, r3, lsl #1 64 mov r8, r8, lsl #1 65 66 sub r0, r3, r10 @ accu3 = accu1 - states0; 67 sub r8, r0, r8 @ out = accu3 - accu2; 68 69 mov r10, r3 @ states0 = accu1; 70 mov r11, r8 @ states1 = out; 71 72 mul r3, r9, r9 73 mov r8, r8, asr #16 74 75 add r4, r4, #1 76 add r6, r6, r3, asr #7 77 78 mul r9, r8, r8 79 ldr r3, [r13, #12] 80 81 add r7, r7, r9, asr #7 82 83 cmp r4, r3 84 blt ENERGY_BEG 85 86 ldr r0, [r13, #8] 87 ldr r8, [r13, #4] 88 89 ENERGY_END: 90 add r4, r0, r8, lsl #2 91 92 str r6, [r4, #72] 93 add r8, r8, #1 94 str r7, [r4, #136] 95 96 cmp r8, #8 97 blt BLOCK_BEGIN 98 99 BLOCK_END: 100 str r10, [r0, #168] 101 str r11, [r0, #172] 102 mov r0, #1 103 104 add r13, r13, #20 105 ldmia sp!, {r4 - r11, pc} 106 107 hiPassCoeff: 108 .word 0xbec8b439 109 .word 0x609d4952 110 111 @ENDP 112 .end 113
