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1 files changed, 226 insertions, 226 deletions
diff --git a/apps/codecs/libatrac/atrac3_arm.S b/apps/codecs/libatrac/atrac3_arm.S
index 80eaa7954d..0dacff0b7c 100644
--- a/apps/codecs/libatrac/atrac3_arm.S
+++ b/apps/codecs/libatrac/atrac3_arm.S
@@ -1,226 +1,226 @@
1/*************************************************************************** 1/***************************************************************************
2 * __________ __ ___. 2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___ 3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / 4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < 5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ 6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/ 7 * \/ \/ \/ \/ \/
8 * $Id: 8 * $Id:
9 * 9 *
10 * Copyright (C) 2009 by Andree Buschmann 10 * Copyright (C) 2009 by Andree Buschmann
11 * 11 *
12 * This program is free software; you can redistribute it and/or 12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License 13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2 14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version. 15 * of the License, or (at your option) any later version.
16 * 16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied. 18 * KIND, either express or implied.
19 * 19 *
20 ****************************************************************************/ 20 ****************************************************************************/
21 21
22#include "config.h" 22#include "config.h"
23 23
24 .section .text, "ax", %progbits 24 .section .text, "ax", %progbits
25 25
26/**************************************************************************** 26/****************************************************************************
27 * void atrac3_iqmf_matrixing(int32_t *dest, 27 * void atrac3_iqmf_matrixing(int32_t *dest,
28 * int32_t *inlo, 28 * int32_t *inlo,
29 * int32_t *inhi, 29 * int32_t *inhi,
30 * unsigned int count); 30 * unsigned int count);
31 * 31 *
32 * Matrixing step within iqmf of atrac3 synthesis. Reference implementation: 32 * Matrixing step within iqmf of atrac3 synthesis. Reference implementation:
33 * 33 *
34 * for(i=0; i<counter; i+=2){ 34 * for(i=0; i<counter; i+=2){
35 * dest[2*i+0] = inlo[i ] + inhi[i ]; 35 * dest[2*i+0] = inlo[i ] + inhi[i ];
36 * dest[2*i+1] = inlo[i ] - inhi[i ]; 36 * dest[2*i+1] = inlo[i ] - inhi[i ];
37 * dest[2*i+2] = inlo[i+1] + inhi[i+1]; 37 * dest[2*i+2] = inlo[i+1] + inhi[i+1];
38 * dest[2*i+3] = inlo[i+1] - inhi[i+1]; 38 * dest[2*i+3] = inlo[i+1] - inhi[i+1];
39 * } 39 * }
40 * Note: r12 is a scratch register and can be used without restorage. 40 * Note: r12 is a scratch register and can be used without restorage.
41 ****************************************************************************/ 41 ****************************************************************************/
42 .align 2 42 .align 2
43 .global atrac3_iqmf_matrixing 43 .global atrac3_iqmf_matrixing
44 .type atrac3_iqmf_matrixing, %function 44 .type atrac3_iqmf_matrixing, %function
45 45
46atrac3_iqmf_matrixing: 46atrac3_iqmf_matrixing:
47 /* r0 = dest */ 47 /* r0 = dest */
48 /* r1 = inlo */ 48 /* r1 = inlo */
49 /* r2 = inhi */ 49 /* r2 = inhi */
50 /* r3 = counter */ 50 /* r3 = counter */
51 stmfd sp!, {r4-r9, lr} /* save non-scratch registers */ 51 stmfd sp!, {r4-r9, lr} /* save non-scratch registers */
52 52
53.iqmf_matrixing_loop: 53.iqmf_matrixing_loop:
54 ldmia r1!, { r4, r6, r8, r12} /* load inlo[0...3] */ 54 ldmia r1!, { r4, r6, r8, r12} /* load inlo[0...3] */
55 ldmia r2!, { r5, r7, r9, lr } /* load inhi[0...3] */ 55 ldmia r2!, { r5, r7, r9, lr } /* load inhi[0...3] */
56 add r4, r4, r5 /* r4 = inlo[0] + inhi[0] */ 56 add r4, r4, r5 /* r4 = inlo[0] + inhi[0] */
57 sub r5, r4, r5, asl #1 /* r5 = inlo[0] - inhi[0] */ 57 sub r5, r4, r5, asl #1 /* r5 = inlo[0] - inhi[0] */
58 add r6, r6, r7 /* r6 = inlo[1] + inhi[1] */ 58 add r6, r6, r7 /* r6 = inlo[1] + inhi[1] */
59 sub r7, r6, r7, asl #1 /* r7 = inlo[1] - inhi[1] */ 59 sub r7, r6, r7, asl #1 /* r7 = inlo[1] - inhi[1] */
60 add r8, r8, r9 /* r8 = inlo[2] + inhi[2] */ 60 add r8, r8, r9 /* r8 = inlo[2] + inhi[2] */
61 sub r9, r8, r9, asl #1 /* r9 = inlo[2] - inhi[2] */ 61 sub r9, r8, r9, asl #1 /* r9 = inlo[2] - inhi[2] */
62 add r12, r12, lr /* r12 = inlo[3] + inhi[3] */ 62 add r12, r12, lr /* r12 = inlo[3] + inhi[3] */
63 sub lr , r12, lr, asl #1 /* lr = inlo[3] - inhi[3] */ 63 sub lr , r12, lr, asl #1 /* lr = inlo[3] - inhi[3] */
64 stmia r0!, {r4-r9, r12, lr} /* store results to dest */ 64 stmia r0!, {r4-r9, r12, lr} /* store results to dest */
65 subs r3, r3, #4 /* counter -= 4 */ 65 subs r3, r3, #4 /* counter -= 4 */
66 bgt .iqmf_matrixing_loop 66 bgt .iqmf_matrixing_loop
67 67
68 ldmpc regs=r4-r9 /* restore registers */ 68 ldmpc regs=r4-r9 /* restore registers */
69 69
70.atrac3_iqmf_matrixing_end: 70.atrac3_iqmf_matrixing_end:
71 .size atrac3_iqmf_matrixing,.atrac3_iqmf_matrixing_end-atrac3_iqmf_matrixing 71 .size atrac3_iqmf_matrixing,.atrac3_iqmf_matrixing_end-atrac3_iqmf_matrixing
72 72
73 73
74/**************************************************************************** 74/****************************************************************************
75 * atrac3_iqmf_dewindowing(int32_t *out, 75 * atrac3_iqmf_dewindowing(int32_t *out,
76 * int32_t *in, 76 * int32_t *in,
77 * int32_t *win, 77 * int32_t *win,
78 * unsigned int nIn); 78 * unsigned int nIn);
79 * 79 *
80 * Dewindowing step within iqmf of atrac3 synthesis. Reference implementation: 80 * Dewindowing step within iqmf of atrac3 synthesis. Reference implementation:
81 * 81 *
82 * for (j = nIn; j != 0; j--) { 82 * for (j = nIn; j != 0; j--) {
83 * s1 = fixmul32(in[0], win[0]); 83 * s1 = fixmul32(in[0], win[0]);
84 * s2 = fixmul32(in[1], win[1]); 84 * s2 = fixmul32(in[1], win[1]);
85 * for (i = 2; i < 48; i += 2) { 85 * for (i = 2; i < 48; i += 2) {
86 * s1 += fixmul32(in[i ], win[i ]); 86 * s1 += fixmul32(in[i ], win[i ]);
87 * s2 += fixmul32(in[i+1], win[i+1]); 87 * s2 += fixmul32(in[i+1], win[i+1]);
88 * } 88 * }
89 * out[0] = s2 << 1; 89 * out[0] = s2 << 1;
90 * out[1] = s1 << 1; 90 * out[1] = s1 << 1;
91 * in += 2; 91 * in += 2;
92 * out += 2; 92 * out += 2;
93 * } 93 * }
94 * Note: r12 is a scratch register and can be used without restorage. 94 * Note: r12 is a scratch register and can be used without restorage.
95 ****************************************************************************/ 95 ****************************************************************************/
96 .align 2 96 .align 2
97 .global atrac3_iqmf_dewindowing 97 .global atrac3_iqmf_dewindowing
98 .type atrac3_iqmf_dewindowing, %function 98 .type atrac3_iqmf_dewindowing, %function
99 99
100atrac3_iqmf_dewindowing: 100atrac3_iqmf_dewindowing:
101 /* r0 = dest */ 101 /* r0 = dest */
102 /* r1 = input samples */ 102 /* r1 = input samples */
103 /* r2 = window coefficients */ 103 /* r2 = window coefficients */
104 /* r3 = counter */ 104 /* r3 = counter */
105 stmfd sp!, {r4-r9, lr} /* save non-scratch registers */ 105 stmfd sp!, {r4-r9, lr} /* save non-scratch registers */
106 106
107.iqmf_dewindow_outer_loop: /* outer loop 0...counter-1 */ 107.iqmf_dewindow_outer_loop: /* outer loop 0...counter-1 */
108 /* 0.. 7 */ 108 /* 0.. 7 */
109 ldmia r2!, {r4, r5} /* load win[0..1] */ 109 ldmia r2!, {r4, r5} /* load win[0..1] */
110 ldmia r1!, {r6, r7} /* load in[0..1] */ 110 ldmia r1!, {r6, r7} /* load in[0..1] */
111 smull lr , r9, r4, r6 /* s1 = win[0] * in[0] */ 111 smull lr , r9, r4, r6 /* s1 = win[0] * in[0] */
112 smull r12, r8, r5, r7 /* s2 = win[1] * in[1] */ 112 smull r12, r8, r5, r7 /* s2 = win[1] * in[1] */
113 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 113 ldmia r2!, {r4, r5} /* load win[i...i+1] */
114 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 114 ldmia r1!, {r6, r7} /* load in[i...i+1] */
115 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 115 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
116 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 116 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
117 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 117 ldmia r2!, {r4, r5} /* load win[i...i+1] */
118 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 118 ldmia r1!, {r6, r7} /* load in[i...i+1] */
119 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 119 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
120 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 120 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
121 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 121 ldmia r2!, {r4, r5} /* load win[i...i+1] */
122 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 122 ldmia r1!, {r6, r7} /* load in[i...i+1] */
123 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 123 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
124 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 124 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
125 /* 8..15 */ 125 /* 8..15 */
126 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 126 ldmia r2!, {r4, r5} /* load win[i...i+1] */
127 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 127 ldmia r1!, {r6, r7} /* load in[i...i+1] */
128 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 128 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
129 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 129 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
130 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 130 ldmia r2!, {r4, r5} /* load win[i...i+1] */
131 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 131 ldmia r1!, {r6, r7} /* load in[i...i+1] */
132 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 132 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
133 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 133 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
134 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 134 ldmia r2!, {r4, r5} /* load win[i...i+1] */
135 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 135 ldmia r1!, {r6, r7} /* load in[i...i+1] */
136 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 136 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
137 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 137 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
138 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 138 ldmia r2!, {r4, r5} /* load win[i...i+1] */
139 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 139 ldmia r1!, {r6, r7} /* load in[i...i+1] */
140 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 140 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
141 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 141 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
142 /* 16..23 */ 142 /* 16..23 */
143 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 143 ldmia r2!, {r4, r5} /* load win[i...i+1] */
144 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 144 ldmia r1!, {r6, r7} /* load in[i...i+1] */
145 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 145 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
146 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 146 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
147 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 147 ldmia r2!, {r4, r5} /* load win[i...i+1] */
148 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 148 ldmia r1!, {r6, r7} /* load in[i...i+1] */
149 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 149 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
150 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 150 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
151 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 151 ldmia r2!, {r4, r5} /* load win[i...i+1] */
152 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 152 ldmia r1!, {r6, r7} /* load in[i...i+1] */
153 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 153 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
154 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 154 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
155 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 155 ldmia r2!, {r4, r5} /* load win[i...i+1] */
156 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 156 ldmia r1!, {r6, r7} /* load in[i...i+1] */
157 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 157 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
158 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 158 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
159 /* 24..31 */ 159 /* 24..31 */
160 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 160 ldmia r2!, {r4, r5} /* load win[i...i+1] */
161 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 161 ldmia r1!, {r6, r7} /* load in[i...i+1] */
162 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 162 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
163 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 163 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
164 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 164 ldmia r2!, {r4, r5} /* load win[i...i+1] */
165 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 165 ldmia r1!, {r6, r7} /* load in[i...i+1] */
166 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 166 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
167 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 167 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
168 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 168 ldmia r2!, {r4, r5} /* load win[i...i+1] */
169 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 169 ldmia r1!, {r6, r7} /* load in[i...i+1] */
170 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 170 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
171 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 171 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
172 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 172 ldmia r2!, {r4, r5} /* load win[i...i+1] */
173 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 173 ldmia r1!, {r6, r7} /* load in[i...i+1] */
174 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 174 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
175 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 175 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
176 /* 32..39 */ 176 /* 32..39 */
177 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 177 ldmia r2!, {r4, r5} /* load win[i...i+1] */
178 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 178 ldmia r1!, {r6, r7} /* load in[i...i+1] */
179 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 179 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
180 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 180 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
181 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 181 ldmia r2!, {r4, r5} /* load win[i...i+1] */
182 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 182 ldmia r1!, {r6, r7} /* load in[i...i+1] */
183 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 183 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
184 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 184 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
185 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 185 ldmia r2!, {r4, r5} /* load win[i...i+1] */
186 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 186 ldmia r1!, {r6, r7} /* load in[i...i+1] */
187 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 187 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
188 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 188 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
189 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 189 ldmia r2!, {r4, r5} /* load win[i...i+1] */
190 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 190 ldmia r1!, {r6, r7} /* load in[i...i+1] */
191 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 191 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
192 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 192 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
193 /* 40..47 */ 193 /* 40..47 */
194 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 194 ldmia r2!, {r4, r5} /* load win[i...i+1] */
195 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 195 ldmia r1!, {r6, r7} /* load in[i...i+1] */
196 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 196 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
197 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 197 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
198 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 198 ldmia r2!, {r4, r5} /* load win[i...i+1] */
199 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 199 ldmia r1!, {r6, r7} /* load in[i...i+1] */
200 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 200 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
201 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 201 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
202 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 202 ldmia r2!, {r4, r5} /* load win[i...i+1] */
203 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 203 ldmia r1!, {r6, r7} /* load in[i...i+1] */
204 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 204 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
205 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 205 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
206 ldmia r2!, {r4, r5} /* load win[i...i+1] */ 206 ldmia r2!, {r4, r5} /* load win[i...i+1] */
207 ldmia r1!, {r6, r7} /* load in[i...i+1] */ 207 ldmia r1!, {r6, r7} /* load in[i...i+1] */
208 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */ 208 smlal lr , r9, r4, r6 /* s1 = win[i ] * in[i ] */
209 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */ 209 smlal r12, r8, r5, r7 /* s2 = win[i+1] * in[i+1] */
210 210
211 mov lr , lr , lsr #31 211 mov lr , lr , lsr #31
212 orr r9, lr , r9, lsl #1 /* s1 = low>>31 || hi<<1 */ 212 orr r9, lr , r9, lsl #1 /* s1 = low>>31 || hi<<1 */
213 mov r12, r12, lsr #31 213 mov r12, r12, lsr #31
214 orr r8, r12, r8, lsl #1 /* s2 = low>>31 || hi<<1 */ 214 orr r8, r12, r8, lsl #1 /* s2 = low>>31 || hi<<1 */
215 215
216 stmia r0!, {r8, r9} /* store result out[0]=s2, out[1]=s1 */ 216 stmia r0!, {r8, r9} /* store result out[0]=s2, out[1]=s1 */
217 sub r1, r1, #184 /* roll back 64 entries = 184 bytes */ 217 sub r1, r1, #184 /* roll back 64 entries = 184 bytes */
218 sub r2, r2, #192 /* roll back 48 entries = 192 bytes = win[0] */ 218 sub r2, r2, #192 /* roll back 48 entries = 192 bytes = win[0] */
219 219
220 subs r3, r3, #1 /* outer loop -= 1 */ 220 subs r3, r3, #1 /* outer loop -= 1 */
221 bgt .iqmf_dewindow_outer_loop 221 bgt .iqmf_dewindow_outer_loop
222 222
223 ldmpc regs=r4-r9 /* restore registers */ 223 ldmpc regs=r4-r9 /* restore registers */
224 224
225.atrac3_iqmf_dewindowing_end: 225.atrac3_iqmf_dewindowing_end:
226 .size atrac3_iqmf_dewindowing,.atrac3_iqmf_dewindowing_end-atrac3_iqmf_dewindowing 226 .size atrac3_iqmf_dewindowing,.atrac3_iqmf_dewindowing_end-atrac3_iqmf_dewindowing
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-07 17:27:13 +0000