1 /* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
18 /****************************************************************************************
19 Portions of this file are derived from the following 3GPP standard:
22 ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
23 Available from http://www.3gpp.org
25 (C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
26 Permission to distribute, modify and use this file under the standard license
27 terms listed above has been obtained from the copyright holder.
28 ****************************************************************************************/
33 ------------------------------------------------------------------------------
36 This file contains all the constant definitions and prototype definitions
37 needed by the Mpy_32 function.
39 ------------------------------------------------------------------------------
42 /*----------------------------------------------------------------------------
43 ; CONTINUE ONLY IF NOT ALREADY DEFINED
44 ----------------------------------------------------------------------------*/
48 /*----------------------------------------------------------------------------
50 ----------------------------------------------------------------------------*/
51 #include "basicop_malloc.h"
53 /*--------------------------------------------------------------------------*/
59 /*----------------------------------------------------------------------------
61 ; Define module specific macros here
62 ----------------------------------------------------------------------------*/
65 /*----------------------------------------------------------------------------
67 ; Include all pre-processor statements here.
68 ----------------------------------------------------------------------------*/
70 /*----------------------------------------------------------------------------
71 ; EXTERNAL VARIABLES REFERENCES
72 ; Declare variables used in this module but defined elsewhere
73 ----------------------------------------------------------------------------*/
75 /*----------------------------------------------------------------------------
77 ----------------------------------------------------------------------------*/
79 /*----------------------------------------------------------------------------
80 ; ENUMERATED TYPEDEF'S
81 ----------------------------------------------------------------------------*/
83 /*----------------------------------------------------------------------------
84 ; STRUCTURES TYPEDEF'S
85 ----------------------------------------------------------------------------*/
87 /*----------------------------------------------------------------------------
88 ; GLOBAL FUNCTION DEFINITIONS
89 ; Function Prototype declaration
90 ----------------------------------------------------------------------------*/
91 #if defined(PV_ARM_V5) /* Instructions for ARM Assembly on ADS*/
93 __inline Word32 Mpy_32(Word16 L_var1_hi,
100 /*----------------------------------------------------------------------------
101 ; Define all local variables
102 ----------------------------------------------------------------------------*/
107 OSCL_UNUSED_ARG(pOverflow);
108 /*----------------------------------------------------------------------------
110 ----------------------------------------------------------------------------*/
111 /* L_product = L_mult (L_var1_hi, L_var2_hi, pOverflow);*/
113 __asm {SMULBB L_product, L_var1_hi, L_var2_hi}
114 __asm {QDADD L_product, 0, L_product}
115 __asm {SMULBB product32, L_var1_hi, L_var2_lo}
117 __asm {QDADD L_sum, L_product, product32}
119 __asm {SMULBB product32, L_var1_lo, L_var2_hi}
121 __asm {QDADD L_sum, L_product, product32}
125 #elif defined(PV_ARM_GCC_V5) /* Instructions for ARM-linux cross-compiler*/
127 static inline Word32 Mpy_32(Word16 L_var1_hi,
133 register Word32 product32;
134 register Word32 L_sum;
135 register Word32 L_product, result;
136 register Word32 ra = L_var1_hi;
137 register Word32 rb = L_var1_lo;
138 register Word32 rc = L_var2_hi;
139 register Word32 rd = L_var2_lo;
143 OSCL_UNUSED_ARG(pOverflow);
145 asm volatile("smulbb %0, %1, %2"
149 asm volatile("mov %0, #0"
153 asm volatile("qdadd %0, %1, %2"
155 : "r"(result), "r"(L_product)
158 asm volatile("smulbb %0, %1, %2"
163 asm volatile("mov %0, %1, ASR #15"
167 asm volatile("qdadd %0, %1, %2"
169 : "r"(L_sum), "r"(ra)
172 asm volatile("smulbb %0, %1, %2"
177 asm volatile("mov %0, %1, ASR #15"
182 asm volatile("qdadd %0, %1, %2"
184 : "r"(L_product), "r"(rb)
190 #else /* C_EQUIVALENT */
192 __inline Word32 Mpy_32(Word16 L_var1_hi,
202 OSCL_UNUSED_ARG(pOverflow);
203 L_product = (Word32) L_var1_hi * L_var2_hi;
205 if (L_product != (Word32) 0x40000000L)
214 /* result = mult (L_var1_hi, L_var2_lo, pOverflow); */
215 product32 = ((Word32) L_var1_hi * L_var2_lo) >> 15;
217 /* L_product = L_mac (L_product, result, 1, pOverflow); */
218 L_sum = L_product + (product32 << 1);
220 if ((L_product ^ product32) > 0)
222 if ((L_sum ^ L_product) < 0)
224 L_sum = (L_product < 0) ? MIN_32 : MAX_32;
230 /* result = mult (L_var1_lo, L_var2_hi, pOverflow); */
231 product32 = ((Word32) L_var1_lo * L_var2_hi) >> 15;
233 /* L_product = L_mac (L_product, result, 1, pOverflow); */
234 L_sum = L_product + (product32 << 1);
236 if ((L_product ^ product32) > 0)
238 if ((L_sum ^ L_product) < 0)
240 L_sum = (L_product < 0) ? MIN_32 : MAX_32;
244 /*----------------------------------------------------------------------------
245 ; Return nothing or data or data pointer
246 ----------------------------------------------------------------------------*/
251 /*----------------------------------------------------------------------------
253 ----------------------------------------------------------------------------*/
258 #endif /* _MPY_32_H_ */