1 /*Copyright (c) 2013, Xiph.Org Foundation and contributors. 2 3 All rights reserved. 4 5 Redistribution and use in source and binary forms, with or without 6 modification, are permitted provided that the following conditions are met: 7 8 * Redistributions of source code must retain the above copyright notice, 9 this list of conditions and the following disclaimer. 10 * Redistributions in binary form must reproduce the above copyright notice, 11 this list of conditions and the following disclaimer in the 12 documentation and/or other materials provided with the distribution. 13 14 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 15 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 18 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 21 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 22 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 23 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 24 POSSIBILITY OF SUCH DAMAGE.*/ 25 26 #ifndef KISS_FFT_ARMv4_H 27 #define KISS_FFT_ARMv4_H 28 29 #if !defined(KISS_FFT_GUTS_H) 30 #error "This file should only be included from _kiss_fft_guts.h" 31 #endif 32 33 #ifdef FIXED_POINT 34 35 #undef C_MUL 36 #define C_MUL(m,a,b) \ 37 do{ \ 38 int br__; \ 39 int bi__; \ 40 int tt__; \ 41 __asm__ __volatile__( \ 42 "#C_MUL\n\t" \ 43 "ldrsh %[br], [%[bp], #0]\n\t" \ 44 "ldm %[ap], {r0,r1}\n\t" \ 45 "ldrsh %[bi], [%[bp], #2]\n\t" \ 46 "smull %[tt], %[mi], r1, %[br]\n\t" \ 47 "smlal %[tt], %[mi], r0, %[bi]\n\t" \ 48 "rsb %[bi], %[bi], #0\n\t" \ 49 "smull %[br], %[mr], r0, %[br]\n\t" \ 50 "mov %[tt], %[tt], lsr #15\n\t" \ 51 "smlal %[br], %[mr], r1, %[bi]\n\t" \ 52 "orr %[mi], %[tt], %[mi], lsl #17\n\t" \ 53 "mov %[br], %[br], lsr #15\n\t" \ 54 "orr %[mr], %[br], %[mr], lsl #17\n\t" \ 55 : [mr]"=r"((m).r), [mi]"=r"((m).i), \ 56 [br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \ 57 : [ap]"r"(&(a)), [bp]"r"(&(b)) \ 58 : "r0", "r1" \ 59 ); \ 60 } \ 61 while(0) 62 63 #undef C_MUL4 64 #define C_MUL4(m,a,b) \ 65 do{ \ 66 int br__; \ 67 int bi__; \ 68 int tt__; \ 69 __asm__ __volatile__( \ 70 "#C_MUL4\n\t" \ 71 "ldrsh %[br], [%[bp], #0]\n\t" \ 72 "ldm %[ap], {r0,r1}\n\t" \ 73 "ldrsh %[bi], [%[bp], #2]\n\t" \ 74 "smull %[tt], %[mi], r1, %[br]\n\t" \ 75 "smlal %[tt], %[mi], r0, %[bi]\n\t" \ 76 "rsb %[bi], %[bi], #0\n\t" \ 77 "smull %[br], %[mr], r0, %[br]\n\t" \ 78 "mov %[tt], %[tt], lsr #17\n\t" \ 79 "smlal %[br], %[mr], r1, %[bi]\n\t" \ 80 "orr %[mi], %[tt], %[mi], lsl #15\n\t" \ 81 "mov %[br], %[br], lsr #17\n\t" \ 82 "orr %[mr], %[br], %[mr], lsl #15\n\t" \ 83 : [mr]"=r"((m).r), [mi]"=r"((m).i), \ 84 [br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \ 85 : [ap]"r"(&(a)), [bp]"r"(&(b)) \ 86 : "r0", "r1" \ 87 ); \ 88 } \ 89 while(0) 90 91 #undef C_MULC 92 #define C_MULC(m,a,b) \ 93 do{ \ 94 int br__; \ 95 int bi__; \ 96 int tt__; \ 97 __asm__ __volatile__( \ 98 "#C_MULC\n\t" \ 99 "ldrsh %[br], [%[bp], #0]\n\t" \ 100 "ldm %[ap], {r0,r1}\n\t" \ 101 "ldrsh %[bi], [%[bp], #2]\n\t" \ 102 "smull %[tt], %[mr], r0, %[br]\n\t" \ 103 "smlal %[tt], %[mr], r1, %[bi]\n\t" \ 104 "rsb %[bi], %[bi], #0\n\t" \ 105 "smull %[br], %[mi], r1, %[br]\n\t" \ 106 "mov %[tt], %[tt], lsr #15\n\t" \ 107 "smlal %[br], %[mi], r0, %[bi]\n\t" \ 108 "orr %[mr], %[tt], %[mr], lsl #17\n\t" \ 109 "mov %[br], %[br], lsr #15\n\t" \ 110 "orr %[mi], %[br], %[mi], lsl #17\n\t" \ 111 : [mr]"=r"((m).r), [mi]"=r"((m).i), \ 112 [br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \ 113 : [ap]"r"(&(a)), [bp]"r"(&(b)) \ 114 : "r0", "r1" \ 115 ); \ 116 } \ 117 while(0) 118 119 #endif /* FIXED_POINT */ 120 121 #endif /* KISS_FFT_ARMv4_H */ 122
