122 lines
4.4 KiB
C
122 lines
4.4 KiB
C
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/*Copyright (c) 2013, Xiph.Org Foundation and contributors.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.*/
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#ifndef KISS_FFT_ARMv4_H
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#define KISS_FFT_ARMv4_H
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#if !defined(KISS_FFT_GUTS_H)
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#error "This file should only be included from _kiss_fft_guts.h"
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#endif
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#ifdef FIXED_POINT
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#undef C_MUL
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#define C_MUL(m,a,b) \
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do{ \
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int br__; \
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int bi__; \
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int tt__; \
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__asm__ __volatile__( \
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"#C_MUL\n\t" \
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"ldrsh %[br], [%[bp], #0]\n\t" \
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"ldm %[ap], {r0,r1}\n\t" \
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"ldrsh %[bi], [%[bp], #2]\n\t" \
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"smull %[tt], %[mi], r1, %[br]\n\t" \
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"smlal %[tt], %[mi], r0, %[bi]\n\t" \
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"rsb %[bi], %[bi], #0\n\t" \
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"smull %[br], %[mr], r0, %[br]\n\t" \
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"mov %[tt], %[tt], lsr #15\n\t" \
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"smlal %[br], %[mr], r1, %[bi]\n\t" \
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"orr %[mi], %[tt], %[mi], lsl #17\n\t" \
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"mov %[br], %[br], lsr #15\n\t" \
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"orr %[mr], %[br], %[mr], lsl #17\n\t" \
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: [mr]"=r"((m).r), [mi]"=r"((m).i), \
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[br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \
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: [ap]"r"(&(a)), [bp]"r"(&(b)) \
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: "r0", "r1" \
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); \
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} \
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while(0)
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#undef C_MUL4
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#define C_MUL4(m,a,b) \
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do{ \
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int br__; \
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int bi__; \
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int tt__; \
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__asm__ __volatile__( \
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"#C_MUL4\n\t" \
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"ldrsh %[br], [%[bp], #0]\n\t" \
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"ldm %[ap], {r0,r1}\n\t" \
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"ldrsh %[bi], [%[bp], #2]\n\t" \
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"smull %[tt], %[mi], r1, %[br]\n\t" \
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"smlal %[tt], %[mi], r0, %[bi]\n\t" \
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"rsb %[bi], %[bi], #0\n\t" \
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"smull %[br], %[mr], r0, %[br]\n\t" \
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"mov %[tt], %[tt], lsr #17\n\t" \
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"smlal %[br], %[mr], r1, %[bi]\n\t" \
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"orr %[mi], %[tt], %[mi], lsl #15\n\t" \
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"mov %[br], %[br], lsr #17\n\t" \
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"orr %[mr], %[br], %[mr], lsl #15\n\t" \
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: [mr]"=r"((m).r), [mi]"=r"((m).i), \
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[br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \
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: [ap]"r"(&(a)), [bp]"r"(&(b)) \
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: "r0", "r1" \
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); \
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} \
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while(0)
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#undef C_MULC
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#define C_MULC(m,a,b) \
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do{ \
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int br__; \
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int bi__; \
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int tt__; \
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__asm__ __volatile__( \
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"#C_MULC\n\t" \
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"ldrsh %[br], [%[bp], #0]\n\t" \
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"ldm %[ap], {r0,r1}\n\t" \
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"ldrsh %[bi], [%[bp], #2]\n\t" \
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"smull %[tt], %[mr], r0, %[br]\n\t" \
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"smlal %[tt], %[mr], r1, %[bi]\n\t" \
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"rsb %[bi], %[bi], #0\n\t" \
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"smull %[br], %[mi], r1, %[br]\n\t" \
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"mov %[tt], %[tt], lsr #15\n\t" \
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"smlal %[br], %[mi], r0, %[bi]\n\t" \
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"orr %[mr], %[tt], %[mr], lsl #17\n\t" \
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"mov %[br], %[br], lsr #15\n\t" \
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"orr %[mi], %[br], %[mi], lsl #17\n\t" \
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: [mr]"=r"((m).r), [mi]"=r"((m).i), \
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[br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \
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: [ap]"r"(&(a)), [bp]"r"(&(b)) \
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: "r0", "r1" \
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); \
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} \
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while(0)
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#endif /* FIXED_POINT */
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#endif /* KISS_FFT_ARMv4_H */
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