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118 lines
4 KiB
C
118 lines
4 KiB
C
/*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_ARMv5E_H
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#define KISS_FFT_ARMv5E_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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#if defined(__thumb__)||defined(__thumb2__)
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#define LDRD_CONS "Q"
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#else
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#define LDRD_CONS "Uq"
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#endif
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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 mr1__; \
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int mr2__; \
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int mi__; \
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long long aval__; \
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int bval__; \
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__asm__( \
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"#C_MUL\n\t" \
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"ldrd %[aval], %H[aval], %[ap]\n\t" \
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"ldr %[bval], %[bp]\n\t" \
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"smulwb %[mi], %H[aval], %[bval]\n\t" \
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"smulwb %[mr1], %[aval], %[bval]\n\t" \
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"smulwt %[mr2], %H[aval], %[bval]\n\t" \
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"smlawt %[mi], %[aval], %[bval], %[mi]\n\t" \
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: [mr1]"=r"(mr1__), [mr2]"=r"(mr2__), [mi]"=r"(mi__), \
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[aval]"=&r"(aval__), [bval]"=r"(bval__) \
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: [ap]LDRD_CONS(a), [bp]"m"(b) \
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); \
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(m).r = SHL32(SUB32(mr1__, mr2__), 1); \
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(m).i = SHL32(mi__, 1); \
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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 mr1__; \
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int mr2__; \
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int mi__; \
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long long aval__; \
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int bval__; \
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__asm__( \
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"#C_MUL4\n\t" \
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"ldrd %[aval], %H[aval], %[ap]\n\t" \
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"ldr %[bval], %[bp]\n\t" \
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"smulwb %[mi], %H[aval], %[bval]\n\t" \
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"smulwb %[mr1], %[aval], %[bval]\n\t" \
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"smulwt %[mr2], %H[aval], %[bval]\n\t" \
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"smlawt %[mi], %[aval], %[bval], %[mi]\n\t" \
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: [mr1]"=r"(mr1__), [mr2]"=r"(mr2__), [mi]"=r"(mi__), \
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[aval]"=&r"(aval__), [bval]"=r"(bval__) \
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: [ap]LDRD_CONS(a), [bp]"m"(b) \
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); \
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(m).r = SHR32(SUB32(mr1__, mr2__), 1); \
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(m).i = SHR32(mi__, 1); \
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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 mr__; \
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int mi1__; \
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int mi2__; \
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long long aval__; \
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int bval__; \
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__asm__( \
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"#C_MULC\n\t" \
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"ldrd %[aval], %H[aval], %[ap]\n\t" \
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"ldr %[bval], %[bp]\n\t" \
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"smulwb %[mr], %[aval], %[bval]\n\t" \
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"smulwb %[mi1], %H[aval], %[bval]\n\t" \
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"smulwt %[mi2], %[aval], %[bval]\n\t" \
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"smlawt %[mr], %H[aval], %[bval], %[mr]\n\t" \
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: [mr]"=r"(mr__), [mi1]"=r"(mi1__), [mi2]"=r"(mi2__), \
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[aval]"=&r"(aval__), [bval]"=r"(bval__) \
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: [ap]LDRD_CONS(a), [bp]"m"(b) \
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); \
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(m).r = SHL32(mr__, 1); \
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(m).i = SHL32(SUB32(mi1__, mi2__), 1); \
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} \
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while(0)
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#endif /* FIXED_POINT */
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#endif /* KISS_FFT_GUTS_H */
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