117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
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/* Copyright (C) 2007-2009 Xiph.Org Foundation
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Copyright (C) 2003-2008 Jean-Marc Valin
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Copyright (C) 2007-2008 CSIRO
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Copyright (C) 2013 Parrot */
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/*
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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
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, 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
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef FIXED_ARMv5E_H
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#define FIXED_ARMv5E_H
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#include "fixed_armv4.h"
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/** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
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#undef MULT16_32_Q16
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static OPUS_INLINE opus_val32 MULT16_32_Q16_armv5e(opus_val16 a, opus_val32 b)
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{
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int res;
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__asm__(
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"#MULT16_32_Q16\n\t"
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"smulwb %0, %1, %2\n\t"
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: "=r"(res)
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: "r"(b),"r"(a)
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);
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return res;
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}
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#define MULT16_32_Q16(a, b) (MULT16_32_Q16_armv5e(a, b))
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/** 16x32 multiplication, followed by a 15-bit shift right. Results fits in 32 bits */
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#undef MULT16_32_Q15
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static OPUS_INLINE opus_val32 MULT16_32_Q15_armv5e(opus_val16 a, opus_val32 b)
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{
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int res;
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__asm__(
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"#MULT16_32_Q15\n\t"
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"smulwb %0, %1, %2\n\t"
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: "=r"(res)
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: "r"(b), "r"(a)
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);
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return res<<1;
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}
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#define MULT16_32_Q15(a, b) (MULT16_32_Q15_armv5e(a, b))
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/** 16x32 multiply, followed by a 15-bit shift right and 32-bit add.
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b must fit in 31 bits.
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Result fits in 32 bits. */
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#undef MAC16_32_Q15
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static OPUS_INLINE opus_val32 MAC16_32_Q15_armv5e(opus_val32 c, opus_val16 a,
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opus_val32 b)
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{
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int res;
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__asm__(
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"#MAC16_32_Q15\n\t"
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"smlawb %0, %1, %2, %3;\n"
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: "=r"(res)
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: "r"(b<<1), "r"(a), "r"(c)
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);
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return res;
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}
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#define MAC16_32_Q15(c, a, b) (MAC16_32_Q15_armv5e(c, a, b))
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/** 16x16 multiply-add where the result fits in 32 bits */
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#undef MAC16_16
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static OPUS_INLINE opus_val32 MAC16_16_armv5e(opus_val32 c, opus_val16 a,
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opus_val16 b)
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{
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int res;
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__asm__(
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"#MAC16_16\n\t"
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"smlabb %0, %1, %2, %3;\n"
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: "=r"(res)
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: "r"(a), "r"(b), "r"(c)
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);
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return res;
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}
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#define MAC16_16(c, a, b) (MAC16_16_armv5e(c, a, b))
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/** 16x16 multiplication where the result fits in 32 bits */
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#undef MULT16_16
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static OPUS_INLINE opus_val32 MULT16_16_armv5e(opus_val16 a, opus_val16 b)
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{
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int res;
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__asm__(
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"#MULT16_16\n\t"
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"smulbb %0, %1, %2;\n"
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: "=r"(res)
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: "r"(a), "r"(b)
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);
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return res;
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}
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#define MULT16_16(a, b) (MULT16_16_armv5e(a, b))
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#endif
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