cannam@154: /* Copyright (C) 2007-2009 Xiph.Org Foundation
cannam@154:    Copyright (C) 2003-2008 Jean-Marc Valin
cannam@154:    Copyright (C) 2007-2008 CSIRO
cannam@154:    Copyright (C) 2013      Parrot */
cannam@154: /*
cannam@154:    Redistribution and use in source and binary forms, with or without
cannam@154:    modification, are permitted provided that the following conditions
cannam@154:    are met:
cannam@154: 
cannam@154:    - Redistributions of source code must retain the above copyright
cannam@154:    notice, this list of conditions and the following disclaimer.
cannam@154: 
cannam@154:    - Redistributions in binary form must reproduce the above copyright
cannam@154:    notice, this list of conditions and the following disclaimer in the
cannam@154:    documentation and/or other materials provided with the distribution.
cannam@154: 
cannam@154:    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
cannam@154:    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
cannam@154:    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
cannam@154:    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
cannam@154:    OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
cannam@154:    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
cannam@154:    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
cannam@154:    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
cannam@154:    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
cannam@154:    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
cannam@154:    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
cannam@154: */
cannam@154: 
cannam@154: #ifndef FIXED_ARMv5E_H
cannam@154: #define FIXED_ARMv5E_H
cannam@154: 
cannam@154: #include "fixed_armv4.h"
cannam@154: 
cannam@154: /** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
cannam@154: #undef MULT16_32_Q16
cannam@154: static OPUS_INLINE opus_val32 MULT16_32_Q16_armv5e(opus_val16 a, opus_val32 b)
cannam@154: {
cannam@154:   int res;
cannam@154:   __asm__(
cannam@154:       "#MULT16_32_Q16\n\t"
cannam@154:       "smulwb %0, %1, %2\n\t"
cannam@154:       : "=r"(res)
cannam@154:       : "r"(b),"r"(a)
cannam@154:   );
cannam@154:   return res;
cannam@154: }
cannam@154: #define MULT16_32_Q16(a, b) (MULT16_32_Q16_armv5e(a, b))
cannam@154: 
cannam@154: 
cannam@154: /** 16x32 multiplication, followed by a 15-bit shift right. Results fits in 32 bits */
cannam@154: #undef MULT16_32_Q15
cannam@154: static OPUS_INLINE opus_val32 MULT16_32_Q15_armv5e(opus_val16 a, opus_val32 b)
cannam@154: {
cannam@154:   int res;
cannam@154:   __asm__(
cannam@154:       "#MULT16_32_Q15\n\t"
cannam@154:       "smulwb %0, %1, %2\n\t"
cannam@154:       : "=r"(res)
cannam@154:       : "r"(b), "r"(a)
cannam@154:   );
cannam@154:   return SHL32(res,1);
cannam@154: }
cannam@154: #define MULT16_32_Q15(a, b) (MULT16_32_Q15_armv5e(a, b))
cannam@154: 
cannam@154: 
cannam@154: /** 16x32 multiply, followed by a 15-bit shift right and 32-bit add.
cannam@154:     b must fit in 31 bits.
cannam@154:     Result fits in 32 bits. */
cannam@154: #undef MAC16_32_Q15
cannam@154: static OPUS_INLINE opus_val32 MAC16_32_Q15_armv5e(opus_val32 c, opus_val16 a,
cannam@154:  opus_val32 b)
cannam@154: {
cannam@154:   int res;
cannam@154:   __asm__(
cannam@154:       "#MAC16_32_Q15\n\t"
cannam@154:       "smlawb %0, %1, %2, %3;\n"
cannam@154:       : "=r"(res)
cannam@154:       : "r"(SHL32(b,1)), "r"(a), "r"(c)
cannam@154:   );
cannam@154:   return res;
cannam@154: }
cannam@154: #define MAC16_32_Q15(c, a, b) (MAC16_32_Q15_armv5e(c, a, b))
cannam@154: 
cannam@154: /** 16x32 multiply, followed by a 16-bit shift right and 32-bit add.
cannam@154:     Result fits in 32 bits. */
cannam@154: #undef MAC16_32_Q16
cannam@154: static OPUS_INLINE opus_val32 MAC16_32_Q16_armv5e(opus_val32 c, opus_val16 a,
cannam@154:  opus_val32 b)
cannam@154: {
cannam@154:   int res;
cannam@154:   __asm__(
cannam@154:       "#MAC16_32_Q16\n\t"
cannam@154:       "smlawb %0, %1, %2, %3;\n"
cannam@154:       : "=r"(res)
cannam@154:       : "r"(b), "r"(a), "r"(c)
cannam@154:   );
cannam@154:   return res;
cannam@154: }
cannam@154: #define MAC16_32_Q16(c, a, b) (MAC16_32_Q16_armv5e(c, a, b))
cannam@154: 
cannam@154: /** 16x16 multiply-add where the result fits in 32 bits */
cannam@154: #undef MAC16_16
cannam@154: static OPUS_INLINE opus_val32 MAC16_16_armv5e(opus_val32 c, opus_val16 a,
cannam@154:  opus_val16 b)
cannam@154: {
cannam@154:   int res;
cannam@154:   __asm__(
cannam@154:       "#MAC16_16\n\t"
cannam@154:       "smlabb %0, %1, %2, %3;\n"
cannam@154:       : "=r"(res)
cannam@154:       : "r"(a), "r"(b), "r"(c)
cannam@154:   );
cannam@154:   return res;
cannam@154: }
cannam@154: #define MAC16_16(c, a, b) (MAC16_16_armv5e(c, a, b))
cannam@154: 
cannam@154: /** 16x16 multiplication where the result fits in 32 bits */
cannam@154: #undef MULT16_16
cannam@154: static OPUS_INLINE opus_val32 MULT16_16_armv5e(opus_val16 a, opus_val16 b)
cannam@154: {
cannam@154:   int res;
cannam@154:   __asm__(
cannam@154:       "#MULT16_16\n\t"
cannam@154:       "smulbb %0, %1, %2;\n"
cannam@154:       : "=r"(res)
cannam@154:       : "r"(a), "r"(b)
cannam@154:   );
cannam@154:   return res;
cannam@154: }
cannam@154: #define MULT16_16(a, b) (MULT16_16_armv5e(a, b))
cannam@154: 
cannam@154: #ifdef OPUS_ARM_INLINE_MEDIA
cannam@154: 
cannam@154: #undef SIG2WORD16
cannam@154: static OPUS_INLINE opus_val16 SIG2WORD16_armv6(opus_val32 x)
cannam@154: {
cannam@154:    celt_sig res;
cannam@154:    __asm__(
cannam@154:        "#SIG2WORD16\n\t"
cannam@154:        "ssat %0, #16, %1, ASR #12\n\t"
cannam@154:        : "=r"(res)
cannam@154:        : "r"(x+2048)
cannam@154:    );
cannam@154:    return EXTRACT16(res);
cannam@154: }
cannam@154: #define SIG2WORD16(x) (SIG2WORD16_armv6(x))
cannam@154: 
cannam@154: #endif /* OPUS_ARM_INLINE_MEDIA */
cannam@154: 
cannam@154: #endif