ref: 5d09366104fd5e12c91d66a1e4f56372687beab3
dir: /celt/mips/fixed_generic_mipsr1.h/
/* Copyright (C) 2007-2009 Xiph.Org Foundation Copyright (C) 2003-2008 Jean-Marc Valin Copyright (C) 2007-2008 CSIRO */ /** @file fixed_generic.h @brief Generic fixed-point operations */ /* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef CELT_FIXED_GENERIC_MIPSR1_H #define CELT_FIXED_GENERIC_MIPSR1_H #undef MULT16_32_Q15_ADD static inline int MULT16_32_Q15_ADD(int a, int b, int c, int d) { int m; asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b)); asm volatile("madd $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d)); asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15)); return m; } #undef MULT16_32_Q15_SUB static inline int MULT16_32_Q15_SUB(int a, int b, int c, int d) { int m; asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b)); asm volatile("msub $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d)); asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15)); return m; } #undef MULT16_16_Q15_ADD static inline int MULT16_16_Q15_ADD(int a, int b, int c, int d) { int m; asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b)); asm volatile("madd $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d)); asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15)); return m; } #undef MULT16_16_Q15_SUB static inline int MULT16_16_Q15_SUB(int a, int b, int c, int d) { int m; asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b)); asm volatile("msub $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d)); asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15)); return m; } #undef MULT16_32_Q16 static inline int MULT16_32_Q16(int a, int b) { int c; asm volatile("MULT $ac1,%0, %1" : : "r" (a), "r" (b)); asm volatile("EXTR.W %0,$ac1, %1" : "=r" (c): "i" (16)); return c; } #undef MULT16_32_P16 static inline int MULT16_32_P16(int a, int b) { int c; asm volatile("MULT $ac1, %0, %1" : : "r" (a), "r" (b)); asm volatile("EXTR_R.W %0,$ac1, %1" : "=r" (c): "i" (16)); return c; } #undef MULT16_32_Q15 static inline int MULT16_32_Q15(int a, int b) { int c; asm volatile("MULT $ac1, %0, %1" : : "r" (a), "r" (b)); asm volatile("EXTR.W %0,$ac1, %1" : "=r" (c): "i" (15)); return c; } #undef MULT32_32_Q31 static inline int MULT32_32_Q31(int a, int b) { int r; asm volatile("MULT $ac1, %0, %1" : : "r" (a), "r" (b)); asm volatile("EXTR.W %0,$ac1, %1" : "=r" (r): "i" (31)); return r; } #undef PSHR32 static inline int PSHR32(int a, int shift) { int r; asm volatile ("SHRAV_R.W %0, %1, %2" :"=r" (r): "r" (a), "r" (shift)); return r; } #undef MULT16_16_P15 static inline int MULT16_16_P15(int a, int b) { int r; asm volatile ("mul %0, %1, %2" :"=r" (r): "r" (a), "r" (b)); asm volatile ("SHRA_R.W %0, %1, %2" : "+r" (r): "0" (r), "i"(15)); return r; } #endif /* CELT_FIXED_GENERIC_MIPSR1_H */