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Diffstat (limited to 'src/server/util.hpp')
| -rw-r--r-- | src/server/util.hpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/src/server/util.hpp b/src/server/util.hpp new file mode 100644 index 00000000..9aab55ac --- /dev/null +++ b/src/server/util.hpp @@ -0,0 +1,90 @@ +/* This file is part of Ingen. + * Copyright 2007-2011 David Robillard <http://drobilla.net> + * + * Ingen is free software; you can redistribute it and/or modify it under the + * terms of the GNU General Public License as published by the Free Software + * Foundation; either version 2 of the License, or (at your option) any later + * version. + * + * Ingen is distributed in the hope that it will be useful, but WITHOUT ANY + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef INGEN_ENGINE_UTIL_HPP +#define INGEN_ENGINE_UTIL_HPP + +#include <cstdlib> +#include <string> + +#include "raul/log.hpp" +#include "raul/Path.hpp" + +#include "ingen-config.h" + +#include <fenv.h> +#ifdef __SSE__ +#include <xmmintrin.h> +#endif + +#ifdef USE_ASSEMBLY +# if SIZEOF_VOID_P==8 +# define cpuid(a,b,c,d,n) asm("xchgq %%rbx, %1; cpuid; xchgq %%rbx, %1": "=a" (a), "=r" (b), "=c" (c), "=d" (d) : "a" (n)); +# else +# define cpuid(a,b,c,d,n) asm("xchgl %%ebx, %1; cpuid; xchgl %%ebx, %1": "=a" (a), "=r" (b), "=c" (c), "=d" (d) : "a" (n)); +# endif +#endif + +namespace Ingen { +namespace Server { + +/** Set flags to disable denormal processing. + */ +inline void +set_denormal_flags() +{ +#ifdef USE_ASSEMBLY +#ifdef __SSE__ + unsigned long a, b, c, d0, d1; + int stepping, model, family, extfamily; + + cpuid(a,b,c,d1,1); + if (d1 & 1<<25) { /* It has SSE support */ + _MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON); + family = (a >> 8) & 0xf; + extfamily = (a >> 20) & 0xff; + model = (a >> 4) & 0xf; + stepping = a & 0xf; + cpuid(a,b,c,d0,0); + if (b == 0x756e6547) { /* It's an Intel */ + if (family == 15 && extfamily == 0 && model == 0 && stepping < 7) { + return; + } + } + if (d1 & 1<<26) { /* bit 26, SSE2 support */ + _mm_setcsr(_mm_getcsr() | 0x8040); // set DAZ and FZ bits of MXCSR + Raul::info << "Set SSE denormal fix flag" << endl; + } + } else { + Raul::warn << "This code has been built with SSE support, but your processor does" + << " not support the SSE instruction set, exiting." << std::endl; + exit(EXIT_FAILURE); + } +#endif +#endif +} + +static inline std::string +ingen_jack_port_name(const Raul::Path& path) +{ + return path.chop_start("/"); +} + +} // namespace Server +} // namespace Ingen + +#endif // INGEN_ENGINE_UTIL_HPP |