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/* vim:ts=8:sts=4:sw=4:noai:noexpandtab
*
* Processor macros for cross-platform, cross-compiler froyo.
*
* Copyright (c) 2010 Miru Limited.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#if !defined (__PGM_IMPL_FRAMEWORK_H_INSIDE__) && !defined (PGM_COMPILATION)
# error "Only <framework.h> can be included directly."
#endif
#ifndef __PGM_IMPL_PROCESSOR_H__
#define __PGM_IMPL_PROCESSOR_H__
/* Memory prefetch */
#if defined( sun )
static inline void pgm_prefetch (const void *x)
{
asm volatile ( "prefetch [%0], #one_write"
: /* nil */
: "r" (x));
}
static inline void pgm_prefetchw (const void *x)
{
asm volatile ( "prefetch [%0], #n_writes"
: /* nil */
: "r" (x));
}
#elif defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
static inline void pgm_prefetch (const void *x)
{
__builtin_prefetch (x, 0 /* read */, 0 /* no temporal locality */);
}
static inline void pgm_prefetchw (const void *x)
{
__builtin_prefetch (x, 1 /* write */, 3 /* high temporal */);
}
#else
static inline void pgm_prefetch (PGM_GNUC_UNUSED const void *x)
{
}
static inline void pgm_prefetchw (PGM_GNUC_UNUSED const void *x)
{
}
#endif
#endif /* __PGM_IMPL_PROCESSOR_H__ */
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