You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
2.3 KiB
73 lines
2.3 KiB
/******************************************************************************
|
|
*
|
|
* Copyright © International Business Machines Corp., 2006-2008
|
|
*
|
|
* This program 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.
|
|
*
|
|
* This program 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 more 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
* NAME
|
|
* libtsc.h
|
|
*
|
|
* DESCRIPTION
|
|
*
|
|
* USAGE:
|
|
* To be included in some testcases.
|
|
*
|
|
* AUTHOR
|
|
* Darren Hart <dvhltc@us.ibm.com>
|
|
* Giuseppe Cavallaro <peppe.cavallarost.com>
|
|
*
|
|
* HISTORY
|
|
* It directly comes from the librttest.h (see its HISTORY).
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#undef TSC_UNSUPPORTED
|
|
|
|
/* TSC macros */
|
|
#if defined(__i386__)
|
|
#define rdtscll(val) __asm__ __volatile__("rdtsc" : "=A" (val))
|
|
#elif defined(__x86_64__)
|
|
#define rdtscll(val) \
|
|
do { \
|
|
uint32_t low, high; \
|
|
__asm__ __volatile__ ("rdtsc" : "=a" (low), "=d" (high)); \
|
|
val = (uint64_t)high << 32 | low; \
|
|
} while (0)
|
|
#elif defined(__powerpc__)
|
|
#if defined(__powerpc64__) /* 64bit version */
|
|
#define rdtscll(val) \
|
|
do { \
|
|
__asm__ __volatile__ ("mfspr %0, 268" : "=r" (val)); \
|
|
} while (0)
|
|
#else /*__powerpc__ 32bit version */
|
|
#define rdtscll(val) \
|
|
do { \
|
|
uint32_t tbhi, tblo ; \
|
|
__asm__ __volatile__ ("mftbu %0" : "=r" (tbhi)); \
|
|
__asm__ __volatile__ ("mftbl %0" : "=r" (tblo)); \
|
|
val = 1000 * ((uint64_t) tbhi << 32) | tblo; \
|
|
} while (0)
|
|
#endif
|
|
#else
|
|
#warning TSC UNSUPPORTED
|
|
/* All tests will be compiled also for the
|
|
* architecture without TSC support (e.g. SH).
|
|
* At run-time these will fail with ENOTSUP.
|
|
*/
|
|
#define rdtscll(val) do { } while (0)
|
|
#define TSC_UNSUPPORTED
|
|
#endif
|
|
|