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Annotation of tme/libtme/host/x86/misc-x86.c, revision 1.1

1.1     ! root        1: /* $Id: misc-x86.c,v 1.2 2009/11/08 17:21:18 fredette Exp $ */
        !             2: 
        !             3: /* libtme/host/x86/misc-x86.c - miscellaneous code file for x86 hosts: */
        !             4: 
        !             5: /*
        !             6:  * Copyright (c) 2009 Matt Fredette
        !             7:  * All rights reserved.
        !             8:  *
        !             9:  * Redistribution and use in source and binary forms, with or without
        !            10:  * modification, are permitted provided that the following conditions
        !            11:  * are met:
        !            12:  * 1. Redistributions of source code must retain the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer.
        !            14:  * 2. Redistributions in binary form must reproduce the above copyright
        !            15:  *    notice, this list of conditions and the following disclaimer in the
        !            16:  *    documentation and/or other materials provided with the distribution.
        !            17:  * 3. All advertising materials mentioning features or use of this software
        !            18:  *    must display the following acknowledgement:
        !            19:  *      This product includes software developed by Matt Fredette.
        !            20:  * 4. The name of the author may not be used to endorse or promote products
        !            21:  *    derived from this software without specific prior written permission.
        !            22:  *
        !            23:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            24:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            25:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
        !            26:  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
        !            27:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        !            28:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        !            29:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
        !            31:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
        !            32:  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            33:  * POSSIBILITY OF SUCH DAMAGE.
        !            34:  */
        !            35: 
        !            36: #include <tme/common.h>
        !            37: _TME_RCSID("$Id: misc-x86.c,v 1.2 2009/11/08 17:21:18 fredette Exp $");
        !            38: 
        !            39: /* includes: */
        !            40: #include <tme/misc.h>
        !            41: 
        !            42: #if defined(__GNUC__)
        !            43: 
        !            44: /* this returns the cycle counter: */
        !            45: inline union tme_value64
        !            46: tme_misc_cycles(void)
        !            47: {
        !            48:   unsigned long reg_a;
        !            49:   unsigned long reg_d;
        !            50:   union tme_value64 value;
        !            51: 
        !            52:   asm("        rdtsc   \n"
        !            53:       : "=a" (reg_a), "=d" (reg_d));
        !            54:   value.tme_value64_uint32_lo = reg_a;
        !            55:   value.tme_value64_uint32_hi = reg_d;
        !            56:   return (value);
        !            57: }
        !            58: #define TME_HAVE_MISC_CYCLES
        !            59: 
        !            60: #endif /* !defined(__GNUC__) */

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