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Annotation of tme/libtme/host/x86/misc-x86.c, revision 1.1.1.1

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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