/* * Portable interface to the CPU cycle counter * * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine * * Copyright (C) 2009 Paul Bakker * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the names of PolarSSL or XySSL nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "polarssl/config.h" #if defined(POLARSSL_TIMING_C) #include "polarssl/timing.h" #if defined(WIN32) #include #include struct _hr_time { LARGE_INTEGER start; }; #else #include #include #include #include #include struct _hr_time { struct timeval start; }; #endif #if (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__) unsigned long hardclock( void ) { unsigned long tsc; __asm rdtsc __asm mov [tsc], eax return( tsc ); } #else #if defined(__GNUC__) && defined(__i386__) unsigned long hardclock( void ) { unsigned long tsc; asm( "rdtsc" : "=a" (tsc) ); return( tsc ); } #else #if defined(__GNUC__) && (defined(__amd64__) || defined(__x86_64__)) unsigned long hardclock( void ) { unsigned long lo, hi; asm( "rdtsc" : "=a" (lo), "=d" (hi) ); return( lo | (hi << 32) ); } #else #if defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__)) unsigned long hardclock( void ) { unsigned long tbl, tbu0, tbu1; do { asm( "mftbu %0" : "=r" (tbu0) ); asm( "mftb %0" : "=r" (tbl ) ); asm( "mftbu %0" : "=r" (tbu1) ); } while( tbu0 != tbu1 ); return( tbl ); } #else #if defined(__GNUC__) && defined(__sparc__) unsigned long hardclock( void ) { unsigned long tick; asm( ".byte 0x83, 0x41, 0x00, 0x00" ); asm( "mov %%g1, %0" : "=r" (tick) ); return( tick ); } #else #if defined(__GNUC__) && defined(__alpha__) unsigned long hardclock( void ) { unsigned long cc; asm( "rpcc %0" : "=r" (cc) ); return( cc & 0xFFFFFFFF ); } #else #if defined(__GNUC__) && defined(__ia64__) unsigned long hardclock( void ) { unsigned long itc; asm( "mov %0 = ar.itc" : "=r" (itc) ); return( itc ); } #else static int hardclock_init = 0; static struct timeval tv_init; unsigned long hardclock( void ) { struct timeval tv_cur; if( hardclock_init == 0 ) { gettimeofday( &tv_init, NULL ); hardclock_init = 1; } gettimeofday( &tv_cur, NULL ); return( ( tv_cur.tv_sec - tv_init.tv_sec ) * 1000000 + ( tv_cur.tv_usec - tv_init.tv_usec ) ); } #endif /* generic */ #endif /* IA-64 */ #endif /* Alpha */ #endif /* SPARC8 */ #endif /* PowerPC */ #endif /* AMD64 */ #endif /* i586+ */ int alarmed = 0; #if defined(WIN32) unsigned long get_timer( struct hr_time *val, int reset ) { unsigned long delta; LARGE_INTEGER offset, hfreq; struct _hr_time *t = (struct _hr_time *) val; QueryPerformanceCounter( &offset ); QueryPerformanceFrequency( &hfreq ); delta = (unsigned long)( ( 1000 * ( offset.QuadPart - t->start.QuadPart ) ) / hfreq.QuadPart ); if( reset ) QueryPerformanceCounter( &t->start ); return( delta ); } DWORD WINAPI TimerProc( LPVOID uElapse ) { Sleep( (DWORD) uElapse ); alarmed = 1; return( TRUE ); } void set_alarm( int seconds ) { DWORD ThreadId; alarmed = 0; CloseHandle( CreateThread( NULL, 0, TimerProc, (LPVOID) ( seconds * 1000 ), 0, &ThreadId ) ); } void m_sleep( int milliseconds ) { Sleep( milliseconds ); } #else unsigned long get_timer( struct hr_time *val, int reset ) { unsigned long delta; struct timeval offset; struct _hr_time *t = (struct _hr_time *) val; gettimeofday( &offset, NULL ); delta = ( offset.tv_sec - t->start.tv_sec ) * 1000 + ( offset.tv_usec - t->start.tv_usec ) / 1000; if( reset ) { t->start.tv_sec = offset.tv_sec; t->start.tv_usec = offset.tv_usec; } return( delta ); } static void sighandler( int signum ) { alarmed = 1; signal( signum, sighandler ); } void set_alarm( int seconds ) { alarmed = 0; signal( SIGALRM, sighandler ); alarm( seconds ); } void m_sleep( int milliseconds ) { struct timeval tv; tv.tv_sec = milliseconds / 1000; tv.tv_usec = milliseconds * 1000; select( 0, NULL, NULL, NULL, &tv ); } #endif #endif 'n80' href='#n80'>80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177