Go to the documentation of this file.00001
00002
00003
00004
00005
00006
00007
00008
00009
00012 #include "stdafx.h"
00013
00014 #undef RDTSC_AVAILABLE
00015
00016
00017
00018 #if defined(_MSC_VER) && !defined(RDTSC_AVAILABLE) && !defined(WINCE)
00019 #include <intrin.h>
00020 uint64 ottd_rdtsc()
00021 {
00022 return __rdtsc();
00023 }
00024 #define RDTSC_AVAILABLE
00025 #endif
00026
00027
00028 #if defined (__WATCOMC__) && !defined(RDTSC_AVAILABLE)
00029 unsigned __int64 ottd_rdtsc();
00030 # pragma aux ottd_rdtsc = 0x0F 0x31 value [edx eax] parm nomemory modify exact [edx eax] nomemory;
00031 # define RDTSC_AVAILABLE
00032 #endif
00033
00034
00035 #if (defined(__i386__) || defined(__x86_64__)) && !defined(__DJGPP__) && !defined(RDTSC_AVAILABLE)
00036 uint64 ottd_rdtsc()
00037 {
00038 uint32 high, low;
00039 __asm__ __volatile__ ("rdtsc" : "=a" (low), "=d" (high));
00040 return ((uint64)high << 32) | low;
00041 }
00042 # define RDTSC_AVAILABLE
00043 #endif
00044
00045
00046 #if (defined(__POWERPC__) || defined(__powerpc__)) && !defined(RDTSC_AVAILABLE)
00047 uint64 ottd_rdtsc()
00048 {
00049 uint32 high = 0, high2 = 0, low;
00050
00051
00052
00053
00054 asm volatile (
00055 "mftbu %0\n"
00056 "mftb %1\n"
00057 "mftbu %2\n"
00058 "cmpw %3,%4\n"
00059 "bne- $-16\n"
00060 : "=r" (high), "=r" (low), "=r" (high2)
00061 : "0" (high), "2" (high2)
00062 );
00063 return ((uint64)high << 32) | low;
00064 }
00065 # define RDTSC_AVAILABLE
00066 #endif
00067
00068
00069
00070 #if !defined(RDTSC_AVAILABLE)
00071
00072 # if !defined(_MSC_VER)
00073 #warning "(non-fatal) No support for rdtsc(), you won't be able to profile with TIC/TOC"
00074 # endif
00075 uint64 ottd_rdtsc() {return 0;}
00076 #endif