Go to the documentation of this file.00001
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00012 #include "stdafx.h"
00013 #include "core/bitmath_func.hpp"
00014
00015 #undef RDTSC_AVAILABLE
00016
00017
00018
00019 #if defined(_MSC_VER) && !defined(RDTSC_AVAILABLE) && !defined(WINCE)
00020 #include <intrin.h>
00021 uint64 ottd_rdtsc()
00022 {
00023 return __rdtsc();
00024 }
00025 #define RDTSC_AVAILABLE
00026 #endif
00027
00028
00029 #if defined (__WATCOMC__) && !defined(RDTSC_AVAILABLE)
00030 unsigned __int64 ottd_rdtsc();
00031 # pragma aux ottd_rdtsc = 0x0F 0x31 value [edx eax] parm nomemory modify exact [edx eax] nomemory;
00032 # define RDTSC_AVAILABLE
00033 #endif
00034
00035
00036 #if (defined(__i386__) || defined(__x86_64__)) && !defined(__DJGPP__) && !defined(RDTSC_AVAILABLE)
00037 uint64 ottd_rdtsc()
00038 {
00039 uint32 high, low;
00040 __asm__ __volatile__ ("rdtsc" : "=a" (low), "=d" (high));
00041 return ((uint64)high << 32) | low;
00042 }
00043 # define RDTSC_AVAILABLE
00044 #endif
00045
00046
00047 #if (defined(__POWERPC__) || defined(__powerpc__)) && !defined(RDTSC_AVAILABLE)
00048 uint64 ottd_rdtsc()
00049 {
00050 uint32 high = 0, high2 = 0, low;
00051
00052
00053
00054
00055 asm volatile (
00056 "mftbu %0\n"
00057 "mftb %1\n"
00058 "mftbu %2\n"
00059 "cmpw %3,%4\n"
00060 "bne- $-16\n"
00061 : "=r" (high), "=r" (low), "=r" (high2)
00062 : "0" (high), "2" (high2)
00063 );
00064 return ((uint64)high << 32) | low;
00065 }
00066 # define RDTSC_AVAILABLE
00067 #endif
00068
00069
00070
00071 #if !defined(RDTSC_AVAILABLE)
00072
00073 # if !defined(_MSC_VER)
00074 #warning "(non-fatal) No support for rdtsc(), you won't be able to profile with TIC/TOC"
00075 # endif
00076 uint64 ottd_rdtsc() {return 0;}
00077 #endif
00078
00079
00091 #if defined(_MSC_VER)
00092 void ottd_cpuid(int info[4], int type)
00093 {
00094 __cpuid(info, type);
00095 }
00096 #elif defined(__x86_64__) || defined(__i386)
00097 void ottd_cpuid(int info[4], int type)
00098 {
00099 #if defined(__i386) && defined(__PIC__)
00100
00101
00102
00103
00104
00105
00106 __asm__ __volatile__ (
00107 "xchgl %%ebx, %1 \n\t"
00108 "cpuid \n\t"
00109 "xchgl %%ebx, %1 \n\t"
00110 : "=a" (info[0]), "=r" (info[1]), "=c" (info[2]), "=d" (info[3])
00111
00112
00113
00114 : "a" (type)
00115 );
00116 #else
00117 __asm__ __volatile__ (
00118 "cpuid \n\t"
00119 : "=a" (info[0]), "=b" (info[1]), "=c" (info[2]), "=d" (info[3])
00120 : "a" (type)
00121 );
00122 #endif
00123 }
00124 #else
00125 void ottd_cpuid(int info[4], int type)
00126 {
00127 info[0] = info[1] = info[2] = info[3] = 0;
00128 }
00129 #endif
00130
00131 bool HasCPUIDFlag(uint type, uint index, uint bit)
00132 {
00133 int cpu_info[4] = {-1};
00134 ottd_cpuid(cpu_info, 0);
00135 uint max_info_type = cpu_info[0];
00136 if (max_info_type < type) return false;
00137
00138 ottd_cpuid(cpu_info, type);
00139 return HasBit(cpu_info[index], bit);
00140 }