dlls/kernel32/cpu.c

   1 /*
   2  * What processor?
   3  *
   4  * Copyright 1995,1997 Morten Welinder
   5  * Copyright 1997-1998 Marcus Meissner
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #ifdef HAVE_SYS_TIME_H
  29 # include <sys/time.h>
  30 #endif
  31
  32
  33 #define NONAMELESSUNION
  34 #define NONAMELESSSTRUCT
  35 #include "ntstatus.h"
  36 #define WIN32_NO_STATUS
  37 #include "windef.h"
  38 #include "winbase.h"
  39 #include "winnt.h"
  40 #include "winternl.h"
  41 #include "wine/unicode.h"
  42 #include "wine/debug.h"
  43 #include "ddk/wdm.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(reg);
  46
  47 #define SHARED_DATA     ((KSHARED_USER_DATA*)0x7ffe0000)
  48
  49 /****************************************************************************
  50  *              QueryPerformanceCounter (KERNEL32.@)
  51  *
  52  * Get the current value of the performance counter.
  53  *
  54  * PARAMS
  55  *  counter [O] Destination for the current counter reading
  56  *
  57  * RETURNS
  58  *  Success: TRUE. counter contains the current reading
  59  *  Failure: FALSE.
  60  *
  61  * SEE ALSO
  62  *  See QueryPerformanceFrequency.
  63  */
  64 BOOL WINAPI QueryPerformanceCounter(PLARGE_INTEGER counter)
  65 {
  66     NtQueryPerformanceCounter( counter, NULL );
  67     return TRUE;
  68 }
  69
  70
  71 /****************************************************************************
  72  *              QueryPerformanceFrequency (KERNEL32.@)
  73  *
  74  * Get the resolution of the performance counter.
  75  *
  76  * PARAMS
  77  *  frequency [O] Destination for the counter resolution
  78  *
  79  * RETURNS
  80  *  Success. TRUE. Frequency contains the resolution of the counter.
  81  *  Failure: FALSE.
  82  *
  83  * SEE ALSO
  84  *  See QueryPerformanceCounter.
  85  */
  86 BOOL WINAPI QueryPerformanceFrequency(PLARGE_INTEGER frequency)
  87 {
  88     LARGE_INTEGER counter;
  89     NtQueryPerformanceCounter( &counter, frequency );
  90     return TRUE;
  91 }
  92
  93
  94 /***********************************************************************
  95  *                      GetSystemInfo                   [KERNEL32.@]
  96  *
  97  * Get information about the system.
  98  *
  99  * RETURNS
 100  *  Nothing.
 101  *
 102  * NOTES
 103  * On the first call it creates cached values, so it doesn't have to determine
 104  * them repeatedly. On Linux, the "/proc/cpuinfo" special file is used.
 105  *
 106  * It also creates a cached flag array for IsProcessorFeaturePresent().
 107  */
 108 VOID WINAPI GetSystemInfo(
 109         LPSYSTEM_INFO si        /* [out] Destination for system information, may not be NULL */)
 110 {
 111     NTSTATUS                 nts;
 112     SYSTEM_BASIC_INFORMATION sbi;
 113     SYSTEM_CPU_INFORMATION   sci;
 114
 115     TRACE("si=0x%p\n", si);
 116
 117     if ((nts = NtQuerySystemInformation( SystemBasicInformation, &sbi, sizeof(sbi), NULL )) != STATUS_SUCCESS ||
 118         (nts = NtQuerySystemInformation( SystemCpuInformation, &sci, sizeof(sci), NULL )) != STATUS_SUCCESS)
 119     {
 120         SetLastError(RtlNtStatusToDosError(nts));
 121         return;
 122     }
 123
 124     si->u.s.wProcessorArchitecture  = sci.Architecture;
 125     si->u.s.wReserved               = 0;
 126     si->dwPageSize                  = sbi.PageSize;
 127     si->lpMinimumApplicationAddress = sbi.LowestUserAddress;
 128     si->lpMaximumApplicationAddress = sbi.HighestUserAddress;
 129     si->dwActiveProcessorMask       = sbi.ActiveProcessorsAffinityMask;
 130     si->dwNumberOfProcessors        = sbi.NumberOfProcessors;
 131
 132     switch (sci.Architecture)
 133     {
 134     case PROCESSOR_ARCHITECTURE_INTEL:
 135         switch (sci.Level)
 136         {
 137         case 3:  si->dwProcessorType = PROCESSOR_INTEL_386;     break;
 138         case 4:  si->dwProcessorType = PROCESSOR_INTEL_486;     break;
 139         case 5:
 140         case 6:  si->dwProcessorType = PROCESSOR_INTEL_PENTIUM; break;
 141         default: si->dwProcessorType = PROCESSOR_INTEL_PENTIUM; break;
 142         }
 143         break;
 144     case PROCESSOR_ARCHITECTURE_PPC:
 145         switch (sci.Level)
 146         {
 147         case 1:  si->dwProcessorType = PROCESSOR_PPC_601;       break;
 148         case 3:
 149         case 6:  si->dwProcessorType = PROCESSOR_PPC_603;       break;
 150         case 4:  si->dwProcessorType = PROCESSOR_PPC_604;       break;
 151         case 9:  si->dwProcessorType = PROCESSOR_PPC_604;       break;
 152         case 20: si->dwProcessorType = PROCESSOR_PPC_620;       break;
 153         default: si->dwProcessorType = 0;
 154         }
 155         break;
 156     case PROCESSOR_ARCHITECTURE_AMD64:
 157         si->dwProcessorType = PROCESSOR_AMD_X8664;
 158         break;
 159     default: FIXME("Unknown processor architecture %x\n", sci.Architecture);
 160     }
 161     si->dwAllocationGranularity     = sbi.AllocationGranularity;
 162     si->wProcessorLevel             = sci.Level;
 163     si->wProcessorRevision          = sci.Revision;
 164 }
 165
 166
 167 /***********************************************************************
 168  *                      GetNativeSystemInfo             [KERNEL32.@]
 169  */
 170 VOID WINAPI GetNativeSystemInfo(
 171     LPSYSTEM_INFO si    /* [out] Destination for system information, may not be NULL */)
 172 {
 173     BOOL is_wow64;
 174
 175     GetSystemInfo(si);
 176
 177     IsWow64Process(GetCurrentProcess(), &is_wow64);
 178     if (is_wow64)
 179     {
 180         if (si->u.s.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_INTEL)
 181         {
 182             si->u.s.wProcessorArchitecture = PROCESSOR_ARCHITECTURE_AMD64;
 183             si->dwProcessorType = PROCESSOR_AMD_X8664;
 184         }
 185         else
 186         {
 187             FIXME("Add the proper information for %d in wow64 mode\n",
 188                   si->u.s.wProcessorArchitecture);
 189         }
 190     }
 191 }
 192
 193 /***********************************************************************
 194  *                      IsProcessorFeaturePresent       [KERNEL32.@]
 195  *
 196  * Determine if the cpu supports a given feature.
 197  *
 198  * RETURNS
 199  *  TRUE, If the processor supports feature,
 200  *  FALSE otherwise.
 201  */
 202 BOOL WINAPI IsProcessorFeaturePresent (
 203         DWORD feature   /* [in] Feature number, (PF_ constants from "winnt.h") */)
 204 {
 205   if (feature < 64)
 206     return SHARED_DATA->ProcessorFeatures[feature];
 207   else
 208     return FALSE;
 209 }