lib/kernel32/misc/sysinfo.c

   1 /* $Id$
   2  *
   3  * reactos/lib/kernel32/misc/sysinfo.c
   4  *
   5  */
   6 #include <ddk/ntddk.h>
   7
   8 #include <kernel32/kernel32.h>
   9 #include <kernel32/error.h>
  10
  11 #define WIN32_LEAN_AND_MEAN
  12 #include <windows.h>
  13
  14
  15 #define PV_NT351 0x00030033
  16
  17 VOID
  18 STDCALL
  19 GetSystemInfo (
  20         LPSYSTEM_INFO   Si
  21         )
  22 {
  23         SYSTEM_BASIC_INFORMATION        Sbi;
  24         SYSTEM_PROCESSOR_INFORMATION    Spi;
  25         DWORD                           ProcessVersion;
  26         NTSTATUS                        Status;
  27
  28         RtlZeroMemory (Si, sizeof (SYSTEM_INFO));
  29         Status = NtQuerySystemInformation (
  30                         SystemBasicInformation, /* 0 */
  31                         & Sbi,
  32                         sizeof Sbi, /* 44 */
  33                         0
  34                         );
  35         if (STATUS_SUCCESS != Status)
  36         {
  37                 SetLastErrorByStatus (Status);
  38                 return;
  39         }
  40         Status = NtQuerySystemInformation (
  41                         SystemProcessorInformation, /* 1 */
  42                         & Spi,
  43                         sizeof Spi, /* 12 */
  44                         0
  45                         );
  46         if (STATUS_SUCCESS != Status)
  47         {
  48                 SetLastErrorByStatus (Status);
  49                 return;
  50         }
  51         /*
  52          *      PROCESSOR_ARCHITECTURE_INTEL 0
  53          *      PROCESSOR_ARCHITECTURE_MIPS  1
  54          *      PROCESSOR_ARCHITECTURE_ALPHA 2
  55          *      PROCESSOR_ARCHITECTURE_PPC   3
  56          *      PROCESSOR_ARCHITECTURE_UNKNOWN 0xFFFF
  57          */
  58         Si->u.s.wProcessorArchitecture  = Spi.ProcessorArchitecture;
  59         /* For future use: always zero */
  60         Si->u.s.wReserved               = 0;
  61         Si->dwPageSize                  = Sbi.PageSize;
  62         Si->lpMinimumApplicationAddress = (PVOID)Sbi.MinimumUserModeAddress;
  63         Si->lpMaximumApplicationAddress = (PVOID)Sbi.MaximumUserModeAddress;
  64         Si->dwActiveProcessorMask       = Sbi.ActiveProcessorsAffinityMask;
  65         Si->dwNumberOfProcessors        = Sbi.NumberOfProcessors;
  66         /*
  67          * Compatibility (no longer relevant):
  68          *      PROCESSOR_INTEL_386     386
  69          *      PROCESSOR_INTEL_486     486
  70          *      PROCESSOR_INTEL_PENTIUM 586
  71          *      PROCESSOR_MIPS_R4000    4000
  72          *      PROCESSOR_ALPHA_21064   21064
  73          */
  74         switch (Spi.ProcessorArchitecture)
  75         {
  76         case PROCESSOR_ARCHITECTURE_INTEL:
  77                 switch (Spi.ProcessorLevel)
  78                 {
  79                 case 3:
  80                         Si->dwProcessorType = PROCESSOR_INTEL_386;
  81                         break;
  82                 case 4:
  83                         Si->dwProcessorType = PROCESSOR_INTEL_486;
  84                         break;
  85                 case 5:
  86                         Si->dwProcessorType = PROCESSOR_INTEL_PENTIUM;
  87                         break;
  88                 default:
  89                         /* FIXME: P2, P3, P4...? */
  90                         Si->dwProcessorType = PROCESSOR_INTEL_PENTIUM;
  91                 }
  92                 break;
  93
  94         case PROCESSOR_ARCHITECTURE_MIPS:
  95                 Si->dwProcessorType = PROCESSOR_MIPS_R4000;
  96                 break;
  97
  98         case PROCESSOR_ARCHITECTURE_ALPHA:
  99                 Si->dwProcessorType = PROCESSOR_ALPHA_21064;
 100                 break;
 101
 102         case PROCESSOR_ARCHITECTURE_PPC:
 103                 Si->dwProcessorType = -1; /* FIXME: what value? */
 104                 break;
 105
 106         }
 107         /* Once hardcoded to 64kb */
 108         Si->dwAllocationGranularity     = Sbi.AllocationGranularity;
 109         /* */
 110         Si->wProcessorLevel             = Spi.ProcessorLevel;
 111         Si->wProcessorRevision          = Spi.ProcessorRevision;
 112         /*
 113          * Get the version of Windows on which
 114          * the process expects to run.
 115          */
 116         ProcessVersion = GetProcessVersion (0); /* current process */
 117          /* In NT 3.1 and 3.5 these fields were always zero. */
 118         if (PV_NT351 > ProcessVersion)
 119         {
 120                 Si->wProcessorLevel = 0;
 121                 Si->wProcessorRevision = 0;
 122         }
 123 }
 124
 125
 126 /* EOF */