ntdll: Implement RtlIsProcessorFeaturePresent().

dlls/kernel32/cpu.c

@@ -46,8 +46,6 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(reg);
 
-#define SHARED_DATA     ((KSHARED_USER_DATA*)0x7ffe0000)
-
 /****************************************************************************
  *		QueryPerformanceCounter (KERNEL32.@)
  *
@@ -200,18 +198,10 @@ VOID WINAPI GetNativeSystemInfo(
  * 			IsProcessorFeaturePresent	[KERNEL32.@]
  *
  * Determine if the cpu supports a given feature.
- * 
- * RETURNS
- *  TRUE, If the processor supports feature,
- *  FALSE otherwise.
  */
-BOOL WINAPI IsProcessorFeaturePresent (
-	DWORD feature	/* [in] Feature number, (PF_ constants from "winnt.h") */) 
+BOOL WINAPI IsProcessorFeaturePresent ( DWORD feature )
 {
-  if (feature < PROCESSOR_FEATURE_MAX)
-    return SHARED_DATA->ProcessorFeatures[feature];
-  else
-    return FALSE;
+    return RtlIsProcessorFeaturePresent( feature );
 }
 
 /***********************************************************************

dlls/ntdll/nt.c

@@ -2230,6 +2230,14 @@ static NTSTATUS get_firmware_info(SYSTEM_FIRMWARE_TABLE_INFORMATION *sfti, ULONG
 
 #endif
 
+/***********************************************************************
+ * RtlIsProcessorFeaturePresent [NTDLL.@]
+ */
+BOOLEAN WINAPI RtlIsProcessorFeaturePresent( UINT feature )
+{
+    return feature < PROCESSOR_FEATURE_MAX && user_shared_data->ProcessorFeatures[feature];
+}
+
 /******************************************************************************
  * NtQuerySystemInformation [NTDLL.@]
  * ZwQuerySystemInformation [NTDLL.@]

dlls/ntdll/ntdll.spec

@@ -756,6 +756,7 @@
 @ stub RtlIsGenericTableEmpty
 # @ stub RtlIsGenericTableEmptyAvl
 @ stdcall RtlIsNameLegalDOS8Dot3(ptr ptr ptr)
+@ stdcall RtlIsProcessorFeaturePresent(long)
 # @ stub RtlIsRangeAvailable
 @ stdcall RtlIsTextUnicode(ptr long ptr)
 # @ stub RtlIsThreadWithinLoaderCallout

include/winternl.h

@@ -2741,6 +2741,7 @@ NTSYSAPI BOOL      WINAPI RtlIsCriticalSectionLocked(RTL_CRITICAL_SECTION *);
 NTSYSAPI BOOL      WINAPI RtlIsCriticalSectionLockedByThread(RTL_CRITICAL_SECTION *);
 NTSYSAPI ULONG     WINAPI RtlIsDosDeviceName_U(PCWSTR);
 NTSYSAPI BOOLEAN   WINAPI RtlIsNameLegalDOS8Dot3(const UNICODE_STRING*,POEM_STRING,PBOOLEAN);
+NTSYSAPI BOOLEAN   WINAPI RtlIsProcessorFeaturePresent(UINT);
 NTSYSAPI BOOLEAN   WINAPI RtlIsTextUnicode(LPCVOID,INT,INT *);
 NTSYSAPI BOOLEAN   WINAPI RtlIsValidHandle(const RTL_HANDLE_TABLE *, const RTL_HANDLE *);
 NTSYSAPI BOOLEAN   WINAPI RtlIsValidIndexHandle(const RTL_HANDLE_TABLE *, ULONG Index, RTL_HANDLE **);