diff --git a/reactos/include/psdk/hlguids.h b/reactos/include/psdk/hlguids.h
index 7a45e668d86..9083a76a951 100644
--- a/reactos/include/psdk/hlguids.h
+++ b/reactos/include/psdk/hlguids.h
@@ -27,5 +27,9 @@ DEFINE_GUID(CLSID_StdHlinkBrowseContext,
     0x79eac9d1, 0xbaf9, 0x11ce, 0x8c, 0x82, 0x00, 0xaa,0x00,0x4b,0xa9,0x0b);
 DEFINE_GUID(CLSID_IID_IExtensionServices,
     0x79eac9cb, 0xbaf9, 0x11ce, 0x8c, 0x82, 0x00, 0xaa,0x00,0x4b,0xa9,0x0b);
+#ifndef __GNUC__
+DEFINE_GUID(IID_IBindStatusCallback,
+    0x79eac9c1, 0xbaf9, 0x11ce, 0x8c, 0x82, 0x00, 0xaa,0x00,0x4b,0xa9,0x0b);
+#endif
 
 #endif
diff --git a/reactos/include/psdk/shlguid.h b/reactos/include/psdk/shlguid.h
index 152da1952a4..a2f0a91022f 100644
--- a/reactos/include/psdk/shlguid.h
+++ b/reactos/include/psdk/shlguid.h
@@ -57,26 +57,27 @@ DEFINE_GUID(IID_IObjMgr,   0x00BB2761L,0x6A77,0x11D0,0xA5,0x35,0x00,0xC0,0x4F,0x
 DEFINE_GUID(IID_IProgressDialog, 0xEBBC7C04,0x315E,0x11D2,0xB6,0x2F,0x00,0x60,0x97,0xDF,0x5B,0xD4);
 
 
-/* avoid duplicate definitions with shobjidl.h (FIXME) */
-/* DEFINE_GUID(IID_IDockingWindow,     0x012dd920L, 0x7B26, 0x11D0, 0x8C, 0xA9, 0x00, 0xA0, 0xC9, 0x2D, 0xBF, 0xE8); */
-/* DEFINE_OLEGUID(IID_IShellPropSheetExt,  0x000214E9L, 0, 0); */
-/* DEFINE_OLEGUID(IID_IExtractIconA,       0x000214EBL, 0, 0); */
-/* DEFINE_OLEGUID(IID_IExtractIconW,       0x000214FAL, 0, 0); */
-/* DEFINE_OLEGUID(IID_IContextMenu,        0x000214E4L, 0, 0); */
-/* DEFINE_OLEGUID(IID_IContextMenu2,       0x000214F4L, 0, 0); */
-/* DEFINE_OLEGUID(IID_ICommDlgBrowser,     0x000214F1L, 0, 0); */
-/* DEFINE_OLEGUID(IID_IShellBrowser,       0x000214E2L, 0, 0); */
-/* DEFINE_OLEGUID(IID_IShellView,          0x000214E3L, 0, 0); */
-/* DEFINE_OLEGUID(IID_IShellFolder,        0x000214E6L, 0, 0); */
-/* DEFINE_OLEGUID(IID_IShellExtInit,       0x000214E8L, 0, 0); */
-/* DEFINE_OLEGUID(IID_IPersistFolder,      0x000214EAL, 0, 0); */
-/* DEFINE_OLEGUID(IID_IShellLinkA,         0x000214EEL, 0, 0); */
-/* DEFINE_OLEGUID(IID_IEnumIDList,         0x000214F2L, 0, 0); */
-/* DEFINE_OLEGUID(IID_IShellLinkW,         0x000214F9L, 0, 0); */
-/* DEFINE_OLEGUID(IID_IShellExecuteHookA,  0x000214F5L, 0, 0); */
-/* DEFINE_OLEGUID(IID_IShellExecuteHookW,  0x000214FBL, 0, 0); */
-/* DEFINE_OLEGUID(IID_INewShortcutHookA,   0x000214E1L, 0, 0); */
-/* DEFINE_OLEGUID(IID_INewShortcutHookW,   0x000214F7L, 0, 0); */
+#ifndef __GNUC__ /* avoid duplicate definitions with shobjidl.h (FIXME) */
+DEFINE_GUID(IID_IDockingWindow,     0x012dd920L, 0x7B26, 0x11D0, 0x8C, 0xA9, 0x00, 0xA0, 0xC9, 0x2D, 0xBF, 0xE8);
+DEFINE_OLEGUID(IID_IShellPropSheetExt,  0x000214E9L, 0, 0);
+DEFINE_OLEGUID(IID_IExtractIconA,       0x000214EBL, 0, 0);
+DEFINE_OLEGUID(IID_IExtractIconW,       0x000214FAL, 0, 0);
+DEFINE_OLEGUID(IID_IContextMenu,        0x000214E4L, 0, 0);
+DEFINE_OLEGUID(IID_IContextMenu2,       0x000214F4L, 0, 0);
+DEFINE_OLEGUID(IID_ICommDlgBrowser,     0x000214F1L, 0, 0);
+DEFINE_OLEGUID(IID_IShellBrowser,       0x000214E2L, 0, 0);
+DEFINE_OLEGUID(IID_IShellView,          0x000214E3L, 0, 0);
+DEFINE_OLEGUID(IID_IShellFolder,        0x000214E6L, 0, 0);
+DEFINE_OLEGUID(IID_IShellExtInit,       0x000214E8L, 0, 0);
+DEFINE_OLEGUID(IID_IPersistFolder,      0x000214EAL, 0, 0);
+DEFINE_OLEGUID(IID_IShellLinkA,         0x000214EEL, 0, 0);
+DEFINE_OLEGUID(IID_IEnumIDList,         0x000214F2L, 0, 0);
+DEFINE_OLEGUID(IID_IShellLinkW,         0x000214F9L, 0, 0);
+DEFINE_OLEGUID(IID_IShellExecuteHookA,  0x000214F5L, 0, 0);
+DEFINE_OLEGUID(IID_IShellExecuteHookW,  0x000214FBL, 0, 0);
+DEFINE_OLEGUID(IID_INewShortcutHookA,   0x000214E1L, 0, 0);
+DEFINE_OLEGUID(IID_INewShortcutHookW,   0x000214F7L, 0, 0);
+#endif
 
 DEFINE_GUID(CLSID_CUrlHistory, 0x3c374a40, 0xbae4, 0x11cf, 0xbf, 0x7d, 0x00, 0xaa, 0x00, 0x69, 0x46, 0xee);
 #define SID_SUrlHistory       CLSID_CUrlHistory
diff --git a/reactos/include/psdk/stireg.h b/reactos/include/psdk/stireg.h
index 2208a02aff9..c75079d30ab 100644
--- a/reactos/include/psdk/stireg.h
+++ b/reactos/include/psdk/stireg.h
@@ -36,4 +36,4 @@
 #define STI_DEVICE_VALUE_TIMEOUT_A                  "PollTimeout"
 #define STI_DEVICE_VALUE_DISABLE_NOTIFICATIONS_A    "DisableNotifications"
 #define REGSTR_VAL_BAUDRATE_A                       "BaudRate"
-#endif
\ No newline at end of file
+#endif
diff --git a/reactos/include/psdk/winbase.h b/reactos/include/psdk/winbase.h
index 6cdb089423c..9049f50d2a2 100644
--- a/reactos/include/psdk/winbase.h
+++ b/reactos/include/psdk/winbase.h
@@ -1852,8 +1852,8 @@ VOID WINAPI InitializeSRWLock(PSRWLOCK);
 LONG WINAPI InterlockedOr(IN OUT LONG volatile *,LONG);
 LONG WINAPI InterlockedAnd(IN OUT LONG volatile *,LONG);
 LONG WINAPI InterlockedCompareExchange(IN OUT LONG volatile *,LONG,LONG);
-LONG WINAPI InterlockedDecrement(IN OUT LONG volatile *);
-LONG WINAPI InterlockedExchange(IN OUT LONG volatile *,LONG);
+WINBASEAPI LONG WINAPI InterlockedDecrement(IN OUT LONG volatile *);
+WINBASEAPI LONG WINAPI InterlockedExchange(IN OUT LONG volatile *,LONG);
 #if defined(_WIN64)
  /* PVOID WINAPI InterlockedExchangePointer(PVOID*,PVOID); */
  #define InterlockedExchangePointer(t,v) \
@@ -1873,7 +1873,7 @@ LONG WINAPI InterlockedExchangeAdd(IN OUT LONG volatile *,LONG);
 #if (_WIN32_WINNT >= 0x0501)
 PSLIST_ENTRY WINAPI InterlockedFlushSList(PSLIST_HEADER);
 #endif
-LONG WINAPI InterlockedIncrement(IN OUT LONG volatile *);
+WINBASEAPI LONG WINAPI InterlockedIncrement(IN OUT LONG volatile *);
 #if (_WIN32_WINNT >= 0x0501)
 PSLIST_ENTRY WINAPI InterlockedPopEntrySList(PSLIST_HEADER);
 PSLIST_ENTRY WINAPI InterlockedPushEntrySList(PSLIST_HEADER,PSLIST_ENTRY);
@@ -2065,8 +2065,8 @@ HANDLE WINAPI OpenThread(DWORD,BOOL,DWORD);
 BOOL WINAPI OpenThreadToken(HANDLE,DWORD,BOOL,PHANDLE);
 HANDLE WINAPI OpenWaitableTimerA(DWORD,BOOL,LPCSTR);
 HANDLE WINAPI OpenWaitableTimerW(DWORD,BOOL,LPCWSTR);
-void WINAPI OutputDebugStringA(LPCSTR);
-void WINAPI OutputDebugStringW(LPCWSTR);
+WINBASEAPI void WINAPI OutputDebugStringA(LPCSTR);
+WINBASEAPI void WINAPI OutputDebugStringW(LPCWSTR);
 BOOL WINAPI PeekNamedPipe(HANDLE,PVOID,DWORD,PDWORD,PDWORD,PDWORD);
 BOOL WINAPI PostQueuedCompletionStatus(HANDLE,DWORD,ULONG_PTR,LPOVERLAPPED);
 DWORD WINAPI PrepareTape(HANDLE,DWORD,BOOL);
@@ -2245,7 +2245,7 @@ BOOL WINAPI SetVolumeMountPointW(LPCWSTR,LPCWSTR);
 BOOL WINAPI SetWaitableTimer(HANDLE,const LARGE_INTEGER*,LONG,PTIMERAPCROUTINE,PVOID,BOOL);
 DWORD WINAPI SignalObjectAndWait(HANDLE,HANDLE,DWORD,BOOL);
 DWORD WINAPI SizeofResource(HINSTANCE,HRSRC);
-void WINAPI Sleep(DWORD);
+WINBASEAPI void WINAPI Sleep(DWORD);
 #if (_WIN32_WINNT >= 0x0600)
 BOOL WINAPI SleepConditionVariableCS(PCONDITION_VARIABLE,PCRITICAL_SECTION,DWORD);
 BOOL WINAPI SleepConditionVariableSRW(PCONDITION_VARIABLE,PSRWLOCK,DWORD,ULONG);
diff --git a/reactos/include/psdk/winnt.h b/reactos/include/psdk/winnt.h
index 07b0f570d91..8dfdfbfabb4 100644
--- a/reactos/include/psdk/winnt.h
+++ b/reactos/include/psdk/winnt.h
@@ -1361,7 +1361,7 @@ typedef enum {
 #define SEC_RESERVE	0x04000000
 #define SEC_COMMIT	0x08000000
 #define SEC_NOCACHE	0x10000000
-#define SEC_WRITECOMBINE 0x40000000     
+#define SEC_WRITECOMBINE 0x40000000
 #define SEC_LARGE_PAGES  0x80000000
 #define SECTION_EXTEND_SIZE 16
 #define SECTION_MAP_READ 4
@@ -5097,18 +5097,12 @@ typedef struct _OBJECT_TYPE_LIST {
   GUID *ObjectType;
 } OBJECT_TYPE_LIST, *POBJECT_TYPE_LIST;
 
-#if defined(__GNUC__)
-
 #if defined(_M_IX86)
-static __inline__ PVOID GetCurrentFiber(void)
+FORCEINLINE PVOID GetCurrentFiber(VOID)
 {
-    void* ret;
-    __asm__ __volatile__ (
-        "movl	%%fs:0x10,%0"
-        : "=r" (ret) /* allow use of reg eax,ebx,ecx,edx,esi,edi */
-    );
-    return ret;
+    return (PVOID)(ULONG_PTR)__readfsdword(0x10);
 }
+
 #elif defined (_M_AMD64)
 FORCEINLINE PVOID GetCurrentFiber(VOID)
 {
@@ -5118,10 +5112,11 @@ FORCEINLINE PVOID GetCurrentFiber(VOID)
     return (PVOID)__readgsqword(FIELD_OFFSET(NT_TIB, FiberData));
   #endif
 }
+
 #elif defined (_M_ARM)
     PVOID WINAPI GetCurrentFiber(VOID);
-#else
-#if defined(_M_PPC)
+
+#elif defined(_M_PPC)
 static __inline__ __attribute__((always_inline)) unsigned long __readfsdword_winnt(const unsigned long Offset)
 {
     unsigned long result;
@@ -5133,42 +5128,15 @@ static __inline__ __attribute__((always_inline)) unsigned long __readfsdword_win
     return result;
 }
 
-#else
-#error Unknown architecture
-#endif
 static __inline__ PVOID GetCurrentFiber(void)
 {
     return __readfsdword_winnt(0x10);
 }
+#else
+#error Unknown architecture
 #endif
 
-#elif defined(__WATCOMC__)
 
-extern PVOID GetCurrentFiber(void);
-#pragma aux GetCurrentFiber = \
-        "mov	eax, dword ptr fs:0x10" \
-        value [eax] \
-        modify [eax];
-
-#elif defined(_MSC_VER)
-
-#if (_MSC_FULL_VER >= 13012035)
-
-__inline PVOID GetCurrentFiber(void) { return (PVOID)(ULONG_PTR)__readfsdword(0x10); }
-
-#else
-
-static __inline PVOID GetCurrentFiber(void)
-{
-    PVOID p;
-	__asm mov eax, fs:[10h]
-	__asm mov [p], eax
-    return p;
-}
-
-#endif /* _MSC_FULL_VER */
-
-#endif /* __GNUC__/__WATCOMC__/_MSC_VER */
 
 #include "inline_ntcurrentteb.h"
 
@@ -5215,11 +5183,11 @@ InterlockedBitTestAndReset(IN LONG volatile *Base,
 #endif
 }
 
+#endif
+
 #define BitScanForward _BitScanForward
 #define BitScanReverse _BitScanReverse
 
-#endif
-
 /* TODO: Other architectures than X86 */
 #if defined(_M_IX86)
 #define PF_TEMPORAL_LEVEL_1
diff --git a/reactos/include/psdk/wsipv6ok.h b/reactos/include/psdk/wsipv6ok.h
index b9950254e66..96f40395236 100644
--- a/reactos/include/psdk/wsipv6ok.h
+++ b/reactos/include/psdk/wsipv6ok.h
@@ -80,4 +80,4 @@
 #undef WSAAsyncGetHostByName
 #define WSAAsyncGetHostByName(a,b,c,d,e) WSAAsyncGetHostByName_IPV6INCOMPATIBLE
 
-#endif
\ No newline at end of file
+#endif