[hyperion] 38476: modified include/reactos/libs/pseh/pseh2.h Did you know gcc doesn't let PSEH deter it from inlining a function? Allocate the frame with __builtin_alloca so that this doesn't cause issues

Author: hyperion
Date: Tue Dec 30 14:02:03 2008
New Revision: 38476

URL: http://svn.reactos.org/svn/reactos?rev=38476&view=rev
Log:
modified   include/reactos/libs/pseh/pseh2.h
   Did you know gcc doesn't let PSEH deter it from inlining a function? Allocate the frame with __builtin_alloca so that this doesn't cause issues

Modified:
    trunk/reactos/include/reactos/libs/pseh/pseh2.h

Modified: trunk/reactos/include/reactos/libs/pseh/pseh2.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/include/reactos/libs/pseh/p...
==============================================================================
--- trunk/reactos/include/reactos/libs/pseh/pseh2.h [iso-8859-1] (original)
+++ trunk/reactos/include/reactos/libs/pseh/pseh2.h [iso-8859-1] Tue Dec 30 14:02:03 2008
@@ -135,9 +135,6 @@
 #define ___SEH_STRINGIFY(X_) # X_
 #define __SEH_STRINGIFY(X_) ___SEH_STRINGIFY(X_)

-#define __SEH_FORCE_NEST \
-	__asm__ __volatile__("#%0" : : "r" (&_SEHFrame))
-
 #define __SEH_EXCEPT_RET long
 #define __SEH_EXCEPT_ARGS __attribute__((unused)) _SEH2Frame_t * _SEH2FrameP, __attribute__((unused)) struct _EXCEPTION_POINTERS * _SEHExceptionInformation
 #define __SEH_EXCEPT_ARGS_ , __SEH_EXCEPT_ARGS
@@ -202,14 +199,16 @@
    		__label__ _SEHDoTry; \
    		__label__ _SEHAfterTry; \
    		static const int _SEH2ScopeKind = 0; \
-			_SEH2Frame_t _SEHFrame; \
    		volatile _SEH2TryLevel_t _SEHTryLevel; \
-			_SEH2Frame_t * const _SEH2FrameP = _SEHTopTryLevel ? &_SEHFrame : _SEHCurFrameP; \
+			void * _SEHStackPointer; \
    		volatile _SEH2TryLevel_t * const _SEH2TryLevelP = &_SEHTryLevel; \
+			_SEH2Frame_t * const _SEH2FrameP = _SEHTopTryLevel ? \
+				({ __asm__ __volatile__("mov %%esp, %0" : "=g" (_SEHStackPointer)); __builtin_alloca(sizeof(_SEH2Frame_t)); }) : \
+				_SEHCurFrameP; \
  \
    		(void)_SEH2ScopeKind; \
-			(void)_SEHFrame; \
    		(void)_SEHTryLevel; \
+			(void)_SEHStackPointer; \
    		(void)_SEH2FrameP; \
    		(void)_SEH2TryLevelP; \
  \
@@ -220,7 +219,7 @@
    		__SEH_ENTER_TRYLEVEL(); \
  \
    		if(_SEHTopTryLevel) \
-				_SEH2EnterFrame(&_SEHFrame); \
+				_SEH2EnterFrame(_SEH2FrameP); \

#define __SEH_END_SCOPE \
    	} \
@@ -346,7 +345,10 @@
  \
    	_SEHAfterTry:; \
    	if(_SEHTopTryLevel) \
+		{ \
    		_SEH2LeaveFrame(); \
+			__asm__ __volatile__("mov %0, %%esp" : : "g" (_SEHStackPointer)); \
+		} \
    	else \
    	{ \
    		__SEH_LEAVE_TRYLEVEL(); \