[hyperion] 38295: modified include/reactos/libs/pseh/pseh2.h modified lib/pseh/framebased-gcchack.c modified lib/pseh/i386/framebased-gcchack.S (Re)added arguments to _SEH2_EXCEPT nested routines, so that using _SEH2_GetExceptionCode and _SEH2_GetExceptionInformation in exception filters doesn't force the creation of function trampolines (and related horrid inline code) Reimplemented some internal library routines in C
23 Dec
2008
23 Dec
'08
2:45 a.m.
Author: hyperion
Date: Mon Dec 22 20:45:25 2008
New Revision: 38295
URL: http://svn.reactos.org/svn/reactos?rev=38295&view=rev
Log:
modified include/reactos/libs/pseh/pseh2.h
modified lib/pseh/framebased-gcchack.c
modified lib/pseh/i386/framebased-gcchack.S
(Re)added arguments to _SEH2_EXCEPT nested routines, so that using
_SEH2_GetExceptionCode and _SEH2_GetExceptionInformation in exception filters doesn't
force the creation of function trampolines (and related horrid inline code)
Reimplemented some internal library routines in C
Modified:
trunk/reactos/include/reactos/libs/pseh/pseh2.h
trunk/reactos/lib/pseh/framebased-gcchack.c
trunk/reactos/lib/pseh/i386/framebased-gcchack.S
Modified: trunk/reactos/include/reactos/libs/pseh/pseh2.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/include/reactos/libs/pseh/…
==============================================================================
--- trunk/reactos/include/reactos/libs/pseh/pseh2.h [iso-8859-1] (original)
+++ trunk/reactos/include/reactos/libs/pseh/pseh2.h [iso-8859-1] Mon Dec 22 20:45:25 2008
@@ -46,7 +46,6 @@
{
_SEH2Registration_t SF_Registration;
volatile struct __SEH2TryLevel * volatile SF_TopTryLevel;
- struct _EXCEPTION_POINTERS * volatile SF_ExceptionInformation;
volatile unsigned long SF_Code;
}
_SEH2Frame_t;
@@ -140,15 +139,23 @@
#define __SEH_FORCE_NEST \
__asm__ __volatile__("#%0" : : "r" (&_SEHFrame))
-#define __SEH_DECLARE_EXCEPT_PFN(NAME_) int (__cdecl * NAME_)(void)
-#define __SEH_DECLARE_EXCEPT(NAME_) int __cdecl NAME_(void)
-#define __SEH_DEFINE_EXCEPT(NAME_) int __cdecl NAME_(void)
-
-#define __SEH_DECLARE_FINALLY_PFN(NAME_) void (__cdecl * NAME_)(void)
-#define __SEH_DECLARE_FINALLY(NAME_) void __cdecl NAME_(void)
-#define __SEH_DEFINE_FINALLY(NAME_) void __cdecl NAME_(void)
-
-#define __SEH_RETURN_EXCEPT(R_) return (int)(R_)
+#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
+#define __SEH_EXCEPT_PFN __SEH_DECLARE_EXCEPT_PFN
+#define __SEH_DECLARE_EXCEPT_PFN(NAME_) __SEH_EXCEPT_RET (__cdecl *
NAME_)(__SEH_EXCEPT_ARGS)
+#define __SEH_DECLARE_EXCEPT(NAME_) __SEH_EXCEPT_RET __cdecl NAME_(__SEH_EXCEPT_ARGS)
+#define __SEH_DEFINE_EXCEPT(NAME_) __SEH_EXCEPT_RET __cdecl NAME_(__SEH_EXCEPT_ARGS)
+
+#define __SEH_FINALLY_RET void
+#define __SEH_FINALLY_ARGS void
+#define __SEH_FINALLY_ARGS_
+#define __SEH_FINALLY_PFN __SEH_DECLARE_FINALLY_PFN
+#define __SEH_DECLARE_FINALLY_PFN(NAME_) __SEH_FINALLY_RET (__cdecl *
NAME_)(__SEH_FINALLY_ARGS)
+#define __SEH_DECLARE_FINALLY(NAME_) __SEH_FINALLY_RET __cdecl NAME_(__SEH_FINALLY_ARGS)
+#define __SEH_DEFINE_FINALLY(NAME_) __SEH_FINALLY_RET __cdecl NAME_(__SEH_FINALLY_ARGS)
+
+#define __SEH_RETURN_EXCEPT(R_) return (long)(R_)
#define __SEH_RETURN_FINALLY() return
#define __SEH_BEGIN_TRY \
@@ -175,9 +182,9 @@
#define __SEH_LEAVE_TRYLEVEL() __SEH_SET_TRYLEVEL(_SEHPrevTryLevelP)
#define __SEH_END_SCOPE_CHAIN \
- static const int _SEH2ScopeKind = 1; \
- static _SEH2Frame_t * const _SEH2FrameP = 0; \
- static _SEH2TryLevel_t * const _SEH2TryLevelP = 0;
+ static __attribute__((unused)) const int _SEH2ScopeKind = 1; \
+ static __attribute__((unused)) _SEH2Frame_t * const _SEH2FrameP = 0; \
+ static __attribute__((unused)) _SEH2TryLevel_t * const _SEH2TryLevelP = 0;
#define __SEH_BEGIN_SCOPE \
for(;;) \
@@ -287,35 +294,39 @@
\
_SEHBeforeTry:; \
\
- if(__builtin_constant_p((__VA_ARGS__))) \
- { \
- if((__VA_ARGS__) > 0) \
+ { \
+ __attribute__((unused)) struct _EXCEPTION_POINTERS * volatile
_SEHExceptionInformation; \
+ \
+ if(__builtin_constant_p((__VA_ARGS__))) \
{ \
- _SEHTryLevel.ST_Filter = (void *)1; \
+ if((__VA_ARGS__) > 0) \
+ { \
+ _SEHTryLevel.ST_Filter = (void *)1; \
+ _SEHTryLevel.ST_Body = &&_SEHBeginExcept; \
+ __SEH_USE_LABEL(_SEHBeginExcept); \
+ } \
+ else if((__VA_ARGS__) < 0) \
+ { \
+ _SEHTryLevel.ST_Filter = (void *)-1; \
+ _SEHTryLevel.ST_Body = NULL; \
+ } \
+ else \
+ { \
+ _SEHTryLevel.ST_Filter = (void *)0; \
+ _SEHTryLevel.ST_Body = NULL; \
+ } \
+ } \
+ else \
+ { \
+ __SEH_DEFINE_EXCEPT(_SEHExcept) \
+ { \
+ __SEH_RETURN_EXCEPT((__VA_ARGS__)); \
+ } \
+ \
+ _SEHTryLevel.ST_Filter = &_SEHExcept; \
_SEHTryLevel.ST_Body = &&_SEHBeginExcept; \
__SEH_USE_LABEL(_SEHBeginExcept); \
} \
- else if((__VA_ARGS__) < 0) \
- { \
- _SEHTryLevel.ST_Filter = (void *)-1; \
- _SEHTryLevel.ST_Body = NULL; \
- } \
- else \
- { \
- _SEHTryLevel.ST_Filter = (void *)0; \
- _SEHTryLevel.ST_Body = NULL; \
- } \
- } \
- else \
- { \
- __SEH_DEFINE_EXCEPT(_SEHExcept) \
- { \
- __SEH_RETURN_EXCEPT((__VA_ARGS__)); \
- } \
- \
- _SEHTryLevel.ST_Filter = &_SEHExcept; \
- _SEHTryLevel.ST_Body = &&_SEHBeginExcept; \
- __SEH_USE_LABEL(_SEHBeginExcept); \
} \
\
__SEH_BARRIER; \
@@ -347,8 +358,6 @@
_SEHBeginExcept:; \
{ \
{ \
- _SEH2Frame_t * const _SEH2FrameP = _SEHTopTryLevel ? &_SEHFrame : _SEHCurFrameP;
\
- (void)_SEH2FrameP; \
__SEH_BARRIER;
#define _SEH2_END \
@@ -360,7 +369,7 @@
} \
__SEH_END_SCOPE;
-#define _SEH2_GetExceptionInformation() ((_SEH2FrameP)->SF_ExceptionInformation)
+#define _SEH2_GetExceptionInformation() (_SEHExceptionInformation)
#define _SEH2_GetExceptionCode() ((_SEH2FrameP)->SF_Code)
#define _SEH2_AbnormalTermination() (_SEHAbnormalTermination)
Modified: trunk/reactos/lib/pseh/framebased-gcchack.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/lib/pseh/framebased-gcchac…
==============================================================================
--- trunk/reactos/lib/pseh/framebased-gcchack.c [iso-8859-1] (original)
+++ trunk/reactos/lib/pseh/framebased-gcchack.c [iso-8859-1] Mon Dec 22 20:45:25 2008
@@ -20,14 +20,15 @@
DEALINGS IN THE SOFTWARE.
*/
-#define _NTSYSTEM_
+#define _NTSYSTEM_ /* removes dllimport attribute from RtlUnwind */
+
#define STRICT
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <pseh/pseh2.h>
-
#include <excpt.h>
+#include <intrin.h>
#ifndef EXCEPTION_EXIT_UNWIND
#define EXCEPTION_EXIT_UNWIND 4
@@ -37,17 +38,28 @@
#define EXCEPTION_UNWINDING 2
#endif
-extern _SEH2Registration_t * __cdecl _SEH2CurrentRegistration(void);
-
-extern int __SEH2Except(void *, void *);
-extern void __SEH2Finally(void *, void *);
extern DECLSPEC_NORETURN int __SEH2Handle(void *, void *, void *);
-
-extern void __cdecl __SEH2EnterFrame(_SEH2Registration_t *);
-extern void __cdecl __SEH2LeaveFrame(void);
-
extern int __cdecl __SEH2FrameHandler(struct _EXCEPTION_RECORD *, void *, struct _CONTEXT
*, void *);
extern int __cdecl __SEH2NestedHandler(struct _EXCEPTION_RECORD *, void *, struct
_CONTEXT *, void *);
+
+FORCEINLINE
+_SEH2Registration_t * __cdecl _SEH2CurrentRegistration(void)
+{
+ return (_SEH2Registration_t *)__readfsdword(0);
+}
+
+FORCEINLINE
+void __cdecl __SEH2EnterFrame(_SEH2Registration_t * frame)
+{
+ frame->SER_Prev = _SEH2CurrentRegistration();
+ __writefsdword(0, (unsigned long)frame);
+}
+
+FORCEINLINE
+void __cdecl __SEH2LeaveFrame(void)
+{
+ __writefsdword(0, (unsigned long)_SEH2CurrentRegistration()->SER_Prev);
+}
FORCEINLINE
void _SEH2GlobalUnwind(void * target)
@@ -67,11 +79,12 @@
);
}
-FORCEINLINE
-int _SEH2Except(_SEH2Frame_t * frame, volatile _SEH2TryLevel_t * trylevel)
+static
+__SEH_EXCEPT_RET _SEH2Except(_SEH2Frame_t * frame, volatile _SEH2TryLevel_t * trylevel,
struct _EXCEPTION_POINTERS * ep)
{
void * filter = trylevel->ST_Filter;
void * context = NULL;
+ __SEH_EXCEPT_RET ret;
if(filter == (void *)0)
return 0;
@@ -88,10 +101,22 @@
filter = _SEHFunctionFromTrampoline((_SEHTrampoline_t *)filter);
}
- return __SEH2Except(filter, context);
-}
-
-FORCEINLINE
+ __asm__ __volatile__
+ (
+ "push %[ep]\n"
+ "push %[frame]\n"
+ "call *%[filter]\n"
+ "pop %%edx\n"
+ "pop %%edx\n" :
+ [ret] "=a" (ret) :
+ "c" (context), [filter] "r" (filter), [frame] "g"
(frame), [ep] "g" (ep) :
+ "edx", "flags", "memory"
+ );
+
+ return ret;
+}
+
+static
void _SEH2Finally(_SEH2Frame_t * frame, volatile _SEH2TryLevel_t * trylevel)
{
if(trylevel->ST_Filter == NULL && trylevel->ST_Body != NULL)
@@ -105,7 +130,7 @@
body = _SEHFunctionFromTrampoline((_SEHTrampoline_t *)body);
}
- __SEH2Finally(body, context);
+ __asm__ __volatile__("call *%1\n" : : "c" (context), "r"
(body) : "eax", "edx", "flags", "memory");
}
}
@@ -179,11 +204,10 @@
ep.ContextRecord = ContextRecord;
frame->SF_Code = ExceptionRecord->ExceptionCode;
- frame->SF_ExceptionInformation = &ep;
for(trylevel = frame->SF_TopTryLevel; trylevel != NULL; trylevel =
trylevel->ST_Next)
{
- ret = _SEH2Except(frame, trylevel);
+ ret = _SEH2Except(frame, trylevel, &ep);
if(ret < 0)
return ExceptionContinueExecution;
Modified: trunk/reactos/lib/pseh/i386/framebased-gcchack.S
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/lib/pseh/i386/framebased-g…
==============================================================================
--- trunk/reactos/lib/pseh/i386/framebased-gcchack.S [iso-8859-1] (original)
+++ trunk/reactos/lib/pseh/i386/framebased-gcchack.S [iso-8859-1] Mon Dec 22 20:45:25
2008
@@ -21,32 +21,6 @@
.text
.intel_syntax noprefix
-.func _SEH2CurrentRegistration
-.globl __SEH2CurrentRegistration
-__SEH2CurrentRegistration:
- mov eax, [fs:0]
- ret
-.endfunc
-
-.func __SEH2EnterFrame
-.globl ___SEH2EnterFrame
-___SEH2EnterFrame:
- mov eax, [esp+4]
- mov ecx, [fs:0]
- mov [eax], ecx
- mov [fs:0], eax
- ret
-.endfunc
-
-.func __SEH2LeaveFrame
-.globl ___SEH2LeaveFrame
-___SEH2LeaveFrame:
- mov eax, [fs:0]
- mov eax, [eax]
- mov [fs:0], eax
- ret
-.endfunc
-
.func __SEH2Handle
.globl ___SEH2Handle
___SEH2Handle:
@@ -54,28 +28,6 @@
mov ebp, [esp+8]
mov esp, [esp+12]
jmp eax
-.endfunc
-
-.func __SEH2Except
-.globl ___SEH2Except
-___SEH2Except:
- mov eax, [esp+4]
- mov ecx, [esp+8]
-
- call eax
-
- ret
-.endfunc
-
-.func __SEH2Finally
-.globl ___SEH2Finally
-___SEH2Finally:
- mov eax, [esp+4]
- mov ecx, [esp+8]
-
- call eax
-
- ret
.endfunc
.func __SEH2FrameHandler
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