First Checkin. Woohoo!

git-svn-id: http://cexception.svn.sourceforge.net/svnroot/cexception/trunk@1 50f63946-2846-0410-8d77-f904c773002e

lib/Exception.c

@@ -0,0 +1,38 @@
+#include "Exception.h"
+
+volatile EXCEPTION_FRAME_T ExceptionFrames[EXCEPTION_NUM_ID];
+
+//------------------------------------------------------------------------------------------
+//  ThrowDetailed
+//------------------------------------------------------------------------------------------
+//
+//  PARAMETERS:         None
+//
+//  DESCRIPTION:        throws a software exception with details
+//
+//  RETURNS:            None
+//
+//------------------------------------------------------------------------------------------
+void ThrowDetailed(unsigned int ExceptionID, unsigned int Details)
+{
+    MY_FRAME.Exception = ExceptionID;
+    MY_FRAME.Details   = Details;
+    longjmp(*MY_FRAME.pFrame, 1);
+}
+
+//------------------------------------------------------------------------------------------
+//  Rethrow
+//------------------------------------------------------------------------------------------
+//
+//  PARAMETERS:         None
+//
+//  DESCRIPTION:        rethrows a software exception that has already been thrown
+//
+//  RETURNS:            None
+//
+//------------------------------------------------------------------------------------------
+void Rethrow()
+{
+    longjmp(*MY_FRAME.pFrame, 1);
+}
+

lib/Exception.h

@@ -0,0 +1,43 @@
+#ifndef _EXCEPTION_H
+#define _EXCEPTION_H
+
+#include <setjmp.h>
+#include "ExceptionConfig.h"
+
+//exception frame structures
+typedef struct {
+  jmp_buf* pFrame;
+  volatile unsigned int Exception;
+  volatile unsigned int Details;
+} EXCEPTION_FRAME_T;
+extern volatile EXCEPTION_FRAME_T ExceptionFrames[];
+
+#define MY_FRAME            (ExceptionFrames[EXCEPTION_GET_ID()])
+#define MY_FRAME_FAST       (ExceptionFrames[MY_ID])
+#define EXCEPTION_ID        (MY_FRAME.Exception)
+#define EXCEPTION_DETAILS   (MY_FRAME.Details)
+
+#define Try                                                         \
+    {                                                               \
+        jmp_buf *PrevFrame, NewFrame;                               \
+        PrevFrame = MY_FRAME.pFrame;                                \
+        unsigned int MY_ID = EXCEPTION_GET_ID();                    \
+        MY_FRAME_FAST.pFrame = &NewFrame;                           \
+        MY_FRAME_FAST.Details = 0;                                  \
+        MY_FRAME_FAST.Exception = EXCEPTION_NONE;                   \
+        if (setjmp(NewFrame) == 0) {                                \
+            if (&PrevFrame)
+
+#define Catch                                                       \
+            else { }                                                \
+            MY_FRAME_FAST.Exception = EXCEPTION_NONE;               \
+        }                                                           \
+        MY_FRAME_FAST.pFrame = PrevFrame;                           \
+    }                                                               \
+    if (MY_FRAME.Exception != EXCEPTION_NONE)
+
+#define Throw(id)       ThrowDetailed(id, __LINE__)
+void ThrowDetailed(unsigned int ExceptionID, unsigned int Details);
+void Rethrow(void);
+
+#endif // _EXCEPTION_H

lib/ExceptionConfig.h

@@ -0,0 +1,26 @@
+#ifndef _EXCEPTION_CONFIG_H
+#define _EXCEPTION_CONFIG_H
+
+//#define EXCEPTION_MULTI_STACK
+#define EXCEPTION_NONE              (0x5A5A5A5A)
+
+//if using multistack support and not currently running a test, must include multistack support
+#undef EXCEPTION_INCLUDE_MULTI_STACK_SUPPORT
+#ifndef TEST
+  #ifdef EXCEPTION_MULTI_STACK
+    #define EXCEPTION_INCLUDE_MULTI_STACK_SUPPORT
+  #endif
+#endif
+
+//define the method of automatically looking up the current frame index (mappable from task ID if the task ID's are consecutive)
+//    The example below supports the Quadros OS in Multi-Stack Mode.  Most RTOS will support a similar function call.
+#ifdef EXCEPTION_INCLUDE_MULTI_STACK_SUPPORT
+  #include "OSAPI.h"
+  #define EXCEPTION_GET_ID()  (KS_GetTaskID())
+  #define EXCEPTION_NUM_ID    (NTASKS + 1)
+#else
+  #define EXCEPTION_GET_ID()  (0) //use the first index always because there is only one anyway
+  #define EXCEPTION_NUM_ID    (1) //there is only the one stack
+#endif
+
+#endif //_EXCEPTION_CONFIG_H