The directory containing this files contains ARM's example

implementation of the EHABI which is part of 'The Base Standard ABI

for the ARM architecture'. All parts of this specification including

the code contained here can be obtained via the link

[http://www.armdevzone.com/EABI/HomePage.html]. Symbian's

implementation of exception handling is derived from this code. This

file will document the amendments made to each file to integrate the

code with SymbianOS.

Implementation Notes.

* The Symbian implementation does not support nested exceptions. This

  is not required by C++ and there is no extant requirement to support

  language which does require nested exceptions.  However this means

  that the Symbian implementation is not fully BSABI compliant. 

EH v1.0 changes

UNWINDER.C

/*

 * RCS $Revision: 1.16 $

 * Checkin $Date: 2003/10/23 13:57:39 $

 * Revising $Author: agrant $

 */

* Remove the source region unwinder_c and replace unwind_activity_c with _DEBUG.

* Replace inclusion of stddef.h with e32def.h

* Add typedef for size_t (as a consequence of replacement of stddef.h).

* Add declaration for abort().

* Add declaration for bsearch().

* Replace use and declaration of printf() with DebugPrintf().

* Conditionalize nested exception handling with SUPPORT_NEST_EXCEPTIONS and abort if found.

* Remove __ARM_ETInfo from __UnwindRaiseException.