[multiple changes]

[multiple changes]

Fri Oct 31 01:45:31 1997  Jason Merrill  <jason@yorick.cygnus.com>

	* libgcc2.c (L_eh): Define __eh_pc.
	Replace __eh_type with generic pointer __eh_info.

Fri Oct 31 01:47:57 1997  Jason Merrill  <jason@yorick.cygnus.com>

	Support for nested exceptions.
	* tinfo2.cc (__is_pointer): New fn.
	* exception.cc (struct cp_eh_info): Define.
	(__cp_exception_info, __uncatch_exception): New fns.
	(__cp_push_exception, __cp_pop_exception): New fns.
	* except.c: Lose saved_throw_{type,value,cleanup,in_catch}.
 	Lose empty_fndecl.
	(init_exception_processing): Likewise.  __eh_pc is now external.
	(push_eh_info): New fn.
	(get_eh_{info,value,type,caught}): New fns.
	(push_eh_cleanup): Just call __cp_pop_exception.
	(expand_start_catch_block): Use push_eh_info.  Start the eh region
	sooner.
	(expand_end_eh_spec): Use push_eh_info.
	(expand_throw): Call __cp_push_exception to set up the exception info.
	Just pass the destructor or 0 as the cleanup.  Call __uncatch_exception
	when we rethrow.
	(expand_builtin_throw): Don't refer to empty_fndecl.

From-SVN: r16248