gcc:

	gcc:
	PR ada/41929
	* config/sparc/sol2-unwind.h: Include <sys/frame.h>, <sys/stack.h>
	(IS_SIGHANDLER): Define.
	(sparc64_is_sighandler): New function, split off from
	sparc64_fallback_frame_state.
	(sparc_is_sighandler): New function, split off from
	sparc_fallback_frame_state.
	(sparc64_fallback_frame_state): Merge with ...
	(sparc_fallback_frame_state): ... this into ...
	(MD_FALLBACK_FRAME_STATE_FOR): ... this.
	Change new_cfa to long.
	Remove regs_off, fpu_save_off, fpu_save.
	Define nframes, mctx.
	Use IS_SIGHANDLER, handler_args, mctx, walk stack instead of
	hardcoded offsets.

	gcc/testsuite:
	PR ada/41929
	* gnat.dg/null_pointer_deref1.exp: Don't skip on
	sparc*-sun-solaris2.11.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@170126 138bc75d-0d04-0410-961f-82ee72b054a4