m68k.opt (mxgot): New option.

2008-06-04  Joseph Myers  <joseph@codesourcery.com>
            Maxim Kuvyrkov  <maxim@codesourcery.com>

	* config/m68k/m68k.opt (mxgot): New option.
	* config/m68k/m68k.c (legitimize_pic_address): Handle -mxgot.
	(m68k_output_addr_const_extra): New.
	* config/m68k/m68k.h (OUTPUT_ADDR_CONST_EXTRA): New.
	* config/m68k/m68k-protos.h (m68k_output_addr_const_extra): Declare.
	* config/m68k/m68k.md (UNSPEC_GOTOFF): Define.
	* doc/invoke.texi (M680x0 Options): Document -mxgot.

testsuite:
2008-06-04  Joseph Myers  <joseph@codesourcery.com>
            Maxim Kuvyrkov  <maxim@codesourcery.com>

	* gcc.target/m68k/xgot-1.c: New test.

Co-Authored-By: Maxim Kuvyrkov <maxim@codesourcery.com>

From-SVN: r136355