* config/sh/sh.c (SH_ATTRIBUTES): Define.
	(SYMBOL_FLAG_FUNCVEC_FUNCTION): Define.
	(print_operand): Handle resbank in %@ operand code.
	(sh_encode_section_info): New.
	(push_regs): Add conditions for resbank.
	(sh_expand_epilogue): Likewise.
	(sh_insert_attributes): Likewise.
	(sh_attribute_table): Likewise.
	(sh_handle_resbank_handler_attribute): New.
	(sh2a_handle_function_vector_handler_attribute): New.
	(sh2a_is_function_vector_call): New.
	(sh2a_get_function_vector_number): New.
	(sh2a_function_vector_p): New.
	(sh_cfun_resbank_handler_p): New.
	* config/sh/sh.md (calli): Emit jsr/n if possible.
	(calli_tbr_rel): New.
	(calli_pcrel): Emit jsr/n if possible.
	(return_i): Emit rts/n if possible.
	(call_valuei_tbr_rel): New.
	(call_valuei_pcrel): Add condition for SH2A target.
	(call_value): Likewise.
	* config/sh/sh-protos.h (sh_cfun_resbank_handler_p): Declare.
	(sh2a_get_function_vector_number): Likewise.
	(sh2a_is_function_vector_call): Likewise.
	* doc/extend.texi: Document TBR relative addressing of SH2A.
	(resbank): Add description for SH2A.

	* gcc.target/sh/sh2a-resbank.c: New test.
	* gcc.target/sh/sh2a-tbr-jump.c: New test.
	* gcc.target/sh/sh2a-jsrn.c: New test.
	* gcc.target/sh/sh2a-rtsn.c: New test.


Co-Authored-By: Jayant R Sonar <jayant.sonar@kpitcummins.com>
Co-Authored-By: Naveen.H.S <naveen.hs@kpitcummins.com>

From-SVN: r133513