[PATCH]: Generate relax relocations in gas HC11/HC12

[Stephane Carrez]

Hi!

This patch adds the necessary support to generate the relocs for linker
relaxation (HC11/HC12).  A RL_JUMP reloc is put at beginning of each branch
instruction.  The assembler must not resolve relocs itself and transform them
to be based on sections.  The linker will need the real symbol to know if relaxation
of the instruction can be done.

Committed on mainline.

	Stephane

2002-08-13  Stephane Carrez  <stcarrez@nerim.fr>

	* config/tc-m68hc11.h (MD_PCREL_FROM_SECTION): Remove.
	(TC_HANDLES_FX_DONE): Define to let md_apply_fix3 set fx_done flag
	according to the reloc.
	(tc_fix_adjustable, tc_m68hc11_fix_adjustable): Define.
	(TC_FORCE_RELOCATION): Define.
	(tc_m68hc11_force_relocation): Declare.

	* config/tc-m68hc11.c (md_pseudo_table): Add relax command.
	(s_m68hc11_relax): New function for relax group.
	(build_insn, build_jump_insn): Emit a M68HC11_RL_JUMP reloc at
	beginning of jump instruction.
	(md_pcrel_from): Rename from md_pcrel_from_section and fix
	address computation.
	(tc-gen_reloc): Update.
	(md_estimate_size_before_relax): Create the BFD_RELOC_16_PCREL as
	PC-relative fixup.
	(tc_m68hc11_force_relocation): New function, handle new relocs.
	(tc_m68hc11_fix_adjustable): New to make sure there are enough
	reloc for the linker relax pass.
	(md_apply_fix3): Handle M68HC11_RL_JUMP, M68HC11_RL_GROUP
	and VTABLE relocs.

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