gas TC_PARSE_CONS_EXPRESSION communication with TC_CONS_FIX_NEW

gas TC_PARSE_CONS_EXPRESSION communication with TC_CONS_FIX_NEW

A number of targets pass extra information from TC_PARSE_CONS_EXPRESSION
to TC_CONS_FIX_NEW via static variables.  That's OK, but not best
practice.  tc-ppc.c goes further in implementing its own replacement
for cons(), because the generic one doesn't allow relocation modifiers
on constants.  This patch fixes both of these warts.

	* gas/config/tc-alpha.h (TC_CONS_FIX_NEW): Add RELOC parameter.
	* gas/config/tc-arc.c (arc_cons_fix_new): Add reloc parameter.
	* gas/config/tc-arc.h (arc_cons_fix_new): Update prototype.
	(TC_CONS_FIX_NEW): Add RELOC parameter.
	* gas/config/tc-arm.c (cons_fix_new_arm): Similarly
	* gas/config/tc-arm.h (cons_fix_new_arm, TC_CONS_FIX_NEW): Similarly.
	* gas/config/tc-cr16.c (cr16_cons_fix_new): Similarly.
	* gas/config/tc-cr16.h (cr16_cons_fix_new, TC_CONS_FIX_NEW): Similarly.
	* gas/config/tc-crx.h (TC_CONS_FIX_NEW): Similarly.
	* gas/config/tc-m32c.c (m32c_cons_fix_new): Similarly.
	* gas/config/tc-m32c.h (m32c_cons_fix_new, TC_CONS_FIX_NEW): Similarly.
	* gas/config/tc-mn10300.c (mn10300_cons_fix_new): Similarly.
	* gas/config/tc-mn10300.h (mn10300_cons_fix_new, TC_CONS_FIX_NEW):
	Similarly.
	* gas/config/tc-ns32k.c (cons_fix_new_ns32k): Similarly.
	* gas/config/tc-ns32k.h (cons_fix_new_ns32k): Similarly.
	* gas/config/tc-pj.c (pj_cons_fix_new_pj): Similarly.
	* gas/config/tc-pj.h (pj_cons_fix_new_pj, TC_CONS_FIX_NEW): Similarly.
	* gas/config/tc-rx.c (rx_cons_fix_new): Similarly.
	* gas/config/tc-rx.h (rx_cons_fix_new, TC_CONS_FIX_NEW): Similarly.
	* gas/config/tc-sh.c (sh_cons_fix_new): Similarly.
	* gas/config/tc-sh.h (sh_cons_fix_new, TC_CONS_FIX_NEW): Similarly.
	* gas/config/tc-tic54x.c (tic54x_cons_fix_new): Similarly.
	* gas/config/tc-tic54x.h (tic54x_cons_fix_new, TC_CONS_FIX_NEW):
	Similarly.
	* gas/config/tc-tic6x.c (tic6x_cons_fix_new): Similarly.
	* gas/config/tc-tic6x.h (tic6x_cons_fix_new, TC_CONS_FIX_NEW):
	Similarly.
	* gas/config/tc-arc.c (arc_parse_cons_expression): Return reloc.
	* gas/config/tc-arc.h (arc_parse_cons_expression): Update proto.
	* gas/config/tc-avr.c (exp_mod_data): Make global.
	(pexp_mod_data): Delete.
	(avr_parse_cons_expression): Return exp_mod_data pointer.
	(avr_cons_fix_new): Add exp_mod_data_t pointer param.
	(exp_mod_data_t): Move typedef..
	* gas/config/tc-avr.h: ..to here.
	(exp_mod_data): Declare.
	(TC_PARSE_CONS_RETURN_TYPE, TC_PARSE_CONS_RETURN_NONE): Define.
	(avr_parse_cons_expression, avr_cons_fix_new): Update prototype.
	(TC_CONS_FIX_NEW): Update.
	* gas/config/tc-hppa.c (hppa_field_selector): Delete static var.
	(cons_fix_new_hppa): Add hppa_field_selector param.
	(fix_new_hppa): Adjust.
	(parse_cons_expression_hppa): Return field selector.
	* gas/config/tc-hppa.h (parse_cons_expression_hppa): Update proto.
	(cons_fix_new_hppa): Likewise.
	(TC_PARSE_CONS_RETURN_TYPE, TC_PARSE_CONS_RETURN_NONE): Define.
	* gas/config/tc-i386.c (got_reloc): Delete static var.
	(x86_cons_fix_new): Add reloc param.
	(x86_cons): Return got reloc.
	* gas/config/tc-i386.h (x86_cons, x86_cons_fix_new): Update proto.
	(TC_CONS_FIX_NEW): Add RELOC param.
	* gas/config/tc-ia64.c (ia64_cons_fix_new): Add reloc param.  Adjust
	calls.
	* gas/config/tc-ia64.h (ia64_cons_fix_new): Update prototype.
	(TC_CONS_FIX_NEW): Add reloc param.
	* gas/config/tc-microblaze.c (parse_cons_expression_microblaze):
	Return reloc.
	(cons_fix_new_microblaze): Add reloc param.
	* gas/config/tc-microblaze.h: Formatting.
	(parse_cons_expression_microblaze): Update proto.
	(cons_fix_new_microblaze): Likewise.
	* gas/config/tc-nios2.c (nios2_tls_ldo_reloc): Delete static var.
	(nios2_cons): Return ldo reloc.
	(nios2_cons_fix_new): Delete.
	* gas/config/tc-nios2.h (nios2_cons): Update prototype.
	(nios2_cons_fix_new, TC_CONS_FIX_NEW): Delete.
	* gas/config/tc-ppc.c (md_pseudo_table): Remove quad, long, word,
	short.  Make llong use cons.
	(ppc_elf_suffix): Return BFD_RELOC_NONE rather than BFD_RELOC_UNUSED.
	(ppc_elf_cons): Delete.
	(ppc_elf_parse_cons): New function.
	(ppc_elf_validate_fix): Don't check for BFD_RELOC_UNUSED.
	(md_assemble): Use BFD_RELOC_NONE rather than BFD_RELOC_UNUSED.
	* gas/config/tc-ppc.h (TC_PARSE_CONS_EXPRESSION): Define
	(ppc_elf_parse_cons): Declare.
	* gas/config/tc-sparc.c (sparc_cons_special_reloc): Delete static var.
	(sparc_cons): Return reloc specifier.
	(cons_fix_new_sparc): Add reloc specifier param.
	(sparc_cfi_emit_pcrel_expr): Use emit_expr_with_reloc.
	* gas/config/tc-sparc.h (TC_PARSE_CONS_RETURN_TYPE): Define.
	(TC_PARSE_CONS_RETURN_NONE): Define.
	(sparc_cons, cons_fix_new_sparc): Update prototype.
	* gas/config/tc-v850.c (hold_cons_reloc): Delete static var.
	(v850_reloc_prefix): Use BFD_RELOC_NONE rather than BFD_RELOC_UNUSED.
	(md_assemble): Likewise.
	(parse_cons_expression_v850): Return reloc.
	(cons_fix_new_v850): Add reloc parameter.
	* gas/config/tc-v850.h (parse_cons_expression_v850): Update proto.
	(cons_fix_new_v850): Likewise.
	* gas/config/tc-vax.c (vax_cons_special_reloc): Delete static var.
	(vax_cons): Return reloc.
	(vax_cons_fix_new): Add reloc parameter.
	* gas/config/tc-vax.h (vax_cons, vax_cons_fix_new): Update proto.
	* gas/config/tc-xstormy16.c (xstormy16_cons_fix_new): Add reloc param.
	* gas/config/tc-xstormy16.h (xstormy16_cons_fix_new): Update proto.
	* gas/dwarf2dbg.c (TC_PARSE_CONS_RETURN_NONE): Provide default.
	(emit_fixed_inc_line_addr): Adjust exmit_expr_fix calls.
	* gas/read.c (TC_PARSE_CONS_EXPRESSION): Return value.
	(do_parse_cons_expression): Adjust.
	(cons_worker): Pass return value from TC_PARSE_CONS_EXPRESSION
	to emit_expr_with_reloc.
	(emit_expr_with_reloc): New function handling reloc, mostly
	extracted from..
	(emit_expr): ..here.
	(emit_expr_fix): Add reloc param.  Adjust TC_CONS_FIX_NEW invocation.
	Handle reloc.
	(parse_mri_cons): Convert to ISO.
	* gas/read.h (TC_PARSE_CONS_RETURN_TYPE): Define.
	(TC_PARSE_CONS_RETURN_NONE): Define.
	(emit_expr_with_reloc): Declare.
	(emit_expr_fix): Update prototype.
	* gas/write.c (write_object_file): Update TC_CONS_FIX_NEW invocation.