* config/tc-mips.h (tc_mips_regname_to_dw2regnum): Declare.

	* config/tc-mips.h (tc_mips_regname_to_dw2regnum): Declare.
	* config/tc-mipc.c (ABI_NEEDS_64BIT_REGS, ISA_HAS_64BIT_REGS,
	ISA_HAS_DROR, ISA_HAS_ROR): Reformat.
	(regname, RTYPE_MASK, RTYPE_NUM, RTYPE_FPU, RTYPE_FCC, RTYPE_VEC,
	RTYPE_GP, RTYPE_CP0, RTYPE_PC, RTYPE_ACC, RTYPE_CCC, RNUM_MASK,
	RWARN, GENERIC_REGISTER_NUMBERS, FPU_REGISTER_NAMES,
	FPU_CONDITION_CODE_NAMES, COPROC_CONDITION_CODE_NAMES,
	N32N64_SYMBOLIC_REGISTER_NAMES, O32_SYMBOLIC_REGISTER_NAMES,
	SYMBOLIC_REGISTER_NAMES, MIPS16_SPECIAL_REGISTER_NAMES,
	MDMX_VECTOR_REGISTER_NAMES, MIPS_DSP_ACCUMULATOR_NAMES, reg_names,
	reg_names_o32, reg_names_n32n64): Define register classes.
	(reg_lookup): New function, use register classes.
	(md_begin): Reserve register names in the symbol table. Simplify
	OBJ_ELF defines.
	(mips_ip): Fix comment formatting. Handle symbolic COP0 registers.
	Use reg_lookup.
	(mips16_ip): Use reg_lookup.
	(tc_get_register): Likewise.
	(tc_mips_regname_to_dw2regnum): New function.
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