PATCH gas/arm support for VFP

[Richard Earnshaw]

Finally, this is what it has all been leading up to...

This patch adds support to the assembler for the new VFP instructions, 
as defined in the ARM Architecture Reference Manual (second edition).

R.

2002-01-15  Richard Earnshaw  <rearnsha@arm.com>

	Support for VFP instructions
	* tc-arm.c (CP_WB_OK, CP_NO_WB): New defines.
	(cp_address_required_here): New argument wb_ok.  When false, do not
	accept write-back forms of addressing.  Change all callers.
	(FPU_VFP_EXT_NONE, FPU_VFP_EXT_V1xD, FPU_VFP_VFP_V1)
	(FPU_VFP_EXT_V2): Define.
	(FPU_ARCH_VFP, FPU_ARCH_VFP_V1xD, FPU_ARCH_VFP_V1, FPU_ARCH_VFP_V2):
	Define in terms of above.
	(vfp_dp_reg_pos, vfp_sp_reg_pos, vfp_ldstm_type): New enums.
	(vfp_reg): New struct.
	(vfp_regs): New array of registers.
	(insns): Add VFP instructions.
	(sn_table): New array of VFP single-precision register names.
	(dn_table): New array of VFP double-precision register names.
	(all_reg_maps): Add the new register tables.
	(arm_reg_type): Add new values for above.  Increase RET_TYPE_MAX.
	(vfp_sp_reg_required_here, vfp_dp_reg_required_here, do_vfp_sp_monadic)
	(do_vfp_dp_monadic, do_vfp_sp_dyadic, do_vfp_dp_dyadic)
	(do_vfp_reg_from_sp, do_vfp_sp_reg2, do_vfp_sp_from_reg)
	(do_vfp_reg_from_dp, do_vfp_reg2_from_dp, do_vfp_dp_from_reg)
	(do_vfp_dp_from_reg2, vfp_psr_parse, vfp_psr_required_here)
	(do_vfp_reg_from_ctrl, do_vfp_ctrl_from_reg, do_vfp_sp_ldst)
	(do_vfp_dp_ldst, vfp_sp_reg_list, vfp_dp_reg_list, vfp_sp_ldstm)
	(vfp_dp_ldstm, do_vfp_sp_ldstmia, do_vfp_sp_ldstmdb, do_vfp_ldstmia)
	(do_vfp_dp_ldstmdb, do_vfp_xp_ldstmia, do_vfp_xp_ldstmdb)
	(do_vfp_sp_compare_z, do_vfp_dp_compare_z, do_vfp_dp_sp_cvt)
	(do_vfp_sp_dp_cvt): New functions.
	(md_begin): Set soft-float flag for appropriate VFP work.
	(md_atof): Handle VFP-format doubles.
	(md_parse_option): Handle VFP command-line options.
	(md_show_usage): Display VFP command-line options.

Testsuite:

2002-01-15   Richard Earnshaw  <rearnsha@arm.com>

	* gas/arm/vfp1.s gas/arm/vf1.d: New files.
	* gas/arm/vfp1xD.s gas/arm/vf1xD.d: New files.
	* gas/arm/vfp-bad.s gas/arm/vfp-bad.l: New files.
	* gas/arm/arm.exp: Run new VFP tests.


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