RISC-V/zfh: Add half-precision floating-point v0.1 instructions.

This patch is porting from the following riscv github,
https://github.com/riscv/riscv-binutils-gdb/commits/rvv-1.0.x-zfh

And here is the draft zfh spec,
https://github.com/riscv/riscv-isa-manual/tree/zfh

bfd/
	* elfxx-riscv.c (riscv_supported_std_z_ext): Added zfh.
	(riscv_implicit_subset): Add implicit f and zicsr for zfh.
gas/
	* config/tc-riscv.c (riscv_extended_subset_supports): Handle
	INSN_CLASS*_ZFH.
	(extended_macro): Handle M_FLH and M_FSH.
	* testsuite/gas/riscv/extended/extended.exp: Updated.
	* testsuite/gas/riscv/extended/fp-zfh-insns.d: New testcase.
	* testsuite/gas/riscv/extended/fp-zfh-insns.s: Likewise.
include/
	* opcode/riscv-opc-extended.h: Added zfh encoding macros
	and DECLARE_INSN.
	* opcode/riscv.h (enum riscv_extended_insn_class): Added INSN_CLASS*_ZFH.
	(enum M_FLH, M_FSH): Added.
opcodes/
	* riscv-opc.c (riscv_draft_opcodes): Added zfh instructions.

0 files changed, 0 insertions, 0 deletions