[PATCH 2/6] MIPS/GAS: Split Loongson EXT Instructions from loongson3a

[Paul Hua]

MIPS/GAS: Split Loongson EXT Instructions from loongson3a.

2018-08-04  Chenghua Xu  <paul.hua.gm@gmail.com>

bfd/
        * elfxx-mips.c (infer_mips_abiflags): Use ases instead of
        isa_ext for infer ABI flags.
        (print_mips_ases): Add Loongson EXT extension.

binutils/
        * readelf.c (print_mips_ases): Add Loongson EXT extension.

elfcpp/
        * mips.h (AFL_ASE_LOONGSON_EXT): New enum.

gas/
        * NEWS: Mention Loongson EXTensions (EXT) support.
        * config/tc-mips.c (options): Add OPTION_LOONGSON_EXT and
        OPTION_NO_LOONGSON_EXT.
        (md_longopts): Likewise.
        (mips_ases): Define availability for EXT.
        (mips_convert_ase_flags): Map ASE_LOONGSON_EXT to
        AFL_ASE_LOONGSON_EXT.
        (mips_cpu_info_table): Add ASE_LOONGSON_EXT for loongson3a.
        (md_show_usage): Add help for -mloongson-ext and
        -mno-loongson-ext.
        * doc/as.texi: Document -mloongson-ext, -mno-loongson-ext.
        * doc/c-mips.texi: Document -mloongson-ext, -mno-loongson-ext,
        .set loongson-ext and .set noloongson-ext.
        * testsuite/gas/mips/loongson-mmi.d: Add ASE flag.

include/
        * elf/mips.h (AFL_ASE_LOONGSON_EXT): New macro.
        (AFL_ASE_MASK): Update to include AFL_ASE_LOONGSON_EXT.
        * opcode/mips.h (ASE_LOONGSON_EXT): New macro.

opcodes/
        * mips-dis.c (mips_arch_choices): Add EXT to loongson3a
        descriptors.
        (parse_mips_ase_option): Handle -M loongson-ext option.
        (print_mips_disassembler_options): Document -M loongson-ext.
        * mips-opc.c (IL3A): Delete.
        * mips-opc.c (LEXT): New macro.
        (mips_opcodes): Replace IL2F|IL3A marking with LEXT for EXT
        instructions.
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