[PATCH] RISC-V: Add Zama16b extension support

[Nelson Chu]

Okay, if Gcc already supported it then we should at least recognize it in
Binutils.  Please commit, thanks.

Nelson

Wang Yaduo <wangyaduo@linux.alibaba.com>

> bfd/ChangeLog:
>
>         * elfxx-riscv.c (riscv_supported_std_z_ext): Add Zama16b.
>
> gas/ChangeLog:
>
>         * NEWS: Mention Zama16b.
>         * testsuite/gas/riscv/march-help.l: Add Zama16b.
> ---
> Hi all,
>
> I noticed that using -march with zama16b on current trunk triggers an
> assembler error(https://godbolt.org/z/ed1EdfaKr). GCC has supported the
> extension but it seems that the binutils misses it.
>
>  bfd/elfxx-riscv.c                    | 1 +
>  gas/NEWS                             | 1 +
>  gas/testsuite/gas/riscv/march-help.l | 1 +
>  3 files changed, 3 insertions(+)
>
> diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c
> index c3cb4197ba8..0895128c048 100644
> --- a/bfd/elfxx-riscv.c
> +++ b/bfd/elfxx-riscv.c
> @@ -1494,6 +1494,7 @@ static const struct riscv_supported_ext
> riscv_supported_std_z_ext[] =
>    {"zacas",            ISA_SPEC_CLASS_DRAFT,           1, 0, 0 },
>    {"zalasr",           ISA_SPEC_CLASS_DRAFT,           1, 0,  0 },
>    {"zalrsc",           ISA_SPEC_CLASS_DRAFT,           1, 0, 0 },
> +  {"zama16b",          ISA_SPEC_CLASS_DRAFT,           1, 0, 0 },
>    {"zawrs",            ISA_SPEC_CLASS_DRAFT,           1, 0, 0 },
>    {"zfbfmin",          ISA_SPEC_CLASS_DRAFT,           1, 0, 0 },
>    {"zfa",              ISA_SPEC_CLASS_DRAFT,           1, 0, 0 },
> diff --git a/gas/NEWS b/gas/NEWS
> index 165e23361bb..940e8f9dd19 100644
> --- a/gas/NEWS
> +++ b/gas/NEWS
> @@ -19,6 +19,7 @@ Changes in 2.47:
>
>  * Add support for RISC-V standard extensions:
>    zalasr v1.0, svrsw60t59b v1.0, zvabd v1.0, smpmpmt v1.0,
> +  zama16b v1.0,
>    zvqwdota8i, zvqwdota16i, zvfwdota16bf and zvfqwdota8f v1.0,
>    zvqwbdota8i, zvqwbdota16i, zvfwbdota16bf, zvfqwbdota8f and
>    zvfbdota32f v1.0.
> diff --git a/gas/testsuite/gas/riscv/march-help.l
> b/gas/testsuite/gas/riscv/march-help.l
> index 142369b6b1d..0ad33ddc9f9 100644
> --- a/gas/testsuite/gas/riscv/march-help.l
> +++ b/gas/testsuite/gas/riscv/march-help.l
> @@ -37,6 +37,7 @@ All available -march extensions for RISC-V:
>         zacas                                   1.0
>         zalasr                                  1.0
>         zalrsc                                  1.0
> +       zama16b                                 1.0
>         zawrs                                   1.0
>         zfbfmin                                 1.0
>         zfa                                     1.0
> --
> 2.47.1
>
>
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