Re: [PATCH v1] target/riscv: update disas.c for xnor/orn/andn and slli.uw

[Alistair Francis]

On Sat, Jan 21, 2023 at 1:16 AM Philipp Tomsich
<philipp.tomsich@vrull.eu> wrote:
>
> The decoding of the following instructions from Zb[abcs] currently
> contains decoding/printing errors:
>  * xnor,orn,andn: the rs2 operand is not being printed
>  * slli.uw: decodes and prints the immediate shift-amount as a
>             register (e.g. 'shift-by-2' becomes 'sp') instead of
>             interpreting this as an immediate
>
> This commit updates the instruction descriptions to use the
> appropriate decoding/printing formats.
>
> Signed-off-by: Philipp Tomsich <philipp.tomsich@vrull.eu>

Thanks!

Applied to riscv-to-apply.next

Alistair

>
> ---
>
>  disas/riscv.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/disas/riscv.c b/disas/riscv.c
> index d216b9c39b..ddda687c13 100644
> --- a/disas/riscv.c
> +++ b/disas/riscv.c
> @@ -1626,9 +1626,9 @@ const rv_opcode_data opcode_data[] = {
>      { "cpop", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
>      { "sext.h", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
>      { "sext.b", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
> -    { "xnor", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
> -    { "orn", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
> -    { "andn", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
> +    { "xnor", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
> +    { "orn", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
> +    { "andn", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
>      { "rol", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
>      { "ror", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
>      { "sh1add", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
> @@ -1647,7 +1647,7 @@ const rv_opcode_data opcode_data[] = {
>      { "clzw", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
>      { "clzw", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
>      { "cpopw", rv_codec_r, rv_fmt_rd_rs1, NULL, 0, 0, 0 },
> -    { "slli.uw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
> +    { "slli.uw", rv_codec_i_sh5, rv_fmt_rd_rs1_imm, NULL, 0, 0, 0 },
>      { "add.uw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
>      { "rolw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
>      { "rorw", rv_codec_r, rv_fmt_rd_rs1_rs2, NULL, 0, 0, 0 },
> --
> 2.34.1
>
>