linux-kernel - Re: [PATCH 00/10] RISC-V: Refactor instructions

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Date:   Fri, 18 Aug 2023 09:30:32 +0200
From:   Andrew Jones <ajones@...tanamicro.com>
To:     Palmer Dabbelt <palmer@...belt.com>
Cc:     Charlie Jenkins <charlie@...osinc.com>, jrtc27@...c27.com,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, kvm-riscv@...ts.infradead.org,
        bpf@...r.kernel.org, Paul Walmsley <paul.walmsley@...ive.com>,
        aou@...s.berkeley.edu, peterz@...radead.org, jpoimboe@...nel.org,
        jbaron@...mai.com, rostedt@...dmis.org,
        Ard Biesheuvel <ardb@...nel.org>, anup@...infault.org,
        atishp@...shpatra.org, ast@...nel.org, daniel@...earbox.net,
        andrii@...nel.org, martin.lau@...ux.dev, song@...nel.org,
        yhs@...com, john.fastabend@...il.com, kpsingh@...nel.org,
        sdf@...gle.com, haoluo@...gle.com, jolsa@...nel.org,
        bjorn@...nel.org, luke.r.nels@...il.com, xi.wang@...il.com,
        namcaov@...il.com
Subject: Re: [PATCH 00/10] RISC-V: Refactor instructions

On Thu, Aug 17, 2023 at 10:52:22AM -0700, Palmer Dabbelt wrote:
> On Thu, 17 Aug 2023 09:43:16 PDT (-0700), Charlie Jenkins wrote:
...
> > It seems to me that it will be significantly more challenging to use
> > riscv-opcodes than it would for people to just hand create the macros
> > that they need.
> 
> Ya, riscv-opcodes is pretty custy.  We stopped using it elsewhere ages ago.

Ah, pity I didn't know the history of it or I wouldn't have suggested it,
wasting Charlie's time (sorry, Charlie!). So everywhere that needs
encodings are manually scraping them from the PDFs? Or maybe we can write
our own parser which converts adoc/wavedrom files[1] to Linux C?

[1] https://github.com/riscv/riscv-isa-manual/tree/main/src/images/wavedrom

Thanks,
drew