From: Andreas Schwab <schwab@linux-m68k.org>
To: Kuan-Wei Chiu <visitorckw@gmail.com>
Cc: geert@linux-m68k.org, ast@kernel.org, daniel@iogearbox.net,
andrii@kernel.org, eddyz87@gmail.com, memxor@gmail.com,
martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev,
jolsa@kernel.org, jserv@ccns.ncku.edu.tw, eleanor15x@gmail.com,
marscheng@google.com, linux-kernel@vger.kernel.org,
linux-m68k@lists.linux-m68k.org, bpf@vger.kernel.org,
Daniel Palmer <daniel@thingy.jp>
Subject: Re: [PATCH bpf-next v3] m68k, bpf: Add initial BPF JIT compiler support
Date: Tue, 12 May 2026 19:32:44 +0200 [thread overview]
Message-ID: <87h5oc4jpf.fsf@igel.home> (raw)
In-Reply-To: <20260511212756.3163955-1-visitorckw@gmail.com> (Kuan-Wei Chiu's message of "Mon, 11 May 2026 21:27:56 +0000")
On Mai 11 2026, Kuan-Wei Chiu wrote:
> +
> + emit_16(ctx, 0x4a80 | d_lo); /* tst.l d_lo */
> + emit_16(ctx, 0x6b04); /* bmi.s .+6 */
> + emit_16(ctx, 0x7000 | (d_hi << 9)); /* moveq #0, d_hi */
> + emit_16(ctx, 0x6002); /* bra.s .+4 */
> + emit_16(ctx, 0x70ff | (d_hi << 9)); /* moveq #-1, d_hi */
I think this could be "tst.l d_lo; smi d_hi; extb.l d_hi".
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
prev parent reply other threads:[~2026-05-12 17:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-11 21:27 [PATCH bpf-next v3] m68k, bpf: Add initial BPF JIT compiler support Kuan-Wei Chiu
2026-05-11 22:12 ` bot+bpf-ci
2026-05-12 11:57 ` Greg Ungerer
2026-05-12 17:32 ` Andreas Schwab [this message]
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