From: "Keith Packard" <keithp@keithp.com>
To: Alistair Francis <alistair23@gmail.com>,
Peter Maydell <peter.maydell@linaro.org>
Cc: "Atish Patra" <Atish.Patra@wdc.com>,
"Palmer Dabbelt" <palmer@dabbelt.com>,
"Alex Bennée" <alex.bennee@linaro.org>,
"QEMU Developers" <qemu-devel@nongnu.org>
Subject: Re: [PATCH] Semihost SYS_READC implementation (v4)
Date: Thu, 14 Nov 2019 09:43:07 -0800 [thread overview]
Message-ID: <8736equzf8.fsf@keithp.com> (raw)
In-Reply-To: <CAKmqyKNneo1NOn=mPmFmE-AxiaJPC2oiykZsW49Soiy=1aW__g@mail.gmail.com>
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Alistair Francis <alistair23@gmail.com> writes:
> This sounds like something that the platform spec should contain.
I'm frankly happy with it specifying the semantics by reference to the
ARM docs -- that way we can easily share existing code without concern
about subtle semantic differences.
The only thing that would be useful is to clarify the low-level ABI
details about argument passing, but given that the ARM semihosting spec
passes arguments in the standard registers, extrapolating that to RISC-V
is not exactly difficult.
> +Atish +Palmer who are in charge of that.
>
> @Keith maybe you should contact the platform spec group and ask them
> to look into this?
I can certainly ask to have the argument passing details clarified; I
doubt that group would be interested in adopting the whole semihosting
spec and publishing it separately.
--
-keith
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next prev parent reply other threads:[~2019-11-14 17:44 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-23 19:26 [PATCH] Semihost SYS_READC implementation (v3) Keith Packard
2019-10-23 19:26 ` Keith Packard
2019-10-24 17:33 ` no-reply
2019-10-24 17:33 ` no-reply
2019-10-24 18:54 ` Paolo Bonzini
2019-10-24 18:54 ` Paolo Bonzini
2019-10-24 22:46 ` [PATCH] Semihost SYS_READC implementation (v4) Keith Packard
2019-10-25 9:51 ` Alex Bennée
2019-10-25 16:36 ` Keith Packard
2019-10-25 16:49 ` Peter Maydell
2019-10-25 19:15 ` Keith Packard
2019-10-25 20:53 ` Peter Maydell
2019-10-25 23:18 ` Keith Packard
2019-11-04 20:42 ` [PATCH] Semihost SYS_READC implementation (v6) Keith Packard
2019-11-04 20:42 ` Keith Packard
2019-12-17 8:38 ` Alex Bennée
2019-12-17 8:38 ` Alex Bennée
2019-12-17 9:08 ` Paolo Bonzini
2019-12-17 9:08 ` Paolo Bonzini
2019-12-17 9:51 ` Alex Bennée
2019-12-17 9:51 ` Alex Bennée
2019-12-17 10:04 ` Paolo Bonzini
2019-12-17 10:04 ` Paolo Bonzini
2019-12-17 12:14 ` [RFC PATCH] semihosting: suspend recieving CPU when blocked (HACK, WIP) Alex Bennée
2019-12-17 12:22 ` Paolo Bonzini
2019-12-17 13:42 ` Alex Bennée
2019-12-17 13:48 ` Paolo Bonzini
2019-12-17 14:18 ` Alex Bennée
2019-12-17 14:39 ` Paolo Bonzini
2019-12-17 14:39 ` Paolo Bonzini
2019-12-18 17:36 ` Alex Bennée
2019-12-18 21:23 ` Paolo Bonzini
2019-11-05 5:10 ` [PATCH] Semihost SYS_READC implementation (v4) Keith Packard
2019-11-11 14:51 ` Peter Maydell
2019-11-14 15:46 ` Alistair Francis
2019-11-14 17:43 ` Keith Packard [this message]
2019-11-14 17:39 ` Keith Packard
2019-11-14 17:47 ` Peter Maydell
2019-11-14 19:20 ` Peter Maydell
2019-11-14 16:14 ` Peter Maydell
2019-11-14 18:05 ` Keith Packard
2019-11-14 18:18 ` Peter Maydell
2019-11-14 19:18 ` Richard Henderson
2019-11-14 19:29 ` Peter Maydell
2019-11-14 20:52 ` Richard Henderson
2019-11-14 21:04 ` Peter Maydell
2019-11-14 22:26 ` Keith Packard
2019-11-15 10:54 ` Peter Maydell
2019-11-15 23:40 ` Keith Packard
2019-10-25 17:02 ` Alex Bennée
2019-10-25 18:17 ` no-reply
2019-10-25 18:20 ` no-reply
2019-10-24 17:43 ` [PATCH] Semihost SYS_READC implementation (v3) no-reply
2019-10-24 17:43 ` no-reply
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