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Re: [Qemu-devel] [PATCH] linux-user: Fix pipe syscall return for SPARC
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH] linux-user: Fix pipe syscall return for SPARC |
Date: |
Thu, 18 Jul 2013 11:17:44 +0100 |
Ping?
thanks
-- PMM
On 6 July 2013 17:39, Peter Maydell <address@hidden> wrote:
> SPARC is one of the CPUs which has a funny syscall ABI for the
> pipe syscall; add it to the set of special cases in do_pipe().
>
> Signed-off-by: Peter Maydell <address@hidden>
> ---
> bash is much more useful with this patch -- without it, it will
> close() stdin instead of one end of its pipe to a child process,
> so after the first time you run a program bash will exit...
>
> It's this kind of "basic stuff doesn't work" that makes me
> happier about being a bit cavalier with code cleanups,
> enabling NPTL, etc for some of the minor target archs in
> linux-user -- it's clear that some of them have simply never
> been tested for anything more serious than "run some trivial
> binary"...
>
> linux-user/syscall.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/linux-user/syscall.c b/linux-user/syscall.c
> index cdd0c28..aea9be4 100644
> --- a/linux-user/syscall.c
> +++ b/linux-user/syscall.c
> @@ -1030,6 +1030,9 @@ static abi_long do_pipe(void *cpu_env, abi_ulong
> pipedes,
> #elif defined(TARGET_SH4)
> ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1];
> return host_pipe[0];
> +#elif defined(TARGET_SPARC)
> + ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1];
> + return host_pipe[0];
> #endif
> }
>
> --
> 1.7.9.5
>
>