Re: [LTP] [PATCH 3/3] ltp_rt_sigaction: added SPARC support

[chrubis@suse.cz]

Hi!
> Based on patches by Jose E. Marchesi <jose.marchesi@oracle.com>.
> 
> Signed-off-by: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com>
> ---
>  include/ltp_signal.h |   59 ++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 files changed, 59 insertions(+), 0 deletions(-)
> 
> diff --git a/include/ltp_signal.h b/include/ltp_signal.h
> index 31bb0b0..a60ee7c 100644
> --- a/include/ltp_signal.h
> +++ b/include/ltp_signal.h
> @@ -122,6 +122,46 @@ static inline int sig_initial(int sig)
>  
>  #endif /* __x86_64__ */
>  
> +#ifdef __sparc__
> +#if defined __arch64__ || defined __sparcv9

It's a bit more readable if we indent the innter ifdefs as:

#ifdef __sparc__
# if defined __arch64__ || defined __sparcv9

# endif
#endif /* __sparc__ */

> +/*
> + * From glibc/sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c
> + */
> +
> +static void __rt_sigreturn_stub(void)
> +{
> +	__asm__ ("mov %0, %%g1\n\t"
> +		"ta  0x6d\n\t"
> +		: /* no outputs */
> +		: "i" (__NR_rt_sigreturn));
> +}
> +
> +#else /* sparc32 */
> +
> +/*
> + * From glibc/sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c
> + */
> +
> +static void __rt_sigreturn_stub(void)
> +{
> +	__asm__ ("mov %0, %%g1\n\t"
> +		"ta  0x10\n\t"
> +		: /* no outputs */
> +		: "i" (__NR_rt_sigreturn));
> +}
> +
> +static void __sigreturn_stub(void)
> +{
> +	__asm__ ("mov %0, %%g1\n\t"
> +		"ta  0x10\n\t"
> +		: /* no outputs */
> +		: "i" (__NR_sigreturn));
> +}
> +
> +#endif
> +#endif /* __sparc__ */
> +
>  /* This is a wrapper for __NR_rt_sigaction syscall.
>   * act/oact values of INVAL_SA_PTR is used to pass
>   * an invalid pointer to syscall(__NR_rt_sigaction)
> @@ -159,9 +199,28 @@ static int ltp_rt_sigaction(int signum, const struct sigaction *act,
>  	kact.sa_restorer = restore_rt;
>  #endif
>  
> +#ifdef __sparc__
> +	unsigned long stub = 0;
> +# if defined __arch64__ || defined __sparcv9
> +	stub = ((unsigned long) &__rt_sigreturn_stub) - 8;
> +# else /* sparc32 */
> +	if ((kact.sa_flags & SA_SIGINFO) != 0)
> +		stub = ((unsigned long) &__rt_sigreturn_stub) - 8;
> +	else
> +		stub = ((unsigned long) &__sigreturn_stub) - 8;
> +# endif
> +#endif

Here they are intended correctly.

-- 
Cyril Hrubis
chrubis@suse.cz

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