[PATCH 27/29] [AARCH64] Fix up ucontext for ILP32

[Will Newton]

On 27 October 2014 07:59, Andrew Pinski <apinski@cavium.com> wrote:
> In ILP32 we want to use the same layout of the structure ucontext as LP64 so
> we need to add a padding for uc_link and change the type of uc_flags to
> be the kernel unsigned long type.
>
> * sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h (struct ucontext):
> Change the type of uc_flags to __SYSCALL_ULONG_TYPE.
> Add padding for uc_link if ILP32.
> ---
>  sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h |   10 ++++++++--
>  1 files changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h b/sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h
> index 476f5de..5d224fb 100644
> --- a/sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h
> +++ b/sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h
> @@ -46,8 +46,14 @@ typedef struct sigcontext mcontext_t;
>  /* Userlevel context.  */
>  typedef struct ucontext
>    {
> -    unsigned long uc_flags;
> -    struct ucontext *uc_link;
> +    __SYSCALL_ULONG_TYPE uc_flags;

Is there a reason to use this instead of __syscall_ulong_t?

> +#if defined(__ILP32__) && defined(__AARCH64EB__)
> +    int __pad_uc_link;
> +#endif
> +     struct ucontext *uc_link;
> +#if defined(__ILP32__) && !defined(__AARCH64EB__)
> +    int __pad_uc_link;
> +#endif
>      stack_t uc_stack;
>      __sigset_t uc_sigmask;
>      mcontext_t uc_mcontext;
> --
> 1.7.2.5
>

-- 
Will Newton
Toolchain Working Group, Linaro