On Mon, Jan 25, 2016 at 01:34:15PM -0800, Andy Lutomirski wrote:
> This tests the two ABI-preserving cases that DOSEMU cares about, and
> it also explicitly tests the new UC_SIGCONTEXT_SS and
> UC_STRICT_RESTORE_SS flags.
>
> Signed-off-by: Andy Lutomirski <[email protected]>
> ---
> tools/testing/selftests/x86/sigreturn.c | 240
> ++++++++++++++++++++++++++++----
> 1 file changed, 212 insertions(+), 28 deletions(-)
>
> diff --git a/tools/testing/selftests/x86/sigreturn.c
> b/tools/testing/selftests/x86/sigreturn.c
> index b5aa1bab7416..43e840470e32 100644
> --- a/tools/testing/selftests/x86/sigreturn.c
> +++ b/tools/testing/selftests/x86/sigreturn.c
> @@ -55,6 +55,47 @@
> #include <sys/user.h>
>
> /*
> + * Copied from asm/ucontext.h, as asm/ucontext.h conflicts badly with the
> glibc
> + * headers.
> + */
> +#ifdef __x86_64__
> +/*
> + * UC_SAVED_SS will be set when delivering 64-bit or x32 signals on
> + * kernels that save SS in the sigcontext. Kernels that set UC_SAVED_SS
> + * allow signal handlers to set UC_RESTORE_SS; if UC_RESTORE_SS is set,
> + * then sigreturn will restore SS.
> + *
> + * For compatibility with old programs, the kernel will *not* set
> + * UC_RESTORE_SS when delivering signals.
Those UC_SAVED_SS and UC_RESTORE_SS look stale to me.
> + */
> +#define UC_SIGCONTEXT_SS 0x2
> +#define UC_STRICT_RESTORE_SS 0x4
> +#endif
> +
> +/* Access rights as returned by LAR */
> +#define AR_TYPE_RODATA (0 * (1 << 9))
> +#define AR_TYPE_RWDATA (1 * (1 << 9))
> +#define AR_TYPE_RODATA_EXPDOWN (2 * (1 << 9))
> +#define AR_TYPE_RWDATA_EXPDOWN (3 * (1 << 9))
> +#define AR_TYPE_XOCODE (4 * (1 << 9))
> +#define AR_TYPE_XRCODE (5 * (1 << 9))
> +#define AR_TYPE_XOCODE_CONF (6 * (1 << 9))
> +#define AR_TYPE_XRCODE_CONF (7 * (1 << 9))
> +#define AR_TYPE_MASK (7 * (1 << 9))
> +
> +#define AR_DPL0 (0 * (1 << 13))
> +#define AR_DPL3 (3 * (1 << 13))
> +#define AR_DPL_MASK (3 * (1 << 13))
> +
> +#define AR_A (1 << 8) /* A means "accessed" */
> +#define AR_S (1 << 12) /* S means "not system" */
> +#define AR_P (1 << 15) /* P means "present" */
> +#define AR_AVL (1 << 20) /* AVL does nothing */
> +#define AR_L (1 << 21) /* L means "long mode" */
> +#define AR_DB (1 << 22) /* D or B, depending on
> type */
> +#define AR_G (1 << 23) /* G means "limit in pages" */
Why not include the kernel header instead of repeating it here again?
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
