2015年3月19日 19:34于 "Jan Stancek" <jstan...@redhat.com>写道：
>
>
>
>
>
> ----- Original Message -----
> > From: "Zhang Jian(Bamvor)" <bamvor.zhangj...@huawei.com>
> > To: ltp-list@lists.sourceforge.net
> > Cc: "bintian wang" <bintian.w...@huawei.com>, yangyingli...@huawei.com,
apin...@cavium.com, dingtianh...@huawei.com
> > Sent: Thursday, 19 March, 2015 6:16:36 AM
> > Subject: [LTP] [RFC PATCH 1/3] ARM64: ILP32: modify struct
kernel_sigaction
> >
> > From: Yang Yingliang <yangyingli...@huawei.com>
> >
> > In ILP32, the sigaction struct is the same as AARCH64.
> > To allow for this to work, we use a long long fields and
> > then add extra casts when converting between the user
> > exposed struct and the kernel exposed struct.
> > The modify is came from a patch of glibc,
> > the commit is 9266f4b060f6("Add kernel_sigaction.h for AARCH64 ILP32").
> >
> > Signed-off-by: Yang Yingliang <yangyingli...@huawei.com>
> > ---
> > include/lapi/rt_sigaction.h | 12 ++++++------
> > 1 file changed, 6 insertions(+), 6 deletions(-)
> >
> > diff --git a/include/lapi/rt_sigaction.h b/include/lapi/rt_sigaction.h
> > index 46f6a50..2b1365a 100644
> > --- a/include/lapi/rt_sigaction.h
> > +++ b/include/lapi/rt_sigaction.h
> > @@ -34,9 +34,9 @@
> > #define INVAL_SA_PTR ((void *)-1)
> >
> > struct kernel_sigaction {
> > - __sighandler_t k_sa_handler;
> > - unsigned long sa_flags;
> > - void (*sa_restorer) (void);
> > + unsigned long long k_sa_handler;
> > + unsigned long long sa_flags;
> > + unsigned long long sa_restorer;
>
> Isn't this going to break i386? (long is 4, long long is 8).
It might be. We just test on the aarch64 platform in different abi(ilp32
and lp64). Sorry for this. I will work on it tomorrow.
regards
bamvor
>
> Regards,
> Jan
>
> > sigset_t sa_mask;
> > };
> >
> > @@ -159,7 +159,7 @@ static int ltp_rt_sigaction(int signum, const struct
> > sigaction *act,
> > if (act == INVAL_SA_PTR) {
> > kact_p = INVAL_SA_PTR;
> > } else if (act) {
> > - kact.k_sa_handler = act->sa_handler;
> > + kact.k_sa_handler = (unsigned long
long)(uintptr_t)act->sa_handler;
> > memcpy(&kact.sa_mask, &act->sa_mask, sizeof(sigset_t));
> > kact.sa_flags = act->sa_flags;
> > kact.sa_restorer = NULL;
> > @@ -203,12 +203,12 @@ static int ltp_rt_sigaction(int signum, const
struct
> > sigaction *act,
> >
> > if (ret >= 0) {
> > if (oact && (oact != INVAL_SA_PTR)) {
> > - oact->sa_handler = koact.k_sa_handler;
> > + oact->sa_handler =
(void*)(uintptr_t)koact.k_sa_handler;
> > memcpy(&oact->sa_mask, &koact.sa_mask,
> > sizeof(sigset_t));
> > oact->sa_flags = koact.sa_flags;
> > #ifdef HAVE_SA_RESTORER
> > - oact->sa_restorer = koact.sa_restorer;
> > + oact->sa_restorer =
(void*)(uintptr_t)koact.sa_restorer;
> > #endif
> > }
> > }
> > --
> > 1.8.4.5
> >
> >
> >
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