aboutsummaryrefslogtreecommitdiff
path: root/arch/microblaze/kernel
diff options
context:
space:
mode:
authorAl Viro <viro@zeniv.linux.org.uk>2012-12-23 03:08:53 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2013-02-03 18:16:01 -0500
commit4a9d32d377e1facca204cc1c6856406be8b53fa3 (patch)
treea63e86ba6ef195c88660d2a36f474c3a81d1ab6a /arch/microblaze/kernel
parent0aa0203fb43f04714004b2c4ad33b858e240555d (diff)
downloadlinux-4a9d32d377e1facca204cc1c6856406be8b53fa3.tar.gz
microblaze: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/microblaze/kernel')
-rw-r--r--arch/microblaze/kernel/signal.c17
1 files changed, 2 insertions, 15 deletions
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index ac3d0a0f481..dfd61e2f118 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -41,13 +41,6 @@
#include <asm/cacheflush.h>
#include <asm/syscalls.h>
-asmlinkage long
-sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
- struct pt_regs *regs)
-{
- return do_sigaltstack(uss, uoss, regs->r1);
-}
-
/*
* Do a signal return; undo the signal stack.
*/
@@ -109,9 +102,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &rval))
goto badframe;
- /* It is more difficult to avoid calling this function than to
- call it and ignore errors. */
- if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->r1) == -EFAULT)
+ if (restore_altstack(&frame->uc.uc_stack))
goto badframe;
return rval;
@@ -194,11 +185,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
/* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
err |= __put_user(NULL, &frame->uc.uc_link);
- err |= __put_user((void __user *)current->sas_ss_sp,
- &frame->uc.uc_stack.ss_sp);
- err |= __put_user(sas_ss_flags(regs->r1),
- &frame->uc.uc_stack.ss_flags);
- err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+ err |= __save_altstack(&frame->uc.uc_stack, regs->r1);
err |= setup_sigcontext(&frame->uc.uc_mcontext,
regs, set->sig[0]);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));