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authorAl Viro <viro@zeniv.linux.org.uk>2012-12-23 03:19:49 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2013-02-03 18:16:05 -0500
commitfaec5a96a024c1256b289253f3609b4a5f6f3576 (patch)
treecb05b67ef299935638713a3ccdcbe31d65bfa550 /arch/openrisc/kernel
parent0aa0203fb43f04714004b2c4ad33b858e240555d (diff)
downloadlinux-faec5a96a024c1256b289253f3609b4a5f6f3576.tar.gz
openrisc: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/openrisc/kernel')
-rw-r--r--arch/openrisc/kernel/entry.S4
-rw-r--r--arch/openrisc/kernel/signal.c15
2 files changed, 2 insertions, 17 deletions
diff --git a/arch/openrisc/kernel/entry.S b/arch/openrisc/kernel/entry.S
index 5e5b30601bb..54afd0a129f 100644
--- a/arch/openrisc/kernel/entry.S
+++ b/arch/openrisc/kernel/entry.S
@@ -1083,10 +1083,6 @@ ENTRY(__sys_fork)
l.j _fork_save_extra_regs_and_call
l.addi r3,r1,0
-ENTRY(sys_sigaltstack)
- l.j _sys_sigaltstack
- l.addi r5,r1,0
-
ENTRY(sys_rt_sigreturn)
l.j _sys_rt_sigreturn
l.addi r3,r1,0
diff --git a/arch/openrisc/kernel/signal.c b/arch/openrisc/kernel/signal.c
index ddedc8a7786..ae167f7e081 100644
--- a/arch/openrisc/kernel/signal.c
+++ b/arch/openrisc/kernel/signal.c
@@ -33,12 +33,6 @@
#define DEBUG_SIG 0
-asmlinkage long
-_sys_sigaltstack(const stack_t *uss, stack_t *uoss, struct pt_regs *regs)
-{
- return do_sigaltstack(uss, uoss, regs->sp);
-}
-
struct rt_sigframe {
struct siginfo *pinfo;
void *puc;
@@ -103,9 +97,7 @@ asmlinkage long _sys_rt_sigreturn(struct pt_regs *regs)
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
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->sp) == -EFAULT)
+ if (restore_altstack(&frame->uc.uc_stack))
goto badframe;
return regs->gpr[11];
@@ -205,10 +197,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));
err |= __put_user(0, &frame->uc.uc_flags);
err |= __put_user(NULL, &frame->uc.uc_link);
- err |= __put_user((void *)current->sas_ss_sp,
- &frame->uc.uc_stack.ss_sp);
- err |= __put_user(sas_ss_flags(regs->sp), &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->sp);
err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));