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Diffstat (limited to 'arch/sh/kernel/signal.c')
-rw-r--r--arch/sh/kernel/signal.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/arch/sh/kernel/signal.c b/arch/sh/kernel/signal.c
index 2f1c9545b49..5213f5bc6ce 100644
--- a/arch/sh/kernel/signal.c
+++ b/arch/sh/kernel/signal.c
@@ -8,7 +8,6 @@
* SuperH version: Copyright (C) 1999, 2000 Niibe Yutaka & Kaz Kojima
*
*/
-
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
@@ -21,6 +20,7 @@
#include <linux/unistd.h>
#include <linux/stddef.h>
#include <linux/tty.h>
+#include <linux/elf.h>
#include <linux/personality.h>
#include <linux/binfmts.h>
@@ -29,8 +29,6 @@
#include <asm/pgtable.h>
#include <asm/cacheflush.h>
-#undef DEBUG
-
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
/*
@@ -312,6 +310,11 @@ get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size)
return (void __user *)((sp - frame_size) & -8ul);
}
+/* These symbols are defined with the addresses in the vsyscall page.
+ See vsyscall-trapa.S. */
+extern void __user __kernel_sigreturn;
+extern void __user __kernel_rt_sigreturn;
+
static int setup_frame(int sig, struct k_sigaction *ka,
sigset_t *set, struct pt_regs *regs)
{
@@ -340,6 +343,10 @@ static int setup_frame(int sig, struct k_sigaction *ka,
already in userspace. */
if (ka->sa.sa_flags & SA_RESTORER) {
regs->pr = (unsigned long) ka->sa.sa_restorer;
+#ifdef CONFIG_VSYSCALL
+ } else if (likely(current->mm->context.vdso)) {
+ regs->pr = VDSO_SYM(&__kernel_sigreturn);
+#endif
} else {
/* Generate return code (system call to sigreturn) */
err |= __put_user(MOVW(7), &frame->retcode[0]);
@@ -416,6 +423,10 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
already in userspace. */
if (ka->sa.sa_flags & SA_RESTORER) {
regs->pr = (unsigned long) ka->sa.sa_restorer;
+#ifdef CONFIG_VSYSCALL
+ } else if (likely(current->mm->context.vdso)) {
+ regs->pr = VDSO_SYM(&__kernel_rt_sigreturn);
+#endif
} else {
/* Generate return code (system call to rt_sigreturn) */
err |= __put_user(MOVW(7), &frame->retcode[0]);