x32: Export setup/restore_sigcontext from signal.c

Export setup_sigcontext() and restore_sigcontext() from signal.c, so
we can use the 64-bit versions verbatim for x32.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

2 files changed, 9 insertions, 6 deletions

diff --git a/arch/x86/include/asm/sighandling.h b/arch/x86/include/asm/sighandling.h
index 843e299e120e..ada93b3b8c66 100644
--- a/arch/x86/include/asm/sighandling.h
+++ b/arch/x86/include/asm/sighandling.h
@@ -16,4 +16,9 @@
 
 void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
 
+int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
+                       unsigned long *pax);
+int setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
+                     struct pt_regs *regs, unsigned long mask);
+
 #endif /* _ASM_X86_SIGHANDLING_H */
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index c432dc0e65f0..450fb255f877 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -60,9 +60,8 @@
         regs->seg = GET_SEG(seg) | 3;                   \
 } while (0)
 
-static int
-restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
-                   unsigned long *pax)
+int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
+                       unsigned long *pax)
 {
         void __user *buf;
         unsigned int tmpflags;
@@ -117,9 +116,8 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
         return err;
 }
 
-static int
-setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
-                 struct pt_regs *regs, unsigned long mask)
+int setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
+                     struct pt_regs *regs, unsigned long mask)
 {
         int err = 0;