[PATCH] x86: Don't require the vDSO for handling a.out signals
[linux-3.10.git] / arch / x86_64 / ia32 / ia32_signal.c
index 490f7c1b7c84f4ad36f2e724054e0a37f359d645..359eacc385094f76e4cc7d6eff8c288bda6ff4f6 100644 (file)
@@ -21,6 +21,7 @@
 #include <linux/stddef.h>
 #include <linux/personality.h>
 #include <linux/compat.h>
+#include <linux/binfmts.h>
 #include <asm/ucontext.h>
 #include <asm/uaccess.h>
 #include <asm/i387.h>
@@ -449,7 +450,11 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka,
 
        /* Return stub is in 32bit vsyscall page */
        { 
-               void __user *restorer = VSYSCALL32_SIGRETURN; 
+               void __user *restorer;
+               if (current->binfmt->hasvdso)
+                       restorer = VSYSCALL32_SIGRETURN;
+               else
+                       restorer = (void *)&frame->retcode;
                if (ka->sa.sa_flags & SA_RESTORER)
                        restorer = ka->sa.sa_restorer;       
                err |= __put_user(ptr_to_compat(restorer), &frame->pretcode);