new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those

[deliverable/linux.git] / arch / x86 / um / signal.c

diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c
index bdaa08cfbcf4bc38eecc3ec57e34c5b0e62ecf2c..71cef48ea5cd5b84abb1216d24ff04b18911eaec 100644 (file)
--- a/arch/x86/um/signal.c
+++ b/arch/x86/um/signal.c
@@ -342,9 +342,7 @@ static int copy_ucontext_to_user(struct ucontext __user *uc,
 {
        int err = 0;
 
-       err |= put_user(current->sas_ss_sp, &uc->uc_stack.ss_sp);
-       err |= put_user(sas_ss_flags(sp), &uc->uc_stack.ss_flags);
-       err |= put_user(current->sas_ss_size, &uc->uc_stack.ss_size);
+       err |= __save_altstack(&uc->uc_stack, sp);
        err |= copy_sc_to_user(&uc->uc_mcontext, fp, &current->thread.regs, 0);
        err |= copy_to_user(&uc->uc_sigmask, set, sizeof(*set));
        return err;
@@ -529,10 +527,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
        /* Create the ucontext.  */
        err |= __put_user(0, &frame->uc.uc_flags);
        err |= __put_user(0, &frame->uc.uc_link);
-       err |= __put_user(me->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
-       err |= __put_user(sas_ss_flags(PT_REGS_SP(regs)),
-                         &frame->uc.uc_stack.ss_flags);
-       err |= __put_user(me->sas_ss_size, &frame->uc.uc_stack.ss_size);
+       err |= __save_altstack(&frame->uc.uc_stack, PT_REGS_SP(regs));
        err |= copy_sc_to_user(&frame->uc.uc_mcontext, &frame->fpstate, regs,
                               set->sig[0]);
        err |= __put_user(&frame->fpstate, &frame->uc.uc_mcontext.fpstate);