commit 6bc43c9ee92b4146b56e8758cec73f0990410326
author Al Viro <viro@zeniv.linux.org.uk> Sun Dec 23 02:19:34 2012 -0500
committer Al Viro <viro@zeniv.linux.org.uk> Sun Feb 03 18:15:56 2013 -0500
tree 407304e2b901b0fd63504e3b1cac7cead529aab5
parent 0aa0203fb43f04714004b2c4ad33b858e240555d

h8300: switch to generic sigaltstack

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/h8300/Kconfig

diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 2d2efb6..667999e 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -9,6 +9,7 @@
 	select GENERIC_IRQ_SHOW
 	select GENERIC_CPU_DEVICES
 	select MODULES_USE_ELF_RELA
+	select GENERIC_SIGALTSTACK
 
 config SYMBOL_PREFIX
 	string

arch/h8300/kernel/signal.c

diff --git a/arch/h8300/kernel/signal.c b/arch/h8300/kernel/signal.c
index 0e81b96..2d37418 100644
--- a/arch/h8300/kernel/signal.c
+++ b/arch/h8300/kernel/signal.c
@@ -89,13 +89,6 @@
 	return ret;
 }
 
-asmlinkage int
-sys_sigaltstack(const stack_t *uss, stack_t *uoss)
-{
-	return do_sigaltstack(uss, uoss, rdusp());
-}
-
-
 /*
  * Do a signal return; undo the signal stack.
  *
@@ -212,7 +205,7 @@
 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &er0))
 		goto badframe;
 
-	if (do_sigaltstack(&frame->uc.uc_stack, NULL, usp) == -EFAULT)
+	if (restore_altstack(&frame->uc.uc_stack))
 		goto badframe;
 
 	return er0;
@@ -358,11 +351,7 @@
 	/* Create the ucontext.  */
 	err |= __put_user(0, &frame->uc.uc_flags);
 	err |= __put_user(0, &frame->uc.uc_link);
-	err |= __put_user((void *)current->sas_ss_sp,
-			  &frame->uc.uc_stack.ss_sp);
-	err |= __put_user(sas_ss_flags(rdusp()),
-			  &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, rdusp());
 	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]);
 	err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set));
 	if (err)