---

yaml
---
r: 163521
b: refs/heads/master
c: 2fc742f
h: refs/heads/master
i:
  163519: d169526
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5a0ab35e43a6e3c69893c0091fe6a78ea8b3e443
+refs/heads/master: 2fc742f8d64c68b4a175a1dcb28351b112d63315

trunk/arch/sh/kernel/signal_32.c

@@ -40,6 +40,16 @@ struct fdpic_func_descriptor {
 	unsigned long	GOT;
 };
 
+/*
+ * The following define adds a 64 byte gap between the signal
+ * stack frame and previous contents of the stack.  This allows
+ * frame unwinding in a function epilogue but only if a frame
+ * pointer is used in the function.  This is necessary because
+ * current gcc compilers (<4.3) do not generate unwind info on
+ * SH for function epilogues.
+ */
+#define UNWINDGUARD 64
+
 /*
  * Atomically swap in the new signal mask, and wait for a signal.
  */
@@ -327,7 +337,7 @@ get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size)
 			sp = current->sas_ss_sp + current->sas_ss_size;
 	}
 
-	return (void __user *)((sp - frame_size) & -8ul);
+	return (void __user *)((sp - (frame_size+UNWINDGUARD)) & -8ul);
 }
 
 /* These symbols are defined with the addresses in the vsyscall page.