ptrace: introduce user_single_step_siginfo() helper

[safe/jmp/linux-2.6] / include / linux / ptrace.h

diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 1951805..56f2d63 100644 (file)
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -273,6 +273,18 @@ static inline void user_enable_block_step(struct task_struct *task)
 }
 #endif /* arch_has_block_step */
 
+#ifdef ARCH_HAS_USER_SINGLE_STEP_INFO
+extern void user_single_step_siginfo(struct task_struct *tsk,
+                               struct pt_regs *regs, siginfo_t *info);
+#else
+static inline void user_single_step_siginfo(struct task_struct *tsk,
+                               struct pt_regs *regs, siginfo_t *info)
+{
+       memset(info, 0, sizeof(*info));
+       info->si_signo = SIGTRAP;
+}
+#endif
+
 #ifndef arch_ptrace_stop_needed
 /**
  * arch_ptrace_stop_needed - Decide whether arch_ptrace_stop() should be called