#if defined(CONFIG_UNWINDER_ORC) || defined(CONFIG_UNWINDER_FRAME_POINTER)
/*
- * WARNING: The entire pt_regs may not be safe to dereference. In some cases,
- * only the iret frame registers are accessible. Use with caution!
+ * If 'partial' returns true, only the iret frame registers are valid.
*/
-static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state)
+static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state,
+ bool *partial)
{
if (unwind_done(state))
return NULL;
+ if (partial) {
+#ifdef CONFIG_UNWINDER_ORC
+ *partial = !state->full_regs;
+#else
+ *partial = false;
+#endif
+ }
+
return state->regs;
}
#else
-static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state)
+static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state,
+ bool *partial)
{
return NULL;
}