extern CORE_ADDR skip_trampoline_code PARAMS ((CORE_ADDR pc, char *name));
extern char *cygwin_pid_to_str PARAMS ((int pid));
-#define target_pid_to_str(PID) cygwin_pid_to_str (PID)
+
+struct frame_info;
+void child_init_frame(int x, struct frame_info *);
+CORE_ADDR child_frame_saved_pc(struct frame_info *);
+CORE_ADDR child_frame_chain(struct frame_info *);
+
+#undef FRAME_CHAIN_VALID_ALTERNATE
+#define FRAME_CHAIN_VALID_ALTERNATE 1
+
+#undef INIT_EXTRA_FRAME_INFO
+#define INIT_EXTRA_FRAME_INFO(x, f) child_init_frame(x, f)
+
+#undef FRAME_CHAIN
+#define FRAME_CHAIN child_frame_chain
+
+#undef FRAME_SAVED_PC
+#define FRAME_SAVED_PC child_frame_saved_pc