The default implementation returns false on all targets that
provide a gdbarch_software_single_step routine, and true otherwise. */
-typedef bool (gdbarch_displaced_step_hw_singlestep_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
-extern bool gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
+typedef bool (gdbarch_displaced_step_hw_singlestep_ftype) (struct gdbarch *gdbarch);
+extern bool gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch);
extern void set_gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, gdbarch_displaced_step_hw_singlestep_ftype *displaced_step_hw_singlestep);
/* Fix up the state resulting from successfully single-stepping a