gdb/m68hc11: Use default gdbarch methods where possible

Make use of the default gdbarch methods for gdbarch_unwind_pc, and
gdbarch_unwind_sp where possible.

I have not tested this change but, by inspecting the code, I believe
the default methods are equivalent to the code being deleted.

gdb/ChangeLog:

	* m68hc11-tdep.c (m68hc11_unwind_pc): Delete.
	(m68hc11_unwind_sp): Delete.
	(m68hc11_gdbarch_init): Don't register deleted functions with
	gdbarch.

2 files changed, 7 insertions, 24 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7000944..1bfdcaf 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,12 @@
 2019-04-23  Andrew Burgess  <andrew.burgess@embecosm.com>
 
+	* m68hc11-tdep.c (m68hc11_unwind_pc): Delete.
+	(m68hc11_unwind_sp): Delete.
+	(m68hc11_gdbarch_init): Don't register deleted functions with
+	gdbarch.
+
+2019-04-23  Andrew Burgess  <andrew.burgess@embecosm.com>
+
 	* m32r-tdep.c (m32r_unwind_sp): Delete.
 	(m32r_unwind_pc): Delete.
 	(m32r_dummy_id): Delete.
diff --git a/gdb/m68hc11-tdep.c b/gdb/m68hc11-tdep.c
index 4e07f90..4097eef 100644
--- a/gdb/m68hc11-tdep.c
+++ b/gdb/m68hc11-tdep.c
@@ -757,16 +757,6 @@ m68hc11_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
   return pc;
 }
 
-static CORE_ADDR
-m68hc11_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
-{
-  ULONGEST pc;
-
-  pc = frame_unwind_register_unsigned (next_frame,
-				       gdbarch_pc_regnum (gdbarch));
-  return pc;
-}
-
 /* Put here the code to store, into fi->saved_regs, the addresses of
    the saved registers of frame described by FRAME_INFO.  This
    includes special registers such as pc and fp saved in special ways
@@ -974,14 +964,6 @@ static const struct frame_base m68hc11_frame_base = {
   m68hc11_frame_args_address
 };
 
-static CORE_ADDR
-m68hc11_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
-{
-  ULONGEST sp;
-  sp = frame_unwind_register_unsigned (next_frame, HARD_SP_REGNUM);
-  return sp;
-}
-
 /* Assuming THIS_FRAME is a dummy, return the frame ID of that dummy
    frame.  The frame ID's base needs to match the TOS value saved by
    save_dummy_frame_tos(), and the PC match the dummy frame's breakpoint.  */
@@ -1487,9 +1469,6 @@ m68hc11_gdbarch_init (struct gdbarch_info info,
   /* Characters are unsigned.  */
   set_gdbarch_char_signed (gdbarch, 0);
 
-  set_gdbarch_unwind_pc (gdbarch, m68hc11_unwind_pc);
-  set_gdbarch_unwind_sp (gdbarch, m68hc11_unwind_sp);
-
   /* Set register info.  */
   set_gdbarch_fp0_regnum (gdbarch, -1);
 
@@ -1524,9 +1503,6 @@ m68hc11_gdbarch_init (struct gdbarch_info info,
      PUSH_DUMMY_CALL, and saved by generic_save_dummy_frame_tos.  */
   set_gdbarch_dummy_id (gdbarch, m68hc11_dummy_id);
 
-  /* Return the unwound PC value.  */
-  set_gdbarch_unwind_pc (gdbarch, m68hc11_unwind_pc);
-
   /* Minsymbol frobbing.  */
   set_gdbarch_elf_make_msymbol_special (gdbarch,
                                         m68hc11_elf_make_msymbol_special);