gdb/msp430: Use default gdbarch methods where possible

Make use of the default gdbarch methods for gdbarch_dummy_id,
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:

	* msp430-tdep.c (msp430_unwind_pc): Delete.
	(msp430_unwind_sp): Delete.
	(msp430_dummy_id): Delete.
	(msp430_gdbarch_init): Don't register deleted functions with
	gdbarch.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index c25fe59..c4ffa87 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,13 @@
 2019-04-23  Andrew Burgess  <andrew.burgess@embecosm.com>
 
+       * msp430-tdep.c (msp430_unwind_pc): Delete.
+       (msp430_unwind_sp): Delete.
+       (msp430_dummy_id): Delete.
+       (msp430_gdbarch_init): Don't register deleted functions with
+       gdbarch.
+
+2019-04-23  Andrew Burgess  <andrew.burgess@embecosm.com>
+
        * moxie-tdep.c (moxie_unwind_sp): Delete.
        (moxie_unwind_pc): Delete.
        (moxie_dummy_id): Delete.

diff --git a/gdb/msp430-tdep.c b/gdb/msp430-tdep.c
index b5c983d..0e55eab 100644 (file)
--- a/gdb/msp430-tdep.c
+++ b/gdb/msp430-tdep.c
@@ -447,22 +447,6 @@ msp430_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
   return p.prologue_end;
 }
 
-/* Implement the "unwind_pc" gdbarch method.  */
-
-static CORE_ADDR
-msp430_unwind_pc (struct gdbarch *arch, struct frame_info *next_frame)
-{
-  return frame_unwind_register_unsigned (next_frame, MSP430_PC_REGNUM);
-}
-
-/* Implement the "unwind_sp" gdbarch method.  */
-
-static CORE_ADDR
-msp430_unwind_sp (struct gdbarch *arch, struct frame_info *next_frame)
-{
-  return frame_unwind_register_unsigned (next_frame, MSP430_SP_REGNUM);
-}
-
 /* Given a frame described by THIS_FRAME, decode the prologue of its
    associated function if there is not cache entry as specified by
    THIS_PROLOGUE_CACHE.  Save the decoded prologue in the cache and
@@ -650,19 +634,6 @@ msp430_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp)
   return align_down (sp, 2);
 }
 
-
-/* Implement the "dummy_id" gdbarch method.  */
-
-static struct frame_id
-msp430_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
-{
-  return
-    frame_id_build (get_frame_register_unsigned
-                   (this_frame, MSP430_SP_REGNUM),
-                   get_frame_pc (this_frame));
-}
-
-
 /* Implement the "push_dummy_call" gdbarch method.  */
 
 static CORE_ADDR
@@ -995,14 +966,11 @@ msp430_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   /* Frames, prologues, etc.  */
   set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
   set_gdbarch_skip_prologue (gdbarch, msp430_skip_prologue);
-  set_gdbarch_unwind_pc (gdbarch, msp430_unwind_pc);
-  set_gdbarch_unwind_sp (gdbarch, msp430_unwind_sp);
   set_gdbarch_frame_align (gdbarch, msp430_frame_align);
   dwarf2_append_unwinders (gdbarch);
   frame_unwind_append_unwinder (gdbarch, &msp430_unwind);
 
   /* Dummy frames, return values.  */
-  set_gdbarch_dummy_id (gdbarch, msp430_dummy_id);
   set_gdbarch_push_dummy_call (gdbarch, msp430_push_dummy_call);
   set_gdbarch_return_value (gdbarch, msp430_return_value);