[PATCH 5/9] Change spu-tdep.c to use type-safe registry

[Tom Tromey]

This changes spu-tdep.c to use the type-safe registry.

gdb/ChangeLog
2019-07-10  Tom Tromey  <tromey@adacore.com>

	* spu-tdep.c (spu_overlay_data): Change type.
	(spu_get_overlay_table, spu_overlay_new_objfile)
	(_initialize_spu_tdep): Update.
---
 gdb/ChangeLog  |  6 ++++++
 gdb/spu-tdep.c | 12 ++++++------
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/gdb/spu-tdep.c b/gdb/spu-tdep.c
index a2ac3149d4d..69ffb69fcb9 100644
--- a/gdb/spu-tdep.c
+++ b/gdb/spu-tdep.c
@@ -1767,14 +1767,15 @@ gdb_print_insn_spu (bfd_vma memaddr, struct disassemble_info *info)
    a target address.  The overlay section is mapped iff the target
    integer at this location equals MAPPED_VAL.  */
 
-static const struct objfile_data *spu_overlay_data;
-
 struct spu_overlay_table
   {
     CORE_ADDR mapped_ptr;
     CORE_ADDR mapped_val;
   };
 
+static objfile_key<spu_overlay_table,
+		   gdb::noop_deleter<spu_overlay_table>> spu_overlay_data;
+
 /* Retrieve the overlay table for OBJFILE.  If not already cached, read
    the _ovly_table data structure from the target and initialize the
    spu_overlay_table data structure from it.  */
@@ -1791,7 +1792,7 @@ spu_get_overlay_table (struct objfile *objfile)
   gdb_byte *ovly_table;
   int i;
 
-  tbl = (struct spu_overlay_table *) objfile_data (objfile, spu_overlay_data);
+  tbl = spu_overlay_data.get (objfile);
   if (tbl)
     return tbl;
 
@@ -1843,7 +1844,7 @@ spu_get_overlay_table (struct objfile *objfile)
     }
 
   xfree (ovly_table);
-  set_objfile_data (objfile, spu_overlay_data, tbl);
+  spu_overlay_data.set (objfile, tbl);
   return tbl;
 }
 
@@ -1901,7 +1902,7 @@ spu_overlay_new_objfile (struct objfile *objfile)
   struct obj_section *osect;
 
   /* If we've already touched this file, do nothing.  */
-  if (!objfile || objfile_data (objfile, spu_overlay_data) != NULL)
+  if (!objfile || spu_overlay_data.get (objfile) != NULL)
     return;
 
   /* Consider only SPU objfiles.  */
@@ -2765,7 +2766,6 @@ _initialize_spu_tdep (void)
 
   /* Add ourselves to objfile event chain.  */
   gdb::observers::new_objfile.attach (spu_overlay_new_objfile);
-  spu_overlay_data = register_objfile_data ();
 
   /* Install spu stop-on-load handler.  */
   gdb::observers::new_objfile.attach (spu_catch_start);
-- 
2.20.1