gdb: Remove casts of NULL during assignment.

[deliverable/binutils-gdb.git] / gdb / sentinel-frame.c

diff --git a/gdb/sentinel-frame.c b/gdb/sentinel-frame.c
index 6c2f3e079d11f8467948b97da686a1dc8f409daf..1bb62f44bca229fbde68b763fb69921ce87cae2f 100644 (file)
--- a/gdb/sentinel-frame.c
+++ b/gdb/sentinel-frame.c
@@ -1,8 +1,6 @@
 /* Code dealing with register stack frames, for GDB, the GNU debugger.
 
-   Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
-   1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007, 2008, 2009, 2010, 2011
-   Free Software Foundation, Inc.
+   Copyright (C) 1986-2015 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -48,25 +46,12 @@ sentinel_frame_prev_register (struct frame_info *this_frame,
                              void **this_prologue_cache,
                              int regnum)
 {
-  struct gdbarch *gdbarch = get_frame_arch (this_frame);
   struct frame_unwind_cache *cache = *this_prologue_cache;
   struct value *value;
-  struct type *regtype = register_type (gdbarch, regnum);
 
-  /* Return the actual value.  */
-  value = allocate_value (regtype);
-  VALUE_LVAL (value) = lval_register;
-  VALUE_REGNUM (value) = regnum;
+  value = regcache_cooked_read_value (cache->regcache, regnum);
   VALUE_FRAME_ID (value) = get_frame_id (this_frame);
 
-  /* Use the regcache_cooked_read() method so that it, on the fly,
-     constructs either a raw or pseudo register from the raw
-     register cache.  */
-  if (regcache_cooked_read (cache->regcache,
-                           regnum,
-                           value_contents_raw (value)) == REG_UNAVAILABLE)
-    mark_value_bytes_unavailable (value, 0, TYPE_LENGTH (regtype));
-
   return value;
 }