X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fsentinel-frame.c;h=d20c42666c34782fd514cb424f50b344be8df3f8;hb=2bd7c093f663139ad9e57ddc748ade12f6bfbe01;hp=fe11d8a6f43ac10c5f48001616b889ba9b507e79;hpb=a94dd1fda23661238cac626d1adc7a11c55364b3;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/sentinel-frame.c b/gdb/sentinel-frame.c
index fe11d8a6f4..d20c42666c 100644
--- a/gdb/sentinel-frame.c
+++ b/gdb/sentinel-frame.c
@@ -1,14 +1,14 @@
 /* Code dealing with register stack frames, for GDB, the GNU debugger.
 
-   Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
-   1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
-   Foundation, Inc.
+   Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+   1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007, 2008, 2009
+   Free Software Foundation, Inc.
 
    This file is part of GDB.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -17,9 +17,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 
 #include "defs.h"
@@ -44,70 +42,45 @@ sentinel_frame_cache (struct regcache *regcache)
 
 /* Here the register value is taken direct from the register cache.  */
 
-void
-sentinel_frame_register_unwind (struct frame_info *frame,
-				void **unwind_cache,
-				int regnum, int *optimized,
-				enum lval_type *lvalp, CORE_ADDR *addrp,
-				int *realnum, void *bufferp)
+static struct value *
+sentinel_frame_prev_register (struct frame_info *this_frame,
+			      void **this_prologue_cache,
+			      int regnum)
 {
-  struct frame_unwind_cache *cache = *unwind_cache;
-  /* Describe the register's location.  A reg-frame maps all registers
-     onto the corresponding hardware register.  */
-  *optimized = 0;
-  *lvalp = lval_register;
-  *addrp = REGISTER_BYTE (regnum);
-  *realnum = regnum;
-
-  /* If needed, find and return the value of the register.  */
-  if (bufferp != NULL)
-    {
-      /* Return the actual value.  */
-      /* Use the regcache_cooked_read() method so that it, on the fly,
-         constructs either a raw or pseudo register from the raw
-         register cache.  */
-      regcache_cooked_read (cache->regcache, regnum, bufferp);
-    }
-}
-
-CORE_ADDR
-sentinel_frame_pc_unwind (struct frame_info *frame,
-			  void **cache)
-{
-  /* FIXME: cagney/2003-01-08: This should be using a per-architecture
-     method that doesn't suffer from DECR_PC_AFTER_BREAK problems.
-     Such a method would take unwind_cache, regcache and stop reason
-     parameters.  */
-  return read_pc ();
-}
-
-void
-sentinel_frame_id_unwind (struct frame_info *frame,
-			  void **cache,
-			  struct frame_id *id)
-{
-  /* FIXME: cagney/2003-01-08: This should be using a per-architecture
-     method that doesn't suffer from DECR_PC_AFTER_BREAK problems.
-     Such a method would take unwind_cache, regcache and stop reason
-     parameters.  */
-  id->base = read_fp ();
-  id->pc = read_pc ();
+  struct gdbarch *gdbarch = get_frame_arch (this_frame);
+  struct frame_unwind_cache *cache = *this_prologue_cache;
+  struct value *value;
+
+  /* Return the actual value.  */
+  value = allocate_value (register_type (gdbarch, regnum));
+  VALUE_LVAL (value) = lval_register;
+  VALUE_REGNUM (value) = 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.  */
+  regcache_cooked_read (cache->regcache, regnum, value_contents_raw (value));
+
+  return value;
 }
 
 static void
-sentinel_frame_pop (struct frame_info *frame,
-		    void **cache,
-		    struct regcache *regcache)
+sentinel_frame_this_id (struct frame_info *this_frame,
+			void **this_prologue_cache,
+			struct frame_id *this_id)
 {
-  internal_error (__FILE__, __LINE__, "Function sentinal_frame_pop called");
+  /* The sentinel frame is used as a starting point for creating the
+     previous (inner most) frame.  That frame's THIS_ID method will be
+     called to determine the inner most frame's ID.  Not this one.  */
+  internal_error (__FILE__, __LINE__, _("sentinel_frame_this_id called"));
 }
 
 const struct frame_unwind sentinel_frame_unwinder =
 {
-  sentinel_frame_pop,
-  sentinel_frame_pc_unwind,
-  sentinel_frame_id_unwind,
-  sentinel_frame_register_unwind
+  SENTINEL_FRAME,
+  sentinel_frame_this_id,
+  sentinel_frame_prev_register
 };
 
 const struct frame_unwind *const sentinel_frame_unwind = &sentinel_frame_unwinder;