gdb: move frame_info_ptr method implementations to frame-info.c

I don't see any particular reason why the implementations of the
frame_info_ptr object are in the header file.  It only seems to add some
complexity.  Since we can't include frame.h in frame-info.h, we have to
add declarations of functions defined in frame.c, in frame-info.h.  By
moving the implementations to a new frame-info.c, we can avoid that.

Change-Id: I435c828f81b8a3392c43ef018af31effddf6be9c
Reviewed-By: Bruno Larsen <blarsen@redhat.com>
Reviewed-By: Tom Tromey <tom@tromey.com>

gdb/Makefile.in

@@ -1088,6 +1088,7 @@ COMMON_SFILES = \
 	findvar.c \
 	frame.c \
 	frame-base.c \
+	frame-info.c \
 	frame-unwind.c \
 	gcore.c \
 	gdb-demangle.c \

gdb/frame-info.c

@@ -0,0 +1,47 @@
+/* Frame info pointer
+
+   Copyright (C) 2022 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 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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, see <http://www.gnu.org/licenses/>.  */
+
+#include "defs.h"
+
+#include "frame-info.h"
+#include "frame.h"
+
+/* See frame-info-ptr.h.  */
+
+intrusive_list<frame_info_ptr> frame_info_ptr::frame_list;
+
+/* See frame-info-ptr.h.  */
+
+void
+frame_info_ptr::prepare_reinflate ()
+{
+  m_cached_id = get_frame_id (*this);
+}
+
+/* See frame-info-ptr.h.  */
+
+void
+frame_info_ptr::reinflate ()
+{
+  gdb_assert (m_cached_id != null_frame_id);
+
+  if (m_ptr == nullptr)
+    m_ptr = frame_find_by_id (m_cached_id).get ();
+  gdb_assert (m_ptr != nullptr);
+}

gdb/frame-info.h

@@ -25,12 +25,6 @@
 
 struct frame_info;
 
-/* Forward declarations of functions, needed for the frame_info_ptr
-   to work correctly.  */
-extern void reinit_frame_cache ();
-extern struct frame_id get_frame_id (frame_info_ptr);
-extern frame_info_ptr frame_find_by_id (struct frame_id id);
-
 /* A wrapper for "frame_info *".  frame_info objects are invalidated
    whenever reinit_frame_cache is called.  This class arranges to
    invalidate the pointer when appropriate.  This is done to help
@@ -136,20 +130,10 @@ class frame_info_ptr : public intrusive_list_node<frame_info_ptr>
   }
 
   /* Cache the frame_id that the pointer will use to reinflate.  */
-  void prepare_reinflate ()
-  {
-    m_cached_id = get_frame_id (*this);
-  }
+  void prepare_reinflate ();
 
   /* Use the cached frame_id to reinflate the pointer.  */
-  void reinflate ()
-  {
-    gdb_assert (m_cached_id != null_frame_id);
-
-    if (m_ptr == nullptr)
-      m_ptr = frame_find_by_id (m_cached_id).get ();
-    gdb_assert (m_ptr != nullptr);
-  }
+  void reinflate ();
 
 private:
 

gdb/frame.c

@@ -19,6 +19,7 @@
 
 #include "defs.h"
 #include "frame.h"
+#include "frame-info.h"
 #include "target.h"
 #include "value.h"
 #include "inferior.h"	/* for inferior_ptid */
@@ -56,9 +57,6 @@ static frame_info *sentinel_frame;
 /* Number of calls to reinit_frame_cache.  */
 static unsigned int frame_cache_generation = 0;
 
-/* See frame-info.h.  */
-intrusive_list<frame_info_ptr> frame_info_ptr::frame_list;
-
 /* See frame.h.  */
 
 unsigned int

gdb/frame.h

@@ -280,6 +280,10 @@ extern frame_info_ptr get_next_frame_sentinel_okay (frame_info_ptr);
    frame.  */
 extern frame_info_ptr get_prev_frame_always (frame_info_ptr);
 
+/* Given a frame's ID, relocate the frame.  Returns NULL if the frame
+   is not found.  */
+extern frame_info_ptr frame_find_by_id (frame_id id);
+
 /* Base attributes of a frame: */
 
 /* The frame's `resume' address.  Where the program will resume in