/* Definitions for dealing with stack frames, for GDB, the GNU debugger.
- Copyright (C) 1986 Free Software Foundation, Inc.
+ Copyright (C) 1986, 1989 Free Software Foundation, Inc.
-GDB is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY. No author or distributor accepts responsibility to anyone
-for the consequences of using it or for whether it serves any
-particular purpose or works at all, unless he says so in writing.
-Refer to the GDB General Public License for full details.
+This file is part of GDB.
-Everyone is granted permission to copy, modify and redistribute GDB,
-but only under the conditions described in the GDB General Public
-License. A copy of this license is supposed to have been given to you
-along with GDB so you can know your rights and responsibilities. It
-should be in a file named COPYING. Among other things, the copyright
-notice and this notice must be preserved on all copies.
+GDB 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 1, or (at your option)
+any later version.
-In other words, go ahead and share GDB, but don't try to stop
-anyone else from sharing it farther. Help stamp out software hoarding!
-*/
+GDB 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.
-/* Note that frame.h requires param.h! */
+You should have received a copy of the GNU General Public License
+along with GDB; see the file COPYING. If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-#define FRAME CORE_ADDR
+#if !defined (FRAME_H)
+#define FRAME_H 1
+#include "param.h"
+/*
+ * FRAME is the type of the identifier of a specific stack frame. It
+ * is a pointer to the frame cache item corresponding to this frame.
+ * Please note that frame id's are *not* constant over calls to the
+ * inferior. Use frame addresses, which are.
+ *
+ * FRAME_ADDR is the type of the address of a specific frame. I
+ * cannot imagine a case in which this would not be CORE_ADDR, so
+ * maybe it's silly to give it it's own type. Life's rough.
+ *
+ * FRAME_FP is a macro which converts from a frame identifier into a
+ * frame_address.
+ *
+ * FRAME_INFO_ID is a macro which "converts" from a frame info pointer
+ * to a frame id. This is here in case I or someone else decides to
+ * change the FRAME type again.
+ *
+ * This file and blockframe.c are the only places which are allowed to
+ * use the equivalence between FRAME and struct frame_info *. EXCEPTION:
+ * value.h uses CORE_ADDR instead of FRAME_ADDR because the compiler
+ * will accept that in the absense of this file.
+ */
+typedef struct frame_info *FRAME;
+typedef CORE_ADDR FRAME_ADDR;
+#define FRAME_FP(fr) ((fr)->frame)
+#define FRAME_INFO_ID(f) (f)
+
+/*
+ * Caching structure for stack frames. This is also the structure
+ * used for extended info about stack frames. May add more to this
+ * structure as it becomes necessary.
+ *
+ * Note that the first entry in the cache will always refer to the
+ * innermost executing frame. This value should be set (is it?
+ * Check) in something like normal_stop.
+ */
struct frame_info
{
/* Nominal address of the frame described. */
- FRAME frame;
+ FRAME_ADDR frame;
/* Address at which execution is occurring in this frame.
For the innermost frame, it's the current pc.
For other frames, it is a pc saved in the next frame. */
CORE_ADDR pc;
- /* The frame called by the frame we are describing, or 0. */
- FRAME next_frame;
+ /* The frame called by the frame we are describing, or 0.
+ This may be set even if there isn't a frame called by the one
+ we are describing (.->next == 0); in that case it is simply the
+ bottom of this frame */
+ FRAME_ADDR next_frame;
+ /* Anything extra for this structure that may have been defined
+ in the machine depedent files. */
+#ifdef EXTRA_FRAME_INFO
+ EXTRA_FRAME_INFO
+#endif
+ /* Pointers to the next and previous frame_info's in this stack. */
+ FRAME next, prev;
};
/* Describe the saved registers of a frame. */
extern FRAME selected_frame;
-extern struct frame_info get_frame_info ();
-extern struct frame_info get_prev_frame_info ();
+extern struct frame_info *get_frame_info ();
+extern struct frame_info *get_prev_frame_info ();
+
+extern FRAME create_new_frame ();
+extern void flush_cached_frames ();
extern void get_frame_saved_regs ();
+extern void set_current_frame ();
extern FRAME get_prev_frame ();
-
extern FRAME get_current_frame ();
+extern FRAME get_next_frame ();
extern struct block *get_frame_block ();
extern struct block *get_current_block ();
extern struct block *get_selected_block ();
extern struct symbol *get_frame_function ();
-extern struct symbol *get_pc_function ();
+extern CORE_ADDR get_frame_pc ();
+extern CORE_ADDR get_pc_function_start ();
+struct block *block_for_pc ();
+
+int frameless_look_for_prologue ();
+
+void print_frame_args ();
+
+/* In stack.c */
+extern FRAME find_relative_frame ();
+extern void print_selected_frame ();
+extern void print_sel_frame ();
+extern void select_frame ();
+extern void record_selected_frame ();
+
+#endif /* frame.h not already included. */
projects / deliverable / binutils-gdb.git / blobdiff