* Check in Fred Fish's changes in these modules. Fred

will make ChangeLog entries for all of them.

1 files changed, 85 insertions, 0 deletions

diff --git a/gdb/state.h b/gdb/state.h
new file mode 100644
index 0000000..9a8f972
--- /dev/null
+++ b/gdb/state.h
@@ -0,0 +1,85 @@
+/* Support for dumping and reloading various pieces of GDB's internal state.
+   Copyright 1992 Free Software Foundation, Inc.
+   Contributed by Cygnus Support, using pieces from other GDB modules.
+
+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
+(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, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* This file provides definitions used for reading and writing gdb
+   state files.  State files have a fairly simple form which is intended
+   to be easily extensible.  See state.c for further documentation. */
+
+#if !defined (_STATE_H)
+#define _STATE_H
+
+/* State file-header */
+
+typedef struct {
+  unsigned char sf_mag0;	/* Magic number byte 0 */
+  unsigned char sf_mag1;	/* Magic number byte 1 */
+  unsigned char sf_mag2;	/* Magic number byte 2 */
+  unsigned char sf_mag3;	/* Magic number byte 3 */
+  unsigned long sf_ftoff;	/* File offset to start of form-tree */
+  unsigned long sf_ftsize;	/* Size of the form-tree, in bytes */
+} sf_hdr;
+
+  
+#define SF_MAG0	'g'		/* Magic number byte 0 value */
+#define SF_MAG1	'd'		/* Magic number byte 1 value */
+#define SF_MAG2	'b'		/* Magic number byte 2 value */
+#define SF_MAG3	'\000'		/* Magic number byte 3 value */
+
+#define SF_GOOD_MAGIC(asfd) ((asfd) -> hdr.sf_mag0 == SF_MAG0 && \
+			     (asfd) -> hdr.sf_mag1 == SF_MAG1 && \
+			     (asfd) -> hdr.sf_mag2 == SF_MAG2 && \
+			     (asfd) -> hdr.sf_mag3 == SF_MAG3)
+
+/* The internal form-tree is formed from nodes that contain pointers
+   to the first sibling, the first child, a backpointer to the parent,
+   and a pointer to the actual data for the node.  This allows all
+   tree nodes to have the same sized structure, but support variable
+   numbers of child nodes per parent node.  The backpointer for the
+   parent is required for simplier tree walks. */
+
+struct formnode
+{
+  struct formnode *sibling;	/* Pointer to first sibling */
+  struct formnode *child;	/* Pointer to first child */
+  struct formnode *parent;	/* Backpointer to parent */
+  char *nodedata;		/* Pointer to the nodes data */
+  unsigned long treesize;	/* Size of subtree rooted here */
+};
+
+/* A state file descriptor is defined by the following structure. */
+
+typedef struct
+{
+  char *filename;		/* Full pathname of the state file */
+  FILE *fp;			/* Open file pointer for the state file */
+  sf_hdr hdr;			/* Copy of the state file-header */
+  char *formtree;		/* Pointer to in-memory copy of form-tree */
+} sfd;
+
+extern sfd *
+sfd_fopen PARAMS ((char *, char *));
+
+extern void
+sfd_fclose PARAMS ((sfd *));
+
+extern struct objfile *
+objfile_from_statefile PARAMS ((sfd *));
+
+#endif	/* !defined (_STATE_H) */