Add commands for manually expanding macros and showing their

definitions.
* macrocmd.c, macroscope.c, macroscope.h: New files.
* Makefile.in (SFILES): Add macrocmd.c, macroscope.c.
(macroscope_h): New variable.
(HFILES_NO_SRCDIR): Add macroscope.h.
(COMMON_OBS): Add macrocmd.o, macroscope.o.
(macroscope.o, macrocmd.o): New rules.

1 files changed, 63 insertions, 0 deletions

diff --git a/gdb/macroscope.h b/gdb/macroscope.h
new file mode 100644
index 0000000..fc10b6d
--- /dev/null
+++ b/gdb/macroscope.h
@@ -0,0 +1,63 @@
+/* Interface to functions for deciding which macros are currently in scope.
+   Copyright 2002 Free Software Foundation, Inc.
+   Contributed by Red Hat, 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
+   (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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef MACROSCOPE_H
+#define MACROSCOPE_H
+
+#include "macrotab.h"
+#include "symtab.h"
+
+
+/* All the information we need to decide which macro definitions are
+   in scope: a source file (either a main source file or an
+   #inclusion), and a line number in that file.  */
+struct macro_scope {
+  struct macro_source_file *file;
+  int line;
+};
+
+
+/* Return a `struct macro_scope' object corresponding to the symtab
+   and line given in SAL.  If we have no macro information for that
+   location, or if SAL's pc is zero, return zero.  */
+struct macro_scope *sal_macro_scope (struct symtab_and_line sal);
+
+
+/* Return a `struct macro_scope' object describing the scope the `macro
+   expand' and `macro expand-once' commands should use for looking up
+   macros.  If we have a selected frame, this is the source location of
+   its PC; otherwise, this is the last listing position.
+
+   If we have no macro information for the current location, return zero.
+
+   The object returned is allocated using xmalloc; the caller is
+   responsible for freeing it.  */
+struct macro_scope *default_macro_scope (void);
+
+
+/* Look up the definition of the macro named NAME in scope at the source
+   location given by BATON, which must be a pointer to a `struct
+   macro_scope' structure.  This function is suitable for use as
+   a macro_lookup_ftype function.  */
+struct macro_definition *standard_macro_lookup (const char *name, void *baton);
+
+
+#endif /* MACROSCOPE_H */