gdb

	PR gdb/855:
	* NEWS: Add entry for macro commands.
	* Makefile.in (macrocmd.o): Add gdb_string.h.
	* macroscope.h (user_macro_scope): Declare.
	(default_macro_scope): Update documentation.
	(macro_user_macros): Declare.
	* c-lang.c (c_preprocess_and_parse): Always attempt macro lookup.
	Use user_macro_scope.
	(null_macro_lookup): Remove.
	* macrotab.h (macro_callback_fn): Declare.
	(macro_for_each): Likewise.
	(macro_allow_redefinitions): Likewise.
	* macrotab.c (foreach_macro): New function
	(macro_for_each): Likewise.
	(struct macro_table) <redef_ok>: New field.
	(macro_allow_redefinitions): New function.
	(new_macro_table): Update.
	(macro_define_function): Likewise.
	(macro_define_object): Likewise.
	* macroscope.c (user_macro_scope): New function.
	(default_macro_scope): Use it.
	(macro_user_macros): New global.
	(standard_macro_lookup): Look in macro_user_macros.
	(_initialize_macroscope): New function.
	* macroexp.h (macro_is_whitespace, macro_is_digit,
	macro_is_identifier_nondigit): Declare.
	* macroexp.c (macro_is_whitespace): Rename.  No longer static.
	(macro_is_digit): Likewise.
	(macro_is_identifier_nondigit): Likewise.
	(get_identifier): Update.
	(get_pp_number): Likewise.
	(get_token): Likewise.
	* macrocmd.c (skip_ws): New function.
	(extract_identifier): Likewise.
	(free_macro_definition_ptr): Likewise.
	(user_macros): Remove.
	(macro_define_command): Implement.
	(_initialize_macrocmd): Update.
	(macro_undef_command): Implement.
	(print_one_macro): New function.
	(macro_list_command): Implement.
gdb/doc
	* gdb.texinfo (Macros): Update.  Use @code rather than @command.
gdb/testsuite
	* gdb.base/macscp.exp: Add macro tests.

1 files changed, 10 insertions, 1 deletions

diff --git a/gdb/macroscope.h b/gdb/macroscope.h
index 4c288b5..d81a760 100644
--- a/gdb/macroscope.h
+++ b/gdb/macroscope.h
@@ -24,6 +24,9 @@
 #include "symtab.h"
 
 
+/* The table of macros defined by the user.  */
+extern struct macro_table *macro_user_macros;
+
 /* 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.  */
@@ -39,12 +42,18 @@ struct macro_scope {
 struct macro_scope *sal_macro_scope (struct symtab_and_line sal);
 
 
+/* Return a `struct macro_scope' object representing just the
+   user-defined macros.  The result is allocated using xmalloc; the
+   caller is responsible for freeing it.  */
+struct macro_scope *user_macro_scope (void);
+
 /* 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.
+   If we have no macro information for the current location, return
+   the user macro scope.
 
    The object returned is allocated using xmalloc; the caller is
    responsible for freeing it.  */