X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fmacrotab.h;h=ed863366e4cb21494297be0cacbc69a4693a45f0;hb=93692b589dc7017d5a2fbdffdfad5f84f597d8f1;hp=e929739d53b82e9229e58fb6f19b064d07cb6a79;hpb=4c38e0a4fcb69f8586d8db0b9cdb8dbab5980811;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/macrotab.h b/gdb/macrotab.h
index e929739d53..ed863366e4 100644
--- a/gdb/macrotab.h
+++ b/gdb/macrotab.h
@@ -1,5 +1,5 @@
 /* Interface to C preprocessor macro tables for GDB.
-   Copyright (C) 2002, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+   Copyright (C) 2002-2016 Free Software Foundation, Inc.
    Contributed by Red Hat, Inc.
 
    This file is part of GDB.
@@ -22,6 +22,7 @@
 
 struct obstack;
 struct bcache;
+struct compunit_symtab;
 
 /* How do we represent a source location?  I mean, how should we
    represent them within GDB; the user wants to use all sorts of
@@ -125,7 +126,9 @@ struct macro_source_file
      a part of.  */
   struct macro_table *table;
 
-  /* A source file --- possibly a header file.  */
+  /* A source file --- possibly a header file.  This filename is relative to
+     the compilation directory (table->comp_dir), it exactly matches the
+     symtab->filename content.  */
   const char *filename;
 
   /* The location we were #included from, or zero if we are the
@@ -152,7 +155,8 @@ struct macro_source_file
    xmalloc if OBSTACK is zero.  Use BCACHE to store all macro names,
    arguments, definitions, and anything else that might be the same
    amongst compilation units in an executable file; if BCACHE is zero,
-   don't cache these things.
+   don't cache these things.  CUST is a pointer to the containing
+   compilation unit, or NULL if there isn't one.
 
    Note that, if either OBSTACK or BCACHE are non-zero, then removing
    information from the table may leak memory.  Neither obstacks nor
@@ -164,7 +168,8 @@ struct macro_source_file
    the same source location (although 'gcc -DFOO -UFOO -DFOO=2' does
    do that in GCC 4.1.2.).  */
 struct macro_table *new_macro_table (struct obstack *obstack,
-                                     struct bcache *bcache);
+                                     struct bcache *bcache,
+				     struct compunit_symtab *cust);
 
 
 /* Free TABLE, and any macro definitions, source file structures,
@@ -212,6 +217,10 @@ struct macro_source_file *macro_include (struct macro_source_file *source,
                                          int line,
                                          const char *included);
 
+/* Define any special macros, like __FILE__ or __LINE__.  This should
+   be called once, on the main source file.  */
+
+void macro_define_special (struct macro_table *table);
 
 /* Find any source file structure for a file named NAME, either
    included into SOURCE, or SOURCE itself.  Return zero if we have
@@ -261,6 +270,17 @@ enum macro_kind
   macro_function_like
 };
 
+/* Different kinds of special macros.  */
+
+enum macro_special_kind
+{
+  /* Ordinary.  */
+  macro_ordinary,
+  /* The special macro __FILE__.  */
+  macro_FILE,
+  /* The special macro __LINE__.  */
+  macro_LINE
+};
 
 /* A preprocessor symbol definition.  */
 struct macro_definition
@@ -273,12 +293,17 @@ struct macro_definition
 
   /* If `kind' is `macro_function_like', the number of arguments it
      takes, and their names.  The names, and the array of pointers to
-     them, are in the table's bcache, if it has one.  */
-  int argc : 31;
+     them, are in the table's bcache, if it has one.  If `kind' is
+     `macro_object_like', then this is actually a `macro_special_kind'
+     describing the macro.  */
+  int argc : 30;
   const char * const *argv;
 
-  /* The replacement string (body) of the macro.  This is in the
-     table's bcache, if it has one.  */
+  /* The replacement string (body) of the macro.  For ordinary macros,
+     this is in the table's bcache, if it has one.  For special macros
+     like __FILE__, this value is only valid until the next use of any
+     special macro definition; that is, it is reset each time any
+     special macro is looked up or iterated over.  */
   const char *replacement;
 };
 
@@ -305,11 +330,14 @@ struct macro_source_file *(macro_definition_location
                             int *definition_line));
 
 /* Callback function when walking a macro table.  NAME is the name of
-   the macro, and DEFINITION is the definition.  USER_DATA is an
-   arbitrary pointer which is passed by the caller to macro_for_each
-   or macro_for_each_in_scope.  */
+   the macro, and DEFINITION is the definition.  SOURCE is the file at the
+   start of the include path, and LINE is the line number of the SOURCE file
+   where the macro was defined.  USER_DATA is an arbitrary pointer which is
+   passed by the caller to macro_for_each or macro_for_each_in_scope.  */
 typedef void (*macro_callback_fn) (const char *name,
 				   const struct macro_definition *definition,
+				   struct macro_source_file *source,
+				   int line,
 				   void *user_data);
 
 /* Call the function FN for each macro in the macro table TABLE.
@@ -324,5 +352,14 @@ void macro_for_each_in_scope (struct macro_source_file *file, int line,
 			      macro_callback_fn fn,
 			      void *user_data);
 
+/* Return FILE->filename with possibly prepended compilation directory name.
+   This is raw concatenation without the "set substitute-path" and gdb_realpath
+   applications done by symtab_to_fullname.  Returned string must be freed by
+   xfree.
+
+   THis function ignores the "set filename-display" setting.  Its default
+   setting is "relative" which is backward compatible but the former behavior
+   of macro filenames printing was "absolute".  */
+extern char *macro_source_fullname (struct macro_source_file *file);
 
 #endif /* MACROTAB_H */