* config/rs6000/rs6000.c (spe_init_builtins,

[pf3gnuchains/gcc-fork.git] / gcc / cpphash.h

diff --git a/gcc/cpphash.h b/gcc/cpphash.h
index 24b5ef7..5e69c85 100644 (file)
--- a/gcc/cpphash.h
+++ b/gcc/cpphash.h
@@ -98,8 +98,15 @@ struct cpp_macro
 
   /* If macro defined in system header.  */
   unsigned int syshdr   : 1;
+
+  /* Non-zero if it has been expanded or had its existence tested.  */
+  unsigned int used     : 1;
 };
 
+#define _cpp_mark_macro_used(NODE) do {                                        \
+  if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN))     \
+    (NODE)->value.macro->used = 1; } while (0)
+
 /* A generic memory buffer, and operations on it.  */
 typedef struct _cpp_buff _cpp_buff;
 struct _cpp_buff
@@ -211,6 +218,9 @@ struct lexer_state
   /* Nonzero if in a directive that takes angle-bracketed headers.  */
   unsigned char angled_headers;
 
+  /* Nonzero if in a #if or #elif directive.  */
+  unsigned char in_expression;
+
   /* Nonzero to save comments.  Turned off if discard_comments, and in
      all directives apart from #define.  */
   unsigned char save_comments;
@@ -298,7 +308,7 @@ struct cpp_buffer
   struct search_path dir;
 
   /* Used for buffer overlays by cpptrad.c.  */
-  const uchar *saved_cur, *saved_rlimit, *saved_line_base;
+  const uchar *saved_cur, *saved_rlimit;
 };
 
 /* A cpp_reader encapsulates the "state" of a pre-processor run.
@@ -309,6 +319,9 @@ struct cpp_reader
   /* Top of buffer stack.  */
   cpp_buffer *buffer;
 
+  /* Overlaid buffer (can be different after processing #include).  */
+  cpp_buffer *overlaid_buffer;
+
   /* Lexer state.  */
   struct lexer_state state;
 
@@ -364,9 +377,12 @@ struct cpp_reader
      for include files.  (Altered as we get more of them.)  */
   unsigned int max_include_len;
 
-  /* Date and time tokens.  Calculated together if either is requested.  */
-  cpp_token date;
-  cpp_token time;
+  /* Macros on or after this line are warned about if unused.  */
+  unsigned int first_unused_line;
+
+  /* Date and time text.  Calculated together if either is requested.  */
+  const uchar *date;
+  const uchar *time;
 
   /* EOF token, and a token forcing paste avoidance.  */
   cpp_token avoid_paste;
@@ -469,7 +485,10 @@ extern bool _cpp_save_parameter            PARAMS ((cpp_reader *, cpp_macro *,
 extern bool _cpp_arguments_ok          PARAMS ((cpp_reader *, cpp_macro *,
                                                 const cpp_hashnode *,
                                                 unsigned int));
-
+extern const uchar *_cpp_builtin_macro_text PARAMS ((cpp_reader *,
+                                                    cpp_hashnode *));
+int _cpp_warn_if_unused_macro          PARAMS ((cpp_reader *, cpp_hashnode *,
+                                                void *));
 /* In cpphash.c */
 extern void _cpp_init_hashtable                PARAMS ((cpp_reader *, hash_table *));
 extern void _cpp_destroy_hashtable     PARAMS ((cpp_reader *));
@@ -522,10 +541,11 @@ extern bool _cpp_read_logical_line_trad PARAMS ((cpp_reader *));
 extern void _cpp_overlay_buffer PARAMS ((cpp_reader *pfile, const uchar *,
                                         size_t));
 extern void _cpp_remove_overlay PARAMS ((cpp_reader *));
-extern void _cpp_set_trad_context PARAMS ((cpp_reader *));
 extern bool _cpp_create_trad_definition PARAMS ((cpp_reader *, cpp_macro *));
 extern bool _cpp_expansions_different_trad PARAMS ((const cpp_macro *,
                                                    const cpp_macro *));
+extern uchar *_cpp_copy_replacement_text PARAMS ((const cpp_macro *, uchar *));
+extern size_t _cpp_replacement_text_len PARAMS ((const cpp_macro *));
 
 /* Utility routines and macros.  */
 #define DSC(str) (const uchar *)str, sizeof str - 1