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[pf3gnuchains/gcc-fork.git] / gcc / c-pragma.h

diff --git a/gcc/c-pragma.h b/gcc/c-pragma.h
index 7eaacd0..685f54a 100644 (file)
--- a/gcc/c-pragma.h
+++ b/gcc/c-pragma.h
@@ -1,5 +1,5 @@
 /* Pragma related interfaces.
-   Copyright (C) 1995 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1998 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -15,34 +15,86 @@ GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with GNU CC; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#ifndef _C_PRAGMA_H
+#define _C_PRAGMA_H
 
 #ifdef HANDLE_SYSV_PRAGMA
+/* Support #pragma weak iff ASM_WEAKEN_LABEL and ASM_OUTPUT_DEF are
+   defined.  */
+#if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF)
+#define HANDLE_PRAGMA_WEAK SUPPORTS_WEAK
+#endif
+
+/* We always support #pragma pack for SYSV pragmas.  */
+#ifndef HANDLE_PRAGMA_PACK
+#define HANDLE_PRAGMA_PACK 1
+#endif
+#endif /* HANDLE_SYSV_PRAGMA */
+
+
+#ifdef HANDLE_PRAGMA_PACK_PUSH_POP
+/* If we are supporting #pragma pack(push... then we automatically
+   support #pragma pack(<n>)  */
+#define HANDLE_PRAGMA_PACK 1
+#define PRAGMA_INSERT_ATTRIBUTES(node, pattr, prefix_attr) \
+  insert_pack_attributes (node, pattr, prefix_attr)
+extern void insert_pack_attributes PROTO((tree, tree *, tree *));
+#endif /* HANDLE_PRAGMA_PACK_PUSH_POP */
+
+
+#ifdef HANDLE_PRAGMA_WEAK
+/* This structure contains any weak symbol declarations waiting to be emitted.  */
+struct weak_syms
+{
+  struct weak_syms * next;
+  char * name;
+  char * value;
+};
+
+/* Declared in varasm.c */
+extern struct weak_syms * weak_decls;
+#endif /* HANDLE_PRAGMA_WEAK */
+
 
-/* Support #pragma weak by default if WEAK_ASM_OP and ASM_OUTPUT_DEF
-   are defined.  */
-#if !defined (HANDLE_PRAGMA_WEAK) && defined (WEAK_ASM_OP) && defined (ASM_OUTPUT_DEF)
-#define HANDLE_PRAGMA_WEAK 1
+#if defined HANDLE_PRAGMA_PACK || defined HANDLE_PRAGMA_WEAK
+/* Define HANDLE_GENERIC_PRAGMAS if any kind of front-end pragma
+   parsing is to be done.  The code in GCC's generic C source files
+   will only look for the definition of this constant.  They will
+   ignore definitions of HANDLE_PRAGMA_PACK and so on.  */
+#define HANDLE_GENERIC_PRAGMAS 1
 #endif
 
+
+#ifdef HANDLE_GENERIC_PRAGMAS
 enum pragma_state
 {
   ps_start,
   ps_done,
-  ps_bad,
+#ifdef HANDLE_PRAGMA_WEAK
   ps_weak,
   ps_name,
   ps_equals,
   ps_value,
+#endif
+#ifdef HANDLE_PRAGMA_PACK
   ps_pack,
   ps_left,
   ps_align,
-  ps_right
+  ps_right,
+#endif
+#ifdef HANDLE_PRAGMA_PACK_PUSH_POP
+  ps_push,
+  ps_pop,
+  ps_comma,
+#endif
+  ps_bad
 };
 
-/* Output asm to handle ``#pragma weak'' */
-extern void handle_pragma_weak PROTO((enum pragma_state, char *, char *));
-
 /* Handle a C style pragma */
-extern void handle_pragma_token PROTO((char *, tree));
-#endif /* HANDLE_SYSV_PRAGMA */
+extern int handle_pragma_token PROTO((char *, tree));
+
+#endif /* HANDLE_GENERIC_PRAGMAS */
+#endif /* _C_PRAGMA_H */