* c-pragma.h: Define HANDLE_GENERIC_PRAGMAS if

	REGISTER_TARGET_PRAGMAS is defined.  Duplicate some
	definitions from cpplib.h.
	* cpplib.h: Don't typedef struct cpp_reader if c-pragma.h has
	already done it.
	* tm.texi: Document HANDLE_PRAGMA as no longer supported.  Add
	documentation for REGISTER_TARGET_PRAGMAS.

	* c-lex.c: Include cpplib.h before c-pragma.h.  Define a
	default-pragma callback to implement -Wunknown-pragmas if
	USE_CPPLIB.
	* c-parse.in: Move all includes to top of file.
	* c-pragma.c: Include cpplib.h before c-pragma.h.  Include
	tm_p.h.
	(dispatch_pragma): Put the namespace in the -Wunknown-pragmas
	warning.
	(init_pragma): If REGISTER_TARGET_PRAGMAS is defined, call it.

	* arm.h, arm-protos.h, arm.c,
	  c4x.h, c4x-protos.h, c4x.c,
	  h8300.h, h8300-protos.h, h8300.c,
	  i370.h, i370-protos.h, i370.c,
	  i960.h, i960-protos.h, i960.c,
	  sh.h, sh-protos.h, sh.c,
	  v850.h, v850-protos.h, v850.c: Convert HANDLE_PRAGMA-based
	pragmata scheme to use REGISTER_TARGET_PRAGMAS instead.

	* d30v.h: Don't mention HANDLE_PRAGMA in comment.  Add
	multiple include guard.
	* i370.md (untyped_call): Use GEN_CALL.
	(umodsi3): Remove unused variable.
	* sh/elf.h: Don't undef HANDLE_SYSV_PRAGMA.
	* v850.c (output_move_single, output_move_double): Constify
	return value.
	(print_operand): Constify a char *.
	* v850.h (struct small_memory_info): Constify name member.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@36249 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 24 insertions, 2 deletions

diff --git a/gcc/c-lex.c b/gcc/c-lex.c
index 84ef09499bc..63ae9ba6676 100644
--- a/gcc/c-lex.c
+++ b/gcc/c-lex.c
@@ -30,6 +30,7 @@ Boston, MA 02111-1307, USA.  */
 #include "c-tree.h"
 #include "flags.h"
 #include "timevar.h"
+#include "cpplib.h"
 #include "c-pragma.h"
 #include "toplev.h"
 #include "intl.h"
@@ -52,8 +53,6 @@ Boston, MA 02111-1307, USA.  */
 #define GET_ENVIRONMENT(ENV_VALUE,ENV_NAME) ((ENV_VALUE) = getenv (ENV_NAME))
 #endif
 
-#include "cpplib.h"
-
 #if USE_CPPLIB
 extern cpp_reader  parse_in;
 #else
@@ -162,6 +161,7 @@ static void cb_ident		PARAMS ((cpp_reader *, const unsigned char *,
 static void cb_enter_file	PARAMS ((cpp_reader *));
 static void cb_leave_file	PARAMS ((cpp_reader *));
 static void cb_rename_file	PARAMS ((cpp_reader *));
+static void cb_def_pragma	PARAMS ((cpp_reader *));
 #endif
 
 
@@ -210,6 +210,7 @@ init_c_lex (filename)
   parse_in.cb.enter_file = cb_enter_file;
   parse_in.cb.leave_file = cb_leave_file;
   parse_in.cb.rename_file = cb_rename_file;
+  parse_in.cb.def_pragma = cb_def_pragma;
 
   /* Make sure parse_in.digraphs matches flag_digraphs.  */
   CPP_OPTION (&parse_in, digraphs) = flag_digraphs;
@@ -777,6 +778,27 @@ cb_rename_file (pfile)
   /* Hook for C++.  */
   extract_interface_info ();
 }
+
+static void
+cb_def_pragma (pfile)
+     cpp_reader *pfile;
+{
+  /* Issue a warning message if we have been asked to do so.  Ignore
+     unknown pragmas in system headers unless an explicit
+     -Wunknown-pragmas has been given. */
+  if (warn_unknown_pragmas > in_system_header)
+    {
+      const unsigned char *space, *name;
+      const cpp_token *t = pfile->first_directive_token + 2;
+
+      space = t[0].val.node->name;
+      name  = t[1].type == CPP_NAME ? t[1].val.node->name : 0;
+      if (name)
+	warning ("ignoring #pragma %s %s", space, name);
+      else
+	warning ("ignoring #pragma %s", space);
+    }
+}
 #endif /* USE_CPPLIB */
 
 /* Parse a '\uNNNN' or '\UNNNNNNNN' sequence.