* Makefile.in (host_hook_obj): New.

	(OBJS): Add $(host_hook_obj).
	(host_default.o): New rule.
	* config.gcc (host_hook_obj): New, default to host-default.o.
	(powerpc-*-darwin*): Use host-darwin.o.
	(out_host_hook_obj): New.
	* configure: Regenerate.
	* configure.in: Print information about out_host_hook_obj, substitute
	into output files.
	* host-default.c: New file.
	* hosthooks.h: New file.
	* toplev.c (general_init): Call host_hooks.extra_signals.
	* config/rs6000/host-darwin.c: New file.
	* config/rs6000/x-darwin: New file.
	* doc/hostconfig.texi: Add documentation for new host hook.
	Rearrange existing documentation.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@62470 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 34 insertions, 0 deletions

diff --git a/gcc/hosthooks.h b/gcc/hosthooks.h
new file mode 100644
index 00000000000..92b9e5d6e32
--- /dev/null
+++ b/gcc/hosthooks.h
@@ -0,0 +1,34 @@
+/* The host_hooks data structure.
+   Copyright 2003 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+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, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#ifndef GCC_HOST_HOOKS_H
+#define GCC_HOST_HOOKS_H
+
+struct host_hooks 
+{
+  void (*extra_signals) PARAMS((void));
+
+  /* Whenever you add entries here, make sure you adjust hosthooks-def.h.  */
+};
+
+/* Each host provides its own.  */
+extern const struct host_hooks host_hooks;
+
+#endif /* GCC_LANG_HOOKS_H */