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diff --git a/gcc/targhooks.h b/gcc/targhooks.h
new file mode 100644
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--- /dev/null
+++ b/gcc/targhooks.h
@@ -0,0 +1,106 @@
+/* Default target hook functions.
+   Copyright (C) 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC 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 3, or (at your option) any later
+version.
+
+GCC 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 GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+extern void default_external_libcall (rtx);
+
+extern int default_unspec_may_trap_p (const_rtx, unsigned);
+
+extern enum machine_mode default_cc_modes_compatible (enum machine_mode,
+						      enum machine_mode);
+
+extern bool default_return_in_memory (const_tree, const_tree);
+
+extern rtx default_expand_builtin_saveregs (void);
+extern void default_setup_incoming_varargs (CUMULATIVE_ARGS *, enum machine_mode, tree, int *, int);
+extern rtx default_builtin_setjmp_frame_value (void);
+extern bool default_pretend_outgoing_varargs_named (CUMULATIVE_ARGS *);
+
+extern enum machine_mode default_eh_return_filter_mode (void);
+extern enum machine_mode default_libgcc_cmp_return_mode (void);
+extern enum machine_mode default_libgcc_shift_count_mode (void);
+extern enum machine_mode default_unwind_word_mode (void);
+extern unsigned HOST_WIDE_INT default_shift_truncation_mask
+  (enum machine_mode);
+extern unsigned int default_min_divisions_for_recip_mul (enum machine_mode);
+extern int default_mode_rep_extended (enum machine_mode, enum machine_mode);
+
+extern tree default_stack_protect_guard (void);
+extern tree default_external_stack_protect_fail (void);
+extern tree default_hidden_stack_protect_fail (void);
+
+extern enum machine_mode default_mode_for_suffix (char);
+
+extern tree default_cxx_guard_type (void);
+extern tree default_cxx_get_cookie_size (tree);
+
+extern bool hook_pass_by_reference_must_pass_in_stack
+  (CUMULATIVE_ARGS *, enum machine_mode mode, const_tree, bool);
+extern bool hook_callee_copies_named
+  (CUMULATIVE_ARGS *ca, enum machine_mode, const_tree, bool);
+
+extern void default_unwind_emit (FILE *, rtx);
+
+extern bool default_scalar_mode_supported_p (enum machine_mode);
+extern bool default_decimal_float_supported_p (void);
+extern bool default_fixed_point_supported_p (void);
+
+extern const char * default_invalid_within_doloop (const_rtx);
+
+extern tree default_builtin_vectorized_function
+  (enum built_in_function, tree, tree);
+
+extern tree default_builtin_vectorized_conversion (enum tree_code, tree);
+
+extern tree default_builtin_reciprocal (enum built_in_function, bool, bool);
+
+extern bool default_builtin_vector_alignment_reachable (const_tree, bool);
+
+/* These are here, and not in hooks.[ch], because not all users of
+   hooks.h include tm.h, and thus we don't have CUMULATIVE_ARGS.  */
+
+extern bool hook_bool_CUMULATIVE_ARGS_false (CUMULATIVE_ARGS *);
+extern bool hook_bool_CUMULATIVE_ARGS_true (CUMULATIVE_ARGS *);
+
+extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false
+  (CUMULATIVE_ARGS *, enum machine_mode, const_tree, bool);
+extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true
+  (CUMULATIVE_ARGS *, enum machine_mode, const_tree, bool);
+extern int hook_int_CUMULATIVE_ARGS_mode_tree_bool_0
+  (CUMULATIVE_ARGS *, enum machine_mode, tree, bool);
+extern const char *hook_invalid_arg_for_unprototyped_fn
+  (const_tree, const_tree, const_tree);
+extern bool hook_bool_const_rtx_commutative_p (const_rtx, int);
+extern rtx default_function_value (const_tree, const_tree, bool);
+extern rtx default_internal_arg_pointer (void);
+#ifdef IRA_COVER_CLASSES
+extern const enum reg_class *default_ira_cover_classes (void);
+#endif
+extern enum reg_class default_secondary_reload (bool, rtx, enum reg_class,
+						enum machine_mode,
+						secondary_reload_info *);
+extern void hook_void_bitmap (bitmap);
+extern bool default_handle_c_option (size_t, const char *, int);
+extern int default_reloc_rw_mask (void);
+extern tree default_mangle_decl_assembler_name (tree, tree);
+extern tree default_emutls_var_fields (tree, tree *);
+extern tree default_emutls_var_init (tree, tree, tree);
+extern bool default_hard_regno_scratch_ok (unsigned int);
+extern bool default_target_option_valid_attribute_p (tree, tree, tree, int);
+extern bool default_target_option_pragma_parse (tree, tree);
+extern bool default_target_option_can_inline_p (tree, tree);