1 /* General-purpose hooks.
2 Copyright (C) 2002, 2003 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of the GNU General Public License as published by the
6 Free Software Foundation; either version 2, or (at your option) any
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 In other words, you are welcome to use, share and improve this program.
19 You are forbidden to forbid anyone else to use, share and improve
20 what you give them. Help stamp out software-hoarding! */
22 /* This file contains generic hooks that can be used as defaults for
23 target or language-dependent hook initializers. */
27 #include "coretypes.h"
31 /* Generic hook that does absolutely zappo. */
37 /* Generic hook that takes no arguments and returns false. */
39 hook_bool_void_false ()
44 /* The same, but formally returning NO_REGS. */
46 hook_int_void_no_regs (void)
51 /* Generic hook that takes (bool) and returns false. */
53 hook_bool_bool_false (bool a ATTRIBUTE_UNUSED)
59 /* Generic hook that takes (tree, int) and does nothing. */
61 hook_void_tree_int (a, b)
62 tree a ATTRIBUTE_UNUSED;
63 int b ATTRIBUTE_UNUSED;
67 /* Generic hook that takes (FILE *, const char *) and does nothing. */
69 hook_void_FILEptr_constcharptr (a, b)
70 FILE *a ATTRIBUTE_UNUSED;
71 const char *b ATTRIBUTE_UNUSED;
75 /* Used for the TARGET_ASM_CAN_OUTPUT_MI_THUNK hook. */
77 hook_bool_tree_hwi_hwi_tree_false (a, b, c, d)
78 tree a ATTRIBUTE_UNUSED;
79 HOST_WIDE_INT b ATTRIBUTE_UNUSED;
80 HOST_WIDE_INT c ATTRIBUTE_UNUSED;
81 tree d ATTRIBUTE_UNUSED;
87 hook_bool_tree_hwi_hwi_tree_true (a, b, c, d)
88 tree a ATTRIBUTE_UNUSED;
89 HOST_WIDE_INT b ATTRIBUTE_UNUSED;
90 HOST_WIDE_INT c ATTRIBUTE_UNUSED;
91 tree d ATTRIBUTE_UNUSED;
97 default_can_output_mi_thunk_no_vcall (a, b, c, d)
98 tree a ATTRIBUTE_UNUSED;
99 HOST_WIDE_INT b ATTRIBUTE_UNUSED;
101 tree d ATTRIBUTE_UNUSED;
106 /* ??? Used for comp_type_attributes, which ought to return bool. */
108 hook_int_tree_tree_1 (a, b)
109 tree a ATTRIBUTE_UNUSED;
110 tree b ATTRIBUTE_UNUSED;
117 rtx a ATTRIBUTE_UNUSED;
123 hook_int_void_0 (void)
129 hook_int_size_t_constcharptr_int_0 (size_t a ATTRIBUTE_UNUSED,
130 const char *b ATTRIBUTE_UNUSED,
131 int c ATTRIBUTE_UNUSED)
137 hook_uint_uint_constcharptrptr_0 (unsigned int a ATTRIBUTE_UNUSED,
138 const char **b ATTRIBUTE_UNUSED)
145 tree a ATTRIBUTE_UNUSED;
150 hook_void_tree_treeptr (a, b)
151 tree a ATTRIBUTE_UNUSED;
152 tree *b ATTRIBUTE_UNUSED;
157 hook_bool_tree_false (a)
158 tree a ATTRIBUTE_UNUSED;
164 hook_bool_tree_tree_false (a, b)
165 tree a ATTRIBUTE_UNUSED;
166 tree b ATTRIBUTE_UNUSED;
172 hook_bool_rtx_false (a)
173 rtx a ATTRIBUTE_UNUSED;
179 hook_bool_rtx_int_int_intp_false (a, b, c, d)
180 rtx a ATTRIBUTE_UNUSED;
181 int b ATTRIBUTE_UNUSED;
182 int c ATTRIBUTE_UNUSED;
183 int *d ATTRIBUTE_UNUSED;
188 /* Generic hook that takes an rtx and returns it. */
190 hook_rtx_rtx_identity (x)
196 /* Generic hook that takes an rtx and returns NULL_RTX. */
198 hook_rtx_rtx_null (x)
199 rtx x ATTRIBUTE_UNUSED;