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Commit | Line | Data |
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e4ec2cac | 1 | /* General-purpose hooks. |
e129d93a | 2 | Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. |
e4ec2cac AO |
3 | |
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 | |
7 | later version. | |
8 | ||
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. | |
13 | ||
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. | |
17 | ||
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! */ | |
21 | ||
22 | /* This file contains generic hooks that can be used as defaults for | |
23 | target or language-dependent hook initializers. */ | |
24 | ||
25 | #include "config.h" | |
26 | #include "system.h" | |
4977bab6 ZW |
27 | #include "coretypes.h" |
28 | #include "tm.h" | |
e4ec2cac AO |
29 | #include "hooks.h" |
30 | ||
e5f3b786 NB |
31 | /* Generic hook that does absolutely zappo. */ |
32 | void | |
1d088dee | 33 | hook_void_void (void) |
e5f3b786 NB |
34 | { |
35 | } | |
36 | ||
e4ec2cac AO |
37 | /* Generic hook that takes no arguments and returns false. */ |
38 | bool | |
1d088dee | 39 | hook_bool_void_false (void) |
ae46c4e0 RH |
40 | { |
41 | return false; | |
42 | } | |
fb49053f | 43 | |
a3424f5c RH |
44 | /* The same, but formally returning NO_REGS. */ |
45 | int | |
46 | hook_int_void_no_regs (void) | |
fe3ad572 SC |
47 | { |
48 | return NO_REGS; | |
49 | } | |
50 | ||
51 | /* Generic hook that takes (bool) and returns false. */ | |
52 | bool | |
53 | hook_bool_bool_false (bool a ATTRIBUTE_UNUSED) | |
54 | { | |
55 | return false; | |
56 | } | |
57 | ||
5eb99654 KG |
58 | /* Generic hook that takes (FILE *, const char *) and does nothing. */ |
59 | void | |
1d088dee | 60 | hook_void_FILEptr_constcharptr (FILE *a ATTRIBUTE_UNUSED, const char *b ATTRIBUTE_UNUSED) |
5eb99654 KG |
61 | { |
62 | } | |
3961e8fe RH |
63 | |
64 | /* Used for the TARGET_ASM_CAN_OUTPUT_MI_THUNK hook. */ | |
65 | bool | |
1d088dee AJ |
66 | hook_bool_tree_hwi_hwi_tree_false (tree a ATTRIBUTE_UNUSED, |
67 | HOST_WIDE_INT b ATTRIBUTE_UNUSED, | |
68 | HOST_WIDE_INT c ATTRIBUTE_UNUSED, | |
69 | tree d ATTRIBUTE_UNUSED) | |
3961e8fe RH |
70 | { |
71 | return false; | |
72 | } | |
73 | ||
74 | bool | |
1d088dee AJ |
75 | hook_bool_tree_hwi_hwi_tree_true (tree a ATTRIBUTE_UNUSED, |
76 | HOST_WIDE_INT b ATTRIBUTE_UNUSED, | |
77 | HOST_WIDE_INT c ATTRIBUTE_UNUSED, | |
78 | tree d ATTRIBUTE_UNUSED) | |
3961e8fe RH |
79 | { |
80 | return true; | |
81 | } | |
82 | ||
cb66e385 NB |
83 | bool |
84 | hook_bool_constcharptr_size_t_false (const char *a ATTRIBUTE_UNUSED, | |
85 | size_t b ATTRIBUTE_UNUSED) | |
86 | { | |
87 | return false; | |
88 | } | |
89 | ||
3961e8fe | 90 | bool |
1d088dee AJ |
91 | default_can_output_mi_thunk_no_vcall (tree a ATTRIBUTE_UNUSED, |
92 | HOST_WIDE_INT b ATTRIBUTE_UNUSED, | |
93 | HOST_WIDE_INT c, | |
94 | tree d ATTRIBUTE_UNUSED) | |
3961e8fe RH |
95 | { |
96 | return c == 0; | |
97 | } | |
7b1bd3c5 RH |
98 | |
99 | /* ??? Used for comp_type_attributes, which ought to return bool. */ | |
100 | int | |
1d088dee | 101 | hook_int_tree_tree_1 (tree a ATTRIBUTE_UNUSED, tree b ATTRIBUTE_UNUSED) |
7b1bd3c5 RH |
102 | { |
103 | return 1; | |
104 | } | |
105 | ||
dcefdf67 | 106 | int |
1d088dee | 107 | hook_int_rtx_0 (rtx a ATTRIBUTE_UNUSED) |
dcefdf67 RH |
108 | { |
109 | return 0; | |
110 | } | |
111 | ||
7fb26bb0 NB |
112 | int |
113 | hook_int_size_t_constcharptr_int_0 (size_t a ATTRIBUTE_UNUSED, | |
114 | const char *b ATTRIBUTE_UNUSED, | |
115 | int c ATTRIBUTE_UNUSED) | |
116 | { | |
117 | return 0; | |
118 | } | |
119 | ||
b86f6cd9 NB |
120 | unsigned int |
121 | hook_uint_uint_constcharptrptr_0 (unsigned int a ATTRIBUTE_UNUSED, | |
122 | const char **b ATTRIBUTE_UNUSED) | |
123 | { | |
124 | return 0; | |
125 | } | |
126 | ||
7b1bd3c5 | 127 | void |
1d088dee | 128 | hook_void_tree (tree a ATTRIBUTE_UNUSED) |
7b1bd3c5 RH |
129 | { |
130 | } | |
131 | ||
132 | void | |
1d088dee | 133 | hook_void_tree_treeptr (tree a ATTRIBUTE_UNUSED, tree *b ATTRIBUTE_UNUSED) |
7b1bd3c5 RH |
134 | { |
135 | } | |
136 | ||
137 | bool | |
1d088dee | 138 | hook_bool_tree_false (tree a ATTRIBUTE_UNUSED) |
7b1bd3c5 RH |
139 | { |
140 | return false; | |
141 | } | |
3a04ff64 | 142 | |
c6e8c921 GK |
143 | bool |
144 | hook_bool_tree_true (tree a ATTRIBUTE_UNUSED) | |
145 | { | |
146 | return true; | |
147 | } | |
148 | ||
4977bab6 | 149 | bool |
1d088dee | 150 | hook_bool_tree_tree_false (tree a ATTRIBUTE_UNUSED, tree b ATTRIBUTE_UNUSED) |
4977bab6 ZW |
151 | { |
152 | return false; | |
153 | } | |
154 | ||
3a04ff64 | 155 | bool |
1d088dee | 156 | hook_bool_rtx_false (rtx a ATTRIBUTE_UNUSED) |
3a04ff64 RH |
157 | { |
158 | return false; | |
159 | } | |
3c50106f | 160 | |
e129d93a ILT |
161 | bool |
162 | hook_bool_uintp_uintp_false (unsigned int *a ATTRIBUTE_UNUSED, | |
163 | unsigned int *b ATTRIBUTE_UNUSED) | |
164 | { | |
165 | return false; | |
166 | } | |
167 | ||
3c50106f | 168 | bool |
1d088dee AJ |
169 | hook_bool_rtx_int_int_intp_false (rtx a ATTRIBUTE_UNUSED, |
170 | int b ATTRIBUTE_UNUSED, | |
171 | int c ATTRIBUTE_UNUSED, | |
172 | int *d ATTRIBUTE_UNUSED) | |
3c50106f RH |
173 | { |
174 | return false; | |
175 | } | |
176 | ||
7daebb7a RS |
177 | /* Generic hook that takes an rtx and returns it. */ |
178 | rtx | |
1d088dee | 179 | hook_rtx_rtx_identity (rtx x) |
7daebb7a RS |
180 | { |
181 | return x; | |
182 | } | |
183 | ||
96714395 AH |
184 | /* Generic hook that takes an rtx and returns NULL_RTX. */ |
185 | rtx | |
1d088dee | 186 | hook_rtx_rtx_null (rtx x ATTRIBUTE_UNUSED) |
96714395 | 187 | { |
c6e8c921 GK |
188 | return NULL; |
189 | } | |
190 | ||
191 | /* Generic hook that takes a tree and an int and returns NULL_RTX. */ | |
192 | rtx | |
193 | hook_rtx_tree_int_null (tree a ATTRIBUTE_UNUSED, int b ATTRIBUTE_UNUSED) | |
194 | { | |
195 | return NULL; | |
96714395 | 196 | } |
18c81520 GK |
197 | |
198 | /* Generic hook that takes a size_t and returns NULL. */ | |
199 | void * | |
200 | hook_voidp_size_t_null (size_t a ATTRIBUTE_UNUSED) | |
201 | { | |
202 | return NULL; | |
203 | } | |
204 | ||
205 | /* Generic hook that takes a size_t and a pointer and returns false. */ | |
206 | bool | |
207 | hook_bool_voidp_size_t_false (void * a ATTRIBUTE_UNUSED, | |
208 | size_t b ATTRIBUTE_UNUSED) | |
209 | { | |
210 | return false; | |
211 | } | |
67dfe110 KH |
212 | |
213 | /* Generic hook that takes a tree and returns it as is. */ | |
214 | tree | |
215 | hook_tree_tree_identity (tree a) | |
216 | { | |
217 | return a; | |
218 | } |