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Commit | Line | Data |
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e4ec2cac | 1 | /* General-purpose hooks. |
bc7ffd06 | 2 | Copyright (C) 2002, 2003, 2004, 2005 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 | |
366ccddb | 16 | Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
e4ec2cac AO |
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 | |
af287697 MM |
44 | /* Generic hook that takes no arguments and returns true. */ |
45 | bool | |
46 | hook_bool_void_true (void) | |
47 | { | |
48 | return true; | |
49 | } | |
50 | ||
8c27b7d4 | 51 | /* Generic hook that takes no arguments and returns NO_REGS. */ |
a3424f5c RH |
52 | int |
53 | hook_int_void_no_regs (void) | |
fe3ad572 SC |
54 | { |
55 | return NO_REGS; | |
56 | } | |
57 | ||
58 | /* Generic hook that takes (bool) and returns false. */ | |
59 | bool | |
60 | hook_bool_bool_false (bool a ATTRIBUTE_UNUSED) | |
61 | { | |
62 | return false; | |
63 | } | |
64 | ||
f676971a EC |
65 | /* Generic hook that takes (enum machine_mode) and returns false. */ |
66 | bool | |
67 | hook_bool_mode_false (enum machine_mode mode ATTRIBUTE_UNUSED) | |
68 | { | |
69 | return false; | |
70 | } | |
71 | ||
aacd3885 RS |
72 | /* Generic hook that takes (enum machine_mode, rtx) and returns false. */ |
73 | bool | |
74 | hook_bool_mode_rtx_false (enum machine_mode mode ATTRIBUTE_UNUSED, | |
75 | rtx value ATTRIBUTE_UNUSED) | |
76 | { | |
77 | return false; | |
78 | } | |
79 | ||
1d3dbd99 RS |
80 | /* Generic hook that takes (enum machine_mode, rtx) and returns true. */ |
81 | bool | |
82 | hook_bool_mode_rtx_true (enum machine_mode mode ATTRIBUTE_UNUSED, | |
83 | rtx value ATTRIBUTE_UNUSED) | |
84 | { | |
85 | return true; | |
86 | } | |
87 | ||
5eb99654 KG |
88 | /* Generic hook that takes (FILE *, const char *) and does nothing. */ |
89 | void | |
1d088dee | 90 | hook_void_FILEptr_constcharptr (FILE *a ATTRIBUTE_UNUSED, const char *b ATTRIBUTE_UNUSED) |
5eb99654 KG |
91 | { |
92 | } | |
3961e8fe RH |
93 | |
94 | /* Used for the TARGET_ASM_CAN_OUTPUT_MI_THUNK hook. */ | |
95 | bool | |
1d088dee AJ |
96 | hook_bool_tree_hwi_hwi_tree_false (tree a ATTRIBUTE_UNUSED, |
97 | HOST_WIDE_INT b ATTRIBUTE_UNUSED, | |
98 | HOST_WIDE_INT c ATTRIBUTE_UNUSED, | |
99 | tree d ATTRIBUTE_UNUSED) | |
3961e8fe RH |
100 | { |
101 | return false; | |
102 | } | |
103 | ||
104 | bool | |
1d088dee AJ |
105 | hook_bool_tree_hwi_hwi_tree_true (tree a ATTRIBUTE_UNUSED, |
106 | HOST_WIDE_INT b ATTRIBUTE_UNUSED, | |
107 | HOST_WIDE_INT c ATTRIBUTE_UNUSED, | |
108 | tree d ATTRIBUTE_UNUSED) | |
3961e8fe RH |
109 | { |
110 | return true; | |
111 | } | |
112 | ||
cb66e385 NB |
113 | bool |
114 | hook_bool_constcharptr_size_t_false (const char *a ATTRIBUTE_UNUSED, | |
115 | size_t b ATTRIBUTE_UNUSED) | |
116 | { | |
117 | return false; | |
118 | } | |
119 | ||
75685792 RS |
120 | bool |
121 | hook_bool_size_t_constcharptr_int_true (size_t a ATTRIBUTE_UNUSED, | |
122 | const char *b ATTRIBUTE_UNUSED, | |
123 | int c ATTRIBUTE_UNUSED) | |
124 | { | |
125 | return true; | |
126 | } | |
127 | ||
3961e8fe | 128 | bool |
1d088dee AJ |
129 | default_can_output_mi_thunk_no_vcall (tree a ATTRIBUTE_UNUSED, |
130 | HOST_WIDE_INT b ATTRIBUTE_UNUSED, | |
131 | HOST_WIDE_INT c, | |
132 | tree d ATTRIBUTE_UNUSED) | |
3961e8fe RH |
133 | { |
134 | return c == 0; | |
135 | } | |
7b1bd3c5 | 136 | |
a1c496cb EC |
137 | int |
138 | hook_int_tree_0 (tree a ATTRIBUTE_UNUSED) | |
139 | { | |
140 | return 0; | |
141 | } | |
142 | ||
7b1bd3c5 RH |
143 | /* ??? Used for comp_type_attributes, which ought to return bool. */ |
144 | int | |
1d088dee | 145 | hook_int_tree_tree_1 (tree a ATTRIBUTE_UNUSED, tree b ATTRIBUTE_UNUSED) |
7b1bd3c5 RH |
146 | { |
147 | return 1; | |
148 | } | |
149 | ||
dcefdf67 | 150 | int |
1d088dee | 151 | hook_int_rtx_0 (rtx a ATTRIBUTE_UNUSED) |
dcefdf67 RH |
152 | { |
153 | return 0; | |
154 | } | |
155 | ||
7fb26bb0 NB |
156 | int |
157 | hook_int_size_t_constcharptr_int_0 (size_t a ATTRIBUTE_UNUSED, | |
158 | const char *b ATTRIBUTE_UNUSED, | |
159 | int c ATTRIBUTE_UNUSED) | |
160 | { | |
161 | return 0; | |
162 | } | |
163 | ||
b86f6cd9 NB |
164 | unsigned int |
165 | hook_uint_uint_constcharptrptr_0 (unsigned int a ATTRIBUTE_UNUSED, | |
166 | const char **b ATTRIBUTE_UNUSED) | |
167 | { | |
168 | return 0; | |
169 | } | |
170 | ||
7b1bd3c5 | 171 | void |
1d088dee | 172 | hook_void_tree (tree a ATTRIBUTE_UNUSED) |
7b1bd3c5 RH |
173 | { |
174 | } | |
175 | ||
94d1613b | 176 | void |
8e3e233b | 177 | hook_void_constcharptr (const char *a ATTRIBUTE_UNUSED) |
94d1613b MS |
178 | { |
179 | } | |
180 | ||
7b1bd3c5 | 181 | void |
1d088dee | 182 | hook_void_tree_treeptr (tree a ATTRIBUTE_UNUSED, tree *b ATTRIBUTE_UNUSED) |
7b1bd3c5 RH |
183 | { |
184 | } | |
185 | ||
186 | bool | |
1d088dee | 187 | hook_bool_tree_false (tree a ATTRIBUTE_UNUSED) |
7b1bd3c5 RH |
188 | { |
189 | return false; | |
190 | } | |
3a04ff64 | 191 | |
c6e8c921 GK |
192 | bool |
193 | hook_bool_tree_true (tree a ATTRIBUTE_UNUSED) | |
194 | { | |
195 | return true; | |
196 | } | |
197 | ||
4977bab6 | 198 | bool |
1d088dee | 199 | hook_bool_tree_tree_false (tree a ATTRIBUTE_UNUSED, tree b ATTRIBUTE_UNUSED) |
4977bab6 ZW |
200 | { |
201 | return false; | |
202 | } | |
203 | ||
953ff289 DN |
204 | bool |
205 | hook_bool_tree_bool_false (tree a ATTRIBUTE_UNUSED, bool b ATTRIBUTE_UNUSED) | |
206 | { | |
207 | return false; | |
208 | } | |
209 | ||
3a04ff64 | 210 | bool |
1d088dee | 211 | hook_bool_rtx_false (rtx a ATTRIBUTE_UNUSED) |
3a04ff64 RH |
212 | { |
213 | return false; | |
214 | } | |
3c50106f | 215 | |
e129d93a ILT |
216 | bool |
217 | hook_bool_uintp_uintp_false (unsigned int *a ATTRIBUTE_UNUSED, | |
218 | unsigned int *b ATTRIBUTE_UNUSED) | |
219 | { | |
220 | return false; | |
221 | } | |
222 | ||
3c50106f | 223 | bool |
1d088dee AJ |
224 | hook_bool_rtx_int_int_intp_false (rtx a ATTRIBUTE_UNUSED, |
225 | int b ATTRIBUTE_UNUSED, | |
226 | int c ATTRIBUTE_UNUSED, | |
227 | int *d ATTRIBUTE_UNUSED) | |
3c50106f RH |
228 | { |
229 | return false; | |
230 | } | |
231 | ||
7daebb7a RS |
232 | /* Generic hook that takes an rtx and returns it. */ |
233 | rtx | |
1d088dee | 234 | hook_rtx_rtx_identity (rtx x) |
7daebb7a RS |
235 | { |
236 | return x; | |
237 | } | |
238 | ||
96714395 AH |
239 | /* Generic hook that takes an rtx and returns NULL_RTX. */ |
240 | rtx | |
1d088dee | 241 | hook_rtx_rtx_null (rtx x ATTRIBUTE_UNUSED) |
96714395 | 242 | { |
c6e8c921 GK |
243 | return NULL; |
244 | } | |
245 | ||
246 | /* Generic hook that takes a tree and an int and returns NULL_RTX. */ | |
247 | rtx | |
248 | hook_rtx_tree_int_null (tree a ATTRIBUTE_UNUSED, int b ATTRIBUTE_UNUSED) | |
249 | { | |
250 | return NULL; | |
96714395 | 251 | } |
18c81520 | 252 | |
61158923 | 253 | /* Generic hook that takes three trees and returns the last one as is. */ |
67dfe110 | 254 | tree |
61158923 HPN |
255 | hook_tree_tree_tree_tree_3rd_identity (tree a ATTRIBUTE_UNUSED, |
256 | tree b ATTRIBUTE_UNUSED, tree c) | |
67dfe110 | 257 | { |
61158923 | 258 | return c; |
67dfe110 | 259 | } |
f18eca82 ZL |
260 | |
261 | /* Generic hook that takes a tree and returns a NULL string. */ | |
262 | const char * | |
263 | hook_constcharptr_tree_null (tree t ATTRIBUTE_UNUSED) | |
264 | { | |
265 | return NULL; | |
266 | } | |
55e74277 PB |
267 | |
268 | tree | |
a05a80fc KH |
269 | hook_tree_tree_tree_bool_null (tree t0 ATTRIBUTE_UNUSED, tree t1 ATTRIBUTE_UNUSED, |
270 | bool ignore ATTRIBUTE_UNUSED) | |
55e74277 PB |
271 | { |
272 | return NULL; | |
273 | } | |
e7e64a25 | 274 | |
953ff289 DN |
275 | tree |
276 | hook_tree_tree_tree_null (tree t0 ATTRIBUTE_UNUSED, tree t1 ATTRIBUTE_UNUSED) | |
277 | { | |
278 | return NULL; | |
279 | } | |
280 | ||
e7e64a25 AS |
281 | /* Generic hook that takes a rtx and returns a NULL string. */ |
282 | const char * | |
283 | hook_constcharptr_rtx_null (rtx r ATTRIBUTE_UNUSED) | |
284 | { | |
285 | return NULL; | |
286 | } | |
4de67c26 JM |
287 | |
288 | const char * | |
289 | hook_constcharptr_tree_tree_null (tree t0 ATTRIBUTE_UNUSED, | |
290 | tree t1 ATTRIBUTE_UNUSED) | |
291 | { | |
292 | return NULL; | |
293 | } | |
294 | ||
295 | const char * | |
296 | hook_constcharptr_int_tree_null (int i ATTRIBUTE_UNUSED, | |
297 | tree t0 ATTRIBUTE_UNUSED) | |
298 | { | |
299 | return NULL; | |
300 | } | |
301 | ||
302 | const char * | |
303 | hook_constcharptr_int_tree_tree_null (int i ATTRIBUTE_UNUSED, | |
304 | tree t0 ATTRIBUTE_UNUSED, | |
305 | tree t1 ATTRIBUTE_UNUSED) | |
306 | { | |
307 | return NULL; | |
308 | } |