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e27e52e0 | 1 | /* General-purpose hooks. |
bc620c5c | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009 |
cfaf579d | 3 | Free Software Foundation, Inc. |
e27e52e0 | 4 | |
8c4c00c1 | 5 | This program is free software; you can redistribute it and/or modify it |
6 | under the terms of the GNU General Public License as published by the | |
7 | Free Software Foundation; either version 3, or (at your option) any | |
8 | later version. | |
e27e52e0 | 9 | |
8c4c00c1 | 10 | This program is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
e27e52e0 | 14 | |
8c4c00c1 | 15 | You should have received a copy of the GNU General Public License |
16 | along with this program; see the file COPYING3. If not see | |
17 | <http://www.gnu.org/licenses/>. | |
e27e52e0 | 18 | |
8c4c00c1 | 19 | In other words, you are welcome to use, share and improve this program. |
20 | You are forbidden to forbid anyone else to use, share and improve | |
21 | what you give them. Help stamp out software-hoarding! */ | |
e27e52e0 | 22 | |
23 | /* This file contains generic hooks that can be used as defaults for | |
24 | target or language-dependent hook initializers. */ | |
25 | ||
26 | #include "config.h" | |
27 | #include "system.h" | |
805e22b2 | 28 | #include "coretypes.h" |
29 | #include "tm.h" | |
e27e52e0 | 30 | #include "hooks.h" |
31 | ||
dd436eaf | 32 | /* Generic hook that does absolutely zappo. */ |
33 | void | |
952f0048 | 34 | hook_void_void (void) |
dd436eaf | 35 | { |
36 | } | |
37 | ||
e27e52e0 | 38 | /* Generic hook that takes no arguments and returns false. */ |
39 | bool | |
952f0048 | 40 | hook_bool_void_false (void) |
52470889 | 41 | { |
42 | return false; | |
43 | } | |
7811991d | 44 | |
219626ad | 45 | /* Generic hook that takes no arguments and returns true. */ |
46 | bool | |
47 | hook_bool_void_true (void) | |
48 | { | |
49 | return true; | |
50 | } | |
51 | ||
8af3db02 | 52 | /* Generic hook that takes (bool) and returns false. */ |
53 | bool | |
54 | hook_bool_bool_false (bool a ATTRIBUTE_UNUSED) | |
55 | { | |
56 | return false; | |
57 | } | |
58 | ||
9e7454d0 | 59 | /* Generic hook that takes (enum machine_mode) and returns false. */ |
60 | bool | |
61 | hook_bool_mode_false (enum machine_mode mode ATTRIBUTE_UNUSED) | |
62 | { | |
63 | return false; | |
64 | } | |
65 | ||
f2d0e9f1 | 66 | /* Generic hook that takes (enum machine_mode, rtx) and returns false. */ |
67 | bool | |
a9f1838b | 68 | hook_bool_mode_const_rtx_false (enum machine_mode mode ATTRIBUTE_UNUSED, |
69 | const_rtx value ATTRIBUTE_UNUSED) | |
f2d0e9f1 | 70 | { |
71 | return false; | |
72 | } | |
73 | ||
2dbdc48e | 74 | /* Generic hook that takes (enum machine_mode, rtx) and returns true. */ |
75 | bool | |
a9f1838b | 76 | hook_bool_mode_const_rtx_true (enum machine_mode mode ATTRIBUTE_UNUSED, |
77 | const_rtx value ATTRIBUTE_UNUSED) | |
2dbdc48e | 78 | { |
79 | return true; | |
80 | } | |
81 | ||
67c1e638 | 82 | /* Generic hook that takes (FILE *, const char *) and does nothing. */ |
83 | void | |
952f0048 | 84 | hook_void_FILEptr_constcharptr (FILE *a ATTRIBUTE_UNUSED, const char *b ATTRIBUTE_UNUSED) |
67c1e638 | 85 | { |
86 | } | |
eb344f43 | 87 | |
88 | /* Used for the TARGET_ASM_CAN_OUTPUT_MI_THUNK hook. */ | |
89 | bool | |
a9f1838b | 90 | hook_bool_const_tree_hwi_hwi_const_tree_false (const_tree a ATTRIBUTE_UNUSED, |
91 | HOST_WIDE_INT b ATTRIBUTE_UNUSED, | |
92 | HOST_WIDE_INT c ATTRIBUTE_UNUSED, | |
93 | const_tree d ATTRIBUTE_UNUSED) | |
eb344f43 | 94 | { |
95 | return false; | |
96 | } | |
97 | ||
98 | bool | |
a9f1838b | 99 | hook_bool_const_tree_hwi_hwi_const_tree_true (const_tree a ATTRIBUTE_UNUSED, |
100 | HOST_WIDE_INT b ATTRIBUTE_UNUSED, | |
101 | HOST_WIDE_INT c ATTRIBUTE_UNUSED, | |
102 | const_tree d ATTRIBUTE_UNUSED) | |
eb344f43 | 103 | { |
104 | return true; | |
105 | } | |
106 | ||
76bf7746 | 107 | bool |
108 | hook_bool_constcharptr_size_t_false (const char *a ATTRIBUTE_UNUSED, | |
109 | size_t b ATTRIBUTE_UNUSED) | |
110 | { | |
111 | return false; | |
112 | } | |
113 | ||
ff05e09e | 114 | bool |
115 | hook_bool_size_t_constcharptr_int_true (size_t a ATTRIBUTE_UNUSED, | |
116 | const char *b ATTRIBUTE_UNUSED, | |
117 | int c ATTRIBUTE_UNUSED) | |
118 | { | |
119 | return true; | |
120 | } | |
121 | ||
eb344f43 | 122 | bool |
a9f1838b | 123 | default_can_output_mi_thunk_no_vcall (const_tree a ATTRIBUTE_UNUSED, |
952f0048 | 124 | HOST_WIDE_INT b ATTRIBUTE_UNUSED, |
125 | HOST_WIDE_INT c, | |
a9f1838b | 126 | const_tree d ATTRIBUTE_UNUSED) |
eb344f43 | 127 | { |
128 | return c == 0; | |
129 | } | |
b2ec75b5 | 130 | |
8ff30ff6 | 131 | int |
a9f1838b | 132 | hook_int_const_tree_0 (const_tree a ATTRIBUTE_UNUSED) |
8ff30ff6 | 133 | { |
134 | return 0; | |
135 | } | |
136 | ||
b2ec75b5 | 137 | /* ??? Used for comp_type_attributes, which ought to return bool. */ |
138 | int | |
a9f1838b | 139 | hook_int_const_tree_const_tree_1 (const_tree a ATTRIBUTE_UNUSED, const_tree b ATTRIBUTE_UNUSED) |
b2ec75b5 | 140 | { |
141 | return 1; | |
142 | } | |
143 | ||
ec0457a8 | 144 | int |
952f0048 | 145 | hook_int_rtx_0 (rtx a ATTRIBUTE_UNUSED) |
ec0457a8 | 146 | { |
147 | return 0; | |
148 | } | |
149 | ||
f529eb25 | 150 | int |
151 | hook_int_rtx_bool_0 (rtx a ATTRIBUTE_UNUSED, bool b ATTRIBUTE_UNUSED) | |
152 | { | |
153 | return 0; | |
154 | } | |
155 | ||
e938cdf5 | 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 | ||
4838a8b6 | 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 | ||
b2ec75b5 | 171 | void |
952f0048 | 172 | hook_void_tree (tree a ATTRIBUTE_UNUSED) |
b2ec75b5 | 173 | { |
174 | } | |
175 | ||
065e625b | 176 | void |
9423c9b7 | 177 | hook_void_constcharptr (const char *a ATTRIBUTE_UNUSED) |
065e625b | 178 | { |
179 | } | |
180 | ||
b2ec75b5 | 181 | void |
952f0048 | 182 | hook_void_tree_treeptr (tree a ATTRIBUTE_UNUSED, tree *b ATTRIBUTE_UNUSED) |
b2ec75b5 | 183 | { |
184 | } | |
185 | ||
186 | bool | |
952f0048 | 187 | hook_bool_tree_false (tree a ATTRIBUTE_UNUSED) |
b2ec75b5 | 188 | { |
189 | return false; | |
190 | } | |
a6bbccc1 | 191 | |
f8fd23c0 | 192 | bool |
193 | hook_bool_const_tree_false (const_tree a ATTRIBUTE_UNUSED) | |
194 | { | |
195 | return false; | |
196 | } | |
197 | ||
4e00ee67 | 198 | bool |
199 | hook_bool_tree_true (tree a ATTRIBUTE_UNUSED) | |
200 | { | |
201 | return true; | |
202 | } | |
203 | ||
fb80456a | 204 | bool |
205 | hook_bool_const_tree_true (const_tree a ATTRIBUTE_UNUSED) | |
206 | { | |
207 | return true; | |
208 | } | |
209 | ||
805e22b2 | 210 | bool |
952f0048 | 211 | hook_bool_tree_tree_false (tree a ATTRIBUTE_UNUSED, tree b ATTRIBUTE_UNUSED) |
805e22b2 | 212 | { |
213 | return false; | |
214 | } | |
215 | ||
1e8e9920 | 216 | bool |
217 | hook_bool_tree_bool_false (tree a ATTRIBUTE_UNUSED, bool b ATTRIBUTE_UNUSED) | |
218 | { | |
219 | return false; | |
220 | } | |
221 | ||
a6bbccc1 | 222 | bool |
952f0048 | 223 | hook_bool_rtx_false (rtx a ATTRIBUTE_UNUSED) |
a6bbccc1 | 224 | { |
225 | return false; | |
226 | } | |
fab7adbf | 227 | |
124ac4e4 | 228 | bool |
229 | hook_bool_uintp_uintp_false (unsigned int *a ATTRIBUTE_UNUSED, | |
230 | unsigned int *b ATTRIBUTE_UNUSED) | |
231 | { | |
232 | return false; | |
233 | } | |
234 | ||
fab7adbf | 235 | bool |
f529eb25 | 236 | hook_bool_rtx_int_int_intp_bool_false (rtx a ATTRIBUTE_UNUSED, |
237 | int b ATTRIBUTE_UNUSED, | |
238 | int c ATTRIBUTE_UNUSED, | |
239 | int *d ATTRIBUTE_UNUSED, | |
240 | bool speed_p ATTRIBUTE_UNUSED) | |
fab7adbf | 241 | { |
242 | return false; | |
243 | } | |
244 | ||
bfe57ab7 | 245 | /* Generic hook that takes an rtx and returns it. */ |
246 | rtx | |
952f0048 | 247 | hook_rtx_rtx_identity (rtx x) |
bfe57ab7 | 248 | { |
249 | return x; | |
250 | } | |
251 | ||
9754a2f0 | 252 | /* Generic hook that takes an rtx and returns NULL_RTX. */ |
253 | rtx | |
952f0048 | 254 | hook_rtx_rtx_null (rtx x ATTRIBUTE_UNUSED) |
9754a2f0 | 255 | { |
4e00ee67 | 256 | return NULL; |
257 | } | |
258 | ||
259 | /* Generic hook that takes a tree and an int and returns NULL_RTX. */ | |
260 | rtx | |
261 | hook_rtx_tree_int_null (tree a ATTRIBUTE_UNUSED, int b ATTRIBUTE_UNUSED) | |
262 | { | |
263 | return NULL; | |
9754a2f0 | 264 | } |
ddf4604f | 265 | |
64d5fb6a | 266 | /* Generic hook that takes three trees and returns the last one as is. */ |
0fb2666c | 267 | tree |
64d5fb6a | 268 | hook_tree_tree_tree_tree_3rd_identity (tree a ATTRIBUTE_UNUSED, |
269 | tree b ATTRIBUTE_UNUSED, tree c) | |
0fb2666c | 270 | { |
64d5fb6a | 271 | return c; |
0fb2666c | 272 | } |
333715c2 | 273 | |
274 | /* Generic hook that takes a tree and returns a NULL string. */ | |
275 | const char * | |
a9f1838b | 276 | hook_constcharptr_const_tree_null (const_tree t ATTRIBUTE_UNUSED) |
333715c2 | 277 | { |
278 | return NULL; | |
279 | } | |
60284f2b | 280 | |
e174638f | 281 | tree |
282 | hook_tree_tree_tree_bool_null (tree t0 ATTRIBUTE_UNUSED, | |
283 | tree t1 ATTRIBUTE_UNUSED, | |
0ab8af67 | 284 | bool ignore ATTRIBUTE_UNUSED) |
60284f2b | 285 | { |
286 | return NULL; | |
287 | } | |
1606e68a | 288 | |
1e8e9920 | 289 | tree |
290 | hook_tree_tree_tree_null (tree t0 ATTRIBUTE_UNUSED, tree t1 ATTRIBUTE_UNUSED) | |
291 | { | |
292 | return NULL; | |
293 | } | |
294 | ||
fd6481cf | 295 | tree |
296 | hook_tree_tree_tree_tree_null (tree t0 ATTRIBUTE_UNUSED, | |
297 | tree t1 ATTRIBUTE_UNUSED, | |
298 | tree t2 ATTRIBUTE_UNUSED) | |
299 | { | |
300 | return NULL; | |
301 | } | |
302 | ||
1606e68a | 303 | /* Generic hook that takes a rtx and returns a NULL string. */ |
304 | const char * | |
a9f1838b | 305 | hook_constcharptr_const_rtx_null (const_rtx r ATTRIBUTE_UNUSED) |
1606e68a | 306 | { |
307 | return NULL; | |
308 | } | |
7a979707 | 309 | |
310 | const char * | |
a9f1838b | 311 | hook_constcharptr_const_tree_const_tree_null (const_tree t0 ATTRIBUTE_UNUSED, |
312 | const_tree t1 ATTRIBUTE_UNUSED) | |
7a979707 | 313 | { |
314 | return NULL; | |
315 | } | |
316 | ||
317 | const char * | |
a9f1838b | 318 | hook_constcharptr_int_const_tree_null (int i ATTRIBUTE_UNUSED, |
319 | const_tree t0 ATTRIBUTE_UNUSED) | |
7a979707 | 320 | { |
321 | return NULL; | |
322 | } | |
323 | ||
324 | const char * | |
a9f1838b | 325 | hook_constcharptr_int_const_tree_const_tree_null (int i ATTRIBUTE_UNUSED, |
326 | const_tree t0 ATTRIBUTE_UNUSED, | |
327 | const_tree t1 ATTRIBUTE_UNUSED) | |
7a979707 | 328 | { |
329 | return NULL; | |
330 | } |