]>
Commit | Line | Data |
---|---|---|
dff8da6b | 1 | /* Copyright (C) 2003-2024 Free Software Foundation, Inc. |
7756ba9d DH |
2 | |
3 | This file is part of the GNU C Library. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library 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 GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library. If not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
7756ba9d | 18 | |
7756ba9d DH |
19 | #include <sysdep.h> |
20 | ||
0d79fa53 | 21 | #define __HAVE_64B_ATOMICS 0 |
1ea339b6 TR |
22 | #define USE_ATOMIC_COMPILER_BUILTINS 0 |
23 | ||
12d2dd70 SL |
24 | /* XXX Is this actually correct? */ |
25 | #define ATOMIC_EXCHANGE_USES_CAS 1 | |
26 | ||
7756ba9d DH |
27 | |
28 | /* Microblaze does not have byte and halfword forms of load and reserve and | |
29 | store conditional. So for microblaze we stub out the 8- and 16-bit forms. */ | |
30 | #define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval) \ | |
31 | (abort (), 0) | |
32 | ||
33 | #define __arch_compare_and_exchange_bool_16_acq(mem, newval, oldval) \ | |
34 | (abort (), 0) | |
35 | ||
7756ba9d DH |
36 | #define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ |
37 | ({ \ | |
38 | __typeof (*(mem)) __tmp; \ | |
39 | __typeof (mem) __memp = (mem); \ | |
40 | int test; \ | |
41 | __asm __volatile ( \ | |
42 | " addc r0, r0, r0;" \ | |
43 | "1: lwx %0, %3, r0;" \ | |
44 | " addic %1, r0, 0;" \ | |
45 | " bnei %1, 1b;" \ | |
46 | " cmp %1, %0, %4;" \ | |
47 | " bnei %1, 2f;" \ | |
48 | " swx %5, %3, r0;" \ | |
49 | " addic %1, r0, 0;" \ | |
50 | " bnei %1, 1b;" \ | |
51 | "2:" \ | |
52 | : "=&r" (__tmp), \ | |
53 | "=&r" (test), \ | |
54 | "=m" (*__memp) \ | |
55 | : "r" (__memp), \ | |
56 | "r" (oldval), \ | |
57 | "r" (newval) \ | |
58 | : "cc", "memory"); \ | |
59 | __tmp; \ | |
60 | }) | |
61 | ||
62 | #define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ | |
63 | (abort (), (__typeof (*mem)) 0) | |
64 | ||
65 | #define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ | |
66 | ({ \ | |
67 | __typeof (*(mem)) __result; \ | |
68 | if (sizeof (*mem) == 4) \ | |
69 | __result = __arch_compare_and_exchange_val_32_acq (mem, newval, oldval); \ | |
70 | else if (sizeof (*mem) == 8) \ | |
71 | __result = __arch_compare_and_exchange_val_64_acq (mem, newval, oldval); \ | |
72 | else \ | |
73 | abort (); \ | |
74 | __result; \ | |
75 | }) | |
76 | ||
77 | #define atomic_compare_and_exchange_val_rel(mem, newval, oldval) \ | |
78 | ({ \ | |
79 | __typeof (*(mem)) __result; \ | |
80 | if (sizeof (*mem) == 4) \ | |
81 | __result = __arch_compare_and_exchange_val_32_acq (mem, newval, oldval); \ | |
82 | else if (sizeof (*mem) == 8) \ | |
83 | __result = __arch_compare_and_exchange_val_64_acq (mem, newval, oldval); \ | |
84 | else \ | |
85 | abort (); \ | |
86 | __result; \ | |
87 | }) | |
88 | ||
89 | #define __arch_atomic_exchange_32_acq(mem, value) \ | |
90 | ({ \ | |
91 | __typeof (*(mem)) __tmp; \ | |
92 | __typeof (mem) __memp = (mem); \ | |
93 | int test; \ | |
94 | __asm __volatile ( \ | |
95 | " addc r0, r0, r0;" \ | |
96 | "1: lwx %0, %4, r0;" \ | |
97 | " addic %1, r0, 0;" \ | |
98 | " bnei %1, 1b;" \ | |
99 | " swx %3, %4, r0;" \ | |
100 | " addic %1, r0, 0;" \ | |
101 | " bnei %1, 1b;" \ | |
102 | : "=&r" (__tmp), \ | |
103 | "=&r" (test), \ | |
104 | "=m" (*__memp) \ | |
105 | : "r" (value), \ | |
106 | "r" (__memp) \ | |
107 | : "cc", "memory"); \ | |
108 | __tmp; \ | |
109 | }) | |
110 | ||
111 | #define __arch_atomic_exchange_64_acq(mem, newval) \ | |
112 | (abort (), (__typeof (*mem)) 0) | |
113 | ||
114 | #define atomic_exchange_acq(mem, value) \ | |
115 | ({ \ | |
116 | __typeof (*(mem)) __result; \ | |
117 | if (sizeof (*mem) == 4) \ | |
118 | __result = __arch_atomic_exchange_32_acq (mem, value); \ | |
119 | else if (sizeof (*mem) == 8) \ | |
120 | __result = __arch_atomic_exchange_64_acq (mem, value); \ | |
121 | else \ | |
122 | abort (); \ | |
123 | __result; \ | |
124 | }) | |
125 | ||
126 | #define atomic_exchange_rel(mem, value) \ | |
127 | ({ \ | |
128 | __typeof (*(mem)) __result; \ | |
129 | if (sizeof (*mem) == 4) \ | |
130 | __result = __arch_atomic_exchange_32_acq (mem, value); \ | |
131 | else if (sizeof (*mem) == 8) \ | |
132 | __result = __arch_atomic_exchange_64_acq (mem, value); \ | |
133 | else \ | |
134 | abort (); \ | |
135 | __result; \ | |
136 | }) | |
137 | ||
138 | #define __arch_atomic_exchange_and_add_32(mem, value) \ | |
139 | ({ \ | |
140 | __typeof (*(mem)) __tmp; \ | |
141 | __typeof (mem) __memp = (mem); \ | |
142 | int test; \ | |
143 | __asm __volatile ( \ | |
144 | " addc r0, r0, r0;" \ | |
145 | "1: lwx %0, %4, r0;" \ | |
146 | " addic %1, r0, 0;" \ | |
147 | " bnei %1, 1b;" \ | |
148 | " add %1, %3, %0;" \ | |
149 | " swx %1, %4, r0;" \ | |
150 | " addic %1, r0, 0;" \ | |
151 | " bnei %1, 1b;" \ | |
152 | : "=&r" (__tmp), \ | |
153 | "=&r" (test), \ | |
154 | "=m" (*__memp) \ | |
155 | : "r" (value), \ | |
156 | "r" (__memp) \ | |
157 | : "cc", "memory"); \ | |
158 | __tmp; \ | |
159 | }) | |
160 | ||
161 | #define __arch_atomic_exchange_and_add_64(mem, value) \ | |
162 | (abort (), (__typeof (*mem)) 0) | |
163 | ||
164 | #define atomic_exchange_and_add(mem, value) \ | |
165 | ({ \ | |
166 | __typeof (*(mem)) __result; \ | |
167 | if (sizeof (*mem) == 4) \ | |
168 | __result = __arch_atomic_exchange_and_add_32 (mem, value); \ | |
169 | else if (sizeof (*mem) == 8) \ | |
170 | __result = __arch_atomic_exchange_and_add_64 (mem, value); \ | |
171 | else \ | |
172 | abort (); \ | |
173 | __result; \ | |
174 | }) | |
175 | ||
176 | #define __arch_atomic_increment_val_32(mem) \ | |
177 | ({ \ | |
178 | __typeof (*(mem)) __val; \ | |
179 | int test; \ | |
180 | __asm __volatile ( \ | |
181 | " addc r0, r0, r0;" \ | |
182 | "1: lwx %0, %3, r0;" \ | |
183 | " addic %1, r0, 0;" \ | |
184 | " bnei %1, 1b;" \ | |
185 | " addi %0, %0, 1;" \ | |
186 | " swx %0, %3, r0;" \ | |
187 | " addic %1, r0, 0;" \ | |
188 | " bnei %1, 1b;" \ | |
189 | : "=&r" (__val), \ | |
190 | "=&r" (test), \ | |
191 | "=m" (*mem) \ | |
192 | : "r" (mem), \ | |
193 | "m" (*mem) \ | |
194 | : "cc", "memory"); \ | |
195 | __val; \ | |
196 | }) | |
197 | ||
198 | #define __arch_atomic_increment_val_64(mem) \ | |
199 | (abort (), (__typeof (*mem)) 0) | |
200 | ||
201 | #define atomic_increment_val(mem) \ | |
202 | ({ \ | |
203 | __typeof (*(mem)) __result; \ | |
204 | if (sizeof (*(mem)) == 4) \ | |
205 | __result = __arch_atomic_increment_val_32 (mem); \ | |
206 | else if (sizeof (*(mem)) == 8) \ | |
207 | __result = __arch_atomic_increment_val_64 (mem); \ | |
208 | else \ | |
209 | abort (); \ | |
210 | __result; \ | |
211 | }) | |
212 | ||
213 | #define atomic_increment(mem) ({ atomic_increment_val (mem); (void) 0; }) | |
214 | ||
215 | #define __arch_atomic_decrement_val_32(mem) \ | |
216 | ({ \ | |
217 | __typeof (*(mem)) __val; \ | |
218 | int test; \ | |
219 | __asm __volatile ( \ | |
220 | " addc r0, r0, r0;" \ | |
221 | "1: lwx %0, %3, r0;" \ | |
222 | " addic %1, r0, 0;" \ | |
223 | " bnei %1, 1b;" \ | |
224 | " rsubi %0, %0, 1;" \ | |
225 | " swx %0, %3, r0;" \ | |
226 | " addic %1, r0, 0;" \ | |
227 | " bnei %1, 1b;" \ | |
228 | : "=&r" (__val), \ | |
229 | "=&r" (test), \ | |
230 | "=m" (*mem) \ | |
231 | : "r" (mem), \ | |
232 | "m" (*mem) \ | |
233 | : "cc", "memory"); \ | |
234 | __val; \ | |
235 | }) | |
236 | ||
237 | #define __arch_atomic_decrement_val_64(mem) \ | |
238 | (abort (), (__typeof (*mem)) 0) | |
239 | ||
240 | #define atomic_decrement_val(mem) \ | |
241 | ({ \ | |
242 | __typeof (*(mem)) __result; \ | |
243 | if (sizeof (*(mem)) == 4) \ | |
244 | __result = __arch_atomic_decrement_val_32 (mem); \ | |
245 | else if (sizeof (*(mem)) == 8) \ | |
246 | __result = __arch_atomic_decrement_val_64 (mem); \ | |
247 | else \ | |
248 | abort (); \ | |
249 | __result; \ | |
250 | }) | |
251 | ||
252 | #define atomic_decrement(mem) ({ atomic_decrement_val (mem); (void) 0; }) |