projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 8d9254fc | 1 | /* Copyright (C) 2012-2020 Free Software Foundation, Inc. |
| f3f5e3c3 EB |
2 | |
| 3 | This file is part of the GNU Transactional Memory Library (libitm). | |
| 4 | ||
| 5 | Libitm is free software; you can redistribute it and/or modify it | |
| 6 | under the terms of the GNU General Public License as published by | |
| 7 | the Free Software Foundation; either version 3 of the License, or | |
| 8 | (at your option) any later version. | |
| 9 | ||
| 10 | Libitm is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 11 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
| 12 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 13 | more details. | |
| 14 | ||
| 15 | Under Section 7 of GPL version 3, you are granted additional | |
| 16 | permissions described in the GCC Runtime Library Exception, version | |
| 17 | 3.1, as published by the Free Software Foundation. | |
| 18 | ||
| 19 | You should have received a copy of the GNU General Public License and | |
| 20 | a copy of the GCC Runtime Library Exception along with this program; | |
| 21 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 22 | <http://www.gnu.org/licenses/>. */ | |
| 23 | ||
| 24 | #include <sys/syscall.h> | |
| 25 | ||
| 26 | static inline long | |
| 27 | sys_futex0 (std::atomic<int> *addr, int op, int val) | |
| 28 | { | |
| 29 | register long int g1 __asm__ ("g1"); | |
| 30 | register long int o0 __asm__ ("o0"); | |
| 31 | register long int o1 __asm__ ("o1"); | |
| 32 | register long int o2 __asm__ ("o2"); | |
| 33 | register long int o3 __asm__ ("o3"); | |
| 34 | long res; | |
| 35 | ||
| 36 | g1 = SYS_futex; | |
| 37 | o0 = (long) addr; | |
| 38 | o1 = op; | |
| 39 | o2 = val; | |
| 40 | o3 = 0; | |
| 41 | ||
| 42 | #ifdef __arch64__ | |
| 43 | __asm volatile ("ta 0x6d" | |
| 44 | #else | |
| 45 | __asm volatile ("ta 0x10" | |
| 46 | #endif | |
| 47 | : "=r"(g1), "=r"(o0) | |
| 48 | : "0"(g1), "1"(o0), "r"(o1), "r"(o2), "r"(o3) | |
| 49 | : "g2", "g3", "g4", "g5", "g6", | |
| 50 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", | |
| 51 | "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", | |
| 52 | "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", | |
| 53 | "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", | |
| 54 | "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", | |
| 55 | "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62", | |
| 56 | "cc", "memory"); | |
| 57 | ||
| 58 | res = o0; | |
| 59 | if (__builtin_expect ((unsigned long) res >= -515UL, 0)) | |
| 60 | res =- res; | |
| 61 | return res; | |
| 62 | } |