projects / urcu.git / blame
| Commit | Line | Data |
|---|---|---|
| d3d3857f MJ |
1 | // SPDX-FileCopyrightText: 1991-1994 by Xerox Corporation. All rights reserved. |
| 2 | // SPDX-FileCopyrightText: 1996-1999 by Silicon Graphics. All rights reserved. | |
| 3 | // SPDX-FileCopyrightText: 1999-2003 Hewlett-Packard Development Company, L.P. | |
| 4 | // SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 5 | // | |
| 6 | // SPDX-License-Identifier: LicenseRef-Boehm-GC | |
| 7 | ||
| 58de5a4b MD |
8 | #ifndef _URCU_ARCH_UATOMIC_SPARC64_H |
| 9 | #define _URCU_ARCH_UATOMIC_SPARC64_H | |
| 10 | ||
| 67ecffc0 | 11 | /* |
| 58de5a4b MD |
12 | * Code inspired from libuatomic_ops-1.2, inherited in part from the |
| 13 | * Boehm-Demers-Weiser conservative garbage collector. | |
| 14 | */ | |
| 15 | ||
| 16 | #include <urcu/compiler.h> | |
| 17 | #include <urcu/system.h> | |
| 18 | ||
| 36bc70a8 MD |
19 | #ifdef __cplusplus |
| 20 | extern "C" { | |
| 67ecffc0 | 21 | #endif |
| 36bc70a8 | 22 | |
| 58de5a4b MD |
23 | /* cmpxchg */ |
| 24 | ||
| 25 | static inline __attribute__((always_inline)) | |
| 26 | unsigned long _uatomic_cmpxchg(void *addr, unsigned long old, | |
| 27 | unsigned long _new, int len) | |
| 28 | { | |
| 29 | switch (len) { | |
| 30 | case 4: | |
| 31 | { | |
| 32 | __asm__ __volatile__ ( | |
| 33 | "membar #StoreLoad | #LoadLoad\n\t" | |
| 34 | "cas [%1],%2,%0\n\t" | |
| 35 | "membar #StoreLoad | #StoreStore\n\t" | |
| 36 | : "+&r" (_new) | |
| 37 | : "r" (addr), "r" (old) | |
| 38 | : "memory"); | |
| 39 | ||
| 40 | return _new; | |
| 41 | } | |
| b39e1761 | 42 | #if (CAA_BITS_PER_LONG == 64) |
| 58de5a4b MD |
43 | case 8: |
| 44 | { | |
| 45 | __asm__ __volatile__ ( | |
| 46 | "membar #StoreLoad | #LoadLoad\n\t" | |
| 47 | "casx [%1],%2,%0\n\t" | |
| 48 | "membar #StoreLoad | #StoreStore\n\t" | |
| 49 | : "+&r" (_new) | |
| 50 | : "r" (addr), "r" (old) | |
| 51 | : "memory"); | |
| 52 | ||
| 53 | return _new; | |
| 54 | } | |
| 55 | #endif | |
| 56 | } | |
| 57 | __builtin_trap(); | |
| 58 | return 0; | |
| 59 | } | |
| 60 | ||
| 61 | ||
| e56d99bf MD |
62 | #define uatomic_cmpxchg(addr, old, _new) \ |
| 63 | ((__typeof__(*(addr))) _uatomic_cmpxchg((addr), \ | |
| 64 | caa_cast_long_keep_sign(old), \ | |
| 65 | caa_cast_long_keep_sign(_new), \ | |
| 58de5a4b MD |
66 | sizeof(*(addr)))) |
| 67 | ||
| 67ecffc0 | 68 | #ifdef __cplusplus |
| 36bc70a8 MD |
69 | } |
| 70 | #endif | |
| 71 | ||
| a2e7bf9c | 72 | #include <urcu/uatomic/generic.h> |
| 8760d94e | 73 | |
| 58de5a4b | 74 | #endif /* _URCU_ARCH_UATOMIC_PPC_H */ |