| 1 | /* $NetBSD: lwp_private.h,v 1.2 2024/12/01 08:44:43 skrll Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2001 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Klaus Klein. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #ifndef _M68K_LWP_PRIVATE_H_ |
| 33 | #define _M68K_LWP_PRIVATE_H_ |
| 34 | |
| 35 | #include <sys/cdefs.h> |
| 36 | #include <sys/tls.h> |
| 37 | |
| 38 | #include <lwp.h> |
| 39 | |
| 40 | #define TLS_TP_OFFSET 0x7000 |
| 41 | #define TLS_DTV_OFFSET 0x8000 |
| 42 | |
| 43 | __CTASSERT(TLS_TP_OFFSET + sizeof(struct tls_tcb) < 0x8000); |
| 44 | __CTASSERT(TLS_TP_OFFSET % sizeof(struct tls_tcb) == 0); |
| 45 | |
| 46 | __BEGIN_DECLS |
| 47 | |
| 48 | static __inline struct tls_tcb * |
| 49 | __lwp_gettcb_fast(void) |
| 50 | { |
| 51 | unsigned int __tcb = (unsigned int)_lwp_getprivate(); |
| 52 | return (struct tls_tcb *)(uintptr_t) |
| 53 | (__tcb - TLS_TP_OFFSET - sizeof(struct tls_tcb)); |
| 54 | } |
| 55 | |
| 56 | static inline void |
| 57 | __lwp_settcb(struct tls_tcb *__tcb) |
| 58 | { |
| 59 | __tcb += TLS_TP_OFFSET / sizeof(*__tcb) + 1; |
| 60 | _lwp_setprivate(__tcb); |
| 61 | } |
| 62 | __END_DECLS |
| 63 | |
| 64 | #endif /* !_M68K_LWP_PRIVATE_H_ */ |