| 1 | /*- |
| 2 | * Copyright (c) 2005 David Xu <davidxu@freebsd.org> |
| 3 | * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Portions of this software were developed by SRI International and the |
| 7 | * University of Cambridge Computer Laboratory under DARPA/AFRL contract |
| 8 | * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. |
| 9 | * |
| 10 | * Portions of this software were developed by the University of Cambridge |
| 11 | * Computer Laboratory as part of the CTSRD Project, with support from the |
| 12 | * UK Higher Education Innovation Fund (HEIF). |
| 13 | * |
| 14 | * Redistribution and use in source and binary forms, with or without |
| 15 | * modification, are permitted provided that the following conditions |
| 16 | * are met: |
| 17 | * 1. Redistributions of source code must retain the above copyright |
| 18 | * notice, this list of conditions and the following disclaimer. |
| 19 | * 2. Redistributions in binary form must reproduce the above copyright |
| 20 | * notice, this list of conditions and the following disclaimer in the |
| 21 | * documentation and/or other materials provided with the distribution. |
| 22 | * |
| 23 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 33 | * SUCH DAMAGE. |
| 34 | */ |
| 35 | |
| 36 | #ifndef _MACHINE_TLS_H_ |
| 37 | #define _MACHINE_TLS_H_ |
| 38 | |
| 39 | #include <sys/_tls_variant_i.h> |
| 40 | |
| 41 | #define TLS_DTV_OFFSET 0x800 |
| 42 | #define TLS_TCB_ALIGN 16 |
| 43 | #define TLS_TP_OFFSET 0 |
| 44 | |
| 45 | static __inline void |
| 46 | _tcb_set(struct tcb *tcb) |
| 47 | { |
| 48 | __asm __volatile("addi tp, %0, %1" :: "r" (tcb), "I" (TLS_TCB_SIZE)); |
| 49 | } |
| 50 | |
| 51 | static __inline struct tcb * |
| 52 | _tcb_get(void) |
| 53 | { |
| 54 | struct tcb *tcb; |
| 55 | |
| 56 | __asm __volatile("addi %0, tp, %1" : "=r" (tcb) : "I" (-TLS_TCB_SIZE)); |
| 57 | return (tcb); |
| 58 | } |
| 59 | |
| 60 | #endif /* !_MACHINE_TLS_H_ */ |