| 1 | /*- |
| 2 | * Copyright (c) 2005 David Xu <davidxu@freebsd.org>. |
| 3 | * Copyright (c) 2014 the FreeBSD Foundation |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Portions of this software were developed by Andrew Turner |
| 7 | * under sponsorship from the FreeBSD Foundation |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * |
| 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 20 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 21 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 24 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #ifdef __arm__ |
| 32 | #include <arm/tls.h> |
| 33 | #else /* !__arm__ */ |
| 34 | |
| 35 | #ifndef _MACHINE_TLS_H_ |
| 36 | #define _MACHINE_TLS_H_ |
| 37 | |
| 38 | #include <sys/_tls_variant_i.h> |
| 39 | |
| 40 | #define TLS_DTV_OFFSET 0 |
| 41 | #define TLS_TCB_ALIGN 16 |
| 42 | #define TLS_TP_OFFSET 0 |
| 43 | |
| 44 | static __inline void |
| 45 | _tcb_set(struct tcb *tcb) |
| 46 | { |
| 47 | __asm __volatile("msr tpidr_el0, %x0" :: "r" (tcb)); |
| 48 | } |
| 49 | |
| 50 | static __inline struct tcb * |
| 51 | _tcb_get(void) |
| 52 | { |
| 53 | struct tcb *tcb; |
| 54 | |
| 55 | __asm __volatile("mrs %x0, tpidr_el0" : "=r" (tcb)); |
| 56 | return (tcb); |
| 57 | } |
| 58 | |
| 59 | #endif /* !_MACHINE_TLS_H_ */ |
| 60 | |
| 61 | #endif /* !__arm__ */ |