diff options
Diffstat (limited to 'sys/arm/include/tls.h')
| -rw-r--r-- | sys/arm/include/tls.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sys/arm/include/tls.h b/sys/arm/include/tls.h new file mode 100644 index 000000000000..a2dae8db320d --- /dev/null +++ b/sys/arm/include/tls.h @@ -0,0 +1,55 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2005 David Xu <davidxu@freebsd.org>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _MACHINE_TLS_H_ +#define _MACHINE_TLS_H_ + +#include <sys/_tls_variant_i.h> +#include <machine/sysarch.h> + +#define TLS_DTV_OFFSET 0 +#define TLS_TCB_ALIGN 8 +#define TLS_TP_OFFSET 0 + +static __inline void +_tcb_set(struct tcb *tcb) +{ + sysarch(ARM_SET_TP, tcb); +} + +static __inline struct tcb * +_tcb_get(void) +{ + struct tcb *tcb; + + __asm __volatile("mrc p15, 0, %0, c13, c0, 3" \ + : "=r" (tcb)); + return (tcb); +} + +#endif /* !_MACHINE_TLS_H_ */ |