freebsd-dev/sys/mips/include/tls.h

/*-
 * Copyright (c) 2012 Oleksandr Tymoshenko
 * 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,
 *    without modification, immediately at the beginning of the file.
 * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
 *
 * $FreeBSD$
 * 
 */

#ifndef	__MIPS_TLS_H__
#define	__MIPS_TLS_H__

#if defined(_KERNEL) && !defined(KLD_MODULE) && !defined(_STANDALONE)
#include "opt_compat.h"
#endif

/*
 * TLS parameters
 */

#define TLS_TP_OFFSET	0x7000
#define TLS_DTP_OFFSET	0x8000

#ifdef __mips_n64
#define TLS_TCB_SIZE	16
#ifdef COMPAT_FREEBSD32
#define TLS_TCB_SIZE32	8
#endif
#else
#define TLS_TCB_SIZE	8
#endif

#endif	/* __MIPS_TLS_H__ */
Prepare for large TLS redo. Save pointer to the beginning of TLS area, and offset it only if requested by RDHWR handler. Otherwise things get overly complicated - we need to track whether address passsed in request for setting td_md.md_tls is already offseted or not. 2012-03-06 03:25:50 +00:00			`/*-`
			`* Copyright (c) 2012 Oleksandr Tymoshenko`
			`* 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,`
			`* without modification, immediately at the beginning of the file.`
			`* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.`
			`*`
			`* $FreeBSD$`
			`*`
			`*/`

			`#ifndef __MIPS_TLS_H__`
			`#define __MIPS_TLS_H__`

When emulating rdhwr for TLS, use the 32-bit offset under COMPAT_FREEBSD32. 2012-03-06 07:47:28 +00:00			`#if defined(_KERNEL) && !defined(KLD_MODULE) && !defined(_STANDALONE)`
			`#include "opt_compat.h"`
			`#endif`

Prepare for large TLS redo. Save pointer to the beginning of TLS area, and offset it only if requested by RDHWR handler. Otherwise things get overly complicated - we need to track whether address passsed in request for setting td_md.md_tls is already offseted or not. 2012-03-06 03:25:50 +00:00			`/*`
			`* TLS parameters`
			`*/`

			`#define TLS_TP_OFFSET 0x7000`
			`#define TLS_DTP_OFFSET 0x8000`

			`#ifdef __mips_n64`
			`#define TLS_TCB_SIZE 16`
When emulating rdhwr for TLS, use the 32-bit offset under COMPAT_FREEBSD32. 2012-03-06 07:47:28 +00:00			`#ifdef COMPAT_FREEBSD32`
			`#define TLS_TCB_SIZE32 8`
			`#endif`
Prepare for large TLS redo. Save pointer to the beginning of TLS area, and offset it only if requested by RDHWR handler. Otherwise things get overly complicated - we need to track whether address passsed in request for setting td_md.md_tls is already offseted or not. 2012-03-06 03:25:50 +00:00			`#else`
			`#define TLS_TCB_SIZE 8`
			`#endif`

			`#endif /* __MIPS_TLS_H__ */`