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pthread_md.h
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pthread_tls.h
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Editing: pthread_md.h
/*- * Copyright (c) 2005 David Xu <davidxu@freebsd.org> * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> * All rights reserved. * * Portions of this software were developed by SRI International and the * University of Cambridge Computer Laboratory under DARPA/AFRL contract * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. * * Portions of this software were developed by the University of Cambridge * Computer Laboratory as part of the CTSRD Project, with support from the * UK Higher Education Innovation Fund (HEIF). * * 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 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. * * $FreeBSD$ */ /* * Machine-dependent thread prototypes/definitions. */ #ifndef _PTHREAD_MD_H_ #define _PTHREAD_MD_H_ #include <sys/types.h> #include <stddef.h> #define CPU_SPINWAIT #define DTV_OFFSET offsetof(struct tcb, tcb_dtv) #define TP_OFFSET sizeof(struct tcb) /* * Variant I tcb. The structure layout is fixed, don't blindly * change it! */ struct tcb { void *tcb_dtv; struct pthread *tcb_thread; }; /* Called from the thread to set its private data. */ static __inline void _tcb_set(struct tcb *tcb) { __asm __volatile("addi tp, %0, %1" :: "r"(tcb), "I"(TP_OFFSET)); } /* * Get the current tcb. */ static __inline struct tcb * _tcb_get(void) { struct tcb *_tcb; __asm __volatile("addi %0, tp, %1" : "=r"(_tcb) : "I"(-TP_OFFSET)); return (_tcb); } static __inline struct pthread * _get_curthread(void) { if (_thr_initial) return (_tcb_get()->tcb_thread); return (NULL); } #endif /* _PTHREAD_MD_H_ */
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