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pthread_md.h
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pthread_tls.h
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Editing: pthread_md.h
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * 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. * * $FreeBSD$ */ /* * Machine-dependent thread prototypes/definitions. */ #ifndef _PTHREAD_MD_H_ #define _PTHREAD_MD_H_ #include <sys/types.h> #include <machine/sysarch.h> #include <stddef.h> #define CPU_SPINWAIT #define DTV_OFFSET offsetof(struct tcb, tcb_dtv) /* * Variant I tcb. The structure layout is fixed, don't blindly * change it. */ struct tcb { void *tcb_dtv; /* required by rtld */ struct pthread *tcb_thread; /* our hook */ }; /* Called from the thread to set its private data. */ static __inline void _tcb_set(struct tcb *tcb) { #ifdef ARM_TP_ADDRESS *((struct tcb **)ARM_TP_ADDRESS) = tcb; /* avoids a system call */ #else sysarch(ARM_SET_TP, tcb); #endif } /* * Get the current tcb. */ static __inline struct tcb * _tcb_get(void) { #ifdef ARM_TP_ADDRESS return (*((struct tcb **)ARM_TP_ADDRESS)); #else struct tcb *tcb; __asm __volatile("mrc p15, 0, %0, c13, c0, 3" \ : "=r" (tcb)); return (tcb); #endif } 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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