Author: br Date: Wed Jan 27 14:10:50 2016 New Revision: 294912 URL: https://svnweb.freebsd.org/changeset/base/294912
Log: Add pthread MD part for RISC-V. Reviewed by: andrew Sponsored by: DARPA, AFRL Sponsored by: HEIF5 Differential Revision: https://reviews.freebsd.org/D5063 Added: head/lib/libthr/arch/riscv/include/ head/lib/libthr/arch/riscv/include/pthread_md.h (contents, props changed) Added: head/lib/libthr/arch/riscv/include/pthread_md.h ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/lib/libthr/arch/riscv/include/pthread_md.h Wed Jan 27 14:10:50 2016 (r294912) @@ -0,0 +1,92 @@ +/*- + * Copyright (c) 2005 David Xu <davi...@freebsd.org> + * Copyright (c) 2015 Ruslan Bukin <b...@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 0x10 + +/* + * 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("mv tp, %0" :: "r"((uint8_t *)tcb + TP_OFFSET)); +} + +/* + * Get the current tcb. + */ +static __inline struct tcb * +_tcb_get(void) +{ + register uint8_t *_tp; + + __asm __volatile("mv %0, tp" : "=r"(_tp)); + + return ((struct tcb *)(_tp - TP_OFFSET)); +} + +extern struct pthread *_thr_initial; + +static __inline struct pthread * +_get_curthread(void) +{ + + if (_thr_initial) + return (_tcb_get()->tcb_thread); + return (NULL); +} + +#endif /* _PTHREAD_MD_H_ */ _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
