FreeBSD/Linux Kernel Cross Reference
sys/riscv/include/pcb.h

     /*-
      * Copyright (c) 2015-2016 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _MACHINE_PCB_H_
    #define _MACHINE_PCB_H_
    
    #ifndef LOCORE
    
    struct trapframe;
    
    struct pcb {
            uint64_t        pcb_ra;         /* Return address */
            uint64_t        pcb_sp;         /* Stack pointer */
            uint64_t        pcb_gp;         /* Global pointer */
            uint64_t        pcb_tp;         /* Thread pointer */
            uint64_t        pcb_s[12];      /* Saved registers */
            uint64_t        pcb_x[32][2];   /* Floating point registers */
            uint64_t        pcb_fcsr;       /* Floating point control reg */
            uint64_t        pcb_fpflags;    /* Floating point flags */
    #define PCB_FP_STARTED  0x1
    #define PCB_FP_USERMASK 0x1
            vm_offset_t     pcb_onfault;    /* Copyinout fault handler */
    };
    
    #ifdef _KERNEL
    void    makectx(struct trapframe *tf, struct pcb *pcb);
    int     savectx(struct pcb *pcb) __returns_twice;
    #endif
    
    #endif /* !LOCORE */
    
    #endif /* !_MACHINE_PCB_H_ */

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