/*      $OpenBSD: pcb.h,v 1.8 2018/01/26 16:22:20 kettenis Exp $        */
/*      $NetBSD: pcb.h,v 1.10 2003/10/13 21:46:39 scw Exp $     */

/*
 * Copyright (c) 2001 Matt Thomas <matt@3am-software.com>.
 * Copyright (c) 1994 Mark Brinicombe.
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the RiscBSD team.
 * 4. The name "RiscBSD" nor the name of the author may be used to
 *    endorse or promote products derived from this software without specific
 *    prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY RISCBSD ``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 RISCBSD 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.
 */

#ifndef _ARM_PCB_H_
#define _ARM_PCB_H_

#include <machine/frame.h>

#include <arm/pte.h>
#include <arm/reg.h>

struct trapframe;

struct pcb_arm32 {
        paddr_t pcb32_pagedir;                  /* PT hooks */
        pd_entry_t *pcb32_pl1vec;               /* PTR to vector_base L1 entry*/
        pd_entry_t pcb32_l1vec;                 /* Value to stuff on ctx sw */
        u_int   pcb32_dacr;                     /* Domain Access Control Reg */
        void    *pcb32_cstate;                  /* &pmap->pm_cstate */
        /*
         * WARNING!
         * cpuswitch.S relies on pcb32_r8 being quad-aligned in struct pcb
         * (due to the use of "strd" when compiled for XSCALE)
         */
        u_int   pcb32_r8;                       /* used */
        u_int   pcb32_r9;                       /* used */
        u_int   pcb32_r10;                      /* used */
        u_int   pcb32_r11;                      /* used */
        u_int   pcb32_r12;                      /* used */
        u_int   pcb32_sp;                       /* used */
        u_int   pcb32_lr;
        u_int   pcb32_pc;
        u_int   pcb32_und_sp;
};
#define pcb_pagedir     pcb_un.un_32.pcb32_pagedir
#define pcb_pl1vec      pcb_un.un_32.pcb32_pl1vec
#define pcb_l1vec       pcb_un.un_32.pcb32_l1vec
#define pcb_dacr        pcb_un.un_32.pcb32_dacr
#define pcb_cstate      pcb_un.un_32.pcb32_cstate

/*
 * WARNING!
 * See warning for struct pcb_arm32, above, before changing struct pcb!
 */
struct pcb {
        u_int   pcb_flags;
#define PCB_FPU         0x00000001      /* Process had FPU initialized */
        struct  trapframe *pcb_tf;
        caddr_t pcb_onfault;                    /* On fault handler */
        union   {
                struct  pcb_arm32 un_32;
        } pcb_un;
        struct fpreg pcb_fpstate;       /* Floating Point state */
        struct cpu_info *pcb_fpcpu;
        void    *pcb_tcb;
};

#endif  /* _ARM_PCB_H_ */