usr/src/sys/hp300/include/pcb.h

/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * %sccs.include.redist.c%
 *
 * from: Utah $Hdr: pcb.h 1.13 89/04/23$
 *
 *      @(#)pcb.h       7.1 (Berkeley) %G%
 */

#ifdef KERNEL
#include "frame.h"
#else
#include <hp300/frame.h>
#endif

/*
 * HP300 process control block
 */
struct pcb
{
        short   pcb_flags;      /* misc. process flags (+0) */
        short   pcb_ps;         /* processor status word (+2) */
        int     pcb_ustp;       /* user segment table pointer (+4) */
        int     pcb_usp;        /* user stack pointer (+8) */
        int     pcb_regs[12];   /* D0-D7, A0-A7 (+C) */
        struct pte *pcb_p0br;   /* P0 base register (+3C) */
        int     pcb_p0lr;       /* P0 length register (+40) */
        struct pte *pcb_p1br;   /* P1 base register (+44) */
        int     pcb_p1lr;       /* P1 length register (+48) */
        int     pcb_szpt;       /* number of pages of user page table (+4C) */
        int     pcb_cmap2;      /* temporary copy PTE (+50) */
        int     *pcb_sswap;     /* saved context for swap return (+54) */
        short   pcb_sigc[12];   /* signal trampoline code (+58) */
        caddr_t pcb_onfault;    /* for copyin/out faults (+70) */
        struct fpframe pcb_fpregs; /* 68881/2 context save area (+74) */
        int     pcb_exec[16];   /* exec structure for core dumps (+1B8) */
        int     pcb_res[2];     /* reserved for future expansion (+1F8) */
};

/* flags */

#define PCB_AST         0x0001  /* async trap pending */
#define PCB_HPUXMMAP    0x0010  /* VA space is multiple mapped */
#define PCB_HPUXTRACE   0x0020  /* being traced by an HPUX process */
#define PCB_HPUXBIN     0x0040  /* loaded from an HPUX format binary */
                                /* note: does NOT imply SHPUX */

#define aston() \
        { \
                u.u_pcb.pcb_flags |= PCB_AST; \
        }

#define astoff() \
        { \
                u.u_pcb.pcb_flags &= ~PCB_AST; \
        }

#define astpend() \
        (u.u_pcb.pcb_flags & PCB_AST)