/*      $NetBSD: proc.h,v 1.11 2023/10/06 11:45:37 skrll Exp $  */

#ifndef _IA64_PROC_H_
#define _IA64_PROC_H_

#include <machine/frame.h>

/*
 * Process u-area is organised as follows:
 *
 *   -------------------------------------------
 *  |                      |         |    |     |
 *  |  bspstore       sp   | 16bytes | TF | PCB |
 *  |  ---->        <---   |         |    |     |
 *   -------------------------------------------
 *              -----> Higher Addresses
 */

/*
 * Machine-dependent part of the lwp structure for ia64
 */
struct mdlwp {
        u_long  md_flags;
        struct  trapframe *md_tf;       /* trap/syscall registers */
        __volatile int md_astpending;   /* AST pending for this process */
        void *user_stack;
        uint64_t user_stack_size;
};

/*
 * md_flags usage
 * --------------
 * XXX:
 */

struct mdproc {
  /* XXX: Todo */
        void    (*md_syscall)(struct lwp *, u_int64_t, struct trapframe *);
                                        /* Syscall handling function */
};

#define UAREA_PCB_OFFSET        (USPACE - sizeof(struct pcb))
#define UAREA_TF_OFFSET         (UAREA_PCB_OFFSET - sizeof(struct trapframe))
#define UAREA_SP_OFFSET         (UAREA_TF_OFFSET - 16)
#define UAREA_BSPSTORE_OFFSET   (0)
#define UAREA_STACK_SIZE        (USPACE - 16 - sizeof(struct trapframe) - sizeof(struct pcb))

#endif /* _IA64_PROC_H_ */