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/* Native-dependent code for NetBSD/i386, for GDB.

   Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001

   Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 2 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place - Suite 330,

   Boston, MA 02111-1307, USA.  */

#include "defs.h"

#include <sys/types.h>

#include <sys/ptrace.h>

#include <machine/reg.h>

#include <machine/frame.h>

#include "inferior.h"

#include "gdbcore.h" /* for registers_fetched() */

#include "regcache.h"

#define RF(dst, src) \

        memcpy(&registers[REGISTER_BYTE(dst)], &src, sizeof(src))

#define RS(src, dst) \

        memcpy(&dst, &registers[REGISTER_BYTE(src)], sizeof(dst))

struct env387

  {

    unsigned short control;

    unsigned short r0;

    unsigned short status;

    unsigned short r1;

    unsigned short tag;

    unsigned short r2;

    unsigned long eip;

    unsigned short code_seg;

    unsigned short opcode;

    unsigned long operand;

    unsigned short operand_seg;

    unsigned short r3;

    unsigned char regs[8][10];

  };

void

fetch_inferior_registers (int regno)

{

  struct reg inferior_registers;

  struct env387 inferior_fpregisters;

  ptrace (PT_GETREGS, PIDGET (inferior_ptid),

          (PTRACE_ARG3_TYPE) &inferior_registers, 0);

  ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),

          (PTRACE_ARG3_TYPE) &inferior_fpregisters, 0);

  RF ( 0, inferior_registers.r_eax);

  RF ( 1, inferior_registers.r_ecx);

  RF ( 2, inferior_registers.r_edx);

  RF ( 3, inferior_registers.r_ebx);

  RF ( 4, inferior_registers.r_esp);

  RF ( 5, inferior_registers.r_ebp);

  RF ( 6, inferior_registers.r_esi);

  RF ( 7, inferior_registers.r_edi);

  RF ( 8, inferior_registers.r_eip);

  RF ( 9, inferior_registers.r_eflags);

  RF (10, inferior_registers.r_cs);

  RF (11, inferior_registers.r_ss);

  RF (12, inferior_registers.r_ds);

  RF (13, inferior_registers.r_es);

  RF (14, inferior_registers.r_fs);

  RF (15, inferior_registers.r_gs);

  RF (FP0_REGNUM,     inferior_fpregisters.regs[0]);

  RF (FP0_REGNUM + 1, inferior_fpregisters.regs[1]);

  RF (FP0_REGNUM + 2, inferior_fpregisters.regs[2]);

  RF (FP0_REGNUM + 3, inferior_fpregisters.regs[3]);

  RF (FP0_REGNUM + 4, inferior_fpregisters.regs[4]);

  RF (FP0_REGNUM + 5, inferior_fpregisters.regs[5]);

  RF (FP0_REGNUM + 6, inferior_fpregisters.regs[6]);

  RF (FP0_REGNUM + 7, inferior_fpregisters.regs[7]);

  RF (FCTRL_REGNUM,   inferior_fpregisters.control);

  RF (FSTAT_REGNUM,   inferior_fpregisters.status);

  RF (FTAG_REGNUM,    inferior_fpregisters.tag);

  RF (FCS_REGNUM,     inferior_fpregisters.code_seg);

  RF (FCOFF_REGNUM,   inferior_fpregisters.eip);

  RF (FDS_REGNUM,     inferior_fpregisters.operand_seg);

  RF (FDOFF_REGNUM,   inferior_fpregisters.operand);

  RF (FOP_REGNUM,     inferior_fpregisters.opcode);

  registers_fetched ();

}

void

store_inferior_registers (int regno)

{

  struct reg inferior_registers;

  struct env387 inferior_fpregisters;

  RS ( 0, inferior_registers.r_eax);

  RS ( 1, inferior_registers.r_ecx);

  RS ( 2, inferior_registers.r_edx);

  RS ( 3, inferior_registers.r_ebx);

  RS ( 4, inferior_registers.r_esp);

  RS ( 5, inferior_registers.r_ebp);

  RS ( 6, inferior_registers.r_esi);

  RS ( 7, inferior_registers.r_edi);

  RS ( 8, inferior_registers.r_eip);

  RS ( 9, inferior_registers.r_eflags);

  RS (10, inferior_registers.r_cs);

  RS (11, inferior_registers.r_ss);

  RS (12, inferior_registers.r_ds);

  RS (13, inferior_registers.r_es);

  RS (14, inferior_registers.r_fs);

  RS (15, inferior_registers.r_gs);

  RS (FP0_REGNUM,     inferior_fpregisters.regs[0]);

  RS (FP0_REGNUM + 1, inferior_fpregisters.regs[1]);

  RS (FP0_REGNUM + 2, inferior_fpregisters.regs[2]);

  RS (FP0_REGNUM + 3, inferior_fpregisters.regs[3]);

  RS (FP0_REGNUM + 4, inferior_fpregisters.regs[4]);

  RS (FP0_REGNUM + 5, inferior_fpregisters.regs[5]);

  RS (FP0_REGNUM + 6, inferior_fpregisters.regs[6]);

  RS (FP0_REGNUM + 7, inferior_fpregisters.regs[7]);

  RS (FCTRL_REGNUM,   inferior_fpregisters.control);

  RS (FSTAT_REGNUM,   inferior_fpregisters.status);

  RS (FTAG_REGNUM,    inferior_fpregisters.tag);

  RS (FCS_REGNUM,     inferior_fpregisters.code_seg);

  RS (FCOFF_REGNUM,   inferior_fpregisters.eip);

  RS (FDS_REGNUM,     inferior_fpregisters.operand_seg);

  RS (FDOFF_REGNUM,   inferior_fpregisters.operand);

  RS (FOP_REGNUM,     inferior_fpregisters.opcode);

  ptrace (PT_SETREGS, PIDGET (inferior_ptid),

          (PTRACE_ARG3_TYPE) &inferior_registers, 0);

  ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),

          (PTRACE_ARG3_TYPE) &inferior_fpregisters, 0);

}

struct md_core

{

  struct reg intreg;

  struct env387 freg;

};

static void

fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,

                      CORE_ADDR ignore)

{

  struct md_core *core_reg = (struct md_core *) core_reg_sect;

  /* integer registers */

  memcpy (&registers[REGISTER_BYTE (0)], &core_reg->intreg,

          sizeof (struct reg));

  /* floating point registers */

  RF (FP0_REGNUM,     core_reg->freg.regs[0]);

  RF (FP0_REGNUM + 1, core_reg->freg.regs[1]);

  RF (FP0_REGNUM + 2, core_reg->freg.regs[2]);

  RF (FP0_REGNUM + 3, core_reg->freg.regs[3]);

  RF (FP0_REGNUM + 4, core_reg->freg.regs[4]);

  RF (FP0_REGNUM + 5, core_reg->freg.regs[5]);

  RF (FP0_REGNUM + 6, core_reg->freg.regs[6]);

  RF (FP0_REGNUM + 7, core_reg->freg.regs[7]);

  RF (FCTRL_REGNUM,   core_reg->freg.control);

  RF (FSTAT_REGNUM,   core_reg->freg.status);

  RF (FTAG_REGNUM,    core_reg->freg.tag);

  RF (FCS_REGNUM,     core_reg->freg.code_seg);

  RF (FCOFF_REGNUM,   core_reg->freg.eip);

  RF (FDS_REGNUM,     core_reg->freg.operand_seg);

  RF (FDOFF_REGNUM,   core_reg->freg.operand);

  RF (FOP_REGNUM,     core_reg->freg.opcode);

  registers_fetched ();

}

/* Register that we are able to handle i386nbsd core file formats.

   FIXME: is this really bfd_target_unknown_flavour? */

static struct core_fns i386nbsd_core_fns =

{

  bfd_target_unknown_flavour,           /* core_flavour */

  default_check_format,                 /* check_format */

  default_core_sniffer,                 /* core_sniffer */

  fetch_core_registers,                 /* core_read_registers */

  NULL                                  /* next */

};

void

_initialize_i386nbsd_nat (void)

{

  add_core_fns (&i386nbsd_core_fns);

}