gdb/armnbsd-nat.c - third_party/binutils-gdb - Git at Google

 /* Native-dependent code for BSD Unix running on ARM's, for GDB.

    Copyright (C) 1988-2016 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 3 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, see <http://www.gnu.org/licenses/>.  */

 #include "defs.h"
 #include "gdbcore.h"
 #include "inferior.h"
 #include "regcache.h"
 #include "target.h"
 #include <sys/types.h>
 #include <sys/ptrace.h>
 #include <machine/reg.h>
 #include <machine/frame.h>

 #include "arm-tdep.h"
 #include "inf-ptrace.h"

 extern int arm_apcs_32;

 static void
 arm_supply_gregset (struct regcache *regcache, struct reg *gregset)
 {
   int regno;
   CORE_ADDR r_pc;

   /* Integer registers.  */
   for (regno = ARM_A1_REGNUM; regno < ARM_SP_REGNUM; regno++)
     regcache_raw_supply (regcache, regno, (char *) &gregset->r[regno]);

   regcache_raw_supply (regcache, ARM_SP_REGNUM,
 		       (char *) &gregset->r_sp);
   regcache_raw_supply (regcache, ARM_LR_REGNUM,
 		       (char *) &gregset->r_lr);
   /* This is ok: we're running native...  */
   r_pc = gdbarch_addr_bits_remove (get_regcache_arch (regcache), gregset->r_pc);
   regcache_raw_supply (regcache, ARM_PC_REGNUM, (char *) &r_pc);

   if (arm_apcs_32)
     regcache_raw_supply (regcache, ARM_PS_REGNUM,
 			 (char *) &gregset->r_cpsr);
   else
     regcache_raw_supply (regcache, ARM_PS_REGNUM,
 			 (char *) &gregset->r_pc);
 }

 static void
 arm_supply_fparegset (struct regcache *regcache, struct fpreg *fparegset)
 {
   int regno;

   for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
     regcache_raw_supply (regcache, regno,
 			 (char *) &fparegset->fpr[regno - ARM_F0_REGNUM]);

   regcache_raw_supply (regcache, ARM_FPS_REGNUM,
 		       (char *) &fparegset->fpr_fpsr);
 }

 static void
 fetch_register (struct regcache *regcache, int regno)
 {
   struct reg inferior_registers;
   int ret;

   ret = ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
 		(PTRACE_TYPE_ARG3) &inferior_registers, 0);

   if (ret < 0)
     {
       warning (_("unable to fetch general register"));
       return;
     }

   switch (regno)
     {
     case ARM_SP_REGNUM:
       regcache_raw_supply (regcache, ARM_SP_REGNUM,
 			   (char *) &inferior_registers.r_sp);
       break;

     case ARM_LR_REGNUM:
       regcache_raw_supply (regcache, ARM_LR_REGNUM,
 			   (char *) &inferior_registers.r_lr);
       break;

     case ARM_PC_REGNUM:
       /* This is ok: we're running native...  */
       inferior_registers.r_pc = gdbarch_addr_bits_remove
 				  (get_regcache_arch (regcache),
 				   inferior_registers.r_pc);
       regcache_raw_supply (regcache, ARM_PC_REGNUM,
 			   (char *) &inferior_registers.r_pc);
       break;

     case ARM_PS_REGNUM:
       if (arm_apcs_32)
 	regcache_raw_supply (regcache, ARM_PS_REGNUM,
 			     (char *) &inferior_registers.r_cpsr);
       else
 	regcache_raw_supply (regcache, ARM_PS_REGNUM,
 			     (char *) &inferior_registers.r_pc);
       break;

     default:
       regcache_raw_supply (regcache, regno,
 			   (char *) &inferior_registers.r[regno]);
       break;
     }
 }

 static void
 fetch_regs (struct regcache *regcache)
 {
   struct reg inferior_registers;
   int ret;
   int regno;

   ret = ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
 		(PTRACE_TYPE_ARG3) &inferior_registers, 0);

   if (ret < 0)
     {
       warning (_("unable to fetch general registers"));
       return;
     }

   arm_supply_gregset (regcache, &inferior_registers);
 }

 static void
 fetch_fp_register (struct regcache *regcache, int regno)
 {
   struct fpreg inferior_fp_registers;
   int ret;

   ret = ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
 		(PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);

   if (ret < 0)
     {
       warning (_("unable to fetch floating-point register"));
       return;
     }

   switch (regno)
     {
     case ARM_FPS_REGNUM:
       regcache_raw_supply (regcache, ARM_FPS_REGNUM,
 			   (char *) &inferior_fp_registers.fpr_fpsr);
       break;

     default:
       regcache_raw_supply (regcache, regno,
 			   (char *) &inferior_fp_registers.fpr[regno - ARM_F0_REGNUM]);
       break;
     }
 }

 static void
 fetch_fp_regs (struct regcache *regcache)
 {
   struct fpreg inferior_fp_registers;
   int ret;
   int regno;

   ret = ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
 		(PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);

   if (ret < 0)
     {
       warning (_("unable to fetch general registers"));
       return;
     }

   arm_supply_fparegset (regcache, &inferior_fp_registers);
 }

 static void
 armnbsd_fetch_registers (struct target_ops *ops,
 			 struct regcache *regcache, int regno)
 {
   if (regno >= 0)
     {
       if (regno < ARM_F0_REGNUM || regno > ARM_FPS_REGNUM)
 	fetch_register (regcache, regno);
       else
 	fetch_fp_register (regcache, regno);
     }
   else
     {
       fetch_regs (regcache);
       fetch_fp_regs (regcache);
     }
 }


 static void
 store_register (const struct regcache *regcache, int regno)
 {
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
   struct reg inferior_registers;
   int ret;

   ret = ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
 		(PTRACE_TYPE_ARG3) &inferior_registers, 0);

   if (ret < 0)
     {
       warning (_("unable to fetch general registers"));
       return;
     }

   switch (regno)
     {
     case ARM_SP_REGNUM:
       regcache_raw_collect (regcache, ARM_SP_REGNUM,
 			    (char *) &inferior_registers.r_sp);
       break;

     case ARM_LR_REGNUM:
       regcache_raw_collect (regcache, ARM_LR_REGNUM,
 			    (char *) &inferior_registers.r_lr);
       break;

     case ARM_PC_REGNUM:
       if (arm_apcs_32)
 	regcache_raw_collect (regcache, ARM_PC_REGNUM,
 			      (char *) &inferior_registers.r_pc);
       else
 	{
 	  unsigned pc_val;

 	  regcache_raw_collect (regcache, ARM_PC_REGNUM,
 				(char *) &pc_val);

 	  pc_val = gdbarch_addr_bits_remove (gdbarch, pc_val);
 	  inferior_registers.r_pc ^= gdbarch_addr_bits_remove
 				       (gdbarch, inferior_registers.r_pc);
 	  inferior_registers.r_pc |= pc_val;
 	}
       break;

     case ARM_PS_REGNUM:
       if (arm_apcs_32)
 	regcache_raw_collect (regcache, ARM_PS_REGNUM,
 			      (char *) &inferior_registers.r_cpsr);
       else
 	{
 	  unsigned psr_val;

 	  regcache_raw_collect (regcache, ARM_PS_REGNUM,
 				(char *) &psr_val);

 	  psr_val ^= gdbarch_addr_bits_remove (gdbarch, psr_val);
 	  inferior_registers.r_pc = gdbarch_addr_bits_remove
 				      (gdbarch, inferior_registers.r_pc);
 	  inferior_registers.r_pc |= psr_val;
 	}
       break;

     default:
       regcache_raw_collect (regcache, regno,
 			    (char *) &inferior_registers.r[regno]);
       break;
     }

   ret = ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
 		(PTRACE_TYPE_ARG3) &inferior_registers, 0);

   if (ret < 0)
     warning (_("unable to write register %d to inferior"), regno);
 }

 static void
 store_regs (const struct regcache *regcache)
 {
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
   struct reg inferior_registers;
   int ret;
   int regno;


   for (regno = ARM_A1_REGNUM; regno < ARM_SP_REGNUM; regno++)
     regcache_raw_collect (regcache, regno,
 			  (char *) &inferior_registers.r[regno]);

   regcache_raw_collect (regcache, ARM_SP_REGNUM,
 			(char *) &inferior_registers.r_sp);
   regcache_raw_collect (regcache, ARM_LR_REGNUM,
 			(char *) &inferior_registers.r_lr);

   if (arm_apcs_32)
     {
       regcache_raw_collect (regcache, ARM_PC_REGNUM,
 			    (char *) &inferior_registers.r_pc);
       regcache_raw_collect (regcache, ARM_PS_REGNUM,
 			    (char *) &inferior_registers.r_cpsr);
     }
   else
     {
       unsigned pc_val;
       unsigned psr_val;

       regcache_raw_collect (regcache, ARM_PC_REGNUM,
 			    (char *) &pc_val);
       regcache_raw_collect (regcache, ARM_PS_REGNUM,
 			    (char *) &psr_val);

       pc_val = gdbarch_addr_bits_remove (gdbarch, pc_val);
       psr_val ^= gdbarch_addr_bits_remove (gdbarch, psr_val);

       inferior_registers.r_pc = pc_val | psr_val;
     }

   ret = ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
 		(PTRACE_TYPE_ARG3) &inferior_registers, 0);

   if (ret < 0)
     warning (_("unable to store general registers"));
 }

 static void
 store_fp_register (const struct regcache *regcache, int regno)
 {
   struct fpreg inferior_fp_registers;
   int ret;

   ret = ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
 		(PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);

   if (ret < 0)
     {
       warning (_("unable to fetch floating-point registers"));
       return;
     }

   switch (regno)
     {
     case ARM_FPS_REGNUM:
       regcache_raw_collect (regcache, ARM_FPS_REGNUM,
 			    (char *) &inferior_fp_registers.fpr_fpsr);
       break;

     default:
       regcache_raw_collect (regcache, regno,
 			    (char *) &inferior_fp_registers.fpr[regno - ARM_F0_REGNUM]);
       break;
     }

   ret = ptrace (PT_SETFPREGS, ptid_get_pid (inferior_ptid),
 		(PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);

   if (ret < 0)
     warning (_("unable to write register %d to inferior"), regno);
 }

 static void
 store_fp_regs (const struct regcache *regcache)
 {
   struct fpreg inferior_fp_registers;
   int ret;
   int regno;


   for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
     regcache_raw_collect (regcache, regno,
 			  (char *) &inferior_fp_registers.fpr[regno - ARM_F0_REGNUM]);

   regcache_raw_collect (regcache, ARM_FPS_REGNUM,
 			(char *) &inferior_fp_registers.fpr_fpsr);

   ret = ptrace (PT_SETFPREGS, ptid_get_pid (inferior_ptid),
 		(PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);

   if (ret < 0)
     warning (_("unable to store floating-point registers"));
 }

 static void
 armnbsd_store_registers (struct target_ops *ops,
 			 struct regcache *regcache, int regno)
 {
   if (regno >= 0)
     {
       if (regno < ARM_F0_REGNUM || regno > ARM_FPS_REGNUM)
 	store_register (regcache, regno);
       else
 	store_fp_register (regcache, regno);
     }
   else
     {
       store_regs (regcache);
       store_fp_regs (regcache);
     }
 }

 struct md_core
 {
   struct reg intreg;
   struct fpreg freg;
 };

 static void
 fetch_core_registers (struct regcache *regcache,
 		      char *core_reg_sect, unsigned core_reg_size,
 		      int which, CORE_ADDR ignore)
 {
   struct md_core *core_reg = (struct md_core *) core_reg_sect;
   int regno;
   CORE_ADDR r_pc;

   arm_supply_gregset (regcache, &core_reg->intreg);
   arm_supply_fparegset (regcache, &core_reg->freg);
 }

 static void
 fetch_elfcore_registers (struct regcache *regcache,
 			 char *core_reg_sect, unsigned core_reg_size,
 			 int which, CORE_ADDR ignore)
 {
   struct reg gregset;
   struct fpreg fparegset;

   switch (which)
     {
     case 0:	/* Integer registers.  */
       if (core_reg_size != sizeof (struct reg))
 	warning (_("wrong size of register set in core file"));
       else
 	{
 	  /* The memcpy may be unnecessary, but we can't really be sure
 	     of the alignment of the data in the core file.  */
 	  memcpy (&gregset, core_reg_sect, sizeof (gregset));
 	  arm_supply_gregset (regcache, &gregset);
 	}
       break;

     case 2:
       if (core_reg_size != sizeof (struct fpreg))
 	warning (_("wrong size of FPA register set in core file"));
       else
 	{
 	  /* The memcpy may be unnecessary, but we can't really be sure
 	     of the alignment of the data in the core file.  */
 	  memcpy (&fparegset, core_reg_sect, sizeof (fparegset));
 	  arm_supply_fparegset (regcache, &fparegset);
 	}
       break;

     default:
       /* Don't know what kind of register request this is; just ignore it.  */
       break;
     }
 }

 static struct core_fns arm_netbsd_core_fns =
 {
   bfd_target_unknown_flavour,		/* core_flovour.  */
   default_check_format,			/* check_format.  */
   default_core_sniffer,			/* core_sniffer.  */
   fetch_core_registers,			/* core_read_registers.  */
   NULL
 };

 static struct core_fns arm_netbsd_elfcore_fns =
 {
   bfd_target_elf_flavour,		/* core_flovour.  */
   default_check_format,			/* check_format.  */
   default_core_sniffer,			/* core_sniffer.  */
   fetch_elfcore_registers,		/* core_read_registers.  */
   NULL
 };

 void
 _initialize_arm_netbsd_nat (void)
 {
   struct target_ops *t;

   t = inf_ptrace_target ();
   t->to_fetch_registers = armnbsd_fetch_registers;
   t->to_store_registers = armnbsd_store_registers;
   add_target (t);

   deprecated_add_core_fns (&arm_netbsd_core_fns);
   deprecated_add_core_fns (&arm_netbsd_elfcore_fns);
 }
	/* Native-dependent code for BSD Unix running on ARM's, for GDB.

	Copyright (C) 1988-2016 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 3 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, see <http://www.gnu.org/licenses/>. */

	#include "defs.h"
	#include "gdbcore.h"
	#include "inferior.h"
	#include "regcache.h"
	#include "target.h"
	#include <sys/types.h>
	#include <sys/ptrace.h>
	#include <machine/reg.h>
	#include <machine/frame.h>

	#include "arm-tdep.h"
	#include "inf-ptrace.h"

	extern int arm_apcs_32;

	static void
	arm_supply_gregset (struct regcache regcache, struct reg gregset)
	{
	int regno;
	CORE_ADDR r_pc;

	/* Integer registers. */
	for (regno = ARM_A1_REGNUM; regno < ARM_SP_REGNUM; regno++)
	regcache_raw_supply (regcache, regno, (char *) &gregset->r[regno]);

	regcache_raw_supply (regcache, ARM_SP_REGNUM,
	(char *) &gregset->r_sp);
	regcache_raw_supply (regcache, ARM_LR_REGNUM,
	(char *) &gregset->r_lr);
	/* This is ok: we're running native... */
	r_pc = gdbarch_addr_bits_remove (get_regcache_arch (regcache), gregset->r_pc);
	regcache_raw_supply (regcache, ARM_PC_REGNUM, (char *) &r_pc);

	if (arm_apcs_32)
	regcache_raw_supply (regcache, ARM_PS_REGNUM,
	(char *) &gregset->r_cpsr);
	else
	regcache_raw_supply (regcache, ARM_PS_REGNUM,
	(char *) &gregset->r_pc);
	}

	static void
	arm_supply_fparegset (struct regcache regcache, struct fpreg fparegset)
	{
	int regno;

	for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
	regcache_raw_supply (regcache, regno,
	(char *) &fparegset->fpr[regno - ARM_F0_REGNUM]);

	regcache_raw_supply (regcache, ARM_FPS_REGNUM,
	(char *) &fparegset->fpr_fpsr);
	}

	static void
	fetch_register (struct regcache *regcache, int regno)
	{
	struct reg inferior_registers;
	int ret;

	ret = ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
	(PTRACE_TYPE_ARG3) &inferior_registers, 0);

	if (ret < 0)
	{
	warning (_("unable to fetch general register"));
	return;
	}

	switch (regno)
	{
	case ARM_SP_REGNUM:
	regcache_raw_supply (regcache, ARM_SP_REGNUM,
	(char *) &inferior_registers.r_sp);
	break;

	case ARM_LR_REGNUM:
	regcache_raw_supply (regcache, ARM_LR_REGNUM,
	(char *) &inferior_registers.r_lr);
	break;

	case ARM_PC_REGNUM:
	/* This is ok: we're running native... */
	inferior_registers.r_pc = gdbarch_addr_bits_remove
	(get_regcache_arch (regcache),
	inferior_registers.r_pc);
	regcache_raw_supply (regcache, ARM_PC_REGNUM,
	(char *) &inferior_registers.r_pc);
	break;

	case ARM_PS_REGNUM:
	if (arm_apcs_32)
	regcache_raw_supply (regcache, ARM_PS_REGNUM,
	(char *) &inferior_registers.r_cpsr);
	else
	regcache_raw_supply (regcache, ARM_PS_REGNUM,
	(char *) &inferior_registers.r_pc);
	break;

	default:
	regcache_raw_supply (regcache, regno,
	(char *) &inferior_registers.r[regno]);
	break;
	}
	}

	static void
	fetch_regs (struct regcache *regcache)
	{
	struct reg inferior_registers;
	int ret;
	int regno;

	ret = ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
	(PTRACE_TYPE_ARG3) &inferior_registers, 0);

	if (ret < 0)
	{
	warning (_("unable to fetch general registers"));
	return;
	}

	arm_supply_gregset (regcache, &inferior_registers);
	}

	static void
	fetch_fp_register (struct regcache *regcache, int regno)
	{
	struct fpreg inferior_fp_registers;
	int ret;

	ret = ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
	(PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);

	if (ret < 0)
	{
	warning (_("unable to fetch floating-point register"));
	return;
	}

	switch (regno)
	{
	case ARM_FPS_REGNUM:
	regcache_raw_supply (regcache, ARM_FPS_REGNUM,
	(char *) &inferior_fp_registers.fpr_fpsr);
	break;

	default:
	regcache_raw_supply (regcache, regno,
	(char *) &inferior_fp_registers.fpr[regno - ARM_F0_REGNUM]);
	break;
	}
	}

	static void
	fetch_fp_regs (struct regcache *regcache)
	{
	struct fpreg inferior_fp_registers;
	int ret;
	int regno;

	ret = ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
	(PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);

	if (ret < 0)
	{
	warning (_("unable to fetch general registers"));
	return;
	}

	arm_supply_fparegset (regcache, &inferior_fp_registers);
	}

	static void
	armnbsd_fetch_registers (struct target_ops *ops,
	struct regcache *regcache, int regno)
	{
	if (regno >= 0)
	{
	if (regno < ARM_F0_REGNUM \|\| regno > ARM_FPS_REGNUM)
	fetch_register (regcache, regno);
	else
	fetch_fp_register (regcache, regno);
	}
	else
	{
	fetch_regs (regcache);
	fetch_fp_regs (regcache);
	}
	}


	static void
	store_register (const struct regcache *regcache, int regno)
	{
	struct gdbarch *gdbarch = get_regcache_arch (regcache);
	struct reg inferior_registers;
	int ret;

	ret = ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
	(PTRACE_TYPE_ARG3) &inferior_registers, 0);

	if (ret < 0)
	{
	warning (_("unable to fetch general registers"));
	return;
	}

	switch (regno)
	{
	case ARM_SP_REGNUM:
	regcache_raw_collect (regcache, ARM_SP_REGNUM,
	(char *) &inferior_registers.r_sp);
	break;

	case ARM_LR_REGNUM:
	regcache_raw_collect (regcache, ARM_LR_REGNUM,
	(char *) &inferior_registers.r_lr);
	break;

	case ARM_PC_REGNUM:
	if (arm_apcs_32)
	regcache_raw_collect (regcache, ARM_PC_REGNUM,
	(char *) &inferior_registers.r_pc);
	else
	{
	unsigned pc_val;

	regcache_raw_collect (regcache, ARM_PC_REGNUM,
	(char *) &pc_val);

	pc_val = gdbarch_addr_bits_remove (gdbarch, pc_val);
	inferior_registers.r_pc ^= gdbarch_addr_bits_remove
	(gdbarch, inferior_registers.r_pc);
	inferior_registers.r_pc \|= pc_val;
	}
	break;

	case ARM_PS_REGNUM:
	if (arm_apcs_32)
	regcache_raw_collect (regcache, ARM_PS_REGNUM,
	(char *) &inferior_registers.r_cpsr);
	else
	{
	unsigned psr_val;

	regcache_raw_collect (regcache, ARM_PS_REGNUM,
	(char *) &psr_val);

	psr_val ^= gdbarch_addr_bits_remove (gdbarch, psr_val);
	inferior_registers.r_pc = gdbarch_addr_bits_remove
	(gdbarch, inferior_registers.r_pc);
	inferior_registers.r_pc \|= psr_val;
	}
	break;

	default:
	regcache_raw_collect (regcache, regno,
	(char *) &inferior_registers.r[regno]);
	break;
	}

	ret = ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
	(PTRACE_TYPE_ARG3) &inferior_registers, 0);

	if (ret < 0)
	warning (_("unable to write register %d to inferior"), regno);
	}

	static void
	store_regs (const struct regcache *regcache)
	{
	struct gdbarch *gdbarch = get_regcache_arch (regcache);
	struct reg inferior_registers;
	int ret;
	int regno;


	for (regno = ARM_A1_REGNUM; regno < ARM_SP_REGNUM; regno++)
	regcache_raw_collect (regcache, regno,
	(char *) &inferior_registers.r[regno]);

	regcache_raw_collect (regcache, ARM_SP_REGNUM,
	(char *) &inferior_registers.r_sp);
	regcache_raw_collect (regcache, ARM_LR_REGNUM,
	(char *) &inferior_registers.r_lr);

	if (arm_apcs_32)
	{
	regcache_raw_collect (regcache, ARM_PC_REGNUM,
	(char *) &inferior_registers.r_pc);
	regcache_raw_collect (regcache, ARM_PS_REGNUM,
	(char *) &inferior_registers.r_cpsr);
	}
	else
	{
	unsigned pc_val;
	unsigned psr_val;

	regcache_raw_collect (regcache, ARM_PC_REGNUM,
	(char *) &pc_val);
	regcache_raw_collect (regcache, ARM_PS_REGNUM,
	(char *) &psr_val);

	pc_val = gdbarch_addr_bits_remove (gdbarch, pc_val);
	psr_val ^= gdbarch_addr_bits_remove (gdbarch, psr_val);

	inferior_registers.r_pc = pc_val \| psr_val;
	}

	ret = ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
	(PTRACE_TYPE_ARG3) &inferior_registers, 0);

	if (ret < 0)
	warning (_("unable to store general registers"));
	}

	static void
	store_fp_register (const struct regcache *regcache, int regno)
	{
	struct fpreg inferior_fp_registers;
	int ret;

	ret = ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
	(PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);

	if (ret < 0)
	{
	warning (_("unable to fetch floating-point registers"));
	return;
	}

	switch (regno)
	{
	case ARM_FPS_REGNUM:
	regcache_raw_collect (regcache, ARM_FPS_REGNUM,
	(char *) &inferior_fp_registers.fpr_fpsr);
	break;

	default:
	regcache_raw_collect (regcache, regno,
	(char *) &inferior_fp_registers.fpr[regno - ARM_F0_REGNUM]);
	break;
	}

	ret = ptrace (PT_SETFPREGS, ptid_get_pid (inferior_ptid),
	(PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);

	if (ret < 0)
	warning (_("unable to write register %d to inferior"), regno);
	}

	static void
	store_fp_regs (const struct regcache *regcache)
	{
	struct fpreg inferior_fp_registers;
	int ret;
	int regno;


	for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
	regcache_raw_collect (regcache, regno,
	(char *) &inferior_fp_registers.fpr[regno - ARM_F0_REGNUM]);

	regcache_raw_collect (regcache, ARM_FPS_REGNUM,
	(char *) &inferior_fp_registers.fpr_fpsr);

	ret = ptrace (PT_SETFPREGS, ptid_get_pid (inferior_ptid),
	(PTRACE_TYPE_ARG3) &inferior_fp_registers, 0);

	if (ret < 0)
	warning (_("unable to store floating-point registers"));
	}

	static void
	armnbsd_store_registers (struct target_ops *ops,
	struct regcache *regcache, int regno)
	{
	if (regno >= 0)
	{
	if (regno < ARM_F0_REGNUM \|\| regno > ARM_FPS_REGNUM)
	store_register (regcache, regno);
	else
	store_fp_register (regcache, regno);
	}
	else
	{
	store_regs (regcache);
	store_fp_regs (regcache);
	}
	}

	struct md_core
	{
	struct reg intreg;
	struct fpreg freg;
	};

	static void
	fetch_core_registers (struct regcache *regcache,
	char *core_reg_sect, unsigned core_reg_size,
	int which, CORE_ADDR ignore)
	{
	struct md_core core_reg = (struct md_core ) core_reg_sect;
	int regno;
	CORE_ADDR r_pc;

	arm_supply_gregset (regcache, &core_reg->intreg);
	arm_supply_fparegset (regcache, &core_reg->freg);
	}

	static void
	fetch_elfcore_registers (struct regcache *regcache,
	char *core_reg_sect, unsigned core_reg_size,
	int which, CORE_ADDR ignore)
	{
	struct reg gregset;
	struct fpreg fparegset;

	switch (which)
	{
	case 0: /* Integer registers. */
	if (core_reg_size != sizeof (struct reg))
	warning (_("wrong size of register set in core file"));
	else
	{
	/* The memcpy may be unnecessary, but we can't really be sure
	of the alignment of the data in the core file. */
	memcpy (&gregset, core_reg_sect, sizeof (gregset));
	arm_supply_gregset (regcache, &gregset);
	}
	break;

	case 2:
	if (core_reg_size != sizeof (struct fpreg))
	warning (_("wrong size of FPA register set in core file"));
	else
	{
	/* The memcpy may be unnecessary, but we can't really be sure
	of the alignment of the data in the core file. */
	memcpy (&fparegset, core_reg_sect, sizeof (fparegset));
	arm_supply_fparegset (regcache, &fparegset);
	}
	break;

	default:
	/* Don't know what kind of register request this is; just ignore it. */
	break;
	}
	}

	static struct core_fns arm_netbsd_core_fns =
	{
	bfd_target_unknown_flavour, /* core_flovour. */
	default_check_format, /* check_format. */
	default_core_sniffer, /* core_sniffer. */
	fetch_core_registers, /* core_read_registers. */
	NULL
	};

	static struct core_fns arm_netbsd_elfcore_fns =
	{
	bfd_target_elf_flavour, /* core_flovour. */
	default_check_format, /* check_format. */
	default_core_sniffer, /* core_sniffer. */
	fetch_elfcore_registers, /* core_read_registers. */
	NULL
	};

	void
	_initialize_arm_netbsd_nat (void)
	{
	struct target_ops *t;

	t = inf_ptrace_target ();
	t->to_fetch_registers = armnbsd_fetch_registers;
	t->to_store_registers = armnbsd_store_registers;
	add_target (t);

	deprecated_add_core_fns (&arm_netbsd_core_fns);
	deprecated_add_core_fns (&arm_netbsd_elfcore_fns);
	}