/* nto-tdep.h - QNX Neutrino target header.

   Copyright (C) 2003, 2007, 2008, 2009 Free Software Foundation, Inc.

   Contributed by QNX Software Systems Ltd.

   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/>.  */

#ifndef _NTO_TDEP_H
#define _NTO_TDEP_H

#include "solist.h"
#include "osabi.h"
#include "regset.h"

/* Target operations defined for Neutrino targets (<target>-nto-tdep.c).  */

struct nto_target_ops
{
/* For 'maintenance debug nto-debug' command.  */
  int internal_debugging;

/* The CPUINFO flags from the remote.  Currently used by
   i386 for fxsave but future proofing other hosts.
   This is initialized in procfs_attach or nto_start_remote
   depending on our host/target.  It would only be invalid
   if we were talking to an older pdebug which didn't support
   the cpuinfo message.  */
  unsigned cpuinfo_flags;

/* True if successfully retrieved cpuinfo from remote.  */
  int cpuinfo_valid;

/* Given a register, return an id that represents the Neutrino
   regset it came from.  If reg == -1 update all regsets.  */
  int (*regset_id) (int);

  void (*supply_gregset) (struct regcache *, char *);

  void (*supply_fpregset) (struct regcache *, char *);

  void (*supply_altregset) (struct regcache *, char *);

/* Given a regset, tell gdb about registers stored in data.  */
  void (*supply_regset) (struct regcache *, int, char *);

/* Given a register and regset, calculate the offset into the regset
   and stuff it into the last argument.  If regno is -1, calculate the
   size of the entire regset.  Returns length of data, -1 if unknown
   regset, 0 if unknown register.  */
  int (*register_area) (struct gdbarch *, int, int, unsigned *);

/* Build the Neutrino register set info into the data buffer.  
   Return -1 if unknown regset, 0 otherwise.  */
  int (*regset_fill) (const struct regcache *, int, char *);

/* Gives the fetch_link_map_offsets function exposure outside of
   solib-svr4.c so that we can override relocate_section_addresses().  */
  struct link_map_offsets *(*fetch_link_map_offsets) (void);

/* Used by nto_elf_osabi_sniffer to determine if we're connected to an
   Neutrino target.  */
  enum gdb_osabi (*is_nto_target) (bfd *abfd);
};

extern struct nto_target_ops current_nto_target;

#define nto_internal_debugging (current_nto_target.internal_debugging)

#define nto_cpuinfo_flags (current_nto_target.cpuinfo_flags)

#define nto_cpuinfo_valid (current_nto_target.cpuinfo_valid)

#define nto_regset_id (current_nto_target.regset_id)

#define nto_supply_gregset (current_nto_target.supply_gregset)

#define nto_supply_fpregset (current_nto_target.supply_fpregset)

#define nto_supply_altregset (current_nto_target.supply_altregset)

#define nto_supply_regset (current_nto_target.supply_regset)

#define nto_register_area (current_nto_target.register_area)

#define nto_regset_fill (current_nto_target.regset_fill)

#define nto_fetch_link_map_offsets \
(current_nto_target.fetch_link_map_offsets)

#define nto_is_nto_target (current_nto_target.is_nto_target)

/* Keep this consistant with neutrino syspage.h.  */
enum
{
  CPUTYPE_X86,
  CPUTYPE_PPC,
  CPUTYPE_MIPS,
  CPUTYPE_SPARE,
  CPUTYPE_ARM,
  CPUTYPE_SH,
  CPUTYPE_UNKNOWN
};

enum
{
  OSTYPE_QNX4,
  OSTYPE_NTO
};

/* These correspond to the DSMSG_* versions in dsmsgs.h. */
enum
{
  NTO_REG_GENERAL,
  NTO_REG_FLOAT,
  NTO_REG_SYSTEM,
  NTO_REG_ALT,
  NTO_REG_END
};

typedef char qnx_reg64[8];

typedef struct _debug_regs
{
  qnx_reg64 padding[1024];
} nto_regset_t;

/* Generic functions in nto-tdep.c.  */

void nto_init_solib_absolute_prefix (void);

char **nto_parse_redirection (char *start_argv[], const char **in,
			      const char **out, const char **err);

void nto_relocate_section_addresses (struct so_list *,
				     struct target_section *);

int nto_map_arch_to_cputype (const char *);

int nto_find_and_open_solib (char *, unsigned, char **);

enum gdb_osabi nto_elf_osabi_sniffer (bfd *abfd);

void nto_initialize_signals (void);

/* Dummy function for initializing nto_target_ops on targets which do
   not define a particular regset.  */
void nto_dummy_supply_regset (struct regcache *regcache, char *regs);

int nto_in_dynsym_resolve_code (CORE_ADDR pc);

#endif