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/* Common things used by the various darwin files

   Copyright (C) 1995, 1996, 1997, 1999, 2000, 2007, 2008, 2009, 2010

   Free Software Foundation, Inc.

   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 __DARWIN_NAT_H__

#define __DARWIN_NAT_H__

#include <mach/mach.h>

#include "gdb_assert.h"

/* Describe the mach exception handling state for a task.  This state is saved

   before being changed and restored when a process is detached.

   For more information on these fields see task_get_exception_ports manual

   page.  */

struct darwin_exception_info

{

  /* Exceptions handled by the port.  */

  exception_mask_t masks[EXC_TYPES_COUNT];

  /* Ports receiving exception messages.  */

  mach_port_t ports[EXC_TYPES_COUNT];

  /* Type of messages sent.  */

  exception_behavior_t behaviors[EXC_TYPES_COUNT];

  /* Type of state to be sent.  */

  thread_state_flavor_t flavors[EXC_TYPES_COUNT];

  /* Number of elements set.  */

  mach_msg_type_number_t count;

};

typedef struct darwin_exception_info darwin_exception_info;

struct darwin_exception_msg

{

  mach_msg_header_t header;

  /* Thread and task taking the exception.  */

  mach_port_t thread_port;

  mach_port_t task_port;

  /* Type of the exception.  */

  exception_type_t ex_type;

  /* Machine dependent details.  */

  mach_msg_type_number_t data_count;

  integer_t ex_data[2];

};

enum darwin_msg_state { DARWIN_RUNNING, DARWIN_STOPPED, DARWIN_MESSAGE };

struct private_thread_info

{

  /* The thread port from a GDB point of view.  */

  thread_t gdb_port;

  /* The thread port from the inferior point of view.  Not to be used inside

     gdb except for get_ada_task_ptid.  */

  thread_t inf_port;

  /* Current message state.

     If the kernel has sent a message it expects a reply and the inferior

     can't be killed before.  */

  enum darwin_msg_state msg_state;

  /* True if this thread is single-stepped.  */

  unsigned char single_step;

  /* True if a signal was manually sent to the thread.  */

  unsigned char signaled;

  /* The last exception received.  */

  struct darwin_exception_msg event;

};

typedef struct private_thread_info darwin_thread_t;

/* Define the threads vector type.  */

DEF_VEC_O (darwin_thread_t);

/* Describe an inferior.  */

struct private_inferior

{

  /* Corresponding task port.  */

  task_t task;

  /* Port which will receive the dead-name notification for the task port.

     This is used to detect the death of the task.  */

  mach_port_t notify_port;

  /* Initial exception handling.  */

  darwin_exception_info exception_info;

  /* Number of messages that have been received but not yet replied.  */

  unsigned int pending_messages;

  /* Set if inferior is not controlled by ptrace(2) but through Mach.  */

  unsigned char no_ptrace;

  /* True if this task is suspended.  */

  unsigned char suspended;

  /* Sorted vector of known threads.  */

  VEC(darwin_thread_t) *threads;

};

typedef struct private_inferior darwin_inferior;

/* Exception port.  */

extern mach_port_t darwin_ex_port;

/* Port set.  */

extern mach_port_t darwin_port_set;

/* A copy of mach_host_self ().  */

extern mach_port_t darwin_host_self;

/* ASSERT_FUNCTION is defined in gdb_assert.h (or not).  */

#ifdef ASSERT_FUNCTION

#define MACH_CHECK_ERROR(ret) \

  mach_check_error (ret, __FILE__, __LINE__, ASSERT_FUNCTION)

#else

#define MACH_CHECK_ERROR(ret) \

  mach_check_error (ret, __FILE__, __LINE__, "??")

#endif

extern void mach_check_error (kern_return_t ret, const char *file,

                              unsigned int line, const char *func);

void darwin_set_sstep (thread_t thread, int enable);

/* This one is called in darwin-nat.c, but needs to be provided by the

   platform specific nat code.  It allows each platform to add platform specific

   stuff to the darwin_ops.  */

extern void darwin_complete_target (struct target_ops *target);

void darwin_check_osabi (darwin_inferior *inf, thread_t thread);

#endif /* __DARWIN_NAT_H__ */