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/* Mach 3.0 common definitions and global vars.
 
   Copyright 1992, 1993, 1994, 1996 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.  */
 
#ifndef NM_M3_H
#define NM_M3_H
 
#include <mach.h>
#include "regcache.h"
 
/* Mach3 doesn't declare errno in <errno.h>.  */
extern int errno;
 
/* Task port of our debugged inferior. */
 
extern task_t inferior_task;
 
/* Thread port of the current thread in the inferior. */
 
extern thread_t current_thread;
 
/* If nonzero, we must suspend/abort && resume threads
 * when setting or getting the state.
 */
extern int must_suspend_thread;
 
#define PREPARE_TO_PROCEED(select_it) mach3_prepare_to_proceed(select_it)
 
/* Try to get the privileged host port for authentication to machid
 
 * If you can get this, you may debug anything on this host.
 *
 * If you can't, gdb gives it's own task port as the
 * authentication port
 */
#define  mach_privileged_host_port() task_by_pid(-1)
 
/*
 * This is the MIG ID number of the emulator/server bsd_execve() RPC call.
 *
 * It SHOULD never change, but if it does, gdb `run'
 * command won't work until you fix this define.
 * 
 */
#define MIG_EXEC_SYSCALL_ID		101000
 
/* If our_message_port gets a msg with this ID,
 * GDB suspends it's inferior and enters command level.
 * (Useful at least if ^C does not work)
 */
#define GDB_MESSAGE_ID_STOP			0x41151
 
/* wait3 WNOHANG is defined in <sys/wait.h> but
 * for some reason gdb does not want to include
 * that file.
 *
 * If your system defines WNOHANG differently, this has to be changed.
 */
#define WNOHANG 1
 
/* Before storing, we need to read all the registers.  */
 
#define CHILD_PREPARE_TO_STORE() read_register_bytes (0, NULL, REGISTER_BYTES)
 
/* Check if the inferior exists */
#define MACH_ERROR_NO_INFERIOR \
  do if (!MACH_PORT_VALID (inferior_task)) \
  	error ("Inferior task does not exist."); while(0)
 
/* Error handler for mach calls */
#define CHK(str,ret)	\
  do if (ret != KERN_SUCCESS) \
       error ("Gdb %s [%d] %s : %s\n",__FILE__,__LINE__,str, \
	      mach_error_string(ret)); while(0)
 
/* This is from POE9 emulator/emul_stack.h
 */
/*
 * Top of emulator stack holds link and reply port.
 */
struct emul_stack_top
  {
    struct emul_stack_top *link;
    mach_port_t reply_port;
  };
 
#define EMULATOR_STACK_SIZE (4096*4)
 
#define THREAD_ALLOWED_TO_BREAK(mid) mach_thread_for_breakpoint (mid)
 
#define THREAD_PARSE_ID(arg) mach_thread_parse_id (arg)
 
#define THREAD_OUTPUT_ID(mid) mach_thread_output_id (mid)
 
#define ATTACH_TO_THREAD attach_to_thread
 
/* Don't do wait_for_inferior on attach.  */
#define ATTACH_NO_WAIT
 
/* Do Mach 3 dependent operations when ^C or a STOP is requested */
#define DO_QUIT() mach3_quit ()
 
#if 0
/* This is bogus.  It is NOT OK to quit out of target_wait.  */
/* If in mach_msg() and ^C is typed set immediate_quit */
#define REQUEST_QUIT() mach3_request_quit ()
#endif
 
#endif /* NM_M3_H */