/*
 *  Copyright (C) 2024 Free Software Foundation
 *
 * 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 the program ; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <syscalls.h>
#include <testlib.h>

#include <mach/machine/vm_param.h>
#include <mach/std_types.h>
#include <mach/mach_types.h>
#include <mach/vm_wire.h>
#include <mach/vm_param.h>

#include <device.user.h>
#include <gnumach.user.h>
#include <mach.user.h>
#include <mach_port.user.h>


static void test_memobj()
{
  // this emulates maptime() mapping and reading
  struct mapped_time_value *mtime;
  int64_t secs, usecs;
  mach_port_t device, memobj;
  int err;

  err = device_open (device_priv(), 0, "time", &device);
  ASSERT_RET(err, "device_open");
  err = device_map (device, VM_PROT_READ, 0, sizeof(*mtime), &memobj, 0);
  ASSERT_RET(err, "device_map");
  err = mach_port_deallocate (mach_task_self (), device);
  ASSERT_RET(err, "mach_port_deallocate");
  mtime = 0;
  err = vm_map(mach_task_self (), (vm_address_t *)&mtime, sizeof *mtime, 0, 1,
               memobj, 0, 0, VM_PROT_READ, VM_PROT_READ, VM_INHERIT_NONE);
  ASSERT_RET(err, "vm_map");

  do
    {
      secs = mtime->seconds;
      __sync_synchronize ();
      usecs = mtime->microseconds;
      __sync_synchronize ();
    }
  while (secs != mtime->check_seconds);
  printf("mapped time is %lld.%lld\n",secs, usecs);

  err = mach_port_deallocate (mach_task_self (), memobj);
  ASSERT_RET(err, "mach_port_deallocate");
  err = vm_deallocate(mach_task_self(), (vm_address_t)mtime, sizeof(*mtime));
  ASSERT_RET(err, "vm_deallocate");
}

static void test_wire()
{
  int err = vm_wire_all(host_priv(), mach_task_self(), VM_WIRE_ALL);
  ASSERT_RET(err, "vm_wire_all-ALL");
  err = vm_wire_all(host_priv(), mach_task_self(), VM_WIRE_NONE);
  ASSERT_RET(err, "vm_wire_all-NONE");
  // TODO check that all memory is actually wired or unwired
}

int main(int argc, char *argv[], int envc, char *envp[])
{
  printf("VM_MIN_ADDRESS=0x%p\n", VM_MIN_ADDRESS);
  printf("VM_MAX_ADDRESS=0x%p\n", VM_MAX_ADDRESS);
  test_wire();
  test_memobj();
  return 0;
}