ipc_gate.h

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/*
 * (c) 2009-2010 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
 *               Alexander Warg <warg@os.inf.tu-dresden.de>
 *     economic rights: Technische Universität Dresden (Germany)
 *
 * This file is part of TUD:OS and distributed under the terms of the
 * GNU General Public License 2.
 * Please see the COPYING-GPL-2 file for details.
 *
 * As a special exception, you may use this file as part of a free software
 * library without restriction.  Specifically, if other files instantiate
 * templates or use macros or inline functions from this file, or you compile
 * this file and link it with other files to produce an executable, this
 * file does not by itself cause the resulting executable to be covered by
 * the GNU General Public License.  This exception does not however
 * invalidate any other reasons why the executable file might be covered by
 * the GNU General Public License.
 */
 
#pragma once
 
#include <l4/sys/utcb.h>
#include <l4/sys/types.h>
#include <l4/sys/rcv_endpoint.h>
 
L4_INLINE l4_msgtag_t
l4_ipc_gate_get_infos(l4_cap_idx_t gate, l4_umword_t *label);
 
L4_INLINE l4_msgtag_t
l4_ipc_gate_get_infos_u(l4_cap_idx_t gate, l4_umword_t *label, l4_utcb_t *utcb);
 
enum L4_ipc_gate_ops
{
  L4_IPC_GATE_BIND_OP     = 0x10, 
  L4_IPC_GATE_GET_INFO_OP = 0x11, 
};
 
 
/* IMPLEMENTATION -----------------------------------------------------------*/
 
#include <l4/sys/ipc.h>
 
L4_INLINE l4_msgtag_t
l4_ipc_gate_bind_thread_u(l4_cap_idx_t gate,
                          l4_cap_idx_t thread, l4_umword_t label,
                          l4_utcb_t *utcb)
{
  return l4_rcv_ep_bind_thread_u(gate, thread, label, utcb);
}
 
L4_INLINE l4_msgtag_t
l4_ipc_gate_get_infos_u(l4_cap_idx_t gate, l4_umword_t *label, l4_utcb_t *utcb)
{
  l4_msgtag_t tag;
  l4_msg_regs_t *m = l4_utcb_mr_u(utcb);
  m->mr[0] = L4_IPC_GATE_GET_INFO_OP;
  tag = l4_ipc_call(gate, utcb, l4_msgtag(L4_PROTO_KOBJECT, 1, 0, 0),
                    L4_IPC_NEVER);
  if (!l4_msgtag_has_error(tag) && l4_msgtag_label(tag) >= 0)
    *label = m->mr[0];
 
  return tag;
}
 
 
 
L4_INLINE l4_msgtag_t
l4_ipc_gate_bind_thread(l4_cap_idx_t gate, l4_cap_idx_t thread,
                        l4_umword_t label)
{
  return l4_rcv_ep_bind_thread_u(gate, thread, label, l4_utcb());
}
 
L4_INLINE l4_msgtag_t
l4_ipc_gate_get_infos(l4_cap_idx_t gate, l4_umword_t *label)
{
  return l4_ipc_gate_get_infos_u(gate, label, l4_utcb());
}