1/**
2 * \file
3 * \brief Implementation of curdispatcher
4 */
5
6/*
7 * Copyright (c) 2007, 2008, 2010, ETH Zurich.
8 * All rights reserved.
9 *
10 * This file is distributed under the terms in the attached LICENSE file.
11 * If you do not find this file, copies can be found by writing to:
12 * ETH Zurich D-INFK, Universitaetstrasse 6, CH-8092 Zurich. Attn: Systems Group.
13 */
14
15#ifndef ARCH_X86_64_BARRELFISH_CURDISPATCHER_H
16#define ARCH_X86_64_BARRELFISH_CURDISPATCHER_H
17
18/**
19 * \brief Returns pointer to current dispatcher, using thread register
20 */
21static inline dispatcher_handle_t curdispatcher(void)
22{
23    dispatcher_handle_t ret;
24
25    __asm("movq %%fs:8, %[ret]" // XXX: assume offsetof(struct thread, disp) == 8
26          : [ret] "=r" (ret));
27
28    return ret;
29}
30
31#endif // ARCH_X86_64_BARRELFISH_CURDISPATCHER_H
32