L4Re Operating System Framework – Interface and Usage Documentation
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kernel_object.h
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1
5/*
6 * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
7 * Alexander Warg <warg@os.inf.tu-dresden.de>,
8 * Björn Döbel <doebel@os.inf.tu-dresden.de>
9 * economic rights: Technische Universität Dresden (Germany)
10 *
11 * This file is part of TUD:OS and distributed under the terms of the
12 * GNU General Public License 2.
13 * Please see the COPYING-GPL-2 file for details.
14 *
15 * As a special exception, you may use this file as part of a free software
16 * library without restriction. Specifically, if other files instantiate
17 * templates or use macros or inline functions from this file, or you compile
18 * this file and link it with other files to produce an executable, this
19 * file does not by itself cause the resulting executable to be covered by
20 * the GNU General Public License. This exception does not however
21 * invalidate any other reasons why the executable file might be covered by
22 * the GNU General Public License.
23 */
24#ifndef __L4SYS__KERNEL_OBJECT_H__
25#define __L4SYS__KERNEL_OBJECT_H__
26
27#include <l4/sys/types.h>
28#include <l4/sys/compiler.h>
29#include <l4/sys/utcb.h>
30
50l4_invoke_debugger(l4_cap_idx_t obj, l4_msgtag_t tag, l4_utcb_t *utcb) L4_NOTHROW;
51
52
53/**************************************************************************
54 * Implementation
55 **************************************************************************/
56
58#include <l4/sys/ipc.h>
59
60enum L4_kobject_op {
61 L4_KOBJECT_OP_DEC_REFCNT = 0,
62 L4_KOBJECT_OP_REGISTER_IRQ,
63};
64
66l4_kobject_dec_refcnt_u(l4_cap_idx_t obj, l4_mword_t diff, l4_utcb_t *u) L4_NOTHROW;
67
69l4_kobject_dec_refcnt(l4_cap_idx_t obj, l4_mword_t diff) L4_NOTHROW;
70
72l4_kobject_dec_refcnt_u(l4_cap_idx_t obj, l4_mword_t diff, l4_utcb_t *u) L4_NOTHROW
73{
74 l4_msg_regs_t *m = l4_utcb_mr_u(u);
75 m->mr[0] = L4_KOBJECT_OP_DEC_REFCNT;
76 m->mr[1] = diff;
77 return l4_ipc_call(obj, u, l4_msgtag(L4_PROTO_KOBJECT, 2, 0, 0), L4_IPC_NEVER);
78}
79
81l4_kobject_dec_refcnt(l4_cap_idx_t obj, l4_mword_t diff) L4_NOTHROW
82{
83 return l4_kobject_dec_refcnt_u(obj, diff, l4_utcb());
84}
85
86#endif /* ! __L4SYS__KERNEL_OBJECT_H__ */
Low-level kernel debugger functions.
L4 compiler related defines.
signed long l4_mword_t
Signed machine word.
Definition l4int.h:48
unsigned long l4_cap_idx_t
Capability selector type.
Definition types.h:358
l4_msgtag_t l4_ipc_call(l4_cap_idx_t object, l4_utcb_t *utcb, l4_msgtag_t tag, l4_timeout_t timeout) L4_NOTHROW
Object call (usual invocation).
Definition ipc.h:550
l4_msgtag_t l4_msgtag(long label, unsigned words, unsigned items, unsigned flags) L4_NOTHROW
Create a message tag from the specified values.
Definition types.h:427
@ L4_PROTO_KOBJECT
Protocol for messages to a generic kobject.
Definition types.h:62
#define L4_IPC_NEVER
never timeout
Definition __timeout.h:82
struct l4_utcb_t l4_utcb_t
Opaque type for the UTCB.
Definition utcb.h:67
l4_utcb_t * l4_utcb(void) L4_NOTHROW L4_PURE
Get the UTCB address.
Definition utcb.h:340
#define L4_NOTHROW
Mark a function declaration and definition as never throwing an exception.
Definition compiler.h:188
#define L4_INLINE
L4 Inline function attribute.
Definition compiler.h:62
Common L4 ABI Data Types.
Message tag data structure.
Definition types.h:163
Encapsulation of the message-register block in the UTCB.
Definition utcb.h:79
l4_umword_t mr[L4_UTCB_GENERIC_DATA_SIZE]
Message registers.
Definition utcb.h:80