74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
/*
|
|
* \brief Kernel-specific capability helpers and definitions
|
|
* \author Norman Feske
|
|
* \date 2016-06-01
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2016 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef _INCLUDE__FOC__NATIVE_CAPABILITY_H_
|
|
#define _INCLUDE__FOC__NATIVE_CAPABILITY_H_
|
|
|
|
namespace Fiasco {
|
|
#include <l4/sys/consts.h>
|
|
#include <l4/sys/types.h>
|
|
#include <l4/sys/utcb.h>
|
|
#include <l4/sys/task.h>
|
|
|
|
enum Cap_selectors {
|
|
|
|
/*********************************************
|
|
** Capability selectors controlled by core **
|
|
*********************************************/
|
|
|
|
TASK_CAP = L4_BASE_TASK_CAP, /* use the same task cap selector
|
|
like L4Re for compatibility in
|
|
L4Linux */
|
|
|
|
/*
|
|
* To not clash with other L4Re cap selector constants (e.g.: L4Linux)
|
|
* leave the following selectors (2-7) empty
|
|
*/
|
|
|
|
PARENT_CAP = 0x8UL << L4_CAP_SHIFT, /* cap to parent session */
|
|
|
|
/*
|
|
* Each thread has a designated slot in the core controlled cap
|
|
* selector area, where its ipc gate capability (for server threads),
|
|
* its irq capability (for locks), and the capability to its pager
|
|
* gate are stored
|
|
*/
|
|
THREAD_AREA_BASE = 0x9UL << L4_CAP_SHIFT, /* offset to thread area */
|
|
THREAD_AREA_SLOT = 0x3UL << L4_CAP_SHIFT, /* size of one thread slot */
|
|
THREAD_GATE_CAP = 0, /* offset to the ipc gate
|
|
cap selector in the slot */
|
|
THREAD_PAGER_CAP = 0x1UL << L4_CAP_SHIFT, /* offset to the pager
|
|
cap selector in the slot */
|
|
THREAD_IRQ_CAP = 0x2UL << L4_CAP_SHIFT, /* offset to the irq cap
|
|
selector in the slot */
|
|
MAIN_THREAD_CAP = THREAD_AREA_BASE + THREAD_GATE_CAP, /* shortcut to the
|
|
main thread's
|
|
gate cap */
|
|
|
|
|
|
/*********************************************************
|
|
** Capability seclectors controlled by the task itself **
|
|
*********************************************************/
|
|
|
|
USER_BASE_CAP = 0x200UL << L4_CAP_SHIFT,
|
|
};
|
|
|
|
struct Capability
|
|
{
|
|
static bool valid(l4_cap_idx_t idx) {
|
|
return !(idx & L4_INVALID_CAP_BIT) && idx != 0; }
|
|
};
|
|
}
|
|
|
|
#endif /* _INCLUDE__FOC__NATIVE_CAPABILITY_H_ */
|