66c0c7b6f1
Issue #2451
116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
/*
|
|
* \brief Utilities for creating seL4 kernel objects
|
|
* \author Norman Feske
|
|
* \date 2015-05-08
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2015-2017 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU Affero General Public License version 3.
|
|
*/
|
|
|
|
#ifndef _CORE__INCLUDE__KERNEL_OBJECT_H_
|
|
#define _CORE__INCLUDE__KERNEL_OBJECT_H_
|
|
|
|
/* Genode includes */
|
|
#include <base/exception.h>
|
|
|
|
/* core includes */
|
|
#include <untyped_memory.h>
|
|
#include <initial_untyped_pool.h>
|
|
|
|
namespace Genode {
|
|
|
|
/**
|
|
* Index referring to a slot in a CNode
|
|
*/
|
|
struct Cnode_index : Cap_sel
|
|
{
|
|
explicit Cnode_index(addr_t value) : Cap_sel(value) { }
|
|
|
|
Cnode_index(Cap_sel sel) : Cap_sel(sel.value()) { }
|
|
};
|
|
|
|
|
|
struct Tcb_kobj
|
|
{
|
|
enum { SEL4_TYPE = seL4_TCBObject, SIZE_LOG2 = 12 };
|
|
static char const *name() { return "TCB"; }
|
|
};
|
|
|
|
|
|
struct Endpoint_kobj
|
|
{
|
|
enum { SEL4_TYPE = seL4_EndpointObject, SIZE_LOG2 = 4 };
|
|
static char const *name() { return "endpoint"; }
|
|
};
|
|
|
|
|
|
struct Notification_kobj
|
|
{
|
|
enum { SEL4_TYPE = seL4_NotificationObject, SIZE_LOG2 = 4 };
|
|
static char const *name() { return "notification"; }
|
|
};
|
|
|
|
|
|
struct Cnode_kobj
|
|
{
|
|
enum { SEL4_TYPE = seL4_CapTableObject, SIZE_LOG2 = (CONFIG_WORD_SIZE == 32) ? 4 : 5 };
|
|
static char const *name() { return "cnode"; }
|
|
};
|
|
|
|
struct Retype_untyped_failed : Genode::Exception { };
|
|
|
|
|
|
/**
|
|
* Create kernel object
|
|
*
|
|
* \param KOBJ kernel-object description
|
|
* \param service cap to untyped memory
|
|
* \param dst_cnode_sel CNode selector where to store the cap pointing to
|
|
* the new kernel object
|
|
* \param dst_idx designated index of cap selector within 'dst_cnode'
|
|
* \param size_log2 size of kernel object in bits
|
|
*
|
|
* \throw Phys_alloc_failed
|
|
* \throw Retype_untyped_failed
|
|
*
|
|
* The kernel-object description is a policy type that contains enum
|
|
* definitions for 'SEL4_TYPE' and 'SIZE_LOG2', and a static function
|
|
* 'name' that returns the type name as a char const pointer.
|
|
*/
|
|
template <typename KOBJ>
|
|
static void create(seL4_Untyped const service,
|
|
Cap_sel const dst_cnode_sel,
|
|
Cnode_index dst_idx,
|
|
size_t size_log2 = 0)
|
|
{
|
|
int const type = KOBJ::SEL4_TYPE;
|
|
int const size_bits = size_log2;
|
|
seL4_CNode const root = dst_cnode_sel.value();
|
|
int const node_index = 0;
|
|
int const node_depth = 0;
|
|
int const node_offset = dst_idx.value();
|
|
int const num_objects = 1;
|
|
|
|
int const ret = seL4_Untyped_Retype(service,
|
|
type,
|
|
size_bits,
|
|
root,
|
|
node_index,
|
|
node_depth,
|
|
node_offset,
|
|
num_objects);
|
|
|
|
if (ret != 0) {
|
|
error("seL4_Untyped_RetypeAtOffset (", KOBJ::name(), ") "
|
|
"returned ", ret);
|
|
throw Retype_untyped_failed();
|
|
}
|
|
}
|
|
};
|
|
|
|
#endif /* _CORE__INCLUDE__KERNEL_OBJECT_H_ */
|