75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
/*
|
|
* \brief Core-specific instance of the VM session interface
|
|
* \author Stefan Kalkowski
|
|
* \date 2012-10-08
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2012-2013 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 _CORE__INCLUDE__VM_SESSION_COMPONENT_H_
|
|
#define _CORE__INCLUDE__VM_SESSION_COMPONENT_H_
|
|
|
|
/* Genode includes */
|
|
#include <base/allocator.h>
|
|
#include <base/rpc_server.h>
|
|
#include <vm_session/vm_session.h>
|
|
#include <dataspace/capability.h>
|
|
|
|
/* Core includes */
|
|
#include <dataspace_component.h>
|
|
|
|
namespace Genode {
|
|
|
|
class Vm_session_component : public Rpc_object<Vm_session>
|
|
{
|
|
private:
|
|
|
|
Rpc_entrypoint *_ds_ep;
|
|
Range_allocator *_ram_alloc;
|
|
unsigned _vm_id;
|
|
void *_vm;
|
|
addr_t _ds_addr;
|
|
Dataspace_component _ds;
|
|
Dataspace_capability _ds_cap;
|
|
|
|
static size_t _ds_size() {
|
|
return align_addr(sizeof(Cpu_state_modes),
|
|
get_page_size_log2()); }
|
|
|
|
addr_t _alloc_ds(size_t *ram_quota)
|
|
{
|
|
addr_t addr;
|
|
if (_ds_size() > *ram_quota ||
|
|
_ram_alloc->alloc_aligned(_ds_size(), (void**)&addr,
|
|
get_page_size_log2()).is_error())
|
|
throw Root::Quota_exceeded();
|
|
*ram_quota -= _ds_size();
|
|
return addr;
|
|
}
|
|
|
|
public:
|
|
|
|
Vm_session_component(Rpc_entrypoint *ds_ep,
|
|
Range_allocator *ram_alloc,
|
|
size_t ram_quota);
|
|
~Vm_session_component();
|
|
|
|
|
|
/**************************
|
|
** Vm session interface **
|
|
**************************/
|
|
|
|
Dataspace_capability cpu_state(void) { return _ds_cap; }
|
|
void exception_handler(Signal_context_capability handler);
|
|
void run(void);
|
|
void pause(void);
|
|
};
|
|
}
|
|
|
|
#endif /* _CORE__INCLUDE__VM_SESSION_COMPONENT_H_ */
|