74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
/*
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* \brief Core-specific instance of the VM session interface
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* \author Stefan Kalkowski
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* \date 2012-10-08
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*/
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/*
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* Copyright (C) 2012 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _CORE__INCLUDE__VM_SESSION_COMPONENT_H_
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#define _CORE__INCLUDE__VM_SESSION_COMPONENT_H_
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/* Genode includes */
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#include <base/allocator.h>
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#include <base/rpc_server.h>
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#include <vm_session/vm_session.h>
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#include <dataspace/capability.h>
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/* Core includes */
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#include <dataspace_component.h>
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namespace Genode {
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class Vm_session_component : public Rpc_object<Vm_session>
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{
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private:
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Rpc_entrypoint *_ds_ep;
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Range_allocator *_ram_alloc;
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unsigned long _vm_id;
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void *_vm;
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addr_t _ds_addr;
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Dataspace_component _ds;
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Dataspace_capability _ds_cap;
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static size_t _ds_size() {
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return align_addr(sizeof(Cpu_state_modes),
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get_page_size_log2()); }
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addr_t _alloc_ds(size_t *ram_quota)
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{
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addr_t addr;
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if (_ds_size() > *ram_quota ||
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_ram_alloc->alloc_aligned(_ds_size(), (void**)&addr,
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get_page_size_log2()).is_error())
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throw Root::Quota_exceeded();
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*ram_quota -= _ds_size();
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return addr;
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}
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public:
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Vm_session_component(Rpc_entrypoint *ds_ep,
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Range_allocator *ram_alloc,
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size_t ram_quota);
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~Vm_session_component();
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/**************************
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** Vm session interface **
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**************************/
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Dataspace_capability cpu_state(void) { return _ds_cap; }
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void exception_handler(Signal_context_capability handler);
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void run(void);
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};
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}
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#endif /* _CORE__INCLUDE__VM_SESSION_COMPONENT_H_ */
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