b32af4e0a4
Instead of handing over object ids to the kernel, which has to find them in object pools then, core can simply use object pointers to reference kernel objects. Ref #1443
352 lines
10 KiB
C++
352 lines
10 KiB
C++
/*
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* \brief Parts of the kernel interface that are restricted to core
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* \author Martin stein
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* \date 2014-03-15
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*/
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/*
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* Copyright (C) 2014 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 _KERNEL__CORE_INTERFACE_H_
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#define _KERNEL__CORE_INTERFACE_H_
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/* base-hw includes */
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#include <kernel/interface.h>
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namespace Kernel
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{
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class Pd;
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class Thread;
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class Signal_receiver;
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class Signal_context;
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class Vm;
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addr_t mode_transition_base();
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size_t mode_transition_size();
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size_t thread_size();
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size_t pd_size();
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unsigned pd_alignment_log2();
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size_t signal_context_size();
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size_t signal_receiver_size();
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/**
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* Kernel names of the kernel calls
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*/
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constexpr Call_arg call_id_new_thread() { return 14; }
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constexpr Call_arg call_id_delete_thread() { return 15; }
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constexpr Call_arg call_id_start_thread() { return 16; }
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constexpr Call_arg call_id_resume_thread() { return 17; }
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constexpr Call_arg call_id_access_thread_regs() { return 18; }
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constexpr Call_arg call_id_route_thread_event() { return 19; }
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constexpr Call_arg call_id_update_pd() { return 20; }
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constexpr Call_arg call_id_new_pd() { return 21; }
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constexpr Call_arg call_id_delete_pd() { return 22; }
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constexpr Call_arg call_id_new_signal_receiver() { return 23; }
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constexpr Call_arg call_id_new_signal_context() { return 24; }
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constexpr Call_arg call_id_delete_signal_context() { return 25; }
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constexpr Call_arg call_id_delete_signal_receiver() { return 26; }
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constexpr Call_arg call_id_new_vm() { return 27; }
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constexpr Call_arg call_id_run_vm() { return 28; }
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constexpr Call_arg call_id_pause_vm() { return 29; }
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constexpr Call_arg call_id_pause_thread() { return 30; }
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constexpr Call_arg call_id_delete_vm() { return 31; }
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/**
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* Create a domain
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*
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* \param dst appropriate memory donation for the kernel object
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* \param pd core local Platform_pd object
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*
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* \retval 0 when successful, otherwise !=0
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*/
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inline int long new_pd(void * const dst, Platform_pd * const pd)
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{
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return call(call_id_new_pd(), (Call_arg)dst, (Call_arg)pd);
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}
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/**
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* Destruct a domain
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*
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* \param pd pointer to pd kernel object
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*/
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inline void delete_pd(Pd * const pd)
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{
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call(call_id_delete_pd(), (Call_arg)pd);
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}
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/**
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* Update locally effective domain configuration to in-memory state
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*
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* \param pd pointer to pd kernel object
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*
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* Kernel and/or hardware may cache parts of a domain configuration. This
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* function ensures that the in-memory state of the targeted domain gets
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* CPU-locally effective.
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*/
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inline void update_pd(Pd * const pd)
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{
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call(call_id_update_pd(), (Call_arg)pd);
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}
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/**
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* Create a thread
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*
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* \param p memory donation for the new kernel thread object
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* \param priority scheduling priority of the new thread
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* \param quota CPU-time quota of the new thread in milliseconds
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* \param label debugging label of the new thread
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*
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* \retval >0 kernel name of the new thread
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* \retval 0 failed
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*/
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inline unsigned new_thread(void * const p, unsigned const priority,
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size_t const quota, char const * const label)
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{
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return call(call_id_new_thread(), (Call_arg)p, (Call_arg)priority,
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(Call_arg)quota, (Call_arg)label);
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}
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/**
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* Pause execution of a specific thread
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*
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* \param thread pointer to thread kernel object
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*/
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inline void pause_thread(Thread * const thread)
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{
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call(call_id_pause_thread(), (Call_arg)thread);
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}
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/**
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* Destruct a thread
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*
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* \param thread pointer to thread kernel object
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*/
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inline void delete_thread(Thread * const thread)
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{
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call(call_id_delete_thread(), (Call_arg)thread);
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}
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/**
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* Start execution of a thread
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*
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* \param thread pointer to thread kernel object
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* \param cpu_id kernel name of the targeted CPU
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* \param pd pointer to pd kernel object
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* \param utcb core local pointer to userland thread-context
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*
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* \retval 0 suceeded
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* \retval !=0 failed
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*/
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inline int start_thread(Thread * const thread, unsigned const cpu_id,
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Pd * const pd, Native_utcb * const utcb)
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{
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return call(call_id_start_thread(), (Call_arg)thread, cpu_id,
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(Call_arg)pd, (Call_arg)utcb);
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}
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/**
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* Cancel blocking of a thread if possible
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*
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* \param thread pointer to thread kernel object
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*
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* \return wether thread was in a cancelable blocking beforehand
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*/
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inline bool resume_thread(Thread * const thread)
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{
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return call(call_id_resume_thread(), (Call_arg)thread);
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}
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/**
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* Set or unset the handler of an event that can be triggered by a thread
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*
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* \param thread pointer to thread kernel object
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* \param event_id kernel name of the targeted thread event
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* \param signal_context_id kernel name of the handlers signal context
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*
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* \retval 0 succeeded
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* \retval -1 failed
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*/
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inline int route_thread_event(Thread * const thread,
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unsigned const event_id,
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unsigned const signal_context_id)
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{
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return call(call_id_route_thread_event(), (Call_arg)thread,
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event_id, signal_context_id);
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}
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/**
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* Access plain member variables of a kernel thread-object
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*
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* \param thread pointer to thread kernel object
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* \param reads amount of read operations
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* \param writes amount of write operations
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* \param values base of the value buffer for all operations
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*
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* \return amount of undone operations according to the execution order
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*
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* Operations are executed in order of the appearance of the register names
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* in the callers UTCB. If reads = 0, read_values is of no relevance. If
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* writes = 0, write_values is of no relevance.
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*
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* Expected structure at the callers UTCB base:
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*
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* 0 * sizeof(addr_t): read register name #1
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* ... ...
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* (reads - 1) * sizeof(addr_t): read register name #reads
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* (reads - 0) * sizeof(addr_t): write register name #1
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* ... ...
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* (reads + writes - 1) * sizeof(addr_t): write register name #writes
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*
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* Expected structure at values:
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*
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* 0 * sizeof(addr_t): read destination #1
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* ... ...
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* (reads - 1) * sizeof(addr_t): read destination #reads
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* (reads - 0) * sizeof(addr_t): write value #1
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* ... ...
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* (reads + writes - 1) * sizeof(addr_t): write value #writes
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*/
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inline unsigned access_thread_regs(Thread * const thread,
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unsigned const reads,
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unsigned const writes,
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addr_t * const values)
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{
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return call(call_id_access_thread_regs(), (Call_arg)thread,
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reads, writes, (Call_arg)values);
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}
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/**
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* Create a signal receiver
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*
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* \param p memory donation for the kernel signal-receiver object
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*
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* \retval >0 kernel name of the new signal receiver
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* \retval 0 failed
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*/
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inline unsigned new_signal_receiver(addr_t const p)
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{
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return call(call_id_new_signal_receiver(), p);
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}
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/**
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* Create a signal context and assign it to a signal receiver
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*
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* \param p memory donation for the kernel signal-context object
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* \param receiver pointer to signal receiver kernel object
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* \param imprint user label of the signal context
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*
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* \retval >0 kernel name of the new signal context
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* \retval 0 failed
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*/
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inline unsigned new_signal_context(addr_t const p,
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Signal_receiver * const receiver,
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unsigned const imprint)
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{
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return call(call_id_new_signal_context(), p,
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(Call_arg)receiver, imprint);
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}
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/**
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* Destruct a signal context
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*
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* \param context pointer to signal context kernel object
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*/
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inline void delete_signal_context(Signal_context * const context)
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{
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call(call_id_delete_signal_context(), (Call_arg)context);
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}
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/**
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* Destruct a signal receiver
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*
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* \param receiver pointer to signal receiver kernel object
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*
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* \retval 0 suceeded
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* \retval -1 failed
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*/
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inline void delete_signal_receiver(Signal_receiver * const receiver)
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{
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call(call_id_delete_signal_receiver(), (Call_arg)receiver);
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}
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/**
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* Create a virtual machine that is stopped initially
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*
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* \param dst memory donation for the VM object
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* \param state location of the CPU state of the VM
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* \param signal_context_id kernel name of the signal context for VM events
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* \param table guest-physical to host-physical translation
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* table pointer
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*
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* \retval 0 when successful, otherwise !=0
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*
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* Regaining of the supplied memory is not supported by now.
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*/
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inline int new_vm(void * const dst, void * const state,
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unsigned const signal_context_id,
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void * const table)
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{
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return call(call_id_new_vm(), (Call_arg)dst, (Call_arg)state,
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(Call_arg)table, signal_context_id);
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}
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/**
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* Execute a virtual-machine (again)
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*
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* \param vm pointer to vm kernel object
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*
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* \retval 0 when successful, otherwise !=0
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*/
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inline int run_vm(Vm * const vm)
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{
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return call(call_id_run_vm(), (Call_arg) vm);
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}
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/**
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* Destruct a virtual-machine
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*
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* \param vm pointer to vm kernel object
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*
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* \retval 0 when successful, otherwise !=0
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*/
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inline int delete_vm(Vm * const vm)
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{
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return call(call_id_delete_vm(), (Call_arg) vm);
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}
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/**
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* Stop execution of a virtual-machine
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*
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* \param vm pointer to vm kernel object
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*
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* \retval 0 when successful, otherwise !=0
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*/
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inline int pause_vm(Vm * const vm)
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{
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return call(call_id_pause_vm(), (Call_arg) vm);
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}
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}
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#endif /* _KERNEL__CORE_INTERFACE_H_ */
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