152 lines
3.2 KiB
C++
152 lines
3.2 KiB
C++
/*
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* \brief Platform specific basic Genode types
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* \author Martin Stein
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* \date 2012-01-02
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*/
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/*
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* Copyright (C) 2012-2013 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 _INCLUDE__BASE__NATIVE_TYPES_H_
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#define _INCLUDE__BASE__NATIVE_TYPES_H_
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/* Genode includes */
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#include <kernel/syscalls.h>
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#include <base/native_capability.h>
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#include <base/stdint.h>
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namespace Genode
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{
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class Platform_thread;
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class Tlb;
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typedef Platform_thread * Native_thread;
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typedef unsigned Native_thread_id;
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typedef int Native_connection_state;
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/* FIXME needs to be MMU dependent */
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enum { MIN_MAPPING_SIZE_LOG2 = 12 };
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/**
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* Get kernel-object identifier of the current thread
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*/
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inline Native_thread_id thread_get_my_native_id()
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{ return Kernel::current_thread_id(); }
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/**
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* Get the thread ID, wich is handled as invalid by the kernel
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*/
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inline Native_thread_id thread_invalid_id() { return 0; }
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/**
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* Describes a pagefault
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*/
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struct Pagefault
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{
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unsigned thread_id; /* thread ID of the faulter */
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Tlb * tlb; /* TLB to wich the faulter is assigned */
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addr_t virt_ip; /* the faulters virtual instruction pointer */
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addr_t virt_address; /* virtual fault address */
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bool write; /* write access attempted at fault? */
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/**
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* Placement new operator
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*/
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void * operator new (size_t, void * p) { return p; }
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/**
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* Construct invalid pagefault
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*/
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Pagefault() : thread_id(0) { }
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/**
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* Construct valid pagefault
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*/
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Pagefault(unsigned const tid, Tlb * const tlb,
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addr_t const vip, addr_t const va, bool const w)
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:
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thread_id(tid), tlb(tlb), virt_ip(vip),
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virt_address(va), write(w)
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{ }
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/**
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* Validation
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*/
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bool valid() const { return thread_id != 0; }
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};
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/**
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* Describes a userland-thread-context region
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*/
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struct Native_utcb
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{
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/* UTCB payload */
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char payload[1<<MIN_MAPPING_SIZE_LOG2];
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/**
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* Get the base of the UTCB
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*/
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void * base() { return payload; }
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/**
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* Get the UTCB size
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*/
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size_t size() { return sizeof(payload); }
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};
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struct Cap_dst_policy
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{
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typedef Native_thread_id Dst;
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/**
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* Validate capability destination
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*/
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static bool valid(Dst pt) { return pt != 0; }
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/**
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* Get invalid capability destination
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*/
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static Dst invalid() { return 0; }
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/**
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* Copy capability 'src' to a given memory destination 'dst'
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*/
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static void
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copy(void * dst, Native_capability_tpl<Cap_dst_policy> * src);
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};
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typedef Native_capability_tpl<Cap_dst_policy> Native_capability;
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/**
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* A coherent address region
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*/
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struct Native_region
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{
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addr_t base;
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size_t size;
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};
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struct Native_config
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{
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/**
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* Thread-context area configuration.
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*/
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static addr_t context_area_virtual_base() { return 0x40000000UL; }
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static addr_t context_area_virtual_size() { return 0x10000000UL; }
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/**
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* Size of virtual address region holding the context of one thread
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*/
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static addr_t context_virtual_size() { return 0x00100000UL; }
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};
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struct Native_pd_args { };
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}
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#endif /* _INCLUDE__BASE__NATIVE_TYPES_H_ */
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