73eb7a8d4b
Instead of mapping all physical memory 1:1 into core/kernel's address space, this commit limits the 1:1 mapping to the binary image, and I/O memory regions used by the kernel only. All subsequent memory accesses of core are done by mapping the corresponding memory on demand, and not necessarily 1:1. This commit has several side effects: The page table code had to be revisited completely. The kernel inserts no longer anything into the page tables, apart from the initial translations to have the core/kernel image available when enabling the MMU. The page tables and higher level translation tables are no longer named Tlb, but Translation_table instead. There is no indirection class required to define the translation tables of a concrete SoC, the appropriated ARM specifier is sufficient. The ability to map core's memory the same way like it's done for all other protection domains, makes a special treatment of core's threads (no context area) obsolete. Ref #567 (partly solves it) Fix #723 Fix #1068
63 lines
1.3 KiB
C++
63 lines
1.3 KiB
C++
/*
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* \brief Implementation of Thread API interface for core
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* \author Stefan Kalkowski
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* \author Martin Stein
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* \date 2014-02-27
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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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/* Genode includes */
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#include <base/thread.h>
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#include <base/sleep.h>
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#include <base/env.h>
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/* core includes */
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#include <platform.h>
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#include <platform_thread.h>
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using namespace Genode;
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extern Genode::Native_utcb * _main_thread_utcb;
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Native_utcb * main_thread_utcb() {
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return _main_thread_utcb; }
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void Thread_base::start()
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{
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/* start thread with stack pointer at the top of stack */
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if (_tid.platform_thread->start((void *)&_thread_start, stack_top()))
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PERR("failed to start thread");
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}
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void Thread_base::cancel_blocking()
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{
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_tid.platform_thread->cancel_blocking();
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}
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void Thread_base::_deinit_platform_thread()
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{
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/* destruct platform thread */
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destroy(platform()->core_mem_alloc(), _tid.platform_thread);
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}
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void Thread_base::_init_platform_thread(Type type)
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{
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/* create platform thread */
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_tid.platform_thread = new (platform()->core_mem_alloc())
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Platform_thread(_context->name, &_context->utcb);
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if (type == NORMAL) { return; }
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PWRN("not implemented!");
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}
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