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LibBareMetal: Creating a new library for freestanding environments

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Liav A 2020-02-09 16:28:56 +02:00 • committed by Andreas Kling
parent c45a5ff840
commit 7c507c27bf
8 changed files with 854 additions and 0 deletions
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78
Libraries/LibBareMetal/Output/Console.h Normal file
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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/CircularQueue.h>
#include <AK/Vector.h>
#if defined(KERNEL)
# include <Kernel/Devices/CharacterDevice.h>
#endif
class ConsoleImplementation {
public:
virtual ~ConsoleImplementation();
virtual void on_sysconsole_receive(u8) = 0;
};
#if defined(KERNEL)
class Console final : public CharacterDevice {
AK_MAKE_ETERNAL
#elif defined(BOOTSTRAPPER)
class Console {
#endif
public:
static Console& the();
static bool is_initialized();
Console();
#if defined(KERNEL)
virtual ~Console() override;
#elif defined(BOOTSTRAPPER)
virtual ~Console();
#endif
#if defined(KERNEL)
// ^CharacterDevice
virtual bool can_read(const FileDescription&) const override;
virtual bool can_write(const FileDescription&) const override { return true; }
virtual ssize_t read(FileDescription&, u8*, ssize_t) override;
virtual ssize_t write(FileDescription&, const u8*, ssize_t) override;
virtual const char* class_name() const override { return "Console"; }
#endif
void set_implementation(ConsoleImplementation* implementation)
{
m_implementation = implementation;
}
void put_char(char);
const CircularQueue<char, 16384>& logbuffer() const { return m_logbuffer; }
private:
ConsoleImplementation* m_implementation { nullptr };
CircularQueue<char, 16384> m_logbuffer;
};