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99 lines
3.3 KiB
C++
99 lines
3.3 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "Range.h"
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#include "ValueWithShadow.h"
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#include <AK/TypeCasts.h>
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#include <AK/Types.h>
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namespace UserspaceEmulator {
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class Emulator;
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class Region {
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public:
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virtual ~Region() { }
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const Range& range() const { return m_range; }
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u32 base() const { return m_range.base().get(); }
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u32 size() const { return m_range.size(); }
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u32 end() const { return m_range.end().get(); }
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bool contains(u32 address) const { return address >= base() && address < end(); }
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virtual void write8(u32 offset, ValueWithShadow<u8>) = 0;
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virtual void write16(u32 offset, ValueWithShadow<u16>) = 0;
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virtual void write32(u32 offset, ValueWithShadow<u32>) = 0;
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virtual void write64(u32 offset, ValueWithShadow<u64>) = 0;
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virtual ValueWithShadow<u8> read8(u32 offset) = 0;
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virtual ValueWithShadow<u16> read16(u32 offset) = 0;
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virtual ValueWithShadow<u32> read32(u32 offset) = 0;
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virtual ValueWithShadow<u64> read64(u32 offset) = 0;
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virtual u8* cacheable_ptr([[maybe_unused]] u32 offset) { return nullptr; }
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bool is_stack() const { return m_stack; }
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void set_stack(bool b) { m_stack = b; }
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bool is_text() const { return m_text; }
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void set_text(bool b) { m_text = b; }
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bool is_readable() const { return m_readable; }
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bool is_writable() const { return m_writable; }
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bool is_executable() const { return m_executable; }
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void set_readable(bool b) { m_readable = b; }
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void set_writable(bool b) { m_writable = b; }
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void set_executable(bool b) { m_executable = b; }
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virtual u8* data() = 0;
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virtual u8* shadow_data() = 0;
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Emulator& emulator() { return m_emulator; }
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const Emulator& emulator() const { return m_emulator; }
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protected:
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Region(u32 base, u32 size);
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void set_range(Range r) { m_range = r; };
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private:
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Emulator& m_emulator;
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Range m_range;
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bool m_stack { false };
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bool m_text { false };
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bool m_readable { true };
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bool m_writable { true };
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bool m_executable { true };
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};
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}
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