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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "Range.h"
#include "ValueWithShadow.h"
#include <AK/TypeCasts.h>
#include <AK/Types.h>
#include <AK/UFixedBigInt.h>
namespace UserspaceEmulator {
class Emulator;
class Region {
public:
virtual ~Region() = default;
Range const& range() const { return m_range; }
u32 base() const { return m_range.base().get(); }
u32 size() const { return m_range.size(); }
u32 end() const { return m_range.end().get(); }
bool contains(u32 address) const { return address >= base() && address < end(); }
virtual void write8(u32 offset, ValueWithShadow<u8>) = 0;
virtual void write16(u32 offset, ValueWithShadow<u16>) = 0;
virtual void write32(u32 offset, ValueWithShadow<u32>) = 0;
virtual void write64(u32 offset, ValueWithShadow<u64>) = 0;
virtual void write128(u32 offset, ValueWithShadow<u128>) = 0;
virtual void write256(u32 offset, ValueWithShadow<u256>) = 0;
virtual ValueWithShadow<u8> read8(u32 offset) = 0;
virtual ValueWithShadow<u16> read16(u32 offset) = 0;
virtual ValueWithShadow<u32> read32(u32 offset) = 0;
virtual ValueWithShadow<u64> read64(u32 offset) = 0;
virtual ValueWithShadow<u128> read128(u32 offset) = 0;
virtual ValueWithShadow<u256> read256(u32 offset) = 0;
virtual u8* cacheable_ptr([[maybe_unused]] u32 offset) { return nullptr; }
bool is_stack() const { return m_stack; }
void set_stack(bool b) { m_stack = b; }
bool is_text() const { return m_text; }
void set_text(bool b) { m_text = b; }
bool is_readable() const { return m_readable; }
bool is_writable() const { return m_writable; }
bool is_executable() const { return m_executable; }
void set_readable(bool b) { m_readable = b; }
void set_writable(bool b) { m_writable = b; }
void set_executable(bool b) { m_executable = b; }
virtual u8* data() = 0;
virtual u8* shadow_data() = 0;
Emulator& emulator() { return m_emulator; }
Emulator const& emulator() const { return m_emulator; }
template<typename T>
bool fast_is() const = delete;
protected:
Region(u32 base, u32 size, bool mmap = false);
void set_range(Range r) { m_range = r; };
private:
Emulator& m_emulator;
Range m_range;
bool m_mmap { false };
bool m_stack { false };
bool m_text { false };
bool m_readable { true };
bool m_writable { true };
bool m_executable { true };
};
}
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