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UserspaceEmulator: Make Region a top-level class

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This commit is contained in:
Andreas Kling 2020-11-16 13:16:38 +01:00
parent de4061ff94
commit 8d9dd4c518
6 changed files with 98 additions and 63 deletions
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60
DevTools/UserspaceEmulator/SoftMMU.h
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@ -26,6 +26,7 @@
#pragma once
#include "Region.h"
#include "ValueWithShadow.h"
#include <AK/HashMap.h>
#include <AK/NonnullOwnPtrVector.h>
@ -39,65 +40,6 @@ class SharedBufferRegion;
class SoftMMU {
public:
class Region {
public:
virtual ~Region() { }
u32 base() const { return m_base; }
u32 size() const { return m_size; }
u32 end() const { return m_base + m_size; }
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 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 u8* cacheable_ptr([[maybe_unused]] u32 offset) { return nullptr; }
virtual bool is_shared_buffer() const { return false; }
virtual bool is_mmap() const { return false; }
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;
protected:
Region(u32 base, u32 size)
: m_base(base)
, m_size(size)
{
}
private:
u32 m_base { 0 };
u32 m_size { 0 };
bool m_stack { false };
bool m_text { false };
bool m_readable { true };
bool m_writable { true };
bool m_executable { true };
};
ValueWithShadow<u8> read8(X86::LogicalAddress);
ValueWithShadow<u16> read16(X86::LogicalAddress);
ValueWithShadow<u32> read32(X86::LogicalAddress);