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UserspaceEmulator: Move SimpleRegion to its own files

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This commit is contained in:
Andreas Kling 2020-07-13 11:21:41 +02:00
parent 4d3787ae33
commit 3d42b85969
4 changed files with 133 additions and 56 deletions
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3
DevTools/UserspaceEmulator/CMakeLists.txt
View file

@ -1,7 +1,8 @@
set(SOURCES
Emulator.cpp
SimpleRegion.cpp
SoftCPU.cpp
SoftMMU.cpp
Emulator.cpp
main.cpp
)

56
DevTools/UserspaceEmulator/Emulator.cpp
View file

@ -25,6 +25,7 @@
*/
#include "Emulator.h"
#include "SimpleRegion.h"
#include "SoftCPU.h"
#include <AK/LexicalPath.h>
#include <AK/LogStream.h>
@ -43,61 +44,6 @@ namespace UserspaceEmulator {
static constexpr u32 stack_location = 0x10000000;
static constexpr size_t stack_size = 64 * KB;
class SimpleRegion final : public SoftMMU::Region {
public:
SimpleRegion(u32 base, u32 size)
: Region(base, size)
{
m_data = (u8*)calloc(1, size);
}
~SimpleRegion()
{
free(m_data);
}
virtual u8 read8(u32 offset) override
{
ASSERT(offset < size());
return *reinterpret_cast<const u8*>(m_data + offset);
}
virtual u16 read16(u32 offset) override
{
ASSERT(offset + 1 < size());
return *reinterpret_cast<const u16*>(m_data + offset);
}
virtual u32 read32(u32 offset) override
{
ASSERT(offset + 3 < size());
return *reinterpret_cast<const u32*>(m_data + offset);
}
virtual void write8(u32 offset, u8 value) override
{
ASSERT(offset < size());
*reinterpret_cast<u8*>(m_data + offset) = value;
}
virtual void write16(u32 offset, u16 value) override
{
ASSERT(offset + 1 < size());
*reinterpret_cast<u16*>(m_data + offset) = value;
}
virtual void write32(u32 offset, u32 value) override
{
ASSERT(offset + 3 < size());
*reinterpret_cast<u32*>(m_data + offset) = value;
}
u8* data() { return m_data; }
private:
u8* m_data { nullptr };
};
Emulator::Emulator(const String& executable_path, NonnullRefPtr<ELF::Loader> elf)
: m_elf(move(elf))
, m_cpu(*this)

78
DevTools/UserspaceEmulator/SimpleRegion.cpp Normal file
View file

@ -0,0 +1,78 @@
/*
* Copyright (c) 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.
*/
#include "SimpleRegion.h"
namespace UserspaceEmulator {
SimpleRegion::SimpleRegion(u32 base, u32 size)
: Region(base, size)
{
m_data = (u8*)calloc(1, size);
}
SimpleRegion::~SimpleRegion()
{
free(m_data);
}
u8 SimpleRegion::read8(FlatPtr offset)
{
ASSERT(offset < size());
return *reinterpret_cast<const u8*>(m_data + offset);
}
u16 SimpleRegion::read16(u32 offset)
{
ASSERT(offset + 1 < size());
return *reinterpret_cast<const u16*>(m_data + offset);
}
u32 SimpleRegion::read32(u32 offset)
{
ASSERT(offset + 3 < size());
return *reinterpret_cast<const u32*>(m_data + offset);
}
void SimpleRegion::write8(u32 offset, u8 value)
{
ASSERT(offset < size());
*reinterpret_cast<u8*>(m_data + offset) = value;
}
void SimpleRegion::write16(u32 offset, u16 value)
{
ASSERT(offset + 1 < size());
*reinterpret_cast<u16*>(m_data + offset) = value;
}
void SimpleRegion::write32(u32 offset, u32 value)
{
ASSERT(offset + 3 < size());
*reinterpret_cast<u32*>(m_data + offset) = value;
}
}

52
DevTools/UserspaceEmulator/SimpleRegion.h Normal file
View file

@ -0,0 +1,52 @@
/*
* Copyright (c) 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 "SoftMMU.h"
namespace UserspaceEmulator {
class SimpleRegion final : public SoftMMU::Region {
public:
SimpleRegion(u32 base, u32 size);
virtual ~SimpleRegion() override;
virtual u8 read8(u32 offset) override;
virtual u16 read16(u32 offset) override;
virtual u32 read32(u32 offset) override;
virtual void write8(u32 offset, u8 value) override;
virtual void write16(u32 offset, u16 value) override;
virtual void write32(u32 offset, u32 value) override;
u8* data() { return m_data; }
private:
u8* m_data { nullptr };
};
}