mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 00:22:43 +00:00
f1c0f661f4
This is useful for reading and writing doubles for #3329. It is also useful for emulating 64-bit binaries. MemoryOrRegisterReference assumes that 64-bit values are always memory references since that's enough for fpu support. If we ever want to emulate 64-bit binaries, that part will need minor updating.
58 lines
2.3 KiB
C++
58 lines
2.3 KiB
C++
/*
|
|
* 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 ValueWithShadow<u8> read8(u32 offset) override;
|
|
virtual ValueWithShadow<u16> read16(u32 offset) override;
|
|
virtual ValueWithShadow<u32> read32(u32 offset) override;
|
|
virtual ValueWithShadow<u64> read64(u32 offset) override;
|
|
|
|
virtual void write8(u32 offset, ValueWithShadow<u8>) override;
|
|
virtual void write16(u32 offset, ValueWithShadow<u16>) override;
|
|
virtual void write32(u32 offset, ValueWithShadow<u32>) override;
|
|
virtual void write64(u32 offset, ValueWithShadow<u64>) override;
|
|
|
|
u8* data() { return m_data; }
|
|
u8* shadow_data() { return m_shadow_data; }
|
|
|
|
virtual u8* cacheable_ptr(u32 offset) override;
|
|
|
|
private:
|
|
u8* m_data { nullptr };
|
|
u8* m_shadow_data { nullptr };
|
|
};
|
|
|
|
}
|