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7cecb28bdf
This fixes a problem I was having where using frame advance with the debugger open would frequently cause panic alerts about invalid addresses due to the CPU thread changing MSR.DR while the host thread was trying to access memory. To aid in tracking down all the places where we weren't properly locking the CPU, I've created a new type (in Core.h) that you have to pass as a reference or pointer to functions that require running as the CPU thread.
117 lines
3.4 KiB
C++
117 lines
3.4 KiB
C++
// Copyright 2018 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "Common/Debug/MemoryPatches.h"
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#include <algorithm>
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#include <sstream>
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#include <utility>
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namespace Common::Debug
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{
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MemoryPatch::MemoryPatch(u32 address_, std::vector<u8> value_)
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: address(address_), value(std::move(value_))
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{
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}
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MemoryPatch::MemoryPatch(u32 address_, u32 value_)
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: MemoryPatch(address_, {static_cast<u8>(value_ >> 24), static_cast<u8>(value_ >> 16),
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static_cast<u8>(value_ >> 8), static_cast<u8>(value_)})
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{
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}
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MemoryPatches::MemoryPatches() = default;
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MemoryPatches::~MemoryPatches() = default;
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void MemoryPatches::SetPatch(const Core::CPUThreadGuard& guard, u32 address, u32 value)
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{
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const std::size_t index = m_patches.size();
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m_patches.emplace_back(address, value);
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Patch(guard, index);
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}
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void MemoryPatches::SetPatch(const Core::CPUThreadGuard& guard, u32 address, std::vector<u8> value)
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{
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UnsetPatch(guard, address);
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const std::size_t index = m_patches.size();
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m_patches.emplace_back(address, std::move(value));
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Patch(guard, index);
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}
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void MemoryPatches::SetFramePatch(const Core::CPUThreadGuard& guard, u32 address, u32 value)
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{
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const std::size_t index = m_patches.size();
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m_patches.emplace_back(address, value);
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m_patches.back().type = MemoryPatch::ApplyType::EachFrame;
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Patch(guard, index);
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}
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void MemoryPatches::SetFramePatch(const Core::CPUThreadGuard& guard, u32 address,
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std::vector<u8> value)
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{
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UnsetPatch(guard, address);
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const std::size_t index = m_patches.size();
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m_patches.emplace_back(address, std::move(value));
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m_patches.back().type = MemoryPatch::ApplyType::EachFrame;
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Patch(guard, index);
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}
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const std::vector<MemoryPatch>& MemoryPatches::GetPatches() const
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{
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return m_patches;
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}
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void MemoryPatches::UnsetPatch(const Core::CPUThreadGuard& guard, u32 address)
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{
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const auto it = std::find_if(m_patches.begin(), m_patches.end(),
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[address](const auto& patch) { return patch.address == address; });
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if (it == m_patches.end())
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return;
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const std::size_t index = std::distance(m_patches.begin(), it);
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RemovePatch(guard, index);
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}
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void MemoryPatches::EnablePatch(const Core::CPUThreadGuard& guard, std::size_t index)
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{
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if (m_patches[index].is_enabled == MemoryPatch::State::Enabled)
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return;
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m_patches[index].is_enabled = MemoryPatch::State::Enabled;
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Patch(guard, index);
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}
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void MemoryPatches::DisablePatch(const Core::CPUThreadGuard& guard, std::size_t index)
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{
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if (m_patches[index].is_enabled == MemoryPatch::State::Disabled)
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return;
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m_patches[index].is_enabled = MemoryPatch::State::Disabled;
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Patch(guard, index);
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}
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bool MemoryPatches::HasEnabledPatch(u32 address) const
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{
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return std::any_of(m_patches.begin(), m_patches.end(), [address](const MemoryPatch& patch) {
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return patch.address == address && patch.is_enabled == MemoryPatch::State::Enabled;
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});
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}
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void MemoryPatches::RemovePatch(const Core::CPUThreadGuard& guard, std::size_t index)
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{
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DisablePatch(guard, index);
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UnPatch(index);
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m_patches.erase(m_patches.begin() + index);
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}
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void MemoryPatches::ClearPatches(const Core::CPUThreadGuard& guard)
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{
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const std::size_t size = m_patches.size();
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for (std::size_t index = 0; index < size; ++index)
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{
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DisablePatch(guard, index);
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UnPatch(index);
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}
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m_patches.clear();
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}
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} // namespace Common::Debug
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