Merge pull request #6932 from sepalani/debug-patches

DebugInterface: MemoryPatches methods added

2 files changed, 151 insertions, 0 deletions

diff --git a/Source/Core/Common/Debug/MemoryPatches.cpp b/Source/Core/Common/Debug/MemoryPatches.cpp
new file mode 100644
index 0000000000..db7a40c58b
--- /dev/null
+++ b/Source/Core/Common/Debug/MemoryPatches.cpp
@@ -0,0 +1,99 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "Common/Debug/MemoryPatches.h"
+
+#include <algorithm>
+#include <sstream>
+
+namespace Common::Debug
+{
+MemoryPatch::MemoryPatch(u32 address_, std::vector<u8> value_)
+    : address(address_), value(value_), is_enabled(State::Enabled)
+{
+}
+
+MemoryPatch::MemoryPatch(u32 address, u32 value)
+    : MemoryPatch(address, {static_cast<u8>(value >> 24), static_cast<u8>(value >> 16),
+                            static_cast<u8>(value >> 8), static_cast<u8>(value)})
+{
+}
+
+MemoryPatches::MemoryPatches() = default;
+MemoryPatches::~MemoryPatches() = default;
+
+void MemoryPatches::SetPatch(u32 address, u32 value)
+{
+  const std::size_t index = m_patches.size();
+  m_patches.emplace_back(address, value);
+  Patch(index);
+}
+
+void MemoryPatches::SetPatch(u32 address, std::vector<u8> value)
+{
+  const std::size_t index = m_patches.size();
+  m_patches.emplace_back(address, std::move(value));
+  Patch(index);
+}
+
+const std::vector<MemoryPatch>& MemoryPatches::GetPatches() const
+{
+  return m_patches;
+}
+
+void MemoryPatches::UnsetPatch(u32 address)
+{
+  const auto it = std::remove_if(m_patches.begin(), m_patches.end(),
+                                 [address](const auto& patch) { return patch.address == address; });
+
+  if (it == m_patches.end())
+    return;
+
+  const std::size_t size = m_patches.size();
+  std::size_t index = size - std::distance(it, m_patches.end());
+  while (index < size)
+  {
+    DisablePatch(index);
+    ++index;
+  }
+  m_patches.erase(it, m_patches.end());
+}
+
+void MemoryPatches::EnablePatch(std::size_t index)
+{
+  if (m_patches[index].is_enabled == MemoryPatch::State::Enabled)
+    return;
+  m_patches[index].is_enabled = MemoryPatch::State::Enabled;
+  Patch(index);
+}
+
+void MemoryPatches::DisablePatch(std::size_t index)
+{
+  if (m_patches[index].is_enabled == MemoryPatch::State::Disabled)
+    return;
+  m_patches[index].is_enabled = MemoryPatch::State::Disabled;
+  Patch(index);
+}
+
+bool MemoryPatches::HasEnabledPatch(u32 address) const
+{
+  return std::any_of(m_patches.begin(), m_patches.end(), [address](const MemoryPatch& patch) {
+    return patch.address == address && patch.is_enabled == MemoryPatch::State::Enabled;
+  });
+}
+
+void MemoryPatches::RemovePatch(std::size_t index)
+{
+  DisablePatch(index);
+  m_patches.erase(m_patches.begin() + index);
+}
+
+void MemoryPatches::ClearPatches()
+{
+  const std::size_t size = m_patches.size();
+  for (std::size_t index = 0; index < size; ++index)
+    DisablePatch(index);
+  m_patches.clear();
+}
+}  // namespace Common::Debug
diff --git a/Source/Core/Common/Debug/MemoryPatches.h b/Source/Core/Common/Debug/MemoryPatches.h
new file mode 100644
index 0000000000..cee814c6b5
--- /dev/null
+++ b/Source/Core/Common/Debug/MemoryPatches.h
@@ -0,0 +1,52 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <cstddef>
+#include <string>
+#include <vector>
+
+#include "Common/CommonTypes.h"
+
+namespace Common::Debug
+{
+struct MemoryPatch
+{
+  enum class State
+  {
+    Enabled,
+    Disabled
+  };
+
+  u32 address;
+  std::vector<u8> value;
+  State is_enabled;
+
+  MemoryPatch(u32 address, std::vector<u8> value);
+  MemoryPatch(u32 address, u32 value);
+};
+
+class MemoryPatches
+{
+public:
+  MemoryPatches();
+  virtual ~MemoryPatches();
+
+  void SetPatch(u32 address, u32 value);
+  void SetPatch(u32 address, std::vector<u8> value);
+  const std::vector<MemoryPatch>& GetPatches() const;
+  void UnsetPatch(u32 address);
+  void EnablePatch(std::size_t index);
+  void DisablePatch(std::size_t index);
+  bool HasEnabledPatch(u32 address) const;
+  void RemovePatch(std::size_t index);
+  void ClearPatches();
+
+protected:
+  virtual void Patch(std::size_t index) = 0;
+
+  std::vector<MemoryPatch> m_patches;
+};
+}  // namespace Common::Debug