Initial commit

2026-08-28 05:06:40 +00:00 · 2021-12-01 19:29:27 +10:00
parent b1e7dcdc5d
commit 43f49c8763
1843 changed files with 1111694 additions and 0 deletions
@@ -0,0 +1,107 @@
+#ifndef EMULATOR_INCLUDE_EMULATOR_VIRTUALMEMORY_H_
+#define EMULATOR_INCLUDE_EMULATOR_VIRTUALMEMORY_H_
+
+#include "Kyty/Core/Common.h"
+
+#include "Emulator/Common.h"
+
+#ifdef KYTY_EMU_ENABLED
+
+namespace Kyty::Loader {
+
+enum class ProcessorArchitecture
+{
+	Unknown,
+	Amd64, // x64 (AMD or Intel)
+};
+
+struct SystemInfo
+{
+	uint32_t              PageSize;
+	uint64_t              MinimumApplicationAddress;
+	uint64_t              MaximumApplicationAddress;
+	uint32_t              ActiveProcessorMask;
+	uint32_t              NumberOfProcessors;
+	ProcessorArchitecture ProcessorArchitecture;
+	uint32_t              AllocationGranularity;
+	uint16_t              ProcessorLevel;
+	uint16_t              ProcessorRevision;
+};
+
+SystemInfo GetSystemInfo();
+
+namespace VirtualMemory {
+
+class ExceptionHandlerPrivate;
+
+class ExceptionHandler
+{
+public:
+	enum class ExceptionType
+	{
+		Unknown,
+		AccessViolation
+	};
+
+	enum class AccessViolationType
+	{
+		Unknown,
+		Read,
+		Write,
+		Execute
+	};
+
+	struct ExceptionInfo
+	{
+		ExceptionType       type                   = ExceptionType::Unknown;
+		AccessViolationType access_violation_type  = AccessViolationType::Unknown;
+		uint64_t            access_violation_vaddr = 0;
+	};
+
+	using handler_func_t = void (*)(const ExceptionInfo*);
+
+	ExceptionHandler();
+	virtual ~ExceptionHandler();
+
+	KYTY_CLASS_NO_COPY(ExceptionHandler);
+
+	static uint64_t GetSize();
+
+	bool Install(uint64_t base_address, uint64_t handler_addr, uint64_t image_size, handler_func_t func);
+	bool Uninstall();
+
+private:
+	ExceptionHandlerPrivate* m_p = nullptr;
+};
+
+enum class Mode : uint32_t
+{
+	NoAccess         = 0,
+	Read             = 1,
+	Write            = 2,
+	ReadWrite        = Read | Write,
+	Execute          = 4,
+	ExecuteRead      = Execute | Read,
+	ExecuteWrite     = Execute | Write,
+	ExecuteReadWrite = Execute | Read | Write,
+};
+
+inline bool IsExecute(Mode mode)
+{
+	return (mode == Mode::Execute || mode == Mode::ExecuteRead || mode == Mode::ExecuteWrite || mode == Mode::ExecuteReadWrite);
+}
+
+uint64_t Alloc(uint64_t address, uint64_t size, Mode mode);
+uint64_t AllocAligned(uint64_t address, uint64_t size, Mode mode, uint64_t alignment);
+bool     Free(uint64_t address);
+bool     Protect(uint64_t address, uint64_t size, Mode mode, Mode* old_mode = nullptr);
+bool     FlushInstructionCache(uint64_t address, uint64_t size);
+bool     PatchReplace(uint64_t vaddr, uint64_t value);
+
+} // namespace VirtualMemory
+
+} // namespace Kyty::Loader
+
+#endif // KYTY_EMU_ENABLED
+
+#endif /* EMULATOR_INCLUDE_EMULATOR_VIRTUALMEMORY_H_ */