Prepare fuzzing engine

src/windows-emulator/memory_utils.hpp

@@ -0,0 +1,71 @@
+#pragma once
+#include <cstdint>
+#include <string>
+#include <emulator.hpp>
+
+inline std::string get_permission_string(const memory_permission permission)
+{
+	const bool has_exec = (permission & memory_permission::exec) != memory_permission::none;
+	const bool has_read = (permission & memory_permission::read) != memory_permission::none;
+	const bool has_write = (permission & memory_permission::write) != memory_permission::none;
+
+	std::string res = {};
+	res.reserve(3);
+
+	res.push_back(has_read ? 'r' : '-');
+	res.push_back(has_write ? 'w' : '-');
+	res.push_back(has_exec ? 'x' : '-');
+
+	return res;
+}
+
+inline memory_permission map_nt_to_emulator_protection(const uint32_t nt_protection)
+{
+	switch (nt_protection)
+	{
+	case PAGE_NOACCESS:
+		return memory_permission::none;
+	case PAGE_READONLY:
+		return memory_permission::read;
+	case PAGE_READWRITE:
+	case PAGE_WRITECOPY:
+		return memory_permission::read | memory_permission::write;
+	case PAGE_EXECUTE:
+	case PAGE_EXECUTE_READ:
+		return memory_permission::read | memory_permission::exec;
+	case PAGE_EXECUTE_READWRITE:
+	case PAGE_EXECUTE_WRITECOPY:
+	default:
+		throw std::runtime_error("Failed to map protection");
+	//return memory_permission::all;
+	}
+}
+
+inline uint32_t map_emulator_to_nt_protection(const memory_permission permission)
+{
+	const bool has_exec = (permission & memory_permission::exec) != memory_permission::none;
+	const bool has_read = (permission & memory_permission::read) != memory_permission::none;
+	const bool has_write = (permission & memory_permission::write) != memory_permission::none;
+
+	if (!has_read)
+	{
+		return PAGE_NOACCESS;
+	}
+
+	if (has_exec && has_write)
+	{
+		return PAGE_EXECUTE_READWRITE;
+	}
+
+	if (has_exec)
+	{
+		return PAGE_EXECUTE_READ;
+	}
+
+	if (has_write)
+	{
+		return PAGE_READWRITE;
+	}
+
+	return PAGE_READONLY;
+}