early-access version 1255

externals/dynarmic/src/backend/x64/constant_pool.h

@@ -0,0 +1,40 @@
+/* This file is part of the dynarmic project.
+ * Copyright (c) 2016 MerryMage
+ * SPDX-License-Identifier: 0BSD
+ */
+
+#pragma once
+
+#include <map>
+#include <tuple>
+
+#include <xbyak.h>
+
+#include "common/common_types.h"
+
+namespace Dynarmic::Backend::X64 {
+
+class BlockOfCode;
+
+/// ConstantPool allocates a block of memory from BlockOfCode.
+/// It places constants into this block of memory, returning the address
+/// of the memory location where the constant is placed. If the constant
+/// already exists, its memory location is reused.
+class ConstantPool final {
+public:
+    ConstantPool(BlockOfCode& code, size_t size);
+
+    Xbyak::Address GetConstant(const Xbyak::AddressFrame& frame, u64 lower, u64 upper = 0);
+
+private:
+    static constexpr size_t align_size = 16; // bytes
+
+    std::map<std::tuple<u64, u64>, void*> constant_info;
+
+    BlockOfCode& code;
+    size_t pool_size;
+    u8* pool_begin;
+    u8* current_pool_ptr;
+};
+
+} // namespace Dynarmic::Backend::X64