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diff --git a/lldb/source/Utility/WasmVirtualRegisters.h b/lldb/source/Utility/WasmVirtualRegisters.h
new file mode 100644
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+++ b/lldb/source/Utility/WasmVirtualRegisters.h
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLDB_SOURCE_UTILITY_WASM_VIRTUAL_REGISTERS_H
+#define LLDB_SOURCE_UTILITY_WASM_VIRTUAL_REGISTERS_H
+
+#include "lldb/lldb-private.h"
+
+namespace lldb_private {
+
+// LLDB doesn't have an address space to represents WebAssembly locals,
+// globals and operand stacks. We encode these elements into virtual
+// registers:
+//
+//   | tag: 2 bits | index: 30 bits |
+//
+// Where tag is:
+//    0: Not a Wasm location
+//    1: Local
+//    2: Global
+//    3: Operand stack value
+enum WasmVirtualRegisterKinds {
+  eWasmTagNotAWasmLocation = 0,
+  eWasmTagLocal = 1,
+  eWasmTagGlobal = 2,
+  eWasmTagOperandStack = 3,
+};
+
+static const uint32_t kWasmVirtualRegisterTagMask = 0x03;
+static const uint32_t kWasmVirtualRegisterIndexMask = 0x3fffffff;
+static const uint32_t kWasmVirtualRegisterTagShift = 30;
+
+inline uint32_t GetWasmVirtualRegisterTag(size_t reg) {
+  return (reg >> kWasmVirtualRegisterTagShift) & kWasmVirtualRegisterTagMask;
+}
+
+inline uint32_t GetWasmVirtualRegisterIndex(size_t reg) {
+  return reg & kWasmVirtualRegisterIndexMask;
+}
+
+inline uint32_t GetWasmRegister(uint8_t tag, uint32_t index) {
+  return ((tag & kWasmVirtualRegisterTagMask) << kWasmVirtualRegisterTagShift) |
+         (index & kWasmVirtualRegisterIndexMask);
+}
+
+} // namespace lldb_private
+
+#endif