LibDebug: Move Dwarf::AttributeValue to a separate file

Userland/Libraries/LibDebug/Dwarf/AttributeValue.h

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2021, Itamar S. <itamar8910@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Types.h>
+
+namespace Debug::Dwarf {
+
+struct AttributeValue {
+    enum class Type : u8 {
+        UnsignedNumber,
+        SignedNumber,
+        LongUnsignedNumber,
+        String,
+        DieReference, // Reference to another DIE in the same compilation unit
+        Boolean,
+        DwarfExpression,
+        SecOffset,
+        RawBytes,
+    } type;
+
+    union {
+        u32 as_u32;
+        i32 as_i32;
+        u64 as_u64;
+        const char* as_string; // points to bytes in the memory mapped elf image
+        bool as_bool;
+        struct {
+            u32 length;
+            const u8* bytes; // points to bytes in the memory mapped elf image
+        } as_raw_bytes;
+    } data {};
+};
+
+}