From ed13b7beb6eb2342486d1ee1ecbbb0c6405e2afa Mon Sep 17 00:00:00 2001
From: Daniel Bertalan <dani@danielbertalan.dev>
Date: Sat, 22 Apr 2023 16:58:22 +0200
Subject: [PATCH] LibDebug: Support DW_FORM_ref_udata

This is used alongside/instead of the fixed-length DW_FORM_ref4 form
when compiling for AArch64.
---
 Userland/Libraries/LibDebug/Dwarf/DwarfInfo.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Userland/Libraries/LibDebug/Dwarf/DwarfInfo.cpp b/Userland/Libraries/LibDebug/Dwarf/DwarfInfo.cpp
index 6d52ecf8b7..96bb4df27c 100644
--- a/Userland/Libraries/LibDebug/Dwarf/DwarfInfo.cpp
+++ b/Userland/Libraries/LibDebug/Dwarf/DwarfInfo.cpp
@@ -161,6 +161,13 @@ ErrorOr<AttributeValue> DwarfInfo::get_attribute_value(AttributeDataForm form, s
         value.m_data.as_unsigned = data + unit->offset();
         break;
     }
+    case AttributeDataForm::RefUData: {
+        auto data = TRY(debug_info_stream.read_value<LEB128<size_t>>());
+        value.m_type = AttributeValue::Type::DieReference;
+        VERIFY(unit);
+        value.m_data.as_unsigned = data + unit->offset();
+        break;
+    }
     case AttributeDataForm::FlagPresent: {
         value.m_type = AttributeValue::Type::Boolean;
         value.m_data.as_bool = true;