diff --git a/lldb/source/Plugins/Process/Windows/Common/NativeRegisterContextWindows_arm64.cpp b/lldb/source/Plugins/Process/Windows/Common/NativeRegisterContextWindows_arm64.cpp
--- a/lldb/source/Plugins/Process/Windows/Common/NativeRegisterContextWindows_arm64.cpp
+++ b/lldb/source/Plugins/Process/Windows/Common/NativeRegisterContextWindows_arm64.cpp
@@ -220,7 +220,7 @@
     reg_value.SetUInt64(tls_context.Pc);
     break;
   case gpr_cpsr_arm64:
-    reg_value.SetUInt64(tls_context.Cpsr);
+    reg_value.SetUInt32(tls_context.Cpsr);
     break;
 
   case gpr_w0_arm64:
@@ -317,7 +317,7 @@
     tls_context.Pc = reg_value.GetAsUInt64();
     break;
   case gpr_cpsr_arm64:
-    tls_context.Cpsr = reg_value.GetAsUInt64();
+    tls_context.Cpsr = reg_value.GetAsUInt32();
     break;
 
   case gpr_w0_arm64:
diff --git a/lldb/source/Plugins/Process/Windows/Common/arm64/RegisterContextWindows_arm64.cpp b/lldb/source/Plugins/Process/Windows/Common/arm64/RegisterContextWindows_arm64.cpp
--- a/lldb/source/Plugins/Process/Windows/Common/arm64/RegisterContextWindows_arm64.cpp
+++ b/lldb/source/Plugins/Process/Windows/Common/arm64/RegisterContextWindows_arm64.cpp
@@ -171,7 +171,7 @@
     reg_value.SetUInt64(m_context.Pc);
     break;
   case gpr_cpsr:
-    reg_value.SetUInt64(m_context.Cpsr);
+    reg_value.SetUInt32(m_context.Cpsr);
     break;
 
   case gpr_w0:
@@ -385,7 +385,7 @@
     m_context.Pc = reg_value.GetAsUInt64();
     break;
   case gpr_cpsr:
-    m_context.Cpsr = reg_value.GetAsUInt64();
+    m_context.Cpsr = reg_value.GetAsUInt32();
     break;
 
   case fpu_v0: