diff --git a/llvm/include/llvm/BinaryFormat/ELF.h b/llvm/include/llvm/BinaryFormat/ELF.h
index fd32a6ec19652..5356843f8ecf1 100644
--- a/llvm/include/llvm/BinaryFormat/ELF.h
+++ b/llvm/include/llvm/BinaryFormat/ELF.h
@@ -1724,6 +1724,7 @@ enum : unsigned {
   NT_ARM_ZA = 0x40c,
   NT_ARM_ZT = 0x40d,
   NT_ARM_FPMR = 0x40e,
+  NT_ARM_GCS = 0x410,
 
   NT_FILE = 0x46494c45,
   NT_PRXFPREG = 0x46e62b7f,
diff --git a/llvm/lib/ObjectYAML/ELFYAML.cpp b/llvm/lib/ObjectYAML/ELFYAML.cpp
index ca0ea03452d3b..f28e6766f734c 100644
--- a/llvm/lib/ObjectYAML/ELFYAML.cpp
+++ b/llvm/lib/ObjectYAML/ELFYAML.cpp
@@ -136,6 +136,7 @@ void ScalarEnumerationTraits<ELFYAML::ELF_NT>::enumeration(
   ECase(NT_ARM_ZA);
   ECase(NT_ARM_ZT);
   ECase(NT_ARM_FPMR);
+  ECase(NT_ARM_GCS);
   ECase(NT_FILE);
   ECase(NT_PRXFPREG);
   ECase(NT_SIGINFO);
diff --git a/llvm/test/tools/llvm-readobj/ELF/note-core.test b/llvm/test/tools/llvm-readobj/ELF/note-core.test
index 1196d4b250724..2c35178a97524 100644
--- a/llvm/test/tools/llvm-readobj/ELF/note-core.test
+++ b/llvm/test/tools/llvm-readobj/ELF/note-core.test
@@ -265,6 +265,11 @@
 # RUN: llvm-readelf --notes %t_nt_arm_fpmr.o | FileCheck %s --check-prefix=CHECK-GNU  -DDESC="NT_ARM_FPMR (AArch64 Floating Point Mode Register)"
 # RUN: llvm-readobj --notes %t_nt_arm_fpmr.o | FileCheck %s --check-prefix=CHECK-LLVM -DDESC="NT_ARM_FPMR (AArch64 Floating Point Mode Register)"
 
+## Check ELF::NT_ARM_GCS
+# RUN: yaml2obj %s -DTYPE=0x410 -o %t_nt_arm_gcs.o
+# RUN: llvm-readelf --notes %t_nt_arm_gcs.o | FileCheck %s --check-prefix=CHECK-GNU  -DDESC="NT_ARM_GCS (AArch64 Guarded Control Stack state)"
+# RUN: llvm-readobj --notes %t_nt_arm_gcs.o | FileCheck %s --check-prefix=CHECK-LLVM -DDESC="NT_ARM_GCS (AArch64 Guarded Control Stack state)"
+
 ## Check ELF::NT_FILE.
 # RUN: yaml2obj %s -DTYPE=0x46494c45 -o %t_nt_file.o
 # RUN: llvm-readelf --notes %t_nt_file.o | FileCheck %s --check-prefix=CHECK-GNU  -DDESC="NT_FILE (mapped files)"
diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp b/llvm/tools/llvm-readobj/ELFDumper.cpp
index bb8ec41d87454..bfca65aad52b4 100644
--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
+++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
@@ -6057,6 +6057,7 @@ const NoteType CoreNoteTypes[] = {
     {ELF::NT_ARM_ZA, "NT_ARM_ZA (AArch64 SME ZA registers)"},
     {ELF::NT_ARM_ZT, "NT_ARM_ZT (AArch64 SME ZT registers)"},
     {ELF::NT_ARM_FPMR, "NT_ARM_FPMR (AArch64 Floating Point Mode Register)"},
+    {ELF::NT_ARM_GCS, "NT_ARM_GCS (AArch64 Guarded Control Stack state)"},
 
     {ELF::NT_FILE, "NT_FILE (mapped files)"},
     {ELF::NT_PRXFPREG, "NT_PRXFPREG (user_xfpregs structure)"},