diff --git a/arm-software/embedded/arm-runtimes/test-support/xfails.py b/arm-software/embedded/arm-runtimes/test-support/xfails.py
index 336e83b708d7..674cb3591aa8 100644
--- a/arm-software/embedded/arm-runtimes/test-support/xfails.py
+++ b/arm-software/embedded/arm-runtimes/test-support/xfails.py
@@ -934,6 +934,117 @@ def check_r52_warning():
             ],
             description="The test expects serial port activity to end the test and times out without it.",
         ),
+        XFail(
+            name="LLVM-libc fenv tests without hardware floating point",
+            testnames=[
+                "src/fenv/libc.test.src.fenv.enabled_exceptions_test.__build__",
+                "src/fenv/libc.test.src.fenv.exception_flags_test.__build__",
+                "src/fenv/libc.test.src.fenv.exception_status_test.__build__",
+                "src/fenv/libc.test.src.fenv.feupdateenv_test.__build__",
+                "src/fenv/libc.test.src.fenv.getenv_and_setenv_test.__build__",
+                "src/fenv/libc.test.src.fenv.rounding_mode_test.__build__",
+            ],
+            result=NewResult.XFAILED,
+            project="llvmlibc",
+            variants=[
+                "armv7a_soft_nofp",
+                "armv7a_soft_nofp_exn_rtti",
+                "armv7a_soft_nofp_exn_rtti_unaligned",
+                "armv7a_soft_nofp_unaligned",
+                "armv7m_soft_nofp_exn_rtti_size",
+                "armv7m_soft_nofp_exn_rtti_unaligned_size",
+                "armv7m_soft_nofp_size",
+                "armv7m_soft_nofp_unaligned_size",
+                "armv7r_soft_nofp",
+                "armv7r_soft_nofp_exn_rtti",
+                "armv7r_soft_nofp_exn_rtti_unaligned",
+                "armv7r_soft_nofp_unaligned",
+                "armv8.1m.main_hard_nofp_mve_exn_rtti_size",
+                "armv8.1m.main_hard_nofp_mve_exn_rtti_unaligned",
+                "armv8.1m.main_hard_nofp_mve_exn_rtti_unaligned_size",
+                "armv8.1m.main_hard_nofp_mve_size",
+                "armv8.1m.main_hard_nofp_mve_unaligned",
+                "armv8.1m.main_hard_nofp_mve_unaligned_size",
+                "armv8.1m.main_soft_nofp_nomve_exn_rtti_unaligned_size",
+                "armv8.1m.main_soft_nofp_nomve_unaligned_size",
+                "armv8m.main_soft_nofp_exn_rtti_unaligned_size",
+                "armv8m.main_soft_nofp_unaligned_size",
+            ],
+            description="LLVM-libc fenv operations are not supported without hardware floating point.",
+        ),
+        XFail(
+            name="LLVM-libc sprintf long double tests",
+            testnames=[
+                "src/stdio/libc.test.src.stdio.sprintf_test.__build__",
+            ],
+            result=NewResult.XFAILED,
+            project="llvmlibc",
+            variants=[
+                "armv7a_hard_vfpv3_d16",
+                "armv7a_hard_vfpv3_d16_exn_rtti",
+                "armv7a_hard_vfpv3_d16_exn_rtti_unaligned",
+                "armv7a_hard_vfpv3_d16_unaligned",
+                "armv7a_soft_nofp",
+                "armv7a_soft_nofp_exn_rtti",
+                "armv7a_soft_nofp_exn_rtti_unaligned",
+                "armv7a_soft_nofp_unaligned",
+                "armv7a_soft_vfpv3_d16",
+                "armv7a_soft_vfpv3_d16_exn_rtti",
+                "armv7a_soft_vfpv3_d16_exn_rtti_unaligned",
+                "armv7a_soft_vfpv3_d16_unaligned",
+                "armv7m_hard_fpv4_sp_d16_exn_rtti_size",
+                "armv7m_hard_fpv4_sp_d16_exn_rtti_unaligned_size",
+                "armv7m_hard_fpv4_sp_d16_size",
+                "armv7m_hard_fpv4_sp_d16_unaligned_size",
+                "armv7m_hard_fpv5_d16_exn_rtti_unaligned_size",
+                "armv7m_hard_fpv5_d16_unaligned_size",
+                "armv7m_soft_fpv4_sp_d16_exn_rtti_size",
+                "armv7m_soft_fpv4_sp_d16_exn_rtti_unaligned_size",
+                "armv7m_soft_fpv4_sp_d16_size",
+                "armv7m_soft_fpv4_sp_d16_unaligned_size",
+                "armv7m_soft_nofp_exn_rtti_size",
+                "armv7m_soft_nofp_exn_rtti_unaligned_size",
+                "armv7m_soft_nofp_size",
+                "armv7m_soft_nofp_unaligned_size",
+                "armv7r_hard_vfpv3_d16",
+                "armv7r_hard_vfpv3_d16_exn_rtti",
+                "armv7r_hard_vfpv3_d16_exn_rtti_unaligned",
+                "armv7r_hard_vfpv3_d16_unaligned",
+                "armv7r_hard_vfpv3xd",
+                "armv7r_hard_vfpv3xd_exn_rtti",
+                "armv7r_hard_vfpv3xd_exn_rtti_unaligned",
+                "armv7r_hard_vfpv3xd_unaligned",
+                "armv7r_soft_nofp",
+                "armv7r_soft_nofp_exn_rtti",
+                "armv7r_soft_nofp_exn_rtti_unaligned",
+                "armv7r_soft_nofp_unaligned",
+                "armv7r_soft_vfpv3xd",
+                "armv7r_soft_vfpv3xd_exn_rtti",
+                "armv7r_soft_vfpv3xd_exn_rtti_unaligned",
+                "armv7r_soft_vfpv3xd_unaligned",
+                "armv8.1m.main_hard_fp_nomve_exn_rtti_unaligned",
+                "armv8.1m.main_hard_fp_nomve_exn_rtti_unaligned_size",
+                "armv8.1m.main_hard_fp_nomve_unaligned",
+                "armv8.1m.main_hard_fp_nomve_unaligned_size",
+                "armv8.1m.main_hard_fpdp_nomve_exn_rtti_unaligned",
+                "armv8.1m.main_hard_fpdp_nomve_exn_rtti_unaligned_size",
+                "armv8.1m.main_hard_fpdp_nomve_unaligned",
+                "armv8.1m.main_hard_fpdp_nomve_unaligned_size",
+                "armv8.1m.main_hard_nofp_mve_exn_rtti_size",
+                "armv8.1m.main_hard_nofp_mve_exn_rtti_unaligned",
+                "armv8.1m.main_hard_nofp_mve_exn_rtti_unaligned_size",
+                "armv8.1m.main_hard_nofp_mve_size",
+                "armv8.1m.main_hard_nofp_mve_unaligned",
+                "armv8.1m.main_hard_nofp_mve_unaligned_size",
+                "armv8.1m.main_soft_nofp_nomve_exn_rtti_unaligned_size",
+                "armv8.1m.main_soft_nofp_nomve_unaligned_size",
+                "armv8m.main_hard_fp_exn_rtti_unaligned_size",
+                "armv8m.main_hard_fp_unaligned_size",
+                "armv8m.main_soft_nofp_exn_rtti_unaligned_size",
+                "armv8m.main_soft_nofp_unaligned_size",
+            ],
+            description="The test expects an extended-precision long double implementation.",
+        ),
         XFail(
             name="variadic vector type arguments",
             testnames=[