diff --git a/arm-runtimes/test-support/picolibc-test-wrapper.py b/arm-runtimes/test-support/picolibc-test-wrapper.py
index 2451599b..e391e692 100755
--- a/arm-runtimes/test-support/picolibc-test-wrapper.py
+++ b/arm-runtimes/test-support/picolibc-test-wrapper.py
@@ -40,8 +40,6 @@
 ]
 
 disabled_tests_fvp = [
-    # SDDKW-53824: ":semihosting-features" pseudo-file not implemented.
-    "test/semihost/semihost-exit-extended",
     # SDDKW-25808: SYS_SEEK returns wrong value.
     "test/semihost/semihost-seek",
     "test/test-fread-fwrite",
diff --git a/arm-runtimes/test-support/run_fvp.py b/arm-runtimes/test-support/run_fvp.py
index 1a882d2f..2822f0bd 100755
--- a/arm-runtimes/test-support/run_fvp.py
+++ b/arm-runtimes/test-support/run_fvp.py
@@ -67,6 +67,18 @@ def run_fvp(
     if verbose:
         print("running: {}".format(shlex.join(command)))
 
+    # SDDKW-53824: the ":semihosting-features" pseudo-file isn't simulated
+    # by these models. To work around that, we create one ourselves in the
+    # test process's working directory, containing the single feature flag
+    # SH_EXT_EXIT_EXTENDED, meaning that the SYS_EXIT_EXTENDED semihosting
+    # request will work. This permits the test program's exit status to be
+    # propagated to the exit status of the FVP, so that tests returning 77
+    # for "test skipped" can be automatically detected.
+    with open(
+        path.join(working_directory, ":semihosting-features"), "wb"
+    ) as fh:
+        fh.write(b"SHFB\x01")
+
     result = subprocess.run(
         command,
         stdout=subprocess.PIPE,