1 files changed, 94 insertions, 0 deletions
diff --git a/hurd/test-sig-xstate.c b/hurd/test-sig-xstate.c
new file mode 100644
index 0000000..0a68a44
--- /dev/null
+++ b/hurd/test-sig-xstate.c
@@ -0,0 +1,94 @@
+/* Test the state save/restore procedures during signal handling.
+
+   Copyright (C) 2025 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+
+#include <assert.h>
+#include <pthread.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <mach/message.h>
+#include <mach/gnumach.h>
+#include <mach/mach_traps.h>
+#include <mach-shortcuts.h>
+#include <mach_init.h>
+#include <hurd/io.h>
+#include <hurd/io_reply.h>
+
+#include <support/check.h>
+#include <support/xthread.h>
+
+#include "test-xstate.h"
+
+static volatile bool loopflag = true;
+
+void handler (int signum, siginfo_t *info, void *context)
+{
+  char buf3[XSTATE_BUFFER_SIZE];
+  memset (buf3, 0x77, XSTATE_BUFFER_SIZE);
+  SET_XSTATE (buf3);
+  printf ("signal %d setting a different CPU state\n", signum);
+  loopflag = false;
+}
+
+/* Helper thread to send a signal to the main thread  */
+void* signal_sender (void *arg)
+{
+  sigset_t ss;
+  assert (! sigemptyset (&ss));
+  assert (! sigaddset (&ss, SIGUSR1));
+  assert (! sigprocmask (SIG_BLOCK, &ss, NULL));
+
+  TEST_COMPARE (kill (getpid (), SIGUSR1), 0);
+
+  return NULL;
+}
+
+static int do_test (void)
+{
+#if ! XSTATE_HELPERS_SUPPORTED
+  FAIL_UNSUPPORTED ("Test not supported on this arch.");
+#endif
+
+  struct sigaction act = { 0 };
+  act.sa_sigaction = &handler;
+  TEST_COMPARE (sigaction (SIGUSR1, &act, NULL), 0);
+
+  pthread_t thsender = xpthread_create (NULL, signal_sender, NULL);
+
+  char buf1[XSTATE_BUFFER_SIZE], buf2[XSTATE_BUFFER_SIZE];
+  memset (buf1, 0x33, XSTATE_BUFFER_SIZE);
+
+  SET_XSTATE (buf1);
+
+  while (loopflag)
+    ;
+
+  GET_XSTATE (buf2);
+  TEST_COMPARE_BLOB (buf1, sizeof (buf1), buf2, sizeof (buf2));
+
+  xpthread_join (thsender);
+  return EXIT_SUCCESS;
+}
+
+#include <support/test-driver.c>