1 files changed, 104 insertions, 0 deletions
diff --git a/sysdeps/x86/tst-isa-level-1.c b/sysdeps/x86/tst-isa-level-1.c
new file mode 100644
index 0000000000..cf611e8b78
--- /dev/null
+++ b/sysdeps/x86/tst-isa-level-1.c
@@ -0,0 +1,104 @@
+/* Check ISA level on dlopened shared object.
+   Copyright (C) 2020 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 <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <elf.h>
+#include <get-isa-level.h>
+#include <support/xdlfcn.h>
+#include <support/check.h>
+#include <support/test-driver.h>
+
+static void
+do_test_1 (const char *modname, bool fail)
+{
+  int (*fp) (void);
+  void *h;
+
+  h = dlopen (modname, RTLD_LAZY);
+  if (h == NULL)
+    {
+      const char *err = dlerror ();
+      if (fail)
+	{
+	  if (strstr (err, "CPU ISA level is lower than required") == NULL)
+	    FAIL_EXIT1 ("incorrect dlopen '%s' error: %s\n", modname, err);
+
+	  return;
+	}
+
+      FAIL_EXIT1 ("cannot open '%s': %s\n", modname, err);
+    }
+
+  if (fail)
+    FAIL_EXIT1 ("dlopen '%s' should have failed\n", modname);
+
+  fp = xdlsym (h, "test");
+
+  if (fp () != 0)
+    FAIL_EXIT1 ("test () != 0\n");
+
+  dlclose (h);
+}
+
+static int
+do_test (void)
+{
+  const struct cpu_features *cpu_features
+    = __x86_get_cpu_features (COMMON_CPUID_INDEX_MAX);
+  unsigned int isa_level = get_isa_level (cpu_features);
+  bool has_isa_baseline = ((isa_level & GNU_PROPERTY_X86_ISA_1_BASELINE)
+			   == GNU_PROPERTY_X86_ISA_1_BASELINE);
+  bool has_isa_v2 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V2)
+			   == GNU_PROPERTY_X86_ISA_1_V2);
+  bool has_isa_v3 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V3)
+			   == GNU_PROPERTY_X86_ISA_1_V3);
+  bool has_isa_v4 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V4)
+			   == GNU_PROPERTY_X86_ISA_1_V4);
+
+  if (!has_isa_baseline)
+    {
+      do_test_1 ("tst-isa-level-mod-1-baseline.so", true);
+      return EXIT_SUCCESS;
+    }
+
+  do_test_1 ("tst-isa-level-mod-1-baseline.so", false);
+
+  /* Skip on x86-64-v4 platforms since dlopen v4 module always works.  */
+  if (has_isa_v4)
+    return EXIT_SUCCESS;
+
+  do_test_1 ("tst-isa-level-mod-1-v4.so", true);
+
+  /* Skip on x86-64-v3 platforms since dlopen v3 module always works.  */
+  if (has_isa_v3)
+    return EXIT_SUCCESS;
+
+  do_test_1 ("tst-isa-level-mod-1-v3.so", true);
+
+  /* Skip on x86-64-v2 platforms since dlopen v2 module always works.  */
+  if (has_isa_v2)
+    return EXIT_SUCCESS;
+
+  do_test_1 ("tst-isa-level-mod-1-v2.so", true);
+
+  return EXIT_SUCCESS;
+}
+
+#include <support/test-driver.c>