Move all tests out of the csu subdirectory

Stack-protection on .o files in csu/ must be suppressed for the sake of
library startup code.  This also suppresses stack-protection in tests
(which are also covered by CFLAGS-.o), though this is neither necessary
nor desirable.

So impose the rule that .o files in csu/ are necessarily C startup code,
and move the few tests in there into misc/ instead.

4 files changed, 678 insertions, 1 deletions

diff --git a/misc/Makefile b/misc/Makefile
index 3d2ebb8e45..d241daea47 100644
--- a/misc/Makefile
+++ b/misc/Makefile
@@ -79,7 +79,10 @@ gpl2lgpl := error.c error.h
 tests := tst-dirname tst-tsearch tst-fdset tst-efgcvt tst-mntent tst-hsearch \
 	 tst-error1 tst-pselect tst-insremque tst-mntent2 bug-hsearch1 \
 	 tst-mntent-blank-corrupt tst-mntent-blank-passno bug18240 \
-	 tst-preadvwritev tst-preadvwritev64 tst-makedev
+	 tst-preadvwritev tst-preadvwritev64 tst-makedev tst-empty \
+	 tst-atomic tst-atomic-long
+tests-static := tst-empty
+
 ifeq ($(run-built-tests),yes)
 tests-special += $(objpfx)tst-error1-mem.out
 endif
diff --git a/misc/tst-atomic-long.c b/misc/tst-atomic-long.c
new file mode 100644
index 0000000000..6b62299d60
--- /dev/null
+++ b/misc/tst-atomic-long.c
@@ -0,0 +1,27 @@
+/* Tests for atomic.h macros.
+   Copyright (C) 2003-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <bits/wordsize.h>
+
+#define atomic_t long
+#if __WORDSIZE == 64
+# define TEST_ATOMIC64 1
+#endif
+
+#include "tst-atomic.c"
diff --git a/misc/tst-atomic.c b/misc/tst-atomic.c
new file mode 100644
index 0000000000..720b865496
--- /dev/null
+++ b/misc/tst-atomic.c
@@ -0,0 +1,639 @@
+/* Tests for atomic.h macros.
+   Copyright (C) 2003-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <atomic.h>
+
+#ifndef atomic_t
+# define atomic_t int
+#endif
+
+/* Test various atomic.h macros.  */
+static int
+do_test (void)
+{
+  atomic_t mem, expected;
+  int ret = 0;
+
+#ifdef atomic_compare_and_exchange_val_acq
+  mem = 24;
+  if (atomic_compare_and_exchange_val_acq (&mem, 35, 24) != 24
+      || mem != 35)
+    {
+      puts ("atomic_compare_and_exchange_val_acq test 1 failed");
+      ret = 1;
+    }
+
+  mem = 12;
+  if (atomic_compare_and_exchange_val_acq (&mem, 10, 15) != 12
+      || mem != 12)
+    {
+      puts ("atomic_compare_and_exchange_val_acq test 2 failed");
+      ret = 1;
+    }
+
+  mem = -15;
+  if (atomic_compare_and_exchange_val_acq (&mem, -56, -15) != -15
+      || mem != -56)
+    {
+      puts ("atomic_compare_and_exchange_val_acq test 3 failed");
+      ret = 1;
+    }
+
+  mem = -1;
+  if (atomic_compare_and_exchange_val_acq (&mem, 17, 0) != -1
+      || mem != -1)
+    {
+      puts ("atomic_compare_and_exchange_val_acq test 4 failed");
+      ret = 1;
+    }
+#endif
+
+  mem = 24;
+  if (atomic_compare_and_exchange_bool_acq (&mem, 35, 24)
+      || mem != 35)
+    {
+      puts ("atomic_compare_and_exchange_bool_acq test 1 failed");
+      ret = 1;
+    }
+
+  mem = 12;
+  if (! atomic_compare_and_exchange_bool_acq (&mem, 10, 15)
+      || mem != 12)
+    {
+      puts ("atomic_compare_and_exchange_bool_acq test 2 failed");
+      ret = 1;
+    }
+
+  mem = -15;
+  if (atomic_compare_and_exchange_bool_acq (&mem, -56, -15)
+      || mem != -56)
+    {
+      puts ("atomic_compare_and_exchange_bool_acq test 3 failed");
+      ret = 1;
+    }
+
+  mem = -1;
+  if (! atomic_compare_and_exchange_bool_acq (&mem, 17, 0)
+      || mem != -1)
+    {
+      puts ("atomic_compare_and_exchange_bool_acq test 4 failed");
+      ret = 1;
+    }
+
+  mem = 64;
+  if (atomic_exchange_acq (&mem, 31) != 64
+      || mem != 31)
+    {
+      puts ("atomic_exchange_acq test failed");
+      ret = 1;
+    }
+
+  mem = 2;
+  if (atomic_exchange_and_add (&mem, 11) != 2
+      || mem != 13)
+    {
+      puts ("atomic_exchange_and_add test failed");
+      ret = 1;
+    }
+
+  mem = 2;
+  if (atomic_exchange_and_add_acq (&mem, 11) != 2
+      || mem != 13)
+    {
+      puts ("atomic_exchange_and_add test failed");
+      ret = 1;
+    }
+
+  mem = 2;
+  if (atomic_exchange_and_add_rel (&mem, 11) != 2
+      || mem != 13)
+    {
+      puts ("atomic_exchange_and_add test failed");
+      ret = 1;
+    }
+
+  mem = -21;
+  atomic_add (&mem, 22);
+  if (mem != 1)
+    {
+      puts ("atomic_add test failed");
+      ret = 1;
+    }
+
+  mem = -1;
+  atomic_increment (&mem);
+  if (mem != 0)
+    {
+      puts ("atomic_increment test failed");
+      ret = 1;
+    }
+
+  mem = 2;
+  if (atomic_increment_val (&mem) != 3)
+    {
+      puts ("atomic_increment_val test failed");
+      ret = 1;
+    }
+
+  mem = 0;
+  if (atomic_increment_and_test (&mem)
+      || mem != 1)
+    {
+      puts ("atomic_increment_and_test test 1 failed");
+      ret = 1;
+    }
+
+  mem = 35;
+  if (atomic_increment_and_test (&mem)
+      || mem != 36)
+    {
+      puts ("atomic_increment_and_test test 2 failed");
+      ret = 1;
+    }
+
+  mem = -1;
+  if (! atomic_increment_and_test (&mem)
+      || mem != 0)
+    {
+      puts ("atomic_increment_and_test test 3 failed");
+      ret = 1;
+    }
+
+  mem = 17;
+  atomic_decrement (&mem);
+  if (mem != 16)
+    {
+      puts ("atomic_decrement test failed");
+      ret = 1;
+    }
+
+  if (atomic_decrement_val (&mem) != 15)
+    {
+      puts ("atomic_decrement_val test failed");
+      ret = 1;
+    }
+
+  mem = 0;
+  if (atomic_decrement_and_test (&mem)
+      || mem != -1)
+    {
+      puts ("atomic_decrement_and_test test 1 failed");
+      ret = 1;
+    }
+
+  mem = 15;
+  if (atomic_decrement_and_test (&mem)
+      || mem != 14)
+    {
+      puts ("atomic_decrement_and_test test 2 failed");
+      ret = 1;
+    }
+
+  mem = 1;
+  if (! atomic_decrement_and_test (&mem)
+      || mem != 0)
+    {
+      puts ("atomic_decrement_and_test test 3 failed");
+      ret = 1;
+    }
+
+  mem = 1;
+  if (atomic_decrement_if_positive (&mem) != 1
+      || mem != 0)
+    {
+      puts ("atomic_decrement_if_positive test 1 failed");
+      ret = 1;
+    }
+
+  mem = 0;
+  if (atomic_decrement_if_positive (&mem) != 0
+      || mem != 0)
+    {
+      puts ("atomic_decrement_if_positive test 2 failed");
+      ret = 1;
+    }
+
+  mem = -1;
+  if (atomic_decrement_if_positive (&mem) != -1
+      || mem != -1)
+    {
+      puts ("atomic_decrement_if_positive test 3 failed");
+      ret = 1;
+    }
+
+  mem = -12;
+  if (! atomic_add_negative (&mem, 10)
+      || mem != -2)
+    {
+      puts ("atomic_add_negative test 1 failed");
+      ret = 1;
+    }
+
+  mem = 0;
+  if (atomic_add_negative (&mem, 100)
+      || mem != 100)
+    {
+      puts ("atomic_add_negative test 2 failed");
+      ret = 1;
+    }
+
+  mem = 15;
+  if (atomic_add_negative (&mem, -10)
+      || mem != 5)
+    {
+      puts ("atomic_add_negative test 3 failed");
+      ret = 1;
+    }
+
+  mem = -12;
+  if (atomic_add_negative (&mem, 14)
+      || mem != 2)
+    {
+      puts ("atomic_add_negative test 4 failed");
+      ret = 1;
+    }
+
+  mem = 0;
+  if (! atomic_add_negative (&mem, -1)
+      || mem != -1)
+    {
+      puts ("atomic_add_negative test 5 failed");
+      ret = 1;
+    }
+
+  mem = -31;
+  if (atomic_add_negative (&mem, 31)
+      || mem != 0)
+    {
+      puts ("atomic_add_negative test 6 failed");
+      ret = 1;
+    }
+
+  mem = -34;
+  if (atomic_add_zero (&mem, 31)
+      || mem != -3)
+    {
+      puts ("atomic_add_zero test 1 failed");
+      ret = 1;
+    }
+
+  mem = -36;
+  if (! atomic_add_zero (&mem, 36)
+      || mem != 0)
+    {
+      puts ("atomic_add_zero test 2 failed");
+      ret = 1;
+    }
+
+  mem = 113;
+  if (atomic_add_zero (&mem, -13)
+      || mem != 100)
+    {
+      puts ("atomic_add_zero test 3 failed");
+      ret = 1;
+    }
+
+  mem = -18;
+  if (atomic_add_zero (&mem, 20)
+      || mem != 2)
+    {
+      puts ("atomic_add_zero test 4 failed");
+      ret = 1;
+    }
+
+  mem = 10;
+  if (atomic_add_zero (&mem, -20)
+      || mem != -10)
+    {
+      puts ("atomic_add_zero test 5 failed");
+      ret = 1;
+    }
+
+  mem = 10;
+  if (! atomic_add_zero (&mem, -10)
+      || mem != 0)
+    {
+      puts ("atomic_add_zero test 6 failed");
+      ret = 1;
+    }
+
+  mem = 0;
+  atomic_bit_set (&mem, 1);
+  if (mem != 2)
+    {
+      puts ("atomic_bit_set test 1 failed");
+      ret = 1;
+    }
+
+  mem = 8;
+  atomic_bit_set (&mem, 3);
+  if (mem != 8)
+    {
+      puts ("atomic_bit_set test 2 failed");
+      ret = 1;
+    }
+
+#ifdef TEST_ATOMIC64
+  mem = 16;
+  atomic_bit_set (&mem, 35);
+  if (mem != 0x800000010LL)
+    {
+      puts ("atomic_bit_set test 3 failed");
+      ret = 1;
+    }
+#endif
+
+  mem = 0;
+  if (atomic_bit_test_set (&mem, 1)
+      || mem != 2)
+    {
+      puts ("atomic_bit_test_set test 1 failed");
+      ret = 1;
+    }
+
+  mem = 8;
+  if (! atomic_bit_test_set (&mem, 3)
+      || mem != 8)
+    {
+      puts ("atomic_bit_test_set test 2 failed");
+      ret = 1;
+    }
+
+#ifdef TEST_ATOMIC64
+  mem = 16;
+  if (atomic_bit_test_set (&mem, 35)
+      || mem != 0x800000010LL)
+    {
+      puts ("atomic_bit_test_set test 3 failed");
+      ret = 1;
+    }
+
+  mem = 0x100000000LL;
+  if (! atomic_bit_test_set (&mem, 32)
+      || mem != 0x100000000LL)
+    {
+      puts ("atomic_bit_test_set test 4 failed");
+      ret = 1;
+    }
+#endif
+
+#ifdef catomic_compare_and_exchange_val_acq
+  mem = 24;
+  if (catomic_compare_and_exchange_val_acq (&mem, 35, 24) != 24
+      || mem != 35)
+    {
+      puts ("catomic_compare_and_exchange_val_acq test 1 failed");
+      ret = 1;
+    }
+
+  mem = 12;
+  if (catomic_compare_and_exchange_val_acq (&mem, 10, 15) != 12
+      || mem != 12)
+    {
+      puts ("catomic_compare_and_exchange_val_acq test 2 failed");
+      ret = 1;
+    }
+
+  mem = -15;
+  if (catomic_compare_and_exchange_val_acq (&mem, -56, -15) != -15
+      || mem != -56)
+    {
+      puts ("catomic_compare_and_exchange_val_acq test 3 failed");
+      ret = 1;
+    }
+
+  mem = -1;
+  if (catomic_compare_and_exchange_val_acq (&mem, 17, 0) != -1
+      || mem != -1)
+    {
+      puts ("catomic_compare_and_exchange_val_acq test 4 failed");
+      ret = 1;
+    }
+#endif
+
+  mem = 24;
+  if (catomic_compare_and_exchange_bool_acq (&mem, 35, 24)
+      || mem != 35)
+    {
+      puts ("catomic_compare_and_exchange_bool_acq test 1 failed");
+      ret = 1;
+    }
+
+  mem = 12;
+  if (! catomic_compare_and_exchange_bool_acq (&mem, 10, 15)
+      || mem != 12)
+    {
+      puts ("catomic_compare_and_exchange_bool_acq test 2 failed");
+      ret = 1;
+    }
+
+  mem = -15;
+  if (catomic_compare_and_exchange_bool_acq (&mem, -56, -15)
+      || mem != -56)
+    {
+      puts ("catomic_compare_and_exchange_bool_acq test 3 failed");
+      ret = 1;
+    }
+
+  mem = -1;
+  if (! catomic_compare_and_exchange_bool_acq (&mem, 17, 0)
+      || mem != -1)
+    {
+      puts ("catomic_compare_and_exchange_bool_acq test 4 failed");
+      ret = 1;
+    }
+
+  mem = 2;
+  if (catomic_exchange_and_add (&mem, 11) != 2
+      || mem != 13)
+    {
+      puts ("catomic_exchange_and_add test failed");
+      ret = 1;
+    }
+
+  mem = -21;
+  catomic_add (&mem, 22);
+  if (mem != 1)
+    {
+      puts ("catomic_add test failed");
+      ret = 1;
+    }
+
+  mem = -1;
+  catomic_increment (&mem);
+  if (mem != 0)
+    {
+      puts ("catomic_increment test failed");
+      ret = 1;
+    }
+
+  mem = 2;
+  if (catomic_increment_val (&mem) != 3)
+    {
+      puts ("catomic_increment_val test failed");
+      ret = 1;
+    }
+
+  mem = 17;
+  catomic_decrement (&mem);
+  if (mem != 16)
+    {
+      puts ("catomic_decrement test failed");
+      ret = 1;
+    }
+
+  if (catomic_decrement_val (&mem) != 15)
+    {
+      puts ("catomic_decrement_val test failed");
+      ret = 1;
+    }
+
+  /* Tests for C11-like atomics.  */
+  mem = 11;
+  if (atomic_load_relaxed (&mem) != 11 || atomic_load_acquire (&mem) != 11)
+    {
+      puts ("atomic_load_{relaxed,acquire} test failed");
+      ret = 1;
+    }
+
+  atomic_store_relaxed (&mem, 12);
+  if (mem != 12)
+    {
+      puts ("atomic_store_relaxed test failed");
+      ret = 1;
+    }
+  atomic_store_release (&mem, 13);
+  if (mem != 13)
+    {
+      puts ("atomic_store_release test failed");
+      ret = 1;
+    }
+
+  mem = 14;
+  expected = 14;
+  if (!atomic_compare_exchange_weak_relaxed (&mem, &expected, 25)
+      || mem != 25 || expected != 14)
+    {
+      puts ("atomic_compare_exchange_weak_relaxed test 1 failed");
+      ret = 1;
+    }
+  if (atomic_compare_exchange_weak_relaxed (&mem, &expected, 14)
+      || mem != 25 || expected != 25)
+    {
+      puts ("atomic_compare_exchange_weak_relaxed test 2 failed");
+      ret = 1;
+    }
+  mem = 14;
+  expected = 14;
+  if (!atomic_compare_exchange_weak_acquire (&mem, &expected, 25)
+      || mem != 25 || expected != 14)
+    {
+      puts ("atomic_compare_exchange_weak_acquire test 1 failed");
+      ret = 1;
+    }
+  if (atomic_compare_exchange_weak_acquire (&mem, &expected, 14)
+      || mem != 25 || expected != 25)
+    {
+      puts ("atomic_compare_exchange_weak_acquire test 2 failed");
+      ret = 1;
+    }
+  mem = 14;
+  expected = 14;
+  if (!atomic_compare_exchange_weak_release (&mem, &expected, 25)
+      || mem != 25 || expected != 14)
+    {
+      puts ("atomic_compare_exchange_weak_release test 1 failed");
+      ret = 1;
+    }
+  if (atomic_compare_exchange_weak_release (&mem, &expected, 14)
+      || mem != 25 || expected != 25)
+    {
+      puts ("atomic_compare_exchange_weak_release test 2 failed");
+      ret = 1;
+    }
+
+  mem = 23;
+  if (atomic_exchange_acquire (&mem, 42) != 23 || mem != 42)
+    {
+      puts ("atomic_exchange_acquire test failed");
+      ret = 1;
+    }
+  mem = 23;
+  if (atomic_exchange_release (&mem, 42) != 23 || mem != 42)
+    {
+      puts ("atomic_exchange_release test failed");
+      ret = 1;
+    }
+
+  mem = 23;
+  if (atomic_fetch_add_relaxed (&mem, 1) != 23 || mem != 24)
+    {
+      puts ("atomic_fetch_add_relaxed test failed");
+      ret = 1;
+    }
+  mem = 23;
+  if (atomic_fetch_add_acquire (&mem, 1) != 23 || mem != 24)
+    {
+      puts ("atomic_fetch_add_acquire test failed");
+      ret = 1;
+    }
+  mem = 23;
+  if (atomic_fetch_add_release (&mem, 1) != 23 || mem != 24)
+    {
+      puts ("atomic_fetch_add_release test failed");
+      ret = 1;
+    }
+  mem = 23;
+  if (atomic_fetch_add_acq_rel (&mem, 1) != 23 || mem != 24)
+    {
+      puts ("atomic_fetch_add_acq_rel test failed");
+      ret = 1;
+    }
+
+  mem = 3;
+  if (atomic_fetch_and_acquire (&mem, 2) != 3 || mem != 2)
+    {
+      puts ("atomic_fetch_and_acquire test failed");
+      ret = 1;
+    }
+
+  mem = 4;
+  if (atomic_fetch_or_relaxed (&mem, 2) != 4 || mem != 6)
+    {
+      puts ("atomic_fetch_or_relaxed test failed");
+      ret = 1;
+    }
+  mem = 4;
+  if (atomic_fetch_or_acquire (&mem, 2) != 4 || mem != 6)
+    {
+      puts ("atomic_fetch_or_acquire test failed");
+      ret = 1;
+    }
+
+  /* This is a single-threaded test, so we can't test the effects of the
+     fences.  */
+  atomic_thread_fence_acquire ();
+  atomic_thread_fence_release ();
+  atomic_thread_fence_seq_cst ();
+
+  return ret;
+}
+
+#include <support/test-driver.c>
diff --git a/misc/tst-empty.c b/misc/tst-empty.c
new file mode 100644
index 0000000000..31860b06b3
--- /dev/null
+++ b/misc/tst-empty.c
@@ -0,0 +1,8 @@
+/* The most useful C program known to man.  */
+static int
+do_test (void)
+{
+  return 0;
+}
+
+#include <support/test-driver.c>