Make powerpc-nofpu floating-point state thread-local (bug 15483).

2 files changed, 210 insertions, 1 deletions

diff --git a/math/Makefile b/math/Makefile
index a9bd49baee..fcccab2051 100644
--- a/math/Makefile
+++ b/math/Makefile
@@ -90,7 +90,7 @@ tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
 	test-misc test-fpucw test-fpucw-ieee tst-definitions test-tgmath \
 	test-tgmath-ret bug-nextafter bug-nexttoward bug-tgmath1 \
 	test-tgmath-int test-tgmath2 test-powl tst-CMPLX tst-CMPLX2 test-snan \
-	$(tests-static)
+	test-fenv-tls $(tests-static)
 tests-static = test-fpucw-static test-fpucw-ieee-static
 # We do the `long double' tests only if this data type is available and
 # distinct from `double'.
@@ -232,3 +232,4 @@ gmp-objs = $(patsubst %,$(common-objpfx)stdlib/%.o,\
 $(objpfx)atest-exp: $(gmp-objs)
 $(objpfx)atest-sincos: $(gmp-objs)
 $(objpfx)atest-exp2: $(gmp-objs)
+$(objpfx)test-fenv-tls: $(common-objpfx)nptl/libpthread.so
diff --git a/math/test-fenv-tls.c b/math/test-fenv-tls.c
new file mode 100644
index 0000000000..879c9f9518
--- /dev/null
+++ b/math/test-fenv-tls.c
@@ -0,0 +1,208 @@
+/* Test floating-point environment is thread-local.
+   Copyright (C) 2013 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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdint.h>
+
+#define TEST_ONE_RM(RM)						\
+  do								\
+    {								\
+      if (fesetround (RM) == 0)					\
+	{							\
+	  rm = fegetround ();					\
+	  if (rm != RM)						\
+	    {							\
+	      printf ("expected " #RM ", got %d\n", rm);	\
+	      ret = 1;						\
+	    }							\
+	}							\
+    }								\
+  while (0)
+
+static void *
+test_round (void *arg)
+{
+  intptr_t ret = 0;
+  for (int i = 0; i < 10000; i++)
+    {
+      int rm;
+#ifdef FE_DOWNWARD
+      TEST_ONE_RM (FE_DOWNWARD);
+#endif
+#ifdef FE_TONEAREST
+      TEST_ONE_RM (FE_TONEAREST);
+#endif
+#ifdef FE_TOWARDZERO
+      TEST_ONE_RM (FE_TOWARDZERO);
+#endif
+#ifdef FE_UPWARD
+      TEST_ONE_RM (FE_UPWARD);
+#endif
+    }
+  return (void *) ret;
+}
+
+#define TEST_ONE_RAISE(EX)				\
+  do							\
+    {							\
+      if (feraiseexcept (EX) == 0)			\
+	if (fetestexcept (EX) != EX)			\
+	  {						\
+	    printf (#EX " not raised\n");		\
+	    ret = 1;					\
+	  }						\
+      if (feclearexcept (FE_ALL_EXCEPT) == 0)		\
+	if (fetestexcept (FE_ALL_EXCEPT) != 0)		\
+	  {						\
+	    printf ("exceptions not all cleared\n");	\
+	    ret = 1;					\
+	  }						\
+    }							\
+  while (0)
+
+static void *
+test_raise (void *arg)
+{
+  intptr_t ret = 0;
+  for (int i = 0; i < 10000; i++)
+    {
+#ifdef FE_DIVBYZERO
+      TEST_ONE_RAISE (FE_DIVBYZERO);
+#endif
+#ifdef FE_INEXACT
+      TEST_ONE_RAISE (FE_INEXACT);
+#endif
+#ifdef FE_INVALID
+      TEST_ONE_RAISE (FE_INVALID);
+#endif
+#ifdef FE_OVERFLOW
+      TEST_ONE_RAISE (FE_OVERFLOW);
+#endif
+#ifdef UNDERFLOW
+      TEST_ONE_RAISE (FE_UNDERFLOW);
+#endif
+    }
+  return (void *) ret;
+}
+
+#define TEST_ONE_ENABLE(EX)				\
+  do							\
+    {							\
+      if (feenableexcept (EX) != -1)			\
+	if (fegetexcept () != EX)			\
+	  {						\
+	    printf (#EX " not enabled\n");		\
+	    ret = 1;					\
+	  }						\
+      if (fedisableexcept (EX) != -1)			\
+	if (fegetexcept () != 0)			\
+	  {						\
+	    printf ("exceptions not all disabled\n");	\
+	    ret = 1;					\
+	  }						\
+    }							\
+  while (0)
+
+static void *
+test_enable (void *arg)
+{
+  intptr_t ret = 0;
+  for (int i = 0; i < 10000; i++)
+    {
+#ifdef FE_DIVBYZERO
+      TEST_ONE_ENABLE (FE_DIVBYZERO);
+#endif
+#ifdef FE_INEXACT
+      TEST_ONE_ENABLE (FE_INEXACT);
+#endif
+#ifdef FE_INVALID
+      TEST_ONE_ENABLE (FE_INVALID);
+#endif
+#ifdef FE_OVERFLOW
+      TEST_ONE_ENABLE (FE_OVERFLOW);
+#endif
+#ifdef UNDERFLOW
+      TEST_ONE_ENABLE (FE_UNDERFLOW);
+#endif
+    }
+  return (void *) ret;
+}
+
+static int
+do_test (void)
+{
+  int ret = 0;
+  void *vret;
+  pthread_t thread_id;
+  int pret;
+
+  pret = pthread_create (&thread_id, NULL, test_round, NULL);
+  if (pret != 0)
+    {
+      printf ("pthread_create failed: %d\n", pret);
+      return 1;
+    }
+  vret = test_round (NULL);
+  ret |= (intptr_t) vret;
+  pret = pthread_join (thread_id, &vret);
+  if (pret != 0)
+    {
+      printf ("pthread_join failed: %d\n", pret);
+      return 1;
+    }
+  ret |= (intptr_t) vret;
+
+  pret = pthread_create (&thread_id, NULL, test_raise, NULL);
+  if (pret != 0)
+    {
+      printf ("pthread_create failed: %d\n", pret);
+      return 1;
+    }
+  vret = test_raise (NULL);
+  ret |= (intptr_t) vret;
+  pret = pthread_join (thread_id, &vret);
+  if (pret != 0)
+    {
+      printf ("pthread_join failed: %d\n", pret);
+      return 1;
+    }
+  ret |= (intptr_t) vret;
+
+  pret = pthread_create (&thread_id, NULL, test_enable, NULL);
+  if (pret != 0)
+    {
+      printf ("pthread_create failed: %d\n", pret);
+      return 1;
+    }
+  vret = test_enable (NULL);
+  ret |= (intptr_t) vret;
+  pret = pthread_join (thread_id, &vret);
+  if (pret != 0)
+    {
+      printf ("pthread_join failed: %d\n", pret);
+      return 1;
+    }
+  ret |= (intptr_t) vret;
+
+  return ret;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"