Add thread-local storage (TLS) support

Tested and implemented on ARM, m68k, PowerPC and SPARC.  Other
architectures need more work.

4 files changed, 133 insertions, 0 deletions

diff --git a/testsuites/sptests/sptls01/Makefile.am b/testsuites/sptests/sptls01/Makefile.am
new file mode 100644
index 0000000000..5512b8aa3d
--- /dev/null
+++ b/testsuites/sptests/sptls01/Makefile.am
@@ -0,0 +1,19 @@
+rtems_tests_PROGRAMS = sptls01
+sptls01_SOURCES = init.c
+
+dist_rtems_tests_DATA = sptls01.scn sptls01.doc
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
+include $(top_srcdir)/../automake/compile.am
+include $(top_srcdir)/../automake/leaf.am
+
+AM_CPPFLAGS += -I$(top_srcdir)/../support/include
+
+LINK_OBJS = $(sptls01_OBJECTS)
+LINK_LIBS = $(sptls01_LDLIBS)
+
+sptls01$(EXEEXT): $(sptls01_OBJECTS) $(sptls01_DEPENDENCIES)
+	@rm -f sptls01$(EXEEXT)
+	$(make-exe)
+
+include $(top_srcdir)/../automake/local.am
diff --git a/testsuites/sptests/sptls01/init.c b/testsuites/sptests/sptls01/init.c
new file mode 100644
index 0000000000..76bd671dff
--- /dev/null
+++ b/testsuites/sptests/sptls01/init.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <stdio.h>
+
+#include "tmacros.h"
+
+static rtems_id master_task;
+
+static __thread volatile char tls_item = 123;
+
+static void check_tls_item(int expected)
+{
+  printf("TLS item = %i\n", tls_item);
+  rtems_test_assert(tls_item == expected);
+}
+
+static void task(rtems_task_argument arg)
+{
+  rtems_status_code sc;
+
+  check_tls_item(123);
+
+	sc = rtems_event_transient_send(master_task);
+	rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+
+	sc = rtems_task_suspend(RTEMS_SELF);
+	rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+}
+
+static void test(void)
+{
+	rtems_id id;
+	rtems_status_code sc;
+
+	master_task = rtems_task_self();
+
+  check_tls_item(123);
+  tls_item = 5;
+
+  sc = rtems_task_create(
+		rtems_build_name('T', 'A', 'S', 'K'),
+		RTEMS_MINIMUM_PRIORITY,
+		RTEMS_MINIMUM_STACK_SIZE,
+		RTEMS_DEFAULT_MODES,
+		RTEMS_DEFAULT_ATTRIBUTES,
+		&id
+	);
+	rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+
+	sc = rtems_task_start(id, task, 0);
+	rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+
+	sc = rtems_event_transient_receive(RTEMS_WAIT, RTEMS_NO_TIMEOUT);
+	rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+
+	sc = rtems_task_delete(id);
+	rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+
+  check_tls_item(5);
+}
+
+static void Init(rtems_task_argument arg)
+{
+  puts("\n\n*** TEST SPTLS 1 ***");
+
+  test();
+
+  puts("*** END OF TEST SPTLS 1 ***");
+
+  rtems_test_exit(0);
+}
+
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+
+#define CONFIGURE_MAXIMUM_TASKS 2
+
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+
+#define CONFIGURE_INIT
+
+#include <rtems/confdefs.h>
diff --git a/testsuites/sptests/sptls01/sptls01.doc b/testsuites/sptests/sptls01/sptls01.doc
new file mode 100644
index 0000000000..a6cc38b81c
--- /dev/null
+++ b/testsuites/sptests/sptls01/sptls01.doc
@@ -0,0 +1,11 @@
+This file describes the directives and concepts tested by this test set.
+
+test set name: sptls01
+
+directives:
+
+  - None
+
+concepts:
+
+  - Ensure that thread-local storage (TLS) works minimum alignment requirements.
diff --git a/testsuites/sptests/sptls01/sptls01.scn b/testsuites/sptests/sptls01/sptls01.scn
new file mode 100644
index 0000000000..eaeb11e21f
--- /dev/null
+++ b/testsuites/sptests/sptls01/sptls01.scn
@@ -0,0 +1,5 @@
+*** TEST SPTLS 1 ***
+TLS item = 123
+TLS item = 123
+TLS item = 5
+*** END OF TEST SPTLS 1 ***