1 files changed, 96 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/common/up_pthread_start.c b/nuttx/arch/arm/src/common/up_pthread_start.c
new file mode 100644
index 000000000..2f9de8995
--- /dev/null
+++ b/nuttx/arch/arm/src/common/up_pthread_start.c
@@ -0,0 +1,96 @@
+/****************************************************************************
+ * arch/arm/src/common/up_pthread_start.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <pthread.h>
+#include <nuttx/arch.h>
+
+#include "svcall.h"
+#include "up_internal.h"
+
+#if defined(CONFIG_NUTTX_KERNEL) && defined(__KERNEL__) && !defined(CONFIG_DISABLE_PTHREAD)
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_pthread_start
+ *
+ * Description:
+ *   In this kernel mode build, this function will be called to execute a
+ *   pthread in user-space.  When the pthread is first started, a kernel-mode
+ *   stub will first run to perform some housekeeping functions.  This
+ *   kernel-mode stub will then be called transfer control to the user-mode
+ *   pthread.
+ *
+ *   Normally the a user-mode start-up stub will also execute before the
+ *   pthread actually starts.  See libc/pthread/pthread_startup.c
+ *
+ * Input Parameters:
+ *   entrypt - The user-space address of the pthread entry point
+ *   arg     - Standard argument for the pthread entry point
+ *
+ * Returned Value:
+ *   This function should not return.  It should call the user-mode start-up
+ *   stub and that stub should call pthread_exit if/when the user pthread
+ *   terminates.
+ *
+ ****************************************************************************/
+
+void up_pthread_start(pthread_startroutine_t entrypt, pthread_addr_t arg)
+{
+  /* Let sys_call2() do all of the work */
+
+  sys_call2(SYS_pthread_start, (uintptr_t)entrypt, (uintptr_t)arg);
+}
+
+#endif /* CONFIG_NUTTX_KERNEL &&& __KERNEL__ && !CONFIG_DISABLE_PTHREAD */