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+/****************************************************************************
+ * arch/arm/src/common/up_vfork.h
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_ARM_VFORK_H
+#define __ARCH_ARM_SRC_ARM_VFORK_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define VFORK_R4_OFFSET (0*4) /* Volatile register r4 */
+#define VFORK_R5_OFFSET (1*4) /* Volatile register r5 */
+#define VFORK_R6_OFFSET (2*4) /* Volatile register r6 */
+#define VFORK_R7_OFFSET (3*4) /* Volatile register r7 */
+#define VFORK_R8_OFFSET (4*4) /* Volatile register r8 */
+#define VFORK_R9_OFFSET (5*4) /* Volatile register r9 */
+#define VFORK_R10_OFFSET (6*4) /* Volatile register r10 */
+
+#define VFORK_FP_OFFSET (7*4) /* Frame pointer */
+#define VFORK_SP_OFFSET (8*4) /* Stack pointer*/
+#define VFORK_LR_OFFSET (9*4) /* Return address*/
+
+#define VFORK_SIZEOF (10*4)
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+struct vfork_s
+{
+ /* CPU registers */
+
+ uint32_t r4; /* Volatile register r4 */
+ uint32_t r5; /* Volatile register r5 */
+ uint32_t r6; /* Volatile register r6 */
+ uint32_t r7; /* Volatile register r7 */
+ uint32_t r8; /* Volatile register r8 */
+ uint32_t r9; /* Volatile register r9 */
+ uint32_t r10; /* Volatile register r10 */
+
+ uint32_t fp; /* Frame pointer */
+ uint32_t sp; /* Stack pointer*/
+ uint32_t lr; /* Return address*/
+
+ /* Floating point registers (not yet) */
+};
+#endif
+
+#endif /* __ARCH_ARM_SRC_ARM_VFORK_H */