This initial vfork() check-in was a little pollyanna-ish

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5487 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 82 insertions, 0 deletions

diff --git a/nuttx/arch/arm/src/common/up_vfork.h b/nuttx/arch/arm/src/common/up_vfork.h
new file mode 100644
index 000000000..a4505474a
--- /dev/null
+++ b/nuttx/arch/arm/src/common/up_vfork.h
@@ -0,0 +1,82 @@
+/****************************************************************************
+ * arch/arm/src/common/arm-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
+{
+  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*/
+};
+#endif
+
+#endif /* __ARCH_ARM_SRC_ARM_VFORK_H */