From eafaeb9398216dacb92de69683ccdda6007efb1d Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Sun, 20 Mar 2011 18:18:19 +0000
Subject: Move nuttx/examples to apps/examples

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3405 42af7a65-404d-4744-a932-0658087f49c3
---
 apps/examples/pashello/pashello.c | 143 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100644 apps/examples/pashello/pashello.c

(limited to 'apps/examples/pashello/pashello.c')

diff --git a/apps/examples/pashello/pashello.c b/apps/examples/pashello/pashello.c
new file mode 100644
index 000000000..8bdefe702
--- /dev/null
+++ b/apps/examples/pashello/pashello.c
@@ -0,0 +1,143 @@
+/****************************************************************************
+ * examples/pashello/pashello.c
+ *
+ *   Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <debug.h>
+
+#include "pexec.h"
+#include "pedefs.h"
+#include "pashello.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#ifndef CONFIG_PASHELLO_VARSTACKSIZE
+# define CONFIG_PASHELLO_VARSTACKSIZE 1024
+#endif
+
+#ifndef CONFIG_PASHELLO_STRSTACKSIZE
+# define CONFIG_PASHELLO_STRSTACKSIZE 128
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: prun
+ *
+ * Description:
+ *   This function executes the P-Code program until a stopping condition
+ *   is encountered.
+ *
+ ****************************************************************************/
+
+static void prun(FAR struct pexec_s *st)
+{
+  int errcode;
+
+  for (;;)
+    {
+      /* Execute the instruction; Check for exceptional conditions */
+
+      errcode = pexec(st);
+      if (errcode != eNOERROR) break;
+    }
+
+  if (errcode != eEXIT)
+    {
+      printf("Runtime error 0x%02x -- Execution Stopped\n", errcode);
+    }
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * user_initialize
+ ****************************************************************************/
+
+#ifndef CONFIG_HAVE_WEAKFUNCTIONS
+void user_initialize(void)
+{
+}
+#endif
+
+/****************************************************************************
+ * user_start
+ ****************************************************************************/
+
+int user_start(int argc, FAR char *argv[])
+{
+  FAR struct pexec_s *st;
+
+  /* Register the /dev/hello driver */
+
+  hello_register();
+
+  /* Load the POFF file */
+
+  st = pload("/dev/hello", CONFIG_PASHELLO_VARSTACKSIZE, CONFIG_PASHELLO_STRSTACKSIZE);
+  if (!st)
+    {
+      fprintf(stderr, "user_start: ERROR: Could not load /dev/hello\n");
+      exit(1);
+    }
+  printf("user_start: /dev/hello Loaded\n");
+  printf("user_start: Interpreter started:\n");
+
+  /* And start program execution */
+
+  prun(st);
+
+  /* Clean up resources used by the interpreter */
+
+  printf("user_start: Interpreter terminated");
+  pexec_release(st);
+  return 0;
+}
-- 
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