Import of z80 target

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@455 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 109 insertions, 0 deletions

diff --git a/nuttx/arch/z80/src/common/up_stackdump.c b/nuttx/arch/z80/src/common/up_stackdump.c
new file mode 100644
index 000000000..00c923aa9
--- /dev/null
+++ b/nuttx/arch/z80/src/common/up_stackdump.c
@@ -0,0 +1,109 @@
+/****************************************************************************
+ * common/up_stackdump.c
+ *
+ *   Copyright (C) 2007, 2008 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 <sys/types.h>
+#include <debug.h>
+
+#include "up_arch.h"
+#include "os_internal.h"
+#include "up_internal.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Output debug info if stack dump is selected -- even if 
+ * debug is not selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  lldbg
+# define lldbg lib_lowprintf
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_getsp
+ ****************************************************************************/
+#warning TO BE PROVIDED
+
+/****************************************************************************
+ * Name: up_stackdump
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_STACKDUMP
+static void up_stackdump(void)
+{
+  _TCB *rtcb        = (_TCB*)g_readytorun.head;
+  uint16 sp         = up_getsp();
+  uint16 stack_base = (uint16)rtcb->adj_stack_ptr;
+  uint16 stack_size = (uint16)rtcb->adj_stack_size;
+
+  lldbg("stack_base: %04x\n", stack_base);
+  lldbg("stack_size: %04x\n", stack_size);
+  lldbg("sp:         %04x\n", sp);
+
+  if (sp >= stack_base || sp < stack_base - stack_size)
+    {
+      lldbg("ERROR: Stack pointer is not within allocated stack\n");
+      return;
+    }
+  else
+    {
+      uint16 stack = sp & ~0x0f;
+
+      for (stack = sp & ~0x0f; stack < stack_base; stack += 8*sizeof(uint16))
+        {
+          uint16 *ptr = (uint16*)stack;
+          lldbg("%04x: %04x %04x %04x %04x %04x %04x %04x %04x\n",
+                 stack, ptr[0], ptr[1], ptr[2], ptr[3],
+                 ptr[4], ptr[5], ptr[6], ptr[7]);
+        }
+    }
+}
+#endif