From 3b0eb489665d4d8422d34309a13b20fcf65f637a Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Fri, 11 Jan 2008 18:19:09 +0000
Subject: untest z16f code

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@553 42af7a65-404d-4744-a932-0658087f49c3
---
 nuttx/arch/z16/src/common/up_sigdeliver.c | 143 ++++++++++++++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100644 nuttx/arch/z16/src/common/up_sigdeliver.c

(limited to 'nuttx/arch/z16/src/common/up_sigdeliver.c')

diff --git a/nuttx/arch/z16/src/common/up_sigdeliver.c b/nuttx/arch/z16/src/common/up_sigdeliver.c
new file mode 100644
index 000000000..9083c596f
--- /dev/null
+++ b/nuttx/arch/z16/src/common/up_sigdeliver.c
@@ -0,0 +1,143 @@
+/****************************************************************************
+ * common/up_sigdeliver.c
+ *
+ *   Copyright (C) 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 <sched.h>
+#include <debug.h>
+
+#include <nuttx/irq.h>
+#include <nuttx/arch.h>
+
+#include "os_internal.h"
+#include "up_internal.h"
+
+#ifndef CONFIG_DISABLE_SIGNALS
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_sigdeliver
+ *
+ * Description:
+ *   This is the a signal handling trampoline.  When a
+ *   signal action was posted.  The task context was mucked
+ *   with and forced to branch to this location with interrupts
+ *   disabled.
+ *
+ ****************************************************************************/
+
+void up_sigdeliver(void)
+{
+#ifndef CONFIG_DISABLE_SIGNALS
+  _TCB  *rtcb = (_TCB*)g_readytorun.head;
+  chipreg_t regs[XCPTCONTEXT_REGS];
+  sig_deliver_t sigdeliver;
+
+  /* Save the errno.  This must be preserved throughout the signal handling
+   * so that the the user code final gets the correct errno value (probably
+   * EINTR).
+   */
+
+  int saved_errno = rtcb->errno;
+
+  up_ledon(LED_SIGNAL);
+
+  dbg("rtcb=%p sigdeliver=%p sigpendactionq.head=%p\n",
+       rtcb, rtcb->xcp.sigdeliver, rtcb->sigpendactionq.head);
+  ASSERT(rtcb->xcp.sigdeliver != NULL);
+
+  /* Save the real return state on the stack. */
+
+  up_copystate(regs, rtcb->xcp.regs);
+  regs[XCPT_PC] = rtcb->xcp.saved_pc;
+  regs[XCPT_I]  = rtcb->xcp.saved_i;
+
+  /* Get a local copy of the sigdeliver function pointer.
+   * we do this so that we can nullify the sigdeliver
+   * function point in the TCB and accept more signal
+   * deliveries while processing the current pending
+   * signals.
+   */
+
+  sigdeliver           = rtcb->xcp.sigdeliver;
+  rtcb->xcp.sigdeliver = NULL;
+
+  /* Then restore the task interrupt state. */
+
+  irqrestore(regs[XCPT_I]);
+
+  /* Deliver the signals */
+
+  sigdeliver(rtcb);
+
+  /* Output any debug messaged BEFORE restoring errno
+   * (because they may alter errno), then restore the
+   * original errno that is needed by the user logic
+   * (it is probably EINTR).
+   */
+
+  dbg("Resuming\n");
+  rtcb->errno = saved_errno;
+
+  /* Then restore the correct state for this thread of
+   * execution.
+   */
+
+  up_ledoff(LED_SIGNAL);
+  SIGNAL_RETURN(regs);
+#endif
+}
+
+#endif /* CONFIG_DISABLE_SIGNALS */
-- 
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