1 files changed, 117 insertions, 0 deletions
diff --git a/nuttx/arch/c5471/src/up_sigdeliver.c b/nuttx/arch/c5471/src/up_sigdeliver.c
new file mode 100644
index 0000000000..00b38a9dd4
--- /dev/null
+++ b/nuttx/arch/c5471/src/up_sigdeliver.c
@@ -0,0 +1,117 @@
+/************************************************************
+ * up_sigdeliver.c
+ *
+ *   Copyright (C) 2007 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 Gregory Nutt 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"
+#include "c5471.h"
+
+/************************************************************
+ * Definitions
+ ************************************************************/
+
+/************************************************************
+ * Private Data
+ ************************************************************/
+
+/************************************************************
+ * Private Functions
+ ************************************************************/
+
+/************************************************************
+ * Public Funtions
+ ************************************************************/
+
+/************************************************************
+ * 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)
+{
+  _TCB  *rtcb = (_TCB*)g_readytorun.head;
+  uint32 regs[XCPTCONTEST_REGS];
+  sig_deliver_t sigdeliver;
+
+  ASSERT(rtcb->xcp.sigdeliver);
+
+  /* Save the real return state on the stack. */
+
+  up_copystate(regs, rtcb->xcp.regs);
+  regs[JB_LR]   = rtcb->xcp.saved_lr;
+  regs[JB_CPSR] = rtcb->xcp.saved_cpsr;
+
+  /* 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 enable interrupts.  We should still be safe from
+   * any further signal handling actions until we also
+   * nullify tcb->xcp.sigdeliver.
+   */
+
+  irqrestore(SVC_MODE | F_BIT);
+
+  /* Deliver the signals */
+
+  sigdeliver(rtcb);
+
+  /* Then restore the correct state for this thread of
+   * execution.
+   */
+
+  up_fullcontextrestore(regs);
+}