1 files changed, 66 insertions, 0 deletions
diff --git a/cpukit/score/cpu/epiphany/epiphany-context-initialize.c b/cpukit/score/cpu/epiphany/epiphany-context-initialize.c
new file mode 100644
index 0000000000..b47871e4ab
--- /dev/null
+++ b/cpukit/score/cpu/epiphany/epiphany-context-initialize.c
@@ -0,0 +1,66 @@
+/*
+ *
+ * Copyright (c) 2015 University of York.
+ * Hesham ALMatary <hmka501@york.ac.uk>
+ *
+ * COPYRIGHT (c) 1989-2006.
+ * On-Line Applications Research Corporation (OAR).
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <string.h>
+
+#include <rtems/score/cpu.h>
+#include <rtems/score/interr.h>
+
+void _CPU_Context_Initialize(
+  Context_Control *context,
+  void *stack_area_begin,
+  size_t stack_area_size,
+  uint32_t new_level,
+  void (*entry_point)( void ),
+  bool is_fp,
+  void *tls_area
+)
+{
+  uintptr_t stack = ((uintptr_t) stack_area_begin);
+  uint32_t sr, iret;
+
+  /* Account for red-zone */
+  uintptr_t stack_high = stack + stack_area_size - EPIPHANY_GCC_RED_ZONE_SIZE;
+
+  asm volatile ("movfs %0, status \n" : "=r" (sr):);
+  asm volatile ("movfs %0, iret \n" : "=r" (iret):);
+
+  memset(context, 0, sizeof(*context));
+
+  context->r[11] = stack_high;
+  context->r[13] = stack_high;
+  context->r[14] = (uintptr_t) entry_point;
+  context->status = sr;
+  context->iret = iret;
+}