1 files changed, 85 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/lm3s69xx/startup/bspstarthook.c b/c/src/lib/libbsp/arm/lm3s69xx/startup/bspstarthook.c
new file mode 100644
index 0000000000..33d0670205
--- /dev/null
+++ b/c/src/lib/libbsp/arm/lm3s69xx/startup/bspstarthook.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2011 Sebastian Huber.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Obere Lagerstr. 30
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#include <bspopts.h>
+#include <bsp/start.h>
+#include <bsp/linker-symbols.h>
+
+static void BSP_START_TEXT_SECTION copy(int *dst, const int *src, int n)
+{
+  if (src != dst) {
+    const int *end = dst + (n + sizeof(int) - 1) / sizeof(int);
+
+    while (dst != end) {
+      *dst = *src;
+      ++src;
+      ++dst;
+    }
+  }
+}
+
+static void BSP_START_TEXT_SECTION clear_bss(void)
+{
+  int *dst = (int *) bsp_section_bss_begin;
+  int n = (int) bsp_section_bss_size;
+  const int *end = dst + (n + sizeof(int) - 1) / sizeof(int);
+
+  while (dst != end) {
+    *dst = 0;
+    ++dst;
+  }
+}
+
+void BSP_START_TEXT_SECTION bsp_start_hook_0(void)
+{
+  /* Copy .text section */
+  copy(
+    (int *) bsp_section_text_begin,
+    (const int *) bsp_section_text_load_begin,
+    (size_t) bsp_section_text_size
+  );
+
+  /* Copy .rodata section */
+  copy(
+    (int *) bsp_section_rodata_begin,
+    (const int *) bsp_section_rodata_load_begin,
+    (size_t) bsp_section_rodata_size
+  );
+
+  /* Copy .data section */
+  copy(
+    (int *) bsp_section_data_begin,
+    (const int *) bsp_section_data_load_begin,
+    (size_t) bsp_section_data_size
+  );
+
+  /* Copy .fast_text section */
+  copy(
+    (int *) bsp_section_fast_text_begin,
+    (const int *) bsp_section_fast_text_load_begin,
+    (size_t) bsp_section_fast_text_size
+  );
+
+  /* Copy .fast_data section */
+  copy(
+    (int *) bsp_section_fast_data_begin,
+    (const int *) bsp_section_fast_data_load_begin,
+    (size_t) bsp_section_fast_data_size
+  );
+
+  /* Clear .bss section */
+  clear_bss();
+
+  /* At this point we can use objects outside the .start section */
+}