1 files changed, 79 insertions, 0 deletions
diff --git a/libgloss/m68k/cf-crt1.c b/libgloss/m68k/cf-crt1.c
new file mode 100644
index 000000000..a26acfd91
--- /dev/null
+++ b/libgloss/m68k/cf-crt1.c
@@ -0,0 +1,79 @@
+/* Initialization code for coldfire boards.
+ *
+ * Copyright (c) 2006 CodeSourcery Inc
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+#include <stdlib.h>
+
+extern const int __interrupt_vector[];
+extern void __reset (void);
+
+extern const char __data_load[] __attribute__ ((aligned (4)));
+extern char __data_start[] __attribute__ ((aligned (4)));
+extern char __bss_start[] __attribute__ ((aligned (4)));
+extern char __end[] __attribute__ ((aligned (4)));
+void *__heap_limit;
+extern void software_init_hook (void) __attribute__ ((weak));
+extern void hardware_init_hook (void) __attribute__ ((weak));
+extern void __INIT_SECTION__ (void);
+extern void __FINI_SECTION__ (void);
+
+extern int main (int, char **, char **);
+
+/* This is called from a tiny assembly stub.  */
+void __start1 (void *heap_limit)
+{
+  unsigned ix;
+  
+  if (hardware_init_hook)
+    hardware_init_hook ();
+  
+  /* Initialize memory */
+  if (__data_load != __data_start)
+    memcpy (__data_start, __data_load, __bss_start - __data_start);
+  memset (__bss_start, 0, __end - __bss_start);
+  
+  __heap_limit = heap_limit;
+  
+  if (software_init_hook)
+    software_init_hook ();
+
+  __INIT_SECTION__ ();
+
+  /* I'm not sure how useful it is to have a fini_section in an
+     embedded system.  */
+  atexit (__FINI_SECTION__);
+  
+  ix = main (0, NULL, NULL);
+  exit (ix);
+  
+  while (1)
+    __reset ();
+}
+
+/* A default hardware init hook.  */
+
+void __attribute__ ((weak)) hardware_init_hook (void)
+{
+  /* Set the VBR. */
+  __asm__ __volatile__ ("movec.l %0,%/vbr" :: "r" (__interrupt_vector));
+
+#ifndef __mcf_family_5213
+  /* Flush & enable the caches */
+#define CACR_CINV (1 << 24)
+#define CACR_CENB (1 << 31)
+  __asm__ __volatile__ ("movec.l %0,%/cacr" :: "r" (CACR_CINV | CACR_CENB));
+#endif
+
+  /* Should we drop into user mode here? */
+}