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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [libgloss/] [m68k/] [cf-crt1.c] - Blame information for rev 258

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Line No. Rev Author Line
1 207 jeremybenn
/* Initialization code for coldfire boards.
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 *
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 * Copyright (c) 2006 CodeSourcery Inc
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 *
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 * The authors hereby grant permission to use, copy, modify, distribute,
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 * and license this software and its documentation for any purpose, provided
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 * that existing copyright notices are retained in all copies and that this
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 * notice is included verbatim in any distributions. No written agreement,
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 * license, or royalty fee is required for any of the authorized uses.
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 * Modifications to this software may be copyrighted by their authors
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 * and need not follow the licensing terms described here, provided that
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 * the new terms are clearly indicated on the first page of each file where
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 * they apply.
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 */
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#include <stdlib.h>
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extern const int __interrupt_vector[];
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extern void __reset (void);
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extern const char __data_load[] __attribute__ ((aligned (4)));
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extern char __data_start[] __attribute__ ((aligned (4)));
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extern char __bss_start[] __attribute__ ((aligned (4)));
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extern char __end[] __attribute__ ((aligned (4)));
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void *__heap_limit;
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extern void software_init_hook (void) __attribute__ ((weak));
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extern void hardware_init_hook (void) __attribute__ ((weak));
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extern void _init (void);
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extern void _fini (void);
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extern int main (int, char **, char **);
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/* This is called from a tiny assembly stub.  */
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void __start1 (void *heap_limit)
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{
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  unsigned ix;
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  if (hardware_init_hook)
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    hardware_init_hook ();
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  /* Initialize memory */
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  if (__data_load != __data_start)
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    memcpy (__data_start, __data_load, __bss_start - __data_start);
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  memset (__bss_start, 0, __end - __bss_start);
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  __heap_limit = heap_limit;
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  if (software_init_hook)
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    software_init_hook ();
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  _init ();
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  /* I'm not sure how useful it is to have a fini_section in an
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     embedded system.  */
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  atexit (_fini);
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  ix = main (0, NULL, NULL);
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  exit (ix);
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  while (1)
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    __reset ();
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}
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/* A default hardware init hook.  */
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void __attribute__ ((weak)) hardware_init_hook (void)
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{
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  /* Set the VBR. */
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  __asm__ __volatile__ ("movec.l %0,%/vbr" :: "r" (__interrupt_vector));
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#if !defined(__mcf_family_5213) && !defined(__mcf_family_51qe)
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  /* Flush & enable the caches */
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#define CACR_CINV (1 << 24)
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#define CACR_CENB (1 << 31)
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  __asm__ __volatile__ ("movec.l %0,%/cacr" :: "r" (CACR_CINV | CACR_CENB));
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#endif
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  /* Should we drop into user mode here? */
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}

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