LXR linux/arch/blackfin/include/asm/flat.h

   1/*
   2 * uClinux flat-format executables
   3 *
   4 * Copyright 2003-2009 Analog Devices Inc.
   5 *
   6 * Licensed under the GPL-2
   7 */
   8
   9#ifndef __BLACKFIN_FLAT_H__
  10#define __BLACKFIN_FLAT_H__
  11
  12#include <asm/unaligned.h>
  13
  14#define flat_argvp_envp_on_stack()              0
  15#define flat_old_ram_flag(flags)                (flags)
  16
  17extern unsigned long bfin_get_addr_from_rp (unsigned long *ptr,
  18                                        unsigned long relval,
  19                                        unsigned long flags,
  20                                        unsigned long *persistent);
  21
  22extern void bfin_put_addr_at_rp(unsigned long *ptr, unsigned long addr,
  23                                unsigned long relval);
  24
  25/* The amount by which a relocation can exceed the program image limits
  26   without being regarded as an error.  */
  27
  28#define flat_reloc_valid(reloc, size)   ((reloc) <= (size))
  29
  30#define flat_get_addr_from_rp(rp, relval, flags, persistent)    \
  31        bfin_get_addr_from_rp(rp, relval, flags, persistent)
  32#define flat_put_addr_at_rp(rp, val, relval)    \
  33        bfin_put_addr_at_rp(rp, val, relval)
  34
  35/* Convert a relocation entry into an address.  */
  36static inline unsigned long
  37flat_get_relocate_addr (unsigned long relval)
  38{
  39        return relval & 0x03ffffff; /* Mask out top 6 bits */
  40}
  41
  42static inline int flat_set_persistent(unsigned long relval,
  43                                      unsigned long *persistent)
  44{
  45        int type = (relval >> 26) & 7;
  46        if (type == 3) {
  47                *persistent = relval << 16;
  48                return 1;
  49        }
  50        return 0;
  51}
  52
  53static inline int flat_addr_absolute(unsigned long relval)
  54{
  55        return (relval & (1 << 29)) != 0;
  56}
  57
  58#endif                          /* __BLACKFIN_FLAT_H__ */
  59