include/linux/flat.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2002-2003  David McCullough <davidm@snapgear.com>
   4  * Copyright (C) 1998       Kenneth Albanowski <kjahds@kjahds.com>
   5  *                          The Silver Hammer Group, Ltd.
   6  *
   7  * This file provides the definitions and structures needed to
   8  * support uClinux flat-format executables.
   9  */
  10 #ifndef _LINUX_FLAT_H
  11 #define _LINUX_FLAT_H
  12
  13 #include <uapi/linux/flat.h>
  14 #include <asm/flat.h>
  15
  16 /*
  17  * While it would be nice to keep this header clean,  users of older
  18  * tools still need this support in the kernel.  So this section is
  19  * purely for compatibility with old tool chains.
  20  *
  21  * DO NOT make changes or enhancements to the old format please,  just work
  22  *        with the format above,  except to fix bugs with old format support.
  23  */
  24
  25 #include <asm/byteorder.h>
  26
  27 #define OLD_FLAT_VERSION                        0x00000002L
  28 #define OLD_FLAT_RELOC_TYPE_TEXT        0
  29 #define OLD_FLAT_RELOC_TYPE_DATA        1
  30 #define OLD_FLAT_RELOC_TYPE_BSS         2
  31
  32 typedef union {
  33         unsigned long   value;
  34         struct {
  35 # if defined(mc68000) && !defined(CONFIG_COLDFIRE)
  36                 signed long offset : 30;
  37                 unsigned long type : 2;
  38 #       define OLD_FLAT_FLAG_RAM    0x1 /* load program entirely into RAM */
  39 # elif defined(__BIG_ENDIAN_BITFIELD)
  40                 unsigned long type : 2;
  41                 signed long offset : 30;
  42 #       define OLD_FLAT_FLAG_RAM    0x1 /* load program entirely into RAM */
  43 # elif defined(__LITTLE_ENDIAN_BITFIELD)
  44                 signed long offset : 30;
  45                 unsigned long type : 2;
  46 #       define OLD_FLAT_FLAG_RAM    0x1 /* load program entirely into RAM */
  47 # else
  48 #       error "Unknown bitfield order for flat files."
  49 # endif
  50         } reloc;
  51 } flat_v2_reloc_t;
  52
  53 #endif /* _LINUX_FLAT_H */