101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
/*
|
|
* Copyright (C) 2002-2003 David McCullough <davidm@snapgear.com>
|
|
* Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>
|
|
* The Silver Hammer Group, Ltd.
|
|
*
|
|
* This file provides the definitions and structures needed to
|
|
* support uClinux flat-format executables.
|
|
*/
|
|
|
|
#ifndef _LINUX_FLAT_H
|
|
#define _LINUX_FLAT_H
|
|
|
|
#ifdef __KERNEL__
|
|
#include <asm/flat.h>
|
|
#endif
|
|
|
|
#define FLAT_VERSION 0x00000004L
|
|
|
|
#ifdef CONFIG_BINFMT_SHARED_FLAT
|
|
#define MAX_SHARED_LIBS (4)
|
|
#else
|
|
#define MAX_SHARED_LIBS (1)
|
|
#endif
|
|
|
|
/*
|
|
* To make everything easier to port and manage cross platform
|
|
* development, all fields are in network byte order.
|
|
*/
|
|
|
|
struct flat_hdr {
|
|
char magic[4];
|
|
unsigned long rev; /* version (as above) */
|
|
unsigned long entry; /* Offset of first executable instruction
|
|
with text segment from beginning of file */
|
|
unsigned long data_start; /* Offset of data segment from beginning of
|
|
file */
|
|
unsigned long data_end; /* Offset of end of data segment
|
|
from beginning of file */
|
|
unsigned long bss_end; /* Offset of end of bss segment from beginning
|
|
of file */
|
|
|
|
/* (It is assumed that data_end through bss_end forms the bss segment.) */
|
|
|
|
unsigned long stack_size; /* Size of stack, in bytes */
|
|
unsigned long reloc_start; /* Offset of relocation records from
|
|
beginning of file */
|
|
unsigned long reloc_count; /* Number of relocation records */
|
|
unsigned long flags;
|
|
unsigned long build_date; /* When the program/library was built */
|
|
unsigned long filler[5]; /* Reservered, set to zero */
|
|
};
|
|
|
|
#define FLAT_FLAG_RAM 0x0001 /* load program entirely into RAM */
|
|
#define FLAT_FLAG_GOTPIC 0x0002 /* program is PIC with GOT */
|
|
#define FLAT_FLAG_GZIP 0x0004 /* all but the header is compressed */
|
|
#define FLAT_FLAG_GZDATA 0x0008 /* only data/relocs are compressed (for XIP) */
|
|
#define FLAT_FLAG_KTRACE 0x0010 /* output useful kernel trace for debugging */
|
|
|
|
|
|
#ifdef __KERNEL__ /* so systems without linux headers can compile the apps */
|
|
/*
|
|
* While it would be nice to keep this header clean, users of older
|
|
* tools still need this support in the kernel. So this section is
|
|
* purely for compatibility with old tool chains.
|
|
*
|
|
* DO NOT make changes or enhancements to the old format please, just work
|
|
* with the format above, except to fix bugs with old format support.
|
|
*/
|
|
|
|
#include <asm/byteorder.h>
|
|
|
|
#define OLD_FLAT_VERSION 0x00000002L
|
|
#define OLD_FLAT_RELOC_TYPE_TEXT 0
|
|
#define OLD_FLAT_RELOC_TYPE_DATA 1
|
|
#define OLD_FLAT_RELOC_TYPE_BSS 2
|
|
|
|
typedef union {
|
|
unsigned long value;
|
|
struct {
|
|
# if defined(mc68000) && !defined(CONFIG_COLDFIRE)
|
|
signed long offset : 30;
|
|
unsigned long type : 2;
|
|
# define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */
|
|
# elif defined(__BIG_ENDIAN_BITFIELD)
|
|
unsigned long type : 2;
|
|
signed long offset : 30;
|
|
# define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */
|
|
# elif defined(__LITTLE_ENDIAN_BITFIELD)
|
|
signed long offset : 30;
|
|
unsigned long type : 2;
|
|
# define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */
|
|
# else
|
|
# error "Unknown bitfield order for flat files."
|
|
# endif
|
|
} reloc;
|
|
} flat_v2_reloc_t;
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _LINUX_FLAT_H */
|