/*
   * 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 _UAPI_LINUX_FLAT_H
  #define _UAPI_LINUX_FLAT_H
  
  
  #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 */
  
  
  
  #endif /* _UAPI_LINUX_FLAT_H */