[net-next-2.6.git] / include / linux / flat.h

/*
 * 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 */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (C) 2002-2003 David McCullough <davidm@snapgear.com>
	3	* Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>
	4	* The Silver Hammer Group, Ltd.
	5	*
	6	* This file provides the definitions and structures needed to
	7	* support uClinux flat-format executables.
	8	*/
	9
	10	#ifndef _LINUX_FLAT_H
	11	#define _LINUX_FLAT_H
	12
	13	#ifdef __KERNEL__
	14	#include <asm/flat.h>
	15	#endif
	16
	17	#define FLAT_VERSION 0x00000004L
	18
	19	#ifdef CONFIG_BINFMT_SHARED_FLAT
	20	#define MAX_SHARED_LIBS (4)
	21	#else
	22	#define MAX_SHARED_LIBS (1)
	23	#endif
	24
	25	/*
	26	* To make everything easier to port and manage cross platform
	27	* development, all fields are in network byte order.
	28	*/
	29
	30	struct flat_hdr {
	31	char magic[4];
	32	unsigned long rev; /* version (as above) */
	33	unsigned long entry; /* Offset of first executable instruction
	34	with text segment from beginning of file */
	35	unsigned long data_start; /* Offset of data segment from beginning of
	36	file */
	37	unsigned long data_end; /* Offset of end of data segment
	38	from beginning of file */
	39	unsigned long bss_end; /* Offset of end of bss segment from beginning
	40	of file */
	41
	42	/* (It is assumed that data_end through bss_end forms the bss segment.) */
	43
	44	unsigned long stack_size; /* Size of stack, in bytes */
	45	unsigned long reloc_start; /* Offset of relocation records from
	46	beginning of file */
	47	unsigned long reloc_count; /* Number of relocation records */
	48	unsigned long flags;
	49	unsigned long build_date; /* When the program/library was built */
	50	unsigned long filler[5]; /* Reservered, set to zero */
	51	};
	52
	53	#define FLAT_FLAG_RAM 0x0001 /* load program entirely into RAM */
	54	#define FLAT_FLAG_GOTPIC 0x0002 /* program is PIC with GOT */
	55	#define FLAT_FLAG_GZIP 0x0004 /* all but the header is compressed */
	56	#define FLAT_FLAG_GZDATA 0x0008 /* only data/relocs are compressed (for XIP) */
	57	#define FLAT_FLAG_KTRACE 0x0010 /* output useful kernel trace for debugging */
	58
	59
	60	#ifdef __KERNEL__ /* so systems without linux headers can compile the apps */
	61	/*
	62	* While it would be nice to keep this header clean, users of older
	63	* tools still need this support in the kernel. So this section is
	64	* purely for compatibility with old tool chains.
65	*
66	* DO NOT make changes or enhancements to the old format please, just work
67	* with the format above, except to fix bugs with old format support.
68	*/
69
70	#include <asm/byteorder.h>
71
72	#define OLD_FLAT_VERSION 0x00000002L
73	#define OLD_FLAT_RELOC_TYPE_TEXT 0
74	#define OLD_FLAT_RELOC_TYPE_DATA 1
75	#define OLD_FLAT_RELOC_TYPE_BSS 2
76
77	typedef union {
78	unsigned long value;
79	struct {
80	# if defined(mc68000) && !defined(CONFIG_COLDFIRE)
81	signed long offset : 30;
82	unsigned long type : 2;
83	# define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */
84	# elif defined(__BIG_ENDIAN_BITFIELD)
85	unsigned long type : 2;
86	signed long offset : 30;
87	# define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */
88	# elif defined(__LITTLE_ENDIAN_BITFIELD)
89	signed long offset : 30;
90	unsigned long type : 2;
91	# define OLD_FLAT_FLAG_RAM 0x1 /* load program entirely into RAM */
92	# else
93	# error "Unknown bitfield order for flat files."
94	# endif
95	} reloc;
96	} flat_v2_reloc_t;
97
98	#endif /* __KERNEL__ */
99
100	#endif /* _LINUX_FLAT_H */