cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

flat.h (2629B)

      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#define	FLAT_VERSION			0x00000004L
     14
     15/*
     16 * To make everything easier to port and manage cross platform
     17 * development,  all fields are in network byte order.
     18 */
     19
     20struct flat_hdr {
     21	char	magic[4];
     22	__be32	rev;          /* version (as above) */
     23	__be32	entry;        /* Offset of first executable instruction
     24				 with text segment from beginning of file */
     25	__be32	data_start;   /* Offset of data segment from beginning of
     26				 file */
     27	__be32	data_end;     /* Offset of end of data segment from beginning
     28				 of file */
     29	__be32	bss_end;      /* Offset of end of bss segment from beginning
     30				 of file */
     31
     32	/* (It is assumed that data_end through bss_end forms the bss segment.) */
     33
     34	__be32	stack_size;   /* Size of stack, in bytes */
     35	__be32	reloc_start;  /* Offset of relocation records from beginning of
     36				 file */
     37	__be32	reloc_count;  /* Number of relocation records */
     38	__be32	flags;
     39	__be32	build_date;   /* When the program/library was built */
     40	__u32	filler[5];    /* Reservered, set to zero */
     41};
     42
     43#define FLAT_FLAG_RAM    0x0001 /* load program entirely into RAM */
     44#define FLAT_FLAG_GOTPIC 0x0002 /* program is PIC with GOT */
     45#define FLAT_FLAG_GZIP   0x0004 /* all but the header is compressed */
     46#define FLAT_FLAG_GZDATA 0x0008 /* only data/relocs are compressed (for XIP) */
     47#define FLAT_FLAG_KTRACE 0x0010 /* output useful kernel trace for debugging */
     48
     49/*
     50 * While it would be nice to keep this header clean,  users of older
     51 * tools still need this support in the kernel.  So this section is
     52 * purely for compatibility with old tool chains.
     53 *
     54 * DO NOT make changes or enhancements to the old format please,  just work
     55 *        with the format above,  except to fix bugs with old format support.
     56 */
     57
     58#define	OLD_FLAT_VERSION			0x00000002L
     59#define OLD_FLAT_RELOC_TYPE_TEXT	0
     60#define OLD_FLAT_RELOC_TYPE_DATA	1
     61#define OLD_FLAT_RELOC_TYPE_BSS		2
     62
     63typedef union {
     64	u32		value;
     65	struct {
     66#if defined(__LITTLE_ENDIAN_BITFIELD) || \
     67    (defined(mc68000) && !defined(CONFIG_COLDFIRE))
     68		s32	offset : 30;
     69		u32	type : 2;
     70# elif defined(__BIG_ENDIAN_BITFIELD)
     71		u32	type : 2;
     72		s32	offset : 30;
     73# else
     74#   	error "Unknown bitfield order for flat files."
     75# endif
     76	} reloc;
     77} flat_v2_reloc_t;
     78
     79#endif /* _LINUX_FLAT_H */