i386.h

这个是LINUX下的GDB调度工具的源码

/* coff information for Intel 386/486.
   
   Copyright 2001 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#define L_LNNO_SIZE 2
#define INCLUDE_COMDAT_FIELDS_IN_AUXENT
#include "coff/external.h"

/* Bits for f_flags:
 	F_RELFLG	relocation info stripped from file
 	F_EXEC		file is executable (no unresolved external references)
 	F_LNNO		line numbers stripped from file
 	F_LSYMS		local symbols stripped from file
 	F_AR32WR	file has byte ordering of an AR32WR machine (e.g. vax).  */

#define F_RELFLG	(0x0001)
#define F_EXEC		(0x0002)
#define F_LNNO		(0x0004)
#define F_LSYMS		(0x0008)

#define	I386MAGIC	0x14c
#define I386PTXMAGIC	0x154
#define I386AIXMAGIC	0x175

/* This is Lynx's all-platform magic number for executables. */

#define LYNXCOFFMAGIC	0415

#define I386BADMAG(x) (  ((x).f_magic != I386MAGIC) \
		       && (x).f_magic != I386AIXMAGIC \
		       && (x).f_magic != I386PTXMAGIC \
		       && (x).f_magic != LYNXCOFFMAGIC)

#define OMAGIC          0404    /* object files, eg as output */
#define ZMAGIC          0413    /* demand load format, eg normal ld output */
#define STMAGIC		0401	/* target shlib */
#define SHMAGIC		0443	/* host   shlib */

/* define some NT default values */
/*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
#define NT_SECTION_ALIGNMENT 0x1000
#define NT_FILE_ALIGNMENT    0x200
#define NT_DEF_RESERVE       0x100000
#define NT_DEF_COMMIT        0x1000

/********************** RELOCATION DIRECTIVES **********************/

struct external_reloc
{
  char r_vaddr[4];
  char r_symndx[4];
  char r_type[2];
};

#define RELOC struct external_reloc
#define RELSZ 10