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struct coffsect
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{
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	char	name[8];
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	ulong	phys;
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	ulong	virt;
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	ulong	size;
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	ulong	fptr;
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	ulong	fptrreloc;
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	ulong	fptrlineno;
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	ulong	nrelocnlineno;
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	ulong	flags;
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};
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/*
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 * proprietary exec headers, needed to bootstrap various machines
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 */
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struct mipsexec
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{
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	short	mmagic;		/* (0x160) mips magic number */
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	short	nscns;		/* (unused) number of sections */
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	long	timdat;		/* (unused) time & date stamp */
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	long	symptr;		/* offset to symbol table */
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	long	nsyms;		/* size of symbol table */
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	short	opthdr;		/* (0x38) sizeof(optional hdr) */
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	short	pcszs;		/* flags */
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	short	amagic;		/* see above */
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	short	vstamp;		/* version stamp */
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	long	tsize;		/* text size in bytes */
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	long	dsize;		/* initialized data */
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	long	bsize;		/* uninitialized data */
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	long	mentry;		/* entry pt.				*/
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	long	text_start;	/* base of text used for this file	*/
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	long	data_start;	/* base of data used for this file	*/
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	long	bss_start;	/* base of bss used for this file	*/
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	long	gprmask;	/* general purpose register mask	*/
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union{
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	long	cprmask[4];	/* co-processor register masks		*/
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	long	pcsize;
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};
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	long	gp_value;	/* the gp value used for this object    */
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};
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struct mips4kexec
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{
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	struct mipsexec	h;
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	struct coffsect	itexts;
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	struct coffsect idatas;
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	struct coffsect ibsss;
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};
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struct sparcexec
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{
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	short	sjunk;		/* dynamic bit and version number */
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	short	smagic;		/* 0407 */
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	ulong	stext;
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	ulong	sdata;
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	ulong	sbss;
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	ulong	ssyms;
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	ulong	sentry;
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	ulong	strsize;
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	ulong	sdrsize;
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};
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struct nextexec
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{
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	struct	nexthdr{
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		ulong	nmagic;
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		ulong	ncputype;
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		ulong	ncpusubtype;
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		ulong	nfiletype;
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		ulong	ncmds;
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		ulong	nsizeofcmds;
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		ulong	nflags;
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	};
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	struct nextcmd{
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		ulong	cmd;
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		ulong	cmdsize;
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		uchar	segname[16];
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		ulong	vmaddr;
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		ulong	vmsize;
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		ulong	fileoff;
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		ulong	filesize;
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		ulong	maxprot;
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		ulong	initprot;
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		ulong	nsects;
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		ulong	flags;
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	}textc;
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	struct nextsect{
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		char	sectname[16];
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		char	segname[16];
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		ulong	addr;
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		ulong	size;
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		ulong	offset;
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		ulong	align;
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		ulong	reloff;
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		ulong	nreloc;
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		ulong	flags;
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		ulong	reserved1;
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		ulong	reserved2;
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	}texts;
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	struct nextcmd	datac;
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	struct nextsect	datas;
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	struct nextsect	bsss;
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	struct nextsym{
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		ulong	cmd;
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		ulong	cmdsize;
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		ulong	symoff;
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		ulong	nsyms;
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		ulong	spoff;
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		ulong	pcoff;
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	}symc;
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};
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struct i386exec
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{
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	struct	i386coff{
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		ulong	isectmagic;
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		ulong	itime;
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		ulong	isyms;
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		ulong	insyms;
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		ulong	iflags;
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	};
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	struct	i386hdr{
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		ulong	imagic;
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		ulong	itextsize;
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		ulong	idatasize;
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		ulong	ibsssize;
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		ulong	ientry;
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		ulong	itextstart;
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		ulong	idatastart;
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	};
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	struct coffsect	itexts;
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	struct coffsect idatas;
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	struct coffsect ibsss;
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	struct coffsect icomments;
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};