/* *	Architecture-dependent application data */#include "a.out.h"/* *	Supported architectures: *		mips, *		68020, *		i386, *		sparc, *		i960 (limited) *		3210DSP (limited) *		mips2 (R4000) *		arm (limited) */enum{	MMIPS,			/* machine types */	MSPARC,	M68020,	MI386,	MI960,	M3210,	MMIPS2,	NMIPS2,	M29000,	MARM,	MPOWER,				/* types of exectables */	FNONE = 0,		/* unidentified */	FMIPS,			/* v.out */	FMIPSB,			/* mips bootable */	FSPARC,			/* k.out */	FSPARCB,		/* Sparc bootable */	F68020,			/* 2.out */	F68020B,		/* 68020 bootable */	FNEXTB,			/* Next bootable */	FI386,			/* 8.out */	FI386B,			/* I386 bootable */	FI960,			/* 6.out */	FI960B,			/* I960 bootable */	F3210,			/* x.out */	FMIPS2BE,			/* 4.out */	F29000,			/* 9.out */	FARM,			/* 5.out */	FARMB,			/* ARM bootable */	FPOWER,			/* q.out */	FPOWERB,		/* power pc bootable */	FMIPS2LE,		/* 4k little endian */ 	ANONE = 0,		/* dissembler types */	AMIPS,	AMIPSCO,		/* native mips */	ASPARC,	ASUNSPARC,		/* native sun */	A68020,	AI386,	AI8086,			/* oh god */	AI960,	A29000,	AARM,	APOWER,				/* object file types */	Obj68020 = 0,		/* .2 */	ObjSparc,		/* .k */	ObjMips,		/* .v */	Obj386,			/* .8 */	Obj960,			/* .6 */	Obj3210,		/* .x */	ObjMips2,		/* .4 */	Obj29000,		/* .9 */	ObjArm,			/* .5 */	ObjPower,		/* .q */	ObjMips2le,		/* .0 */	Maxobjtype, 	CNONE  = 0,		/* symbol table classes */	CAUTO,	CPARAM,	CSTAB,	CTEXT,	CDATA,	CANY			/* to look for any class */}; typedef	struct	Map	Map;typedef struct	Symbol	Symbol;typedef	struct	Reglist	Reglist;typedef	struct	Mach	Mach;typedef	struct	Machdata Machdata;typedef struct	segment	segment; typedef	int	(*Rsegio)(segment*, ulong, long, char*, int); /* * 	Structure to map a segment to a position in a file */struct Map {	int	nsegs;			/* number of segments */	struct segment {		/* per-segment map */		char	*name;		/* the segment name */		int	fd;		/* file descriptor */		int	inuse;		/* in use - not in use */		ulong	b;		/* base */		ulong	e;		/* end */		ulong	f;		/* offset within file */		Rsegio	mget;	/* special get if not 0 */		Rsegio	mput;	/* special put if not 0 */	} seg[1];			/* actually n of these */};   /* *	Internal structure describing a symbol table entry */struct Symbol {	void 	*handle;		/* used internally - owning func */	/*struct {*/		char	*name;		long	value;		/* address or stack offset */		char	type;		/* as in a.out.h */		char	class;		/* as above */	/*};*/}; /* *	machine register description */struct Reglist {	char	*rname;			/* register name */	short	roffs;			/* offset in u-block */	char	rflags;			/* INTEGER/FLOAT, WRITABLE */	char	rformat;		/* print format: 'x', 'X', 'f', '8' */}; enum {				/* bits in rflags field */	RINT	= (0<<0),	RFLT	= (1<<0),	RRDONLY	= (1<<1)};/* *	Machine-dependent data is stored in two structures: *		Mach  - miscellaneous general parameters *		Machdata - jump vector of service functions used by debuggers * *	Mach is defined in 2.c, 4.c, v.c, k.c, 8.c, 6.c and set in executable.c * *	Machdata is defined in 2db.c, 4db.c, vdb.c, kdb.c, 8db.c, and 6db.c *		and set in the debugger startup. */  struct Mach{	char	*name;	int	mtype;			/* machine type code */	Reglist *reglist;		/* register set */	ulong	regsize;		/* sizeof registers in bytes*/	ulong	fpregsize;		/* sizeof fp registers in bytes*/	char	*pc;			/* pc name */	char	*sp;			/* sp name */	char	*link;			/* link register name */	char	*sbreg;			/* static base register name */	ulong	sb;			/* static base register value */	int	pgsize;			/* page size */	ulong	kbase;			/* kernel base address */	ulong	ktmask;			/* ktzero = kbase & ~ktmask */	int	pcquant;		/* quantization of pc */	int	szaddr;			/* sizeof(void*) */	int	szreg;			/* sizeof(register) */	int	szfloat;		/* sizeof(float) */	int	szdouble;		/* sizeof(double) */}; extern	Mach	*mach;			/* Current machine */ typedef vlong	(*Rgetter)(Map*, char*);typedef	void	(*Tracer)(Map*, ulong, ulong, Symbol*); struct	Machdata {		/* Machine-dependent debugger support */	uchar	bpinst[4];			/* break point instr. */	short	bpsize;				/* size of break point instr. */ 	ushort	(*swab)(ushort);		/* short to local byte order */	long	(*swal)(long);			/* long to local byte order */	vlong	(*swav)(vlong);			/* vlong to local byte order */	int	(*ctrace)(Map*, ulong, ulong, ulong, Tracer); /* C traceback */	ulong	(*findframe)(Map*, ulong, ulong, ulong, ulong);/* frame finder */	char*	(*excep)(Map*, Rgetter);	/* last exception */	ulong	(*bpfix)(ulong);		/* breakpoint fixup */	int	(*sftos)(char*, int, void*);	/* single precision float */	int	(*dftos)(char*, int, void*);	/* double precision float */	int	(*foll)(Map*, ulong, Rgetter, ulong*);	/* follow set */	int	(*das)(Map*, ulong, char, char*, int);	/* symbolic disassembly */	int	(*hexinst)(Map*, ulong, char*, int); 	/* hex disassembly */	int	(*instsize)(Map*, ulong);	/* instruction size */}; /* *	Common a.out header describing all architectures */typedef struct Fhdr{	char	*name;		/* identifier of executable */	short	type;		/* file type - see codes above*/	short	hdrsz;		/* size of this header */	long	magic;		/* magic number */	long	txtaddr;	/* text address */	long	entry;		/* entry point */	long	txtsz;		/* text size */	long	txtoff;		/* start of text in file */	long	dataddr;	/* start of data segment */	long	datsz;		/* size of data seg */	long	datoff;		/* offset to data seg in file */	long	bsssz;		/* size of bss */	long	symsz;		/* size of symbol table */	long	symoff;		/* offset of symbol table in file */	long	sppcsz;		/* size of sp-pc table */	long	sppcoff;	/* offset of sp-pc table in file */	long	lnpcsz;		/* size of line number-pc table */	long	lnpcoff;	/* size of line number-pc table */} Fhdr; extern	int	asstype;		/* dissembler type - machdata.c */extern	Machdata *machdata;		/* jump vector - machdata.c */ Map*		attachproc(int, int, int, Fhdr*);Map*		attachremt(int, Fhdr*);int		beieee80ftos(char*, int, void*);int		beieeesftos(char*, int, void*);int		beieeedftos(char*, int, void*);ushort		beswab(ushort);long		beswal(long);vlong		beswav(vlong);int		cisctrace(Map*, ulong, ulong, ulong, Tracer);ulong		ciscframe(Map*, ulong, ulong, ulong, ulong);int		crackhdr(int fd, Fhdr*);long		file2pc(char*, ulong);int		fileelem(Sym**, uchar *, char*, int);int		fileline(char*, int, ulong);int		filesym(int, char*, int);int		findlocal(Symbol*, char*, Symbol*);int		findseg(Map*, char*);int		findsym(long, int, Symbol *);int		fnbound(long, ulong*);int		fpformat(Map*, Reglist*, char*, int, int);int		get1(Map*, ulong, uchar*, int);int		get2(Map*, ulong, ushort*);int		get4(Map*, ulong, long*);int		get8(Map*, ulong, vlong*);int		getauto(Symbol*, int, int, Symbol*);Sym*		getsym(int);int		globalsym(Symbol *, int);int		gsymoff(char*, int, long, int);char*		_hexify(char*, ulong, int);int		ieeesftos(char*, int, ulong);int		ieeedftos(char*, int, ulong, ulong);int		isar(Biobuf*);int		leieee80ftos(char*, int, void*);int		leieeesftos(char*, int, void*);int		leieeedftos(char*, int, void*);ushort		leswab(ushort);long		leswal(long);vlong		leswav(vlong);long		line2addr(ulong, ulong, ulong);Map*		loadmap(Map*, int, Fhdr*);int		localaddr(Map*, char*, char*, long*, Rgetter);int		localsym(Symbol*, int);int		lookup(char*, char*, Symbol*);void		machbytype(int);int		machbyname(char*);int		nextar(Biobuf*, int, char*);Map*		newmap(Map*, int);void		objtraverse(void(*)(Sym*, void*), void*);int		objtype(Biobuf*, char**);long		pc2sp(ulong);long		pc2line(ulong);int		put1(Map*, ulong, uchar*, int);int		put2(Map*, ulong, ushort);int		put4(Map*, ulong, long);int		put8(Map*, ulong, vlong);int		readar(Biobuf*, int, int, int);int		readobj(Biobuf*, int);struct segment*	reloc(Map*, ulong, long*);ulong		riscframe(Map*, ulong, ulong, ulong, ulong);int		risctrace(Map*, ulong, ulong, ulong, Tracer);int		setmap(Map*, int, ulong, ulong, ulong, char*);void		setmapio(Map*, int, Rsegio, Rsegio);Sym*		symbase(long*);int		syminit(int, Fhdr*);int		symoff(char*, int, long, int);void		textseg(ulong, Fhdr*);int		textsym(Symbol*, int);void		unusemap(Map*, int);