#include <u.h>#include <libc.h>#include <bio.h>#include "../7c/7.out.h" #ifndef	EXTERN#define	EXTERN	extern#endif #define	MAXALIGN	7 typedef	struct	Sym	Sym;typedef	struct	Ref	Ref;typedef	struct	Gen	Gen;typedef	struct	Io	Io;typedef	struct	Hist	Hist; #define	FPCHIP		1#define	NSYMB		500#define	BUFSIZ		8192#define	HISTSZ		20#define	NINCLUDE	10#define	NHUNK		10000#define	EOF		(-1)#define	IGN		(-2)#define	GETC()		((--fi.c < 0)? filbuf(): *fi.p++ & 0xff)#define	NHASH		503#define	STRINGSZ	200#define	NMACRO		10 #define	ALLOC(lhs, type)\	while(nhunk < sizeof(type))\		gethunk();\	lhs = (type*)hunk;\	nhunk -= sizeof(type);\	hunk += sizeof(type); #define	ALLOCN(lhs, len, n)\	if(lhs+len != hunk || nhunk < n) {\		while(nhunk <= len)\			gethunk();\		memmove(hunk, lhs, len);\		lhs = hunk;\		hunk += len;\		nhunk -= len;\	}\	hunk += n;\	nhunk -= n; struct	Sym{	Sym*	link;	Ref*	ref;	char*	macro;	vlong	value;	long	dummy_pad;	ushort	type;	char	*name;	char	sym;};#define	S	((Sym*)0) struct	Ref{	int	class;}; struct{	char*	p;	int	c;} fi; struct	Io{	Io*	link;	char	b[BUFSIZ];	char*	p;	short	c;	short	f;};#define	I	((Io*)0) struct{	Sym*	sym;	short	type;} h[NSYM]; struct	Gen{	Sym*	sym;	vlong	offset;	long	dummy_pad;	short	type;	short	reg;	short	name;	double	dval;	char	sval[8];}; struct	Hist{	Hist*	link;	char*	name;	long	line;	vlong	offset;};#define	H	((Hist*)0) enum{	CLAST,	CMACARG,	CMACRO,	CPREPROC,}; char	debug[256];Sym*	hash[NHASH];char*	Dlist[30];int	nDlist;Hist*	ehist;int	newflag;Hist*	hist;char*	hunk;char*	include[NINCLUDE];Io*	iofree;Io*	ionext;Io*	iostack;long	lineno;int	nerrors;long	nhunk;int	ninclude;Gen	nullgen;char*	outfile;int	pass;char*	pathname;vlong	pc;int	peekc;int	sym;char	symb[NSYMB];int	thechar;char*	thestring;long	thunk;Biobuf	obuf; void	errorexit(void);void	pushio(void);void	newio(void);void	newfile(char*, int);Sym*	slookup(char*);Sym*	lookup(void);void	syminit(Sym*);long	yylex(void);int	getc(void);int	getnsc(void);void	unget(int);int	escchar(int);void	cinit(void);void	pinit(char*);void	cclean(void);int	isreg(Gen*);void	outcode(int, Gen*, int, Gen*);void	zname(char*, int, int);void	zaddr(Gen*, int);void	ieeedtod(Ieee*, double);int	filbuf(void);Sym*	getsym(void);void	domacro(void);void	macund(void);void	macdef(void);void	macexpand(Sym*, char*);void	macinc(void);void	maclin(void);void	macprag(void);void	macif(int);void	macend(void);void	outhist(void);void	dodefine(char*);void	prfile(long);void	linehist(char*, int);void	gethunk(void);void	yyerror(char*, ...);int	yyparse(void);void	setinclude(char*);int	assemble(char*); /* *	system-dependent stuff from ../cc/compat.c */ enum				/* keep in synch with ../cc/cc.h */{	Plan9	= 1<<0,	Unix	= 1<<1,	Windows	= 1<<2,};int	mywait(int*);int	mycreat(char*, int);int	systemtype(int);int	pathchar(void);char*	mygetwd(char*, int);int	myexec(char*, char*[]);int	mydup(int, int);int	myfork(void);int	mypipe(int*);void*	mysbrk(ulong);