#define TNAME (curtext?curtext->from.sym->name:noname)

#include <u.h>
#include <libc.h>
#include <bio.h>
#include "../8c/8.out.h"
#include "../cc/compat.h"

#define P ((Prog*)0)
#define S ((Sym*)0)
#define TNAME (curtext?curtext->from.sym->name:noname)

#define cput(c)\
{ *cbp++ = c;\
if(--cbc <= 0)\
cflush(); }

typedef struct Adr Adr;
typedef struct Prog Prog;
typedef struct Sym Sym;
typedef struct Auto Auto;
typedef struct Optab Optab;

struct Adr
{
union
{
long u0offset;
char u0scon[8];
Prog *u0cond; /* not used, but should be D_BRANCH */
Ieee u0ieee;
} u0;
union
{
Auto* u1autom;
Sym* u1sym;
} u1;
short type;
uchar index;
char scale;
};

#define offset u0.u0offset
#define scon u0.u0scon
#define cond u0.u0cond
#define ieee u0.u0ieee

#define autom u1.u1autom
#define sym u1.u1sym

struct Prog
{
Adr from;
Adr to;
Prog *forwd;
Prog* link;
Prog* pcond; /* work on this */
long pc;
long line;
short as;
char width; /* fake for DATA */
char ft; /* oclass cache */
char tt;
uchar mark; /* work on these */
uchar back;
};
struct Auto
{
Sym* asym;
Auto* link;
long aoffset;
short type;
};
struct Sym
{
char *name;
short type;
short version;
short become;
short frame;
uchar subtype;
char dupok;
ushort file;
long value;
long sig;
Sym* link;
};
struct Optab
{
short as;
uchar* ytab;
uchar prefix;
uchar op[20];
};

enum
{
STEXT = 1,
SDATA,
SBSS,
SDATA1,
SXREF,
SFILE,
SCONST,
SUNDEF,

SIMPORT,
SEXPORT,

NHASH = 10007,
NHUNK = 100000,
MINSIZ = 4,
STRINGSZ = 200,
MINLC = 1,
MAXIO = 8192,
MAXHIST = 20, /* limit of path elements for history symbols */

Yxxx = 0,
Ynone,
Yi0,
Yi1,
Yi8,
Yi32,
Yiauto,
Yal,
Ycl,
Yax,
Ycx,
Yrb,
Yrl,
Yrf,
Yf0,
Yrx,
Ymb,
Yml,
Ym,
Ybr,
Ycol,

Ycs, Yss, Yds, Yes, Yfs, Ygs,
Ygdtr, Yidtr, Yldtr, Ymsw, Ytask,
Ycr0, Ycr1, Ycr2, Ycr3, Ycr4, Ycr5, Ycr6, Ycr7,
Ydr0, Ydr1, Ydr2, Ydr3, Ydr4, Ydr5, Ydr6, Ydr7,
Ytr0, Ytr1, Ytr2, Ytr3, Ytr4, Ytr5, Ytr6, Ytr7,
Ymr, Ymm,
Yxr, Yxm,
Ymax,

Zxxx = 0,

Zlit,
Z_rp,
Zbr,
Zcall,
Zib_,
Zib_rp,
Zibo_m,
Zibo_m_xm,
Zil_,
Zil_rp,
Zilo_m,
Zjmp,
Zloop,
Zm_o,
Zm_r,
Zm_r_xm,
Zm_r_i_xm,
Zm_r_3d,
Zibm_r, /* mmx1,mmx2/mem64,imm8 */
Zaut_r,
Zo_m,
Zpseudo,
Zr_m,
Zr_m_xm,
Zr_m_i_xm,
Zrp_,
Z_ib,
Z_il,
Zm_ibo,
Zm_ilo,
Zib_rr,
Zil_rr,
Zclr,
Zbyte,
Zmov,
Zmax,

Px = 0,
Pe = 0x66, /* operand escape */
Pm = 0x0f, /* 2byte opcode escape */
Pq = 0xff, /* both escape */
Pb = 0xfe, /* byte operands */
Pf2 = 0xf2, /* xmm escape 1 */
Pf3 = 0xf3, /* xmm escape 2 */

Roffset = 22, /* no. bits for offset in relocation address */
Rindex = 10, /* no. bits for index in relocation address */
};

EXTERN union
{
struct
{
char obuf[MAXIO]; /* output buffer */
uchar ibuf[MAXIO]; /* input buffer */
} u;
char dbuf[1];
} buf;

#define cbuf u.obuf
#define xbuf u.ibuf

#pragma varargck type "A" int
#pragma varargck type "A" uint
#pragma varargck type "D" Adr*
#pragma varargck type "P" Prog*
#pragma varargck type "R" int
#pragma varargck type "R" uint
#pragma varargck type "S" char*

#pragma varargck argpos diag 1

EXTERN long HEADR;
EXTERN long HEADTYPE;
EXTERN long INITDAT;
EXTERN long INITRND;
EXTERN long INITTEXT;
EXTERN char* INITENTRY; /* entry point */
EXTERN Biobuf bso;
EXTERN long bsssize;
EXTERN long casepc;
EXTERN int cbc;
EXTERN char* cbp;
EXTERN char* pcstr;
EXTERN int cout;
EXTERN Auto* curauto;
EXTERN Auto* curhist;
EXTERN Prog* curp;
EXTERN Prog* curtext;
EXTERN Prog* datap;
EXTERN Prog* edatap;
EXTERN long datsize;
EXTERN char debug[128];
EXTERN char literal[32];
EXTERN Prog* etextp;
EXTERN Prog* firstp;
EXTERN char fnuxi8[8];
EXTERN char fnuxi4[4];
EXTERN Sym* hash[NHASH];
EXTERN Sym* histfrog[MAXHIST];
EXTERN int histfrogp;
EXTERN int histgen;
EXTERN char* library[50];
EXTERN char* libraryobj[50];
EXTERN int libraryp;
EXTERN int xrefresolv;
EXTERN char inuxi1[1];
EXTERN char inuxi2[2];
EXTERN char inuxi4[4];
EXTERN char ycover[Ymax*Ymax];
EXTERN uchar* andptr;
EXTERN uchar and[30];
EXTERN char reg[D_XNONE];
EXTERN Prog* lastp;
EXTERN long lcsize;
EXTERN int nerrors;
EXTERN long nsymbol;
EXTERN char* noname;
EXTERN char* outfile;
EXTERN long pc;
EXTERN long spsize;
EXTERN Sym* symlist;
EXTERN long symsize;
EXTERN Prog* textp;
EXTERN long textsize;
EXTERN int version;
EXTERN Prog zprg;
EXTERN int dtype;

EXTERN Adr* reloca;
EXTERN int doexp, dlm;
EXTERN int imports, nimports;
EXTERN int exports, nexports, allexport;
EXTERN char* EXPTAB;
EXTERN Prog undefp;

#define UP (&undefp)

extern Optab optab[];
extern Optab* opindex[];
extern char* anames[];

int Aconv(Fmt*);
int Dconv(Fmt*);
int Pconv(Fmt*);
int Rconv(Fmt*);
int Sconv(Fmt*);
void addhist(long, int);
Prog* appendp(Prog*);
void asmb(void);
void asmdyn(void);
void asmins(Prog*);
void asmlc(void);
void asmsp(void);
void asmsym(void);
long atolwhex(char*);
Prog* brchain(Prog*);
Prog* brloop(Prog*);
void cflush(void);
void ckoff(Sym*, long);
Prog* copyp(Prog*);
double cputime(void);
void datblk(long, long);
void diag(char*, ...);
void dodata(void);
void doinit(void);
void doprof1(void);
void doprof2(void);
void dostkoff(void);
void dynreloc(Sym*, ulong, int);
long entryvalue(void);
void errorexit(void);
void export(void);
int find1(long, int);
int find2(long, int);
void follow(void);
void histtoauto(void);
double ieeedtod(Ieee*);
long ieeedtof(Ieee*);
void import(void);
void ldobj(int, long, char*);
void loadlib(void);
void listinit(void);
Sym* lookup(char*, int);
void lput(long);
void lputl(long);
void main(int, char*[]);
void mkfwd(void);
void nuxiinit(void);
void objfile(char*);
int opsize(Prog*);
void patch(void);
Prog* prg(void);
void readundefs(char*, int);
int relinv(int);
long reuse(Prog*, Sym*);
long rnd(long, long);
void span(void);
void undef(void);
void undefsym(Sym*);
long vaddr(Adr*);
void wput(ushort);
void xdefine(char*, int, long);
void xfol(Prog*);
int zaddr(uchar*, Adr*, Sym*[]);
void zerosig(char*);

#pragma varargck type "D" Adr*
#pragma varargck type "P" Prog*
#pragma varargck type "R" int
#pragma varargck type "A" int