ref: 8188b4f4f0e07b6669e6ae3c6c1099af917eaab4
dir: /sys/src/cmd/7l/l.h/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include "../7c/7.out.h"
#include "../cc/compat.h"
#define LIBNAMELEN 300
void addlibpath(char*);
int fileexists(char*);
int find1(long, int);
char* findlib(char*);
typedef struct Adr Adr;
typedef struct Autom Auto;
typedef struct Count Count;
typedef struct Ieee Ieee;
typedef struct Prog Prog;
typedef struct Sym Sym;
typedef struct Mask Mask;
typedef struct Optab Optab;
typedef struct Oprang Oprang;
typedef uchar Opcross[32][2][32];
#define P ((Prog*)0)
#define S ((Sym*)0)
#define TNAME (curtext&&curtext->from.sym?curtext->from.sym->name:noname)
struct Adr
{
union
{
vlong u0offset;
char* u0sval;
Ieee* u0ieee;
} u0;
union
{
Auto* u1autom;
Sym* u1sym;
} u1;
char type;
char reg;
char name;
char class;
};
#define offset u0.u0offset
#define sval u0.u0sval
#define ieee u0.u0ieee
#define autom u1.u1autom
#define sym u1.u1sym
struct Prog
{
Adr from;
Adr from3; /* third register operand */
Adr to;
union
{
long u0regused;
Prog* u0forwd;
} u0;
Prog* cond;
Prog* link;
vlong pc;
long line;
uchar mark;
ushort optab;
ushort as;
uchar reg;
};
#define regused u0.u0regused
#define forwd u0.u0forwd
struct Sym
{
char *name;
short type;
short version;
short become;
short frame;
char dupok;
uchar subtype;
ushort file;
vlong value;
long sig;
Sym* link;
};
#define SIGNINTERN (1729*325*1729) /* signature of internal functions such as _div */
struct Autom
{
Sym* asym;
Auto* link;
long aoffset;
short type;
};
struct Optab
{
ushort as;
char a1;
char a2;
char a3;
char type;
char size;
char param;
char flag;
};
struct Oprang
{
Optab* start;
Optab* stop;
};
struct Mask
{
uchar s;
uchar e;
uchar r;
uvlong v;
};
enum
{
STEXT = 1,
SDATA,
SBSS,
SDATA1,
SXREF,
SLEAF,
SFILE,
SCONST,
SSTRING,
SUNDEF,
SIMPORT,
SEXPORT,
LFROM = 1<<0,
LTO = 1<<1,
LPOOL = 1<<2,
C_NONE = 0,
C_REG,
C_RSP, /* D_REG or D_SP */
C_SHIFT, /* D_SHIFT: shift type, amount, value */
C_EXTREG, /* D_EXTREG: reg, ext type, shift */
C_FREG,
C_SPR,
C_COND,
C_ZCON, /* 0 (matching C_REG, not C_RSP, allowing REGZERO) */
C_ADDCON0, /* 12-bit unsigned, unshifted */
C_ADDCON, /* 12-bit unsigned, shifted left by 0 or 12 */
C_MOVCON, /* generated by a 16-bit constant, optionally inverted and/or shifted by multiple of 16 */
C_BITCON, /* bimm32/bimm64 */
C_BITCON32, /* bimm32 */
C_BITCON64, /* bimm64 */
C_ABCON, /* could be C_ADDCON or C_BITCON */
C_MBCON, /* could be C_MOVCON or C_BITCON */
C_LCON, /* 32-bit constant */
C_FCON, /* floating-point constant */
C_VCON, /* 64-bit constant */
C_AACON, /* ADDCON offset in auto constant $a(FP) */
C_LACON, /* 32-bit offset in auto constant $a(FP) */
C_AECON, /* ADDCON offset in extern constant $e(SB) */
C_SBRA,
C_LBRA,
C_NPAUTO, /* -512 <= x < 0, 0 mod 8 */
C_NSAUTO, /* -256 <= x < 0 */
C_PSAUTO, /* 0 to 255 */
C_PPAUTO, /* 0 to 504, 0 mod 8 */
C_UAUTO4K, /* 0 to 4095 */
C_UAUTO8K, /* 0 to 8190, 0 mod 2 */
C_UAUTO16K, /* 0 to 16380, 0 mod 4 */
C_UAUTO32K, /* 0 to 32760, 0 mod 8 */
C_UAUTO64K, /* 0 to 65520, 0 mod 16 */
C_LAUTO, /* any other 32-bit constant */
C_SEXT1, /* 0 to 4095, direct */
C_SEXT2, /* 0 to 8190 */
C_SEXT4, /* 0 to 16380 */
C_SEXT8, /* 0 to 32760 */
C_SEXT16, /* 0 to 65520 */
C_LEXT,
C_NPOREG, /* mirror NPAUTO etc, except for ZOREG */
C_NSOREG,
C_ZOREG,
C_PSOREG,
C_PPOREG,
C_UOREG4K,
C_UOREG8K,
C_UOREG16K,
C_UOREG32K,
C_UOREG64K,
C_LOREG,
C_ADDR, /* relocatable address for dynamic loading */
C_ROFF, /* register offset (inc register extended) */
C_XPOST,
C_XPRE,
C_VREG,
C_GOK,
C_NCLASS, /* must be last */
/* mark flags */
FOLL = 1<<0,
LABEL = 1<<1,
LEAF = 1<<2,
FLOAT = 1<<3,
BRANCH = 1<<4,
LOAD = 1<<5,
SYNC = 1<<6,
NOSCHED = 1<<7,
MINSIZ = 64,
Roffset = 22, /* no. bits for offset in relocation address */
Rindex = 10, /* no. bits for index in relocation address */
STACKALIGN = 16, /* alignment of stack */
PCSZ= 8, /* size of PC */
};
enum
{
STRINGSZ = 200,
NHASH = 10007,
NHUNK = 100000,
MAXIO = 8192,
MAXHIST = 20, /* limit of path elements for history symbols */
};
EXTERN union
{
struct
{
uchar obuf[MAXIO]; /* output buffer */
uchar ibuf[MAXIO]; /* input buffer */
} u;
char dbuf[1];
} buf;
#define cbuf u.obuf
#define xbuf u.ibuf
EXTERN long HEADR; /* length of header */
EXTERN int HEADTYPE; /* type of header */
EXTERN long INITDAT; /* data location */
EXTERN long INITRND; /* data round above text location */
EXTERN long INITTEXT; /* text location */
EXTERN long INITTEXTP; /* text location (physical) */
EXTERN char* INITENTRY; /* entry point */
EXTERN long autosize;
EXTERN Biobuf bso;
EXTERN long bsssize;
EXTERN int cbc;
EXTERN uchar* cbp;
EXTERN int cout;
EXTERN Auto* curauto;
EXTERN Auto* curhist;
EXTERN Prog* curp;
EXTERN Prog* curtext;
EXTERN Prog* datap;
EXTERN long datsize;
EXTERN char debug[128];
EXTERN Prog* etextp;
EXTERN Prog* firstp;
EXTERN char fnuxi4[4];
EXTERN char fnuxi8[8];
EXTERN char inuxi1[1];
EXTERN char inuxi2[2];
EXTERN char inuxi4[4];
EXTERN uchar inuxi8[8];
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 Prog* lastp;
EXTERN long lcsize;
EXTERN char literal[32];
EXTERN int nerrors;
EXTERN char* noname;
EXTERN vlong instoffset;
EXTERN Opcross opcross[8];
EXTERN char* outfile;
EXTERN vlong pc;
EXTERN uchar repop[ALAST];
EXTERN long symsize;
EXTERN Prog* textp;
EXTERN vlong textsize;
EXTERN int version;
EXTERN char xcmp[C_NCLASS][C_NCLASS];
EXTERN int xrefresolv;
EXTERN Prog zprg;
EXTERN int dtype;
EXTERN int doexp, dlm;
EXTERN int imports, nimports;
EXTERN int exports, nexports;
EXTERN char* EXPTAB;
EXTERN Prog undefp;
#define UP (&undefp)
extern char* anames[];
extern char* cnames[];
extern Optab optab[];
EXTERN Prog* blitrl;
EXTERN Prog* elitrl;
#pragma varargck argpos diag 1
#pragma varargck type "A" int
#pragma varargck type "A" uint
#pragma varargck type "C" int
#pragma varargck type "D" Adr*
#pragma varargck type "N" Adr*
#pragma varargck type "P" Prog*
#pragma varargck type "S" char*
int Aconv(Fmt*);
int Cconv(Fmt*);
int Dconv(Fmt*);
int Nconv(Fmt*);
int Pconv(Fmt*);
int Rconv(Fmt*);
int Sconv(Fmt*);
int aclass(Adr*);
void addpool(Prog*, Adr*);
vlong atolwhex(char*);
void asmb(void);
void asmdyn(void);
void asmlc(void);
void asmout(Prog*, Optab*);
void asmsym(void);
Prog* brchain(Prog*);
Prog* brloop(Prog*);
void buildop(void);
void buildrep(int, int);
void cflush(void);
void ckoff(Sym*, long);
int chipfloat(Ieee*);
int cmp(int, int);
int compound(Prog*);
void cput(int);
void datblk(long, long, int);
void diag(char*, ...);
void dodata(void);
void doprof1(void);
void doprof2(void);
void dynreloc(Sym*, long, int);
vlong entryvalue(void);
void errorexit(void);
void export(void);
void follow(void);
void histtoauto(void);
int isnop(Prog*);
double ieeedtod(Ieee*);
long ieeedtof(Ieee*);
void import(void);
void ldobj(int, long, char*);
void listinit(void);
void llput(vlong);
void llputl(vlong);
void loadlib(void);
Sym* lookup(char*, int);
void lput(long);
void lputl(long);
void mkfwd(void);
int movcon(vlong);
void names(void);
void nocache(Prog*);
void nuxiinit(void);
void objfile(char*);
vlong offsetshift(vlong, int);
Optab* oplook(Prog*);
void patch(void);
int pseudo(Prog*);
void prasm(Prog*);
Prog* prg(void);
void putsymb(char*, int, vlong, int);
void readundefs(char*, int);
long regoff(Adr*);
int relinv(int);
vlong rnd(vlong, long);
void span(void);
void undef(void);
void wput(long);
void wputl(long);
void noops(void);
Mask* findmask(uvlong);
void xdefine(char*, int, long);
void xfol(Prog*);
void zerosig(char*);
#pragma varargck type "R" int
/* for ../ld */
#define isbranch(a) ((a) == AB)
#define iscall(a) ((a) == ABL)
#define isreturn(a) ((a) == ARETURN || (a) == ARET || (a) == AERET)
#define branchop() AB
#define canfollow(a) ((a) != ATEXT && (a) != ABCASE)