SEGNONE = -2, /* file map segment names */
SEGANY = -1,
SEGTEXT = 0, /* index into seg array of map */
SEGDATA = 1,
SEGUBLK = 2,
SEGREGS = 3,
MAXSEGS = 4,
CNONE = 0, /* symbol table classes */
CAUTO = 1,
CPARAM = 2,
CSTAB = 3,
CTEXT = 4,
CDATA = 5,
CANY = 6, /* to look for any class */
};
/*
* Structure to map a segment to a position in a file
*/
typedef struct map Map;
struct map {
int fd; /* file descriptor associated with map */
struct { /* per-segment map */
char *name; /* the segment name */
int inuse; /* in use - not in use */
ulong b; /* base */
ulong e; /* end */
ulong f; /* offset within file */
} seg[MAXSEGS];
};
/*
* machine register description
*/
typedef struct reglist Reglist;
struct reglist {
char *rname; /* register name */
short roffs; /* offset in u-block */
char rfloat; /* 0=>integer; 1=>float */
char rformat; /* print format: 'x', 'X', 'f', '8' */
ulong rval; /* current register value */
};
/*
* data describing generic machine characteristics
* defined in 2.c, v.c, k.c, 8.c, 6.c, z.c in /sys/src/libmach
* set in executable.c
*/
typedef struct Mach Mach;
struct Mach{
char *name;
Reglist *reglist; /* register set */
int minreg; /* minimum register */
int maxreg; /* maximum register */
ulong pc; /* pc offset */
ulong sp; /* sp offset */
ulong link; /* link register offset */
ulong retreg; /* function return register */
int firstwr; /* first writable register */
int pgsize; /* page size */
ulong kbase; /* kernel base address: uarea */
ulong ktmask; /* ktzero = kbase & ~ktmask */
ulong kspoff; /* offset of ksp in /proc/proc */
ulong kspdelta; /* correction to ksp value */
ulong kpcoff; /* offset of kpc in /proc/proc */
ulong kpcdelta; /* correction to kpc value */
ulong scalloff; /* offset to sys call # in ublk */
int pcquant; /* quantization of pc */
char *sbreg; /* static base register name */
ulong sb; /* value */
int szaddr; /* sizeof(void*) */
int szreg; /* sizeof(register) */
int szfloat; /* sizeof(float) */
int szdouble; /* sizeof(double) */
};
struct machdata {
uchar bpinst[4]; /* break point instr. */
short bpsize; /* size of break point instr. */
void (*init)(void); /* init routine */
ushort (*swab)(ushort); /* convert short to local byte order */
long (*swal)(long); /* convert long to local byte order */
void (*ctrace)(int); /* print C traceback */
ulong (*findframe)(ulong); /* frame finder */
void (*fpprint)(int); /* print fp regs */
void (*rsnarf)(Reglist *); /* grab registers */
void (*rrest)(Reglist *); /* restore registers */
void (*excep)(void); /* print exception */
ulong (*bpfix)(ulong); /* breakpoint fixup */
void (*sfpout)(char*); /* format single precision number */
void (*dfpout)(char*); /* format double precision number */
int (*foll)(ulong, ulong*); /* following instructions */
void (*printins)(Map*, char, int); /* print an instruction */
void (*printdas)(Map*, int); /* dissembler instruction */
};
extern Machdata *machdata; /* in machine.c */
/*
* 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;
/*
* Internal structure describing a symbol table entry
*/
typedef struct symbol Symbol;
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 */
};
};
extern int asstype; /* dissembler type - machine.c */
extern char *symerror; /* symbol table error message */
ushort beswab(ushort);
long beswal(long);
int crackhdr(int fd, Fhdr *fp);
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 findsym(long, int, Symbol *);
int getauto(Symbol *, int, int, Symbol *);
Sym* getsym(int);
int globalsym(Symbol *, int);
int isar(Biobuf*);
ushort leswab(ushort);
long leswal(long);
long line2addr(ulong, ulong, ulong);
Map* loadmap(Map *, int, Fhdr *);
int localsym(Symbol *, int);
int lookup(char *, char *, Symbol *);
void machbytype(int);
int machbyname(char *);
int mget(Map *, int, ulong, char*, int);
int mput(Map *, int, ulong, char*, int);
int nextar(Biobuf*, int, char*);
Map* newmap(Map *, int);
Sym* objbase(long*);
void objreset(void);
Sym* objsym(int);
int objtype(Biobuf*);
long pc2sp(ulong);
long pc2line(ulong);
long _round(long, long);
int readar(Biobuf*, int, int);
int readobj(Biobuf*, int);
int setmap(Map *, int, ulong, ulong, ulong);
Sym* symbase(long *);
int syminit(int, Fhdr *);
int textsym(Symbol*, int);
void unusemap(Map *, int);
