ref: db0eab9ca04b896e5760081efd854c57f65f36c3
dir: /include/interp.h/
typedef uchar BYTE; /* 8 bits */
typedef int WORD; /* 32 bits */
typedef unsigned int UWORD; /* 32 bits */
typedef vlong LONG; /* 64 bits */
typedef uvlong ULONG; /* 64 bits */
typedef double REAL; /* 64 double IEEE754 */
typedef short SHORT; /* 16 bits */
typedef float SREAL; /* 32 float IEEE754 */
enum ProgState
{
Palt, /* blocked in alt instruction */
Psend, /* waiting to send */
Precv, /* waiting to recv */
Pdebug, /* debugged */
Pready, /* ready to be scheduled */
Prelease, /* interpreter released */
Pexiting, /* exit because of kill or error */
Pbroken, /* thread crashed */
};
enum
{
propagator = 3, /* gc marking color */
PRNSIZE = 1024,
BIHASH = 23,
PQUANTA = 2048, /* prog time slice */
/* STRUCTALIGN is the unit to which the compiler aligns structs. */
/* It really should be defined somewhere else */
STRUCTALIGN = sizeof(int) /* must be >=2 because of Strings */
};
enum
{
/* Prog and Progs flags */
Ppropagate = 1<<0, /* propagate exceptions within group */
Pnotifyleader = 1<<1, /* send exceptions to group leader */
Prestrict = 1<<2, /* enforce memory limits */
Prestricted = 1<<3,
Pkilled = 1<<4,
Pprivatemem = 1<<5 /* keep heap and stack private */
};
typedef struct Alt Alt;
typedef struct Channel Channel;
typedef struct Progq Progq;
typedef struct Import Import;
typedef struct ILock ILock;
typedef struct Inst Inst;
typedef struct Module Module;
typedef struct Modlink Modlink;
typedef struct Modl Modl;
typedef struct Type Type;
typedef struct Prog Prog;
typedef struct Progs Progs;
typedef struct Heap Heap;
typedef struct Link Link;
typedef struct List List;
typedef struct Array Array;
typedef struct String String;
typedef union Linkpc Linkpc;
typedef struct REG REG;
typedef struct Frame Frame;
typedef union Stkext Stkext;
typedef struct Atidle Atidle;
typedef struct Altc Altc;
typedef struct Except Except;
typedef struct Handler Handler;
struct ILock
{
int lk;
int pid;
void* ql;
};
struct Frame
{
Inst* lr; /* REGLINK isa.h */
uchar* fp; /* REGFP */
Modlink* mr; /* REGMOD */
Type* t; /* REGTYPE */
};
union Stkext
{
uchar stack[1];
struct {
Type* TR;
uchar* SP;
uchar* TS;
uchar* EX;
union {
uchar fu[1];
Frame fr[1];
} tos;
} reg;
};
struct Array
{
WORD len;
Type* t;
Array* root;
uchar* data;
};
struct List
{
List* tail;
Type* t;
WORD data[1];
};
struct Channel
{
Array* buf; /* For buffered channels - must be first */
Progq* send; /* Queue of progs ready to send */
Progq* recv; /* Queue of progs ready to receive */
void* aux; /* Rock for devsrv */
void (*mover)(void); /* Data mover */
union {
WORD w;
Type* t;
} mid;
int front; /* Front of buffered queue */
int size; /* Number of data items in buffered queue */
};
struct Progq
{
Prog* prog;
Progq* next;
};
struct String
{
int len; /* string length */
int max; /* maximum length in representation */
char* tmp;
union {
#define Sascii data.ascii
#define Srune data.runes
char ascii[STRUCTALIGN]; /* string.c relies on having extra space (eg, in string2c) */
Rune runes[1];
}data;
};
union Linkpc
{
void (*runt)(void*);
Inst* pc;
};
struct Link
{
int sig;
Type* frame;
Linkpc u;
char *name;
};
typedef union Adr Adr;
union Adr
{
WORD imm;
WORD ind;
Inst* ins;
struct {
ushort f; /* First indirection */
ushort s; /* Second indirection */
} i;
};
struct Inst
{
uchar op;
uchar add;
ushort reg;
Adr s;
Adr d;
};
struct Altc
{
Channel* c;
void* ptr;
};
struct Alt
{
int nsend;
int nrecv;
Altc ac[1];
};
struct Type
{
int ref;
void (*free)(Heap*, int);
void (*mark)(Type*, void*);
int size;
int np;
void* destroy;
void* initialize;
uchar map[STRUCTALIGN];
};
struct REG
{
Inst* PC; /* Program counter */
uchar* MP; /* Module data */
uchar* FP; /* Frame pointer */
uchar* SP; /* Stack pointer */
uchar* TS; /* Top of allocated stack */
uchar* EX; /* Extent register */
Modlink* M; /* Module */
int IC; /* Instruction count for this quanta */
Inst* xpc; /* Saved program counter */
void* s; /* Source */
void* d; /* Destination */
void* m; /* Middle */
WORD t; /* Middle temporary */
WORD st; /* Source temporary */
WORD dt; /* Destination temporary */
};
struct Progs
{
int id;
int flags;
Progs* parent;
Progs* child;
Progs* sib;
Prog* head; /* live group leader is at head */
Prog* tail;
};
struct Prog
{
REG R; /* Register set */
Prog* link; /* Run queue */
Channel* chan; /* Channel pointer */
void* ptr; /* Channel data pointer */
enum ProgState state; /* Scheduler state */
char* kill; /* Set if prog should error */
char* killstr; /* kill string buffer when needed */
int pid; /* unique Prog id */
int quanta; /* time slice */
ulong ticks; /* time used */
int flags; /* error recovery flags */
Prog* prev;
Prog* next;
Prog* pidlink; /* next in pid hash chain */
Progs* group; /* process group */
Prog* grpprev; /* previous group member */
Prog* grpnext; /* next group member */
void* exval; /* current exception */
char* exstr; /* last exception */
void (*addrun)(Prog*);
void (*xec)(Prog*);
void* osenv;
};
struct Module
{
int ref; /* Use count */
int compiled; /* Compiled into native assembler */
ulong ss; /* Stack size */
ulong rt; /* Runtime flags */
ulong mtime; /* Modtime of dis file */
Qid qid; /* Qid of dis file */
ushort dtype; /* type of dis file's server*/
uint dev; /* subtype of dis file's server */
int nprog; /* number of instructions */
Inst* prog; /* text segment */
uchar* origmp; /* unpolluted Module data */
int ntype; /* Number of type descriptors */
Type** type; /* Type descriptors */
Inst* entry; /* Entry PC */
Type* entryt; /* Entry frame */
char* name; /* Implements type */
char* path; /* File module loaded from */
Module* link; /* Links */
Link* ext; /* External dynamic links */
Import** ldt; /* Internal linkage descriptor tables */
Handler* htab; /* Exception handler table */
ulong* pctab; /* dis pc to code pc when compiled */
void* dlm; /* dynamic C module */
};
struct Modl
{
Linkpc u; /* PC of Dynamic link */
Type* frame; /* Frame type for this entry */
};
struct Modlink
{
uchar* MP; /* Module data for this instance */
Module* m; /* The real module */
int compiled; /* Compiled into native assembler */
Inst* prog; /* text segment */
Type** type; /* Type descriptors */
uchar* data; /* for dynamic C modules */
int nlinks; /* ?apparently required by Java */
Modl links[1];
};
/* must be a multiple of 8 bytes */
struct Heap
{
int color; /* Allocation color */
ulong ref;
Type* t;
ulong hprof; /* heap profiling */
};
struct Atidle
{
int (*fn)(void*);
void* arg;
Atidle* link;
};
struct Import
{
int sig;
char* name;
};
struct Except
{
char* s;
ulong pc;
};
struct Handler
{
ulong pc1;
ulong pc2;
ulong eoff;
ulong ne;
Type* t;
Except* etab;
};
#define H2D(t, x) ((t)(((uchar*)(x))+sizeof(Heap)))
#define D2H(x) ((Heap*)(((uchar*)(x))-sizeof(Heap)))
#define H ((void*)(-1))
#define SEXTYPE(f) ((Stkext*)((uchar*)(f)-OA(Stkext, reg.tos.fu)))
#define Setmark(h) if((h)->color!=mutator) { (h)->color = propagator; nprop=1; }
#define gclock() gchalt++
#define gcunlock() gchalt--
#define gcruns() (gchalt == 0)
extern int bflag;
extern int cflag;
extern int nproc;
extern Type Tarray;
extern Type Tstring;
extern Type Tchannel;
extern Type Tlist;
extern Type Tmodlink;
extern Type* TImage;
extern Type Tptr;
extern Type Tbyte;
extern Type Tword;
extern Type Tlong;
extern Type Treal;
extern REG R;
extern String snil;
extern void (*optab[256])(void);
extern void (*comvec)(void);
extern void (*dec[])(void);
extern Module* modules;
extern int mutator;
extern int nprop;
extern int gchalt;
extern int gccolor;
extern int minvalid;
extern int Dconv(Fmt*);
extern void acquire(void);
extern void addrun(Prog*);
extern void altdone(Alt*, Prog*, Channel*, int);
extern void altgone(Prog*);
extern Array* allocimgarray(Heap*, Heap*);
extern Module* builtinmod(char*, void*, int);
extern void cblock(Prog*);
extern void* checktype(void*, Type*, char*, int);
extern void cmovw(void*, void*);
extern Channel* cnewc(Type*, void (*)(void), int);
extern int compile(Module*, int, Modlink*);
extern void cqadd(Progq**, Prog*);
extern void cqdel(Progq**);
extern void cqdelp(Progq**, Prog*);
extern void crecv(Channel*, void*);
extern void csend(Channel*, void*);
extern int csendalt(Channel*, void*, Type *, int);
extern Prog* currun(void);
extern void dbgexit(Prog*, int, char*);
extern void dbgxec(Prog*);
extern void delprog(Prog*, char*);
extern Prog* delrun(int);
extern void delrunq(Prog*);
extern Prog* delruntail(int);
extern void destroy(void*);
extern void destroyimage(ulong);
extern void destroylinks(Module*);
extern void destroystack(REG*);
extern void drawmodinit(void);
extern Type* dtype(void (*)(Heap*, int), int, uchar*, int);
extern Module* dupmod(Module*);
extern int dynldable(int);
extern void iqlock(ILock*);
extern void iqunlock(ILock*);
extern void loadermodinit(void);
extern void error(char*);
extern void errorf(char*, ...);
extern void extend(void);
extern void freedyncode(Module*);
extern void freedyndata(Modlink*);
extern void freemod(Module*);
extern void freeheap(Heap*, int);
extern void freeptrs(void*, Type*);
extern void freestring(Heap*, int);
extern void freetype(Type*);
extern void freetypemodinit(void);
extern long getdbreg();
extern int gfltconv(Fmt*);
extern void go(Module*);
extern int handler(char*);
extern Heap* heap(Type*);
extern Heap* heaparray(Type*, int);
extern void (*heapmonitor)(int, void*, ulong);
extern int heapref(void*);
extern Heap* heapz(Type*);
extern int hmsize(void*);
extern void incmem(void*, Type*);
extern void initarray(Type*, Array*);
extern void initmem(Type*, void*);
extern void irestore(Prog*);
extern Prog* isave(void);
extern void keyringmodinit(void);
extern void killcomm(Progq **p);
extern int killprog(Prog*, char*);
extern int killgrp(Prog*, char*);
extern Modlink* linkmod(Module*, Import*, int);
extern Modlink* mklinkmod(Module*, int);
extern Module* load(char*);
extern Module* lookmod(char*);
extern long magic(void);
extern void markarray(Type*, void*);
extern void markchan(Type*, void*);
extern void markheap(Type*, void*);
extern void marklist(Type*, void*);
extern void markmodl(Type*, void*);
extern void mathmodinit(void);
extern Array* mem2array(void*, int);
extern void mlink(Module*, Link*, uchar*, int, int, Type*);
extern void modinit(void);
extern WORD modstatus(REG*, char*, int);
extern void movp(void);
extern void movtmp(void);
extern void movtmpsafe(void);
extern int mustbesigned(char*, uchar*, ulong, Dir*);
extern Module* newmod(char*);
extern Module* newdyncode(int, char*, Dir*);
extern void newdyndata(Modlink*);
extern void newgrp(Prog*);
extern void newmp(void*, void*, Type*);
extern Prog* newprog(Prog*, Modlink*);
extern void newstack(Prog*);
extern Heap* nheap(int);
extern void noptrs(Type*, void*);
extern int nprog(void);
extern void opinit(void);
extern Module* parsemod(char*, uchar*, ulong, Dir*);
extern Module* parsedmod(char*, int, ulong, Qid);
extern void prefabmodinit(void);
extern Prog* progn(int);
extern Prog* progpid(int);
extern void ptradd(Heap*);
extern void ptrdel(Heap*);
extern void pushrun(Prog*);
extern Module* readmod(char*, Module*, int);
extern void irecv(void);
extern void release(void);
extern void releasex(void);
extern void retnstr(char*, int, String**);
extern void retstr(char*, String**);
extern void rungc(Prog*);
extern void runtime(Module*, Link*, char*, int, void(*)(void*), Type*);
extern void safemem(void*, Type*, void (*)(void*));
extern int segflush(void *, ulong);
extern void isend(void);
extern void setdbreg(uchar*);
extern uchar* setdbloc(uchar*);
extern void seterror(char*, ...);
extern void sethints(String*, int);
extern String* splitc(String**, int);
extern uchar* stack(Frame*);
extern int stringblen(String*);
extern int stringcmp(String*, String*);
extern String* stringdup(String*);
extern String* stringheap(int, int, int, int);
extern char* syserr(char*, char*, Prog*);
extern void sysinit(void);
extern void sysmodinit(void);
extern void tellsomeone(Prog*, char*);
extern void tkmodinit(void);
extern void unextend(Frame*);
extern void unframe(void);
extern void unload(Module*);
extern int verifysigner(uchar*, int, uchar*, ulong);
extern void xec(Prog*);
extern void xecalt(int);
extern int xprint(Prog*, void*, void*, String*, char*, int);
extern int bigxprint(Prog*, void*, void*, String*, char**, int);
extern void iyield(void);
extern String* newrunes(int);
extern String* newstring(int);
extern int runeslen(Rune*, int);
extern String* c2string(char*, int);
extern char* string2c(String*);
extern List* cons(ulong, List**);
extern String* slicer(ulong, ulong, String*);
extern String* addstring(String*, String*, int);
extern int brpatch(Inst*, Module*);
extern void readimagemodinit(void);
#define O(t,e) ((long)(&((t*)0)->e))
#define OA(t,e) ((long)(((t*)0)->e))
#pragma varargck type "D" Inst*
#pragma varargck argpos errorf 1