/************************************************************************* * * * YAP Prolog @(#)amidefs.h 1.3 3/15/90 * * * * Yap Prolog was developed at NCCUP - Universidade do Porto * * * * Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 * * * ************************************************************************** * * * File: amidefs.h * * comments: Abstract machine peculiarities * * * * Last rev: $Date: 2008-07-22 23:34:49 $ * * $Log: not supported by cvs2svn $ * Revision 1.33 2007/11/26 23:43:09 vsc * fixes to support threads and assert correctly, even if inefficiently. * * Revision 1.32 2006/10/10 14:08:17 vsc * small fixes on threaded implementation. * * Revision 1.31 2006/09/20 20:03:51 vsc * improve indexing on floats * fix sending large lists to DB * * Revision 1.30 2005/12/17 03:25:39 vsc * major changes to support online event-based profiling * improve error discovery and restart on scanner. * * Revision 1.29 2005/07/06 15:10:15 vsc * improvements to compiler: merged instructions and fixes for -> * * Revision 1.28 2005/05/30 06:07:35 vsc * changes to support more tagging schemes from tabulation. * * Revision 1.27 2005/04/10 04:01:13 vsc * bug fixes, I hope! * * Revision 1.26 2004/09/30 21:37:41 vsc * fixes for thread support * * Revision 1.25 2004/09/27 20:45:04 vsc * Mega clauses * Fixes to sizeof(expand_clauses) which was being overestimated * Fixes to profiling+indexing * Fixes to reallocation of memory after restoring * Make sure all clauses, even for C, end in _Ystop * Don't reuse space for Streams * Fix Stream_F on StreaNo+1 * * Revision 1.24 2004/04/14 19:10:40 vsc * expand_clauses: keep a list of clauses to expand * fix new trail scheme for multi-assignment variables * * Revision 1.23 2004/03/31 01:03:10 vsc * support expand group of clauses * * Revision 1.22 2004/03/10 14:59:55 vsc * optimise -> for type tests * * * * *************************************************************************/ #if ALIGN_LONGS /* */ typedef Int DISPREG; /* */ typedef CELL SMALLUNSGN; /* */ typedef Int OPREG; /* */ typedef CELL UOPREG; #else /* */ typedef Short DISPREG; /* */ typedef BITS16 SMALLUNSGN; /* */ typedef SBITS16 OPREG; /* */ typedef SBITS16 UOPREG; #endif typedef Int (*CPredicate)(void); typedef Int (*CmpPredicate)(Term, Term); #define OpRegSize sizeof(OPREG) /* Possible arguments to YAP emulator: wamreg describes an A or X register; yslot describes an Y slot COUNT is a small number (eg, number of arguments to a choicepoint, number of permanent variables in a environment */ typedef OPREG wamreg; typedef OPREG yslot; typedef OPREG COUNT; /* This is a table with the codes for YAP instructions */ typedef enum { #define OPCODE(OP,TYPE) _##OP #include "YapOpcodes.h" #undef OPCODE } op_numbers; #define _std_top _or_last /* use similar trick for keeping instruction names */ #if defined(ANALYST) || defined(DEBUG) extern char *Yap_op_names[_std_top + 1]; #endif typedef enum { _atom, _atomic, _integer, _compound, _float, _nonvar, _number, _var, _cut_by, _db_ref, _primitive, _dif, _eq, _equal, _plus, _minus, _times, _div, _and, _or, _sll, _slr, _arg, _functor } basic_preds; #if USE_THREADED_CODE #if ALIGN_LONGS /* */ typedef CELL OPCODE; #else #if LOW_ABSMI /* */ typedef BITS16 OPCODE; #else /* */ typedef CELL OPCODE; #endif #endif /* ALIGN_LONGS */ #else /* if does not USE_THREADED_CODE */ /* */ typedef op_numbers OPCODE; #endif #define OpCodeSize sizeof(OPCODE) /* Types of possible YAAM instructions. The meaning of the symbols in a abstract machine instruction is: b: arity (Int) b: bitmap (CELL *) c: constant, is a Term d: double (functor + unaligned double) f: functor F: Function, CPredicate i: large integer (functor + long) I: index (struct logic_upd_index *) l: label, yamop * L: logic upd clause, logic_upd_clause * m: module, Term n: number, Integer o: opcode, OPCODE p: predicate, struct pred_entry * s: small integer, COUNT x: wam register, wamreg y: environment slot */ /* This declaration is going to be parsed by a Prolog program, so: comments are welcome, but they should take a whole line, every field declaration should also take a single line, please check the Prolog program if you come up with a compilcated C-type that does not start by unsigned or struct. */ typedef struct yami { OPCODE opc; union { struct { CELL next; } e; struct { Term c; CELL next; } c; struct { Term c1; Term c2; CELL next; } cc; struct { Term c1; Term c2; Term c3; CELL next; } ccc; struct { Term c1; Term c2; Term c3; Term c4; CELL next; } cccc; struct { Term c1; Term c2; Term c3; Term c4; Term c5; CELL next; } ccccc; struct { Term c1; Term c2; Term c3; Term c4; Term c5; Term c6; CELL next; } cccccc; struct { Term c; struct yami *l1; struct yami *l2; struct yami *l3; CELL next; } clll; struct { CELL d[1+SIZEOF_DOUBLE/SIZEOF_INT_P]; CELL next; } d; struct { struct logic_upd_clause *ClBase; CELL next; } L; struct { Functor f; Int a; CELL next; } fa; struct { CELL i[2]; CELL next; } i; struct { struct logic_upd_index *I; struct yami *l1; struct yami *l2; COUNT s; CELL next; } Ills; struct { struct yami *l; CELL next; } l; struct { #ifdef YAPOR unsigned int or_arg; #endif /* YAPOR */ #ifdef TABLING struct table_entry *te; /* pointer to table entry */ #endif /* TABLING */ Int s; struct pred_entry *p; struct yami *d; CELL next; } apl; /* The next two instructions are twin: they both correspond to the old ldd. */ /* The first one, aLl, handles try_logical and retry_logical, */ /* Ill handles trust_logical. */ /* They must have the same fields. */ struct { #ifdef YAPOR unsigned int or_arg; #endif /* YAPOR */ #ifdef TABLING /* pointer to table entry */ struct table_entry *te; #endif /* number of arguments */ COUNT s; struct logic_upd_clause *d; struct yami *n; CELL next; } aLl; struct { #ifdef YAPOR unsigned int or_arg; #endif #ifdef TABLING /* pointer to table entry */ struct table_entry *te; #endif /* TABLING */ /* number of arguments */ struct logic_upd_index *block; struct logic_upd_clause *d; struct yami *n; CELL next; } ILl; struct { #ifdef YAPOR unsigned int or_arg; #endif #ifdef TABLING /* pointer to table entry */ struct table_entry *te; #endif Int s; struct pred_entry *p; CPredicate f; COUNT extra; CELL next; } apFs; struct { struct yami *l1; struct yami *l2; struct yami *l3; CELL next; } lll; struct { struct yami *l1; struct yami *l2; struct yami *l3; struct yami *l4; CELL next; } llll; struct { wamreg x; struct yami *l1; struct yami *l2; struct yami *l3; struct yami *l4; CELL next; } xllll; struct { COUNT s; struct yami *l1; struct yami *l2; struct yami *l3; struct yami *l4; CELL next; } sllll; struct { struct pred_entry *p; struct yami *f; wamreg x1; wamreg x2; COUNT flags; CELL next; } plxxs; struct { struct pred_entry *p; struct yami *f; wamreg x; yslot y; COUNT flags; CELL next; } plxys; struct { struct pred_entry *p; struct yami *f; wamreg y1; yslot y2; COUNT flags; CELL next; } plyys; struct { OPCODE pop; struct yami *l1; struct yami *l2; struct yami *l3; struct yami *l4; CELL next; } ollll; struct { OPCODE opcw; CELL next; } o; struct { OPCODE opcw; Term c; CELL next; } oc; struct { OPCODE opcw; CELL d[1+SIZEOF_DOUBLE/SIZEOF_INT_P]; CELL next; } od; struct { OPCODE opcw; Functor f; Int a; CELL next; } ofa; struct { OPCODE opcw; CELL i[2]; CELL next; } oi; struct { OPCODE opcw; COUNT s; CELL c; CELL next; } osc; struct { OPCODE opcw; COUNT s; CELL next; } os; struct { OPCODE opcw; wamreg x; CELL next; } ox; struct { OPCODE opcw; wamreg xl; wamreg xr; CELL next; } oxx; struct { OPCODE opcw; yslot y; CELL next; } oy; struct { struct pred_entry *p; CELL next; } p; struct { struct pred_entry *p; struct pred_entry *p0; CELL next; } pp; struct { COUNT s; CELL next; } s; /* format of expand_clauses */ struct { COUNT s1; COUNT s2; COUNT s3; struct yami *sprev; struct yami *snext; struct pred_entry *p; CELL next; } sssllp; struct { COUNT s; CELL c; CELL next; } sc; struct { COUNT s; CPredicate d; struct yami *l; struct pred_entry *p; CELL next; } sdlp; /* the next 3 instructions must have same size and have fields in same order! */ /* also check env for yes and trustfail code before making any changes */ struct { #ifdef YAPOR unsigned int or_arg; #endif COUNT s; CELL *bmap; struct yami *l; struct pred_entry *p0; CELL next; } sblp; struct { #ifdef YAPOR unsigned int or_arg; #endif COUNT s; CELL *bmap; struct pred_entry *p; struct pred_entry *p0; CELL next; } sbpp; struct { #ifdef YAPOR unsigned int or_arg; #endif COUNT s; CELL *bmap; Term mod; struct pred_entry *p0; CELL next; } sbmp; struct { /* size of table */ COUNT s; /* live entries */ COUNT e; /* pending suspended blocks */ COUNT w; struct yami *l; CELL next; } sssl; struct { wamreg x; CELL next; } x; struct { wamreg x; struct pred_entry *p0; CELL next; } xp; struct { wamreg x; CELL c; CELL next; } xc; struct { wamreg x; CELL d[1+SIZEOF_DOUBLE/SIZEOF_INT_P]; CELL next; } xd; struct { wamreg x; Functor f; Int a; CELL next; } xfa; struct { wamreg x; struct yami *F; CELL next; } xl; struct { wamreg x; CELL i[2]; CELL next; } xi; struct { wamreg x; struct yami *l1; struct yami *l2; CELL next; } xll; struct { wamreg xl; wamreg xr; CELL next; } xx; struct { wamreg x; wamreg x1; wamreg x2; CELL next; } xxx; struct { wamreg xl1; wamreg xl2; wamreg xr1; wamreg xr2; CELL next; } xxxx; struct { wamreg x; wamreg xi; Int c; CELL next; } xxn; struct { wamreg x; yslot y; CELL next; } xy; struct { wamreg x; wamreg x1; yslot y2; CELL next; } xxy; struct { yslot y; CELL next; } y; struct { yslot y; struct pred_entry *p0; CELL next; } yp; struct { yslot y; struct yami *F; CELL next; } yl; struct { yslot y; wamreg x; CELL next; } yx; struct { yslot y; wamreg x1; wamreg x2; CELL next; } yxx; struct { yslot y1; yslot y2; wamreg x; CELL next; } yyx; struct { yslot y; yslot y1; yslot y2; CELL next; } yyy; struct { wamreg xi; yslot y; Int c; CELL next; } yxc; } u; } yamop; typedef yamop yamopp; #define OPCR opc #define OPCW u.ox.opcw #define NEXTOP(V,TYPE) ((yamop *)(&((V)->u.TYPE.next))) #define PREVOP(V,TYPE) ((yamop *)((CODEADDR)(V)-(CELL)NEXTOP((yamop *)NULL,TYPE))) #if defined(TABLING) || defined(SBA) typedef struct trail_frame { Term term; CELL value; } *tr_fr_ptr; #define TrailTerm(X) ((X)->term) #define TrailVal(X) ((X)->value) #else typedef Term *tr_fr_ptr; #define TrailTerm(X) (*(X)) #define TrailVal(X) OOOOOOPS: this program should not compile #endif /* TABLING || SBA */ /* Choice Point Structure 6 fixed fields (TR,AP,H,B,ENV,CP) plus arguments */ typedef struct choicept { tr_fr_ptr cp_tr; CELL *cp_h; struct choicept *cp_b; #ifdef DEPTH_LIMIT CELL cp_depth; #endif /* DEPTH_LIMIT */ yamop *cp_cp; #ifdef YAPOR int cp_lub; /* local untried branches */ struct or_frame *cp_or_fr; /* or-frame pointer */ #endif /* YAPOR */ yamop *cp_ap; #if MIN_ARRAY == 0 CELL *cp_env; /* GNUCC understands empty arrays */ CELL cp_args[MIN_ARRAY]; #define cp_a1 cp_args[0] #define cp_a2 cp_args[1] #define cp_a3 cp_args[2] #define cp_a4 cp_args[3] #define cp_a5 cp_args[4] #define cp_a6 cp_args[5] #define cp_a7 cp_args[6] #define cp_a8 cp_args[7] #define EXTRA_CBACK_ARG(Arity,Offset) B->cp_args[(Arity)+(Offset)-1] #else /* Otherwise, we need a very dirty trick to access the arguments */ union { CELL *cp_uenv; CELL cp_args[1]; } cp_last; #define cp_env cp_last.cp_uenv #define cp_a1 cp_last.cp_args[1] #define cp_a2 cp_last.cp_args[2] #define cp_a3 cp_last.cp_args[3] #define cp_a4 cp_last.cp_args[4] #define cp_a5 cp_last.cp_args[5] #define cp_a6 cp_last.cp_args[6] #define cp_a7 cp_last.cp_args[7] #define cp_a8 cp_last.cp_args[8] #define EXTRA_CBACK_ARG(Arity,Offset) B->cp_last.cp_args[(Arity)+(Offset)] #endif } *choiceptr; /* This has problems with \+ \+ a, !, b. */ #define SHOULD_CUT_UP_TO(X,Y) ((X) != (Y)) /* #define SHOULD_CUT_UP_TO(X,Y) ((X) (Y)) */ #ifdef SBA #define SHARED_CP(CP) ((CP) >= B_FZ || (CP) < (choiceptr)H_FZ) #define YOUNGER_CP(CP1, CP2) \ (SHARED_CP(CP1) ? \ (SHARED_CP(CP2) ? OrFr_depth((CP1)->cp_or_fr) > OrFr_depth((CP2)->cp_or_fr) : FALSE) \ : \ (SHARED_CP(CP2) ? TRUE : CP1 < CP2) \ ) #define EQUAL_OR_YOUNGER_CP(CP1, CP2) \ (SHARED_CP(CP1) ? \ (SHARED_CP(CP2) ? OrFr_depth((CP1)->cp_or_fr) >= OrFr_depth((CP2)->cp_or_fr) : FALSE) \ : \ (SHARED_CP(CP2) ? TRUE : CP1 <= CP2) \ ) #define YOUNGER_H(H1, H2) FIXMEE!!!! #else /* ENV_COPY || ACOW */ #define YOUNGER_CP(CP1, CP2) ((CP1) < (CP2)) #define EQUAL_OR_YOUNGER_CP(CP1, CP2) ((CP1) <= (CP2)) #define YOUNGER_H(H1, H2) ((CELL *)(H1) > (CELL *)(H2)) #endif /* SBA */ #define YOUNGEST_CP(CP1, CP2) (YOUNGER_CP(CP1,CP2) ? (CP1) : (CP2)) #define YOUNGEST_H(H1, H2) (YOUNGER_H(H1,H2) ? (CELL *)(H1) : (CELL *)(H2)) /* Environment Structure (CP, E, and CUT_B). Yap always saves the B where to cut to, even if not needed. */ #define E_CP -1 #define E_E -2 #define E_CB -3 #ifdef TABLING #define E_B -4 #ifdef DEPTH_LIMIT #define E_DEPTH -5 #define EnvSizeInCells 5 #else #define EnvSizeInCells 4 #endif /* DEPTH_LIMIT */ #else /* TABLING */ #ifdef DEPTH_LIMIT #define E_DEPTH -4 #define EnvSizeInCells 4 #else #define EnvSizeInCells 3 #endif /* DEPTH_LIMIT */ #endif /* TABLING */ #if MSHIFTOFFS #define FixedEnvSize EnvSizeInCells #else #define FixedEnvSize (EnvSizeInCells*sizeof(CELL)) #endif #define RealEnvSize (EnvSizeInCells*sizeof(CELL)) static inline CELL *ENV_Parent(CELL *env) { return (CELL *)env[E_E]; } static inline UInt ENV_Size(yamop *cp) { return (((yamop *)((CODEADDR)(cp) - (CELL)NEXTOP((yamop *)NULL,sbpp)))->u.sbpp.s); } static inline struct pred_entry *ENV_ToP(yamop *cp) { return (((yamop *)((CODEADDR)(cp) - (CELL)NEXTOP((yamop *)NULL,sbpp)))->u.sbpp.p); } static inline OPCODE ENV_ToOp(yamop *cp) { return (((yamop *)((CODEADDR)(cp) - (CELL)NEXTOP((yamop *)NULL,sbpp)))->opc); } static inline UInt EnvSize(yamop *cp) { return ((-ENV_Size(cp))/(OPREG)sizeof(CELL)); } static inline CELL *EnvBMap(yamop *p) { return (((yamop *)((CODEADDR)(p) - (CELL)NEXTOP((yamop *)NULL,sbpp)))->u.sbpp.bmap); } static inline struct pred_entry *EnvPreg(yamop *p) { return (((yamop *)((CODEADDR)(p) - (CELL)NEXTOP((yamop *)NULL,sbpp)))->u.sbpp.p0); } /* access to instructions */ #if USE_THREADED_CODE extern void **Yap_ABSMI_OPCODES; #define absmadr(i) ((OPCODE)(Yap_ABSMI_OPCODES[(i)])) #else #define absmadr(i) ((OPCODE)(i)) #endif /* used to find out how many instructions of each kind are executed */ #ifdef ANALYST extern YAP_ULONG_LONG Yap_opcount[_std_top + 1]; extern YAP_ULONG_LONG Yap_2opcount[_std_top + 1][_std_top + 1]; #endif /* ANALYST */ #if DEPTH_LIMIT /* Make this into an even number so that the system will know it should ignore the depth limit */ #define RESET_DEPTH() DEPTH = MkIntTerm(MAX_ABS_INT-1) #else #endif