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yap-6.3/H/amidefs.h
Vitor Santos Costa 53b4828000 new Atts Code.
2010-03-08 09:24:11 +00:00

1055 lines
24 KiB
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/*************************************************************************
* *
* 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
* *
* *
*************************************************************************/
#ifndef NULL
#include <stdio.h>
#endif
#ifdef FROZEN_STACKS
#ifdef SBA
#define PROTECT_FROZEN_H(CPTR) \
((Unsigned((Int)((CPTR)->cp_h)-(Int)(H_FZ)) < \
Unsigned((Int)(B_FZ)-(Int)(H_FZ))) ? \
(CPTR)->cp_h : H_FZ)
#define PROTECT_FROZEN_B(CPTR) \
((Unsigned((Int)(CPTR)-(Int)(H_FZ)) < \
Unsigned((Int)(B_FZ)-(Int)(H_FZ))) ? \
(CPTR) : B_FZ)
/*
#define PROTECT_FROZEN_H(CPTR) ((CPTR)->cp_h > H_FZ && (CPTR)->cp_h < (CELL *)B_FZ ? (CPTR)->cp_h : H_FZ )
#define PROTECT_FROZEN_B(CPTR) ((CPTR) < B_FZ && (CPTR) > (choiceptr)H_FZ ? (CPTR) : B_FZ )
*/
#else /* TABLING */
#define PROTECT_FROZEN_B(CPTR) (YOUNGER_CP(CPTR, B_FZ) ? CPTR : B_FZ)
#define PROTECT_FROZEN_H(CPTR) (((CPTR)->cp_h > H_FZ) ? (CPTR)->cp_h : H_FZ)
#endif /* SBA */
#else
#define PROTECT_FROZEN_B(CPTR) (CPTR)
#define PROTECT_FROZEN_H(CPTR) (CPTR)->cp_h
#endif /* FROZEN_STACKS */
#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,
_p_put_fi,
_p_put_i,
_p_put_f,
_p_a_eq_float,
_p_a_eq_int,
_p_a_eq,
_p_ltc_float,
_p_ltc_int,
_p_lt,
_p_gtc_float,
_p_gtc_int,
_p_get_fi,
_p_get_i,
_p_get_f,
_p_add_float_c,
_p_add_int_c,
_p_add,
_p_sub_float_c,
_p_sub_int_c,
_p_sub,
_p_mul_float_c,
_p_mul_int_c,
_p_mul,
_p_fdiv_c1,
_p_fdiv_c2,
_p_fdiv,
_p_idiv_c1,
_p_idiv_c2,
_p_idiv,
_p_mod_c1,
_p_mod_c2,
_p_mod,
_p_rem_c1,
_p_rem_c2,
_p_rem,
_p_land_c,
_p_land,
_p_lor_c,
_p_lor,
_p_xor_c,
_p_xor,
_p_uminus,
_p_sr_c1,
_p_sr_c2,
_p_sr,
_p_sl_c1,
_p_sl_c2,
_p_sl,
_p_label_ctl
} 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 and type 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: logic upd index (struct logic_upd_index *)
l: label, yamop *
L: logic upd clause, logic_upd_clause *
m: module, Term
n: number, Integer
o: opcode, OPCODE
O: OR-parallel information, used by YAPOR, unsigned int
p: predicate, struct pred_entry *
s: small integer, COUNT
t: pointer to table entry, used by yaptab, struct table_entry *
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 complicated 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;
} Otapl;
struct {
/* call counter */
COUNT n;
/* native code pointer */
CPredicate native;
/* next instruction to execute after native code if the predicate was not fully compiled */
struct yami *native_next;
/* Pointer to pred */
struct pred_entry *p;
CELL next;
} aFlp;
/* 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;
} OtaLl;
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;
} OtILl;
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;
} OtapFs;
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 {
struct yami *l;
struct pred_entry *p;
CELL next;
} lp;
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;
CELL d[1+SIZEOF_DOUBLE/SIZEOF_INT_P];
struct yami *F;
struct yami *T;
CELL next;
} sdll;
struct {
COUNT s;
struct yami *l;
struct pred_entry *p;
CELL next;
} slp;
struct {
COUNT s;
Int I;
struct yami *F;
struct yami *T;
CELL next;
} snll;
struct {
COUNT s0;
COUNT s1;
CELL d[1+SIZEOF_DOUBLE/SIZEOF_INT_P];
CELL next;
} ssd;
struct {
COUNT s0;
COUNT s1;
Int n;
CELL next;
} ssn;
struct {
COUNT s0;
COUNT s1;
COUNT s2;
CELL next;
} sss;
struct {
COUNT s1;
COUNT s2;
struct yami *F;
struct yami *T;
CELL next;
} ssll;
struct {
COUNT s;
wamreg x;
struct yami *l;
CELL next;
} sxl;
struct {
COUNT s;
wamreg x;
struct yami *F;
struct yami *T;
CELL next;
} sxll;
struct {
COUNT s;
yslot y;
struct yami *l;
CELL next;
} syl;
struct {
COUNT s;
yslot y;
struct yami *F;
struct yami *T;
CELL next;
} syll;
/* 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 */
/* last, Osblp is known to the buildops script */
struct {
#ifdef YAPOR
unsigned int or_arg;
#endif
COUNT s;
CELL *bmap;
struct yami *l;
struct pred_entry *p0;
CELL next;
} Osblp;
struct {
#ifdef YAPOR
unsigned int or_arg;
#endif
COUNT s;
CELL *bmap;
struct pred_entry *p;
struct pred_entry *p0;
CELL next;
} Osbpp;
struct {
#ifdef YAPOR
unsigned int or_arg;
#endif
COUNT s;
CELL *bmap;
Term mod;
struct pred_entry *p0;
CELL next;
} Osbmp;
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 xi;
Term c;
CELL next;
} xxc;
struct {
wamreg x;
wamreg xi;
Int c;
CELL next;
} xxn;
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 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 y1;
yslot y2;
wamreg x1;
wamreg x2;
CELL next;
} yyxx;
struct {
yslot y;
yslot y1;
yslot y2;
CELL next;
} yyy;
struct {
yslot y;
wamreg xi;
Int c;
CELL next;
} yxn;
} 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
*/
#ifdef DETERMINISTIC_TABLING
struct deterministic_choicept {
yamop *cp_ap;
struct choicept *cp_b;
tr_fr_ptr cp_tr;
#ifdef DEPTH_LIMIT
CELL cp_depth;
#endif /* DEPTH_LIMIT */
#ifdef YAPOR
int cp_lub; /* local untried branches */
struct or_frame *cp_or_fr; /* or-frame pointer */
#endif /* YAPOR */
CELL *cp_h; /* necessary, otherwise we get in trouble */
};
typedef struct choicept {
yamop *cp_ap;
struct choicept *cp_b;
tr_fr_ptr cp_tr;
#ifdef DEPTH_LIMIT
CELL cp_depth;
#endif /* DEPTH_LIMIT */
#ifdef YAPOR
int cp_lub; /* local untried branches */
struct or_frame *cp_or_fr; /* or-frame pointer */
#endif /* YAPOR */
CELL *cp_h;
yamop *cp_cp;
#else
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;
#endif /* DETERMINISTIC_TABLING */
#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,Osbpp)))->u.Osbpp.s);
}
static inline
struct pred_entry *ENV_ToP(yamop *cp)
{
return (((yamop *)((CODEADDR)(cp) - (CELL)NEXTOP((yamop *)NULL,Osbpp)))->u.Osbpp.p);
}
static inline
OPCODE ENV_ToOp(yamop *cp)
{
return (((yamop *)((CODEADDR)(cp) - (CELL)NEXTOP((yamop *)NULL,Osbpp)))->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,Osbpp)))->u.Osbpp.bmap);
}
static inline
struct pred_entry *EnvPreg(yamop *p)
{
return (((yamop *)((CODEADDR)(p) - (CELL)NEXTOP((yamop *)NULL,Osbpp)))->u.Osbpp.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
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