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yap-6.3/C/amasm.c

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/*************************************************************************
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: amasm.c *
* comments: abstract machine assembler *
* *
* Last rev: $Date: 2008-08-12 01:27:22 $
**
* $Log: not supported by cvs2svn $
* Revision 1.103 2008/08/07 20:51:16 vsc
* more threadin fixes
*
* Revision 1.102 2008/07/11 17:02:07 vsc
* fixes by Bart and Tom: mostly libraries but nasty one in indexing
* compilation.
*
* Revision 1.101 2008/04/01 22:28:41 vsc
* put YAPOR back to life.
*
* Revision 1.100 2008/03/25 16:45:52 vsc
* make or-parallelism compile again
*
* Revision 1.99 2008/01/23 17:57:44 vsc
* valgrind it!
* enable atom garbage collection.
*
* Revision 1.98 2007/11/26 23:43:07 vsc
* fixes to support threads and assert correctly, even if inefficiently.
*
* Revision 1.97 2007/11/07 09:25:27 vsc
* speedup meta-calls
*
* Revision 1.96 2007/11/06 17:02:09 vsc
* compile ground terms away.
*
* Revision 1.95 2007/06/23 17:31:50 vsc
* pin cluses with floats.
*
* Revision 1.94 2006/12/27 01:32:37 vsc
* diverse fixes
*
* Revision 1.93 2006/12/13 16:10:14 vsc
* several debugger and CLP(BN) improvements.
*
* Revision 1.92 2006/11/15 00:13:36 vsc
* fixes for indexing code.
*
* Revision 1.91 2006/11/06 18:35:03 vsc
* 1estranha
*
* Revision 1.90 2006/10/11 14:53:57 vsc
* fix memory leak
* fix overflow handling
* VS: ----------------------------------------------------------------------
*
* Revision 1.89 2006/10/10 14:08:16 vsc
* small fixes on threaded implementation.
*
* Revision 1.88 2006/09/20 20:03:51 vsc
* improve indexing on floats
* fix sending large lists to DB
*
* Revision 1.87 2006/03/24 17:13:41 rslopes
* New update to BEAM engine.
* BEAM now uses YAP Indexing (JITI)
*
* Revision 1.86 2006/01/02 02:16:17 vsc
* support new interface between YAP and GMP, so that we don't rely on our own
* allocation routines.
* Several big fixes.
*
* Revision 1.85 2005/12/17 03:25:39 vsc
* major changes to support online event-based profiling
* improve error discovery and restart on scanner.
*
* Revision 1.84 2005/09/08 22:06:44 rslopes
* BEAM for YAP update...
*
* Revision 1.83 2005/08/02 03:09:49 vsc
* fix debugger to do well nonsource predicates.
*
* Revision 1.82 2005/07/06 15:10:02 vsc
* improvements to compiler: merged instructions and fixes for ->
*
* Revision 1.81 2005/06/01 21:23:44 vsc
* inline compare
*
* Revision 1.80 2005/06/01 20:25:23 vsc
* == and \= should not need a choice-point in ->
*
* Revision 1.79 2005/06/01 16:42:30 vsc
* put switch_list_nl back
*
* Revision 1.78 2005/06/01 14:02:47 vsc
* get_rid of try_me?, retry_me? and trust_me? instructions: they are not
* significantly used nowadays.
*
* Revision 1.77 2005/05/31 19:42:27 vsc
* insert some more slack for indices in LU
* Use doubly linked list for LU indices so that updating is less cumbersome.
*
* Revision 1.76 2005/05/30 05:33:43 vsc
* get rid of annoying debugging message.
*
* Revision 1.75 2005/05/30 05:26:49 vsc
* fix tabling
* allow atom gc again for now.
*
* Revision 1.74 2005/05/25 21:43:32 vsc
* fix compiler bug in 1 << X, found by Nuno Fonseca.
* compiler internal errors get their own message.
*
* Revision 1.73 2005/04/10 04:01:09 vsc
* bug fixes, I hope!
*
* Revision 1.72 2005/03/04 20:30:10 ricroc
* bug fixes for YapTab support
*
* Revision 1.71 2005/01/28 23:14:34 vsc
* move to Yap-4.5.7
* Fix clause size
*
* Revision 1.70 2004/12/28 22:20:35 vsc
* some extra bug fixes for trail overflows: some cannot be recovered that
*easily,
* some can.
*
* Revision 1.69 2004/12/20 21:44:56 vsc
* more fixes to CLPBN
* fix some Yap overflows.
*
* Revision 1.68 2004/12/07 16:54:57 vsc
* fix memory overflow
*
* Revision 1.67 2004/12/05 05:01:23 vsc
* try to reduce overheads when running with goal expansion enabled.
* CLPBN fixes
* Handle overflows when allocating big clauses properly.
*
* Revision 1.66 2004/11/19 22:08:41 vsc
* replace SYSTEM_ERROR_INTERNAL by out OUT_OF_WHATEVER_ERROR whenever
*appropriate.
*
* Revision 1.65 2004/10/26 20:15:48 vsc
* More bug fixes for overflow handling
*
* Revision 1.64 2004/09/30 21:37:40 vsc
* fixes for thread support
*
* Revision 1.63 2004/09/27 20:45:02 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 1.62 2004/08/20 16:16:23 vsc
* growheap was not checking some compiler instructions
* source was getting confused in reconsult
*
* Revision 1.61 2004/04/29 03:45:50 vsc
* fix garbage collection in execute_tail
*
* Revision 1.60 2004/04/22 20:07:04 vsc
* more fixes for USE_SYSTEM_MEMORY
*
* Revision 1.59 2004/03/31 01:03:09 vsc
* support expand group of clauses
*
* Revision 1.58 2004/03/10 14:59:55 vsc
* optimise -> for type tests
* *
* *
*************************************************************************/
#ifdef SCCS
static char SccsId[] = "@(#)amasm.c 1.3 3/15/90";
#endif
#include "Yap.h"
#include "clause.h"
#include "YapCompile.h"
#include "yapio.h"
#ifdef BEAM
#include "eam.h"
#endif
#ifdef YAPOR
#include "or.macros.h"
#endif /* YAPOR */
#if HAVE_STRING_H
#include <string.h>
#endif
/* info on compare built-ins */
#define TYPE_XX 0
#define TYPE_CX 1
#define TYPE_XC 2
typedef struct cmp_op_info_struct {
wamreg x1_arg, x2_arg;
Int c_arg;
int c_type;
struct clause_info_struct *cl_info;
} cmp_op_info;
typedef struct clause_info_struct {
int alloc_found, dealloc_found;
struct pred_entry *CurrentPred;
} clause_info;
static OPREG Var_Ref(Ventry *, int);
static wamreg emit_xreg(CELL);
static yslot emit_yreg(CELL);
static wamreg emit_x(CELL);
static yslot emit_y(Ventry *);
static yamop *emit_a(CELL);
static CELL *emit_bmlabel(CELL, struct intermediates *);
static yamop *emit_ilabel(CELL, struct intermediates *);
static Functor emit_f(CELL);
static CELL emit_c(CELL);
static COUNT emit_count(CELL);
static OPCODE emit_op(op_numbers);
static yamop *a_cle(op_numbers, yamop *, int, struct intermediates *);
static yamop *a_e(op_numbers, yamop *, int);
static yamop *a_ue(op_numbers, op_numbers, yamop *, int);
static yamop *a_v(op_numbers, op_numbers, yamop *, int, struct PSEUDO *);
static yamop *a_uv(Ventry *, op_numbers, op_numbers, op_numbers, op_numbers,
yamop *, int);
static yamop *a_vr(op_numbers, op_numbers, yamop *, int,
struct intermediates *);
static yamop *a_rv(op_numbers, op_numbers, OPREG, yamop *, int,
struct PSEUDO *);
static yamop *a_vv(op_numbers, op_numbers, yamop *, int,
struct intermediates *);
static yamop *a_glist(int *, yamop *, int, struct intermediates *);
static void a_pair(CELL *, int, struct intermediates *);
static yamop *a_f(CELL, op_numbers, yamop *, int);
static yamop *a_c(CELL, op_numbers, yamop *, int);
static yamop *a_uc(CELL, op_numbers, op_numbers, yamop *, int);
static yamop *a_n(op_numbers, int, yamop *, int);
static yamop *a_un(op_numbers, op_numbers, int, yamop *, int);
static yamop *a_nc(CELL, op_numbers, int, yamop *, int);
static yamop *a_unc(CELL, op_numbers, op_numbers, int, yamop *, int);
static yamop *a_r(CELL, op_numbers, yamop *, int);
static yamop *a_p(op_numbers, clause_info *, yamop *, int,
struct intermediates *);
static yamop *a_pl(op_numbers, PredEntry *, yamop *, int);
static yamop *a_l(CELL, op_numbers, yamop *, int, struct intermediates *);
static yamop *a_hx(op_numbers, union clause_obj *, int, yamop *, int,
struct intermediates *);
static yamop *a_if(op_numbers, union clause_obj *, int, yamop *, int,
struct intermediates *cip);
static yamop *a_cut(clause_info *, yamop *, int, struct intermediates *);
#ifdef YAPOR
static yamop *a_try(op_numbers, CELL, CELL, int, int, yamop *, int,
struct intermediates *);
static yamop *a_either(op_numbers, CELL, CELL, int, yamop *, int,
struct intermediates *);
#else
static yamop *a_try(op_numbers, CELL, CELL, yamop *, int,
struct intermediates *);
static yamop *a_either(op_numbers, CELL, CELL, yamop *, int,
struct intermediates *);
#endif /* YAPOR */
static yamop *a_gl(op_numbers, yamop *, int, struct PSEUDO *,
struct intermediates *CACHE_TYPE);
static COUNT compile_cmp_flags(unsigned char *);
static yamop *a_igl(CELL, op_numbers, yamop *, int, struct intermediates *);
static yamop *a_xigl(op_numbers, yamop *, int, struct PSEUDO *);
static yamop *a_ucons(int *, compiler_vm_op, yamop *, int,
struct intermediates *);
static yamop *a_uvar(yamop *, int, struct intermediates *);
static yamop *a_wvar(yamop *, int, struct intermediates *);
static yamop *do_pass(int, yamop **, int, int *, int *, struct intermediates *,
UInt CACHE_TYPE);
#ifdef DEBUG_OPCODES
static void DumpOpCodes(void);
#endif
#ifdef SFUNC
static void a_vsf(int, yamop *, int, struct PSEUDO *);
static void a_asf(int, yamop *, int, struct PSEUDO *);
#endif
static yamop *check_alloc(clause_info *, yamop *, int, struct intermediates *);
static yamop *a_deallocate(clause_info *, yamop *, int, struct intermediates *);
static yamop *a_bmap(yamop *, int, struct PSEUDO *);
static void a_fetch_vv(cmp_op_info *, int, struct intermediates *);
static void a_fetch_cv(cmp_op_info *, int, struct intermediates *);
static void a_fetch_vc(cmp_op_info *, int, struct intermediates *);
static yamop *a_f2(cmp_op_info *, yamop *, int, struct intermediates *);
profile_data *Yap_initProfiler(PredEntry *p) {
profile_data *ptr;
if (p->StatisticsForPred)
return p->StatisticsForPred;
if ((ptr = (profile_data *)Yap_AllocCodeSpace(sizeof(profile_data))) ==
NULL) {
return NULL;
}
INIT_LOCK(ptr->lock);
ptr->NOfEntries = 0;
ptr->NOfHeadSuccesses = 0;
ptr->NOfRetries = 0;
p->StatisticsForPred = ptr;
return ptr;
}
#define GONEXT(TYPE) code_p = ((yamop *)(&(code_p->y_u.TYPE.next)))
inline static yslot emit_y(Ventry *ve) {
#if MSHIFTOFFS
return (-FixedEnvSize - ((ve->NoOfVE) & MaskVarAdrs) - 1);
#else
return (-FixedEnvSize - (((ve->NoOfVE) & MaskVarAdrs) * CELLSIZE) - CELLSIZE);
#endif
}
inline static OPREG Var_Ref(Ventry *ve, int is_y_var) {
if (is_y_var) {
#if MSHIFTOFFS
return -FixedEnvSize - ((ve->NoOfVE) & MaskVarAdrs) - 1;
#else
return -FixedEnvSize - (((ve->NoOfVE) & MaskVarAdrs) * CELLSIZE) - CELLSIZE;
#endif
} else {
#if PRECOMPUTE_REGADDRESS
return (CELL)(XREGS + ((ve->NoOfVE) & MaskVarAdrs));
#else
#if MSHIFTOFFS
return ((ve->NoOfVE) & MaskVarAdrs);
#else
return CELLSIZE * ((ve->NoOfVE) & MaskVarAdrs);
#endif
#endif /* PRECOMPUTE_REGADDRESS */
}
}
#define is_void_var() (((Ventry *)(cip->cpc->rnd1))->KindOfVE == VoidVar)
#define is_a_void(X) (((Ventry *)(X))->KindOfVE == VoidVar)
#define is_temp_var() (((Ventry *)(cip->cpc->rnd1))->KindOfVE == TempVar)
#define is_atemp_var(p) (((Ventry *)(p->rnd1))->KindOfVE == TempVar)
#define no_ref_var() (((Ventry *)(cip->cpc->rnd1))->NoOfVE == 1)
#define no_ref(X) (((Ventry *)(X))->NoOfVE == 1)
inline static yamop *fill_a(CELL a, yamop *code_p, int pass_no) {
CELL *ptr = ((CELL *)(code_p));
if (pass_no)
*ptr = a;
return (yamop *)(++ptr);
}
inline static wamreg emit_xreg(CELL w) { return (wamreg)w; }
inline static yslot emit_yreg(CELL w) { return (yslot)w; }
inline static wamreg emit_x(CELL xarg) {
#if PRECOMPUTE_REGADDRESS
return (emit_xreg((CELL)(XREGS + xarg)));
#else
#if MSHIFTOFFS
return (emit_xreg(xarg));
#else
return (emit_xreg(CELLSIZE * (xarg)));
#endif
#endif /* PRECOMPUTE_REGADDRESS */
}
wamreg Yap_emit_x(CELL xarg) { return emit_x(xarg); }
inline static yamop *emit_a(CELL a) { return ((yamop *)(a)); }
inline static struct pred_entry *emit_pe(struct pred_entry *a) { return a; }
inline static yamop *emit_ilabel(register CELL addr,
struct intermediates *cip) {
if (addr & 1)
return (emit_a(Unsigned(cip->code_addr) + cip->label_offset[addr]));
else {
return (emit_a(addr));
}
}
inline static CELL *emit_bmlabel(register CELL addr,
struct intermediates *cip) {
return (CELL *)(emit_a(Unsigned(cip->code_addr) + cip->label_offset[addr]));
}
inline static Functor emit_f(CELL a) { return (Functor)(a); }
inline static CELL emit_c(CELL a) { return a; }
static inline COUNT emit_count(CELL count) { return count; }
#ifdef DEBUG_OPCODES
inline static void DumpOpCodes(void) {
int i = 0, j;
while (i < 30) {
for (j = i; j <= _std_top; j += 25)
fprintf(GLOBAL_stderr, "%5d %6lx", j, absmadr(j));
fputc('\n', GLOBAL_stderr);
++i;
}
}
#endif
static inline OPCODE emit_op(op_numbers op) { return absmadr((Int)op); }
static OPCODE opcode(op_numbers op) { return (emit_op(op)); }
OPCODE
Yap_opcode(op_numbers op) { return opcode(op); }
static void add_clref(CELL clause_code, int pass_no) {
if (pass_no) {
LogUpdClause *cl = ClauseCodeToLogUpdClause(clause_code);
cl->ClRefCount++;
}
}
static void add_to_dbtermsl(struct intermediates *cip, Term t) {
DBTerm *dbt = TermToDBTerm(t);
dbt->ag.NextDBT = cip->dbterml->dbterms;
cip->dbterml->dbterms = dbt;
}
static yamop *a_lucl(op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip, clause_info *cla) {
if (pass_no) {
LogUpdIndex *lcl = (LogUpdIndex *)cip->code_addr;
code_p->opc = emit_op(opcode);
code_p->y_u.Illss.I = lcl;
cip->cpc->rnd4 = (CELL)code_p;
cip->current_try_lab = &code_p->y_u.Illss.l1;
cip->current_trust_lab = &code_p->y_u.Illss.l2;
code_p->y_u.Illss.l1 = NULL;
code_p->y_u.Illss.l2 = NULL;
code_p->y_u.Illss.s = cip->cpc->rnd3;
code_p->y_u.Illss.e = 0;
}
GONEXT(Illss);
return code_p;
}
static yamop *a_cle(op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
LogUpdClause *cl = (LogUpdClause *)cip->code_addr;
code_p->opc = emit_op(opcode);
code_p->y_u.L.ClBase = cl;
cl->ClExt = code_p;
cl->ClFlags |= LogUpdRuleMask;
}
GONEXT(L);
return code_p;
}
inline static yamop *a_e(op_numbers opcode, yamop *code_p, int pass_no) {
if (pass_no) {
code_p->opc = emit_op(opcode);
}
GONEXT(e);
return code_p;
}
inline static yamop *a_p0(op_numbers opcode, yamop *code_p, int pass_no,
PredEntry *p0) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.p.p = p0;
}
GONEXT(p);
return code_p;
}
inline static yamop *a_lp(op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.lp.p = (PredEntry *)cip->cpc->rnd1;
code_p->y_u.lp.l = (yamop *)cip->cpc->rnd2;
}
GONEXT(lp);
return code_p;
}
inline static yamop *a_ue(op_numbers opcode, op_numbers opcodew, yamop *code_p,
int pass_no) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.o.opcw = emit_op(opcodew);
}
GONEXT(o);
return code_p;
}
inline static yamop *emit_fail(struct intermediates *cip) {
if (cip->failure_handler) {
return emit_a(Unsigned(cip->code_addr) +
cip->label_offset[cip->failure_handler]);
} else {
return FAILCODE;
}
}
inline static yamop *a_v(op_numbers opcodex, op_numbers opcodey, yamop *code_p,
int pass_no, struct PSEUDO *cpc) {
Ventry *ve = (Ventry *)cpc->rnd1;
OPREG var_offset;
int is_y_var = (ve->KindOfVE == PermVar);
var_offset = Var_Ref(ve, is_y_var);
if (is_y_var) {
if (pass_no) {
code_p->opc = emit_op(opcodey);
code_p->y_u.y.y = emit_yreg(var_offset);
}
GONEXT(y);
} else {
if (pass_no) {
code_p->opc = emit_op(opcodex);
code_p->y_u.x.x = emit_xreg(var_offset);
}
GONEXT(x);
}
return code_p;
}
inline static yamop *a_vp(op_numbers opcodex, op_numbers opcodey, yamop *code_p,
int pass_no, struct PSEUDO *cpc,
clause_info *clinfo) {
Ventry *ve = (Ventry *)cpc->rnd1;
OPREG var_offset;
int is_y_var = (ve->KindOfVE == PermVar);
var_offset = Var_Ref(ve, is_y_var);
if (is_y_var) {
if (pass_no) {
code_p->opc = emit_op(opcodey);
code_p->y_u.yps.y = emit_yreg(var_offset);
code_p->y_u.yps.p0 = clinfo->CurrentPred;
code_p->y_u.yps.s = -Signed(RealEnvSize) - CELLSIZE * cpc->rnd2;
}
GONEXT(yps);
} else {
if (pass_no) {
code_p->opc = emit_op(opcodex);
code_p->y_u.xps.x = emit_xreg(var_offset);
code_p->y_u.xps.p0 = clinfo->CurrentPred;
code_p->y_u.xps.s = -Signed(RealEnvSize) - CELLSIZE * cpc->rnd2;
}
GONEXT(xps);
}
return code_p;
}
inline static yamop *a_uv(Ventry *ve, op_numbers opcodex, op_numbers opcodexw,
op_numbers opcodey, op_numbers opcodeyw,
yamop *code_p, int pass_no) {
OPREG var_offset;
int is_y_var = (ve->KindOfVE == PermVar);
var_offset = Var_Ref(ve, is_y_var);
if (is_y_var) {
if (pass_no) {
code_p->opc = emit_op(opcodey);
code_p->y_u.oy.opcw = emit_op(opcodeyw);
code_p->y_u.oy.y = emit_yreg(var_offset);
}
GONEXT(oy);
} else {
if (pass_no) {
code_p->opc = emit_op(opcodex);
code_p->y_u.ox.opcw = emit_op(opcodexw);
code_p->y_u.ox.x = emit_xreg(var_offset);
}
GONEXT(ox);
}
return code_p;
}
inline static yamop *a_vv(op_numbers opcode, op_numbers opcodew, yamop *code_p,
int pass_no, struct intermediates *cip) {
Ventry *ve = (Ventry *)cip->cpc->rnd1;
int is_y_var = (ve->KindOfVE == PermVar);
if (pass_no) {
OPREG var_offset = Var_Ref(ve, is_y_var);
code_p->opc = emit_op(opcode);
code_p->y_u.oxx.opcw = emit_op(opcodew);
code_p->y_u.oxx.xl = emit_xreg(var_offset);
}
cip->cpc = cip->cpc->nextInst;
if (pass_no) {
OPREG var_offset;
int is_y_var;
ve = (Ventry *)cip->cpc->rnd1;
is_y_var = (ve->KindOfVE == PermVar);
var_offset = Var_Ref(ve, is_y_var);
code_p->y_u.oxx.xr = emit_xreg(var_offset);
}
GONEXT(oxx);
return code_p;
}
inline static yamop *a_vr(op_numbers opcodex, op_numbers opcodey, yamop *code_p,
int pass_no, struct intermediates *cip) {
struct PSEUDO *cpc = cip->cpc;
Ventry *ve = (Ventry *)cpc->rnd1;
int is_y_var = (ve->KindOfVE == PermVar);
if (is_y_var) {
if (opcodey == _put_y_val) {
struct PSEUDO *ncpc = cpc->nextInst;
if (ncpc->op == put_val_op &&
((Ventry *)ncpc->rnd1)->KindOfVE == PermVar) {
/* peephole! two put_y_vars in a row */
if (pass_no) {
OPREG var_offset;
OPREG var_offset2;
Ventry *ve2 = (Ventry *)ncpc->rnd1;
var_offset = Var_Ref(ve, is_y_var);
code_p->opc = emit_op(_put_y_vals);
code_p->y_u.yyxx.y1 = emit_yreg(var_offset);
code_p->y_u.yyxx.x1 = emit_x(cpc->rnd2);
var_offset2 = Var_Ref(ve2, is_y_var);
code_p->y_u.yyxx.y2 = emit_yreg(var_offset2);
code_p->y_u.yyxx.x2 = emit_x(ncpc->rnd2);
}
cip->cpc = ncpc;
GONEXT(yyxx);
return code_p;
/* simplify unification code */
} else if (FALSE && cpc->rnd2 == 0 && ncpc->op == get_var_op &&
ncpc->rnd2 == 0 &&
((Ventry *)ncpc->rnd1)->KindOfVE != PermVar) {
if (pass_no) {
OPREG var_offset;
OPREG var_offset2;
Ventry *ve2 = (Ventry *)ncpc->rnd1;
code_p->opc = emit_op(_put_y_var);
var_offset = Var_Ref(ve, is_y_var);
var_offset2 = Var_Ref(ve2, !is_y_var);
code_p->y_u.yx.x = emit_xreg(var_offset2);
code_p->y_u.yx.y = emit_yreg(var_offset);
}
cip->cpc = ncpc;
GONEXT(yx);
return code_p;
}
} else if (opcodey == _get_y_var) {
struct PSEUDO *ncpc = cpc->nextInst;
if (ncpc->op == get_var_op &&
((Ventry *)ncpc->rnd1)->KindOfVE == PermVar) {
/* peephole! two put_y_vars in a row */
if (pass_no) {
OPREG var_offset;
OPREG var_offset2;
Ventry *ve2 = (Ventry *)ncpc->rnd1;
var_offset = Var_Ref(ve, is_y_var);
code_p->opc = emit_op(_get_yy_var);
code_p->y_u.yyxx.y1 = emit_yreg(var_offset);
code_p->y_u.yyxx.x1 = emit_x(cpc->rnd2);
var_offset2 = Var_Ref(ve2, is_y_var);
code_p->y_u.yyxx.y2 = emit_yreg(var_offset2);
code_p->y_u.yyxx.x2 = emit_x(ncpc->rnd2);
}
cip->cpc = ncpc;
GONEXT(yyxx);
return code_p;
}
}
if (pass_no) {
OPREG var_offset;
var_offset = Var_Ref(ve, is_y_var);
code_p->opc = emit_op(opcodey);
code_p->y_u.yx.y = emit_yreg(var_offset);
code_p->y_u.yx.x = emit_x(cpc->rnd2);
}
GONEXT(yx);
return code_p;
}
if (opcodex == _put_x_val && cpc->nextInst) {
if (cpc->nextInst->op == put_val_op &&
!(((Ventry *)cpc->nextInst->rnd1)->KindOfVE == PermVar)) {
PInstr *ncpc = cpc->nextInst;
/* peephole! two put_x_vars in a row */
if (pass_no) {
OPREG var_offset;
OPREG var_offset2;
Ventry *ve2 = (Ventry *)ncpc->rnd1;
var_offset = Var_Ref(ve, is_y_var);
code_p->opc = emit_op(_put_xx_val);
code_p->y_u.xxxx.xl1 = emit_xreg(var_offset);
code_p->y_u.xxxx.xr1 = emit_x(cpc->rnd2);
var_offset2 = Var_Ref(ve2, is_y_var);
code_p->y_u.xxxx.xl2 = emit_xreg(var_offset2);
code_p->y_u.xxxx.xr2 = emit_x(ncpc->rnd2);
}
cip->cpc = ncpc;
GONEXT(xxxx);
return code_p;
/* simplify unification */
} else if (cpc->rnd2 == 0 && cpc->nextInst->rnd2 == 0) {
OPREG var_offset;
OPREG var_offset2;
Ventry *ve2;
int is_y_var2;
PInstr *ncpc;
ncpc = cpc->nextInst;
ve2 = (Ventry *)ncpc->rnd1;
is_y_var2 = (ve2->KindOfVE == PermVar);
/* put + get */
if (ncpc->op == get_var_op || ncpc->op == get_val_op) {
if (is_y_var2) {
if (pass_no) {
var_offset = Var_Ref(ve, is_y_var);
var_offset2 = Var_Ref(ve2, is_y_var2);
if (ncpc->op == get_var_op)
code_p->opc = emit_op(_get_y_var);
else
code_p->opc = emit_op(_get_y_val);
code_p->y_u.yx.x = emit_xreg(var_offset);
code_p->y_u.yx.y = emit_yreg(var_offset2);
}
GONEXT(yx);
cip->cpc = ncpc;
return code_p;
} else {
if (pass_no) {
var_offset = Var_Ref(ve, is_y_var);
var_offset2 = Var_Ref(ve2, is_y_var2);
code_p->y_u.xx.xl = emit_xreg(var_offset);
code_p->y_u.xx.xr = emit_xreg(var_offset2);
if (ncpc->op == get_var_op)
code_p->opc = emit_op(_put_x_val);
else {
code_p->opc = emit_op(_get_x_val);
}
}
GONEXT(xx);
cip->cpc = ncpc;
return code_p;
}
}
}
}
if (pass_no) {
OPREG var_offset;
var_offset = Var_Ref(ve, is_y_var);
code_p->opc = emit_op(opcodex);
code_p->y_u.xx.xl = emit_xreg(var_offset);
code_p->y_u.xx.xr = emit_x(cpc->rnd2);
/* a small trick, usualy the lower argument is the one bound */
if (opcodex == _get_x_val && code_p->y_u.xx.xl > code_p->y_u.xx.xr) {
wamreg x1 = code_p->y_u.xx.xl;
code_p->y_u.xx.xl = code_p->y_u.xx.xr;
code_p->y_u.xx.xr = x1;
}
}
GONEXT(xx);
return code_p;
}
inline static yamop *a_rv(op_numbers opcodex, op_numbers opcodey,
OPREG var_offset, yamop *code_p, int pass_no,
struct PSEUDO *cpc) {
Ventry *ve = (Ventry *)cpc->rnd1;
int is_y_var = (ve->KindOfVE == PermVar);
if (is_y_var) {
if (pass_no) {
code_p->opc = emit_op(opcodey);
code_p->y_u.yx.x = emit_x(cpc->rnd2);
code_p->y_u.yx.y = emit_yreg(var_offset);
}
GONEXT(yx);
} else {
if (pass_no) {
code_p->opc = emit_op(opcodex);
code_p->y_u.xx.xl = emit_x(cpc->rnd2);
code_p->y_u.xx.xr = emit_xreg(var_offset);
}
GONEXT(xx);
}
return code_p;
}
#ifdef SFUNC
/* vsc: I don't understand these instructions */
inline static void a_vsf(int opcode, yamop *code_p, int pass_no,
struct PSEUDO *cpc) {
Ventry *ve = (Ventry *)cpc->rnd1;
OPREG var_offset;
int is_y_var = (ve->KindOfVE == PermVar);
var_offset = Var_Ref(ve, is_y_var);
if (is_y_var) {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->y_u.fy.f = emit_f(cpc->rnd2);
code_p->y_u.fy.a = ArityOfFunctor(emit_f(cpc->rnd2));
code_p->y_u.fy.y = emit_yreg(var_offset);
}
GONEXT(fy);
} else {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->y_u.fx.f = emit_f(cpc->rnd2);
code_p->y_u.fx.a = ArityOfFunctor(emit_f(cpc->rnd2));
code_p->y_u.fx.x = emit_xreg(var_offset);
}
GONEXT(fx);
}
return code_p;
}
inline static void a_asf(int opcode, yamop *code_p, int pass_no,
struct PSEUDO *cpc) {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->y_u.fn.f = emit_f(cpc->rnd2);
code_p->y_u.fn.a = ArityOfFunctor(emit_f(cpc->rnd2));
code_p->y_u.fn.n = emit_count(cpc->rnd1);
}
GONEXT(fn);
return code_p;
}
#endif
inline static void a_pair(CELL *seq_ptr, int pass_no,
struct intermediates *cip) {
if (pass_no) {
CELL lab, lab0 = seq_ptr[1];
lab = (CELL)emit_ilabel(lab0, cip);
seq_ptr[0] = (CELL)emit_a(seq_ptr[0]);
seq_ptr[1] = lab;
}
}
inline static yamop *a_n(op_numbers opcode, int count, yamop *code_p,
int pass_no) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.s.s = count;
}
GONEXT(s);
return code_p;
}
#ifdef BEAM
inline static yamop *a_eam(op_numbers opcode, int pred, long cl, yamop *code_p,
int pass_no) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.os.opcw = cl;
code_p->y_u.os.s = pred;
}
GONEXT(os);
return code_p;
}
#endif
inline static yamop *a_un(op_numbers opcode, op_numbers opcodew, int count,
yamop *code_p, int pass_no) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.os.opcw = emit_op(opcodew);
code_p->y_u.os.s = count;
}
GONEXT(os);
return code_p;
}
inline static yamop *a_f(CELL rnd1, op_numbers opcode, yamop *code_p,
int pass_no) {
if (pass_no) {
Functor f = emit_f(rnd1);
code_p->opc = emit_op(opcode);
code_p->y_u.fa.f = f;
code_p->y_u.fa.a = ArityOfFunctor(f);
}
GONEXT(fa);
return code_p;
}
inline static yamop *a_uf(CELL rnd1, op_numbers opcode, op_numbers opcodew,
yamop *code_p, int pass_no) {
if (pass_no) {
Functor f = emit_f(rnd1);
code_p->opc = emit_op(opcode);
code_p->y_u.ofa.opcw = emit_op(opcodew);
code_p->y_u.ofa.f = f;
code_p->y_u.ofa.a = ArityOfFunctor(f);
}
GONEXT(ofa);
return code_p;
}
inline static yamop *a_c(CELL rnd1, op_numbers opcode, yamop *code_p,
int pass_no) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.c.c = emit_c(rnd1);
}
GONEXT(c);
return code_p;
}
inline static yamop *a_uc(CELL rnd1, op_numbers opcode, op_numbers opcode_w,
yamop *code_p, int pass_no) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.oc.opcw = emit_op(opcode_w);
code_p->y_u.oc.c = emit_c(rnd1);
}
GONEXT(oc);
return code_p;
}
inline static yamop *a_wblob(CELL rnd1, op_numbers opcode,
int *clause_has_blobsp, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.N.b =
AbsAppl((CELL *)(Unsigned(cip->code_addr) + cip->label_offset[rnd1]));
}
*clause_has_blobsp = TRUE;
GONEXT(N);
return code_p;
}
static yamop *a_ensure_space(op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip, clause_info *clinfo) {
if (cip->cpc->rnd1 > 4096) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.Osbpa.i = sizeof(CELL) * cip->cpc->rnd1;
code_p->y_u.Osbpa.p = clinfo->CurrentPred;
code_p->y_u.Osbpa.bmap = NULL;
code_p->y_u.Osbpa.s = emit_count(-Signed(RealEnvSize));
}
GONEXT(Osbpa);
}
return code_p;
}
inline static yamop *a_wdbt(CELL rnd1, op_numbers opcode,
int *clause_has_dbtermp, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.D.D = rnd1;
add_to_dbtermsl(cip, cip->cpc->rnd1);
}
*clause_has_dbtermp = TRUE;
GONEXT(D);
return code_p;
}
inline static yamop *a_ublob(CELL rnd1, op_numbers opcode, op_numbers opcode_w,
int *clause_has_blobsp, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.oN.opcw = emit_op(opcode_w);
code_p->y_u.oN.b =
AbsAppl((CELL *)(Unsigned(cip->code_addr) + cip->label_offset[rnd1]));
}
*clause_has_blobsp = TRUE;
GONEXT(oN);
return code_p;
}
// strings are blobs
inline static yamop *a_ustring(CELL rnd1, op_numbers opcode,
op_numbers opcode_w, int *clause_has_blobsp,
yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.ou.opcw = emit_op(opcode_w);
code_p->y_u.ou.ut =
AbsAppl((CELL *)(Unsigned(cip->code_addr) + cip->label_offset[rnd1]));
}
*clause_has_blobsp = TRUE;
GONEXT(ou);
return code_p;
}
inline static yamop *a_udbt(CELL rnd1, op_numbers opcode, op_numbers opcode_w,
int *clause_has_dbtermp, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.oD.opcw = emit_op(opcode_w);
code_p->y_u.oD.D = cip->cpc->rnd1;
add_to_dbtermsl(cip, cip->cpc->rnd1);
}
*clause_has_dbtermp = TRUE;
GONEXT(oD);
return code_p;
}
inline static yamop *a_ud(op_numbers opcode, op_numbers opcode_w, yamop *code_p,
int pass_no, struct PSEUDO *cpc) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.od.opcw = emit_op(opcode_w);
code_p->y_u.od.d[0] = (CELL)FunctorDouble;
code_p->y_u.od.d[1] = RepAppl(cpc->rnd1)[1];
#if SIZEOF_DOUBLE == 2 * SIZEOF_INT_P
code_p->y_u.od.d[2] = RepAppl(cpc->rnd1)[2];
#endif
}
GONEXT(od);
return code_p;
}
inline static yamop *a_ui(op_numbers opcode, op_numbers opcode_w, yamop *code_p,
int pass_no, struct PSEUDO *cpc) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.oi.opcw = emit_op(opcode_w);
code_p->y_u.oi.i[0] = (CELL)FunctorLongInt;
code_p->y_u.oi.i[1] = RepAppl(cpc->rnd1)[1];
}
GONEXT(oi);
return code_p;
}
inline static yamop *a_wd(op_numbers opcode, yamop *code_p, int pass_no,
struct PSEUDO *cpc) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.d.d[0] = (CELL)FunctorDouble;
code_p->y_u.d.d[1] = RepAppl(cpc->rnd1)[1];
#if SIZEOF_DOUBLE == 2 * SIZEOF_INT_P
code_p->y_u.d.d[2] = RepAppl(cpc->rnd1)[2];
#endif
}
GONEXT(d);
return code_p;
}
inline static yamop *a_wi(op_numbers opcode, yamop *code_p, int pass_no,
struct PSEUDO *cpc) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.i.i[0] = (CELL)FunctorLongInt;
code_p->y_u.i.i[1] = RepAppl(cpc->rnd1)[1];
}
GONEXT(i);
return code_p;
}
inline static yamop *a_nc(CELL rnd1, op_numbers opcode, int i, yamop *code_p,
int pass_no) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.sc.s = i;
code_p->y_u.sc.c = emit_c(rnd1);
}
GONEXT(sc);
return code_p;
}
inline static yamop *a_unc(CELL rnd1, op_numbers opcode, op_numbers opcodew,
int i, yamop *code_p, int pass_no) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.osc.opcw = emit_op(opcodew);
code_p->y_u.osc.s = i;
code_p->y_u.osc.c = emit_c(rnd1);
}
GONEXT(osc);
return code_p;
}
inline static yamop *a_rf(op_numbers opcode, yamop *code_p, int pass_no,
struct PSEUDO *cpc) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.xfa.x = emit_x(cpc->rnd2);
code_p->y_u.xfa.f = emit_f(cpc->rnd1);
code_p->y_u.xfa.a = ArityOfFunctor(emit_f(cpc->rnd1));
}
GONEXT(xfa);
return code_p;
}
inline static yamop *a_rd(op_numbers opcode, yamop *code_p, int pass_no,
struct PSEUDO *cpc) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.xd.x = emit_x(cpc->rnd2);
code_p->y_u.xd.d[0] = (CELL)FunctorDouble;
code_p->y_u.xd.d[1] = RepAppl(cpc->rnd1)[1];
#if SIZEOF_DOUBLE == 2 * SIZEOF_INT_P
code_p->y_u.xd.d[2] = RepAppl(cpc->rnd1)[2];
#endif
}
GONEXT(xd);
return code_p;
}
inline static yamop *a_ri(op_numbers opcode, yamop *code_p, int pass_no,
struct PSEUDO *cpc) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.xi.x = emit_x(cpc->rnd2);
code_p->y_u.xi.i[0] = (CELL)FunctorLongInt;
code_p->y_u.xi.i[1] = RepAppl(cpc->rnd1)[1];
}
GONEXT(xi);
return code_p;
}
static yamop *a_rc(op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (cip->cpc->rnd2 == 1 && cip->cpc->nextInst->rnd2 == 2 &&
(cip->cpc->nextInst->op == get_atom_op ||
cip->cpc->nextInst->op == get_num_op)) {
struct PSEUDO *next;
next = cip->cpc->nextInst;
if (next->nextInst->rnd2 == 3 && (next->nextInst->op == get_atom_op ||
next->nextInst->op == get_num_op)) {
struct PSEUDO *snext = next->nextInst;
if (snext->nextInst->rnd2 == 4 && (snext->nextInst->op == get_atom_op ||
snext->nextInst->op == get_num_op)) {
struct PSEUDO *s2next = snext->nextInst;
if (s2next->nextInst->rnd2 == 5 &&
(s2next->nextInst->op == get_atom_op ||
s2next->nextInst->op == get_num_op)) {
struct PSEUDO *s3next = s2next->nextInst;
if (s3next->nextInst->rnd2 == 6 &&
(s3next->nextInst->op == get_atom_op ||
s3next->nextInst->op == get_num_op)) {
if (pass_no) {
code_p->opc = emit_op(_get_6atoms);
code_p->y_u.cccccc.c1 = emit_c(cip->cpc->rnd1);
code_p->y_u.cccccc.c2 = emit_c(next->rnd1);
code_p->y_u.cccccc.c3 = emit_c(snext->rnd1);
code_p->y_u.cccccc.c4 = emit_c(s2next->rnd1);
code_p->y_u.cccccc.c5 = emit_c(s3next->rnd1);
code_p->y_u.cccccc.c6 = emit_c(s3next->nextInst->rnd1);
}
cip->cpc = s3next->nextInst;
GONEXT(cccccc);
} else {
if (pass_no) {
code_p->opc = emit_op(_get_5atoms);
code_p->y_u.ccccc.c1 = emit_c(cip->cpc->rnd1);
code_p->y_u.ccccc.c2 = emit_c(next->rnd1);
code_p->y_u.ccccc.c3 = emit_c(snext->rnd1);
code_p->y_u.ccccc.c4 = emit_c(s2next->rnd1);
code_p->y_u.ccccc.c5 = emit_c(s3next->rnd1);
}
cip->cpc = s3next;
GONEXT(ccccc);
}
} else {
if (pass_no) {
code_p->opc = emit_op(_get_4atoms);
code_p->y_u.cccc.c1 = emit_c(cip->cpc->rnd1);
code_p->y_u.cccc.c2 = emit_c(next->rnd1);
code_p->y_u.cccc.c3 = emit_c(snext->rnd1);
code_p->y_u.cccc.c4 = emit_c(s2next->rnd1);
}
cip->cpc = s2next;
GONEXT(cccc);
}
} else {
if (pass_no) {
code_p->opc = emit_op(_get_3atoms);
code_p->y_u.ccc.c1 = emit_c(cip->cpc->rnd1);
code_p->y_u.ccc.c2 = emit_c(next->rnd1);
code_p->y_u.ccc.c3 = emit_c(snext->rnd1);
}
cip->cpc = snext;
GONEXT(ccc);
}
} else {
if (pass_no) {
code_p->opc = emit_op(_get_2atoms);
code_p->y_u.cc.c1 = emit_c(cip->cpc->rnd1);
code_p->y_u.cc.c2 = emit_c(next->rnd1);
}
cip->cpc = next;
GONEXT(cc);
}
} else {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.xc.x = emit_x(cip->cpc->rnd2);
code_p->y_u.xc.c = emit_c(cip->cpc->rnd1);
}
GONEXT(xc);
}
return code_p;
}
inline static yamop *a_rb(op_numbers opcode, int *clause_has_blobsp,
yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.xN.x = emit_x(cip->cpc->rnd2);
code_p->y_u.xN.b = AbsAppl(
(CELL *)(Unsigned(cip->code_addr) + cip->label_offset[cip->cpc->rnd1]));
}
*clause_has_blobsp = TRUE;
GONEXT(xN);
return code_p;
}
inline static yamop *a_rstring(op_numbers opcode, int *clause_has_blobsp,
yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.xu.x = emit_x(cip->cpc->rnd2);
code_p->y_u.xu.ut = AbsAppl(
(CELL *)(Unsigned(cip->code_addr) + cip->label_offset[cip->cpc->rnd1]));
}
*clause_has_blobsp = TRUE;
GONEXT(xu);
return code_p;
}
inline static yamop *a_dbt(op_numbers opcode, int *clause_has_dbtermp,
yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.xD.x = emit_x(cip->cpc->rnd2);
code_p->y_u.xD.D = cip->cpc->rnd1;
add_to_dbtermsl(cip, cip->cpc->rnd1);
}
*clause_has_dbtermp = TRUE;
GONEXT(xD);
return code_p;
}
inline static yamop *a_r(CELL arnd2, op_numbers opcode, yamop *code_p,
int pass_no) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.x.x = emit_x(arnd2);
}
GONEXT(x);
return code_p;
}
static yamop *check_alloc(clause_info *clinfo, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (clinfo->alloc_found == 2) {
if (clinfo->CurrentPred->PredFlags & LogUpdatePredFlag)
code_p = a_cle(_alloc_for_logical_pred, code_p, pass_no, cip);
code_p = a_e(_allocate, code_p, pass_no);
clinfo->alloc_found = 1;
}
return code_p;
}
static yamop *a_l(CELL rnd1, op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.l.l =
emit_a(Unsigned(cip->code_addr) + cip->label_offset[rnd1]);
}
GONEXT(l);
return code_p;
}
static yamop *a_il(CELL rnd1, op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.l.l = emit_ilabel(rnd1, cip);
}
GONEXT(l);
return code_p;
}
static yamop *
a_p(op_numbers opcode, clause_info *clinfo, yamop *code_p, int pass_no,
struct intermediates *cip) { /* emit opcode & predicate code address */
Prop fe = (Prop)(cip->cpc->rnd1);
CELL Flags = RepPredProp(fe)->PredFlags;
if (Flags & AsmPredFlag) {
op_numbers op;
int is_test = FALSE;
switch (Flags & 0x7f) {
case _equal:
op = _p_equal;
break;
#if INLINE_BIG_COMPARISONS
case _dif:
op = _p_dif;
is_test = true;
break;
case _eq:
op = _p_eq;
is_test = true;
break;
#endif
case _functor:
code_p = check_alloc(clinfo, code_p, pass_no, cip);
op = _p_functor;
break;
default:
// op = _p_equal; /* just to make some compilers happy */
Yap_Error(SYSTEM_ERROR_COMPILER, TermNil,
"internal assembler error for built-in (%d)", (Flags & 0x7f));
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
}
if (is_test) {
UInt lab;
if ((lab = cip->failure_handler)) {
return a_l(lab, op, code_p, pass_no, cip);
} else {
return a_il((CELL)FAILCODE, op, code_p, pass_no, cip);
}
} else {
return a_e(op, code_p, pass_no);
}
}
if (Flags & CPredFlag && opcode == _call) {
code_p = check_alloc(clinfo, code_p, pass_no, cip);
if (cip->failure_handler && (Flags & TestPredFlag)) {
if (pass_no) {
if (Flags & UserCPredFlag) {
Yap_Error(SYSTEM_ERROR_COMPILER, TermNil,
"user defined predicate cannot be a test predicate");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
} else
code_p->opc = emit_op(_call_c_wfail);
code_p->y_u.slpp.s =
emit_count(-Signed(RealEnvSize) - CELLSIZE * cip->cpc->rnd2);
code_p->y_u.slpp.l = emit_fail(cip);
code_p->y_u.slpp.p0 = clinfo->CurrentPred;
code_p->y_u.slpp.p = emit_pe(RepPredProp(fe));
}
GONEXT(slpp);
} else {
if (pass_no) {
code_p->y_u.Osbpp.p = RepPredProp(fe);
if (Flags & UserCPredFlag) {
code_p->opc = emit_op(_call_usercpred);
} else {
if (RepPredProp(fe)->FunctorOfPred == FunctorExecuteInMod) {
code_p->y_u.Osbmp.mod = cip->cpc->rnd4;
code_p->opc = emit_op(_p_execute);
} else if (RepPredProp(fe)->FunctorOfPred == FunctorExecute2InMod) {
code_p->opc = emit_op(_p_execute2);
} else {
code_p->opc = emit_op(_call_cpred);
}
}
code_p->y_u.Osbpp.s =
emit_count(-Signed(RealEnvSize) - CELLSIZE * (cip->cpc->rnd2));
code_p->y_u.Osbpp.p0 = clinfo->CurrentPred;
if (cip->cpc->rnd2) {
code_p->y_u.Osbpp.bmap = emit_bmlabel(cip->cpc->arnds[1], cip);
} else {
/* there is no bitmap as there are no variables in the environment */
code_p->y_u.Osbpp.bmap = NULL;
}
}
GONEXT(Osbpp);
}
return code_p;
}
if (opcode == _call && clinfo->alloc_found == 2) {
if (clinfo->CurrentPred->PredFlags & LogUpdatePredFlag)
code_p = a_cle(_alloc_for_logical_pred, code_p, pass_no, cip);
if (pass_no) {
code_p->opc = emit_op(_fcall);
}
clinfo->alloc_found = 1;
} else {
code_p = check_alloc(clinfo, code_p, pass_no, cip);
if (pass_no)
code_p->opc = emit_op(opcode);
}
if (opcode == _call) {
if (pass_no) {
code_p->y_u.Osbpp.s =
emit_count(-Signed(RealEnvSize) - CELLSIZE * cip->cpc->rnd2);
code_p->y_u.Osbpp.p = RepPredProp(fe);
code_p->y_u.Osbpp.p0 = clinfo->CurrentPred;
if (cip->cpc->rnd2)
code_p->y_u.Osbpp.bmap = emit_bmlabel(cip->cpc->arnds[1], cip);
else
/* there is no bitmap as there are no variables in the environment */
code_p->y_u.Osbpp.bmap = NULL;
}
GONEXT(Osbpp);
} else if (opcode == _execute || opcode == _dexecute) {
if (pass_no) {
if (Flags & CPredFlag) {
code_p->opc = emit_op(_execute_cpred);
}
code_p->y_u.Osbpp.p = RepPredProp(fe);
code_p->y_u.Osbpp.p0 = clinfo->CurrentPred;
code_p->y_u.Osbpp.s = 0;
code_p->y_u.Osbpp.bmap = NULL;
}
GONEXT(Osbpp);
} else {
if (pass_no)
code_p->y_u.p.p = RepPredProp(fe);
GONEXT(p);
}
return code_p;
}
/*
emit a false call so that the garbage collector and friends will find
reasonable information on the stack.
*/
static yamop *a_empty_call(clause_info *clinfo, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (clinfo->alloc_found == 1 && !clinfo->dealloc_found) {
/* we have a solid environment under us, just trust it */
if (pass_no)
code_p->opc = emit_op(_call);
} else {
/** oops, our environment is crap */
if (pass_no)
code_p->opc = emit_op(_fcall);
}
if (pass_no) {
PredEntry *pe = RepPredProp(Yap_GetPredPropByAtom(AtomTrue, 0));
code_p->y_u.Osbpp.s =
emit_count(-Signed(RealEnvSize) - CELLSIZE * cip->cpc->rnd2);
code_p->y_u.Osbpp.p = pe;
code_p->y_u.Osbpp.p0 = clinfo->CurrentPred;
if (cip->cpc->rnd2)
code_p->y_u.Osbpp.bmap = emit_bmlabel(cip->cpc->rnd1, cip);
else
/* there is no bitmap as there are no variables in the environment */
code_p->y_u.Osbpp.bmap = NULL;
}
GONEXT(Osbpp);
return code_p;
}
static yamop *a_pl(op_numbers opcode, PredEntry *pred, yamop *code_p,
int pass_no) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.p.p = pred;
}
GONEXT(p);
return code_p;
}
static COUNT
compile_cmp_flags(unsigned char *s0) {
char *s = (char *)s0;
if (strcmp(s, "=<") == 0)
return EQ_OK_IN_CMP | LT_OK_IN_CMP;
if (strcmp(s, "is") == 0)
return EQ_OK_IN_CMP;
if (strcmp(s, "@=<") == 0)
return EQ_OK_IN_CMP | LT_OK_IN_CMP;
if (strcmp(s, "<") == 0)
return LT_OK_IN_CMP;
if (strcmp(s, "@<") == 0)
return LT_OK_IN_CMP;
if (strcmp(s, ">=") == 0)
return EQ_OK_IN_CMP | GT_OK_IN_CMP;
if (strcmp(s, "@>=") == 0)
return EQ_OK_IN_CMP | GT_OK_IN_CMP;
if (strcmp(s, ">") == 0)
return GT_OK_IN_CMP;
if (strcmp(s, "@>") == 0)
return GT_OK_IN_CMP;
if (strcmp(s, "=:=") == 0)
return EQ_OK_IN_CMP;
if (strcmp(s, "=\\=") == 0)
return GT_OK_IN_CMP | LT_OK_IN_CMP;
if (strcmp(s, "\\==") == 0)
return GT_OK_IN_CMP | LT_OK_IN_CMP;
Yap_Error(SYSTEM_ERROR_COMPILER, TermNil,
"internal assembler error, %s/2 not recognised as binary op", s);
return 0;
}
COUNT
Yap_compile_cmp_flags(PredEntry *pred) {
return compile_cmp_flags(
RepAtom(NameOfFunctor(pred->FunctorOfPred))->UStrOfAE);
}
static yamop *a_bfunc(CELL a1, CELL a2, PredEntry *pred, clause_info *clinfo,
yamop *code_p, int pass_no, struct intermediates *cip) {
Ventry *ve1 = (Ventry *)a1;
Ventry *ve2 = (Ventry *)a2;
OPREG var_offset1;
int is_y_var = (ve1->KindOfVE == PermVar);
var_offset1 = Var_Ref(ve1, is_y_var);
if (ve1->KindOfVE == PermVar) {
yslot v1 = emit_yreg(var_offset1);
bool is_y_var2 = (ve2->KindOfVE == PermVar);
OPREG var_offset2 = Var_Ref(ve2, is_y_var2);
if (is_y_var2) {
if (pass_no) {
code_p->opc = emit_op(_call_bfunc_yy);
code_p->y_u.plyys.p = pred;
code_p->y_u.plyys.f = emit_fail(cip);
code_p->y_u.plyys.y1 = v1;
code_p->y_u.plyys.y2 = emit_yreg(var_offset2);
code_p->y_u.plyys.flags = compile_cmp_flags(
RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))
->UStrOfAE);
}
GONEXT(plyys);
} else {
if (pass_no) {
code_p->opc = emit_op(_call_bfunc_yx);
code_p->y_u.plxys.p = pred;
code_p->y_u.plxys.f = emit_fail(cip);
code_p->y_u.plxys.x = emit_xreg(var_offset2);
code_p->y_u.plxys.y = v1;
code_p->y_u.plxys.flags = compile_cmp_flags(
RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))
->UStrOfAE);
}
GONEXT(plxys);
}
} else {
wamreg x1 = emit_xreg(var_offset1);
OPREG var_offset2;
bool is_y_var2 = (ve2->KindOfVE == PermVar);
var_offset2 = Var_Ref(ve2, is_y_var2);
if (is_y_var2) {
if (pass_no) {
code_p->opc = emit_op(_call_bfunc_xy);
code_p->y_u.plxys.p = pred;
code_p->y_u.plxys.f = emit_fail(cip);
code_p->y_u.plxys.x = x1;
code_p->y_u.plxys.y = emit_yreg(var_offset2);
code_p->y_u.plxys.flags = compile_cmp_flags(
RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))
->UStrOfAE);
}
GONEXT(plxys);
} else {
if (pass_no) {
// printf(" %p --- %p\n", x1, emit_xreg(var_offset2) );
code_p->opc = emit_op(_call_bfunc_xx);
code_p->y_u.plxxs.p = pred;
code_p->y_u.plxxs.f = emit_fail(cip);
code_p->y_u.plxxs.x1 = x1;
code_p->y_u.plxxs.x2 = emit_xreg(var_offset2);
code_p->y_u.plxxs.flags = compile_cmp_flags(
RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))
->UStrOfAE);
}
GONEXT(plxxs);
}
}
return code_p;
}
static yamop *a_igl(CELL rnd1, op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.l.l = emit_ilabel(rnd1, cip);
}
GONEXT(l);
return code_p;
}
static yamop *a_xigl(op_numbers opcode, yamop *code_p, int pass_no,
struct PSEUDO *cpc) {
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.xll.x = emit_x(cpc->rnd2);
code_p->y_u.xll.l1 = emit_a(cpc->rnd1);
code_p->y_u.xll.l2 = NEXTOP(code_p, xll);
}
GONEXT(xll);
return code_p;
}
/* enable peephole optimisation for switch_on_term to switch_on_list */
static int is_switch_on_list(op_numbers opcode, struct intermediates *cip) {
struct PSEUDO *cpc = cip->cpc, *ncpc, *n2cpc;
CELL *if_table;
/* only do this is indexing code is stable */
if (cip->CurrentPred->PredFlags & LogUpdatePredFlag)
return FALSE;
/* check if we are transforming a switch_on_type */
if (opcode != _switch_on_type)
return FALSE;
/* should have two instructions next */
if ((ncpc = cpc->nextInst) == NULL || (n2cpc = ncpc->nextInst) == NULL)
return FALSE;
/* one a label, the other an if_constant */
if (ncpc->op != label_op || n2cpc->op != if_c_op)
return FALSE;
/* the label for the constant case should be the if_c label
(this should always hold) */
if (cpc->arnds[1] != ncpc->rnd1)
return FALSE;
if_table = (CELL *)(n2cpc->rnd2);
/* the constant switch should only have the empty list */
if (n2cpc->rnd1 != 1 || if_table[0] != TermNil)
return FALSE;
/*
should be pointing to a clause so that we can push the clause opcode,
this should be fixable;
also, we need to go what's in there, so it cannot be suspend code!
*/
if (cpc->arnds[0] & 1 ||
(yamop *)(cpc->arnds[0]) ==
(yamop *)(&(cip->CurrentPred->cs.p_code.ExpandCode)))
return FALSE;
/* Appl alternative should be pointing to same point as [] alternative,
usually FAILCODE */
if (if_table[3] != cpc->arnds[2])
return FALSE;
/* yesss!! */
return TRUE;
}
static yamop *a_4sw(op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip) {
CELL *seq_ptr;
if (is_switch_on_list(opcode, cip)) {
if (pass_no) {
CELL *ars = (CELL *)(cip->cpc->nextInst->nextInst->rnd2);
code_p->opc = emit_op(_switch_list_nl);
seq_ptr = cip->cpc->arnds;
code_p->y_u.ollll.pop = ((yamop *)(seq_ptr[0]))->opc;
code_p->y_u.ollll.l1 = emit_ilabel(seq_ptr[0], cip);
code_p->y_u.ollll.l2 = emit_ilabel(ars[1], cip);
code_p->y_u.ollll.l3 = emit_ilabel(seq_ptr[2], cip);
code_p->y_u.ollll.l4 = emit_ilabel(seq_ptr[3], cip);
if (cip->CurrentPred->PredFlags & LogUpdatePredFlag) {
LogUpdIndex *icl = ClauseCodeToLogUpdIndex(ars);
Yap_LUIndexSpace_Tree -= icl->ClSize;
Yap_FreeCodeSpace((char *)icl);
} else {
StaticIndex *icl = ClauseCodeToStaticIndex(ars);
Yap_IndexSpace_Tree -= icl->ClSize;
Yap_FreeCodeSpace((char *)icl);
}
}
GONEXT(ollll);
/* skip if_cons */
cip->cpc = cip->cpc->nextInst->nextInst;
} else {
if (pass_no) {
code_p->opc = emit_op(opcode);
seq_ptr = cip->cpc->arnds;
code_p->y_u.llll.l1 = emit_ilabel(seq_ptr[0], cip);
code_p->y_u.llll.l2 = emit_ilabel(seq_ptr[1], cip);
code_p->y_u.llll.l3 = emit_ilabel(seq_ptr[2], cip);
code_p->y_u.llll.l4 = emit_ilabel(seq_ptr[3], cip);
}
GONEXT(llll);
}
return code_p;
}
static yamop *a_4sw_x(op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip) {
CELL *seq_ptr;
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.xllll.x = emit_x(cip->cpc->rnd2);
cip->cpc = cip->cpc->nextInst;
seq_ptr = cip->cpc->arnds;
code_p->y_u.xllll.l1 = emit_ilabel(seq_ptr[0], cip);
code_p->y_u.xllll.l2 = emit_ilabel(seq_ptr[1], cip);
code_p->y_u.xllll.l3 = emit_ilabel(seq_ptr[2], cip);
code_p->y_u.xllll.l4 = emit_ilabel(seq_ptr[3], cip);
} else {
/* skip one */
cip->cpc = cip->cpc->nextInst;
}
GONEXT(xllll);
return code_p;
}
static yamop *a_4sw_s(op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip) {
CELL *seq_ptr;
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.sllll.s = cip->cpc->rnd2;
cip->cpc = cip->cpc->nextInst;
seq_ptr = cip->cpc->arnds;
code_p->y_u.sllll.l1 = emit_ilabel(seq_ptr[0], cip);
code_p->y_u.sllll.l2 = emit_ilabel(seq_ptr[1], cip);
code_p->y_u.sllll.l3 = emit_ilabel(seq_ptr[2], cip);
code_p->y_u.sllll.l4 = emit_ilabel(seq_ptr[3], cip);
} else {
/* skip one */
cip->cpc = cip->cpc->nextInst;
}
GONEXT(sllll);
return code_p;
}
static void init_log_upd_table(LogUpdIndex *ic, union clause_obj *cl_u) {
/* insert myself in the indexing code chain */
ic->SiblingIndex = cl_u->lui.ChildIndex;
if (ic->SiblingIndex) {
ic->SiblingIndex->PrevSiblingIndex = ic;
}
cl_u->lui.ChildIndex = ic;
ic->PrevSiblingIndex = NULL;
ic->ChildIndex = NULL;
ic->ClRefCount = 0;
ic->ParentIndex = (LogUpdIndex *)cl_u;
// INIT_LOCK(ic->ClLock);
cl_u->lui.ChildIndex = ic;
cl_u->lui.ClRefCount++;
}
static void init_static_table(StaticIndex *ic, union clause_obj *cl_u) {
/* insert myself in the indexing code chain */
ic->SiblingIndex = cl_u->si.ChildIndex;
ic->ChildIndex = NULL;
cl_u->si.ChildIndex = ic;
}
static yamop *a_hx(op_numbers opcode, union clause_obj *cl_u, int log_update,
yamop *code_p, int pass_no, struct intermediates *cip) {
register CELL i, imax;
register CELL *seq_ptr = (CELL *)cip->cpc->rnd2;
int j = 0;
imax = cip->cpc->rnd1;
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.sssl.s = emit_c(imax);
code_p->y_u.sssl.l = emit_a(cip->cpc->rnd2);
if (log_update) {
init_log_upd_table(ClauseCodeToLogUpdIndex(cip->cpc->rnd2), cl_u);
} else {
init_static_table(ClauseCodeToStaticIndex(cip->cpc->rnd2), cl_u);
}
}
if (pass_no) {
for (i = 0; i < imax; i++) {
yamop *ipc = (yamop *)seq_ptr[1];
a_pair(seq_ptr, pass_no, cip);
if (ipc != FAILCODE) {
j++;
}
seq_ptr += 2;
}
code_p->y_u.sssl.e = j;
code_p->y_u.sssl.w = 0;
}
GONEXT(sssl);
return code_p;
}
static yamop *a_if(op_numbers opcode, union clause_obj *cl_u, int log_update,
yamop *code_p, int pass_no, struct intermediates *cip) {
register CELL i, imax;
register CELL *seq_ptr = (CELL *)cip->cpc->rnd2;
imax = cip->cpc->rnd1;
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.sssl.s = code_p->y_u.sssl.e = emit_count(imax);
code_p->y_u.sssl.w = 0;
code_p->y_u.sssl.l = emit_a(cip->cpc->rnd2);
if (log_update) {
init_log_upd_table(ClauseCodeToLogUpdIndex(cip->cpc->rnd2), cl_u);
} else {
init_static_table(ClauseCodeToStaticIndex(cip->cpc->rnd2), cl_u);
}
}
GONEXT(sssl);
if (pass_no) {
CELL lab, lab0;
for (i = 0; i < imax; i++) {
a_pair(seq_ptr, pass_no, cip);
seq_ptr += 2;
}
lab0 = seq_ptr[1];
lab = (CELL)emit_ilabel(lab0, cip);
seq_ptr[1] = lab;
}
return code_p;
}
static yamop *a_ifnot(op_numbers opcode, yamop *code_p, int pass_no,
struct intermediates *cip) {
CELL *seq_ptr = cip->cpc->arnds;
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.clll.c = seq_ptr[0]; /* tag */
code_p->y_u.clll.l1 = emit_ilabel(seq_ptr[1], cip); /* success point */
code_p->y_u.clll.l2 = emit_ilabel(seq_ptr[2], cip); /* fail point */
code_p->y_u.clll.l3 = emit_ilabel(seq_ptr[3], cip); /* delay point */
}
GONEXT(clll);
return code_p;
}
static yamop *a_cut(clause_info *clinfo, yamop *code_p, int pass_no,
struct intermediates *cip) {
cip->clause_has_cut = TRUE;
code_p = check_alloc(clinfo, code_p, pass_no, cip);
if (clinfo->dealloc_found) {
return a_n(_cut_e, -Signed(RealEnvSize) - CELLSIZE * cip->cpc->rnd2, code_p,
pass_no);
} else if (clinfo->alloc_found == 1) {
return a_n(_cut, -Signed(RealEnvSize) - CELLSIZE * cip->cpc->rnd2, code_p,
pass_no);
} else {
return a_n(_cut_t, -Signed(RealEnvSize) - CELLSIZE * cip->cpc->rnd2, code_p,
pass_no);
}
}
static yamop *
#ifdef YAPOR
a_try(op_numbers opcode, CELL lab, CELL opr, int nofalts, int hascut,
yamop *code_p, int pass_no, struct intermediates *cip)
#else
a_try(op_numbers opcode, CELL lab, CELL opr, yamop *code_p, int pass_no,
struct intermediates *cip)
#endif /* YAPOR */
{
PredEntry *ap = cip->CurrentPred;
/* if predicates are logical do it in a different way */
if (ap->PredFlags & LogUpdatePredFlag) {
yamop *newcp;
/* emit a special instruction and then a label for backpatching */
if (pass_no) {
UInt size = (UInt)NEXTOP((yamop *)NULL, OtaLl);
if ((newcp = (yamop *)Yap_AllocCodeSpace(size)) == NULL) {
/* OOOPS, got in trouble, must do a longjmp and recover space */
save_machine_regs();
siglongjmp(cip->CompilerBotch, 2);
}
Yap_inform_profiler_of_clause(newcp, (char *)(newcp) + size, ap,
GPROF_INDEX);
Yap_LUIndexSpace_CP += size;
#ifdef DEBUG
Yap_NewCps++;
Yap_LiveCps++;
#endif
newcp->y_u.OtaLl.n = NULL;
*cip->current_try_lab = newcp;
if (opcode == _try_clause) {
newcp->opc = emit_op(_try_logical);
newcp->y_u.OtaLl.s = emit_count(opr);
} else if (opcode == _retry) {
if (ap->PredFlags & CountPredFlag)
newcp->opc = emit_op(_count_retry_logical);
else if (ap->PredFlags & ProfiledPredFlag) {
if (!Yap_initProfiler(ap)) {
return NULL;
}
newcp->opc = emit_op(_profiled_retry_logical);
} else
newcp->opc = emit_op(_retry_logical);
newcp->y_u.OtaLl.s = emit_count(opr);
} else {
/* trust */
if (ap->PredFlags & CountPredFlag) {
newcp->opc = emit_op(_count_trust_logical);
} else if (ap->PredFlags & ProfiledPredFlag) {
if (!Yap_initProfiler(ap)) {
return NULL;
}
newcp->opc = emit_op(_profiled_trust_logical);
} else {
newcp->opc = emit_op(_trust_logical);
}
newcp->y_u.OtILl.block = (LogUpdIndex *)(cip->code_addr);
*cip->current_trust_lab = newcp;
}
newcp->y_u.OtaLl.d = ClauseCodeToLogUpdClause(emit_a(lab));
cip->current_try_lab = &(newcp->y_u.OtaLl.n);
}
return code_p;
}
#ifndef YAPOR
switch (opr) {
case 2:
if (opcode == _try_clause) {
if (pass_no) {
code_p->opc = emit_op(_try_clause2);
code_p->y_u.l.l = emit_a(lab);
}
GONEXT(l);
return code_p;
} else if (opcode == _retry) {
if (pass_no) {
code_p->opc = emit_op(_retry2);
code_p->y_u.l.l = emit_a(lab);
}
GONEXT(l);
return code_p;
}
case 3:
if (opcode == _try_clause) {
if (pass_no) {
code_p->opc = emit_op(_try_clause3);
code_p->y_u.l.l = emit_a(lab);
}
GONEXT(l);
return code_p;
} else if (opcode == _retry) {
if (pass_no) {
code_p->opc = emit_op(_retry3);
code_p->y_u.l.l = emit_a(lab);
}
GONEXT(l);
return code_p;
}
case 4:
if (opcode == _try_clause) {
if (pass_no) {
code_p->opc = emit_op(_try_clause4);
code_p->y_u.l.l = emit_a(lab);
}
GONEXT(l);
return code_p;
} else if (opcode == _retry) {
if (pass_no) {
code_p->opc = emit_op(_retry4);
code_p->y_u.l.l = emit_a(lab);
}
GONEXT(l);
return code_p;
}
}
#endif
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.Otapl.d = emit_a(lab);
code_p->y_u.Otapl.s = emit_count(opr);
code_p->y_u.Otapl.p = ap;
#ifdef TABLING
code_p->y_u.Otapl.te = ap->TableOfPred;
#endif
#ifdef YAPOR
INIT_YAMOP_LTT(code_p, nofalts);
if (cip->clause_has_cut)
PUT_YAMOP_CUT(code_p);
if (ap->PredFlags & SequentialPredFlag)
PUT_YAMOP_SEQ(code_p);
#endif /* YAPOR */
}
GONEXT(Otapl);
return code_p;
}
static yamop *
#ifdef YAPOR
a_either(op_numbers opcode, CELL opr, CELL lab, int nofalts, yamop *code_p,
int pass_no, struct intermediates *cip)
#else
a_either(op_numbers opcode, CELL opr, CELL lab, yamop *code_p, int pass_no,
struct intermediates *cip)
#endif /* YAPOR */
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->y_u.Osblp.s = emit_count(opr);
code_p->y_u.Osblp.l = emit_a(lab);
code_p->y_u.Osblp.p0 = cip->CurrentPred;
#ifdef YAPOR
INIT_YAMOP_LTT(code_p, nofalts);
if (cip->clause_has_cut)
PUT_YAMOP_CUT(code_p);
if (cip->CurrentPred->PredFlags & SequentialPredFlag)
PUT_YAMOP_SEQ(code_p);
if (opcode != _or_last) {
code_p->y_u.Osblp.bmap = emit_bmlabel(cip->cpc->arnds[1], cip);
}
#else
code_p->y_u.Osblp.bmap = emit_bmlabel(cip->cpc->arnds[1], cip);
#endif /* YAPOR */
}
GONEXT(Osblp);
return code_p;
}
static yamop *a_gl(op_numbers opcode, yamop *code_p, int pass_no,
struct PSEUDO *cpc, struct intermediates *cip USES_REGS) {
#ifdef YAPOR
return a_try(opcode, cpc->rnd1, LOCAL_IPredArity, cpc->rnd2 >> 1,
cpc->rnd2 & 1, code_p, pass_no, cip);
#else
return a_try(opcode, cpc->rnd1, LOCAL_IPredArity, code_p, pass_no, cip);
#endif /* YAPOR */
}
/*
* optimizes several unify_cons for the same constant. It must be avoided for
* the head of the first argument, because of indexing
*/
static yamop *a_ucons(int *do_not_optimise_uatomp, compiler_vm_op opcode,
yamop *code_p, int pass_no, struct intermediates *cip) {
#if AGGREGATE_OPS
PInstr *np = cip->cpc->nextInst;
register int i = 0;
CELL my_cons = cip->cpc->rnd1;
if (*do_not_optimise_uatomp) {
*do_not_optimise_uatomp = FALSE;
if (opcode == unify_atom_op)
return a_uc(cip->cpc->rnd1, _unify_atom, _unify_atom_write, code_p,
pass_no);
else
return a_c(cip->cpc->rnd1, _write_atom, code_p, pass_no);
} else {
while (np->op == opcode && np->rnd1 == my_cons) {
i++;
cip->cpc = np;
np = np->nextInst;
}
if (i == 0) {
if (opcode == unify_atom_op)
return a_uc(cip->cpc->rnd1, _unify_atom, _unify_atom_write, code_p,
pass_no);
else
return a_c(cip->cpc->rnd1, _write_atom, code_p, pass_no);
} else {
if (opcode == unify_atom_op)
return a_unc(cip->cpc->rnd1, _unify_n_atoms, _unify_n_atoms_write,
i + 1, code_p, pass_no);
else
return a_nc(cip->cpc->rnd1, _write_n_atoms, i + 1, code_p, pass_no);
}
}
#else
*do_not_optimise_uatomp = FALSE;
if (opcode == unify_atom_op)
return a_uc(cip->cpc->rnd1, _unify_atom, _unify_atom_write, code_p);
else
return a_c(cip->cpc->rnd1, _write_atom, code_p);
#endif
}
static yamop *a_uvar(yamop *code_p, int pass_no, struct intermediates *cip) {
if (!is_void_var()) {
#if AGGREGATE_OPS
if (is_temp_var()) {
PInstr *np = cip->cpc->nextInst;
if (np->op == unify_var_op && is_atemp_var(np)) {
return a_vv(_unify_x_var2, _unify_x_var2_write, code_p, pass_no, cip);
} else if (np->op == unify_last_var_op && is_atemp_var(np)) {
return a_vv(_unify_l_x_var2, _unify_l_x_var2_write, code_p, pass_no,
cip);
}
}
#endif /* AGGREGATE_OPS */
return a_uv((Ventry *)cip->cpc->rnd1, _unify_x_var, _unify_x_var_write,
_unify_y_var, _unify_y_var_write, code_p, pass_no);
} else {
#if AGGREGATE_OPS
int i = 1;
PInstr *np = cip->cpc->nextInst;
/* skip void vars */
while (np->op == unify_var_op && is_a_void(np->rnd1)) {
i++;
cip->cpc = np;
np = np->nextInst;
}
if (np->op == unify_last_var_op && is_a_void(np->rnd1)) {
if (i == 0)
code_p = a_ue(_unify_l_void, _unify_l_void_write, code_p, pass_no);
else
code_p = a_un(_unify_l_n_voids, _unify_l_n_voids_write, i + 1, code_p,
pass_no);
cip->cpc = np;
} else if (i == 1)
return a_ue(_unify_void, _unify_void_write, code_p, pass_no);
else {
return a_un(_unify_n_voids, _unify_n_voids_write, i, code_p, pass_no);
}
#else
return a_ue(_unify_void, _unify_void_write);
#endif
}
return code_p;
}
static yamop *a_wvar(yamop *code_p, int pass_no, struct intermediates *cip) {
if (!no_ref_var())
return a_v(_write_x_var, _write_y_var, code_p, pass_no, cip->cpc);
else {
#if AGGREGATE_OPS
int i = 0;
PInstr *np = cip->cpc->nextInst;
while (np->op == write_var_op && no_ref(np->rnd1)) {
i++;
cip->cpc = np;
np = np->nextInst;
}
if (i == 0)
return a_e(_write_void, code_p, pass_no);
else {
return a_n(_write_n_voids, i + 1, code_p, pass_no);
}
#else
return a_e(_write_void, pass_no);
#endif
}
}
static yamop *a_glist(int *do_not_optimise_uatomp, yamop *code_p, int pass_no,
struct intermediates *cip) {
#if AGGREGATE_OPS
PInstr *pnext = cip->cpc->nextInst;
if (cip->cpc->rnd2 != 1 && pnext->op == unify_val_op) {
Ventry *ve = (Ventry *)pnext->rnd1;
int is_y_var;
OPREG var_offset;
pnext->rnd2 = cip->cpc->rnd2;
cip->cpc = pnext;
is_y_var = (ve->KindOfVE == PermVar);
var_offset = Var_Ref(ve, is_y_var);
return a_rv(_glist_valx, _glist_valy, var_offset, code_p, pass_no,
cip->cpc);
} else if (cip->cpc->rnd2 == 1 && pnext->op == unify_atom_op) {
*do_not_optimise_uatomp = TRUE;
return a_r(cip->cpc->rnd2, _get_list, code_p, pass_no);
} else if (cip->cpc->rnd2 != 1 && pnext->op == unify_var_op &&
is_a_void(pnext->rnd1)) {
PInstr *ppnext = pnext->nextInst;
if (ppnext &&
(ppnext->op == unify_last_var_op || ppnext->op == unify_last_val_op)) {
Ventry *ve = (Ventry *)ppnext->rnd1;
int is_y_var = (ve->KindOfVE == PermVar);
OPREG var_offset;
ppnext->rnd2 = cip->cpc->rnd2;
cip->cpc = ppnext;
var_offset = Var_Ref(ve, is_y_var);
if (cip->cpc->op == unify_last_var_op)
return a_rv(_gl_void_varx, _gl_void_vary, var_offset, code_p, pass_no,
cip->cpc);
else
return a_rv(_gl_void_valx, _gl_void_valy, var_offset, code_p, pass_no,
cip->cpc);
} else {
return a_r(cip->cpc->rnd2, _get_list, code_p, pass_no);
}
} else
#endif /* AGGREGATE_OPS */
return a_r(cip->cpc->rnd2, _get_list, code_p, pass_no);
}
#define NEXTOPC (cip->cpc->nextInst->op)
static yamop *a_deallocate(clause_info *clinfo, yamop *code_p, int pass_no,
struct intermediates *cip) {
if (clinfo->alloc_found == 1) {
if (NEXTOPC == execute_op &&
!(RepPredProp((Prop)(cip->cpc->nextInst->rnd1))->PredFlags &
CPredFlag)) {
cip->cpc = cip->cpc->nextInst;
code_p = a_p(_dexecute, clinfo, code_p, pass_no, cip);
} else
code_p = a_p0(_deallocate, code_p, pass_no, cip->CurrentPred);
clinfo->dealloc_found = TRUE;
}
return code_p;
}
static yamop *a_bmap(yamop *code_p, int pass_no, struct PSEUDO *cpc) {
/* how much space do we need to reserve */
int i, max = (cpc->rnd1) / (8 * sizeof(CELL));
for (i = 0; i <= max; i++)
code_p = fill_a(cpc->arnds[i], code_p, pass_no);
return code_p;
}
static yamop *a_bregs(yamop *code_p, int pass_no, struct PSEUDO *cpc) {
/* how much space do we need to reserve */
int i, max = (cpc->rnd1) / (8 * sizeof(CELL));
code_p = fill_a(cpc->rnd1, code_p, pass_no);
for (i = 0; i <= max; i++)
code_p = fill_a(cpc->arnds[i], code_p, pass_no);
return code_p;
}
static yamop *copy_blob(yamop *code_p, int pass_no, struct PSEUDO *cpc) {
/* copy the blob to code space, making no effort to align if a double */
int max = cpc->rnd1, i;
for (i = 0; i < max; i++)
code_p = fill_a(cpc->arnds[i], code_p, pass_no);
return code_p;
}
static yamop *copy_string(yamop *code_p, int pass_no, struct PSEUDO *cpc) {
/* copy the blob to code space, making no effort to align if a double */
int max = cpc->rnd1, i;
for (i = 0; i < max; i++)
code_p = fill_a(cpc->arnds[i], code_p, pass_no);
return code_p;
}
static void a_fetch_vv(cmp_op_info *cmp_info, int pass_no,
struct intermediates *cip) {
/* the next three instructions must be a get_val, get_val, and BIP */
if (pass_no == 0) {
PInstr *p = cip->cpc->nextInst;
Ventry *ve;
ve = (Ventry *)p->rnd1;
if (ve->KindOfVE != PermVar && p->op != nop_op && p->op != put_var_op) {
p->rnd2 = ve->NoOfVE & MaskVarAdrs;
p->op = nop_op;
}
p = p->nextInst;
ve = (Ventry *)p->rnd1;
if (ve->KindOfVE != PermVar && p->op != nop_op && p->op != put_var_op) {
p->rnd2 = ve->NoOfVE & MaskVarAdrs;
p->op = nop_op;
}
} else {
PInstr *p = cip->cpc->nextInst;
cmp_info->c_type = TYPE_XX;
/* don't get rid of get_val_op */
cmp_info->x1_arg = emit_x(p->rnd2);
p = p->nextInst;
cmp_info->x2_arg = emit_x(p->rnd2);
}
}
static void a_fetch_vc(cmp_op_info *cmp_info, int pass_no,
struct intermediates *cip) {
/* the next two instructions must be a get_val and BIP */
if (pass_no == 0) {
PInstr *p = cip->cpc->nextInst;
Ventry *ve;
ve = (Ventry *)p->rnd1;
if (ve->KindOfVE != PermVar && p->op != nop_op && p->op != put_var_op) {
p->rnd2 = ve->NoOfVE & MaskVarAdrs;
p->op = nop_op;
}
} else {
PInstr *p = cip->cpc->nextInst;
cmp_info->c_type = TYPE_XC;
cmp_info->c_arg = cip->cpc->rnd1;
cmp_info->x1_arg = emit_x(p->rnd2);
}
}
static void a_fetch_cv(cmp_op_info *cmp_info, int pass_no,
struct intermediates *cip) {
/* the next two instructions must be a get_val and BIP */
if (pass_no == 0) {
PInstr *p = cip->cpc->nextInst;
Ventry *ve;
ve = (Ventry *)p->rnd1;
if (ve->KindOfVE != PermVar && p->op != nop_op && p->op != put_var_op) {
p->rnd2 = ve->NoOfVE & MaskVarAdrs;
p->op = nop_op;
}
} else {
PInstr *p = cip->cpc->nextInst;
cmp_info->c_type = TYPE_CX;
cmp_info->c_arg = cip->cpc->rnd1;
cmp_info->x1_arg = emit_x(p->rnd2);
}
}
static yamop *a_f2(cmp_op_info *cmp_info, yamop *code_p, int pass_no,
struct intermediates *cip) {
Int opc = cip->cpc->rnd2;
Ventry *ve = (Ventry *)(cip->cpc->rnd1);
int is_y_var = FALSE;
Int xpos = 0;
if (ve) {
is_y_var = (ve->KindOfVE == PermVar);
xpos = ve->NoOfVE & MaskVarAdrs;
}
if (opc <= _primitive) {
if (is_y_var) {
if (pass_no) {
code_p->y_u.yl.y = emit_y(ve);
switch (opc) {
case _atom:
code_p->opc = opcode(_p_atom_y);
break;
case _atomic:
code_p->opc = opcode(_p_atomic_y);
break;
case _compound:
code_p->opc = opcode(_p_compound_y);
break;
case _float:
code_p->opc = opcode(_p_float_y);
break;
case _integer:
code_p->opc = opcode(_p_integer_y);
break;
case _nonvar:
code_p->opc = opcode(_p_nonvar_y);
break;
case _number:
code_p->opc = opcode(_p_number_y);
break;
case _var:
code_p->opc = opcode(_p_var_y);
break;
case _db_ref:
code_p->opc = opcode(_p_db_ref_y);
break;
case _cut_by:
Yap_Error(SYSTEM_ERROR_COMPILER, TermNil,
"internal assembler error: cut_by should be handled as ->");
break;
case _primitive:
code_p->opc = opcode(_p_primitive_y);
break;
}
code_p->y_u.yl.F = emit_fail(cip);
}
GONEXT(yl);
return code_p;
} else {
if (pass_no) {
code_p->y_u.xl.x = emit_x(xpos);
switch (opc) {
case _atom:
code_p->opc = opcode(_p_atom_x);
break;
case _atomic:
code_p->opc = opcode(_p_atomic_x);
break;
case _compound:
code_p->opc = opcode(_p_compound_x);
break;
case _float:
code_p->opc = opcode(_p_float_x);
break;
case _integer:
code_p->opc = opcode(_p_integer_x);
break;
case _nonvar:
code_p->opc = opcode(_p_nonvar_x);
break;
case _number:
code_p->opc = opcode(_p_number_x);
break;
case _var:
code_p->opc = opcode(_p_var_x);
break;
case _db_ref:
code_p->opc = opcode(_p_db_ref_x);
break;
case _cut_by:
Yap_Error(SYSTEM_ERROR_COMPILER, TermNil,
"internal assembler error: cut_by should be handled as ->");
break;
case _primitive:
code_p->opc = opcode(_p_primitive_x);
break;
}
code_p->y_u.xl.F = emit_fail(cip);
}
GONEXT(xl);
return code_p;
}
}
if (opc == _functor && (cip->cpc->nextInst->op == f_var_op ||
cip->cpc->nextInst->op == f_0_op)) {
Ventry *nve;
int is_y_nvar = FALSE;
Int nxpos = 0;
cip->cpc = cip->cpc->nextInst;
nve = (Ventry *)(cip->cpc->rnd1);
if (nve) {
is_y_nvar = (nve->KindOfVE == PermVar);
nxpos = nve->NoOfVE & MaskVarAdrs;
}
if (is_y_var) {
if (is_y_nvar) {
if (pass_no) {
code_p->opc = emit_op(_p_func2f_yy);
code_p->y_u.yyx.y1 = emit_y(ve);
code_p->y_u.yyx.y2 = emit_y(nve);
code_p->y_u.yyx.x = cmp_info->x1_arg;
}
GONEXT(yyx);
return code_p;
} else {
if (pass_no) {
code_p->opc = emit_op(_p_func2f_yx);
code_p->y_u.yxx.y = emit_y(ve);
code_p->y_u.yxx.x1 = emit_x(nxpos);
code_p->y_u.yxx.x2 = cmp_info->x1_arg;
}
GONEXT(yxx);
return code_p;
}
} else {
if (is_y_nvar) {
if (pass_no) {
code_p->opc = emit_op(_p_func2f_xy);
code_p->y_u.xxy.x1 = emit_x(xpos);
code_p->y_u.xxy.y2 = emit_y(nve);
code_p->y_u.xxy.x = cmp_info->x1_arg;
}
GONEXT(xxy);
return code_p;
} else {
if (pass_no) {
code_p->opc = emit_op(_p_func2f_xx);
code_p->y_u.xxx.x1 = emit_x(xpos);
code_p->y_u.xxx.x2 = emit_x(nxpos);
code_p->y_u.xxx.x = cmp_info->x1_arg;
}
GONEXT(xxx);
return code_p;
}
}
}
if (is_y_var) {
switch (cmp_info->c_type) {
case TYPE_XX:
if (pass_no) {
switch (opc) {
case _plus:
code_p->opc = emit_op(_p_plus_y_vv);
break;
case _minus:
code_p->opc = emit_op(_p_minus_y_vv);
break;
case _times:
code_p->opc = emit_op(_p_times_y_vv);
break;
case _div:
code_p->opc = emit_op(_p_div_y_vv);
break;
case _and:
code_p->opc = emit_op(_p_and_y_vv);
break;
case _or:
code_p->opc = emit_op(_p_or_y_vv);
break;
case _sll:
code_p->opc = emit_op(_p_sll_y_vv);
break;
case _slr:
code_p->opc = emit_op(_p_slr_y_vv);
break;
case _arg:
code_p->opc = emit_op(_p_arg_y_vv);
break;
case _functor:
code_p->opc = emit_op(_p_func2s_y_vv);
break;
}
code_p->y_u.yxx.y = emit_y(ve);
code_p->y_u.yxx.x1 = cmp_info->x1_arg;
code_p->y_u.yxx.x2 = cmp_info->x2_arg;
}
GONEXT(yxx);
break;
case TYPE_CX:
if (pass_no) {
switch (opc) {
case _plus:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x1_arg,
"internal assembler error CX for +/2 (should be XC)");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _minus:
code_p->opc = emit_op(_p_minus_y_cv);
break;
case _times:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x1_arg,
"internal assembler error CX for */2 (should be XC)");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _div:
code_p->opc = emit_op(_p_div_y_cv);
break;
case _and:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x1_arg,
"internal assembler error CX for /\\/2 (should be XC)");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _or:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x1_arg,
"internal assembler error CX for \\//2 (should be XC)");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _sll:
code_p->opc = emit_op(_p_sll_y_cv);
break;
case _slr:
code_p->opc = emit_op(_p_slr_y_cv);
break;
case _arg:
code_p->opc = emit_op(_p_arg_y_cv);
break;
case _functor:
code_p->opc = emit_op(_p_func2s_y_cv);
break;
}
code_p->y_u.yxn.y = emit_y(ve);
code_p->y_u.yxn.c = cmp_info->c_arg;
code_p->y_u.yxn.xi = cmp_info->x1_arg;
}
GONEXT(yxn);
break;
case TYPE_XC:
if (pass_no) {
switch (opc) {
case _plus:
code_p->opc = emit_op(_p_plus_y_vc);
break;
case _minus:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x2_arg,
"internal assembler error XC for -/2");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _times:
code_p->opc = emit_op(_p_times_y_vc);
break;
case _div:
code_p->opc = emit_op(_p_div_y_vc);
break;
case _and:
code_p->opc = emit_op(_p_and_y_vc);
break;
case _or:
code_p->opc = emit_op(_p_or_y_vc);
break;
case _sll:
if ((Int)cmp_info->c_arg < 0) {
code_p->opc = emit_op(_p_slr_y_vc);
cmp_info->c_arg = -(Int)cmp_info->c_arg;
} else {
code_p->opc = emit_op(_p_sll_y_vc);
}
break;
case _slr:
if ((Int)cmp_info->c_arg < 0) {
code_p->opc = emit_op(_p_sll_y_vc);
cmp_info->c_arg = -(Int)cmp_info->c_arg;
} else {
code_p->opc = emit_op(_p_slr_y_vc);
}
break;
case _arg:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x2_arg,
"internal assembler error for arg/3");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _functor:
code_p->opc = emit_op(_p_func2s_y_vc);
break;
}
code_p->y_u.yxn.y = emit_y(ve);
code_p->y_u.yxn.c = cmp_info->c_arg;
code_p->y_u.yxn.xi = cmp_info->x1_arg;
}
GONEXT(yxn);
break;
}
} else {
switch (cmp_info->c_type) {
case TYPE_XX:
if (pass_no) {
switch (opc) {
case _plus:
code_p->opc = emit_op(_p_plus_vv);
break;
case _minus:
code_p->opc = emit_op(_p_minus_vv);
break;
case _times:
code_p->opc = emit_op(_p_times_vv);
break;
case _div:
code_p->opc = emit_op(_p_div_vv);
break;
case _and:
code_p->opc = emit_op(_p_and_vv);
break;
case _or:
code_p->opc = emit_op(_p_or_vv);
break;
case _sll:
code_p->opc = emit_op(_p_sll_vv);
break;
case _slr:
code_p->opc = emit_op(_p_slr_vv);
break;
case _arg:
code_p->opc = emit_op(_p_arg_vv);
break;
case _functor:
code_p->opc = emit_op(_p_func2s_vv);
break;
}
code_p->y_u.xxx.x = emit_x(xpos);
code_p->y_u.xxx.x1 = cmp_info->x1_arg;
code_p->y_u.xxx.x2 = cmp_info->x2_arg;
}
GONEXT(xxx);
break;
case TYPE_CX:
if (pass_no) {
switch (opc) {
case _plus:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x1_arg,
"internal assembler error CX for +/2");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _minus:
code_p->opc = emit_op(_p_minus_cv);
break;
case _times:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x1_arg,
"internal assembler error CX for */2");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _div:
code_p->opc = emit_op(_p_div_cv);
break;
case _and:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x1_arg,
"internal assembler error CX for /\\/2");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _or:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x1_arg,
"internal assembler error CX for \\//2");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _sll:
code_p->opc = emit_op(_p_sll_cv);
break;
case _slr:
code_p->opc = emit_op(_p_slr_cv);
break;
case _arg:
code_p->opc = emit_op(_p_arg_cv);
break;
case _functor:
code_p->opc = emit_op(_p_func2s_cv);
break;
}
code_p->y_u.xxn.x = emit_x(xpos);
code_p->y_u.xxn.c = cmp_info->c_arg;
code_p->y_u.xxn.xi = cmp_info->x1_arg;
}
GONEXT(xxn);
break;
case TYPE_XC:
if (pass_no) {
switch (opc) {
case _plus:
code_p->opc = emit_op(_p_plus_vc);
break;
case _minus:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x2_arg,
"internal assembler error XC for -/2");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _times:
code_p->opc = emit_op(_p_times_vc);
break;
case _div:
code_p->opc = emit_op(_p_div_vc);
break;
case _and:
code_p->opc = emit_op(_p_and_vc);
break;
case _or:
code_p->opc = emit_op(_p_or_vc);
break;
case _sll:
if ((Int)cmp_info->c_arg < 0) {
code_p->opc = emit_op(_p_slr_vc);
cmp_info->c_arg = -(Int)cmp_info->c_arg;
} else {
code_p->opc = emit_op(_p_sll_vc);
}
break;
case _slr:
if ((Int)cmp_info->c_arg < 0) {
code_p->opc = emit_op(_p_sll_vc);
cmp_info->c_arg = -(Int)cmp_info->c_arg;
} else {
code_p->opc = emit_op(_p_slr_vc);
}
break;
case _arg:
Yap_Error(SYSTEM_ERROR_COMPILER, cmp_info->x2_arg,
"internal assembler error for arg/3");
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
break;
case _functor:
code_p->opc = emit_op(_p_func2s_vc);
break;
}
code_p->y_u.xxn.x = emit_x(xpos);
code_p->y_u.xxn.c = cmp_info->c_arg;
code_p->y_u.xxn.xi = cmp_info->x1_arg;
}
GONEXT(xxn);
break;
}
}
return code_p;
}
static yamop *a_special_label(yamop *code_p, int pass_no,
struct intermediates *cip) {
special_label_op lab_op = cip->cpc->rnd1;
special_label_id lab_id = cip->cpc->rnd2;
UInt lab_val = cip->cpc->rnd3;
switch (lab_op) {
case SPECIAL_LABEL_INIT:
switch (lab_id) {
case SPECIAL_LABEL_EXCEPTION:
cip->exception_handler = lab_val;
break;
case SPECIAL_LABEL_SUCCESS:
cip->success_handler = lab_val;
break;
case SPECIAL_LABEL_FAILURE:
cip->failure_handler = lab_val;
break;
}
case SPECIAL_LABEL_SET:
break;
case SPECIAL_LABEL_CLEAR:
switch (lab_id) {
case SPECIAL_LABEL_EXCEPTION:
cip->exception_handler = 0;
break;
case SPECIAL_LABEL_SUCCESS:
cip->success_handler = 0;
break;
case SPECIAL_LABEL_FAILURE:
cip->failure_handler = 0;
break;
}
}
return code_p;
}
#ifdef YAPOR
#define TRYCODE(G, P) \
a_try((G), Unsigned(cip->code_addr) + cip->label_offset[cip->cpc->rnd1], \
LOCAL_IPredArity, cip->cpc->rnd2 >> 1, cip->cpc->rnd2 & 1, code_p, \
pass_no, cip)
#define TABLE_TRYCODE(G) \
a_try((G), (CELL)emit_ilabel(cip->cpc->rnd1, cip), LOCAL_IPredArity, \
cip->cpc->rnd2 >> 1, cip->cpc->rnd2 & 1, code_p, pass_no, cip)
#else
#define TRYCODE(G, P) \
a_try((G), Unsigned(cip->code_addr) + cip->label_offset[cip->cpc->rnd1], \
LOCAL_IPredArity, code_p, pass_no, cip)
#define TABLE_TRYCODE(G) \
a_try((G), (CELL)emit_ilabel(cip->cpc->rnd1, cip), LOCAL_IPredArity, code_p, \
pass_no, cip)
#endif /* YAPOR */
static yamop *do_pass(int pass_no, yamop **entry_codep, int assembling,
int *clause_has_blobsp, int *clause_has_dbtermp,
struct intermediates *cip, UInt size USES_REGS) {
#ifdef YAPOR
#define MAX_DISJ_BRANCHES 256
yamop *either_inst[MAX_DISJ_BRANCHES];
int either_cont = 0;
#endif /* YAPOR */
bool log_update;
bool dynamic;
bool tabled;
int ystop_found = FALSE;
union clause_obj *cl_u;
yamop *code_p;
cmp_op_info cmp_info;
clause_info clinfo;
int do_not_optimise_uatom;
code_p = cip->code_addr;
cl_u = (union clause_obj *)code_p;
cip->cpc = cip->CodeStart;
clinfo.alloc_found = 0;
clinfo.dealloc_found = FALSE;
clinfo.CurrentPred = cip->CurrentPred;
cip->current_try_lab = NULL;
cip->exception_handler = 0;
cip->success_handler = 0;
cip->failure_handler = 0;
cip->try_instructions = NULL;
cmp_info.c_type = TYPE_XX;
cmp_info.cl_info = &clinfo;
do_not_optimise_uatom = FALSE;
/* Space while for the clause flags */
log_update = cip->CurrentPred->PredFlags & LogUpdatePredFlag;
dynamic = cip->CurrentPred->PredFlags & DynamicPredFlag;
tabled = cip->CurrentPred->PredFlags & TabledPredFlag;
if (assembling == ASSEMBLING_CLAUSE) {
if (log_update) {
if (pass_no) {
cl_u->luc.Id = FunctorDBRef;
cl_u->luc.ClFlags = LogUpdMask;
if (cip->clause_has_cut)
cl_u->luc.ClFlags |= HasCutMask;
cl_u->luc.ClRefCount = 0;
cl_u->luc.ClPred = cip->CurrentPred;
/* Support for timestamps */
if (cip->CurrentPred->LastCallOfPred != LUCALL_ASSERT) {
if (cip->CurrentPred->TimeStampOfPred >= TIMESTAMP_RESET)
Yap_UpdateTimestamps(cip->CurrentPred);
++cip->CurrentPred->TimeStampOfPred;
/* fprintf(stderr,"+
* %x--%d--%ul\n",cip->CurrentPred,cip->CurrentPred->TimeStampOfPred,cip->CurrentPred->ArityOfPE);*/
cip->CurrentPred->LastCallOfPred = LUCALL_ASSERT;
}
cl_u->luc.ClTimeStart = cip->CurrentPred->TimeStampOfPred;
cl_u->luc.ClTimeEnd = TIMESTAMP_EOT;
if (*clause_has_blobsp) {
cl_u->luc.ClFlags |= HasBlobsMask;
}
if (*clause_has_dbtermp) {
cl_u->luc.ClFlags |= HasDBTMask;
}
cl_u->luc.ClExt = NULL;
cl_u->luc.ClPrev = cl_u->luc.ClNext = NULL;
#if MULTIPLE_STACKS
// INIT_LOCK(cl_u->luc.ClLock);
INIT_CLREF_COUNT(&(cl_u->luc));
#endif
}
code_p = cl_u->luc.ClCode;
} else if (dynamic) {
if (pass_no) {
cl_u->ic.ClFlags = DynamicMask;
if (*clause_has_blobsp) {
cl_u->ic.ClFlags |= HasBlobsMask;
}
if (*clause_has_dbtermp) {
cl_u->ic.ClFlags |= HasDBTMask;
}
cl_u->ic.ClSize = size;
cl_u->ic.ClRefCount = 0;
#if defined(YAPOR) || defined(THREADS)
INIT_LOCK(cl_u->ic.ClLock);
#endif
#ifdef MULTIPLE_STACKS
INIT_CLREF_COUNT(&(cl_u->ic));
#endif
}
code_p = cl_u->ic.ClCode;
} else {
/* static clause */
if (pass_no) {
cl_u->sc.ClFlags = StaticMask;
if (cip->clause_has_cut)
cl_u->sc.ClFlags |= HasCutMask;
cl_u->sc.ClNext = NULL;
cl_u->sc.ClSize = size;
cl_u->sc.usc.ClLine = Yap_source_line_no();
if (*clause_has_blobsp) {
cl_u->sc.ClFlags |= HasBlobsMask;
}
if (*clause_has_dbtermp) {
cl_u->sc.ClFlags |= HasDBTMask;
}
}
code_p = cl_u->sc.ClCode;
}
LOCAL_IPredArity = cip->CurrentPred->ArityOfPE; /* number of args */
*entry_codep = code_p;
if (tabled) {
#if TABLING
#ifdef YAPOR
code_p = a_try(_table_try_single, (CELL)NEXTOP(code_p, Otapl),
LOCAL_IPredArity, 1, 0, code_p, pass_no, cip);
#else
code_p = a_try(_table_try_single, (CELL)NEXTOP(code_p, Otapl),
LOCAL_IPredArity, code_p, pass_no, cip);
#endif
#endif
}
if (dynamic) {
#ifdef YAPOR
code_p = a_try(_try_me, 0, LOCAL_IPredArity, 1, 0, code_p, pass_no, cip);
#else
code_p = a_try(_try_me, 0, LOCAL_IPredArity, code_p, pass_no, cip);
#endif /* YAPOR */
}
#if THREADS || YAPOR
if (log_update) {
// separate from indexing code,
// clauses are protected by time-stamps
code_p = a_e(_unlock_lu, code_p, pass_no);
}
#endif
} else {
/* index code */
if (log_update) {
if (pass_no) {
cl_u->lui.ClFlags =
LogUpdMask | IndexedPredFlag | IndexMask | SwitchRootMask;
cl_u->lui.ChildIndex = NULL;
cl_u->lui.SiblingIndex = NULL;
cl_u->lui.PrevSiblingIndex = NULL;
cl_u->lui.ClPred = cip->CurrentPred;
cl_u->lui.ParentIndex = NULL;
cl_u->lui.ClSize = size;
cl_u->lui.ClRefCount = 0;
// INIT_LOCK(cl_u->lui.ClLock);
#if MULTIPLE_STACKS
INIT_CLREF_COUNT(&(cl_u->lui));
#endif
}
code_p = cl_u->lui.ClCode;
*entry_codep = code_p;
} else {
if (pass_no) {
cl_u->si.ClSize = size;
cl_u->si.ClFlags = IndexMask;
cl_u->si.ChildIndex = NULL;
cl_u->si.SiblingIndex = NULL;
cl_u->si.ClPred = cip->CurrentPred;
}
code_p = cl_u->si.ClCode;
*entry_codep = code_p;
}
}
while (cip->cpc) {
switch ((int)cip->cpc->op) {
#ifdef YAPOR
case sync_op:
code_p = a_try(_sync, cip->cpc->rnd1, cip->cpc->rnd2, 1, Zero, code_p,
pass_no, cip);
break;
#endif /* YAPOR */
#ifdef TABLING
case table_new_answer_op:
code_p = a_n(_table_new_answer, (int)cip->cpc->rnd2, code_p, pass_no);
break;
case table_try_single_op:
code_p =
a_gl(_table_try_single, code_p, pass_no, cip->cpc, cip PASS_REGS);
break;
#endif /* TABLING */
#ifdef TABLING_INNER_CUTS
case clause_with_cut_op:
code_p = a_e(_clause_with_cut, code_p, pass_no);
break;
#endif /* TABLING_INNER_CUTS */
#ifdef SFUNC
case get_s_f_op:
code_p = a_rf(_get_s_f, code_p, cip->cpc);
break;
case put_s_f_op:
code_p = a_rf(_put_s_f, code_p, cip->cpc);
break;
case unify_s_f_op:
code_p = a_d(_unify_s_f, code_p);
break;
case write_s_f_op:
code_p = a_f(cip->cpc->rnd1, _write_s_f);
break;
case unify_s_var_op:
code_p = a_vsf(_unify_s_xvar);
break;
case write_s_var_op:
code_p = a_vsf(_write_s_xvar);
break;
case unify_s_val_op:
code_p = a_vsf(_unify_s_xval);
break;
case write_s_val_op:
code_p = a_vsf(_write_s_xval);
break;
case unify_s_a_op:
code_p = a_asf(_unify_s_a);
break;
case write_s_a_op:
code_p = a_asf(_write_s_a);
break;
case get_s_end_op:
code_p = a_n(_get_s_end, Unsigned(0));
break;
case put_s_end_op:
code_p = a_n(_put_s_end, Unsigned(0));
break;
case unify_s_end_op:
code_p = a_n(_write_s_end, Unsigned(0));
break;
case write_s_end_op:
code_p = a_n(_write_s_end, Unsigned(0));
break;
#endif
case get_var_op:
code_p = a_vr(_get_x_var, _get_y_var, code_p, pass_no, cip);
break;
case put_var_op:
code_p = a_vr(_put_x_var, _put_y_var, code_p, pass_no, cip);
break;
case get_val_op:
code_p = a_vr(_get_x_val, _get_y_val, code_p, pass_no, cip);
break;
case put_val_op:
code_p = a_vr(_put_x_val, _put_y_val, code_p, pass_no, cip);
break;
case get_num_op:
case get_atom_op:
code_p = a_rc(_get_atom, code_p, pass_no, cip);
break;
case get_float_op:
*clause_has_blobsp = TRUE;
code_p = a_rd(_get_float, code_p, pass_no, cip->cpc);
break;
case label_ctl_op:
code_p = a_special_label(code_p, pass_no, cip);
break;
case get_longint_op:
*clause_has_blobsp = TRUE;
code_p = a_ri(_get_longint, code_p, pass_no, cip->cpc);
break;
case get_bigint_op:
code_p = a_rb(_get_bigint, clause_has_blobsp, code_p, pass_no, cip);
break;
case get_string_op:
code_p = a_rstring(_get_string, clause_has_blobsp, code_p, pass_no, cip);
break;
case get_dbterm_op:
code_p = a_dbt(_get_dbterm, clause_has_dbtermp, code_p, pass_no, cip);
break;
case put_num_op:
case put_atom_op:
code_p = a_rc(_put_atom, code_p, pass_no, cip);
break;
case put_float_op:
*clause_has_blobsp = TRUE;
code_p = a_rd(_put_float, code_p, pass_no, cip->cpc);
break;
case put_longint_op:
*clause_has_blobsp = TRUE;
code_p = a_ri(_put_longint, code_p, pass_no, cip->cpc);
break;
case put_bigint_op:
code_p = a_rb(_put_bigint, clause_has_blobsp, code_p, pass_no, cip);
break;
case put_string_op:
code_p = a_rstring(_put_bigint, clause_has_blobsp, code_p, pass_no, cip);
break;
case put_dbterm_op:
code_p = a_dbt(_put_dbterm, clause_has_dbtermp, code_p, pass_no, cip);
break;
case get_list_op:
code_p = a_glist(&do_not_optimise_uatom, code_p, pass_no, cip);
break;
case put_list_op:
code_p = a_r(cip->cpc->rnd2, _put_list, code_p, pass_no);
break;
case get_struct_op:
code_p = a_rf(_get_struct, code_p, pass_no, cip->cpc);
break;
case put_struct_op:
code_p = a_rf(_put_struct, code_p, pass_no, cip->cpc);
break;
case put_unsafe_op:
code_p = a_vr(_put_unsafe, _put_unsafe, code_p, pass_no, cip);
break;
case unify_var_op:
code_p = a_uvar(code_p, pass_no, cip);
break;
case unify_last_var_op:
code_p =
a_uv((Ventry *)cip->cpc->rnd1, _unify_l_x_var, _unify_l_x_var_write,
_unify_l_y_var, _unify_l_y_var_write, code_p, pass_no);
break;
case write_var_op:
code_p = a_wvar(code_p, pass_no, cip);
break;
case unify_local_op:
code_p = a_uv((Ventry *)cip->cpc->rnd1, _unify_x_loc, _unify_x_loc_write,
_unify_y_loc, _unify_y_loc_write, code_p, pass_no);
break;
case unify_val_op:
code_p = a_uv((Ventry *)cip->cpc->rnd1, _unify_x_val, _unify_x_val_write,
_unify_y_val, _unify_y_val_write, code_p, pass_no);
break;
case unify_last_local_op:
code_p =
a_uv((Ventry *)cip->cpc->rnd1, _unify_l_x_loc, _unify_l_x_loc_write,
_unify_l_y_loc, _unify_l_y_loc_write, code_p, pass_no);
break;
case unify_last_val_op:
code_p =
a_uv((Ventry *)cip->cpc->rnd1, _unify_l_x_val, _unify_l_x_val_write,
_unify_l_y_val, _unify_l_y_val_write, code_p, pass_no);
break;
case write_local_op:
code_p = a_v(_write_x_loc, _write_y_loc, code_p, pass_no, cip->cpc);
break;
case write_val_op:
code_p = a_v(_write_x_val, _write_y_val, code_p, pass_no, cip->cpc);
break;
case unify_num_op:
case unify_atom_op:
code_p =
a_ucons(&do_not_optimise_uatom, unify_atom_op, code_p, pass_no, cip);
break;
case unify_float_op:
*clause_has_blobsp = TRUE;
code_p =
a_ud(_unify_float, _unify_float_write, code_p, pass_no, cip->cpc);
break;
case unify_longint_op:
*clause_has_blobsp = TRUE;
code_p =
a_ui(_unify_longint, _unify_longint_write, code_p, pass_no, cip->cpc);
break;
case unify_bigint_op:
code_p = a_ublob(cip->cpc->rnd1, _unify_bigint, _unify_atom_write,
clause_has_blobsp, code_p, pass_no, cip);
break;
case unify_string_op:
code_p = a_ustring(cip->cpc->rnd1, _unify_string, _unify_atom_write,
clause_has_blobsp, code_p, pass_no, cip);
break;
case unify_dbterm_op:
code_p = a_udbt(cip->cpc->rnd1, _unify_dbterm, _unify_atom_write,
clause_has_dbtermp, code_p, pass_no, cip);
break;
case unify_last_num_op:
case unify_last_atom_op:
code_p = a_uc(cip->cpc->rnd1, _unify_l_atom, _unify_l_atom_write, code_p,
pass_no);
break;
case unify_last_float_op:
*clause_has_blobsp = TRUE;
code_p =
a_ud(_unify_l_float, _unify_l_float_write, code_p, pass_no, cip->cpc);
break;
case unify_last_longint_op:
*clause_has_blobsp = TRUE;
code_p = a_ui(_unify_l_longint, _unify_l_longint_write, code_p, pass_no,
cip->cpc);
break;
case unify_last_bigint_op:
code_p = a_ublob(cip->cpc->rnd1, _unify_l_bigint, _unify_l_atom_write,
clause_has_blobsp, code_p, pass_no, cip);
break;
case unify_last_string_op:
code_p = a_ustring(cip->cpc->rnd1, _unify_l_bigint, _unify_l_atom_write,
clause_has_blobsp, code_p, pass_no, cip);
break;
case unify_last_dbterm_op:
code_p = a_udbt(cip->cpc->rnd1, _unify_l_dbterm, _unify_l_atom_write,
clause_has_dbtermp, code_p, pass_no, cip);
break;
case write_num_op:
case write_atom_op:
code_p =
a_ucons(&do_not_optimise_uatom, write_atom_op, code_p, pass_no, cip);
break;
case write_float_op:
*clause_has_blobsp = TRUE;
code_p = a_wd(_write_float, code_p, pass_no, cip->cpc);
break;
case write_longint_op:
*clause_has_blobsp = TRUE;
code_p = a_wi(_write_longint, code_p, pass_no, cip->cpc);
break;
case write_bigint_op:
code_p = a_wblob(cip->cpc->rnd1, _write_bigint, clause_has_blobsp, code_p,
pass_no, cip);
break;
case write_string_op:
code_p = a_wblob(cip->cpc->rnd1, _write_bigint, clause_has_blobsp, code_p,
pass_no, cip);
break;
case write_dbterm_op:
code_p = a_wdbt(cip->cpc->rnd1, _write_dbterm, clause_has_dbtermp, code_p,
pass_no, cip);
break;
case unify_list_op:
code_p = a_ue(_unify_list, _unify_list_write, code_p, pass_no);
break;
case unify_last_list_op:
code_p = a_ue(_unify_l_list, _unify_l_list_write, code_p, pass_no);
break;
case write_list_op:
code_p = a_e(_write_list, code_p, pass_no);
break;
case write_last_list_op:
code_p = a_e(_write_l_list, code_p, pass_no);
break;
case unify_struct_op:
code_p = a_uf(cip->cpc->rnd1, _unify_struct, _unify_struct_write, code_p,
pass_no);
break;
case unify_last_struct_op:
code_p = a_uf(cip->cpc->rnd1, _unify_l_struc, _unify_l_struc_write,
code_p, pass_no);
break;
case write_struct_op:
code_p = a_f(cip->cpc->rnd1, _write_struct, code_p, pass_no);
break;
case write_last_struct_op:
code_p = a_f(cip->cpc->rnd1, _write_l_struc, code_p, pass_no);
break;
case save_b_op:
case patch_b_op:
code_p = a_v(_save_b_x, _save_b_y, code_p, pass_no, cip->cpc);
break;
case commit_b_op:
cip->clause_has_cut = TRUE;
code_p =
a_vp(_commit_b_x, _commit_b_y, code_p, pass_no, cip->cpc, &clinfo);
break;
case save_pair_op:
code_p = a_uv((Ventry *)cip->cpc->rnd1, _save_pair_x, _save_pair_x_write,
_save_pair_y, _save_pair_y_write, code_p, pass_no);
break;
case save_appl_op:
code_p = a_uv((Ventry *)cip->cpc->rnd1, _save_appl_x, _save_appl_x_write,
_save_appl_y, _save_appl_y_write, code_p, pass_no);
break;
case fail_op:
code_p = a_e(_op_fail, code_p, pass_no);
code_p = a_pl(_procceed, cip->CurrentPred, code_p, pass_no);
break;
case cut_op:
code_p = a_cut(&clinfo, code_p, pass_no, cip);
break;
case cutexit_op:
cip->clause_has_cut = TRUE;
if (cip->CurrentPred->PredFlags & LogUpdatePredFlag &&
(*clause_has_blobsp || *clause_has_dbtermp) && !clinfo.alloc_found)
code_p = a_cle(_alloc_for_logical_pred, code_p, pass_no, cip);
code_p = a_cut(&clinfo, code_p, pass_no, cip);
break;
case allocate_op:
clinfo.alloc_found = 2;
break;
case deallocate_op:
code_p = a_deallocate(&clinfo, code_p, pass_no, cip);
break;
case tryme_op:
#ifdef TABLING
if (tabled)
code_p = TABLE_TRYCODE(_table_try_me);
else
#endif
code_p = TRYCODE(_try_me, _try_me0);
break;
case retryme_op:
#ifdef TABLING
if (tabled)
code_p = TABLE_TRYCODE(_table_retry_me);
else
#endif
code_p = TRYCODE(_retry_me, _retry_me0);
break;
case trustme_op:
#ifdef TABLING
if (tabled)
code_p = TABLE_TRYCODE(_table_trust_me);
else
#endif
code_p = TRYCODE(_trust_me, _trust_me0);
break;
case enter_lu_op:
code_p = a_lucl(_enter_lu_pred, code_p, pass_no, cip, &clinfo);
break;
case try_op:
if (log_update) {
add_clref(cip->cpc->rnd1, pass_no);
}
#ifdef TABLING
if (tabled)
code_p = a_gl(_table_try, code_p, pass_no, cip->cpc, cip PASS_REGS);
else
#endif
code_p = a_gl(_try_clause, code_p, pass_no, cip->cpc, cip PASS_REGS);
break;
case retry_op:
if (log_update) {
add_clref(cip->cpc->rnd1, pass_no);
}
#ifdef TABLING
if (tabled)
code_p = a_gl(_table_retry, code_p, pass_no, cip->cpc, cip PASS_REGS);
else
#endif
code_p = a_gl(_retry, code_p, pass_no, cip->cpc, cip PASS_REGS);
break;
case trust_op:
if (log_update) {
add_clref(cip->cpc->rnd1, pass_no);
}
#ifdef TABLING
if (tabled)
code_p = a_gl(_table_trust, code_p, pass_no, cip->cpc, cip PASS_REGS);
else
#endif
code_p = a_gl(_trust, code_p, pass_no, cip->cpc, cip PASS_REGS);
break;
case try_in_op:
code_p = a_il(cip->cpc->rnd1, _try_in, code_p, pass_no, cip);
break;
case jump_op:
/* don't assemble jumps to next instruction */
if (cip->cpc->nextInst == NULL || cip->cpc->nextInst->op != label_op ||
cip->cpc->rnd1 != cip->cpc->nextInst->rnd1) {
code_p = a_l(cip->cpc->rnd1, _jump, code_p, pass_no, cip);
}
break;
case jumpi_op:
code_p = a_il(cip->cpc->rnd1, _jump, code_p, pass_no, cip);
break;
case restore_tmps_op:
code_p = a_l(cip->cpc->rnd1, _move_back, code_p, pass_no, cip);
break;
case restore_tmps_and_skip_op:
code_p = a_l(cip->cpc->rnd1, _skip, code_p, pass_no, cip);
break;
case procceed_op:
if (cip->CurrentPred->PredFlags & LogUpdatePredFlag &&
(*clause_has_blobsp || *clause_has_dbtermp) && !clinfo.alloc_found)
code_p = a_cle(_alloc_for_logical_pred, code_p, pass_no, cip);
code_p = a_pl(_procceed, cip->CurrentPred, code_p, pass_no);
break;
case call_op:
code_p = a_p(_call, &clinfo, code_p, pass_no, cip);
break;
case execute_op:
code_p = a_p(_execute, &clinfo, code_p, pass_no, cip);
break;
case safe_call_op:
code_p = a_p(_call, &clinfo, code_p, pass_no, cip);
break;
case label_op:
if (!ystop_found && cip->cpc->nextInst != NULL &&
(cip->cpc->nextInst->op == mark_initialized_pvars_op ||
cip->cpc->nextInst->op == mark_live_regs_op ||
cip->cpc->nextInst->op == blob_op ||
cip->cpc->nextInst->op == string_op)) {
ystop_found = TRUE;
code_p = a_il((CELL)*entry_codep, _Ystop, code_p, pass_no, cip);
}
if (!pass_no) {
#if !USE_SYSTEM_MALLOC
if (CellPtr(cip->label_offset + cip->cpc->rnd1) > ASP - 256) {
LOCAL_Error_Size =
256 + ((char *)(cip->label_offset + cip->cpc->rnd1) - (char *)HR);
save_machine_regs();
siglongjmp(cip->CompilerBotch, 3);
}
if ((char *)(cip->label_offset + cip->cpc->rnd1) >= cip->freep)
cip->freep = (char *)(cip->label_offset + (cip->cpc->rnd1 + 1));
#endif
cip->label_offset[cip->cpc->rnd1] = (CELL)code_p;
}
/* reset dealloc_found in case there was a branch */
clinfo.dealloc_found = FALSE;
break;
case ensure_space_op:
code_p = a_ensure_space(_ensure_space, code_p, pass_no, cip, &clinfo);
break;
case pop_op:
if (cip->cpc->rnd1 == 1)
code_p = a_e(_pop, code_p, pass_no);
else {
code_p =
a_n(_pop_n, 2 * CELLSIZE * (cip->cpc->rnd1 - 1), code_p, pass_no);
}
break;
case either_op:
code_p = check_alloc(&clinfo, code_p, pass_no, cip);
#ifdef YAPOR
if (pass_no)
either_inst[either_cont++] = code_p;
if (either_cont == MAX_DISJ_BRANCHES) {
Yap_Error(SYSTEM_ERROR_FATAL, TermNil,
"Too Many Branches in disjunction: please increase "
"MAX_DISJ_BRANCHES in amasm.c\n");
exit(1);
}
code_p =
a_either(_either, -Signed(RealEnvSize) - CELLSIZE * cip->cpc->rnd2,
Unsigned(cip->code_addr) + cip->label_offset[cip->cpc->rnd1],
0, code_p, pass_no, cip);
#else
code_p =
a_either(_either, -Signed(RealEnvSize) - CELLSIZE * cip->cpc->rnd2,
Unsigned(cip->code_addr) + cip->label_offset[cip->cpc->rnd1],
code_p, pass_no, cip);
#endif /* YAPOR */
break;
case orelse_op:
#ifdef YAPOR
if (pass_no)
either_inst[either_cont++] = code_p;
code_p =
a_either(_or_else, -Signed(RealEnvSize) - CELLSIZE * cip->cpc->rnd2,
Unsigned(cip->code_addr) + cip->label_offset[cip->cpc->rnd1],
0, code_p, pass_no, cip);
#else
code_p =
a_either(_or_else, -Signed(RealEnvSize) - CELLSIZE * cip->cpc->rnd2,
Unsigned(cip->code_addr) + cip->label_offset[cip->cpc->rnd1],
code_p, pass_no, cip);
#endif /* YAPOR */
clinfo.dealloc_found = FALSE;
break;
case orlast_op:
#ifdef YAPOR
if (pass_no)
either_inst[either_cont++] = code_p;
code_p = a_either(_or_last, 0, 0, 0, code_p, pass_no, cip);
if (pass_no) {
int cont = 1;
do {
either_cont--;
PUT_YAMOP_LTT(either_inst[either_cont], cont++);
} while (either_inst[either_cont]->opc != opcode(_either));
}
#else
code_p = a_pl(_or_last, cip->CurrentPred, code_p, pass_no);
#endif /* YAPOR */
clinfo.dealloc_found = FALSE;
break;
case cache_arg_op:
code_p = a_4sw_x(_switch_on_arg_type, code_p, pass_no, cip);
break;
case cache_sub_arg_op:
code_p = a_4sw_s(_switch_on_sub_arg_type, code_p, pass_no, cip);
break;
case jump_v_op:
code_p = a_igl(cip->cpc->rnd1, _jump_if_var, code_p, pass_no, cip);
break;
case jump_nv_op:
code_p = a_xigl(_jump_if_nonvar, code_p, pass_no, cip->cpc);
break;
case user_switch_op:
code_p = a_lp(_user_switch, code_p, pass_no, cip);
break;
case switch_on_type_op:
code_p = a_4sw(_switch_on_type, code_p, pass_no, cip);
break;
case switch_c_op:
code_p = a_hx(_switch_on_cons, cl_u, log_update, code_p, pass_no, cip);
break;
case switch_f_op:
code_p = a_hx(_switch_on_func, cl_u, log_update, code_p, pass_no, cip);
break;
case if_c_op:
if (cip->cpc->rnd1 == 1) {
code_p = a_if(_go_on_cons, cl_u, log_update, code_p, pass_no, cip);
} else {
code_p = a_if(_if_cons, cl_u, log_update, code_p, pass_no, cip);
}
break;
case if_f_op:
if (cip->cpc->rnd1 == 1) {
code_p = a_if(_go_on_func, cl_u, log_update, code_p, pass_no, cip);
} else {
code_p = a_if(_if_func, cl_u, log_update, code_p, pass_no, cip);
}
break;
case if_not_op:
code_p = a_ifnot(_if_not_then, code_p, pass_no, cip);
break;
case index_dbref_op:
code_p = a_e(_index_dbref, code_p, pass_no);
break;
case index_blob_op:
code_p = a_e(_index_blob, code_p, pass_no);
break;
case index_long_op:
code_p = a_e(_index_long, code_p, pass_no);
break;
case mark_initialized_pvars_op:
if (!ystop_found) {
code_p = a_il((CELL)*entry_codep, _Ystop, code_p, pass_no, cip);
ystop_found = TRUE;
}
code_p = a_bmap(code_p, pass_no, cip->cpc);
break;
case mark_live_regs_op:
if (!ystop_found) {
code_p = a_il((CELL)*entry_codep, _Ystop, code_p, pass_no, cip);
printf("-> %p\n", code_p->y_u.l.l);
ystop_found = TRUE;
}
code_p = a_bregs(code_p, pass_no, cip->cpc);
break;
case fetch_args_vv_op:
a_fetch_vv(&cmp_info, pass_no, cip);
break;
case fetch_args_vc_op:
case fetch_args_vi_op:
a_fetch_vc(&cmp_info, pass_no, cip);
break;
case fetch_args_cv_op:
case fetch_args_iv_op:
a_fetch_cv(&cmp_info, pass_no, cip);
break;
case f_val_op:
code_p = a_f2(&cmp_info, code_p, pass_no, cip);
break;
case f_var_op:
code_p = a_f2(&cmp_info, code_p, pass_no, cip);
break;
case f_0_op:
code_p = a_f2(&cmp_info, code_p, pass_no, cip);
break;
case enter_profiling_op: {
PredEntry *pe = (PredEntry *)(cip->cpc->rnd1);
if ((pe->PredFlags & (CPredFlag | UserCPredFlag | AsmPredFlag)) ||
!pe->ModuleOfPred) {
code_p = a_pl(_enter_profiling, pe, code_p, pass_no);
Yap_initProfiler(pe);
}
} break;
case retry_profiled_op:
if (!Yap_initProfiler(cip->CurrentPred)) {
return NULL;
}
code_p =
a_pl(_retry_profiled, (PredEntry *)(cip->cpc->rnd1), code_p, pass_no);
break;
case count_call_op: {
PredEntry *pe = (PredEntry *)(cip->cpc->rnd1);
if ((pe->PredFlags & (CPredFlag | UserCPredFlag | AsmPredFlag)) ||
!pe->ModuleOfPred) {
code_p =
a_pl(_count_call, (PredEntry *)(cip->cpc->rnd1), code_p, pass_no);
}
} break;
case count_retry_op:
code_p =
a_pl(_count_retry, (PredEntry *)(cip->cpc->rnd1), code_p, pass_no);
break;
case bccall_op:
code_p =
a_bfunc(cip->cpc->rnd1, cip->cpc->rnd3, (PredEntry *)(cip->cpc->rnd5),
&clinfo, code_p, pass_no, cip);
break;
case align_float_op:
/* install a blob */
#if SIZEOF_DOUBLE == 2 * SIZEOF_INT_P
if (!((CELL)code_p & 0x4))
GONEXT(e);
#endif
break;
case blob_op:
/* install a blob */
code_p = copy_blob(code_p, pass_no, cip->cpc);
break;
case string_op:
/* install a blob */
code_p = copy_string(code_p, pass_no, cip->cpc);
break;
case empty_call_op:
/* create an empty call */
code_p = a_empty_call(&clinfo, code_p, pass_no, cip);
break;
case push_or_op:
/* be sure to allocate if we have an ;, even if it is
compiled inline.
*/
code_p = check_alloc(&clinfo, code_p, pass_no, cip);
case pushpop_or_op:
case pop_or_op:
case nop_op:
case name_op:
break;
#ifdef BEAM
case body_op:
case endgoal_op:
break;
case run_op:
code_p = a_eam(_run_eam, cip->cpc->rnd2,
(long)((PredEntry *)cip->cpc->rnd2)->beamTable->last,
code_p, pass_no);
break;
#endif
default:
Yap_Error(SYSTEM_ERROR_COMPILER, TermNil,
"instruction %d found while assembling", (int)cip->cpc->op);
save_machine_regs();
siglongjmp(cip->CompilerBotch, 1);
}
cip->cpc = cip->cpc->nextInst;
}
if (!ystop_found)
code_p = a_il((CELL)*entry_codep, _Ystop, code_p, pass_no, cip);
return code_p;
}
static DBTerm *fetch_clause_space(Term *tp, UInt size,
struct intermediates *cip,
UInt *osizep USES_REGS) {
CELL *h0 = HR;
DBTerm *x;
/* This stuff should be just about fetching the space from the data-base,
unfortunately we have to do all sorts of error handling :-( */
HR = (CELL *)cip->freep;
while ((x = Yap_StoreTermInDBPlusExtraSpace(*tp, size, osizep)) == NULL) {
HR = h0;
switch (LOCAL_Error_TYPE) {
case RESOURCE_ERROR_STACK:
LOCAL_Error_Size = 256 + ((char *)cip->freep - (char *)HR);
save_machine_regs();
siglongjmp(cip->CompilerBotch, 3);
case RESOURCE_ERROR_TRAIL:
/* don't just return NULL */
ARG1 = *tp;
if (!Yap_growtrail(K64, FALSE)) {
return NULL;
}
LOCAL_Error_TYPE = YAP_NO_ERROR;
*tp = ARG1;
break;
case RESOURCE_ERROR_AUXILIARY_STACK:
ARG1 = *tp;
if (!Yap_ExpandPreAllocCodeSpace(LOCAL_Error_Size, (void *)cip, TRUE)) {
return NULL;
}
LOCAL_Error_TYPE = YAP_NO_ERROR;
*tp = ARG1;
break;
case RESOURCE_ERROR_HEAP:
/* don't just return NULL */
ARG1 = *tp;
if (!Yap_growheap(TRUE, size, cip)) {
return NULL;
}
LOCAL_Error_TYPE = YAP_NO_ERROR;
*tp = ARG1;
break;
default:
return NULL;
}
h0 = HR;
HR = (CELL *)cip->freep;
}
HR = h0;
return x;
}
static DBTermList *init_dbterms_list(yamop *code_p, PredEntry *ap) {
DBTermList *new;
if ((new = (DBTermList *)Yap_AllocCodeSpace(sizeof(DBTermList))) == NULL) {
return NULL;
}
new->dbterms = NULL;
new->clause_code = code_p;
new->p = ap;
LOCK(DBTermsListLock);
new->next_dbl = DBTermsList;
DBTermsList = new;
UNLOCK(DBTermsListLock);
return new;
}
#define DEFAULT_NLABELS 4096
yamop *Yap_assemble(int mode, Term t, PredEntry *ap, int is_fact,
struct intermediates *cip, UInt max_label) {
CACHE_REGS
/*
* the assembly proccess is done in two passes: 1 - a first pass
* computes labels offsets and total code size 2 - the second pass
* produces the final version of the code
*/
UInt size = 0;
yamop *entry_code;
yamop *code_p;
int clause_has_blobs = FALSE;
int clause_has_dbterm = FALSE;
#if USE_SYSTEM_MALLOC
if (!cip->label_offset) {
if (!LOCAL_LabelFirstArray && max_label <= DEFAULT_NLABELS) {
LOCAL_LabelFirstArray =
(Int *)Yap_AllocCodeSpace(sizeof(Int) * DEFAULT_NLABELS);
LOCAL_LabelFirstArraySz = DEFAULT_NLABELS;
if (!LOCAL_LabelFirstArray) {
save_machine_regs();
siglongjmp(cip->CompilerBotch, OUT_OF_HEAP_BOTCH);
}
}
if (LOCAL_LabelFirstArray && max_label <= LOCAL_LabelFirstArraySz) {
cip->label_offset = LOCAL_LabelFirstArray;
} else {
cip->label_offset = (Int *)Yap_AllocCodeSpace(sizeof(Int) * max_label);
if (!cip->label_offset) {
save_machine_regs();
siglongjmp(cip->CompilerBotch, OUT_OF_HEAP_BOTCH);
}
}
}
#else
cip->label_offset = (Int *)cip->freep;
#endif
cip->clause_has_cut = FALSE;
cip->code_addr = NULL;
code_p = do_pass(0, &entry_code, mode, &clause_has_blobs, &clause_has_dbterm,
cip, size PASS_REGS);
if (clause_has_dbterm) {
cip->dbterml = init_dbterms_list(code_p, ap);
}
if (ap->PredFlags & DynamicPredFlag) {
size = (CELL)NEXTOP(
NEXTOP(NEXTOP((yamop *)(((DynamicClause *)NULL)->ClCode), Otapl),
Osbpp),
e);
}
if ((CELL)code_p > size)
size = (CELL)code_p;
if (mode == ASSEMBLING_CLAUSE && ap->PredFlags & LogUpdatePredFlag &&
!is_fact) {
DBTerm *x;
LogUpdClause *cl;
UInt osize;
if (!(x = fetch_clause_space(&t, size, cip, &osize PASS_REGS))) {
return NULL;
}
cl = (LogUpdClause *)((CODEADDR)x - (UInt)size);
cl->lusl.ClSource = x;
cl->ClFlags |= SrcMask;
x->ag.line_number = Yap_source_line_no();
cl->ClSize = osize;
cip->code_addr = (yamop *)cl;
} else if (mode == ASSEMBLING_CLAUSE &&
(ap->PredFlags & (SourcePredFlag | MultiFileFlag) ||
trueGlobalPrologFlag(SOURCE_FLAG)) &&
!is_fact) {
DBTerm *x;
StaticClause *cl;
UInt osize;
if (!(x = fetch_clause_space(&t, size, cip, &osize PASS_REGS))) {
return NULL;
}
cl = (StaticClause *)((CODEADDR)x - (UInt)size);
cip->code_addr = (yamop *)cl;
code_p = do_pass(1, &entry_code, mode, &clause_has_blobs,
&clause_has_dbterm, cip, size PASS_REGS);
/* make sure we copy after second pass */
cl->usc.ClSource = x;
cl->ClFlags |= SrcMask;
x->ag.line_number = Yap_source_line_no();
cl->ClSize = osize;
LOCAL_ProfEnd = code_p;
Yap_inform_profiler_of_clause(cl, LOCAL_ProfEnd, ap, GPROF_CLAUSE);
return entry_code;
} else {
while ((cip->code_addr = (yamop *)Yap_AllocCodeSpace(size)) == NULL) {
if (!Yap_growheap(TRUE, size, cip)) {
LOCAL_Error_TYPE = RESOURCE_ERROR_HEAP;
LOCAL_Error_Size = size;
return NULL;
}
}
Yap_inform_profiler_of_clause(
cip->code_addr, (char *)(cip->code_addr) + size, ap,
(mode == ASSEMBLING_INDEX ? GPROF_INDEX : GPROF_CLAUSE));
if (mode == ASSEMBLING_CLAUSE) {
if (ap->PredFlags & LogUpdatePredFlag) {
((LogUpdClause *)(cip->code_addr))->ClSize = size;
Yap_LUClauseSpace += size;
} else {
StaticClause *cl = ((StaticClause *)(cip->code_addr));
cl->usc.ClSource = NULL;
cl->ClSize = size;
cl->ClFlags = 0;
Yap_ClauseSpace += size;
}
} else {
if (ap->PredFlags & LogUpdatePredFlag) {
Yap_LUIndexSpace_Tree += size;
} else
Yap_IndexSpace_Tree += size;
}
}
do_pass(1, &entry_code, mode, &clause_has_blobs, &clause_has_dbterm, cip,
size PASS_REGS);
return entry_code;
}
void Yap_InitComma(void) {
yamop *code_p = COMMA_CODE;
code_p->opc = opcode(_call);
code_p->y_u.Osbpp.s = emit_count(-Signed(RealEnvSize) - sizeof(CELL) * 3);
code_p->y_u.Osbpp.p = code_p->y_u.Osbpp.p0 =
RepPredProp(PredPropByFunc(FunctorComma, 0));
code_p->y_u.Osbpp.bmap = NULL;
GONEXT(Osbpp);
code_p->opc = opcode(_p_execute_tail);
code_p->y_u.Osbmp.s = emit_count(-Signed(RealEnvSize) - 3 * sizeof(CELL));
code_p->y_u.Osbmp.bmap = NULL;
code_p->y_u.Osbmp.mod = MkAtomTerm(AtomUser);
code_p->y_u.Osbmp.p0 = RepPredProp(PredPropByFunc(FunctorComma, 0));
GONEXT(Osbmp);
code_p->opc = emit_op(_deallocate);
code_p->y_u.p.p = PredMetaCall;
GONEXT(p);
code_p->opc = emit_op(_procceed);
code_p->y_u.p.p = PredMetaCall;
GONEXT(p);
}
yamop *Yap_InitCommaContinuation(PredEntry *pe) {
arity_t arity = pe->ArityOfPE, i;
yamop *code_p = NULL;
GONEXT(Osbmp);
for (i = 0; i < arity; i++)
GONEXT(yx);
GONEXT(Osbmp);
pe->MetaEntryOfPred = code_p =
Yap_AllocCodeSpace((size_t)code_p);
code_p->opc = opcode(_call);
code_p->y_u.Osbpp.s = emit_count(-Signed(RealEnvSize) - sizeof(CELL) * pe->ArityOfPE);
code_p->y_u.Osbpp.p =
code_p->y_u.Osbpp.p0 = PredMetaCall;
code_p->y_u.Osbpp.bmap = NULL;
GONEXT(Osbmp);
for (i = 0; i < arity; i++) {
code_p->opc = opcode(_put_y_var);
code_p->y_u.yx.y = -i - Signed(RealEnvSize) / sizeof(CELL);
code_p->y_u.yx.x = emit_xreg(i + 1);
GONEXT(yx);
}
code_p->opc = opcode(_dexecute);
code_p->y_u.Osbpp.p0 = PredMetaCall;
code_p->y_u.Osbpp.p = pe;
GONEXT(Osbpp);
return pe->MetaEntryOfPred;
}
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