/************************************************************************* * * * 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 * * Last rev: * * mods: * * comments: abstract machine assembler * * * *************************************************************************/ #ifdef SCCS static char SccsId[] = "@(#)amasm.c 1.3 3/15/90"; #endif #include "Yap.h" #include "yapio.h" #include "compile.h" #include "clause.h" #ifdef YAPOR #include "or.macros.h" #endif /* YAPOR */ #if HAVE_STRING_H #include #endif STATIC_PROTO(void Var_Ref, (Ventry *)); STATIC_PROTO(AREG emit_xreg, (CELL)); STATIC_PROTO(YREG emit_yreg, (CELL)); STATIC_PROTO(AREG emit_xreg2, (void)); STATIC_PROTO(AREG emit_x, (CELL)); STATIC_PROTO(YREG emit_y, (Ventry *)); STATIC_PROTO(CODEADDR emit_a, (CELL)); STATIC_PROTO(CODEADDR emit_bmlabel, (CELL)); STATIC_PROTO(CODEADDR emit_ilabel, (CELL)); STATIC_PROTO(Functor emit_f, (CELL)); STATIC_PROTO(CELL emit_c, (CELL)); STATIC_PROTO(COUNT emit_count, (CELL)); STATIC_PROTO(OPCODE emit_op, (op_numbers)); STATIC_PROTO(void a_cl, (op_numbers)); STATIC_PROTO(void a_cle, (op_numbers)); STATIC_PROTO(void a_cld, (op_numbers)); STATIC_PROTO(void a_e, (op_numbers)); STATIC_PROTO(void a_ue, (op_numbers, op_numbers)); STATIC_PROTO(void a_v, (op_numbers)); STATIC_PROTO(void a_uv, (op_numbers, op_numbers)); STATIC_PROTO(void a_vr, (op_numbers)); STATIC_PROTO(void a_rv, (op_numbers)); STATIC_PROTO(void a_vv, (op_numbers, op_numbers)); STATIC_PROTO(void a_glist, (void)); STATIC_PROTO(void a_pair, (CELL *)); STATIC_PROTO(void a_f, (op_numbers)); STATIC_PROTO(void a_c, (op_numbers)); STATIC_PROTO(void a_uc, (op_numbers, op_numbers)); STATIC_PROTO(void a_n, (op_numbers, int)); STATIC_PROTO(void a_un, (op_numbers, op_numbers, int)); STATIC_PROTO(void a_nc, (op_numbers, int)); STATIC_PROTO(void a_unc, (op_numbers, op_numbers, int)); STATIC_PROTO(void a_r, (op_numbers)); STATIC_PROTO(void a_p, (op_numbers)); STATIC_PROTO(void a_pl, (op_numbers,PredEntry *)); STATIC_PROTO(void a_l, (op_numbers)); STATIC_PROTO(void a_3sw, (op_numbers)); STATIC_PROTO(void a_3sws, (op_numbers)); STATIC_PROTO(void a_4sw, (op_numbers)); #if USE_THREADED_CODE STATIC_PROTO(void a_4_lsw, (op_numbers)); #endif STATIC_PROTO(void a_hx, (op_numbers)); STATIC_PROTO(void a_if, (op_numbers)); STATIC_PROTO(void a_go, (op_numbers)); STATIC_PROTO(void a_cut, (void)); #ifdef YAPOR STATIC_PROTO(void a_try, (op_numbers, CELL, CELL, int, int)); STATIC_PROTO(void a_either, (op_numbers, CELL, CELL, int, int)); #else STATIC_PROTO(void a_try, (op_numbers, CELL, CELL)); STATIC_PROTO(void a_either, (op_numbers, CELL, CELL)); #endif /* YAPOR */ STATIC_PROTO(void a_gl_in, (op_numbers)); STATIC_PROTO(void a_gl, (op_numbers)); STATIC_PROTO(void a_bfunc, (CELL)); STATIC_PROTO(AREG compile_cmp_flags, (char *)); STATIC_PROTO(void a_igl, (op_numbers)); STATIC_PROTO(void a_ucons, (op_numbers)); STATIC_PROTO(void a_uvar, (void)); STATIC_PROTO(void a_wvar, (void)); STATIC_PROTO(void do_pass, (void)); #ifdef DEBUG_OPCODES STATIC_PROTO(void DumpOpCodes, (void)); #endif #ifdef SFUNC STATIC_PROTO(void a_vsf, (int)); STATIC_PROTO(void a_asf, (int)); #endif STATIC_PROTO(void check_alloc, (void)); STATIC_PROTO(void a_deallocate, (void)); STATIC_PROTO(void a_bmap, (void)); STATIC_PROTO(void a_fetch_vv, (void)); STATIC_PROTO(void a_fetch_cv, (void)); STATIC_PROTO(void a_fetch_vc, (void)); STATIC_PROTO(void a_f2, (int)); #define CELLSIZE sizeof(CELL) #define MaxLabels 2048 static yamop *code_p; #define GONEXT(TYPE) code_p = ((yamop *)(&(code_p->u.TYPE.next))) static CODEADDR code_addr; static int pass_no; static int *label_offset; static OPREG var_offset; static int is_y_var; static int alloc_found, dealloc_found; static int asm_error = FALSE; static int assembling; static CELL comit_lab; static int do_not_optimize_uatom = FALSE; static AREG x1_arg, x2_arg; static Int c_arg; #define TYPE_XX 0 #define TYPE_CX 1 #define TYPE_XC 2 static int c_type; inline static YREG emit_y(Ventry *ve) { #if MSHIFTOFFS return(-FixedEnvSize - ((ve->NoOfVE) & MaskVarAdrs) - 1); #else return(-FixedEnvSize - (((ve->NoOfVE) & MaskVarAdrs) * CELLSIZE) - CELLSIZE); #endif } inline static void Var_Ref(Ventry *ve) { if (ve->KindOfVE == PermVar) { is_y_var = 1; #if MSHIFTOFFS var_offset = -FixedEnvSize - ((ve->NoOfVE) & MaskVarAdrs) - 1; #else var_offset = -FixedEnvSize - (((ve->NoOfVE) & MaskVarAdrs) * CELLSIZE) - CELLSIZE; #endif } else { is_y_var = 0; #if PRECOMPUTE_REGADDRESS var_offset = (CELL) (XREGS + ((ve->NoOfVE) & MaskVarAdrs)); #else #if MSHIFTOFFS var_offset = ((ve->NoOfVE) & MaskVarAdrs); #else var_offset = CELLSIZE * ((ve->NoOfVE) & MaskVarAdrs); #endif #endif /* PRECOMPUTE_REGADDRESS */ } } #define is_void_var() (((Ventry *) (cpc->rnd1))->KindOfVE == VoidVar) #define is_a_void(X) (((Ventry *) (X))->KindOfVE == VoidVar) #define is_temp_var() (((Ventry *) (cpc->rnd1))->KindOfVE == TempVar) #define is_atemp_var(p) (((Ventry *) (p->rnd1))->KindOfVE == TempVar) #define no_ref_var() (((Ventry *) (cpc->rnd1))->NoOfVE == 1) #define no_ref(X) (((Ventry *) (X))->NoOfVE == 1) inline static void fill_small(CELL w) { SMALLUNSGN *ptr = ((SMALLUNSGN *) (code_p)); if (pass_no) *ptr = (SMALLUNSGN) w; code_p = (yamop *) (++ptr); } inline static void fill_a(CELL a) { CELL *ptr = ((CELL *) (code_p)); if (pass_no) *ptr = a; code_p = (yamop *) (++ptr); } inline static AREG emit_xreg(CELL w) { return ((AREG) w); } inline static YREG emit_yreg(CELL w) { return ((YREG) w); } inline static AREG emit_xreg2(void) { #if PRECOMPUTE_REGADDRESS return (emit_xreg((CELL) (XREGS + cpc->rnd2))); #else #if MSHIFTOFFS return (emit_xreg(cpc->rnd2)); #else return (emit_xreg(CELLSIZE * (cpc->rnd2))); #endif #endif /* ALIGN_LONGS */ } inline static AREG 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 */ } inline static CODEADDR emit_a(CELL a) { return ((CODEADDR) (a)); } inline static CODEADDR emit_ilabel(register CELL addr) { if (addr & 1) return (emit_a(Unsigned(code_addr) + label_offset[addr])); else return (emit_a(addr)); } inline static CODEADDR emit_bmlabel(register CELL addr) { return (emit_a(Unsigned(code_addr) + 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) YP_fprintf(YP_stderr, "%5d %6lx", j, absmadr(j)); YP_putchar('\n'); ++i; } } #endif static inline OPCODE emit_op(op_numbers op) { return (absmadr((Int) op)); } OPCODE opcode(op_numbers op) { return (emit_op(op)); } static void a_cl(op_numbers opcode) { if (pass_no) { Clause *cl = (Clause *)code_addr; code_p->opc = emit_op(opcode); code_p->u.l.l = code_addr; cl->u.ClVarChain = (yamop *)(Unsigned(code_addr) + label_offset[1]); } GONEXT(l); } static void a_cle(op_numbers opcode) { if (pass_no) { Clause *cl = (Clause *)code_addr; code_p->opc = emit_op(opcode); code_p->u.EC.ClTrail = 0; code_p->u.EC.ClENV = 0; code_p->u.EC.ClRefs = 0; code_p->u.EC.ClBase = code_addr; cl->u2.ClExt = code_p; cl->ClFlags |= LogUpdRuleMask; } GONEXT(EC); } static void a_cld(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.l.l = (CODEADDR)(((Clause *)code_addr)->u2.ClExt); } GONEXT(l); } inline static void a_e(op_numbers opcode) { if (pass_no) code_p->opc = emit_op(opcode); GONEXT(e); } inline static void a_ue(op_numbers opcode, op_numbers opcodew) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.o.opcw = emit_op(opcodew); } GONEXT(o); } inline static void a_v(op_numbers opcode) { Ventry *ve = (Ventry *) cpc->rnd1; Var_Ref(ve); if (ve->KindOfVE == PermVar) { if (pass_no) { code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var)); code_p->u.y.y = emit_yreg(var_offset); } GONEXT(y); } else { if (pass_no) { code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var)); code_p->u.x.x = emit_xreg(var_offset); } GONEXT(x); } } inline static void a_uv(op_numbers opcode, op_numbers opcodew) { Ventry *ve = (Ventry *) cpc->rnd1; Var_Ref(ve); if (ve->KindOfVE == PermVar) { if (pass_no) { code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var)); code_p->u.oy.opcw = emit_op((op_numbers)((int)opcodew + is_y_var)); code_p->u.oy.y = emit_yreg(var_offset); } GONEXT(oy); } else { if (pass_no) { code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var)); code_p->u.ox.opcw = emit_op((op_numbers)((int)opcodew + is_y_var)); code_p->u.ox.x = emit_xreg(var_offset); } GONEXT(ox); } } inline static void a_vv(op_numbers opcode, op_numbers opcodew) { Ventry *ve = (Ventry *) cpc->rnd1; Var_Ref(ve); if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.oxx.opcw = emit_op(opcodew); code_p->u.oxx.xl = emit_xreg(var_offset); } cpc = cpc->nextInst; ve = (Ventry *) cpc->rnd1; Var_Ref(ve); if (pass_no) code_p->u.oxx.xr = emit_xreg(var_offset); GONEXT(oxx); } inline static void a_vr(op_numbers opcode) { Ventry *ve = (Ventry *) cpc->rnd1; Var_Ref(ve); if (ve->KindOfVE == PermVar) { if (pass_no) { code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var)); code_p->u.yx.y = emit_yreg(var_offset); code_p->u.yx.x = emit_xreg2(); } GONEXT(yx); } else { if (pass_no) { code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var)); code_p->u.xx.xl = emit_xreg(var_offset); code_p->u.xx.xr = emit_xreg2(); } GONEXT(xx); } } inline static void a_rv(op_numbers opcode) { Ventry *ve = (Ventry *) cpc->rnd1; if (ve->KindOfVE == PermVar) { if (pass_no) { code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var)); code_p->u.xy.x = emit_xreg2(); code_p->u.xy.y = emit_yreg(var_offset); } GONEXT(xy); } else { if (pass_no) { code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var)); code_p->u.xx.xl = emit_xreg2(); code_p->u.xx.xr = emit_xreg(var_offset); } GONEXT(xx); } } #ifdef SFUNC /* vsc: I don't understand these instructions */ inline static void a_vsf(opcode) int opcode; { Ventry *ve = (Ventry *) cpc->rnd1; Var_Ref(ve); if (ve->KindOfVE == PermVar) { if (pass_no) { code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var)); code_p->u.fy.f = emit_f(cpc->rnd2); code_p->u.fy.a = ArityOfFunctor(emit_f(cpc->rnd2)); code_p->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->u.fx.f = emit_f(cpc->rnd2); code_p->u.fx.a = ArityOfFunctor(emit_f(cpc->rnd2)); code_p->u.fx.x = emit_xreg(var_offset); } GONEXT(fx); } } inline static void a_asf(opcode) int opcode; { if (pass_no) { code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var)); code_p->u.fn.f = emit_f(cpc->rnd2); code_p->u.fn.a = ArityOfFunctor(emit_f(cpc->rnd2)); code_p->u.fn.n = emit_count(cpc->rnd1); } GONEXT(fn); } #endif inline static void a_pair(CELL *seq_ptr) { CELL *ptr = ((CELL *) (code_p)); code_p = (yamop *) (ptr + 2); if (pass_no) { ptr[0] = (CELL) emit_a(*seq_ptr); ptr[1] = (CELL) emit_ilabel(seq_ptr[1]); } } inline static void a_n(op_numbers opcode, int count) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.s.s = count; } GONEXT(s); } inline static void a_un(op_numbers opcode, op_numbers opcodew, int count) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.os.opcw = emit_op(opcodew); code_p->u.os.s = count; } GONEXT(os); } inline static void a_f(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.f.f = emit_f(cpc->rnd1); code_p->u.f.a = ArityOfFunctor(emit_f(cpc->rnd1)); } GONEXT(f); } inline static void a_uf(op_numbers opcode, op_numbers opcodew) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.of.opcw = emit_op(opcodew); code_p->u.of.f = emit_f(cpc->rnd1); code_p->u.of.a = ArityOfFunctor(emit_f(cpc->rnd1)); } GONEXT(of); } inline static void a_c(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.c.c = emit_c(cpc->rnd1); } GONEXT(c); } inline static void a_uc(op_numbers opcode, op_numbers opcode_w) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.oc.opcw = emit_op(opcode_w); code_p->u.oc.c = emit_c(cpc->rnd1); } GONEXT(oc); } inline static void a_blob(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.c.c = AbsAppl((CELL *)(Unsigned(code_addr) + label_offset[cpc->rnd1])); } GONEXT(c); } inline static void a_ublob(op_numbers opcode, op_numbers opcode_w) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.oc.opcw = emit_op(opcode_w); code_p->u.oc.c = AbsAppl((CELL *)(Unsigned(code_addr) + label_offset[cpc->rnd1])); } GONEXT(oc); } inline static void a_nc(op_numbers opcode, int i) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.sc.s = i; code_p->u.sc.c = emit_c(cpc->rnd1); } GONEXT(sc); } inline static void a_unc(op_numbers opcode, op_numbers opcodew, int i) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.osc.opcw = emit_op(opcodew); code_p->u.osc.s = i; code_p->u.osc.c = emit_c(cpc->rnd1); } GONEXT(osc); } inline static void a_rf(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.xf.x = emit_xreg2(); code_p->u.xf.f = emit_f(cpc->rnd1); code_p->u.xf.a = ArityOfFunctor(emit_f(cpc->rnd1)); } GONEXT(xf); } inline static void a_rc(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.xc.x = emit_xreg2(); code_p->u.xc.c = emit_c(cpc->rnd1); } GONEXT(xc); } inline static void a_rb(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.xc.x = emit_xreg2(); code_p->u.xc.c = AbsAppl((CELL *)(Unsigned(code_addr) + label_offset[cpc->rnd1])); } GONEXT(xc); } inline static void a_r(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.x.x = emit_xreg2(); } GONEXT(x); } static void check_alloc(void) { if (alloc_found == 2) { if (CurrentPred->PredFlags & LogUpdatePredFlag) a_cle(_alloc_for_logical_pred); a_e(_allocate); alloc_found = 1; } } static void a_p(op_numbers opcode) { /* emit opcode & predicate code address */ int comit_ok = (comit_lab == 0); Prop fe = (Prop) (cpc->rnd1); CELL Flags = RepPredProp(fe)->PredFlags; if (Flags & BasicPredFlag) { op_numbers op; check_alloc(); switch (Flags & 0x7f) { case _equal: op = _p_equal; break; case _dif: op = _p_dif; break; case _eq: op = _p_eq; break; case _functor: op = _p_functor; break; default: op = _p_equal; /* just to make some compilers happy */ Error(SYSTEM_ERROR, TermNil, "internal assembler error for built-in (%d)", (Flags & 0x7f)); save_machine_regs(); longjmp(CompilerBotch, 1); } a_e(op); if (!comit_ok) { Error(SYSTEM_ERROR, TermNil,"internal assembler error for commit"); save_machine_regs(); longjmp(CompilerBotch, 1); } return; } if (Flags & CPredFlag) { check_alloc(); if (!comit_ok && (Flags & TestPredFlag)) { if (pass_no) { if (Flags & UserCPredFlag) { Error(SYSTEM_ERROR, TermNil, "user defined predicate cannot be a test predicate"); save_machine_regs(); longjmp(CompilerBotch, 1); } else code_p->opc = emit_op(_call_c_wfail); code_p->u.sdl.s = emit_count(-Signed(RealEnvSize) - CELLSIZE * cpc->rnd2); code_p->u.sdl.d = emit_a((CELL) RepPredProp(fe)->CodeOfPred); code_p->u.sdl.l = emit_a(Unsigned(code_addr) + label_offset[comit_lab]); code_p->u.sdl.p = emit_a((CELL) RepPredProp(fe)); } GONEXT(sdl); comit_lab = 0; comit_ok = TRUE; } else { if (pass_no) { if (Flags & UserCPredFlag) code_p->opc = emit_op(_call_usercpred); else code_p->opc = emit_op(_call_cpred); code_p->u.sla.s = emit_count(-Signed(RealEnvSize) - CELLSIZE * (cpc->rnd2)); code_p->u.sla.l = emit_a((CELL) RepPredProp(fe)->CodeOfPred); code_p->u.sla.p = emit_a((CELL) RepPredProp(fe)); if (cpc->rnd2) code_p->u.sla.l2 = emit_bmlabel(cpc->arnds[1]); else /* there is no bitmap as there are no variables in the environment */ code_p->u.sla.l2 = (CELL)NIL; } GONEXT(sla); } if (!comit_ok) { Error(SYSTEM_ERROR, TermNil, "internal assembler error for commit"); save_machine_regs(); longjmp(CompilerBotch,1); } return; } if (opcode == _call && alloc_found == 2) { if (CurrentPred->PredFlags & LogUpdatePredFlag) a_cle(_alloc_for_logical_pred); if (pass_no) { code_p->opc = emit_op(_fcall); } alloc_found = 1; } else { check_alloc(); if (pass_no) code_p->opc = emit_op(opcode); } if (opcode == _call) { if (pass_no) { code_p->u.sla.s = emit_count(-Signed(RealEnvSize) - CELLSIZE * cpc->rnd2); code_p->u.sla.l = emit_a((CELL) & RepPredProp(fe)->StateOfPred); code_p->u.sla.p = emit_a((CELL) RepPredProp(fe)); if (cpc->rnd2) code_p->u.sla.l2 = emit_bmlabel(cpc->arnds[1]); else /* there is no bitmap as there are no variables in the environment */ code_p->u.sla.l2 = (CELL)NIL; } GONEXT(sla); } else { if (pass_no) code_p->u.l.l = emit_a((CELL) &RepPredProp(fe)->StateOfPred); GONEXT(l); } if (!comit_ok) { Error(SYSTEM_ERROR, TermNil, "internal assembler error for commit"); save_machine_regs(); longjmp(CompilerBotch,1); } } /* emit a false call so that the garbage collector and friends will find reasonable information on the stack. */ static void a_empty_call(void) { if (alloc_found == 1 && !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(GetPredProp(AtomTrue,0)); code_p->u.sla.s = emit_count(-Signed(RealEnvSize) - CELLSIZE * cpc->rnd2); code_p->u.sla.l = emit_a((CELL)&(pe->StateOfPred)); code_p->u.sla.p = emit_a((CELL)pe); if (cpc->rnd2) code_p->u.sla.l2 = emit_bmlabel(cpc->rnd1); else /* there is no bitmap as there are no variables in the environment */ code_p->u.sla.l2 = (CELL)NIL; } GONEXT(sla); } static void a_l(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.l.l = emit_a(Unsigned(code_addr) + label_offset[cpc->rnd1]); } GONEXT(l); } static void a_pl(op_numbers opcode, PredEntry *pred) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.l.l = emit_a((CELL)pred); } GONEXT(l); } static AREG compile_cmp_flags(char *s) { 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(EQ_OK_IN_CMP|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); Error(SYSTEM_ERROR, x1_arg, "internal assembler error in flags for %s", s); return(0); } static void a_bfunc(CELL pred) { Ventry *ve = (Ventry *) cpc->rnd1; Var_Ref(ve); if (ve->KindOfVE == PermVar) { YREG v1 = emit_yreg(var_offset); cpc = cpc->nextInst; ve = (Ventry *) cpc->rnd1; Var_Ref(ve); if (ve->KindOfVE == PermVar) { if (pass_no) { code_p->opc = emit_op(_call_bfunc_yy); code_p->u.lxy.p = (CODEADDR) RepPredProp(((Prop)pred)); code_p->u.lyy.l = (CODEADDR) (RepPredProp(((Prop)pred))->TrueCodeOfPred); code_p->u.lyy.y1 = v1; code_p->u.lyy.y2 = emit_yreg(var_offset); code_p->u.lyy.flags = compile_cmp_flags(RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))->StrOfAE); } GONEXT(lyy); } else { if (pass_no) { code_p->opc = emit_op(_call_bfunc_yx); code_p->u.lxy.l = (CODEADDR) (RepPredProp(((Prop)pred))->TrueCodeOfPred); code_p->u.lxy.p = (CODEADDR) RepPredProp(((Prop)pred)); code_p->u.lxy.x = emit_xreg(var_offset); code_p->u.lxy.y = v1; code_p->u.lxy.flags = compile_cmp_flags(RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))->StrOfAE); } GONEXT(lxy); } } else { AREG x1 = emit_xreg(var_offset); cpc = cpc->nextInst; ve = (Ventry *) cpc->rnd1; Var_Ref(ve); if (ve->KindOfVE == PermVar) { if (pass_no) { code_p->opc = emit_op(_call_bfunc_xy); code_p->u.lxy.l = (CODEADDR) (RepPredProp(((Prop)pred))->TrueCodeOfPred); code_p->u.lxy.p = (CODEADDR) RepPredProp(((Prop)pred)); code_p->u.lxy.x = x1; code_p->u.lxy.y = emit_yreg(var_offset); code_p->u.lxy.flags = compile_cmp_flags(RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))->StrOfAE); } GONEXT(lxy); } else { if (pass_no) { code_p->opc = emit_op(_call_bfunc_xx); code_p->u.lxy.p = (CODEADDR) RepPredProp(((Prop)pred)); code_p->u.lxx.l = (CODEADDR) (RepPredProp(((Prop)pred))->TrueCodeOfPred); code_p->u.lxx.x1 = x1; code_p->u.lxx.x2 = emit_xreg(var_offset); code_p->u.lxx.flags = compile_cmp_flags(RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))->StrOfAE); } GONEXT(lxx); } } } static void a_igl(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.l.l = emit_a(cpc->rnd1); } GONEXT(l); } static void a_3sw(op_numbers opcode) { CELL *seq_ptr; if (pass_no) { code_p->opc = emit_op(opcode); seq_ptr = cpc->arnds; code_p->u.lll.l1 = emit_ilabel(seq_ptr[0]); code_p->u.lll.l2 = emit_ilabel(seq_ptr[1]); code_p->u.lll.l3 = emit_ilabel(seq_ptr[2]); } GONEXT(lll); } static void a_3sws(op_numbers opcode) { CELL *seq_ptr; if (pass_no) { code_p->opc = emit_op(opcode); seq_ptr = cpc->arnds; code_p->u.slll.s = IPredArity; code_p->u.slll.p = (CODEADDR)CurrentPred; #ifdef YAPOR INIT_YAMOP_LTT(code_p, cpc->rnd1 >> 1); if (cpc->rnd1 & 1) PUT_YAMOP_CUT(code_p); if (CurrentPred->PredFlags & SequentialPredFlag) PUT_YAMOP_SEQ(code_p); #endif /* YAPOR */ code_p->u.slll.l1 = emit_ilabel(seq_ptr[0]); code_p->u.slll.l2 = emit_ilabel(seq_ptr[1]); code_p->u.slll.l3 = emit_ilabel(seq_ptr[2]); } GONEXT(slll); } static void a_4sw(op_numbers opcode) { CELL *seq_ptr; if (pass_no) { code_p->opc = emit_op(opcode); seq_ptr = cpc->arnds; code_p->u.llll.l1 = emit_ilabel(seq_ptr[0]); code_p->u.llll.l2 = emit_ilabel(seq_ptr[1]); code_p->u.llll.l3 = emit_ilabel(seq_ptr[2]); code_p->u.llll.l4 = emit_ilabel(seq_ptr[3]); } GONEXT(llll); } #if USE_THREADED_CODE /* specialised code for fast switch_on_list, taking advantage of the fact that in this case we are sure it is a list */ static void a_4_lsw(op_numbers opcode) { CELL *seq_ptr; seq_ptr = cpc->arnds; if (opcode == _switch_list_nl && (seq_ptr[0] & 1)) { /* local address, don't do anything because we don't know what is supposed to be there */ if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.llll.l1 = emit_ilabel(seq_ptr[0]); code_p->u.llll.l2 = emit_ilabel(seq_ptr[1]); code_p->u.llll.l3 = emit_ilabel(seq_ptr[2]); code_p->u.llll.l4 = emit_ilabel(seq_ptr[3]); } GONEXT(llll); } else { /* optimise direct jumps to list like code, by prefetching the first address for lists */ if (pass_no) { code_p->opc = emit_op(_switch_list_nl_prefetch); code_p->u.ollll.pop = ((yamop *)(seq_ptr[0]))->opc; code_p->u.ollll.l1 = emit_ilabel(seq_ptr[0]); code_p->u.ollll.l2 = emit_ilabel(seq_ptr[1]); code_p->u.ollll.l3 = emit_ilabel(seq_ptr[2]); code_p->u.ollll.l4 = emit_ilabel(seq_ptr[3]); } GONEXT(ollll); } } #endif static void a_hx(op_numbers opcode) { register CELL i, imax; register CELL *seq_ptr = cpc->arnds; imax = cpc->rnd1; if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.c.c = emit_c(imax); } GONEXT(c); for (i = 0; i < imax; i++) { a_pair(seq_ptr); seq_ptr += 2; } } static void a_if(op_numbers opcode) { register CELL i, imax; register CELL *seq_ptr = cpc->arnds + 1; imax = cpc->rnd1; if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.sl.s = emit_count(imax); code_p->u.sl.l = emit_ilabel(cpc->arnds[0]); } GONEXT(sl); for (i = 0; i < imax; i++) { a_pair(seq_ptr); seq_ptr += 2; } } static void a_go(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.cll.c = emit_count(cpc->arnds[0]); code_p->u.cll.l1 = emit_ilabel(cpc->arnds[1]); code_p->u.cll.l2 = emit_ilabel(cpc->arnds[2]); } GONEXT(cll); } static void a_cut(void) { check_alloc(); if (dealloc_found) { a_e(_cut_e); } else if (alloc_found) a_e(_cut); else a_e(_cut_t); } static void #ifdef YAPOR a_try(op_numbers opcode, CELL lab, CELL opr, int nofalts, int hascut) #else a_try(op_numbers opcode, CELL lab, CELL opr) #endif /* YAPOR */ { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.ld.d = emit_a(lab); code_p->u.ld.s = emit_count(opr); code_p->u.ld.p = (CODEADDR)CurrentPred; #ifdef YAPOR INIT_YAMOP_LTT(code_p, nofalts); if (hascut) PUT_YAMOP_CUT(code_p); if (CurrentPred->PredFlags & SequentialPredFlag) PUT_YAMOP_SEQ(code_p); #endif /* YAPOR */ } GONEXT(ld); } static void a_gl_in(op_numbers opcode) { if (pass_no) { code_p->opc = emit_op(opcode); code_p->u.ldl.d = emit_a(cpc->rnd1); code_p->u.ldl.s = emit_count(IPredArity); code_p->u.ldl.p = (CODEADDR)CurrentPred; #ifdef YAPOR INIT_YAMOP_LTT(code_p, cpc->rnd2 >> 1); if (cpc->rnd2 & 1) PUT_YAMOP_CUT(code_p); if (CurrentPred->PredFlags & SequentialPredFlag) PUT_YAMOP_SEQ(code_p); #endif /* YAPOR */ /* next op is a jump, with the jump giving the address to fail to after this alternative */ cpc = cpc->nextInst; code_p->u.ldl.bl = emit_ilabel(cpc->rnd1); } else cpc = cpc->nextInst; GONEXT(ldl); } static void #ifdef YAPOR a_either(op_numbers opcode, CELL opr, CELL lab, int nofalts, int hascut) #else a_either(op_numbers opcode, CELL opr, CELL lab) #endif /* YAPOR */ { if (pass_no) { Prop fe = GetPredProp(AtomTrue,0); code_p->opc = emit_op(opcode); code_p->u.sla.s = emit_count(opr); code_p->u.sla.l = emit_a(lab); /* use code for atom true so that we won't try to do anything smart */ code_p->u.sla.p = emit_a((CELL) RepPredProp(fe));; #ifdef YAPOR /* code_p->u.sla.p = (CODEADDR)CurrentPred; */ INIT_YAMOP_LTT(code_p, nofalts); if (hascut) PUT_YAMOP_CUT(code_p); if (CurrentPred->PredFlags & SequentialPredFlag) PUT_YAMOP_SEQ(code_p); if(opcode != _or_last) { code_p->u.sla.l2 = emit_bmlabel(cpc->arnds[1]); } #else code_p->u.sla.l2 = emit_bmlabel(cpc->arnds[1]); #endif /* YAPOR */ } GONEXT(sla); } static void a_gl(op_numbers opcode) { #ifdef YAPOR a_try(opcode, cpc->rnd1, IPredArity, cpc->rnd2 >> 1, cpc->rnd2 & 1); #else a_try(opcode, cpc->rnd1, IPredArity); #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 void a_ucons(op_numbers opcode) { #if AGGREGATE_OPS PInstr *np = cpc->nextInst; register int i = 0; CELL my_cons = cpc->rnd1; if (do_not_optimize_uatom) { do_not_optimize_uatom = FALSE; if (opcode == unify_atom_op) a_uc(_unify_atom, _unify_atom_write); else a_c(_write_atom); } else { while (np->op == opcode && np->rnd1 == my_cons) { i++; cpc = np; np = np->nextInst; } if (i == 0) { if (opcode == unify_atom_op) a_uc(_unify_atom, _unify_atom_write); else a_c(_write_atom); } else { if (opcode == unify_atom_op) a_unc(_unify_n_atoms, _unify_n_atoms_write, i + 1); else a_nc(_write_n_atoms, i + 1); } } #else do_not_optimize_uatom = FALSE; if (opcode == unify_atom_op) a_uc(_unify_atom, _unify_atom_write); else a_c(_write_atom); #endif } static void a_uvar(void) { if (!is_void_var()) { #if AGGREGATE_OPS if (is_temp_var()) { PInstr *np = cpc->nextInst; if (np->op == unify_var_op && is_atemp_var(np)) { a_vv(_unify_x_var2, _unify_x_var2_write); return; } else if (np->op == unify_last_var_op && is_atemp_var(np)) { a_vv(_unify_l_x_var2, _unify_l_x_var2_write); return; } } #endif /* AGGREGATE_OPS */ a_uv(_unify_x_var, _unify_x_var_write); } else { #if AGGREGATE_OPS int i = 1; PInstr *np = cpc->nextInst; /* skip void vars */ while (np->op == unify_var_op && is_a_void(np->rnd1)) { i++; cpc = np; np = np->nextInst; } if (np->op == unify_last_var_op && is_a_void(np->rnd1)) { if (i == 0) a_ue(_unify_l_void, _unify_l_void_write); else a_un(_unify_l_n_voids, _unify_l_n_voids_write, i + 1); cpc = np; } else if (i == 1) a_ue(_unify_void, _unify_void_write); else { a_un(_unify_n_voids, _unify_n_voids_write, i); } #else a_ue(_unify_void, _unify_void_write); #endif } } static void a_wvar(void) { if (!no_ref_var()) a_v(_write_x_var); else { #if AGGREGATE_OPS int i = 0; PInstr *np = cpc->nextInst; while (np->op == write_var_op && no_ref(np->rnd1)) { i++; cpc = np; np = np->nextInst; } if (i == 0) a_e(_write_void); else { a_n(_write_n_voids, i + 1); } #else a_e(_write_void); #endif } } static void a_glist(void) { #if AGGREGATE_OPS PInstr *pnext = cpc->nextInst; if (cpc->rnd2 != 1 && pnext->op == unify_val_op) { Ventry *ve = (Ventry *) pnext->rnd1; pnext->rnd2 = cpc->rnd2; cpc = pnext; Var_Ref(ve); a_rv(_glist_valx); } else if (cpc->rnd2 == 1 && pnext->op == unify_atom_op) { do_not_optimize_uatom = TRUE; a_r(_get_list); } else if (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; ppnext->rnd2 = cpc->rnd2; cpc = ppnext; Var_Ref(ve); a_rv((op_numbers)((int)_gl_void_varx + (cpc->op == unify_last_var_op ? 0 : 2))); } else a_r(_get_list); } else #endif /* AGGREGATE_OPS */ a_r(_get_list); } #define NEXTOPC (cpc->nextInst)->op static void a_deallocate(void) { if (alloc_found == 2) { /* this should never happen */ if (CurrentPred->PredFlags & LogUpdatePredFlag) a_cle(_alloc_for_logical_pred); a_e(_allocate); } if (CurrentPred->PredFlags & LogUpdatePredFlag) a_cld(_dealloc_for_logical_pred); if (NEXTOPC == execute_op) { cpc = cpc->nextInst; a_p(_dexecute); } else a_e(_deallocate); dealloc_found = TRUE; } static void a_bmap(void) { /* how much space do we need to reserve */ int i, max = (cpc->rnd1)/(8*sizeof(CELL)); fill_a((CELL)CurrentPred); for (i = 0; i <= max; i++) fill_a(cpc->arnds[i]); } static void a_bregs(void) { /* how much space do we need to reserve */ int i, max = (cpc->rnd1)/(8*sizeof(CELL)); fill_a(cpc->rnd1); for (i = 0; i <= max; i++) fill_a(cpc->arnds[i]); } static void copy_blob(void) { /* 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++) fill_a(cpc->arnds[i]); } static void a_fetch_vv(void) { /* the next three instructions must be a get_val, get_val, and BIP */ if (pass_no == 0) { PInstr *p = cpc->nextInst; Ventry *ve; ve = (Ventry *) p->rnd1; if (ve->KindOfVE != PermVar) p->op = nop_op; p = p->nextInst; ve = (Ventry *) p->rnd1; if (ve->KindOfVE != PermVar) p->op = nop_op; } else { PInstr *p = cpc->nextInst; Ventry *ve; c_type = TYPE_XX; ve = (Ventry *) p->rnd1; if (ve->KindOfVE == PermVar) { /* don't get rid of get_val_op */ x1_arg = emit_x(p->rnd2); } else { /* and use it directly as a second argument */ x1_arg = emit_x(ve->NoOfVE & MaskVarAdrs); } p = p->nextInst; ve = (Ventry *) p->rnd1; if (ve->KindOfVE == PermVar) { /* don't get rid of get_val_op */ x2_arg = emit_x(p->rnd2); } else { /* and use it directly as a second argument */ x2_arg = emit_x(ve->NoOfVE & MaskVarAdrs); } } } static void a_fetch_vc(void) { /* the next two instructions must be a get_val and BIP */ if (pass_no == 0) { PInstr *p = cpc->nextInst; Ventry *ve; ve = (Ventry *) p->rnd1; if (ve->KindOfVE != PermVar) p->op = nop_op; } else { PInstr *p = cpc->nextInst; Ventry *ve; c_type = TYPE_XC; c_arg = (Int)(cpc->rnd1); ve = (Ventry *) p->rnd1; if (ve->KindOfVE == PermVar) { /* don't get rid of get_val_op */ x1_arg = emit_x(p->rnd2); } else { /* and use it directly as a second argument */ x1_arg = emit_x(ve->NoOfVE & MaskVarAdrs); } } } static void a_fetch_cv(void) { /* the next two instructions must be a get_val and BIP */ if (pass_no == 0) { PInstr *p = cpc->nextInst; Ventry *ve; ve = (Ventry *) p->rnd1; if (ve->KindOfVE != PermVar) p->op = nop_op; } else { PInstr *p = cpc->nextInst; Ventry *ve; c_type = TYPE_CX; c_arg = (Int)(cpc->rnd1); ve = (Ventry *) p->rnd1; if (ve->KindOfVE == PermVar) { /* don't get rid of get_val_op */ x1_arg = emit_x(p->rnd2); } else { /* and use it directly as a second argument */ x1_arg = emit_x(ve->NoOfVE & MaskVarAdrs); } } } static void a_f2(int var) { Int opc = cpc->rnd2; Ventry *ve = (Ventry *)(cpc->rnd1); int is_y_var = (ve->KindOfVE == PermVar); if (opc <= _primitive) { if (is_y_var) { if (pass_no) { code_p->u.y.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: code_p->opc = opcode(_p_cut_by_y); break; case _primitive: code_p->opc = opcode(_p_primitive_y); break; } } GONEXT(y); return; } else { if (pass_no) { code_p->u.x.x = emit_x(ve->NoOfVE & MaskVarAdrs); 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: code_p->opc = opcode(_p_cut_by_x); break; case _primitive: code_p->opc = opcode(_p_primitive_x); break; } } GONEXT(x); return; } } if (opc == _functor && cpc->nextInst->op == f_var_op) { Ventry *nve; cpc = cpc->nextInst; nve = (Ventry *)(cpc->rnd1); if (is_y_var) { if (nve->KindOfVE == PermVar) { if (pass_no) { code_p->opc = emit_op(_p_func2f_yy); code_p->u.yyx.y1 = emit_y(ve); code_p->u.yyx.y2 = emit_y(nve); code_p->u.yyx.x = x1_arg; } GONEXT(yyx); return; } else { if (pass_no) { code_p->opc = emit_op(_p_func2f_yx); code_p->u.yxx.y = emit_y(ve); code_p->u.yxx.x1 = emit_x(nve->NoOfVE & MaskVarAdrs); code_p->u.yxx.x2 = x1_arg; } GONEXT(yxx); return; } } else { if (nve->KindOfVE == PermVar) { if (pass_no) { code_p->opc = emit_op(_p_func2f_xy); code_p->u.xyx.x1 = emit_x(ve->NoOfVE & MaskVarAdrs); code_p->u.xyx.y2 = emit_y(nve); code_p->u.xyx.x = x1_arg; } GONEXT(xyx); return; } else { if (pass_no) { code_p->opc = emit_op(_p_func2f_xx); code_p->u.xxx.x1 = emit_x(ve->NoOfVE & MaskVarAdrs); code_p->u.xxx.x2 = emit_x(nve->NoOfVE & MaskVarAdrs); code_p->u.xxx.x = x1_arg; } GONEXT(xxx); return; } } } if (is_y_var) { switch (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->u.yxx.y = emit_y(ve); code_p->u.yxx.x1 = x1_arg; code_p->u.yxx.x2 = x2_arg; } GONEXT(yxx); break; case TYPE_CX: if (pass_no) { switch (opc) { case _plus: Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for +/2"); save_machine_regs(); longjmp(CompilerBotch, 1); break; case _minus: code_p->opc = emit_op(_p_minus_y_cv); break; case _times: Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for */2"); save_machine_regs(); longjmp(CompilerBotch, 1); break; case _div: code_p->opc = emit_op(_p_div_y_cv); break; case _and: Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for /\\/2"); save_machine_regs(); longjmp(CompilerBotch, 1); break; case _or: Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for \\//2"); save_machine_regs(); longjmp(CompilerBotch, 1); break; case _sll: code_p->opc = emit_op(_p_sll_y_cv); save_machine_regs(); longjmp(CompilerBotch, 1); break; case _slr: code_p->opc = emit_op(_p_slr_y_cv); save_machine_regs(); longjmp(CompilerBotch, 1); 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->u.ycx.y = emit_y(ve); code_p->u.ycx.c = c_arg; code_p->u.ycx.xi = x1_arg; } GONEXT(ycx); break; case TYPE_XC: if (pass_no) { switch (opc) { case _plus: code_p->opc = emit_op(_p_plus_y_vc); break; case _minus: Error(SYSTEM_ERROR, x2_arg, "internal assembler error XC for -/2"); save_machine_regs(); longjmp(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: code_p->opc = emit_op(_p_sll_y_vc); break; case _slr: code_p->opc = emit_op(_p_slr_y_vc); break; case _arg: Error(SYSTEM_ERROR, x2_arg, "internal assembler error for arg/3"); save_machine_regs(); longjmp(CompilerBotch, 1); break; case _functor: code_p->opc = emit_op(_p_func2s_y_vc); break; } code_p->u.yxc.y = emit_y(ve); code_p->u.yxc.c = c_arg; code_p->u.yxc.xi = x1_arg; } GONEXT(yxc); break; } } else { switch (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->u.xxx.x = emit_x(ve->NoOfVE & MaskVarAdrs); code_p->u.xxx.x1 = x1_arg; code_p->u.xxx.x2 = x2_arg; } GONEXT(xxx); break; case TYPE_CX: if (pass_no) { switch (opc) { case _plus: Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for +/2"); save_machine_regs(); longjmp(CompilerBotch, 1); break; case _minus: code_p->opc = emit_op(_p_minus_cv); break; case _times: Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for */2"); save_machine_regs(); longjmp(CompilerBotch, 1); break; case _div: code_p->opc = emit_op(_p_div_cv); break; case _and: Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for /\\/2"); save_machine_regs(); longjmp(CompilerBotch, 1); break; case _or: Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for \\//2"); save_machine_regs(); longjmp(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->u.xxc.x = emit_x(ve->NoOfVE & MaskVarAdrs); code_p->u.xxc.c = c_arg; code_p->u.xxc.xi = x1_arg; } GONEXT(xxc); break; case TYPE_XC: if (pass_no) { switch (opc) { case _plus: code_p->opc = emit_op(_p_plus_vc); break; case _minus: Error(SYSTEM_ERROR, x2_arg, "internal assembler error XC for -/2"); save_machine_regs(); longjmp(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: code_p->opc = emit_op(_p_sll_vc); break; case _slr: code_p->opc = emit_op(_p_slr_vc); break; case _arg: Error(SYSTEM_ERROR, x2_arg, "internal assembler error for arg/3"); save_machine_regs(); longjmp(CompilerBotch, 1); break; case _functor: code_p->opc = emit_op(_p_func2s_vc); break; } code_p->u.xcx.x = emit_x(ve->NoOfVE & MaskVarAdrs); code_p->u.xcx.c = c_arg; code_p->u.xcx.xi = x1_arg; } GONEXT(xcx); break; } } } #define TRYOP(G,P) (IPredArity<5 ? (op_numbers)((int)(P)+(IPredArity*3)) : (G)) #ifdef YAPOR #define TRYCODE(G,P) a_try(TRYOP(G,P), Unsigned(code_addr) + label_offset[cpc->rnd1], IPredArity, cpc->rnd2 >> 1, cpc->rnd2 & 1); #else #define TRYCODE(G,P) a_try(TRYOP(G,P), Unsigned(code_addr) + label_offset[cpc->rnd1], IPredArity); #endif /* YAPOR */ static void do_pass(void) { #ifdef YAPOR #define EITHER_INST 50 yamop *entry_code; yamop *either_inst[EITHER_INST]; int either_cont = 0; #endif /* YAPOR */ int log_update; #if defined(YAPOR) || defined(THREADS) int dynamic; #endif int ystop_found = FALSE; alloc_found = dealloc_found = FALSE; code_p = (yamop *) code_addr; cpc = CodeStart; comit_lab = 0L; /* Space while for the clause flags */ log_update = CurrentPred->PredFlags & LogUpdatePredFlag; #if defined(YAPOR) || defined(THREADS) dynamic = CurrentPred->PredFlags & DynamicPredFlag; #endif if (assembling != ASSEMBLING_INDEX) { Clause *cl_p = (Clause *)code_p; if (pass_no) { cl_p->u.ClValue = c_store; cl_p->ClFlags = c_mask; if (log_update) cl_p->ClFlags |= LogUpdMask; cl_p->u2.ClExt = NULL; cl_p->Owner = YapConsultingFile(); } code_p = (yamop *)(cl_p->ClCode); IPredArity = cpc->rnd2; /* number of args */ #if defined(YAPOR) || defined(THREADS) if ((dynamic||log_update) && pass_no) { INIT_LOCK(cl_p->ClLock); INIT_CLREF_COUNT(cl_p); } #endif #ifdef YAPOR entry_code = code_p; a_try(TRYOP(_try_me, _try_me0), 0, IPredArity, 1, 0); #else a_try(TRYOP(_try_me, _try_me0), 0, IPredArity); #endif /* YAPOR */ } else { Clause *cl_p = (Clause *)code_p; if (pass_no) { cl_p->u.ClValue = TermNil; if (log_update) { cl_p->u2.ClUse = 0; cl_p->ClFlags = LogUpdatePredFlag|IndexedPredFlag|IndexMask; } else { cl_p->u2.ClExt = NULL; cl_p->ClFlags = c_mask|IndexMask; } cl_p->Owner = CurrentPred->OwnerFile; } code_p = (yamop *)(cl_p->ClCode); #if defined(YAPOR) || defined(THREADS) if ((dynamic||log_update) && pass_no) { INIT_LOCK(cl_p->ClLock); INIT_CLREF_COUNT(cl_p); } #endif #ifdef YAPOR entry_code = code_p; #endif } while (cpc) { switch ((int) cpc->op) { #ifdef YAPOR case sync_op: a_try(_sync, cpc->rnd1, cpc->rnd2, 1, Zero); break; #endif /* YAPOR */ #ifdef TABLING case table_new_answer_op: a_n(_table_new_answer, (int) cpc->rnd2); break; #endif /* TABLING */ #ifdef SFUNC case get_s_f_op: a_rf(_get_s_f); break; case put_s_f_op: a_rf(_put_s_f); break; case unify_s_f_op: a_d(_unify_s_f); break; case write_s_f_op: a_f(_write_s_f); break; case unify_s_var_op: a_vsf(_unify_s_xvar); break; case write_s_var_op: a_vsf(_write_s_xvar); break; case unify_s_val_op: a_vsf(_unify_s_xval); break; case write_s_val_op: a_vsf(_write_s_xval); break; case unify_s_a_op: a_asf(_unify_s_a); break; case write_s_a_op: a_asf(_write_s_a); break; case get_s_end_op: a_n(_get_s_end, Unsigned(0)); break; case put_s_end_op: a_n(_put_s_end, Unsigned(0)); break; case unify_s_end_op: a_n(_write_s_end, Unsigned(0)); break; case write_s_end_op: a_n(_write_s_end, Unsigned(0)); break; #endif case get_var_op: a_vr(_get_x_var); break; case put_var_op: a_vr(_put_x_var); break; case get_val_op: a_vr(_get_x_val); break; case put_val_op: a_vr(_put_x_val); break; case get_num_op: case get_atom_op: a_rc(_get_atom); break; case get_float_op: a_rb(_get_float); break; case get_longint_op: a_rb(_get_longint); break; case get_bigint_op: a_rb(_get_bigint); break; case put_num_op: case put_atom_op: a_rc(_put_atom); break; case put_float_op: case put_longint_op: case put_bigint_op: a_rb(_put_atom); break; case get_list_op: a_glist(); break; case put_list_op: a_r(_put_list); break; case get_struct_op: a_rf(_get_struct); break; case put_struct_op: a_rf(_put_struct); break; case put_unsafe_op: a_vr((op_numbers)((int)_put_unsafe - 1)); break; case unify_var_op: a_uvar(); break; case unify_last_var_op: a_uv(_unify_l_x_var, _unify_l_x_var_write); break; case write_var_op: a_wvar(); break; case unify_local_op: a_uv(_unify_x_loc, _unify_x_loc_write); break; case unify_val_op: a_uv(_unify_x_val, _unify_x_val_write); break; case unify_last_local_op: a_uv(_unify_l_x_loc, _unify_l_x_loc_write); break; case unify_last_val_op: a_uv(_unify_l_x_val, _unify_l_x_val_write); break; case write_local_op: a_v(_write_x_loc); break; case write_val_op: a_v(_write_x_val); break; case unify_num_op: case unify_atom_op: a_ucons(unify_atom_op); break; case unify_float_op: a_ublob(_unify_float, _unify_atom_write); break; case unify_longint_op: a_ublob(_unify_longint, _unify_atom_write); break; case unify_bigint_op: a_ublob(_unify_bigint, _unify_atom_write); break; case unify_last_num_op: case unify_last_atom_op: a_uc(_unify_l_atom, _unify_l_atom_write); break; case unify_last_float_op: a_ublob(_unify_l_float, _unify_l_atom_write); break; case unify_last_longint_op: a_ublob(_unify_l_longint, _unify_l_atom_write); break; case unify_last_bigint_op: a_ublob(_unify_l_bigint, _unify_l_atom_write); break; case write_num_op: case write_atom_op: a_ucons(write_atom_op); break; case write_float_op: case write_longint_op: case write_bigint_op: a_blob(_write_atom); break; case unify_list_op: a_ue(_unify_list, _unify_list_write); break; case unify_last_list_op: a_ue(_unify_l_list, _unify_l_list_write); break; case write_list_op: a_e(_write_list); break; case write_last_list_op: a_e(_write_l_list); break; case unify_struct_op: a_uf(_unify_struct, _unify_struct_write); break; case unify_last_struct_op: a_uf(_unify_l_struc, _unify_l_struc_write); break; case write_struct_op: a_f(_write_struct); break; case write_last_struct_op: a_f(_write_l_struc); break; case save_b_op: case patch_b_op: a_v(_save_b_x); break; case comit_b_op: a_v(_comit_b_x); #ifdef YAPOR if (pass_no) PUT_YAMOP_CUT(entry_code); #endif /* YAPOR */ break; case save_pair_op: a_uv(_save_pair_x, _save_pair_x_write); break; case save_appl_op: a_uv(_save_appl_x, _save_appl_x_write); break; case fail_op: a_e(_op_fail); break; case cut_op: a_cut(); #ifdef YAPOR if (pass_no) PUT_YAMOP_CUT(entry_code); #endif /* YAPOR */ break; case cutexit_op: a_cut(); a_e(_procceed); #ifdef YAPOR if (pass_no) PUT_YAMOP_CUT(entry_code); #endif /* YAPOR */ break; case allocate_op: alloc_found = 2; break; case deallocate_op: a_deallocate(); break; case tryme_op: TRYCODE(_try_me, _try_me0); break; case retryme_op: TRYCODE(_retry_me, _retry_me0); break; case trustme_op: TRYCODE(_trust_me, _trust_me0); break; case try_op: if (log_update) a_cl(_try_logical_pred); a_gl(_try_clause); break; case retry_op: a_gl(_retry); break; case trust_op: if (log_update) a_cl(_trust_logical_pred); a_gl(_trust); break; case tryin_op: a_igl(_try_in); break; case retryin_op: a_gl(_retry); break; case trustin_op: a_gl_in(_trust_in); break; case tryf_op: if (log_update) a_cl(_try_logical_pred); a_gl(_try_clause); break; case retryf_op: a_gl(_retry_first); break; case trustf_op: if (log_update) a_cl(_trust_logical_pred); a_gl(_trust_first); break; case tryfin_op: a_igl(_try_in); break; case retryfin_op: a_gl(_retry_first); break; case trustfin_op: a_gl_in(_trust_first_in); break; case tryt_op: if (log_update) a_cl(_try_logical_pred); a_gl(_try_clause); break; case retryt_op: a_gl(_retry_tail); break; case trustt_op: if (log_update) a_cl(_trust_logical_pred); a_gl(_trust_tail); break; case trytin_op: a_igl(_try_in); break; case retrytin_op: a_gl(_retry_tail); break; case trusttin_op: a_gl_in(_trust_tail_in); break; case tryh_op: if (log_update) a_cl(_try_logical_pred); a_gl(_try_clause); break; case retryh_op: a_gl(_retry_head); break; case trusth_op: if (log_update) a_cl(_trust_logical_pred); a_gl(_trust_head); break; case tryhin_op: a_igl(_try_in); break; case retryhin_op: a_gl(_retry_head); break; case trusthin_op: a_gl_in(_trust_head_in); break; case trylf_op: /* now that we don't need to save the arguments this is just a simple retry */ a_gl(_retry); break; /* ibd */ case trylh_op: a_gl(_retry); break; case jump_op: a_l(_jump); break; case restore_tmps_op: a_l(_move_back); break; case restore_tmps_and_skip_op: a_l(_skip); break; case procceed_op: a_e(_procceed); break; case call_op: a_p(_call); break; case execute_op: a_p(_execute); break; case safe_call_op: a_p(_call); break; case label_op: if (!ystop_found && cpc->nextInst != NULL && cpc->nextInst->op == mark_initialised_pvars_op) { ystop_found = TRUE; a_e(_Ystop); } if (!pass_no) { if (CellPtr(label_offset+cpc->rnd1) > ASP-256) { save_machine_regs(); longjmp(CompilerBotch,3); } label_offset[cpc->rnd1] = (CELL) code_p; } /* reset dealloc_found in case there was a branch */ dealloc_found = FALSE; break; case pop_op: if (cpc->rnd1 == 1) a_e(_pop); else { a_n(_pop_n, 2 * CELLSIZE * (cpc->rnd1 - 1)); } break; case either_op: check_alloc(); #ifdef YAPOR if (pass_no) either_inst[either_cont++] = code_p; a_either(_either, -Signed(RealEnvSize) - CELLSIZE * cpc->rnd2, Unsigned(code_addr) + label_offset[cpc->rnd1], 0, 0); #else a_either(_either, -Signed(RealEnvSize) - CELLSIZE * cpc->rnd2, Unsigned(code_addr) + label_offset[cpc->rnd1]); #endif /* YAPOR */ break; case orelse_op: #ifdef YAPOR if (pass_no) either_inst[either_cont++] = code_p; a_either(_or_else, -Signed(RealEnvSize) - CELLSIZE * cpc->rnd2, Unsigned(code_addr) + label_offset[cpc->rnd1], 0, 0); #else a_either(_or_else, -Signed(RealEnvSize) - CELLSIZE * cpc->rnd2, Unsigned(code_addr) + label_offset[cpc->rnd1]); #endif /* YAPOR */ dealloc_found = FALSE; break; case orlast_op: #ifdef YAPOR if (pass_no) either_inst[either_cont++] = code_p; a_either(_or_last, 0, 0, 0, 0); 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 a_e(_or_last); #endif /* YAPOR */ dealloc_found = FALSE; break; case jump_v_op: a_igl(_jump_if_var); break; case switch_t_op: a_4sw(_switch_on_type); break; case switch_nv_op: a_3sw(_switch_on_nonv); break; case switch_l_op: a_3sws(_switch_last); break; case switch_h_op: a_4sw(_switch_on_head); break; case switch_lnl_op: #if USE_THREADED_CODE a_4_lsw(_switch_list_nl); #else a_4sw(_switch_list_nl); #endif break; case switch_nvl_op: a_3sw(_switch_nv_list); break; case switch_ll_op: a_3sws(_switch_l_list); break; case switch_c_op: a_hx(_switch_on_cons); break; case switch_f_op: a_hx(_switch_on_func); break; case if_c_op: a_if(_if_cons); break; case if_f_op: a_if(_if_func); break; case go_c_op: a_go(_go_on_cons); break; case go_f_op: a_go(_go_on_func); break; case if_not_op: a_go(_if_not_then); break; case mark_initialised_pvars_op: a_bmap(); break; case mark_live_regs_op: a_bregs(); break; case comit_opt_op: comit_lab = cpc->rnd1; break; case fetch_args_vv_op: a_fetch_vv(); break; case fetch_args_vc_op: a_fetch_vc(); break; case fetch_args_cv_op: a_fetch_cv(); break; case f_val_op: a_f2(FALSE); break; case f_var_op: a_f2(TRUE); break; case enter_profiling_op: a_pl(_enter_profiling, (PredEntry *)(cpc->rnd1)); break; case retry_profiled_op: a_pl(_retry_profiled, (PredEntry *)(cpc->rnd1)); break; case fetch_args_for_bccall: if (cpc->nextInst->op != bccall_op) { Error(SYSTEM_ERROR, TermNil, "compiling binary test", (int) cpc->op); save_machine_regs(); longjmp(CompilerBotch, 1); } a_bfunc(cpc->nextInst->rnd2); break; case blob_op: /* install a blob */ copy_blob(); break; case empty_call_op: /* create an empty call */ a_empty_call(); break; case push_or_op: case pop_or_op: case pushpop_or_op: case nop_op: case name_op: break; default: Error(SYSTEM_ERROR, TermNil, "instruction %d found while assembling", (int) cpc->op); save_machine_regs(); longjmp(CompilerBotch, 1); } cpc = cpc->nextInst; } if (!ystop_found) a_e(_Ystop); } CODEADDR assemble(int mode) { /* * 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 */ int *workspace = (int *)freep; CELL size; code_addr = NIL; assembling = mode; label_offset = workspace; pass_no = 0; asm_error = FALSE; do_pass(); if (asm_error) { Error_TYPE = SYSTEM_ERROR; ErrorMessage = "internal assembler error"; return (NIL); } pass_no = 1; YAPEnterCriticalSection(); #ifdef KEEP_ENTRY_AGE { size = (CELL)NEXTOP(NEXTOP(NEXTOP((yamop *)(((Clause *)NULL)->ClCode),ld),sla),e); if ((CELL)code_p > size) size = (CELL)code_p; } #else size = (CELL)code_p; #endif while ((code_addr = (CODEADDR) AllocCodeSpace(size)) == NULL) { growheap(TRUE); } do_pass(); YAPLeaveCriticalSection(); { Clause *cl = (Clause *)code_addr; /* lcc, why? */ return((CODEADDR)(cl->ClCode)); } }