cg_name SymValue( sym_id sym ) { //============================== // Generate value of a symbol. return( CGUnary( O_POINTS, SymAddr( sym ), F772CGType( sym ) ) ); }
call_handle InitCall( RTCODE rtn_id ) { //====================================== // Initialize a call to a runtime routine. sym_id sym; rt_rtn __FAR *rt_entry; byte typ; int name_len; char __FAR *ptr; rt_entry = &RtnTab[ rtn_id ]; sym = rt_entry->sym_ptr; if( sym == NULL ) { name_len = 0; ptr = rt_entry->name; while( *ptr != NULLCHAR ) { SymBuff[ name_len ] = *ptr; ++name_len; ++ptr; } sym = STAdd( SymBuff, name_len ); sym->u.ns.flags = SY_USAGE | SY_TYPE | SY_SUBPROGRAM | SY_FUNCTION | SY_RT_ROUTINE; if( rt_entry->typ == FT_NO_TYPE ) { sym->u.ns.u1.s.typ = FT_INTEGER_TARG; } else { sym->u.ns.u1.s.typ = rt_entry->typ; } sym->u.ns.xt.size = TypeSize( sym->u.ns.u1.s.typ ); sym->u.ns.u3.address = NULL; sym->u.ns.si.sp.u.imp_segid = AllocImpSegId(); rt_entry->sym_ptr = sym; } typ = F772CGType( sym ); return( CGInitCall( CGFEName( sym, typ ), typ, rt_entry->sym_ptr ) ); }
void FCSFCall( void ) { //================== // Call a statement function. sym_id sf; sym_id sf_arg; sym_id tmp; cg_type sf_type; cg_name arg_list; cg_name value; cg_cmplx z; obj_ptr curr_obj; sf = GetPtr(); arg_list = NULL; value = NULL; sf_type = 0; for(;;) { sf_arg = GetPtr(); if( sf_arg == NULL ) break; if( sf_arg->u.ns.u1.s.typ == FT_CHAR ) { value = Concat( 1, CGFEName( sf_arg, TY_CHAR ) ); } else { sf_type = F772CGType( sf_arg ); if( TypeCmplx( sf_arg->u.ns.u1.s.typ ) ) { XPopCmplx( &z, sf_type ); sf_type = CmplxBaseType( sf_type ); value = ImagPtr( SymAddr( sf_arg ), sf_type ); CGTrash( CGAssign( value, z.imagpart, sf_type ) ); value = CGFEName( sf_arg, sf_type ); value = CGAssign( value, z.realpart, sf_type ); } else { value = CGFEName( sf_arg, sf_type ); value = CGAssign( value, XPopValue( sf_type ), sf_type ); } } if( arg_list == NULL ) { arg_list = value; } else { arg_list = CGBinary( O_COMMA, arg_list, value, TY_DEFAULT ); } } if( sf->u.ns.u1.s.typ == FT_CHAR ) { tmp = GetPtr(); value = CGUnary( O_POINTS, CGFEName( tmp, TY_CHAR ), TY_CHAR ); value = CGAssign( CGFEName( sf, TY_CHAR ), value, TY_CHAR ); if( arg_list == NULL ) { arg_list = value; } else { arg_list = CGBinary( O_COMMA, arg_list, value, TY_DEFAULT ); } value = CGFEName( tmp, TY_CHAR ); } else { sf_type = F772CGType( sf ); if( !(OZOpts & OZOPT_O_INLINE) ) { value = CGUnary( O_POINTS, CGFEName( sf, sf_type ), sf_type ); } } if( OZOpts & OZOPT_O_INLINE ) { if( arg_list != NULL ) { CGTrash( arg_list ); } curr_obj = FCodeSeek( sf->u.ns.si.sf.u.sequence ); GetObjPtr(); FCodeSequence(); FCodeSeek( curr_obj ); if( sf->u.ns.u1.s.typ == FT_CHAR ) { CGTrash( XPop() ); XPush( value ); } else if( TypeCmplx( sf->u.ns.u1.s.typ ) ) { XPopCmplx( &z, sf_type ); sf_type = CmplxBaseType( sf_type ); XPush( TmpVal( MkTmp( z.imagpart, sf_type ), sf_type ) ); XPush( TmpVal( MkTmp( z.realpart, sf_type ), sf_type ) ); } else { XPush( TmpVal( MkTmp( XPopValue( sf_type ), sf_type ), sf_type ) ); } } else { value = CGWarp( arg_list, GetLabel( sf->u.ns.si.sf.u.location ), value ); // consider: y = f( a, f( b, c, d ), e ) // make sure that inner reference to f gets evaluated before we assign // arguments for outer reference value = CGEval( value ); if( TypeCmplx( sf->u.ns.u1.s.typ ) ) { SplitCmplx( TmpPtr( MkTmp( value, sf_type ), sf_type ), sf_type ); } else { XPush( value ); } RefStmtFunc( sf ); } }
cg_name SymIndex( sym_id sym, cg_name i ) { //========================================= // Get address of symbol plus an index. // Merges offset of symbols in common or equivalence with index so that // we don't get two run-time calls for huge pointer arithmetic. sym_id leader; cg_name addr; signed_32 offset; com_eq *ce_ext; cg_type p_type; bool data_reference; data_reference = TRUE; if( ( sym->ns.flags & SY_CLASS ) == SY_SUBPROGRAM ) { if( ( sym->ns.flags & SY_SUBPROG_TYPE ) == SY_STMT_FUNC ) { addr = CGFEName( sym, F772CGType( sym ) ); } else { addr = CGFEName( sym, TY_CODE_PTR ); if( sym->ns.flags & SY_SUB_PARM ) { addr = CGUnary( O_POINTS, addr, TY_CODE_PTR ); } data_reference = FALSE; } } else if( sym->ns.flags & SY_PS_ENTRY ) { // it's the shadow symbol for function return value if( CommonEntry == NULL ) { if( sym->ns.typ == FT_CHAR ) { if( Options & OPT_DESCRIPTOR ) { addr = CGFEName( ReturnValue, F772CGType( sym ) ); addr = CGUnary( O_POINTS, addr, TY_POINTER ); } else { addr = SubAltSCB( sym->ns.si.ms.sym ); } } else { addr = CGFEName( ReturnValue, F772CGType( sym ) ); } } else { if( (sym->ns.typ == FT_CHAR) && !(Options & OPT_DESCRIPTOR) ) { addr = SubAltSCB( CommonEntry ); } else { addr = CGUnary( O_POINTS, CGFEName( ReturnValue, TY_POINTER ), TY_POINTER ); } } } else if( sym->ns.flags & SY_SUB_PARM ) { // subprogram argument if( sym->ns.flags & SY_SUBSCRIPTED ) { p_type = ArrayPtrType( sym ); if( sym->ns.typ == FT_CHAR ) { addr = CGUnary( O_POINTS, CGFEName( sym, p_type ), p_type ); if( !(sym->ns.flags & SY_VALUE_PARM) ) { if( Options & OPT_DESCRIPTOR ) { addr = SCBPointer( addr ); } } } else { addr = CGUnary( O_POINTS, CGFEName( sym, p_type ), p_type ); } } else { p_type = TY_POINTER; if( sym->ns.typ == FT_CHAR ) { if( SCBRequired( sym ) ) { addr = VarAltSCB( sym ); } else { addr = CGUnary( O_POINTS, CGFEName( sym, p_type ), p_type ); } } else if( sym->ns.flags & SY_VALUE_PARM ) { p_type = F772CGType( sym ); if( TypeCmplx( sym->ns.typ ) ) { p_type = CmplxBaseType( p_type ); addr = CGFEName( sym, p_type ); XPush( CGUnary( O_POINTS, CGFEName( FindArgShadow( sym ), p_type ), p_type ) ); addr = CGUnary( O_POINTS, addr, p_type ); } else { addr = CGFEName( sym, p_type ); } } else { addr = CGUnary( O_POINTS, CGFEName( sym, p_type ), p_type ); } } } else if( sym->ns.flags & SY_IN_EQUIV ) { leader = sym; offset = 0; for(;;) { if( leader->ns.si.va.vi.ec_ext->ec_flags & LEADER ) break; offset += leader->ns.si.va.vi.ec_ext->offset; leader = leader->ns.si.va.vi.ec_ext->link_eqv; } if( leader->ns.si.va.vi.ec_ext->ec_flags & MEMBER_IN_COMMON ) { addr = CGFEName( leader->ns.si.va.vi.ec_ext->com_blk, F772CGType( sym ) ); offset += leader->ns.si.va.vi.ec_ext->offset; } else { sym_id shadow; shadow = FindEqSetShadow( leader ); if( shadow != NULL ) { addr = CGFEName( shadow, shadow->ns.si.ms.cg_typ ); offset -= leader->ns.si.va.vi.ec_ext->low; } else if( (leader->ns.typ == FT_CHAR) && !(leader->ns.flags & SY_SUBSCRIPTED) ) { addr = CGBackName( leader->ns.si.va.bck_hdl, F772CGType( sym ) ); } else { addr = CGFEName( leader, F772CGType( sym ) ); } } if( i != NULL ) { i = CGBinary( O_PLUS, i, CGInteger( offset, TY_INT_4 ), TY_INT_4 ); } else { i = CGInteger( offset, TY_INT_4 ); } addr = CGBinary( O_PLUS, addr, i, SymPtrType( sym ) ); if( (sym->ns.typ == FT_CHAR) && !(sym->ns.flags & SY_SUBSCRIPTED) ) { // tell code generator where storage pointed to by SCB is located addr = CGBinary( O_COMMA, addr, CGFEName( sym, F772CGType( sym ) ), TY_DEFAULT ); } i = NULL; } else if( ( sym->ns.typ == FT_CHAR ) && ( ( sym->ns.flags & SY_SUBSCRIPTED ) == 0 ) ) { // character variable, address of scb addr = CGFEName( sym, F772CGType( sym ) ); } else if( sym->ns.flags & SY_IN_COMMON ) { ce_ext = sym->ns.si.va.vi.ec_ext; if( i != NULL ) { i = CGBinary( O_PLUS, i, CGInteger( ce_ext->offset, TY_INT_4 ), TY_INT_4 ); } else { i = CGInteger( ce_ext->offset, TY_INT_4 ); } addr = CGBinary( O_PLUS, CGFEName( ce_ext->com_blk, F772CGType( sym ) ), i, SymPtrType( sym ) ); i = NULL; } else { addr = CGFEName( sym, F772CGType( sym ) ); if( ( sym->ns.flags & SY_SUBSCRIPTED ) && _Allocatable( sym ) ) { addr = CGUnary( O_POINTS, addr, ArrayPtrType( sym ) ); } } if( i != NULL ) { addr = CGBinary( O_PLUS, addr, i, SymPtrType( sym ) ); } if( ( OZOpts & OZOPT_O_VOLATILE ) && data_reference && ( ( sym->ns.typ >= FT_REAL ) && ( sym->ns.typ <= FT_XCOMPLEX ) ) ) { addr = CGVolatile( addr ); } else if( sym->ns.xflags & SY_VOLATILE ) { addr = CGVolatile( addr ); } return( addr ); }