fe_seg_id CgSegIdData( SYMBOL sym, SEGID_CONTROL control )
/********************************************************/
{
fe_seg_id id;
type_flag flags;
if( SymIsAutomatic( sym ) ) {
id = cgSegIdAuto( sym );
} else if( SymIsFunction( sym ) ) {
id = CgSegIdFunction( sym );
} else {
id = sym->segid;
if( id == SEG_NULL ) {
TypeGetActualFlags( sym->sym_type, &flags );
if( flags & TF1_THREAD ) {
id = cgSegIdThread( sym, flags );
} else if( flags & TF1_BASED ) {
id = cgSegIdBased( sym, flags );
#if _CPU == _AXP || COMP_CFG_COFF == 1
} else if( SymIsComdatData( sym ) ) {
id = SegmentAddComdatData( sym, control );
#endif
} else {
id = cgSegIdVariable( sym, flags, control );
}
sym->segid = id;
}
SegmentMarkUsed( id );
}
return( id );
}
TYPE TypeAutoDefault( // ADD NEAR QUALIFIER FOR AUTO SYMBOL
TYPE type, // - a type
PTREE expr ) // - possible PT_SYMBOL of SC_AUTO
{
#if 0
if( PtreeOpFlags( expr ) & PTO_RVALUE ) {
type = augmentWithNear( type );
} else if( expr->op == PT_SYMBOL ) {
#else
if( expr->op == PT_SYMBOL ) {
#endif
SYMBOL sym = expr->u.symcg.symbol;
if( sym->id == SC_AUTO ) {
type_flag flags;
TypeGetActualFlags( sym->sym_type, &flags );
if( 0 == ( flags & TF1_MEM_MODEL ) ) {
type = augmentWithNear( type );
}
}
}
return( type );
}
TYPE TypeForLvalue // GET TYPE FOR LVALUE
( PTREE expr ) // - lvalue expression
{
TYPE type_expr; // - expression type
TYPE type_lv; // - type of LVALUE
type_expr = NodeType( expr );
type_lv = TypeReference( type_expr );
DbgVerify( type_lv != NULL, "TypeForLvalue -- not lvalue" );
return( type_lv );
}
fe_seg_id CgSegIdFunction( SYMBOL sym )
/*************************************/
{
fe_seg_id id;
type_flag flags;
id = sym->segid;
if( id == SEG_NULL ) {
if( SymIsInitialized( sym ) ) {
// defined in this compilation unit
id = SegmentForDefinedFunc( sym );
} else {
TypeGetActualFlags( sym->sym_type, &flags );
if( flags & TF1_FAR ) {
id = SegmentImport();
} else if( IsBigCode() ) {
id = SegmentImport();
} else {
id = SegmentDefaultCode();
}
}
sym->segid = id;
}
return( id );
}
TYPE TypeMergeForMember( // CREATE MERGED TYPE FOR A MEMBER
TYPE owner, // - type on left (.), type pointed at (->)
TYPE member ) // - type for member
{
type_flag owner_flags; // - modifier flags for owner
type_flag member_flags; // - modifier flags for member
type_flag result_flags; // - modifier flags for result
void *owner_base; // - base for owner
TypeModExtract( owner
, &owner_flags
, &owner_base
, TC1_NOT_ENUM_CHAR );
member = TypeGetActualFlags( member, &member_flags );
if( owner_flags & TF1_CONST ) {
if( member_flags & TF1_MUTABLE ) {
owner_flags &= ~TF1_CONST;
}
}
result_flags = owner_flags | member_flags;
if( result_flags != TF1_NULL ) {
member = MakeBasedModifierOf( member, result_flags, owner_base );
}
return( member );
}
static TYPE augmentWithNear( // AUGMENT TYPE WITH TF1_NEAR, IF REQ'D
TYPE type ) // - type to be augmented
{
type_flag flags; // - existing flags
TypeGetActualFlags( type, &flags );
if( 0 == ( flags & TF1_MEM_MODEL ) ) {
type = MakeModifiedType( type, TF1_NEAR );
}
return( type );
}
bool TypeTruncByMemModel( // TEST TYPE TRUNCATION FOR DEF. MEMORY MODEL
TYPE type ) // - the type
{
bool ok; // - true ==> type matches default mem. model
type_flag flags; // - flags for the type
type_flag mflags; // - memory-model flags for the type
type = TypeGetActualFlags( type, &flags );
mflags = flags & TF1_MEM_MODEL;
if( 0 == mflags ) {
ok = false;
} else {
if( type->id == TYP_FUNCTION ) {
ok = ( !IsBigCode() && (TF1_NEAR & mflags) == 0 );
} else {
ok = ( !IsBigData() && (TF1_NEAR & mflags) == 0 );
}
}
return( ok );
}
bool PtrCnvInfo( // FILL IN PTR-CONVERSION INFORMATION
TYPE ptr_src, // - source type
TYPE ptr_tgt, // - target pointer type
PTRCNV* info ) // - pointer-conversion information
{
bool ok; // - return: true ==> can convert trivially
bool first_level; // - true ==> at first level
bool const_always; // - true ==> const on all preceding levels
TYPE orig_src; // - original src type
info->converts = false;
info->to_base = false;
info->to_derived = false;
info->to_void = false;
info->ptr_integral_ext = false;
info->cv_err_0 = false;
info->reint_cast_ok = false;
orig_src = ptr_src;
ptr_src = TypePointedAtModified( ptr_src );
ptr_tgt = TypePointedAtModified( ptr_tgt );
if( ptr_src == NULL ) {
info->pted_src = NULL;
info->flags_src = 0;
ptr_tgt = TypeGetActualFlags( ptr_tgt, &info->flags_tgt );
info->pted_tgt = ptr_tgt;
if( ptr_tgt->id == TYP_VOID ) {
info->to_void = true;
}
if( NULL != orig_src && IntegralType( orig_src ) ) {
info->reint_cast_ok = true;
}
ok = false;
} else {
first_level = true;
const_always = true;
info->reint_cast_ok = true;
for( ; ; ) {
type_flag flags_src; // source flags
type_flag flags_tgt; // target flags
type_flag cv_src; // source CV flags
type_flag cv_tgt; // target CV flags
ptr_src = TypeGetActualFlags( ptr_src, &flags_src );
ptr_tgt = TypeGetActualFlags( ptr_tgt, &flags_tgt );
cv_src = flags_src & TF1_CV_MASK;
cv_tgt = flags_tgt & TF1_CV_MASK;
if( cv_src != ( cv_tgt & cv_src ) ) { // test cv-containment
if( first_level ) {
info->cv_err_0 = true; // - diagnose elsewhere
} else {
ok = false;
break;
}
}
if( first_level ) {
TYPE cl_src; // class for source
TYPE cl_tgt; // class for target
ok = true;
info->pted_src = ptr_src;
info->pted_tgt = ptr_tgt;
info->flags_src = flags_src;
info->flags_tgt = flags_tgt;
cl_src = StructType( ptr_src );
if( ptr_tgt->id == TYP_VOID ) {
info->to_void = true;
// ok = (ptr_src == TYP_VOID);
// break;
} else if( NULL != cl_src ) {
cl_tgt = StructType( ptr_tgt );
if( NULL != cl_tgt
&& cl_tgt != cl_src ) {
if( TypeDerived( ptr_src, ptr_tgt ) ) {
info->to_base = true;
ok = false;
// break;
} else if( TypeDerived( ptr_tgt, ptr_src ) ) {
info->to_derived = true;
ok = false;
// break;
}
}
} else if( ( ptr_src->id != ptr_tgt->id )
&& IntegralType( ptr_src )
&& IntegralType( ptr_tgt )
&& ( CgMemorySize( ptr_src ) == CgMemorySize( ptr_tgt ) ) ) {
info->ptr_integral_ext = true;
}
if( !ok ) {
if( info->cv_err_0 ) {
info->reint_cast_ok = false;
}
break;
}
first_level = false;
}
if( cv_tgt != cv_src ) { // test const'ed to here
if( ! const_always ) {
info->reint_cast_ok = false;
ok = false;
break;
}
}
if( (cv_tgt & TF1_CONST) == 0 ) {
const_always = false;
}
if( ptr_src == ptr_tgt ) {
ok = true;
break;
}
if( TYP_FUNCTION == ptr_src->id
|| TYP_FUNCTION == ptr_tgt->id ) {
ok = TypeCompareExclude( ptr_src
, ptr_tgt
, TC1_FUN_LINKAGE |
TC1_NOT_ENUM_CHAR );
break;
}
ptr_src = TypePointedAtModified( ptr_src );
ptr_tgt = TypePointedAtModified( ptr_tgt );
if( NULL == ptr_src ) {
if( NULL != ptr_tgt
&& NULL != FunctionDeclarationType( ptr_tgt ) ) {
info->reint_cast_ok = false;
}
ok = false;
break;
}
if( NULL == ptr_tgt ) {
ok = false;
break;
}
}
}
return( ok );
}
PTREE AnalyseCall( // ANALYSIS FOR CALL
PTREE expr, // - call expression
CALL_DIAG *diagnostic ) // - diagnostics used for function problems
{
PTREE *r_args; // - reference( arguments )
PTREE *r_func; // - reference( function )
PTREE *ptlist; // - nodes for arguments
PTREE left; // - left operand ( the function )
PTREE right; // - right operand ( the arguments )
PTREE this_node; // - node for "this" computation
PTREE deref_args; // - member pointer dereference args
PTREE last_arg; // - last argument
PTREE static_fn_this; // - "this" for a static member
PTREE templ_args; // - explicit template arguments
SYMBOL sym; // - function symbol
SYMBOL caller_sym; // - function that is doing the call
TYPE type; // - temporary type
TYPE fn_type; // - function type
type_flag fn_mod; // - function modifier flags
unsigned count; // - # args, caller
arg_list *alist; // - arg_list for caller
intrinsic_mapping *intr_map;// - mapping for intrinsic function
SEARCH_RESULT *result; // - searching result
boolean membptr_deref; // - TRUE ==> member pointer dereference
boolean has_ellipsis; // - TRUE ==> ellipsis in argument list
boolean virtual_call; // - TRUE ==> virtual call
TEMP_PT_LIST default_list; // - default PTREE list
TEMP_ARG_LIST default_args; // - default arg_list
FNOV_DIAG fnov_diag; // - diagnosis information;
r_args = PTreeRefRight( expr );
last_arg = *r_args;
right = NodeReverseArgs( &count, last_arg );
*r_args = right;
r_func = PTreeRefLeft( expr );
left = *r_func;
membptr_deref = FALSE;
this_node = NULL;
intr_map = NULL;
static_fn_this = NULL;
virtual_call = FALSE;
switch( left->cgop ) {
case CO_DOT:
case CO_ARROW:
this_node = left->u.subtree[0];
left->u.subtree[0] = NULL;
left = NodePruneTop( left );
*r_func = left;
r_func = PTreeRefLeft( expr );
left = *r_func;
if( ( left->op == PT_ID ) && ( left->cgop == CO_NAME_DTOR ) ) {
/* dtor of a non-class type */
left = NodePruneTop( *r_func );
/* NYI: verify dtor call has no arguments */
expr->u.subtree[0] = NULL;
NodeFreeDupedExpr( expr );
expr = NodeConvert( GetBasicType( TYP_VOID ), this_node );
expr = NodeComma( expr, left );
return( expr );
}
break;
case CO_CALL_EXEC_IND:
if( left->flags & PTF_CALLED_ONLY ) {
/* member pointer dereference being called */
deref_args = left->u.subtree[1];
this_node = NodeDupExpr( &(deref_args->u.subtree[1]) );
membptr_deref = TRUE;
}
break;
}
alist = ArgListTempAlloc( &default_args, count );
ptlist = PtListAlloc( default_list, count );
NodeBuildArgList( alist, ptlist, right, count );
if( this_node == NULL ) {
alist->qualifier = FunctionThisQualifier();
} else {
alist->qualifier = BaseTypeClassFlags( NodeType( this_node ) );
}
if( NodeIsBinaryOp( left, CO_TEMPLATE ) ) {
DbgAssert( left->u.subtree[0]->op == PT_SYMBOL );
templ_args = left->u.subtree[1];
left->u.subtree[1] = NULL;
left = NodePruneTop( left );
*r_func = left;
r_func = PTreeRefLeft( expr );
left = *r_func;
} else {
templ_args = NULL;
}
if( left->op == PT_SYMBOL ) {
FNOV_RESULT ovret;
SYMBOL orig; // - original symbol
sym = left->u.symcg.symbol;
orig = sym;
if( left->cgop == CO_NAME_CONVERT ) {
ovret = UdcOverloadedDiag( &sym
, left->u.symcg.result
, sym
, SymFuncReturnType( sym )
, alist->qualifier
, &fnov_diag );
} else {
ovret = FuncOverloadedDiag( &sym
, left->u.symcg.result
, sym
, alist
, ptlist
, templ_args
, &fnov_diag );
}
switch( ovret ) {
case FNOV_AMBIGUOUS :
CallDiagAmbiguous( expr, diagnostic->msg_ambiguous, &fnov_diag );
NodeFreeDupedExpr( this_node );
ArgListTempFree( alist, count );
PtListFree( ptlist, count );
return( expr );
case FNOV_NO_MATCH :
if( this_node == NULL ) {
if( SymIsThisFuncMember( orig ) ) {
this_node = NodeThisCopyLocation( left );
}
}
if( this_node != NULL ) {
if( ( ! SymIsCtor( orig ) )
&&( ! SymIsDtor( orig ) )
&&( CNV_OK != AnalysePtrCV
( this_node
, TypeThisSymbol( orig
, this_node->flags & PTF_LVALUE )
, NodeType( this_node )
, CNV_FUNC_THIS ) ) ) {
PTreeErrorNode( expr );
InfSymbolDeclaration( orig );
NodeFreeDupedExpr( this_node );
ArgListTempFree( alist, count );
PtListFree( ptlist, count );
return( expr );
}
}
CallDiagNoMatch( expr
, diagnostic->msg_no_match_one
, diagnostic->msg_no_match_many
, this_node
, orig
, &fnov_diag );
NodeFreeDupedExpr( this_node );
ArgListTempFree( alist, count );
PtListFree( ptlist, count );
return( expr );
}
FnovFreeDiag( &fnov_diag );
left->u.symcg.symbol = sym;
result = left->u.symcg.result;
if( this_node == NULL ) {
if( SymIsThisFuncMember( sym ) ) {
if( result->use_this ) {
this_node = NodeThisCopyLocation( left );
if( this_node == NULL ) {
PTreeErrorExpr( expr, ERR_INVALID_NONSTATIC_ACCESS );
InfSymbolDeclaration( sym );
ArgListTempFree( alist, count );
PtListFree( ptlist, count );
return( expr );
}
} else {
PTreeErrorExpr( expr, ERR_BARE_FUNCTION_ACCESS );
InfSymbolDeclaration( sym );
ArgListTempFree( alist, count );
PtListFree( ptlist, count );
return( expr );
}
}
}
if( ! AnalyseSymbolAccess( expr, left, this_node, &diagAccess ) ) {
NodeFreeDupedExpr( this_node );
ArgListTempFree( alist, count );
PtListFree( ptlist, count );
return( expr );
}
type = sym->sym_type;
fn_type = TypeGetActualFlags( type, &fn_mod );
if( fn_type->flag & TF1_INTRINSIC ) {
intr_map = intrinsicMapping( sym );
if( intr_map == NULL ) {
outputCallTriggeredWarning( expr, sym );
}
}
if( fn_mod & TF1_FAR16 ) {
/* we are calling a far16 function */
caller_sym = ScopeFunctionInProgress();
caller_sym->flag |= SF_FAR16_CALLER;
}
left->type = type;
if( this_node == NULL ) {
if( SymIsThisFuncMember( sym ) ) {
this_node = NodeThisCopyLocation( left );
}
} else {
if( SymIsStaticFuncMember( sym ) ) {
#ifdef OLD_STATIC_MEMBER_ACCESS
NodeFreeDupedExpr( this_node );
#else
static_fn_this = this_node;
#endif
this_node = NULL;
}
}
if( this_node != NULL ) {
TYPE pted;
pted = TypePointedAtModified( this_node->type );
if( pted == NULL ) {
pted = this_node->type;
}
if( TypeTruncByMemModel( pted ) ) {
if( SymIsCtor( sym ) ) {
PTreeErrorExpr( this_node, ERR_CTOR_OBJ_MEM_MODEL );
} else if( SymIsDtor( sym ) ) {
PTreeErrorExpr( this_node, ERR_DTOR_OBJ_MEM_MODEL );
} else {
PTreeErrorExpr( this_node, ERR_THIS_OBJ_MEM_MODEL );
}
InfSymbolDeclaration( sym );
PTreeErrorNode( expr );
NodeFreeDupedExpr( this_node );
ArgListTempFree( alist, count );
PtListFree( ptlist, count );
NodeFreeDupedExpr( static_fn_this );
return( expr );
}
if( adjustForVirtualCall( &this_node, r_func, result ) ) {
virtual_call = TRUE;
expr->cgop = CO_CALL_EXEC_IND;
left = VfunSetupCall( expr->u.subtree[0] );
left = VfnDecorateCall( left, sym );
} else {
expr->cgop = CO_CALL_EXEC;
left = NodeUnaryCopy( CO_CALL_SETUP, expr->u.subtree[0] );
SymMarkRefed( sym );
}
} else {
NodeFreeSearchResult( left );
expr->cgop = CO_CALL_EXEC;
left = NodeUnaryCopy( CO_CALL_SETUP, expr->u.subtree[0] );
SymMarkRefed( sym );
}
} else {
if( ! membptr_deref ) {
/* i.e, p->foo() where foo is a pointer to a function */
NodeFreeDupedExpr( this_node );
this_node = NULL;
}
sym = NULL;
left = expr->u.subtree[0];
type = TypedefModifierRemove( left->type );
if( type->id == TYP_POINTER ) {
type = type->of;
}
fn_type = TypeGetActualFlags( type, &fn_mod );
if( fn_mod & TF1_FAR16 ) {
/* we are calling a far16 function */
caller_sym = ScopeFunctionInProgress();
caller_sym->flag |= SF_FAR16_CALLER;
}
if( ! TypeHasNumArgs( type, count ) ) {
PTreeErrorExpr( expr, ERR_PARM_COUNT_MISMATCH_POINTER );
CErr2p( INF_FUNCTION_TYPE, type );
ArgListTempFree( alist, count );
PtListFree( ptlist, count );
NodeFreeDupedExpr( static_fn_this );
return( expr );
}
expr->cgop = CO_CALL_EXEC_IND;
left = VfunSetupCall( left );
}
expr->u.subtree[0] = left;
#if _CPU == _AXP
if( intr_map != NULL && intr_map->cgop == CO_VASTART ) {
expr = convertVaStart( expr, alist, type );
} else {
expr = NodeConvertCallArgList( expr, count, type, &expr->u.subtree[1] );
}
#else
expr = NodeConvertCallArgList( expr, count, type, &expr->u.subtree[1] );
#endif
if( expr->op != PT_ERROR ) {
TYPE ftype; // - function type
PTREE cdtor; // - CDTOR node
PTREE callnode; // - call node
PTREE retnnode; // - return node (for struct return)
callnode = expr;
if( this_node == NULL ) {
cdtor = NULL;
} else {
this_node = NodeArg( this_node );
if( virtual_call ) {
this_node->flags |= PTF_ARG_THIS_VFUN;
}
if( sym != NULL && SymIsDtor( sym ) ) {
cdtor = NodeArg( NodeCDtorArg( DTOR_NULL ) );
} else {
cdtor = NULL;
}
}
ftype = type;
type = TypedefModifierRemove( type );
has_ellipsis = TypeHasEllipsisArg( type );
type = type->of;
{
TYPE tgt = TypeReference( type );
if( tgt == NULL ) {
expr->type = type;
} else {
expr->type = tgt;
expr->flags |= PTF_LVALUE;
}
}
if( sym != NULL ) {
if( ! AddDefaultArgs( sym, expr ) ) {
NodeFreeDupedExpr( cdtor );
NodeFreeDupedExpr( this_node );
ArgListTempFree( alist, count );
PtListFree( ptlist, count );
return expr;
}
}
if( NULL != TypeReference( type ) ) {
expr->flags |= PTF_LVALUE;
}
if( OMR_CLASS_REF == ObjModelArgument( type ) ) {
retnnode = NodeTemporary( type );
retnnode = PTreeCopySrcLocation( retnnode, expr );
} else {
retnnode = NULL;
}
expr = CallArgsArrange( ftype
, callnode
, callnode->u.subtree[1]
, this_node
, cdtor
, retnnode );
if( retnnode != NULL ) {
expr = NodeDtorExpr( expr, retnnode->u.symcg.symbol );
if( SymRequiresDtoring( retnnode->u.symcg.symbol ) ) {
expr = PtdCtoredExprType( expr, NULL, type );
}
}
type = StructType( type );
if( type != NULL && ! TypeDefined( type ) ) {
PTreeErrorExpr( expr, ERR_RETURN_UNDEFD_TYPE );
}
if( intr_map != NULL && expr->op != PT_ERROR ) {
#if _CPU == _AXP
if( intr_map->cgop == CO_VASTART ) {
expr = transformVaStart( expr );
} else {
expr = PTreeIntrinsicOperator( expr, intr_map->cgop );
}
#else
expr = PTreeIntrinsicOperator( expr, intr_map->cgop );
#endif
expr->flags |= PTF_MEANINGFUL | PTF_SIDE_EFF;
}
}
if( static_fn_this != NULL ) {
expr = NodeCommaIfSideEffect( static_fn_this, expr );
}
ArgListTempFree( alist, count );
PtListFree( ptlist, count );
return expr;
}
static boolean convertEllipsisArg(// CONVERT AN ELLIPSIS (...) ARGUMENT
PTREE arg ) // - argument
{
boolean retn; // - return: TRUE ==> ok
PTREE right; // - argument
PTREE afun; // - &[ function ]
TYPE type; // - node type
switch( NodeAddrOfFun( PTreeOpRight( arg ), &afun ) ) {
case ADDR_FN_MANY :
case ADDR_FN_MANY_USED :
PTreeErrorExpr( arg->u.subtree[1], ERR_ELLIPSE_ADDR_OVERLOAD );
retn = FALSE;
break;
default :
right = NodeRvalue( arg->u.subtree[1] );
arg->u.subtree[1] = right;
type = TypedefModifierRemove( right->type );
switch( type->id ) {
case TYP_CHAR :
case TYP_SCHAR :
case TYP_UCHAR :
case TYP_SSHORT :
case TYP_WCHAR :
case TYP_USHORT :
type = TypeUnArithResult( type );
right = NodeConvert( type, right );
arg_finish( right, arg );
retn = TRUE;
break;
case TYP_FLOAT :
type = GetBasicType( TYP_DOUBLE );
right = NodeConvert( type, right );
arg_finish( right, arg );
retn = TRUE;
break;
case TYP_ARRAY :
type = PointerTypeForArray( right->type );
right = NodeConvert( type, right );
arg_finish( right, arg );
retn = TRUE;
break;
case TYP_MEMBER_POINTER :
ConvertMembPtrConst( &arg->u.subtree[1] );
arg_fillout( arg );
retn = TRUE;
break;
case TYP_POINTER :
if( NULL == FunctionDeclarationType( type->of ) ) {
type_flag def_flags;
type_flag act_flags;
type_flag arg_flags;
TYPE base_type;
PTREE cnv;
base_type = TypeGetActualFlags( type->of, &arg_flags );
act_flags = arg_flags & TF1_MEM_MODEL;
def_flags = DefaultMemoryFlag( type->of );
if( ( ( def_flags & TF1_FAR )
&&( act_flags != TF1_HUGE )
&&( act_flags != TF1_FAR ) )
||( ( def_flags & TF1_HUGE )
&&( act_flags != TF1_HUGE ) )
) {
type = MakeModifiedType( base_type
, ( arg_flags
& ~TF1_MEM_MODEL )
| def_flags );
type = MakePointerTo( type );
cnv = CastImplicit( arg->u.subtree[1]
, type
, CNV_EXPR
, NULL );
arg->u.subtree[1] = cnv;
DbgVerify( PT_ERROR != cnv->op
, "convertEllipsisArg -- failed ptr.cnv" );
arg_fillout( arg );
retn = TRUE;
} else {
arg_fillout( arg );
retn = TRUE;
}
} else {
arg_fillout( arg );
retn = TRUE;
}
break;
case TYP_CLASS :
retn = passStructOnStack( arg, WARN_ELLIPSIS_CLASS_ARG );
break;
default :
arg_fillout( arg );
retn = TRUE;
break;
}
break;
}
return retn;
}
