366 lines
10 KiB
C++
366 lines
10 KiB
C++
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/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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Copyright (c) 1989-2000 Microsoft Corporation
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Module Name:
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ndrcls.cxx
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Abstract:
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Routines for the ndrcls code generation class.
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Notes:
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History:
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Aug-31-1993 VibhasC Created.
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----------------------------------------------------------------------------*/
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/****************************************************************************
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* include files
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***************************************************************************/
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#include "becls.hxx"
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#pragma hdrstop
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/****************************************************************************
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* local definitions
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***************************************************************************/
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/****************************************************************************
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* local data
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***************************************************************************/
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/****************************************************************************
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* externs
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***************************************************************************/
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/****************************************************************************/
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expr_node *
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CG_NDR::PresentedLengthExpression( CCB* )
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{
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expr_sizeof * pExpr = new expr_sizeof( GetType() );
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return pExpr;
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}
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expr_node *
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CG_NDR::PresentedSizeExpression( CCB* )
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{
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expr_sizeof * pExpr = new expr_sizeof( GetType() );
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return pExpr;
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}
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expr_node *
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CG_NDR::PresentedFirstExpression( CCB* )
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{
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return new expr_constant(0L);
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}
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/****************************************************************************
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utility functions
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****************************************************************************/
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CG_STATUS
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CG_NDR::SizeAnalysis( ANALYSIS_INFO * pAna )
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{
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pAna;
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return CG_OK;
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}
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CG_STATUS
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CG_NDR::MarshallAnalysis( ANALYSIS_INFO * pAna )
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{
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pAna;
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return CG_OK;
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}
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node_skl *
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CG_NDR::GetBasicType()
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{
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node_skl * pT = GetType();
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switch (pT->NodeKind())
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{
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case NODE_ID:
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case NODE_FIELD:
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case NODE_PARAM:
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case NODE_DEF:
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return pT->GetBasicType();
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}
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return pT;
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}
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CG_STATUS
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CG_NDR::RefCheckAnalysis(
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ANALYSIS_INFO * pAna )
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{
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CG_NDR * pC = (CG_NDR *)GetChild();
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if( pC )
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pC->RefCheckAnalysis( pAna );
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return CG_OK;
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}
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CG_STATUS
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CG_NDR::InLocalAnalysis(
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ANALYSIS_INFO * pAna )
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{
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CG_NDR * pC = (CG_NDR *)GetChild();
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if( pC )
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pC->InLocalAnalysis( pAna );
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return CG_OK;
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}
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CG_STATUS
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CG_NDR::S_GenInitInLocals(
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CCB * pCCB )
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{
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CG_NDR * pC = (CG_NDR *)GetChild();
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if( pC )
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pC->S_GenInitInLocals( pCCB );
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return CG_OK;
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}
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CG_STATUS
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CG_NDR::GenRefChecks(
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CCB * pCCB )
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{
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CG_NDR * pC = (CG_NDR *)GetChild();
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if( pC )
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pC->GenRefChecks( pCCB );
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return CG_OK;
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}
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extern CMD_ARG * pCommand;
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void
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CG_NDR::GetNdrParamAttributes( CCB *pCCB, PARAM_ATTRIBUTES *attributes)
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{
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CG_PARAM * pParam;
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CG_NDR * pChild;
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CG_PROC * pProc;
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pChild = (CG_NDR *) GetChild();
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if ( pChild && (pChild->GetCGID() == ID_CG_GENERIC_HDL) )
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pChild = (CG_NDR *) pChild->GetChild();
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pParam = (CG_PARAM *) pCCB->GetLastPlaceholderClass();
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pProc = (CG_PROC *) pCCB->GetCGNodeContext();
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if ( IsPipeOrPipeReference() )
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{
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// Pipe parameters are never sized.
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attributes->MustSize = 0;
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}
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else
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attributes->MustSize = (unsigned short) pParam->GetInterpreterMustSize();
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attributes->IsIn = (unsigned short) pParam->IsParamIn();
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attributes->IsOut = (unsigned short) pParam->IsParamOut();
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attributes->IsReturn = ( pParam->GetCGID() == ID_CG_RETURN )
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|| ( pProc->HasComplexReturnType()
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&& NULL == pParam->GetSibling() );
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attributes->IsPartialIgnore = pParam->IsParamPartialIgnore();
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attributes->IsForceAllocate = pParam->IsForceAllocate();
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attributes->IsBasetype = 0;
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// SAFEARRAY(FOO) is being generated as ID_CG_SAFEARRAY. It's in fact user
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// marshal on the wire.
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attributes->IsByValue =
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IsStruct() ||
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IsUnion() ||
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( GetCGID() == ID_CG_TRANSMIT_AS ) ||
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( GetCGID() == ID_CG_REPRESENT_AS ) ||
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( GetCGID() == ID_CG_USER_MARSHAL ) ||
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( GetCGID() == ID_CG_SAFEARRAY ) ||
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( GetCGID() == ID_CG_CS_TAG ) ;
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attributes->IsSimpleRef =
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(pParam->GetCGID() != ID_CG_RETURN) &&
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IsPointer() &&
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((CG_POINTER *)this)->IsBasicRefPointer();
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attributes->IsDontCallFreeInst = (unsigned short) pParam->GetDontCallFreeInst();
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attributes->IsPipe = (unsigned short) IsPipeOrPipeReference();
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attributes->SaveForAsyncFinish = (unsigned short) pParam->IsSaveForAsyncFinish();
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if ( (attributes->IsPipe) || (GetCGID() == ID_CG_CONTEXT_HDL) ||
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(IsPointer() && pChild && (pChild->GetCGID() == ID_CG_CONTEXT_HDL)))
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attributes->MustFree = 0;
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else
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attributes->MustFree = 1;
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attributes->ServerAllocSize = 0;
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if ( GetCGID() == ID_CG_PTR )
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{
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long Size = 0;
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(void)
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((CG_POINTER *)this)->InterpreterAllocatesOnStack( pCCB,
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pParam,
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&Size );
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attributes->ServerAllocSize = unsigned short(Size / 8);
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}
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//
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// Now make a final check for a simple ref pointer to a basetype and for
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// a ref pointer to pointer.
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//
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// We mark pointers to basetypes as being both a basetype and a simple
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// ref pointer. Kind of an anomoly, but it works out well in the
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// interpreter.
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//
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// For both of these cases the pointer must have no allocate attributes
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// and can not be a return value.
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//
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if (
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IsPointer() &&
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(((CG_POINTER *)this)->GetPtrType() == PTR_REF) &&
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! IS_ALLOCATE( ((CG_POINTER *)this)->GetAllocateDetails(),
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ALLOCATE_ALL_NODES ) &&
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! IS_ALLOCATE( ((CG_POINTER *)this)->GetAllocateDetails(),
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ALLOCATE_DONT_FREE ) &&
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(pParam->GetCGID() != ID_CG_RETURN)
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)
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{
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//
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// Now make sure it's a pointer to basetype and that it is either
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// [in] or [in,out] (in which case we use the buffer to hold it) or
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// that it is [out] and there is room for it on the interpreter's
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// stack. We don't mark enum16s as SimpleRef-Basetype because of
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// their special handling (i.e. wire size != memory size).
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//
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if ( ((CG_POINTER *)this)->IsPointerToBaseType() &&
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( pParam->IsParamIn() ||
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(((CG_POINTER *)this)->GetFormatAttr() & FC_ALLOCED_ON_STACK) ) )
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{
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if ( ((CG_BASETYPE *)pChild)->GetFormatChar() != FC_ENUM16 )
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{
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attributes->IsBasetype = 1;
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attributes->IsSimpleRef = 1;
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}
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attributes->MustFree = 0;
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}
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}
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}
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void
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CG_NDR::GenNdrParamDescription( CCB * pCCB )
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{
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FORMAT_STRING * pProcFormatString;
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PARAM_ATTRIBUTES Attributes;
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long FormatStringOffset;
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CG_PARAM * pParam;
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CG_NDR * pChild;
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pChild = (CG_NDR *) GetChild();
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if ( pChild && (pChild->GetCGID() == ID_CG_GENERIC_HDL) )
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pChild = (CG_NDR *) pChild->GetChild();
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pParam = (CG_PARAM *) pCCB->GetLastPlaceholderClass();
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pProcFormatString = pCCB->GetProcFormatString();
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// Attributes.
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GetNdrParamAttributes( pCCB, &Attributes );
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pProcFormatString->PushParamFlagsShort( *((short *)&Attributes) );
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// Stack offset as number of ints.
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pProcFormatString->PushUShortStackOffsetOrSize(
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pParam->GetStackOffset( pCCB, I386_STACK_SIZING ) );
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//
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// If we found a pointer to a basetype, make sure and emit the basetype's
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// param format.
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//
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if ( Attributes.IsSimpleRef && Attributes.IsBasetype )
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{
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pProcFormatString->PushFormatChar(
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((CG_BASETYPE *)pChild)->GetFormatChar() );
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pProcFormatString->PushByte( 0 );
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return;
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}
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if ( Attributes.IsSimpleRef )
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{
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CG_POINTER * pPointer;
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pPointer = (CG_POINTER *) this;
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switch ( pPointer->GetCGID() )
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{
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case ID_CG_STRING_PTR :
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if ( ((CG_STRING_POINTER *)pPointer)->IsStringableStruct() )
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FormatStringOffset = GetFormatStringOffset();
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else
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FormatStringOffset = pPointer->GetFormatStringOffset() + 2;
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break;
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case ID_CG_SIZE_STRING_PTR :
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if ( ((CG_STRING_POINTER *)pPointer)->IsStringableStruct() )
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FormatStringOffset = GetFormatStringOffset();
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else
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FormatStringOffset = pPointer->GetPointeeFormatStringOffset();
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break;
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case ID_CG_STRUCT_STRING_PTR :
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FormatStringOffset = GetFormatStringOffset();
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break;
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default :
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FormatStringOffset = pPointer->GetPointeeFormatStringOffset();
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break;
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}
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}
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else
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{
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FormatStringOffset = GetFormatStringOffset();
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}
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//
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// Push the offset in the type format string to the param's description.
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//
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pProcFormatString->PushShortTypeOffset( FormatStringOffset );
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}
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void
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CG_NDR::GenNdrParamDescriptionOld( CCB * pCCB )
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{
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FORMAT_STRING * pProcFormatString;
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CG_PARAM * pParam;
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long StackSize;
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long StackElem;
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pProcFormatString = pCCB->GetProcFormatString();
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pParam = (CG_PARAM *) pCCB->GetLastPlaceholderClass();
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if ( pCommand->Is64BitEnv() )
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StackElem = 8;
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else
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StackElem = 4;
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StackSize = pParam->GetStackSize();
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StackSize = (StackSize + StackElem - 1) & ~ (StackElem - 1);
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pProcFormatString->PushSmallStackSize( (char) (StackSize / StackElem) );
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//
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// Push the offset in the type format string to the param's description.
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//
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pProcFormatString->PushShortTypeOffset( GetFormatStringOffset() );
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}
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