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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#ifndef _ARRAY_H_
#define _ARRAY_H_
#define MAX_RANK 32 // If you make this bigger, you need to make MAX_CLASSNAME_LENGTH bigger too.
// if you have an 32 dim array with at least 2 elements in each dim that
// takes up 4Gig!!! Thus this is a reasonable maximum.
// (Note: at the time of the above comment, the rank was 32, and
// MAX_CLASSNAME_LENGTH was 256. I'm now changing MAX_CLASSNAME_LENGTH
// to 1024, but not changing MAX_RANK.)
class MethodTable;
#ifndef FEATURE_ARRAYSTUB_AS_IL
//======================================================================
// The following structures double as hash keys for the ArrayStubCache.
// Thus, it's imperative that there be no
// unused "pad" fields that contain unstable values.
#include <pshpack1.h>
// Specifies one index spec. This is used mostly to get the argument
// location done early when we still have a signature to work with.
struct ArrayOpIndexSpec
{
UINT32 m_idxloc; //if (m_fref) offset in ArgumentReg else base-frame offset into stack.
UINT32 m_lboundofs; //offset within array of lowerbound
UINT32 m_lengthofs; //offset within array of lengths
};
struct ArrayOpScript
{
enum
{
LOAD = 0,
STORE = 1,
LOADADDR = 2,
};
// FLAGS
enum
{
ISFPUTYPE = 0x01,
NEEDSWRITEBARRIER = 0x02,
HASRETVALBUFFER = 0x04,
NEEDSTYPECHECK = 0x10,
};
//
// these args have been reordered for better packing..
//
BYTE m_rank; // # of ArrayOpIndexSpec's
BYTE m_fHasLowerBounds; // if FALSE, all lowerbounds are 0
BYTE m_flags;
BYTE m_signed; // whether to sign-extend or zero-extend (for short types)
BYTE m_op; // STORE/LOAD/LOADADDR
BYTE m_pad1;
UINT16 m_fRetBufLoc; // if HASRETVALBUFFER, stack offset or argreg offset of retbuf ptr
UINT16 m_fValLoc; // for STORES, stack offset or argreg offset of value
UINT16 m_cbretpop; // how much to pop
UINT32 m_elemsize; // size in bytes of element.
UINT m_ofsoffirst; // offset of first element
INT m_typeParamOffs; // offset of type param
CGCDesc* m_gcDesc; // layout of GC stuff (0 if not needed)
// Array of ArrayOpIndexSpec's follow (one for each dimension).
const ArrayOpIndexSpec *GetArrayOpIndexSpecs() const
{
LIMITED_METHOD_CONTRACT;
return (const ArrayOpIndexSpec *)(1+ this);
}
UINT Length() const
{
LIMITED_METHOD_CONTRACT;
return sizeof(*this) + m_rank * sizeof(ArrayOpIndexSpec);
}
};
#include <poppack.h>
//======================================================================
#endif // FEATURE_ARRAYSTUB_AS_IL
Stub *GenerateArrayOpStub(ArrayMethodDesc* pMD);
BOOL IsImplicitInterfaceOfSZArray(MethodTable *pIntfMT);
BOOL ArraySupportsBizarreInterface(ArrayTypeDesc *pArrayTypeDesc, MethodTable *pInterfaceMT);
MethodDesc* GetActualImplementationForArrayGenericIListOrIReadOnlyListMethod(MethodDesc *pItfcMeth, TypeHandle theT);
#endif// _ARRAY_H_