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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.
#include "ildasmpch.h"
#include <metadata.h>
#include <utilcode.h>
#include "debugmacros.h"
#include "dasm_sz.h"
#include "ceeload.h"
extern PELoader *g_pPELoader;
unsigned SizeOfValueType(mdToken tk, IMDInternalImport* pImport)
{
unsigned ret = 0xFFFFFFFF;
if((TypeFromToken(tk)==mdtTypeDef)&&RidFromToken(tk)&&pImport)
{
DWORD dwAttrs;
mdToken tkExtends;
if (FAILED(pImport->GetTypeDefProps(tk, &dwAttrs, &tkExtends)))
{
return ret;
}
if(!(IsTdInterface(dwAttrs)||IsTdAbstract(dwAttrs)||IsTdImport(dwAttrs)))
{
mdToken tkField;
DWORD dwFieldAttrs;
unsigned uFieldSize;
ULONG ulPack=0,
ulSize = 0,
ulInstFieldSize = 0;
if (FAILED(pImport->GetClassPackSize(tk,&ulPack))) ulPack = 0;
if (FAILED(pImport->GetClassTotalSize(tk,&ulSize))) ulSize = 0;
if (IsTdExplicitLayout(dwAttrs))
{
MD_CLASS_LAYOUT hLayout;
if (SUCCEEDED(pImport->GetClassLayoutInit(tk,&hLayout)))
{
ULONG ulOffset;
while (SUCCEEDED(pImport->GetClassLayoutNext(&hLayout,&tkField,&ulOffset)) && RidFromToken(tkField))
{
if (FAILED(pImport->GetFieldDefProps(tkField, &dwFieldAttrs)))
{
break;
}
if (!(IsFdStatic(dwFieldAttrs)||IsFdLiteral(dwFieldAttrs)))
{
uFieldSize = SizeOfField(tkField,pImport);
if (uFieldSize == 0xFFFFFFFF) return uFieldSize;
uFieldSize += ulOffset;
if (uFieldSize > ulInstFieldSize) ulInstFieldSize = uFieldSize;
}
}
}
}
else
{
HENUMInternal hEnumField;
unsigned cFieldsMax = 0;
if (SUCCEEDED(pImport->EnumInit(mdtFieldDef, tk, &hEnumField)))
{
if ((cFieldsMax = pImport->EnumGetCount(&hEnumField)) != 0)
{
while (pImport->EnumNext(&hEnumField, &tkField) && RidFromToken(tkField))
{
if (FAILED(pImport->GetFieldDefProps(tkField, &dwFieldAttrs)))
{
break;
}
if (!IsFdStatic(dwFieldAttrs) && !IsFdLiteral(dwFieldAttrs))
{
uFieldSize = SizeOfField(tkField,pImport);
if (uFieldSize == 0xFFFFFFFF) return uFieldSize;
if (ulPack > 1)
{
ULONG ulDelta = ulInstFieldSize % ulPack;
if (ulDelta != 0) ulInstFieldSize += ulPack - ulDelta;
}
ulInstFieldSize += uFieldSize;
}
}
}
pImport->EnumClose(&hEnumField);
}
}
ret = (ulInstFieldSize > ulSize) ? ulInstFieldSize : ulSize;
if(ret == 0) ret = 1; // zero-sized value types automatically get 1 byte
}
}
return ret;
}
unsigned SizeOfField(mdToken tk, IMDInternalImport* pImport)
{
unsigned ret = 0xFFFFFFFF;
if((TypeFromToken(tk) == mdtFieldDef) && RidFromToken(tk) && pImport)
{
PCCOR_SIGNATURE pSig;
ULONG cSig;
if (FAILED(pImport->GetSigOfFieldDef(tk, &cSig, &pSig)))
{
return ret;
}
ret = SizeOfField(&pSig,cSig,pImport);
}
return ret;
}
unsigned SizeOfField(PCCOR_SIGNATURE *ppSig, ULONG cSig, IMDInternalImport* pImport)
{
unsigned ret = 0xFFFFFFFF;
if(ppSig && *ppSig && cSig && pImport)
{
unsigned callConv = CorSigUncompressData(*ppSig);
if (isCallConv(callConv, IMAGE_CEE_CS_CALLCONV_FIELD))
{
mdToken tk;
int typ;
BOOL Reiterate;
unsigned uElementNumber = 1;
PCCOR_SIGNATURE pSigStart = *ppSig;
PCCOR_SIGNATURE pSigEnd = *ppSig+cSig;
// Size of the pointer depends on bitness of the assembly
unsigned nSizeOfPointer = g_pPELoader->IsPE32() ? 4 : 8;
do {
Reiterate = FALSE;
switch(typ = *(*ppSig)++) {
case ELEMENT_TYPE_VOID :
return 0;
case ELEMENT_TYPE_I1 :
case ELEMENT_TYPE_U1 :
case ELEMENT_TYPE_BOOLEAN :
return uElementNumber;
case ELEMENT_TYPE_CHAR :
case ELEMENT_TYPE_I2 :
case ELEMENT_TYPE_U2 :
return (uElementNumber << 1);
case ELEMENT_TYPE_I4 :
case ELEMENT_TYPE_U4 :
case ELEMENT_TYPE_R4 :
return (uElementNumber << 2);
case ELEMENT_TYPE_I8 :
case ELEMENT_TYPE_U8 :
case ELEMENT_TYPE_R8 :
return (uElementNumber << 3);
case ELEMENT_TYPE_OBJECT :
case ELEMENT_TYPE_STRING :
case ELEMENT_TYPE_FNPTR :
case ELEMENT_TYPE_CLASS :
case ELEMENT_TYPE_PTR :
case ELEMENT_TYPE_BYREF :
//case ELEMENT_TYPE_VAR :
case ELEMENT_TYPE_U :
case ELEMENT_TYPE_I :
return (uElementNumber * nSizeOfPointer);
case ELEMENT_TYPE_TYPEDBYREF : // pair of ptrs
return (uElementNumber * nSizeOfPointer * 2);
case ELEMENT_TYPE_VALUETYPE :
*ppSig += CorSigUncompressToken(*ppSig, &tk);
ret = SizeOfValueType(tk,pImport);
if(ret != 0xFFFFFFFF) ret *= uElementNumber;
return ret;
// Modifiers or depedant types
case ELEMENT_TYPE_ARRAY :
ret = SizeOfField(ppSig, cSig-(unsigned)((*ppSig)-pSigStart), pImport);
if(ret != 0xFFFFFFFF)
{
unsigned rank = CorSigUncompressData(*ppSig);
if (rank == 0) ret = 0xFFFFFFFF;
else
{
int* lowerBounds = new (nothrow) int[2*rank];
int* sizes = &lowerBounds[rank];
memset(lowerBounds, 0, sizeof(int)*2*rank);
unsigned numSizes = CorSigUncompressData(*ppSig);
_ASSERTE(numSizes <= rank);
unsigned i;
for(i =0; i < numSizes; i++)
sizes[i] = CorSigUncompressData(*ppSig);
unsigned numLowBounds = CorSigUncompressData(*ppSig);
_ASSERTE(numLowBounds <= rank);
for(i = 0; i < numLowBounds; i++)
*ppSig+=CorSigUncompressSignedInt(*ppSig,&lowerBounds[i]);
for(i = 0; i < numSizes; i++)
{
if (sizes[i]) uElementNumber *= sizes[i];
}
ret *= uElementNumber;
delete[] lowerBounds;
}
}
return ret;
case ELEMENT_TYPE_CMOD_OPT :
case ELEMENT_TYPE_CMOD_REQD :
*ppSig += CorSigUncompressToken(*ppSig, &tk);
case ELEMENT_TYPE_PINNED :
case ELEMENT_TYPE_SZARRAY : // uElementNumber doesn't change
if(*ppSig < pSigEnd) Reiterate = TRUE;
break;
default:
case ELEMENT_TYPE_SENTINEL :
case ELEMENT_TYPE_END :
break;
} // end switch
} while(Reiterate);
} // end if(CALLCONV_FIELD)
} // end if(signature && import)
return ret;
}
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