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invokeutil.cpp
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invokeutil.cpp
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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.
//
//
////////////////////////////////////////////////////////////////////////////////
// This module defines a Utility Class used by reflection
//
//
////////////////////////////////////////////////////////////////////////////////
#include "common.h"
#include "invokeutil.h"
#include "corpriv.h"
#include "method.hpp"
#include "threads.h"
#include "excep.h"
#include "field.h"
#include "customattribute.h"
#include "eeconfig.h"
#include "generics.h"
#include "runtimehandles.h"
#include "argdestination.h"
// The Attributes Table
// 20 bits for built in types and 12 bits for Properties
// The properties are followed by the widening mask. All types widen to themselves.
const DWORD InvokeUtil::PrimitiveAttributes[PRIMITIVE_TABLE_SIZE] = {
0x00, // ELEMENT_TYPE_END
0x00, // ELEMENT_TYPE_VOID
PT_Primitive | 0x0004, // ELEMENT_TYPE_BOOLEAN
PT_Primitive | 0x3F88, // ELEMENT_TYPE_CHAR (W = U2, CHAR, I4, U4, I8, U8, R4, R8) (U2 == Char)
PT_Primitive | 0x3550, // ELEMENT_TYPE_I1 (W = I1, I2, I4, I8, R4, R8)
PT_Primitive | 0x3FE8, // ELEMENT_TYPE_U1 (W = CHAR, U1, I2, U2, I4, U4, I8, U8, R4, R8)
PT_Primitive | 0x3540, // ELEMENT_TYPE_I2 (W = I2, I4, I8, R4, R8)
PT_Primitive | 0x3F88, // ELEMENT_TYPE_U2 (W = U2, CHAR, I4, U4, I8, U8, R4, R8)
PT_Primitive | 0x3500, // ELEMENT_TYPE_I4 (W = I4, I8, R4, R8)
PT_Primitive | 0x3E00, // ELEMENT_TYPE_U4 (W = U4, I8, R4, R8)
PT_Primitive | 0x3400, // ELEMENT_TYPE_I8 (W = I8, R4, R8)
PT_Primitive | 0x3800, // ELEMENT_TYPE_U8 (W = U8, R4, R8)
PT_Primitive | 0x3000, // ELEMENT_TYPE_R4 (W = R4, R8)
PT_Primitive | 0x2000, // ELEMENT_TYPE_R8 (W = R8)
};
BOOL InvokeUtil::IsVoidPtr(TypeHandle th)
{
LIMITED_METHOD_CONTRACT;
if (!th.IsPointer())
return FALSE;
return th.AsTypeDesc()->GetTypeParam() == CoreLibBinder::GetElementType(ELEMENT_TYPE_VOID);
}
OBJECTREF InvokeUtil::CreatePointer(TypeHandle th, void * p)
{
CONTRACT(OBJECTREF) {
THROWS;
GC_TRIGGERS;
MODE_COOPERATIVE;
PRECONDITION(!th.IsNull());
POSTCONDITION(RETVAL != NULL);
}
CONTRACT_END;
OBJECTREF refObj = NULL;
GCPROTECT_BEGIN(refObj);
refObj = AllocateObject(CoreLibBinder::GetClass(CLASS__POINTER));
((ReflectionPointer *)OBJECTREFToObject(refObj))->_ptr = p;
OBJECTREF refType = th.GetManagedClassObject();
SetObjectReference(&(((ReflectionPointer *)OBJECTREFToObject(refObj))->_ptrType), refType);
GCPROTECT_END();
RETURN refObj;
}
TypeHandle InvokeUtil::GetPointerType(OBJECTREF pObj) {
CONTRACT(TypeHandle) {
NOTHROW;
GC_NOTRIGGER;
MODE_COOPERATIVE;
PRECONDITION(pObj != NULL);
POSTCONDITION(!RETVAL.IsNull());
}
CONTRACT_END;
ReflectionPointer * pReflectionPointer = (ReflectionPointer *)OBJECTREFToObject(pObj);
REFLECTCLASSBASEREF o = (REFLECTCLASSBASEREF)pReflectionPointer->_ptrType;
TypeHandle typeHandle = o->GetType();
RETURN typeHandle;
}
void* InvokeUtil::GetPointerValue(OBJECTREF pObj) {
CONTRACT(void*) {
NOTHROW;
GC_NOTRIGGER;
MODE_COOPERATIVE;
PRECONDITION(pObj != NULL);
POSTCONDITION(CheckPointer(RETVAL, NULL_OK));
}
CONTRACT_END;
ReflectionPointer * pReflectionPointer = (ReflectionPointer *)OBJECTREFToObject(pObj);
void *value = pReflectionPointer->_ptr;
RETURN value;
}
void *InvokeUtil::GetIntPtrValue(OBJECTREF pObj) {
CONTRACT(void*) {
NOTHROW;
GC_NOTRIGGER;
MODE_COOPERATIVE;
PRECONDITION(pObj != NULL);
POSTCONDITION(CheckPointer(RETVAL, NULL_OK));
}
CONTRACT_END;
RETURN *(void **)((pObj)->UnBox());
}
void InvokeUtil::CopyArg(TypeHandle th, PVOID argRef, ArgDestination *argDest) {
CONTRACTL {
THROWS;
GC_NOTRIGGER; // Caller does not protect object references
MODE_COOPERATIVE;
PRECONDITION(!th.IsNull());
INJECT_FAULT(COMPlusThrowOM());
}
CONTRACTL_END;
void *pArgDst = argDest->GetDestinationAddress();
CorElementType type = th.GetVerifierCorElementType();
switch (type) {
case ELEMENT_TYPE_BOOLEAN:
case ELEMENT_TYPE_U1:
case ELEMENT_TYPE_I1:
{
_ASSERTE(argRef != NULL);
*(INT8 *)pArgDst = *(INT8 *)argRef;
break;
}
case ELEMENT_TYPE_I2:
case ELEMENT_TYPE_U2:
case ELEMENT_TYPE_CHAR:
{
_ASSERTE(argRef != NULL);
*(INT16 *)pArgDst = *(INT16 *)argRef;
break;
}
case ELEMENT_TYPE_I4:
case ELEMENT_TYPE_U4:
case ELEMENT_TYPE_R4:
IN_TARGET_32BIT(case ELEMENT_TYPE_U:)
IN_TARGET_32BIT(case ELEMENT_TYPE_I:)
{
_ASSERTE(argRef != NULL);
*(INT32 *)pArgDst = *(INT32 *)argRef;
break;
}
case ELEMENT_TYPE_I8:
case ELEMENT_TYPE_U8:
case ELEMENT_TYPE_R8:
IN_TARGET_64BIT(case ELEMENT_TYPE_I:)
IN_TARGET_64BIT(case ELEMENT_TYPE_U:)
{
_ASSERTE(argRef != NULL);
*(INT64 *)pArgDst = *(INT64 *)argRef;
break;
}
case ELEMENT_TYPE_VALUETYPE:
{
MethodTable* pMT = th.GetMethodTable();
CopyValueClassArg(argDest, argRef, pMT, 0);
break;
}
case ELEMENT_TYPE_STRING: // System.String
case ELEMENT_TYPE_CLASS: // Class
case ELEMENT_TYPE_OBJECT: // System.Object
case ELEMENT_TYPE_SZARRAY: // Single Dim
case ELEMENT_TYPE_ARRAY: // General Array
case ELEMENT_TYPE_VAR:
{
if (argRef == NULL)
*(PVOID *)pArgDst = 0;
else
*(PVOID *)pArgDst = OBJECTREFToObject((OBJECTREF)(Object*)*(PVOID*)argRef);
break;
}
case ELEMENT_TYPE_BYREF:
{
*(PVOID *)pArgDst = argRef;
break;
}
case ELEMENT_TYPE_PTR:
case ELEMENT_TYPE_FNPTR:
{
_ASSERTE(argRef != NULL);
MethodTable* pMT = th.GetMethodTable();
CopyValueClassArg(argDest, argRef, pMT, 0);
break;
}
case ELEMENT_TYPE_VOID:
default:
_ASSERTE(!"Unknown Type");
COMPlusThrow(kNotSupportedException);
}
}
// CreatePrimitiveValue
// This routine will validate the object and then place the value into
// the destination
// dstType -- The type of the destination
// srcType -- The type of the source
// srcObj -- The Object containing the primitive value.
// pDst -- pointer to the destination
void InvokeUtil::CreatePrimitiveValue(CorElementType dstType,
CorElementType srcType,
OBJECTREF srcObj,
ARG_SLOT *pDst) {
CONTRACTL {
THROWS;
GC_NOTRIGGER;
MODE_COOPERATIVE;
PRECONDITION(srcObj != NULL);
PRECONDITION(CheckPointer(pDst));
INJECT_FAULT(COMPlusThrowOM());
}
CONTRACTL_END;
CreatePrimitiveValue(dstType, srcType, srcObj->UnBox(), srcObj->GetMethodTable(), pDst);
}
void InvokeUtil::CreatePrimitiveValue(CorElementType dstType,
CorElementType srcType,
void *pSrc,
MethodTable *pSrcMT,
ARG_SLOT* pDst)
{
CONTRACTL {
THROWS;
GC_NOTRIGGER;
MODE_COOPERATIVE;
PRECONDITION(CheckPointer(pDst));
INJECT_FAULT(COMPlusThrowOM());
}
CONTRACTL_END;
if (!IsPrimitiveType(srcType) || !CanPrimitiveWiden(dstType, srcType))
COMPlusThrow(kArgumentException, W("Arg_PrimWiden"));
ARG_SLOT data = 0;
switch (srcType) {
case ELEMENT_TYPE_I1:
data = *(INT8*)pSrc;
break;
case ELEMENT_TYPE_I2:
data = *(INT16*)pSrc;
break;
IN_TARGET_32BIT(case ELEMENT_TYPE_I:)
case ELEMENT_TYPE_I4:
data = *(INT32 *)pSrc;
break;
IN_TARGET_64BIT(case ELEMENT_TYPE_I:)
case ELEMENT_TYPE_I8:
data = *(INT64 *)pSrc;
break;
default:
switch (pSrcMT->GetNumInstanceFieldBytes())
{
case 1:
data = *(UINT8 *)pSrc;
break;
case 2:
data = *(UINT16 *)pSrc;
break;
case 4:
data = *(UINT32 *)pSrc;
break;
case 8:
data = *(UINT64 *)pSrc;
break;
default:
_ASSERTE(!"Unknown conversion");
// this is really an impossible condition
COMPlusThrow(kNotSupportedException);
break;
}
}
if (srcType == dstType) {
// shortcut
*pDst = data;
return;
}
// Copy the data and return
switch (dstType) {
case ELEMENT_TYPE_BOOLEAN:
case ELEMENT_TYPE_I1:
case ELEMENT_TYPE_U1:
case ELEMENT_TYPE_CHAR:
case ELEMENT_TYPE_I2:
case ELEMENT_TYPE_U2:
case ELEMENT_TYPE_I4:
case ELEMENT_TYPE_U4:
case ELEMENT_TYPE_I:
case ELEMENT_TYPE_U:
case ELEMENT_TYPE_I8:
case ELEMENT_TYPE_U8:
switch (srcType) {
case ELEMENT_TYPE_BOOLEAN:
case ELEMENT_TYPE_I1:
case ELEMENT_TYPE_U1:
case ELEMENT_TYPE_CHAR:
case ELEMENT_TYPE_I2:
case ELEMENT_TYPE_U2:
case ELEMENT_TYPE_I4:
case ELEMENT_TYPE_U4:
case ELEMENT_TYPE_I:
case ELEMENT_TYPE_U:
case ELEMENT_TYPE_I8:
case ELEMENT_TYPE_U8:
*pDst = data;
break;
case ELEMENT_TYPE_R4:
*pDst = (CLR_I8)(*(CLR_R4*)pSrc);
break;
case ELEMENT_TYPE_R8:
*pDst = (CLR_I8)(*(CLR_R8*)pSrc);
break;
default:
_ASSERTE(!"Unknown conversion");
// this is really an impossible condition
COMPlusThrow(kNotSupportedException);
}
break;
case ELEMENT_TYPE_R4:
case ELEMENT_TYPE_R8:
{
CLR_R8 r8 = 0;
switch (srcType) {
case ELEMENT_TYPE_BOOLEAN:
case ELEMENT_TYPE_I1:
case ELEMENT_TYPE_I2:
case ELEMENT_TYPE_I4:
IN_TARGET_32BIT(case ELEMENT_TYPE_I:)
r8 = (CLR_R8)((INT32)data);
break;
case ELEMENT_TYPE_U1:
case ELEMENT_TYPE_CHAR:
case ELEMENT_TYPE_U2:
case ELEMENT_TYPE_U4:
IN_TARGET_32BIT(case ELEMENT_TYPE_U:)
r8 = (CLR_R8)((UINT32)data);
break;
case ELEMENT_TYPE_U8:
IN_TARGET_64BIT(case ELEMENT_TYPE_U:)
r8 = (CLR_R8)((UINT64)data);
break;
case ELEMENT_TYPE_I8:
IN_TARGET_64BIT(case ELEMENT_TYPE_I:)
r8 = (CLR_R8)((INT64)data);
break;
case ELEMENT_TYPE_R4:
r8 = *(CLR_R4*)pSrc;
break;
case ELEMENT_TYPE_R8:
r8 = *(CLR_R8*)pSrc;
break;
default:
_ASSERTE(!"Unknown R4 or R8 conversion");
// this is really an impossible condition
COMPlusThrow(kNotSupportedException);
}
if (dstType == ELEMENT_TYPE_R4) {
CLR_R4 r4 = (CLR_R4)r8;
*pDst = (UINT32&)r4;
}
else {
*pDst = (UINT64&)r8;
}
}
break;
default:
_ASSERTE(!"Unknown conversion");
}
}
//ValidField
// This method checks that the object can be widened to the proper type
void InvokeUtil::ValidField(TypeHandle th, OBJECTREF* value)
{
CONTRACTL {
THROWS;
GC_TRIGGERS;
MODE_COOPERATIVE;
PRECONDITION(!th.IsNull());
PRECONDITION(CheckPointer(value));
PRECONDITION(IsProtectedByGCFrame (value));
INJECT_FAULT(COMPlusThrowOM());
}
CONTRACTL_END;
if ((*value) == 0)
return;
MethodTable* pMT;
CorElementType oType;
CorElementType type = th.GetSignatureCorElementType();
pMT = (*value)->GetMethodTable();
oType = TypeHandle(pMT).GetSignatureCorElementType();
// handle pointers
if (type == ELEMENT_TYPE_PTR || type == ELEMENT_TYPE_FNPTR) {
if (CoreLibBinder::IsClass((*value)->GetMethodTable(), CLASS__POINTER) && type == ELEMENT_TYPE_PTR) {
TypeHandle srcTH = GetPointerType(*value);
if (!IsVoidPtr(th)) {
if (!srcTH.CanCastTo(th))
COMPlusThrow(kArgumentException,W("Arg_ObjObj"));
}
return;
}
else if (CoreLibBinder::IsClass((*value)->GetMethodTable(), CLASS__INTPTR)) {
return;
}
COMPlusThrow(kArgumentException,W("Arg_ObjObj"));
}
// Need to handle Object special
if (type == ELEMENT_TYPE_CLASS || type == ELEMENT_TYPE_VALUETYPE ||
type == ELEMENT_TYPE_OBJECT || type == ELEMENT_TYPE_STRING ||
type == ELEMENT_TYPE_ARRAY || type == ELEMENT_TYPE_SZARRAY)
{
if (th.GetMethodTable() == g_pObjectClass)
return;
if (IsPrimitiveType(oType)) {
if (type != ELEMENT_TYPE_VALUETYPE)
COMPlusThrow(kArgumentException,W("Arg_ObjObj"));
// Legacy behavior: The following if disallows assigning primitives to enums.
if (th.IsEnum())
COMPlusThrow(kArgumentException,W("Arg_ObjObj"));
type = th.GetVerifierCorElementType();
if (IsPrimitiveType(type))
{
if (CanPrimitiveWiden(type, oType))
return;
else
COMPlusThrow(kArgumentException,W("Arg_ObjObj"));
}
}
if (!ObjIsInstanceOf(OBJECTREFToObject(*value), th)) {
COMPlusThrow(kArgumentException,W("Arg_ObjObj"));
}
return;
}
if (!IsPrimitiveType(oType))
COMPlusThrow(kArgumentException,W("Arg_ObjObj"));
// Now make sure we can widen into the proper type -- CanWiden may run GC...
if (!CanPrimitiveWiden(type,oType))
COMPlusThrow(kArgumentException,W("Arg_ObjObj"));
}
//
// CreateObjectAfterInvoke
// This routine will create the specified object from the value returned by the Invoke target.
//
// This does not handle the ELEMENT_TYPE_VALUETYPE case. The caller must preallocate the box object and
// copy the value type into it afterward.
//
OBJECTREF InvokeUtil::CreateObjectAfterInvoke(TypeHandle th, void * pValue) {
CONTRACTL {
THROWS;
GC_TRIGGERS;
MODE_COOPERATIVE;
PRECONDITION(!th.IsNull());
INJECT_FAULT(COMPlusThrowOM());
}
CONTRACTL_END;
CorElementType type = th.GetSignatureCorElementType();
OBJECTREF obj = NULL;
// WARNING: pValue can be an inner reference into a managed object and it is not protected from GC. You must do nothing that
// triggers a GC until the all the data it points to has been captured in a GC-protected location.
// Handle the non-table types
switch (type) {
case ELEMENT_TYPE_VOID:
break;
case ELEMENT_TYPE_PTR:
{
obj = CreatePointer(th, *(void **)pValue);
break;
}
case ELEMENT_TYPE_CLASS: // Class
case ELEMENT_TYPE_SZARRAY: // Single Dim, Zero
case ELEMENT_TYPE_ARRAY: // General Array
case ELEMENT_TYPE_STRING:
case ELEMENT_TYPE_OBJECT:
case ELEMENT_TYPE_VAR:
obj = *(OBJECTREF *)pValue;
break;
case ELEMENT_TYPE_FNPTR:
{
LPVOID capturedValue = *(LPVOID*)pValue;
INDEBUG(pValue = (LPVOID)(size_t)0xcccccccc); // We're about to allocate a GC object - can no longer trust pValue
obj = AllocateObject(CoreLibBinder::GetElementType(ELEMENT_TYPE_I));
*(LPVOID*)(obj->UnBox()) = capturedValue;
}
break;
default:
_ASSERTE(!"Unknown Type");
COMPlusThrow(kNotSupportedException);
}
return obj;
}
// This is a special purpose Exception creation function. It
// creates the ReflectionTypeLoadException placing the passed
// classes array and exception array into it.
OBJECTREF InvokeUtil::CreateClassLoadExcept(OBJECTREF* classes, OBJECTREF* except) {
CONTRACT(OBJECTREF) {
THROWS;
GC_TRIGGERS;
MODE_COOPERATIVE;
PRECONDITION(CheckPointer(classes));
PRECONDITION(CheckPointer(except));
PRECONDITION(IsProtectedByGCFrame (classes));
PRECONDITION(IsProtectedByGCFrame (except));
POSTCONDITION(RETVAL != NULL);
INJECT_FAULT(COMPlusThrowOM());
}
CONTRACT_END;
OBJECTREF oRet = 0;
struct {
OBJECTREF o;
STRINGREF str;
} gc;
gc.o = NULL;
gc.str = NULL;
MethodTable *pVMClassLoadExcept = CoreLibBinder::GetException(kReflectionTypeLoadException);
gc.o = AllocateObject(pVMClassLoadExcept);
GCPROTECT_BEGIN(gc);
ARG_SLOT args[4];
// Retrieve the resource string.
ResMgrGetString(W("ReflectionTypeLoad_LoadFailed"), &gc.str);
MethodDesc* pMD = MemberLoader::FindMethod(gc.o->GetMethodTable(),
COR_CTOR_METHOD_NAME, &gsig_IM_ArrType_ArrException_Str_RetVoid);
if (!pMD)
{
MAKE_WIDEPTR_FROMUTF8(wzMethodName, COR_CTOR_METHOD_NAME);
COMPlusThrowNonLocalized(kMissingMethodException, wzMethodName);
}
MethodDescCallSite ctor(pMD);
// Call the constructor
args[0] = ObjToArgSlot(gc.o);
args[1] = ObjToArgSlot(*classes);
args[2] = ObjToArgSlot(*except);
args[3] = ObjToArgSlot((OBJECTREF)gc.str);
ctor.Call(args);
oRet = gc.o;
GCPROTECT_END();
RETURN oRet;
}
OBJECTREF InvokeUtil::CreateTargetExcept(OBJECTREF* except) {
CONTRACT(OBJECTREF) {
THROWS;
GC_TRIGGERS;
MODE_COOPERATIVE;
PRECONDITION(CheckPointer(except));
PRECONDITION(IsProtectedByGCFrame (except));
POSTCONDITION(RETVAL != NULL);
INJECT_FAULT(COMPlusThrowOM());
}
CONTRACT_END;
OBJECTREF o;
OBJECTREF oRet = 0;
MethodTable *pVMTargetExcept = CoreLibBinder::GetException(kTargetInvocationException);
o = AllocateObject(pVMTargetExcept);
GCPROTECT_BEGIN(o);
ARG_SLOT args[2];
MethodDesc* pMD = MemberLoader::FindMethod(o->GetMethodTable(),
COR_CTOR_METHOD_NAME, &gsig_IM_Exception_RetVoid);
if (!pMD)
{
MAKE_WIDEPTR_FROMUTF8(wzMethodName, COR_CTOR_METHOD_NAME);
COMPlusThrowNonLocalized(kMissingMethodException, wzMethodName);
}
MethodDescCallSite ctor(pMD);
// Call the constructor
args[0] = ObjToArgSlot(o);
// for security, don't allow a non-exception object to be spoofed as an exception object. We cast later and
// don't check and this could cause us grief.
_ASSERTE(!except || IsException((*except)->GetMethodTable())); // how do we get non-exceptions?
if (except && IsException((*except)->GetMethodTable()))
{
args[1] = ObjToArgSlot(*except);
}
else
{
args[1] = NULL;
}
ctor.Call(args);
oRet = o;
GCPROTECT_END();
RETURN oRet;
}
// Ensure that the field is declared on the type or subtype of the type to which the typed reference refers.
// Note that a typed reference is a reference to an object and is not a field on that object (as in C# ref).
// Ensure that if the field is an instance field that the typed reference is not null.
void InvokeUtil::ValidateObjectTarget(FieldDesc *pField, TypeHandle enclosingType, OBJECTREF *target) {
CONTRACTL {
THROWS;
GC_TRIGGERS;
MODE_COOPERATIVE;
PRECONDITION(CheckPointer(pField));
PRECONDITION(!enclosingType.IsNull() || pField->IsStatic());
PRECONDITION(CheckPointer(target));
INJECT_FAULT(COMPlusThrowOM());
}
CONTRACTL_END;
if (pField->IsStatic() && (enclosingType.IsNull() || !*target))
return;
if (!pField->IsStatic() && !*target)
COMPlusThrow(kTargetException,W("RFLCT.Targ_StatFldReqTarg"));
// Verify that the object is of the proper type...
TypeHandle ty = (*target)->GetTypeHandle();
while (!ty.IsNull() && ty != enclosingType)
ty = ty.GetParent();
// Give a second chance to thunking classes to do the
// correct cast
if (ty.IsNull()) {
{
COMPlusThrow(kArgumentException,W("Arg_ObjObj"));
}
}
}
// SetValidField
// Given an target object, a value object and a field this method will set the field
// on the target object. The field must be validate before calling this.
void InvokeUtil::SetValidField(CorElementType fldType,
TypeHandle fldTH,
FieldDesc *pField,
OBJECTREF *target,
OBJECTREF *valueObj,
TypeHandle declaringType,
CLR_BOOL *pDomainInitialized) {
CONTRACTL {
THROWS;
GC_TRIGGERS;
MODE_COOPERATIVE;
PRECONDITION(!fldTH.IsNull());
PRECONDITION(CheckPointer(pField));
PRECONDITION(CheckPointer(target));
PRECONDITION(CheckPointer(valueObj));
PRECONDITION(IsProtectedByGCFrame (target));
PRECONDITION(IsProtectedByGCFrame (valueObj));
PRECONDITION(declaringType.IsNull () || !declaringType.IsTypeDesc());
INJECT_FAULT(COMPlusThrowOM());
}
CONTRACTL_END;
// call the <cinit>
OBJECTREF Throwable = NULL;
MethodTable * pDeclMT = NULL;
if (!declaringType.IsNull())
{
pDeclMT = declaringType.GetMethodTable();
// We don't allow setting the field of nullable<T> (hasValue and value)
// Because you can't independently set them for this type.
if (Nullable::IsNullableType(pDeclMT))
COMPlusThrow(kNotSupportedException);
if (pDeclMT->IsSharedByGenericInstantiations())
COMPlusThrow(kNotSupportedException, W("NotSupported_Type"));
}
else
{
pDeclMT = pField->GetModule()->GetGlobalMethodTable();
}
if (*pDomainInitialized == FALSE)
{
EX_TRY
{
pDeclMT->EnsureInstanceActive();
pDeclMT->CheckRunClassInitThrowing();
*pDomainInitialized = TRUE;
}
EX_CATCH_THROWABLE(&Throwable);
}
#ifdef _DEBUG
else if (*pDomainInitialized == TRUE && !declaringType.IsNull())
CONSISTENCY_CHECK(declaringType.GetMethodTable()->CheckActivated());
#endif
if(Throwable != NULL)
{
GCPROTECT_BEGIN(Throwable);
OBJECTREF except = CreateTargetExcept(&Throwable);
COMPlusThrow(except);
GCPROTECT_END();
}
// Verify we're not trying to set the value of a static initonly field
// once the class has been initialized.
if (pField->IsStatic() && pDeclMT->IsClassInited() && IsFdInitOnly(pField->GetAttributes()))
{
DefineFullyQualifiedNameForClassW();
SString ssFieldName(SString::Utf8, pField->GetName());
COMPlusThrow(kFieldAccessException,
IDS_EE_CANNOT_SET_INITONLY_STATIC_FIELD,
ssFieldName.GetUnicode(),
GetFullyQualifiedNameForClassW(pDeclMT));
}
// Set the field
ARG_SLOT value;
void* valueptr;
switch (fldType) {
case ELEMENT_TYPE_VOID:
_ASSERTE(!"Void used as Field Type!");
COMPlusThrow(kNotSupportedException);
case ELEMENT_TYPE_BOOLEAN: // boolean
case ELEMENT_TYPE_I1: // byte
case ELEMENT_TYPE_U1: // unsigned byte
value = 0;
if (*valueObj != 0) {
MethodTable *p = (*valueObj)->GetMethodTable();
CorElementType oType = p->GetInternalCorElementType();
CreatePrimitiveValue(fldType, oType, *valueObj, &value);
}
if (pField->IsStatic())
pField->SetStaticValue8((unsigned char)value);
else
pField->SetValue8(*target,(unsigned char)value);
break;
case ELEMENT_TYPE_I2: // short
case ELEMENT_TYPE_U2: // unsigned short
case ELEMENT_TYPE_CHAR: // char
value = 0;
if (*valueObj != 0) {
MethodTable *p = (*valueObj)->GetMethodTable();
CorElementType oType = p->GetInternalCorElementType();
CreatePrimitiveValue(fldType, oType, *valueObj, &value);
}
if (pField->IsStatic())
pField->SetStaticValue16((short)value);
else
pField->SetValue16(*target, (short)value);
break;
case ELEMENT_TYPE_I:
valueptr = *valueObj != 0 ? GetIntPtrValue(*valueObj) : NULL;
if (pField->IsStatic())
pField->SetStaticValuePtr(valueptr);
else
pField->SetValuePtr(*target,valueptr);
break;
case ELEMENT_TYPE_U:
valueptr = *valueObj != 0 ? GetIntPtrValue(*valueObj) : NULL;
if (pField->IsStatic())
pField->SetStaticValuePtr(valueptr);
else
pField->SetValuePtr(*target,valueptr);
break;
case ELEMENT_TYPE_PTR: // pointers
if (*valueObj != 0 && CoreLibBinder::IsClass((*valueObj)->GetMethodTable(), CLASS__POINTER)) {
valueptr = GetPointerValue(*valueObj);
if (pField->IsStatic())
pField->SetStaticValuePtr(valueptr);
else
pField->SetValuePtr(*target,valueptr);
break;
}
FALLTHROUGH;
case ELEMENT_TYPE_FNPTR:
valueptr = *valueObj != 0 ? GetIntPtrValue(*valueObj) : NULL;
if (pField->IsStatic())
pField->SetStaticValuePtr(valueptr);
else
pField->SetValuePtr(*target,valueptr);
break;
case ELEMENT_TYPE_I4: // int
case ELEMENT_TYPE_U4: // unsigned int
case ELEMENT_TYPE_R4: // float
value = 0;
if (*valueObj != 0) {
MethodTable *p = (*valueObj)->GetMethodTable();
CorElementType oType = p->GetInternalCorElementType();
CreatePrimitiveValue(fldType, oType, *valueObj, &value);
}
if (pField->IsStatic())
pField->SetStaticValue32((int)value);
else
pField->SetValue32(*target, (int)value);
break;
case ELEMENT_TYPE_I8: // long
case ELEMENT_TYPE_U8: // unsigned long
case ELEMENT_TYPE_R8: // double
value = 0;
if (*valueObj != 0) {
MethodTable *p = (*valueObj)->GetMethodTable();
CorElementType oType = p->GetInternalCorElementType();
CreatePrimitiveValue(fldType, oType, *valueObj, &value);
}
if (pField->IsStatic())
pField->SetStaticValue64(value);
else
pField->SetValue64(*target,value);
break;
case ELEMENT_TYPE_SZARRAY: // Single Dim, Zero
case ELEMENT_TYPE_ARRAY: // General Array
case ELEMENT_TYPE_CLASS:
case ELEMENT_TYPE_OBJECT:
case ELEMENT_TYPE_VAR:
if (pField->IsStatic())
pField->SetStaticOBJECTREF(*valueObj);
else
pField->SetRefValue(*target, *valueObj);
break;
case ELEMENT_TYPE_VALUETYPE:
{
_ASSERTE(!fldTH.IsTypeDesc());
MethodTable *pMT = fldTH.AsMethodTable();
{
void* pFieldData;
if (pField->IsStatic())
pFieldData = pField->GetCurrentStaticAddress();
else
pFieldData = (*((BYTE**)target)) + pField->GetOffset() + sizeof(Object);
if (*valueObj == NULL)
InitValueClass(pFieldData, pMT);
else
pMT->UnBoxIntoUnchecked(pFieldData, *valueObj);
}
}
break;
default:
_ASSERTE(!"Unknown Type");
// this is really an impossible condition
COMPlusThrow(kNotSupportedException);
}
}
// GetFieldValue
// This method will return an ARG_SLOT containing the value of the field.
// GetFieldValue
// This method will return an ARG_SLOT containing the value of the field.
OBJECTREF InvokeUtil::GetFieldValue(FieldDesc* pField, TypeHandle fieldType, OBJECTREF* target, TypeHandle declaringType, CLR_BOOL *pDomainInitialized) {
CONTRACTL {
THROWS;
GC_TRIGGERS;
MODE_COOPERATIVE;
PRECONDITION(CheckPointer(pField));
PRECONDITION(!fieldType.IsNull());
PRECONDITION(CheckPointer(target));
PRECONDITION(declaringType.IsNull () || !declaringType.IsTypeDesc());
INJECT_FAULT(COMPlusThrowOM());
}
CONTRACTL_END;
OBJECTREF obj = NULL;
// call the .cctor
OBJECTREF Throwable = NULL;
MethodTable * pDeclMT = NULL;
if (!declaringType.IsNull())
{
pDeclMT = declaringType.GetMethodTable();
// We don't allow getting the field just so we don't have more specical
// cases than we need to. Then we need at least the throw check to ensure
// we don't allow data corruption.
if (Nullable::IsNullableType(pDeclMT))
COMPlusThrow(kNotSupportedException);
if (pDeclMT->IsSharedByGenericInstantiations())
COMPlusThrow(kNotSupportedException, W("NotSupported_Type"));
}
else
{
pDeclMT = pField->GetModule()->GetGlobalMethodTable();
}
if (*pDomainInitialized == FALSE)
{
EX_TRY
{
pDeclMT->EnsureInstanceActive();
pDeclMT->CheckRunClassInitThrowing();
*pDomainInitialized = TRUE;
}
EX_CATCH_THROWABLE(&Throwable);
}
#ifdef _DEBUG
else if (*pDomainInitialized == TRUE && !declaringType.IsNull())
CONSISTENCY_CHECK(declaringType.GetMethodTable()->CheckActivated());
#endif
if(Throwable != NULL)
{
GCPROTECT_BEGIN(Throwable);
OBJECTREF except = CreateTargetExcept(&Throwable);
COMPlusThrow(except);
GCPROTECT_END();
}
CorElementType fieldElementType = pField->GetFieldType();
switch (fieldElementType) {
case ELEMENT_TYPE_BOOLEAN: // boolean
case ELEMENT_TYPE_I1: // byte