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jitinterface.cpp
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jitinterface.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.
// See the LICENSE file in the project root for more information.
// ===========================================================================
// File: JITinterface.CPP
//
// ===========================================================================
#include "common.h"
#include "jitinterface.h"
#include "codeman.h"
#include "method.hpp"
#include "class.h"
#include "object.h"
#include "field.h"
#include "stublink.h"
#include "virtualcallstub.h"
#include "corjit.h"
#include "eeconfig.h"
#include "excep.h"
#include "log.h"
#include "excep.h"
#include "float.h" // for isnan
#include "dbginterface.h"
#include "security.h"
#include "securitymeta.h"
#include "dllimport.h"
#include "gc.h"
#include "comdelegate.h"
#include "jitperf.h" // to track jit perf
#include "corprof.h"
#include "eeprofinterfaces.h"
#ifdef FEATURE_REMOTING
#include "remoting.h" // create context bound and remote class instances
#endif
#include "perfcounters.h"
#ifdef PROFILING_SUPPORTED
#include "proftoeeinterfaceimpl.h"
#include "eetoprofinterfaceimpl.h"
#include "eetoprofinterfaceimpl.inl"
#include "profilepriv.h"
#endif
#include "tls.h"
#include "ecall.h"
#include "generics.h"
#include "typestring.h"
#include "stackprobe.h"
#include "typedesc.h"
#include "genericdict.h"
#include "array.h"
#include "debuginfostore.h"
#include "constrainedexecutionregion.h"
#include "security.h"
#include "safemath.h"
#include "runtimehandles.h"
#include "sigbuilder.h"
#include "openum.h"
#ifdef HAVE_GCCOVER
#include "gccover.h"
#endif // HAVE_GCCOVER
#include "mdaassistants.h"
#ifdef FEATURE_PREJIT
#include "compile.h"
#include "corcompile.h"
#endif // FEATURE_PREJIT
#ifdef FEATURE_INTERPRETER
#include "interpreter.h"
#endif // FEATURE_INTERPRETER
// The Stack Overflow probe takes place in the COOPERATIVE_TRANSITION_BEGIN() macro
//
#define JIT_TO_EE_TRANSITION() MAKE_CURRENT_THREAD_AVAILABLE_EX(m_pThread); \
_ASSERTE(CURRENT_THREAD == GetThread()); \
INSTALL_UNWIND_AND_CONTINUE_HANDLER_NO_PROBE; \
COOPERATIVE_TRANSITION_BEGIN(); \
START_NON_JIT_PERF();
#define EE_TO_JIT_TRANSITION() STOP_NON_JIT_PERF(); \
COOPERATIVE_TRANSITION_END(); \
UNINSTALL_UNWIND_AND_CONTINUE_HANDLER_NO_PROBE;
#define JIT_TO_EE_TRANSITION_LEAF()
#define EE_TO_JIT_TRANSITION_LEAF()
#if defined(CROSSGEN_COMPILE)
static const char *const hlpNameTable[CORINFO_HELP_COUNT] = {
#define JITHELPER(code, pfnHelper, sig) #code,
#include "jithelpers.h"
};
#endif
#ifdef DACCESS_COMPILE
// The real definitions are in jithelpers.cpp. However, those files are not included in the DAC build.
// Hence, we add them here.
GARY_IMPL(VMHELPDEF, hlpFuncTable, CORINFO_HELP_COUNT);
GARY_IMPL(VMHELPDEF, hlpDynamicFuncTable, DYNAMIC_CORINFO_HELP_COUNT);
#else // DACCESS_COMPILE
/*********************************************************************/
#if defined(ENABLE_PERF_COUNTERS)
LARGE_INTEGER g_lastTimeInJitCompilation;
#endif
BOOL canReplaceMethodOnStack(MethodDesc* pReplaced, MethodDesc* pDeclaredReplacer, MethodDesc* pExactReplacer);
/*********************************************************************/
inline CORINFO_MODULE_HANDLE GetScopeHandle(MethodDesc* method)
{
LIMITED_METHOD_CONTRACT;
if (method->IsDynamicMethod())
{
return MakeDynamicScope(method->AsDynamicMethodDesc()->GetResolver());
}
else
{
return GetScopeHandle(method->GetModule());
}
}
//This is common refactored code from within several of the access check functions.
BOOL ModifyCheckForDynamicMethod(DynamicResolver *pResolver,
TypeHandle *pOwnerTypeForSecurity,
AccessCheckOptions::AccessCheckType *pAccessCheckType,
DynamicResolver** ppAccessContext)
{
CONTRACTL {
STANDARD_VM_CHECK;
PRECONDITION(CheckPointer(pResolver));
PRECONDITION(CheckPointer(pOwnerTypeForSecurity));
PRECONDITION(CheckPointer(pAccessCheckType));
PRECONDITION(CheckPointer(ppAccessContext));
PRECONDITION(*pAccessCheckType == AccessCheckOptions::kNormalAccessibilityChecks);
} CONTRACTL_END;
BOOL doAccessCheck = TRUE;
//Do not blindly initialize fields, since they've already got important values.
DynamicResolver::SecurityControlFlags dwSecurityFlags = DynamicResolver::Default;
TypeHandle dynamicOwner;
pResolver->GetJitContext(&dwSecurityFlags, &dynamicOwner);
if (!dynamicOwner.IsNull())
*pOwnerTypeForSecurity = dynamicOwner;
if (dwSecurityFlags & DynamicResolver::SkipVisibilityChecks)
{
doAccessCheck = FALSE;
}
else if (dwSecurityFlags & DynamicResolver::RestrictedSkipVisibilityChecks)
{
*pAccessCheckType = AccessCheckOptions::kRestrictedMemberAccess;
#ifdef FEATURE_CORECLR
// For compatibility, don't do transparency checks from dynamic methods in FT CoreCLR.
if (GetAppDomain()->GetSecurityDescriptor()->IsFullyTrusted())
*pAccessCheckType = AccessCheckOptions::kRestrictedMemberAccessNoTransparency;
#endif // FEATURE_CORECLR
#ifdef FEATURE_COMPRESSEDSTACK
if (dwSecurityFlags & DynamicResolver::HasCreationContext)
*ppAccessContext = pResolver;
#endif // FEATURE_COMPRESSEDSTACK
}
else
{
#ifdef FEATURE_CORECLR
// For compatibility, don't do transparency checks from dynamic methods in FT CoreCLR.
if (GetAppDomain()->GetSecurityDescriptor()->IsFullyTrusted())
*pAccessCheckType = AccessCheckOptions::kNormalAccessNoTransparency;
#endif // FEATURE_CORECLR
}
return doAccessCheck;
}
/*****************************************************************************/
// Initialize from data we passed across to the JIT
inline static void GetTypeContext(const CORINFO_SIG_INST *info, SigTypeContext *pTypeContext)
{
LIMITED_METHOD_CONTRACT;
SigTypeContext::InitTypeContext(
Instantiation((TypeHandle *) info->classInst, info->classInstCount),
Instantiation((TypeHandle *) info->methInst, info->methInstCount),
pTypeContext);
}
static MethodDesc* GetMethodFromContext(CORINFO_CONTEXT_HANDLE context)
{
LIMITED_METHOD_CONTRACT;
if (((size_t) context & CORINFO_CONTEXTFLAGS_MASK) == CORINFO_CONTEXTFLAGS_CLASS)
{
return NULL;
}
else
{
return GetMethod((CORINFO_METHOD_HANDLE)((size_t) context & ~CORINFO_CONTEXTFLAGS_MASK));
}
}
static TypeHandle GetTypeFromContext(CORINFO_CONTEXT_HANDLE context)
{
LIMITED_METHOD_CONTRACT;
if (((size_t) context & CORINFO_CONTEXTFLAGS_MASK) == CORINFO_CONTEXTFLAGS_CLASS)
{
return TypeHandle((CORINFO_CLASS_HANDLE) ((size_t) context & ~CORINFO_CONTEXTFLAGS_MASK));
}
else
{
MethodTable * pMT = GetMethodFromContext(context)->GetMethodTable();
return TypeHandle(pMT);
}
}
// Initialize from a context parameter passed to the JIT and back. This is a parameter
// that indicates which method is being jitted.
inline static void GetTypeContext(CORINFO_CONTEXT_HANDLE context, SigTypeContext *pTypeContext)
{
CONTRACTL
{
NOTHROW;
GC_NOTRIGGER;
SO_TOLERANT;
MODE_ANY;
PRECONDITION(context != NULL);
}
CONTRACTL_END;
if (GetMethodFromContext(context))
{
SigTypeContext::InitTypeContext(GetMethodFromContext(context), pTypeContext);
}
else
{
SigTypeContext::InitTypeContext(GetTypeFromContext(context), pTypeContext);
}
}
static BOOL ContextIsShared(CORINFO_CONTEXT_HANDLE context)
{
LIMITED_METHOD_CONTRACT;
MethodDesc *pContextMD = GetMethodFromContext(context);
if (pContextMD != NULL)
{
return pContextMD->IsSharedByGenericInstantiations();
}
else
{
// Type handle contexts are non-shared and are used for inlining of
// non-generic methods in generic classes
return FALSE;
}
}
// Returns true if context is providing any generic variables
static BOOL ContextIsInstantiated(CORINFO_CONTEXT_HANDLE context)
{
LIMITED_METHOD_CONTRACT;
if (GetMethodFromContext(context))
{
return GetMethodFromContext(context)->HasClassOrMethodInstantiation();
}
else
{
return GetTypeFromContext(context).HasInstantiation();
}
}
/*********************************************************************/
// This normalizes EE type information into the form expected by the JIT.
//
// If typeHnd contains exact type information, then *clsRet will contain
// the normalized CORINFO_CLASS_HANDLE information on return.
// Static
CorInfoType CEEInfo::asCorInfoType(CorElementType eeType,
TypeHandle typeHnd, /* optional in */
CORINFO_CLASS_HANDLE *clsRet/* optional out */ ) {
CONTRACT(CorInfoType) {
THROWS;
GC_TRIGGERS;
PRECONDITION((CorTypeInfo::IsGenericVariable(eeType)) ==
(!typeHnd.IsNull() && typeHnd.IsGenericVariable()));
PRECONDITION(eeType != ELEMENT_TYPE_GENERICINST);
} CONTRACT_END;
TypeHandle typeHndUpdated = typeHnd;
if (!typeHnd.IsNull())
{
CorElementType normType = typeHnd.GetInternalCorElementType();
// If we have a type handle, then it has the better type
// in some cases
if (eeType == ELEMENT_TYPE_VALUETYPE && !CorTypeInfo::IsObjRef(normType))
eeType = normType;
// Zap the typeHnd when the type _really_ is a primitive
// as far as verification is concerned. Returning a null class
// handle means it is is a primitive.
//
// Enums are exactly like primitives, even from a verification standpoint,
// so we zap the type handle in this case.
//
// However RuntimeTypeHandle etc. are reported as E_T_INT (or something like that)
// but don't count as primitives as far as verification is concerned...
//
// To make things stranger, TypedReference returns true for "IsTruePrimitive".
// However the JIT likes us to report the type handle in that case.
if (!typeHnd.IsTypeDesc() && (
(typeHnd.AsMethodTable()->IsTruePrimitive() && typeHnd != TypeHandle(g_TypedReferenceMT))
|| typeHnd.AsMethodTable()->IsEnum()) )
{
typeHndUpdated = TypeHandle();
}
}
static const BYTE map[] = {
CORINFO_TYPE_UNDEF,
CORINFO_TYPE_VOID,
CORINFO_TYPE_BOOL,
CORINFO_TYPE_CHAR,
CORINFO_TYPE_BYTE,
CORINFO_TYPE_UBYTE,
CORINFO_TYPE_SHORT,
CORINFO_TYPE_USHORT,
CORINFO_TYPE_INT,
CORINFO_TYPE_UINT,
CORINFO_TYPE_LONG,
CORINFO_TYPE_ULONG,
CORINFO_TYPE_FLOAT,
CORINFO_TYPE_DOUBLE,
CORINFO_TYPE_STRING,
CORINFO_TYPE_PTR, // PTR
CORINFO_TYPE_BYREF,
CORINFO_TYPE_VALUECLASS,
CORINFO_TYPE_CLASS,
CORINFO_TYPE_VAR, // VAR (type variable)
CORINFO_TYPE_CLASS, // ARRAY
CORINFO_TYPE_CLASS, // WITH
CORINFO_TYPE_REFANY,
CORINFO_TYPE_UNDEF, // VALUEARRAY_UNSUPPORTED
CORINFO_TYPE_NATIVEINT, // I
CORINFO_TYPE_NATIVEUINT, // U
CORINFO_TYPE_UNDEF, // R_UNSUPPORTED
// put the correct type when we know our implementation
CORINFO_TYPE_PTR, // FNPTR
CORINFO_TYPE_CLASS, // OBJECT
CORINFO_TYPE_CLASS, // SZARRAY
CORINFO_TYPE_VAR, // MVAR
CORINFO_TYPE_UNDEF, // CMOD_REQD
CORINFO_TYPE_UNDEF, // CMOD_OPT
CORINFO_TYPE_UNDEF, // INTERNAL
};
_ASSERTE(sizeof(map) == ELEMENT_TYPE_MAX);
_ASSERTE(eeType < (CorElementType) sizeof(map));
// spot check of the map
_ASSERTE((CorInfoType) map[ELEMENT_TYPE_I4] == CORINFO_TYPE_INT);
_ASSERTE((CorInfoType) map[ELEMENT_TYPE_PTR] == CORINFO_TYPE_PTR);
_ASSERTE((CorInfoType) map[ELEMENT_TYPE_TYPEDBYREF] == CORINFO_TYPE_REFANY);
CorInfoType res = (eeType < ELEMENT_TYPE_MAX) ? ((CorInfoType) map[eeType]) : CORINFO_TYPE_UNDEF;
if (clsRet)
*clsRet = CORINFO_CLASS_HANDLE(typeHndUpdated.AsPtr());
RETURN res;
}
inline static CorInfoType toJitType(TypeHandle typeHnd, CORINFO_CLASS_HANDLE *clsRet = NULL)
{
WRAPPER_NO_CONTRACT;
return CEEInfo::asCorInfoType(typeHnd.GetInternalCorElementType(), typeHnd, clsRet);
}
#ifdef _DEBUG
void DebugSecurityCalloutStress(CORINFO_METHOD_HANDLE methodBeingCompiledHnd,
CorInfoIsAccessAllowedResult& currentAnswer,
CorInfoSecurityRuntimeChecks& currentRuntimeChecks)
{
WRAPPER_NO_CONTRACT;
if (currentAnswer != CORINFO_ACCESS_ALLOWED)
{
return;
}
static ConfigDWORD AlwaysInsertCallout;
switch (AlwaysInsertCallout.val(CLRConfig::INTERNAL_Security_AlwaysInsertCallout))
{
case 0: //No stress
return;
case 1: //Always
break;
default: //2 (or anything else), do so half the time
if (((size_t(methodBeingCompiledHnd) / sizeof(void*)) % 64) < 32)
return;
}
//Do the stress
currentAnswer = CORINFO_ACCESS_RUNTIME_CHECK;
currentRuntimeChecks = CORINFO_ACCESS_SECURITY_NONE;
}
#else
#define DebugSecurityCalloutStress(a, b, c) do {} while(0)
#endif //_DEBUG
void CheckForEquivalenceAndLoadTypeBeforeCodeIsRun(Module *pModule, mdToken token, Module *pDefModule, mdToken defToken, const SigParser *ptr, SigTypeContext *pTypeContext, void *pData)
{
CONTRACTL
{
THROWS;
GC_TRIGGERS;
SO_INTOLERANT;
}
CONTRACTL_END;
if (IsTypeDefEquivalent(defToken, pDefModule))
{
SigPointer sigPtr(*ptr);
TypeHandle th = sigPtr.GetTypeHandleThrowing(pModule, pTypeContext);
((ICorDynamicInfo *)pData)->classMustBeLoadedBeforeCodeIsRun(CORINFO_CLASS_HANDLE(th.AsPtr()));
}
}
inline static void TypeEquivalenceFixupSpecificationHelper(ICorDynamicInfo * pCorInfo, MethodDesc *pMD)
{
STANDARD_VM_CONTRACT;
// A fixup is necessary to ensure that the parameters to the method are loaded before the method
// is called. In these cases we will not perform the appropriate loading when we load parameter
// types because with type equivalence, the parameter types at the call site do not necessarily
// match that those in the actual function. (They must be equivalent, but not necessarily the same.)
// In non-ngen scenarios this code here will force the types to be loaded directly by the call to
// HasTypeEquivalentStructParameters.
if (!pMD->IsVirtual())
{
if (pMD->HasTypeEquivalentStructParameters())
{
if (IsCompilationProcess())
pMD->WalkValueTypeParameters(pMD->GetMethodTable(), CheckForEquivalenceAndLoadTypeBeforeCodeIsRun, pCorInfo);
}
}
else
{
if (pMD->GetMethodTable()->DependsOnEquivalentOrForwardedStructs())
{
if (pMD->HasTypeEquivalentStructParameters())
pCorInfo->classMustBeLoadedBeforeCodeIsRun((CORINFO_CLASS_HANDLE)pMD->GetMethodTable());
}
}
}
//---------------------------------------------------------------------------------------
//
//@GENERICS:
// The method handle is used to instantiate method and class type parameters
// It's also used to determine whether an extra dictionary parameter is required
//
// sig - Input metadata signature
// scopeHnd - The signature is to be interpreted in the context of this scope (module)
// token - Metadata token used to refer to the signature (may be mdTokenNil for dynamic methods)
// sigRet - Resulting output signature in a format that is understood by native compilers
// pContextMD - The method with any instantiation information (may be NULL)
// localSig - Is it a local variables declaration, or a method signature (with return type, etc).
// contextType - The type with any instantiaton information
//
//static
void
CEEInfo::ConvToJitSig(
PCCOR_SIGNATURE pSig,
DWORD cbSig,
CORINFO_MODULE_HANDLE scopeHnd,
mdToken token,
CORINFO_SIG_INFO * sigRet,
MethodDesc * pContextMD,
bool localSig,
TypeHandle contextType)
{
CONTRACTL {
THROWS;
GC_TRIGGERS;
} CONTRACTL_END;
SigTypeContext typeContext;
if (pContextMD)
{
SigTypeContext::InitTypeContext(pContextMD, contextType, &typeContext);
}
else
{
SigTypeContext::InitTypeContext(contextType, &typeContext);
}
_ASSERTE(CORINFO_CALLCONV_DEFAULT == (CorInfoCallConv) IMAGE_CEE_CS_CALLCONV_DEFAULT);
_ASSERTE(CORINFO_CALLCONV_VARARG == (CorInfoCallConv) IMAGE_CEE_CS_CALLCONV_VARARG);
_ASSERTE(CORINFO_CALLCONV_MASK == (CorInfoCallConv) IMAGE_CEE_CS_CALLCONV_MASK);
_ASSERTE(CORINFO_CALLCONV_HASTHIS == (CorInfoCallConv) IMAGE_CEE_CS_CALLCONV_HASTHIS);
TypeHandle typeHnd = TypeHandle();
sigRet->pSig = pSig;
sigRet->cbSig = cbSig;
sigRet->retTypeClass = 0;
sigRet->retTypeSigClass = 0;
sigRet->scope = scopeHnd;
sigRet->token = token;
sigRet->sigInst.classInst = (CORINFO_CLASS_HANDLE *) typeContext.m_classInst.GetRawArgs();
sigRet->sigInst.classInstCount = (unsigned) typeContext.m_classInst.GetNumArgs();
sigRet->sigInst.methInst = (CORINFO_CLASS_HANDLE *) typeContext.m_methodInst.GetRawArgs();
sigRet->sigInst.methInstCount = (unsigned) typeContext.m_methodInst.GetNumArgs();
SigPointer sig(pSig, cbSig);
if (!localSig)
{
// This is a method signature which includes calling convention, return type,
// arguments, etc
_ASSERTE(!sig.IsNull());
Module * module = GetModule(scopeHnd);
sigRet->flags = 0;
ULONG data;
IfFailThrow(sig.GetCallingConvInfo(&data));
sigRet->callConv = (CorInfoCallConv) data;
#if defined(FEATURE_CORECLR)
if ((isCallConv(sigRet->callConv, IMAGE_CEE_CS_CALLCONV_VARARG)) ||
(isCallConv(sigRet->callConv, IMAGE_CEE_CS_CALLCONV_NATIVEVARARG)))
{
// This signature corresponds to a method that uses varargs, which are not supported.
COMPlusThrow(kInvalidProgramException, IDS_EE_VARARG_NOT_SUPPORTED);
}
#endif // FEATURE_CORECLR
// Skip number of type arguments
if (sigRet->callConv & IMAGE_CEE_CS_CALLCONV_GENERIC)
IfFailThrow(sig.GetData(NULL));
ULONG numArgs;
IfFailThrow(sig.GetData(&numArgs));
if (numArgs != (unsigned short) numArgs)
COMPlusThrowHR(COR_E_INVALIDPROGRAM);
sigRet->numArgs = (unsigned short) numArgs;
CorElementType type = sig.PeekElemTypeClosed(module, &typeContext);
if (!CorTypeInfo::IsPrimitiveType(type))
{
typeHnd = sig.GetTypeHandleThrowing(module, &typeContext);
_ASSERTE(!typeHnd.IsNull());
// I believe it doesn't make any diff. if this is
// GetInternalCorElementType or GetSignatureCorElementType
type = typeHnd.GetSignatureCorElementType();
}
sigRet->retType = CEEInfo::asCorInfoType(type, typeHnd, &sigRet->retTypeClass);
sigRet->retTypeSigClass = CORINFO_CLASS_HANDLE(typeHnd.AsPtr());
IfFailThrow(sig.SkipExactlyOne()); // must to a skip so we skip any class tokens associated with the return type
_ASSERTE(sigRet->retType < CORINFO_TYPE_COUNT);
sigRet->args = (CORINFO_ARG_LIST_HANDLE)sig.GetPtr();
}
else
{
// This is local variables declaration
sigRet->callConv = CORINFO_CALLCONV_DEFAULT;
sigRet->retType = CORINFO_TYPE_VOID;
sigRet->flags = CORINFO_SIGFLAG_IS_LOCAL_SIG;
sigRet->numArgs = 0;
if (!sig.IsNull())
{
ULONG callConv;
IfFailThrow(sig.GetCallingConvInfo(&callConv));
if (callConv != IMAGE_CEE_CS_CALLCONV_LOCAL_SIG)
{
COMPlusThrowHR(COR_E_BADIMAGEFORMAT, BFA_CALLCONV_NOT_LOCAL_SIG);
}
ULONG numArgs;
IfFailThrow(sig.GetData(&numArgs));
if (numArgs != (unsigned short) numArgs)
COMPlusThrowHR(COR_E_INVALIDPROGRAM);
sigRet->numArgs = (unsigned short) numArgs;
}
sigRet->args = (CORINFO_ARG_LIST_HANDLE)sig.GetPtr();
}
_ASSERTE(SigInfoFlagsAreValid(sigRet));
} // CEEInfo::ConvToJitSig
//---------------------------------------------------------------------------------------
//
CORINFO_CLASS_HANDLE CEEInfo::getTokenTypeAsHandle (CORINFO_RESOLVED_TOKEN * pResolvedToken)
{
CONTRACTL {
SO_TOLERANT;
THROWS;
GC_TRIGGERS;
MODE_PREEMPTIVE;
} CONTRACTL_END;
CORINFO_CLASS_HANDLE tokenType = NULL;
JIT_TO_EE_TRANSITION();
_ASSERTE((pResolvedToken->hMethod == NULL) || (pResolvedToken->hField == NULL));
BinderClassID classID = CLASS__TYPE_HANDLE;
if (pResolvedToken->hMethod != NULL)
{
classID = CLASS__METHOD_HANDLE;
}
else
if (pResolvedToken->hField != NULL)
{
classID = CLASS__FIELD_HANDLE;
}
tokenType = CORINFO_CLASS_HANDLE(MscorlibBinder::GetClass(classID));
EE_TO_JIT_TRANSITION();
return tokenType;
}
/*********************************************************************/
size_t CEEInfo::findNameOfToken (
CORINFO_MODULE_HANDLE scopeHnd,
mdToken metaTOK,
__out_ecount (FQNameCapacity) char * szFQName,
size_t FQNameCapacity)
{
CONTRACTL {
SO_TOLERANT;
THROWS;
GC_TRIGGERS;
MODE_PREEMPTIVE;
} CONTRACTL_END;
size_t NameLen = 0;
JIT_TO_EE_TRANSITION();
if (IsDynamicScope(scopeHnd))
{
strncpy_s (szFQName, FQNameCapacity, "DynamicToken", FQNameCapacity - 1);
NameLen = strlen (szFQName);
}
else
{
Module* module = (Module *)scopeHnd;
NameLen = findNameOfToken(module, metaTOK, szFQName, FQNameCapacity);
}
EE_TO_JIT_TRANSITION();
return NameLen;
}
CorInfoCanSkipVerificationResult CEEInfo::canSkipMethodVerification(CORINFO_METHOD_HANDLE ftnHnd)
{
CONTRACTL {
SO_TOLERANT;
THROWS;
GC_TRIGGERS;
MODE_PREEMPTIVE;
} CONTRACTL_END;
CorInfoCanSkipVerificationResult canSkipVerif = CORINFO_VERIFICATION_CANNOT_SKIP;
JIT_TO_EE_TRANSITION();
MethodDesc* pMD = GetMethod(ftnHnd);
#ifdef _DEBUG
if (g_pConfig->IsVerifierOff())
{
canSkipVerif = CORINFO_VERIFICATION_CAN_SKIP;
}
else
#endif // _DEBUG
{
canSkipVerif = Security::JITCanSkipVerification(pMD);
}
EE_TO_JIT_TRANSITION();
return canSkipVerif;
}
/*********************************************************************/
BOOL CEEInfo::shouldEnforceCallvirtRestriction(
CORINFO_MODULE_HANDLE scopeHnd)
{
LIMITED_METHOD_CONTRACT;
// see vsw 599197
// verification rule added in whidbey requiring virtual methods
// to be called via callvirt except if certain other rules are
// obeyed.
if (g_pConfig->LegacyVirtualMethodCallVerification())
return false;
else
return true;
}
#ifdef FEATURE_READYTORUN_COMPILER
// Returns true if assemblies are in the same version bubble
// Right now each assembly is in its own version bubble.
// If the need arises (i.e. performance issues) we will define sets of assemblies (e.g. all app assemblies)
// The main point is that all this logic is concentrated in one place.
bool IsInSameVersionBubble(Assembly * current, Assembly * target)
{
LIMITED_METHOD_CONTRACT;
// trivial case: current and target are identical
if (current == target)
return true;
return false;
}
// Returns true if the assemblies defining current and target are in the same version bubble
static bool IsInSameVersionBubble(MethodDesc* pCurMD, MethodDesc *pTargetMD)
{
LIMITED_METHOD_CONTRACT;
if (IsInSameVersionBubble(pCurMD->GetModule()->GetAssembly(),
pTargetMD->GetModule()->GetAssembly()))
{
return true;
}
if (IsReadyToRunCompilation())
{
if (pTargetMD->GetModule()->GetMDImport()->GetCustomAttributeByName(pTargetMD->GetMemberDef(),
NONVERSIONABLE_TYPE, NULL, NULL) == S_OK)
{
return true;
}
}
return false;
}
#endif // FEATURE_READYTORUN_COMPILER
/*********************************************************************/
CorInfoCanSkipVerificationResult CEEInfo::canSkipVerification(
CORINFO_MODULE_HANDLE moduleHnd)
{
CONTRACTL {
SO_TOLERANT;
THROWS;
GC_TRIGGERS;
MODE_PREEMPTIVE;
} CONTRACTL_END;
CorInfoCanSkipVerificationResult canSkipVerif = CORINFO_VERIFICATION_CANNOT_SKIP;
JIT_TO_EE_TRANSITION();
Assembly * pAssem = GetModule(moduleHnd)->GetAssembly();
#ifdef _DEBUG
if (g_pConfig->IsVerifierOff())
{
canSkipVerif = CORINFO_VERIFICATION_CAN_SKIP;
}
else
#endif // _DEBUG
{
//
// fQuickCheckOnly is set only by calls from Zapper::CompileAssembly
// because that allows us make a determination for the most
// common full trust scenarios (local machine) without actually
// resolving policy and bringing in a whole list of assembly
// dependencies.
//
// The scenario of interest here is determing whether or not an
// assembly MVID comparison is enough when loading an NGEN'd
// assembly or if a full binary hash comparison must be done.
//
DomainAssembly * pAssembly = pAssem->GetDomainAssembly();
canSkipVerif = Security::JITCanSkipVerification(pAssembly);
}
EE_TO_JIT_TRANSITION();
return canSkipVerif;
}
/*********************************************************************/
// Checks if the given metadata token is valid
BOOL CEEInfo::isValidToken (
CORINFO_MODULE_HANDLE module,
mdToken metaTOK)
{
CONTRACTL {
SO_TOLERANT;
NOTHROW;
GC_NOTRIGGER;
MODE_ANY;
} CONTRACTL_END;
BOOL result = FALSE;
JIT_TO_EE_TRANSITION_LEAF();
if (IsDynamicScope(module))
{
// No explicit token validation for dynamic code. Validation is
// side-effect of token resolution.
result = TRUE;
}
else
{
result = ((Module *)module)->GetMDImport()->IsValidToken(metaTOK);
}
EE_TO_JIT_TRANSITION_LEAF();
return result;
}
/*********************************************************************/
// Checks if the given metadata token is valid StringRef
BOOL CEEInfo::isValidStringRef (
CORINFO_MODULE_HANDLE module,
mdToken metaTOK)
{
CONTRACTL {
SO_TOLERANT;
THROWS;
GC_TRIGGERS;
MODE_PREEMPTIVE;
} CONTRACTL_END;
BOOL result = FALSE;
JIT_TO_EE_TRANSITION();
if (IsDynamicScope(module))
{
result = GetDynamicResolver(module)->IsValidStringRef(metaTOK);
}
else
{
result = ((Module *)module)->CheckStringRef(metaTOK);
if (result)
{
DWORD dwCharCount;
LPCWSTR pString;
result = (!FAILED(((Module *)module)->GetMDImport()->GetUserString(metaTOK, &dwCharCount, NULL, &pString)) &&
pString != NULL);
}
}
EE_TO_JIT_TRANSITION();
return result;
}
/* static */
size_t CEEInfo::findNameOfToken (Module* module,
mdToken metaTOK,
__out_ecount (FQNameCapacity) char * szFQName,
size_t FQNameCapacity)
{
CONTRACTL {
NOTHROW;
GC_TRIGGERS;
} CONTRACTL_END;
#ifdef _DEBUG
PCCOR_SIGNATURE sig = NULL;
DWORD cSig;
LPCUTF8 pszNamespace = NULL;
LPCUTF8 pszClassName = NULL;
mdToken tokType = TypeFromToken(metaTOK);
switch(tokType)
{
case mdtTypeRef:
{
if (FAILED(module->GetMDImport()->GetNameOfTypeRef(metaTOK, &pszNamespace, &pszClassName)))
{
pszNamespace = pszClassName = "Invalid TypeRef record";
}
ns::MakePath(szFQName, (int)FQNameCapacity, pszNamespace, pszClassName);
break;
}
case mdtTypeDef:
{
if (FAILED(module->GetMDImport()->GetNameOfTypeDef(metaTOK, &pszClassName, &pszNamespace)))
{
pszClassName = pszNamespace = "Invalid TypeDef record";
}
ns::MakePath(szFQName, (int)FQNameCapacity, pszNamespace, pszClassName);
break;
}
case mdtFieldDef:
{
LPCSTR szFieldName;
if (FAILED(module->GetMDImport()->GetNameOfFieldDef(metaTOK, &szFieldName)))
{
szFieldName = "Invalid FieldDef record";
}
strncpy_s(szFQName, FQNameCapacity, (char*)szFieldName, FQNameCapacity - 1);
break;
}
case mdtMethodDef:
{
LPCSTR szMethodName;
if (FAILED(module->GetMDImport()->GetNameOfMethodDef(metaTOK, &szMethodName)))
{
szMethodName = "Invalid MethodDef record";
}
strncpy_s(szFQName, FQNameCapacity, (char*)szMethodName, FQNameCapacity - 1);
break;
}
case mdtMemberRef:
{
LPCSTR szName;
if (FAILED(module->GetMDImport()->GetNameAndSigOfMemberRef((mdMemberRef)metaTOK, &sig, &cSig, &szName)))
{
szName = "Invalid MemberRef record";
}
strncpy_s(szFQName, FQNameCapacity, (char *)szName, FQNameCapacity - 1);
break;
}
default:
sprintf_s(szFQName, FQNameCapacity, "!TK_%x", metaTOK);
break;
}
#else // !_DEBUG
strncpy_s (szFQName, FQNameCapacity, "<UNKNOWN>", FQNameCapacity - 1);
#endif // _DEBUG
return strlen (szFQName);
}
CorInfoHelpFunc CEEInfo::getLazyStringLiteralHelper(CORINFO_MODULE_HANDLE handle)
{
CONTRACTL {
SO_TOLERANT;
NOTHROW;
GC_NOTRIGGER;
MODE_PREEMPTIVE;
} CONTRACTL_END;
CorInfoHelpFunc result = CORINFO_HELP_UNDEF;
JIT_TO_EE_TRANSITION_LEAF();
result = IsDynamicScope(handle) ? CORINFO_HELP_UNDEF : CORINFO_HELP_STRCNS;
EE_TO_JIT_TRANSITION_LEAF();
return result;
}
CHECK CheckContext(CORINFO_MODULE_HANDLE scopeHnd, CORINFO_CONTEXT_HANDLE context)
{
CHECK_MSG(scopeHnd != NULL, "Illegal null scope");
CHECK_MSG(((size_t) context & ~CORINFO_CONTEXTFLAGS_MASK) != NULL, "Illegal null context");
if (((size_t) context & CORINFO_CONTEXTFLAGS_MASK) == CORINFO_CONTEXTFLAGS_CLASS)
{