Where is MethodDesc::Call ??? Framework 4.0

[CodeExplorer]

Where is MethodDesc::Call ??? Framework 4.0

https://www.oreilly.com/library/view/shared-source-cli/059600351X/ch06s02.html

Quote

execution of managed code can be found in MethodDesc::Call, which we discussed in Chapter 5 (and which can be found in sscli/clr/src/vm/method.cpp).

Is not inside method.cpp, in fact I can't find there any method starting with "Call"
Alternatives? Any other simple way of executing .NET methods at low level?
 

[kao]

If you're reading a book from 2003, perhaps you should also look at the source code from that time period.

https://github.com/SSCLI/sscli_20021101/blob/master/clr/src/vm/method.cpp#L522-L531

 

[CodeExplorer]

@kao: Doesn't help, I need to run methods in Framework 4.0 not on old Framework,
in Framework 4.0 that method "MethodDesc::Call" seems to be missing! Alternatives?
 

[BataBo]

@CodeExplorer you can use MethodDesc::GetMultiCallableAddrOfCode function to obtain pointer to the method which you can later invoke,call it with CORINFO_ACCESS_LDFTN and then later on you can invoke the code directly or wrap it up into a managed delagate and invoke like that

Edited December 4, 2022 by BataBo
More clarification

[CodeExplorer]

I did find MethodDesc::CallDescr(), but there is a problem:
dotnet-coreclr-master\src\vm\interpreter.cpp

// The m_argDescs array is constructed in the following "canonical" order:
    // 1. 'this' pointer
    // 2. signature arguments
    // 3. return buffer
    // 4. type parameter -or- vararg cookie
    //
    // argOffsets_ is passed in this order, and serves to establish the offsets to arguments
    // when the interpreter is invoked using the native calling convention (i.e., not directly).
    //
    // When the interpreter is invoked directly, the arguments will appear in the same order
    // and form as arguments passed to MethodDesc::CallDescr().  This ordering is as follows:
    // 1. 'this' pointer
    // 2. return buffer
    // 3. signature arguments
    //
    // MethodDesc::CallDescr() does not support generic parameters or varargs functions. (the problem)

MethodDesc::GetMultiCallableAddrOfCode has no parameter, this calls DoPrestub on that method?
 

[CodeExplorer]

I was wrong, MethodDesc::GetMultiCallableAddrOfCode has one parameter

method.cpp

PCODE MethodDesc::GetMultiCallableAddrOfCode(CORINFO_ACCESS_FLAGS accessFlags /*=CORINFO_ACCESS_LDFTN*/)
{
    CONTRACTL
    {
        THROWS;
        GC_TRIGGERS;
        INJECT_FAULT(COMPlusThrowOM());
    }
    CONTRACTL_END

    PCODE ret = TryGetMultiCallableAddrOfCode(accessFlags);

    if (ret == NULL)
    {
        GCX_COOP();

        // We have to allocate funcptr stub
        ret = GetLoaderAllocator()->GetFuncPtrStubs()->GetFuncPtrStub(this);
    }

    return ret;
}

Unfortunate from what I could see doesn't call DoPrestub!