C++ and Assembly: call 'operator new' and 'operator delete' with ASM

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I am trying to call operator new and operator delete with inline ASM in Visual C++.

For example, I have a function like this:

__forceinline void __fastcall deallocate(pointer& _ptr)
{
    __asm
    {
        mov eax, dword ptr[_ptr]
        mov ecx, dword ptr[eax]
        mov dword ptr[eax], 0
        push ecx
        call operator delete
        add esp, 4
    }
}

Unfortunately, when compiling, I get these errors:

error C2414: illegal number of operands
error C2400: inline assembler syntax error in 'first operand'; found 'bad token'
error C2400: inline assembler syntax error in 'opcode'; found 'bad token'

I know this has to do with calling operator delete. If I replace it with a function like this:

__forceinline void _delete(pointer _ptr)
{
    ::operator delete(_ptr);
}

and write

call _delete

in the ASM code section, I get no errors. Can anybody tell me why and what should I do? I don't want to use this _delete function. This also happens if I try calling operator new in a similar manner. Thank you.

asked 19 secs ago

Victor Gabriel Ungureanu

5

C++ and Assembly: call 'operator new' and 'operator delete' with ASM