Fix 64-bit calling convention on Windows #98
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On 64-bit,
va_arg
does not pass in all arguments via stack, instead some are passed in via registers. GCC/Clang expand these correctly to the argument list, but MSVC does some funky shit and would require some manual macro hell to correctly expand the arguments from registers to theva_arg
call. By doingVM_Call
like this, we avoid passing in random integers to mod invmMain
arguments.https://blog.nelhage.com/2010/10/amd64-and-va_arg/