lua-users home
lua-l archive

[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index] [Thread Index]

On 15 February 2018 at 06:40, Thomas Buergel <> wrote:
>> Looks like there was a bug in luaffi when passing parameters to
>> functions on the stack on x86-64 platform. I have not found definitive
>> documentation clarifying this (if anyone can provide a reference that
>> would be very helpful) but it seems that stack arguments must be at 8
>> byte boundaries.
> The two dominant x86-64 calling conventions in an overview:
> For once, the one used on Windows is simpler:
> Especially varargs can be a challenge on the SysV x86-64 ABI:

Thank you - I was aware of the first two references but there doesn't
seem to be a discussion on the requirements of size/alignment of
arguments passed on the stack.

I found following:


Above says:

The size of each argument gets rounded up to eightbytes