David Daney wrote:
Austin, Alex wrote:
That's all about unpacking an arglist.
No, it does both 'packing' and 'unpacking'.
I need to pack an arglist. Also, the function in question isn't
actually printf, but a custom API, and it doesn't have a vprintf
equivalent.
If your architecture is supported by libffi, and the vargs ABI is the
same as the ABI for fixed args, libffi should do exactly what you need.
David Daney
Whatever you do, don't try to use __builtin_apply. It's busted on
x86-64. This is why the Objective-C runtime is broken out of the box on
x86-64. The only reason Objective-C works for the GnuStep project is
they are using hooks in the runtime to replace calls to __builtin_apply
with calls to libffi in their runtime.
