This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: Question about libffi closure


>>>>> Andreas Jaeger writes:

Andreas> Should we do instead of:

Andreas> static ffi_closure cl;
Andreas> ffi_closure *pcl =3D &cl;

Andreas> use:
Andreas> ffi_closure *pcl;

Andreas> pcl = mmap (NULL, sizeof(ffi_closure), PROT_READ|PROT_EXEC,
Andreas> MAP_PRIVATE|MAP_ANONYMOUS, fd, 0);

Andreas> Ok, I'll try to change the testsuite...

	And the above is more portable because...?  libffi is used by more
than just GNU/Linux.

	Also, this area has caused problems on systems when GCC tried to
optimize through the pointer, so you need to test on a large variety of
systems before this can be changed.

David


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]