On 03/17/2010 01:56 AM, Benjamin Herrenschmidt wrote:
Ok, so I -may- be missing something, but I believe this won't break anything: - You keep the existing syscall() exported by glibc for binary compatibility - You add a new __syscall() (or whatever you want to name it) that adds a dummy argument at the beginning, and whose implementation shifts everything by 2 instead of 1 argument before calling into the kernel - You define in unistd.h or whatever is relevant, a macro that does: #define syscall(__sysno, __args..) __syscall(0, _sysno, __args)
Again, this is *exactly* symbol versioning done by hand... we have proper symbol versioning, let's use it.
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