On Fri, 26 Jan 2001, Ralf Baechle wrote: > Afaik the only user of MIPS_ATOMIC_SET ever running on Linux/MIPS is the > Linuxthreads code you wrote, so no. Aside of that the semantics of this > syscall were defined by older MIPS operating systems such as Risc/OS and > I think we should follow their example. I still haven't seen a definite spec for the call. Since you suggest the Linuxthreads code is the only user of the code (also remember the _test_and_set library function as specified by the ABI), we might abandon MIPS_ATOMIC_SET and write a _test_and_set syscall instead. No compatibility issues would be involved and the definition is clear in the ABI (the library function would become a simple wrapper). I'm still uncertain if wasting a syscall number is that great idea, but we would be free from any compatibility problems. And yes, I still think an ll/sc emulation could be done independently anyway. Maciej -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
