Ralf Baechle wrote: > > On Mon, May 28, 2001 at 05:34:26PM +0200, Maciej W. Rozycki wrote: > > > > Alright, I rolled my sleeve and digged into IRIX 6.5, and guess what? > > > sysmips() does NOT have MIPS_ATOMIC_SET (2001) on IRIX! See the header below. > > > > I remember Ralf writing of this being a compatibility call with RISC/OS > > (is it the original OS of MIPS, Inc.?), IIRC. Ralf: am I right? > > Yes; this function is also implemented for IRIX 5 which we have some > binary compatibility code for. > Is anybody at all still running IRIX binary on Linux? My impression the compatibility is broken a while back. > > > So apparently MIPS_ATOMIC_SET was invented for Linux only, probably just to > > > implement _test_and_set(). (It would be interesting to see how IRIX > > > implement _test_and_set() on MIPS I machines. However, the machine I > > > have access uses ll/sc instructions). > > I don't recall seeing a _test_and_set() in the IRIX API/ABI. > It is part of SYSV MIPS supplement spec. IRIX 6.5 has it. Jun
