Re: CPUs that don't support LL/SC
"M. Warner Losh" <[email protected]> Sun, 04 Aug 2002 20:57:08 -0600 (MDT)
| Newsgroups | gmane.os.netbsd.ports.mips |
|---|---|
| Message-ID | <[email protected]> |
In message: <[email protected]> Simon Burge <[email protected]> writes: : Could folks that know for sure that various models of MIPS cpus _don't_ : support the LL & SC instructions please update the table we have that : describes CPU cababilities? This involves adding the CPU_MIPS_NO_LLSC : flag in the cputab in sys/arch/mips/mips/mips_machdep.c. : : Currently the MIPS1 cpus and the R5900 are listed; I know that some of : the CPUs used in the HPCMIPS devices don't support LL/SC, but I'm not : 100% sure which ones... All the Vr41xx processors defintiely (at least through the 4121 and 4181, not sure about the 4131) do not have LL/SC. I think that the R39xx class of cpus don't have them either. Warner