Hi Ralf, On Tue, Aug 17, 2021 at 1:55 PM Ralf Baechle <ralf@xxxxxxxxxxxxxx> wrote: > > On Tue, Aug 17, 2021 at 12:54:32PM +0100, Sudip Mukherjee wrote: > > > While I was testing v5.4.142-rc2 I noticed mips build of > > decstation_r4k_defconfig fails with binutils-2_37. The error is: > > > > arch/mips/dec/prom/locore.S: Assembler messages: > > arch/mips/dec/prom/locore.S:29: Error: opcode not supported on this > > processor: r4600 (mips3) `rfe' > > > > I have also reported this at https://sourceware.org/bugzilla/show_bug.cgi?id=28241 > > It would appear gas got more anal about ISA checking for the RFE instructions > which did only exist in MIPS I and II; MIPS III and later use ERET for > returning from an exception. > > The older gas I've got installed here happily accepts RFE in MIPS III/R4000 > mode: > <snip> > > It's easy to find arguments for why this gas change is the right thing to > do - and not the right thing to do. > > It should be fixable by simply putting gas into mips1 mode. Can you test > below patch? Tested on top of v5.4.142-rc2 and it builds again. Thanks for the quick reply and the patch. -- Regards Sudip
