On Fri, 9 Nov 2018, Aleksandar Markovic wrote: > > ... and DMULT, DMULTU, DDIV and DDIVU > > are part of the MIPS III ISA. They are emulated in user mode to support > > generic MIPS III programs. > > Pure MIPS III executables should not be a concern of the R5900 > emulation, but R5900 executables.
I repeat: MIPS III is the available instruction set defined with the base 64-bit MIPS Linux psABI and must not be subsetted. You have to support it in QEMU Linux user emulation mode for any 64-bit MIPS processor and this is not debatable, period. QEMU has no control over the Linux ABI, it has to accept it as it is. Maciej
