On 20/06/2014 22:14, Aurelien Jarno wrote: >> In R6 all Floating Point instructions are supposed to be IEEE-2008 compliant >> i.e. FIR.HAS2008 always 1. However, QEMU softfloat for MIPS has not been >> updated yet. > > I don't think we can "update" softfloat. The existing version has to > stay to correctly emulate the existing CPU, and unfortunately things like > the sNaN bit is not even configurable at runtime, but fixed at compile time > (in softfloat-specialize.h). How do you plan to handle that?
I'm aware of this. By "update" softfloat I meant making it configurable at runtime for MIPS depending on FIR.HAS2008, FCSR.NAN2008 and FCSR.ABS2008 flags, so legacy MIPS FPU will be still available for existing CPUs. >> +DEF_HELPER_1(float_class_s, i32, i32) >> +DEF_HELPER_1(float_class_d, i64, i64) >> + >> +DEF_HELPER_2(float_rint_s, i32, env, i32) >> +DEF_HELPER_2(float_rint_d, i64, env, i64) >> + >> +DEF_HELPER_4(float_maddf_s, i32, env, i32, i32, i32) >> +DEF_HELPER_4(float_maddf_d, i64, env, i64, i64, i64) >> + >> +DEF_HELPER_4(float_msubf_s, i32, env, i32, i32, i32) >> +DEF_HELPER_4(float_msubf_d, i64, env, i64, i64, i64) >> + > > Why not using FOP_PROTO here? > I'll correct it. Thanks, Leon
