Patrick Olinet writes: > > > I've compiled again my cross toolchain with the "--with-float=soft" > > > option, hoping that it would emulate FPU instruction, but this > > > unfortunately doesn't help... I'm nevertheless not sure that this > > > option is the right one... > > > > If your entire toolchain is compiled with --with-float=soft, then you > > should use the same options when compiling your code. > > > > > I thought that fpu emulation worked by trapping cpu exceptions when a > fpu instruction is being executed and then emulating this instruction > on software level.
Yes. > Isn't the mechanism implemented by the "--with-float=soft" option ? No. FPU emulation requires no special compile-time options. The whole idea is that it runs the same code as native FP. In contrast, soft-float generates inline subroutine calls for all floating-point operations. Andrew.
