On Tue, Feb 19, 2002 at 11:32:22PM -0500, Daniel Jacobowitz wrote: > > If you do use floating point, I think it is pretty common to have > > only process that uses fpu and runs for very long. In that case, > > leaving FPU owned by the process also saves quite a bit. > > Not true. For instance, on a processor with hardware FPU, setjmp() > will save FPU registers. That means most processes will actually end > up taking the FPU at least once. The cleassic reason to take the FPU is the ctc1 $0, $31 instruction used to initalize the FPU control register rsp. it's equivalent on other architectures. This should be fixed in glibc since a few years. Ralf
