Some cleanups to the i386 FPU support:

- Remove the control word parameter to npxinit().  It was always set
  to __INITIAL_NPXCW__.
- Remove npx_cleanstate_ready as the cleanstate is always initalized
  when it is used.
- Improve the handling of the case when the FPU isn't present.  Now
  the npx0 device no longer succeeds in its probe so all of npx_attach()
  is skipped.  Also, we allow this case with SMP (though that shouldn't
  actually occur as all i386 systems that support SMP have FPUs) now.
  SMP was only an issue back when we had an FPU emulator which was not
  per-CPU.
- MFamd64: Clear some of the state in npx_cleanstate rather than leaving
  it as garbage.
- MFamd64: When a user thread first uses the FPU, use npx_cleanstate for
  the initial FPU state.

Reviewed by:	bde

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/i386/include/npx.h b/sys/i386/include/npx.h
index 11f1034..e9811b3 100644
--- a/sys/i386/include/npx.h
+++ b/sys/i386/include/npx.h
@@ -151,7 +151,7 @@ void	npxdrop(void);
 void	npxexit(struct thread *td);
 int	npxformat(void);
 int	npxgetregs(struct thread *td, union savefpu *addr);
-void	npxinit(u_short control);
+void	npxinit(void);
 void	npxsave(union savefpu *addr);
 void	npxsetregs(struct thread *td, union savefpu *addr);
 int	npxtrap(void);