Re: Using float emulator on a system with FPU?

1999-07-22 Thread Martin Cracauer
In [EMAIL PROTECTED], Bruce Evans wrote: I'm going to work on FreeBSD's floating point support, but I need to test my changes on systems using the FPU emulators (non-GPL and GPL). Is there any way to use these emulators on a system that has a hardware FPU? Toggling `npx_exists' using

Re: Proposed floating point changes (Re: Using float emulator on a system with FPU?)

1999-07-22 Thread Douglas Thomas Crosher
+ * The macro to choose one of these values does these steps: 1) Throw + * away status word bits that cannot be masked. 2) Throw away the bits + * currently masked in the control word, assuming the user isn't + * interested in them anymore. 3) Reinsert status word bit 7 (stack Throwing

Re: Using float emulator on a system with FPU?

1999-07-14 Thread Peter Jeremy
Hi Warner, Without commenting on the need to have an emulator in the kernel, doesn't -msoft-float work faster? Yes it does. The kernel has to emulate an 80x87, giving you the following sequence: a) trap to kernel b) decode FP instruction c) fetch operands - possibly including copyin() d)

Re: Using float emulator on a system with FPU?

1999-07-13 Thread Wilko Bulte
As Poul-Henning Kamp wrote ... In message [EMAIL PROTECTED], "Bria I suggested about half a year ago that we should officially desupport non-FPU configurations in 4.0. Unfortunately, my resolution was soundly defeated. Why shouldn't we? Noone uses machines without FPUs anymore. What

Re: Using float emulator on a system with FPU?

1999-07-13 Thread Oliver Fromme
Wilko Bulte wrote in list.freebsd-current: As Poul-Henning Kamp wrote ... In message [EMAIL PROTECTED], "Bria I suggested about half a year ago that we should officially desupport non-FPU configurations in 4.0. Unfortunately, my resolution was soundly defeated. Why

Re: Using float emulator on a system with FPU?

1999-07-12 Thread Julian Elischer
On Mon, 12 Jul 1999, Garrett Wollman wrote: On Mon, 12 Jul 1999 11:28:04 +0200, Martin Cracauer [EMAIL PROTECTED] said: I'm going to work on FreeBSD's floating point support, but I need to test my changes on systems using the FPU emulators (non-GPL and GPL). I suggested about half a

RE: Using float emulator on a system with FPU?

1999-07-12 Thread David Schwartz
Why shouldn't we? Noone uses machines without FPUs anymore. What non-ancient CPU doesn't have an FPU? And we're talking about the i386 family here... Embedded systems, anyone? True, but how late a version do you really want to run on them? I've left even my P60's at FreeBSD-2.x

Re: Using float emulator on a system with FPU?

1999-07-12 Thread Jesper Skriver
On Mon, Jul 12, 1999 at 01:38:57PM -0700, David Schwartz wrote: Why shouldn't we? Noone uses machines without FPUs anymore. What non-ancient CPU doesn't have an FPU? And we're talking about the i386 family here... Embedded systems, anyone? True, but how late a version do

Re: Using float emulator on a system with FPU?

1999-07-12 Thread Alex Zepeda
On Mon, 12 Jul 1999, Brian F. Feldman wrote: Why shouldn't we? Noone uses machines without FPUs anymore. What non-ancient CPU doesn't have an FPU? And we're talking about the i386 family here... I've noticed recently, more and more, Linux is moving into the embedded market quite nicely, and

Re: Using float emulator on a system with FPU?

1999-07-12 Thread Matthew N. Dodd
On Mon, 12 Jul 1999, Brian F. Feldman wrote: Why shouldn't we? Noone uses machines without FPUs anymore. What non-ancient CPU doesn't have an FPU? And we're talking about the i386 family here... I've got a few. -- | Matthew N. Dodd | '78 Datsun 280Z | '75 Volvo 164E | FreeBSD/NetBSD | |