Date: Wed, 10 Jun 1998 22:03:49 -0700 From: Mike Smith <mike@smith.net.au> To: Luigi Rizzo <luigi@labinfo.iet.unipi.it> Cc: current@FreeBSD.ORG Subject: Re: floating point usage within the kernel - howto ? Message-ID: <199806110503.WAA00904@antipodes.cdrom.com> In-Reply-To: Your message of "Wed, 10 Jun 1998 14:39:03 %2B0200." <199806101239.OAA19796@labinfo.iet.unipi.it>
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> a local user has a need to do some Floating Point computations within > the kernel. I think this is not possible without explicitly > saving&restoring the FP register around the task, is this correct ? > And if this is true, is there any trick/asm routine to call to do the > saving & restoring of the registers ? The simple answer is "don't do it". You might try '-msoft-float' as a compiler option, but it'd be better just to come up with a fixed-point or manually-coded floating point implementation. What do they want to do FP in the kernel for anyway? -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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