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Re: port-sgimips/60204: sgimips: arcbios calls require FPU to be enabled



The following reply was made to PR port-sgimips/60204; it has been noted by GNATS.

From: Nick Hudson <nick.hudson%gmx.co.uk@localhost>
To: gnats-bugs%netbsd.org@localhost,
 port-sgimips-maintainer%netbsd.org@localhost,
 gnats-admin%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-sgimips/60204: sgimips: arcbios calls require FPU to be
 enabled
Date: Wed, 22 Apr 2026 18:15:01 +0100

 On 22/04/2026 17:20, adrian%freebsd.org@localhost via gnats wrote:
 
 [snip]
 
 >> Fix:
 > This is a terrible solution to the problem but it demonstrates it =
 working.
 > The real solution likely involves enable/disable FPU routines around =
 the arcbios entry points in sys/dev/arcbios/ .
 > ```
 > diff --git a/sys/arch/mips/mips/locore.S b/sys/arch/mips/mips/locore.S
 > index 6481e9be752cb..22d2869407ac1 100644
 > --- a/sys/arch/mips/mips/locore.S
 > +++ b/sys/arch/mips/mips/locore.S
 > @@ -165,8 +165,10 @@ EXPORT_OBJECT(kernel_text)			=
 # libkvm refers this
 >  	cfc1	t1, MIPS_FIR
 >    	/* Disable again, we don't want it on in the kernel */
 > +#if 0
 >  	and	k0, ~MIPS_SR_COP_1_BIT
 >  	mtc0	k0, MIPS_COP_0_STATUS
 > +#endif
 >  #endif
 >    	INT_S	t0, _C_LABEL(mips_options)+MO_CPU_ID # save PRID =
 register
 > ```
 
 How about this diff?
 



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