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Date: Sun, 29 May 2005 10:02:32 +0100
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Cc: David Gurvich <david.freebsd@verizon.net>
Subject: Re: Newest loader from CVS not working
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On Sunday 29 May 2005 02:51, Pawel Worach wrote:
> Pawel Worach wrote:
>   > I'm seeing the same thing if CPUTYPE is set to "pentium-m" while
> >
> > "pentium2" works fine. Loader crashes on start, is there a way to
> > make it freeze instead of reset to capture the register dump?
> > Kernel/world works fine with the pentium-m CPUTYPE if booted with
> > loader.old. This in on a IBM T41 with a cpu as detected below.
> >
> > CPU: Intel(R) Pentium(R) M processor 1700MHz (1698.56-MHz 686-class
> > CPU) Origin = "GenuineIntel"  Id = 0x695  Stepping = 5
> > Features=0xa7e9f9bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,SEP,MTRR,PGE,MCA
> >,CMOV,PAT,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,TM,PBE>
> >
> > Features2=0x180<EST,TM2>
>
> I did some more investigation into this and found that MMX registers
> are used in the FICL code in the pentium-m case. Here is a full diff
> of sys/boot built with CPUTYPE?=pentium2 and pentium-m.

Sounds like you should add '-mno-sse -mno-mmx' to the compiler flags 
when building this bit.