grehan 2005-11-11 05:21:08 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_6)
sys/powerpc/powerpc locore.S ofw_machdep.c
Log:
MFC locore.S:r.1.22, ofw_machdep.c:1.14
> Copy SPRG0-3 registers at boot-time and restore when calling into
> OpenFirmware. FreeBSD/ppc uses SPRG0 as the per-cpu data area pointer,
> and SPRG1-3 as temporary registers during exception handling. There
> have been a few instances where OpenFirmware does require these to
> be part of it's context, such as cd-booting an eMac.
Revision Changes Path
1.21.2.1 +11 -2 src/sys/powerpc/powerpc/locore.S
1.13.2.1 +46 -4 src/sys/powerpc/powerpc/ofw_machdep.c
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