Date: Sun, 30 Oct 2005 21:29:59 +0000 (UTC) From: Peter Grehan <grehan@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/powerpc/powerpc locore.S ofw_machdep.c Message-ID: <200510302129.j9ULTxnu077119@repoman.freebsd.org>
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grehan 2005-10-30 21:29:59 UTC
FreeBSD src repository
Modified files:
sys/powerpc/powerpc locore.S ofw_machdep.c
Log:
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.
reported by: many
MFC after: 3 days
Revision Changes Path
1.22 +11 -2 src/sys/powerpc/powerpc/locore.S
1.14 +46 -4 src/sys/powerpc/powerpc/ofw_machdep.c
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