diff options
| author | Christophe Leroy <[email protected]> | 2020-11-25 07:10:52 +0000 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2020-12-04 01:01:32 +1100 |
| commit | de1cd0790697e67b728de43e8657bb52f528bfb9 (patch) | |
| tree | ab5eed22b35ceaacf8fa6816eec67f8492951c2c /tools/perf/scripts | |
| parent | 6285f9cff570bfd07b542840912c1d01bd5428e0 (diff) | |
powerpc/32s: Use SPRN_SPRG_SCRATCH2 in DSI prolog
Use SPRN_SPRG_SCRATCH2 as an alternative scratch register in
the early part of DSI prolog in order to avoid clobbering
SPRN_SPRG_SCRATCH0/1 used by other prologs.
The 603 doesn't like a jump from DataLoadTLBMiss to the 10 nops
that are now in the beginning of DSI exception as a result of
the feature section. To workaround this, add a jump as alternative.
It also avoids fetching 10 nops for nothing.
Signed-off-by: Christophe Leroy <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/f9f8df2a2be93568768ef1ac793639f7914cf103.1606285014.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'tools/perf/scripts')
0 files changed, 0 insertions, 0 deletions