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| author | Daniel Hellstrom <daniel@gaisler.com> | 2014-11-11 15:18:01 +0100 |
|---|---|---|
| committer | Daniel Hellstrom <daniel@gaisler.com> | 2014-12-02 13:57:20 +0100 |
| commit | 0d3b5d47429effb350448d9e9123a67db722109f (patch) | |
| tree | 589e3d1b674275049739d8ca6c686c979d0e4ad1 /c/src/lib/libbsp/sparc/leon3/include/leon.h | |
| parent | SPARC: optimize window overflow trap entry (diff) | |
| download | rtems-0d3b5d47429effb350448d9e9123a67db722109f.tar.bz2 | |
SPARC: optimize window underflow trap
Save five instructions on underflow handling.
By using an optimized trap entry we can move instructions from
the window underflow function into the trap entry vector. By
setting WIM=0 and using RESTORE it is possible to move the
new WIM register content from the trapped window into the
to-be-restored register window. It is then possible to avoid
the WIM write delay.
Diffstat (limited to 'c/src/lib/libbsp/sparc/leon3/include/leon.h')
0 files changed, 0 insertions, 0 deletions