diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2011-06-18 20:59:24 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-06-18 20:59:24 +0000 |
| commit | 99dcc4dc6501c726df79173fa254faebc68a486d (patch) | |
| tree | 7b6f02f91d68dbd0e7627569a616a75bd72a5ae4 /sim/bfin/ChangeLog | |
| parent | 4bd2c0c31ccea3032031648e7497bb7d1c04cc39 (diff) | |
| download | gdb-99dcc4dc6501c726df79173fa254faebc68a486d.zip gdb-99dcc4dc6501c726df79173fa254faebc68a486d.tar.gz gdb-99dcc4dc6501c726df79173fa254faebc68a486d.tar.bz2 | |
sim: bfin: handle odd shift values with shift insns
The shift magnitude is a 5-bit signed value. When it is between 0 and
15, then we do the requested shift, but when it is outside of that, we
have to do the opposite.
That means we flip between lshift and ashiftrt to match the hardware.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'sim/bfin/ChangeLog')
| -rw-r--r-- | sim/bfin/ChangeLog | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sim/bfin/ChangeLog b/sim/bfin/ChangeLog index ffd9ff2..c702981 100644 --- a/sim/bfin/ChangeLog +++ b/sim/bfin/ChangeLog @@ -1,5 +1,12 @@ 2011-06-18 Robin Getz <robin.getz@analog.com> + * bfin-sim.c (decode_dsp32shiftimm_0): With left shift vector insns, + call lshift only when count is positive. Otherwise, call ashiftrt. + With arithmetic right shift insns, call ashiftrt when the value is + small enough, otherwise call lshift. + +2011-06-18 Robin Getz <robin.getz@analog.com> + * bfin-sim.c (extract_mult): Call saturate_s16 directly when mmod is M_IH rather than computing the result by hand. |