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authorMike Frysinger <vapier@gentoo.org>2011-06-18 21:58:08 +0000
committerMike Frysinger <vapier@gentoo.org>2011-06-18 21:58:08 +0000
commitd5fcd950e4f812deac7669190b30efd1781a1266 (patch)
tree60101f87751df65b70b07e99e140c3f91aa4fd45 /sim/bfin
parenta56a195412e4998a0b59d4610aaaec3df55784d2 (diff)
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sim: bfin: do not extend accumulator in LSHIFT insns
The logical shift insn does not sign extend before shifting, so we shouldn't either. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'sim/bfin')
-rw-r--r--sim/bfin/ChangeLog5
-rw-r--r--sim/bfin/bfin-sim.c2
2 files changed, 6 insertions, 1 deletions
diff --git a/sim/bfin/ChangeLog b/sim/bfin/ChangeLog
index 5033c22..4e656d7 100644
--- a/sim/bfin/ChangeLog
+++ b/sim/bfin/ChangeLog
@@ -1,5 +1,10 @@
2011-06-18 Robin Getz <robin.getz@analog.com>
+ * bfin-sim.c (decode_dsp32shift_0): Use get_unextended_acc
+ rather than get_extended_acc in LSHIFT insns.
+
+2011-06-18 Robin Getz <robin.getz@analog.com>
+
* bfin-sim.c (decode_macfunc): Handle MM when mmod is M_TFU.
Check MM once when mmod is M_FU to match M_TFU better.
diff --git a/sim/bfin/bfin-sim.c b/sim/bfin/bfin-sim.c
index 20602b7..2c71f6c 100644
--- a/sim/bfin/bfin-sim.c
+++ b/sim/bfin/bfin-sim.c
@@ -5230,7 +5230,7 @@ decode_dsp32shift_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1)
HLs = !!HLs;
TRACE_INSN (cpu, "A%i = LSHIFT A%i BY R%i.L;", HLs, HLs, src0);
- val = get_extended_acc (cpu, HLs);
+ val = get_unextended_acc (cpu, HLs);
if (shft <= 0)
val = lshiftrt (cpu, val, -shft, 40);