diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2011-03-15 20:10:12 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-03-15 20:10:12 +0000 |
| commit | e3809a37d45651f2a08be03dda0b48275a6e04d8 (patch) | |
| tree | 073bf21bd375759adfce4bf8a7ada4a1d6680ad0 /sim | |
| parent | 86d3d8de687fda121bd8d12a9d0e9f00e7284bf1 (diff) | |
| download | gdb-e3809a37d45651f2a08be03dda0b48275a6e04d8.zip gdb-e3809a37d45651f2a08be03dda0b48275a6e04d8.tar.gz gdb-e3809a37d45651f2a08be03dda0b48275a6e04d8.tar.bz2 | |
sim: bfin: skip acc/ASTAT updates for moves
No point in moving unchanged acc values to the acc regs, and avoid
updating the acc ASTAT bits when only reading. This fixes incorrect
changing of the ASTAT bits when they're only being read.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'sim')
| -rw-r--r-- | sim/bfin/ChangeLog | 4 | ||||
| -rw-r--r-- | sim/bfin/bfin-sim.c | 12 |
2 files changed, 10 insertions, 6 deletions
diff --git a/sim/bfin/ChangeLog b/sim/bfin/ChangeLog index 45bf0a8..deaf615 100644 --- a/sim/bfin/ChangeLog +++ b/sim/bfin/ChangeLog @@ -1,5 +1,9 @@ 2011-03-15 Robin Getz <robin.getz@analog.com> + * bfin-sim.c (decode_macfunc): Move acc STOREs behind op != 3 check. + +2011-03-15 Robin Getz <robin.getz@analog.com> + * bfin-sim.c (decode_macfunc): New neg parameter. Set when the high bit is set after extract_mult. (decode_dsp32mac_0): Declare n_1 and n_0. Pass to the decode_macfunc diff --git a/sim/bfin/bfin-sim.c b/sim/bfin/bfin-sim.c index ba0e0c2..14cf41a 100644 --- a/sim/bfin/bfin-sim.c +++ b/sim/bfin/bfin-sim.c @@ -1662,13 +1662,13 @@ decode_macfunc (SIM_CPU *cpu, int which, int op, int h0, int h1, int src0, if (acc & 0x8000000000ull) *neg = 1; - } - STORE (AXREG (which), (acc >> 32) & 0xff); - STORE (AWREG (which), acc & 0xffffffff); - STORE (ASTATREG (av[which]), sat); - if (sat) - STORE (ASTATREG (avs[which]), sat); + STORE (AXREG (which), (acc >> 32) & 0xff); + STORE (AWREG (which), acc & 0xffffffff); + STORE (ASTATREG (av[which]), sat); + if (sat) + STORE (ASTATREG (avs[which]), sat); + } ret = extract_mult (cpu, acc, mmod, MM, fullword, overflow); |