sim: bfin: handle implicit DISALGNEXCPT with video insns

When most video related insns are used in parallel with Ireg loads, the
DISALGNEXCPT insn behavior is implicitly in effect.

Reported-by: Anton Shokurov <shokurov.anton.v@yandex.ru>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/sim/bfin/ChangeLog b/sim/bfin/ChangeLog
index d20ae6b..7bbd15e 100644 (file)
--- a/sim/bfin/ChangeLog
+++ b/sim/bfin/ChangeLog
@@ -1,3 +1,9 @@
+2011-04-14  Mike Frysinger  <vapier@gentoo.org>
+
+       * bfin-sim.c (decode_dsp32alu_0): Set DIS_ALGN_EXPT when handling
+       BYTEOP2P, BYTEOP3P, SAA, BYTEOP1P, BYTEOP16P, BYTEOP16M, BYTEPACK,
+       and BYTEUNPACK insns.
+
 2011-04-11  Mike Frysinger  <vapier@gentoo.org>
 
        * dv-bfin_sic.c (bfin_sic_port_event): New helper function.

diff --git a/sim/bfin/bfin-sim.c b/sim/bfin/bfin-sim.c
index 27112c6..f1500b0 100644 (file)
--- a/sim/bfin/bfin-sim.c
+++ b/sim/bfin/bfin-sim.c
@@ -4214,6 +4214,9 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1)
       tmp1 = ((((s1 >> 24) & 0xff) + ((s1 >> 16) & 0xff) +
               ((s0 >> 24) & 0xff) + ((s0 >> 16) & 0xff) + i) >> 2) & 0xff;
       SET_DREG (dst0, (tmp1 << (16 + (HL * 8))) | (tmp0 << (HL * 8)));
+
+      /* Implicit DISALGNEXCPT in parallel.  */
+      DIS_ALGN_EXPT |= 1;
     }
   else if ((aop == 0 || aop == 1) && s == 0 && aopcde == 8)
     {
@@ -4330,6 +4333,9 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1)
       tmp1 = (bs32)(bs16)(s0 >> 16) + ((s1 >> (16 + (8 * !HL))) & 0xff);
       SET_DREG (dst0, (CLAMP (tmp0, 0, 255) << ( 0 + (8 * HL))) |
                      (CLAMP (tmp1, 0, 255) << (16 + (8 * HL))));
+
+      /* Implicit DISALGNEXCPT in parallel.  */
+      DIS_ALGN_EXPT |= 1;
     }
   else if ((aop == 0 || aop == 1) && aopcde == 16)
     {
@@ -4779,6 +4785,9 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1)
       STORE (AXREG (0), 0);
       STORE (AWREG (1), (s1H << 16) | (s1L & 0xFFFF));
       STORE (AXREG (1), 0);
+
+      /* Implicit DISALGNEXCPT in parallel.  */
+      DIS_ALGN_EXPT |= 1;
     }
   else if (aop == 3 && aopcde == 18)
     {
@@ -4813,6 +4822,9 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1)
                (((((s0 >>  8) & 0xff) + ((s1 >>  8) & 0xff) + !aop) >> 1) <<  8) |
                (((((s0 >> 16) & 0xff) + ((s1 >> 16) & 0xff) + !aop) >> 1) << 16) |
                (((((s0 >> 24) & 0xff) + ((s1 >> 24) & 0xff) + !aop) >> 1) << 24));
+
+      /* Implicit DISALGNEXCPT in parallel.  */
+      DIS_ALGN_EXPT |= 1;
     }
   else if (aop == 0 && aopcde == 21)
     {
@@ -4845,6 +4857,9 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1)
       SET_DREG (dst1,
                ((((s0 >> 16) & 0xff) + ((s1 >> 16) & 0xff)) <<  0) |
                ((((s0 >> 24) & 0xff) + ((s1 >> 24) & 0xff)) << 16));
+
+      /* Implicit DISALGNEXCPT in parallel.  */
+      DIS_ALGN_EXPT |= 1;
     }
   else if (aop == 1 && aopcde == 21)
     {
@@ -4877,6 +4892,9 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1)
       SET_DREG (dst1,
                (((((s0 >> 16) & 0xff) - ((s1 >> 16) & 0xff)) <<  0) & 0xffff) |
                (((((s0 >> 24) & 0xff) - ((s1 >> 24) & 0xff)) << 16)));
+
+      /* Implicit DISALGNEXCPT in parallel.  */
+      DIS_ALGN_EXPT |= 1;
     }
   else if (aop == 1 && aopcde == 7)
     {
@@ -4973,6 +4991,9 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1)
        (((DREG (src0) >> 16) & 0xff) <<  8) |
        (((DREG (src1) >>  0) & 0xff) << 16) |
        (((DREG (src1) >> 16) & 0xff) << 24));
+
+      /* Implicit DISALGNEXCPT in parallel.  */
+      DIS_ALGN_EXPT |= 1;
     }
   else if (aop == 1 && aopcde == 24)
     {
@@ -4998,6 +5019,9 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1)
       byted = (comb_src >> (24 + 8 * order));
       SET_DREG (dst0, bytea | ((bu32)byteb << 16));
       SET_DREG (dst1, bytec | ((bu32)byted << 16));
+
+      /* Implicit DISALGNEXCPT in parallel.  */
+      DIS_ALGN_EXPT |= 1;
     }
   else if (aopcde == 13)
     {