Report SIGBUS and halt simulation when ld/st detect a misaligned address.

1 files changed, 44 insertions, 32 deletions

diff --git a/sim/d10v/simops.c b/sim/d10v/simops.c
index 23bc9da..cb0fa56 100644
--- a/sim/d10v/simops.c
+++ b/sim/d10v/simops.c
@@ -118,16 +118,6 @@ move_to_cr (int cr, reg_t mask, reg_t val, int psw_hw_p)
   return val;
 }
 
-/* Modify registers according to an AE - address exception. */
-static void
-address_exception (void)
-{
-  SET_BPC (PC);
-  SET_BPSW (PSW);
-  SET_HW_PSW ((PSW & (PSW_F0_BIT | PSW_F1_BIT | PSW_C_BIT)));
-  JMP (AE_VECTOR_START);
-}
-
 #ifdef DEBUG
 static void trace_input_func PARAMS ((char *name,
 				      enum op_types in1,
@@ -1327,7 +1317,8 @@ OP_30000000 ()
   trace_input ("ld", OP_REG_OUTPUT, OP_MEMREF2, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -1345,7 +1336,8 @@ OP_6401 ()
   trace_input ("ld", OP_REG_OUTPUT, OP_POSTDEC, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -1365,7 +1357,8 @@ OP_6001 ()
   trace_input ("ld", OP_REG_OUTPUT, OP_POSTINC, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -1385,7 +1378,8 @@ OP_6000 ()
   trace_input ("ld", OP_REG_OUTPUT, OP_MEMREF, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -1403,7 +1397,8 @@ OP_32010000 ()
   trace_input ("ld", OP_REG_OUTPUT, OP_MEMREF3, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -1421,7 +1416,8 @@ OP_31000000 ()
   trace_input ("ld2w", OP_REG_OUTPUT, OP_MEMREF2, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -1439,7 +1435,8 @@ OP_6601 ()
   trace_input ("ld2w", OP_REG_OUTPUT, OP_POSTDEC, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -1459,7 +1456,8 @@ OP_6201 ()
   trace_input ("ld2w", OP_REG_OUTPUT, OP_POSTINC, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -1479,7 +1477,8 @@ OP_6200 ()
   trace_input ("ld2w", OP_REG_OUTPUT, OP_MEMREF, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -1497,7 +1496,8 @@ OP_33010000 ()
   trace_input ("ld2w", OP_REG_OUTPUT, OP_MEMREF3, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2741,7 +2741,8 @@ OP_34000000 ()
   trace_input ("st", OP_REG, OP_MEMREF2, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2757,7 +2758,8 @@ OP_6800 ()
   trace_input ("st", OP_REG, OP_MEMREF, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2780,7 +2782,8 @@ OP_6C1F ()
     }
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2797,7 +2800,8 @@ OP_6801 ()
   trace_input ("st", OP_REG, OP_POSTINC, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2820,7 +2824,8 @@ OP_6C01 ()
     }
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2837,7 +2842,8 @@ OP_36010000 ()
   trace_input ("st", OP_REG, OP_MEMREF3, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2853,7 +2859,8 @@ OP_35000000 ()
   trace_input ("st2w", OP_DREG, OP_MEMREF2, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2870,7 +2877,8 @@ OP_6A00 ()
   trace_input ("st2w", OP_DREG, OP_MEMREF, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2893,7 +2901,8 @@ OP_6E1F ()
     }
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2911,7 +2920,8 @@ OP_6A01 ()
   trace_input ("st2w", OP_DREG, OP_POSTINC, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2935,7 +2945,8 @@ OP_6E01 ()
     }
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }
@@ -2953,7 +2964,8 @@ OP_37010000 ()
   trace_input ("st2w", OP_DREG, OP_MEMREF3, OP_VOID);
   if ((addr & 1))
     {
-      address_exception ();
+      State.exception = SIG_D10V_BUS;
+      State.pc_changed = 1; /* Don't increment the PC. */
       trace_output_void ();
       return;
     }