import gdb-1999-10-04 snapshot

5 files changed, 35 insertions, 17 deletions

diff --git a/sim/i960/ChangeLog b/sim/i960/ChangeLog
index c5e2809..2986bf7 100644
--- a/sim/i960/ChangeLog
+++ b/sim/i960/ChangeLog
@@ -1,3 +1,13 @@
+1999-10-04  Doug Evans  <devans@casey.cygnus.com>
+
+	* sem.c,sem-switch.c: Rebuild.
+	* traps.c (sim_engine_invalid_insn): New arg `vpc'.  Change type of
+	result to SEM_PC.  Return vpc.
+
+Wed Sep 29 14:46:36 1999  Dave Brolley  <brolley@cygnus.com>
+
+	* traps.c (sim_engine_invalid_insn): Return PC.
+
 Thu Sep  2 18:15:53 1999  Andrew Cagney  <cagney@b1.cygnus.com>
 
 	* configure: Regenerated to track ../common/aclocal.m4 changes.
diff --git a/sim/i960/i960-desc.h b/sim/i960/i960-desc.h
index 40ca227..40b6599 100644
--- a/sim/i960/i960-desc.h
+++ b/sim/i960/i960-desc.h
@@ -49,6 +49,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
    e.g. In "b,a foo" the ",a" is an operand.  If mnemonics have operands
    we can't hash on everything up to the space.  */
 #define CGEN_MNEMONIC_OPERANDS
+
 /* Maximum number of operands any insn or macro-insn has.  */
 #define CGEN_MAX_INSN_OPERANDS 16
 
diff --git a/sim/i960/sem-switch.c b/sim/i960/sem-switch.c
index c610249..e1fd336 100644
--- a/sim/i960/sem-switch.c
+++ b/sim/i960/sem-switch.c
@@ -396,13 +396,15 @@ SWITCH (sem, SEM_ARGBUF (vpc) -> semantic.sem_case)
   vpc = SEM_NEXT_VPC (sem_arg, pc, 0);
 
   {
-#if WITH_SCACHE
-    /* Update the recorded pc in the cpu state struct.  */
+    /* Update the recorded pc in the cpu state struct.
+       Only necessary for WITH_SCACHE case, but to avoid the
+       conditional compilation ....  */
     SET_H_PC (pc);
-#endif
-    sim_engine_invalid_insn (current_cpu, pc);
-    sim_io_error (CPU_STATE (current_cpu), "invalid insn not handled\n");
-    /* NOTREACHED */
+    /* Virtual insns have zero size.  Overwrite vpc with address of next insn
+       using the default-insn-bitsize spec.  When executing insns in parallel
+       we may want to queue the fault and continue execution.  */
+    vpc = SEM_NEXT_VPC (sem_arg, pc, 4);
+    vpc = sim_engine_invalid_insn (current_cpu, pc, vpc);
   }
 
 #undef FLD
@@ -7326,7 +7328,7 @@ CPU (h_gr[((UINT) 15)]) = GETMEMSI (current_cpu, pc, ADDSI (CPU (h_gr[((UINT) 31
   IADDR UNUSED pc = abuf->addr;
   vpc = SEM_NEXT_VPC (sem_arg, pc, 4);
 
-do { } while (0); /*nop*/
+((void) 0); /*nop*/
 
 #undef FLD
 }
diff --git a/sim/i960/sem.c b/sim/i960/sem.c
index 5498817..262340e 100644
--- a/sim/i960/sem.c
+++ b/sim/i960/sem.c
@@ -55,13 +55,15 @@ SEM_FN_NAME (i960base,x_invalid) (SIM_CPU *current_cpu, SEM_ARG sem_arg)
   SEM_PC vpc = SEM_NEXT_VPC (sem_arg, pc, 0);
 
   {
-#if WITH_SCACHE
-    /* Update the recorded pc in the cpu state struct.  */
+    /* Update the recorded pc in the cpu state struct.
+       Only necessary for WITH_SCACHE case, but to avoid the
+       conditional compilation ....  */
     SET_H_PC (pc);
-#endif
-    sim_engine_invalid_insn (current_cpu, pc);
-    sim_io_error (CPU_STATE (current_cpu), "invalid insn not handled\n");
-    /* NOTREACHED */
+    /* Virtual insns have zero size.  Overwrite vpc with address of next insn
+       using the default-insn-bitsize spec.  When executing insns in parallel
+       we may want to queue the fault and continue execution.  */
+    vpc = SEM_NEXT_VPC (sem_arg, pc, 4);
+    vpc = sim_engine_invalid_insn (current_cpu, pc, vpc);
   }
 
   return vpc;
@@ -7577,7 +7579,7 @@ SEM_FN_NAME (i960base,flushreg) (SIM_CPU *current_cpu, SEM_ARG sem_arg)
   IADDR UNUSED pc = abuf->addr;
   SEM_PC vpc = SEM_NEXT_VPC (sem_arg, pc, 4);
 
-do { } while (0); /*nop*/
+((void) 0); /*nop*/
 
   return vpc;
 #undef FLD
@@ -7897,7 +7899,9 @@ SEM_FN_NAME (i960base,init_idesc_table) (SIM_CPU *current_cpu)
 
   for (sf = &sem_fns[0]; sf->fn != 0; ++sf)
     {
-      int valid_p = CGEN_INSN_MACH_HAS_P (idesc_table[sf->index].idata, mach_num);
+      const CGEN_INSN *insn = idesc_table[sf->index].idata;
+      int valid_p = (CGEN_INSN_VIRTUAL_P (insn)
+		     || CGEN_INSN_MACH_HAS_P (insn, mach_num));
 #if FAST_P
       if (valid_p)
 	idesc_table[sf->index].sem_fast = sf->fn;
diff --git a/sim/i960/traps.c b/sim/i960/traps.c
index 5b62ca1..570fc95 100644
--- a/sim/i960/traps.c
+++ b/sim/i960/traps.c
@@ -23,8 +23,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 /* The semantic code invokes this for illegal (unrecognized) instructions.  */
 
-void
-sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia)
+SEM_PC
+sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia, SEM_PC vpc)
 {
   SIM_DESC sd = CPU_STATE (current_cpu);
 
@@ -46,6 +46,7 @@ sim_engine_invalid_insn (SIM_CPU *current_cpu, IADDR cia)
   else
 #endif
     sim_engine_halt (sd, current_cpu, NULL, cia, sim_stopped, SIM_SIGILL);
+  return vpc;
 }
 
 /* Process an address exception.  */