sim: microblaze: switch to common sim_resume/sim_stop_reason

This allows us to use the common code for all exception handling.

diff --git a/sim/microblaze/ChangeLog b/sim/microblaze/ChangeLog
index cd4be04..4bd0da4 100644 (file)
--- a/sim/microblaze/ChangeLog
+++ b/sim/microblaze/ChangeLog
@@ -1,3 +1,13 @@
+2015-06-11  Mike Frysinger  <vapier@gentoo.org>
+
+       * Makefile.in (SIM_OBJS): Add sim-resume.o.
+       * interp.c (sim_resume): rename to ...
+       (sim_engine_run): ... this.  Change CPU.exception setting to
+       sim_engine_halt calls.  Change do/while to while(1).  Call
+       sim_events_process when sim_events_tick is true.
+       (sim_stop_reason): Delete.
+       * sim-main.h (microblaze_regset): Delete exception member.
+
 2015-04-18  Mike Frysinger  <vapier@gentoo.org>
 
        * sim-main.h (SIM_CPU): Delete.

diff --git a/sim/microblaze/Makefile.in b/sim/microblaze/Makefile.in
index 6c63129..ca4f70a 100644 (file)
--- a/sim/microblaze/Makefile.in
+++ b/sim/microblaze/Makefile.in
@@ -22,6 +22,7 @@ SIM_OBJS = \
        $(SIM_NEW_COMMON_OBJS) \
        sim-hload.o \
        sim-reason.o \
+       sim-resume.o \
        sim-stop.o
 
 ## COMMON_POST_CONFIG_FRAG

diff --git a/sim/microblaze/interp.c b/sim/microblaze/interp.c
index e05c107..93e622d 100644 (file)
--- a/sim/microblaze/interp.c
+++ b/sim/microblaze/interp.c
@@ -110,7 +110,10 @@ set_initial_gprs (SIM_CPU *cpu)
 static int tracing = 0;
 
 void
-sim_resume (SIM_DESC sd, int step, int siggnal)
+sim_engine_run (SIM_DESC sd,
+               int next_cpu_nr, /* ignore  */
+               int nr_cpus, /* ignore  */
+               int siggnal) /* ignore  */
 {
   SIM_CPU *cpu = STATE_CPU (sd, 0);
   int needfetch;
@@ -132,13 +135,11 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
   short num_delay_slot; /* UNUSED except as reqd parameter */
   enum microblaze_instr_type insn_type;
 
-  CPU.exception = step ? SIGTRAP : 0;
-
   memops = 0;
   bonus_cycles = 0;
   insts = 0;
 
-  do
+  while (1)
     {
       /* Fetch the initial instructions that we'll decode. */
       inst = MEM_RD_WORD (PC & 0xFFFFFFFC);
@@ -161,12 +162,12 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
       delay_slot_enable = 0;
       branch_taken = 0;
       if (op == microblaze_brk)
-       CPU.exception = SIGTRAP;
+       sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_stopped, SIM_SIGTRAP);
       else if (inst == MICROBLAZE_HALT_INST)
        {
-         CPU.exception = SIGQUIT;
          insts += 1;
          bonus_cycles++;
+         sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_exited, RETREG);
        }
       else
        {
@@ -180,7 +181,8 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
 #undef INSTRUCTION
 
            default:
-             CPU.exception = SIGILL;
+             sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_signalled,
+                              SIM_SIGILL);
              fprintf (stderr, "ERROR: Unknown opcode\n");
            }
          /* Make R0 consistent */
@@ -238,7 +240,8 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
                      if (STATE_VERBOSE_P (sd))
                        fprintf (stderr, "Cannot have branch or return instructions "
                                 "in delay slot (at address 0x%x)\n", PC);
-                     CPU.exception = SIGILL;
+                     sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_signalled,
+                                      SIM_SIGILL);
                    }
                  else
                    {
@@ -252,7 +255,8 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
 #undef INSTRUCTION
 
                        default:
-                         CPU.exception = SIGILL;
+                         sim_engine_halt (sd, NULL, NULL, NULL_CIA,
+                                          sim_signalled, SIM_SIGILL);
                          fprintf (stderr, "ERROR: Unknown opcode at 0x%x\n", PC);
                        }
                      /* Update cycle counts */
@@ -287,8 +291,10 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
 
       if (tracing)
        fprintf (stderr, "\n");
+
+      if (sim_events_tick (sd))
+       sim_events_process (sd);
     }
-  while (!CPU.exception);
 
   /* Hide away the things we've cached while executing.  */
   /*  CPU.pc = pc; */
@@ -349,23 +355,6 @@ sim_fetch_register (SIM_DESC sd, int rn, unsigned char *memory, int length)
 }
 
 void
-sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc)
-{
-  SIM_CPU *cpu = STATE_CPU (sd, 0);
-
-  if (CPU.exception == SIGQUIT)
-    {
-      *reason = sim_exited;
-      *sigrc = RETREG;
-    }
-  else
-    {
-      *reason = sim_stopped;
-      *sigrc = CPU.exception;
-    }
-}
-
-void
 sim_info (SIM_DESC sd, int verbose)
 {
   SIM_CPU *cpu = STATE_CPU (sd, 0);

diff --git a/sim/microblaze/sim-main.h b/sim/microblaze/sim-main.h
index ab4e6af..6781374 100644 (file)
--- a/sim/microblaze/sim-main.h
+++ b/sim/microblaze/sim-main.h
@@ -39,7 +39,6 @@
   word           spregs[2];            /* pc + msr */
   int            cycles;
   int            insts;
-  int            exception;
   ubyte           imm_enable;
   half            imm_high;
 };