sim: cgen: inline cgen_init logic

This function has done only one thing: post-process command line
settings to see if profiling or tracing has been enabled, and if
so, set the run_fast_p flag in the simulator state.  That flag is
only used in one place: to select the fast or slow cgen engine.
By inlining the run_fast_p logic to the one place it's used, we
can delete a good amount of logic specific to cgen ports: both
the call to cgen_init and the conditional simulator state.  This
in turn allows us to have a single simulator state struct across
all ports so we can share objects more between them, and makes
the sim_open calls look more consistent.

5 files changed, 31 insertions, 60 deletions

diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index 576b02f..dbe9236 100644
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,3 +1,12 @@
+2021-06-09  Mike Frysinger  <vapier@gentoo.org>
+
+	* cgen-defs.h (STATE_RUN_FAST_P, CGEN_STATE, cgen_init): Delete.
+	* cgen-run.c (cgen_get_fast_p): New function.
+	(sim_resume): Move fast_p up and call cgen_get_fast_p.
+	* cgen-utils.c (cgen_init): Delete.
+	* sim-base.h: Delete cgen-sim.h include.
+	(struct sim_state): Delete cgen_state and STATE_CGEN_STATE.
+
 2021-06-08  Mike Frysinger  <vapier@gentoo.org>
 
 	* Make-common.in (IGEN_RUN): New variable.
diff --git a/sim/common/cgen-defs.h b/sim/common/cgen-defs.h
index dab2f9f..520c29c 100644
--- a/sim/common/cgen-defs.h
+++ b/sim/common/cgen-defs.h
@@ -138,22 +138,8 @@ typedef enum {
 #define ENDSWITCH(N)
 #endif
 
-/* Simulator state.  */
-
-/* CGEN_STATE contains additional state information not present in
-   sim_state_base.  */
-
-typedef struct cgen_state {
-  /* Non-zero if no tracing or profiling is selected.  */
-  int run_fast_p;
-#define STATE_RUN_FAST_P(sd) (STATE_CGEN_STATE (sd).run_fast_p)
-} CGEN_STATE;
-
 /* Various utilities.  */
 
-/* Called after sim_post_argv_init to do any cgen initialization.  */
-extern void cgen_init (SIM_DESC);
-
 /* Return the name of an insn.  */
 extern CPU_INSN_NAME_FN cgen_insn_name;
 
diff --git a/sim/common/cgen-run.c b/sim/common/cgen-run.c
index 443b62a..9420942 100644
--- a/sim/common/cgen-run.c
+++ b/sim/common/cgen-run.c
@@ -51,6 +51,24 @@ static void prime_cpu (SIM_CPU *, int);
 static void engine_run_1 (SIM_DESC, int, int);
 static void engine_run_n (SIM_DESC, int, int, int, int);
 
+/* If no profiling or tracing has been enabled, run in fast mode.  */
+static int
+cgen_get_fast_p (SIM_DESC sd)
+{
+  int i, c;
+  int run_fast_p = 1;
+
+  for (c = 0; c < MAX_NR_PROCESSORS; ++c)
+    {
+      SIM_CPU *cpu = STATE_CPU (sd, c);
+
+      if (PROFILE_ANY_P (cpu) || TRACE_ANY_P (cpu))
+	return 0;
+    }
+
+  return 1;
+}
+
 /* sim_resume for cgen */
 
 void
@@ -59,9 +77,13 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
   sim_engine *engine = STATE_ENGINE (sd);
   jmp_buf buf;
   int jmpval;
+  static int fast_p = -1;
 
   ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
 
+  if (fast_p == -1)
+    fast_p = cgen_get_fast_p (sd);
+
   /* we only want to be single stepping the simulator once */
   if (engine->stepper != NULL)
     {
@@ -102,7 +124,6 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
 			  && STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
 		       ? 0
 		       : 8); /*FIXME: magic number*/
-      int fast_p = STATE_RUN_FAST_P (sd);
 
       sim_events_preprocess (sd, last_cpu_nr >= nr_cpus, next_cpu_nr >= nr_cpus);
       if (next_cpu_nr >= nr_cpus)
diff --git a/sim/common/cgen-utils.c b/sim/common/cgen-utils.c
index 890ed02..1310790 100644
--- a/sim/common/cgen-utils.c
+++ b/sim/common/cgen-utils.c
@@ -89,41 +89,6 @@ const CGEN_INSN cgen_virtual_insn_table[] =
   { & virtual_insn_entries[5] }
 };
 
-/* Initialize cgen things.
-   This is called after sim_post_argv_init.  */
-
-void
-cgen_init (SIM_DESC sd)
-{
-  int i, c;
-
-  /* If no profiling or tracing has been enabled, run in fast mode.  */
-  {
-    int run_fast_p = 1;
-
-    for (c = 0; c < MAX_NR_PROCESSORS; ++c)
-      {
-	SIM_CPU *cpu = STATE_CPU (sd, c);
-
-	for (i = 0; i < MAX_PROFILE_VALUES; ++i)
-	  if (CPU_PROFILE_FLAGS (cpu) [i])
-	    {
-	      run_fast_p = 0;
-	      break;
-	    }
-	for (i = 0; i < MAX_TRACE_VALUES; ++i)
-	  if (CPU_TRACE_FLAGS (cpu) [i])
-	    {
-	      run_fast_p = 0;
-	      break;
-	    }
-	if (! run_fast_p)
-	  break;
-      }
-    STATE_RUN_FAST_P (sd) = run_fast_p;
-  }
-}
-
 /* Return the name of insn number I.  */
 
 const char *
diff --git a/sim/common/sim-base.h b/sim/common/sim-base.h
index 7dbf294..054b2ba 100644
--- a/sim/common/sim-base.h
+++ b/sim/common/sim-base.h
@@ -88,10 +88,6 @@ typedef struct _sim_cpu sim_cpu;
 #include "sim-cpu.h"
 #include "sim-assert.h"
 
-#ifdef CGEN_ARCH
-# include "cgen-sim.h"
-#endif
-
 struct sim_state {
   /* All the cpus for this instance.  */
   sim_cpu *cpu[MAX_NR_PROCESSORS];
@@ -217,12 +213,6 @@ struct sim_state {
   void *arch_data;
 #define STATE_ARCH_DATA(sd) ((sd)->arch_data)
 
-#ifdef CGEN_ARCH
-  /* Various cgen runtime state.  */
-  CGEN_STATE cgen_state;
-#endif
-#define STATE_CGEN_STATE(sd) ((sd)->cgen_state)
-
   /* Marker for those wanting to do sanity checks.
      This should remain the last member of this struct to help catch
      miscompilation errors.  */