tcg: cpu_exec_{enter,exit} helpers

Move invocation of CPUClass.cpu_exec_*() to separate helpers,
to make it easier to refactor that code later.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201212155530.23098-10-cfontana@suse.de>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

accel/tcg/cpu-exec.c

@@ -236,9 +236,22 @@ static void cpu_exec_nocache(CPUState *cpu, int max_cycles,
 }
 #endif
 
-void cpu_exec_step_atomic(CPUState *cpu)
+static void cpu_exec_enter(CPUState *cpu)
+{
+    CPUClass *cc = CPU_GET_CLASS(cpu);
+
+    cc->cpu_exec_enter(cpu);
+}
+
+static void cpu_exec_exit(CPUState *cpu)
 {
     CPUClass *cc = CPU_GET_CLASS(cpu);
+
+    cc->cpu_exec_exit(cpu);
+}
+
+void cpu_exec_step_atomic(CPUState *cpu)
+{
     TranslationBlock *tb;
     target_ulong cs_base, pc;
     uint32_t flags;
@@ -257,11 +270,11 @@ void cpu_exec_step_atomic(CPUState *cpu)
 
         /* Since we got here, we know that parallel_cpus must be true.  */
         parallel_cpus = false;
-        cc->cpu_exec_enter(cpu);
+        cpu_exec_enter(cpu);
         /* execute the generated code */
         trace_exec_tb(tb, pc);
         cpu_tb_exec(cpu, tb);
-        cc->cpu_exec_exit(cpu);
+        cpu_exec_exit(cpu);
     } else {
         /*
          * The mmap_lock is dropped by tb_gen_code if it runs out of
@@ -713,7 +726,7 @@ int cpu_exec(CPUState *cpu)
 
     rcu_read_lock();
 
-    cc->cpu_exec_enter(cpu);
+    cpu_exec_enter(cpu);
 
     /* Calculate difference between guest clock and host clock.
      * This delay includes the delay of the last cycle, so
@@ -775,7 +788,7 @@ int cpu_exec(CPUState *cpu)
         }
     }
 
-    cc->cpu_exec_exit(cpu);
+    cpu_exec_exit(cpu);
     rcu_read_unlock();
 
     return ret;