mips: Break out cpu_mips_timer_expire

Reorganize for future patches, no functional change.

Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
diff --git a/hw/mips_timer.c b/hw/mips_timer.c
index e3beee8..8c32087 100644
--- a/hw/mips_timer.c
+++ b/hw/mips_timer.c
@@ -42,16 +42,6 @@
 }
 
 /* MIPS R4K timer */
-uint32_t cpu_mips_get_count (CPUState *env)
-{
-    if (env->CP0_Cause & (1 << CP0Ca_DC))
-        return env->CP0_Count;
-    else
-        return env->CP0_Count +
-            (uint32_t)muldiv64(qemu_get_clock(vm_clock),
-                               TIMER_FREQ, get_ticks_per_sec());
-}
-
 static void cpu_mips_timer_update(CPUState *env)
 {
     uint64_t now, next;
@@ -64,6 +54,27 @@
     qemu_mod_timer(env->timer, next);
 }
 
+/* Expire the timer.  */
+static void cpu_mips_timer_expire(CPUState *env)
+{
+    cpu_mips_timer_update(env);
+    if (env->insn_flags & ISA_MIPS32R2) {
+        env->CP0_Cause |= 1 << CP0Ca_TI;
+    }
+    qemu_irq_raise(env->irq[(env->CP0_IntCtl >> CP0IntCtl_IPTI) & 0x7]);
+}
+
+uint32_t cpu_mips_get_count (CPUState *env)
+{
+    if (env->CP0_Cause & (1 << CP0Ca_DC)) {
+        return env->CP0_Count;
+    } else {
+        return env->CP0_Count +
+            (uint32_t)muldiv64(qemu_get_clock(vm_clock),
+                               TIMER_FREQ, get_ticks_per_sec());
+    }
+}
+
 void cpu_mips_store_count (CPUState *env, uint32_t count)
 {
     if (env->CP0_Cause & (1 << CP0Ca_DC))
@@ -116,11 +127,8 @@
        the comparator value.  Offset the count by one to avoid immediately
        retriggering the callback before any virtual time has passed.  */
     env->CP0_Count++;
-    cpu_mips_timer_update(env);
+    cpu_mips_timer_expire(env);
     env->CP0_Count--;
-    if (env->insn_flags & ISA_MIPS32R2)
-        env->CP0_Cause |= 1 << CP0Ca_TI;
-    qemu_irq_raise(env->irq[(env->CP0_IntCtl >> CP0IntCtl_IPTI) & 0x7]);
 }
 
 void cpu_mips_clock_init (CPUState *env)