Fix disabling of the Cause register for R2.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2612 c046a42c-6fe2-441c-8c8c-71466251a162

diff --git a/hw/mips_timer.c b/hw/mips_timer.c
index 055ee5b..9128cbf 100644 (file)
--- a/hw/mips_timer.c
+++ b/hw/mips_timer.c
@@ -22,14 +22,11 @@ uint32_t cpu_mips_get_count (CPUState *env)
                            100 * 1000 * 1000, ticks_per_sec);
 }
 
-static void cpu_mips_update_count (CPUState *env, uint32_t count,
-                                   uint32_t compare)
+void cpu_mips_store_count (CPUState *env, uint32_t count)
 {
     uint64_t now, next;
     uint32_t tmp;
-
-    if (env->CP0_Cause & (1 << CP0Ca_DC))
-        return;
+    uint32_t compare = env->CP0_Compare;
 
     tmp = count;
     if (count == compare)
@@ -52,14 +49,18 @@ static void cpu_mips_update_count (CPUState *env, uint32_t count,
     qemu_mod_timer(env->timer, next);
 }
 
-void cpu_mips_store_count (CPUState *env, uint32_t value)
+static void cpu_mips_update_count (CPUState *env, uint32_t count)
 {
-    cpu_mips_update_count(env, value, env->CP0_Compare);
+    if (env->CP0_Cause & (1 << CP0Ca_DC))
+        return;
+
+    cpu_mips_store_count(env, count);
 }
 
 void cpu_mips_store_compare (CPUState *env, uint32_t value)
 {
-    cpu_mips_update_count(env, cpu_mips_get_count(env), value);
+    env->CP0_Compare = value;
+    cpu_mips_update_count(env, cpu_mips_get_count(env));
     if ((env->CP0_Config0 & (0x7 << CP0C0_AR)) == (1 << CP0C0_AR))
         env->CP0_Cause &= ~(1 << CP0Ca_TI);
     cpu_mips_irq_request(env, 7, 0);
@@ -75,7 +76,7 @@ static void mips_timer_cb (void *opaque)
         fprintf(logfile, "%s\n", __func__);
     }
 #endif
-    cpu_mips_update_count(env, cpu_mips_get_count(env), env->CP0_Compare);
+    cpu_mips_update_count(env, cpu_mips_get_count(env));
     if ((env->CP0_Config0 & (0x7 << CP0C0_AR)) == (1 << CP0C0_AR))
         env->CP0_Cause |= 1 << CP0Ca_TI;
     cpu_mips_irq_request(env, 7, 1);
@@ -85,6 +86,5 @@ void cpu_mips_clock_init (CPUState *env)
 {
     env->timer = qemu_new_timer(vm_clock, &mips_timer_cb, env);
     env->CP0_Compare = 0;
-    cpu_mips_update_count(env, 1, 0);
+    cpu_mips_update_count(env, 1);
 }
-