Implement the PowerPC alternate time-base, following the 2.04 specification.

Share most code with the time-base management routines.
Remove time-base write routines from user-mode emulation environments.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3277 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 4 insertions, 14 deletions

diff --git a/darwin-user/main.c b/darwin-user/main.c
index affd874..45495ed 100644
--- a/darwin-user/main.c
+++ b/darwin-user/main.c
@@ -124,24 +124,14 @@ uint32_t cpu_ppc_load_tbu (CPUState *env)
     return cpu_ppc_get_tb(env) >> 32;
 }
 
-static void cpu_ppc_store_tb (CPUState *env, uint64_t value)
+uint32_t cpu_ppc_load_atbl (CPUState *env)
 {
-    /* TO FIX */
-}
-
-void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
-{
-    cpu_ppc_store_tb(env, ((uint64_t)value << 32) | cpu_ppc_load_tbl(env));
-}
-
-void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
-{
-    cpu_ppc_store_tb(env, ((uint64_t)cpu_ppc_load_tbl(env) << 32) | value);
+    return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
 }
 
-void cpu_ppc601_store_rtcu (CPUState *env, uint32_t value)
+uint32_t cpu_ppc_load_atbu (CPUState *env)
 {
-    cpu_ppc_store_tbu( env, value );
+    return cpu_ppc_get_tb(env) >> 32;
 }
 
 uint32_t cpu_ppc601_load_rtcu (CPUState *env)