Add correct stack bias if a 64 bit stack is used

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5113 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 9 insertions, 0 deletions

diff --git a/linux-user/main.c b/linux-user/main.c
index 50e2da4db..32f5455e6 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -758,6 +758,7 @@ void cpu_loop(CPUARMState *env)
 #endif
 
 #ifdef TARGET_SPARC
+#define SPARC64_STACK_BIAS 2047
 
 //#define DEBUG_WIN
 
@@ -780,6 +781,10 @@ static inline void save_window_offset(CPUSPARCState *env, int cwp1)
     abi_ulong sp_ptr;
 
     sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
+#ifdef TARGET_SPARC64
+    if (sp_ptr & 3)
+        sp_ptr += SPARC64_STACK_BIAS;
+#endif
 #if defined(DEBUG_WIN)
     printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
            sp_ptr, cwp1);
@@ -822,6 +827,10 @@ static void restore_window(CPUSPARCState *env)
     /* restore the invalid window */
     cwp1 = cpu_cwp_inc(env, env->cwp + 1);
     sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
+#ifdef TARGET_SPARC64
+    if (sp_ptr & 3)
+        sp_ptr += SPARC64_STACK_BIAS;
+#endif
 #if defined(DEBUG_WIN)
     printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
            sp_ptr, cwp1);