[v4,03/15] target/ppc: introduce helper_update_ca_legacy

Commit Message

Nikunj A. Dadhania Feb. 23, 2017, 7:56 p.m. UTC

Update the environment carry variable in the helper.

Signed-off-by: Nikunj A Dadhania <[e-mail]>
---
 target/ppc/int_helper.c | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

Patch

diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c
index b376860..d7af671 100644
--- a/target/ppc/int_helper.c
+++ b/target/ppc/int_helper.c
@@ -37,6 +37,11 @@  static inline void helper_update_ov_legacy(CPUPPCState *env, int ov)
     }
 }
 
+static inline void helper_update_ca(CPUPPCState *env, int ca)
+{
+    env->ca = ca;
+}
+
 target_ulong helper_divweu(CPUPPCState *env, target_ulong ra, target_ulong rb,
                            uint32_t oe)
 {
@@ -213,24 +218,26 @@  target_ulong helper_sraw(CPUPPCState *env, target_ulong value,
                          target_ulong shift)
 {
     int32_t ret;
+    int ca;
 
     if (likely(!(shift & 0x20))) {
         if (likely((uint32_t)shift != 0)) {
             shift &= 0x1f;
             ret = (int32_t)value >> shift;
             if (likely(ret >= 0 || (value & ((1 << shift) - 1)) == 0)) {
-                env->ca = 0;
+                ca = 0;
             } else {
-                env->ca = 1;
+                ca = 1;
             }
         } else {
             ret = (int32_t)value;
-            env->ca = 0;
+            ca = 0;
         }
     } else {
         ret = (int32_t)value >> 31;
-        env->ca = (ret != 0);
+        ca = (ret != 0);
     }
+    helper_update_ca(env, ca);
     return (target_long)ret;
 }
 
@@ -239,24 +246,26 @@  target_ulong helper_srad(CPUPPCState *env, target_ulong value,
                          target_ulong shift)
 {
     int64_t ret;
+    int ca;
 
     if (likely(!(shift & 0x40))) {
         if (likely((uint64_t)shift != 0)) {
             shift &= 0x3f;
             ret = (int64_t)value >> shift;
             if (likely(ret >= 0 || (value & ((1ULL << shift) - 1)) == 0)) {
-                env->ca = 0;
+                ca = 0;
             } else {
-                env->ca = 1;
+                ca = 1;
             }
         } else {
             ret = (int64_t)value;
-            env->ca = 0;
+            ca = 0;
         }
     } else {
         ret = (int64_t)value >> 63;
-        env->ca = (ret != 0);
+        ca = (ret != 0);
     }
+    helper_update_ca(env, ca);
     return ret;
 }
 #endif