target-ppc: convert logical instructions to TCG

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5506 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 34 insertions, 32 deletions

diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c
index e0b6f4efdb..32b347100d 100644
--- a/target-ppc/op_helper.c
+++ b/target-ppc/op_helper.c
@@ -368,96 +368,98 @@ void do_subfzeo_64 (void)
 }
 #endif
 
-void do_cntlzw (void)
+target_ulong helper_cntlzw (target_ulong t)
 {
-    T0 = clz32(T0);
+    return clz32(t);
 }
 
 #if defined(TARGET_PPC64)
-void do_cntlzd (void)
+target_ulong helper_cntlzd (target_ulong t)
 {
-    T0 = clz64(T0);
+    return clz64(t);
 }
 #endif
 
 /* shift right arithmetic helper */
-void do_sraw (void)
+target_ulong helper_sraw (target_ulong value, target_ulong shift)
 {
     int32_t ret;
 
-    if (likely(!(T1 & 0x20UL))) {
-        if (likely((uint32_t)T1 != 0)) {
-            ret = (int32_t)T0 >> (T1 & 0x1fUL);
-            if (likely(ret >= 0 || ((int32_t)T0 & ((1 << T1) - 1)) == 0)) {
+    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->xer &= ~(1 << XER_CA);
             } else {
                 env->xer |= (1 << XER_CA);
             }
         } else {
-            ret = T0;
+            ret = (int32_t)value;
             env->xer &= ~(1 << XER_CA);
         }
     } else {
-        ret = UINT32_MAX * ((uint32_t)T0 >> 31);
-        if (likely(ret >= 0 || ((uint32_t)T0 & ~0x80000000UL) == 0)) {
-            env->xer &= ~(1 << XER_CA);
-        } else {
+        ret = (int32_t)value >> 31;
+        if (ret) {
             env->xer |= (1 << XER_CA);
+        } else {
+            env->xer &= ~(1 << XER_CA);
         }
     }
-    T0 = ret;
+    return (target_long)ret;
 }
 
 #if defined(TARGET_PPC64)
-void do_srad (void)
+target_ulong helper_srad (target_ulong value, target_ulong shift)
 {
     int64_t ret;
 
-    if (likely(!(T1 & 0x40UL))) {
-        if (likely((uint64_t)T1 != 0)) {
-            ret = (int64_t)T0 >> (T1 & 0x3FUL);
-            if (likely(ret >= 0 || ((int64_t)T0 & ((1 << T1) - 1)) == 0)) {
+    if (likely(!(shift & 0x40))) {
+        if (likely((uint64_t)shift != 0)) {
+            shift &= 0x3f;
+            ret = (int64_t)value >> shift;
+            if (likely(ret >= 0 || (value & ((1 << shift) - 1)) == 0)) {
                 env->xer &= ~(1 << XER_CA);
             } else {
                 env->xer |= (1 << XER_CA);
             }
         } else {
-            ret = T0;
+            ret = (int64_t)value;
             env->xer &= ~(1 << XER_CA);
         }
     } else {
-        ret = UINT64_MAX * ((uint64_t)T0 >> 63);
-        if (likely(ret >= 0 || ((uint64_t)T0 & ~0x8000000000000000ULL) == 0)) {
-            env->xer &= ~(1 << XER_CA);
-        } else {
+        ret = (int64_t)value >> 63;
+        if (ret) {
             env->xer |= (1 << XER_CA);
+        } else {
+            env->xer &= ~(1 << XER_CA);
         }
     }
-    T0 = ret;
+    return ret;
 }
 #endif
 
-void do_popcntb (void)
+target_ulong helper_popcntb (target_ulong val)
 {
     uint32_t ret;
     int i;
 
     ret = 0;
     for (i = 0; i < 32; i += 8)
-        ret |= ctpop8((T0 >> i) & 0xFF) << i;
-    T0 = ret;
+        ret |= ctpop8((val >> i) & 0xFF) << i;
+    return ret;
 }
 
 #if defined(TARGET_PPC64)
-void do_popcntb_64 (void)
+target_ulong helper_popcntb_64 (target_ulong val)
 {
     uint64_t ret;
     int i;
 
     ret = 0;
     for (i = 0; i < 64; i += 8)
-        ret |= ctpop8((T0 >> i) & 0xFF) << i;
-    T0 = ret;
+        ret |= ctpop8((val >> i) & 0xFF) << i;
+    return ret;
 }
 #endif