converted condition code supprot to TCG - converted shift ops to TCG

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4470 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 118 insertions, 0 deletions

diff --git a/target-i386/helper_template.h b/target-i386/helper_template.h
new file mode 100644
index 0000000..62bb15f
--- /dev/null
+++ b/target-i386/helper_template.h
@@ -0,0 +1,118 @@
+/*
+ *  i386 helpers
+ *
+ *  Copyright (c) 2008 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#define DATA_BITS (1 << (3 + SHIFT))
+#define SHIFT_MASK (DATA_BITS - 1)
+#define SIGN_MASK (((target_ulong)1) << (DATA_BITS - 1))
+#if DATA_BITS <= 32
+#define SHIFT1_MASK 0x1f
+#else
+#define SHIFT1_MASK 0x3f
+#endif
+
+#if DATA_BITS == 8
+#define SUFFIX b
+#define DATA_TYPE uint8_t
+#define DATA_STYPE int8_t
+#define DATA_MASK 0xff
+#elif DATA_BITS == 16
+#define SUFFIX w
+#define DATA_TYPE uint16_t
+#define DATA_STYPE int16_t
+#define DATA_MASK 0xffff
+#elif DATA_BITS == 32
+#define SUFFIX l
+#define DATA_TYPE uint32_t
+#define DATA_STYPE int32_t
+#define DATA_MASK 0xffffffff
+#elif DATA_BITS == 64
+#define SUFFIX q
+#define DATA_TYPE uint64_t
+#define DATA_STYPE int64_t
+#define DATA_MASK 0xffffffffffffffffULL
+#else
+#error unhandled operand size
+#endif
+
+target_ulong glue(helper_rcl, SUFFIX)(target_ulong t0, target_ulong t1)
+{
+    int count, eflags;
+    target_ulong src;
+    target_long res;
+
+    count = t1 & SHIFT1_MASK;
+#if DATA_BITS == 16
+    count = rclw_table[count];
+#elif DATA_BITS == 8
+    count = rclb_table[count];
+#endif
+    if (count) {
+        eflags = cc_table[CC_OP].compute_all();
+        t0 &= DATA_MASK;
+        src = t0;
+        res = (t0 << count) | ((target_ulong)(eflags & CC_C) << (count - 1));
+        if (count > 1)
+            res |= t0 >> (DATA_BITS + 1 - count);
+        t0 = res;
+        env->t3 = (eflags & ~(CC_C | CC_O)) |
+            (lshift(src ^ t0, 11 - (DATA_BITS - 1)) & CC_O) |
+            ((src >> (DATA_BITS - count)) & CC_C);
+    } else {
+        env->t3 = -1;
+    }
+    return t0;
+}
+
+target_ulong glue(helper_rcr, SUFFIX)(target_ulong t0, target_ulong t1)
+{
+    int count, eflags;
+    target_ulong src;
+    target_long res;
+
+    count = t1 & SHIFT1_MASK;
+#if DATA_BITS == 16
+    count = rclw_table[count];
+#elif DATA_BITS == 8
+    count = rclb_table[count];
+#endif
+    if (count) {
+        eflags = cc_table[CC_OP].compute_all();
+        t0 &= DATA_MASK;
+        src = t0;
+        res = (t0 >> count) | ((target_ulong)(eflags & CC_C) << (DATA_BITS - count));
+        if (count > 1)
+            res |= t0 << (DATA_BITS + 1 - count);
+        t0 = res;
+        env->t3 = (eflags & ~(CC_C | CC_O)) |
+            (lshift(src ^ t0, 11 - (DATA_BITS - 1)) & CC_O) |
+            ((src >> (count - 1)) & CC_C);
+    } else {
+        env->t3 = -1;
+    }
+    return t0;
+}
+
+#undef DATA_BITS
+#undef SHIFT_MASK
+#undef SHIFT1_MASK
+#undef SIGN_MASK
+#undef DATA_TYPE
+#undef DATA_STYPE
+#undef DATA_MASK
+#undef SUFFIX