From 77f8dd5add8f02253dcea1454c9d2c76d7c788a7 Mon Sep 17 00:00:00 2001
From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Wed, 5 Mar 2003 22:24:48 +0000
Subject: float fixes - added bsr/bsf support

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@23 c046a42c-6fe2-441c-8c8c-71466251a162
---
 ops_template.h | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

(limited to 'ops_template.h')

diff --git a/ops_template.h b/ops_template.h
index ce92db097b..745c27d7e5 100644
--- a/ops_template.h
+++ b/ops_template.h
@@ -633,6 +633,42 @@ void OPPROTO glue(glue(op_btc, SUFFIX), _T0_T1_cc)(void)
     T0 ^= (1 << count);
 }
 
+void OPPROTO glue(glue(op_bsf, SUFFIX), _T0_cc)(void)
+{
+    int res, count;
+    res = T0 & DATA_MASK;
+    if (res != 0) {
+        count = 0;
+        while ((res & 1) == 0) {
+            count++;
+            res >>= 1;
+        }
+        T0 = count;
+        CC_DST = 1; /* ZF = 1 */
+    } else {
+        CC_DST = 0; /* ZF = 1 */
+    }
+    FORCE_RET();
+}
+
+void OPPROTO glue(glue(op_bsr, SUFFIX), _T0_cc)(void)
+{
+    int res, count;
+    res = T0 & DATA_MASK;
+    if (res != 0) {
+        count = DATA_BITS - 1;
+        while ((res & SIGN_MASK) == 0) {
+            count--;
+            res <<= 1;
+        }
+        T0 = count;
+        CC_DST = 1; /* ZF = 1 */
+    } else {
+        CC_DST = 0; /* ZF = 1 */
+    }
+    FORCE_RET();
+}
+
 #endif
 
 /* string operations */
-- 
cgit v1.2.3