diff agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9FMOVccDecoder.java @ 0:a61af66fc99e jdk7-b24

Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children c18cbe5936b8
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9FMOVccDecoder.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2002 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.asm.sparc;
+
+import sun.jvm.hotspot.asm.*;
+import sun.jvm.hotspot.utilities.Assert;
+
+class V9FMOVccDecoder extends V9CMoveDecoder implements /* imports */ RTLDataTypes {
+    private final int opf;
+    private final int dataType;
+
+    V9FMOVccDecoder(int opf, int dataType) {
+        this.opf = opf;
+        this.dataType = dataType;
+    }
+
+    private static String getFMoveCCName(int conditionCode, int conditionFlag, int dataType) {
+        StringBuffer buf = new StringBuffer("fmov");
+        buf.append(getFloatTypeCode(dataType));
+        buf.append(getConditionName(conditionCode, conditionFlag));
+        return buf.toString();
+    }
+
+    private static int getFMoveConditionFlag(int instruction) {
+        return (instruction & OPF_CC_MASK) >>> OPF_CC_START_BIT;
+    }
+
+    Instruction decode(int instruction, SPARCInstructionFactory factory) {
+        SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory;
+        Instruction instr = null;
+        int conditionFlag = getFMoveConditionFlag(instruction);
+        if (conditionFlag == CFLAG_RESERVED1 || conditionFlag == CFLAG_RESERVED2) {
+            instr = v9factory.newIllegalInstruction(instruction);
+        } else {
+            int rdNum = getDestinationRegister(instruction);
+            int rs1Num = getSourceRegister1(instruction);
+            SPARCRegister rd = RegisterDecoder.decode(dataType, rdNum);
+            int conditionCode = getMoveConditionCode(instruction);
+            SPARCRegister rs = RegisterDecoder.decode(dataType, rs1Num);
+            String name = getFMoveCCName(conditionCode, conditionFlag, dataType);
+            instr = v9factory.newV9FMOVccInstruction(name,opf, conditionCode, conditionFlag,
+                               (SPARCFloatRegister)rs, (SPARCFloatRegister)rd);
+        }
+
+        return instr;
+    }
+}