diff agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9MOVccDecoder.java @ 0:a61af66fc99e jdk7-b24

Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children c18cbe5936b8
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9MOVccDecoder.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,58 @@
+/*
+ * 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.*;
+
+class V9MOVccDecoder extends V9CMoveDecoder {
+    private static String getMoveCCName(int conditionCode, int conditionFlag) {
+        return "mov" + getConditionName(conditionCode, conditionFlag);
+    }
+
+    private static int getMoveConditionFlag(int instruction) {
+        boolean cc2Bit = (instruction & CMOVE_CC2_MASK) != 0;
+        int conditionFlag = (instruction & CMOVE_CC0_CC1_MASK) >>> CMOVE_CC_START_BIT;
+        if (cc2Bit) conditionFlag |= (0x4); // 100;
+        return conditionFlag;
+    }
+
+    Instruction decode(int instruction, SPARCInstructionFactory factory) {
+        SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory;
+        Instruction instr = null;
+        int conditionFlag = getMoveConditionFlag(instruction);
+        if (conditionFlag == CFLAG_RESERVED1 || conditionFlag == CFLAG_RESERVED2) {
+            instr = v9factory.newIllegalInstruction(instruction);
+        } else {
+            int rdNum = getDestinationRegister(instruction);
+            SPARCRegister rd = SPARCRegisters.getRegister(rdNum);
+            int conditionCode = getMoveConditionCode(instruction);
+            ImmediateOrRegister source = getCMoveSource(instruction, 11);
+            String name = getMoveCCName(conditionCode, conditionFlag);
+            instr = v9factory.newV9MOVccInstruction(name, conditionCode, conditionFlag, source, rd);
+        }
+
+        return instr;
+    }
+}