Mercurial > hg > graal-jvmci-8
diff agent/src/share/classes/sun/jvm/hotspot/debugger/cdbg/basic/amd64/AMD64CFrame.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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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/debugger/cdbg/basic/amd64/AMD64CFrame.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,69 @@ +/* + * Copyright 2003 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.debugger.cdbg.basic.amd64; + +import sun.jvm.hotspot.debugger.*; +import sun.jvm.hotspot.debugger.cdbg.*; +import sun.jvm.hotspot.debugger.cdbg.basic.*; + +/** Basic AMD64 frame functionality providing sender() functionality. */ + +public class AMD64CFrame extends BasicCFrame { + private Address rbp; + private Address pc; + + private static final int ADDRESS_SIZE = 8; + + /** Constructor for topmost frame */ + public AMD64CFrame(CDebugger dbg, Address rbp, Address pc) { + super(dbg); + this.rbp = rbp; + this.pc = pc; + } + + public CFrame sender() { + if (rbp == null) { + return null; + } + + Address nextRBP = rbp.getAddressAt( 0 * ADDRESS_SIZE); + if (nextRBP == null) { + return null; + } + Address nextPC = rbp.getAddressAt( 1 * ADDRESS_SIZE); + if (nextPC == null) { + return null; + } + return new AMD64CFrame(dbg(), nextRBP, nextPC); + } + + public Address pc() { + return pc; + } + + public Address localVariableBase() { + return rbp; + } +}