Mercurial > hg > truffle
diff graal/com.oracle.max.cri/src/com/sun/cri/ci/CiCallingConvention.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
parents | |
children | 9e0c1b4cfef5 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.max.cri/src/com/sun/cri/ci/CiCallingConvention.java Sat Dec 17 19:59:18 2011 +0100 @@ -0,0 +1,105 @@ +/* + * Copyright (c) 2009, 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package com.sun.cri.ci; + +import com.sun.cri.ri.*; + + +/** + * A calling convention describes the locations in which the arguments for a call are placed. + */ +public class CiCallingConvention { + + /** + * Constants denoting the type of a call for which a calling convention is + * {@linkplain RiRegisterConfig#getCallingConvention(Type, CiKind[], CiTarget, boolean) requested}. + */ + public enum Type { + /** + * A request for the outgoing argument locations at a call site to Java code. + */ + JavaCall(true), + + /** + * A request for the incoming argument locations. + */ + JavaCallee(false), + + /** + * A request for the outgoing argument locations at a call site to the runtime (which may be Java or native code). + */ + RuntimeCall(true), + + /** + * A request for the outgoing argument locations at a call site to + * external native code that complies with the platform ABI. + */ + NativeCall(true); + + /** + * Determines if this is a request for the outgoing argument locations at a call site. + */ + public final boolean out; + + public static final Type[] VALUES = values(); + + private Type(boolean out) { + this.out = out; + } + } + + /** + * The amount of stack space (in bytes) required for the stack-based arguments of the call. + */ + public final int stackSize; + + /** + * The locations in which the arguments are placed. This array ordered by argument index. + */ + public final CiValue[] locations; + + public CiCallingConvention(CiValue[] locations, int stackSize) { + this.locations = locations; + this.stackSize = stackSize; + assert verify(); + } + + @Override + public String toString() { + StringBuilder result = new StringBuilder(); + result.append("CallingConvention["); + for (CiValue op : locations) { + result.append(op.toString()).append(" "); + } + result.append("]"); + return result.toString(); + } + + private boolean verify() { + for (int i = 0; i < locations.length; i++) { + CiValue location = locations[i]; + assert location.isStackSlot() || location.isRegister(); + } + return true; + } +}