Mercurial > hg > truffle

comparison graal/com.oracle.max.cri/src/com/sun/cri/ci/CiCallingConvention.java @ 3733:e233f5660da4

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added Java files from Maxine project.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 19:59:18 +0100
parents
children 9e0c1b4cfef5
comparison
equal deleted inserted replaced
3732:3e2e8b8abdaf 3733:e233f5660da4
1 /*
2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.sun.cri.ci;
24
25 import com.sun.cri.ri.*;
26
27
28 /**
29 * A calling convention describes the locations in which the arguments for a call are placed.
30 */
31 public class CiCallingConvention {
32
33 /**
34 * Constants denoting the type of a call for which a calling convention is
35 * {@linkplain RiRegisterConfig#getCallingConvention(Type, CiKind[], CiTarget, boolean) requested}.
36 */
37 public enum Type {
38 /**
39 * A request for the outgoing argument locations at a call site to Java code.
40 */
41 JavaCall(true),
42
43 /**
44 * A request for the incoming argument locations.
45 */
46 JavaCallee(false),
47
48 /**
49 * A request for the outgoing argument locations at a call site to the runtime (which may be Java or native code).
50 */
51 RuntimeCall(true),
52
53 /**
54 * A request for the outgoing argument locations at a call site to
55 * external native code that complies with the platform ABI.
56 */
57 NativeCall(true);
58
59 /**
60 * Determines if this is a request for the outgoing argument locations at a call site.
61 */
62 public final boolean out;
63
64 public static final Type[] VALUES = values();
65
66 private Type(boolean out) {
67 this.out = out;
68 }
69 }
70
71 /**
72 * The amount of stack space (in bytes) required for the stack-based arguments of the call.
73 */
74 public final int stackSize;
75
76 /**
77 * The locations in which the arguments are placed. This array ordered by argument index.
78 */
79 public final CiValue[] locations;
80
81 public CiCallingConvention(CiValue[] locations, int stackSize) {
82 this.locations = locations;
83 this.stackSize = stackSize;
84 assert verify();
85 }
86
87 @Override
88 public String toString() {
89 StringBuilder result = new StringBuilder();
90 result.append("CallingConvention[");
91 for (CiValue op : locations) {
92 result.append(op.toString()).append(" ");
93 }
94 result.append("]");
95 return result.toString();
96 }
97
98 private boolean verify() {
99 for (int i = 0; i < locations.length; i++) {
100 CiValue location = locations[i];
101 assert location.isStackSlot() || location.isRegister();
102 }
103 return true;
104 }
105 }