Mercurial > hg > truffle

comparison graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiCallingConvention.java @ 4199:aaac4894175c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Renamed cri packages from sun to oracle.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Tue, 03 Jan 2012 16:29:28 +0100
parents graal/com.oracle.max.cri/src/com/sun/cri/ci/CiCallingConvention.java@9e0c1b4cfef5
children 56860d3f9f39
comparison
equal deleted inserted replaced
4198:8c9c0e1eaab1 4199:aaac4894175c
1 /*
2 * Copyright (c) 2009, 2012, 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.oracle.max.cri.ci;
24
25 import static com.oracle.max.cri.ci.CiValueUtil.*;
26
27 import com.oracle.max.cri.ri.*;
28
29
30 /**
31 * A calling convention describes the locations in which the arguments for a call are placed.
32 */
33 public class CiCallingConvention {
34
35 /**
36 * Constants denoting the type of a call for which a calling convention is
37 * {@linkplain RiRegisterConfig#getCallingConvention(Type, CiKind[], CiTarget, boolean) requested}.
38 */
39 public enum Type {
40 /**
41 * A request for the outgoing argument locations at a call site to Java code.
42 */
43 JavaCall(true),
44
45 /**
46 * A request for the incoming argument locations.
47 */
48 JavaCallee(false),
49
50 /**
51 * A request for the outgoing argument locations at a call site to the runtime (which may be Java or native code).
52 */
53 RuntimeCall(true),
54
55 /**
56 * A request for the outgoing argument locations at a call site to
57 * external native code that complies with the platform ABI.
58 */
59 NativeCall(true);
60
61 /**
62 * Determines if this is a request for the outgoing argument locations at a call site.
63 */
64 public final boolean out;
65
66 public static final Type[] VALUES = values();
67
68 private Type(boolean out) {
69 this.out = out;
70 }
71 }
72
73 /**
74 * The amount of stack space (in bytes) required for the stack-based arguments of the call.
75 */
76 public final int stackSize;
77
78 /**
79 * The locations in which the arguments are placed. This array ordered by argument index.
80 */
81 public final CiValue[] locations;
82
83 public CiCallingConvention(CiValue[] locations, int stackSize) {
84 this.locations = locations;
85 this.stackSize = stackSize;
86 assert verify();
87 }
88
89 @Override
90 public String toString() {
91 StringBuilder result = new StringBuilder();
92 result.append("CallingConvention[");
93 for (CiValue op : locations) {
94 result.append(op.toString()).append(" ");
95 }
96 result.append("]");
97 return result.toString();
98 }
99
100 private boolean verify() {
101 for (int i = 0; i < locations.length; i++) {
102 CiValue location = locations[i];
103 assert isStackSlot(location) || isRegister(location);
104 }
105 return true;
106 }
107 }