Mercurial > hg > graal-jvmci-8
comparison graal/Compiler/src/com/sun/c1x/ir/NativeCall.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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2506:4a3bf8a5bf41 | 2507:9ec15d6914ca |
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1 /* | |
2 * Copyright (c) 2010, 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.c1x.ir; | |
24 | |
25 import com.sun.c1x.debug.*; | |
26 import com.sun.c1x.value.*; | |
27 import com.sun.cri.ri.*; | |
28 | |
29 /** | |
30 * Represents a call to a native function from within a native method stub. | |
31 * | |
32 * @author Doug Simon | |
33 */ | |
34 public final class NativeCall extends StateSplit { | |
35 | |
36 /** | |
37 * The instruction that produces the native function address for this native call. | |
38 */ | |
39 private Value address; | |
40 | |
41 /** | |
42 * The native method for this native call. | |
43 */ | |
44 public final RiMethod nativeMethod; | |
45 | |
46 /** | |
47 * The signature of the call which is derived from {@link #nativeMethod} but is not | |
48 * the same as its {@linkplain RiMethod#signature() signature}. | |
49 */ | |
50 public final RiSignature signature; | |
51 | |
52 /** | |
53 * The list of instructions that produce the arguments for this native call. | |
54 */ | |
55 public final Value[] arguments; | |
56 | |
57 /** | |
58 * Constructs a new NativeCall instruction. | |
59 * | |
60 * @param nativeMethod TODO | |
61 * @param signature TODO | |
62 * @param address TODO | |
63 * @param args the list of instructions producing arguments to the invocation | |
64 * @param stateBefore the state before executing the invocation | |
65 */ | |
66 public NativeCall(RiMethod nativeMethod, RiSignature signature, Value address, Value[] args, FrameState stateBefore) { | |
67 super(signature.returnKind().stackKind(), stateBefore); | |
68 this.address = address; | |
69 this.nativeMethod = nativeMethod; | |
70 this.arguments = args; | |
71 this.signature = signature; | |
72 assert nativeMethod.jniSymbol() != null; | |
73 } | |
74 | |
75 /** | |
76 * The native function may call back into the VM which may call method that can trap. | |
77 */ | |
78 @Override | |
79 public boolean canTrap() { | |
80 return true; | |
81 } | |
82 | |
83 /** | |
84 * Gets the instruction that produces the native function address for this native call. | |
85 * @return the instruction | |
86 */ | |
87 public Value address() { | |
88 return address; | |
89 } | |
90 | |
91 @Override | |
92 public void inputValuesDo(ValueClosure closure) { | |
93 for (int i = 0; i < arguments.length; i++) { | |
94 Value arg = arguments[i]; | |
95 if (arg != null) { | |
96 arguments[i] = closure.apply(arg); | |
97 assert arguments[i] != null; | |
98 } | |
99 } | |
100 address = closure.apply(address); | |
101 } | |
102 | |
103 @Override | |
104 public void accept(ValueVisitor v) { | |
105 v.visitNativeCall(this); | |
106 } | |
107 | |
108 @Override | |
109 public void print(LogStream out) { | |
110 out.print(nativeMethod.jniSymbol()).print('('); | |
111 for (int i = 0; i < arguments.length; i++) { | |
112 if (i > 0) { | |
113 out.print(", "); | |
114 } | |
115 out.print(arguments[i]); | |
116 } | |
117 out.print(')'); | |
118 } | |
119 } |