Mercurial > hg > graal-jvmci-8
annotate agent/src/share/classes/sun/jvm/hotspot/code/NMethod.java @ 6782:5a98bf7d847b
6879063: SA should use hsdis for disassembly
Summary: We should in SA to use hsdis for it like the JVM does to replace the current java based disassembler.
Reviewed-by: twisti, jrose, sla
Contributed-by: yumin.qi@oracle.com
author | minqi |
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date | Mon, 24 Sep 2012 12:44:00 -0700 |
parents | da91efe96a93 |
children | bd7a7ce2e264 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.code; | |
26 | |
27 import java.io.*; | |
28 import java.util.*; | |
29 import sun.jvm.hotspot.debugger.*; | |
30 import sun.jvm.hotspot.memory.*; | |
31 import sun.jvm.hotspot.oops.*; | |
32 import sun.jvm.hotspot.runtime.*; | |
33 import sun.jvm.hotspot.types.*; | |
34 import sun.jvm.hotspot.utilities.*; | |
35 | |
36 public class NMethod extends CodeBlob { | |
37 private static long pcDescSize; | |
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38 private static AddressField methodField; |
0 | 39 /** != InvocationEntryBci if this nmethod is an on-stack replacement method */ |
40 private static CIntegerField entryBCIField; | |
41 /** To support simple linked-list chaining of nmethods */ | |
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42 private static AddressField osrLinkField; |
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43 private static AddressField scavengeRootLinkField; |
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44 private static JByteField scavengeRootStateField; |
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45 |
0 | 46 /** Offsets for different nmethod parts */ |
47 private static CIntegerField exceptionOffsetField; | |
48 private static CIntegerField deoptOffsetField; | |
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49 private static CIntegerField deoptMhOffsetField; |
0 | 50 private static CIntegerField origPCOffsetField; |
51 private static CIntegerField stubOffsetField; | |
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52 private static CIntegerField oopsOffsetField; |
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53 private static CIntegerField metadataOffsetField; |
0 | 54 private static CIntegerField scopesDataOffsetField; |
55 private static CIntegerField scopesPCsOffsetField; | |
56 private static CIntegerField dependenciesOffsetField; | |
57 private static CIntegerField handlerTableOffsetField; | |
58 private static CIntegerField nulChkTableOffsetField; | |
59 private static CIntegerField nmethodEndOffsetField; | |
60 | |
61 /** Offsets for entry points */ | |
62 /** Entry point with class check */ | |
63 private static AddressField entryPointField; | |
64 /** Entry point without class check */ | |
65 private static AddressField verifiedEntryPointField; | |
66 /** Entry point for on stack replacement */ | |
67 private static AddressField osrEntryPointField; | |
68 | |
69 // FIXME: add access to flags (how?) | |
70 | |
71 /** NMethod Flushing lock (if non-zero, then the nmethod is not removed) */ | |
72 private static JIntField lockCountField; | |
73 | |
74 /** not_entrant method removal. Each mark_sweep pass will update | |
75 this mark to current sweep invocation count if it is seen on the | |
76 stack. An not_entrant method can be removed when there is no | |
77 more activations, i.e., when the _stack_traversal_mark is less than | |
78 current sweep traversal index. */ | |
79 private static CIntegerField stackTraversalMarkField; | |
80 | |
81 static { | |
82 VM.registerVMInitializedObserver(new Observer() { | |
83 public void update(Observable o, Object data) { | |
84 initialize(VM.getVM().getTypeDataBase()); | |
85 } | |
86 }); | |
87 } | |
88 | |
89 private static void initialize(TypeDataBase db) { | |
90 Type type = db.lookupType("nmethod"); | |
91 | |
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92 methodField = type.getAddressField("_method"); |
0 | 93 entryBCIField = type.getCIntegerField("_entry_bci"); |
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94 osrLinkField = type.getAddressField("_osr_link"); |
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95 scavengeRootLinkField = type.getAddressField("_scavenge_root_link"); |
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96 scavengeRootStateField = type.getJByteField("_scavenge_root_state"); |
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97 |
0 | 98 exceptionOffsetField = type.getCIntegerField("_exception_offset"); |
99 deoptOffsetField = type.getCIntegerField("_deoptimize_offset"); | |
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100 deoptMhOffsetField = type.getCIntegerField("_deoptimize_mh_offset"); |
0 | 101 origPCOffsetField = type.getCIntegerField("_orig_pc_offset"); |
102 stubOffsetField = type.getCIntegerField("_stub_offset"); | |
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103 oopsOffsetField = type.getCIntegerField("_oops_offset"); |
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104 metadataOffsetField = type.getCIntegerField("_metadata_offset"); |
0 | 105 scopesDataOffsetField = type.getCIntegerField("_scopes_data_offset"); |
106 scopesPCsOffsetField = type.getCIntegerField("_scopes_pcs_offset"); | |
107 dependenciesOffsetField = type.getCIntegerField("_dependencies_offset"); | |
108 handlerTableOffsetField = type.getCIntegerField("_handler_table_offset"); | |
109 nulChkTableOffsetField = type.getCIntegerField("_nul_chk_table_offset"); | |
110 nmethodEndOffsetField = type.getCIntegerField("_nmethod_end_offset"); | |
111 entryPointField = type.getAddressField("_entry_point"); | |
112 verifiedEntryPointField = type.getAddressField("_verified_entry_point"); | |
113 osrEntryPointField = type.getAddressField("_osr_entry_point"); | |
114 lockCountField = type.getJIntField("_lock_count"); | |
115 stackTraversalMarkField = type.getCIntegerField("_stack_traversal_mark"); | |
116 | |
117 pcDescSize = db.lookupType("PcDesc").getSize(); | |
118 } | |
119 | |
120 public NMethod(Address addr) { | |
121 super(addr); | |
122 } | |
123 | |
124 | |
125 // Accessors | |
126 public Address getAddress() { | |
127 return addr; | |
128 } | |
129 | |
130 public Method getMethod() { | |
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131 return (Method)Metadata.instantiateWrapperFor(methodField.getValue(addr)); |
0 | 132 } |
133 | |
134 // Type info | |
135 public boolean isNMethod() { return true; } | |
136 public boolean isJavaMethod() { return !getMethod().isNative(); } | |
137 public boolean isNativeMethod() { return getMethod().isNative(); } | |
138 public boolean isOSRMethod() { return getEntryBCI() != VM.getVM().getInvocationEntryBCI(); } | |
139 | |
140 /** Boundaries for different parts */ | |
1748 | 141 public Address constantsBegin() { return contentBegin(); } |
0 | 142 public Address constantsEnd() { return getEntryPoint(); } |
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143 public Address instsBegin() { return codeBegin(); } |
1748 | 144 public Address instsEnd() { return headerBegin().addOffsetTo(getStubOffset()); } |
0 | 145 public Address exceptionBegin() { return headerBegin().addOffsetTo(getExceptionOffset()); } |
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146 public Address deoptHandlerBegin() { return headerBegin().addOffsetTo(getDeoptOffset()); } |
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147 public Address deoptMhHandlerBegin() { return headerBegin().addOffsetTo(getDeoptMhOffset()); } |
0 | 148 public Address stubBegin() { return headerBegin().addOffsetTo(getStubOffset()); } |
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149 public Address stubEnd() { return headerBegin().addOffsetTo(getOopsOffset()); } |
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150 public Address oopsBegin() { return headerBegin().addOffsetTo(getOopsOffset()); } |
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151 public Address oopsEnd() { return headerBegin().addOffsetTo(getMetadataOffset()); } |
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152 public Address metadataBegin() { return headerBegin().addOffsetTo(getMetadataOffset()); } |
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153 public Address metadataEnd() { return headerBegin().addOffsetTo(getScopesDataOffset()); } |
0 | 154 public Address scopesDataBegin() { return headerBegin().addOffsetTo(getScopesDataOffset()); } |
155 public Address scopesDataEnd() { return headerBegin().addOffsetTo(getScopesPCsOffset()); } | |
156 public Address scopesPCsBegin() { return headerBegin().addOffsetTo(getScopesPCsOffset()); } | |
157 public Address scopesPCsEnd() { return headerBegin().addOffsetTo(getDependenciesOffset()); } | |
158 public Address dependenciesBegin() { return headerBegin().addOffsetTo(getDependenciesOffset()); } | |
159 public Address dependenciesEnd() { return headerBegin().addOffsetTo(getHandlerTableOffset()); } | |
160 public Address handlerTableBegin() { return headerBegin().addOffsetTo(getHandlerTableOffset()); } | |
161 public Address handlerTableEnd() { return headerBegin().addOffsetTo(getNulChkTableOffset()); } | |
162 public Address nulChkTableBegin() { return headerBegin().addOffsetTo(getNulChkTableOffset()); } | |
163 public Address nulChkTableEnd() { return headerBegin().addOffsetTo(getNMethodEndOffset()); } | |
164 | |
165 public int constantsSize() { return (int) constantsEnd() .minus(constantsBegin()); } | |
1748 | 166 public int instsSize() { return (int) instsEnd() .minus(instsBegin()); } |
0 | 167 public int stubSize() { return (int) stubEnd() .minus(stubBegin()); } |
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168 public int oopsSize() { return (int) oopsEnd() .minus(oopsBegin()); } |
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169 public int metadataSize() { return (int) metadataEnd() .minus(metadataBegin()); } |
0 | 170 public int scopesDataSize() { return (int) scopesDataEnd() .minus(scopesDataBegin()); } |
171 public int scopesPCsSize() { return (int) scopesPCsEnd() .minus(scopesPCsBegin()); } | |
172 public int dependenciesSize() { return (int) dependenciesEnd().minus(dependenciesBegin()); } | |
173 public int handlerTableSize() { return (int) handlerTableEnd().minus(handlerTableBegin()); } | |
174 public int nulChkTableSize() { return (int) nulChkTableEnd() .minus(nulChkTableBegin()); } | |
175 public int origPCOffset() { return (int) origPCOffsetField.getValue(addr); } | |
176 | |
177 public int totalSize() { | |
178 return | |
179 constantsSize() + | |
1748 | 180 instsSize() + |
0 | 181 stubSize() + |
182 scopesDataSize() + | |
183 scopesPCsSize() + | |
184 dependenciesSize() + | |
185 handlerTableSize() + | |
186 nulChkTableSize(); | |
187 } | |
188 | |
189 public boolean constantsContains (Address addr) { return constantsBegin() .lessThanOrEqual(addr) && constantsEnd() .greaterThan(addr); } | |
1748 | 190 public boolean instsContains (Address addr) { return instsBegin() .lessThanOrEqual(addr) && instsEnd() .greaterThan(addr); } |
0 | 191 public boolean stubContains (Address addr) { return stubBegin() .lessThanOrEqual(addr) && stubEnd() .greaterThan(addr); } |
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192 public boolean oopsContains (Address addr) { return oopsBegin() .lessThanOrEqual(addr) && oopsEnd() .greaterThan(addr); } |
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193 public boolean metadataContains (Address addr) { return metadataBegin() .lessThanOrEqual(addr) && metadataEnd() .greaterThan(addr); } |
0 | 194 public boolean scopesDataContains (Address addr) { return scopesDataBegin() .lessThanOrEqual(addr) && scopesDataEnd() .greaterThan(addr); } |
195 public boolean scopesPCsContains (Address addr) { return scopesPCsBegin() .lessThanOrEqual(addr) && scopesPCsEnd() .greaterThan(addr); } | |
196 public boolean handlerTableContains(Address addr) { return handlerTableBegin().lessThanOrEqual(addr) && handlerTableEnd().greaterThan(addr); } | |
197 public boolean nulChkTableContains (Address addr) { return nulChkTableBegin() .lessThanOrEqual(addr) && nulChkTableEnd() .greaterThan(addr); } | |
198 | |
3939 | 199 public int getOopsLength() { return (int) (oopsSize() / VM.getVM().getOopSize()); } |
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200 public int getMetadataLength() { return (int) (metadataSize() / VM.getVM().getOopSize()); } |
3939 | 201 |
0 | 202 /** Entry points */ |
203 public Address getEntryPoint() { return entryPointField.getValue(addr); } | |
204 public Address getVerifiedEntryPoint() { return verifiedEntryPointField.getValue(addr); } | |
205 | |
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206 /** Support for oops in scopes and relocs. Note: index 0 is reserved for null. */ |
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207 public OopHandle getOopAt(int index) { |
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208 if (index == 0) return null; |
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209 if (Assert.ASSERTS_ENABLED) { |
3939 | 210 Assert.that(index > 0 && index <= getOopsLength(), "must be a valid non-zero index"); |
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211 } |
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212 return oopsBegin().getOopHandleAt((index - 1) * VM.getVM().getOopSize()); |
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213 } |
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214 |
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215 /** Support for metadata in scopes and relocs. Note: index 0 is reserved for null. */ |
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216 public Address getMetadataAt(int index) { |
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217 if (index == 0) return null; |
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218 if (Assert.ASSERTS_ENABLED) { |
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219 Assert.that(index > 0 && index <= getMetadataLength(), "must be a valid non-zero index"); |
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220 } |
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221 return metadataBegin().getAddressAt((index - 1) * VM.getVM().getOopSize()); |
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222 } |
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223 |
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224 public Method getMethodAt(int index) { |
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225 return (Method)Metadata.instantiateWrapperFor(getMetadataAt(index)); |
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226 } |
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227 |
0 | 228 // FIXME: add interpreter_entry_point() |
229 // FIXME: add lazy_interpreter_entry_point() for C2 | |
230 | |
231 // ********** | |
232 // * FIXME: * ADD ACCESS TO FLAGS!!!! | |
233 // ********** | |
234 // public boolean isInUse(); | |
235 // public boolean isAlive(); | |
236 // public boolean isNotEntrant(); | |
237 // public boolean isZombie(); | |
238 | |
239 // ******************************** | |
240 // * MAJOR FIXME: MAJOR HACK HERE * | |
241 // ******************************** | |
242 public boolean isZombie() { return false; } | |
243 | |
244 // public boolean isUnloaded(); | |
245 // public boolean isYoung(); | |
246 // public boolean isOld(); | |
247 // public int age(); | |
248 // public boolean isMarkedForDeoptimization(); | |
249 // public boolean isMarkedForUnloading(); | |
250 // public boolean isMarkedForReclamation(); | |
251 // public int level(); | |
252 // public int version(); | |
253 | |
254 // FIXME: add mutators for above | |
255 // FIXME: add exception cache access? | |
256 | |
257 /** On-stack replacement support */ | |
258 // FIXME: add mutators | |
259 public int getOSREntryBCI() { | |
260 if (Assert.ASSERTS_ENABLED) { | |
261 Assert.that(getEntryBCI() != VM.getVM().getInvocationEntryBCI(), "wrong kind of nmethod"); | |
262 } | |
263 return getEntryBCI(); | |
264 } | |
265 | |
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266 public NMethod getOSRLink() { |
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267 return (NMethod) VMObjectFactory.newObject(NMethod.class, osrLinkField.getValue(addr)); |
0 | 268 } |
269 | |
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270 public NMethod getScavengeRootLink() { |
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271 return (NMethod) VMObjectFactory.newObject(NMethod.class, scavengeRootLinkField.getValue(addr)); |
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272 } |
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273 |
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274 public int getScavengeRootState() { |
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275 return (int) scavengeRootStateField.getValue(addr); |
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276 } |
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277 |
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278 // MethodHandle |
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279 public boolean isMethodHandleReturn(Address returnPc) { |
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280 // Hard to read a bit fields from Java and it's only there for performance |
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281 // so just go directly to the PCDesc |
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282 // if (!hasMethodHandleInvokes()) return false; |
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283 PCDesc pd = getPCDescAt(returnPc); |
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284 if (pd == null) |
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285 return false; |
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286 return pd.isMethodHandleInvoke(); |
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287 } |
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288 |
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289 // Deopt |
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290 // Return true is the PC is one would expect if the frame is being deopted. |
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291 public boolean isDeoptPc (Address pc) { return isDeoptEntry(pc) || isDeoptMhEntry(pc); } |
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292 public boolean isDeoptEntry (Address pc) { return pc == deoptHandlerBegin(); } |
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293 public boolean isDeoptMhEntry (Address pc) { return pc == deoptMhHandlerBegin(); } |
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294 |
0 | 295 /** Tells whether frames described by this nmethod can be |
296 deoptimized. Note: native wrappers cannot be deoptimized. */ | |
297 public boolean canBeDeoptimized() { return isJavaMethod(); } | |
298 | |
299 // FIXME: add inline cache support | |
300 // FIXME: add flush() | |
301 | |
302 public boolean isLockedByVM() { return lockCountField.getValue(addr) > 0; } | |
303 | |
304 // FIXME: add mark_as_seen_on_stack | |
305 // FIXME: add can_not_entrant_be_converted | |
306 | |
307 // FIXME: add GC support | |
308 // void follow_roots_or_mark_for_unloading(bool unloading_occurred, bool& marked_for_unloading); | |
309 // void follow_root_or_mark_for_unloading(oop* root, bool unloading_occurred, bool& marked_for_unloading); | |
310 // void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, void f(oop*)); | |
311 // void adjust_pointers(); | |
312 | |
313 /** Finds a PCDesc with real-pc equal to "pc" */ | |
314 public PCDesc getPCDescAt(Address pc) { | |
315 // FIXME: consider adding cache like the one down in the VM | |
316 for (Address p = scopesPCsBegin(); p.lessThan(scopesPCsEnd()); p = p.addOffsetTo(pcDescSize)) { | |
317 PCDesc pcDesc = new PCDesc(p); | |
318 if (pcDesc.getRealPC(this).equals(pc)) { | |
319 return pcDesc; | |
320 } | |
321 } | |
322 return null; | |
323 } | |
324 | |
325 /** ScopeDesc for an instruction */ | |
326 public ScopeDesc getScopeDescAt(Address pc) { | |
327 PCDesc pd = getPCDescAt(pc); | |
328 if (Assert.ASSERTS_ENABLED) { | |
329 Assert.that(pd != null, "scope must be present"); | |
330 } | |
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331 return new ScopeDesc(this, pd.getScopeDecodeOffset(), pd.getObjDecodeOffset(), pd.getReexecute()); |
0 | 332 } |
333 | |
334 /** This is only for use by the debugging system, and is only | |
335 intended for use in the topmost frame, where we are not | |
336 guaranteed to be at a PC for which we have a PCDesc. It finds | |
337 the PCDesc with realPC closest to the current PC. */ | |
338 public PCDesc getPCDescNearDbg(Address pc) { | |
339 PCDesc bestGuessPCDesc = null; | |
340 long bestDistance = 0; | |
341 for (Address p = scopesPCsBegin(); p.lessThan(scopesPCsEnd()); p = p.addOffsetTo(pcDescSize)) { | |
342 PCDesc pcDesc = new PCDesc(p); | |
343 // In case pc is null | |
344 long distance = -pcDesc.getRealPC(this).minus(pc); | |
345 if ((bestGuessPCDesc == null) || | |
346 ((distance >= 0) && (distance < bestDistance))) { | |
347 bestGuessPCDesc = pcDesc; | |
348 bestDistance = distance; | |
349 } | |
350 } | |
351 return bestGuessPCDesc; | |
352 } | |
353 | |
6782 | 354 PCDesc find_pc_desc(long pc, boolean approximate) { |
355 return find_pc_desc_internal(pc, approximate); | |
356 } | |
357 | |
358 // Finds a PcDesc with real-pc equal to "pc" | |
359 PCDesc find_pc_desc_internal(long pc, boolean approximate) { | |
360 long base_address = VM.getAddressValue(codeBegin()); | |
361 int pc_offset = (int) (pc - base_address); | |
362 | |
363 // Fallback algorithm: quasi-linear search for the PcDesc | |
364 // Find the last pc_offset less than the given offset. | |
365 // The successor must be the required match, if there is a match at all. | |
366 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
367 Address lower = scopesPCsBegin(); | |
368 Address upper = scopesPCsEnd(); | |
369 upper = upper.addOffsetTo(-pcDescSize); // exclude final sentinel | |
370 if (lower.greaterThan(upper)) return null; // native method; no PcDescs at all | |
371 | |
372 // Take giant steps at first (4096, then 256, then 16, then 1) | |
373 int LOG2_RADIX = 4; | |
374 int RADIX = (1 << LOG2_RADIX); | |
375 Address mid; | |
376 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
377 while ((mid = lower.addOffsetTo(step * pcDescSize)).lessThan(upper)) { | |
378 PCDesc m = new PCDesc(mid); | |
379 if (m.getPCOffset() < pc_offset) { | |
380 lower = mid; | |
381 } else { | |
382 upper = mid; | |
383 break; | |
384 } | |
385 } | |
386 } | |
387 // Sneak up on the value with a linear search of length ~16. | |
388 while (true) { | |
389 mid = lower.addOffsetTo(pcDescSize); | |
390 PCDesc m = new PCDesc(mid); | |
391 if (m.getPCOffset() < pc_offset) { | |
392 lower = mid; | |
393 } else { | |
394 upper = mid; | |
395 break; | |
396 } | |
397 } | |
398 | |
399 PCDesc u = new PCDesc(upper); | |
400 if (match_desc(u, pc_offset, approximate)) { | |
401 return u; | |
402 } else { | |
403 return null; | |
404 } | |
405 } | |
406 | |
407 // ScopeDesc retrieval operation | |
408 PCDesc pc_desc_at(long pc) { return find_pc_desc(pc, false); } | |
409 // pc_desc_near returns the first PCDesc at or after the givne pc. | |
410 PCDesc pc_desc_near(long pc) { return find_pc_desc(pc, true); } | |
411 | |
412 // Return a the last scope in (begin..end] | |
413 public ScopeDesc scope_desc_in(long begin, long end) { | |
414 PCDesc p = pc_desc_near(begin+1); | |
415 if (p != null && VM.getAddressValue(p.getRealPC(this)) <= end) { | |
416 return new ScopeDesc(this, p.getScopeDecodeOffset(), p.getObjDecodeOffset(), p.getReexecute()); | |
417 } | |
418 return null; | |
419 } | |
420 | |
421 static boolean match_desc(PCDesc pc, int pc_offset, boolean approximate) { | |
422 if (!approximate) { | |
423 return pc.getPCOffset() == pc_offset; | |
424 } else { | |
425 PCDesc prev = new PCDesc(pc.getAddress().addOffsetTo(-pcDescSize)); | |
426 return prev.getPCOffset() < pc_offset && pc_offset <= pc.getPCOffset(); | |
427 } | |
428 } | |
429 | |
0 | 430 /** This is only for use by the debugging system, and is only |
431 intended for use in the topmost frame, where we are not | |
432 guaranteed to be at a PC for which we have a PCDesc. It finds | |
433 the ScopeDesc closest to the current PC. NOTE that this may | |
434 return NULL for compiled methods which don't have any | |
435 ScopeDescs! */ | |
436 public ScopeDesc getScopeDescNearDbg(Address pc) { | |
437 PCDesc pd = getPCDescNearDbg(pc); | |
438 if (pd == null) return null; | |
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439 return new ScopeDesc(this, pd.getScopeDecodeOffset(), pd.getObjDecodeOffset(), pd.getReexecute()); |
0 | 440 } |
441 | |
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442 public Map/*<Address, PCDesc>*/ getSafepoints() { |
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443 Map safepoints = new HashMap(); // Map<Address, PCDesc> |
0 | 444 sun.jvm.hotspot.debugger.Address p = null; |
445 for (p = scopesPCsBegin(); p.lessThan(scopesPCsEnd()); | |
446 p = p.addOffsetTo(pcDescSize)) { | |
447 PCDesc pcDesc = new PCDesc(p); | |
448 sun.jvm.hotspot.debugger.Address pc = pcDesc.getRealPC(this); | |
449 safepoints.put(pc, pcDesc); | |
450 } | |
451 return safepoints; | |
452 } | |
453 | |
454 // FIXME: add getPCOffsetForBCI() | |
455 // FIXME: add embeddedOopAt() | |
456 // FIXME: add isDependentOn() | |
457 // FIXME: add isPatchableAt() | |
458 | |
459 /** Support for code generation. Only here for proof-of-concept. */ | |
460 public static int getEntryPointOffset() { return (int) entryPointField.getOffset(); } | |
461 public static int getVerifiedEntryPointOffset() { return (int) verifiedEntryPointField.getOffset(); } | |
462 public static int getOSREntryPointOffset() { return (int) osrEntryPointField.getOffset(); } | |
463 public static int getEntryBCIOffset() { return (int) entryBCIField.getOffset(); } | |
464 /** NOTE: renamed from "method_offset_in_bytes" */ | |
465 public static int getMethodOffset() { return (int) methodField.getOffset(); } | |
466 | |
467 public void print() { | |
468 printOn(System.out); | |
469 } | |
470 | |
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471 protected void printComponentsOn(PrintStream tty) { |
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472 // FIXME: add relocation information |
1748 | 473 tty.println(" content: [" + contentBegin() + ", " + contentEnd() + "), " + |
474 " code: [" + codeBegin() + ", " + codeEnd() + "), " + | |
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475 " data: [" + dataBegin() + ", " + dataEnd() + "), " + |
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476 " oops: [" + oopsBegin() + ", " + oopsEnd() + "), " + |
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477 " frame size: " + getFrameSize()); |
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478 } |
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479 |
0 | 480 public String toString() { |
481 Method method = getMethod(); | |
482 return "NMethod for " + | |
483 method.getMethodHolder().getName().asString() + "." + | |
484 method.getName().asString() + method.getSignature().asString() + "==>n" + | |
485 super.toString(); | |
486 } | |
487 | |
488 public String flagsToString() { | |
489 // FIXME need access to flags... | |
490 return ""; | |
491 } | |
492 | |
493 public String getName() { | |
494 Method method = getMethod(); | |
495 return "NMethod for " + | |
496 method.getMethodHolder().getName().asString() + "." + | |
497 method.getName().asString() + | |
498 method.getSignature().asString(); | |
499 } | |
500 | |
501 //-------------------------------------------------------------------------------- | |
502 // Internals only below this point | |
503 // | |
504 | |
505 private int getEntryBCI() { return (int) entryBCIField .getValue(addr); } | |
506 private int getExceptionOffset() { return (int) exceptionOffsetField .getValue(addr); } | |
507 private int getDeoptOffset() { return (int) deoptOffsetField .getValue(addr); } | |
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508 private int getDeoptMhOffset() { return (int) deoptMhOffsetField .getValue(addr); } |
0 | 509 private int getStubOffset() { return (int) stubOffsetField .getValue(addr); } |
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510 private int getOopsOffset() { return (int) oopsOffsetField .getValue(addr); } |
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511 private int getMetadataOffset() { return (int) metadataOffsetField .getValue(addr); } |
0 | 512 private int getScopesDataOffset() { return (int) scopesDataOffsetField .getValue(addr); } |
513 private int getScopesPCsOffset() { return (int) scopesPCsOffsetField .getValue(addr); } | |
514 private int getDependenciesOffset() { return (int) dependenciesOffsetField.getValue(addr); } | |
515 private int getHandlerTableOffset() { return (int) handlerTableOffsetField.getValue(addr); } | |
516 private int getNulChkTableOffset() { return (int) nulChkTableOffsetField .getValue(addr); } | |
517 private int getNMethodEndOffset() { return (int) nmethodEndOffsetField .getValue(addr); } | |
518 } |