Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/x86/X86Frame.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 1d7922586cf6 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2001, 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.runtime.x86; | |
| 26 | |
| 27 import java.util.*; | |
| 28 import sun.jvm.hotspot.code.*; | |
| 29 import sun.jvm.hotspot.compiler.*; | |
| 30 import sun.jvm.hotspot.debugger.*; | |
| 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 /** Specialization of and implementation of abstract methods of the | |
| 37 Frame class for the x86 family of CPUs. */ | |
| 38 | |
| 39 public class X86Frame extends Frame { | |
| 40 private static final boolean DEBUG; | |
| 41 static { | |
| 42 DEBUG = System.getProperty("sun.jvm.hotspot.runtime.x86.X86Frame.DEBUG") != null; | |
| 43 } | |
| 44 | |
| 45 // All frames | |
| 46 private static final int LINK_OFFSET = 0; | |
| 47 private static final int RETURN_ADDR_OFFSET = 1; | |
| 48 private static final int SENDER_SP_OFFSET = 2; | |
| 49 | |
| 50 // Interpreter frames | |
| 51 private static final int INTERPRETER_FRAME_MIRROR_OFFSET = 2; // for native calls only | |
| 52 private static final int INTERPRETER_FRAME_SENDER_SP_OFFSET = -1; | |
| 53 private static final int INTERPRETER_FRAME_LAST_SP_OFFSET = INTERPRETER_FRAME_SENDER_SP_OFFSET - 1; | |
| 54 private static final int INTERPRETER_FRAME_METHOD_OFFSET = INTERPRETER_FRAME_LAST_SP_OFFSET - 1; | |
| 55 private static int INTERPRETER_FRAME_MDX_OFFSET; // Non-core builds only | |
| 56 private static int INTERPRETER_FRAME_CACHE_OFFSET; | |
| 57 private static int INTERPRETER_FRAME_LOCALS_OFFSET; | |
| 58 private static int INTERPRETER_FRAME_BCX_OFFSET; | |
| 59 private static int INTERPRETER_FRAME_INITIAL_SP_OFFSET; | |
| 60 private static int INTERPRETER_FRAME_MONITOR_BLOCK_TOP_OFFSET; | |
| 61 private static int INTERPRETER_FRAME_MONITOR_BLOCK_BOTTOM_OFFSET; | |
| 62 | |
| 63 // Entry frames | |
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64 private static int ENTRY_FRAME_CALL_WRAPPER_OFFSET; |
| 0 | 65 |
| 66 // Native frames | |
| 67 private static final int NATIVE_FRAME_INITIAL_PARAM_OFFSET = 2; | |
| 68 | |
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69 private static VMReg rbp; |
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70 |
| 0 | 71 static { |
| 72 VM.registerVMInitializedObserver(new Observer() { | |
| 73 public void update(Observable o, Object data) { | |
| 74 initialize(VM.getVM().getTypeDataBase()); | |
| 75 } | |
| 76 }); | |
| 77 } | |
| 78 | |
| 79 private static synchronized void initialize(TypeDataBase db) { | |
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80 INTERPRETER_FRAME_MDX_OFFSET = INTERPRETER_FRAME_METHOD_OFFSET - 1; |
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81 INTERPRETER_FRAME_CACHE_OFFSET = INTERPRETER_FRAME_MDX_OFFSET - 1; |
| 0 | 82 INTERPRETER_FRAME_LOCALS_OFFSET = INTERPRETER_FRAME_CACHE_OFFSET - 1; |
| 83 INTERPRETER_FRAME_BCX_OFFSET = INTERPRETER_FRAME_LOCALS_OFFSET - 1; | |
| 84 INTERPRETER_FRAME_INITIAL_SP_OFFSET = INTERPRETER_FRAME_BCX_OFFSET - 1; | |
| 85 INTERPRETER_FRAME_MONITOR_BLOCK_TOP_OFFSET = INTERPRETER_FRAME_INITIAL_SP_OFFSET; | |
| 86 INTERPRETER_FRAME_MONITOR_BLOCK_BOTTOM_OFFSET = INTERPRETER_FRAME_INITIAL_SP_OFFSET; | |
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87 |
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88 ENTRY_FRAME_CALL_WRAPPER_OFFSET = db.lookupIntConstant("frame::entry_frame_call_wrapper_offset"); |
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89 if (VM.getVM().getAddressSize() == 4) { |
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90 rbp = new VMReg(5); |
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91 } else { |
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92 rbp = new VMReg(5 << 1); |
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93 } |
| 0 | 94 } |
| 95 | |
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96 |
| 0 | 97 // an additional field beyond sp and pc: |
| 98 Address raw_fp; // frame pointer | |
| 99 private Address raw_unextendedSP; | |
| 100 | |
| 101 private X86Frame() { | |
| 102 } | |
| 103 | |
| 104 private void adjustForDeopt() { | |
| 105 if ( pc != null) { | |
| 106 // Look for a deopt pc and if it is deopted convert to original pc | |
| 107 CodeBlob cb = VM.getVM().getCodeCache().findBlob(pc); | |
| 108 if (cb != null && cb.isJavaMethod()) { | |
| 109 NMethod nm = (NMethod) cb; | |
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110 if (pc.equals(nm.deoptHandlerBegin())) { |
| 0 | 111 if (Assert.ASSERTS_ENABLED) { |
| 112 Assert.that(this.getUnextendedSP() != null, "null SP in Java frame"); | |
| 113 } | |
| 114 // adjust pc if frame is deoptimized. | |
| 115 pc = this.getUnextendedSP().getAddressAt(nm.origPCOffset()); | |
| 116 deoptimized = true; | |
| 117 } | |
| 118 } | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 public X86Frame(Address raw_sp, Address raw_fp, Address pc) { | |
| 123 this.raw_sp = raw_sp; | |
| 124 this.raw_unextendedSP = raw_sp; | |
| 125 this.raw_fp = raw_fp; | |
| 126 this.pc = pc; | |
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127 adjustUnextendedSP(); |
| 0 | 128 |
| 129 // Frame must be fully constructed before this call | |
| 130 adjustForDeopt(); | |
| 131 | |
| 132 if (DEBUG) { | |
| 133 System.out.println("X86Frame(sp, fp, pc): " + this); | |
| 134 dumpStack(); | |
| 135 } | |
| 136 } | |
| 137 | |
| 138 public X86Frame(Address raw_sp, Address raw_fp) { | |
| 139 this.raw_sp = raw_sp; | |
| 140 this.raw_unextendedSP = raw_sp; | |
| 141 this.raw_fp = raw_fp; | |
| 142 this.pc = raw_sp.getAddressAt(-1 * VM.getVM().getAddressSize()); | |
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143 adjustUnextendedSP(); |
| 0 | 144 |
| 145 // Frame must be fully constructed before this call | |
| 146 adjustForDeopt(); | |
| 147 | |
| 148 if (DEBUG) { | |
| 149 System.out.println("X86Frame(sp, fp): " + this); | |
| 150 dumpStack(); | |
| 151 } | |
| 152 } | |
| 153 | |
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154 public X86Frame(Address raw_sp, Address raw_unextendedSp, Address raw_fp, Address pc) { |
| 0 | 155 this.raw_sp = raw_sp; |
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156 this.raw_unextendedSP = raw_unextendedSp; |
| 0 | 157 this.raw_fp = raw_fp; |
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158 this.pc = pc; |
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159 adjustUnextendedSP(); |
| 0 | 160 |
| 161 // Frame must be fully constructed before this call | |
| 162 adjustForDeopt(); | |
| 163 | |
| 164 if (DEBUG) { | |
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165 System.out.println("X86Frame(sp, unextendedSP, fp, pc): " + this); |
| 0 | 166 dumpStack(); |
| 167 } | |
| 168 | |
| 169 } | |
| 170 | |
| 171 public Object clone() { | |
| 172 X86Frame frame = new X86Frame(); | |
| 173 frame.raw_sp = raw_sp; | |
| 174 frame.raw_unextendedSP = raw_unextendedSP; | |
| 175 frame.raw_fp = raw_fp; | |
| 176 frame.pc = pc; | |
| 177 frame.deoptimized = deoptimized; | |
| 178 return frame; | |
| 179 } | |
| 180 | |
| 181 public boolean equals(Object arg) { | |
| 182 if (arg == null) { | |
| 183 return false; | |
| 184 } | |
| 185 | |
| 186 if (!(arg instanceof X86Frame)) { | |
| 187 return false; | |
| 188 } | |
| 189 | |
| 190 X86Frame other = (X86Frame) arg; | |
| 191 | |
| 192 return (AddressOps.equal(getSP(), other.getSP()) && | |
| 193 AddressOps.equal(getUnextendedSP(), other.getUnextendedSP()) && | |
| 194 AddressOps.equal(getFP(), other.getFP()) && | |
| 195 AddressOps.equal(getPC(), other.getPC())); | |
| 196 } | |
| 197 | |
| 198 public int hashCode() { | |
| 199 if (raw_sp == null) { | |
| 200 return 0; | |
| 201 } | |
| 202 | |
| 203 return raw_sp.hashCode(); | |
| 204 } | |
| 205 | |
| 206 public String toString() { | |
| 207 return "sp: " + (getSP() == null? "null" : getSP().toString()) + | |
| 208 ", unextendedSP: " + (getUnextendedSP() == null? "null" : getUnextendedSP().toString()) + | |
| 209 ", fp: " + (getFP() == null? "null" : getFP().toString()) + | |
| 210 ", pc: " + (pc == null? "null" : pc.toString()); | |
| 211 } | |
| 212 | |
| 213 // accessors for the instance variables | |
| 214 public Address getFP() { return raw_fp; } | |
| 215 public Address getSP() { return raw_sp; } | |
| 216 public Address getID() { return raw_sp; } | |
| 217 | |
| 218 // FIXME: not implemented yet (should be done for Solaris/X86) | |
| 219 public boolean isSignalHandlerFrameDbg() { return false; } | |
| 220 public int getSignalNumberDbg() { return 0; } | |
| 221 public String getSignalNameDbg() { return null; } | |
| 222 | |
| 223 public boolean isInterpretedFrameValid() { | |
| 224 if (Assert.ASSERTS_ENABLED) { | |
| 225 Assert.that(isInterpretedFrame(), "Not an interpreted frame"); | |
| 226 } | |
| 227 | |
| 228 // These are reasonable sanity checks | |
| 229 if (getFP() == null || getFP().andWithMask(0x3) != null) { | |
| 230 return false; | |
| 231 } | |
| 232 | |
| 233 if (getSP() == null || getSP().andWithMask(0x3) != null) { | |
| 234 return false; | |
| 235 } | |
| 236 | |
| 237 if (getFP().addOffsetTo(INTERPRETER_FRAME_INITIAL_SP_OFFSET * VM.getVM().getAddressSize()).lessThan(getSP())) { | |
| 238 return false; | |
| 239 } | |
| 240 | |
| 241 // These are hacks to keep us out of trouble. | |
| 242 // The problem with these is that they mask other problems | |
| 243 if (getFP().lessThanOrEqual(getSP())) { | |
| 244 // this attempts to deal with unsigned comparison above | |
| 245 return false; | |
| 246 } | |
| 247 | |
| 248 if (getFP().minus(getSP()) > 4096 * VM.getVM().getAddressSize()) { | |
| 249 // stack frames shouldn't be large. | |
| 250 return false; | |
| 251 } | |
| 252 | |
| 253 return true; | |
| 254 } | |
| 255 | |
| 256 // FIXME: not applicable in current system | |
| 257 // void patch_pc(Thread* thread, address pc); | |
| 258 | |
| 259 public Frame sender(RegisterMap regMap, CodeBlob cb) { | |
| 260 X86RegisterMap map = (X86RegisterMap) regMap; | |
| 261 | |
| 262 if (Assert.ASSERTS_ENABLED) { | |
| 263 Assert.that(map != null, "map must be set"); | |
| 264 } | |
| 265 | |
| 266 // Default is we done have to follow them. The sender_for_xxx will | |
| 267 // update it accordingly | |
| 268 map.setIncludeArgumentOops(false); | |
| 269 | |
| 270 if (isEntryFrame()) return senderForEntryFrame(map); | |
| 271 if (isInterpretedFrame()) return senderForInterpreterFrame(map); | |
| 272 | |
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273 if(cb == null) { |
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274 cb = VM.getVM().getCodeCache().findBlob(getPC()); |
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275 } else { |
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276 if (Assert.ASSERTS_ENABLED) { |
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277 Assert.that(cb.equals(VM.getVM().getCodeCache().findBlob(getPC())), "Must be the same"); |
| 0 | 278 } |
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279 } |
| 0 | 280 |
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281 if (cb != null) { |
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282 return senderForCompiledFrame(map, cb); |
| 0 | 283 } |
| 284 | |
| 285 // Must be native-compiled frame, i.e. the marshaling code for native | |
| 286 // methods that exists in the core system. | |
| 287 return new X86Frame(getSenderSP(), getLink(), getSenderPC()); | |
| 288 } | |
| 289 | |
| 290 private Frame senderForEntryFrame(X86RegisterMap map) { | |
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291 if (DEBUG) { |
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292 System.out.println("senderForEntryFrame"); |
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293 } |
| 0 | 294 if (Assert.ASSERTS_ENABLED) { |
| 295 Assert.that(map != null, "map must be set"); | |
| 296 } | |
| 297 // Java frame called from C; skip all C frames and return top C | |
| 298 // frame of that chunk as the sender | |
| 299 X86JavaCallWrapper jcw = (X86JavaCallWrapper) getEntryFrameCallWrapper(); | |
| 300 if (Assert.ASSERTS_ENABLED) { | |
| 301 Assert.that(!entryFrameIsFirst(), "next Java fp must be non zero"); | |
| 302 Assert.that(jcw.getLastJavaSP().greaterThan(getSP()), "must be above this frame on stack"); | |
| 303 } | |
| 304 X86Frame fr; | |
| 305 if (jcw.getLastJavaPC() != null) { | |
| 306 fr = new X86Frame(jcw.getLastJavaSP(), jcw.getLastJavaFP(), jcw.getLastJavaPC()); | |
| 307 } else { | |
| 308 fr = new X86Frame(jcw.getLastJavaSP(), jcw.getLastJavaFP()); | |
| 309 } | |
| 310 map.clear(); | |
| 311 if (Assert.ASSERTS_ENABLED) { | |
| 312 Assert.that(map.getIncludeArgumentOops(), "should be set by clear"); | |
| 313 } | |
| 314 return fr; | |
| 315 } | |
| 316 | |
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317 //------------------------------------------------------------------------------ |
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318 // frame::adjust_unextended_sp |
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319 private void adjustUnextendedSP() { |
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320 // If we are returning to a compiled MethodHandle call site, the |
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321 // saved_fp will in fact be a saved value of the unextended SP. The |
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322 // simplest way to tell whether we are returning to such a call site |
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323 // is as follows: |
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324 |
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325 CodeBlob cb = cb(); |
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326 NMethod senderNm = (cb == null) ? null : cb.asNMethodOrNull(); |
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327 if (senderNm != null) { |
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328 // If the sender PC is a deoptimization point, get the original |
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329 // PC. For MethodHandle call site the unextended_sp is stored in |
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330 // saved_fp. |
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331 if (senderNm.isDeoptMhEntry(getPC())) { |
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332 // DEBUG_ONLY(verifyDeoptMhOriginalPc(senderNm, getFP())); |
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333 raw_unextendedSP = getFP(); |
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334 } |
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335 else if (senderNm.isDeoptEntry(getPC())) { |
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336 // DEBUG_ONLY(verifyDeoptOriginalPc(senderNm, raw_unextendedSp)); |
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337 } |
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338 else if (senderNm.isMethodHandleReturn(getPC())) { |
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339 raw_unextendedSP = getFP(); |
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340 } |
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341 } |
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342 } |
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343 |
| 0 | 344 private Frame senderForInterpreterFrame(X86RegisterMap map) { |
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345 if (DEBUG) { |
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346 System.out.println("senderForInterpreterFrame"); |
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347 } |
| 0 | 348 Address unextendedSP = addressOfStackSlot(INTERPRETER_FRAME_SENDER_SP_OFFSET).getAddressAt(0); |
| 349 Address sp = addressOfStackSlot(SENDER_SP_OFFSET); | |
| 350 // We do not need to update the callee-save register mapping because above | |
| 351 // us is either another interpreter frame or a converter-frame, but never | |
| 352 // directly a compiled frame. | |
| 353 // 11/24/04 SFG. With the removal of adapter frames this is no longer true. | |
| 354 // However c2 no longer uses callee save register for java calls so there | |
| 355 // are no callee register to find. | |
| 356 | |
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357 if (map.getUpdateMap()) |
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358 updateMapWithSavedLink(map, addressOfStackSlot(LINK_OFFSET)); |
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359 |
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360 return new X86Frame(sp, unextendedSP, getLink(), getSenderPC()); |
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361 } |
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362 |
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363 private void updateMapWithSavedLink(RegisterMap map, Address savedFPAddr) { |
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364 map.setLocation(rbp, savedFPAddr); |
| 0 | 365 } |
| 366 | |
| 367 private Frame senderForCompiledFrame(X86RegisterMap map, CodeBlob cb) { | |
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368 if (DEBUG) { |
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369 System.out.println("senderForCompiledFrame"); |
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370 } |
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371 |
| 0 | 372 // |
| 373 // NOTE: some of this code is (unfortunately) duplicated in X86CurrentFrameGuess | |
| 374 // | |
| 375 | |
| 376 if (Assert.ASSERTS_ENABLED) { | |
| 377 Assert.that(map != null, "map must be set"); | |
| 378 } | |
| 379 | |
| 380 // frame owned by optimizing compiler | |
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381 if (Assert.ASSERTS_ENABLED) { |
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382 Assert.that(cb.getFrameSize() >= 0, "must have non-zero frame size"); |
| 0 | 383 } |
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384 Address senderSP = getUnextendedSP().addOffsetTo(cb.getFrameSize()); |
| 0 | 385 |
| 386 // On Intel the return_address is always the word on the stack | |
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387 Address senderPC = senderSP.getAddressAt(-1 * VM.getVM().getAddressSize()); |
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388 |
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389 // This is the saved value of EBP which may or may not really be an FP. |
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390 // It is only an FP if the sender is an interpreter frame (or C1?). |
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391 Address savedFPAddr = senderSP.addOffsetTo(- SENDER_SP_OFFSET * VM.getVM().getAddressSize()); |
| 0 | 392 |
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393 if (map.getUpdateMap()) { |
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394 // Tell GC to use argument oopmaps for some runtime stubs that need it. |
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395 // For C1, the runtime stub might not have oop maps, so set this flag |
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396 // outside of update_register_map. |
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397 map.setIncludeArgumentOops(cb.callerMustGCArguments()); |
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398 |
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399 if (cb.getOopMaps() != null) { |
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400 OopMapSet.updateRegisterMap(this, cb, map, true); |
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401 } |
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402 |
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403 // Since the prolog does the save and restore of EBP there is no oopmap |
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404 // for it so we must fill in its location as if there was an oopmap entry |
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405 // since if our caller was compiled code there could be live jvm state in it. |
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406 updateMapWithSavedLink(map, savedFPAddr); |
| 0 | 407 } |
| 408 | |
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409 return new X86Frame(senderSP, savedFPAddr.getAddressAt(0), senderPC); |
| 0 | 410 } |
| 411 | |
| 412 protected boolean hasSenderPD() { | |
| 413 // FIXME | |
| 414 // Check for null ebp? Need to do some tests. | |
| 415 return true; | |
| 416 } | |
| 417 | |
| 418 public long frameSize() { | |
| 419 return (getSenderSP().minus(getSP()) / VM.getVM().getAddressSize()); | |
| 420 } | |
| 421 | |
| 422 public Address getLink() { | |
| 423 return addressOfStackSlot(LINK_OFFSET).getAddressAt(0); | |
| 424 } | |
| 425 | |
| 426 // FIXME: not implementable yet | |
| 427 //inline void frame::set_link(intptr_t* addr) { *(intptr_t **)addr_at(link_offset) = addr; } | |
| 428 | |
| 429 public Address getUnextendedSP() { return raw_unextendedSP; } | |
| 430 | |
| 431 // Return address: | |
| 432 public Address getSenderPCAddr() { return addressOfStackSlot(RETURN_ADDR_OFFSET); } | |
| 433 public Address getSenderPC() { return getSenderPCAddr().getAddressAt(0); } | |
| 434 | |
| 435 // return address of param, zero origin index. | |
| 436 public Address getNativeParamAddr(int idx) { | |
| 437 return addressOfStackSlot(NATIVE_FRAME_INITIAL_PARAM_OFFSET + idx); | |
| 438 } | |
| 439 | |
| 440 public Address getSenderSP() { return addressOfStackSlot(SENDER_SP_OFFSET); } | |
| 441 | |
| 442 public Address addressOfInterpreterFrameLocals() { | |
| 443 return addressOfStackSlot(INTERPRETER_FRAME_LOCALS_OFFSET); | |
| 444 } | |
| 445 | |
| 446 private Address addressOfInterpreterFrameBCX() { | |
| 447 return addressOfStackSlot(INTERPRETER_FRAME_BCX_OFFSET); | |
| 448 } | |
| 449 | |
| 450 public int getInterpreterFrameBCI() { | |
| 451 // FIXME: this is not atomic with respect to GC and is unsuitable | |
| 452 // for use in a non-debugging, or reflective, system. Need to | |
| 453 // figure out how to express this. | |
| 454 Address bcp = addressOfInterpreterFrameBCX().getAddressAt(0); | |
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455 Address methodHandle = addressOfInterpreterFrameMethod().getAddressAt(0); |
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456 Method method = (Method)Metadata.instantiateWrapperFor(methodHandle); |
| 0 | 457 return bcpToBci(bcp, method); |
| 458 } | |
| 459 | |
| 460 public Address addressOfInterpreterFrameMDX() { | |
| 461 return addressOfStackSlot(INTERPRETER_FRAME_MDX_OFFSET); | |
| 462 } | |
| 463 | |
| 464 // FIXME | |
| 465 //inline int frame::interpreter_frame_monitor_size() { | |
| 466 // return BasicObjectLock::size(); | |
| 467 //} | |
| 468 | |
| 469 // expression stack | |
| 470 // (the max_stack arguments are used by the GC; see class FrameClosure) | |
| 471 | |
| 472 public Address addressOfInterpreterFrameExpressionStack() { | |
| 473 Address monitorEnd = interpreterFrameMonitorEnd().address(); | |
| 474 return monitorEnd.addOffsetTo(-1 * VM.getVM().getAddressSize()); | |
| 475 } | |
| 476 | |
| 477 public int getInterpreterFrameExpressionStackDirection() { return -1; } | |
| 478 | |
| 479 // top of expression stack | |
| 480 public Address addressOfInterpreterFrameTOS() { | |
| 481 return getSP(); | |
| 482 } | |
| 483 | |
| 484 /** Expression stack from top down */ | |
| 485 public Address addressOfInterpreterFrameTOSAt(int slot) { | |
| 486 return addressOfInterpreterFrameTOS().addOffsetTo(slot * VM.getVM().getAddressSize()); | |
| 487 } | |
| 488 | |
| 489 public Address getInterpreterFrameSenderSP() { | |
| 490 if (Assert.ASSERTS_ENABLED) { | |
| 491 Assert.that(isInterpretedFrame(), "interpreted frame expected"); | |
| 492 } | |
| 493 return addressOfStackSlot(INTERPRETER_FRAME_SENDER_SP_OFFSET).getAddressAt(0); | |
| 494 } | |
| 495 | |
| 496 // Monitors | |
| 497 public BasicObjectLock interpreterFrameMonitorBegin() { | |
| 498 return new BasicObjectLock(addressOfStackSlot(INTERPRETER_FRAME_MONITOR_BLOCK_BOTTOM_OFFSET)); | |
| 499 } | |
| 500 | |
| 501 public BasicObjectLock interpreterFrameMonitorEnd() { | |
| 502 Address result = addressOfStackSlot(INTERPRETER_FRAME_MONITOR_BLOCK_TOP_OFFSET).getAddressAt(0); | |
| 503 if (Assert.ASSERTS_ENABLED) { | |
| 504 // make sure the pointer points inside the frame | |
| 505 Assert.that(AddressOps.gt(getFP(), result), "result must < than frame pointer"); | |
| 506 Assert.that(AddressOps.lte(getSP(), result), "result must >= than stack pointer"); | |
| 507 } | |
| 508 return new BasicObjectLock(result); | |
| 509 } | |
| 510 | |
| 511 public int interpreterFrameMonitorSize() { | |
| 512 return BasicObjectLock.size(); | |
| 513 } | |
| 514 | |
| 515 // Method | |
| 516 public Address addressOfInterpreterFrameMethod() { | |
| 517 return addressOfStackSlot(INTERPRETER_FRAME_METHOD_OFFSET); | |
| 518 } | |
| 519 | |
| 520 // Constant pool cache | |
| 521 public Address addressOfInterpreterFrameCPCache() { | |
| 522 return addressOfStackSlot(INTERPRETER_FRAME_CACHE_OFFSET); | |
| 523 } | |
| 524 | |
| 525 // Entry frames | |
| 526 public JavaCallWrapper getEntryFrameCallWrapper() { | |
| 527 return new X86JavaCallWrapper(addressOfStackSlot(ENTRY_FRAME_CALL_WRAPPER_OFFSET).getAddressAt(0)); | |
| 528 } | |
| 529 | |
| 530 protected Address addressOfSavedOopResult() { | |
| 531 // offset is 2 for compiler2 and 3 for compiler1 | |
| 532 return getSP().addOffsetTo((VM.getVM().isClientCompiler() ? 2 : 3) * | |
| 533 VM.getVM().getAddressSize()); | |
| 534 } | |
| 535 | |
| 536 protected Address addressOfSavedReceiver() { | |
| 537 return getSP().addOffsetTo(-4 * VM.getVM().getAddressSize()); | |
| 538 } | |
| 539 | |
| 540 private void dumpStack() { | |
| 541 if (getFP() != null) { | |
| 542 for (Address addr = getSP().addOffsetTo(-5 * VM.getVM().getAddressSize()); | |
| 543 AddressOps.lte(addr, getFP().addOffsetTo(5 * VM.getVM().getAddressSize())); | |
| 544 addr = addr.addOffsetTo(VM.getVM().getAddressSize())) { | |
| 545 System.out.println(addr + ": " + addr.getAddressAt(0)); | |
| 546 } | |
| 547 } else { | |
| 548 for (Address addr = getSP().addOffsetTo(-5 * VM.getVM().getAddressSize()); | |
| 549 AddressOps.lte(addr, getSP().addOffsetTo(20 * VM.getVM().getAddressSize())); | |
| 550 addr = addr.addOffsetTo(VM.getVM().getAddressSize())) { | |
| 551 System.out.println(addr + ": " + addr.getAddressAt(0)); | |
| 552 } | |
| 553 } | |
| 554 } | |
| 555 } |