truffle: src/share/vm/interpreter/rewriter.cpp annotate

annotate src/share/vm/interpreter/rewriter.cpp @ 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	f6b0eb4e44cf

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	2 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1138 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1138 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1138 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1660 diff changeset	25 #include "precompiled.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1660 diff changeset	26 #include "interpreter/bytecodes.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1660 diff changeset	27 #include "interpreter/interpreter.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1660 diff changeset	28 #include "interpreter/rewriter.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1660 diff changeset	29 #include "memory/gcLocker.hpp"
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	30 #include "memory/metadataFactory.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1660 diff changeset	31 #include "memory/oopFactory.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1660 diff changeset	32 #include "memory/resourceArea.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1660 diff changeset	33 #include "oops/generateOopMap.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1660 diff changeset	34 #include "oops/objArrayOop.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1660 diff changeset	35 #include "oops/oop.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1660 diff changeset	36 #include "prims/methodComparator.hpp"
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	37 #include "prims/methodHandles.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	38
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	39 // Computes a CPC map (new_index -> original_index) for constant pool entries
0 a61af66fc99e Initial load duke parents: diff changeset	40 // that are referred to by the interpreter at runtime via the constant pool cache.
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	41 // Also computes a CP map (original_index -> new_index).
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	42 // Marks entries in CP which require additional processing.
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	43 void Rewriter::compute_index_maps() {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	44 const int length = _pool->length();
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	45 init_maps(length);
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	46 bool saw_mh_symbol = false;
0 a61af66fc99e Initial load duke parents: diff changeset	47 for (int i = 0; i < length; i++) {
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	48 int tag = _pool->tag_at(i).value();
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	49 switch (tag) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	50 case JVM_CONSTANT_InterfaceMethodref:
0 a61af66fc99e Initial load duke parents: diff changeset	51 case JVM_CONSTANT_Fieldref : // fall through
a61af66fc99e Initial load duke parents: diff changeset	52 case JVM_CONSTANT_Methodref : // fall through
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	53 add_cp_cache_entry(i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	54 break;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	55 case JVM_CONSTANT_String:
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	56 case JVM_CONSTANT_Object:
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	57 case JVM_CONSTANT_MethodHandle : // fall through
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	58 case JVM_CONSTANT_MethodType : // fall through
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	59 add_resolved_references_entry(i);
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	60 break;
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	61 case JVM_CONSTANT_Utf8:
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	62 if (_pool->symbol_at(i) == vmSymbols::java_lang_invoke_MethodHandle())
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	63 saw_mh_symbol = true;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	64 break;
0 a61af66fc99e Initial load duke parents: diff changeset	65 }
a61af66fc99e Initial load duke parents: diff changeset	66 }
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	67
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	68 // Record limits of resolved reference map for constant pool cache indices
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	69 record_map_limits();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	70
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	71 guarantee((int)_cp_cache_map.length()-1 <= (int)((u2)-1),
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	72 "all cp cache indexes fit in a u2");
1660 083fde3b838e 6964498: JSR 292 invokedynamic sites need local bootstrap methods jrose parents: 1602 diff changeset	73
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	74 if (saw_mh_symbol)
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	75 _method_handle_invokers.initialize(length, (int)0);
0 a61af66fc99e Initial load duke parents: diff changeset	76 }
a61af66fc99e Initial load duke parents: diff changeset	77
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	78 // Unrewrite the bytecodes if an error occurs.
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	79 void Rewriter::restore_bytecodes() {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	80 int len = _methods->length();
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	81
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	82 for (int i = len-1; i >= 0; i--) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	83 Method* method = _methods->at(i);
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	84 scan_method(method, true);
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	85 }
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	86 }
0 a61af66fc99e Initial load duke parents: diff changeset	87
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	88 // Creates a constant pool cache given a CPC map
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	89 void Rewriter::make_constant_pool_cache(TRAPS) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	90 const int length = _cp_cache_map.length();
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	91 ClassLoaderData* loader_data = _pool->pool_holder()->class_loader_data();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	92 ConstantPoolCache* cache =
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	93 ConstantPoolCache::allocate(loader_data, length, CHECK);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	94
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	95 // initialize object cache in constant pool
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	96 _pool->initialize_resolved_references(loader_data, _resolved_references_map,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	97 _resolved_reference_limit,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	98 CHECK);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	99
2226 c5a923563727 6912621: iCMS: Error: assert(_markBitMap.isMarked(addr + 1),"Missing Printezis bit?") ysr parents: 2142 diff changeset	100 No_Safepoint_Verifier nsv;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	101 cache->initialize(_cp_cache_map, _invokedynamic_references_map);
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	102 _pool->set_cache(cache);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	103 cache->set_constant_pool(_pool());
0 a61af66fc99e Initial load duke parents: diff changeset	104 }
a61af66fc99e Initial load duke parents: diff changeset	105
a61af66fc99e Initial load duke parents: diff changeset	106
a61af66fc99e Initial load duke parents: diff changeset	107
a61af66fc99e Initial load duke parents: diff changeset	108 // The new finalization semantics says that registration of
a61af66fc99e Initial load duke parents: diff changeset	109 // finalizable objects must be performed on successful return from the
a61af66fc99e Initial load duke parents: diff changeset	110 // Object.<init> constructor. We could implement this trivially if
a61af66fc99e Initial load duke parents: diff changeset	111 // <init> were never rewritten but since JVMTI allows this to occur, a
a61af66fc99e Initial load duke parents: diff changeset	112 // more complicated solution is required. A special return bytecode
a61af66fc99e Initial load duke parents: diff changeset	113 // is used only by Object.<init> to signal the finalization
a61af66fc99e Initial load duke parents: diff changeset	114 // registration point. Additionally local 0 must be preserved so it's
a61af66fc99e Initial load duke parents: diff changeset	115 // available to pass to the registration function. For simplicty we
a61af66fc99e Initial load duke parents: diff changeset	116 // require that local 0 is never overwritten so it's available as an
a61af66fc99e Initial load duke parents: diff changeset	117 // argument for registration.
a61af66fc99e Initial load duke parents: diff changeset	118
a61af66fc99e Initial load duke parents: diff changeset	119 void Rewriter::rewrite_Object_init(methodHandle method, TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	120 RawBytecodeStream bcs(method);
a61af66fc99e Initial load duke parents: diff changeset	121 while (!bcs.is_last_bytecode()) {
a61af66fc99e Initial load duke parents: diff changeset	122 Bytecodes::Code opcode = bcs.raw_next();
a61af66fc99e Initial load duke parents: diff changeset	123 switch (opcode) {
a61af66fc99e Initial load duke parents: diff changeset	124 case Bytecodes::_return: *bcs.bcp() = Bytecodes::_return_register_finalizer; break;
a61af66fc99e Initial load duke parents: diff changeset	125
a61af66fc99e Initial load duke parents: diff changeset	126 case Bytecodes::_istore:
a61af66fc99e Initial load duke parents: diff changeset	127 case Bytecodes::_lstore:
a61af66fc99e Initial load duke parents: diff changeset	128 case Bytecodes::_fstore:
a61af66fc99e Initial load duke parents: diff changeset	129 case Bytecodes::_dstore:
a61af66fc99e Initial load duke parents: diff changeset	130 case Bytecodes::_astore:
a61af66fc99e Initial load duke parents: diff changeset	131 if (bcs.get_index() != 0) continue;
a61af66fc99e Initial load duke parents: diff changeset	132
a61af66fc99e Initial load duke parents: diff changeset	133 // fall through
a61af66fc99e Initial load duke parents: diff changeset	134 case Bytecodes::_istore_0:
a61af66fc99e Initial load duke parents: diff changeset	135 case Bytecodes::_lstore_0:
a61af66fc99e Initial load duke parents: diff changeset	136 case Bytecodes::_fstore_0:
a61af66fc99e Initial load duke parents: diff changeset	137 case Bytecodes::_dstore_0:
a61af66fc99e Initial load duke parents: diff changeset	138 case Bytecodes::_astore_0:
a61af66fc99e Initial load duke parents: diff changeset	139 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(),
a61af66fc99e Initial load duke parents: diff changeset	140 "can't overwrite local 0 in Object.<init>");
a61af66fc99e Initial load duke parents: diff changeset	141 break;
a61af66fc99e Initial load duke parents: diff changeset	142 }
a61af66fc99e Initial load duke parents: diff changeset	143 }
a61af66fc99e Initial load duke parents: diff changeset	144 }
a61af66fc99e Initial load duke parents: diff changeset	145
a61af66fc99e Initial load duke parents: diff changeset	146
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	147 // Rewrite a classfile-order CP index into a native-order CPC index.
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	148 void Rewriter::rewrite_member_reference(address bcp, int offset, bool reverse) {
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	149 address p = bcp + offset;
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	150 if (!reverse) {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	151 int cp_index = Bytes::get_Java_u2(p);
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	152 int cache_index = cp_entry_to_cp_cache(cp_index);
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	153 Bytes::put_native_u2(p, cache_index);
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	154 if (!_method_handle_invokers.is_empty())
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	155 maybe_rewrite_invokehandle(p - 1, cp_index, cache_index, reverse);
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	156 } else {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	157 int cache_index = Bytes::get_native_u2(p);
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	158 int pool_index = cp_cache_entry_pool_index(cache_index);
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	159 Bytes::put_Java_u2(p, pool_index);
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	160 if (!_method_handle_invokers.is_empty())
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	161 maybe_rewrite_invokehandle(p - 1, pool_index, cache_index, reverse);
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	162 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	163 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	164
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	165
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	166 // Adjust the invocation bytecode for a signature-polymorphic method (MethodHandle.invoke, etc.)
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	167 void Rewriter::maybe_rewrite_invokehandle(address opc, int cp_index, int cache_index, bool reverse) {
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	168 if (!reverse) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	169 if ((*opc) == (u1)Bytecodes::_invokevirtual \|\|
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	170 // allow invokespecial as an alias, although it would be very odd:
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	171 (*opc) == (u1)Bytecodes::_invokespecial) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	172 assert(_pool->tag_at(cp_index).is_method(), "wrong index");
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	173 // Determine whether this is a signature-polymorphic method.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	174 if (cp_index >= _method_handle_invokers.length()) return;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	175 int status = _method_handle_invokers[cp_index];
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	176 assert(status >= -1 && status <= 1, "oob tri-state");
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	177 if (status == 0) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	178 if (_pool->klass_ref_at_noresolve(cp_index) == vmSymbols::java_lang_invoke_MethodHandle() &&
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	179 MethodHandles::is_signature_polymorphic_name(SystemDictionary::MethodHandle_klass(),
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	180 _pool->name_ref_at(cp_index))) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	181 // we may need a resolved_refs entry for the appendix
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	182 add_invokedynamic_resolved_references_entry(cp_index, cache_index);
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	183 status = +1;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	184 } else {
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	185 status = -1;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	186 }
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	187 _method_handle_invokers[cp_index] = status;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	188 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	189 // We use a special internal bytecode for such methods (if non-static).
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	190 // The basic reason for this is that such methods need an extra "appendix" argument
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	191 // to transmit the call site's intended call type.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	192 if (status > 0) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	193 (*opc) = (u1)Bytecodes::_invokehandle;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	194 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	195 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	196 } else {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	197 // Do not need to look at cp_index.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	198 if ((*opc) == (u1)Bytecodes::_invokehandle) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	199 (*opc) = (u1)Bytecodes::_invokevirtual;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	200 // Ignore corner case of original _invokespecial instruction.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	201 // This is safe because (a) the signature polymorphic method was final, and
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	202 // (b) the implementation of MethodHandle will not call invokespecial on it.
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	203 }
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	204 }
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	205 }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	206
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	207
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	208 void Rewriter::rewrite_invokedynamic(address bcp, int offset, bool reverse) {
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	209 address p = bcp + offset;
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	210 assert(p[-1] == Bytecodes::_invokedynamic, "not invokedynamic bytecode");
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	211 if (!reverse) {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	212 int cp_index = Bytes::get_Java_u2(p);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	213 int cache_index = add_invokedynamic_cp_cache_entry(cp_index);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	214 add_invokedynamic_resolved_references_entry(cp_index, cache_index);
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	215 // Replace the trailing four bytes with a CPC index for the dynamic
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	216 // call site. Unlike other CPC entries, there is one per bytecode,
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	217 // not just one per distinct CP entry. In other words, the
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	218 // CPC-to-CP relation is many-to-one for invokedynamic entries.
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	219 // This means we must use a larger index size than u2 to address
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	220 // all these entries. That is the main reason invokedynamic
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	221 // must have a five-byte instruction format. (Of course, other JVM
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	222 // implementations can use the bytes for other purposes.)
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	223 Bytes::put_native_u4(p, ConstantPool::encode_invokedynamic_index(cache_index));
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	224 // Note: We use native_u4 format exclusively for 4-byte indexes.
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	225 } else {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	226 // callsite index
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	227 int cache_index = ConstantPool::decode_invokedynamic_index(
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	228 Bytes::get_native_u4(p));
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	229 int cp_index = cp_cache_entry_pool_index(cache_index);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	230 assert(_pool->tag_at(cp_index).is_invoke_dynamic(), "wrong index");
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	231 // zero out 4 bytes
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	232 Bytes::put_Java_u4(p, 0);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	233 Bytes::put_Java_u2(p, cp_index);
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	234 }
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	235 }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	236
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	237
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	238 // Rewrite some ldc bytecodes to _fast_aldc
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	239 void Rewriter::maybe_rewrite_ldc(address bcp, int offset, bool is_wide,
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	240 bool reverse) {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	241 if (!reverse) {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	242 assert((*bcp) == (is_wide ? Bytecodes::_ldc_w : Bytecodes::_ldc), "not ldc bytecode");
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	243 address p = bcp + offset;
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	244 int cp_index = is_wide ? Bytes::get_Java_u2(p) : (u1)(*p);
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	245 constantTag tag = _pool->tag_at(cp_index).value();
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	246 if (tag.is_method_handle() \|\| tag.is_method_type() \|\| tag.is_string() \|\| tag.is_object()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	247 int ref_index = cp_entry_to_resolved_references(cp_index);
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	248 if (is_wide) {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	249 (*bcp) = Bytecodes::_fast_aldc_w;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	250 assert(ref_index == (u2)ref_index, "index overflow");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	251 Bytes::put_native_u2(p, ref_index);
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	252 } else {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	253 (*bcp) = Bytecodes::_fast_aldc;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	254 assert(ref_index == (u1)ref_index, "index overflow");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	255 (*p) = (u1)ref_index;
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	256 }
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	257 }
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	258 } else {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	259 Bytecodes::Code rewritten_bc =
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	260 (is_wide ? Bytecodes::_fast_aldc_w : Bytecodes::_fast_aldc);
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	261 if ((*bcp) == rewritten_bc) {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	262 address p = bcp + offset;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	263 int ref_index = is_wide ? Bytes::get_native_u2(p) : (u1)(*p);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	264 int pool_index = resolved_references_entry_to_pool_index(ref_index);
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	265 if (is_wide) {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	266 (*bcp) = Bytecodes::_ldc_w;
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	267 assert(pool_index == (u2)pool_index, "index overflow");
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	268 Bytes::put_Java_u2(p, pool_index);
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	269 } else {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	270 (*bcp) = Bytecodes::_ldc;
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	271 assert(pool_index == (u1)pool_index, "index overflow");
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	272 (*p) = (u1)pool_index;
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	273 }
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	274 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	275 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	276 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	277
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	278
0 a61af66fc99e Initial load duke parents: diff changeset	279 // Rewrites a method given the index_map information
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	280 void Rewriter::scan_method(Method* method, bool reverse) {
0 a61af66fc99e Initial load duke parents: diff changeset	281
a61af66fc99e Initial load duke parents: diff changeset	282 int nof_jsrs = 0;
a61af66fc99e Initial load duke parents: diff changeset	283 bool has_monitor_bytecodes = false;
a61af66fc99e Initial load duke parents: diff changeset	284
a61af66fc99e Initial load duke parents: diff changeset	285 {
a61af66fc99e Initial load duke parents: diff changeset	286 // We cannot tolerate a GC in this block, because we've
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	287 // cached the bytecodes in 'code_base'. If the Method*
0 a61af66fc99e Initial load duke parents: diff changeset	288 // moves, the bytecodes will also move.
a61af66fc99e Initial load duke parents: diff changeset	289 No_Safepoint_Verifier nsv;
a61af66fc99e Initial load duke parents: diff changeset	290 Bytecodes::Code c;
a61af66fc99e Initial load duke parents: diff changeset	291
a61af66fc99e Initial load duke parents: diff changeset	292 // Bytecodes and their length
a61af66fc99e Initial load duke parents: diff changeset	293 const address code_base = method->code_base();
a61af66fc99e Initial load duke parents: diff changeset	294 const int code_length = method->code_size();
a61af66fc99e Initial load duke parents: diff changeset	295
a61af66fc99e Initial load duke parents: diff changeset	296 int bc_length;
a61af66fc99e Initial load duke parents: diff changeset	297 for (int bci = 0; bci < code_length; bci += bc_length) {
a61af66fc99e Initial load duke parents: diff changeset	298 address bcp = code_base + bci;
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	299 int prefix_length = 0;
0 a61af66fc99e Initial load duke parents: diff changeset	300 c = (Bytecodes::Code)(*bcp);
a61af66fc99e Initial load duke parents: diff changeset	301
a61af66fc99e Initial load duke parents: diff changeset	302 // Since we have the code, see if we can get the length
a61af66fc99e Initial load duke parents: diff changeset	303 // directly. Some more complicated bytecodes will report
a61af66fc99e Initial load duke parents: diff changeset	304 // a length of zero, meaning we need to make another method
a61af66fc99e Initial load duke parents: diff changeset	305 // call to calculate the length.
a61af66fc99e Initial load duke parents: diff changeset	306 bc_length = Bytecodes::length_for(c);
a61af66fc99e Initial load duke parents: diff changeset	307 if (bc_length == 0) {
2142 8012aa3ccede 4926272: methodOopDesc::method_from_bcp is unsafe never parents: 2011 diff changeset	308 bc_length = Bytecodes::length_at(method, bcp);
0 a61af66fc99e Initial load duke parents: diff changeset	309
a61af66fc99e Initial load duke parents: diff changeset	310 // length_at will put us at the bytecode after the one modified
a61af66fc99e Initial load duke parents: diff changeset	311 // by 'wide'. We don't currently examine any of the bytecodes
a61af66fc99e Initial load duke parents: diff changeset	312 // modified by wide, but in case we do in the future...
a61af66fc99e Initial load duke parents: diff changeset	313 if (c == Bytecodes::_wide) {
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	314 prefix_length = 1;
0 a61af66fc99e Initial load duke parents: diff changeset	315 c = (Bytecodes::Code)bcp[1];
a61af66fc99e Initial load duke parents: diff changeset	316 }
a61af66fc99e Initial load duke parents: diff changeset	317 }
a61af66fc99e Initial load duke parents: diff changeset	318
a61af66fc99e Initial load duke parents: diff changeset	319 assert(bc_length != 0, "impossible bytecode length");
a61af66fc99e Initial load duke parents: diff changeset	320
a61af66fc99e Initial load duke parents: diff changeset	321 switch (c) {
a61af66fc99e Initial load duke parents: diff changeset	322 case Bytecodes::_lookupswitch : {
a61af66fc99e Initial load duke parents: diff changeset	323 #ifndef CC_INTERP
2142 8012aa3ccede 4926272: methodOopDesc::method_from_bcp is unsafe never parents: 2011 diff changeset	324 Bytecode_lookupswitch bc(method, bcp);
1565 ab102d5d923e 6939207: refactor constant pool index processing jrose parents: 1138 diff changeset	325 (*bcp) = (
2142 8012aa3ccede 4926272: methodOopDesc::method_from_bcp is unsafe never parents: 2011 diff changeset	326 bc.number_of_pairs() < BinarySwitchThreshold
0 a61af66fc99e Initial load duke parents: diff changeset	327 ? Bytecodes::_fast_linearswitch
a61af66fc99e Initial load duke parents: diff changeset	328 : Bytecodes::_fast_binaryswitch
a61af66fc99e Initial load duke parents: diff changeset	329 );
a61af66fc99e Initial load duke parents: diff changeset	330 #endif
a61af66fc99e Initial load duke parents: diff changeset	331 break;
a61af66fc99e Initial load duke parents: diff changeset	332 }
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	333 case Bytecodes::_fast_linearswitch:
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	334 case Bytecodes::_fast_binaryswitch: {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	335 #ifndef CC_INTERP
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	336 (*bcp) = Bytecodes::_lookupswitch;
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	337 #endif
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	338 break;
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	339 }
0 a61af66fc99e Initial load duke parents: diff changeset	340 case Bytecodes::_getstatic : // fall through
a61af66fc99e Initial load duke parents: diff changeset	341 case Bytecodes::_putstatic : // fall through
a61af66fc99e Initial load duke parents: diff changeset	342 case Bytecodes::_getfield : // fall through
a61af66fc99e Initial load duke parents: diff changeset	343 case Bytecodes::_putfield : // fall through
a61af66fc99e Initial load duke parents: diff changeset	344 case Bytecodes::_invokevirtual : // fall through
a61af66fc99e Initial load duke parents: diff changeset	345 case Bytecodes::_invokespecial : // fall through
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	346 case Bytecodes::_invokestatic :
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	347 case Bytecodes::_invokeinterface:
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	348 case Bytecodes::_invokehandle : // if reverse=true
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	349 rewrite_member_reference(bcp, prefix_length+1, reverse);
0 a61af66fc99e Initial load duke parents: diff changeset	350 break;
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	351 case Bytecodes::_invokedynamic:
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	352 rewrite_invokedynamic(bcp, prefix_length+1, reverse);
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	353 break;
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	354 case Bytecodes::_ldc:
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	355 case Bytecodes::_fast_aldc: // if reverse=true
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	356 maybe_rewrite_ldc(bcp, prefix_length+1, false, reverse);
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	357 break;
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	358 case Bytecodes::_ldc_w:
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 3748 diff changeset	359 case Bytecodes::_fast_aldc_w: // if reverse=true
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	360 maybe_rewrite_ldc(bcp, prefix_length+1, true, reverse);
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	361 break;
0 a61af66fc99e Initial load duke parents: diff changeset	362 case Bytecodes::_jsr : // fall through
a61af66fc99e Initial load duke parents: diff changeset	363 case Bytecodes::_jsr_w : nof_jsrs++; break;
a61af66fc99e Initial load duke parents: diff changeset	364 case Bytecodes::_monitorenter : // fall through
a61af66fc99e Initial load duke parents: diff changeset	365 case Bytecodes::_monitorexit : has_monitor_bytecodes = true; break;
a61af66fc99e Initial load duke parents: diff changeset	366 }
a61af66fc99e Initial load duke parents: diff changeset	367 }
a61af66fc99e Initial load duke parents: diff changeset	368 }
a61af66fc99e Initial load duke parents: diff changeset	369
a61af66fc99e Initial load duke parents: diff changeset	370 // Update access flags
a61af66fc99e Initial load duke parents: diff changeset	371 if (has_monitor_bytecodes) {
a61af66fc99e Initial load duke parents: diff changeset	372 method->set_has_monitor_bytecodes();
a61af66fc99e Initial load duke parents: diff changeset	373 }
a61af66fc99e Initial load duke parents: diff changeset	374
a61af66fc99e Initial load duke parents: diff changeset	375 // The present of a jsr bytecode implies that the method might potentially
a61af66fc99e Initial load duke parents: diff changeset	376 // have to be rewritten, so we run the oopMapGenerator on the method
a61af66fc99e Initial load duke parents: diff changeset	377 if (nof_jsrs > 0) {
a61af66fc99e Initial load duke parents: diff changeset	378 method->set_has_jsrs();
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	379 // Second pass will revisit this method.
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	380 assert(method->has_jsrs(), "didn't we just set this?");
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	381 }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	382 }
0 a61af66fc99e Initial load duke parents: diff changeset	383
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	384 // After constant pool is created, revisit methods containing jsrs.
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	385 methodHandle Rewriter::rewrite_jsrs(methodHandle method, TRAPS) {
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	386 ResourceMark rm(THREAD);
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	387 ResolveOopMapConflicts romc(method);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	388 methodHandle original_method = method;
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	389 method = romc.do_potential_rewrite(CHECK_(methodHandle()));
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	390 // Update monitor matching info.
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	391 if (romc.monitor_safe()) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	392 method->set_guaranteed_monitor_matching();
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	393 }
0 a61af66fc99e Initial load duke parents: diff changeset	394
a61af66fc99e Initial load duke parents: diff changeset	395 return method;
a61af66fc99e Initial load duke parents: diff changeset	396 }
a61af66fc99e Initial load duke parents: diff changeset	397
a61af66fc99e Initial load duke parents: diff changeset	398 void Rewriter::rewrite(instanceKlassHandle klass, TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	399 ResourceMark rm(THREAD);
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	400 Rewriter rw(klass, klass->constants(), klass->methods(), CHECK);
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	401 // (That's all, folks.)
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	402 }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	403
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	404
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	405 void Rewriter::rewrite(instanceKlassHandle klass, constantPoolHandle cpool, Array<Method> methods, TRAPS) {
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	406 ResourceMark rm(THREAD);
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	407 Rewriter rw(klass, cpool, methods, CHECK);
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	408 // (That's all, folks.)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	409 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	410
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	411
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	412 Rewriter::Rewriter(instanceKlassHandle klass, constantPoolHandle cpool, Array<Method> methods, TRAPS)
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	413 : _klass(klass),
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	414 _pool(cpool),
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	415 _methods(methods)
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	416 {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	417 assert(_pool->cache() == NULL, "constant pool cache must not be set yet");
0 a61af66fc99e Initial load duke parents: diff changeset	418
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	419 // determine index maps for Method* rewriting
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	420 compute_index_maps();
0 a61af66fc99e Initial load duke parents: diff changeset	421
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	422 if (RegisterFinalizersAtInit && _klass->name() == vmSymbols::java_lang_Object()) {
856 75596850f863 6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics jrose parents: 726 diff changeset	423 bool did_rewrite = false;
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	424 int i = _methods->length();
0 a61af66fc99e Initial load duke parents: diff changeset	425 while (i-- > 0) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	426 Method* method = _methods->at(i);
0 a61af66fc99e Initial load duke parents: diff changeset	427 if (method->intrinsic_id() == vmIntrinsics::_Object_init) {
a61af66fc99e Initial load duke parents: diff changeset	428 // rewrite the return bytecodes of Object.<init> to register the
a61af66fc99e Initial load duke parents: diff changeset	429 // object for finalization if needed.
a61af66fc99e Initial load duke parents: diff changeset	430 methodHandle m(THREAD, method);
a61af66fc99e Initial load duke parents: diff changeset	431 rewrite_Object_init(m, CHECK);
856 75596850f863 6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics jrose parents: 726 diff changeset	432 did_rewrite = true;
0 a61af66fc99e Initial load duke parents: diff changeset	433 break;
a61af66fc99e Initial load duke parents: diff changeset	434 }
a61af66fc99e Initial load duke parents: diff changeset	435 }
856 75596850f863 6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics jrose parents: 726 diff changeset	436 assert(did_rewrite, "must find Object::<init> to rewrite it");
0 a61af66fc99e Initial load duke parents: diff changeset	437 }
a61af66fc99e Initial load duke parents: diff changeset	438
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	439 // rewrite methods, in two passes
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	440 int len = _methods->length();
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	441
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	442 for (int i = len-1; i >= 0; i--) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	443 Method* method = _methods->at(i);
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	444 scan_method(method);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	445 }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	446
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	447 // allocate constant pool cache, now that we've seen all the bytecodes
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	448 make_constant_pool_cache(THREAD);
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	449
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	450 // Restore bytecodes to their unrewritten state if there are exceptions
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	451 // rewriting bytecodes or allocating the cpCache
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	452 if (HAS_PENDING_EXCEPTION) {
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	453 restore_bytecodes();
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	454 return;
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	455 }
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	456 }
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	457
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	458 // Relocate jsr/rets in a method. This can't be done with the rewriter
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	459 // stage because it can throw other exceptions, leaving the bytecodes
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	460 // pointing at constant pool cache entries.
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	461 // Link and check jvmti dependencies while we're iterating over the methods.
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	462 // JSR292 code calls with a different set of methods, so two entry points.
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	463 void Rewriter::relocate_and_link(instanceKlassHandle this_oop, TRAPS) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	464 relocate_and_link(this_oop, this_oop->methods(), THREAD);
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	465 }
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	466
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	467 void Rewriter::relocate_and_link(instanceKlassHandle this_oop,
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	468 Array<Method> methods, TRAPS) {
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	469 int len = methods->length();
d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	470 for (int i = len-1; i >= 0; i--) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	471 methodHandle m(THREAD, methods->at(i));
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	472
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	473 if (m->has_jsrs()) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	474 m = rewrite_jsrs(m, CHECK);
0 a61af66fc99e Initial load duke parents: diff changeset	475 // Method might have gotten rewritten.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	476 methods->at_put(i, m());
0 a61af66fc99e Initial load duke parents: diff changeset	477 }
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	478
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	479 // Set up method entry points for compiler and interpreter .
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	480 m->link_method(m, CHECK);
1574 1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	481
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	482 // This is for JVMTI and unrelated to relocator but the last thing we do
1574 1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	483 #ifdef ASSERT
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	484 if (StressMethodComparator) {
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	485 static int nmc = 0;
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	486 for (int j = i; j >= 0 && j >= i-4; j--) {
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	487 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc);
3748 d3b9f2be46ab 7033141: assert(has_cp_cache(i)) failed: oob coleenp parents: 2460 diff changeset	488 bool z = MethodComparator::methods_EMCP(m(),
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	489 methods->at(j));
1574 1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	490 if (j == i && !z) {
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	491 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes();
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	492 assert(z, "method must compare equal to itself");
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	493 }
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	494 }
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	495 }
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	496 #endif //ASSERT
0 a61af66fc99e Initial load duke parents: diff changeset	497 }
a61af66fc99e Initial load duke parents: diff changeset	498 }

Mercurial > hg > truffle

annotate src/share/vm/interpreter/rewriter.cpp @ 6725:da91efe96a93