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

annotate src/share/vm/interpreter/rewriter.cpp @ 1602:136b78722a08

6939203: JSR 292 needs method handle constants Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode. Reviewed-by: twisti, never

author	jrose
date	Wed, 09 Jun 2010 18:50:45 -0700
parents	e9ff18c4ace7
children	083fde3b838e

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
1579 e9ff18c4ace7 Merge jrose parents: 1552 1574 diff changeset	2 * Copyright (c) 1998, 2010, 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
a61af66fc99e Initial load duke parents: diff changeset	25 # include "incls/_precompiled.incl"
a61af66fc99e Initial load duke parents: diff changeset	26 # include "incls/_rewriter.cpp.incl"
a61af66fc99e Initial load duke parents: diff changeset	27
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	28 // Computes a CPC map (new_index -> original_index) for constant pool entries
0 a61af66fc99e Initial load duke parents: diff changeset	29 // 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	30 // Also computes a CP map (original_index -> new_index).
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	31 // Marks entries in CP which require additional processing.
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	32 void Rewriter::compute_index_maps() {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	33 const int length = _pool->length();
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	34 init_cp_map(length);
0 a61af66fc99e Initial load duke parents: diff changeset	35 for (int i = 0; i < length; i++) {
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	36 int tag = _pool->tag_at(i).value();
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	37 switch (tag) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	38 case JVM_CONSTANT_InterfaceMethodref:
0 a61af66fc99e Initial load duke parents: diff changeset	39 case JVM_CONSTANT_Fieldref : // fall through
a61af66fc99e Initial load duke parents: diff changeset	40 case JVM_CONSTANT_Methodref : // fall through
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	41 case JVM_CONSTANT_MethodHandle : // fall through
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	42 case JVM_CONSTANT_MethodType : // fall through
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	43 add_cp_cache_entry(i);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	44 break;
0 a61af66fc99e Initial load duke parents: diff changeset	45 }
a61af66fc99e Initial load duke parents: diff changeset	46 }
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	47
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	48 guarantee((int)_cp_cache_map.length()-1 <= (int)((u2)-1),
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	49 "all cp cache indexes fit in a u2");
0 a61af66fc99e Initial load duke parents: diff changeset	50 }
a61af66fc99e Initial load duke parents: diff changeset	51
a61af66fc99e Initial load duke parents: diff changeset	52
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	53 // Creates a constant pool cache given a CPC map
542 9a25e0c45327 6792421: assert(_bitMap->isMarked(addr+size-1),inconsistent Printezis mark) jmasa parents: 0 diff changeset	54 // This creates the constant pool cache initially in a state
9a25e0c45327 6792421: assert(_bitMap->isMarked(addr+size-1),inconsistent Printezis mark) jmasa parents: 0 diff changeset	55 // that is unsafe for concurrent GC processing but sets it to
9a25e0c45327 6792421: assert(_bitMap->isMarked(addr+size-1),inconsistent Printezis mark) jmasa parents: 0 diff changeset	56 // a safe mode before the constant pool cache is returned.
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	57 void Rewriter::make_constant_pool_cache(TRAPS) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	58 const int length = _cp_cache_map.length();
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	59 constantPoolCacheOop cache =
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	60 oopFactory::new_constantPoolCache(length, methodOopDesc::IsUnsafeConc, CHECK);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	61 cache->initialize(_cp_cache_map);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	62 _pool->set_cache(cache);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	63 cache->set_constant_pool(_pool());
0 a61af66fc99e Initial load duke parents: diff changeset	64 }
a61af66fc99e Initial load duke parents: diff changeset	65
a61af66fc99e Initial load duke parents: diff changeset	66
a61af66fc99e Initial load duke parents: diff changeset	67
a61af66fc99e Initial load duke parents: diff changeset	68 // The new finalization semantics says that registration of
a61af66fc99e Initial load duke parents: diff changeset	69 // finalizable objects must be performed on successful return from the
a61af66fc99e Initial load duke parents: diff changeset	70 // Object.<init> constructor. We could implement this trivially if
a61af66fc99e Initial load duke parents: diff changeset	71 // <init> were never rewritten but since JVMTI allows this to occur, a
a61af66fc99e Initial load duke parents: diff changeset	72 // more complicated solution is required. A special return bytecode
a61af66fc99e Initial load duke parents: diff changeset	73 // is used only by Object.<init> to signal the finalization
a61af66fc99e Initial load duke parents: diff changeset	74 // registration point. Additionally local 0 must be preserved so it's
a61af66fc99e Initial load duke parents: diff changeset	75 // available to pass to the registration function. For simplicty we
a61af66fc99e Initial load duke parents: diff changeset	76 // require that local 0 is never overwritten so it's available as an
a61af66fc99e Initial load duke parents: diff changeset	77 // argument for registration.
a61af66fc99e Initial load duke parents: diff changeset	78
a61af66fc99e Initial load duke parents: diff changeset	79 void Rewriter::rewrite_Object_init(methodHandle method, TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	80 RawBytecodeStream bcs(method);
a61af66fc99e Initial load duke parents: diff changeset	81 while (!bcs.is_last_bytecode()) {
a61af66fc99e Initial load duke parents: diff changeset	82 Bytecodes::Code opcode = bcs.raw_next();
a61af66fc99e Initial load duke parents: diff changeset	83 switch (opcode) {
a61af66fc99e Initial load duke parents: diff changeset	84 case Bytecodes::_return: *bcs.bcp() = Bytecodes::_return_register_finalizer; break;
a61af66fc99e Initial load duke parents: diff changeset	85
a61af66fc99e Initial load duke parents: diff changeset	86 case Bytecodes::_istore:
a61af66fc99e Initial load duke parents: diff changeset	87 case Bytecodes::_lstore:
a61af66fc99e Initial load duke parents: diff changeset	88 case Bytecodes::_fstore:
a61af66fc99e Initial load duke parents: diff changeset	89 case Bytecodes::_dstore:
a61af66fc99e Initial load duke parents: diff changeset	90 case Bytecodes::_astore:
a61af66fc99e Initial load duke parents: diff changeset	91 if (bcs.get_index() != 0) continue;
a61af66fc99e Initial load duke parents: diff changeset	92
a61af66fc99e Initial load duke parents: diff changeset	93 // fall through
a61af66fc99e Initial load duke parents: diff changeset	94 case Bytecodes::_istore_0:
a61af66fc99e Initial load duke parents: diff changeset	95 case Bytecodes::_lstore_0:
a61af66fc99e Initial load duke parents: diff changeset	96 case Bytecodes::_fstore_0:
a61af66fc99e Initial load duke parents: diff changeset	97 case Bytecodes::_dstore_0:
a61af66fc99e Initial load duke parents: diff changeset	98 case Bytecodes::_astore_0:
a61af66fc99e Initial load duke parents: diff changeset	99 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(),
a61af66fc99e Initial load duke parents: diff changeset	100 "can't overwrite local 0 in Object.<init>");
a61af66fc99e Initial load duke parents: diff changeset	101 break;
a61af66fc99e Initial load duke parents: diff changeset	102 }
a61af66fc99e Initial load duke parents: diff changeset	103 }
a61af66fc99e Initial load duke parents: diff changeset	104 }
a61af66fc99e Initial load duke parents: diff changeset	105
a61af66fc99e Initial load duke parents: diff changeset	106
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	107 // Rewrite a classfile-order CP index into a native-order CPC index.
1565 ab102d5d923e 6939207: refactor constant pool index processing jrose parents: 1138 diff changeset	108 void Rewriter::rewrite_member_reference(address bcp, int offset) {
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	109 address p = bcp + offset;
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	110 int cp_index = Bytes::get_Java_u2(p);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	111 int cache_index = cp_entry_to_cp_cache(cp_index);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	112 Bytes::put_native_u2(p, cache_index);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	113 }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	114
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	115
1565 ab102d5d923e 6939207: refactor constant pool index processing jrose parents: 1138 diff changeset	116 void Rewriter::rewrite_invokedynamic(address bcp, int offset) {
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	117 address p = bcp + offset;
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	118 assert(p[-1] == Bytecodes::_invokedynamic, "");
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	119 int cp_index = Bytes::get_Java_u2(p);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	120 int cpc = maybe_add_cp_cache_entry(cp_index); // add lazily
1059 389049f3f393 6858164: invokedynamic code needs some cleanup (post-6655638) jrose parents: 856 diff changeset	121 int cpc2 = add_secondary_cp_cache_entry(cpc);
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	122
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	123 // Replace the trailing four bytes with a CPC index for the dynamic
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	124 // call site. Unlike other CPC entries, there is one per bytecode,
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	125 // not just one per distinct CP entry. In other words, the
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	126 // CPC-to-CP relation is many-to-one for invokedynamic entries.
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	127 // This means we must use a larger index size than u2 to address
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	128 // all these entries. That is the main reason invokedynamic
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	129 // must have a five-byte instruction format. (Of course, other JVM
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	130 // implementations can use the bytes for other purposes.)
1059 389049f3f393 6858164: invokedynamic code needs some cleanup (post-6655638) jrose parents: 856 diff changeset	131 Bytes::put_native_u4(p, constantPoolCacheOopDesc::encode_secondary_index(cpc2));
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	132 // Note: We use native_u4 format exclusively for 4-byte indexes.
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	133 }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	134
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	135
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	136 // Rewrite some ldc bytecodes to _fast_aldc
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	137 void Rewriter::maybe_rewrite_ldc(address bcp, int offset, bool is_wide) {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	138 assert((*bcp) == (is_wide ? Bytecodes::_ldc_w : Bytecodes::_ldc), "");
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	139 address p = bcp + offset;
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	140 int cp_index = is_wide ? Bytes::get_Java_u2(p) : (u1)(*p);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	141 constantTag tag = _pool->tag_at(cp_index).value();
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	142 if (tag.is_method_handle() \|\| tag.is_method_type()) {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	143 int cache_index = cp_entry_to_cp_cache(cp_index);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	144 if (is_wide) {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	145 (*bcp) = Bytecodes::_fast_aldc_w;
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	146 assert(cache_index == (u2)cache_index, "");
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	147 Bytes::put_native_u2(p, cache_index);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	148 } else {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	149 (*bcp) = Bytecodes::_fast_aldc;
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	150 assert(cache_index == (u1)cache_index, "");
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	151 (*p) = (u1)cache_index;
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	152 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	153 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	154 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	155
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	156
0 a61af66fc99e Initial load duke parents: diff changeset	157 // Rewrites a method given the index_map information
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	158 void Rewriter::scan_method(methodOop method) {
0 a61af66fc99e Initial load duke parents: diff changeset	159
a61af66fc99e Initial load duke parents: diff changeset	160 int nof_jsrs = 0;
a61af66fc99e Initial load duke parents: diff changeset	161 bool has_monitor_bytecodes = false;
a61af66fc99e Initial load duke parents: diff changeset	162
a61af66fc99e Initial load duke parents: diff changeset	163 {
a61af66fc99e Initial load duke parents: diff changeset	164 // We cannot tolerate a GC in this block, because we've
a61af66fc99e Initial load duke parents: diff changeset	165 // cached the bytecodes in 'code_base'. If the methodOop
a61af66fc99e Initial load duke parents: diff changeset	166 // moves, the bytecodes will also move.
a61af66fc99e Initial load duke parents: diff changeset	167 No_Safepoint_Verifier nsv;
a61af66fc99e Initial load duke parents: diff changeset	168 Bytecodes::Code c;
a61af66fc99e Initial load duke parents: diff changeset	169
a61af66fc99e Initial load duke parents: diff changeset	170 // Bytecodes and their length
a61af66fc99e Initial load duke parents: diff changeset	171 const address code_base = method->code_base();
a61af66fc99e Initial load duke parents: diff changeset	172 const int code_length = method->code_size();
a61af66fc99e Initial load duke parents: diff changeset	173
a61af66fc99e Initial load duke parents: diff changeset	174 int bc_length;
a61af66fc99e Initial load duke parents: diff changeset	175 for (int bci = 0; bci < code_length; bci += bc_length) {
a61af66fc99e Initial load duke parents: diff changeset	176 address bcp = code_base + bci;
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	177 int prefix_length = 0;
0 a61af66fc99e Initial load duke parents: diff changeset	178 c = (Bytecodes::Code)(*bcp);
a61af66fc99e Initial load duke parents: diff changeset	179
a61af66fc99e Initial load duke parents: diff changeset	180 // Since we have the code, see if we can get the length
a61af66fc99e Initial load duke parents: diff changeset	181 // directly. Some more complicated bytecodes will report
a61af66fc99e Initial load duke parents: diff changeset	182 // a length of zero, meaning we need to make another method
a61af66fc99e Initial load duke parents: diff changeset	183 // call to calculate the length.
a61af66fc99e Initial load duke parents: diff changeset	184 bc_length = Bytecodes::length_for(c);
a61af66fc99e Initial load duke parents: diff changeset	185 if (bc_length == 0) {
a61af66fc99e Initial load duke parents: diff changeset	186 bc_length = Bytecodes::length_at(bcp);
a61af66fc99e Initial load duke parents: diff changeset	187
a61af66fc99e Initial load duke parents: diff changeset	188 // length_at will put us at the bytecode after the one modified
a61af66fc99e Initial load duke parents: diff changeset	189 // by 'wide'. We don't currently examine any of the bytecodes
a61af66fc99e Initial load duke parents: diff changeset	190 // modified by wide, but in case we do in the future...
a61af66fc99e Initial load duke parents: diff changeset	191 if (c == Bytecodes::_wide) {
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	192 prefix_length = 1;
0 a61af66fc99e Initial load duke parents: diff changeset	193 c = (Bytecodes::Code)bcp[1];
a61af66fc99e Initial load duke parents: diff changeset	194 }
a61af66fc99e Initial load duke parents: diff changeset	195 }
a61af66fc99e Initial load duke parents: diff changeset	196
a61af66fc99e Initial load duke parents: diff changeset	197 assert(bc_length != 0, "impossible bytecode length");
a61af66fc99e Initial load duke parents: diff changeset	198
a61af66fc99e Initial load duke parents: diff changeset	199 switch (c) {
a61af66fc99e Initial load duke parents: diff changeset	200 case Bytecodes::_lookupswitch : {
a61af66fc99e Initial load duke parents: diff changeset	201 #ifndef CC_INTERP
a61af66fc99e Initial load duke parents: diff changeset	202 Bytecode_lookupswitch* bc = Bytecode_lookupswitch_at(bcp);
1565 ab102d5d923e 6939207: refactor constant pool index processing jrose parents: 1138 diff changeset	203 (*bcp) = (
0 a61af66fc99e Initial load duke parents: diff changeset	204 bc->number_of_pairs() < BinarySwitchThreshold
a61af66fc99e Initial load duke parents: diff changeset	205 ? Bytecodes::_fast_linearswitch
a61af66fc99e Initial load duke parents: diff changeset	206 : Bytecodes::_fast_binaryswitch
a61af66fc99e Initial load duke parents: diff changeset	207 );
a61af66fc99e Initial load duke parents: diff changeset	208 #endif
a61af66fc99e Initial load duke parents: diff changeset	209 break;
a61af66fc99e Initial load duke parents: diff changeset	210 }
a61af66fc99e Initial load duke parents: diff changeset	211 case Bytecodes::_getstatic : // fall through
a61af66fc99e Initial load duke parents: diff changeset	212 case Bytecodes::_putstatic : // fall through
a61af66fc99e Initial load duke parents: diff changeset	213 case Bytecodes::_getfield : // fall through
a61af66fc99e Initial load duke parents: diff changeset	214 case Bytecodes::_putfield : // fall through
a61af66fc99e Initial load duke parents: diff changeset	215 case Bytecodes::_invokevirtual : // fall through
a61af66fc99e Initial load duke parents: diff changeset	216 case Bytecodes::_invokespecial : // fall through
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	217 case Bytecodes::_invokestatic :
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	218 case Bytecodes::_invokeinterface:
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	219 rewrite_member_reference(bcp, prefix_length+1);
0 a61af66fc99e Initial load duke parents: diff changeset	220 break;
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	221 case Bytecodes::_invokedynamic:
1565 ab102d5d923e 6939207: refactor constant pool index processing jrose parents: 1138 diff changeset	222 rewrite_invokedynamic(bcp, prefix_length+1);
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	223 break;
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	224 case Bytecodes::_ldc:
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	225 maybe_rewrite_ldc(bcp, prefix_length+1, false);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	226 break;
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	227 case Bytecodes::_ldc_w:
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	228 maybe_rewrite_ldc(bcp, prefix_length+1, true);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	229 break;
0 a61af66fc99e Initial load duke parents: diff changeset	230 case Bytecodes::_jsr : // fall through
a61af66fc99e Initial load duke parents: diff changeset	231 case Bytecodes::_jsr_w : nof_jsrs++; break;
a61af66fc99e Initial load duke parents: diff changeset	232 case Bytecodes::_monitorenter : // fall through
a61af66fc99e Initial load duke parents: diff changeset	233 case Bytecodes::_monitorexit : has_monitor_bytecodes = true; break;
a61af66fc99e Initial load duke parents: diff changeset	234 }
a61af66fc99e Initial load duke parents: diff changeset	235 }
a61af66fc99e Initial load duke parents: diff changeset	236 }
a61af66fc99e Initial load duke parents: diff changeset	237
a61af66fc99e Initial load duke parents: diff changeset	238 // Update access flags
a61af66fc99e Initial load duke parents: diff changeset	239 if (has_monitor_bytecodes) {
a61af66fc99e Initial load duke parents: diff changeset	240 method->set_has_monitor_bytecodes();
a61af66fc99e Initial load duke parents: diff changeset	241 }
a61af66fc99e Initial load duke parents: diff changeset	242
a61af66fc99e Initial load duke parents: diff changeset	243 // The present of a jsr bytecode implies that the method might potentially
a61af66fc99e Initial load duke parents: diff changeset	244 // have to be rewritten, so we run the oopMapGenerator on the method
a61af66fc99e Initial load duke parents: diff changeset	245 if (nof_jsrs > 0) {
a61af66fc99e Initial load duke parents: diff changeset	246 method->set_has_jsrs();
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	247 // Second pass will revisit this method.
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	248 assert(method->has_jsrs(), "");
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	249 }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	250 }
0 a61af66fc99e Initial load duke parents: diff changeset	251
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	252 // After constant pool is created, revisit methods containing jsrs.
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	253 methodHandle Rewriter::rewrite_jsrs(methodHandle method, TRAPS) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	254 ResolveOopMapConflicts romc(method);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	255 methodHandle original_method = method;
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	256 method = romc.do_potential_rewrite(CHECK_(methodHandle()));
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	257 if (method() != original_method()) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	258 // Insert invalid bytecode into original methodOop and set
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	259 // interpreter entrypoint, so that a executing this method
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	260 // will manifest itself in an easy recognizable form.
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	261 address bcp = original_method->bcp_from(0);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	262 *bcp = (u1)Bytecodes::_shouldnotreachhere;
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	263 int kind = Interpreter::method_kind(original_method);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	264 original_method->set_interpreter_kind(kind);
0 a61af66fc99e Initial load duke parents: diff changeset	265 }
a61af66fc99e Initial load duke parents: diff changeset	266
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	267 // Update monitor matching info.
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	268 if (romc.monitor_safe()) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	269 method->set_guaranteed_monitor_matching();
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	270 }
0 a61af66fc99e Initial load duke parents: diff changeset	271
a61af66fc99e Initial load duke parents: diff changeset	272 return method;
a61af66fc99e Initial load duke parents: diff changeset	273 }
a61af66fc99e Initial load duke parents: diff changeset	274
a61af66fc99e Initial load duke parents: diff changeset	275
a61af66fc99e Initial load duke parents: diff changeset	276 void Rewriter::rewrite(instanceKlassHandle klass, TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	277 ResourceMark rm(THREAD);
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	278 Rewriter rw(klass, klass->constants(), klass->methods(), CHECK);
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	279 // (That's all, folks.)
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	280 }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	281
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	282
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	283 void Rewriter::rewrite(instanceKlassHandle klass, constantPoolHandle cpool, objArrayHandle methods, TRAPS) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	284 ResourceMark rm(THREAD);
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	285 Rewriter rw(klass, cpool, methods, CHECK);
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	286 // (That's all, folks.)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	287 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	288
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	289
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	290 Rewriter::Rewriter(instanceKlassHandle klass, constantPoolHandle cpool, objArrayHandle methods, TRAPS)
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	291 : _klass(klass),
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	292 _pool(cpool),
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	293 _methods(methods)
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	294 {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	295 assert(_pool->cache() == NULL, "constant pool cache must not be set yet");
0 a61af66fc99e Initial load duke parents: diff changeset	296
a61af66fc99e Initial load duke parents: diff changeset	297 // determine index maps for methodOop rewriting
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	298 compute_index_maps();
0 a61af66fc99e Initial load duke parents: diff changeset	299
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	300 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	301 bool did_rewrite = false;
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	302 int i = _methods->length();
0 a61af66fc99e Initial load duke parents: diff changeset	303 while (i-- > 0) {
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	304 methodOop method = (methodOop)_methods->obj_at(i);
0 a61af66fc99e Initial load duke parents: diff changeset	305 if (method->intrinsic_id() == vmIntrinsics::_Object_init) {
a61af66fc99e Initial load duke parents: diff changeset	306 // rewrite the return bytecodes of Object.<init> to register the
a61af66fc99e Initial load duke parents: diff changeset	307 // object for finalization if needed.
a61af66fc99e Initial load duke parents: diff changeset	308 methodHandle m(THREAD, method);
a61af66fc99e Initial load duke parents: diff changeset	309 rewrite_Object_init(m, CHECK);
856 75596850f863 6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics jrose parents: 726 diff changeset	310 did_rewrite = true;
0 a61af66fc99e Initial load duke parents: diff changeset	311 break;
a61af66fc99e Initial load duke parents: diff changeset	312 }
a61af66fc99e Initial load duke parents: diff changeset	313 }
856 75596850f863 6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics jrose parents: 726 diff changeset	314 assert(did_rewrite, "must find Object::<init> to rewrite it");
0 a61af66fc99e Initial load duke parents: diff changeset	315 }
a61af66fc99e Initial load duke parents: diff changeset	316
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	317 // rewrite methods, in two passes
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	318 int i, len = _methods->length();
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	319
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	320 for (i = len; --i >= 0; ) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	321 methodOop method = (methodOop)_methods->obj_at(i);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	322 scan_method(method);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	323 }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	324
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	325 // allocate constant pool cache, now that we've seen all the bytecodes
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	326 make_constant_pool_cache(CHECK);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	327
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	328 for (i = len; --i >= 0; ) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	329 methodHandle m(THREAD, (methodOop)_methods->obj_at(i));
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	330
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	331 if (m->has_jsrs()) {
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	332 m = rewrite_jsrs(m, CHECK);
0 a61af66fc99e Initial load duke parents: diff changeset	333 // Method might have gotten rewritten.
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	334 _methods->obj_at_put(i, m());
0 a61af66fc99e Initial load duke parents: diff changeset	335 }
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	336
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	337 // Set up method entry points for compiler and interpreter.
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	338 m->link_method(m, CHECK);
1574 1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	339
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	340 #ifdef ASSERT
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	341 if (StressMethodComparator) {
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	342 static int nmc = 0;
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	343 for (int j = i; j >= 0 && j >= i-4; j--) {
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	344 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc);
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	345 bool z = MethodComparator::methods_EMCP(m(), (methodOop)_methods->obj_at(j));
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	346 if (j == i && !z) {
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	347 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes();
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	348 assert(z, "method must compare equal to itself");
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	349 }
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	350 }
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	351 }
1eb493f33423 6957080: MethodComparator needs stress testing jrose parents: 1565 diff changeset	352 #endif //ASSERT
0 a61af66fc99e Initial load duke parents: diff changeset	353 }
a61af66fc99e Initial load duke parents: diff changeset	354 }

Mercurial > hg > truffle

annotate src/share/vm/interpreter/rewriter.cpp @ 1602:136b78722a08