jdk8-mips64-public/hotspot: src/share/vm/runtime/stubCodeGenerator.cpp@f8c9417e3571

7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
Reviewed-by: twisti, kvn, jrose

     1 /*

     2  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "compiler/disassembler.hpp"

    27 #include "oops/oop.inline.hpp"

    28 #include "prims/forte.hpp"

    29 #include "runtime/stubCodeGenerator.hpp"

    30 #ifdef TARGET_ARCH_x86

    31 # include "assembler_x86.inline.hpp"

    32 #endif

    33 #ifdef TARGET_ARCH_sparc

    34 # include "assembler_sparc.inline.hpp"

    35 #endif

    36 #ifdef TARGET_ARCH_zero

    37 # include "assembler_zero.inline.hpp"

    38 #endif

    39 #ifdef TARGET_ARCH_arm

    40 # include "assembler_arm.inline.hpp"

    41 #endif

    42 #ifdef TARGET_ARCH_ppc

    43 # include "assembler_ppc.inline.hpp"

    44 #endif

    47 // Implementation of StubCodeDesc

    49 StubCodeDesc* StubCodeDesc::_list = NULL;

    50 int           StubCodeDesc::_count = 0;

    53 StubCodeDesc* StubCodeDesc::desc_for(address pc) {

    54   StubCodeDesc* p = _list;

    55   while (p != NULL && !p->contains(pc)) p = p->_next;

    56   // p == NULL || p->contains(pc)

    57   return p;

    58 }

    61 StubCodeDesc* StubCodeDesc::desc_for_index(int index) {

    62   StubCodeDesc* p = _list;

    63   while (p != NULL && p->index() != index) p = p->_next;

    64   return p;

    65 }

    68 const char* StubCodeDesc::name_for(address pc) {

    69   StubCodeDesc* p = desc_for(pc);

    70   return p == NULL ? NULL : p->name();

    71 }

    74 void StubCodeDesc::print_on(outputStream* st) const {

    75   st->print(group());

    76   st->print("::");

    77   st->print(name());

    78   st->print(" [" INTPTR_FORMAT ", " INTPTR_FORMAT "[ (%d bytes)", begin(), end(), size_in_bytes());

    79 }

    81 // Implementation of StubCodeGenerator

    83 StubCodeGenerator::StubCodeGenerator(CodeBuffer* code, bool print_code) {

    84   _masm = new MacroAssembler(code);

    85   _first_stub = _last_stub = NULL;

    86   _print_code = print_code;

    87 }

    89 extern "C" {

    90   static int compare_cdesc(const void* void_a, const void* void_b) {

    91     int ai = (*((StubCodeDesc**) void_a))->index();

    92     int bi = (*((StubCodeDesc**) void_b))->index();

    93     return ai - bi;

    94   }

    95 }

    97 StubCodeGenerator::~StubCodeGenerator() {

    98   if (PrintStubCode || _print_code) {

    99     CodeBuffer* cbuf = _masm->code();

   100     CodeBlob*   blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());

   101     if (blob != NULL) {

   102       blob->set_comments(cbuf->comments());

   103     }

   104     bool saw_first = false;

   105     StubCodeDesc* toprint[1000];

   106     int toprint_len = 0;

   107     for (StubCodeDesc* cdesc = _last_stub; cdesc != NULL; cdesc = cdesc->_next) {

   108       toprint[toprint_len++] = cdesc;

   109       if (cdesc == _first_stub) { saw_first = true; break; }

   110     }

   111     assert(saw_first, "must get both first & last");

   112     // Print in reverse order:

   113     qsort(toprint, toprint_len, sizeof(toprint[0]), compare_cdesc);

   114     for (int i = 0; i < toprint_len; i++) {

   115       StubCodeDesc* cdesc = toprint[i];

   116       cdesc->print();

   117       tty->cr();

   118       Disassembler::decode(cdesc->begin(), cdesc->end());

   119       tty->cr();

   120     }

   121   }

   122 }

   125 void StubCodeGenerator::stub_prolog(StubCodeDesc* cdesc) {

   126   // default implementation - do nothing

   127 }

   130 void StubCodeGenerator::stub_epilog(StubCodeDesc* cdesc) {

   131   // default implementation - record the cdesc

   132   if (_first_stub == NULL)  _first_stub = cdesc;

   133   _last_stub = cdesc;

   134 }

   137 // Implementation of CodeMark

   139 StubCodeMark::StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name) {

   140   _cgen  = cgen;

   141   _cdesc = new StubCodeDesc(group, name, _cgen->assembler()->pc());

   142   _cgen->stub_prolog(_cdesc);

   143   // define the stub's beginning (= entry point) to be after the prolog:

   144   _cdesc->set_begin(_cgen->assembler()->pc());

   145 }

   147 StubCodeMark::~StubCodeMark() {

   148   _cgen->assembler()->flush();

   149   _cdesc->set_end(_cgen->assembler()->pc());

   150   assert(StubCodeDesc::_list == _cdesc, "expected order on list");

   151   _cgen->stub_epilog(_cdesc);

   152   Forte::register_stub(_cdesc->name(), _cdesc->begin(), _cdesc->end());

   154   if (JvmtiExport::should_post_dynamic_code_generated()) {

   155     JvmtiExport::post_dynamic_code_generated(_cdesc->name(), _cdesc->begin(), _cdesc->end());

   156   }

   157 }

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