jdk8-mips64-public/hotspot: src/share/vm/utilities/decoder.cpp@b92c45f2bc75

7016023: Enable building ARM and PPC from src/closed repository
Reviewed-by: dholmes, bdelsart

     1 /*

     2  * Copyright (c) 1997, 2010, 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 "prims/jvm.h"

    27 #include "utilities/decoder.hpp"

    29 Decoder::decoder_status  Decoder::_decoder_status = Decoder::no_error;

    30 bool                     Decoder::_initialized = false;

    32 #ifndef _WINDOWS

    34 // Implementation of common functionalities among Solaris and Linux

    35 #include "utilities/elfFile.hpp"

    37 ElfFile* Decoder::_opened_elf_files = NULL;

    39 bool Decoder::can_decode_C_frame_in_vm() {

    40   return true;

    41 }

    43 void Decoder::initialize() {

    44   _initialized = true;

    45 }

    47 void Decoder::uninitialize() {

    48   if (_opened_elf_files != NULL) {

    49     delete _opened_elf_files;

    50     _opened_elf_files = NULL;

    51   }

    52   _initialized = false;

    53 }

    55 Decoder::decoder_status Decoder::decode(address addr, const char* filepath, char *buf, int buflen, int *offset) {

    56   if (_decoder_status != no_error) {

    57     return _decoder_status;

    58   }

    60   ElfFile* file = get_elf_file(filepath);

    61   if (_decoder_status != no_error) {

    62     return _decoder_status;

    63   }

    65   const char* symbol = file->decode(addr, offset);

    66   if (file->get_status() == out_of_memory) {

    67     _decoder_status = out_of_memory;

    68     return _decoder_status;

    69   } else if (symbol != NULL) {

    70     if (!demangle(symbol, buf, buflen)) {

    71       jio_snprintf(buf, buflen, "%s", symbol);

    72     }

    73     return no_error;

    74   } else {

    75     return symbol_not_found;

    76   }

    77 }

    79 ElfFile* Decoder::get_elf_file(const char* filepath) {

    80   if (_decoder_status != no_error) {

    81     return NULL;

    82   }

    83   ElfFile* file = _opened_elf_files;

    84   while (file != NULL) {

    85     if (file->same_elf_file(filepath)) {

    86       return file;

    87     }

    88     file = file->m_next;

    89   }

    91   file = new ElfFile(filepath);

    92   if (file == NULL) {

    93     _decoder_status = out_of_memory;

    94   }

    95   if (_opened_elf_files != NULL) {

    96     file->m_next = _opened_elf_files;

    97   }

    99   _opened_elf_files = file;

   100   return file;

   101 }

   103 #endif

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