Mercurial > hg > truffle
annotate src/share/vm/oops/constMethodOop.cpp @ 4155:394404b2d9bd
Removed strict requirement for GRAAL environment variable. It only needs to be set now if the graal directory is not in the directory hierarchy of GraalVM JDK.
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Wed, 21 Dec 2011 11:25:27 +0100 |
| parents | f95d63e2154a |
| children | 2fe087c3e814 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "oops/constMethodOop.hpp" | |
| 27 #include "oops/methodOop.hpp" | |
| 0 | 28 |
| 29 // Static initialization | |
| 30 const u2 constMethodOopDesc::MAX_IDNUM = 0xFFFE; | |
| 31 const u2 constMethodOopDesc::UNSET_IDNUM = 0xFFFF; | |
| 32 | |
| 33 // How big must this constMethodObject be? | |
| 34 | |
| 35 int constMethodOopDesc::object_size(int code_size, | |
| 36 int compressed_line_number_size, | |
| 37 int local_variable_table_length, | |
| 38 int checked_exceptions_length) { | |
| 39 int extra_bytes = code_size; | |
| 40 if (compressed_line_number_size > 0) { | |
| 41 extra_bytes += compressed_line_number_size; | |
| 42 } | |
| 43 if (checked_exceptions_length > 0) { | |
| 44 extra_bytes += sizeof(u2); | |
| 45 extra_bytes += checked_exceptions_length * sizeof(CheckedExceptionElement); | |
| 46 } | |
| 47 if (local_variable_table_length > 0) { | |
| 48 extra_bytes += sizeof(u2); | |
| 49 extra_bytes += | |
| 50 local_variable_table_length * sizeof(LocalVariableTableElement); | |
| 51 } | |
| 52 int extra_words = align_size_up(extra_bytes, BytesPerWord) / BytesPerWord; | |
| 53 return align_object_size(header_size() + extra_words); | |
| 54 } | |
| 55 | |
| 56 | |
| 57 // linenumber table - note that length is unknown until decompression, | |
| 58 // see class CompressedLineNumberReadStream. | |
| 59 | |
| 60 u_char* constMethodOopDesc::compressed_linenumber_table() const { | |
| 61 // Located immediately following the bytecodes. | |
| 62 assert(has_linenumber_table(), "called only if table is present"); | |
| 63 return code_end(); | |
| 64 } | |
| 65 | |
| 66 u2* constMethodOopDesc::checked_exceptions_length_addr() const { | |
| 67 // Located at the end of the constMethod. | |
| 68 assert(has_checked_exceptions(), "called only if table is present"); | |
| 69 return last_u2_element(); | |
| 70 } | |
| 71 | |
| 72 u2* constMethodOopDesc::localvariable_table_length_addr() const { | |
| 73 assert(has_localvariable_table(), "called only if table is present"); | |
| 74 if (has_checked_exceptions()) { | |
| 75 // If checked_exception present, locate immediately before them. | |
| 76 return (u2*) checked_exceptions_start() - 1; | |
| 77 } else { | |
| 78 // Else, the linenumber table is at the end of the constMethod. | |
| 79 return last_u2_element(); | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 | |
| 84 // Update the flags to indicate the presence of these optional fields. | |
| 85 void constMethodOopDesc::set_inlined_tables_length( | |
| 86 int checked_exceptions_len, | |
| 87 int compressed_line_number_size, | |
| 88 int localvariable_table_len) { | |
| 89 // Must be done in the order below, otherwise length_addr accessors | |
| 90 // will not work. Only set bit in header if length is positive. | |
| 91 assert(_flags == 0, "Error"); | |
| 92 if (compressed_line_number_size > 0) { | |
| 93 _flags |= _has_linenumber_table; | |
| 94 } | |
| 95 if (checked_exceptions_len > 0) { | |
| 96 _flags |= _has_checked_exceptions; | |
| 97 *(checked_exceptions_length_addr()) = checked_exceptions_len; | |
| 98 } | |
| 99 if (localvariable_table_len > 0) { | |
| 100 _flags |= _has_localvariable_table; | |
| 101 *(localvariable_table_length_addr()) = localvariable_table_len; | |
| 102 } | |
| 103 } | |
| 104 | |
| 105 | |
| 106 int constMethodOopDesc::checked_exceptions_length() const { | |
| 107 return has_checked_exceptions() ? *(checked_exceptions_length_addr()) : 0; | |
| 108 } | |
| 109 | |
| 110 | |
| 111 CheckedExceptionElement* constMethodOopDesc::checked_exceptions_start() const { | |
| 112 u2* addr = checked_exceptions_length_addr(); | |
| 113 u2 length = *addr; | |
| 114 assert(length > 0, "should only be called if table is present"); | |
| 115 addr -= length * sizeof(CheckedExceptionElement) / sizeof(u2); | |
| 116 return (CheckedExceptionElement*) addr; | |
| 117 } | |
| 118 | |
| 119 | |
| 120 int constMethodOopDesc::localvariable_table_length() const { | |
| 121 return has_localvariable_table() ? *(localvariable_table_length_addr()) : 0; | |
| 122 } | |
| 123 | |
| 124 | |
| 125 LocalVariableTableElement* constMethodOopDesc::localvariable_table_start() const { | |
| 126 u2* addr = localvariable_table_length_addr(); | |
| 127 u2 length = *addr; | |
| 128 assert(length > 0, "should only be called if table is present"); | |
| 129 addr -= length * sizeof(LocalVariableTableElement) / sizeof(u2); | |
| 130 return (LocalVariableTableElement*) addr; | |
| 131 } |