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 */ 24 25 #include "precompiled.hpp" 26 #include "code/debugInfoRec.hpp" 27 #include "code/nmethod.hpp" 28 #include "code/pcDesc.hpp" 29 #include "code/scopeDesc.hpp" 30 #include "memory/resourceArea.hpp" 31 32 PcDesc::PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset) { 33 assert(sizeof(PcDescFlags) <= 4, "occupies more than a word"); 34 _pc_offset = pc_offset; 35 _scope_decode_offset = scope_decode_offset; 36 _obj_decode_offset = obj_decode_offset; 37 _flags.word = 0; 38 } 39 40 address PcDesc::real_pc(const nmethod* code) const { 41 return code->code_begin() + pc_offset(); 42 } 43 44 void PcDesc::print(nmethod* code) { 45 #ifndef PRODUCT 46 ResourceMark rm; 47 tty->print_cr("PcDesc(pc=0x%lx offset=%x):", real_pc(code), pc_offset()); 48 49 if (scope_decode_offset() == DebugInformationRecorder::serialized_null) { 50 return; 51 } 52 53 for (ScopeDesc* sd = code->scope_desc_at(real_pc(code)); 54 sd != NULL; 55 sd = sd->sender()) { 56 tty->print(" "); 57 sd->method()->print_short_name(tty); 58 tty->print(" @%d", sd->bci()); 59 if (sd->should_reexecute()) 60 tty->print(" reexecute=true"); 61 tty->cr(); 62 } 63 #endif 64 } 65 66 bool PcDesc::verify(nmethod* code) { 67 //Unimplemented(); 68 return true; 69 }