62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
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/*
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* Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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// PcDescs map a physical PC (given as offset from start of nmethod) to
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// the corresponding source scope and byte code index.
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class nmethod;
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class PcDesc VALUE_OBJ_CLASS_SPEC {
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friend class VMStructs;
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private:
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int _pc_offset; // offset from start of nmethod
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int _scope_decode_offset; // offset for scope in nmethod
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int _obj_decode_offset;
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public:
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int pc_offset() const { return _pc_offset; }
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int scope_decode_offset() const { return _scope_decode_offset; }
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int obj_decode_offset() const { return _obj_decode_offset; }
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void set_pc_offset(int x) { _pc_offset = x; }
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void set_scope_decode_offset(int x) { _scope_decode_offset = x; }
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void set_obj_decode_offset(int x) { _obj_decode_offset = x; }
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// Constructor (only used for static in nmethod.cpp)
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// Also used by ScopeDesc::sender()]
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PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset);
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enum {
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// upper and lower exclusive limits real offsets:
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lower_offset_limit = -1,
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upper_offset_limit = (unsigned int)-1 >> 1
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};
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// Returns the real pc
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address real_pc(const nmethod* code) const;
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void print(nmethod* code);
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bool verify(nmethod* code);
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};
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