Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/debugger/win32/coff/SectionHeader.java @ 18665:96861e3f8cc5
made CFGPrinterObserver reset (upon close) properly
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 11 Dec 2014 22:14:30 +0100 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ package sun.jvm.hotspot.debugger.win32.coff; /** Describes the header of a section in a COFF file. The section headers are grouped together into the Section Table. (Some of the descriptions are taken directly from Microsoft's documentation and are copyrighted by Microsoft.) */ public interface SectionHeader { public String getName(); /** Total size of the section when loaded into memory. If this value is greater than Size of Raw Data, the section is zero-padded. This field is valid only for executable images and should be set to 0 for object files. */ public int getSize(); /** For executable images this is the address of the first byte of the section, when loaded into memory, relative to the image base. For object files, this field is the address of the first byte before relocation is applied; for simplicity, compilers should set this to zero. Otherwise, it is an arbitrary value that is subtracted from offsets during relocation. */ public int getVirtualAddress(); /** Size of the section (object file) or size of the initialized data on disk (image files). For executable image, this must be a multiple of FileAlignment from the optional header. If this is less than VirtualSize the remainder of the section is zero filled. Because this field is rounded while the VirtualSize field is not it is possible for this to be greater than VirtualSize as well. When a section contains only uninitialized data, this field should be 0. */ public int getSizeOfRawData(); /** File pointer to section's first page within the COFF file. For executable images, this must be a multiple of FileAlignment from the optional header. For object files, the value should be aligned on a four-byte boundary for best performance. When a section contains only uninitialized data, this field should be 0. */ public int getPointerToRawData(); /** File pointer to beginning of relocation entries for the section. Set to 0 for executable images or if there are no relocations. */ public int getPointerToRelocations(); /** File pointer to beginning of line-number entries for the section. Set to 0 if there are no COFF line numbers. */ public int getPointerToLineNumbers(); /** Number of relocation entries for the section. Set to 0 for executable images. */ public short getNumberOfRelocations(); /** Number of line-number entries for the section. */ public short getNumberOfLineNumbers(); /** Flags describing section's characteristics; see {@link sun.jvm.hotspot.debugger.win32.coff.SectionFlags}. */ public int getSectionFlags(); /** Returns true if the appropriate flag (from {@link sun.jvm.hotspot.debugger.win32.coff.SectionFlags}) is set. */ public boolean hasSectionFlag(int flag); /** This is only present for object files. Retrieves the COFF relocation at the given index; valid indices are numbered 0...getNumberOfRelocations() - 1. */ public COFFRelocation getCOFFRelocation(int index); /** Retrieves the COFF line number at the given index; valid indices are numbered 0...getNumberOfLineNumbers() - 1. */ public COFFLineNumber getCOFFLineNumber(int index); }