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Topic: Object file


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  Object file - Wikipedia, the free encyclopedia
An object file format is a computer file format used for the storage of object code and related data typically produced by a compiler or assembler.
The design and/or choice of an object file format is a key part of overall system design; it affects the performance of the linker and thus programmer turnaround while developing, and if the format is used for executables, the design also affects the time programs take to begin running, and thus the responsiveness for users.
Most object file formats are structured as blocks of data all of the same sort; these blocks can be paged in as needed by the virtual memory system, needing no further processing to be ready to use.
en.wikipedia.org /wiki/Object_file   (411 words)

  
 Dr. Dobb's | Object File Formats | July 22, 2001
Object files provide a concise and efficient representation for a compiled application, furnishing all the information needed to represent the state of the entire application at a point in time.
Object files provide a concise and efficient representation of a compiled application, and they encompass all the information needed to represent the state of the application at a point in time.
Note that in the COFF file we have just disassembled, although the format of the data in the object file is the same, the data may be represented differently.
www.ddj.com /184410191?pgno=1   (3389 words)

  
 File (Java 2 Platform SE 5.0)
Similarly, the canonical form of the pathname of an existing file or directory may be different from the canonical form of the same pathname after the file or directory is deleted.
The length, in bytes, of the file denoted by this abstract pathname, or
The canonical pathname of a file that resides on some other machine and is accessed via a remote-filesystem protocol such as SMB or NFS may or may not begin with one of the roots returned by this method.
java.sun.com /j2se/1.5.0/docs/api/java/io/File.html   (5115 words)

  
 What is an Object File?
object file is basically a file containing machine language instructions and data in a form that the linker can use to create an executable program.
A local definition is a definition of a routine or data that is accessible only within the object file in which it is defined.
Therefore, the compiler simply places external references in an object file's symbol table; the matching of external references to global definitions is left to the linker or loader.
docs.hp.com /en/B2355-90655/ch02s03.html   (322 words)

  
 Gtk-Gnutella: file_object.c File Reference
For example, the file could be removed by another process and file_object_open() would return the file descriptor of the already removed file.
When the last file object for this pathname is released, the file contents would be lost.
However this is not necessarily the same file referenced by the file object.
gtk-gnutella.sourceforge.net /doxygen/file__object_8c.html   (1160 words)

  
 Object File Format
The format of these files revolves around the notion of a common header that is prepended to each file ending with the
A secondary consideration is in the identity of what follows as being really a proper object file.
Since the nature of the file is in a simulation type environment, making the sizes of the segments some size other than their actual size is unnecessary.
pages.cpsc.ucalgary.ca /~dsb/PDP11/files/node2.html   (376 words)

  
 JavaScript File object proposal
The interface is a mix of the Server Side JS File object and the Java File object and tries to follow existing implicit JavaScript usage (readln instead of readLine, for example).
The File object gives two ways to access the data inside a file: a text oriented access, based on characters, and a binary oriented access, based on bytes.
With FILE-style files, however, not all operations are uniformly supported everywhere, after all it is the goal of NSPR to hide the discrepancies among different platforms.
www.mozilla.org /js/js-file-object.html   (2784 words)

  
 ActiveFile File Object
While it can also be used to take ownership of file, you must be logged in under the same account that you are trying to set this property to and that account must have permission to take ownership of the file.
Performs a binary comparison of the file object with the one specified by the Name parameter and returns True if the files are the same.
In addition to sending the contents of the file to the client, File.Download also sets the HTTP Last-Modified header to indicate when the file was last modified.
www.infomentum.com /ActiveFile/DOC/file.htm   (2584 words)

  
 MolScript v2.1: Object file format
It is possible, for instance, to define within one single object file a surface consisting of triangle strips, and a number of points (dots) outside the surface.
The file format is free, meaning that the different items (object codes and numerical values) must be separated by white-space characters (space, tab or newline) but otherwise the items may be placed anywhere on a line, or split up between lines.
A line object may contain more than two vertices, in which case it becomes a so-called polyline, where each vertex is connected by a line to the next.
www.avatar.se /molscript/doc/object.html   (870 words)

  
 size -- display object file sizes   (Site not responding. Last check: 2007-11-03)
file may contain the overlays themselves; no information is given about the overlays.
files are libraries (archives) which may contain one or more object files in OMF or COFF format.
Because of a totally different object module and linker format and philosophy, this command is compatible with the UNIX command in name and invocation form only.
www.mkssoftware.com /docs/man1/size.1.asp   (216 words)

  
 Common Object File Format (COFF)
Windows NT uses a special format for the executable (image) files and object files.
The format used in these files are referred to as Portable Executable (PE) or Common Object File Format (COFF) files.
The PE/COFF file headers consist of a MS-DOS stub, file signature, COFF Header, and Optional Header.
support.microsoft.com /?id=121460   (784 words)

  
 The ELF Object File Format by Dissection | Linux Journal
Since ELF will eventually be the common object file format for Linux binaries, it is appropriate to document it a bit.
Since this is a.o file, it is not intended to be loaded into virtual memory, and this field is not filled in.
Next is the offset within the file of the section, and then is the size of the section.
www.linuxjournal.com /article/1060   (2781 words)

  
 ASP File Object
The File object is used to return information about a specified file.
This example demonstrates how to first create a FileSystemObject object, and then use the DateCreated property of the File object to get the date and time a specified file was created.
First; create a FileSystemObject object and then instantiate the File object through the GetFile method of the FileSystemObject object or through the Files property of the Folder object.
www.w3schools.com /asp/asp_ref_file.asp   (555 words)

  
 Microsoft Portable Executable and Common Object File Format Specification
This document specifies the structure of executable (image) files and object files under the Microsoft Windows family of operating systems.
These files are referred to as Portable Executable (PE) and Common Object File Format (COFF) files respectively.
Revision 8.0 of the Microsoft Portable Executable and Common Object File Format Specification specifies the structure of object and executable files supported by Visual Studio 2005 (Version 8.0 of Visual Studio) and the current Microsoft Windows family of operating systems.
www.microsoft.com /whdc/system/platform/firmware/PECOFF.mspx   (486 words)

  
 Object - Wikipedia, the free encyclopedia
Object (grammar), a sentence element, as a direct object or an indirect object
Object code, the output of a compiler or other translator program (also known as an "object file")
Objection, in law, to "object" is to claim a violation of the rules of a court
en.wikipedia.org /wiki/Object   (177 words)

  
 The ELF Object File Format: Introduction | Linux Journal
As ELF will eventually be the common object file format for Linux binaries, it is appropriate to document it a bit.
One interesting sidenote--Windows NT uses a file format based upon the COFF file format, the SVr3 file format that the Unix community is abandoning in favor of ELF.
An a.out object file will of course have relocations, but the linker must be able to fully resolve these to generate a usable executable.
www.linuxjournal.com /article/1059   (2975 words)

  
 Running a Object file - Dev Shed
Running a Object file C programming forum discussing all C derivatives, including C#, C++, Object-C, and even plain old vanilla C. These languages are low level languages, and used on projects such as device drivers, compilers, and even whole computer operating systems.
In another file (test.c) i have opened this file with fopen and this address is casted to funcp function pointer and called the that function pointer.
Also, an OBJ file contains machine code, but it also contains some stub headers for the linker to use, so you can't arbitrarily point a function pointer to the first byte of the OBJ file buffer, you need to find the area in the file where the function's code starts.
forums.devshed.com /c-programming-42/running-a-object-file-49607.html   (982 words)

  
 Common Object File Format (COFF)   (Site not responding. Last check: 2007-11-03)
COFF is the format of the output file produced by the assembler, as(CP), and the link editor, ld(CP).
The last four sections (relocation, line numbers, symbol table, and the string table) may be missing if the program is linked with the -s option of the ld command, or if the line number information, symbol table, and string table are removed by the strip(CP) command.
An object file that contains no errors or unresolved references is considered executable.
docsrv.sco.com:507 /en/topics/COFF.html   (224 words)

  
 MPS File Reader Object
It is expected that a major user of this software object will be academic software developers who are working in mathematical programming.
After downloading and installing the software, reference the object from your development environment and use the environment's object browser (and the brief help file included with the object) to access the properties and methods the object exposes.
The required files scrrun.dll and msvcrt.dll are not included in the package because they frequently cause installation difficulties.
www.sce.carleton.ca /faculty/chinneck/MPSreader/MPSobject.html   (492 words)

  
 Scrap Files Can Tear You Up
Anyone who doesn't know what a scrap object is, or who fails to recognize that icons and labels can lie so convincingly might easily regard a hostile scrap file or embedded object as being quite safe to open.
Save Contents; place the file where desired and then examine the saved file (which will not be a scrap file but the original embedded file), preferably with a binary file editor such as WinVi32.
The problem is simply that the hidden scrap file extension allows the files to masquerade as another file type, and the obscurity of these objects (lots of people just don't know about them) means that some users might fail to recognize them as executable programs.
www.pc-help.org /security/scrap.htm   (3197 words)

  
 Legacy File Formats
This is an article about how we used to write objects, some of the trouble we got into later, how I got out of that trouble, and a description of how to write a file with a format that will endure almost forever, be forward and backwardly compatible, and be universally parseable.
Data is the catch all for objects which cannot decompose into the simpler types or are best represented as an object stream, such as an NSColor or an NSTextStorage.
And, if you are an object purist such as this wizened old timer, you are not content until the view, the model and the controller components are all neatly separated.
www.stone.com /The_Cocoa_Files/Legacy_File_Formats.html   (1606 words)

  
 FreshPorts -- devel/p5-File-Find-Object
As File::Find is not object oriented, one cannot perform multiple searches in the same application.
The second problem of File::Find is its file processing: after starting its main loop, one cannot easilly wait for another event an so get the next result.
With File::Find::Object you can get the next file by calling the next() function, but setting a callback is still possible.
www.freshports.org /devel/p5-File-Find-Object   (135 words)

  
 LEMGA: object.h File Reference
This graph shows which files directly or indirectly include this file:
Go to the source code of this file.
Use a prefix p to allow several classes in a same.cpp file.
www.work.caltech.edu /ling/lemga/manual/object_8h.html   (404 words)

  
 15 Seconds : The Wonders of the File System Object
We know that in the file we just created, the first line is the user's name, the second line is their homepage, and the third line is their email address.
Then we simply open each file in the directory, see if the desired string is in that file and display a link to that file if the search string is found.
A great way to implement security would be to create the guestbook file we described earlier as read-only, and then change the attribute to writeable only when we need it, and immediately change it back.
www.15seconds.com /issue/000816.htm   (3395 words)

  
 ASP FileSystem Object
The FileSystemObject object is used to access the file system on the server.
It is also possible to retrieve file system information with this object.
Creates a text file and returns a TextStream object that can be used to read from, or write to the file
www.w3schools.com /asp/asp_ref_filesystem.asp   (640 words)

  
 File (Java 2 Platform SE v1.4.2)
Whether or not this method can move a file from one filesystem to another is platform-dependent.
If the other object is an abstract pathname, then this function behaves like
Copyright 2003 Sun Microsystems, Inc. All rights reserved.
java.sun.com /j2se/1.4.2/docs/api/java/io/File.html   (5125 words)

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