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v. t. e. A hex dump of an executable real mode loader. The first column consists of addresses of the first byte in the second column, which comprises bytes of data in hexadecimal notation ( least significant byte first), and the last column consists of the corresponding ASCII form. [ 1] In computer science, executable code, an executable file ...
For Microsoft Windows, OS/2, and DOS, .exe is the filename extension that denotes a file as being executable – a computer program – containing an entry point. [ 1] In addition to being executable (adjective) such a file is often called an executable (noun) which is sometimes abbreviated as EXE.
Executable and Linkable Format. An ELF file has two views: the program header shows the segments used at run time, whereas the section header lists the set of sections. In computing, the Executable and Linkable Format[ 2] ( ELF, formerly named Extensible Linking Format) is a common standard file format for executable files, object code, shared ...
Execution in computer and software engineering is the process by which a computer or virtual machine interprets and acts on the instructions of a computer program. Each instruction of a program is a description of a particular action which must be carried out, in order for a specific problem to be solved. Execution involves repeatedly following ...
Comparison of executable file formats. This is a comparison of binary executable file formats which, once loaded by a suitable executable loader, can be directly executed by the CPU rather than being interpreted by software. In addition to the binary application code, the executables may contain headers and tables with relocation and fixup ...
The Portable Executable ( PE) format is a file format for executables, object code, DLLs and others used in 32-bit and 64-bit versions of Windows operating systems, and in UEFI environments. [ 2] The PE format is a data structure that encapsulates the information necessary for the Windows OS loader to manage the wrapped executable code.
exec (system call) In computing, exec is a functionality of an operating system that runs an executable file in the context of an already existing process, replacing the previous executable. This act is also referred to as an overlay. It is especially important in Unix-like systems, although it also exists elsewhere.
Depending on the OS, a process may be made up of multiple threads of execution that execute instructions concurrently. [1] [2] While a computer program is a passive collection of instructions typically stored in a file on disk, a process is the execution of those instructions after being loaded from the disk into memory. Several processes may ...