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  2. Program Files - Wikipedia

    en.wikipedia.org/wiki/Program_Files

    To be backwards compatible with the 8.3 limitations of the old File Allocation Table filenames, the names 'Program Files', 'Program Files (x86)' and 'Common Program Files' are shortened by the system to progra~N and common~N, where N is a digit, a sequence number that on a clean install will be 1 (or 1 and 2 when both 'Program Files' and ...

  3. Directory structure - Wikipedia

    en.wikipedia.org/wiki/Directory_structure

    These folders store dynamic-link library (DLL) files that implement the core features of Windows and Windows API. Any time a program asks Windows to load a DLL file and do not specify a path, these folders are searched after program's own folder is searched. [5] " System" stores 16-bit DLLs and is normally empty on 64-bit editions of Windows.

  4. WoW64 - Wikipedia

    en.wikipedia.org/wiki/WoW64

    There are two Program Files directories each visible to both 32-bit and 64-bit applications. The directory that stores the 32 bit files is called Program Files (x86) to differentiate between the two, while the 64 bit maintains the traditional Program Files name without any additional qualifier.

  5. x86 instruction listings - Wikipedia

    en.wikipedia.org/wiki/X86_instruction_listings

    The x86 instruction set refers to the set of instructions that x86-compatible microprocessors support. The instructions are usually part of an executable program, often stored as a computer file and executed on the processor. The x86 instruction set has been extended several times, introducing wider registers and datatypes as well as new ...

  6. Environment variable - Wikipedia

    en.wikipedia.org/wiki/Environment_variable

    This variable points to the Common Files subdirectory of the Program Files directory. The default on English-language systems is " C:\Program Files\Common Files ". In 64-bit editions of Windows (XP, 2003, Vista), there are also %ProgramFiles(x86)% , which defaults to " C:\Program Files (x86) ", and %ProgramW6432% , which defaults to " C ...

  7. x86 - Wikipedia

    en.wikipedia.org/wiki/X86

    Mass-produced x86-64 chips for the general market were available four years later, in 2003, after the time was spent for working prototypes to be tested and refined; about the same time, the initial name x86-64 was changed to AMD64. The success of the AMD64 line of processors coupled with lukewarm reception of the IA-64 architecture forced ...

  8. Position-independent code - Wikipedia

    en.wikipedia.org/wiki/Position-independent_code

    The programmer can load the base register from a register known to contain the entry point address, typically R15, or can use the BALR (Branch And Link, Register form) instruction (with a R2 Value of 0) to store the next sequential instruction's address into the base register, which was then coded explicitly or implicitly in each instruction ...

  9. Executable and Linkable Format - Wikipedia

    en.wikipedia.org/wiki/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 libraries, and core dumps.