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Position-independent code

In computing, position-independent code (PIC) or position-independent executable (PIE) is a body of machine code that executes properly regardless of its memory address. PIC is commonly used for shared libraries, so that the same library code can be loaded at a location in each program's address space where it does not overlap with other memory in use…

History, Position-independent executables & SunOS 4.x and ELF

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Overview

History

SunOS 4.x and ELF

Windows DLLs

Position-independent executables

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Position-independent code

Nodes74
Edges73
Triples49
Avg. degree1.97
Density0.027027
Components1

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Position-independent code

Top relations

related to Position-independent executables · 13
Position-independent code → Apple's, Apple's App Store, ASLR, ELF, Exec Shield, It, Linux, PaX, PIC, PIE, Position-independent, The, While
related to history · 11
Position-independent code → April, CDC, Even, GE, IBM, In, March, OS, Programs, Those, UNIVAC
related to SunOS 4.x and ELF · 10
Position-independent code → Data, Global Offset Tables, GOT, GOTs, It, PLT, Procedure, There, This, When
related to References · 7
Position-independent code → Guide, Intel, Libraries Guide, Linker, Linux Position-Independent Code, Nios II Processor Reference, Oracle

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Important terminology

code address memory position-independent loaded pie program shared system use library addresses storage base segment 360 pic also ibm virtual

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
the IBM 701instance ofHistoryIn early computers0.80text
the CDC 6600instance ofposition-independent code was not necessary.Even on base and bounds systems0.80text
the GE 625instance ofposition-independent code was not necessary.Even on base and bounds systems0.80text
the UNIVAC 1107instance ofposition-independent code was not necessary.Even on base and bounds systems0.80text
once the OS loaded code into a job's storageinstance ofposition-independent code was not necessary.Even on base and bounds systems0.80text
it could only run from the relative address at which it was loaded.Burroughs introduced a segmented systeminstance ofposition-independent code was not necessary.Even on base and bounds systems0.80text
the B5000instance ofposition-independent code was not necessary.Even on base and bounds systems0.80text
Burroughs MCP on the Burroughs B5000instance ofon early segmented systems0.80text
Position-independent coderelated to historyIn0.60section
Position-independent coderelated to historyIBM0.60section
Position-independent coderelated to historyApril0.60section
Position-independent coderelated to historyUNIVAC0.60section

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