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Difference between revisions of "DEP"

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<b>D</b>ata <b>E</b>xecution <b>P</b>revention is a hardware-layer feature provided by modern [[processor]]s.  On Intel CPU's, this is called the '''NX bit''', and on AMD CPU's, this is called the '''XD bit'''.   
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<b>D</b>ata <b>E</b>xecution <b>P</b>revention is a hardware-layer feature provided by modern [[instruction set architecture]]s.  On Intel CPU's, this is called the '''NX bit''', and on AMD CPU's, this is called the '''XD bit'''.  These bits provide the [[assembly]] instructions '''jno''' and '''jo''', ''jump if no overflow'' and ''jump if overflow'', respectively.
  
  

Latest revision as of 03:40, 19 November 2012

Data Execution Prevention is a hardware-layer feature provided by modern instruction set architectures. On Intel CPU's, this is called the NX bit, and on AMD CPU's, this is called the XD bit. These bits provide the assembly instructions jno and jo, jump if no overflow and jump if overflow, respectively.