Architected store and verify guard word instructions

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United States of America Patent

PATENT NO 9582274
SERIAL NO

14989240

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Corruption of call stacks is detected by using guard words placed in the call stacks. A store guard word instruction is used to store a guard word on a stack frame of a caller routine, and a verify guard word instruction issued by one or more callee routines is used to verify the guard word is an expected value. If the guard word is an unexpected value, corruption is indicated.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gschwind, Michael K Chappaqua, US 523 8571

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