Global entry point and local entry point for callee function

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United States of America Patent

PATENT NO 9329875
APP PUB NO 20150309810A1
SERIAL NO

14263135

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Embodiments relate to a global entry point and a local entry point for a callee function. An aspect includes executing, by a processor, a function call from a calling function to the callee function. Another aspect includes, based on the function call being a direct and external function call, entering the callee function at the global entry point and executing prologue code in the callee function that calculates and stores a table of contents (TOC) value for the callee function in a TOC register. Another aspect includes, based on the function call being a direct and local function call, entering the callee function at the local entry point, wherein entering the callee function at the local entry point skips the prologue code. Another aspect includes, based on the function call being an indirect function call, entering the callee function at the global entry point and executing the prologue code.

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First Claim

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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
Weigand, Ulrich Holzgerlingen, DE 58 948

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