The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2020
Filed:
Oct. 31, 2018
International Business Machines Corporation, Armonk, NY (US);
William J. Schmidt, Rochester, MN (US);
Ulrich Weigand, Tuebingen, DE;
Alan David Modra, Golden Grove, AU;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A compiler and linker include multiple addressing mode resolvers that generate code to resolve a plurality of function calls that use different addressing modes. A first addressing mode is defined where a first address for first data is specified as an offset from a base pointer. A second, relative addressing mode is defined where a second address for second data is specified as an offset from an address of an instruction that references the second data. The generated code assures correct operation when functions with different addressing modes are included in the computer program. The generated code preserves a base pointer when executing a function that uses relative addressing, when needed. The compiler inserts one or more relocation markers that trigger certain functions in the linker. A linker resolves the relocation markers inserted by the compiler, and generates code, when needed, that handles a mismatch between addressing modes.