公开(公告)号：US20230393824A1

公开(公告)日：2023-12-07

申请号：US18167001

申请日：2023-02-09

Applicant: Apple Inc.

Inventor： Louis G. Gerbarg ,  Joseph J. Bonasera ,  Davide Italiano ,  Nick Kledzik ,  Peter Cooper ,  Mohamadou A. Abdoulaye

IPC: G06F8/54

CPC classification number: G06F8/54

Abstract: A dynamic linking system can be designed to dynamically resolve symbol references of pages associated with executable code as the pages are paged into virtual memory. The operating system can include a dynamic linker that uses metadata in the pages to determine symbol references that reference other code or values. Other code can include code in shared libraries. The dynamic linker can generate a data structure containing the symbol references in a small and dense format. The dynamic linker can send the data structure and other relevant data to the kernel once the symbol references have been identified. The kernel can perform the functions related to resolving the symbol references. For example, the kernel can resolve the symbol by determining a pointer value for the symbol, wherein the pointer value can be used to point to code or values. The kernel can resolve the symbol references and store the data structure, which contains the resolved symbol references.

公开(公告)号：US11308160B2

公开(公告)日：2022-04-19

申请号：US16146535

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Peter Cooper ,  Louis G. Gerbarg ,  Nick Kledzik

IPC: G06F21/54 ,  G06F16/901

Abstract: One embodiment provides for a computer-implemented method comprising generating a linked list table including a first component having linking data to be stored in a table data structure for one or more rebase and bind operations and second a component having instructions to implement the table data structure to perform the rebase and bind operations according to a linked list chain and executing the instructions in the second component of the linked list table to perform the one or more rebase and bind operations based on the linked list chain.

公开(公告)号：US20200082070A1

公开(公告)日：2020-03-12

申请号：US16664719

申请日：2019-10-25

Applicant: Apple Inc.

Inventor： Bernard J. Semeria ,  Devon S. Andrade ,  Jeremy C. Andrus ,  Ahmed Bougacha ,  Peter Cooper ,  Jacques Fortier ,  Louis G. Gerbarg ,  James H. Grosbach ,  Robert J. McCall ,  Daniel A. Steffen ,  Justin R. Unger

IPC: G06F21/44 ,  H04L9/32 ,  G06F15/78

Abstract: Embodiments described herein enable the interoperability between processes configured for pointer authentication and processes that are not configured for pointer authentication. Enabling the interoperability between such processes enables essential libraries, such as system libraries, to be compiled with pointer authentication, while enabling those libraries to still be used by processes that have not yet been compiled or configured to use pointer authentication.

公开(公告)号：US20200082069A1

公开(公告)日：2020-03-12

申请号：US16664714

申请日：2019-10-25

Applicant: Apple Inc.

Inventor： Bernard J. Semeria ,  Devon S. Andrade ,  Jeremy C. Andrus ,  Ahmed Bougacha ,  Peter Cooper ,  Jacques Fortier ,  Louis G. Gerbarg ,  James H. Grosbach ,  Robert J. McCall ,  Daniel A. Steffen ,  Justin R. Unger

IPC: G06F21/44 ,  H04L9/32 ,  G06F15/78

Abstract: Embodiments described herein enable the interoperability between processes configured for pointer authentication and processes that are not configured for pointer authentication. Enabling the interoperability between such processes enables essential libraries, such as system libraries, to be compiled with pointer authentication, while enabling those libraries to still be used by processes that have not yet been compiled or configured to use pointer authentication.