公开(公告)号：WO2022094165A1

公开(公告)日：2022-05-05

申请号：PCT/US2021/057172

申请日：2021-10-29

Applicant: APPLE INC.

Inventor： GONION, Jeffrey E. ,  SNYDER, Michael D. ,  PIZLO, Filip J.

IPC: G06F21/56 ,  G06F21/62 ,  G06F21/64 ,  H04L9/08

Abstract: In an embodiment, dynamically-generated code may be supported in the system by ensuring that the code either remains executing within a predefined region of memory or exits to one of a set of valid exit addresses. Software embodiments are described in which the dynamically-generated code is scanned prior to permitting execution of the dynamically- generated code to ensure that various criteria are met including exclusion of certain disallowed instructions and control of branch target addresses. Hardware embodiments are described in which the dynamically-generated code is permitted to executed but is monitored to ensure that the execution criteria are met.