Invention Grant
- Patent Title: Exception interception
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Application No.: US16695745Application Date: 2019-11-26
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Publication No.: US11216280B2Publication Date: 2022-01-04
- Inventor: Simon John Craske
- Applicant: Arm Limited
- Applicant Address: GB Cambridge
- Assignee: Arm Limited
- Current Assignee: Arm Limited
- Current Assignee Address: GB Cambridge
- Agency: Nixon & Vanderhye P.C.
- Main IPC: G06F9/38
- IPC: G06F9/38 ; G06F9/30

Abstract:
Exception control circuitry controls exception handling for processing circuitry. In response to an initial exception occurring when the processing circuitry is in a given exception level, the initial exception to be handled in a target exception level, the exception control circuitry stores exception control information to at least one exception control register associated with the target exception level, indicating at least one property of the initial exception or of processor state at a time the initial exception occurred. When at least one exception intercept configuration parameter stored in a configuration register indicates that exception interception is enabled, after storing the exception control information, and before the processing circuitry starts processing an exception handler for handling the initial exception in the target exception level, the exception control circuitry triggers a further exception to be handled in a predetermined exception level.
Public/Granted literature
- US20210157601A1 EXCEPTION INTERCEPTION Public/Granted day:2021-05-27
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