Invention Grant
- Patent Title: Determining the status of run-time-instrumentation controls
- Patent Title (中): 确定运行时仪表控制的状态
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Application No.: US13792276Application Date: 2013-03-11
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Publication No.: US09250903B2Publication Date: 2016-02-02
- Inventor: Mark S. Farrell , Charles W. Gainey, Jr. , Chung-Lung K. Shum , Brian L. Smith
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machinecs Corporation
- Current Assignee: International Business Machinecs Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent William A. Kinnaman, Jr.
- Main IPC: G06F9/30
- IPC: G06F9/30 ; G06F11/36 ; G06F9/455
Abstract:
The invention relates to determining the status of run-time-instrumentation controls. The status is determined by executing a test run-time-instrumentation controls (TRIC) instruction. The TRIC instruction is executed in either a supervisor state or a lesser-privileged state. The TRIC instruction determines whether the run-time-instrumentation controls have changed. The run-time-instrumentation controls are set to an initial value using a privileged load run-time-instrumentation controls (LRIC) instruction. The TRIC instruction is fetched and executed. If the TRIC instruction is enabled, then it is determined if the initial value set by the run-time-instrumentation controls has been changed. If the initial value set by the run-time-instrumentation controls has been changed, then a condition code is set to a first value.
Public/Granted literature
- US20130246748A1 DETERMINING THE STATUS OF RUN-TIME-INSTRUMENTATION CONTROLS Public/Granted day:2013-09-19
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