MODIFYING RUN-TIME-INSTRUMENTATION CONTROLS FROM A LESSER-PRIVILEGED STATE
摘要
Embodiments of the invention relate to modifying run-time-instrumentation controls (MRIC) from a lesser-privileged state. The MRIC instruction is fetched. The MRIC instruction includes the address of a run-time-instrumentation control block (RICCB). The RICCB is fetched based on the address included in the MRIC instruction. The RICCB includes values for modifying a subset of the processor's run-time-instrumentation controls. The subset of run-time-instrumentation controls includes a runtime instrumentation program buffer current address (RCA) of a runtime instrumentation program buffer (RIB) location. The RIB holds run-time-instrumentation information of the events recognized by the processor during program execution. The values of the RICCB are loaded into the run-time-instrumentation controls. Event information is provided to the RIB based on the values that were loaded in the run-time-instrumentation control.
申请公布号
EP2807562(A4)
申请公布日期
2015.01.14
申请号
EP20130760606
申请日期
2013.03.01
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
FARRELL, MARK S.;GAINEY JR., CHARLES W.;SHUM, CHUNG-LUNG KEVIN;SLEGEL, TIMOTHY J.