System and method for program execution tracing within an integrated processor
摘要
A system and method for tracing program code within a processor having an embedded cache memory. The non-invasive tracing technique minimizes the need for trace information to be broadcast externally. The tracing technique monitors changes in instruction flow from the normal execution stream of the code. The tracing technique monitors the updating of processor branch target register contents in order to monitor branch target flow of the code. A FIFO and serial logic circuitry is utilized to minimize the number of chip pins required to broadcast the information from the chip. The tracing technique utilizes instruction and data breakpoint debug functions to signal an external trace tool that a trace event has occurred.
申请公布号
US5809293(A)
申请公布日期
1998.09.15
申请号
US19940283128
申请日期
1994.07.29
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
BRIDGES, JEFFREY TODD;COLLOPY, THOMAS K.;DIEFFENDERFER, JAMES N.;IRENE, THOMAS JOSEPH;LINZER, HARRY I.;SARTORIUS, THOMAS ANDREW