公开(公告)号：US20170249146A1

公开(公告)日：2017-08-31

申请号：US15057111

申请日：2016-02-29

Applicant: QUALCOMM Incorporated

Inventor： Suresh Kumar VENKUMAHANTI ,  Venkatarami MORA

IPC: G06F9/30

CPC classification number: G06F11/3636 ,  G06F11/36

Abstract: Systems and methods pertain to reducing bandwidth of instruction tracing for a processor, using an Embedded Trace Macrocell (ETM). Packets, which include trace information for load/store instructions executed in the processor, are generated. A P-Header comprising commit information for load/store instructions of up to a maximum number of two or more packets is generated. The P-Header is generated for the maximum number of two or more packets if none of the load/store instructions in the maximum number of two or more packets were killed. If a load/store instruction in a packet was killed, a P-Header comprising commit information for the packet comprising the load/store instruction which was killed is generated and placed in an instruction trace immediately after that packet, even if the maximum number is not reached.

公开(公告)号：US20250156187A1

公开(公告)日：2025-05-15

申请号：US18510088

申请日：2023-11-15

Applicant: QUALCOMM Incorporated

Inventor： Richard SENIOR ,  Venkatarami MORA ,  Suresh Kumar VENKUMAHANTI ,  Avinash GADDE ,  Christopher AHN ,  Sangchol LEE ,  Sanjana RAJEEV ,  Dhairya AGRAWAL

IPC: G06F9/38 ,  G06F9/30

Abstract: Aspects of the disclosure are directed to reduction of data transfer overhead. In accordance with one aspect, increment a function call counter for an executed function call; decrement the function call counter for an executed return from function call; infer the indirect branch address based on a function call counter value and when a cumulative count of received executed atoms indicates a return from function call has been executed; oversaturate the function call counter at a maximum counter value if the function call counter contains the maximum counter value and a subsequent function call is executed; and undersaturate the function call counter at a minimum counter value if the function call counter contains the minimum counter value and a subsequent return from function call is executed.