cortex a9 ptm

PTM은 Program Trace Macrocell의 약자로 말그대로 프로그램을 추적하는 녀석이라

데이터만을 추적하는 기능은 제공하지 않는 듯.

 

CortexA9의 PTM과 같이 데이터 트레이스를 지원하지 않는 환경에서 ITM은 제한적으로나마 데이터 트레이스를 해볼 수 있는 방안을 제공한다

[링크 : https://www.epnc.co.kr/news/articleView.html?idxno=45715]

 

PTM interface The Cortex-A9 processor optionally implements a Program Trace Macrocell (PTM) interface, that is compliant with the Program Flow Trace (PFT) instruction-only architecture protocol. Waypoints, changes in the program flow or events such as changes in context ID, are output to enable the trace to be correlated with the code image.

[링크 : https://developer.arm.com/documentation/100511/0401/functional-description/about-the-functions/ptm-interface]