问题描述
Last Branch Record 是指寄存器对 (MSR) 的集合，这些寄存器对存储与最近执行的分支相关的源地址和目标地址.它们受英特尔酷睿 2、英特尔至强和英特尔凌动处理器系列的支持.http://css.csail.mit.edu/6.858/2012/readings/ia32/ia32-3b.pdf 文档有更多信息，如果您有兴趣.
Last Branch Record refers to a collection of register pairs (MSRs) that store the source and destination addresses related to recently executed branches. They are supported across Intel Core 2, Intel Xeon and Intel Atom processor families. http://css.csail.mit.edu/6.858/2012/readings/ia32/ia32-3b.pdf document has more information in case you are interested.
类似 LBR 的功能是否仅在英特尔微处理器中可用，或者在 ARM 等中存在类似的功能吗?
Is LBR-like feature available only in Intel microprocessors OR something similar exists in ARM etc. ?
推荐答案
总而言之，正如 Carl 所说，ARM 在某些处理器上也具有程序跟踪功能.此站点有关于此功能的有趣详细信息:http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.set.coresight/index.html
To sum up, as Carl mentioned, ARM also has program tracing functionality on some processors. This site has interesting details about this feature : http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.set.coresight/index.html
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