对ARm各个子系统都有一个简单的描述,很适合初学者。
This book provides a single guide for programmers who want to use the Cortex-A series
processors that implement the ARMv8 architecture. The guide brings together information from
a wide variety of sources that is useful to both ARM assembly language and C programmers. It
is meant to complement rather than replace other ARM documentation available for ARMv8
processors. The other documents for specific information includes the ARM Technical
Reference Manuals (TRMs) for the processors themselves, documentation for individual
devices or boards or, most importantly, the ARM Architecture Reference Manual - ARMv8, for
ARMv8-A architecture profile - the ARM ARM.