ESP32 SPR
来自Jack's Lab
1 Overview
Speical Registers of ESP32 (Xtensa) hold the majority of the state added to the processor.
2 R/W SPR
rsr.* a2 wsr.* a2 xsr.* a2 <--- exchanges the values in a General Register (GPR) and a Special Register (SPR)
For example:
rsr.prid a2