arm b 指令

B,　　Branch,

BL, 　　 Branch with Link,

BX, 　　 Branch and exchange instruction set,

BLX, 　　Branch with Link and exchange instruction set,

BXJ,　　Branch and change to Jazelle state.

jazelle 不知道是什么意思：

"jazz-ell". an adjective.
calling someone a jazelle means that you are literally calling someone a cute asian/australian girl. it can also be used as insult, as in referring to mob someone.

example one;
gangster: don't you come near me or i'll jazelle mob ya bro
innocent girl: don't jazelle me please

example two;
boy: you're a fine jazelle
girl: *blushes* 与 jazelle 技术有关吗 ？

 

LR (R14, the link register). lr=link register