What role does gdb/remote.c play?

[yongyong.yang@ia.ac.cn]

Hey, everyone.
 
Recently I am trying to port gdb for a remote target. I use remote-m32r-sdi as start point.
when I debug it, I find the global variable current_target has the value specified in remote.c, 
furthermore I find the generated file init.c has both initialize_XXX() and _initialize_remote() , 
where XXX is the target I specified for my target.
 
So when I run command 'target remote localhost:[port]', it is remote_open() that handles the argument and etc.
 
Can someone explain what is wrong. Thank you.