the breakpoint of gdb

[s88]

Hi all:

Could anyone tell me something about how the gdb to achieve the the
breakpoint function in different platform?
I heard the gdb's breakpoint implement on the X86 platform is by the
instruction patch. It sounds interesting!! I want to know more
details.
Any reference info, web page, books are welcome.


Thanks,

Dave.

-- 
System  on Chip Design  Lab.
Dept. of Computer Science and Information Engineering,
National Chung Cheng University
E-mail : s88.tw@acm.org