How GDB knows a breakpoint is hit?

[Andreas Schwab]

kceiwH <kceiwh@gmail.com> writes:

> I wonder how GDB knows it should stop the inferior when a breakpoint is
> hit. I try to read the code but only to find how GDB creates a
> breakpoint. I thought GDB might change some instructions of inferior  so
> that when the inferior executes the modified instructions, GDB  should
> know. But what the function "create_breakpoint" does is to add  a
> breakpoint to the list "breakpoint_chain".

Breakpoints are only inserted immediately before the inferior is
resumed, see insert_breakpoints.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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