Subject: Re: MI debugger magic key sequence
To: Eduardo Horvath <email@example.com>
From: Jeff Smith <firstname.lastname@example.org>
Date: 09/20/2000 23:34:12
Eduardo Horvath wrote:
> Breaking into the debugger from the console is an interesting problem.
> Most serial drivers have code to check if they are the console if they
> receive a BREAK and check if they are the console. Others can have
> keyboards attached and have checks for specific key sequences.
This is a good thing to clean-up. I've wanted to look at customizing
it since I've added some stuff to the com driver that we use here (^A).
> This is a MD routine that needs to be defined for each port. It does
> whatever is necessary to enter the debugger, PROM, whatever.
How is this different from cpu_Debugger()?
> db_check_magic(dev_t, dev, int k);
What is the dev used for, or will this interface just always be
called for every serial port? Right now the serial drivers tend
to know which port, right?
> db_set_magic(char *magic);
I hadn't thought about this at all, seems like a reasonable thing
to be able to set it at runtime. It also allows things like the
mips ports to put this in the machine specific code at start-up
Do any of the ports use chorded sequences for a non-serial console?