Date: Thu, 7 Aug 1997 21:01:57 -0400 From: Randall Hopper <rhh@ct.picker.com> To: Sean Eric Fagan <sef@Kithrup.COM> Cc: emulation@FreeBSD.ORG Subject: Re: Fun with DOSCMD (was Re: modifying boot mgrs FROM FREEBSD) Message-ID: <19970807210157.52853@ct.picker.com> In-Reply-To: <199708080028.RAA17158@kithrup.com>; from Sean Eric Fagan on Thu, Aug 07, 1997 at 05:28:47PM -0700 References: <199708080028.RAA17158@kithrup.com>
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Sean Eric Fagan:
|> |> I also need to figure out how to run doscmd in gdb. I rebuild
|
|After you jump through the (rather annoying) jump into doscmd.kernel, you
|can do:
|
| symbol-file doscmd.kernel
|
|That will reload the symbol table. I've used it before.
Thanks for the reply. I'd tried all sorts of variations with
step/jump/symbol-file (loading before, loading after) and so far no luck.
Could you point out what I'm doing wrong here? This gets the DOSCMD window
up, and I can ^C it, but then even after loading doscmd.kernel, GDB is lost.
Randall
> gdb doscmd
GDB is free software and you are welcome to distribute copies of it
under certain conditions; type "show copying" to see the conditions.
There is absolutely no warranty for GDB; type "show warranty" for details.
GDB 4.16 (i386-unknown-freebsd),
Copyright 1996 Free Software Foundation, Inc...
(gdb) break 94
Breakpoint 1 at 0x2760: file doscmd_loader.c, line 94.
(gdb) run -x
Starting program: /share/home/rhh/DOSCMD/doscmd-970320/freebsd/doscmd -x
Breakpoint 1, main (argc=2, argv=0xefbfd384, environ=0xefbfd390)
at doscmd_loader.c:94
94 (*entry_point)(argc, argv, environ);
(gdb) delete 1
(gdb) handle SIGBUS pass nostop noprint
Signal Stop Print Pass to program Description
SIGBUS No No Yes Bus error
(gdb) step
^C
Program received signal SIGINT, Interrupt.
0x18cc27 in ?? ()
(gdb) symbol-file doscmd.kernel
Load new symbol table from "doscmd.kernel"? (y or n) y
Reading symbols from doscmd.kernel...done.
(gdb) where
reading register eip (#8): No such process.
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