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Re: gdb/CYGWIN
- To: Earnie Boyd <earnie_boyd at yahoo dot com>
- Subject: Re: gdb/CYGWIN
- From: "Ed Bradford/Raleigh/IBM" <egb at us dot ibm dot com>
- Date: Tue, 17 Oct 2000 14:05:22 -0400
- Cc: cygwin at sources dot redhat dot com
Strange stuff. I think it has to do with stdio.
gdb -nw granular-gcc.exe
break main
run
(breaks at main)
disassemble main
0x40107c <main>:
0x40107d <main+1>:
... (more addresses, no instructions)
push %ebpmov %esp,%ebpsub $0x28,$espcall 0x401170 <__main>movl
$0s0,...
It prints a bunch of addresses, then it prints the assembly language.
Continuing, I hit stepi and it prints C language lines (compiled with -g).
It prints the lines multiple times
because there are probably multiple assembly language instructions on for
some C lines. It gets
to GetTickCount() and I stepi into it. Gdb -nw says
0x401300 in GetTickCount@0 ()
Then I type
disassemble GetTickCount
and it says
No symbol "GetTickCount" in current context.
I don't know what is going on here.
Ed
PS. On the assembly language print out issue. there is another
manifestation of a stdio issue. The
DC program waits until I exit before it prints anything. Somehow, it thinks
it's writing to a buffered stream and does not
emit stuff to the bash or cmd.exe console screen until exit.
Your Windows 2000 Arborist
T/L 589-4410; Outside: 1-919-993-4410
egb@us.ibm.com
Earnie Boyd <earnie_boyd@yahoo.com> on 10/17/2000 01:44:45 PM
To: Ed Bradford/Raleigh/IBM@IBMUS, cygwin@sources.redhat.com
cc:
Subject: Re: gdb/CYGWIN
--- Ed Bradford/Raleigh/IBM <egb@us.ibm.com> wrote:
> I recently tried to single step CYGWIN's GDB through a Microsoft DLL.
> Specifically, I wanted
> to see the assembly language instructions of GetTickCount() (which is
only
> 4 instructions long).
> When gdb got to the GetTickCount() call, it quit single stepping in
> assembly language and asked me
> to
> Select function name to disassemble
>
What happens if you try it with `gdb -nw'?
Cheers,
=====
Earnie Boyd
mailto:earnie_boyd@yahoo.com
--- <http://earniesystems.safeshopper.com> ---
--- Cygwin: POSIX on Windows <http://gw32.freeyellow.com/> ---
--- Minimalist GNU for Windows <http://www.mingw.org/> ---
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