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cross debugging r3912 cpu with gdb

To: linux-mips@linux-mips.org
Subject: cross debugging r3912 cpu with gdb
From: "Mark and Janice Juszczec" <juszczec@hotmail.com>
Date: Sun, 07 Dec 2003 22:28:33 +0000
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org

Hi folks

I'm trying to track down a SIGSEGV generated by kaffe on the Helio pda. It uses a Phillips R3912 cpu.

The gdb 6.0 docs say configure as follows: configure --target=mips-idt-ecoff. I did and mips shows up as an available target.

Unfortunately, when I try to connect to the pda via a USB serial connection, I get:

(gdb) set debug remote 2
(gdb) target mips /dev/ttyUSB0
Expected "<IDT>", got "": FAIL
Expected "<IDT>", got "": FAIL
Expected "<IDT>", got "": FAIL
Failed to initialize.
Ending remote MIPS debugging.
You can't do that without a process to debug

Further research shows there is supposed to be a target named r3900. It doesn't show up under my available targets and

(gdb) target r3900 /dev/ttyUSB0

gives and error saying there is no target named r3900.

Can anyone out there give me advice about gdb and mips cross debugging?

Mark

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