mips64 elf64 problems

[Paul Mundt <pmundt at mvista dot com>]

I was in the process of testing out kgdb with a mips64 target (using gdb 5.1),
and ran into a rather peculiar problem. I have two images.. the vmlinux.64 is
the one that is being booted on the target:

vmlinux:    ELF 32-bit MSB executable, mips-4 MIPS R3000_BE, version 1,
statically linked, not stripped
vmlinux.64: ELF 64-bit MSB executable, mips-4 MIPS R3000_BE, version 1,
statically linked, not stripped

Upon trying to load these with gdb, the elf32 works just fine.. whereas the
elf64 complains about not being able to read ECOFF debugging information:

lethal@freya:~$ mips64-linux-gdb vmlinux
GNU gdb 5.1
Copyright 2001 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or 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.
This GDB was configured as "--host=i686-pc-linux-gnu --target=mips64-linux"...
(gdb)

lethal@freya:~$ mips64-linux-gdb vmlinux.64
GNU gdb 5.1
Copyright 2001 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or 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.
This GDB was configured as "--host=i686-pc-linux-gnu
--target=mips64-linux"...Error reading ECOFF debugging information: File
truncated

(gdb)

The kernels were both compiled with CONFIG_REMOTE_DEBUG turned on, so they
were both compiled with -g.

I've tried this with a --target of mips64-linux as well as mips64-linux-elf,
and the same thing happens both times.

Anyone have any insight on this?

Regards,

-- 
Paul Mundt <pmundt@mvista.com>
MontaVista Software, Inc.

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