Re: usermode gdb / remote gdb

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Jun,


Having seen your recent posting regarding gdb, I am
wondering if you could help me. I downloaded gdb from
your web site, and tried compiling gdb-4.17 for a
mipsel target.

I got gdb to compile OK, but I couldn't get gdbserver
to compile. My problems seem similar to the problems
Michael Shmulevich had.

I couldn't find any documentation on what order to
apply patches, or which patches to apply, so I patched
with the following in the following order :

gdb-4.17-mips.patch
gdb-4.17-mips-gdbserver.patch
gdb-4.17-xref.patch

I configured gdb with :
./configure -target=mips-linux-elf

It configured OK and then built OK.

Then I configured gdbserver with :

../../configure --target=mipsel-linux-elf 

And then tried compiling.This compiled so far and then
gave numerous undefined references to functions such
as create_inferior,mywait, myresume etc which are
defined in low-linux.c.

So following the previous thread on gdbserver from
Micheal Shmulevich, I decided to try :

../../configure --host=mipsel-linux
--target=mipsel-linux-elf This gave the following
output :
gdbserver/configure.in:host is
mipsel-unknown-linux-gnu,target is
gdbserver/configure.in:host_cpu is mipsel, target cpu
is mipsel
Linked "xm.h" to "./../config/mips/xm-linux.h".
Linked "tm.h" to "./../config/mips-tm-embedl.h".
Linked "nm.h" to "./../config/nm-empty.h".
Created "Makefile"
/usr/local/src/gdb-5.0/gdb-4.17/gdb/gdbserver using
"../config/mips/mipsel-linux.mh" and
"../config/mips/embedl.mt"

I then build with : make CC=mipsel-linux-gcc.

The first file it tries to compile is low-linux.c and
immediately errors with :
low-linux.c:In function 'fetch_register':
low-linux.c:248: 'PT_READ_U' undeclared (first use in
function)

Looking at the source I believe PT_READ_U is undefined
because the link from nm.h to nm-linux.h is not made,
Michael made the same observation.

>From what I have written can you tell me where I am
going wrong ?

Any help would be greatly appreciated

Michael: If you have any tips on how to get gdbserver
working they will be warmly welcome.

TIA

Wayne


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