Re: regarding kgdb in ppc

["Anumolu Sudheer" <urwithsudheer@gmail.com>]

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Hi All,
As i was not able to do  kgdb with  ppc as target, i decided to try first
with two x86 PCs. On the target system  after uncompressing the kernel i
could not see any statement like  "Waiting for connection from remote gdb".
I think this is to be done by gdbserver on the target.
I compiled the gdbserver but don't know how to use it here along with the
target kernel. Can anyone give some tips how to do it or if am missing
something .
I followed the docs - kgdb_docu_full-2.4.pdf and kgdbquickstart-2.4.pdf
Host:  x86,  RHEL-2.6.9-34.EL
Target Linux- 2.6.15.5 <http://2.6.16.2/>
The kgdb version : linux-2.6.15.5-kgdb-2.4

Please let me know if any other details required.


Thanks
Sudheer

On 11/28/06, Anumolu Sudheer <urwithsudheer@gmail.com> wrote:
>
> Hello All
> I am in process of learning kgdb and facing some problem with gdbserver. I
> am not able to "configure and make"   the gdbserver .  Sorry fot the long
> mail.
>
> Did anyone tried to compile the KGDB with this powerpc-eabi ?? Please help me in solving this.
>
> Setup datails are below..
> Host:  x86,  RHEL-2.6.9-34.EL
> Target Linux- 2.6.16.2
> Target Processor: AMCC440SPe
> The kgdb version : linux-2.6.15.5-kgdb-2.4
> GDB  version gdb-6.4-kgdb-2.4.tar.bz2
> CrossCompiler - powerpc-eabi
>
> I applied the patch to the kernel and cross compiled it.(modified to solve
> the compilation errors  as is not supported readymade).
>
> I used the steps given in "http://www.kegel.com/linux/gdbserver.txt " to
> build the gdb.
>
> I compiled the gdb for host with  following commands
>
> #ls
> gdb-6.4  gdb-6.4-kgdb-2.4.tar.bz2
>
> #mkdir ppc440
> #cd ppc440
> #/bin/sh ../gdb-6.4/configure --target=powerpc-eabi --with-solib-absolute-prefix=/opt/ppc440
> #make
> #cd ..
>
> For gdbserver, if i give the "--target=powerpc-eabi" to "configure" script,  it says the target
>
> is not supported by gdbserver and if i give "--target=powerpc-linux", it doesnt show any error
> but its output doesn't look fine .  But when i do make. i get many errors saying many files
> are not found.  (Adding few required header files didnt help.)
>
>
> I cross compiled the gdbserver with following commands:
>
> [root@localhost gdb]# mkdir cross-ppc440
> [root@localhost gdb]# ls
> cross-ppc440  gdb-6.4  gdb-6.4-kgdb-2.4.tar.bz2  ppc440
> [root@localhost
>
>
>  gdb]# cd cross-ppc440/
> [root@localhost cross-ppc440]#
> [root@localhost cross-ppc440]# export CC=/usr/local/powerpc-eabi/bin/
> [root@localhost cross-ppc440]# export CFLAGS="-mcpu=405 -D__PPC405__ -msim"
>
>
>
> [root@localhost cross-ppc440]# export ac_cv_func_mmap_fixed_mapped=yes
>
> [root@localhost cross-ppc440]# /bin/sh ../gdb-6.4/gdb/gdbserver/configure --target=powerpc-eabi --host=i386
>
> configure: WARNING: If you wanted to set the --build type, don't use
> --host.
>     If a cross compiler is detected then cross compile mode will be used.
> checking for i386-gcc... /usr/local/powerpc-eabi/bin /powerpc-eabi-gcc
> checking for C compiler default output file name... a.out
> checking whether the C compiler works... yes
> checking whether we are cross compiling... yes
> checking for suffix of executables...
> checking for suffix of object files... o
> checking whether we are using the GNU C compiler... yes
> checking whether /usr/local/powerpc-eabi/bin/powerpc-eabi-gcc accepts
> -g... yes
> checking for /usr/local/powerpc-eabi/bin/powerpc-eabi-gcc option to accept
> ANSI C... none needed
> checking build system type... i686-pc-linux-gnulibc1
> checking host system type... i386-pc-none
> checking target system type... powerpc-unknown-eabi
> checking for a BSD-compatible install... /usr/bin/install -c
> checking how to run the C preprocessor...
> /usr/local/powerpc-eabi/bin/powerpc-eabi-gcc -E
> checking for egrep... grep -E
> checking for ANSI C header files... yes
> checking for sys/types.h... yes
> checking for sys/stat.h... yes
> checking for stdlib.h... yes
> checking for string.h... yes
> checking for memory.h... no
> checking for strings.h... no
> checking for inttypes.h... no
> checking for stdint.h... no
> checking for unistd.h... yes
> checking sgtty.h usability... no
> checking sgtty.h presence... no
> checking for sgtty.h... no
> checking termio.h usability... no
> checking termio.h presence... no
> checking for termio.h... no
> checking termios.h usability... no
> checking termios.h presence... no
> checking for termios.h... no
> checking sys/reg.h usability... no
> checking sys/reg.h presence... no
> checking for sys/reg.h... no
> checking for string.h... (cached) yes
> checking proc_service.h usability... no
> checking proc_service.h presence... no
> checking for proc_service.h... no
> checking sys/procfs.h usability... no
> checking sys/procfs.h presence... no
> checking for sys/procfs.h... no
> checking thread_db.h usability... no
> checking thread_db.h presence... no
> checking for thread_db.h... no
> checking linux/elf.h usability... no
> checking linux/elf.h presence... no
> checking for linux/elf.h... no
> checking for stdlib.h... (cached) yes
> checking for unistd.h... (cached) yes
> checking whether strerror is declared... yes
> checking for socklen_t... no
> Error: target not supported by gdbserver.
> [root@localhost cross-ppc440]#
> [root@localhost cross-ppc440]# /bin/sh ../gdb-6.4/gdb/gdbserver/configure
> --target=powerpc-linux --host=i386
> configure: WARNING: If you wanted to set the --build type, don't use
> --host.
>     If a cross compiler is detected then cross compile mode will be used.
> checking for i386-gcc... /usr/local/powerpc-eabi/bin/powerpc-eabi-gcc
> checking for C compiler default output file name... a.out
> checking whether the C compiler works... yes
> checking whether we are cross compiling... yes
> checking for suffix of executables...
> checking for suffix of object files... o
> checking whether we are using the GNU C compiler... yes
> checking whether /usr/local/powerpc-eabi/bin/powerpc-eabi-gcc accepts
> -g... yes
> checking for /usr/local/powerpc-eabi/bin/powerpc-eabi-gcc option to accept
> ANSI C... none needed
> checking build system type... i686-pc-linux-gnulibc1
> checking host system type... i386-pc-none
> checking target system type... powerpc-unknown-linux-gnu
> checking for a BSD-compatible install... /usr/bin/install -c
> checking how to run the C preprocessor...
> /usr/local/powerpc-eabi/bin/powerpc-eabi-gcc -E
> checking for egrep... grep -E
> checking for ANSI C header files... yes
> checking for sys/types.h... yes
> checking for sys/stat.h... yes
> checking for stdlib.h... yes
> checking for string.h... yes
> checking for memory.h... no
> checking for strings.h... no
> checking for inttypes.h... no
> checking for stdint.h... no
> checking for unistd.h... yes
> checking sgtty.h usability... no
> checking sgtty.h presence... no
> checking for sgtty.h... no
> checking termio.h usability... no
> checking termio.h presence... no
> checking for termio.h... no
> checking termios.h usability... no
> checking termios.h presence... no
> checking for termios.h... no
> checking sys/reg.h usability... no
> checking sys/reg.h presence... no
> checking for sys/reg.h... no
> checking for string.h... (cached) yes
> checking proc_service.h usability... no
> checking proc_service.h presence... no
> checking for proc_service.h... no
> checking sys/procfs.h usability... no
> checking sys/procfs.h presence... no
> checking for sys/procfs.h... no
> checking thread_db.h usability... no
> checking thread_db.h presence... no
> checking for thread_db.h... no
> checking linux/elf.h usability... no
> checking linux/elf.h presence... no
> checking for linux/elf.h... no
> checking for stdlib.h... (cached) yes
> checking for unistd.h... (cached) yes
> checking whether strerror is declared... yes
> checking for socklen_t... no
> checking for PTRACE_GETREGS... no
> checking for PTRACE_GETFPXREGS... no
> checking for libthread_db... no
> configure: WARNING: Could not find libthread_db.
> configure: WARNING: Disabling thread support in gdbserver.
> configure: creating ./config.status
> config.status: creating Makefile
> config.status: creating config.h
> config.status: executing default commands
> [root@localhost cross-ppc440]# ls
> config.h  config.log  config.status  Makefile
> [root@localhost cross-ppc440]#
> [root@localhost cross-ppc440]#
>
> Please let me know if any details required.
>
> Thanks in advance
> Sudheer
>

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