Installation instructions for gdb & gdbserver on ARM7TDMI

Hi everybody!It took me quite some time to figure out how to get gdb and gdbservercombiled for an ARM7TDMI based uClinux target. Below, you will finda detailed installation instruction. BTW.: Thanks to Ho Lee forprovidingusefull hints!I have briefly tested gdb and gdbserver with a simple target programand it seems to work fine (breakpoint setting, single stepping etc.),but as always YMMV :-) Feedback appreciated!best regardsBernhardarm-elf-gdb installation========================This document describes how to compile gdb and gdbserverfor ARM7TDMI uClinux targets. This desciption was testedon RedHat 6.2 with an Atmel AT75C220-DK but should workwith other ARM7TDMI target as well - feedback appreciated!It is assumed that you already have an arm-elf cross-compilationtoolchain installed and a recent uClinux-distribution (20010701)running on your target.Installation procedure----------------------At the very beginning, you need to define where the kernelsources are located, i.e.:  export KERNEL_SOURCE=$HOME/uClinux-dist/linux-2.4.xThen, create some working directories:  export GDB_DEVEL_PREFIX=$HOME/arm-elf-gdb  export DEVEL_PREFIX=$GDB_DEVEL_PREFIX/usr  export PKGDIR=$GDB_DEVEL_PREFIX/packages  export SRCDIR=$GDB_DEVEL_PREFIX/src  install -d $PKGDIR  install -d $SRCDIRDownload the following files to $PKGDIR: http://www.uclinux.org/~bkuhn/Toolchain/20020920/uClibc-0.9.15-Config.armnommu  http://www.us.kernel.org/pub/linux/libs/uclibc/uClibc-0.9.15.tar.bz2  ftp://sources.redhat.com/pub/gdb/releases/gdb-5.2.1.tar.bz2 http://www.uclinux.org/~bkuhn/Toolchain/20020920/patch-gdb-5.2.1-arm7tdmi-20020920 http://www.uclinux.org/~bkuhn/Toolchain/20020920/patch-uClinux-2.4.17-ptraceNow, you need to patch the kernel sources:  cd $KERNEL_SOURCE/arch/armnommu/kernel  patch ptrace.c < $PKGDIR/patch-uClinux-2.4.17-ptraceRecompile the kernel and deploy it to your target.Then, build uClibc with libm disabled:  cd $SRCDIR  tar -xIf $PKGDIR/uClibc-0.9.15.tar.bz2  cd uClibc-0.9.15  cp $PKGDIR/uClibc-0.9.15-Config.armnommu Config  make  make installBuild gdb for arm-elf:  cd $SRCDIR  tar -xIf $PKGDIR/gdb-5.2.1.tar.bz2  cd gdb-5.2.1  patch -p1 < $PKGDIR/patch-gdb-5.2.1-arm7tdmi-20020920  ./configure --target=arm-elf --host=i386-linux --build=i386-linux  makeNow, strip gdb/gdb and copy it to a convenient location, i.e. to/usr/local/bin/arm-elf-gdbBuild gdbserver for arm-elf:  cd $SRCDIR/gdb-5.2.1/gdb/gdbserver  chmod u+x configure  ./configure --target=arm-linux --host=arm-linux --build=i386-linux  mv Makefile Makefile.orig  cat Makefile.orig | sed -e "s/CC = gcc/# CC = gcc/" | sed -e "s/CFLAGS= -g -O2/# CFLAGS = -g -O2/" > Makefile  mv config.h config.h.orig  cat config.h.orig | sed -e "s/#define HAVE_SYS_REG_H 1////* #undefHAVE_SYS_REG_H 1 ///*/" > config.h  CC=arm-elf-gcc CFLAGS="-g -Os -nostdinc -I$DEVEL_PREFIX/include-I/opt/uClinux/toolchain-arm-elf/lib/gcc-lib/arm-elf/2.95.3/include-D__linux__ -D__uClinux__ -D__linux__ -D__ELF__ -DNO_MM"XM_CLIBS="-nostdlib -L$DEVEL_PREFIX/lib -nostartfiles$DEVEL_PREFIX/lib/crt0.o $DEVEL_PREFIX/lib/crti.o$DEVEL_PREFIX/lib/crtn.o -lc -lgcc  -Wl,-elf2flt" makeAdmitidly, this line locks ugly but works fine :-)Finaly, deploy the gdbserver binary to your target filesystem.Precomopiled binaries---------------------If you are not successfull with compiling gdb and gdbserveryourself, you may download some precompiled binaries:  http://www.uclinux.org/~bkuhn/Toolchain/20020920/arm-elf-gdb.bz2  http://www.uclinux.org/~bkuhn/Toolchain/20020920/gdbserver.bz2Bernhard Kuhn, Senior Software Engineer, Embedix Inc.Fri Sep 20 16:42:41 CEST 2002-- Bernhard Kuhn, Senior Software Engineer, Lineo Inc. (Where Open MeetsSmart)This message resent by the uclinux-dev at uclinux.org list server http://www.uClinux.org/