[Gumstix-users] Bad Assembler Instructions

[Michael M. <mma...@bb...>]

All--

I'm attempting to port an application to the Gumstix for use on a verdex 
Gumstix with the buildroot environment.  I've followed the steps to 
create a working toolchain, and have used this toolchain to 
cross-compile some working test applications (nothing fancy, but basic 
programs to get a handle on the i686-Linux->XScale Linux compiling, code 
that is a little more technical than the standard "hello world").

When using the same toolchain to port my application, however, the 
assembler is throwing an error, as it is attempting to use commands 
that, having researched the XScale assembly language 
(http://www.intel.com/design/iio/swsup/11139.htm) do not exist.

The text of the errors is as follows:

{standard input}: Assembler messages:
{standard input}:26: Error: bad instruction `xadd r3,(r0)'
{standard input}:54: Error: bad instruction `xadd r3,(r0)'
{standard input}:80: Error: bad instruction `xchg r1,(r0)'
{standard input}:106: Error: bad instruction `xadd r1,(r0)'
{standard input}:133: Error: bad instruction `lock'
{standard input}:133: Error: bad instruction `xadd r3,(r0)'
{standard input}:160: Error: bad instruction `lock'
{standard input}:160: Error: bad instruction `xadd r3,(r0)'
{standard input}:186: Error: bad instruction `xchg r1,(r0)'
{standard input}:212: Error: bad instruction `lock'
{standard input}:212: Error: bad instruction `xadd r1,(r0)'

Any assistance in determining the next action to take would be greatly 
appreciated.

Environment information:

uname -a returns: Linux host.domain 2.6.18-53.el5 #1 SMP Mon Nov 12 
02:22:48 EST 2007 i686 i386 GNU/Linux

g++ -v returns:

Using built-in specs.
Target: arm-linux-uclibcgnueabi
Configured with:
/home/mmazzell/gumstix/gumstix-buildroot/toolchain_build_arm_nofpu/gcc-4.1.1/configure
--prefix=/home/mmazzell/gumstix/gumstix-buildroot/build_arm_nofpu/staging_dir
--build=i386-pc-linux-gnu --host=i386-pc-linux-gnu
--target=arm-linux-uclibcgnueabi --enable-languages=c,c++ --enable-shared
--disable-__cxa_atexit --enable-target-optspace --with-gnu-ld --disable-nls
--enable-threads --disable-multilib --with-float=soft --with-cpu=xscale
--with-arch=armv5te --with-tune=xscale --without-fp
Thread model: posix
gcc version 4.1.1


as -v returns:
GNU assembler version 2.17.50.0.6 (arm-linux-uclibcgnueabi) using BFD 
version
2.17.50.0.6 20061020

ld -v returns:
GNU ld version 2.17.50.0.6-5.el5 20061020



Thanks,
--michael mazzello