Thank you for all the help. I have made a lot of progress. I think there might be a bug lm3s811 device, but I will look into that and log a bug if I find it. As usual with these problems, it was not just one thing.
The TI make files for using gcc produced bad code (I hand check by looking at the assembly files). The FreeRTOS build was cause crashes due to other bugs I think the lm3s811 might have a bug (with the display) which was what I was focusing on. Thank you for everyone who responded. I think this bug can be marked closed. Oliver -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1065325 Title: qemu-system-arm hangs on SIGUSR1 on OS X 10.8.2 Status in QEMU: New Bug description: I built the latest version of QEMU commit b4ae3cfa57b8c1bdbbd7b7d420971e9171203ade Date: Mon Oct 1 12:34:37 2012 +1000 My system is: Darwin localhost 12.2.0 Darwin Kernel Version 12.2.0: Sat Aug 25 00:48:52 PDT 2012; root:xnu-2050.18.24~1/RELEASE_X86_64 x86_64 localhost:qemu oliverks$ gcc -v Using built-in specs. Target: i686-apple-darwin11 Configured with: /private/var/tmp/llvmgcc42/llvmgcc42-2336.11~28/src/configure --disable-checking --enable-werror --prefix=/Applications/Xcode.app/Contents/Developer/usr/llvm-gcc-4.2 --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-darwin11 --enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2336.11~28/dst-llvmCore/Developer/usr/local --program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11 --target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1 Thread model: posix gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00) Shortly after start up I freeze. I am running the command line ./arm-softmmu/qemu-system-arm -M lm3s811evb -kernel ../FreeRTOSV7.2.0/FreeRTOS/Demo/CORTEX_LM3S811_GCC/gcc/RTOSDemo.axf The hang appears to occur due to this signal being sent static void qemu_tcg_init_cpu_signals(void) { sigset_t set; struct sigaction sigact; memset(&sigact, 0, sizeof(sigact)); sigact.sa_handler = cpu_signal; sigaction(SIG_IPI, &sigact, NULL); // <-- Signal that hangs system sigemptyset(&set); sigaddset(&set, SIG_IPI); pthread_sigmask(SIG_UNBLOCK, &set, NULL); } Oliver To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1065325/+subscriptions