search for: sig_sysreturn

One other note I forgot... sig_sysreturn (arch/x86/kernel/signal_32.c) has a magic fudge factor to fix up stack layout differences between llvm and gcc. If when you hit userspace you get signal handling errors, look at the frame addresses printed out and adjust the fudge factor to make the frame addresses match. (the code automatically...

For people who want to try hacking on the linux kernel with llvm, here is a head start: http://llvm.org/~alenhar2/k.tbz This is a 2.6.27.5 kernel with a .config file for qemu/kvm with virtio devices (I also think it will work with the default devices). The build process uses llvm-gcc -> opt -> llc so you can add your own (per-file) passes to the build process or debug specific passes.

Hi, I am trying to build the Linux kernel with LLVM. 'ARCH=um' appears to work, now I am trying to get 'ARCH=x86' to work. So far it seems there is something wrong with the boot vga code (it finds no video modes), the acpi code, and the serial console code. I am now trying to compile drivers/ with llvm-gcc and the rest with gcc-4.2 (I have a wrapper script), I am compiling to