On 6 March 2011 15:29, Michal Suchanek <hramr...@centrum.cz> wrote: > I would like to see the ability to run x86 on arm. > > I think there were some attempts to implement this and an outdated? > support for arm on x86 exists but x86 cannot be emulated on arm so > far.
ARM on x86 isn't outdated; it has bugs (what code doesn't?) but we're working on squashing those; I definitely care about A-profile ARM targets, so if you have specific bugs please report them and I will investigate. x86 on ARM should in theory work, because all the major pieces are there (ie there is an x86 TCG frontend and an ARM backend), and I believe Aurelien fixed a number of bugs in it before the 0.14 release. I just tried the linux-user mode and this seems to work: root@localhost:~/qemu/qemu/qemu# uname -a Linux localhost.localdomain 2.6.35-1006-linaro-omap #12-Ubuntu Tue Sep 21 20:09:17 UTC 2010 armv7l GNU/Linux root@localhost:~/qemu/qemu/qemu# file /tmp/hello /tmp/hello: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.6.15, not stripped root@localhost:~/qemu/qemu/qemu# ./i386-linux-user/qemu-i386 /tmp/hello Hello, x86 on ARM world! I haven't tested the system-emulation mode but I don't think there is anything known to be missing that would make it not work. So I think this is also in the "report bugs for things which don't work" phase. One caveat: I had to configure with '--extra-cflags=-marm', otherwise qemu segfaulted; I guess we aren't properly coping with the C code being compiled for Thumb... -- PMM
