Gentoo, QEMU, Raspberry pi

Hello, I have succefull run debian raspberry pi under qemu (qemu-kvm is bugged for arm under gentoo).
Then I try do like under my x86, mount -t proc none proc, chroot /mnt/gentoo /bin/bash, ... -> illegal instruction.
Then I try with boot directly from the gentoo's part -> lot of illegal instruction, I have used like say on the web: stage3-armv6j_hardfp-20120603.tar.bz2
What's appends? Qemu not emulate hardfp? Or something like that's?

Thanks to your help, I prefer test and prepare my OS before have my raspberry pi (2 weeks renaming).