GCC on AMD64?

[Andrew Haley]

nick@os-soft.com writes:
 > I have run into slight problems using GCC to develop operating systems code
 > for an AMD64 environment.  The problem results from not having the
 > appropriate code model for the architecture.  I am attempting to use more
 > than the first or last two gigs of address space.

This is fine: gcj supports AMD64 with a flat 64-bit model.

 > This of course, does not work.

It does.  Did you build the compiler with the approppriate options?
This should be "-target x86_64".

Andrew.