Really Hard /prog/ Challenge

Write a C compiler. It doesn't have to follow any rules/syntax/standards except to compile "hello world" and fibs.

Just wrote this one:
http://pastebin.com/z8eW9ZZP

- Reads from stdin, and writes Intel-style 80386 assembler to a.s
- No type checking. No pointer support
- Only 32bit signed int is available
- Limited program control(only if, for, and while available)

Compiles this:
http://pastebin.com/nnFC7fae
To this:
http://pastebin.com/BcQfbQPj