Move variables from assembler to C code.

Define macro VAR16FIXED for declaring a variable at a fixed location.
Introduce new file src/misc.c, and move non int15 calls from system.c
    to it.
Implement all fixed location variables in C code.
Move IDT/GDT defs to misc.c.  Remove unused gdt entry 1.
16 files changed
tree: c4cfb8b1e44679ac41abe68e25071a549a41c329
  1. src/
  2. tools/
  3. .gitignore
  4. COPYING
  5. COPYING.LESSER
  6. Makefile
  7. README
  8. TODO