CUSTOMADDR
RELOC(CUSTOMADDR, vaddr_t) =
((volatile struct Custom *)CUSTOMADDR)->color[0] = 0x0a0; /* GREEN */
CUSTOMbase = CUSTOMADDR;
vaddr_t CUSTOMADDR, CUSTOMbase;
extern vaddr_t CUSTOMADDR, CUSTOMbase;
CUSTOMADDR = 0xdff000;
CUSTOMbase = CUSTOMADDR;