V9BIAS64
if (mdinfo.ksb != 0x0 && mdinfo.ksb != V9BIAS64) {
prom_printf(fmt, "stack bias", mdinfo.ksb, 0, V9BIAS64);
rwp = sp + V9BIAS64;
#define IS_V9STACK(x) ((((uintptr_t)(x) + V9BIAS64) & \
#define STACK_BIAS V9BIAS64
uint64_t *rw = (uint64_t *)((uintptr_t)sp + V9BIAS64);
uint64_t *rw = (uint64_t *)((uintptr_t)sp + V9BIAS64);
sp += V9BIAS64;