R_DX
regs->R_DX = vmf->vmf_dx;
(n), (r)->R_AX, (r)->R_BX, (r)->R_CX, (r)->R_DX, \
vmf->vmf_dx = regs->R_DX;
regs.R_DX = offset / adp->va_window_gran;
regs.R_DX = offset / adp->va_window_gran;
regs.R_DX = start;
regs.R_DX = start;
regs.R_DX = start;
regs.R_DX = start;
printf("bx:%d, cx:%d, dx:%d\n", regs.R_BX, regs.R_CX, regs.R_DX);
*lines = regs.R_DX;
*y = regs.R_DX;
regs.R_DX = y;