; ----------------------------------------------------------------------- ; ; Copyright 2005-2006 H. Peter Anvin - All Rights Reserved ; ; This program is free software; you can redistribute it and/or modify ; it under the terms of the GNU General Public License as published by ; the Free Software Foundation, Inc., 53 Temple Place Ste 330, ; Boston MA 02111-1307, USA; either version 2 of the License, or ; (at your option) any later version; incorporated herein by reference. ; ; ----------------------------------------------------------------------- ; ; abort.inc ; ; Code to terminate a kernel load ; section .text ; ; abort_check: let the user abort with or ; abort_check: call pollchar jz .ret1 pusha call getchar cmp al,27 ; je .kill cmp al,3 ; je .kill .ret2: popa .ret1: ret .kill: mov si,aborted_msg ; ... fall through ... ; ; abort_load: Called by various routines which wants to print a fatal ; error message and return to the command prompt. Since this ; may happen at just about any stage of the boot process, assume ; our state is messed up, and just reset the segment registers ; and the stack forcibly. ; ; SI = offset (in _text) of error message to print ; abort_load: RESET_STACK_AND_SEGS AX call cwritestr ; Expects SI -> error msg ; Return to the command prompt jmp enter_command