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Member "syslinux-6.03/mbr/adjust.h" (6 Oct 2014, 1704 Bytes) of package /linux/misc/syslinux-6.03.tar.gz:


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    1 /* -*- asm -*- -----------------------------------------------------------
    2  *
    3  *   Copyright 2009-2014 Intel Corporation; author: H. Peter Anvin
    4  *
    5  *   Permission is hereby granted, free of charge, to any person
    6  *   obtaining a copy of this software and associated documentation
    7  *   files (the "Software"), to deal in the Software without
    8  *   restriction, including without limitation the rights to use,
    9  *   copy, modify, merge, publish, distribute, sublicense, and/or
   10  *   sell copies of the Software, and to permit persons to whom
   11  *   the Software is furnished to do so, subject to the following
   12  *   conditions:
   13  *
   14  *   The above copyright notice and this permission notice shall
   15  *   be included in all copies or substantial portions of the Software.
   16  *
   17  *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   18  *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
   19  *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   20  *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
   21  *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
   22  *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   23  *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   24  *   OTHER DEALINGS IN THE SOFTWARE.
   25  *
   26  * ----------------------------------------------------------------------- */
   27 
   28 /*
   29  * adjust.h
   30  *
   31  * Macros to adjust the drive number
   32  */
   33 
   34 #ifndef ADJUST_H
   35 #define ADJUST_H
   36 
   37 #ifdef CTRL_80
   38     .macro ADJUST_DRIVE
   39     pusha
   40     movb    $0x02, %ah
   41     int $0x16
   42     testb   $0x04, %al
   43     popa
   44     jz  1f
   45     movb    $0x80, %dl
   46 1:
   47     .endm
   48 #elif defined(FORCE_80)
   49     .macro ADJUST_DRIVE
   50     movb    $0x80, %dl
   51     .endm
   52 #else
   53     .macro ADJUST_DRIVE
   54     .endm
   55 #endif
   56 
   57 #endif /* ADJUST_H */