com32/include/syslinux/bootrm.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2007-2008 H. Peter Anvin - All Rights Reserved
   4  *   Copyright 2009 Intel Corporation; author: H. Peter Anvin
   5  *
   6  *   Permission is hereby granted, free of charge, to any person
   7  *   obtaining a copy of this software and associated documentation
   8  *   files (the "Software"), to deal in the Software without
   9  *   restriction, including without limitation the rights to use,
  10  *   copy, modify, merge, publish, distribute, sublicense, and/or
  11  *   sell copies of the Software, and to permit persons to whom
  12  *   the Software is furnished to do so, subject to the following
  13  *   conditions:
  14  *
  15  *   The above copyright notice and this permission notice shall
  16  *   be included in all copies or substantial portions of the Software.
  17  *
  18  *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  20  *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  21  *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  22  *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  23  *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  24  *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  25  *   OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  * ----------------------------------------------------------------------- */
  28
  29 /*
  30  * syslinux/bootrm.h
  31  *
  32  * Data structures for shuffle and boot to protected mode
  33  */
  34
  35 #ifndef _SYSLINUX_BOOTRM_H
  36 #define _SYSLINUX_BOOTRM_H
  37
  38 #include <stdint.h>
  39 #include <stdbool.h>
  40 #include <com32.h>
  41 #include <syslinux/movebits.h>
  42
  43 /* This register set is used by the shuffle and boot interface.  It is
  44    a completely different structure from what the __intcall() and
  45    __farcall() interfaces use! */
  46 struct syslinux_rm_regs {
  47     uint16_t es;                /* Offset  0 */
  48     uint16_t _unused_cs;        /* Offset  2 */
  49     uint16_t ss;                /* Offset  4 */
  50     uint16_t ds;                /* Offset  6 */
  51     uint16_t fs;                /* Offset  8 */
  52     uint16_t gs;                /* Offset 10 */
  53
  54     reg32_t eax;                /* Offset 12 */
  55     reg32_t ecx;                /* Offset 16 */
  56     reg32_t edx;                /* Offset 20 */
  57     reg32_t ebx;                /* Offset 24 */
  58     reg32_t esp;                /* Offset 28 */
  59     reg32_t ebp;                /* Offset 32 */
  60     reg32_t esi;                /* Offset 36 */
  61     reg32_t edi;                /* Offset 40 */
  62
  63     uint16_t ip;                /* Offset 44 */
  64     uint16_t cs;                /* Offset 46 */
  65
  66     bool sti;                   /* Offset 48 */
  67 };
  68
  69 int syslinux_shuffle_boot_rm(struct syslinux_movelist *fraglist,
  70                              struct syslinux_memmap *memmap,
  71                              uint16_t bootflags, struct syslinux_rm_regs *regs);
  72
  73 #endif /* _SYSLINUX_BOOTRM_H */