arch/all-pc/boot/grub2-aros/include/grub/i386/pc/int.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2009  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef GRUB_INTERRUPT_MACHINE_HEADER
  20 #define GRUB_INTERRUPT_MACHINE_HEADER   1
  21
  22 #include <grub/symbol.h>
  23 #include <grub/types.h>
  24
  25 struct grub_bios_int_registers
  26 {
  27   grub_uint32_t eax;
  28   grub_uint16_t es;
  29   grub_uint16_t ds;
  30   grub_uint16_t flags;
  31   grub_uint16_t dummy;
  32   grub_uint32_t ebx;
  33   grub_uint32_t ecx;
  34   grub_uint32_t edi;
  35   grub_uint32_t esi;
  36   grub_uint32_t edx;
  37 };
  38
  39 #define  GRUB_CPU_INT_FLAGS_CARRY     0x1
  40 #define  GRUB_CPU_INT_FLAGS_PARITY    0x4
  41 #define  GRUB_CPU_INT_FLAGS_ADJUST    0x10
  42 #define  GRUB_CPU_INT_FLAGS_ZERO      0x40
  43 #define  GRUB_CPU_INT_FLAGS_SIGN      0x80
  44 #define  GRUB_CPU_INT_FLAGS_TRAP      0x100
  45 #define  GRUB_CPU_INT_FLAGS_INTERRUPT 0x200
  46 #define  GRUB_CPU_INT_FLAGS_DIRECTION 0x400
  47 #define  GRUB_CPU_INT_FLAGS_OVERFLOW  0x800
  48 #ifdef GRUB_MACHINE_PCBIOS
  49 #define  GRUB_CPU_INT_FLAGS_DEFAULT   GRUB_CPU_INT_FLAGS_INTERRUPT
  50 #else
  51 #define  GRUB_CPU_INT_FLAGS_DEFAULT   0
  52 #endif
  53
  54 void EXPORT_FUNC (grub_bios_interrupt) (grub_uint8_t intno,
  55                                         struct grub_bios_int_registers *regs);
  56 struct grub_i386_idt
  57 {
  58   grub_uint16_t limit;
  59   grub_uint32_t base;
  60 } __attribute__ ((packed));
  61
  62 #ifdef GRUB_MACHINE_PCBIOS
  63 extern struct grub_i386_idt *EXPORT_VAR(grub_realidt);
  64 #endif
  65
  66 #endif