osdep/lrmi.h

   1 /*
   2 Linux Real Mode Interface - A library of DPMI-like functions for Linux.
   3
   4 Copyright (C) 1998 by Josh Vanderhoof
   5
   6 You are free to distribute and modify this file, as long as you
   7 do not remove this copyright notice and clearly label modified
   8 versions as being modified.
   9
  10 This software has NO WARRANTY.  Use it at your own risk.
  11 Original location: http://cvs.debian.org/lrmi/
  12 */
  13
  14 #ifndef LRMI_H
  15 #define LRMI_H
  16
  17 struct LRMI_regs
  18         {
  19         unsigned int edi;
  20         unsigned int esi;
  21         unsigned int ebp;
  22         unsigned int reserved;
  23         unsigned int ebx;
  24         unsigned int edx;
  25         unsigned int ecx;
  26         unsigned int eax;
  27         unsigned short int flags;
  28         unsigned short int es;
  29         unsigned short int ds;
  30         unsigned short int fs;
  31         unsigned short int gs;
  32         unsigned short int ip;
  33         unsigned short int cs;
  34         unsigned short int sp;
  35         unsigned short int ss;
  36         };
  37
  38
  39 #ifndef LRMI_PREFIX
  40 #define LRMI_PREFIX LRMI_
  41 #endif
  42
  43 #define LRMI_CONCAT2(a, b)      a ## b
  44 #define LRMI_CONCAT(a, b)       LRMI_CONCAT2(a, b)
  45 #define LRMI_MAKENAME(a)        LRMI_CONCAT(LRMI_PREFIX, a)
  46
  47 /*
  48  Initialize
  49  returns 1 if sucessful, 0 for failure
  50 */
  51 #define LRMI_init LRMI_MAKENAME(init)
  52 int
  53 LRMI_init(void);
  54
  55 /*
  56  Simulate a 16 bit far call
  57  returns 1 if sucessful, 0 for failure
  58 */
  59 #define LRMI_call LRMI_MAKENAME(call)
  60 int
  61 LRMI_call(struct LRMI_regs *r);
  62
  63 /*
  64  Simulate a 16 bit interrupt
  65  returns 1 if sucessful, 0 for failure
  66 */
  67 #define LRMI_int LRMI_MAKENAME(int)
  68 int
  69 LRMI_int(int interrupt, struct LRMI_regs *r);
  70
  71 /*
  72  Allocate real mode memory
  73  The returned block is paragraph (16 byte) aligned
  74 */
  75 #define LRMI_alloc_real LRMI_MAKENAME(alloc_real)
  76 void *
  77 LRMI_alloc_real(int size);
  78
  79 /*
  80  Free real mode memory
  81 */
  82 #define LRMI_free_real LRMI_MAKENAME(free_real)
  83 void
  84 LRMI_free_real(void *m);
  85
  86 #endif