palacios/include/palacios/vmm_exits.h

   1 /*
   2  * This file is part of the Palacios Virtual Machine Monitor developed
   3  * by the V3VEE Project with funding from the United States National
   4  * Science Foundation and the Department of Energy.
   5  *
   6  * The V3VEE Project is a joint project between Northwestern University
   7  * and the University of New Mexico.  You can find out more at
   8  * http://www.v3vee.org
   9  *
  10  * Copyright (c) 2012, Jack Lange <jarusl@cs.northwestern.edu>
  11  * Copyright (c) 2012, The V3VEE Project <http://www.v3vee.org>
  12  * All rights reserved.
  13  *
  14  * Author: Jack Lange <jarusl@cs.northwestern.edu>
  15  *
  16  * This is free software.  You are permitted to use,
  17  * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
  18  */
  19
  20 #ifndef __VMM_EXITS_H__
  21 #define __VMM_EXITS_H__
  22
  23
  24 #ifdef __V3VEE__
  25
  26 #include <palacios/vmm_types.h>
  27
  28
  29
  30 struct guest_info;
  31 struct v3_vm_info;
  32
  33 typedef enum { V3_EXIT_RDTSC,
  34                V3_EXIT_RDTSCP,
  35                V3_EXIT_SWINTR,
  36                V3_EXIT_INVALID } v3_exit_type_t;
  37
  38
  39
  40
  41 struct v3_exit_hook {
  42
  43     int (*enable)(struct guest_info * core, v3_exit_type_t exit_type);
  44     int (*disable)(struct guest_info * core, v3_exit_type_t exit_type);
  45
  46     struct {
  47         union {
  48             uint32_t flags;
  49             struct {
  50                 uint32_t hooked      : 1;
  51                 uint32_t registered  : 1;
  52                 uint32_t rsvd        : 30;
  53             } __attribute__((packed));
  54         } __attribute__((packed));
  55
  56     } __attribute__((packed));
  57
  58
  59
  60     int (*handler)(struct guest_info * core, v3_exit_type_t exit_type,
  61                 void * priv_data, void * exit_data);
  62     void * priv_data;
  63
  64 };
  65
  66
  67 struct v3_exit_map {
  68
  69     struct v3_exit_hook * exits;
  70 };
  71
  72
  73
  74
  75 int v3_init_exit_hooks(struct v3_vm_info * vm);
  76 int v3_deinit_exit_hooks(struct v3_vm_info * vm);
  77
  78 int v3_init_exit_hooks_core(struct guest_info * core);
  79
  80
  81
  82 int v3_register_exit(struct v3_vm_info * vm, v3_exit_type_t exit_type,
  83                      int (*enable)(struct guest_info * core, v3_exit_type_t exit_type),
  84                      int (*disable)(struct guest_info * core, v3_exit_type_t exit_type));
  85
  86
  87
  88 int v3_dispatch_exit_hook(struct guest_info * core, v3_exit_type_t exit_type, void * exit_data);
  89
  90
  91
  92
  93
  94
  95 int v3_hook_exit(struct v3_vm_info * vm, v3_exit_type_t exit_type,
  96                  int (*handler)(struct guest_info * core, v3_exit_type_t exit_type,
  97                              void * priv_data, void * exit_data),
  98                  void * priv_data,
  99                  struct guest_info * current_core);
 100
 101 int v3_unhook_exit(struct v3_vm_info * vm, v3_exit_type_t exit_type, struct guest_info * current_core);
 102
 103
 104 #endif
 105
 106 #endif