2 * vmx_assist.h: Context definitions for the VMXASSIST world switch.
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to
6 * deal in the Software without restriction, including without limitation the
7 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
8 * sell copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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20 * DEALINGS IN THE SOFTWARE.
22 * Leendert van Doorn, leendert@watson.ibm.com
23 * Copyright (c) 2005, International Business Machines Corporation.
26 #ifndef _VMX_ASSIST_H_
27 #define _VMX_ASSIST_H_
29 #include <palacios/vm_guest.h>
31 #define VMXASSIST_BASE 0xD0000
32 #define VMXASSIST_MAGIC 0x17101966
33 #define VMXASSIST_MAGIC_OFFSET (VMXASSIST_BASE+8)
35 #define VMXASSIST_NEW_CONTEXT (VMXASSIST_BASE + 12)
36 #define VMXASSIST_OLD_CONTEXT (VMXASSIST_NEW_CONTEXT + 4)
40 #define NR_EXCEPTION_HANDLER 32
41 #define NR_INTERRUPT_HANDLERS 16
42 #define NR_TRAPS (NR_EXCEPTION_HANDLER+NR_INTERRUPT_HANDLERS)
45 struct arbyte_fields {
46 unsigned int seg_type : 4,
64 struct vmx_assist_context {
65 uint32_t eip; /* execution pointer */
66 uint32_t esp; /* stack pointer */
67 uint32_t eflags; /* flags register */
69 uint32_t cr3; /* page table directory */
71 uint32_t idtr_limit; /* idt */
73 uint32_t gdtr_limit; /* gdt */
75 uint32_t cs_sel; /* cs selector */
78 union vmcs_arbytes cs_arbytes;
79 uint32_t ds_sel; /* ds selector */
82 union vmcs_arbytes ds_arbytes;
83 uint32_t es_sel; /* es selector */
86 union vmcs_arbytes es_arbytes;
87 uint32_t ss_sel; /* ss selector */
90 union vmcs_arbytes ss_arbytes;
91 uint32_t fs_sel; /* fs selector */
94 union vmcs_arbytes fs_arbytes;
95 uint32_t gs_sel; /* gs selector */
98 union vmcs_arbytes gs_arbytes;
99 uint32_t tr_sel; /* task selector */
102 union vmcs_arbytes tr_arbytes;
103 uint32_t ldtr_sel; /* ldtr selector */
106 union vmcs_arbytes ldtr_arbytes;
108 unsigned char rm_irqbase[2];
110 typedef struct vmx_assist_context vmx_assist_context_t;
112 int v3_vmxassist_ctx_switch(struct guest_info * info);
114 #endif /* __ASSEMBLY__ */
116 #endif /* _VMX_ASSIST_H_ */
124 * indent-tabs-mode: nil