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
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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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 #define VMXASSIST_BASE 0xD0000
30 #define VMXASSIST_MAGIC 0x17101966
31 #define VMXASSIST_MAGIC_OFFSET (VMXASSIST_BASE+8)
33 #define VMXASSIST_NEW_CONTEXT (VMXASSIST_BASE + 12)
34 #define VMXASSIST_OLD_CONTEXT (VMXASSIST_NEW_CONTEXT + 4)
38 #define NR_EXCEPTION_HANDLER 32
39 #define NR_INTERRUPT_HANDLERS 16
40 #define NR_TRAPS (NR_EXCEPTION_HANDLER+NR_INTERRUPT_HANDLERS)
43 struct arbyte_fields {
44 unsigned int seg_type : 4,
62 struct vmx_assist_context {
63 uint32_t eip; /* execution pointer */
64 uint32_t esp; /* stack pointer */
65 uint32_t eflags; /* flags register */
67 uint32_t cr3; /* page table directory */
69 uint32_t idtr_limit; /* idt */
71 uint32_t gdtr_limit; /* gdt */
73 uint32_t cs_sel; /* cs selector */
76 union vmcs_arbytes cs_arbytes;
77 uint32_t ds_sel; /* ds selector */
80 union vmcs_arbytes ds_arbytes;
81 uint32_t es_sel; /* es selector */
84 union vmcs_arbytes es_arbytes;
85 uint32_t ss_sel; /* ss selector */
88 union vmcs_arbytes ss_arbytes;
89 uint32_t fs_sel; /* fs selector */
92 union vmcs_arbytes fs_arbytes;
93 uint32_t gs_sel; /* gs selector */
96 union vmcs_arbytes gs_arbytes;
97 uint32_t tr_sel; /* task selector */
100 union vmcs_arbytes tr_arbytes;
101 uint32_t ldtr_sel; /* ldtr selector */
104 union vmcs_arbytes ldtr_arbytes;
106 unsigned char rm_irqbase[2];
108 typedef struct vmx_assist_context vmx_assist_context_t;
110 #endif /* __ASSEMBLY__ */
112 #endif /* _VMX_ASSIST_H_ */
120 * indent-tabs-mode: nil