123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/*
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* vmx_assist.h: Context definitions for the VMXASSIST world switch.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Leendert van Doorn, leendert@watson.ibm.com
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* Copyright (c) 2005, International Business Machines Corporation.
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*/
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#ifndef _VMX_ASSIST_H_
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#define _VMX_ASSIST_H_
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#define VMXASSIST_BASE 0xD0000
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#define VMXASSIST_MAGIC 0x17101966
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#define VMXASSIST_MAGIC_OFFSET (VMXASSIST_BASE+8)
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#define VMXASSIST_NEW_CONTEXT (VMXASSIST_BASE + 12)
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#define VMXASSIST_OLD_CONTEXT (VMXASSIST_NEW_CONTEXT + 4)
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#ifndef __ASSEMBLY__
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#define NR_EXCEPTION_HANDLER 32
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#define NR_INTERRUPT_HANDLERS 16
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#define NR_TRAPS (NR_EXCEPTION_HANDLER+NR_INTERRUPT_HANDLERS)
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union vmcs_arbytes {
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struct arbyte_fields {
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unsigned int seg_type : 4,
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s : 1,
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dpl : 2,
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p : 1,
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reserved0 : 4,
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avl : 1,
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reserved1 : 1,
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default_ops_size: 1,
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g : 1,
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null_bit : 1,
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reserved2 : 15;
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} fields;
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unsigned int bytes;
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};
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/*
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* World switch state
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*/
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struct vmx_assist_context {
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uint32_t eip; /* execution pointer */
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uint32_t esp; /* stack pointer */
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uint32_t eflags; /* flags register */
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uint32_t cr0;
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uint32_t cr3; /* page table directory */
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uint32_t cr4;
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uint32_t idtr_limit; /* idt */
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uint32_t idtr_base;
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uint32_t gdtr_limit; /* gdt */
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uint32_t gdtr_base;
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uint32_t cs_sel; /* cs selector */
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uint32_t cs_limit;
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uint32_t cs_base;
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union vmcs_arbytes cs_arbytes;
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uint32_t ds_sel; /* ds selector */
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uint32_t ds_limit;
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uint32_t ds_base;
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union vmcs_arbytes ds_arbytes;
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uint32_t es_sel; /* es selector */
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uint32_t es_limit;
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uint32_t es_base;
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union vmcs_arbytes es_arbytes;
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uint32_t ss_sel; /* ss selector */
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uint32_t ss_limit;
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uint32_t ss_base;
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union vmcs_arbytes ss_arbytes;
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uint32_t fs_sel; /* fs selector */
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uint32_t fs_limit;
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uint32_t fs_base;
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union vmcs_arbytes fs_arbytes;
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uint32_t gs_sel; /* gs selector */
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uint32_t gs_limit;
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uint32_t gs_base;
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union vmcs_arbytes gs_arbytes;
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uint32_t tr_sel; /* task selector */
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uint32_t tr_limit;
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uint32_t tr_base;
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union vmcs_arbytes tr_arbytes;
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uint32_t ldtr_sel; /* ldtr selector */
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uint32_t ldtr_limit;
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uint32_t ldtr_base;
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union vmcs_arbytes ldtr_arbytes;
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unsigned char rm_irqbase[2];
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};
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typedef struct vmx_assist_context vmx_assist_context_t;
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#endif /* __ASSEMBLY__ */
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#endif /* _VMX_ASSIST_H_ */
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/*
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* Local variables:
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* mode: C
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* c-set-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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