b18ac2d833
- Define data structures to contain the SVM vcpu context - Define data structures to contain guest and host software context - Change license in vmcb.h and vmcb.c to remove references to NetApp that inadvertently sneaked in when the license text was copied from amdv.c. Submitted by: Anish Gupta (akgupt3@gmail.com)
117 lines
2.8 KiB
C
117 lines
2.8 KiB
C
/*-
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* Copyright (c) 2013 Anish Gupta (akgupt3@gmail.com)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SVM_H_
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#define _SVM_H_
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#define BIT(n) (1ULL << n)
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#define ERR(fmt, args...) \
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printf("SVM ERROR:%s " fmt "\n", __func__, ##args);
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/*
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* Software saved machine state for guest and host.
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*/
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/* Additional guest register state */
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struct svm_gctx {
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register_t sctx_rdx;
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register_t sctx_rdi;
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register_t sctx_rsi;
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/* Points to host context area. */
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register_t sctx_hostctx_base;
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};
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/* Additional host register state */
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struct svm_hctx {
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uint16_t sctx_fs;
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uint16_t sctx_gs;
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register_t sctx_rsp;
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};
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/* Common register context area for guest and host. */
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struct svm_regctx {
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register_t sctx_rbp;
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register_t sctx_rbx;
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register_t sctx_rcx;
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register_t sctx_r8;
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register_t sctx_r9;
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register_t sctx_r10;
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register_t sctx_r11;
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register_t sctx_r12;
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register_t sctx_r13;
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register_t sctx_r14;
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register_t sctx_r15;
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union {
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struct svm_hctx h; /* host-specific register state */
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struct svm_gctx g; /* guest-specific register state */
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} e;
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};
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void svm_launch(uint64_t pa, struct svm_regctx *, struct svm_regctx *);
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static __inline void
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disable_gintr(void)
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{
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__asm __volatile("clgi" : : :);
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}
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static __inline void
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enable_gintr(void)
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{
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__asm __volatile("stgi" : : :);
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}
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static __inline void
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save_cr2(uint64_t *cr2)
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{
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__asm __volatile(
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"mov %%cr2, %%rax; movq %%rax, %0"
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:"=m"(*cr2)
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:
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:"rax", "memory");
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}
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static __inline void
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load_cr2(uint64_t *cr2)
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{
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__asm __volatile(
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"movq %0, %%rax; movq %%rax, %%cr2"
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:
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:"m"(*cr2)
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:"rax");
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}
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#endif /* _SVM_H_ */
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