113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/*
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* \brief Genode/Nova specific VirtualBox SUPLib supplements
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* \author Norman Feske
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* \author Alexander Boettcher
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*/
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/*
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* Copyright (C) 2013-2014 Genode Labs GmbH
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*
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* This file is distributed under the terms of the GNU General Public License
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* version 2.
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*/
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#ifndef _VIRTUALBOX__SPEC__NOVA__SVM_H_
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#define _VIRTUALBOX__SPEC__NOVA__SVM_H_
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/* based on HWSVMR0.h - adjusted to Genode/Nova */
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#define GENODE_SVM_ASSERT_SELREG(REG) \
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AssertMsg(!pCtx->REG.Attr.n.u1Present || \
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(pCtx->REG.Attr.n.u1Granularity \
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? (pCtx->REG.u32Limit & 0xfffU) == 0xfffU \
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: pCtx->REG.u32Limit <= 0xfffffU), \
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("%u %u %#x %#x %#llx\n", pCtx->REG.Attr.n.u1Present, \
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pCtx->REG.Attr.n.u1Granularity, pCtx->REG.u32Limit, \
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pCtx->REG.Attr.u, pCtx->REG.u64Base))
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#define GENODE_READ_SELREG(REG) \
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pCtx->REG.Sel = utcb->REG.sel; \
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pCtx->REG.ValidSel = utcb->REG.sel; \
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pCtx->REG.fFlags = CPUMSELREG_FLAGS_VALID; \
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pCtx->REG.u32Limit = utcb->REG.limit; \
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pCtx->REG.u64Base = utcb->REG.base; \
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pCtx->REG.Attr.u = sel_ar_conv_from_nova(utcb->REG.ar)
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static inline bool svm_save_state(Nova::Utcb * utcb, VM * pVM, PVMCPU pVCpu)
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{
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PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
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GENODE_READ_SELREG(cs);
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GENODE_READ_SELREG(ds);
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GENODE_READ_SELREG(es);
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GENODE_READ_SELREG(fs);
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GENODE_READ_SELREG(gs);
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GENODE_READ_SELREG(ss);
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GENODE_SVM_ASSERT_SELREG(cs);
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GENODE_SVM_ASSERT_SELREG(ds);
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GENODE_SVM_ASSERT_SELREG(es);
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GENODE_SVM_ASSERT_SELREG(fs);
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GENODE_SVM_ASSERT_SELREG(gs);
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GENODE_SVM_ASSERT_SELREG(ss);
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GENODE_READ_SELREG(ldtr);
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GENODE_READ_SELREG(tr);
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return true;
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}
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#undef GENODE_ASSERT_SELREG
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#undef GENODE_READ_SELREG
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#define GENODE_WRITE_SELREG(REG) \
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Assert(pCtx->REG.fFlags & CPUMSELREG_FLAGS_VALID); \
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Assert(pCtx->REG.ValidSel == pCtx->REG.Sel); \
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utcb->REG.sel = pCtx->REG.Sel; \
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utcb->REG.limit = pCtx->REG.u32Limit; \
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utcb->REG.base = pCtx->REG.u64Base; \
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utcb->REG.ar = sel_ar_conv_to_nova(pCtx->REG.Attr.u)
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static inline bool svm_load_state(Nova::Utcb * utcb, VM * pVM, PVMCPU pVCpu)
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{
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PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
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#ifdef __x86_64__
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utcb->mtd |= Nova::Mtd::EFER;
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utcb->efer = pCtx->msrEFER | MSR_K6_EFER_SVME;
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/* unimplemented */
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if (CPUMIsGuestInLongModeEx(pCtx))
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return false;
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utcb->efer &= ~MSR_K6_EFER_LME;
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#endif
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utcb->mtd |= Nova::Mtd::ESDS;
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GENODE_WRITE_SELREG(es);
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GENODE_WRITE_SELREG(ds);
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utcb->mtd |= Nova::Mtd::FSGS;
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GENODE_WRITE_SELREG(fs);
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GENODE_WRITE_SELREG(gs);
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utcb->mtd |= Nova::Mtd::CSSS;
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GENODE_WRITE_SELREG(cs);
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GENODE_WRITE_SELREG(ss);
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/* ldtr */
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utcb->mtd |= Nova::Mtd::LDTR;
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GENODE_WRITE_SELREG(ldtr);
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/* tr */
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utcb->mtd |= Nova::Mtd::TR;
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GENODE_WRITE_SELREG(tr);
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return true;
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}
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#undef GENODE_WRITE_SELREG
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#endif /* _VIRTUALBOX__SPEC__NOVA__SVM_H_ */
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