a5c70244bf
Fixes #2337
129 lines
3.0 KiB
C
129 lines
3.0 KiB
C
/*
|
|
* \brief Genode/Nova specific VirtualBox SUPLib supplements
|
|
* \author Norman Feske
|
|
* \author Alexander Boettcher
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2013-2017 Genode Labs GmbH
|
|
*
|
|
* This file is distributed under the terms of the GNU General Public License
|
|
* version 2.
|
|
*/
|
|
|
|
#ifndef _VIRTUALBOX__SPEC__NOVA__VMX_H_
|
|
#define _VIRTUALBOX__SPEC__NOVA__VMX_H_
|
|
|
|
#define GENODE_READ_SELREG_REQUIRED(REG) \
|
|
(pCtx->REG.Sel != utcb->REG.sel) || \
|
|
(pCtx->REG.ValidSel != utcb->REG.sel) || \
|
|
(pCtx->REG.fFlags != CPUMSELREG_FLAGS_VALID) || \
|
|
(pCtx->REG.u32Limit != utcb->REG.limit) || \
|
|
(pCtx->REG.u64Base != utcb->REG.base) || \
|
|
(pCtx->REG.Attr.u != sel_ar_conv_from_nova(utcb->REG.ar))
|
|
|
|
#define GENODE_READ_SELREG(REG) \
|
|
pCtx->REG.Sel = utcb->REG.sel; \
|
|
pCtx->REG.ValidSel = utcb->REG.sel; \
|
|
pCtx->REG.fFlags = CPUMSELREG_FLAGS_VALID; \
|
|
pCtx->REG.u32Limit = utcb->REG.limit; \
|
|
pCtx->REG.u64Base = utcb->REG.base; \
|
|
pCtx->REG.Attr.u = sel_ar_conv_from_nova(utcb->REG.ar)
|
|
|
|
static inline bool vmx_save_state(Nova::Utcb * utcb, VM * pVM, PVMCPU pVCpu)
|
|
{
|
|
PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
|
|
|
|
GENODE_READ_SELREG(cs);
|
|
GENODE_READ_SELREG(ds);
|
|
GENODE_READ_SELREG(es);
|
|
GENODE_READ_SELREG(fs);
|
|
GENODE_READ_SELREG(gs);
|
|
GENODE_READ_SELREG(ss);
|
|
|
|
if (GENODE_READ_SELREG_REQUIRED(ldtr)) {
|
|
GENODE_READ_SELREG(ldtr);
|
|
CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_LDTR);
|
|
}
|
|
if (GENODE_READ_SELREG_REQUIRED(tr)) {
|
|
GENODE_READ_SELREG(tr);
|
|
CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_TR);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
#undef GENODE_READ_SELREG_REQUIRED
|
|
#undef GENODE_READ_SELREG
|
|
|
|
|
|
enum { VMCS_SEG_UNUSABLE = 0x10000 };
|
|
|
|
#define GENODE_WRITE_SELREG(REG) \
|
|
Assert(pCtx->REG.fFlags & CPUMSELREG_FLAGS_VALID); \
|
|
Assert(pCtx->REG.ValidSel == pCtx->REG.Sel); \
|
|
utcb->REG.sel = pCtx->REG.Sel; \
|
|
utcb->REG.limit = pCtx->REG.u32Limit; \
|
|
utcb->REG.base = pCtx->REG.u64Base; \
|
|
utcb->REG.ar = sel_ar_conv_to_nova(pCtx->REG.Attr.u ? : VMCS_SEG_UNUSABLE);
|
|
|
|
static inline bool vmx_load_state(Nova::Utcb * utcb, VM * pVM, PVMCPU pVCpu)
|
|
{
|
|
PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
|
|
|
|
{
|
|
utcb->mtd |= Nova::Mtd::ESDS;
|
|
GENODE_WRITE_SELREG(es);
|
|
GENODE_WRITE_SELREG(ds);
|
|
}
|
|
|
|
{
|
|
utcb->mtd |= Nova::Mtd::FSGS;
|
|
GENODE_WRITE_SELREG(fs);
|
|
GENODE_WRITE_SELREG(gs);
|
|
}
|
|
|
|
{
|
|
utcb->mtd |= Nova::Mtd::CSSS;
|
|
GENODE_WRITE_SELREG(cs);
|
|
GENODE_WRITE_SELREG(ss);
|
|
}
|
|
|
|
/* ldtr */
|
|
if (pCtx->ldtr.Sel == 0) {
|
|
{
|
|
utcb->mtd |= Nova::Mtd::LDTR;
|
|
|
|
utcb->ldtr.sel = 0;
|
|
utcb->ldtr.limit = 0;
|
|
utcb->ldtr.base = 0;
|
|
utcb->ldtr.ar = sel_ar_conv_to_nova(0x82);
|
|
}
|
|
} else {
|
|
{
|
|
utcb->mtd |= Nova::Mtd::LDTR;
|
|
|
|
utcb->ldtr.sel = pCtx->ldtr.Sel;
|
|
utcb->ldtr.limit = pCtx->ldtr.u32Limit;
|
|
utcb->ldtr.base = pCtx->ldtr.u64Base;
|
|
utcb->ldtr.ar = sel_ar_conv_to_nova(pCtx->ldtr.Attr.u);
|
|
}
|
|
}
|
|
|
|
/* tr */
|
|
{
|
|
utcb->mtd |= Nova::Mtd::TR;
|
|
|
|
utcb->tr.sel = pCtx->tr.Sel;
|
|
utcb->tr.limit = pCtx->tr.u32Limit;
|
|
utcb->tr.base = pCtx->tr.u64Base;
|
|
utcb->tr.ar = sel_ar_conv_to_nova(pCtx->tr.Attr.u);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
#undef GENODE_WRITE_SELREG
|
|
|
|
#endif /* _VIRTUALBOX__SPEC__NOVA__VMX_H_ */
|