90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2011-2013 Stanislav Shwartsman
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// Written by Stanislav Shwartsman [sshwarts at sourceforge net]
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
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//
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/////////////////////////////////////////////////////////////////////////
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#define NEED_CPU_REG_SHORTCUTS 1
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#include "bochs.h"
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#include "cpu.h"
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#define LOG_THIS BX_CPU_THIS_PTR
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BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::VMFUNC(bxInstruction_c *i)
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{
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#if BX_SUPPORT_VMX >= 2
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if (! BX_CPU_THIS_PTR in_vmx_guest || ! SECONDARY_VMEXEC_CONTROL(VMX_VM_EXEC_CTRL3_VMFUNC_ENABLE))
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exception(BX_UD_EXCEPTION, 0);
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VMCS_CACHE *vm = &BX_CPU_THIS_PTR vmcs;
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Bit32u function = EAX;
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if (function >= 64) {
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BX_ERROR(("VMFUNC: invalid function 0x%08x", function));
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exception(BX_UD_EXCEPTION, 0);
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}
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if (0 == (vm->vmfunc_ctrls & (BX_CONST64(1)<<function))) {
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BX_ERROR(("VMFUNC: function %d not enabled", function));
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VMexit(VMX_VMEXIT_VMFUNC, 0);
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}
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switch(function) {
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case VMX_VMFUNC_EPTP_SWITCHING:
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vmfunc_eptp_switching();
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break;
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default:
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BX_PANIC(("VMFUNC: invalid function 0x%08x", function));
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}
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#endif
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BX_NEXT_TRACE(i);
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}
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#if BX_SUPPORT_VMX >= 2
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void BX_CPU_C::vmfunc_eptp_switching(void)
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{
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Bit32u eptp_list_entry = ECX;
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if (eptp_list_entry >= 512) {
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BX_ERROR(("vmfunc_eptp_switching: invalid EPTP list entry %d", eptp_list_entry));
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VMexit(VMX_VMEXIT_VMFUNC, 0);
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}
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VMCS_CACHE *vm = &BX_CPU_THIS_PTR vmcs;
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Bit64u temp_eptp;
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access_read_physical(vm->eptp_list_address + 8 * ECX, 8, &temp_eptp);
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if (! is_eptptr_valid(temp_eptp)) {
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BX_ERROR(("vmfunc_eptp_switching: invalid EPTP value in EPTP entry %d", ECX));
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VMexit(VMX_VMEXIT_VMFUNC, 0);
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}
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vm->eptptr = temp_eptp;
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VMwrite64(VMCS_64BIT_CONTROL_EPTPTR, temp_eptp);
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TLB_flush();
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if (BX_SUPPORT_VMX_EXTENSION(BX_VMX_EPT_EXCEPTION)) {
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vm->eptp_index = eptp_list_entry /* & 0xffff */ /* not needed because eptp_list_entry < 512 */;
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VMwrite16(VMCS_16BIT_CONTROL_EPTP_INDEX, vm->eptp_index);
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}
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}
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#endif
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