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/** @file
* VM - The Virtual Machine, GVM/GVMCPU or VM/VMCPU depending on context.
*/
/*
* Copyright (C) 2019-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef VBOX_INCLUDED_vmm_vmcc_h
#define VBOX_INCLUDED_vmm_vmcc_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/vmm/vm.h>
#ifdef IN_RING0
# include <VBox/vmm/gvm.h>
#else
# include <VBox/vmm/uvm.h>
#endif
/** @typedef VMCC
* Context specific VM derived structure.
* This is plain VM in ring-3 and GVM (inherits from VM) in ring-0. */
/** @typedef VMCPUCC
* Context specific VMCPU derived structure.
* This is plain VM in ring-3 and GVMCPU (inherits from VMCPU) in ring-0. */
#ifdef IN_RING0
typedef GVM VMCC;
typedef GVMCPU VMCPUCC;
#else
typedef VM VMCC;
typedef VMCPU VMCPUCC;
#endif
/** @def VMCC_GET_CPU_0
* Gets the context specfic pointer to virtual CPU \#0.
* @param a_pVM The context specfic VM structure.
*/
#ifdef IN_RING0
# define VMCC_GET_CPU_0(a_pVM) (&(a_pVM)->aCpus[0])
#else
# define VMCC_GET_CPU_0(a_pVM) ((a_pVM)->CTX_SUFF(apCpus)[0])
#endif
/** @def VMCC_GET_CPU
* Gets the context specfic pointer to a virtual CPU by index (ID).
* @param a_pVM The context specfic VM structure.
* @param a_idCpu The CPU number to get (caller ensures validity).
*/
#ifdef IN_RING0
# define VMCC_GET_CPU(a_pVM, a_idCpu) (&(a_pVM)->aCpus[(a_idCpu)])
#else
# define VMCC_GET_CPU(a_pVM, a_idCpu) ((a_pVM)->CTX_SUFF(apCpus)[(a_idCpu)])
#endif
/** @def VMCC_FOR_EACH_VMCPU
* For enumerating VCpus in ascending order, avoiding unnecessary apCpusR0
* access in ring-0, caching the CPU count and not checking for CPU \#0.
*
* Defines local variables @c idCpu, @c pVCpu and @c cCpus.
*
* @param a_pVM The VM handle.
*
* @note Close loop with VMCC_FOR_EACH_VMCPU_END.
*/
#define VMCC_FOR_EACH_VMCPU(a_pVM) \
do { \
VMCPUID idCpu = 0; \
VMCPUID const cCpus = (a_pVM)->cCpus; \
PVMCPUCC pVCpu = VMCC_GET_CPU_0(a_pVM); \
for (;;) \
{
/** @def VMCC_FOR_EACH_VMCPU_END
* Ends a VMCC_FOR_EACH_VMCPU loop.
* @param a_pVM The VM handle.
*/
#define VMCC_FOR_EACH_VMCPU_END(a_pVM) \
/* advance */ \
if (++idCpu >= cCpus) \
break; \
pVCpu = VMCC_GET_CPU(pVM, idCpu); \
} \
} while (0)
/**
* Execute the given statement for each virtual CPU in an environment with
* @c pVCpu and @c idCpu variables.
*
* @param a_pVM The VM handle.
* @param a_Stmt The statement to execute.
*/
#define VMCC_FOR_EACH_VMCPU_STMT(a_pVM, a_Stmt) VMCC_FOR_EACH_VMCPU(pVM) { a_Stmt; } VMCC_FOR_EACH_VMCPU_END(pVM)
/** @def VMCC_GET_VMR0_FOR_CALL(pVM) */
#if defined(IN_RING3)
# define VMCC_GET_VMR0_FOR_CALL(a_pVM) ((a_pVM)->pVMR0ForCall)
#elif defined(IN_RING3)
# define VMCC_GET_VMR0_FOR_CALL(a_pVM) ((a_pVM)->pVMR0)
#else
# define VMCC_GET_VMR0_FOR_CALL(a_pVM) ((a_pVM)->ring3_only_macro)
#endif
/**
* Used to pick ring-0 or ring-3 VM component data.
*
* @code{.cpp}
* pVM->VMCC_CTX(pdm).s.pfnWorker
* @endcode
*/
#ifdef IN_RING0
# define VMCC_CTX(a_Name) a_Name ## r0
#else
# define VMCC_CTX(a_Name) a_Name
#endif
#endif /* !VBOX_INCLUDED_vmm_vmcc_h */
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