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Diffstat (limited to 'include/VBox/vmm/vmcc.h')
| -rw-r--r-- | include/VBox/vmm/vmcc.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/include/VBox/vmm/vmcc.h b/include/VBox/vmm/vmcc.h new file mode 100644 index 00000000..3a143fae --- /dev/null +++ b/include/VBox/vmm/vmcc.h @@ -0,0 +1,148 @@ +/** @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 */ + |