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/* $Id: initterm-r0drv-darwin.cpp $ */
/** @file
* IPRT - Initialization & Termination, R0 Driver, Darwin.
*/
/*
* Copyright (C) 2006-2023 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
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "the-darwin-kernel.h"
#include "internal/iprt.h"
#include <iprt/errcore.h>
#include <iprt/assert.h>
#include <iprt/dbg.h>
#include "internal/initterm.h"
/*********************************************************************************************************************************
* Global Variables *
*********************************************************************************************************************************/
/** Pointer to the lock group used by IPRT. */
DECL_HIDDEN_DATA(lck_grp_t *) g_pDarwinLockGroup = NULL;
/** Pointer to the ast_pending function, if found. */
DECL_HIDDEN_DATA(PFNR0DARWINASTPENDING) g_pfnR0DarwinAstPending = NULL;
/** Pointer to the cpu_interrupt function, if found. */
DECL_HIDDEN_DATA(PFNR0DARWINCPUINTERRUPT) g_pfnR0DarwinCpuInterrupt = NULL;
#ifdef DEBUG
/** Pointer to the vm_fault_external function - used once for debugging @bugref{9466}. */
DECL_HIDDEN_DATA(PFNR0DARWINVMFAULTEXTERNAL) g_pfnR0DarwinVmFaultExternal = NULL;
#endif
DECLHIDDEN(int) rtR0InitNative(void)
{
IPRT_DARWIN_SAVE_EFL_AC();
/*
* Create the lock group.
*/
g_pDarwinLockGroup = lck_grp_alloc_init("IPRT", LCK_GRP_ATTR_NULL);
AssertReturn(g_pDarwinLockGroup, VERR_NO_MEMORY);
/*
* Initialize the preemption hacks.
*/
int rc = rtThreadPreemptDarwinInit();
if (RT_SUCCESS(rc))
{
/*
* Try resolve kernel symbols we need but apple don't wish to give us.
*/
RTDBGKRNLINFO hKrnlInfo;
rc = RTR0DbgKrnlInfoOpen(&hKrnlInfo, 0 /*fFlags*/);
if (RT_SUCCESS(rc))
{
RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "ast_pending", (void **)&g_pfnR0DarwinAstPending);
printf("ast_pending=%p\n", (void *)(uintptr_t)g_pfnR0DarwinAstPending);
RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "cpu_interrupt", (void **)&g_pfnR0DarwinCpuInterrupt);
printf("cpu_interrupt=%p\n", (void *)(uintptr_t)g_pfnR0DarwinCpuInterrupt);
#ifdef DEBUG
RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "vm_fault_external", (void **)&g_pfnR0DarwinVmFaultExternal);
printf("vm_fault_external=%p\n", (void *)(uintptr_t)g_pfnR0DarwinVmFaultExternal);
#endif
RTR0DbgKrnlInfoRelease(hKrnlInfo);
}
if (RT_FAILURE(rc))
{
printf("rtR0InitNative: warning! failed to resolve special kernel symbols\n");
rc = VINF_SUCCESS;
}
}
if (RT_FAILURE(rc))
rtR0TermNative();
IPRT_DARWIN_RESTORE_EFL_AC();
return rc;
}
DECLHIDDEN(void) rtR0TermNative(void)
{
IPRT_DARWIN_SAVE_EFL_AC();
/*
* Preemption hacks before the lock group.
*/
rtThreadPreemptDarwinTerm();
/*
* Free the lock group.
*/
if (g_pDarwinLockGroup)
{
lck_grp_free(g_pDarwinLockGroup);
g_pDarwinLockGroup = NULL;
}
IPRT_DARWIN_RESTORE_EFL_AC();
}
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