| 1 | /* $Id: initterm-r0drv-darwin.cpp 85167 2020-07-10 10:06:55Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Initialization & Termination, R0 Driver, Darwin.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2020 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #include "the-darwin-kernel.h"
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| 32 | #include "internal/iprt.h"
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| 33 |
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| 34 | #include <iprt/errcore.h>
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| 35 | #include <iprt/assert.h>
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| 36 | #include <iprt/dbg.h>
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| 37 | #include "internal/initterm.h"
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| 38 |
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| 39 |
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| 40 |
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| 41 | /*********************************************************************************************************************************
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| 42 | * Global Variables *
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| 43 | *********************************************************************************************************************************/
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| 44 | /** Pointer to the lock group used by IPRT. */
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| 45 | DECL_HIDDEN_DATA(lck_grp_t *) g_pDarwinLockGroup = NULL;
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| 46 | /** Pointer to the ast_pending function, if found. */
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| 47 | DECL_HIDDEN_DATA(PFNR0DARWINASTPENDING) g_pfnR0DarwinAstPending = NULL;
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| 48 | /** Pointer to the cpu_interrupt function, if found. */
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| 49 | DECL_HIDDEN_DATA(PFNR0DARWINCPUINTERRUPT) g_pfnR0DarwinCpuInterrupt = NULL;
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| 50 | #ifdef DEBUG
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| 51 | /** Pointer to the vm_fault_external function - used once for debugging @bugref{9466}. */
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| 52 | DECL_HIDDEN_DATA(PFNR0DARWINVMFAULTEXTERNAL) g_pfnR0DarwinVmFaultExternal = NULL;
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| 53 | #endif
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| 54 |
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| 55 |
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| 56 | DECLHIDDEN(int) rtR0InitNative(void)
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| 57 | {
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| 58 | IPRT_DARWIN_SAVE_EFL_AC();
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| 59 |
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| 60 | /*
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| 61 | * Create the lock group.
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| 62 | */
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| 63 | g_pDarwinLockGroup = lck_grp_alloc_init("IPRT", LCK_GRP_ATTR_NULL);
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| 64 | AssertReturn(g_pDarwinLockGroup, VERR_NO_MEMORY);
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| 65 |
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| 66 | /*
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| 67 | * Initialize the preemption hacks.
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| 68 | */
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| 69 | int rc = rtThreadPreemptDarwinInit();
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| 70 | if (RT_SUCCESS(rc))
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| 71 | {
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| 72 | /*
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| 73 | * Try resolve kernel symbols we need but apple don't wish to give us.
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| 74 | */
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| 75 | RTDBGKRNLINFO hKrnlInfo;
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| 76 | rc = RTR0DbgKrnlInfoOpen(&hKrnlInfo, 0 /*fFlags*/);
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| 77 | if (RT_SUCCESS(rc))
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| 78 | {
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| 79 | RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "ast_pending", (void **)&g_pfnR0DarwinAstPending);
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| 80 | printf("ast_pending=%p\n", (void *)(uintptr_t)g_pfnR0DarwinAstPending);
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| 81 | RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "cpu_interrupt", (void **)&g_pfnR0DarwinCpuInterrupt);
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| 82 | printf("cpu_interrupt=%p\n", (void *)(uintptr_t)g_pfnR0DarwinCpuInterrupt);
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| 83 | #ifdef DEBUG
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| 84 | RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "vm_fault_external", (void **)&g_pfnR0DarwinVmFaultExternal);
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| 85 | printf("vm_fault_external=%p\n", (void *)(uintptr_t)g_pfnR0DarwinVmFaultExternal);
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| 86 | #endif
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| 87 | RTR0DbgKrnlInfoRelease(hKrnlInfo);
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| 88 | }
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| 89 | if (RT_FAILURE(rc))
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| 90 | {
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| 91 | printf("rtR0InitNative: warning! failed to resolve special kernel symbols\n");
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| 92 | rc = VINF_SUCCESS;
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| 93 | }
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| 94 | }
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| 95 | if (RT_FAILURE(rc))
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| 96 | rtR0TermNative();
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| 97 |
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| 98 | IPRT_DARWIN_RESTORE_EFL_AC();
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| 99 | return rc;
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| 100 | }
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| 101 |
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| 102 |
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| 103 | DECLHIDDEN(void) rtR0TermNative(void)
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| 104 | {
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| 105 | IPRT_DARWIN_SAVE_EFL_AC();
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| 106 |
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| 107 | /*
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| 108 | * Preemption hacks before the lock group.
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| 109 | */
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| 110 | rtThreadPreemptDarwinTerm();
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| 111 |
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| 112 | /*
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| 113 | * Free the lock group.
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| 114 | */
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| 115 | if (g_pDarwinLockGroup)
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| 116 | {
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| 117 | lck_grp_free(g_pDarwinLockGroup);
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| 118 | g_pDarwinLockGroup = NULL;
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| 119 | }
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| 120 |
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| 121 | IPRT_DARWIN_RESTORE_EFL_AC();
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| 122 | }
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| 123 |
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