[95834] | 1 | /* $Id: compiler-vcc.h 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Internal header for the Visual C++ Compiler Support Code.
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| 4 | */
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| 5 |
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| 6 | /*
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[98103] | 7 | * Copyright (C) 2022-2023 Oracle and/or its affiliates.
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[95834] | 8 | *
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[96407] | 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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[95834] | 11 | *
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[96407] | 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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[95834] | 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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[96407] | 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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[95834] | 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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[96407] | 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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[95834] | 35 | */
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| 36 |
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| 37 | #ifndef IPRT_INCLUDED_INTERNAL_compiler_vcc_h
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| 38 | #define IPRT_INCLUDED_INTERNAL_compiler_vcc_h
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| 39 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 40 | # pragma once
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| 41 | #endif
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| 42 |
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| 43 | #include <iprt/types.h>
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| 44 |
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| 45 | /** @name Special sections.
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| 46 | * @{
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| 47 | */
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| 48 |
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| 49 | #ifdef IPRT_COMPILER_VCC_WITH_C_INIT_TERM_SECTIONS
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| 50 | # pragma section(".CRT$XIA", read, long) /* start C initializers */
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| 51 | # pragma section(".CRT$XIAA", read, long)
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| 52 | # pragma section(".CRT$XIZ", read, long)
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| 53 |
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| 54 | # pragma section(".CRT$XPA", read, long) /* start early C terminators */
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| 55 | # pragma section(".CRT$XPAA", read, long)
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| 56 | # pragma section(".CRT$XPZ", read, long)
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| 57 |
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| 58 | # pragma section(".CRT$XTA", read, long) /* start C terminators */
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| 59 | # pragma section(".CRT$XTAA", read, long)
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| 60 | # pragma section(".CRT$XTZ", read, long)
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[95894] | 61 | # define IPRT_COMPILER_TERM_CALLBACK(a_fn) \
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| 62 | __declspec(allocate(".CRT$XTAA")) PFNRT RT_CONCAT(g_rtVccTermCallback_, a_fn) = a_fn
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[95834] | 63 | #endif
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| 64 |
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| 65 | #ifdef IPRT_COMPILER_VCC_WITH_CPP_INIT_SECTIONS
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| 66 | # pragma warning(disable:5247) /* warning C5247: section '.CRT$XCA' is reserved for C++ dynamic initialization. Manually creating the section will interfere with C++ dynamic initialization and may lead to undefined behavior */
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| 67 | # pragma warning(disable:5248) /* warning C5248: section '.CRT$XCA' is reserved for C++ dynamic initialization. Variables manually put into the section may be optimized out and their order relative to compiler generated dynamic initializers is unspecified */
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| 68 | # pragma section(".CRT$XCA", read, long) /* start C++ initializers */
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| 69 | # pragma section(".CRT$XCAA", read, long)
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| 70 | # pragma section(".CRT$XCZ", read, long)
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| 71 | #endif
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| 72 |
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| 73 | #ifdef IPRT_COMPILER_VCC_WITH_RTC_INIT_TERM_SECTIONS
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| 74 | # pragma section(".rtc$IAA", read, long) /* start RTC initializers */
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| 75 | # pragma section(".rtc$IZZ", read, long)
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| 76 |
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| 77 | # pragma section(".rtc$TAA", read, long) /* start RTC terminators */
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| 78 | # pragma section(".rtc$TZZ", read, long)
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| 79 | #endif
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| 80 |
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| 81 | #ifdef IPRT_COMPILER_VCC_WITH_TLS_CALLBACK_SECTIONS
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| 82 | # pragma section(".CRT$XLA", read, long) /* start TLS callback */
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| 83 | # pragma section(".CRT$XLAA", read, long)
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| 84 | # pragma section(".CRT$XLZ", read, long)
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| 85 |
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| 86 | /** @todo what about .CRT$XDA? Dynamic TLS initializers. */
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| 87 | #endif
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| 88 |
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| 89 | #ifdef IPRT_COMPILER_VCC_WITH_TLS_DATA_SECTIONS
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| 90 | # pragma section(".tls", read, long) /* start TLS callback */
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| 91 | # pragma section(".tls$ZZZ", read, long)
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| 92 |
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| 93 | /** @todo what about .CRT$XDA? Dynamic TLS initializers. */
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| 94 | #endif
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| 95 |
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| 96 | /** @} */
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| 97 |
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| 98 |
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| 99 | RT_C_DECLS_BEGIN
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| 100 |
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[95845] | 101 | extern unsigned _fltused;
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| 102 |
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[95870] | 103 | void rtVccInitSecurityCookie(void) RT_NOEXCEPT;
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[96588] | 104 | void rtVccWinInitBssOnNt3(void *pvImageBase) RT_NOEXCEPT;
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[95870] | 105 | void rtVccWinInitProcExecPath(void) RT_NOEXCEPT;
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[95834] | 106 | int rtVccInitializersRunInit(void) RT_NOEXCEPT;
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| 107 | void rtVccInitializersRunTerm(void) RT_NOEXCEPT;
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[95870] | 108 | void rtVccTermRunAtExit(void) RT_NOEXCEPT;
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[95834] | 109 |
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[97866] | 110 | struct _CONTEXT;
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| 111 | void rtVccCheckContextFailed(struct _CONTEXT *pCpuCtx);
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[95845] | 112 |
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[97866] | 113 | #ifdef _CONTROL_FLOW_GUARD
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| 114 | DECLASM(void) __guard_check_icall_nop(uintptr_t); /**< nocrt-guard-win.asm */
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| 115 | #endif
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| 116 | extern uintptr_t __guard_check_icall_fptr; /**< nocrt-guard-win.asm */
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| 117 |
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[95834] | 118 | RT_C_DECLS_END
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| 119 |
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| 120 |
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[97866] | 121 | /**
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| 122 | * Checks if CFG is currently active.
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| 123 | *
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| 124 | * This requires CFG to be enabled at compile time, supported by the host OS
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| 125 | * version and activated by the module loader.
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| 126 | *
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| 127 | * @returns true if CFG is active, false if not.
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| 128 | */
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| 129 | DECLINLINE(bool) rtVccIsGuardICallChecksActive(void)
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| 130 | {
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| 131 | #ifdef _CONTROL_FLOW_GUARD
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| 132 | return __guard_check_icall_fptr != (uintptr_t)__guard_check_icall_nop;
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| 133 | #else
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| 134 | return false;
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| 135 | #endif
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| 136 | }
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| 137 |
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| 138 |
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| 139 | #ifdef IPRT_INCLUDED_nt_nt_h
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| 140 | /**
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| 141 | * Checks if a pointer is on the officially registered stack or not.
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| 142 | *
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| 143 | * @returns true if on the official stack, false if not.
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| 144 | * @param uStackPtr The pointer to check.
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| 145 | */
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| 146 | DECLINLINE(bool) rtVccIsPointerOnTheStack(uintptr_t uStackPtr)
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| 147 | {
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| 148 | PNT_TIB const pTib = (PNT_TIB)RTNtCurrentTeb();
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| 149 | return uStackPtr <= (uintptr_t)pTib->StackBase
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| 150 | && uStackPtr >= (uintptr_t)pTib->StackLimit;
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| 151 | }
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| 152 | #endif
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| 153 |
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[95834] | 154 | #endif /* !IPRT_INCLUDED_INTERNAL_compiler_vcc_h */
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| 155 |
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