1 | /* $Id: initializers-c-cpp-vcc.cpp 95834 2022-07-26 14:46:59Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - Visual C++ Compiler - C & C++ Initializers and Terminators.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2022 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.215389.xyz. 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 | #define IPRT_COMPILER_VCC_WITH_C_INIT_TERM_SECTIONS
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32 | #define IPRT_COMPILER_VCC_WITH_CPP_INIT_SECTIONS
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33 | #include "internal/compiler-vcc.h"
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34 |
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35 |
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36 | /*********************************************************************************************************************************
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37 | * Structures and Typedefs *
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38 | *********************************************************************************************************************************/
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39 | typedef void (__cdecl *PFNVCINITTERM)(void);
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40 | typedef int (__cdecl *PFNVCINITTERMRET)(void);
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41 |
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42 |
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43 | /*********************************************************************************************************************************
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44 | * Global Variables *
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45 | *********************************************************************************************************************************/
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46 | /** @name Initializer arrays.
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47 | *
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48 | * The important thing here are the section names, the linker wi.
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49 | *
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50 | * @{ */
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51 | /** Start of the C initializer array. */
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52 | __declspec(allocate(".CRT$XIA")) PFNVCINITTERMRET g_apfnRTVccInitializers_C_Start = NULL;
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53 | /** End of the C initializer array. */
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54 | __declspec(allocate(".CRT$XIZ")) PFNVCINITTERMRET g_apfnRTVccInitializers_C_End = NULL;
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55 |
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56 | /** Start of the C pre-terminator array. */
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57 | __declspec(allocate(".CRT$XPA")) PFNVCINITTERM g_apfnRTVccEarlyTerminators_C_Start = NULL;
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58 | /** End of the C pre-terminator array. */
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59 | __declspec(allocate(".CRT$XPZ")) PFNVCINITTERM g_apfnRTVccEarlyTerminators_C_End = NULL;
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60 |
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61 | /** Start of the C terminator array. */
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62 | __declspec(allocate(".CRT$XTA")) PFNVCINITTERM g_apfnRTVccTerminators_C_Start = NULL;
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63 | /** End of the C terminator array. */
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64 | __declspec(allocate(".CRT$XTZ")) PFNVCINITTERM g_apfnRTVccTerminators_C_End = NULL;
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65 |
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66 | /** Start of the C++ initializer array. */
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67 | __declspec(allocate(".CRT$XCA")) PFNVCINITTERM g_apfnRTVccInitializers_Cpp_Start = NULL;
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68 | /** End of the C++ initializer array. */
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69 | __declspec(allocate(".CRT$XCZ")) PFNVCINITTERM g_apfnRTVccInitializers_Cpp_End = NULL;
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70 |
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71 |
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72 | /* Tell the linker to merge the .CRT* sections into .rdata */
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73 | #pragma comment(linker, "/merge:.CRT=.rdata ")
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74 | /** @} */
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75 |
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76 |
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77 | /**
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78 | * Runs the C and C++ initializers.
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79 | *
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80 | * @returns 0 on success, non-zero return from C initalizer on failure.
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81 | */
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82 | int rtVccInitializersRunInit(void)
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83 | {
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84 | /*
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85 | * Run the C initializers first.
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86 | */
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87 | for (PFNVCINITTERMRET *ppfn = &g_apfnRTVccInitializers_C_Start;
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88 | (uintptr_t)ppfn < (uintptr_t)&g_apfnRTVccInitializers_C_End;
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89 | ppfn++)
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90 | {
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91 | PFNVCINITTERMRET const pfn = *ppfn;
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92 | if (pfn)
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93 | {
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94 | int const rc = pfn();
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95 | if (RT_LIKELY(rc == 0))
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96 | { /* likely */ }
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97 | else
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98 | return rc;
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99 | }
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100 | }
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101 |
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102 | /*
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103 | * Run the C++ initializers.
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104 | */
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105 | for (PFNVCINITTERM *ppfn = &g_apfnRTVccInitializers_Cpp_Start;
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106 | (uintptr_t)ppfn < (uintptr_t)&g_apfnRTVccInitializers_Cpp_End;
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107 | ppfn++)
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108 | {
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109 | PFNVCINITTERM const pfn = *ppfn;
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110 | if (pfn)
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111 | pfn();
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112 | }
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113 |
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114 | return 0;
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115 | }
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116 |
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117 |
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118 | /**
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119 | * Runs the C terminator callbacks.
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120 | */
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121 | void rtVccInitializersRunTerm(void)
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122 | {
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123 | /*
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124 | * First the early terminators.
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125 | */
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126 | for (PFNVCINITTERM *ppfn = &g_apfnRTVccEarlyTerminators_C_Start;
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127 | (uintptr_t)ppfn < (uintptr_t)&g_apfnRTVccEarlyTerminators_C_End;
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128 | ppfn++)
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129 | {
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130 | PFNVCINITTERM const pfn = *ppfn;
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131 | if (pfn)
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132 | pfn();
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133 | }
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134 |
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135 | /*
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136 | * Then the real terminator list.
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137 | */
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138 | for (PFNVCINITTERM *ppfn = &g_apfnRTVccTerminators_C_Start;
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139 | (uintptr_t)ppfn < (uintptr_t)&g_apfnRTVccTerminators_C_End;
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140 | ppfn++)
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141 | {
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142 | PFNVCINITTERM const pfn = *ppfn;
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143 | if (pfn)
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144 | pfn();
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145 | }
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146 |
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147 | }
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148 |
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