/usr/lib/gcc/x86_64-linux-gnu/5/include/d/rt/memory.d is in libphobos-5-dev 5.5.0-12ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | /**
* This module tells the garbage collector about the static data and bss segments,
* so the GC can scan them for roots. It does not deal with thread local static data.
*
* Copyright: Copyright Digital Mars 2000 - 2012.
* License: Distributed under the
* $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0).
* (See accompanying file LICENSE)
* Authors: Walter Bright, Sean Kelly
* Source: $(DRUNTIMESRC src/rt/_memory.d)
*/
/* NOTE: This file has been patched from the original DMD distribution to
* work with the GDC compiler.
*/
module rt.memory;
import core.memory;
private
{
version( MinGW )
{
extern (C)
{
extern __gshared
{
// We need to alias __data_*__ and __bss_*__ to correct
// symbols on Win64. Binutils exports the same symbol for
// both Win32 and Win64, where-as the ABI says no _ should be
// prefixed.
version (X86)
{
int _data_start__;
int _data_end__;
int _bss_start__;
int _bss_end__;
}
else version (X86_64)
{
pragma(mangle, "__data_start__") int _data_start__;
pragma(mangle, "__data_end__") int _data_end__;
pragma(mangle, "__bss_start__") int _bss_start__;
pragma(mangle, "__bss_end__") int _bss_end__;
}
}
}
}
else version( Win32 )
{
extern (C)
{
extern __gshared
{
int _xi_a; // &_xi_a just happens to be start of data segment
int _edata; // &_edata is start of BSS segment
int _end; // &_end is past end of BSS
}
}
}
else version( Win64 )
{
extern (C)
{
extern __gshared
{
int __xc_a; // &__xc_a just happens to be start of data segment
//int _edata; // &_edata is start of BSS segment
void* _deh_beg; // &_deh_beg is past end of BSS
}
}
}
else version( linux )
{
extern (C)
{
extern __gshared
{
int __data_start;
int end;
}
}
}
else version( OSX )
{
import core.sys.osx.mach.dyld;
import core.sys.osx.mach.getsect;
struct Section
{
immutable(char)* segment;
immutable(char)* section;
}
immutable Section[3] dataSections = [
Section(SEG_DATA, SECT_DATA),
Section(SEG_DATA, SECT_BSS),
Section(SEG_DATA, SECT_COMMON)
];
}
else version( FreeBSD )
{
extern (C)
{
extern __gshared
{
size_t etext;
size_t _end;
}
}
version (X86_64)
{
extern (C)
{
extern __gshared
{
size_t _deh_end;
size_t __progname;
}
}
}
}
else version( Solaris )
{
extern (C)
{
extern __gshared
{
int __dso_handle;
int _end;
}
}
}
}
void initStaticDataGC()
{
version( MinGW )
{
GC.addRange( &_data_start__, cast(size_t) &_bss_end__ - cast(size_t) &_data_start__ );
}
else version( Win32 )
{
GC.addRange( &_xi_a, cast(size_t) &_end - cast(size_t) &_xi_a );
}
else version( Win64 )
{
GC.addRange( &__xc_a, cast(size_t) &_deh_beg - cast(size_t) &__xc_a );
}
else version( linux )
{
GC.addRange( &__data_start, cast(size_t) &end - cast(size_t) &__data_start );
}
else version( OSX )
{
static extern(C) void scanSections(in mach_header* hdr, intptr_t slide)
{
foreach (s; dataSections)
{
// Should probably be decided at runtime by actual image bitness
// (mach_header.magic) rather than at build-time?
version (D_LP64)
auto sec = getsectbynamefromheader_64(
cast(mach_header_64*)hdr, s.segment, s.section);
else
auto sec = getsectbynamefromheader(hdr, s.segment, s.section);
if (sec !is null && sec.size > 0)
GC.addRange(cast(void*)(sec.addr + slide),
cast(size_t)sec.size);
}
}
_dyld_register_func_for_add_image(&scanSections);
}
else version( FreeBSD )
{
version (X86_64)
{
GC.addRange( &etext, cast(size_t) &_deh_end - cast(size_t) &etext );
GC.addRange( &__progname, cast(size_t) &_end - cast(size_t) &__progname );
}
else
{
GC.addRange( &etext, cast(size_t) &_end - cast(size_t) &etext );
}
}
else version( Solaris )
{
GC.addRange(&__dso_handle, cast(size_t)&_end - cast(size_t)&__dso_handle);
}
else
{
static assert( false, "Operating system not supported." );
}
}
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