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      1 /**
      2  *
      3  * Copyright: Copyright Digital Mars 2000 - 2012.
      4  * License: Distributed under the
      5  *      $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0).
      6  *    (See accompanying file LICENSE)
      7  * Authors:   Walter Bright, Sean Kelly, Martin Nowak
      8  * Source: $(DRUNTIMESRC rt/_sections.d)
      9  */
     10 
     11 /* NOTE: This file has been patched from the original DMD distribution to
     12  * work with the GDC compiler.
     13  */
     14 module rt.sections;
     15 
     16 version (OSX)
     17     version = Darwin;
     18 else version (iOS)
     19     version = Darwin;
     20 else version (TVOS)
     21     version = Darwin;
     22 else version (WatchOS)
     23     version = Darwin;
     24 
     25 version (GNU)
     26     public import gcc.sections;
     27 else version (CRuntime_Glibc)
     28     public import rt.sections_elf_shared;
     29 else version (CRuntime_Musl)
     30     public import rt.sections_elf_shared;
     31 else version (FreeBSD)
     32     public import rt.sections_elf_shared;
     33 else version (NetBSD)
     34     public import rt.sections_elf_shared;
     35 else version (OpenBSD)
     36 {
     37     /**
     38      * OpenBSD is missing support needed for elf_shared.
     39      * See the top of sections_solaris.d for more info.
     40      */
     41 
     42     public import rt.sections_solaris;
     43 }
     44 else version (DragonFlyBSD)
     45     public import rt.sections_elf_shared;
     46 else version (Solaris)
     47     public import rt.sections_solaris;
     48 else version (Darwin)
     49 {
     50     version (X86_64)
     51         public import rt.sections_osx_x86_64;
     52     else version (X86)
     53         public import rt.sections_osx_x86;
     54     else
     55         static assert(0, "unimplemented");
     56 }
     57 else version (CRuntime_DigitalMars)
     58     public import rt.sections_win32;
     59 else version (CRuntime_Microsoft)
     60     public import rt.sections_win64;
     61 else version (CRuntime_Bionic)
     62     public import rt.sections_android;
     63 else version (CRuntime_UClibc)
     64     public import rt.sections_elf_shared;
     65 else
     66     static assert(0, "unimplemented");
     67 
     68 import rt.deh, rt.minfo;
     69 
     70 template isSectionGroup(T)
     71 {
     72     enum isSectionGroup =
     73         is(typeof(T.init.modules) == immutable(ModuleInfo*)[]) &&
     74         is(typeof(T.init.moduleGroup) == ModuleGroup) &&
     75         (!is(typeof(T.init.ehTables)) || is(typeof(T.init.ehTables) == immutable(FuncTable)[])) &&
     76         is(typeof(T.init.gcRanges) == void[][]) &&
     77         is(typeof({ foreach (ref T; T) {}})) &&
     78         is(typeof({ foreach_reverse (ref T; T) {}}));
     79 }
     80 static assert(isSectionGroup!(SectionGroup));
     81 static assert(is(typeof(&initSections) == void function() nothrow @nogc));
     82 static assert(is(typeof(&finiSections) == void function() nothrow @nogc));
     83 static assert(is(typeof(&initTLSRanges) RT == return) &&
     84               is(typeof(&initTLSRanges) == RT function() nothrow @nogc) &&
     85               is(typeof(&finiTLSRanges) == void function(RT) nothrow @nogc) &&
     86               is(typeof(&scanTLSRanges) == void function(RT, scope void delegate(void*, void*) nothrow) nothrow));
     87 
     88 version (Shared)
     89 {
     90     static assert(is(typeof(&pinLoadedLibraries) == void* function() nothrow @nogc));
     91     static assert(is(typeof(&unpinLoadedLibraries) == void function(void*) nothrow @nogc));
     92     static assert(is(typeof(&inheritLoadedLibraries) == void function(void*) nothrow @nogc));
     93     static assert(is(typeof(&cleanupLoadedLibraries) == void function() nothrow @nogc));
     94 }
     95 
     96 bool scanDataSegPrecisely() nothrow @nogc
     97 {
     98     import rt.config;
     99     string opt = rt_configOption("scanDataSeg");
    100     switch (opt)
    101     {
    102         case "":
    103         case "conservative":
    104             return false;
    105         case "precise":
    106             return true;
    107         default:
    108             __gshared err = new Error("DRT invalid scanDataSeg option, must be 'precise' or 'conservative'");
    109             throw err;
    110     }
    111 }
    112