gcc/d/dmd/gluelayer.d

   1 /**
   2  * Declarations for back-end functions that the front-end invokes.
   3  *
   4  * This 'glues' either the DMC or GCC back-end to the front-end.
   5  *
   6  * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
   7  * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
   8  * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
   9  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/gluelayer.d, _gluelayer.d)
  10  * Documentation:  https://dlang.org/phobos/dmd_gluelayer.html
  11  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/gluelayer.d
  12  */
  13
  14 module dmd.gluelayer;
  15
  16 import dmd.dmodule;
  17 import dmd.dscope;
  18 import dmd.dsymbol;
  19 import dmd.mtype;
  20 import dmd.statement;
  21 import dmd.root.file;
  22
  23 version (NoBackend)
  24 {
  25     struct Symbol;
  26     struct code;
  27     struct block;
  28     struct Blockx;
  29     struct elem;
  30     struct TYPE;
  31     alias type = TYPE;
  32
  33     extern (C++)
  34     {
  35         // iasm
  36         Statement asmSemantic(AsmStatement s, Scope* sc)
  37         {
  38             sc.func.hasReturnExp = 8;
  39             return null;
  40         }
  41
  42         // toir
  43         void toObjFile(Dsymbol ds, bool multiobj)   {}
  44
  45         extern(C++) abstract class ObjcGlue
  46         {
  47             static void initialize() {}
  48         }
  49     }
  50 }
  51 else version (MARS)
  52 {
  53     public import dmd.backend.cc : block, Blockx, Symbol;
  54     public import dmd.backend.type : type;
  55     public import dmd.backend.el : elem;
  56     public import dmd.backend.code_x86 : code;
  57
  58     extern (C++)
  59     {
  60         Statement asmSemantic(AsmStatement s, Scope* sc);
  61
  62         void toObjFile(Dsymbol ds, bool multiobj);
  63
  64         extern(C++) abstract class ObjcGlue
  65         {
  66             static void initialize();
  67         }
  68     }
  69 }
  70 else version (IN_GCC)
  71 {
  72     extern (C++) union tree_node;
  73
  74     alias Symbol = tree_node;
  75     alias code = tree_node;
  76     alias type = tree_node;
  77
  78     extern (C++)
  79     {
  80         Statement asmSemantic(AsmStatement s, Scope* sc);
  81         void toObjFile(Dsymbol ds, bool multiobj);
  82     }
  83
  84     // stubs
  85     extern(C++) abstract class ObjcGlue
  86     {
  87         static void initialize() {}
  88     }
  89 }
  90 else
  91     static assert(false, "Unsupported compiler backend");