libjava/libgcj_bc.c

   1 /* libgcj_bc.c  */
   2
   3 /* Copyright (C) 2006, 2009 Free Software Foundation
   4
   5    This file is part of libgcj.
   6
   7 This software is copyrighted work licensed under the terms of the
   8 Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
   9 details.  */
  10
  11 /* This file is used to build libgcj_bc.so, a 'fake' library that is
  12    used at link time only. It ensures that binaries built with the
  13    BC-ABI link against a constant SONAME. This way, BC-ABI binaries
  14    continue to work if the SONAME underlying libgcj.so changes.  */
  15
  16 #include <stdlib.h>
  17 #include <stdio.h>
  18
  19 static void print_wrong_lib_msg ()
  20 {
  21   fprintf (stderr, "libgcj error: \
  22 This is libgcj_bc.so, a fake library used only for linking.\n\
  23 Please create a symlink from libgcj_bc.so.1 to the real libgcj.so.\n");
  24   exit (1);
  25 }
  26
  27 /* Functions called from code generated by gcj.  */
  28
  29 void _Jv_AllocObject () {}
  30 void _Jv_AllocObjectNoFinalizer () {}
  31 void _Jv_CheckArrayStore () {}
  32 void _Jv_CheckCast () {}
  33 void _Jv_InitClass () {}
  34 void _Jv_IsInstanceOf () {}
  35 void _Jv_LookupInterfaceMethod () {}
  36 void _Jv_LookupInterfaceMethodIdx () {}
  37 void _Jv_MonitorEnter () {}
  38 void _Jv_MonitorExit () {}
  39 void _Jv_NewMultiArray () {}
  40 void _Jv_NewObjectArray () {}
  41 void _Jv_NewPrimArray () {}
  42 void _Jv_RegisterResource () {}
  43 void _Jv_ResolvePoolEntry () {}
  44 void _Jv_Throw () {}
  45 void _Jv_ThrowAbstractMethodError () {}
  46 void _Jv_ThrowBadArrayIndex () {}
  47 void _Jv_ThrowNoSuchFieldError () {}
  48 void _Jv_ThrowNullPointerException () {}
  49 void __gcj_personality_v0 () {}
  50
  51 void _Jv_RegisterClasses ()
  52 {
  53   print_wrong_lib_msg ();
  54 }
  55
  56 void _Jv_RegisterNewClasses ()
  57 {
  58   print_wrong_lib_msg ();
  59 }
  60
  61 /* Symbols used by jvgenmain (-fmain).  */
  62
  63 void JvRunMain () {}
  64 void JvRunMainName () {}
  65 const char **_Jv_Compiler_Properties;
  66
  67 /* Functions used by -fjni.  */
  68
  69 void _Jv_GetJNIEnvNewFrame () {}
  70 void _Jv_LookupJNIMethod () {}
  71 void _Jv_UnwrapJNIweakReference () {}
  72 void _Jv_JNI_PopSystemFrame () {}
  73
  74
  75 /* Checked divide (-fuse-divide-subroutine).  */
  76
  77 void _Jv_divI () {}
  78 void _Jv_divJ () {}
  79 void _Jv_remI () {}
  80 void _Jv_remJ () {}
  81
  82
  83 /* CNI Functions.  */
  84
  85 void _Jv_AllocBytes () {}
  86 void _Jv_AllocString () {}
  87 void _Jv_AttachCurrentThread () {}
  88 void _Jv_AttachCurrentThreadAsDaemon () {}
  89 void _Jv_CreateJavaVM () {}
  90 void _Jv_DetachCurrentThread () {}
  91 void _Jv_Free () {}
  92 void _Jv_GetStringUTFLength () {}
  93 void _Jv_GetStringUTFRegion () {}
  94 void _Jv_Malloc () {}
  95 void _Jv_NewString () {}
  96 void _Jv_NewStringLatin1 () {}
  97 void _Jv_NewStringUTF () {}
  98 void _Jv_Realloc () {}
  99
 100
 101 /* Classes for primitive types.  */
 102
 103 #define DECLARE_PRIM_TYPE(NAME)                 \
 104   int _Jv_##NAME##Class;
 105
 106 DECLARE_PRIM_TYPE(byte)
 107 DECLARE_PRIM_TYPE(short)
 108 DECLARE_PRIM_TYPE(int)
 109 DECLARE_PRIM_TYPE(long)
 110 DECLARE_PRIM_TYPE(boolean)
 111 DECLARE_PRIM_TYPE(char)
 112 DECLARE_PRIM_TYPE(float)
 113 DECLARE_PRIM_TYPE(double)
 114 DECLARE_PRIM_TYPE(void)
 115
 116
 117 /* Force executable to export __data_start et al.  */
 118
 119 #pragma weak __data_start
 120 extern int __data_start[];
 121 #pragma weak data_start
 122 extern int data_start[];
 123 #pragma weak _end
 124 extern int _end[];
 125 static void *dummy[] __attribute__((used)) = {__data_start, data_start, _end};