gcc/java/resource.c

   1 /* Functions related to building resource files.
   2    Copyright (C) 1996-2015 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.
  19
  20 Java and all Java-based marks are trademarks or registered trademarks
  21 of Sun Microsystems, Inc. in the United States and other countries.
  22 The Free Software Foundation is independent of Sun Microsystems, Inc.  */
  23
  24 #include "config.h"
  25 #include "system.h"
  26 #include "coretypes.h"
  27 #include "hash-set.h"
  28 #include "machmode.h"
  29 #include "vec.h"
  30 #include "double-int.h"
  31 #include "input.h"
  32 #include "alias.h"
  33 #include "symtab.h"
  34 #include "options.h"
  35 #include "wide-int.h"
  36 #include "inchash.h"
  37 #include "tree.h"
  38 #include "fold-const.h"
  39 #include "stringpool.h"
  40 #include "stor-layout.h"
  41 #include "java-tree.h"
  42 #include "jcf.h"
  43 #include "diagnostic-core.h"
  44 #include "toplev.h"
  45 #include "parse.h"
  46 #include "tm.h"
  47 #include "hard-reg-set.h"
  48 #include "input.h"
  49 #include "function.h"
  50 #include "ggc.h"
  51 #include "tree-iterator.h"
  52 #include "hash-map.h"
  53 #include "is-a.h"
  54 #include "plugin-api.h"
  55 #include "ipa-ref.h"
  56 #include "cgraph.h"
  57
  58 /* A list of all the resources files.  */
  59 static GTY(()) vec<tree, va_gc> *resources;
  60
  61 void
  62 compile_resource_data (const char *name, const char *buffer, int length)
  63 {
  64   tree rtype, field = NULL_TREE, data_type, rinit, data, decl;
  65   vec<constructor_elt, va_gc> *v = NULL;
  66
  67   data_type = build_prim_array_type (unsigned_byte_type_node,
  68                                      strlen (name) + length);
  69   rtype = make_node (RECORD_TYPE);
  70   PUSH_FIELD (input_location,
  71               rtype, field, "name_length", unsigned_int_type_node);
  72   PUSH_FIELD (input_location,
  73               rtype, field, "resource_length", unsigned_int_type_node);
  74   PUSH_FIELD (input_location, rtype, field, "data", data_type);
  75   FINISH_RECORD (rtype);
  76   START_RECORD_CONSTRUCTOR (v, rtype);
  77   PUSH_FIELD_VALUE (v, "name_length",
  78                     build_int_cst (NULL_TREE, strlen (name)));
  79   PUSH_FIELD_VALUE (v, "resource_length",
  80                     build_int_cst (NULL_TREE, length));
  81   data = build_string (strlen(name) + length, buffer);
  82   TREE_TYPE (data) = data_type;
  83   PUSH_FIELD_VALUE (v, "data", data);
  84   FINISH_RECORD_CONSTRUCTOR (rinit, v, rtype);
  85   TREE_CONSTANT (rinit) = 1;
  86
  87   decl = build_decl (input_location,
  88                      VAR_DECL, java_mangle_resource_name (name), rtype);
  89   TREE_STATIC (decl) = 1;
  90   TREE_PUBLIC (decl) = 1;
  91   java_hide_decl (decl);
  92   DECL_ARTIFICIAL (decl) = 1;
  93   DECL_IGNORED_P (decl) = 1;
  94   TREE_READONLY (decl) = 1;
  95   TREE_THIS_VOLATILE (decl) = 0;
  96   DECL_INITIAL (decl) = rinit;
  97   layout_decl (decl, 0);
  98   pushdecl (decl);
  99   rest_of_decl_compilation (decl, global_bindings_p (), 0);
 100   varpool_node::finalize_decl (decl);
 101
 102   vec_safe_push (resources, decl);
 103 }
 104
 105 void
 106 write_resource_constructor (tree *list_p)
 107 {
 108   tree decl, t, register_resource_fn;
 109   unsigned ix;
 110
 111   if (resources == NULL)
 112     return;
 113
 114   t = build_function_type_list (void_type_node, ptr_type_node, NULL);
 115   t = build_decl (input_location,
 116                   FUNCTION_DECL, get_identifier ("_Jv_RegisterResource"), t);
 117   TREE_PUBLIC (t) = 1;
 118   DECL_EXTERNAL (t) = 1;
 119   register_resource_fn = t;
 120
 121   /* Write out entries in the same order in which they were defined.  */
 122   FOR_EACH_VEC_ELT (*resources, ix, decl)
 123     {
 124       t = build_fold_addr_expr (decl);
 125       t = build_call_expr (register_resource_fn, 1, t);
 126       append_to_statement_list (t, list_p);
 127     }
 128 }
 129
 130 /* Generate a byte array representing the contents of FILENAME.  The
 131    array is assigned a unique local symbol.  The array represents a
 132    compiled Java resource, which is accessed by the runtime using
 133    NAME.  */
 134 void
 135 compile_resource_file (const char *name, const char *filename)
 136 {
 137   struct stat stat_buf;
 138   int fd;
 139   char *buffer;
 140
 141   fd = open (filename, O_RDONLY | O_BINARY);
 142   if (fd < 0)
 143     {
 144       perror ("Failed to read resource file");
 145       return;
 146     }
 147   if (fstat (fd, &stat_buf) != 0
 148       || ! S_ISREG (stat_buf.st_mode))
 149     {
 150       perror ("Could not figure length of resource file");
 151       return;
 152     }
 153   buffer = XNEWVEC (char, strlen (name) + stat_buf.st_size);
 154   strcpy (buffer, name);
 155   read (fd, buffer + strlen (name), stat_buf.st_size);
 156   close (fd);
 157
 158   compile_resource_data (name, buffer, stat_buf.st_size);
 159 }
 160
 161 #include "gt-java-resource.h"