gcc/java/resource.c

   1 /* Functions related to building resource files.
   2    Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   3    2007, 2008 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.
  20
  21 Java and all Java-based marks are trademarks or registered trademarks
  22 of Sun Microsystems, Inc. in the United States and other countries.
  23 The Free Software Foundation is independent of Sun Microsystems, Inc.  */
  24
  25 #include "config.h"
  26 #include "system.h"
  27 #include "coretypes.h"
  28 #include "tm.h"
  29 #include "tree.h"
  30 #include "rtl.h"
  31 #include "flags.h"
  32 #include "java-tree.h"
  33 #include "jcf.h"
  34 #include "obstack.h"
  35 #include "toplev.h"
  36 #include "output.h"
  37 #include "parse.h"
  38 #include "function.h"
  39 #include "ggc.h"
  40 #include "stdio.h"
  41 #include "target.h"
  42 #include "expr.h"
  43 #include "tree-iterator.h"
  44 #include "cgraph.h"
  45
  46 /* DOS brain-damage */
  47 #ifndef O_BINARY
  48 #define O_BINARY 0 /* MS-DOS brain-damage */
  49 #endif
  50
  51 /* A list of all the resources files.  */
  52 static GTY(()) tree resources = NULL;
  53
  54 void
  55 compile_resource_data (const char *name, const char *buffer, int length)
  56 {
  57   tree rtype, field = NULL_TREE, data_type, rinit, data, decl;
  58
  59   data_type = build_prim_array_type (unsigned_byte_type_node,
  60                                      strlen (name) + length);
  61   rtype = make_node (RECORD_TYPE);
  62   PUSH_FIELD (input_location,
  63               rtype, field, "name_length", unsigned_int_type_node);
  64   PUSH_FIELD (input_location,
  65               rtype, field, "resource_length", unsigned_int_type_node);
  66   PUSH_FIELD (input_location, rtype, field, "data", data_type);
  67   FINISH_RECORD (rtype);
  68   START_RECORD_CONSTRUCTOR (rinit, rtype);
  69   PUSH_FIELD_VALUE (rinit, "name_length",
  70                     build_int_cst (NULL_TREE, strlen (name)));
  71   PUSH_FIELD_VALUE (rinit, "resource_length",
  72                     build_int_cst (NULL_TREE, length));
  73   data = build_string (strlen(name) + length, buffer);
  74   TREE_TYPE (data) = data_type;
  75   PUSH_FIELD_VALUE (rinit, "data", data);
  76   FINISH_RECORD_CONSTRUCTOR (rinit);
  77   TREE_CONSTANT (rinit) = 1;
  78
  79   decl = build_decl (input_location,
  80                      VAR_DECL, java_mangle_resource_name (name), rtype);
  81   TREE_STATIC (decl) = 1;
  82   TREE_PUBLIC (decl) = 1;
  83   java_hide_decl (decl);
  84   DECL_ARTIFICIAL (decl) = 1;
  85   DECL_IGNORED_P (decl) = 1;
  86   TREE_READONLY (decl) = 1;
  87   TREE_THIS_VOLATILE (decl) = 0;
  88   DECL_INITIAL (decl) = rinit;
  89   layout_decl (decl, 0);
  90   pushdecl (decl);
  91   rest_of_decl_compilation (decl, global_bindings_p (), 0);
  92   varpool_finalize_decl (decl);
  93
  94   resources = tree_cons (NULL_TREE, decl, resources);
  95 }
  96
  97 void
  98 write_resource_constructor (tree *list_p)
  99 {
 100   tree iter, t, register_resource_fn;
 101
 102   if (resources == NULL)
 103     return;
 104
 105   t = build_function_type_list (void_type_node, ptr_type_node, NULL);
 106   t = build_decl (input_location,
 107                   FUNCTION_DECL, get_identifier ("_Jv_RegisterResource"), t);
 108   TREE_PUBLIC (t) = 1;
 109   DECL_EXTERNAL (t) = 1;
 110   register_resource_fn = t;
 111
 112   /* Write out entries in the same order in which they were defined.  */
 113   for (iter = nreverse (resources); iter ; iter = TREE_CHAIN (iter))
 114     {
 115       t = build_fold_addr_expr (TREE_VALUE (iter));
 116       t = build_call_expr (register_resource_fn, 1, t);
 117       append_to_statement_list (t, list_p);
 118     }
 119 }
 120
 121 /* Generate a byte array representing the contents of FILENAME.  The
 122    array is assigned a unique local symbol.  The array represents a
 123    compiled Java resource, which is accessed by the runtime using
 124    NAME.  */
 125 void
 126 compile_resource_file (const char *name, const char *filename)
 127 {
 128   struct stat stat_buf;
 129   int fd;
 130   char *buffer;
 131
 132   fd = open (filename, O_RDONLY | O_BINARY);
 133   if (fd < 0)
 134     {
 135       perror ("Failed to read resource file");
 136       return;
 137     }
 138   if (fstat (fd, &stat_buf) != 0
 139       || ! S_ISREG (stat_buf.st_mode))
 140     {
 141       perror ("Could not figure length of resource file");
 142       return;
 143     }
 144   buffer = XNEWVEC (char, strlen (name) + stat_buf.st_size);
 145   strcpy (buffer, name);
 146   read (fd, buffer + strlen (name), stat_buf.st_size);
 147   close (fd);
 148
 149   compile_resource_data (name, buffer, stat_buf.st_size);
 150 }
 151
 152 #include "gt-java-resource.h"