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 "alias.h"
  28 #include "symtab.h"
  29 #include "options.h"
  30 #include "tree.h"
  31 #include "fold-const.h"
  32 #include "stringpool.h"
  33 #include "stor-layout.h"
  34 #include "java-tree.h"
  35 #include "jcf.h"
  36 #include "diagnostic-core.h"
  37 #include "toplev.h"
  38 #include "parse.h"
  39 #include "tm.h"
  40 #include "hard-reg-set.h"
  41 #include "function.h"
  42 #include "tree-iterator.h"
  43 #include "plugin-api.h"
  44 #include "ipa-ref.h"
  45 #include "cgraph.h"
  46
  47 /* A list of all the resources files.  */
  48 static GTY(()) vec<tree, va_gc> *resources;
  49
  50 void
  51 compile_resource_data (const char *name, const char *buffer, int length)
  52 {
  53   tree rtype, field = NULL_TREE, data_type, rinit, data, decl;
  54   vec<constructor_elt, va_gc> *v = NULL;
  55
  56   data_type = build_prim_array_type (unsigned_byte_type_node,
  57                                      strlen (name) + length);
  58   rtype = make_node (RECORD_TYPE);
  59   PUSH_FIELD (input_location,
  60               rtype, field, "name_length", unsigned_int_type_node);
  61   PUSH_FIELD (input_location,
  62               rtype, field, "resource_length", unsigned_int_type_node);
  63   PUSH_FIELD (input_location, rtype, field, "data", data_type);
  64   FINISH_RECORD (rtype);
  65   START_RECORD_CONSTRUCTOR (v, rtype);
  66   PUSH_FIELD_VALUE (v, "name_length",
  67                     build_int_cst (NULL_TREE, strlen (name)));
  68   PUSH_FIELD_VALUE (v, "resource_length",
  69                     build_int_cst (NULL_TREE, length));
  70   data = build_string (strlen(name) + length, buffer);
  71   TREE_TYPE (data) = data_type;
  72   PUSH_FIELD_VALUE (v, "data", data);
  73   FINISH_RECORD_CONSTRUCTOR (rinit, v, rtype);
  74   TREE_CONSTANT (rinit) = 1;
  75
  76   decl = build_decl (input_location,
  77                      VAR_DECL, java_mangle_resource_name (name), rtype);
  78   TREE_STATIC (decl) = 1;
  79   TREE_PUBLIC (decl) = 1;
  80   java_hide_decl (decl);
  81   DECL_ARTIFICIAL (decl) = 1;
  82   DECL_IGNORED_P (decl) = 1;
  83   TREE_READONLY (decl) = 1;
  84   TREE_THIS_VOLATILE (decl) = 0;
  85   DECL_INITIAL (decl) = rinit;
  86   layout_decl (decl, 0);
  87   pushdecl (decl);
  88   rest_of_decl_compilation (decl, global_bindings_p (), 0);
  89   varpool_node::finalize_decl (decl);
  90
  91   vec_safe_push (resources, decl);
  92 }
  93
  94 void
  95 write_resource_constructor (tree *list_p)
  96 {
  97   tree decl, t, register_resource_fn;
  98   unsigned ix;
  99
 100   if (resources == NULL)
 101     return;
 102
 103   t = build_function_type_list (void_type_node, ptr_type_node, NULL);
 104   t = build_decl (input_location,
 105                   FUNCTION_DECL, get_identifier ("_Jv_RegisterResource"), t);
 106   TREE_PUBLIC (t) = 1;
 107   DECL_EXTERNAL (t) = 1;
 108   register_resource_fn = t;
 109
 110   /* Write out entries in the same order in which they were defined.  */
 111   FOR_EACH_VEC_ELT (*resources, ix, decl)
 112     {
 113       t = build_fold_addr_expr (decl);
 114       t = build_call_expr (register_resource_fn, 1, t);
 115       append_to_statement_list (t, list_p);
 116     }
 117 }
 118
 119 /* Generate a byte array representing the contents of FILENAME.  The
 120    array is assigned a unique local symbol.  The array represents a
 121    compiled Java resource, which is accessed by the runtime using
 122    NAME.  */
 123 void
 124 compile_resource_file (const char *name, const char *filename)
 125 {
 126   struct stat stat_buf;
 127   int fd;
 128   char *buffer;
 129
 130   fd = open (filename, O_RDONLY | O_BINARY);
 131   if (fd < 0)
 132     {
 133       perror ("Failed to read resource file");
 134       return;
 135     }
 136   if (fstat (fd, &stat_buf) != 0
 137       || ! S_ISREG (stat_buf.st_mode))
 138     {
 139       perror ("Could not figure length of resource file");
 140       return;
 141     }
 142   buffer = XNEWVEC (char, strlen (name) + stat_buf.st_size);
 143   strcpy (buffer, name);
 144   read (fd, buffer + strlen (name), stat_buf.st_size);
 145   close (fd);
 146
 147   compile_resource_data (name, buffer, stat_buf.st_size);
 148 }
 149
 150 #include "gt-java-resource.h"