src/vm/jit/helper.c

   1 /* src/vm/jit/asmhelper.c - code patching helper functions
   2
   3    Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
   4    R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
   5    C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
   6    Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  23    02111-1307, USA.
  24
  25    Contact: cacao@complang.tuwien.ac.at
  26
  27    Authors: Christian Thalinger
  28
  29    Changes:
  30
  31    $Id: helper.c 2955 2005-07-09 13:55:06Z twisti $
  32
  33 */
  34
  35
  36 #include <assert.h>
  37
  38 #include "vm/class.h"
  39 #include "vm/exceptions.h"
  40 #include "vm/initialize.h"
  41 #include "vm/linker.h"
  42 #include "vm/method.h"
  43 #include "vm/references.h"
  44 #include "vm/resolve.h"
  45 #include "vm/stringlocal.h"
  46 #include "vm/jit/asmpart.h"
  47
  48 /* XXX class_resolveclassmethod */
  49 #include "vm/loader.h"
  50
  51
  52 /* helper_resolve_classinfo ****************************************************
  53
  54    This function returns the loaded and resolved class.
  55
  56 *******************************************************************************/
  57
  58 classinfo *helper_resolve_classinfo(constant_classref *cr)
  59 {
  60         classinfo *c;
  61
  62         /* resolve and load the class */
  63
  64         if (!resolve_classref(NULL, cr, resolveEager, true, true, &c)) {
  65                 java_objectheader *xptr;
  66                 java_objectheader *cause;
  67
  68                 /* get the cause */
  69
  70                 cause = *exceptionptr;
  71
  72                 /* convert ClassNotFoundException's to NoClassDefFoundError's */
  73
  74                 if (builtin_instanceof(cause, class_java_lang_ClassNotFoundException)) {
  75                         /* clear exception, because we are calling jit code again */
  76
  77                         *exceptionptr = NULL;
  78
  79                         /* create new error */
  80
  81                         xptr =
  82                                 new_exception_javastring(string_java_lang_NoClassDefFoundError,
  83                                                                                  ((java_lang_Throwable *) cause)->detailMessage);
  84
  85                         /* we had an exception while creating the error */
  86
  87                         if (*exceptionptr)
  88                                 return NULL;
  89
  90                         /* set new exception */
  91
  92                         *exceptionptr = xptr;
  93                 }
  94
  95                 return NULL;
  96         }
  97
  98         /* return the classinfo pointer */
  99
 100         return c;
 101 }
 102
 103
 104 /* helper_resolve_methodinfo ***************************************************
 105
 106    This function returns the loaded and resolved methodinfo of the
 107    passed method.
 108
 109 *******************************************************************************/
 110
 111 methodinfo *helper_resolve_methodinfo(unresolved_method *um)
 112 {
 113         methodinfo *m;
 114
 115         /* resolve the method */
 116
 117         if (!resolve_method(um, resolveEager, &m)) {
 118                 java_objectheader *xptr;
 119                 java_objectheader *cause;
 120
 121                 /* get the cause */
 122
 123                 cause = *exceptionptr;
 124
 125                 /* convert ClassNotFoundException's to NoClassDefFoundError's */
 126
 127                 if (builtin_instanceof(cause, class_java_lang_ClassNotFoundException)) {
 128                         /* clear exception, because we are calling jit code again */
 129
 130                         *exceptionptr = NULL;
 131
 132                         /* create new error */
 133
 134                         xptr =
 135                                 new_exception_javastring(string_java_lang_NoClassDefFoundError,
 136                                                                                  ((java_lang_Throwable *) cause)->detailMessage);
 137
 138                         /* we had an exception while creating the error */
 139
 140                         if (*exceptionptr)
 141                                 return NULL;
 142
 143                         /* set new exception */
 144
 145                         *exceptionptr = xptr;
 146                 }
 147
 148                 return NULL;
 149         }
 150
 151         /* return the methodinfo pointer */
 152
 153         return m;
 154 }
 155
 156
 157 /* helper_resolve_fieldinfo ****************************************************
 158
 159    This function returns the fieldinfo pointer of the passed field.
 160
 161 *******************************************************************************/
 162
 163 void *helper_resolve_fieldinfo(unresolved_field *uf)
 164 {
 165         fieldinfo *fi;
 166
 167         /* resolve the field */
 168
 169         if (!resolve_field(uf, resolveEager, &fi)) {
 170                 java_objectheader *xptr;
 171                 java_objectheader *cause;
 172
 173                 /* get the cause */
 174
 175                 cause = *exceptionptr;
 176
 177                 /* convert ClassNotFoundException's to NoClassDefFoundError's */
 178
 179                 if (builtin_instanceof(cause, class_java_lang_ClassNotFoundException)) {
 180                         /* clear exception, because we are calling jit code again */
 181
 182                         *exceptionptr = NULL;
 183
 184                         /* create new error */
 185
 186                         xptr =
 187                                 new_exception_javastring(string_java_lang_NoClassDefFoundError,
 188                                                                                  ((java_lang_Throwable *) cause)->detailMessage);
 189
 190                         /* we had an exception while creating the error */
 191
 192                         if (*exceptionptr)
 193                                 return NULL;
 194
 195                         /* set new exception */
 196
 197                         *exceptionptr = xptr;
 198                 }
 199
 200                 return NULL;
 201         }
 202
 203         /* return the fieldinfo pointer */
 204
 205         return fi;
 206 }
 207
 208
 209 /*
 210  * These are local overrides for various environment variables in Emacs.
 211  * Please do not remove this and leave it at the end of the file, where
 212  * Emacs will automagically detect them.
 213  * ---------------------------------------------------------------------
 214  * Local variables:
 215  * mode: c
 216  * indent-tabs-mode: t
 217  * c-basic-offset: 4
 218  * tab-width: 4
 219  * End:
 220  * vim:noexpandtab:sw=4:ts=4:
 221  */