1 /*
   2  * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 /*
  26  * This is to provide sanity check in jhelper.d which compares SCCS
  27  * versions of generateJvmOffsets.cpp used to create and extract
  28  * contents of __JvmOffsets[] table.
  29  * The __JvmOffsets[] table is located in generated JvmOffsets.cpp.
  30  *
  31  * GENOFFS_SCCS_VER 34
  32  */
  33 
  34 #include "generateJvmOffsets.h"
  35 
  36 /* A workaround for private and protected fields */
  37 #define private   public
  38 #define protected public
  39 
  40 // not on macosx #include <proc_service.h>
  41 #include "code/codeBlob.hpp"
  42 #include "code/nmethod.hpp"
  43 #include "code/pcDesc.hpp"
  44 #include "gc_interface/collectedHeap.hpp"
  45 #include "memory/heap.hpp"
  46 #include "memory/memRegion.hpp"
  47 #include "memory/universe.hpp"
  48 #include "oops/constMethod.hpp"
  49 #include "oops/klass.hpp"
  50 #include "oops/method.hpp"
  51 #include "oops/oop.hpp"
  52 #include "oops/symbol.hpp"
  53 #include "runtime/virtualspace.hpp"
  54 #include "runtime/vmStructs.hpp"
  55 #include "utilities/accessFlags.hpp"
  56 #include "utilities/globalDefinitions.hpp"
  57 
  58 // These are defined somewhere for Solaris
  59 #define PR_MODEL_ILP32 1
  60 #define PR_MODEL_LP64  2
  61 
  62 #ifdef COMPILER1
  63 #ifdef ASSERT
  64 
  65 /*
  66  * To avoid the most part of potential link errors
  67  * we link this program with -z nodefs .
  68  *
  69  * But for 'debug1' and 'fastdebug1' we still have to provide
  70  * a particular workaround for the following symbols bellow.
  71  * It will be good to find out a generic way in the future.
  72  */
  73 
  74 #pragma weak tty
  75 #pragma weak CMSExpAvgFactor
  76 
  77 #if defined(i386) || defined(__i386) || defined(__amd64)
  78 #pragma weak noreg
  79 #endif /* i386 */
  80 
  81 LIR_Opr LIR_OprFact::illegalOpr = (LIR_Opr) 0;
  82 
  83 address StubRoutines::_call_stub_return_address = NULL;
  84 
  85 StubQueue* AbstractInterpreter::_code = NULL;
  86 
  87 #endif /* ASSERT */
  88 #endif /* COMPILER1 */
  89 
  90 #define GEN_OFFS(Type,Name)                             \
  91   switch(gen_variant) {                                 \
  92   case GEN_OFFSET:                                      \
  93     printf("#define OFFSET_%-33s %ld\n",                 \
  94            #Type #Name, offset_of(Type, Name)); \
  95     break;                                              \
  96   case GEN_INDEX:                                       \
  97     printf("#define IDX_OFFSET_%-33s %d\n",             \
  98             #Type #Name, index++);                      \
  99     break;                                              \
 100   case GEN_TABLE:                                       \
 101     printf("\tOFFSET_%s,\n", #Type #Name);              \
 102     break;                                              \
 103   }
 104 
 105 #define GEN_SIZE(Type)                                  \
 106   switch(gen_variant) {                                 \
 107   case GEN_OFFSET:                                      \
 108     printf("#define SIZE_%-35s %ld\n",                   \
 109             #Type, sizeof(Type));                       \
 110     break;                                              \
 111   case GEN_INDEX:                                       \
 112     printf("#define IDX_SIZE_%-35s %d\n",               \
 113             #Type, index++);                            \
 114     break;                                              \
 115   case GEN_TABLE:                                       \
 116     printf("\tSIZE_%s,\n", #Type);                      \
 117     break;                                              \
 118   }
 119 
 120 #define GEN_VALUE(String,Value)                         \
 121   switch(gen_variant) {                                 \
 122   case GEN_OFFSET:                                      \
 123     printf("#define %-40s %d\n", #String, Value);       \
 124     break;                                              \
 125   case GEN_INDEX:                                       \
 126     printf("#define IDX_%-40s %d\n", #String, index++); \
 127     break;                                              \
 128   case GEN_TABLE:                                       \
 129     printf("\t" #String ",\n");                         \
 130     break;                                              \
 131   }
 132 
 133 void gen_prologue(GEN_variant gen_variant) {
 134     const char *suffix;
 135 
 136     switch(gen_variant) {
 137       case GEN_OFFSET: suffix = ".h";        break;
 138       case GEN_INDEX:  suffix = "Index.h";   break;
 139       case GEN_TABLE:  suffix = ".cpp";      break;
 140     }
 141 
 142     printf("/*\n");
 143     printf(" * JvmOffsets%s !!!DO NOT EDIT!!! \n", suffix);
 144     printf(" * The generateJvmOffsets program generates this file!\n");
 145     printf(" */\n\n");
 146     switch(gen_variant) {
 147 
 148       case GEN_OFFSET:
 149       case GEN_INDEX:
 150         break;
 151 
 152       case GEN_TABLE:
 153         printf("#include \"JvmOffsets.h\"\n");
 154         printf("\n");
 155         printf("int __JvmOffsets[] = {\n");
 156         break;
 157     }
 158 }
 159 
 160 void gen_epilogue(GEN_variant gen_variant) {
 161     if (gen_variant != GEN_TABLE) {
 162         return;
 163     }
 164     printf("};\n\n");
 165     return;
 166 }
 167 
 168 int generateJvmOffsets(GEN_variant gen_variant) {
 169   int index = 0;        /* It is used to generate JvmOffsetsIndex.h */
 170   int pointer_size = sizeof(void *);
 171   int data_model = (pointer_size == 4) ? PR_MODEL_ILP32 : PR_MODEL_LP64;
 172 
 173   gen_prologue(gen_variant);
 174 
 175   GEN_VALUE(DATA_MODEL, data_model);
 176   GEN_VALUE(POINTER_SIZE, pointer_size);
 177 #if defined(TIERED)
 178   GEN_VALUE(COMPILER, 3);
 179 #elif COMPILER1
 180   GEN_VALUE(COMPILER, 1);
 181 #elif COMPILER2
 182   GEN_VALUE(COMPILER, 2);
 183 #else
 184   GEN_VALUE(COMPILER, 0);
 185 #endif // COMPILER1 && COMPILER2
 186   printf("\n");
 187 
 188   GEN_OFFS(CollectedHeap, _reserved);
 189   GEN_OFFS(MemRegion, _start);
 190   GEN_OFFS(MemRegion, _word_size);
 191   GEN_SIZE(HeapWord);
 192   printf("\n");
 193 
 194   GEN_OFFS(VMStructEntry, typeName);
 195   GEN_OFFS(VMStructEntry, fieldName);
 196   GEN_OFFS(VMStructEntry, address);
 197   GEN_SIZE(VMStructEntry);
 198   printf("\n");
 199 
 200   GEN_VALUE(MAX_METHOD_CODE_SIZE, max_method_code_size);
 201 #if defined(sparc) || defined(__sparc)
 202   GEN_VALUE(OFFSET_interpreter_frame_method, 2 * pointer_size);     /* L2 in saved window */
 203   GEN_VALUE(OFFSET_interpreter_frame_sender_sp, 13 * pointer_size); /* I5 in saved window */
 204   // Fake value for consistency. It is not going to be used.
 205   GEN_VALUE(OFFSET_interpreter_frame_bcx_offset, 0xFFFF);
 206 #elif defined(i386) || defined(__i386) || defined(__amd64)
 207   GEN_VALUE(OFFSET_interpreter_frame_sender_sp, -1 * pointer_size);
 208   GEN_VALUE(OFFSET_interpreter_frame_method, -3 * pointer_size);
 209   GEN_VALUE(OFFSET_interpreter_frame_bcx_offset, -7 * pointer_size);
 210 #endif
 211 
 212   GEN_OFFS(Klass, _name);
 213   GEN_OFFS(ConstantPool, _pool_holder);
 214   printf("\n");
 215 
 216   GEN_VALUE(OFFSET_HeapBlockHeader_used, (int) offset_of(HeapBlock::Header, _used));
 217   GEN_OFFS(oopDesc, _metadata);
 218   printf("\n");
 219 
 220   GEN_VALUE(AccessFlags_NATIVE, JVM_ACC_NATIVE);
 221   GEN_VALUE(ConstMethod_has_linenumber_table, ConstMethod::_has_linenumber_table);
 222   GEN_OFFS(AccessFlags, _flags);
 223   GEN_OFFS(Symbol, _length);
 224   GEN_OFFS(Symbol, _body);
 225   printf("\n");
 226 
 227   GEN_OFFS(Method, _constMethod);
 228   GEN_OFFS(Method, _constants);
 229   GEN_OFFS(Method, _access_flags);
 230   printf("\n");
 231 
 232   GEN_OFFS(ConstMethod, _flags);
 233   GEN_OFFS(ConstMethod, _code_size);
 234   GEN_OFFS(ConstMethod, _name_index);
 235   GEN_OFFS(ConstMethod, _signature_index);
 236   printf("\n");
 237 
 238   GEN_OFFS(CodeHeap, _memory);
 239   GEN_OFFS(CodeHeap, _segmap);
 240   GEN_OFFS(CodeHeap, _log2_segment_size);
 241   printf("\n");
 242 
 243   GEN_OFFS(VirtualSpace, _low_boundary);
 244   GEN_OFFS(VirtualSpace, _high_boundary);
 245   GEN_OFFS(VirtualSpace, _low);
 246   GEN_OFFS(VirtualSpace, _high);
 247   printf("\n");
 248 
 249   GEN_OFFS(CodeBlob, _name);
 250   GEN_OFFS(CodeBlob, _header_size);
 251   GEN_OFFS(CodeBlob, _content_offset);
 252   GEN_OFFS(CodeBlob, _code_offset);
 253   GEN_OFFS(CodeBlob, _data_offset);
 254   GEN_OFFS(CodeBlob, _frame_size);
 255   printf("\n");
 256 
 257   GEN_OFFS(nmethod, _method);
 258   GEN_OFFS(nmethod, _oops_offset);
 259   GEN_OFFS(nmethod, _scopes_data_offset);
 260   GEN_OFFS(nmethod, _scopes_pcs_offset);
 261   GEN_OFFS(nmethod, _handler_table_offset);
 262   GEN_OFFS(nmethod, _deoptimize_offset);
 263   GEN_OFFS(nmethod, _orig_pc_offset);
 264 
 265   GEN_OFFS(PcDesc, _pc_offset);
 266   GEN_OFFS(PcDesc, _scope_decode_offset);
 267 
 268   printf("\n");
 269 
 270   GEN_OFFS(NarrowPtrStruct, _base);
 271   GEN_OFFS(NarrowPtrStruct, _shift);
 272   printf("\n");
 273 
 274   GEN_VALUE(SIZE_HeapBlockHeader, (int) sizeof(HeapBlock::Header));
 275   GEN_SIZE(oopDesc);
 276   GEN_SIZE(ConstantPool);
 277   printf("\n");
 278 
 279   GEN_SIZE(PcDesc);
 280   GEN_SIZE(Method);
 281   GEN_SIZE(ConstMethod);
 282   GEN_SIZE(nmethod);
 283   GEN_SIZE(CodeBlob);
 284   GEN_SIZE(BufferBlob);
 285   GEN_SIZE(SingletonBlob);
 286   GEN_SIZE(RuntimeStub);
 287   GEN_SIZE(SafepointBlob);
 288 
 289   gen_epilogue(gen_variant);
 290   printf("\n");
 291 
 292   fflush(stdout);
 293   return 0;
 294 }