generateJvmOffsets.cpp revision 2273:1d1603768966 
1/*
2 * Copyright (c) 2003, 2011, 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#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/constMethodOop.hpp"
49#include "oops/klass.hpp"
50#include "oops/methodOop.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#ifdef COMPILER1
58#if defined(DEBUG) || defined(FASTDEBUG)
59
60/*
61 * To avoid the most part of potential link errors
62 * we link this program with -z nodefs .
63 *
64 * But for 'debug1' and 'fastdebug1' we still have to provide
65 * a particular workaround for the following symbols bellow.
66 * It will be good to find out a generic way in the future.
67 */
68
69#pragma weak tty
70#pragma weak CMSExpAvgFactor
71
72#if defined(i386) || defined(__i386) || defined(__amd64)
73#pragma weak noreg
74#endif /* i386 */
75
76LIR_Opr LIR_OprFact::illegalOpr = (LIR_Opr) 0;
77
78address StubRoutines::_call_stub_return_address = NULL;
79
80StubQueue* AbstractInterpreter::_code = NULL;
81
82#endif /* defined(DEBUG) || defined(FASTDEBUG) */
83#endif /* COMPILER1 */
84
85#define GEN_OFFS(Type,Name)                             \
86  switch(gen_variant) {                                 \
87  case GEN_OFFSET:                                      \
88    printf("#define OFFSET_%-33s %d\n",                 \
89            #Type #Name, offset_of(Type, Name));        \
90    break;                                              \
91  case GEN_INDEX:                                       \
92    printf("#define IDX_OFFSET_%-33s %d\n",             \
93            #Type #Name, index++);                      \
94    break;                                              \
95  case GEN_TABLE:                                       \
96    printf("\tOFFSET_%s,\n", #Type #Name);              \
97    break;                                              \
98  }
99
100#define GEN_SIZE(Type)                                  \
101  switch(gen_variant) {                                 \
102  case GEN_OFFSET:                                      \
103    printf("#define SIZE_%-35s %d\n",                   \
104            #Type, sizeof(Type));                       \
105    break;                                              \
106  case GEN_INDEX:                                       \
107    printf("#define IDX_SIZE_%-35s %d\n",               \
108            #Type, index++);                            \
109    break;                                              \
110  case GEN_TABLE:                                       \
111    printf("\tSIZE_%s,\n", #Type);                      \
112    break;                                              \
113  }
114
115#define GEN_VALUE(String,Value)                         \
116  switch(gen_variant) {                                 \
117  case GEN_OFFSET:                                      \
118    printf("#define %-40s %d\n", #String, Value);       \
119    break;                                              \
120  case GEN_INDEX:                                       \
121    printf("#define IDX_%-40s %d\n", #String, index++); \
122    break;                                              \
123  case GEN_TABLE:                                       \
124    printf("\t" #String ",\n");                         \
125    break;                                              \
126  }
127
128void gen_prologue(GEN_variant gen_variant) {
129    const char *suffix;
130
131    switch(gen_variant) {
132      case GEN_OFFSET: suffix = ".h";        break;
133      case GEN_INDEX:  suffix = "Index.h";   break;
134      case GEN_TABLE:  suffix = ".cpp";      break;
135    }
136
137    printf("/*\n");
138    printf(" * JvmOffsets%s !!!DO NOT EDIT!!! \n", suffix);
139    printf(" * The generateJvmOffsets program generates this file!\n");
140    printf(" */\n\n");
141    switch(gen_variant) {
142
143      case GEN_OFFSET:
144      case GEN_INDEX:
145        break;
146
147      case GEN_TABLE:
148        printf("#include \"JvmOffsets.h\"\n");
149        printf("\n");
150        printf("int __JvmOffsets[] = {\n");
151        break;
152    }
153}
154
155void gen_epilogue(GEN_variant gen_variant) {
156    if (gen_variant != GEN_TABLE) {
157        return;
158    }
159    printf("};\n\n");
160    return;
161}
162
163int generateJvmOffsets(GEN_variant gen_variant) {
164  int index = 0;        /* It is used to generate JvmOffsetsIndex.h */
165  int pointer_size = sizeof(void *);
166  int data_model = (pointer_size == 4) ? PR_MODEL_ILP32 : PR_MODEL_LP64;
167
168  gen_prologue(gen_variant);
169
170  GEN_VALUE(DATA_MODEL, data_model);
171  GEN_VALUE(POINTER_SIZE, pointer_size);
172#if defined(TIERED)
173  GEN_VALUE(COMPILER, 3);
174#elif COMPILER1
175  GEN_VALUE(COMPILER, 1);
176#elif COMPILER2
177  GEN_VALUE(COMPILER, 2);
178#else
179  GEN_VALUE(COMPILER, 0);
180#endif // COMPILER1 && COMPILER2
181  printf("\n");
182
183  GEN_OFFS(CollectedHeap, _reserved);
184  GEN_OFFS(MemRegion, _start);
185  GEN_OFFS(MemRegion, _word_size);
186  GEN_SIZE(HeapWord);
187  printf("\n");
188
189  GEN_OFFS(VMStructEntry, typeName);
190  GEN_OFFS(VMStructEntry, fieldName);
191  GEN_OFFS(VMStructEntry, address);
192  GEN_SIZE(VMStructEntry);
193  printf("\n");
194
195  GEN_VALUE(MAX_METHOD_CODE_SIZE, max_method_code_size);
196#if defined(sparc) || defined(__sparc)
197  GEN_VALUE(OFFSET_interpreter_frame_method, 2 * pointer_size);     /* L2 in saved window */
198  GEN_VALUE(OFFSET_interpreter_frame_sender_sp, 13 * pointer_size); /* I5 in saved window */
199  // Fake value for consistency. It is not going to be used.
200  GEN_VALUE(OFFSET_interpreter_frame_bcx_offset, 0xFFFF);
201#elif defined(i386) || defined(__i386) || defined(__amd64)
202  GEN_VALUE(OFFSET_interpreter_frame_sender_sp, -1 * pointer_size);
203  GEN_VALUE(OFFSET_interpreter_frame_method, -3 * pointer_size);
204  GEN_VALUE(OFFSET_interpreter_frame_bcx_offset, -7 * pointer_size);
205#endif
206
207  GEN_OFFS(Klass, _name);
208  GEN_OFFS(constantPoolOopDesc, _pool_holder);
209  printf("\n");
210
211  GEN_VALUE(OFFSET_HeapBlockHeader_used, offset_of(HeapBlock::Header, _used));
212  GEN_OFFS(oopDesc, _metadata);
213  printf("\n");
214
215  GEN_VALUE(AccessFlags_NATIVE, JVM_ACC_NATIVE);
216  GEN_VALUE(constMethodOopDesc_has_linenumber_table, constMethodOopDesc::_has_linenumber_table);
217  GEN_OFFS(AccessFlags, _flags);
218  GEN_OFFS(Symbol, _length);
219  GEN_OFFS(Symbol, _body);
220  printf("\n");
221
222  GEN_OFFS(methodOopDesc, _constMethod);
223  GEN_OFFS(methodOopDesc, _constants);
224  GEN_OFFS(methodOopDesc, _access_flags);
225  printf("\n");
226
227  GEN_OFFS(constMethodOopDesc, _flags);
228  GEN_OFFS(constMethodOopDesc, _code_size);
229  GEN_OFFS(constMethodOopDesc, _name_index);
230  GEN_OFFS(constMethodOopDesc, _signature_index);
231  printf("\n");
232
233  GEN_OFFS(CodeHeap, _memory);
234  GEN_OFFS(CodeHeap, _segmap);
235  GEN_OFFS(CodeHeap, _log2_segment_size);
236  printf("\n");
237
238  GEN_OFFS(VirtualSpace, _low_boundary);
239  GEN_OFFS(VirtualSpace, _high_boundary);
240  GEN_OFFS(VirtualSpace, _low);
241  GEN_OFFS(VirtualSpace, _high);
242  printf("\n");
243
244  GEN_OFFS(CodeBlob, _name);
245  GEN_OFFS(CodeBlob, _header_size);
246  GEN_OFFS(CodeBlob, _content_offset);
247  GEN_OFFS(CodeBlob, _code_offset);
248  GEN_OFFS(CodeBlob, _data_offset);
249  GEN_OFFS(CodeBlob, _frame_size);
250  printf("\n");
251
252  GEN_OFFS(nmethod, _method);
253  GEN_OFFS(nmethod, _oops_offset);
254  GEN_OFFS(nmethod, _scopes_data_offset);
255  GEN_OFFS(nmethod, _scopes_pcs_offset);
256  GEN_OFFS(nmethod, _handler_table_offset);
257  GEN_OFFS(nmethod, _deoptimize_offset);
258  GEN_OFFS(nmethod, _orig_pc_offset);
259
260  GEN_OFFS(PcDesc, _pc_offset);
261  GEN_OFFS(PcDesc, _scope_decode_offset);
262
263  printf("\n");
264
265  GEN_OFFS(NarrowOopStruct, _base);
266  GEN_OFFS(NarrowOopStruct, _shift);
267  printf("\n");
268
269  GEN_VALUE(SIZE_HeapBlockHeader, sizeof(HeapBlock::Header));
270  GEN_SIZE(oopDesc);
271  GEN_SIZE(constantPoolOopDesc);
272  printf("\n");
273
274  GEN_SIZE(PcDesc);
275  GEN_SIZE(methodOopDesc);
276  GEN_SIZE(constMethodOopDesc);
277  GEN_SIZE(nmethod);
278  GEN_SIZE(CodeBlob);
279  GEN_SIZE(BufferBlob);
280  GEN_SIZE(SingletonBlob);
281  GEN_SIZE(RuntimeStub);
282  GEN_SIZE(SafepointBlob);
283
284  gen_epilogue(gen_variant);
285  printf("\n");
286
287  fflush(stdout);
288  return 0;
289}
290