generateJvmOffsets.cpp revision 1499:e9ff18c4ace7 
1/*
2 * Copyright (c) 2003, 2010, 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 "incls/_precompiled.incl"
42#include "incls/_vmStructs.cpp.incl"
43
44#ifdef COMPILER1
45#if defined(DEBUG) || defined(FASTDEBUG)
46
47/*
48 * To avoid the most part of potential link errors
49 * we link this program with -z nodefs .
50 *
51 * But for 'debug1' and 'fastdebug1' we still have to provide
52 * a particular workaround for the following symbols bellow.
53 * It will be good to find out a generic way in the future.
54 */
55
56#pragma weak tty
57#pragma weak CMSExpAvgFactor
58
59#if defined(i386) || defined(__i386) || defined(__amd64)
60#pragma weak noreg
61#endif /* i386 */
62
63LIR_Opr LIR_OprFact::illegalOpr = (LIR_Opr) 0;
64
65address StubRoutines::_call_stub_return_address = NULL;
66
67StubQueue* AbstractInterpreter::_code = NULL;
68
69#endif /* defined(DEBUG) || defined(FASTDEBUG) */
70#endif /* COMPILER1 */
71
72#define GEN_OFFS(Type,Name)                             \
73  switch(gen_variant) {                                 \
74  case GEN_OFFSET:                                      \
75    printf("#define OFFSET_%-33s %d\n",                 \
76            #Type #Name, offset_of(Type, Name));        \
77    break;                                              \
78  case GEN_INDEX:                                       \
79    printf("#define IDX_OFFSET_%-33s %d\n",             \
80            #Type #Name, index++);                      \
81    break;                                              \
82  case GEN_TABLE:                                       \
83    printf("\tOFFSET_%s,\n", #Type #Name);              \
84    break;                                              \
85  }
86
87#define GEN_SIZE(Type)                                  \
88  switch(gen_variant) {                                 \
89  case GEN_OFFSET:                                      \
90    printf("#define SIZE_%-35s %d\n",                   \
91            #Type, sizeof(Type));                       \
92    break;                                              \
93  case GEN_INDEX:                                       \
94    printf("#define IDX_SIZE_%-35s %d\n",               \
95            #Type, index++);                            \
96    break;                                              \
97  case GEN_TABLE:                                       \
98    printf("\tSIZE_%s,\n", #Type);                      \
99    break;                                              \
100  }
101
102#define GEN_VALUE(String,Value)                         \
103  switch(gen_variant) {                                 \
104  case GEN_OFFSET:                                      \
105    printf("#define %-40s %d\n", #String, Value);       \
106    break;                                              \
107  case GEN_INDEX:                                       \
108    printf("#define IDX_%-40s %d\n", #String, index++); \
109    break;                                              \
110  case GEN_TABLE:                                       \
111    printf("\t" #String ",\n");                         \
112    break;                                              \
113  }
114
115void gen_prologue(GEN_variant gen_variant) {
116    const char *suffix;
117
118    switch(gen_variant) {
119      case GEN_OFFSET: suffix = ".h";        break;
120      case GEN_INDEX:  suffix = "Index.h";   break;
121      case GEN_TABLE:  suffix = ".cpp";      break;
122    }
123
124    printf("/*\n");
125    printf(" * JvmOffsets%s !!!DO NOT EDIT!!! \n", suffix);
126    printf(" * The generateJvmOffsets program generates this file!\n");
127    printf(" */\n\n");
128    switch(gen_variant) {
129
130      case GEN_OFFSET:
131      case GEN_INDEX:
132        break;
133
134      case GEN_TABLE:
135        printf("#include \"JvmOffsets.h\"\n");
136        printf("\n");
137        printf("int __JvmOffsets[] = {\n");
138        break;
139    }
140}
141
142void gen_epilogue(GEN_variant gen_variant) {
143    if (gen_variant != GEN_TABLE) {
144        return;
145    }
146    printf("};\n\n");
147    return;
148}
149
150int generateJvmOffsets(GEN_variant gen_variant) {
151  int index = 0;        /* It is used to generate JvmOffsetsIndex.h */
152  int pointer_size = sizeof(void *);
153  int data_model = (pointer_size == 4) ? PR_MODEL_ILP32 : PR_MODEL_LP64;
154
155  gen_prologue(gen_variant);
156
157  GEN_VALUE(DATA_MODEL, data_model);
158  GEN_VALUE(POINTER_SIZE, pointer_size);
159#if defined(TIERED)
160  GEN_VALUE(COMPILER, 3);
161#elif COMPILER1
162  GEN_VALUE(COMPILER, 1);
163#elif COMPILER2
164  GEN_VALUE(COMPILER, 2);
165#else
166  GEN_VALUE(COMPILER, 0);
167#endif // COMPILER1 && COMPILER2
168  printf("\n");
169
170  GEN_OFFS(CollectedHeap, _reserved);
171  GEN_OFFS(MemRegion, _start);
172  GEN_OFFS(MemRegion, _word_size);
173  GEN_SIZE(HeapWord);
174  printf("\n");
175
176  GEN_OFFS(VMStructEntry, typeName);
177  GEN_OFFS(VMStructEntry, fieldName);
178  GEN_OFFS(VMStructEntry, address);
179  GEN_SIZE(VMStructEntry);
180  printf("\n");
181
182  GEN_VALUE(MAX_METHOD_CODE_SIZE, max_method_code_size);
183#if defined(sparc) || defined(__sparc)
184  GEN_VALUE(OFFSET_interpreter_frame_method, 2 * pointer_size);     /* L2 in saved window */
185  GEN_VALUE(OFFSET_interpreter_frame_sender_sp, 13 * pointer_size); /* I5 in saved window */
186  // Fake value for consistency. It is not going to be used.
187  GEN_VALUE(OFFSET_interpreter_frame_bcx_offset, 0xFFFF);
188#elif defined(i386) || defined(__i386) || defined(__amd64)
189  GEN_VALUE(OFFSET_interpreter_frame_sender_sp, -1 * pointer_size);
190  GEN_VALUE(OFFSET_interpreter_frame_method, -3 * pointer_size);
191  GEN_VALUE(OFFSET_interpreter_frame_bcx_offset, -7 * pointer_size);
192#endif
193
194  GEN_OFFS(Klass, _name);
195  GEN_OFFS(constantPoolOopDesc, _pool_holder);
196  printf("\n");
197
198  GEN_VALUE(OFFSET_HeapBlockHeader_used, offset_of(HeapBlock::Header, _used));
199  GEN_OFFS(oopDesc, _metadata);
200  printf("\n");
201
202  GEN_VALUE(AccessFlags_NATIVE, JVM_ACC_NATIVE);
203  GEN_VALUE(constMethodOopDesc_has_linenumber_table, constMethodOopDesc::_has_linenumber_table);
204  GEN_OFFS(AccessFlags, _flags);
205  GEN_OFFS(symbolOopDesc, _length);
206  GEN_OFFS(symbolOopDesc, _body);
207  printf("\n");
208
209  GEN_OFFS(methodOopDesc, _constMethod);
210  GEN_OFFS(methodOopDesc, _constants);
211  GEN_OFFS(methodOopDesc, _access_flags);
212  printf("\n");
213
214  GEN_OFFS(constMethodOopDesc, _flags);
215  GEN_OFFS(constMethodOopDesc, _code_size);
216  GEN_OFFS(constMethodOopDesc, _name_index);
217  GEN_OFFS(constMethodOopDesc, _signature_index);
218  printf("\n");
219
220  GEN_OFFS(CodeHeap, _memory);
221  GEN_OFFS(CodeHeap, _segmap);
222  GEN_OFFS(CodeHeap, _log2_segment_size);
223  printf("\n");
224
225  GEN_OFFS(VirtualSpace, _low_boundary);
226  GEN_OFFS(VirtualSpace, _high_boundary);
227  GEN_OFFS(VirtualSpace, _low);
228  GEN_OFFS(VirtualSpace, _high);
229  printf("\n");
230
231  GEN_OFFS(CodeBlob, _name);
232  GEN_OFFS(CodeBlob, _header_size);
233  GEN_OFFS(CodeBlob, _instructions_offset);
234  GEN_OFFS(CodeBlob, _data_offset);
235  GEN_OFFS(CodeBlob, _frame_size);
236  printf("\n");
237
238  GEN_OFFS(nmethod, _method);
239  GEN_OFFS(nmethod, _oops_offset);
240  GEN_OFFS(nmethod, _scopes_data_offset);
241  GEN_OFFS(nmethod, _scopes_pcs_offset);
242  GEN_OFFS(nmethod, _handler_table_offset);
243  GEN_OFFS(nmethod, _deoptimize_offset);
244  GEN_OFFS(nmethod, _orig_pc_offset);
245
246  GEN_OFFS(PcDesc, _pc_offset);
247  GEN_OFFS(PcDesc, _scope_decode_offset);
248
249  printf("\n");
250
251  GEN_OFFS(NarrowOopStruct, _base);
252  GEN_OFFS(NarrowOopStruct, _shift);
253  printf("\n");
254
255  GEN_VALUE(SIZE_HeapBlockHeader, sizeof(HeapBlock::Header));
256  GEN_SIZE(oopDesc);
257  GEN_SIZE(constantPoolOopDesc);
258  printf("\n");
259
260  GEN_SIZE(PcDesc);
261  GEN_SIZE(methodOopDesc);
262  GEN_SIZE(constMethodOopDesc);
263  GEN_SIZE(nmethod);
264  GEN_SIZE(CodeBlob);
265  GEN_SIZE(BufferBlob);
266  GEN_SIZE(SingletonBlob);
267  GEN_SIZE(RuntimeStub);
268  GEN_SIZE(SafepointBlob);
269
270  gen_epilogue(gen_variant);
271  printf("\n");
272
273  fflush(stdout);
274  return 0;
275}
276