1/*
2 * Copyright (c) 2003, 2016, 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/shared/collectedHeap.hpp"
45#include "memory/heap.hpp"
46#include "memory/memRegion.hpp"
47#include "memory/universe.hpp"
48#include "memory/virtualspace.hpp"
49#include "oops/constMethod.hpp"
50#include "oops/klass.hpp"
51#include "oops/method.hpp"
52#include "oops/oop.hpp"
53#include "oops/symbol.hpp"
54#include "runtime/vmStructs.hpp"
55#include "utilities/accessFlags.hpp"
56#include "utilities/globalDefinitions.hpp"
57#ifdef COMPILER1
58#ifdef ASSERT
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 below.
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 /* ASSERT */
83#endif /* COMPILER1 */
84
85#define GEN_OFFS_NAME(Type,Name,OutputType)             \
86  switch(gen_variant) {                                 \
87  case GEN_OFFSET:                                      \
88    printf("#define OFFSET_%-33s %ld\n",                \
89            #OutputType #Name, offset_of(Type, Name));  \
90    break;                                              \
91  case GEN_INDEX:                                       \
92    printf("#define IDX_OFFSET_%-33s %d\n",             \
93            #OutputType #Name, index++);                \
94    break;                                              \
95  case GEN_TABLE:                                       \
96    printf("\tOFFSET_%s,\n", #OutputType #Name);        \
97    break;                                              \
98  }
99
100#define GEN_OFFS(Type,Name)                             \
101  GEN_OFFS_NAME(Type,Name,Type)
102
103#define GEN_SIZE(Type)                                  \
104  switch(gen_variant) {                                 \
105  case GEN_OFFSET:                                      \
106    printf("#define SIZE_%-35s %ld\n",                  \
107            #Type, sizeof(Type));                       \
108    break;                                              \
109  case GEN_INDEX:                                       \
110    printf("#define IDX_SIZE_%-35s %d\n",               \
111            #Type, index++);                            \
112    break;                                              \
113  case GEN_TABLE:                                       \
114    printf("\tSIZE_%s,\n", #Type);                      \
115    break;                                              \
116  }
117
118#define GEN_VALUE(String,Value)                         \
119  switch(gen_variant) {                                 \
120  case GEN_OFFSET:                                      \
121    printf("#define %-40s %d\n", #String, Value);       \
122    break;                                              \
123  case GEN_INDEX:                                       \
124    printf("#define IDX_%-40s %d\n", #String, index++); \
125    break;                                              \
126  case GEN_TABLE:                                       \
127    printf("\t" #String ",\n");                         \
128    break;                                              \
129  }
130
131void gen_prologue(GEN_variant gen_variant) {
132    const char *suffix = "Undefined-Suffix";
133
134    switch(gen_variant) {
135      case GEN_OFFSET: suffix = ".h";        break;
136      case GEN_INDEX:  suffix = "Index.h";   break;
137      case GEN_TABLE:  suffix = ".cpp";      break;
138    }
139
140    printf("/*\n");
141    printf(" * JvmOffsets%s !!!DO NOT EDIT!!! \n", suffix);
142    printf(" * The generateJvmOffsets program generates this file!\n");
143    printf(" */\n\n");
144    switch(gen_variant) {
145
146      case GEN_OFFSET:
147      case GEN_INDEX:
148        break;
149
150      case GEN_TABLE:
151        printf("#include \"JvmOffsets.h\"\n");
152        printf("\n");
153        printf("int __JvmOffsets[] = {\n");
154        break;
155    }
156}
157
158void gen_epilogue(GEN_variant gen_variant) {
159    if (gen_variant != GEN_TABLE) {
160        return;
161    }
162    printf("};\n\n");
163    return;
164}
165
166int generateJvmOffsets(GEN_variant gen_variant) {
167  int index = 0;        /* It is used to generate JvmOffsetsIndex.h */
168  int pointer_size = sizeof(void *);
169  int data_model = (pointer_size == 4) ? PR_MODEL_ILP32 : PR_MODEL_LP64;
170
171  gen_prologue(gen_variant);
172
173  GEN_VALUE(DATA_MODEL, data_model);
174  GEN_VALUE(POINTER_SIZE, pointer_size);
175#if defined(TIERED)
176  GEN_VALUE(COMPILER, 3);
177#elif COMPILER1
178  GEN_VALUE(COMPILER, 1);
179#elif COMPILER2
180  GEN_VALUE(COMPILER, 2);
181#else
182  GEN_VALUE(COMPILER, 0);
183#endif // COMPILER1 && COMPILER2
184  printf("\n");
185
186  GEN_OFFS(CollectedHeap, _reserved);
187  GEN_OFFS(MemRegion, _start);
188  GEN_OFFS(MemRegion, _word_size);
189  GEN_SIZE(HeapWord);
190  printf("\n");
191
192  GEN_OFFS(VMStructEntry, typeName);
193  GEN_OFFS(VMStructEntry, fieldName);
194  GEN_OFFS(VMStructEntry, address);
195  GEN_SIZE(VMStructEntry);
196  printf("\n");
197
198  GEN_VALUE(MAX_METHOD_CODE_SIZE, max_method_code_size);
199#if defined(sparc) || defined(__sparc)
200  GEN_VALUE(OFFSET_interpreter_frame_method, 2 * pointer_size);     /* L2 in saved window */
201  GEN_VALUE(OFFSET_interpreter_frame_sender_sp, 13 * pointer_size); /* I5 in saved window */
202  // Fake value for consistency. It is not going to be used.
203  GEN_VALUE(OFFSET_interpreter_frame_bcp_offset, 0xFFFF);
204#elif defined(i386) || defined(__i386) || defined(__amd64)
205  GEN_VALUE(OFFSET_interpreter_frame_sender_sp, -1 * pointer_size);
206  GEN_VALUE(OFFSET_interpreter_frame_method, -3 * pointer_size);
207  GEN_VALUE(OFFSET_interpreter_frame_bcp_offset, -7 * pointer_size);
208#endif
209
210  GEN_OFFS(Klass, _name);
211  GEN_OFFS(ConstantPool, _pool_holder);
212  printf("\n");
213
214  GEN_VALUE(OFFSET_HeapBlockHeader_used, (int) offset_of(HeapBlock::Header, _used));
215  GEN_OFFS(oopDesc, _metadata);
216  printf("\n");
217
218  GEN_VALUE(AccessFlags_NATIVE, JVM_ACC_NATIVE);
219  GEN_VALUE(ConstMethod_has_linenumber_table, ConstMethod::_has_linenumber_table);
220  GEN_OFFS(AccessFlags, _flags);
221  GEN_OFFS(Symbol, _length);
222  GEN_OFFS(Symbol, _body);
223  printf("\n");
224
225  GEN_OFFS(Method, _constMethod);
226  GEN_OFFS(Method, _access_flags);
227  printf("\n");
228
229  GEN_OFFS(ConstMethod, _constants);
230  GEN_OFFS(ConstMethod, _flags);
231  GEN_OFFS(ConstMethod, _code_size);
232  GEN_OFFS(ConstMethod, _name_index);
233  GEN_OFFS(ConstMethod, _signature_index);
234  printf("\n");
235
236  GEN_OFFS(CodeHeap, _memory);
237  GEN_OFFS(CodeHeap, _segmap);
238  GEN_OFFS(CodeHeap, _log2_segment_size);
239  printf("\n");
240
241  GEN_OFFS(VirtualSpace, _low_boundary);
242  GEN_OFFS(VirtualSpace, _high_boundary);
243  GEN_OFFS(VirtualSpace, _low);
244  GEN_OFFS(VirtualSpace, _high);
245  printf("\n");
246
247  /* We need to use different names here because of the template parameter */
248  GEN_OFFS_NAME(GrowableArray<CodeHeap*>, _data, GrowableArray_CodeHeap);
249  GEN_OFFS_NAME(GrowableArray<CodeHeap*>, _len, GrowableArray_CodeHeap);
250  printf("\n");
251
252  GEN_OFFS(CodeBlob, _name);
253  GEN_OFFS(CodeBlob, _header_size);
254  GEN_OFFS(CodeBlob, _content_begin);
255  GEN_OFFS(CodeBlob, _code_begin);
256  GEN_OFFS(CodeBlob, _code_end);
257  GEN_OFFS(CodeBlob, _data_offset);
258  GEN_OFFS(CodeBlob, _frame_size);
259  printf("\n");
260
261  GEN_OFFS(nmethod, _method);
262  GEN_OFFS(nmethod, _dependencies_offset);
263  GEN_OFFS(nmethod, _metadata_offset);
264  GEN_OFFS(nmethod, _scopes_data_begin);
265  GEN_OFFS(nmethod, _scopes_pcs_offset);
266  GEN_OFFS(nmethod, _handler_table_offset);
267  GEN_OFFS(nmethod, _deopt_handler_begin);
268  GEN_OFFS(nmethod, _orig_pc_offset);
269
270  GEN_OFFS(PcDesc, _pc_offset);
271  GEN_OFFS(PcDesc, _scope_decode_offset);
272
273  printf("\n");
274
275  GEN_OFFS(NarrowPtrStruct, _base);
276  GEN_OFFS(NarrowPtrStruct, _shift);
277  printf("\n");
278
279  GEN_VALUE(SIZE_HeapBlockHeader, (int) sizeof(HeapBlock::Header));
280  GEN_SIZE(oopDesc);
281  GEN_SIZE(ConstantPool);
282  printf("\n");
283
284  GEN_SIZE(PcDesc);
285  GEN_SIZE(Method);
286  GEN_SIZE(ConstMethod);
287  GEN_SIZE(nmethod);
288  GEN_SIZE(CodeBlob);
289  GEN_SIZE(BufferBlob);
290  GEN_SIZE(SingletonBlob);
291  GEN_SIZE(RuntimeStub);
292  GEN_SIZE(SafepointBlob);
293
294  gen_epilogue(gen_variant);
295  printf("\n");
296
297  fflush(stdout);
298  return 0;
299}
300