1 /*
2 * Copyright (c) 2003, 2018, 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 <stdio.h>
35 #include <strings.h>
36
37 /* A workaround for private and protected fields */
38 #define private public
39 #define protected public
40
41 #include <proc_service.h>
42 #include "gc/shared/collectedHeap.hpp"
43 #include "runtime/vmStructs.hpp"
44
45 typedef enum GEN_variant {
46 GEN_OFFSET = 0,
47 GEN_INDEX = 1,
48 GEN_TABLE = 2
49 } GEN_variant;
50
51 #ifdef COMPILER1
52 #ifdef ASSERT
53
54 /*
55 * To avoid the most part of potential link errors
56 * we link this program with -z nodefs .
57 *
58 * But for 'debug1' and 'fastdebug1' we still have to provide
59 * a particular workaround for the following symbols below.
60 * It will be good to find out a generic way in the future.
61 */
62
63 #pragma weak tty
64 #pragma weak CMSExpAvgFactor
65
66 #if defined(i386) || defined(__i386) || defined(__amd64)
67 #pragma weak noreg
68 #endif /* i386 */
69
70 LIR_Opr LIR_OprFact::illegalOpr = (LIR_Opr) 0;
71
72 address StubRoutines::_call_stub_return_address = NULL;
73
74 StubQueue* AbstractInterpreter::_code = NULL;
75
76 #endif /* ASSERT */
77 #endif /* COMPILER1 */
78
79 #define GEN_OFFS_NAME(Type,Name,OutputType) \
80 switch(gen_variant) { \
81 case GEN_OFFSET: \
82 printf("#define OFFSET_%-33s %ld\n", \
83 #OutputType #Name, offset_of(Type, Name)); \
84 break; \
85 case GEN_INDEX: \
86 printf("#define IDX_OFFSET_%-33s %d\n", \
87 #OutputType #Name, index++); \
88 break; \
89 case GEN_TABLE: \
90 printf("\tOFFSET_%s,\n", #OutputType #Name); \
91 break; \
92 }
93
94 #define GEN_OFFS(Type,Name) \
95 GEN_OFFS_NAME(Type,Name,Type)
96
97 #define GEN_SIZE(Type) \
98 switch(gen_variant) { \
99 case GEN_OFFSET: \
100 printf("#define SIZE_%-35s %ld\n", \
101 #Type, sizeof(Type)); \
102 break; \
103 case GEN_INDEX: \
104 printf("#define IDX_SIZE_%-35s %d\n", \
105 #Type, index++); \
106 break; \
107 case GEN_TABLE: \
108 printf("\tSIZE_%s,\n", #Type); \
109 break; \
110 }
111
112 #define GEN_VALUE(String,Value) \
113 switch(gen_variant) { \
114 case GEN_OFFSET: \
115 printf("#define %-40s %d\n", #String, Value); \
116 break; \
117 case GEN_INDEX: \
118 printf("#define IDX_%-40s %d\n", #String, index++); \
119 break; \
120 case GEN_TABLE: \
121 printf("\t" #String ",\n"); \
122 break; \
123 }
124
125 void gen_prologue(GEN_variant gen_variant) {
126 const char *suffix = "Undefined-Suffix";
127
128 switch(gen_variant) {
129 case GEN_OFFSET: suffix = ".h"; break;
130 case GEN_INDEX: suffix = "Index.h"; break;
131 case GEN_TABLE: suffix = ".cpp"; break;
132 }
133
134 printf("/*\n");
135 printf(" * JvmOffsets%s !!!DO NOT EDIT!!! \n", suffix);
136 printf(" * The generateJvmOffsets program generates this file!\n");
137 printf(" */\n\n");
138 switch(gen_variant) {
139
140 case GEN_OFFSET:
141 case GEN_INDEX:
142 break;
143
144 case GEN_TABLE:
145 printf("#include \"JvmOffsets.h\"\n");
146 printf("\n");
147 printf("int __JvmOffsets[] = {\n");
148 break;
149 }
150 }
151
152 void gen_epilogue(GEN_variant gen_variant) {
153 if (gen_variant != GEN_TABLE) {
154 return;
155 }
156 printf("};\n\n");
157 return;
158 }
159
160 int generateJvmOffsets(GEN_variant gen_variant) {
161 int index = 0; /* It is used to generate JvmOffsetsIndex.h */
162 int pointer_size = sizeof(void *);
163 int data_model = (pointer_size == 4) ? PR_MODEL_ILP32 : PR_MODEL_LP64;
164
165 gen_prologue(gen_variant);
166
167 GEN_VALUE(DATA_MODEL, data_model);
168 GEN_VALUE(POINTER_SIZE, pointer_size);
169 #if defined(TIERED)
170 GEN_VALUE(COMPILER, 3);
171 #elif COMPILER1
172 GEN_VALUE(COMPILER, 1);
173 #elif COMPILER2
174 GEN_VALUE(COMPILER, 2);
175 #else
176 GEN_VALUE(COMPILER, 0);
177 #endif // COMPILER1 && COMPILER2
178 printf("\n");
179
180 GEN_OFFS(CollectedHeap, _reserved);
181 GEN_OFFS(MemRegion, _start);
182 GEN_OFFS(MemRegion, _word_size);
183 GEN_SIZE(HeapWord);
184 printf("\n");
185
186 GEN_OFFS(VMStructEntry, typeName);
187 GEN_OFFS(VMStructEntry, fieldName);
188 GEN_OFFS(VMStructEntry, address);
189 GEN_SIZE(VMStructEntry);
190 printf("\n");
191
192 GEN_VALUE(MAX_METHOD_CODE_SIZE, max_method_code_size);
193 #if defined(sparc) || defined(__sparc)
194 GEN_VALUE(OFFSET_interpreter_frame_method, 2 * pointer_size); /* L2 in saved window */
195 GEN_VALUE(OFFSET_interpreter_frame_sender_sp, 13 * pointer_size); /* I5 in saved window */
196 // Fake value for consistency. It is not going to be used.
197 GEN_VALUE(OFFSET_interpreter_frame_bcp_offset, 0xFFFF);
198 #elif defined(i386) || defined(__i386) || defined(__amd64)
199 GEN_VALUE(OFFSET_interpreter_frame_sender_sp, -1 * pointer_size);
200 GEN_VALUE(OFFSET_interpreter_frame_method, -3 * pointer_size);
201 GEN_VALUE(OFFSET_interpreter_frame_bcp_offset, -7 * pointer_size);
202 #endif
203
204 GEN_OFFS(Klass, _name);
205 GEN_OFFS(ConstantPool, _pool_holder);
206 printf("\n");
207
208 GEN_VALUE(OFFSET_HeapBlockHeader_used, (int) offset_of(HeapBlock::Header, _used));
209 GEN_OFFS(oopDesc, _metadata);
210 printf("\n");
211
212 GEN_VALUE(AccessFlags_NATIVE, JVM_ACC_NATIVE);
213 GEN_VALUE(ConstMethod_has_linenumber_table, ConstMethod::_has_linenumber_table);
214 GEN_OFFS(AccessFlags, _flags);
215 GEN_OFFS(Symbol, _length_and_refcount);
216 GEN_OFFS(Symbol, _body);
217 printf("\n");
218
219 GEN_OFFS(Method, _constMethod);
220 GEN_OFFS(Method, _access_flags);
221 printf("\n");
222
223 GEN_OFFS(ConstMethod, _constants);
224 GEN_OFFS(ConstMethod, _flags);
225 GEN_OFFS(ConstMethod, _code_size);
226 GEN_OFFS(ConstMethod, _name_index);
227 GEN_OFFS(ConstMethod, _signature_index);
228 printf("\n");
229
230 GEN_OFFS(CodeHeap, _memory);
231 GEN_OFFS(CodeHeap, _segmap);
232 GEN_OFFS(CodeHeap, _log2_segment_size);
233 printf("\n");
234
235 GEN_OFFS(VirtualSpace, _low_boundary);
236 GEN_OFFS(VirtualSpace, _high_boundary);
237 GEN_OFFS(VirtualSpace, _low);
238 GEN_OFFS(VirtualSpace, _high);
239 printf("\n");
240
241 /* We need to use different names here because of the template parameter */
242 GEN_OFFS_NAME(GrowableArray<CodeHeap*>, _data, GrowableArray_CodeHeap);
243 GEN_OFFS_NAME(GrowableArray<CodeHeap*>, _len, GrowableArray_CodeHeap);
244 printf("\n");
245
246 GEN_OFFS(CodeBlob, _name);
247 GEN_OFFS(CodeBlob, _header_size);
248 GEN_OFFS(CodeBlob, _content_begin);
249 GEN_OFFS(CodeBlob, _code_begin);
250 GEN_OFFS(CodeBlob, _code_end);
251 GEN_OFFS(CodeBlob, _data_offset);
252 GEN_OFFS(CodeBlob, _frame_size);
253 printf("\n");
254
255 GEN_OFFS(nmethod, _method);
256 GEN_OFFS(nmethod, _dependencies_offset);
257 GEN_OFFS(nmethod, _metadata_offset);
258 GEN_OFFS(nmethod, _scopes_data_begin);
259 GEN_OFFS(nmethod, _scopes_pcs_offset);
260 GEN_OFFS(nmethod, _handler_table_offset);
261 GEN_OFFS(nmethod, _deopt_handler_begin);
262 GEN_OFFS(nmethod, _orig_pc_offset);
263
264 GEN_OFFS(PcDesc, _pc_offset);
265 GEN_OFFS(PcDesc, _scope_decode_offset);
266
267 printf("\n");
268
269 GEN_OFFS(NarrowPtrStruct, _base);
270 GEN_OFFS(NarrowPtrStruct, _shift);
271 printf("\n");
272
273 GEN_VALUE(SIZE_HeapBlockHeader, (int) sizeof(HeapBlock::Header));
274 GEN_SIZE(oopDesc);
275 GEN_SIZE(ConstantPool);
276 printf("\n");
277
278 GEN_SIZE(PcDesc);
279 GEN_SIZE(Method);
280 GEN_SIZE(ConstMethod);
281 GEN_SIZE(nmethod);
282 GEN_SIZE(CodeBlob);
283 GEN_SIZE(BufferBlob);
284 GEN_SIZE(SingletonBlob);
285 GEN_SIZE(RuntimeStub);
286 GEN_SIZE(SafepointBlob);
287
288 gen_epilogue(gen_variant);
289 printf("\n");
290
291 fflush(stdout);
292 return 0;
293 }
294
295 const char *HELP =
296 "HELP: generateJvmOffsets {-header | -index | -table} \n";
297
298 int main(int argc, const char *argv[]) {
299 GEN_variant gen_var;
300
301 if (argc != 2) {
302 printf("%s", HELP);
303 return 1;
304 }
305
306 if (0 == strcmp(argv[1], "-header")) {
307 gen_var = GEN_OFFSET;
308 }
309 else if (0 == strcmp(argv[1], "-index")) {
310 gen_var = GEN_INDEX;
311 }
312 else if (0 == strcmp(argv[1], "-table")) {
313 gen_var = GEN_TABLE;
314 }
315 else {
316 printf("%s", HELP);
317 return 1;
318 }
319 return generateJvmOffsets(gen_var);
320 }