1 /*
2 * Copyright (c) 2003, 2019, 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 "memory/heap.hpp"
44 #include "oops/compressedOops.hpp"
45 #include "runtime/vmStructs.hpp"
46
47 typedef enum GEN_variant {
48 GEN_OFFSET = 0,
49 GEN_INDEX = 1,
50 GEN_TABLE = 2
51 } GEN_variant;
52
53 #ifdef COMPILER1
54 #ifdef ASSERT
55
56 /*
57 * To avoid the most part of potential link errors
58 * we link this program with -z nodefs .
59 *
60 * But for 'debug1' and 'fastdebug1' we still have to provide
61 * a particular workaround for the following symbols below.
62 * It will be good to find out a generic way in the future.
63 */
64
65 #pragma weak tty
66
67 #if defined(i386) || defined(__i386) || defined(__amd64)
68 #pragma weak noreg
69 #endif /* i386 */
70
71 LIR_Opr LIR_OprFact::illegalOpr = (LIR_Opr) 0;
72
73 address StubRoutines::_call_stub_return_address = NULL;
74
75 StubQueue* AbstractInterpreter::_code = NULL;
76
77 #endif /* ASSERT */
78 #endif /* COMPILER1 */
79
80 #define GEN_OFFS_NAME(Type,Name,OutputType) \
81 switch(gen_variant) { \
82 case GEN_OFFSET: \
83 printf("#define OFFSET_%-33s %ld\n", \
84 #OutputType #Name, offset_of(Type, Name)); \
85 break; \
86 case GEN_INDEX: \
87 printf("#define IDX_OFFSET_%-33s %d\n", \
88 #OutputType #Name, index++); \
89 break; \
90 case GEN_TABLE: \
91 printf("\tOFFSET_%s,\n", #OutputType #Name); \
92 break; \
93 }
94
95 #define GEN_OFFS(Type,Name) \
96 GEN_OFFS_NAME(Type,Name,Type)
97
98 #define GEN_SIZE(Type) \
99 switch(gen_variant) { \
100 case GEN_OFFSET: \
101 printf("#define SIZE_%-35s %ld\n", \
102 #Type, sizeof(Type)); \
103 break; \
104 case GEN_INDEX: \
105 printf("#define IDX_SIZE_%-35s %d\n", \
106 #Type, index++); \
107 break; \
108 case GEN_TABLE: \
109 printf("\tSIZE_%s,\n", #Type); \
110 break; \
111 }
112
113 #define GEN_VALUE(String,Value) \
114 switch(gen_variant) { \
115 case GEN_OFFSET: \
116 printf("#define %-40s %d\n", #String, Value); \
117 break; \
118 case GEN_INDEX: \
119 printf("#define IDX_%-40s %d\n", #String, index++); \
120 break; \
121 case GEN_TABLE: \
122 printf("\t" #String ",\n"); \
123 break; \
124 }
125
126 void gen_prologue(GEN_variant gen_variant) {
127 const char *suffix = "Undefined-Suffix";
128
129 switch(gen_variant) {
130 case GEN_OFFSET: suffix = ".h"; break;
131 case GEN_INDEX: suffix = "Index.h"; break;
132 case GEN_TABLE: suffix = ".cpp"; break;
133 }
134
135 printf("/*\n");
136 printf(" * JvmOffsets%s !!!DO NOT EDIT!!! \n", suffix);
137 printf(" * The generateJvmOffsets program generates this file!\n");
138 printf(" */\n\n");
139 switch(gen_variant) {
140
141 case GEN_OFFSET:
142 case GEN_INDEX:
143 break;
144
145 case GEN_TABLE:
146 printf("#include \"JvmOffsets.h\"\n");
147 printf("\n");
148 printf("int __JvmOffsets[] = {\n");
149 break;
150 }
151 }
152
153 void gen_epilogue(GEN_variant gen_variant) {
154 if (gen_variant != GEN_TABLE) {
155 return;
156 }
157 printf("};\n\n");
158 return;
159 }
160
161 int generateJvmOffsets(GEN_variant gen_variant) {
162 int index = 0; /* It is used to generate JvmOffsetsIndex.h */
163 int pointer_size = sizeof(void *);
164 int data_model = (pointer_size == 4) ? PR_MODEL_ILP32 : PR_MODEL_LP64;
165
166 gen_prologue(gen_variant);
167
168 GEN_VALUE(DATA_MODEL, data_model);
169 GEN_VALUE(POINTER_SIZE, pointer_size);
170 #if defined(TIERED)
171 GEN_VALUE(COMPILER, 3);
172 #elif COMPILER1
173 GEN_VALUE(COMPILER, 1);
174 #elif COMPILER2
175 GEN_VALUE(COMPILER, 2);
176 #else
177 GEN_VALUE(COMPILER, 0);
178 #endif // COMPILER1 && COMPILER2
179 printf("\n");
180
181 GEN_OFFS(CollectedHeap, _reserved);
182 GEN_OFFS(MemRegion, _start);
183 GEN_OFFS(MemRegion, _word_size);
184 GEN_SIZE(HeapWord);
185 printf("\n");
186
187 GEN_OFFS(VMStructEntry, typeName);
188 GEN_OFFS(VMStructEntry, fieldName);
189 GEN_OFFS(VMStructEntry, address);
190 GEN_SIZE(VMStructEntry);
191 printf("\n");
192
193 GEN_VALUE(MAX_METHOD_CODE_SIZE, max_method_code_size);
194 #if defined(sparc) || defined(__sparc)
195 GEN_VALUE(OFFSET_interpreter_frame_method, 2 * pointer_size); /* L2 in saved window */
196 GEN_VALUE(OFFSET_interpreter_frame_sender_sp, 13 * pointer_size); /* I5 in saved window */
197 // Fake value for consistency. It is not going to be used.
198 GEN_VALUE(OFFSET_interpreter_frame_bcp_offset, 0xFFFF);
199 #elif defined(i386) || defined(__i386) || defined(__amd64)
200 GEN_VALUE(OFFSET_interpreter_frame_sender_sp, -1 * pointer_size);
201 GEN_VALUE(OFFSET_interpreter_frame_method, -3 * pointer_size);
202 GEN_VALUE(OFFSET_interpreter_frame_bcp_offset, -7 * pointer_size);
203 #endif
204
205 GEN_OFFS(Klass, _name);
206 GEN_OFFS(ConstantPool, _pool_holder);
207 printf("\n");
208
209 GEN_VALUE(OFFSET_HeapBlockHeader_used, (int) offset_of(HeapBlock::Header, _used));
210 GEN_OFFS(oopDesc, _metadata);
211 printf("\n");
212
213 GEN_VALUE(AccessFlags_NATIVE, JVM_ACC_NATIVE);
214 GEN_VALUE(ConstMethod_has_linenumber_table, ConstMethod::_has_linenumber_table);
215 GEN_OFFS(AccessFlags, _flags);
216 GEN_OFFS(Symbol, _length);
217 GEN_OFFS(Symbol, _body);
218 printf("\n");
219
220 GEN_OFFS(Method, _constMethod);
221 GEN_OFFS(Method, _access_flags);
222 printf("\n");
223
224 GEN_OFFS(ConstMethod, _constants);
225 GEN_OFFS(ConstMethod, _flags);
226 GEN_OFFS(ConstMethod, _code_size);
227 GEN_OFFS(ConstMethod, _name_index);
228 GEN_OFFS(ConstMethod, _signature_index);
229 printf("\n");
230
231 GEN_OFFS(CodeHeap, _memory);
232 GEN_OFFS(CodeHeap, _segmap);
233 GEN_OFFS(CodeHeap, _log2_segment_size);
234 printf("\n");
235
236 GEN_OFFS(VirtualSpace, _low_boundary);
237 GEN_OFFS(VirtualSpace, _high_boundary);
238 GEN_OFFS(VirtualSpace, _low);
239 GEN_OFFS(VirtualSpace, _high);
240 printf("\n");
241
242 /* We need to use different names here because of the template parameter */
243 GEN_OFFS_NAME(GrowableArray<CodeHeap*>, _data, GrowableArray_CodeHeap);
244 GEN_OFFS_NAME(GrowableArray<CodeHeap*>, _len, GrowableArray_CodeHeap);
245 printf("\n");
246
247 GEN_OFFS(CodeBlob, _name);
248 GEN_OFFS(CodeBlob, _header_size);
249 GEN_OFFS(CodeBlob, _content_begin);
250 GEN_OFFS(CodeBlob, _code_begin);
251 GEN_OFFS(CodeBlob, _code_end);
252 GEN_OFFS(CodeBlob, _data_offset);
253 GEN_OFFS(CodeBlob, _frame_size);
254 printf("\n");
255
256 GEN_OFFS(nmethod, _method);
257 GEN_OFFS(nmethod, _dependencies_offset);
258 GEN_OFFS(nmethod, _metadata_offset);
259 GEN_OFFS(nmethod, _scopes_data_begin);
260 GEN_OFFS(nmethod, _scopes_pcs_offset);
261 GEN_OFFS(nmethod, _handler_table_offset);
262 GEN_OFFS(nmethod, _deopt_handler_begin);
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 }
295
296 const char *HELP =
297 "HELP: generateJvmOffsets {-header | -index | -table} \n";
298
299 int main(int argc, const char *argv[]) {
300 GEN_variant gen_var;
301
302 if (argc != 2) {
303 printf("%s", HELP);
304 return 1;
305 }
306
307 if (0 == strcmp(argv[1], "-header")) {
308 gen_var = GEN_OFFSET;
309 }
310 else if (0 == strcmp(argv[1], "-index")) {
311 gen_var = GEN_INDEX;
312 }
313 else if (0 == strcmp(argv[1], "-table")) {
314 gen_var = GEN_TABLE;
315 }
316 else {
317 printf("%s", HELP);
318 return 1;
319 }
320 return generateJvmOffsets(gen_var);
321 }