98 static_assert( 1 == sizeof( jboolean), "wrong size for basic type");
99 static_assert( 8 == sizeof( jlong), "wrong size for basic type");
100 static_assert( 4 == sizeof( jfloat), "wrong size for basic type");
101 static_assert( 8 == sizeof( jdouble), "wrong size for basic type");
102 static_assert( 1 == sizeof( u1), "wrong size for basic type");
103 static_assert( 2 == sizeof( u2), "wrong size for basic type");
104 static_assert( 4 == sizeof( u4), "wrong size for basic type");
105 static_assert(wordSize == BytesPerWord, "should be the same since they're used interchangeably");
106 static_assert(wordSize == HeapWordSize, "should be the same since they're also used interchangeably");
107
108 assert(signature_constants_sane(), "");
109
110 int num_type_chars = 0;
111 for (int i = 0; i < 99; i++) {
112 if (type2char((BasicType)i) != 0) {
113 assert(char2type(type2char((BasicType)i)) == i, "proper inverses");
114 assert(Signature::basic_type(type2char((BasicType)i)) == i, "proper inverses");
115 num_type_chars++;
116 }
117 }
118 assert(num_type_chars == 11, "must have tested the right number of mappings");
119 assert(char2type(0) == T_ILLEGAL, "correct illegality");
120
121 {
122 for (int i = T_BOOLEAN; i <= T_CONFLICT; i++) {
123 BasicType vt = (BasicType)i;
124 BasicType ft = type2field[vt];
125 switch (vt) {
126 // the following types might plausibly show up in memory layouts:
127 case T_BOOLEAN:
128 case T_BYTE:
129 case T_CHAR:
130 case T_SHORT:
131 case T_INT:
132 case T_FLOAT:
133 case T_DOUBLE:
134 case T_LONG:
135 case T_OBJECT:
136 case T_ADDRESS: // random raw pointer
137 case T_METADATA: // metadata pointer
138 case T_NARROWOOP: // compressed pointer
180 os::java_to_os_priority[10] = JavaPriority10_To_OSPriority;
181
182 // Set the size of basic types here (after argument parsing but before
183 // stub generation).
184 if (UseCompressedOops) {
185 // Size info for oops within java objects is fixed
186 heapOopSize = jintSize;
187 LogBytesPerHeapOop = LogBytesPerInt;
188 LogBitsPerHeapOop = LogBitsPerInt;
189 BytesPerHeapOop = BytesPerInt;
190 BitsPerHeapOop = BitsPerInt;
191 } else {
192 heapOopSize = oopSize;
193 LogBytesPerHeapOop = LogBytesPerWord;
194 LogBitsPerHeapOop = LogBitsPerWord;
195 BytesPerHeapOop = BytesPerWord;
196 BitsPerHeapOop = BitsPerWord;
197 }
198 _type2aelembytes[T_OBJECT] = heapOopSize;
199 _type2aelembytes[T_ARRAY] = heapOopSize;
200 }
201
202
203 // Map BasicType to signature character
204 char type2char_tab[T_CONFLICT+1] = {
205 0, 0, 0, 0,
206 JVM_SIGNATURE_BOOLEAN, JVM_SIGNATURE_CHAR,
207 JVM_SIGNATURE_FLOAT, JVM_SIGNATURE_DOUBLE,
208 JVM_SIGNATURE_BYTE, JVM_SIGNATURE_SHORT,
209 JVM_SIGNATURE_INT, JVM_SIGNATURE_LONG,
210 JVM_SIGNATURE_CLASS, JVM_SIGNATURE_ARRAY,
211 JVM_SIGNATURE_VOID, 0,
212 0, 0, 0, 0
213 };
214
215 // Map BasicType to Java type name
216 const char* type2name_tab[T_CONFLICT+1] = {
217 nullptr, nullptr, nullptr, nullptr,
218 "boolean",
219 "char",
220 "float",
221 "double",
222 "byte",
223 "short",
224 "int",
225 "long",
226 "object",
227 "array",
228 "void",
229 "*address*",
230 "*narrowoop*",
231 "*metadata*",
232 "*narrowklass*",
233 "*conflict*"
234 };
235 const char* type2name(BasicType t) {
236 if (t < ARRAY_SIZE(type2name_tab)) {
237 return type2name_tab[t];
238 } else if (t == T_ILLEGAL) {
239 return "*illegal*";
240 } else {
241 fatal("invalid type %d", t);
242 return "invalid type";
243 }
244 }
245
246
247
248 BasicType name2type(const char* name) {
249 for (int i = T_BOOLEAN; i <= T_VOID; i++) {
250 BasicType t = (BasicType)i;
251 if (type2name_tab[t] != nullptr && 0 == strcmp(type2name_tab[t], name))
252 return t;
253 }
254 return T_ILLEGAL;
255 }
256
257 // Map BasicType to size in words
258 int type2size[T_CONFLICT+1]={ -1, 0, 0, 0, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 0, 1, 1, 1, 1, -1};
259
260 BasicType type2field[T_CONFLICT+1] = {
261 (BasicType)0, // 0,
262 (BasicType)0, // 1,
263 (BasicType)0, // 2,
264 (BasicType)0, // 3,
265 T_BOOLEAN, // T_BOOLEAN = 4,
266 T_CHAR, // T_CHAR = 5,
267 T_FLOAT, // T_FLOAT = 6,
268 T_DOUBLE, // T_DOUBLE = 7,
269 T_BYTE, // T_BYTE = 8,
270 T_SHORT, // T_SHORT = 9,
271 T_INT, // T_INT = 10,
272 T_LONG, // T_LONG = 11,
273 T_OBJECT, // T_OBJECT = 12,
274 T_OBJECT, // T_ARRAY = 13,
275 T_VOID, // T_VOID = 14,
276 T_ADDRESS, // T_ADDRESS = 15,
277 T_NARROWOOP, // T_NARROWOOP= 16,
278 T_METADATA, // T_METADATA = 17,
279 T_NARROWKLASS, // T_NARROWKLASS = 18,
280 T_CONFLICT // T_CONFLICT = 19,
281 };
282
283
284 BasicType type2wfield[T_CONFLICT+1] = {
285 (BasicType)0, // 0,
286 (BasicType)0, // 1,
287 (BasicType)0, // 2,
288 (BasicType)0, // 3,
289 T_INT, // T_BOOLEAN = 4,
290 T_INT, // T_CHAR = 5,
291 T_FLOAT, // T_FLOAT = 6,
292 T_DOUBLE, // T_DOUBLE = 7,
293 T_INT, // T_BYTE = 8,
294 T_INT, // T_SHORT = 9,
295 T_INT, // T_INT = 10,
296 T_LONG, // T_LONG = 11,
297 T_OBJECT, // T_OBJECT = 12,
298 T_OBJECT, // T_ARRAY = 13,
299 T_VOID, // T_VOID = 14,
300 T_ADDRESS, // T_ADDRESS = 15,
301 T_NARROWOOP, // T_NARROWOOP = 16,
302 T_METADATA, // T_METADATA = 17,
303 T_NARROWKLASS, // T_NARROWKLASS = 18,
304 T_CONFLICT // T_CONFLICT = 19,
305 };
306
307
308 int _type2aelembytes[T_CONFLICT+1] = {
309 0, // 0
310 0, // 1
311 0, // 2
312 0, // 3
313 T_BOOLEAN_aelem_bytes, // T_BOOLEAN = 4,
314 T_CHAR_aelem_bytes, // T_CHAR = 5,
315 T_FLOAT_aelem_bytes, // T_FLOAT = 6,
316 T_DOUBLE_aelem_bytes, // T_DOUBLE = 7,
317 T_BYTE_aelem_bytes, // T_BYTE = 8,
318 T_SHORT_aelem_bytes, // T_SHORT = 9,
319 T_INT_aelem_bytes, // T_INT = 10,
320 T_LONG_aelem_bytes, // T_LONG = 11,
321 T_OBJECT_aelem_bytes, // T_OBJECT = 12,
322 T_ARRAY_aelem_bytes, // T_ARRAY = 13,
323 0, // T_VOID = 14,
324 T_OBJECT_aelem_bytes, // T_ADDRESS = 15,
325 T_NARROWOOP_aelem_bytes, // T_NARROWOOP= 16,
326 T_OBJECT_aelem_bytes, // T_METADATA = 17,
327 T_NARROWKLASS_aelem_bytes, // T_NARROWKLASS= 18,
328 0 // T_CONFLICT = 19,
329 };
330
331 #ifdef ASSERT
332 int type2aelembytes(BasicType t, bool allow_address) {
333 assert((allow_address || t != T_ADDRESS) && t <= T_CONFLICT, "unexpected basic type");
334 return _type2aelembytes[t];
335 }
336 #endif
337
338 // Support for 64-bit integer arithmetic
339
340 // The following code is mostly taken from JVM typedefs_md.h and system_md.c
341
342 static const jlong high_bit = (jlong)1 << (jlong)63;
343 static const jlong other_bits = ~high_bit;
344
345 jlong float2long(jfloat f) {
346 jlong tmp = (jlong) f;
347 if (tmp != high_bit) {
348 return tmp;
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98 static_assert( 1 == sizeof( jboolean), "wrong size for basic type");
99 static_assert( 8 == sizeof( jlong), "wrong size for basic type");
100 static_assert( 4 == sizeof( jfloat), "wrong size for basic type");
101 static_assert( 8 == sizeof( jdouble), "wrong size for basic type");
102 static_assert( 1 == sizeof( u1), "wrong size for basic type");
103 static_assert( 2 == sizeof( u2), "wrong size for basic type");
104 static_assert( 4 == sizeof( u4), "wrong size for basic type");
105 static_assert(wordSize == BytesPerWord, "should be the same since they're used interchangeably");
106 static_assert(wordSize == HeapWordSize, "should be the same since they're also used interchangeably");
107
108 assert(signature_constants_sane(), "");
109
110 int num_type_chars = 0;
111 for (int i = 0; i < 99; i++) {
112 if (type2char((BasicType)i) != 0) {
113 assert(char2type(type2char((BasicType)i)) == i, "proper inverses");
114 assert(Signature::basic_type(type2char((BasicType)i)) == i, "proper inverses");
115 num_type_chars++;
116 }
117 }
118 assert(num_type_chars == 12, "must have tested the right number of mappings");
119 assert(char2type(0) == T_ILLEGAL, "correct illegality");
120
121 {
122 for (int i = T_BOOLEAN; i <= T_CONFLICT; i++) {
123 BasicType vt = (BasicType)i;
124 BasicType ft = type2field[vt];
125 switch (vt) {
126 // the following types might plausibly show up in memory layouts:
127 case T_BOOLEAN:
128 case T_BYTE:
129 case T_CHAR:
130 case T_SHORT:
131 case T_INT:
132 case T_FLOAT:
133 case T_DOUBLE:
134 case T_LONG:
135 case T_OBJECT:
136 case T_ADDRESS: // random raw pointer
137 case T_METADATA: // metadata pointer
138 case T_NARROWOOP: // compressed pointer
180 os::java_to_os_priority[10] = JavaPriority10_To_OSPriority;
181
182 // Set the size of basic types here (after argument parsing but before
183 // stub generation).
184 if (UseCompressedOops) {
185 // Size info for oops within java objects is fixed
186 heapOopSize = jintSize;
187 LogBytesPerHeapOop = LogBytesPerInt;
188 LogBitsPerHeapOop = LogBitsPerInt;
189 BytesPerHeapOop = BytesPerInt;
190 BitsPerHeapOop = BitsPerInt;
191 } else {
192 heapOopSize = oopSize;
193 LogBytesPerHeapOop = LogBytesPerWord;
194 LogBitsPerHeapOop = LogBitsPerWord;
195 BytesPerHeapOop = BytesPerWord;
196 BitsPerHeapOop = BitsPerWord;
197 }
198 _type2aelembytes[T_OBJECT] = heapOopSize;
199 _type2aelembytes[T_ARRAY] = heapOopSize;
200 _type2aelembytes[T_FLAT_ELEMENT] = heapOopSize;
201 }
202
203
204 // Map BasicType to signature character
205 char type2char_tab[T_CONFLICT+1] = {
206 0, 0, 0, 0,
207 JVM_SIGNATURE_BOOLEAN, JVM_SIGNATURE_CHAR,
208 JVM_SIGNATURE_FLOAT, JVM_SIGNATURE_DOUBLE,
209 JVM_SIGNATURE_BYTE, JVM_SIGNATURE_SHORT,
210 JVM_SIGNATURE_INT, JVM_SIGNATURE_LONG,
211 JVM_SIGNATURE_CLASS, JVM_SIGNATURE_ARRAY,
212 JVM_SIGNATURE_FLAT_ELEMENT, JVM_SIGNATURE_VOID,
213 0, 0, 0, 0, 0
214 };
215
216 // Map BasicType to Java type name
217 const char* type2name_tab[T_CONFLICT+1] = {
218 nullptr, nullptr, nullptr, nullptr,
219 "boolean",
220 "char",
221 "float",
222 "double",
223 "byte",
224 "short",
225 "int",
226 "long",
227 "object",
228 "array",
229 "inline_type",
230 "void",
231 "*address*",
232 "*narrowoop*",
233 "*metadata*",
234 "*narrowklass*",
235 "*conflict*"
236 };
237 const char* type2name(BasicType t) {
238 if (t < ARRAY_SIZE(type2name_tab)) {
239 return type2name_tab[t];
240 } else if (t == T_ILLEGAL) {
241 return "*illegal*";
242 } else {
243 fatal("invalid type %d", t);
244 return "invalid type";
245 }
246 }
247
248
249
250 BasicType name2type(const char* name) {
251 for (int i = T_BOOLEAN; i <= T_VOID; i++) {
252 BasicType t = (BasicType)i;
253 if (type2name_tab[t] != nullptr && 0 == strcmp(type2name_tab[t], name))
254 return t;
255 }
256 return T_ILLEGAL;
257 }
258
259 // Map BasicType to size in words
260 int type2size[T_CONFLICT+1]={ -1, 0, 0, 0, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 0, 1, 1, 1, 1, -1};
261
262 BasicType type2field[T_CONFLICT+1] = {
263 (BasicType)0, // 0,
264 (BasicType)0, // 1,
265 (BasicType)0, // 2,
266 (BasicType)0, // 3,
267 T_BOOLEAN, // T_BOOLEAN = 4,
268 T_CHAR, // T_CHAR = 5,
269 T_FLOAT, // T_FLOAT = 6,
270 T_DOUBLE, // T_DOUBLE = 7,
271 T_BYTE, // T_BYTE = 8,
272 T_SHORT, // T_SHORT = 9,
273 T_INT, // T_INT = 10,
274 T_LONG, // T_LONG = 11,
275 T_OBJECT, // T_OBJECT = 12,
276 T_OBJECT, // T_ARRAY = 13,
277 T_OBJECT, // T_PRIMITIVE_OBJECT = 14,
278 T_VOID, // T_VOID = 15,
279 T_ADDRESS, // T_ADDRESS = 16,
280 T_NARROWOOP, // T_NARROWOOP= 17,
281 T_METADATA, // T_METADATA = 18,
282 T_NARROWKLASS, // T_NARROWKLASS = 19,
283 T_CONFLICT // T_CONFLICT = 20
284 };
285
286
287 BasicType type2wfield[T_CONFLICT+1] = {
288 (BasicType)0, // 0,
289 (BasicType)0, // 1,
290 (BasicType)0, // 2,
291 (BasicType)0, // 3,
292 T_INT, // T_BOOLEAN = 4,
293 T_INT, // T_CHAR = 5,
294 T_FLOAT, // T_FLOAT = 6,
295 T_DOUBLE, // T_DOUBLE = 7,
296 T_INT, // T_BYTE = 8,
297 T_INT, // T_SHORT = 9,
298 T_INT, // T_INT = 10,
299 T_LONG, // T_LONG = 11,
300 T_OBJECT, // T_OBJECT = 12,
301 T_OBJECT, // T_ARRAY = 13,
302 T_OBJECT, // T_PRIMITIVE_OBJECT = 14,
303 T_VOID, // T_VOID = 15,
304 T_ADDRESS, // T_ADDRESS = 16,
305 T_NARROWOOP, // T_NARROWOOP = 17,
306 T_METADATA, // T_METADATA = 18,
307 T_NARROWKLASS, // T_NARROWKLASS = 19,
308 T_CONFLICT // T_CONFLICT = 20
309 };
310
311
312 int _type2aelembytes[T_CONFLICT+1] = {
313 0, // 0
314 0, // 1
315 0, // 2
316 0, // 3
317 T_BOOLEAN_aelem_bytes, // T_BOOLEAN = 4,
318 T_CHAR_aelem_bytes, // T_CHAR = 5,
319 T_FLOAT_aelem_bytes, // T_FLOAT = 6,
320 T_DOUBLE_aelem_bytes, // T_DOUBLE = 7,
321 T_BYTE_aelem_bytes, // T_BYTE = 8,
322 T_SHORT_aelem_bytes, // T_SHORT = 9,
323 T_INT_aelem_bytes, // T_INT = 10,
324 T_LONG_aelem_bytes, // T_LONG = 11,
325 T_OBJECT_aelem_bytes, // T_OBJECT = 12,
326 T_ARRAY_aelem_bytes, // T_ARRAY = 13,
327 T_FLAT_ELEMENT_aelem_bytes, // T_PRIMITIVE_OBJECT = 14,
328 0, // T_VOID = 15,
329 T_OBJECT_aelem_bytes, // T_ADDRESS = 16,
330 T_NARROWOOP_aelem_bytes, // T_NARROWOOP= 17,
331 T_OBJECT_aelem_bytes, // T_METADATA = 18,
332 T_NARROWKLASS_aelem_bytes, // T_NARROWKLASS= 19,
333 0 // T_CONFLICT = 20
334 };
335
336 #ifdef ASSERT
337 int type2aelembytes(BasicType t, bool allow_address) {
338 assert((allow_address || t != T_ADDRESS) && t <= T_CONFLICT, "unexpected basic type");
339 return _type2aelembytes[t];
340 }
341 #endif
342
343 // Support for 64-bit integer arithmetic
344
345 // The following code is mostly taken from JVM typedefs_md.h and system_md.c
346
347 static const jlong high_bit = (jlong)1 << (jlong)63;
348 static const jlong other_bits = ~high_bit;
349
350 jlong float2long(jfloat f) {
351 jlong tmp = (jlong) f;
352 if (tmp != high_bit) {
353 return tmp;
|