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annotate src/share/vm/utilities/globalDefinitions.hpp @ 1832:22e4420d19f7
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date | Wed, 06 Oct 2010 14:18:32 -0700 |
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0 | 1 /* |
1665 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // This file holds all globally used constants & types, class (forward) | |
26 // declarations and a few frequently used utility functions. | |
27 | |
28 //---------------------------------------------------------------------------------------------------- | |
29 // Constants | |
30 | |
31 const int LogBytesPerShort = 1; | |
32 const int LogBytesPerInt = 2; | |
33 #ifdef _LP64 | |
34 const int LogBytesPerWord = 3; | |
35 #else | |
36 const int LogBytesPerWord = 2; | |
37 #endif | |
38 const int LogBytesPerLong = 3; | |
39 | |
40 const int BytesPerShort = 1 << LogBytesPerShort; | |
41 const int BytesPerInt = 1 << LogBytesPerInt; | |
42 const int BytesPerWord = 1 << LogBytesPerWord; | |
43 const int BytesPerLong = 1 << LogBytesPerLong; | |
44 | |
45 const int LogBitsPerByte = 3; | |
46 const int LogBitsPerShort = LogBitsPerByte + LogBytesPerShort; | |
47 const int LogBitsPerInt = LogBitsPerByte + LogBytesPerInt; | |
48 const int LogBitsPerWord = LogBitsPerByte + LogBytesPerWord; | |
49 const int LogBitsPerLong = LogBitsPerByte + LogBytesPerLong; | |
50 | |
51 const int BitsPerByte = 1 << LogBitsPerByte; | |
52 const int BitsPerShort = 1 << LogBitsPerShort; | |
53 const int BitsPerInt = 1 << LogBitsPerInt; | |
54 const int BitsPerWord = 1 << LogBitsPerWord; | |
55 const int BitsPerLong = 1 << LogBitsPerLong; | |
56 | |
57 const int WordAlignmentMask = (1 << LogBytesPerWord) - 1; | |
58 const int LongAlignmentMask = (1 << LogBytesPerLong) - 1; | |
59 | |
60 const int WordsPerLong = 2; // Number of stack entries for longs | |
61 | |
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62 const int oopSize = sizeof(char*); // Full-width oop |
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63 extern int heapOopSize; // Oop within a java object |
0 | 64 const int wordSize = sizeof(char*); |
65 const int longSize = sizeof(jlong); | |
66 const int jintSize = sizeof(jint); | |
67 const int size_tSize = sizeof(size_t); | |
68 | |
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69 const int BytesPerOop = BytesPerWord; // Full-width oop |
0 | 70 |
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71 extern int LogBytesPerHeapOop; // Oop within a java object |
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72 extern int LogBitsPerHeapOop; |
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73 extern int BytesPerHeapOop; |
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74 extern int BitsPerHeapOop; |
0 | 75 |
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76 // Oop encoding heap max |
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77 extern uint64_t OopEncodingHeapMax; |
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78 |
0 | 79 const int BitsPerJavaInteger = 32; |
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80 const int BitsPerJavaLong = 64; |
0 | 81 const int BitsPerSize_t = size_tSize * BitsPerByte; |
82 | |
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83 // Size of a char[] needed to represent a jint as a string in decimal. |
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84 const int jintAsStringSize = 12; |
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85 |
0 | 86 // In fact this should be |
87 // log2_intptr(sizeof(class JavaThread)) - log2_intptr(64); | |
88 // see os::set_memory_serialize_page() | |
89 #ifdef _LP64 | |
90 const int SerializePageShiftCount = 4; | |
91 #else | |
92 const int SerializePageShiftCount = 3; | |
93 #endif | |
94 | |
95 // An opaque struct of heap-word width, so that HeapWord* can be a generic | |
96 // pointer into the heap. We require that object sizes be measured in | |
97 // units of heap words, so that that | |
98 // HeapWord* hw; | |
99 // hw += oop(hw)->foo(); | |
100 // works, where foo is a method (like size or scavenge) that returns the | |
101 // object size. | |
102 class HeapWord { | |
103 friend class VMStructs; | |
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104 private: |
0 | 105 char* i; |
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106 #ifndef PRODUCT |
263
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107 public: |
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108 char* value() { return i; } |
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109 #endif |
0 | 110 }; |
111 | |
112 // HeapWordSize must be 2^LogHeapWordSize. | |
113
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113 const int HeapWordSize = sizeof(HeapWord); |
0 | 114 #ifdef _LP64 |
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115 const int LogHeapWordSize = 3; |
0 | 116 #else |
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117 const int LogHeapWordSize = 2; |
0 | 118 #endif |
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119 const int HeapWordsPerLong = BytesPerLong / HeapWordSize; |
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120 const int LogHeapWordsPerLong = LogBytesPerLong - LogHeapWordSize; |
0 | 121 |
122 // The larger HeapWordSize for 64bit requires larger heaps | |
123 // for the same application running in 64bit. See bug 4967770. | |
124 // The minimum alignment to a heap word size is done. Other | |
125 // parts of the memory system may required additional alignment | |
126 // and are responsible for those alignments. | |
127 #ifdef _LP64 | |
128 #define ScaleForWordSize(x) align_size_down_((x) * 13 / 10, HeapWordSize) | |
129 #else | |
130 #define ScaleForWordSize(x) (x) | |
131 #endif | |
132 | |
133 // The minimum number of native machine words necessary to contain "byte_size" | |
134 // bytes. | |
135 inline size_t heap_word_size(size_t byte_size) { | |
136 return (byte_size + (HeapWordSize-1)) >> LogHeapWordSize; | |
137 } | |
138 | |
139 | |
140 const size_t K = 1024; | |
141 const size_t M = K*K; | |
142 const size_t G = M*K; | |
143 const size_t HWperKB = K / sizeof(HeapWord); | |
144 | |
1261 | 145 const size_t LOG_K = 10; |
146 const size_t LOG_M = 2 * LOG_K; | |
147 const size_t LOG_G = 2 * LOG_M; | |
148 | |
0 | 149 const jint min_jint = (jint)1 << (sizeof(jint)*BitsPerByte-1); // 0x80000000 == smallest jint |
150 const jint max_jint = (juint)min_jint - 1; // 0x7FFFFFFF == largest jint | |
151 | |
152 // Constants for converting from a base unit to milli-base units. For | |
153 // example from seconds to milliseconds and microseconds | |
154 | |
155 const int MILLIUNITS = 1000; // milli units per base unit | |
156 const int MICROUNITS = 1000000; // micro units per base unit | |
157 const int NANOUNITS = 1000000000; // nano units per base unit | |
158 | |
159 inline const char* proper_unit_for_byte_size(size_t s) { | |
160 if (s >= 10*M) { | |
161 return "M"; | |
162 } else if (s >= 10*K) { | |
163 return "K"; | |
164 } else { | |
165 return "B"; | |
166 } | |
167 } | |
168 | |
169 inline size_t byte_size_in_proper_unit(size_t s) { | |
170 if (s >= 10*M) { | |
171 return s/M; | |
172 } else if (s >= 10*K) { | |
173 return s/K; | |
174 } else { | |
175 return s; | |
176 } | |
177 } | |
178 | |
179 | |
180 //---------------------------------------------------------------------------------------------------- | |
181 // VM type definitions | |
182 | |
183 // intx and uintx are the 'extended' int and 'extended' unsigned int types; | |
184 // they are 32bit wide on a 32-bit platform, and 64bit wide on a 64bit platform. | |
185 | |
186 typedef intptr_t intx; | |
187 typedef uintptr_t uintx; | |
188 | |
189 const intx min_intx = (intx)1 << (sizeof(intx)*BitsPerByte-1); | |
190 const intx max_intx = (uintx)min_intx - 1; | |
191 const uintx max_uintx = (uintx)-1; | |
192 | |
193 // Table of values: | |
194 // sizeof intx 4 8 | |
195 // min_intx 0x80000000 0x8000000000000000 | |
196 // max_intx 0x7FFFFFFF 0x7FFFFFFFFFFFFFFF | |
197 // max_uintx 0xFFFFFFFF 0xFFFFFFFFFFFFFFFF | |
198 | |
199 typedef unsigned int uint; NEEDS_CLEANUP | |
200 | |
201 | |
202 //---------------------------------------------------------------------------------------------------- | |
203 // Java type definitions | |
204 | |
205 // All kinds of 'plain' byte addresses | |
206 typedef signed char s_char; | |
207 typedef unsigned char u_char; | |
208 typedef u_char* address; | |
209 typedef uintptr_t address_word; // unsigned integer which will hold a pointer | |
210 // except for some implementations of a C++ | |
211 // linkage pointer to function. Should never | |
212 // need one of those to be placed in this | |
213 // type anyway. | |
214 | |
215 // Utility functions to "portably" (?) bit twiddle pointers | |
216 // Where portable means keep ANSI C++ compilers quiet | |
217 | |
218 inline address set_address_bits(address x, int m) { return address(intptr_t(x) | m); } | |
219 inline address clear_address_bits(address x, int m) { return address(intptr_t(x) & ~m); } | |
220 | |
221 // Utility functions to "portably" make cast to/from function pointers. | |
222 | |
223 inline address_word mask_address_bits(address x, int m) { return address_word(x) & m; } | |
224 inline address_word castable_address(address x) { return address_word(x) ; } | |
225 inline address_word castable_address(void* x) { return address_word(x) ; } | |
226 | |
227 // Pointer subtraction. | |
228 // The idea here is to avoid ptrdiff_t, which is signed and so doesn't have | |
229 // the range we might need to find differences from one end of the heap | |
230 // to the other. | |
231 // A typical use might be: | |
232 // if (pointer_delta(end(), top()) >= size) { | |
233 // // enough room for an object of size | |
234 // ... | |
235 // and then additions like | |
236 // ... top() + size ... | |
237 // are safe because we know that top() is at least size below end(). | |
238 inline size_t pointer_delta(const void* left, | |
239 const void* right, | |
240 size_t element_size) { | |
241 return (((uintptr_t) left) - ((uintptr_t) right)) / element_size; | |
242 } | |
243 // A version specialized for HeapWord*'s. | |
244 inline size_t pointer_delta(const HeapWord* left, const HeapWord* right) { | |
245 return pointer_delta(left, right, sizeof(HeapWord)); | |
246 } | |
247 | |
248 // | |
249 // ANSI C++ does not allow casting from one pointer type to a function pointer | |
250 // directly without at best a warning. This macro accomplishes it silently | |
251 // In every case that is present at this point the value be cast is a pointer | |
252 // to a C linkage function. In somecase the type used for the cast reflects | |
253 // that linkage and a picky compiler would not complain. In other cases because | |
254 // there is no convenient place to place a typedef with extern C linkage (i.e | |
255 // a platform dependent header file) it doesn't. At this point no compiler seems | |
256 // picky enough to catch these instances (which are few). It is possible that | |
257 // using templates could fix these for all cases. This use of templates is likely | |
258 // so far from the middle of the road that it is likely to be problematic in | |
259 // many C++ compilers. | |
260 // | |
261 #define CAST_TO_FN_PTR(func_type, value) ((func_type)(castable_address(value))) | |
262 #define CAST_FROM_FN_PTR(new_type, func_ptr) ((new_type)((address_word)(func_ptr))) | |
263 | |
264 // Unsigned byte types for os and stream.hpp | |
265 | |
266 // Unsigned one, two, four and eigth byte quantities used for describing | |
267 // the .class file format. See JVM book chapter 4. | |
268 | |
269 typedef jubyte u1; | |
270 typedef jushort u2; | |
271 typedef juint u4; | |
272 typedef julong u8; | |
273 | |
274 const jubyte max_jubyte = (jubyte)-1; // 0xFF largest jubyte | |
275 const jushort max_jushort = (jushort)-1; // 0xFFFF largest jushort | |
276 const juint max_juint = (juint)-1; // 0xFFFFFFFF largest juint | |
277 const julong max_julong = (julong)-1; // 0xFF....FF largest julong | |
278 | |
279 //---------------------------------------------------------------------------------------------------- | |
280 // JVM spec restrictions | |
281 | |
282 const int max_method_code_size = 64*K - 1; // JVM spec, 2nd ed. section 4.8.1 (p.134) | |
283 | |
284 | |
285 //---------------------------------------------------------------------------------------------------- | |
286 // HotSwap - for JVMTI aka Class File Replacement and PopFrame | |
287 // | |
288 // Determines whether on-the-fly class replacement and frame popping are enabled. | |
289 | |
290 #define HOTSWAP | |
291 | |
292 //---------------------------------------------------------------------------------------------------- | |
293 // Object alignment, in units of HeapWords. | |
294 // | |
295 // Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and | |
296 // reference fields can be naturally aligned. | |
297 | |
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298 extern int MinObjAlignment; |
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299 extern int MinObjAlignmentInBytes; |
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300 extern int MinObjAlignmentInBytesMask; |
0 | 301 |
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302 extern int LogMinObjAlignment; |
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303 extern int LogMinObjAlignmentInBytes; |
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304 |
0 | 305 // Machine dependent stuff |
306 | |
307 #include "incls/_globalDefinitions_pd.hpp.incl" | |
308 | |
309 // The byte alignment to be used by Arena::Amalloc. See bugid 4169348. | |
310 // Note: this value must be a power of 2 | |
311 | |
312 #define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord) | |
313 | |
314 // Signed variants of alignment helpers. There are two versions of each, a macro | |
315 // for use in places like enum definitions that require compile-time constant | |
316 // expressions and a function for all other places so as to get type checking. | |
317 | |
318 #define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1)) | |
319 | |
320 inline intptr_t align_size_up(intptr_t size, intptr_t alignment) { | |
321 return align_size_up_(size, alignment); | |
322 } | |
323 | |
324 #define align_size_down_(size, alignment) ((size) & ~((alignment) - 1)) | |
325 | |
326 inline intptr_t align_size_down(intptr_t size, intptr_t alignment) { | |
327 return align_size_down_(size, alignment); | |
328 } | |
329 | |
330 // Align objects by rounding up their size, in HeapWord units. | |
331 | |
332 #define align_object_size_(size) align_size_up_(size, MinObjAlignment) | |
333 | |
334 inline intptr_t align_object_size(intptr_t size) { | |
335 return align_size_up(size, MinObjAlignment); | |
336 } | |
337 | |
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338 inline bool is_object_aligned(intptr_t addr) { |
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339 return addr == align_object_size(addr); |
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340 } |
0 | 341 |
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342 // Pad out certain offsets to jlong alignment, in HeapWord units. |
0 | 343 |
344 inline intptr_t align_object_offset(intptr_t offset) { | |
345 return align_size_up(offset, HeapWordsPerLong); | |
346 } | |
347 | |
1665 | 348 // The expected size in bytes of a cache line, used to pad data structures. |
349 #define DEFAULT_CACHE_LINE_SIZE 64 | |
350 | |
351 // Bytes needed to pad type to avoid cache-line sharing; alignment should be the | |
352 // expected cache line size (a power of two). The first addend avoids sharing | |
353 // when the start address is not a multiple of alignment; the second maintains | |
354 // alignment of starting addresses that happen to be a multiple. | |
355 #define PADDING_SIZE(type, alignment) \ | |
356 ((alignment) + align_size_up_(sizeof(type), alignment)) | |
357 | |
358 // Templates to create a subclass padded to avoid cache line sharing. These are | |
359 // effective only when applied to derived-most (leaf) classes. | |
360 | |
361 // When no args are passed to the base ctor. | |
362 template <class T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> | |
363 class Padded: public T { | |
364 private: | |
365 char _pad_buf_[PADDING_SIZE(T, alignment)]; | |
366 }; | |
367 | |
368 // When either 0 or 1 args may be passed to the base ctor. | |
369 template <class T, typename Arg1T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> | |
370 class Padded01: public T { | |
371 public: | |
372 Padded01(): T() { } | |
373 Padded01(Arg1T arg1): T(arg1) { } | |
374 private: | |
375 char _pad_buf_[PADDING_SIZE(T, alignment)]; | |
376 }; | |
0 | 377 |
378 //---------------------------------------------------------------------------------------------------- | |
379 // Utility macros for compilers | |
380 // used to silence compiler warnings | |
381 | |
382 #define Unused_Variable(var) var | |
383 | |
384 | |
385 //---------------------------------------------------------------------------------------------------- | |
386 // Miscellaneous | |
387 | |
388 // 6302670 Eliminate Hotspot __fabsf dependency | |
389 // All fabs() callers should call this function instead, which will implicitly | |
390 // convert the operand to double, avoiding a dependency on __fabsf which | |
391 // doesn't exist in early versions of Solaris 8. | |
392 inline double fabsd(double value) { | |
393 return fabs(value); | |
394 } | |
395 | |
396 inline jint low (jlong value) { return jint(value); } | |
397 inline jint high(jlong value) { return jint(value >> 32); } | |
398 | |
399 // the fancy casts are a hopefully portable way | |
400 // to do unsigned 32 to 64 bit type conversion | |
401 inline void set_low (jlong* value, jint low ) { *value &= (jlong)0xffffffff << 32; | |
402 *value |= (jlong)(julong)(juint)low; } | |
403 | |
404 inline void set_high(jlong* value, jint high) { *value &= (jlong)(julong)(juint)0xffffffff; | |
405 *value |= (jlong)high << 32; } | |
406 | |
407 inline jlong jlong_from(jint h, jint l) { | |
408 jlong result = 0; // initialization to avoid warning | |
409 set_high(&result, h); | |
410 set_low(&result, l); | |
411 return result; | |
412 } | |
413 | |
414 union jlong_accessor { | |
415 jint words[2]; | |
416 jlong long_value; | |
417 }; | |
418 | |
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419 void basic_types_init(); // cannot define here; uses assert |
0 | 420 |
421 | |
422 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
423 enum BasicType { | |
424 T_BOOLEAN = 4, | |
425 T_CHAR = 5, | |
426 T_FLOAT = 6, | |
427 T_DOUBLE = 7, | |
428 T_BYTE = 8, | |
429 T_SHORT = 9, | |
430 T_INT = 10, | |
431 T_LONG = 11, | |
432 T_OBJECT = 12, | |
433 T_ARRAY = 13, | |
434 T_VOID = 14, | |
435 T_ADDRESS = 15, | |
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436 T_NARROWOOP= 16, |
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437 T_CONFLICT = 17, // for stack value type with conflicting contents |
0 | 438 T_ILLEGAL = 99 |
439 }; | |
440 | |
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441 inline bool is_java_primitive(BasicType t) { |
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442 return T_BOOLEAN <= t && t <= T_LONG; |
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443 } |
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444 |
710 | 445 inline bool is_subword_type(BasicType t) { |
446 // these guys are processed exactly like T_INT in calling sequences: | |
447 return (t == T_BOOLEAN || t == T_CHAR || t == T_BYTE || t == T_SHORT); | |
448 } | |
449 | |
450 inline bool is_signed_subword_type(BasicType t) { | |
451 return (t == T_BYTE || t == T_SHORT); | |
452 } | |
453 | |
0 | 454 // Convert a char from a classfile signature to a BasicType |
455 inline BasicType char2type(char c) { | |
456 switch( c ) { | |
457 case 'B': return T_BYTE; | |
458 case 'C': return T_CHAR; | |
459 case 'D': return T_DOUBLE; | |
460 case 'F': return T_FLOAT; | |
461 case 'I': return T_INT; | |
462 case 'J': return T_LONG; | |
463 case 'S': return T_SHORT; | |
464 case 'Z': return T_BOOLEAN; | |
465 case 'V': return T_VOID; | |
466 case 'L': return T_OBJECT; | |
467 case '[': return T_ARRAY; | |
468 } | |
469 return T_ILLEGAL; | |
470 } | |
471 | |
472 extern char type2char_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
473 inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; } | |
474 extern int type2size[T_CONFLICT+1]; // Map BasicType to result stack elements | |
475 extern const char* type2name_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
476 inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; } | |
477 extern BasicType name2type(const char* name); | |
478 | |
479 // Auxilary math routines | |
480 // least common multiple | |
481 extern size_t lcm(size_t a, size_t b); | |
482 | |
483 | |
484 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
485 enum BasicTypeSize { | |
486 T_BOOLEAN_size = 1, | |
487 T_CHAR_size = 1, | |
488 T_FLOAT_size = 1, | |
489 T_DOUBLE_size = 2, | |
490 T_BYTE_size = 1, | |
491 T_SHORT_size = 1, | |
492 T_INT_size = 1, | |
493 T_LONG_size = 2, | |
494 T_OBJECT_size = 1, | |
495 T_ARRAY_size = 1, | |
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496 T_NARROWOOP_size = 1, |
0 | 497 T_VOID_size = 0 |
498 }; | |
499 | |
500 | |
501 // maps a BasicType to its instance field storage type: | |
502 // all sub-word integral types are widened to T_INT | |
503 extern BasicType type2field[T_CONFLICT+1]; | |
504 extern BasicType type2wfield[T_CONFLICT+1]; | |
505 | |
506 | |
507 // size in bytes | |
508 enum ArrayElementSize { | |
509 T_BOOLEAN_aelem_bytes = 1, | |
510 T_CHAR_aelem_bytes = 2, | |
511 T_FLOAT_aelem_bytes = 4, | |
512 T_DOUBLE_aelem_bytes = 8, | |
513 T_BYTE_aelem_bytes = 1, | |
514 T_SHORT_aelem_bytes = 2, | |
515 T_INT_aelem_bytes = 4, | |
516 T_LONG_aelem_bytes = 8, | |
517 #ifdef _LP64 | |
518 T_OBJECT_aelem_bytes = 8, | |
519 T_ARRAY_aelem_bytes = 8, | |
520 #else | |
521 T_OBJECT_aelem_bytes = 4, | |
522 T_ARRAY_aelem_bytes = 4, | |
523 #endif | |
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524 T_NARROWOOP_aelem_bytes = 4, |
0 | 525 T_VOID_aelem_bytes = 0 |
526 }; | |
527 | |
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528 extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element |
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529 #ifdef ASSERT |
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530 extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts |
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531 #else |
1763 | 532 inline int type2aelembytes(BasicType t, bool allow_address = false) { return _type2aelembytes[t]; } |
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533 #endif |
0 | 534 |
535 | |
536 // JavaValue serves as a container for arbitrary Java values. | |
537 | |
538 class JavaValue { | |
539 | |
540 public: | |
541 typedef union JavaCallValue { | |
542 jfloat f; | |
543 jdouble d; | |
544 jint i; | |
545 jlong l; | |
546 jobject h; | |
547 } JavaCallValue; | |
548 | |
549 private: | |
550 BasicType _type; | |
551 JavaCallValue _value; | |
552 | |
553 public: | |
554 JavaValue(BasicType t = T_ILLEGAL) { _type = t; } | |
555 | |
556 JavaValue(jfloat value) { | |
557 _type = T_FLOAT; | |
558 _value.f = value; | |
559 } | |
560 | |
561 JavaValue(jdouble value) { | |
562 _type = T_DOUBLE; | |
563 _value.d = value; | |
564 } | |
565 | |
566 jfloat get_jfloat() const { return _value.f; } | |
567 jdouble get_jdouble() const { return _value.d; } | |
568 jint get_jint() const { return _value.i; } | |
569 jlong get_jlong() const { return _value.l; } | |
570 jobject get_jobject() const { return _value.h; } | |
571 JavaCallValue* get_value_addr() { return &_value; } | |
572 BasicType get_type() const { return _type; } | |
573 | |
574 void set_jfloat(jfloat f) { _value.f = f;} | |
575 void set_jdouble(jdouble d) { _value.d = d;} | |
576 void set_jint(jint i) { _value.i = i;} | |
577 void set_jlong(jlong l) { _value.l = l;} | |
578 void set_jobject(jobject h) { _value.h = h;} | |
579 void set_type(BasicType t) { _type = t; } | |
580 | |
581 jboolean get_jboolean() const { return (jboolean) (_value.i);} | |
582 jbyte get_jbyte() const { return (jbyte) (_value.i);} | |
583 jchar get_jchar() const { return (jchar) (_value.i);} | |
584 jshort get_jshort() const { return (jshort) (_value.i);} | |
585 | |
586 }; | |
587 | |
588 | |
589 #define STACK_BIAS 0 | |
590 // V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff | |
591 // in order to extend the reach of the stack pointer. | |
592 #if defined(SPARC) && defined(_LP64) | |
593 #undef STACK_BIAS | |
594 #define STACK_BIAS 0x7ff | |
595 #endif | |
596 | |
597 | |
598 // TosState describes the top-of-stack state before and after the execution of | |
599 // a bytecode or method. The top-of-stack value may be cached in one or more CPU | |
600 // registers. The TosState corresponds to the 'machine represention' of this cached | |
601 // value. There's 4 states corresponding to the JAVA types int, long, float & double | |
602 // as well as a 5th state in case the top-of-stack value is actually on the top | |
603 // of stack (in memory) and thus not cached. The atos state corresponds to the itos | |
604 // state when it comes to machine representation but is used separately for (oop) | |
605 // type specific operations (e.g. verification code). | |
606 | |
607 enum TosState { // describes the tos cache contents | |
608 btos = 0, // byte, bool tos cached | |
726
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609 ctos = 1, // char tos cached |
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610 stos = 2, // short tos cached |
0 | 611 itos = 3, // int tos cached |
612 ltos = 4, // long tos cached | |
613 ftos = 5, // float tos cached | |
614 dtos = 6, // double tos cached | |
615 atos = 7, // object cached | |
616 vtos = 8, // tos not cached | |
617 number_of_states, | |
618 ilgl // illegal state: should not occur | |
619 }; | |
620 | |
621 | |
622 inline TosState as_TosState(BasicType type) { | |
623 switch (type) { | |
624 case T_BYTE : return btos; | |
726
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625 case T_BOOLEAN: return btos; // FIXME: Add ztos |
0 | 626 case T_CHAR : return ctos; |
627 case T_SHORT : return stos; | |
628 case T_INT : return itos; | |
629 case T_LONG : return ltos; | |
630 case T_FLOAT : return ftos; | |
631 case T_DOUBLE : return dtos; | |
632 case T_VOID : return vtos; | |
633 case T_ARRAY : // fall through | |
634 case T_OBJECT : return atos; | |
635 } | |
636 return ilgl; | |
637 } | |
638 | |
726
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639 inline BasicType as_BasicType(TosState state) { |
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640 switch (state) { |
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641 //case ztos: return T_BOOLEAN;//FIXME |
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642 case btos : return T_BYTE; |
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643 case ctos : return T_CHAR; |
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644 case stos : return T_SHORT; |
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645 case itos : return T_INT; |
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646 case ltos : return T_LONG; |
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647 case ftos : return T_FLOAT; |
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648 case dtos : return T_DOUBLE; |
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649 case atos : return T_OBJECT; |
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650 case vtos : return T_VOID; |
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651 } |
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652 return T_ILLEGAL; |
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653 } |
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654 |
0 | 655 |
656 // Helper function to convert BasicType info into TosState | |
657 // Note: Cannot define here as it uses global constant at the time being. | |
658 TosState as_TosState(BasicType type); | |
659 | |
660 | |
661 // ReferenceType is used to distinguish between java/lang/ref/Reference subclasses | |
662 | |
663 enum ReferenceType { | |
664 REF_NONE, // Regular class | |
665 REF_OTHER, // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below | |
666 REF_SOFT, // Subclass of java/lang/ref/SoftReference | |
667 REF_WEAK, // Subclass of java/lang/ref/WeakReference | |
668 REF_FINAL, // Subclass of java/lang/ref/FinalReference | |
669 REF_PHANTOM // Subclass of java/lang/ref/PhantomReference | |
670 }; | |
671 | |
672 | |
673 // JavaThreadState keeps track of which part of the code a thread is executing in. This | |
674 // information is needed by the safepoint code. | |
675 // | |
676 // There are 4 essential states: | |
677 // | |
678 // _thread_new : Just started, but not executed init. code yet (most likely still in OS init code) | |
679 // _thread_in_native : In native code. This is a safepoint region, since all oops will be in jobject handles | |
680 // _thread_in_vm : Executing in the vm | |
681 // _thread_in_Java : Executing either interpreted or compiled Java code (or could be in a stub) | |
682 // | |
683 // Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in | |
684 // a transition from one state to another. These extra states makes it possible for the safepoint code to | |
685 // handle certain thread_states without having to suspend the thread - making the safepoint code faster. | |
686 // | |
687 // Given a state, the xxx_trans state can always be found by adding 1. | |
688 // | |
689 enum JavaThreadState { | |
690 _thread_uninitialized = 0, // should never happen (missing initialization) | |
691 _thread_new = 2, // just starting up, i.e., in process of being initialized | |
692 _thread_new_trans = 3, // corresponding transition state (not used, included for completness) | |
693 _thread_in_native = 4, // running in native code | |
694 _thread_in_native_trans = 5, // corresponding transition state | |
695 _thread_in_vm = 6, // running in VM | |
696 _thread_in_vm_trans = 7, // corresponding transition state | |
697 _thread_in_Java = 8, // running in Java or in stub code | |
698 _thread_in_Java_trans = 9, // corresponding transition state (not used, included for completness) | |
699 _thread_blocked = 10, // blocked in vm | |
700 _thread_blocked_trans = 11, // corresponding transition state | |
701 _thread_max_state = 12 // maximum thread state+1 - used for statistics allocation | |
702 }; | |
703 | |
704 | |
705 // Handy constants for deciding which compiler mode to use. | |
706 enum MethodCompilation { | |
707 InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation | |
708 InvalidOSREntryBci = -2 | |
709 }; | |
710 | |
711 // Enumeration to distinguish tiers of compilation | |
712 enum CompLevel { | |
1783 | 713 CompLevel_any = -1, |
714 CompLevel_all = -1, | |
715 CompLevel_none = 0, // Interpreter | |
716 CompLevel_simple = 1, // C1 | |
717 CompLevel_limited_profile = 2, // C1, invocation & backedge counters | |
718 CompLevel_full_profile = 3, // C1, invocation & backedge counters + mdo | |
719 CompLevel_full_optimization = 4, // C2 | |
0 | 720 |
1783 | 721 #if defined(COMPILER2) |
722 CompLevel_highest_tier = CompLevel_full_optimization, // pure C2 and tiered | |
723 #elif defined(COMPILER1) | |
724 CompLevel_highest_tier = CompLevel_simple, // pure C1 | |
0 | 725 #else |
1783 | 726 CompLevel_highest_tier = CompLevel_none, |
727 #endif | |
728 | |
729 #if defined(TIERED) | |
730 CompLevel_initial_compile = CompLevel_full_profile // tiered | |
731 #elif defined(COMPILER1) | |
732 CompLevel_initial_compile = CompLevel_simple // pure C1 | |
733 #elif defined(COMPILER2) | |
734 CompLevel_initial_compile = CompLevel_full_optimization // pure C2 | |
735 #else | |
736 CompLevel_initial_compile = CompLevel_none | |
737 #endif | |
0 | 738 }; |
739 | |
1783 | 740 inline bool is_c1_compile(int comp_level) { |
741 return comp_level > CompLevel_none && comp_level < CompLevel_full_optimization; | |
0 | 742 } |
1783 | 743 |
744 inline bool is_c2_compile(int comp_level) { | |
0 | 745 return comp_level == CompLevel_full_optimization; |
746 } | |
1783 | 747 |
0 | 748 inline bool is_highest_tier_compile(int comp_level) { |
749 return comp_level == CompLevel_highest_tier; | |
750 } | |
751 | |
752 //---------------------------------------------------------------------------------------------------- | |
753 // 'Forward' declarations of frequently used classes | |
754 // (in order to reduce interface dependencies & reduce | |
755 // number of unnecessary compilations after changes) | |
756 | |
757 class symbolTable; | |
758 class ClassFileStream; | |
759 | |
760 class Event; | |
761 | |
762 class Thread; | |
763 class VMThread; | |
764 class JavaThread; | |
765 class Threads; | |
766 | |
767 class VM_Operation; | |
768 class VMOperationQueue; | |
769 | |
770 class CodeBlob; | |
771 class nmethod; | |
772 class OSRAdapter; | |
773 class I2CAdapter; | |
774 class C2IAdapter; | |
775 class CompiledIC; | |
776 class relocInfo; | |
777 class ScopeDesc; | |
778 class PcDesc; | |
779 | |
780 class Recompiler; | |
781 class Recompilee; | |
782 class RecompilationPolicy; | |
783 class RFrame; | |
784 class CompiledRFrame; | |
785 class InterpretedRFrame; | |
786 | |
787 class frame; | |
788 | |
789 class vframe; | |
790 class javaVFrame; | |
791 class interpretedVFrame; | |
792 class compiledVFrame; | |
793 class deoptimizedVFrame; | |
794 class externalVFrame; | |
795 class entryVFrame; | |
796 | |
797 class RegisterMap; | |
798 | |
799 class Mutex; | |
800 class Monitor; | |
801 class BasicLock; | |
802 class BasicObjectLock; | |
803 | |
804 class PeriodicTask; | |
805 | |
806 class JavaCallWrapper; | |
807 | |
808 class oopDesc; | |
809 | |
810 class NativeCall; | |
811 | |
812 class zone; | |
813 | |
814 class StubQueue; | |
815 | |
816 class outputStream; | |
817 | |
818 class ResourceArea; | |
819 | |
820 class DebugInformationRecorder; | |
821 class ScopeValue; | |
822 class CompressedStream; | |
823 class DebugInfoReadStream; | |
824 class DebugInfoWriteStream; | |
825 class LocationValue; | |
826 class ConstantValue; | |
827 class IllegalValue; | |
828 | |
829 class PrivilegedElement; | |
830 class MonitorArray; | |
831 | |
832 class MonitorInfo; | |
833 | |
834 class OffsetClosure; | |
835 class OopMapCache; | |
836 class InterpreterOopMap; | |
837 class OopMapCacheEntry; | |
838 class OSThread; | |
839 | |
840 typedef int (*OSThreadStartFunc)(void*); | |
841 | |
842 class Space; | |
843 | |
844 class JavaValue; | |
845 class methodHandle; | |
846 class JavaCallArguments; | |
847 | |
848 // Basic support for errors (general debug facilities not defined at this point fo the include phase) | |
849 | |
850 extern void basic_fatal(const char* msg); | |
851 | |
852 | |
853 //---------------------------------------------------------------------------------------------------- | |
854 // Special constants for debugging | |
855 | |
856 const jint badInt = -3; // generic "bad int" value | |
857 const long badAddressVal = -2; // generic "bad address" value | |
858 const long badOopVal = -1; // generic "bad oop" value | |
859 const intptr_t badHeapOopVal = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC | |
860 const int badHandleValue = 0xBC; // value used to zap vm handle area | |
861 const int badResourceValue = 0xAB; // value used to zap resource area | |
862 const int freeBlockPad = 0xBA; // value used to pad freed blocks. | |
863 const int uninitBlockPad = 0xF1; // value used to zap newly malloc'd blocks. | |
864 const intptr_t badJNIHandleVal = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area | |
865 const juint badHeapWordVal = 0xBAADBABE; // value used to zap heap after GC | |
866 const int badCodeHeapNewVal= 0xCC; // value used to zap Code heap at allocation | |
867 const int badCodeHeapFreeVal = 0xDD; // value used to zap Code heap at deallocation | |
868 | |
869 | |
870 // (These must be implemented as #defines because C++ compilers are | |
871 // not obligated to inline non-integral constants!) | |
872 #define badAddress ((address)::badAddressVal) | |
873 #define badOop ((oop)::badOopVal) | |
874 #define badHeapWord (::badHeapWordVal) | |
875 #define badJNIHandle ((oop)::badJNIHandleVal) | |
876 | |
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877 // Default TaskQueue size is 16K (32-bit) or 128K (64-bit) |
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878 #define TASKQUEUE_SIZE (NOT_LP64(1<<14) LP64_ONLY(1<<17)) |
0 | 879 |
880 //---------------------------------------------------------------------------------------------------- | |
881 // Utility functions for bitfield manipulations | |
882 | |
883 const intptr_t AllBits = ~0; // all bits set in a word | |
884 const intptr_t NoBits = 0; // no bits set in a word | |
885 const jlong NoLongBits = 0; // no bits set in a long | |
886 const intptr_t OneBit = 1; // only right_most bit set in a word | |
887 | |
888 // get a word with the n.th or the right-most or left-most n bits set | |
889 // (note: #define used only so that they can be used in enum constant definitions) | |
890 #define nth_bit(n) (n >= BitsPerWord ? 0 : OneBit << (n)) | |
891 #define right_n_bits(n) (nth_bit(n) - 1) | |
892 #define left_n_bits(n) (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n))) | |
893 | |
894 // bit-operations using a mask m | |
895 inline void set_bits (intptr_t& x, intptr_t m) { x |= m; } | |
896 inline void clear_bits (intptr_t& x, intptr_t m) { x &= ~m; } | |
897 inline intptr_t mask_bits (intptr_t x, intptr_t m) { return x & m; } | |
898 inline jlong mask_long_bits (jlong x, jlong m) { return x & m; } | |
899 inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; } | |
900 | |
901 // bit-operations using the n.th bit | |
902 inline void set_nth_bit(intptr_t& x, int n) { set_bits (x, nth_bit(n)); } | |
903 inline void clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); } | |
904 inline bool is_set_nth_bit(intptr_t x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; } | |
905 | |
906 // returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!) | |
907 inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) { | |
908 return mask_bits(x >> start_bit_no, right_n_bits(field_length)); | |
909 } | |
910 | |
911 | |
912 //---------------------------------------------------------------------------------------------------- | |
913 // Utility functions for integers | |
914 | |
915 // Avoid use of global min/max macros which may cause unwanted double | |
916 // evaluation of arguments. | |
917 #ifdef max | |
918 #undef max | |
919 #endif | |
920 | |
921 #ifdef min | |
922 #undef min | |
923 #endif | |
924 | |
925 #define max(a,b) Do_not_use_max_use_MAX2_instead | |
926 #define min(a,b) Do_not_use_min_use_MIN2_instead | |
927 | |
928 // It is necessary to use templates here. Having normal overloaded | |
929 // functions does not work because it is necessary to provide both 32- | |
930 // and 64-bit overloaded functions, which does not work, and having | |
931 // explicitly-typed versions of these routines (i.e., MAX2I, MAX2L) | |
932 // will be even more error-prone than macros. | |
933 template<class T> inline T MAX2(T a, T b) { return (a > b) ? a : b; } | |
934 template<class T> inline T MIN2(T a, T b) { return (a < b) ? a : b; } | |
935 template<class T> inline T MAX3(T a, T b, T c) { return MAX2(MAX2(a, b), c); } | |
936 template<class T> inline T MIN3(T a, T b, T c) { return MIN2(MIN2(a, b), c); } | |
937 template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); } | |
938 template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); } | |
939 | |
940 template<class T> inline T ABS(T x) { return (x > 0) ? x : -x; } | |
941 | |
942 // true if x is a power of 2, false otherwise | |
943 inline bool is_power_of_2(intptr_t x) { | |
944 return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits)); | |
945 } | |
946 | |
947 // long version of is_power_of_2 | |
948 inline bool is_power_of_2_long(jlong x) { | |
949 return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits)); | |
950 } | |
951 | |
952 //* largest i such that 2^i <= x | |
953 // A negative value of 'x' will return '31' | |
954 inline int log2_intptr(intptr_t x) { | |
955 int i = -1; | |
956 uintptr_t p = 1; | |
957 while (p != 0 && p <= (uintptr_t)x) { | |
958 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
959 i++; p *= 2; | |
960 } | |
961 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 962 // (if p = 0 then overflow occurred and i = 31) |
0 | 963 return i; |
964 } | |
965 | |
966 //* largest i such that 2^i <= x | |
967 // A negative value of 'x' will return '63' | |
968 inline int log2_long(jlong x) { | |
969 int i = -1; | |
970 julong p = 1; | |
971 while (p != 0 && p <= (julong)x) { | |
972 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
973 i++; p *= 2; | |
974 } | |
975 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 976 // (if p = 0 then overflow occurred and i = 63) |
0 | 977 return i; |
978 } | |
979 | |
980 //* the argument must be exactly a power of 2 | |
981 inline int exact_log2(intptr_t x) { | |
982 #ifdef ASSERT | |
983 if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); | |
984 #endif | |
985 return log2_intptr(x); | |
986 } | |
987 | |
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988 //* the argument must be exactly a power of 2 |
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989 inline int exact_log2_long(jlong x) { |
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990 #ifdef ASSERT |
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991 if (!is_power_of_2_long(x)) basic_fatal("x must be a power of 2"); |
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992 #endif |
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993 return log2_long(x); |
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994 } |
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995 |
0 | 996 |
997 // returns integer round-up to the nearest multiple of s (s must be a power of two) | |
998 inline intptr_t round_to(intptr_t x, uintx s) { | |
999 #ifdef ASSERT | |
1000 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
1001 #endif | |
1002 const uintx m = s - 1; | |
1003 return mask_bits(x + m, ~m); | |
1004 } | |
1005 | |
1006 // returns integer round-down to the nearest multiple of s (s must be a power of two) | |
1007 inline intptr_t round_down(intptr_t x, uintx s) { | |
1008 #ifdef ASSERT | |
1009 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
1010 #endif | |
1011 const uintx m = s - 1; | |
1012 return mask_bits(x, ~m); | |
1013 } | |
1014 | |
1015 | |
1016 inline bool is_odd (intx x) { return x & 1; } | |
1017 inline bool is_even(intx x) { return !is_odd(x); } | |
1018 | |
1019 // "to" should be greater than "from." | |
1020 inline intx byte_size(void* from, void* to) { | |
1021 return (address)to - (address)from; | |
1022 } | |
1023 | |
1024 //---------------------------------------------------------------------------------------------------- | |
1025 // Avoid non-portable casts with these routines (DEPRECATED) | |
1026 | |
1027 // NOTE: USE Bytes class INSTEAD WHERE POSSIBLE | |
1028 // Bytes is optimized machine-specifically and may be much faster then the portable routines below. | |
1029 | |
1030 // Given sequence of four bytes, build into a 32-bit word | |
1031 // following the conventions used in class files. | |
1032 // On the 386, this could be realized with a simple address cast. | |
1033 // | |
1034 | |
1035 // This routine takes eight bytes: | |
1036 inline u8 build_u8_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
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1037 return (( u8(c1) << 56 ) & ( u8(0xff) << 56 )) |
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1038 | (( u8(c2) << 48 ) & ( u8(0xff) << 48 )) |
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1039 | (( u8(c3) << 40 ) & ( u8(0xff) << 40 )) |
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1040 | (( u8(c4) << 32 ) & ( u8(0xff) << 32 )) |
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1041 | (( u8(c5) << 24 ) & ( u8(0xff) << 24 )) |
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1042 | (( u8(c6) << 16 ) & ( u8(0xff) << 16 )) |
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1043 | (( u8(c7) << 8 ) & ( u8(0xff) << 8 )) |
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1044 | (( u8(c8) << 0 ) & ( u8(0xff) << 0 )); |
0 | 1045 } |
1046 | |
1047 // This routine takes four bytes: | |
1048 inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
1789
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1049 return (( u4(c1) << 24 ) & 0xff000000) |
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1050 | (( u4(c2) << 16 ) & 0x00ff0000) |
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1051 | (( u4(c3) << 8 ) & 0x0000ff00) |
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1052 | (( u4(c4) << 0 ) & 0x000000ff); |
0 | 1053 } |
1054 | |
1055 // And this one works if the four bytes are contiguous in memory: | |
1056 inline u4 build_u4_from( u1* p ) { | |
1057 return build_u4_from( p[0], p[1], p[2], p[3] ); | |
1058 } | |
1059 | |
1060 // Ditto for two-byte ints: | |
1061 inline u2 build_u2_from( u1 c1, u1 c2 ) { | |
1789
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1062 return u2((( u2(c1) << 8 ) & 0xff00) |
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1063 | (( u2(c2) << 0 ) & 0x00ff)); |
0 | 1064 } |
1065 | |
1066 // And this one works if the two bytes are contiguous in memory: | |
1067 inline u2 build_u2_from( u1* p ) { | |
1068 return build_u2_from( p[0], p[1] ); | |
1069 } | |
1070 | |
1071 // Ditto for floats: | |
1072 inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
1073 u4 u = build_u4_from( c1, c2, c3, c4 ); | |
1074 return *(jfloat*)&u; | |
1075 } | |
1076 | |
1077 inline jfloat build_float_from( u1* p ) { | |
1078 u4 u = build_u4_from( p ); | |
1079 return *(jfloat*)&u; | |
1080 } | |
1081 | |
1082 | |
1083 // now (64-bit) longs | |
1084 | |
1085 inline jlong build_long_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
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1086 return (( jlong(c1) << 56 ) & ( jlong(0xff) << 56 )) |
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1087 | (( jlong(c2) << 48 ) & ( jlong(0xff) << 48 )) |
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1088 | (( jlong(c3) << 40 ) & ( jlong(0xff) << 40 )) |
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1089 | (( jlong(c4) << 32 ) & ( jlong(0xff) << 32 )) |
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1090 | (( jlong(c5) << 24 ) & ( jlong(0xff) << 24 )) |
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1091 | (( jlong(c6) << 16 ) & ( jlong(0xff) << 16 )) |
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1092 | (( jlong(c7) << 8 ) & ( jlong(0xff) << 8 )) |
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1093 | (( jlong(c8) << 0 ) & ( jlong(0xff) << 0 )); |
0 | 1094 } |
1095 | |
1096 inline jlong build_long_from( u1* p ) { | |
1097 return build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] ); | |
1098 } | |
1099 | |
1100 | |
1101 // Doubles, too! | |
1102 inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
1103 jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 ); | |
1104 return *(jdouble*)&u; | |
1105 } | |
1106 | |
1107 inline jdouble build_double_from( u1* p ) { | |
1108 jlong u = build_long_from( p ); | |
1109 return *(jdouble*)&u; | |
1110 } | |
1111 | |
1112 | |
1113 // Portable routines to go the other way: | |
1114 | |
1115 inline void explode_short_to( u2 x, u1& c1, u1& c2 ) { | |
1116 c1 = u1(x >> 8); | |
1117 c2 = u1(x); | |
1118 } | |
1119 | |
1120 inline void explode_short_to( u2 x, u1* p ) { | |
1121 explode_short_to( x, p[0], p[1]); | |
1122 } | |
1123 | |
1124 inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) { | |
1125 c1 = u1(x >> 24); | |
1126 c2 = u1(x >> 16); | |
1127 c3 = u1(x >> 8); | |
1128 c4 = u1(x); | |
1129 } | |
1130 | |
1131 inline void explode_int_to( u4 x, u1* p ) { | |
1132 explode_int_to( x, p[0], p[1], p[2], p[3]); | |
1133 } | |
1134 | |
1135 | |
1136 // Pack and extract shorts to/from ints: | |
1137 | |
1138 inline int extract_low_short_from_int(jint x) { | |
1139 return x & 0xffff; | |
1140 } | |
1141 | |
1142 inline int extract_high_short_from_int(jint x) { | |
1143 return (x >> 16) & 0xffff; | |
1144 } | |
1145 | |
1146 inline int build_int_from_shorts( jushort low, jushort high ) { | |
1147 return ((int)((unsigned int)high << 16) | (unsigned int)low); | |
1148 } | |
1149 | |
1150 // Printf-style formatters for fixed- and variable-width types as pointers and | |
1151 // integers. | |
1152 // | |
1153 // Each compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp) | |
1154 // must define the macro FORMAT64_MODIFIER, which is the modifier for '%x' or | |
1155 // '%d' formats to indicate a 64-bit quantity; commonly "l" (in LP64) or "ll" | |
1156 // (in ILP32). | |
1157 | |
1158 // Format 32-bit quantities. | |
1159 #define INT32_FORMAT "%d" | |
1160 #define UINT32_FORMAT "%u" | |
1161 #define INT32_FORMAT_W(width) "%" #width "d" | |
1162 #define UINT32_FORMAT_W(width) "%" #width "u" | |
1163 | |
1164 #define PTR32_FORMAT "0x%08x" | |
1165 | |
1166 // Format 64-bit quantities. | |
1167 #define INT64_FORMAT "%" FORMAT64_MODIFIER "d" | |
1168 #define UINT64_FORMAT "%" FORMAT64_MODIFIER "u" | |
1169 #define PTR64_FORMAT "0x%016" FORMAT64_MODIFIER "x" | |
1170 | |
1171 #define INT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "d" | |
1172 #define UINT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "u" | |
1173 | |
1174 // Format macros that allow the field width to be specified. The width must be | |
1175 // a string literal (e.g., "8") or a macro that evaluates to one. | |
1176 #ifdef _LP64 | |
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1177 #define UINTX_FORMAT_W(width) UINT64_FORMAT_W(width) |
0 | 1178 #define SSIZE_FORMAT_W(width) INT64_FORMAT_W(width) |
1179 #define SIZE_FORMAT_W(width) UINT64_FORMAT_W(width) | |
1180 #else | |
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1181 #define UINTX_FORMAT_W(width) UINT32_FORMAT_W(width) |
0 | 1182 #define SSIZE_FORMAT_W(width) INT32_FORMAT_W(width) |
1183 #define SIZE_FORMAT_W(width) UINT32_FORMAT_W(width) | |
1184 #endif // _LP64 | |
1185 | |
1186 // Format pointers and size_t (or size_t-like integer types) which change size | |
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1187 // between 32- and 64-bit. The pointer format theoretically should be "%p", |
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1188 // however, it has different output on different platforms. On Windows, the data |
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1189 // will be padded with zeros automatically. On Solaris, we can use "%016p" & |
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1190 // "%08p" on 64 bit & 32 bit platforms to make the data padded with extra zeros. |
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1191 // On Linux, "%016p" or "%08p" is not be allowed, at least on the latest GCC |
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1192 // 4.3.2. So we have to use "%016x" or "%08x" to simulate the printing format. |
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1193 // GCC 4.3.2, however requires the data to be converted to "intptr_t" when |
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1194 // using "%x". |
0 | 1195 #ifdef _LP64 |
1196 #define PTR_FORMAT PTR64_FORMAT | |
1197 #define UINTX_FORMAT UINT64_FORMAT | |
1198 #define INTX_FORMAT INT64_FORMAT | |
1199 #define SIZE_FORMAT UINT64_FORMAT | |
1200 #define SSIZE_FORMAT INT64_FORMAT | |
1201 #else // !_LP64 | |
1202 #define PTR_FORMAT PTR32_FORMAT | |
1203 #define UINTX_FORMAT UINT32_FORMAT | |
1204 #define INTX_FORMAT INT32_FORMAT | |
1205 #define SIZE_FORMAT UINT32_FORMAT | |
1206 #define SSIZE_FORMAT INT32_FORMAT | |
1207 #endif // _LP64 | |
1208 | |
1209 #define INTPTR_FORMAT PTR_FORMAT | |
1210 | |
1211 // Enable zap-a-lot if in debug version. | |
1212 | |
1213 # ifdef ASSERT | |
1214 # ifdef COMPILER2 | |
1215 # define ENABLE_ZAP_DEAD_LOCALS | |
1216 #endif /* COMPILER2 */ | |
1217 # endif /* ASSERT */ | |
1218 | |
1219 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0])) |