Mercurial > hg > truffle
annotate src/share/vm/utilities/globalDefinitions.hpp @ 3229:4a6bda6cfe28
Fix for usages that are phi in rematerialization
author | Gilles Duboscq <gilles.duboscq@oracle.com> |
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date | Thu, 21 Jul 2011 11:32:22 +0200 |
parents | 0654ee04b214 |
children | 04b9a2566eec |
rev | line source |
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0 | 1 /* |
2152 | 2 * Copyright (c) 1997, 2011, 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 | |
1972 | 25 #ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP |
26 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP | |
27 | |
28 #ifdef TARGET_COMPILER_gcc | |
29 # include "utilities/globalDefinitions_gcc.hpp" | |
30 #endif | |
31 #ifdef TARGET_COMPILER_visCPP | |
32 # include "utilities/globalDefinitions_visCPP.hpp" | |
33 #endif | |
34 #ifdef TARGET_COMPILER_sparcWorks | |
35 # include "utilities/globalDefinitions_sparcWorks.hpp" | |
36 #endif | |
37 | |
38 #include "utilities/macros.hpp" | |
39 | |
0 | 40 // This file holds all globally used constants & types, class (forward) |
41 // declarations and a few frequently used utility functions. | |
42 | |
43 //---------------------------------------------------------------------------------------------------- | |
44 // Constants | |
45 | |
46 const int LogBytesPerShort = 1; | |
47 const int LogBytesPerInt = 2; | |
48 #ifdef _LP64 | |
49 const int LogBytesPerWord = 3; | |
50 #else | |
51 const int LogBytesPerWord = 2; | |
52 #endif | |
53 const int LogBytesPerLong = 3; | |
54 | |
55 const int BytesPerShort = 1 << LogBytesPerShort; | |
56 const int BytesPerInt = 1 << LogBytesPerInt; | |
57 const int BytesPerWord = 1 << LogBytesPerWord; | |
58 const int BytesPerLong = 1 << LogBytesPerLong; | |
59 | |
60 const int LogBitsPerByte = 3; | |
61 const int LogBitsPerShort = LogBitsPerByte + LogBytesPerShort; | |
62 const int LogBitsPerInt = LogBitsPerByte + LogBytesPerInt; | |
63 const int LogBitsPerWord = LogBitsPerByte + LogBytesPerWord; | |
64 const int LogBitsPerLong = LogBitsPerByte + LogBytesPerLong; | |
65 | |
66 const int BitsPerByte = 1 << LogBitsPerByte; | |
67 const int BitsPerShort = 1 << LogBitsPerShort; | |
68 const int BitsPerInt = 1 << LogBitsPerInt; | |
69 const int BitsPerWord = 1 << LogBitsPerWord; | |
70 const int BitsPerLong = 1 << LogBitsPerLong; | |
71 | |
72 const int WordAlignmentMask = (1 << LogBytesPerWord) - 1; | |
73 const int LongAlignmentMask = (1 << LogBytesPerLong) - 1; | |
74 | |
75 const int WordsPerLong = 2; // Number of stack entries for longs | |
76 | |
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77 const int oopSize = sizeof(char*); // Full-width oop |
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78 extern int heapOopSize; // Oop within a java object |
0 | 79 const int wordSize = sizeof(char*); |
80 const int longSize = sizeof(jlong); | |
81 const int jintSize = sizeof(jint); | |
82 const int size_tSize = sizeof(size_t); | |
83 | |
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84 const int BytesPerOop = BytesPerWord; // Full-width oop |
0 | 85 |
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86 extern int LogBytesPerHeapOop; // Oop within a java object |
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87 extern int LogBitsPerHeapOop; |
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88 extern int BytesPerHeapOop; |
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89 extern int BitsPerHeapOop; |
0 | 90 |
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91 // Oop encoding heap max |
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92 extern uint64_t OopEncodingHeapMax; |
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93 |
0 | 94 const int BitsPerJavaInteger = 32; |
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95 const int BitsPerJavaLong = 64; |
0 | 96 const int BitsPerSize_t = size_tSize * BitsPerByte; |
97 | |
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98 // Size of a char[] needed to represent a jint as a string in decimal. |
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99 const int jintAsStringSize = 12; |
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100 |
0 | 101 // In fact this should be |
102 // log2_intptr(sizeof(class JavaThread)) - log2_intptr(64); | |
103 // see os::set_memory_serialize_page() | |
104 #ifdef _LP64 | |
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105 const int SerializePageShiftCount = 5; |
0 | 106 #else |
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107 const int SerializePageShiftCount = 4; |
0 | 108 #endif |
109 | |
110 // An opaque struct of heap-word width, so that HeapWord* can be a generic | |
111 // pointer into the heap. We require that object sizes be measured in | |
112 // units of heap words, so that that | |
113 // HeapWord* hw; | |
114 // hw += oop(hw)->foo(); | |
115 // works, where foo is a method (like size or scavenge) that returns the | |
116 // object size. | |
117 class HeapWord { | |
118 friend class VMStructs; | |
263
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119 private: |
0 | 120 char* i; |
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121 #ifndef PRODUCT |
263
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122 public: |
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123 char* value() { return i; } |
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124 #endif |
0 | 125 }; |
126 | |
127 // HeapWordSize must be 2^LogHeapWordSize. | |
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128 const int HeapWordSize = sizeof(HeapWord); |
0 | 129 #ifdef _LP64 |
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130 const int LogHeapWordSize = 3; |
0 | 131 #else |
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132 const int LogHeapWordSize = 2; |
0 | 133 #endif |
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134 const int HeapWordsPerLong = BytesPerLong / HeapWordSize; |
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135 const int LogHeapWordsPerLong = LogBytesPerLong - LogHeapWordSize; |
0 | 136 |
137 // The larger HeapWordSize for 64bit requires larger heaps | |
138 // for the same application running in 64bit. See bug 4967770. | |
139 // The minimum alignment to a heap word size is done. Other | |
140 // parts of the memory system may required additional alignment | |
141 // and are responsible for those alignments. | |
142 #ifdef _LP64 | |
143 #define ScaleForWordSize(x) align_size_down_((x) * 13 / 10, HeapWordSize) | |
144 #else | |
145 #define ScaleForWordSize(x) (x) | |
146 #endif | |
147 | |
148 // The minimum number of native machine words necessary to contain "byte_size" | |
149 // bytes. | |
150 inline size_t heap_word_size(size_t byte_size) { | |
151 return (byte_size + (HeapWordSize-1)) >> LogHeapWordSize; | |
152 } | |
153 | |
154 | |
155 const size_t K = 1024; | |
156 const size_t M = K*K; | |
157 const size_t G = M*K; | |
158 const size_t HWperKB = K / sizeof(HeapWord); | |
159 | |
1261 | 160 const size_t LOG_K = 10; |
161 const size_t LOG_M = 2 * LOG_K; | |
162 const size_t LOG_G = 2 * LOG_M; | |
163 | |
0 | 164 const jint min_jint = (jint)1 << (sizeof(jint)*BitsPerByte-1); // 0x80000000 == smallest jint |
165 const jint max_jint = (juint)min_jint - 1; // 0x7FFFFFFF == largest jint | |
166 | |
167 // Constants for converting from a base unit to milli-base units. For | |
168 // example from seconds to milliseconds and microseconds | |
169 | |
170 const int MILLIUNITS = 1000; // milli units per base unit | |
171 const int MICROUNITS = 1000000; // micro units per base unit | |
172 const int NANOUNITS = 1000000000; // nano units per base unit | |
173 | |
174 inline const char* proper_unit_for_byte_size(size_t s) { | |
175 if (s >= 10*M) { | |
176 return "M"; | |
177 } else if (s >= 10*K) { | |
178 return "K"; | |
179 } else { | |
180 return "B"; | |
181 } | |
182 } | |
183 | |
184 inline size_t byte_size_in_proper_unit(size_t s) { | |
185 if (s >= 10*M) { | |
186 return s/M; | |
187 } else if (s >= 10*K) { | |
188 return s/K; | |
189 } else { | |
190 return s; | |
191 } | |
192 } | |
193 | |
194 | |
195 //---------------------------------------------------------------------------------------------------- | |
196 // VM type definitions | |
197 | |
198 // intx and uintx are the 'extended' int and 'extended' unsigned int types; | |
199 // they are 32bit wide on a 32-bit platform, and 64bit wide on a 64bit platform. | |
200 | |
201 typedef intptr_t intx; | |
202 typedef uintptr_t uintx; | |
203 | |
204 const intx min_intx = (intx)1 << (sizeof(intx)*BitsPerByte-1); | |
205 const intx max_intx = (uintx)min_intx - 1; | |
206 const uintx max_uintx = (uintx)-1; | |
207 | |
208 // Table of values: | |
209 // sizeof intx 4 8 | |
210 // min_intx 0x80000000 0x8000000000000000 | |
211 // max_intx 0x7FFFFFFF 0x7FFFFFFFFFFFFFFF | |
212 // max_uintx 0xFFFFFFFF 0xFFFFFFFFFFFFFFFF | |
213 | |
214 typedef unsigned int uint; NEEDS_CLEANUP | |
215 | |
216 | |
217 //---------------------------------------------------------------------------------------------------- | |
218 // Java type definitions | |
219 | |
220 // All kinds of 'plain' byte addresses | |
221 typedef signed char s_char; | |
222 typedef unsigned char u_char; | |
223 typedef u_char* address; | |
224 typedef uintptr_t address_word; // unsigned integer which will hold a pointer | |
225 // except for some implementations of a C++ | |
226 // linkage pointer to function. Should never | |
227 // need one of those to be placed in this | |
228 // type anyway. | |
229 | |
230 // Utility functions to "portably" (?) bit twiddle pointers | |
231 // Where portable means keep ANSI C++ compilers quiet | |
232 | |
233 inline address set_address_bits(address x, int m) { return address(intptr_t(x) | m); } | |
234 inline address clear_address_bits(address x, int m) { return address(intptr_t(x) & ~m); } | |
235 | |
236 // Utility functions to "portably" make cast to/from function pointers. | |
237 | |
238 inline address_word mask_address_bits(address x, int m) { return address_word(x) & m; } | |
239 inline address_word castable_address(address x) { return address_word(x) ; } | |
240 inline address_word castable_address(void* x) { return address_word(x) ; } | |
241 | |
242 // Pointer subtraction. | |
243 // The idea here is to avoid ptrdiff_t, which is signed and so doesn't have | |
244 // the range we might need to find differences from one end of the heap | |
245 // to the other. | |
246 // A typical use might be: | |
247 // if (pointer_delta(end(), top()) >= size) { | |
248 // // enough room for an object of size | |
249 // ... | |
250 // and then additions like | |
251 // ... top() + size ... | |
252 // are safe because we know that top() is at least size below end(). | |
253 inline size_t pointer_delta(const void* left, | |
254 const void* right, | |
255 size_t element_size) { | |
256 return (((uintptr_t) left) - ((uintptr_t) right)) / element_size; | |
257 } | |
258 // A version specialized for HeapWord*'s. | |
259 inline size_t pointer_delta(const HeapWord* left, const HeapWord* right) { | |
260 return pointer_delta(left, right, sizeof(HeapWord)); | |
261 } | |
262 | |
263 // | |
264 // ANSI C++ does not allow casting from one pointer type to a function pointer | |
265 // directly without at best a warning. This macro accomplishes it silently | |
266 // In every case that is present at this point the value be cast is a pointer | |
267 // to a C linkage function. In somecase the type used for the cast reflects | |
268 // that linkage and a picky compiler would not complain. In other cases because | |
269 // there is no convenient place to place a typedef with extern C linkage (i.e | |
270 // a platform dependent header file) it doesn't. At this point no compiler seems | |
271 // picky enough to catch these instances (which are few). It is possible that | |
272 // using templates could fix these for all cases. This use of templates is likely | |
273 // so far from the middle of the road that it is likely to be problematic in | |
274 // many C++ compilers. | |
275 // | |
276 #define CAST_TO_FN_PTR(func_type, value) ((func_type)(castable_address(value))) | |
277 #define CAST_FROM_FN_PTR(new_type, func_ptr) ((new_type)((address_word)(func_ptr))) | |
278 | |
279 // Unsigned byte types for os and stream.hpp | |
280 | |
281 // Unsigned one, two, four and eigth byte quantities used for describing | |
282 // the .class file format. See JVM book chapter 4. | |
283 | |
284 typedef jubyte u1; | |
285 typedef jushort u2; | |
286 typedef juint u4; | |
287 typedef julong u8; | |
288 | |
289 const jubyte max_jubyte = (jubyte)-1; // 0xFF largest jubyte | |
290 const jushort max_jushort = (jushort)-1; // 0xFFFF largest jushort | |
291 const juint max_juint = (juint)-1; // 0xFFFFFFFF largest juint | |
292 const julong max_julong = (julong)-1; // 0xFF....FF largest julong | |
293 | |
294 //---------------------------------------------------------------------------------------------------- | |
295 // JVM spec restrictions | |
296 | |
297 const int max_method_code_size = 64*K - 1; // JVM spec, 2nd ed. section 4.8.1 (p.134) | |
298 | |
299 | |
300 //---------------------------------------------------------------------------------------------------- | |
301 // HotSwap - for JVMTI aka Class File Replacement and PopFrame | |
302 // | |
303 // Determines whether on-the-fly class replacement and frame popping are enabled. | |
304 | |
305 #define HOTSWAP | |
306 | |
307 //---------------------------------------------------------------------------------------------------- | |
308 // Object alignment, in units of HeapWords. | |
309 // | |
310 // Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and | |
311 // reference fields can be naturally aligned. | |
312 | |
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313 extern int MinObjAlignment; |
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314 extern int MinObjAlignmentInBytes; |
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315 extern int MinObjAlignmentInBytesMask; |
0 | 316 |
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317 extern int LogMinObjAlignment; |
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318 extern int LogMinObjAlignmentInBytes; |
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319 |
0 | 320 // Machine dependent stuff |
321 | |
1972 | 322 #ifdef TARGET_ARCH_x86 |
323 # include "globalDefinitions_x86.hpp" | |
324 #endif | |
325 #ifdef TARGET_ARCH_sparc | |
326 # include "globalDefinitions_sparc.hpp" | |
327 #endif | |
328 #ifdef TARGET_ARCH_zero | |
329 # include "globalDefinitions_zero.hpp" | |
330 #endif | |
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331 #ifdef TARGET_ARCH_arm |
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332 # include "globalDefinitions_arm.hpp" |
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333 #endif |
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334 #ifdef TARGET_ARCH_ppc |
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335 # include "globalDefinitions_ppc.hpp" |
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336 #endif |
1972 | 337 |
0 | 338 |
339 // The byte alignment to be used by Arena::Amalloc. See bugid 4169348. | |
340 // Note: this value must be a power of 2 | |
341 | |
342 #define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord) | |
343 | |
344 // Signed variants of alignment helpers. There are two versions of each, a macro | |
345 // for use in places like enum definitions that require compile-time constant | |
346 // expressions and a function for all other places so as to get type checking. | |
347 | |
348 #define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1)) | |
349 | |
350 inline intptr_t align_size_up(intptr_t size, intptr_t alignment) { | |
351 return align_size_up_(size, alignment); | |
352 } | |
353 | |
354 #define align_size_down_(size, alignment) ((size) & ~((alignment) - 1)) | |
355 | |
356 inline intptr_t align_size_down(intptr_t size, intptr_t alignment) { | |
357 return align_size_down_(size, alignment); | |
358 } | |
359 | |
360 // Align objects by rounding up their size, in HeapWord units. | |
361 | |
362 #define align_object_size_(size) align_size_up_(size, MinObjAlignment) | |
363 | |
364 inline intptr_t align_object_size(intptr_t size) { | |
365 return align_size_up(size, MinObjAlignment); | |
366 } | |
367 | |
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368 inline bool is_object_aligned(intptr_t addr) { |
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369 return addr == align_object_size(addr); |
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370 } |
0 | 371 |
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372 // Pad out certain offsets to jlong alignment, in HeapWord units. |
0 | 373 |
374 inline intptr_t align_object_offset(intptr_t offset) { | |
375 return align_size_up(offset, HeapWordsPerLong); | |
376 } | |
377 | |
1665 | 378 // The expected size in bytes of a cache line, used to pad data structures. |
379 #define DEFAULT_CACHE_LINE_SIZE 64 | |
380 | |
381 // Bytes needed to pad type to avoid cache-line sharing; alignment should be the | |
382 // expected cache line size (a power of two). The first addend avoids sharing | |
383 // when the start address is not a multiple of alignment; the second maintains | |
384 // alignment of starting addresses that happen to be a multiple. | |
385 #define PADDING_SIZE(type, alignment) \ | |
386 ((alignment) + align_size_up_(sizeof(type), alignment)) | |
387 | |
388 // Templates to create a subclass padded to avoid cache line sharing. These are | |
389 // effective only when applied to derived-most (leaf) classes. | |
390 | |
391 // When no args are passed to the base ctor. | |
392 template <class T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> | |
393 class Padded: public T { | |
394 private: | |
395 char _pad_buf_[PADDING_SIZE(T, alignment)]; | |
396 }; | |
397 | |
398 // When either 0 or 1 args may be passed to the base ctor. | |
399 template <class T, typename Arg1T, size_t alignment = DEFAULT_CACHE_LINE_SIZE> | |
400 class Padded01: public T { | |
401 public: | |
402 Padded01(): T() { } | |
403 Padded01(Arg1T arg1): T(arg1) { } | |
404 private: | |
405 char _pad_buf_[PADDING_SIZE(T, alignment)]; | |
406 }; | |
0 | 407 |
408 //---------------------------------------------------------------------------------------------------- | |
409 // Utility macros for compilers | |
410 // used to silence compiler warnings | |
411 | |
412 #define Unused_Variable(var) var | |
413 | |
414 | |
415 //---------------------------------------------------------------------------------------------------- | |
416 // Miscellaneous | |
417 | |
418 // 6302670 Eliminate Hotspot __fabsf dependency | |
419 // All fabs() callers should call this function instead, which will implicitly | |
420 // convert the operand to double, avoiding a dependency on __fabsf which | |
421 // doesn't exist in early versions of Solaris 8. | |
422 inline double fabsd(double value) { | |
423 return fabs(value); | |
424 } | |
425 | |
426 inline jint low (jlong value) { return jint(value); } | |
427 inline jint high(jlong value) { return jint(value >> 32); } | |
428 | |
429 // the fancy casts are a hopefully portable way | |
430 // to do unsigned 32 to 64 bit type conversion | |
431 inline void set_low (jlong* value, jint low ) { *value &= (jlong)0xffffffff << 32; | |
432 *value |= (jlong)(julong)(juint)low; } | |
433 | |
434 inline void set_high(jlong* value, jint high) { *value &= (jlong)(julong)(juint)0xffffffff; | |
435 *value |= (jlong)high << 32; } | |
436 | |
437 inline jlong jlong_from(jint h, jint l) { | |
438 jlong result = 0; // initialization to avoid warning | |
439 set_high(&result, h); | |
440 set_low(&result, l); | |
441 return result; | |
442 } | |
443 | |
444 union jlong_accessor { | |
445 jint words[2]; | |
446 jlong long_value; | |
447 }; | |
448 | |
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449 void basic_types_init(); // cannot define here; uses assert |
0 | 450 |
451 | |
452 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
453 enum BasicType { | |
454 T_BOOLEAN = 4, | |
455 T_CHAR = 5, | |
456 T_FLOAT = 6, | |
457 T_DOUBLE = 7, | |
458 T_BYTE = 8, | |
459 T_SHORT = 9, | |
460 T_INT = 10, | |
461 T_LONG = 11, | |
462 T_OBJECT = 12, | |
463 T_ARRAY = 13, | |
464 T_VOID = 14, | |
465 T_ADDRESS = 15, | |
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466 T_NARROWOOP= 16, |
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467 T_CONFLICT = 17, // for stack value type with conflicting contents |
0 | 468 T_ILLEGAL = 99 |
469 }; | |
470 | |
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471 inline bool is_java_primitive(BasicType t) { |
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472 return T_BOOLEAN <= t && t <= T_LONG; |
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473 } |
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474 |
710 | 475 inline bool is_subword_type(BasicType t) { |
476 // these guys are processed exactly like T_INT in calling sequences: | |
477 return (t == T_BOOLEAN || t == T_CHAR || t == T_BYTE || t == T_SHORT); | |
478 } | |
479 | |
480 inline bool is_signed_subword_type(BasicType t) { | |
481 return (t == T_BYTE || t == T_SHORT); | |
482 } | |
483 | |
0 | 484 // Convert a char from a classfile signature to a BasicType |
485 inline BasicType char2type(char c) { | |
486 switch( c ) { | |
487 case 'B': return T_BYTE; | |
488 case 'C': return T_CHAR; | |
489 case 'D': return T_DOUBLE; | |
490 case 'F': return T_FLOAT; | |
491 case 'I': return T_INT; | |
492 case 'J': return T_LONG; | |
493 case 'S': return T_SHORT; | |
494 case 'Z': return T_BOOLEAN; | |
495 case 'V': return T_VOID; | |
496 case 'L': return T_OBJECT; | |
497 case '[': return T_ARRAY; | |
498 } | |
499 return T_ILLEGAL; | |
500 } | |
501 | |
502 extern char type2char_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
503 inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; } | |
504 extern int type2size[T_CONFLICT+1]; // Map BasicType to result stack elements | |
505 extern const char* type2name_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
506 inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; } | |
507 extern BasicType name2type(const char* name); | |
508 | |
509 // Auxilary math routines | |
510 // least common multiple | |
511 extern size_t lcm(size_t a, size_t b); | |
512 | |
513 | |
514 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
515 enum BasicTypeSize { | |
516 T_BOOLEAN_size = 1, | |
517 T_CHAR_size = 1, | |
518 T_FLOAT_size = 1, | |
519 T_DOUBLE_size = 2, | |
520 T_BYTE_size = 1, | |
521 T_SHORT_size = 1, | |
522 T_INT_size = 1, | |
523 T_LONG_size = 2, | |
524 T_OBJECT_size = 1, | |
525 T_ARRAY_size = 1, | |
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526 T_NARROWOOP_size = 1, |
0 | 527 T_VOID_size = 0 |
528 }; | |
529 | |
530 | |
531 // maps a BasicType to its instance field storage type: | |
532 // all sub-word integral types are widened to T_INT | |
533 extern BasicType type2field[T_CONFLICT+1]; | |
534 extern BasicType type2wfield[T_CONFLICT+1]; | |
535 | |
536 | |
537 // size in bytes | |
538 enum ArrayElementSize { | |
539 T_BOOLEAN_aelem_bytes = 1, | |
540 T_CHAR_aelem_bytes = 2, | |
541 T_FLOAT_aelem_bytes = 4, | |
542 T_DOUBLE_aelem_bytes = 8, | |
543 T_BYTE_aelem_bytes = 1, | |
544 T_SHORT_aelem_bytes = 2, | |
545 T_INT_aelem_bytes = 4, | |
546 T_LONG_aelem_bytes = 8, | |
547 #ifdef _LP64 | |
548 T_OBJECT_aelem_bytes = 8, | |
549 T_ARRAY_aelem_bytes = 8, | |
550 #else | |
551 T_OBJECT_aelem_bytes = 4, | |
552 T_ARRAY_aelem_bytes = 4, | |
553 #endif | |
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554 T_NARROWOOP_aelem_bytes = 4, |
0 | 555 T_VOID_aelem_bytes = 0 |
556 }; | |
557 | |
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558 extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element |
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559 #ifdef ASSERT |
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560 extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts |
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561 #else |
1763 | 562 inline int type2aelembytes(BasicType t, bool allow_address = false) { return _type2aelembytes[t]; } |
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563 #endif |
0 | 564 |
565 | |
566 // JavaValue serves as a container for arbitrary Java values. | |
567 | |
568 class JavaValue { | |
569 | |
570 public: | |
571 typedef union JavaCallValue { | |
572 jfloat f; | |
573 jdouble d; | |
574 jint i; | |
575 jlong l; | |
576 jobject h; | |
577 } JavaCallValue; | |
578 | |
579 private: | |
580 BasicType _type; | |
581 JavaCallValue _value; | |
582 | |
583 public: | |
584 JavaValue(BasicType t = T_ILLEGAL) { _type = t; } | |
585 | |
586 JavaValue(jfloat value) { | |
587 _type = T_FLOAT; | |
588 _value.f = value; | |
589 } | |
590 | |
591 JavaValue(jdouble value) { | |
592 _type = T_DOUBLE; | |
593 _value.d = value; | |
594 } | |
595 | |
596 jfloat get_jfloat() const { return _value.f; } | |
597 jdouble get_jdouble() const { return _value.d; } | |
598 jint get_jint() const { return _value.i; } | |
599 jlong get_jlong() const { return _value.l; } | |
600 jobject get_jobject() const { return _value.h; } | |
601 JavaCallValue* get_value_addr() { return &_value; } | |
602 BasicType get_type() const { return _type; } | |
603 | |
604 void set_jfloat(jfloat f) { _value.f = f;} | |
605 void set_jdouble(jdouble d) { _value.d = d;} | |
606 void set_jint(jint i) { _value.i = i;} | |
607 void set_jlong(jlong l) { _value.l = l;} | |
608 void set_jobject(jobject h) { _value.h = h;} | |
609 void set_type(BasicType t) { _type = t; } | |
610 | |
611 jboolean get_jboolean() const { return (jboolean) (_value.i);} | |
612 jbyte get_jbyte() const { return (jbyte) (_value.i);} | |
613 jchar get_jchar() const { return (jchar) (_value.i);} | |
614 jshort get_jshort() const { return (jshort) (_value.i);} | |
615 | |
616 }; | |
617 | |
618 | |
619 #define STACK_BIAS 0 | |
620 // V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff | |
621 // in order to extend the reach of the stack pointer. | |
622 #if defined(SPARC) && defined(_LP64) | |
623 #undef STACK_BIAS | |
624 #define STACK_BIAS 0x7ff | |
625 #endif | |
626 | |
627 | |
628 // TosState describes the top-of-stack state before and after the execution of | |
629 // a bytecode or method. The top-of-stack value may be cached in one or more CPU | |
630 // registers. The TosState corresponds to the 'machine represention' of this cached | |
631 // value. There's 4 states corresponding to the JAVA types int, long, float & double | |
632 // as well as a 5th state in case the top-of-stack value is actually on the top | |
633 // of stack (in memory) and thus not cached. The atos state corresponds to the itos | |
634 // state when it comes to machine representation but is used separately for (oop) | |
635 // type specific operations (e.g. verification code). | |
636 | |
637 enum TosState { // describes the tos cache contents | |
638 btos = 0, // byte, bool tos cached | |
726
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639 ctos = 1, // char tos cached |
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640 stos = 2, // short tos cached |
0 | 641 itos = 3, // int tos cached |
642 ltos = 4, // long tos cached | |
643 ftos = 5, // float tos cached | |
644 dtos = 6, // double tos cached | |
645 atos = 7, // object cached | |
646 vtos = 8, // tos not cached | |
647 number_of_states, | |
648 ilgl // illegal state: should not occur | |
649 }; | |
650 | |
651 | |
652 inline TosState as_TosState(BasicType type) { | |
653 switch (type) { | |
654 case T_BYTE : return btos; | |
726
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655 case T_BOOLEAN: return btos; // FIXME: Add ztos |
0 | 656 case T_CHAR : return ctos; |
657 case T_SHORT : return stos; | |
658 case T_INT : return itos; | |
659 case T_LONG : return ltos; | |
660 case T_FLOAT : return ftos; | |
661 case T_DOUBLE : return dtos; | |
662 case T_VOID : return vtos; | |
663 case T_ARRAY : // fall through | |
664 case T_OBJECT : return atos; | |
665 } | |
666 return ilgl; | |
667 } | |
668 | |
726
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669 inline BasicType as_BasicType(TosState state) { |
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670 switch (state) { |
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671 //case ztos: return T_BOOLEAN;//FIXME |
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672 case btos : return T_BYTE; |
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673 case ctos : return T_CHAR; |
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674 case stos : return T_SHORT; |
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675 case itos : return T_INT; |
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676 case ltos : return T_LONG; |
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677 case ftos : return T_FLOAT; |
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678 case dtos : return T_DOUBLE; |
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679 case atos : return T_OBJECT; |
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680 case vtos : return T_VOID; |
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681 } |
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682 return T_ILLEGAL; |
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683 } |
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684 |
0 | 685 |
686 // Helper function to convert BasicType info into TosState | |
687 // Note: Cannot define here as it uses global constant at the time being. | |
688 TosState as_TosState(BasicType type); | |
689 | |
690 | |
691 // ReferenceType is used to distinguish between java/lang/ref/Reference subclasses | |
692 | |
693 enum ReferenceType { | |
694 REF_NONE, // Regular class | |
695 REF_OTHER, // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below | |
696 REF_SOFT, // Subclass of java/lang/ref/SoftReference | |
697 REF_WEAK, // Subclass of java/lang/ref/WeakReference | |
698 REF_FINAL, // Subclass of java/lang/ref/FinalReference | |
699 REF_PHANTOM // Subclass of java/lang/ref/PhantomReference | |
700 }; | |
701 | |
702 | |
703 // JavaThreadState keeps track of which part of the code a thread is executing in. This | |
704 // information is needed by the safepoint code. | |
705 // | |
706 // There are 4 essential states: | |
707 // | |
708 // _thread_new : Just started, but not executed init. code yet (most likely still in OS init code) | |
709 // _thread_in_native : In native code. This is a safepoint region, since all oops will be in jobject handles | |
710 // _thread_in_vm : Executing in the vm | |
711 // _thread_in_Java : Executing either interpreted or compiled Java code (or could be in a stub) | |
712 // | |
713 // Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in | |
714 // a transition from one state to another. These extra states makes it possible for the safepoint code to | |
715 // handle certain thread_states without having to suspend the thread - making the safepoint code faster. | |
716 // | |
717 // Given a state, the xxx_trans state can always be found by adding 1. | |
718 // | |
719 enum JavaThreadState { | |
720 _thread_uninitialized = 0, // should never happen (missing initialization) | |
721 _thread_new = 2, // just starting up, i.e., in process of being initialized | |
722 _thread_new_trans = 3, // corresponding transition state (not used, included for completness) | |
723 _thread_in_native = 4, // running in native code | |
724 _thread_in_native_trans = 5, // corresponding transition state | |
725 _thread_in_vm = 6, // running in VM | |
726 _thread_in_vm_trans = 7, // corresponding transition state | |
727 _thread_in_Java = 8, // running in Java or in stub code | |
728 _thread_in_Java_trans = 9, // corresponding transition state (not used, included for completness) | |
729 _thread_blocked = 10, // blocked in vm | |
730 _thread_blocked_trans = 11, // corresponding transition state | |
731 _thread_max_state = 12 // maximum thread state+1 - used for statistics allocation | |
732 }; | |
733 | |
734 | |
735 // Handy constants for deciding which compiler mode to use. | |
736 enum MethodCompilation { | |
737 InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation | |
738 InvalidOSREntryBci = -2 | |
739 }; | |
740 | |
741 // Enumeration to distinguish tiers of compilation | |
742 enum CompLevel { | |
1783 | 743 CompLevel_any = -1, |
744 CompLevel_all = -1, | |
745 CompLevel_none = 0, // Interpreter | |
746 CompLevel_simple = 1, // C1 | |
747 CompLevel_limited_profile = 2, // C1, invocation & backedge counters | |
748 CompLevel_full_profile = 3, // C1, invocation & backedge counters + mdo | |
2447 | 749 CompLevel_full_optimization = 4, // C2 or Shark |
0 | 750 |
2447 | 751 #if defined(COMPILER2) || defined(SHARK) |
1783 | 752 CompLevel_highest_tier = CompLevel_full_optimization, // pure C2 and tiered |
753 #elif defined(COMPILER1) | |
754 CompLevel_highest_tier = CompLevel_simple, // pure C1 | |
0 | 755 #else |
1783 | 756 CompLevel_highest_tier = CompLevel_none, |
757 #endif | |
758 | |
759 #if defined(TIERED) | |
760 CompLevel_initial_compile = CompLevel_full_profile // tiered | |
761 #elif defined(COMPILER1) | |
762 CompLevel_initial_compile = CompLevel_simple // pure C1 | |
2447 | 763 #elif defined(COMPILER2) || defined(SHARK) |
1783 | 764 CompLevel_initial_compile = CompLevel_full_optimization // pure C2 |
765 #else | |
766 CompLevel_initial_compile = CompLevel_none | |
767 #endif | |
0 | 768 }; |
769 | |
1783 | 770 inline bool is_c1_compile(int comp_level) { |
771 return comp_level > CompLevel_none && comp_level < CompLevel_full_optimization; | |
0 | 772 } |
1783 | 773 |
774 inline bool is_c2_compile(int comp_level) { | |
0 | 775 return comp_level == CompLevel_full_optimization; |
776 } | |
1783 | 777 |
0 | 778 inline bool is_highest_tier_compile(int comp_level) { |
779 return comp_level == CompLevel_highest_tier; | |
780 } | |
781 | |
782 //---------------------------------------------------------------------------------------------------- | |
783 // 'Forward' declarations of frequently used classes | |
784 // (in order to reduce interface dependencies & reduce | |
785 // number of unnecessary compilations after changes) | |
786 | |
787 class symbolTable; | |
788 class ClassFileStream; | |
789 | |
790 class Event; | |
791 | |
792 class Thread; | |
793 class VMThread; | |
794 class JavaThread; | |
795 class Threads; | |
796 | |
797 class VM_Operation; | |
798 class VMOperationQueue; | |
799 | |
800 class CodeBlob; | |
801 class nmethod; | |
802 class OSRAdapter; | |
803 class I2CAdapter; | |
804 class C2IAdapter; | |
805 class CompiledIC; | |
806 class relocInfo; | |
807 class ScopeDesc; | |
808 class PcDesc; | |
809 | |
810 class Recompiler; | |
811 class Recompilee; | |
812 class RecompilationPolicy; | |
813 class RFrame; | |
814 class CompiledRFrame; | |
815 class InterpretedRFrame; | |
816 | |
817 class frame; | |
818 | |
819 class vframe; | |
820 class javaVFrame; | |
821 class interpretedVFrame; | |
822 class compiledVFrame; | |
823 class deoptimizedVFrame; | |
824 class externalVFrame; | |
825 class entryVFrame; | |
826 | |
827 class RegisterMap; | |
828 | |
829 class Mutex; | |
830 class Monitor; | |
831 class BasicLock; | |
832 class BasicObjectLock; | |
833 | |
834 class PeriodicTask; | |
835 | |
836 class JavaCallWrapper; | |
837 | |
838 class oopDesc; | |
839 | |
840 class NativeCall; | |
841 | |
842 class zone; | |
843 | |
844 class StubQueue; | |
845 | |
846 class outputStream; | |
847 | |
848 class ResourceArea; | |
849 | |
850 class DebugInformationRecorder; | |
851 class ScopeValue; | |
852 class CompressedStream; | |
853 class DebugInfoReadStream; | |
854 class DebugInfoWriteStream; | |
855 class LocationValue; | |
856 class ConstantValue; | |
857 class IllegalValue; | |
858 | |
859 class PrivilegedElement; | |
860 class MonitorArray; | |
861 | |
862 class MonitorInfo; | |
863 | |
864 class OffsetClosure; | |
865 class OopMapCache; | |
866 class InterpreterOopMap; | |
867 class OopMapCacheEntry; | |
868 class OSThread; | |
869 | |
870 typedef int (*OSThreadStartFunc)(void*); | |
871 | |
872 class Space; | |
873 | |
874 class JavaValue; | |
875 class methodHandle; | |
876 class JavaCallArguments; | |
877 | |
878 // Basic support for errors (general debug facilities not defined at this point fo the include phase) | |
879 | |
880 extern void basic_fatal(const char* msg); | |
881 | |
882 | |
883 //---------------------------------------------------------------------------------------------------- | |
884 // Special constants for debugging | |
885 | |
886 const jint badInt = -3; // generic "bad int" value | |
887 const long badAddressVal = -2; // generic "bad address" value | |
888 const long badOopVal = -1; // generic "bad oop" value | |
889 const intptr_t badHeapOopVal = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC | |
890 const int badHandleValue = 0xBC; // value used to zap vm handle area | |
891 const int badResourceValue = 0xAB; // value used to zap resource area | |
892 const int freeBlockPad = 0xBA; // value used to pad freed blocks. | |
893 const int uninitBlockPad = 0xF1; // value used to zap newly malloc'd blocks. | |
894 const intptr_t badJNIHandleVal = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area | |
895 const juint badHeapWordVal = 0xBAADBABE; // value used to zap heap after GC | |
896 const int badCodeHeapNewVal= 0xCC; // value used to zap Code heap at allocation | |
897 const int badCodeHeapFreeVal = 0xDD; // value used to zap Code heap at deallocation | |
898 | |
899 | |
900 // (These must be implemented as #defines because C++ compilers are | |
901 // not obligated to inline non-integral constants!) | |
902 #define badAddress ((address)::badAddressVal) | |
903 #define badOop ((oop)::badOopVal) | |
904 #define badHeapWord (::badHeapWordVal) | |
905 #define badJNIHandle ((oop)::badJNIHandleVal) | |
906 | |
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907 // Default TaskQueue size is 16K (32-bit) or 128K (64-bit) |
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908 #define TASKQUEUE_SIZE (NOT_LP64(1<<14) LP64_ONLY(1<<17)) |
0 | 909 |
910 //---------------------------------------------------------------------------------------------------- | |
911 // Utility functions for bitfield manipulations | |
912 | |
913 const intptr_t AllBits = ~0; // all bits set in a word | |
914 const intptr_t NoBits = 0; // no bits set in a word | |
915 const jlong NoLongBits = 0; // no bits set in a long | |
916 const intptr_t OneBit = 1; // only right_most bit set in a word | |
917 | |
918 // get a word with the n.th or the right-most or left-most n bits set | |
919 // (note: #define used only so that they can be used in enum constant definitions) | |
920 #define nth_bit(n) (n >= BitsPerWord ? 0 : OneBit << (n)) | |
921 #define right_n_bits(n) (nth_bit(n) - 1) | |
922 #define left_n_bits(n) (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n))) | |
923 | |
924 // bit-operations using a mask m | |
925 inline void set_bits (intptr_t& x, intptr_t m) { x |= m; } | |
926 inline void clear_bits (intptr_t& x, intptr_t m) { x &= ~m; } | |
927 inline intptr_t mask_bits (intptr_t x, intptr_t m) { return x & m; } | |
928 inline jlong mask_long_bits (jlong x, jlong m) { return x & m; } | |
929 inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; } | |
930 | |
931 // bit-operations using the n.th bit | |
932 inline void set_nth_bit(intptr_t& x, int n) { set_bits (x, nth_bit(n)); } | |
933 inline void clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); } | |
934 inline bool is_set_nth_bit(intptr_t x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; } | |
935 | |
936 // returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!) | |
937 inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) { | |
938 return mask_bits(x >> start_bit_no, right_n_bits(field_length)); | |
939 } | |
940 | |
941 | |
942 //---------------------------------------------------------------------------------------------------- | |
943 // Utility functions for integers | |
944 | |
945 // Avoid use of global min/max macros which may cause unwanted double | |
946 // evaluation of arguments. | |
947 #ifdef max | |
948 #undef max | |
949 #endif | |
950 | |
951 #ifdef min | |
952 #undef min | |
953 #endif | |
954 | |
955 #define max(a,b) Do_not_use_max_use_MAX2_instead | |
956 #define min(a,b) Do_not_use_min_use_MIN2_instead | |
957 | |
958 // It is necessary to use templates here. Having normal overloaded | |
959 // functions does not work because it is necessary to provide both 32- | |
960 // and 64-bit overloaded functions, which does not work, and having | |
961 // explicitly-typed versions of these routines (i.e., MAX2I, MAX2L) | |
962 // will be even more error-prone than macros. | |
963 template<class T> inline T MAX2(T a, T b) { return (a > b) ? a : b; } | |
964 template<class T> inline T MIN2(T a, T b) { return (a < b) ? a : b; } | |
965 template<class T> inline T MAX3(T a, T b, T c) { return MAX2(MAX2(a, b), c); } | |
966 template<class T> inline T MIN3(T a, T b, T c) { return MIN2(MIN2(a, b), c); } | |
967 template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); } | |
968 template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); } | |
969 | |
970 template<class T> inline T ABS(T x) { return (x > 0) ? x : -x; } | |
971 | |
972 // true if x is a power of 2, false otherwise | |
973 inline bool is_power_of_2(intptr_t x) { | |
974 return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits)); | |
975 } | |
976 | |
977 // long version of is_power_of_2 | |
978 inline bool is_power_of_2_long(jlong x) { | |
979 return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits)); | |
980 } | |
981 | |
982 //* largest i such that 2^i <= x | |
983 // A negative value of 'x' will return '31' | |
984 inline int log2_intptr(intptr_t x) { | |
985 int i = -1; | |
986 uintptr_t p = 1; | |
987 while (p != 0 && p <= (uintptr_t)x) { | |
988 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
989 i++; p *= 2; | |
990 } | |
991 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 992 // (if p = 0 then overflow occurred and i = 31) |
0 | 993 return i; |
994 } | |
995 | |
996 //* largest i such that 2^i <= x | |
997 // A negative value of 'x' will return '63' | |
998 inline int log2_long(jlong x) { | |
999 int i = -1; | |
1000 julong p = 1; | |
1001 while (p != 0 && p <= (julong)x) { | |
1002 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
1003 i++; p *= 2; | |
1004 } | |
1005 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 1006 // (if p = 0 then overflow occurred and i = 63) |
0 | 1007 return i; |
1008 } | |
1009 | |
1010 //* the argument must be exactly a power of 2 | |
1011 inline int exact_log2(intptr_t x) { | |
1012 #ifdef ASSERT | |
1013 if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); | |
1014 #endif | |
1015 return log2_intptr(x); | |
1016 } | |
1017 | |
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1018 //* the argument must be exactly a power of 2 |
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1019 inline int exact_log2_long(jlong x) { |
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1020 #ifdef ASSERT |
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1021 if (!is_power_of_2_long(x)) basic_fatal("x must be a power of 2"); |
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1022 #endif |
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1023 return log2_long(x); |
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1024 } |
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1025 |
0 | 1026 |
1027 // returns integer round-up to the nearest multiple of s (s must be a power of two) | |
1028 inline intptr_t round_to(intptr_t x, uintx s) { | |
1029 #ifdef ASSERT | |
1030 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
1031 #endif | |
1032 const uintx m = s - 1; | |
1033 return mask_bits(x + m, ~m); | |
1034 } | |
1035 | |
1036 // returns integer round-down to the nearest multiple of s (s must be a power of two) | |
1037 inline intptr_t round_down(intptr_t x, uintx s) { | |
1038 #ifdef ASSERT | |
1039 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
1040 #endif | |
1041 const uintx m = s - 1; | |
1042 return mask_bits(x, ~m); | |
1043 } | |
1044 | |
1045 | |
1046 inline bool is_odd (intx x) { return x & 1; } | |
1047 inline bool is_even(intx x) { return !is_odd(x); } | |
1048 | |
1049 // "to" should be greater than "from." | |
1050 inline intx byte_size(void* from, void* to) { | |
1051 return (address)to - (address)from; | |
1052 } | |
1053 | |
1054 //---------------------------------------------------------------------------------------------------- | |
1055 // Avoid non-portable casts with these routines (DEPRECATED) | |
1056 | |
1057 // NOTE: USE Bytes class INSTEAD WHERE POSSIBLE | |
1058 // Bytes is optimized machine-specifically and may be much faster then the portable routines below. | |
1059 | |
1060 // Given sequence of four bytes, build into a 32-bit word | |
1061 // following the conventions used in class files. | |
1062 // On the 386, this could be realized with a simple address cast. | |
1063 // | |
1064 | |
1065 // This routine takes eight bytes: | |
1066 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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1067 return (( u8(c1) << 56 ) & ( u8(0xff) << 56 )) |
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1068 | (( u8(c2) << 48 ) & ( u8(0xff) << 48 )) |
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1069 | (( u8(c3) << 40 ) & ( u8(0xff) << 40 )) |
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1070 | (( u8(c4) << 32 ) & ( u8(0xff) << 32 )) |
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1071 | (( u8(c5) << 24 ) & ( u8(0xff) << 24 )) |
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1072 | (( u8(c6) << 16 ) & ( u8(0xff) << 16 )) |
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1073 | (( u8(c7) << 8 ) & ( u8(0xff) << 8 )) |
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1074 | (( u8(c8) << 0 ) & ( u8(0xff) << 0 )); |
0 | 1075 } |
1076 | |
1077 // This routine takes four bytes: | |
1078 inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
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1079 return (( u4(c1) << 24 ) & 0xff000000) |
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1080 | (( u4(c2) << 16 ) & 0x00ff0000) |
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1081 | (( u4(c3) << 8 ) & 0x0000ff00) |
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1082 | (( u4(c4) << 0 ) & 0x000000ff); |
0 | 1083 } |
1084 | |
1085 // And this one works if the four bytes are contiguous in memory: | |
1086 inline u4 build_u4_from( u1* p ) { | |
1087 return build_u4_from( p[0], p[1], p[2], p[3] ); | |
1088 } | |
1089 | |
1090 // Ditto for two-byte ints: | |
1091 inline u2 build_u2_from( u1 c1, u1 c2 ) { | |
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1092 return u2((( u2(c1) << 8 ) & 0xff00) |
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1093 | (( u2(c2) << 0 ) & 0x00ff)); |
0 | 1094 } |
1095 | |
1096 // And this one works if the two bytes are contiguous in memory: | |
1097 inline u2 build_u2_from( u1* p ) { | |
1098 return build_u2_from( p[0], p[1] ); | |
1099 } | |
1100 | |
1101 // Ditto for floats: | |
1102 inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
1103 u4 u = build_u4_from( c1, c2, c3, c4 ); | |
1104 return *(jfloat*)&u; | |
1105 } | |
1106 | |
1107 inline jfloat build_float_from( u1* p ) { | |
1108 u4 u = build_u4_from( p ); | |
1109 return *(jfloat*)&u; | |
1110 } | |
1111 | |
1112 | |
1113 // now (64-bit) longs | |
1114 | |
1115 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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1116 return (( jlong(c1) << 56 ) & ( jlong(0xff) << 56 )) |
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1117 | (( jlong(c2) << 48 ) & ( jlong(0xff) << 48 )) |
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1118 | (( jlong(c3) << 40 ) & ( jlong(0xff) << 40 )) |
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1119 | (( jlong(c4) << 32 ) & ( jlong(0xff) << 32 )) |
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1120 | (( jlong(c5) << 24 ) & ( jlong(0xff) << 24 )) |
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1121 | (( jlong(c6) << 16 ) & ( jlong(0xff) << 16 )) |
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1122 | (( jlong(c7) << 8 ) & ( jlong(0xff) << 8 )) |
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1123 | (( jlong(c8) << 0 ) & ( jlong(0xff) << 0 )); |
0 | 1124 } |
1125 | |
1126 inline jlong build_long_from( u1* p ) { | |
1127 return build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] ); | |
1128 } | |
1129 | |
1130 | |
1131 // Doubles, too! | |
1132 inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
1133 jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 ); | |
1134 return *(jdouble*)&u; | |
1135 } | |
1136 | |
1137 inline jdouble build_double_from( u1* p ) { | |
1138 jlong u = build_long_from( p ); | |
1139 return *(jdouble*)&u; | |
1140 } | |
1141 | |
1142 | |
1143 // Portable routines to go the other way: | |
1144 | |
1145 inline void explode_short_to( u2 x, u1& c1, u1& c2 ) { | |
1146 c1 = u1(x >> 8); | |
1147 c2 = u1(x); | |
1148 } | |
1149 | |
1150 inline void explode_short_to( u2 x, u1* p ) { | |
1151 explode_short_to( x, p[0], p[1]); | |
1152 } | |
1153 | |
1154 inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) { | |
1155 c1 = u1(x >> 24); | |
1156 c2 = u1(x >> 16); | |
1157 c3 = u1(x >> 8); | |
1158 c4 = u1(x); | |
1159 } | |
1160 | |
1161 inline void explode_int_to( u4 x, u1* p ) { | |
1162 explode_int_to( x, p[0], p[1], p[2], p[3]); | |
1163 } | |
1164 | |
1165 | |
1166 // Pack and extract shorts to/from ints: | |
1167 | |
1168 inline int extract_low_short_from_int(jint x) { | |
1169 return x & 0xffff; | |
1170 } | |
1171 | |
1172 inline int extract_high_short_from_int(jint x) { | |
1173 return (x >> 16) & 0xffff; | |
1174 } | |
1175 | |
1176 inline int build_int_from_shorts( jushort low, jushort high ) { | |
1177 return ((int)((unsigned int)high << 16) | (unsigned int)low); | |
1178 } | |
1179 | |
1180 // Printf-style formatters for fixed- and variable-width types as pointers and | |
1181 // integers. | |
1182 // | |
1183 // Each compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp) | |
1184 // must define the macro FORMAT64_MODIFIER, which is the modifier for '%x' or | |
1185 // '%d' formats to indicate a 64-bit quantity; commonly "l" (in LP64) or "ll" | |
1186 // (in ILP32). | |
1187 | |
2361 | 1188 #define BOOL_TO_STR(_b_) ((_b_) ? "true" : "false") |
2152 | 1189 |
0 | 1190 // Format 32-bit quantities. |
1191 #define INT32_FORMAT "%d" | |
1192 #define UINT32_FORMAT "%u" | |
1193 #define INT32_FORMAT_W(width) "%" #width "d" | |
1194 #define UINT32_FORMAT_W(width) "%" #width "u" | |
1195 | |
1196 #define PTR32_FORMAT "0x%08x" | |
1197 | |
1198 // Format 64-bit quantities. | |
1199 #define INT64_FORMAT "%" FORMAT64_MODIFIER "d" | |
1200 #define UINT64_FORMAT "%" FORMAT64_MODIFIER "u" | |
1201 #define PTR64_FORMAT "0x%016" FORMAT64_MODIFIER "x" | |
1202 | |
1203 #define INT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "d" | |
1204 #define UINT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "u" | |
1205 | |
1206 // Format macros that allow the field width to be specified. The width must be | |
1207 // a string literal (e.g., "8") or a macro that evaluates to one. | |
1208 #ifdef _LP64 | |
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1209 #define UINTX_FORMAT_W(width) UINT64_FORMAT_W(width) |
0 | 1210 #define SSIZE_FORMAT_W(width) INT64_FORMAT_W(width) |
1211 #define SIZE_FORMAT_W(width) UINT64_FORMAT_W(width) | |
1212 #else | |
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1213 #define UINTX_FORMAT_W(width) UINT32_FORMAT_W(width) |
0 | 1214 #define SSIZE_FORMAT_W(width) INT32_FORMAT_W(width) |
1215 #define SIZE_FORMAT_W(width) UINT32_FORMAT_W(width) | |
1216 #endif // _LP64 | |
1217 | |
1218 // Format pointers and size_t (or size_t-like integer types) which change size | |
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1219 // between 32- and 64-bit. The pointer format theoretically should be "%p", |
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1220 // however, it has different output on different platforms. On Windows, the data |
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1221 // will be padded with zeros automatically. On Solaris, we can use "%016p" & |
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1222 // "%08p" on 64 bit & 32 bit platforms to make the data padded with extra zeros. |
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1223 // On Linux, "%016p" or "%08p" is not be allowed, at least on the latest GCC |
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1224 // 4.3.2. So we have to use "%016x" or "%08x" to simulate the printing format. |
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1225 // GCC 4.3.2, however requires the data to be converted to "intptr_t" when |
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1226 // using "%x". |
0 | 1227 #ifdef _LP64 |
1228 #define PTR_FORMAT PTR64_FORMAT | |
1229 #define UINTX_FORMAT UINT64_FORMAT | |
1230 #define INTX_FORMAT INT64_FORMAT | |
1231 #define SIZE_FORMAT UINT64_FORMAT | |
1232 #define SSIZE_FORMAT INT64_FORMAT | |
1233 #else // !_LP64 | |
1234 #define PTR_FORMAT PTR32_FORMAT | |
1235 #define UINTX_FORMAT UINT32_FORMAT | |
1236 #define INTX_FORMAT INT32_FORMAT | |
1237 #define SIZE_FORMAT UINT32_FORMAT | |
1238 #define SSIZE_FORMAT INT32_FORMAT | |
1239 #endif // _LP64 | |
1240 | |
1241 #define INTPTR_FORMAT PTR_FORMAT | |
1242 | |
1243 // Enable zap-a-lot if in debug version. | |
1244 | |
1245 # ifdef ASSERT | |
1246 # ifdef COMPILER2 | |
1247 # define ENABLE_ZAP_DEAD_LOCALS | |
1248 #endif /* COMPILER2 */ | |
1249 # endif /* ASSERT */ | |
1250 | |
1251 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0])) | |
1972 | 1252 |
1253 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP |