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annotate src/share/vm/utilities/globalDefinitions.hpp @ 1552:c18cbe5936b8
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Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
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date | Thu, 27 May 2010 19:08:38 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2009, 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 |
76 const int BitsPerJavaInteger = 32; | |
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77 const int BitsPerJavaLong = 64; |
0 | 78 const int BitsPerSize_t = size_tSize * BitsPerByte; |
79 | |
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80 // Size of a char[] needed to represent a jint as a string in decimal. |
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81 const int jintAsStringSize = 12; |
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82 |
0 | 83 // In fact this should be |
84 // log2_intptr(sizeof(class JavaThread)) - log2_intptr(64); | |
85 // see os::set_memory_serialize_page() | |
86 #ifdef _LP64 | |
87 const int SerializePageShiftCount = 4; | |
88 #else | |
89 const int SerializePageShiftCount = 3; | |
90 #endif | |
91 | |
92 // An opaque struct of heap-word width, so that HeapWord* can be a generic | |
93 // pointer into the heap. We require that object sizes be measured in | |
94 // units of heap words, so that that | |
95 // HeapWord* hw; | |
96 // hw += oop(hw)->foo(); | |
97 // works, where foo is a method (like size or scavenge) that returns the | |
98 // object size. | |
99 class HeapWord { | |
100 friend class VMStructs; | |
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101 private: |
0 | 102 char* i; |
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103 #ifndef PRODUCT |
263
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104 public: |
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105 char* value() { return i; } |
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106 #endif |
0 | 107 }; |
108 | |
109 // HeapWordSize must be 2^LogHeapWordSize. | |
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110 const int HeapWordSize = sizeof(HeapWord); |
0 | 111 #ifdef _LP64 |
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112 const int LogHeapWordSize = 3; |
0 | 113 #else |
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114 const int LogHeapWordSize = 2; |
0 | 115 #endif |
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116 const int HeapWordsPerLong = BytesPerLong / HeapWordSize; |
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117 const int LogHeapWordsPerLong = LogBytesPerLong - LogHeapWordSize; |
0 | 118 |
119 // The larger HeapWordSize for 64bit requires larger heaps | |
120 // for the same application running in 64bit. See bug 4967770. | |
121 // The minimum alignment to a heap word size is done. Other | |
122 // parts of the memory system may required additional alignment | |
123 // and are responsible for those alignments. | |
124 #ifdef _LP64 | |
125 #define ScaleForWordSize(x) align_size_down_((x) * 13 / 10, HeapWordSize) | |
126 #else | |
127 #define ScaleForWordSize(x) (x) | |
128 #endif | |
129 | |
130 // The minimum number of native machine words necessary to contain "byte_size" | |
131 // bytes. | |
132 inline size_t heap_word_size(size_t byte_size) { | |
133 return (byte_size + (HeapWordSize-1)) >> LogHeapWordSize; | |
134 } | |
135 | |
136 | |
137 const size_t K = 1024; | |
138 const size_t M = K*K; | |
139 const size_t G = M*K; | |
140 const size_t HWperKB = K / sizeof(HeapWord); | |
141 | |
1261 | 142 const size_t LOG_K = 10; |
143 const size_t LOG_M = 2 * LOG_K; | |
144 const size_t LOG_G = 2 * LOG_M; | |
145 | |
0 | 146 const jint min_jint = (jint)1 << (sizeof(jint)*BitsPerByte-1); // 0x80000000 == smallest jint |
147 const jint max_jint = (juint)min_jint - 1; // 0x7FFFFFFF == largest jint | |
148 | |
149 // Constants for converting from a base unit to milli-base units. For | |
150 // example from seconds to milliseconds and microseconds | |
151 | |
152 const int MILLIUNITS = 1000; // milli units per base unit | |
153 const int MICROUNITS = 1000000; // micro units per base unit | |
154 const int NANOUNITS = 1000000000; // nano units per base unit | |
155 | |
156 inline const char* proper_unit_for_byte_size(size_t s) { | |
157 if (s >= 10*M) { | |
158 return "M"; | |
159 } else if (s >= 10*K) { | |
160 return "K"; | |
161 } else { | |
162 return "B"; | |
163 } | |
164 } | |
165 | |
166 inline size_t byte_size_in_proper_unit(size_t s) { | |
167 if (s >= 10*M) { | |
168 return s/M; | |
169 } else if (s >= 10*K) { | |
170 return s/K; | |
171 } else { | |
172 return s; | |
173 } | |
174 } | |
175 | |
176 | |
177 //---------------------------------------------------------------------------------------------------- | |
178 // VM type definitions | |
179 | |
180 // intx and uintx are the 'extended' int and 'extended' unsigned int types; | |
181 // they are 32bit wide on a 32-bit platform, and 64bit wide on a 64bit platform. | |
182 | |
183 typedef intptr_t intx; | |
184 typedef uintptr_t uintx; | |
185 | |
186 const intx min_intx = (intx)1 << (sizeof(intx)*BitsPerByte-1); | |
187 const intx max_intx = (uintx)min_intx - 1; | |
188 const uintx max_uintx = (uintx)-1; | |
189 | |
190 // Table of values: | |
191 // sizeof intx 4 8 | |
192 // min_intx 0x80000000 0x8000000000000000 | |
193 // max_intx 0x7FFFFFFF 0x7FFFFFFFFFFFFFFF | |
194 // max_uintx 0xFFFFFFFF 0xFFFFFFFFFFFFFFFF | |
195 | |
196 typedef unsigned int uint; NEEDS_CLEANUP | |
197 | |
198 | |
199 //---------------------------------------------------------------------------------------------------- | |
200 // Java type definitions | |
201 | |
202 // All kinds of 'plain' byte addresses | |
203 typedef signed char s_char; | |
204 typedef unsigned char u_char; | |
205 typedef u_char* address; | |
206 typedef uintptr_t address_word; // unsigned integer which will hold a pointer | |
207 // except for some implementations of a C++ | |
208 // linkage pointer to function. Should never | |
209 // need one of those to be placed in this | |
210 // type anyway. | |
211 | |
212 // Utility functions to "portably" (?) bit twiddle pointers | |
213 // Where portable means keep ANSI C++ compilers quiet | |
214 | |
215 inline address set_address_bits(address x, int m) { return address(intptr_t(x) | m); } | |
216 inline address clear_address_bits(address x, int m) { return address(intptr_t(x) & ~m); } | |
217 | |
218 // Utility functions to "portably" make cast to/from function pointers. | |
219 | |
220 inline address_word mask_address_bits(address x, int m) { return address_word(x) & m; } | |
221 inline address_word castable_address(address x) { return address_word(x) ; } | |
222 inline address_word castable_address(void* x) { return address_word(x) ; } | |
223 | |
224 // Pointer subtraction. | |
225 // The idea here is to avoid ptrdiff_t, which is signed and so doesn't have | |
226 // the range we might need to find differences from one end of the heap | |
227 // to the other. | |
228 // A typical use might be: | |
229 // if (pointer_delta(end(), top()) >= size) { | |
230 // // enough room for an object of size | |
231 // ... | |
232 // and then additions like | |
233 // ... top() + size ... | |
234 // are safe because we know that top() is at least size below end(). | |
235 inline size_t pointer_delta(const void* left, | |
236 const void* right, | |
237 size_t element_size) { | |
238 return (((uintptr_t) left) - ((uintptr_t) right)) / element_size; | |
239 } | |
240 // A version specialized for HeapWord*'s. | |
241 inline size_t pointer_delta(const HeapWord* left, const HeapWord* right) { | |
242 return pointer_delta(left, right, sizeof(HeapWord)); | |
243 } | |
244 | |
245 // | |
246 // ANSI C++ does not allow casting from one pointer type to a function pointer | |
247 // directly without at best a warning. This macro accomplishes it silently | |
248 // In every case that is present at this point the value be cast is a pointer | |
249 // to a C linkage function. In somecase the type used for the cast reflects | |
250 // that linkage and a picky compiler would not complain. In other cases because | |
251 // there is no convenient place to place a typedef with extern C linkage (i.e | |
252 // a platform dependent header file) it doesn't. At this point no compiler seems | |
253 // picky enough to catch these instances (which are few). It is possible that | |
254 // using templates could fix these for all cases. This use of templates is likely | |
255 // so far from the middle of the road that it is likely to be problematic in | |
256 // many C++ compilers. | |
257 // | |
258 #define CAST_TO_FN_PTR(func_type, value) ((func_type)(castable_address(value))) | |
259 #define CAST_FROM_FN_PTR(new_type, func_ptr) ((new_type)((address_word)(func_ptr))) | |
260 | |
261 // Unsigned byte types for os and stream.hpp | |
262 | |
263 // Unsigned one, two, four and eigth byte quantities used for describing | |
264 // the .class file format. See JVM book chapter 4. | |
265 | |
266 typedef jubyte u1; | |
267 typedef jushort u2; | |
268 typedef juint u4; | |
269 typedef julong u8; | |
270 | |
271 const jubyte max_jubyte = (jubyte)-1; // 0xFF largest jubyte | |
272 const jushort max_jushort = (jushort)-1; // 0xFFFF largest jushort | |
273 const juint max_juint = (juint)-1; // 0xFFFFFFFF largest juint | |
274 const julong max_julong = (julong)-1; // 0xFF....FF largest julong | |
275 | |
276 //---------------------------------------------------------------------------------------------------- | |
277 // JVM spec restrictions | |
278 | |
279 const int max_method_code_size = 64*K - 1; // JVM spec, 2nd ed. section 4.8.1 (p.134) | |
280 | |
281 | |
282 //---------------------------------------------------------------------------------------------------- | |
283 // HotSwap - for JVMTI aka Class File Replacement and PopFrame | |
284 // | |
285 // Determines whether on-the-fly class replacement and frame popping are enabled. | |
286 | |
287 #define HOTSWAP | |
288 | |
289 //---------------------------------------------------------------------------------------------------- | |
290 // Object alignment, in units of HeapWords. | |
291 // | |
292 // Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and | |
293 // reference fields can be naturally aligned. | |
294 | |
295 const int MinObjAlignment = HeapWordsPerLong; | |
296 const int MinObjAlignmentInBytes = MinObjAlignment * HeapWordSize; | |
297 const int MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; | |
298 | |
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299 const int LogMinObjAlignment = LogHeapWordsPerLong; |
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300 const int LogMinObjAlignmentInBytes = LogMinObjAlignment + LogHeapWordSize; |
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301 |
0 | 302 // Machine dependent stuff |
303 | |
304 #include "incls/_globalDefinitions_pd.hpp.incl" | |
305 | |
306 // The byte alignment to be used by Arena::Amalloc. See bugid 4169348. | |
307 // Note: this value must be a power of 2 | |
308 | |
309 #define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord) | |
310 | |
311 // Signed variants of alignment helpers. There are two versions of each, a macro | |
312 // for use in places like enum definitions that require compile-time constant | |
313 // expressions and a function for all other places so as to get type checking. | |
314 | |
315 #define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1)) | |
316 | |
317 inline intptr_t align_size_up(intptr_t size, intptr_t alignment) { | |
318 return align_size_up_(size, alignment); | |
319 } | |
320 | |
321 #define align_size_down_(size, alignment) ((size) & ~((alignment) - 1)) | |
322 | |
323 inline intptr_t align_size_down(intptr_t size, intptr_t alignment) { | |
324 return align_size_down_(size, alignment); | |
325 } | |
326 | |
327 // Align objects by rounding up their size, in HeapWord units. | |
328 | |
329 #define align_object_size_(size) align_size_up_(size, MinObjAlignment) | |
330 | |
331 inline intptr_t align_object_size(intptr_t size) { | |
332 return align_size_up(size, MinObjAlignment); | |
333 } | |
334 | |
335 // Pad out certain offsets to jlong alignment, in HeapWord units. | |
336 | |
337 #define align_object_offset_(offset) align_size_up_(offset, HeapWordsPerLong) | |
338 | |
339 inline intptr_t align_object_offset(intptr_t offset) { | |
340 return align_size_up(offset, HeapWordsPerLong); | |
341 } | |
342 | |
343 inline bool is_object_aligned(intptr_t offset) { | |
344 return offset == align_object_offset(offset); | |
345 } | |
346 | |
347 | |
348 //---------------------------------------------------------------------------------------------------- | |
349 // Utility macros for compilers | |
350 // used to silence compiler warnings | |
351 | |
352 #define Unused_Variable(var) var | |
353 | |
354 | |
355 //---------------------------------------------------------------------------------------------------- | |
356 // Miscellaneous | |
357 | |
358 // 6302670 Eliminate Hotspot __fabsf dependency | |
359 // All fabs() callers should call this function instead, which will implicitly | |
360 // convert the operand to double, avoiding a dependency on __fabsf which | |
361 // doesn't exist in early versions of Solaris 8. | |
362 inline double fabsd(double value) { | |
363 return fabs(value); | |
364 } | |
365 | |
366 inline jint low (jlong value) { return jint(value); } | |
367 inline jint high(jlong value) { return jint(value >> 32); } | |
368 | |
369 // the fancy casts are a hopefully portable way | |
370 // to do unsigned 32 to 64 bit type conversion | |
371 inline void set_low (jlong* value, jint low ) { *value &= (jlong)0xffffffff << 32; | |
372 *value |= (jlong)(julong)(juint)low; } | |
373 | |
374 inline void set_high(jlong* value, jint high) { *value &= (jlong)(julong)(juint)0xffffffff; | |
375 *value |= (jlong)high << 32; } | |
376 | |
377 inline jlong jlong_from(jint h, jint l) { | |
378 jlong result = 0; // initialization to avoid warning | |
379 set_high(&result, h); | |
380 set_low(&result, l); | |
381 return result; | |
382 } | |
383 | |
384 union jlong_accessor { | |
385 jint words[2]; | |
386 jlong long_value; | |
387 }; | |
388 | |
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389 void basic_types_init(); // cannot define here; uses assert |
0 | 390 |
391 | |
392 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
393 enum BasicType { | |
394 T_BOOLEAN = 4, | |
395 T_CHAR = 5, | |
396 T_FLOAT = 6, | |
397 T_DOUBLE = 7, | |
398 T_BYTE = 8, | |
399 T_SHORT = 9, | |
400 T_INT = 10, | |
401 T_LONG = 11, | |
402 T_OBJECT = 12, | |
403 T_ARRAY = 13, | |
404 T_VOID = 14, | |
405 T_ADDRESS = 15, | |
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406 T_NARROWOOP= 16, |
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407 T_CONFLICT = 17, // for stack value type with conflicting contents |
0 | 408 T_ILLEGAL = 99 |
409 }; | |
410 | |
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411 inline bool is_java_primitive(BasicType t) { |
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412 return T_BOOLEAN <= t && t <= T_LONG; |
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413 } |
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414 |
710 | 415 inline bool is_subword_type(BasicType t) { |
416 // these guys are processed exactly like T_INT in calling sequences: | |
417 return (t == T_BOOLEAN || t == T_CHAR || t == T_BYTE || t == T_SHORT); | |
418 } | |
419 | |
420 inline bool is_signed_subword_type(BasicType t) { | |
421 return (t == T_BYTE || t == T_SHORT); | |
422 } | |
423 | |
0 | 424 // Convert a char from a classfile signature to a BasicType |
425 inline BasicType char2type(char c) { | |
426 switch( c ) { | |
427 case 'B': return T_BYTE; | |
428 case 'C': return T_CHAR; | |
429 case 'D': return T_DOUBLE; | |
430 case 'F': return T_FLOAT; | |
431 case 'I': return T_INT; | |
432 case 'J': return T_LONG; | |
433 case 'S': return T_SHORT; | |
434 case 'Z': return T_BOOLEAN; | |
435 case 'V': return T_VOID; | |
436 case 'L': return T_OBJECT; | |
437 case '[': return T_ARRAY; | |
438 } | |
439 return T_ILLEGAL; | |
440 } | |
441 | |
442 extern char type2char_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
443 inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; } | |
444 extern int type2size[T_CONFLICT+1]; // Map BasicType to result stack elements | |
445 extern const char* type2name_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
446 inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; } | |
447 extern BasicType name2type(const char* name); | |
448 | |
449 // Auxilary math routines | |
450 // least common multiple | |
451 extern size_t lcm(size_t a, size_t b); | |
452 | |
453 | |
454 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
455 enum BasicTypeSize { | |
456 T_BOOLEAN_size = 1, | |
457 T_CHAR_size = 1, | |
458 T_FLOAT_size = 1, | |
459 T_DOUBLE_size = 2, | |
460 T_BYTE_size = 1, | |
461 T_SHORT_size = 1, | |
462 T_INT_size = 1, | |
463 T_LONG_size = 2, | |
464 T_OBJECT_size = 1, | |
465 T_ARRAY_size = 1, | |
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466 T_NARROWOOP_size = 1, |
0 | 467 T_VOID_size = 0 |
468 }; | |
469 | |
470 | |
471 // maps a BasicType to its instance field storage type: | |
472 // all sub-word integral types are widened to T_INT | |
473 extern BasicType type2field[T_CONFLICT+1]; | |
474 extern BasicType type2wfield[T_CONFLICT+1]; | |
475 | |
476 | |
477 // size in bytes | |
478 enum ArrayElementSize { | |
479 T_BOOLEAN_aelem_bytes = 1, | |
480 T_CHAR_aelem_bytes = 2, | |
481 T_FLOAT_aelem_bytes = 4, | |
482 T_DOUBLE_aelem_bytes = 8, | |
483 T_BYTE_aelem_bytes = 1, | |
484 T_SHORT_aelem_bytes = 2, | |
485 T_INT_aelem_bytes = 4, | |
486 T_LONG_aelem_bytes = 8, | |
487 #ifdef _LP64 | |
488 T_OBJECT_aelem_bytes = 8, | |
489 T_ARRAY_aelem_bytes = 8, | |
490 #else | |
491 T_OBJECT_aelem_bytes = 4, | |
492 T_ARRAY_aelem_bytes = 4, | |
493 #endif | |
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494 T_NARROWOOP_aelem_bytes = 4, |
0 | 495 T_VOID_aelem_bytes = 0 |
496 }; | |
497 | |
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498 extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element |
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499 #ifdef ASSERT |
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500 extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts |
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501 #else |
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502 inline int type2aelembytes(BasicType t) { return _type2aelembytes[t]; } |
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503 #endif |
0 | 504 |
505 | |
506 // JavaValue serves as a container for arbitrary Java values. | |
507 | |
508 class JavaValue { | |
509 | |
510 public: | |
511 typedef union JavaCallValue { | |
512 jfloat f; | |
513 jdouble d; | |
514 jint i; | |
515 jlong l; | |
516 jobject h; | |
517 } JavaCallValue; | |
518 | |
519 private: | |
520 BasicType _type; | |
521 JavaCallValue _value; | |
522 | |
523 public: | |
524 JavaValue(BasicType t = T_ILLEGAL) { _type = t; } | |
525 | |
526 JavaValue(jfloat value) { | |
527 _type = T_FLOAT; | |
528 _value.f = value; | |
529 } | |
530 | |
531 JavaValue(jdouble value) { | |
532 _type = T_DOUBLE; | |
533 _value.d = value; | |
534 } | |
535 | |
536 jfloat get_jfloat() const { return _value.f; } | |
537 jdouble get_jdouble() const { return _value.d; } | |
538 jint get_jint() const { return _value.i; } | |
539 jlong get_jlong() const { return _value.l; } | |
540 jobject get_jobject() const { return _value.h; } | |
541 JavaCallValue* get_value_addr() { return &_value; } | |
542 BasicType get_type() const { return _type; } | |
543 | |
544 void set_jfloat(jfloat f) { _value.f = f;} | |
545 void set_jdouble(jdouble d) { _value.d = d;} | |
546 void set_jint(jint i) { _value.i = i;} | |
547 void set_jlong(jlong l) { _value.l = l;} | |
548 void set_jobject(jobject h) { _value.h = h;} | |
549 void set_type(BasicType t) { _type = t; } | |
550 | |
551 jboolean get_jboolean() const { return (jboolean) (_value.i);} | |
552 jbyte get_jbyte() const { return (jbyte) (_value.i);} | |
553 jchar get_jchar() const { return (jchar) (_value.i);} | |
554 jshort get_jshort() const { return (jshort) (_value.i);} | |
555 | |
556 }; | |
557 | |
558 | |
559 #define STACK_BIAS 0 | |
560 // V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff | |
561 // in order to extend the reach of the stack pointer. | |
562 #if defined(SPARC) && defined(_LP64) | |
563 #undef STACK_BIAS | |
564 #define STACK_BIAS 0x7ff | |
565 #endif | |
566 | |
567 | |
568 // TosState describes the top-of-stack state before and after the execution of | |
569 // a bytecode or method. The top-of-stack value may be cached in one or more CPU | |
570 // registers. The TosState corresponds to the 'machine represention' of this cached | |
571 // value. There's 4 states corresponding to the JAVA types int, long, float & double | |
572 // as well as a 5th state in case the top-of-stack value is actually on the top | |
573 // of stack (in memory) and thus not cached. The atos state corresponds to the itos | |
574 // state when it comes to machine representation but is used separately for (oop) | |
575 // type specific operations (e.g. verification code). | |
576 | |
577 enum TosState { // describes the tos cache contents | |
578 btos = 0, // byte, bool tos cached | |
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579 ctos = 1, // char tos cached |
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580 stos = 2, // short tos cached |
0 | 581 itos = 3, // int tos cached |
582 ltos = 4, // long tos cached | |
583 ftos = 5, // float tos cached | |
584 dtos = 6, // double tos cached | |
585 atos = 7, // object cached | |
586 vtos = 8, // tos not cached | |
587 number_of_states, | |
588 ilgl // illegal state: should not occur | |
589 }; | |
590 | |
591 | |
592 inline TosState as_TosState(BasicType type) { | |
593 switch (type) { | |
594 case T_BYTE : return btos; | |
726
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595 case T_BOOLEAN: return btos; // FIXME: Add ztos |
0 | 596 case T_CHAR : return ctos; |
597 case T_SHORT : return stos; | |
598 case T_INT : return itos; | |
599 case T_LONG : return ltos; | |
600 case T_FLOAT : return ftos; | |
601 case T_DOUBLE : return dtos; | |
602 case T_VOID : return vtos; | |
603 case T_ARRAY : // fall through | |
604 case T_OBJECT : return atos; | |
605 } | |
606 return ilgl; | |
607 } | |
608 | |
726
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609 inline BasicType as_BasicType(TosState state) { |
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610 switch (state) { |
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611 //case ztos: return T_BOOLEAN;//FIXME |
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612 case btos : return T_BYTE; |
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613 case ctos : return T_CHAR; |
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614 case stos : return T_SHORT; |
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615 case itos : return T_INT; |
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616 case ltos : return T_LONG; |
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617 case ftos : return T_FLOAT; |
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618 case dtos : return T_DOUBLE; |
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619 case atos : return T_OBJECT; |
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620 case vtos : return T_VOID; |
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621 } |
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622 return T_ILLEGAL; |
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623 } |
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624 |
0 | 625 |
626 // Helper function to convert BasicType info into TosState | |
627 // Note: Cannot define here as it uses global constant at the time being. | |
628 TosState as_TosState(BasicType type); | |
629 | |
630 | |
631 // ReferenceType is used to distinguish between java/lang/ref/Reference subclasses | |
632 | |
633 enum ReferenceType { | |
634 REF_NONE, // Regular class | |
635 REF_OTHER, // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below | |
636 REF_SOFT, // Subclass of java/lang/ref/SoftReference | |
637 REF_WEAK, // Subclass of java/lang/ref/WeakReference | |
638 REF_FINAL, // Subclass of java/lang/ref/FinalReference | |
639 REF_PHANTOM // Subclass of java/lang/ref/PhantomReference | |
640 }; | |
641 | |
642 | |
643 // JavaThreadState keeps track of which part of the code a thread is executing in. This | |
644 // information is needed by the safepoint code. | |
645 // | |
646 // There are 4 essential states: | |
647 // | |
648 // _thread_new : Just started, but not executed init. code yet (most likely still in OS init code) | |
649 // _thread_in_native : In native code. This is a safepoint region, since all oops will be in jobject handles | |
650 // _thread_in_vm : Executing in the vm | |
651 // _thread_in_Java : Executing either interpreted or compiled Java code (or could be in a stub) | |
652 // | |
653 // Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in | |
654 // a transition from one state to another. These extra states makes it possible for the safepoint code to | |
655 // handle certain thread_states without having to suspend the thread - making the safepoint code faster. | |
656 // | |
657 // Given a state, the xxx_trans state can always be found by adding 1. | |
658 // | |
659 enum JavaThreadState { | |
660 _thread_uninitialized = 0, // should never happen (missing initialization) | |
661 _thread_new = 2, // just starting up, i.e., in process of being initialized | |
662 _thread_new_trans = 3, // corresponding transition state (not used, included for completness) | |
663 _thread_in_native = 4, // running in native code | |
664 _thread_in_native_trans = 5, // corresponding transition state | |
665 _thread_in_vm = 6, // running in VM | |
666 _thread_in_vm_trans = 7, // corresponding transition state | |
667 _thread_in_Java = 8, // running in Java or in stub code | |
668 _thread_in_Java_trans = 9, // corresponding transition state (not used, included for completness) | |
669 _thread_blocked = 10, // blocked in vm | |
670 _thread_blocked_trans = 11, // corresponding transition state | |
671 _thread_max_state = 12 // maximum thread state+1 - used for statistics allocation | |
672 }; | |
673 | |
674 | |
675 // Handy constants for deciding which compiler mode to use. | |
676 enum MethodCompilation { | |
677 InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation | |
678 InvalidOSREntryBci = -2 | |
679 }; | |
680 | |
681 // Enumeration to distinguish tiers of compilation | |
682 enum CompLevel { | |
683 CompLevel_none = 0, | |
684 CompLevel_fast_compile = 1, | |
685 CompLevel_full_optimization = 2, | |
686 | |
687 CompLevel_highest_tier = CompLevel_full_optimization, | |
688 #ifdef TIERED | |
689 CompLevel_initial_compile = CompLevel_fast_compile | |
690 #else | |
691 CompLevel_initial_compile = CompLevel_full_optimization | |
692 #endif // TIERED | |
693 }; | |
694 | |
695 inline bool is_tier1_compile(int comp_level) { | |
696 return comp_level == CompLevel_fast_compile; | |
697 } | |
698 inline bool is_tier2_compile(int comp_level) { | |
699 return comp_level == CompLevel_full_optimization; | |
700 } | |
701 inline bool is_highest_tier_compile(int comp_level) { | |
702 return comp_level == CompLevel_highest_tier; | |
703 } | |
704 | |
705 //---------------------------------------------------------------------------------------------------- | |
706 // 'Forward' declarations of frequently used classes | |
707 // (in order to reduce interface dependencies & reduce | |
708 // number of unnecessary compilations after changes) | |
709 | |
710 class symbolTable; | |
711 class ClassFileStream; | |
712 | |
713 class Event; | |
714 | |
715 class Thread; | |
716 class VMThread; | |
717 class JavaThread; | |
718 class Threads; | |
719 | |
720 class VM_Operation; | |
721 class VMOperationQueue; | |
722 | |
723 class CodeBlob; | |
724 class nmethod; | |
725 class OSRAdapter; | |
726 class I2CAdapter; | |
727 class C2IAdapter; | |
728 class CompiledIC; | |
729 class relocInfo; | |
730 class ScopeDesc; | |
731 class PcDesc; | |
732 | |
733 class Recompiler; | |
734 class Recompilee; | |
735 class RecompilationPolicy; | |
736 class RFrame; | |
737 class CompiledRFrame; | |
738 class InterpretedRFrame; | |
739 | |
740 class frame; | |
741 | |
742 class vframe; | |
743 class javaVFrame; | |
744 class interpretedVFrame; | |
745 class compiledVFrame; | |
746 class deoptimizedVFrame; | |
747 class externalVFrame; | |
748 class entryVFrame; | |
749 | |
750 class RegisterMap; | |
751 | |
752 class Mutex; | |
753 class Monitor; | |
754 class BasicLock; | |
755 class BasicObjectLock; | |
756 | |
757 class PeriodicTask; | |
758 | |
759 class JavaCallWrapper; | |
760 | |
761 class oopDesc; | |
762 | |
763 class NativeCall; | |
764 | |
765 class zone; | |
766 | |
767 class StubQueue; | |
768 | |
769 class outputStream; | |
770 | |
771 class ResourceArea; | |
772 | |
773 class DebugInformationRecorder; | |
774 class ScopeValue; | |
775 class CompressedStream; | |
776 class DebugInfoReadStream; | |
777 class DebugInfoWriteStream; | |
778 class LocationValue; | |
779 class ConstantValue; | |
780 class IllegalValue; | |
781 | |
782 class PrivilegedElement; | |
783 class MonitorArray; | |
784 | |
785 class MonitorInfo; | |
786 | |
787 class OffsetClosure; | |
788 class OopMapCache; | |
789 class InterpreterOopMap; | |
790 class OopMapCacheEntry; | |
791 class OSThread; | |
792 | |
793 typedef int (*OSThreadStartFunc)(void*); | |
794 | |
795 class Space; | |
796 | |
797 class JavaValue; | |
798 class methodHandle; | |
799 class JavaCallArguments; | |
800 | |
801 // Basic support for errors (general debug facilities not defined at this point fo the include phase) | |
802 | |
803 extern void basic_fatal(const char* msg); | |
804 | |
805 | |
806 //---------------------------------------------------------------------------------------------------- | |
807 // Special constants for debugging | |
808 | |
809 const jint badInt = -3; // generic "bad int" value | |
810 const long badAddressVal = -2; // generic "bad address" value | |
811 const long badOopVal = -1; // generic "bad oop" value | |
812 const intptr_t badHeapOopVal = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC | |
813 const int badHandleValue = 0xBC; // value used to zap vm handle area | |
814 const int badResourceValue = 0xAB; // value used to zap resource area | |
815 const int freeBlockPad = 0xBA; // value used to pad freed blocks. | |
816 const int uninitBlockPad = 0xF1; // value used to zap newly malloc'd blocks. | |
817 const intptr_t badJNIHandleVal = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area | |
818 const juint badHeapWordVal = 0xBAADBABE; // value used to zap heap after GC | |
819 const int badCodeHeapNewVal= 0xCC; // value used to zap Code heap at allocation | |
820 const int badCodeHeapFreeVal = 0xDD; // value used to zap Code heap at deallocation | |
821 | |
822 | |
823 // (These must be implemented as #defines because C++ compilers are | |
824 // not obligated to inline non-integral constants!) | |
825 #define badAddress ((address)::badAddressVal) | |
826 #define badOop ((oop)::badOopVal) | |
827 #define badHeapWord (::badHeapWordVal) | |
828 #define badJNIHandle ((oop)::badJNIHandleVal) | |
829 | |
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830 // Default TaskQueue size is 16K (32-bit) or 128K (64-bit) |
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831 #define TASKQUEUE_SIZE (NOT_LP64(1<<14) LP64_ONLY(1<<17)) |
0 | 832 |
833 //---------------------------------------------------------------------------------------------------- | |
834 // Utility functions for bitfield manipulations | |
835 | |
836 const intptr_t AllBits = ~0; // all bits set in a word | |
837 const intptr_t NoBits = 0; // no bits set in a word | |
838 const jlong NoLongBits = 0; // no bits set in a long | |
839 const intptr_t OneBit = 1; // only right_most bit set in a word | |
840 | |
841 // get a word with the n.th or the right-most or left-most n bits set | |
842 // (note: #define used only so that they can be used in enum constant definitions) | |
843 #define nth_bit(n) (n >= BitsPerWord ? 0 : OneBit << (n)) | |
844 #define right_n_bits(n) (nth_bit(n) - 1) | |
845 #define left_n_bits(n) (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n))) | |
846 | |
847 // bit-operations using a mask m | |
848 inline void set_bits (intptr_t& x, intptr_t m) { x |= m; } | |
849 inline void clear_bits (intptr_t& x, intptr_t m) { x &= ~m; } | |
850 inline intptr_t mask_bits (intptr_t x, intptr_t m) { return x & m; } | |
851 inline jlong mask_long_bits (jlong x, jlong m) { return x & m; } | |
852 inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; } | |
853 | |
854 // bit-operations using the n.th bit | |
855 inline void set_nth_bit(intptr_t& x, int n) { set_bits (x, nth_bit(n)); } | |
856 inline void clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); } | |
857 inline bool is_set_nth_bit(intptr_t x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; } | |
858 | |
859 // returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!) | |
860 inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) { | |
861 return mask_bits(x >> start_bit_no, right_n_bits(field_length)); | |
862 } | |
863 | |
864 | |
865 //---------------------------------------------------------------------------------------------------- | |
866 // Utility functions for integers | |
867 | |
868 // Avoid use of global min/max macros which may cause unwanted double | |
869 // evaluation of arguments. | |
870 #ifdef max | |
871 #undef max | |
872 #endif | |
873 | |
874 #ifdef min | |
875 #undef min | |
876 #endif | |
877 | |
878 #define max(a,b) Do_not_use_max_use_MAX2_instead | |
879 #define min(a,b) Do_not_use_min_use_MIN2_instead | |
880 | |
881 // It is necessary to use templates here. Having normal overloaded | |
882 // functions does not work because it is necessary to provide both 32- | |
883 // and 64-bit overloaded functions, which does not work, and having | |
884 // explicitly-typed versions of these routines (i.e., MAX2I, MAX2L) | |
885 // will be even more error-prone than macros. | |
886 template<class T> inline T MAX2(T a, T b) { return (a > b) ? a : b; } | |
887 template<class T> inline T MIN2(T a, T b) { return (a < b) ? a : b; } | |
888 template<class T> inline T MAX3(T a, T b, T c) { return MAX2(MAX2(a, b), c); } | |
889 template<class T> inline T MIN3(T a, T b, T c) { return MIN2(MIN2(a, b), c); } | |
890 template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); } | |
891 template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); } | |
892 | |
893 template<class T> inline T ABS(T x) { return (x > 0) ? x : -x; } | |
894 | |
895 // true if x is a power of 2, false otherwise | |
896 inline bool is_power_of_2(intptr_t x) { | |
897 return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits)); | |
898 } | |
899 | |
900 // long version of is_power_of_2 | |
901 inline bool is_power_of_2_long(jlong x) { | |
902 return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits)); | |
903 } | |
904 | |
905 //* largest i such that 2^i <= x | |
906 // A negative value of 'x' will return '31' | |
907 inline int log2_intptr(intptr_t x) { | |
908 int i = -1; | |
909 uintptr_t p = 1; | |
910 while (p != 0 && p <= (uintptr_t)x) { | |
911 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
912 i++; p *= 2; | |
913 } | |
914 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 915 // (if p = 0 then overflow occurred and i = 31) |
0 | 916 return i; |
917 } | |
918 | |
919 //* largest i such that 2^i <= x | |
920 // A negative value of 'x' will return '63' | |
921 inline int log2_long(jlong x) { | |
922 int i = -1; | |
923 julong p = 1; | |
924 while (p != 0 && p <= (julong)x) { | |
925 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
926 i++; p *= 2; | |
927 } | |
928 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 929 // (if p = 0 then overflow occurred and i = 63) |
0 | 930 return i; |
931 } | |
932 | |
933 //* the argument must be exactly a power of 2 | |
934 inline int exact_log2(intptr_t x) { | |
935 #ifdef ASSERT | |
936 if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); | |
937 #endif | |
938 return log2_intptr(x); | |
939 } | |
940 | |
568
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941 //* the argument must be exactly a power of 2 |
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942 inline int exact_log2_long(jlong x) { |
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943 #ifdef ASSERT |
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944 if (!is_power_of_2_long(x)) basic_fatal("x must be a power of 2"); |
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945 #endif |
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946 return log2_long(x); |
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947 } |
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948 |
0 | 949 |
950 // returns integer round-up to the nearest multiple of s (s must be a power of two) | |
951 inline intptr_t round_to(intptr_t x, uintx s) { | |
952 #ifdef ASSERT | |
953 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
954 #endif | |
955 const uintx m = s - 1; | |
956 return mask_bits(x + m, ~m); | |
957 } | |
958 | |
959 // returns integer round-down to the nearest multiple of s (s must be a power of two) | |
960 inline intptr_t round_down(intptr_t x, uintx s) { | |
961 #ifdef ASSERT | |
962 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
963 #endif | |
964 const uintx m = s - 1; | |
965 return mask_bits(x, ~m); | |
966 } | |
967 | |
968 | |
969 inline bool is_odd (intx x) { return x & 1; } | |
970 inline bool is_even(intx x) { return !is_odd(x); } | |
971 | |
972 // "to" should be greater than "from." | |
973 inline intx byte_size(void* from, void* to) { | |
974 return (address)to - (address)from; | |
975 } | |
976 | |
977 //---------------------------------------------------------------------------------------------------- | |
978 // Avoid non-portable casts with these routines (DEPRECATED) | |
979 | |
980 // NOTE: USE Bytes class INSTEAD WHERE POSSIBLE | |
981 // Bytes is optimized machine-specifically and may be much faster then the portable routines below. | |
982 | |
983 // Given sequence of four bytes, build into a 32-bit word | |
984 // following the conventions used in class files. | |
985 // On the 386, this could be realized with a simple address cast. | |
986 // | |
987 | |
988 // This routine takes eight bytes: | |
989 inline u8 build_u8_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
990 return ( u8(c1) << 56 ) & ( u8(0xff) << 56 ) | |
991 | ( u8(c2) << 48 ) & ( u8(0xff) << 48 ) | |
992 | ( u8(c3) << 40 ) & ( u8(0xff) << 40 ) | |
993 | ( u8(c4) << 32 ) & ( u8(0xff) << 32 ) | |
994 | ( u8(c5) << 24 ) & ( u8(0xff) << 24 ) | |
995 | ( u8(c6) << 16 ) & ( u8(0xff) << 16 ) | |
996 | ( u8(c7) << 8 ) & ( u8(0xff) << 8 ) | |
997 | ( u8(c8) << 0 ) & ( u8(0xff) << 0 ); | |
998 } | |
999 | |
1000 // This routine takes four bytes: | |
1001 inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
1002 return ( u4(c1) << 24 ) & 0xff000000 | |
1003 | ( u4(c2) << 16 ) & 0x00ff0000 | |
1004 | ( u4(c3) << 8 ) & 0x0000ff00 | |
1005 | ( u4(c4) << 0 ) & 0x000000ff; | |
1006 } | |
1007 | |
1008 // And this one works if the four bytes are contiguous in memory: | |
1009 inline u4 build_u4_from( u1* p ) { | |
1010 return build_u4_from( p[0], p[1], p[2], p[3] ); | |
1011 } | |
1012 | |
1013 // Ditto for two-byte ints: | |
1014 inline u2 build_u2_from( u1 c1, u1 c2 ) { | |
1015 return u2(( u2(c1) << 8 ) & 0xff00 | |
1016 | ( u2(c2) << 0 ) & 0x00ff); | |
1017 } | |
1018 | |
1019 // And this one works if the two bytes are contiguous in memory: | |
1020 inline u2 build_u2_from( u1* p ) { | |
1021 return build_u2_from( p[0], p[1] ); | |
1022 } | |
1023 | |
1024 // Ditto for floats: | |
1025 inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
1026 u4 u = build_u4_from( c1, c2, c3, c4 ); | |
1027 return *(jfloat*)&u; | |
1028 } | |
1029 | |
1030 inline jfloat build_float_from( u1* p ) { | |
1031 u4 u = build_u4_from( p ); | |
1032 return *(jfloat*)&u; | |
1033 } | |
1034 | |
1035 | |
1036 // now (64-bit) longs | |
1037 | |
1038 inline jlong build_long_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
1039 return ( jlong(c1) << 56 ) & ( jlong(0xff) << 56 ) | |
1040 | ( jlong(c2) << 48 ) & ( jlong(0xff) << 48 ) | |
1041 | ( jlong(c3) << 40 ) & ( jlong(0xff) << 40 ) | |
1042 | ( jlong(c4) << 32 ) & ( jlong(0xff) << 32 ) | |
1043 | ( jlong(c5) << 24 ) & ( jlong(0xff) << 24 ) | |
1044 | ( jlong(c6) << 16 ) & ( jlong(0xff) << 16 ) | |
1045 | ( jlong(c7) << 8 ) & ( jlong(0xff) << 8 ) | |
1046 | ( jlong(c8) << 0 ) & ( jlong(0xff) << 0 ); | |
1047 } | |
1048 | |
1049 inline jlong build_long_from( u1* p ) { | |
1050 return build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] ); | |
1051 } | |
1052 | |
1053 | |
1054 // Doubles, too! | |
1055 inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
1056 jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 ); | |
1057 return *(jdouble*)&u; | |
1058 } | |
1059 | |
1060 inline jdouble build_double_from( u1* p ) { | |
1061 jlong u = build_long_from( p ); | |
1062 return *(jdouble*)&u; | |
1063 } | |
1064 | |
1065 | |
1066 // Portable routines to go the other way: | |
1067 | |
1068 inline void explode_short_to( u2 x, u1& c1, u1& c2 ) { | |
1069 c1 = u1(x >> 8); | |
1070 c2 = u1(x); | |
1071 } | |
1072 | |
1073 inline void explode_short_to( u2 x, u1* p ) { | |
1074 explode_short_to( x, p[0], p[1]); | |
1075 } | |
1076 | |
1077 inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) { | |
1078 c1 = u1(x >> 24); | |
1079 c2 = u1(x >> 16); | |
1080 c3 = u1(x >> 8); | |
1081 c4 = u1(x); | |
1082 } | |
1083 | |
1084 inline void explode_int_to( u4 x, u1* p ) { | |
1085 explode_int_to( x, p[0], p[1], p[2], p[3]); | |
1086 } | |
1087 | |
1088 | |
1089 // Pack and extract shorts to/from ints: | |
1090 | |
1091 inline int extract_low_short_from_int(jint x) { | |
1092 return x & 0xffff; | |
1093 } | |
1094 | |
1095 inline int extract_high_short_from_int(jint x) { | |
1096 return (x >> 16) & 0xffff; | |
1097 } | |
1098 | |
1099 inline int build_int_from_shorts( jushort low, jushort high ) { | |
1100 return ((int)((unsigned int)high << 16) | (unsigned int)low); | |
1101 } | |
1102 | |
1103 // Printf-style formatters for fixed- and variable-width types as pointers and | |
1104 // integers. | |
1105 // | |
1106 // Each compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp) | |
1107 // must define the macro FORMAT64_MODIFIER, which is the modifier for '%x' or | |
1108 // '%d' formats to indicate a 64-bit quantity; commonly "l" (in LP64) or "ll" | |
1109 // (in ILP32). | |
1110 | |
1111 // Format 32-bit quantities. | |
1112 #define INT32_FORMAT "%d" | |
1113 #define UINT32_FORMAT "%u" | |
1114 #define INT32_FORMAT_W(width) "%" #width "d" | |
1115 #define UINT32_FORMAT_W(width) "%" #width "u" | |
1116 | |
1117 #define PTR32_FORMAT "0x%08x" | |
1118 | |
1119 // Format 64-bit quantities. | |
1120 #define INT64_FORMAT "%" FORMAT64_MODIFIER "d" | |
1121 #define UINT64_FORMAT "%" FORMAT64_MODIFIER "u" | |
1122 #define PTR64_FORMAT "0x%016" FORMAT64_MODIFIER "x" | |
1123 | |
1124 #define INT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "d" | |
1125 #define UINT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "u" | |
1126 | |
1127 // Format macros that allow the field width to be specified. The width must be | |
1128 // a string literal (e.g., "8") or a macro that evaluates to one. | |
1129 #ifdef _LP64 | |
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1130 #define UINTX_FORMAT_W(width) UINT64_FORMAT_W(width) |
0 | 1131 #define SSIZE_FORMAT_W(width) INT64_FORMAT_W(width) |
1132 #define SIZE_FORMAT_W(width) UINT64_FORMAT_W(width) | |
1133 #else | |
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1134 #define UINTX_FORMAT_W(width) UINT32_FORMAT_W(width) |
0 | 1135 #define SSIZE_FORMAT_W(width) INT32_FORMAT_W(width) |
1136 #define SIZE_FORMAT_W(width) UINT32_FORMAT_W(width) | |
1137 #endif // _LP64 | |
1138 | |
1139 // Format pointers and size_t (or size_t-like integer types) which change size | |
513
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1140 // between 32- and 64-bit. The pointer format theoretically should be "%p", |
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1141 // however, it has different output on different platforms. On Windows, the data |
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1142 // will be padded with zeros automatically. On Solaris, we can use "%016p" & |
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1143 // "%08p" on 64 bit & 32 bit platforms to make the data padded with extra zeros. |
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1144 // On Linux, "%016p" or "%08p" is not be allowed, at least on the latest GCC |
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1145 // 4.3.2. So we have to use "%016x" or "%08x" to simulate the printing format. |
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1146 // GCC 4.3.2, however requires the data to be converted to "intptr_t" when |
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1147 // using "%x". |
0 | 1148 #ifdef _LP64 |
1149 #define PTR_FORMAT PTR64_FORMAT | |
1150 #define UINTX_FORMAT UINT64_FORMAT | |
1151 #define INTX_FORMAT INT64_FORMAT | |
1152 #define SIZE_FORMAT UINT64_FORMAT | |
1153 #define SSIZE_FORMAT INT64_FORMAT | |
1154 #else // !_LP64 | |
1155 #define PTR_FORMAT PTR32_FORMAT | |
1156 #define UINTX_FORMAT UINT32_FORMAT | |
1157 #define INTX_FORMAT INT32_FORMAT | |
1158 #define SIZE_FORMAT UINT32_FORMAT | |
1159 #define SSIZE_FORMAT INT32_FORMAT | |
1160 #endif // _LP64 | |
1161 | |
1162 #define INTPTR_FORMAT PTR_FORMAT | |
1163 | |
1164 // Enable zap-a-lot if in debug version. | |
1165 | |
1166 # ifdef ASSERT | |
1167 # ifdef COMPILER2 | |
1168 # define ENABLE_ZAP_DEAD_LOCALS | |
1169 #endif /* COMPILER2 */ | |
1170 # endif /* ASSERT */ | |
1171 | |
1172 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0])) |