Mercurial > hg > truffle
annotate src/share/vm/utilities/globalDefinitions.hpp @ 726:be93aad57795
6655646: dynamic languages need dynamically linked call sites
Summary: invokedynamic instruction (JSR 292 RI)
Reviewed-by: twisti, never
author | jrose |
---|---|
date | Tue, 21 Apr 2009 23:21:04 -0700 |
parents | e5b0439ef4ae |
children | 0414c1049f15 |
rev | line source |
---|---|
0 | 1 /* |
559
7628781568e1
6795362: 32bit server compiler leads to wrong results on solaris-x86
twisti
parents:
361
diff
changeset
|
2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
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 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
62 const int oopSize = sizeof(char*); // Full-width oop |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
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 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
69 const int BytesPerOop = BytesPerWord; // Full-width oop |
0 | 70 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
71 extern int LogBytesPerHeapOop; // Oop within a java object |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
72 extern int LogBitsPerHeapOop; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
73 extern int BytesPerHeapOop; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
74 extern int BitsPerHeapOop; |
0 | 75 |
76 const int BitsPerJavaInteger = 32; | |
559
7628781568e1
6795362: 32bit server compiler leads to wrong results on solaris-x86
twisti
parents:
361
diff
changeset
|
77 const int BitsPerJavaLong = 64; |
0 | 78 const int BitsPerSize_t = size_tSize * BitsPerByte; |
79 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
80 // Size of a char[] needed to represent a jint as a string in decimal. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
81 const int jintAsStringSize = 12; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
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; | |
263
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
145
diff
changeset
|
101 private: |
0 | 102 char* i; |
361
a4f9ef0c0375
6743059: Error in spaceDecorator.cpp "optimized" build.
jmasa
parents:
269
diff
changeset
|
103 #ifndef PRODUCT |
263
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
145
diff
changeset
|
104 public: |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
145
diff
changeset
|
105 char* value() { return i; } |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
145
diff
changeset
|
106 #endif |
0 | 107 }; |
108 | |
109 // HeapWordSize must be 2^LogHeapWordSize. | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
110 const int HeapWordSize = sizeof(HeapWord); |
0 | 111 #ifdef _LP64 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
112 const int LogHeapWordSize = 3; |
0 | 113 #else |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
114 const int LogHeapWordSize = 2; |
0 | 115 #endif |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
116 const int HeapWordsPerLong = BytesPerLong / HeapWordSize; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
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 | |
142 const jint min_jint = (jint)1 << (sizeof(jint)*BitsPerByte-1); // 0x80000000 == smallest jint | |
143 const jint max_jint = (juint)min_jint - 1; // 0x7FFFFFFF == largest jint | |
144 | |
145 // Constants for converting from a base unit to milli-base units. For | |
146 // example from seconds to milliseconds and microseconds | |
147 | |
148 const int MILLIUNITS = 1000; // milli units per base unit | |
149 const int MICROUNITS = 1000000; // micro units per base unit | |
150 const int NANOUNITS = 1000000000; // nano units per base unit | |
151 | |
152 inline const char* proper_unit_for_byte_size(size_t s) { | |
153 if (s >= 10*M) { | |
154 return "M"; | |
155 } else if (s >= 10*K) { | |
156 return "K"; | |
157 } else { | |
158 return "B"; | |
159 } | |
160 } | |
161 | |
162 inline size_t byte_size_in_proper_unit(size_t s) { | |
163 if (s >= 10*M) { | |
164 return s/M; | |
165 } else if (s >= 10*K) { | |
166 return s/K; | |
167 } else { | |
168 return s; | |
169 } | |
170 } | |
171 | |
172 | |
173 //---------------------------------------------------------------------------------------------------- | |
174 // VM type definitions | |
175 | |
176 // intx and uintx are the 'extended' int and 'extended' unsigned int types; | |
177 // they are 32bit wide on a 32-bit platform, and 64bit wide on a 64bit platform. | |
178 | |
179 typedef intptr_t intx; | |
180 typedef uintptr_t uintx; | |
181 | |
182 const intx min_intx = (intx)1 << (sizeof(intx)*BitsPerByte-1); | |
183 const intx max_intx = (uintx)min_intx - 1; | |
184 const uintx max_uintx = (uintx)-1; | |
185 | |
186 // Table of values: | |
187 // sizeof intx 4 8 | |
188 // min_intx 0x80000000 0x8000000000000000 | |
189 // max_intx 0x7FFFFFFF 0x7FFFFFFFFFFFFFFF | |
190 // max_uintx 0xFFFFFFFF 0xFFFFFFFFFFFFFFFF | |
191 | |
192 typedef unsigned int uint; NEEDS_CLEANUP | |
193 | |
194 | |
195 //---------------------------------------------------------------------------------------------------- | |
196 // Java type definitions | |
197 | |
198 // All kinds of 'plain' byte addresses | |
199 typedef signed char s_char; | |
200 typedef unsigned char u_char; | |
201 typedef u_char* address; | |
202 typedef uintptr_t address_word; // unsigned integer which will hold a pointer | |
203 // except for some implementations of a C++ | |
204 // linkage pointer to function. Should never | |
205 // need one of those to be placed in this | |
206 // type anyway. | |
207 | |
208 // Utility functions to "portably" (?) bit twiddle pointers | |
209 // Where portable means keep ANSI C++ compilers quiet | |
210 | |
211 inline address set_address_bits(address x, int m) { return address(intptr_t(x) | m); } | |
212 inline address clear_address_bits(address x, int m) { return address(intptr_t(x) & ~m); } | |
213 | |
214 // Utility functions to "portably" make cast to/from function pointers. | |
215 | |
216 inline address_word mask_address_bits(address x, int m) { return address_word(x) & m; } | |
217 inline address_word castable_address(address x) { return address_word(x) ; } | |
218 inline address_word castable_address(void* x) { return address_word(x) ; } | |
219 | |
220 // Pointer subtraction. | |
221 // The idea here is to avoid ptrdiff_t, which is signed and so doesn't have | |
222 // the range we might need to find differences from one end of the heap | |
223 // to the other. | |
224 // A typical use might be: | |
225 // if (pointer_delta(end(), top()) >= size) { | |
226 // // enough room for an object of size | |
227 // ... | |
228 // and then additions like | |
229 // ... top() + size ... | |
230 // are safe because we know that top() is at least size below end(). | |
231 inline size_t pointer_delta(const void* left, | |
232 const void* right, | |
233 size_t element_size) { | |
234 return (((uintptr_t) left) - ((uintptr_t) right)) / element_size; | |
235 } | |
236 // A version specialized for HeapWord*'s. | |
237 inline size_t pointer_delta(const HeapWord* left, const HeapWord* right) { | |
238 return pointer_delta(left, right, sizeof(HeapWord)); | |
239 } | |
240 | |
241 // | |
242 // ANSI C++ does not allow casting from one pointer type to a function pointer | |
243 // directly without at best a warning. This macro accomplishes it silently | |
244 // In every case that is present at this point the value be cast is a pointer | |
245 // to a C linkage function. In somecase the type used for the cast reflects | |
246 // that linkage and a picky compiler would not complain. In other cases because | |
247 // there is no convenient place to place a typedef with extern C linkage (i.e | |
248 // a platform dependent header file) it doesn't. At this point no compiler seems | |
249 // picky enough to catch these instances (which are few). It is possible that | |
250 // using templates could fix these for all cases. This use of templates is likely | |
251 // so far from the middle of the road that it is likely to be problematic in | |
252 // many C++ compilers. | |
253 // | |
254 #define CAST_TO_FN_PTR(func_type, value) ((func_type)(castable_address(value))) | |
255 #define CAST_FROM_FN_PTR(new_type, func_ptr) ((new_type)((address_word)(func_ptr))) | |
256 | |
257 // Unsigned byte types for os and stream.hpp | |
258 | |
259 // Unsigned one, two, four and eigth byte quantities used for describing | |
260 // the .class file format. See JVM book chapter 4. | |
261 | |
262 typedef jubyte u1; | |
263 typedef jushort u2; | |
264 typedef juint u4; | |
265 typedef julong u8; | |
266 | |
267 const jubyte max_jubyte = (jubyte)-1; // 0xFF largest jubyte | |
268 const jushort max_jushort = (jushort)-1; // 0xFFFF largest jushort | |
269 const juint max_juint = (juint)-1; // 0xFFFFFFFF largest juint | |
270 const julong max_julong = (julong)-1; // 0xFF....FF largest julong | |
271 | |
272 //---------------------------------------------------------------------------------------------------- | |
273 // JVM spec restrictions | |
274 | |
275 const int max_method_code_size = 64*K - 1; // JVM spec, 2nd ed. section 4.8.1 (p.134) | |
276 | |
277 | |
278 //---------------------------------------------------------------------------------------------------- | |
279 // HotSwap - for JVMTI aka Class File Replacement and PopFrame | |
280 // | |
281 // Determines whether on-the-fly class replacement and frame popping are enabled. | |
282 | |
283 #define HOTSWAP | |
284 | |
285 //---------------------------------------------------------------------------------------------------- | |
286 // Object alignment, in units of HeapWords. | |
287 // | |
288 // Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and | |
289 // reference fields can be naturally aligned. | |
290 | |
291 const int MinObjAlignment = HeapWordsPerLong; | |
292 const int MinObjAlignmentInBytes = MinObjAlignment * HeapWordSize; | |
293 const int MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; | |
294 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
295 const int LogMinObjAlignment = LogHeapWordsPerLong; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
296 const int LogMinObjAlignmentInBytes = LogMinObjAlignment + LogHeapWordSize; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
297 |
0 | 298 // Machine dependent stuff |
299 | |
300 #include "incls/_globalDefinitions_pd.hpp.incl" | |
301 | |
302 // The byte alignment to be used by Arena::Amalloc. See bugid 4169348. | |
303 // Note: this value must be a power of 2 | |
304 | |
305 #define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord) | |
306 | |
307 // Signed variants of alignment helpers. There are two versions of each, a macro | |
308 // for use in places like enum definitions that require compile-time constant | |
309 // expressions and a function for all other places so as to get type checking. | |
310 | |
311 #define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1)) | |
312 | |
313 inline intptr_t align_size_up(intptr_t size, intptr_t alignment) { | |
314 return align_size_up_(size, alignment); | |
315 } | |
316 | |
317 #define align_size_down_(size, alignment) ((size) & ~((alignment) - 1)) | |
318 | |
319 inline intptr_t align_size_down(intptr_t size, intptr_t alignment) { | |
320 return align_size_down_(size, alignment); | |
321 } | |
322 | |
323 // Align objects by rounding up their size, in HeapWord units. | |
324 | |
325 #define align_object_size_(size) align_size_up_(size, MinObjAlignment) | |
326 | |
327 inline intptr_t align_object_size(intptr_t size) { | |
328 return align_size_up(size, MinObjAlignment); | |
329 } | |
330 | |
331 // Pad out certain offsets to jlong alignment, in HeapWord units. | |
332 | |
333 #define align_object_offset_(offset) align_size_up_(offset, HeapWordsPerLong) | |
334 | |
335 inline intptr_t align_object_offset(intptr_t offset) { | |
336 return align_size_up(offset, HeapWordsPerLong); | |
337 } | |
338 | |
339 inline bool is_object_aligned(intptr_t offset) { | |
340 return offset == align_object_offset(offset); | |
341 } | |
342 | |
343 | |
344 //---------------------------------------------------------------------------------------------------- | |
345 // Utility macros for compilers | |
346 // used to silence compiler warnings | |
347 | |
348 #define Unused_Variable(var) var | |
349 | |
350 | |
351 //---------------------------------------------------------------------------------------------------- | |
352 // Miscellaneous | |
353 | |
354 // 6302670 Eliminate Hotspot __fabsf dependency | |
355 // All fabs() callers should call this function instead, which will implicitly | |
356 // convert the operand to double, avoiding a dependency on __fabsf which | |
357 // doesn't exist in early versions of Solaris 8. | |
358 inline double fabsd(double value) { | |
359 return fabs(value); | |
360 } | |
361 | |
362 inline jint low (jlong value) { return jint(value); } | |
363 inline jint high(jlong value) { return jint(value >> 32); } | |
364 | |
365 // the fancy casts are a hopefully portable way | |
366 // to do unsigned 32 to 64 bit type conversion | |
367 inline void set_low (jlong* value, jint low ) { *value &= (jlong)0xffffffff << 32; | |
368 *value |= (jlong)(julong)(juint)low; } | |
369 | |
370 inline void set_high(jlong* value, jint high) { *value &= (jlong)(julong)(juint)0xffffffff; | |
371 *value |= (jlong)high << 32; } | |
372 | |
373 inline jlong jlong_from(jint h, jint l) { | |
374 jlong result = 0; // initialization to avoid warning | |
375 set_high(&result, h); | |
376 set_low(&result, l); | |
377 return result; | |
378 } | |
379 | |
380 union jlong_accessor { | |
381 jint words[2]; | |
382 jlong long_value; | |
383 }; | |
384 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
385 void basic_types_init(); // cannot define here; uses assert |
0 | 386 |
387 | |
388 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
389 enum BasicType { | |
390 T_BOOLEAN = 4, | |
391 T_CHAR = 5, | |
392 T_FLOAT = 6, | |
393 T_DOUBLE = 7, | |
394 T_BYTE = 8, | |
395 T_SHORT = 9, | |
396 T_INT = 10, | |
397 T_LONG = 11, | |
398 T_OBJECT = 12, | |
399 T_ARRAY = 13, | |
400 T_VOID = 14, | |
401 T_ADDRESS = 15, | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
402 T_NARROWOOP= 16, |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
403 T_CONFLICT = 17, // for stack value type with conflicting contents |
0 | 404 T_ILLEGAL = 99 |
405 }; | |
406 | |
29
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
407 inline bool is_java_primitive(BasicType t) { |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
408 return T_BOOLEAN <= t && t <= T_LONG; |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
409 } |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
410 |
710 | 411 inline bool is_subword_type(BasicType t) { |
412 // these guys are processed exactly like T_INT in calling sequences: | |
413 return (t == T_BOOLEAN || t == T_CHAR || t == T_BYTE || t == T_SHORT); | |
414 } | |
415 | |
416 inline bool is_signed_subword_type(BasicType t) { | |
417 return (t == T_BYTE || t == T_SHORT); | |
418 } | |
419 | |
0 | 420 // Convert a char from a classfile signature to a BasicType |
421 inline BasicType char2type(char c) { | |
422 switch( c ) { | |
423 case 'B': return T_BYTE; | |
424 case 'C': return T_CHAR; | |
425 case 'D': return T_DOUBLE; | |
426 case 'F': return T_FLOAT; | |
427 case 'I': return T_INT; | |
428 case 'J': return T_LONG; | |
429 case 'S': return T_SHORT; | |
430 case 'Z': return T_BOOLEAN; | |
431 case 'V': return T_VOID; | |
432 case 'L': return T_OBJECT; | |
433 case '[': return T_ARRAY; | |
434 } | |
435 return T_ILLEGAL; | |
436 } | |
437 | |
438 extern char type2char_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
439 inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; } | |
440 extern int type2size[T_CONFLICT+1]; // Map BasicType to result stack elements | |
441 extern const char* type2name_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
442 inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; } | |
443 extern BasicType name2type(const char* name); | |
444 | |
445 // Auxilary math routines | |
446 // least common multiple | |
447 extern size_t lcm(size_t a, size_t b); | |
448 | |
449 | |
450 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
451 enum BasicTypeSize { | |
452 T_BOOLEAN_size = 1, | |
453 T_CHAR_size = 1, | |
454 T_FLOAT_size = 1, | |
455 T_DOUBLE_size = 2, | |
456 T_BYTE_size = 1, | |
457 T_SHORT_size = 1, | |
458 T_INT_size = 1, | |
459 T_LONG_size = 2, | |
460 T_OBJECT_size = 1, | |
461 T_ARRAY_size = 1, | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
462 T_NARROWOOP_size = 1, |
0 | 463 T_VOID_size = 0 |
464 }; | |
465 | |
466 | |
467 // maps a BasicType to its instance field storage type: | |
468 // all sub-word integral types are widened to T_INT | |
469 extern BasicType type2field[T_CONFLICT+1]; | |
470 extern BasicType type2wfield[T_CONFLICT+1]; | |
471 | |
472 | |
473 // size in bytes | |
474 enum ArrayElementSize { | |
475 T_BOOLEAN_aelem_bytes = 1, | |
476 T_CHAR_aelem_bytes = 2, | |
477 T_FLOAT_aelem_bytes = 4, | |
478 T_DOUBLE_aelem_bytes = 8, | |
479 T_BYTE_aelem_bytes = 1, | |
480 T_SHORT_aelem_bytes = 2, | |
481 T_INT_aelem_bytes = 4, | |
482 T_LONG_aelem_bytes = 8, | |
483 #ifdef _LP64 | |
484 T_OBJECT_aelem_bytes = 8, | |
485 T_ARRAY_aelem_bytes = 8, | |
486 #else | |
487 T_OBJECT_aelem_bytes = 4, | |
488 T_ARRAY_aelem_bytes = 4, | |
489 #endif | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
29
diff
changeset
|
490 T_NARROWOOP_aelem_bytes = 4, |
0 | 491 T_VOID_aelem_bytes = 0 |
492 }; | |
493 | |
29
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
494 extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
495 #ifdef ASSERT |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
496 extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
497 #else |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
498 inline int type2aelembytes(BasicType t) { return _type2aelembytes[t]; } |
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
499 #endif |
0 | 500 |
501 | |
502 // JavaValue serves as a container for arbitrary Java values. | |
503 | |
504 class JavaValue { | |
505 | |
506 public: | |
507 typedef union JavaCallValue { | |
508 jfloat f; | |
509 jdouble d; | |
510 jint i; | |
511 jlong l; | |
512 jobject h; | |
513 } JavaCallValue; | |
514 | |
515 private: | |
516 BasicType _type; | |
517 JavaCallValue _value; | |
518 | |
519 public: | |
520 JavaValue(BasicType t = T_ILLEGAL) { _type = t; } | |
521 | |
522 JavaValue(jfloat value) { | |
523 _type = T_FLOAT; | |
524 _value.f = value; | |
525 } | |
526 | |
527 JavaValue(jdouble value) { | |
528 _type = T_DOUBLE; | |
529 _value.d = value; | |
530 } | |
531 | |
532 jfloat get_jfloat() const { return _value.f; } | |
533 jdouble get_jdouble() const { return _value.d; } | |
534 jint get_jint() const { return _value.i; } | |
535 jlong get_jlong() const { return _value.l; } | |
536 jobject get_jobject() const { return _value.h; } | |
537 JavaCallValue* get_value_addr() { return &_value; } | |
538 BasicType get_type() const { return _type; } | |
539 | |
540 void set_jfloat(jfloat f) { _value.f = f;} | |
541 void set_jdouble(jdouble d) { _value.d = d;} | |
542 void set_jint(jint i) { _value.i = i;} | |
543 void set_jlong(jlong l) { _value.l = l;} | |
544 void set_jobject(jobject h) { _value.h = h;} | |
545 void set_type(BasicType t) { _type = t; } | |
546 | |
547 jboolean get_jboolean() const { return (jboolean) (_value.i);} | |
548 jbyte get_jbyte() const { return (jbyte) (_value.i);} | |
549 jchar get_jchar() const { return (jchar) (_value.i);} | |
550 jshort get_jshort() const { return (jshort) (_value.i);} | |
551 | |
552 }; | |
553 | |
554 | |
555 #define STACK_BIAS 0 | |
556 // V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff | |
557 // in order to extend the reach of the stack pointer. | |
558 #if defined(SPARC) && defined(_LP64) | |
559 #undef STACK_BIAS | |
560 #define STACK_BIAS 0x7ff | |
561 #endif | |
562 | |
563 | |
564 // TosState describes the top-of-stack state before and after the execution of | |
565 // a bytecode or method. The top-of-stack value may be cached in one or more CPU | |
566 // registers. The TosState corresponds to the 'machine represention' of this cached | |
567 // value. There's 4 states corresponding to the JAVA types int, long, float & double | |
568 // as well as a 5th state in case the top-of-stack value is actually on the top | |
569 // of stack (in memory) and thus not cached. The atos state corresponds to the itos | |
570 // state when it comes to machine representation but is used separately for (oop) | |
571 // type specific operations (e.g. verification code). | |
572 | |
573 enum TosState { // describes the tos cache contents | |
574 btos = 0, // byte, bool tos cached | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
575 ctos = 1, // char tos cached |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
576 stos = 2, // short tos cached |
0 | 577 itos = 3, // int tos cached |
578 ltos = 4, // long tos cached | |
579 ftos = 5, // float tos cached | |
580 dtos = 6, // double tos cached | |
581 atos = 7, // object cached | |
582 vtos = 8, // tos not cached | |
583 number_of_states, | |
584 ilgl // illegal state: should not occur | |
585 }; | |
586 | |
587 | |
588 inline TosState as_TosState(BasicType type) { | |
589 switch (type) { | |
590 case T_BYTE : return btos; | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
591 case T_BOOLEAN: return btos; // FIXME: Add ztos |
0 | 592 case T_CHAR : return ctos; |
593 case T_SHORT : return stos; | |
594 case T_INT : return itos; | |
595 case T_LONG : return ltos; | |
596 case T_FLOAT : return ftos; | |
597 case T_DOUBLE : return dtos; | |
598 case T_VOID : return vtos; | |
599 case T_ARRAY : // fall through | |
600 case T_OBJECT : return atos; | |
601 } | |
602 return ilgl; | |
603 } | |
604 | |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
605 inline BasicType as_BasicType(TosState state) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
606 switch (state) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
607 //case ztos: return T_BOOLEAN;//FIXME |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
608 case btos : return T_BYTE; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
609 case ctos : return T_CHAR; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
610 case stos : return T_SHORT; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
611 case itos : return T_INT; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
612 case ltos : return T_LONG; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
613 case ftos : return T_FLOAT; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
614 case dtos : return T_DOUBLE; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
615 case atos : return T_OBJECT; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
616 case vtos : return T_VOID; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
617 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
618 return T_ILLEGAL; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
619 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
710
diff
changeset
|
620 |
0 | 621 |
622 // Helper function to convert BasicType info into TosState | |
623 // Note: Cannot define here as it uses global constant at the time being. | |
624 TosState as_TosState(BasicType type); | |
625 | |
626 | |
627 // ReferenceType is used to distinguish between java/lang/ref/Reference subclasses | |
628 | |
629 enum ReferenceType { | |
630 REF_NONE, // Regular class | |
631 REF_OTHER, // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below | |
632 REF_SOFT, // Subclass of java/lang/ref/SoftReference | |
633 REF_WEAK, // Subclass of java/lang/ref/WeakReference | |
634 REF_FINAL, // Subclass of java/lang/ref/FinalReference | |
635 REF_PHANTOM // Subclass of java/lang/ref/PhantomReference | |
636 }; | |
637 | |
638 | |
639 // JavaThreadState keeps track of which part of the code a thread is executing in. This | |
640 // information is needed by the safepoint code. | |
641 // | |
642 // There are 4 essential states: | |
643 // | |
644 // _thread_new : Just started, but not executed init. code yet (most likely still in OS init code) | |
645 // _thread_in_native : In native code. This is a safepoint region, since all oops will be in jobject handles | |
646 // _thread_in_vm : Executing in the vm | |
647 // _thread_in_Java : Executing either interpreted or compiled Java code (or could be in a stub) | |
648 // | |
649 // Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in | |
650 // a transition from one state to another. These extra states makes it possible for the safepoint code to | |
651 // handle certain thread_states without having to suspend the thread - making the safepoint code faster. | |
652 // | |
653 // Given a state, the xxx_trans state can always be found by adding 1. | |
654 // | |
655 enum JavaThreadState { | |
656 _thread_uninitialized = 0, // should never happen (missing initialization) | |
657 _thread_new = 2, // just starting up, i.e., in process of being initialized | |
658 _thread_new_trans = 3, // corresponding transition state (not used, included for completness) | |
659 _thread_in_native = 4, // running in native code | |
660 _thread_in_native_trans = 5, // corresponding transition state | |
661 _thread_in_vm = 6, // running in VM | |
662 _thread_in_vm_trans = 7, // corresponding transition state | |
663 _thread_in_Java = 8, // running in Java or in stub code | |
664 _thread_in_Java_trans = 9, // corresponding transition state (not used, included for completness) | |
665 _thread_blocked = 10, // blocked in vm | |
666 _thread_blocked_trans = 11, // corresponding transition state | |
667 _thread_max_state = 12 // maximum thread state+1 - used for statistics allocation | |
668 }; | |
669 | |
670 | |
671 // Handy constants for deciding which compiler mode to use. | |
672 enum MethodCompilation { | |
673 InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation | |
674 InvalidOSREntryBci = -2 | |
675 }; | |
676 | |
677 // Enumeration to distinguish tiers of compilation | |
678 enum CompLevel { | |
679 CompLevel_none = 0, | |
680 CompLevel_fast_compile = 1, | |
681 CompLevel_full_optimization = 2, | |
682 | |
683 CompLevel_highest_tier = CompLevel_full_optimization, | |
684 #ifdef TIERED | |
685 CompLevel_initial_compile = CompLevel_fast_compile | |
686 #else | |
687 CompLevel_initial_compile = CompLevel_full_optimization | |
688 #endif // TIERED | |
689 }; | |
690 | |
691 inline bool is_tier1_compile(int comp_level) { | |
692 return comp_level == CompLevel_fast_compile; | |
693 } | |
694 inline bool is_tier2_compile(int comp_level) { | |
695 return comp_level == CompLevel_full_optimization; | |
696 } | |
697 inline bool is_highest_tier_compile(int comp_level) { | |
698 return comp_level == CompLevel_highest_tier; | |
699 } | |
700 | |
701 //---------------------------------------------------------------------------------------------------- | |
702 // 'Forward' declarations of frequently used classes | |
703 // (in order to reduce interface dependencies & reduce | |
704 // number of unnecessary compilations after changes) | |
705 | |
706 class symbolTable; | |
707 class ClassFileStream; | |
708 | |
709 class Event; | |
710 | |
711 class Thread; | |
712 class VMThread; | |
713 class JavaThread; | |
714 class Threads; | |
715 | |
716 class VM_Operation; | |
717 class VMOperationQueue; | |
718 | |
719 class CodeBlob; | |
720 class nmethod; | |
721 class OSRAdapter; | |
722 class I2CAdapter; | |
723 class C2IAdapter; | |
724 class CompiledIC; | |
725 class relocInfo; | |
726 class ScopeDesc; | |
727 class PcDesc; | |
728 | |
729 class Recompiler; | |
730 class Recompilee; | |
731 class RecompilationPolicy; | |
732 class RFrame; | |
733 class CompiledRFrame; | |
734 class InterpretedRFrame; | |
735 | |
736 class frame; | |
737 | |
738 class vframe; | |
739 class javaVFrame; | |
740 class interpretedVFrame; | |
741 class compiledVFrame; | |
742 class deoptimizedVFrame; | |
743 class externalVFrame; | |
744 class entryVFrame; | |
745 | |
746 class RegisterMap; | |
747 | |
748 class Mutex; | |
749 class Monitor; | |
750 class BasicLock; | |
751 class BasicObjectLock; | |
752 | |
753 class PeriodicTask; | |
754 | |
755 class JavaCallWrapper; | |
756 | |
757 class oopDesc; | |
758 | |
759 class NativeCall; | |
760 | |
761 class zone; | |
762 | |
763 class StubQueue; | |
764 | |
765 class outputStream; | |
766 | |
767 class ResourceArea; | |
768 | |
769 class DebugInformationRecorder; | |
770 class ScopeValue; | |
771 class CompressedStream; | |
772 class DebugInfoReadStream; | |
773 class DebugInfoWriteStream; | |
774 class LocationValue; | |
775 class ConstantValue; | |
776 class IllegalValue; | |
777 | |
778 class PrivilegedElement; | |
779 class MonitorArray; | |
780 | |
781 class MonitorInfo; | |
782 | |
783 class OffsetClosure; | |
784 class OopMapCache; | |
785 class InterpreterOopMap; | |
786 class OopMapCacheEntry; | |
787 class OSThread; | |
788 | |
789 typedef int (*OSThreadStartFunc)(void*); | |
790 | |
791 class Space; | |
792 | |
793 class JavaValue; | |
794 class methodHandle; | |
795 class JavaCallArguments; | |
796 | |
797 // Basic support for errors (general debug facilities not defined at this point fo the include phase) | |
798 | |
799 extern void basic_fatal(const char* msg); | |
800 | |
801 | |
802 //---------------------------------------------------------------------------------------------------- | |
803 // Special constants for debugging | |
804 | |
805 const jint badInt = -3; // generic "bad int" value | |
806 const long badAddressVal = -2; // generic "bad address" value | |
807 const long badOopVal = -1; // generic "bad oop" value | |
808 const intptr_t badHeapOopVal = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC | |
809 const int badHandleValue = 0xBC; // value used to zap vm handle area | |
810 const int badResourceValue = 0xAB; // value used to zap resource area | |
811 const int freeBlockPad = 0xBA; // value used to pad freed blocks. | |
812 const int uninitBlockPad = 0xF1; // value used to zap newly malloc'd blocks. | |
813 const intptr_t badJNIHandleVal = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area | |
814 const juint badHeapWordVal = 0xBAADBABE; // value used to zap heap after GC | |
815 const int badCodeHeapNewVal= 0xCC; // value used to zap Code heap at allocation | |
816 const int badCodeHeapFreeVal = 0xDD; // value used to zap Code heap at deallocation | |
817 | |
818 | |
819 // (These must be implemented as #defines because C++ compilers are | |
820 // not obligated to inline non-integral constants!) | |
821 #define badAddress ((address)::badAddressVal) | |
822 #define badOop ((oop)::badOopVal) | |
823 #define badHeapWord (::badHeapWordVal) | |
824 #define badJNIHandle ((oop)::badJNIHandleVal) | |
825 | |
826 | |
827 //---------------------------------------------------------------------------------------------------- | |
828 // Utility functions for bitfield manipulations | |
829 | |
830 const intptr_t AllBits = ~0; // all bits set in a word | |
831 const intptr_t NoBits = 0; // no bits set in a word | |
832 const jlong NoLongBits = 0; // no bits set in a long | |
833 const intptr_t OneBit = 1; // only right_most bit set in a word | |
834 | |
835 // get a word with the n.th or the right-most or left-most n bits set | |
836 // (note: #define used only so that they can be used in enum constant definitions) | |
837 #define nth_bit(n) (n >= BitsPerWord ? 0 : OneBit << (n)) | |
838 #define right_n_bits(n) (nth_bit(n) - 1) | |
839 #define left_n_bits(n) (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n))) | |
840 | |
841 // bit-operations using a mask m | |
842 inline void set_bits (intptr_t& x, intptr_t m) { x |= m; } | |
843 inline void clear_bits (intptr_t& x, intptr_t m) { x &= ~m; } | |
844 inline intptr_t mask_bits (intptr_t x, intptr_t m) { return x & m; } | |
845 inline jlong mask_long_bits (jlong x, jlong m) { return x & m; } | |
846 inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; } | |
847 | |
848 // bit-operations using the n.th bit | |
849 inline void set_nth_bit(intptr_t& x, int n) { set_bits (x, nth_bit(n)); } | |
850 inline void clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); } | |
851 inline bool is_set_nth_bit(intptr_t x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; } | |
852 | |
853 // returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!) | |
854 inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) { | |
855 return mask_bits(x >> start_bit_no, right_n_bits(field_length)); | |
856 } | |
857 | |
858 | |
859 //---------------------------------------------------------------------------------------------------- | |
860 // Utility functions for integers | |
861 | |
862 // Avoid use of global min/max macros which may cause unwanted double | |
863 // evaluation of arguments. | |
864 #ifdef max | |
865 #undef max | |
866 #endif | |
867 | |
868 #ifdef min | |
869 #undef min | |
870 #endif | |
871 | |
872 #define max(a,b) Do_not_use_max_use_MAX2_instead | |
873 #define min(a,b) Do_not_use_min_use_MIN2_instead | |
874 | |
875 // It is necessary to use templates here. Having normal overloaded | |
876 // functions does not work because it is necessary to provide both 32- | |
877 // and 64-bit overloaded functions, which does not work, and having | |
878 // explicitly-typed versions of these routines (i.e., MAX2I, MAX2L) | |
879 // will be even more error-prone than macros. | |
880 template<class T> inline T MAX2(T a, T b) { return (a > b) ? a : b; } | |
881 template<class T> inline T MIN2(T a, T b) { return (a < b) ? a : b; } | |
882 template<class T> inline T MAX3(T a, T b, T c) { return MAX2(MAX2(a, b), c); } | |
883 template<class T> inline T MIN3(T a, T b, T c) { return MIN2(MIN2(a, b), c); } | |
884 template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); } | |
885 template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); } | |
886 | |
887 template<class T> inline T ABS(T x) { return (x > 0) ? x : -x; } | |
888 | |
889 // true if x is a power of 2, false otherwise | |
890 inline bool is_power_of_2(intptr_t x) { | |
891 return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits)); | |
892 } | |
893 | |
894 // long version of is_power_of_2 | |
895 inline bool is_power_of_2_long(jlong x) { | |
896 return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits)); | |
897 } | |
898 | |
899 //* largest i such that 2^i <= x | |
900 // A negative value of 'x' will return '31' | |
901 inline int log2_intptr(intptr_t x) { | |
902 int i = -1; | |
903 uintptr_t p = 1; | |
904 while (p != 0 && p <= (uintptr_t)x) { | |
905 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
906 i++; p *= 2; | |
907 } | |
908 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 909 // (if p = 0 then overflow occurred and i = 31) |
0 | 910 return i; |
911 } | |
912 | |
913 //* largest i such that 2^i <= x | |
914 // A negative value of 'x' will return '63' | |
915 inline int log2_long(jlong x) { | |
916 int i = -1; | |
917 julong p = 1; | |
918 while (p != 0 && p <= (julong)x) { | |
919 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
920 i++; p *= 2; | |
921 } | |
922 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
605 | 923 // (if p = 0 then overflow occurred and i = 63) |
0 | 924 return i; |
925 } | |
926 | |
927 //* the argument must be exactly a power of 2 | |
928 inline int exact_log2(intptr_t x) { | |
929 #ifdef ASSERT | |
930 if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); | |
931 #endif | |
932 return log2_intptr(x); | |
933 } | |
934 | |
568
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
935 //* the argument must be exactly a power of 2 |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
936 inline int exact_log2_long(jlong x) { |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
937 #ifdef ASSERT |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
938 if (!is_power_of_2_long(x)) basic_fatal("x must be a power of 2"); |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
939 #endif |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
940 return log2_long(x); |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
941 } |
30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
twisti
parents:
559
diff
changeset
|
942 |
0 | 943 |
944 // returns integer round-up to the nearest multiple of s (s must be a power of two) | |
945 inline intptr_t round_to(intptr_t x, uintx s) { | |
946 #ifdef ASSERT | |
947 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
948 #endif | |
949 const uintx m = s - 1; | |
950 return mask_bits(x + m, ~m); | |
951 } | |
952 | |
953 // returns integer round-down to the nearest multiple of s (s must be a power of two) | |
954 inline intptr_t round_down(intptr_t x, uintx s) { | |
955 #ifdef ASSERT | |
956 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
957 #endif | |
958 const uintx m = s - 1; | |
959 return mask_bits(x, ~m); | |
960 } | |
961 | |
962 | |
963 inline bool is_odd (intx x) { return x & 1; } | |
964 inline bool is_even(intx x) { return !is_odd(x); } | |
965 | |
966 // "to" should be greater than "from." | |
967 inline intx byte_size(void* from, void* to) { | |
968 return (address)to - (address)from; | |
969 } | |
970 | |
971 //---------------------------------------------------------------------------------------------------- | |
972 // Avoid non-portable casts with these routines (DEPRECATED) | |
973 | |
974 // NOTE: USE Bytes class INSTEAD WHERE POSSIBLE | |
975 // Bytes is optimized machine-specifically and may be much faster then the portable routines below. | |
976 | |
977 // Given sequence of four bytes, build into a 32-bit word | |
978 // following the conventions used in class files. | |
979 // On the 386, this could be realized with a simple address cast. | |
980 // | |
981 | |
982 // This routine takes eight bytes: | |
983 inline u8 build_u8_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
984 return ( u8(c1) << 56 ) & ( u8(0xff) << 56 ) | |
985 | ( u8(c2) << 48 ) & ( u8(0xff) << 48 ) | |
986 | ( u8(c3) << 40 ) & ( u8(0xff) << 40 ) | |
987 | ( u8(c4) << 32 ) & ( u8(0xff) << 32 ) | |
988 | ( u8(c5) << 24 ) & ( u8(0xff) << 24 ) | |
989 | ( u8(c6) << 16 ) & ( u8(0xff) << 16 ) | |
990 | ( u8(c7) << 8 ) & ( u8(0xff) << 8 ) | |
991 | ( u8(c8) << 0 ) & ( u8(0xff) << 0 ); | |
992 } | |
993 | |
994 // This routine takes four bytes: | |
995 inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
996 return ( u4(c1) << 24 ) & 0xff000000 | |
997 | ( u4(c2) << 16 ) & 0x00ff0000 | |
998 | ( u4(c3) << 8 ) & 0x0000ff00 | |
999 | ( u4(c4) << 0 ) & 0x000000ff; | |
1000 } | |
1001 | |
1002 // And this one works if the four bytes are contiguous in memory: | |
1003 inline u4 build_u4_from( u1* p ) { | |
1004 return build_u4_from( p[0], p[1], p[2], p[3] ); | |
1005 } | |
1006 | |
1007 // Ditto for two-byte ints: | |
1008 inline u2 build_u2_from( u1 c1, u1 c2 ) { | |
1009 return u2(( u2(c1) << 8 ) & 0xff00 | |
1010 | ( u2(c2) << 0 ) & 0x00ff); | |
1011 } | |
1012 | |
1013 // And this one works if the two bytes are contiguous in memory: | |
1014 inline u2 build_u2_from( u1* p ) { | |
1015 return build_u2_from( p[0], p[1] ); | |
1016 } | |
1017 | |
1018 // Ditto for floats: | |
1019 inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
1020 u4 u = build_u4_from( c1, c2, c3, c4 ); | |
1021 return *(jfloat*)&u; | |
1022 } | |
1023 | |
1024 inline jfloat build_float_from( u1* p ) { | |
1025 u4 u = build_u4_from( p ); | |
1026 return *(jfloat*)&u; | |
1027 } | |
1028 | |
1029 | |
1030 // now (64-bit) longs | |
1031 | |
1032 inline jlong build_long_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
1033 return ( jlong(c1) << 56 ) & ( jlong(0xff) << 56 ) | |
1034 | ( jlong(c2) << 48 ) & ( jlong(0xff) << 48 ) | |
1035 | ( jlong(c3) << 40 ) & ( jlong(0xff) << 40 ) | |
1036 | ( jlong(c4) << 32 ) & ( jlong(0xff) << 32 ) | |
1037 | ( jlong(c5) << 24 ) & ( jlong(0xff) << 24 ) | |
1038 | ( jlong(c6) << 16 ) & ( jlong(0xff) << 16 ) | |
1039 | ( jlong(c7) << 8 ) & ( jlong(0xff) << 8 ) | |
1040 | ( jlong(c8) << 0 ) & ( jlong(0xff) << 0 ); | |
1041 } | |
1042 | |
1043 inline jlong build_long_from( u1* p ) { | |
1044 return build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] ); | |
1045 } | |
1046 | |
1047 | |
1048 // Doubles, too! | |
1049 inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
1050 jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 ); | |
1051 return *(jdouble*)&u; | |
1052 } | |
1053 | |
1054 inline jdouble build_double_from( u1* p ) { | |
1055 jlong u = build_long_from( p ); | |
1056 return *(jdouble*)&u; | |
1057 } | |
1058 | |
1059 | |
1060 // Portable routines to go the other way: | |
1061 | |
1062 inline void explode_short_to( u2 x, u1& c1, u1& c2 ) { | |
1063 c1 = u1(x >> 8); | |
1064 c2 = u1(x); | |
1065 } | |
1066 | |
1067 inline void explode_short_to( u2 x, u1* p ) { | |
1068 explode_short_to( x, p[0], p[1]); | |
1069 } | |
1070 | |
1071 inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) { | |
1072 c1 = u1(x >> 24); | |
1073 c2 = u1(x >> 16); | |
1074 c3 = u1(x >> 8); | |
1075 c4 = u1(x); | |
1076 } | |
1077 | |
1078 inline void explode_int_to( u4 x, u1* p ) { | |
1079 explode_int_to( x, p[0], p[1], p[2], p[3]); | |
1080 } | |
1081 | |
1082 | |
1083 // Pack and extract shorts to/from ints: | |
1084 | |
1085 inline int extract_low_short_from_int(jint x) { | |
1086 return x & 0xffff; | |
1087 } | |
1088 | |
1089 inline int extract_high_short_from_int(jint x) { | |
1090 return (x >> 16) & 0xffff; | |
1091 } | |
1092 | |
1093 inline int build_int_from_shorts( jushort low, jushort high ) { | |
1094 return ((int)((unsigned int)high << 16) | (unsigned int)low); | |
1095 } | |
1096 | |
1097 // Printf-style formatters for fixed- and variable-width types as pointers and | |
1098 // integers. | |
1099 // | |
1100 // Each compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp) | |
1101 // must define the macro FORMAT64_MODIFIER, which is the modifier for '%x' or | |
1102 // '%d' formats to indicate a 64-bit quantity; commonly "l" (in LP64) or "ll" | |
1103 // (in ILP32). | |
1104 | |
1105 // Format 32-bit quantities. | |
1106 #define INT32_FORMAT "%d" | |
1107 #define UINT32_FORMAT "%u" | |
1108 #define INT32_FORMAT_W(width) "%" #width "d" | |
1109 #define UINT32_FORMAT_W(width) "%" #width "u" | |
1110 | |
1111 #define PTR32_FORMAT "0x%08x" | |
1112 | |
1113 // Format 64-bit quantities. | |
1114 #define INT64_FORMAT "%" FORMAT64_MODIFIER "d" | |
1115 #define UINT64_FORMAT "%" FORMAT64_MODIFIER "u" | |
1116 #define PTR64_FORMAT "0x%016" FORMAT64_MODIFIER "x" | |
1117 | |
1118 #define INT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "d" | |
1119 #define UINT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "u" | |
1120 | |
1121 // Format macros that allow the field width to be specified. The width must be | |
1122 // a string literal (e.g., "8") or a macro that evaluates to one. | |
1123 #ifdef _LP64 | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
361
diff
changeset
|
1124 #define UINTX_FORMAT_W(width) UINT64_FORMAT_W(width) |
0 | 1125 #define SSIZE_FORMAT_W(width) INT64_FORMAT_W(width) |
1126 #define SIZE_FORMAT_W(width) UINT64_FORMAT_W(width) | |
1127 #else | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
361
diff
changeset
|
1128 #define UINTX_FORMAT_W(width) UINT32_FORMAT_W(width) |
0 | 1129 #define SSIZE_FORMAT_W(width) INT32_FORMAT_W(width) |
1130 #define SIZE_FORMAT_W(width) UINT32_FORMAT_W(width) | |
1131 #endif // _LP64 | |
1132 | |
1133 // Format pointers and size_t (or size_t-like integer types) which change size | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
361
diff
changeset
|
1134 // between 32- and 64-bit. The pointer format theoretically should be "%p", |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
361
diff
changeset
|
1135 // however, it has different output on different platforms. On Windows, the data |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
361
diff
changeset
|
1136 // will be padded with zeros automatically. On Solaris, we can use "%016p" & |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
361
diff
changeset
|
1137 // "%08p" on 64 bit & 32 bit platforms to make the data padded with extra zeros. |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
361
diff
changeset
|
1138 // On Linux, "%016p" or "%08p" is not be allowed, at least on the latest GCC |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
361
diff
changeset
|
1139 // 4.3.2. So we have to use "%016x" or "%08x" to simulate the printing format. |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
361
diff
changeset
|
1140 // GCC 4.3.2, however requires the data to be converted to "intptr_t" when |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
361
diff
changeset
|
1141 // using "%x". |
0 | 1142 #ifdef _LP64 |
1143 #define PTR_FORMAT PTR64_FORMAT | |
1144 #define UINTX_FORMAT UINT64_FORMAT | |
1145 #define INTX_FORMAT INT64_FORMAT | |
1146 #define SIZE_FORMAT UINT64_FORMAT | |
1147 #define SSIZE_FORMAT INT64_FORMAT | |
1148 #else // !_LP64 | |
1149 #define PTR_FORMAT PTR32_FORMAT | |
1150 #define UINTX_FORMAT UINT32_FORMAT | |
1151 #define INTX_FORMAT INT32_FORMAT | |
1152 #define SIZE_FORMAT UINT32_FORMAT | |
1153 #define SSIZE_FORMAT INT32_FORMAT | |
1154 #endif // _LP64 | |
1155 | |
1156 #define INTPTR_FORMAT PTR_FORMAT | |
1157 | |
1158 // Enable zap-a-lot if in debug version. | |
1159 | |
1160 # ifdef ASSERT | |
1161 # ifdef COMPILER2 | |
1162 # define ENABLE_ZAP_DEAD_LOCALS | |
1163 #endif /* COMPILER2 */ | |
1164 # endif /* ASSERT */ | |
1165 | |
1166 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0])) |