Mercurial > hg > truffle
annotate src/share/vm/utilities/globalDefinitions.hpp @ 29:d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
Summary: T_ADDRESS size is defined as 'int' size (4 bytes) but C2 use it for raw pointers and as memory type for StoreP and LoadP nodes.
Reviewed-by: jrose
| author | kvn |
|---|---|
| date | Mon, 25 Feb 2008 15:05:44 -0800 |
| parents | a61af66fc99e |
| children | ba764ed4b6f2 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. | |
| 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 | |
| 62 const int oopSize = sizeof(char*); | |
| 63 const int wordSize = sizeof(char*); | |
| 64 const int longSize = sizeof(jlong); | |
| 65 const int jintSize = sizeof(jint); | |
| 66 const int size_tSize = sizeof(size_t); | |
| 67 | |
| 68 // Size of a char[] needed to represent a jint as a string in decimal. | |
| 69 const int jintAsStringSize = 12; | |
| 70 | |
| 71 const int LogBytesPerOop = LogBytesPerWord; | |
| 72 const int LogBitsPerOop = LogBitsPerWord; | |
| 73 const int BytesPerOop = 1 << LogBytesPerOop; | |
| 74 const int BitsPerOop = 1 << LogBitsPerOop; | |
| 75 | |
| 76 const int BitsPerJavaInteger = 32; | |
| 77 const int BitsPerSize_t = size_tSize * BitsPerByte; | |
| 78 | |
| 79 // In fact this should be | |
| 80 // log2_intptr(sizeof(class JavaThread)) - log2_intptr(64); | |
| 81 // see os::set_memory_serialize_page() | |
| 82 #ifdef _LP64 | |
| 83 const int SerializePageShiftCount = 4; | |
| 84 #else | |
| 85 const int SerializePageShiftCount = 3; | |
| 86 #endif | |
| 87 | |
| 88 // An opaque struct of heap-word width, so that HeapWord* can be a generic | |
| 89 // pointer into the heap. We require that object sizes be measured in | |
| 90 // units of heap words, so that that | |
| 91 // HeapWord* hw; | |
| 92 // hw += oop(hw)->foo(); | |
| 93 // works, where foo is a method (like size or scavenge) that returns the | |
| 94 // object size. | |
| 95 class HeapWord { | |
| 96 friend class VMStructs; | |
| 97 private: | |
| 98 char* i; | |
| 99 }; | |
| 100 | |
| 101 // HeapWordSize must be 2^LogHeapWordSize. | |
| 102 const int HeapWordSize = sizeof(HeapWord); | |
| 103 #ifdef _LP64 | |
| 104 const int LogHeapWordSize = 3; | |
| 105 #else | |
| 106 const int LogHeapWordSize = 2; | |
| 107 #endif | |
| 108 const int HeapWordsPerOop = oopSize / HeapWordSize; | |
| 109 const int HeapWordsPerLong = BytesPerLong / HeapWordSize; | |
| 110 | |
| 111 // The larger HeapWordSize for 64bit requires larger heaps | |
| 112 // for the same application running in 64bit. See bug 4967770. | |
| 113 // The minimum alignment to a heap word size is done. Other | |
| 114 // parts of the memory system may required additional alignment | |
| 115 // and are responsible for those alignments. | |
| 116 #ifdef _LP64 | |
| 117 #define ScaleForWordSize(x) align_size_down_((x) * 13 / 10, HeapWordSize) | |
| 118 #else | |
| 119 #define ScaleForWordSize(x) (x) | |
| 120 #endif | |
| 121 | |
| 122 // The minimum number of native machine words necessary to contain "byte_size" | |
| 123 // bytes. | |
| 124 inline size_t heap_word_size(size_t byte_size) { | |
| 125 return (byte_size + (HeapWordSize-1)) >> LogHeapWordSize; | |
| 126 } | |
| 127 | |
| 128 | |
| 129 const size_t K = 1024; | |
| 130 const size_t M = K*K; | |
| 131 const size_t G = M*K; | |
| 132 const size_t HWperKB = K / sizeof(HeapWord); | |
| 133 | |
| 134 const jint min_jint = (jint)1 << (sizeof(jint)*BitsPerByte-1); // 0x80000000 == smallest jint | |
| 135 const jint max_jint = (juint)min_jint - 1; // 0x7FFFFFFF == largest jint | |
| 136 | |
| 137 // Constants for converting from a base unit to milli-base units. For | |
| 138 // example from seconds to milliseconds and microseconds | |
| 139 | |
| 140 const int MILLIUNITS = 1000; // milli units per base unit | |
| 141 const int MICROUNITS = 1000000; // micro units per base unit | |
| 142 const int NANOUNITS = 1000000000; // nano units per base unit | |
| 143 | |
| 144 inline const char* proper_unit_for_byte_size(size_t s) { | |
| 145 if (s >= 10*M) { | |
| 146 return "M"; | |
| 147 } else if (s >= 10*K) { | |
| 148 return "K"; | |
| 149 } else { | |
| 150 return "B"; | |
| 151 } | |
| 152 } | |
| 153 | |
| 154 inline size_t byte_size_in_proper_unit(size_t s) { | |
| 155 if (s >= 10*M) { | |
| 156 return s/M; | |
| 157 } else if (s >= 10*K) { | |
| 158 return s/K; | |
| 159 } else { | |
| 160 return s; | |
| 161 } | |
| 162 } | |
| 163 | |
| 164 | |
| 165 //---------------------------------------------------------------------------------------------------- | |
| 166 // VM type definitions | |
| 167 | |
| 168 // intx and uintx are the 'extended' int and 'extended' unsigned int types; | |
| 169 // they are 32bit wide on a 32-bit platform, and 64bit wide on a 64bit platform. | |
| 170 | |
| 171 typedef intptr_t intx; | |
| 172 typedef uintptr_t uintx; | |
| 173 | |
| 174 const intx min_intx = (intx)1 << (sizeof(intx)*BitsPerByte-1); | |
| 175 const intx max_intx = (uintx)min_intx - 1; | |
| 176 const uintx max_uintx = (uintx)-1; | |
| 177 | |
| 178 // Table of values: | |
| 179 // sizeof intx 4 8 | |
| 180 // min_intx 0x80000000 0x8000000000000000 | |
| 181 // max_intx 0x7FFFFFFF 0x7FFFFFFFFFFFFFFF | |
| 182 // max_uintx 0xFFFFFFFF 0xFFFFFFFFFFFFFFFF | |
| 183 | |
| 184 typedef unsigned int uint; NEEDS_CLEANUP | |
| 185 | |
| 186 | |
| 187 //---------------------------------------------------------------------------------------------------- | |
| 188 // Java type definitions | |
| 189 | |
| 190 // All kinds of 'plain' byte addresses | |
| 191 typedef signed char s_char; | |
| 192 typedef unsigned char u_char; | |
| 193 typedef u_char* address; | |
| 194 typedef uintptr_t address_word; // unsigned integer which will hold a pointer | |
| 195 // except for some implementations of a C++ | |
| 196 // linkage pointer to function. Should never | |
| 197 // need one of those to be placed in this | |
| 198 // type anyway. | |
| 199 | |
| 200 // Utility functions to "portably" (?) bit twiddle pointers | |
| 201 // Where portable means keep ANSI C++ compilers quiet | |
| 202 | |
| 203 inline address set_address_bits(address x, int m) { return address(intptr_t(x) | m); } | |
| 204 inline address clear_address_bits(address x, int m) { return address(intptr_t(x) & ~m); } | |
| 205 | |
| 206 // Utility functions to "portably" make cast to/from function pointers. | |
| 207 | |
| 208 inline address_word mask_address_bits(address x, int m) { return address_word(x) & m; } | |
| 209 inline address_word castable_address(address x) { return address_word(x) ; } | |
| 210 inline address_word castable_address(void* x) { return address_word(x) ; } | |
| 211 | |
| 212 // Pointer subtraction. | |
| 213 // The idea here is to avoid ptrdiff_t, which is signed and so doesn't have | |
| 214 // the range we might need to find differences from one end of the heap | |
| 215 // to the other. | |
| 216 // A typical use might be: | |
| 217 // if (pointer_delta(end(), top()) >= size) { | |
| 218 // // enough room for an object of size | |
| 219 // ... | |
| 220 // and then additions like | |
| 221 // ... top() + size ... | |
| 222 // are safe because we know that top() is at least size below end(). | |
| 223 inline size_t pointer_delta(const void* left, | |
| 224 const void* right, | |
| 225 size_t element_size) { | |
| 226 return (((uintptr_t) left) - ((uintptr_t) right)) / element_size; | |
| 227 } | |
| 228 // A version specialized for HeapWord*'s. | |
| 229 inline size_t pointer_delta(const HeapWord* left, const HeapWord* right) { | |
| 230 return pointer_delta(left, right, sizeof(HeapWord)); | |
| 231 } | |
| 232 | |
| 233 // | |
| 234 // ANSI C++ does not allow casting from one pointer type to a function pointer | |
| 235 // directly without at best a warning. This macro accomplishes it silently | |
| 236 // In every case that is present at this point the value be cast is a pointer | |
| 237 // to a C linkage function. In somecase the type used for the cast reflects | |
| 238 // that linkage and a picky compiler would not complain. In other cases because | |
| 239 // there is no convenient place to place a typedef with extern C linkage (i.e | |
| 240 // a platform dependent header file) it doesn't. At this point no compiler seems | |
| 241 // picky enough to catch these instances (which are few). It is possible that | |
| 242 // using templates could fix these for all cases. This use of templates is likely | |
| 243 // so far from the middle of the road that it is likely to be problematic in | |
| 244 // many C++ compilers. | |
| 245 // | |
| 246 #define CAST_TO_FN_PTR(func_type, value) ((func_type)(castable_address(value))) | |
| 247 #define CAST_FROM_FN_PTR(new_type, func_ptr) ((new_type)((address_word)(func_ptr))) | |
| 248 | |
| 249 // Unsigned byte types for os and stream.hpp | |
| 250 | |
| 251 // Unsigned one, two, four and eigth byte quantities used for describing | |
| 252 // the .class file format. See JVM book chapter 4. | |
| 253 | |
| 254 typedef jubyte u1; | |
| 255 typedef jushort u2; | |
| 256 typedef juint u4; | |
| 257 typedef julong u8; | |
| 258 | |
| 259 const jubyte max_jubyte = (jubyte)-1; // 0xFF largest jubyte | |
| 260 const jushort max_jushort = (jushort)-1; // 0xFFFF largest jushort | |
| 261 const juint max_juint = (juint)-1; // 0xFFFFFFFF largest juint | |
| 262 const julong max_julong = (julong)-1; // 0xFF....FF largest julong | |
| 263 | |
| 264 //---------------------------------------------------------------------------------------------------- | |
| 265 // JVM spec restrictions | |
| 266 | |
| 267 const int max_method_code_size = 64*K - 1; // JVM spec, 2nd ed. section 4.8.1 (p.134) | |
| 268 | |
| 269 | |
| 270 //---------------------------------------------------------------------------------------------------- | |
| 271 // HotSwap - for JVMTI aka Class File Replacement and PopFrame | |
| 272 // | |
| 273 // Determines whether on-the-fly class replacement and frame popping are enabled. | |
| 274 | |
| 275 #define HOTSWAP | |
| 276 | |
| 277 //---------------------------------------------------------------------------------------------------- | |
| 278 // Object alignment, in units of HeapWords. | |
| 279 // | |
| 280 // Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and | |
| 281 // reference fields can be naturally aligned. | |
| 282 | |
| 283 const int MinObjAlignment = HeapWordsPerLong; | |
| 284 const int MinObjAlignmentInBytes = MinObjAlignment * HeapWordSize; | |
| 285 const int MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; | |
| 286 | |
| 287 // Machine dependent stuff | |
| 288 | |
| 289 #include "incls/_globalDefinitions_pd.hpp.incl" | |
| 290 | |
| 291 // The byte alignment to be used by Arena::Amalloc. See bugid 4169348. | |
| 292 // Note: this value must be a power of 2 | |
| 293 | |
| 294 #define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord) | |
| 295 | |
| 296 // Signed variants of alignment helpers. There are two versions of each, a macro | |
| 297 // for use in places like enum definitions that require compile-time constant | |
| 298 // expressions and a function for all other places so as to get type checking. | |
| 299 | |
| 300 #define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1)) | |
| 301 | |
| 302 inline intptr_t align_size_up(intptr_t size, intptr_t alignment) { | |
| 303 return align_size_up_(size, alignment); | |
| 304 } | |
| 305 | |
| 306 #define align_size_down_(size, alignment) ((size) & ~((alignment) - 1)) | |
| 307 | |
| 308 inline intptr_t align_size_down(intptr_t size, intptr_t alignment) { | |
| 309 return align_size_down_(size, alignment); | |
| 310 } | |
| 311 | |
| 312 // Align objects by rounding up their size, in HeapWord units. | |
| 313 | |
| 314 #define align_object_size_(size) align_size_up_(size, MinObjAlignment) | |
| 315 | |
| 316 inline intptr_t align_object_size(intptr_t size) { | |
| 317 return align_size_up(size, MinObjAlignment); | |
| 318 } | |
| 319 | |
| 320 // Pad out certain offsets to jlong alignment, in HeapWord units. | |
| 321 | |
| 322 #define align_object_offset_(offset) align_size_up_(offset, HeapWordsPerLong) | |
| 323 | |
| 324 inline intptr_t align_object_offset(intptr_t offset) { | |
| 325 return align_size_up(offset, HeapWordsPerLong); | |
| 326 } | |
| 327 | |
| 328 inline bool is_object_aligned(intptr_t offset) { | |
| 329 return offset == align_object_offset(offset); | |
| 330 } | |
| 331 | |
| 332 | |
| 333 //---------------------------------------------------------------------------------------------------- | |
| 334 // Utility macros for compilers | |
| 335 // used to silence compiler warnings | |
| 336 | |
| 337 #define Unused_Variable(var) var | |
| 338 | |
| 339 | |
| 340 //---------------------------------------------------------------------------------------------------- | |
| 341 // Miscellaneous | |
| 342 | |
| 343 // 6302670 Eliminate Hotspot __fabsf dependency | |
| 344 // All fabs() callers should call this function instead, which will implicitly | |
| 345 // convert the operand to double, avoiding a dependency on __fabsf which | |
| 346 // doesn't exist in early versions of Solaris 8. | |
| 347 inline double fabsd(double value) { | |
| 348 return fabs(value); | |
| 349 } | |
| 350 | |
| 351 inline jint low (jlong value) { return jint(value); } | |
| 352 inline jint high(jlong value) { return jint(value >> 32); } | |
| 353 | |
| 354 // the fancy casts are a hopefully portable way | |
| 355 // to do unsigned 32 to 64 bit type conversion | |
| 356 inline void set_low (jlong* value, jint low ) { *value &= (jlong)0xffffffff << 32; | |
| 357 *value |= (jlong)(julong)(juint)low; } | |
| 358 | |
| 359 inline void set_high(jlong* value, jint high) { *value &= (jlong)(julong)(juint)0xffffffff; | |
| 360 *value |= (jlong)high << 32; } | |
| 361 | |
| 362 inline jlong jlong_from(jint h, jint l) { | |
| 363 jlong result = 0; // initialization to avoid warning | |
| 364 set_high(&result, h); | |
| 365 set_low(&result, l); | |
| 366 return result; | |
| 367 } | |
| 368 | |
| 369 union jlong_accessor { | |
| 370 jint words[2]; | |
| 371 jlong long_value; | |
| 372 }; | |
| 373 | |
| 374 void check_basic_types(); // cannot define here; uses assert | |
| 375 | |
| 376 | |
| 377 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
| 378 enum BasicType { | |
| 379 T_BOOLEAN = 4, | |
| 380 T_CHAR = 5, | |
| 381 T_FLOAT = 6, | |
| 382 T_DOUBLE = 7, | |
| 383 T_BYTE = 8, | |
| 384 T_SHORT = 9, | |
| 385 T_INT = 10, | |
| 386 T_LONG = 11, | |
| 387 T_OBJECT = 12, | |
| 388 T_ARRAY = 13, | |
| 389 T_VOID = 14, | |
| 390 T_ADDRESS = 15, | |
| 391 T_CONFLICT = 16, // for stack value type with conflicting contents | |
| 392 T_ILLEGAL = 99 | |
| 393 }; | |
| 394 | |
|
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395 inline bool is_java_primitive(BasicType t) { |
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396 return T_BOOLEAN <= t && t <= T_LONG; |
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397 } |
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398 |
| 0 | 399 // Convert a char from a classfile signature to a BasicType |
| 400 inline BasicType char2type(char c) { | |
| 401 switch( c ) { | |
| 402 case 'B': return T_BYTE; | |
| 403 case 'C': return T_CHAR; | |
| 404 case 'D': return T_DOUBLE; | |
| 405 case 'F': return T_FLOAT; | |
| 406 case 'I': return T_INT; | |
| 407 case 'J': return T_LONG; | |
| 408 case 'S': return T_SHORT; | |
| 409 case 'Z': return T_BOOLEAN; | |
| 410 case 'V': return T_VOID; | |
| 411 case 'L': return T_OBJECT; | |
| 412 case '[': return T_ARRAY; | |
| 413 } | |
| 414 return T_ILLEGAL; | |
| 415 } | |
| 416 | |
| 417 extern char type2char_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
| 418 inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; } | |
| 419 extern int type2size[T_CONFLICT+1]; // Map BasicType to result stack elements | |
| 420 extern const char* type2name_tab[T_CONFLICT+1]; // Map a BasicType to a jchar | |
| 421 inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; } | |
| 422 extern BasicType name2type(const char* name); | |
| 423 | |
| 424 // Auxilary math routines | |
| 425 // least common multiple | |
| 426 extern size_t lcm(size_t a, size_t b); | |
| 427 | |
| 428 | |
| 429 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java | |
| 430 enum BasicTypeSize { | |
| 431 T_BOOLEAN_size = 1, | |
| 432 T_CHAR_size = 1, | |
| 433 T_FLOAT_size = 1, | |
| 434 T_DOUBLE_size = 2, | |
| 435 T_BYTE_size = 1, | |
| 436 T_SHORT_size = 1, | |
| 437 T_INT_size = 1, | |
| 438 T_LONG_size = 2, | |
| 439 T_OBJECT_size = 1, | |
| 440 T_ARRAY_size = 1, | |
| 441 T_VOID_size = 0 | |
| 442 }; | |
| 443 | |
| 444 | |
| 445 // maps a BasicType to its instance field storage type: | |
| 446 // all sub-word integral types are widened to T_INT | |
| 447 extern BasicType type2field[T_CONFLICT+1]; | |
| 448 extern BasicType type2wfield[T_CONFLICT+1]; | |
| 449 | |
| 450 | |
| 451 // size in bytes | |
| 452 enum ArrayElementSize { | |
| 453 T_BOOLEAN_aelem_bytes = 1, | |
| 454 T_CHAR_aelem_bytes = 2, | |
| 455 T_FLOAT_aelem_bytes = 4, | |
| 456 T_DOUBLE_aelem_bytes = 8, | |
| 457 T_BYTE_aelem_bytes = 1, | |
| 458 T_SHORT_aelem_bytes = 2, | |
| 459 T_INT_aelem_bytes = 4, | |
| 460 T_LONG_aelem_bytes = 8, | |
| 461 #ifdef _LP64 | |
| 462 T_OBJECT_aelem_bytes = 8, | |
| 463 T_ARRAY_aelem_bytes = 8, | |
| 464 #else | |
| 465 T_OBJECT_aelem_bytes = 4, | |
| 466 T_ARRAY_aelem_bytes = 4, | |
| 467 #endif | |
| 468 T_VOID_aelem_bytes = 0 | |
| 469 }; | |
| 470 | |
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471 extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element |
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472 #ifdef ASSERT |
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473 extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts |
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474 #else |
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475 inline int type2aelembytes(BasicType t) { return _type2aelembytes[t]; } |
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476 #endif |
| 0 | 477 |
| 478 | |
| 479 // JavaValue serves as a container for arbitrary Java values. | |
| 480 | |
| 481 class JavaValue { | |
| 482 | |
| 483 public: | |
| 484 typedef union JavaCallValue { | |
| 485 jfloat f; | |
| 486 jdouble d; | |
| 487 jint i; | |
| 488 jlong l; | |
| 489 jobject h; | |
| 490 } JavaCallValue; | |
| 491 | |
| 492 private: | |
| 493 BasicType _type; | |
| 494 JavaCallValue _value; | |
| 495 | |
| 496 public: | |
| 497 JavaValue(BasicType t = T_ILLEGAL) { _type = t; } | |
| 498 | |
| 499 JavaValue(jfloat value) { | |
| 500 _type = T_FLOAT; | |
| 501 _value.f = value; | |
| 502 } | |
| 503 | |
| 504 JavaValue(jdouble value) { | |
| 505 _type = T_DOUBLE; | |
| 506 _value.d = value; | |
| 507 } | |
| 508 | |
| 509 jfloat get_jfloat() const { return _value.f; } | |
| 510 jdouble get_jdouble() const { return _value.d; } | |
| 511 jint get_jint() const { return _value.i; } | |
| 512 jlong get_jlong() const { return _value.l; } | |
| 513 jobject get_jobject() const { return _value.h; } | |
| 514 JavaCallValue* get_value_addr() { return &_value; } | |
| 515 BasicType get_type() const { return _type; } | |
| 516 | |
| 517 void set_jfloat(jfloat f) { _value.f = f;} | |
| 518 void set_jdouble(jdouble d) { _value.d = d;} | |
| 519 void set_jint(jint i) { _value.i = i;} | |
| 520 void set_jlong(jlong l) { _value.l = l;} | |
| 521 void set_jobject(jobject h) { _value.h = h;} | |
| 522 void set_type(BasicType t) { _type = t; } | |
| 523 | |
| 524 jboolean get_jboolean() const { return (jboolean) (_value.i);} | |
| 525 jbyte get_jbyte() const { return (jbyte) (_value.i);} | |
| 526 jchar get_jchar() const { return (jchar) (_value.i);} | |
| 527 jshort get_jshort() const { return (jshort) (_value.i);} | |
| 528 | |
| 529 }; | |
| 530 | |
| 531 | |
| 532 #define STACK_BIAS 0 | |
| 533 // V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff | |
| 534 // in order to extend the reach of the stack pointer. | |
| 535 #if defined(SPARC) && defined(_LP64) | |
| 536 #undef STACK_BIAS | |
| 537 #define STACK_BIAS 0x7ff | |
| 538 #endif | |
| 539 | |
| 540 | |
| 541 // TosState describes the top-of-stack state before and after the execution of | |
| 542 // a bytecode or method. The top-of-stack value may be cached in one or more CPU | |
| 543 // registers. The TosState corresponds to the 'machine represention' of this cached | |
| 544 // value. There's 4 states corresponding to the JAVA types int, long, float & double | |
| 545 // as well as a 5th state in case the top-of-stack value is actually on the top | |
| 546 // of stack (in memory) and thus not cached. The atos state corresponds to the itos | |
| 547 // state when it comes to machine representation but is used separately for (oop) | |
| 548 // type specific operations (e.g. verification code). | |
| 549 | |
| 550 enum TosState { // describes the tos cache contents | |
| 551 btos = 0, // byte, bool tos cached | |
| 552 ctos = 1, // short, char tos cached | |
| 553 stos = 2, // short, char tos cached | |
| 554 itos = 3, // int tos cached | |
| 555 ltos = 4, // long tos cached | |
| 556 ftos = 5, // float tos cached | |
| 557 dtos = 6, // double tos cached | |
| 558 atos = 7, // object cached | |
| 559 vtos = 8, // tos not cached | |
| 560 number_of_states, | |
| 561 ilgl // illegal state: should not occur | |
| 562 }; | |
| 563 | |
| 564 | |
| 565 inline TosState as_TosState(BasicType type) { | |
| 566 switch (type) { | |
| 567 case T_BYTE : return btos; | |
| 568 case T_BOOLEAN: return btos; | |
| 569 case T_CHAR : return ctos; | |
| 570 case T_SHORT : return stos; | |
| 571 case T_INT : return itos; | |
| 572 case T_LONG : return ltos; | |
| 573 case T_FLOAT : return ftos; | |
| 574 case T_DOUBLE : return dtos; | |
| 575 case T_VOID : return vtos; | |
| 576 case T_ARRAY : // fall through | |
| 577 case T_OBJECT : return atos; | |
| 578 } | |
| 579 return ilgl; | |
| 580 } | |
| 581 | |
| 582 | |
| 583 // Helper function to convert BasicType info into TosState | |
| 584 // Note: Cannot define here as it uses global constant at the time being. | |
| 585 TosState as_TosState(BasicType type); | |
| 586 | |
| 587 | |
| 588 // ReferenceType is used to distinguish between java/lang/ref/Reference subclasses | |
| 589 | |
| 590 enum ReferenceType { | |
| 591 REF_NONE, // Regular class | |
| 592 REF_OTHER, // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below | |
| 593 REF_SOFT, // Subclass of java/lang/ref/SoftReference | |
| 594 REF_WEAK, // Subclass of java/lang/ref/WeakReference | |
| 595 REF_FINAL, // Subclass of java/lang/ref/FinalReference | |
| 596 REF_PHANTOM // Subclass of java/lang/ref/PhantomReference | |
| 597 }; | |
| 598 | |
| 599 | |
| 600 // JavaThreadState keeps track of which part of the code a thread is executing in. This | |
| 601 // information is needed by the safepoint code. | |
| 602 // | |
| 603 // There are 4 essential states: | |
| 604 // | |
| 605 // _thread_new : Just started, but not executed init. code yet (most likely still in OS init code) | |
| 606 // _thread_in_native : In native code. This is a safepoint region, since all oops will be in jobject handles | |
| 607 // _thread_in_vm : Executing in the vm | |
| 608 // _thread_in_Java : Executing either interpreted or compiled Java code (or could be in a stub) | |
| 609 // | |
| 610 // Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in | |
| 611 // a transition from one state to another. These extra states makes it possible for the safepoint code to | |
| 612 // handle certain thread_states without having to suspend the thread - making the safepoint code faster. | |
| 613 // | |
| 614 // Given a state, the xxx_trans state can always be found by adding 1. | |
| 615 // | |
| 616 enum JavaThreadState { | |
| 617 _thread_uninitialized = 0, // should never happen (missing initialization) | |
| 618 _thread_new = 2, // just starting up, i.e., in process of being initialized | |
| 619 _thread_new_trans = 3, // corresponding transition state (not used, included for completness) | |
| 620 _thread_in_native = 4, // running in native code | |
| 621 _thread_in_native_trans = 5, // corresponding transition state | |
| 622 _thread_in_vm = 6, // running in VM | |
| 623 _thread_in_vm_trans = 7, // corresponding transition state | |
| 624 _thread_in_Java = 8, // running in Java or in stub code | |
| 625 _thread_in_Java_trans = 9, // corresponding transition state (not used, included for completness) | |
| 626 _thread_blocked = 10, // blocked in vm | |
| 627 _thread_blocked_trans = 11, // corresponding transition state | |
| 628 _thread_max_state = 12 // maximum thread state+1 - used for statistics allocation | |
| 629 }; | |
| 630 | |
| 631 | |
| 632 // Handy constants for deciding which compiler mode to use. | |
| 633 enum MethodCompilation { | |
| 634 InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation | |
| 635 InvalidOSREntryBci = -2 | |
| 636 }; | |
| 637 | |
| 638 // Enumeration to distinguish tiers of compilation | |
| 639 enum CompLevel { | |
| 640 CompLevel_none = 0, | |
| 641 CompLevel_fast_compile = 1, | |
| 642 CompLevel_full_optimization = 2, | |
| 643 | |
| 644 CompLevel_highest_tier = CompLevel_full_optimization, | |
| 645 #ifdef TIERED | |
| 646 CompLevel_initial_compile = CompLevel_fast_compile | |
| 647 #else | |
| 648 CompLevel_initial_compile = CompLevel_full_optimization | |
| 649 #endif // TIERED | |
| 650 }; | |
| 651 | |
| 652 inline bool is_tier1_compile(int comp_level) { | |
| 653 return comp_level == CompLevel_fast_compile; | |
| 654 } | |
| 655 inline bool is_tier2_compile(int comp_level) { | |
| 656 return comp_level == CompLevel_full_optimization; | |
| 657 } | |
| 658 inline bool is_highest_tier_compile(int comp_level) { | |
| 659 return comp_level == CompLevel_highest_tier; | |
| 660 } | |
| 661 | |
| 662 //---------------------------------------------------------------------------------------------------- | |
| 663 // 'Forward' declarations of frequently used classes | |
| 664 // (in order to reduce interface dependencies & reduce | |
| 665 // number of unnecessary compilations after changes) | |
| 666 | |
| 667 class symbolTable; | |
| 668 class ClassFileStream; | |
| 669 | |
| 670 class Event; | |
| 671 | |
| 672 class Thread; | |
| 673 class VMThread; | |
| 674 class JavaThread; | |
| 675 class Threads; | |
| 676 | |
| 677 class VM_Operation; | |
| 678 class VMOperationQueue; | |
| 679 | |
| 680 class CodeBlob; | |
| 681 class nmethod; | |
| 682 class OSRAdapter; | |
| 683 class I2CAdapter; | |
| 684 class C2IAdapter; | |
| 685 class CompiledIC; | |
| 686 class relocInfo; | |
| 687 class ScopeDesc; | |
| 688 class PcDesc; | |
| 689 | |
| 690 class Recompiler; | |
| 691 class Recompilee; | |
| 692 class RecompilationPolicy; | |
| 693 class RFrame; | |
| 694 class CompiledRFrame; | |
| 695 class InterpretedRFrame; | |
| 696 | |
| 697 class frame; | |
| 698 | |
| 699 class vframe; | |
| 700 class javaVFrame; | |
| 701 class interpretedVFrame; | |
| 702 class compiledVFrame; | |
| 703 class deoptimizedVFrame; | |
| 704 class externalVFrame; | |
| 705 class entryVFrame; | |
| 706 | |
| 707 class RegisterMap; | |
| 708 | |
| 709 class Mutex; | |
| 710 class Monitor; | |
| 711 class BasicLock; | |
| 712 class BasicObjectLock; | |
| 713 | |
| 714 class PeriodicTask; | |
| 715 | |
| 716 class JavaCallWrapper; | |
| 717 | |
| 718 class oopDesc; | |
| 719 | |
| 720 class NativeCall; | |
| 721 | |
| 722 class zone; | |
| 723 | |
| 724 class StubQueue; | |
| 725 | |
| 726 class outputStream; | |
| 727 | |
| 728 class ResourceArea; | |
| 729 | |
| 730 class DebugInformationRecorder; | |
| 731 class ScopeValue; | |
| 732 class CompressedStream; | |
| 733 class DebugInfoReadStream; | |
| 734 class DebugInfoWriteStream; | |
| 735 class LocationValue; | |
| 736 class ConstantValue; | |
| 737 class IllegalValue; | |
| 738 | |
| 739 class PrivilegedElement; | |
| 740 class MonitorArray; | |
| 741 | |
| 742 class MonitorInfo; | |
| 743 | |
| 744 class OffsetClosure; | |
| 745 class OopMapCache; | |
| 746 class InterpreterOopMap; | |
| 747 class OopMapCacheEntry; | |
| 748 class OSThread; | |
| 749 | |
| 750 typedef int (*OSThreadStartFunc)(void*); | |
| 751 | |
| 752 class Space; | |
| 753 | |
| 754 class JavaValue; | |
| 755 class methodHandle; | |
| 756 class JavaCallArguments; | |
| 757 | |
| 758 // Basic support for errors (general debug facilities not defined at this point fo the include phase) | |
| 759 | |
| 760 extern void basic_fatal(const char* msg); | |
| 761 | |
| 762 | |
| 763 //---------------------------------------------------------------------------------------------------- | |
| 764 // Special constants for debugging | |
| 765 | |
| 766 const jint badInt = -3; // generic "bad int" value | |
| 767 const long badAddressVal = -2; // generic "bad address" value | |
| 768 const long badOopVal = -1; // generic "bad oop" value | |
| 769 const intptr_t badHeapOopVal = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC | |
| 770 const int badHandleValue = 0xBC; // value used to zap vm handle area | |
| 771 const int badResourceValue = 0xAB; // value used to zap resource area | |
| 772 const int freeBlockPad = 0xBA; // value used to pad freed blocks. | |
| 773 const int uninitBlockPad = 0xF1; // value used to zap newly malloc'd blocks. | |
| 774 const intptr_t badJNIHandleVal = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area | |
| 775 const juint badHeapWordVal = 0xBAADBABE; // value used to zap heap after GC | |
| 776 const int badCodeHeapNewVal= 0xCC; // value used to zap Code heap at allocation | |
| 777 const int badCodeHeapFreeVal = 0xDD; // value used to zap Code heap at deallocation | |
| 778 | |
| 779 | |
| 780 // (These must be implemented as #defines because C++ compilers are | |
| 781 // not obligated to inline non-integral constants!) | |
| 782 #define badAddress ((address)::badAddressVal) | |
| 783 #define badOop ((oop)::badOopVal) | |
| 784 #define badHeapWord (::badHeapWordVal) | |
| 785 #define badJNIHandle ((oop)::badJNIHandleVal) | |
| 786 | |
| 787 | |
| 788 //---------------------------------------------------------------------------------------------------- | |
| 789 // Utility functions for bitfield manipulations | |
| 790 | |
| 791 const intptr_t AllBits = ~0; // all bits set in a word | |
| 792 const intptr_t NoBits = 0; // no bits set in a word | |
| 793 const jlong NoLongBits = 0; // no bits set in a long | |
| 794 const intptr_t OneBit = 1; // only right_most bit set in a word | |
| 795 | |
| 796 // get a word with the n.th or the right-most or left-most n bits set | |
| 797 // (note: #define used only so that they can be used in enum constant definitions) | |
| 798 #define nth_bit(n) (n >= BitsPerWord ? 0 : OneBit << (n)) | |
| 799 #define right_n_bits(n) (nth_bit(n) - 1) | |
| 800 #define left_n_bits(n) (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n))) | |
| 801 | |
| 802 // bit-operations using a mask m | |
| 803 inline void set_bits (intptr_t& x, intptr_t m) { x |= m; } | |
| 804 inline void clear_bits (intptr_t& x, intptr_t m) { x &= ~m; } | |
| 805 inline intptr_t mask_bits (intptr_t x, intptr_t m) { return x & m; } | |
| 806 inline jlong mask_long_bits (jlong x, jlong m) { return x & m; } | |
| 807 inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; } | |
| 808 | |
| 809 // bit-operations using the n.th bit | |
| 810 inline void set_nth_bit(intptr_t& x, int n) { set_bits (x, nth_bit(n)); } | |
| 811 inline void clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); } | |
| 812 inline bool is_set_nth_bit(intptr_t x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; } | |
| 813 | |
| 814 // returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!) | |
| 815 inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) { | |
| 816 return mask_bits(x >> start_bit_no, right_n_bits(field_length)); | |
| 817 } | |
| 818 | |
| 819 | |
| 820 //---------------------------------------------------------------------------------------------------- | |
| 821 // Utility functions for integers | |
| 822 | |
| 823 // Avoid use of global min/max macros which may cause unwanted double | |
| 824 // evaluation of arguments. | |
| 825 #ifdef max | |
| 826 #undef max | |
| 827 #endif | |
| 828 | |
| 829 #ifdef min | |
| 830 #undef min | |
| 831 #endif | |
| 832 | |
| 833 #define max(a,b) Do_not_use_max_use_MAX2_instead | |
| 834 #define min(a,b) Do_not_use_min_use_MIN2_instead | |
| 835 | |
| 836 // It is necessary to use templates here. Having normal overloaded | |
| 837 // functions does not work because it is necessary to provide both 32- | |
| 838 // and 64-bit overloaded functions, which does not work, and having | |
| 839 // explicitly-typed versions of these routines (i.e., MAX2I, MAX2L) | |
| 840 // will be even more error-prone than macros. | |
| 841 template<class T> inline T MAX2(T a, T b) { return (a > b) ? a : b; } | |
| 842 template<class T> inline T MIN2(T a, T b) { return (a < b) ? a : b; } | |
| 843 template<class T> inline T MAX3(T a, T b, T c) { return MAX2(MAX2(a, b), c); } | |
| 844 template<class T> inline T MIN3(T a, T b, T c) { return MIN2(MIN2(a, b), c); } | |
| 845 template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); } | |
| 846 template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); } | |
| 847 | |
| 848 template<class T> inline T ABS(T x) { return (x > 0) ? x : -x; } | |
| 849 | |
| 850 // true if x is a power of 2, false otherwise | |
| 851 inline bool is_power_of_2(intptr_t x) { | |
| 852 return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits)); | |
| 853 } | |
| 854 | |
| 855 // long version of is_power_of_2 | |
| 856 inline bool is_power_of_2_long(jlong x) { | |
| 857 return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits)); | |
| 858 } | |
| 859 | |
| 860 //* largest i such that 2^i <= x | |
| 861 // A negative value of 'x' will return '31' | |
| 862 inline int log2_intptr(intptr_t x) { | |
| 863 int i = -1; | |
| 864 uintptr_t p = 1; | |
| 865 while (p != 0 && p <= (uintptr_t)x) { | |
| 866 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
| 867 i++; p *= 2; | |
| 868 } | |
| 869 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
| 870 // (if p = 0 then overflow occured and i = 31) | |
| 871 return i; | |
| 872 } | |
| 873 | |
| 874 //* largest i such that 2^i <= x | |
| 875 // A negative value of 'x' will return '63' | |
| 876 inline int log2_long(jlong x) { | |
| 877 int i = -1; | |
| 878 julong p = 1; | |
| 879 while (p != 0 && p <= (julong)x) { | |
| 880 // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x) | |
| 881 i++; p *= 2; | |
| 882 } | |
| 883 // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1)) | |
| 884 // (if p = 0 then overflow occured and i = 31) | |
| 885 return i; | |
| 886 } | |
| 887 | |
| 888 //* the argument must be exactly a power of 2 | |
| 889 inline int exact_log2(intptr_t x) { | |
| 890 #ifdef ASSERT | |
| 891 if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); | |
| 892 #endif | |
| 893 return log2_intptr(x); | |
| 894 } | |
| 895 | |
| 896 | |
| 897 // returns integer round-up to the nearest multiple of s (s must be a power of two) | |
| 898 inline intptr_t round_to(intptr_t x, uintx s) { | |
| 899 #ifdef ASSERT | |
| 900 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
| 901 #endif | |
| 902 const uintx m = s - 1; | |
| 903 return mask_bits(x + m, ~m); | |
| 904 } | |
| 905 | |
| 906 // returns integer round-down to the nearest multiple of s (s must be a power of two) | |
| 907 inline intptr_t round_down(intptr_t x, uintx s) { | |
| 908 #ifdef ASSERT | |
| 909 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); | |
| 910 #endif | |
| 911 const uintx m = s - 1; | |
| 912 return mask_bits(x, ~m); | |
| 913 } | |
| 914 | |
| 915 | |
| 916 inline bool is_odd (intx x) { return x & 1; } | |
| 917 inline bool is_even(intx x) { return !is_odd(x); } | |
| 918 | |
| 919 // "to" should be greater than "from." | |
| 920 inline intx byte_size(void* from, void* to) { | |
| 921 return (address)to - (address)from; | |
| 922 } | |
| 923 | |
| 924 //---------------------------------------------------------------------------------------------------- | |
| 925 // Avoid non-portable casts with these routines (DEPRECATED) | |
| 926 | |
| 927 // NOTE: USE Bytes class INSTEAD WHERE POSSIBLE | |
| 928 // Bytes is optimized machine-specifically and may be much faster then the portable routines below. | |
| 929 | |
| 930 // Given sequence of four bytes, build into a 32-bit word | |
| 931 // following the conventions used in class files. | |
| 932 // On the 386, this could be realized with a simple address cast. | |
| 933 // | |
| 934 | |
| 935 // This routine takes eight bytes: | |
| 936 inline u8 build_u8_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
| 937 return ( u8(c1) << 56 ) & ( u8(0xff) << 56 ) | |
| 938 | ( u8(c2) << 48 ) & ( u8(0xff) << 48 ) | |
| 939 | ( u8(c3) << 40 ) & ( u8(0xff) << 40 ) | |
| 940 | ( u8(c4) << 32 ) & ( u8(0xff) << 32 ) | |
| 941 | ( u8(c5) << 24 ) & ( u8(0xff) << 24 ) | |
| 942 | ( u8(c6) << 16 ) & ( u8(0xff) << 16 ) | |
| 943 | ( u8(c7) << 8 ) & ( u8(0xff) << 8 ) | |
| 944 | ( u8(c8) << 0 ) & ( u8(0xff) << 0 ); | |
| 945 } | |
| 946 | |
| 947 // This routine takes four bytes: | |
| 948 inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
| 949 return ( u4(c1) << 24 ) & 0xff000000 | |
| 950 | ( u4(c2) << 16 ) & 0x00ff0000 | |
| 951 | ( u4(c3) << 8 ) & 0x0000ff00 | |
| 952 | ( u4(c4) << 0 ) & 0x000000ff; | |
| 953 } | |
| 954 | |
| 955 // And this one works if the four bytes are contiguous in memory: | |
| 956 inline u4 build_u4_from( u1* p ) { | |
| 957 return build_u4_from( p[0], p[1], p[2], p[3] ); | |
| 958 } | |
| 959 | |
| 960 // Ditto for two-byte ints: | |
| 961 inline u2 build_u2_from( u1 c1, u1 c2 ) { | |
| 962 return u2(( u2(c1) << 8 ) & 0xff00 | |
| 963 | ( u2(c2) << 0 ) & 0x00ff); | |
| 964 } | |
| 965 | |
| 966 // And this one works if the two bytes are contiguous in memory: | |
| 967 inline u2 build_u2_from( u1* p ) { | |
| 968 return build_u2_from( p[0], p[1] ); | |
| 969 } | |
| 970 | |
| 971 // Ditto for floats: | |
| 972 inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) { | |
| 973 u4 u = build_u4_from( c1, c2, c3, c4 ); | |
| 974 return *(jfloat*)&u; | |
| 975 } | |
| 976 | |
| 977 inline jfloat build_float_from( u1* p ) { | |
| 978 u4 u = build_u4_from( p ); | |
| 979 return *(jfloat*)&u; | |
| 980 } | |
| 981 | |
| 982 | |
| 983 // now (64-bit) longs | |
| 984 | |
| 985 inline jlong build_long_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
| 986 return ( jlong(c1) << 56 ) & ( jlong(0xff) << 56 ) | |
| 987 | ( jlong(c2) << 48 ) & ( jlong(0xff) << 48 ) | |
| 988 | ( jlong(c3) << 40 ) & ( jlong(0xff) << 40 ) | |
| 989 | ( jlong(c4) << 32 ) & ( jlong(0xff) << 32 ) | |
| 990 | ( jlong(c5) << 24 ) & ( jlong(0xff) << 24 ) | |
| 991 | ( jlong(c6) << 16 ) & ( jlong(0xff) << 16 ) | |
| 992 | ( jlong(c7) << 8 ) & ( jlong(0xff) << 8 ) | |
| 993 | ( jlong(c8) << 0 ) & ( jlong(0xff) << 0 ); | |
| 994 } | |
| 995 | |
| 996 inline jlong build_long_from( u1* p ) { | |
| 997 return build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] ); | |
| 998 } | |
| 999 | |
| 1000 | |
| 1001 // Doubles, too! | |
| 1002 inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) { | |
| 1003 jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 ); | |
| 1004 return *(jdouble*)&u; | |
| 1005 } | |
| 1006 | |
| 1007 inline jdouble build_double_from( u1* p ) { | |
| 1008 jlong u = build_long_from( p ); | |
| 1009 return *(jdouble*)&u; | |
| 1010 } | |
| 1011 | |
| 1012 | |
| 1013 // Portable routines to go the other way: | |
| 1014 | |
| 1015 inline void explode_short_to( u2 x, u1& c1, u1& c2 ) { | |
| 1016 c1 = u1(x >> 8); | |
| 1017 c2 = u1(x); | |
| 1018 } | |
| 1019 | |
| 1020 inline void explode_short_to( u2 x, u1* p ) { | |
| 1021 explode_short_to( x, p[0], p[1]); | |
| 1022 } | |
| 1023 | |
| 1024 inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) { | |
| 1025 c1 = u1(x >> 24); | |
| 1026 c2 = u1(x >> 16); | |
| 1027 c3 = u1(x >> 8); | |
| 1028 c4 = u1(x); | |
| 1029 } | |
| 1030 | |
| 1031 inline void explode_int_to( u4 x, u1* p ) { | |
| 1032 explode_int_to( x, p[0], p[1], p[2], p[3]); | |
| 1033 } | |
| 1034 | |
| 1035 | |
| 1036 // Pack and extract shorts to/from ints: | |
| 1037 | |
| 1038 inline int extract_low_short_from_int(jint x) { | |
| 1039 return x & 0xffff; | |
| 1040 } | |
| 1041 | |
| 1042 inline int extract_high_short_from_int(jint x) { | |
| 1043 return (x >> 16) & 0xffff; | |
| 1044 } | |
| 1045 | |
| 1046 inline int build_int_from_shorts( jushort low, jushort high ) { | |
| 1047 return ((int)((unsigned int)high << 16) | (unsigned int)low); | |
| 1048 } | |
| 1049 | |
| 1050 // Printf-style formatters for fixed- and variable-width types as pointers and | |
| 1051 // integers. | |
| 1052 // | |
| 1053 // Each compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp) | |
| 1054 // must define the macro FORMAT64_MODIFIER, which is the modifier for '%x' or | |
| 1055 // '%d' formats to indicate a 64-bit quantity; commonly "l" (in LP64) or "ll" | |
| 1056 // (in ILP32). | |
| 1057 | |
| 1058 // Format 32-bit quantities. | |
| 1059 #define INT32_FORMAT "%d" | |
| 1060 #define UINT32_FORMAT "%u" | |
| 1061 #define INT32_FORMAT_W(width) "%" #width "d" | |
| 1062 #define UINT32_FORMAT_W(width) "%" #width "u" | |
| 1063 | |
| 1064 #define PTR32_FORMAT "0x%08x" | |
| 1065 | |
| 1066 // Format 64-bit quantities. | |
| 1067 #define INT64_FORMAT "%" FORMAT64_MODIFIER "d" | |
| 1068 #define UINT64_FORMAT "%" FORMAT64_MODIFIER "u" | |
| 1069 #define PTR64_FORMAT "0x%016" FORMAT64_MODIFIER "x" | |
| 1070 | |
| 1071 #define INT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "d" | |
| 1072 #define UINT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "u" | |
| 1073 | |
| 1074 // Format macros that allow the field width to be specified. The width must be | |
| 1075 // a string literal (e.g., "8") or a macro that evaluates to one. | |
| 1076 #ifdef _LP64 | |
| 1077 #define SSIZE_FORMAT_W(width) INT64_FORMAT_W(width) | |
| 1078 #define SIZE_FORMAT_W(width) UINT64_FORMAT_W(width) | |
| 1079 #else | |
| 1080 #define SSIZE_FORMAT_W(width) INT32_FORMAT_W(width) | |
| 1081 #define SIZE_FORMAT_W(width) UINT32_FORMAT_W(width) | |
| 1082 #endif // _LP64 | |
| 1083 | |
| 1084 // Format pointers and size_t (or size_t-like integer types) which change size | |
| 1085 // between 32- and 64-bit. | |
| 1086 #ifdef _LP64 | |
| 1087 #define PTR_FORMAT PTR64_FORMAT | |
| 1088 #define UINTX_FORMAT UINT64_FORMAT | |
| 1089 #define INTX_FORMAT INT64_FORMAT | |
| 1090 #define SIZE_FORMAT UINT64_FORMAT | |
| 1091 #define SSIZE_FORMAT INT64_FORMAT | |
| 1092 #else // !_LP64 | |
| 1093 #define PTR_FORMAT PTR32_FORMAT | |
| 1094 #define UINTX_FORMAT UINT32_FORMAT | |
| 1095 #define INTX_FORMAT INT32_FORMAT | |
| 1096 #define SIZE_FORMAT UINT32_FORMAT | |
| 1097 #define SSIZE_FORMAT INT32_FORMAT | |
| 1098 #endif // _LP64 | |
| 1099 | |
| 1100 #define INTPTR_FORMAT PTR_FORMAT | |
| 1101 | |
| 1102 // Enable zap-a-lot if in debug version. | |
| 1103 | |
| 1104 # ifdef ASSERT | |
| 1105 # ifdef COMPILER2 | |
| 1106 # define ENABLE_ZAP_DEAD_LOCALS | |
| 1107 #endif /* COMPILER2 */ | |
| 1108 # endif /* ASSERT */ | |
| 1109 | |
| 1110 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0])) |