hotspot/src/share/vm/utilities/globalDefinitions.hpp
author jmasa
Thu, 04 Sep 2008 14:49:08 -0700
changeset 1393 614996a6c018
parent 977 b90650e2a9f7
child 2023 10d955a8d972
child 1889 24b003a6fe46
permissions -rw-r--r--
6743059: Error in spaceDecorator.cpp "optimized" build. Summary: Changed the guard on the definition of the method value in HeapWord from ASSERT to not PRODUCT. Reviewed-by: iveresov, apetrusenko
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/*
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 * Copyright 1997-2008 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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// This file holds all globally used constants & types, class (forward)
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// declarations and a few frequently used utility functions.
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//----------------------------------------------------------------------------------------------------
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// Constants
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const int LogBytesPerShort   = 1;
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const int LogBytesPerInt     = 2;
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#ifdef _LP64
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const int LogBytesPerWord    = 3;
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#else
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const int LogBytesPerWord    = 2;
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#endif
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const int LogBytesPerLong    = 3;
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const int BytesPerShort      = 1 << LogBytesPerShort;
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const int BytesPerInt        = 1 << LogBytesPerInt;
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const int BytesPerWord       = 1 << LogBytesPerWord;
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const int BytesPerLong       = 1 << LogBytesPerLong;
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const int LogBitsPerByte     = 3;
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const int LogBitsPerShort    = LogBitsPerByte + LogBytesPerShort;
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const int LogBitsPerInt      = LogBitsPerByte + LogBytesPerInt;
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const int LogBitsPerWord     = LogBitsPerByte + LogBytesPerWord;
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const int LogBitsPerLong     = LogBitsPerByte + LogBytesPerLong;
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const int BitsPerByte        = 1 << LogBitsPerByte;
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const int BitsPerShort       = 1 << LogBitsPerShort;
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const int BitsPerInt         = 1 << LogBitsPerInt;
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const int BitsPerWord        = 1 << LogBitsPerWord;
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const int BitsPerLong        = 1 << LogBitsPerLong;
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const int WordAlignmentMask  = (1 << LogBytesPerWord) - 1;
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const int LongAlignmentMask  = (1 << LogBytesPerLong) - 1;
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const int WordsPerLong       = 2;       // Number of stack entries for longs
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const int oopSize            = sizeof(char*); // Full-width oop
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extern int heapOopSize;                       // Oop within a java object
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const int wordSize           = sizeof(char*);
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const int longSize           = sizeof(jlong);
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const int jintSize           = sizeof(jint);
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const int size_tSize         = sizeof(size_t);
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const int BytesPerOop        = BytesPerWord;  // Full-width oop
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extern int LogBytesPerHeapOop;                // Oop within a java object
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extern int LogBitsPerHeapOop;
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extern int BytesPerHeapOop;
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extern int BitsPerHeapOop;
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const int BitsPerJavaInteger = 32;
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const int BitsPerSize_t      = size_tSize * BitsPerByte;
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// Size of a char[] needed to represent a jint as a string in decimal.
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const int jintAsStringSize = 12;
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// In fact this should be
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// log2_intptr(sizeof(class JavaThread)) - log2_intptr(64);
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// see os::set_memory_serialize_page()
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#ifdef _LP64
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const int SerializePageShiftCount = 4;
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#else
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const int SerializePageShiftCount = 3;
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#endif
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// An opaque struct of heap-word width, so that HeapWord* can be a generic
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// pointer into the heap.  We require that object sizes be measured in
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// units of heap words, so that that
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//   HeapWord* hw;
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//   hw += oop(hw)->foo();
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// works, where foo is a method (like size or scavenge) that returns the
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// object size.
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class HeapWord {
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  friend class VMStructs;
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 private:
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  char* i;
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#ifndef PRODUCT
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 public:
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  char* value() { return i; }
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#endif
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};
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// HeapWordSize must be 2^LogHeapWordSize.
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const int HeapWordSize        = sizeof(HeapWord);
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#ifdef _LP64
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const int LogHeapWordSize     = 3;
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#else
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const int LogHeapWordSize     = 2;
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#endif
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const int HeapWordsPerLong    = BytesPerLong / HeapWordSize;
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const int LogHeapWordsPerLong = LogBytesPerLong - LogHeapWordSize;
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// The larger HeapWordSize for 64bit requires larger heaps
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// for the same application running in 64bit.  See bug 4967770.
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// The minimum alignment to a heap word size is done.  Other
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// parts of the memory system may required additional alignment
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// and are responsible for those alignments.
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#ifdef _LP64
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#define ScaleForWordSize(x) align_size_down_((x) * 13 / 10, HeapWordSize)
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#else
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#define ScaleForWordSize(x) (x)
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#endif
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// The minimum number of native machine words necessary to contain "byte_size"
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// bytes.
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inline size_t heap_word_size(size_t byte_size) {
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  return (byte_size + (HeapWordSize-1)) >> LogHeapWordSize;
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}
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const size_t K                  = 1024;
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const size_t M                  = K*K;
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const size_t G                  = M*K;
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const size_t HWperKB            = K / sizeof(HeapWord);
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const jint min_jint = (jint)1 << (sizeof(jint)*BitsPerByte-1); // 0x80000000 == smallest jint
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const jint max_jint = (juint)min_jint - 1;                     // 0x7FFFFFFF == largest jint
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// Constants for converting from a base unit to milli-base units.  For
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// example from seconds to milliseconds and microseconds
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const int MILLIUNITS    = 1000;         // milli units per base unit
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const int MICROUNITS    = 1000000;      // micro units per base unit
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const int NANOUNITS     = 1000000000;   // nano units per base unit
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inline const char* proper_unit_for_byte_size(size_t s) {
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  if (s >= 10*M) {
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    return "M";
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  } else if (s >= 10*K) {
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    return "K";
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  } else {
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    return "B";
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  }
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}
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inline size_t byte_size_in_proper_unit(size_t s) {
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  if (s >= 10*M) {
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    return s/M;
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  } else if (s >= 10*K) {
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    return s/K;
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  } else {
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    return s;
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  }
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}
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//----------------------------------------------------------------------------------------------------
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// VM type definitions
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// intx and uintx are the 'extended' int and 'extended' unsigned int types;
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// they are 32bit wide on a 32-bit platform, and 64bit wide on a 64bit platform.
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typedef intptr_t  intx;
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typedef uintptr_t uintx;
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const intx  min_intx  = (intx)1 << (sizeof(intx)*BitsPerByte-1);
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const intx  max_intx  = (uintx)min_intx - 1;
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const uintx max_uintx = (uintx)-1;
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// Table of values:
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//      sizeof intx         4               8
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// min_intx             0x80000000      0x8000000000000000
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// max_intx             0x7FFFFFFF      0x7FFFFFFFFFFFFFFF
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// max_uintx            0xFFFFFFFF      0xFFFFFFFFFFFFFFFF
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typedef unsigned int uint;   NEEDS_CLEANUP
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//----------------------------------------------------------------------------------------------------
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// Java type definitions
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// All kinds of 'plain' byte addresses
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typedef   signed char s_char;
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typedef unsigned char u_char;
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typedef u_char*       address;
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typedef uintptr_t     address_word; // unsigned integer which will hold a pointer
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                                    // except for some implementations of a C++
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                                    // linkage pointer to function. Should never
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                                    // need one of those to be placed in this
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                                    // type anyway.
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//  Utility functions to "portably" (?) bit twiddle pointers
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//  Where portable means keep ANSI C++ compilers quiet
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inline address       set_address_bits(address x, int m)       { return address(intptr_t(x) | m); }
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inline address       clear_address_bits(address x, int m)     { return address(intptr_t(x) & ~m); }
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//  Utility functions to "portably" make cast to/from function pointers.
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inline address_word  mask_address_bits(address x, int m)      { return address_word(x) & m; }
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inline address_word  castable_address(address x)              { return address_word(x) ; }
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inline address_word  castable_address(void* x)                { return address_word(x) ; }
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// Pointer subtraction.
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// The idea here is to avoid ptrdiff_t, which is signed and so doesn't have
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// the range we might need to find differences from one end of the heap
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// to the other.
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// A typical use might be:
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//     if (pointer_delta(end(), top()) >= size) {
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//       // enough room for an object of size
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//       ...
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// and then additions like
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//       ... top() + size ...
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// are safe because we know that top() is at least size below end().
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inline size_t pointer_delta(const void* left,
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                            const void* right,
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                            size_t element_size) {
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  return (((uintptr_t) left) - ((uintptr_t) right)) / element_size;
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}
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// A version specialized for HeapWord*'s.
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inline size_t pointer_delta(const HeapWord* left, const HeapWord* right) {
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  return pointer_delta(left, right, sizeof(HeapWord));
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}
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//
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// ANSI C++ does not allow casting from one pointer type to a function pointer
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// directly without at best a warning. This macro accomplishes it silently
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// In every case that is present at this point the value be cast is a pointer
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// to a C linkage function. In somecase the type used for the cast reflects
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// that linkage and a picky compiler would not complain. In other cases because
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// there is no convenient place to place a typedef with extern C linkage (i.e
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// a platform dependent header file) it doesn't. At this point no compiler seems
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// picky enough to catch these instances (which are few). It is possible that
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// using templates could fix these for all cases. This use of templates is likely
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// so far from the middle of the road that it is likely to be problematic in
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// many C++ compilers.
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//
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#define CAST_TO_FN_PTR(func_type, value) ((func_type)(castable_address(value)))
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#define CAST_FROM_FN_PTR(new_type, func_ptr) ((new_type)((address_word)(func_ptr)))
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// Unsigned byte types for os and stream.hpp
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// Unsigned one, two, four and eigth byte quantities used for describing
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// the .class file format. See JVM book chapter 4.
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typedef jubyte  u1;
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typedef jushort u2;
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typedef juint   u4;
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typedef julong  u8;
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const jubyte  max_jubyte  = (jubyte)-1;  // 0xFF       largest jubyte
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const jushort max_jushort = (jushort)-1; // 0xFFFF     largest jushort
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const juint   max_juint   = (juint)-1;   // 0xFFFFFFFF largest juint
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const julong  max_julong  = (julong)-1;  // 0xFF....FF largest julong
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//----------------------------------------------------------------------------------------------------
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// JVM spec restrictions
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const int max_method_code_size = 64*K - 1;  // JVM spec, 2nd ed. section 4.8.1 (p.134)
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//----------------------------------------------------------------------------------------------------
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// HotSwap - for JVMTI   aka Class File Replacement and PopFrame
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//
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// Determines whether on-the-fly class replacement and frame popping are enabled.
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#define HOTSWAP
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//----------------------------------------------------------------------------------------------------
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// Object alignment, in units of HeapWords.
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//
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// Minimum is max(BytesPerLong, BytesPerDouble, BytesPerOop) / HeapWordSize, so jlong, jdouble and
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// reference fields can be naturally aligned.
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const int MinObjAlignment            = HeapWordsPerLong;
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const int MinObjAlignmentInBytes     = MinObjAlignment * HeapWordSize;
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const int MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1;
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const int LogMinObjAlignment         = LogHeapWordsPerLong;
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const int LogMinObjAlignmentInBytes  = LogMinObjAlignment + LogHeapWordSize;
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1
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// Machine dependent stuff
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#include "incls/_globalDefinitions_pd.hpp.incl"
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// The byte alignment to be used by Arena::Amalloc.  See bugid 4169348.
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// Note: this value must be a power of 2
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#define ARENA_AMALLOC_ALIGNMENT (2*BytesPerWord)
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// Signed variants of alignment helpers.  There are two versions of each, a macro
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// for use in places like enum definitions that require compile-time constant
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// expressions and a function for all other places so as to get type checking.
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#define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1))
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inline intptr_t align_size_up(intptr_t size, intptr_t alignment) {
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  return align_size_up_(size, alignment);
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}
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#define align_size_down_(size, alignment) ((size) & ~((alignment) - 1))
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inline intptr_t align_size_down(intptr_t size, intptr_t alignment) {
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  return align_size_down_(size, alignment);
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}
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// Align objects by rounding up their size, in HeapWord units.
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#define align_object_size_(size) align_size_up_(size, MinObjAlignment)
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inline intptr_t align_object_size(intptr_t size) {
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  return align_size_up(size, MinObjAlignment);
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}
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// Pad out certain offsets to jlong alignment, in HeapWord units.
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#define align_object_offset_(offset) align_size_up_(offset, HeapWordsPerLong)
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inline intptr_t align_object_offset(intptr_t offset) {
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  return align_size_up(offset, HeapWordsPerLong);
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}
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inline bool is_object_aligned(intptr_t offset) {
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  return offset == align_object_offset(offset);
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}
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//----------------------------------------------------------------------------------------------------
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// Utility macros for compilers
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// used to silence compiler warnings
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#define Unused_Variable(var) var
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//----------------------------------------------------------------------------------------------------
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// Miscellaneous
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// 6302670 Eliminate Hotspot __fabsf dependency
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// All fabs() callers should call this function instead, which will implicitly
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// convert the operand to double, avoiding a dependency on __fabsf which
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// doesn't exist in early versions of Solaris 8.
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inline double fabsd(double value) {
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  return fabs(value);
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}
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inline jint low (jlong value)                    { return jint(value); }
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inline jint high(jlong value)                    { return jint(value >> 32); }
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// the fancy casts are a hopefully portable way
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// to do unsigned 32 to 64 bit type conversion
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inline void set_low (jlong* value, jint low )    { *value &= (jlong)0xffffffff << 32;
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                                                   *value |= (jlong)(julong)(juint)low; }
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inline void set_high(jlong* value, jint high)    { *value &= (jlong)(julong)(juint)0xffffffff;
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                                                   *value |= (jlong)high       << 32; }
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inline jlong jlong_from(jint h, jint l) {
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  jlong result = 0; // initialization to avoid warning
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  set_high(&result, h);
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  set_low(&result,  l);
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  return result;
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}
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union jlong_accessor {
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  jint  words[2];
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  jlong long_value;
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};
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void basic_types_init(); // cannot define here; uses assert
1
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// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java
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   388
enum BasicType {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   389
  T_BOOLEAN  =  4,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   390
  T_CHAR     =  5,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   391
  T_FLOAT    =  6,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   392
  T_DOUBLE   =  7,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   393
  T_BYTE     =  8,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   394
  T_SHORT    =  9,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
  T_INT      = 10,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   396
  T_LONG     = 11,
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duke
parents:
diff changeset
   397
  T_OBJECT   = 12,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   398
  T_ARRAY    = 13,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
  T_VOID     = 14,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
  T_ADDRESS  = 15,
360
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coleenp
parents: 202
diff changeset
   401
  T_NARROWOOP= 16,
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 202
diff changeset
   402
  T_CONFLICT = 17, // for stack value type with conflicting contents
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
  T_ILLEGAL  = 99
489c9b5090e2 Initial load
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parents:
diff changeset
   404
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
202
dc13bf0e5d5d 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents: 1
diff changeset
   406
inline bool is_java_primitive(BasicType t) {
dc13bf0e5d5d 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents: 1
diff changeset
   407
  return T_BOOLEAN <= t && t <= T_LONG;
dc13bf0e5d5d 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents: 1
diff changeset
   408
}
dc13bf0e5d5d 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents: 1
diff changeset
   409
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
// Convert a char from a classfile signature to a BasicType
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
inline BasicType char2type(char c) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
  switch( c ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
  case 'B': return T_BYTE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
  case 'C': return T_CHAR;
489c9b5090e2 Initial load
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parents:
diff changeset
   415
  case 'D': return T_DOUBLE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
  case 'F': return T_FLOAT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
  case 'I': return T_INT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
  case 'J': return T_LONG;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
  case 'S': return T_SHORT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
  case 'Z': return T_BOOLEAN;
489c9b5090e2 Initial load
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parents:
diff changeset
   421
  case 'V': return T_VOID;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
  case 'L': return T_OBJECT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
  case '[': return T_ARRAY;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
  }
489c9b5090e2 Initial load
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parents:
diff changeset
   425
  return T_ILLEGAL;
489c9b5090e2 Initial load
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parents:
diff changeset
   426
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
extern char type2char_tab[T_CONFLICT+1];     // Map a BasicType to a jchar
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
inline char type2char(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2char_tab[t] : 0; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
extern int type2size[T_CONFLICT+1];         // Map BasicType to result stack elements
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
extern const char* type2name_tab[T_CONFLICT+1];     // Map a BasicType to a jchar
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
inline const char* type2name(BasicType t) { return (uint)t < T_CONFLICT+1 ? type2name_tab[t] : NULL; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
extern BasicType name2type(const char* name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
// Auxilary math routines
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
// least common multiple
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
extern size_t lcm(size_t a, size_t b);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
enum BasicTypeSize {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
  T_BOOLEAN_size = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
  T_CHAR_size    = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
  T_FLOAT_size   = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
  T_DOUBLE_size  = 2,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
  T_BYTE_size    = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
  T_SHORT_size   = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
  T_INT_size     = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
  T_LONG_size    = 2,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
  T_OBJECT_size  = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
  T_ARRAY_size   = 1,
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 202
diff changeset
   452
  T_NARROWOOP_size = 1,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
  T_VOID_size    = 0
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
// maps a BasicType to its instance field storage type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
// all sub-word integral types are widened to T_INT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
extern BasicType type2field[T_CONFLICT+1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
extern BasicType type2wfield[T_CONFLICT+1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
// size in bytes
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
enum ArrayElementSize {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
  T_BOOLEAN_aelem_bytes = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
  T_CHAR_aelem_bytes    = 2,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
  T_FLOAT_aelem_bytes   = 4,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
  T_DOUBLE_aelem_bytes  = 8,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
  T_BYTE_aelem_bytes    = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
  T_SHORT_aelem_bytes   = 2,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
  T_INT_aelem_bytes     = 4,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
  T_LONG_aelem_bytes    = 8,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
#ifdef _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
  T_OBJECT_aelem_bytes  = 8,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
  T_ARRAY_aelem_bytes   = 8,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
  T_OBJECT_aelem_bytes  = 4,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
  T_ARRAY_aelem_bytes   = 4,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
#endif
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 202
diff changeset
   480
  T_NARROWOOP_aelem_bytes = 4,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
  T_VOID_aelem_bytes    = 0
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
202
dc13bf0e5d5d 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents: 1
diff changeset
   484
extern int _type2aelembytes[T_CONFLICT+1]; // maps a BasicType to nof bytes used by its array element
dc13bf0e5d5d 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents: 1
diff changeset
   485
#ifdef ASSERT
dc13bf0e5d5d 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents: 1
diff changeset
   486
extern int type2aelembytes(BasicType t, bool allow_address = false); // asserts
dc13bf0e5d5d 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents: 1
diff changeset
   487
#else
dc13bf0e5d5d 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents: 1
diff changeset
   488
inline int type2aelembytes(BasicType t) { return _type2aelembytes[t]; }
dc13bf0e5d5d 6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents: 1
diff changeset
   489
#endif
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
// JavaValue serves as a container for arbitrary Java values.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
class JavaValue {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
  typedef union JavaCallValue {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
    jfloat   f;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
    jdouble  d;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
    jint     i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
    jlong    l;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
    jobject  h;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
  } JavaCallValue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
  BasicType _type;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
  JavaCallValue _value;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
  JavaValue(BasicType t = T_ILLEGAL) { _type = t; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
  JavaValue(jfloat value) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
    _type    = T_FLOAT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
    _value.f = value;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
  JavaValue(jdouble value) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
    _type    = T_DOUBLE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
    _value.d = value;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
 jfloat get_jfloat() const { return _value.f; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
 jdouble get_jdouble() const { return _value.d; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
 jint get_jint() const { return _value.i; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
 jlong get_jlong() const { return _value.l; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
 jobject get_jobject() const { return _value.h; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
 JavaCallValue* get_value_addr() { return &_value; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
 BasicType get_type() const { return _type; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
 void set_jfloat(jfloat f) { _value.f = f;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
 void set_jdouble(jdouble d) { _value.d = d;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
 void set_jint(jint i) { _value.i = i;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
 void set_jlong(jlong l) { _value.l = l;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
 void set_jobject(jobject h) { _value.h = h;}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
 void set_type(BasicType t) { _type = t; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
 jboolean get_jboolean() const { return (jboolean) (_value.i);}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
 jbyte get_jbyte() const { return (jbyte) (_value.i);}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
 jchar get_jchar() const { return (jchar) (_value.i);}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
 jshort get_jshort() const { return (jshort) (_value.i);}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
#define STACK_BIAS      0
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
// V9 Sparc CPU's running in 64 Bit mode use a stack bias of 7ff
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
// in order to extend the reach of the stack pointer.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
#if defined(SPARC) && defined(_LP64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
#undef STACK_BIAS
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
#define STACK_BIAS      0x7ff
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
// TosState describes the top-of-stack state before and after the execution of
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
// a bytecode or method. The top-of-stack value may be cached in one or more CPU
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
// registers. The TosState corresponds to the 'machine represention' of this cached
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
// value. There's 4 states corresponding to the JAVA types int, long, float & double
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
// as well as a 5th state in case the top-of-stack value is actually on the top
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
// of stack (in memory) and thus not cached. The atos state corresponds to the itos
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
// state when it comes to machine representation but is used separately for (oop)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
// type specific operations (e.g. verification code).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
enum TosState {         // describes the tos cache contents
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
  btos = 0,             // byte, bool tos cached
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
  ctos = 1,             // short, char tos cached
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
  stos = 2,             // short, char tos cached
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
  itos = 3,             // int tos cached
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
  ltos = 4,             // long tos cached
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
  ftos = 5,             // float tos cached
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
  dtos = 6,             // double tos cached
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
  atos = 7,             // object cached
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
  vtos = 8,             // tos not cached
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
  number_of_states,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
  ilgl                  // illegal state: should not occur
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
inline TosState as_TosState(BasicType type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
  switch (type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
    case T_BYTE   : return btos;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
    case T_BOOLEAN: return btos;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
    case T_CHAR   : return ctos;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
    case T_SHORT  : return stos;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
    case T_INT    : return itos;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
    case T_LONG   : return ltos;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
    case T_FLOAT  : return ftos;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
    case T_DOUBLE : return dtos;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
    case T_VOID   : return vtos;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
    case T_ARRAY  : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
    case T_OBJECT : return atos;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
  return ilgl;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
// Helper function to convert BasicType info into TosState
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
// Note: Cannot define here as it uses global constant at the time being.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
TosState as_TosState(BasicType type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
// ReferenceType is used to distinguish between java/lang/ref/Reference subclasses
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
enum ReferenceType {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
 REF_NONE,      // Regular class
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
 REF_OTHER,     // Subclass of java/lang/ref/Reference, but not subclass of one of the classes below
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
 REF_SOFT,      // Subclass of java/lang/ref/SoftReference
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
 REF_WEAK,      // Subclass of java/lang/ref/WeakReference
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
 REF_FINAL,     // Subclass of java/lang/ref/FinalReference
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
 REF_PHANTOM    // Subclass of java/lang/ref/PhantomReference
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
// JavaThreadState keeps track of which part of the code a thread is executing in. This
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
// information is needed by the safepoint code.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
// There are 4 essential states:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
//  _thread_new         : Just started, but not executed init. code yet (most likely still in OS init code)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
//  _thread_in_native   : In native code. This is a safepoint region, since all oops will be in jobject handles
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
//  _thread_in_vm       : Executing in the vm
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
//  _thread_in_Java     : Executing either interpreted or compiled Java code (or could be in a stub)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
// Each state has an associated xxxx_trans state, which is an intermediate state used when a thread is in
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
// a transition from one state to another. These extra states makes it possible for the safepoint code to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
// handle certain thread_states without having to suspend the thread - making the safepoint code faster.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
// Given a state, the xxx_trans state can always be found by adding 1.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
enum JavaThreadState {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
  _thread_uninitialized     =  0, // should never happen (missing initialization)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
  _thread_new               =  2, // just starting up, i.e., in process of being initialized
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
  _thread_new_trans         =  3, // corresponding transition state (not used, included for completness)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
  _thread_in_native         =  4, // running in native code
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
  _thread_in_native_trans   =  5, // corresponding transition state
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
  _thread_in_vm             =  6, // running in VM
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
  _thread_in_vm_trans       =  7, // corresponding transition state
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
  _thread_in_Java           =  8, // running in Java or in stub code
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
  _thread_in_Java_trans     =  9, // corresponding transition state (not used, included for completness)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
  _thread_blocked           = 10, // blocked in vm
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
  _thread_blocked_trans     = 11, // corresponding transition state
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
  _thread_max_state         = 12  // maximum thread state+1 - used for statistics allocation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
// Handy constants for deciding which compiler mode to use.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
enum MethodCompilation {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
  InvocationEntryBci = -1,     // i.e., not a on-stack replacement compilation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
  InvalidOSREntryBci = -2
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
// Enumeration to distinguish tiers of compilation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
enum CompLevel {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
  CompLevel_none              = 0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
  CompLevel_fast_compile      = 1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
  CompLevel_full_optimization = 2,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
  CompLevel_highest_tier      = CompLevel_full_optimization,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
#ifdef TIERED
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
  CompLevel_initial_compile   = CompLevel_fast_compile
489c9b5090e2 Initial load
duke
parents:
diff changeset
   660
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   661
  CompLevel_initial_compile   = CompLevel_full_optimization
489c9b5090e2 Initial load
duke
parents:
diff changeset
   662
#endif // TIERED
489c9b5090e2 Initial load
duke
parents:
diff changeset
   663
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   664
489c9b5090e2 Initial load
duke
parents:
diff changeset
   665
inline bool is_tier1_compile(int comp_level) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
  return comp_level == CompLevel_fast_compile;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   667
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
inline bool is_tier2_compile(int comp_level) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   669
  return comp_level == CompLevel_full_optimization;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
inline bool is_highest_tier_compile(int comp_level) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
  return comp_level == CompLevel_highest_tier;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
//----------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
// 'Forward' declarations of frequently used classes
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
// (in order to reduce interface dependencies & reduce
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
// number of unnecessary compilations after changes)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
class symbolTable;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
class ClassFileStream;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
class Event;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
class Thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
class  VMThread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
class  JavaThread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
class Threads;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
class VM_Operation;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
class VMOperationQueue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
class CodeBlob;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
class  nmethod;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
class  OSRAdapter;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
class  I2CAdapter;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
class  C2IAdapter;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
class CompiledIC;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
class relocInfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
class ScopeDesc;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
class PcDesc;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
class Recompiler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
class Recompilee;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
class RecompilationPolicy;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
class RFrame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
class  CompiledRFrame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
class  InterpretedRFrame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
class frame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
class vframe;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
class   javaVFrame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
class     interpretedVFrame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
class     compiledVFrame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
class     deoptimizedVFrame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
class   externalVFrame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
class     entryVFrame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
class RegisterMap;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
class Mutex;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
class Monitor;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
class BasicLock;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
class BasicObjectLock;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
class PeriodicTask;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
class JavaCallWrapper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
class   oopDesc;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
class NativeCall;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
class zone;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
class StubQueue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
class outputStream;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
class ResourceArea;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
class DebugInformationRecorder;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
class ScopeValue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
class CompressedStream;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
class   DebugInfoReadStream;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
class   DebugInfoWriteStream;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
class LocationValue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
class ConstantValue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
class IllegalValue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
class PrivilegedElement;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
class MonitorArray;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
class MonitorInfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
class OffsetClosure;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
class OopMapCache;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
class InterpreterOopMap;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
class OopMapCacheEntry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
class OSThread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
typedef int (*OSThreadStartFunc)(void*);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
class Space;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
class JavaValue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
class methodHandle;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
class JavaCallArguments;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
// Basic support for errors (general debug facilities not defined at this point fo the include phase)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
extern void basic_fatal(const char* msg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
//----------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
// Special constants for debugging
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
const jint     badInt           = -3;                       // generic "bad int" value
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
const long     badAddressVal    = -2;                       // generic "bad address" value
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
const long     badOopVal        = -1;                       // generic "bad oop" value
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
const intptr_t badHeapOopVal    = (intptr_t) CONST64(0x2BAD4B0BBAADBABE); // value used to zap heap after GC
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
const int      badHandleValue   = 0xBC;                     // value used to zap vm handle area
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
const int      badResourceValue = 0xAB;                     // value used to zap resource area
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
const int      freeBlockPad     = 0xBA;                     // value used to pad freed blocks.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
const int      uninitBlockPad   = 0xF1;                     // value used to zap newly malloc'd blocks.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
const intptr_t badJNIHandleVal  = (intptr_t) CONST64(0xFEFEFEFEFEFEFEFE); // value used to zap jni handle area
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
const juint    badHeapWordVal   = 0xBAADBABE;               // value used to zap heap after GC
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
const int      badCodeHeapNewVal= 0xCC;                     // value used to zap Code heap at allocation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
const int      badCodeHeapFreeVal = 0xDD;                   // value used to zap Code heap at deallocation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
// (These must be implemented as #defines because C++ compilers are
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
// not obligated to inline non-integral constants!)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
#define       badAddress        ((address)::badAddressVal)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
#define       badOop            ((oop)::badOopVal)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
#define       badHeapWord       (::badHeapWordVal)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
#define       badJNIHandle      ((oop)::badJNIHandleVal)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
//----------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
// Utility functions for bitfield manipulations
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
const intptr_t AllBits    = ~0; // all bits set in a word
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
const intptr_t NoBits     =  0; // no bits set in a word
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
const jlong    NoLongBits =  0; // no bits set in a long
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
const intptr_t OneBit     =  1; // only right_most bit set in a word
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
// get a word with the n.th or the right-most or left-most n bits set
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
// (note: #define used only so that they can be used in enum constant definitions)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
#define nth_bit(n)        (n >= BitsPerWord ? 0 : OneBit << (n))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
#define right_n_bits(n)   (nth_bit(n) - 1)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
#define left_n_bits(n)    (right_n_bits(n) << (n >= BitsPerWord ? 0 : (BitsPerWord - n)))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
// bit-operations using a mask m
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
inline void   set_bits    (intptr_t& x, intptr_t m) { x |= m; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
inline void clear_bits    (intptr_t& x, intptr_t m) { x &= ~m; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
inline intptr_t mask_bits      (intptr_t  x, intptr_t m) { return x & m; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
inline jlong    mask_long_bits (jlong     x, jlong    m) { return x & m; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
inline bool mask_bits_are_true (intptr_t flags, intptr_t mask) { return (flags & mask) == mask; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
489c9b5090e2 Initial load
duke
parents:
diff changeset
   822
// bit-operations using the n.th bit
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
inline void    set_nth_bit(intptr_t& x, int n) { set_bits  (x, nth_bit(n)); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
inline void  clear_nth_bit(intptr_t& x, int n) { clear_bits(x, nth_bit(n)); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
inline bool is_set_nth_bit(intptr_t  x, int n) { return mask_bits (x, nth_bit(n)) != NoBits; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
// returns the bitfield of x starting at start_bit_no with length field_length (no sign-extension!)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
inline intptr_t bitfield(intptr_t x, int start_bit_no, int field_length) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
  return mask_bits(x >> start_bit_no, right_n_bits(field_length));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
//----------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
// Utility functions for integers
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
// Avoid use of global min/max macros which may cause unwanted double
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
// evaluation of arguments.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
#ifdef max
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
#undef max
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
#ifdef min
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
#undef min
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
#define max(a,b) Do_not_use_max_use_MAX2_instead
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
#define min(a,b) Do_not_use_min_use_MIN2_instead
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
// It is necessary to use templates here. Having normal overloaded
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
// functions does not work because it is necessary to provide both 32-
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
// and 64-bit overloaded functions, which does not work, and having
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
// explicitly-typed versions of these routines (i.e., MAX2I, MAX2L)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
// will be even more error-prone than macros.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
template<class T> inline T MAX2(T a, T b)           { return (a > b) ? a : b; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
template<class T> inline T MIN2(T a, T b)           { return (a < b) ? a : b; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
template<class T> inline T MAX3(T a, T b, T c)      { return MAX2(MAX2(a, b), c); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
template<class T> inline T MIN3(T a, T b, T c)      { return MIN2(MIN2(a, b), c); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
template<class T> inline T MAX4(T a, T b, T c, T d) { return MAX2(MAX3(a, b, c), d); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
template<class T> inline T MIN4(T a, T b, T c, T d) { return MIN2(MIN3(a, b, c), d); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
template<class T> inline T ABS(T x)                 { return (x > 0) ? x : -x; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
// true if x is a power of 2, false otherwise
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
inline bool is_power_of_2(intptr_t x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
  return ((x != NoBits) && (mask_bits(x, x - 1) == NoBits));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
// long version of is_power_of_2
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
inline bool is_power_of_2_long(jlong x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
  return ((x != NoLongBits) && (mask_long_bits(x, x - 1) == NoLongBits));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
//* largest i such that 2^i <= x
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
//  A negative value of 'x' will return '31'
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
inline int log2_intptr(intptr_t x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
  int i = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
  uintptr_t p =  1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
  while (p != 0 && p <= (uintptr_t)x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
    // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
    i++; p *= 2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
  // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
  // (if p = 0 then overflow occured and i = 31)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
  return i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
//* largest i such that 2^i <= x
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
//  A negative value of 'x' will return '63'
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
inline int log2_long(jlong x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
  int i = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
  julong p =  1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
  while (p != 0 && p <= (julong)x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
    // p = 2^(i+1) && p <= x (i.e., 2^(i+1) <= x)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
    i++; p *= 2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
  // p = 2^(i+1) && x < p (i.e., 2^i <= x < 2^(i+1))
392
0b3167e2f2de 6603011: RFE: Optimize long division
rasbold
parents: 360
diff changeset
   897
  // (if p = 0 then overflow occured and i = 63)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
  return i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
//* the argument must be exactly a power of 2
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
inline int exact_log2(intptr_t x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
  #ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
    if (!is_power_of_2(x)) basic_fatal("x must be a power of 2");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
  #endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
  return log2_intptr(x);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
// returns integer round-up to the nearest multiple of s (s must be a power of two)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
inline intptr_t round_to(intptr_t x, uintx s) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
  #ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
    if (!is_power_of_2(s)) basic_fatal("s must be a power of 2");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
  #endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
  const uintx m = s - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
  return mask_bits(x + m, ~m);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
// returns integer round-down to the nearest multiple of s (s must be a power of two)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
inline intptr_t round_down(intptr_t x, uintx s) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
  #ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
    if (!is_power_of_2(s)) basic_fatal("s must be a power of 2");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
  #endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
  const uintx m = s - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
  return mask_bits(x, ~m);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
inline bool is_odd (intx x) { return x & 1;      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
inline bool is_even(intx x) { return !is_odd(x); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
// "to" should be greater than "from."
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
inline intx byte_size(void* from, void* to) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
  return (address)to - (address)from;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
//----------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
// Avoid non-portable casts with these routines (DEPRECATED)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
// NOTE: USE Bytes class INSTEAD WHERE POSSIBLE
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
//       Bytes is optimized machine-specifically and may be much faster then the portable routines below.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
// Given sequence of four bytes, build into a 32-bit word
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
// following the conventions used in class files.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
// On the 386, this could be realized with a simple address cast.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
// This routine takes eight bytes:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
inline u8 build_u8_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
  return  ( u8(c1) << 56 )  &  ( u8(0xff) << 56 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
       |  ( u8(c2) << 48 )  &  ( u8(0xff) << 48 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
       |  ( u8(c3) << 40 )  &  ( u8(0xff) << 40 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
       |  ( u8(c4) << 32 )  &  ( u8(0xff) << 32 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
       |  ( u8(c5) << 24 )  &  ( u8(0xff) << 24 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
       |  ( u8(c6) << 16 )  &  ( u8(0xff) << 16 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
       |  ( u8(c7) <<  8 )  &  ( u8(0xff) <<  8 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
       |  ( u8(c8) <<  0 )  &  ( u8(0xff) <<  0 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
// This routine takes four bytes:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
inline u4 build_u4_from( u1 c1, u1 c2, u1 c3, u1 c4 ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
  return  ( u4(c1) << 24 )  &  0xff000000
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
       |  ( u4(c2) << 16 )  &  0x00ff0000
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
       |  ( u4(c3) <<  8 )  &  0x0000ff00
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
       |  ( u4(c4) <<  0 )  &  0x000000ff;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
// And this one works if the four bytes are contiguous in memory:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
inline u4 build_u4_from( u1* p ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
  return  build_u4_from( p[0], p[1], p[2], p[3] );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
// Ditto for two-byte ints:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
inline u2 build_u2_from( u1 c1, u1 c2 ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
  return  u2(( u2(c1) <<  8 )  &  0xff00
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
          |  ( u2(c2) <<  0 )  &  0x00ff);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
// And this one works if the two bytes are contiguous in memory:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
inline u2 build_u2_from( u1* p ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
  return  build_u2_from( p[0], p[1] );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
// Ditto for floats:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   985
inline jfloat build_float_from( u1 c1, u1 c2, u1 c3, u1 c4 ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   986
  u4 u = build_u4_from( c1, c2, c3, c4 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   987
  return  *(jfloat*)&u;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   988
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
inline jfloat build_float_from( u1* p ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
  u4 u = build_u4_from( p );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
  return  *(jfloat*)&u;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
// now (64-bit) longs
489c9b5090e2 Initial load
duke
parents:
diff changeset
   997
489c9b5090e2 Initial load
duke
parents:
diff changeset
   998
inline jlong build_long_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   999
  return  ( jlong(c1) << 56 )  &  ( jlong(0xff) << 56 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1000
       |  ( jlong(c2) << 48 )  &  ( jlong(0xff) << 48 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1001
       |  ( jlong(c3) << 40 )  &  ( jlong(0xff) << 40 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
       |  ( jlong(c4) << 32 )  &  ( jlong(0xff) << 32 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1003
       |  ( jlong(c5) << 24 )  &  ( jlong(0xff) << 24 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1004
       |  ( jlong(c6) << 16 )  &  ( jlong(0xff) << 16 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1005
       |  ( jlong(c7) <<  8 )  &  ( jlong(0xff) <<  8 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1006
       |  ( jlong(c8) <<  0 )  &  ( jlong(0xff) <<  0 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1007
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1009
inline jlong build_long_from( u1* p ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1010
  return  build_long_from( p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7] );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1011
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
// Doubles, too!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1015
inline jdouble build_double_from( u1 c1, u1 c2, u1 c3, u1 c4, u1 c5, u1 c6, u1 c7, u1 c8 ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1016
  jlong u = build_long_from( c1, c2, c3, c4, c5, c6, c7, c8 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1017
  return  *(jdouble*)&u;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1019
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1020
inline jdouble build_double_from( u1* p ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1021
  jlong u = build_long_from( p );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1022
  return  *(jdouble*)&u;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1023
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1024
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1025
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1026
// Portable routines to go the other way:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1027
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1028
inline void explode_short_to( u2 x, u1& c1, u1& c2 ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1029
  c1 = u1(x >> 8);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1030
  c2 = u1(x);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1031
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1032
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1033
inline void explode_short_to( u2 x, u1* p ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1034
  explode_short_to( x, p[0], p[1]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1035
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1036
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1037
inline void explode_int_to( u4 x, u1& c1, u1& c2, u1& c3, u1& c4 ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1038
  c1 = u1(x >> 24);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1039
  c2 = u1(x >> 16);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1040
  c3 = u1(x >>  8);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1041
  c4 = u1(x);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1042
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1043
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1044
inline void explode_int_to( u4 x, u1* p ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1045
  explode_int_to( x, p[0], p[1], p[2], p[3]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1046
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1047
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1048
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1049
// Pack and extract shorts to/from ints:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1050
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1051
inline int extract_low_short_from_int(jint x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1052
  return x & 0xffff;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1053
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1054
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1055
inline int extract_high_short_from_int(jint x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1056
  return (x >> 16) & 0xffff;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1057
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1058
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1059
inline int build_int_from_shorts( jushort low, jushort high ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1060
  return ((int)((unsigned int)high << 16) | (unsigned int)low);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1061
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1062
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1063
// Printf-style formatters for fixed- and variable-width types as pointers and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1064
// integers.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1065
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1066
// Each compiler-specific definitions file (e.g., globalDefinitions_gcc.hpp)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1067
// must define the macro FORMAT64_MODIFIER, which is the modifier for '%x' or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
// '%d' formats to indicate a 64-bit quantity; commonly "l" (in LP64) or "ll"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
// (in ILP32).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1070
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1071
// Format 32-bit quantities.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1072
#define INT32_FORMAT  "%d"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1073
#define UINT32_FORMAT "%u"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1074
#define INT32_FORMAT_W(width)   "%" #width "d"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
#define UINT32_FORMAT_W(width)  "%" #width "u"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1076
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1077
#define PTR32_FORMAT  "0x%08x"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1078
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1079
// Format 64-bit quantities.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1080
#define INT64_FORMAT  "%" FORMAT64_MODIFIER "d"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1081
#define UINT64_FORMAT "%" FORMAT64_MODIFIER "u"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1082
#define PTR64_FORMAT  "0x%016" FORMAT64_MODIFIER "x"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1083
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1084
#define INT64_FORMAT_W(width)  "%" #width FORMAT64_MODIFIER "d"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1085
#define UINT64_FORMAT_W(width) "%" #width FORMAT64_MODIFIER "u"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1086
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1087
// Format macros that allow the field width to be specified.  The width must be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
// a string literal (e.g., "8") or a macro that evaluates to one.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1089
#ifdef _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1090
#define SSIZE_FORMAT_W(width)   INT64_FORMAT_W(width)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1091
#define SIZE_FORMAT_W(width)    UINT64_FORMAT_W(width)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1092
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
#define SSIZE_FORMAT_W(width)   INT32_FORMAT_W(width)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1094
#define SIZE_FORMAT_W(width)    UINT32_FORMAT_W(width)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1095
#endif // _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
// Format pointers and size_t (or size_t-like integer types) which change size
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1098
// between 32- and 64-bit.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1099
#ifdef  _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1100
#define PTR_FORMAT    PTR64_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1101
#define UINTX_FORMAT  UINT64_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1102
#define INTX_FORMAT   INT64_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1103
#define SIZE_FORMAT   UINT64_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1104
#define SSIZE_FORMAT  INT64_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1105
#else   // !_LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1106
#define PTR_FORMAT    PTR32_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1107
#define UINTX_FORMAT  UINT32_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
#define INTX_FORMAT   INT32_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
#define SIZE_FORMAT   UINT32_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
#define SSIZE_FORMAT  INT32_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
#endif  // _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
#define INTPTR_FORMAT PTR_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1114
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
// Enable zap-a-lot if in debug version.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
# ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
# ifdef COMPILER2
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
#   define ENABLE_ZAP_DEAD_LOCALS
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1120
#endif /* COMPILER2 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
# endif /* ASSERT */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
#define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0]))