Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

  * CA 95054 USA or visit www.sun.com if you need additional information or

  * have any questions.

  *

  */

 // This file holds compiler-dependent includes,

 // globally used constants & types, class (forward)

 // declarations and a few frequently used utility functions.

 # include <ctype.h>

 # include <string.h>

 # include <stdarg.h>

 # include <stdlib.h>

 # include <stddef.h>// for offsetof

 # include <io.h>    // for stream.cpp

 # include <float.h> // for _isnan

 # include <stdio.h> // for va_list

 # include <time.h>

 # include <fcntl.h>

 // Need this on windows to get the math constants (e.g., M_PI).

 #define _USE_MATH_DEFINES

 # include <math.h>

 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures

 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in

 // system header files.  On 32-bit architectures, there is no problem.

 // On 64-bit architectures, defining NULL as a 32-bit constant can cause

 // problems with varargs functions: C++ integral promotion rules say for

 // varargs, we pass the argument 0 as an int.  So, if NULL was passed to a

 // varargs function it will remain 32-bits.  Depending on the calling

 // convention of the machine, if the argument is passed on the stack then

 // only 32-bits of the "NULL" pointer may be initialized to zero.  The

 // other 32-bits will be garbage.  If the varargs function is expecting a

 // pointer when it extracts the argument, then we may have a problem.

 //

 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.

 #ifdef _LP64

 #undef NULL

 // 64-bit Windows uses a P64 data model (not LP64, although we define _LP64)

 // Since longs are 32-bit we cannot use 0L here.  Use the Visual C++ specific

 // 64-bit integer-suffix (i64) instead.

 #define NULL 0i64

 #else

 #ifndef NULL

 #define NULL 0

 #endif

 #endif

 // NULL vs NULL_WORD:

 // On Linux NULL is defined as a special type '__null'. Assigning __null to

 // integer variable will cause gcc warning. Use NULL_WORD in places where a

 // pointer is stored as integer value.

 #define NULL_WORD NULL

 // Compiler-specific primitive types

 typedef unsigned __int8  uint8_t;

 typedef unsigned __int16 uint16_t;

 typedef unsigned __int32 uint32_t;

 typedef unsigned __int64 uint64_t;

 #ifdef _WIN64

 typedef unsigned __int64 uintptr_t;

 #else

 typedef unsigned int uintptr_t;

 #endif

 typedef signed   __int8  int8_t;

 typedef signed   __int16 int16_t;

 typedef signed   __int32 int32_t;

 typedef signed   __int64 int64_t;

 #ifdef _WIN64

 typedef signed   __int64 intptr_t;

 typedef signed   __int64 ssize_t;

 #else

 typedef signed   int intptr_t;

 typedef signed   int ssize_t;

 #endif

 //----------------------------------------------------------------------------------------------------

 // Additional Java basic types

 typedef unsigned char    jubyte;

 typedef unsigned short   jushort;

 typedef unsigned int     juint;

 typedef unsigned __int64 julong;

 //----------------------------------------------------------------------------------------------------

 // Special (possibly not-portable) casts

 // Cast floats into same-size integers and vice-versa w/o changing bit-pattern

 inline jint    jint_cast   (jfloat  x)           { return *(jint*   )&x; }

 inline jlong   jlong_cast  (jdouble x)           { return *(jlong*  )&x; }

 inline jfloat  jfloat_cast (jint    x)           { return *(jfloat* )&x; }

 inline jdouble jdouble_cast(jlong   x)           { return *(jdouble*)&x; }

 //----------------------------------------------------------------------------------------------------

 // Non-standard stdlib-like stuff:

 inline int strcasecmp(const char *s1, const char *s2) { return _stricmp(s1,s2); }

 //----------------------------------------------------------------------------------------------------

 // Debugging

 #if _WIN64

 extern "C" void breakpoint();

 #define BREAKPOINT ::breakpoint()

 #else

 #define BREAKPOINT __asm { int 3 }

 #endif

 //----------------------------------------------------------------------------------------------------

 // Checking for nanness

 inline int g_isnan(jfloat  f)                    { return _isnan(f); }

 inline int g_isnan(jdouble f)                    { return _isnan(f); }

 //----------------------------------------------------------------------------------------------------

 // Checking for finiteness

 inline int g_isfinite(jfloat  f)                 { return _finite(f); }

 inline int g_isfinite(jdouble f)                 { return _finite(f); }

 //----------------------------------------------------------------------------------------------------

 // Constant for jlong (specifying an long long constant is C++ compiler specific)

 // Build a 64bit integer constant on with Visual C++

 #define CONST64(x)  (x ## i64)

 #define UCONST64(x) ((uint64_t)CONST64(x))

 const jlong min_jlong = CONST64(0x8000000000000000);

 const jlong max_jlong = CONST64(0x7fffffffffffffff);

 //----------------------------------------------------------------------------------------------------

 // Miscellaneous

 inline int vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) {

   // If number of characters written == count, Windows doesn't write a

   // terminating NULL, so we do it ourselves.

   int ret = _vsnprintf(buf, count, fmt, argptr);

   if (count > 0) buf[count-1] = '\0';

   return ret;

 }

 // Visual Studio 2005 deprecates POSIX names - use ISO C++ names instead

 #if _MSC_VER >= 1400 && !defined(_WIN64)

 #define open _open

 #define close _close

 #define read  _read

 #define write _write

 #define lseek _lseek

 #define unlink _unlink

 #define strdup _strdup

 #endif

 #pragma warning( disable : 4100 ) // unreferenced formal parameter

 #pragma warning( disable : 4127 ) // conditional expression is constant

 #pragma warning( disable : 4514 ) // unreferenced inline function has been removed

 #pragma warning( disable : 4244 ) // possible loss of data

 #pragma warning( disable : 4512 ) // assignment operator could not be generated

 #pragma warning( disable : 4201 ) // nonstandard extension used : nameless struct/union (needed in windows.h)

 #pragma warning( disable : 4511 ) // copy constructor could not be generated

 #pragma warning( disable : 4291 ) // no matching operator delete found; memory will not be freed if initialization thows an exception

 // Portability macros

 #define PRAGMA_INTERFACE

 #define PRAGMA_IMPLEMENTATION

 #define PRAGMA_IMPLEMENTATION_(arg)

 #define VALUE_OBJ_CLASS_SPEC    : public _ValueObj

 // Formatting.

 #define FORMAT64_MODIFIER "I64"

 #define offset_of(klass,field) offsetof(klass,field)