Mercurial > hg > truffle
diff src/share/vm/utilities/globalDefinitions_visCPP.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | c3a720eefe82 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/utilities/globalDefinitions_visCPP.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,193 @@ +/* + * 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)