diff -r 000000000000 -r a61af66fc99e src/share/vm/utilities/globalDefinitions_gcc.hpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/utilities/globalDefinitions_gcc.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,275 @@ +/* + * Copyright 1998-2007 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 +#include +#include +#include +#include +#include +#include + +#ifdef SOLARIS +#include +#endif // SOLARIS + +#include +#ifndef FP_PZERO +// Linux doesn't have positive/negative zero +#define FP_PZERO FP_ZERO +#endif +#if (!defined fpclass) && ((!defined SPARC) || (!defined SOLARIS)) +#define fpclass fpclassify +#endif + +#include +#include +#include +#include + +#ifdef SOLARIS +#include +#endif // SOLARIS + +#include +#include + +#ifdef SOLARIS +#include +#include +#include +#include +#include +#endif // SOLARIS + +# ifdef SOLARIS_MUTATOR_LIBTHREAD +# include +# endif + +#ifdef LINUX +#include +#include +#include +#include +#endif // LINUX + +// 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 have a problem. +// +// Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0. +// +// Note: this fix doesn't work well on Linux because NULL will be overwritten +// whenever a system header file is included. Linux handles NULL correctly +// through a special type '__null'. +#ifdef SOLARIS + #ifdef _LP64 + #undef NULL + #define NULL 0L + #else + #ifndef NULL + #define NULL 0 + #endif + #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. On some platforms, sizeof(intptr_t) > +// sizeof(void*), so here we want something which is integer type, but has the +// same size as a pointer. +#ifdef LINUX + #ifdef _LP64 + #define NULL_WORD 0L + #else + #define NULL_WORD 0 + #endif +#else + #define NULL_WORD NULL +#endif + +#ifndef LINUX +// Compiler-specific primitive types +typedef unsigned short uint16_t; +#ifndef _UINT32_T +#define _UINT32_T +typedef unsigned int uint32_t; +#endif // _UINT32_T + +#if !defined(_SYS_INT_TYPES_H) +#ifndef _UINT64_T +#define _UINT64_T +typedef unsigned long long uint64_t; +#endif // _UINT64_T +// %%%% how to access definition of intptr_t portably in 5.5 onward? +typedef int intptr_t; +typedef unsigned int uintptr_t; +// If this gets an error, figure out a symbol XXX that implies the +// prior definition of intptr_t, and add "&& !defined(XXX)" above. +#endif // _SYS_INT_TYPES_H + +#endif // !LINUX + +// Additional Java basic types + +typedef uint8_t jubyte; +typedef uint16_t jushort; +typedef uint32_t juint; +typedef uint64_t julong; + +//---------------------------------------------------------------------------------------------------- +// Special (possibly not-portable) casts +// Cast floats into same-size integers and vice-versa w/o changing bit-pattern +// %%%%%% These seem like standard C++ to me--how about factoring them out? - Ungar + +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; } + +//---------------------------------------------------------------------------------------------------- +// Constant for jlong (specifying an long long canstant is C++ compiler specific) + +// Build a 64bit integer constant +#define CONST64(x) (x ## LL) +#define UCONST64(x) (x ## ULL) + +const jlong min_jlong = CONST64(0x8000000000000000); +const jlong max_jlong = CONST64(0x7fffffffffffffff); + + +#ifdef SOLARIS +//---------------------------------------------------------------------------------------------------- +// ANSI C++ fixes +// NOTE:In the ANSI committee's continuing attempt to make each version +// of C++ incompatible with the previous version, you can no longer cast +// pointers to functions without specifying linkage unless you want to get +// warnings. +// +// This also means that pointers to functions can no longer be "hidden" +// in opaque types like void * because at the invokation point warnings +// will be generated. While this makes perfect sense from a type safety +// point of view it causes a lot of warnings on old code using C header +// files. Here are some typedefs to make the job of silencing warnings +// a bit easier. +// +// The final kick in the teeth is that you can only have extern "C" linkage +// specified at file scope. So these typedefs are here rather than in the +// .hpp for the class (os:Solaris usually) that needs them. + +extern "C" { + typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t); + typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t); + typedef int (*int_fnP_thread_t_i)(thread_t, int); + typedef int (*int_fnP_thread_t)(thread_t); + + typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst); + typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx); + + // typedef for missing API in libc + typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *); + typedef int (*int_fnP_mutex_tP)(mutex_t *); + typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg); + typedef int (*int_fnP_cond_tP)(cond_t *cv); +}; +#endif // SOLARIS + +//---------------------------------------------------------------------------------------------------- +// Debugging + +#define DEBUG_EXCEPTION ::abort(); + +extern "C" void breakpoint(); +#define BREAKPOINT ::breakpoint() + +// checking for nanness +#ifdef SOLARIS +#ifdef SPARC +inline int g_isnan(float f) { return isnanf(f); } +#else +// isnanf() broken on Intel Solaris use isnand() +inline int g_isnan(float f) { return isnand(f); } +#endif +inline int g_isnan(double f) { return isnand(f); } +#elif LINUX +inline int g_isnan(float f) { return isnanf(f); } +inline int g_isnan(double f) { return isnan(f); } +#else +#error "missing platform-specific definition here" +#endif + +// Checking for finiteness + +inline int g_isfinite(jfloat f) { return finite(f); } +inline int g_isfinite(jdouble f) { return finite(f); } + + +// Wide characters + +inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } + + +// Portability macros +#define PRAGMA_INTERFACE #pragma interface +#define PRAGMA_IMPLEMENTATION #pragma implementation +#define VALUE_OBJ_CLASS_SPEC + +#if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95) +#define TEMPLATE_TABLE_BUG +#endif +#if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96) +#define CONST_SDM_BUG +#endif + +// Formatting. +#ifdef _LP64 +#define FORMAT64_MODIFIER "l" +#else // !_LP64 +#define FORMAT64_MODIFIER "ll" +#endif // _LP64 + +// HACK: gcc warns about applying offsetof() to non-POD object or calculating +// offset directly when base address is NULL. Use 16 to get around the +// warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress +// this warning. +#define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16) + +#ifdef offsetof +# undef offsetof +#endif +#define offsetof(klass,field) offset_of(klass,field)