1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/utilities/globalDefinitions_gcc.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,275 @@
1.4 +/*
1.5 + * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +// This file holds compiler-dependent includes,
1.29 +// globally used constants & types, class (forward)
1.30 +// declarations and a few frequently used utility functions.
1.31 +
1.32 +#include <ctype.h>
1.33 +#include <string.h>
1.34 +#include <stdarg.h>
1.35 +#include <stddef.h>
1.36 +#include <stdio.h>
1.37 +#include <stdlib.h>
1.38 +#include <wchar.h>
1.39 +
1.40 +#ifdef SOLARIS
1.41 +#include <ieeefp.h>
1.42 +#endif // SOLARIS
1.43 +
1.44 +#include <math.h>
1.45 +#ifndef FP_PZERO
1.46 +// Linux doesn't have positive/negative zero
1.47 +#define FP_PZERO FP_ZERO
1.48 +#endif
1.49 +#if (!defined fpclass) && ((!defined SPARC) || (!defined SOLARIS))
1.50 +#define fpclass fpclassify
1.51 +#endif
1.52 +
1.53 +#include <time.h>
1.54 +#include <fcntl.h>
1.55 +#include <dlfcn.h>
1.56 +#include <pthread.h>
1.57 +
1.58 +#ifdef SOLARIS
1.59 +#include <thread.h>
1.60 +#endif // SOLARIS
1.61 +
1.62 +#include <limits.h>
1.63 +#include <errno.h>
1.64 +
1.65 +#ifdef SOLARIS
1.66 +#include <sys/trap.h>
1.67 +#include <sys/regset.h>
1.68 +#include <sys/procset.h>
1.69 +#include <ucontext.h>
1.70 +#include <setjmp.h>
1.71 +#endif // SOLARIS
1.72 +
1.73 +# ifdef SOLARIS_MUTATOR_LIBTHREAD
1.74 +# include <sys/procfs.h>
1.75 +# endif
1.76 +
1.77 +#ifdef LINUX
1.78 +#include <inttypes.h>
1.79 +#include <signal.h>
1.80 +#include <ucontext.h>
1.81 +#include <sys/time.h>
1.82 +#endif // LINUX
1.83 +
1.84 +// 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
1.85 +// When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
1.86 +// system header files. On 32-bit architectures, there is no problem.
1.87 +// On 64-bit architectures, defining NULL as a 32-bit constant can cause
1.88 +// problems with varargs functions: C++ integral promotion rules say for
1.89 +// varargs, we pass the argument 0 as an int. So, if NULL was passed to a
1.90 +// varargs function it will remain 32-bits. Depending on the calling
1.91 +// convention of the machine, if the argument is passed on the stack then
1.92 +// only 32-bits of the "NULL" pointer may be initialized to zero. The
1.93 +// other 32-bits will be garbage. If the varargs function is expecting a
1.94 +// pointer when it extracts the argument, then we have a problem.
1.95 +//
1.96 +// Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
1.97 +//
1.98 +// Note: this fix doesn't work well on Linux because NULL will be overwritten
1.99 +// whenever a system header file is included. Linux handles NULL correctly
1.100 +// through a special type '__null'.
1.101 +#ifdef SOLARIS
1.102 + #ifdef _LP64
1.103 + #undef NULL
1.104 + #define NULL 0L
1.105 + #else
1.106 + #ifndef NULL
1.107 + #define NULL 0
1.108 + #endif
1.109 + #endif
1.110 +#endif
1.111 +
1.112 +// NULL vs NULL_WORD:
1.113 +// On Linux NULL is defined as a special type '__null'. Assigning __null to
1.114 +// integer variable will cause gcc warning. Use NULL_WORD in places where a
1.115 +// pointer is stored as integer value. On some platforms, sizeof(intptr_t) >
1.116 +// sizeof(void*), so here we want something which is integer type, but has the
1.117 +// same size as a pointer.
1.118 +#ifdef LINUX
1.119 + #ifdef _LP64
1.120 + #define NULL_WORD 0L
1.121 + #else
1.122 + #define NULL_WORD 0
1.123 + #endif
1.124 +#else
1.125 + #define NULL_WORD NULL
1.126 +#endif
1.127 +
1.128 +#ifndef LINUX
1.129 +// Compiler-specific primitive types
1.130 +typedef unsigned short uint16_t;
1.131 +#ifndef _UINT32_T
1.132 +#define _UINT32_T
1.133 +typedef unsigned int uint32_t;
1.134 +#endif // _UINT32_T
1.135 +
1.136 +#if !defined(_SYS_INT_TYPES_H)
1.137 +#ifndef _UINT64_T
1.138 +#define _UINT64_T
1.139 +typedef unsigned long long uint64_t;
1.140 +#endif // _UINT64_T
1.141 +// %%%% how to access definition of intptr_t portably in 5.5 onward?
1.142 +typedef int intptr_t;
1.143 +typedef unsigned int uintptr_t;
1.144 +// If this gets an error, figure out a symbol XXX that implies the
1.145 +// prior definition of intptr_t, and add "&& !defined(XXX)" above.
1.146 +#endif // _SYS_INT_TYPES_H
1.147 +
1.148 +#endif // !LINUX
1.149 +
1.150 +// Additional Java basic types
1.151 +
1.152 +typedef uint8_t jubyte;
1.153 +typedef uint16_t jushort;
1.154 +typedef uint32_t juint;
1.155 +typedef uint64_t julong;
1.156 +
1.157 +//----------------------------------------------------------------------------------------------------
1.158 +// Special (possibly not-portable) casts
1.159 +// Cast floats into same-size integers and vice-versa w/o changing bit-pattern
1.160 +// %%%%%% These seem like standard C++ to me--how about factoring them out? - Ungar
1.161 +
1.162 +inline jint jint_cast (jfloat x) { return *(jint* )&x; }
1.163 +inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; }
1.164 +
1.165 +inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; }
1.166 +inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; }
1.167 +
1.168 +//----------------------------------------------------------------------------------------------------
1.169 +// Constant for jlong (specifying an long long canstant is C++ compiler specific)
1.170 +
1.171 +// Build a 64bit integer constant
1.172 +#define CONST64(x) (x ## LL)
1.173 +#define UCONST64(x) (x ## ULL)
1.174 +
1.175 +const jlong min_jlong = CONST64(0x8000000000000000);
1.176 +const jlong max_jlong = CONST64(0x7fffffffffffffff);
1.177 +
1.178 +
1.179 +#ifdef SOLARIS
1.180 +//----------------------------------------------------------------------------------------------------
1.181 +// ANSI C++ fixes
1.182 +// NOTE:In the ANSI committee's continuing attempt to make each version
1.183 +// of C++ incompatible with the previous version, you can no longer cast
1.184 +// pointers to functions without specifying linkage unless you want to get
1.185 +// warnings.
1.186 +//
1.187 +// This also means that pointers to functions can no longer be "hidden"
1.188 +// in opaque types like void * because at the invokation point warnings
1.189 +// will be generated. While this makes perfect sense from a type safety
1.190 +// point of view it causes a lot of warnings on old code using C header
1.191 +// files. Here are some typedefs to make the job of silencing warnings
1.192 +// a bit easier.
1.193 +//
1.194 +// The final kick in the teeth is that you can only have extern "C" linkage
1.195 +// specified at file scope. So these typedefs are here rather than in the
1.196 +// .hpp for the class (os:Solaris usually) that needs them.
1.197 +
1.198 +extern "C" {
1.199 + typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t);
1.200 + typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t);
1.201 + typedef int (*int_fnP_thread_t_i)(thread_t, int);
1.202 + typedef int (*int_fnP_thread_t)(thread_t);
1.203 +
1.204 + typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst);
1.205 + typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx);
1.206 +
1.207 + // typedef for missing API in libc
1.208 + typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *);
1.209 + typedef int (*int_fnP_mutex_tP)(mutex_t *);
1.210 + typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg);
1.211 + typedef int (*int_fnP_cond_tP)(cond_t *cv);
1.212 +};
1.213 +#endif // SOLARIS
1.214 +
1.215 +//----------------------------------------------------------------------------------------------------
1.216 +// Debugging
1.217 +
1.218 +#define DEBUG_EXCEPTION ::abort();
1.219 +
1.220 +extern "C" void breakpoint();
1.221 +#define BREAKPOINT ::breakpoint()
1.222 +
1.223 +// checking for nanness
1.224 +#ifdef SOLARIS
1.225 +#ifdef SPARC
1.226 +inline int g_isnan(float f) { return isnanf(f); }
1.227 +#else
1.228 +// isnanf() broken on Intel Solaris use isnand()
1.229 +inline int g_isnan(float f) { return isnand(f); }
1.230 +#endif
1.231 +inline int g_isnan(double f) { return isnand(f); }
1.232 +#elif LINUX
1.233 +inline int g_isnan(float f) { return isnanf(f); }
1.234 +inline int g_isnan(double f) { return isnan(f); }
1.235 +#else
1.236 +#error "missing platform-specific definition here"
1.237 +#endif
1.238 +
1.239 +// Checking for finiteness
1.240 +
1.241 +inline int g_isfinite(jfloat f) { return finite(f); }
1.242 +inline int g_isfinite(jdouble f) { return finite(f); }
1.243 +
1.244 +
1.245 +// Wide characters
1.246 +
1.247 +inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
1.248 +
1.249 +
1.250 +// Portability macros
1.251 +#define PRAGMA_INTERFACE #pragma interface
1.252 +#define PRAGMA_IMPLEMENTATION #pragma implementation
1.253 +#define VALUE_OBJ_CLASS_SPEC
1.254 +
1.255 +#if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95)
1.256 +#define TEMPLATE_TABLE_BUG
1.257 +#endif
1.258 +#if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96)
1.259 +#define CONST_SDM_BUG
1.260 +#endif
1.261 +
1.262 +// Formatting.
1.263 +#ifdef _LP64
1.264 +#define FORMAT64_MODIFIER "l"
1.265 +#else // !_LP64
1.266 +#define FORMAT64_MODIFIER "ll"
1.267 +#endif // _LP64
1.268 +
1.269 +// HACK: gcc warns about applying offsetof() to non-POD object or calculating
1.270 +// offset directly when base address is NULL. Use 16 to get around the
1.271 +// warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress
1.272 +// this warning.
1.273 +#define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16)
1.274 +
1.275 +#ifdef offsetof
1.276 +# undef offsetof
1.277 +#endif
1.278 +#define offsetof(klass,field) offset_of(klass,field)
