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/*
* Copyright (c) 1998, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP
#define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP
#include "prims/jni.h"
// 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 <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <wchar.h>
#ifdef SOLARIS
#include <ieeefp.h>
#endif // SOLARIS
#include <math.h>
#include <time.h>
#include <fcntl.h>
#include <dlfcn.h>
#include <pthread.h>
#ifdef SOLARIS
#include <thread.h>
#endif // SOLARIS
#include <limits.h>
#include <errno.h>
#ifdef SOLARIS
#include <sys/trap.h>
#include <sys/regset.h>
#include <sys/procset.h>
#include <ucontext.h>
#include <setjmp.h>
#endif // SOLARIS
# ifdef SOLARIS_MUTATOR_LIBTHREAD
# include <sys/procfs.h>
# endif
#if defined(LINUX) || defined(_ALLBSD_SOURCE)
#ifndef __STDC_LIMIT_MACROS
#define __STDC_LIMIT_MACROS
#endif // __STDC_LIMIT_MACROS
#include <inttypes.h>
#include <signal.h>
#ifndef __OpenBSD__
#include <ucontext.h>
#endif
#ifdef __APPLE__
#include <AvailabilityMacros.h>
#include <mach/mach.h>
#endif
#include <sys/time.h>
#endif // LINUX || _ALLBSD_SOURCE
// 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 __GNUC__
#ifdef _LP64
#define NULL_WORD 0L
#else
// Cast 0 to intptr_t rather than int32_t since they are not the same type
// on platforms such as Mac OS X.
#define NULL_WORD ((intptr_t)0)
#endif
#else
#define NULL_WORD NULL
#endif
#if !defined(LINUX) && !defined(_ALLBSD_SOURCE)
// 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 && !_ALLBSD_SOURCE
// Additional Java basic types
typedef uint8_t jubyte;
typedef uint16_t jushort;
typedef uint32_t juint;
typedef uint64_t julong;
//----------------------------------------------------------------------------------------------------
// 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();
#ifdef ARM32
#ifdef SOLARIS
#define BREAKPOINT __asm__ volatile (".long 0xe1200070")
#else
#define BREAKPOINT __asm__ volatile (".long 0xe7f001f0")
#endif
#else
extern "C" void breakpoint();
#define BREAKPOINT ::breakpoint()
#endif
// 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 defined(__APPLE__)
inline int g_isnan(double f) { return isnan(f); }
#elif defined(LINUX) || defined(_ALLBSD_SOURCE)
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
// GCC 4.3 does not allow 0.0/0.0 to produce a NAN value
#if (__GNUC__ == 4) && (__GNUC_MINOR__ > 2)
#define CAN_USE_NAN_DEFINE 1
#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
#ifndef ATTRIBUTE_PRINTF
// Diagnostic pragmas like the ones defined below in PRAGMA_FORMAT_NONLITERAL_IGNORED
// were only introduced in GCC 4.2. Because we have no other possibility to ignore
// these warnings for older versions of GCC, we simply don't decorate our printf-style
// functions with __attribute__(format) in that case.
#if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2)) || (__GNUC__ > 4)
#define ATTRIBUTE_PRINTF(fmt,vargs) __attribute__((format(printf, fmt, vargs)))
#else
#define ATTRIBUTE_PRINTF(fmt,vargs)
#endif
#endif
#define PRAGMA_FORMAT_NONLITERAL_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"") \
_Pragma("GCC diagnostic ignored \"-Wformat-security\"")
#define PRAGMA_FORMAT_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat\"")
#if defined(__clang_major__) && \
(__clang_major__ >= 4 || \
(__clang_major__ >= 3 && __clang_minor__ >= 1)) || \
((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
// Tested to work with clang version 3.1 and better.
#define PRAGMA_DIAG_PUSH _Pragma("GCC diagnostic push")
#define PRAGMA_DIAG_POP _Pragma("GCC diagnostic pop")
#define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL
#define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED
// Hack to deal with gcc yammering about non-security format stuff
#else
// Old versions of gcc don't do push/pop, also do not cope with this pragma within a function
// One method does so much varied printing that it is decorated with both internal and external
// versions of the macro-pragma to obtain better checking with newer compilers.
#define PRAGMA_DIAG_PUSH
#define PRAGMA_DIAG_POP
#define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED
#define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL
#endif
#ifndef __clang_major__
#define PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC _Pragma("GCC diagnostic ignored \"-Wformat\"") _Pragma("GCC diagnostic error \"-Wformat-nonliteral\"") _Pragma("GCC diagnostic error \"-Wformat-security\"")
#endif
#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)
#if defined(_LP64) && defined(__APPLE__)
#define JLONG_FORMAT "%ld"
#endif // _LP64 && __APPLE__
#endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP