/*

 * Copyright (c) 1998, 2009, 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.

 *

 */

// 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>

#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 <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

#ifdef LINUX

#include <inttypes.h>

#include <signal.h>

#include <ucontext.h>

#include <sys/time.h>

#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

    // 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

#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)