/*

 * Copyright (c) 2012, 2017 SAP SE. 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

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 */

#ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP

#define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP

#include "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>

#include <math.h>

#include <time.h>

#include <fcntl.h>

#include <dlfcn.h>

#include <pthread.h>

#include <limits.h>

#include <errno.h>

#include <stdint.h>

// Use XLC compiler builtins instead of inline assembler

#define USE_XLC_BUILTINS

#ifdef USE_XLC_BUILTINS

#include <builtins.h>

  #if __IBMCPP__ < 1000

  // the funtion prototype for __dcbtst(void *) is missing in XLC V8.0

  // I could compile a little test, where I provided the prototype.

  // The generated code was correct there. This is the prototype:

  // extern "builtin" void __dcbtst (void *);

  // For now we don't make use of it when compiling with XLC V8.0

  #else

  // __IBMCPP__ >= 1000

  // XLC V10 provides the prototype for __dcbtst (void *);

  #define USE_XLC_PREFETCH_WRITE_BUILTIN

  #endif

#endif // USE_XLC_BUILTINS

// 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__

  #error XLC and __GNUC__?

#else

  #define NULL_WORD  NULL

#endif

// AIX also needs a 64 bit NULL to work as a null address pointer.

// Most system includes on AIX would define it as an int 0 if not already defined with one

// exception: /usr/include/dirent.h will unconditionally redefine NULL to int 0 again.

// In this case you need to copy the following defines to a position after #include <dirent.h>

// (see jmv_aix.h).

#ifdef AIX

  #include <dirent.h>

  #ifdef _LP64

    #undef NULL

    #define NULL 0L

  #else

    #ifndef NULL

      #define NULL 0

    #endif

  #endif

#endif // AIX

// Compiler-specific primitive types

// All defs of int (uint16_6 etc) are defined in AIX' /usr/include/stdint.h

// Additional Java basic types

typedef uint8_t  jubyte;

typedef uint16_t jushort;

typedef uint32_t juint;

typedef uint64_t julong;

// checking for nanness

#ifdef AIX

inline int g_isnan(float  f) { return isnan(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

// Formatting.

#ifdef _LP64

#define FORMAT64_MODIFIER "l"

#else // !_LP64

#define FORMAT64_MODIFIER "ll"

#endif // _LP64

// Cannot use xlc's offsetof as implementation of hotspot's

// offset_of(), because xlc warns about applying offsetof() to non-POD

// object and xlc cannot compile the expression offsetof(DataLayout,

// _cells[index]) in DataLayout::cell_offset() .  Therefore we define

// offset_of as it is defined for gcc.

#define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16)

// AIX 5.3 has buggy __thread support. (see JDK-8176442).

#define USE_LIBRARY_BASED_TLS_ONLY 1

#ifndef USE_LIBRARY_BASED_TLS_ONLY

#define THREAD_LOCAL_DECL __thread

#endif

// Inlining support

#define NOINLINE

#define ALWAYSINLINE inline __attribute__((always_inline))

#endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP