/*

 * Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.

 * Copyright (c) 2012, 2019 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_UTILITIES_GLOBALDEFINITIONS_XLC_HPP

#define SHARE_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>

// check for xlc16 or higher

#ifdef __ibmxl_version__

  #if __ibmxl_version__ < 16

  #error "xlc < 16 not supported"

  #endif

#else

  #error "xlc < 16 not supported, macro __ibmxl_version__ not found"

#endif

#ifndef _AIX

#error "missing AIX-specific definition _AIX"

#endif

// Use XLC compiler builtins instead of inline assembler

#define USE_XLC_BUILTINS

#ifdef USE_XLC_BUILTINS

#include <builtins.h>

// XLC V10 and higher provide the prototype for __dcbtst (void *);

#endif // USE_XLC_BUILTINS

// NULL vs NULL_WORD:

// Some platform/tool-chain combinations can't assign NULL to an integer

// type so we define NULL_WORD to use in those contexts. For xlc they are the same.

#define NULL_WORD  NULL

// 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>

#include <dirent.h>

#ifdef _LP64

  #undef NULL

  #define NULL 0L

#else

  #ifndef NULL

    #define NULL 0

  #endif

#endif

// 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

inline int g_isnan(float  f) { return isnan(f); }

inline int g_isnan(double f) { return isnan(f); }

// 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); }

// 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

// Inlining support

//

// Be aware that for function/method declarations, xlC only supports the following

// syntax (i.e. the attribute must be placed AFTER the function/method declarator):

//

//   void* operator new(size_t size) throw() NOINLINE;

//

// For function/method defintions, the more common placement BEFORE the

// function/method declarator seems to be supported as well:

//

//   NOINLINE void* CHeapObj<F>::operator new(size_t size) throw() {...}

#define NOINLINE     __attribute__((__noinline__))

#define ALWAYSINLINE inline __attribute__((__always_inline__))

#endif // SHARE_UTILITIES_GLOBALDEFINITIONS_XLC_HPP