1 /* 2 * Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2012, 2019 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef SHARE_UTILITIES_GLOBALDEFINITIONS_XLC_HPP 27 #define SHARE_UTILITIES_GLOBALDEFINITIONS_XLC_HPP 28 29 #include "jni.h" 30 31 // This file holds compiler-dependent includes, 32 // globally used constants & types, class (forward) 33 // declarations and a few frequently used utility functions. 34 35 #include <ctype.h> 36 #include <string.h> 37 #include <stdarg.h> 38 #include <stddef.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <wchar.h> 42 43 #include <math.h> 44 #include <time.h> 45 #include <fcntl.h> 46 #include <dlfcn.h> 47 #include <pthread.h> 48 49 #include <limits.h> 50 #include <errno.h> 51 52 #include <stdint.h> 53 54 // check for xlc16 or higher 55 #ifdef __ibmxl_version__ 56 #if __ibmxl_version__ < 16 57 #error "xlc < 16 not supported" 58 #endif 59 #else 60 #error "xlc < 16 not supported, macro __ibmxl_version__ not found" 61 #endif 62 63 #ifndef _AIX 64 #error "missing AIX-specific definition _AIX" 65 #endif 66 67 // Use XLC compiler builtins instead of inline assembler 68 #define USE_XLC_BUILTINS 69 70 #ifdef USE_XLC_BUILTINS 71 #include <builtins.h> 72 // XLC V10 and higher provide the prototype for __dcbtst (void *); 73 #endif // USE_XLC_BUILTINS 74 75 // NULL vs NULL_WORD: 76 // Some platform/tool-chain combinations can't assign NULL to an integer 77 // type so we define NULL_WORD to use in those contexts. For xlc they are the same. 78 #define NULL_WORD NULL 79 80 // AIX also needs a 64 bit NULL to work as a null address pointer. 81 // Most system includes on AIX would define it as an int 0 if not already defined with one 82 // exception: /usr/include/dirent.h will unconditionally redefine NULL to int 0 again. 83 // In this case you need to copy the following defines to a position after #include <dirent.h> 84 #include <dirent.h> 85 #ifdef _LP64 86 #undef NULL 87 #define NULL 0L 88 #else 89 #ifndef NULL 90 #define NULL 0 91 #endif 92 #endif 93 94 // Compiler-specific primitive types 95 // All defs of int (uint16_6 etc) are defined in AIX' /usr/include/stdint.h 96 97 // Additional Java basic types 98 99 typedef uint8_t jubyte; 100 typedef uint16_t jushort; 101 typedef uint32_t juint; 102 typedef uint64_t julong; 103 104 // checking for nanness 105 inline int g_isnan(float f) { return isnan(f); } 106 inline int g_isnan(double f) { return isnan(f); } 107 108 // Checking for finiteness 109 inline int g_isfinite(jfloat f) { return finite(f); } 110 inline int g_isfinite(jdouble f) { return finite(f); } 111 112 // Wide characters 113 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } 114 115 116 // Formatting. 117 #ifdef _LP64 118 #define FORMAT64_MODIFIER "l" 119 #else // !_LP64 120 #define FORMAT64_MODIFIER "ll" 121 #endif // _LP64 122 123 // Cannot use xlc's offsetof as implementation of hotspot's 124 // offset_of(), because xlc warns about applying offsetof() to non-POD 125 // object and xlc cannot compile the expression offsetof(DataLayout, 126 // _cells[index]) in DataLayout::cell_offset() . Therefore we define 127 // offset_of as it is defined for gcc. 128 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16) 129 130 // AIX 5.3 has buggy __thread support. (see JDK-8176442). 131 #define USE_LIBRARY_BASED_TLS_ONLY 1 132 133 #ifndef USE_LIBRARY_BASED_TLS_ONLY 134 #define THREAD_LOCAL_DECL __thread 135 #endif 136 137 // Inlining support 138 // 139 // Be aware that for function/method declarations, xlC only supports the following 140 // syntax (i.e. the attribute must be placed AFTER the function/method declarator): 141 // 142 // void* operator new(size_t size) throw() NOINLINE; 143 // 144 // For function/method defintions, the more common placement BEFORE the 145 // function/method declarator seems to be supported as well: 146 // 147 // NOINLINE void* CHeapObj<F>::operator new(size_t size) throw() {...} 148 149 #define NOINLINE __attribute__((__noinline__)) 150 #define ALWAYSINLINE inline __attribute__((__always_inline__)) 151 152 #endif // SHARE_UTILITIES_GLOBALDEFINITIONS_XLC_HPP